Commit | Line | Data |
---|---|---|
5bd4f169 | 1 | /* PowerPC64-specific support for 64-bit ELF. |
219d1afa | 2 | Copyright (C) 1999-2018 Free Software Foundation, Inc. |
5bd4f169 AM |
3 | Written by Linus Nordberg, Swox AB <info@swox.com>, |
4 | based on elf32-ppc.c by Ian Lance Taylor. | |
32ca9640 | 5 | Largely rewritten by Alan Modra. |
5bd4f169 | 6 | |
ae9a127f | 7 | This file is part of BFD, the Binary File Descriptor library. |
5bd4f169 | 8 | |
ae9a127f NC |
9 | This program is free software; you can redistribute it and/or modify |
10 | it under the terms of the GNU General Public License as published by | |
cd123cb7 | 11 | the Free Software Foundation; either version 3 of the License, or |
ae9a127f | 12 | (at your option) any later version. |
5bd4f169 | 13 | |
ae9a127f NC |
14 | This program is distributed in the hope that it will be useful, |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
5bd4f169 | 18 | |
4ce794b7 AM |
19 | You should have received a copy of the GNU General Public License along |
20 | with this program; if not, write to the Free Software Foundation, Inc., | |
3e110533 | 21 | 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */ |
5bd4f169 | 22 | |
cd123cb7 | 23 | |
4ce794b7 AM |
24 | /* The 64-bit PowerPC ELF ABI may be found at |
25 | http://www.linuxbase.org/spec/ELF/ppc64/PPC-elf64abi.txt, and | |
26 | http://www.linuxbase.org/spec/ELF/ppc64/spec/book1.html */ | |
5bd4f169 | 27 | |
3db64b00 | 28 | #include "sysdep.h" |
183e98be | 29 | #include <stdarg.h> |
5bd4f169 | 30 | #include "bfd.h" |
5bd4f169 AM |
31 | #include "bfdlink.h" |
32 | #include "libbfd.h" | |
33 | #include "elf-bfd.h" | |
04c9666a | 34 | #include "elf/ppc64.h" |
5d1634d7 | 35 | #include "elf64-ppc.h" |
58d180e8 | 36 | #include "dwarf2.h" |
5bd4f169 | 37 | |
805fc799 | 38 | static bfd_reloc_status_type ppc64_elf_ha_reloc |
4ce794b7 | 39 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
2441e016 AM |
40 | static bfd_reloc_status_type ppc64_elf_branch_reloc |
41 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); | |
805fc799 | 42 | static bfd_reloc_status_type ppc64_elf_brtaken_reloc |
4ce794b7 | 43 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
805fc799 | 44 | static bfd_reloc_status_type ppc64_elf_sectoff_reloc |
4ce794b7 | 45 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
805fc799 | 46 | static bfd_reloc_status_type ppc64_elf_sectoff_ha_reloc |
4ce794b7 | 47 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
805fc799 | 48 | static bfd_reloc_status_type ppc64_elf_toc_reloc |
4ce794b7 | 49 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
805fc799 | 50 | static bfd_reloc_status_type ppc64_elf_toc_ha_reloc |
4ce794b7 | 51 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
805fc799 | 52 | static bfd_reloc_status_type ppc64_elf_toc64_reloc |
4ce794b7 | 53 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
805fc799 | 54 | static bfd_reloc_status_type ppc64_elf_unhandled_reloc |
4ce794b7 | 55 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
2441e016 | 56 | static bfd_vma opd_entry_value |
aef36ac1 | 57 | (asection *, bfd_vma, asection **, bfd_vma *, bfd_boolean); |
5bd4f169 | 58 | |
6d00b590 | 59 | #define TARGET_LITTLE_SYM powerpc_elf64_le_vec |
ad8e1ba5 | 60 | #define TARGET_LITTLE_NAME "elf64-powerpcle" |
6d00b590 | 61 | #define TARGET_BIG_SYM powerpc_elf64_vec |
ad8e1ba5 AM |
62 | #define TARGET_BIG_NAME "elf64-powerpc" |
63 | #define ELF_ARCH bfd_arch_powerpc | |
ae95ffa6 | 64 | #define ELF_TARGET_ID PPC64_ELF_DATA |
ad8e1ba5 AM |
65 | #define ELF_MACHINE_CODE EM_PPC64 |
66 | #define ELF_MAXPAGESIZE 0x10000 | |
702d1671 AM |
67 | #define ELF_COMMONPAGESIZE 0x1000 |
68 | #define ELF_RELROPAGESIZE ELF_MAXPAGESIZE | |
ad8e1ba5 AM |
69 | #define elf_info_to_howto ppc64_elf_info_to_howto |
70 | ||
71 | #define elf_backend_want_got_sym 0 | |
72 | #define elf_backend_want_plt_sym 0 | |
73 | #define elf_backend_plt_alignment 3 | |
74 | #define elf_backend_plt_not_loaded 1 | |
ad8e1ba5 | 75 | #define elf_backend_got_header_size 8 |
5474d94f | 76 | #define elf_backend_want_dynrelro 1 |
ad8e1ba5 AM |
77 | #define elf_backend_can_gc_sections 1 |
78 | #define elf_backend_can_refcount 1 | |
79 | #define elf_backend_rela_normal 1 | |
64f52338 | 80 | #define elf_backend_dtrel_excludes_plt 1 |
6bfdb61b | 81 | #define elf_backend_default_execstack 0 |
ad8e1ba5 | 82 | |
e717da7e | 83 | #define bfd_elf64_mkobject ppc64_elf_mkobject |
ad8e1ba5 | 84 | #define bfd_elf64_bfd_reloc_type_lookup ppc64_elf_reloc_type_lookup |
aa374f67 | 85 | #define bfd_elf64_bfd_reloc_name_lookup ppc64_elf_reloc_name_lookup |
ee67d69a AM |
86 | #define bfd_elf64_bfd_merge_private_bfd_data ppc64_elf_merge_private_bfd_data |
87 | #define bfd_elf64_bfd_print_private_bfd_data ppc64_elf_print_private_bfd_data | |
ad8e1ba5 AM |
88 | #define bfd_elf64_new_section_hook ppc64_elf_new_section_hook |
89 | #define bfd_elf64_bfd_link_hash_table_create ppc64_elf_link_hash_table_create | |
90e3cdf2 | 90 | #define bfd_elf64_get_synthetic_symtab ppc64_elf_get_synthetic_symtab |
aa374f67 | 91 | #define bfd_elf64_bfd_link_just_syms ppc64_elf_link_just_syms |
8c5b4e52 | 92 | #define bfd_elf64_bfd_gc_sections ppc64_elf_gc_sections |
ad8e1ba5 AM |
93 | |
94 | #define elf_backend_object_p ppc64_elf_object_p | |
d37c89e5 AM |
95 | #define elf_backend_grok_prstatus ppc64_elf_grok_prstatus |
96 | #define elf_backend_grok_psinfo ppc64_elf_grok_psinfo | |
183e98be | 97 | #define elf_backend_write_core_note ppc64_elf_write_core_note |
9d19e4fd | 98 | #define elf_backend_create_dynamic_sections _bfd_elf_create_dynamic_sections |
ad8e1ba5 | 99 | #define elf_backend_copy_indirect_symbol ppc64_elf_copy_indirect_symbol |
555cd476 | 100 | #define elf_backend_add_symbol_hook ppc64_elf_add_symbol_hook |
f6c7c3e8 | 101 | #define elf_backend_check_directives ppc64_elf_before_check_relocs |
e5034e59 | 102 | #define elf_backend_notice_as_needed ppc64_elf_notice_as_needed |
8387904d | 103 | #define elf_backend_archive_symbol_lookup ppc64_elf_archive_symbol_lookup |
ad8e1ba5 | 104 | #define elf_backend_check_relocs ppc64_elf_check_relocs |
c0e331c7 | 105 | #define elf_backend_relocs_compatible _bfd_elf_relocs_compatible |
74f0fb50 | 106 | #define elf_backend_gc_keep ppc64_elf_gc_keep |
64d03ab5 | 107 | #define elf_backend_gc_mark_dynamic_ref ppc64_elf_gc_mark_dynamic_ref |
ad8e1ba5 | 108 | #define elf_backend_gc_mark_hook ppc64_elf_gc_mark_hook |
ad8e1ba5 AM |
109 | #define elf_backend_adjust_dynamic_symbol ppc64_elf_adjust_dynamic_symbol |
110 | #define elf_backend_hide_symbol ppc64_elf_hide_symbol | |
9f296da3 | 111 | #define elf_backend_maybe_function_sym ppc64_elf_maybe_function_sym |
ad8e1ba5 AM |
112 | #define elf_backend_always_size_sections ppc64_elf_func_desc_adjust |
113 | #define elf_backend_size_dynamic_sections ppc64_elf_size_dynamic_sections | |
a345bc8d | 114 | #define elf_backend_hash_symbol ppc64_elf_hash_symbol |
74541ad4 | 115 | #define elf_backend_init_index_section _bfd_elf_init_2_index_sections |
60124e18 | 116 | #define elf_backend_action_discarded ppc64_elf_action_discarded |
ad8e1ba5 AM |
117 | #define elf_backend_relocate_section ppc64_elf_relocate_section |
118 | #define elf_backend_finish_dynamic_symbol ppc64_elf_finish_dynamic_symbol | |
119 | #define elf_backend_reloc_type_class ppc64_elf_reloc_type_class | |
120 | #define elf_backend_finish_dynamic_sections ppc64_elf_finish_dynamic_sections | |
754021d0 | 121 | #define elf_backend_link_output_symbol_hook ppc64_elf_output_symbol_hook |
29ef7005 | 122 | #define elf_backend_special_sections ppc64_elf_special_sections |
6911b7dc | 123 | #define elf_backend_merge_symbol_attribute ppc64_elf_merge_symbol_attribute |
8c5b4e52 | 124 | #define elf_backend_merge_symbol ppc64_elf_merge_symbol |
bce964aa | 125 | #define elf_backend_get_reloc_section bfd_get_section_by_name |
ad8e1ba5 | 126 | |
5bd4f169 AM |
127 | /* The name of the dynamic interpreter. This is put in the .interp |
128 | section. */ | |
129 | #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1" | |
130 | ||
131 | /* The size in bytes of an entry in the procedure linkage table. */ | |
b9e5796b | 132 | #define PLT_ENTRY_SIZE(htab) (htab->opd_abi ? 24 : 8) |
2d7ad24e | 133 | #define LOCAL_PLT_ENTRY_SIZE(htab) (htab->opd_abi ? 16 : 8) |
5bd4f169 AM |
134 | |
135 | /* The initial size of the plt reserved for the dynamic linker. */ | |
b9e5796b | 136 | #define PLT_INITIAL_ENTRY_SIZE(htab) (htab->opd_abi ? 24 : 16) |
5bd4f169 | 137 | |
a078d95a AM |
138 | /* Offsets to some stack save slots. */ |
139 | #define STK_LR 16 | |
140 | #define STK_TOC(htab) (htab->opd_abi ? 40 : 24) | |
eb8d7fda | 141 | /* This one is dodgy. ELFv2 does not have a linker word, so use the |
a078d95a AM |
142 | CR save slot. Used only by optimised __tls_get_addr call stub, |
143 | relying on __tls_get_addr_opt not saving CR.. */ | |
144 | #define STK_LINKER(htab) (htab->opd_abi ? 32 : 8) | |
145 | ||
5bd4f169 | 146 | /* TOC base pointers offset from start of TOC. */ |
411e1bfb | 147 | #define TOC_BASE_OFF 0x8000 |
a27e685f AM |
148 | /* TOC base alignment. */ |
149 | #define TOC_BASE_ALIGN 256 | |
411e1bfb AM |
150 | |
151 | /* Offset of tp and dtp pointers from start of TLS block. */ | |
152 | #define TP_OFFSET 0x7000 | |
153 | #define DTP_OFFSET 0x8000 | |
5bd4f169 | 154 | |
ad8e1ba5 AM |
155 | /* .plt call stub instructions. The normal stub is like this, but |
156 | sometimes the .plt entry crosses a 64k boundary and we need to | |
71a39c98 | 157 | insert an addi to adjust r11. */ |
a078d95a | 158 | #define STD_R2_0R1 0xf8410000 /* std %r2,0+40(%r1) */ |
71a39c98 AM |
159 | #define ADDIS_R11_R2 0x3d620000 /* addis %r11,%r2,xxx@ha */ |
160 | #define LD_R12_0R11 0xe98b0000 /* ld %r12,xxx+0@l(%r11) */ | |
161 | #define MTCTR_R12 0x7d8903a6 /* mtctr %r12 */ | |
162 | #define LD_R2_0R11 0xe84b0000 /* ld %r2,xxx+8@l(%r11) */ | |
163 | #define LD_R11_0R11 0xe96b0000 /* ld %r11,xxx+16@l(%r11) */ | |
5d1634d7 AM |
164 | #define BCTR 0x4e800420 /* bctr */ |
165 | ||
07d6d2b8 AM |
166 | #define ADDI_R11_R11 0x396b0000 /* addi %r11,%r11,off@l */ |
167 | #define ADDIS_R2_R2 0x3c420000 /* addis %r2,%r2,off@ha */ | |
168 | #define ADDI_R2_R2 0x38420000 /* addi %r2,%r2,off@l */ | |
169 | ||
170 | #define XOR_R2_R12_R12 0x7d826278 /* xor %r2,%r12,%r12 */ | |
171 | #define ADD_R11_R11_R2 0x7d6b1214 /* add %r11,%r11,%r2 */ | |
172 | #define XOR_R11_R12_R12 0x7d8b6278 /* xor %r11,%r12,%r12 */ | |
173 | #define ADD_R2_R2_R11 0x7c425a14 /* add %r2,%r2,%r11 */ | |
174 | #define CMPLDI_R2_0 0x28220000 /* cmpldi %r2,0 */ | |
175 | #define BNECTR 0x4ca20420 /* bnectr+ */ | |
176 | #define BNECTR_P4 0x4ce20420 /* bnectr+ */ | |
794e51c0 | 177 | |
71a39c98 | 178 | #define LD_R12_0R2 0xe9820000 /* ld %r12,xxx+0(%r2) */ |
ac2df442 | 179 | #define LD_R11_0R2 0xe9620000 /* ld %r11,xxx+0(%r2) */ |
07d6d2b8 | 180 | #define LD_R2_0R2 0xe8420000 /* ld %r2,xxx+0(%r2) */ |
ac2df442 | 181 | |
07d6d2b8 AM |
182 | #define LD_R2_0R1 0xe8410000 /* ld %r2,0(%r1) */ |
183 | #define LD_R2_0R12 0xe84c0000 /* ld %r2,0(%r12) */ | |
184 | #define ADD_R2_R2_R12 0x7c426214 /* add %r2,%r2,%r12 */ | |
ad8e1ba5 | 185 | |
07d6d2b8 | 186 | #define LIS_R2 0x3c400000 /* lis %r2,xxx@ha */ |
006589cf AM |
187 | #define ADDIS_R2_R12 0x3c4c0000 /* addis %r2,%r12,xxx@ha */ |
188 | #define ADDIS_R12_R2 0x3d820000 /* addis %r12,%r2,xxx@ha */ | |
a345bc8d | 189 | #define ADDIS_R12_R12 0x3d8c0000 /* addis %r12,%r12,xxx@ha */ |
07d6d2b8 | 190 | #define LD_R12_0R12 0xe98c0000 /* ld %r12,xxx@l(%r12) */ |
a345bc8d | 191 | |
9e390558 AM |
192 | /* __glink_PLTresolve stub instructions. We enter with the index in R0. */ |
193 | #define GLINK_PLTRESOLVE_SIZE(htab) \ | |
407aa07c | 194 | (8u + (htab->opd_abi ? 11 * 4 : 14 * 4)) |
ee4bf8d2 AM |
195 | /* 0: */ |
196 | /* .quad plt0-1f */ | |
197 | /* __glink: */ | |
198 | #define MFLR_R12 0x7d8802a6 /* mflr %12 */ | |
199 | #define BCL_20_31 0x429f0005 /* bcl 20,31,1f */ | |
200 | /* 1: */ | |
201 | #define MFLR_R11 0x7d6802a6 /* mflr %11 */ | |
71a39c98 | 202 | /* ld %2,(0b-1b)(%11) */ |
ee4bf8d2 | 203 | #define MTLR_R12 0x7d8803a6 /* mtlr %12 */ |
71a39c98 AM |
204 | #define ADD_R11_R2_R11 0x7d625a14 /* add %11,%2,%11 */ |
205 | /* ld %12,0(%11) */ | |
206 | /* ld %2,8(%11) */ | |
207 | /* mtctr %12 */ | |
208 | /* ld %11,16(%11) */ | |
ee4bf8d2 | 209 | /* bctr */ |
b9e5796b AM |
210 | #define MFLR_R0 0x7c0802a6 /* mflr %r0 */ |
211 | #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */ | |
212 | #define SUB_R12_R12_R11 0x7d8b6050 /* subf %r12,%r11,%r12 */ | |
213 | #define ADDI_R0_R12 0x380c0000 /* addi %r0,%r12,0 */ | |
214 | #define SRDI_R0_R0_2 0x7800f082 /* rldicl %r0,%r0,62,2 */ | |
5d1634d7 AM |
215 | |
216 | /* Pad with this. */ | |
217 | #define NOP 0x60000000 | |
218 | ||
721956f4 AM |
219 | /* Some other nops. */ |
220 | #define CROR_151515 0x4def7b82 | |
221 | #define CROR_313131 0x4ffffb82 | |
222 | ||
cedb70c5 | 223 | /* .glink entries for the first 32k functions are two instructions. */ |
5d1634d7 AM |
224 | #define LI_R0_0 0x38000000 /* li %r0,0 */ |
225 | #define B_DOT 0x48000000 /* b . */ | |
226 | ||
227 | /* After that, we need two instructions to load the index, followed by | |
228 | a branch. */ | |
229 | #define LIS_R0_0 0x3c000000 /* lis %r0,0 */ | |
10ed1bba | 230 | #define ORI_R0_R0_0 0x60000000 /* ori %r0,%r0,0 */ |
41bd81ab | 231 | |
deb0e272 AM |
232 | /* Instructions used by the save and restore reg functions. */ |
233 | #define STD_R0_0R1 0xf8010000 /* std %r0,0(%r1) */ | |
234 | #define STD_R0_0R12 0xf80c0000 /* std %r0,0(%r12) */ | |
235 | #define LD_R0_0R1 0xe8010000 /* ld %r0,0(%r1) */ | |
236 | #define LD_R0_0R12 0xe80c0000 /* ld %r0,0(%r12) */ | |
82bd7b59 AM |
237 | #define STFD_FR0_0R1 0xd8010000 /* stfd %fr0,0(%r1) */ |
238 | #define LFD_FR0_0R1 0xc8010000 /* lfd %fr0,0(%r1) */ | |
deb0e272 AM |
239 | #define LI_R12_0 0x39800000 /* li %r12,0 */ |
240 | #define STVX_VR0_R12_R0 0x7c0c01ce /* stvx %v0,%r12,%r0 */ | |
241 | #define LVX_VR0_R12_R0 0x7c0c00ce /* lvx %v0,%r12,%r0 */ | |
242 | #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */ | |
82bd7b59 AM |
243 | #define BLR 0x4e800020 /* blr */ |
244 | ||
41bd81ab AM |
245 | /* Since .opd is an array of descriptors and each entry will end up |
246 | with identical R_PPC64_RELATIVE relocs, there is really no need to | |
247 | propagate .opd relocs; The dynamic linker should be taught to | |
1e2f5b6e | 248 | relocate .opd without reloc entries. */ |
41bd81ab AM |
249 | #ifndef NO_OPD_RELOCS |
250 | #define NO_OPD_RELOCS 0 | |
251 | #endif | |
810d4e75 | 252 | |
a4b6fadd AM |
253 | #ifndef ARRAY_SIZE |
254 | #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0])) | |
255 | #endif | |
256 | ||
810d4e75 AM |
257 | static inline int |
258 | abiversion (bfd *abfd) | |
259 | { | |
260 | return elf_elfheader (abfd)->e_flags & EF_PPC64_ABI; | |
261 | } | |
262 | ||
263 | static inline void | |
264 | set_abiversion (bfd *abfd, int ver) | |
265 | { | |
266 | elf_elfheader (abfd)->e_flags &= ~EF_PPC64_ABI; | |
267 | elf_elfheader (abfd)->e_flags |= ver & EF_PPC64_ABI; | |
268 | } | |
5bd4f169 | 269 | \f |
f5e87a1d | 270 | #define ONES(n) (((bfd_vma) 1 << ((n) - 1) << 1) - 1) |
b34976b6 | 271 | |
5bd4f169 | 272 | /* Relocation HOWTO's. */ |
04c9666a | 273 | static reloc_howto_type *ppc64_elf_howto_table[(int) R_PPC64_max]; |
5bd4f169 | 274 | |
f3185997 NC |
275 | static reloc_howto_type ppc64_elf_howto_raw[] = |
276 | { | |
5bd4f169 AM |
277 | /* This reloc does nothing. */ |
278 | HOWTO (R_PPC64_NONE, /* type */ | |
279 | 0, /* rightshift */ | |
6346d5ca AM |
280 | 3, /* size (0 = byte, 1 = short, 2 = long) */ |
281 | 0, /* bitsize */ | |
b34976b6 | 282 | FALSE, /* pc_relative */ |
5bd4f169 | 283 | 0, /* bitpos */ |
f5e87a1d | 284 | complain_overflow_dont, /* complain_on_overflow */ |
5bd4f169 AM |
285 | bfd_elf_generic_reloc, /* special_function */ |
286 | "R_PPC64_NONE", /* name */ | |
b34976b6 | 287 | FALSE, /* partial_inplace */ |
d006db6c | 288 | 0, /* src_mask */ |
5bd4f169 | 289 | 0, /* dst_mask */ |
b34976b6 | 290 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
291 | |
292 | /* A standard 32 bit relocation. */ | |
293 | HOWTO (R_PPC64_ADDR32, /* type */ | |
294 | 0, /* rightshift */ | |
295 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
296 | 32, /* bitsize */ | |
b34976b6 | 297 | FALSE, /* pc_relative */ |
5bd4f169 AM |
298 | 0, /* bitpos */ |
299 | complain_overflow_bitfield, /* complain_on_overflow */ | |
300 | bfd_elf_generic_reloc, /* special_function */ | |
301 | "R_PPC64_ADDR32", /* name */ | |
b34976b6 | 302 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
303 | 0, /* src_mask */ |
304 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 305 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
306 | |
307 | /* An absolute 26 bit branch; the lower two bits must be zero. | |
308 | FIXME: we don't check that, we just clear them. */ | |
309 | HOWTO (R_PPC64_ADDR24, /* type */ | |
310 | 0, /* rightshift */ | |
311 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
312 | 26, /* bitsize */ | |
b34976b6 | 313 | FALSE, /* pc_relative */ |
5bd4f169 AM |
314 | 0, /* bitpos */ |
315 | complain_overflow_bitfield, /* complain_on_overflow */ | |
316 | bfd_elf_generic_reloc, /* special_function */ | |
317 | "R_PPC64_ADDR24", /* name */ | |
b34976b6 | 318 | FALSE, /* partial_inplace */ |
d006db6c | 319 | 0, /* src_mask */ |
f5e87a1d | 320 | 0x03fffffc, /* dst_mask */ |
b34976b6 | 321 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
322 | |
323 | /* A standard 16 bit relocation. */ | |
324 | HOWTO (R_PPC64_ADDR16, /* type */ | |
325 | 0, /* rightshift */ | |
326 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
327 | 16, /* bitsize */ | |
b34976b6 | 328 | FALSE, /* pc_relative */ |
5bd4f169 AM |
329 | 0, /* bitpos */ |
330 | complain_overflow_bitfield, /* complain_on_overflow */ | |
331 | bfd_elf_generic_reloc, /* special_function */ | |
332 | "R_PPC64_ADDR16", /* name */ | |
b34976b6 | 333 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
334 | 0, /* src_mask */ |
335 | 0xffff, /* dst_mask */ | |
b34976b6 | 336 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
337 | |
338 | /* A 16 bit relocation without overflow. */ | |
339 | HOWTO (R_PPC64_ADDR16_LO, /* type */ | |
340 | 0, /* rightshift */ | |
341 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
342 | 16, /* bitsize */ | |
b34976b6 | 343 | FALSE, /* pc_relative */ |
5bd4f169 AM |
344 | 0, /* bitpos */ |
345 | complain_overflow_dont,/* complain_on_overflow */ | |
346 | bfd_elf_generic_reloc, /* special_function */ | |
347 | "R_PPC64_ADDR16_LO", /* name */ | |
b34976b6 | 348 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
349 | 0, /* src_mask */ |
350 | 0xffff, /* dst_mask */ | |
b34976b6 | 351 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
352 | |
353 | /* Bits 16-31 of an address. */ | |
354 | HOWTO (R_PPC64_ADDR16_HI, /* type */ | |
355 | 16, /* rightshift */ | |
356 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
357 | 16, /* bitsize */ | |
b34976b6 | 358 | FALSE, /* pc_relative */ |
5bd4f169 | 359 | 0, /* bitpos */ |
f9c6b907 | 360 | complain_overflow_signed, /* complain_on_overflow */ |
5bd4f169 AM |
361 | bfd_elf_generic_reloc, /* special_function */ |
362 | "R_PPC64_ADDR16_HI", /* name */ | |
b34976b6 | 363 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
364 | 0, /* src_mask */ |
365 | 0xffff, /* dst_mask */ | |
b34976b6 | 366 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
367 | |
368 | /* Bits 16-31 of an address, plus 1 if the contents of the low 16 | |
369 | bits, treated as a signed number, is negative. */ | |
370 | HOWTO (R_PPC64_ADDR16_HA, /* type */ | |
371 | 16, /* rightshift */ | |
372 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
373 | 16, /* bitsize */ | |
b34976b6 | 374 | FALSE, /* pc_relative */ |
5bd4f169 | 375 | 0, /* bitpos */ |
f9c6b907 | 376 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 377 | ppc64_elf_ha_reloc, /* special_function */ |
5bd4f169 | 378 | "R_PPC64_ADDR16_HA", /* name */ |
b34976b6 | 379 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
380 | 0, /* src_mask */ |
381 | 0xffff, /* dst_mask */ | |
b34976b6 | 382 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
383 | |
384 | /* An absolute 16 bit branch; the lower two bits must be zero. | |
385 | FIXME: we don't check that, we just clear them. */ | |
386 | HOWTO (R_PPC64_ADDR14, /* type */ | |
387 | 0, /* rightshift */ | |
388 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
389 | 16, /* bitsize */ | |
b34976b6 | 390 | FALSE, /* pc_relative */ |
5bd4f169 | 391 | 0, /* bitpos */ |
b80eed39 | 392 | complain_overflow_signed, /* complain_on_overflow */ |
2441e016 | 393 | ppc64_elf_branch_reloc, /* special_function */ |
5bd4f169 | 394 | "R_PPC64_ADDR14", /* name */ |
b34976b6 | 395 | FALSE, /* partial_inplace */ |
d006db6c | 396 | 0, /* src_mask */ |
f5e87a1d | 397 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 398 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
399 | |
400 | /* An absolute 16 bit branch, for which bit 10 should be set to | |
401 | indicate that the branch is expected to be taken. The lower two | |
402 | bits must be zero. */ | |
403 | HOWTO (R_PPC64_ADDR14_BRTAKEN, /* type */ | |
404 | 0, /* rightshift */ | |
405 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
406 | 16, /* bitsize */ | |
b34976b6 | 407 | FALSE, /* pc_relative */ |
5bd4f169 | 408 | 0, /* bitpos */ |
b80eed39 | 409 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 410 | ppc64_elf_brtaken_reloc, /* special_function */ |
5bd4f169 | 411 | "R_PPC64_ADDR14_BRTAKEN",/* name */ |
b34976b6 | 412 | FALSE, /* partial_inplace */ |
d006db6c | 413 | 0, /* src_mask */ |
f5e87a1d | 414 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 415 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
416 | |
417 | /* An absolute 16 bit branch, for which bit 10 should be set to | |
418 | indicate that the branch is not expected to be taken. The lower | |
419 | two bits must be zero. */ | |
420 | HOWTO (R_PPC64_ADDR14_BRNTAKEN, /* type */ | |
421 | 0, /* rightshift */ | |
422 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
423 | 16, /* bitsize */ | |
b34976b6 | 424 | FALSE, /* pc_relative */ |
5bd4f169 | 425 | 0, /* bitpos */ |
b80eed39 | 426 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 427 | ppc64_elf_brtaken_reloc, /* special_function */ |
5bd4f169 | 428 | "R_PPC64_ADDR14_BRNTAKEN",/* name */ |
b34976b6 | 429 | FALSE, /* partial_inplace */ |
d006db6c | 430 | 0, /* src_mask */ |
f5e87a1d | 431 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 432 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
433 | |
434 | /* A relative 26 bit branch; the lower two bits must be zero. */ | |
435 | HOWTO (R_PPC64_REL24, /* type */ | |
436 | 0, /* rightshift */ | |
437 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
438 | 26, /* bitsize */ | |
b34976b6 | 439 | TRUE, /* pc_relative */ |
5bd4f169 AM |
440 | 0, /* bitpos */ |
441 | complain_overflow_signed, /* complain_on_overflow */ | |
2441e016 | 442 | ppc64_elf_branch_reloc, /* special_function */ |
5bd4f169 | 443 | "R_PPC64_REL24", /* name */ |
b34976b6 | 444 | FALSE, /* partial_inplace */ |
d006db6c | 445 | 0, /* src_mask */ |
f5e87a1d | 446 | 0x03fffffc, /* dst_mask */ |
b34976b6 | 447 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
448 | |
449 | /* A relative 16 bit branch; the lower two bits must be zero. */ | |
450 | HOWTO (R_PPC64_REL14, /* type */ | |
451 | 0, /* rightshift */ | |
452 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
453 | 16, /* bitsize */ | |
b34976b6 | 454 | TRUE, /* pc_relative */ |
5bd4f169 AM |
455 | 0, /* bitpos */ |
456 | complain_overflow_signed, /* complain_on_overflow */ | |
2441e016 | 457 | ppc64_elf_branch_reloc, /* special_function */ |
5bd4f169 | 458 | "R_PPC64_REL14", /* name */ |
b34976b6 | 459 | FALSE, /* partial_inplace */ |
d006db6c | 460 | 0, /* src_mask */ |
f5e87a1d | 461 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 462 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
463 | |
464 | /* A relative 16 bit branch. Bit 10 should be set to indicate that | |
465 | the branch is expected to be taken. The lower two bits must be | |
466 | zero. */ | |
467 | HOWTO (R_PPC64_REL14_BRTAKEN, /* type */ | |
468 | 0, /* rightshift */ | |
469 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
470 | 16, /* bitsize */ | |
b34976b6 | 471 | TRUE, /* pc_relative */ |
5bd4f169 AM |
472 | 0, /* bitpos */ |
473 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 474 | ppc64_elf_brtaken_reloc, /* special_function */ |
5bd4f169 | 475 | "R_PPC64_REL14_BRTAKEN", /* name */ |
b34976b6 | 476 | FALSE, /* partial_inplace */ |
d006db6c | 477 | 0, /* src_mask */ |
f5e87a1d | 478 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 479 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
480 | |
481 | /* A relative 16 bit branch. Bit 10 should be set to indicate that | |
482 | the branch is not expected to be taken. The lower two bits must | |
483 | be zero. */ | |
484 | HOWTO (R_PPC64_REL14_BRNTAKEN, /* type */ | |
485 | 0, /* rightshift */ | |
486 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
487 | 16, /* bitsize */ | |
b34976b6 | 488 | TRUE, /* pc_relative */ |
5bd4f169 AM |
489 | 0, /* bitpos */ |
490 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 491 | ppc64_elf_brtaken_reloc, /* special_function */ |
5bd4f169 | 492 | "R_PPC64_REL14_BRNTAKEN",/* name */ |
b34976b6 | 493 | FALSE, /* partial_inplace */ |
d006db6c | 494 | 0, /* src_mask */ |
f5e87a1d | 495 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 496 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
497 | |
498 | /* Like R_PPC64_ADDR16, but referring to the GOT table entry for the | |
499 | symbol. */ | |
500 | HOWTO (R_PPC64_GOT16, /* type */ | |
501 | 0, /* rightshift */ | |
502 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
503 | 16, /* bitsize */ | |
b34976b6 | 504 | FALSE, /* pc_relative */ |
5bd4f169 AM |
505 | 0, /* bitpos */ |
506 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 507 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 508 | "R_PPC64_GOT16", /* name */ |
b34976b6 | 509 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
510 | 0, /* src_mask */ |
511 | 0xffff, /* dst_mask */ | |
b34976b6 | 512 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
513 | |
514 | /* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for | |
515 | the symbol. */ | |
516 | HOWTO (R_PPC64_GOT16_LO, /* type */ | |
517 | 0, /* rightshift */ | |
518 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
519 | 16, /* bitsize */ | |
b34976b6 | 520 | FALSE, /* pc_relative */ |
5bd4f169 AM |
521 | 0, /* bitpos */ |
522 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 523 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 524 | "R_PPC64_GOT16_LO", /* name */ |
b34976b6 | 525 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
526 | 0, /* src_mask */ |
527 | 0xffff, /* dst_mask */ | |
b34976b6 | 528 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
529 | |
530 | /* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for | |
531 | the symbol. */ | |
532 | HOWTO (R_PPC64_GOT16_HI, /* type */ | |
533 | 16, /* rightshift */ | |
534 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
535 | 16, /* bitsize */ | |
b34976b6 | 536 | FALSE, /* pc_relative */ |
5bd4f169 | 537 | 0, /* bitpos */ |
f9c6b907 | 538 | complain_overflow_signed,/* complain_on_overflow */ |
805fc799 | 539 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 540 | "R_PPC64_GOT16_HI", /* name */ |
b34976b6 | 541 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
542 | 0, /* src_mask */ |
543 | 0xffff, /* dst_mask */ | |
b34976b6 | 544 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
545 | |
546 | /* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for | |
547 | the symbol. */ | |
548 | HOWTO (R_PPC64_GOT16_HA, /* type */ | |
549 | 16, /* rightshift */ | |
550 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
551 | 16, /* bitsize */ | |
b34976b6 | 552 | FALSE, /* pc_relative */ |
5bd4f169 | 553 | 0, /* bitpos */ |
f9c6b907 | 554 | complain_overflow_signed,/* complain_on_overflow */ |
805fc799 | 555 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 556 | "R_PPC64_GOT16_HA", /* name */ |
b34976b6 | 557 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
558 | 0, /* src_mask */ |
559 | 0xffff, /* dst_mask */ | |
b34976b6 | 560 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
561 | |
562 | /* This is used only by the dynamic linker. The symbol should exist | |
563 | both in the object being run and in some shared library. The | |
564 | dynamic linker copies the data addressed by the symbol from the | |
565 | shared library into the object, because the object being | |
566 | run has to have the data at some particular address. */ | |
567 | HOWTO (R_PPC64_COPY, /* type */ | |
568 | 0, /* rightshift */ | |
f5e87a1d AM |
569 | 0, /* this one is variable size */ |
570 | 0, /* bitsize */ | |
b34976b6 | 571 | FALSE, /* pc_relative */ |
5bd4f169 | 572 | 0, /* bitpos */ |
f5e87a1d AM |
573 | complain_overflow_dont, /* complain_on_overflow */ |
574 | ppc64_elf_unhandled_reloc, /* special_function */ | |
5bd4f169 | 575 | "R_PPC64_COPY", /* name */ |
b34976b6 | 576 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
577 | 0, /* src_mask */ |
578 | 0, /* dst_mask */ | |
b34976b6 | 579 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
580 | |
581 | /* Like R_PPC64_ADDR64, but used when setting global offset table | |
582 | entries. */ | |
583 | HOWTO (R_PPC64_GLOB_DAT, /* type */ | |
584 | 0, /* rightshift */ | |
585 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
586 | 64, /* bitsize */ | |
b34976b6 | 587 | FALSE, /* pc_relative */ |
5bd4f169 AM |
588 | 0, /* bitpos */ |
589 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 590 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 591 | "R_PPC64_GLOB_DAT", /* name */ |
b34976b6 | 592 | FALSE, /* partial_inplace */ |
5bd4f169 | 593 | 0, /* src_mask */ |
f5e87a1d | 594 | ONES (64), /* dst_mask */ |
b34976b6 | 595 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
596 | |
597 | /* Created by the link editor. Marks a procedure linkage table | |
598 | entry for a symbol. */ | |
599 | HOWTO (R_PPC64_JMP_SLOT, /* type */ | |
600 | 0, /* rightshift */ | |
601 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
602 | 0, /* bitsize */ | |
b34976b6 | 603 | FALSE, /* pc_relative */ |
5bd4f169 AM |
604 | 0, /* bitpos */ |
605 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 606 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 607 | "R_PPC64_JMP_SLOT", /* name */ |
b34976b6 | 608 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
609 | 0, /* src_mask */ |
610 | 0, /* dst_mask */ | |
b34976b6 | 611 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
612 | |
613 | /* Used only by the dynamic linker. When the object is run, this | |
614 | doubleword64 is set to the load address of the object, plus the | |
615 | addend. */ | |
616 | HOWTO (R_PPC64_RELATIVE, /* type */ | |
617 | 0, /* rightshift */ | |
618 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
619 | 64, /* bitsize */ | |
b34976b6 | 620 | FALSE, /* pc_relative */ |
5bd4f169 AM |
621 | 0, /* bitpos */ |
622 | complain_overflow_dont, /* complain_on_overflow */ | |
623 | bfd_elf_generic_reloc, /* special_function */ | |
624 | "R_PPC64_RELATIVE", /* name */ | |
b34976b6 | 625 | FALSE, /* partial_inplace */ |
5bd4f169 | 626 | 0, /* src_mask */ |
f5e87a1d | 627 | ONES (64), /* dst_mask */ |
b34976b6 | 628 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
629 | |
630 | /* Like R_PPC64_ADDR32, but may be unaligned. */ | |
631 | HOWTO (R_PPC64_UADDR32, /* type */ | |
632 | 0, /* rightshift */ | |
633 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
634 | 32, /* bitsize */ | |
b34976b6 | 635 | FALSE, /* pc_relative */ |
5bd4f169 AM |
636 | 0, /* bitpos */ |
637 | complain_overflow_bitfield, /* complain_on_overflow */ | |
638 | bfd_elf_generic_reloc, /* special_function */ | |
639 | "R_PPC64_UADDR32", /* name */ | |
b34976b6 | 640 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
641 | 0, /* src_mask */ |
642 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 643 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
644 | |
645 | /* Like R_PPC64_ADDR16, but may be unaligned. */ | |
646 | HOWTO (R_PPC64_UADDR16, /* type */ | |
647 | 0, /* rightshift */ | |
648 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
649 | 16, /* bitsize */ | |
b34976b6 | 650 | FALSE, /* pc_relative */ |
5bd4f169 AM |
651 | 0, /* bitpos */ |
652 | complain_overflow_bitfield, /* complain_on_overflow */ | |
653 | bfd_elf_generic_reloc, /* special_function */ | |
654 | "R_PPC64_UADDR16", /* name */ | |
b34976b6 | 655 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
656 | 0, /* src_mask */ |
657 | 0xffff, /* dst_mask */ | |
b34976b6 | 658 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
659 | |
660 | /* 32-bit PC relative. */ | |
661 | HOWTO (R_PPC64_REL32, /* type */ | |
662 | 0, /* rightshift */ | |
663 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
664 | 32, /* bitsize */ | |
b34976b6 | 665 | TRUE, /* pc_relative */ |
5bd4f169 | 666 | 0, /* bitpos */ |
5bd4f169 AM |
667 | complain_overflow_signed, /* complain_on_overflow */ |
668 | bfd_elf_generic_reloc, /* special_function */ | |
669 | "R_PPC64_REL32", /* name */ | |
b34976b6 | 670 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
671 | 0, /* src_mask */ |
672 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 673 | TRUE), /* pcrel_offset */ |
5bd4f169 | 674 | |
10ed1bba | 675 | /* 32-bit relocation to the symbol's procedure linkage table. */ |
5bd4f169 AM |
676 | HOWTO (R_PPC64_PLT32, /* type */ |
677 | 0, /* rightshift */ | |
678 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
679 | 32, /* bitsize */ | |
b34976b6 | 680 | FALSE, /* pc_relative */ |
5bd4f169 AM |
681 | 0, /* bitpos */ |
682 | complain_overflow_bitfield, /* complain_on_overflow */ | |
805fc799 | 683 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 684 | "R_PPC64_PLT32", /* name */ |
b34976b6 | 685 | FALSE, /* partial_inplace */ |
5bd4f169 | 686 | 0, /* src_mask */ |
f5e87a1d | 687 | 0xffffffff, /* dst_mask */ |
b34976b6 | 688 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
689 | |
690 | /* 32-bit PC relative relocation to the symbol's procedure linkage table. | |
691 | FIXME: R_PPC64_PLTREL32 not supported. */ | |
692 | HOWTO (R_PPC64_PLTREL32, /* type */ | |
693 | 0, /* rightshift */ | |
694 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
695 | 32, /* bitsize */ | |
b34976b6 | 696 | TRUE, /* pc_relative */ |
5bd4f169 AM |
697 | 0, /* bitpos */ |
698 | complain_overflow_signed, /* complain_on_overflow */ | |
3ce51288 | 699 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 700 | "R_PPC64_PLTREL32", /* name */ |
b34976b6 | 701 | FALSE, /* partial_inplace */ |
5bd4f169 | 702 | 0, /* src_mask */ |
f5e87a1d | 703 | 0xffffffff, /* dst_mask */ |
b34976b6 | 704 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
705 | |
706 | /* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for | |
707 | the symbol. */ | |
708 | HOWTO (R_PPC64_PLT16_LO, /* type */ | |
709 | 0, /* rightshift */ | |
710 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
711 | 16, /* bitsize */ | |
b34976b6 | 712 | FALSE, /* pc_relative */ |
5bd4f169 AM |
713 | 0, /* bitpos */ |
714 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 715 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 716 | "R_PPC64_PLT16_LO", /* name */ |
b34976b6 | 717 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
718 | 0, /* src_mask */ |
719 | 0xffff, /* dst_mask */ | |
b34976b6 | 720 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
721 | |
722 | /* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for | |
723 | the symbol. */ | |
724 | HOWTO (R_PPC64_PLT16_HI, /* type */ | |
725 | 16, /* rightshift */ | |
726 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
727 | 16, /* bitsize */ | |
b34976b6 | 728 | FALSE, /* pc_relative */ |
5bd4f169 | 729 | 0, /* bitpos */ |
f9c6b907 | 730 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 731 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 732 | "R_PPC64_PLT16_HI", /* name */ |
b34976b6 | 733 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
734 | 0, /* src_mask */ |
735 | 0xffff, /* dst_mask */ | |
b34976b6 | 736 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
737 | |
738 | /* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for | |
739 | the symbol. */ | |
740 | HOWTO (R_PPC64_PLT16_HA, /* type */ | |
741 | 16, /* rightshift */ | |
742 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
743 | 16, /* bitsize */ | |
b34976b6 | 744 | FALSE, /* pc_relative */ |
5bd4f169 | 745 | 0, /* bitpos */ |
f9c6b907 | 746 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 747 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 748 | "R_PPC64_PLT16_HA", /* name */ |
b34976b6 | 749 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
750 | 0, /* src_mask */ |
751 | 0xffff, /* dst_mask */ | |
b34976b6 | 752 | FALSE), /* pcrel_offset */ |
5bd4f169 | 753 | |
c061c2d8 | 754 | /* 16-bit section relative relocation. */ |
5bd4f169 AM |
755 | HOWTO (R_PPC64_SECTOFF, /* type */ |
756 | 0, /* rightshift */ | |
c061c2d8 AM |
757 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
758 | 16, /* bitsize */ | |
b34976b6 | 759 | FALSE, /* pc_relative */ |
5bd4f169 | 760 | 0, /* bitpos */ |
b80eed39 | 761 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 762 | ppc64_elf_sectoff_reloc, /* special_function */ |
5bd4f169 | 763 | "R_PPC64_SECTOFF", /* name */ |
b34976b6 | 764 | FALSE, /* partial_inplace */ |
5bd4f169 | 765 | 0, /* src_mask */ |
c061c2d8 | 766 | 0xffff, /* dst_mask */ |
b34976b6 | 767 | FALSE), /* pcrel_offset */ |
5bd4f169 | 768 | |
c061c2d8 | 769 | /* Like R_PPC64_SECTOFF, but no overflow warning. */ |
5bd4f169 AM |
770 | HOWTO (R_PPC64_SECTOFF_LO, /* type */ |
771 | 0, /* rightshift */ | |
772 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
773 | 16, /* bitsize */ | |
b34976b6 | 774 | FALSE, /* pc_relative */ |
5bd4f169 AM |
775 | 0, /* bitpos */ |
776 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 777 | ppc64_elf_sectoff_reloc, /* special_function */ |
5bd4f169 | 778 | "R_PPC64_SECTOFF_LO", /* name */ |
b34976b6 | 779 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
780 | 0, /* src_mask */ |
781 | 0xffff, /* dst_mask */ | |
b34976b6 | 782 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
783 | |
784 | /* 16-bit upper half section relative relocation. */ | |
785 | HOWTO (R_PPC64_SECTOFF_HI, /* type */ | |
786 | 16, /* rightshift */ | |
787 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
788 | 16, /* bitsize */ | |
b34976b6 | 789 | FALSE, /* pc_relative */ |
5bd4f169 | 790 | 0, /* bitpos */ |
f9c6b907 | 791 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 792 | ppc64_elf_sectoff_reloc, /* special_function */ |
5bd4f169 | 793 | "R_PPC64_SECTOFF_HI", /* name */ |
b34976b6 | 794 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
795 | 0, /* src_mask */ |
796 | 0xffff, /* dst_mask */ | |
b34976b6 | 797 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
798 | |
799 | /* 16-bit upper half adjusted section relative relocation. */ | |
800 | HOWTO (R_PPC64_SECTOFF_HA, /* type */ | |
801 | 16, /* rightshift */ | |
802 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
803 | 16, /* bitsize */ | |
b34976b6 | 804 | FALSE, /* pc_relative */ |
5bd4f169 | 805 | 0, /* bitpos */ |
f9c6b907 | 806 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 807 | ppc64_elf_sectoff_ha_reloc, /* special_function */ |
5bd4f169 | 808 | "R_PPC64_SECTOFF_HA", /* name */ |
b34976b6 | 809 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
810 | 0, /* src_mask */ |
811 | 0xffff, /* dst_mask */ | |
b34976b6 | 812 | FALSE), /* pcrel_offset */ |
5bd4f169 | 813 | |
04c9666a AM |
814 | /* Like R_PPC64_REL24 without touching the two least significant bits. */ |
815 | HOWTO (R_PPC64_REL30, /* type */ | |
5bd4f169 AM |
816 | 2, /* rightshift */ |
817 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
818 | 30, /* bitsize */ | |
b34976b6 | 819 | TRUE, /* pc_relative */ |
5bd4f169 AM |
820 | 0, /* bitpos */ |
821 | complain_overflow_dont, /* complain_on_overflow */ | |
822 | bfd_elf_generic_reloc, /* special_function */ | |
04c9666a | 823 | "R_PPC64_REL30", /* name */ |
b34976b6 | 824 | FALSE, /* partial_inplace */ |
d006db6c | 825 | 0, /* src_mask */ |
5bd4f169 | 826 | 0xfffffffc, /* dst_mask */ |
b34976b6 | 827 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
828 | |
829 | /* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */ | |
830 | ||
831 | /* A standard 64-bit relocation. */ | |
832 | HOWTO (R_PPC64_ADDR64, /* type */ | |
833 | 0, /* rightshift */ | |
834 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
835 | 64, /* bitsize */ | |
b34976b6 | 836 | FALSE, /* pc_relative */ |
5bd4f169 AM |
837 | 0, /* bitpos */ |
838 | complain_overflow_dont, /* complain_on_overflow */ | |
839 | bfd_elf_generic_reloc, /* special_function */ | |
840 | "R_PPC64_ADDR64", /* name */ | |
b34976b6 | 841 | FALSE, /* partial_inplace */ |
5bd4f169 | 842 | 0, /* src_mask */ |
f5e87a1d | 843 | ONES (64), /* dst_mask */ |
b34976b6 | 844 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
845 | |
846 | /* The bits 32-47 of an address. */ | |
847 | HOWTO (R_PPC64_ADDR16_HIGHER, /* type */ | |
848 | 32, /* rightshift */ | |
849 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
850 | 16, /* bitsize */ | |
b34976b6 | 851 | FALSE, /* pc_relative */ |
5bd4f169 AM |
852 | 0, /* bitpos */ |
853 | complain_overflow_dont, /* complain_on_overflow */ | |
854 | bfd_elf_generic_reloc, /* special_function */ | |
855 | "R_PPC64_ADDR16_HIGHER", /* name */ | |
b34976b6 | 856 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
857 | 0, /* src_mask */ |
858 | 0xffff, /* dst_mask */ | |
b34976b6 | 859 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
860 | |
861 | /* The bits 32-47 of an address, plus 1 if the contents of the low | |
862 | 16 bits, treated as a signed number, is negative. */ | |
863 | HOWTO (R_PPC64_ADDR16_HIGHERA, /* type */ | |
864 | 32, /* rightshift */ | |
865 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
866 | 16, /* bitsize */ | |
b34976b6 | 867 | FALSE, /* pc_relative */ |
5bd4f169 AM |
868 | 0, /* bitpos */ |
869 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 870 | ppc64_elf_ha_reloc, /* special_function */ |
5bd4f169 | 871 | "R_PPC64_ADDR16_HIGHERA", /* name */ |
b34976b6 | 872 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
873 | 0, /* src_mask */ |
874 | 0xffff, /* dst_mask */ | |
b34976b6 | 875 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
876 | |
877 | /* The bits 48-63 of an address. */ | |
878 | HOWTO (R_PPC64_ADDR16_HIGHEST,/* type */ | |
879 | 48, /* rightshift */ | |
880 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
881 | 16, /* bitsize */ | |
b34976b6 | 882 | FALSE, /* pc_relative */ |
5bd4f169 AM |
883 | 0, /* bitpos */ |
884 | complain_overflow_dont, /* complain_on_overflow */ | |
885 | bfd_elf_generic_reloc, /* special_function */ | |
886 | "R_PPC64_ADDR16_HIGHEST", /* name */ | |
b34976b6 | 887 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
888 | 0, /* src_mask */ |
889 | 0xffff, /* dst_mask */ | |
b34976b6 | 890 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
891 | |
892 | /* The bits 48-63 of an address, plus 1 if the contents of the low | |
893 | 16 bits, treated as a signed number, is negative. */ | |
894 | HOWTO (R_PPC64_ADDR16_HIGHESTA,/* type */ | |
895 | 48, /* rightshift */ | |
896 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
897 | 16, /* bitsize */ | |
b34976b6 | 898 | FALSE, /* pc_relative */ |
5bd4f169 AM |
899 | 0, /* bitpos */ |
900 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 901 | ppc64_elf_ha_reloc, /* special_function */ |
5bd4f169 | 902 | "R_PPC64_ADDR16_HIGHESTA", /* name */ |
b34976b6 | 903 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
904 | 0, /* src_mask */ |
905 | 0xffff, /* dst_mask */ | |
b34976b6 | 906 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
907 | |
908 | /* Like ADDR64, but may be unaligned. */ | |
909 | HOWTO (R_PPC64_UADDR64, /* type */ | |
910 | 0, /* rightshift */ | |
911 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
912 | 64, /* bitsize */ | |
b34976b6 | 913 | FALSE, /* pc_relative */ |
5bd4f169 AM |
914 | 0, /* bitpos */ |
915 | complain_overflow_dont, /* complain_on_overflow */ | |
916 | bfd_elf_generic_reloc, /* special_function */ | |
917 | "R_PPC64_UADDR64", /* name */ | |
b34976b6 | 918 | FALSE, /* partial_inplace */ |
5bd4f169 | 919 | 0, /* src_mask */ |
f5e87a1d | 920 | ONES (64), /* dst_mask */ |
b34976b6 | 921 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
922 | |
923 | /* 64-bit relative relocation. */ | |
924 | HOWTO (R_PPC64_REL64, /* type */ | |
925 | 0, /* rightshift */ | |
926 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
927 | 64, /* bitsize */ | |
b34976b6 | 928 | TRUE, /* pc_relative */ |
5bd4f169 AM |
929 | 0, /* bitpos */ |
930 | complain_overflow_dont, /* complain_on_overflow */ | |
931 | bfd_elf_generic_reloc, /* special_function */ | |
932 | "R_PPC64_REL64", /* name */ | |
b34976b6 | 933 | FALSE, /* partial_inplace */ |
5bd4f169 | 934 | 0, /* src_mask */ |
f5e87a1d | 935 | ONES (64), /* dst_mask */ |
b34976b6 | 936 | TRUE), /* pcrel_offset */ |
5bd4f169 | 937 | |
cedb70c5 | 938 | /* 64-bit relocation to the symbol's procedure linkage table. */ |
5bd4f169 AM |
939 | HOWTO (R_PPC64_PLT64, /* type */ |
940 | 0, /* rightshift */ | |
941 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
942 | 64, /* bitsize */ | |
b34976b6 | 943 | FALSE, /* pc_relative */ |
5bd4f169 AM |
944 | 0, /* bitpos */ |
945 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 946 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 947 | "R_PPC64_PLT64", /* name */ |
b34976b6 | 948 | FALSE, /* partial_inplace */ |
5bd4f169 | 949 | 0, /* src_mask */ |
f5e87a1d | 950 | ONES (64), /* dst_mask */ |
b34976b6 | 951 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
952 | |
953 | /* 64-bit PC relative relocation to the symbol's procedure linkage | |
954 | table. */ | |
955 | /* FIXME: R_PPC64_PLTREL64 not supported. */ | |
956 | HOWTO (R_PPC64_PLTREL64, /* type */ | |
957 | 0, /* rightshift */ | |
958 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
959 | 64, /* bitsize */ | |
b34976b6 | 960 | TRUE, /* pc_relative */ |
5bd4f169 AM |
961 | 0, /* bitpos */ |
962 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 963 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 964 | "R_PPC64_PLTREL64", /* name */ |
b34976b6 | 965 | FALSE, /* partial_inplace */ |
5bd4f169 | 966 | 0, /* src_mask */ |
f5e87a1d | 967 | ONES (64), /* dst_mask */ |
b34976b6 | 968 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
969 | |
970 | /* 16 bit TOC-relative relocation. */ | |
971 | ||
972 | /* R_PPC64_TOC16 47 half16* S + A - .TOC. */ | |
973 | HOWTO (R_PPC64_TOC16, /* type */ | |
974 | 0, /* rightshift */ | |
975 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
976 | 16, /* bitsize */ | |
b34976b6 | 977 | FALSE, /* pc_relative */ |
5bd4f169 AM |
978 | 0, /* bitpos */ |
979 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 980 | ppc64_elf_toc_reloc, /* special_function */ |
5bd4f169 | 981 | "R_PPC64_TOC16", /* name */ |
b34976b6 | 982 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
983 | 0, /* src_mask */ |
984 | 0xffff, /* dst_mask */ | |
b34976b6 | 985 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
986 | |
987 | /* 16 bit TOC-relative relocation without overflow. */ | |
988 | ||
989 | /* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */ | |
990 | HOWTO (R_PPC64_TOC16_LO, /* type */ | |
991 | 0, /* rightshift */ | |
992 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
993 | 16, /* bitsize */ | |
b34976b6 | 994 | FALSE, /* pc_relative */ |
5bd4f169 AM |
995 | 0, /* bitpos */ |
996 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 997 | ppc64_elf_toc_reloc, /* special_function */ |
5bd4f169 | 998 | "R_PPC64_TOC16_LO", /* name */ |
b34976b6 | 999 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1000 | 0, /* src_mask */ |
1001 | 0xffff, /* dst_mask */ | |
b34976b6 | 1002 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
1003 | |
1004 | /* 16 bit TOC-relative relocation, high 16 bits. */ | |
1005 | ||
1006 | /* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */ | |
1007 | HOWTO (R_PPC64_TOC16_HI, /* type */ | |
1008 | 16, /* rightshift */ | |
1009 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1010 | 16, /* bitsize */ | |
b34976b6 | 1011 | FALSE, /* pc_relative */ |
5bd4f169 | 1012 | 0, /* bitpos */ |
f9c6b907 | 1013 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 1014 | ppc64_elf_toc_reloc, /* special_function */ |
5bd4f169 | 1015 | "R_PPC64_TOC16_HI", /* name */ |
b34976b6 | 1016 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1017 | 0, /* src_mask */ |
1018 | 0xffff, /* dst_mask */ | |
b34976b6 | 1019 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
1020 | |
1021 | /* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the | |
1022 | contents of the low 16 bits, treated as a signed number, is | |
1023 | negative. */ | |
1024 | ||
1025 | /* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */ | |
1026 | HOWTO (R_PPC64_TOC16_HA, /* type */ | |
1027 | 16, /* rightshift */ | |
1028 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1029 | 16, /* bitsize */ | |
b34976b6 | 1030 | FALSE, /* pc_relative */ |
5bd4f169 | 1031 | 0, /* bitpos */ |
f9c6b907 | 1032 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 1033 | ppc64_elf_toc_ha_reloc, /* special_function */ |
5bd4f169 | 1034 | "R_PPC64_TOC16_HA", /* name */ |
b34976b6 | 1035 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1036 | 0, /* src_mask */ |
1037 | 0xffff, /* dst_mask */ | |
b34976b6 | 1038 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
1039 | |
1040 | /* 64-bit relocation; insert value of TOC base (.TOC.). */ | |
1041 | ||
1042 | /* R_PPC64_TOC 51 doubleword64 .TOC. */ | |
1043 | HOWTO (R_PPC64_TOC, /* type */ | |
1044 | 0, /* rightshift */ | |
1045 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
1046 | 64, /* bitsize */ | |
b34976b6 | 1047 | FALSE, /* pc_relative */ |
5bd4f169 | 1048 | 0, /* bitpos */ |
b80eed39 | 1049 | complain_overflow_dont, /* complain_on_overflow */ |
805fc799 | 1050 | ppc64_elf_toc64_reloc, /* special_function */ |
5bd4f169 | 1051 | "R_PPC64_TOC", /* name */ |
b34976b6 | 1052 | FALSE, /* partial_inplace */ |
5bd4f169 | 1053 | 0, /* src_mask */ |
f5e87a1d | 1054 | ONES (64), /* dst_mask */ |
b34976b6 | 1055 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
1056 | |
1057 | /* Like R_PPC64_GOT16, but also informs the link editor that the | |
1058 | value to relocate may (!) refer to a PLT entry which the link | |
1059 | editor (a) may replace with the symbol value. If the link editor | |
1060 | is unable to fully resolve the symbol, it may (b) create a PLT | |
1061 | entry and store the address to the new PLT entry in the GOT. | |
1062 | This permits lazy resolution of function symbols at run time. | |
1063 | The link editor may also skip all of this and just (c) emit a | |
1064 | R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */ | |
1065 | /* FIXME: R_PPC64_PLTGOT16 not implemented. */ | |
1066 | HOWTO (R_PPC64_PLTGOT16, /* type */ | |
1067 | 0, /* rightshift */ | |
1068 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1069 | 16, /* bitsize */ | |
b34976b6 | 1070 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1071 | 0, /* bitpos */ |
1072 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 1073 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb AM |
1074 | "R_PPC64_PLTGOT16", /* name */ |
1075 | FALSE, /* partial_inplace */ | |
1076 | 0, /* src_mask */ | |
1077 | 0xffff, /* dst_mask */ | |
1078 | FALSE), /* pcrel_offset */ | |
1079 | ||
1080 | /* Like R_PPC64_PLTGOT16, but without overflow. */ | |
1081 | /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */ | |
1082 | HOWTO (R_PPC64_PLTGOT16_LO, /* type */ | |
1083 | 0, /* rightshift */ | |
1084 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1085 | 16, /* bitsize */ | |
1086 | FALSE, /* pc_relative */ | |
1087 | 0, /* bitpos */ | |
1088 | complain_overflow_dont, /* complain_on_overflow */ | |
1089 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1090 | "R_PPC64_PLTGOT16_LO", /* name */ | |
1091 | FALSE, /* partial_inplace */ | |
1092 | 0, /* src_mask */ | |
1093 | 0xffff, /* dst_mask */ | |
1094 | FALSE), /* pcrel_offset */ | |
1095 | ||
1096 | /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */ | |
1097 | /* FIXME: R_PPC64_PLTGOT16_HI not implemented. */ | |
1098 | HOWTO (R_PPC64_PLTGOT16_HI, /* type */ | |
1099 | 16, /* rightshift */ | |
1100 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1101 | 16, /* bitsize */ | |
1102 | FALSE, /* pc_relative */ | |
1103 | 0, /* bitpos */ | |
f9c6b907 | 1104 | complain_overflow_signed, /* complain_on_overflow */ |
411e1bfb AM |
1105 | ppc64_elf_unhandled_reloc, /* special_function */ |
1106 | "R_PPC64_PLTGOT16_HI", /* name */ | |
1107 | FALSE, /* partial_inplace */ | |
1108 | 0, /* src_mask */ | |
1109 | 0xffff, /* dst_mask */ | |
1110 | FALSE), /* pcrel_offset */ | |
1111 | ||
1112 | /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus | |
1113 | 1 if the contents of the low 16 bits, treated as a signed number, | |
1114 | is negative. */ | |
1115 | /* FIXME: R_PPC64_PLTGOT16_HA not implemented. */ | |
1116 | HOWTO (R_PPC64_PLTGOT16_HA, /* type */ | |
1117 | 16, /* rightshift */ | |
1118 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1119 | 16, /* bitsize */ | |
1120 | FALSE, /* pc_relative */ | |
1121 | 0, /* bitpos */ | |
f9c6b907 | 1122 | complain_overflow_signed, /* complain_on_overflow */ |
411e1bfb AM |
1123 | ppc64_elf_unhandled_reloc, /* special_function */ |
1124 | "R_PPC64_PLTGOT16_HA", /* name */ | |
1125 | FALSE, /* partial_inplace */ | |
1126 | 0, /* src_mask */ | |
1127 | 0xffff, /* dst_mask */ | |
1128 | FALSE), /* pcrel_offset */ | |
1129 | ||
1130 | /* Like R_PPC64_ADDR16, but for instructions with a DS field. */ | |
1131 | HOWTO (R_PPC64_ADDR16_DS, /* type */ | |
1132 | 0, /* rightshift */ | |
1133 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1134 | 16, /* bitsize */ | |
1135 | FALSE, /* pc_relative */ | |
1136 | 0, /* bitpos */ | |
b80eed39 | 1137 | complain_overflow_signed, /* complain_on_overflow */ |
411e1bfb AM |
1138 | bfd_elf_generic_reloc, /* special_function */ |
1139 | "R_PPC64_ADDR16_DS", /* name */ | |
1140 | FALSE, /* partial_inplace */ | |
1141 | 0, /* src_mask */ | |
1142 | 0xfffc, /* dst_mask */ | |
1143 | FALSE), /* pcrel_offset */ | |
1144 | ||
1145 | /* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */ | |
1146 | HOWTO (R_PPC64_ADDR16_LO_DS, /* type */ | |
1147 | 0, /* rightshift */ | |
1148 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1149 | 16, /* bitsize */ | |
1150 | FALSE, /* pc_relative */ | |
1151 | 0, /* bitpos */ | |
1152 | complain_overflow_dont,/* complain_on_overflow */ | |
1153 | bfd_elf_generic_reloc, /* special_function */ | |
1154 | "R_PPC64_ADDR16_LO_DS",/* name */ | |
1155 | FALSE, /* partial_inplace */ | |
1156 | 0, /* src_mask */ | |
1157 | 0xfffc, /* dst_mask */ | |
1158 | FALSE), /* pcrel_offset */ | |
1159 | ||
1160 | /* Like R_PPC64_GOT16, but for instructions with a DS field. */ | |
1161 | HOWTO (R_PPC64_GOT16_DS, /* type */ | |
1162 | 0, /* rightshift */ | |
1163 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1164 | 16, /* bitsize */ | |
1165 | FALSE, /* pc_relative */ | |
1166 | 0, /* bitpos */ | |
1167 | complain_overflow_signed, /* complain_on_overflow */ | |
1168 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1169 | "R_PPC64_GOT16_DS", /* name */ | |
1170 | FALSE, /* partial_inplace */ | |
1171 | 0, /* src_mask */ | |
1172 | 0xfffc, /* dst_mask */ | |
1173 | FALSE), /* pcrel_offset */ | |
1174 | ||
1175 | /* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */ | |
1176 | HOWTO (R_PPC64_GOT16_LO_DS, /* type */ | |
1177 | 0, /* rightshift */ | |
1178 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1179 | 16, /* bitsize */ | |
1180 | FALSE, /* pc_relative */ | |
1181 | 0, /* bitpos */ | |
1182 | complain_overflow_dont, /* complain_on_overflow */ | |
1183 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1184 | "R_PPC64_GOT16_LO_DS", /* name */ | |
1185 | FALSE, /* partial_inplace */ | |
1186 | 0, /* src_mask */ | |
1187 | 0xfffc, /* dst_mask */ | |
1188 | FALSE), /* pcrel_offset */ | |
1189 | ||
1190 | /* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */ | |
1191 | HOWTO (R_PPC64_PLT16_LO_DS, /* type */ | |
1192 | 0, /* rightshift */ | |
1193 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1194 | 16, /* bitsize */ | |
1195 | FALSE, /* pc_relative */ | |
1196 | 0, /* bitpos */ | |
1197 | complain_overflow_dont, /* complain_on_overflow */ | |
1198 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1199 | "R_PPC64_PLT16_LO_DS", /* name */ | |
1200 | FALSE, /* partial_inplace */ | |
1201 | 0, /* src_mask */ | |
1202 | 0xfffc, /* dst_mask */ | |
1203 | FALSE), /* pcrel_offset */ | |
1204 | ||
1205 | /* Like R_PPC64_SECTOFF, but for instructions with a DS field. */ | |
1206 | HOWTO (R_PPC64_SECTOFF_DS, /* type */ | |
1207 | 0, /* rightshift */ | |
1208 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1209 | 16, /* bitsize */ | |
1210 | FALSE, /* pc_relative */ | |
1211 | 0, /* bitpos */ | |
b80eed39 | 1212 | complain_overflow_signed, /* complain_on_overflow */ |
411e1bfb AM |
1213 | ppc64_elf_sectoff_reloc, /* special_function */ |
1214 | "R_PPC64_SECTOFF_DS", /* name */ | |
1215 | FALSE, /* partial_inplace */ | |
1216 | 0, /* src_mask */ | |
1217 | 0xfffc, /* dst_mask */ | |
1218 | FALSE), /* pcrel_offset */ | |
1219 | ||
1220 | /* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */ | |
1221 | HOWTO (R_PPC64_SECTOFF_LO_DS, /* type */ | |
1222 | 0, /* rightshift */ | |
1223 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1224 | 16, /* bitsize */ | |
1225 | FALSE, /* pc_relative */ | |
1226 | 0, /* bitpos */ | |
1227 | complain_overflow_dont, /* complain_on_overflow */ | |
1228 | ppc64_elf_sectoff_reloc, /* special_function */ | |
1229 | "R_PPC64_SECTOFF_LO_DS",/* name */ | |
1230 | FALSE, /* partial_inplace */ | |
1231 | 0, /* src_mask */ | |
1232 | 0xfffc, /* dst_mask */ | |
1233 | FALSE), /* pcrel_offset */ | |
1234 | ||
1235 | /* Like R_PPC64_TOC16, but for instructions with a DS field. */ | |
1236 | HOWTO (R_PPC64_TOC16_DS, /* type */ | |
1237 | 0, /* rightshift */ | |
1238 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1239 | 16, /* bitsize */ | |
1240 | FALSE, /* pc_relative */ | |
1241 | 0, /* bitpos */ | |
1242 | complain_overflow_signed, /* complain_on_overflow */ | |
1243 | ppc64_elf_toc_reloc, /* special_function */ | |
1244 | "R_PPC64_TOC16_DS", /* name */ | |
1245 | FALSE, /* partial_inplace */ | |
1246 | 0, /* src_mask */ | |
1247 | 0xfffc, /* dst_mask */ | |
1248 | FALSE), /* pcrel_offset */ | |
1249 | ||
1250 | /* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */ | |
1251 | HOWTO (R_PPC64_TOC16_LO_DS, /* type */ | |
1252 | 0, /* rightshift */ | |
1253 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1254 | 16, /* bitsize */ | |
1255 | FALSE, /* pc_relative */ | |
1256 | 0, /* bitpos */ | |
1257 | complain_overflow_dont, /* complain_on_overflow */ | |
1258 | ppc64_elf_toc_reloc, /* special_function */ | |
1259 | "R_PPC64_TOC16_LO_DS", /* name */ | |
1260 | FALSE, /* partial_inplace */ | |
1261 | 0, /* src_mask */ | |
1262 | 0xfffc, /* dst_mask */ | |
1263 | FALSE), /* pcrel_offset */ | |
1264 | ||
1265 | /* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */ | |
1266 | /* FIXME: R_PPC64_PLTGOT16_DS not implemented. */ | |
6bfdb61b | 1267 | HOWTO (R_PPC64_PLTGOT16_DS, /* type */ |
411e1bfb AM |
1268 | 0, /* rightshift */ |
1269 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1270 | 16, /* bitsize */ | |
1271 | FALSE, /* pc_relative */ | |
1272 | 0, /* bitpos */ | |
1273 | complain_overflow_signed, /* complain_on_overflow */ | |
1274 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1275 | "R_PPC64_PLTGOT16_DS", /* name */ | |
1276 | FALSE, /* partial_inplace */ | |
1277 | 0, /* src_mask */ | |
1278 | 0xfffc, /* dst_mask */ | |
1279 | FALSE), /* pcrel_offset */ | |
1280 | ||
1281 | /* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */ | |
1282 | /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */ | |
1283 | HOWTO (R_PPC64_PLTGOT16_LO_DS,/* type */ | |
1284 | 0, /* rightshift */ | |
1285 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1286 | 16, /* bitsize */ | |
1287 | FALSE, /* pc_relative */ | |
1288 | 0, /* bitpos */ | |
1289 | complain_overflow_dont, /* complain_on_overflow */ | |
1290 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1291 | "R_PPC64_PLTGOT16_LO_DS",/* name */ | |
1292 | FALSE, /* partial_inplace */ | |
1293 | 0, /* src_mask */ | |
1294 | 0xfffc, /* dst_mask */ | |
1295 | FALSE), /* pcrel_offset */ | |
1296 | ||
727fc41e | 1297 | /* Marker relocs for TLS. */ |
411e1bfb AM |
1298 | HOWTO (R_PPC64_TLS, |
1299 | 0, /* rightshift */ | |
1300 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1301 | 32, /* bitsize */ | |
1302 | FALSE, /* pc_relative */ | |
1303 | 0, /* bitpos */ | |
1304 | complain_overflow_dont, /* complain_on_overflow */ | |
1305 | bfd_elf_generic_reloc, /* special_function */ | |
1306 | "R_PPC64_TLS", /* name */ | |
1307 | FALSE, /* partial_inplace */ | |
1308 | 0, /* src_mask */ | |
1309 | 0, /* dst_mask */ | |
1310 | FALSE), /* pcrel_offset */ | |
1311 | ||
727fc41e AM |
1312 | HOWTO (R_PPC64_TLSGD, |
1313 | 0, /* rightshift */ | |
1314 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1315 | 32, /* bitsize */ | |
1316 | FALSE, /* pc_relative */ | |
1317 | 0, /* bitpos */ | |
1318 | complain_overflow_dont, /* complain_on_overflow */ | |
1319 | bfd_elf_generic_reloc, /* special_function */ | |
1320 | "R_PPC64_TLSGD", /* name */ | |
1321 | FALSE, /* partial_inplace */ | |
1322 | 0, /* src_mask */ | |
1323 | 0, /* dst_mask */ | |
1324 | FALSE), /* pcrel_offset */ | |
1325 | ||
1326 | HOWTO (R_PPC64_TLSLD, | |
1327 | 0, /* rightshift */ | |
1328 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1329 | 32, /* bitsize */ | |
1330 | FALSE, /* pc_relative */ | |
1331 | 0, /* bitpos */ | |
1332 | complain_overflow_dont, /* complain_on_overflow */ | |
1333 | bfd_elf_generic_reloc, /* special_function */ | |
1334 | "R_PPC64_TLSLD", /* name */ | |
1335 | FALSE, /* partial_inplace */ | |
1336 | 0, /* src_mask */ | |
1337 | 0, /* dst_mask */ | |
1338 | FALSE), /* pcrel_offset */ | |
1339 | ||
23cedd1d AM |
1340 | /* Marker reloc for optimizing r2 save in prologue rather than on |
1341 | each plt call stub. */ | |
3b421ab3 AM |
1342 | HOWTO (R_PPC64_TOCSAVE, |
1343 | 0, /* rightshift */ | |
1344 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1345 | 32, /* bitsize */ | |
1346 | FALSE, /* pc_relative */ | |
1347 | 0, /* bitpos */ | |
1348 | complain_overflow_dont, /* complain_on_overflow */ | |
1349 | bfd_elf_generic_reloc, /* special_function */ | |
1350 | "R_PPC64_TOCSAVE", /* name */ | |
1351 | FALSE, /* partial_inplace */ | |
1352 | 0, /* src_mask */ | |
1353 | 0, /* dst_mask */ | |
1354 | FALSE), /* pcrel_offset */ | |
1355 | ||
23cedd1d AM |
1356 | /* Marker relocs on inline plt call instructions. */ |
1357 | HOWTO (R_PPC64_PLTSEQ, | |
1358 | 0, /* rightshift */ | |
1359 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1360 | 32, /* bitsize */ | |
1361 | FALSE, /* pc_relative */ | |
1362 | 0, /* bitpos */ | |
1363 | complain_overflow_dont, /* complain_on_overflow */ | |
1364 | bfd_elf_generic_reloc, /* special_function */ | |
1365 | "R_PPC64_PLTSEQ", /* name */ | |
1366 | FALSE, /* partial_inplace */ | |
1367 | 0, /* src_mask */ | |
1368 | 0, /* dst_mask */ | |
1369 | FALSE), /* pcrel_offset */ | |
1370 | ||
1371 | HOWTO (R_PPC64_PLTCALL, | |
1372 | 0, /* rightshift */ | |
1373 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1374 | 32, /* bitsize */ | |
1375 | FALSE, /* pc_relative */ | |
1376 | 0, /* bitpos */ | |
1377 | complain_overflow_dont, /* complain_on_overflow */ | |
1378 | bfd_elf_generic_reloc, /* special_function */ | |
1379 | "R_PPC64_PLTCALL", /* name */ | |
1380 | FALSE, /* partial_inplace */ | |
1381 | 0, /* src_mask */ | |
1382 | 0, /* dst_mask */ | |
1383 | FALSE), /* pcrel_offset */ | |
1384 | ||
411e1bfb AM |
1385 | /* Computes the load module index of the load module that contains the |
1386 | definition of its TLS sym. */ | |
1387 | HOWTO (R_PPC64_DTPMOD64, | |
1388 | 0, /* rightshift */ | |
1389 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
1390 | 64, /* bitsize */ | |
1391 | FALSE, /* pc_relative */ | |
1392 | 0, /* bitpos */ | |
1393 | complain_overflow_dont, /* complain_on_overflow */ | |
1394 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1395 | "R_PPC64_DTPMOD64", /* name */ | |
1396 | FALSE, /* partial_inplace */ | |
1397 | 0, /* src_mask */ | |
1398 | ONES (64), /* dst_mask */ | |
1399 | FALSE), /* pcrel_offset */ | |
1400 | ||
1401 | /* Computes a dtv-relative displacement, the difference between the value | |
1402 | of sym+add and the base address of the thread-local storage block that | |
1403 | contains the definition of sym, minus 0x8000. */ | |
1404 | HOWTO (R_PPC64_DTPREL64, | |
1405 | 0, /* rightshift */ | |
1406 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
1407 | 64, /* bitsize */ | |
1408 | FALSE, /* pc_relative */ | |
1409 | 0, /* bitpos */ | |
1410 | complain_overflow_dont, /* complain_on_overflow */ | |
1411 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1412 | "R_PPC64_DTPREL64", /* name */ | |
1413 | FALSE, /* partial_inplace */ | |
1414 | 0, /* src_mask */ | |
1415 | ONES (64), /* dst_mask */ | |
1416 | FALSE), /* pcrel_offset */ | |
1417 | ||
1418 | /* A 16 bit dtprel reloc. */ | |
1419 | HOWTO (R_PPC64_DTPREL16, | |
1420 | 0, /* rightshift */ | |
1421 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1422 | 16, /* bitsize */ | |
1423 | FALSE, /* pc_relative */ | |
1424 | 0, /* bitpos */ | |
1425 | complain_overflow_signed, /* complain_on_overflow */ | |
1426 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1427 | "R_PPC64_DTPREL16", /* name */ | |
1428 | FALSE, /* partial_inplace */ | |
1429 | 0, /* src_mask */ | |
1430 | 0xffff, /* dst_mask */ | |
1431 | FALSE), /* pcrel_offset */ | |
1432 | ||
1433 | /* Like DTPREL16, but no overflow. */ | |
1434 | HOWTO (R_PPC64_DTPREL16_LO, | |
1435 | 0, /* rightshift */ | |
1436 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1437 | 16, /* bitsize */ | |
1438 | FALSE, /* pc_relative */ | |
1439 | 0, /* bitpos */ | |
1440 | complain_overflow_dont, /* complain_on_overflow */ | |
1441 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1442 | "R_PPC64_DTPREL16_LO", /* name */ | |
1443 | FALSE, /* partial_inplace */ | |
1444 | 0, /* src_mask */ | |
1445 | 0xffff, /* dst_mask */ | |
1446 | FALSE), /* pcrel_offset */ | |
1447 | ||
1448 | /* Like DTPREL16_LO, but next higher group of 16 bits. */ | |
1449 | HOWTO (R_PPC64_DTPREL16_HI, | |
1450 | 16, /* rightshift */ | |
1451 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1452 | 16, /* bitsize */ | |
1453 | FALSE, /* pc_relative */ | |
1454 | 0, /* bitpos */ | |
f9c6b907 | 1455 | complain_overflow_signed, /* complain_on_overflow */ |
411e1bfb AM |
1456 | ppc64_elf_unhandled_reloc, /* special_function */ |
1457 | "R_PPC64_DTPREL16_HI", /* name */ | |
1458 | FALSE, /* partial_inplace */ | |
1459 | 0, /* src_mask */ | |
1460 | 0xffff, /* dst_mask */ | |
1461 | FALSE), /* pcrel_offset */ | |
1462 | ||
1463 | /* Like DTPREL16_HI, but adjust for low 16 bits. */ | |
1464 | HOWTO (R_PPC64_DTPREL16_HA, | |
1465 | 16, /* rightshift */ | |
1466 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1467 | 16, /* bitsize */ | |
1468 | FALSE, /* pc_relative */ | |
1469 | 0, /* bitpos */ | |
f9c6b907 | 1470 | complain_overflow_signed, /* complain_on_overflow */ |
411e1bfb AM |
1471 | ppc64_elf_unhandled_reloc, /* special_function */ |
1472 | "R_PPC64_DTPREL16_HA", /* name */ | |
1473 | FALSE, /* partial_inplace */ | |
1474 | 0, /* src_mask */ | |
1475 | 0xffff, /* dst_mask */ | |
1476 | FALSE), /* pcrel_offset */ | |
1477 | ||
1478 | /* Like DTPREL16_HI, but next higher group of 16 bits. */ | |
1479 | HOWTO (R_PPC64_DTPREL16_HIGHER, | |
1480 | 32, /* rightshift */ | |
1481 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1482 | 16, /* bitsize */ | |
1483 | FALSE, /* pc_relative */ | |
1484 | 0, /* bitpos */ | |
1485 | complain_overflow_dont, /* complain_on_overflow */ | |
1486 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1487 | "R_PPC64_DTPREL16_HIGHER", /* name */ | |
1488 | FALSE, /* partial_inplace */ | |
1489 | 0, /* src_mask */ | |
1490 | 0xffff, /* dst_mask */ | |
1491 | FALSE), /* pcrel_offset */ | |
1492 | ||
1493 | /* Like DTPREL16_HIGHER, but adjust for low 16 bits. */ | |
1494 | HOWTO (R_PPC64_DTPREL16_HIGHERA, | |
1495 | 32, /* rightshift */ | |
1496 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1497 | 16, /* bitsize */ | |
1498 | FALSE, /* pc_relative */ | |
1499 | 0, /* bitpos */ | |
1500 | complain_overflow_dont, /* complain_on_overflow */ | |
1501 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1502 | "R_PPC64_DTPREL16_HIGHERA", /* name */ | |
1503 | FALSE, /* partial_inplace */ | |
1504 | 0, /* src_mask */ | |
1505 | 0xffff, /* dst_mask */ | |
1506 | FALSE), /* pcrel_offset */ | |
1507 | ||
1508 | /* Like DTPREL16_HIGHER, but next higher group of 16 bits. */ | |
1509 | HOWTO (R_PPC64_DTPREL16_HIGHEST, | |
1510 | 48, /* rightshift */ | |
1511 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1512 | 16, /* bitsize */ | |
1513 | FALSE, /* pc_relative */ | |
1514 | 0, /* bitpos */ | |
1515 | complain_overflow_dont, /* complain_on_overflow */ | |
1516 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1517 | "R_PPC64_DTPREL16_HIGHEST", /* name */ | |
1518 | FALSE, /* partial_inplace */ | |
1519 | 0, /* src_mask */ | |
1520 | 0xffff, /* dst_mask */ | |
1521 | FALSE), /* pcrel_offset */ | |
1522 | ||
1523 | /* Like DTPREL16_HIGHEST, but adjust for low 16 bits. */ | |
1524 | HOWTO (R_PPC64_DTPREL16_HIGHESTA, | |
1525 | 48, /* rightshift */ | |
1526 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1527 | 16, /* bitsize */ | |
1528 | FALSE, /* pc_relative */ | |
1529 | 0, /* bitpos */ | |
1530 | complain_overflow_dont, /* complain_on_overflow */ | |
1531 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1532 | "R_PPC64_DTPREL16_HIGHESTA", /* name */ | |
1533 | FALSE, /* partial_inplace */ | |
1534 | 0, /* src_mask */ | |
1535 | 0xffff, /* dst_mask */ | |
1536 | FALSE), /* pcrel_offset */ | |
1537 | ||
1538 | /* Like DTPREL16, but for insns with a DS field. */ | |
1539 | HOWTO (R_PPC64_DTPREL16_DS, | |
1540 | 0, /* rightshift */ | |
1541 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1542 | 16, /* bitsize */ | |
1543 | FALSE, /* pc_relative */ | |
1544 | 0, /* bitpos */ | |
1545 | complain_overflow_signed, /* complain_on_overflow */ | |
1546 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1547 | "R_PPC64_DTPREL16_DS", /* name */ | |
1548 | FALSE, /* partial_inplace */ | |
1549 | 0, /* src_mask */ | |
1550 | 0xfffc, /* dst_mask */ | |
1551 | FALSE), /* pcrel_offset */ | |
1552 | ||
1553 | /* Like DTPREL16_DS, but no overflow. */ | |
1554 | HOWTO (R_PPC64_DTPREL16_LO_DS, | |
1555 | 0, /* rightshift */ | |
1556 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1557 | 16, /* bitsize */ | |
1558 | FALSE, /* pc_relative */ | |
1559 | 0, /* bitpos */ | |
1560 | complain_overflow_dont, /* complain_on_overflow */ | |
1561 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1562 | "R_PPC64_DTPREL16_LO_DS", /* name */ | |
1563 | FALSE, /* partial_inplace */ | |
1564 | 0, /* src_mask */ | |
1565 | 0xfffc, /* dst_mask */ | |
1566 | FALSE), /* pcrel_offset */ | |
1567 | ||
1568 | /* Computes a tp-relative displacement, the difference between the value of | |
1569 | sym+add and the value of the thread pointer (r13). */ | |
1570 | HOWTO (R_PPC64_TPREL64, | |
1571 | 0, /* rightshift */ | |
1572 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
1573 | 64, /* bitsize */ | |
1574 | FALSE, /* pc_relative */ | |
1575 | 0, /* bitpos */ | |
1576 | complain_overflow_dont, /* complain_on_overflow */ | |
1577 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1578 | "R_PPC64_TPREL64", /* name */ | |
1579 | FALSE, /* partial_inplace */ | |
1580 | 0, /* src_mask */ | |
1581 | ONES (64), /* dst_mask */ | |
1582 | FALSE), /* pcrel_offset */ | |
1583 | ||
1584 | /* A 16 bit tprel reloc. */ | |
1585 | HOWTO (R_PPC64_TPREL16, | |
1586 | 0, /* rightshift */ | |
1587 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1588 | 16, /* bitsize */ | |
1589 | FALSE, /* pc_relative */ | |
1590 | 0, /* bitpos */ | |
1591 | complain_overflow_signed, /* complain_on_overflow */ | |
1592 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1593 | "R_PPC64_TPREL16", /* name */ | |
1594 | FALSE, /* partial_inplace */ | |
1595 | 0, /* src_mask */ | |
1596 | 0xffff, /* dst_mask */ | |
1597 | FALSE), /* pcrel_offset */ | |
1598 | ||
1599 | /* Like TPREL16, but no overflow. */ | |
1600 | HOWTO (R_PPC64_TPREL16_LO, | |
1601 | 0, /* rightshift */ | |
1602 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1603 | 16, /* bitsize */ | |
1604 | FALSE, /* pc_relative */ | |
1605 | 0, /* bitpos */ | |
1606 | complain_overflow_dont, /* complain_on_overflow */ | |
1607 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1608 | "R_PPC64_TPREL16_LO", /* name */ | |
1609 | FALSE, /* partial_inplace */ | |
1610 | 0, /* src_mask */ | |
1611 | 0xffff, /* dst_mask */ | |
1612 | FALSE), /* pcrel_offset */ | |
1613 | ||
1614 | /* Like TPREL16_LO, but next higher group of 16 bits. */ | |
1615 | HOWTO (R_PPC64_TPREL16_HI, | |
1616 | 16, /* rightshift */ | |
1617 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1618 | 16, /* bitsize */ | |
1619 | FALSE, /* pc_relative */ | |
1620 | 0, /* bitpos */ | |
f9c6b907 | 1621 | complain_overflow_signed, /* complain_on_overflow */ |
411e1bfb AM |
1622 | ppc64_elf_unhandled_reloc, /* special_function */ |
1623 | "R_PPC64_TPREL16_HI", /* name */ | |
1624 | FALSE, /* partial_inplace */ | |
1625 | 0, /* src_mask */ | |
1626 | 0xffff, /* dst_mask */ | |
1627 | FALSE), /* pcrel_offset */ | |
1628 | ||
1629 | /* Like TPREL16_HI, but adjust for low 16 bits. */ | |
1630 | HOWTO (R_PPC64_TPREL16_HA, | |
1631 | 16, /* rightshift */ | |
1632 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1633 | 16, /* bitsize */ | |
1634 | FALSE, /* pc_relative */ | |
1635 | 0, /* bitpos */ | |
f9c6b907 | 1636 | complain_overflow_signed, /* complain_on_overflow */ |
411e1bfb AM |
1637 | ppc64_elf_unhandled_reloc, /* special_function */ |
1638 | "R_PPC64_TPREL16_HA", /* name */ | |
1639 | FALSE, /* partial_inplace */ | |
1640 | 0, /* src_mask */ | |
1641 | 0xffff, /* dst_mask */ | |
1642 | FALSE), /* pcrel_offset */ | |
1643 | ||
1644 | /* Like TPREL16_HI, but next higher group of 16 bits. */ | |
1645 | HOWTO (R_PPC64_TPREL16_HIGHER, | |
1646 | 32, /* rightshift */ | |
1647 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1648 | 16, /* bitsize */ | |
1649 | FALSE, /* pc_relative */ | |
1650 | 0, /* bitpos */ | |
1651 | complain_overflow_dont, /* complain_on_overflow */ | |
1652 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1653 | "R_PPC64_TPREL16_HIGHER", /* name */ | |
1654 | FALSE, /* partial_inplace */ | |
1655 | 0, /* src_mask */ | |
1656 | 0xffff, /* dst_mask */ | |
1657 | FALSE), /* pcrel_offset */ | |
1658 | ||
1659 | /* Like TPREL16_HIGHER, but adjust for low 16 bits. */ | |
1660 | HOWTO (R_PPC64_TPREL16_HIGHERA, | |
1661 | 32, /* rightshift */ | |
1662 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1663 | 16, /* bitsize */ | |
1664 | FALSE, /* pc_relative */ | |
1665 | 0, /* bitpos */ | |
1666 | complain_overflow_dont, /* complain_on_overflow */ | |
1667 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1668 | "R_PPC64_TPREL16_HIGHERA", /* name */ | |
1669 | FALSE, /* partial_inplace */ | |
1670 | 0, /* src_mask */ | |
1671 | 0xffff, /* dst_mask */ | |
1672 | FALSE), /* pcrel_offset */ | |
1673 | ||
1674 | /* Like TPREL16_HIGHER, but next higher group of 16 bits. */ | |
1675 | HOWTO (R_PPC64_TPREL16_HIGHEST, | |
1676 | 48, /* rightshift */ | |
1677 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1678 | 16, /* bitsize */ | |
1679 | FALSE, /* pc_relative */ | |
1680 | 0, /* bitpos */ | |
1681 | complain_overflow_dont, /* complain_on_overflow */ | |
1682 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1683 | "R_PPC64_TPREL16_HIGHEST", /* name */ | |
1684 | FALSE, /* partial_inplace */ | |
1685 | 0, /* src_mask */ | |
1686 | 0xffff, /* dst_mask */ | |
1687 | FALSE), /* pcrel_offset */ | |
1688 | ||
1689 | /* Like TPREL16_HIGHEST, but adjust for low 16 bits. */ | |
1690 | HOWTO (R_PPC64_TPREL16_HIGHESTA, | |
1691 | 48, /* rightshift */ | |
1692 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1693 | 16, /* bitsize */ | |
1694 | FALSE, /* pc_relative */ | |
1695 | 0, /* bitpos */ | |
1696 | complain_overflow_dont, /* complain_on_overflow */ | |
1697 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1698 | "R_PPC64_TPREL16_HIGHESTA", /* name */ | |
1699 | FALSE, /* partial_inplace */ | |
1700 | 0, /* src_mask */ | |
1701 | 0xffff, /* dst_mask */ | |
1702 | FALSE), /* pcrel_offset */ | |
1703 | ||
1704 | /* Like TPREL16, but for insns with a DS field. */ | |
1705 | HOWTO (R_PPC64_TPREL16_DS, | |
1706 | 0, /* rightshift */ | |
1707 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1708 | 16, /* bitsize */ | |
1709 | FALSE, /* pc_relative */ | |
1710 | 0, /* bitpos */ | |
1711 | complain_overflow_signed, /* complain_on_overflow */ | |
1712 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1713 | "R_PPC64_TPREL16_DS", /* name */ | |
1714 | FALSE, /* partial_inplace */ | |
1715 | 0, /* src_mask */ | |
1716 | 0xfffc, /* dst_mask */ | |
1717 | FALSE), /* pcrel_offset */ | |
1718 | ||
1719 | /* Like TPREL16_DS, but no overflow. */ | |
1720 | HOWTO (R_PPC64_TPREL16_LO_DS, | |
1721 | 0, /* rightshift */ | |
1722 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1723 | 16, /* bitsize */ | |
1724 | FALSE, /* pc_relative */ | |
1725 | 0, /* bitpos */ | |
1726 | complain_overflow_dont, /* complain_on_overflow */ | |
1727 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1728 | "R_PPC64_TPREL16_LO_DS", /* name */ | |
1729 | FALSE, /* partial_inplace */ | |
1730 | 0, /* src_mask */ | |
1731 | 0xfffc, /* dst_mask */ | |
1732 | FALSE), /* pcrel_offset */ | |
1733 | ||
1734 | /* Allocates two contiguous entries in the GOT to hold a tls_index structure, | |
1735 | with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset | |
1736 | to the first entry relative to the TOC base (r2). */ | |
1737 | HOWTO (R_PPC64_GOT_TLSGD16, | |
1738 | 0, /* rightshift */ | |
1739 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1740 | 16, /* bitsize */ | |
1741 | FALSE, /* pc_relative */ | |
1742 | 0, /* bitpos */ | |
1743 | complain_overflow_signed, /* complain_on_overflow */ | |
1744 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1745 | "R_PPC64_GOT_TLSGD16", /* name */ | |
b34976b6 | 1746 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1747 | 0, /* src_mask */ |
1748 | 0xffff, /* dst_mask */ | |
b34976b6 | 1749 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1750 | |
411e1bfb AM |
1751 | /* Like GOT_TLSGD16, but no overflow. */ |
1752 | HOWTO (R_PPC64_GOT_TLSGD16_LO, | |
5bd4f169 AM |
1753 | 0, /* rightshift */ |
1754 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1755 | 16, /* bitsize */ | |
b34976b6 | 1756 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1757 | 0, /* bitpos */ |
1758 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 1759 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1760 | "R_PPC64_GOT_TLSGD16_LO", /* name */ |
b34976b6 | 1761 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1762 | 0, /* src_mask */ |
1763 | 0xffff, /* dst_mask */ | |
b34976b6 | 1764 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1765 | |
411e1bfb AM |
1766 | /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */ |
1767 | HOWTO (R_PPC64_GOT_TLSGD16_HI, | |
5bd4f169 AM |
1768 | 16, /* rightshift */ |
1769 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1770 | 16, /* bitsize */ | |
b34976b6 | 1771 | FALSE, /* pc_relative */ |
5bd4f169 | 1772 | 0, /* bitpos */ |
f9c6b907 | 1773 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 1774 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1775 | "R_PPC64_GOT_TLSGD16_HI", /* name */ |
b34976b6 | 1776 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1777 | 0, /* src_mask */ |
1778 | 0xffff, /* dst_mask */ | |
b34976b6 | 1779 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1780 | |
411e1bfb AM |
1781 | /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */ |
1782 | HOWTO (R_PPC64_GOT_TLSGD16_HA, | |
5bd4f169 AM |
1783 | 16, /* rightshift */ |
1784 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1785 | 16, /* bitsize */ | |
b34976b6 | 1786 | FALSE, /* pc_relative */ |
5bd4f169 | 1787 | 0, /* bitpos */ |
f9c6b907 | 1788 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 1789 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1790 | "R_PPC64_GOT_TLSGD16_HA", /* name */ |
b34976b6 | 1791 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1792 | 0, /* src_mask */ |
1793 | 0xffff, /* dst_mask */ | |
b34976b6 | 1794 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1795 | |
411e1bfb AM |
1796 | /* Allocates two contiguous entries in the GOT to hold a tls_index structure, |
1797 | with values (sym+add)@dtpmod and zero, and computes the offset to the | |
1798 | first entry relative to the TOC base (r2). */ | |
1799 | HOWTO (R_PPC64_GOT_TLSLD16, | |
5bd4f169 AM |
1800 | 0, /* rightshift */ |
1801 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1802 | 16, /* bitsize */ | |
b34976b6 | 1803 | FALSE, /* pc_relative */ |
5bd4f169 | 1804 | 0, /* bitpos */ |
411e1bfb AM |
1805 | complain_overflow_signed, /* complain_on_overflow */ |
1806 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1807 | "R_PPC64_GOT_TLSLD16", /* name */ | |
b34976b6 | 1808 | FALSE, /* partial_inplace */ |
d006db6c | 1809 | 0, /* src_mask */ |
411e1bfb | 1810 | 0xffff, /* dst_mask */ |
b34976b6 | 1811 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1812 | |
411e1bfb AM |
1813 | /* Like GOT_TLSLD16, but no overflow. */ |
1814 | HOWTO (R_PPC64_GOT_TLSLD16_LO, | |
5bd4f169 AM |
1815 | 0, /* rightshift */ |
1816 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1817 | 16, /* bitsize */ | |
b34976b6 | 1818 | FALSE, /* pc_relative */ |
5bd4f169 | 1819 | 0, /* bitpos */ |
411e1bfb AM |
1820 | complain_overflow_dont, /* complain_on_overflow */ |
1821 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1822 | "R_PPC64_GOT_TLSLD16_LO", /* name */ | |
b34976b6 | 1823 | FALSE, /* partial_inplace */ |
d006db6c | 1824 | 0, /* src_mask */ |
411e1bfb | 1825 | 0xffff, /* dst_mask */ |
b34976b6 | 1826 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1827 | |
411e1bfb AM |
1828 | /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */ |
1829 | HOWTO (R_PPC64_GOT_TLSLD16_HI, | |
1830 | 16, /* rightshift */ | |
5bd4f169 AM |
1831 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1832 | 16, /* bitsize */ | |
b34976b6 | 1833 | FALSE, /* pc_relative */ |
5bd4f169 | 1834 | 0, /* bitpos */ |
f9c6b907 | 1835 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 1836 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1837 | "R_PPC64_GOT_TLSLD16_HI", /* name */ |
b34976b6 | 1838 | FALSE, /* partial_inplace */ |
d006db6c | 1839 | 0, /* src_mask */ |
411e1bfb | 1840 | 0xffff, /* dst_mask */ |
b34976b6 | 1841 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1842 | |
411e1bfb AM |
1843 | /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */ |
1844 | HOWTO (R_PPC64_GOT_TLSLD16_HA, | |
1845 | 16, /* rightshift */ | |
5bd4f169 AM |
1846 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1847 | 16, /* bitsize */ | |
b34976b6 | 1848 | FALSE, /* pc_relative */ |
5bd4f169 | 1849 | 0, /* bitpos */ |
f9c6b907 | 1850 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 1851 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1852 | "R_PPC64_GOT_TLSLD16_HA", /* name */ |
b34976b6 | 1853 | FALSE, /* partial_inplace */ |
d006db6c | 1854 | 0, /* src_mask */ |
411e1bfb | 1855 | 0xffff, /* dst_mask */ |
b34976b6 | 1856 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1857 | |
411e1bfb AM |
1858 | /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes |
1859 | the offset to the entry relative to the TOC base (r2). */ | |
1860 | HOWTO (R_PPC64_GOT_DTPREL16_DS, | |
5bd4f169 AM |
1861 | 0, /* rightshift */ |
1862 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1863 | 16, /* bitsize */ | |
b34976b6 | 1864 | FALSE, /* pc_relative */ |
5bd4f169 | 1865 | 0, /* bitpos */ |
411e1bfb | 1866 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 1867 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1868 | "R_PPC64_GOT_DTPREL16_DS", /* name */ |
b34976b6 | 1869 | FALSE, /* partial_inplace */ |
d006db6c | 1870 | 0, /* src_mask */ |
5bd4f169 | 1871 | 0xfffc, /* dst_mask */ |
b34976b6 | 1872 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1873 | |
411e1bfb AM |
1874 | /* Like GOT_DTPREL16_DS, but no overflow. */ |
1875 | HOWTO (R_PPC64_GOT_DTPREL16_LO_DS, | |
5bd4f169 | 1876 | 0, /* rightshift */ |
c061c2d8 AM |
1877 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1878 | 16, /* bitsize */ | |
b34976b6 | 1879 | FALSE, /* pc_relative */ |
5bd4f169 | 1880 | 0, /* bitpos */ |
411e1bfb AM |
1881 | complain_overflow_dont, /* complain_on_overflow */ |
1882 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1883 | "R_PPC64_GOT_DTPREL16_LO_DS", /* name */ | |
b34976b6 | 1884 | FALSE, /* partial_inplace */ |
d006db6c | 1885 | 0, /* src_mask */ |
c061c2d8 | 1886 | 0xfffc, /* dst_mask */ |
b34976b6 | 1887 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1888 | |
411e1bfb AM |
1889 | /* Like GOT_DTPREL16_LO_DS, but next higher group of 16 bits. */ |
1890 | HOWTO (R_PPC64_GOT_DTPREL16_HI, | |
1891 | 16, /* rightshift */ | |
5bd4f169 AM |
1892 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1893 | 16, /* bitsize */ | |
b34976b6 | 1894 | FALSE, /* pc_relative */ |
5bd4f169 | 1895 | 0, /* bitpos */ |
f9c6b907 | 1896 | complain_overflow_signed, /* complain_on_overflow */ |
411e1bfb AM |
1897 | ppc64_elf_unhandled_reloc, /* special_function */ |
1898 | "R_PPC64_GOT_DTPREL16_HI", /* name */ | |
b34976b6 | 1899 | FALSE, /* partial_inplace */ |
d006db6c | 1900 | 0, /* src_mask */ |
411e1bfb | 1901 | 0xffff, /* dst_mask */ |
b34976b6 | 1902 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1903 | |
411e1bfb AM |
1904 | /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */ |
1905 | HOWTO (R_PPC64_GOT_DTPREL16_HA, | |
1906 | 16, /* rightshift */ | |
1907 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1908 | 16, /* bitsize */ | |
1909 | FALSE, /* pc_relative */ | |
1910 | 0, /* bitpos */ | |
f9c6b907 | 1911 | complain_overflow_signed, /* complain_on_overflow */ |
411e1bfb AM |
1912 | ppc64_elf_unhandled_reloc, /* special_function */ |
1913 | "R_PPC64_GOT_DTPREL16_HA", /* name */ | |
1914 | FALSE, /* partial_inplace */ | |
1915 | 0, /* src_mask */ | |
1916 | 0xffff, /* dst_mask */ | |
1917 | FALSE), /* pcrel_offset */ | |
1918 | ||
1919 | /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the | |
1920 | offset to the entry relative to the TOC base (r2). */ | |
1921 | HOWTO (R_PPC64_GOT_TPREL16_DS, | |
5bd4f169 AM |
1922 | 0, /* rightshift */ |
1923 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1924 | 16, /* bitsize */ | |
b34976b6 | 1925 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1926 | 0, /* bitpos */ |
1927 | complain_overflow_signed, /* complain_on_overflow */ | |
411e1bfb AM |
1928 | ppc64_elf_unhandled_reloc, /* special_function */ |
1929 | "R_PPC64_GOT_TPREL16_DS", /* name */ | |
b34976b6 | 1930 | FALSE, /* partial_inplace */ |
d006db6c | 1931 | 0, /* src_mask */ |
ad8e1ba5 | 1932 | 0xfffc, /* dst_mask */ |
b34976b6 | 1933 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1934 | |
411e1bfb AM |
1935 | /* Like GOT_TPREL16_DS, but no overflow. */ |
1936 | HOWTO (R_PPC64_GOT_TPREL16_LO_DS, | |
5bd4f169 AM |
1937 | 0, /* rightshift */ |
1938 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1939 | 16, /* bitsize */ | |
b34976b6 | 1940 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1941 | 0, /* bitpos */ |
1942 | complain_overflow_dont, /* complain_on_overflow */ | |
411e1bfb AM |
1943 | ppc64_elf_unhandled_reloc, /* special_function */ |
1944 | "R_PPC64_GOT_TPREL16_LO_DS", /* name */ | |
b34976b6 | 1945 | FALSE, /* partial_inplace */ |
d006db6c | 1946 | 0, /* src_mask */ |
ad8e1ba5 | 1947 | 0xfffc, /* dst_mask */ |
b34976b6 | 1948 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1949 | |
411e1bfb AM |
1950 | /* Like GOT_TPREL16_LO_DS, but next higher group of 16 bits. */ |
1951 | HOWTO (R_PPC64_GOT_TPREL16_HI, | |
1952 | 16, /* rightshift */ | |
5bd4f169 AM |
1953 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1954 | 16, /* bitsize */ | |
b34976b6 | 1955 | FALSE, /* pc_relative */ |
5bd4f169 | 1956 | 0, /* bitpos */ |
f9c6b907 | 1957 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 1958 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1959 | "R_PPC64_GOT_TPREL16_HI", /* name */ |
b34976b6 | 1960 | FALSE, /* partial_inplace */ |
d006db6c | 1961 | 0, /* src_mask */ |
411e1bfb | 1962 | 0xffff, /* dst_mask */ |
b34976b6 | 1963 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1964 | |
411e1bfb AM |
1965 | /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */ |
1966 | HOWTO (R_PPC64_GOT_TPREL16_HA, | |
1967 | 16, /* rightshift */ | |
5bd4f169 AM |
1968 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1969 | 16, /* bitsize */ | |
b34976b6 | 1970 | FALSE, /* pc_relative */ |
5bd4f169 | 1971 | 0, /* bitpos */ |
f9c6b907 | 1972 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 1973 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1974 | "R_PPC64_GOT_TPREL16_HA", /* name */ |
b34976b6 | 1975 | FALSE, /* partial_inplace */ |
d006db6c | 1976 | 0, /* src_mask */ |
411e1bfb | 1977 | 0xffff, /* dst_mask */ |
b34976b6 | 1978 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1979 | |
25f23106 AM |
1980 | HOWTO (R_PPC64_JMP_IREL, /* type */ |
1981 | 0, /* rightshift */ | |
1982 | 0, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
1983 | 0, /* bitsize */ | |
1984 | FALSE, /* pc_relative */ | |
1985 | 0, /* bitpos */ | |
1986 | complain_overflow_dont, /* complain_on_overflow */ | |
1987 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1988 | "R_PPC64_JMP_IREL", /* name */ | |
1989 | FALSE, /* partial_inplace */ | |
1990 | 0, /* src_mask */ | |
1991 | 0, /* dst_mask */ | |
1992 | FALSE), /* pcrel_offset */ | |
1993 | ||
e054468f AM |
1994 | HOWTO (R_PPC64_IRELATIVE, /* type */ |
1995 | 0, /* rightshift */ | |
1996 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
1997 | 64, /* bitsize */ | |
1998 | FALSE, /* pc_relative */ | |
1999 | 0, /* bitpos */ | |
2000 | complain_overflow_dont, /* complain_on_overflow */ | |
2001 | bfd_elf_generic_reloc, /* special_function */ | |
2002 | "R_PPC64_IRELATIVE", /* name */ | |
2003 | FALSE, /* partial_inplace */ | |
2004 | 0, /* src_mask */ | |
2005 | ONES (64), /* dst_mask */ | |
2006 | FALSE), /* pcrel_offset */ | |
2007 | ||
25f23106 AM |
2008 | /* A 16 bit relative relocation. */ |
2009 | HOWTO (R_PPC64_REL16, /* type */ | |
2010 | 0, /* rightshift */ | |
2011 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
2012 | 16, /* bitsize */ | |
2013 | TRUE, /* pc_relative */ | |
2014 | 0, /* bitpos */ | |
b80eed39 | 2015 | complain_overflow_signed, /* complain_on_overflow */ |
25f23106 AM |
2016 | bfd_elf_generic_reloc, /* special_function */ |
2017 | "R_PPC64_REL16", /* name */ | |
2018 | FALSE, /* partial_inplace */ | |
2019 | 0, /* src_mask */ | |
2020 | 0xffff, /* dst_mask */ | |
2021 | TRUE), /* pcrel_offset */ | |
2022 | ||
2023 | /* A 16 bit relative relocation without overflow. */ | |
2024 | HOWTO (R_PPC64_REL16_LO, /* type */ | |
2025 | 0, /* rightshift */ | |
2026 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
2027 | 16, /* bitsize */ | |
2028 | TRUE, /* pc_relative */ | |
2029 | 0, /* bitpos */ | |
2030 | complain_overflow_dont,/* complain_on_overflow */ | |
2031 | bfd_elf_generic_reloc, /* special_function */ | |
2032 | "R_PPC64_REL16_LO", /* name */ | |
2033 | FALSE, /* partial_inplace */ | |
2034 | 0, /* src_mask */ | |
2035 | 0xffff, /* dst_mask */ | |
2036 | TRUE), /* pcrel_offset */ | |
2037 | ||
2038 | /* The high order 16 bits of a relative address. */ | |
2039 | HOWTO (R_PPC64_REL16_HI, /* type */ | |
2040 | 16, /* rightshift */ | |
2041 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
2042 | 16, /* bitsize */ | |
2043 | TRUE, /* pc_relative */ | |
2044 | 0, /* bitpos */ | |
f9c6b907 | 2045 | complain_overflow_signed, /* complain_on_overflow */ |
25f23106 AM |
2046 | bfd_elf_generic_reloc, /* special_function */ |
2047 | "R_PPC64_REL16_HI", /* name */ | |
2048 | FALSE, /* partial_inplace */ | |
2049 | 0, /* src_mask */ | |
2050 | 0xffff, /* dst_mask */ | |
2051 | TRUE), /* pcrel_offset */ | |
2052 | ||
2053 | /* The high order 16 bits of a relative address, plus 1 if the contents of | |
2054 | the low 16 bits, treated as a signed number, is negative. */ | |
2055 | HOWTO (R_PPC64_REL16_HA, /* type */ | |
2056 | 16, /* rightshift */ | |
2057 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
2058 | 16, /* bitsize */ | |
2059 | TRUE, /* pc_relative */ | |
2060 | 0, /* bitpos */ | |
f9c6b907 | 2061 | complain_overflow_signed, /* complain_on_overflow */ |
25f23106 AM |
2062 | ppc64_elf_ha_reloc, /* special_function */ |
2063 | "R_PPC64_REL16_HA", /* name */ | |
2064 | FALSE, /* partial_inplace */ | |
2065 | 0, /* src_mask */ | |
2066 | 0xffff, /* dst_mask */ | |
2067 | TRUE), /* pcrel_offset */ | |
2068 | ||
a680de9a PB |
2069 | /* Like R_PPC64_REL16_HA but for split field in addpcis. */ |
2070 | HOWTO (R_PPC64_REL16DX_HA, /* type */ | |
2071 | 16, /* rightshift */ | |
2072 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
2073 | 16, /* bitsize */ | |
2074 | TRUE, /* pc_relative */ | |
2075 | 0, /* bitpos */ | |
2076 | complain_overflow_signed, /* complain_on_overflow */ | |
2077 | ppc64_elf_ha_reloc, /* special_function */ | |
2078 | "R_PPC64_REL16DX_HA", /* name */ | |
2079 | FALSE, /* partial_inplace */ | |
2080 | 0, /* src_mask */ | |
2081 | 0x1fffc1, /* dst_mask */ | |
2082 | TRUE), /* pcrel_offset */ | |
2083 | ||
7ba71655 AM |
2084 | /* A split-field reloc for addpcis, non-relative (gas internal use only). */ |
2085 | HOWTO (R_PPC64_16DX_HA, /* type */ | |
2086 | 16, /* rightshift */ | |
2087 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
2088 | 16, /* bitsize */ | |
2089 | FALSE, /* pc_relative */ | |
2090 | 0, /* bitpos */ | |
2091 | complain_overflow_signed, /* complain_on_overflow */ | |
2092 | ppc64_elf_ha_reloc, /* special_function */ | |
2093 | "R_PPC64_16DX_HA", /* name */ | |
2094 | FALSE, /* partial_inplace */ | |
2095 | 0, /* src_mask */ | |
2096 | 0x1fffc1, /* dst_mask */ | |
2097 | FALSE), /* pcrel_offset */ | |
2098 | ||
f9c6b907 AM |
2099 | /* Like R_PPC64_ADDR16_HI, but no overflow. */ |
2100 | HOWTO (R_PPC64_ADDR16_HIGH, /* type */ | |
2101 | 16, /* rightshift */ | |
2102 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
2103 | 16, /* bitsize */ | |
2104 | FALSE, /* pc_relative */ | |
2105 | 0, /* bitpos */ | |
2106 | complain_overflow_dont, /* complain_on_overflow */ | |
2107 | bfd_elf_generic_reloc, /* special_function */ | |
2108 | "R_PPC64_ADDR16_HIGH", /* name */ | |
2109 | FALSE, /* partial_inplace */ | |
2110 | 0, /* src_mask */ | |
2111 | 0xffff, /* dst_mask */ | |
2112 | FALSE), /* pcrel_offset */ | |
2113 | ||
2114 | /* Like R_PPC64_ADDR16_HA, but no overflow. */ | |
2115 | HOWTO (R_PPC64_ADDR16_HIGHA, /* type */ | |
2116 | 16, /* rightshift */ | |
2117 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
2118 | 16, /* bitsize */ | |
2119 | FALSE, /* pc_relative */ | |
2120 | 0, /* bitpos */ | |
2121 | complain_overflow_dont, /* complain_on_overflow */ | |
2122 | ppc64_elf_ha_reloc, /* special_function */ | |
2123 | "R_PPC64_ADDR16_HIGHA", /* name */ | |
2124 | FALSE, /* partial_inplace */ | |
2125 | 0, /* src_mask */ | |
2126 | 0xffff, /* dst_mask */ | |
2127 | FALSE), /* pcrel_offset */ | |
2128 | ||
2129 | /* Like R_PPC64_DTPREL16_HI, but no overflow. */ | |
2130 | HOWTO (R_PPC64_DTPREL16_HIGH, | |
2131 | 16, /* rightshift */ | |
2132 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
2133 | 16, /* bitsize */ | |
2134 | FALSE, /* pc_relative */ | |
2135 | 0, /* bitpos */ | |
2136 | complain_overflow_dont, /* complain_on_overflow */ | |
2137 | ppc64_elf_unhandled_reloc, /* special_function */ | |
2138 | "R_PPC64_DTPREL16_HIGH", /* name */ | |
2139 | FALSE, /* partial_inplace */ | |
2140 | 0, /* src_mask */ | |
2141 | 0xffff, /* dst_mask */ | |
2142 | FALSE), /* pcrel_offset */ | |
2143 | ||
2144 | /* Like R_PPC64_DTPREL16_HA, but no overflow. */ | |
2145 | HOWTO (R_PPC64_DTPREL16_HIGHA, | |
2146 | 16, /* rightshift */ | |
2147 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
2148 | 16, /* bitsize */ | |
2149 | FALSE, /* pc_relative */ | |
2150 | 0, /* bitpos */ | |
2151 | complain_overflow_dont, /* complain_on_overflow */ | |
2152 | ppc64_elf_unhandled_reloc, /* special_function */ | |
2153 | "R_PPC64_DTPREL16_HIGHA", /* name */ | |
2154 | FALSE, /* partial_inplace */ | |
2155 | 0, /* src_mask */ | |
2156 | 0xffff, /* dst_mask */ | |
2157 | FALSE), /* pcrel_offset */ | |
2158 | ||
2159 | /* Like R_PPC64_TPREL16_HI, but no overflow. */ | |
2160 | HOWTO (R_PPC64_TPREL16_HIGH, | |
2161 | 16, /* rightshift */ | |
2162 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
2163 | 16, /* bitsize */ | |
2164 | FALSE, /* pc_relative */ | |
2165 | 0, /* bitpos */ | |
2166 | complain_overflow_dont, /* complain_on_overflow */ | |
2167 | ppc64_elf_unhandled_reloc, /* special_function */ | |
2168 | "R_PPC64_TPREL16_HIGH", /* name */ | |
2169 | FALSE, /* partial_inplace */ | |
2170 | 0, /* src_mask */ | |
2171 | 0xffff, /* dst_mask */ | |
2172 | FALSE), /* pcrel_offset */ | |
2173 | ||
2174 | /* Like R_PPC64_TPREL16_HA, but no overflow. */ | |
2175 | HOWTO (R_PPC64_TPREL16_HIGHA, | |
2176 | 16, /* rightshift */ | |
2177 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
2178 | 16, /* bitsize */ | |
2179 | FALSE, /* pc_relative */ | |
2180 | 0, /* bitpos */ | |
2181 | complain_overflow_dont, /* complain_on_overflow */ | |
2182 | ppc64_elf_unhandled_reloc, /* special_function */ | |
2183 | "R_PPC64_TPREL16_HIGHA", /* name */ | |
2184 | FALSE, /* partial_inplace */ | |
2185 | 0, /* src_mask */ | |
2186 | 0xffff, /* dst_mask */ | |
2187 | FALSE), /* pcrel_offset */ | |
2188 | ||
006589cf AM |
2189 | /* Marker reloc on ELFv2 large-model function entry. */ |
2190 | HOWTO (R_PPC64_ENTRY, | |
2191 | 0, /* rightshift */ | |
2192 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
2193 | 32, /* bitsize */ | |
2194 | FALSE, /* pc_relative */ | |
2195 | 0, /* bitpos */ | |
2196 | complain_overflow_dont, /* complain_on_overflow */ | |
2197 | bfd_elf_generic_reloc, /* special_function */ | |
2198 | "R_PPC64_ENTRY", /* name */ | |
2199 | FALSE, /* partial_inplace */ | |
2200 | 0, /* src_mask */ | |
2201 | 0, /* dst_mask */ | |
2202 | FALSE), /* pcrel_offset */ | |
2203 | ||
45965137 AM |
2204 | /* Like ADDR64, but use local entry point of function. */ |
2205 | HOWTO (R_PPC64_ADDR64_LOCAL, /* type */ | |
2206 | 0, /* rightshift */ | |
2207 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
2208 | 64, /* bitsize */ | |
2209 | FALSE, /* pc_relative */ | |
2210 | 0, /* bitpos */ | |
2211 | complain_overflow_dont, /* complain_on_overflow */ | |
2212 | bfd_elf_generic_reloc, /* special_function */ | |
2213 | "R_PPC64_ADDR64_LOCAL", /* name */ | |
2214 | FALSE, /* partial_inplace */ | |
2215 | 0, /* src_mask */ | |
2216 | ONES (64), /* dst_mask */ | |
2217 | FALSE), /* pcrel_offset */ | |
2218 | ||
5bd4f169 AM |
2219 | /* GNU extension to record C++ vtable hierarchy. */ |
2220 | HOWTO (R_PPC64_GNU_VTINHERIT, /* type */ | |
2221 | 0, /* rightshift */ | |
2222 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
2223 | 0, /* bitsize */ | |
b34976b6 | 2224 | FALSE, /* pc_relative */ |
5bd4f169 AM |
2225 | 0, /* bitpos */ |
2226 | complain_overflow_dont, /* complain_on_overflow */ | |
2227 | NULL, /* special_function */ | |
2228 | "R_PPC64_GNU_VTINHERIT", /* name */ | |
b34976b6 | 2229 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
2230 | 0, /* src_mask */ |
2231 | 0, /* dst_mask */ | |
b34976b6 | 2232 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
2233 | |
2234 | /* GNU extension to record C++ vtable member usage. */ | |
2235 | HOWTO (R_PPC64_GNU_VTENTRY, /* type */ | |
2236 | 0, /* rightshift */ | |
2237 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
2238 | 0, /* bitsize */ | |
b34976b6 | 2239 | FALSE, /* pc_relative */ |
5bd4f169 AM |
2240 | 0, /* bitpos */ |
2241 | complain_overflow_dont, /* complain_on_overflow */ | |
2242 | NULL, /* special_function */ | |
2243 | "R_PPC64_GNU_VTENTRY", /* name */ | |
b34976b6 | 2244 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
2245 | 0, /* src_mask */ |
2246 | 0, /* dst_mask */ | |
b34976b6 | 2247 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
2248 | }; |
2249 | ||
2250 | \f | |
2251 | /* Initialize the ppc64_elf_howto_table, so that linear accesses can | |
2252 | be done. */ | |
2253 | ||
2254 | static void | |
4ce794b7 | 2255 | ppc_howto_init (void) |
5bd4f169 AM |
2256 | { |
2257 | unsigned int i, type; | |
2258 | ||
a4b6fadd | 2259 | for (i = 0; i < ARRAY_SIZE (ppc64_elf_howto_raw); i++) |
5bd4f169 AM |
2260 | { |
2261 | type = ppc64_elf_howto_raw[i].type; | |
a4b6fadd | 2262 | BFD_ASSERT (type < ARRAY_SIZE (ppc64_elf_howto_table)); |
5bd4f169 AM |
2263 | ppc64_elf_howto_table[type] = &ppc64_elf_howto_raw[i]; |
2264 | } | |
2265 | } | |
2266 | ||
2267 | static reloc_howto_type * | |
f3185997 | 2268 | ppc64_elf_reloc_type_lookup (bfd *abfd, |
4ce794b7 | 2269 | bfd_reloc_code_real_type code) |
5bd4f169 | 2270 | { |
411e1bfb | 2271 | enum elf_ppc64_reloc_type r = R_PPC64_NONE; |
5bd4f169 AM |
2272 | |
2273 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) | |
2274 | /* Initialize howto table if needed. */ | |
2275 | ppc_howto_init (); | |
2276 | ||
4ce794b7 | 2277 | switch (code) |
5bd4f169 AM |
2278 | { |
2279 | default: | |
f3185997 | 2280 | /* xgettext:c-format */ |
e8f5af78 | 2281 | _bfd_error_handler (_("%pB: unsupported relocation type %#x"), abfd, (int) code); |
f3185997 | 2282 | bfd_set_error (bfd_error_bad_value); |
4ce794b7 | 2283 | return NULL; |
5bd4f169 | 2284 | |
411e1bfb AM |
2285 | case BFD_RELOC_NONE: r = R_PPC64_NONE; |
2286 | break; | |
2287 | case BFD_RELOC_32: r = R_PPC64_ADDR32; | |
2288 | break; | |
2289 | case BFD_RELOC_PPC_BA26: r = R_PPC64_ADDR24; | |
2290 | break; | |
2291 | case BFD_RELOC_16: r = R_PPC64_ADDR16; | |
2292 | break; | |
2293 | case BFD_RELOC_LO16: r = R_PPC64_ADDR16_LO; | |
2294 | break; | |
2295 | case BFD_RELOC_HI16: r = R_PPC64_ADDR16_HI; | |
2296 | break; | |
f9c6b907 AM |
2297 | case BFD_RELOC_PPC64_ADDR16_HIGH: r = R_PPC64_ADDR16_HIGH; |
2298 | break; | |
411e1bfb | 2299 | case BFD_RELOC_HI16_S: r = R_PPC64_ADDR16_HA; |
5bd4f169 | 2300 | break; |
f9c6b907 AM |
2301 | case BFD_RELOC_PPC64_ADDR16_HIGHA: r = R_PPC64_ADDR16_HIGHA; |
2302 | break; | |
411e1bfb | 2303 | case BFD_RELOC_PPC_BA16: r = R_PPC64_ADDR14; |
5bd4f169 | 2304 | break; |
411e1bfb | 2305 | case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC64_ADDR14_BRTAKEN; |
5bd4f169 | 2306 | break; |
411e1bfb | 2307 | case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC64_ADDR14_BRNTAKEN; |
5bd4f169 | 2308 | break; |
411e1bfb | 2309 | case BFD_RELOC_PPC_B26: r = R_PPC64_REL24; |
5bd4f169 | 2310 | break; |
411e1bfb | 2311 | case BFD_RELOC_PPC_B16: r = R_PPC64_REL14; |
5bd4f169 | 2312 | break; |
411e1bfb | 2313 | case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC64_REL14_BRTAKEN; |
5bd4f169 | 2314 | break; |
411e1bfb | 2315 | case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC64_REL14_BRNTAKEN; |
5bd4f169 | 2316 | break; |
411e1bfb | 2317 | case BFD_RELOC_16_GOTOFF: r = R_PPC64_GOT16; |
5bd4f169 | 2318 | break; |
411e1bfb | 2319 | case BFD_RELOC_LO16_GOTOFF: r = R_PPC64_GOT16_LO; |
5bd4f169 | 2320 | break; |
411e1bfb | 2321 | case BFD_RELOC_HI16_GOTOFF: r = R_PPC64_GOT16_HI; |
5bd4f169 | 2322 | break; |
411e1bfb | 2323 | case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC64_GOT16_HA; |
5bd4f169 | 2324 | break; |
411e1bfb | 2325 | case BFD_RELOC_PPC_COPY: r = R_PPC64_COPY; |
5bd4f169 | 2326 | break; |
411e1bfb | 2327 | case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC64_GLOB_DAT; |
5bd4f169 | 2328 | break; |
411e1bfb | 2329 | case BFD_RELOC_32_PCREL: r = R_PPC64_REL32; |
5bd4f169 | 2330 | break; |
411e1bfb | 2331 | case BFD_RELOC_32_PLTOFF: r = R_PPC64_PLT32; |
5bd4f169 | 2332 | break; |
411e1bfb | 2333 | case BFD_RELOC_32_PLT_PCREL: r = R_PPC64_PLTREL32; |
5bd4f169 | 2334 | break; |
411e1bfb | 2335 | case BFD_RELOC_LO16_PLTOFF: r = R_PPC64_PLT16_LO; |
5bd4f169 | 2336 | break; |
411e1bfb | 2337 | case BFD_RELOC_HI16_PLTOFF: r = R_PPC64_PLT16_HI; |
5bd4f169 | 2338 | break; |
411e1bfb | 2339 | case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC64_PLT16_HA; |
5bd4f169 | 2340 | break; |
411e1bfb | 2341 | case BFD_RELOC_16_BASEREL: r = R_PPC64_SECTOFF; |
5bd4f169 | 2342 | break; |
411e1bfb | 2343 | case BFD_RELOC_LO16_BASEREL: r = R_PPC64_SECTOFF_LO; |
5bd4f169 | 2344 | break; |
411e1bfb | 2345 | case BFD_RELOC_HI16_BASEREL: r = R_PPC64_SECTOFF_HI; |
5bd4f169 | 2346 | break; |
411e1bfb | 2347 | case BFD_RELOC_HI16_S_BASEREL: r = R_PPC64_SECTOFF_HA; |
5bd4f169 | 2348 | break; |
411e1bfb | 2349 | case BFD_RELOC_CTOR: r = R_PPC64_ADDR64; |
5bd4f169 | 2350 | break; |
411e1bfb | 2351 | case BFD_RELOC_64: r = R_PPC64_ADDR64; |
5bd4f169 | 2352 | break; |
411e1bfb | 2353 | case BFD_RELOC_PPC64_HIGHER: r = R_PPC64_ADDR16_HIGHER; |
5bd4f169 | 2354 | break; |
411e1bfb | 2355 | case BFD_RELOC_PPC64_HIGHER_S: r = R_PPC64_ADDR16_HIGHERA; |
5bd4f169 | 2356 | break; |
411e1bfb | 2357 | case BFD_RELOC_PPC64_HIGHEST: r = R_PPC64_ADDR16_HIGHEST; |
5bd4f169 | 2358 | break; |
411e1bfb | 2359 | case BFD_RELOC_PPC64_HIGHEST_S: r = R_PPC64_ADDR16_HIGHESTA; |
5bd4f169 | 2360 | break; |
411e1bfb | 2361 | case BFD_RELOC_64_PCREL: r = R_PPC64_REL64; |
5bd4f169 | 2362 | break; |
411e1bfb | 2363 | case BFD_RELOC_64_PLTOFF: r = R_PPC64_PLT64; |
5bd4f169 | 2364 | break; |
411e1bfb | 2365 | case BFD_RELOC_64_PLT_PCREL: r = R_PPC64_PLTREL64; |
5bd4f169 | 2366 | break; |
411e1bfb | 2367 | case BFD_RELOC_PPC_TOC16: r = R_PPC64_TOC16; |
5bd4f169 | 2368 | break; |
411e1bfb | 2369 | case BFD_RELOC_PPC64_TOC16_LO: r = R_PPC64_TOC16_LO; |
5bd4f169 | 2370 | break; |
411e1bfb | 2371 | case BFD_RELOC_PPC64_TOC16_HI: r = R_PPC64_TOC16_HI; |
5bd4f169 | 2372 | break; |
411e1bfb | 2373 | case BFD_RELOC_PPC64_TOC16_HA: r = R_PPC64_TOC16_HA; |
5bd4f169 | 2374 | break; |
411e1bfb | 2375 | case BFD_RELOC_PPC64_TOC: r = R_PPC64_TOC; |
5bd4f169 | 2376 | break; |
411e1bfb | 2377 | case BFD_RELOC_PPC64_PLTGOT16: r = R_PPC64_PLTGOT16; |
5bd4f169 | 2378 | break; |
411e1bfb | 2379 | case BFD_RELOC_PPC64_PLTGOT16_LO: r = R_PPC64_PLTGOT16_LO; |
5bd4f169 | 2380 | break; |
411e1bfb | 2381 | case BFD_RELOC_PPC64_PLTGOT16_HI: r = R_PPC64_PLTGOT16_HI; |
5bd4f169 | 2382 | break; |
411e1bfb | 2383 | case BFD_RELOC_PPC64_PLTGOT16_HA: r = R_PPC64_PLTGOT16_HA; |
5bd4f169 | 2384 | break; |
411e1bfb | 2385 | case BFD_RELOC_PPC64_ADDR16_DS: r = R_PPC64_ADDR16_DS; |
5bd4f169 | 2386 | break; |
411e1bfb | 2387 | case BFD_RELOC_PPC64_ADDR16_LO_DS: r = R_PPC64_ADDR16_LO_DS; |
5bd4f169 | 2388 | break; |
411e1bfb | 2389 | case BFD_RELOC_PPC64_GOT16_DS: r = R_PPC64_GOT16_DS; |
5bd4f169 | 2390 | break; |
411e1bfb | 2391 | case BFD_RELOC_PPC64_GOT16_LO_DS: r = R_PPC64_GOT16_LO_DS; |
5bd4f169 | 2392 | break; |
411e1bfb | 2393 | case BFD_RELOC_PPC64_PLT16_LO_DS: r = R_PPC64_PLT16_LO_DS; |
5bd4f169 | 2394 | break; |
411e1bfb | 2395 | case BFD_RELOC_PPC64_SECTOFF_DS: r = R_PPC64_SECTOFF_DS; |
5bd4f169 | 2396 | break; |
411e1bfb | 2397 | case BFD_RELOC_PPC64_SECTOFF_LO_DS: r = R_PPC64_SECTOFF_LO_DS; |
5bd4f169 | 2398 | break; |
411e1bfb | 2399 | case BFD_RELOC_PPC64_TOC16_DS: r = R_PPC64_TOC16_DS; |
5bd4f169 | 2400 | break; |
411e1bfb | 2401 | case BFD_RELOC_PPC64_TOC16_LO_DS: r = R_PPC64_TOC16_LO_DS; |
5bd4f169 | 2402 | break; |
411e1bfb | 2403 | case BFD_RELOC_PPC64_PLTGOT16_DS: r = R_PPC64_PLTGOT16_DS; |
5bd4f169 | 2404 | break; |
411e1bfb | 2405 | case BFD_RELOC_PPC64_PLTGOT16_LO_DS: r = R_PPC64_PLTGOT16_LO_DS; |
5bd4f169 | 2406 | break; |
411e1bfb | 2407 | case BFD_RELOC_PPC_TLS: r = R_PPC64_TLS; |
5bd4f169 | 2408 | break; |
727fc41e AM |
2409 | case BFD_RELOC_PPC_TLSGD: r = R_PPC64_TLSGD; |
2410 | break; | |
2411 | case BFD_RELOC_PPC_TLSLD: r = R_PPC64_TLSLD; | |
2412 | break; | |
411e1bfb | 2413 | case BFD_RELOC_PPC_DTPMOD: r = R_PPC64_DTPMOD64; |
5bd4f169 | 2414 | break; |
411e1bfb | 2415 | case BFD_RELOC_PPC_TPREL16: r = R_PPC64_TPREL16; |
5bd4f169 | 2416 | break; |
411e1bfb | 2417 | case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC64_TPREL16_LO; |
5bd4f169 | 2418 | break; |
411e1bfb | 2419 | case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC64_TPREL16_HI; |
5bd4f169 | 2420 | break; |
f9c6b907 AM |
2421 | case BFD_RELOC_PPC64_TPREL16_HIGH: r = R_PPC64_TPREL16_HIGH; |
2422 | break; | |
411e1bfb | 2423 | case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC64_TPREL16_HA; |
5bd4f169 | 2424 | break; |
f9c6b907 AM |
2425 | case BFD_RELOC_PPC64_TPREL16_HIGHA: r = R_PPC64_TPREL16_HIGHA; |
2426 | break; | |
411e1bfb | 2427 | case BFD_RELOC_PPC_TPREL: r = R_PPC64_TPREL64; |
5bd4f169 | 2428 | break; |
411e1bfb AM |
2429 | case BFD_RELOC_PPC_DTPREL16: r = R_PPC64_DTPREL16; |
2430 | break; | |
2431 | case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC64_DTPREL16_LO; | |
2432 | break; | |
2433 | case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC64_DTPREL16_HI; | |
2434 | break; | |
f9c6b907 AM |
2435 | case BFD_RELOC_PPC64_DTPREL16_HIGH: r = R_PPC64_DTPREL16_HIGH; |
2436 | break; | |
411e1bfb AM |
2437 | case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC64_DTPREL16_HA; |
2438 | break; | |
f9c6b907 AM |
2439 | case BFD_RELOC_PPC64_DTPREL16_HIGHA: r = R_PPC64_DTPREL16_HIGHA; |
2440 | break; | |
411e1bfb AM |
2441 | case BFD_RELOC_PPC_DTPREL: r = R_PPC64_DTPREL64; |
2442 | break; | |
2443 | case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC64_GOT_TLSGD16; | |
2444 | break; | |
2445 | case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC64_GOT_TLSGD16_LO; | |
2446 | break; | |
2447 | case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC64_GOT_TLSGD16_HI; | |
2448 | break; | |
2449 | case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC64_GOT_TLSGD16_HA; | |
2450 | break; | |
2451 | case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC64_GOT_TLSLD16; | |
2452 | break; | |
2453 | case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC64_GOT_TLSLD16_LO; | |
2454 | break; | |
2455 | case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC64_GOT_TLSLD16_HI; | |
2456 | break; | |
2457 | case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC64_GOT_TLSLD16_HA; | |
2458 | break; | |
2459 | case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC64_GOT_TPREL16_DS; | |
2460 | break; | |
2461 | case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC64_GOT_TPREL16_LO_DS; | |
2462 | break; | |
2463 | case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC64_GOT_TPREL16_HI; | |
2464 | break; | |
2465 | case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC64_GOT_TPREL16_HA; | |
2466 | break; | |
2467 | case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC64_GOT_DTPREL16_DS; | |
2468 | break; | |
2469 | case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC64_GOT_DTPREL16_LO_DS; | |
2470 | break; | |
2471 | case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC64_GOT_DTPREL16_HI; | |
2472 | break; | |
2473 | case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC64_GOT_DTPREL16_HA; | |
2474 | break; | |
2475 | case BFD_RELOC_PPC64_TPREL16_DS: r = R_PPC64_TPREL16_DS; | |
2476 | break; | |
2477 | case BFD_RELOC_PPC64_TPREL16_LO_DS: r = R_PPC64_TPREL16_LO_DS; | |
2478 | break; | |
2479 | case BFD_RELOC_PPC64_TPREL16_HIGHER: r = R_PPC64_TPREL16_HIGHER; | |
2480 | break; | |
2481 | case BFD_RELOC_PPC64_TPREL16_HIGHERA: r = R_PPC64_TPREL16_HIGHERA; | |
2482 | break; | |
2483 | case BFD_RELOC_PPC64_TPREL16_HIGHEST: r = R_PPC64_TPREL16_HIGHEST; | |
2484 | break; | |
2485 | case BFD_RELOC_PPC64_TPREL16_HIGHESTA: r = R_PPC64_TPREL16_HIGHESTA; | |
2486 | break; | |
2487 | case BFD_RELOC_PPC64_DTPREL16_DS: r = R_PPC64_DTPREL16_DS; | |
2488 | break; | |
2489 | case BFD_RELOC_PPC64_DTPREL16_LO_DS: r = R_PPC64_DTPREL16_LO_DS; | |
2490 | break; | |
2491 | case BFD_RELOC_PPC64_DTPREL16_HIGHER: r = R_PPC64_DTPREL16_HIGHER; | |
2492 | break; | |
2493 | case BFD_RELOC_PPC64_DTPREL16_HIGHERA: r = R_PPC64_DTPREL16_HIGHERA; | |
2494 | break; | |
2495 | case BFD_RELOC_PPC64_DTPREL16_HIGHEST: r = R_PPC64_DTPREL16_HIGHEST; | |
2496 | break; | |
2497 | case BFD_RELOC_PPC64_DTPREL16_HIGHESTA: r = R_PPC64_DTPREL16_HIGHESTA; | |
2498 | break; | |
25f23106 AM |
2499 | case BFD_RELOC_16_PCREL: r = R_PPC64_REL16; |
2500 | break; | |
2501 | case BFD_RELOC_LO16_PCREL: r = R_PPC64_REL16_LO; | |
2502 | break; | |
2503 | case BFD_RELOC_HI16_PCREL: r = R_PPC64_REL16_HI; | |
2504 | break; | |
2505 | case BFD_RELOC_HI16_S_PCREL: r = R_PPC64_REL16_HA; | |
2506 | break; | |
7ba71655 AM |
2507 | case BFD_RELOC_PPC_16DX_HA: r = R_PPC64_16DX_HA; |
2508 | break; | |
a680de9a PB |
2509 | case BFD_RELOC_PPC_REL16DX_HA: r = R_PPC64_REL16DX_HA; |
2510 | break; | |
006589cf AM |
2511 | case BFD_RELOC_PPC64_ENTRY: r = R_PPC64_ENTRY; |
2512 | break; | |
45965137 AM |
2513 | case BFD_RELOC_PPC64_ADDR64_LOCAL: r = R_PPC64_ADDR64_LOCAL; |
2514 | break; | |
411e1bfb AM |
2515 | case BFD_RELOC_VTABLE_INHERIT: r = R_PPC64_GNU_VTINHERIT; |
2516 | break; | |
2517 | case BFD_RELOC_VTABLE_ENTRY: r = R_PPC64_GNU_VTENTRY; | |
5bd4f169 AM |
2518 | break; |
2519 | } | |
2520 | ||
4ce794b7 | 2521 | return ppc64_elf_howto_table[r]; |
5bd4f169 AM |
2522 | }; |
2523 | ||
157090f7 AM |
2524 | static reloc_howto_type * |
2525 | ppc64_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, | |
2526 | const char *r_name) | |
2527 | { | |
2528 | unsigned int i; | |
2529 | ||
a4b6fadd | 2530 | for (i = 0; i < ARRAY_SIZE (ppc64_elf_howto_raw); i++) |
157090f7 AM |
2531 | if (ppc64_elf_howto_raw[i].name != NULL |
2532 | && strcasecmp (ppc64_elf_howto_raw[i].name, r_name) == 0) | |
2533 | return &ppc64_elf_howto_raw[i]; | |
2534 | ||
f3185997 | 2535 | |
157090f7 AM |
2536 | return NULL; |
2537 | } | |
2538 | ||
5bd4f169 AM |
2539 | /* Set the howto pointer for a PowerPC ELF reloc. */ |
2540 | ||
f3185997 | 2541 | static bfd_boolean |
4aef7643 | 2542 | ppc64_elf_info_to_howto (bfd *abfd, arelent *cache_ptr, |
4ce794b7 | 2543 | Elf_Internal_Rela *dst) |
5bd4f169 | 2544 | { |
65f38f15 AM |
2545 | unsigned int type; |
2546 | ||
ef60b7ff | 2547 | /* Initialize howto table if needed. */ |
5bd4f169 | 2548 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) |
5bd4f169 AM |
2549 | ppc_howto_init (); |
2550 | ||
65f38f15 | 2551 | type = ELF64_R_TYPE (dst->r_info); |
a4b6fadd | 2552 | if (type >= ARRAY_SIZE (ppc64_elf_howto_table)) |
d0fb9a8d | 2553 | { |
695344c0 | 2554 | /* xgettext:c-format */ |
0aa13fee | 2555 | _bfd_error_handler (_("%pB: unsupported relocation type %#x"), |
cf97bcb0 | 2556 | abfd, type); |
f3185997 NC |
2557 | bfd_set_error (bfd_error_bad_value); |
2558 | return FALSE; | |
d0fb9a8d | 2559 | } |
65f38f15 | 2560 | cache_ptr->howto = ppc64_elf_howto_table[type]; |
f3185997 NC |
2561 | if (cache_ptr->howto == NULL || cache_ptr->howto->name == NULL) |
2562 | { | |
2563 | /* xgettext:c-format */ | |
2564 | _bfd_error_handler (_("%pB: unsupported relocation type %#x"), | |
2565 | abfd, type); | |
2566 | bfd_set_error (bfd_error_bad_value); | |
2567 | return FALSE; | |
2568 | } | |
2569 | ||
2570 | return TRUE; | |
5bd4f169 AM |
2571 | } |
2572 | ||
04c9666a | 2573 | /* Handle the R_PPC64_ADDR16_HA and similar relocs. */ |
5bd4f169 AM |
2574 | |
2575 | static bfd_reloc_status_type | |
4ce794b7 AM |
2576 | ppc64_elf_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2577 | void *data, asection *input_section, | |
2578 | bfd *output_bfd, char **error_message) | |
5bd4f169 | 2579 | { |
a680de9a PB |
2580 | enum elf_ppc64_reloc_type r_type; |
2581 | long insn; | |
2582 | bfd_size_type octets; | |
3de43e7b | 2583 | bfd_vma value; |
a680de9a | 2584 | |
805fc799 AM |
2585 | /* If this is a relocatable link (output_bfd test tells us), just |
2586 | call the generic function. Any adjustment will be done at final | |
2587 | link time. */ | |
2588 | if (output_bfd != NULL) | |
cedb70c5 | 2589 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2590 | input_section, output_bfd, error_message); |
2591 | ||
2592 | /* Adjust the addend for sign extension of the low 16 bits. | |
2593 | We won't actually be using the low 16 bits, so trashing them | |
2594 | doesn't matter. */ | |
2595 | reloc_entry->addend += 0x8000; | |
a680de9a PB |
2596 | r_type = reloc_entry->howto->type; |
2597 | if (r_type != R_PPC64_REL16DX_HA) | |
2598 | return bfd_reloc_continue; | |
2599 | ||
2600 | value = 0; | |
2601 | if (!bfd_is_com_section (symbol->section)) | |
2602 | value = symbol->value; | |
2603 | value += (reloc_entry->addend | |
2604 | + symbol->section->output_offset | |
2605 | + symbol->section->output_section->vma); | |
2606 | value -= (reloc_entry->address | |
2607 | + input_section->output_offset | |
2608 | + input_section->output_section->vma); | |
3de43e7b | 2609 | value = (bfd_signed_vma) value >> 16; |
a680de9a PB |
2610 | |
2611 | octets = reloc_entry->address * bfd_octets_per_byte (abfd); | |
2612 | insn = bfd_get_32 (abfd, (bfd_byte *) data + octets); | |
2613 | insn &= ~0x1fffc1; | |
3de43e7b | 2614 | insn |= (value & 0xffc1) | ((value & 0x3e) << 15); |
a680de9a | 2615 | bfd_put_32 (abfd, insn, (bfd_byte *) data + octets); |
3de43e7b | 2616 | if (value + 0x8000 > 0xffff) |
a680de9a PB |
2617 | return bfd_reloc_overflow; |
2618 | return bfd_reloc_ok; | |
805fc799 | 2619 | } |
5bd4f169 | 2620 | |
2441e016 AM |
2621 | static bfd_reloc_status_type |
2622 | ppc64_elf_branch_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, | |
2623 | void *data, asection *input_section, | |
2624 | bfd *output_bfd, char **error_message) | |
2625 | { | |
2626 | if (output_bfd != NULL) | |
2627 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, | |
2628 | input_section, output_bfd, error_message); | |
2629 | ||
699733f6 AM |
2630 | if (strcmp (symbol->section->name, ".opd") == 0 |
2631 | && (symbol->section->owner->flags & DYNAMIC) == 0) | |
2441e016 AM |
2632 | { |
2633 | bfd_vma dest = opd_entry_value (symbol->section, | |
2634 | symbol->value + reloc_entry->addend, | |
aef36ac1 | 2635 | NULL, NULL, FALSE); |
2441e016 AM |
2636 | if (dest != (bfd_vma) -1) |
2637 | reloc_entry->addend = dest - (symbol->value | |
2638 | + symbol->section->output_section->vma | |
2639 | + symbol->section->output_offset); | |
2640 | } | |
810d4e75 AM |
2641 | else |
2642 | { | |
2643 | elf_symbol_type *elfsym = (elf_symbol_type *) symbol; | |
2644 | ||
2645 | if (symbol->section->owner != abfd | |
9f284bf9 | 2646 | && symbol->section->owner != NULL |
810d4e75 AM |
2647 | && abiversion (symbol->section->owner) >= 2) |
2648 | { | |
2649 | unsigned int i; | |
2650 | ||
2651 | for (i = 0; i < symbol->section->owner->symcount; ++i) | |
2652 | { | |
2653 | asymbol *symdef = symbol->section->owner->outsymbols[i]; | |
2654 | ||
2655 | if (strcmp (symdef->name, symbol->name) == 0) | |
2656 | { | |
2657 | elfsym = (elf_symbol_type *) symdef; | |
2658 | break; | |
2659 | } | |
2660 | } | |
2661 | } | |
2662 | reloc_entry->addend | |
2663 | += PPC64_LOCAL_ENTRY_OFFSET (elfsym->internal_elf_sym.st_other); | |
2664 | } | |
2441e016 AM |
2665 | return bfd_reloc_continue; |
2666 | } | |
2667 | ||
805fc799 | 2668 | static bfd_reloc_status_type |
4ce794b7 AM |
2669 | ppc64_elf_brtaken_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2670 | void *data, asection *input_section, | |
2671 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2672 | { |
2673 | long insn; | |
04c9666a | 2674 | enum elf_ppc64_reloc_type r_type; |
805fc799 | 2675 | bfd_size_type octets; |
794e51c0 AM |
2676 | /* Assume 'at' branch hints. */ |
2677 | bfd_boolean is_isa_v2 = TRUE; | |
805fc799 AM |
2678 | |
2679 | /* If this is a relocatable link (output_bfd test tells us), just | |
2680 | call the generic function. Any adjustment will be done at final | |
2681 | link time. */ | |
5bd4f169 | 2682 | if (output_bfd != NULL) |
cedb70c5 | 2683 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2684 | input_section, output_bfd, error_message); |
2685 | ||
2686 | octets = reloc_entry->address * bfd_octets_per_byte (abfd); | |
2687 | insn = bfd_get_32 (abfd, (bfd_byte *) data + octets); | |
2688 | insn &= ~(0x01 << 21); | |
4ce794b7 | 2689 | r_type = reloc_entry->howto->type; |
805fc799 AM |
2690 | if (r_type == R_PPC64_ADDR14_BRTAKEN |
2691 | || r_type == R_PPC64_REL14_BRTAKEN) | |
cedb70c5 | 2692 | insn |= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */ |
805fc799 | 2693 | |
794e51c0 | 2694 | if (is_isa_v2) |
5bd4f169 | 2695 | { |
805fc799 AM |
2696 | /* Set 'a' bit. This is 0b00010 in BO field for branch |
2697 | on CR(BI) insns (BO == 001at or 011at), and 0b01000 | |
2698 | for branch on CTR insns (BO == 1a00t or 1a01t). */ | |
2699 | if ((insn & (0x14 << 21)) == (0x04 << 21)) | |
2700 | insn |= 0x02 << 21; | |
2701 | else if ((insn & (0x14 << 21)) == (0x10 << 21)) | |
2702 | insn |= 0x08 << 21; | |
2703 | else | |
2441e016 | 2704 | goto out; |
5bd4f169 | 2705 | } |
805fc799 AM |
2706 | else |
2707 | { | |
2708 | bfd_vma target = 0; | |
2709 | bfd_vma from; | |
5bd4f169 | 2710 | |
805fc799 AM |
2711 | if (!bfd_is_com_section (symbol->section)) |
2712 | target = symbol->value; | |
2713 | target += symbol->section->output_section->vma; | |
2714 | target += symbol->section->output_offset; | |
2715 | target += reloc_entry->addend; | |
5bd4f169 | 2716 | |
805fc799 AM |
2717 | from = (reloc_entry->address |
2718 | + input_section->output_offset | |
2719 | + input_section->output_section->vma); | |
5bd4f169 | 2720 | |
805fc799 AM |
2721 | /* Invert 'y' bit if not the default. */ |
2722 | if ((bfd_signed_vma) (target - from) < 0) | |
2723 | insn ^= 0x01 << 21; | |
2724 | } | |
4ce794b7 | 2725 | bfd_put_32 (abfd, insn, (bfd_byte *) data + octets); |
2441e016 AM |
2726 | out: |
2727 | return ppc64_elf_branch_reloc (abfd, reloc_entry, symbol, data, | |
2728 | input_section, output_bfd, error_message); | |
805fc799 | 2729 | } |
5bd4f169 | 2730 | |
805fc799 | 2731 | static bfd_reloc_status_type |
4ce794b7 AM |
2732 | ppc64_elf_sectoff_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2733 | void *data, asection *input_section, | |
2734 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2735 | { |
2736 | /* If this is a relocatable link (output_bfd test tells us), just | |
2737 | call the generic function. Any adjustment will be done at final | |
2738 | link time. */ | |
2739 | if (output_bfd != NULL) | |
cedb70c5 | 2740 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 | 2741 | input_section, output_bfd, error_message); |
5bd4f169 | 2742 | |
805fc799 AM |
2743 | /* Subtract the symbol section base address. */ |
2744 | reloc_entry->addend -= symbol->section->output_section->vma; | |
5bd4f169 AM |
2745 | return bfd_reloc_continue; |
2746 | } | |
2747 | ||
805fc799 | 2748 | static bfd_reloc_status_type |
4ce794b7 AM |
2749 | ppc64_elf_sectoff_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2750 | void *data, asection *input_section, | |
2751 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2752 | { |
2753 | /* If this is a relocatable link (output_bfd test tells us), just | |
2754 | call the generic function. Any adjustment will be done at final | |
2755 | link time. */ | |
2756 | if (output_bfd != NULL) | |
cedb70c5 | 2757 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2758 | input_section, output_bfd, error_message); |
2759 | ||
2760 | /* Subtract the symbol section base address. */ | |
2761 | reloc_entry->addend -= symbol->section->output_section->vma; | |
2762 | ||
2763 | /* Adjust the addend for sign extension of the low 16 bits. */ | |
2764 | reloc_entry->addend += 0x8000; | |
2765 | return bfd_reloc_continue; | |
2766 | } | |
2767 | ||
2768 | static bfd_reloc_status_type | |
4ce794b7 AM |
2769 | ppc64_elf_toc_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2770 | void *data, asection *input_section, | |
2771 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2772 | { |
2773 | bfd_vma TOCstart; | |
2774 | ||
2775 | /* If this is a relocatable link (output_bfd test tells us), just | |
2776 | call the generic function. Any adjustment will be done at final | |
2777 | link time. */ | |
2778 | if (output_bfd != NULL) | |
cedb70c5 | 2779 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2780 | input_section, output_bfd, error_message); |
2781 | ||
2782 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
2783 | if (TOCstart == 0) | |
1c865ab2 | 2784 | TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner); |
805fc799 AM |
2785 | |
2786 | /* Subtract the TOC base address. */ | |
2787 | reloc_entry->addend -= TOCstart + TOC_BASE_OFF; | |
2788 | return bfd_reloc_continue; | |
2789 | } | |
2790 | ||
2791 | static bfd_reloc_status_type | |
4ce794b7 AM |
2792 | ppc64_elf_toc_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2793 | void *data, asection *input_section, | |
2794 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2795 | { |
2796 | bfd_vma TOCstart; | |
2797 | ||
2798 | /* If this is a relocatable link (output_bfd test tells us), just | |
2799 | call the generic function. Any adjustment will be done at final | |
2800 | link time. */ | |
2801 | if (output_bfd != NULL) | |
cedb70c5 | 2802 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2803 | input_section, output_bfd, error_message); |
2804 | ||
2805 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
2806 | if (TOCstart == 0) | |
1c865ab2 | 2807 | TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner); |
805fc799 AM |
2808 | |
2809 | /* Subtract the TOC base address. */ | |
2810 | reloc_entry->addend -= TOCstart + TOC_BASE_OFF; | |
2811 | ||
2812 | /* Adjust the addend for sign extension of the low 16 bits. */ | |
2813 | reloc_entry->addend += 0x8000; | |
2814 | return bfd_reloc_continue; | |
2815 | } | |
2816 | ||
2817 | static bfd_reloc_status_type | |
4ce794b7 AM |
2818 | ppc64_elf_toc64_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2819 | void *data, asection *input_section, | |
2820 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2821 | { |
2822 | bfd_vma TOCstart; | |
2823 | bfd_size_type octets; | |
2824 | ||
2825 | /* If this is a relocatable link (output_bfd test tells us), just | |
2826 | call the generic function. Any adjustment will be done at final | |
2827 | link time. */ | |
2828 | if (output_bfd != NULL) | |
cedb70c5 | 2829 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2830 | input_section, output_bfd, error_message); |
2831 | ||
2832 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
2833 | if (TOCstart == 0) | |
1c865ab2 | 2834 | TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner); |
805fc799 AM |
2835 | |
2836 | octets = reloc_entry->address * bfd_octets_per_byte (abfd); | |
2837 | bfd_put_64 (abfd, TOCstart + TOC_BASE_OFF, (bfd_byte *) data + octets); | |
2838 | return bfd_reloc_ok; | |
2839 | } | |
2840 | ||
2841 | static bfd_reloc_status_type | |
4ce794b7 AM |
2842 | ppc64_elf_unhandled_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2843 | void *data, asection *input_section, | |
2844 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2845 | { |
2846 | /* If this is a relocatable link (output_bfd test tells us), just | |
2847 | call the generic function. Any adjustment will be done at final | |
2848 | link time. */ | |
2849 | if (output_bfd != NULL) | |
cedb70c5 | 2850 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2851 | input_section, output_bfd, error_message); |
2852 | ||
2853 | if (error_message != NULL) | |
2854 | { | |
2855 | static char buf[60]; | |
2856 | sprintf (buf, "generic linker can't handle %s", | |
2857 | reloc_entry->howto->name); | |
2858 | *error_message = buf; | |
2859 | } | |
2860 | return bfd_reloc_dangerous; | |
2861 | } | |
2862 | ||
927be08e AM |
2863 | /* Track GOT entries needed for a given symbol. We might need more |
2864 | than one got entry per symbol. */ | |
2865 | struct got_entry | |
2866 | { | |
2867 | struct got_entry *next; | |
2868 | ||
2869 | /* The symbol addend that we'll be placing in the GOT. */ | |
2870 | bfd_vma addend; | |
2871 | ||
2872 | /* Unlike other ELF targets, we use separate GOT entries for the same | |
2873 | symbol referenced from different input files. This is to support | |
2874 | automatic multiple TOC/GOT sections, where the TOC base can vary | |
2875 | from one input file to another. After partitioning into TOC groups | |
2876 | we merge entries within the group. | |
2877 | ||
2878 | Point to the BFD owning this GOT entry. */ | |
2879 | bfd *owner; | |
2880 | ||
2881 | /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD, | |
2882 | TLS_TPREL or TLS_DTPREL for tls entries. */ | |
f961d9dd | 2883 | unsigned char tls_type; |
927be08e AM |
2884 | |
2885 | /* Non-zero if got.ent points to real entry. */ | |
f961d9dd | 2886 | unsigned char is_indirect; |
927be08e AM |
2887 | |
2888 | /* Reference count until size_dynamic_sections, GOT offset thereafter. */ | |
2889 | union | |
2890 | { | |
2891 | bfd_signed_vma refcount; | |
2892 | bfd_vma offset; | |
2893 | struct got_entry *ent; | |
2894 | } got; | |
2895 | }; | |
2896 | ||
2897 | /* The same for PLT. */ | |
2898 | struct plt_entry | |
2899 | { | |
2900 | struct plt_entry *next; | |
2901 | ||
2902 | bfd_vma addend; | |
2903 | ||
2904 | union | |
2905 | { | |
2906 | bfd_signed_vma refcount; | |
2907 | bfd_vma offset; | |
2908 | } plt; | |
2909 | }; | |
2910 | ||
e717da7e AM |
2911 | struct ppc64_elf_obj_tdata |
2912 | { | |
2913 | struct elf_obj_tdata elf; | |
2914 | ||
2915 | /* Shortcuts to dynamic linker sections. */ | |
2916 | asection *got; | |
2917 | asection *relgot; | |
2918 | ||
b3fac117 AM |
2919 | /* Used during garbage collection. We attach global symbols defined |
2920 | on removed .opd entries to this section so that the sym is removed. */ | |
2921 | asection *deleted_section; | |
81688140 | 2922 | |
927be08e | 2923 | /* TLS local dynamic got entry handling. Support for multiple GOT |
e717da7e | 2924 | sections means we potentially need one of these for each input bfd. */ |
927be08e | 2925 | struct got_entry tlsld_got; |
8860955f | 2926 | |
729eabd5 AM |
2927 | union { |
2928 | /* A copy of relocs before they are modified for --emit-relocs. */ | |
2929 | Elf_Internal_Rela *relocs; | |
2930 | ||
2931 | /* Section contents. */ | |
2932 | bfd_byte *contents; | |
2933 | } opd; | |
d77c8a4b AM |
2934 | |
2935 | /* Nonzero if this bfd has small toc/got relocs, ie. that expect | |
2936 | the reloc to be in the range -32768 to 32767. */ | |
98528052 AM |
2937 | unsigned int has_small_toc_reloc : 1; |
2938 | ||
560c8763 AM |
2939 | /* Set if toc/got ha relocs detected not using r2, or lo reloc |
2940 | instruction not one we handle. */ | |
2941 | unsigned int unexpected_toc_insn : 1; | |
e717da7e AM |
2942 | }; |
2943 | ||
2944 | #define ppc64_elf_tdata(bfd) \ | |
2945 | ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any) | |
2946 | ||
2947 | #define ppc64_tlsld_got(bfd) \ | |
2948 | (&ppc64_elf_tdata (bfd)->tlsld_got) | |
2949 | ||
0c8d6e5c AM |
2950 | #define is_ppc64_elf(bfd) \ |
2951 | (bfd_get_flavour (bfd) == bfd_target_elf_flavour \ | |
4dfe6ac6 | 2952 | && elf_object_id (bfd) == PPC64_ELF_DATA) |
0c8d6e5c | 2953 | |
e717da7e AM |
2954 | /* Override the generic function because we store some extras. */ |
2955 | ||
2956 | static bfd_boolean | |
2957 | ppc64_elf_mkobject (bfd *abfd) | |
2958 | { | |
0ffa91dd | 2959 | return bfd_elf_allocate_object (abfd, sizeof (struct ppc64_elf_obj_tdata), |
4dfe6ac6 | 2960 | PPC64_ELF_DATA); |
e717da7e AM |
2961 | } |
2962 | ||
feee612b | 2963 | /* Fix bad default arch selected for a 64 bit input bfd when the |
14b57c7c | 2964 | default is 32 bit. Also select arch based on apuinfo. */ |
feee612b | 2965 | |
b34976b6 | 2966 | static bfd_boolean |
4ce794b7 | 2967 | ppc64_elf_object_p (bfd *abfd) |
feee612b | 2968 | { |
14b57c7c AM |
2969 | if (!abfd->arch_info->the_default) |
2970 | return TRUE; | |
2971 | ||
2972 | if (abfd->arch_info->bits_per_word == 32) | |
feee612b AM |
2973 | { |
2974 | Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd); | |
2975 | ||
2976 | if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS64) | |
2977 | { | |
2978 | /* Relies on arch after 32 bit default being 64 bit default. */ | |
2979 | abfd->arch_info = abfd->arch_info->next; | |
2980 | BFD_ASSERT (abfd->arch_info->bits_per_word == 64); | |
2981 | } | |
2982 | } | |
14b57c7c | 2983 | return _bfd_elf_ppc_set_arch (abfd); |
feee612b AM |
2984 | } |
2985 | ||
d37c89e5 AM |
2986 | /* Support for core dump NOTE sections. */ |
2987 | ||
2988 | static bfd_boolean | |
2989 | ppc64_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) | |
2990 | { | |
eea6121a | 2991 | size_t offset, size; |
d37c89e5 AM |
2992 | |
2993 | if (note->descsz != 504) | |
2994 | return FALSE; | |
2995 | ||
2996 | /* pr_cursig */ | |
228e534f | 2997 | elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12); |
d37c89e5 AM |
2998 | |
2999 | /* pr_pid */ | |
228e534f | 3000 | elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 32); |
d37c89e5 AM |
3001 | |
3002 | /* pr_reg */ | |
3003 | offset = 112; | |
eea6121a | 3004 | size = 384; |
d37c89e5 AM |
3005 | |
3006 | /* Make a ".reg/999" section. */ | |
3007 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", | |
eea6121a | 3008 | size, note->descpos + offset); |
d37c89e5 AM |
3009 | } |
3010 | ||
3011 | static bfd_boolean | |
3012 | ppc64_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) | |
3013 | { | |
3014 | if (note->descsz != 136) | |
3015 | return FALSE; | |
3016 | ||
228e534f | 3017 | elf_tdata (abfd)->core->pid |
bc989cdc | 3018 | = bfd_get_32 (abfd, note->descdata + 24); |
228e534f | 3019 | elf_tdata (abfd)->core->program |
d37c89e5 | 3020 | = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16); |
228e534f | 3021 | elf_tdata (abfd)->core->command |
d37c89e5 AM |
3022 | = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80); |
3023 | ||
3024 | return TRUE; | |
3025 | } | |
3026 | ||
183e98be AM |
3027 | static char * |
3028 | ppc64_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type, | |
3029 | ...) | |
3030 | { | |
3031 | switch (note_type) | |
3032 | { | |
3033 | default: | |
3034 | return NULL; | |
3035 | ||
3036 | case NT_PRPSINFO: | |
3037 | { | |
3038 | char data[136]; | |
3039 | va_list ap; | |
3040 | ||
3041 | va_start (ap, note_type); | |
75cd47ed | 3042 | memset (data, 0, sizeof (data)); |
183e98be AM |
3043 | strncpy (data + 40, va_arg (ap, const char *), 16); |
3044 | strncpy (data + 56, va_arg (ap, const char *), 80); | |
3045 | va_end (ap); | |
3046 | return elfcore_write_note (abfd, buf, bufsiz, | |
3047 | "CORE", note_type, data, sizeof (data)); | |
3048 | } | |
3049 | ||
3050 | case NT_PRSTATUS: | |
3051 | { | |
3052 | char data[504]; | |
3053 | va_list ap; | |
3054 | long pid; | |
3055 | int cursig; | |
3056 | const void *greg; | |
3057 | ||
3058 | va_start (ap, note_type); | |
3059 | memset (data, 0, 112); | |
3060 | pid = va_arg (ap, long); | |
3061 | bfd_put_32 (abfd, pid, data + 32); | |
3062 | cursig = va_arg (ap, int); | |
3063 | bfd_put_16 (abfd, cursig, data + 12); | |
3064 | greg = va_arg (ap, const void *); | |
3065 | memcpy (data + 112, greg, 384); | |
3066 | memset (data + 496, 0, 8); | |
3067 | va_end (ap); | |
3068 | return elfcore_write_note (abfd, buf, bufsiz, | |
3069 | "CORE", note_type, data, sizeof (data)); | |
3070 | } | |
3071 | } | |
3072 | } | |
3073 | ||
5d35169e AM |
3074 | /* Add extra PPC sections. */ |
3075 | ||
b35d266b | 3076 | static const struct bfd_elf_special_section ppc64_elf_special_sections[]= |
7f4d3958 | 3077 | { |
07d6d2b8 AM |
3078 | { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, 0 }, |
3079 | { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, | |
0112cd26 | 3080 | { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, |
07d6d2b8 AM |
3081 | { STRING_COMMA_LEN (".toc"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, |
3082 | { STRING_COMMA_LEN (".toc1"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
0112cd26 | 3083 | { STRING_COMMA_LEN (".tocbss"), 0, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, |
07d6d2b8 | 3084 | { NULL, 0, 0, 0, 0 } |
5d35169e AM |
3085 | }; |
3086 | ||
7c8fe5c4 AM |
3087 | enum _ppc64_sec_type { |
3088 | sec_normal = 0, | |
3089 | sec_opd = 1, | |
3090 | sec_toc = 2 | |
3091 | }; | |
3092 | ||
f0abc2a1 AM |
3093 | struct _ppc64_elf_section_data |
3094 | { | |
3095 | struct bfd_elf_section_data elf; | |
411e1bfb | 3096 | |
f0abc2a1 AM |
3097 | union |
3098 | { | |
51aecdc5 AM |
3099 | /* An array with one entry for each opd function descriptor, |
3100 | and some spares since opd entries may be either 16 or 24 bytes. */ | |
3101 | #define OPD_NDX(OFF) ((OFF) >> 4) | |
74f0fb50 AM |
3102 | struct _opd_sec_data |
3103 | { | |
3104 | /* Points to the function code section for local opd entries. */ | |
3105 | asection **func_sec; | |
3106 | ||
3107 | /* After editing .opd, adjust references to opd local syms. */ | |
3108 | long *adjust; | |
3109 | } opd; | |
7c8fe5c4 | 3110 | |
3a71aa26 AM |
3111 | /* An array for toc sections, indexed by offset/8. */ |
3112 | struct _toc_sec_data | |
3113 | { | |
3114 | /* Specifies the relocation symbol index used at a given toc offset. */ | |
3115 | unsigned *symndx; | |
3116 | ||
3117 | /* And the relocation addend. */ | |
3118 | bfd_vma *add; | |
3119 | } toc; | |
7c8fe5c4 AM |
3120 | } u; |
3121 | ||
3122 | enum _ppc64_sec_type sec_type:2; | |
411e1bfb | 3123 | |
7c8fe5c4 AM |
3124 | /* Flag set when small branches are detected. Used to |
3125 | select suitable defaults for the stub group size. */ | |
3126 | unsigned int has_14bit_branch:1; | |
3e04d765 AM |
3127 | |
3128 | /* Flag set when PLTCALL relocs are detected. */ | |
3129 | unsigned int has_pltcall:1; | |
f0abc2a1 AM |
3130 | }; |
3131 | ||
3132 | #define ppc64_elf_section_data(sec) \ | |
411e1bfb | 3133 | ((struct _ppc64_elf_section_data *) elf_section_data (sec)) |
f0abc2a1 AM |
3134 | |
3135 | static bfd_boolean | |
4ce794b7 | 3136 | ppc64_elf_new_section_hook (bfd *abfd, asection *sec) |
f0abc2a1 | 3137 | { |
f592407e AM |
3138 | if (!sec->used_by_bfd) |
3139 | { | |
3140 | struct _ppc64_elf_section_data *sdata; | |
3141 | bfd_size_type amt = sizeof (*sdata); | |
f0abc2a1 | 3142 | |
f592407e AM |
3143 | sdata = bfd_zalloc (abfd, amt); |
3144 | if (sdata == NULL) | |
3145 | return FALSE; | |
3146 | sec->used_by_bfd = sdata; | |
3147 | } | |
f0abc2a1 AM |
3148 | |
3149 | return _bfd_elf_new_section_hook (abfd, sec); | |
3150 | } | |
4025353c | 3151 | |
74f0fb50 | 3152 | static struct _opd_sec_data * |
4025353c AM |
3153 | get_opd_info (asection * sec) |
3154 | { | |
3155 | if (sec != NULL | |
3156 | && ppc64_elf_section_data (sec) != NULL | |
7c8fe5c4 | 3157 | && ppc64_elf_section_data (sec)->sec_type == sec_opd) |
74f0fb50 | 3158 | return &ppc64_elf_section_data (sec)->u.opd; |
4025353c AM |
3159 | return NULL; |
3160 | } | |
90e3cdf2 JJ |
3161 | \f |
3162 | /* Parameters for the qsort hook. */ | |
90e3cdf2 | 3163 | static bfd_boolean synthetic_relocatable; |
cd285db5 | 3164 | static asection *synthetic_opd; |
90e3cdf2 | 3165 | |
699733f6 | 3166 | /* qsort comparison function for ppc64_elf_get_synthetic_symtab. */ |
90e3cdf2 JJ |
3167 | |
3168 | static int | |
3169 | compare_symbols (const void *ap, const void *bp) | |
3170 | { | |
3171 | const asymbol *a = * (const asymbol **) ap; | |
3172 | const asymbol *b = * (const asymbol **) bp; | |
3173 | ||
699733f6 AM |
3174 | /* Section symbols first. */ |
3175 | if ((a->flags & BSF_SECTION_SYM) && !(b->flags & BSF_SECTION_SYM)) | |
90e3cdf2 | 3176 | return -1; |
699733f6 | 3177 | if (!(a->flags & BSF_SECTION_SYM) && (b->flags & BSF_SECTION_SYM)) |
90e3cdf2 JJ |
3178 | return 1; |
3179 | ||
699733f6 | 3180 | /* then .opd symbols. */ |
cd285db5 AM |
3181 | if (synthetic_opd != NULL) |
3182 | { | |
3183 | if (strcmp (a->section->name, ".opd") == 0 | |
3184 | && strcmp (b->section->name, ".opd") != 0) | |
3185 | return -1; | |
3186 | if (strcmp (a->section->name, ".opd") != 0 | |
3187 | && strcmp (b->section->name, ".opd") == 0) | |
3188 | return 1; | |
3189 | } | |
90e3cdf2 | 3190 | |
699733f6 | 3191 | /* then other code symbols. */ |
90e3cdf2 JJ |
3192 | if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) |
3193 | == (SEC_CODE | SEC_ALLOC) | |
3194 | && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
3195 | != (SEC_CODE | SEC_ALLOC)) | |
3196 | return -1; | |
3197 | ||
3198 | if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
3199 | != (SEC_CODE | SEC_ALLOC) | |
3200 | && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
3201 | == (SEC_CODE | SEC_ALLOC)) | |
3202 | return 1; | |
3203 | ||
3204 | if (synthetic_relocatable) | |
3205 | { | |
3206 | if (a->section->id < b->section->id) | |
3207 | return -1; | |
3208 | ||
3209 | if (a->section->id > b->section->id) | |
3210 | return 1; | |
3211 | } | |
3212 | ||
3213 | if (a->value + a->section->vma < b->value + b->section->vma) | |
3214 | return -1; | |
3215 | ||
3216 | if (a->value + a->section->vma > b->value + b->section->vma) | |
3217 | return 1; | |
3218 | ||
4d35a0aa AM |
3219 | /* For syms with the same value, prefer strong dynamic global function |
3220 | syms over other syms. */ | |
3221 | if ((a->flags & BSF_GLOBAL) != 0 && (b->flags & BSF_GLOBAL) == 0) | |
3222 | return -1; | |
3223 | ||
3224 | if ((a->flags & BSF_GLOBAL) == 0 && (b->flags & BSF_GLOBAL) != 0) | |
3225 | return 1; | |
3226 | ||
3227 | if ((a->flags & BSF_FUNCTION) != 0 && (b->flags & BSF_FUNCTION) == 0) | |
3228 | return -1; | |
3229 | ||
3230 | if ((a->flags & BSF_FUNCTION) == 0 && (b->flags & BSF_FUNCTION) != 0) | |
3231 | return 1; | |
3232 | ||
3233 | if ((a->flags & BSF_WEAK) == 0 && (b->flags & BSF_WEAK) != 0) | |
3234 | return -1; | |
3235 | ||
3236 | if ((a->flags & BSF_WEAK) != 0 && (b->flags & BSF_WEAK) == 0) | |
3237 | return 1; | |
3238 | ||
3239 | if ((a->flags & BSF_DYNAMIC) != 0 && (b->flags & BSF_DYNAMIC) == 0) | |
3240 | return -1; | |
3241 | ||
3242 | if ((a->flags & BSF_DYNAMIC) == 0 && (b->flags & BSF_DYNAMIC) != 0) | |
3243 | return 1; | |
3244 | ||
aaed6f5b | 3245 | return a > b; |
90e3cdf2 JJ |
3246 | } |
3247 | ||
699733f6 | 3248 | /* Search SYMS for a symbol of the given VALUE. */ |
90e3cdf2 | 3249 | |
699733f6 | 3250 | static asymbol * |
7292b3ac | 3251 | sym_exists_at (asymbol **syms, long lo, long hi, unsigned int id, bfd_vma value) |
90e3cdf2 | 3252 | { |
699733f6 | 3253 | long mid; |
90e3cdf2 | 3254 | |
7292b3ac | 3255 | if (id == (unsigned) -1) |
699733f6 AM |
3256 | { |
3257 | while (lo < hi) | |
3258 | { | |
3259 | mid = (lo + hi) >> 1; | |
3260 | if (syms[mid]->value + syms[mid]->section->vma < value) | |
3261 | lo = mid + 1; | |
3262 | else if (syms[mid]->value + syms[mid]->section->vma > value) | |
3263 | hi = mid; | |
3264 | else | |
3265 | return syms[mid]; | |
3266 | } | |
3267 | } | |
3268 | else | |
3269 | { | |
3270 | while (lo < hi) | |
3271 | { | |
3272 | mid = (lo + hi) >> 1; | |
3273 | if (syms[mid]->section->id < id) | |
3274 | lo = mid + 1; | |
3275 | else if (syms[mid]->section->id > id) | |
3276 | hi = mid; | |
3277 | else if (syms[mid]->value < value) | |
3278 | lo = mid + 1; | |
3279 | else if (syms[mid]->value > value) | |
3280 | hi = mid; | |
3281 | else | |
3282 | return syms[mid]; | |
3283 | } | |
3284 | } | |
3285 | return NULL; | |
90e3cdf2 JJ |
3286 | } |
3287 | ||
468392fb AM |
3288 | static bfd_boolean |
3289 | section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr) | |
3290 | { | |
3291 | bfd_vma vma = *(bfd_vma *) ptr; | |
3292 | return ((section->flags & SEC_ALLOC) != 0 | |
3293 | && section->vma <= vma | |
3294 | && vma < section->vma + section->size); | |
3295 | } | |
3296 | ||
699733f6 | 3297 | /* Create synthetic symbols, effectively restoring "dot-symbol" function |
c4b0b099 AM |
3298 | entry syms. Also generate @plt symbols for the glink branch table. |
3299 | Returns count of synthetic symbols in RET or -1 on error. */ | |
90e3cdf2 JJ |
3300 | |
3301 | static long | |
a7535cf3 AM |
3302 | ppc64_elf_get_synthetic_symtab (bfd *abfd, |
3303 | long static_count, asymbol **static_syms, | |
3304 | long dyn_count, asymbol **dyn_syms, | |
c9727e01 | 3305 | asymbol **ret) |
90e3cdf2 JJ |
3306 | { |
3307 | asymbol *s; | |
0ccf57bd | 3308 | size_t i, j, count; |
90e3cdf2 | 3309 | char *names; |
0ccf57bd | 3310 | size_t symcount, codesecsym, codesecsymend, secsymend, opdsymend; |
ee67d69a | 3311 | asection *opd = NULL; |
90e3cdf2 | 3312 | bfd_boolean relocatable = (abfd->flags & (EXEC_P | DYNAMIC)) == 0; |
a7535cf3 | 3313 | asymbol **syms; |
ee67d69a | 3314 | int abi = abiversion (abfd); |
90e3cdf2 JJ |
3315 | |
3316 | *ret = NULL; | |
3317 | ||
ee67d69a AM |
3318 | if (abi < 2) |
3319 | { | |
3320 | opd = bfd_get_section_by_name (abfd, ".opd"); | |
3321 | if (opd == NULL && abi == 1) | |
3322 | return 0; | |
3323 | } | |
90e3cdf2 | 3324 | |
a5259595 AM |
3325 | syms = NULL; |
3326 | codesecsym = 0; | |
3327 | codesecsymend = 0; | |
3328 | secsymend = 0; | |
3329 | opdsymend = 0; | |
3330 | symcount = 0; | |
3331 | if (opd != NULL) | |
c9727e01 | 3332 | { |
a5259595 AM |
3333 | symcount = static_count; |
3334 | if (!relocatable) | |
3335 | symcount += dyn_count; | |
3336 | if (symcount == 0) | |
3337 | return 0; | |
c9727e01 | 3338 | |
a5259595 AM |
3339 | syms = bfd_malloc ((symcount + 1) * sizeof (*syms)); |
3340 | if (syms == NULL) | |
3341 | return -1; | |
90e3cdf2 | 3342 | |
a5259595 AM |
3343 | if (!relocatable && static_count != 0 && dyn_count != 0) |
3344 | { | |
3345 | /* Use both symbol tables. */ | |
3346 | memcpy (syms, static_syms, static_count * sizeof (*syms)); | |
3347 | memcpy (syms + static_count, dyn_syms, | |
3348 | (dyn_count + 1) * sizeof (*syms)); | |
3349 | } | |
3350 | else if (!relocatable && static_count == 0) | |
3351 | memcpy (syms, dyn_syms, (symcount + 1) * sizeof (*syms)); | |
3352 | else | |
3353 | memcpy (syms, static_syms, (symcount + 1) * sizeof (*syms)); | |
90e3cdf2 | 3354 | |
0ccf57bd AM |
3355 | /* Trim uninteresting symbols. Interesting symbols are section, |
3356 | function, and notype symbols. */ | |
3357 | for (i = 0, j = 0; i < symcount; ++i) | |
3358 | if ((syms[i]->flags & (BSF_FILE | BSF_OBJECT | BSF_THREAD_LOCAL | |
3359 | | BSF_RELC | BSF_SRELC)) == 0) | |
3360 | syms[j++] = syms[i]; | |
3361 | symcount = j; | |
3362 | ||
a5259595 AM |
3363 | synthetic_relocatable = relocatable; |
3364 | synthetic_opd = opd; | |
3365 | qsort (syms, symcount, sizeof (*syms), compare_symbols); | |
90e3cdf2 | 3366 | |
a5259595 AM |
3367 | if (!relocatable && symcount > 1) |
3368 | { | |
a5259595 AM |
3369 | /* Trim duplicate syms, since we may have merged the normal and |
3370 | dynamic symbols. Actually, we only care about syms that have | |
3371 | different values, so trim any with the same value. */ | |
3372 | for (i = 1, j = 1; i < symcount; ++i) | |
3373 | if (syms[i - 1]->value + syms[i - 1]->section->vma | |
3374 | != syms[i]->value + syms[i]->section->vma) | |
3375 | syms[j++] = syms[i]; | |
3376 | symcount = j; | |
3377 | } | |
699733f6 | 3378 | |
a5259595 AM |
3379 | i = 0; |
3380 | /* Note that here and in compare_symbols we can't compare opd and | |
3381 | sym->section directly. With separate debug info files, the | |
3382 | symbols will be extracted from the debug file while abfd passed | |
3383 | to this function is the real binary. */ | |
0ccf57bd | 3384 | if (strcmp (syms[i]->section->name, ".opd") == 0) |
a5259595 AM |
3385 | ++i; |
3386 | codesecsym = i; | |
3387 | ||
3388 | for (; i < symcount; ++i) | |
3389 | if (((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | |
3390 | | SEC_THREAD_LOCAL)) | |
3391 | != (SEC_CODE | SEC_ALLOC)) | |
3392 | || (syms[i]->flags & BSF_SECTION_SYM) == 0) | |
3393 | break; | |
3394 | codesecsymend = i; | |
3395 | ||
3396 | for (; i < symcount; ++i) | |
3397 | if ((syms[i]->flags & BSF_SECTION_SYM) == 0) | |
3398 | break; | |
3399 | secsymend = i; | |
3400 | ||
3401 | for (; i < symcount; ++i) | |
3402 | if (strcmp (syms[i]->section->name, ".opd") != 0) | |
3403 | break; | |
3404 | opdsymend = i; | |
3405 | ||
3406 | for (; i < symcount; ++i) | |
3407 | if ((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
3408 | != (SEC_CODE | SEC_ALLOC)) | |
3409 | break; | |
3410 | symcount = i; | |
3411 | } | |
c9727e01 | 3412 | count = 0; |
90e3cdf2 | 3413 | |
699733f6 | 3414 | if (relocatable) |
90e3cdf2 | 3415 | { |
699733f6 AM |
3416 | bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean); |
3417 | arelent *r; | |
3418 | size_t size; | |
0ccf57bd | 3419 | size_t relcount; |
90e3cdf2 | 3420 | |
468392fb AM |
3421 | if (opdsymend == secsymend) |
3422 | goto done; | |
3423 | ||
699733f6 | 3424 | slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; |
90e3cdf2 | 3425 | relcount = (opd->flags & SEC_RELOC) ? opd->reloc_count : 0; |
7356fed5 | 3426 | if (relcount == 0) |
c9727e01 | 3427 | goto done; |
90e3cdf2 | 3428 | |
7356fed5 AM |
3429 | if (!(*slurp_relocs) (abfd, opd, static_syms, FALSE)) |
3430 | { | |
3431 | count = -1; | |
3432 | goto done; | |
3433 | } | |
3434 | ||
699733f6 | 3435 | size = 0; |
595da8c5 | 3436 | for (i = secsymend, r = opd->relocation; i < opdsymend; ++i) |
699733f6 AM |
3437 | { |
3438 | asymbol *sym; | |
90e3cdf2 | 3439 | |
595da8c5 | 3440 | while (r < opd->relocation + relcount |
699733f6 AM |
3441 | && r->address < syms[i]->value + opd->vma) |
3442 | ++r; | |
90e3cdf2 | 3443 | |
595da8c5 | 3444 | if (r == opd->relocation + relcount) |
699733f6 | 3445 | break; |
90e3cdf2 | 3446 | |
699733f6 AM |
3447 | if (r->address != syms[i]->value + opd->vma) |
3448 | continue; | |
90e3cdf2 | 3449 | |
699733f6 AM |
3450 | if (r->howto->type != R_PPC64_ADDR64) |
3451 | continue; | |
90e3cdf2 | 3452 | |
699733f6 AM |
3453 | sym = *r->sym_ptr_ptr; |
3454 | if (!sym_exists_at (syms, opdsymend, symcount, | |
3455 | sym->section->id, sym->value + r->addend)) | |
3456 | { | |
3457 | ++count; | |
3458 | size += sizeof (asymbol); | |
3459 | size += strlen (syms[i]->name) + 2; | |
3460 | } | |
3461 | } | |
90e3cdf2 | 3462 | |
c4b0b099 AM |
3463 | if (size == 0) |
3464 | goto done; | |
699733f6 AM |
3465 | s = *ret = bfd_malloc (size); |
3466 | if (s == NULL) | |
3467 | { | |
7356fed5 | 3468 | count = -1; |
c9727e01 | 3469 | goto done; |
699733f6 | 3470 | } |
90e3cdf2 | 3471 | |
699733f6 | 3472 | names = (char *) (s + count); |
90e3cdf2 | 3473 | |
595da8c5 | 3474 | for (i = secsymend, r = opd->relocation; i < opdsymend; ++i) |
90e3cdf2 | 3475 | { |
699733f6 | 3476 | asymbol *sym; |
90e3cdf2 | 3477 | |
595da8c5 | 3478 | while (r < opd->relocation + relcount |
699733f6 AM |
3479 | && r->address < syms[i]->value + opd->vma) |
3480 | ++r; | |
90e3cdf2 | 3481 | |
595da8c5 | 3482 | if (r == opd->relocation + relcount) |
699733f6 AM |
3483 | break; |
3484 | ||
3485 | if (r->address != syms[i]->value + opd->vma) | |
3486 | continue; | |
3487 | ||
3488 | if (r->howto->type != R_PPC64_ADDR64) | |
3489 | continue; | |
90e3cdf2 | 3490 | |
699733f6 AM |
3491 | sym = *r->sym_ptr_ptr; |
3492 | if (!sym_exists_at (syms, opdsymend, symcount, | |
3493 | sym->section->id, sym->value + r->addend)) | |
3494 | { | |
3495 | size_t len; | |
3496 | ||
3497 | *s = *syms[i]; | |
6ba2a415 | 3498 | s->flags |= BSF_SYNTHETIC; |
699733f6 AM |
3499 | s->section = sym->section; |
3500 | s->value = sym->value + r->addend; | |
3501 | s->name = names; | |
3502 | *names++ = '.'; | |
3503 | len = strlen (syms[i]->name); | |
3504 | memcpy (names, syms[i]->name, len + 1); | |
3505 | names += len + 1; | |
6f610d07 UW |
3506 | /* Have udata.p point back to the original symbol this |
3507 | synthetic symbol was derived from. */ | |
3508 | s->udata.p = syms[i]; | |
699733f6 AM |
3509 | s++; |
3510 | } | |
3511 | } | |
3512 | } | |
3513 | else | |
90e3cdf2 | 3514 | { |
468392fb | 3515 | bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean); |
ee67d69a | 3516 | bfd_byte *contents = NULL; |
699733f6 | 3517 | size_t size; |
0ccf57bd | 3518 | size_t plt_count = 0; |
468392fb AM |
3519 | bfd_vma glink_vma = 0, resolv_vma = 0; |
3520 | asection *dynamic, *glink = NULL, *relplt = NULL; | |
3521 | arelent *p; | |
90e3cdf2 | 3522 | |
ee67d69a | 3523 | if (opd != NULL && !bfd_malloc_and_get_section (abfd, opd, &contents)) |
699733f6 | 3524 | { |
c4b0b099 AM |
3525 | free_contents_and_exit_err: |
3526 | count = -1; | |
ee67d69a | 3527 | free_contents_and_exit: |
699733f6 | 3528 | if (contents) |
ee67d69a | 3529 | free (contents); |
c9727e01 | 3530 | goto done; |
699733f6 | 3531 | } |
90e3cdf2 | 3532 | |
699733f6 AM |
3533 | size = 0; |
3534 | for (i = secsymend; i < opdsymend; ++i) | |
3535 | { | |
3536 | bfd_vma ent; | |
90e3cdf2 | 3537 | |
5ef11c02 AM |
3538 | /* Ignore bogus symbols. */ |
3539 | if (syms[i]->value > opd->size - 8) | |
3540 | continue; | |
3541 | ||
699733f6 AM |
3542 | ent = bfd_get_64 (abfd, contents + syms[i]->value); |
3543 | if (!sym_exists_at (syms, opdsymend, symcount, -1, ent)) | |
3544 | { | |
3545 | ++count; | |
3546 | size += sizeof (asymbol); | |
3547 | size += strlen (syms[i]->name) + 2; | |
3548 | } | |
3549 | } | |
90e3cdf2 | 3550 | |
468392fb | 3551 | /* Get start of .glink stubs from DT_PPC64_GLINK. */ |
066ee829 AM |
3552 | if (dyn_count != 0 |
3553 | && (dynamic = bfd_get_section_by_name (abfd, ".dynamic")) != NULL) | |
468392fb AM |
3554 | { |
3555 | bfd_byte *dynbuf, *extdyn, *extdynend; | |
3556 | size_t extdynsize; | |
3557 | void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *); | |
3558 | ||
3559 | if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf)) | |
c4b0b099 | 3560 | goto free_contents_and_exit_err; |
468392fb AM |
3561 | |
3562 | extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn; | |
3563 | swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in; | |
3564 | ||
3565 | extdyn = dynbuf; | |
3566 | extdynend = extdyn + dynamic->size; | |
3567 | for (; extdyn < extdynend; extdyn += extdynsize) | |
3568 | { | |
3569 | Elf_Internal_Dyn dyn; | |
3570 | (*swap_dyn_in) (abfd, extdyn, &dyn); | |
3571 | ||
3572 | if (dyn.d_tag == DT_NULL) | |
3573 | break; | |
3574 | ||
3575 | if (dyn.d_tag == DT_PPC64_GLINK) | |
3576 | { | |
9e390558 AM |
3577 | /* The first glink stub starts at DT_PPC64_GLINK plus 32. |
3578 | See comment in ppc64_elf_finish_dynamic_sections. */ | |
3579 | glink_vma = dyn.d_un.d_val + 8 * 4; | |
468392fb AM |
3580 | /* The .glink section usually does not survive the final |
3581 | link; search for the section (usually .text) where the | |
3582 | glink stubs now reside. */ | |
3583 | glink = bfd_sections_find_if (abfd, section_covers_vma, | |
3584 | &glink_vma); | |
3585 | break; | |
3586 | } | |
3587 | } | |
3588 | ||
3589 | free (dynbuf); | |
3590 | } | |
3591 | ||
3592 | if (glink != NULL) | |
3593 | { | |
3594 | /* Determine __glink trampoline by reading the relative branch | |
3595 | from the first glink stub. */ | |
3596 | bfd_byte buf[4]; | |
b9e5796b AM |
3597 | unsigned int off = 0; |
3598 | ||
3599 | while (bfd_get_section_contents (abfd, glink, buf, | |
3600 | glink_vma + off - glink->vma, 4)) | |
468392fb AM |
3601 | { |
3602 | unsigned int insn = bfd_get_32 (abfd, buf); | |
3603 | insn ^= B_DOT; | |
3604 | if ((insn & ~0x3fffffc) == 0) | |
b9e5796b AM |
3605 | { |
3606 | resolv_vma = glink_vma + off + (insn ^ 0x2000000) - 0x2000000; | |
3607 | break; | |
3608 | } | |
3609 | off += 4; | |
3610 | if (off > 4) | |
3611 | break; | |
468392fb AM |
3612 | } |
3613 | ||
3614 | if (resolv_vma) | |
3615 | size += sizeof (asymbol) + sizeof ("__glink_PLTresolve"); | |
468392fb | 3616 | |
066ee829 AM |
3617 | relplt = bfd_get_section_by_name (abfd, ".rela.plt"); |
3618 | if (relplt != NULL) | |
3619 | { | |
3620 | slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; | |
3621 | if (! (*slurp_relocs) (abfd, relplt, dyn_syms, TRUE)) | |
c4b0b099 | 3622 | goto free_contents_and_exit_err; |
68ffbac6 | 3623 | |
066ee829 AM |
3624 | plt_count = relplt->size / sizeof (Elf64_External_Rela); |
3625 | size += plt_count * sizeof (asymbol); | |
468392fb | 3626 | |
066ee829 AM |
3627 | p = relplt->relocation; |
3628 | for (i = 0; i < plt_count; i++, p++) | |
e054468f AM |
3629 | { |
3630 | size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt"); | |
3631 | if (p->addend != 0) | |
3632 | size += sizeof ("+0x") - 1 + 16; | |
3633 | } | |
066ee829 | 3634 | } |
468392fb AM |
3635 | } |
3636 | ||
c4b0b099 AM |
3637 | if (size == 0) |
3638 | goto free_contents_and_exit; | |
699733f6 AM |
3639 | s = *ret = bfd_malloc (size); |
3640 | if (s == NULL) | |
c4b0b099 | 3641 | goto free_contents_and_exit_err; |
90e3cdf2 | 3642 | |
468392fb | 3643 | names = (char *) (s + count + plt_count + (resolv_vma != 0)); |
90e3cdf2 | 3644 | |
699733f6 | 3645 | for (i = secsymend; i < opdsymend; ++i) |
90e3cdf2 | 3646 | { |
699733f6 | 3647 | bfd_vma ent; |
90e3cdf2 | 3648 | |
5ef11c02 AM |
3649 | if (syms[i]->value > opd->size - 8) |
3650 | continue; | |
3651 | ||
699733f6 AM |
3652 | ent = bfd_get_64 (abfd, contents + syms[i]->value); |
3653 | if (!sym_exists_at (syms, opdsymend, symcount, -1, ent)) | |
90e3cdf2 | 3654 | { |
0ccf57bd | 3655 | size_t lo, hi; |
699733f6 | 3656 | size_t len; |
c9727e01 | 3657 | asection *sec = abfd->sections; |
90e3cdf2 | 3658 | |
699733f6 AM |
3659 | *s = *syms[i]; |
3660 | lo = codesecsym; | |
3661 | hi = codesecsymend; | |
3662 | while (lo < hi) | |
3663 | { | |
0ccf57bd | 3664 | size_t mid = (lo + hi) >> 1; |
699733f6 AM |
3665 | if (syms[mid]->section->vma < ent) |
3666 | lo = mid + 1; | |
3667 | else if (syms[mid]->section->vma > ent) | |
3668 | hi = mid; | |
3669 | else | |
c9727e01 AM |
3670 | { |
3671 | sec = syms[mid]->section; | |
3672 | break; | |
3673 | } | |
699733f6 AM |
3674 | } |
3675 | ||
c9727e01 | 3676 | if (lo >= hi && lo > codesecsym) |
699733f6 | 3677 | sec = syms[lo - 1]->section; |
699733f6 AM |
3678 | |
3679 | for (; sec != NULL; sec = sec->next) | |
3680 | { | |
3681 | if (sec->vma > ent) | |
3682 | break; | |
63524580 JK |
3683 | /* SEC_LOAD may not be set if SEC is from a separate debug |
3684 | info file. */ | |
3685 | if ((sec->flags & SEC_ALLOC) == 0) | |
699733f6 AM |
3686 | break; |
3687 | if ((sec->flags & SEC_CODE) != 0) | |
3688 | s->section = sec; | |
3689 | } | |
6ba2a415 | 3690 | s->flags |= BSF_SYNTHETIC; |
699733f6 AM |
3691 | s->value = ent - s->section->vma; |
3692 | s->name = names; | |
3693 | *names++ = '.'; | |
3694 | len = strlen (syms[i]->name); | |
3695 | memcpy (names, syms[i]->name, len + 1); | |
3696 | names += len + 1; | |
6f610d07 UW |
3697 | /* Have udata.p point back to the original symbol this |
3698 | synthetic symbol was derived from. */ | |
3699 | s->udata.p = syms[i]; | |
699733f6 | 3700 | s++; |
90e3cdf2 | 3701 | } |
90e3cdf2 | 3702 | } |
699733f6 | 3703 | free (contents); |
468392fb AM |
3704 | |
3705 | if (glink != NULL && relplt != NULL) | |
3706 | { | |
3707 | if (resolv_vma) | |
3708 | { | |
3709 | /* Add a symbol for the main glink trampoline. */ | |
86a4952b | 3710 | memset (s, 0, sizeof *s); |
468392fb | 3711 | s->the_bfd = abfd; |
6ba2a415 | 3712 | s->flags = BSF_GLOBAL | BSF_SYNTHETIC; |
468392fb AM |
3713 | s->section = glink; |
3714 | s->value = resolv_vma - glink->vma; | |
3715 | s->name = names; | |
3716 | memcpy (names, "__glink_PLTresolve", sizeof ("__glink_PLTresolve")); | |
3717 | names += sizeof ("__glink_PLTresolve"); | |
3718 | s++; | |
3719 | count++; | |
3720 | } | |
3721 | ||
3722 | /* FIXME: It would be very much nicer to put sym@plt on the | |
3723 | stub rather than on the glink branch table entry. The | |
3724 | objdump disassembler would then use a sensible symbol | |
3725 | name on plt calls. The difficulty in doing so is | |
3726 | a) finding the stubs, and, | |
3727 | b) matching stubs against plt entries, and, | |
3728 | c) there can be multiple stubs for a given plt entry. | |
3729 | ||
3730 | Solving (a) could be done by code scanning, but older | |
3731 | ppc64 binaries used different stubs to current code. | |
3732 | (b) is the tricky one since you need to known the toc | |
3733 | pointer for at least one function that uses a pic stub to | |
3734 | be able to calculate the plt address referenced. | |
3735 | (c) means gdb would need to set multiple breakpoints (or | |
3736 | find the glink branch itself) when setting breakpoints | |
3737 | for pending shared library loads. */ | |
3738 | p = relplt->relocation; | |
3739 | for (i = 0; i < plt_count; i++, p++) | |
3740 | { | |
3741 | size_t len; | |
3742 | ||
3743 | *s = **p->sym_ptr_ptr; | |
3744 | /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since | |
3745 | we are defining a symbol, ensure one of them is set. */ | |
3746 | if ((s->flags & BSF_LOCAL) == 0) | |
3747 | s->flags |= BSF_GLOBAL; | |
6ba2a415 | 3748 | s->flags |= BSF_SYNTHETIC; |
468392fb AM |
3749 | s->section = glink; |
3750 | s->value = glink_vma - glink->vma; | |
3751 | s->name = names; | |
3752 | s->udata.p = NULL; | |
3753 | len = strlen ((*p->sym_ptr_ptr)->name); | |
3754 | memcpy (names, (*p->sym_ptr_ptr)->name, len); | |
3755 | names += len; | |
e054468f AM |
3756 | if (p->addend != 0) |
3757 | { | |
3758 | memcpy (names, "+0x", sizeof ("+0x") - 1); | |
3759 | names += sizeof ("+0x") - 1; | |
3760 | bfd_sprintf_vma (abfd, names, p->addend); | |
3761 | names += strlen (names); | |
3762 | } | |
468392fb AM |
3763 | memcpy (names, "@plt", sizeof ("@plt")); |
3764 | names += sizeof ("@plt"); | |
3765 | s++; | |
b9e5796b AM |
3766 | if (abi < 2) |
3767 | { | |
3768 | glink_vma += 8; | |
3769 | if (i >= 0x8000) | |
3770 | glink_vma += 4; | |
3771 | } | |
3772 | else | |
468392fb AM |
3773 | glink_vma += 4; |
3774 | } | |
3775 | count += plt_count; | |
3776 | } | |
90e3cdf2 JJ |
3777 | } |
3778 | ||
c9727e01 | 3779 | done: |
a7535cf3 | 3780 | free (syms); |
90e3cdf2 JJ |
3781 | return count; |
3782 | } | |
5bd4f169 | 3783 | \f |
65f38f15 AM |
3784 | /* The following functions are specific to the ELF linker, while |
3785 | functions above are used generally. Those named ppc64_elf_* are | |
3786 | called by the main ELF linker code. They appear in this file more | |
3787 | or less in the order in which they are called. eg. | |
3788 | ppc64_elf_check_relocs is called early in the link process, | |
3789 | ppc64_elf_finish_dynamic_sections is one of the last functions | |
e86ce104 AM |
3790 | called. |
3791 | ||
3792 | PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that | |
3793 | functions have both a function code symbol and a function descriptor | |
3794 | symbol. A call to foo in a relocatable object file looks like: | |
3795 | ||
3796 | . .text | |
3797 | . x: | |
3798 | . bl .foo | |
3799 | . nop | |
3800 | ||
3801 | The function definition in another object file might be: | |
3802 | ||
3803 | . .section .opd | |
3804 | . foo: .quad .foo | |
3805 | . .quad .TOC.@tocbase | |
3806 | . .quad 0 | |
3807 | . | |
3808 | . .text | |
3809 | . .foo: blr | |
3810 | ||
3811 | When the linker resolves the call during a static link, the branch | |
3812 | unsurprisingly just goes to .foo and the .opd information is unused. | |
3813 | If the function definition is in a shared library, things are a little | |
3814 | different: The call goes via a plt call stub, the opd information gets | |
3815 | copied to the plt, and the linker patches the nop. | |
3816 | ||
3817 | . x: | |
3818 | . bl .foo_stub | |
3819 | . ld 2,40(1) | |
3820 | . | |
3821 | . | |
3822 | . .foo_stub: | |
71a39c98 AM |
3823 | . std 2,40(1) # in practice, the call stub |
3824 | . addis 11,2,Lfoo@toc@ha # is slightly optimized, but | |
3825 | . addi 11,11,Lfoo@toc@l # this is the general idea | |
3826 | . ld 12,0(11) | |
3827 | . ld 2,8(11) | |
3828 | . mtctr 12 | |
3829 | . ld 11,16(11) | |
e86ce104 AM |
3830 | . bctr |
3831 | . | |
3832 | . .section .plt | |
3833 | . Lfoo: reloc (R_PPC64_JMP_SLOT, foo) | |
3834 | ||
3835 | The "reloc ()" notation is supposed to indicate that the linker emits | |
3836 | an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd | |
3837 | copying. | |
3838 | ||
3839 | What are the difficulties here? Well, firstly, the relocations | |
3840 | examined by the linker in check_relocs are against the function code | |
3841 | sym .foo, while the dynamic relocation in the plt is emitted against | |
3842 | the function descriptor symbol, foo. Somewhere along the line, we need | |
3843 | to carefully copy dynamic link information from one symbol to the other. | |
3844 | Secondly, the generic part of the elf linker will make .foo a dynamic | |
3845 | symbol as is normal for most other backends. We need foo dynamic | |
3846 | instead, at least for an application final link. However, when | |
3847 | creating a shared library containing foo, we need to have both symbols | |
3848 | dynamic so that references to .foo are satisfied during the early | |
3849 | stages of linking. Otherwise the linker might decide to pull in a | |
8387904d AM |
3850 | definition from some other object, eg. a static library. |
3851 | ||
3852 | Update: As of August 2004, we support a new convention. Function | |
3853 | calls may use the function descriptor symbol, ie. "bl foo". This | |
3854 | behaves exactly as "bl .foo". */ | |
65f38f15 | 3855 | |
7c8bbca5 AM |
3856 | /* Of those relocs that might be copied as dynamic relocs, this |
3857 | function selects those that must be copied when linking a shared | |
3858 | library or PIE, even when the symbol is local. */ | |
65f38f15 | 3859 | |
1d483afe AM |
3860 | static int |
3861 | must_be_dyn_reloc (struct bfd_link_info *info, | |
3862 | enum elf_ppc64_reloc_type r_type) | |
3863 | { | |
3864 | switch (r_type) | |
3865 | { | |
3866 | default: | |
7c8bbca5 AM |
3867 | /* Only relative relocs can be resolved when the object load |
3868 | address isn't fixed. DTPREL64 is excluded because the | |
3869 | dynamic linker needs to differentiate global dynamic from | |
3870 | local dynamic __tls_index pairs when PPC64_OPT_TLS is set. */ | |
1d483afe AM |
3871 | return 1; |
3872 | ||
3873 | case R_PPC64_REL32: | |
3874 | case R_PPC64_REL64: | |
3875 | case R_PPC64_REL30: | |
3876 | return 0; | |
3877 | ||
3878 | case R_PPC64_TPREL16: | |
3879 | case R_PPC64_TPREL16_LO: | |
3880 | case R_PPC64_TPREL16_HI: | |
3881 | case R_PPC64_TPREL16_HA: | |
3882 | case R_PPC64_TPREL16_DS: | |
3883 | case R_PPC64_TPREL16_LO_DS: | |
f9c6b907 AM |
3884 | case R_PPC64_TPREL16_HIGH: |
3885 | case R_PPC64_TPREL16_HIGHA: | |
1d483afe AM |
3886 | case R_PPC64_TPREL16_HIGHER: |
3887 | case R_PPC64_TPREL16_HIGHERA: | |
3888 | case R_PPC64_TPREL16_HIGHEST: | |
3889 | case R_PPC64_TPREL16_HIGHESTA: | |
3890 | case R_PPC64_TPREL64: | |
7c8bbca5 AM |
3891 | /* These relocations are relative but in a shared library the |
3892 | linker doesn't know the thread pointer base. */ | |
3893 | return bfd_link_dll (info); | |
1d483afe AM |
3894 | } |
3895 | } | |
65f38f15 | 3896 | |
f4656909 AM |
3897 | /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid |
3898 | copying dynamic variables from a shared lib into an app's dynbss | |
3899 | section, and instead use a dynamic relocation to point into the | |
5d35169e AM |
3900 | shared lib. With code that gcc generates, it's vital that this be |
3901 | enabled; In the PowerPC64 ABI, the address of a function is actually | |
3902 | the address of a function descriptor, which resides in the .opd | |
3903 | section. gcc uses the descriptor directly rather than going via the | |
3904 | GOT as some other ABI's do, which means that initialized function | |
3905 | pointers must reference the descriptor. Thus, a function pointer | |
3906 | initialized to the address of a function in a shared library will | |
3907 | either require a copy reloc, or a dynamic reloc. Using a copy reloc | |
4cc11e76 | 3908 | redefines the function descriptor symbol to point to the copy. This |
5d35169e AM |
3909 | presents a problem as a plt entry for that function is also |
3910 | initialized from the function descriptor symbol and the copy reloc | |
3911 | may not be initialized first. */ | |
a23b6845 | 3912 | #define ELIMINATE_COPY_RELOCS 1 |
f4656909 | 3913 | |
721956f4 | 3914 | /* Section name for stubs is the associated section name plus this |
29942be8 NC |
3915 | string. */ |
3916 | #define STUB_SUFFIX ".stub" | |
721956f4 AM |
3917 | |
3918 | /* Linker stubs. | |
3919 | ppc_stub_long_branch: | |
3920 | Used when a 14 bit branch (or even a 24 bit branch) can't reach its | |
3921 | destination, but a 24 bit branch in a stub section will reach. | |
3922 | . b dest | |
3923 | ||
3924 | ppc_stub_plt_branch: | |
3925 | Similar to the above, but a 24 bit branch in the stub section won't | |
3926 | reach its destination. | |
71a39c98 AM |
3927 | . addis %r11,%r2,xxx@toc@ha |
3928 | . ld %r12,xxx@toc@l(%r11) | |
3929 | . mtctr %r12 | |
721956f4 AM |
3930 | . bctr |
3931 | ||
3932 | ppc_stub_plt_call: | |
2c66dc6c AM |
3933 | Used to call a function in a shared library. If it so happens that |
3934 | the plt entry referenced crosses a 64k boundary, then an extra | |
71a39c98 | 3935 | "addi %r11,%r11,xxx@toc@l" will be inserted before the "mtctr". |
721956f4 | 3936 | . std %r2,40(%r1) |
71a39c98 AM |
3937 | . addis %r11,%r2,xxx@toc@ha |
3938 | . ld %r12,xxx+0@toc@l(%r11) | |
3939 | . mtctr %r12 | |
3940 | . ld %r2,xxx+8@toc@l(%r11) | |
3941 | . ld %r11,xxx+16@toc@l(%r11) | |
721956f4 | 3942 | . bctr |
ad8e1ba5 AM |
3943 | |
3944 | ppc_stub_long_branch and ppc_stub_plt_branch may also have additional | |
3945 | code to adjust the value and save r2 to support multiple toc sections. | |
3946 | A ppc_stub_long_branch with an r2 offset looks like: | |
3947 | . std %r2,40(%r1) | |
3948 | . addis %r2,%r2,off@ha | |
3949 | . addi %r2,%r2,off@l | |
3950 | . b dest | |
3951 | ||
3952 | A ppc_stub_plt_branch with an r2 offset looks like: | |
3953 | . std %r2,40(%r1) | |
71a39c98 AM |
3954 | . addis %r11,%r2,xxx@toc@ha |
3955 | . ld %r12,xxx@toc@l(%r11) | |
ad8e1ba5 AM |
3956 | . addis %r2,%r2,off@ha |
3957 | . addi %r2,%r2,off@l | |
71a39c98 | 3958 | . mtctr %r12 |
ad8e1ba5 | 3959 | . bctr |
ac2df442 AM |
3960 | |
3961 | In cases where the "addis" instruction would add zero, the "addis" is | |
3962 | omitted and following instructions modified slightly in some cases. | |
721956f4 AM |
3963 | */ |
3964 | ||
3965 | enum ppc_stub_type { | |
3966 | ppc_stub_none, | |
3967 | ppc_stub_long_branch, | |
ad8e1ba5 | 3968 | ppc_stub_long_branch_r2off, |
721956f4 | 3969 | ppc_stub_plt_branch, |
ad8e1ba5 | 3970 | ppc_stub_plt_branch_r2off, |
794e51c0 | 3971 | ppc_stub_plt_call, |
7341d5e2 | 3972 | ppc_stub_plt_call_r2save, |
a4b6fadd AM |
3973 | ppc_stub_global_entry, |
3974 | ppc_stub_save_res | |
721956f4 AM |
3975 | }; |
3976 | ||
6f20ed8a AM |
3977 | /* Information on stub grouping. */ |
3978 | struct map_stub | |
3979 | { | |
3980 | /* The stub section. */ | |
3981 | asection *stub_sec; | |
3982 | /* This is the section to which stubs in the group will be attached. */ | |
3983 | asection *link_sec; | |
a4b6fadd AM |
3984 | /* Next group. */ |
3985 | struct map_stub *next; | |
3986 | /* Whether to emit a copy of register save/restore functions in this | |
3987 | group. */ | |
3988 | int needs_save_res; | |
d4aaa2a0 AM |
3989 | /* The offset of the __tls_get_addr_opt plt stub bctrl in this group, |
3990 | or -1u if no such stub with bctrl exists. */ | |
3991 | unsigned int tls_get_addr_opt_bctrl; | |
6f20ed8a AM |
3992 | }; |
3993 | ||
721956f4 AM |
3994 | struct ppc_stub_hash_entry { |
3995 | ||
3996 | /* Base hash table entry structure. */ | |
3997 | struct bfd_hash_entry root; | |
3998 | ||
ad8e1ba5 AM |
3999 | enum ppc_stub_type stub_type; |
4000 | ||
6f20ed8a AM |
4001 | /* Group information. */ |
4002 | struct map_stub *group; | |
721956f4 AM |
4003 | |
4004 | /* Offset within stub_sec of the beginning of this stub. */ | |
4005 | bfd_vma stub_offset; | |
4006 | ||
4007 | /* Given the symbol's value and its section we can determine its final | |
4008 | value when building the stubs (so the stub knows where to jump. */ | |
4009 | bfd_vma target_value; | |
4010 | asection *target_section; | |
4011 | ||
721956f4 AM |
4012 | /* The symbol table entry, if any, that this was derived from. */ |
4013 | struct ppc_link_hash_entry *h; | |
e054468f | 4014 | struct plt_entry *plt_ent; |
721956f4 | 4015 | |
2d7ad24e AM |
4016 | /* Symbol type. */ |
4017 | unsigned char symtype; | |
4018 | ||
6911b7dc AM |
4019 | /* Symbol st_other. */ |
4020 | unsigned char other; | |
721956f4 AM |
4021 | }; |
4022 | ||
4023 | struct ppc_branch_hash_entry { | |
4024 | ||
4025 | /* Base hash table entry structure. */ | |
4026 | struct bfd_hash_entry root; | |
4027 | ||
c456f082 | 4028 | /* Offset within branch lookup table. */ |
721956f4 AM |
4029 | unsigned int offset; |
4030 | ||
4031 | /* Generation marker. */ | |
4032 | unsigned int iter; | |
4033 | }; | |
65f38f15 | 4034 | |
19e08130 AM |
4035 | /* Used to track dynamic relocations for local symbols. */ |
4036 | struct ppc_dyn_relocs | |
4037 | { | |
4038 | struct ppc_dyn_relocs *next; | |
4039 | ||
4040 | /* The input section of the reloc. */ | |
4041 | asection *sec; | |
4042 | ||
4043 | /* Total number of relocs copied for the input section. */ | |
4044 | unsigned int count : 31; | |
4045 | ||
4046 | /* Whether this entry is for STT_GNU_IFUNC symbols. */ | |
4047 | unsigned int ifunc : 1; | |
4048 | }; | |
4049 | ||
65f38f15 AM |
4050 | struct ppc_link_hash_entry |
4051 | { | |
4052 | struct elf_link_hash_entry elf; | |
4053 | ||
b3fac117 AM |
4054 | union { |
4055 | /* A pointer to the most recently used stub hash entry against this | |
4056 | symbol. */ | |
4057 | struct ppc_stub_hash_entry *stub_cache; | |
4058 | ||
4059 | /* A pointer to the next symbol starting with a '.' */ | |
4060 | struct ppc_link_hash_entry *next_dot_sym; | |
4061 | } u; | |
721956f4 | 4062 | |
65f38f15 | 4063 | /* Track dynamic relocs copied for this symbol. */ |
6061a67d | 4064 | struct elf_dyn_relocs *dyn_relocs; |
e86ce104 | 4065 | |
721956f4 | 4066 | /* Link between function code and descriptor symbols. */ |
34814b9f | 4067 | struct ppc_link_hash_entry *oh; |
721956f4 | 4068 | |
e86ce104 AM |
4069 | /* Flag function code and descriptor symbols. */ |
4070 | unsigned int is_func:1; | |
4071 | unsigned int is_func_descriptor:1; | |
908b32fc | 4072 | unsigned int fake:1; |
411e1bfb | 4073 | |
c5614fa4 AM |
4074 | /* Whether global opd/toc sym has been adjusted or not. |
4075 | After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag | |
4076 | should be set for all globals defined in any opd/toc section. */ | |
754021d0 AM |
4077 | unsigned int adjust_done:1; |
4078 | ||
a4b6fadd AM |
4079 | /* Set if this is an out-of-line register save/restore function, |
4080 | with non-standard calling convention. */ | |
4081 | unsigned int save_res:1; | |
4082 | ||
8b5f1ed8 AM |
4083 | /* Set if a duplicate symbol with non-zero localentry is detected, |
4084 | even when the duplicate symbol does not provide a definition. */ | |
4085 | unsigned int non_zero_localentry:1; | |
4086 | ||
411e1bfb | 4087 | /* Contexts in which symbol is used in the GOT (or TOC). |
37da22e5 AM |
4088 | Bits are or'd into the mask as the corresponding relocs are |
4089 | encountered during check_relocs, with TLS_TLS being set when any | |
4090 | of the other TLS bits are set. tls_optimize clears bits when | |
4091 | optimizing to indicate the corresponding GOT entry type is not | |
4092 | needed. If set, TLS_TLS is never cleared. tls_optimize may also | |
4093 | set TLS_TPRELGD when a GD reloc turns into a TPREL one. We use a | |
4094 | separate flag rather than setting TPREL just for convenience in | |
4095 | distinguishing the two cases. | |
4096 | These flags are also kept for local symbols. */ | |
4097 | #define TLS_TLS 1 /* Any TLS reloc. */ | |
4098 | #define TLS_GD 2 /* GD reloc. */ | |
4099 | #define TLS_LD 4 /* LD reloc. */ | |
4100 | #define TLS_TPREL 8 /* TPREL reloc, => IE. */ | |
4101 | #define TLS_DTPREL 16 /* DTPREL reloc, => LD. */ | |
4102 | #define TLS_MARK 32 /* __tls_get_addr call marked. */ | |
e7b938ca | 4103 | #define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */ |
37da22e5 | 4104 | #define TLS_EXPLICIT 128 /* Marks TOC section TLS relocs. */ |
f961d9dd | 4105 | unsigned char tls_mask; |
37da22e5 AM |
4106 | |
4107 | /* The above field is also used to mark function symbols. In which | |
4108 | case TLS_TLS will be 0. */ | |
4109 | #define PLT_IFUNC 2 /* STT_GNU_IFUNC. */ | |
2d7ad24e | 4110 | #define PLT_KEEP 4 /* inline plt call requires plt entry. */ |
37da22e5 | 4111 | #define NON_GOT 256 /* local symbol plt, not stored. */ |
65f38f15 AM |
4112 | }; |
4113 | ||
4114 | /* ppc64 ELF linker hash table. */ | |
4115 | ||
4116 | struct ppc_link_hash_table | |
4117 | { | |
4118 | struct elf_link_hash_table elf; | |
4119 | ||
721956f4 AM |
4120 | /* The stub hash table. */ |
4121 | struct bfd_hash_table stub_hash_table; | |
4122 | ||
4123 | /* Another hash table for plt_branch stubs. */ | |
4124 | struct bfd_hash_table branch_hash_table; | |
4125 | ||
3b421ab3 AM |
4126 | /* Hash table for function prologue tocsave. */ |
4127 | htab_t tocsave_htab; | |
4128 | ||
e7d1c40c AM |
4129 | /* Various options and other info passed from the linker. */ |
4130 | struct ppc64_elf_params *params; | |
721956f4 | 4131 | |
6f20ed8a AM |
4132 | /* The size of sec_info below. */ |
4133 | unsigned int sec_info_arr_size; | |
4134 | ||
4135 | /* Per-section array of extra section info. Done this way rather | |
4136 | than as part of ppc64_elf_section_data so we have the info for | |
4137 | non-ppc64 sections. */ | |
4138 | struct | |
4139 | { | |
4140 | /* Along with elf_gp, specifies the TOC pointer used by this section. */ | |
ad8e1ba5 | 4141 | bfd_vma toc_off; |
6f20ed8a AM |
4142 | |
4143 | union | |
4144 | { | |
4145 | /* The section group that this section belongs to. */ | |
4146 | struct map_stub *group; | |
4147 | /* A temp section list pointer. */ | |
4148 | asection *list; | |
4149 | } u; | |
4150 | } *sec_info; | |
721956f4 | 4151 | |
a4b6fadd AM |
4152 | /* Linked list of groups. */ |
4153 | struct map_stub *group; | |
4154 | ||
ad8e1ba5 AM |
4155 | /* Temp used when calculating TOC pointers. */ |
4156 | bfd_vma toc_curr; | |
bf102f86 AM |
4157 | bfd *toc_bfd; |
4158 | asection *toc_first_sec; | |
ad8e1ba5 | 4159 | |
b3fac117 AM |
4160 | /* Used when adding symbols. */ |
4161 | struct ppc_link_hash_entry *dot_syms; | |
4162 | ||
33e44f2e | 4163 | /* Shortcuts to get to dynamic linker sections. */ |
4ce794b7 | 4164 | asection *glink; |
9e390558 | 4165 | asection *global_entry; |
82bd7b59 | 4166 | asection *sfpr; |
2d7ad24e AM |
4167 | asection *pltlocal; |
4168 | asection *relpltlocal; | |
4ce794b7 AM |
4169 | asection *brlt; |
4170 | asection *relbrlt; | |
58d180e8 | 4171 | asection *glink_eh_frame; |
ec338859 | 4172 | |
8387904d AM |
4173 | /* Shortcut to .__tls_get_addr and __tls_get_addr. */ |
4174 | struct ppc_link_hash_entry *tls_get_addr; | |
4175 | struct ppc_link_hash_entry *tls_get_addr_fd; | |
411e1bfb | 4176 | |
927be08e AM |
4177 | /* The size of reliplt used by got entry relocs. */ |
4178 | bfd_size_type got_reli_size; | |
4179 | ||
9b5ecbd0 | 4180 | /* Statistics. */ |
7341d5e2 | 4181 | unsigned long stub_count[ppc_stub_global_entry]; |
9b5ecbd0 | 4182 | |
ee75fd95 AM |
4183 | /* Number of stubs against global syms. */ |
4184 | unsigned long stub_globals; | |
4185 | ||
ee67d69a AM |
4186 | /* Set if we're linking code with function descriptors. */ |
4187 | unsigned int opd_abi:1; | |
4188 | ||
4c52953f | 4189 | /* Support for multiple toc sections. */ |
33c0ec9d | 4190 | unsigned int do_multi_toc:1; |
4c52953f | 4191 | unsigned int multi_toc_needed:1; |
927be08e | 4192 | unsigned int second_toc_pass:1; |
67f0cbdb | 4193 | unsigned int do_toc_opt:1; |
4c52953f | 4194 | |
9a23f96e AM |
4195 | /* Set if tls optimization is enabled. */ |
4196 | unsigned int do_tls_opt:1; | |
4197 | ||
3e04d765 AM |
4198 | /* Set if inline plt calls should be converted to direct calls. */ |
4199 | unsigned int can_convert_all_inline_plt:1; | |
4200 | ||
5d1634d7 | 4201 | /* Set on error. */ |
99877b66 | 4202 | unsigned int stub_error:1; |
721956f4 | 4203 | |
8c5b4e52 AM |
4204 | /* Whether func_desc_adjust needs to be run over symbols. */ |
4205 | unsigned int need_func_desc_adj:1; | |
721956f4 | 4206 | |
82e66161 AM |
4207 | /* Whether there exist local gnu indirect function resolvers, |
4208 | referenced by dynamic relocations. */ | |
4209 | unsigned int local_ifunc_resolver:1; | |
4210 | unsigned int maybe_local_ifunc_resolver:1; | |
4211 | ||
f378ab09 AM |
4212 | /* Whether plt calls for ELFv2 localentry:0 funcs have been optimized. */ |
4213 | unsigned int has_plt_localentry0:1; | |
4214 | ||
721956f4 AM |
4215 | /* Incremented every time we size stubs. */ |
4216 | unsigned int stub_iteration; | |
5d1634d7 | 4217 | |
87d72d41 AM |
4218 | /* Small local sym cache. */ |
4219 | struct sym_cache sym_cache; | |
65f38f15 AM |
4220 | }; |
4221 | ||
4c52953f AM |
4222 | /* Rename some of the generic section flags to better document how they |
4223 | are used here. */ | |
b0dddeec AM |
4224 | |
4225 | /* Nonzero if this section has TLS related relocations. */ | |
4226 | #define has_tls_reloc sec_flg0 | |
4227 | ||
23cedd1d | 4228 | /* Nonzero if this section has an old-style call to __tls_get_addr. */ |
b0dddeec AM |
4229 | #define has_tls_get_addr_call sec_flg1 |
4230 | ||
4231 | /* Nonzero if this section has any toc or got relocs. */ | |
4232 | #define has_toc_reloc sec_flg2 | |
4233 | ||
4234 | /* Nonzero if this section has a call to another section that uses | |
4235 | the toc or got. */ | |
d77c8a4b | 4236 | #define makes_toc_func_call sec_flg3 |
b0dddeec AM |
4237 | |
4238 | /* Recursion protection when determining above flag. */ | |
d77c8a4b | 4239 | #define call_check_in_progress sec_flg4 |
70cc837d | 4240 | #define call_check_done sec_flg5 |
4c52953f | 4241 | |
65f38f15 AM |
4242 | /* Get the ppc64 ELF linker hash table from a link_info structure. */ |
4243 | ||
4244 | #define ppc_hash_table(p) \ | |
4dfe6ac6 NC |
4245 | (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \ |
4246 | == PPC64_ELF_DATA ? ((struct ppc_link_hash_table *) ((p)->hash)) : NULL) | |
65f38f15 | 4247 | |
721956f4 AM |
4248 | #define ppc_stub_hash_lookup(table, string, create, copy) \ |
4249 | ((struct ppc_stub_hash_entry *) \ | |
4250 | bfd_hash_lookup ((table), (string), (create), (copy))) | |
4251 | ||
4252 | #define ppc_branch_hash_lookup(table, string, create, copy) \ | |
4253 | ((struct ppc_branch_hash_entry *) \ | |
4254 | bfd_hash_lookup ((table), (string), (create), (copy))) | |
4255 | ||
4256 | /* Create an entry in the stub hash table. */ | |
4257 | ||
4258 | static struct bfd_hash_entry * | |
4ce794b7 AM |
4259 | stub_hash_newfunc (struct bfd_hash_entry *entry, |
4260 | struct bfd_hash_table *table, | |
4261 | const char *string) | |
721956f4 AM |
4262 | { |
4263 | /* Allocate the structure if it has not already been allocated by a | |
4264 | subclass. */ | |
4265 | if (entry == NULL) | |
4266 | { | |
4267 | entry = bfd_hash_allocate (table, sizeof (struct ppc_stub_hash_entry)); | |
4268 | if (entry == NULL) | |
4269 | return entry; | |
4270 | } | |
4271 | ||
4272 | /* Call the allocation method of the superclass. */ | |
4273 | entry = bfd_hash_newfunc (entry, table, string); | |
4274 | if (entry != NULL) | |
4275 | { | |
4276 | struct ppc_stub_hash_entry *eh; | |
4277 | ||
4278 | /* Initialize the local fields. */ | |
4279 | eh = (struct ppc_stub_hash_entry *) entry; | |
ad8e1ba5 | 4280 | eh->stub_type = ppc_stub_none; |
6f20ed8a | 4281 | eh->group = NULL; |
721956f4 AM |
4282 | eh->stub_offset = 0; |
4283 | eh->target_value = 0; | |
4284 | eh->target_section = NULL; | |
721956f4 | 4285 | eh->h = NULL; |
6911b7dc | 4286 | eh->plt_ent = NULL; |
6911b7dc | 4287 | eh->other = 0; |
721956f4 AM |
4288 | } |
4289 | ||
4290 | return entry; | |
4291 | } | |
4292 | ||
4293 | /* Create an entry in the branch hash table. */ | |
4294 | ||
4295 | static struct bfd_hash_entry * | |
4ce794b7 AM |
4296 | branch_hash_newfunc (struct bfd_hash_entry *entry, |
4297 | struct bfd_hash_table *table, | |
4298 | const char *string) | |
721956f4 AM |
4299 | { |
4300 | /* Allocate the structure if it has not already been allocated by a | |
4301 | subclass. */ | |
4302 | if (entry == NULL) | |
4303 | { | |
4304 | entry = bfd_hash_allocate (table, sizeof (struct ppc_branch_hash_entry)); | |
4305 | if (entry == NULL) | |
4306 | return entry; | |
4307 | } | |
4308 | ||
4309 | /* Call the allocation method of the superclass. */ | |
4310 | entry = bfd_hash_newfunc (entry, table, string); | |
4311 | if (entry != NULL) | |
4312 | { | |
4313 | struct ppc_branch_hash_entry *eh; | |
4314 | ||
4315 | /* Initialize the local fields. */ | |
4316 | eh = (struct ppc_branch_hash_entry *) entry; | |
4317 | eh->offset = 0; | |
4318 | eh->iter = 0; | |
4319 | } | |
4320 | ||
4321 | return entry; | |
4322 | } | |
4323 | ||
65f38f15 AM |
4324 | /* Create an entry in a ppc64 ELF linker hash table. */ |
4325 | ||
4326 | static struct bfd_hash_entry * | |
4ce794b7 AM |
4327 | link_hash_newfunc (struct bfd_hash_entry *entry, |
4328 | struct bfd_hash_table *table, | |
4329 | const char *string) | |
65f38f15 AM |
4330 | { |
4331 | /* Allocate the structure if it has not already been allocated by a | |
4332 | subclass. */ | |
4333 | if (entry == NULL) | |
4334 | { | |
4335 | entry = bfd_hash_allocate (table, sizeof (struct ppc_link_hash_entry)); | |
4336 | if (entry == NULL) | |
4337 | return entry; | |
4338 | } | |
4339 | ||
4340 | /* Call the allocation method of the superclass. */ | |
4341 | entry = _bfd_elf_link_hash_newfunc (entry, table, string); | |
4342 | if (entry != NULL) | |
4343 | { | |
4344 | struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) entry; | |
4345 | ||
b3fac117 | 4346 | memset (&eh->u.stub_cache, 0, |
908b32fc | 4347 | (sizeof (struct ppc_link_hash_entry) |
b3fac117 AM |
4348 | - offsetof (struct ppc_link_hash_entry, u.stub_cache))); |
4349 | ||
4350 | /* When making function calls, old ABI code references function entry | |
4351 | points (dot symbols), while new ABI code references the function | |
4352 | descriptor symbol. We need to make any combination of reference and | |
4353 | definition work together, without breaking archive linking. | |
4354 | ||
4355 | For a defined function "foo" and an undefined call to "bar": | |
4356 | An old object defines "foo" and ".foo", references ".bar" (possibly | |
4357 | "bar" too). | |
4358 | A new object defines "foo" and references "bar". | |
4359 | ||
4360 | A new object thus has no problem with its undefined symbols being | |
4361 | satisfied by definitions in an old object. On the other hand, the | |
4362 | old object won't have ".bar" satisfied by a new object. | |
4363 | ||
4364 | Keep a list of newly added dot-symbols. */ | |
4365 | ||
4366 | if (string[0] == '.') | |
4367 | { | |
4368 | struct ppc_link_hash_table *htab; | |
4369 | ||
4370 | htab = (struct ppc_link_hash_table *) table; | |
4371 | eh->u.next_dot_sym = htab->dot_syms; | |
4372 | htab->dot_syms = eh; | |
4373 | } | |
65f38f15 AM |
4374 | } |
4375 | ||
4376 | return entry; | |
4377 | } | |
4378 | ||
3b421ab3 AM |
4379 | struct tocsave_entry { |
4380 | asection *sec; | |
4381 | bfd_vma offset; | |
4382 | }; | |
4383 | ||
4384 | static hashval_t | |
4385 | tocsave_htab_hash (const void *p) | |
4386 | { | |
4387 | const struct tocsave_entry *e = (const struct tocsave_entry *) p; | |
4aef7643 | 4388 | return ((bfd_vma) (intptr_t) e->sec ^ e->offset) >> 3; |
3b421ab3 AM |
4389 | } |
4390 | ||
4391 | static int | |
4392 | tocsave_htab_eq (const void *p1, const void *p2) | |
4393 | { | |
4394 | const struct tocsave_entry *e1 = (const struct tocsave_entry *) p1; | |
4395 | const struct tocsave_entry *e2 = (const struct tocsave_entry *) p2; | |
4396 | return e1->sec == e2->sec && e1->offset == e2->offset; | |
4397 | } | |
4398 | ||
68faa637 AM |
4399 | /* Destroy a ppc64 ELF linker hash table. */ |
4400 | ||
4401 | static void | |
d495ab0d | 4402 | ppc64_elf_link_hash_table_free (bfd *obfd) |
68faa637 | 4403 | { |
d495ab0d | 4404 | struct ppc_link_hash_table *htab; |
68faa637 | 4405 | |
d495ab0d | 4406 | htab = (struct ppc_link_hash_table *) obfd->link.hash; |
68faa637 AM |
4407 | if (htab->tocsave_htab) |
4408 | htab_delete (htab->tocsave_htab); | |
d495ab0d AM |
4409 | bfd_hash_table_free (&htab->branch_hash_table); |
4410 | bfd_hash_table_free (&htab->stub_hash_table); | |
4411 | _bfd_elf_link_hash_table_free (obfd); | |
68faa637 AM |
4412 | } |
4413 | ||
65f38f15 AM |
4414 | /* Create a ppc64 ELF linker hash table. */ |
4415 | ||
4416 | static struct bfd_link_hash_table * | |
4ce794b7 | 4417 | ppc64_elf_link_hash_table_create (bfd *abfd) |
65f38f15 AM |
4418 | { |
4419 | struct ppc_link_hash_table *htab; | |
4420 | bfd_size_type amt = sizeof (struct ppc_link_hash_table); | |
4421 | ||
4ce794b7 | 4422 | htab = bfd_zmalloc (amt); |
65f38f15 AM |
4423 | if (htab == NULL) |
4424 | return NULL; | |
4425 | ||
66eb6687 | 4426 | if (!_bfd_elf_link_hash_table_init (&htab->elf, abfd, link_hash_newfunc, |
4dfe6ac6 NC |
4427 | sizeof (struct ppc_link_hash_entry), |
4428 | PPC64_ELF_DATA)) | |
65f38f15 | 4429 | { |
e2d34d7d | 4430 | free (htab); |
65f38f15 AM |
4431 | return NULL; |
4432 | } | |
4433 | ||
721956f4 | 4434 | /* Init the stub hash table too. */ |
66eb6687 AM |
4435 | if (!bfd_hash_table_init (&htab->stub_hash_table, stub_hash_newfunc, |
4436 | sizeof (struct ppc_stub_hash_entry))) | |
2915c55b | 4437 | { |
d495ab0d | 4438 | _bfd_elf_link_hash_table_free (abfd); |
2915c55b JK |
4439 | return NULL; |
4440 | } | |
721956f4 AM |
4441 | |
4442 | /* And the branch hash table. */ | |
66eb6687 AM |
4443 | if (!bfd_hash_table_init (&htab->branch_hash_table, branch_hash_newfunc, |
4444 | sizeof (struct ppc_branch_hash_entry))) | |
2915c55b JK |
4445 | { |
4446 | bfd_hash_table_free (&htab->stub_hash_table); | |
d495ab0d | 4447 | _bfd_elf_link_hash_table_free (abfd); |
2915c55b JK |
4448 | return NULL; |
4449 | } | |
721956f4 | 4450 | |
3b421ab3 AM |
4451 | htab->tocsave_htab = htab_try_create (1024, |
4452 | tocsave_htab_hash, | |
4453 | tocsave_htab_eq, | |
4454 | NULL); | |
4455 | if (htab->tocsave_htab == NULL) | |
2915c55b | 4456 | { |
d495ab0d | 4457 | ppc64_elf_link_hash_table_free (abfd); |
2915c55b JK |
4458 | return NULL; |
4459 | } | |
d495ab0d | 4460 | htab->elf.root.hash_table_free = ppc64_elf_link_hash_table_free; |
3b421ab3 | 4461 | |
3254fd24 AM |
4462 | /* Initializing two fields of the union is just cosmetic. We really |
4463 | only care about glist, but when compiled on a 32-bit host the | |
4464 | bfd_vma fields are larger. Setting the bfd_vma to zero makes | |
4465 | debugger inspection of these fields look nicer. */ | |
a6aa5195 AM |
4466 | htab->elf.init_got_refcount.refcount = 0; |
4467 | htab->elf.init_got_refcount.glist = NULL; | |
4468 | htab->elf.init_plt_refcount.refcount = 0; | |
4469 | htab->elf.init_plt_refcount.glist = NULL; | |
4470 | htab->elf.init_got_offset.offset = 0; | |
4471 | htab->elf.init_got_offset.glist = NULL; | |
4472 | htab->elf.init_plt_offset.offset = 0; | |
4473 | htab->elf.init_plt_offset.glist = NULL; | |
3254fd24 | 4474 | |
65f38f15 AM |
4475 | return &htab->elf.root; |
4476 | } | |
4477 | ||
bfeb4a28 AM |
4478 | /* Create sections for linker generated code. */ |
4479 | ||
4480 | static bfd_boolean | |
4481 | create_linkage_sections (bfd *dynobj, struct bfd_link_info *info) | |
4482 | { | |
4483 | struct ppc_link_hash_table *htab; | |
4484 | flagword flags; | |
4485 | ||
4486 | htab = ppc_hash_table (info); | |
4487 | ||
bfeb4a28 AM |
4488 | flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY |
4489 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
b32547cd AM |
4490 | if (htab->params->save_restore_funcs) |
4491 | { | |
4492 | /* Create .sfpr for code to save and restore fp regs. */ | |
4493 | htab->sfpr = bfd_make_section_anyway_with_flags (dynobj, ".sfpr", | |
4494 | flags); | |
4495 | if (htab->sfpr == NULL | |
4496 | || ! bfd_set_section_alignment (dynobj, htab->sfpr, 2)) | |
4497 | return FALSE; | |
4498 | } | |
4499 | ||
4500 | if (bfd_link_relocatable (info)) | |
4501 | return TRUE; | |
bfeb4a28 AM |
4502 | |
4503 | /* Create .glink for lazy dynamic linking support. */ | |
4504 | htab->glink = bfd_make_section_anyway_with_flags (dynobj, ".glink", | |
4505 | flags); | |
4506 | if (htab->glink == NULL | |
4507 | || ! bfd_set_section_alignment (dynobj, htab->glink, 3)) | |
4508 | return FALSE; | |
4509 | ||
9e390558 AM |
4510 | /* The part of .glink used by global entry stubs, separate so that |
4511 | it can be aligned appropriately without affecting htab->glink. */ | |
4512 | htab->global_entry = bfd_make_section_anyway_with_flags (dynobj, ".glink", | |
4513 | flags); | |
4514 | if (htab->global_entry == NULL | |
4515 | || ! bfd_set_section_alignment (dynobj, htab->global_entry, 2)) | |
4516 | return FALSE; | |
4517 | ||
bfeb4a28 AM |
4518 | if (!info->no_ld_generated_unwind_info) |
4519 | { | |
4520 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS | |
4521 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
4522 | htab->glink_eh_frame = bfd_make_section_anyway_with_flags (dynobj, | |
4523 | ".eh_frame", | |
4524 | flags); | |
4525 | if (htab->glink_eh_frame == NULL | |
4526 | || !bfd_set_section_alignment (dynobj, htab->glink_eh_frame, 2)) | |
4527 | return FALSE; | |
4528 | } | |
4529 | ||
4530 | flags = SEC_ALLOC | SEC_LINKER_CREATED; | |
33e44f2e AM |
4531 | htab->elf.iplt = bfd_make_section_anyway_with_flags (dynobj, ".iplt", flags); |
4532 | if (htab->elf.iplt == NULL | |
4533 | || ! bfd_set_section_alignment (dynobj, htab->elf.iplt, 3)) | |
bfeb4a28 AM |
4534 | return FALSE; |
4535 | ||
4536 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | |
4537 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
33e44f2e AM |
4538 | htab->elf.irelplt |
4539 | = bfd_make_section_anyway_with_flags (dynobj, ".rela.iplt", flags); | |
4540 | if (htab->elf.irelplt == NULL | |
4541 | || ! bfd_set_section_alignment (dynobj, htab->elf.irelplt, 3)) | |
bfeb4a28 AM |
4542 | return FALSE; |
4543 | ||
4544 | /* Create branch lookup table for plt_branch stubs. */ | |
4545 | flags = (SEC_ALLOC | SEC_LOAD | |
4546 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
4547 | htab->brlt = bfd_make_section_anyway_with_flags (dynobj, ".branch_lt", | |
4548 | flags); | |
4549 | if (htab->brlt == NULL | |
4550 | || ! bfd_set_section_alignment (dynobj, htab->brlt, 3)) | |
4551 | return FALSE; | |
4552 | ||
2d7ad24e AM |
4553 | /* Local plt entries, put in .branch_lt but a separate section for |
4554 | convenience. */ | |
4555 | htab->pltlocal = bfd_make_section_anyway_with_flags (dynobj, ".branch_lt", | |
4556 | flags); | |
4557 | if (htab->pltlocal == NULL | |
4558 | || ! bfd_set_section_alignment (dynobj, htab->pltlocal, 3)) | |
4559 | return FALSE; | |
4560 | ||
0e1862bb | 4561 | if (!bfd_link_pic (info)) |
bfeb4a28 AM |
4562 | return TRUE; |
4563 | ||
4564 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | |
4565 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
2d7ad24e AM |
4566 | htab->relbrlt |
4567 | = bfd_make_section_anyway_with_flags (dynobj, ".rela.branch_lt", flags); | |
bfeb4a28 AM |
4568 | if (htab->relbrlt == NULL |
4569 | || ! bfd_set_section_alignment (dynobj, htab->relbrlt, 3)) | |
4570 | return FALSE; | |
4571 | ||
2d7ad24e AM |
4572 | htab->relpltlocal |
4573 | = bfd_make_section_anyway_with_flags (dynobj, ".rela.branch_lt", flags); | |
4574 | if (htab->relpltlocal == NULL | |
4575 | || ! bfd_set_section_alignment (dynobj, htab->relpltlocal, 3)) | |
4576 | return FALSE; | |
4577 | ||
bfeb4a28 AM |
4578 | return TRUE; |
4579 | } | |
4580 | ||
e717da7e AM |
4581 | /* Satisfy the ELF linker by filling in some fields in our fake bfd. */ |
4582 | ||
bfeb4a28 | 4583 | bfd_boolean |
e7d1c40c AM |
4584 | ppc64_elf_init_stub_bfd (struct bfd_link_info *info, |
4585 | struct ppc64_elf_params *params) | |
e717da7e AM |
4586 | { |
4587 | struct ppc_link_hash_table *htab; | |
4588 | ||
e7d1c40c | 4589 | elf_elfheader (params->stub_bfd)->e_ident[EI_CLASS] = ELFCLASS64; |
e717da7e AM |
4590 | |
4591 | /* Always hook our dynamic sections into the first bfd, which is the | |
4592 | linker created stub bfd. This ensures that the GOT header is at | |
4593 | the start of the output TOC section. */ | |
4594 | htab = ppc_hash_table (info); | |
e7d1c40c AM |
4595 | htab->elf.dynobj = params->stub_bfd; |
4596 | htab->params = params; | |
bfeb4a28 | 4597 | |
bfeb4a28 | 4598 | return create_linkage_sections (htab->elf.dynobj, info); |
e717da7e AM |
4599 | } |
4600 | ||
721956f4 AM |
4601 | /* Build a name for an entry in the stub hash table. */ |
4602 | ||
4603 | static char * | |
4ce794b7 AM |
4604 | ppc_stub_name (const asection *input_section, |
4605 | const asection *sym_sec, | |
4606 | const struct ppc_link_hash_entry *h, | |
4607 | const Elf_Internal_Rela *rel) | |
721956f4 AM |
4608 | { |
4609 | char *stub_name; | |
bcaa2f82 | 4610 | ssize_t len; |
721956f4 AM |
4611 | |
4612 | /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31 | |
4613 | offsets from a sym as a branch target? In fact, we could | |
4614 | probably assume the addend is always zero. */ | |
4615 | BFD_ASSERT (((int) rel->r_addend & 0xffffffff) == rel->r_addend); | |
4616 | ||
4617 | if (h) | |
4618 | { | |
4619 | len = 8 + 1 + strlen (h->elf.root.root.string) + 1 + 8 + 1; | |
4620 | stub_name = bfd_malloc (len); | |
46de2a7c AM |
4621 | if (stub_name == NULL) |
4622 | return stub_name; | |
4623 | ||
bcaa2f82 AM |
4624 | len = sprintf (stub_name, "%08x.%s+%x", |
4625 | input_section->id & 0xffffffff, | |
4626 | h->elf.root.root.string, | |
4627 | (int) rel->r_addend & 0xffffffff); | |
721956f4 AM |
4628 | } |
4629 | else | |
4630 | { | |
ad8e1ba5 | 4631 | len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1; |
721956f4 | 4632 | stub_name = bfd_malloc (len); |
46de2a7c AM |
4633 | if (stub_name == NULL) |
4634 | return stub_name; | |
4635 | ||
bcaa2f82 AM |
4636 | len = sprintf (stub_name, "%08x.%x:%x+%x", |
4637 | input_section->id & 0xffffffff, | |
4638 | sym_sec->id & 0xffffffff, | |
4639 | (int) ELF64_R_SYM (rel->r_info) & 0xffffffff, | |
4640 | (int) rel->r_addend & 0xffffffff); | |
721956f4 | 4641 | } |
bcaa2f82 | 4642 | if (len > 2 && stub_name[len - 2] == '+' && stub_name[len - 1] == '0') |
ee75fd95 | 4643 | stub_name[len - 2] = 0; |
721956f4 AM |
4644 | return stub_name; |
4645 | } | |
4646 | ||
4647 | /* Look up an entry in the stub hash. Stub entries are cached because | |
4648 | creating the stub name takes a bit of time. */ | |
4649 | ||
4650 | static struct ppc_stub_hash_entry * | |
4ce794b7 AM |
4651 | ppc_get_stub_entry (const asection *input_section, |
4652 | const asection *sym_sec, | |
039b3fef | 4653 | struct ppc_link_hash_entry *h, |
4ce794b7 AM |
4654 | const Elf_Internal_Rela *rel, |
4655 | struct ppc_link_hash_table *htab) | |
721956f4 AM |
4656 | { |
4657 | struct ppc_stub_hash_entry *stub_entry; | |
6f20ed8a | 4658 | struct map_stub *group; |
721956f4 AM |
4659 | |
4660 | /* If this input section is part of a group of sections sharing one | |
4661 | stub section, then use the id of the first section in the group. | |
4662 | Stub names need to include a section id, as there may well be | |
4663 | more than one stub used to reach say, printf, and we need to | |
4664 | distinguish between them. */ | |
6f20ed8a | 4665 | group = htab->sec_info[input_section->id].u.group; |
89d77b8a AM |
4666 | if (group == NULL) |
4667 | return NULL; | |
721956f4 | 4668 | |
b3fac117 AM |
4669 | if (h != NULL && h->u.stub_cache != NULL |
4670 | && h->u.stub_cache->h == h | |
6f20ed8a | 4671 | && h->u.stub_cache->group == group) |
721956f4 | 4672 | { |
b3fac117 | 4673 | stub_entry = h->u.stub_cache; |
721956f4 AM |
4674 | } |
4675 | else | |
4676 | { | |
4677 | char *stub_name; | |
4678 | ||
6f20ed8a | 4679 | stub_name = ppc_stub_name (group->link_sec, sym_sec, h, rel); |
721956f4 AM |
4680 | if (stub_name == NULL) |
4681 | return NULL; | |
4682 | ||
4683 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, | |
b34976b6 | 4684 | stub_name, FALSE, FALSE); |
721956f4 | 4685 | if (h != NULL) |
b3fac117 | 4686 | h->u.stub_cache = stub_entry; |
721956f4 AM |
4687 | |
4688 | free (stub_name); | |
4689 | } | |
4690 | ||
4691 | return stub_entry; | |
4692 | } | |
4693 | ||
4694 | /* Add a new stub entry to the stub hash. Not all fields of the new | |
4695 | stub entry are initialised. */ | |
4696 | ||
4697 | static struct ppc_stub_hash_entry * | |
4ce794b7 AM |
4698 | ppc_add_stub (const char *stub_name, |
4699 | asection *section, | |
25f53a85 | 4700 | struct bfd_link_info *info) |
721956f4 | 4701 | { |
25f53a85 | 4702 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
6f20ed8a | 4703 | struct map_stub *group; |
721956f4 AM |
4704 | asection *link_sec; |
4705 | asection *stub_sec; | |
4706 | struct ppc_stub_hash_entry *stub_entry; | |
4707 | ||
6f20ed8a AM |
4708 | group = htab->sec_info[section->id].u.group; |
4709 | link_sec = group->link_sec; | |
4710 | stub_sec = group->stub_sec; | |
721956f4 AM |
4711 | if (stub_sec == NULL) |
4712 | { | |
6f20ed8a AM |
4713 | size_t namelen; |
4714 | bfd_size_type len; | |
4715 | char *s_name; | |
721956f4 | 4716 | |
6f20ed8a AM |
4717 | namelen = strlen (link_sec->name); |
4718 | len = namelen + sizeof (STUB_SUFFIX); | |
4719 | s_name = bfd_alloc (htab->params->stub_bfd, len); | |
4720 | if (s_name == NULL) | |
4721 | return NULL; | |
721956f4 | 4722 | |
6f20ed8a AM |
4723 | memcpy (s_name, link_sec->name, namelen); |
4724 | memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX)); | |
4725 | stub_sec = (*htab->params->add_stub_section) (s_name, link_sec); | |
4726 | if (stub_sec == NULL) | |
4727 | return NULL; | |
4728 | group->stub_sec = stub_sec; | |
721956f4 AM |
4729 | } |
4730 | ||
4731 | /* Enter this entry into the linker stub hash table. */ | |
4732 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, stub_name, | |
b34976b6 | 4733 | TRUE, FALSE); |
721956f4 AM |
4734 | if (stub_entry == NULL) |
4735 | { | |
695344c0 | 4736 | /* xgettext:c-format */ |
cf97bcb0 AM |
4737 | _bfd_error_handler (_("%pB: cannot create stub entry %s"), |
4738 | section->owner, stub_name); | |
721956f4 AM |
4739 | return NULL; |
4740 | } | |
4741 | ||
6f20ed8a | 4742 | stub_entry->group = group; |
721956f4 | 4743 | stub_entry->stub_offset = 0; |
721956f4 AM |
4744 | return stub_entry; |
4745 | } | |
4746 | ||
e717da7e AM |
4747 | /* Create .got and .rela.got sections in ABFD, and .got in dynobj if |
4748 | not already done. */ | |
65f38f15 | 4749 | |
b34976b6 | 4750 | static bfd_boolean |
e717da7e | 4751 | create_got_section (bfd *abfd, struct bfd_link_info *info) |
65f38f15 | 4752 | { |
e717da7e AM |
4753 | asection *got, *relgot; |
4754 | flagword flags; | |
4755 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
65f38f15 | 4756 | |
0c8d6e5c | 4757 | if (!is_ppc64_elf (abfd)) |
0ffa91dd | 4758 | return FALSE; |
4dfe6ac6 NC |
4759 | if (htab == NULL) |
4760 | return FALSE; | |
0ffa91dd | 4761 | |
33e44f2e AM |
4762 | if (!htab->elf.sgot |
4763 | && !_bfd_elf_create_got_section (htab->elf.dynobj, info)) | |
4764 | return FALSE; | |
e717da7e AM |
4765 | |
4766 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY | |
4767 | | SEC_LINKER_CREATED); | |
4768 | ||
c456f082 | 4769 | got = bfd_make_section_anyway_with_flags (abfd, ".got", flags); |
e717da7e | 4770 | if (!got |
e717da7e AM |
4771 | || !bfd_set_section_alignment (abfd, got, 3)) |
4772 | return FALSE; | |
65f38f15 | 4773 | |
c456f082 AM |
4774 | relgot = bfd_make_section_anyway_with_flags (abfd, ".rela.got", |
4775 | flags | SEC_READONLY); | |
e717da7e | 4776 | if (!relgot |
e717da7e | 4777 | || ! bfd_set_section_alignment (abfd, relgot, 3)) |
b34976b6 | 4778 | return FALSE; |
e717da7e AM |
4779 | |
4780 | ppc64_elf_tdata (abfd)->got = got; | |
4781 | ppc64_elf_tdata (abfd)->relgot = relgot; | |
b34976b6 | 4782 | return TRUE; |
65f38f15 | 4783 | } |
5bd4f169 | 4784 | |
b31867b6 AM |
4785 | /* Follow indirect and warning symbol links. */ |
4786 | ||
4787 | static inline struct bfd_link_hash_entry * | |
4788 | follow_link (struct bfd_link_hash_entry *h) | |
4789 | { | |
4790 | while (h->type == bfd_link_hash_indirect | |
4791 | || h->type == bfd_link_hash_warning) | |
4792 | h = h->u.i.link; | |
4793 | return h; | |
4794 | } | |
4795 | ||
4796 | static inline struct elf_link_hash_entry * | |
4797 | elf_follow_link (struct elf_link_hash_entry *h) | |
4798 | { | |
4799 | return (struct elf_link_hash_entry *) follow_link (&h->root); | |
4800 | } | |
4801 | ||
4802 | static inline struct ppc_link_hash_entry * | |
4803 | ppc_follow_link (struct ppc_link_hash_entry *h) | |
4804 | { | |
4805 | return (struct ppc_link_hash_entry *) follow_link (&h->elf.root); | |
4806 | } | |
4807 | ||
40d16e0b AM |
4808 | /* Merge PLT info on FROM with that on TO. */ |
4809 | ||
4810 | static void | |
4811 | move_plt_plist (struct ppc_link_hash_entry *from, | |
4812 | struct ppc_link_hash_entry *to) | |
4813 | { | |
4814 | if (from->elf.plt.plist != NULL) | |
4815 | { | |
4816 | if (to->elf.plt.plist != NULL) | |
4817 | { | |
4818 | struct plt_entry **entp; | |
4819 | struct plt_entry *ent; | |
4820 | ||
4821 | for (entp = &from->elf.plt.plist; (ent = *entp) != NULL; ) | |
4822 | { | |
4823 | struct plt_entry *dent; | |
4824 | ||
4825 | for (dent = to->elf.plt.plist; dent != NULL; dent = dent->next) | |
4826 | if (dent->addend == ent->addend) | |
4827 | { | |
4828 | dent->plt.refcount += ent->plt.refcount; | |
4829 | *entp = ent->next; | |
4830 | break; | |
4831 | } | |
4832 | if (dent == NULL) | |
4833 | entp = &ent->next; | |
4834 | } | |
4835 | *entp = to->elf.plt.plist; | |
4836 | } | |
4837 | ||
4838 | to->elf.plt.plist = from->elf.plt.plist; | |
4839 | from->elf.plt.plist = NULL; | |
4840 | } | |
4841 | } | |
4842 | ||
65f38f15 AM |
4843 | /* Copy the extra info we tack onto an elf_link_hash_entry. */ |
4844 | ||
4845 | static void | |
fcfa13d2 AM |
4846 | ppc64_elf_copy_indirect_symbol (struct bfd_link_info *info, |
4847 | struct elf_link_hash_entry *dir, | |
4848 | struct elf_link_hash_entry *ind) | |
65f38f15 AM |
4849 | { |
4850 | struct ppc_link_hash_entry *edir, *eind; | |
4851 | ||
4852 | edir = (struct ppc_link_hash_entry *) dir; | |
4853 | eind = (struct ppc_link_hash_entry *) ind; | |
4854 | ||
c79d6685 AM |
4855 | edir->is_func |= eind->is_func; |
4856 | edir->is_func_descriptor |= eind->is_func_descriptor; | |
4857 | edir->tls_mask |= eind->tls_mask; | |
4858 | if (eind->oh != NULL) | |
4859 | edir->oh = ppc_follow_link (eind->oh); | |
4860 | ||
474436e6 | 4861 | if (edir->elf.versioned != versioned_hidden) |
e81830c5 AM |
4862 | edir->elf.ref_dynamic |= eind->elf.ref_dynamic; |
4863 | edir->elf.ref_regular |= eind->elf.ref_regular; | |
4864 | edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak; | |
4a7e5234 | 4865 | edir->elf.non_got_ref |= eind->elf.non_got_ref; |
e81830c5 AM |
4866 | edir->elf.needs_plt |= eind->elf.needs_plt; |
4867 | edir->elf.pointer_equality_needed |= eind->elf.pointer_equality_needed; | |
c79d6685 | 4868 | |
d311bc8b AM |
4869 | /* If we were called to copy over info for a weak sym, don't copy |
4870 | dyn_relocs, plt/got info, or dynindx. We used to copy dyn_relocs | |
4871 | in order to simplify readonly_dynrelocs and save a field in the | |
4872 | symbol hash entry, but that means dyn_relocs can't be used in any | |
4873 | tests about a specific symbol, or affect other symbol flags which | |
ab2477e1 | 4874 | are then tested. */ |
d311bc8b | 4875 | if (eind->elf.root.type != bfd_link_hash_indirect) |
ab2477e1 | 4876 | return; |
d311bc8b | 4877 | |
411e1bfb | 4878 | /* Copy over any dynamic relocs we may have on the indirect sym. */ |
bbd7ec4a | 4879 | if (eind->dyn_relocs != NULL) |
65f38f15 | 4880 | { |
bbd7ec4a AM |
4881 | if (edir->dyn_relocs != NULL) |
4882 | { | |
6061a67d AM |
4883 | struct elf_dyn_relocs **pp; |
4884 | struct elf_dyn_relocs *p; | |
bbd7ec4a | 4885 | |
fcfa13d2 | 4886 | /* Add reloc counts against the indirect sym to the direct sym |
bbd7ec4a AM |
4887 | list. Merge any entries against the same section. */ |
4888 | for (pp = &eind->dyn_relocs; (p = *pp) != NULL; ) | |
4889 | { | |
6061a67d | 4890 | struct elf_dyn_relocs *q; |
bbd7ec4a AM |
4891 | |
4892 | for (q = edir->dyn_relocs; q != NULL; q = q->next) | |
4893 | if (q->sec == p->sec) | |
4894 | { | |
4895 | q->pc_count += p->pc_count; | |
4896 | q->count += p->count; | |
4897 | *pp = p->next; | |
4898 | break; | |
4899 | } | |
4900 | if (q == NULL) | |
4901 | pp = &p->next; | |
4902 | } | |
4903 | *pp = edir->dyn_relocs; | |
4904 | } | |
4905 | ||
65f38f15 AM |
4906 | edir->dyn_relocs = eind->dyn_relocs; |
4907 | eind->dyn_relocs = NULL; | |
4908 | } | |
65f38f15 | 4909 | |
81848ca0 AM |
4910 | /* Copy over got entries that we may have already seen to the |
4911 | symbol which just became indirect. */ | |
411e1bfb AM |
4912 | if (eind->elf.got.glist != NULL) |
4913 | { | |
4914 | if (edir->elf.got.glist != NULL) | |
4915 | { | |
4916 | struct got_entry **entp; | |
4917 | struct got_entry *ent; | |
4918 | ||
4919 | for (entp = &eind->elf.got.glist; (ent = *entp) != NULL; ) | |
4920 | { | |
4921 | struct got_entry *dent; | |
4922 | ||
4923 | for (dent = edir->elf.got.glist; dent != NULL; dent = dent->next) | |
4924 | if (dent->addend == ent->addend | |
e717da7e | 4925 | && dent->owner == ent->owner |
411e1bfb AM |
4926 | && dent->tls_type == ent->tls_type) |
4927 | { | |
4928 | dent->got.refcount += ent->got.refcount; | |
4929 | *entp = ent->next; | |
4930 | break; | |
4931 | } | |
4932 | if (dent == NULL) | |
4933 | entp = &ent->next; | |
4934 | } | |
4935 | *entp = edir->elf.got.glist; | |
4936 | } | |
4937 | ||
4938 | edir->elf.got.glist = eind->elf.got.glist; | |
4939 | eind->elf.got.glist = NULL; | |
4940 | } | |
4941 | ||
4942 | /* And plt entries. */ | |
40d16e0b | 4943 | move_plt_plist (eind, edir); |
411e1bfb | 4944 | |
fcfa13d2 | 4945 | if (eind->elf.dynindx != -1) |
411e1bfb | 4946 | { |
fcfa13d2 AM |
4947 | if (edir->elf.dynindx != -1) |
4948 | _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr, | |
4949 | edir->elf.dynstr_index); | |
411e1bfb AM |
4950 | edir->elf.dynindx = eind->elf.dynindx; |
4951 | edir->elf.dynstr_index = eind->elf.dynstr_index; | |
4952 | eind->elf.dynindx = -1; | |
4953 | eind->elf.dynstr_index = 0; | |
4954 | } | |
411e1bfb AM |
4955 | } |
4956 | ||
8387904d AM |
4957 | /* Find the function descriptor hash entry from the given function code |
4958 | hash entry FH. Link the entries via their OH fields. */ | |
4959 | ||
4960 | static struct ppc_link_hash_entry * | |
b31867b6 | 4961 | lookup_fdh (struct ppc_link_hash_entry *fh, struct ppc_link_hash_table *htab) |
8387904d AM |
4962 | { |
4963 | struct ppc_link_hash_entry *fdh = fh->oh; | |
4964 | ||
4965 | if (fdh == NULL) | |
4966 | { | |
4967 | const char *fd_name = fh->elf.root.root.string + 1; | |
4968 | ||
4969 | fdh = (struct ppc_link_hash_entry *) | |
4970 | elf_link_hash_lookup (&htab->elf, fd_name, FALSE, FALSE, FALSE); | |
b31867b6 AM |
4971 | if (fdh == NULL) |
4972 | return fdh; | |
4973 | ||
4974 | fdh->is_func_descriptor = 1; | |
4975 | fdh->oh = fh; | |
4976 | fh->is_func = 1; | |
4977 | fh->oh = fdh; | |
8387904d AM |
4978 | } |
4979 | ||
8c5b4e52 AM |
4980 | fdh = ppc_follow_link (fdh); |
4981 | fdh->is_func_descriptor = 1; | |
4982 | fdh->oh = fh; | |
4983 | return fdh; | |
8387904d AM |
4984 | } |
4985 | ||
8c5b4e52 | 4986 | /* Make a fake function descriptor sym for the undefined code sym FH. */ |
bb700d78 AM |
4987 | |
4988 | static struct ppc_link_hash_entry * | |
4989 | make_fdh (struct bfd_link_info *info, | |
908b32fc | 4990 | struct ppc_link_hash_entry *fh) |
bb700d78 | 4991 | { |
8c5b4e52 AM |
4992 | bfd *abfd = fh->elf.root.u.undef.abfd; |
4993 | struct bfd_link_hash_entry *bh = NULL; | |
bb700d78 | 4994 | struct ppc_link_hash_entry *fdh; |
8c5b4e52 AM |
4995 | flagword flags = (fh->elf.root.type == bfd_link_hash_undefweak |
4996 | ? BSF_WEAK | |
4997 | : BSF_GLOBAL); | |
4998 | ||
4999 | if (!_bfd_generic_link_add_one_symbol (info, abfd, | |
5000 | fh->elf.root.root.string + 1, | |
5001 | flags, bfd_und_section_ptr, 0, | |
5002 | NULL, FALSE, FALSE, &bh)) | |
bb700d78 AM |
5003 | return NULL; |
5004 | ||
5005 | fdh = (struct ppc_link_hash_entry *) bh; | |
5006 | fdh->elf.non_elf = 0; | |
908b32fc AM |
5007 | fdh->fake = 1; |
5008 | fdh->is_func_descriptor = 1; | |
5009 | fdh->oh = fh; | |
5010 | fh->is_func = 1; | |
5011 | fh->oh = fdh; | |
bb700d78 AM |
5012 | return fdh; |
5013 | } | |
5014 | ||
8387904d AM |
5015 | /* Fix function descriptor symbols defined in .opd sections to be |
5016 | function type. */ | |
555cd476 AM |
5017 | |
5018 | static bfd_boolean | |
c16153ae | 5019 | ppc64_elf_add_symbol_hook (bfd *ibfd, |
e054468f | 5020 | struct bfd_link_info *info, |
555cd476 | 5021 | Elf_Internal_Sym *isym, |
6911b7dc | 5022 | const char **name, |
555cd476 AM |
5023 | flagword *flags ATTRIBUTE_UNUSED, |
5024 | asection **sec, | |
b53dfeb2 | 5025 | bfd_vma *value) |
555cd476 | 5026 | { |
a43942db | 5027 | if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC |
f1885d1e AM |
5028 | && (ibfd->flags & DYNAMIC) == 0 |
5029 | && bfd_get_flavour (info->output_bfd) == bfd_target_elf_flavour) | |
a43942db | 5030 | elf_tdata (info->output_bfd)->has_gnu_symbols |= elf_gnu_symbol_ifunc; |
f64b2e8d | 5031 | |
b53dfeb2 | 5032 | if (*sec != NULL |
f1885d1e | 5033 | && strcmp ((*sec)->name, ".opd") == 0) |
b53dfeb2 AM |
5034 | { |
5035 | asection *code_sec; | |
5036 | ||
5037 | if (!(ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC | |
5038 | || ELF_ST_TYPE (isym->st_info) == STT_FUNC)) | |
5039 | isym->st_info = ELF_ST_INFO (ELF_ST_BIND (isym->st_info), STT_FUNC); | |
5040 | ||
5041 | /* If the symbol is a function defined in .opd, and the function | |
5042 | code is in a discarded group, let it appear to be undefined. */ | |
0e1862bb | 5043 | if (!bfd_link_relocatable (info) |
b53dfeb2 AM |
5044 | && (*sec)->reloc_count != 0 |
5045 | && opd_entry_value (*sec, *value, &code_sec, NULL, | |
5046 | FALSE) != (bfd_vma) -1 | |
5047 | && discarded_section (code_sec)) | |
5048 | { | |
5049 | *sec = bfd_und_section_ptr; | |
5050 | isym->st_shndx = SHN_UNDEF; | |
5051 | } | |
5052 | } | |
dbd1e97e AM |
5053 | else if (*sec != NULL |
5054 | && strcmp ((*sec)->name, ".toc") == 0 | |
5055 | && ELF_ST_TYPE (isym->st_info) == STT_OBJECT) | |
5056 | { | |
5057 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
5058 | if (htab != NULL) | |
5059 | htab->params->object_in_toc = 1; | |
5060 | } | |
433817dd | 5061 | |
6911b7dc AM |
5062 | if ((STO_PPC64_LOCAL_MASK & isym->st_other) != 0) |
5063 | { | |
5064 | if (abiversion (ibfd) == 0) | |
5065 | set_abiversion (ibfd, 2); | |
5066 | else if (abiversion (ibfd) == 1) | |
5067 | { | |
cf97bcb0 AM |
5068 | _bfd_error_handler (_("symbol '%s' has invalid st_other" |
5069 | " for ABI version 1"), *name); | |
6911b7dc AM |
5070 | bfd_set_error (bfd_error_bad_value); |
5071 | return FALSE; | |
5072 | } | |
5073 | } | |
5074 | ||
555cd476 AM |
5075 | return TRUE; |
5076 | } | |
5077 | ||
6911b7dc AM |
5078 | /* Merge non-visibility st_other attributes: local entry point. */ |
5079 | ||
5080 | static void | |
5081 | ppc64_elf_merge_symbol_attribute (struct elf_link_hash_entry *h, | |
5082 | const Elf_Internal_Sym *isym, | |
5083 | bfd_boolean definition, | |
5084 | bfd_boolean dynamic) | |
5085 | { | |
f378ab09 | 5086 | if (definition && (!dynamic || !h->def_regular)) |
6911b7dc AM |
5087 | h->other = ((isym->st_other & ~ELF_ST_VISIBILITY (-1)) |
5088 | | ELF_ST_VISIBILITY (h->other)); | |
5089 | } | |
5090 | ||
8c5b4e52 AM |
5091 | /* Hook called on merging a symbol. We use this to clear "fake" since |
5092 | we now have a real symbol. */ | |
5093 | ||
5094 | static bfd_boolean | |
5095 | ppc64_elf_merge_symbol (struct elf_link_hash_entry *h, | |
8b5f1ed8 | 5096 | const Elf_Internal_Sym *isym, |
8c5b4e52 AM |
5097 | asection **psec ATTRIBUTE_UNUSED, |
5098 | bfd_boolean newdef ATTRIBUTE_UNUSED, | |
5099 | bfd_boolean olddef ATTRIBUTE_UNUSED, | |
5100 | bfd *oldbfd ATTRIBUTE_UNUSED, | |
5101 | const asection *oldsec ATTRIBUTE_UNUSED) | |
5102 | { | |
5103 | ((struct ppc_link_hash_entry *) h)->fake = 0; | |
8b5f1ed8 AM |
5104 | if ((STO_PPC64_LOCAL_MASK & isym->st_other) != 0) |
5105 | ((struct ppc_link_hash_entry *) h)->non_zero_localentry = 1; | |
8c5b4e52 AM |
5106 | return TRUE; |
5107 | } | |
5108 | ||
8387904d | 5109 | /* This function makes an old ABI object reference to ".bar" cause the |
908b32fc AM |
5110 | inclusion of a new ABI object archive that defines "bar". |
5111 | NAME is a symbol defined in an archive. Return a symbol in the hash | |
5112 | table that might be satisfied by the archive symbols. */ | |
8387904d AM |
5113 | |
5114 | static struct elf_link_hash_entry * | |
5115 | ppc64_elf_archive_symbol_lookup (bfd *abfd, | |
5116 | struct bfd_link_info *info, | |
5117 | const char *name) | |
5118 | { | |
5119 | struct elf_link_hash_entry *h; | |
5120 | char *dot_name; | |
5121 | size_t len; | |
5122 | ||
5123 | h = _bfd_elf_archive_symbol_lookup (abfd, info, name); | |
908b32fc AM |
5124 | if (h != NULL |
5125 | /* Don't return this sym if it is a fake function descriptor | |
5126 | created by add_symbol_adjust. */ | |
8c5b4e52 | 5127 | && !((struct ppc_link_hash_entry *) h)->fake) |
8387904d AM |
5128 | return h; |
5129 | ||
5130 | if (name[0] == '.') | |
5131 | return h; | |
5132 | ||
5133 | len = strlen (name); | |
5134 | dot_name = bfd_alloc (abfd, len + 2); | |
5135 | if (dot_name == NULL) | |
e99955cd | 5136 | return (struct elf_link_hash_entry *) -1; |
8387904d AM |
5137 | dot_name[0] = '.'; |
5138 | memcpy (dot_name + 1, name, len + 1); | |
5139 | h = _bfd_elf_archive_symbol_lookup (abfd, info, dot_name); | |
5140 | bfd_release (abfd, dot_name); | |
5141 | return h; | |
5142 | } | |
5143 | ||
5144 | /* This function satisfies all old ABI object references to ".bar" if a | |
99877b66 AM |
5145 | new ABI object defines "bar". Well, at least, undefined dot symbols |
5146 | are made weak. This stops later archive searches from including an | |
5147 | object if we already have a function descriptor definition. It also | |
35b0ce59 AM |
5148 | prevents the linker complaining about undefined symbols. |
5149 | We also check and correct mismatched symbol visibility here. The | |
5150 | most restrictive visibility of the function descriptor and the | |
5151 | function entry symbol is used. */ | |
8387904d AM |
5152 | |
5153 | static bfd_boolean | |
b3fac117 | 5154 | add_symbol_adjust (struct ppc_link_hash_entry *eh, struct bfd_link_info *info) |
8387904d | 5155 | { |
8387904d AM |
5156 | struct ppc_link_hash_table *htab; |
5157 | struct ppc_link_hash_entry *fdh; | |
5158 | ||
b3fac117 AM |
5159 | if (eh->elf.root.type == bfd_link_hash_warning) |
5160 | eh = (struct ppc_link_hash_entry *) eh->elf.root.u.i.link; | |
8387904d | 5161 | |
8400d40d AM |
5162 | if (eh->elf.root.type == bfd_link_hash_indirect) |
5163 | return TRUE; | |
5164 | ||
b3fac117 AM |
5165 | if (eh->elf.root.root.string[0] != '.') |
5166 | abort (); | |
8387904d | 5167 | |
b3fac117 | 5168 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
5169 | if (htab == NULL) |
5170 | return FALSE; | |
5171 | ||
b31867b6 | 5172 | fdh = lookup_fdh (eh, htab); |
8c5b4e52 AM |
5173 | if (fdh == NULL |
5174 | && !bfd_link_relocatable (info) | |
5175 | && (eh->elf.root.type == bfd_link_hash_undefined | |
5176 | || eh->elf.root.type == bfd_link_hash_undefweak) | |
5177 | && eh->elf.ref_regular) | |
5178 | { | |
5179 | /* Make an undefined function descriptor sym, in order to | |
5180 | pull in an --as-needed shared lib. Archives are handled | |
5181 | elsewhere. */ | |
5182 | fdh = make_fdh (info, eh); | |
5183 | if (fdh == NULL) | |
5184 | return FALSE; | |
bb700d78 | 5185 | } |
8c5b4e52 AM |
5186 | |
5187 | if (fdh != NULL) | |
8387904d | 5188 | { |
35b0ce59 AM |
5189 | unsigned entry_vis = ELF_ST_VISIBILITY (eh->elf.other) - 1; |
5190 | unsigned descr_vis = ELF_ST_VISIBILITY (fdh->elf.other) - 1; | |
8c5b4e52 AM |
5191 | |
5192 | /* Make both descriptor and entry symbol have the most | |
5193 | constraining visibility of either symbol. */ | |
35b0ce59 AM |
5194 | if (entry_vis < descr_vis) |
5195 | fdh->elf.other += entry_vis - descr_vis; | |
5196 | else if (entry_vis > descr_vis) | |
5197 | eh->elf.other += descr_vis - entry_vis; | |
5198 | ||
8c5b4e52 AM |
5199 | /* Propagate reference flags from entry symbol to function |
5200 | descriptor symbol. */ | |
bc4e12de | 5201 | fdh->elf.root.non_ir_ref_regular |= eh->elf.root.non_ir_ref_regular; |
4070765b | 5202 | fdh->elf.root.non_ir_ref_dynamic |= eh->elf.root.non_ir_ref_dynamic; |
8c5b4e52 AM |
5203 | fdh->elf.ref_regular |= eh->elf.ref_regular; |
5204 | fdh->elf.ref_regular_nonweak |= eh->elf.ref_regular_nonweak; | |
5205 | ||
5206 | if (!fdh->elf.forced_local | |
5207 | && fdh->elf.dynindx == -1 | |
5208 | && fdh->elf.versioned != versioned_hidden | |
5209 | && (bfd_link_dll (info) | |
5210 | || fdh->elf.def_dynamic | |
5211 | || fdh->elf.ref_dynamic) | |
5212 | && (eh->elf.ref_regular | |
5213 | || eh->elf.def_regular)) | |
5214 | { | |
5215 | if (! bfd_elf_link_record_dynamic_symbol (info, &fdh->elf)) | |
5216 | return FALSE; | |
35b0ce59 | 5217 | } |
8387904d | 5218 | } |
99877b66 | 5219 | |
8387904d AM |
5220 | return TRUE; |
5221 | } | |
5222 | ||
f6c7c3e8 AM |
5223 | /* Set up opd section info and abiversion for IBFD, and process list |
5224 | of dot-symbols we made in link_hash_newfunc. */ | |
b3fac117 | 5225 | |
8387904d | 5226 | static bfd_boolean |
f6c7c3e8 | 5227 | ppc64_elf_before_check_relocs (bfd *ibfd, struct bfd_link_info *info) |
8387904d | 5228 | { |
99877b66 | 5229 | struct ppc_link_hash_table *htab; |
b3fac117 | 5230 | struct ppc_link_hash_entry **p, *eh; |
459609d6 | 5231 | asection *opd = bfd_get_section_by_name (ibfd, ".opd"); |
433817dd | 5232 | |
459609d6 | 5233 | if (opd != NULL && opd->size != 0) |
b3fac117 | 5234 | { |
b9399fcf AM |
5235 | BFD_ASSERT (ppc64_elf_section_data (opd)->sec_type == sec_normal); |
5236 | ppc64_elf_section_data (opd)->sec_type = sec_opd; | |
5237 | ||
459609d6 AM |
5238 | if (abiversion (ibfd) == 0) |
5239 | set_abiversion (ibfd, 1); | |
8a2058b5 | 5240 | else if (abiversion (ibfd) >= 2) |
f6c7c3e8 | 5241 | { |
695344c0 | 5242 | /* xgettext:c-format */ |
cf97bcb0 AM |
5243 | _bfd_error_handler (_("%pB .opd not allowed in ABI version %d"), |
5244 | ibfd, abiversion (ibfd)); | |
459609d6 AM |
5245 | bfd_set_error (bfd_error_bad_value); |
5246 | return FALSE; | |
f6c7c3e8 | 5247 | } |
b9399fcf | 5248 | } |
f6c7c3e8 | 5249 | |
b9399fcf AM |
5250 | if (is_ppc64_elf (info->output_bfd)) |
5251 | { | |
5252 | /* For input files without an explicit abiversion in e_flags | |
5253 | we should have flagged any with symbol st_other bits set | |
5254 | as ELFv1 and above flagged those with .opd as ELFv2. | |
5255 | Set the output abiversion if not yet set, and for any input | |
5256 | still ambiguous, take its abiversion from the output. | |
5257 | Differences in ABI are reported later. */ | |
5258 | if (abiversion (info->output_bfd) == 0) | |
5259 | set_abiversion (info->output_bfd, abiversion (ibfd)); | |
5260 | else if (abiversion (ibfd) == 0) | |
5261 | set_abiversion (ibfd, abiversion (info->output_bfd)); | |
b3fac117 AM |
5262 | } |
5263 | ||
459609d6 AM |
5264 | htab = ppc_hash_table (info); |
5265 | if (htab == NULL) | |
b9399fcf | 5266 | return TRUE; |
459609d6 | 5267 | |
b9399fcf AM |
5268 | if (opd != NULL && opd->size != 0 |
5269 | && (ibfd->flags & DYNAMIC) == 0 | |
5270 | && (opd->flags & SEC_RELOC) != 0 | |
5271 | && opd->reloc_count != 0 | |
5272 | && !bfd_is_abs_section (opd->output_section) | |
5273 | && info->gc_sections) | |
5274 | { | |
5275 | /* Garbage collection needs some extra help with .opd sections. | |
5276 | We don't want to necessarily keep everything referenced by | |
5277 | relocs in .opd, as that would keep all functions. Instead, | |
5278 | if we reference an .opd symbol (a function descriptor), we | |
5279 | want to keep the function code symbol's section. This is | |
5280 | easy for global symbols, but for local syms we need to keep | |
5281 | information about the associated function section. */ | |
5282 | bfd_size_type amt; | |
5283 | asection **opd_sym_map; | |
5284 | Elf_Internal_Shdr *symtab_hdr; | |
5285 | Elf_Internal_Rela *relocs, *rel_end, *rel; | |
5286 | ||
5287 | amt = OPD_NDX (opd->size) * sizeof (*opd_sym_map); | |
5288 | opd_sym_map = bfd_zalloc (ibfd, amt); | |
5289 | if (opd_sym_map == NULL) | |
5290 | return FALSE; | |
5291 | ppc64_elf_section_data (opd)->u.opd.func_sec = opd_sym_map; | |
5292 | relocs = _bfd_elf_link_read_relocs (ibfd, opd, NULL, NULL, | |
5293 | info->keep_memory); | |
5294 | if (relocs == NULL) | |
5295 | return FALSE; | |
5296 | symtab_hdr = &elf_symtab_hdr (ibfd); | |
5297 | rel_end = relocs + opd->reloc_count - 1; | |
5298 | for (rel = relocs; rel < rel_end; rel++) | |
5299 | { | |
5300 | enum elf_ppc64_reloc_type r_type = ELF64_R_TYPE (rel->r_info); | |
5301 | unsigned long r_symndx = ELF64_R_SYM (rel->r_info); | |
5302 | ||
5303 | if (r_type == R_PPC64_ADDR64 | |
5304 | && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC | |
5305 | && r_symndx < symtab_hdr->sh_info) | |
5306 | { | |
5307 | Elf_Internal_Sym *isym; | |
5308 | asection *s; | |
5309 | ||
5310 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, ibfd, r_symndx); | |
5311 | if (isym == NULL) | |
5312 | { | |
5313 | if (elf_section_data (opd)->relocs != relocs) | |
5314 | free (relocs); | |
5315 | return FALSE; | |
5316 | } | |
5317 | ||
5318 | s = bfd_section_from_elf_index (ibfd, isym->st_shndx); | |
5319 | if (s != NULL && s != opd) | |
5320 | opd_sym_map[OPD_NDX (rel->r_offset)] = s; | |
5321 | } | |
5322 | } | |
5323 | if (elf_section_data (opd)->relocs != relocs) | |
5324 | free (relocs); | |
5325 | } | |
459609d6 AM |
5326 | |
5327 | p = &htab->dot_syms; | |
5328 | while ((eh = *p) != NULL) | |
5329 | { | |
5330 | *p = NULL; | |
5331 | if (&eh->elf == htab->elf.hgot) | |
5332 | ; | |
5333 | else if (htab->elf.hgot == NULL | |
5334 | && strcmp (eh->elf.root.root.string, ".TOC.") == 0) | |
5335 | htab->elf.hgot = &eh->elf; | |
8c5b4e52 AM |
5336 | else if (abiversion (ibfd) <= 1) |
5337 | { | |
5338 | htab->need_func_desc_adj = 1; | |
5339 | if (!add_symbol_adjust (eh, info)) | |
5340 | return FALSE; | |
5341 | } | |
459609d6 AM |
5342 | p = &eh->u.next_dot_sym; |
5343 | } | |
b3fac117 | 5344 | return TRUE; |
8387904d AM |
5345 | } |
5346 | ||
97fed1c9 JJ |
5347 | /* Undo hash table changes when an --as-needed input file is determined |
5348 | not to be needed. */ | |
5349 | ||
5350 | static bfd_boolean | |
e5034e59 AM |
5351 | ppc64_elf_notice_as_needed (bfd *ibfd, |
5352 | struct bfd_link_info *info, | |
5353 | enum notice_asneeded_action act) | |
97fed1c9 | 5354 | { |
e5034e59 AM |
5355 | if (act == notice_not_needed) |
5356 | { | |
5357 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
4dfe6ac6 | 5358 | |
e5034e59 AM |
5359 | if (htab == NULL) |
5360 | return FALSE; | |
4dfe6ac6 | 5361 | |
e5034e59 AM |
5362 | htab->dot_syms = NULL; |
5363 | } | |
5364 | return _bfd_elf_notice_as_needed (ibfd, info, act); | |
97fed1c9 JJ |
5365 | } |
5366 | ||
aa374f67 AM |
5367 | /* If --just-symbols against a final linked binary, then assume we need |
5368 | toc adjusting stubs when calling functions defined there. */ | |
5369 | ||
5370 | static void | |
5371 | ppc64_elf_link_just_syms (asection *sec, struct bfd_link_info *info) | |
5372 | { | |
5373 | if ((sec->flags & SEC_CODE) != 0 | |
5374 | && (sec->owner->flags & (EXEC_P | DYNAMIC)) != 0 | |
5375 | && is_ppc64_elf (sec->owner)) | |
5376 | { | |
2c3f079f AM |
5377 | if (abiversion (sec->owner) >= 2 |
5378 | || bfd_get_section_by_name (sec->owner, ".opd") != NULL) | |
aa374f67 AM |
5379 | sec->has_toc_reloc = 1; |
5380 | } | |
5381 | _bfd_elf_link_just_syms (sec, info); | |
5382 | } | |
5383 | ||
e054468f | 5384 | static struct plt_entry ** |
4ce794b7 AM |
5385 | update_local_sym_info (bfd *abfd, Elf_Internal_Shdr *symtab_hdr, |
5386 | unsigned long r_symndx, bfd_vma r_addend, int tls_type) | |
411e1bfb AM |
5387 | { |
5388 | struct got_entry **local_got_ents = elf_local_got_ents (abfd); | |
e054468f | 5389 | struct plt_entry **local_plt; |
f961d9dd | 5390 | unsigned char *local_got_tls_masks; |
411e1bfb AM |
5391 | |
5392 | if (local_got_ents == NULL) | |
5393 | { | |
5394 | bfd_size_type size = symtab_hdr->sh_info; | |
5395 | ||
e054468f AM |
5396 | size *= (sizeof (*local_got_ents) |
5397 | + sizeof (*local_plt) | |
5398 | + sizeof (*local_got_tls_masks)); | |
4ce794b7 | 5399 | local_got_ents = bfd_zalloc (abfd, size); |
411e1bfb | 5400 | if (local_got_ents == NULL) |
e054468f | 5401 | return NULL; |
411e1bfb AM |
5402 | elf_local_got_ents (abfd) = local_got_ents; |
5403 | } | |
5404 | ||
37da22e5 | 5405 | if ((tls_type & (NON_GOT | TLS_EXPLICIT)) == 0) |
411e1bfb AM |
5406 | { |
5407 | struct got_entry *ent; | |
5408 | ||
5409 | for (ent = local_got_ents[r_symndx]; ent != NULL; ent = ent->next) | |
e717da7e AM |
5410 | if (ent->addend == r_addend |
5411 | && ent->owner == abfd | |
5412 | && ent->tls_type == tls_type) | |
411e1bfb AM |
5413 | break; |
5414 | if (ent == NULL) | |
5415 | { | |
5416 | bfd_size_type amt = sizeof (*ent); | |
4ce794b7 | 5417 | ent = bfd_alloc (abfd, amt); |
411e1bfb AM |
5418 | if (ent == NULL) |
5419 | return FALSE; | |
5420 | ent->next = local_got_ents[r_symndx]; | |
5421 | ent->addend = r_addend; | |
e717da7e | 5422 | ent->owner = abfd; |
411e1bfb | 5423 | ent->tls_type = tls_type; |
927be08e | 5424 | ent->is_indirect = FALSE; |
411e1bfb AM |
5425 | ent->got.refcount = 0; |
5426 | local_got_ents[r_symndx] = ent; | |
5427 | } | |
5428 | ent->got.refcount += 1; | |
5429 | } | |
5430 | ||
e054468f | 5431 | local_plt = (struct plt_entry **) (local_got_ents + symtab_hdr->sh_info); |
f961d9dd | 5432 | local_got_tls_masks = (unsigned char *) (local_plt + symtab_hdr->sh_info); |
37da22e5 | 5433 | local_got_tls_masks[r_symndx] |= tls_type & 0xff; |
e054468f AM |
5434 | |
5435 | return local_plt + r_symndx; | |
65f38f15 AM |
5436 | } |
5437 | ||
411e1bfb | 5438 | static bfd_boolean |
e054468f | 5439 | update_plt_info (bfd *abfd, struct plt_entry **plist, bfd_vma addend) |
1e2f5b6e | 5440 | { |
411e1bfb | 5441 | struct plt_entry *ent; |
1e2f5b6e | 5442 | |
e054468f | 5443 | for (ent = *plist; ent != NULL; ent = ent->next) |
411e1bfb AM |
5444 | if (ent->addend == addend) |
5445 | break; | |
5446 | if (ent == NULL) | |
1e2f5b6e | 5447 | { |
411e1bfb | 5448 | bfd_size_type amt = sizeof (*ent); |
4ce794b7 | 5449 | ent = bfd_alloc (abfd, amt); |
411e1bfb AM |
5450 | if (ent == NULL) |
5451 | return FALSE; | |
e054468f | 5452 | ent->next = *plist; |
411e1bfb AM |
5453 | ent->addend = addend; |
5454 | ent->plt.refcount = 0; | |
e054468f | 5455 | *plist = ent; |
1e2f5b6e | 5456 | } |
411e1bfb | 5457 | ent->plt.refcount += 1; |
b34976b6 | 5458 | return TRUE; |
1e2f5b6e AM |
5459 | } |
5460 | ||
e054468f AM |
5461 | static bfd_boolean |
5462 | is_branch_reloc (enum elf_ppc64_reloc_type r_type) | |
5463 | { | |
5464 | return (r_type == R_PPC64_REL24 | |
5465 | || r_type == R_PPC64_REL14 | |
5466 | || r_type == R_PPC64_REL14_BRTAKEN | |
5467 | || r_type == R_PPC64_REL14_BRNTAKEN | |
5468 | || r_type == R_PPC64_ADDR24 | |
5469 | || r_type == R_PPC64_ADDR14 | |
5470 | || r_type == R_PPC64_ADDR14_BRTAKEN | |
23cedd1d AM |
5471 | || r_type == R_PPC64_ADDR14_BRNTAKEN |
5472 | || r_type == R_PPC64_PLTCALL); | |
5473 | } | |
5474 | ||
5475 | /* Relocs on inline plt call sequence insns prior to the call. */ | |
5476 | ||
5477 | static bfd_boolean | |
5478 | is_plt_seq_reloc (enum elf_ppc64_reloc_type r_type) | |
5479 | { | |
5480 | return (r_type == R_PPC64_PLT16_HA | |
5481 | || r_type == R_PPC64_PLT16_HI | |
5482 | || r_type == R_PPC64_PLT16_LO | |
5483 | || r_type == R_PPC64_PLT16_LO_DS | |
5484 | || r_type == R_PPC64_PLTSEQ); | |
e054468f AM |
5485 | } |
5486 | ||
5bd4f169 | 5487 | /* Look through the relocs for a section during the first phase, and |
65f38f15 | 5488 | calculate needed space in the global offset table, procedure |
5d1634d7 | 5489 | linkage table, and dynamic reloc sections. */ |
5bd4f169 | 5490 | |
b34976b6 | 5491 | static bfd_boolean |
4ce794b7 AM |
5492 | ppc64_elf_check_relocs (bfd *abfd, struct bfd_link_info *info, |
5493 | asection *sec, const Elf_Internal_Rela *relocs) | |
5bd4f169 | 5494 | { |
65f38f15 | 5495 | struct ppc_link_hash_table *htab; |
5bd4f169 | 5496 | Elf_Internal_Shdr *symtab_hdr; |
c7e2358a | 5497 | struct elf_link_hash_entry **sym_hashes; |
5bd4f169 AM |
5498 | const Elf_Internal_Rela *rel; |
5499 | const Elf_Internal_Rela *rel_end; | |
5bd4f169 | 5500 | asection *sreloc; |
3a71aa26 | 5501 | struct elf_link_hash_entry *tga, *dottga; |
b9399fcf | 5502 | bfd_boolean is_opd; |
5bd4f169 | 5503 | |
0e1862bb | 5504 | if (bfd_link_relocatable (info)) |
b34976b6 | 5505 | return TRUE; |
5bd4f169 | 5506 | |
680a3378 AM |
5507 | /* Don't do anything special with non-loaded, non-alloced sections. |
5508 | In particular, any relocs in such sections should not affect GOT | |
5509 | and PLT reference counting (ie. we don't allow them to create GOT | |
5510 | or PLT entries), there's no possibility or desire to optimize TLS | |
5511 | relocs, and there's not much point in propagating relocs to shared | |
5512 | libs that the dynamic linker won't relocate. */ | |
5513 | if ((sec->flags & SEC_ALLOC) == 0) | |
5514 | return TRUE; | |
5515 | ||
0c8d6e5c | 5516 | BFD_ASSERT (is_ppc64_elf (abfd)); |
0ffa91dd | 5517 | |
65f38f15 | 5518 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
5519 | if (htab == NULL) |
5520 | return FALSE; | |
5521 | ||
3a71aa26 AM |
5522 | tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr", |
5523 | FALSE, FALSE, TRUE); | |
5524 | dottga = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr", | |
5525 | FALSE, FALSE, TRUE); | |
0ffa91dd | 5526 | symtab_hdr = &elf_symtab_hdr (abfd); |
5bd4f169 | 5527 | sym_hashes = elf_sym_hashes (abfd); |
5bd4f169 | 5528 | sreloc = NULL; |
b9399fcf | 5529 | is_opd = ppc64_elf_section_data (sec)->sec_type == sec_opd; |
5bd4f169 AM |
5530 | rel_end = relocs + sec->reloc_count; |
5531 | for (rel = relocs; rel < rel_end; rel++) | |
5532 | { | |
5533 | unsigned long r_symndx; | |
5534 | struct elf_link_hash_entry *h; | |
04c9666a | 5535 | enum elf_ppc64_reloc_type r_type; |
727fc41e | 5536 | int tls_type; |
7c8fe5c4 | 5537 | struct _ppc64_elf_section_data *ppc64_sec; |
cbf95972 | 5538 | struct plt_entry **ifunc, **plt_list; |
5bd4f169 AM |
5539 | |
5540 | r_symndx = ELF64_R_SYM (rel->r_info); | |
5541 | if (r_symndx < symtab_hdr->sh_info) | |
5542 | h = NULL; | |
5543 | else | |
973a3492 L |
5544 | { |
5545 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
b31867b6 | 5546 | h = elf_follow_link (h); |
1c865ab2 AM |
5547 | |
5548 | if (h == htab->elf.hgot) | |
5549 | sec->has_toc_reloc = 1; | |
973a3492 | 5550 | } |
5bd4f169 | 5551 | |
727fc41e | 5552 | tls_type = 0; |
e054468f | 5553 | ifunc = NULL; |
25f23106 AM |
5554 | if (h != NULL) |
5555 | { | |
5556 | if (h->type == STT_GNU_IFUNC) | |
5557 | { | |
5558 | h->needs_plt = 1; | |
5559 | ifunc = &h->plt.plist; | |
5560 | } | |
5561 | } | |
5562 | else | |
5563 | { | |
5564 | Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache, | |
5565 | abfd, r_symndx); | |
5566 | if (isym == NULL) | |
5567 | return FALSE; | |
5568 | ||
5569 | if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC) | |
5570 | { | |
5571 | ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
37da22e5 AM |
5572 | rel->r_addend, |
5573 | NON_GOT | PLT_IFUNC); | |
25f23106 AM |
5574 | if (ifunc == NULL) |
5575 | return FALSE; | |
5576 | } | |
5577 | } | |
727fc41e | 5578 | |
cbf95972 | 5579 | r_type = ELF64_R_TYPE (rel->r_info); |
a33d1f77 | 5580 | switch (r_type) |
5bd4f169 | 5581 | { |
727fc41e AM |
5582 | case R_PPC64_TLSGD: |
5583 | case R_PPC64_TLSLD: | |
5584 | /* These special tls relocs tie a call to __tls_get_addr with | |
5585 | its parameter symbol. */ | |
37da22e5 AM |
5586 | if (h != NULL) |
5587 | ((struct ppc_link_hash_entry *) h)->tls_mask |= TLS_TLS | TLS_MARK; | |
5588 | else | |
5589 | if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
5590 | rel->r_addend, | |
5591 | NON_GOT | TLS_TLS | TLS_MARK)) | |
5592 | return FALSE; | |
5593 | sec->has_tls_reloc = 1; | |
727fc41e AM |
5594 | break; |
5595 | ||
411e1bfb AM |
5596 | case R_PPC64_GOT_TLSLD16: |
5597 | case R_PPC64_GOT_TLSLD16_LO: | |
5598 | case R_PPC64_GOT_TLSLD16_HI: | |
5599 | case R_PPC64_GOT_TLSLD16_HA: | |
951fd09b | 5600 | tls_type = TLS_TLS | TLS_LD; |
411e1bfb AM |
5601 | goto dogottls; |
5602 | ||
5603 | case R_PPC64_GOT_TLSGD16: | |
5604 | case R_PPC64_GOT_TLSGD16_LO: | |
5605 | case R_PPC64_GOT_TLSGD16_HI: | |
5606 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b | 5607 | tls_type = TLS_TLS | TLS_GD; |
411e1bfb AM |
5608 | goto dogottls; |
5609 | ||
5610 | case R_PPC64_GOT_TPREL16_DS: | |
5611 | case R_PPC64_GOT_TPREL16_LO_DS: | |
5612 | case R_PPC64_GOT_TPREL16_HI: | |
5613 | case R_PPC64_GOT_TPREL16_HA: | |
7c8bbca5 | 5614 | if (bfd_link_dll (info)) |
411e1bfb AM |
5615 | info->flags |= DF_STATIC_TLS; |
5616 | tls_type = TLS_TLS | TLS_TPREL; | |
5617 | goto dogottls; | |
5618 | ||
5619 | case R_PPC64_GOT_DTPREL16_DS: | |
5620 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
5621 | case R_PPC64_GOT_DTPREL16_HI: | |
5622 | case R_PPC64_GOT_DTPREL16_HA: | |
5623 | tls_type = TLS_TLS | TLS_DTPREL; | |
5624 | dogottls: | |
5625 | sec->has_tls_reloc = 1; | |
1a0670f3 | 5626 | /* Fall through */ |
411e1bfb | 5627 | |
5bd4f169 | 5628 | case R_PPC64_GOT16: |
5bd4f169 | 5629 | case R_PPC64_GOT16_DS: |
65f38f15 AM |
5630 | case R_PPC64_GOT16_HA: |
5631 | case R_PPC64_GOT16_HI: | |
5632 | case R_PPC64_GOT16_LO: | |
5bd4f169 | 5633 | case R_PPC64_GOT16_LO_DS: |
65f38f15 | 5634 | /* This symbol requires a global offset table entry. */ |
4c52953f | 5635 | sec->has_toc_reloc = 1; |
33c0ec9d AM |
5636 | if (r_type == R_PPC64_GOT_TLSLD16 |
5637 | || r_type == R_PPC64_GOT_TLSGD16 | |
5638 | || r_type == R_PPC64_GOT_TPREL16_DS | |
5639 | || r_type == R_PPC64_GOT_DTPREL16_DS | |
5640 | || r_type == R_PPC64_GOT16 | |
5641 | || r_type == R_PPC64_GOT16_DS) | |
5642 | { | |
5643 | htab->do_multi_toc = 1; | |
d77c8a4b | 5644 | ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1; |
33c0ec9d AM |
5645 | } |
5646 | ||
e717da7e AM |
5647 | if (ppc64_elf_tdata (abfd)->got == NULL |
5648 | && !create_got_section (abfd, info)) | |
b34976b6 | 5649 | return FALSE; |
5bd4f169 AM |
5650 | |
5651 | if (h != NULL) | |
5652 | { | |
411e1bfb AM |
5653 | struct ppc_link_hash_entry *eh; |
5654 | struct got_entry *ent; | |
65f38f15 | 5655 | |
411e1bfb AM |
5656 | eh = (struct ppc_link_hash_entry *) h; |
5657 | for (ent = eh->elf.got.glist; ent != NULL; ent = ent->next) | |
5658 | if (ent->addend == rel->r_addend | |
e717da7e | 5659 | && ent->owner == abfd |
411e1bfb AM |
5660 | && ent->tls_type == tls_type) |
5661 | break; | |
5662 | if (ent == NULL) | |
5bd4f169 | 5663 | { |
411e1bfb | 5664 | bfd_size_type amt = sizeof (*ent); |
4ce794b7 | 5665 | ent = bfd_alloc (abfd, amt); |
411e1bfb | 5666 | if (ent == NULL) |
b34976b6 | 5667 | return FALSE; |
411e1bfb AM |
5668 | ent->next = eh->elf.got.glist; |
5669 | ent->addend = rel->r_addend; | |
e717da7e | 5670 | ent->owner = abfd; |
411e1bfb | 5671 | ent->tls_type = tls_type; |
927be08e | 5672 | ent->is_indirect = FALSE; |
411e1bfb AM |
5673 | ent->got.refcount = 0; |
5674 | eh->elf.got.glist = ent; | |
5bd4f169 | 5675 | } |
411e1bfb | 5676 | ent->got.refcount += 1; |
e7b938ca | 5677 | eh->tls_mask |= tls_type; |
5bd4f169 | 5678 | } |
411e1bfb AM |
5679 | else |
5680 | /* This is a global offset table entry for a local symbol. */ | |
5681 | if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
5682 | rel->r_addend, tls_type)) | |
5683 | return FALSE; | |
a345bc8d AM |
5684 | |
5685 | /* We may also need a plt entry if the symbol turns out to be | |
5686 | an ifunc. */ | |
0e1862bb | 5687 | if (h != NULL && !bfd_link_pic (info) && abiversion (abfd) != 1) |
a345bc8d AM |
5688 | { |
5689 | if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend)) | |
5690 | return FALSE; | |
5691 | } | |
5bd4f169 AM |
5692 | break; |
5693 | ||
5bd4f169 | 5694 | case R_PPC64_PLT16_HA: |
65f38f15 AM |
5695 | case R_PPC64_PLT16_HI: |
5696 | case R_PPC64_PLT16_LO: | |
08be3224 | 5697 | case R_PPC64_PLT16_LO_DS: |
65f38f15 AM |
5698 | case R_PPC64_PLT32: |
5699 | case R_PPC64_PLT64: | |
cbf95972 AM |
5700 | /* This symbol requires a procedure linkage table entry. */ |
5701 | plt_list = ifunc; | |
5702 | if (h != NULL) | |
e054468f | 5703 | { |
e054468f AM |
5704 | h->needs_plt = 1; |
5705 | if (h->root.root.string[0] == '.' | |
5706 | && h->root.root.string[1] != '\0') | |
5707 | ((struct ppc_link_hash_entry *) h)->is_func = 1; | |
2d7ad24e | 5708 | ((struct ppc_link_hash_entry *) h)->tls_mask |= PLT_KEEP; |
cbf95972 AM |
5709 | plt_list = &h->plt.plist; |
5710 | } | |
5711 | if (plt_list == NULL) | |
2d7ad24e AM |
5712 | plt_list = update_local_sym_info (abfd, symtab_hdr, r_symndx, |
5713 | rel->r_addend, | |
5714 | NON_GOT | PLT_KEEP); | |
cbf95972 AM |
5715 | if (!update_plt_info (abfd, plt_list, rel->r_addend)) |
5716 | return FALSE; | |
5bd4f169 AM |
5717 | break; |
5718 | ||
5719 | /* The following relocations don't need to propagate the | |
5720 | relocation if linking a shared object since they are | |
5721 | section relative. */ | |
5722 | case R_PPC64_SECTOFF: | |
5723 | case R_PPC64_SECTOFF_LO: | |
5724 | case R_PPC64_SECTOFF_HI: | |
5725 | case R_PPC64_SECTOFF_HA: | |
5726 | case R_PPC64_SECTOFF_DS: | |
5727 | case R_PPC64_SECTOFF_LO_DS: | |
411e1bfb AM |
5728 | case R_PPC64_DTPREL16: |
5729 | case R_PPC64_DTPREL16_LO: | |
5730 | case R_PPC64_DTPREL16_HI: | |
5731 | case R_PPC64_DTPREL16_HA: | |
5732 | case R_PPC64_DTPREL16_DS: | |
5733 | case R_PPC64_DTPREL16_LO_DS: | |
f9c6b907 AM |
5734 | case R_PPC64_DTPREL16_HIGH: |
5735 | case R_PPC64_DTPREL16_HIGHA: | |
411e1bfb AM |
5736 | case R_PPC64_DTPREL16_HIGHER: |
5737 | case R_PPC64_DTPREL16_HIGHERA: | |
5738 | case R_PPC64_DTPREL16_HIGHEST: | |
5739 | case R_PPC64_DTPREL16_HIGHESTA: | |
5bd4f169 AM |
5740 | break; |
5741 | ||
ad8e1ba5 | 5742 | /* Nor do these. */ |
25f23106 AM |
5743 | case R_PPC64_REL16: |
5744 | case R_PPC64_REL16_LO: | |
5745 | case R_PPC64_REL16_HI: | |
5746 | case R_PPC64_REL16_HA: | |
a680de9a | 5747 | case R_PPC64_REL16DX_HA: |
25f23106 AM |
5748 | break; |
5749 | ||
45965137 AM |
5750 | /* Not supported as a dynamic relocation. */ |
5751 | case R_PPC64_ADDR64_LOCAL: | |
0e1862bb | 5752 | if (bfd_link_pic (info)) |
45965137 AM |
5753 | { |
5754 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) | |
5755 | ppc_howto_init (); | |
695344c0 | 5756 | /* xgettext:c-format */ |
174d0a74 | 5757 | info->callbacks->einfo (_("%H: %s reloc unsupported " |
cf97bcb0 | 5758 | "in shared libraries and PIEs\n"), |
45965137 AM |
5759 | abfd, sec, rel->r_offset, |
5760 | ppc64_elf_howto_table[r_type]->name); | |
5761 | bfd_set_error (bfd_error_bad_value); | |
5762 | return FALSE; | |
5763 | } | |
5764 | break; | |
5765 | ||
ad8e1ba5 | 5766 | case R_PPC64_TOC16: |
33c0ec9d AM |
5767 | case R_PPC64_TOC16_DS: |
5768 | htab->do_multi_toc = 1; | |
d77c8a4b | 5769 | ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1; |
1a0670f3 | 5770 | /* Fall through. */ |
ad8e1ba5 AM |
5771 | case R_PPC64_TOC16_LO: |
5772 | case R_PPC64_TOC16_HI: | |
5773 | case R_PPC64_TOC16_HA: | |
ad8e1ba5 | 5774 | case R_PPC64_TOC16_LO_DS: |
4c52953f | 5775 | sec->has_toc_reloc = 1; |
ad8e1ba5 AM |
5776 | break; |
5777 | ||
006589cf AM |
5778 | /* Marker reloc. */ |
5779 | case R_PPC64_ENTRY: | |
5780 | break; | |
5781 | ||
5bd4f169 AM |
5782 | /* This relocation describes the C++ object vtable hierarchy. |
5783 | Reconstruct it for later use during GC. */ | |
5784 | case R_PPC64_GNU_VTINHERIT: | |
c152c796 | 5785 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
b34976b6 | 5786 | return FALSE; |
5bd4f169 AM |
5787 | break; |
5788 | ||
5789 | /* This relocation describes which C++ vtable entries are actually | |
5790 | used. Record for later use during GC. */ | |
5791 | case R_PPC64_GNU_VTENTRY: | |
d17e0c6e JB |
5792 | BFD_ASSERT (h != NULL); |
5793 | if (h != NULL | |
5794 | && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) | |
b34976b6 | 5795 | return FALSE; |
5bd4f169 AM |
5796 | break; |
5797 | ||
721956f4 AM |
5798 | case R_PPC64_REL14: |
5799 | case R_PPC64_REL14_BRTAKEN: | |
5800 | case R_PPC64_REL14_BRNTAKEN: | |
220c76dd AM |
5801 | { |
5802 | asection *dest = NULL; | |
5803 | ||
5804 | /* Heuristic: If jumping outside our section, chances are | |
5805 | we are going to need a stub. */ | |
5806 | if (h != NULL) | |
5807 | { | |
5808 | /* If the sym is weak it may be overridden later, so | |
5809 | don't assume we know where a weak sym lives. */ | |
5810 | if (h->root.type == bfd_link_hash_defined) | |
5811 | dest = h->root.u.def.section; | |
5812 | } | |
5813 | else | |
87d72d41 AM |
5814 | { |
5815 | Elf_Internal_Sym *isym; | |
5816 | ||
5817 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, | |
5818 | abfd, r_symndx); | |
5819 | if (isym == NULL) | |
5820 | return FALSE; | |
5821 | ||
5822 | dest = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
5823 | } | |
5824 | ||
220c76dd | 5825 | if (dest != sec) |
7c8fe5c4 | 5826 | ppc64_elf_section_data (sec)->has_14bit_branch = 1; |
220c76dd | 5827 | } |
3e04d765 AM |
5828 | goto rel24; |
5829 | ||
5830 | case R_PPC64_PLTCALL: | |
5831 | ppc64_elf_section_data (sec)->has_pltcall = 1; | |
721956f4 AM |
5832 | /* Fall through. */ |
5833 | ||
5d1634d7 | 5834 | case R_PPC64_REL24: |
3e04d765 | 5835 | rel24: |
cbf95972 AM |
5836 | plt_list = ifunc; |
5837 | if (h != NULL) | |
5d1634d7 | 5838 | { |
e054468f AM |
5839 | h->needs_plt = 1; |
5840 | if (h->root.root.string[0] == '.' | |
5841 | && h->root.root.string[1] != '\0') | |
5842 | ((struct ppc_link_hash_entry *) h)->is_func = 1; | |
cbf95972 | 5843 | |
3a71aa26 | 5844 | if (h == tga || h == dottga) |
cbf95972 AM |
5845 | { |
5846 | sec->has_tls_reloc = 1; | |
5847 | if (rel != relocs | |
5848 | && (ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSGD | |
5849 | || ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSLD)) | |
5850 | /* We have a new-style __tls_get_addr call with | |
5851 | a marker reloc. */ | |
5852 | ; | |
5853 | else | |
5854 | /* Mark this section as having an old-style call. */ | |
5855 | sec->has_tls_get_addr_call = 1; | |
5856 | } | |
5857 | plt_list = &h->plt.plist; | |
411e1bfb | 5858 | } |
cbf95972 AM |
5859 | |
5860 | /* We may need a .plt entry if the function this reloc | |
5861 | refers to is in a shared lib. */ | |
5862 | if (plt_list | |
5863 | && !update_plt_info (abfd, plt_list, rel->r_addend)) | |
5864 | return FALSE; | |
411e1bfb AM |
5865 | break; |
5866 | ||
cbf95972 AM |
5867 | case R_PPC64_ADDR14: |
5868 | case R_PPC64_ADDR14_BRNTAKEN: | |
5869 | case R_PPC64_ADDR14_BRTAKEN: | |
5870 | case R_PPC64_ADDR24: | |
5871 | goto dodyn; | |
5872 | ||
411e1bfb AM |
5873 | case R_PPC64_TPREL64: |
5874 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_TPREL; | |
7c8bbca5 | 5875 | if (bfd_link_dll (info)) |
411e1bfb AM |
5876 | info->flags |= DF_STATIC_TLS; |
5877 | goto dotlstoc; | |
5878 | ||
5879 | case R_PPC64_DTPMOD64: | |
5880 | if (rel + 1 < rel_end | |
5881 | && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64) | |
5882 | && rel[1].r_offset == rel->r_offset + 8) | |
951fd09b | 5883 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_GD; |
411e1bfb | 5884 | else |
951fd09b | 5885 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_LD; |
411e1bfb AM |
5886 | goto dotlstoc; |
5887 | ||
5888 | case R_PPC64_DTPREL64: | |
5889 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_DTPREL; | |
5890 | if (rel != relocs | |
5891 | && rel[-1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPMOD64) | |
5892 | && rel[-1].r_offset == rel->r_offset - 8) | |
5893 | /* This is the second reloc of a dtpmod, dtprel pair. | |
5894 | Don't mark with TLS_DTPREL. */ | |
5895 | goto dodyn; | |
5896 | ||
5897 | dotlstoc: | |
5898 | sec->has_tls_reloc = 1; | |
5899 | if (h != NULL) | |
5900 | { | |
5901 | struct ppc_link_hash_entry *eh; | |
5902 | eh = (struct ppc_link_hash_entry *) h; | |
e7b938ca | 5903 | eh->tls_mask |= tls_type; |
411e1bfb AM |
5904 | } |
5905 | else | |
5906 | if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
5907 | rel->r_addend, tls_type)) | |
5908 | return FALSE; | |
5909 | ||
7c8fe5c4 AM |
5910 | ppc64_sec = ppc64_elf_section_data (sec); |
5911 | if (ppc64_sec->sec_type != sec_toc) | |
411e1bfb | 5912 | { |
3a71aa26 AM |
5913 | bfd_size_type amt; |
5914 | ||
e7b938ca | 5915 | /* One extra to simplify get_tls_mask. */ |
3a71aa26 AM |
5916 | amt = sec->size * sizeof (unsigned) / 8 + sizeof (unsigned); |
5917 | ppc64_sec->u.toc.symndx = bfd_zalloc (abfd, amt); | |
5918 | if (ppc64_sec->u.toc.symndx == NULL) | |
5919 | return FALSE; | |
5920 | amt = sec->size * sizeof (bfd_vma) / 8; | |
5921 | ppc64_sec->u.toc.add = bfd_zalloc (abfd, amt); | |
5922 | if (ppc64_sec->u.toc.add == NULL) | |
411e1bfb | 5923 | return FALSE; |
7c8fe5c4 AM |
5924 | BFD_ASSERT (ppc64_sec->sec_type == sec_normal); |
5925 | ppc64_sec->sec_type = sec_toc; | |
411e1bfb AM |
5926 | } |
5927 | BFD_ASSERT (rel->r_offset % 8 == 0); | |
3a71aa26 AM |
5928 | ppc64_sec->u.toc.symndx[rel->r_offset / 8] = r_symndx; |
5929 | ppc64_sec->u.toc.add[rel->r_offset / 8] = rel->r_addend; | |
951fd09b AM |
5930 | |
5931 | /* Mark the second slot of a GD or LD entry. | |
5932 | -1 to indicate GD and -2 to indicate LD. */ | |
5933 | if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_GD)) | |
3a71aa26 | 5934 | ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -1; |
951fd09b | 5935 | else if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_LD)) |
3a71aa26 | 5936 | ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -2; |
411e1bfb AM |
5937 | goto dodyn; |
5938 | ||
5939 | case R_PPC64_TPREL16: | |
5940 | case R_PPC64_TPREL16_LO: | |
5941 | case R_PPC64_TPREL16_HI: | |
5942 | case R_PPC64_TPREL16_HA: | |
5943 | case R_PPC64_TPREL16_DS: | |
5944 | case R_PPC64_TPREL16_LO_DS: | |
f9c6b907 AM |
5945 | case R_PPC64_TPREL16_HIGH: |
5946 | case R_PPC64_TPREL16_HIGHA: | |
411e1bfb AM |
5947 | case R_PPC64_TPREL16_HIGHER: |
5948 | case R_PPC64_TPREL16_HIGHERA: | |
5949 | case R_PPC64_TPREL16_HIGHEST: | |
5950 | case R_PPC64_TPREL16_HIGHESTA: | |
7c8bbca5 AM |
5951 | if (bfd_link_dll (info)) |
5952 | info->flags |= DF_STATIC_TLS; | |
5953 | goto dodyn; | |
5d1634d7 | 5954 | |
e86ce104 | 5955 | case R_PPC64_ADDR64: |
b9399fcf | 5956 | if (is_opd |
1e2f5b6e | 5957 | && rel + 1 < rel_end |
4ce794b7 | 5958 | && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC) |
1e2f5b6e | 5959 | { |
8387904d | 5960 | if (h != NULL) |
8c5b4e52 | 5961 | ((struct ppc_link_hash_entry *) h)->is_func = 1; |
1e2f5b6e | 5962 | } |
e86ce104 AM |
5963 | /* Fall through. */ |
5964 | ||
65f38f15 AM |
5965 | case R_PPC64_ADDR16: |
5966 | case R_PPC64_ADDR16_DS: | |
5967 | case R_PPC64_ADDR16_HA: | |
5968 | case R_PPC64_ADDR16_HI: | |
f9c6b907 AM |
5969 | case R_PPC64_ADDR16_HIGH: |
5970 | case R_PPC64_ADDR16_HIGHA: | |
65f38f15 AM |
5971 | case R_PPC64_ADDR16_HIGHER: |
5972 | case R_PPC64_ADDR16_HIGHERA: | |
5973 | case R_PPC64_ADDR16_HIGHEST: | |
5974 | case R_PPC64_ADDR16_HIGHESTA: | |
5975 | case R_PPC64_ADDR16_LO: | |
5976 | case R_PPC64_ADDR16_LO_DS: | |
0e1862bb | 5977 | if (h != NULL && !bfd_link_pic (info) && abiversion (abfd) != 1 |
a345bc8d AM |
5978 | && rel->r_addend == 0) |
5979 | { | |
5980 | /* We may need a .plt entry if this reloc refers to a | |
5981 | function in a shared lib. */ | |
5982 | if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend)) | |
5983 | return FALSE; | |
5984 | h->pointer_equality_needed = 1; | |
5985 | } | |
5986 | /* Fall through. */ | |
5987 | ||
5988 | case R_PPC64_REL30: | |
5989 | case R_PPC64_REL32: | |
5990 | case R_PPC64_REL64: | |
65f38f15 | 5991 | case R_PPC64_ADDR32: |
65f38f15 AM |
5992 | case R_PPC64_UADDR16: |
5993 | case R_PPC64_UADDR32: | |
5994 | case R_PPC64_UADDR64: | |
5bd4f169 | 5995 | case R_PPC64_TOC: |
0e1862bb | 5996 | if (h != NULL && !bfd_link_pic (info)) |
81848ca0 | 5997 | /* We may need a copy reloc. */ |
f5385ebf | 5998 | h->non_got_ref = 1; |
81848ca0 | 5999 | |
41bd81ab | 6000 | /* Don't propagate .opd relocs. */ |
b9399fcf | 6001 | if (NO_OPD_RELOCS && is_opd) |
e86ce104 | 6002 | break; |
e86ce104 | 6003 | |
65f38f15 AM |
6004 | /* If we are creating a shared library, and this is a reloc |
6005 | against a global symbol, or a non PC relative reloc | |
6006 | against a local symbol, then we need to copy the reloc | |
6007 | into the shared library. However, if we are linking with | |
6008 | -Bsymbolic, we do not need to copy a reloc against a | |
6009 | global symbol which is defined in an object we are | |
6010 | including in the link (i.e., DEF_REGULAR is set). At | |
6011 | this point we have not seen all the input files, so it is | |
6012 | possible that DEF_REGULAR is not set now but will be set | |
6013 | later (it is never cleared). In case of a weak definition, | |
6014 | DEF_REGULAR may be cleared later by a strong definition in | |
6015 | a shared library. We account for that possibility below by | |
f4656909 | 6016 | storing information in the dyn_relocs field of the hash |
65f38f15 AM |
6017 | table entry. A similar situation occurs when creating |
6018 | shared libraries and symbol visibility changes render the | |
6019 | symbol local. | |
6020 | ||
6021 | If on the other hand, we are creating an executable, we | |
6022 | may need to keep relocations for symbols satisfied by a | |
6023 | dynamic library if we manage to avoid copy relocs for the | |
6024 | symbol. */ | |
411e1bfb | 6025 | dodyn: |
0e1862bb | 6026 | if ((bfd_link_pic (info) |
1d483afe | 6027 | && (must_be_dyn_reloc (info, r_type) |
65f38f15 | 6028 | || (h != NULL |
198f1157 | 6029 | && (!SYMBOLIC_BIND (info, h) |
65f38f15 | 6030 | || h->root.type == bfd_link_hash_defweak |
f5385ebf | 6031 | || !h->def_regular)))) |
f4656909 | 6032 | || (ELIMINATE_COPY_RELOCS |
0e1862bb | 6033 | && !bfd_link_pic (info) |
65f38f15 AM |
6034 | && h != NULL |
6035 | && (h->root.type == bfd_link_hash_defweak | |
25f23106 | 6036 | || !h->def_regular)) |
0e1862bb | 6037 | || (!bfd_link_pic (info) |
25f23106 | 6038 | && ifunc != NULL)) |
5bd4f169 | 6039 | { |
65f38f15 AM |
6040 | /* We must copy these reloc types into the output file. |
6041 | Create a reloc section in dynobj and make room for | |
6042 | this reloc. */ | |
5bd4f169 AM |
6043 | if (sreloc == NULL) |
6044 | { | |
83bac4b0 NC |
6045 | sreloc = _bfd_elf_make_dynamic_reloc_section |
6046 | (sec, htab->elf.dynobj, 3, abfd, /*rela?*/ TRUE); | |
65f38f15 | 6047 | |
5bd4f169 | 6048 | if (sreloc == NULL) |
83bac4b0 | 6049 | return FALSE; |
5bd4f169 AM |
6050 | } |
6051 | ||
65f38f15 AM |
6052 | /* If this is a global symbol, we count the number of |
6053 | relocations we need for this symbol. */ | |
6054 | if (h != NULL) | |
6055 | { | |
19e08130 AM |
6056 | struct elf_dyn_relocs *p; |
6057 | struct elf_dyn_relocs **head; | |
6058 | ||
ec338859 | 6059 | head = &((struct ppc_link_hash_entry *) h)->dyn_relocs; |
19e08130 AM |
6060 | p = *head; |
6061 | if (p == NULL || p->sec != sec) | |
6062 | { | |
6063 | p = bfd_alloc (htab->elf.dynobj, sizeof *p); | |
6064 | if (p == NULL) | |
6065 | return FALSE; | |
6066 | p->next = *head; | |
6067 | *head = p; | |
6068 | p->sec = sec; | |
6069 | p->count = 0; | |
6070 | p->pc_count = 0; | |
6071 | } | |
6072 | p->count += 1; | |
6073 | if (!must_be_dyn_reloc (info, r_type)) | |
6074 | p->pc_count += 1; | |
65f38f15 AM |
6075 | } |
6076 | else | |
6077 | { | |
ec338859 AM |
6078 | /* Track dynamic relocs needed for local syms too. |
6079 | We really need local syms available to do this | |
6080 | easily. Oh well. */ | |
19e08130 AM |
6081 | struct ppc_dyn_relocs *p; |
6082 | struct ppc_dyn_relocs **head; | |
6083 | bfd_boolean is_ifunc; | |
ec338859 | 6084 | asection *s; |
6edfbbad | 6085 | void *vpp; |
87d72d41 | 6086 | Elf_Internal_Sym *isym; |
6edfbbad | 6087 | |
87d72d41 AM |
6088 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, |
6089 | abfd, r_symndx); | |
6090 | if (isym == NULL) | |
b34976b6 | 6091 | return FALSE; |
ec338859 | 6092 | |
87d72d41 AM |
6093 | s = bfd_section_from_elf_index (abfd, isym->st_shndx); |
6094 | if (s == NULL) | |
6095 | s = sec; | |
6096 | ||
6edfbbad | 6097 | vpp = &elf_section_data (s)->local_dynrel; |
19e08130 AM |
6098 | head = (struct ppc_dyn_relocs **) vpp; |
6099 | is_ifunc = ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC; | |
6100 | p = *head; | |
6101 | if (p != NULL && p->sec == sec && p->ifunc != is_ifunc) | |
6102 | p = p->next; | |
6103 | if (p == NULL || p->sec != sec || p->ifunc != is_ifunc) | |
6104 | { | |
6105 | p = bfd_alloc (htab->elf.dynobj, sizeof *p); | |
6106 | if (p == NULL) | |
6107 | return FALSE; | |
6108 | p->next = *head; | |
6109 | *head = p; | |
6110 | p->sec = sec; | |
6111 | p->ifunc = is_ifunc; | |
6112 | p->count = 0; | |
6113 | } | |
6114 | p->count += 1; | |
ec338859 | 6115 | } |
65f38f15 | 6116 | } |
5bd4f169 | 6117 | break; |
65f38f15 AM |
6118 | |
6119 | default: | |
96e0dda4 | 6120 | break; |
5bd4f169 AM |
6121 | } |
6122 | } | |
6123 | ||
b34976b6 | 6124 | return TRUE; |
5bd4f169 AM |
6125 | } |
6126 | ||
ee67d69a AM |
6127 | /* Merge backend specific data from an object file to the output |
6128 | object file when linking. */ | |
6129 | ||
6130 | static bfd_boolean | |
50e03d47 | 6131 | ppc64_elf_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info) |
ee67d69a | 6132 | { |
50e03d47 | 6133 | bfd *obfd = info->output_bfd; |
ee67d69a AM |
6134 | unsigned long iflags, oflags; |
6135 | ||
6136 | if ((ibfd->flags & BFD_LINKER_CREATED) != 0) | |
6137 | return TRUE; | |
6138 | ||
6139 | if (!is_ppc64_elf (ibfd) || !is_ppc64_elf (obfd)) | |
6140 | return TRUE; | |
6141 | ||
50e03d47 | 6142 | if (!_bfd_generic_verify_endian_match (ibfd, info)) |
ee67d69a AM |
6143 | return FALSE; |
6144 | ||
6145 | iflags = elf_elfheader (ibfd)->e_flags; | |
6146 | oflags = elf_elfheader (obfd)->e_flags; | |
6147 | ||
f6c7c3e8 | 6148 | if (iflags & ~EF_PPC64_ABI) |
ee67d69a | 6149 | { |
4eca0228 | 6150 | _bfd_error_handler |
695344c0 | 6151 | /* xgettext:c-format */ |
871b3ab2 | 6152 | (_("%pB uses unknown e_flags 0x%lx"), ibfd, iflags); |
ee67d69a AM |
6153 | bfd_set_error (bfd_error_bad_value); |
6154 | return FALSE; | |
6155 | } | |
f6c7c3e8 | 6156 | else if (iflags != oflags && iflags != 0) |
ee67d69a | 6157 | { |
4eca0228 | 6158 | _bfd_error_handler |
695344c0 | 6159 | /* xgettext:c-format */ |
871b3ab2 | 6160 | (_("%pB: ABI version %ld is not compatible with ABI version %ld output"), |
ee67d69a AM |
6161 | ibfd, iflags, oflags); |
6162 | bfd_set_error (bfd_error_bad_value); | |
6163 | return FALSE; | |
6164 | } | |
6165 | ||
50e03d47 | 6166 | _bfd_elf_ppc_merge_fp_attributes (ibfd, info); |
005d79fd | 6167 | |
ee67d69a | 6168 | /* Merge Tag_compatibility attributes and any common GNU ones. */ |
50e03d47 | 6169 | _bfd_elf_merge_object_attributes (ibfd, info); |
ee67d69a AM |
6170 | |
6171 | return TRUE; | |
6172 | } | |
6173 | ||
6174 | static bfd_boolean | |
6175 | ppc64_elf_print_private_bfd_data (bfd *abfd, void *ptr) | |
6176 | { | |
6177 | /* Print normal ELF private data. */ | |
6178 | _bfd_elf_print_private_bfd_data (abfd, ptr); | |
6179 | ||
6180 | if (elf_elfheader (abfd)->e_flags != 0) | |
6181 | { | |
6182 | FILE *file = ptr; | |
6183 | ||
ee67d69a AM |
6184 | fprintf (file, _("private flags = 0x%lx:"), |
6185 | elf_elfheader (abfd)->e_flags); | |
6186 | ||
6187 | if ((elf_elfheader (abfd)->e_flags & EF_PPC64_ABI) != 0) | |
6188 | fprintf (file, _(" [abiv%ld]"), | |
6189 | elf_elfheader (abfd)->e_flags & EF_PPC64_ABI); | |
6190 | fputc ('\n', file); | |
6191 | } | |
6192 | ||
6193 | return TRUE; | |
6194 | } | |
6195 | ||
8387904d | 6196 | /* OFFSET in OPD_SEC specifies a function descriptor. Return the address |
b53dfeb2 AM |
6197 | of the code entry point, and its section, which must be in the same |
6198 | object as OPD_SEC. Returns (bfd_vma) -1 on error. */ | |
8387904d AM |
6199 | |
6200 | static bfd_vma | |
6201 | opd_entry_value (asection *opd_sec, | |
6202 | bfd_vma offset, | |
6203 | asection **code_sec, | |
aef36ac1 AM |
6204 | bfd_vma *code_off, |
6205 | bfd_boolean in_code_sec) | |
8387904d AM |
6206 | { |
6207 | bfd *opd_bfd = opd_sec->owner; | |
8860955f | 6208 | Elf_Internal_Rela *relocs; |
8387904d | 6209 | Elf_Internal_Rela *lo, *hi, *look; |
645ea6a9 | 6210 | bfd_vma val; |
8387904d | 6211 | |
9f296da3 AM |
6212 | /* No relocs implies we are linking a --just-symbols object, or looking |
6213 | at a final linked executable with addr2line or somesuch. */ | |
4b85d634 AM |
6214 | if (opd_sec->reloc_count == 0) |
6215 | { | |
729eabd5 | 6216 | bfd_byte *contents = ppc64_elf_tdata (opd_bfd)->opd.contents; |
3b36f7e6 | 6217 | |
729eabd5 AM |
6218 | if (contents == NULL) |
6219 | { | |
6220 | if (!bfd_malloc_and_get_section (opd_bfd, opd_sec, &contents)) | |
6221 | return (bfd_vma) -1; | |
6222 | ppc64_elf_tdata (opd_bfd)->opd.contents = contents; | |
6223 | } | |
ee1e4ede | 6224 | |
dbb3fbbb | 6225 | /* PR 17512: file: 64b9dfbb. */ |
451dfd38 | 6226 | if (offset + 7 >= opd_sec->size || offset + 7 < offset) |
dbb3fbbb NC |
6227 | return (bfd_vma) -1; |
6228 | ||
729eabd5 | 6229 | val = bfd_get_64 (opd_bfd, contents + offset); |
aef36ac1 AM |
6230 | if (code_sec != NULL) |
6231 | { | |
6232 | asection *sec, *likely = NULL; | |
ee1e4ede | 6233 | |
aef36ac1 | 6234 | if (in_code_sec) |
4b85d634 | 6235 | { |
aef36ac1 AM |
6236 | sec = *code_sec; |
6237 | if (sec->vma <= val | |
6238 | && val < sec->vma + sec->size) | |
6239 | likely = sec; | |
6240 | else | |
6241 | val = -1; | |
6242 | } | |
6243 | else | |
6244 | for (sec = opd_bfd->sections; sec != NULL; sec = sec->next) | |
6245 | if (sec->vma <= val | |
6246 | && (sec->flags & SEC_LOAD) != 0 | |
6247 | && (sec->flags & SEC_ALLOC) != 0) | |
6248 | likely = sec; | |
6249 | if (likely != NULL) | |
6250 | { | |
6251 | *code_sec = likely; | |
6252 | if (code_off != NULL) | |
6253 | *code_off = val - likely->vma; | |
4b85d634 AM |
6254 | } |
6255 | } | |
aef36ac1 | 6256 | return val; |
4b85d634 AM |
6257 | } |
6258 | ||
0c8d6e5c | 6259 | BFD_ASSERT (is_ppc64_elf (opd_bfd)); |
0ffa91dd | 6260 | |
729eabd5 | 6261 | relocs = ppc64_elf_tdata (opd_bfd)->opd.relocs; |
8860955f AM |
6262 | if (relocs == NULL) |
6263 | relocs = _bfd_elf_link_read_relocs (opd_bfd, opd_sec, NULL, NULL, TRUE); | |
877a8638 NC |
6264 | /* PR 17512: file: df8e1fd6. */ |
6265 | if (relocs == NULL) | |
6266 | return (bfd_vma) -1; | |
645ea6a9 | 6267 | |
8387904d | 6268 | /* Go find the opd reloc at the sym address. */ |
8860955f | 6269 | lo = relocs; |
8387904d | 6270 | hi = lo + opd_sec->reloc_count - 1; /* ignore last reloc */ |
645ea6a9 | 6271 | val = (bfd_vma) -1; |
8387904d AM |
6272 | while (lo < hi) |
6273 | { | |
6274 | look = lo + (hi - lo) / 2; | |
6275 | if (look->r_offset < offset) | |
6276 | lo = look + 1; | |
6277 | else if (look->r_offset > offset) | |
6278 | hi = look; | |
6279 | else | |
6280 | { | |
0ffa91dd NC |
6281 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (opd_bfd); |
6282 | ||
8387904d AM |
6283 | if (ELF64_R_TYPE (look->r_info) == R_PPC64_ADDR64 |
6284 | && ELF64_R_TYPE ((look + 1)->r_info) == R_PPC64_TOC) | |
6285 | { | |
6286 | unsigned long symndx = ELF64_R_SYM (look->r_info); | |
b53dfeb2 | 6287 | asection *sec = NULL; |
8387904d | 6288 | |
b53dfeb2 AM |
6289 | if (symndx >= symtab_hdr->sh_info |
6290 | && elf_sym_hashes (opd_bfd) != NULL) | |
8387904d AM |
6291 | { |
6292 | struct elf_link_hash_entry **sym_hashes; | |
6293 | struct elf_link_hash_entry *rh; | |
6294 | ||
6295 | sym_hashes = elf_sym_hashes (opd_bfd); | |
6296 | rh = sym_hashes[symndx - symtab_hdr->sh_info]; | |
128205bb AM |
6297 | if (rh != NULL) |
6298 | { | |
6299 | rh = elf_follow_link (rh); | |
bb854a36 AM |
6300 | if (rh->root.type != bfd_link_hash_defined |
6301 | && rh->root.type != bfd_link_hash_defweak) | |
6302 | break; | |
6303 | if (rh->root.u.def.section->owner == opd_bfd) | |
b53dfeb2 | 6304 | { |
bb854a36 AM |
6305 | val = rh->root.u.def.value; |
6306 | sec = rh->root.u.def.section; | |
b53dfeb2 AM |
6307 | } |
6308 | } | |
6309 | } | |
6310 | ||
6311 | if (sec == NULL) | |
6312 | { | |
6313 | Elf_Internal_Sym *sym; | |
6314 | ||
6315 | if (symndx < symtab_hdr->sh_info) | |
6316 | { | |
6317 | sym = (Elf_Internal_Sym *) symtab_hdr->contents; | |
6318 | if (sym == NULL) | |
6319 | { | |
6320 | size_t symcnt = symtab_hdr->sh_info; | |
6321 | sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr, | |
6322 | symcnt, 0, | |
6323 | NULL, NULL, NULL); | |
6324 | if (sym == NULL) | |
6325 | break; | |
6326 | symtab_hdr->contents = (bfd_byte *) sym; | |
6327 | } | |
6328 | sym += symndx; | |
128205bb AM |
6329 | } |
6330 | else | |
6331 | { | |
b53dfeb2 AM |
6332 | sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr, |
6333 | 1, symndx, | |
6334 | NULL, NULL, NULL); | |
128205bb AM |
6335 | if (sym == NULL) |
6336 | break; | |
128205bb | 6337 | } |
b53dfeb2 AM |
6338 | sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx); |
6339 | if (sec == NULL) | |
6340 | break; | |
6341 | BFD_ASSERT ((sec->flags & SEC_MERGE) == 0); | |
6342 | val = sym->st_value; | |
8387904d | 6343 | } |
b53dfeb2 | 6344 | |
8387904d AM |
6345 | val += look->r_addend; |
6346 | if (code_off != NULL) | |
6347 | *code_off = val; | |
6348 | if (code_sec != NULL) | |
aef36ac1 AM |
6349 | { |
6350 | if (in_code_sec && *code_sec != sec) | |
6351 | return -1; | |
6352 | else | |
6353 | *code_sec = sec; | |
6354 | } | |
b53dfeb2 | 6355 | if (sec->output_section != NULL) |
8387904d | 6356 | val += sec->output_section->vma + sec->output_offset; |
8387904d AM |
6357 | } |
6358 | break; | |
6359 | } | |
6360 | } | |
645ea6a9 | 6361 | |
645ea6a9 | 6362 | return val; |
8387904d AM |
6363 | } |
6364 | ||
aef36ac1 AM |
6365 | /* If the ELF symbol SYM might be a function in SEC, return the |
6366 | function size and set *CODE_OFF to the function's entry point, | |
6367 | otherwise return zero. */ | |
9f296da3 | 6368 | |
aef36ac1 AM |
6369 | static bfd_size_type |
6370 | ppc64_elf_maybe_function_sym (const asymbol *sym, asection *sec, | |
6371 | bfd_vma *code_off) | |
9f296da3 | 6372 | { |
aef36ac1 AM |
6373 | bfd_size_type size; |
6374 | ||
6375 | if ((sym->flags & (BSF_SECTION_SYM | BSF_FILE | BSF_OBJECT | |
6376 | | BSF_THREAD_LOCAL | BSF_RELC | BSF_SRELC)) != 0) | |
6377 | return 0; | |
6378 | ||
6379 | size = 0; | |
6380 | if (!(sym->flags & BSF_SYNTHETIC)) | |
6381 | size = ((elf_symbol_type *) sym)->internal_elf_sym.st_size; | |
6382 | ||
6383 | if (strcmp (sym->section->name, ".opd") == 0) | |
9f296da3 | 6384 | { |
b07bca4e AM |
6385 | struct _opd_sec_data *opd = get_opd_info (sym->section); |
6386 | bfd_vma symval = sym->value; | |
6387 | ||
6388 | if (opd != NULL | |
6389 | && opd->adjust != NULL | |
6390 | && elf_section_data (sym->section)->relocs != NULL) | |
6391 | { | |
6392 | /* opd_entry_value will use cached relocs that have been | |
6393 | adjusted, but with raw symbols. That means both local | |
6394 | and global symbols need adjusting. */ | |
6395 | long adjust = opd->adjust[OPD_NDX (symval)]; | |
6396 | if (adjust == -1) | |
6397 | return 0; | |
6398 | symval += adjust; | |
6399 | } | |
6400 | ||
6401 | if (opd_entry_value (sym->section, symval, | |
aef36ac1 AM |
6402 | &sec, code_off, TRUE) == (bfd_vma) -1) |
6403 | return 0; | |
6404 | /* An old ABI binary with dot-syms has a size of 24 on the .opd | |
6405 | symbol. This size has nothing to do with the code size of the | |
6406 | function, which is what we're supposed to return, but the | |
6407 | code size isn't available without looking up the dot-sym. | |
6408 | However, doing that would be a waste of time particularly | |
6409 | since elf_find_function will look at the dot-sym anyway. | |
6410 | Now, elf_find_function will keep the largest size of any | |
6411 | function sym found at the code address of interest, so return | |
6412 | 1 here to avoid it incorrectly caching a larger function size | |
6413 | for a small function. This does mean we return the wrong | |
6414 | size for a new-ABI function of size 24, but all that does is | |
6415 | disable caching for such functions. */ | |
6416 | if (size == 24) | |
6417 | size = 1; | |
9f296da3 | 6418 | } |
aef36ac1 AM |
6419 | else |
6420 | { | |
6421 | if (sym->section != sec) | |
6422 | return 0; | |
6423 | *code_off = sym->value; | |
6424 | } | |
6425 | if (size == 0) | |
6426 | size = 1; | |
6427 | return size; | |
9f296da3 AM |
6428 | } |
6429 | ||
f378ab09 AM |
6430 | /* Return true if symbol is a strong function defined in an ELFv2 |
6431 | object with st_other localentry bits of zero, ie. its local entry | |
6432 | point coincides with its global entry point. */ | |
6433 | ||
6434 | static bfd_boolean | |
6435 | is_elfv2_localentry0 (struct elf_link_hash_entry *h) | |
6436 | { | |
6437 | return (h != NULL | |
6438 | && h->type == STT_FUNC | |
6439 | && h->root.type == bfd_link_hash_defined | |
6440 | && (STO_PPC64_LOCAL_MASK & h->other) == 0 | |
8b5f1ed8 | 6441 | && !((struct ppc_link_hash_entry *) h)->non_zero_localentry |
f378ab09 AM |
6442 | && is_ppc64_elf (h->root.u.def.section->owner) |
6443 | && abiversion (h->root.u.def.section->owner) >= 2); | |
6444 | } | |
6445 | ||
854b41e7 AM |
6446 | /* Return true if symbol is defined in a regular object file. */ |
6447 | ||
6448 | static bfd_boolean | |
6449 | is_static_defined (struct elf_link_hash_entry *h) | |
6450 | { | |
6451 | return ((h->root.type == bfd_link_hash_defined | |
6452 | || h->root.type == bfd_link_hash_defweak) | |
6453 | && h->root.u.def.section != NULL | |
6454 | && h->root.u.def.section->output_section != NULL); | |
6455 | } | |
6456 | ||
b31867b6 AM |
6457 | /* If FDH is a function descriptor symbol, return the associated code |
6458 | entry symbol if it is defined. Return NULL otherwise. */ | |
6459 | ||
6460 | static struct ppc_link_hash_entry * | |
6461 | defined_code_entry (struct ppc_link_hash_entry *fdh) | |
6462 | { | |
6463 | if (fdh->is_func_descriptor) | |
6464 | { | |
6465 | struct ppc_link_hash_entry *fh = ppc_follow_link (fdh->oh); | |
6466 | if (fh->elf.root.type == bfd_link_hash_defined | |
6467 | || fh->elf.root.type == bfd_link_hash_defweak) | |
6468 | return fh; | |
6469 | } | |
6470 | return NULL; | |
6471 | } | |
6472 | ||
6473 | /* If FH is a function code entry symbol, return the associated | |
6474 | function descriptor symbol if it is defined. Return NULL otherwise. */ | |
6475 | ||
6476 | static struct ppc_link_hash_entry * | |
6477 | defined_func_desc (struct ppc_link_hash_entry *fh) | |
6478 | { | |
6479 | if (fh->oh != NULL | |
6480 | && fh->oh->is_func_descriptor) | |
6481 | { | |
6482 | struct ppc_link_hash_entry *fdh = ppc_follow_link (fh->oh); | |
6483 | if (fdh->elf.root.type == bfd_link_hash_defined | |
6484 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
6485 | return fdh; | |
6486 | } | |
6487 | return NULL; | |
6488 | } | |
6489 | ||
8c5b4e52 AM |
6490 | static bfd_boolean func_desc_adjust (struct elf_link_hash_entry *, void *); |
6491 | ||
6492 | /* Garbage collect sections, after first dealing with dot-symbols. */ | |
6493 | ||
6494 | static bfd_boolean | |
6495 | ppc64_elf_gc_sections (bfd *abfd, struct bfd_link_info *info) | |
6496 | { | |
6497 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
6498 | ||
6499 | if (htab != NULL && htab->need_func_desc_adj) | |
6500 | { | |
6501 | elf_link_hash_traverse (&htab->elf, func_desc_adjust, info); | |
6502 | htab->need_func_desc_adj = 0; | |
6503 | } | |
6504 | return bfd_elf_gc_sections (abfd, info); | |
6505 | } | |
6506 | ||
74f0fb50 AM |
6507 | /* Mark all our entry sym sections, both opd and code section. */ |
6508 | ||
6509 | static void | |
6510 | ppc64_elf_gc_keep (struct bfd_link_info *info) | |
6511 | { | |
6512 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
6513 | struct bfd_sym_chain *sym; | |
6514 | ||
4dfe6ac6 NC |
6515 | if (htab == NULL) |
6516 | return; | |
6517 | ||
74f0fb50 AM |
6518 | for (sym = info->gc_sym_list; sym != NULL; sym = sym->next) |
6519 | { | |
b31867b6 | 6520 | struct ppc_link_hash_entry *eh, *fh; |
74f0fb50 AM |
6521 | asection *sec; |
6522 | ||
6523 | eh = (struct ppc_link_hash_entry *) | |
b31867b6 | 6524 | elf_link_hash_lookup (&htab->elf, sym->name, FALSE, FALSE, TRUE); |
74f0fb50 AM |
6525 | if (eh == NULL) |
6526 | continue; | |
6527 | if (eh->elf.root.type != bfd_link_hash_defined | |
6528 | && eh->elf.root.type != bfd_link_hash_defweak) | |
6529 | continue; | |
6530 | ||
b31867b6 AM |
6531 | fh = defined_code_entry (eh); |
6532 | if (fh != NULL) | |
74f0fb50 | 6533 | { |
b31867b6 | 6534 | sec = fh->elf.root.u.def.section; |
74f0fb50 AM |
6535 | sec->flags |= SEC_KEEP; |
6536 | } | |
6537 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL | |
6538 | && opd_entry_value (eh->elf.root.u.def.section, | |
6539 | eh->elf.root.u.def.value, | |
aef36ac1 | 6540 | &sec, NULL, FALSE) != (bfd_vma) -1) |
74f0fb50 AM |
6541 | sec->flags |= SEC_KEEP; |
6542 | ||
6543 | sec = eh->elf.root.u.def.section; | |
6544 | sec->flags |= SEC_KEEP; | |
6545 | } | |
6546 | } | |
6547 | ||
64d03ab5 AM |
6548 | /* Mark sections containing dynamically referenced symbols. When |
6549 | building shared libraries, we must assume that any visible symbol is | |
6550 | referenced. */ | |
6551 | ||
6552 | static bfd_boolean | |
6553 | ppc64_elf_gc_mark_dynamic_ref (struct elf_link_hash_entry *h, void *inf) | |
6554 | { | |
6555 | struct bfd_link_info *info = (struct bfd_link_info *) inf; | |
6556 | struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h; | |
b31867b6 | 6557 | struct ppc_link_hash_entry *fdh; |
b407645f | 6558 | struct bfd_elf_dynamic_list *d = info->dynamic_list; |
64d03ab5 | 6559 | |
64d03ab5 | 6560 | /* Dynamic linking info is on the func descriptor sym. */ |
b31867b6 AM |
6561 | fdh = defined_func_desc (eh); |
6562 | if (fdh != NULL) | |
6563 | eh = fdh; | |
64d03ab5 AM |
6564 | |
6565 | if ((eh->elf.root.type == bfd_link_hash_defined | |
6566 | || eh->elf.root.type == bfd_link_hash_defweak) | |
87e79a65 | 6567 | && ((eh->elf.ref_dynamic && !eh->elf.forced_local) |
1c9177d9 | 6568 | || ((eh->elf.def_regular || ELF_COMMON_DEF_P (&eh->elf)) |
64d03ab5 | 6569 | && ELF_ST_VISIBILITY (eh->elf.other) != STV_INTERNAL |
4c58e0d8 | 6570 | && ELF_ST_VISIBILITY (eh->elf.other) != STV_HIDDEN |
0e1862bb | 6571 | && (!bfd_link_executable (info) |
e278ae05 | 6572 | || info->gc_keep_exported |
b407645f AM |
6573 | || info->export_dynamic |
6574 | || (eh->elf.dynamic | |
6575 | && d != NULL | |
6576 | && (*d->match) (&d->head, NULL, eh->elf.root.root.string))) | |
e278ae05 | 6577 | && (eh->elf.versioned >= versioned |
4c58e0d8 AM |
6578 | || !bfd_hide_sym_by_version (info->version_info, |
6579 | eh->elf.root.root.string))))) | |
64d03ab5 AM |
6580 | { |
6581 | asection *code_sec; | |
b31867b6 | 6582 | struct ppc_link_hash_entry *fh; |
64d03ab5 AM |
6583 | |
6584 | eh->elf.root.u.def.section->flags |= SEC_KEEP; | |
6585 | ||
6586 | /* Function descriptor syms cause the associated | |
6587 | function code sym section to be marked. */ | |
b31867b6 AM |
6588 | fh = defined_code_entry (eh); |
6589 | if (fh != NULL) | |
6590 | { | |
6591 | code_sec = fh->elf.root.u.def.section; | |
6592 | code_sec->flags |= SEC_KEEP; | |
6593 | } | |
64d03ab5 AM |
6594 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL |
6595 | && opd_entry_value (eh->elf.root.u.def.section, | |
6596 | eh->elf.root.u.def.value, | |
aef36ac1 | 6597 | &code_sec, NULL, FALSE) != (bfd_vma) -1) |
64d03ab5 AM |
6598 | code_sec->flags |= SEC_KEEP; |
6599 | } | |
6600 | ||
6601 | return TRUE; | |
6602 | } | |
6603 | ||
5bd4f169 AM |
6604 | /* Return the section that should be marked against GC for a given |
6605 | relocation. */ | |
6606 | ||
6607 | static asection * | |
4ce794b7 | 6608 | ppc64_elf_gc_mark_hook (asection *sec, |
fb34365b | 6609 | struct bfd_link_info *info, |
4ce794b7 AM |
6610 | Elf_Internal_Rela *rel, |
6611 | struct elf_link_hash_entry *h, | |
6612 | Elf_Internal_Sym *sym) | |
5bd4f169 | 6613 | { |
ccfa59ea AM |
6614 | asection *rsec; |
6615 | ||
ccfa59ea AM |
6616 | /* Syms return NULL if we're marking .opd, so we avoid marking all |
6617 | function sections, as all functions are referenced in .opd. */ | |
6618 | rsec = NULL; | |
6619 | if (get_opd_info (sec) != NULL) | |
6620 | return rsec; | |
1e2f5b6e | 6621 | |
5bd4f169 AM |
6622 | if (h != NULL) |
6623 | { | |
04c9666a | 6624 | enum elf_ppc64_reloc_type r_type; |
b31867b6 | 6625 | struct ppc_link_hash_entry *eh, *fh, *fdh; |
a33d1f77 | 6626 | |
4ce794b7 | 6627 | r_type = ELF64_R_TYPE (rel->r_info); |
a33d1f77 | 6628 | switch (r_type) |
5bd4f169 AM |
6629 | { |
6630 | case R_PPC64_GNU_VTINHERIT: | |
6631 | case R_PPC64_GNU_VTENTRY: | |
6632 | break; | |
6633 | ||
6634 | default: | |
6635 | switch (h->root.type) | |
6636 | { | |
6637 | case bfd_link_hash_defined: | |
6638 | case bfd_link_hash_defweak: | |
ccfa59ea | 6639 | eh = (struct ppc_link_hash_entry *) h; |
b31867b6 AM |
6640 | fdh = defined_func_desc (eh); |
6641 | if (fdh != NULL) | |
8c5b4e52 AM |
6642 | { |
6643 | /* -mcall-aixdesc code references the dot-symbol on | |
6644 | a call reloc. Mark the function descriptor too | |
6645 | against garbage collection. */ | |
6646 | fdh->elf.mark = 1; | |
60d67dc8 AM |
6647 | if (fdh->elf.is_weakalias) |
6648 | weakdef (&fdh->elf)->mark = 1; | |
8c5b4e52 AM |
6649 | eh = fdh; |
6650 | } | |
1e2f5b6e AM |
6651 | |
6652 | /* Function descriptor syms cause the associated | |
6653 | function code sym section to be marked. */ | |
b31867b6 AM |
6654 | fh = defined_code_entry (eh); |
6655 | if (fh != NULL) | |
ccfa59ea AM |
6656 | { |
6657 | /* They also mark their opd section. */ | |
74f0fb50 | 6658 | eh->elf.root.u.def.section->gc_mark = 1; |
ccfa59ea | 6659 | |
b31867b6 | 6660 | rsec = fh->elf.root.u.def.section; |
ccfa59ea | 6661 | } |
8387904d AM |
6662 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL |
6663 | && opd_entry_value (eh->elf.root.u.def.section, | |
6664 | eh->elf.root.u.def.value, | |
aef36ac1 | 6665 | &rsec, NULL, FALSE) != (bfd_vma) -1) |
74f0fb50 | 6666 | eh->elf.root.u.def.section->gc_mark = 1; |
ccfa59ea | 6667 | else |
1e2f5b6e AM |
6668 | rsec = h->root.u.def.section; |
6669 | break; | |
5bd4f169 AM |
6670 | |
6671 | case bfd_link_hash_common: | |
1e2f5b6e AM |
6672 | rsec = h->root.u.c.p->section; |
6673 | break; | |
5bd4f169 AM |
6674 | |
6675 | default: | |
fb34365b | 6676 | return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); |
5bd4f169 AM |
6677 | } |
6678 | } | |
6679 | } | |
6680 | else | |
6681 | { | |
74f0fb50 | 6682 | struct _opd_sec_data *opd; |
1e2f5b6e AM |
6683 | |
6684 | rsec = bfd_section_from_elf_index (sec->owner, sym->st_shndx); | |
74f0fb50 AM |
6685 | opd = get_opd_info (rsec); |
6686 | if (opd != NULL && opd->func_sec != NULL) | |
ccfa59ea | 6687 | { |
74f0fb50 | 6688 | rsec->gc_mark = 1; |
ccfa59ea | 6689 | |
51aecdc5 | 6690 | rsec = opd->func_sec[OPD_NDX (sym->st_value + rel->r_addend)]; |
ccfa59ea | 6691 | } |
5bd4f169 AM |
6692 | } |
6693 | ||
1e2f5b6e | 6694 | return rsec; |
5bd4f169 AM |
6695 | } |
6696 | ||
deb0e272 AM |
6697 | /* The maximum size of .sfpr. */ |
6698 | #define SFPR_MAX (218*4) | |
6699 | ||
6700 | struct sfpr_def_parms | |
6701 | { | |
699733f6 AM |
6702 | const char name[12]; |
6703 | unsigned char lo, hi; | |
deb0e272 AM |
6704 | bfd_byte * (*write_ent) (bfd *, bfd_byte *, int); |
6705 | bfd_byte * (*write_tail) (bfd *, bfd_byte *, int); | |
6706 | }; | |
6707 | ||
a4b6fadd AM |
6708 | /* Auto-generate _save*, _rest* functions in .sfpr. |
6709 | If STUB_SEC is non-null, define alias symbols in STUB_SEC | |
6710 | instead. */ | |
deb0e272 | 6711 | |
4dfe6ac6 | 6712 | static bfd_boolean |
a4b6fadd AM |
6713 | sfpr_define (struct bfd_link_info *info, |
6714 | const struct sfpr_def_parms *parm, | |
6715 | asection *stub_sec) | |
deb0e272 AM |
6716 | { |
6717 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
6718 | unsigned int i; | |
6719 | size_t len = strlen (parm->name); | |
6720 | bfd_boolean writing = FALSE; | |
699733f6 | 6721 | char sym[16]; |
deb0e272 | 6722 | |
4dfe6ac6 NC |
6723 | if (htab == NULL) |
6724 | return FALSE; | |
6725 | ||
deb0e272 AM |
6726 | memcpy (sym, parm->name, len); |
6727 | sym[len + 2] = 0; | |
6728 | ||
6729 | for (i = parm->lo; i <= parm->hi; i++) | |
6730 | { | |
a4b6fadd | 6731 | struct ppc_link_hash_entry *h; |
deb0e272 AM |
6732 | |
6733 | sym[len + 0] = i / 10 + '0'; | |
6734 | sym[len + 1] = i % 10 + '0'; | |
a4b6fadd | 6735 | h = (struct ppc_link_hash_entry *) |
b32547cd | 6736 | elf_link_hash_lookup (&htab->elf, sym, writing, TRUE, TRUE); |
a4b6fadd | 6737 | if (stub_sec != NULL) |
deb0e272 | 6738 | { |
a4b6fadd AM |
6739 | if (h != NULL |
6740 | && h->elf.root.type == bfd_link_hash_defined | |
6741 | && h->elf.root.u.def.section == htab->sfpr) | |
6742 | { | |
6743 | struct elf_link_hash_entry *s; | |
6744 | char buf[32]; | |
6745 | sprintf (buf, "%08x.%s", stub_sec->id & 0xffffffff, sym); | |
6746 | s = elf_link_hash_lookup (&htab->elf, buf, TRUE, TRUE, FALSE); | |
6747 | if (s == NULL) | |
6748 | return FALSE; | |
6749 | if (s->root.type == bfd_link_hash_new | |
6750 | || (s->root.type = bfd_link_hash_defined | |
6751 | && s->root.u.def.section == stub_sec)) | |
6752 | { | |
6753 | s->root.type = bfd_link_hash_defined; | |
6754 | s->root.u.def.section = stub_sec; | |
7dda8d3c | 6755 | s->root.u.def.value = (stub_sec->size - htab->sfpr->size |
a4b6fadd AM |
6756 | + h->elf.root.u.def.value); |
6757 | s->ref_regular = 1; | |
6758 | s->def_regular = 1; | |
6759 | s->ref_regular_nonweak = 1; | |
6760 | s->forced_local = 1; | |
6761 | s->non_elf = 0; | |
6762 | s->root.linker_def = 1; | |
6763 | } | |
6764 | } | |
6765 | continue; | |
6766 | } | |
6767 | if (h != NULL) | |
6768 | { | |
6769 | h->save_res = 1; | |
6770 | if (!h->elf.def_regular) | |
deb0e272 | 6771 | { |
a4b6fadd AM |
6772 | h->elf.root.type = bfd_link_hash_defined; |
6773 | h->elf.root.u.def.section = htab->sfpr; | |
6774 | h->elf.root.u.def.value = htab->sfpr->size; | |
6775 | h->elf.type = STT_FUNC; | |
6776 | h->elf.def_regular = 1; | |
b32547cd | 6777 | h->elf.non_elf = 0; |
a4b6fadd AM |
6778 | _bfd_elf_link_hash_hide_symbol (info, &h->elf, TRUE); |
6779 | writing = TRUE; | |
deb0e272 | 6780 | if (htab->sfpr->contents == NULL) |
a4b6fadd AM |
6781 | { |
6782 | htab->sfpr->contents = bfd_alloc (htab->elf.dynobj, SFPR_MAX); | |
6783 | if (htab->sfpr->contents == NULL) | |
6784 | return FALSE; | |
6785 | } | |
deb0e272 AM |
6786 | } |
6787 | } | |
6788 | if (writing) | |
6789 | { | |
6790 | bfd_byte *p = htab->sfpr->contents + htab->sfpr->size; | |
6791 | if (i != parm->hi) | |
6792 | p = (*parm->write_ent) (htab->elf.dynobj, p, i); | |
6793 | else | |
6794 | p = (*parm->write_tail) (htab->elf.dynobj, p, i); | |
6795 | htab->sfpr->size = p - htab->sfpr->contents; | |
6796 | } | |
6797 | } | |
6798 | ||
6799 | return TRUE; | |
6800 | } | |
6801 | ||
6802 | static bfd_byte * | |
6803 | savegpr0 (bfd *abfd, bfd_byte *p, int r) | |
6804 | { | |
6805 | bfd_put_32 (abfd, STD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
6806 | return p + 4; | |
6807 | } | |
6808 | ||
6809 | static bfd_byte * | |
6810 | savegpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
6811 | { | |
6812 | p = savegpr0 (abfd, p, r); | |
a078d95a | 6813 | bfd_put_32 (abfd, STD_R0_0R1 + STK_LR, p); |
deb0e272 AM |
6814 | p = p + 4; |
6815 | bfd_put_32 (abfd, BLR, p); | |
6816 | return p + 4; | |
6817 | } | |
6818 | ||
6819 | static bfd_byte * | |
6820 | restgpr0 (bfd *abfd, bfd_byte *p, int r) | |
6821 | { | |
6822 | bfd_put_32 (abfd, LD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
6823 | return p + 4; | |
6824 | } | |
6825 | ||
6826 | static bfd_byte * | |
6827 | restgpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
6828 | { | |
a078d95a | 6829 | bfd_put_32 (abfd, LD_R0_0R1 + STK_LR, p); |
deb0e272 AM |
6830 | p = p + 4; |
6831 | p = restgpr0 (abfd, p, r); | |
6832 | bfd_put_32 (abfd, MTLR_R0, p); | |
6833 | p = p + 4; | |
6834 | if (r == 29) | |
6835 | { | |
6836 | p = restgpr0 (abfd, p, 30); | |
6837 | p = restgpr0 (abfd, p, 31); | |
6838 | } | |
6839 | bfd_put_32 (abfd, BLR, p); | |
6840 | return p + 4; | |
6841 | } | |
6842 | ||
6843 | static bfd_byte * | |
6844 | savegpr1 (bfd *abfd, bfd_byte *p, int r) | |
6845 | { | |
6846 | bfd_put_32 (abfd, STD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
6847 | return p + 4; | |
6848 | } | |
6849 | ||
6850 | static bfd_byte * | |
6851 | savegpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
6852 | { | |
6853 | p = savegpr1 (abfd, p, r); | |
6854 | bfd_put_32 (abfd, BLR, p); | |
6855 | return p + 4; | |
6856 | } | |
6857 | ||
6858 | static bfd_byte * | |
6859 | restgpr1 (bfd *abfd, bfd_byte *p, int r) | |
6860 | { | |
6861 | bfd_put_32 (abfd, LD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
6862 | return p + 4; | |
6863 | } | |
6864 | ||
6865 | static bfd_byte * | |
6866 | restgpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
6867 | { | |
6868 | p = restgpr1 (abfd, p, r); | |
6869 | bfd_put_32 (abfd, BLR, p); | |
6870 | return p + 4; | |
6871 | } | |
6872 | ||
6873 | static bfd_byte * | |
6874 | savefpr (bfd *abfd, bfd_byte *p, int r) | |
6875 | { | |
6876 | bfd_put_32 (abfd, STFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
6877 | return p + 4; | |
6878 | } | |
6879 | ||
6880 | static bfd_byte * | |
6881 | savefpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
6882 | { | |
6883 | p = savefpr (abfd, p, r); | |
a078d95a | 6884 | bfd_put_32 (abfd, STD_R0_0R1 + STK_LR, p); |
deb0e272 AM |
6885 | p = p + 4; |
6886 | bfd_put_32 (abfd, BLR, p); | |
6887 | return p + 4; | |
6888 | } | |
6889 | ||
6890 | static bfd_byte * | |
6891 | restfpr (bfd *abfd, bfd_byte *p, int r) | |
6892 | { | |
6893 | bfd_put_32 (abfd, LFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
6894 | return p + 4; | |
6895 | } | |
6896 | ||
6897 | static bfd_byte * | |
6898 | restfpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
6899 | { | |
a078d95a | 6900 | bfd_put_32 (abfd, LD_R0_0R1 + STK_LR, p); |
deb0e272 AM |
6901 | p = p + 4; |
6902 | p = restfpr (abfd, p, r); | |
6903 | bfd_put_32 (abfd, MTLR_R0, p); | |
6904 | p = p + 4; | |
6905 | if (r == 29) | |
6906 | { | |
6907 | p = restfpr (abfd, p, 30); | |
6908 | p = restfpr (abfd, p, 31); | |
6909 | } | |
6910 | bfd_put_32 (abfd, BLR, p); | |
6911 | return p + 4; | |
6912 | } | |
6913 | ||
6914 | static bfd_byte * | |
6915 | savefpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
6916 | { | |
6917 | p = savefpr (abfd, p, r); | |
6918 | bfd_put_32 (abfd, BLR, p); | |
6919 | return p + 4; | |
6920 | } | |
6921 | ||
6922 | static bfd_byte * | |
6923 | restfpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
6924 | { | |
6925 | p = restfpr (abfd, p, r); | |
6926 | bfd_put_32 (abfd, BLR, p); | |
6927 | return p + 4; | |
6928 | } | |
6929 | ||
6930 | static bfd_byte * | |
6931 | savevr (bfd *abfd, bfd_byte *p, int r) | |
6932 | { | |
6933 | bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p); | |
6934 | p = p + 4; | |
6935 | bfd_put_32 (abfd, STVX_VR0_R12_R0 + (r << 21), p); | |
6936 | return p + 4; | |
6937 | } | |
6938 | ||
6939 | static bfd_byte * | |
6940 | savevr_tail (bfd *abfd, bfd_byte *p, int r) | |
6941 | { | |
6942 | p = savevr (abfd, p, r); | |
6943 | bfd_put_32 (abfd, BLR, p); | |
6944 | return p + 4; | |
6945 | } | |
6946 | ||
6947 | static bfd_byte * | |
6948 | restvr (bfd *abfd, bfd_byte *p, int r) | |
6949 | { | |
6950 | bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p); | |
6951 | p = p + 4; | |
6952 | bfd_put_32 (abfd, LVX_VR0_R12_R0 + (r << 21), p); | |
6953 | return p + 4; | |
6954 | } | |
6955 | ||
6956 | static bfd_byte * | |
6957 | restvr_tail (bfd *abfd, bfd_byte *p, int r) | |
6958 | { | |
6959 | p = restvr (abfd, p, r); | |
6960 | bfd_put_32 (abfd, BLR, p); | |
6961 | return p + 4; | |
6962 | } | |
6963 | ||
e86ce104 AM |
6964 | /* Called via elf_link_hash_traverse to transfer dynamic linking |
6965 | information on function code symbol entries to their corresponding | |
6966 | function descriptor symbol entries. */ | |
deb0e272 | 6967 | |
b34976b6 | 6968 | static bfd_boolean |
4ce794b7 | 6969 | func_desc_adjust (struct elf_link_hash_entry *h, void *inf) |
5bd4f169 | 6970 | { |
e86ce104 | 6971 | struct bfd_link_info *info; |
65f38f15 | 6972 | struct ppc_link_hash_table *htab; |
50bc7936 AM |
6973 | struct ppc_link_hash_entry *fh; |
6974 | struct ppc_link_hash_entry *fdh; | |
6975 | bfd_boolean force_local; | |
5bd4f169 | 6976 | |
50bc7936 AM |
6977 | fh = (struct ppc_link_hash_entry *) h; |
6978 | if (fh->elf.root.type == bfd_link_hash_indirect) | |
b34976b6 | 6979 | return TRUE; |
e86ce104 | 6980 | |
8c5b4e52 AM |
6981 | if (!fh->is_func) |
6982 | return TRUE; | |
6983 | ||
6984 | if (fh->elf.root.root.string[0] != '.' | |
6985 | || fh->elf.root.root.string[1] == '\0') | |
6986 | return TRUE; | |
6987 | ||
4ce794b7 | 6988 | info = inf; |
65f38f15 | 6989 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
6990 | if (htab == NULL) |
6991 | return FALSE; | |
5bd4f169 | 6992 | |
8c5b4e52 AM |
6993 | /* Find the corresponding function descriptor symbol. */ |
6994 | fdh = lookup_fdh (fh, htab); | |
6995 | ||
c09bdfe5 AM |
6996 | /* Resolve undefined references to dot-symbols as the value |
6997 | in the function descriptor, if we have one in a regular object. | |
6998 | This is to satisfy cases like ".quad .foo". Calls to functions | |
6999 | in dynamic objects are handled elsewhere. */ | |
8c5b4e52 AM |
7000 | if ((fh->elf.root.type == bfd_link_hash_undefined |
7001 | || fh->elf.root.type == bfd_link_hash_undefweak) | |
7002 | && (fdh->elf.root.type == bfd_link_hash_defined | |
7003 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
b31867b6 AM |
7004 | && get_opd_info (fdh->elf.root.u.def.section) != NULL |
7005 | && opd_entry_value (fdh->elf.root.u.def.section, | |
7006 | fdh->elf.root.u.def.value, | |
c09bdfe5 | 7007 | &fh->elf.root.u.def.section, |
aef36ac1 | 7008 | &fh->elf.root.u.def.value, FALSE) != (bfd_vma) -1) |
c09bdfe5 | 7009 | { |
b31867b6 | 7010 | fh->elf.root.type = fdh->elf.root.type; |
f5385ebf | 7011 | fh->elf.forced_local = 1; |
b31867b6 AM |
7012 | fh->elf.def_regular = fdh->elf.def_regular; |
7013 | fh->elf.def_dynamic = fdh->elf.def_dynamic; | |
c09bdfe5 AM |
7014 | } |
7015 | ||
8c5b4e52 AM |
7016 | if (!fh->elf.dynamic) |
7017 | { | |
7018 | struct plt_entry *ent; | |
5bd4f169 | 7019 | |
8c5b4e52 AM |
7020 | for (ent = fh->elf.plt.plist; ent != NULL; ent = ent->next) |
7021 | if (ent->plt.refcount > 0) | |
7022 | break; | |
7023 | if (ent == NULL) | |
7024 | return TRUE; | |
7025 | } | |
5bd4f169 | 7026 | |
8c5b4e52 | 7027 | /* Create a descriptor as undefined if necessary. */ |
50bc7936 | 7028 | if (fdh == NULL |
0e1862bb | 7029 | && !bfd_link_executable (info) |
50bc7936 AM |
7030 | && (fh->elf.root.type == bfd_link_hash_undefined |
7031 | || fh->elf.root.type == bfd_link_hash_undefweak)) | |
7032 | { | |
908b32fc | 7033 | fdh = make_fdh (info, fh); |
bb700d78 AM |
7034 | if (fdh == NULL) |
7035 | return FALSE; | |
50bc7936 | 7036 | } |
648cca2c | 7037 | |
8c5b4e52 | 7038 | /* We can't support overriding of symbols on a fake descriptor. */ |
908b32fc AM |
7039 | if (fdh != NULL |
7040 | && fdh->fake | |
8c5b4e52 AM |
7041 | && (fh->elf.root.type == bfd_link_hash_defined |
7042 | || fh->elf.root.type == bfd_link_hash_defweak)) | |
7043 | _bfd_elf_link_hash_hide_symbol (info, &fdh->elf, TRUE); | |
908b32fc | 7044 | |
8c5b4e52 AM |
7045 | /* Transfer dynamic linking information to the function descriptor. */ |
7046 | if (fdh != NULL) | |
7047 | { | |
f5385ebf AM |
7048 | fdh->elf.ref_regular |= fh->elf.ref_regular; |
7049 | fdh->elf.ref_dynamic |= fh->elf.ref_dynamic; | |
7050 | fdh->elf.ref_regular_nonweak |= fh->elf.ref_regular_nonweak; | |
7051 | fdh->elf.non_got_ref |= fh->elf.non_got_ref; | |
8c5b4e52 AM |
7052 | fdh->elf.dynamic |= fh->elf.dynamic; |
7053 | fdh->elf.needs_plt |= (fh->elf.needs_plt | |
7054 | || fh->elf.type == STT_FUNC | |
7055 | || fh->elf.type == STT_GNU_IFUNC); | |
7056 | move_plt_plist (fh, fdh); | |
7057 | ||
7058 | if (!fdh->elf.forced_local | |
7059 | && fh->elf.dynindx != -1) | |
7060 | if (!bfd_elf_link_record_dynamic_symbol (info, &fdh->elf)) | |
7061 | return FALSE; | |
e86ce104 AM |
7062 | } |
7063 | ||
50bc7936 AM |
7064 | /* Now that the info is on the function descriptor, clear the |
7065 | function code sym info. Any function code syms for which we | |
7066 | don't have a definition in a regular file, we force local. | |
7067 | This prevents a shared library from exporting syms that have | |
7068 | been imported from another library. Function code syms that | |
7069 | are really in the library we must leave global to prevent the | |
7070 | linker dragging in a definition from a static library. */ | |
93f3fa99 AM |
7071 | force_local = (!fh->elf.def_regular |
7072 | || fdh == NULL | |
7073 | || !fdh->elf.def_regular | |
7074 | || fdh->elf.forced_local); | |
50bc7936 AM |
7075 | _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local); |
7076 | ||
b34976b6 | 7077 | return TRUE; |
e86ce104 | 7078 | } |
40b8271b | 7079 | |
a4b6fadd AM |
7080 | static const struct sfpr_def_parms save_res_funcs[] = |
7081 | { | |
7082 | { "_savegpr0_", 14, 31, savegpr0, savegpr0_tail }, | |
7083 | { "_restgpr0_", 14, 29, restgpr0, restgpr0_tail }, | |
7084 | { "_restgpr0_", 30, 31, restgpr0, restgpr0_tail }, | |
7085 | { "_savegpr1_", 14, 31, savegpr1, savegpr1_tail }, | |
7086 | { "_restgpr1_", 14, 31, restgpr1, restgpr1_tail }, | |
7087 | { "_savefpr_", 14, 31, savefpr, savefpr0_tail }, | |
7088 | { "_restfpr_", 14, 29, restfpr, restfpr0_tail }, | |
7089 | { "_restfpr_", 30, 31, restfpr, restfpr0_tail }, | |
7090 | { "._savef", 14, 31, savefpr, savefpr1_tail }, | |
7091 | { "._restf", 14, 31, restfpr, restfpr1_tail }, | |
7092 | { "_savevr_", 20, 31, savevr, savevr_tail }, | |
7093 | { "_restvr_", 20, 31, restvr, restvr_tail } | |
7094 | }; | |
7095 | ||
e86ce104 | 7096 | /* Called near the start of bfd_elf_size_dynamic_sections. We use |
82bd7b59 AM |
7097 | this hook to a) provide some gcc support functions, and b) transfer |
7098 | dynamic linking information gathered so far on function code symbol | |
7099 | entries, to their corresponding function descriptor symbol entries. */ | |
deb0e272 | 7100 | |
b34976b6 | 7101 | static bfd_boolean |
4ce794b7 AM |
7102 | ppc64_elf_func_desc_adjust (bfd *obfd ATTRIBUTE_UNUSED, |
7103 | struct bfd_link_info *info) | |
e86ce104 AM |
7104 | { |
7105 | struct ppc_link_hash_table *htab; | |
7106 | ||
7107 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
7108 | if (htab == NULL) |
7109 | return FALSE; | |
7110 | ||
b32547cd AM |
7111 | /* Provide any missing _save* and _rest* functions. */ |
7112 | if (htab->sfpr != NULL) | |
7113 | { | |
7114 | unsigned int i; | |
7115 | ||
7116 | htab->sfpr->size = 0; | |
7117 | for (i = 0; i < ARRAY_SIZE (save_res_funcs); i++) | |
7118 | if (!sfpr_define (info, &save_res_funcs[i], NULL)) | |
7119 | return FALSE; | |
7120 | if (htab->sfpr->size == 0) | |
7121 | htab->sfpr->flags |= SEC_EXCLUDE; | |
7122 | } | |
7123 | ||
7124 | if (bfd_link_relocatable (info)) | |
7125 | return TRUE; | |
7126 | ||
7127 | if (htab->elf.hgot != NULL) | |
dba6fa9b AM |
7128 | { |
7129 | _bfd_elf_link_hash_hide_symbol (info, htab->elf.hgot, TRUE); | |
7130 | /* Make .TOC. defined so as to prevent it being made dynamic. | |
7131 | The wrong value here is fixed later in ppc64_elf_set_toc. */ | |
43417696 AM |
7132 | if (!htab->elf.hgot->def_regular |
7133 | || htab->elf.hgot->root.type != bfd_link_hash_defined) | |
7134 | { | |
7135 | htab->elf.hgot->root.type = bfd_link_hash_defined; | |
7136 | htab->elf.hgot->root.u.def.value = 0; | |
7137 | htab->elf.hgot->root.u.def.section = bfd_abs_section_ptr; | |
7138 | htab->elf.hgot->def_regular = 1; | |
7139 | htab->elf.hgot->root.linker_def = 1; | |
7140 | } | |
dba6fa9b | 7141 | htab->elf.hgot->type = STT_OBJECT; |
dba6fa9b AM |
7142 | htab->elf.hgot->other = ((htab->elf.hgot->other & ~ELF_ST_VISIBILITY (-1)) |
7143 | | STV_HIDDEN); | |
7144 | } | |
c66bb0ee | 7145 | |
8c5b4e52 AM |
7146 | if (htab->need_func_desc_adj) |
7147 | { | |
7148 | elf_link_hash_traverse (&htab->elf, func_desc_adjust, info); | |
7149 | htab->need_func_desc_adj = 0; | |
7150 | } | |
805fc799 | 7151 | |
b34976b6 | 7152 | return TRUE; |
e86ce104 AM |
7153 | } |
7154 | ||
98bbb1b8 | 7155 | /* Find dynamic relocs for H that apply to read-only sections. */ |
a345bc8d | 7156 | |
98bbb1b8 | 7157 | static asection * |
a345bc8d AM |
7158 | readonly_dynrelocs (struct elf_link_hash_entry *h) |
7159 | { | |
7160 | struct ppc_link_hash_entry *eh; | |
7161 | struct elf_dyn_relocs *p; | |
7162 | ||
7163 | eh = (struct ppc_link_hash_entry *) h; | |
7164 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
7165 | { | |
7166 | asection *s = p->sec->output_section; | |
7167 | ||
7168 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
98bbb1b8 | 7169 | return p->sec; |
a345bc8d | 7170 | } |
98bbb1b8 | 7171 | return NULL; |
a345bc8d AM |
7172 | } |
7173 | ||
d311bc8b | 7174 | /* Return true if we have dynamic relocs against H or any of its weak |
ab2477e1 AM |
7175 | aliases, that apply to read-only sections. Cannot be used after |
7176 | size_dynamic_sections. */ | |
d311bc8b AM |
7177 | |
7178 | static bfd_boolean | |
7179 | alias_readonly_dynrelocs (struct elf_link_hash_entry *h) | |
7180 | { | |
7181 | struct ppc_link_hash_entry *eh; | |
7182 | ||
7183 | eh = (struct ppc_link_hash_entry *) h; | |
7184 | do | |
7185 | { | |
7186 | if (readonly_dynrelocs (&eh->elf)) | |
7187 | return TRUE; | |
ab2477e1 | 7188 | eh = (struct ppc_link_hash_entry *) eh->elf.u.alias; |
d311bc8b AM |
7189 | } while (eh != NULL && &eh->elf != h); |
7190 | ||
7191 | return FALSE; | |
7192 | } | |
8a2058b5 | 7193 | |
8a9e8e72 AM |
7194 | /* Return whether EH has pc-relative dynamic relocs. */ |
7195 | ||
7196 | static bfd_boolean | |
7197 | pc_dynrelocs (struct ppc_link_hash_entry *eh) | |
7198 | { | |
7199 | struct elf_dyn_relocs *p; | |
7200 | ||
7201 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
7202 | if (p->pc_count != 0) | |
7203 | return TRUE; | |
7204 | return FALSE; | |
7205 | } | |
7206 | ||
8a2058b5 AM |
7207 | /* Return true if a global entry stub will be created for H. Valid |
7208 | for ELFv2 before plt entries have been allocated. */ | |
7209 | ||
7210 | static bfd_boolean | |
7211 | global_entry_stub (struct elf_link_hash_entry *h) | |
7212 | { | |
7213 | struct plt_entry *pent; | |
7214 | ||
7215 | if (!h->pointer_equality_needed | |
7216 | || h->def_regular) | |
7217 | return FALSE; | |
7218 | ||
7219 | for (pent = h->plt.plist; pent != NULL; pent = pent->next) | |
7220 | if (pent->plt.refcount > 0 | |
7221 | && pent->addend == 0) | |
7222 | return TRUE; | |
7223 | ||
7224 | return FALSE; | |
7225 | } | |
7226 | ||
e86ce104 AM |
7227 | /* Adjust a symbol defined by a dynamic object and referenced by a |
7228 | regular object. The current definition is in some section of the | |
7229 | dynamic object, but we're not including those sections. We have to | |
7230 | change the definition to something the rest of the link can | |
7231 | understand. */ | |
7232 | ||
b34976b6 | 7233 | static bfd_boolean |
4ce794b7 AM |
7234 | ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info *info, |
7235 | struct elf_link_hash_entry *h) | |
e86ce104 AM |
7236 | { |
7237 | struct ppc_link_hash_table *htab; | |
5474d94f | 7238 | asection *s, *srel; |
e86ce104 AM |
7239 | |
7240 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
7241 | if (htab == NULL) |
7242 | return FALSE; | |
e86ce104 AM |
7243 | |
7244 | /* Deal with function syms. */ | |
7245 | if (h->type == STT_FUNC | |
e054468f | 7246 | || h->type == STT_GNU_IFUNC |
f5385ebf | 7247 | || h->needs_plt) |
e86ce104 | 7248 | { |
529fe20e AM |
7249 | bfd_boolean local = (((struct ppc_link_hash_entry *) h)->save_res |
7250 | || SYMBOL_CALLS_LOCAL (info, h) | |
7251 | || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)); | |
7252 | /* Discard dyn_relocs when non-pic if we've decided that a | |
7253 | function symbol is local and not an ifunc. We keep dynamic | |
7254 | relocs for ifuncs when local rather than always emitting a | |
7255 | plt call stub for them and defining the symbol on the call | |
7256 | stub. We can't do that for ELFv1 anyway (a function symbol | |
7257 | is defined on a descriptor, not code) and it can be faster at | |
7258 | run-time due to not needing to bounce through a stub. The | |
7259 | dyn_relocs for ifuncs will be applied even in a static | |
7260 | executable. */ | |
7261 | if (!bfd_link_pic (info) | |
7262 | && h->type != STT_GNU_IFUNC | |
7263 | && local) | |
7264 | ((struct ppc_link_hash_entry *) h)->dyn_relocs = NULL; | |
7265 | ||
e86ce104 AM |
7266 | /* Clear procedure linkage table information for any symbol that |
7267 | won't need a .plt entry. */ | |
411e1bfb AM |
7268 | struct plt_entry *ent; |
7269 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) | |
7270 | if (ent->plt.refcount > 0) | |
7271 | break; | |
8387904d | 7272 | if (ent == NULL |
2d7ad24e AM |
7273 | || (h->type != STT_GNU_IFUNC |
7274 | && local | |
3e04d765 AM |
7275 | && (htab->can_convert_all_inline_plt |
7276 | || (((struct ppc_link_hash_entry *) h)->tls_mask | |
7277 | & (TLS_TLS | PLT_KEEP)) != PLT_KEEP))) | |
40b8271b | 7278 | { |
411e1bfb | 7279 | h->plt.plist = NULL; |
f5385ebf | 7280 | h->needs_plt = 0; |
d1eca1e4 | 7281 | h->pointer_equality_needed = 0; |
40b8271b | 7282 | } |
8a2058b5 | 7283 | else if (abiversion (info->output_bfd) >= 2) |
a345bc8d | 7284 | { |
d1eca1e4 AM |
7285 | /* Taking a function's address in a read/write section |
7286 | doesn't require us to define the function symbol in the | |
7287 | executable on a global entry stub. A dynamic reloc can | |
8a2058b5 AM |
7288 | be used instead. The reason we prefer a few more dynamic |
7289 | relocs is that calling via a global entry stub costs a | |
7290 | few more instructions, and pointer_equality_needed causes | |
7291 | extra work in ld.so when resolving these symbols. */ | |
529fe20e | 7292 | if (global_entry_stub (h)) |
d1eca1e4 | 7293 | { |
ab2477e1 | 7294 | if (!readonly_dynrelocs (h)) |
529fe20e AM |
7295 | { |
7296 | h->pointer_equality_needed = 0; | |
7297 | /* If we haven't seen a branch reloc then we don't need | |
7298 | a plt entry. */ | |
7299 | if (!h->needs_plt) | |
7300 | h->plt.plist = NULL; | |
7301 | } | |
7302 | else if (!bfd_link_pic (info)) | |
7303 | /* We are going to be defining the function symbol on the | |
7304 | plt stub, so no dyn_relocs needed when non-pic. */ | |
7305 | ((struct ppc_link_hash_entry *) h)->dyn_relocs = NULL; | |
d1eca1e4 AM |
7306 | } |
7307 | ||
3988aed5 AM |
7308 | /* ELFv2 function symbols can't have copy relocs. */ |
7309 | return TRUE; | |
7310 | } | |
7311 | else if (!h->needs_plt | |
ab2477e1 | 7312 | && !readonly_dynrelocs (h)) |
3988aed5 AM |
7313 | { |
7314 | /* If we haven't seen a branch reloc then we don't need a | |
7315 | plt entry. */ | |
7316 | h->plt.plist = NULL; | |
7317 | h->pointer_equality_needed = 0; | |
a345bc8d AM |
7318 | return TRUE; |
7319 | } | |
5bd4f169 | 7320 | } |
bbd7ec4a | 7321 | else |
411e1bfb | 7322 | h->plt.plist = NULL; |
5bd4f169 AM |
7323 | |
7324 | /* If this is a weak symbol, and there is a real definition, the | |
7325 | processor independent code will have arranged for us to see the | |
7326 | real definition first, and we can just use the same value. */ | |
60d67dc8 | 7327 | if (h->is_weakalias) |
5bd4f169 | 7328 | { |
60d67dc8 AM |
7329 | struct elf_link_hash_entry *def = weakdef (h); |
7330 | BFD_ASSERT (def->root.type == bfd_link_hash_defined); | |
7331 | h->root.u.def.section = def->root.u.def.section; | |
7332 | h->root.u.def.value = def->root.u.def.value; | |
4a7e5234 AM |
7333 | if (def->root.u.def.section == htab->elf.sdynbss |
7334 | || def->root.u.def.section == htab->elf.sdynrelro) | |
7335 | ((struct ppc_link_hash_entry *) h)->dyn_relocs = NULL; | |
b34976b6 | 7336 | return TRUE; |
5bd4f169 AM |
7337 | } |
7338 | ||
5bd4f169 AM |
7339 | /* If we are creating a shared library, we must presume that the |
7340 | only references to the symbol are via the global offset table. | |
7341 | For such cases we need not do anything here; the relocations will | |
7342 | be handled correctly by relocate_section. */ | |
0e1862bb | 7343 | if (bfd_link_pic (info)) |
b34976b6 | 7344 | return TRUE; |
5bd4f169 | 7345 | |
65f38f15 AM |
7346 | /* If there are no references to this symbol that do not use the |
7347 | GOT, we don't need to generate a copy reloc. */ | |
f5385ebf | 7348 | if (!h->non_got_ref) |
b34976b6 | 7349 | return TRUE; |
65f38f15 | 7350 | |
b186458a | 7351 | /* Don't generate a copy reloc for symbols defined in the executable. */ |
d93d1c80 | 7352 | if (!h->def_dynamic || !h->ref_regular || h->def_regular |
b186458a | 7353 | |
d93d1c80 AM |
7354 | /* If -z nocopyreloc was given, don't generate them either. */ |
7355 | || info->nocopyreloc | |
a127494f | 7356 | |
dce2246a | 7357 | /* If we don't find any dynamic relocs in read-only sections, then |
d93d1c80 | 7358 | we'll be keeping the dynamic relocs and avoiding the copy reloc. */ |
d311bc8b | 7359 | || (ELIMINATE_COPY_RELOCS && !alias_readonly_dynrelocs (h)) |
65f38f15 | 7360 | |
d93d1c80 AM |
7361 | /* Protected variables do not work with .dynbss. The copy in |
7362 | .dynbss won't be used by the shared library with the protected | |
7363 | definition for the variable. Text relocations are preferable | |
7364 | to an incorrect program. */ | |
7365 | || h->protected_def) | |
529fe20e | 7366 | return TRUE; |
a127494f | 7367 | |
5d35169e | 7368 | if (h->plt.plist != NULL) |
97b639ba AM |
7369 | { |
7370 | /* We should never get here, but unfortunately there are versions | |
7371 | of gcc out there that improperly (for this ABI) put initialized | |
7372 | function pointers, vtable refs and suchlike in read-only | |
7373 | sections. Allow them to proceed, but warn that this might | |
7374 | break at runtime. */ | |
25f53a85 | 7375 | info->callbacks->einfo |
c1c8c1ef | 7376 | (_("%P: copy reloc against `%pT' requires lazy plt linking; " |
25f53a85 | 7377 | "avoid setting LD_BIND_NOW=1 or upgrade gcc\n"), |
97b639ba AM |
7378 | h->root.root.string); |
7379 | } | |
5d35169e AM |
7380 | |
7381 | /* This is a reference to a symbol defined by a dynamic object which | |
7382 | is not a function. */ | |
7383 | ||
5bd4f169 AM |
7384 | /* We must allocate the symbol in our .dynbss section, which will |
7385 | become part of the .bss section of the executable. There will be | |
7386 | an entry for this symbol in the .dynsym section. The dynamic | |
7387 | object will contain position independent code, so all references | |
7388 | from the dynamic object to this symbol will go through the global | |
7389 | offset table. The dynamic linker will use the .dynsym entry to | |
7390 | determine the address it must put in the global offset table, so | |
7391 | both the dynamic object and the regular object will refer to the | |
7392 | same memory location for the variable. */ | |
5474d94f AM |
7393 | if ((h->root.u.def.section->flags & SEC_READONLY) != 0) |
7394 | { | |
7395 | s = htab->elf.sdynrelro; | |
7396 | srel = htab->elf.sreldynrelro; | |
7397 | } | |
7398 | else | |
7399 | { | |
7400 | s = htab->elf.sdynbss; | |
7401 | srel = htab->elf.srelbss; | |
7402 | } | |
1d7e9d18 | 7403 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0) |
5bd4f169 | 7404 | { |
4a7e5234 AM |
7405 | /* We must generate a R_PPC64_COPY reloc to tell the dynamic |
7406 | linker to copy the initial value out of the dynamic object | |
7407 | and into the runtime process image. */ | |
5474d94f | 7408 | srel->size += sizeof (Elf64_External_Rela); |
f5385ebf | 7409 | h->needs_copy = 1; |
5bd4f169 AM |
7410 | } |
7411 | ||
529fe20e AM |
7412 | /* We no longer want dyn_relocs. */ |
7413 | ((struct ppc_link_hash_entry *) h)->dyn_relocs = NULL; | |
6cabe1ea | 7414 | return _bfd_elf_adjust_dynamic_copy (info, h, s); |
5bd4f169 AM |
7415 | } |
7416 | ||
e86ce104 AM |
7417 | /* If given a function descriptor symbol, hide both the function code |
7418 | sym and the descriptor. */ | |
7419 | static void | |
4ce794b7 AM |
7420 | ppc64_elf_hide_symbol (struct bfd_link_info *info, |
7421 | struct elf_link_hash_entry *h, | |
7422 | bfd_boolean force_local) | |
e86ce104 | 7423 | { |
34814b9f | 7424 | struct ppc_link_hash_entry *eh; |
e86ce104 AM |
7425 | _bfd_elf_link_hash_hide_symbol (info, h, force_local); |
7426 | ||
34814b9f AM |
7427 | eh = (struct ppc_link_hash_entry *) h; |
7428 | if (eh->is_func_descriptor) | |
e86ce104 | 7429 | { |
34814b9f | 7430 | struct ppc_link_hash_entry *fh = eh->oh; |
e86ce104 | 7431 | |
721956f4 | 7432 | if (fh == NULL) |
d1329ca3 AM |
7433 | { |
7434 | const char *p, *q; | |
b8ac2841 | 7435 | struct elf_link_hash_table *htab = elf_hash_table (info); |
d1329ca3 AM |
7436 | char save; |
7437 | ||
7438 | /* We aren't supposed to use alloca in BFD because on | |
7439 | systems which do not have alloca the version in libiberty | |
7440 | calls xmalloc, which might cause the program to crash | |
7441 | when it runs out of memory. This function doesn't have a | |
7442 | return status, so there's no way to gracefully return an | |
7443 | error. So cheat. We know that string[-1] can be safely | |
34814b9f AM |
7444 | accessed; It's either a string in an ELF string table, |
7445 | or allocated in an objalloc structure. */ | |
d1329ca3 | 7446 | |
34814b9f | 7447 | p = eh->elf.root.root.string - 1; |
d1329ca3 AM |
7448 | save = *p; |
7449 | *(char *) p = '.'; | |
34814b9f | 7450 | fh = (struct ppc_link_hash_entry *) |
b8ac2841 | 7451 | elf_link_hash_lookup (htab, p, FALSE, FALSE, FALSE); |
d1329ca3 AM |
7452 | *(char *) p = save; |
7453 | ||
7454 | /* Unfortunately, if it so happens that the string we were | |
7455 | looking for was allocated immediately before this string, | |
7456 | then we overwrote the string terminator. That's the only | |
7457 | reason the lookup should fail. */ | |
7458 | if (fh == NULL) | |
7459 | { | |
34814b9f AM |
7460 | q = eh->elf.root.root.string + strlen (eh->elf.root.root.string); |
7461 | while (q >= eh->elf.root.root.string && *q == *p) | |
d1329ca3 | 7462 | --q, --p; |
34814b9f AM |
7463 | if (q < eh->elf.root.root.string && *p == '.') |
7464 | fh = (struct ppc_link_hash_entry *) | |
b8ac2841 | 7465 | elf_link_hash_lookup (htab, p, FALSE, FALSE, FALSE); |
d1329ca3 AM |
7466 | } |
7467 | if (fh != NULL) | |
7468 | { | |
34814b9f AM |
7469 | eh->oh = fh; |
7470 | fh->oh = eh; | |
d1329ca3 AM |
7471 | } |
7472 | } | |
e86ce104 | 7473 | if (fh != NULL) |
34814b9f | 7474 | _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local); |
e86ce104 AM |
7475 | } |
7476 | } | |
7477 | ||
411e1bfb | 7478 | static bfd_boolean |
8843416a AM |
7479 | get_sym_h (struct elf_link_hash_entry **hp, |
7480 | Elf_Internal_Sym **symp, | |
7481 | asection **symsecp, | |
f961d9dd | 7482 | unsigned char **tls_maskp, |
8843416a AM |
7483 | Elf_Internal_Sym **locsymsp, |
7484 | unsigned long r_symndx, | |
7485 | bfd *ibfd) | |
411e1bfb | 7486 | { |
0ffa91dd | 7487 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd); |
411e1bfb AM |
7488 | |
7489 | if (r_symndx >= symtab_hdr->sh_info) | |
7490 | { | |
7491 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd); | |
7492 | struct elf_link_hash_entry *h; | |
7493 | ||
7494 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
b31867b6 | 7495 | h = elf_follow_link (h); |
411e1bfb AM |
7496 | |
7497 | if (hp != NULL) | |
7498 | *hp = h; | |
7499 | ||
7500 | if (symp != NULL) | |
7501 | *symp = NULL; | |
7502 | ||
7503 | if (symsecp != NULL) | |
7504 | { | |
7505 | asection *symsec = NULL; | |
7506 | if (h->root.type == bfd_link_hash_defined | |
7507 | || h->root.type == bfd_link_hash_defweak) | |
7508 | symsec = h->root.u.def.section; | |
7509 | *symsecp = symsec; | |
7510 | } | |
7511 | ||
e7b938ca | 7512 | if (tls_maskp != NULL) |
411e1bfb AM |
7513 | { |
7514 | struct ppc_link_hash_entry *eh; | |
7515 | ||
7516 | eh = (struct ppc_link_hash_entry *) h; | |
e7b938ca | 7517 | *tls_maskp = &eh->tls_mask; |
411e1bfb AM |
7518 | } |
7519 | } | |
7520 | else | |
7521 | { | |
7522 | Elf_Internal_Sym *sym; | |
7523 | Elf_Internal_Sym *locsyms = *locsymsp; | |
7524 | ||
7525 | if (locsyms == NULL) | |
7526 | { | |
7527 | locsyms = (Elf_Internal_Sym *) symtab_hdr->contents; | |
7528 | if (locsyms == NULL) | |
7529 | locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr, | |
7530 | symtab_hdr->sh_info, | |
7531 | 0, NULL, NULL, NULL); | |
7532 | if (locsyms == NULL) | |
7533 | return FALSE; | |
7534 | *locsymsp = locsyms; | |
7535 | } | |
7536 | sym = locsyms + r_symndx; | |
7537 | ||
7538 | if (hp != NULL) | |
7539 | *hp = NULL; | |
7540 | ||
7541 | if (symp != NULL) | |
7542 | *symp = sym; | |
7543 | ||
7544 | if (symsecp != NULL) | |
cb33740c | 7545 | *symsecp = bfd_section_from_elf_index (ibfd, sym->st_shndx); |
411e1bfb | 7546 | |
e7b938ca | 7547 | if (tls_maskp != NULL) |
411e1bfb AM |
7548 | { |
7549 | struct got_entry **lgot_ents; | |
f961d9dd | 7550 | unsigned char *tls_mask; |
411e1bfb | 7551 | |
e7b938ca | 7552 | tls_mask = NULL; |
411e1bfb AM |
7553 | lgot_ents = elf_local_got_ents (ibfd); |
7554 | if (lgot_ents != NULL) | |
7555 | { | |
e054468f AM |
7556 | struct plt_entry **local_plt = (struct plt_entry **) |
7557 | (lgot_ents + symtab_hdr->sh_info); | |
f961d9dd | 7558 | unsigned char *lgot_masks = (unsigned char *) |
e054468f | 7559 | (local_plt + symtab_hdr->sh_info); |
e7b938ca | 7560 | tls_mask = &lgot_masks[r_symndx]; |
411e1bfb | 7561 | } |
e7b938ca | 7562 | *tls_maskp = tls_mask; |
411e1bfb AM |
7563 | } |
7564 | } | |
7565 | return TRUE; | |
7566 | } | |
7567 | ||
e7b938ca | 7568 | /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on |
951fd09b | 7569 | error, 2 on a toc GD type suitable for optimization, 3 on a toc LD |
ad8e1ba5 | 7570 | type suitable for optimization, and 1 otherwise. */ |
951fd09b AM |
7571 | |
7572 | static int | |
f961d9dd | 7573 | get_tls_mask (unsigned char **tls_maskp, |
3a71aa26 AM |
7574 | unsigned long *toc_symndx, |
7575 | bfd_vma *toc_addend, | |
0d4792f7 | 7576 | Elf_Internal_Sym **locsymsp, |
3a71aa26 AM |
7577 | const Elf_Internal_Rela *rel, |
7578 | bfd *ibfd) | |
411e1bfb AM |
7579 | { |
7580 | unsigned long r_symndx; | |
0d4792f7 | 7581 | int next_r; |
411e1bfb AM |
7582 | struct elf_link_hash_entry *h; |
7583 | Elf_Internal_Sym *sym; | |
7584 | asection *sec; | |
7585 | bfd_vma off; | |
7586 | ||
7587 | r_symndx = ELF64_R_SYM (rel->r_info); | |
e7b938ca | 7588 | if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd)) |
951fd09b | 7589 | return 0; |
411e1bfb | 7590 | |
37da22e5 AM |
7591 | if ((*tls_maskp != NULL |
7592 | && (**tls_maskp & TLS_TLS) != 0 | |
7593 | && **tls_maskp != (TLS_TLS | TLS_MARK)) | |
411e1bfb | 7594 | || sec == NULL |
6bee8834 | 7595 | || ppc64_elf_section_data (sec) == NULL |
7c8fe5c4 | 7596 | || ppc64_elf_section_data (sec)->sec_type != sec_toc) |
951fd09b | 7597 | return 1; |
411e1bfb AM |
7598 | |
7599 | /* Look inside a TOC section too. */ | |
7600 | if (h != NULL) | |
7601 | { | |
7602 | BFD_ASSERT (h->root.type == bfd_link_hash_defined); | |
7603 | off = h->root.u.def.value; | |
7604 | } | |
7605 | else | |
7606 | off = sym->st_value; | |
7607 | off += rel->r_addend; | |
7608 | BFD_ASSERT (off % 8 == 0); | |
3a71aa26 AM |
7609 | r_symndx = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8]; |
7610 | next_r = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8 + 1]; | |
0d4792f7 AM |
7611 | if (toc_symndx != NULL) |
7612 | *toc_symndx = r_symndx; | |
3a71aa26 AM |
7613 | if (toc_addend != NULL) |
7614 | *toc_addend = ppc64_elf_section_data (sec)->u.toc.add[off / 8]; | |
7615 | if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd)) | |
7616 | return 0; | |
854b41e7 | 7617 | if ((h == NULL || is_static_defined (h)) |
0d4792f7 AM |
7618 | && (next_r == -1 || next_r == -2)) |
7619 | return 1 - next_r; | |
951fd09b | 7620 | return 1; |
411e1bfb AM |
7621 | } |
7622 | ||
3b421ab3 AM |
7623 | /* Find (or create) an entry in the tocsave hash table. */ |
7624 | ||
7625 | static struct tocsave_entry * | |
7626 | tocsave_find (struct ppc_link_hash_table *htab, | |
7627 | enum insert_option insert, | |
7628 | Elf_Internal_Sym **local_syms, | |
7629 | const Elf_Internal_Rela *irela, | |
7630 | bfd *ibfd) | |
7631 | { | |
7632 | unsigned long r_indx; | |
7633 | struct elf_link_hash_entry *h; | |
7634 | Elf_Internal_Sym *sym; | |
7635 | struct tocsave_entry ent, *p; | |
7636 | hashval_t hash; | |
7637 | struct tocsave_entry **slot; | |
7638 | ||
7639 | r_indx = ELF64_R_SYM (irela->r_info); | |
7640 | if (!get_sym_h (&h, &sym, &ent.sec, NULL, local_syms, r_indx, ibfd)) | |
7641 | return NULL; | |
7642 | if (ent.sec == NULL || ent.sec->output_section == NULL) | |
7643 | { | |
4eca0228 | 7644 | _bfd_error_handler |
871b3ab2 | 7645 | (_("%pB: undefined symbol on R_PPC64_TOCSAVE relocation"), ibfd); |
3b421ab3 AM |
7646 | return NULL; |
7647 | } | |
7648 | ||
7649 | if (h != NULL) | |
7650 | ent.offset = h->root.u.def.value; | |
7651 | else | |
7652 | ent.offset = sym->st_value; | |
7653 | ent.offset += irela->r_addend; | |
7654 | ||
7655 | hash = tocsave_htab_hash (&ent); | |
7656 | slot = ((struct tocsave_entry **) | |
7657 | htab_find_slot_with_hash (htab->tocsave_htab, &ent, hash, insert)); | |
7658 | if (slot == NULL) | |
7659 | return NULL; | |
7660 | ||
7661 | if (*slot == NULL) | |
7662 | { | |
7663 | p = (struct tocsave_entry *) bfd_alloc (ibfd, sizeof (*p)); | |
7664 | if (p == NULL) | |
7665 | return NULL; | |
7666 | *p = ent; | |
7667 | *slot = p; | |
7668 | } | |
7669 | return *slot; | |
7670 | } | |
7671 | ||
754021d0 | 7672 | /* Adjust all global syms defined in opd sections. In gcc generated |
8387904d | 7673 | code for the old ABI, these will already have been done. */ |
754021d0 AM |
7674 | |
7675 | static bfd_boolean | |
7676 | adjust_opd_syms (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED) | |
7677 | { | |
7678 | struct ppc_link_hash_entry *eh; | |
7679 | asection *sym_sec; | |
74f0fb50 | 7680 | struct _opd_sec_data *opd; |
754021d0 AM |
7681 | |
7682 | if (h->root.type == bfd_link_hash_indirect) | |
7683 | return TRUE; | |
7684 | ||
754021d0 AM |
7685 | if (h->root.type != bfd_link_hash_defined |
7686 | && h->root.type != bfd_link_hash_defweak) | |
7687 | return TRUE; | |
7688 | ||
7689 | eh = (struct ppc_link_hash_entry *) h; | |
7690 | if (eh->adjust_done) | |
7691 | return TRUE; | |
7692 | ||
7693 | sym_sec = eh->elf.root.u.def.section; | |
74f0fb50 AM |
7694 | opd = get_opd_info (sym_sec); |
7695 | if (opd != NULL && opd->adjust != NULL) | |
754021d0 | 7696 | { |
51aecdc5 | 7697 | long adjust = opd->adjust[OPD_NDX (eh->elf.root.u.def.value)]; |
4025353c AM |
7698 | if (adjust == -1) |
7699 | { | |
7700 | /* This entry has been deleted. */ | |
b3fac117 | 7701 | asection *dsec = ppc64_elf_tdata (sym_sec->owner)->deleted_section; |
81688140 AM |
7702 | if (dsec == NULL) |
7703 | { | |
7704 | for (dsec = sym_sec->owner->sections; dsec; dsec = dsec->next) | |
dbaa2011 | 7705 | if (discarded_section (dsec)) |
81688140 | 7706 | { |
b3fac117 | 7707 | ppc64_elf_tdata (sym_sec->owner)->deleted_section = dsec; |
81688140 AM |
7708 | break; |
7709 | } | |
7710 | } | |
4025353c | 7711 | eh->elf.root.u.def.value = 0; |
81688140 | 7712 | eh->elf.root.u.def.section = dsec; |
4025353c AM |
7713 | } |
7714 | else | |
7715 | eh->elf.root.u.def.value += adjust; | |
754021d0 AM |
7716 | eh->adjust_done = 1; |
7717 | } | |
7718 | return TRUE; | |
7719 | } | |
7720 | ||
8c1d1bb8 | 7721 | /* Handles decrementing dynamic reloc counts for the reloc specified by |
19e08130 | 7722 | R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM |
8c1d1bb8 AM |
7723 | have already been determined. */ |
7724 | ||
7725 | static bfd_boolean | |
7726 | dec_dynrel_count (bfd_vma r_info, | |
7727 | asection *sec, | |
7728 | struct bfd_link_info *info, | |
7729 | Elf_Internal_Sym **local_syms, | |
7730 | struct elf_link_hash_entry *h, | |
19e08130 | 7731 | Elf_Internal_Sym *sym) |
8c1d1bb8 AM |
7732 | { |
7733 | enum elf_ppc64_reloc_type r_type; | |
19e08130 | 7734 | asection *sym_sec = NULL; |
8c1d1bb8 AM |
7735 | |
7736 | /* Can this reloc be dynamic? This switch, and later tests here | |
7737 | should be kept in sync with the code in check_relocs. */ | |
7738 | r_type = ELF64_R_TYPE (r_info); | |
7739 | switch (r_type) | |
7740 | { | |
7741 | default: | |
7742 | return TRUE; | |
7743 | ||
7744 | case R_PPC64_TPREL16: | |
7745 | case R_PPC64_TPREL16_LO: | |
7746 | case R_PPC64_TPREL16_HI: | |
7747 | case R_PPC64_TPREL16_HA: | |
7748 | case R_PPC64_TPREL16_DS: | |
7749 | case R_PPC64_TPREL16_LO_DS: | |
f9c6b907 AM |
7750 | case R_PPC64_TPREL16_HIGH: |
7751 | case R_PPC64_TPREL16_HIGHA: | |
8c1d1bb8 AM |
7752 | case R_PPC64_TPREL16_HIGHER: |
7753 | case R_PPC64_TPREL16_HIGHERA: | |
7754 | case R_PPC64_TPREL16_HIGHEST: | |
7755 | case R_PPC64_TPREL16_HIGHESTA: | |
8c1d1bb8 AM |
7756 | case R_PPC64_TPREL64: |
7757 | case R_PPC64_DTPMOD64: | |
7758 | case R_PPC64_DTPREL64: | |
7759 | case R_PPC64_ADDR64: | |
7760 | case R_PPC64_REL30: | |
7761 | case R_PPC64_REL32: | |
7762 | case R_PPC64_REL64: | |
7763 | case R_PPC64_ADDR14: | |
7764 | case R_PPC64_ADDR14_BRNTAKEN: | |
7765 | case R_PPC64_ADDR14_BRTAKEN: | |
7766 | case R_PPC64_ADDR16: | |
7767 | case R_PPC64_ADDR16_DS: | |
7768 | case R_PPC64_ADDR16_HA: | |
7769 | case R_PPC64_ADDR16_HI: | |
f9c6b907 AM |
7770 | case R_PPC64_ADDR16_HIGH: |
7771 | case R_PPC64_ADDR16_HIGHA: | |
8c1d1bb8 AM |
7772 | case R_PPC64_ADDR16_HIGHER: |
7773 | case R_PPC64_ADDR16_HIGHERA: | |
7774 | case R_PPC64_ADDR16_HIGHEST: | |
7775 | case R_PPC64_ADDR16_HIGHESTA: | |
7776 | case R_PPC64_ADDR16_LO: | |
7777 | case R_PPC64_ADDR16_LO_DS: | |
7778 | case R_PPC64_ADDR24: | |
7779 | case R_PPC64_ADDR32: | |
7780 | case R_PPC64_UADDR16: | |
7781 | case R_PPC64_UADDR32: | |
7782 | case R_PPC64_UADDR64: | |
7783 | case R_PPC64_TOC: | |
7784 | break; | |
7785 | } | |
7786 | ||
7787 | if (local_syms != NULL) | |
7788 | { | |
7789 | unsigned long r_symndx; | |
8c1d1bb8 AM |
7790 | bfd *ibfd = sec->owner; |
7791 | ||
7792 | r_symndx = ELF64_R_SYM (r_info); | |
7793 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, local_syms, r_symndx, ibfd)) | |
7794 | return FALSE; | |
7795 | } | |
7796 | ||
0e1862bb | 7797 | if ((bfd_link_pic (info) |
1d483afe | 7798 | && (must_be_dyn_reloc (info, r_type) |
8c1d1bb8 | 7799 | || (h != NULL |
198f1157 | 7800 | && (!SYMBOLIC_BIND (info, h) |
8c1d1bb8 AM |
7801 | || h->root.type == bfd_link_hash_defweak |
7802 | || !h->def_regular)))) | |
7803 | || (ELIMINATE_COPY_RELOCS | |
0e1862bb | 7804 | && !bfd_link_pic (info) |
8c1d1bb8 AM |
7805 | && h != NULL |
7806 | && (h->root.type == bfd_link_hash_defweak | |
7807 | || !h->def_regular))) | |
7808 | ; | |
7809 | else | |
7810 | return TRUE; | |
7811 | ||
7812 | if (h != NULL) | |
6edfbbad | 7813 | { |
19e08130 AM |
7814 | struct elf_dyn_relocs *p; |
7815 | struct elf_dyn_relocs **pp; | |
7816 | pp = &((struct ppc_link_hash_entry *) h)->dyn_relocs; | |
7817 | ||
7818 | /* elf_gc_sweep may have already removed all dyn relocs associated | |
7819 | with local syms for a given section. Also, symbol flags are | |
7820 | changed by elf_gc_sweep_symbol, confusing the test above. Don't | |
7821 | report a dynreloc miscount. */ | |
7822 | if (*pp == NULL && info->gc_sections) | |
7823 | return TRUE; | |
7824 | ||
7825 | while ((p = *pp) != NULL) | |
60124e18 | 7826 | { |
19e08130 AM |
7827 | if (p->sec == sec) |
7828 | { | |
7829 | if (!must_be_dyn_reloc (info, r_type)) | |
7830 | p->pc_count -= 1; | |
7831 | p->count -= 1; | |
7832 | if (p->count == 0) | |
7833 | *pp = p->next; | |
7834 | return TRUE; | |
7835 | } | |
7836 | pp = &p->next; | |
60124e18 | 7837 | } |
6edfbbad | 7838 | } |
19e08130 AM |
7839 | else |
7840 | { | |
7841 | struct ppc_dyn_relocs *p; | |
7842 | struct ppc_dyn_relocs **pp; | |
7843 | void *vpp; | |
7844 | bfd_boolean is_ifunc; | |
8c1d1bb8 | 7845 | |
19e08130 AM |
7846 | if (local_syms == NULL) |
7847 | sym_sec = bfd_section_from_elf_index (sec->owner, sym->st_shndx); | |
7848 | if (sym_sec == NULL) | |
7849 | sym_sec = sec; | |
c57da1a7 | 7850 | |
19e08130 AM |
7851 | vpp = &elf_section_data (sym_sec)->local_dynrel; |
7852 | pp = (struct ppc_dyn_relocs **) vpp; | |
7853 | ||
7854 | if (*pp == NULL && info->gc_sections) | |
7855 | return TRUE; | |
7856 | ||
7857 | is_ifunc = ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC; | |
7858 | while ((p = *pp) != NULL) | |
8c1d1bb8 | 7859 | { |
19e08130 AM |
7860 | if (p->sec == sec && p->ifunc == is_ifunc) |
7861 | { | |
7862 | p->count -= 1; | |
7863 | if (p->count == 0) | |
7864 | *pp = p->next; | |
7865 | return TRUE; | |
7866 | } | |
7867 | pp = &p->next; | |
8c1d1bb8 | 7868 | } |
8c1d1bb8 AM |
7869 | } |
7870 | ||
695344c0 | 7871 | /* xgettext:c-format */ |
cf97bcb0 AM |
7872 | _bfd_error_handler (_("dynreloc miscount for %pB, section %pA"), |
7873 | sec->owner, sec); | |
8c1d1bb8 AM |
7874 | bfd_set_error (bfd_error_bad_value); |
7875 | return FALSE; | |
7876 | } | |
7877 | ||
754021d0 AM |
7878 | /* Remove unused Official Procedure Descriptor entries. Currently we |
7879 | only remove those associated with functions in discarded link-once | |
7880 | sections, or weakly defined functions that have been overridden. It | |
7881 | would be possible to remove many more entries for statically linked | |
7882 | applications. */ | |
7883 | ||
b34976b6 | 7884 | bfd_boolean |
e7d1c40c | 7885 | ppc64_elf_edit_opd (struct bfd_link_info *info) |
1e2f5b6e AM |
7886 | { |
7887 | bfd *ibfd; | |
754021d0 | 7888 | bfd_boolean some_edited = FALSE; |
3f764659 | 7889 | asection *need_pad = NULL; |
e7d1c40c AM |
7890 | struct ppc_link_hash_table *htab; |
7891 | ||
7892 | htab = ppc_hash_table (info); | |
7893 | if (htab == NULL) | |
7894 | return FALSE; | |
1e2f5b6e | 7895 | |
c72f2fb2 | 7896 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
1e2f5b6e AM |
7897 | { |
7898 | asection *sec; | |
7899 | Elf_Internal_Rela *relstart, *rel, *relend; | |
7900 | Elf_Internal_Shdr *symtab_hdr; | |
6cdc0ccc | 7901 | Elf_Internal_Sym *local_syms; |
74f0fb50 | 7902 | struct _opd_sec_data *opd; |
51aecdc5 | 7903 | bfd_boolean need_edit, add_aux_fields, broken; |
3f764659 | 7904 | bfd_size_type cnt_16b = 0; |
1e2f5b6e | 7905 | |
854b41e7 AM |
7906 | if (!is_ppc64_elf (ibfd)) |
7907 | continue; | |
7908 | ||
1e2f5b6e | 7909 | sec = bfd_get_section_by_name (ibfd, ".opd"); |
46de2a7c | 7910 | if (sec == NULL || sec->size == 0) |
1e2f5b6e AM |
7911 | continue; |
7912 | ||
dbaa2011 | 7913 | if (sec->sec_info_type == SEC_INFO_TYPE_JUST_SYMS) |
4b85d634 AM |
7914 | continue; |
7915 | ||
1e2f5b6e AM |
7916 | if (sec->output_section == bfd_abs_section_ptr) |
7917 | continue; | |
7918 | ||
7919 | /* Look through the section relocs. */ | |
7920 | if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0) | |
7921 | continue; | |
7922 | ||
6cdc0ccc | 7923 | local_syms = NULL; |
0ffa91dd | 7924 | symtab_hdr = &elf_symtab_hdr (ibfd); |
1e2f5b6e AM |
7925 | |
7926 | /* Read the relocations. */ | |
4ce794b7 | 7927 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, |
45d6a902 | 7928 | info->keep_memory); |
1e2f5b6e | 7929 | if (relstart == NULL) |
b34976b6 | 7930 | return FALSE; |
1e2f5b6e AM |
7931 | |
7932 | /* First run through the relocs to check they are sane, and to | |
7933 | determine whether we need to edit this opd section. */ | |
b34976b6 | 7934 | need_edit = FALSE; |
51aecdc5 | 7935 | broken = FALSE; |
3f764659 | 7936 | need_pad = sec; |
1e2f5b6e | 7937 | relend = relstart + sec->reloc_count; |
50bc7936 | 7938 | for (rel = relstart; rel < relend; ) |
1e2f5b6e | 7939 | { |
04c9666a | 7940 | enum elf_ppc64_reloc_type r_type; |
1e2f5b6e AM |
7941 | unsigned long r_symndx; |
7942 | asection *sym_sec; | |
7943 | struct elf_link_hash_entry *h; | |
7944 | Elf_Internal_Sym *sym; | |
51aecdc5 | 7945 | bfd_vma offset; |
1e2f5b6e | 7946 | |
51aecdc5 | 7947 | /* .opd contains an array of 16 or 24 byte entries. We're |
1e2f5b6e AM |
7948 | only interested in the reloc pointing to a function entry |
7949 | point. */ | |
51aecdc5 AM |
7950 | offset = rel->r_offset; |
7951 | if (rel + 1 == relend | |
7952 | || rel[1].r_offset != offset + 8) | |
1e2f5b6e AM |
7953 | { |
7954 | /* If someone messes with .opd alignment then after a | |
7955 | "ld -r" we might have padding in the middle of .opd. | |
7956 | Also, there's nothing to prevent someone putting | |
7957 | something silly in .opd with the assembler. No .opd | |
b34976b6 | 7958 | optimization for them! */ |
3f764659 | 7959 | broken_opd: |
4eca0228 | 7960 | _bfd_error_handler |
871b3ab2 | 7961 | (_("%pB: .opd is not a regular array of opd entries"), ibfd); |
51aecdc5 | 7962 | broken = TRUE; |
1e2f5b6e AM |
7963 | break; |
7964 | } | |
7965 | ||
50bc7936 AM |
7966 | if ((r_type = ELF64_R_TYPE (rel->r_info)) != R_PPC64_ADDR64 |
7967 | || (r_type = ELF64_R_TYPE ((rel + 1)->r_info)) != R_PPC64_TOC) | |
7968 | { | |
4eca0228 | 7969 | _bfd_error_handler |
695344c0 | 7970 | /* xgettext:c-format */ |
871b3ab2 | 7971 | (_("%pB: unexpected reloc type %u in .opd section"), |
d003868e | 7972 | ibfd, r_type); |
51aecdc5 | 7973 | broken = TRUE; |
50bc7936 AM |
7974 | break; |
7975 | } | |
7976 | ||
1e2f5b6e | 7977 | r_symndx = ELF64_R_SYM (rel->r_info); |
411e1bfb AM |
7978 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, |
7979 | r_symndx, ibfd)) | |
50bc7936 | 7980 | goto error_ret; |
1e2f5b6e AM |
7981 | |
7982 | if (sym_sec == NULL || sym_sec->owner == NULL) | |
7983 | { | |
411e1bfb AM |
7984 | const char *sym_name; |
7985 | if (h != NULL) | |
7986 | sym_name = h->root.root.string; | |
7987 | else | |
26c61ae5 L |
7988 | sym_name = bfd_elf_sym_name (ibfd, symtab_hdr, sym, |
7989 | sym_sec); | |
411e1bfb | 7990 | |
4eca0228 | 7991 | _bfd_error_handler |
695344c0 | 7992 | /* xgettext:c-format */ |
871b3ab2 | 7993 | (_("%pB: undefined sym `%s' in .opd section"), |
d003868e | 7994 | ibfd, sym_name); |
51aecdc5 | 7995 | broken = TRUE; |
1e2f5b6e AM |
7996 | break; |
7997 | } | |
7998 | ||
51020317 AM |
7999 | /* opd entries are always for functions defined in the |
8000 | current input bfd. If the symbol isn't defined in the | |
8001 | input bfd, then we won't be using the function in this | |
8002 | bfd; It must be defined in a linkonce section in another | |
8003 | bfd, or is weak. It's also possible that we are | |
8004 | discarding the function due to a linker script /DISCARD/, | |
8005 | which we test for via the output_section. */ | |
8006 | if (sym_sec->owner != ibfd | |
8007 | || sym_sec->output_section == bfd_abs_section_ptr) | |
b34976b6 | 8008 | need_edit = TRUE; |
1e2f5b6e | 8009 | |
50bc7936 | 8010 | rel += 2; |
51aecdc5 AM |
8011 | if (rel + 1 == relend |
8012 | || (rel + 2 < relend | |
8013 | && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_TOC)) | |
8014 | ++rel; | |
8015 | ||
8016 | if (rel == relend) | |
3f764659 JJ |
8017 | { |
8018 | if (sec->size == offset + 24) | |
8019 | { | |
8020 | need_pad = NULL; | |
8021 | break; | |
8022 | } | |
51aecdc5 | 8023 | if (sec->size == offset + 16) |
3f764659 JJ |
8024 | { |
8025 | cnt_16b++; | |
8026 | break; | |
8027 | } | |
8028 | goto broken_opd; | |
8029 | } | |
3f764659 JJ |
8030 | else if (rel + 1 < relend |
8031 | && ELF64_R_TYPE (rel[0].r_info) == R_PPC64_ADDR64 | |
8032 | && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOC) | |
8033 | { | |
51aecdc5 AM |
8034 | if (rel[0].r_offset == offset + 16) |
8035 | cnt_16b++; | |
8036 | else if (rel[0].r_offset != offset + 24) | |
8037 | goto broken_opd; | |
3f764659 JJ |
8038 | } |
8039 | else | |
8040 | goto broken_opd; | |
1e2f5b6e AM |
8041 | } |
8042 | ||
e7d1c40c | 8043 | add_aux_fields = htab->params->non_overlapping_opd && cnt_16b > 0; |
3f764659 | 8044 | |
51aecdc5 | 8045 | if (!broken && (need_edit || add_aux_fields)) |
1e2f5b6e AM |
8046 | { |
8047 | Elf_Internal_Rela *write_rel; | |
d4730f92 | 8048 | Elf_Internal_Shdr *rel_hdr; |
1e2f5b6e | 8049 | bfd_byte *rptr, *wptr; |
983bddc8 | 8050 | bfd_byte *new_contents; |
74f0fb50 AM |
8051 | bfd_size_type amt; |
8052 | ||
983bddc8 | 8053 | new_contents = NULL; |
51aecdc5 | 8054 | amt = OPD_NDX (sec->size) * sizeof (long); |
74f0fb50 | 8055 | opd = &ppc64_elf_section_data (sec)->u.opd; |
33c0ec9d | 8056 | opd->adjust = bfd_zalloc (sec->owner, amt); |
74f0fb50 AM |
8057 | if (opd->adjust == NULL) |
8058 | return FALSE; | |
1e2f5b6e AM |
8059 | |
8060 | /* This seems a waste of time as input .opd sections are all | |
8061 | zeros as generated by gcc, but I suppose there's no reason | |
8062 | this will always be so. We might start putting something in | |
8063 | the third word of .opd entries. */ | |
8064 | if ((sec->flags & SEC_IN_MEMORY) == 0) | |
8065 | { | |
eea6121a AM |
8066 | bfd_byte *loc; |
8067 | if (!bfd_malloc_and_get_section (ibfd, sec, &loc)) | |
6cdc0ccc | 8068 | { |
eea6121a AM |
8069 | if (loc != NULL) |
8070 | free (loc); | |
50bc7936 | 8071 | error_ret: |
6cdc0ccc AM |
8072 | if (local_syms != NULL |
8073 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
8074 | free (local_syms); | |
6cdc0ccc AM |
8075 | if (elf_section_data (sec)->relocs != relstart) |
8076 | free (relstart); | |
b34976b6 | 8077 | return FALSE; |
6cdc0ccc | 8078 | } |
1e2f5b6e AM |
8079 | sec->contents = loc; |
8080 | sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS); | |
8081 | } | |
8082 | ||
8083 | elf_section_data (sec)->relocs = relstart; | |
8084 | ||
3f764659 | 8085 | new_contents = sec->contents; |
3f764659 JJ |
8086 | if (add_aux_fields) |
8087 | { | |
8088 | new_contents = bfd_malloc (sec->size + cnt_16b * 8); | |
8089 | if (new_contents == NULL) | |
8090 | return FALSE; | |
51aecdc5 | 8091 | need_pad = NULL; |
3f764659 | 8092 | } |
b4f4e59f AM |
8093 | wptr = new_contents; |
8094 | rptr = sec->contents; | |
1e2f5b6e | 8095 | write_rel = relstart; |
51aecdc5 | 8096 | for (rel = relstart; rel < relend; ) |
1e2f5b6e | 8097 | { |
50bc7936 AM |
8098 | unsigned long r_symndx; |
8099 | asection *sym_sec; | |
8100 | struct elf_link_hash_entry *h; | |
51aecdc5 | 8101 | struct ppc_link_hash_entry *fdh = NULL; |
50bc7936 | 8102 | Elf_Internal_Sym *sym; |
51aecdc5 AM |
8103 | long opd_ent_size; |
8104 | Elf_Internal_Rela *next_rel; | |
8105 | bfd_boolean skip; | |
50bc7936 AM |
8106 | |
8107 | r_symndx = ELF64_R_SYM (rel->r_info); | |
8108 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
d37c89e5 | 8109 | r_symndx, ibfd)) |
50bc7936 AM |
8110 | goto error_ret; |
8111 | ||
51aecdc5 AM |
8112 | next_rel = rel + 2; |
8113 | if (next_rel + 1 == relend | |
8114 | || (next_rel + 2 < relend | |
8115 | && ELF64_R_TYPE (next_rel[2].r_info) == R_PPC64_TOC)) | |
8116 | ++next_rel; | |
8117 | ||
8118 | /* See if the .opd entry is full 24 byte or | |
8119 | 16 byte (with fd_aux entry overlapped with next | |
8120 | fd_func). */ | |
8121 | opd_ent_size = 24; | |
8122 | if (next_rel == relend) | |
1e2f5b6e | 8123 | { |
51aecdc5 | 8124 | if (sec->size == rel->r_offset + 16) |
3f764659 | 8125 | opd_ent_size = 16; |
51aecdc5 AM |
8126 | } |
8127 | else if (next_rel->r_offset == rel->r_offset + 16) | |
8128 | opd_ent_size = 16; | |
3f764659 | 8129 | |
51aecdc5 AM |
8130 | if (h != NULL |
8131 | && h->root.root.string[0] == '.') | |
8132 | { | |
8c5b4e52 AM |
8133 | fdh = ((struct ppc_link_hash_entry *) h)->oh; |
8134 | if (fdh != NULL) | |
8135 | { | |
8136 | fdh = ppc_follow_link (fdh); | |
8137 | if (fdh->elf.root.type != bfd_link_hash_defined | |
8138 | && fdh->elf.root.type != bfd_link_hash_defweak) | |
8139 | fdh = NULL; | |
8140 | } | |
51aecdc5 | 8141 | } |
1e2f5b6e | 8142 | |
51aecdc5 AM |
8143 | skip = (sym_sec->owner != ibfd |
8144 | || sym_sec->output_section == bfd_abs_section_ptr); | |
8145 | if (skip) | |
8146 | { | |
8147 | if (fdh != NULL && sym_sec->owner == ibfd) | |
a4aa0fb7 | 8148 | { |
51aecdc5 AM |
8149 | /* Arrange for the function descriptor sym |
8150 | to be dropped. */ | |
8151 | fdh->elf.root.u.def.value = 0; | |
8152 | fdh->elf.root.u.def.section = sym_sec; | |
a4aa0fb7 | 8153 | } |
51aecdc5 | 8154 | opd->adjust[OPD_NDX (rel->r_offset)] = -1; |
1e2f5b6e | 8155 | |
0e1862bb | 8156 | if (NO_OPD_RELOCS || bfd_link_relocatable (info)) |
51aecdc5 AM |
8157 | rel = next_rel; |
8158 | else | |
8159 | while (1) | |
8160 | { | |
8161 | if (!dec_dynrel_count (rel->r_info, sec, info, | |
8162 | NULL, h, sym)) | |
8163 | goto error_ret; | |
754021d0 | 8164 | |
51aecdc5 AM |
8165 | if (++rel == next_rel) |
8166 | break; | |
1e2f5b6e | 8167 | |
51aecdc5 AM |
8168 | r_symndx = ELF64_R_SYM (rel->r_info); |
8169 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
8170 | r_symndx, ibfd)) | |
8171 | goto error_ret; | |
8172 | } | |
50bc7936 AM |
8173 | } |
8174 | else | |
1e2f5b6e | 8175 | { |
51aecdc5 AM |
8176 | /* We'll be keeping this opd entry. */ |
8177 | long adjust; | |
8178 | ||
8179 | if (fdh != NULL) | |
8180 | { | |
8181 | /* Redefine the function descriptor symbol to | |
8182 | this location in the opd section. It is | |
8183 | necessary to update the value here rather | |
8184 | than using an array of adjustments as we do | |
8185 | for local symbols, because various places | |
8186 | in the generic ELF code use the value | |
8187 | stored in u.def.value. */ | |
8188 | fdh->elf.root.u.def.value = wptr - new_contents; | |
8189 | fdh->adjust_done = 1; | |
8190 | } | |
8191 | ||
8192 | /* Local syms are a bit tricky. We could | |
8193 | tweak them as they can be cached, but | |
8194 | we'd need to look through the local syms | |
8195 | for the function descriptor sym which we | |
8196 | don't have at the moment. So keep an | |
8197 | array of adjustments. */ | |
8198 | adjust = (wptr - new_contents) - (rptr - sec->contents); | |
8199 | opd->adjust[OPD_NDX (rel->r_offset)] = adjust; | |
8200 | ||
8201 | if (wptr != rptr) | |
8202 | memcpy (wptr, rptr, opd_ent_size); | |
8203 | wptr += opd_ent_size; | |
8204 | if (add_aux_fields && opd_ent_size == 16) | |
8205 | { | |
8206 | memset (wptr, '\0', 8); | |
8207 | wptr += 8; | |
8208 | } | |
8209 | ||
50bc7936 | 8210 | /* We need to adjust any reloc offsets to point to the |
51aecdc5 AM |
8211 | new opd entries. */ |
8212 | for ( ; rel != next_rel; ++rel) | |
8213 | { | |
8214 | rel->r_offset += adjust; | |
8215 | if (write_rel != rel) | |
8216 | memcpy (write_rel, rel, sizeof (*rel)); | |
8217 | ++write_rel; | |
8218 | } | |
1e2f5b6e | 8219 | } |
51aecdc5 AM |
8220 | |
8221 | rptr += opd_ent_size; | |
1e2f5b6e AM |
8222 | } |
8223 | ||
3f764659 | 8224 | sec->size = wptr - new_contents; |
1e2f5b6e | 8225 | sec->reloc_count = write_rel - relstart; |
3f764659 JJ |
8226 | if (add_aux_fields) |
8227 | { | |
8228 | free (sec->contents); | |
8229 | sec->contents = new_contents; | |
8230 | } | |
8231 | ||
05bf9422 | 8232 | /* Fudge the header size too, as this is used later in |
cdcf6e38 | 8233 | elf_bfd_final_link if we are emitting relocs. */ |
d4730f92 BS |
8234 | rel_hdr = _bfd_elf_single_rel_hdr (sec); |
8235 | rel_hdr->sh_size = sec->reloc_count * rel_hdr->sh_entsize; | |
754021d0 | 8236 | some_edited = TRUE; |
1e2f5b6e | 8237 | } |
6cdc0ccc | 8238 | else if (elf_section_data (sec)->relocs != relstart) |
1e2f5b6e | 8239 | free (relstart); |
6cdc0ccc | 8240 | |
411e1bfb AM |
8241 | if (local_syms != NULL |
8242 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
8243 | { | |
8244 | if (!info->keep_memory) | |
8245 | free (local_syms); | |
8246 | else | |
8247 | symtab_hdr->contents = (unsigned char *) local_syms; | |
8248 | } | |
8249 | } | |
8250 | ||
754021d0 AM |
8251 | if (some_edited) |
8252 | elf_link_hash_traverse (elf_hash_table (info), adjust_opd_syms, NULL); | |
8253 | ||
3f764659 JJ |
8254 | /* If we are doing a final link and the last .opd entry is just 16 byte |
8255 | long, add a 8 byte padding after it. */ | |
0e1862bb | 8256 | if (need_pad != NULL && !bfd_link_relocatable (info)) |
3f764659 JJ |
8257 | { |
8258 | bfd_byte *p; | |
8259 | ||
8260 | if ((need_pad->flags & SEC_IN_MEMORY) == 0) | |
8261 | { | |
8262 | BFD_ASSERT (need_pad->size > 0); | |
8263 | ||
8264 | p = bfd_malloc (need_pad->size + 8); | |
8265 | if (p == NULL) | |
8266 | return FALSE; | |
699733f6 | 8267 | |
3f764659 JJ |
8268 | if (! bfd_get_section_contents (need_pad->owner, need_pad, |
8269 | p, 0, need_pad->size)) | |
8270 | return FALSE; | |
8271 | ||
8272 | need_pad->contents = p; | |
8273 | need_pad->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS); | |
8274 | } | |
8275 | else | |
8276 | { | |
8277 | p = bfd_realloc (need_pad->contents, need_pad->size + 8); | |
8278 | if (p == NULL) | |
8279 | return FALSE; | |
8280 | ||
8281 | need_pad->contents = p; | |
8282 | } | |
8283 | ||
8284 | memset (need_pad->contents + need_pad->size, 0, 8); | |
8285 | need_pad->size += 8; | |
8286 | } | |
8287 | ||
411e1bfb AM |
8288 | return TRUE; |
8289 | } | |
8290 | ||
3e04d765 AM |
8291 | /* Analyze inline PLT call relocations to see whether calls to locally |
8292 | defined functions can be converted to direct calls. */ | |
8293 | ||
8294 | bfd_boolean | |
8295 | ppc64_elf_inline_plt (struct bfd_link_info *info) | |
8296 | { | |
8297 | struct ppc_link_hash_table *htab; | |
8298 | bfd *ibfd; | |
8299 | asection *sec; | |
8300 | bfd_vma low_vma, high_vma, limit; | |
8301 | ||
8302 | htab = ppc_hash_table (info); | |
8303 | if (htab == NULL) | |
8304 | return FALSE; | |
8305 | ||
8306 | /* A bl insn can reach -0x2000000 to 0x1fffffc. The limit is | |
8307 | reduced somewhat to cater for possible stubs that might be added | |
8308 | between the call and its destination. */ | |
8309 | if (htab->params->group_size < 0) | |
8310 | { | |
8311 | limit = -htab->params->group_size; | |
8312 | if (limit == 1) | |
8313 | limit = 0x1e00000; | |
8314 | } | |
8315 | else | |
8316 | { | |
8317 | limit = htab->params->group_size; | |
8318 | if (limit == 1) | |
8319 | limit = 0x1c00000; | |
8320 | } | |
8321 | ||
8322 | low_vma = -1; | |
8323 | high_vma = 0; | |
8324 | for (sec = info->output_bfd->sections; sec != NULL; sec = sec->next) | |
8325 | if ((sec->flags & (SEC_ALLOC | SEC_CODE)) == (SEC_ALLOC | SEC_CODE)) | |
8326 | { | |
8327 | if (low_vma > sec->vma) | |
8328 | low_vma = sec->vma; | |
8329 | if (high_vma < sec->vma + sec->size) | |
8330 | high_vma = sec->vma + sec->size; | |
8331 | } | |
8332 | ||
8333 | /* If a "bl" can reach anywhere in local code sections, then we can | |
8334 | convert all inline PLT sequences to direct calls when the symbol | |
8335 | is local. */ | |
8336 | if (high_vma - low_vma < limit) | |
8337 | { | |
8338 | htab->can_convert_all_inline_plt = 1; | |
8339 | return TRUE; | |
8340 | } | |
8341 | ||
8342 | /* Otherwise, go looking through relocs for cases where a direct | |
8343 | call won't reach. Mark the symbol on any such reloc to disable | |
8344 | the optimization and keep the PLT entry as it seems likely that | |
8345 | this will be better than creating trampolines. Note that this | |
8346 | will disable the optimization for all inline PLT calls to a | |
8347 | particular symbol, not just those that won't reach. The | |
8348 | difficulty in doing a more precise optimization is that the | |
8349 | linker needs to make a decision depending on whether a | |
8350 | particular R_PPC64_PLTCALL insn can be turned into a direct | |
8351 | call, for each of the R_PPC64_PLTSEQ and R_PPC64_PLT16* insns in | |
8352 | the sequence, and there is nothing that ties those relocs | |
8353 | together except their symbol. */ | |
8354 | ||
8355 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) | |
8356 | { | |
8357 | Elf_Internal_Shdr *symtab_hdr; | |
8358 | Elf_Internal_Sym *local_syms; | |
8359 | ||
8360 | if (!is_ppc64_elf (ibfd)) | |
8361 | continue; | |
8362 | ||
8363 | local_syms = NULL; | |
8364 | symtab_hdr = &elf_symtab_hdr (ibfd); | |
8365 | ||
8366 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
8367 | if (ppc64_elf_section_data (sec)->has_pltcall | |
8368 | && !bfd_is_abs_section (sec->output_section)) | |
8369 | { | |
8370 | Elf_Internal_Rela *relstart, *rel, *relend; | |
8371 | ||
8372 | /* Read the relocations. */ | |
8373 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, | |
8374 | info->keep_memory); | |
8375 | if (relstart == NULL) | |
8376 | return FALSE; | |
8377 | ||
8378 | relend = relstart + sec->reloc_count; | |
8379 | for (rel = relstart; rel < relend; ) | |
8380 | { | |
8381 | enum elf_ppc64_reloc_type r_type; | |
8382 | unsigned long r_symndx; | |
8383 | asection *sym_sec; | |
8384 | struct elf_link_hash_entry *h; | |
8385 | Elf_Internal_Sym *sym; | |
8386 | unsigned char *tls_maskp; | |
8387 | ||
8388 | r_type = ELF64_R_TYPE (rel->r_info); | |
8389 | if (r_type != R_PPC64_PLTCALL) | |
8390 | continue; | |
8391 | ||
8392 | r_symndx = ELF64_R_SYM (rel->r_info); | |
8393 | if (!get_sym_h (&h, &sym, &sym_sec, &tls_maskp, &local_syms, | |
8394 | r_symndx, ibfd)) | |
8395 | { | |
8396 | if (elf_section_data (sec)->relocs != relstart) | |
8397 | free (relstart); | |
8398 | if (local_syms != NULL | |
8399 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
8400 | free (local_syms); | |
8401 | return FALSE; | |
8402 | } | |
8403 | ||
8404 | if (sym_sec != NULL && sym_sec->output_section != NULL) | |
8405 | { | |
8406 | bfd_vma from, to; | |
8407 | if (h != NULL) | |
8408 | to = h->root.u.def.value; | |
8409 | else | |
8410 | to = sym->st_value; | |
8411 | to += (rel->r_addend | |
8412 | + sym_sec->output_offset | |
8413 | + sym_sec->output_section->vma); | |
8414 | from = (rel->r_offset | |
8415 | + sec->output_offset | |
8416 | + sec->output_section->vma); | |
8417 | if (to - from + limit < 2 * limit) | |
8418 | *tls_maskp &= ~PLT_KEEP; | |
8419 | } | |
8420 | } | |
8421 | if (elf_section_data (sec)->relocs != relstart) | |
8422 | free (relstart); | |
8423 | } | |
8424 | ||
8425 | if (local_syms != NULL | |
8426 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
8427 | { | |
8428 | if (!info->keep_memory) | |
8429 | free (local_syms); | |
8430 | else | |
8431 | symtab_hdr->contents = (unsigned char *) local_syms; | |
8432 | } | |
8433 | } | |
8434 | ||
8435 | return TRUE; | |
8436 | } | |
8437 | ||
e1918d23 | 8438 | /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */ |
411e1bfb | 8439 | |
e1918d23 | 8440 | asection * |
e7d1c40c | 8441 | ppc64_elf_tls_setup (struct bfd_link_info *info) |
411e1bfb | 8442 | { |
411e1bfb AM |
8443 | struct ppc_link_hash_table *htab; |
8444 | ||
411e1bfb | 8445 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
8446 | if (htab == NULL) |
8447 | return NULL; | |
8448 | ||
ee67d69a AM |
8449 | if (abiversion (info->output_bfd) == 1) |
8450 | htab->opd_abi = 1; | |
8451 | ||
e7d1c40c | 8452 | if (htab->params->no_multi_toc) |
33c0ec9d AM |
8453 | htab->do_multi_toc = 0; |
8454 | else if (!htab->do_multi_toc) | |
e7d1c40c | 8455 | htab->params->no_multi_toc = 1; |
33c0ec9d | 8456 | |
8b5f1ed8 AM |
8457 | /* Default to --no-plt-localentry, as this option can cause problems |
8458 | with symbol interposition. For example, glibc libpthread.so and | |
8459 | libc.so duplicate many pthread symbols, with a fallback | |
8460 | implementation in libc.so. In some cases the fallback does more | |
8461 | work than the pthread implementation. __pthread_condattr_destroy | |
8462 | is one such symbol: the libpthread.so implementation is | |
8463 | localentry:0 while the libc.so implementation is localentry:8. | |
8464 | An app that "cleverly" uses dlopen to only load necessary | |
8465 | libraries at runtime may omit loading libpthread.so when not | |
8466 | running multi-threaded, which then results in the libc.so | |
8467 | fallback symbols being used and ld.so complaining. Now there | |
8468 | are workarounds in ld (see non_zero_localentry) to detect the | |
8469 | pthread situation, but that may not be the only case where | |
8470 | --plt-localentry can cause trouble. */ | |
f378ab09 | 8471 | if (htab->params->plt_localentry0 < 0) |
8b5f1ed8 | 8472 | htab->params->plt_localentry0 = 0; |
d44c746a AM |
8473 | if (htab->params->plt_localentry0 |
8474 | && elf_link_hash_lookup (&htab->elf, "GLIBC_2.26", | |
8475 | FALSE, FALSE, FALSE) == NULL) | |
cf97bcb0 AM |
8476 | _bfd_error_handler |
8477 | (_("warning: --plt-localentry is especially dangerous without " | |
8478 | "ld.so support to detect ABI violations")); | |
f378ab09 | 8479 | |
3a71aa26 AM |
8480 | htab->tls_get_addr = ((struct ppc_link_hash_entry *) |
8481 | elf_link_hash_lookup (&htab->elf, ".__tls_get_addr", | |
8482 | FALSE, FALSE, TRUE)); | |
a7f2871e AM |
8483 | /* Move dynamic linking info to the function descriptor sym. */ |
8484 | if (htab->tls_get_addr != NULL) | |
8485 | func_desc_adjust (&htab->tls_get_addr->elf, info); | |
3a71aa26 AM |
8486 | htab->tls_get_addr_fd = ((struct ppc_link_hash_entry *) |
8487 | elf_link_hash_lookup (&htab->elf, "__tls_get_addr", | |
8488 | FALSE, FALSE, TRUE)); | |
7c9cf415 | 8489 | if (htab->params->tls_get_addr_opt) |
a7f2871e AM |
8490 | { |
8491 | struct elf_link_hash_entry *opt, *opt_fd, *tga, *tga_fd; | |
8492 | ||
8493 | opt = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr_opt", | |
8494 | FALSE, FALSE, TRUE); | |
8495 | if (opt != NULL) | |
8496 | func_desc_adjust (opt, info); | |
8497 | opt_fd = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt", | |
8498 | FALSE, FALSE, TRUE); | |
8499 | if (opt_fd != NULL | |
8500 | && (opt_fd->root.type == bfd_link_hash_defined | |
8501 | || opt_fd->root.type == bfd_link_hash_defweak)) | |
8502 | { | |
8503 | /* If glibc supports an optimized __tls_get_addr call stub, | |
8504 | signalled by the presence of __tls_get_addr_opt, and we'll | |
8505 | be calling __tls_get_addr via a plt call stub, then | |
8506 | make __tls_get_addr point to __tls_get_addr_opt. */ | |
8507 | tga_fd = &htab->tls_get_addr_fd->elf; | |
8508 | if (htab->elf.dynamic_sections_created | |
8509 | && tga_fd != NULL | |
8510 | && (tga_fd->type == STT_FUNC | |
8511 | || tga_fd->needs_plt) | |
8512 | && !(SYMBOL_CALLS_LOCAL (info, tga_fd) | |
21d68fcd | 8513 | || UNDEFWEAK_NO_DYNAMIC_RELOC (info, tga_fd))) |
a7f2871e AM |
8514 | { |
8515 | struct plt_entry *ent; | |
8516 | ||
8517 | for (ent = tga_fd->plt.plist; ent != NULL; ent = ent->next) | |
8518 | if (ent->plt.refcount > 0) | |
8519 | break; | |
8520 | if (ent != NULL) | |
8521 | { | |
8522 | tga_fd->root.type = bfd_link_hash_indirect; | |
8523 | tga_fd->root.u.i.link = &opt_fd->root; | |
8524 | ppc64_elf_copy_indirect_symbol (info, opt_fd, tga_fd); | |
b531344c | 8525 | opt_fd->mark = 1; |
a7f2871e AM |
8526 | if (opt_fd->dynindx != -1) |
8527 | { | |
8528 | /* Use __tls_get_addr_opt in dynamic relocations. */ | |
8529 | opt_fd->dynindx = -1; | |
8530 | _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr, | |
8531 | opt_fd->dynstr_index); | |
8532 | if (!bfd_elf_link_record_dynamic_symbol (info, opt_fd)) | |
854b41e7 | 8533 | return NULL; |
a7f2871e AM |
8534 | } |
8535 | htab->tls_get_addr_fd = (struct ppc_link_hash_entry *) opt_fd; | |
8536 | tga = &htab->tls_get_addr->elf; | |
8537 | if (opt != NULL && tga != NULL) | |
8538 | { | |
8539 | tga->root.type = bfd_link_hash_indirect; | |
8540 | tga->root.u.i.link = &opt->root; | |
8541 | ppc64_elf_copy_indirect_symbol (info, opt, tga); | |
b531344c | 8542 | opt->mark = 1; |
a7f2871e AM |
8543 | _bfd_elf_link_hash_hide_symbol (info, opt, |
8544 | tga->forced_local); | |
8545 | htab->tls_get_addr = (struct ppc_link_hash_entry *) opt; | |
8546 | } | |
8547 | htab->tls_get_addr_fd->oh = htab->tls_get_addr; | |
8548 | htab->tls_get_addr_fd->is_func_descriptor = 1; | |
8549 | if (htab->tls_get_addr != NULL) | |
8550 | { | |
8551 | htab->tls_get_addr->oh = htab->tls_get_addr_fd; | |
8552 | htab->tls_get_addr->is_func = 1; | |
8553 | } | |
8554 | } | |
8555 | } | |
8556 | } | |
7c9cf415 AM |
8557 | else if (htab->params->tls_get_addr_opt < 0) |
8558 | htab->params->tls_get_addr_opt = 0; | |
a7f2871e | 8559 | } |
33c0ec9d | 8560 | return _bfd_elf_tls_setup (info->output_bfd, info); |
3a71aa26 | 8561 | } |
8387904d | 8562 | |
3a71aa26 AM |
8563 | /* Return TRUE iff REL is a branch reloc with a global symbol matching |
8564 | HASH1 or HASH2. */ | |
8387904d | 8565 | |
3a71aa26 AM |
8566 | static bfd_boolean |
8567 | branch_reloc_hash_match (const bfd *ibfd, | |
8568 | const Elf_Internal_Rela *rel, | |
8569 | const struct ppc_link_hash_entry *hash1, | |
8570 | const struct ppc_link_hash_entry *hash2) | |
8571 | { | |
8572 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd); | |
8573 | enum elf_ppc64_reloc_type r_type = ELF64_R_TYPE (rel->r_info); | |
8574 | unsigned int r_symndx = ELF64_R_SYM (rel->r_info); | |
8575 | ||
e054468f | 8576 | if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type)) |
8387904d | 8577 | { |
3a71aa26 AM |
8578 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd); |
8579 | struct elf_link_hash_entry *h; | |
8387904d | 8580 | |
3a71aa26 | 8581 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; |
b31867b6 | 8582 | h = elf_follow_link (h); |
3a71aa26 AM |
8583 | if (h == &hash1->elf || h == &hash2->elf) |
8584 | return TRUE; | |
a48ebf4d | 8585 | } |
3a71aa26 | 8586 | return FALSE; |
951fd09b | 8587 | } |
411e1bfb | 8588 | |
951fd09b AM |
8589 | /* Run through all the TLS relocs looking for optimization |
8590 | opportunities. The linker has been hacked (see ppc64elf.em) to do | |
8591 | a preliminary section layout so that we know the TLS segment | |
8592 | offsets. We can't optimize earlier because some optimizations need | |
8593 | to know the tp offset, and we need to optimize before allocating | |
8594 | dynamic relocations. */ | |
8595 | ||
8596 | bfd_boolean | |
33c0ec9d | 8597 | ppc64_elf_tls_optimize (struct bfd_link_info *info) |
951fd09b AM |
8598 | { |
8599 | bfd *ibfd; | |
8600 | asection *sec; | |
8601 | struct ppc_link_hash_table *htab; | |
663a1470 | 8602 | unsigned char *toc_ref; |
102890f0 | 8603 | int pass; |
951fd09b | 8604 | |
3cbc1e5e | 8605 | if (!bfd_link_executable (info)) |
411e1bfb AM |
8606 | return TRUE; |
8607 | ||
951fd09b | 8608 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
8609 | if (htab == NULL) |
8610 | return FALSE; | |
8611 | ||
663a1470 AM |
8612 | /* Make two passes over the relocs. On the first pass, mark toc |
8613 | entries involved with tls relocs, and check that tls relocs | |
8614 | involved in setting up a tls_get_addr call are indeed followed by | |
8615 | such a call. If they are not, we can't do any tls optimization. | |
8616 | On the second pass twiddle tls_mask flags to notify | |
8617 | relocate_section that optimization can be done, and adjust got | |
8618 | and plt refcounts. */ | |
8619 | toc_ref = NULL; | |
8620 | for (pass = 0; pass < 2; ++pass) | |
c72f2fb2 | 8621 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
663a1470 AM |
8622 | { |
8623 | Elf_Internal_Sym *locsyms = NULL; | |
8624 | asection *toc = bfd_get_section_by_name (ibfd, ".toc"); | |
8625 | ||
102890f0 AM |
8626 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) |
8627 | if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section)) | |
8628 | { | |
8629 | Elf_Internal_Rela *relstart, *rel, *relend; | |
663a1470 | 8630 | bfd_boolean found_tls_get_addr_arg = 0; |
411e1bfb | 8631 | |
102890f0 AM |
8632 | /* Read the relocations. */ |
8633 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, | |
8634 | info->keep_memory); | |
8635 | if (relstart == NULL) | |
2915c55b JK |
8636 | { |
8637 | free (toc_ref); | |
8638 | return FALSE; | |
8639 | } | |
411e1bfb | 8640 | |
102890f0 AM |
8641 | relend = relstart + sec->reloc_count; |
8642 | for (rel = relstart; rel < relend; rel++) | |
8643 | { | |
8644 | enum elf_ppc64_reloc_type r_type; | |
8645 | unsigned long r_symndx; | |
8646 | struct elf_link_hash_entry *h; | |
8647 | Elf_Internal_Sym *sym; | |
8648 | asection *sym_sec; | |
f961d9dd AM |
8649 | unsigned char *tls_mask; |
8650 | unsigned char tls_set, tls_clear, tls_type = 0; | |
102890f0 AM |
8651 | bfd_vma value; |
8652 | bfd_boolean ok_tprel, is_local; | |
8653 | long toc_ref_index = 0; | |
8654 | int expecting_tls_get_addr = 0; | |
663a1470 | 8655 | bfd_boolean ret = FALSE; |
411e1bfb | 8656 | |
102890f0 AM |
8657 | r_symndx = ELF64_R_SYM (rel->r_info); |
8658 | if (!get_sym_h (&h, &sym, &sym_sec, &tls_mask, &locsyms, | |
8659 | r_symndx, ibfd)) | |
8660 | { | |
8661 | err_free_rel: | |
8662 | if (elf_section_data (sec)->relocs != relstart) | |
8663 | free (relstart); | |
8664 | if (toc_ref != NULL) | |
8665 | free (toc_ref); | |
8666 | if (locsyms != NULL | |
0ffa91dd | 8667 | && (elf_symtab_hdr (ibfd).contents |
102890f0 AM |
8668 | != (unsigned char *) locsyms)) |
8669 | free (locsyms); | |
663a1470 | 8670 | return ret; |
102890f0 | 8671 | } |
411e1bfb | 8672 | |
102890f0 AM |
8673 | if (h != NULL) |
8674 | { | |
766bc656 AM |
8675 | if (h->root.type == bfd_link_hash_defined |
8676 | || h->root.type == bfd_link_hash_defweak) | |
8677 | value = h->root.u.def.value; | |
8678 | else if (h->root.type == bfd_link_hash_undefweak) | |
8679 | value = 0; | |
8680 | else | |
663a1470 AM |
8681 | { |
8682 | found_tls_get_addr_arg = 0; | |
8683 | continue; | |
8684 | } | |
102890f0 AM |
8685 | } |
8686 | else | |
8687 | /* Symbols referenced by TLS relocs must be of type | |
8688 | STT_TLS. So no need for .opd local sym adjust. */ | |
8689 | value = sym->st_value; | |
8690 | ||
8691 | ok_tprel = FALSE; | |
8692 | is_local = FALSE; | |
8693 | if (h == NULL | |
8694 | || !h->def_dynamic) | |
8695 | { | |
8696 | is_local = TRUE; | |
766bc656 AM |
8697 | if (h != NULL |
8698 | && h->root.type == bfd_link_hash_undefweak) | |
8699 | ok_tprel = TRUE; | |
c27b8c2a AM |
8700 | else if (sym_sec != NULL |
8701 | && sym_sec->output_section != NULL) | |
766bc656 AM |
8702 | { |
8703 | value += sym_sec->output_offset; | |
8704 | value += sym_sec->output_section->vma; | |
8705 | value -= htab->elf.tls_sec->vma; | |
8706 | ok_tprel = (value + TP_OFFSET + ((bfd_vma) 1 << 31) | |
8707 | < (bfd_vma) 1 << 32); | |
8708 | } | |
102890f0 | 8709 | } |
951fd09b | 8710 | |
102890f0 | 8711 | r_type = ELF64_R_TYPE (rel->r_info); |
663a1470 AM |
8712 | /* If this section has old-style __tls_get_addr calls |
8713 | without marker relocs, then check that each | |
8714 | __tls_get_addr call reloc is preceded by a reloc | |
8715 | that conceivably belongs to the __tls_get_addr arg | |
8716 | setup insn. If we don't find matching arg setup | |
8717 | relocs, don't do any tls optimization. */ | |
8718 | if (pass == 0 | |
8719 | && sec->has_tls_get_addr_call | |
8720 | && h != NULL | |
8721 | && (h == &htab->tls_get_addr->elf | |
8722 | || h == &htab->tls_get_addr_fd->elf) | |
8723 | && !found_tls_get_addr_arg | |
8724 | && is_branch_reloc (r_type)) | |
8725 | { | |
25f53a85 | 8726 | info->callbacks->minfo (_("%H __tls_get_addr lost arg, " |
663a1470 AM |
8727 | "TLS optimization disabled\n"), |
8728 | ibfd, sec, rel->r_offset); | |
8729 | ret = TRUE; | |
8730 | goto err_free_rel; | |
8731 | } | |
8732 | ||
8733 | found_tls_get_addr_arg = 0; | |
102890f0 AM |
8734 | switch (r_type) |
8735 | { | |
8736 | case R_PPC64_GOT_TLSLD16: | |
8737 | case R_PPC64_GOT_TLSLD16_LO: | |
8738 | expecting_tls_get_addr = 1; | |
663a1470 | 8739 | found_tls_get_addr_arg = 1; |
1a0670f3 | 8740 | /* Fall through. */ |
102890f0 AM |
8741 | |
8742 | case R_PPC64_GOT_TLSLD16_HI: | |
8743 | case R_PPC64_GOT_TLSLD16_HA: | |
8744 | /* These relocs should never be against a symbol | |
8745 | defined in a shared lib. Leave them alone if | |
8746 | that turns out to be the case. */ | |
8747 | if (!is_local) | |
8748 | continue; | |
411e1bfb | 8749 | |
102890f0 | 8750 | /* LD -> LE */ |
411e1bfb | 8751 | tls_set = 0; |
102890f0 AM |
8752 | tls_clear = TLS_LD; |
8753 | tls_type = TLS_TLS | TLS_LD; | |
8754 | break; | |
411e1bfb | 8755 | |
102890f0 AM |
8756 | case R_PPC64_GOT_TLSGD16: |
8757 | case R_PPC64_GOT_TLSGD16_LO: | |
8758 | expecting_tls_get_addr = 1; | |
663a1470 | 8759 | found_tls_get_addr_arg = 1; |
1a0670f3 | 8760 | /* Fall through. */ |
102890f0 AM |
8761 | |
8762 | case R_PPC64_GOT_TLSGD16_HI: | |
8763 | case R_PPC64_GOT_TLSGD16_HA: | |
8764 | if (ok_tprel) | |
8765 | /* GD -> LE */ | |
411e1bfb | 8766 | tls_set = 0; |
102890f0 AM |
8767 | else |
8768 | /* GD -> IE */ | |
8769 | tls_set = TLS_TLS | TLS_TPRELGD; | |
8770 | tls_clear = TLS_GD; | |
8771 | tls_type = TLS_TLS | TLS_GD; | |
8772 | break; | |
8773 | ||
8774 | case R_PPC64_GOT_TPREL16_DS: | |
8775 | case R_PPC64_GOT_TPREL16_LO_DS: | |
8776 | case R_PPC64_GOT_TPREL16_HI: | |
8777 | case R_PPC64_GOT_TPREL16_HA: | |
8778 | if (ok_tprel) | |
8779 | { | |
8780 | /* IE -> LE */ | |
8781 | tls_set = 0; | |
8782 | tls_clear = TLS_TPREL; | |
8783 | tls_type = TLS_TLS | TLS_TPREL; | |
8784 | break; | |
8785 | } | |
411e1bfb AM |
8786 | continue; |
8787 | ||
727fc41e AM |
8788 | case R_PPC64_TLSGD: |
8789 | case R_PPC64_TLSLD: | |
23cedd1d AM |
8790 | if (rel + 1 < relend |
8791 | && is_plt_seq_reloc (ELF64_R_TYPE (rel[1].r_info))) | |
8792 | { | |
8793 | if (pass != 0 | |
8794 | && ELF64_R_TYPE (rel[1].r_info) != R_PPC64_PLTSEQ) | |
8795 | { | |
8796 | r_symndx = ELF64_R_SYM (rel[1].r_info); | |
8797 | if (!get_sym_h (&h, NULL, NULL, NULL, &locsyms, | |
8798 | r_symndx, ibfd)) | |
8799 | goto err_free_rel; | |
8800 | if (h != NULL) | |
8801 | { | |
8802 | struct plt_entry *ent = NULL; | |
8803 | ||
8804 | for (ent = h->plt.plist; | |
8805 | ent != NULL; | |
8806 | ent = ent->next) | |
8807 | if (ent->addend == rel[1].r_addend) | |
8808 | break; | |
8809 | ||
8810 | if (ent != NULL | |
8811 | && ent->plt.refcount > 0) | |
8812 | ent->plt.refcount -= 1; | |
8813 | } | |
8814 | } | |
8815 | continue; | |
8816 | } | |
663a1470 | 8817 | found_tls_get_addr_arg = 1; |
1a0670f3 | 8818 | /* Fall through. */ |
663a1470 AM |
8819 | |
8820 | case R_PPC64_TLS: | |
8821 | case R_PPC64_TOC16: | |
8822 | case R_PPC64_TOC16_LO: | |
102890f0 AM |
8823 | if (sym_sec == NULL || sym_sec != toc) |
8824 | continue; | |
8825 | ||
8826 | /* Mark this toc entry as referenced by a TLS | |
8827 | code sequence. We can do that now in the | |
8828 | case of R_PPC64_TLS, and after checking for | |
8829 | tls_get_addr for the TOC16 relocs. */ | |
8830 | if (toc_ref == NULL) | |
663a1470 AM |
8831 | toc_ref = bfd_zmalloc (toc->output_section->rawsize / 8); |
8832 | if (toc_ref == NULL) | |
8833 | goto err_free_rel; | |
8834 | ||
102890f0 AM |
8835 | if (h != NULL) |
8836 | value = h->root.u.def.value; | |
8837 | else | |
8838 | value = sym->st_value; | |
8839 | value += rel->r_addend; | |
73242275 AM |
8840 | if (value % 8 != 0) |
8841 | continue; | |
8842 | BFD_ASSERT (value < toc->size | |
8843 | && toc->output_offset % 8 == 0); | |
663a1470 | 8844 | toc_ref_index = (value + toc->output_offset) / 8; |
727fc41e AM |
8845 | if (r_type == R_PPC64_TLS |
8846 | || r_type == R_PPC64_TLSGD | |
8847 | || r_type == R_PPC64_TLSLD) | |
102890f0 AM |
8848 | { |
8849 | toc_ref[toc_ref_index] = 1; | |
8850 | continue; | |
8851 | } | |
8852 | ||
8853 | if (pass != 0 && toc_ref[toc_ref_index] == 0) | |
8854 | continue; | |
8855 | ||
8856 | tls_set = 0; | |
8857 | tls_clear = 0; | |
8858 | expecting_tls_get_addr = 2; | |
8859 | break; | |
8860 | ||
8861 | case R_PPC64_TPREL64: | |
8862 | if (pass == 0 | |
8863 | || sec != toc | |
8864 | || toc_ref == NULL | |
663a1470 | 8865 | || !toc_ref[(rel->r_offset + toc->output_offset) / 8]) |
102890f0 AM |
8866 | continue; |
8867 | if (ok_tprel) | |
8868 | { | |
8869 | /* IE -> LE */ | |
8870 | tls_set = TLS_EXPLICIT; | |
8871 | tls_clear = TLS_TPREL; | |
8872 | break; | |
8873 | } | |
8874 | continue; | |
8875 | ||
8876 | case R_PPC64_DTPMOD64: | |
8877 | if (pass == 0 | |
8878 | || sec != toc | |
8879 | || toc_ref == NULL | |
663a1470 | 8880 | || !toc_ref[(rel->r_offset + toc->output_offset) / 8]) |
102890f0 AM |
8881 | continue; |
8882 | if (rel + 1 < relend | |
8883 | && (rel[1].r_info | |
8884 | == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)) | |
8885 | && rel[1].r_offset == rel->r_offset + 8) | |
8886 | { | |
8887 | if (ok_tprel) | |
8888 | /* GD -> LE */ | |
8889 | tls_set = TLS_EXPLICIT | TLS_GD; | |
8890 | else | |
8891 | /* GD -> IE */ | |
8892 | tls_set = TLS_EXPLICIT | TLS_GD | TLS_TPRELGD; | |
8893 | tls_clear = TLS_GD; | |
8894 | } | |
8895 | else | |
8896 | { | |
8897 | if (!is_local) | |
8898 | continue; | |
8899 | ||
8900 | /* LD -> LE */ | |
8901 | tls_set = TLS_EXPLICIT; | |
8902 | tls_clear = TLS_LD; | |
8903 | } | |
8904 | break; | |
8905 | ||
8906 | default: | |
8907 | continue; | |
8908 | } | |
8909 | ||
8910 | if (pass == 0) | |
8911 | { | |
727fc41e AM |
8912 | if (!expecting_tls_get_addr |
8913 | || !sec->has_tls_get_addr_call) | |
102890f0 AM |
8914 | continue; |
8915 | ||
3a71aa26 AM |
8916 | if (rel + 1 < relend |
8917 | && branch_reloc_hash_match (ibfd, rel + 1, | |
8918 | htab->tls_get_addr, | |
8919 | htab->tls_get_addr_fd)) | |
102890f0 | 8920 | { |
3a71aa26 | 8921 | if (expecting_tls_get_addr == 2) |
102890f0 | 8922 | { |
3a71aa26 | 8923 | /* Check for toc tls entries. */ |
f961d9dd | 8924 | unsigned char *toc_tls; |
3a71aa26 AM |
8925 | int retval; |
8926 | ||
8927 | retval = get_tls_mask (&toc_tls, NULL, NULL, | |
8928 | &locsyms, | |
8929 | rel, ibfd); | |
8930 | if (retval == 0) | |
8931 | goto err_free_rel; | |
663a1470 AM |
8932 | if (toc_tls != NULL) |
8933 | { | |
37da22e5 AM |
8934 | if ((*toc_tls & TLS_TLS) != 0 |
8935 | && ((*toc_tls & (TLS_GD | TLS_LD)) != 0)) | |
663a1470 AM |
8936 | found_tls_get_addr_arg = 1; |
8937 | if (retval > 1) | |
8938 | toc_ref[toc_ref_index] = 1; | |
8939 | } | |
102890f0 | 8940 | } |
3a71aa26 | 8941 | continue; |
102890f0 AM |
8942 | } |
8943 | ||
102890f0 AM |
8944 | /* Uh oh, we didn't find the expected call. We |
8945 | could just mark this symbol to exclude it | |
8946 | from tls optimization but it's safer to skip | |
663a1470 | 8947 | the entire optimization. */ |
695344c0 | 8948 | /* xgettext:c-format */ |
25f53a85 | 8949 | info->callbacks->minfo (_("%H arg lost __tls_get_addr, " |
663a1470 AM |
8950 | "TLS optimization disabled\n"), |
8951 | ibfd, sec, rel->r_offset); | |
8952 | ret = TRUE; | |
8953 | goto err_free_rel; | |
102890f0 AM |
8954 | } |
8955 | ||
37da22e5 AM |
8956 | /* If we don't have old-style __tls_get_addr calls |
8957 | without TLSGD/TLSLD marker relocs, and we haven't | |
8958 | found a new-style __tls_get_addr call with a | |
8959 | marker for this symbol, then we either have a | |
8960 | broken object file or an -mlongcall style | |
8961 | indirect call to __tls_get_addr without a marker. | |
8962 | Disable optimization in this case. */ | |
8963 | if ((tls_clear & (TLS_GD | TLS_LD)) != 0 | |
8964 | && (tls_set & TLS_EXPLICIT) == 0 | |
8965 | && !sec->has_tls_get_addr_call | |
8966 | && ((*tls_mask & (TLS_TLS | TLS_MARK)) | |
8967 | != (TLS_TLS | TLS_MARK))) | |
8968 | continue; | |
8969 | ||
23cedd1d | 8970 | if (expecting_tls_get_addr) |
102890f0 | 8971 | { |
23cedd1d AM |
8972 | struct plt_entry *ent = NULL; |
8973 | ||
8974 | if (htab->tls_get_addr != NULL) | |
8975 | for (ent = htab->tls_get_addr->elf.plt.plist; | |
8976 | ent != NULL; | |
8977 | ent = ent->next) | |
8978 | if (ent->addend == 0) | |
102890f0 | 8979 | break; |
411e1bfb | 8980 | |
23cedd1d AM |
8981 | if (ent == NULL && htab->tls_get_addr_fd != NULL) |
8982 | for (ent = htab->tls_get_addr_fd->elf.plt.plist; | |
8983 | ent != NULL; | |
8984 | ent = ent->next) | |
8985 | if (ent->addend == 0) | |
102890f0 | 8986 | break; |
23cedd1d AM |
8987 | |
8988 | if (ent != NULL | |
8989 | && ent->plt.refcount > 0) | |
8990 | ent->plt.refcount -= 1; | |
102890f0 | 8991 | } |
411e1bfb | 8992 | |
102890f0 | 8993 | if (tls_clear == 0) |
30038c59 AM |
8994 | continue; |
8995 | ||
102890f0 AM |
8996 | if ((tls_set & TLS_EXPLICIT) == 0) |
8997 | { | |
8998 | struct got_entry *ent; | |
411e1bfb | 8999 | |
102890f0 AM |
9000 | /* Adjust got entry for this reloc. */ |
9001 | if (h != NULL) | |
9002 | ent = h->got.glist; | |
9003 | else | |
9004 | ent = elf_local_got_ents (ibfd)[r_symndx]; | |
411e1bfb | 9005 | |
102890f0 AM |
9006 | for (; ent != NULL; ent = ent->next) |
9007 | if (ent->addend == rel->r_addend | |
9008 | && ent->owner == ibfd | |
9009 | && ent->tls_type == tls_type) | |
9010 | break; | |
9011 | if (ent == NULL) | |
9012 | abort (); | |
411e1bfb | 9013 | |
102890f0 AM |
9014 | if (tls_set == 0) |
9015 | { | |
9016 | /* We managed to get rid of a got entry. */ | |
9017 | if (ent->got.refcount > 0) | |
9018 | ent->got.refcount -= 1; | |
9019 | } | |
9020 | } | |
9021 | else | |
9022 | { | |
9023 | /* If we got rid of a DTPMOD/DTPREL reloc pair then | |
9024 | we'll lose one or two dyn relocs. */ | |
9025 | if (!dec_dynrel_count (rel->r_info, sec, info, | |
19e08130 | 9026 | NULL, h, sym)) |
102890f0 | 9027 | return FALSE; |
411e1bfb | 9028 | |
102890f0 AM |
9029 | if (tls_set == (TLS_EXPLICIT | TLS_GD)) |
9030 | { | |
9031 | if (!dec_dynrel_count ((rel + 1)->r_info, sec, info, | |
19e08130 | 9032 | NULL, h, sym)) |
102890f0 AM |
9033 | return FALSE; |
9034 | } | |
9035 | } | |
411e1bfb | 9036 | |
102890f0 AM |
9037 | *tls_mask |= tls_set; |
9038 | *tls_mask &= ~tls_clear; | |
9039 | } | |
8c1d1bb8 | 9040 | |
102890f0 AM |
9041 | if (elf_section_data (sec)->relocs != relstart) |
9042 | free (relstart); | |
9043 | } | |
411e1bfb | 9044 | |
663a1470 AM |
9045 | if (locsyms != NULL |
9046 | && (elf_symtab_hdr (ibfd).contents != (unsigned char *) locsyms)) | |
9047 | { | |
9048 | if (!info->keep_memory) | |
9049 | free (locsyms); | |
9050 | else | |
9051 | elf_symtab_hdr (ibfd).contents = (unsigned char *) locsyms; | |
9052 | } | |
9053 | } | |
411e1bfb | 9054 | |
663a1470 AM |
9055 | if (toc_ref != NULL) |
9056 | free (toc_ref); | |
9a23f96e | 9057 | htab->do_tls_opt = 1; |
b34976b6 | 9058 | return TRUE; |
1e2f5b6e | 9059 | } |
b34976b6 | 9060 | |
c5614fa4 AM |
9061 | /* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust |
9062 | the values of any global symbols in a toc section that has been | |
9063 | edited. Globals in toc sections should be a rarity, so this function | |
9064 | sets a flag if any are found in toc sections other than the one just | |
de194d85 | 9065 | edited, so that further hash table traversals can be avoided. */ |
c5614fa4 AM |
9066 | |
9067 | struct adjust_toc_info | |
9068 | { | |
9069 | asection *toc; | |
9070 | unsigned long *skip; | |
9071 | bfd_boolean global_toc_syms; | |
9072 | }; | |
9073 | ||
ba761f19 AM |
9074 | enum toc_skip_enum { ref_from_discarded = 1, can_optimize = 2 }; |
9075 | ||
c5614fa4 AM |
9076 | static bfd_boolean |
9077 | adjust_toc_syms (struct elf_link_hash_entry *h, void *inf) | |
9078 | { | |
9079 | struct ppc_link_hash_entry *eh; | |
9080 | struct adjust_toc_info *toc_inf = (struct adjust_toc_info *) inf; | |
854b41e7 | 9081 | unsigned long i; |
c5614fa4 | 9082 | |
c5614fa4 AM |
9083 | if (h->root.type != bfd_link_hash_defined |
9084 | && h->root.type != bfd_link_hash_defweak) | |
9085 | return TRUE; | |
9086 | ||
9087 | eh = (struct ppc_link_hash_entry *) h; | |
9088 | if (eh->adjust_done) | |
9089 | return TRUE; | |
9090 | ||
9091 | if (eh->elf.root.u.def.section == toc_inf->toc) | |
9092 | { | |
854b41e7 AM |
9093 | if (eh->elf.root.u.def.value > toc_inf->toc->rawsize) |
9094 | i = toc_inf->toc->rawsize >> 3; | |
c5614fa4 | 9095 | else |
854b41e7 AM |
9096 | i = eh->elf.root.u.def.value >> 3; |
9097 | ||
ba761f19 | 9098 | if ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0) |
c5614fa4 | 9099 | { |
4eca0228 | 9100 | _bfd_error_handler |
854b41e7 AM |
9101 | (_("%s defined on removed toc entry"), eh->elf.root.root.string); |
9102 | do | |
9103 | ++i; | |
ba761f19 | 9104 | while ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0); |
854b41e7 | 9105 | eh->elf.root.u.def.value = (bfd_vma) i << 3; |
c5614fa4 | 9106 | } |
854b41e7 AM |
9107 | |
9108 | eh->elf.root.u.def.value -= toc_inf->skip[i]; | |
c5614fa4 AM |
9109 | eh->adjust_done = 1; |
9110 | } | |
9111 | else if (strcmp (eh->elf.root.u.def.section->name, ".toc") == 0) | |
9112 | toc_inf->global_toc_syms = TRUE; | |
9113 | ||
9114 | return TRUE; | |
9115 | } | |
9116 | ||
39eeab25 AM |
9117 | /* Return TRUE iff INSN with a relocation of R_TYPE is one we expect |
9118 | on a _LO variety toc/got reloc. */ | |
560c8763 AM |
9119 | |
9120 | static bfd_boolean | |
39eeab25 | 9121 | ok_lo_toc_insn (unsigned int insn, enum elf_ppc64_reloc_type r_type) |
560c8763 | 9122 | { |
39eeab25 AM |
9123 | return ((insn & (0x3f << 26)) == 12u << 26 /* addic */ |
9124 | || (insn & (0x3f << 26)) == 14u << 26 /* addi */ | |
560c8763 AM |
9125 | || (insn & (0x3f << 26)) == 32u << 26 /* lwz */ |
9126 | || (insn & (0x3f << 26)) == 34u << 26 /* lbz */ | |
9127 | || (insn & (0x3f << 26)) == 36u << 26 /* stw */ | |
9128 | || (insn & (0x3f << 26)) == 38u << 26 /* stb */ | |
9129 | || (insn & (0x3f << 26)) == 40u << 26 /* lhz */ | |
9130 | || (insn & (0x3f << 26)) == 42u << 26 /* lha */ | |
9131 | || (insn & (0x3f << 26)) == 44u << 26 /* sth */ | |
9132 | || (insn & (0x3f << 26)) == 46u << 26 /* lmw */ | |
9133 | || (insn & (0x3f << 26)) == 47u << 26 /* stmw */ | |
9134 | || (insn & (0x3f << 26)) == 48u << 26 /* lfs */ | |
9135 | || (insn & (0x3f << 26)) == 50u << 26 /* lfd */ | |
9136 | || (insn & (0x3f << 26)) == 52u << 26 /* stfs */ | |
9137 | || (insn & (0x3f << 26)) == 54u << 26 /* stfd */ | |
39eeab25 AM |
9138 | || (insn & (0x3f << 26)) == 56u << 26 /* lq,lfq */ |
9139 | || ((insn & (0x3f << 26)) == 57u << 26 /* lxsd,lxssp,lfdp */ | |
9140 | /* Exclude lfqu by testing reloc. If relocs are ever | |
9141 | defined for the reduced D field in psq_lu then those | |
9142 | will need testing too. */ | |
9143 | && r_type != R_PPC64_TOC16_LO && r_type != R_PPC64_GOT16_LO) | |
9144 | || ((insn & (0x3f << 26)) == 58u << 26 /* ld,lwa */ | |
9145 | && (insn & 1) == 0) | |
9146 | || (insn & (0x3f << 26)) == 60u << 26 /* stfq */ | |
9147 | || ((insn & (0x3f << 26)) == 61u << 26 /* lxv,stx{v,sd,ssp},stfdp */ | |
9148 | /* Exclude stfqu. psq_stu as above for psq_lu. */ | |
9149 | && r_type != R_PPC64_TOC16_LO && r_type != R_PPC64_GOT16_LO) | |
9150 | || ((insn & (0x3f << 26)) == 62u << 26 /* std,stq */ | |
9151 | && (insn & 1) == 0)); | |
560c8763 AM |
9152 | } |
9153 | ||
c5614fa4 AM |
9154 | /* Examine all relocs referencing .toc sections in order to remove |
9155 | unused .toc entries. */ | |
9156 | ||
9157 | bfd_boolean | |
33c0ec9d | 9158 | ppc64_elf_edit_toc (struct bfd_link_info *info) |
c5614fa4 AM |
9159 | { |
9160 | bfd *ibfd; | |
9161 | struct adjust_toc_info toc_inf; | |
67f0cbdb | 9162 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
c5614fa4 | 9163 | |
67f0cbdb | 9164 | htab->do_toc_opt = 1; |
c5614fa4 | 9165 | toc_inf.global_toc_syms = TRUE; |
c72f2fb2 | 9166 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
c5614fa4 AM |
9167 | { |
9168 | asection *toc, *sec; | |
9169 | Elf_Internal_Shdr *symtab_hdr; | |
9170 | Elf_Internal_Sym *local_syms; | |
425b145b | 9171 | Elf_Internal_Rela *relstart, *rel, *toc_relocs; |
c5614fa4 AM |
9172 | unsigned long *skip, *drop; |
9173 | unsigned char *used; | |
9174 | unsigned char *keep, last, some_unused; | |
9175 | ||
854b41e7 AM |
9176 | if (!is_ppc64_elf (ibfd)) |
9177 | continue; | |
9178 | ||
c5614fa4 AM |
9179 | toc = bfd_get_section_by_name (ibfd, ".toc"); |
9180 | if (toc == NULL | |
92b7a70f | 9181 | || toc->size == 0 |
dbaa2011 AM |
9182 | || toc->sec_info_type == SEC_INFO_TYPE_JUST_SYMS |
9183 | || discarded_section (toc)) | |
c5614fa4 AM |
9184 | continue; |
9185 | ||
425b145b | 9186 | toc_relocs = NULL; |
c5614fa4 | 9187 | local_syms = NULL; |
0ffa91dd | 9188 | symtab_hdr = &elf_symtab_hdr (ibfd); |
c5614fa4 AM |
9189 | |
9190 | /* Look at sections dropped from the final link. */ | |
9191 | skip = NULL; | |
9192 | relstart = NULL; | |
9193 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
9194 | { | |
9195 | if (sec->reloc_count == 0 | |
dbaa2011 | 9196 | || !discarded_section (sec) |
c5614fa4 AM |
9197 | || get_opd_info (sec) |
9198 | || (sec->flags & SEC_ALLOC) == 0 | |
9199 | || (sec->flags & SEC_DEBUGGING) != 0) | |
9200 | continue; | |
9201 | ||
9202 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, FALSE); | |
9203 | if (relstart == NULL) | |
9204 | goto error_ret; | |
9205 | ||
9206 | /* Run through the relocs to see which toc entries might be | |
9207 | unused. */ | |
9208 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
9209 | { | |
9210 | enum elf_ppc64_reloc_type r_type; | |
9211 | unsigned long r_symndx; | |
9212 | asection *sym_sec; | |
9213 | struct elf_link_hash_entry *h; | |
9214 | Elf_Internal_Sym *sym; | |
9215 | bfd_vma val; | |
9216 | ||
9217 | r_type = ELF64_R_TYPE (rel->r_info); | |
9218 | switch (r_type) | |
9219 | { | |
9220 | default: | |
9221 | continue; | |
9222 | ||
9223 | case R_PPC64_TOC16: | |
9224 | case R_PPC64_TOC16_LO: | |
9225 | case R_PPC64_TOC16_HI: | |
9226 | case R_PPC64_TOC16_HA: | |
9227 | case R_PPC64_TOC16_DS: | |
9228 | case R_PPC64_TOC16_LO_DS: | |
9229 | break; | |
9230 | } | |
9231 | ||
9232 | r_symndx = ELF64_R_SYM (rel->r_info); | |
9233 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
9234 | r_symndx, ibfd)) | |
9235 | goto error_ret; | |
9236 | ||
9237 | if (sym_sec != toc) | |
9238 | continue; | |
9239 | ||
9240 | if (h != NULL) | |
9241 | val = h->root.u.def.value; | |
9242 | else | |
9243 | val = sym->st_value; | |
9244 | val += rel->r_addend; | |
9245 | ||
9246 | if (val >= toc->size) | |
9247 | continue; | |
9248 | ||
9249 | /* Anything in the toc ought to be aligned to 8 bytes. | |
9250 | If not, don't mark as unused. */ | |
9251 | if (val & 7) | |
9252 | continue; | |
9253 | ||
9254 | if (skip == NULL) | |
9255 | { | |
854b41e7 | 9256 | skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8); |
c5614fa4 AM |
9257 | if (skip == NULL) |
9258 | goto error_ret; | |
9259 | } | |
9260 | ||
ba761f19 | 9261 | skip[val >> 3] = ref_from_discarded; |
c5614fa4 AM |
9262 | } |
9263 | ||
9264 | if (elf_section_data (sec)->relocs != relstart) | |
9265 | free (relstart); | |
9266 | } | |
9267 | ||
ba761f19 AM |
9268 | /* For largetoc loads of address constants, we can convert |
9269 | . addis rx,2,addr@got@ha | |
9270 | . ld ry,addr@got@l(rx) | |
9271 | to | |
9272 | . addis rx,2,addr@toc@ha | |
9273 | . addi ry,rx,addr@toc@l | |
9274 | when addr is within 2G of the toc pointer. This then means | |
9275 | that the word storing "addr" in the toc is no longer needed. */ | |
68ffbac6 | 9276 | |
ba761f19 AM |
9277 | if (!ppc64_elf_tdata (ibfd)->has_small_toc_reloc |
9278 | && toc->output_section->rawsize < (bfd_vma) 1 << 31 | |
9279 | && toc->reloc_count != 0) | |
9280 | { | |
9281 | /* Read toc relocs. */ | |
425b145b AM |
9282 | toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL, |
9283 | info->keep_memory); | |
9284 | if (toc_relocs == NULL) | |
ba761f19 AM |
9285 | goto error_ret; |
9286 | ||
425b145b | 9287 | for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel) |
ba761f19 AM |
9288 | { |
9289 | enum elf_ppc64_reloc_type r_type; | |
9290 | unsigned long r_symndx; | |
9291 | asection *sym_sec; | |
9292 | struct elf_link_hash_entry *h; | |
9293 | Elf_Internal_Sym *sym; | |
9294 | bfd_vma val, addr; | |
9295 | ||
9296 | r_type = ELF64_R_TYPE (rel->r_info); | |
9297 | if (r_type != R_PPC64_ADDR64) | |
9298 | continue; | |
9299 | ||
9300 | r_symndx = ELF64_R_SYM (rel->r_info); | |
9301 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
9302 | r_symndx, ibfd)) | |
9303 | goto error_ret; | |
9304 | ||
425b145b | 9305 | if (sym_sec == NULL |
c27b8c2a | 9306 | || sym_sec->output_section == NULL |
dbaa2011 | 9307 | || discarded_section (sym_sec)) |
425b145b AM |
9308 | continue; |
9309 | ||
afe397ea | 9310 | if (!SYMBOL_REFERENCES_LOCAL (info, h)) |
ba761f19 AM |
9311 | continue; |
9312 | ||
9313 | if (h != NULL) | |
bddc25c9 AM |
9314 | { |
9315 | if (h->type == STT_GNU_IFUNC) | |
9316 | continue; | |
9317 | val = h->root.u.def.value; | |
9318 | } | |
ba761f19 | 9319 | else |
bddc25c9 AM |
9320 | { |
9321 | if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
9322 | continue; | |
9323 | val = sym->st_value; | |
9324 | } | |
ba761f19 AM |
9325 | val += rel->r_addend; |
9326 | val += sym_sec->output_section->vma + sym_sec->output_offset; | |
9327 | ||
9328 | /* We don't yet know the exact toc pointer value, but we | |
9329 | know it will be somewhere in the toc section. Don't | |
9330 | optimize if the difference from any possible toc | |
9331 | pointer is outside [ff..f80008000, 7fff7fff]. */ | |
9332 | addr = toc->output_section->vma + TOC_BASE_OFF; | |
9333 | if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32) | |
9334 | continue; | |
9335 | ||
9336 | addr = toc->output_section->vma + toc->output_section->rawsize; | |
9337 | if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32) | |
9338 | continue; | |
9339 | ||
9340 | if (skip == NULL) | |
9341 | { | |
9342 | skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8); | |
9343 | if (skip == NULL) | |
9344 | goto error_ret; | |
9345 | } | |
9346 | ||
9347 | skip[rel->r_offset >> 3] | |
425b145b | 9348 | |= can_optimize | ((rel - toc_relocs) << 2); |
ba761f19 | 9349 | } |
ba761f19 AM |
9350 | } |
9351 | ||
c5614fa4 AM |
9352 | if (skip == NULL) |
9353 | continue; | |
9354 | ||
9355 | used = bfd_zmalloc (sizeof (*used) * (toc->size + 7) / 8); | |
9356 | if (used == NULL) | |
9357 | { | |
9358 | error_ret: | |
9359 | if (local_syms != NULL | |
9360 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
9361 | free (local_syms); | |
9362 | if (sec != NULL | |
9363 | && relstart != NULL | |
9364 | && elf_section_data (sec)->relocs != relstart) | |
9365 | free (relstart); | |
425b145b AM |
9366 | if (toc_relocs != NULL |
9367 | && elf_section_data (toc)->relocs != toc_relocs) | |
9368 | free (toc_relocs); | |
c5614fa4 AM |
9369 | if (skip != NULL) |
9370 | free (skip); | |
9371 | return FALSE; | |
9372 | } | |
9373 | ||
30038c59 AM |
9374 | /* Now check all kept sections that might reference the toc. |
9375 | Check the toc itself last. */ | |
9376 | for (sec = (ibfd->sections == toc && toc->next ? toc->next | |
9377 | : ibfd->sections); | |
c5614fa4 | 9378 | sec != NULL; |
c5614fa4 | 9379 | sec = (sec == toc ? NULL |
c5614fa4 | 9380 | : sec->next == NULL ? toc |
30038c59 | 9381 | : sec->next == toc && toc->next ? toc->next |
c5614fa4 AM |
9382 | : sec->next)) |
9383 | { | |
9384 | int repeat; | |
9385 | ||
9386 | if (sec->reloc_count == 0 | |
dbaa2011 | 9387 | || discarded_section (sec) |
c5614fa4 AM |
9388 | || get_opd_info (sec) |
9389 | || (sec->flags & SEC_ALLOC) == 0 | |
9390 | || (sec->flags & SEC_DEBUGGING) != 0) | |
9391 | continue; | |
9392 | ||
854b41e7 AM |
9393 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, |
9394 | info->keep_memory); | |
c5614fa4 | 9395 | if (relstart == NULL) |
2915c55b JK |
9396 | { |
9397 | free (used); | |
9398 | goto error_ret; | |
9399 | } | |
c5614fa4 AM |
9400 | |
9401 | /* Mark toc entries referenced as used. */ | |
c5614fa4 | 9402 | do |
d4f1ee75 AM |
9403 | { |
9404 | repeat = 0; | |
9405 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
9406 | { | |
9407 | enum elf_ppc64_reloc_type r_type; | |
9408 | unsigned long r_symndx; | |
9409 | asection *sym_sec; | |
9410 | struct elf_link_hash_entry *h; | |
9411 | Elf_Internal_Sym *sym; | |
9412 | bfd_vma val; | |
9413 | enum {no_check, check_lo, check_ha} insn_check; | |
98528052 | 9414 | |
d4f1ee75 AM |
9415 | r_type = ELF64_R_TYPE (rel->r_info); |
9416 | switch (r_type) | |
9417 | { | |
9418 | default: | |
9419 | insn_check = no_check; | |
9420 | break; | |
98528052 | 9421 | |
d4f1ee75 AM |
9422 | case R_PPC64_GOT_TLSLD16_HA: |
9423 | case R_PPC64_GOT_TLSGD16_HA: | |
9424 | case R_PPC64_GOT_TPREL16_HA: | |
9425 | case R_PPC64_GOT_DTPREL16_HA: | |
9426 | case R_PPC64_GOT16_HA: | |
9427 | case R_PPC64_TOC16_HA: | |
9428 | insn_check = check_ha; | |
9429 | break; | |
98528052 | 9430 | |
d4f1ee75 AM |
9431 | case R_PPC64_GOT_TLSLD16_LO: |
9432 | case R_PPC64_GOT_TLSGD16_LO: | |
9433 | case R_PPC64_GOT_TPREL16_LO_DS: | |
9434 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
9435 | case R_PPC64_GOT16_LO: | |
9436 | case R_PPC64_GOT16_LO_DS: | |
9437 | case R_PPC64_TOC16_LO: | |
9438 | case R_PPC64_TOC16_LO_DS: | |
9439 | insn_check = check_lo; | |
9440 | break; | |
9441 | } | |
560c8763 | 9442 | |
d4f1ee75 AM |
9443 | if (insn_check != no_check) |
9444 | { | |
9445 | bfd_vma off = rel->r_offset & ~3; | |
9446 | unsigned char buf[4]; | |
9447 | unsigned int insn; | |
c5614fa4 | 9448 | |
d4f1ee75 AM |
9449 | if (!bfd_get_section_contents (ibfd, sec, buf, off, 4)) |
9450 | { | |
9451 | free (used); | |
9452 | goto error_ret; | |
9453 | } | |
9454 | insn = bfd_get_32 (ibfd, buf); | |
9455 | if (insn_check == check_lo | |
39eeab25 | 9456 | ? !ok_lo_toc_insn (insn, r_type) |
d4f1ee75 AM |
9457 | : ((insn & ((0x3f << 26) | 0x1f << 16)) |
9458 | != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */)) | |
9459 | { | |
9460 | char str[12]; | |
9461 | ||
9462 | ppc64_elf_tdata (ibfd)->unexpected_toc_insn = 1; | |
9463 | sprintf (str, "%#08x", insn); | |
9464 | info->callbacks->einfo | |
695344c0 | 9465 | /* xgettext:c-format */ |
174d0a74 | 9466 | (_("%H: toc optimization is not supported for" |
cf97bcb0 | 9467 | " %s instruction\n"), |
d4f1ee75 AM |
9468 | ibfd, sec, rel->r_offset & ~3, str); |
9469 | } | |
9470 | } | |
c5614fa4 | 9471 | |
d4f1ee75 AM |
9472 | switch (r_type) |
9473 | { | |
9474 | case R_PPC64_TOC16: | |
9475 | case R_PPC64_TOC16_LO: | |
9476 | case R_PPC64_TOC16_HI: | |
9477 | case R_PPC64_TOC16_HA: | |
9478 | case R_PPC64_TOC16_DS: | |
9479 | case R_PPC64_TOC16_LO_DS: | |
9480 | /* In case we're taking addresses of toc entries. */ | |
9481 | case R_PPC64_ADDR64: | |
9482 | break; | |
c5614fa4 | 9483 | |
d4f1ee75 AM |
9484 | default: |
9485 | continue; | |
9486 | } | |
c5614fa4 | 9487 | |
d4f1ee75 AM |
9488 | r_symndx = ELF64_R_SYM (rel->r_info); |
9489 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
9490 | r_symndx, ibfd)) | |
9491 | { | |
9492 | free (used); | |
9493 | goto error_ret; | |
9494 | } | |
c5614fa4 | 9495 | |
d4f1ee75 AM |
9496 | if (sym_sec != toc) |
9497 | continue; | |
c5614fa4 | 9498 | |
d4f1ee75 AM |
9499 | if (h != NULL) |
9500 | val = h->root.u.def.value; | |
9501 | else | |
9502 | val = sym->st_value; | |
9503 | val += rel->r_addend; | |
ba761f19 | 9504 | |
d4f1ee75 AM |
9505 | if (val >= toc->size) |
9506 | continue; | |
ba761f19 | 9507 | |
d4f1ee75 AM |
9508 | if ((skip[val >> 3] & can_optimize) != 0) |
9509 | { | |
9510 | bfd_vma off; | |
9511 | unsigned char opc; | |
9512 | ||
9513 | switch (r_type) | |
9514 | { | |
9515 | case R_PPC64_TOC16_HA: | |
ba761f19 | 9516 | break; |
ba761f19 | 9517 | |
d4f1ee75 AM |
9518 | case R_PPC64_TOC16_LO_DS: |
9519 | off = rel->r_offset; | |
9520 | off += (bfd_big_endian (ibfd) ? -2 : 3); | |
9521 | if (!bfd_get_section_contents (ibfd, sec, &opc, | |
9522 | off, 1)) | |
9523 | { | |
9524 | free (used); | |
9525 | goto error_ret; | |
9526 | } | |
9527 | if ((opc & (0x3f << 2)) == (58u << 2)) | |
9528 | break; | |
1a0670f3 | 9529 | /* Fall through. */ |
ba761f19 | 9530 | |
d4f1ee75 AM |
9531 | default: |
9532 | /* Wrong sort of reloc, or not a ld. We may | |
9533 | as well clear ref_from_discarded too. */ | |
9534 | skip[val >> 3] = 0; | |
9535 | } | |
9536 | } | |
9537 | ||
9538 | if (sec != toc) | |
9539 | used[val >> 3] = 1; | |
9540 | /* For the toc section, we only mark as used if this | |
9541 | entry itself isn't unused. */ | |
9542 | else if ((used[rel->r_offset >> 3] | |
9543 | || !(skip[rel->r_offset >> 3] & ref_from_discarded)) | |
9544 | && !used[val >> 3]) | |
9545 | { | |
9546 | /* Do all the relocs again, to catch reference | |
9547 | chains. */ | |
9548 | repeat = 1; | |
9549 | used[val >> 3] = 1; | |
9550 | } | |
9551 | } | |
9552 | } | |
c5614fa4 | 9553 | while (repeat); |
854b41e7 AM |
9554 | |
9555 | if (elf_section_data (sec)->relocs != relstart) | |
9556 | free (relstart); | |
c5614fa4 AM |
9557 | } |
9558 | ||
9559 | /* Merge the used and skip arrays. Assume that TOC | |
9560 | doublewords not appearing as either used or unused belong | |
de194d85 | 9561 | to an entry more than one doubleword in size. */ |
c5614fa4 AM |
9562 | for (drop = skip, keep = used, last = 0, some_unused = 0; |
9563 | drop < skip + (toc->size + 7) / 8; | |
9564 | ++drop, ++keep) | |
9565 | { | |
9566 | if (*keep) | |
9567 | { | |
ba761f19 AM |
9568 | *drop &= ~ref_from_discarded; |
9569 | if ((*drop & can_optimize) != 0) | |
9570 | some_unused = 1; | |
c5614fa4 AM |
9571 | last = 0; |
9572 | } | |
b140b010 | 9573 | else if ((*drop & ref_from_discarded) != 0) |
c5614fa4 AM |
9574 | { |
9575 | some_unused = 1; | |
ba761f19 | 9576 | last = ref_from_discarded; |
c5614fa4 AM |
9577 | } |
9578 | else | |
9579 | *drop = last; | |
9580 | } | |
9581 | ||
9582 | free (used); | |
9583 | ||
9584 | if (some_unused) | |
9585 | { | |
9586 | bfd_byte *contents, *src; | |
9587 | unsigned long off; | |
d62b3684 | 9588 | Elf_Internal_Sym *sym; |
ba761f19 | 9589 | bfd_boolean local_toc_syms = FALSE; |
c5614fa4 AM |
9590 | |
9591 | /* Shuffle the toc contents, and at the same time convert the | |
9592 | skip array from booleans into offsets. */ | |
9593 | if (!bfd_malloc_and_get_section (ibfd, toc, &contents)) | |
9594 | goto error_ret; | |
9595 | ||
9596 | elf_section_data (toc)->this_hdr.contents = contents; | |
9597 | ||
9598 | for (src = contents, off = 0, drop = skip; | |
9599 | src < contents + toc->size; | |
9600 | src += 8, ++drop) | |
9601 | { | |
ba761f19 AM |
9602 | if ((*drop & (can_optimize | ref_from_discarded)) != 0) |
9603 | off += 8; | |
c5614fa4 AM |
9604 | else if (off != 0) |
9605 | { | |
9606 | *drop = off; | |
9607 | memcpy (src - off, src, 8); | |
9608 | } | |
9609 | } | |
854b41e7 | 9610 | *drop = off; |
c5614fa4 AM |
9611 | toc->rawsize = toc->size; |
9612 | toc->size = src - contents - off; | |
9613 | ||
ba761f19 AM |
9614 | /* Adjust addends for relocs against the toc section sym, |
9615 | and optimize any accesses we can. */ | |
c5614fa4 AM |
9616 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) |
9617 | { | |
9618 | if (sec->reloc_count == 0 | |
dbaa2011 | 9619 | || discarded_section (sec)) |
c5614fa4 AM |
9620 | continue; |
9621 | ||
9622 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, | |
854b41e7 | 9623 | info->keep_memory); |
c5614fa4 AM |
9624 | if (relstart == NULL) |
9625 | goto error_ret; | |
9626 | ||
9627 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
9628 | { | |
9629 | enum elf_ppc64_reloc_type r_type; | |
9630 | unsigned long r_symndx; | |
9631 | asection *sym_sec; | |
9632 | struct elf_link_hash_entry *h; | |
854b41e7 | 9633 | bfd_vma val; |
c5614fa4 AM |
9634 | |
9635 | r_type = ELF64_R_TYPE (rel->r_info); | |
9636 | switch (r_type) | |
9637 | { | |
9638 | default: | |
9639 | continue; | |
9640 | ||
9641 | case R_PPC64_TOC16: | |
9642 | case R_PPC64_TOC16_LO: | |
9643 | case R_PPC64_TOC16_HI: | |
9644 | case R_PPC64_TOC16_HA: | |
9645 | case R_PPC64_TOC16_DS: | |
9646 | case R_PPC64_TOC16_LO_DS: | |
9647 | case R_PPC64_ADDR64: | |
9648 | break; | |
9649 | } | |
9650 | ||
9651 | r_symndx = ELF64_R_SYM (rel->r_info); | |
9652 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
9653 | r_symndx, ibfd)) | |
9654 | goto error_ret; | |
9655 | ||
ba761f19 | 9656 | if (sym_sec != toc) |
c5614fa4 AM |
9657 | continue; |
9658 | ||
ba761f19 AM |
9659 | if (h != NULL) |
9660 | val = h->root.u.def.value; | |
9661 | else | |
9662 | { | |
9663 | val = sym->st_value; | |
9664 | if (val != 0) | |
9665 | local_toc_syms = TRUE; | |
9666 | } | |
9667 | ||
9668 | val += rel->r_addend; | |
854b41e7 AM |
9669 | |
9670 | if (val > toc->rawsize) | |
9671 | val = toc->rawsize; | |
ba761f19 AM |
9672 | else if ((skip[val >> 3] & ref_from_discarded) != 0) |
9673 | continue; | |
9674 | else if ((skip[val >> 3] & can_optimize) != 0) | |
9675 | { | |
9676 | Elf_Internal_Rela *tocrel | |
425b145b | 9677 | = toc_relocs + (skip[val >> 3] >> 2); |
ba761f19 AM |
9678 | unsigned long tsym = ELF64_R_SYM (tocrel->r_info); |
9679 | ||
9680 | switch (r_type) | |
9681 | { | |
9682 | case R_PPC64_TOC16_HA: | |
9683 | rel->r_info = ELF64_R_INFO (tsym, R_PPC64_TOC16_HA); | |
9684 | break; | |
9685 | ||
9686 | case R_PPC64_TOC16_LO_DS: | |
9687 | rel->r_info = ELF64_R_INFO (tsym, R_PPC64_LO_DS_OPT); | |
9688 | break; | |
9689 | ||
9690 | default: | |
28942f62 AM |
9691 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) |
9692 | ppc_howto_init (); | |
b140b010 | 9693 | info->callbacks->einfo |
695344c0 | 9694 | /* xgettext:c-format */ |
174d0a74 | 9695 | (_("%H: %s references " |
b140b010 AM |
9696 | "optimized away TOC entry\n"), |
9697 | ibfd, sec, rel->r_offset, | |
9698 | ppc64_elf_howto_table[r_type]->name); | |
9699 | bfd_set_error (bfd_error_bad_value); | |
9700 | goto error_ret; | |
ba761f19 AM |
9701 | } |
9702 | rel->r_addend = tocrel->r_addend; | |
9703 | elf_section_data (sec)->relocs = relstart; | |
9704 | continue; | |
9705 | } | |
9706 | ||
9707 | if (h != NULL || sym->st_value != 0) | |
9708 | continue; | |
854b41e7 AM |
9709 | |
9710 | rel->r_addend -= skip[val >> 3]; | |
9711 | elf_section_data (sec)->relocs = relstart; | |
c5614fa4 | 9712 | } |
854b41e7 AM |
9713 | |
9714 | if (elf_section_data (sec)->relocs != relstart) | |
9715 | free (relstart); | |
c5614fa4 AM |
9716 | } |
9717 | ||
9718 | /* We shouldn't have local or global symbols defined in the TOC, | |
9719 | but handle them anyway. */ | |
df22d223 AM |
9720 | if (local_syms != NULL) |
9721 | for (sym = local_syms; | |
9722 | sym < local_syms + symtab_hdr->sh_info; | |
9723 | ++sym) | |
9724 | if (sym->st_value != 0 | |
9725 | && bfd_section_from_elf_index (ibfd, sym->st_shndx) == toc) | |
9726 | { | |
9727 | unsigned long i; | |
854b41e7 | 9728 | |
df22d223 AM |
9729 | if (sym->st_value > toc->rawsize) |
9730 | i = toc->rawsize >> 3; | |
9731 | else | |
9732 | i = sym->st_value >> 3; | |
854b41e7 | 9733 | |
df22d223 AM |
9734 | if ((skip[i] & (ref_from_discarded | can_optimize)) != 0) |
9735 | { | |
9736 | if (local_toc_syms) | |
4eca0228 | 9737 | _bfd_error_handler |
df22d223 AM |
9738 | (_("%s defined on removed toc entry"), |
9739 | bfd_elf_sym_name (ibfd, symtab_hdr, sym, NULL)); | |
9740 | do | |
9741 | ++i; | |
9742 | while ((skip[i] & (ref_from_discarded | can_optimize))); | |
9743 | sym->st_value = (bfd_vma) i << 3; | |
9744 | } | |
d62b3684 | 9745 | |
df22d223 AM |
9746 | sym->st_value -= skip[i]; |
9747 | symtab_hdr->contents = (unsigned char *) local_syms; | |
9748 | } | |
c5614fa4 | 9749 | |
854b41e7 | 9750 | /* Adjust any global syms defined in this toc input section. */ |
c5614fa4 AM |
9751 | if (toc_inf.global_toc_syms) |
9752 | { | |
9753 | toc_inf.toc = toc; | |
9754 | toc_inf.skip = skip; | |
9755 | toc_inf.global_toc_syms = FALSE; | |
9756 | elf_link_hash_traverse (elf_hash_table (info), adjust_toc_syms, | |
9757 | &toc_inf); | |
9758 | } | |
854b41e7 AM |
9759 | |
9760 | if (toc->reloc_count != 0) | |
9761 | { | |
d4730f92 | 9762 | Elf_Internal_Shdr *rel_hdr; |
854b41e7 AM |
9763 | Elf_Internal_Rela *wrel; |
9764 | bfd_size_type sz; | |
9765 | ||
854b41e7 | 9766 | /* Remove unused toc relocs, and adjust those we keep. */ |
28be611c AM |
9767 | if (toc_relocs == NULL) |
9768 | toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL, | |
9769 | info->keep_memory); | |
9770 | if (toc_relocs == NULL) | |
9771 | goto error_ret; | |
9772 | ||
425b145b AM |
9773 | wrel = toc_relocs; |
9774 | for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel) | |
ba761f19 AM |
9775 | if ((skip[rel->r_offset >> 3] |
9776 | & (ref_from_discarded | can_optimize)) == 0) | |
854b41e7 AM |
9777 | { |
9778 | wrel->r_offset = rel->r_offset - skip[rel->r_offset >> 3]; | |
9779 | wrel->r_info = rel->r_info; | |
9780 | wrel->r_addend = rel->r_addend; | |
9781 | ++wrel; | |
9782 | } | |
9783 | else if (!dec_dynrel_count (rel->r_info, toc, info, | |
9784 | &local_syms, NULL, NULL)) | |
9785 | goto error_ret; | |
9786 | ||
425b145b AM |
9787 | elf_section_data (toc)->relocs = toc_relocs; |
9788 | toc->reloc_count = wrel - toc_relocs; | |
d4730f92 BS |
9789 | rel_hdr = _bfd_elf_single_rel_hdr (toc); |
9790 | sz = rel_hdr->sh_entsize; | |
9791 | rel_hdr->sh_size = toc->reloc_count * sz; | |
854b41e7 | 9792 | } |
c5614fa4 | 9793 | } |
28be611c AM |
9794 | else if (toc_relocs != NULL |
9795 | && elf_section_data (toc)->relocs != toc_relocs) | |
425b145b | 9796 | free (toc_relocs); |
c5614fa4 AM |
9797 | |
9798 | if (local_syms != NULL | |
9799 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
9800 | { | |
9801 | if (!info->keep_memory) | |
9802 | free (local_syms); | |
9803 | else | |
9804 | symtab_hdr->contents = (unsigned char *) local_syms; | |
9805 | } | |
9806 | free (skip); | |
9807 | } | |
9808 | ||
9809 | return TRUE; | |
9810 | } | |
9811 | ||
1bbe0902 AM |
9812 | /* Return true iff input section I references the TOC using |
9813 | instructions limited to +/-32k offsets. */ | |
9814 | ||
9815 | bfd_boolean | |
9816 | ppc64_elf_has_small_toc_reloc (asection *i) | |
9817 | { | |
9818 | return (is_ppc64_elf (i->owner) | |
9819 | && ppc64_elf_tdata (i->owner)->has_small_toc_reloc); | |
9820 | } | |
9821 | ||
927be08e AM |
9822 | /* Allocate space for one GOT entry. */ |
9823 | ||
9824 | static void | |
9825 | allocate_got (struct elf_link_hash_entry *h, | |
9826 | struct bfd_link_info *info, | |
9827 | struct got_entry *gent) | |
9828 | { | |
9829 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
927be08e AM |
9830 | struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h; |
9831 | int entsize = (gent->tls_type & eh->tls_mask & (TLS_GD | TLS_LD) | |
9832 | ? 16 : 8); | |
9833 | int rentsize = (gent->tls_type & eh->tls_mask & TLS_GD | |
9834 | ? 2 : 1) * sizeof (Elf64_External_Rela); | |
9835 | asection *got = ppc64_elf_tdata (gent->owner)->got; | |
9836 | ||
9837 | gent->got.offset = got->size; | |
9838 | got->size += entsize; | |
9839 | ||
19e08130 | 9840 | if (h->type == STT_GNU_IFUNC) |
927be08e | 9841 | { |
33e44f2e | 9842 | htab->elf.irelplt->size += rentsize; |
19e08130 | 9843 | htab->got_reli_size += rentsize; |
927be08e | 9844 | } |
f15d0b54 AM |
9845 | else if (((bfd_link_pic (info) |
9846 | && !((gent->tls_type & TLS_TPREL) != 0 | |
9847 | && bfd_link_executable (info) | |
9848 | && SYMBOL_REFERENCES_LOCAL (info, h))) | |
f0158f44 AM |
9849 | || (htab->elf.dynamic_sections_created |
9850 | && h->dynindx != -1 | |
9851 | && !SYMBOL_REFERENCES_LOCAL (info, h))) | |
21d68fcd | 9852 | && !UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)) |
927be08e | 9853 | { |
19e08130 | 9854 | asection *relgot = ppc64_elf_tdata (gent->owner)->relgot; |
927be08e | 9855 | relgot->size += rentsize; |
927be08e AM |
9856 | } |
9857 | } | |
9858 | ||
7865406b AM |
9859 | /* This function merges got entries in the same toc group. */ |
9860 | ||
9861 | static void | |
9862 | merge_got_entries (struct got_entry **pent) | |
9863 | { | |
9864 | struct got_entry *ent, *ent2; | |
9865 | ||
9866 | for (ent = *pent; ent != NULL; ent = ent->next) | |
9867 | if (!ent->is_indirect) | |
9868 | for (ent2 = ent->next; ent2 != NULL; ent2 = ent2->next) | |
9869 | if (!ent2->is_indirect | |
9870 | && ent2->addend == ent->addend | |
9871 | && ent2->tls_type == ent->tls_type | |
9872 | && elf_gp (ent2->owner) == elf_gp (ent->owner)) | |
9873 | { | |
9874 | ent2->is_indirect = TRUE; | |
9875 | ent2->got.ent = ent; | |
9876 | } | |
9877 | } | |
9878 | ||
46434633 | 9879 | /* If H is undefined, make it dynamic if that makes sense. */ |
f0158f44 AM |
9880 | |
9881 | static bfd_boolean | |
46434633 AM |
9882 | ensure_undef_dynamic (struct bfd_link_info *info, |
9883 | struct elf_link_hash_entry *h) | |
f0158f44 AM |
9884 | { |
9885 | struct elf_link_hash_table *htab = elf_hash_table (info); | |
9886 | ||
9887 | if (htab->dynamic_sections_created | |
46434633 AM |
9888 | && ((info->dynamic_undefined_weak != 0 |
9889 | && h->root.type == bfd_link_hash_undefweak) | |
9890 | || h->root.type == bfd_link_hash_undefined) | |
f0158f44 AM |
9891 | && h->dynindx == -1 |
9892 | && !h->forced_local | |
9893 | && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT) | |
9894 | return bfd_elf_link_record_dynamic_symbol (info, h); | |
9895 | return TRUE; | |
9896 | } | |
9897 | ||
65f38f15 AM |
9898 | /* Allocate space in .plt, .got and associated reloc sections for |
9899 | dynamic relocs. */ | |
5bd4f169 | 9900 | |
b34976b6 | 9901 | static bfd_boolean |
4ce794b7 | 9902 | allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf) |
5bd4f169 | 9903 | { |
65f38f15 AM |
9904 | struct bfd_link_info *info; |
9905 | struct ppc_link_hash_table *htab; | |
5bd4f169 | 9906 | asection *s; |
65f38f15 | 9907 | struct ppc_link_hash_entry *eh; |
0b8bcf0d | 9908 | struct got_entry **pgent, *gent; |
5bd4f169 | 9909 | |
e92d460e | 9910 | if (h->root.type == bfd_link_hash_indirect) |
b34976b6 | 9911 | return TRUE; |
5bd4f169 | 9912 | |
65f38f15 AM |
9913 | info = (struct bfd_link_info *) inf; |
9914 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
9915 | if (htab == NULL) |
9916 | return FALSE; | |
5bd4f169 | 9917 | |
951fd09b AM |
9918 | eh = (struct ppc_link_hash_entry *) h; |
9919 | /* Run through the TLS GD got entries first if we're changing them | |
9920 | to TPREL. */ | |
37da22e5 | 9921 | if ((eh->tls_mask & (TLS_TLS | TLS_TPRELGD)) == (TLS_TLS | TLS_TPRELGD)) |
951fd09b AM |
9922 | for (gent = h->got.glist; gent != NULL; gent = gent->next) |
9923 | if (gent->got.refcount > 0 | |
9924 | && (gent->tls_type & TLS_GD) != 0) | |
9925 | { | |
9926 | /* This was a GD entry that has been converted to TPREL. If | |
9927 | there happens to be a TPREL entry we can use that one. */ | |
9928 | struct got_entry *ent; | |
9929 | for (ent = h->got.glist; ent != NULL; ent = ent->next) | |
9930 | if (ent->got.refcount > 0 | |
9931 | && (ent->tls_type & TLS_TPREL) != 0 | |
e717da7e AM |
9932 | && ent->addend == gent->addend |
9933 | && ent->owner == gent->owner) | |
951fd09b AM |
9934 | { |
9935 | gent->got.refcount = 0; | |
9936 | break; | |
9937 | } | |
9938 | ||
9939 | /* If not, then we'll be using our own TPREL entry. */ | |
9940 | if (gent->got.refcount != 0) | |
9941 | gent->tls_type = TLS_TLS | TLS_TPREL; | |
9942 | } | |
9943 | ||
7865406b AM |
9944 | /* Remove any list entry that won't generate a word in the GOT before |
9945 | we call merge_got_entries. Otherwise we risk merging to empty | |
9946 | entries. */ | |
0b8bcf0d AM |
9947 | pgent = &h->got.glist; |
9948 | while ((gent = *pgent) != NULL) | |
411e1bfb | 9949 | if (gent->got.refcount > 0) |
7865406b AM |
9950 | { |
9951 | if ((gent->tls_type & TLS_LD) != 0 | |
9952 | && !h->def_dynamic) | |
9953 | { | |
9954 | ppc64_tlsld_got (gent->owner)->got.refcount += 1; | |
9955 | *pgent = gent->next; | |
9956 | } | |
9957 | else | |
9958 | pgent = &gent->next; | |
9959 | } | |
9960 | else | |
9961 | *pgent = gent->next; | |
9962 | ||
9963 | if (!htab->do_multi_toc) | |
9964 | merge_got_entries (&h->got.glist); | |
9965 | ||
9966 | for (gent = h->got.glist; gent != NULL; gent = gent->next) | |
9967 | if (!gent->is_indirect) | |
411e1bfb | 9968 | { |
46434633 AM |
9969 | /* Make sure this symbol is output as a dynamic symbol. */ |
9970 | if (!ensure_undef_dynamic (info, h)) | |
f0158f44 | 9971 | return FALSE; |
65f38f15 | 9972 | |
0c8d6e5c | 9973 | if (!is_ppc64_elf (gent->owner)) |
927be08e | 9974 | abort (); |
0ffa91dd | 9975 | |
927be08e | 9976 | allocate_got (h, info, gent); |
411e1bfb | 9977 | } |
65f38f15 | 9978 | |
954b63d4 AM |
9979 | /* If no dynamic sections we can't have dynamic relocs, except for |
9980 | IFUNCs which are handled even in static executables. */ | |
8a2058b5 AM |
9981 | if (!htab->elf.dynamic_sections_created |
9982 | && h->type != STT_GNU_IFUNC) | |
9983 | eh->dyn_relocs = NULL; | |
9984 | ||
529fe20e AM |
9985 | /* Discard relocs on undefined symbols that must be local. */ |
9986 | else if (h->root.type == bfd_link_hash_undefined | |
9987 | && ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) | |
9988 | eh->dyn_relocs = NULL; | |
9989 | ||
954b63d4 AM |
9990 | /* Also discard relocs on undefined weak syms with non-default |
9991 | visibility, or when dynamic_undefined_weak says so. */ | |
21d68fcd | 9992 | else if (UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)) |
954b63d4 AM |
9993 | eh->dyn_relocs = NULL; |
9994 | ||
8a2058b5 | 9995 | if (eh->dyn_relocs != NULL) |
65f38f15 | 9996 | { |
8a2058b5 AM |
9997 | struct elf_dyn_relocs *p, **pp; |
9998 | ||
57e7d118 AM |
9999 | /* In the shared -Bsymbolic case, discard space allocated for |
10000 | dynamic pc-relative relocs against symbols which turn out to | |
10001 | be defined in regular objects. For the normal shared case, | |
10002 | discard space for relocs that have become local due to symbol | |
10003 | visibility changes. */ | |
10004 | ||
10005 | if (bfd_link_pic (info)) | |
65f38f15 | 10006 | { |
57e7d118 AM |
10007 | /* Relocs that use pc_count are those that appear on a call |
10008 | insn, or certain REL relocs (see must_be_dyn_reloc) that | |
10009 | can be generated via assembly. We want calls to | |
10010 | protected symbols to resolve directly to the function | |
10011 | rather than going via the plt. If people want function | |
10012 | pointer comparisons to work as expected then they should | |
10013 | avoid writing weird assembly. */ | |
10014 | if (SYMBOL_CALLS_LOCAL (info, h)) | |
10015 | { | |
57e7d118 AM |
10016 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) |
10017 | { | |
10018 | p->count -= p->pc_count; | |
10019 | p->pc_count = 0; | |
10020 | if (p->count == 0) | |
10021 | *pp = p->next; | |
10022 | else | |
10023 | pp = &p->next; | |
10024 | } | |
10025 | } | |
65f38f15 | 10026 | |
954b63d4 | 10027 | if (eh->dyn_relocs != NULL) |
5bd4f169 | 10028 | { |
46434633 AM |
10029 | /* Make sure this symbol is output as a dynamic symbol. */ |
10030 | if (!ensure_undef_dynamic (info, h)) | |
f0158f44 | 10031 | return FALSE; |
5bd4f169 | 10032 | } |
65f38f15 | 10033 | } |
529fe20e | 10034 | else if (ELIMINATE_COPY_RELOCS && h->type != STT_GNU_IFUNC) |
57e7d118 | 10035 | { |
8a2058b5 | 10036 | /* For the non-pic case, discard space for relocs against |
57e7d118 AM |
10037 | symbols which turn out to need copy relocs or are not |
10038 | dynamic. */ | |
529fe20e AM |
10039 | if (h->dynamic_adjusted |
10040 | && !h->def_regular | |
10041 | && !ELF_COMMON_DEF_P (h)) | |
f0158f44 | 10042 | { |
46434633 AM |
10043 | /* Make sure this symbol is output as a dynamic symbol. */ |
10044 | if (!ensure_undef_dynamic (info, h)) | |
f0158f44 | 10045 | return FALSE; |
dfbb6ac9 | 10046 | |
f0158f44 AM |
10047 | if (h->dynindx == -1) |
10048 | eh->dyn_relocs = NULL; | |
10049 | } | |
10050 | else | |
8a2058b5 | 10051 | eh->dyn_relocs = NULL; |
57e7d118 AM |
10052 | } |
10053 | ||
10054 | /* Finally, allocate space. */ | |
10055 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
10056 | { | |
10057 | asection *sreloc = elf_section_data (p->sec)->sreloc; | |
10058 | if (eh->elf.type == STT_GNU_IFUNC) | |
10059 | sreloc = htab->elf.irelplt; | |
10060 | sreloc->size += p->count * sizeof (Elf64_External_Rela); | |
dfbb6ac9 | 10061 | } |
65f38f15 | 10062 | } |
57e7d118 | 10063 | |
2d7ad24e AM |
10064 | /* We might need a PLT entry when the symbol |
10065 | a) is dynamic, or | |
10066 | b) is an ifunc, or | |
10067 | c) has plt16 relocs and has been processed by adjust_dynamic_symbol, or | |
10068 | d) has plt16 relocs and we are linking statically. */ | |
10069 | if ((htab->elf.dynamic_sections_created && h->dynindx != -1) | |
10070 | || h->type == STT_GNU_IFUNC | |
10071 | || (h->needs_plt && h->dynamic_adjusted) | |
10072 | || (h->needs_plt | |
10073 | && h->def_regular | |
10074 | && !htab->elf.dynamic_sections_created | |
3e04d765 | 10075 | && !htab->can_convert_all_inline_plt |
2d7ad24e AM |
10076 | && (((struct ppc_link_hash_entry *) h)->tls_mask |
10077 | & (TLS_TLS | PLT_KEEP)) == PLT_KEEP)) | |
65f38f15 | 10078 | { |
57e7d118 AM |
10079 | struct plt_entry *pent; |
10080 | bfd_boolean doneone = FALSE; | |
10081 | for (pent = h->plt.plist; pent != NULL; pent = pent->next) | |
10082 | if (pent->plt.refcount > 0) | |
10083 | { | |
10084 | if (!htab->elf.dynamic_sections_created | |
10085 | || h->dynindx == -1) | |
10086 | { | |
2d7ad24e AM |
10087 | if (h->type == STT_GNU_IFUNC) |
10088 | { | |
10089 | s = htab->elf.iplt; | |
10090 | pent->plt.offset = s->size; | |
10091 | s->size += PLT_ENTRY_SIZE (htab); | |
10092 | s = htab->elf.irelplt; | |
10093 | } | |
10094 | else | |
10095 | { | |
10096 | s = htab->pltlocal; | |
10097 | pent->plt.offset = s->size; | |
10098 | s->size += LOCAL_PLT_ENTRY_SIZE (htab); | |
10099 | s = bfd_link_pic (info) ? htab->relpltlocal : NULL; | |
10100 | } | |
57e7d118 AM |
10101 | } |
10102 | else | |
10103 | { | |
10104 | /* If this is the first .plt entry, make room for the special | |
10105 | first entry. */ | |
10106 | s = htab->elf.splt; | |
10107 | if (s->size == 0) | |
10108 | s->size += PLT_INITIAL_ENTRY_SIZE (htab); | |
65f38f15 | 10109 | |
57e7d118 | 10110 | pent->plt.offset = s->size; |
65f38f15 | 10111 | |
57e7d118 AM |
10112 | /* Make room for this entry. */ |
10113 | s->size += PLT_ENTRY_SIZE (htab); | |
65f38f15 | 10114 | |
57e7d118 AM |
10115 | /* Make room for the .glink code. */ |
10116 | s = htab->glink; | |
10117 | if (s->size == 0) | |
9e390558 | 10118 | s->size += GLINK_PLTRESOLVE_SIZE (htab); |
57e7d118 AM |
10119 | if (htab->opd_abi) |
10120 | { | |
10121 | /* We need bigger stubs past index 32767. */ | |
9e390558 | 10122 | if (s->size >= GLINK_PLTRESOLVE_SIZE (htab) + 32768*2*4) |
57e7d118 AM |
10123 | s->size += 4; |
10124 | s->size += 2*4; | |
10125 | } | |
10126 | else | |
10127 | s->size += 4; | |
65f38f15 | 10128 | |
57e7d118 AM |
10129 | /* We also need to make an entry in the .rela.plt section. */ |
10130 | s = htab->elf.srelplt; | |
10131 | } | |
2d7ad24e AM |
10132 | if (s != NULL) |
10133 | s->size += sizeof (Elf64_External_Rela); | |
57e7d118 AM |
10134 | doneone = TRUE; |
10135 | } | |
10136 | else | |
10137 | pent->plt.offset = (bfd_vma) -1; | |
10138 | if (!doneone) | |
10139 | { | |
10140 | h->plt.plist = NULL; | |
10141 | h->needs_plt = 0; | |
10142 | } | |
65f38f15 | 10143 | } |
57e7d118 | 10144 | else |
65f38f15 | 10145 | { |
57e7d118 AM |
10146 | h->plt.plist = NULL; |
10147 | h->needs_plt = 0; | |
65f38f15 AM |
10148 | } |
10149 | ||
b34976b6 | 10150 | return TRUE; |
65f38f15 AM |
10151 | } |
10152 | ||
9e390558 AM |
10153 | #define PPC_LO(v) ((v) & 0xffff) |
10154 | #define PPC_HI(v) (((v) >> 16) & 0xffff) | |
10155 | #define PPC_HA(v) PPC_HI ((v) + 0x8000) | |
10156 | ||
a345bc8d AM |
10157 | /* Called via elf_link_hash_traverse from ppc64_elf_size_dynamic_sections |
10158 | to set up space for global entry stubs. These are put in glink, | |
10159 | after the branch table. */ | |
65f38f15 | 10160 | |
b34976b6 | 10161 | static bfd_boolean |
a345bc8d | 10162 | size_global_entry_stubs (struct elf_link_hash_entry *h, void *inf) |
65f38f15 | 10163 | { |
a345bc8d AM |
10164 | struct bfd_link_info *info; |
10165 | struct ppc_link_hash_table *htab; | |
10166 | struct plt_entry *pent; | |
9e390558 | 10167 | asection *s, *plt; |
65f38f15 | 10168 | |
a345bc8d AM |
10169 | if (h->root.type == bfd_link_hash_indirect) |
10170 | return TRUE; | |
65f38f15 | 10171 | |
a345bc8d AM |
10172 | if (!h->pointer_equality_needed) |
10173 | return TRUE; | |
65f38f15 | 10174 | |
a345bc8d AM |
10175 | if (h->def_regular) |
10176 | return TRUE; | |
65f38f15 | 10177 | |
a345bc8d AM |
10178 | info = inf; |
10179 | htab = ppc_hash_table (info); | |
10180 | if (htab == NULL) | |
10181 | return FALSE; | |
10182 | ||
9e390558 AM |
10183 | s = htab->global_entry; |
10184 | plt = htab->elf.splt; | |
a345bc8d AM |
10185 | for (pent = h->plt.plist; pent != NULL; pent = pent->next) |
10186 | if (pent->plt.offset != (bfd_vma) -1 | |
10187 | && pent->addend == 0) | |
10188 | { | |
afe397ea AM |
10189 | /* For ELFv2, if this symbol is not defined in a regular file |
10190 | and we are not generating a shared library or pie, then we | |
10191 | need to define the symbol in the executable on a call stub. | |
10192 | This is to avoid text relocations. */ | |
9e390558 AM |
10193 | bfd_vma off, stub_align, stub_off, stub_size; |
10194 | unsigned int align_power; | |
10195 | ||
10196 | stub_size = 16; | |
10197 | stub_off = s->size; | |
10198 | if (htab->params->plt_stub_align >= 0) | |
10199 | align_power = htab->params->plt_stub_align; | |
10200 | else | |
10201 | align_power = -htab->params->plt_stub_align; | |
10202 | /* Setting section alignment is delayed until we know it is | |
10203 | non-empty. Otherwise the .text output section will be | |
10204 | aligned at least to plt_stub_align even when no global | |
10205 | entry stubs are needed. */ | |
10206 | if (s->alignment_power < align_power) | |
10207 | s->alignment_power = align_power; | |
10208 | stub_align = (bfd_vma) 1 << align_power; | |
10209 | if (htab->params->plt_stub_align >= 0 | |
10210 | || ((((stub_off + stub_size - 1) & -stub_align) | |
10211 | - (stub_off & -stub_align)) | |
10212 | > ((stub_size - 1) & -stub_align))) | |
10213 | stub_off = (stub_off + stub_align - 1) & -stub_align; | |
10214 | off = pent->plt.offset + plt->output_offset + plt->output_section->vma; | |
10215 | off -= stub_off + s->output_offset + s->output_section->vma; | |
10216 | /* Note that for --plt-stub-align negative we have a possible | |
10217 | dependency between stub offset and size. Break that | |
10218 | dependency by assuming the max stub size when calculating | |
10219 | the stub offset. */ | |
10220 | if (PPC_HA (off) == 0) | |
10221 | stub_size -= 4; | |
8a2058b5 | 10222 | h->root.type = bfd_link_hash_defined; |
afe397ea | 10223 | h->root.u.def.section = s; |
9e390558 AM |
10224 | h->root.u.def.value = stub_off; |
10225 | s->size = stub_off + stub_size; | |
a345bc8d AM |
10226 | break; |
10227 | } | |
10228 | return TRUE; | |
10229 | } | |
10230 | ||
10231 | /* Set DF_TEXTREL if we find any dynamic relocs that apply to | |
10232 | read-only sections. */ | |
10233 | ||
10234 | static bfd_boolean | |
98bbb1b8 | 10235 | maybe_set_textrel (struct elf_link_hash_entry *h, void *inf) |
a345bc8d | 10236 | { |
98bbb1b8 AM |
10237 | asection *sec; |
10238 | ||
a345bc8d AM |
10239 | if (h->root.type == bfd_link_hash_indirect) |
10240 | return TRUE; | |
10241 | ||
98bbb1b8 AM |
10242 | sec = readonly_dynrelocs (h); |
10243 | if (sec != NULL) | |
a345bc8d | 10244 | { |
98bbb1b8 AM |
10245 | struct bfd_link_info *info = (struct bfd_link_info *) inf; |
10246 | ||
10247 | info->flags |= DF_TEXTREL; | |
10248 | info->callbacks->minfo | |
c1c8c1ef | 10249 | (_("%pB: dynamic relocation against `%pT' in read-only section `%pA'\n"), |
63c1f59d | 10250 | sec->owner, h->root.root.string, sec); |
a345bc8d AM |
10251 | |
10252 | /* Not an error, just cut short the traversal. */ | |
10253 | return FALSE; | |
65f38f15 | 10254 | } |
b34976b6 | 10255 | return TRUE; |
65f38f15 AM |
10256 | } |
10257 | ||
10258 | /* Set the sizes of the dynamic sections. */ | |
10259 | ||
b34976b6 | 10260 | static bfd_boolean |
ee67d69a | 10261 | ppc64_elf_size_dynamic_sections (bfd *output_bfd, |
4ce794b7 | 10262 | struct bfd_link_info *info) |
65f38f15 AM |
10263 | { |
10264 | struct ppc_link_hash_table *htab; | |
10265 | bfd *dynobj; | |
10266 | asection *s; | |
b34976b6 | 10267 | bfd_boolean relocs; |
65f38f15 | 10268 | bfd *ibfd; |
7865406b | 10269 | struct got_entry *first_tlsld; |
65f38f15 AM |
10270 | |
10271 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
10272 | if (htab == NULL) |
10273 | return FALSE; | |
10274 | ||
65f38f15 AM |
10275 | dynobj = htab->elf.dynobj; |
10276 | if (dynobj == NULL) | |
10277 | abort (); | |
10278 | ||
10279 | if (htab->elf.dynamic_sections_created) | |
10280 | { | |
10281 | /* Set the contents of the .interp section to the interpreter. */ | |
9b8b325a | 10282 | if (bfd_link_executable (info) && !info->nointerp) |
65f38f15 | 10283 | { |
3d4d4302 | 10284 | s = bfd_get_linker_section (dynobj, ".interp"); |
65f38f15 AM |
10285 | if (s == NULL) |
10286 | abort (); | |
eea6121a | 10287 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; |
65f38f15 AM |
10288 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; |
10289 | } | |
10290 | } | |
10291 | ||
10292 | /* Set up .got offsets for local syms, and space for local dynamic | |
10293 | relocs. */ | |
c72f2fb2 | 10294 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
65f38f15 | 10295 | { |
411e1bfb AM |
10296 | struct got_entry **lgot_ents; |
10297 | struct got_entry **end_lgot_ents; | |
e054468f AM |
10298 | struct plt_entry **local_plt; |
10299 | struct plt_entry **end_local_plt; | |
f961d9dd | 10300 | unsigned char *lgot_masks; |
65f38f15 AM |
10301 | bfd_size_type locsymcount; |
10302 | Elf_Internal_Shdr *symtab_hdr; | |
65f38f15 | 10303 | |
0c8d6e5c | 10304 | if (!is_ppc64_elf (ibfd)) |
65f38f15 AM |
10305 | continue; |
10306 | ||
10307 | for (s = ibfd->sections; s != NULL; s = s->next) | |
10308 | { | |
19e08130 | 10309 | struct ppc_dyn_relocs *p; |
65f38f15 | 10310 | |
6edfbbad | 10311 | for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next) |
65f38f15 | 10312 | { |
ec338859 AM |
10313 | if (!bfd_is_abs_section (p->sec) |
10314 | && bfd_is_abs_section (p->sec->output_section)) | |
10315 | { | |
10316 | /* Input section has been discarded, either because | |
10317 | it is a copy of a linkonce section or due to | |
10318 | linker script /DISCARD/, so we'll be discarding | |
10319 | the relocs too. */ | |
10320 | } | |
248866a8 | 10321 | else if (p->count != 0) |
ec338859 | 10322 | { |
19e08130 AM |
10323 | asection *srel = elf_section_data (p->sec)->sreloc; |
10324 | if (p->ifunc) | |
33e44f2e | 10325 | srel = htab->elf.irelplt; |
eea6121a | 10326 | srel->size += p->count * sizeof (Elf64_External_Rela); |
248866a8 AM |
10327 | if ((p->sec->output_section->flags & SEC_READONLY) != 0) |
10328 | info->flags |= DF_TEXTREL; | |
ec338859 | 10329 | } |
65f38f15 AM |
10330 | } |
10331 | } | |
10332 | ||
411e1bfb AM |
10333 | lgot_ents = elf_local_got_ents (ibfd); |
10334 | if (!lgot_ents) | |
65f38f15 AM |
10335 | continue; |
10336 | ||
0ffa91dd | 10337 | symtab_hdr = &elf_symtab_hdr (ibfd); |
65f38f15 | 10338 | locsymcount = symtab_hdr->sh_info; |
411e1bfb | 10339 | end_lgot_ents = lgot_ents + locsymcount; |
e054468f AM |
10340 | local_plt = (struct plt_entry **) end_lgot_ents; |
10341 | end_local_plt = local_plt + locsymcount; | |
f961d9dd | 10342 | lgot_masks = (unsigned char *) end_local_plt; |
e717da7e | 10343 | s = ppc64_elf_tdata (ibfd)->got; |
e7b938ca | 10344 | for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks) |
65f38f15 | 10345 | { |
0b8bcf0d | 10346 | struct got_entry **pent, *ent; |
411e1bfb | 10347 | |
0b8bcf0d AM |
10348 | pent = lgot_ents; |
10349 | while ((ent = *pent) != NULL) | |
411e1bfb AM |
10350 | if (ent->got.refcount > 0) |
10351 | { | |
e7b938ca | 10352 | if ((ent->tls_type & *lgot_masks & TLS_LD) != 0) |
411e1bfb | 10353 | { |
927be08e | 10354 | ppc64_tlsld_got (ibfd)->got.refcount += 1; |
0b8bcf0d | 10355 | *pent = ent->next; |
411e1bfb AM |
10356 | } |
10357 | else | |
10358 | { | |
19e08130 AM |
10359 | unsigned int ent_size = 8; |
10360 | unsigned int rel_size = sizeof (Elf64_External_Rela); | |
10361 | ||
eea6121a | 10362 | ent->got.offset = s->size; |
e7b938ca | 10363 | if ((ent->tls_type & *lgot_masks & TLS_GD) != 0) |
927be08e | 10364 | { |
19e08130 AM |
10365 | ent_size *= 2; |
10366 | rel_size *= 2; | |
10367 | } | |
10368 | s->size += ent_size; | |
37da22e5 | 10369 | if ((*lgot_masks & (TLS_TLS | PLT_IFUNC)) == PLT_IFUNC) |
19e08130 | 10370 | { |
33e44f2e | 10371 | htab->elf.irelplt->size += rel_size; |
19e08130 AM |
10372 | htab->got_reli_size += rel_size; |
10373 | } | |
f15d0b54 AM |
10374 | else if (bfd_link_pic (info) |
10375 | && !((ent->tls_type & TLS_TPREL) != 0 | |
10376 | && bfd_link_executable (info))) | |
19e08130 AM |
10377 | { |
10378 | asection *srel = ppc64_elf_tdata (ibfd)->relgot; | |
10379 | srel->size += rel_size; | |
927be08e | 10380 | } |
0b8bcf0d | 10381 | pent = &ent->next; |
411e1bfb AM |
10382 | } |
10383 | } | |
10384 | else | |
0b8bcf0d | 10385 | *pent = ent->next; |
65f38f15 | 10386 | } |
e054468f | 10387 | |
2d7ad24e AM |
10388 | /* Allocate space for plt calls to local syms. */ |
10389 | lgot_masks = (unsigned char *) end_local_plt; | |
10390 | for (; local_plt < end_local_plt; ++local_plt, ++lgot_masks) | |
e054468f AM |
10391 | { |
10392 | struct plt_entry *ent; | |
10393 | ||
10394 | for (ent = *local_plt; ent != NULL; ent = ent->next) | |
10395 | if (ent->plt.refcount > 0) | |
10396 | { | |
2d7ad24e AM |
10397 | if ((*lgot_masks & (TLS_TLS | PLT_IFUNC)) == PLT_IFUNC) |
10398 | { | |
10399 | s = htab->elf.iplt; | |
10400 | ent->plt.offset = s->size; | |
10401 | s->size += PLT_ENTRY_SIZE (htab); | |
10402 | htab->elf.irelplt->size += sizeof (Elf64_External_Rela); | |
10403 | } | |
3e04d765 AM |
10404 | else if (htab->can_convert_all_inline_plt |
10405 | || (*lgot_masks & (TLS_TLS | PLT_KEEP)) != PLT_KEEP) | |
2d7ad24e AM |
10406 | ent->plt.offset = (bfd_vma) -1; |
10407 | else | |
10408 | { | |
10409 | s = htab->pltlocal; | |
10410 | ent->plt.offset = s->size; | |
10411 | s->size += LOCAL_PLT_ENTRY_SIZE (htab); | |
10412 | if (bfd_link_pic (info)) | |
10413 | htab->relpltlocal->size += sizeof (Elf64_External_Rela); | |
10414 | } | |
e054468f AM |
10415 | } |
10416 | else | |
10417 | ent->plt.offset = (bfd_vma) -1; | |
10418 | } | |
65f38f15 AM |
10419 | } |
10420 | ||
10421 | /* Allocate global sym .plt and .got entries, and space for global | |
10422 | sym dynamic relocs. */ | |
4ce794b7 | 10423 | elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info); |
a345bc8d | 10424 | |
0e1862bb | 10425 | if (!htab->opd_abi && !bfd_link_pic (info)) |
a345bc8d | 10426 | elf_link_hash_traverse (&htab->elf, size_global_entry_stubs, info); |
65f38f15 | 10427 | |
7865406b | 10428 | first_tlsld = NULL; |
c72f2fb2 | 10429 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
102890f0 | 10430 | { |
7865406b AM |
10431 | struct got_entry *ent; |
10432 | ||
0c8d6e5c | 10433 | if (!is_ppc64_elf (ibfd)) |
102890f0 AM |
10434 | continue; |
10435 | ||
7865406b AM |
10436 | ent = ppc64_tlsld_got (ibfd); |
10437 | if (ent->got.refcount > 0) | |
102890f0 | 10438 | { |
7865406b | 10439 | if (!htab->do_multi_toc && first_tlsld != NULL) |
102890f0 | 10440 | { |
7865406b AM |
10441 | ent->is_indirect = TRUE; |
10442 | ent->got.ent = first_tlsld; | |
10443 | } | |
10444 | else | |
10445 | { | |
10446 | if (first_tlsld == NULL) | |
10447 | first_tlsld = ent; | |
10448 | s = ppc64_elf_tdata (ibfd)->got; | |
10449 | ent->got.offset = s->size; | |
10450 | ent->owner = ibfd; | |
10451 | s->size += 16; | |
0e1862bb | 10452 | if (bfd_link_pic (info)) |
7865406b AM |
10453 | { |
10454 | asection *srel = ppc64_elf_tdata (ibfd)->relgot; | |
10455 | srel->size += sizeof (Elf64_External_Rela); | |
10456 | } | |
102890f0 AM |
10457 | } |
10458 | } | |
10459 | else | |
7865406b | 10460 | ent->got.offset = (bfd_vma) -1; |
102890f0 AM |
10461 | } |
10462 | ||
65f38f15 AM |
10463 | /* We now have determined the sizes of the various dynamic sections. |
10464 | Allocate memory for them. */ | |
b34976b6 | 10465 | relocs = FALSE; |
65f38f15 AM |
10466 | for (s = dynobj->sections; s != NULL; s = s->next) |
10467 | { | |
10468 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
10469 | continue; | |
10470 | ||
4ce794b7 | 10471 | if (s == htab->brlt || s == htab->relbrlt) |
721956f4 AM |
10472 | /* These haven't been allocated yet; don't strip. */ |
10473 | continue; | |
33e44f2e AM |
10474 | else if (s == htab->elf.sgot |
10475 | || s == htab->elf.splt | |
10476 | || s == htab->elf.iplt | |
2d7ad24e | 10477 | || s == htab->pltlocal |
c456f082 | 10478 | || s == htab->glink |
9e390558 | 10479 | || s == htab->global_entry |
5474d94f AM |
10480 | || s == htab->elf.sdynbss |
10481 | || s == htab->elf.sdynrelro) | |
65f38f15 AM |
10482 | { |
10483 | /* Strip this section if we don't need it; see the | |
10484 | comment below. */ | |
5bd4f169 | 10485 | } |
58d180e8 AM |
10486 | else if (s == htab->glink_eh_frame) |
10487 | { | |
10488 | if (!bfd_is_abs_section (s->output_section)) | |
10489 | /* Not sized yet. */ | |
10490 | continue; | |
10491 | } | |
70cc837d | 10492 | else if (CONST_STRNEQ (s->name, ".rela")) |
5bd4f169 | 10493 | { |
c456f082 | 10494 | if (s->size != 0) |
5bd4f169 | 10495 | { |
33e44f2e | 10496 | if (s != htab->elf.srelplt) |
b34976b6 | 10497 | relocs = TRUE; |
5bd4f169 AM |
10498 | |
10499 | /* We use the reloc_count field as a counter if we need | |
10500 | to copy relocs into the output file. */ | |
10501 | s->reloc_count = 0; | |
10502 | } | |
10503 | } | |
65f38f15 | 10504 | else |
5bd4f169 AM |
10505 | { |
10506 | /* It's not one of our sections, so don't allocate space. */ | |
10507 | continue; | |
10508 | } | |
10509 | ||
eea6121a | 10510 | if (s->size == 0) |
5bd4f169 | 10511 | { |
c456f082 AM |
10512 | /* If we don't need this section, strip it from the |
10513 | output file. This is mostly to handle .rela.bss and | |
10514 | .rela.plt. We must create both sections in | |
10515 | create_dynamic_sections, because they must be created | |
10516 | before the linker maps input sections to output | |
10517 | sections. The linker does that before | |
10518 | adjust_dynamic_symbol is called, and it is that | |
10519 | function which decides whether anything needs to go | |
10520 | into these sections. */ | |
8423293d | 10521 | s->flags |= SEC_EXCLUDE; |
5bd4f169 AM |
10522 | continue; |
10523 | } | |
10524 | ||
06bcf541 AM |
10525 | if (bfd_is_abs_section (s->output_section)) |
10526 | _bfd_error_handler (_("warning: discarding dynamic section %s"), | |
10527 | s->name); | |
10528 | ||
c456f082 | 10529 | if ((s->flags & SEC_HAS_CONTENTS) == 0) |
5f333394 AM |
10530 | continue; |
10531 | ||
65f38f15 AM |
10532 | /* Allocate memory for the section contents. We use bfd_zalloc |
10533 | here in case unused entries are not reclaimed before the | |
10534 | section's contents are written out. This should not happen, | |
411e1bfb AM |
10535 | but this way if it does we get a R_PPC64_NONE reloc in .rela |
10536 | sections instead of garbage. | |
10537 | We also rely on the section contents being zero when writing | |
5474d94f | 10538 | the GOT and .dynrelro. */ |
eea6121a | 10539 | s->contents = bfd_zalloc (dynobj, s->size); |
65f38f15 | 10540 | if (s->contents == NULL) |
b34976b6 | 10541 | return FALSE; |
5bd4f169 AM |
10542 | } |
10543 | ||
c72f2fb2 | 10544 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
e717da7e | 10545 | { |
0c8d6e5c | 10546 | if (!is_ppc64_elf (ibfd)) |
7b53ace3 AM |
10547 | continue; |
10548 | ||
e717da7e | 10549 | s = ppc64_elf_tdata (ibfd)->got; |
33e44f2e | 10550 | if (s != NULL && s != htab->elf.sgot) |
e717da7e | 10551 | { |
eea6121a | 10552 | if (s->size == 0) |
8423293d | 10553 | s->flags |= SEC_EXCLUDE; |
e717da7e AM |
10554 | else |
10555 | { | |
eea6121a | 10556 | s->contents = bfd_zalloc (ibfd, s->size); |
e717da7e AM |
10557 | if (s->contents == NULL) |
10558 | return FALSE; | |
10559 | } | |
10560 | } | |
10561 | s = ppc64_elf_tdata (ibfd)->relgot; | |
10562 | if (s != NULL) | |
10563 | { | |
eea6121a | 10564 | if (s->size == 0) |
8423293d | 10565 | s->flags |= SEC_EXCLUDE; |
e717da7e AM |
10566 | else |
10567 | { | |
eea6121a | 10568 | s->contents = bfd_zalloc (ibfd, s->size); |
e717da7e AM |
10569 | if (s->contents == NULL) |
10570 | return FALSE; | |
10571 | relocs = TRUE; | |
10572 | s->reloc_count = 0; | |
10573 | } | |
10574 | } | |
10575 | } | |
10576 | ||
e86ce104 | 10577 | if (htab->elf.dynamic_sections_created) |
5bd4f169 | 10578 | { |
e8910a83 AM |
10579 | bfd_boolean tls_opt; |
10580 | ||
5bd4f169 AM |
10581 | /* Add some entries to the .dynamic section. We fill in the |
10582 | values later, in ppc64_elf_finish_dynamic_sections, but we | |
10583 | must add the entries now so that we get the correct size for | |
10584 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
10585 | dynamic linker and used by the debugger. */ | |
dc810e39 | 10586 | #define add_dynamic_entry(TAG, VAL) \ |
5a580b3a | 10587 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) |
dc810e39 | 10588 | |
0e1862bb | 10589 | if (bfd_link_executable (info)) |
5bd4f169 | 10590 | { |
dc810e39 | 10591 | if (!add_dynamic_entry (DT_DEBUG, 0)) |
b34976b6 | 10592 | return FALSE; |
5bd4f169 AM |
10593 | } |
10594 | ||
33e44f2e | 10595 | if (htab->elf.splt != NULL && htab->elf.splt->size != 0) |
5bd4f169 | 10596 | { |
dc810e39 AM |
10597 | if (!add_dynamic_entry (DT_PLTGOT, 0) |
10598 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
10599 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
5d1634d7 AM |
10600 | || !add_dynamic_entry (DT_JMPREL, 0) |
10601 | || !add_dynamic_entry (DT_PPC64_GLINK, 0)) | |
b34976b6 | 10602 | return FALSE; |
5bd4f169 AM |
10603 | } |
10604 | ||
ee67d69a | 10605 | if (NO_OPD_RELOCS && abiversion (output_bfd) <= 1) |
19397422 AM |
10606 | { |
10607 | if (!add_dynamic_entry (DT_PPC64_OPD, 0) | |
10608 | || !add_dynamic_entry (DT_PPC64_OPDSZ, 0)) | |
b34976b6 | 10609 | return FALSE; |
19397422 AM |
10610 | } |
10611 | ||
7c9cf415 | 10612 | tls_opt = (htab->params->tls_get_addr_opt |
e8910a83 AM |
10613 | && htab->tls_get_addr_fd != NULL |
10614 | && htab->tls_get_addr_fd->elf.plt.plist != NULL); | |
10615 | if (tls_opt || !htab->opd_abi) | |
10616 | { | |
10617 | if (!add_dynamic_entry (DT_PPC64_OPT, tls_opt ? PPC64_OPT_TLS : 0)) | |
10618 | return FALSE; | |
10619 | } | |
a7f2871e | 10620 | |
5bd4f169 AM |
10621 | if (relocs) |
10622 | { | |
dc810e39 AM |
10623 | if (!add_dynamic_entry (DT_RELA, 0) |
10624 | || !add_dynamic_entry (DT_RELASZ, 0) | |
10625 | || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela))) | |
b34976b6 | 10626 | return FALSE; |
5bd4f169 | 10627 | |
65f38f15 AM |
10628 | /* If any dynamic relocs apply to a read-only section, |
10629 | then we need a DT_TEXTREL entry. */ | |
248866a8 | 10630 | if ((info->flags & DF_TEXTREL) == 0) |
a345bc8d | 10631 | elf_link_hash_traverse (&htab->elf, maybe_set_textrel, info); |
5bd4f169 | 10632 | |
65f38f15 | 10633 | if ((info->flags & DF_TEXTREL) != 0) |
5bd4f169 | 10634 | { |
65f38f15 | 10635 | if (!add_dynamic_entry (DT_TEXTREL, 0)) |
b34976b6 | 10636 | return FALSE; |
5bd4f169 | 10637 | } |
5bd4f169 | 10638 | } |
5bd4f169 | 10639 | } |
65f38f15 | 10640 | #undef add_dynamic_entry |
5bd4f169 | 10641 | |
b34976b6 | 10642 | return TRUE; |
5bd4f169 AM |
10643 | } |
10644 | ||
a345bc8d AM |
10645 | /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */ |
10646 | ||
10647 | static bfd_boolean | |
10648 | ppc64_elf_hash_symbol (struct elf_link_hash_entry *h) | |
10649 | { | |
10650 | if (h->plt.plist != NULL | |
10651 | && !h->def_regular | |
10652 | && !h->pointer_equality_needed) | |
10653 | return FALSE; | |
10654 | ||
10655 | return _bfd_elf_hash_symbol (h); | |
10656 | } | |
10657 | ||
721956f4 | 10658 | /* Determine the type of stub needed, if any, for a call. */ |
5bd4f169 | 10659 | |
4ce794b7 AM |
10660 | static inline enum ppc_stub_type |
10661 | ppc_type_of_stub (asection *input_sec, | |
10662 | const Elf_Internal_Rela *rel, | |
10663 | struct ppc_link_hash_entry **hash, | |
e054468f | 10664 | struct plt_entry **plt_ent, |
6911b7dc AM |
10665 | bfd_vma destination, |
10666 | unsigned long local_off) | |
5bd4f169 | 10667 | { |
721956f4 AM |
10668 | struct ppc_link_hash_entry *h = *hash; |
10669 | bfd_vma location; | |
10670 | bfd_vma branch_offset; | |
10671 | bfd_vma max_branch_offset; | |
4ce794b7 | 10672 | enum elf_ppc64_reloc_type r_type; |
5bd4f169 | 10673 | |
721956f4 AM |
10674 | if (h != NULL) |
10675 | { | |
e054468f | 10676 | struct plt_entry *ent; |
7fe2b9a6 | 10677 | struct ppc_link_hash_entry *fdh = h; |
b31867b6 AM |
10678 | if (h->oh != NULL |
10679 | && h->oh->is_func_descriptor) | |
7b8f6675 AM |
10680 | { |
10681 | fdh = ppc_follow_link (h->oh); | |
10682 | *hash = fdh; | |
10683 | } | |
8387904d | 10684 | |
e054468f AM |
10685 | for (ent = fdh->elf.plt.plist; ent != NULL; ent = ent->next) |
10686 | if (ent->addend == rel->r_addend | |
10687 | && ent->plt.offset != (bfd_vma) -1) | |
10688 | { | |
e054468f AM |
10689 | *plt_ent = ent; |
10690 | return ppc_stub_plt_call; | |
10691 | } | |
5bd4f169 | 10692 | |
7fe2b9a6 AM |
10693 | /* Here, we know we don't have a plt entry. If we don't have a |
10694 | either a defined function descriptor or a defined entry symbol | |
10695 | in a regular object file, then it is pointless trying to make | |
10696 | any other type of stub. */ | |
854b41e7 AM |
10697 | if (!is_static_defined (&fdh->elf) |
10698 | && !is_static_defined (&h->elf)) | |
721956f4 | 10699 | return ppc_stub_none; |
5d1634d7 | 10700 | } |
e054468f AM |
10701 | else if (elf_local_got_ents (input_sec->owner) != NULL) |
10702 | { | |
10703 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (input_sec->owner); | |
10704 | struct plt_entry **local_plt = (struct plt_entry **) | |
10705 | elf_local_got_ents (input_sec->owner) + symtab_hdr->sh_info; | |
10706 | unsigned long r_symndx = ELF64_R_SYM (rel->r_info); | |
10707 | ||
10708 | if (local_plt[r_symndx] != NULL) | |
10709 | { | |
10710 | struct plt_entry *ent; | |
10711 | ||
10712 | for (ent = local_plt[r_symndx]; ent != NULL; ent = ent->next) | |
10713 | if (ent->addend == rel->r_addend | |
10714 | && ent->plt.offset != (bfd_vma) -1) | |
10715 | { | |
10716 | *plt_ent = ent; | |
10717 | return ppc_stub_plt_call; | |
10718 | } | |
10719 | } | |
10720 | } | |
5d1634d7 | 10721 | |
721956f4 AM |
10722 | /* Determine where the call point is. */ |
10723 | location = (input_sec->output_offset | |
10724 | + input_sec->output_section->vma | |
10725 | + rel->r_offset); | |
5d1634d7 | 10726 | |
721956f4 AM |
10727 | branch_offset = destination - location; |
10728 | r_type = ELF64_R_TYPE (rel->r_info); | |
5d1634d7 | 10729 | |
721956f4 AM |
10730 | /* Determine if a long branch stub is needed. */ |
10731 | max_branch_offset = 1 << 25; | |
23cedd1d AM |
10732 | if (r_type == R_PPC64_REL14 |
10733 | || r_type == R_PPC64_REL14_BRTAKEN | |
10734 | || r_type == R_PPC64_REL14_BRNTAKEN) | |
721956f4 | 10735 | max_branch_offset = 1 << 15; |
5d1634d7 | 10736 | |
6911b7dc | 10737 | if (branch_offset + max_branch_offset >= 2 * max_branch_offset - local_off) |
721956f4 AM |
10738 | /* We need a stub. Figure out whether a long_branch or plt_branch |
10739 | is needed later. */ | |
10740 | return ppc_stub_long_branch; | |
5d1634d7 | 10741 | |
721956f4 | 10742 | return ppc_stub_none; |
5d1634d7 AM |
10743 | } |
10744 | ||
794e51c0 AM |
10745 | /* With power7 weakly ordered memory model, it is possible for ld.so |
10746 | to update a plt entry in one thread and have another thread see a | |
10747 | stale zero toc entry. To avoid this we need some sort of acquire | |
10748 | barrier in the call stub. One solution is to make the load of the | |
10749 | toc word seem to appear to depend on the load of the function entry | |
10750 | word. Another solution is to test for r2 being zero, and branch to | |
10751 | the appropriate glink entry if so. | |
10752 | ||
10753 | . fake dep barrier compare | |
71a39c98 AM |
10754 | . ld 12,xxx(2) ld 12,xxx(2) |
10755 | . mtctr 12 mtctr 12 | |
10756 | . xor 11,12,12 ld 2,xxx+8(2) | |
794e51c0 AM |
10757 | . add 2,2,11 cmpldi 2,0 |
10758 | . ld 2,xxx+8(2) bnectr+ | |
10759 | . bctr b <glink_entry> | |
10760 | ||
10761 | The solution involving the compare turns out to be faster, so | |
10762 | that's what we use unless the branch won't reach. */ | |
10763 | ||
10764 | #define ALWAYS_USE_FAKE_DEP 0 | |
10765 | #define ALWAYS_EMIT_R2SAVE 0 | |
5d1634d7 | 10766 | |
794e51c0 AM |
10767 | static inline unsigned int |
10768 | plt_stub_size (struct ppc_link_hash_table *htab, | |
10769 | struct ppc_stub_hash_entry *stub_entry, | |
10770 | bfd_vma off) | |
10771 | { | |
b9e5796b AM |
10772 | unsigned size = 12; |
10773 | ||
10774 | if (ALWAYS_EMIT_R2SAVE | |
10775 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
10776 | size += 4; | |
10777 | if (PPC_HA (off) != 0) | |
794e51c0 | 10778 | size += 4; |
b9e5796b AM |
10779 | if (htab->opd_abi) |
10780 | { | |
10781 | size += 4; | |
e7d1c40c | 10782 | if (htab->params->plt_static_chain) |
b9e5796b | 10783 | size += 4; |
bd4d2eaa AM |
10784 | if (htab->params->plt_thread_safe |
10785 | && htab->elf.dynamic_sections_created | |
10786 | && stub_entry->h != NULL | |
10787 | && stub_entry->h->elf.dynindx != -1) | |
b9e5796b | 10788 | size += 8; |
e7d1c40c | 10789 | if (PPC_HA (off + 8 + 8 * htab->params->plt_static_chain) != PPC_HA (off)) |
b9e5796b AM |
10790 | size += 4; |
10791 | } | |
794e51c0 AM |
10792 | if (stub_entry->h != NULL |
10793 | && (stub_entry->h == htab->tls_get_addr_fd | |
10794 | || stub_entry->h == htab->tls_get_addr) | |
7c9cf415 | 10795 | && htab->params->tls_get_addr_opt) |
f378ab09 AM |
10796 | { |
10797 | size += 7 * 4; | |
10798 | if (ALWAYS_EMIT_R2SAVE | |
10799 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
407aa07c | 10800 | size += 6 * 4; |
f378ab09 | 10801 | } |
794e51c0 AM |
10802 | return size; |
10803 | } | |
10804 | ||
2420fff6 AM |
10805 | /* Depending on the sign of plt_stub_align: |
10806 | If positive, return the padding to align to a 2**plt_stub_align | |
10807 | boundary. | |
10808 | If negative, if this stub would cross fewer 2**plt_stub_align | |
10809 | boundaries if we align, then return the padding needed to do so. */ | |
10810 | ||
794e51c0 AM |
10811 | static inline unsigned int |
10812 | plt_stub_pad (struct ppc_link_hash_table *htab, | |
10813 | struct ppc_stub_hash_entry *stub_entry, | |
10814 | bfd_vma plt_off) | |
10815 | { | |
2420fff6 | 10816 | int stub_align; |
794e51c0 | 10817 | unsigned stub_size = plt_stub_size (htab, stub_entry, plt_off); |
6f20ed8a | 10818 | bfd_vma stub_off = stub_entry->group->stub_sec->size; |
794e51c0 | 10819 | |
2420fff6 AM |
10820 | if (htab->params->plt_stub_align >= 0) |
10821 | { | |
10822 | stub_align = 1 << htab->params->plt_stub_align; | |
10823 | if ((stub_off & (stub_align - 1)) != 0) | |
10824 | return stub_align - (stub_off & (stub_align - 1)); | |
10825 | return 0; | |
10826 | } | |
10827 | ||
10828 | stub_align = 1 << -htab->params->plt_stub_align; | |
794e51c0 | 10829 | if (((stub_off + stub_size - 1) & -stub_align) - (stub_off & -stub_align) |
e05fa0ba | 10830 | > ((stub_size - 1) & -stub_align)) |
794e51c0 AM |
10831 | return stub_align - (stub_off & (stub_align - 1)); |
10832 | return 0; | |
10833 | } | |
10834 | ||
10835 | /* Build a .plt call stub. */ | |
10836 | ||
10837 | static inline bfd_byte * | |
10838 | build_plt_stub (struct ppc_link_hash_table *htab, | |
10839 | struct ppc_stub_hash_entry *stub_entry, | |
10840 | bfd_byte *p, bfd_vma offset, Elf_Internal_Rela *r) | |
10841 | { | |
e7d1c40c | 10842 | bfd *obfd = htab->params->stub_bfd; |
b9e5796b | 10843 | bfd_boolean plt_load_toc = htab->opd_abi; |
e7d1c40c | 10844 | bfd_boolean plt_static_chain = htab->params->plt_static_chain; |
bd4d2eaa AM |
10845 | bfd_boolean plt_thread_safe = (htab->params->plt_thread_safe |
10846 | && htab->elf.dynamic_sections_created | |
10847 | && stub_entry->h != NULL | |
10848 | && stub_entry->h->elf.dynindx != -1); | |
794e51c0 AM |
10849 | bfd_boolean use_fake_dep = plt_thread_safe; |
10850 | bfd_vma cmp_branch_off = 0; | |
10851 | ||
10852 | if (!ALWAYS_USE_FAKE_DEP | |
b9e5796b | 10853 | && plt_load_toc |
794e51c0 | 10854 | && plt_thread_safe |
bd4d2eaa AM |
10855 | && !((stub_entry->h == htab->tls_get_addr_fd |
10856 | || stub_entry->h == htab->tls_get_addr) | |
7c9cf415 | 10857 | && htab->params->tls_get_addr_opt)) |
794e51c0 AM |
10858 | { |
10859 | bfd_vma pltoff = stub_entry->plt_ent->plt.offset & ~1; | |
b9e5796b AM |
10860 | bfd_vma pltindex = ((pltoff - PLT_INITIAL_ENTRY_SIZE (htab)) |
10861 | / PLT_ENTRY_SIZE (htab)); | |
9e390558 | 10862 | bfd_vma glinkoff = GLINK_PLTRESOLVE_SIZE (htab) + pltindex * 8; |
794e51c0 AM |
10863 | bfd_vma to, from; |
10864 | ||
68d62958 AM |
10865 | if (pltindex > 32768) |
10866 | glinkoff += (pltindex - 32768) * 4; | |
794e51c0 AM |
10867 | to = (glinkoff |
10868 | + htab->glink->output_offset | |
10869 | + htab->glink->output_section->vma); | |
6f20ed8a | 10870 | from = (p - stub_entry->group->stub_sec->contents |
794e51c0 AM |
10871 | + 4 * (ALWAYS_EMIT_R2SAVE |
10872 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
10873 | + 4 * (PPC_HA (offset) != 0) | |
10874 | + 4 * (PPC_HA (offset + 8 + 8 * plt_static_chain) | |
10875 | != PPC_HA (offset)) | |
10876 | + 4 * (plt_static_chain != 0) | |
10877 | + 20 | |
6f20ed8a AM |
10878 | + stub_entry->group->stub_sec->output_offset |
10879 | + stub_entry->group->stub_sec->output_section->vma); | |
794e51c0 AM |
10880 | cmp_branch_off = to - from; |
10881 | use_fake_dep = cmp_branch_off + (1 << 25) >= (1 << 26); | |
10882 | } | |
10883 | ||
ac2df442 AM |
10884 | if (PPC_HA (offset) != 0) |
10885 | { | |
176a0d42 AM |
10886 | if (r != NULL) |
10887 | { | |
794e51c0 AM |
10888 | if (ALWAYS_EMIT_R2SAVE |
10889 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
10890 | r[0].r_offset += 4; | |
176a0d42 | 10891 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA); |
3b421ab3 | 10892 | r[1].r_offset = r[0].r_offset + 4; |
176a0d42 AM |
10893 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); |
10894 | r[1].r_addend = r[0].r_addend; | |
b9e5796b | 10895 | if (plt_load_toc) |
176a0d42 | 10896 | { |
b9e5796b | 10897 | if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset)) |
c7131b65 | 10898 | { |
b9e5796b AM |
10899 | r[2].r_offset = r[1].r_offset + 4; |
10900 | r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO); | |
10901 | r[2].r_addend = r[0].r_addend; | |
10902 | } | |
10903 | else | |
10904 | { | |
10905 | r[2].r_offset = r[1].r_offset + 8 + 8 * use_fake_dep; | |
10906 | r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); | |
10907 | r[2].r_addend = r[0].r_addend + 8; | |
10908 | if (plt_static_chain) | |
10909 | { | |
10910 | r[3].r_offset = r[2].r_offset + 4; | |
10911 | r[3].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); | |
10912 | r[3].r_addend = r[0].r_addend + 16; | |
10913 | } | |
c7131b65 | 10914 | } |
176a0d42 AM |
10915 | } |
10916 | } | |
794e51c0 AM |
10917 | if (ALWAYS_EMIT_R2SAVE |
10918 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
a078d95a | 10919 | bfd_put_32 (obfd, STD_R2_0R1 + STK_TOC (htab), p), p += 4; |
397998fc AM |
10920 | if (plt_load_toc) |
10921 | { | |
10922 | bfd_put_32 (obfd, ADDIS_R11_R2 | PPC_HA (offset), p), p += 4; | |
10923 | bfd_put_32 (obfd, LD_R12_0R11 | PPC_LO (offset), p), p += 4; | |
10924 | } | |
10925 | else | |
10926 | { | |
10927 | bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (offset), p), p += 4; | |
10928 | bfd_put_32 (obfd, LD_R12_0R12 | PPC_LO (offset), p), p += 4; | |
10929 | } | |
b9e5796b AM |
10930 | if (plt_load_toc |
10931 | && PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset)) | |
ac2df442 | 10932 | { |
71a39c98 | 10933 | bfd_put_32 (obfd, ADDI_R11_R11 | PPC_LO (offset), p), p += 4; |
ac2df442 AM |
10934 | offset = 0; |
10935 | } | |
71a39c98 | 10936 | bfd_put_32 (obfd, MTCTR_R12, p), p += 4; |
b9e5796b | 10937 | if (plt_load_toc) |
794e51c0 | 10938 | { |
b9e5796b AM |
10939 | if (use_fake_dep) |
10940 | { | |
10941 | bfd_put_32 (obfd, XOR_R2_R12_R12, p), p += 4; | |
10942 | bfd_put_32 (obfd, ADD_R11_R11_R2, p), p += 4; | |
10943 | } | |
10944 | bfd_put_32 (obfd, LD_R2_0R11 | PPC_LO (offset + 8), p), p += 4; | |
10945 | if (plt_static_chain) | |
10946 | bfd_put_32 (obfd, LD_R11_0R11 | PPC_LO (offset + 16), p), p += 4; | |
794e51c0 | 10947 | } |
ac2df442 AM |
10948 | } |
10949 | else | |
10950 | { | |
176a0d42 AM |
10951 | if (r != NULL) |
10952 | { | |
794e51c0 AM |
10953 | if (ALWAYS_EMIT_R2SAVE |
10954 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
10955 | r[0].r_offset += 4; | |
176a0d42 | 10956 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); |
b9e5796b | 10957 | if (plt_load_toc) |
176a0d42 | 10958 | { |
b9e5796b | 10959 | if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset)) |
c7131b65 | 10960 | { |
b9e5796b AM |
10961 | r[1].r_offset = r[0].r_offset + 4; |
10962 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16); | |
10963 | r[1].r_addend = r[0].r_addend; | |
10964 | } | |
10965 | else | |
10966 | { | |
10967 | r[1].r_offset = r[0].r_offset + 8 + 8 * use_fake_dep; | |
10968 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); | |
10969 | r[1].r_addend = r[0].r_addend + 8 + 8 * plt_static_chain; | |
10970 | if (plt_static_chain) | |
10971 | { | |
10972 | r[2].r_offset = r[1].r_offset + 4; | |
10973 | r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); | |
10974 | r[2].r_addend = r[0].r_addend + 8; | |
10975 | } | |
c7131b65 | 10976 | } |
176a0d42 AM |
10977 | } |
10978 | } | |
794e51c0 AM |
10979 | if (ALWAYS_EMIT_R2SAVE |
10980 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
a078d95a | 10981 | bfd_put_32 (obfd, STD_R2_0R1 + STK_TOC (htab), p), p += 4; |
71a39c98 | 10982 | bfd_put_32 (obfd, LD_R12_0R2 | PPC_LO (offset), p), p += 4; |
b9e5796b AM |
10983 | if (plt_load_toc |
10984 | && PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset)) | |
ac2df442 AM |
10985 | { |
10986 | bfd_put_32 (obfd, ADDI_R2_R2 | PPC_LO (offset), p), p += 4; | |
10987 | offset = 0; | |
10988 | } | |
71a39c98 | 10989 | bfd_put_32 (obfd, MTCTR_R12, p), p += 4; |
b9e5796b | 10990 | if (plt_load_toc) |
794e51c0 | 10991 | { |
b9e5796b AM |
10992 | if (use_fake_dep) |
10993 | { | |
10994 | bfd_put_32 (obfd, XOR_R11_R12_R12, p), p += 4; | |
10995 | bfd_put_32 (obfd, ADD_R2_R2_R11, p), p += 4; | |
10996 | } | |
10997 | if (plt_static_chain) | |
10998 | bfd_put_32 (obfd, LD_R11_0R2 | PPC_LO (offset + 16), p), p += 4; | |
10999 | bfd_put_32 (obfd, LD_R2_0R2 | PPC_LO (offset + 8), p), p += 4; | |
794e51c0 | 11000 | } |
ac2df442 | 11001 | } |
b9e5796b | 11002 | if (plt_load_toc && plt_thread_safe && !use_fake_dep) |
794e51c0 AM |
11003 | { |
11004 | bfd_put_32 (obfd, CMPLDI_R2_0, p), p += 4; | |
11005 | bfd_put_32 (obfd, BNECTR_P4, p), p += 4; | |
22aa0c7e | 11006 | bfd_put_32 (obfd, B_DOT | (cmp_branch_off & 0x3fffffc), p), p += 4; |
794e51c0 AM |
11007 | } |
11008 | else | |
407aa07c | 11009 | bfd_put_32 (obfd, BCTR, p), p += 4; |
5d1634d7 AM |
11010 | return p; |
11011 | } | |
11012 | ||
a7f2871e AM |
11013 | /* Build a special .plt call stub for __tls_get_addr. */ |
11014 | ||
11015 | #define LD_R11_0R3 0xe9630000 | |
11016 | #define LD_R12_0R3 0xe9830000 | |
11017 | #define MR_R0_R3 0x7c601b78 | |
11018 | #define CMPDI_R11_0 0x2c2b0000 | |
11019 | #define ADD_R3_R12_R13 0x7c6c6a14 | |
11020 | #define BEQLR 0x4d820020 | |
11021 | #define MR_R3_R0 0x7c030378 | |
a7f2871e AM |
11022 | #define STD_R11_0R1 0xf9610000 |
11023 | #define BCTRL 0x4e800421 | |
11024 | #define LD_R11_0R1 0xe9610000 | |
a7f2871e AM |
11025 | #define MTLR_R11 0x7d6803a6 |
11026 | ||
11027 | static inline bfd_byte * | |
794e51c0 AM |
11028 | build_tls_get_addr_stub (struct ppc_link_hash_table *htab, |
11029 | struct ppc_stub_hash_entry *stub_entry, | |
11030 | bfd_byte *p, bfd_vma offset, Elf_Internal_Rela *r) | |
a7f2871e | 11031 | { |
e7d1c40c | 11032 | bfd *obfd = htab->params->stub_bfd; |
794e51c0 | 11033 | |
a7f2871e AM |
11034 | bfd_put_32 (obfd, LD_R11_0R3 + 0, p), p += 4; |
11035 | bfd_put_32 (obfd, LD_R12_0R3 + 8, p), p += 4; | |
11036 | bfd_put_32 (obfd, MR_R0_R3, p), p += 4; | |
11037 | bfd_put_32 (obfd, CMPDI_R11_0, p), p += 4; | |
11038 | bfd_put_32 (obfd, ADD_R3_R12_R13, p), p += 4; | |
11039 | bfd_put_32 (obfd, BEQLR, p), p += 4; | |
11040 | bfd_put_32 (obfd, MR_R3_R0, p), p += 4; | |
f378ab09 AM |
11041 | if (r != NULL) |
11042 | r[0].r_offset += 7 * 4; | |
11043 | if (!ALWAYS_EMIT_R2SAVE | |
11044 | && stub_entry->stub_type != ppc_stub_plt_call_r2save) | |
11045 | return build_plt_stub (htab, stub_entry, p, offset, r); | |
11046 | ||
a7f2871e | 11047 | bfd_put_32 (obfd, MFLR_R11, p), p += 4; |
a078d95a | 11048 | bfd_put_32 (obfd, STD_R11_0R1 + STK_LINKER (htab), p), p += 4; |
a7f2871e AM |
11049 | |
11050 | if (r != NULL) | |
f378ab09 | 11051 | r[0].r_offset += 2 * 4; |
794e51c0 | 11052 | p = build_plt_stub (htab, stub_entry, p, offset, r); |
407aa07c | 11053 | bfd_put_32 (obfd, BCTRL, p - 4); |
a7f2871e | 11054 | |
a078d95a | 11055 | bfd_put_32 (obfd, LD_R2_0R1 + STK_TOC (htab), p), p += 4; |
bd4d2eaa | 11056 | bfd_put_32 (obfd, LD_R11_0R1 + STK_LINKER (htab), p), p += 4; |
a7f2871e AM |
11057 | bfd_put_32 (obfd, MTLR_R11, p), p += 4; |
11058 | bfd_put_32 (obfd, BLR, p), p += 4; | |
11059 | ||
11060 | return p; | |
11061 | } | |
11062 | ||
176a0d42 AM |
11063 | static Elf_Internal_Rela * |
11064 | get_relocs (asection *sec, int count) | |
11065 | { | |
11066 | Elf_Internal_Rela *relocs; | |
11067 | struct bfd_elf_section_data *elfsec_data; | |
11068 | ||
11069 | elfsec_data = elf_section_data (sec); | |
11070 | relocs = elfsec_data->relocs; | |
11071 | if (relocs == NULL) | |
11072 | { | |
11073 | bfd_size_type relsize; | |
11074 | relsize = sec->reloc_count * sizeof (*relocs); | |
11075 | relocs = bfd_alloc (sec->owner, relsize); | |
11076 | if (relocs == NULL) | |
11077 | return NULL; | |
11078 | elfsec_data->relocs = relocs; | |
d4730f92 BS |
11079 | elfsec_data->rela.hdr = bfd_zalloc (sec->owner, |
11080 | sizeof (Elf_Internal_Shdr)); | |
11081 | if (elfsec_data->rela.hdr == NULL) | |
11082 | return NULL; | |
11083 | elfsec_data->rela.hdr->sh_size = (sec->reloc_count | |
11084 | * sizeof (Elf64_External_Rela)); | |
11085 | elfsec_data->rela.hdr->sh_entsize = sizeof (Elf64_External_Rela); | |
176a0d42 AM |
11086 | sec->reloc_count = 0; |
11087 | } | |
11088 | relocs += sec->reloc_count; | |
11089 | sec->reloc_count += count; | |
11090 | return relocs; | |
11091 | } | |
11092 | ||
aa374f67 | 11093 | static bfd_vma |
25f53a85 | 11094 | get_r2off (struct bfd_link_info *info, |
aa374f67 AM |
11095 | struct ppc_stub_hash_entry *stub_entry) |
11096 | { | |
25f53a85 | 11097 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
6f20ed8a | 11098 | bfd_vma r2off = htab->sec_info[stub_entry->target_section->id].toc_off; |
aa374f67 AM |
11099 | |
11100 | if (r2off == 0) | |
11101 | { | |
11102 | /* Support linking -R objects. Get the toc pointer from the | |
11103 | opd entry. */ | |
11104 | char buf[8]; | |
b9e5796b AM |
11105 | if (!htab->opd_abi) |
11106 | return r2off; | |
aa374f67 AM |
11107 | asection *opd = stub_entry->h->elf.root.u.def.section; |
11108 | bfd_vma opd_off = stub_entry->h->elf.root.u.def.value; | |
11109 | ||
11110 | if (strcmp (opd->name, ".opd") != 0 | |
11111 | || opd->reloc_count != 0) | |
11112 | { | |
c1c8c1ef | 11113 | info->callbacks->einfo (_("%P: cannot find opd entry toc for `%pT'\n"), |
25f53a85 | 11114 | stub_entry->h->elf.root.root.string); |
aa374f67 | 11115 | bfd_set_error (bfd_error_bad_value); |
a7c49797 | 11116 | return (bfd_vma) -1; |
aa374f67 AM |
11117 | } |
11118 | if (!bfd_get_section_contents (opd->owner, opd, buf, opd_off + 8, 8)) | |
a7c49797 | 11119 | return (bfd_vma) -1; |
aa374f67 | 11120 | r2off = bfd_get_64 (opd->owner, buf); |
25f53a85 | 11121 | r2off -= elf_gp (info->output_bfd); |
aa374f67 | 11122 | } |
6f20ed8a | 11123 | r2off -= htab->sec_info[stub_entry->group->link_sec->id].toc_off; |
aa374f67 AM |
11124 | return r2off; |
11125 | } | |
11126 | ||
b34976b6 | 11127 | static bfd_boolean |
4ce794b7 | 11128 | ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg) |
5d1634d7 | 11129 | { |
721956f4 AM |
11130 | struct ppc_stub_hash_entry *stub_entry; |
11131 | struct ppc_branch_hash_entry *br_entry; | |
5d1634d7 AM |
11132 | struct bfd_link_info *info; |
11133 | struct ppc_link_hash_table *htab; | |
721956f4 AM |
11134 | bfd_byte *loc; |
11135 | bfd_byte *p; | |
ee75fd95 | 11136 | bfd_vma dest, off; |
176a0d42 | 11137 | Elf_Internal_Rela *r; |
e054468f | 11138 | asection *plt; |
5d1634d7 | 11139 | |
721956f4 AM |
11140 | /* Massage our args to the form they really have. */ |
11141 | stub_entry = (struct ppc_stub_hash_entry *) gen_entry; | |
4ce794b7 | 11142 | info = in_arg; |
5d1634d7 | 11143 | |
5d1634d7 | 11144 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
11145 | if (htab == NULL) |
11146 | return FALSE; | |
5d1634d7 | 11147 | |
721956f4 | 11148 | /* Make a note of the offset within the stubs for this entry. */ |
6f20ed8a AM |
11149 | stub_entry->stub_offset = stub_entry->group->stub_sec->size; |
11150 | loc = stub_entry->group->stub_sec->contents + stub_entry->stub_offset; | |
721956f4 | 11151 | |
4ce794b7 | 11152 | htab->stub_count[stub_entry->stub_type - 1] += 1; |
721956f4 | 11153 | switch (stub_entry->stub_type) |
5d1634d7 | 11154 | { |
721956f4 | 11155 | case ppc_stub_long_branch: |
ad8e1ba5 | 11156 | case ppc_stub_long_branch_r2off: |
721956f4 | 11157 | /* Branches are relative. This is where we are going to. */ |
6911b7dc AM |
11158 | dest = (stub_entry->target_value |
11159 | + stub_entry->target_section->output_offset | |
11160 | + stub_entry->target_section->output_section->vma); | |
11161 | dest += PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other); | |
11162 | off = dest; | |
5d1634d7 | 11163 | |
721956f4 AM |
11164 | /* And this is where we are coming from. */ |
11165 | off -= (stub_entry->stub_offset | |
6f20ed8a AM |
11166 | + stub_entry->group->stub_sec->output_offset |
11167 | + stub_entry->group->stub_sec->output_section->vma); | |
e86ce104 | 11168 | |
9e390558 | 11169 | p = loc; |
ac2df442 | 11170 | if (stub_entry->stub_type == ppc_stub_long_branch_r2off) |
ad8e1ba5 | 11171 | { |
25f53a85 | 11172 | bfd_vma r2off = get_r2off (info, stub_entry); |
ad8e1ba5 | 11173 | |
a7c49797 | 11174 | if (r2off == (bfd_vma) -1) |
aa374f67 AM |
11175 | { |
11176 | htab->stub_error = TRUE; | |
11177 | return FALSE; | |
11178 | } | |
9e390558 AM |
11179 | bfd_put_32 (htab->params->stub_bfd, STD_R2_0R1 + STK_TOC (htab), p); |
11180 | p += 4; | |
ac2df442 AM |
11181 | if (PPC_HA (r2off) != 0) |
11182 | { | |
e7d1c40c | 11183 | bfd_put_32 (htab->params->stub_bfd, |
9e390558 AM |
11184 | ADDIS_R2_R2 | PPC_HA (r2off), p); |
11185 | p += 4; | |
a7c49797 AM |
11186 | } |
11187 | if (PPC_LO (r2off) != 0) | |
11188 | { | |
11189 | bfd_put_32 (htab->params->stub_bfd, | |
9e390558 AM |
11190 | ADDI_R2_R2 | PPC_LO (r2off), p); |
11191 | p += 4; | |
ac2df442 | 11192 | } |
9e390558 | 11193 | off -= p - loc; |
ad8e1ba5 | 11194 | } |
9e390558 AM |
11195 | bfd_put_32 (htab->params->stub_bfd, B_DOT | (off & 0x3fffffc), p); |
11196 | p += 4; | |
ad8e1ba5 | 11197 | |
5c3dead3 AM |
11198 | if (off + (1 << 25) >= (bfd_vma) (1 << 26)) |
11199 | { | |
cf97bcb0 AM |
11200 | _bfd_error_handler |
11201 | (_("long branch stub `%s' offset overflow"), | |
bc30df16 | 11202 | stub_entry->root.string); |
5c3dead3 AM |
11203 | htab->stub_error = TRUE; |
11204 | return FALSE; | |
11205 | } | |
ee75fd95 AM |
11206 | |
11207 | if (info->emitrelocations) | |
11208 | { | |
6f20ed8a | 11209 | r = get_relocs (stub_entry->group->stub_sec, 1); |
176a0d42 AM |
11210 | if (r == NULL) |
11211 | return FALSE; | |
9e390558 | 11212 | r->r_offset = p - 4 - stub_entry->group->stub_sec->contents; |
ee75fd95 AM |
11213 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL24); |
11214 | r->r_addend = dest; | |
11215 | if (stub_entry->h != NULL) | |
11216 | { | |
11217 | struct elf_link_hash_entry **hashes; | |
11218 | unsigned long symndx; | |
11219 | struct ppc_link_hash_entry *h; | |
11220 | ||
e7d1c40c | 11221 | hashes = elf_sym_hashes (htab->params->stub_bfd); |
ee75fd95 AM |
11222 | if (hashes == NULL) |
11223 | { | |
11224 | bfd_size_type hsize; | |
11225 | ||
11226 | hsize = (htab->stub_globals + 1) * sizeof (*hashes); | |
e7d1c40c | 11227 | hashes = bfd_zalloc (htab->params->stub_bfd, hsize); |
ee75fd95 AM |
11228 | if (hashes == NULL) |
11229 | return FALSE; | |
e7d1c40c | 11230 | elf_sym_hashes (htab->params->stub_bfd) = hashes; |
ee75fd95 AM |
11231 | htab->stub_globals = 1; |
11232 | } | |
11233 | symndx = htab->stub_globals++; | |
11234 | h = stub_entry->h; | |
11235 | hashes[symndx] = &h->elf; | |
11236 | r->r_info = ELF64_R_INFO (symndx, R_PPC64_REL24); | |
11237 | if (h->oh != NULL && h->oh->is_func) | |
b31867b6 | 11238 | h = ppc_follow_link (h->oh); |
ee75fd95 AM |
11239 | if (h->elf.root.u.def.section != stub_entry->target_section) |
11240 | /* H is an opd symbol. The addend must be zero. */ | |
11241 | r->r_addend = 0; | |
11242 | else | |
11243 | { | |
11244 | off = (h->elf.root.u.def.value | |
11245 | + h->elf.root.u.def.section->output_offset | |
11246 | + h->elf.root.u.def.section->output_section->vma); | |
11247 | r->r_addend -= off; | |
11248 | } | |
11249 | } | |
11250 | } | |
721956f4 | 11251 | break; |
e86ce104 | 11252 | |
721956f4 | 11253 | case ppc_stub_plt_branch: |
ad8e1ba5 | 11254 | case ppc_stub_plt_branch_r2off: |
721956f4 AM |
11255 | br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table, |
11256 | stub_entry->root.string + 9, | |
b34976b6 | 11257 | FALSE, FALSE); |
721956f4 AM |
11258 | if (br_entry == NULL) |
11259 | { | |
cf97bcb0 AM |
11260 | _bfd_error_handler (_("can't find branch stub `%s'"), |
11261 | stub_entry->root.string); | |
b34976b6 AM |
11262 | htab->stub_error = TRUE; |
11263 | return FALSE; | |
721956f4 AM |
11264 | } |
11265 | ||
176a0d42 AM |
11266 | dest = (stub_entry->target_value |
11267 | + stub_entry->target_section->output_offset | |
11268 | + stub_entry->target_section->output_section->vma); | |
6911b7dc AM |
11269 | if (stub_entry->stub_type != ppc_stub_plt_branch_r2off) |
11270 | dest += PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other); | |
721956f4 | 11271 | |
176a0d42 | 11272 | bfd_put_64 (htab->brlt->owner, dest, |
4ce794b7 | 11273 | htab->brlt->contents + br_entry->offset); |
721956f4 | 11274 | |
f94498ff | 11275 | if (br_entry->iter == htab->stub_iteration) |
721956f4 | 11276 | { |
f94498ff | 11277 | br_entry->iter = 0; |
84f5d08e | 11278 | |
f94498ff | 11279 | if (htab->relbrlt != NULL) |
84f5d08e | 11280 | { |
f94498ff AM |
11281 | /* Create a reloc for the branch lookup table entry. */ |
11282 | Elf_Internal_Rela rela; | |
11283 | bfd_byte *rl; | |
11284 | ||
11285 | rela.r_offset = (br_entry->offset | |
11286 | + htab->brlt->output_offset | |
11287 | + htab->brlt->output_section->vma); | |
11288 | rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
176a0d42 | 11289 | rela.r_addend = dest; |
f94498ff AM |
11290 | |
11291 | rl = htab->relbrlt->contents; | |
11292 | rl += (htab->relbrlt->reloc_count++ | |
11293 | * sizeof (Elf64_External_Rela)); | |
11294 | bfd_elf64_swap_reloca_out (htab->relbrlt->owner, &rela, rl); | |
11295 | } | |
11296 | else if (info->emitrelocations) | |
11297 | { | |
176a0d42 AM |
11298 | r = get_relocs (htab->brlt, 1); |
11299 | if (r == NULL) | |
11300 | return FALSE; | |
11301 | /* brlt, being SEC_LINKER_CREATED does not go through the | |
11302 | normal reloc processing. Symbols and offsets are not | |
11303 | translated from input file to output file form, so | |
11304 | set up the offset per the output file. */ | |
f94498ff AM |
11305 | r->r_offset = (br_entry->offset |
11306 | + htab->brlt->output_offset | |
11307 | + htab->brlt->output_section->vma); | |
11308 | r->r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
176a0d42 | 11309 | r->r_addend = dest; |
84f5d08e | 11310 | } |
84f5d08e | 11311 | } |
721956f4 | 11312 | |
176a0d42 AM |
11313 | dest = (br_entry->offset |
11314 | + htab->brlt->output_offset | |
11315 | + htab->brlt->output_section->vma); | |
11316 | ||
11317 | off = (dest | |
06bcf541 | 11318 | - elf_gp (info->output_bfd) |
6f20ed8a | 11319 | - htab->sec_info[stub_entry->group->link_sec->id].toc_off); |
721956f4 | 11320 | |
ad8e1ba5 | 11321 | if (off + 0x80008000 > 0xffffffff || (off & 7) != 0) |
5d1634d7 | 11322 | { |
25f53a85 | 11323 | info->callbacks->einfo |
c1c8c1ef | 11324 | (_("%P: linkage table error against `%pT'\n"), |
721956f4 | 11325 | stub_entry->root.string); |
5d1634d7 | 11326 | bfd_set_error (bfd_error_bad_value); |
b34976b6 AM |
11327 | htab->stub_error = TRUE; |
11328 | return FALSE; | |
5d1634d7 | 11329 | } |
41bd81ab | 11330 | |
176a0d42 AM |
11331 | if (info->emitrelocations) |
11332 | { | |
6f20ed8a | 11333 | r = get_relocs (stub_entry->group->stub_sec, 1 + (PPC_HA (off) != 0)); |
176a0d42 AM |
11334 | if (r == NULL) |
11335 | return FALSE; | |
6f20ed8a | 11336 | r[0].r_offset = loc - stub_entry->group->stub_sec->contents; |
7cfbafbc AM |
11337 | if (bfd_big_endian (info->output_bfd)) |
11338 | r[0].r_offset += 2; | |
00f412ee | 11339 | if (stub_entry->stub_type == ppc_stub_plt_branch_r2off) |
176a0d42 AM |
11340 | r[0].r_offset += 4; |
11341 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); | |
11342 | r[0].r_addend = dest; | |
11343 | if (PPC_HA (off) != 0) | |
11344 | { | |
11345 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA); | |
11346 | r[1].r_offset = r[0].r_offset + 4; | |
11347 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); | |
11348 | r[1].r_addend = r[0].r_addend; | |
11349 | } | |
11350 | } | |
11351 | ||
9e390558 | 11352 | p = loc; |
00f412ee | 11353 | if (stub_entry->stub_type != ppc_stub_plt_branch_r2off) |
ad8e1ba5 | 11354 | { |
176a0d42 | 11355 | if (PPC_HA (off) != 0) |
ac2df442 | 11356 | { |
e7d1c40c | 11357 | bfd_put_32 (htab->params->stub_bfd, |
9e390558 AM |
11358 | ADDIS_R12_R2 | PPC_HA (off), p); |
11359 | p += 4; | |
e7d1c40c | 11360 | bfd_put_32 (htab->params->stub_bfd, |
9e390558 | 11361 | LD_R12_0R12 | PPC_LO (off), p); |
ac2df442 AM |
11362 | } |
11363 | else | |
9e390558 AM |
11364 | bfd_put_32 (htab->params->stub_bfd, |
11365 | LD_R12_0R2 | PPC_LO (off), p); | |
ad8e1ba5 AM |
11366 | } |
11367 | else | |
11368 | { | |
25f53a85 | 11369 | bfd_vma r2off = get_r2off (info, stub_entry); |
aa374f67 | 11370 | |
a7c49797 | 11371 | if (r2off == (bfd_vma) -1) |
aa374f67 AM |
11372 | { |
11373 | htab->stub_error = TRUE; | |
11374 | return FALSE; | |
11375 | } | |
ad8e1ba5 | 11376 | |
9e390558 AM |
11377 | bfd_put_32 (htab->params->stub_bfd, STD_R2_0R1 + STK_TOC (htab), p); |
11378 | p += 4; | |
176a0d42 | 11379 | if (PPC_HA (off) != 0) |
ac2df442 | 11380 | { |
e7d1c40c | 11381 | bfd_put_32 (htab->params->stub_bfd, |
9e390558 AM |
11382 | ADDIS_R12_R2 | PPC_HA (off), p); |
11383 | p += 4; | |
e7d1c40c | 11384 | bfd_put_32 (htab->params->stub_bfd, |
9e390558 | 11385 | LD_R12_0R12 | PPC_LO (off), p); |
ac2df442 AM |
11386 | } |
11387 | else | |
9e390558 | 11388 | bfd_put_32 (htab->params->stub_bfd, LD_R12_0R2 | PPC_LO (off), p); |
ac2df442 AM |
11389 | |
11390 | if (PPC_HA (r2off) != 0) | |
11391 | { | |
9e390558 | 11392 | p += 4; |
e7d1c40c | 11393 | bfd_put_32 (htab->params->stub_bfd, |
9e390558 | 11394 | ADDIS_R2_R2 | PPC_HA (r2off), p); |
00f412ee AM |
11395 | } |
11396 | if (PPC_LO (r2off) != 0) | |
11397 | { | |
9e390558 | 11398 | p += 4; |
e7d1c40c | 11399 | bfd_put_32 (htab->params->stub_bfd, |
9e390558 | 11400 | ADDI_R2_R2 | PPC_LO (r2off), p); |
ac2df442 | 11401 | } |
ad8e1ba5 | 11402 | } |
9e390558 AM |
11403 | p += 4; |
11404 | bfd_put_32 (htab->params->stub_bfd, MTCTR_R12, p); | |
11405 | p += 4; | |
407aa07c AM |
11406 | bfd_put_32 (htab->params->stub_bfd, BCTR, p); |
11407 | p += 4; | |
721956f4 | 11408 | break; |
5d1634d7 | 11409 | |
721956f4 | 11410 | case ppc_stub_plt_call: |
794e51c0 | 11411 | case ppc_stub_plt_call_r2save: |
e054468f | 11412 | if (stub_entry->h != NULL |
b31867b6 AM |
11413 | && stub_entry->h->is_func_descriptor |
11414 | && stub_entry->h->oh != NULL) | |
c862ae31 | 11415 | { |
b31867b6 AM |
11416 | struct ppc_link_hash_entry *fh = ppc_follow_link (stub_entry->h->oh); |
11417 | ||
11418 | /* If the old-ABI "dot-symbol" is undefined make it weak so | |
6f20ed8a | 11419 | we don't get a link error from RELOC_FOR_GLOBAL_SYMBOL. */ |
8c5b4e52 AM |
11420 | if (fh->elf.root.type == bfd_link_hash_undefined |
11421 | && (stub_entry->h->elf.root.type == bfd_link_hash_defined | |
11422 | || stub_entry->h->elf.root.type == bfd_link_hash_defweak)) | |
b31867b6 | 11423 | fh->elf.root.type = bfd_link_hash_undefweak; |
c862ae31 AM |
11424 | } |
11425 | ||
721956f4 | 11426 | /* Now build the stub. */ |
e054468f | 11427 | dest = stub_entry->plt_ent->plt.offset & ~1; |
176a0d42 | 11428 | if (dest >= (bfd_vma) -2) |
721956f4 AM |
11429 | abort (); |
11430 | ||
33e44f2e | 11431 | plt = htab->elf.splt; |
25f23106 AM |
11432 | if (!htab->elf.dynamic_sections_created |
11433 | || stub_entry->h == NULL | |
11434 | || stub_entry->h->elf.dynindx == -1) | |
2d7ad24e AM |
11435 | { |
11436 | if (stub_entry->symtype == STT_GNU_IFUNC) | |
11437 | plt = htab->elf.iplt; | |
11438 | else | |
11439 | plt = htab->pltlocal; | |
11440 | } | |
e054468f AM |
11441 | |
11442 | dest += plt->output_offset + plt->output_section->vma; | |
11443 | ||
176a0d42 | 11444 | off = (dest |
06bcf541 | 11445 | - elf_gp (info->output_bfd) |
6f20ed8a | 11446 | - htab->sec_info[stub_entry->group->link_sec->id].toc_off); |
721956f4 | 11447 | |
ad8e1ba5 | 11448 | if (off + 0x80008000 > 0xffffffff || (off & 7) != 0) |
721956f4 | 11449 | { |
25f53a85 | 11450 | info->callbacks->einfo |
695344c0 | 11451 | /* xgettext:c-format */ |
c1c8c1ef | 11452 | (_("%P: linkage table error against `%pT'\n"), |
e054468f AM |
11453 | stub_entry->h != NULL |
11454 | ? stub_entry->h->elf.root.root.string | |
11455 | : "<local sym>"); | |
721956f4 | 11456 | bfd_set_error (bfd_error_bad_value); |
b34976b6 AM |
11457 | htab->stub_error = TRUE; |
11458 | return FALSE; | |
721956f4 AM |
11459 | } |
11460 | ||
e7d1c40c | 11461 | if (htab->params->plt_stub_align != 0) |
794e51c0 AM |
11462 | { |
11463 | unsigned pad = plt_stub_pad (htab, stub_entry, off); | |
11464 | ||
6f20ed8a AM |
11465 | stub_entry->group->stub_sec->size += pad; |
11466 | stub_entry->stub_offset = stub_entry->group->stub_sec->size; | |
794e51c0 AM |
11467 | loc += pad; |
11468 | } | |
11469 | ||
176a0d42 AM |
11470 | r = NULL; |
11471 | if (info->emitrelocations) | |
11472 | { | |
6f20ed8a | 11473 | r = get_relocs (stub_entry->group->stub_sec, |
3ba720c7 AM |
11474 | ((PPC_HA (off) != 0) |
11475 | + (htab->opd_abi | |
e7d1c40c | 11476 | ? 2 + (htab->params->plt_static_chain |
3ba720c7 AM |
11477 | && PPC_HA (off + 16) == PPC_HA (off)) |
11478 | : 1))); | |
176a0d42 AM |
11479 | if (r == NULL) |
11480 | return FALSE; | |
6f20ed8a | 11481 | r[0].r_offset = loc - stub_entry->group->stub_sec->contents; |
7cfbafbc AM |
11482 | if (bfd_big_endian (info->output_bfd)) |
11483 | r[0].r_offset += 2; | |
176a0d42 AM |
11484 | r[0].r_addend = dest; |
11485 | } | |
a7f2871e AM |
11486 | if (stub_entry->h != NULL |
11487 | && (stub_entry->h == htab->tls_get_addr_fd | |
11488 | || stub_entry->h == htab->tls_get_addr) | |
7c9cf415 | 11489 | && htab->params->tls_get_addr_opt) |
794e51c0 | 11490 | p = build_tls_get_addr_stub (htab, stub_entry, loc, off, r); |
a7f2871e | 11491 | else |
794e51c0 | 11492 | p = build_plt_stub (htab, stub_entry, loc, off, r); |
721956f4 AM |
11493 | break; |
11494 | ||
a4b6fadd AM |
11495 | case ppc_stub_save_res: |
11496 | return TRUE; | |
11497 | ||
721956f4 AM |
11498 | default: |
11499 | BFD_FAIL (); | |
b34976b6 | 11500 | return FALSE; |
721956f4 AM |
11501 | } |
11502 | ||
9e390558 | 11503 | stub_entry->group->stub_sec->size += p - loc; |
97b639ba | 11504 | |
e7d1c40c | 11505 | if (htab->params->emit_stub_syms) |
97b639ba AM |
11506 | { |
11507 | struct elf_link_hash_entry *h; | |
ee75fd95 AM |
11508 | size_t len1, len2; |
11509 | char *name; | |
11510 | const char *const stub_str[] = { "long_branch", | |
11511 | "long_branch_r2off", | |
11512 | "plt_branch", | |
11513 | "plt_branch_r2off", | |
794e51c0 | 11514 | "plt_call", |
ee75fd95 AM |
11515 | "plt_call" }; |
11516 | ||
11517 | len1 = strlen (stub_str[stub_entry->stub_type - 1]); | |
11518 | len2 = strlen (stub_entry->root.string); | |
11519 | name = bfd_malloc (len1 + len2 + 2); | |
11520 | if (name == NULL) | |
11521 | return FALSE; | |
11522 | memcpy (name, stub_entry->root.string, 9); | |
11523 | memcpy (name + 9, stub_str[stub_entry->stub_type - 1], len1); | |
11524 | memcpy (name + len1 + 9, stub_entry->root.string + 8, len2 - 8 + 1); | |
11525 | h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE); | |
97b639ba AM |
11526 | if (h == NULL) |
11527 | return FALSE; | |
11528 | if (h->root.type == bfd_link_hash_new) | |
11529 | { | |
11530 | h->root.type = bfd_link_hash_defined; | |
6f20ed8a | 11531 | h->root.u.def.section = stub_entry->group->stub_sec; |
97b639ba | 11532 | h->root.u.def.value = stub_entry->stub_offset; |
f5385ebf AM |
11533 | h->ref_regular = 1; |
11534 | h->def_regular = 1; | |
11535 | h->ref_regular_nonweak = 1; | |
11536 | h->forced_local = 1; | |
11537 | h->non_elf = 0; | |
2ec55de3 | 11538 | h->root.linker_def = 1; |
97b639ba AM |
11539 | } |
11540 | } | |
11541 | ||
b34976b6 | 11542 | return TRUE; |
721956f4 AM |
11543 | } |
11544 | ||
11545 | /* As above, but don't actually build the stub. Just bump offset so | |
11546 | we know stub section sizes, and select plt_branch stubs where | |
11547 | long_branch stubs won't do. */ | |
11548 | ||
b34976b6 | 11549 | static bfd_boolean |
4ce794b7 | 11550 | ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg) |
721956f4 AM |
11551 | { |
11552 | struct ppc_stub_hash_entry *stub_entry; | |
63bc6f6c | 11553 | struct bfd_link_info *info; |
721956f4 AM |
11554 | struct ppc_link_hash_table *htab; |
11555 | bfd_vma off; | |
11556 | int size; | |
11557 | ||
11558 | /* Massage our args to the form they really have. */ | |
11559 | stub_entry = (struct ppc_stub_hash_entry *) gen_entry; | |
63bc6f6c AM |
11560 | info = in_arg; |
11561 | ||
11562 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
11563 | if (htab == NULL) |
11564 | return FALSE; | |
721956f4 | 11565 | |
a4b6fadd AM |
11566 | if (stub_entry->h != NULL |
11567 | && stub_entry->h->save_res | |
11568 | && stub_entry->h->elf.root.type == bfd_link_hash_defined | |
11569 | && stub_entry->h->elf.root.u.def.section == htab->sfpr) | |
11570 | { | |
11571 | /* Don't make stubs to out-of-line register save/restore | |
11572 | functions. Instead, emit copies of the functions. */ | |
11573 | stub_entry->group->needs_save_res = 1; | |
11574 | stub_entry->stub_type = ppc_stub_save_res; | |
11575 | return TRUE; | |
11576 | } | |
11577 | ||
794e51c0 AM |
11578 | if (stub_entry->stub_type == ppc_stub_plt_call |
11579 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
721956f4 | 11580 | { |
e054468f AM |
11581 | asection *plt; |
11582 | off = stub_entry->plt_ent->plt.offset & ~(bfd_vma) 1; | |
58ac9f71 | 11583 | if (off >= (bfd_vma) -2) |
411e1bfb | 11584 | abort (); |
33e44f2e | 11585 | plt = htab->elf.splt; |
25f23106 AM |
11586 | if (!htab->elf.dynamic_sections_created |
11587 | || stub_entry->h == NULL | |
11588 | || stub_entry->h->elf.dynindx == -1) | |
2d7ad24e AM |
11589 | { |
11590 | if (stub_entry->symtype == STT_GNU_IFUNC) | |
11591 | plt = htab->elf.iplt; | |
11592 | else | |
11593 | plt = htab->pltlocal; | |
11594 | } | |
e054468f AM |
11595 | off += (plt->output_offset |
11596 | + plt->output_section->vma | |
06bcf541 | 11597 | - elf_gp (info->output_bfd) |
6f20ed8a | 11598 | - htab->sec_info[stub_entry->group->link_sec->id].toc_off); |
721956f4 | 11599 | |
794e51c0 | 11600 | size = plt_stub_size (htab, stub_entry, off); |
d4aaa2a0 AM |
11601 | if (stub_entry->h != NULL |
11602 | && (stub_entry->h == htab->tls_get_addr_fd | |
11603 | || stub_entry->h == htab->tls_get_addr) | |
11604 | && htab->params->tls_get_addr_opt | |
11605 | && (ALWAYS_EMIT_R2SAVE | |
11606 | || stub_entry->stub_type == ppc_stub_plt_call_r2save)) | |
11607 | stub_entry->group->tls_get_addr_opt_bctrl | |
11608 | = stub_entry->group->stub_sec->size + size - 5 * 4; | |
11609 | ||
e7d1c40c | 11610 | if (htab->params->plt_stub_align) |
794e51c0 | 11611 | size += plt_stub_pad (htab, stub_entry, off); |
176a0d42 AM |
11612 | if (info->emitrelocations) |
11613 | { | |
6f20ed8a | 11614 | stub_entry->group->stub_sec->reloc_count |
b9e5796b AM |
11615 | += ((PPC_HA (off) != 0) |
11616 | + (htab->opd_abi | |
e7d1c40c | 11617 | ? 2 + (htab->params->plt_static_chain |
b9e5796b AM |
11618 | && PPC_HA (off + 16) == PPC_HA (off)) |
11619 | : 1)); | |
6f20ed8a | 11620 | stub_entry->group->stub_sec->flags |= SEC_RELOC; |
176a0d42 | 11621 | } |
721956f4 AM |
11622 | } |
11623 | else | |
11624 | { | |
ad8e1ba5 AM |
11625 | /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off |
11626 | variants. */ | |
ac2df442 | 11627 | bfd_vma r2off = 0; |
6911b7dc | 11628 | bfd_vma local_off = 0; |
ac2df442 | 11629 | |
721956f4 AM |
11630 | off = (stub_entry->target_value |
11631 | + stub_entry->target_section->output_offset | |
11632 | + stub_entry->target_section->output_section->vma); | |
6f20ed8a AM |
11633 | off -= (stub_entry->group->stub_sec->size |
11634 | + stub_entry->group->stub_sec->output_offset | |
11635 | + stub_entry->group->stub_sec->output_section->vma); | |
721956f4 | 11636 | |
ad8e1ba5 AM |
11637 | /* Reset the stub type from the plt variant in case we now |
11638 | can reach with a shorter stub. */ | |
11639 | if (stub_entry->stub_type >= ppc_stub_plt_branch) | |
11640 | stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch; | |
11641 | ||
11642 | size = 4; | |
11643 | if (stub_entry->stub_type == ppc_stub_long_branch_r2off) | |
11644 | { | |
25f53a85 | 11645 | r2off = get_r2off (info, stub_entry); |
a7c49797 | 11646 | if (r2off == (bfd_vma) -1) |
aa374f67 AM |
11647 | { |
11648 | htab->stub_error = TRUE; | |
11649 | return FALSE; | |
11650 | } | |
a7c49797 | 11651 | size = 8; |
ac2df442 | 11652 | if (PPC_HA (r2off) != 0) |
a7c49797 AM |
11653 | size += 4; |
11654 | if (PPC_LO (r2off) != 0) | |
11655 | size += 4; | |
ac2df442 | 11656 | off -= size - 4; |
ad8e1ba5 AM |
11657 | } |
11658 | ||
6911b7dc AM |
11659 | local_off = PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other); |
11660 | ||
6a3858a6 | 11661 | /* If the branch offset is too big, use a ppc_stub_plt_branch. |
b9e5796b AM |
11662 | Do the same for -R objects without function descriptors. */ |
11663 | if (off + (1 << 25) >= (bfd_vma) (1 << 26) - local_off | |
11664 | || (stub_entry->stub_type == ppc_stub_long_branch_r2off | |
a7c49797 AM |
11665 | && r2off == 0 |
11666 | && htab->sec_info[stub_entry->target_section->id].toc_off == 0)) | |
721956f4 AM |
11667 | { |
11668 | struct ppc_branch_hash_entry *br_entry; | |
11669 | ||
11670 | br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table, | |
11671 | stub_entry->root.string + 9, | |
b34976b6 | 11672 | TRUE, FALSE); |
721956f4 AM |
11673 | if (br_entry == NULL) |
11674 | { | |
cf97bcb0 AM |
11675 | _bfd_error_handler (_("can't build branch stub `%s'"), |
11676 | stub_entry->root.string); | |
b34976b6 AM |
11677 | htab->stub_error = TRUE; |
11678 | return FALSE; | |
721956f4 AM |
11679 | } |
11680 | ||
11681 | if (br_entry->iter != htab->stub_iteration) | |
11682 | { | |
11683 | br_entry->iter = htab->stub_iteration; | |
eea6121a AM |
11684 | br_entry->offset = htab->brlt->size; |
11685 | htab->brlt->size += 8; | |
63bc6f6c | 11686 | |
ee75fd95 | 11687 | if (htab->relbrlt != NULL) |
eea6121a | 11688 | htab->relbrlt->size += sizeof (Elf64_External_Rela); |
84f5d08e AM |
11689 | else if (info->emitrelocations) |
11690 | { | |
11691 | htab->brlt->reloc_count += 1; | |
11692 | htab->brlt->flags |= SEC_RELOC; | |
11693 | } | |
721956f4 | 11694 | } |
ad8e1ba5 AM |
11695 | |
11696 | stub_entry->stub_type += ppc_stub_plt_branch - ppc_stub_long_branch; | |
ac2df442 AM |
11697 | off = (br_entry->offset |
11698 | + htab->brlt->output_offset | |
11699 | + htab->brlt->output_section->vma | |
06bcf541 | 11700 | - elf_gp (info->output_bfd) |
6f20ed8a | 11701 | - htab->sec_info[stub_entry->group->link_sec->id].toc_off); |
ac2df442 | 11702 | |
176a0d42 AM |
11703 | if (info->emitrelocations) |
11704 | { | |
6f20ed8a AM |
11705 | stub_entry->group->stub_sec->reloc_count |
11706 | += 1 + (PPC_HA (off) != 0); | |
11707 | stub_entry->group->stub_sec->flags |= SEC_RELOC; | |
176a0d42 AM |
11708 | } |
11709 | ||
00f412ee | 11710 | if (stub_entry->stub_type != ppc_stub_plt_branch_r2off) |
ac2df442 AM |
11711 | { |
11712 | size = 12; | |
176a0d42 | 11713 | if (PPC_HA (off) != 0) |
ac2df442 AM |
11714 | size = 16; |
11715 | } | |
11716 | else | |
11717 | { | |
00f412ee | 11718 | size = 16; |
176a0d42 | 11719 | if (PPC_HA (off) != 0) |
ac2df442 AM |
11720 | size += 4; |
11721 | ||
11722 | if (PPC_HA (r2off) != 0) | |
11723 | size += 4; | |
00f412ee AM |
11724 | if (PPC_LO (r2off) != 0) |
11725 | size += 4; | |
ac2df442 | 11726 | } |
721956f4 | 11727 | } |
84f5d08e AM |
11728 | else if (info->emitrelocations) |
11729 | { | |
6f20ed8a AM |
11730 | stub_entry->group->stub_sec->reloc_count += 1; |
11731 | stub_entry->group->stub_sec->flags |= SEC_RELOC; | |
84f5d08e | 11732 | } |
721956f4 AM |
11733 | } |
11734 | ||
6f20ed8a | 11735 | stub_entry->group->stub_sec->size += size; |
b34976b6 | 11736 | return TRUE; |
721956f4 AM |
11737 | } |
11738 | ||
11739 | /* Set up various things so that we can make a list of input sections | |
11740 | for each output section included in the link. Returns -1 on error, | |
cedb70c5 | 11741 | 0 when no stubs will be needed, and 1 on success. */ |
721956f4 AM |
11742 | |
11743 | int | |
e7d1c40c | 11744 | ppc64_elf_setup_section_lists (struct bfd_link_info *info) |
721956f4 | 11745 | { |
6f20ed8a | 11746 | unsigned int id; |
721956f4 AM |
11747 | bfd_size_type amt; |
11748 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
11749 | ||
4dfe6ac6 NC |
11750 | if (htab == NULL) |
11751 | return -1; | |
4c52953f | 11752 | |
6f20ed8a AM |
11753 | htab->sec_info_arr_size = bfd_get_next_section_id (); |
11754 | amt = sizeof (*htab->sec_info) * (htab->sec_info_arr_size); | |
11755 | htab->sec_info = bfd_zmalloc (amt); | |
11756 | if (htab->sec_info == NULL) | |
721956f4 AM |
11757 | return -1; |
11758 | ||
3d6f9012 AM |
11759 | /* Set toc_off for com, und, abs and ind sections. */ |
11760 | for (id = 0; id < 3; id++) | |
6f20ed8a | 11761 | htab->sec_info[id].toc_off = TOC_BASE_OFF; |
734b6cf9 | 11762 | |
721956f4 AM |
11763 | return 1; |
11764 | } | |
11765 | ||
927be08e AM |
11766 | /* Set up for first pass at multitoc partitioning. */ |
11767 | ||
11768 | void | |
11769 | ppc64_elf_start_multitoc_partition (struct bfd_link_info *info) | |
11770 | { | |
11771 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
11772 | ||
1c865ab2 | 11773 | htab->toc_curr = ppc64_elf_set_toc (info, info->output_bfd); |
927be08e AM |
11774 | htab->toc_bfd = NULL; |
11775 | htab->toc_first_sec = NULL; | |
11776 | } | |
11777 | ||
e717da7e AM |
11778 | /* The linker repeatedly calls this function for each TOC input section |
11779 | and linker generated GOT section. Group input bfds such that the toc | |
927be08e | 11780 | within a group is less than 64k in size. */ |
ad8e1ba5 | 11781 | |
927be08e | 11782 | bfd_boolean |
4ce794b7 | 11783 | ppc64_elf_next_toc_section (struct bfd_link_info *info, asection *isec) |
ad8e1ba5 AM |
11784 | { |
11785 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
d77c8a4b | 11786 | bfd_vma addr, off, limit; |
ad8e1ba5 | 11787 | |
4dfe6ac6 NC |
11788 | if (htab == NULL) |
11789 | return FALSE; | |
11790 | ||
927be08e | 11791 | if (!htab->second_toc_pass) |
4c52953f | 11792 | { |
927be08e | 11793 | /* Keep track of the first .toc or .got section for this input bfd. */ |
a4fd3de5 AM |
11794 | bfd_boolean new_bfd = htab->toc_bfd != isec->owner; |
11795 | ||
11796 | if (new_bfd) | |
bf102f86 AM |
11797 | { |
11798 | htab->toc_bfd = isec->owner; | |
11799 | htab->toc_first_sec = isec; | |
11800 | } | |
927be08e | 11801 | |
bf102f86 AM |
11802 | addr = isec->output_offset + isec->output_section->vma; |
11803 | off = addr - htab->toc_curr; | |
d77c8a4b AM |
11804 | limit = 0x80008000; |
11805 | if (ppc64_elf_tdata (isec->owner)->has_small_toc_reloc) | |
11806 | limit = 0x10000; | |
11807 | if (off + isec->size > limit) | |
bf102f86 AM |
11808 | { |
11809 | addr = (htab->toc_first_sec->output_offset | |
11810 | + htab->toc_first_sec->output_section->vma); | |
11811 | htab->toc_curr = addr; | |
a27e685f | 11812 | htab->toc_curr &= -TOC_BASE_ALIGN; |
bf102f86 | 11813 | } |
99877b66 | 11814 | |
927be08e AM |
11815 | /* toc_curr is the base address of this toc group. Set elf_gp |
11816 | for the input section to be the offset relative to the | |
11817 | output toc base plus 0x8000. Making the input elf_gp an | |
11818 | offset allows us to move the toc as a whole without | |
11819 | recalculating input elf_gp. */ | |
06bcf541 | 11820 | off = htab->toc_curr - elf_gp (info->output_bfd); |
927be08e AM |
11821 | off += TOC_BASE_OFF; |
11822 | ||
11823 | /* Die if someone uses a linker script that doesn't keep input | |
11824 | file .toc and .got together. */ | |
a4fd3de5 AM |
11825 | if (new_bfd |
11826 | && elf_gp (isec->owner) != 0 | |
927be08e AM |
11827 | && elf_gp (isec->owner) != off) |
11828 | return FALSE; | |
11829 | ||
11830 | elf_gp (isec->owner) = off; | |
11831 | return TRUE; | |
4c52953f | 11832 | } |
927be08e AM |
11833 | |
11834 | /* During the second pass toc_first_sec points to the start of | |
11835 | a toc group, and toc_curr is used to track the old elf_gp. | |
11836 | We use toc_bfd to ensure we only look at each bfd once. */ | |
11837 | if (htab->toc_bfd == isec->owner) | |
11838 | return TRUE; | |
11839 | htab->toc_bfd = isec->owner; | |
11840 | ||
11841 | if (htab->toc_first_sec == NULL | |
11842 | || htab->toc_curr != elf_gp (isec->owner)) | |
11843 | { | |
11844 | htab->toc_curr = elf_gp (isec->owner); | |
11845 | htab->toc_first_sec = isec; | |
11846 | } | |
11847 | addr = (htab->toc_first_sec->output_offset | |
11848 | + htab->toc_first_sec->output_section->vma); | |
06bcf541 | 11849 | off = addr - elf_gp (info->output_bfd) + TOC_BASE_OFF; |
927be08e AM |
11850 | elf_gp (isec->owner) = off; |
11851 | ||
11852 | return TRUE; | |
ad8e1ba5 AM |
11853 | } |
11854 | ||
927be08e AM |
11855 | /* Called via elf_link_hash_traverse to merge GOT entries for global |
11856 | symbol H. */ | |
11857 | ||
11858 | static bfd_boolean | |
11859 | merge_global_got (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED) | |
11860 | { | |
11861 | if (h->root.type == bfd_link_hash_indirect) | |
11862 | return TRUE; | |
11863 | ||
927be08e AM |
11864 | merge_got_entries (&h->got.glist); |
11865 | ||
11866 | return TRUE; | |
11867 | } | |
11868 | ||
11869 | /* Called via elf_link_hash_traverse to allocate GOT entries for global | |
11870 | symbol H. */ | |
11871 | ||
11872 | static bfd_boolean | |
11873 | reallocate_got (struct elf_link_hash_entry *h, void *inf) | |
11874 | { | |
11875 | struct got_entry *gent; | |
11876 | ||
11877 | if (h->root.type == bfd_link_hash_indirect) | |
11878 | return TRUE; | |
11879 | ||
927be08e AM |
11880 | for (gent = h->got.glist; gent != NULL; gent = gent->next) |
11881 | if (!gent->is_indirect) | |
11882 | allocate_got (h, (struct bfd_link_info *) inf, gent); | |
11883 | return TRUE; | |
11884 | } | |
11885 | ||
11886 | /* Called on the first multitoc pass after the last call to | |
11887 | ppc64_elf_next_toc_section. This function removes duplicate GOT | |
11888 | entries. */ | |
11889 | ||
11890 | bfd_boolean | |
11891 | ppc64_elf_layout_multitoc (struct bfd_link_info *info) | |
ad8e1ba5 AM |
11892 | { |
11893 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
927be08e AM |
11894 | struct bfd *ibfd, *ibfd2; |
11895 | bfd_boolean done_something; | |
11896 | ||
11897 | htab->multi_toc_needed = htab->toc_curr != elf_gp (info->output_bfd); | |
ad8e1ba5 | 11898 | |
7865406b AM |
11899 | if (!htab->do_multi_toc) |
11900 | return FALSE; | |
11901 | ||
d0fae19d | 11902 | /* Merge global sym got entries within a toc group. */ |
927be08e AM |
11903 | elf_link_hash_traverse (&htab->elf, merge_global_got, info); |
11904 | ||
11905 | /* And tlsld_got. */ | |
c72f2fb2 | 11906 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
927be08e AM |
11907 | { |
11908 | struct got_entry *ent, *ent2; | |
11909 | ||
11910 | if (!is_ppc64_elf (ibfd)) | |
11911 | continue; | |
11912 | ||
11913 | ent = ppc64_tlsld_got (ibfd); | |
11914 | if (!ent->is_indirect | |
11915 | && ent->got.offset != (bfd_vma) -1) | |
11916 | { | |
c72f2fb2 | 11917 | for (ibfd2 = ibfd->link.next; ibfd2 != NULL; ibfd2 = ibfd2->link.next) |
927be08e AM |
11918 | { |
11919 | if (!is_ppc64_elf (ibfd2)) | |
11920 | continue; | |
11921 | ||
11922 | ent2 = ppc64_tlsld_got (ibfd2); | |
11923 | if (!ent2->is_indirect | |
11924 | && ent2->got.offset != (bfd_vma) -1 | |
11925 | && elf_gp (ibfd2) == elf_gp (ibfd)) | |
11926 | { | |
11927 | ent2->is_indirect = TRUE; | |
11928 | ent2->got.ent = ent; | |
11929 | } | |
11930 | } | |
11931 | } | |
11932 | } | |
11933 | ||
11934 | /* Zap sizes of got sections. */ | |
33e44f2e AM |
11935 | htab->elf.irelplt->rawsize = htab->elf.irelplt->size; |
11936 | htab->elf.irelplt->size -= htab->got_reli_size; | |
927be08e AM |
11937 | htab->got_reli_size = 0; |
11938 | ||
c72f2fb2 | 11939 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
927be08e AM |
11940 | { |
11941 | asection *got, *relgot; | |
11942 | ||
11943 | if (!is_ppc64_elf (ibfd)) | |
11944 | continue; | |
11945 | ||
11946 | got = ppc64_elf_tdata (ibfd)->got; | |
11947 | if (got != NULL) | |
11948 | { | |
11949 | got->rawsize = got->size; | |
11950 | got->size = 0; | |
11951 | relgot = ppc64_elf_tdata (ibfd)->relgot; | |
11952 | relgot->rawsize = relgot->size; | |
11953 | relgot->size = 0; | |
11954 | } | |
11955 | } | |
11956 | ||
11957 | /* Now reallocate the got, local syms first. We don't need to | |
11958 | allocate section contents again since we never increase size. */ | |
c72f2fb2 | 11959 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
927be08e AM |
11960 | { |
11961 | struct got_entry **lgot_ents; | |
11962 | struct got_entry **end_lgot_ents; | |
11963 | struct plt_entry **local_plt; | |
11964 | struct plt_entry **end_local_plt; | |
f961d9dd | 11965 | unsigned char *lgot_masks; |
927be08e AM |
11966 | bfd_size_type locsymcount; |
11967 | Elf_Internal_Shdr *symtab_hdr; | |
19e08130 | 11968 | asection *s; |
927be08e AM |
11969 | |
11970 | if (!is_ppc64_elf (ibfd)) | |
11971 | continue; | |
11972 | ||
11973 | lgot_ents = elf_local_got_ents (ibfd); | |
11974 | if (!lgot_ents) | |
11975 | continue; | |
11976 | ||
11977 | symtab_hdr = &elf_symtab_hdr (ibfd); | |
11978 | locsymcount = symtab_hdr->sh_info; | |
11979 | end_lgot_ents = lgot_ents + locsymcount; | |
11980 | local_plt = (struct plt_entry **) end_lgot_ents; | |
11981 | end_local_plt = local_plt + locsymcount; | |
f961d9dd | 11982 | lgot_masks = (unsigned char *) end_local_plt; |
927be08e | 11983 | s = ppc64_elf_tdata (ibfd)->got; |
927be08e AM |
11984 | for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks) |
11985 | { | |
11986 | struct got_entry *ent; | |
11987 | ||
11988 | for (ent = *lgot_ents; ent != NULL; ent = ent->next) | |
d0fae19d | 11989 | { |
19e08130 AM |
11990 | unsigned int ent_size = 8; |
11991 | unsigned int rel_size = sizeof (Elf64_External_Rela); | |
11992 | ||
d0fae19d AM |
11993 | ent->got.offset = s->size; |
11994 | if ((ent->tls_type & *lgot_masks & TLS_GD) != 0) | |
d0fae19d | 11995 | { |
19e08130 AM |
11996 | ent_size *= 2; |
11997 | rel_size *= 2; | |
11998 | } | |
11999 | s->size += ent_size; | |
37da22e5 | 12000 | if ((*lgot_masks & (TLS_TLS | PLT_IFUNC)) == PLT_IFUNC) |
19e08130 | 12001 | { |
33e44f2e | 12002 | htab->elf.irelplt->size += rel_size; |
19e08130 AM |
12003 | htab->got_reli_size += rel_size; |
12004 | } | |
6a3858a6 AM |
12005 | else if (bfd_link_pic (info) |
12006 | && !((ent->tls_type & TLS_TPREL) != 0 | |
12007 | && bfd_link_executable (info))) | |
19e08130 AM |
12008 | { |
12009 | asection *srel = ppc64_elf_tdata (ibfd)->relgot; | |
12010 | srel->size += rel_size; | |
d0fae19d AM |
12011 | } |
12012 | } | |
927be08e AM |
12013 | } |
12014 | } | |
12015 | ||
12016 | elf_link_hash_traverse (&htab->elf, reallocate_got, info); | |
12017 | ||
c72f2fb2 | 12018 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
927be08e AM |
12019 | { |
12020 | struct got_entry *ent; | |
12021 | ||
12022 | if (!is_ppc64_elf (ibfd)) | |
12023 | continue; | |
12024 | ||
12025 | ent = ppc64_tlsld_got (ibfd); | |
12026 | if (!ent->is_indirect | |
12027 | && ent->got.offset != (bfd_vma) -1) | |
12028 | { | |
12029 | asection *s = ppc64_elf_tdata (ibfd)->got; | |
12030 | ent->got.offset = s->size; | |
12031 | s->size += 16; | |
0e1862bb | 12032 | if (bfd_link_pic (info)) |
927be08e AM |
12033 | { |
12034 | asection *srel = ppc64_elf_tdata (ibfd)->relgot; | |
12035 | srel->size += sizeof (Elf64_External_Rela); | |
12036 | } | |
12037 | } | |
12038 | } | |
12039 | ||
33e44f2e | 12040 | done_something = htab->elf.irelplt->rawsize != htab->elf.irelplt->size; |
927be08e | 12041 | if (!done_something) |
c72f2fb2 | 12042 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
927be08e AM |
12043 | { |
12044 | asection *got; | |
12045 | ||
12046 | if (!is_ppc64_elf (ibfd)) | |
12047 | continue; | |
12048 | ||
12049 | got = ppc64_elf_tdata (ibfd)->got; | |
12050 | if (got != NULL) | |
12051 | { | |
12052 | done_something = got->rawsize != got->size; | |
12053 | if (done_something) | |
12054 | break; | |
12055 | } | |
12056 | } | |
12057 | ||
12058 | if (done_something) | |
e7d1c40c | 12059 | (*htab->params->layout_sections_again) (); |
927be08e AM |
12060 | |
12061 | /* Set up for second pass over toc sections to recalculate elf_gp | |
12062 | on input sections. */ | |
12063 | htab->toc_bfd = NULL; | |
12064 | htab->toc_first_sec = NULL; | |
12065 | htab->second_toc_pass = TRUE; | |
12066 | return done_something; | |
12067 | } | |
12068 | ||
12069 | /* Called after second pass of multitoc partitioning. */ | |
12070 | ||
12071 | void | |
12072 | ppc64_elf_finish_multitoc_partition (struct bfd_link_info *info) | |
12073 | { | |
12074 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
12075 | ||
12076 | /* After the second pass, toc_curr tracks the TOC offset used | |
12077 | for code sections below in ppc64_elf_next_input_section. */ | |
3d6f9012 | 12078 | htab->toc_curr = TOC_BASE_OFF; |
ad8e1ba5 AM |
12079 | } |
12080 | ||
9b5ecbd0 AM |
12081 | /* No toc references were found in ISEC. If the code in ISEC makes no |
12082 | calls, then there's no need to use toc adjusting stubs when branching | |
12083 | into ISEC. Actually, indirect calls from ISEC are OK as they will | |
4c52953f AM |
12084 | load r2. Returns -1 on error, 0 for no stub needed, 1 for stub |
12085 | needed, and 2 if a cyclical call-graph was found but no other reason | |
12086 | for a stub was detected. If called from the top level, a return of | |
12087 | 2 means the same as a return of 0. */ | |
9b5ecbd0 AM |
12088 | |
12089 | static int | |
4ce794b7 | 12090 | toc_adjusting_stub_needed (struct bfd_link_info *info, asection *isec) |
9b5ecbd0 | 12091 | { |
9b5ecbd0 | 12092 | int ret; |
70cc837d AM |
12093 | |
12094 | /* Mark this section as checked. */ | |
12095 | isec->call_check_done = 1; | |
9b5ecbd0 | 12096 | |
772119ce AM |
12097 | /* We know none of our code bearing sections will need toc stubs. */ |
12098 | if ((isec->flags & SEC_LINKER_CREATED) != 0) | |
12099 | return 0; | |
12100 | ||
eea6121a | 12101 | if (isec->size == 0) |
082c50f8 AM |
12102 | return 0; |
12103 | ||
4c52953f AM |
12104 | if (isec->output_section == NULL) |
12105 | return 0; | |
12106 | ||
4c52953f | 12107 | ret = 0; |
70cc837d | 12108 | if (isec->reloc_count != 0) |
9b5ecbd0 | 12109 | { |
70cc837d AM |
12110 | Elf_Internal_Rela *relstart, *rel; |
12111 | Elf_Internal_Sym *local_syms; | |
12112 | struct ppc_link_hash_table *htab; | |
2917689a | 12113 | |
70cc837d AM |
12114 | relstart = _bfd_elf_link_read_relocs (isec->owner, isec, NULL, NULL, |
12115 | info->keep_memory); | |
12116 | if (relstart == NULL) | |
12117 | return -1; | |
90aecf7a | 12118 | |
70cc837d AM |
12119 | /* Look for branches to outside of this section. */ |
12120 | local_syms = NULL; | |
12121 | htab = ppc_hash_table (info); | |
12122 | if (htab == NULL) | |
12123 | return -1; | |
4c52953f | 12124 | |
70cc837d | 12125 | for (rel = relstart; rel < relstart + isec->reloc_count; ++rel) |
4c52953f | 12126 | { |
70cc837d AM |
12127 | enum elf_ppc64_reloc_type r_type; |
12128 | unsigned long r_symndx; | |
12129 | struct elf_link_hash_entry *h; | |
12130 | struct ppc_link_hash_entry *eh; | |
12131 | Elf_Internal_Sym *sym; | |
12132 | asection *sym_sec; | |
12133 | struct _opd_sec_data *opd; | |
12134 | bfd_vma sym_value; | |
12135 | bfd_vma dest; | |
12136 | ||
12137 | r_type = ELF64_R_TYPE (rel->r_info); | |
12138 | if (r_type != R_PPC64_REL24 | |
12139 | && r_type != R_PPC64_REL14 | |
12140 | && r_type != R_PPC64_REL14_BRTAKEN | |
23cedd1d AM |
12141 | && r_type != R_PPC64_REL14_BRNTAKEN |
12142 | && r_type != R_PPC64_PLTCALL) | |
70cc837d | 12143 | continue; |
4c52953f | 12144 | |
70cc837d AM |
12145 | r_symndx = ELF64_R_SYM (rel->r_info); |
12146 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, r_symndx, | |
12147 | isec->owner)) | |
4c52953f | 12148 | { |
70cc837d AM |
12149 | ret = -1; |
12150 | break; | |
12151 | } | |
4c52953f | 12152 | |
70cc837d AM |
12153 | /* Calls to dynamic lib functions go through a plt call stub |
12154 | that uses r2. */ | |
12155 | eh = (struct ppc_link_hash_entry *) h; | |
12156 | if (eh != NULL | |
12157 | && (eh->elf.plt.plist != NULL | |
12158 | || (eh->oh != NULL | |
12159 | && ppc_follow_link (eh->oh)->elf.plt.plist != NULL))) | |
12160 | { | |
12161 | ret = 1; | |
12162 | break; | |
4c52953f AM |
12163 | } |
12164 | ||
70cc837d AM |
12165 | if (sym_sec == NULL) |
12166 | /* Ignore other undefined symbols. */ | |
4c52953f | 12167 | continue; |
4c52953f | 12168 | |
70cc837d AM |
12169 | /* Assume branches to other sections not included in the |
12170 | link need stubs too, to cover -R and absolute syms. */ | |
12171 | if (sym_sec->output_section == NULL) | |
12172 | { | |
12173 | ret = 1; | |
12174 | break; | |
12175 | } | |
4c52953f | 12176 | |
70cc837d AM |
12177 | if (h == NULL) |
12178 | sym_value = sym->st_value; | |
12179 | else | |
12180 | { | |
12181 | if (h->root.type != bfd_link_hash_defined | |
12182 | && h->root.type != bfd_link_hash_defweak) | |
12183 | abort (); | |
12184 | sym_value = h->root.u.def.value; | |
12185 | } | |
12186 | sym_value += rel->r_addend; | |
4c52953f | 12187 | |
70cc837d AM |
12188 | /* If this branch reloc uses an opd sym, find the code section. */ |
12189 | opd = get_opd_info (sym_sec); | |
12190 | if (opd != NULL) | |
12191 | { | |
12192 | if (h == NULL && opd->adjust != NULL) | |
12193 | { | |
12194 | long adjust; | |
4c52953f | 12195 | |
92a9c616 | 12196 | adjust = opd->adjust[OPD_NDX (sym_value)]; |
70cc837d AM |
12197 | if (adjust == -1) |
12198 | /* Assume deleted functions won't ever be called. */ | |
12199 | continue; | |
12200 | sym_value += adjust; | |
12201 | } | |
4c52953f | 12202 | |
aef36ac1 AM |
12203 | dest = opd_entry_value (sym_sec, sym_value, |
12204 | &sym_sec, NULL, FALSE); | |
70cc837d AM |
12205 | if (dest == (bfd_vma) -1) |
12206 | continue; | |
12207 | } | |
12208 | else | |
12209 | dest = (sym_value | |
12210 | + sym_sec->output_offset | |
12211 | + sym_sec->output_section->vma); | |
4c52953f | 12212 | |
70cc837d AM |
12213 | /* Ignore branch to self. */ |
12214 | if (sym_sec == isec) | |
12215 | continue; | |
4c52953f | 12216 | |
70cc837d AM |
12217 | /* If the called function uses the toc, we need a stub. */ |
12218 | if (sym_sec->has_toc_reloc | |
12219 | || sym_sec->makes_toc_func_call) | |
4c52953f | 12220 | { |
70cc837d | 12221 | ret = 1; |
4c52953f AM |
12222 | break; |
12223 | } | |
70cc837d AM |
12224 | |
12225 | /* Assume any branch that needs a long branch stub might in fact | |
12226 | need a plt_branch stub. A plt_branch stub uses r2. */ | |
12227 | else if (dest - (isec->output_offset | |
12228 | + isec->output_section->vma | |
6911b7dc AM |
12229 | + rel->r_offset) + (1 << 25) |
12230 | >= (2u << 25) - PPC64_LOCAL_ENTRY_OFFSET (h | |
12231 | ? h->other | |
12232 | : sym->st_other)) | |
4c52953f | 12233 | { |
70cc837d AM |
12234 | ret = 1; |
12235 | break; | |
12236 | } | |
12237 | ||
12238 | /* If calling back to a section in the process of being | |
12239 | tested, we can't say for sure that no toc adjusting stubs | |
12240 | are needed, so don't return zero. */ | |
12241 | else if (sym_sec->call_check_in_progress) | |
12242 | ret = 2; | |
12243 | ||
12244 | /* Branches to another section that itself doesn't have any TOC | |
12245 | references are OK. Recursively call ourselves to check. */ | |
12246 | else if (!sym_sec->call_check_done) | |
12247 | { | |
12248 | int recur; | |
12249 | ||
12250 | /* Mark current section as indeterminate, so that other | |
12251 | sections that call back to current won't be marked as | |
12252 | known. */ | |
12253 | isec->call_check_in_progress = 1; | |
12254 | recur = toc_adjusting_stub_needed (info, sym_sec); | |
12255 | isec->call_check_in_progress = 0; | |
12256 | ||
4c52953f AM |
12257 | if (recur != 0) |
12258 | { | |
70cc837d AM |
12259 | ret = recur; |
12260 | if (recur != 2) | |
12261 | break; | |
4c52953f AM |
12262 | } |
12263 | } | |
4c52953f | 12264 | } |
70cc837d AM |
12265 | |
12266 | if (local_syms != NULL | |
12267 | && (elf_symtab_hdr (isec->owner).contents | |
12268 | != (unsigned char *) local_syms)) | |
12269 | free (local_syms); | |
12270 | if (elf_section_data (isec)->relocs != relstart) | |
12271 | free (relstart); | |
9b5ecbd0 AM |
12272 | } |
12273 | ||
70cc837d AM |
12274 | if ((ret & 1) == 0 |
12275 | && isec->map_head.s != NULL | |
12276 | && (strcmp (isec->output_section->name, ".init") == 0 | |
12277 | || strcmp (isec->output_section->name, ".fini") == 0)) | |
12278 | { | |
12279 | if (isec->map_head.s->has_toc_reloc | |
12280 | || isec->map_head.s->makes_toc_func_call) | |
12281 | ret = 1; | |
12282 | else if (!isec->map_head.s->call_check_done) | |
12283 | { | |
12284 | int recur; | |
12285 | isec->call_check_in_progress = 1; | |
12286 | recur = toc_adjusting_stub_needed (info, isec->map_head.s); | |
12287 | isec->call_check_in_progress = 0; | |
12288 | if (recur != 0) | |
12289 | ret = recur; | |
12290 | } | |
12291 | } | |
12292 | ||
12293 | if (ret == 1) | |
12294 | isec->makes_toc_func_call = 1; | |
4c52953f | 12295 | |
9b5ecbd0 AM |
12296 | return ret; |
12297 | } | |
12298 | ||
721956f4 AM |
12299 | /* The linker repeatedly calls this function for each input section, |
12300 | in the order that input sections are linked into output sections. | |
12301 | Build lists of input sections to determine groupings between which | |
12302 | we may insert linker stubs. */ | |
12303 | ||
9b5ecbd0 | 12304 | bfd_boolean |
4ce794b7 | 12305 | ppc64_elf_next_input_section (struct bfd_link_info *info, asection *isec) |
721956f4 AM |
12306 | { |
12307 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
12308 | ||
4dfe6ac6 NC |
12309 | if (htab == NULL) |
12310 | return FALSE; | |
12311 | ||
734b6cf9 | 12312 | if ((isec->output_section->flags & SEC_CODE) != 0 |
6f20ed8a | 12313 | && isec->output_section->id < htab->sec_info_arr_size) |
721956f4 | 12314 | { |
3d6f9012 AM |
12315 | /* This happens to make the list in reverse order, |
12316 | which is what we want. */ | |
6f20ed8a AM |
12317 | htab->sec_info[isec->id].u.list |
12318 | = htab->sec_info[isec->output_section->id].u.list; | |
12319 | htab->sec_info[isec->output_section->id].u.list = isec; | |
721956f4 | 12320 | } |
ad8e1ba5 | 12321 | |
4c52953f | 12322 | if (htab->multi_toc_needed) |
9b5ecbd0 | 12323 | { |
8b974ba3 AM |
12324 | /* Analyse sections that aren't already flagged as needing a |
12325 | valid toc pointer. Exclude .fixup for the linux kernel. | |
12326 | .fixup contains branches, but only back to the function that | |
12327 | hit an exception. */ | |
12328 | if (!(isec->has_toc_reloc | |
12329 | || (isec->flags & SEC_CODE) == 0 | |
12330 | || strcmp (isec->name, ".fixup") == 0 | |
12331 | || isec->call_check_done)) | |
12332 | { | |
12333 | if (toc_adjusting_stub_needed (info, isec) < 0) | |
6683a28d | 12334 | return FALSE; |
8b974ba3 AM |
12335 | } |
12336 | /* Make all sections use the TOC assigned for this object file. | |
12337 | This will be wrong for pasted sections; We fix that in | |
12338 | check_pasted_section(). */ | |
12339 | if (elf_gp (isec->owner) != 0) | |
12340 | htab->toc_curr = elf_gp (isec->owner); | |
12341 | } | |
12342 | ||
6f20ed8a | 12343 | htab->sec_info[isec->id].toc_off = htab->toc_curr; |
9b5ecbd0 | 12344 | return TRUE; |
721956f4 AM |
12345 | } |
12346 | ||
70cc837d AM |
12347 | /* Check that all .init and .fini sections use the same toc, if they |
12348 | have toc relocs. */ | |
12349 | ||
12350 | static bfd_boolean | |
12351 | check_pasted_section (struct bfd_link_info *info, const char *name) | |
12352 | { | |
12353 | asection *o = bfd_get_section_by_name (info->output_bfd, name); | |
12354 | ||
12355 | if (o != NULL) | |
12356 | { | |
12357 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
12358 | bfd_vma toc_off = 0; | |
12359 | asection *i; | |
12360 | ||
12361 | for (i = o->map_head.s; i != NULL; i = i->map_head.s) | |
12362 | if (i->has_toc_reloc) | |
12363 | { | |
12364 | if (toc_off == 0) | |
6f20ed8a AM |
12365 | toc_off = htab->sec_info[i->id].toc_off; |
12366 | else if (toc_off != htab->sec_info[i->id].toc_off) | |
70cc837d AM |
12367 | return FALSE; |
12368 | } | |
6683a28d AM |
12369 | |
12370 | if (toc_off == 0) | |
12371 | for (i = o->map_head.s; i != NULL; i = i->map_head.s) | |
12372 | if (i->makes_toc_func_call) | |
12373 | { | |
6f20ed8a | 12374 | toc_off = htab->sec_info[i->id].toc_off; |
6683a28d AM |
12375 | break; |
12376 | } | |
12377 | ||
70cc837d AM |
12378 | /* Make sure the whole pasted function uses the same toc offset. */ |
12379 | if (toc_off != 0) | |
12380 | for (i = o->map_head.s; i != NULL; i = i->map_head.s) | |
6f20ed8a | 12381 | htab->sec_info[i->id].toc_off = toc_off; |
70cc837d AM |
12382 | } |
12383 | return TRUE; | |
12384 | } | |
12385 | ||
12386 | bfd_boolean | |
12387 | ppc64_elf_check_init_fini (struct bfd_link_info *info) | |
12388 | { | |
12389 | return (check_pasted_section (info, ".init") | |
12390 | & check_pasted_section (info, ".fini")); | |
12391 | } | |
12392 | ||
721956f4 AM |
12393 | /* See whether we can group stub sections together. Grouping stub |
12394 | sections may result in fewer stubs. More importantly, we need to | |
12395 | put all .init* and .fini* stubs at the beginning of the .init or | |
12396 | .fini output sections respectively, because glibc splits the | |
12397 | _init and _fini functions into multiple parts. Putting a stub in | |
12398 | the middle of a function is not a good idea. */ | |
12399 | ||
6f20ed8a AM |
12400 | static bfd_boolean |
12401 | group_sections (struct bfd_link_info *info, | |
4ce794b7 AM |
12402 | bfd_size_type stub_group_size, |
12403 | bfd_boolean stubs_always_before_branch) | |
721956f4 | 12404 | { |
6f20ed8a AM |
12405 | struct ppc_link_hash_table *htab; |
12406 | asection *osec; | |
7c8fe5c4 AM |
12407 | bfd_boolean suppress_size_errors; |
12408 | ||
6f20ed8a AM |
12409 | htab = ppc_hash_table (info); |
12410 | if (htab == NULL) | |
12411 | return FALSE; | |
12412 | ||
7c8fe5c4 | 12413 | suppress_size_errors = FALSE; |
7c8fe5c4 AM |
12414 | if (stub_group_size == 1) |
12415 | { | |
12416 | /* Default values. */ | |
12417 | if (stubs_always_before_branch) | |
09f92717 | 12418 | stub_group_size = 0x1e00000; |
7c8fe5c4 | 12419 | else |
09f92717 | 12420 | stub_group_size = 0x1c00000; |
7c8fe5c4 AM |
12421 | suppress_size_errors = TRUE; |
12422 | } | |
12423 | ||
6f20ed8a | 12424 | for (osec = info->output_bfd->sections; osec != NULL; osec = osec->next) |
721956f4 | 12425 | { |
6f20ed8a AM |
12426 | asection *tail; |
12427 | ||
12428 | if (osec->id >= htab->sec_info_arr_size) | |
12429 | continue; | |
12430 | ||
12431 | tail = htab->sec_info[osec->id].u.list; | |
734b6cf9 | 12432 | while (tail != NULL) |
721956f4 | 12433 | { |
734b6cf9 AM |
12434 | asection *curr; |
12435 | asection *prev; | |
12436 | bfd_size_type total; | |
12437 | bfd_boolean big_sec; | |
12438 | bfd_vma curr_toc; | |
6f20ed8a | 12439 | struct map_stub *group; |
09f92717 | 12440 | bfd_size_type group_size; |
734b6cf9 AM |
12441 | |
12442 | curr = tail; | |
eea6121a | 12443 | total = tail->size; |
09f92717 AM |
12444 | group_size = (ppc64_elf_section_data (tail) != NULL |
12445 | && ppc64_elf_section_data (tail)->has_14bit_branch | |
12446 | ? stub_group_size >> 10 : stub_group_size); | |
12447 | ||
12448 | big_sec = total > group_size; | |
7c8fe5c4 | 12449 | if (big_sec && !suppress_size_errors) |
695344c0 | 12450 | /* xgettext:c-format */ |
871b3ab2 | 12451 | _bfd_error_handler (_("%pB section %pA exceeds stub group size"), |
4eca0228 | 12452 | tail->owner, tail); |
6f20ed8a | 12453 | curr_toc = htab->sec_info[tail->id].toc_off; |
734b6cf9 | 12454 | |
6f20ed8a | 12455 | while ((prev = htab->sec_info[curr->id].u.list) != NULL |
734b6cf9 | 12456 | && ((total += curr->output_offset - prev->output_offset) |
6bee8834 AM |
12457 | < (ppc64_elf_section_data (prev) != NULL |
12458 | && ppc64_elf_section_data (prev)->has_14bit_branch | |
09f92717 | 12459 | ? (group_size = stub_group_size >> 10) : group_size)) |
6f20ed8a | 12460 | && htab->sec_info[prev->id].toc_off == curr_toc) |
734b6cf9 AM |
12461 | curr = prev; |
12462 | ||
12463 | /* OK, the size from the start of CURR to the end is less | |
09f92717 | 12464 | than group_size and thus can be handled by one stub |
734b6cf9 | 12465 | section. (or the tail section is itself larger than |
09f92717 AM |
12466 | group_size, in which case we may be toast.) We should |
12467 | really be keeping track of the total size of stubs added | |
12468 | here, as stubs contribute to the final output section | |
12469 | size. That's a little tricky, and this way will only | |
12470 | break if stubs added make the total size more than 2^25, | |
12471 | ie. for the default stub_group_size, if stubs total more | |
12472 | than 2097152 bytes, or nearly 75000 plt call stubs. */ | |
6f20ed8a AM |
12473 | group = bfd_alloc (curr->owner, sizeof (*group)); |
12474 | if (group == NULL) | |
12475 | return FALSE; | |
12476 | group->link_sec = curr; | |
12477 | group->stub_sec = NULL; | |
a4b6fadd | 12478 | group->needs_save_res = 0; |
d4aaa2a0 | 12479 | group->tls_get_addr_opt_bctrl = -1u; |
a4b6fadd AM |
12480 | group->next = htab->group; |
12481 | htab->group = group; | |
734b6cf9 | 12482 | do |
721956f4 | 12483 | { |
6f20ed8a | 12484 | prev = htab->sec_info[tail->id].u.list; |
734b6cf9 | 12485 | /* Set up this stub group. */ |
6f20ed8a | 12486 | htab->sec_info[tail->id].u.group = group; |
721956f4 | 12487 | } |
734b6cf9 AM |
12488 | while (tail != curr && (tail = prev) != NULL); |
12489 | ||
09f92717 | 12490 | /* But wait, there's more! Input sections up to group_size |
734b6cf9 AM |
12491 | bytes before the stub section can be handled by it too. |
12492 | Don't do this if we have a really large section after the | |
12493 | stubs, as adding more stubs increases the chance that | |
12494 | branches may not reach into the stub section. */ | |
12495 | if (!stubs_always_before_branch && !big_sec) | |
12496 | { | |
12497 | total = 0; | |
12498 | while (prev != NULL | |
12499 | && ((total += tail->output_offset - prev->output_offset) | |
6bee8834 AM |
12500 | < (ppc64_elf_section_data (prev) != NULL |
12501 | && ppc64_elf_section_data (prev)->has_14bit_branch | |
09f92717 | 12502 | ? (group_size = stub_group_size >> 10) : group_size)) |
6f20ed8a | 12503 | && htab->sec_info[prev->id].toc_off == curr_toc) |
734b6cf9 AM |
12504 | { |
12505 | tail = prev; | |
6f20ed8a AM |
12506 | prev = htab->sec_info[tail->id].u.list; |
12507 | htab->sec_info[tail->id].u.group = group; | |
734b6cf9 AM |
12508 | } |
12509 | } | |
12510 | tail = prev; | |
721956f4 AM |
12511 | } |
12512 | } | |
6f20ed8a | 12513 | return TRUE; |
721956f4 AM |
12514 | } |
12515 | ||
58d180e8 AM |
12516 | static const unsigned char glink_eh_frame_cie[] = |
12517 | { | |
12518 | 0, 0, 0, 16, /* length. */ | |
12519 | 0, 0, 0, 0, /* id. */ | |
12520 | 1, /* CIE version. */ | |
12521 | 'z', 'R', 0, /* Augmentation string. */ | |
12522 | 4, /* Code alignment. */ | |
12523 | 0x78, /* Data alignment. */ | |
12524 | 65, /* RA reg. */ | |
12525 | 1, /* Augmentation size. */ | |
12526 | DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding. */ | |
2e0ce1c8 | 12527 | DW_CFA_def_cfa, 1, 0 /* def_cfa: r1 offset 0. */ |
58d180e8 AM |
12528 | }; |
12529 | ||
d4aaa2a0 AM |
12530 | static size_t |
12531 | stub_eh_frame_size (struct map_stub *group, size_t align) | |
12532 | { | |
12533 | size_t this_size = 17; | |
12534 | if (group->tls_get_addr_opt_bctrl != -1u) | |
12535 | { | |
12536 | unsigned int to_bctrl = group->tls_get_addr_opt_bctrl / 4; | |
12537 | if (to_bctrl < 64) | |
12538 | this_size += 1; | |
12539 | else if (to_bctrl < 256) | |
12540 | this_size += 2; | |
12541 | else if (to_bctrl < 65536) | |
12542 | this_size += 3; | |
12543 | else | |
12544 | this_size += 5; | |
12545 | this_size += 6; | |
12546 | } | |
12547 | this_size = (this_size + align - 1) & -align; | |
12548 | return this_size; | |
12549 | } | |
12550 | ||
d969d15f AM |
12551 | /* Stripping output sections is normally done before dynamic section |
12552 | symbols have been allocated. This function is called later, and | |
12553 | handles cases like htab->brlt which is mapped to its own output | |
12554 | section. */ | |
12555 | ||
12556 | static void | |
12557 | maybe_strip_output (struct bfd_link_info *info, asection *isec) | |
12558 | { | |
12559 | if (isec->size == 0 | |
12560 | && isec->output_section->size == 0 | |
53d8967a | 12561 | && !(isec->output_section->flags & SEC_KEEP) |
d969d15f AM |
12562 | && !bfd_section_removed_from_list (info->output_bfd, |
12563 | isec->output_section) | |
12564 | && elf_section_data (isec->output_section)->dynindx == 0) | |
12565 | { | |
12566 | isec->output_section->flags |= SEC_EXCLUDE; | |
12567 | bfd_section_list_remove (info->output_bfd, isec->output_section); | |
12568 | info->output_bfd->section_count--; | |
12569 | } | |
12570 | } | |
12571 | ||
721956f4 AM |
12572 | /* Determine and set the size of the stub section for a final link. |
12573 | ||
12574 | The basic idea here is to examine all the relocations looking for | |
12575 | PC-relative calls to a target that is unreachable with a "bl" | |
12576 | instruction. */ | |
12577 | ||
b34976b6 | 12578 | bfd_boolean |
e7d1c40c | 12579 | ppc64_elf_size_stubs (struct bfd_link_info *info) |
721956f4 AM |
12580 | { |
12581 | bfd_size_type stub_group_size; | |
b34976b6 | 12582 | bfd_boolean stubs_always_before_branch; |
721956f4 AM |
12583 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
12584 | ||
4dfe6ac6 NC |
12585 | if (htab == NULL) |
12586 | return FALSE; | |
12587 | ||
0e1862bb | 12588 | if (htab->params->plt_thread_safe == -1 && !bfd_link_executable (info)) |
e7d1c40c | 12589 | htab->params->plt_thread_safe = 1; |
b9e5796b | 12590 | if (!htab->opd_abi) |
e7d1c40c AM |
12591 | htab->params->plt_thread_safe = 0; |
12592 | else if (htab->params->plt_thread_safe == -1) | |
794e51c0 | 12593 | { |
e2458743 | 12594 | static const char *const thread_starter[] = |
794e51c0 AM |
12595 | { |
12596 | "pthread_create", | |
12597 | /* libstdc++ */ | |
12598 | "_ZNSt6thread15_M_start_threadESt10shared_ptrINS_10_Impl_baseEE", | |
12599 | /* librt */ | |
12600 | "aio_init", "aio_read", "aio_write", "aio_fsync", "lio_listio", | |
12601 | "mq_notify", "create_timer", | |
12602 | /* libanl */ | |
12603 | "getaddrinfo_a", | |
12604 | /* libgomp */ | |
2300b5a1 | 12605 | "GOMP_parallel", |
794e51c0 | 12606 | "GOMP_parallel_start", |
2300b5a1 | 12607 | "GOMP_parallel_loop_static", |
794e51c0 | 12608 | "GOMP_parallel_loop_static_start", |
2300b5a1 | 12609 | "GOMP_parallel_loop_dynamic", |
794e51c0 | 12610 | "GOMP_parallel_loop_dynamic_start", |
2300b5a1 | 12611 | "GOMP_parallel_loop_guided", |
794e51c0 | 12612 | "GOMP_parallel_loop_guided_start", |
2300b5a1 | 12613 | "GOMP_parallel_loop_runtime", |
794e51c0 | 12614 | "GOMP_parallel_loop_runtime_start", |
2300b5a1 | 12615 | "GOMP_parallel_sections", |
68ffbac6 | 12616 | "GOMP_parallel_sections_start", |
f9dffbf0 AM |
12617 | /* libgo */ |
12618 | "__go_go", | |
794e51c0 AM |
12619 | }; |
12620 | unsigned i; | |
12621 | ||
a4b6fadd | 12622 | for (i = 0; i < ARRAY_SIZE (thread_starter); i++) |
794e51c0 AM |
12623 | { |
12624 | struct elf_link_hash_entry *h; | |
12625 | h = elf_link_hash_lookup (&htab->elf, thread_starter[i], | |
12626 | FALSE, FALSE, TRUE); | |
e7d1c40c AM |
12627 | htab->params->plt_thread_safe = h != NULL && h->ref_regular; |
12628 | if (htab->params->plt_thread_safe) | |
794e51c0 AM |
12629 | break; |
12630 | } | |
12631 | } | |
e7d1c40c AM |
12632 | stubs_always_before_branch = htab->params->group_size < 0; |
12633 | if (htab->params->group_size < 0) | |
12634 | stub_group_size = -htab->params->group_size; | |
721956f4 | 12635 | else |
e7d1c40c | 12636 | stub_group_size = htab->params->group_size; |
721956f4 | 12637 | |
6f20ed8a AM |
12638 | if (!group_sections (info, stub_group_size, stubs_always_before_branch)) |
12639 | return FALSE; | |
721956f4 | 12640 | |
c9301e31 AM |
12641 | #define STUB_SHRINK_ITER 20 |
12642 | /* Loop until no stubs added. After iteration 20 of this loop we may | |
12643 | exit on a stub section shrinking. This is to break out of a | |
12644 | pathological case where adding stubs on one iteration decreases | |
12645 | section gaps (perhaps due to alignment), which then requires | |
12646 | fewer or smaller stubs on the next iteration. */ | |
12647 | ||
721956f4 AM |
12648 | while (1) |
12649 | { | |
12650 | bfd *input_bfd; | |
12651 | unsigned int bfd_indx; | |
a4b6fadd | 12652 | struct map_stub *group; |
721956f4 AM |
12653 | |
12654 | htab->stub_iteration += 1; | |
721956f4 AM |
12655 | |
12656 | for (input_bfd = info->input_bfds, bfd_indx = 0; | |
12657 | input_bfd != NULL; | |
c72f2fb2 | 12658 | input_bfd = input_bfd->link.next, bfd_indx++) |
721956f4 AM |
12659 | { |
12660 | Elf_Internal_Shdr *symtab_hdr; | |
12661 | asection *section; | |
6cdc0ccc | 12662 | Elf_Internal_Sym *local_syms = NULL; |
721956f4 | 12663 | |
0c8d6e5c | 12664 | if (!is_ppc64_elf (input_bfd)) |
67f93c31 AM |
12665 | continue; |
12666 | ||
721956f4 | 12667 | /* We'll need the symbol table in a second. */ |
0ffa91dd | 12668 | symtab_hdr = &elf_symtab_hdr (input_bfd); |
721956f4 AM |
12669 | if (symtab_hdr->sh_info == 0) |
12670 | continue; | |
12671 | ||
721956f4 AM |
12672 | /* Walk over each section attached to the input bfd. */ |
12673 | for (section = input_bfd->sections; | |
12674 | section != NULL; | |
12675 | section = section->next) | |
12676 | { | |
721956f4 | 12677 | Elf_Internal_Rela *internal_relocs, *irelaend, *irela; |
721956f4 AM |
12678 | |
12679 | /* If there aren't any relocs, then there's nothing more | |
12680 | to do. */ | |
12681 | if ((section->flags & SEC_RELOC) == 0 | |
12c0f757 AM |
12682 | || (section->flags & SEC_ALLOC) == 0 |
12683 | || (section->flags & SEC_LOAD) == 0 | |
12684 | || (section->flags & SEC_CODE) == 0 | |
721956f4 AM |
12685 | || section->reloc_count == 0) |
12686 | continue; | |
12687 | ||
12688 | /* If this section is a link-once section that will be | |
12689 | discarded, then don't create any stubs. */ | |
12690 | if (section->output_section == NULL | |
927be08e | 12691 | || section->output_section->owner != info->output_bfd) |
721956f4 AM |
12692 | continue; |
12693 | ||
1e2f5b6e AM |
12694 | /* Get the relocs. */ |
12695 | internal_relocs | |
4ce794b7 | 12696 | = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL, |
45d6a902 | 12697 | info->keep_memory); |
721956f4 | 12698 | if (internal_relocs == NULL) |
1e2f5b6e | 12699 | goto error_ret_free_local; |
721956f4 AM |
12700 | |
12701 | /* Now examine each relocation. */ | |
12702 | irela = internal_relocs; | |
12703 | irelaend = irela + section->reloc_count; | |
12704 | for (; irela < irelaend; irela++) | |
12705 | { | |
4ce794b7 AM |
12706 | enum elf_ppc64_reloc_type r_type; |
12707 | unsigned int r_indx; | |
721956f4 AM |
12708 | enum ppc_stub_type stub_type; |
12709 | struct ppc_stub_hash_entry *stub_entry; | |
8387904d | 12710 | asection *sym_sec, *code_sec; |
e054468f | 12711 | bfd_vma sym_value, code_value; |
721956f4 | 12712 | bfd_vma destination; |
6911b7dc | 12713 | unsigned long local_off; |
8843416a | 12714 | bfd_boolean ok_dest; |
721956f4 | 12715 | struct ppc_link_hash_entry *hash; |
8387904d | 12716 | struct ppc_link_hash_entry *fdh; |
411e1bfb AM |
12717 | struct elf_link_hash_entry *h; |
12718 | Elf_Internal_Sym *sym; | |
721956f4 AM |
12719 | char *stub_name; |
12720 | const asection *id_sec; | |
74f0fb50 | 12721 | struct _opd_sec_data *opd; |
e054468f | 12722 | struct plt_entry *plt_ent; |
721956f4 AM |
12723 | |
12724 | r_type = ELF64_R_TYPE (irela->r_info); | |
12725 | r_indx = ELF64_R_SYM (irela->r_info); | |
12726 | ||
4ce794b7 | 12727 | if (r_type >= R_PPC64_max) |
721956f4 AM |
12728 | { |
12729 | bfd_set_error (bfd_error_bad_value); | |
6cdc0ccc | 12730 | goto error_ret_free_internal; |
721956f4 AM |
12731 | } |
12732 | ||
12733 | /* Only look for stubs on branch instructions. */ | |
4ce794b7 AM |
12734 | if (r_type != R_PPC64_REL24 |
12735 | && r_type != R_PPC64_REL14 | |
12736 | && r_type != R_PPC64_REL14_BRTAKEN | |
12737 | && r_type != R_PPC64_REL14_BRNTAKEN) | |
721956f4 AM |
12738 | continue; |
12739 | ||
12740 | /* Now determine the call target, its name, value, | |
12741 | section. */ | |
411e1bfb AM |
12742 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, |
12743 | r_indx, input_bfd)) | |
12744 | goto error_ret_free_internal; | |
12745 | hash = (struct ppc_link_hash_entry *) h; | |
12746 | ||
8843416a | 12747 | ok_dest = FALSE; |
8387904d | 12748 | fdh = NULL; |
7fe2b9a6 | 12749 | sym_value = 0; |
411e1bfb | 12750 | if (hash == NULL) |
721956f4 | 12751 | { |
411e1bfb | 12752 | sym_value = sym->st_value; |
c27b8c2a AM |
12753 | if (sym_sec != NULL |
12754 | && sym_sec->output_section != NULL) | |
12755 | ok_dest = TRUE; | |
721956f4 | 12756 | } |
7fe2b9a6 AM |
12757 | else if (hash->elf.root.type == bfd_link_hash_defined |
12758 | || hash->elf.root.type == bfd_link_hash_defweak) | |
12759 | { | |
12760 | sym_value = hash->elf.root.u.def.value; | |
12761 | if (sym_sec->output_section != NULL) | |
12762 | ok_dest = TRUE; | |
12763 | } | |
12764 | else if (hash->elf.root.type == bfd_link_hash_undefweak | |
12765 | || hash->elf.root.type == bfd_link_hash_undefined) | |
721956f4 | 12766 | { |
99877b66 | 12767 | /* Recognise an old ABI func code entry sym, and |
7fe2b9a6 AM |
12768 | use the func descriptor sym instead if it is |
12769 | defined. */ | |
ceb1f1ef | 12770 | if (hash->elf.root.root.string[0] == '.' |
8c5b4e52 | 12771 | && hash->oh != NULL) |
8387904d | 12772 | { |
8c5b4e52 | 12773 | fdh = ppc_follow_link (hash->oh); |
8387904d AM |
12774 | if (fdh->elf.root.type == bfd_link_hash_defined |
12775 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
12776 | { | |
12777 | sym_sec = fdh->elf.root.u.def.section; | |
12778 | sym_value = fdh->elf.root.u.def.value; | |
12779 | if (sym_sec->output_section != NULL) | |
12780 | ok_dest = TRUE; | |
12781 | } | |
99877b66 AM |
12782 | else |
12783 | fdh = NULL; | |
8387904d | 12784 | } |
7fe2b9a6 AM |
12785 | } |
12786 | else | |
12787 | { | |
12788 | bfd_set_error (bfd_error_bad_value); | |
12789 | goto error_ret_free_internal; | |
721956f4 AM |
12790 | } |
12791 | ||
8843416a | 12792 | destination = 0; |
6911b7dc | 12793 | local_off = 0; |
8843416a AM |
12794 | if (ok_dest) |
12795 | { | |
12796 | sym_value += irela->r_addend; | |
12797 | destination = (sym_value | |
12798 | + sym_sec->output_offset | |
12799 | + sym_sec->output_section->vma); | |
6911b7dc AM |
12800 | local_off = PPC64_LOCAL_ENTRY_OFFSET (hash |
12801 | ? hash->elf.other | |
12802 | : sym->st_other); | |
8843416a AM |
12803 | } |
12804 | ||
8387904d | 12805 | code_sec = sym_sec; |
e054468f | 12806 | code_value = sym_value; |
74f0fb50 AM |
12807 | opd = get_opd_info (sym_sec); |
12808 | if (opd != NULL) | |
8387904d AM |
12809 | { |
12810 | bfd_vma dest; | |
12811 | ||
74f0fb50 | 12812 | if (hash == NULL && opd->adjust != NULL) |
8387904d | 12813 | { |
51aecdc5 | 12814 | long adjust = opd->adjust[OPD_NDX (sym_value)]; |
8387904d AM |
12815 | if (adjust == -1) |
12816 | continue; | |
e054468f | 12817 | code_value += adjust; |
8387904d AM |
12818 | sym_value += adjust; |
12819 | } | |
12820 | dest = opd_entry_value (sym_sec, sym_value, | |
aef36ac1 | 12821 | &code_sec, &code_value, FALSE); |
8387904d AM |
12822 | if (dest != (bfd_vma) -1) |
12823 | { | |
12824 | destination = dest; | |
12825 | if (fdh != NULL) | |
12826 | { | |
12827 | /* Fixup old ABI sym to point at code | |
12828 | entry. */ | |
99877b66 | 12829 | hash->elf.root.type = bfd_link_hash_defweak; |
8387904d | 12830 | hash->elf.root.u.def.section = code_sec; |
e054468f | 12831 | hash->elf.root.u.def.value = code_value; |
8387904d AM |
12832 | } |
12833 | } | |
12834 | } | |
12835 | ||
721956f4 | 12836 | /* Determine what (if any) linker stub is needed. */ |
e054468f | 12837 | plt_ent = NULL; |
721956f4 | 12838 | stub_type = ppc_type_of_stub (section, irela, &hash, |
6911b7dc AM |
12839 | &plt_ent, destination, |
12840 | local_off); | |
ad8e1ba5 AM |
12841 | |
12842 | if (stub_type != ppc_stub_plt_call) | |
12843 | { | |
12844 | /* Check whether we need a TOC adjusting stub. | |
12845 | Since the linker pastes together pieces from | |
12846 | different object files when creating the | |
12847 | _init and _fini functions, it may be that a | |
12848 | call to what looks like a local sym is in | |
12849 | fact a call needing a TOC adjustment. */ | |
8387904d AM |
12850 | if (code_sec != NULL |
12851 | && code_sec->output_section != NULL | |
6f20ed8a AM |
12852 | && (htab->sec_info[code_sec->id].toc_off |
12853 | != htab->sec_info[section->id].toc_off) | |
4c52953f AM |
12854 | && (code_sec->has_toc_reloc |
12855 | || code_sec->makes_toc_func_call)) | |
ad8e1ba5 AM |
12856 | stub_type = ppc_stub_long_branch_r2off; |
12857 | } | |
12858 | ||
721956f4 AM |
12859 | if (stub_type == ppc_stub_none) |
12860 | continue; | |
12861 | ||
411e1bfb AM |
12862 | /* __tls_get_addr calls might be eliminated. */ |
12863 | if (stub_type != ppc_stub_plt_call | |
12864 | && hash != NULL | |
8387904d AM |
12865 | && (hash == htab->tls_get_addr |
12866 | || hash == htab->tls_get_addr_fd) | |
411e1bfb AM |
12867 | && section->has_tls_reloc |
12868 | && irela != internal_relocs) | |
12869 | { | |
12870 | /* Get tls info. */ | |
f961d9dd | 12871 | unsigned char *tls_mask; |
411e1bfb | 12872 | |
3a71aa26 | 12873 | if (!get_tls_mask (&tls_mask, NULL, NULL, &local_syms, |
411e1bfb AM |
12874 | irela - 1, input_bfd)) |
12875 | goto error_ret_free_internal; | |
37da22e5 | 12876 | if ((*tls_mask & TLS_TLS) != 0) |
411e1bfb AM |
12877 | continue; |
12878 | } | |
12879 | ||
f378ab09 | 12880 | if (stub_type == ppc_stub_plt_call) |
794e51c0 | 12881 | { |
6e1816be AM |
12882 | if (!htab->opd_abi |
12883 | && htab->params->plt_localentry0 != 0 | |
12884 | && is_elfv2_localentry0 (&hash->elf)) | |
12885 | htab->has_plt_localentry0 = 1; | |
12886 | else if (irela + 1 < irelaend | |
12887 | && irela[1].r_offset == irela->r_offset + 4 | |
12888 | && (ELF64_R_TYPE (irela[1].r_info) | |
12889 | == R_PPC64_TOCSAVE)) | |
f378ab09 AM |
12890 | { |
12891 | if (!tocsave_find (htab, INSERT, | |
12892 | &local_syms, irela + 1, input_bfd)) | |
12893 | goto error_ret_free_internal; | |
12894 | } | |
f378ab09 AM |
12895 | else |
12896 | stub_type = ppc_stub_plt_call_r2save; | |
794e51c0 | 12897 | } |
3b421ab3 | 12898 | |
721956f4 | 12899 | /* Support for grouping stub sections. */ |
6f20ed8a | 12900 | id_sec = htab->sec_info[section->id].u.group->link_sec; |
721956f4 AM |
12901 | |
12902 | /* Get the name of this stub. */ | |
12903 | stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela); | |
12904 | if (!stub_name) | |
12905 | goto error_ret_free_internal; | |
12906 | ||
12907 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, | |
b34976b6 | 12908 | stub_name, FALSE, FALSE); |
721956f4 AM |
12909 | if (stub_entry != NULL) |
12910 | { | |
12911 | /* The proper stub has already been created. */ | |
12912 | free (stub_name); | |
794e51c0 AM |
12913 | if (stub_type == ppc_stub_plt_call_r2save) |
12914 | stub_entry->stub_type = stub_type; | |
721956f4 AM |
12915 | continue; |
12916 | } | |
12917 | ||
25f53a85 | 12918 | stub_entry = ppc_add_stub (stub_name, section, info); |
721956f4 AM |
12919 | if (stub_entry == NULL) |
12920 | { | |
12921 | free (stub_name); | |
6cdc0ccc AM |
12922 | error_ret_free_internal: |
12923 | if (elf_section_data (section)->relocs == NULL) | |
12924 | free (internal_relocs); | |
12925 | error_ret_free_local: | |
12926 | if (local_syms != NULL | |
12927 | && (symtab_hdr->contents | |
12928 | != (unsigned char *) local_syms)) | |
12929 | free (local_syms); | |
b34976b6 | 12930 | return FALSE; |
721956f4 AM |
12931 | } |
12932 | ||
ad8e1ba5 | 12933 | stub_entry->stub_type = stub_type; |
794e51c0 AM |
12934 | if (stub_type != ppc_stub_plt_call |
12935 | && stub_type != ppc_stub_plt_call_r2save) | |
e054468f AM |
12936 | { |
12937 | stub_entry->target_value = code_value; | |
12938 | stub_entry->target_section = code_sec; | |
12939 | } | |
12940 | else | |
12941 | { | |
12942 | stub_entry->target_value = sym_value; | |
12943 | stub_entry->target_section = sym_sec; | |
12944 | } | |
721956f4 | 12945 | stub_entry->h = hash; |
e054468f | 12946 | stub_entry->plt_ent = plt_ent; |
2d7ad24e AM |
12947 | stub_entry->symtype |
12948 | = hash ? hash->elf.type : ELF_ST_TYPE (sym->st_info); | |
6911b7dc | 12949 | stub_entry->other = hash ? hash->elf.other : sym->st_other; |
ee75fd95 AM |
12950 | |
12951 | if (stub_entry->h != NULL) | |
12952 | htab->stub_globals += 1; | |
721956f4 AM |
12953 | } |
12954 | ||
12955 | /* We're done with the internal relocs, free them. */ | |
6cdc0ccc | 12956 | if (elf_section_data (section)->relocs != internal_relocs) |
1e2f5b6e | 12957 | free (internal_relocs); |
721956f4 | 12958 | } |
6cdc0ccc AM |
12959 | |
12960 | if (local_syms != NULL | |
12961 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
12962 | { | |
12963 | if (!info->keep_memory) | |
12964 | free (local_syms); | |
12965 | else | |
12966 | symtab_hdr->contents = (unsigned char *) local_syms; | |
12967 | } | |
721956f4 AM |
12968 | } |
12969 | ||
5c3dead3 | 12970 | /* We may have added some stubs. Find out the new size of the |
721956f4 | 12971 | stub sections. */ |
d4aaa2a0 AM |
12972 | for (group = htab->group; group != NULL; group = group->next) |
12973 | if (group->stub_sec != NULL) | |
ee75fd95 | 12974 | { |
d4aaa2a0 AM |
12975 | asection *stub_sec = group->stub_sec; |
12976 | ||
ea3d7d1c AM |
12977 | if (htab->stub_iteration <= STUB_SHRINK_ITER |
12978 | || stub_sec->rawsize < stub_sec->size) | |
12979 | /* Past STUB_SHRINK_ITER, rawsize is the max size seen. */ | |
12980 | stub_sec->rawsize = stub_sec->size; | |
ee75fd95 AM |
12981 | stub_sec->size = 0; |
12982 | stub_sec->reloc_count = 0; | |
84f5d08e | 12983 | stub_sec->flags &= ~SEC_RELOC; |
ee75fd95 | 12984 | } |
eea6121a | 12985 | |
ba21f564 AM |
12986 | if (htab->stub_iteration <= STUB_SHRINK_ITER |
12987 | || htab->brlt->rawsize < htab->brlt->size) | |
12988 | htab->brlt->rawsize = htab->brlt->size; | |
eea6121a | 12989 | htab->brlt->size = 0; |
84f5d08e AM |
12990 | htab->brlt->reloc_count = 0; |
12991 | htab->brlt->flags &= ~SEC_RELOC; | |
ee75fd95 | 12992 | if (htab->relbrlt != NULL) |
eea6121a | 12993 | htab->relbrlt->size = 0; |
721956f4 | 12994 | |
63bc6f6c | 12995 | bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, info); |
721956f4 | 12996 | |
a4b6fadd AM |
12997 | for (group = htab->group; group != NULL; group = group->next) |
12998 | if (group->needs_save_res) | |
12999 | group->stub_sec->size += htab->sfpr->size; | |
13000 | ||
176a0d42 AM |
13001 | if (info->emitrelocations |
13002 | && htab->glink != NULL && htab->glink->size != 0) | |
13003 | { | |
13004 | htab->glink->reloc_count = 1; | |
13005 | htab->glink->flags |= SEC_RELOC; | |
13006 | } | |
13007 | ||
58d180e8 AM |
13008 | if (htab->glink_eh_frame != NULL |
13009 | && !bfd_is_abs_section (htab->glink_eh_frame->output_section) | |
2d0d44d5 | 13010 | && htab->glink_eh_frame->output_section->size > 8) |
58d180e8 | 13011 | { |
2e0ce1c8 | 13012 | size_t size = 0, align = 4; |
58d180e8 | 13013 | |
d4aaa2a0 AM |
13014 | for (group = htab->group; group != NULL; group = group->next) |
13015 | if (group->stub_sec != NULL) | |
13016 | size += stub_eh_frame_size (group, align); | |
58d180e8 | 13017 | if (htab->glink != NULL && htab->glink->size != 0) |
2e0ce1c8 | 13018 | size += (24 + align - 1) & -align; |
58d180e8 | 13019 | if (size != 0) |
2e0ce1c8 AM |
13020 | size += (sizeof (glink_eh_frame_cie) + align - 1) & -align; |
13021 | align = 1ul << htab->glink_eh_frame->output_section->alignment_power; | |
13022 | size = (size + align - 1) & -align; | |
58d180e8 AM |
13023 | htab->glink_eh_frame->rawsize = htab->glink_eh_frame->size; |
13024 | htab->glink_eh_frame->size = size; | |
13025 | } | |
13026 | ||
e7d1c40c | 13027 | if (htab->params->plt_stub_align != 0) |
d4aaa2a0 AM |
13028 | for (group = htab->group; group != NULL; group = group->next) |
13029 | if (group->stub_sec != NULL) | |
691d2e9a AM |
13030 | { |
13031 | int align = abs (htab->params->plt_stub_align); | |
13032 | group->stub_sec->size | |
13033 | = (group->stub_sec->size + (1 << align) - 1) & -(1 << align); | |
13034 | } | |
d4aaa2a0 AM |
13035 | |
13036 | for (group = htab->group; group != NULL; group = group->next) | |
13037 | if (group->stub_sec != NULL | |
13038 | && group->stub_sec->rawsize != group->stub_sec->size | |
c9301e31 | 13039 | && (htab->stub_iteration <= STUB_SHRINK_ITER |
d4aaa2a0 | 13040 | || group->stub_sec->rawsize < group->stub_sec->size)) |
5c3dead3 AM |
13041 | break; |
13042 | ||
d4aaa2a0 | 13043 | if (group == NULL |
ba21f564 AM |
13044 | && (htab->brlt->rawsize == htab->brlt->size |
13045 | || (htab->stub_iteration > STUB_SHRINK_ITER | |
13046 | && htab->brlt->rawsize > htab->brlt->size)) | |
58d180e8 AM |
13047 | && (htab->glink_eh_frame == NULL |
13048 | || htab->glink_eh_frame->rawsize == htab->glink_eh_frame->size)) | |
5c3dead3 AM |
13049 | break; |
13050 | ||
721956f4 | 13051 | /* Ask the linker to do its stuff. */ |
e7d1c40c | 13052 | (*htab->params->layout_sections_again) (); |
721956f4 AM |
13053 | } |
13054 | ||
da44f4e5 AM |
13055 | if (htab->glink_eh_frame != NULL |
13056 | && htab->glink_eh_frame->size != 0) | |
13057 | { | |
13058 | bfd_vma val; | |
13059 | bfd_byte *p, *last_fde; | |
13060 | size_t last_fde_len, size, align, pad; | |
d4aaa2a0 | 13061 | struct map_stub *group; |
da44f4e5 AM |
13062 | |
13063 | p = bfd_zalloc (htab->glink_eh_frame->owner, htab->glink_eh_frame->size); | |
13064 | if (p == NULL) | |
13065 | return FALSE; | |
13066 | htab->glink_eh_frame->contents = p; | |
13067 | last_fde = p; | |
2e0ce1c8 | 13068 | align = 4; |
da44f4e5 AM |
13069 | |
13070 | memcpy (p, glink_eh_frame_cie, sizeof (glink_eh_frame_cie)); | |
13071 | /* CIE length (rewrite in case little-endian). */ | |
2e0ce1c8 | 13072 | last_fde_len = ((sizeof (glink_eh_frame_cie) + align - 1) & -align) - 4; |
da44f4e5 | 13073 | bfd_put_32 (htab->elf.dynobj, last_fde_len, p); |
2e0ce1c8 | 13074 | p += last_fde_len + 4; |
da44f4e5 | 13075 | |
d4aaa2a0 AM |
13076 | for (group = htab->group; group != NULL; group = group->next) |
13077 | if (group->stub_sec != NULL) | |
da44f4e5 AM |
13078 | { |
13079 | last_fde = p; | |
d4aaa2a0 | 13080 | last_fde_len = stub_eh_frame_size (group, align) - 4; |
da44f4e5 | 13081 | /* FDE length. */ |
2e0ce1c8 | 13082 | bfd_put_32 (htab->elf.dynobj, last_fde_len, p); |
da44f4e5 AM |
13083 | p += 4; |
13084 | /* CIE pointer. */ | |
13085 | val = p - htab->glink_eh_frame->contents; | |
13086 | bfd_put_32 (htab->elf.dynobj, val, p); | |
13087 | p += 4; | |
13088 | /* Offset to stub section, written later. */ | |
13089 | p += 4; | |
13090 | /* stub section size. */ | |
d4aaa2a0 | 13091 | bfd_put_32 (htab->elf.dynobj, group->stub_sec->size, p); |
da44f4e5 AM |
13092 | p += 4; |
13093 | /* Augmentation. */ | |
13094 | p += 1; | |
d4aaa2a0 AM |
13095 | if (group->tls_get_addr_opt_bctrl != -1u) |
13096 | { | |
13097 | unsigned int to_bctrl = group->tls_get_addr_opt_bctrl / 4; | |
13098 | ||
13099 | /* This FDE needs more than just the default. | |
13100 | Describe __tls_get_addr_opt stub LR. */ | |
13101 | if (to_bctrl < 64) | |
13102 | *p++ = DW_CFA_advance_loc + to_bctrl; | |
13103 | else if (to_bctrl < 256) | |
13104 | { | |
13105 | *p++ = DW_CFA_advance_loc1; | |
13106 | *p++ = to_bctrl; | |
13107 | } | |
13108 | else if (to_bctrl < 65536) | |
13109 | { | |
13110 | *p++ = DW_CFA_advance_loc2; | |
13111 | bfd_put_16 (htab->elf.dynobj, to_bctrl, p); | |
13112 | p += 2; | |
13113 | } | |
13114 | else | |
13115 | { | |
13116 | *p++ = DW_CFA_advance_loc4; | |
13117 | bfd_put_32 (htab->elf.dynobj, to_bctrl, p); | |
13118 | p += 4; | |
13119 | } | |
13120 | *p++ = DW_CFA_offset_extended_sf; | |
13121 | *p++ = 65; | |
13122 | *p++ = -(STK_LINKER (htab) / 8) & 0x7f; | |
13123 | *p++ = DW_CFA_advance_loc + 4; | |
13124 | *p++ = DW_CFA_restore_extended; | |
13125 | *p++ = 65; | |
13126 | } | |
da44f4e5 | 13127 | /* Pad. */ |
d4aaa2a0 | 13128 | p = last_fde + last_fde_len + 4; |
da44f4e5 AM |
13129 | } |
13130 | if (htab->glink != NULL && htab->glink->size != 0) | |
13131 | { | |
13132 | last_fde = p; | |
2e0ce1c8 | 13133 | last_fde_len = ((24 + align - 1) & -align) - 4; |
da44f4e5 | 13134 | /* FDE length. */ |
2e0ce1c8 | 13135 | bfd_put_32 (htab->elf.dynobj, last_fde_len, p); |
da44f4e5 AM |
13136 | p += 4; |
13137 | /* CIE pointer. */ | |
13138 | val = p - htab->glink_eh_frame->contents; | |
13139 | bfd_put_32 (htab->elf.dynobj, val, p); | |
13140 | p += 4; | |
13141 | /* Offset to .glink, written later. */ | |
13142 | p += 4; | |
13143 | /* .glink size. */ | |
13144 | bfd_put_32 (htab->elf.dynobj, htab->glink->size - 8, p); | |
13145 | p += 4; | |
13146 | /* Augmentation. */ | |
13147 | p += 1; | |
13148 | ||
13149 | *p++ = DW_CFA_advance_loc + 1; | |
13150 | *p++ = DW_CFA_register; | |
13151 | *p++ = 65; | |
9f08fa5c | 13152 | *p++ = htab->opd_abi ? 12 : 0; |
15a3a14f | 13153 | *p++ = DW_CFA_advance_loc + (htab->opd_abi ? 5 : 7); |
da44f4e5 AM |
13154 | *p++ = DW_CFA_restore_extended; |
13155 | *p++ = 65; | |
2e0ce1c8 | 13156 | p += ((24 + align - 1) & -align) - 24; |
da44f4e5 AM |
13157 | } |
13158 | /* Subsume any padding into the last FDE if user .eh_frame | |
13159 | sections are aligned more than glink_eh_frame. Otherwise any | |
13160 | zero padding will be seen as a terminator. */ | |
2e0ce1c8 | 13161 | align = 1ul << htab->glink_eh_frame->output_section->alignment_power; |
da44f4e5 | 13162 | size = p - htab->glink_eh_frame->contents; |
2e0ce1c8 | 13163 | pad = ((size + align - 1) & -align) - size; |
da44f4e5 AM |
13164 | htab->glink_eh_frame->size = size + pad; |
13165 | bfd_put_32 (htab->elf.dynobj, last_fde_len + pad, last_fde); | |
13166 | } | |
13167 | ||
d969d15f AM |
13168 | maybe_strip_output (info, htab->brlt); |
13169 | if (htab->glink_eh_frame != NULL) | |
13170 | maybe_strip_output (info, htab->glink_eh_frame); | |
721956f4 | 13171 | |
b34976b6 | 13172 | return TRUE; |
721956f4 AM |
13173 | } |
13174 | ||
13175 | /* Called after we have determined section placement. If sections | |
805fc799 | 13176 | move, we'll be called again. Provide a value for TOCstart. */ |
721956f4 | 13177 | |
805fc799 | 13178 | bfd_vma |
1c865ab2 | 13179 | ppc64_elf_set_toc (struct bfd_link_info *info, bfd *obfd) |
721956f4 | 13180 | { |
805fc799 | 13181 | asection *s; |
a27e685f | 13182 | bfd_vma TOCstart, adjust; |
721956f4 | 13183 | |
43417696 AM |
13184 | if (info != NULL) |
13185 | { | |
13186 | struct elf_link_hash_entry *h; | |
13187 | struct elf_link_hash_table *htab = elf_hash_table (info); | |
13188 | ||
13189 | if (is_elf_hash_table (htab) | |
13190 | && htab->hgot != NULL) | |
13191 | h = htab->hgot; | |
13192 | else | |
13193 | { | |
13194 | h = elf_link_hash_lookup (htab, ".TOC.", FALSE, FALSE, TRUE); | |
13195 | if (is_elf_hash_table (htab)) | |
13196 | htab->hgot = h; | |
13197 | } | |
13198 | if (h != NULL | |
13199 | && h->root.type == bfd_link_hash_defined | |
13200 | && !h->root.linker_def | |
13201 | && (!is_elf_hash_table (htab) | |
13202 | || h->def_regular)) | |
13203 | { | |
13204 | TOCstart = (h->root.u.def.value - TOC_BASE_OFF | |
13205 | + h->root.u.def.section->output_offset | |
13206 | + h->root.u.def.section->output_section->vma); | |
13207 | _bfd_set_gp_value (obfd, TOCstart); | |
13208 | return TOCstart; | |
13209 | } | |
13210 | } | |
13211 | ||
805fc799 AM |
13212 | /* The TOC consists of sections .got, .toc, .tocbss, .plt in that |
13213 | order. The TOC starts where the first of these sections starts. */ | |
13214 | s = bfd_get_section_by_name (obfd, ".got"); | |
e054468f | 13215 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
805fc799 | 13216 | s = bfd_get_section_by_name (obfd, ".toc"); |
e054468f | 13217 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
805fc799 | 13218 | s = bfd_get_section_by_name (obfd, ".tocbss"); |
e054468f | 13219 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
805fc799 | 13220 | s = bfd_get_section_by_name (obfd, ".plt"); |
e054468f | 13221 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
805fc799 AM |
13222 | { |
13223 | /* This may happen for | |
13224 | o references to TOC base (SYM@toc / TOC[tc0]) without a | |
13225 | .toc directive | |
13226 | o bad linker script | |
13227 | o --gc-sections and empty TOC sections | |
13228 | ||
13229 | FIXME: Warn user? */ | |
13230 | ||
13231 | /* Look for a likely section. We probably won't even be | |
13232 | using TOCstart. */ | |
13233 | for (s = obfd->sections; s != NULL; s = s->next) | |
e054468f AM |
13234 | if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY |
13235 | | SEC_EXCLUDE)) | |
805fc799 AM |
13236 | == (SEC_ALLOC | SEC_SMALL_DATA)) |
13237 | break; | |
721956f4 | 13238 | if (s == NULL) |
805fc799 | 13239 | for (s = obfd->sections; s != NULL; s = s->next) |
e054468f | 13240 | if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_EXCLUDE)) |
805fc799 AM |
13241 | == (SEC_ALLOC | SEC_SMALL_DATA)) |
13242 | break; | |
721956f4 | 13243 | if (s == NULL) |
805fc799 | 13244 | for (s = obfd->sections; s != NULL; s = s->next) |
e054468f AM |
13245 | if ((s->flags & (SEC_ALLOC | SEC_READONLY | SEC_EXCLUDE)) |
13246 | == SEC_ALLOC) | |
805fc799 | 13247 | break; |
721956f4 | 13248 | if (s == NULL) |
805fc799 | 13249 | for (s = obfd->sections; s != NULL; s = s->next) |
e054468f | 13250 | if ((s->flags & (SEC_ALLOC | SEC_EXCLUDE)) == SEC_ALLOC) |
805fc799 AM |
13251 | break; |
13252 | } | |
721956f4 | 13253 | |
805fc799 AM |
13254 | TOCstart = 0; |
13255 | if (s != NULL) | |
13256 | TOCstart = s->output_section->vma + s->output_offset; | |
721956f4 | 13257 | |
a27e685f AM |
13258 | /* Force alignment. */ |
13259 | adjust = TOCstart & (TOC_BASE_ALIGN - 1); | |
13260 | TOCstart -= adjust; | |
1c865ab2 AM |
13261 | _bfd_set_gp_value (obfd, TOCstart); |
13262 | ||
810d4e75 | 13263 | if (info != NULL && s != NULL) |
1c865ab2 AM |
13264 | { |
13265 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
13266 | ||
810d4e75 AM |
13267 | if (htab != NULL) |
13268 | { | |
13269 | if (htab->elf.hgot != NULL) | |
13270 | { | |
a27e685f | 13271 | htab->elf.hgot->root.u.def.value = TOC_BASE_OFF - adjust; |
810d4e75 AM |
13272 | htab->elf.hgot->root.u.def.section = s; |
13273 | } | |
13274 | } | |
13275 | else | |
1c865ab2 | 13276 | { |
810d4e75 AM |
13277 | struct bfd_link_hash_entry *bh = NULL; |
13278 | _bfd_generic_link_add_one_symbol (info, obfd, ".TOC.", BSF_GLOBAL, | |
a27e685f AM |
13279 | s, TOC_BASE_OFF - adjust, |
13280 | NULL, FALSE, FALSE, &bh); | |
1c865ab2 AM |
13281 | } |
13282 | } | |
805fc799 | 13283 | return TOCstart; |
721956f4 AM |
13284 | } |
13285 | ||
a345bc8d | 13286 | /* Called via elf_link_hash_traverse from ppc64_elf_build_stubs to |
49c09209 | 13287 | write out any global entry stubs, and PLT relocations. */ |
a345bc8d AM |
13288 | |
13289 | static bfd_boolean | |
49c09209 | 13290 | build_global_entry_stubs_and_plt (struct elf_link_hash_entry *h, void *inf) |
a345bc8d AM |
13291 | { |
13292 | struct bfd_link_info *info; | |
13293 | struct ppc_link_hash_table *htab; | |
49c09209 | 13294 | struct plt_entry *ent; |
a345bc8d AM |
13295 | asection *s; |
13296 | ||
13297 | if (h->root.type == bfd_link_hash_indirect) | |
13298 | return TRUE; | |
13299 | ||
49c09209 AM |
13300 | info = inf; |
13301 | htab = ppc_hash_table (info); | |
13302 | if (htab == NULL) | |
13303 | return FALSE; | |
13304 | ||
13305 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) | |
13306 | if (ent->plt.offset != (bfd_vma) -1) | |
13307 | { | |
13308 | /* This symbol has an entry in the procedure linkage | |
13309 | table. Set it up. */ | |
13310 | Elf_Internal_Rela rela; | |
2d7ad24e | 13311 | asection *plt, *relplt; |
49c09209 AM |
13312 | bfd_byte *loc; |
13313 | ||
13314 | if (!htab->elf.dynamic_sections_created | |
13315 | || h->dynindx == -1) | |
13316 | { | |
13317 | if (!(h->def_regular | |
13318 | && (h->root.type == bfd_link_hash_defined | |
13319 | || h->root.type == bfd_link_hash_defweak))) | |
13320 | continue; | |
2d7ad24e AM |
13321 | if (h->type == STT_GNU_IFUNC) |
13322 | { | |
13323 | plt = htab->elf.iplt; | |
13324 | relplt = htab->elf.irelplt; | |
13325 | htab->local_ifunc_resolver = 1; | |
13326 | if (htab->opd_abi) | |
13327 | rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL); | |
13328 | else | |
13329 | rela.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE); | |
13330 | } | |
49c09209 | 13331 | else |
2d7ad24e AM |
13332 | { |
13333 | plt = htab->pltlocal; | |
13334 | if (bfd_link_pic (info)) | |
13335 | { | |
13336 | relplt = htab->relpltlocal; | |
13337 | if (htab->opd_abi) | |
13338 | rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_SLOT); | |
13339 | else | |
13340 | rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
13341 | } | |
13342 | else | |
13343 | relplt = NULL; | |
13344 | } | |
49c09209 AM |
13345 | rela.r_addend = (h->root.u.def.value |
13346 | + h->root.u.def.section->output_offset | |
13347 | + h->root.u.def.section->output_section->vma | |
13348 | + ent->addend); | |
2d7ad24e AM |
13349 | |
13350 | if (relplt == NULL) | |
13351 | { | |
13352 | loc = plt->contents + ent->plt.offset; | |
13353 | bfd_put_64 (info->output_bfd, rela.r_addend, loc); | |
13354 | if (htab->opd_abi) | |
13355 | { | |
13356 | bfd_vma toc = elf_gp (info->output_bfd); | |
13357 | toc += htab->sec_info[h->root.u.def.section->id].toc_off; | |
13358 | bfd_put_64 (info->output_bfd, toc, loc + 8); | |
13359 | } | |
13360 | } | |
13361 | else | |
13362 | { | |
13363 | rela.r_offset = (plt->output_section->vma | |
13364 | + plt->output_offset | |
13365 | + ent->plt.offset); | |
13366 | loc = relplt->contents + (relplt->reloc_count++ | |
13367 | * sizeof (Elf64_External_Rela)); | |
13368 | bfd_elf64_swap_reloca_out (info->output_bfd, &rela, loc); | |
13369 | } | |
49c09209 AM |
13370 | } |
13371 | else | |
13372 | { | |
13373 | rela.r_offset = (htab->elf.splt->output_section->vma | |
13374 | + htab->elf.splt->output_offset | |
13375 | + ent->plt.offset); | |
13376 | rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT); | |
13377 | rela.r_addend = ent->addend; | |
13378 | loc = (htab->elf.srelplt->contents | |
13379 | + ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE (htab)) | |
13380 | / PLT_ENTRY_SIZE (htab) * sizeof (Elf64_External_Rela))); | |
13381 | if (h->type == STT_GNU_IFUNC && is_static_defined (h)) | |
13382 | htab->maybe_local_ifunc_resolver = 1; | |
2d7ad24e | 13383 | bfd_elf64_swap_reloca_out (info->output_bfd, &rela, loc); |
49c09209 | 13384 | } |
49c09209 AM |
13385 | } |
13386 | ||
a345bc8d AM |
13387 | if (!h->pointer_equality_needed) |
13388 | return TRUE; | |
13389 | ||
13390 | if (h->def_regular) | |
13391 | return TRUE; | |
13392 | ||
9e390558 | 13393 | s = htab->global_entry; |
49c09209 AM |
13394 | if (s == NULL || s->size == 0) |
13395 | return TRUE; | |
13396 | ||
13397 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) | |
13398 | if (ent->plt.offset != (bfd_vma) -1 | |
13399 | && ent->addend == 0) | |
a345bc8d AM |
13400 | { |
13401 | bfd_byte *p; | |
13402 | asection *plt; | |
13403 | bfd_vma off; | |
13404 | ||
a345bc8d | 13405 | p = s->contents + h->root.u.def.value; |
33e44f2e | 13406 | plt = htab->elf.splt; |
a345bc8d AM |
13407 | if (!htab->elf.dynamic_sections_created |
13408 | || h->dynindx == -1) | |
2d7ad24e AM |
13409 | { |
13410 | if (h->type == STT_GNU_IFUNC) | |
13411 | plt = htab->elf.iplt; | |
13412 | else | |
13413 | plt = htab->pltlocal; | |
13414 | } | |
49c09209 | 13415 | off = ent->plt.offset + plt->output_offset + plt->output_section->vma; |
a345bc8d AM |
13416 | off -= h->root.u.def.value + s->output_offset + s->output_section->vma; |
13417 | ||
13418 | if (off + 0x80008000 > 0xffffffff || (off & 3) != 0) | |
13419 | { | |
13420 | info->callbacks->einfo | |
c1c8c1ef | 13421 | (_("%P: linkage table error against `%pT'\n"), |
a345bc8d AM |
13422 | h->root.root.string); |
13423 | bfd_set_error (bfd_error_bad_value); | |
13424 | htab->stub_error = TRUE; | |
13425 | } | |
13426 | ||
7341d5e2 AM |
13427 | htab->stub_count[ppc_stub_global_entry - 1] += 1; |
13428 | if (htab->params->emit_stub_syms) | |
13429 | { | |
13430 | size_t len = strlen (h->root.root.string); | |
13431 | char *name = bfd_malloc (sizeof "12345678.global_entry." + len); | |
13432 | ||
13433 | if (name == NULL) | |
13434 | return FALSE; | |
13435 | ||
13436 | sprintf (name, "%08x.global_entry.%s", s->id, h->root.root.string); | |
13437 | h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE); | |
13438 | if (h == NULL) | |
13439 | return FALSE; | |
13440 | if (h->root.type == bfd_link_hash_new) | |
13441 | { | |
13442 | h->root.type = bfd_link_hash_defined; | |
13443 | h->root.u.def.section = s; | |
13444 | h->root.u.def.value = p - s->contents; | |
13445 | h->ref_regular = 1; | |
13446 | h->def_regular = 1; | |
13447 | h->ref_regular_nonweak = 1; | |
13448 | h->forced_local = 1; | |
13449 | h->non_elf = 0; | |
2ec55de3 | 13450 | h->root.linker_def = 1; |
7341d5e2 AM |
13451 | } |
13452 | } | |
13453 | ||
a345bc8d AM |
13454 | if (PPC_HA (off) != 0) |
13455 | { | |
13456 | bfd_put_32 (s->owner, ADDIS_R12_R12 | PPC_HA (off), p); | |
13457 | p += 4; | |
13458 | } | |
13459 | bfd_put_32 (s->owner, LD_R12_0R12 | PPC_LO (off), p); | |
13460 | p += 4; | |
13461 | bfd_put_32 (s->owner, MTCTR_R12, p); | |
13462 | p += 4; | |
407aa07c | 13463 | bfd_put_32 (s->owner, BCTR, p); |
a345bc8d AM |
13464 | break; |
13465 | } | |
13466 | return TRUE; | |
13467 | } | |
13468 | ||
49c09209 AM |
13469 | /* Write PLT relocs for locals. */ |
13470 | ||
13471 | static bfd_boolean | |
13472 | write_plt_relocs_for_local_syms (struct bfd_link_info *info) | |
13473 | { | |
13474 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
13475 | bfd *ibfd; | |
13476 | ||
13477 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) | |
13478 | { | |
13479 | struct got_entry **lgot_ents, **end_lgot_ents; | |
13480 | struct plt_entry **local_plt, **lplt, **end_local_plt; | |
13481 | Elf_Internal_Shdr *symtab_hdr; | |
13482 | bfd_size_type locsymcount; | |
13483 | Elf_Internal_Sym *local_syms = NULL; | |
13484 | struct plt_entry *ent; | |
13485 | ||
13486 | if (!is_ppc64_elf (ibfd)) | |
13487 | continue; | |
13488 | ||
13489 | lgot_ents = elf_local_got_ents (ibfd); | |
13490 | if (!lgot_ents) | |
13491 | continue; | |
13492 | ||
13493 | symtab_hdr = &elf_symtab_hdr (ibfd); | |
13494 | locsymcount = symtab_hdr->sh_info; | |
13495 | end_lgot_ents = lgot_ents + locsymcount; | |
13496 | local_plt = (struct plt_entry **) end_lgot_ents; | |
13497 | end_local_plt = local_plt + locsymcount; | |
13498 | for (lplt = local_plt; lplt < end_local_plt; ++lplt) | |
13499 | for (ent = *lplt; ent != NULL; ent = ent->next) | |
13500 | if (ent->plt.offset != (bfd_vma) -1) | |
13501 | { | |
13502 | Elf_Internal_Sym *sym; | |
13503 | asection *sym_sec; | |
13504 | asection *plt, *relplt; | |
13505 | bfd_byte *loc; | |
13506 | bfd_vma val; | |
49c09209 AM |
13507 | |
13508 | if (!get_sym_h (NULL, &sym, &sym_sec, NULL, &local_syms, | |
13509 | lplt - local_plt, ibfd)) | |
13510 | { | |
13511 | if (local_syms != NULL | |
13512 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
13513 | free (local_syms); | |
13514 | return FALSE; | |
13515 | } | |
13516 | ||
13517 | val = sym->st_value + ent->addend; | |
13518 | val += PPC64_LOCAL_ENTRY_OFFSET (sym->st_other); | |
13519 | if (sym_sec != NULL && sym_sec->output_section != NULL) | |
13520 | val += sym_sec->output_offset + sym_sec->output_section->vma; | |
13521 | ||
2d7ad24e AM |
13522 | if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) |
13523 | { | |
13524 | htab->local_ifunc_resolver = 1; | |
13525 | plt = htab->elf.iplt; | |
13526 | relplt = htab->elf.irelplt; | |
13527 | } | |
13528 | else | |
13529 | { | |
13530 | plt = htab->pltlocal; | |
13531 | relplt = bfd_link_pic (info) ? htab->relpltlocal : NULL; | |
13532 | } | |
49c09209 | 13533 | |
2d7ad24e AM |
13534 | if (relplt == NULL) |
13535 | { | |
13536 | loc = plt->contents + ent->plt.offset; | |
13537 | bfd_put_64 (info->output_bfd, val, loc); | |
13538 | if (htab->opd_abi) | |
13539 | { | |
13540 | bfd_vma toc = elf_gp (ibfd); | |
13541 | bfd_put_64 (info->output_bfd, toc, loc + 8); | |
13542 | } | |
13543 | } | |
49c09209 | 13544 | else |
2d7ad24e AM |
13545 | { |
13546 | Elf_Internal_Rela rela; | |
13547 | rela.r_offset = (ent->plt.offset | |
13548 | + plt->output_offset | |
13549 | + plt->output_section->vma); | |
13550 | if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
13551 | { | |
13552 | if (htab->opd_abi) | |
13553 | rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL); | |
13554 | else | |
13555 | rela.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE); | |
13556 | } | |
13557 | else | |
13558 | { | |
13559 | if (htab->opd_abi) | |
13560 | rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_SLOT); | |
13561 | else | |
13562 | rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
13563 | } | |
13564 | rela.r_addend = val; | |
13565 | loc = relplt->contents + (relplt->reloc_count++ | |
13566 | * sizeof (Elf64_External_Rela)); | |
13567 | bfd_elf64_swap_reloca_out (info->output_bfd, &rela, loc); | |
13568 | } | |
49c09209 AM |
13569 | } |
13570 | ||
13571 | if (local_syms != NULL | |
13572 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
13573 | { | |
13574 | if (!info->keep_memory) | |
13575 | free (local_syms); | |
13576 | else | |
13577 | symtab_hdr->contents = (unsigned char *) local_syms; | |
13578 | } | |
13579 | } | |
13580 | return TRUE; | |
13581 | } | |
13582 | ||
721956f4 AM |
13583 | /* Build all the stubs associated with the current output file. |
13584 | The stubs are kept in a hash table attached to the main linker | |
13585 | hash table. This function is called via gldelf64ppc_finish. */ | |
13586 | ||
b34976b6 | 13587 | bfd_boolean |
e7d1c40c | 13588 | ppc64_elf_build_stubs (struct bfd_link_info *info, |
4ce794b7 | 13589 | char **stats) |
5d1634d7 AM |
13590 | { |
13591 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
a4b6fadd | 13592 | struct map_stub *group; |
721956f4 | 13593 | asection *stub_sec; |
5d1634d7 | 13594 | bfd_byte *p; |
e717da7e | 13595 | int stub_sec_count = 0; |
5d1634d7 | 13596 | |
4dfe6ac6 NC |
13597 | if (htab == NULL) |
13598 | return FALSE; | |
13599 | ||
eea6121a | 13600 | /* Allocate memory to hold the linker stubs. */ |
d4aaa2a0 AM |
13601 | for (group = htab->group; group != NULL; group = group->next) |
13602 | if ((stub_sec = group->stub_sec) != NULL | |
eea6121a | 13603 | && stub_sec->size != 0) |
e717da7e | 13604 | { |
e7d1c40c | 13605 | stub_sec->contents = bfd_zalloc (htab->params->stub_bfd, stub_sec->size); |
eea6121a AM |
13606 | if (stub_sec->contents == NULL) |
13607 | return FALSE; | |
eea6121a | 13608 | stub_sec->size = 0; |
e717da7e | 13609 | } |
5d1634d7 | 13610 | |
23eb7e01 | 13611 | if (htab->glink != NULL && htab->glink->size != 0) |
5d1634d7 | 13612 | { |
9f951329 | 13613 | unsigned int indx; |
ad8e1ba5 | 13614 | bfd_vma plt0; |
9f951329 | 13615 | |
721956f4 | 13616 | /* Build the .glink plt call stub. */ |
e7d1c40c | 13617 | if (htab->params->emit_stub_syms) |
97b639ba AM |
13618 | { |
13619 | struct elf_link_hash_entry *h; | |
468392fb AM |
13620 | h = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve", |
13621 | TRUE, FALSE, FALSE); | |
97b639ba AM |
13622 | if (h == NULL) |
13623 | return FALSE; | |
13624 | if (h->root.type == bfd_link_hash_new) | |
13625 | { | |
13626 | h->root.type = bfd_link_hash_defined; | |
13627 | h->root.u.def.section = htab->glink; | |
ee4bf8d2 | 13628 | h->root.u.def.value = 8; |
f5385ebf AM |
13629 | h->ref_regular = 1; |
13630 | h->def_regular = 1; | |
13631 | h->ref_regular_nonweak = 1; | |
13632 | h->forced_local = 1; | |
13633 | h->non_elf = 0; | |
2ec55de3 | 13634 | h->root.linker_def = 1; |
97b639ba AM |
13635 | } |
13636 | } | |
33e44f2e AM |
13637 | plt0 = (htab->elf.splt->output_section->vma |
13638 | + htab->elf.splt->output_offset | |
13639 | - 16); | |
176a0d42 AM |
13640 | if (info->emitrelocations) |
13641 | { | |
13642 | Elf_Internal_Rela *r = get_relocs (htab->glink, 1); | |
13643 | if (r == NULL) | |
13644 | return FALSE; | |
13645 | r->r_offset = (htab->glink->output_offset | |
13646 | + htab->glink->output_section->vma); | |
13647 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL64); | |
13648 | r->r_addend = plt0; | |
13649 | } | |
4ce794b7 | 13650 | p = htab->glink->contents; |
176a0d42 | 13651 | plt0 -= htab->glink->output_section->vma + htab->glink->output_offset; |
ee4bf8d2 AM |
13652 | bfd_put_64 (htab->glink->owner, plt0, p); |
13653 | p += 8; | |
b9e5796b AM |
13654 | if (htab->opd_abi) |
13655 | { | |
13656 | bfd_put_32 (htab->glink->owner, MFLR_R12, p); | |
13657 | p += 4; | |
13658 | bfd_put_32 (htab->glink->owner, BCL_20_31, p); | |
13659 | p += 4; | |
13660 | bfd_put_32 (htab->glink->owner, MFLR_R11, p); | |
13661 | p += 4; | |
13662 | bfd_put_32 (htab->glink->owner, LD_R2_0R11 | (-16 & 0xfffc), p); | |
13663 | p += 4; | |
13664 | bfd_put_32 (htab->glink->owner, MTLR_R12, p); | |
13665 | p += 4; | |
13666 | bfd_put_32 (htab->glink->owner, ADD_R11_R2_R11, p); | |
13667 | p += 4; | |
13668 | bfd_put_32 (htab->glink->owner, LD_R12_0R11, p); | |
13669 | p += 4; | |
13670 | bfd_put_32 (htab->glink->owner, LD_R2_0R11 | 8, p); | |
13671 | p += 4; | |
13672 | bfd_put_32 (htab->glink->owner, MTCTR_R12, p); | |
13673 | p += 4; | |
13674 | bfd_put_32 (htab->glink->owner, LD_R11_0R11 | 16, p); | |
13675 | p += 4; | |
13676 | } | |
13677 | else | |
13678 | { | |
13679 | bfd_put_32 (htab->glink->owner, MFLR_R0, p); | |
13680 | p += 4; | |
13681 | bfd_put_32 (htab->glink->owner, BCL_20_31, p); | |
13682 | p += 4; | |
13683 | bfd_put_32 (htab->glink->owner, MFLR_R11, p); | |
13684 | p += 4; | |
f378ab09 AM |
13685 | bfd_put_32 (htab->glink->owner, STD_R2_0R1 + 24, p); |
13686 | p += 4; | |
b9e5796b AM |
13687 | bfd_put_32 (htab->glink->owner, LD_R2_0R11 | (-16 & 0xfffc), p); |
13688 | p += 4; | |
13689 | bfd_put_32 (htab->glink->owner, MTLR_R0, p); | |
13690 | p += 4; | |
13691 | bfd_put_32 (htab->glink->owner, SUB_R12_R12_R11, p); | |
13692 | p += 4; | |
13693 | bfd_put_32 (htab->glink->owner, ADD_R11_R2_R11, p); | |
13694 | p += 4; | |
13695 | bfd_put_32 (htab->glink->owner, ADDI_R0_R12 | (-48 & 0xffff), p); | |
13696 | p += 4; | |
13697 | bfd_put_32 (htab->glink->owner, LD_R12_0R11, p); | |
13698 | p += 4; | |
13699 | bfd_put_32 (htab->glink->owner, SRDI_R0_R0_2, p); | |
13700 | p += 4; | |
13701 | bfd_put_32 (htab->glink->owner, MTCTR_R12, p); | |
13702 | p += 4; | |
13703 | bfd_put_32 (htab->glink->owner, LD_R11_0R11 | 8, p); | |
13704 | p += 4; | |
13705 | } | |
407aa07c AM |
13706 | bfd_put_32 (htab->glink->owner, BCTR, p); |
13707 | p += 4; | |
c75bc4f7 | 13708 | BFD_ASSERT (p == htab->glink->contents + GLINK_PLTRESOLVE_SIZE (htab)); |
ad8e1ba5 | 13709 | |
9f951329 AM |
13710 | /* Build the .glink lazy link call stubs. */ |
13711 | indx = 0; | |
9e390558 | 13712 | while (p < htab->glink->contents + htab->glink->size) |
9f951329 | 13713 | { |
b9e5796b | 13714 | if (htab->opd_abi) |
9f951329 | 13715 | { |
b9e5796b AM |
13716 | if (indx < 0x8000) |
13717 | { | |
13718 | bfd_put_32 (htab->glink->owner, LI_R0_0 | indx, p); | |
13719 | p += 4; | |
13720 | } | |
13721 | else | |
13722 | { | |
13723 | bfd_put_32 (htab->glink->owner, LIS_R0_0 | PPC_HI (indx), p); | |
13724 | p += 4; | |
13725 | bfd_put_32 (htab->glink->owner, ORI_R0_R0_0 | PPC_LO (indx), | |
13726 | p); | |
13727 | p += 4; | |
13728 | } | |
9f951329 | 13729 | } |
4ce794b7 | 13730 | bfd_put_32 (htab->glink->owner, |
ee4bf8d2 | 13731 | B_DOT | ((htab->glink->contents - p + 8) & 0x3fffffc), p); |
a16d5acb | 13732 | indx++; |
9f951329 AM |
13733 | p += 4; |
13734 | } | |
5d1634d7 | 13735 | } |
5d1634d7 | 13736 | |
49c09209 AM |
13737 | /* Build .glink global entry stubs, and PLT relocs for globals. */ |
13738 | elf_link_hash_traverse (&htab->elf, build_global_entry_stubs_and_plt, info); | |
13739 | ||
13740 | if (!write_plt_relocs_for_local_syms (info)) | |
13741 | return FALSE; | |
9e390558 | 13742 | |
7341d5e2 | 13743 | if (htab->brlt != NULL && htab->brlt->size != 0) |
721956f4 | 13744 | { |
4ce794b7 | 13745 | htab->brlt->contents = bfd_zalloc (htab->brlt->owner, |
eea6121a | 13746 | htab->brlt->size); |
4ce794b7 | 13747 | if (htab->brlt->contents == NULL) |
b34976b6 | 13748 | return FALSE; |
721956f4 | 13749 | } |
ee75fd95 | 13750 | if (htab->relbrlt != NULL && htab->relbrlt->size != 0) |
63bc6f6c AM |
13751 | { |
13752 | htab->relbrlt->contents = bfd_zalloc (htab->relbrlt->owner, | |
eea6121a | 13753 | htab->relbrlt->size); |
63bc6f6c AM |
13754 | if (htab->relbrlt->contents == NULL) |
13755 | return FALSE; | |
13756 | } | |
5d1634d7 | 13757 | |
721956f4 AM |
13758 | /* Build the stubs as directed by the stub hash table. */ |
13759 | bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info); | |
5d1634d7 | 13760 | |
a4b6fadd AM |
13761 | for (group = htab->group; group != NULL; group = group->next) |
13762 | if (group->needs_save_res) | |
7dda8d3c | 13763 | group->stub_sec->size += htab->sfpr->size; |
a4b6fadd | 13764 | |
aa8a7074 AM |
13765 | if (htab->relbrlt != NULL) |
13766 | htab->relbrlt->reloc_count = 0; | |
13767 | ||
e7d1c40c | 13768 | if (htab->params->plt_stub_align != 0) |
d4aaa2a0 AM |
13769 | for (group = htab->group; group != NULL; group = group->next) |
13770 | if ((stub_sec = group->stub_sec) != NULL) | |
691d2e9a AM |
13771 | { |
13772 | int align = abs (htab->params->plt_stub_align); | |
13773 | stub_sec->size = (stub_sec->size + (1 << align) - 1) & -(1 << align); | |
13774 | } | |
794e51c0 | 13775 | |
7dda8d3c AM |
13776 | for (group = htab->group; group != NULL; group = group->next) |
13777 | if (group->needs_save_res) | |
13778 | { | |
13779 | stub_sec = group->stub_sec; | |
13780 | memcpy (stub_sec->contents + stub_sec->size - htab->sfpr->size, | |
13781 | htab->sfpr->contents, htab->sfpr->size); | |
13782 | if (htab->params->emit_stub_syms) | |
13783 | { | |
13784 | unsigned int i; | |
13785 | ||
13786 | for (i = 0; i < ARRAY_SIZE (save_res_funcs); i++) | |
13787 | if (!sfpr_define (info, &save_res_funcs[i], stub_sec)) | |
13788 | return FALSE; | |
13789 | } | |
13790 | } | |
13791 | ||
d4aaa2a0 AM |
13792 | for (group = htab->group; group != NULL; group = group->next) |
13793 | if ((stub_sec = group->stub_sec) != NULL) | |
e717da7e AM |
13794 | { |
13795 | stub_sec_count += 1; | |
c9301e31 AM |
13796 | if (stub_sec->rawsize != stub_sec->size |
13797 | && (htab->stub_iteration <= STUB_SHRINK_ITER | |
13798 | || stub_sec->rawsize < stub_sec->size)) | |
e717da7e AM |
13799 | break; |
13800 | } | |
5d1634d7 | 13801 | |
25516cc5 | 13802 | if (group != NULL) |
5d1634d7 | 13803 | { |
b34976b6 | 13804 | htab->stub_error = TRUE; |
cf97bcb0 | 13805 | _bfd_error_handler (_("stubs don't match calculated size")); |
5d1634d7 | 13806 | } |
721956f4 | 13807 | |
d2a300cf AM |
13808 | if (htab->stub_error) |
13809 | return FALSE; | |
13810 | ||
13811 | if (stats != NULL) | |
13812 | { | |
db84fff3 | 13813 | size_t len; |
d2a300cf AM |
13814 | *stats = bfd_malloc (500); |
13815 | if (*stats == NULL) | |
13816 | return FALSE; | |
13817 | ||
db84fff3 AM |
13818 | len = sprintf (*stats, |
13819 | ngettext ("linker stubs in %u group\n", | |
13820 | "linker stubs in %u groups\n", | |
13821 | stub_sec_count), | |
13822 | stub_sec_count); | |
13823 | sprintf (*stats + len, _(" branch %lu\n" | |
13824 | " toc adjust %lu\n" | |
13825 | " long branch %lu\n" | |
13826 | " long toc adj %lu\n" | |
13827 | " plt call %lu\n" | |
13828 | " plt call toc %lu\n" | |
13829 | " global entry %lu"), | |
4ce794b7 AM |
13830 | htab->stub_count[ppc_stub_long_branch - 1], |
13831 | htab->stub_count[ppc_stub_long_branch_r2off - 1], | |
13832 | htab->stub_count[ppc_stub_plt_branch - 1], | |
13833 | htab->stub_count[ppc_stub_plt_branch_r2off - 1], | |
794e51c0 | 13834 | htab->stub_count[ppc_stub_plt_call - 1], |
7341d5e2 AM |
13835 | htab->stub_count[ppc_stub_plt_call_r2save - 1], |
13836 | htab->stub_count[ppc_stub_global_entry - 1]); | |
d2a300cf AM |
13837 | } |
13838 | return TRUE; | |
5bd4f169 AM |
13839 | } |
13840 | ||
60124e18 AM |
13841 | /* What to do when ld finds relocations against symbols defined in |
13842 | discarded sections. */ | |
13843 | ||
13844 | static unsigned int | |
13845 | ppc64_elf_action_discarded (asection *sec) | |
13846 | { | |
13847 | if (strcmp (".opd", sec->name) == 0) | |
13848 | return 0; | |
13849 | ||
13850 | if (strcmp (".toc", sec->name) == 0) | |
13851 | return 0; | |
13852 | ||
bce50a28 JJ |
13853 | if (strcmp (".toc1", sec->name) == 0) |
13854 | return 0; | |
13855 | ||
60124e18 AM |
13856 | return _bfd_elf_default_action_discarded (sec); |
13857 | } | |
13858 | ||
5bd4f169 AM |
13859 | /* The RELOCATE_SECTION function is called by the ELF backend linker |
13860 | to handle the relocations for a section. | |
13861 | ||
13862 | The relocs are always passed as Rela structures; if the section | |
13863 | actually uses Rel structures, the r_addend field will always be | |
13864 | zero. | |
13865 | ||
13866 | This function is responsible for adjust the section contents as | |
13867 | necessary, and (if using Rela relocs and generating a | |
1049f94e | 13868 | relocatable output file) adjusting the reloc addend as |
5bd4f169 AM |
13869 | necessary. |
13870 | ||
13871 | This function does not have to worry about setting the reloc | |
13872 | address or the reloc symbol index. | |
13873 | ||
13874 | LOCAL_SYMS is a pointer to the swapped in local symbols. | |
13875 | ||
13876 | LOCAL_SECTIONS is an array giving the section in the input file | |
13877 | corresponding to the st_shndx field of each local symbol. | |
13878 | ||
13879 | The global hash table entry for the global symbols can be found | |
13880 | via elf_sym_hashes (input_bfd). | |
13881 | ||
1049f94e | 13882 | When generating relocatable output, this function must handle |
5bd4f169 AM |
13883 | STB_LOCAL/STT_SECTION symbols specially. The output symbol is |
13884 | going to be the section symbol corresponding to the output | |
13885 | section, which means that the addend must be adjusted | |
13886 | accordingly. */ | |
13887 | ||
b34976b6 | 13888 | static bfd_boolean |
4ce794b7 AM |
13889 | ppc64_elf_relocate_section (bfd *output_bfd, |
13890 | struct bfd_link_info *info, | |
13891 | bfd *input_bfd, | |
13892 | asection *input_section, | |
13893 | bfd_byte *contents, | |
13894 | Elf_Internal_Rela *relocs, | |
13895 | Elf_Internal_Sym *local_syms, | |
13896 | asection **local_sections) | |
5bd4f169 | 13897 | { |
65f38f15 | 13898 | struct ppc_link_hash_table *htab; |
5bd4f169 AM |
13899 | Elf_Internal_Shdr *symtab_hdr; |
13900 | struct elf_link_hash_entry **sym_hashes; | |
5bd4f169 | 13901 | Elf_Internal_Rela *rel; |
c316a17c | 13902 | Elf_Internal_Rela *wrel; |
5bd4f169 | 13903 | Elf_Internal_Rela *relend; |
411e1bfb AM |
13904 | Elf_Internal_Rela outrel; |
13905 | bfd_byte *loc; | |
411e1bfb | 13906 | struct got_entry **local_got_ents; |
5bd4f169 | 13907 | bfd_vma TOCstart; |
b34976b6 AM |
13908 | bfd_boolean ret = TRUE; |
13909 | bfd_boolean is_opd; | |
794e51c0 AM |
13910 | /* Assume 'at' branch hints. */ |
13911 | bfd_boolean is_isa_v2 = TRUE; | |
95f0d0d2 | 13912 | bfd_vma d_offset = (bfd_big_endian (input_bfd) ? 2 : 0); |
5bd4f169 | 13913 | |
65f38f15 | 13914 | /* Initialize howto table if needed. */ |
5bd4f169 | 13915 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) |
5bd4f169 AM |
13916 | ppc_howto_init (); |
13917 | ||
65f38f15 | 13918 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
13919 | if (htab == NULL) |
13920 | return FALSE; | |
ee75fd95 AM |
13921 | |
13922 | /* Don't relocate stub sections. */ | |
e7d1c40c | 13923 | if (input_section->owner == htab->params->stub_bfd) |
ee75fd95 AM |
13924 | return TRUE; |
13925 | ||
0c8d6e5c | 13926 | BFD_ASSERT (is_ppc64_elf (input_bfd)); |
0ffa91dd | 13927 | |
411e1bfb | 13928 | local_got_ents = elf_local_got_ents (input_bfd); |
5bd4f169 | 13929 | TOCstart = elf_gp (output_bfd); |
0ffa91dd | 13930 | symtab_hdr = &elf_symtab_hdr (input_bfd); |
5bd4f169 | 13931 | sym_hashes = elf_sym_hashes (input_bfd); |
7c8fe5c4 | 13932 | is_opd = ppc64_elf_section_data (input_section)->sec_type == sec_opd; |
65f38f15 | 13933 | |
c316a17c | 13934 | rel = wrel = relocs; |
5bd4f169 | 13935 | relend = relocs + input_section->reloc_count; |
c316a17c | 13936 | for (; rel < relend; wrel++, rel++) |
5bd4f169 | 13937 | { |
04c9666a | 13938 | enum elf_ppc64_reloc_type r_type; |
31c76678 | 13939 | bfd_vma addend; |
5bd4f169 AM |
13940 | bfd_reloc_status_type r; |
13941 | Elf_Internal_Sym *sym; | |
13942 | asection *sec; | |
039b3fef AM |
13943 | struct elf_link_hash_entry *h_elf; |
13944 | struct ppc_link_hash_entry *h; | |
13945 | struct ppc_link_hash_entry *fdh; | |
5bd4f169 | 13946 | const char *sym_name; |
0d4792f7 | 13947 | unsigned long r_symndx, toc_symndx; |
3a71aa26 | 13948 | bfd_vma toc_addend; |
f961d9dd AM |
13949 | unsigned char tls_mask, tls_gd, tls_type; |
13950 | unsigned char sym_type; | |
5bd4f169 | 13951 | bfd_vma relocation; |
23cedd1d | 13952 | bfd_boolean unresolved_reloc, save_unresolved_reloc; |
b34976b6 | 13953 | bfd_boolean warned; |
bc30df16 | 13954 | enum { DEST_NORMAL, DEST_OPD, DEST_STUB } reloc_dest; |
67f0cbdb | 13955 | unsigned int insn; |
e11840f9 | 13956 | unsigned int mask; |
721956f4 AM |
13957 | struct ppc_stub_hash_entry *stub_entry; |
13958 | bfd_vma max_br_offset; | |
13959 | bfd_vma from; | |
c316a17c | 13960 | Elf_Internal_Rela orig_rel; |
b80eed39 AM |
13961 | reloc_howto_type *howto; |
13962 | struct reloc_howto_struct alt_howto; | |
5bd4f169 | 13963 | |
c316a17c AM |
13964 | again: |
13965 | orig_rel = *rel; | |
13966 | ||
4ce794b7 | 13967 | r_type = ELF64_R_TYPE (rel->r_info); |
5bd4f169 | 13968 | r_symndx = ELF64_R_SYM (rel->r_info); |
ee87f2da AM |
13969 | |
13970 | /* For old style R_PPC64_TOC relocs with a zero symbol, use the | |
13971 | symbol of the previous ADDR64 reloc. The symbol gives us the | |
13972 | proper TOC base to use. */ | |
13973 | if (rel->r_info == ELF64_R_INFO (0, R_PPC64_TOC) | |
c316a17c AM |
13974 | && wrel != relocs |
13975 | && ELF64_R_TYPE (wrel[-1].r_info) == R_PPC64_ADDR64 | |
ee87f2da | 13976 | && is_opd) |
c316a17c | 13977 | r_symndx = ELF64_R_SYM (wrel[-1].r_info); |
ee87f2da | 13978 | |
4ce794b7 AM |
13979 | sym = NULL; |
13980 | sec = NULL; | |
039b3fef | 13981 | h_elf = NULL; |
4ce794b7 | 13982 | sym_name = NULL; |
b34976b6 AM |
13983 | unresolved_reloc = FALSE; |
13984 | warned = FALSE; | |
65f38f15 | 13985 | |
0b13192e | 13986 | if (r_symndx < symtab_hdr->sh_info) |
5bd4f169 AM |
13987 | { |
13988 | /* It's a local symbol. */ | |
74f0fb50 | 13989 | struct _opd_sec_data *opd; |
4025353c | 13990 | |
5bd4f169 AM |
13991 | sym = local_syms + r_symndx; |
13992 | sec = local_sections[r_symndx]; | |
26c61ae5 | 13993 | sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec); |
0d4792f7 | 13994 | sym_type = ELF64_ST_TYPE (sym->st_info); |
8517fae7 | 13995 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); |
74f0fb50 AM |
13996 | opd = get_opd_info (sec); |
13997 | if (opd != NULL && opd->adjust != NULL) | |
1e2f5b6e | 13998 | { |
51aecdc5 AM |
13999 | long adjust = opd->adjust[OPD_NDX (sym->st_value |
14000 | + rel->r_addend)]; | |
4025353c AM |
14001 | if (adjust == -1) |
14002 | relocation = 0; | |
14003 | else | |
4cc603a5 AM |
14004 | { |
14005 | /* If this is a relocation against the opd section sym | |
14006 | and we have edited .opd, adjust the reloc addend so | |
14007 | that ld -r and ld --emit-relocs output is correct. | |
14008 | If it is a reloc against some other .opd symbol, | |
14009 | then the symbol value will be adjusted later. */ | |
14010 | if (ELF_ST_TYPE (sym->st_info) == STT_SECTION) | |
14011 | rel->r_addend += adjust; | |
14012 | else | |
14013 | relocation += adjust; | |
14014 | } | |
1e2f5b6e | 14015 | } |
5bd4f169 AM |
14016 | } |
14017 | else | |
14018 | { | |
62d887d4 L |
14019 | bfd_boolean ignored; |
14020 | ||
b2a8e766 AM |
14021 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
14022 | r_symndx, symtab_hdr, sym_hashes, | |
039b3fef | 14023 | h_elf, sec, relocation, |
62d887d4 | 14024 | unresolved_reloc, warned, ignored); |
039b3fef AM |
14025 | sym_name = h_elf->root.root.string; |
14026 | sym_type = h_elf->type; | |
b69fdb4e AM |
14027 | if (sec != NULL |
14028 | && sec->owner == output_bfd | |
14029 | && strcmp (sec->name, ".opd") == 0) | |
14030 | { | |
14031 | /* This is a symbol defined in a linker script. All | |
14032 | such are defined in output sections, even those | |
14033 | defined by simple assignment from a symbol defined in | |
14034 | an input section. Transfer the symbol to an | |
14035 | appropriate input .opd section, so that a branch to | |
14036 | this symbol will be mapped to the location specified | |
14037 | by the opd entry. */ | |
14038 | struct bfd_link_order *lo; | |
14039 | for (lo = sec->map_head.link_order; lo != NULL; lo = lo->next) | |
14040 | if (lo->type == bfd_indirect_link_order) | |
14041 | { | |
14042 | asection *isec = lo->u.indirect.section; | |
14043 | if (h_elf->root.u.def.value >= isec->output_offset | |
14044 | && h_elf->root.u.def.value < (isec->output_offset | |
14045 | + isec->size)) | |
14046 | { | |
14047 | h_elf->root.u.def.value -= isec->output_offset; | |
14048 | h_elf->root.u.def.section = isec; | |
14049 | sec = isec; | |
14050 | break; | |
14051 | } | |
14052 | } | |
14053 | } | |
5bd4f169 | 14054 | } |
039b3fef | 14055 | h = (struct ppc_link_hash_entry *) h_elf; |
5bd4f169 | 14056 | |
dbaa2011 | 14057 | if (sec != NULL && discarded_section (sec)) |
c316a17c AM |
14058 | { |
14059 | _bfd_clear_contents (ppc64_elf_howto_table[r_type], | |
14060 | input_bfd, input_section, | |
14061 | contents + rel->r_offset); | |
14062 | wrel->r_offset = rel->r_offset; | |
14063 | wrel->r_info = 0; | |
14064 | wrel->r_addend = 0; | |
14065 | ||
14066 | /* For ld -r, remove relocations in debug sections against | |
dcd2b8a0 | 14067 | symbols defined in discarded sections. Not done for |
c316a17c AM |
14068 | non-debug to preserve relocs in .eh_frame which the |
14069 | eh_frame editing code expects to be present. */ | |
14070 | if (bfd_link_relocatable (info) | |
14071 | && (input_section->flags & SEC_DEBUGGING)) | |
14072 | wrel--; | |
14073 | ||
14074 | continue; | |
14075 | } | |
ab96bf03 | 14076 | |
0e1862bb | 14077 | if (bfd_link_relocatable (info)) |
c316a17c | 14078 | goto copy_reloc; |
ab96bf03 | 14079 | |
f40da81b AM |
14080 | if (h != NULL && &h->elf == htab->elf.hgot) |
14081 | { | |
6f20ed8a | 14082 | relocation = TOCstart + htab->sec_info[input_section->id].toc_off; |
f40da81b AM |
14083 | sec = bfd_abs_section_ptr; |
14084 | unresolved_reloc = FALSE; | |
14085 | } | |
14086 | ||
951fd09b AM |
14087 | /* TLS optimizations. Replace instruction sequences and relocs |
14088 | based on information we collected in tls_optimize. We edit | |
14089 | RELOCS so that --emit-relocs will output something sensible | |
14090 | for the final instruction stream. */ | |
14091 | tls_mask = 0; | |
14092 | tls_gd = 0; | |
0d4792f7 | 14093 | toc_symndx = 0; |
727fc41e AM |
14094 | if (h != NULL) |
14095 | tls_mask = h->tls_mask; | |
14096 | else if (local_got_ents != NULL) | |
411e1bfb | 14097 | { |
e054468f AM |
14098 | struct plt_entry **local_plt = (struct plt_entry **) |
14099 | (local_got_ents + symtab_hdr->sh_info); | |
f961d9dd | 14100 | unsigned char *lgot_masks = (unsigned char *) |
e054468f | 14101 | (local_plt + symtab_hdr->sh_info); |
727fc41e AM |
14102 | tls_mask = lgot_masks[r_symndx]; |
14103 | } | |
37da22e5 | 14104 | if (((tls_mask & TLS_TLS) == 0 || tls_mask == (TLS_TLS | TLS_MARK)) |
727fc41e AM |
14105 | && (r_type == R_PPC64_TLS |
14106 | || r_type == R_PPC64_TLSGD | |
14107 | || r_type == R_PPC64_TLSLD)) | |
14108 | { | |
14109 | /* Check for toc tls entries. */ | |
f961d9dd | 14110 | unsigned char *toc_tls; |
0d4792f7 | 14111 | |
727fc41e AM |
14112 | if (!get_tls_mask (&toc_tls, &toc_symndx, &toc_addend, |
14113 | &local_syms, rel, input_bfd)) | |
14114 | return FALSE; | |
0d4792f7 | 14115 | |
727fc41e AM |
14116 | if (toc_tls) |
14117 | tls_mask = *toc_tls; | |
0d4792f7 AM |
14118 | } |
14119 | ||
14120 | /* Check that tls relocs are used with tls syms, and non-tls | |
14121 | relocs are used with non-tls syms. */ | |
cf35638d | 14122 | if (r_symndx != STN_UNDEF |
0d4792f7 AM |
14123 | && r_type != R_PPC64_NONE |
14124 | && (h == NULL | |
039b3fef AM |
14125 | || h->elf.root.type == bfd_link_hash_defined |
14126 | || h->elf.root.type == bfd_link_hash_defweak) | |
1d483afe AM |
14127 | && (IS_PPC64_TLS_RELOC (r_type) |
14128 | != (sym_type == STT_TLS | |
14129 | || (sym_type == STT_SECTION | |
14130 | && (sec->flags & SEC_THREAD_LOCAL) != 0)))) | |
0d4792f7 | 14131 | { |
37da22e5 | 14132 | if ((tls_mask & TLS_TLS) != 0 |
727fc41e AM |
14133 | && (r_type == R_PPC64_TLS |
14134 | || r_type == R_PPC64_TLSGD | |
14135 | || r_type == R_PPC64_TLSLD)) | |
0d4792f7 AM |
14136 | /* R_PPC64_TLS is OK against a symbol in the TOC. */ |
14137 | ; | |
14138 | else | |
25f53a85 | 14139 | info->callbacks->einfo |
1d483afe | 14140 | (!IS_PPC64_TLS_RELOC (r_type) |
695344c0 | 14141 | /* xgettext:c-format */ |
c1c8c1ef | 14142 | ? _("%H: %s used with TLS symbol `%pT'\n") |
695344c0 | 14143 | /* xgettext:c-format */ |
c1c8c1ef | 14144 | : _("%H: %s used with non-TLS symbol `%pT'\n"), |
25f53a85 | 14145 | input_bfd, input_section, rel->r_offset, |
0d4792f7 AM |
14146 | ppc64_elf_howto_table[r_type]->name, |
14147 | sym_name); | |
411e1bfb AM |
14148 | } |
14149 | ||
14150 | /* Ensure reloc mapping code below stays sane. */ | |
14151 | if (R_PPC64_TOC16_LO_DS != R_PPC64_TOC16_DS + 1 | |
14152 | || R_PPC64_TOC16_LO != R_PPC64_TOC16 + 1 | |
14153 | || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TLSGD16 & 3) | |
14154 | || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TLSGD16_LO & 3) | |
14155 | || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TLSGD16_HI & 3) | |
14156 | || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TLSGD16_HA & 3) | |
14157 | || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TPREL16_DS & 3) | |
14158 | || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TPREL16_LO_DS & 3) | |
14159 | || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TPREL16_HI & 3) | |
14160 | || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TPREL16_HA & 3)) | |
14161 | abort (); | |
0d4792f7 | 14162 | |
411e1bfb AM |
14163 | switch (r_type) |
14164 | { | |
14165 | default: | |
411e1bfb AM |
14166 | break; |
14167 | ||
ba761f19 | 14168 | case R_PPC64_LO_DS_OPT: |
95f0d0d2 | 14169 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset - d_offset); |
ba761f19 AM |
14170 | if ((insn & (0x3f << 26)) != 58u << 26) |
14171 | abort (); | |
14172 | insn += (14u << 26) - (58u << 26); | |
95f0d0d2 | 14173 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset - d_offset); |
ba761f19 AM |
14174 | r_type = R_PPC64_TOC16_LO; |
14175 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
14176 | break; | |
14177 | ||
411e1bfb AM |
14178 | case R_PPC64_TOC16: |
14179 | case R_PPC64_TOC16_LO: | |
14180 | case R_PPC64_TOC16_DS: | |
14181 | case R_PPC64_TOC16_LO_DS: | |
411e1bfb AM |
14182 | { |
14183 | /* Check for toc tls entries. */ | |
f961d9dd | 14184 | unsigned char *toc_tls; |
951fd09b | 14185 | int retval; |
411e1bfb | 14186 | |
3a71aa26 AM |
14187 | retval = get_tls_mask (&toc_tls, &toc_symndx, &toc_addend, |
14188 | &local_syms, rel, input_bfd); | |
951fd09b | 14189 | if (retval == 0) |
411e1bfb AM |
14190 | return FALSE; |
14191 | ||
14192 | if (toc_tls) | |
14193 | { | |
951fd09b | 14194 | tls_mask = *toc_tls; |
411e1bfb AM |
14195 | if (r_type == R_PPC64_TOC16_DS |
14196 | || r_type == R_PPC64_TOC16_LO_DS) | |
81407a69 | 14197 | { |
37da22e5 | 14198 | if ((tls_mask & TLS_TLS) != 0 |
81407a69 AM |
14199 | && (tls_mask & (TLS_DTPREL | TLS_TPREL)) == 0) |
14200 | goto toctprel; | |
14201 | } | |
411e1bfb | 14202 | else |
951fd09b AM |
14203 | { |
14204 | /* If we found a GD reloc pair, then we might be | |
14205 | doing a GD->IE transition. */ | |
14206 | if (retval == 2) | |
14207 | { | |
14208 | tls_gd = TLS_TPRELGD; | |
37da22e5 AM |
14209 | if ((tls_mask & TLS_TLS) != 0 |
14210 | && (tls_mask & TLS_GD) == 0) | |
102890f0 | 14211 | goto tls_ldgd_opt; |
951fd09b AM |
14212 | } |
14213 | else if (retval == 3) | |
14214 | { | |
37da22e5 AM |
14215 | if ((tls_mask & TLS_TLS) != 0 |
14216 | && (tls_mask & TLS_LD) == 0) | |
102890f0 | 14217 | goto tls_ldgd_opt; |
951fd09b AM |
14218 | } |
14219 | } | |
411e1bfb AM |
14220 | } |
14221 | } | |
14222 | break; | |
14223 | ||
9d6ded02 AM |
14224 | case R_PPC64_GOT_TPREL16_HI: |
14225 | case R_PPC64_GOT_TPREL16_HA: | |
37da22e5 | 14226 | if ((tls_mask & TLS_TLS) != 0 |
9d6ded02 AM |
14227 | && (tls_mask & TLS_TPREL) == 0) |
14228 | { | |
14229 | rel->r_offset -= d_offset; | |
95f0d0d2 | 14230 | bfd_put_32 (input_bfd, NOP, contents + rel->r_offset); |
9d6ded02 AM |
14231 | r_type = R_PPC64_NONE; |
14232 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
14233 | } | |
14234 | break; | |
14235 | ||
411e1bfb AM |
14236 | case R_PPC64_GOT_TPREL16_DS: |
14237 | case R_PPC64_GOT_TPREL16_LO_DS: | |
37da22e5 | 14238 | if ((tls_mask & TLS_TLS) != 0 |
951fd09b | 14239 | && (tls_mask & TLS_TPREL) == 0) |
411e1bfb | 14240 | { |
81407a69 | 14241 | toctprel: |
95f0d0d2 | 14242 | insn = bfd_get_32 (input_bfd, |
c316a17c | 14243 | contents + rel->r_offset - d_offset); |
411e1bfb AM |
14244 | insn &= 31 << 21; |
14245 | insn |= 0x3c0d0000; /* addis 0,13,0 */ | |
95f0d0d2 | 14246 | bfd_put_32 (input_bfd, insn, |
c316a17c | 14247 | contents + rel->r_offset - d_offset); |
411e1bfb | 14248 | r_type = R_PPC64_TPREL16_HA; |
0d4792f7 AM |
14249 | if (toc_symndx != 0) |
14250 | { | |
14251 | rel->r_info = ELF64_R_INFO (toc_symndx, r_type); | |
3a71aa26 | 14252 | rel->r_addend = toc_addend; |
0d4792f7 AM |
14253 | /* We changed the symbol. Start over in order to |
14254 | get h, sym, sec etc. right. */ | |
c316a17c | 14255 | goto again; |
0d4792f7 AM |
14256 | } |
14257 | else | |
14258 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
411e1bfb AM |
14259 | } |
14260 | break; | |
14261 | ||
14262 | case R_PPC64_TLS: | |
37da22e5 | 14263 | if ((tls_mask & TLS_TLS) != 0 |
951fd09b | 14264 | && (tls_mask & TLS_TPREL) == 0) |
411e1bfb | 14265 | { |
95f0d0d2 | 14266 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); |
2d0f3896 AM |
14267 | insn = _bfd_elf_ppc_at_tls_transform (insn, 13); |
14268 | if (insn == 0) | |
411e1bfb | 14269 | abort (); |
95f0d0d2 | 14270 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
411e1bfb | 14271 | /* Was PPC64_TLS which sits on insn boundary, now |
4fe5ca5b GM |
14272 | PPC64_TPREL16_LO which is at low-order half-word. */ |
14273 | rel->r_offset += d_offset; | |
0d4792f7 AM |
14274 | r_type = R_PPC64_TPREL16_LO; |
14275 | if (toc_symndx != 0) | |
14276 | { | |
14277 | rel->r_info = ELF64_R_INFO (toc_symndx, r_type); | |
3a71aa26 | 14278 | rel->r_addend = toc_addend; |
0d4792f7 AM |
14279 | /* We changed the symbol. Start over in order to |
14280 | get h, sym, sec etc. right. */ | |
c316a17c | 14281 | goto again; |
0d4792f7 AM |
14282 | } |
14283 | else | |
14284 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
411e1bfb AM |
14285 | } |
14286 | break; | |
14287 | ||
411e1bfb AM |
14288 | case R_PPC64_GOT_TLSGD16_HI: |
14289 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b | 14290 | tls_gd = TLS_TPRELGD; |
37da22e5 | 14291 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0) |
951fd09b AM |
14292 | goto tls_gdld_hi; |
14293 | break; | |
14294 | ||
411e1bfb AM |
14295 | case R_PPC64_GOT_TLSLD16_HI: |
14296 | case R_PPC64_GOT_TLSLD16_HA: | |
37da22e5 | 14297 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0) |
411e1bfb | 14298 | { |
951fd09b AM |
14299 | tls_gdld_hi: |
14300 | if ((tls_mask & tls_gd) != 0) | |
14301 | r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3) | |
14302 | + R_PPC64_GOT_TPREL16_DS); | |
14303 | else | |
411e1bfb | 14304 | { |
4fe5ca5b | 14305 | rel->r_offset -= d_offset; |
95f0d0d2 | 14306 | bfd_put_32 (input_bfd, NOP, contents + rel->r_offset); |
951fd09b | 14307 | r_type = R_PPC64_NONE; |
411e1bfb | 14308 | } |
951fd09b | 14309 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); |
411e1bfb AM |
14310 | } |
14311 | break; | |
14312 | ||
951fd09b AM |
14313 | case R_PPC64_GOT_TLSGD16: |
14314 | case R_PPC64_GOT_TLSGD16_LO: | |
14315 | tls_gd = TLS_TPRELGD; | |
37da22e5 | 14316 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0) |
102890f0 | 14317 | goto tls_ldgd_opt; |
951fd09b | 14318 | break; |
411e1bfb | 14319 | |
951fd09b AM |
14320 | case R_PPC64_GOT_TLSLD16: |
14321 | case R_PPC64_GOT_TLSLD16_LO: | |
37da22e5 | 14322 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0) |
951fd09b | 14323 | { |
b9f04fe0 | 14324 | unsigned int insn1, insn2; |
102890f0 AM |
14325 | bfd_vma offset; |
14326 | ||
14327 | tls_ldgd_opt: | |
727fc41e AM |
14328 | offset = (bfd_vma) -1; |
14329 | /* If not using the newer R_PPC64_TLSGD/LD to mark | |
14330 | __tls_get_addr calls, we must trust that the call | |
14331 | stays with its arg setup insns, ie. that the next | |
14332 | reloc is the __tls_get_addr call associated with | |
14333 | the current reloc. Edit both insns. */ | |
14334 | if (input_section->has_tls_get_addr_call | |
14335 | && rel + 1 < relend | |
14336 | && branch_reloc_hash_match (input_bfd, rel + 1, | |
14337 | htab->tls_get_addr, | |
14338 | htab->tls_get_addr_fd)) | |
14339 | offset = rel[1].r_offset; | |
b86ac8e3 AM |
14340 | /* We read the low GOT_TLS (or TOC16) insn because we |
14341 | need to keep the destination reg. It may be | |
14342 | something other than the usual r3, and moved to r3 | |
14343 | before the call by intervening code. */ | |
95f0d0d2 | 14344 | insn1 = bfd_get_32 (input_bfd, |
b86ac8e3 | 14345 | contents + rel->r_offset - d_offset); |
102890f0 | 14346 | if ((tls_mask & tls_gd) != 0) |
411e1bfb | 14347 | { |
102890f0 | 14348 | /* IE */ |
b86ac8e3 | 14349 | insn1 &= (0x1f << 21) | (0x1f << 16); |
102890f0 AM |
14350 | insn1 |= 58 << 26; /* ld */ |
14351 | insn2 = 0x7c636a14; /* add 3,3,13 */ | |
727fc41e | 14352 | if (offset != (bfd_vma) -1) |
f58d5a2d | 14353 | rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE); |
102890f0 AM |
14354 | if ((tls_mask & TLS_EXPLICIT) == 0) |
14355 | r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3) | |
14356 | + R_PPC64_GOT_TPREL16_DS); | |
411e1bfb | 14357 | else |
102890f0 AM |
14358 | r_type += R_PPC64_TOC16_DS - R_PPC64_TOC16; |
14359 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
14360 | } | |
14361 | else | |
14362 | { | |
14363 | /* LE */ | |
b86ac8e3 AM |
14364 | insn1 &= 0x1f << 21; |
14365 | insn1 |= 0x3c0d0000; /* addis r,13,0 */ | |
102890f0 AM |
14366 | insn2 = 0x38630000; /* addi 3,3,0 */ |
14367 | if (tls_gd == 0) | |
951fd09b | 14368 | { |
102890f0 | 14369 | /* Was an LD reloc. */ |
1d483afe AM |
14370 | if (toc_symndx) |
14371 | sec = local_sections[toc_symndx]; | |
14372 | for (r_symndx = 0; | |
14373 | r_symndx < symtab_hdr->sh_info; | |
14374 | r_symndx++) | |
14375 | if (local_sections[r_symndx] == sec) | |
14376 | break; | |
14377 | if (r_symndx >= symtab_hdr->sh_info) | |
cf35638d | 14378 | r_symndx = STN_UNDEF; |
102890f0 | 14379 | rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; |
cf35638d | 14380 | if (r_symndx != STN_UNDEF) |
1d483afe AM |
14381 | rel->r_addend -= (local_syms[r_symndx].st_value |
14382 | + sec->output_offset | |
14383 | + sec->output_section->vma); | |
951fd09b | 14384 | } |
102890f0 | 14385 | else if (toc_symndx != 0) |
3a71aa26 AM |
14386 | { |
14387 | r_symndx = toc_symndx; | |
14388 | rel->r_addend = toc_addend; | |
14389 | } | |
102890f0 AM |
14390 | r_type = R_PPC64_TPREL16_HA; |
14391 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
727fc41e AM |
14392 | if (offset != (bfd_vma) -1) |
14393 | { | |
14394 | rel[1].r_info = ELF64_R_INFO (r_symndx, | |
14395 | R_PPC64_TPREL16_LO); | |
14396 | rel[1].r_offset = offset + d_offset; | |
14397 | rel[1].r_addend = rel->r_addend; | |
14398 | } | |
102890f0 | 14399 | } |
95f0d0d2 | 14400 | bfd_put_32 (input_bfd, insn1, |
3a71aa26 | 14401 | contents + rel->r_offset - d_offset); |
727fc41e | 14402 | if (offset != (bfd_vma) -1) |
b9f04fe0 | 14403 | bfd_put_32 (input_bfd, insn2, contents + offset); |
727fc41e AM |
14404 | if ((tls_mask & tls_gd) == 0 |
14405 | && (tls_gd == 0 || toc_symndx != 0)) | |
14406 | { | |
14407 | /* We changed the symbol. Start over in order | |
14408 | to get h, sym, sec etc. right. */ | |
c316a17c | 14409 | goto again; |
727fc41e AM |
14410 | } |
14411 | } | |
14412 | break; | |
14413 | ||
14414 | case R_PPC64_TLSGD: | |
37da22e5 | 14415 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0 |
675e2809 | 14416 | && rel + 1 < relend) |
727fc41e | 14417 | { |
b9f04fe0 | 14418 | unsigned int insn2; |
727fc41e AM |
14419 | bfd_vma offset = rel->r_offset; |
14420 | ||
23cedd1d AM |
14421 | if (is_plt_seq_reloc (ELF64_R_TYPE (rel[1].r_info))) |
14422 | { | |
14423 | bfd_put_32 (output_bfd, NOP, contents + offset); | |
14424 | rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE); | |
14425 | break; | |
14426 | } | |
14427 | ||
14428 | if (ELF64_R_TYPE (rel[1].r_info) == R_PPC64_PLTCALL) | |
14429 | bfd_put_32 (output_bfd, NOP, contents + offset + 4); | |
14430 | ||
727fc41e AM |
14431 | if ((tls_mask & TLS_TPRELGD) != 0) |
14432 | { | |
14433 | /* IE */ | |
14434 | r_type = R_PPC64_NONE; | |
14435 | insn2 = 0x7c636a14; /* add 3,3,13 */ | |
14436 | } | |
14437 | else | |
14438 | { | |
14439 | /* LE */ | |
14440 | if (toc_symndx != 0) | |
14441 | { | |
14442 | r_symndx = toc_symndx; | |
14443 | rel->r_addend = toc_addend; | |
14444 | } | |
14445 | r_type = R_PPC64_TPREL16_LO; | |
14446 | rel->r_offset = offset + d_offset; | |
14447 | insn2 = 0x38630000; /* addi 3,3,0 */ | |
14448 | } | |
14449 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
14450 | /* Zap the reloc on the _tls_get_addr call too. */ | |
14451 | BFD_ASSERT (offset == rel[1].r_offset); | |
f58d5a2d | 14452 | rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE); |
95f0d0d2 | 14453 | bfd_put_32 (input_bfd, insn2, contents + offset); |
727fc41e | 14454 | if ((tls_mask & TLS_TPRELGD) == 0 && toc_symndx != 0) |
c316a17c | 14455 | goto again; |
411e1bfb | 14456 | } |
411e1bfb AM |
14457 | break; |
14458 | ||
727fc41e | 14459 | case R_PPC64_TLSLD: |
37da22e5 | 14460 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0 |
675e2809 | 14461 | && rel + 1 < relend) |
727fc41e | 14462 | { |
b9f04fe0 | 14463 | unsigned int insn2; |
727fc41e AM |
14464 | bfd_vma offset = rel->r_offset; |
14465 | ||
23cedd1d AM |
14466 | if (is_plt_seq_reloc (ELF64_R_TYPE (rel[1].r_info))) |
14467 | { | |
14468 | bfd_put_32 (output_bfd, NOP, contents + offset); | |
14469 | rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE); | |
14470 | break; | |
14471 | } | |
14472 | ||
14473 | if (ELF64_R_TYPE (rel[1].r_info) == R_PPC64_PLTCALL) | |
14474 | bfd_put_32 (output_bfd, NOP, contents + offset + 4); | |
14475 | ||
727fc41e AM |
14476 | if (toc_symndx) |
14477 | sec = local_sections[toc_symndx]; | |
14478 | for (r_symndx = 0; | |
14479 | r_symndx < symtab_hdr->sh_info; | |
14480 | r_symndx++) | |
14481 | if (local_sections[r_symndx] == sec) | |
14482 | break; | |
14483 | if (r_symndx >= symtab_hdr->sh_info) | |
cf35638d | 14484 | r_symndx = STN_UNDEF; |
727fc41e | 14485 | rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; |
cf35638d | 14486 | if (r_symndx != STN_UNDEF) |
727fc41e AM |
14487 | rel->r_addend -= (local_syms[r_symndx].st_value |
14488 | + sec->output_offset | |
14489 | + sec->output_section->vma); | |
14490 | ||
14491 | r_type = R_PPC64_TPREL16_LO; | |
14492 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
14493 | rel->r_offset = offset + d_offset; | |
14494 | /* Zap the reloc on the _tls_get_addr call too. */ | |
14495 | BFD_ASSERT (offset == rel[1].r_offset); | |
f58d5a2d | 14496 | rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE); |
727fc41e | 14497 | insn2 = 0x38630000; /* addi 3,3,0 */ |
95f0d0d2 | 14498 | bfd_put_32 (input_bfd, insn2, contents + offset); |
c316a17c | 14499 | goto again; |
727fc41e AM |
14500 | } |
14501 | break; | |
14502 | ||
411e1bfb | 14503 | case R_PPC64_DTPMOD64: |
951fd09b AM |
14504 | if (rel + 1 < relend |
14505 | && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64) | |
14506 | && rel[1].r_offset == rel->r_offset + 8) | |
411e1bfb | 14507 | { |
951fd09b AM |
14508 | if ((tls_mask & TLS_GD) == 0) |
14509 | { | |
14510 | rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_NONE); | |
14511 | if ((tls_mask & TLS_TPRELGD) != 0) | |
14512 | r_type = R_PPC64_TPREL64; | |
14513 | else | |
14514 | { | |
4ce794b7 | 14515 | bfd_put_64 (output_bfd, 1, contents + rel->r_offset); |
951fd09b AM |
14516 | r_type = R_PPC64_NONE; |
14517 | } | |
14518 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
14519 | } | |
14520 | } | |
14521 | else | |
14522 | { | |
14523 | if ((tls_mask & TLS_LD) == 0) | |
411e1bfb | 14524 | { |
4ce794b7 | 14525 | bfd_put_64 (output_bfd, 1, contents + rel->r_offset); |
411e1bfb | 14526 | r_type = R_PPC64_NONE; |
951fd09b | 14527 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); |
411e1bfb | 14528 | } |
411e1bfb AM |
14529 | } |
14530 | break; | |
14531 | ||
14532 | case R_PPC64_TPREL64: | |
951fd09b | 14533 | if ((tls_mask & TLS_TPREL) == 0) |
411e1bfb AM |
14534 | { |
14535 | r_type = R_PPC64_NONE; | |
14536 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
14537 | } | |
14538 | break; | |
52a82034 | 14539 | |
006589cf AM |
14540 | case R_PPC64_ENTRY: |
14541 | relocation = TOCstart + htab->sec_info[input_section->id].toc_off; | |
14542 | if (!bfd_link_pic (info) | |
14543 | && !info->traditional_format | |
14544 | && relocation + 0x80008000 <= 0xffffffff) | |
14545 | { | |
14546 | unsigned int insn1, insn2; | |
14547 | ||
14548 | insn1 = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
14549 | insn2 = bfd_get_32 (input_bfd, contents + rel->r_offset + 4); | |
14550 | if ((insn1 & ~0xfffc) == LD_R2_0R12 | |
14551 | && insn2 == ADD_R2_R2_R12) | |
14552 | { | |
95f0d0d2 | 14553 | bfd_put_32 (input_bfd, |
006589cf AM |
14554 | LIS_R2 + PPC_HA (relocation), |
14555 | contents + rel->r_offset); | |
95f0d0d2 | 14556 | bfd_put_32 (input_bfd, |
006589cf AM |
14557 | ADDI_R2_R2 + PPC_LO (relocation), |
14558 | contents + rel->r_offset + 4); | |
14559 | } | |
14560 | } | |
14561 | else | |
14562 | { | |
14563 | relocation -= (rel->r_offset | |
14564 | + input_section->output_offset | |
14565 | + input_section->output_section->vma); | |
14566 | if (relocation + 0x80008000 <= 0xffffffff) | |
14567 | { | |
14568 | unsigned int insn1, insn2; | |
14569 | ||
14570 | insn1 = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
14571 | insn2 = bfd_get_32 (input_bfd, contents + rel->r_offset + 4); | |
14572 | if ((insn1 & ~0xfffc) == LD_R2_0R12 | |
14573 | && insn2 == ADD_R2_R2_R12) | |
14574 | { | |
95f0d0d2 | 14575 | bfd_put_32 (input_bfd, |
006589cf AM |
14576 | ADDIS_R2_R12 + PPC_HA (relocation), |
14577 | contents + rel->r_offset); | |
95f0d0d2 | 14578 | bfd_put_32 (input_bfd, |
006589cf AM |
14579 | ADDI_R2_R2 + PPC_LO (relocation), |
14580 | contents + rel->r_offset + 4); | |
14581 | } | |
14582 | } | |
14583 | } | |
14584 | break; | |
14585 | ||
52a82034 AM |
14586 | case R_PPC64_REL16_HA: |
14587 | /* If we are generating a non-PIC executable, edit | |
14588 | . 0: addis 2,12,.TOC.-0b@ha | |
14589 | . addi 2,2,.TOC.-0b@l | |
14590 | used by ELFv2 global entry points to set up r2, to | |
14591 | . lis 2,.TOC.@ha | |
14592 | . addi 2,2,.TOC.@l | |
14593 | if .TOC. is in range. */ | |
0e1862bb | 14594 | if (!bfd_link_pic (info) |
810d4e75 | 14595 | && !info->traditional_format |
006589cf | 14596 | && !htab->opd_abi |
4f038ee5 | 14597 | && rel->r_addend == d_offset |
52a82034 AM |
14598 | && h != NULL && &h->elf == htab->elf.hgot |
14599 | && rel + 1 < relend | |
14600 | && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_REL16_LO) | |
14601 | && rel[1].r_offset == rel->r_offset + 4 | |
14602 | && rel[1].r_addend == rel->r_addend + 4 | |
14603 | && relocation + 0x80008000 <= 0xffffffff) | |
14604 | { | |
14605 | unsigned int insn1, insn2; | |
14606 | bfd_vma offset = rel->r_offset - d_offset; | |
95f0d0d2 AM |
14607 | insn1 = bfd_get_32 (input_bfd, contents + offset); |
14608 | insn2 = bfd_get_32 (input_bfd, contents + offset + 4); | |
006589cf AM |
14609 | if ((insn1 & 0xffff0000) == ADDIS_R2_R12 |
14610 | && (insn2 & 0xffff0000) == ADDI_R2_R2) | |
52a82034 AM |
14611 | { |
14612 | r_type = R_PPC64_ADDR16_HA; | |
14613 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
14614 | rel->r_addend -= d_offset; | |
14615 | rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_ADDR16_LO); | |
14616 | rel[1].r_addend -= d_offset + 4; | |
95f0d0d2 | 14617 | bfd_put_32 (input_bfd, LIS_R2, contents + offset); |
52a82034 AM |
14618 | } |
14619 | } | |
14620 | break; | |
411e1bfb AM |
14621 | } |
14622 | ||
14623 | /* Handle other relocations that tweak non-addend part of insn. */ | |
86c76c7b | 14624 | insn = 0; |
b25116a9 AM |
14625 | max_br_offset = 1 << 25; |
14626 | addend = rel->r_addend; | |
bc30df16 | 14627 | reloc_dest = DEST_NORMAL; |
65f38f15 | 14628 | switch (r_type) |
5bd4f169 AM |
14629 | { |
14630 | default: | |
65f38f15 | 14631 | break; |
5bd4f169 | 14632 | |
3b421ab3 AM |
14633 | case R_PPC64_TOCSAVE: |
14634 | if (relocation + addend == (rel->r_offset | |
14635 | + input_section->output_offset | |
14636 | + input_section->output_section->vma) | |
14637 | && tocsave_find (htab, NO_INSERT, | |
14638 | &local_syms, rel, input_bfd)) | |
14639 | { | |
14640 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
14641 | if (insn == NOP | |
14642 | || insn == CROR_151515 || insn == CROR_313131) | |
a078d95a AM |
14643 | bfd_put_32 (input_bfd, |
14644 | STD_R2_0R1 + STK_TOC (htab), | |
3b421ab3 AM |
14645 | contents + rel->r_offset); |
14646 | } | |
14647 | break; | |
14648 | ||
65f38f15 AM |
14649 | /* Branch taken prediction relocations. */ |
14650 | case R_PPC64_ADDR14_BRTAKEN: | |
14651 | case R_PPC64_REL14_BRTAKEN: | |
cedb70c5 | 14652 | insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */ |
1a0670f3 | 14653 | /* Fall through. */ |
65f38f15 | 14654 | |
86c76c7b | 14655 | /* Branch not taken prediction relocations. */ |
65f38f15 AM |
14656 | case R_PPC64_ADDR14_BRNTAKEN: |
14657 | case R_PPC64_REL14_BRNTAKEN: | |
95f0d0d2 | 14658 | insn |= bfd_get_32 (input_bfd, |
411e1bfb | 14659 | contents + rel->r_offset) & ~(0x01 << 21); |
1a0670f3 | 14660 | /* Fall through. */ |
86c76c7b | 14661 | |
b25116a9 AM |
14662 | case R_PPC64_REL14: |
14663 | max_br_offset = 1 << 15; | |
1a0670f3 | 14664 | /* Fall through. */ |
5bd4f169 | 14665 | |
65f38f15 | 14666 | case R_PPC64_REL24: |
23cedd1d | 14667 | case R_PPC64_PLTCALL: |
ad8e1ba5 AM |
14668 | /* Calls to functions with a different TOC, such as calls to |
14669 | shared objects, need to alter the TOC pointer. This is | |
14670 | done using a linkage stub. A REL24 branching to these | |
14671 | linkage stubs needs to be followed by a nop, as the nop | |
14672 | will be replaced with an instruction to restore the TOC | |
14673 | base pointer. */ | |
8387904d | 14674 | fdh = h; |
b31867b6 AM |
14675 | if (h != NULL |
14676 | && h->oh != NULL | |
14677 | && h->oh->is_func_descriptor) | |
14678 | fdh = ppc_follow_link (h->oh); | |
31c76678 DK |
14679 | stub_entry = ppc_get_stub_entry (input_section, sec, fdh, &orig_rel, |
14680 | htab); | |
23cedd1d AM |
14681 | if (r_type == R_PPC64_PLTCALL |
14682 | && stub_entry != NULL | |
14683 | && (stub_entry->stub_type == ppc_stub_plt_call | |
14684 | || stub_entry->stub_type == ppc_stub_plt_call_r2save)) | |
14685 | stub_entry = NULL; | |
14686 | ||
6abec6bc | 14687 | if (stub_entry != NULL |
ad8e1ba5 | 14688 | && (stub_entry->stub_type == ppc_stub_plt_call |
794e51c0 | 14689 | || stub_entry->stub_type == ppc_stub_plt_call_r2save |
ad8e1ba5 AM |
14690 | || stub_entry->stub_type == ppc_stub_plt_branch_r2off |
14691 | || stub_entry->stub_type == ppc_stub_long_branch_r2off)) | |
41bd81ab | 14692 | { |
b25116a9 | 14693 | bfd_boolean can_plt_call = FALSE; |
721956f4 | 14694 | |
6e1816be AM |
14695 | if (stub_entry->stub_type == ppc_stub_plt_call |
14696 | && !htab->opd_abi | |
14697 | && htab->params->plt_localentry0 != 0 | |
14698 | && is_elfv2_localentry0 (&h->elf)) | |
14699 | { | |
14700 | /* The function doesn't use or change r2. */ | |
14701 | can_plt_call = TRUE; | |
14702 | } | |
14703 | ||
f378ab09 | 14704 | /* All of these stubs may modify r2, so there must be a |
ba8ca3e7 AM |
14705 | branch and link followed by a nop. The nop is |
14706 | replaced by an insn to restore r2. */ | |
6e1816be | 14707 | else if (rel->r_offset + 8 <= input_section->size) |
41bd81ab | 14708 | { |
ba8ca3e7 AM |
14709 | unsigned long br; |
14710 | ||
14711 | br = bfd_get_32 (input_bfd, | |
14712 | contents + rel->r_offset); | |
14713 | if ((br & 1) != 0) | |
41bd81ab | 14714 | { |
ba8ca3e7 AM |
14715 | unsigned long nop; |
14716 | ||
14717 | nop = bfd_get_32 (input_bfd, | |
14718 | contents + rel->r_offset + 4); | |
23cedd1d AM |
14719 | if (nop == LD_R2_0R1 + STK_TOC (htab)) |
14720 | can_plt_call = TRUE; | |
14721 | else if (nop == NOP | |
14722 | || nop == CROR_151515 | |
14723 | || nop == CROR_313131) | |
a7f2871e | 14724 | { |
ba8ca3e7 AM |
14725 | if (h != NULL |
14726 | && (h == htab->tls_get_addr_fd | |
14727 | || h == htab->tls_get_addr) | |
7c9cf415 | 14728 | && htab->params->tls_get_addr_opt) |
ba8ca3e7 AM |
14729 | { |
14730 | /* Special stub used, leave nop alone. */ | |
14731 | } | |
14732 | else | |
a078d95a AM |
14733 | bfd_put_32 (input_bfd, |
14734 | LD_R2_0R1 + STK_TOC (htab), | |
ba8ca3e7 AM |
14735 | contents + rel->r_offset + 4); |
14736 | can_plt_call = TRUE; | |
a7f2871e | 14737 | } |
41bd81ab | 14738 | } |
5bd4f169 | 14739 | } |
721956f4 | 14740 | |
ba8ca3e7 | 14741 | if (!can_plt_call && h != NULL) |
721956f4 | 14742 | { |
ba8ca3e7 AM |
14743 | const char *name = h->elf.root.root.string; |
14744 | ||
14745 | if (*name == '.') | |
14746 | ++name; | |
14747 | ||
14748 | if (strncmp (name, "__libc_start_main", 17) == 0 | |
14749 | && (name[17] == 0 || name[17] == '@')) | |
6ab189d5 | 14750 | { |
ba8ca3e7 AM |
14751 | /* Allow crt1 branch to go via a toc adjusting |
14752 | stub. Other calls that never return could do | |
14753 | the same, if we could detect such. */ | |
b25116a9 | 14754 | can_plt_call = TRUE; |
6ab189d5 | 14755 | } |
ba8ca3e7 AM |
14756 | } |
14757 | ||
14758 | if (!can_plt_call) | |
14759 | { | |
14760 | /* g++ as of 20130507 emits self-calls without a | |
14761 | following nop. This is arguably wrong since we | |
14762 | have conflicting information. On the one hand a | |
14763 | global symbol and on the other a local call | |
14764 | sequence, but don't error for this special case. | |
14765 | It isn't possible to cheaply verify we have | |
14766 | exactly such a call. Allow all calls to the same | |
14767 | section. */ | |
14768 | asection *code_sec = sec; | |
14769 | ||
14770 | if (get_opd_info (sec) != NULL) | |
ad8e1ba5 | 14771 | { |
ba8ca3e7 AM |
14772 | bfd_vma off = (relocation + addend |
14773 | - sec->output_section->vma | |
14774 | - sec->output_offset); | |
bc30df16 | 14775 | |
ba8ca3e7 | 14776 | opd_entry_value (sec, off, &code_sec, NULL, FALSE); |
ad8e1ba5 | 14777 | } |
ba8ca3e7 AM |
14778 | if (code_sec == input_section) |
14779 | can_plt_call = TRUE; | |
14780 | } | |
14781 | ||
14782 | if (!can_plt_call) | |
14783 | { | |
4805fc55 AM |
14784 | if (stub_entry->stub_type == ppc_stub_plt_call |
14785 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
14786 | info->callbacks->einfo | |
695344c0 | 14787 | /* xgettext:c-format */ |
c1c8c1ef | 14788 | (_("%H: call to `%pT' lacks nop, can't restore toc; " |
4805fc55 AM |
14789 | "recompile with -fPIC\n"), |
14790 | input_bfd, input_section, rel->r_offset, sym_name); | |
14791 | else | |
14792 | info->callbacks->einfo | |
695344c0 | 14793 | /* xgettext:c-format */ |
c1c8c1ef | 14794 | (_("%H: call to `%pT' lacks nop, can't restore toc; " |
4805fc55 AM |
14795 | "(-mcmodel=small toc adjust stub)\n"), |
14796 | input_bfd, input_section, rel->r_offset, sym_name); | |
ba8ca3e7 AM |
14797 | |
14798 | bfd_set_error (bfd_error_bad_value); | |
14799 | ret = FALSE; | |
721956f4 AM |
14800 | } |
14801 | ||
b25116a9 | 14802 | if (can_plt_call |
794e51c0 AM |
14803 | && (stub_entry->stub_type == ppc_stub_plt_call |
14804 | || stub_entry->stub_type == ppc_stub_plt_call_r2save)) | |
b25116a9 AM |
14805 | unresolved_reloc = FALSE; |
14806 | } | |
14807 | ||
6abec6bc AM |
14808 | if ((stub_entry == NULL |
14809 | || stub_entry->stub_type == ppc_stub_long_branch | |
14810 | || stub_entry->stub_type == ppc_stub_plt_branch) | |
8387904d AM |
14811 | && get_opd_info (sec) != NULL) |
14812 | { | |
14813 | /* The branch destination is the value of the opd entry. */ | |
4cc603a5 AM |
14814 | bfd_vma off = (relocation + addend |
14815 | - sec->output_section->vma | |
14816 | - sec->output_offset); | |
aef36ac1 | 14817 | bfd_vma dest = opd_entry_value (sec, off, NULL, NULL, FALSE); |
8387904d AM |
14818 | if (dest != (bfd_vma) -1) |
14819 | { | |
14820 | relocation = dest; | |
14821 | addend = 0; | |
bc30df16 | 14822 | reloc_dest = DEST_OPD; |
8387904d AM |
14823 | } |
14824 | } | |
14825 | ||
b25116a9 AM |
14826 | /* If the branch is out of reach we ought to have a long |
14827 | branch stub. */ | |
14828 | from = (rel->r_offset | |
14829 | + input_section->output_offset | |
14830 | + input_section->output_section->vma); | |
14831 | ||
6911b7dc AM |
14832 | relocation += PPC64_LOCAL_ENTRY_OFFSET (fdh |
14833 | ? fdh->elf.other | |
14834 | : sym->st_other); | |
14835 | ||
6abec6bc AM |
14836 | if (stub_entry != NULL |
14837 | && (stub_entry->stub_type == ppc_stub_long_branch | |
14838 | || stub_entry->stub_type == ppc_stub_plt_branch) | |
14839 | && (r_type == R_PPC64_ADDR14_BRTAKEN | |
14840 | || r_type == R_PPC64_ADDR14_BRNTAKEN | |
14841 | || (relocation + addend - from + max_br_offset | |
14842 | < 2 * max_br_offset))) | |
14843 | /* Don't use the stub if this branch is in range. */ | |
14844 | stub_entry = NULL; | |
b25116a9 AM |
14845 | |
14846 | if (stub_entry != NULL) | |
14847 | { | |
14848 | /* Munge up the value and addend so that we call the stub | |
14849 | rather than the procedure directly. */ | |
a4b6fadd AM |
14850 | asection *stub_sec = stub_entry->group->stub_sec; |
14851 | ||
14852 | if (stub_entry->stub_type == ppc_stub_save_res) | |
14853 | relocation += (stub_sec->output_offset | |
14854 | + stub_sec->output_section->vma | |
14855 | + stub_sec->size - htab->sfpr->size | |
14856 | - htab->sfpr->output_offset | |
14857 | - htab->sfpr->output_section->vma); | |
14858 | else | |
14859 | relocation = (stub_entry->stub_offset | |
14860 | + stub_sec->output_offset | |
14861 | + stub_sec->output_section->vma); | |
b25116a9 | 14862 | addend = 0; |
bc30df16 | 14863 | reloc_dest = DEST_STUB; |
3b421ab3 | 14864 | |
954b63d4 | 14865 | if ((stub_entry->stub_type == ppc_stub_plt_call |
794e51c0 AM |
14866 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) |
14867 | && (ALWAYS_EMIT_R2SAVE | |
14868 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
3b421ab3 AM |
14869 | && rel + 1 < relend |
14870 | && rel[1].r_offset == rel->r_offset + 4 | |
14871 | && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOCSAVE) | |
14872 | relocation += 4; | |
b25116a9 AM |
14873 | } |
14874 | ||
14875 | if (insn != 0) | |
14876 | { | |
794e51c0 | 14877 | if (is_isa_v2) |
721956f4 | 14878 | { |
b25116a9 AM |
14879 | /* Set 'a' bit. This is 0b00010 in BO field for branch |
14880 | on CR(BI) insns (BO == 001at or 011at), and 0b01000 | |
14881 | for branch on CTR insns (BO == 1a00t or 1a01t). */ | |
14882 | if ((insn & (0x14 << 21)) == (0x04 << 21)) | |
14883 | insn |= 0x02 << 21; | |
14884 | else if ((insn & (0x14 << 21)) == (0x10 << 21)) | |
14885 | insn |= 0x08 << 21; | |
14886 | else | |
14887 | break; | |
14888 | } | |
14889 | else | |
14890 | { | |
14891 | /* Invert 'y' bit if not the default. */ | |
4cc603a5 | 14892 | if ((bfd_signed_vma) (relocation + addend - from) < 0) |
b25116a9 | 14893 | insn ^= 0x01 << 21; |
721956f4 | 14894 | } |
b25116a9 | 14895 | |
95f0d0d2 | 14896 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
5bd4f169 | 14897 | } |
e86ce104 | 14898 | |
06da1e8e AM |
14899 | /* NOP out calls to undefined weak functions. |
14900 | We can thus call a weak function without first | |
14901 | checking whether the function is defined. */ | |
b25116a9 | 14902 | else if (h != NULL |
039b3fef | 14903 | && h->elf.root.type == bfd_link_hash_undefweak |
766bc656 | 14904 | && h->elf.dynindx == -1 |
b25116a9 AM |
14905 | && r_type == R_PPC64_REL24 |
14906 | && relocation == 0 | |
4cc603a5 | 14907 | && addend == 0) |
e86ce104 | 14908 | { |
95f0d0d2 | 14909 | bfd_put_32 (input_bfd, NOP, contents + rel->r_offset); |
c316a17c | 14910 | goto copy_reloc; |
e86ce104 | 14911 | } |
65f38f15 AM |
14912 | break; |
14913 | } | |
5bd4f169 | 14914 | |
65f38f15 | 14915 | /* Set `addend'. */ |
411e1bfb | 14916 | tls_type = 0; |
23cedd1d | 14917 | save_unresolved_reloc = unresolved_reloc; |
65f38f15 AM |
14918 | switch (r_type) |
14919 | { | |
14920 | default: | |
cf97bcb0 AM |
14921 | /* xgettext:c-format */ |
14922 | _bfd_error_handler (_("%pB: %s unsupported"), | |
14923 | input_bfd, ppc64_elf_howto_table[r_type]->name); | |
5bd4f169 | 14924 | |
65f38f15 | 14925 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 14926 | ret = FALSE; |
c316a17c | 14927 | goto copy_reloc; |
5bd4f169 | 14928 | |
65f38f15 | 14929 | case R_PPC64_NONE: |
411e1bfb | 14930 | case R_PPC64_TLS: |
727fc41e AM |
14931 | case R_PPC64_TLSGD: |
14932 | case R_PPC64_TLSLD: | |
3b421ab3 | 14933 | case R_PPC64_TOCSAVE: |
04c9666a AM |
14934 | case R_PPC64_GNU_VTINHERIT: |
14935 | case R_PPC64_GNU_VTENTRY: | |
006589cf | 14936 | case R_PPC64_ENTRY: |
c316a17c | 14937 | goto copy_reloc; |
5bd4f169 AM |
14938 | |
14939 | /* GOT16 relocations. Like an ADDR16 using the symbol's | |
14940 | address in the GOT as relocation value instead of the | |
411e1bfb | 14941 | symbol's value itself. Also, create a GOT entry for the |
5bd4f169 | 14942 | symbol and put the symbol value there. */ |
411e1bfb AM |
14943 | case R_PPC64_GOT_TLSGD16: |
14944 | case R_PPC64_GOT_TLSGD16_LO: | |
14945 | case R_PPC64_GOT_TLSGD16_HI: | |
14946 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b | 14947 | tls_type = TLS_TLS | TLS_GD; |
411e1bfb AM |
14948 | goto dogot; |
14949 | ||
14950 | case R_PPC64_GOT_TLSLD16: | |
14951 | case R_PPC64_GOT_TLSLD16_LO: | |
14952 | case R_PPC64_GOT_TLSLD16_HI: | |
14953 | case R_PPC64_GOT_TLSLD16_HA: | |
951fd09b | 14954 | tls_type = TLS_TLS | TLS_LD; |
411e1bfb AM |
14955 | goto dogot; |
14956 | ||
14957 | case R_PPC64_GOT_TPREL16_DS: | |
14958 | case R_PPC64_GOT_TPREL16_LO_DS: | |
14959 | case R_PPC64_GOT_TPREL16_HI: | |
14960 | case R_PPC64_GOT_TPREL16_HA: | |
14961 | tls_type = TLS_TLS | TLS_TPREL; | |
14962 | goto dogot; | |
14963 | ||
14964 | case R_PPC64_GOT_DTPREL16_DS: | |
14965 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
14966 | case R_PPC64_GOT_DTPREL16_HI: | |
14967 | case R_PPC64_GOT_DTPREL16_HA: | |
14968 | tls_type = TLS_TLS | TLS_DTPREL; | |
14969 | goto dogot; | |
14970 | ||
65f38f15 AM |
14971 | case R_PPC64_GOT16: |
14972 | case R_PPC64_GOT16_LO: | |
14973 | case R_PPC64_GOT16_HI: | |
14974 | case R_PPC64_GOT16_HA: | |
14975 | case R_PPC64_GOT16_DS: | |
14976 | case R_PPC64_GOT16_LO_DS: | |
411e1bfb | 14977 | dogot: |
5bd4f169 AM |
14978 | { |
14979 | /* Relocation is to the entry for this symbol in the global | |
14980 | offset table. */ | |
e717da7e | 14981 | asection *got; |
d881513a | 14982 | bfd_vma *offp; |
5bd4f169 | 14983 | bfd_vma off; |
d881513a | 14984 | unsigned long indx = 0; |
927be08e | 14985 | struct got_entry *ent; |
65f38f15 | 14986 | |
d881513a AM |
14987 | if (tls_type == (TLS_TLS | TLS_LD) |
14988 | && (h == NULL | |
f5385ebf | 14989 | || !h->elf.def_dynamic)) |
927be08e | 14990 | ent = ppc64_tlsld_got (input_bfd); |
411e1bfb | 14991 | else |
5bd4f169 | 14992 | { |
d881513a AM |
14993 | if (h != NULL) |
14994 | { | |
f0158f44 AM |
14995 | if (!htab->elf.dynamic_sections_created |
14996 | || h->elf.dynindx == -1 | |
14997 | || SYMBOL_REFERENCES_LOCAL (info, &h->elf) | |
21d68fcd | 14998 | || UNDEFWEAK_NO_DYNAMIC_RELOC (info, &h->elf)) |
d881513a AM |
14999 | /* This is actually a static link, or it is a |
15000 | -Bsymbolic link and the symbol is defined | |
15001 | locally, or the symbol was forced to be local | |
15002 | because of a version file. */ | |
15003 | ; | |
15004 | else | |
15005 | { | |
039b3fef | 15006 | indx = h->elf.dynindx; |
d881513a AM |
15007 | unresolved_reloc = FALSE; |
15008 | } | |
039b3fef | 15009 | ent = h->elf.got.glist; |
d881513a | 15010 | } |
411e1bfb | 15011 | else |
5bd4f169 | 15012 | { |
d881513a AM |
15013 | if (local_got_ents == NULL) |
15014 | abort (); | |
15015 | ent = local_got_ents[r_symndx]; | |
5bd4f169 | 15016 | } |
d881513a AM |
15017 | |
15018 | for (; ent != NULL; ent = ent->next) | |
31c76678 | 15019 | if (ent->addend == orig_rel.r_addend |
e717da7e | 15020 | && ent->owner == input_bfd |
d881513a AM |
15021 | && ent->tls_type == tls_type) |
15022 | break; | |
5bd4f169 | 15023 | } |
411e1bfb | 15024 | |
927be08e AM |
15025 | if (ent == NULL) |
15026 | abort (); | |
15027 | if (ent->is_indirect) | |
15028 | ent = ent->got.ent; | |
15029 | offp = &ent->got.offset; | |
15030 | got = ppc64_elf_tdata (ent->owner)->got; | |
e717da7e AM |
15031 | if (got == NULL) |
15032 | abort (); | |
15033 | ||
411e1bfb AM |
15034 | /* The offset must always be a multiple of 8. We use the |
15035 | least significant bit to record whether we have already | |
15036 | processed this entry. */ | |
d881513a | 15037 | off = *offp; |
411e1bfb AM |
15038 | if ((off & 1) != 0) |
15039 | off &= ~1; | |
5bd4f169 AM |
15040 | else |
15041 | { | |
411e1bfb AM |
15042 | /* Generate relocs for the dynamic linker, except in |
15043 | the case of TLSLD where we'll use one entry per | |
15044 | module. */ | |
25f23106 AM |
15045 | asection *relgot; |
15046 | bfd_boolean ifunc; | |
e717da7e | 15047 | |
d881513a | 15048 | *offp = off | 1; |
25f23106 AM |
15049 | relgot = NULL; |
15050 | ifunc = (h != NULL | |
15051 | ? h->elf.type == STT_GNU_IFUNC | |
15052 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC); | |
19e08130 | 15053 | if (ifunc) |
82e66161 AM |
15054 | { |
15055 | relgot = htab->elf.irelplt; | |
15056 | if (indx == 0) | |
15057 | htab->local_ifunc_resolver = 1; | |
15058 | else if (is_static_defined (&h->elf)) | |
15059 | htab->maybe_local_ifunc_resolver = 1; | |
15060 | } | |
f0158f44 AM |
15061 | else if (indx != 0 |
15062 | || (bfd_link_pic (info) | |
15063 | && (h == NULL | |
21d68fcd | 15064 | || !UNDEFWEAK_NO_DYNAMIC_RELOC (info, &h->elf) |
f0158f44 | 15065 | || (tls_type == (TLS_TLS | TLS_LD) |
f15d0b54 AM |
15066 | && !h->elf.def_dynamic)) |
15067 | && !(tls_type == (TLS_TLS | TLS_TPREL) | |
15068 | && bfd_link_executable (info) | |
15069 | && SYMBOL_REFERENCES_LOCAL (info, &h->elf)))) | |
19e08130 | 15070 | relgot = ppc64_elf_tdata (ent->owner)->relgot; |
25f23106 | 15071 | if (relgot != NULL) |
5bd4f169 | 15072 | { |
e717da7e AM |
15073 | outrel.r_offset = (got->output_section->vma |
15074 | + got->output_offset | |
411e1bfb | 15075 | + off); |
4cc603a5 | 15076 | outrel.r_addend = addend; |
d881513a | 15077 | if (tls_type & (TLS_LD | TLS_GD)) |
5bd4f169 | 15078 | { |
411e1bfb | 15079 | outrel.r_addend = 0; |
e515b051 | 15080 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPMOD64); |
d881513a AM |
15081 | if (tls_type == (TLS_TLS | TLS_GD)) |
15082 | { | |
e717da7e AM |
15083 | loc = relgot->contents; |
15084 | loc += (relgot->reloc_count++ | |
d881513a AM |
15085 | * sizeof (Elf64_External_Rela)); |
15086 | bfd_elf64_swap_reloca_out (output_bfd, | |
15087 | &outrel, loc); | |
e515b051 | 15088 | outrel.r_offset += 8; |
4cc603a5 | 15089 | outrel.r_addend = addend; |
d881513a AM |
15090 | outrel.r_info |
15091 | = ELF64_R_INFO (indx, R_PPC64_DTPREL64); | |
d881513a | 15092 | } |
411e1bfb | 15093 | } |
951fd09b | 15094 | else if (tls_type == (TLS_TLS | TLS_DTPREL)) |
411e1bfb | 15095 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64); |
951fd09b | 15096 | else if (tls_type == (TLS_TLS | TLS_TPREL)) |
411e1bfb | 15097 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_TPREL64); |
25f23106 AM |
15098 | else if (indx != 0) |
15099 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT); | |
15100 | else | |
81407a69 | 15101 | { |
25f23106 AM |
15102 | if (ifunc) |
15103 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE); | |
15104 | else | |
15105 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
81407a69 AM |
15106 | |
15107 | /* Write the .got section contents for the sake | |
15108 | of prelink. */ | |
e717da7e | 15109 | loc = got->contents + off; |
23fbd6fa JJ |
15110 | bfd_put_64 (output_bfd, outrel.r_addend + relocation, |
15111 | loc); | |
81407a69 | 15112 | } |
81407a69 AM |
15113 | |
15114 | if (indx == 0 && tls_type != (TLS_TLS | TLS_LD)) | |
e515b051 AM |
15115 | { |
15116 | outrel.r_addend += relocation; | |
15117 | if (tls_type & (TLS_GD | TLS_DTPREL | TLS_TPREL)) | |
989f9879 AM |
15118 | { |
15119 | if (htab->elf.tls_sec == NULL) | |
15120 | outrel.r_addend = 0; | |
15121 | else | |
15122 | outrel.r_addend -= htab->elf.tls_sec->vma; | |
15123 | } | |
e515b051 | 15124 | } |
e717da7e AM |
15125 | loc = relgot->contents; |
15126 | loc += (relgot->reloc_count++ | |
411e1bfb AM |
15127 | * sizeof (Elf64_External_Rela)); |
15128 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); | |
15129 | } | |
15130 | ||
ad8e1ba5 | 15131 | /* Init the .got section contents here if we're not |
81407a69 | 15132 | emitting a reloc. */ |
d881513a | 15133 | else |
411e1bfb | 15134 | { |
4cc603a5 | 15135 | relocation += addend; |
f0158f44 | 15136 | if (tls_type != 0) |
411e1bfb | 15137 | { |
989f9879 AM |
15138 | if (htab->elf.tls_sec == NULL) |
15139 | relocation = 0; | |
15140 | else | |
15141 | { | |
f0158f44 AM |
15142 | if (tls_type & TLS_LD) |
15143 | relocation = 0; | |
15144 | else | |
15145 | relocation -= htab->elf.tls_sec->vma + DTP_OFFSET; | |
676ee2b5 | 15146 | if (tls_type & TLS_TPREL) |
989f9879 AM |
15147 | relocation += DTP_OFFSET - TP_OFFSET; |
15148 | } | |
5bd4f169 | 15149 | |
f0158f44 | 15150 | if (tls_type & (TLS_GD | TLS_LD)) |
7b609f53 AM |
15151 | { |
15152 | bfd_put_64 (output_bfd, relocation, | |
e717da7e | 15153 | got->contents + off + 8); |
676ee2b5 | 15154 | relocation = 1; |
7b609f53 | 15155 | } |
411e1bfb AM |
15156 | } |
15157 | bfd_put_64 (output_bfd, relocation, | |
e717da7e | 15158 | got->contents + off); |
5bd4f169 AM |
15159 | } |
15160 | } | |
15161 | ||
65f38f15 AM |
15162 | if (off >= (bfd_vma) -2) |
15163 | abort (); | |
15164 | ||
bf102f86 | 15165 | relocation = got->output_section->vma + got->output_offset + off; |
6f20ed8a | 15166 | addend = -(TOCstart + htab->sec_info[input_section->id].toc_off); |
5bd4f169 | 15167 | } |
65f38f15 AM |
15168 | break; |
15169 | ||
15170 | case R_PPC64_PLT16_HA: | |
15171 | case R_PPC64_PLT16_HI: | |
15172 | case R_PPC64_PLT16_LO: | |
08be3224 | 15173 | case R_PPC64_PLT16_LO_DS: |
65f38f15 AM |
15174 | case R_PPC64_PLT32: |
15175 | case R_PPC64_PLT64: | |
23cedd1d AM |
15176 | case R_PPC64_PLTSEQ: |
15177 | case R_PPC64_PLTCALL: | |
65f38f15 AM |
15178 | /* Relocation is to the entry for this symbol in the |
15179 | procedure linkage table. */ | |
23cedd1d | 15180 | unresolved_reloc = TRUE; |
cbf95972 AM |
15181 | { |
15182 | struct plt_entry **plt_list = NULL; | |
15183 | if (h != NULL) | |
15184 | plt_list = &h->elf.plt.plist; | |
15185 | else if (local_got_ents != NULL) | |
15186 | { | |
15187 | struct plt_entry **local_plt = (struct plt_entry **) | |
15188 | (local_got_ents + symtab_hdr->sh_info); | |
2d7ad24e | 15189 | plt_list = local_plt + r_symndx; |
cbf95972 AM |
15190 | } |
15191 | if (plt_list) | |
15192 | { | |
15193 | struct plt_entry *ent; | |
65f38f15 | 15194 | |
cbf95972 AM |
15195 | for (ent = *plt_list; ent != NULL; ent = ent->next) |
15196 | if (ent->plt.offset != (bfd_vma) -1 | |
15197 | && ent->addend == orig_rel.r_addend) | |
15198 | { | |
15199 | asection *plt; | |
08be3224 | 15200 | bfd_vma got; |
cbf95972 AM |
15201 | |
15202 | plt = htab->elf.splt; | |
15203 | if (!htab->elf.dynamic_sections_created | |
15204 | || h == NULL | |
15205 | || h->elf.dynindx == -1) | |
2d7ad24e AM |
15206 | { |
15207 | if (h != NULL | |
15208 | ? h->elf.type == STT_GNU_IFUNC | |
15209 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
15210 | plt = htab->elf.iplt; | |
15211 | else | |
15212 | plt = htab->pltlocal; | |
15213 | } | |
15214 | relocation = (plt->output_section->vma | |
15215 | + plt->output_offset | |
15216 | + ent->plt.offset); | |
08be3224 AM |
15217 | if (r_type == R_PPC64_PLT16_HA |
15218 | || r_type ==R_PPC64_PLT16_HI | |
15219 | || r_type ==R_PPC64_PLT16_LO | |
15220 | || r_type ==R_PPC64_PLT16_LO_DS) | |
15221 | { | |
15222 | got = (elf_gp (output_bfd) | |
15223 | + htab->sec_info[input_section->id].toc_off); | |
15224 | relocation -= got; | |
15225 | } | |
cbf95972 AM |
15226 | addend = 0; |
15227 | unresolved_reloc = FALSE; | |
15228 | break; | |
15229 | } | |
15230 | } | |
15231 | } | |
65f38f15 | 15232 | break; |
5bd4f169 | 15233 | |
0b13192e AM |
15234 | case R_PPC64_TOC: |
15235 | /* Relocation value is TOC base. */ | |
15236 | relocation = TOCstart; | |
cf35638d | 15237 | if (r_symndx == STN_UNDEF) |
6f20ed8a | 15238 | relocation += htab->sec_info[input_section->id].toc_off; |
8517fae7 AM |
15239 | else if (unresolved_reloc) |
15240 | ; | |
6f20ed8a AM |
15241 | else if (sec != NULL && sec->id < htab->sec_info_arr_size) |
15242 | relocation += htab->sec_info[sec->id].toc_off; | |
0b13192e AM |
15243 | else |
15244 | unresolved_reloc = TRUE; | |
ab96bf03 | 15245 | goto dodyn; |
0b13192e | 15246 | |
5bd4f169 AM |
15247 | /* TOC16 relocs. We want the offset relative to the TOC base, |
15248 | which is the address of the start of the TOC plus 0x8000. | |
15249 | The TOC consists of sections .got, .toc, .tocbss, and .plt, | |
15250 | in this order. */ | |
65f38f15 AM |
15251 | case R_PPC64_TOC16: |
15252 | case R_PPC64_TOC16_LO: | |
15253 | case R_PPC64_TOC16_HI: | |
15254 | case R_PPC64_TOC16_DS: | |
15255 | case R_PPC64_TOC16_LO_DS: | |
15256 | case R_PPC64_TOC16_HA: | |
6f20ed8a | 15257 | addend -= TOCstart + htab->sec_info[input_section->id].toc_off; |
5bd4f169 AM |
15258 | break; |
15259 | ||
15260 | /* Relocate against the beginning of the section. */ | |
65f38f15 AM |
15261 | case R_PPC64_SECTOFF: |
15262 | case R_PPC64_SECTOFF_LO: | |
15263 | case R_PPC64_SECTOFF_HI: | |
15264 | case R_PPC64_SECTOFF_DS: | |
15265 | case R_PPC64_SECTOFF_LO_DS: | |
15266 | case R_PPC64_SECTOFF_HA: | |
4ce794b7 | 15267 | if (sec != NULL) |
65f38f15 | 15268 | addend -= sec->output_section->vma; |
5bd4f169 AM |
15269 | break; |
15270 | ||
25f23106 AM |
15271 | case R_PPC64_REL16: |
15272 | case R_PPC64_REL16_LO: | |
15273 | case R_PPC64_REL16_HI: | |
15274 | case R_PPC64_REL16_HA: | |
a680de9a | 15275 | case R_PPC64_REL16DX_HA: |
25f23106 AM |
15276 | break; |
15277 | ||
721956f4 AM |
15278 | case R_PPC64_REL14: |
15279 | case R_PPC64_REL14_BRNTAKEN: | |
15280 | case R_PPC64_REL14_BRTAKEN: | |
5d1634d7 AM |
15281 | case R_PPC64_REL24: |
15282 | break; | |
15283 | ||
411e1bfb AM |
15284 | case R_PPC64_TPREL16: |
15285 | case R_PPC64_TPREL16_LO: | |
15286 | case R_PPC64_TPREL16_HI: | |
15287 | case R_PPC64_TPREL16_HA: | |
15288 | case R_PPC64_TPREL16_DS: | |
15289 | case R_PPC64_TPREL16_LO_DS: | |
f9c6b907 AM |
15290 | case R_PPC64_TPREL16_HIGH: |
15291 | case R_PPC64_TPREL16_HIGHA: | |
411e1bfb AM |
15292 | case R_PPC64_TPREL16_HIGHER: |
15293 | case R_PPC64_TPREL16_HIGHERA: | |
15294 | case R_PPC64_TPREL16_HIGHEST: | |
15295 | case R_PPC64_TPREL16_HIGHESTA: | |
766bc656 AM |
15296 | if (h != NULL |
15297 | && h->elf.root.type == bfd_link_hash_undefweak | |
15298 | && h->elf.dynindx == -1) | |
15299 | { | |
15300 | /* Make this relocation against an undefined weak symbol | |
15301 | resolve to zero. This is really just a tweak, since | |
15302 | code using weak externs ought to check that they are | |
15303 | defined before using them. */ | |
15304 | bfd_byte *p = contents + rel->r_offset - d_offset; | |
15305 | ||
95f0d0d2 | 15306 | insn = bfd_get_32 (input_bfd, p); |
766bc656 AM |
15307 | insn = _bfd_elf_ppc_at_tprel_transform (insn, 13); |
15308 | if (insn != 0) | |
95f0d0d2 | 15309 | bfd_put_32 (input_bfd, insn, p); |
766bc656 AM |
15310 | break; |
15311 | } | |
989f9879 AM |
15312 | if (htab->elf.tls_sec != NULL) |
15313 | addend -= htab->elf.tls_sec->vma + TP_OFFSET; | |
7c8bbca5 AM |
15314 | /* The TPREL16 relocs shouldn't really be used in shared |
15315 | libs or with non-local symbols as that will result in | |
15316 | DT_TEXTREL being set, but support them anyway. */ | |
15317 | goto dodyn; | |
411e1bfb AM |
15318 | |
15319 | case R_PPC64_DTPREL16: | |
15320 | case R_PPC64_DTPREL16_LO: | |
15321 | case R_PPC64_DTPREL16_HI: | |
15322 | case R_PPC64_DTPREL16_HA: | |
15323 | case R_PPC64_DTPREL16_DS: | |
15324 | case R_PPC64_DTPREL16_LO_DS: | |
f9c6b907 AM |
15325 | case R_PPC64_DTPREL16_HIGH: |
15326 | case R_PPC64_DTPREL16_HIGHA: | |
411e1bfb AM |
15327 | case R_PPC64_DTPREL16_HIGHER: |
15328 | case R_PPC64_DTPREL16_HIGHERA: | |
15329 | case R_PPC64_DTPREL16_HIGHEST: | |
15330 | case R_PPC64_DTPREL16_HIGHESTA: | |
989f9879 AM |
15331 | if (htab->elf.tls_sec != NULL) |
15332 | addend -= htab->elf.tls_sec->vma + DTP_OFFSET; | |
411e1bfb AM |
15333 | break; |
15334 | ||
45965137 AM |
15335 | case R_PPC64_ADDR64_LOCAL: |
15336 | addend += PPC64_LOCAL_ENTRY_OFFSET (h != NULL | |
15337 | ? h->elf.other | |
15338 | : sym->st_other); | |
15339 | break; | |
15340 | ||
e515b051 AM |
15341 | case R_PPC64_DTPMOD64: |
15342 | relocation = 1; | |
15343 | addend = 0; | |
15344 | goto dodyn; | |
15345 | ||
411e1bfb | 15346 | case R_PPC64_TPREL64: |
989f9879 AM |
15347 | if (htab->elf.tls_sec != NULL) |
15348 | addend -= htab->elf.tls_sec->vma + TP_OFFSET; | |
411e1bfb AM |
15349 | goto dodyn; |
15350 | ||
15351 | case R_PPC64_DTPREL64: | |
989f9879 AM |
15352 | if (htab->elf.tls_sec != NULL) |
15353 | addend -= htab->elf.tls_sec->vma + DTP_OFFSET; | |
1a0670f3 | 15354 | /* Fall through. */ |
411e1bfb | 15355 | |
65f38f15 AM |
15356 | /* Relocations that may need to be propagated if this is a |
15357 | dynamic object. */ | |
04c9666a | 15358 | case R_PPC64_REL30: |
65f38f15 AM |
15359 | case R_PPC64_REL32: |
15360 | case R_PPC64_REL64: | |
15361 | case R_PPC64_ADDR14: | |
15362 | case R_PPC64_ADDR14_BRNTAKEN: | |
15363 | case R_PPC64_ADDR14_BRTAKEN: | |
15364 | case R_PPC64_ADDR16: | |
15365 | case R_PPC64_ADDR16_DS: | |
15366 | case R_PPC64_ADDR16_HA: | |
15367 | case R_PPC64_ADDR16_HI: | |
f9c6b907 AM |
15368 | case R_PPC64_ADDR16_HIGH: |
15369 | case R_PPC64_ADDR16_HIGHA: | |
65f38f15 AM |
15370 | case R_PPC64_ADDR16_HIGHER: |
15371 | case R_PPC64_ADDR16_HIGHERA: | |
15372 | case R_PPC64_ADDR16_HIGHEST: | |
15373 | case R_PPC64_ADDR16_HIGHESTA: | |
15374 | case R_PPC64_ADDR16_LO: | |
15375 | case R_PPC64_ADDR16_LO_DS: | |
15376 | case R_PPC64_ADDR24: | |
65f38f15 AM |
15377 | case R_PPC64_ADDR32: |
15378 | case R_PPC64_ADDR64: | |
15379 | case R_PPC64_UADDR16: | |
15380 | case R_PPC64_UADDR32: | |
15381 | case R_PPC64_UADDR64: | |
411e1bfb | 15382 | dodyn: |
5d1634d7 | 15383 | if ((input_section->flags & SEC_ALLOC) == 0) |
ec338859 AM |
15384 | break; |
15385 | ||
41bd81ab AM |
15386 | if (NO_OPD_RELOCS && is_opd) |
15387 | break; | |
15388 | ||
8a9e8e72 | 15389 | if (bfd_link_pic (info) |
b1b07054 AM |
15390 | ? ((h == NULL |
15391 | || h->dyn_relocs != NULL) | |
15392 | && ((h != NULL && pc_dynrelocs (h)) | |
15393 | || must_be_dyn_reloc (info, r_type))) | |
8a9e8e72 AM |
15394 | : (h != NULL |
15395 | ? h->dyn_relocs != NULL | |
d311bc8b | 15396 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)) |
65f38f15 | 15397 | { |
b34976b6 | 15398 | bfd_boolean skip, relocate; |
65f38f15 | 15399 | asection *sreloc; |
1cf1f670 | 15400 | bfd_vma out_off; |
82e66161 | 15401 | long indx = 0; |
65f38f15 AM |
15402 | |
15403 | /* When generating a dynamic object, these relocations | |
15404 | are copied into the output file to be resolved at run | |
15405 | time. */ | |
15406 | ||
b34976b6 AM |
15407 | skip = FALSE; |
15408 | relocate = FALSE; | |
65f38f15 | 15409 | |
1cf1f670 AM |
15410 | out_off = _bfd_elf_section_offset (output_bfd, info, |
15411 | input_section, rel->r_offset); | |
15412 | if (out_off == (bfd_vma) -1) | |
b34976b6 | 15413 | skip = TRUE; |
1cf1f670 | 15414 | else if (out_off == (bfd_vma) -2) |
b34976b6 | 15415 | skip = TRUE, relocate = TRUE; |
1cf1f670 AM |
15416 | out_off += (input_section->output_section->vma |
15417 | + input_section->output_offset); | |
15418 | outrel.r_offset = out_off; | |
411e1bfb | 15419 | outrel.r_addend = rel->r_addend; |
65f38f15 | 15420 | |
1cf1f670 AM |
15421 | /* Optimize unaligned reloc use. */ |
15422 | if ((r_type == R_PPC64_ADDR64 && (out_off & 7) != 0) | |
15423 | || (r_type == R_PPC64_UADDR64 && (out_off & 7) == 0)) | |
15424 | r_type ^= R_PPC64_ADDR64 ^ R_PPC64_UADDR64; | |
15425 | else if ((r_type == R_PPC64_ADDR32 && (out_off & 3) != 0) | |
15426 | || (r_type == R_PPC64_UADDR32 && (out_off & 3) == 0)) | |
15427 | r_type ^= R_PPC64_ADDR32 ^ R_PPC64_UADDR32; | |
15428 | else if ((r_type == R_PPC64_ADDR16 && (out_off & 1) != 0) | |
15429 | || (r_type == R_PPC64_UADDR16 && (out_off & 1) == 0)) | |
15430 | r_type ^= R_PPC64_ADDR16 ^ R_PPC64_UADDR16; | |
15431 | ||
65f38f15 | 15432 | if (skip) |
0bb2d96a | 15433 | memset (&outrel, 0, sizeof outrel); |
afe397ea | 15434 | else if (!SYMBOL_REFERENCES_LOCAL (info, &h->elf) |
0b13192e AM |
15435 | && !is_opd |
15436 | && r_type != R_PPC64_TOC) | |
14acf4dc | 15437 | { |
82e66161 AM |
15438 | indx = h->elf.dynindx; |
15439 | BFD_ASSERT (indx != -1); | |
15440 | outrel.r_info = ELF64_R_INFO (indx, r_type); | |
14acf4dc | 15441 | } |
65f38f15 AM |
15442 | else |
15443 | { | |
41bd81ab AM |
15444 | /* This symbol is local, or marked to become local, |
15445 | or this is an opd section reloc which must point | |
15446 | at a local function. */ | |
65f38f15 | 15447 | outrel.r_addend += relocation; |
e86ce104 | 15448 | if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC) |
65f38f15 | 15449 | { |
3fad3c7c | 15450 | if (is_opd && h != NULL) |
afbe61cf AM |
15451 | { |
15452 | /* Lie about opd entries. This case occurs | |
15453 | when building shared libraries and we | |
15454 | reference a function in another shared | |
3fad3c7c AM |
15455 | lib. The same thing happens for a weak |
15456 | definition in an application that's | |
15457 | overridden by a strong definition in a | |
15458 | shared lib. (I believe this is a generic | |
15459 | bug in binutils handling of weak syms.) | |
15460 | In these cases we won't use the opd | |
1e2f5b6e | 15461 | entry in this lib. */ |
b34976b6 | 15462 | unresolved_reloc = FALSE; |
afbe61cf | 15463 | } |
25f23106 AM |
15464 | if (!is_opd |
15465 | && r_type == R_PPC64_ADDR64 | |
15466 | && (h != NULL | |
15467 | ? h->elf.type == STT_GNU_IFUNC | |
15468 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)) | |
15469 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE); | |
15470 | else | |
15471 | { | |
15472 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
81407a69 | 15473 | |
25f23106 AM |
15474 | /* We need to relocate .opd contents for ld.so. |
15475 | Prelink also wants simple and consistent rules | |
15476 | for relocs. This make all RELATIVE relocs have | |
15477 | *r_offset equal to r_addend. */ | |
15478 | relocate = TRUE; | |
15479 | } | |
65f38f15 AM |
15480 | } |
15481 | else | |
15482 | { | |
25f23106 AM |
15483 | if (h != NULL |
15484 | ? h->elf.type == STT_GNU_IFUNC | |
15485 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
15486 | { | |
25f53a85 | 15487 | info->callbacks->einfo |
695344c0 | 15488 | /* xgettext:c-format */ |
174d0a74 | 15489 | (_("%H: %s for indirect " |
c1c8c1ef | 15490 | "function `%pT' unsupported\n"), |
25f53a85 | 15491 | input_bfd, input_section, rel->r_offset, |
25f23106 AM |
15492 | ppc64_elf_howto_table[r_type]->name, |
15493 | sym_name); | |
15494 | ret = FALSE; | |
15495 | } | |
cf35638d | 15496 | else if (r_symndx == STN_UNDEF || bfd_is_abs_section (sec)) |
65f38f15 AM |
15497 | ; |
15498 | else if (sec == NULL || sec->owner == NULL) | |
15499 | { | |
15500 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 15501 | return FALSE; |
65f38f15 AM |
15502 | } |
15503 | else | |
15504 | { | |
15505 | asection *osec; | |
15506 | ||
15507 | osec = sec->output_section; | |
15508 | indx = elf_section_data (osec)->dynindx; | |
15509 | ||
74541ad4 AM |
15510 | if (indx == 0) |
15511 | { | |
15512 | if ((osec->flags & SEC_READONLY) == 0 | |
15513 | && htab->elf.data_index_section != NULL) | |
15514 | osec = htab->elf.data_index_section; | |
15515 | else | |
15516 | osec = htab->elf.text_index_section; | |
15517 | indx = elf_section_data (osec)->dynindx; | |
15518 | } | |
15519 | BFD_ASSERT (indx != 0); | |
15520 | ||
65f38f15 AM |
15521 | /* We are turning this relocation into one |
15522 | against a section symbol, so subtract out | |
15523 | the output section's address but not the | |
15524 | offset of the input section in the output | |
15525 | section. */ | |
15526 | outrel.r_addend -= osec->vma; | |
15527 | } | |
15528 | ||
15529 | outrel.r_info = ELF64_R_INFO (indx, r_type); | |
15530 | } | |
15531 | } | |
15532 | ||
15533 | sreloc = elf_section_data (input_section)->sreloc; | |
19e08130 AM |
15534 | if (h != NULL |
15535 | ? h->elf.type == STT_GNU_IFUNC | |
15536 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
82e66161 AM |
15537 | { |
15538 | sreloc = htab->elf.irelplt; | |
15539 | if (indx == 0) | |
15540 | htab->local_ifunc_resolver = 1; | |
15541 | else if (is_static_defined (&h->elf)) | |
15542 | htab->maybe_local_ifunc_resolver = 1; | |
15543 | } | |
65f38f15 AM |
15544 | if (sreloc == NULL) |
15545 | abort (); | |
15546 | ||
dfbb6ac9 AM |
15547 | if (sreloc->reloc_count * sizeof (Elf64_External_Rela) |
15548 | >= sreloc->size) | |
15549 | abort (); | |
947216bf AM |
15550 | loc = sreloc->contents; |
15551 | loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela); | |
65f38f15 AM |
15552 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); |
15553 | ||
15554 | /* If this reloc is against an external symbol, it will | |
15555 | be computed at runtime, so there's no need to do | |
81407a69 AM |
15556 | anything now. However, for the sake of prelink ensure |
15557 | that the section contents are a known value. */ | |
65f38f15 | 15558 | if (! relocate) |
81407a69 AM |
15559 | { |
15560 | unresolved_reloc = FALSE; | |
15561 | /* The value chosen here is quite arbitrary as ld.so | |
15562 | ignores section contents except for the special | |
15563 | case of .opd where the contents might be accessed | |
15564 | before relocation. Choose zero, as that won't | |
15565 | cause reloc overflow. */ | |
15566 | relocation = 0; | |
15567 | addend = 0; | |
15568 | /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs | |
15569 | to improve backward compatibility with older | |
15570 | versions of ld. */ | |
15571 | if (r_type == R_PPC64_ADDR64) | |
15572 | addend = outrel.r_addend; | |
15573 | /* Adjust pc_relative relocs to have zero in *r_offset. */ | |
4ce794b7 | 15574 | else if (ppc64_elf_howto_table[r_type]->pc_relative) |
f0158f44 | 15575 | addend = outrel.r_offset; |
81407a69 | 15576 | } |
65f38f15 | 15577 | } |
5bd4f169 AM |
15578 | break; |
15579 | ||
65f38f15 AM |
15580 | case R_PPC64_COPY: |
15581 | case R_PPC64_GLOB_DAT: | |
15582 | case R_PPC64_JMP_SLOT: | |
25f23106 | 15583 | case R_PPC64_JMP_IREL: |
65f38f15 AM |
15584 | case R_PPC64_RELATIVE: |
15585 | /* We shouldn't ever see these dynamic relocs in relocatable | |
15586 | files. */ | |
ae9a127f | 15587 | /* Fall through. */ |
65f38f15 AM |
15588 | |
15589 | case R_PPC64_PLTGOT16: | |
15590 | case R_PPC64_PLTGOT16_DS: | |
15591 | case R_PPC64_PLTGOT16_HA: | |
15592 | case R_PPC64_PLTGOT16_HI: | |
15593 | case R_PPC64_PLTGOT16_LO: | |
15594 | case R_PPC64_PLTGOT16_LO_DS: | |
15595 | case R_PPC64_PLTREL32: | |
15596 | case R_PPC64_PLTREL64: | |
15597 | /* These ones haven't been implemented yet. */ | |
15598 | ||
25f53a85 | 15599 | info->callbacks->einfo |
695344c0 | 15600 | /* xgettext:c-format */ |
c1c8c1ef | 15601 | (_("%P: %pB: %s is not supported for `%pT'\n"), |
d003868e | 15602 | input_bfd, |
4ce794b7 | 15603 | ppc64_elf_howto_table[r_type]->name, sym_name); |
5bd4f169 AM |
15604 | |
15605 | bfd_set_error (bfd_error_invalid_operation); | |
b34976b6 | 15606 | ret = FALSE; |
c316a17c | 15607 | goto copy_reloc; |
65f38f15 | 15608 | } |
5bd4f169 | 15609 | |
67f0cbdb AM |
15610 | /* Multi-instruction sequences that access the TOC can be |
15611 | optimized, eg. addis ra,r2,0; addi rb,ra,x; | |
07d6d2b8 | 15612 | to nop; addi rb,r2,x; */ |
67f0cbdb AM |
15613 | switch (r_type) |
15614 | { | |
15615 | default: | |
15616 | break; | |
15617 | ||
15618 | case R_PPC64_GOT_TLSLD16_HI: | |
15619 | case R_PPC64_GOT_TLSGD16_HI: | |
15620 | case R_PPC64_GOT_TPREL16_HI: | |
15621 | case R_PPC64_GOT_DTPREL16_HI: | |
15622 | case R_PPC64_GOT16_HI: | |
15623 | case R_PPC64_TOC16_HI: | |
15624 | /* These relocs would only be useful if building up an | |
15625 | offset to later add to r2, perhaps in an indexed | |
15626 | addressing mode instruction. Don't try to optimize. | |
15627 | Unfortunately, the possibility of someone building up an | |
15628 | offset like this or even with the HA relocs, means that | |
15629 | we need to check the high insn when optimizing the low | |
15630 | insn. */ | |
15631 | break; | |
15632 | ||
23cedd1d AM |
15633 | case R_PPC64_PLTCALL: |
15634 | if (unresolved_reloc) | |
15635 | { | |
15636 | /* No plt entry. Make this into a direct call. */ | |
15637 | bfd_byte *p = contents + rel->r_offset; | |
15638 | insn = bfd_get_32 (input_bfd, p); | |
15639 | insn &= 1; | |
15640 | bfd_put_32 (input_bfd, B_DOT | insn, p); | |
15641 | bfd_put_32 (input_bfd, NOP, p + 4); | |
15642 | unresolved_reloc = save_unresolved_reloc; | |
15643 | r_type = R_PPC64_REL24; | |
15644 | } | |
15645 | break; | |
15646 | ||
15647 | case R_PPC64_PLTSEQ: | |
15648 | if (unresolved_reloc) | |
15649 | { | |
15650 | unresolved_reloc = FALSE; | |
15651 | goto nop_it; | |
15652 | } | |
15653 | break; | |
15654 | ||
15655 | case R_PPC64_PLT16_HA: | |
15656 | if (unresolved_reloc) | |
15657 | { | |
15658 | unresolved_reloc = FALSE; | |
15659 | goto nop_it; | |
15660 | } | |
15661 | /* Fall through. */ | |
67f0cbdb AM |
15662 | case R_PPC64_GOT_TLSLD16_HA: |
15663 | case R_PPC64_GOT_TLSGD16_HA: | |
15664 | case R_PPC64_GOT_TPREL16_HA: | |
15665 | case R_PPC64_GOT_DTPREL16_HA: | |
15666 | case R_PPC64_GOT16_HA: | |
15667 | case R_PPC64_TOC16_HA: | |
98528052 | 15668 | if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000 |
560c8763 | 15669 | && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn) |
98528052 | 15670 | { |
23cedd1d AM |
15671 | bfd_byte *p; |
15672 | nop_it: | |
15673 | p = contents + (rel->r_offset & ~3); | |
98528052 | 15674 | bfd_put_32 (input_bfd, NOP, p); |
d830549d | 15675 | goto copy_reloc; |
98528052 | 15676 | } |
67f0cbdb AM |
15677 | break; |
15678 | ||
23cedd1d AM |
15679 | case R_PPC64_PLT16_LO: |
15680 | case R_PPC64_PLT16_LO_DS: | |
15681 | if (unresolved_reloc) | |
15682 | { | |
15683 | unresolved_reloc = FALSE; | |
15684 | goto nop_it; | |
15685 | } | |
15686 | /* Fall through. */ | |
67f0cbdb AM |
15687 | case R_PPC64_GOT_TLSLD16_LO: |
15688 | case R_PPC64_GOT_TLSGD16_LO: | |
15689 | case R_PPC64_GOT_TPREL16_LO_DS: | |
15690 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
15691 | case R_PPC64_GOT16_LO: | |
15692 | case R_PPC64_GOT16_LO_DS: | |
15693 | case R_PPC64_TOC16_LO: | |
15694 | case R_PPC64_TOC16_LO_DS: | |
98528052 | 15695 | if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000 |
560c8763 | 15696 | && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn) |
67f0cbdb AM |
15697 | { |
15698 | bfd_byte *p = contents + (rel->r_offset & ~3); | |
15699 | insn = bfd_get_32 (input_bfd, p); | |
560c8763 AM |
15700 | if ((insn & (0x3f << 26)) == 12u << 26 /* addic */) |
15701 | { | |
15702 | /* Transform addic to addi when we change reg. */ | |
15703 | insn &= ~((0x3f << 26) | (0x1f << 16)); | |
15704 | insn |= (14u << 26) | (2 << 16); | |
15705 | } | |
15706 | else | |
67f0cbdb | 15707 | { |
98528052 AM |
15708 | insn &= ~(0x1f << 16); |
15709 | insn |= 2 << 16; | |
67f0cbdb | 15710 | } |
560c8763 | 15711 | bfd_put_32 (input_bfd, insn, p); |
67f0cbdb AM |
15712 | } |
15713 | break; | |
9a23f96e AM |
15714 | |
15715 | case R_PPC64_TPREL16_HA: | |
15716 | if (htab->do_tls_opt && relocation + addend + 0x8000 < 0x10000) | |
15717 | { | |
15718 | bfd_byte *p = contents + (rel->r_offset & ~3); | |
15719 | insn = bfd_get_32 (input_bfd, p); | |
15720 | if ((insn & ((0x3f << 26) | 0x1f << 16)) | |
15721 | != ((15u << 26) | (13 << 16)) /* addis rt,13,imm */) | |
15722 | /* xgettext:c-format */ | |
15723 | info->callbacks->minfo | |
15724 | (_("%H: warning: %s unexpected insn %#x.\n"), | |
d830549d AM |
15725 | input_bfd, input_section, rel->r_offset, |
15726 | ppc64_elf_howto_table[r_type]->name, insn); | |
9a23f96e | 15727 | else |
d830549d AM |
15728 | { |
15729 | bfd_put_32 (input_bfd, NOP, p); | |
15730 | goto copy_reloc; | |
15731 | } | |
9a23f96e AM |
15732 | } |
15733 | break; | |
15734 | ||
15735 | case R_PPC64_TPREL16_LO: | |
15736 | case R_PPC64_TPREL16_LO_DS: | |
15737 | if (htab->do_tls_opt && relocation + addend + 0x8000 < 0x10000) | |
15738 | { | |
15739 | bfd_byte *p = contents + (rel->r_offset & ~3); | |
15740 | insn = bfd_get_32 (input_bfd, p); | |
15741 | insn &= ~(0x1f << 16); | |
15742 | insn |= 13 << 16; | |
15743 | bfd_put_32 (input_bfd, insn, p); | |
15744 | } | |
15745 | break; | |
67f0cbdb AM |
15746 | } |
15747 | ||
65f38f15 AM |
15748 | /* Do any further special processing. */ |
15749 | switch (r_type) | |
15750 | { | |
15751 | default: | |
15752 | break; | |
15753 | ||
25f23106 | 15754 | case R_PPC64_REL16_HA: |
a680de9a | 15755 | case R_PPC64_REL16DX_HA: |
f9c6b907 AM |
15756 | case R_PPC64_ADDR16_HA: |
15757 | case R_PPC64_ADDR16_HIGHA: | |
65f38f15 AM |
15758 | case R_PPC64_ADDR16_HIGHERA: |
15759 | case R_PPC64_ADDR16_HIGHESTA: | |
65f38f15 AM |
15760 | case R_PPC64_TOC16_HA: |
15761 | case R_PPC64_SECTOFF_HA: | |
411e1bfb | 15762 | case R_PPC64_TPREL16_HA: |
f9c6b907 | 15763 | case R_PPC64_TPREL16_HIGHA: |
411e1bfb | 15764 | case R_PPC64_TPREL16_HIGHERA: |
411e1bfb | 15765 | case R_PPC64_TPREL16_HIGHESTA: |
f9c6b907 AM |
15766 | case R_PPC64_DTPREL16_HA: |
15767 | case R_PPC64_DTPREL16_HIGHA: | |
411e1bfb | 15768 | case R_PPC64_DTPREL16_HIGHERA: |
411e1bfb | 15769 | case R_PPC64_DTPREL16_HIGHESTA: |
65f38f15 AM |
15770 | /* It's just possible that this symbol is a weak symbol |
15771 | that's not actually defined anywhere. In that case, | |
15772 | 'sec' would be NULL, and we should leave the symbol | |
15773 | alone (it will be set to zero elsewhere in the link). */ | |
5c5f6e17 AM |
15774 | if (sec == NULL) |
15775 | break; | |
1a0670f3 | 15776 | /* Fall through. */ |
5c5f6e17 AM |
15777 | |
15778 | case R_PPC64_GOT16_HA: | |
15779 | case R_PPC64_PLTGOT16_HA: | |
15780 | case R_PPC64_PLT16_HA: | |
15781 | case R_PPC64_GOT_TLSGD16_HA: | |
15782 | case R_PPC64_GOT_TLSLD16_HA: | |
15783 | case R_PPC64_GOT_TPREL16_HA: | |
15784 | case R_PPC64_GOT_DTPREL16_HA: | |
15785 | /* Add 0x10000 if sign bit in 0:15 is set. | |
15786 | Bits 0:15 are not used. */ | |
15787 | addend += 0x8000; | |
65f38f15 AM |
15788 | break; |
15789 | ||
15790 | case R_PPC64_ADDR16_DS: | |
15791 | case R_PPC64_ADDR16_LO_DS: | |
15792 | case R_PPC64_GOT16_DS: | |
15793 | case R_PPC64_GOT16_LO_DS: | |
15794 | case R_PPC64_PLT16_LO_DS: | |
15795 | case R_PPC64_SECTOFF_DS: | |
15796 | case R_PPC64_SECTOFF_LO_DS: | |
15797 | case R_PPC64_TOC16_DS: | |
15798 | case R_PPC64_TOC16_LO_DS: | |
15799 | case R_PPC64_PLTGOT16_DS: | |
15800 | case R_PPC64_PLTGOT16_LO_DS: | |
411e1bfb AM |
15801 | case R_PPC64_GOT_TPREL16_DS: |
15802 | case R_PPC64_GOT_TPREL16_LO_DS: | |
15803 | case R_PPC64_GOT_DTPREL16_DS: | |
15804 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
15805 | case R_PPC64_TPREL16_DS: | |
15806 | case R_PPC64_TPREL16_LO_DS: | |
15807 | case R_PPC64_DTPREL16_DS: | |
15808 | case R_PPC64_DTPREL16_LO_DS: | |
adadcc0c AM |
15809 | insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3)); |
15810 | mask = 3; | |
a680de9a PB |
15811 | /* If this reloc is against an lq, lxv, or stxv insn, then |
15812 | the value must be a multiple of 16. This is somewhat of | |
15813 | a hack, but the "correct" way to do this by defining _DQ | |
15814 | forms of all the _DS relocs bloats all reloc switches in | |
15815 | this file. It doesn't make much sense to use these | |
15816 | relocs in data, so testing the insn should be safe. */ | |
15817 | if ((insn & (0x3f << 26)) == (56u << 26) | |
15818 | || ((insn & (0x3f << 26)) == (61u << 26) && (insn & 3) == 1)) | |
adadcc0c | 15819 | mask = 15; |
a680de9a PB |
15820 | relocation += addend; |
15821 | addend = insn & (mask ^ 3); | |
15822 | if ((relocation & mask) != 0) | |
65f38f15 | 15823 | { |
a680de9a | 15824 | relocation ^= relocation & mask; |
25f53a85 | 15825 | info->callbacks->einfo |
695344c0 | 15826 | /* xgettext:c-format */ |
174d0a74 | 15827 | (_("%H: error: %s not a multiple of %u\n"), |
25f53a85 | 15828 | input_bfd, input_section, rel->r_offset, |
d830549d | 15829 | ppc64_elf_howto_table[r_type]->name, |
adadcc0c | 15830 | mask + 1); |
65f38f15 | 15831 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 15832 | ret = FALSE; |
c316a17c | 15833 | goto copy_reloc; |
65f38f15 AM |
15834 | } |
15835 | break; | |
5bd4f169 AM |
15836 | } |
15837 | ||
239e1f3a AM |
15838 | /* Dynamic relocs are not propagated for SEC_DEBUGGING sections |
15839 | because such sections are not SEC_ALLOC and thus ld.so will | |
15840 | not process them. */ | |
d830549d | 15841 | howto = ppc64_elf_howto_table[(int) r_type]; |
65f38f15 | 15842 | if (unresolved_reloc |
239e1f3a | 15843 | && !((input_section->flags & SEC_DEBUGGING) != 0 |
1d5316ab AM |
15844 | && h->elf.def_dynamic) |
15845 | && _bfd_elf_section_offset (output_bfd, info, input_section, | |
15846 | rel->r_offset) != (bfd_vma) -1) | |
9c07fe7c | 15847 | { |
25f53a85 | 15848 | info->callbacks->einfo |
695344c0 | 15849 | /* xgettext:c-format */ |
c1c8c1ef | 15850 | (_("%H: unresolvable %s against `%pT'\n"), |
25f53a85 | 15851 | input_bfd, input_section, rel->r_offset, |
b80eed39 | 15852 | howto->name, |
039b3fef | 15853 | h->elf.root.root.string); |
b34976b6 | 15854 | ret = FALSE; |
9c07fe7c | 15855 | } |
5bd4f169 | 15856 | |
b80eed39 AM |
15857 | /* 16-bit fields in insns mostly have signed values, but a |
15858 | few insns have 16-bit unsigned values. Really, we should | |
15859 | have different reloc types. */ | |
15860 | if (howto->complain_on_overflow != complain_overflow_dont | |
15861 | && howto->dst_mask == 0xffff | |
15862 | && (input_section->flags & SEC_CODE) != 0) | |
15863 | { | |
15864 | enum complain_overflow complain = complain_overflow_signed; | |
15865 | ||
15866 | insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3)); | |
a47622ac AM |
15867 | if ((insn & (0x3f << 26)) == 10u << 26 /* cmpli */) |
15868 | complain = complain_overflow_bitfield; | |
15869 | else if (howto->rightshift == 0 | |
15870 | ? ((insn & (0x3f << 26)) == 28u << 26 /* andi */ | |
15871 | || (insn & (0x3f << 26)) == 24u << 26 /* ori */ | |
15872 | || (insn & (0x3f << 26)) == 26u << 26 /* xori */) | |
15873 | : ((insn & (0x3f << 26)) == 29u << 26 /* andis */ | |
15874 | || (insn & (0x3f << 26)) == 25u << 26 /* oris */ | |
15875 | || (insn & (0x3f << 26)) == 27u << 26 /* xoris */)) | |
b80eed39 AM |
15876 | complain = complain_overflow_unsigned; |
15877 | if (howto->complain_on_overflow != complain) | |
15878 | { | |
15879 | alt_howto = *howto; | |
15880 | alt_howto.complain_on_overflow = complain; | |
15881 | howto = &alt_howto; | |
15882 | } | |
15883 | } | |
15884 | ||
a680de9a PB |
15885 | if (r_type == R_PPC64_REL16DX_HA) |
15886 | { | |
15887 | /* Split field reloc isn't handled by _bfd_final_link_relocate. */ | |
15888 | if (rel->r_offset + 4 > input_section->size) | |
15889 | r = bfd_reloc_outofrange; | |
15890 | else | |
15891 | { | |
15892 | relocation += addend; | |
15893 | relocation -= (rel->r_offset | |
15894 | + input_section->output_offset | |
15895 | + input_section->output_section->vma); | |
3de43e7b | 15896 | relocation = (bfd_signed_vma) relocation >> 16; |
a680de9a PB |
15897 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); |
15898 | insn &= ~0x1fffc1; | |
3de43e7b | 15899 | insn |= (relocation & 0xffc1) | ((relocation & 0x3e) << 15); |
a680de9a PB |
15900 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
15901 | r = bfd_reloc_ok; | |
3de43e7b | 15902 | if (relocation + 0x8000 > 0xffff) |
a680de9a PB |
15903 | r = bfd_reloc_overflow; |
15904 | } | |
15905 | } | |
15906 | else | |
15907 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, contents, | |
15908 | rel->r_offset, relocation, addend); | |
5bd4f169 | 15909 | |
ef60b7ff | 15910 | if (r != bfd_reloc_ok) |
5bd4f169 | 15911 | { |
bc30df16 | 15912 | char *more_info = NULL; |
b80eed39 | 15913 | const char *reloc_name = howto->name; |
bc30df16 AM |
15914 | |
15915 | if (reloc_dest != DEST_NORMAL) | |
15916 | { | |
15917 | more_info = bfd_malloc (strlen (reloc_name) + 8); | |
15918 | if (more_info != NULL) | |
15919 | { | |
15920 | strcpy (more_info, reloc_name); | |
15921 | strcat (more_info, (reloc_dest == DEST_OPD | |
15922 | ? " (OPD)" : " (stub)")); | |
15923 | reloc_name = more_info; | |
15924 | } | |
15925 | } | |
15926 | ||
cd27b276 | 15927 | if (r == bfd_reloc_overflow) |
5bd4f169 | 15928 | { |
8131c122 AM |
15929 | /* On code like "if (foo) foo();" don't report overflow |
15930 | on a branch to zero when foo is undefined. */ | |
15931 | if (!warned | |
15932 | && (reloc_dest == DEST_STUB | |
15933 | || !(h != NULL | |
15934 | && (h->elf.root.type == bfd_link_hash_undefweak | |
15935 | || h->elf.root.type == bfd_link_hash_undefined) | |
15936 | && is_branch_reloc (r_type)))) | |
1a72702b AM |
15937 | info->callbacks->reloc_overflow (info, &h->elf.root, |
15938 | sym_name, reloc_name, | |
15939 | orig_rel.r_addend, | |
15940 | input_bfd, input_section, | |
15941 | rel->r_offset); | |
ef60b7ff AM |
15942 | } |
15943 | else | |
15944 | { | |
25f53a85 | 15945 | info->callbacks->einfo |
695344c0 | 15946 | /* xgettext:c-format */ |
c1c8c1ef | 15947 | (_("%H: %s against `%pT': error %d\n"), |
25f53a85 | 15948 | input_bfd, input_section, rel->r_offset, |
bc30df16 | 15949 | reloc_name, sym_name, (int) r); |
b34976b6 | 15950 | ret = FALSE; |
ef60b7ff | 15951 | } |
bc30df16 AM |
15952 | if (more_info != NULL) |
15953 | free (more_info); | |
5bd4f169 | 15954 | } |
c316a17c AM |
15955 | copy_reloc: |
15956 | if (wrel != rel) | |
15957 | *wrel = *rel; | |
15958 | } | |
15959 | ||
15960 | if (wrel != rel) | |
15961 | { | |
15962 | Elf_Internal_Shdr *rel_hdr; | |
15963 | size_t deleted = rel - wrel; | |
15964 | ||
15965 | rel_hdr = _bfd_elf_single_rel_hdr (input_section->output_section); | |
15966 | rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted; | |
15967 | if (rel_hdr->sh_size == 0) | |
15968 | { | |
15969 | /* It is too late to remove an empty reloc section. Leave | |
15970 | one NONE reloc. | |
15971 | ??? What is wrong with an empty section??? */ | |
15972 | rel_hdr->sh_size = rel_hdr->sh_entsize; | |
15973 | deleted -= 1; | |
15974 | } | |
15975 | rel_hdr = _bfd_elf_single_rel_hdr (input_section); | |
15976 | rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted; | |
15977 | input_section->reloc_count -= deleted; | |
5bd4f169 AM |
15978 | } |
15979 | ||
645ea6a9 AM |
15980 | /* If we're emitting relocations, then shortly after this function |
15981 | returns, reloc offsets and addends for this section will be | |
15982 | adjusted. Worse, reloc symbol indices will be for the output | |
8860955f AM |
15983 | file rather than the input. Save a copy of the relocs for |
15984 | opd_entry_value. */ | |
0e1862bb | 15985 | if (is_opd && (info->emitrelocations || bfd_link_relocatable (info))) |
8860955f AM |
15986 | { |
15987 | bfd_size_type amt; | |
15988 | amt = input_section->reloc_count * sizeof (Elf_Internal_Rela); | |
15989 | rel = bfd_alloc (input_bfd, amt); | |
729eabd5 AM |
15990 | BFD_ASSERT (ppc64_elf_tdata (input_bfd)->opd.relocs == NULL); |
15991 | ppc64_elf_tdata (input_bfd)->opd.relocs = rel; | |
8860955f AM |
15992 | if (rel == NULL) |
15993 | return FALSE; | |
15994 | memcpy (rel, relocs, amt); | |
15995 | } | |
5bd4f169 AM |
15996 | return ret; |
15997 | } | |
15998 | ||
754021d0 AM |
15999 | /* Adjust the value of any local symbols in opd sections. */ |
16000 | ||
6e0b88f1 | 16001 | static int |
754021d0 AM |
16002 | ppc64_elf_output_symbol_hook (struct bfd_link_info *info, |
16003 | const char *name ATTRIBUTE_UNUSED, | |
16004 | Elf_Internal_Sym *elfsym, | |
16005 | asection *input_sec, | |
16006 | struct elf_link_hash_entry *h) | |
16007 | { | |
74f0fb50 AM |
16008 | struct _opd_sec_data *opd; |
16009 | long adjust; | |
754021d0 AM |
16010 | bfd_vma value; |
16011 | ||
4025353c | 16012 | if (h != NULL) |
6e0b88f1 | 16013 | return 1; |
4025353c | 16014 | |
74f0fb50 AM |
16015 | opd = get_opd_info (input_sec); |
16016 | if (opd == NULL || opd->adjust == NULL) | |
6e0b88f1 | 16017 | return 1; |
754021d0 AM |
16018 | |
16019 | value = elfsym->st_value - input_sec->output_offset; | |
0e1862bb | 16020 | if (!bfd_link_relocatable (info)) |
754021d0 AM |
16021 | value -= input_sec->output_section->vma; |
16022 | ||
51aecdc5 | 16023 | adjust = opd->adjust[OPD_NDX (value)]; |
4025353c | 16024 | if (adjust == -1) |
6e0b88f1 AM |
16025 | return 2; |
16026 | ||
16027 | elfsym->st_value += adjust; | |
16028 | return 1; | |
754021d0 AM |
16029 | } |
16030 | ||
5bd4f169 AM |
16031 | /* Finish up dynamic symbol handling. We set the contents of various |
16032 | dynamic sections here. */ | |
16033 | ||
b34976b6 | 16034 | static bfd_boolean |
4ce794b7 AM |
16035 | ppc64_elf_finish_dynamic_symbol (bfd *output_bfd, |
16036 | struct bfd_link_info *info, | |
16037 | struct elf_link_hash_entry *h, | |
4aef7643 | 16038 | Elf_Internal_Sym *sym) |
5bd4f169 | 16039 | { |
65f38f15 | 16040 | struct ppc_link_hash_table *htab; |
8387904d | 16041 | struct plt_entry *ent; |
5bd4f169 | 16042 | |
65f38f15 | 16043 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
16044 | if (htab == NULL) |
16045 | return FALSE; | |
5bd4f169 | 16046 | |
49c09209 AM |
16047 | if (!htab->opd_abi && !h->def_regular) |
16048 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) | |
16049 | if (ent->plt.offset != (bfd_vma) -1) | |
16050 | { | |
16051 | /* Mark the symbol as undefined, rather than as | |
16052 | defined in glink. Leave the value if there were | |
16053 | any relocations where pointer equality matters | |
16054 | (this is a clue for the dynamic linker, to make | |
16055 | function pointer comparisons work between an | |
16056 | application and shared library), otherwise set it | |
16057 | to zero. */ | |
16058 | sym->st_shndx = SHN_UNDEF; | |
16059 | if (!h->pointer_equality_needed) | |
16060 | sym->st_value = 0; | |
16061 | else if (!h->ref_regular_nonweak) | |
16062 | { | |
16063 | /* This breaks function pointer comparisons, but | |
16064 | that is better than breaking tests for a NULL | |
16065 | function pointer. */ | |
16066 | sym->st_value = 0; | |
16067 | } | |
16068 | break; | |
16069 | } | |
5bd4f169 | 16070 | |
f5385ebf | 16071 | if (h->needs_copy) |
5bd4f169 | 16072 | { |
65f38f15 | 16073 | /* This symbol needs a copy reloc. Set it up. */ |
49c09209 | 16074 | Elf_Internal_Rela rela; |
5474d94f | 16075 | asection *srel; |
49c09209 | 16076 | bfd_byte *loc; |
5bd4f169 | 16077 | |
65f38f15 AM |
16078 | if (h->dynindx == -1 |
16079 | || (h->root.type != bfd_link_hash_defined | |
16080 | && h->root.type != bfd_link_hash_defweak) | |
5474d94f AM |
16081 | || htab->elf.srelbss == NULL |
16082 | || htab->elf.sreldynrelro == NULL) | |
65f38f15 | 16083 | abort (); |
5bd4f169 AM |
16084 | |
16085 | rela.r_offset = (h->root.u.def.value | |
16086 | + h->root.u.def.section->output_section->vma | |
16087 | + h->root.u.def.section->output_offset); | |
16088 | rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY); | |
16089 | rela.r_addend = 0; | |
afbf7e8e | 16090 | if (h->root.u.def.section == htab->elf.sdynrelro) |
5474d94f AM |
16091 | srel = htab->elf.sreldynrelro; |
16092 | else | |
16093 | srel = htab->elf.srelbss; | |
16094 | loc = srel->contents; | |
16095 | loc += srel->reloc_count++ * sizeof (Elf64_External_Rela); | |
65f38f15 | 16096 | bfd_elf64_swap_reloca_out (output_bfd, &rela, loc); |
5bd4f169 AM |
16097 | } |
16098 | ||
b34976b6 | 16099 | return TRUE; |
5bd4f169 AM |
16100 | } |
16101 | ||
65f38f15 AM |
16102 | /* Used to decide how to sort relocs in an optimal manner for the |
16103 | dynamic linker, before writing them out. */ | |
16104 | ||
16105 | static enum elf_reloc_type_class | |
7e612e98 AM |
16106 | ppc64_elf_reloc_type_class (const struct bfd_link_info *info, |
16107 | const asection *rel_sec, | |
16108 | const Elf_Internal_Rela *rela) | |
65f38f15 | 16109 | { |
04c9666a | 16110 | enum elf_ppc64_reloc_type r_type; |
7e612e98 AM |
16111 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
16112 | ||
33e44f2e | 16113 | if (rel_sec == htab->elf.irelplt) |
7e612e98 | 16114 | return reloc_class_ifunc; |
a33d1f77 | 16115 | |
4ce794b7 | 16116 | r_type = ELF64_R_TYPE (rela->r_info); |
a33d1f77 | 16117 | switch (r_type) |
65f38f15 AM |
16118 | { |
16119 | case R_PPC64_RELATIVE: | |
16120 | return reloc_class_relative; | |
16121 | case R_PPC64_JMP_SLOT: | |
16122 | return reloc_class_plt; | |
16123 | case R_PPC64_COPY: | |
16124 | return reloc_class_copy; | |
16125 | default: | |
16126 | return reloc_class_normal; | |
16127 | } | |
16128 | } | |
16129 | ||
5bd4f169 AM |
16130 | /* Finish up the dynamic sections. */ |
16131 | ||
b34976b6 | 16132 | static bfd_boolean |
4ce794b7 AM |
16133 | ppc64_elf_finish_dynamic_sections (bfd *output_bfd, |
16134 | struct bfd_link_info *info) | |
5bd4f169 | 16135 | { |
65f38f15 AM |
16136 | struct ppc_link_hash_table *htab; |
16137 | bfd *dynobj; | |
5bd4f169 | 16138 | asection *sdyn; |
5bd4f169 | 16139 | |
65f38f15 | 16140 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
16141 | if (htab == NULL) |
16142 | return FALSE; | |
16143 | ||
65f38f15 | 16144 | dynobj = htab->elf.dynobj; |
3d4d4302 | 16145 | sdyn = bfd_get_linker_section (dynobj, ".dynamic"); |
5bd4f169 | 16146 | |
65f38f15 | 16147 | if (htab->elf.dynamic_sections_created) |
5bd4f169 | 16148 | { |
5bd4f169 AM |
16149 | Elf64_External_Dyn *dyncon, *dynconend; |
16150 | ||
33e44f2e | 16151 | if (sdyn == NULL || htab->elf.sgot == NULL) |
65f38f15 | 16152 | abort (); |
5bd4f169 AM |
16153 | |
16154 | dyncon = (Elf64_External_Dyn *) sdyn->contents; | |
eea6121a | 16155 | dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size); |
5bd4f169 AM |
16156 | for (; dyncon < dynconend; dyncon++) |
16157 | { | |
16158 | Elf_Internal_Dyn dyn; | |
19397422 | 16159 | asection *s; |
5bd4f169 AM |
16160 | |
16161 | bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn); | |
16162 | ||
16163 | switch (dyn.d_tag) | |
16164 | { | |
65f38f15 AM |
16165 | default: |
16166 | continue; | |
5bd4f169 | 16167 | |
5d1634d7 | 16168 | case DT_PPC64_GLINK: |
4ce794b7 | 16169 | s = htab->glink; |
6348e046 | 16170 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
ad8e1ba5 AM |
16171 | /* We stupidly defined DT_PPC64_GLINK to be the start |
16172 | of glink rather than the first entry point, which is | |
16173 | what ld.so needs, and now have a bigger stub to | |
16174 | support automatic multiple TOCs. */ | |
9e390558 | 16175 | dyn.d_un.d_ptr += GLINK_PLTRESOLVE_SIZE (htab) - 8 * 4; |
5d1634d7 AM |
16176 | break; |
16177 | ||
19397422 AM |
16178 | case DT_PPC64_OPD: |
16179 | s = bfd_get_section_by_name (output_bfd, ".opd"); | |
6348e046 AM |
16180 | if (s == NULL) |
16181 | continue; | |
16182 | dyn.d_un.d_ptr = s->vma; | |
19397422 AM |
16183 | break; |
16184 | ||
e8910a83 AM |
16185 | case DT_PPC64_OPT: |
16186 | if (htab->do_multi_toc && htab->multi_toc_needed) | |
16187 | dyn.d_un.d_val |= PPC64_OPT_MULTI_TOC; | |
f378ab09 AM |
16188 | if (htab->has_plt_localentry0) |
16189 | dyn.d_un.d_val |= PPC64_OPT_LOCALENTRY; | |
e8910a83 AM |
16190 | break; |
16191 | ||
19397422 AM |
16192 | case DT_PPC64_OPDSZ: |
16193 | s = bfd_get_section_by_name (output_bfd, ".opd"); | |
6348e046 AM |
16194 | if (s == NULL) |
16195 | continue; | |
eea6121a | 16196 | dyn.d_un.d_val = s->size; |
19397422 AM |
16197 | break; |
16198 | ||
65f38f15 | 16199 | case DT_PLTGOT: |
33e44f2e | 16200 | s = htab->elf.splt; |
6348e046 | 16201 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
65f38f15 AM |
16202 | break; |
16203 | ||
16204 | case DT_JMPREL: | |
33e44f2e | 16205 | s = htab->elf.srelplt; |
6348e046 | 16206 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
65f38f15 | 16207 | break; |
5bd4f169 | 16208 | |
65f38f15 | 16209 | case DT_PLTRELSZ: |
33e44f2e | 16210 | dyn.d_un.d_val = htab->elf.srelplt->size; |
5d1634d7 | 16211 | break; |
82e66161 AM |
16212 | |
16213 | case DT_TEXTREL: | |
16214 | if (htab->local_ifunc_resolver) | |
16215 | info->callbacks->einfo | |
16216 | (_("%X%P: text relocations and GNU indirect " | |
16217 | "functions will result in a segfault at runtime\n")); | |
16218 | else if (htab->maybe_local_ifunc_resolver) | |
16219 | info->callbacks->einfo | |
16220 | (_("%P: warning: text relocations and GNU indirect " | |
16221 | "functions may result in a segfault at runtime\n")); | |
16222 | continue; | |
5bd4f169 | 16223 | } |
5bd4f169 | 16224 | |
65f38f15 | 16225 | bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); |
5bd4f169 | 16226 | } |
5bd4f169 AM |
16227 | } |
16228 | ||
6528b6eb AM |
16229 | if (htab->elf.sgot != NULL && htab->elf.sgot->size != 0 |
16230 | && htab->elf.sgot->output_section != bfd_abs_section_ptr) | |
5d1634d7 AM |
16231 | { |
16232 | /* Fill in the first entry in the global offset table. | |
16233 | We use it to hold the link-time TOCbase. */ | |
16234 | bfd_put_64 (output_bfd, | |
60ee0d4a | 16235 | elf_gp (output_bfd) + TOC_BASE_OFF, |
33e44f2e | 16236 | htab->elf.sgot->contents); |
5d1634d7 AM |
16237 | |
16238 | /* Set .got entry size. */ | |
33e44f2e | 16239 | elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize = 8; |
5d1634d7 AM |
16240 | } |
16241 | ||
6528b6eb AM |
16242 | if (htab->elf.splt != NULL && htab->elf.splt->size != 0 |
16243 | && htab->elf.splt->output_section != bfd_abs_section_ptr) | |
5d1634d7 AM |
16244 | { |
16245 | /* Set .plt entry size. */ | |
33e44f2e | 16246 | elf_section_data (htab->elf.splt->output_section)->this_hdr.sh_entsize |
b9e5796b | 16247 | = PLT_ENTRY_SIZE (htab); |
5d1634d7 AM |
16248 | } |
16249 | ||
84f5d08e AM |
16250 | /* brlt is SEC_LINKER_CREATED, so we need to write out relocs for |
16251 | brlt ourselves if emitrelocations. */ | |
16252 | if (htab->brlt != NULL | |
16253 | && htab->brlt->reloc_count != 0 | |
16254 | && !_bfd_elf_link_output_relocs (output_bfd, | |
16255 | htab->brlt, | |
d4730f92 | 16256 | elf_section_data (htab->brlt)->rela.hdr, |
84f5d08e AM |
16257 | elf_section_data (htab->brlt)->relocs, |
16258 | NULL)) | |
16259 | return FALSE; | |
16260 | ||
176a0d42 AM |
16261 | if (htab->glink != NULL |
16262 | && htab->glink->reloc_count != 0 | |
16263 | && !_bfd_elf_link_output_relocs (output_bfd, | |
16264 | htab->glink, | |
d4730f92 | 16265 | elf_section_data (htab->glink)->rela.hdr, |
176a0d42 AM |
16266 | elf_section_data (htab->glink)->relocs, |
16267 | NULL)) | |
16268 | return FALSE; | |
16269 | ||
58d180e8 | 16270 | if (htab->glink_eh_frame != NULL |
da44f4e5 AM |
16271 | && htab->glink_eh_frame->size != 0) |
16272 | { | |
16273 | bfd_vma val; | |
16274 | bfd_byte *p; | |
d4aaa2a0 | 16275 | struct map_stub *group; |
2e0ce1c8 | 16276 | size_t align = 4; |
da44f4e5 | 16277 | |
2e0ce1c8 AM |
16278 | p = htab->glink_eh_frame->contents; |
16279 | p += (sizeof (glink_eh_frame_cie) + align - 1) & -align; | |
d4aaa2a0 AM |
16280 | |
16281 | for (group = htab->group; group != NULL; group = group->next) | |
16282 | if (group->stub_sec != NULL) | |
da44f4e5 | 16283 | { |
da44f4e5 | 16284 | /* Offset to stub section. */ |
d4aaa2a0 AM |
16285 | val = (group->stub_sec->output_section->vma |
16286 | + group->stub_sec->output_offset); | |
da44f4e5 AM |
16287 | val -= (htab->glink_eh_frame->output_section->vma |
16288 | + htab->glink_eh_frame->output_offset | |
d4aaa2a0 | 16289 | + (p + 8 - htab->glink_eh_frame->contents)); |
da44f4e5 AM |
16290 | if (val + 0x80000000 > 0xffffffff) |
16291 | { | |
cf97bcb0 AM |
16292 | _bfd_error_handler |
16293 | (_("%s offset too large for .eh_frame sdata4 encoding"), | |
d4aaa2a0 | 16294 | group->stub_sec->name); |
da44f4e5 AM |
16295 | return FALSE; |
16296 | } | |
d4aaa2a0 AM |
16297 | bfd_put_32 (dynobj, val, p + 8); |
16298 | p += stub_eh_frame_size (group, align); | |
da44f4e5 AM |
16299 | } |
16300 | if (htab->glink != NULL && htab->glink->size != 0) | |
16301 | { | |
da44f4e5 AM |
16302 | /* Offset to .glink. */ |
16303 | val = (htab->glink->output_section->vma | |
16304 | + htab->glink->output_offset | |
16305 | + 8); | |
16306 | val -= (htab->glink_eh_frame->output_section->vma | |
16307 | + htab->glink_eh_frame->output_offset | |
d4aaa2a0 | 16308 | + (p + 8 - htab->glink_eh_frame->contents)); |
da44f4e5 AM |
16309 | if (val + 0x80000000 > 0xffffffff) |
16310 | { | |
cf97bcb0 AM |
16311 | _bfd_error_handler |
16312 | (_("%s offset too large for .eh_frame sdata4 encoding"), | |
da44f4e5 AM |
16313 | htab->glink->name); |
16314 | return FALSE; | |
16315 | } | |
d4aaa2a0 AM |
16316 | bfd_put_32 (dynobj, val, p + 8); |
16317 | p += (24 + align - 1) & -align; | |
da44f4e5 AM |
16318 | } |
16319 | ||
16320 | if (htab->glink_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME | |
16321 | && !_bfd_elf_write_section_eh_frame (output_bfd, info, | |
16322 | htab->glink_eh_frame, | |
16323 | htab->glink_eh_frame->contents)) | |
16324 | return FALSE; | |
16325 | } | |
58d180e8 | 16326 | |
e717da7e | 16327 | /* We need to handle writing out multiple GOT sections ourselves, |
7b53ace3 AM |
16328 | since we didn't add them to DYNOBJ. We know dynobj is the first |
16329 | bfd. */ | |
c72f2fb2 | 16330 | while ((dynobj = dynobj->link.next) != NULL) |
e717da7e AM |
16331 | { |
16332 | asection *s; | |
7b53ace3 | 16333 | |
0c8d6e5c | 16334 | if (!is_ppc64_elf (dynobj)) |
7b53ace3 AM |
16335 | continue; |
16336 | ||
e717da7e AM |
16337 | s = ppc64_elf_tdata (dynobj)->got; |
16338 | if (s != NULL | |
eea6121a | 16339 | && s->size != 0 |
e717da7e AM |
16340 | && s->output_section != bfd_abs_section_ptr |
16341 | && !bfd_set_section_contents (output_bfd, s->output_section, | |
16342 | s->contents, s->output_offset, | |
eea6121a | 16343 | s->size)) |
e717da7e AM |
16344 | return FALSE; |
16345 | s = ppc64_elf_tdata (dynobj)->relgot; | |
16346 | if (s != NULL | |
eea6121a | 16347 | && s->size != 0 |
e717da7e AM |
16348 | && s->output_section != bfd_abs_section_ptr |
16349 | && !bfd_set_section_contents (output_bfd, s->output_section, | |
16350 | s->contents, s->output_offset, | |
eea6121a | 16351 | s->size)) |
e717da7e AM |
16352 | return FALSE; |
16353 | } | |
f6c52c13 | 16354 | |
b34976b6 | 16355 | return TRUE; |
5bd4f169 AM |
16356 | } |
16357 | ||
5bd4f169 | 16358 | #include "elf64-target.h" |
7b8e7dad AM |
16359 | |
16360 | /* FreeBSD support */ | |
16361 | ||
16362 | #undef TARGET_LITTLE_SYM | |
16363 | #undef TARGET_LITTLE_NAME | |
16364 | ||
16365 | #undef TARGET_BIG_SYM | |
6d00b590 | 16366 | #define TARGET_BIG_SYM powerpc_elf64_fbsd_vec |
7b8e7dad AM |
16367 | #undef TARGET_BIG_NAME |
16368 | #define TARGET_BIG_NAME "elf64-powerpc-freebsd" | |
16369 | ||
16370 | #undef ELF_OSABI | |
16371 | #define ELF_OSABI ELFOSABI_FREEBSD | |
16372 | ||
16373 | #undef elf64_bed | |
16374 | #define elf64_bed elf64_powerpc_fbsd_bed | |
16375 | ||
16376 | #include "elf64-target.h" |