Commit | Line | Data |
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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 | |
04c6a44c | 67 | #define ELF_COMMONPAGESIZE 0x10000 |
ad8e1ba5 AM |
68 | #define elf_info_to_howto ppc64_elf_info_to_howto |
69 | ||
70 | #define elf_backend_want_got_sym 0 | |
71 | #define elf_backend_want_plt_sym 0 | |
72 | #define elf_backend_plt_alignment 3 | |
73 | #define elf_backend_plt_not_loaded 1 | |
ad8e1ba5 | 74 | #define elf_backend_got_header_size 8 |
5474d94f | 75 | #define elf_backend_want_dynrelro 1 |
ad8e1ba5 AM |
76 | #define elf_backend_can_gc_sections 1 |
77 | #define elf_backend_can_refcount 1 | |
78 | #define elf_backend_rela_normal 1 | |
64f52338 | 79 | #define elf_backend_dtrel_excludes_plt 1 |
6bfdb61b | 80 | #define elf_backend_default_execstack 0 |
ad8e1ba5 | 81 | |
e717da7e | 82 | #define bfd_elf64_mkobject ppc64_elf_mkobject |
ad8e1ba5 | 83 | #define bfd_elf64_bfd_reloc_type_lookup ppc64_elf_reloc_type_lookup |
aa374f67 | 84 | #define bfd_elf64_bfd_reloc_name_lookup ppc64_elf_reloc_name_lookup |
ee67d69a AM |
85 | #define bfd_elf64_bfd_merge_private_bfd_data ppc64_elf_merge_private_bfd_data |
86 | #define bfd_elf64_bfd_print_private_bfd_data ppc64_elf_print_private_bfd_data | |
ad8e1ba5 AM |
87 | #define bfd_elf64_new_section_hook ppc64_elf_new_section_hook |
88 | #define bfd_elf64_bfd_link_hash_table_create ppc64_elf_link_hash_table_create | |
90e3cdf2 | 89 | #define bfd_elf64_get_synthetic_symtab ppc64_elf_get_synthetic_symtab |
aa374f67 | 90 | #define bfd_elf64_bfd_link_just_syms ppc64_elf_link_just_syms |
8c5b4e52 | 91 | #define bfd_elf64_bfd_gc_sections ppc64_elf_gc_sections |
ad8e1ba5 AM |
92 | |
93 | #define elf_backend_object_p ppc64_elf_object_p | |
d37c89e5 AM |
94 | #define elf_backend_grok_prstatus ppc64_elf_grok_prstatus |
95 | #define elf_backend_grok_psinfo ppc64_elf_grok_psinfo | |
183e98be | 96 | #define elf_backend_write_core_note ppc64_elf_write_core_note |
9d19e4fd | 97 | #define elf_backend_create_dynamic_sections _bfd_elf_create_dynamic_sections |
ad8e1ba5 | 98 | #define elf_backend_copy_indirect_symbol ppc64_elf_copy_indirect_symbol |
555cd476 | 99 | #define elf_backend_add_symbol_hook ppc64_elf_add_symbol_hook |
f6c7c3e8 | 100 | #define elf_backend_check_directives ppc64_elf_before_check_relocs |
e5034e59 | 101 | #define elf_backend_notice_as_needed ppc64_elf_notice_as_needed |
8387904d | 102 | #define elf_backend_archive_symbol_lookup ppc64_elf_archive_symbol_lookup |
ad8e1ba5 | 103 | #define elf_backend_check_relocs ppc64_elf_check_relocs |
c0e331c7 | 104 | #define elf_backend_relocs_compatible _bfd_elf_relocs_compatible |
74f0fb50 | 105 | #define elf_backend_gc_keep ppc64_elf_gc_keep |
64d03ab5 | 106 | #define elf_backend_gc_mark_dynamic_ref ppc64_elf_gc_mark_dynamic_ref |
ad8e1ba5 | 107 | #define elf_backend_gc_mark_hook ppc64_elf_gc_mark_hook |
ad8e1ba5 AM |
108 | #define elf_backend_adjust_dynamic_symbol ppc64_elf_adjust_dynamic_symbol |
109 | #define elf_backend_hide_symbol ppc64_elf_hide_symbol | |
9f296da3 | 110 | #define elf_backend_maybe_function_sym ppc64_elf_maybe_function_sym |
ad8e1ba5 AM |
111 | #define elf_backend_always_size_sections ppc64_elf_func_desc_adjust |
112 | #define elf_backend_size_dynamic_sections ppc64_elf_size_dynamic_sections | |
a345bc8d | 113 | #define elf_backend_hash_symbol ppc64_elf_hash_symbol |
74541ad4 | 114 | #define elf_backend_init_index_section _bfd_elf_init_2_index_sections |
60124e18 | 115 | #define elf_backend_action_discarded ppc64_elf_action_discarded |
ad8e1ba5 AM |
116 | #define elf_backend_relocate_section ppc64_elf_relocate_section |
117 | #define elf_backend_finish_dynamic_symbol ppc64_elf_finish_dynamic_symbol | |
118 | #define elf_backend_reloc_type_class ppc64_elf_reloc_type_class | |
119 | #define elf_backend_finish_dynamic_sections ppc64_elf_finish_dynamic_sections | |
754021d0 | 120 | #define elf_backend_link_output_symbol_hook ppc64_elf_output_symbol_hook |
29ef7005 | 121 | #define elf_backend_special_sections ppc64_elf_special_sections |
6911b7dc | 122 | #define elf_backend_merge_symbol_attribute ppc64_elf_merge_symbol_attribute |
8c5b4e52 | 123 | #define elf_backend_merge_symbol ppc64_elf_merge_symbol |
bce964aa | 124 | #define elf_backend_get_reloc_section bfd_get_section_by_name |
ad8e1ba5 | 125 | |
5bd4f169 AM |
126 | /* The name of the dynamic interpreter. This is put in the .interp |
127 | section. */ | |
128 | #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1" | |
129 | ||
130 | /* The size in bytes of an entry in the procedure linkage table. */ | |
b9e5796b | 131 | #define PLT_ENTRY_SIZE(htab) (htab->opd_abi ? 24 : 8) |
5bd4f169 AM |
132 | |
133 | /* The initial size of the plt reserved for the dynamic linker. */ | |
b9e5796b | 134 | #define PLT_INITIAL_ENTRY_SIZE(htab) (htab->opd_abi ? 24 : 16) |
5bd4f169 | 135 | |
a078d95a AM |
136 | /* Offsets to some stack save slots. */ |
137 | #define STK_LR 16 | |
138 | #define STK_TOC(htab) (htab->opd_abi ? 40 : 24) | |
eb8d7fda | 139 | /* This one is dodgy. ELFv2 does not have a linker word, so use the |
a078d95a AM |
140 | CR save slot. Used only by optimised __tls_get_addr call stub, |
141 | relying on __tls_get_addr_opt not saving CR.. */ | |
142 | #define STK_LINKER(htab) (htab->opd_abi ? 32 : 8) | |
143 | ||
5bd4f169 | 144 | /* TOC base pointers offset from start of TOC. */ |
411e1bfb | 145 | #define TOC_BASE_OFF 0x8000 |
a27e685f AM |
146 | /* TOC base alignment. */ |
147 | #define TOC_BASE_ALIGN 256 | |
411e1bfb AM |
148 | |
149 | /* Offset of tp and dtp pointers from start of TLS block. */ | |
150 | #define TP_OFFSET 0x7000 | |
151 | #define DTP_OFFSET 0x8000 | |
5bd4f169 | 152 | |
ad8e1ba5 AM |
153 | /* .plt call stub instructions. The normal stub is like this, but |
154 | sometimes the .plt entry crosses a 64k boundary and we need to | |
71a39c98 | 155 | insert an addi to adjust r11. */ |
a078d95a | 156 | #define STD_R2_0R1 0xf8410000 /* std %r2,0+40(%r1) */ |
71a39c98 AM |
157 | #define ADDIS_R11_R2 0x3d620000 /* addis %r11,%r2,xxx@ha */ |
158 | #define LD_R12_0R11 0xe98b0000 /* ld %r12,xxx+0@l(%r11) */ | |
159 | #define MTCTR_R12 0x7d8903a6 /* mtctr %r12 */ | |
160 | #define LD_R2_0R11 0xe84b0000 /* ld %r2,xxx+8@l(%r11) */ | |
161 | #define LD_R11_0R11 0xe96b0000 /* ld %r11,xxx+16@l(%r11) */ | |
5d1634d7 AM |
162 | #define BCTR 0x4e800420 /* bctr */ |
163 | ||
07d6d2b8 AM |
164 | #define ADDI_R11_R11 0x396b0000 /* addi %r11,%r11,off@l */ |
165 | #define ADDIS_R2_R2 0x3c420000 /* addis %r2,%r2,off@ha */ | |
166 | #define ADDI_R2_R2 0x38420000 /* addi %r2,%r2,off@l */ | |
167 | ||
168 | #define XOR_R2_R12_R12 0x7d826278 /* xor %r2,%r12,%r12 */ | |
169 | #define ADD_R11_R11_R2 0x7d6b1214 /* add %r11,%r11,%r2 */ | |
170 | #define XOR_R11_R12_R12 0x7d8b6278 /* xor %r11,%r12,%r12 */ | |
171 | #define ADD_R2_R2_R11 0x7c425a14 /* add %r2,%r2,%r11 */ | |
172 | #define CMPLDI_R2_0 0x28220000 /* cmpldi %r2,0 */ | |
173 | #define BNECTR 0x4ca20420 /* bnectr+ */ | |
174 | #define BNECTR_P4 0x4ce20420 /* bnectr+ */ | |
794e51c0 | 175 | |
71a39c98 | 176 | #define LD_R12_0R2 0xe9820000 /* ld %r12,xxx+0(%r2) */ |
ac2df442 | 177 | #define LD_R11_0R2 0xe9620000 /* ld %r11,xxx+0(%r2) */ |
07d6d2b8 | 178 | #define LD_R2_0R2 0xe8420000 /* ld %r2,xxx+0(%r2) */ |
ac2df442 | 179 | |
07d6d2b8 AM |
180 | #define LD_R2_0R1 0xe8410000 /* ld %r2,0(%r1) */ |
181 | #define LD_R2_0R12 0xe84c0000 /* ld %r2,0(%r12) */ | |
182 | #define ADD_R2_R2_R12 0x7c426214 /* add %r2,%r2,%r12 */ | |
ad8e1ba5 | 183 | |
07d6d2b8 | 184 | #define LIS_R2 0x3c400000 /* lis %r2,xxx@ha */ |
006589cf AM |
185 | #define ADDIS_R2_R12 0x3c4c0000 /* addis %r2,%r12,xxx@ha */ |
186 | #define ADDIS_R12_R2 0x3d820000 /* addis %r12,%r2,xxx@ha */ | |
a345bc8d | 187 | #define ADDIS_R12_R12 0x3d8c0000 /* addis %r12,%r12,xxx@ha */ |
07d6d2b8 | 188 | #define LD_R12_0R12 0xe98c0000 /* ld %r12,xxx@l(%r12) */ |
a345bc8d | 189 | |
9e390558 AM |
190 | /* __glink_PLTresolve stub instructions. We enter with the index in R0. */ |
191 | #define GLINK_PLTRESOLVE_SIZE(htab) \ | |
407aa07c | 192 | (8u + (htab->opd_abi ? 11 * 4 : 14 * 4)) |
ee4bf8d2 AM |
193 | /* 0: */ |
194 | /* .quad plt0-1f */ | |
195 | /* __glink: */ | |
196 | #define MFLR_R12 0x7d8802a6 /* mflr %12 */ | |
197 | #define BCL_20_31 0x429f0005 /* bcl 20,31,1f */ | |
198 | /* 1: */ | |
199 | #define MFLR_R11 0x7d6802a6 /* mflr %11 */ | |
71a39c98 | 200 | /* ld %2,(0b-1b)(%11) */ |
ee4bf8d2 | 201 | #define MTLR_R12 0x7d8803a6 /* mtlr %12 */ |
71a39c98 AM |
202 | #define ADD_R11_R2_R11 0x7d625a14 /* add %11,%2,%11 */ |
203 | /* ld %12,0(%11) */ | |
204 | /* ld %2,8(%11) */ | |
205 | /* mtctr %12 */ | |
206 | /* ld %11,16(%11) */ | |
ee4bf8d2 | 207 | /* bctr */ |
b9e5796b AM |
208 | #define MFLR_R0 0x7c0802a6 /* mflr %r0 */ |
209 | #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */ | |
210 | #define SUB_R12_R12_R11 0x7d8b6050 /* subf %r12,%r11,%r12 */ | |
211 | #define ADDI_R0_R12 0x380c0000 /* addi %r0,%r12,0 */ | |
212 | #define SRDI_R0_R0_2 0x7800f082 /* rldicl %r0,%r0,62,2 */ | |
5d1634d7 AM |
213 | |
214 | /* Pad with this. */ | |
215 | #define NOP 0x60000000 | |
216 | ||
721956f4 AM |
217 | /* Some other nops. */ |
218 | #define CROR_151515 0x4def7b82 | |
219 | #define CROR_313131 0x4ffffb82 | |
220 | ||
cedb70c5 | 221 | /* .glink entries for the first 32k functions are two instructions. */ |
5d1634d7 AM |
222 | #define LI_R0_0 0x38000000 /* li %r0,0 */ |
223 | #define B_DOT 0x48000000 /* b . */ | |
224 | ||
225 | /* After that, we need two instructions to load the index, followed by | |
226 | a branch. */ | |
227 | #define LIS_R0_0 0x3c000000 /* lis %r0,0 */ | |
10ed1bba | 228 | #define ORI_R0_R0_0 0x60000000 /* ori %r0,%r0,0 */ |
41bd81ab | 229 | |
deb0e272 AM |
230 | /* Instructions used by the save and restore reg functions. */ |
231 | #define STD_R0_0R1 0xf8010000 /* std %r0,0(%r1) */ | |
232 | #define STD_R0_0R12 0xf80c0000 /* std %r0,0(%r12) */ | |
233 | #define LD_R0_0R1 0xe8010000 /* ld %r0,0(%r1) */ | |
234 | #define LD_R0_0R12 0xe80c0000 /* ld %r0,0(%r12) */ | |
82bd7b59 AM |
235 | #define STFD_FR0_0R1 0xd8010000 /* stfd %fr0,0(%r1) */ |
236 | #define LFD_FR0_0R1 0xc8010000 /* lfd %fr0,0(%r1) */ | |
deb0e272 AM |
237 | #define LI_R12_0 0x39800000 /* li %r12,0 */ |
238 | #define STVX_VR0_R12_R0 0x7c0c01ce /* stvx %v0,%r12,%r0 */ | |
239 | #define LVX_VR0_R12_R0 0x7c0c00ce /* lvx %v0,%r12,%r0 */ | |
240 | #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */ | |
82bd7b59 AM |
241 | #define BLR 0x4e800020 /* blr */ |
242 | ||
41bd81ab AM |
243 | /* Since .opd is an array of descriptors and each entry will end up |
244 | with identical R_PPC64_RELATIVE relocs, there is really no need to | |
245 | propagate .opd relocs; The dynamic linker should be taught to | |
1e2f5b6e | 246 | relocate .opd without reloc entries. */ |
41bd81ab AM |
247 | #ifndef NO_OPD_RELOCS |
248 | #define NO_OPD_RELOCS 0 | |
249 | #endif | |
810d4e75 | 250 | |
a4b6fadd AM |
251 | #ifndef ARRAY_SIZE |
252 | #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0])) | |
253 | #endif | |
254 | ||
810d4e75 AM |
255 | static inline int |
256 | abiversion (bfd *abfd) | |
257 | { | |
258 | return elf_elfheader (abfd)->e_flags & EF_PPC64_ABI; | |
259 | } | |
260 | ||
261 | static inline void | |
262 | set_abiversion (bfd *abfd, int ver) | |
263 | { | |
264 | elf_elfheader (abfd)->e_flags &= ~EF_PPC64_ABI; | |
265 | elf_elfheader (abfd)->e_flags |= ver & EF_PPC64_ABI; | |
266 | } | |
5bd4f169 | 267 | \f |
f5e87a1d | 268 | #define ONES(n) (((bfd_vma) 1 << ((n) - 1) << 1) - 1) |
b34976b6 | 269 | |
5bd4f169 | 270 | /* Relocation HOWTO's. */ |
04c9666a | 271 | static reloc_howto_type *ppc64_elf_howto_table[(int) R_PPC64_max]; |
5bd4f169 | 272 | |
f3185997 NC |
273 | static reloc_howto_type ppc64_elf_howto_raw[] = |
274 | { | |
5bd4f169 AM |
275 | /* This reloc does nothing. */ |
276 | HOWTO (R_PPC64_NONE, /* type */ | |
277 | 0, /* rightshift */ | |
6346d5ca AM |
278 | 3, /* size (0 = byte, 1 = short, 2 = long) */ |
279 | 0, /* bitsize */ | |
b34976b6 | 280 | FALSE, /* pc_relative */ |
5bd4f169 | 281 | 0, /* bitpos */ |
f5e87a1d | 282 | complain_overflow_dont, /* complain_on_overflow */ |
5bd4f169 AM |
283 | bfd_elf_generic_reloc, /* special_function */ |
284 | "R_PPC64_NONE", /* name */ | |
b34976b6 | 285 | FALSE, /* partial_inplace */ |
d006db6c | 286 | 0, /* src_mask */ |
5bd4f169 | 287 | 0, /* dst_mask */ |
b34976b6 | 288 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
289 | |
290 | /* A standard 32 bit relocation. */ | |
291 | HOWTO (R_PPC64_ADDR32, /* type */ | |
292 | 0, /* rightshift */ | |
293 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
294 | 32, /* bitsize */ | |
b34976b6 | 295 | FALSE, /* pc_relative */ |
5bd4f169 AM |
296 | 0, /* bitpos */ |
297 | complain_overflow_bitfield, /* complain_on_overflow */ | |
298 | bfd_elf_generic_reloc, /* special_function */ | |
299 | "R_PPC64_ADDR32", /* name */ | |
b34976b6 | 300 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
301 | 0, /* src_mask */ |
302 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 303 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
304 | |
305 | /* An absolute 26 bit branch; the lower two bits must be zero. | |
306 | FIXME: we don't check that, we just clear them. */ | |
307 | HOWTO (R_PPC64_ADDR24, /* type */ | |
308 | 0, /* rightshift */ | |
309 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
310 | 26, /* bitsize */ | |
b34976b6 | 311 | FALSE, /* pc_relative */ |
5bd4f169 AM |
312 | 0, /* bitpos */ |
313 | complain_overflow_bitfield, /* complain_on_overflow */ | |
314 | bfd_elf_generic_reloc, /* special_function */ | |
315 | "R_PPC64_ADDR24", /* name */ | |
b34976b6 | 316 | FALSE, /* partial_inplace */ |
d006db6c | 317 | 0, /* src_mask */ |
f5e87a1d | 318 | 0x03fffffc, /* dst_mask */ |
b34976b6 | 319 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
320 | |
321 | /* A standard 16 bit relocation. */ | |
322 | HOWTO (R_PPC64_ADDR16, /* type */ | |
323 | 0, /* rightshift */ | |
324 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
325 | 16, /* bitsize */ | |
b34976b6 | 326 | FALSE, /* pc_relative */ |
5bd4f169 AM |
327 | 0, /* bitpos */ |
328 | complain_overflow_bitfield, /* complain_on_overflow */ | |
329 | bfd_elf_generic_reloc, /* special_function */ | |
330 | "R_PPC64_ADDR16", /* name */ | |
b34976b6 | 331 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
332 | 0, /* src_mask */ |
333 | 0xffff, /* dst_mask */ | |
b34976b6 | 334 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
335 | |
336 | /* A 16 bit relocation without overflow. */ | |
337 | HOWTO (R_PPC64_ADDR16_LO, /* type */ | |
338 | 0, /* rightshift */ | |
339 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
340 | 16, /* bitsize */ | |
b34976b6 | 341 | FALSE, /* pc_relative */ |
5bd4f169 AM |
342 | 0, /* bitpos */ |
343 | complain_overflow_dont,/* complain_on_overflow */ | |
344 | bfd_elf_generic_reloc, /* special_function */ | |
345 | "R_PPC64_ADDR16_LO", /* name */ | |
b34976b6 | 346 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
347 | 0, /* src_mask */ |
348 | 0xffff, /* dst_mask */ | |
b34976b6 | 349 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
350 | |
351 | /* Bits 16-31 of an address. */ | |
352 | HOWTO (R_PPC64_ADDR16_HI, /* type */ | |
353 | 16, /* rightshift */ | |
354 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
355 | 16, /* bitsize */ | |
b34976b6 | 356 | FALSE, /* pc_relative */ |
5bd4f169 | 357 | 0, /* bitpos */ |
f9c6b907 | 358 | complain_overflow_signed, /* complain_on_overflow */ |
5bd4f169 AM |
359 | bfd_elf_generic_reloc, /* special_function */ |
360 | "R_PPC64_ADDR16_HI", /* name */ | |
b34976b6 | 361 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
362 | 0, /* src_mask */ |
363 | 0xffff, /* dst_mask */ | |
b34976b6 | 364 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
365 | |
366 | /* Bits 16-31 of an address, plus 1 if the contents of the low 16 | |
367 | bits, treated as a signed number, is negative. */ | |
368 | HOWTO (R_PPC64_ADDR16_HA, /* type */ | |
369 | 16, /* rightshift */ | |
370 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
371 | 16, /* bitsize */ | |
b34976b6 | 372 | FALSE, /* pc_relative */ |
5bd4f169 | 373 | 0, /* bitpos */ |
f9c6b907 | 374 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 375 | ppc64_elf_ha_reloc, /* special_function */ |
5bd4f169 | 376 | "R_PPC64_ADDR16_HA", /* name */ |
b34976b6 | 377 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
378 | 0, /* src_mask */ |
379 | 0xffff, /* dst_mask */ | |
b34976b6 | 380 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
381 | |
382 | /* An absolute 16 bit branch; the lower two bits must be zero. | |
383 | FIXME: we don't check that, we just clear them. */ | |
384 | HOWTO (R_PPC64_ADDR14, /* type */ | |
385 | 0, /* rightshift */ | |
386 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
387 | 16, /* bitsize */ | |
b34976b6 | 388 | FALSE, /* pc_relative */ |
5bd4f169 | 389 | 0, /* bitpos */ |
b80eed39 | 390 | complain_overflow_signed, /* complain_on_overflow */ |
2441e016 | 391 | ppc64_elf_branch_reloc, /* special_function */ |
5bd4f169 | 392 | "R_PPC64_ADDR14", /* name */ |
b34976b6 | 393 | FALSE, /* partial_inplace */ |
d006db6c | 394 | 0, /* src_mask */ |
f5e87a1d | 395 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 396 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
397 | |
398 | /* An absolute 16 bit branch, for which bit 10 should be set to | |
399 | indicate that the branch is expected to be taken. The lower two | |
400 | bits must be zero. */ | |
401 | HOWTO (R_PPC64_ADDR14_BRTAKEN, /* type */ | |
402 | 0, /* rightshift */ | |
403 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
404 | 16, /* bitsize */ | |
b34976b6 | 405 | FALSE, /* pc_relative */ |
5bd4f169 | 406 | 0, /* bitpos */ |
b80eed39 | 407 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 408 | ppc64_elf_brtaken_reloc, /* special_function */ |
5bd4f169 | 409 | "R_PPC64_ADDR14_BRTAKEN",/* name */ |
b34976b6 | 410 | FALSE, /* partial_inplace */ |
d006db6c | 411 | 0, /* src_mask */ |
f5e87a1d | 412 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 413 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
414 | |
415 | /* An absolute 16 bit branch, for which bit 10 should be set to | |
416 | indicate that the branch is not expected to be taken. The lower | |
417 | two bits must be zero. */ | |
418 | HOWTO (R_PPC64_ADDR14_BRNTAKEN, /* type */ | |
419 | 0, /* rightshift */ | |
420 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
421 | 16, /* bitsize */ | |
b34976b6 | 422 | FALSE, /* pc_relative */ |
5bd4f169 | 423 | 0, /* bitpos */ |
b80eed39 | 424 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 425 | ppc64_elf_brtaken_reloc, /* special_function */ |
5bd4f169 | 426 | "R_PPC64_ADDR14_BRNTAKEN",/* name */ |
b34976b6 | 427 | FALSE, /* partial_inplace */ |
d006db6c | 428 | 0, /* src_mask */ |
f5e87a1d | 429 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 430 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
431 | |
432 | /* A relative 26 bit branch; the lower two bits must be zero. */ | |
433 | HOWTO (R_PPC64_REL24, /* type */ | |
434 | 0, /* rightshift */ | |
435 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
436 | 26, /* bitsize */ | |
b34976b6 | 437 | TRUE, /* pc_relative */ |
5bd4f169 AM |
438 | 0, /* bitpos */ |
439 | complain_overflow_signed, /* complain_on_overflow */ | |
2441e016 | 440 | ppc64_elf_branch_reloc, /* special_function */ |
5bd4f169 | 441 | "R_PPC64_REL24", /* name */ |
b34976b6 | 442 | FALSE, /* partial_inplace */ |
d006db6c | 443 | 0, /* src_mask */ |
f5e87a1d | 444 | 0x03fffffc, /* dst_mask */ |
b34976b6 | 445 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
446 | |
447 | /* A relative 16 bit branch; the lower two bits must be zero. */ | |
448 | HOWTO (R_PPC64_REL14, /* type */ | |
449 | 0, /* rightshift */ | |
450 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
451 | 16, /* bitsize */ | |
b34976b6 | 452 | TRUE, /* pc_relative */ |
5bd4f169 AM |
453 | 0, /* bitpos */ |
454 | complain_overflow_signed, /* complain_on_overflow */ | |
2441e016 | 455 | ppc64_elf_branch_reloc, /* special_function */ |
5bd4f169 | 456 | "R_PPC64_REL14", /* name */ |
b34976b6 | 457 | FALSE, /* partial_inplace */ |
d006db6c | 458 | 0, /* src_mask */ |
f5e87a1d | 459 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 460 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
461 | |
462 | /* A relative 16 bit branch. Bit 10 should be set to indicate that | |
463 | the branch is expected to be taken. The lower two bits must be | |
464 | zero. */ | |
465 | HOWTO (R_PPC64_REL14_BRTAKEN, /* type */ | |
466 | 0, /* rightshift */ | |
467 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
468 | 16, /* bitsize */ | |
b34976b6 | 469 | TRUE, /* pc_relative */ |
5bd4f169 AM |
470 | 0, /* bitpos */ |
471 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 472 | ppc64_elf_brtaken_reloc, /* special_function */ |
5bd4f169 | 473 | "R_PPC64_REL14_BRTAKEN", /* name */ |
b34976b6 | 474 | FALSE, /* partial_inplace */ |
d006db6c | 475 | 0, /* src_mask */ |
f5e87a1d | 476 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 477 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
478 | |
479 | /* A relative 16 bit branch. Bit 10 should be set to indicate that | |
480 | the branch is not expected to be taken. The lower two bits must | |
481 | be zero. */ | |
482 | HOWTO (R_PPC64_REL14_BRNTAKEN, /* type */ | |
483 | 0, /* rightshift */ | |
484 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
485 | 16, /* bitsize */ | |
b34976b6 | 486 | TRUE, /* pc_relative */ |
5bd4f169 AM |
487 | 0, /* bitpos */ |
488 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 489 | ppc64_elf_brtaken_reloc, /* special_function */ |
5bd4f169 | 490 | "R_PPC64_REL14_BRNTAKEN",/* name */ |
b34976b6 | 491 | FALSE, /* partial_inplace */ |
d006db6c | 492 | 0, /* src_mask */ |
f5e87a1d | 493 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 494 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
495 | |
496 | /* Like R_PPC64_ADDR16, but referring to the GOT table entry for the | |
497 | symbol. */ | |
498 | HOWTO (R_PPC64_GOT16, /* type */ | |
499 | 0, /* rightshift */ | |
500 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
501 | 16, /* bitsize */ | |
b34976b6 | 502 | FALSE, /* pc_relative */ |
5bd4f169 AM |
503 | 0, /* bitpos */ |
504 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 505 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 506 | "R_PPC64_GOT16", /* name */ |
b34976b6 | 507 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
508 | 0, /* src_mask */ |
509 | 0xffff, /* dst_mask */ | |
b34976b6 | 510 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
511 | |
512 | /* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for | |
513 | the symbol. */ | |
514 | HOWTO (R_PPC64_GOT16_LO, /* type */ | |
515 | 0, /* rightshift */ | |
516 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
517 | 16, /* bitsize */ | |
b34976b6 | 518 | FALSE, /* pc_relative */ |
5bd4f169 AM |
519 | 0, /* bitpos */ |
520 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 521 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 522 | "R_PPC64_GOT16_LO", /* name */ |
b34976b6 | 523 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
524 | 0, /* src_mask */ |
525 | 0xffff, /* dst_mask */ | |
b34976b6 | 526 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
527 | |
528 | /* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for | |
529 | the symbol. */ | |
530 | HOWTO (R_PPC64_GOT16_HI, /* type */ | |
531 | 16, /* rightshift */ | |
532 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
533 | 16, /* bitsize */ | |
b34976b6 | 534 | FALSE, /* pc_relative */ |
5bd4f169 | 535 | 0, /* bitpos */ |
f9c6b907 | 536 | complain_overflow_signed,/* complain_on_overflow */ |
805fc799 | 537 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 538 | "R_PPC64_GOT16_HI", /* name */ |
b34976b6 | 539 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
540 | 0, /* src_mask */ |
541 | 0xffff, /* dst_mask */ | |
b34976b6 | 542 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
543 | |
544 | /* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for | |
545 | the symbol. */ | |
546 | HOWTO (R_PPC64_GOT16_HA, /* type */ | |
547 | 16, /* rightshift */ | |
548 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
549 | 16, /* bitsize */ | |
b34976b6 | 550 | FALSE, /* pc_relative */ |
5bd4f169 | 551 | 0, /* bitpos */ |
f9c6b907 | 552 | complain_overflow_signed,/* complain_on_overflow */ |
805fc799 | 553 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 554 | "R_PPC64_GOT16_HA", /* name */ |
b34976b6 | 555 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
556 | 0, /* src_mask */ |
557 | 0xffff, /* dst_mask */ | |
b34976b6 | 558 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
559 | |
560 | /* This is used only by the dynamic linker. The symbol should exist | |
561 | both in the object being run and in some shared library. The | |
562 | dynamic linker copies the data addressed by the symbol from the | |
563 | shared library into the object, because the object being | |
564 | run has to have the data at some particular address. */ | |
565 | HOWTO (R_PPC64_COPY, /* type */ | |
566 | 0, /* rightshift */ | |
f5e87a1d AM |
567 | 0, /* this one is variable size */ |
568 | 0, /* bitsize */ | |
b34976b6 | 569 | FALSE, /* pc_relative */ |
5bd4f169 | 570 | 0, /* bitpos */ |
f5e87a1d AM |
571 | complain_overflow_dont, /* complain_on_overflow */ |
572 | ppc64_elf_unhandled_reloc, /* special_function */ | |
5bd4f169 | 573 | "R_PPC64_COPY", /* name */ |
b34976b6 | 574 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
575 | 0, /* src_mask */ |
576 | 0, /* dst_mask */ | |
b34976b6 | 577 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
578 | |
579 | /* Like R_PPC64_ADDR64, but used when setting global offset table | |
580 | entries. */ | |
581 | HOWTO (R_PPC64_GLOB_DAT, /* type */ | |
582 | 0, /* rightshift */ | |
583 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
584 | 64, /* bitsize */ | |
b34976b6 | 585 | FALSE, /* pc_relative */ |
5bd4f169 AM |
586 | 0, /* bitpos */ |
587 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 588 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 589 | "R_PPC64_GLOB_DAT", /* name */ |
b34976b6 | 590 | FALSE, /* partial_inplace */ |
5bd4f169 | 591 | 0, /* src_mask */ |
f5e87a1d | 592 | ONES (64), /* dst_mask */ |
b34976b6 | 593 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
594 | |
595 | /* Created by the link editor. Marks a procedure linkage table | |
596 | entry for a symbol. */ | |
597 | HOWTO (R_PPC64_JMP_SLOT, /* type */ | |
598 | 0, /* rightshift */ | |
599 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
600 | 0, /* bitsize */ | |
b34976b6 | 601 | FALSE, /* pc_relative */ |
5bd4f169 AM |
602 | 0, /* bitpos */ |
603 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 604 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 605 | "R_PPC64_JMP_SLOT", /* name */ |
b34976b6 | 606 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
607 | 0, /* src_mask */ |
608 | 0, /* dst_mask */ | |
b34976b6 | 609 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
610 | |
611 | /* Used only by the dynamic linker. When the object is run, this | |
612 | doubleword64 is set to the load address of the object, plus the | |
613 | addend. */ | |
614 | HOWTO (R_PPC64_RELATIVE, /* type */ | |
615 | 0, /* rightshift */ | |
616 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
617 | 64, /* bitsize */ | |
b34976b6 | 618 | FALSE, /* pc_relative */ |
5bd4f169 AM |
619 | 0, /* bitpos */ |
620 | complain_overflow_dont, /* complain_on_overflow */ | |
621 | bfd_elf_generic_reloc, /* special_function */ | |
622 | "R_PPC64_RELATIVE", /* name */ | |
b34976b6 | 623 | FALSE, /* partial_inplace */ |
5bd4f169 | 624 | 0, /* src_mask */ |
f5e87a1d | 625 | ONES (64), /* dst_mask */ |
b34976b6 | 626 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
627 | |
628 | /* Like R_PPC64_ADDR32, but may be unaligned. */ | |
629 | HOWTO (R_PPC64_UADDR32, /* type */ | |
630 | 0, /* rightshift */ | |
631 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
632 | 32, /* bitsize */ | |
b34976b6 | 633 | FALSE, /* pc_relative */ |
5bd4f169 AM |
634 | 0, /* bitpos */ |
635 | complain_overflow_bitfield, /* complain_on_overflow */ | |
636 | bfd_elf_generic_reloc, /* special_function */ | |
637 | "R_PPC64_UADDR32", /* name */ | |
b34976b6 | 638 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
639 | 0, /* src_mask */ |
640 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 641 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
642 | |
643 | /* Like R_PPC64_ADDR16, but may be unaligned. */ | |
644 | HOWTO (R_PPC64_UADDR16, /* type */ | |
645 | 0, /* rightshift */ | |
646 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
647 | 16, /* bitsize */ | |
b34976b6 | 648 | FALSE, /* pc_relative */ |
5bd4f169 AM |
649 | 0, /* bitpos */ |
650 | complain_overflow_bitfield, /* complain_on_overflow */ | |
651 | bfd_elf_generic_reloc, /* special_function */ | |
652 | "R_PPC64_UADDR16", /* name */ | |
b34976b6 | 653 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
654 | 0, /* src_mask */ |
655 | 0xffff, /* dst_mask */ | |
b34976b6 | 656 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
657 | |
658 | /* 32-bit PC relative. */ | |
659 | HOWTO (R_PPC64_REL32, /* type */ | |
660 | 0, /* rightshift */ | |
661 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
662 | 32, /* bitsize */ | |
b34976b6 | 663 | TRUE, /* pc_relative */ |
5bd4f169 | 664 | 0, /* bitpos */ |
5bd4f169 AM |
665 | complain_overflow_signed, /* complain_on_overflow */ |
666 | bfd_elf_generic_reloc, /* special_function */ | |
667 | "R_PPC64_REL32", /* name */ | |
b34976b6 | 668 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
669 | 0, /* src_mask */ |
670 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 671 | TRUE), /* pcrel_offset */ |
5bd4f169 | 672 | |
10ed1bba | 673 | /* 32-bit relocation to the symbol's procedure linkage table. */ |
5bd4f169 AM |
674 | HOWTO (R_PPC64_PLT32, /* type */ |
675 | 0, /* rightshift */ | |
676 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
677 | 32, /* bitsize */ | |
b34976b6 | 678 | FALSE, /* pc_relative */ |
5bd4f169 AM |
679 | 0, /* bitpos */ |
680 | complain_overflow_bitfield, /* complain_on_overflow */ | |
805fc799 | 681 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 682 | "R_PPC64_PLT32", /* name */ |
b34976b6 | 683 | FALSE, /* partial_inplace */ |
5bd4f169 | 684 | 0, /* src_mask */ |
f5e87a1d | 685 | 0xffffffff, /* dst_mask */ |
b34976b6 | 686 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
687 | |
688 | /* 32-bit PC relative relocation to the symbol's procedure linkage table. | |
689 | FIXME: R_PPC64_PLTREL32 not supported. */ | |
690 | HOWTO (R_PPC64_PLTREL32, /* type */ | |
691 | 0, /* rightshift */ | |
692 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
693 | 32, /* bitsize */ | |
b34976b6 | 694 | TRUE, /* pc_relative */ |
5bd4f169 AM |
695 | 0, /* bitpos */ |
696 | complain_overflow_signed, /* complain_on_overflow */ | |
3ce51288 | 697 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 698 | "R_PPC64_PLTREL32", /* name */ |
b34976b6 | 699 | FALSE, /* partial_inplace */ |
5bd4f169 | 700 | 0, /* src_mask */ |
f5e87a1d | 701 | 0xffffffff, /* dst_mask */ |
b34976b6 | 702 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
703 | |
704 | /* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for | |
705 | the symbol. */ | |
706 | HOWTO (R_PPC64_PLT16_LO, /* type */ | |
707 | 0, /* rightshift */ | |
708 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
709 | 16, /* bitsize */ | |
b34976b6 | 710 | FALSE, /* pc_relative */ |
5bd4f169 AM |
711 | 0, /* bitpos */ |
712 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 713 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 714 | "R_PPC64_PLT16_LO", /* name */ |
b34976b6 | 715 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
716 | 0, /* src_mask */ |
717 | 0xffff, /* dst_mask */ | |
b34976b6 | 718 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
719 | |
720 | /* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for | |
721 | the symbol. */ | |
722 | HOWTO (R_PPC64_PLT16_HI, /* type */ | |
723 | 16, /* rightshift */ | |
724 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
725 | 16, /* bitsize */ | |
b34976b6 | 726 | FALSE, /* pc_relative */ |
5bd4f169 | 727 | 0, /* bitpos */ |
f9c6b907 | 728 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 729 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 730 | "R_PPC64_PLT16_HI", /* name */ |
b34976b6 | 731 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
732 | 0, /* src_mask */ |
733 | 0xffff, /* dst_mask */ | |
b34976b6 | 734 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
735 | |
736 | /* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for | |
737 | the symbol. */ | |
738 | HOWTO (R_PPC64_PLT16_HA, /* type */ | |
739 | 16, /* rightshift */ | |
740 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
741 | 16, /* bitsize */ | |
b34976b6 | 742 | FALSE, /* pc_relative */ |
5bd4f169 | 743 | 0, /* bitpos */ |
f9c6b907 | 744 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 745 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 746 | "R_PPC64_PLT16_HA", /* name */ |
b34976b6 | 747 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
748 | 0, /* src_mask */ |
749 | 0xffff, /* dst_mask */ | |
b34976b6 | 750 | FALSE), /* pcrel_offset */ |
5bd4f169 | 751 | |
c061c2d8 | 752 | /* 16-bit section relative relocation. */ |
5bd4f169 AM |
753 | HOWTO (R_PPC64_SECTOFF, /* type */ |
754 | 0, /* rightshift */ | |
c061c2d8 AM |
755 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
756 | 16, /* bitsize */ | |
b34976b6 | 757 | FALSE, /* pc_relative */ |
5bd4f169 | 758 | 0, /* bitpos */ |
b80eed39 | 759 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 760 | ppc64_elf_sectoff_reloc, /* special_function */ |
5bd4f169 | 761 | "R_PPC64_SECTOFF", /* name */ |
b34976b6 | 762 | FALSE, /* partial_inplace */ |
5bd4f169 | 763 | 0, /* src_mask */ |
c061c2d8 | 764 | 0xffff, /* dst_mask */ |
b34976b6 | 765 | FALSE), /* pcrel_offset */ |
5bd4f169 | 766 | |
c061c2d8 | 767 | /* Like R_PPC64_SECTOFF, but no overflow warning. */ |
5bd4f169 AM |
768 | HOWTO (R_PPC64_SECTOFF_LO, /* type */ |
769 | 0, /* rightshift */ | |
770 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
771 | 16, /* bitsize */ | |
b34976b6 | 772 | FALSE, /* pc_relative */ |
5bd4f169 AM |
773 | 0, /* bitpos */ |
774 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 775 | ppc64_elf_sectoff_reloc, /* special_function */ |
5bd4f169 | 776 | "R_PPC64_SECTOFF_LO", /* name */ |
b34976b6 | 777 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
778 | 0, /* src_mask */ |
779 | 0xffff, /* dst_mask */ | |
b34976b6 | 780 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
781 | |
782 | /* 16-bit upper half section relative relocation. */ | |
783 | HOWTO (R_PPC64_SECTOFF_HI, /* type */ | |
784 | 16, /* rightshift */ | |
785 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
786 | 16, /* bitsize */ | |
b34976b6 | 787 | FALSE, /* pc_relative */ |
5bd4f169 | 788 | 0, /* bitpos */ |
f9c6b907 | 789 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 790 | ppc64_elf_sectoff_reloc, /* special_function */ |
5bd4f169 | 791 | "R_PPC64_SECTOFF_HI", /* name */ |
b34976b6 | 792 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
793 | 0, /* src_mask */ |
794 | 0xffff, /* dst_mask */ | |
b34976b6 | 795 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
796 | |
797 | /* 16-bit upper half adjusted section relative relocation. */ | |
798 | HOWTO (R_PPC64_SECTOFF_HA, /* type */ | |
799 | 16, /* rightshift */ | |
800 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
801 | 16, /* bitsize */ | |
b34976b6 | 802 | FALSE, /* pc_relative */ |
5bd4f169 | 803 | 0, /* bitpos */ |
f9c6b907 | 804 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 805 | ppc64_elf_sectoff_ha_reloc, /* special_function */ |
5bd4f169 | 806 | "R_PPC64_SECTOFF_HA", /* name */ |
b34976b6 | 807 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
808 | 0, /* src_mask */ |
809 | 0xffff, /* dst_mask */ | |
b34976b6 | 810 | FALSE), /* pcrel_offset */ |
5bd4f169 | 811 | |
04c9666a AM |
812 | /* Like R_PPC64_REL24 without touching the two least significant bits. */ |
813 | HOWTO (R_PPC64_REL30, /* type */ | |
5bd4f169 AM |
814 | 2, /* rightshift */ |
815 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
816 | 30, /* bitsize */ | |
b34976b6 | 817 | TRUE, /* pc_relative */ |
5bd4f169 AM |
818 | 0, /* bitpos */ |
819 | complain_overflow_dont, /* complain_on_overflow */ | |
820 | bfd_elf_generic_reloc, /* special_function */ | |
04c9666a | 821 | "R_PPC64_REL30", /* name */ |
b34976b6 | 822 | FALSE, /* partial_inplace */ |
d006db6c | 823 | 0, /* src_mask */ |
5bd4f169 | 824 | 0xfffffffc, /* dst_mask */ |
b34976b6 | 825 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
826 | |
827 | /* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */ | |
828 | ||
829 | /* A standard 64-bit relocation. */ | |
830 | HOWTO (R_PPC64_ADDR64, /* type */ | |
831 | 0, /* rightshift */ | |
832 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
833 | 64, /* bitsize */ | |
b34976b6 | 834 | FALSE, /* pc_relative */ |
5bd4f169 AM |
835 | 0, /* bitpos */ |
836 | complain_overflow_dont, /* complain_on_overflow */ | |
837 | bfd_elf_generic_reloc, /* special_function */ | |
838 | "R_PPC64_ADDR64", /* name */ | |
b34976b6 | 839 | FALSE, /* partial_inplace */ |
5bd4f169 | 840 | 0, /* src_mask */ |
f5e87a1d | 841 | ONES (64), /* dst_mask */ |
b34976b6 | 842 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
843 | |
844 | /* The bits 32-47 of an address. */ | |
845 | HOWTO (R_PPC64_ADDR16_HIGHER, /* type */ | |
846 | 32, /* rightshift */ | |
847 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
848 | 16, /* bitsize */ | |
b34976b6 | 849 | FALSE, /* pc_relative */ |
5bd4f169 AM |
850 | 0, /* bitpos */ |
851 | complain_overflow_dont, /* complain_on_overflow */ | |
852 | bfd_elf_generic_reloc, /* special_function */ | |
853 | "R_PPC64_ADDR16_HIGHER", /* name */ | |
b34976b6 | 854 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
855 | 0, /* src_mask */ |
856 | 0xffff, /* dst_mask */ | |
b34976b6 | 857 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
858 | |
859 | /* The bits 32-47 of an address, plus 1 if the contents of the low | |
860 | 16 bits, treated as a signed number, is negative. */ | |
861 | HOWTO (R_PPC64_ADDR16_HIGHERA, /* type */ | |
862 | 32, /* rightshift */ | |
863 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
864 | 16, /* bitsize */ | |
b34976b6 | 865 | FALSE, /* pc_relative */ |
5bd4f169 AM |
866 | 0, /* bitpos */ |
867 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 868 | ppc64_elf_ha_reloc, /* special_function */ |
5bd4f169 | 869 | "R_PPC64_ADDR16_HIGHERA", /* name */ |
b34976b6 | 870 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
871 | 0, /* src_mask */ |
872 | 0xffff, /* dst_mask */ | |
b34976b6 | 873 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
874 | |
875 | /* The bits 48-63 of an address. */ | |
876 | HOWTO (R_PPC64_ADDR16_HIGHEST,/* type */ | |
877 | 48, /* rightshift */ | |
878 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
879 | 16, /* bitsize */ | |
b34976b6 | 880 | FALSE, /* pc_relative */ |
5bd4f169 AM |
881 | 0, /* bitpos */ |
882 | complain_overflow_dont, /* complain_on_overflow */ | |
883 | bfd_elf_generic_reloc, /* special_function */ | |
884 | "R_PPC64_ADDR16_HIGHEST", /* name */ | |
b34976b6 | 885 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
886 | 0, /* src_mask */ |
887 | 0xffff, /* dst_mask */ | |
b34976b6 | 888 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
889 | |
890 | /* The bits 48-63 of an address, plus 1 if the contents of the low | |
891 | 16 bits, treated as a signed number, is negative. */ | |
892 | HOWTO (R_PPC64_ADDR16_HIGHESTA,/* type */ | |
893 | 48, /* rightshift */ | |
894 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
895 | 16, /* bitsize */ | |
b34976b6 | 896 | FALSE, /* pc_relative */ |
5bd4f169 AM |
897 | 0, /* bitpos */ |
898 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 899 | ppc64_elf_ha_reloc, /* special_function */ |
5bd4f169 | 900 | "R_PPC64_ADDR16_HIGHESTA", /* name */ |
b34976b6 | 901 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
902 | 0, /* src_mask */ |
903 | 0xffff, /* dst_mask */ | |
b34976b6 | 904 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
905 | |
906 | /* Like ADDR64, but may be unaligned. */ | |
907 | HOWTO (R_PPC64_UADDR64, /* type */ | |
908 | 0, /* rightshift */ | |
909 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
910 | 64, /* bitsize */ | |
b34976b6 | 911 | FALSE, /* pc_relative */ |
5bd4f169 AM |
912 | 0, /* bitpos */ |
913 | complain_overflow_dont, /* complain_on_overflow */ | |
914 | bfd_elf_generic_reloc, /* special_function */ | |
915 | "R_PPC64_UADDR64", /* name */ | |
b34976b6 | 916 | FALSE, /* partial_inplace */ |
5bd4f169 | 917 | 0, /* src_mask */ |
f5e87a1d | 918 | ONES (64), /* dst_mask */ |
b34976b6 | 919 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
920 | |
921 | /* 64-bit relative relocation. */ | |
922 | HOWTO (R_PPC64_REL64, /* type */ | |
923 | 0, /* rightshift */ | |
924 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
925 | 64, /* bitsize */ | |
b34976b6 | 926 | TRUE, /* pc_relative */ |
5bd4f169 AM |
927 | 0, /* bitpos */ |
928 | complain_overflow_dont, /* complain_on_overflow */ | |
929 | bfd_elf_generic_reloc, /* special_function */ | |
930 | "R_PPC64_REL64", /* name */ | |
b34976b6 | 931 | FALSE, /* partial_inplace */ |
5bd4f169 | 932 | 0, /* src_mask */ |
f5e87a1d | 933 | ONES (64), /* dst_mask */ |
b34976b6 | 934 | TRUE), /* pcrel_offset */ |
5bd4f169 | 935 | |
cedb70c5 | 936 | /* 64-bit relocation to the symbol's procedure linkage table. */ |
5bd4f169 AM |
937 | HOWTO (R_PPC64_PLT64, /* type */ |
938 | 0, /* rightshift */ | |
939 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
940 | 64, /* bitsize */ | |
b34976b6 | 941 | FALSE, /* pc_relative */ |
5bd4f169 AM |
942 | 0, /* bitpos */ |
943 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 944 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 945 | "R_PPC64_PLT64", /* name */ |
b34976b6 | 946 | FALSE, /* partial_inplace */ |
5bd4f169 | 947 | 0, /* src_mask */ |
f5e87a1d | 948 | ONES (64), /* dst_mask */ |
b34976b6 | 949 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
950 | |
951 | /* 64-bit PC relative relocation to the symbol's procedure linkage | |
952 | table. */ | |
953 | /* FIXME: R_PPC64_PLTREL64 not supported. */ | |
954 | HOWTO (R_PPC64_PLTREL64, /* type */ | |
955 | 0, /* rightshift */ | |
956 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
957 | 64, /* bitsize */ | |
b34976b6 | 958 | TRUE, /* pc_relative */ |
5bd4f169 AM |
959 | 0, /* bitpos */ |
960 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 961 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 962 | "R_PPC64_PLTREL64", /* name */ |
b34976b6 | 963 | FALSE, /* partial_inplace */ |
5bd4f169 | 964 | 0, /* src_mask */ |
f5e87a1d | 965 | ONES (64), /* dst_mask */ |
b34976b6 | 966 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
967 | |
968 | /* 16 bit TOC-relative relocation. */ | |
969 | ||
970 | /* R_PPC64_TOC16 47 half16* S + A - .TOC. */ | |
971 | HOWTO (R_PPC64_TOC16, /* type */ | |
972 | 0, /* rightshift */ | |
973 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
974 | 16, /* bitsize */ | |
b34976b6 | 975 | FALSE, /* pc_relative */ |
5bd4f169 AM |
976 | 0, /* bitpos */ |
977 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 978 | ppc64_elf_toc_reloc, /* special_function */ |
5bd4f169 | 979 | "R_PPC64_TOC16", /* name */ |
b34976b6 | 980 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
981 | 0, /* src_mask */ |
982 | 0xffff, /* dst_mask */ | |
b34976b6 | 983 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
984 | |
985 | /* 16 bit TOC-relative relocation without overflow. */ | |
986 | ||
987 | /* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */ | |
988 | HOWTO (R_PPC64_TOC16_LO, /* type */ | |
989 | 0, /* rightshift */ | |
990 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
991 | 16, /* bitsize */ | |
b34976b6 | 992 | FALSE, /* pc_relative */ |
5bd4f169 AM |
993 | 0, /* bitpos */ |
994 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 995 | ppc64_elf_toc_reloc, /* special_function */ |
5bd4f169 | 996 | "R_PPC64_TOC16_LO", /* name */ |
b34976b6 | 997 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
998 | 0, /* src_mask */ |
999 | 0xffff, /* dst_mask */ | |
b34976b6 | 1000 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
1001 | |
1002 | /* 16 bit TOC-relative relocation, high 16 bits. */ | |
1003 | ||
1004 | /* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */ | |
1005 | HOWTO (R_PPC64_TOC16_HI, /* type */ | |
1006 | 16, /* rightshift */ | |
1007 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1008 | 16, /* bitsize */ | |
b34976b6 | 1009 | FALSE, /* pc_relative */ |
5bd4f169 | 1010 | 0, /* bitpos */ |
f9c6b907 | 1011 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 1012 | ppc64_elf_toc_reloc, /* special_function */ |
5bd4f169 | 1013 | "R_PPC64_TOC16_HI", /* name */ |
b34976b6 | 1014 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1015 | 0, /* src_mask */ |
1016 | 0xffff, /* dst_mask */ | |
b34976b6 | 1017 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
1018 | |
1019 | /* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the | |
1020 | contents of the low 16 bits, treated as a signed number, is | |
1021 | negative. */ | |
1022 | ||
1023 | /* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */ | |
1024 | HOWTO (R_PPC64_TOC16_HA, /* type */ | |
1025 | 16, /* rightshift */ | |
1026 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1027 | 16, /* bitsize */ | |
b34976b6 | 1028 | FALSE, /* pc_relative */ |
5bd4f169 | 1029 | 0, /* bitpos */ |
f9c6b907 | 1030 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 1031 | ppc64_elf_toc_ha_reloc, /* special_function */ |
5bd4f169 | 1032 | "R_PPC64_TOC16_HA", /* name */ |
b34976b6 | 1033 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1034 | 0, /* src_mask */ |
1035 | 0xffff, /* dst_mask */ | |
b34976b6 | 1036 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
1037 | |
1038 | /* 64-bit relocation; insert value of TOC base (.TOC.). */ | |
1039 | ||
1040 | /* R_PPC64_TOC 51 doubleword64 .TOC. */ | |
1041 | HOWTO (R_PPC64_TOC, /* type */ | |
1042 | 0, /* rightshift */ | |
1043 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
1044 | 64, /* bitsize */ | |
b34976b6 | 1045 | FALSE, /* pc_relative */ |
5bd4f169 | 1046 | 0, /* bitpos */ |
b80eed39 | 1047 | complain_overflow_dont, /* complain_on_overflow */ |
805fc799 | 1048 | ppc64_elf_toc64_reloc, /* special_function */ |
5bd4f169 | 1049 | "R_PPC64_TOC", /* name */ |
b34976b6 | 1050 | FALSE, /* partial_inplace */ |
5bd4f169 | 1051 | 0, /* src_mask */ |
f5e87a1d | 1052 | ONES (64), /* dst_mask */ |
b34976b6 | 1053 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
1054 | |
1055 | /* Like R_PPC64_GOT16, but also informs the link editor that the | |
1056 | value to relocate may (!) refer to a PLT entry which the link | |
1057 | editor (a) may replace with the symbol value. If the link editor | |
1058 | is unable to fully resolve the symbol, it may (b) create a PLT | |
1059 | entry and store the address to the new PLT entry in the GOT. | |
1060 | This permits lazy resolution of function symbols at run time. | |
1061 | The link editor may also skip all of this and just (c) emit a | |
1062 | R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */ | |
1063 | /* FIXME: R_PPC64_PLTGOT16 not implemented. */ | |
1064 | HOWTO (R_PPC64_PLTGOT16, /* type */ | |
1065 | 0, /* rightshift */ | |
1066 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1067 | 16, /* bitsize */ | |
b34976b6 | 1068 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1069 | 0, /* bitpos */ |
1070 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 1071 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb AM |
1072 | "R_PPC64_PLTGOT16", /* name */ |
1073 | FALSE, /* partial_inplace */ | |
1074 | 0, /* src_mask */ | |
1075 | 0xffff, /* dst_mask */ | |
1076 | FALSE), /* pcrel_offset */ | |
1077 | ||
1078 | /* Like R_PPC64_PLTGOT16, but without overflow. */ | |
1079 | /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */ | |
1080 | HOWTO (R_PPC64_PLTGOT16_LO, /* type */ | |
1081 | 0, /* rightshift */ | |
1082 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1083 | 16, /* bitsize */ | |
1084 | FALSE, /* pc_relative */ | |
1085 | 0, /* bitpos */ | |
1086 | complain_overflow_dont, /* complain_on_overflow */ | |
1087 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1088 | "R_PPC64_PLTGOT16_LO", /* name */ | |
1089 | FALSE, /* partial_inplace */ | |
1090 | 0, /* src_mask */ | |
1091 | 0xffff, /* dst_mask */ | |
1092 | FALSE), /* pcrel_offset */ | |
1093 | ||
1094 | /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */ | |
1095 | /* FIXME: R_PPC64_PLTGOT16_HI not implemented. */ | |
1096 | HOWTO (R_PPC64_PLTGOT16_HI, /* type */ | |
1097 | 16, /* rightshift */ | |
1098 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1099 | 16, /* bitsize */ | |
1100 | FALSE, /* pc_relative */ | |
1101 | 0, /* bitpos */ | |
f9c6b907 | 1102 | complain_overflow_signed, /* complain_on_overflow */ |
411e1bfb AM |
1103 | ppc64_elf_unhandled_reloc, /* special_function */ |
1104 | "R_PPC64_PLTGOT16_HI", /* name */ | |
1105 | FALSE, /* partial_inplace */ | |
1106 | 0, /* src_mask */ | |
1107 | 0xffff, /* dst_mask */ | |
1108 | FALSE), /* pcrel_offset */ | |
1109 | ||
1110 | /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus | |
1111 | 1 if the contents of the low 16 bits, treated as a signed number, | |
1112 | is negative. */ | |
1113 | /* FIXME: R_PPC64_PLTGOT16_HA not implemented. */ | |
1114 | HOWTO (R_PPC64_PLTGOT16_HA, /* type */ | |
1115 | 16, /* rightshift */ | |
1116 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1117 | 16, /* bitsize */ | |
1118 | FALSE, /* pc_relative */ | |
1119 | 0, /* bitpos */ | |
f9c6b907 | 1120 | complain_overflow_signed, /* complain_on_overflow */ |
411e1bfb AM |
1121 | ppc64_elf_unhandled_reloc, /* special_function */ |
1122 | "R_PPC64_PLTGOT16_HA", /* name */ | |
1123 | FALSE, /* partial_inplace */ | |
1124 | 0, /* src_mask */ | |
1125 | 0xffff, /* dst_mask */ | |
1126 | FALSE), /* pcrel_offset */ | |
1127 | ||
1128 | /* Like R_PPC64_ADDR16, but for instructions with a DS field. */ | |
1129 | HOWTO (R_PPC64_ADDR16_DS, /* type */ | |
1130 | 0, /* rightshift */ | |
1131 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1132 | 16, /* bitsize */ | |
1133 | FALSE, /* pc_relative */ | |
1134 | 0, /* bitpos */ | |
b80eed39 | 1135 | complain_overflow_signed, /* complain_on_overflow */ |
411e1bfb AM |
1136 | bfd_elf_generic_reloc, /* special_function */ |
1137 | "R_PPC64_ADDR16_DS", /* name */ | |
1138 | FALSE, /* partial_inplace */ | |
1139 | 0, /* src_mask */ | |
1140 | 0xfffc, /* dst_mask */ | |
1141 | FALSE), /* pcrel_offset */ | |
1142 | ||
1143 | /* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */ | |
1144 | HOWTO (R_PPC64_ADDR16_LO_DS, /* type */ | |
1145 | 0, /* rightshift */ | |
1146 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1147 | 16, /* bitsize */ | |
1148 | FALSE, /* pc_relative */ | |
1149 | 0, /* bitpos */ | |
1150 | complain_overflow_dont,/* complain_on_overflow */ | |
1151 | bfd_elf_generic_reloc, /* special_function */ | |
1152 | "R_PPC64_ADDR16_LO_DS",/* name */ | |
1153 | FALSE, /* partial_inplace */ | |
1154 | 0, /* src_mask */ | |
1155 | 0xfffc, /* dst_mask */ | |
1156 | FALSE), /* pcrel_offset */ | |
1157 | ||
1158 | /* Like R_PPC64_GOT16, but for instructions with a DS field. */ | |
1159 | HOWTO (R_PPC64_GOT16_DS, /* type */ | |
1160 | 0, /* rightshift */ | |
1161 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1162 | 16, /* bitsize */ | |
1163 | FALSE, /* pc_relative */ | |
1164 | 0, /* bitpos */ | |
1165 | complain_overflow_signed, /* complain_on_overflow */ | |
1166 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1167 | "R_PPC64_GOT16_DS", /* name */ | |
1168 | FALSE, /* partial_inplace */ | |
1169 | 0, /* src_mask */ | |
1170 | 0xfffc, /* dst_mask */ | |
1171 | FALSE), /* pcrel_offset */ | |
1172 | ||
1173 | /* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */ | |
1174 | HOWTO (R_PPC64_GOT16_LO_DS, /* type */ | |
1175 | 0, /* rightshift */ | |
1176 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1177 | 16, /* bitsize */ | |
1178 | FALSE, /* pc_relative */ | |
1179 | 0, /* bitpos */ | |
1180 | complain_overflow_dont, /* complain_on_overflow */ | |
1181 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1182 | "R_PPC64_GOT16_LO_DS", /* name */ | |
1183 | FALSE, /* partial_inplace */ | |
1184 | 0, /* src_mask */ | |
1185 | 0xfffc, /* dst_mask */ | |
1186 | FALSE), /* pcrel_offset */ | |
1187 | ||
1188 | /* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */ | |
1189 | HOWTO (R_PPC64_PLT16_LO_DS, /* type */ | |
1190 | 0, /* rightshift */ | |
1191 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1192 | 16, /* bitsize */ | |
1193 | FALSE, /* pc_relative */ | |
1194 | 0, /* bitpos */ | |
1195 | complain_overflow_dont, /* complain_on_overflow */ | |
1196 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1197 | "R_PPC64_PLT16_LO_DS", /* name */ | |
1198 | FALSE, /* partial_inplace */ | |
1199 | 0, /* src_mask */ | |
1200 | 0xfffc, /* dst_mask */ | |
1201 | FALSE), /* pcrel_offset */ | |
1202 | ||
1203 | /* Like R_PPC64_SECTOFF, but for instructions with a DS field. */ | |
1204 | HOWTO (R_PPC64_SECTOFF_DS, /* type */ | |
1205 | 0, /* rightshift */ | |
1206 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1207 | 16, /* bitsize */ | |
1208 | FALSE, /* pc_relative */ | |
1209 | 0, /* bitpos */ | |
b80eed39 | 1210 | complain_overflow_signed, /* complain_on_overflow */ |
411e1bfb AM |
1211 | ppc64_elf_sectoff_reloc, /* special_function */ |
1212 | "R_PPC64_SECTOFF_DS", /* name */ | |
1213 | FALSE, /* partial_inplace */ | |
1214 | 0, /* src_mask */ | |
1215 | 0xfffc, /* dst_mask */ | |
1216 | FALSE), /* pcrel_offset */ | |
1217 | ||
1218 | /* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */ | |
1219 | HOWTO (R_PPC64_SECTOFF_LO_DS, /* type */ | |
1220 | 0, /* rightshift */ | |
1221 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1222 | 16, /* bitsize */ | |
1223 | FALSE, /* pc_relative */ | |
1224 | 0, /* bitpos */ | |
1225 | complain_overflow_dont, /* complain_on_overflow */ | |
1226 | ppc64_elf_sectoff_reloc, /* special_function */ | |
1227 | "R_PPC64_SECTOFF_LO_DS",/* name */ | |
1228 | FALSE, /* partial_inplace */ | |
1229 | 0, /* src_mask */ | |
1230 | 0xfffc, /* dst_mask */ | |
1231 | FALSE), /* pcrel_offset */ | |
1232 | ||
1233 | /* Like R_PPC64_TOC16, but for instructions with a DS field. */ | |
1234 | HOWTO (R_PPC64_TOC16_DS, /* type */ | |
1235 | 0, /* rightshift */ | |
1236 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1237 | 16, /* bitsize */ | |
1238 | FALSE, /* pc_relative */ | |
1239 | 0, /* bitpos */ | |
1240 | complain_overflow_signed, /* complain_on_overflow */ | |
1241 | ppc64_elf_toc_reloc, /* special_function */ | |
1242 | "R_PPC64_TOC16_DS", /* name */ | |
1243 | FALSE, /* partial_inplace */ | |
1244 | 0, /* src_mask */ | |
1245 | 0xfffc, /* dst_mask */ | |
1246 | FALSE), /* pcrel_offset */ | |
1247 | ||
1248 | /* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */ | |
1249 | HOWTO (R_PPC64_TOC16_LO_DS, /* type */ | |
1250 | 0, /* rightshift */ | |
1251 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1252 | 16, /* bitsize */ | |
1253 | FALSE, /* pc_relative */ | |
1254 | 0, /* bitpos */ | |
1255 | complain_overflow_dont, /* complain_on_overflow */ | |
1256 | ppc64_elf_toc_reloc, /* special_function */ | |
1257 | "R_PPC64_TOC16_LO_DS", /* name */ | |
1258 | FALSE, /* partial_inplace */ | |
1259 | 0, /* src_mask */ | |
1260 | 0xfffc, /* dst_mask */ | |
1261 | FALSE), /* pcrel_offset */ | |
1262 | ||
1263 | /* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */ | |
1264 | /* FIXME: R_PPC64_PLTGOT16_DS not implemented. */ | |
6bfdb61b | 1265 | HOWTO (R_PPC64_PLTGOT16_DS, /* type */ |
411e1bfb AM |
1266 | 0, /* rightshift */ |
1267 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1268 | 16, /* bitsize */ | |
1269 | FALSE, /* pc_relative */ | |
1270 | 0, /* bitpos */ | |
1271 | complain_overflow_signed, /* complain_on_overflow */ | |
1272 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1273 | "R_PPC64_PLTGOT16_DS", /* name */ | |
1274 | FALSE, /* partial_inplace */ | |
1275 | 0, /* src_mask */ | |
1276 | 0xfffc, /* dst_mask */ | |
1277 | FALSE), /* pcrel_offset */ | |
1278 | ||
1279 | /* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */ | |
1280 | /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */ | |
1281 | HOWTO (R_PPC64_PLTGOT16_LO_DS,/* type */ | |
1282 | 0, /* rightshift */ | |
1283 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1284 | 16, /* bitsize */ | |
1285 | FALSE, /* pc_relative */ | |
1286 | 0, /* bitpos */ | |
1287 | complain_overflow_dont, /* complain_on_overflow */ | |
1288 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1289 | "R_PPC64_PLTGOT16_LO_DS",/* name */ | |
1290 | FALSE, /* partial_inplace */ | |
1291 | 0, /* src_mask */ | |
1292 | 0xfffc, /* dst_mask */ | |
1293 | FALSE), /* pcrel_offset */ | |
1294 | ||
727fc41e | 1295 | /* Marker relocs for TLS. */ |
411e1bfb AM |
1296 | HOWTO (R_PPC64_TLS, |
1297 | 0, /* rightshift */ | |
1298 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1299 | 32, /* bitsize */ | |
1300 | FALSE, /* pc_relative */ | |
1301 | 0, /* bitpos */ | |
1302 | complain_overflow_dont, /* complain_on_overflow */ | |
1303 | bfd_elf_generic_reloc, /* special_function */ | |
1304 | "R_PPC64_TLS", /* name */ | |
1305 | FALSE, /* partial_inplace */ | |
1306 | 0, /* src_mask */ | |
1307 | 0, /* dst_mask */ | |
1308 | FALSE), /* pcrel_offset */ | |
1309 | ||
727fc41e AM |
1310 | HOWTO (R_PPC64_TLSGD, |
1311 | 0, /* rightshift */ | |
1312 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1313 | 32, /* bitsize */ | |
1314 | FALSE, /* pc_relative */ | |
1315 | 0, /* bitpos */ | |
1316 | complain_overflow_dont, /* complain_on_overflow */ | |
1317 | bfd_elf_generic_reloc, /* special_function */ | |
1318 | "R_PPC64_TLSGD", /* name */ | |
1319 | FALSE, /* partial_inplace */ | |
1320 | 0, /* src_mask */ | |
1321 | 0, /* dst_mask */ | |
1322 | FALSE), /* pcrel_offset */ | |
1323 | ||
1324 | HOWTO (R_PPC64_TLSLD, | |
1325 | 0, /* rightshift */ | |
1326 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1327 | 32, /* bitsize */ | |
1328 | FALSE, /* pc_relative */ | |
1329 | 0, /* bitpos */ | |
1330 | complain_overflow_dont, /* complain_on_overflow */ | |
1331 | bfd_elf_generic_reloc, /* special_function */ | |
1332 | "R_PPC64_TLSLD", /* name */ | |
1333 | FALSE, /* partial_inplace */ | |
1334 | 0, /* src_mask */ | |
1335 | 0, /* dst_mask */ | |
1336 | FALSE), /* pcrel_offset */ | |
1337 | ||
3b421ab3 AM |
1338 | HOWTO (R_PPC64_TOCSAVE, |
1339 | 0, /* rightshift */ | |
1340 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1341 | 32, /* bitsize */ | |
1342 | FALSE, /* pc_relative */ | |
1343 | 0, /* bitpos */ | |
1344 | complain_overflow_dont, /* complain_on_overflow */ | |
1345 | bfd_elf_generic_reloc, /* special_function */ | |
1346 | "R_PPC64_TOCSAVE", /* name */ | |
1347 | FALSE, /* partial_inplace */ | |
1348 | 0, /* src_mask */ | |
1349 | 0, /* dst_mask */ | |
1350 | FALSE), /* pcrel_offset */ | |
1351 | ||
411e1bfb AM |
1352 | /* Computes the load module index of the load module that contains the |
1353 | definition of its TLS sym. */ | |
1354 | HOWTO (R_PPC64_DTPMOD64, | |
1355 | 0, /* rightshift */ | |
1356 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
1357 | 64, /* bitsize */ | |
1358 | FALSE, /* pc_relative */ | |
1359 | 0, /* bitpos */ | |
1360 | complain_overflow_dont, /* complain_on_overflow */ | |
1361 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1362 | "R_PPC64_DTPMOD64", /* name */ | |
1363 | FALSE, /* partial_inplace */ | |
1364 | 0, /* src_mask */ | |
1365 | ONES (64), /* dst_mask */ | |
1366 | FALSE), /* pcrel_offset */ | |
1367 | ||
1368 | /* Computes a dtv-relative displacement, the difference between the value | |
1369 | of sym+add and the base address of the thread-local storage block that | |
1370 | contains the definition of sym, minus 0x8000. */ | |
1371 | HOWTO (R_PPC64_DTPREL64, | |
1372 | 0, /* rightshift */ | |
1373 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
1374 | 64, /* bitsize */ | |
1375 | FALSE, /* pc_relative */ | |
1376 | 0, /* bitpos */ | |
1377 | complain_overflow_dont, /* complain_on_overflow */ | |
1378 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1379 | "R_PPC64_DTPREL64", /* name */ | |
1380 | FALSE, /* partial_inplace */ | |
1381 | 0, /* src_mask */ | |
1382 | ONES (64), /* dst_mask */ | |
1383 | FALSE), /* pcrel_offset */ | |
1384 | ||
1385 | /* A 16 bit dtprel reloc. */ | |
1386 | HOWTO (R_PPC64_DTPREL16, | |
1387 | 0, /* rightshift */ | |
1388 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1389 | 16, /* bitsize */ | |
1390 | FALSE, /* pc_relative */ | |
1391 | 0, /* bitpos */ | |
1392 | complain_overflow_signed, /* complain_on_overflow */ | |
1393 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1394 | "R_PPC64_DTPREL16", /* name */ | |
1395 | FALSE, /* partial_inplace */ | |
1396 | 0, /* src_mask */ | |
1397 | 0xffff, /* dst_mask */ | |
1398 | FALSE), /* pcrel_offset */ | |
1399 | ||
1400 | /* Like DTPREL16, but no overflow. */ | |
1401 | HOWTO (R_PPC64_DTPREL16_LO, | |
1402 | 0, /* rightshift */ | |
1403 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1404 | 16, /* bitsize */ | |
1405 | FALSE, /* pc_relative */ | |
1406 | 0, /* bitpos */ | |
1407 | complain_overflow_dont, /* complain_on_overflow */ | |
1408 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1409 | "R_PPC64_DTPREL16_LO", /* name */ | |
1410 | FALSE, /* partial_inplace */ | |
1411 | 0, /* src_mask */ | |
1412 | 0xffff, /* dst_mask */ | |
1413 | FALSE), /* pcrel_offset */ | |
1414 | ||
1415 | /* Like DTPREL16_LO, but next higher group of 16 bits. */ | |
1416 | HOWTO (R_PPC64_DTPREL16_HI, | |
1417 | 16, /* rightshift */ | |
1418 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1419 | 16, /* bitsize */ | |
1420 | FALSE, /* pc_relative */ | |
1421 | 0, /* bitpos */ | |
f9c6b907 | 1422 | complain_overflow_signed, /* complain_on_overflow */ |
411e1bfb AM |
1423 | ppc64_elf_unhandled_reloc, /* special_function */ |
1424 | "R_PPC64_DTPREL16_HI", /* name */ | |
1425 | FALSE, /* partial_inplace */ | |
1426 | 0, /* src_mask */ | |
1427 | 0xffff, /* dst_mask */ | |
1428 | FALSE), /* pcrel_offset */ | |
1429 | ||
1430 | /* Like DTPREL16_HI, but adjust for low 16 bits. */ | |
1431 | HOWTO (R_PPC64_DTPREL16_HA, | |
1432 | 16, /* rightshift */ | |
1433 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1434 | 16, /* bitsize */ | |
1435 | FALSE, /* pc_relative */ | |
1436 | 0, /* bitpos */ | |
f9c6b907 | 1437 | complain_overflow_signed, /* complain_on_overflow */ |
411e1bfb AM |
1438 | ppc64_elf_unhandled_reloc, /* special_function */ |
1439 | "R_PPC64_DTPREL16_HA", /* name */ | |
1440 | FALSE, /* partial_inplace */ | |
1441 | 0, /* src_mask */ | |
1442 | 0xffff, /* dst_mask */ | |
1443 | FALSE), /* pcrel_offset */ | |
1444 | ||
1445 | /* Like DTPREL16_HI, but next higher group of 16 bits. */ | |
1446 | HOWTO (R_PPC64_DTPREL16_HIGHER, | |
1447 | 32, /* rightshift */ | |
1448 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1449 | 16, /* bitsize */ | |
1450 | FALSE, /* pc_relative */ | |
1451 | 0, /* bitpos */ | |
1452 | complain_overflow_dont, /* complain_on_overflow */ | |
1453 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1454 | "R_PPC64_DTPREL16_HIGHER", /* name */ | |
1455 | FALSE, /* partial_inplace */ | |
1456 | 0, /* src_mask */ | |
1457 | 0xffff, /* dst_mask */ | |
1458 | FALSE), /* pcrel_offset */ | |
1459 | ||
1460 | /* Like DTPREL16_HIGHER, but adjust for low 16 bits. */ | |
1461 | HOWTO (R_PPC64_DTPREL16_HIGHERA, | |
1462 | 32, /* rightshift */ | |
1463 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1464 | 16, /* bitsize */ | |
1465 | FALSE, /* pc_relative */ | |
1466 | 0, /* bitpos */ | |
1467 | complain_overflow_dont, /* complain_on_overflow */ | |
1468 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1469 | "R_PPC64_DTPREL16_HIGHERA", /* name */ | |
1470 | FALSE, /* partial_inplace */ | |
1471 | 0, /* src_mask */ | |
1472 | 0xffff, /* dst_mask */ | |
1473 | FALSE), /* pcrel_offset */ | |
1474 | ||
1475 | /* Like DTPREL16_HIGHER, but next higher group of 16 bits. */ | |
1476 | HOWTO (R_PPC64_DTPREL16_HIGHEST, | |
1477 | 48, /* rightshift */ | |
1478 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1479 | 16, /* bitsize */ | |
1480 | FALSE, /* pc_relative */ | |
1481 | 0, /* bitpos */ | |
1482 | complain_overflow_dont, /* complain_on_overflow */ | |
1483 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1484 | "R_PPC64_DTPREL16_HIGHEST", /* name */ | |
1485 | FALSE, /* partial_inplace */ | |
1486 | 0, /* src_mask */ | |
1487 | 0xffff, /* dst_mask */ | |
1488 | FALSE), /* pcrel_offset */ | |
1489 | ||
1490 | /* Like DTPREL16_HIGHEST, but adjust for low 16 bits. */ | |
1491 | HOWTO (R_PPC64_DTPREL16_HIGHESTA, | |
1492 | 48, /* rightshift */ | |
1493 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1494 | 16, /* bitsize */ | |
1495 | FALSE, /* pc_relative */ | |
1496 | 0, /* bitpos */ | |
1497 | complain_overflow_dont, /* complain_on_overflow */ | |
1498 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1499 | "R_PPC64_DTPREL16_HIGHESTA", /* name */ | |
1500 | FALSE, /* partial_inplace */ | |
1501 | 0, /* src_mask */ | |
1502 | 0xffff, /* dst_mask */ | |
1503 | FALSE), /* pcrel_offset */ | |
1504 | ||
1505 | /* Like DTPREL16, but for insns with a DS field. */ | |
1506 | HOWTO (R_PPC64_DTPREL16_DS, | |
1507 | 0, /* rightshift */ | |
1508 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1509 | 16, /* bitsize */ | |
1510 | FALSE, /* pc_relative */ | |
1511 | 0, /* bitpos */ | |
1512 | complain_overflow_signed, /* complain_on_overflow */ | |
1513 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1514 | "R_PPC64_DTPREL16_DS", /* name */ | |
1515 | FALSE, /* partial_inplace */ | |
1516 | 0, /* src_mask */ | |
1517 | 0xfffc, /* dst_mask */ | |
1518 | FALSE), /* pcrel_offset */ | |
1519 | ||
1520 | /* Like DTPREL16_DS, but no overflow. */ | |
1521 | HOWTO (R_PPC64_DTPREL16_LO_DS, | |
1522 | 0, /* rightshift */ | |
1523 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1524 | 16, /* bitsize */ | |
1525 | FALSE, /* pc_relative */ | |
1526 | 0, /* bitpos */ | |
1527 | complain_overflow_dont, /* complain_on_overflow */ | |
1528 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1529 | "R_PPC64_DTPREL16_LO_DS", /* name */ | |
1530 | FALSE, /* partial_inplace */ | |
1531 | 0, /* src_mask */ | |
1532 | 0xfffc, /* dst_mask */ | |
1533 | FALSE), /* pcrel_offset */ | |
1534 | ||
1535 | /* Computes a tp-relative displacement, the difference between the value of | |
1536 | sym+add and the value of the thread pointer (r13). */ | |
1537 | HOWTO (R_PPC64_TPREL64, | |
1538 | 0, /* rightshift */ | |
1539 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
1540 | 64, /* bitsize */ | |
1541 | FALSE, /* pc_relative */ | |
1542 | 0, /* bitpos */ | |
1543 | complain_overflow_dont, /* complain_on_overflow */ | |
1544 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1545 | "R_PPC64_TPREL64", /* name */ | |
1546 | FALSE, /* partial_inplace */ | |
1547 | 0, /* src_mask */ | |
1548 | ONES (64), /* dst_mask */ | |
1549 | FALSE), /* pcrel_offset */ | |
1550 | ||
1551 | /* A 16 bit tprel reloc. */ | |
1552 | HOWTO (R_PPC64_TPREL16, | |
1553 | 0, /* rightshift */ | |
1554 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1555 | 16, /* bitsize */ | |
1556 | FALSE, /* pc_relative */ | |
1557 | 0, /* bitpos */ | |
1558 | complain_overflow_signed, /* complain_on_overflow */ | |
1559 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1560 | "R_PPC64_TPREL16", /* name */ | |
1561 | FALSE, /* partial_inplace */ | |
1562 | 0, /* src_mask */ | |
1563 | 0xffff, /* dst_mask */ | |
1564 | FALSE), /* pcrel_offset */ | |
1565 | ||
1566 | /* Like TPREL16, but no overflow. */ | |
1567 | HOWTO (R_PPC64_TPREL16_LO, | |
1568 | 0, /* rightshift */ | |
1569 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1570 | 16, /* bitsize */ | |
1571 | FALSE, /* pc_relative */ | |
1572 | 0, /* bitpos */ | |
1573 | complain_overflow_dont, /* complain_on_overflow */ | |
1574 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1575 | "R_PPC64_TPREL16_LO", /* name */ | |
1576 | FALSE, /* partial_inplace */ | |
1577 | 0, /* src_mask */ | |
1578 | 0xffff, /* dst_mask */ | |
1579 | FALSE), /* pcrel_offset */ | |
1580 | ||
1581 | /* Like TPREL16_LO, but next higher group of 16 bits. */ | |
1582 | HOWTO (R_PPC64_TPREL16_HI, | |
1583 | 16, /* rightshift */ | |
1584 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1585 | 16, /* bitsize */ | |
1586 | FALSE, /* pc_relative */ | |
1587 | 0, /* bitpos */ | |
f9c6b907 | 1588 | complain_overflow_signed, /* complain_on_overflow */ |
411e1bfb AM |
1589 | ppc64_elf_unhandled_reloc, /* special_function */ |
1590 | "R_PPC64_TPREL16_HI", /* name */ | |
1591 | FALSE, /* partial_inplace */ | |
1592 | 0, /* src_mask */ | |
1593 | 0xffff, /* dst_mask */ | |
1594 | FALSE), /* pcrel_offset */ | |
1595 | ||
1596 | /* Like TPREL16_HI, but adjust for low 16 bits. */ | |
1597 | HOWTO (R_PPC64_TPREL16_HA, | |
1598 | 16, /* rightshift */ | |
1599 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1600 | 16, /* bitsize */ | |
1601 | FALSE, /* pc_relative */ | |
1602 | 0, /* bitpos */ | |
f9c6b907 | 1603 | complain_overflow_signed, /* complain_on_overflow */ |
411e1bfb AM |
1604 | ppc64_elf_unhandled_reloc, /* special_function */ |
1605 | "R_PPC64_TPREL16_HA", /* name */ | |
1606 | FALSE, /* partial_inplace */ | |
1607 | 0, /* src_mask */ | |
1608 | 0xffff, /* dst_mask */ | |
1609 | FALSE), /* pcrel_offset */ | |
1610 | ||
1611 | /* Like TPREL16_HI, but next higher group of 16 bits. */ | |
1612 | HOWTO (R_PPC64_TPREL16_HIGHER, | |
1613 | 32, /* rightshift */ | |
1614 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1615 | 16, /* bitsize */ | |
1616 | FALSE, /* pc_relative */ | |
1617 | 0, /* bitpos */ | |
1618 | complain_overflow_dont, /* complain_on_overflow */ | |
1619 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1620 | "R_PPC64_TPREL16_HIGHER", /* name */ | |
1621 | FALSE, /* partial_inplace */ | |
1622 | 0, /* src_mask */ | |
1623 | 0xffff, /* dst_mask */ | |
1624 | FALSE), /* pcrel_offset */ | |
1625 | ||
1626 | /* Like TPREL16_HIGHER, but adjust for low 16 bits. */ | |
1627 | HOWTO (R_PPC64_TPREL16_HIGHERA, | |
1628 | 32, /* rightshift */ | |
1629 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1630 | 16, /* bitsize */ | |
1631 | FALSE, /* pc_relative */ | |
1632 | 0, /* bitpos */ | |
1633 | complain_overflow_dont, /* complain_on_overflow */ | |
1634 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1635 | "R_PPC64_TPREL16_HIGHERA", /* name */ | |
1636 | FALSE, /* partial_inplace */ | |
1637 | 0, /* src_mask */ | |
1638 | 0xffff, /* dst_mask */ | |
1639 | FALSE), /* pcrel_offset */ | |
1640 | ||
1641 | /* Like TPREL16_HIGHER, but next higher group of 16 bits. */ | |
1642 | HOWTO (R_PPC64_TPREL16_HIGHEST, | |
1643 | 48, /* rightshift */ | |
1644 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1645 | 16, /* bitsize */ | |
1646 | FALSE, /* pc_relative */ | |
1647 | 0, /* bitpos */ | |
1648 | complain_overflow_dont, /* complain_on_overflow */ | |
1649 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1650 | "R_PPC64_TPREL16_HIGHEST", /* name */ | |
1651 | FALSE, /* partial_inplace */ | |
1652 | 0, /* src_mask */ | |
1653 | 0xffff, /* dst_mask */ | |
1654 | FALSE), /* pcrel_offset */ | |
1655 | ||
1656 | /* Like TPREL16_HIGHEST, but adjust for low 16 bits. */ | |
1657 | HOWTO (R_PPC64_TPREL16_HIGHESTA, | |
1658 | 48, /* rightshift */ | |
1659 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1660 | 16, /* bitsize */ | |
1661 | FALSE, /* pc_relative */ | |
1662 | 0, /* bitpos */ | |
1663 | complain_overflow_dont, /* complain_on_overflow */ | |
1664 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1665 | "R_PPC64_TPREL16_HIGHESTA", /* name */ | |
1666 | FALSE, /* partial_inplace */ | |
1667 | 0, /* src_mask */ | |
1668 | 0xffff, /* dst_mask */ | |
1669 | FALSE), /* pcrel_offset */ | |
1670 | ||
1671 | /* Like TPREL16, but for insns with a DS field. */ | |
1672 | HOWTO (R_PPC64_TPREL16_DS, | |
1673 | 0, /* rightshift */ | |
1674 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1675 | 16, /* bitsize */ | |
1676 | FALSE, /* pc_relative */ | |
1677 | 0, /* bitpos */ | |
1678 | complain_overflow_signed, /* complain_on_overflow */ | |
1679 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1680 | "R_PPC64_TPREL16_DS", /* name */ | |
1681 | FALSE, /* partial_inplace */ | |
1682 | 0, /* src_mask */ | |
1683 | 0xfffc, /* dst_mask */ | |
1684 | FALSE), /* pcrel_offset */ | |
1685 | ||
1686 | /* Like TPREL16_DS, but no overflow. */ | |
1687 | HOWTO (R_PPC64_TPREL16_LO_DS, | |
1688 | 0, /* rightshift */ | |
1689 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1690 | 16, /* bitsize */ | |
1691 | FALSE, /* pc_relative */ | |
1692 | 0, /* bitpos */ | |
1693 | complain_overflow_dont, /* complain_on_overflow */ | |
1694 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1695 | "R_PPC64_TPREL16_LO_DS", /* name */ | |
1696 | FALSE, /* partial_inplace */ | |
1697 | 0, /* src_mask */ | |
1698 | 0xfffc, /* dst_mask */ | |
1699 | FALSE), /* pcrel_offset */ | |
1700 | ||
1701 | /* Allocates two contiguous entries in the GOT to hold a tls_index structure, | |
1702 | with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset | |
1703 | to the first entry relative to the TOC base (r2). */ | |
1704 | HOWTO (R_PPC64_GOT_TLSGD16, | |
1705 | 0, /* rightshift */ | |
1706 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1707 | 16, /* bitsize */ | |
1708 | FALSE, /* pc_relative */ | |
1709 | 0, /* bitpos */ | |
1710 | complain_overflow_signed, /* complain_on_overflow */ | |
1711 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1712 | "R_PPC64_GOT_TLSGD16", /* name */ | |
b34976b6 | 1713 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1714 | 0, /* src_mask */ |
1715 | 0xffff, /* dst_mask */ | |
b34976b6 | 1716 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1717 | |
411e1bfb AM |
1718 | /* Like GOT_TLSGD16, but no overflow. */ |
1719 | HOWTO (R_PPC64_GOT_TLSGD16_LO, | |
5bd4f169 AM |
1720 | 0, /* rightshift */ |
1721 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1722 | 16, /* bitsize */ | |
b34976b6 | 1723 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1724 | 0, /* bitpos */ |
1725 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 1726 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1727 | "R_PPC64_GOT_TLSGD16_LO", /* name */ |
b34976b6 | 1728 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1729 | 0, /* src_mask */ |
1730 | 0xffff, /* dst_mask */ | |
b34976b6 | 1731 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1732 | |
411e1bfb AM |
1733 | /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */ |
1734 | HOWTO (R_PPC64_GOT_TLSGD16_HI, | |
5bd4f169 AM |
1735 | 16, /* rightshift */ |
1736 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1737 | 16, /* bitsize */ | |
b34976b6 | 1738 | FALSE, /* pc_relative */ |
5bd4f169 | 1739 | 0, /* bitpos */ |
f9c6b907 | 1740 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 1741 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1742 | "R_PPC64_GOT_TLSGD16_HI", /* name */ |
b34976b6 | 1743 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1744 | 0, /* src_mask */ |
1745 | 0xffff, /* dst_mask */ | |
b34976b6 | 1746 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1747 | |
411e1bfb AM |
1748 | /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */ |
1749 | HOWTO (R_PPC64_GOT_TLSGD16_HA, | |
5bd4f169 AM |
1750 | 16, /* rightshift */ |
1751 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1752 | 16, /* bitsize */ | |
b34976b6 | 1753 | FALSE, /* pc_relative */ |
5bd4f169 | 1754 | 0, /* bitpos */ |
f9c6b907 | 1755 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 1756 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1757 | "R_PPC64_GOT_TLSGD16_HA", /* name */ |
b34976b6 | 1758 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1759 | 0, /* src_mask */ |
1760 | 0xffff, /* dst_mask */ | |
b34976b6 | 1761 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1762 | |
411e1bfb AM |
1763 | /* Allocates two contiguous entries in the GOT to hold a tls_index structure, |
1764 | with values (sym+add)@dtpmod and zero, and computes the offset to the | |
1765 | first entry relative to the TOC base (r2). */ | |
1766 | HOWTO (R_PPC64_GOT_TLSLD16, | |
5bd4f169 AM |
1767 | 0, /* rightshift */ |
1768 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1769 | 16, /* bitsize */ | |
b34976b6 | 1770 | FALSE, /* pc_relative */ |
5bd4f169 | 1771 | 0, /* bitpos */ |
411e1bfb AM |
1772 | complain_overflow_signed, /* complain_on_overflow */ |
1773 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1774 | "R_PPC64_GOT_TLSLD16", /* name */ | |
b34976b6 | 1775 | FALSE, /* partial_inplace */ |
d006db6c | 1776 | 0, /* src_mask */ |
411e1bfb | 1777 | 0xffff, /* dst_mask */ |
b34976b6 | 1778 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1779 | |
411e1bfb AM |
1780 | /* Like GOT_TLSLD16, but no overflow. */ |
1781 | HOWTO (R_PPC64_GOT_TLSLD16_LO, | |
5bd4f169 AM |
1782 | 0, /* rightshift */ |
1783 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1784 | 16, /* bitsize */ | |
b34976b6 | 1785 | FALSE, /* pc_relative */ |
5bd4f169 | 1786 | 0, /* bitpos */ |
411e1bfb AM |
1787 | complain_overflow_dont, /* complain_on_overflow */ |
1788 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1789 | "R_PPC64_GOT_TLSLD16_LO", /* name */ | |
b34976b6 | 1790 | FALSE, /* partial_inplace */ |
d006db6c | 1791 | 0, /* src_mask */ |
411e1bfb | 1792 | 0xffff, /* dst_mask */ |
b34976b6 | 1793 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1794 | |
411e1bfb AM |
1795 | /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */ |
1796 | HOWTO (R_PPC64_GOT_TLSLD16_HI, | |
1797 | 16, /* rightshift */ | |
5bd4f169 AM |
1798 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1799 | 16, /* bitsize */ | |
b34976b6 | 1800 | FALSE, /* pc_relative */ |
5bd4f169 | 1801 | 0, /* bitpos */ |
f9c6b907 | 1802 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 1803 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1804 | "R_PPC64_GOT_TLSLD16_HI", /* name */ |
b34976b6 | 1805 | FALSE, /* partial_inplace */ |
d006db6c | 1806 | 0, /* src_mask */ |
411e1bfb | 1807 | 0xffff, /* dst_mask */ |
b34976b6 | 1808 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1809 | |
411e1bfb AM |
1810 | /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */ |
1811 | HOWTO (R_PPC64_GOT_TLSLD16_HA, | |
1812 | 16, /* rightshift */ | |
5bd4f169 AM |
1813 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1814 | 16, /* bitsize */ | |
b34976b6 | 1815 | FALSE, /* pc_relative */ |
5bd4f169 | 1816 | 0, /* bitpos */ |
f9c6b907 | 1817 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 1818 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1819 | "R_PPC64_GOT_TLSLD16_HA", /* name */ |
b34976b6 | 1820 | FALSE, /* partial_inplace */ |
d006db6c | 1821 | 0, /* src_mask */ |
411e1bfb | 1822 | 0xffff, /* dst_mask */ |
b34976b6 | 1823 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1824 | |
411e1bfb AM |
1825 | /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes |
1826 | the offset to the entry relative to the TOC base (r2). */ | |
1827 | HOWTO (R_PPC64_GOT_DTPREL16_DS, | |
5bd4f169 AM |
1828 | 0, /* rightshift */ |
1829 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1830 | 16, /* bitsize */ | |
b34976b6 | 1831 | FALSE, /* pc_relative */ |
5bd4f169 | 1832 | 0, /* bitpos */ |
411e1bfb | 1833 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 1834 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1835 | "R_PPC64_GOT_DTPREL16_DS", /* name */ |
b34976b6 | 1836 | FALSE, /* partial_inplace */ |
d006db6c | 1837 | 0, /* src_mask */ |
5bd4f169 | 1838 | 0xfffc, /* dst_mask */ |
b34976b6 | 1839 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1840 | |
411e1bfb AM |
1841 | /* Like GOT_DTPREL16_DS, but no overflow. */ |
1842 | HOWTO (R_PPC64_GOT_DTPREL16_LO_DS, | |
5bd4f169 | 1843 | 0, /* rightshift */ |
c061c2d8 AM |
1844 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1845 | 16, /* bitsize */ | |
b34976b6 | 1846 | FALSE, /* pc_relative */ |
5bd4f169 | 1847 | 0, /* bitpos */ |
411e1bfb AM |
1848 | complain_overflow_dont, /* complain_on_overflow */ |
1849 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1850 | "R_PPC64_GOT_DTPREL16_LO_DS", /* name */ | |
b34976b6 | 1851 | FALSE, /* partial_inplace */ |
d006db6c | 1852 | 0, /* src_mask */ |
c061c2d8 | 1853 | 0xfffc, /* dst_mask */ |
b34976b6 | 1854 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1855 | |
411e1bfb AM |
1856 | /* Like GOT_DTPREL16_LO_DS, but next higher group of 16 bits. */ |
1857 | HOWTO (R_PPC64_GOT_DTPREL16_HI, | |
1858 | 16, /* rightshift */ | |
5bd4f169 AM |
1859 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1860 | 16, /* bitsize */ | |
b34976b6 | 1861 | FALSE, /* pc_relative */ |
5bd4f169 | 1862 | 0, /* bitpos */ |
f9c6b907 | 1863 | complain_overflow_signed, /* complain_on_overflow */ |
411e1bfb AM |
1864 | ppc64_elf_unhandled_reloc, /* special_function */ |
1865 | "R_PPC64_GOT_DTPREL16_HI", /* name */ | |
b34976b6 | 1866 | FALSE, /* partial_inplace */ |
d006db6c | 1867 | 0, /* src_mask */ |
411e1bfb | 1868 | 0xffff, /* dst_mask */ |
b34976b6 | 1869 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1870 | |
411e1bfb AM |
1871 | /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */ |
1872 | HOWTO (R_PPC64_GOT_DTPREL16_HA, | |
1873 | 16, /* rightshift */ | |
1874 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1875 | 16, /* bitsize */ | |
1876 | FALSE, /* pc_relative */ | |
1877 | 0, /* bitpos */ | |
f9c6b907 | 1878 | complain_overflow_signed, /* complain_on_overflow */ |
411e1bfb AM |
1879 | ppc64_elf_unhandled_reloc, /* special_function */ |
1880 | "R_PPC64_GOT_DTPREL16_HA", /* name */ | |
1881 | FALSE, /* partial_inplace */ | |
1882 | 0, /* src_mask */ | |
1883 | 0xffff, /* dst_mask */ | |
1884 | FALSE), /* pcrel_offset */ | |
1885 | ||
1886 | /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the | |
1887 | offset to the entry relative to the TOC base (r2). */ | |
1888 | HOWTO (R_PPC64_GOT_TPREL16_DS, | |
5bd4f169 AM |
1889 | 0, /* rightshift */ |
1890 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1891 | 16, /* bitsize */ | |
b34976b6 | 1892 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1893 | 0, /* bitpos */ |
1894 | complain_overflow_signed, /* complain_on_overflow */ | |
411e1bfb AM |
1895 | ppc64_elf_unhandled_reloc, /* special_function */ |
1896 | "R_PPC64_GOT_TPREL16_DS", /* name */ | |
b34976b6 | 1897 | FALSE, /* partial_inplace */ |
d006db6c | 1898 | 0, /* src_mask */ |
ad8e1ba5 | 1899 | 0xfffc, /* dst_mask */ |
b34976b6 | 1900 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1901 | |
411e1bfb AM |
1902 | /* Like GOT_TPREL16_DS, but no overflow. */ |
1903 | HOWTO (R_PPC64_GOT_TPREL16_LO_DS, | |
5bd4f169 AM |
1904 | 0, /* rightshift */ |
1905 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1906 | 16, /* bitsize */ | |
b34976b6 | 1907 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1908 | 0, /* bitpos */ |
1909 | complain_overflow_dont, /* complain_on_overflow */ | |
411e1bfb AM |
1910 | ppc64_elf_unhandled_reloc, /* special_function */ |
1911 | "R_PPC64_GOT_TPREL16_LO_DS", /* name */ | |
b34976b6 | 1912 | FALSE, /* partial_inplace */ |
d006db6c | 1913 | 0, /* src_mask */ |
ad8e1ba5 | 1914 | 0xfffc, /* dst_mask */ |
b34976b6 | 1915 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1916 | |
411e1bfb AM |
1917 | /* Like GOT_TPREL16_LO_DS, but next higher group of 16 bits. */ |
1918 | HOWTO (R_PPC64_GOT_TPREL16_HI, | |
1919 | 16, /* rightshift */ | |
5bd4f169 AM |
1920 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1921 | 16, /* bitsize */ | |
b34976b6 | 1922 | FALSE, /* pc_relative */ |
5bd4f169 | 1923 | 0, /* bitpos */ |
f9c6b907 | 1924 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 1925 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1926 | "R_PPC64_GOT_TPREL16_HI", /* name */ |
b34976b6 | 1927 | FALSE, /* partial_inplace */ |
d006db6c | 1928 | 0, /* src_mask */ |
411e1bfb | 1929 | 0xffff, /* dst_mask */ |
b34976b6 | 1930 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1931 | |
411e1bfb AM |
1932 | /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */ |
1933 | HOWTO (R_PPC64_GOT_TPREL16_HA, | |
1934 | 16, /* rightshift */ | |
5bd4f169 AM |
1935 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1936 | 16, /* bitsize */ | |
b34976b6 | 1937 | FALSE, /* pc_relative */ |
5bd4f169 | 1938 | 0, /* bitpos */ |
f9c6b907 | 1939 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 1940 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1941 | "R_PPC64_GOT_TPREL16_HA", /* name */ |
b34976b6 | 1942 | FALSE, /* partial_inplace */ |
d006db6c | 1943 | 0, /* src_mask */ |
411e1bfb | 1944 | 0xffff, /* dst_mask */ |
b34976b6 | 1945 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1946 | |
25f23106 AM |
1947 | HOWTO (R_PPC64_JMP_IREL, /* type */ |
1948 | 0, /* rightshift */ | |
1949 | 0, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
1950 | 0, /* bitsize */ | |
1951 | FALSE, /* pc_relative */ | |
1952 | 0, /* bitpos */ | |
1953 | complain_overflow_dont, /* complain_on_overflow */ | |
1954 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1955 | "R_PPC64_JMP_IREL", /* name */ | |
1956 | FALSE, /* partial_inplace */ | |
1957 | 0, /* src_mask */ | |
1958 | 0, /* dst_mask */ | |
1959 | FALSE), /* pcrel_offset */ | |
1960 | ||
e054468f AM |
1961 | HOWTO (R_PPC64_IRELATIVE, /* type */ |
1962 | 0, /* rightshift */ | |
1963 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
1964 | 64, /* bitsize */ | |
1965 | FALSE, /* pc_relative */ | |
1966 | 0, /* bitpos */ | |
1967 | complain_overflow_dont, /* complain_on_overflow */ | |
1968 | bfd_elf_generic_reloc, /* special_function */ | |
1969 | "R_PPC64_IRELATIVE", /* name */ | |
1970 | FALSE, /* partial_inplace */ | |
1971 | 0, /* src_mask */ | |
1972 | ONES (64), /* dst_mask */ | |
1973 | FALSE), /* pcrel_offset */ | |
1974 | ||
25f23106 AM |
1975 | /* A 16 bit relative relocation. */ |
1976 | HOWTO (R_PPC64_REL16, /* type */ | |
1977 | 0, /* rightshift */ | |
1978 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1979 | 16, /* bitsize */ | |
1980 | TRUE, /* pc_relative */ | |
1981 | 0, /* bitpos */ | |
b80eed39 | 1982 | complain_overflow_signed, /* complain_on_overflow */ |
25f23106 AM |
1983 | bfd_elf_generic_reloc, /* special_function */ |
1984 | "R_PPC64_REL16", /* name */ | |
1985 | FALSE, /* partial_inplace */ | |
1986 | 0, /* src_mask */ | |
1987 | 0xffff, /* dst_mask */ | |
1988 | TRUE), /* pcrel_offset */ | |
1989 | ||
1990 | /* A 16 bit relative relocation without overflow. */ | |
1991 | HOWTO (R_PPC64_REL16_LO, /* type */ | |
1992 | 0, /* rightshift */ | |
1993 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1994 | 16, /* bitsize */ | |
1995 | TRUE, /* pc_relative */ | |
1996 | 0, /* bitpos */ | |
1997 | complain_overflow_dont,/* complain_on_overflow */ | |
1998 | bfd_elf_generic_reloc, /* special_function */ | |
1999 | "R_PPC64_REL16_LO", /* name */ | |
2000 | FALSE, /* partial_inplace */ | |
2001 | 0, /* src_mask */ | |
2002 | 0xffff, /* dst_mask */ | |
2003 | TRUE), /* pcrel_offset */ | |
2004 | ||
2005 | /* The high order 16 bits of a relative address. */ | |
2006 | HOWTO (R_PPC64_REL16_HI, /* type */ | |
2007 | 16, /* rightshift */ | |
2008 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
2009 | 16, /* bitsize */ | |
2010 | TRUE, /* pc_relative */ | |
2011 | 0, /* bitpos */ | |
f9c6b907 | 2012 | complain_overflow_signed, /* complain_on_overflow */ |
25f23106 AM |
2013 | bfd_elf_generic_reloc, /* special_function */ |
2014 | "R_PPC64_REL16_HI", /* name */ | |
2015 | FALSE, /* partial_inplace */ | |
2016 | 0, /* src_mask */ | |
2017 | 0xffff, /* dst_mask */ | |
2018 | TRUE), /* pcrel_offset */ | |
2019 | ||
2020 | /* The high order 16 bits of a relative address, plus 1 if the contents of | |
2021 | the low 16 bits, treated as a signed number, is negative. */ | |
2022 | HOWTO (R_PPC64_REL16_HA, /* type */ | |
2023 | 16, /* rightshift */ | |
2024 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
2025 | 16, /* bitsize */ | |
2026 | TRUE, /* pc_relative */ | |
2027 | 0, /* bitpos */ | |
f9c6b907 | 2028 | complain_overflow_signed, /* complain_on_overflow */ |
25f23106 AM |
2029 | ppc64_elf_ha_reloc, /* special_function */ |
2030 | "R_PPC64_REL16_HA", /* name */ | |
2031 | FALSE, /* partial_inplace */ | |
2032 | 0, /* src_mask */ | |
2033 | 0xffff, /* dst_mask */ | |
2034 | TRUE), /* pcrel_offset */ | |
2035 | ||
a680de9a PB |
2036 | /* Like R_PPC64_REL16_HA but for split field in addpcis. */ |
2037 | HOWTO (R_PPC64_REL16DX_HA, /* type */ | |
2038 | 16, /* rightshift */ | |
2039 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
2040 | 16, /* bitsize */ | |
2041 | TRUE, /* pc_relative */ | |
2042 | 0, /* bitpos */ | |
2043 | complain_overflow_signed, /* complain_on_overflow */ | |
2044 | ppc64_elf_ha_reloc, /* special_function */ | |
2045 | "R_PPC64_REL16DX_HA", /* name */ | |
2046 | FALSE, /* partial_inplace */ | |
2047 | 0, /* src_mask */ | |
2048 | 0x1fffc1, /* dst_mask */ | |
2049 | TRUE), /* pcrel_offset */ | |
2050 | ||
7ba71655 AM |
2051 | /* A split-field reloc for addpcis, non-relative (gas internal use only). */ |
2052 | HOWTO (R_PPC64_16DX_HA, /* type */ | |
2053 | 16, /* rightshift */ | |
2054 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
2055 | 16, /* bitsize */ | |
2056 | FALSE, /* pc_relative */ | |
2057 | 0, /* bitpos */ | |
2058 | complain_overflow_signed, /* complain_on_overflow */ | |
2059 | ppc64_elf_ha_reloc, /* special_function */ | |
2060 | "R_PPC64_16DX_HA", /* name */ | |
2061 | FALSE, /* partial_inplace */ | |
2062 | 0, /* src_mask */ | |
2063 | 0x1fffc1, /* dst_mask */ | |
2064 | FALSE), /* pcrel_offset */ | |
2065 | ||
f9c6b907 AM |
2066 | /* Like R_PPC64_ADDR16_HI, but no overflow. */ |
2067 | HOWTO (R_PPC64_ADDR16_HIGH, /* type */ | |
2068 | 16, /* rightshift */ | |
2069 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
2070 | 16, /* bitsize */ | |
2071 | FALSE, /* pc_relative */ | |
2072 | 0, /* bitpos */ | |
2073 | complain_overflow_dont, /* complain_on_overflow */ | |
2074 | bfd_elf_generic_reloc, /* special_function */ | |
2075 | "R_PPC64_ADDR16_HIGH", /* name */ | |
2076 | FALSE, /* partial_inplace */ | |
2077 | 0, /* src_mask */ | |
2078 | 0xffff, /* dst_mask */ | |
2079 | FALSE), /* pcrel_offset */ | |
2080 | ||
2081 | /* Like R_PPC64_ADDR16_HA, but no overflow. */ | |
2082 | HOWTO (R_PPC64_ADDR16_HIGHA, /* type */ | |
2083 | 16, /* rightshift */ | |
2084 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
2085 | 16, /* bitsize */ | |
2086 | FALSE, /* pc_relative */ | |
2087 | 0, /* bitpos */ | |
2088 | complain_overflow_dont, /* complain_on_overflow */ | |
2089 | ppc64_elf_ha_reloc, /* special_function */ | |
2090 | "R_PPC64_ADDR16_HIGHA", /* name */ | |
2091 | FALSE, /* partial_inplace */ | |
2092 | 0, /* src_mask */ | |
2093 | 0xffff, /* dst_mask */ | |
2094 | FALSE), /* pcrel_offset */ | |
2095 | ||
2096 | /* Like R_PPC64_DTPREL16_HI, but no overflow. */ | |
2097 | HOWTO (R_PPC64_DTPREL16_HIGH, | |
2098 | 16, /* rightshift */ | |
2099 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
2100 | 16, /* bitsize */ | |
2101 | FALSE, /* pc_relative */ | |
2102 | 0, /* bitpos */ | |
2103 | complain_overflow_dont, /* complain_on_overflow */ | |
2104 | ppc64_elf_unhandled_reloc, /* special_function */ | |
2105 | "R_PPC64_DTPREL16_HIGH", /* name */ | |
2106 | FALSE, /* partial_inplace */ | |
2107 | 0, /* src_mask */ | |
2108 | 0xffff, /* dst_mask */ | |
2109 | FALSE), /* pcrel_offset */ | |
2110 | ||
2111 | /* Like R_PPC64_DTPREL16_HA, but no overflow. */ | |
2112 | HOWTO (R_PPC64_DTPREL16_HIGHA, | |
2113 | 16, /* rightshift */ | |
2114 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
2115 | 16, /* bitsize */ | |
2116 | FALSE, /* pc_relative */ | |
2117 | 0, /* bitpos */ | |
2118 | complain_overflow_dont, /* complain_on_overflow */ | |
2119 | ppc64_elf_unhandled_reloc, /* special_function */ | |
2120 | "R_PPC64_DTPREL16_HIGHA", /* name */ | |
2121 | FALSE, /* partial_inplace */ | |
2122 | 0, /* src_mask */ | |
2123 | 0xffff, /* dst_mask */ | |
2124 | FALSE), /* pcrel_offset */ | |
2125 | ||
2126 | /* Like R_PPC64_TPREL16_HI, but no overflow. */ | |
2127 | HOWTO (R_PPC64_TPREL16_HIGH, | |
2128 | 16, /* rightshift */ | |
2129 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
2130 | 16, /* bitsize */ | |
2131 | FALSE, /* pc_relative */ | |
2132 | 0, /* bitpos */ | |
2133 | complain_overflow_dont, /* complain_on_overflow */ | |
2134 | ppc64_elf_unhandled_reloc, /* special_function */ | |
2135 | "R_PPC64_TPREL16_HIGH", /* name */ | |
2136 | FALSE, /* partial_inplace */ | |
2137 | 0, /* src_mask */ | |
2138 | 0xffff, /* dst_mask */ | |
2139 | FALSE), /* pcrel_offset */ | |
2140 | ||
2141 | /* Like R_PPC64_TPREL16_HA, but no overflow. */ | |
2142 | HOWTO (R_PPC64_TPREL16_HIGHA, | |
2143 | 16, /* rightshift */ | |
2144 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
2145 | 16, /* bitsize */ | |
2146 | FALSE, /* pc_relative */ | |
2147 | 0, /* bitpos */ | |
2148 | complain_overflow_dont, /* complain_on_overflow */ | |
2149 | ppc64_elf_unhandled_reloc, /* special_function */ | |
2150 | "R_PPC64_TPREL16_HIGHA", /* name */ | |
2151 | FALSE, /* partial_inplace */ | |
2152 | 0, /* src_mask */ | |
2153 | 0xffff, /* dst_mask */ | |
2154 | FALSE), /* pcrel_offset */ | |
2155 | ||
006589cf AM |
2156 | /* Marker reloc on ELFv2 large-model function entry. */ |
2157 | HOWTO (R_PPC64_ENTRY, | |
2158 | 0, /* rightshift */ | |
2159 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
2160 | 32, /* bitsize */ | |
2161 | FALSE, /* pc_relative */ | |
2162 | 0, /* bitpos */ | |
2163 | complain_overflow_dont, /* complain_on_overflow */ | |
2164 | bfd_elf_generic_reloc, /* special_function */ | |
2165 | "R_PPC64_ENTRY", /* name */ | |
2166 | FALSE, /* partial_inplace */ | |
2167 | 0, /* src_mask */ | |
2168 | 0, /* dst_mask */ | |
2169 | FALSE), /* pcrel_offset */ | |
2170 | ||
45965137 AM |
2171 | /* Like ADDR64, but use local entry point of function. */ |
2172 | HOWTO (R_PPC64_ADDR64_LOCAL, /* type */ | |
2173 | 0, /* rightshift */ | |
2174 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
2175 | 64, /* bitsize */ | |
2176 | FALSE, /* pc_relative */ | |
2177 | 0, /* bitpos */ | |
2178 | complain_overflow_dont, /* complain_on_overflow */ | |
2179 | bfd_elf_generic_reloc, /* special_function */ | |
2180 | "R_PPC64_ADDR64_LOCAL", /* name */ | |
2181 | FALSE, /* partial_inplace */ | |
2182 | 0, /* src_mask */ | |
2183 | ONES (64), /* dst_mask */ | |
2184 | FALSE), /* pcrel_offset */ | |
2185 | ||
5bd4f169 AM |
2186 | /* GNU extension to record C++ vtable hierarchy. */ |
2187 | HOWTO (R_PPC64_GNU_VTINHERIT, /* type */ | |
2188 | 0, /* rightshift */ | |
2189 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
2190 | 0, /* bitsize */ | |
b34976b6 | 2191 | FALSE, /* pc_relative */ |
5bd4f169 AM |
2192 | 0, /* bitpos */ |
2193 | complain_overflow_dont, /* complain_on_overflow */ | |
2194 | NULL, /* special_function */ | |
2195 | "R_PPC64_GNU_VTINHERIT", /* name */ | |
b34976b6 | 2196 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
2197 | 0, /* src_mask */ |
2198 | 0, /* dst_mask */ | |
b34976b6 | 2199 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
2200 | |
2201 | /* GNU extension to record C++ vtable member usage. */ | |
2202 | HOWTO (R_PPC64_GNU_VTENTRY, /* type */ | |
2203 | 0, /* rightshift */ | |
2204 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
2205 | 0, /* bitsize */ | |
b34976b6 | 2206 | FALSE, /* pc_relative */ |
5bd4f169 AM |
2207 | 0, /* bitpos */ |
2208 | complain_overflow_dont, /* complain_on_overflow */ | |
2209 | NULL, /* special_function */ | |
2210 | "R_PPC64_GNU_VTENTRY", /* name */ | |
b34976b6 | 2211 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
2212 | 0, /* src_mask */ |
2213 | 0, /* dst_mask */ | |
b34976b6 | 2214 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
2215 | }; |
2216 | ||
2217 | \f | |
2218 | /* Initialize the ppc64_elf_howto_table, so that linear accesses can | |
2219 | be done. */ | |
2220 | ||
2221 | static void | |
4ce794b7 | 2222 | ppc_howto_init (void) |
5bd4f169 AM |
2223 | { |
2224 | unsigned int i, type; | |
2225 | ||
a4b6fadd | 2226 | for (i = 0; i < ARRAY_SIZE (ppc64_elf_howto_raw); i++) |
5bd4f169 AM |
2227 | { |
2228 | type = ppc64_elf_howto_raw[i].type; | |
a4b6fadd | 2229 | BFD_ASSERT (type < ARRAY_SIZE (ppc64_elf_howto_table)); |
5bd4f169 AM |
2230 | ppc64_elf_howto_table[type] = &ppc64_elf_howto_raw[i]; |
2231 | } | |
2232 | } | |
2233 | ||
2234 | static reloc_howto_type * | |
f3185997 | 2235 | ppc64_elf_reloc_type_lookup (bfd *abfd, |
4ce794b7 | 2236 | bfd_reloc_code_real_type code) |
5bd4f169 | 2237 | { |
411e1bfb | 2238 | enum elf_ppc64_reloc_type r = R_PPC64_NONE; |
5bd4f169 AM |
2239 | |
2240 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) | |
2241 | /* Initialize howto table if needed. */ | |
2242 | ppc_howto_init (); | |
2243 | ||
4ce794b7 | 2244 | switch (code) |
5bd4f169 AM |
2245 | { |
2246 | default: | |
f3185997 | 2247 | /* xgettext:c-format */ |
e8f5af78 | 2248 | _bfd_error_handler (_("%pB: unsupported relocation type %#x"), abfd, (int) code); |
f3185997 | 2249 | bfd_set_error (bfd_error_bad_value); |
4ce794b7 | 2250 | return NULL; |
5bd4f169 | 2251 | |
411e1bfb AM |
2252 | case BFD_RELOC_NONE: r = R_PPC64_NONE; |
2253 | break; | |
2254 | case BFD_RELOC_32: r = R_PPC64_ADDR32; | |
2255 | break; | |
2256 | case BFD_RELOC_PPC_BA26: r = R_PPC64_ADDR24; | |
2257 | break; | |
2258 | case BFD_RELOC_16: r = R_PPC64_ADDR16; | |
2259 | break; | |
2260 | case BFD_RELOC_LO16: r = R_PPC64_ADDR16_LO; | |
2261 | break; | |
2262 | case BFD_RELOC_HI16: r = R_PPC64_ADDR16_HI; | |
2263 | break; | |
f9c6b907 AM |
2264 | case BFD_RELOC_PPC64_ADDR16_HIGH: r = R_PPC64_ADDR16_HIGH; |
2265 | break; | |
411e1bfb | 2266 | case BFD_RELOC_HI16_S: r = R_PPC64_ADDR16_HA; |
5bd4f169 | 2267 | break; |
f9c6b907 AM |
2268 | case BFD_RELOC_PPC64_ADDR16_HIGHA: r = R_PPC64_ADDR16_HIGHA; |
2269 | break; | |
411e1bfb | 2270 | case BFD_RELOC_PPC_BA16: r = R_PPC64_ADDR14; |
5bd4f169 | 2271 | break; |
411e1bfb | 2272 | case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC64_ADDR14_BRTAKEN; |
5bd4f169 | 2273 | break; |
411e1bfb | 2274 | case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC64_ADDR14_BRNTAKEN; |
5bd4f169 | 2275 | break; |
411e1bfb | 2276 | case BFD_RELOC_PPC_B26: r = R_PPC64_REL24; |
5bd4f169 | 2277 | break; |
411e1bfb | 2278 | case BFD_RELOC_PPC_B16: r = R_PPC64_REL14; |
5bd4f169 | 2279 | break; |
411e1bfb | 2280 | case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC64_REL14_BRTAKEN; |
5bd4f169 | 2281 | break; |
411e1bfb | 2282 | case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC64_REL14_BRNTAKEN; |
5bd4f169 | 2283 | break; |
411e1bfb | 2284 | case BFD_RELOC_16_GOTOFF: r = R_PPC64_GOT16; |
5bd4f169 | 2285 | break; |
411e1bfb | 2286 | case BFD_RELOC_LO16_GOTOFF: r = R_PPC64_GOT16_LO; |
5bd4f169 | 2287 | break; |
411e1bfb | 2288 | case BFD_RELOC_HI16_GOTOFF: r = R_PPC64_GOT16_HI; |
5bd4f169 | 2289 | break; |
411e1bfb | 2290 | case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC64_GOT16_HA; |
5bd4f169 | 2291 | break; |
411e1bfb | 2292 | case BFD_RELOC_PPC_COPY: r = R_PPC64_COPY; |
5bd4f169 | 2293 | break; |
411e1bfb | 2294 | case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC64_GLOB_DAT; |
5bd4f169 | 2295 | break; |
411e1bfb | 2296 | case BFD_RELOC_32_PCREL: r = R_PPC64_REL32; |
5bd4f169 | 2297 | break; |
411e1bfb | 2298 | case BFD_RELOC_32_PLTOFF: r = R_PPC64_PLT32; |
5bd4f169 | 2299 | break; |
411e1bfb | 2300 | case BFD_RELOC_32_PLT_PCREL: r = R_PPC64_PLTREL32; |
5bd4f169 | 2301 | break; |
411e1bfb | 2302 | case BFD_RELOC_LO16_PLTOFF: r = R_PPC64_PLT16_LO; |
5bd4f169 | 2303 | break; |
411e1bfb | 2304 | case BFD_RELOC_HI16_PLTOFF: r = R_PPC64_PLT16_HI; |
5bd4f169 | 2305 | break; |
411e1bfb | 2306 | case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC64_PLT16_HA; |
5bd4f169 | 2307 | break; |
411e1bfb | 2308 | case BFD_RELOC_16_BASEREL: r = R_PPC64_SECTOFF; |
5bd4f169 | 2309 | break; |
411e1bfb | 2310 | case BFD_RELOC_LO16_BASEREL: r = R_PPC64_SECTOFF_LO; |
5bd4f169 | 2311 | break; |
411e1bfb | 2312 | case BFD_RELOC_HI16_BASEREL: r = R_PPC64_SECTOFF_HI; |
5bd4f169 | 2313 | break; |
411e1bfb | 2314 | case BFD_RELOC_HI16_S_BASEREL: r = R_PPC64_SECTOFF_HA; |
5bd4f169 | 2315 | break; |
411e1bfb | 2316 | case BFD_RELOC_CTOR: r = R_PPC64_ADDR64; |
5bd4f169 | 2317 | break; |
411e1bfb | 2318 | case BFD_RELOC_64: r = R_PPC64_ADDR64; |
5bd4f169 | 2319 | break; |
411e1bfb | 2320 | case BFD_RELOC_PPC64_HIGHER: r = R_PPC64_ADDR16_HIGHER; |
5bd4f169 | 2321 | break; |
411e1bfb | 2322 | case BFD_RELOC_PPC64_HIGHER_S: r = R_PPC64_ADDR16_HIGHERA; |
5bd4f169 | 2323 | break; |
411e1bfb | 2324 | case BFD_RELOC_PPC64_HIGHEST: r = R_PPC64_ADDR16_HIGHEST; |
5bd4f169 | 2325 | break; |
411e1bfb | 2326 | case BFD_RELOC_PPC64_HIGHEST_S: r = R_PPC64_ADDR16_HIGHESTA; |
5bd4f169 | 2327 | break; |
411e1bfb | 2328 | case BFD_RELOC_64_PCREL: r = R_PPC64_REL64; |
5bd4f169 | 2329 | break; |
411e1bfb | 2330 | case BFD_RELOC_64_PLTOFF: r = R_PPC64_PLT64; |
5bd4f169 | 2331 | break; |
411e1bfb | 2332 | case BFD_RELOC_64_PLT_PCREL: r = R_PPC64_PLTREL64; |
5bd4f169 | 2333 | break; |
411e1bfb | 2334 | case BFD_RELOC_PPC_TOC16: r = R_PPC64_TOC16; |
5bd4f169 | 2335 | break; |
411e1bfb | 2336 | case BFD_RELOC_PPC64_TOC16_LO: r = R_PPC64_TOC16_LO; |
5bd4f169 | 2337 | break; |
411e1bfb | 2338 | case BFD_RELOC_PPC64_TOC16_HI: r = R_PPC64_TOC16_HI; |
5bd4f169 | 2339 | break; |
411e1bfb | 2340 | case BFD_RELOC_PPC64_TOC16_HA: r = R_PPC64_TOC16_HA; |
5bd4f169 | 2341 | break; |
411e1bfb | 2342 | case BFD_RELOC_PPC64_TOC: r = R_PPC64_TOC; |
5bd4f169 | 2343 | break; |
411e1bfb | 2344 | case BFD_RELOC_PPC64_PLTGOT16: r = R_PPC64_PLTGOT16; |
5bd4f169 | 2345 | break; |
411e1bfb | 2346 | case BFD_RELOC_PPC64_PLTGOT16_LO: r = R_PPC64_PLTGOT16_LO; |
5bd4f169 | 2347 | break; |
411e1bfb | 2348 | case BFD_RELOC_PPC64_PLTGOT16_HI: r = R_PPC64_PLTGOT16_HI; |
5bd4f169 | 2349 | break; |
411e1bfb | 2350 | case BFD_RELOC_PPC64_PLTGOT16_HA: r = R_PPC64_PLTGOT16_HA; |
5bd4f169 | 2351 | break; |
411e1bfb | 2352 | case BFD_RELOC_PPC64_ADDR16_DS: r = R_PPC64_ADDR16_DS; |
5bd4f169 | 2353 | break; |
411e1bfb | 2354 | case BFD_RELOC_PPC64_ADDR16_LO_DS: r = R_PPC64_ADDR16_LO_DS; |
5bd4f169 | 2355 | break; |
411e1bfb | 2356 | case BFD_RELOC_PPC64_GOT16_DS: r = R_PPC64_GOT16_DS; |
5bd4f169 | 2357 | break; |
411e1bfb | 2358 | case BFD_RELOC_PPC64_GOT16_LO_DS: r = R_PPC64_GOT16_LO_DS; |
5bd4f169 | 2359 | break; |
411e1bfb | 2360 | case BFD_RELOC_PPC64_PLT16_LO_DS: r = R_PPC64_PLT16_LO_DS; |
5bd4f169 | 2361 | break; |
411e1bfb | 2362 | case BFD_RELOC_PPC64_SECTOFF_DS: r = R_PPC64_SECTOFF_DS; |
5bd4f169 | 2363 | break; |
411e1bfb | 2364 | case BFD_RELOC_PPC64_SECTOFF_LO_DS: r = R_PPC64_SECTOFF_LO_DS; |
5bd4f169 | 2365 | break; |
411e1bfb | 2366 | case BFD_RELOC_PPC64_TOC16_DS: r = R_PPC64_TOC16_DS; |
5bd4f169 | 2367 | break; |
411e1bfb | 2368 | case BFD_RELOC_PPC64_TOC16_LO_DS: r = R_PPC64_TOC16_LO_DS; |
5bd4f169 | 2369 | break; |
411e1bfb | 2370 | case BFD_RELOC_PPC64_PLTGOT16_DS: r = R_PPC64_PLTGOT16_DS; |
5bd4f169 | 2371 | break; |
411e1bfb | 2372 | case BFD_RELOC_PPC64_PLTGOT16_LO_DS: r = R_PPC64_PLTGOT16_LO_DS; |
5bd4f169 | 2373 | break; |
411e1bfb | 2374 | case BFD_RELOC_PPC_TLS: r = R_PPC64_TLS; |
5bd4f169 | 2375 | break; |
727fc41e AM |
2376 | case BFD_RELOC_PPC_TLSGD: r = R_PPC64_TLSGD; |
2377 | break; | |
2378 | case BFD_RELOC_PPC_TLSLD: r = R_PPC64_TLSLD; | |
2379 | break; | |
411e1bfb | 2380 | case BFD_RELOC_PPC_DTPMOD: r = R_PPC64_DTPMOD64; |
5bd4f169 | 2381 | break; |
411e1bfb | 2382 | case BFD_RELOC_PPC_TPREL16: r = R_PPC64_TPREL16; |
5bd4f169 | 2383 | break; |
411e1bfb | 2384 | case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC64_TPREL16_LO; |
5bd4f169 | 2385 | break; |
411e1bfb | 2386 | case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC64_TPREL16_HI; |
5bd4f169 | 2387 | break; |
f9c6b907 AM |
2388 | case BFD_RELOC_PPC64_TPREL16_HIGH: r = R_PPC64_TPREL16_HIGH; |
2389 | break; | |
411e1bfb | 2390 | case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC64_TPREL16_HA; |
5bd4f169 | 2391 | break; |
f9c6b907 AM |
2392 | case BFD_RELOC_PPC64_TPREL16_HIGHA: r = R_PPC64_TPREL16_HIGHA; |
2393 | break; | |
411e1bfb | 2394 | case BFD_RELOC_PPC_TPREL: r = R_PPC64_TPREL64; |
5bd4f169 | 2395 | break; |
411e1bfb AM |
2396 | case BFD_RELOC_PPC_DTPREL16: r = R_PPC64_DTPREL16; |
2397 | break; | |
2398 | case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC64_DTPREL16_LO; | |
2399 | break; | |
2400 | case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC64_DTPREL16_HI; | |
2401 | break; | |
f9c6b907 AM |
2402 | case BFD_RELOC_PPC64_DTPREL16_HIGH: r = R_PPC64_DTPREL16_HIGH; |
2403 | break; | |
411e1bfb AM |
2404 | case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC64_DTPREL16_HA; |
2405 | break; | |
f9c6b907 AM |
2406 | case BFD_RELOC_PPC64_DTPREL16_HIGHA: r = R_PPC64_DTPREL16_HIGHA; |
2407 | break; | |
411e1bfb AM |
2408 | case BFD_RELOC_PPC_DTPREL: r = R_PPC64_DTPREL64; |
2409 | break; | |
2410 | case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC64_GOT_TLSGD16; | |
2411 | break; | |
2412 | case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC64_GOT_TLSGD16_LO; | |
2413 | break; | |
2414 | case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC64_GOT_TLSGD16_HI; | |
2415 | break; | |
2416 | case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC64_GOT_TLSGD16_HA; | |
2417 | break; | |
2418 | case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC64_GOT_TLSLD16; | |
2419 | break; | |
2420 | case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC64_GOT_TLSLD16_LO; | |
2421 | break; | |
2422 | case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC64_GOT_TLSLD16_HI; | |
2423 | break; | |
2424 | case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC64_GOT_TLSLD16_HA; | |
2425 | break; | |
2426 | case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC64_GOT_TPREL16_DS; | |
2427 | break; | |
2428 | case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC64_GOT_TPREL16_LO_DS; | |
2429 | break; | |
2430 | case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC64_GOT_TPREL16_HI; | |
2431 | break; | |
2432 | case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC64_GOT_TPREL16_HA; | |
2433 | break; | |
2434 | case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC64_GOT_DTPREL16_DS; | |
2435 | break; | |
2436 | case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC64_GOT_DTPREL16_LO_DS; | |
2437 | break; | |
2438 | case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC64_GOT_DTPREL16_HI; | |
2439 | break; | |
2440 | case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC64_GOT_DTPREL16_HA; | |
2441 | break; | |
2442 | case BFD_RELOC_PPC64_TPREL16_DS: r = R_PPC64_TPREL16_DS; | |
2443 | break; | |
2444 | case BFD_RELOC_PPC64_TPREL16_LO_DS: r = R_PPC64_TPREL16_LO_DS; | |
2445 | break; | |
2446 | case BFD_RELOC_PPC64_TPREL16_HIGHER: r = R_PPC64_TPREL16_HIGHER; | |
2447 | break; | |
2448 | case BFD_RELOC_PPC64_TPREL16_HIGHERA: r = R_PPC64_TPREL16_HIGHERA; | |
2449 | break; | |
2450 | case BFD_RELOC_PPC64_TPREL16_HIGHEST: r = R_PPC64_TPREL16_HIGHEST; | |
2451 | break; | |
2452 | case BFD_RELOC_PPC64_TPREL16_HIGHESTA: r = R_PPC64_TPREL16_HIGHESTA; | |
2453 | break; | |
2454 | case BFD_RELOC_PPC64_DTPREL16_DS: r = R_PPC64_DTPREL16_DS; | |
2455 | break; | |
2456 | case BFD_RELOC_PPC64_DTPREL16_LO_DS: r = R_PPC64_DTPREL16_LO_DS; | |
2457 | break; | |
2458 | case BFD_RELOC_PPC64_DTPREL16_HIGHER: r = R_PPC64_DTPREL16_HIGHER; | |
2459 | break; | |
2460 | case BFD_RELOC_PPC64_DTPREL16_HIGHERA: r = R_PPC64_DTPREL16_HIGHERA; | |
2461 | break; | |
2462 | case BFD_RELOC_PPC64_DTPREL16_HIGHEST: r = R_PPC64_DTPREL16_HIGHEST; | |
2463 | break; | |
2464 | case BFD_RELOC_PPC64_DTPREL16_HIGHESTA: r = R_PPC64_DTPREL16_HIGHESTA; | |
2465 | break; | |
25f23106 AM |
2466 | case BFD_RELOC_16_PCREL: r = R_PPC64_REL16; |
2467 | break; | |
2468 | case BFD_RELOC_LO16_PCREL: r = R_PPC64_REL16_LO; | |
2469 | break; | |
2470 | case BFD_RELOC_HI16_PCREL: r = R_PPC64_REL16_HI; | |
2471 | break; | |
2472 | case BFD_RELOC_HI16_S_PCREL: r = R_PPC64_REL16_HA; | |
2473 | break; | |
7ba71655 AM |
2474 | case BFD_RELOC_PPC_16DX_HA: r = R_PPC64_16DX_HA; |
2475 | break; | |
a680de9a PB |
2476 | case BFD_RELOC_PPC_REL16DX_HA: r = R_PPC64_REL16DX_HA; |
2477 | break; | |
006589cf AM |
2478 | case BFD_RELOC_PPC64_ENTRY: r = R_PPC64_ENTRY; |
2479 | break; | |
45965137 AM |
2480 | case BFD_RELOC_PPC64_ADDR64_LOCAL: r = R_PPC64_ADDR64_LOCAL; |
2481 | break; | |
411e1bfb AM |
2482 | case BFD_RELOC_VTABLE_INHERIT: r = R_PPC64_GNU_VTINHERIT; |
2483 | break; | |
2484 | case BFD_RELOC_VTABLE_ENTRY: r = R_PPC64_GNU_VTENTRY; | |
5bd4f169 AM |
2485 | break; |
2486 | } | |
2487 | ||
4ce794b7 | 2488 | return ppc64_elf_howto_table[r]; |
5bd4f169 AM |
2489 | }; |
2490 | ||
157090f7 AM |
2491 | static reloc_howto_type * |
2492 | ppc64_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, | |
2493 | const char *r_name) | |
2494 | { | |
2495 | unsigned int i; | |
2496 | ||
a4b6fadd | 2497 | for (i = 0; i < ARRAY_SIZE (ppc64_elf_howto_raw); i++) |
157090f7 AM |
2498 | if (ppc64_elf_howto_raw[i].name != NULL |
2499 | && strcasecmp (ppc64_elf_howto_raw[i].name, r_name) == 0) | |
2500 | return &ppc64_elf_howto_raw[i]; | |
2501 | ||
f3185997 | 2502 | |
157090f7 AM |
2503 | return NULL; |
2504 | } | |
2505 | ||
5bd4f169 AM |
2506 | /* Set the howto pointer for a PowerPC ELF reloc. */ |
2507 | ||
f3185997 | 2508 | static bfd_boolean |
4aef7643 | 2509 | ppc64_elf_info_to_howto (bfd *abfd, arelent *cache_ptr, |
4ce794b7 | 2510 | Elf_Internal_Rela *dst) |
5bd4f169 | 2511 | { |
65f38f15 AM |
2512 | unsigned int type; |
2513 | ||
ef60b7ff | 2514 | /* Initialize howto table if needed. */ |
5bd4f169 | 2515 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) |
5bd4f169 AM |
2516 | ppc_howto_init (); |
2517 | ||
65f38f15 | 2518 | type = ELF64_R_TYPE (dst->r_info); |
a4b6fadd | 2519 | if (type >= ARRAY_SIZE (ppc64_elf_howto_table)) |
d0fb9a8d | 2520 | { |
695344c0 | 2521 | /* xgettext:c-format */ |
0aa13fee | 2522 | _bfd_error_handler (_("%pB: unsupported relocation type %#x"), |
cf97bcb0 | 2523 | abfd, type); |
f3185997 NC |
2524 | bfd_set_error (bfd_error_bad_value); |
2525 | return FALSE; | |
d0fb9a8d | 2526 | } |
65f38f15 | 2527 | cache_ptr->howto = ppc64_elf_howto_table[type]; |
f3185997 NC |
2528 | if (cache_ptr->howto == NULL || cache_ptr->howto->name == NULL) |
2529 | { | |
2530 | /* xgettext:c-format */ | |
2531 | _bfd_error_handler (_("%pB: unsupported relocation type %#x"), | |
2532 | abfd, type); | |
2533 | bfd_set_error (bfd_error_bad_value); | |
2534 | return FALSE; | |
2535 | } | |
2536 | ||
2537 | return TRUE; | |
5bd4f169 AM |
2538 | } |
2539 | ||
04c9666a | 2540 | /* Handle the R_PPC64_ADDR16_HA and similar relocs. */ |
5bd4f169 AM |
2541 | |
2542 | static bfd_reloc_status_type | |
4ce794b7 AM |
2543 | ppc64_elf_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2544 | void *data, asection *input_section, | |
2545 | bfd *output_bfd, char **error_message) | |
5bd4f169 | 2546 | { |
a680de9a PB |
2547 | enum elf_ppc64_reloc_type r_type; |
2548 | long insn; | |
2549 | bfd_size_type octets; | |
3de43e7b | 2550 | bfd_vma value; |
a680de9a | 2551 | |
805fc799 AM |
2552 | /* If this is a relocatable link (output_bfd test tells us), just |
2553 | call the generic function. Any adjustment will be done at final | |
2554 | link time. */ | |
2555 | if (output_bfd != NULL) | |
cedb70c5 | 2556 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2557 | input_section, output_bfd, error_message); |
2558 | ||
2559 | /* Adjust the addend for sign extension of the low 16 bits. | |
2560 | We won't actually be using the low 16 bits, so trashing them | |
2561 | doesn't matter. */ | |
2562 | reloc_entry->addend += 0x8000; | |
a680de9a PB |
2563 | r_type = reloc_entry->howto->type; |
2564 | if (r_type != R_PPC64_REL16DX_HA) | |
2565 | return bfd_reloc_continue; | |
2566 | ||
2567 | value = 0; | |
2568 | if (!bfd_is_com_section (symbol->section)) | |
2569 | value = symbol->value; | |
2570 | value += (reloc_entry->addend | |
2571 | + symbol->section->output_offset | |
2572 | + symbol->section->output_section->vma); | |
2573 | value -= (reloc_entry->address | |
2574 | + input_section->output_offset | |
2575 | + input_section->output_section->vma); | |
3de43e7b | 2576 | value = (bfd_signed_vma) value >> 16; |
a680de9a PB |
2577 | |
2578 | octets = reloc_entry->address * bfd_octets_per_byte (abfd); | |
2579 | insn = bfd_get_32 (abfd, (bfd_byte *) data + octets); | |
2580 | insn &= ~0x1fffc1; | |
3de43e7b | 2581 | insn |= (value & 0xffc1) | ((value & 0x3e) << 15); |
a680de9a | 2582 | bfd_put_32 (abfd, insn, (bfd_byte *) data + octets); |
3de43e7b | 2583 | if (value + 0x8000 > 0xffff) |
a680de9a PB |
2584 | return bfd_reloc_overflow; |
2585 | return bfd_reloc_ok; | |
805fc799 | 2586 | } |
5bd4f169 | 2587 | |
2441e016 AM |
2588 | static bfd_reloc_status_type |
2589 | ppc64_elf_branch_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, | |
2590 | void *data, asection *input_section, | |
2591 | bfd *output_bfd, char **error_message) | |
2592 | { | |
2593 | if (output_bfd != NULL) | |
2594 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, | |
2595 | input_section, output_bfd, error_message); | |
2596 | ||
699733f6 AM |
2597 | if (strcmp (symbol->section->name, ".opd") == 0 |
2598 | && (symbol->section->owner->flags & DYNAMIC) == 0) | |
2441e016 AM |
2599 | { |
2600 | bfd_vma dest = opd_entry_value (symbol->section, | |
2601 | symbol->value + reloc_entry->addend, | |
aef36ac1 | 2602 | NULL, NULL, FALSE); |
2441e016 AM |
2603 | if (dest != (bfd_vma) -1) |
2604 | reloc_entry->addend = dest - (symbol->value | |
2605 | + symbol->section->output_section->vma | |
2606 | + symbol->section->output_offset); | |
2607 | } | |
810d4e75 AM |
2608 | else |
2609 | { | |
2610 | elf_symbol_type *elfsym = (elf_symbol_type *) symbol; | |
2611 | ||
2612 | if (symbol->section->owner != abfd | |
9f284bf9 | 2613 | && symbol->section->owner != NULL |
810d4e75 AM |
2614 | && abiversion (symbol->section->owner) >= 2) |
2615 | { | |
2616 | unsigned int i; | |
2617 | ||
2618 | for (i = 0; i < symbol->section->owner->symcount; ++i) | |
2619 | { | |
2620 | asymbol *symdef = symbol->section->owner->outsymbols[i]; | |
2621 | ||
2622 | if (strcmp (symdef->name, symbol->name) == 0) | |
2623 | { | |
2624 | elfsym = (elf_symbol_type *) symdef; | |
2625 | break; | |
2626 | } | |
2627 | } | |
2628 | } | |
2629 | reloc_entry->addend | |
2630 | += PPC64_LOCAL_ENTRY_OFFSET (elfsym->internal_elf_sym.st_other); | |
2631 | } | |
2441e016 AM |
2632 | return bfd_reloc_continue; |
2633 | } | |
2634 | ||
805fc799 | 2635 | static bfd_reloc_status_type |
4ce794b7 AM |
2636 | ppc64_elf_brtaken_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2637 | void *data, asection *input_section, | |
2638 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2639 | { |
2640 | long insn; | |
04c9666a | 2641 | enum elf_ppc64_reloc_type r_type; |
805fc799 | 2642 | bfd_size_type octets; |
794e51c0 AM |
2643 | /* Assume 'at' branch hints. */ |
2644 | bfd_boolean is_isa_v2 = TRUE; | |
805fc799 AM |
2645 | |
2646 | /* If this is a relocatable link (output_bfd test tells us), just | |
2647 | call the generic function. Any adjustment will be done at final | |
2648 | link time. */ | |
5bd4f169 | 2649 | if (output_bfd != NULL) |
cedb70c5 | 2650 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2651 | input_section, output_bfd, error_message); |
2652 | ||
2653 | octets = reloc_entry->address * bfd_octets_per_byte (abfd); | |
2654 | insn = bfd_get_32 (abfd, (bfd_byte *) data + octets); | |
2655 | insn &= ~(0x01 << 21); | |
4ce794b7 | 2656 | r_type = reloc_entry->howto->type; |
805fc799 AM |
2657 | if (r_type == R_PPC64_ADDR14_BRTAKEN |
2658 | || r_type == R_PPC64_REL14_BRTAKEN) | |
cedb70c5 | 2659 | insn |= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */ |
805fc799 | 2660 | |
794e51c0 | 2661 | if (is_isa_v2) |
5bd4f169 | 2662 | { |
805fc799 AM |
2663 | /* Set 'a' bit. This is 0b00010 in BO field for branch |
2664 | on CR(BI) insns (BO == 001at or 011at), and 0b01000 | |
2665 | for branch on CTR insns (BO == 1a00t or 1a01t). */ | |
2666 | if ((insn & (0x14 << 21)) == (0x04 << 21)) | |
2667 | insn |= 0x02 << 21; | |
2668 | else if ((insn & (0x14 << 21)) == (0x10 << 21)) | |
2669 | insn |= 0x08 << 21; | |
2670 | else | |
2441e016 | 2671 | goto out; |
5bd4f169 | 2672 | } |
805fc799 AM |
2673 | else |
2674 | { | |
2675 | bfd_vma target = 0; | |
2676 | bfd_vma from; | |
5bd4f169 | 2677 | |
805fc799 AM |
2678 | if (!bfd_is_com_section (symbol->section)) |
2679 | target = symbol->value; | |
2680 | target += symbol->section->output_section->vma; | |
2681 | target += symbol->section->output_offset; | |
2682 | target += reloc_entry->addend; | |
5bd4f169 | 2683 | |
805fc799 AM |
2684 | from = (reloc_entry->address |
2685 | + input_section->output_offset | |
2686 | + input_section->output_section->vma); | |
5bd4f169 | 2687 | |
805fc799 AM |
2688 | /* Invert 'y' bit if not the default. */ |
2689 | if ((bfd_signed_vma) (target - from) < 0) | |
2690 | insn ^= 0x01 << 21; | |
2691 | } | |
4ce794b7 | 2692 | bfd_put_32 (abfd, insn, (bfd_byte *) data + octets); |
2441e016 AM |
2693 | out: |
2694 | return ppc64_elf_branch_reloc (abfd, reloc_entry, symbol, data, | |
2695 | input_section, output_bfd, error_message); | |
805fc799 | 2696 | } |
5bd4f169 | 2697 | |
805fc799 | 2698 | static bfd_reloc_status_type |
4ce794b7 AM |
2699 | ppc64_elf_sectoff_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2700 | void *data, asection *input_section, | |
2701 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2702 | { |
2703 | /* If this is a relocatable link (output_bfd test tells us), just | |
2704 | call the generic function. Any adjustment will be done at final | |
2705 | link time. */ | |
2706 | if (output_bfd != NULL) | |
cedb70c5 | 2707 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 | 2708 | input_section, output_bfd, error_message); |
5bd4f169 | 2709 | |
805fc799 AM |
2710 | /* Subtract the symbol section base address. */ |
2711 | reloc_entry->addend -= symbol->section->output_section->vma; | |
5bd4f169 AM |
2712 | return bfd_reloc_continue; |
2713 | } | |
2714 | ||
805fc799 | 2715 | static bfd_reloc_status_type |
4ce794b7 AM |
2716 | ppc64_elf_sectoff_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2717 | void *data, asection *input_section, | |
2718 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2719 | { |
2720 | /* If this is a relocatable link (output_bfd test tells us), just | |
2721 | call the generic function. Any adjustment will be done at final | |
2722 | link time. */ | |
2723 | if (output_bfd != NULL) | |
cedb70c5 | 2724 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2725 | input_section, output_bfd, error_message); |
2726 | ||
2727 | /* Subtract the symbol section base address. */ | |
2728 | reloc_entry->addend -= symbol->section->output_section->vma; | |
2729 | ||
2730 | /* Adjust the addend for sign extension of the low 16 bits. */ | |
2731 | reloc_entry->addend += 0x8000; | |
2732 | return bfd_reloc_continue; | |
2733 | } | |
2734 | ||
2735 | static bfd_reloc_status_type | |
4ce794b7 AM |
2736 | ppc64_elf_toc_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2737 | void *data, asection *input_section, | |
2738 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2739 | { |
2740 | bfd_vma TOCstart; | |
2741 | ||
2742 | /* If this is a relocatable link (output_bfd test tells us), just | |
2743 | call the generic function. Any adjustment will be done at final | |
2744 | link time. */ | |
2745 | if (output_bfd != NULL) | |
cedb70c5 | 2746 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2747 | input_section, output_bfd, error_message); |
2748 | ||
2749 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
2750 | if (TOCstart == 0) | |
1c865ab2 | 2751 | TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner); |
805fc799 AM |
2752 | |
2753 | /* Subtract the TOC base address. */ | |
2754 | reloc_entry->addend -= TOCstart + TOC_BASE_OFF; | |
2755 | return bfd_reloc_continue; | |
2756 | } | |
2757 | ||
2758 | static bfd_reloc_status_type | |
4ce794b7 AM |
2759 | ppc64_elf_toc_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2760 | void *data, asection *input_section, | |
2761 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2762 | { |
2763 | bfd_vma TOCstart; | |
2764 | ||
2765 | /* If this is a relocatable link (output_bfd test tells us), just | |
2766 | call the generic function. Any adjustment will be done at final | |
2767 | link time. */ | |
2768 | if (output_bfd != NULL) | |
cedb70c5 | 2769 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2770 | input_section, output_bfd, error_message); |
2771 | ||
2772 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
2773 | if (TOCstart == 0) | |
1c865ab2 | 2774 | TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner); |
805fc799 AM |
2775 | |
2776 | /* Subtract the TOC base address. */ | |
2777 | reloc_entry->addend -= TOCstart + TOC_BASE_OFF; | |
2778 | ||
2779 | /* Adjust the addend for sign extension of the low 16 bits. */ | |
2780 | reloc_entry->addend += 0x8000; | |
2781 | return bfd_reloc_continue; | |
2782 | } | |
2783 | ||
2784 | static bfd_reloc_status_type | |
4ce794b7 AM |
2785 | ppc64_elf_toc64_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2786 | void *data, asection *input_section, | |
2787 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2788 | { |
2789 | bfd_vma TOCstart; | |
2790 | bfd_size_type octets; | |
2791 | ||
2792 | /* If this is a relocatable link (output_bfd test tells us), just | |
2793 | call the generic function. Any adjustment will be done at final | |
2794 | link time. */ | |
2795 | if (output_bfd != NULL) | |
cedb70c5 | 2796 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2797 | input_section, output_bfd, error_message); |
2798 | ||
2799 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
2800 | if (TOCstart == 0) | |
1c865ab2 | 2801 | TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner); |
805fc799 AM |
2802 | |
2803 | octets = reloc_entry->address * bfd_octets_per_byte (abfd); | |
2804 | bfd_put_64 (abfd, TOCstart + TOC_BASE_OFF, (bfd_byte *) data + octets); | |
2805 | return bfd_reloc_ok; | |
2806 | } | |
2807 | ||
2808 | static bfd_reloc_status_type | |
4ce794b7 AM |
2809 | ppc64_elf_unhandled_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2810 | void *data, asection *input_section, | |
2811 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2812 | { |
2813 | /* If this is a relocatable link (output_bfd test tells us), just | |
2814 | call the generic function. Any adjustment will be done at final | |
2815 | link time. */ | |
2816 | if (output_bfd != NULL) | |
cedb70c5 | 2817 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2818 | input_section, output_bfd, error_message); |
2819 | ||
2820 | if (error_message != NULL) | |
2821 | { | |
2822 | static char buf[60]; | |
2823 | sprintf (buf, "generic linker can't handle %s", | |
2824 | reloc_entry->howto->name); | |
2825 | *error_message = buf; | |
2826 | } | |
2827 | return bfd_reloc_dangerous; | |
2828 | } | |
2829 | ||
927be08e AM |
2830 | /* Track GOT entries needed for a given symbol. We might need more |
2831 | than one got entry per symbol. */ | |
2832 | struct got_entry | |
2833 | { | |
2834 | struct got_entry *next; | |
2835 | ||
2836 | /* The symbol addend that we'll be placing in the GOT. */ | |
2837 | bfd_vma addend; | |
2838 | ||
2839 | /* Unlike other ELF targets, we use separate GOT entries for the same | |
2840 | symbol referenced from different input files. This is to support | |
2841 | automatic multiple TOC/GOT sections, where the TOC base can vary | |
2842 | from one input file to another. After partitioning into TOC groups | |
2843 | we merge entries within the group. | |
2844 | ||
2845 | Point to the BFD owning this GOT entry. */ | |
2846 | bfd *owner; | |
2847 | ||
2848 | /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD, | |
2849 | TLS_TPREL or TLS_DTPREL for tls entries. */ | |
f961d9dd | 2850 | unsigned char tls_type; |
927be08e AM |
2851 | |
2852 | /* Non-zero if got.ent points to real entry. */ | |
f961d9dd | 2853 | unsigned char is_indirect; |
927be08e AM |
2854 | |
2855 | /* Reference count until size_dynamic_sections, GOT offset thereafter. */ | |
2856 | union | |
2857 | { | |
2858 | bfd_signed_vma refcount; | |
2859 | bfd_vma offset; | |
2860 | struct got_entry *ent; | |
2861 | } got; | |
2862 | }; | |
2863 | ||
2864 | /* The same for PLT. */ | |
2865 | struct plt_entry | |
2866 | { | |
2867 | struct plt_entry *next; | |
2868 | ||
2869 | bfd_vma addend; | |
2870 | ||
2871 | union | |
2872 | { | |
2873 | bfd_signed_vma refcount; | |
2874 | bfd_vma offset; | |
2875 | } plt; | |
2876 | }; | |
2877 | ||
e717da7e AM |
2878 | struct ppc64_elf_obj_tdata |
2879 | { | |
2880 | struct elf_obj_tdata elf; | |
2881 | ||
2882 | /* Shortcuts to dynamic linker sections. */ | |
2883 | asection *got; | |
2884 | asection *relgot; | |
2885 | ||
b3fac117 AM |
2886 | /* Used during garbage collection. We attach global symbols defined |
2887 | on removed .opd entries to this section so that the sym is removed. */ | |
2888 | asection *deleted_section; | |
81688140 | 2889 | |
927be08e | 2890 | /* TLS local dynamic got entry handling. Support for multiple GOT |
e717da7e | 2891 | sections means we potentially need one of these for each input bfd. */ |
927be08e | 2892 | struct got_entry tlsld_got; |
8860955f | 2893 | |
729eabd5 AM |
2894 | union { |
2895 | /* A copy of relocs before they are modified for --emit-relocs. */ | |
2896 | Elf_Internal_Rela *relocs; | |
2897 | ||
2898 | /* Section contents. */ | |
2899 | bfd_byte *contents; | |
2900 | } opd; | |
d77c8a4b AM |
2901 | |
2902 | /* Nonzero if this bfd has small toc/got relocs, ie. that expect | |
2903 | the reloc to be in the range -32768 to 32767. */ | |
98528052 AM |
2904 | unsigned int has_small_toc_reloc : 1; |
2905 | ||
560c8763 AM |
2906 | /* Set if toc/got ha relocs detected not using r2, or lo reloc |
2907 | instruction not one we handle. */ | |
2908 | unsigned int unexpected_toc_insn : 1; | |
e717da7e AM |
2909 | }; |
2910 | ||
2911 | #define ppc64_elf_tdata(bfd) \ | |
2912 | ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any) | |
2913 | ||
2914 | #define ppc64_tlsld_got(bfd) \ | |
2915 | (&ppc64_elf_tdata (bfd)->tlsld_got) | |
2916 | ||
0c8d6e5c AM |
2917 | #define is_ppc64_elf(bfd) \ |
2918 | (bfd_get_flavour (bfd) == bfd_target_elf_flavour \ | |
4dfe6ac6 | 2919 | && elf_object_id (bfd) == PPC64_ELF_DATA) |
0c8d6e5c | 2920 | |
e717da7e AM |
2921 | /* Override the generic function because we store some extras. */ |
2922 | ||
2923 | static bfd_boolean | |
2924 | ppc64_elf_mkobject (bfd *abfd) | |
2925 | { | |
0ffa91dd | 2926 | return bfd_elf_allocate_object (abfd, sizeof (struct ppc64_elf_obj_tdata), |
4dfe6ac6 | 2927 | PPC64_ELF_DATA); |
e717da7e AM |
2928 | } |
2929 | ||
feee612b | 2930 | /* Fix bad default arch selected for a 64 bit input bfd when the |
14b57c7c | 2931 | default is 32 bit. Also select arch based on apuinfo. */ |
feee612b | 2932 | |
b34976b6 | 2933 | static bfd_boolean |
4ce794b7 | 2934 | ppc64_elf_object_p (bfd *abfd) |
feee612b | 2935 | { |
14b57c7c AM |
2936 | if (!abfd->arch_info->the_default) |
2937 | return TRUE; | |
2938 | ||
2939 | if (abfd->arch_info->bits_per_word == 32) | |
feee612b AM |
2940 | { |
2941 | Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd); | |
2942 | ||
2943 | if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS64) | |
2944 | { | |
2945 | /* Relies on arch after 32 bit default being 64 bit default. */ | |
2946 | abfd->arch_info = abfd->arch_info->next; | |
2947 | BFD_ASSERT (abfd->arch_info->bits_per_word == 64); | |
2948 | } | |
2949 | } | |
14b57c7c | 2950 | return _bfd_elf_ppc_set_arch (abfd); |
feee612b AM |
2951 | } |
2952 | ||
d37c89e5 AM |
2953 | /* Support for core dump NOTE sections. */ |
2954 | ||
2955 | static bfd_boolean | |
2956 | ppc64_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) | |
2957 | { | |
eea6121a | 2958 | size_t offset, size; |
d37c89e5 AM |
2959 | |
2960 | if (note->descsz != 504) | |
2961 | return FALSE; | |
2962 | ||
2963 | /* pr_cursig */ | |
228e534f | 2964 | elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12); |
d37c89e5 AM |
2965 | |
2966 | /* pr_pid */ | |
228e534f | 2967 | elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 32); |
d37c89e5 AM |
2968 | |
2969 | /* pr_reg */ | |
2970 | offset = 112; | |
eea6121a | 2971 | size = 384; |
d37c89e5 AM |
2972 | |
2973 | /* Make a ".reg/999" section. */ | |
2974 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", | |
eea6121a | 2975 | size, note->descpos + offset); |
d37c89e5 AM |
2976 | } |
2977 | ||
2978 | static bfd_boolean | |
2979 | ppc64_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) | |
2980 | { | |
2981 | if (note->descsz != 136) | |
2982 | return FALSE; | |
2983 | ||
228e534f | 2984 | elf_tdata (abfd)->core->pid |
bc989cdc | 2985 | = bfd_get_32 (abfd, note->descdata + 24); |
228e534f | 2986 | elf_tdata (abfd)->core->program |
d37c89e5 | 2987 | = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16); |
228e534f | 2988 | elf_tdata (abfd)->core->command |
d37c89e5 AM |
2989 | = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80); |
2990 | ||
2991 | return TRUE; | |
2992 | } | |
2993 | ||
183e98be AM |
2994 | static char * |
2995 | ppc64_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type, | |
2996 | ...) | |
2997 | { | |
2998 | switch (note_type) | |
2999 | { | |
3000 | default: | |
3001 | return NULL; | |
3002 | ||
3003 | case NT_PRPSINFO: | |
3004 | { | |
3005 | char data[136]; | |
3006 | va_list ap; | |
3007 | ||
3008 | va_start (ap, note_type); | |
75cd47ed | 3009 | memset (data, 0, sizeof (data)); |
183e98be AM |
3010 | strncpy (data + 40, va_arg (ap, const char *), 16); |
3011 | strncpy (data + 56, va_arg (ap, const char *), 80); | |
3012 | va_end (ap); | |
3013 | return elfcore_write_note (abfd, buf, bufsiz, | |
3014 | "CORE", note_type, data, sizeof (data)); | |
3015 | } | |
3016 | ||
3017 | case NT_PRSTATUS: | |
3018 | { | |
3019 | char data[504]; | |
3020 | va_list ap; | |
3021 | long pid; | |
3022 | int cursig; | |
3023 | const void *greg; | |
3024 | ||
3025 | va_start (ap, note_type); | |
3026 | memset (data, 0, 112); | |
3027 | pid = va_arg (ap, long); | |
3028 | bfd_put_32 (abfd, pid, data + 32); | |
3029 | cursig = va_arg (ap, int); | |
3030 | bfd_put_16 (abfd, cursig, data + 12); | |
3031 | greg = va_arg (ap, const void *); | |
3032 | memcpy (data + 112, greg, 384); | |
3033 | memset (data + 496, 0, 8); | |
3034 | va_end (ap); | |
3035 | return elfcore_write_note (abfd, buf, bufsiz, | |
3036 | "CORE", note_type, data, sizeof (data)); | |
3037 | } | |
3038 | } | |
3039 | } | |
3040 | ||
5d35169e AM |
3041 | /* Add extra PPC sections. */ |
3042 | ||
b35d266b | 3043 | static const struct bfd_elf_special_section ppc64_elf_special_sections[]= |
7f4d3958 | 3044 | { |
07d6d2b8 AM |
3045 | { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, 0 }, |
3046 | { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, | |
0112cd26 | 3047 | { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, |
07d6d2b8 AM |
3048 | { STRING_COMMA_LEN (".toc"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, |
3049 | { STRING_COMMA_LEN (".toc1"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
0112cd26 | 3050 | { STRING_COMMA_LEN (".tocbss"), 0, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, |
07d6d2b8 | 3051 | { NULL, 0, 0, 0, 0 } |
5d35169e AM |
3052 | }; |
3053 | ||
7c8fe5c4 AM |
3054 | enum _ppc64_sec_type { |
3055 | sec_normal = 0, | |
3056 | sec_opd = 1, | |
3057 | sec_toc = 2 | |
3058 | }; | |
3059 | ||
f0abc2a1 AM |
3060 | struct _ppc64_elf_section_data |
3061 | { | |
3062 | struct bfd_elf_section_data elf; | |
411e1bfb | 3063 | |
f0abc2a1 AM |
3064 | union |
3065 | { | |
51aecdc5 AM |
3066 | /* An array with one entry for each opd function descriptor, |
3067 | and some spares since opd entries may be either 16 or 24 bytes. */ | |
3068 | #define OPD_NDX(OFF) ((OFF) >> 4) | |
74f0fb50 AM |
3069 | struct _opd_sec_data |
3070 | { | |
3071 | /* Points to the function code section for local opd entries. */ | |
3072 | asection **func_sec; | |
3073 | ||
3074 | /* After editing .opd, adjust references to opd local syms. */ | |
3075 | long *adjust; | |
3076 | } opd; | |
7c8fe5c4 | 3077 | |
3a71aa26 AM |
3078 | /* An array for toc sections, indexed by offset/8. */ |
3079 | struct _toc_sec_data | |
3080 | { | |
3081 | /* Specifies the relocation symbol index used at a given toc offset. */ | |
3082 | unsigned *symndx; | |
3083 | ||
3084 | /* And the relocation addend. */ | |
3085 | bfd_vma *add; | |
3086 | } toc; | |
7c8fe5c4 AM |
3087 | } u; |
3088 | ||
3089 | enum _ppc64_sec_type sec_type:2; | |
411e1bfb | 3090 | |
7c8fe5c4 AM |
3091 | /* Flag set when small branches are detected. Used to |
3092 | select suitable defaults for the stub group size. */ | |
3093 | unsigned int has_14bit_branch:1; | |
f0abc2a1 AM |
3094 | }; |
3095 | ||
3096 | #define ppc64_elf_section_data(sec) \ | |
411e1bfb | 3097 | ((struct _ppc64_elf_section_data *) elf_section_data (sec)) |
f0abc2a1 AM |
3098 | |
3099 | static bfd_boolean | |
4ce794b7 | 3100 | ppc64_elf_new_section_hook (bfd *abfd, asection *sec) |
f0abc2a1 | 3101 | { |
f592407e AM |
3102 | if (!sec->used_by_bfd) |
3103 | { | |
3104 | struct _ppc64_elf_section_data *sdata; | |
3105 | bfd_size_type amt = sizeof (*sdata); | |
f0abc2a1 | 3106 | |
f592407e AM |
3107 | sdata = bfd_zalloc (abfd, amt); |
3108 | if (sdata == NULL) | |
3109 | return FALSE; | |
3110 | sec->used_by_bfd = sdata; | |
3111 | } | |
f0abc2a1 AM |
3112 | |
3113 | return _bfd_elf_new_section_hook (abfd, sec); | |
3114 | } | |
4025353c | 3115 | |
74f0fb50 | 3116 | static struct _opd_sec_data * |
4025353c AM |
3117 | get_opd_info (asection * sec) |
3118 | { | |
3119 | if (sec != NULL | |
3120 | && ppc64_elf_section_data (sec) != NULL | |
7c8fe5c4 | 3121 | && ppc64_elf_section_data (sec)->sec_type == sec_opd) |
74f0fb50 | 3122 | return &ppc64_elf_section_data (sec)->u.opd; |
4025353c AM |
3123 | return NULL; |
3124 | } | |
90e3cdf2 JJ |
3125 | \f |
3126 | /* Parameters for the qsort hook. */ | |
90e3cdf2 | 3127 | static bfd_boolean synthetic_relocatable; |
cd285db5 | 3128 | static asection *synthetic_opd; |
90e3cdf2 | 3129 | |
699733f6 | 3130 | /* qsort comparison function for ppc64_elf_get_synthetic_symtab. */ |
90e3cdf2 JJ |
3131 | |
3132 | static int | |
3133 | compare_symbols (const void *ap, const void *bp) | |
3134 | { | |
3135 | const asymbol *a = * (const asymbol **) ap; | |
3136 | const asymbol *b = * (const asymbol **) bp; | |
3137 | ||
699733f6 AM |
3138 | /* Section symbols first. */ |
3139 | if ((a->flags & BSF_SECTION_SYM) && !(b->flags & BSF_SECTION_SYM)) | |
90e3cdf2 | 3140 | return -1; |
699733f6 | 3141 | if (!(a->flags & BSF_SECTION_SYM) && (b->flags & BSF_SECTION_SYM)) |
90e3cdf2 JJ |
3142 | return 1; |
3143 | ||
699733f6 | 3144 | /* then .opd symbols. */ |
cd285db5 AM |
3145 | if (synthetic_opd != NULL) |
3146 | { | |
3147 | if (strcmp (a->section->name, ".opd") == 0 | |
3148 | && strcmp (b->section->name, ".opd") != 0) | |
3149 | return -1; | |
3150 | if (strcmp (a->section->name, ".opd") != 0 | |
3151 | && strcmp (b->section->name, ".opd") == 0) | |
3152 | return 1; | |
3153 | } | |
90e3cdf2 | 3154 | |
699733f6 | 3155 | /* then other code symbols. */ |
90e3cdf2 JJ |
3156 | if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) |
3157 | == (SEC_CODE | SEC_ALLOC) | |
3158 | && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
3159 | != (SEC_CODE | SEC_ALLOC)) | |
3160 | return -1; | |
3161 | ||
3162 | if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
3163 | != (SEC_CODE | SEC_ALLOC) | |
3164 | && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
3165 | == (SEC_CODE | SEC_ALLOC)) | |
3166 | return 1; | |
3167 | ||
3168 | if (synthetic_relocatable) | |
3169 | { | |
3170 | if (a->section->id < b->section->id) | |
3171 | return -1; | |
3172 | ||
3173 | if (a->section->id > b->section->id) | |
3174 | return 1; | |
3175 | } | |
3176 | ||
3177 | if (a->value + a->section->vma < b->value + b->section->vma) | |
3178 | return -1; | |
3179 | ||
3180 | if (a->value + a->section->vma > b->value + b->section->vma) | |
3181 | return 1; | |
3182 | ||
4d35a0aa AM |
3183 | /* For syms with the same value, prefer strong dynamic global function |
3184 | syms over other syms. */ | |
3185 | if ((a->flags & BSF_GLOBAL) != 0 && (b->flags & BSF_GLOBAL) == 0) | |
3186 | return -1; | |
3187 | ||
3188 | if ((a->flags & BSF_GLOBAL) == 0 && (b->flags & BSF_GLOBAL) != 0) | |
3189 | return 1; | |
3190 | ||
3191 | if ((a->flags & BSF_FUNCTION) != 0 && (b->flags & BSF_FUNCTION) == 0) | |
3192 | return -1; | |
3193 | ||
3194 | if ((a->flags & BSF_FUNCTION) == 0 && (b->flags & BSF_FUNCTION) != 0) | |
3195 | return 1; | |
3196 | ||
3197 | if ((a->flags & BSF_WEAK) == 0 && (b->flags & BSF_WEAK) != 0) | |
3198 | return -1; | |
3199 | ||
3200 | if ((a->flags & BSF_WEAK) != 0 && (b->flags & BSF_WEAK) == 0) | |
3201 | return 1; | |
3202 | ||
3203 | if ((a->flags & BSF_DYNAMIC) != 0 && (b->flags & BSF_DYNAMIC) == 0) | |
3204 | return -1; | |
3205 | ||
3206 | if ((a->flags & BSF_DYNAMIC) == 0 && (b->flags & BSF_DYNAMIC) != 0) | |
3207 | return 1; | |
3208 | ||
aaed6f5b | 3209 | return a > b; |
90e3cdf2 JJ |
3210 | } |
3211 | ||
699733f6 | 3212 | /* Search SYMS for a symbol of the given VALUE. */ |
90e3cdf2 | 3213 | |
699733f6 | 3214 | static asymbol * |
7292b3ac | 3215 | sym_exists_at (asymbol **syms, long lo, long hi, unsigned int id, bfd_vma value) |
90e3cdf2 | 3216 | { |
699733f6 | 3217 | long mid; |
90e3cdf2 | 3218 | |
7292b3ac | 3219 | if (id == (unsigned) -1) |
699733f6 AM |
3220 | { |
3221 | while (lo < hi) | |
3222 | { | |
3223 | mid = (lo + hi) >> 1; | |
3224 | if (syms[mid]->value + syms[mid]->section->vma < value) | |
3225 | lo = mid + 1; | |
3226 | else if (syms[mid]->value + syms[mid]->section->vma > value) | |
3227 | hi = mid; | |
3228 | else | |
3229 | return syms[mid]; | |
3230 | } | |
3231 | } | |
3232 | else | |
3233 | { | |
3234 | while (lo < hi) | |
3235 | { | |
3236 | mid = (lo + hi) >> 1; | |
3237 | if (syms[mid]->section->id < id) | |
3238 | lo = mid + 1; | |
3239 | else if (syms[mid]->section->id > id) | |
3240 | hi = mid; | |
3241 | else if (syms[mid]->value < value) | |
3242 | lo = mid + 1; | |
3243 | else if (syms[mid]->value > value) | |
3244 | hi = mid; | |
3245 | else | |
3246 | return syms[mid]; | |
3247 | } | |
3248 | } | |
3249 | return NULL; | |
90e3cdf2 JJ |
3250 | } |
3251 | ||
468392fb AM |
3252 | static bfd_boolean |
3253 | section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr) | |
3254 | { | |
3255 | bfd_vma vma = *(bfd_vma *) ptr; | |
3256 | return ((section->flags & SEC_ALLOC) != 0 | |
3257 | && section->vma <= vma | |
3258 | && vma < section->vma + section->size); | |
3259 | } | |
3260 | ||
699733f6 | 3261 | /* Create synthetic symbols, effectively restoring "dot-symbol" function |
c4b0b099 AM |
3262 | entry syms. Also generate @plt symbols for the glink branch table. |
3263 | Returns count of synthetic symbols in RET or -1 on error. */ | |
90e3cdf2 JJ |
3264 | |
3265 | static long | |
a7535cf3 AM |
3266 | ppc64_elf_get_synthetic_symtab (bfd *abfd, |
3267 | long static_count, asymbol **static_syms, | |
3268 | long dyn_count, asymbol **dyn_syms, | |
c9727e01 | 3269 | asymbol **ret) |
90e3cdf2 JJ |
3270 | { |
3271 | asymbol *s; | |
0ccf57bd | 3272 | size_t i, j, count; |
90e3cdf2 | 3273 | char *names; |
0ccf57bd | 3274 | size_t symcount, codesecsym, codesecsymend, secsymend, opdsymend; |
ee67d69a | 3275 | asection *opd = NULL; |
90e3cdf2 | 3276 | bfd_boolean relocatable = (abfd->flags & (EXEC_P | DYNAMIC)) == 0; |
a7535cf3 | 3277 | asymbol **syms; |
ee67d69a | 3278 | int abi = abiversion (abfd); |
90e3cdf2 JJ |
3279 | |
3280 | *ret = NULL; | |
3281 | ||
ee67d69a AM |
3282 | if (abi < 2) |
3283 | { | |
3284 | opd = bfd_get_section_by_name (abfd, ".opd"); | |
3285 | if (opd == NULL && abi == 1) | |
3286 | return 0; | |
3287 | } | |
90e3cdf2 | 3288 | |
a5259595 AM |
3289 | syms = NULL; |
3290 | codesecsym = 0; | |
3291 | codesecsymend = 0; | |
3292 | secsymend = 0; | |
3293 | opdsymend = 0; | |
3294 | symcount = 0; | |
3295 | if (opd != NULL) | |
c9727e01 | 3296 | { |
a5259595 AM |
3297 | symcount = static_count; |
3298 | if (!relocatable) | |
3299 | symcount += dyn_count; | |
3300 | if (symcount == 0) | |
3301 | return 0; | |
c9727e01 | 3302 | |
a5259595 AM |
3303 | syms = bfd_malloc ((symcount + 1) * sizeof (*syms)); |
3304 | if (syms == NULL) | |
3305 | return -1; | |
90e3cdf2 | 3306 | |
a5259595 AM |
3307 | if (!relocatable && static_count != 0 && dyn_count != 0) |
3308 | { | |
3309 | /* Use both symbol tables. */ | |
3310 | memcpy (syms, static_syms, static_count * sizeof (*syms)); | |
3311 | memcpy (syms + static_count, dyn_syms, | |
3312 | (dyn_count + 1) * sizeof (*syms)); | |
3313 | } | |
3314 | else if (!relocatable && static_count == 0) | |
3315 | memcpy (syms, dyn_syms, (symcount + 1) * sizeof (*syms)); | |
3316 | else | |
3317 | memcpy (syms, static_syms, (symcount + 1) * sizeof (*syms)); | |
90e3cdf2 | 3318 | |
0ccf57bd AM |
3319 | /* Trim uninteresting symbols. Interesting symbols are section, |
3320 | function, and notype symbols. */ | |
3321 | for (i = 0, j = 0; i < symcount; ++i) | |
3322 | if ((syms[i]->flags & (BSF_FILE | BSF_OBJECT | BSF_THREAD_LOCAL | |
3323 | | BSF_RELC | BSF_SRELC)) == 0) | |
3324 | syms[j++] = syms[i]; | |
3325 | symcount = j; | |
3326 | ||
a5259595 AM |
3327 | synthetic_relocatable = relocatable; |
3328 | synthetic_opd = opd; | |
3329 | qsort (syms, symcount, sizeof (*syms), compare_symbols); | |
90e3cdf2 | 3330 | |
a5259595 AM |
3331 | if (!relocatable && symcount > 1) |
3332 | { | |
a5259595 AM |
3333 | /* Trim duplicate syms, since we may have merged the normal and |
3334 | dynamic symbols. Actually, we only care about syms that have | |
3335 | different values, so trim any with the same value. */ | |
3336 | for (i = 1, j = 1; i < symcount; ++i) | |
3337 | if (syms[i - 1]->value + syms[i - 1]->section->vma | |
3338 | != syms[i]->value + syms[i]->section->vma) | |
3339 | syms[j++] = syms[i]; | |
3340 | symcount = j; | |
3341 | } | |
699733f6 | 3342 | |
a5259595 AM |
3343 | i = 0; |
3344 | /* Note that here and in compare_symbols we can't compare opd and | |
3345 | sym->section directly. With separate debug info files, the | |
3346 | symbols will be extracted from the debug file while abfd passed | |
3347 | to this function is the real binary. */ | |
0ccf57bd | 3348 | if (strcmp (syms[i]->section->name, ".opd") == 0) |
a5259595 AM |
3349 | ++i; |
3350 | codesecsym = i; | |
3351 | ||
3352 | for (; i < symcount; ++i) | |
3353 | if (((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | |
3354 | | SEC_THREAD_LOCAL)) | |
3355 | != (SEC_CODE | SEC_ALLOC)) | |
3356 | || (syms[i]->flags & BSF_SECTION_SYM) == 0) | |
3357 | break; | |
3358 | codesecsymend = i; | |
3359 | ||
3360 | for (; i < symcount; ++i) | |
3361 | if ((syms[i]->flags & BSF_SECTION_SYM) == 0) | |
3362 | break; | |
3363 | secsymend = i; | |
3364 | ||
3365 | for (; i < symcount; ++i) | |
3366 | if (strcmp (syms[i]->section->name, ".opd") != 0) | |
3367 | break; | |
3368 | opdsymend = i; | |
3369 | ||
3370 | for (; i < symcount; ++i) | |
3371 | if ((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
3372 | != (SEC_CODE | SEC_ALLOC)) | |
3373 | break; | |
3374 | symcount = i; | |
3375 | } | |
c9727e01 | 3376 | count = 0; |
90e3cdf2 | 3377 | |
699733f6 | 3378 | if (relocatable) |
90e3cdf2 | 3379 | { |
699733f6 AM |
3380 | bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean); |
3381 | arelent *r; | |
3382 | size_t size; | |
0ccf57bd | 3383 | size_t relcount; |
90e3cdf2 | 3384 | |
468392fb AM |
3385 | if (opdsymend == secsymend) |
3386 | goto done; | |
3387 | ||
699733f6 | 3388 | slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; |
90e3cdf2 | 3389 | relcount = (opd->flags & SEC_RELOC) ? opd->reloc_count : 0; |
7356fed5 | 3390 | if (relcount == 0) |
c9727e01 | 3391 | goto done; |
90e3cdf2 | 3392 | |
7356fed5 AM |
3393 | if (!(*slurp_relocs) (abfd, opd, static_syms, FALSE)) |
3394 | { | |
3395 | count = -1; | |
3396 | goto done; | |
3397 | } | |
3398 | ||
699733f6 | 3399 | size = 0; |
595da8c5 | 3400 | for (i = secsymend, r = opd->relocation; i < opdsymend; ++i) |
699733f6 AM |
3401 | { |
3402 | asymbol *sym; | |
90e3cdf2 | 3403 | |
595da8c5 | 3404 | while (r < opd->relocation + relcount |
699733f6 AM |
3405 | && r->address < syms[i]->value + opd->vma) |
3406 | ++r; | |
90e3cdf2 | 3407 | |
595da8c5 | 3408 | if (r == opd->relocation + relcount) |
699733f6 | 3409 | break; |
90e3cdf2 | 3410 | |
699733f6 AM |
3411 | if (r->address != syms[i]->value + opd->vma) |
3412 | continue; | |
90e3cdf2 | 3413 | |
699733f6 AM |
3414 | if (r->howto->type != R_PPC64_ADDR64) |
3415 | continue; | |
90e3cdf2 | 3416 | |
699733f6 AM |
3417 | sym = *r->sym_ptr_ptr; |
3418 | if (!sym_exists_at (syms, opdsymend, symcount, | |
3419 | sym->section->id, sym->value + r->addend)) | |
3420 | { | |
3421 | ++count; | |
3422 | size += sizeof (asymbol); | |
3423 | size += strlen (syms[i]->name) + 2; | |
3424 | } | |
3425 | } | |
90e3cdf2 | 3426 | |
c4b0b099 AM |
3427 | if (size == 0) |
3428 | goto done; | |
699733f6 AM |
3429 | s = *ret = bfd_malloc (size); |
3430 | if (s == NULL) | |
3431 | { | |
7356fed5 | 3432 | count = -1; |
c9727e01 | 3433 | goto done; |
699733f6 | 3434 | } |
90e3cdf2 | 3435 | |
699733f6 | 3436 | names = (char *) (s + count); |
90e3cdf2 | 3437 | |
595da8c5 | 3438 | for (i = secsymend, r = opd->relocation; i < opdsymend; ++i) |
90e3cdf2 | 3439 | { |
699733f6 | 3440 | asymbol *sym; |
90e3cdf2 | 3441 | |
595da8c5 | 3442 | while (r < opd->relocation + relcount |
699733f6 AM |
3443 | && r->address < syms[i]->value + opd->vma) |
3444 | ++r; | |
90e3cdf2 | 3445 | |
595da8c5 | 3446 | if (r == opd->relocation + relcount) |
699733f6 AM |
3447 | break; |
3448 | ||
3449 | if (r->address != syms[i]->value + opd->vma) | |
3450 | continue; | |
3451 | ||
3452 | if (r->howto->type != R_PPC64_ADDR64) | |
3453 | continue; | |
90e3cdf2 | 3454 | |
699733f6 AM |
3455 | sym = *r->sym_ptr_ptr; |
3456 | if (!sym_exists_at (syms, opdsymend, symcount, | |
3457 | sym->section->id, sym->value + r->addend)) | |
3458 | { | |
3459 | size_t len; | |
3460 | ||
3461 | *s = *syms[i]; | |
6ba2a415 | 3462 | s->flags |= BSF_SYNTHETIC; |
699733f6 AM |
3463 | s->section = sym->section; |
3464 | s->value = sym->value + r->addend; | |
3465 | s->name = names; | |
3466 | *names++ = '.'; | |
3467 | len = strlen (syms[i]->name); | |
3468 | memcpy (names, syms[i]->name, len + 1); | |
3469 | names += len + 1; | |
6f610d07 UW |
3470 | /* Have udata.p point back to the original symbol this |
3471 | synthetic symbol was derived from. */ | |
3472 | s->udata.p = syms[i]; | |
699733f6 AM |
3473 | s++; |
3474 | } | |
3475 | } | |
3476 | } | |
3477 | else | |
90e3cdf2 | 3478 | { |
468392fb | 3479 | bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean); |
ee67d69a | 3480 | bfd_byte *contents = NULL; |
699733f6 | 3481 | size_t size; |
0ccf57bd | 3482 | size_t plt_count = 0; |
468392fb AM |
3483 | bfd_vma glink_vma = 0, resolv_vma = 0; |
3484 | asection *dynamic, *glink = NULL, *relplt = NULL; | |
3485 | arelent *p; | |
90e3cdf2 | 3486 | |
ee67d69a | 3487 | if (opd != NULL && !bfd_malloc_and_get_section (abfd, opd, &contents)) |
699733f6 | 3488 | { |
c4b0b099 AM |
3489 | free_contents_and_exit_err: |
3490 | count = -1; | |
ee67d69a | 3491 | free_contents_and_exit: |
699733f6 | 3492 | if (contents) |
ee67d69a | 3493 | free (contents); |
c9727e01 | 3494 | goto done; |
699733f6 | 3495 | } |
90e3cdf2 | 3496 | |
699733f6 AM |
3497 | size = 0; |
3498 | for (i = secsymend; i < opdsymend; ++i) | |
3499 | { | |
3500 | bfd_vma ent; | |
90e3cdf2 | 3501 | |
5ef11c02 AM |
3502 | /* Ignore bogus symbols. */ |
3503 | if (syms[i]->value > opd->size - 8) | |
3504 | continue; | |
3505 | ||
699733f6 AM |
3506 | ent = bfd_get_64 (abfd, contents + syms[i]->value); |
3507 | if (!sym_exists_at (syms, opdsymend, symcount, -1, ent)) | |
3508 | { | |
3509 | ++count; | |
3510 | size += sizeof (asymbol); | |
3511 | size += strlen (syms[i]->name) + 2; | |
3512 | } | |
3513 | } | |
90e3cdf2 | 3514 | |
468392fb | 3515 | /* Get start of .glink stubs from DT_PPC64_GLINK. */ |
066ee829 AM |
3516 | if (dyn_count != 0 |
3517 | && (dynamic = bfd_get_section_by_name (abfd, ".dynamic")) != NULL) | |
468392fb AM |
3518 | { |
3519 | bfd_byte *dynbuf, *extdyn, *extdynend; | |
3520 | size_t extdynsize; | |
3521 | void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *); | |
3522 | ||
3523 | if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf)) | |
c4b0b099 | 3524 | goto free_contents_and_exit_err; |
468392fb AM |
3525 | |
3526 | extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn; | |
3527 | swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in; | |
3528 | ||
3529 | extdyn = dynbuf; | |
3530 | extdynend = extdyn + dynamic->size; | |
3531 | for (; extdyn < extdynend; extdyn += extdynsize) | |
3532 | { | |
3533 | Elf_Internal_Dyn dyn; | |
3534 | (*swap_dyn_in) (abfd, extdyn, &dyn); | |
3535 | ||
3536 | if (dyn.d_tag == DT_NULL) | |
3537 | break; | |
3538 | ||
3539 | if (dyn.d_tag == DT_PPC64_GLINK) | |
3540 | { | |
9e390558 AM |
3541 | /* The first glink stub starts at DT_PPC64_GLINK plus 32. |
3542 | See comment in ppc64_elf_finish_dynamic_sections. */ | |
3543 | glink_vma = dyn.d_un.d_val + 8 * 4; | |
468392fb AM |
3544 | /* The .glink section usually does not survive the final |
3545 | link; search for the section (usually .text) where the | |
3546 | glink stubs now reside. */ | |
3547 | glink = bfd_sections_find_if (abfd, section_covers_vma, | |
3548 | &glink_vma); | |
3549 | break; | |
3550 | } | |
3551 | } | |
3552 | ||
3553 | free (dynbuf); | |
3554 | } | |
3555 | ||
3556 | if (glink != NULL) | |
3557 | { | |
3558 | /* Determine __glink trampoline by reading the relative branch | |
3559 | from the first glink stub. */ | |
3560 | bfd_byte buf[4]; | |
b9e5796b AM |
3561 | unsigned int off = 0; |
3562 | ||
3563 | while (bfd_get_section_contents (abfd, glink, buf, | |
3564 | glink_vma + off - glink->vma, 4)) | |
468392fb AM |
3565 | { |
3566 | unsigned int insn = bfd_get_32 (abfd, buf); | |
3567 | insn ^= B_DOT; | |
3568 | if ((insn & ~0x3fffffc) == 0) | |
b9e5796b AM |
3569 | { |
3570 | resolv_vma = glink_vma + off + (insn ^ 0x2000000) - 0x2000000; | |
3571 | break; | |
3572 | } | |
3573 | off += 4; | |
3574 | if (off > 4) | |
3575 | break; | |
468392fb AM |
3576 | } |
3577 | ||
3578 | if (resolv_vma) | |
3579 | size += sizeof (asymbol) + sizeof ("__glink_PLTresolve"); | |
468392fb | 3580 | |
066ee829 AM |
3581 | relplt = bfd_get_section_by_name (abfd, ".rela.plt"); |
3582 | if (relplt != NULL) | |
3583 | { | |
3584 | slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; | |
3585 | if (! (*slurp_relocs) (abfd, relplt, dyn_syms, TRUE)) | |
c4b0b099 | 3586 | goto free_contents_and_exit_err; |
68ffbac6 | 3587 | |
066ee829 AM |
3588 | plt_count = relplt->size / sizeof (Elf64_External_Rela); |
3589 | size += plt_count * sizeof (asymbol); | |
468392fb | 3590 | |
066ee829 AM |
3591 | p = relplt->relocation; |
3592 | for (i = 0; i < plt_count; i++, p++) | |
e054468f AM |
3593 | { |
3594 | size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt"); | |
3595 | if (p->addend != 0) | |
3596 | size += sizeof ("+0x") - 1 + 16; | |
3597 | } | |
066ee829 | 3598 | } |
468392fb AM |
3599 | } |
3600 | ||
c4b0b099 AM |
3601 | if (size == 0) |
3602 | goto free_contents_and_exit; | |
699733f6 AM |
3603 | s = *ret = bfd_malloc (size); |
3604 | if (s == NULL) | |
c4b0b099 | 3605 | goto free_contents_and_exit_err; |
90e3cdf2 | 3606 | |
468392fb | 3607 | names = (char *) (s + count + plt_count + (resolv_vma != 0)); |
90e3cdf2 | 3608 | |
699733f6 | 3609 | for (i = secsymend; i < opdsymend; ++i) |
90e3cdf2 | 3610 | { |
699733f6 | 3611 | bfd_vma ent; |
90e3cdf2 | 3612 | |
5ef11c02 AM |
3613 | if (syms[i]->value > opd->size - 8) |
3614 | continue; | |
3615 | ||
699733f6 AM |
3616 | ent = bfd_get_64 (abfd, contents + syms[i]->value); |
3617 | if (!sym_exists_at (syms, opdsymend, symcount, -1, ent)) | |
90e3cdf2 | 3618 | { |
0ccf57bd | 3619 | size_t lo, hi; |
699733f6 | 3620 | size_t len; |
c9727e01 | 3621 | asection *sec = abfd->sections; |
90e3cdf2 | 3622 | |
699733f6 AM |
3623 | *s = *syms[i]; |
3624 | lo = codesecsym; | |
3625 | hi = codesecsymend; | |
3626 | while (lo < hi) | |
3627 | { | |
0ccf57bd | 3628 | size_t mid = (lo + hi) >> 1; |
699733f6 AM |
3629 | if (syms[mid]->section->vma < ent) |
3630 | lo = mid + 1; | |
3631 | else if (syms[mid]->section->vma > ent) | |
3632 | hi = mid; | |
3633 | else | |
c9727e01 AM |
3634 | { |
3635 | sec = syms[mid]->section; | |
3636 | break; | |
3637 | } | |
699733f6 AM |
3638 | } |
3639 | ||
c9727e01 | 3640 | if (lo >= hi && lo > codesecsym) |
699733f6 | 3641 | sec = syms[lo - 1]->section; |
699733f6 AM |
3642 | |
3643 | for (; sec != NULL; sec = sec->next) | |
3644 | { | |
3645 | if (sec->vma > ent) | |
3646 | break; | |
63524580 JK |
3647 | /* SEC_LOAD may not be set if SEC is from a separate debug |
3648 | info file. */ | |
3649 | if ((sec->flags & SEC_ALLOC) == 0) | |
699733f6 AM |
3650 | break; |
3651 | if ((sec->flags & SEC_CODE) != 0) | |
3652 | s->section = sec; | |
3653 | } | |
6ba2a415 | 3654 | s->flags |= BSF_SYNTHETIC; |
699733f6 AM |
3655 | s->value = ent - s->section->vma; |
3656 | s->name = names; | |
3657 | *names++ = '.'; | |
3658 | len = strlen (syms[i]->name); | |
3659 | memcpy (names, syms[i]->name, len + 1); | |
3660 | names += len + 1; | |
6f610d07 UW |
3661 | /* Have udata.p point back to the original symbol this |
3662 | synthetic symbol was derived from. */ | |
3663 | s->udata.p = syms[i]; | |
699733f6 | 3664 | s++; |
90e3cdf2 | 3665 | } |
90e3cdf2 | 3666 | } |
699733f6 | 3667 | free (contents); |
468392fb AM |
3668 | |
3669 | if (glink != NULL && relplt != NULL) | |
3670 | { | |
3671 | if (resolv_vma) | |
3672 | { | |
3673 | /* Add a symbol for the main glink trampoline. */ | |
86a4952b | 3674 | memset (s, 0, sizeof *s); |
468392fb | 3675 | s->the_bfd = abfd; |
6ba2a415 | 3676 | s->flags = BSF_GLOBAL | BSF_SYNTHETIC; |
468392fb AM |
3677 | s->section = glink; |
3678 | s->value = resolv_vma - glink->vma; | |
3679 | s->name = names; | |
3680 | memcpy (names, "__glink_PLTresolve", sizeof ("__glink_PLTresolve")); | |
3681 | names += sizeof ("__glink_PLTresolve"); | |
3682 | s++; | |
3683 | count++; | |
3684 | } | |
3685 | ||
3686 | /* FIXME: It would be very much nicer to put sym@plt on the | |
3687 | stub rather than on the glink branch table entry. The | |
3688 | objdump disassembler would then use a sensible symbol | |
3689 | name on plt calls. The difficulty in doing so is | |
3690 | a) finding the stubs, and, | |
3691 | b) matching stubs against plt entries, and, | |
3692 | c) there can be multiple stubs for a given plt entry. | |
3693 | ||
3694 | Solving (a) could be done by code scanning, but older | |
3695 | ppc64 binaries used different stubs to current code. | |
3696 | (b) is the tricky one since you need to known the toc | |
3697 | pointer for at least one function that uses a pic stub to | |
3698 | be able to calculate the plt address referenced. | |
3699 | (c) means gdb would need to set multiple breakpoints (or | |
3700 | find the glink branch itself) when setting breakpoints | |
3701 | for pending shared library loads. */ | |
3702 | p = relplt->relocation; | |
3703 | for (i = 0; i < plt_count; i++, p++) | |
3704 | { | |
3705 | size_t len; | |
3706 | ||
3707 | *s = **p->sym_ptr_ptr; | |
3708 | /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since | |
3709 | we are defining a symbol, ensure one of them is set. */ | |
3710 | if ((s->flags & BSF_LOCAL) == 0) | |
3711 | s->flags |= BSF_GLOBAL; | |
6ba2a415 | 3712 | s->flags |= BSF_SYNTHETIC; |
468392fb AM |
3713 | s->section = glink; |
3714 | s->value = glink_vma - glink->vma; | |
3715 | s->name = names; | |
3716 | s->udata.p = NULL; | |
3717 | len = strlen ((*p->sym_ptr_ptr)->name); | |
3718 | memcpy (names, (*p->sym_ptr_ptr)->name, len); | |
3719 | names += len; | |
e054468f AM |
3720 | if (p->addend != 0) |
3721 | { | |
3722 | memcpy (names, "+0x", sizeof ("+0x") - 1); | |
3723 | names += sizeof ("+0x") - 1; | |
3724 | bfd_sprintf_vma (abfd, names, p->addend); | |
3725 | names += strlen (names); | |
3726 | } | |
468392fb AM |
3727 | memcpy (names, "@plt", sizeof ("@plt")); |
3728 | names += sizeof ("@plt"); | |
3729 | s++; | |
b9e5796b AM |
3730 | if (abi < 2) |
3731 | { | |
3732 | glink_vma += 8; | |
3733 | if (i >= 0x8000) | |
3734 | glink_vma += 4; | |
3735 | } | |
3736 | else | |
468392fb AM |
3737 | glink_vma += 4; |
3738 | } | |
3739 | count += plt_count; | |
3740 | } | |
90e3cdf2 JJ |
3741 | } |
3742 | ||
c9727e01 | 3743 | done: |
a7535cf3 | 3744 | free (syms); |
90e3cdf2 JJ |
3745 | return count; |
3746 | } | |
5bd4f169 | 3747 | \f |
65f38f15 AM |
3748 | /* The following functions are specific to the ELF linker, while |
3749 | functions above are used generally. Those named ppc64_elf_* are | |
3750 | called by the main ELF linker code. They appear in this file more | |
3751 | or less in the order in which they are called. eg. | |
3752 | ppc64_elf_check_relocs is called early in the link process, | |
3753 | ppc64_elf_finish_dynamic_sections is one of the last functions | |
e86ce104 AM |
3754 | called. |
3755 | ||
3756 | PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that | |
3757 | functions have both a function code symbol and a function descriptor | |
3758 | symbol. A call to foo in a relocatable object file looks like: | |
3759 | ||
3760 | . .text | |
3761 | . x: | |
3762 | . bl .foo | |
3763 | . nop | |
3764 | ||
3765 | The function definition in another object file might be: | |
3766 | ||
3767 | . .section .opd | |
3768 | . foo: .quad .foo | |
3769 | . .quad .TOC.@tocbase | |
3770 | . .quad 0 | |
3771 | . | |
3772 | . .text | |
3773 | . .foo: blr | |
3774 | ||
3775 | When the linker resolves the call during a static link, the branch | |
3776 | unsurprisingly just goes to .foo and the .opd information is unused. | |
3777 | If the function definition is in a shared library, things are a little | |
3778 | different: The call goes via a plt call stub, the opd information gets | |
3779 | copied to the plt, and the linker patches the nop. | |
3780 | ||
3781 | . x: | |
3782 | . bl .foo_stub | |
3783 | . ld 2,40(1) | |
3784 | . | |
3785 | . | |
3786 | . .foo_stub: | |
71a39c98 AM |
3787 | . std 2,40(1) # in practice, the call stub |
3788 | . addis 11,2,Lfoo@toc@ha # is slightly optimized, but | |
3789 | . addi 11,11,Lfoo@toc@l # this is the general idea | |
3790 | . ld 12,0(11) | |
3791 | . ld 2,8(11) | |
3792 | . mtctr 12 | |
3793 | . ld 11,16(11) | |
e86ce104 AM |
3794 | . bctr |
3795 | . | |
3796 | . .section .plt | |
3797 | . Lfoo: reloc (R_PPC64_JMP_SLOT, foo) | |
3798 | ||
3799 | The "reloc ()" notation is supposed to indicate that the linker emits | |
3800 | an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd | |
3801 | copying. | |
3802 | ||
3803 | What are the difficulties here? Well, firstly, the relocations | |
3804 | examined by the linker in check_relocs are against the function code | |
3805 | sym .foo, while the dynamic relocation in the plt is emitted against | |
3806 | the function descriptor symbol, foo. Somewhere along the line, we need | |
3807 | to carefully copy dynamic link information from one symbol to the other. | |
3808 | Secondly, the generic part of the elf linker will make .foo a dynamic | |
3809 | symbol as is normal for most other backends. We need foo dynamic | |
3810 | instead, at least for an application final link. However, when | |
3811 | creating a shared library containing foo, we need to have both symbols | |
3812 | dynamic so that references to .foo are satisfied during the early | |
3813 | stages of linking. Otherwise the linker might decide to pull in a | |
8387904d AM |
3814 | definition from some other object, eg. a static library. |
3815 | ||
3816 | Update: As of August 2004, we support a new convention. Function | |
3817 | calls may use the function descriptor symbol, ie. "bl foo". This | |
3818 | behaves exactly as "bl .foo". */ | |
65f38f15 | 3819 | |
7c8bbca5 AM |
3820 | /* Of those relocs that might be copied as dynamic relocs, this |
3821 | function selects those that must be copied when linking a shared | |
3822 | library or PIE, even when the symbol is local. */ | |
65f38f15 | 3823 | |
1d483afe AM |
3824 | static int |
3825 | must_be_dyn_reloc (struct bfd_link_info *info, | |
3826 | enum elf_ppc64_reloc_type r_type) | |
3827 | { | |
3828 | switch (r_type) | |
3829 | { | |
3830 | default: | |
7c8bbca5 AM |
3831 | /* Only relative relocs can be resolved when the object load |
3832 | address isn't fixed. DTPREL64 is excluded because the | |
3833 | dynamic linker needs to differentiate global dynamic from | |
3834 | local dynamic __tls_index pairs when PPC64_OPT_TLS is set. */ | |
1d483afe AM |
3835 | return 1; |
3836 | ||
3837 | case R_PPC64_REL32: | |
3838 | case R_PPC64_REL64: | |
3839 | case R_PPC64_REL30: | |
3840 | return 0; | |
3841 | ||
3842 | case R_PPC64_TPREL16: | |
3843 | case R_PPC64_TPREL16_LO: | |
3844 | case R_PPC64_TPREL16_HI: | |
3845 | case R_PPC64_TPREL16_HA: | |
3846 | case R_PPC64_TPREL16_DS: | |
3847 | case R_PPC64_TPREL16_LO_DS: | |
f9c6b907 AM |
3848 | case R_PPC64_TPREL16_HIGH: |
3849 | case R_PPC64_TPREL16_HIGHA: | |
1d483afe AM |
3850 | case R_PPC64_TPREL16_HIGHER: |
3851 | case R_PPC64_TPREL16_HIGHERA: | |
3852 | case R_PPC64_TPREL16_HIGHEST: | |
3853 | case R_PPC64_TPREL16_HIGHESTA: | |
3854 | case R_PPC64_TPREL64: | |
7c8bbca5 AM |
3855 | /* These relocations are relative but in a shared library the |
3856 | linker doesn't know the thread pointer base. */ | |
3857 | return bfd_link_dll (info); | |
1d483afe AM |
3858 | } |
3859 | } | |
65f38f15 | 3860 | |
f4656909 AM |
3861 | /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid |
3862 | copying dynamic variables from a shared lib into an app's dynbss | |
3863 | section, and instead use a dynamic relocation to point into the | |
5d35169e AM |
3864 | shared lib. With code that gcc generates, it's vital that this be |
3865 | enabled; In the PowerPC64 ABI, the address of a function is actually | |
3866 | the address of a function descriptor, which resides in the .opd | |
3867 | section. gcc uses the descriptor directly rather than going via the | |
3868 | GOT as some other ABI's do, which means that initialized function | |
3869 | pointers must reference the descriptor. Thus, a function pointer | |
3870 | initialized to the address of a function in a shared library will | |
3871 | either require a copy reloc, or a dynamic reloc. Using a copy reloc | |
4cc11e76 | 3872 | redefines the function descriptor symbol to point to the copy. This |
5d35169e AM |
3873 | presents a problem as a plt entry for that function is also |
3874 | initialized from the function descriptor symbol and the copy reloc | |
3875 | may not be initialized first. */ | |
a23b6845 | 3876 | #define ELIMINATE_COPY_RELOCS 1 |
f4656909 | 3877 | |
721956f4 | 3878 | /* Section name for stubs is the associated section name plus this |
29942be8 NC |
3879 | string. */ |
3880 | #define STUB_SUFFIX ".stub" | |
721956f4 AM |
3881 | |
3882 | /* Linker stubs. | |
3883 | ppc_stub_long_branch: | |
3884 | Used when a 14 bit branch (or even a 24 bit branch) can't reach its | |
3885 | destination, but a 24 bit branch in a stub section will reach. | |
3886 | . b dest | |
3887 | ||
3888 | ppc_stub_plt_branch: | |
3889 | Similar to the above, but a 24 bit branch in the stub section won't | |
3890 | reach its destination. | |
71a39c98 AM |
3891 | . addis %r11,%r2,xxx@toc@ha |
3892 | . ld %r12,xxx@toc@l(%r11) | |
3893 | . mtctr %r12 | |
721956f4 AM |
3894 | . bctr |
3895 | ||
3896 | ppc_stub_plt_call: | |
2c66dc6c AM |
3897 | Used to call a function in a shared library. If it so happens that |
3898 | the plt entry referenced crosses a 64k boundary, then an extra | |
71a39c98 | 3899 | "addi %r11,%r11,xxx@toc@l" will be inserted before the "mtctr". |
721956f4 | 3900 | . std %r2,40(%r1) |
71a39c98 AM |
3901 | . addis %r11,%r2,xxx@toc@ha |
3902 | . ld %r12,xxx+0@toc@l(%r11) | |
3903 | . mtctr %r12 | |
3904 | . ld %r2,xxx+8@toc@l(%r11) | |
3905 | . ld %r11,xxx+16@toc@l(%r11) | |
721956f4 | 3906 | . bctr |
ad8e1ba5 AM |
3907 | |
3908 | ppc_stub_long_branch and ppc_stub_plt_branch may also have additional | |
3909 | code to adjust the value and save r2 to support multiple toc sections. | |
3910 | A ppc_stub_long_branch with an r2 offset looks like: | |
3911 | . std %r2,40(%r1) | |
3912 | . addis %r2,%r2,off@ha | |
3913 | . addi %r2,%r2,off@l | |
3914 | . b dest | |
3915 | ||
3916 | A ppc_stub_plt_branch with an r2 offset looks like: | |
3917 | . std %r2,40(%r1) | |
71a39c98 AM |
3918 | . addis %r11,%r2,xxx@toc@ha |
3919 | . ld %r12,xxx@toc@l(%r11) | |
ad8e1ba5 AM |
3920 | . addis %r2,%r2,off@ha |
3921 | . addi %r2,%r2,off@l | |
71a39c98 | 3922 | . mtctr %r12 |
ad8e1ba5 | 3923 | . bctr |
ac2df442 AM |
3924 | |
3925 | In cases where the "addis" instruction would add zero, the "addis" is | |
3926 | omitted and following instructions modified slightly in some cases. | |
721956f4 AM |
3927 | */ |
3928 | ||
3929 | enum ppc_stub_type { | |
3930 | ppc_stub_none, | |
3931 | ppc_stub_long_branch, | |
ad8e1ba5 | 3932 | ppc_stub_long_branch_r2off, |
721956f4 | 3933 | ppc_stub_plt_branch, |
ad8e1ba5 | 3934 | ppc_stub_plt_branch_r2off, |
794e51c0 | 3935 | ppc_stub_plt_call, |
7341d5e2 | 3936 | ppc_stub_plt_call_r2save, |
a4b6fadd AM |
3937 | ppc_stub_global_entry, |
3938 | ppc_stub_save_res | |
721956f4 AM |
3939 | }; |
3940 | ||
6f20ed8a AM |
3941 | /* Information on stub grouping. */ |
3942 | struct map_stub | |
3943 | { | |
3944 | /* The stub section. */ | |
3945 | asection *stub_sec; | |
3946 | /* This is the section to which stubs in the group will be attached. */ | |
3947 | asection *link_sec; | |
a4b6fadd AM |
3948 | /* Next group. */ |
3949 | struct map_stub *next; | |
3950 | /* Whether to emit a copy of register save/restore functions in this | |
3951 | group. */ | |
3952 | int needs_save_res; | |
d4aaa2a0 AM |
3953 | /* The offset of the __tls_get_addr_opt plt stub bctrl in this group, |
3954 | or -1u if no such stub with bctrl exists. */ | |
3955 | unsigned int tls_get_addr_opt_bctrl; | |
6f20ed8a AM |
3956 | }; |
3957 | ||
721956f4 AM |
3958 | struct ppc_stub_hash_entry { |
3959 | ||
3960 | /* Base hash table entry structure. */ | |
3961 | struct bfd_hash_entry root; | |
3962 | ||
ad8e1ba5 AM |
3963 | enum ppc_stub_type stub_type; |
3964 | ||
6f20ed8a AM |
3965 | /* Group information. */ |
3966 | struct map_stub *group; | |
721956f4 AM |
3967 | |
3968 | /* Offset within stub_sec of the beginning of this stub. */ | |
3969 | bfd_vma stub_offset; | |
3970 | ||
3971 | /* Given the symbol's value and its section we can determine its final | |
3972 | value when building the stubs (so the stub knows where to jump. */ | |
3973 | bfd_vma target_value; | |
3974 | asection *target_section; | |
3975 | ||
721956f4 AM |
3976 | /* The symbol table entry, if any, that this was derived from. */ |
3977 | struct ppc_link_hash_entry *h; | |
e054468f | 3978 | struct plt_entry *plt_ent; |
721956f4 | 3979 | |
6911b7dc AM |
3980 | /* Symbol st_other. */ |
3981 | unsigned char other; | |
721956f4 AM |
3982 | }; |
3983 | ||
3984 | struct ppc_branch_hash_entry { | |
3985 | ||
3986 | /* Base hash table entry structure. */ | |
3987 | struct bfd_hash_entry root; | |
3988 | ||
c456f082 | 3989 | /* Offset within branch lookup table. */ |
721956f4 AM |
3990 | unsigned int offset; |
3991 | ||
3992 | /* Generation marker. */ | |
3993 | unsigned int iter; | |
3994 | }; | |
65f38f15 | 3995 | |
19e08130 AM |
3996 | /* Used to track dynamic relocations for local symbols. */ |
3997 | struct ppc_dyn_relocs | |
3998 | { | |
3999 | struct ppc_dyn_relocs *next; | |
4000 | ||
4001 | /* The input section of the reloc. */ | |
4002 | asection *sec; | |
4003 | ||
4004 | /* Total number of relocs copied for the input section. */ | |
4005 | unsigned int count : 31; | |
4006 | ||
4007 | /* Whether this entry is for STT_GNU_IFUNC symbols. */ | |
4008 | unsigned int ifunc : 1; | |
4009 | }; | |
4010 | ||
65f38f15 AM |
4011 | struct ppc_link_hash_entry |
4012 | { | |
4013 | struct elf_link_hash_entry elf; | |
4014 | ||
b3fac117 AM |
4015 | union { |
4016 | /* A pointer to the most recently used stub hash entry against this | |
4017 | symbol. */ | |
4018 | struct ppc_stub_hash_entry *stub_cache; | |
4019 | ||
4020 | /* A pointer to the next symbol starting with a '.' */ | |
4021 | struct ppc_link_hash_entry *next_dot_sym; | |
4022 | } u; | |
721956f4 | 4023 | |
65f38f15 | 4024 | /* Track dynamic relocs copied for this symbol. */ |
6061a67d | 4025 | struct elf_dyn_relocs *dyn_relocs; |
e86ce104 | 4026 | |
721956f4 | 4027 | /* Link between function code and descriptor symbols. */ |
34814b9f | 4028 | struct ppc_link_hash_entry *oh; |
721956f4 | 4029 | |
e86ce104 AM |
4030 | /* Flag function code and descriptor symbols. */ |
4031 | unsigned int is_func:1; | |
4032 | unsigned int is_func_descriptor:1; | |
908b32fc | 4033 | unsigned int fake:1; |
411e1bfb | 4034 | |
c5614fa4 AM |
4035 | /* Whether global opd/toc sym has been adjusted or not. |
4036 | After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag | |
4037 | should be set for all globals defined in any opd/toc section. */ | |
754021d0 AM |
4038 | unsigned int adjust_done:1; |
4039 | ||
a4b6fadd AM |
4040 | /* Set if this is an out-of-line register save/restore function, |
4041 | with non-standard calling convention. */ | |
4042 | unsigned int save_res:1; | |
4043 | ||
8b5f1ed8 AM |
4044 | /* Set if a duplicate symbol with non-zero localentry is detected, |
4045 | even when the duplicate symbol does not provide a definition. */ | |
4046 | unsigned int non_zero_localentry:1; | |
4047 | ||
411e1bfb | 4048 | /* Contexts in which symbol is used in the GOT (or TOC). |
e7b938ca AM |
4049 | TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the |
4050 | corresponding relocs are encountered during check_relocs. | |
4051 | tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to | |
4052 | indicate the corresponding GOT entry type is not needed. | |
4053 | tls_optimize may also set TLS_TPRELGD when a GD reloc turns into | |
4054 | a TPREL one. We use a separate flag rather than setting TPREL | |
4055 | just for convenience in distinguishing the two cases. */ | |
4056 | #define TLS_GD 1 /* GD reloc. */ | |
4057 | #define TLS_LD 2 /* LD reloc. */ | |
4058 | #define TLS_TPREL 4 /* TPREL reloc, => IE. */ | |
4059 | #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */ | |
4060 | #define TLS_TLS 16 /* Any TLS reloc. */ | |
4061 | #define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */ | |
4062 | #define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */ | |
e054468f | 4063 | #define PLT_IFUNC 128 /* STT_GNU_IFUNC. */ |
f961d9dd | 4064 | unsigned char tls_mask; |
65f38f15 AM |
4065 | }; |
4066 | ||
4067 | /* ppc64 ELF linker hash table. */ | |
4068 | ||
4069 | struct ppc_link_hash_table | |
4070 | { | |
4071 | struct elf_link_hash_table elf; | |
4072 | ||
721956f4 AM |
4073 | /* The stub hash table. */ |
4074 | struct bfd_hash_table stub_hash_table; | |
4075 | ||
4076 | /* Another hash table for plt_branch stubs. */ | |
4077 | struct bfd_hash_table branch_hash_table; | |
4078 | ||
3b421ab3 AM |
4079 | /* Hash table for function prologue tocsave. */ |
4080 | htab_t tocsave_htab; | |
4081 | ||
e7d1c40c AM |
4082 | /* Various options and other info passed from the linker. */ |
4083 | struct ppc64_elf_params *params; | |
721956f4 | 4084 | |
6f20ed8a AM |
4085 | /* The size of sec_info below. */ |
4086 | unsigned int sec_info_arr_size; | |
4087 | ||
4088 | /* Per-section array of extra section info. Done this way rather | |
4089 | than as part of ppc64_elf_section_data so we have the info for | |
4090 | non-ppc64 sections. */ | |
4091 | struct | |
4092 | { | |
4093 | /* Along with elf_gp, specifies the TOC pointer used by this section. */ | |
ad8e1ba5 | 4094 | bfd_vma toc_off; |
6f20ed8a AM |
4095 | |
4096 | union | |
4097 | { | |
4098 | /* The section group that this section belongs to. */ | |
4099 | struct map_stub *group; | |
4100 | /* A temp section list pointer. */ | |
4101 | asection *list; | |
4102 | } u; | |
4103 | } *sec_info; | |
721956f4 | 4104 | |
a4b6fadd AM |
4105 | /* Linked list of groups. */ |
4106 | struct map_stub *group; | |
4107 | ||
ad8e1ba5 AM |
4108 | /* Temp used when calculating TOC pointers. */ |
4109 | bfd_vma toc_curr; | |
bf102f86 AM |
4110 | bfd *toc_bfd; |
4111 | asection *toc_first_sec; | |
ad8e1ba5 | 4112 | |
b3fac117 AM |
4113 | /* Used when adding symbols. */ |
4114 | struct ppc_link_hash_entry *dot_syms; | |
4115 | ||
33e44f2e | 4116 | /* Shortcuts to get to dynamic linker sections. */ |
4ce794b7 | 4117 | asection *glink; |
9e390558 | 4118 | asection *global_entry; |
82bd7b59 | 4119 | asection *sfpr; |
4ce794b7 AM |
4120 | asection *brlt; |
4121 | asection *relbrlt; | |
58d180e8 | 4122 | asection *glink_eh_frame; |
ec338859 | 4123 | |
8387904d AM |
4124 | /* Shortcut to .__tls_get_addr and __tls_get_addr. */ |
4125 | struct ppc_link_hash_entry *tls_get_addr; | |
4126 | struct ppc_link_hash_entry *tls_get_addr_fd; | |
411e1bfb | 4127 | |
927be08e AM |
4128 | /* The size of reliplt used by got entry relocs. */ |
4129 | bfd_size_type got_reli_size; | |
4130 | ||
9b5ecbd0 | 4131 | /* Statistics. */ |
7341d5e2 | 4132 | unsigned long stub_count[ppc_stub_global_entry]; |
9b5ecbd0 | 4133 | |
ee75fd95 AM |
4134 | /* Number of stubs against global syms. */ |
4135 | unsigned long stub_globals; | |
4136 | ||
ee67d69a AM |
4137 | /* Set if we're linking code with function descriptors. */ |
4138 | unsigned int opd_abi:1; | |
4139 | ||
4c52953f | 4140 | /* Support for multiple toc sections. */ |
33c0ec9d | 4141 | unsigned int do_multi_toc:1; |
4c52953f | 4142 | unsigned int multi_toc_needed:1; |
927be08e | 4143 | unsigned int second_toc_pass:1; |
67f0cbdb | 4144 | unsigned int do_toc_opt:1; |
4c52953f | 4145 | |
9a23f96e AM |
4146 | /* Set if tls optimization is enabled. */ |
4147 | unsigned int do_tls_opt:1; | |
4148 | ||
5d1634d7 | 4149 | /* Set on error. */ |
99877b66 | 4150 | unsigned int stub_error:1; |
721956f4 | 4151 | |
8c5b4e52 AM |
4152 | /* Whether func_desc_adjust needs to be run over symbols. */ |
4153 | unsigned int need_func_desc_adj:1; | |
721956f4 | 4154 | |
82e66161 AM |
4155 | /* Whether there exist local gnu indirect function resolvers, |
4156 | referenced by dynamic relocations. */ | |
4157 | unsigned int local_ifunc_resolver:1; | |
4158 | unsigned int maybe_local_ifunc_resolver:1; | |
4159 | ||
f378ab09 AM |
4160 | /* Whether plt calls for ELFv2 localentry:0 funcs have been optimized. */ |
4161 | unsigned int has_plt_localentry0:1; | |
4162 | ||
721956f4 AM |
4163 | /* Incremented every time we size stubs. */ |
4164 | unsigned int stub_iteration; | |
5d1634d7 | 4165 | |
87d72d41 AM |
4166 | /* Small local sym cache. */ |
4167 | struct sym_cache sym_cache; | |
65f38f15 AM |
4168 | }; |
4169 | ||
4c52953f AM |
4170 | /* Rename some of the generic section flags to better document how they |
4171 | are used here. */ | |
b0dddeec AM |
4172 | |
4173 | /* Nonzero if this section has TLS related relocations. */ | |
4174 | #define has_tls_reloc sec_flg0 | |
4175 | ||
4176 | /* Nonzero if this section has a call to __tls_get_addr. */ | |
4177 | #define has_tls_get_addr_call sec_flg1 | |
4178 | ||
4179 | /* Nonzero if this section has any toc or got relocs. */ | |
4180 | #define has_toc_reloc sec_flg2 | |
4181 | ||
4182 | /* Nonzero if this section has a call to another section that uses | |
4183 | the toc or got. */ | |
d77c8a4b | 4184 | #define makes_toc_func_call sec_flg3 |
b0dddeec AM |
4185 | |
4186 | /* Recursion protection when determining above flag. */ | |
d77c8a4b | 4187 | #define call_check_in_progress sec_flg4 |
70cc837d | 4188 | #define call_check_done sec_flg5 |
4c52953f | 4189 | |
65f38f15 AM |
4190 | /* Get the ppc64 ELF linker hash table from a link_info structure. */ |
4191 | ||
4192 | #define ppc_hash_table(p) \ | |
4dfe6ac6 NC |
4193 | (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \ |
4194 | == PPC64_ELF_DATA ? ((struct ppc_link_hash_table *) ((p)->hash)) : NULL) | |
65f38f15 | 4195 | |
721956f4 AM |
4196 | #define ppc_stub_hash_lookup(table, string, create, copy) \ |
4197 | ((struct ppc_stub_hash_entry *) \ | |
4198 | bfd_hash_lookup ((table), (string), (create), (copy))) | |
4199 | ||
4200 | #define ppc_branch_hash_lookup(table, string, create, copy) \ | |
4201 | ((struct ppc_branch_hash_entry *) \ | |
4202 | bfd_hash_lookup ((table), (string), (create), (copy))) | |
4203 | ||
4204 | /* Create an entry in the stub hash table. */ | |
4205 | ||
4206 | static struct bfd_hash_entry * | |
4ce794b7 AM |
4207 | stub_hash_newfunc (struct bfd_hash_entry *entry, |
4208 | struct bfd_hash_table *table, | |
4209 | const char *string) | |
721956f4 AM |
4210 | { |
4211 | /* Allocate the structure if it has not already been allocated by a | |
4212 | subclass. */ | |
4213 | if (entry == NULL) | |
4214 | { | |
4215 | entry = bfd_hash_allocate (table, sizeof (struct ppc_stub_hash_entry)); | |
4216 | if (entry == NULL) | |
4217 | return entry; | |
4218 | } | |
4219 | ||
4220 | /* Call the allocation method of the superclass. */ | |
4221 | entry = bfd_hash_newfunc (entry, table, string); | |
4222 | if (entry != NULL) | |
4223 | { | |
4224 | struct ppc_stub_hash_entry *eh; | |
4225 | ||
4226 | /* Initialize the local fields. */ | |
4227 | eh = (struct ppc_stub_hash_entry *) entry; | |
ad8e1ba5 | 4228 | eh->stub_type = ppc_stub_none; |
6f20ed8a | 4229 | eh->group = NULL; |
721956f4 AM |
4230 | eh->stub_offset = 0; |
4231 | eh->target_value = 0; | |
4232 | eh->target_section = NULL; | |
721956f4 | 4233 | eh->h = NULL; |
6911b7dc | 4234 | eh->plt_ent = NULL; |
6911b7dc | 4235 | eh->other = 0; |
721956f4 AM |
4236 | } |
4237 | ||
4238 | return entry; | |
4239 | } | |
4240 | ||
4241 | /* Create an entry in the branch hash table. */ | |
4242 | ||
4243 | static struct bfd_hash_entry * | |
4ce794b7 AM |
4244 | branch_hash_newfunc (struct bfd_hash_entry *entry, |
4245 | struct bfd_hash_table *table, | |
4246 | const char *string) | |
721956f4 AM |
4247 | { |
4248 | /* Allocate the structure if it has not already been allocated by a | |
4249 | subclass. */ | |
4250 | if (entry == NULL) | |
4251 | { | |
4252 | entry = bfd_hash_allocate (table, sizeof (struct ppc_branch_hash_entry)); | |
4253 | if (entry == NULL) | |
4254 | return entry; | |
4255 | } | |
4256 | ||
4257 | /* Call the allocation method of the superclass. */ | |
4258 | entry = bfd_hash_newfunc (entry, table, string); | |
4259 | if (entry != NULL) | |
4260 | { | |
4261 | struct ppc_branch_hash_entry *eh; | |
4262 | ||
4263 | /* Initialize the local fields. */ | |
4264 | eh = (struct ppc_branch_hash_entry *) entry; | |
4265 | eh->offset = 0; | |
4266 | eh->iter = 0; | |
4267 | } | |
4268 | ||
4269 | return entry; | |
4270 | } | |
4271 | ||
65f38f15 AM |
4272 | /* Create an entry in a ppc64 ELF linker hash table. */ |
4273 | ||
4274 | static struct bfd_hash_entry * | |
4ce794b7 AM |
4275 | link_hash_newfunc (struct bfd_hash_entry *entry, |
4276 | struct bfd_hash_table *table, | |
4277 | const char *string) | |
65f38f15 AM |
4278 | { |
4279 | /* Allocate the structure if it has not already been allocated by a | |
4280 | subclass. */ | |
4281 | if (entry == NULL) | |
4282 | { | |
4283 | entry = bfd_hash_allocate (table, sizeof (struct ppc_link_hash_entry)); | |
4284 | if (entry == NULL) | |
4285 | return entry; | |
4286 | } | |
4287 | ||
4288 | /* Call the allocation method of the superclass. */ | |
4289 | entry = _bfd_elf_link_hash_newfunc (entry, table, string); | |
4290 | if (entry != NULL) | |
4291 | { | |
4292 | struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) entry; | |
4293 | ||
b3fac117 | 4294 | memset (&eh->u.stub_cache, 0, |
908b32fc | 4295 | (sizeof (struct ppc_link_hash_entry) |
b3fac117 AM |
4296 | - offsetof (struct ppc_link_hash_entry, u.stub_cache))); |
4297 | ||
4298 | /* When making function calls, old ABI code references function entry | |
4299 | points (dot symbols), while new ABI code references the function | |
4300 | descriptor symbol. We need to make any combination of reference and | |
4301 | definition work together, without breaking archive linking. | |
4302 | ||
4303 | For a defined function "foo" and an undefined call to "bar": | |
4304 | An old object defines "foo" and ".foo", references ".bar" (possibly | |
4305 | "bar" too). | |
4306 | A new object defines "foo" and references "bar". | |
4307 | ||
4308 | A new object thus has no problem with its undefined symbols being | |
4309 | satisfied by definitions in an old object. On the other hand, the | |
4310 | old object won't have ".bar" satisfied by a new object. | |
4311 | ||
4312 | Keep a list of newly added dot-symbols. */ | |
4313 | ||
4314 | if (string[0] == '.') | |
4315 | { | |
4316 | struct ppc_link_hash_table *htab; | |
4317 | ||
4318 | htab = (struct ppc_link_hash_table *) table; | |
4319 | eh->u.next_dot_sym = htab->dot_syms; | |
4320 | htab->dot_syms = eh; | |
4321 | } | |
65f38f15 AM |
4322 | } |
4323 | ||
4324 | return entry; | |
4325 | } | |
4326 | ||
3b421ab3 AM |
4327 | struct tocsave_entry { |
4328 | asection *sec; | |
4329 | bfd_vma offset; | |
4330 | }; | |
4331 | ||
4332 | static hashval_t | |
4333 | tocsave_htab_hash (const void *p) | |
4334 | { | |
4335 | const struct tocsave_entry *e = (const struct tocsave_entry *) p; | |
4aef7643 | 4336 | return ((bfd_vma) (intptr_t) e->sec ^ e->offset) >> 3; |
3b421ab3 AM |
4337 | } |
4338 | ||
4339 | static int | |
4340 | tocsave_htab_eq (const void *p1, const void *p2) | |
4341 | { | |
4342 | const struct tocsave_entry *e1 = (const struct tocsave_entry *) p1; | |
4343 | const struct tocsave_entry *e2 = (const struct tocsave_entry *) p2; | |
4344 | return e1->sec == e2->sec && e1->offset == e2->offset; | |
4345 | } | |
4346 | ||
68faa637 AM |
4347 | /* Destroy a ppc64 ELF linker hash table. */ |
4348 | ||
4349 | static void | |
d495ab0d | 4350 | ppc64_elf_link_hash_table_free (bfd *obfd) |
68faa637 | 4351 | { |
d495ab0d | 4352 | struct ppc_link_hash_table *htab; |
68faa637 | 4353 | |
d495ab0d | 4354 | htab = (struct ppc_link_hash_table *) obfd->link.hash; |
68faa637 AM |
4355 | if (htab->tocsave_htab) |
4356 | htab_delete (htab->tocsave_htab); | |
d495ab0d AM |
4357 | bfd_hash_table_free (&htab->branch_hash_table); |
4358 | bfd_hash_table_free (&htab->stub_hash_table); | |
4359 | _bfd_elf_link_hash_table_free (obfd); | |
68faa637 AM |
4360 | } |
4361 | ||
65f38f15 AM |
4362 | /* Create a ppc64 ELF linker hash table. */ |
4363 | ||
4364 | static struct bfd_link_hash_table * | |
4ce794b7 | 4365 | ppc64_elf_link_hash_table_create (bfd *abfd) |
65f38f15 AM |
4366 | { |
4367 | struct ppc_link_hash_table *htab; | |
4368 | bfd_size_type amt = sizeof (struct ppc_link_hash_table); | |
4369 | ||
4ce794b7 | 4370 | htab = bfd_zmalloc (amt); |
65f38f15 AM |
4371 | if (htab == NULL) |
4372 | return NULL; | |
4373 | ||
66eb6687 | 4374 | if (!_bfd_elf_link_hash_table_init (&htab->elf, abfd, link_hash_newfunc, |
4dfe6ac6 NC |
4375 | sizeof (struct ppc_link_hash_entry), |
4376 | PPC64_ELF_DATA)) | |
65f38f15 | 4377 | { |
e2d34d7d | 4378 | free (htab); |
65f38f15 AM |
4379 | return NULL; |
4380 | } | |
4381 | ||
721956f4 | 4382 | /* Init the stub hash table too. */ |
66eb6687 AM |
4383 | if (!bfd_hash_table_init (&htab->stub_hash_table, stub_hash_newfunc, |
4384 | sizeof (struct ppc_stub_hash_entry))) | |
2915c55b | 4385 | { |
d495ab0d | 4386 | _bfd_elf_link_hash_table_free (abfd); |
2915c55b JK |
4387 | return NULL; |
4388 | } | |
721956f4 AM |
4389 | |
4390 | /* And the branch hash table. */ | |
66eb6687 AM |
4391 | if (!bfd_hash_table_init (&htab->branch_hash_table, branch_hash_newfunc, |
4392 | sizeof (struct ppc_branch_hash_entry))) | |
2915c55b JK |
4393 | { |
4394 | bfd_hash_table_free (&htab->stub_hash_table); | |
d495ab0d | 4395 | _bfd_elf_link_hash_table_free (abfd); |
2915c55b JK |
4396 | return NULL; |
4397 | } | |
721956f4 | 4398 | |
3b421ab3 AM |
4399 | htab->tocsave_htab = htab_try_create (1024, |
4400 | tocsave_htab_hash, | |
4401 | tocsave_htab_eq, | |
4402 | NULL); | |
4403 | if (htab->tocsave_htab == NULL) | |
2915c55b | 4404 | { |
d495ab0d | 4405 | ppc64_elf_link_hash_table_free (abfd); |
2915c55b JK |
4406 | return NULL; |
4407 | } | |
d495ab0d | 4408 | htab->elf.root.hash_table_free = ppc64_elf_link_hash_table_free; |
3b421ab3 | 4409 | |
3254fd24 AM |
4410 | /* Initializing two fields of the union is just cosmetic. We really |
4411 | only care about glist, but when compiled on a 32-bit host the | |
4412 | bfd_vma fields are larger. Setting the bfd_vma to zero makes | |
4413 | debugger inspection of these fields look nicer. */ | |
a6aa5195 AM |
4414 | htab->elf.init_got_refcount.refcount = 0; |
4415 | htab->elf.init_got_refcount.glist = NULL; | |
4416 | htab->elf.init_plt_refcount.refcount = 0; | |
4417 | htab->elf.init_plt_refcount.glist = NULL; | |
4418 | htab->elf.init_got_offset.offset = 0; | |
4419 | htab->elf.init_got_offset.glist = NULL; | |
4420 | htab->elf.init_plt_offset.offset = 0; | |
4421 | htab->elf.init_plt_offset.glist = NULL; | |
3254fd24 | 4422 | |
65f38f15 AM |
4423 | return &htab->elf.root; |
4424 | } | |
4425 | ||
bfeb4a28 AM |
4426 | /* Create sections for linker generated code. */ |
4427 | ||
4428 | static bfd_boolean | |
4429 | create_linkage_sections (bfd *dynobj, struct bfd_link_info *info) | |
4430 | { | |
4431 | struct ppc_link_hash_table *htab; | |
4432 | flagword flags; | |
4433 | ||
4434 | htab = ppc_hash_table (info); | |
4435 | ||
bfeb4a28 AM |
4436 | flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY |
4437 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
b32547cd AM |
4438 | if (htab->params->save_restore_funcs) |
4439 | { | |
4440 | /* Create .sfpr for code to save and restore fp regs. */ | |
4441 | htab->sfpr = bfd_make_section_anyway_with_flags (dynobj, ".sfpr", | |
4442 | flags); | |
4443 | if (htab->sfpr == NULL | |
4444 | || ! bfd_set_section_alignment (dynobj, htab->sfpr, 2)) | |
4445 | return FALSE; | |
4446 | } | |
4447 | ||
4448 | if (bfd_link_relocatable (info)) | |
4449 | return TRUE; | |
bfeb4a28 AM |
4450 | |
4451 | /* Create .glink for lazy dynamic linking support. */ | |
4452 | htab->glink = bfd_make_section_anyway_with_flags (dynobj, ".glink", | |
4453 | flags); | |
4454 | if (htab->glink == NULL | |
4455 | || ! bfd_set_section_alignment (dynobj, htab->glink, 3)) | |
4456 | return FALSE; | |
4457 | ||
9e390558 AM |
4458 | /* The part of .glink used by global entry stubs, separate so that |
4459 | it can be aligned appropriately without affecting htab->glink. */ | |
4460 | htab->global_entry = bfd_make_section_anyway_with_flags (dynobj, ".glink", | |
4461 | flags); | |
4462 | if (htab->global_entry == NULL | |
4463 | || ! bfd_set_section_alignment (dynobj, htab->global_entry, 2)) | |
4464 | return FALSE; | |
4465 | ||
bfeb4a28 AM |
4466 | if (!info->no_ld_generated_unwind_info) |
4467 | { | |
4468 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS | |
4469 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
4470 | htab->glink_eh_frame = bfd_make_section_anyway_with_flags (dynobj, | |
4471 | ".eh_frame", | |
4472 | flags); | |
4473 | if (htab->glink_eh_frame == NULL | |
4474 | || !bfd_set_section_alignment (dynobj, htab->glink_eh_frame, 2)) | |
4475 | return FALSE; | |
4476 | } | |
4477 | ||
4478 | flags = SEC_ALLOC | SEC_LINKER_CREATED; | |
33e44f2e AM |
4479 | htab->elf.iplt = bfd_make_section_anyway_with_flags (dynobj, ".iplt", flags); |
4480 | if (htab->elf.iplt == NULL | |
4481 | || ! bfd_set_section_alignment (dynobj, htab->elf.iplt, 3)) | |
bfeb4a28 AM |
4482 | return FALSE; |
4483 | ||
4484 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | |
4485 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
33e44f2e AM |
4486 | htab->elf.irelplt |
4487 | = bfd_make_section_anyway_with_flags (dynobj, ".rela.iplt", flags); | |
4488 | if (htab->elf.irelplt == NULL | |
4489 | || ! bfd_set_section_alignment (dynobj, htab->elf.irelplt, 3)) | |
bfeb4a28 AM |
4490 | return FALSE; |
4491 | ||
4492 | /* Create branch lookup table for plt_branch stubs. */ | |
4493 | flags = (SEC_ALLOC | SEC_LOAD | |
4494 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
4495 | htab->brlt = bfd_make_section_anyway_with_flags (dynobj, ".branch_lt", | |
4496 | flags); | |
4497 | if (htab->brlt == NULL | |
4498 | || ! bfd_set_section_alignment (dynobj, htab->brlt, 3)) | |
4499 | return FALSE; | |
4500 | ||
0e1862bb | 4501 | if (!bfd_link_pic (info)) |
bfeb4a28 AM |
4502 | return TRUE; |
4503 | ||
4504 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | |
4505 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
4506 | htab->relbrlt = bfd_make_section_anyway_with_flags (dynobj, | |
4507 | ".rela.branch_lt", | |
4508 | flags); | |
4509 | if (htab->relbrlt == NULL | |
4510 | || ! bfd_set_section_alignment (dynobj, htab->relbrlt, 3)) | |
4511 | return FALSE; | |
4512 | ||
4513 | return TRUE; | |
4514 | } | |
4515 | ||
e717da7e AM |
4516 | /* Satisfy the ELF linker by filling in some fields in our fake bfd. */ |
4517 | ||
bfeb4a28 | 4518 | bfd_boolean |
e7d1c40c AM |
4519 | ppc64_elf_init_stub_bfd (struct bfd_link_info *info, |
4520 | struct ppc64_elf_params *params) | |
e717da7e AM |
4521 | { |
4522 | struct ppc_link_hash_table *htab; | |
4523 | ||
e7d1c40c | 4524 | elf_elfheader (params->stub_bfd)->e_ident[EI_CLASS] = ELFCLASS64; |
e717da7e AM |
4525 | |
4526 | /* Always hook our dynamic sections into the first bfd, which is the | |
4527 | linker created stub bfd. This ensures that the GOT header is at | |
4528 | the start of the output TOC section. */ | |
4529 | htab = ppc_hash_table (info); | |
e7d1c40c AM |
4530 | htab->elf.dynobj = params->stub_bfd; |
4531 | htab->params = params; | |
bfeb4a28 | 4532 | |
bfeb4a28 | 4533 | return create_linkage_sections (htab->elf.dynobj, info); |
e717da7e AM |
4534 | } |
4535 | ||
721956f4 AM |
4536 | /* Build a name for an entry in the stub hash table. */ |
4537 | ||
4538 | static char * | |
4ce794b7 AM |
4539 | ppc_stub_name (const asection *input_section, |
4540 | const asection *sym_sec, | |
4541 | const struct ppc_link_hash_entry *h, | |
4542 | const Elf_Internal_Rela *rel) | |
721956f4 AM |
4543 | { |
4544 | char *stub_name; | |
bcaa2f82 | 4545 | ssize_t len; |
721956f4 AM |
4546 | |
4547 | /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31 | |
4548 | offsets from a sym as a branch target? In fact, we could | |
4549 | probably assume the addend is always zero. */ | |
4550 | BFD_ASSERT (((int) rel->r_addend & 0xffffffff) == rel->r_addend); | |
4551 | ||
4552 | if (h) | |
4553 | { | |
4554 | len = 8 + 1 + strlen (h->elf.root.root.string) + 1 + 8 + 1; | |
4555 | stub_name = bfd_malloc (len); | |
46de2a7c AM |
4556 | if (stub_name == NULL) |
4557 | return stub_name; | |
4558 | ||
bcaa2f82 AM |
4559 | len = sprintf (stub_name, "%08x.%s+%x", |
4560 | input_section->id & 0xffffffff, | |
4561 | h->elf.root.root.string, | |
4562 | (int) rel->r_addend & 0xffffffff); | |
721956f4 AM |
4563 | } |
4564 | else | |
4565 | { | |
ad8e1ba5 | 4566 | len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1; |
721956f4 | 4567 | stub_name = bfd_malloc (len); |
46de2a7c AM |
4568 | if (stub_name == NULL) |
4569 | return stub_name; | |
4570 | ||
bcaa2f82 AM |
4571 | len = sprintf (stub_name, "%08x.%x:%x+%x", |
4572 | input_section->id & 0xffffffff, | |
4573 | sym_sec->id & 0xffffffff, | |
4574 | (int) ELF64_R_SYM (rel->r_info) & 0xffffffff, | |
4575 | (int) rel->r_addend & 0xffffffff); | |
721956f4 | 4576 | } |
bcaa2f82 | 4577 | if (len > 2 && stub_name[len - 2] == '+' && stub_name[len - 1] == '0') |
ee75fd95 | 4578 | stub_name[len - 2] = 0; |
721956f4 AM |
4579 | return stub_name; |
4580 | } | |
4581 | ||
4582 | /* Look up an entry in the stub hash. Stub entries are cached because | |
4583 | creating the stub name takes a bit of time. */ | |
4584 | ||
4585 | static struct ppc_stub_hash_entry * | |
4ce794b7 AM |
4586 | ppc_get_stub_entry (const asection *input_section, |
4587 | const asection *sym_sec, | |
039b3fef | 4588 | struct ppc_link_hash_entry *h, |
4ce794b7 AM |
4589 | const Elf_Internal_Rela *rel, |
4590 | struct ppc_link_hash_table *htab) | |
721956f4 AM |
4591 | { |
4592 | struct ppc_stub_hash_entry *stub_entry; | |
6f20ed8a | 4593 | struct map_stub *group; |
721956f4 AM |
4594 | |
4595 | /* If this input section is part of a group of sections sharing one | |
4596 | stub section, then use the id of the first section in the group. | |
4597 | Stub names need to include a section id, as there may well be | |
4598 | more than one stub used to reach say, printf, and we need to | |
4599 | distinguish between them. */ | |
6f20ed8a | 4600 | group = htab->sec_info[input_section->id].u.group; |
89d77b8a AM |
4601 | if (group == NULL) |
4602 | return NULL; | |
721956f4 | 4603 | |
b3fac117 AM |
4604 | if (h != NULL && h->u.stub_cache != NULL |
4605 | && h->u.stub_cache->h == h | |
6f20ed8a | 4606 | && h->u.stub_cache->group == group) |
721956f4 | 4607 | { |
b3fac117 | 4608 | stub_entry = h->u.stub_cache; |
721956f4 AM |
4609 | } |
4610 | else | |
4611 | { | |
4612 | char *stub_name; | |
4613 | ||
6f20ed8a | 4614 | stub_name = ppc_stub_name (group->link_sec, sym_sec, h, rel); |
721956f4 AM |
4615 | if (stub_name == NULL) |
4616 | return NULL; | |
4617 | ||
4618 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, | |
b34976b6 | 4619 | stub_name, FALSE, FALSE); |
721956f4 | 4620 | if (h != NULL) |
b3fac117 | 4621 | h->u.stub_cache = stub_entry; |
721956f4 AM |
4622 | |
4623 | free (stub_name); | |
4624 | } | |
4625 | ||
4626 | return stub_entry; | |
4627 | } | |
4628 | ||
4629 | /* Add a new stub entry to the stub hash. Not all fields of the new | |
4630 | stub entry are initialised. */ | |
4631 | ||
4632 | static struct ppc_stub_hash_entry * | |
4ce794b7 AM |
4633 | ppc_add_stub (const char *stub_name, |
4634 | asection *section, | |
25f53a85 | 4635 | struct bfd_link_info *info) |
721956f4 | 4636 | { |
25f53a85 | 4637 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
6f20ed8a | 4638 | struct map_stub *group; |
721956f4 AM |
4639 | asection *link_sec; |
4640 | asection *stub_sec; | |
4641 | struct ppc_stub_hash_entry *stub_entry; | |
4642 | ||
6f20ed8a AM |
4643 | group = htab->sec_info[section->id].u.group; |
4644 | link_sec = group->link_sec; | |
4645 | stub_sec = group->stub_sec; | |
721956f4 AM |
4646 | if (stub_sec == NULL) |
4647 | { | |
6f20ed8a AM |
4648 | size_t namelen; |
4649 | bfd_size_type len; | |
4650 | char *s_name; | |
721956f4 | 4651 | |
6f20ed8a AM |
4652 | namelen = strlen (link_sec->name); |
4653 | len = namelen + sizeof (STUB_SUFFIX); | |
4654 | s_name = bfd_alloc (htab->params->stub_bfd, len); | |
4655 | if (s_name == NULL) | |
4656 | return NULL; | |
721956f4 | 4657 | |
6f20ed8a AM |
4658 | memcpy (s_name, link_sec->name, namelen); |
4659 | memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX)); | |
4660 | stub_sec = (*htab->params->add_stub_section) (s_name, link_sec); | |
4661 | if (stub_sec == NULL) | |
4662 | return NULL; | |
4663 | group->stub_sec = stub_sec; | |
721956f4 AM |
4664 | } |
4665 | ||
4666 | /* Enter this entry into the linker stub hash table. */ | |
4667 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, stub_name, | |
b34976b6 | 4668 | TRUE, FALSE); |
721956f4 AM |
4669 | if (stub_entry == NULL) |
4670 | { | |
695344c0 | 4671 | /* xgettext:c-format */ |
cf97bcb0 AM |
4672 | _bfd_error_handler (_("%pB: cannot create stub entry %s"), |
4673 | section->owner, stub_name); | |
721956f4 AM |
4674 | return NULL; |
4675 | } | |
4676 | ||
6f20ed8a | 4677 | stub_entry->group = group; |
721956f4 | 4678 | stub_entry->stub_offset = 0; |
721956f4 AM |
4679 | return stub_entry; |
4680 | } | |
4681 | ||
e717da7e AM |
4682 | /* Create .got and .rela.got sections in ABFD, and .got in dynobj if |
4683 | not already done. */ | |
65f38f15 | 4684 | |
b34976b6 | 4685 | static bfd_boolean |
e717da7e | 4686 | create_got_section (bfd *abfd, struct bfd_link_info *info) |
65f38f15 | 4687 | { |
e717da7e AM |
4688 | asection *got, *relgot; |
4689 | flagword flags; | |
4690 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
65f38f15 | 4691 | |
0c8d6e5c | 4692 | if (!is_ppc64_elf (abfd)) |
0ffa91dd | 4693 | return FALSE; |
4dfe6ac6 NC |
4694 | if (htab == NULL) |
4695 | return FALSE; | |
0ffa91dd | 4696 | |
33e44f2e AM |
4697 | if (!htab->elf.sgot |
4698 | && !_bfd_elf_create_got_section (htab->elf.dynobj, info)) | |
4699 | return FALSE; | |
e717da7e AM |
4700 | |
4701 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY | |
4702 | | SEC_LINKER_CREATED); | |
4703 | ||
c456f082 | 4704 | got = bfd_make_section_anyway_with_flags (abfd, ".got", flags); |
e717da7e | 4705 | if (!got |
e717da7e AM |
4706 | || !bfd_set_section_alignment (abfd, got, 3)) |
4707 | return FALSE; | |
65f38f15 | 4708 | |
c456f082 AM |
4709 | relgot = bfd_make_section_anyway_with_flags (abfd, ".rela.got", |
4710 | flags | SEC_READONLY); | |
e717da7e | 4711 | if (!relgot |
e717da7e | 4712 | || ! bfd_set_section_alignment (abfd, relgot, 3)) |
b34976b6 | 4713 | return FALSE; |
e717da7e AM |
4714 | |
4715 | ppc64_elf_tdata (abfd)->got = got; | |
4716 | ppc64_elf_tdata (abfd)->relgot = relgot; | |
b34976b6 | 4717 | return TRUE; |
65f38f15 | 4718 | } |
5bd4f169 | 4719 | |
b31867b6 AM |
4720 | /* Follow indirect and warning symbol links. */ |
4721 | ||
4722 | static inline struct bfd_link_hash_entry * | |
4723 | follow_link (struct bfd_link_hash_entry *h) | |
4724 | { | |
4725 | while (h->type == bfd_link_hash_indirect | |
4726 | || h->type == bfd_link_hash_warning) | |
4727 | h = h->u.i.link; | |
4728 | return h; | |
4729 | } | |
4730 | ||
4731 | static inline struct elf_link_hash_entry * | |
4732 | elf_follow_link (struct elf_link_hash_entry *h) | |
4733 | { | |
4734 | return (struct elf_link_hash_entry *) follow_link (&h->root); | |
4735 | } | |
4736 | ||
4737 | static inline struct ppc_link_hash_entry * | |
4738 | ppc_follow_link (struct ppc_link_hash_entry *h) | |
4739 | { | |
4740 | return (struct ppc_link_hash_entry *) follow_link (&h->elf.root); | |
4741 | } | |
4742 | ||
40d16e0b AM |
4743 | /* Merge PLT info on FROM with that on TO. */ |
4744 | ||
4745 | static void | |
4746 | move_plt_plist (struct ppc_link_hash_entry *from, | |
4747 | struct ppc_link_hash_entry *to) | |
4748 | { | |
4749 | if (from->elf.plt.plist != NULL) | |
4750 | { | |
4751 | if (to->elf.plt.plist != NULL) | |
4752 | { | |
4753 | struct plt_entry **entp; | |
4754 | struct plt_entry *ent; | |
4755 | ||
4756 | for (entp = &from->elf.plt.plist; (ent = *entp) != NULL; ) | |
4757 | { | |
4758 | struct plt_entry *dent; | |
4759 | ||
4760 | for (dent = to->elf.plt.plist; dent != NULL; dent = dent->next) | |
4761 | if (dent->addend == ent->addend) | |
4762 | { | |
4763 | dent->plt.refcount += ent->plt.refcount; | |
4764 | *entp = ent->next; | |
4765 | break; | |
4766 | } | |
4767 | if (dent == NULL) | |
4768 | entp = &ent->next; | |
4769 | } | |
4770 | *entp = to->elf.plt.plist; | |
4771 | } | |
4772 | ||
4773 | to->elf.plt.plist = from->elf.plt.plist; | |
4774 | from->elf.plt.plist = NULL; | |
4775 | } | |
4776 | } | |
4777 | ||
65f38f15 AM |
4778 | /* Copy the extra info we tack onto an elf_link_hash_entry. */ |
4779 | ||
4780 | static void | |
fcfa13d2 AM |
4781 | ppc64_elf_copy_indirect_symbol (struct bfd_link_info *info, |
4782 | struct elf_link_hash_entry *dir, | |
4783 | struct elf_link_hash_entry *ind) | |
65f38f15 AM |
4784 | { |
4785 | struct ppc_link_hash_entry *edir, *eind; | |
4786 | ||
4787 | edir = (struct ppc_link_hash_entry *) dir; | |
4788 | eind = (struct ppc_link_hash_entry *) ind; | |
4789 | ||
c79d6685 AM |
4790 | edir->is_func |= eind->is_func; |
4791 | edir->is_func_descriptor |= eind->is_func_descriptor; | |
4792 | edir->tls_mask |= eind->tls_mask; | |
4793 | if (eind->oh != NULL) | |
4794 | edir->oh = ppc_follow_link (eind->oh); | |
4795 | ||
474436e6 | 4796 | if (edir->elf.versioned != versioned_hidden) |
e81830c5 AM |
4797 | edir->elf.ref_dynamic |= eind->elf.ref_dynamic; |
4798 | edir->elf.ref_regular |= eind->elf.ref_regular; | |
4799 | edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak; | |
4a7e5234 | 4800 | edir->elf.non_got_ref |= eind->elf.non_got_ref; |
e81830c5 AM |
4801 | edir->elf.needs_plt |= eind->elf.needs_plt; |
4802 | edir->elf.pointer_equality_needed |= eind->elf.pointer_equality_needed; | |
c79d6685 | 4803 | |
d311bc8b AM |
4804 | /* If we were called to copy over info for a weak sym, don't copy |
4805 | dyn_relocs, plt/got info, or dynindx. We used to copy dyn_relocs | |
4806 | in order to simplify readonly_dynrelocs and save a field in the | |
4807 | symbol hash entry, but that means dyn_relocs can't be used in any | |
4808 | tests about a specific symbol, or affect other symbol flags which | |
ab2477e1 | 4809 | are then tested. */ |
d311bc8b | 4810 | if (eind->elf.root.type != bfd_link_hash_indirect) |
ab2477e1 | 4811 | return; |
d311bc8b | 4812 | |
411e1bfb | 4813 | /* Copy over any dynamic relocs we may have on the indirect sym. */ |
bbd7ec4a | 4814 | if (eind->dyn_relocs != NULL) |
65f38f15 | 4815 | { |
bbd7ec4a AM |
4816 | if (edir->dyn_relocs != NULL) |
4817 | { | |
6061a67d AM |
4818 | struct elf_dyn_relocs **pp; |
4819 | struct elf_dyn_relocs *p; | |
bbd7ec4a | 4820 | |
fcfa13d2 | 4821 | /* Add reloc counts against the indirect sym to the direct sym |
bbd7ec4a AM |
4822 | list. Merge any entries against the same section. */ |
4823 | for (pp = &eind->dyn_relocs; (p = *pp) != NULL; ) | |
4824 | { | |
6061a67d | 4825 | struct elf_dyn_relocs *q; |
bbd7ec4a AM |
4826 | |
4827 | for (q = edir->dyn_relocs; q != NULL; q = q->next) | |
4828 | if (q->sec == p->sec) | |
4829 | { | |
4830 | q->pc_count += p->pc_count; | |
4831 | q->count += p->count; | |
4832 | *pp = p->next; | |
4833 | break; | |
4834 | } | |
4835 | if (q == NULL) | |
4836 | pp = &p->next; | |
4837 | } | |
4838 | *pp = edir->dyn_relocs; | |
4839 | } | |
4840 | ||
65f38f15 AM |
4841 | edir->dyn_relocs = eind->dyn_relocs; |
4842 | eind->dyn_relocs = NULL; | |
4843 | } | |
65f38f15 | 4844 | |
81848ca0 AM |
4845 | /* Copy over got entries that we may have already seen to the |
4846 | symbol which just became indirect. */ | |
411e1bfb AM |
4847 | if (eind->elf.got.glist != NULL) |
4848 | { | |
4849 | if (edir->elf.got.glist != NULL) | |
4850 | { | |
4851 | struct got_entry **entp; | |
4852 | struct got_entry *ent; | |
4853 | ||
4854 | for (entp = &eind->elf.got.glist; (ent = *entp) != NULL; ) | |
4855 | { | |
4856 | struct got_entry *dent; | |
4857 | ||
4858 | for (dent = edir->elf.got.glist; dent != NULL; dent = dent->next) | |
4859 | if (dent->addend == ent->addend | |
e717da7e | 4860 | && dent->owner == ent->owner |
411e1bfb AM |
4861 | && dent->tls_type == ent->tls_type) |
4862 | { | |
4863 | dent->got.refcount += ent->got.refcount; | |
4864 | *entp = ent->next; | |
4865 | break; | |
4866 | } | |
4867 | if (dent == NULL) | |
4868 | entp = &ent->next; | |
4869 | } | |
4870 | *entp = edir->elf.got.glist; | |
4871 | } | |
4872 | ||
4873 | edir->elf.got.glist = eind->elf.got.glist; | |
4874 | eind->elf.got.glist = NULL; | |
4875 | } | |
4876 | ||
4877 | /* And plt entries. */ | |
40d16e0b | 4878 | move_plt_plist (eind, edir); |
411e1bfb | 4879 | |
fcfa13d2 | 4880 | if (eind->elf.dynindx != -1) |
411e1bfb | 4881 | { |
fcfa13d2 AM |
4882 | if (edir->elf.dynindx != -1) |
4883 | _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr, | |
4884 | edir->elf.dynstr_index); | |
411e1bfb AM |
4885 | edir->elf.dynindx = eind->elf.dynindx; |
4886 | edir->elf.dynstr_index = eind->elf.dynstr_index; | |
4887 | eind->elf.dynindx = -1; | |
4888 | eind->elf.dynstr_index = 0; | |
4889 | } | |
411e1bfb AM |
4890 | } |
4891 | ||
8387904d AM |
4892 | /* Find the function descriptor hash entry from the given function code |
4893 | hash entry FH. Link the entries via their OH fields. */ | |
4894 | ||
4895 | static struct ppc_link_hash_entry * | |
b31867b6 | 4896 | lookup_fdh (struct ppc_link_hash_entry *fh, struct ppc_link_hash_table *htab) |
8387904d AM |
4897 | { |
4898 | struct ppc_link_hash_entry *fdh = fh->oh; | |
4899 | ||
4900 | if (fdh == NULL) | |
4901 | { | |
4902 | const char *fd_name = fh->elf.root.root.string + 1; | |
4903 | ||
4904 | fdh = (struct ppc_link_hash_entry *) | |
4905 | elf_link_hash_lookup (&htab->elf, fd_name, FALSE, FALSE, FALSE); | |
b31867b6 AM |
4906 | if (fdh == NULL) |
4907 | return fdh; | |
4908 | ||
4909 | fdh->is_func_descriptor = 1; | |
4910 | fdh->oh = fh; | |
4911 | fh->is_func = 1; | |
4912 | fh->oh = fdh; | |
8387904d AM |
4913 | } |
4914 | ||
8c5b4e52 AM |
4915 | fdh = ppc_follow_link (fdh); |
4916 | fdh->is_func_descriptor = 1; | |
4917 | fdh->oh = fh; | |
4918 | return fdh; | |
8387904d AM |
4919 | } |
4920 | ||
8c5b4e52 | 4921 | /* Make a fake function descriptor sym for the undefined code sym FH. */ |
bb700d78 AM |
4922 | |
4923 | static struct ppc_link_hash_entry * | |
4924 | make_fdh (struct bfd_link_info *info, | |
908b32fc | 4925 | struct ppc_link_hash_entry *fh) |
bb700d78 | 4926 | { |
8c5b4e52 AM |
4927 | bfd *abfd = fh->elf.root.u.undef.abfd; |
4928 | struct bfd_link_hash_entry *bh = NULL; | |
bb700d78 | 4929 | struct ppc_link_hash_entry *fdh; |
8c5b4e52 AM |
4930 | flagword flags = (fh->elf.root.type == bfd_link_hash_undefweak |
4931 | ? BSF_WEAK | |
4932 | : BSF_GLOBAL); | |
4933 | ||
4934 | if (!_bfd_generic_link_add_one_symbol (info, abfd, | |
4935 | fh->elf.root.root.string + 1, | |
4936 | flags, bfd_und_section_ptr, 0, | |
4937 | NULL, FALSE, FALSE, &bh)) | |
bb700d78 AM |
4938 | return NULL; |
4939 | ||
4940 | fdh = (struct ppc_link_hash_entry *) bh; | |
4941 | fdh->elf.non_elf = 0; | |
908b32fc AM |
4942 | fdh->fake = 1; |
4943 | fdh->is_func_descriptor = 1; | |
4944 | fdh->oh = fh; | |
4945 | fh->is_func = 1; | |
4946 | fh->oh = fdh; | |
bb700d78 AM |
4947 | return fdh; |
4948 | } | |
4949 | ||
8387904d AM |
4950 | /* Fix function descriptor symbols defined in .opd sections to be |
4951 | function type. */ | |
555cd476 AM |
4952 | |
4953 | static bfd_boolean | |
c16153ae | 4954 | ppc64_elf_add_symbol_hook (bfd *ibfd, |
e054468f | 4955 | struct bfd_link_info *info, |
555cd476 | 4956 | Elf_Internal_Sym *isym, |
6911b7dc | 4957 | const char **name, |
555cd476 AM |
4958 | flagword *flags ATTRIBUTE_UNUSED, |
4959 | asection **sec, | |
b53dfeb2 | 4960 | bfd_vma *value) |
555cd476 | 4961 | { |
a43942db | 4962 | if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC |
f1885d1e AM |
4963 | && (ibfd->flags & DYNAMIC) == 0 |
4964 | && bfd_get_flavour (info->output_bfd) == bfd_target_elf_flavour) | |
a43942db | 4965 | elf_tdata (info->output_bfd)->has_gnu_symbols |= elf_gnu_symbol_ifunc; |
f64b2e8d | 4966 | |
b53dfeb2 | 4967 | if (*sec != NULL |
f1885d1e | 4968 | && strcmp ((*sec)->name, ".opd") == 0) |
b53dfeb2 AM |
4969 | { |
4970 | asection *code_sec; | |
4971 | ||
4972 | if (!(ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC | |
4973 | || ELF_ST_TYPE (isym->st_info) == STT_FUNC)) | |
4974 | isym->st_info = ELF_ST_INFO (ELF_ST_BIND (isym->st_info), STT_FUNC); | |
4975 | ||
4976 | /* If the symbol is a function defined in .opd, and the function | |
4977 | code is in a discarded group, let it appear to be undefined. */ | |
0e1862bb | 4978 | if (!bfd_link_relocatable (info) |
b53dfeb2 AM |
4979 | && (*sec)->reloc_count != 0 |
4980 | && opd_entry_value (*sec, *value, &code_sec, NULL, | |
4981 | FALSE) != (bfd_vma) -1 | |
4982 | && discarded_section (code_sec)) | |
4983 | { | |
4984 | *sec = bfd_und_section_ptr; | |
4985 | isym->st_shndx = SHN_UNDEF; | |
4986 | } | |
4987 | } | |
dbd1e97e AM |
4988 | else if (*sec != NULL |
4989 | && strcmp ((*sec)->name, ".toc") == 0 | |
4990 | && ELF_ST_TYPE (isym->st_info) == STT_OBJECT) | |
4991 | { | |
4992 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
4993 | if (htab != NULL) | |
4994 | htab->params->object_in_toc = 1; | |
4995 | } | |
433817dd | 4996 | |
6911b7dc AM |
4997 | if ((STO_PPC64_LOCAL_MASK & isym->st_other) != 0) |
4998 | { | |
4999 | if (abiversion (ibfd) == 0) | |
5000 | set_abiversion (ibfd, 2); | |
5001 | else if (abiversion (ibfd) == 1) | |
5002 | { | |
cf97bcb0 AM |
5003 | _bfd_error_handler (_("symbol '%s' has invalid st_other" |
5004 | " for ABI version 1"), *name); | |
6911b7dc AM |
5005 | bfd_set_error (bfd_error_bad_value); |
5006 | return FALSE; | |
5007 | } | |
5008 | } | |
5009 | ||
555cd476 AM |
5010 | return TRUE; |
5011 | } | |
5012 | ||
6911b7dc AM |
5013 | /* Merge non-visibility st_other attributes: local entry point. */ |
5014 | ||
5015 | static void | |
5016 | ppc64_elf_merge_symbol_attribute (struct elf_link_hash_entry *h, | |
5017 | const Elf_Internal_Sym *isym, | |
5018 | bfd_boolean definition, | |
5019 | bfd_boolean dynamic) | |
5020 | { | |
f378ab09 | 5021 | if (definition && (!dynamic || !h->def_regular)) |
6911b7dc AM |
5022 | h->other = ((isym->st_other & ~ELF_ST_VISIBILITY (-1)) |
5023 | | ELF_ST_VISIBILITY (h->other)); | |
5024 | } | |
5025 | ||
8c5b4e52 AM |
5026 | /* Hook called on merging a symbol. We use this to clear "fake" since |
5027 | we now have a real symbol. */ | |
5028 | ||
5029 | static bfd_boolean | |
5030 | ppc64_elf_merge_symbol (struct elf_link_hash_entry *h, | |
8b5f1ed8 | 5031 | const Elf_Internal_Sym *isym, |
8c5b4e52 AM |
5032 | asection **psec ATTRIBUTE_UNUSED, |
5033 | bfd_boolean newdef ATTRIBUTE_UNUSED, | |
5034 | bfd_boolean olddef ATTRIBUTE_UNUSED, | |
5035 | bfd *oldbfd ATTRIBUTE_UNUSED, | |
5036 | const asection *oldsec ATTRIBUTE_UNUSED) | |
5037 | { | |
5038 | ((struct ppc_link_hash_entry *) h)->fake = 0; | |
8b5f1ed8 AM |
5039 | if ((STO_PPC64_LOCAL_MASK & isym->st_other) != 0) |
5040 | ((struct ppc_link_hash_entry *) h)->non_zero_localentry = 1; | |
8c5b4e52 AM |
5041 | return TRUE; |
5042 | } | |
5043 | ||
8387904d | 5044 | /* This function makes an old ABI object reference to ".bar" cause the |
908b32fc AM |
5045 | inclusion of a new ABI object archive that defines "bar". |
5046 | NAME is a symbol defined in an archive. Return a symbol in the hash | |
5047 | table that might be satisfied by the archive symbols. */ | |
8387904d AM |
5048 | |
5049 | static struct elf_link_hash_entry * | |
5050 | ppc64_elf_archive_symbol_lookup (bfd *abfd, | |
5051 | struct bfd_link_info *info, | |
5052 | const char *name) | |
5053 | { | |
5054 | struct elf_link_hash_entry *h; | |
5055 | char *dot_name; | |
5056 | size_t len; | |
5057 | ||
5058 | h = _bfd_elf_archive_symbol_lookup (abfd, info, name); | |
908b32fc AM |
5059 | if (h != NULL |
5060 | /* Don't return this sym if it is a fake function descriptor | |
5061 | created by add_symbol_adjust. */ | |
8c5b4e52 | 5062 | && !((struct ppc_link_hash_entry *) h)->fake) |
8387904d AM |
5063 | return h; |
5064 | ||
5065 | if (name[0] == '.') | |
5066 | return h; | |
5067 | ||
5068 | len = strlen (name); | |
5069 | dot_name = bfd_alloc (abfd, len + 2); | |
5070 | if (dot_name == NULL) | |
e99955cd | 5071 | return (struct elf_link_hash_entry *) -1; |
8387904d AM |
5072 | dot_name[0] = '.'; |
5073 | memcpy (dot_name + 1, name, len + 1); | |
5074 | h = _bfd_elf_archive_symbol_lookup (abfd, info, dot_name); | |
5075 | bfd_release (abfd, dot_name); | |
5076 | return h; | |
5077 | } | |
5078 | ||
5079 | /* This function satisfies all old ABI object references to ".bar" if a | |
99877b66 AM |
5080 | new ABI object defines "bar". Well, at least, undefined dot symbols |
5081 | are made weak. This stops later archive searches from including an | |
5082 | object if we already have a function descriptor definition. It also | |
35b0ce59 AM |
5083 | prevents the linker complaining about undefined symbols. |
5084 | We also check and correct mismatched symbol visibility here. The | |
5085 | most restrictive visibility of the function descriptor and the | |
5086 | function entry symbol is used. */ | |
8387904d AM |
5087 | |
5088 | static bfd_boolean | |
b3fac117 | 5089 | add_symbol_adjust (struct ppc_link_hash_entry *eh, struct bfd_link_info *info) |
8387904d | 5090 | { |
8387904d AM |
5091 | struct ppc_link_hash_table *htab; |
5092 | struct ppc_link_hash_entry *fdh; | |
5093 | ||
b3fac117 AM |
5094 | if (eh->elf.root.type == bfd_link_hash_warning) |
5095 | eh = (struct ppc_link_hash_entry *) eh->elf.root.u.i.link; | |
8387904d | 5096 | |
8400d40d AM |
5097 | if (eh->elf.root.type == bfd_link_hash_indirect) |
5098 | return TRUE; | |
5099 | ||
b3fac117 AM |
5100 | if (eh->elf.root.root.string[0] != '.') |
5101 | abort (); | |
8387904d | 5102 | |
b3fac117 | 5103 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
5104 | if (htab == NULL) |
5105 | return FALSE; | |
5106 | ||
b31867b6 | 5107 | fdh = lookup_fdh (eh, htab); |
8c5b4e52 AM |
5108 | if (fdh == NULL |
5109 | && !bfd_link_relocatable (info) | |
5110 | && (eh->elf.root.type == bfd_link_hash_undefined | |
5111 | || eh->elf.root.type == bfd_link_hash_undefweak) | |
5112 | && eh->elf.ref_regular) | |
5113 | { | |
5114 | /* Make an undefined function descriptor sym, in order to | |
5115 | pull in an --as-needed shared lib. Archives are handled | |
5116 | elsewhere. */ | |
5117 | fdh = make_fdh (info, eh); | |
5118 | if (fdh == NULL) | |
5119 | return FALSE; | |
bb700d78 | 5120 | } |
8c5b4e52 AM |
5121 | |
5122 | if (fdh != NULL) | |
8387904d | 5123 | { |
35b0ce59 AM |
5124 | unsigned entry_vis = ELF_ST_VISIBILITY (eh->elf.other) - 1; |
5125 | unsigned descr_vis = ELF_ST_VISIBILITY (fdh->elf.other) - 1; | |
8c5b4e52 AM |
5126 | |
5127 | /* Make both descriptor and entry symbol have the most | |
5128 | constraining visibility of either symbol. */ | |
35b0ce59 AM |
5129 | if (entry_vis < descr_vis) |
5130 | fdh->elf.other += entry_vis - descr_vis; | |
5131 | else if (entry_vis > descr_vis) | |
5132 | eh->elf.other += descr_vis - entry_vis; | |
5133 | ||
8c5b4e52 AM |
5134 | /* Propagate reference flags from entry symbol to function |
5135 | descriptor symbol. */ | |
bc4e12de | 5136 | fdh->elf.root.non_ir_ref_regular |= eh->elf.root.non_ir_ref_regular; |
4070765b | 5137 | fdh->elf.root.non_ir_ref_dynamic |= eh->elf.root.non_ir_ref_dynamic; |
8c5b4e52 AM |
5138 | fdh->elf.ref_regular |= eh->elf.ref_regular; |
5139 | fdh->elf.ref_regular_nonweak |= eh->elf.ref_regular_nonweak; | |
5140 | ||
5141 | if (!fdh->elf.forced_local | |
5142 | && fdh->elf.dynindx == -1 | |
5143 | && fdh->elf.versioned != versioned_hidden | |
5144 | && (bfd_link_dll (info) | |
5145 | || fdh->elf.def_dynamic | |
5146 | || fdh->elf.ref_dynamic) | |
5147 | && (eh->elf.ref_regular | |
5148 | || eh->elf.def_regular)) | |
5149 | { | |
5150 | if (! bfd_elf_link_record_dynamic_symbol (info, &fdh->elf)) | |
5151 | return FALSE; | |
35b0ce59 | 5152 | } |
8387904d | 5153 | } |
99877b66 | 5154 | |
8387904d AM |
5155 | return TRUE; |
5156 | } | |
5157 | ||
f6c7c3e8 AM |
5158 | /* Set up opd section info and abiversion for IBFD, and process list |
5159 | of dot-symbols we made in link_hash_newfunc. */ | |
b3fac117 | 5160 | |
8387904d | 5161 | static bfd_boolean |
f6c7c3e8 | 5162 | ppc64_elf_before_check_relocs (bfd *ibfd, struct bfd_link_info *info) |
8387904d | 5163 | { |
99877b66 | 5164 | struct ppc_link_hash_table *htab; |
b3fac117 | 5165 | struct ppc_link_hash_entry **p, *eh; |
459609d6 | 5166 | asection *opd = bfd_get_section_by_name (ibfd, ".opd"); |
433817dd | 5167 | |
459609d6 | 5168 | if (opd != NULL && opd->size != 0) |
b3fac117 | 5169 | { |
b9399fcf AM |
5170 | BFD_ASSERT (ppc64_elf_section_data (opd)->sec_type == sec_normal); |
5171 | ppc64_elf_section_data (opd)->sec_type = sec_opd; | |
5172 | ||
459609d6 AM |
5173 | if (abiversion (ibfd) == 0) |
5174 | set_abiversion (ibfd, 1); | |
8a2058b5 | 5175 | else if (abiversion (ibfd) >= 2) |
f6c7c3e8 | 5176 | { |
695344c0 | 5177 | /* xgettext:c-format */ |
cf97bcb0 AM |
5178 | _bfd_error_handler (_("%pB .opd not allowed in ABI version %d"), |
5179 | ibfd, abiversion (ibfd)); | |
459609d6 AM |
5180 | bfd_set_error (bfd_error_bad_value); |
5181 | return FALSE; | |
f6c7c3e8 | 5182 | } |
b9399fcf | 5183 | } |
f6c7c3e8 | 5184 | |
b9399fcf AM |
5185 | if (is_ppc64_elf (info->output_bfd)) |
5186 | { | |
5187 | /* For input files without an explicit abiversion in e_flags | |
5188 | we should have flagged any with symbol st_other bits set | |
5189 | as ELFv1 and above flagged those with .opd as ELFv2. | |
5190 | Set the output abiversion if not yet set, and for any input | |
5191 | still ambiguous, take its abiversion from the output. | |
5192 | Differences in ABI are reported later. */ | |
5193 | if (abiversion (info->output_bfd) == 0) | |
5194 | set_abiversion (info->output_bfd, abiversion (ibfd)); | |
5195 | else if (abiversion (ibfd) == 0) | |
5196 | set_abiversion (ibfd, abiversion (info->output_bfd)); | |
b3fac117 AM |
5197 | } |
5198 | ||
459609d6 AM |
5199 | htab = ppc_hash_table (info); |
5200 | if (htab == NULL) | |
b9399fcf | 5201 | return TRUE; |
459609d6 | 5202 | |
b9399fcf AM |
5203 | if (opd != NULL && opd->size != 0 |
5204 | && (ibfd->flags & DYNAMIC) == 0 | |
5205 | && (opd->flags & SEC_RELOC) != 0 | |
5206 | && opd->reloc_count != 0 | |
5207 | && !bfd_is_abs_section (opd->output_section) | |
5208 | && info->gc_sections) | |
5209 | { | |
5210 | /* Garbage collection needs some extra help with .opd sections. | |
5211 | We don't want to necessarily keep everything referenced by | |
5212 | relocs in .opd, as that would keep all functions. Instead, | |
5213 | if we reference an .opd symbol (a function descriptor), we | |
5214 | want to keep the function code symbol's section. This is | |
5215 | easy for global symbols, but for local syms we need to keep | |
5216 | information about the associated function section. */ | |
5217 | bfd_size_type amt; | |
5218 | asection **opd_sym_map; | |
5219 | Elf_Internal_Shdr *symtab_hdr; | |
5220 | Elf_Internal_Rela *relocs, *rel_end, *rel; | |
5221 | ||
5222 | amt = OPD_NDX (opd->size) * sizeof (*opd_sym_map); | |
5223 | opd_sym_map = bfd_zalloc (ibfd, amt); | |
5224 | if (opd_sym_map == NULL) | |
5225 | return FALSE; | |
5226 | ppc64_elf_section_data (opd)->u.opd.func_sec = opd_sym_map; | |
5227 | relocs = _bfd_elf_link_read_relocs (ibfd, opd, NULL, NULL, | |
5228 | info->keep_memory); | |
5229 | if (relocs == NULL) | |
5230 | return FALSE; | |
5231 | symtab_hdr = &elf_symtab_hdr (ibfd); | |
5232 | rel_end = relocs + opd->reloc_count - 1; | |
5233 | for (rel = relocs; rel < rel_end; rel++) | |
5234 | { | |
5235 | enum elf_ppc64_reloc_type r_type = ELF64_R_TYPE (rel->r_info); | |
5236 | unsigned long r_symndx = ELF64_R_SYM (rel->r_info); | |
5237 | ||
5238 | if (r_type == R_PPC64_ADDR64 | |
5239 | && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC | |
5240 | && r_symndx < symtab_hdr->sh_info) | |
5241 | { | |
5242 | Elf_Internal_Sym *isym; | |
5243 | asection *s; | |
5244 | ||
5245 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, ibfd, r_symndx); | |
5246 | if (isym == NULL) | |
5247 | { | |
5248 | if (elf_section_data (opd)->relocs != relocs) | |
5249 | free (relocs); | |
5250 | return FALSE; | |
5251 | } | |
5252 | ||
5253 | s = bfd_section_from_elf_index (ibfd, isym->st_shndx); | |
5254 | if (s != NULL && s != opd) | |
5255 | opd_sym_map[OPD_NDX (rel->r_offset)] = s; | |
5256 | } | |
5257 | } | |
5258 | if (elf_section_data (opd)->relocs != relocs) | |
5259 | free (relocs); | |
5260 | } | |
459609d6 AM |
5261 | |
5262 | p = &htab->dot_syms; | |
5263 | while ((eh = *p) != NULL) | |
5264 | { | |
5265 | *p = NULL; | |
5266 | if (&eh->elf == htab->elf.hgot) | |
5267 | ; | |
5268 | else if (htab->elf.hgot == NULL | |
5269 | && strcmp (eh->elf.root.root.string, ".TOC.") == 0) | |
5270 | htab->elf.hgot = &eh->elf; | |
8c5b4e52 AM |
5271 | else if (abiversion (ibfd) <= 1) |
5272 | { | |
5273 | htab->need_func_desc_adj = 1; | |
5274 | if (!add_symbol_adjust (eh, info)) | |
5275 | return FALSE; | |
5276 | } | |
459609d6 AM |
5277 | p = &eh->u.next_dot_sym; |
5278 | } | |
b3fac117 | 5279 | return TRUE; |
8387904d AM |
5280 | } |
5281 | ||
97fed1c9 JJ |
5282 | /* Undo hash table changes when an --as-needed input file is determined |
5283 | not to be needed. */ | |
5284 | ||
5285 | static bfd_boolean | |
e5034e59 AM |
5286 | ppc64_elf_notice_as_needed (bfd *ibfd, |
5287 | struct bfd_link_info *info, | |
5288 | enum notice_asneeded_action act) | |
97fed1c9 | 5289 | { |
e5034e59 AM |
5290 | if (act == notice_not_needed) |
5291 | { | |
5292 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
4dfe6ac6 | 5293 | |
e5034e59 AM |
5294 | if (htab == NULL) |
5295 | return FALSE; | |
4dfe6ac6 | 5296 | |
e5034e59 AM |
5297 | htab->dot_syms = NULL; |
5298 | } | |
5299 | return _bfd_elf_notice_as_needed (ibfd, info, act); | |
97fed1c9 JJ |
5300 | } |
5301 | ||
aa374f67 AM |
5302 | /* If --just-symbols against a final linked binary, then assume we need |
5303 | toc adjusting stubs when calling functions defined there. */ | |
5304 | ||
5305 | static void | |
5306 | ppc64_elf_link_just_syms (asection *sec, struct bfd_link_info *info) | |
5307 | { | |
5308 | if ((sec->flags & SEC_CODE) != 0 | |
5309 | && (sec->owner->flags & (EXEC_P | DYNAMIC)) != 0 | |
5310 | && is_ppc64_elf (sec->owner)) | |
5311 | { | |
2c3f079f AM |
5312 | if (abiversion (sec->owner) >= 2 |
5313 | || bfd_get_section_by_name (sec->owner, ".opd") != NULL) | |
aa374f67 AM |
5314 | sec->has_toc_reloc = 1; |
5315 | } | |
5316 | _bfd_elf_link_just_syms (sec, info); | |
5317 | } | |
5318 | ||
e054468f | 5319 | static struct plt_entry ** |
4ce794b7 AM |
5320 | update_local_sym_info (bfd *abfd, Elf_Internal_Shdr *symtab_hdr, |
5321 | unsigned long r_symndx, bfd_vma r_addend, int tls_type) | |
411e1bfb AM |
5322 | { |
5323 | struct got_entry **local_got_ents = elf_local_got_ents (abfd); | |
e054468f | 5324 | struct plt_entry **local_plt; |
f961d9dd | 5325 | unsigned char *local_got_tls_masks; |
411e1bfb AM |
5326 | |
5327 | if (local_got_ents == NULL) | |
5328 | { | |
5329 | bfd_size_type size = symtab_hdr->sh_info; | |
5330 | ||
e054468f AM |
5331 | size *= (sizeof (*local_got_ents) |
5332 | + sizeof (*local_plt) | |
5333 | + sizeof (*local_got_tls_masks)); | |
4ce794b7 | 5334 | local_got_ents = bfd_zalloc (abfd, size); |
411e1bfb | 5335 | if (local_got_ents == NULL) |
e054468f | 5336 | return NULL; |
411e1bfb AM |
5337 | elf_local_got_ents (abfd) = local_got_ents; |
5338 | } | |
5339 | ||
e054468f | 5340 | if ((tls_type & (PLT_IFUNC | TLS_EXPLICIT)) == 0) |
411e1bfb AM |
5341 | { |
5342 | struct got_entry *ent; | |
5343 | ||
5344 | for (ent = local_got_ents[r_symndx]; ent != NULL; ent = ent->next) | |
e717da7e AM |
5345 | if (ent->addend == r_addend |
5346 | && ent->owner == abfd | |
5347 | && ent->tls_type == tls_type) | |
411e1bfb AM |
5348 | break; |
5349 | if (ent == NULL) | |
5350 | { | |
5351 | bfd_size_type amt = sizeof (*ent); | |
4ce794b7 | 5352 | ent = bfd_alloc (abfd, amt); |
411e1bfb AM |
5353 | if (ent == NULL) |
5354 | return FALSE; | |
5355 | ent->next = local_got_ents[r_symndx]; | |
5356 | ent->addend = r_addend; | |
e717da7e | 5357 | ent->owner = abfd; |
411e1bfb | 5358 | ent->tls_type = tls_type; |
927be08e | 5359 | ent->is_indirect = FALSE; |
411e1bfb AM |
5360 | ent->got.refcount = 0; |
5361 | local_got_ents[r_symndx] = ent; | |
5362 | } | |
5363 | ent->got.refcount += 1; | |
5364 | } | |
5365 | ||
e054468f | 5366 | local_plt = (struct plt_entry **) (local_got_ents + symtab_hdr->sh_info); |
f961d9dd | 5367 | local_got_tls_masks = (unsigned char *) (local_plt + symtab_hdr->sh_info); |
e7b938ca | 5368 | local_got_tls_masks[r_symndx] |= tls_type; |
e054468f AM |
5369 | |
5370 | return local_plt + r_symndx; | |
65f38f15 AM |
5371 | } |
5372 | ||
411e1bfb | 5373 | static bfd_boolean |
e054468f | 5374 | update_plt_info (bfd *abfd, struct plt_entry **plist, bfd_vma addend) |
1e2f5b6e | 5375 | { |
411e1bfb | 5376 | struct plt_entry *ent; |
1e2f5b6e | 5377 | |
e054468f | 5378 | for (ent = *plist; ent != NULL; ent = ent->next) |
411e1bfb AM |
5379 | if (ent->addend == addend) |
5380 | break; | |
5381 | if (ent == NULL) | |
1e2f5b6e | 5382 | { |
411e1bfb | 5383 | bfd_size_type amt = sizeof (*ent); |
4ce794b7 | 5384 | ent = bfd_alloc (abfd, amt); |
411e1bfb AM |
5385 | if (ent == NULL) |
5386 | return FALSE; | |
e054468f | 5387 | ent->next = *plist; |
411e1bfb AM |
5388 | ent->addend = addend; |
5389 | ent->plt.refcount = 0; | |
e054468f | 5390 | *plist = ent; |
1e2f5b6e | 5391 | } |
411e1bfb | 5392 | ent->plt.refcount += 1; |
b34976b6 | 5393 | return TRUE; |
1e2f5b6e AM |
5394 | } |
5395 | ||
e054468f AM |
5396 | static bfd_boolean |
5397 | is_branch_reloc (enum elf_ppc64_reloc_type r_type) | |
5398 | { | |
5399 | return (r_type == R_PPC64_REL24 | |
5400 | || r_type == R_PPC64_REL14 | |
5401 | || r_type == R_PPC64_REL14_BRTAKEN | |
5402 | || r_type == R_PPC64_REL14_BRNTAKEN | |
5403 | || r_type == R_PPC64_ADDR24 | |
5404 | || r_type == R_PPC64_ADDR14 | |
5405 | || r_type == R_PPC64_ADDR14_BRTAKEN | |
5406 | || r_type == R_PPC64_ADDR14_BRNTAKEN); | |
5407 | } | |
5408 | ||
5bd4f169 | 5409 | /* Look through the relocs for a section during the first phase, and |
65f38f15 | 5410 | calculate needed space in the global offset table, procedure |
5d1634d7 | 5411 | linkage table, and dynamic reloc sections. */ |
5bd4f169 | 5412 | |
b34976b6 | 5413 | static bfd_boolean |
4ce794b7 AM |
5414 | ppc64_elf_check_relocs (bfd *abfd, struct bfd_link_info *info, |
5415 | asection *sec, const Elf_Internal_Rela *relocs) | |
5bd4f169 | 5416 | { |
65f38f15 | 5417 | struct ppc_link_hash_table *htab; |
5bd4f169 | 5418 | Elf_Internal_Shdr *symtab_hdr; |
c7e2358a | 5419 | struct elf_link_hash_entry **sym_hashes; |
5bd4f169 AM |
5420 | const Elf_Internal_Rela *rel; |
5421 | const Elf_Internal_Rela *rel_end; | |
5bd4f169 | 5422 | asection *sreloc; |
3a71aa26 | 5423 | struct elf_link_hash_entry *tga, *dottga; |
b9399fcf | 5424 | bfd_boolean is_opd; |
5bd4f169 | 5425 | |
0e1862bb | 5426 | if (bfd_link_relocatable (info)) |
b34976b6 | 5427 | return TRUE; |
5bd4f169 | 5428 | |
680a3378 AM |
5429 | /* Don't do anything special with non-loaded, non-alloced sections. |
5430 | In particular, any relocs in such sections should not affect GOT | |
5431 | and PLT reference counting (ie. we don't allow them to create GOT | |
5432 | or PLT entries), there's no possibility or desire to optimize TLS | |
5433 | relocs, and there's not much point in propagating relocs to shared | |
5434 | libs that the dynamic linker won't relocate. */ | |
5435 | if ((sec->flags & SEC_ALLOC) == 0) | |
5436 | return TRUE; | |
5437 | ||
0c8d6e5c | 5438 | BFD_ASSERT (is_ppc64_elf (abfd)); |
0ffa91dd | 5439 | |
65f38f15 | 5440 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
5441 | if (htab == NULL) |
5442 | return FALSE; | |
5443 | ||
3a71aa26 AM |
5444 | tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr", |
5445 | FALSE, FALSE, TRUE); | |
5446 | dottga = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr", | |
5447 | FALSE, FALSE, TRUE); | |
0ffa91dd | 5448 | symtab_hdr = &elf_symtab_hdr (abfd); |
5bd4f169 | 5449 | sym_hashes = elf_sym_hashes (abfd); |
5bd4f169 | 5450 | sreloc = NULL; |
b9399fcf | 5451 | is_opd = ppc64_elf_section_data (sec)->sec_type == sec_opd; |
5bd4f169 AM |
5452 | rel_end = relocs + sec->reloc_count; |
5453 | for (rel = relocs; rel < rel_end; rel++) | |
5454 | { | |
5455 | unsigned long r_symndx; | |
5456 | struct elf_link_hash_entry *h; | |
04c9666a | 5457 | enum elf_ppc64_reloc_type r_type; |
727fc41e | 5458 | int tls_type; |
7c8fe5c4 | 5459 | struct _ppc64_elf_section_data *ppc64_sec; |
cbf95972 | 5460 | struct plt_entry **ifunc, **plt_list; |
5bd4f169 AM |
5461 | |
5462 | r_symndx = ELF64_R_SYM (rel->r_info); | |
5463 | if (r_symndx < symtab_hdr->sh_info) | |
5464 | h = NULL; | |
5465 | else | |
973a3492 L |
5466 | { |
5467 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
b31867b6 | 5468 | h = elf_follow_link (h); |
1c865ab2 AM |
5469 | |
5470 | if (h == htab->elf.hgot) | |
5471 | sec->has_toc_reloc = 1; | |
973a3492 | 5472 | } |
5bd4f169 | 5473 | |
727fc41e | 5474 | tls_type = 0; |
e054468f | 5475 | ifunc = NULL; |
25f23106 AM |
5476 | if (h != NULL) |
5477 | { | |
5478 | if (h->type == STT_GNU_IFUNC) | |
5479 | { | |
5480 | h->needs_plt = 1; | |
5481 | ifunc = &h->plt.plist; | |
5482 | } | |
5483 | } | |
5484 | else | |
5485 | { | |
5486 | Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache, | |
5487 | abfd, r_symndx); | |
5488 | if (isym == NULL) | |
5489 | return FALSE; | |
5490 | ||
5491 | if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC) | |
5492 | { | |
5493 | ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
5494 | rel->r_addend, PLT_IFUNC); | |
5495 | if (ifunc == NULL) | |
5496 | return FALSE; | |
5497 | } | |
5498 | } | |
727fc41e | 5499 | |
cbf95972 | 5500 | r_type = ELF64_R_TYPE (rel->r_info); |
a33d1f77 | 5501 | switch (r_type) |
5bd4f169 | 5502 | { |
727fc41e AM |
5503 | case R_PPC64_TLSGD: |
5504 | case R_PPC64_TLSLD: | |
5505 | /* These special tls relocs tie a call to __tls_get_addr with | |
5506 | its parameter symbol. */ | |
5507 | break; | |
5508 | ||
411e1bfb AM |
5509 | case R_PPC64_GOT_TLSLD16: |
5510 | case R_PPC64_GOT_TLSLD16_LO: | |
5511 | case R_PPC64_GOT_TLSLD16_HI: | |
5512 | case R_PPC64_GOT_TLSLD16_HA: | |
951fd09b | 5513 | tls_type = TLS_TLS | TLS_LD; |
411e1bfb AM |
5514 | goto dogottls; |
5515 | ||
5516 | case R_PPC64_GOT_TLSGD16: | |
5517 | case R_PPC64_GOT_TLSGD16_LO: | |
5518 | case R_PPC64_GOT_TLSGD16_HI: | |
5519 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b | 5520 | tls_type = TLS_TLS | TLS_GD; |
411e1bfb AM |
5521 | goto dogottls; |
5522 | ||
5523 | case R_PPC64_GOT_TPREL16_DS: | |
5524 | case R_PPC64_GOT_TPREL16_LO_DS: | |
5525 | case R_PPC64_GOT_TPREL16_HI: | |
5526 | case R_PPC64_GOT_TPREL16_HA: | |
7c8bbca5 | 5527 | if (bfd_link_dll (info)) |
411e1bfb AM |
5528 | info->flags |= DF_STATIC_TLS; |
5529 | tls_type = TLS_TLS | TLS_TPREL; | |
5530 | goto dogottls; | |
5531 | ||
5532 | case R_PPC64_GOT_DTPREL16_DS: | |
5533 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
5534 | case R_PPC64_GOT_DTPREL16_HI: | |
5535 | case R_PPC64_GOT_DTPREL16_HA: | |
5536 | tls_type = TLS_TLS | TLS_DTPREL; | |
5537 | dogottls: | |
5538 | sec->has_tls_reloc = 1; | |
1a0670f3 | 5539 | /* Fall through */ |
411e1bfb | 5540 | |
5bd4f169 | 5541 | case R_PPC64_GOT16: |
5bd4f169 | 5542 | case R_PPC64_GOT16_DS: |
65f38f15 AM |
5543 | case R_PPC64_GOT16_HA: |
5544 | case R_PPC64_GOT16_HI: | |
5545 | case R_PPC64_GOT16_LO: | |
5bd4f169 | 5546 | case R_PPC64_GOT16_LO_DS: |
65f38f15 | 5547 | /* This symbol requires a global offset table entry. */ |
4c52953f | 5548 | sec->has_toc_reloc = 1; |
33c0ec9d AM |
5549 | if (r_type == R_PPC64_GOT_TLSLD16 |
5550 | || r_type == R_PPC64_GOT_TLSGD16 | |
5551 | || r_type == R_PPC64_GOT_TPREL16_DS | |
5552 | || r_type == R_PPC64_GOT_DTPREL16_DS | |
5553 | || r_type == R_PPC64_GOT16 | |
5554 | || r_type == R_PPC64_GOT16_DS) | |
5555 | { | |
5556 | htab->do_multi_toc = 1; | |
d77c8a4b | 5557 | ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1; |
33c0ec9d AM |
5558 | } |
5559 | ||
e717da7e AM |
5560 | if (ppc64_elf_tdata (abfd)->got == NULL |
5561 | && !create_got_section (abfd, info)) | |
b34976b6 | 5562 | return FALSE; |
5bd4f169 AM |
5563 | |
5564 | if (h != NULL) | |
5565 | { | |
411e1bfb AM |
5566 | struct ppc_link_hash_entry *eh; |
5567 | struct got_entry *ent; | |
65f38f15 | 5568 | |
411e1bfb AM |
5569 | eh = (struct ppc_link_hash_entry *) h; |
5570 | for (ent = eh->elf.got.glist; ent != NULL; ent = ent->next) | |
5571 | if (ent->addend == rel->r_addend | |
e717da7e | 5572 | && ent->owner == abfd |
411e1bfb AM |
5573 | && ent->tls_type == tls_type) |
5574 | break; | |
5575 | if (ent == NULL) | |
5bd4f169 | 5576 | { |
411e1bfb | 5577 | bfd_size_type amt = sizeof (*ent); |
4ce794b7 | 5578 | ent = bfd_alloc (abfd, amt); |
411e1bfb | 5579 | if (ent == NULL) |
b34976b6 | 5580 | return FALSE; |
411e1bfb AM |
5581 | ent->next = eh->elf.got.glist; |
5582 | ent->addend = rel->r_addend; | |
e717da7e | 5583 | ent->owner = abfd; |
411e1bfb | 5584 | ent->tls_type = tls_type; |
927be08e | 5585 | ent->is_indirect = FALSE; |
411e1bfb AM |
5586 | ent->got.refcount = 0; |
5587 | eh->elf.got.glist = ent; | |
5bd4f169 | 5588 | } |
411e1bfb | 5589 | ent->got.refcount += 1; |
e7b938ca | 5590 | eh->tls_mask |= tls_type; |
5bd4f169 | 5591 | } |
411e1bfb AM |
5592 | else |
5593 | /* This is a global offset table entry for a local symbol. */ | |
5594 | if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
5595 | rel->r_addend, tls_type)) | |
5596 | return FALSE; | |
a345bc8d AM |
5597 | |
5598 | /* We may also need a plt entry if the symbol turns out to be | |
5599 | an ifunc. */ | |
0e1862bb | 5600 | if (h != NULL && !bfd_link_pic (info) && abiversion (abfd) != 1) |
a345bc8d AM |
5601 | { |
5602 | if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend)) | |
5603 | return FALSE; | |
5604 | } | |
5bd4f169 AM |
5605 | break; |
5606 | ||
5bd4f169 | 5607 | case R_PPC64_PLT16_HA: |
65f38f15 AM |
5608 | case R_PPC64_PLT16_HI: |
5609 | case R_PPC64_PLT16_LO: | |
5610 | case R_PPC64_PLT32: | |
5611 | case R_PPC64_PLT64: | |
cbf95972 AM |
5612 | /* This symbol requires a procedure linkage table entry. */ |
5613 | plt_list = ifunc; | |
5614 | if (h != NULL) | |
e054468f | 5615 | { |
e054468f AM |
5616 | h->needs_plt = 1; |
5617 | if (h->root.root.string[0] == '.' | |
5618 | && h->root.root.string[1] != '\0') | |
5619 | ((struct ppc_link_hash_entry *) h)->is_func = 1; | |
cbf95972 AM |
5620 | plt_list = &h->plt.plist; |
5621 | } | |
5622 | if (plt_list == NULL) | |
5623 | { | |
5624 | /* It does not make sense to have a procedure linkage | |
5625 | table entry for a non-ifunc local symbol. */ | |
5626 | info->callbacks->einfo | |
695344c0 | 5627 | /* xgettext:c-format */ |
174d0a74 | 5628 | (_("%H: %s reloc against local symbol\n"), |
cbf95972 AM |
5629 | abfd, sec, rel->r_offset, |
5630 | ppc64_elf_howto_table[r_type]->name); | |
5631 | bfd_set_error (bfd_error_bad_value); | |
5632 | return FALSE; | |
e054468f | 5633 | } |
cbf95972 AM |
5634 | if (!update_plt_info (abfd, plt_list, rel->r_addend)) |
5635 | return FALSE; | |
5bd4f169 AM |
5636 | break; |
5637 | ||
5638 | /* The following relocations don't need to propagate the | |
5639 | relocation if linking a shared object since they are | |
5640 | section relative. */ | |
5641 | case R_PPC64_SECTOFF: | |
5642 | case R_PPC64_SECTOFF_LO: | |
5643 | case R_PPC64_SECTOFF_HI: | |
5644 | case R_PPC64_SECTOFF_HA: | |
5645 | case R_PPC64_SECTOFF_DS: | |
5646 | case R_PPC64_SECTOFF_LO_DS: | |
411e1bfb AM |
5647 | case R_PPC64_DTPREL16: |
5648 | case R_PPC64_DTPREL16_LO: | |
5649 | case R_PPC64_DTPREL16_HI: | |
5650 | case R_PPC64_DTPREL16_HA: | |
5651 | case R_PPC64_DTPREL16_DS: | |
5652 | case R_PPC64_DTPREL16_LO_DS: | |
f9c6b907 AM |
5653 | case R_PPC64_DTPREL16_HIGH: |
5654 | case R_PPC64_DTPREL16_HIGHA: | |
411e1bfb AM |
5655 | case R_PPC64_DTPREL16_HIGHER: |
5656 | case R_PPC64_DTPREL16_HIGHERA: | |
5657 | case R_PPC64_DTPREL16_HIGHEST: | |
5658 | case R_PPC64_DTPREL16_HIGHESTA: | |
5bd4f169 AM |
5659 | break; |
5660 | ||
ad8e1ba5 | 5661 | /* Nor do these. */ |
25f23106 AM |
5662 | case R_PPC64_REL16: |
5663 | case R_PPC64_REL16_LO: | |
5664 | case R_PPC64_REL16_HI: | |
5665 | case R_PPC64_REL16_HA: | |
a680de9a | 5666 | case R_PPC64_REL16DX_HA: |
25f23106 AM |
5667 | break; |
5668 | ||
45965137 AM |
5669 | /* Not supported as a dynamic relocation. */ |
5670 | case R_PPC64_ADDR64_LOCAL: | |
0e1862bb | 5671 | if (bfd_link_pic (info)) |
45965137 AM |
5672 | { |
5673 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) | |
5674 | ppc_howto_init (); | |
695344c0 | 5675 | /* xgettext:c-format */ |
174d0a74 | 5676 | info->callbacks->einfo (_("%H: %s reloc unsupported " |
cf97bcb0 | 5677 | "in shared libraries and PIEs\n"), |
45965137 AM |
5678 | abfd, sec, rel->r_offset, |
5679 | ppc64_elf_howto_table[r_type]->name); | |
5680 | bfd_set_error (bfd_error_bad_value); | |
5681 | return FALSE; | |
5682 | } | |
5683 | break; | |
5684 | ||
ad8e1ba5 | 5685 | case R_PPC64_TOC16: |
33c0ec9d AM |
5686 | case R_PPC64_TOC16_DS: |
5687 | htab->do_multi_toc = 1; | |
d77c8a4b | 5688 | ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1; |
1a0670f3 | 5689 | /* Fall through. */ |
ad8e1ba5 AM |
5690 | case R_PPC64_TOC16_LO: |
5691 | case R_PPC64_TOC16_HI: | |
5692 | case R_PPC64_TOC16_HA: | |
ad8e1ba5 | 5693 | case R_PPC64_TOC16_LO_DS: |
4c52953f | 5694 | sec->has_toc_reloc = 1; |
ad8e1ba5 AM |
5695 | break; |
5696 | ||
006589cf AM |
5697 | /* Marker reloc. */ |
5698 | case R_PPC64_ENTRY: | |
5699 | break; | |
5700 | ||
5bd4f169 AM |
5701 | /* This relocation describes the C++ object vtable hierarchy. |
5702 | Reconstruct it for later use during GC. */ | |
5703 | case R_PPC64_GNU_VTINHERIT: | |
c152c796 | 5704 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
b34976b6 | 5705 | return FALSE; |
5bd4f169 AM |
5706 | break; |
5707 | ||
5708 | /* This relocation describes which C++ vtable entries are actually | |
5709 | used. Record for later use during GC. */ | |
5710 | case R_PPC64_GNU_VTENTRY: | |
d17e0c6e JB |
5711 | BFD_ASSERT (h != NULL); |
5712 | if (h != NULL | |
5713 | && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) | |
b34976b6 | 5714 | return FALSE; |
5bd4f169 AM |
5715 | break; |
5716 | ||
721956f4 AM |
5717 | case R_PPC64_REL14: |
5718 | case R_PPC64_REL14_BRTAKEN: | |
5719 | case R_PPC64_REL14_BRNTAKEN: | |
220c76dd AM |
5720 | { |
5721 | asection *dest = NULL; | |
5722 | ||
5723 | /* Heuristic: If jumping outside our section, chances are | |
5724 | we are going to need a stub. */ | |
5725 | if (h != NULL) | |
5726 | { | |
5727 | /* If the sym is weak it may be overridden later, so | |
5728 | don't assume we know where a weak sym lives. */ | |
5729 | if (h->root.type == bfd_link_hash_defined) | |
5730 | dest = h->root.u.def.section; | |
5731 | } | |
5732 | else | |
87d72d41 AM |
5733 | { |
5734 | Elf_Internal_Sym *isym; | |
5735 | ||
5736 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, | |
5737 | abfd, r_symndx); | |
5738 | if (isym == NULL) | |
5739 | return FALSE; | |
5740 | ||
5741 | dest = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
5742 | } | |
5743 | ||
220c76dd | 5744 | if (dest != sec) |
7c8fe5c4 | 5745 | ppc64_elf_section_data (sec)->has_14bit_branch = 1; |
220c76dd | 5746 | } |
721956f4 AM |
5747 | /* Fall through. */ |
5748 | ||
5d1634d7 | 5749 | case R_PPC64_REL24: |
cbf95972 AM |
5750 | plt_list = ifunc; |
5751 | if (h != NULL) | |
5d1634d7 | 5752 | { |
e054468f AM |
5753 | h->needs_plt = 1; |
5754 | if (h->root.root.string[0] == '.' | |
5755 | && h->root.root.string[1] != '\0') | |
5756 | ((struct ppc_link_hash_entry *) h)->is_func = 1; | |
cbf95972 | 5757 | |
3a71aa26 | 5758 | if (h == tga || h == dottga) |
cbf95972 AM |
5759 | { |
5760 | sec->has_tls_reloc = 1; | |
5761 | if (rel != relocs | |
5762 | && (ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSGD | |
5763 | || ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSLD)) | |
5764 | /* We have a new-style __tls_get_addr call with | |
5765 | a marker reloc. */ | |
5766 | ; | |
5767 | else | |
5768 | /* Mark this section as having an old-style call. */ | |
5769 | sec->has_tls_get_addr_call = 1; | |
5770 | } | |
5771 | plt_list = &h->plt.plist; | |
411e1bfb | 5772 | } |
cbf95972 AM |
5773 | |
5774 | /* We may need a .plt entry if the function this reloc | |
5775 | refers to is in a shared lib. */ | |
5776 | if (plt_list | |
5777 | && !update_plt_info (abfd, plt_list, rel->r_addend)) | |
5778 | return FALSE; | |
411e1bfb AM |
5779 | break; |
5780 | ||
cbf95972 AM |
5781 | case R_PPC64_ADDR14: |
5782 | case R_PPC64_ADDR14_BRNTAKEN: | |
5783 | case R_PPC64_ADDR14_BRTAKEN: | |
5784 | case R_PPC64_ADDR24: | |
5785 | goto dodyn; | |
5786 | ||
411e1bfb AM |
5787 | case R_PPC64_TPREL64: |
5788 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_TPREL; | |
7c8bbca5 | 5789 | if (bfd_link_dll (info)) |
411e1bfb AM |
5790 | info->flags |= DF_STATIC_TLS; |
5791 | goto dotlstoc; | |
5792 | ||
5793 | case R_PPC64_DTPMOD64: | |
5794 | if (rel + 1 < rel_end | |
5795 | && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64) | |
5796 | && rel[1].r_offset == rel->r_offset + 8) | |
951fd09b | 5797 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_GD; |
411e1bfb | 5798 | else |
951fd09b | 5799 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_LD; |
411e1bfb AM |
5800 | goto dotlstoc; |
5801 | ||
5802 | case R_PPC64_DTPREL64: | |
5803 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_DTPREL; | |
5804 | if (rel != relocs | |
5805 | && rel[-1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPMOD64) | |
5806 | && rel[-1].r_offset == rel->r_offset - 8) | |
5807 | /* This is the second reloc of a dtpmod, dtprel pair. | |
5808 | Don't mark with TLS_DTPREL. */ | |
5809 | goto dodyn; | |
5810 | ||
5811 | dotlstoc: | |
5812 | sec->has_tls_reloc = 1; | |
5813 | if (h != NULL) | |
5814 | { | |
5815 | struct ppc_link_hash_entry *eh; | |
5816 | eh = (struct ppc_link_hash_entry *) h; | |
e7b938ca | 5817 | eh->tls_mask |= tls_type; |
411e1bfb AM |
5818 | } |
5819 | else | |
5820 | if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
5821 | rel->r_addend, tls_type)) | |
5822 | return FALSE; | |
5823 | ||
7c8fe5c4 AM |
5824 | ppc64_sec = ppc64_elf_section_data (sec); |
5825 | if (ppc64_sec->sec_type != sec_toc) | |
411e1bfb | 5826 | { |
3a71aa26 AM |
5827 | bfd_size_type amt; |
5828 | ||
e7b938ca | 5829 | /* One extra to simplify get_tls_mask. */ |
3a71aa26 AM |
5830 | amt = sec->size * sizeof (unsigned) / 8 + sizeof (unsigned); |
5831 | ppc64_sec->u.toc.symndx = bfd_zalloc (abfd, amt); | |
5832 | if (ppc64_sec->u.toc.symndx == NULL) | |
5833 | return FALSE; | |
5834 | amt = sec->size * sizeof (bfd_vma) / 8; | |
5835 | ppc64_sec->u.toc.add = bfd_zalloc (abfd, amt); | |
5836 | if (ppc64_sec->u.toc.add == NULL) | |
411e1bfb | 5837 | return FALSE; |
7c8fe5c4 AM |
5838 | BFD_ASSERT (ppc64_sec->sec_type == sec_normal); |
5839 | ppc64_sec->sec_type = sec_toc; | |
411e1bfb AM |
5840 | } |
5841 | BFD_ASSERT (rel->r_offset % 8 == 0); | |
3a71aa26 AM |
5842 | ppc64_sec->u.toc.symndx[rel->r_offset / 8] = r_symndx; |
5843 | ppc64_sec->u.toc.add[rel->r_offset / 8] = rel->r_addend; | |
951fd09b AM |
5844 | |
5845 | /* Mark the second slot of a GD or LD entry. | |
5846 | -1 to indicate GD and -2 to indicate LD. */ | |
5847 | if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_GD)) | |
3a71aa26 | 5848 | ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -1; |
951fd09b | 5849 | else if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_LD)) |
3a71aa26 | 5850 | ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -2; |
411e1bfb AM |
5851 | goto dodyn; |
5852 | ||
5853 | case R_PPC64_TPREL16: | |
5854 | case R_PPC64_TPREL16_LO: | |
5855 | case R_PPC64_TPREL16_HI: | |
5856 | case R_PPC64_TPREL16_HA: | |
5857 | case R_PPC64_TPREL16_DS: | |
5858 | case R_PPC64_TPREL16_LO_DS: | |
f9c6b907 AM |
5859 | case R_PPC64_TPREL16_HIGH: |
5860 | case R_PPC64_TPREL16_HIGHA: | |
411e1bfb AM |
5861 | case R_PPC64_TPREL16_HIGHER: |
5862 | case R_PPC64_TPREL16_HIGHERA: | |
5863 | case R_PPC64_TPREL16_HIGHEST: | |
5864 | case R_PPC64_TPREL16_HIGHESTA: | |
7c8bbca5 AM |
5865 | if (bfd_link_dll (info)) |
5866 | info->flags |= DF_STATIC_TLS; | |
5867 | goto dodyn; | |
5d1634d7 | 5868 | |
e86ce104 | 5869 | case R_PPC64_ADDR64: |
b9399fcf | 5870 | if (is_opd |
1e2f5b6e | 5871 | && rel + 1 < rel_end |
4ce794b7 | 5872 | && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC) |
1e2f5b6e | 5873 | { |
8387904d | 5874 | if (h != NULL) |
8c5b4e52 | 5875 | ((struct ppc_link_hash_entry *) h)->is_func = 1; |
1e2f5b6e | 5876 | } |
e86ce104 AM |
5877 | /* Fall through. */ |
5878 | ||
65f38f15 AM |
5879 | case R_PPC64_ADDR16: |
5880 | case R_PPC64_ADDR16_DS: | |
5881 | case R_PPC64_ADDR16_HA: | |
5882 | case R_PPC64_ADDR16_HI: | |
f9c6b907 AM |
5883 | case R_PPC64_ADDR16_HIGH: |
5884 | case R_PPC64_ADDR16_HIGHA: | |
65f38f15 AM |
5885 | case R_PPC64_ADDR16_HIGHER: |
5886 | case R_PPC64_ADDR16_HIGHERA: | |
5887 | case R_PPC64_ADDR16_HIGHEST: | |
5888 | case R_PPC64_ADDR16_HIGHESTA: | |
5889 | case R_PPC64_ADDR16_LO: | |
5890 | case R_PPC64_ADDR16_LO_DS: | |
0e1862bb | 5891 | if (h != NULL && !bfd_link_pic (info) && abiversion (abfd) != 1 |
a345bc8d AM |
5892 | && rel->r_addend == 0) |
5893 | { | |
5894 | /* We may need a .plt entry if this reloc refers to a | |
5895 | function in a shared lib. */ | |
5896 | if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend)) | |
5897 | return FALSE; | |
5898 | h->pointer_equality_needed = 1; | |
5899 | } | |
5900 | /* Fall through. */ | |
5901 | ||
5902 | case R_PPC64_REL30: | |
5903 | case R_PPC64_REL32: | |
5904 | case R_PPC64_REL64: | |
65f38f15 | 5905 | case R_PPC64_ADDR32: |
65f38f15 AM |
5906 | case R_PPC64_UADDR16: |
5907 | case R_PPC64_UADDR32: | |
5908 | case R_PPC64_UADDR64: | |
5bd4f169 | 5909 | case R_PPC64_TOC: |
0e1862bb | 5910 | if (h != NULL && !bfd_link_pic (info)) |
81848ca0 | 5911 | /* We may need a copy reloc. */ |
f5385ebf | 5912 | h->non_got_ref = 1; |
81848ca0 | 5913 | |
41bd81ab | 5914 | /* Don't propagate .opd relocs. */ |
b9399fcf | 5915 | if (NO_OPD_RELOCS && is_opd) |
e86ce104 | 5916 | break; |
e86ce104 | 5917 | |
65f38f15 AM |
5918 | /* If we are creating a shared library, and this is a reloc |
5919 | against a global symbol, or a non PC relative reloc | |
5920 | against a local symbol, then we need to copy the reloc | |
5921 | into the shared library. However, if we are linking with | |
5922 | -Bsymbolic, we do not need to copy a reloc against a | |
5923 | global symbol which is defined in an object we are | |
5924 | including in the link (i.e., DEF_REGULAR is set). At | |
5925 | this point we have not seen all the input files, so it is | |
5926 | possible that DEF_REGULAR is not set now but will be set | |
5927 | later (it is never cleared). In case of a weak definition, | |
5928 | DEF_REGULAR may be cleared later by a strong definition in | |
5929 | a shared library. We account for that possibility below by | |
f4656909 | 5930 | storing information in the dyn_relocs field of the hash |
65f38f15 AM |
5931 | table entry. A similar situation occurs when creating |
5932 | shared libraries and symbol visibility changes render the | |
5933 | symbol local. | |
5934 | ||
5935 | If on the other hand, we are creating an executable, we | |
5936 | may need to keep relocations for symbols satisfied by a | |
5937 | dynamic library if we manage to avoid copy relocs for the | |
5938 | symbol. */ | |
411e1bfb | 5939 | dodyn: |
0e1862bb | 5940 | if ((bfd_link_pic (info) |
1d483afe | 5941 | && (must_be_dyn_reloc (info, r_type) |
65f38f15 | 5942 | || (h != NULL |
198f1157 | 5943 | && (!SYMBOLIC_BIND (info, h) |
65f38f15 | 5944 | || h->root.type == bfd_link_hash_defweak |
f5385ebf | 5945 | || !h->def_regular)))) |
f4656909 | 5946 | || (ELIMINATE_COPY_RELOCS |
0e1862bb | 5947 | && !bfd_link_pic (info) |
65f38f15 AM |
5948 | && h != NULL |
5949 | && (h->root.type == bfd_link_hash_defweak | |
25f23106 | 5950 | || !h->def_regular)) |
0e1862bb | 5951 | || (!bfd_link_pic (info) |
25f23106 | 5952 | && ifunc != NULL)) |
5bd4f169 | 5953 | { |
65f38f15 AM |
5954 | /* We must copy these reloc types into the output file. |
5955 | Create a reloc section in dynobj and make room for | |
5956 | this reloc. */ | |
5bd4f169 AM |
5957 | if (sreloc == NULL) |
5958 | { | |
83bac4b0 NC |
5959 | sreloc = _bfd_elf_make_dynamic_reloc_section |
5960 | (sec, htab->elf.dynobj, 3, abfd, /*rela?*/ TRUE); | |
65f38f15 | 5961 | |
5bd4f169 | 5962 | if (sreloc == NULL) |
83bac4b0 | 5963 | return FALSE; |
5bd4f169 AM |
5964 | } |
5965 | ||
65f38f15 AM |
5966 | /* If this is a global symbol, we count the number of |
5967 | relocations we need for this symbol. */ | |
5968 | if (h != NULL) | |
5969 | { | |
19e08130 AM |
5970 | struct elf_dyn_relocs *p; |
5971 | struct elf_dyn_relocs **head; | |
5972 | ||
ec338859 | 5973 | head = &((struct ppc_link_hash_entry *) h)->dyn_relocs; |
19e08130 AM |
5974 | p = *head; |
5975 | if (p == NULL || p->sec != sec) | |
5976 | { | |
5977 | p = bfd_alloc (htab->elf.dynobj, sizeof *p); | |
5978 | if (p == NULL) | |
5979 | return FALSE; | |
5980 | p->next = *head; | |
5981 | *head = p; | |
5982 | p->sec = sec; | |
5983 | p->count = 0; | |
5984 | p->pc_count = 0; | |
5985 | } | |
5986 | p->count += 1; | |
5987 | if (!must_be_dyn_reloc (info, r_type)) | |
5988 | p->pc_count += 1; | |
65f38f15 AM |
5989 | } |
5990 | else | |
5991 | { | |
ec338859 AM |
5992 | /* Track dynamic relocs needed for local syms too. |
5993 | We really need local syms available to do this | |
5994 | easily. Oh well. */ | |
19e08130 AM |
5995 | struct ppc_dyn_relocs *p; |
5996 | struct ppc_dyn_relocs **head; | |
5997 | bfd_boolean is_ifunc; | |
ec338859 | 5998 | asection *s; |
6edfbbad | 5999 | void *vpp; |
87d72d41 | 6000 | Elf_Internal_Sym *isym; |
6edfbbad | 6001 | |
87d72d41 AM |
6002 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, |
6003 | abfd, r_symndx); | |
6004 | if (isym == NULL) | |
b34976b6 | 6005 | return FALSE; |
ec338859 | 6006 | |
87d72d41 AM |
6007 | s = bfd_section_from_elf_index (abfd, isym->st_shndx); |
6008 | if (s == NULL) | |
6009 | s = sec; | |
6010 | ||
6edfbbad | 6011 | vpp = &elf_section_data (s)->local_dynrel; |
19e08130 AM |
6012 | head = (struct ppc_dyn_relocs **) vpp; |
6013 | is_ifunc = ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC; | |
6014 | p = *head; | |
6015 | if (p != NULL && p->sec == sec && p->ifunc != is_ifunc) | |
6016 | p = p->next; | |
6017 | if (p == NULL || p->sec != sec || p->ifunc != is_ifunc) | |
6018 | { | |
6019 | p = bfd_alloc (htab->elf.dynobj, sizeof *p); | |
6020 | if (p == NULL) | |
6021 | return FALSE; | |
6022 | p->next = *head; | |
6023 | *head = p; | |
6024 | p->sec = sec; | |
6025 | p->ifunc = is_ifunc; | |
6026 | p->count = 0; | |
6027 | } | |
6028 | p->count += 1; | |
ec338859 | 6029 | } |
65f38f15 | 6030 | } |
5bd4f169 | 6031 | break; |
65f38f15 AM |
6032 | |
6033 | default: | |
96e0dda4 | 6034 | break; |
5bd4f169 AM |
6035 | } |
6036 | } | |
6037 | ||
b34976b6 | 6038 | return TRUE; |
5bd4f169 AM |
6039 | } |
6040 | ||
ee67d69a AM |
6041 | /* Merge backend specific data from an object file to the output |
6042 | object file when linking. */ | |
6043 | ||
6044 | static bfd_boolean | |
50e03d47 | 6045 | ppc64_elf_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info) |
ee67d69a | 6046 | { |
50e03d47 | 6047 | bfd *obfd = info->output_bfd; |
ee67d69a AM |
6048 | unsigned long iflags, oflags; |
6049 | ||
6050 | if ((ibfd->flags & BFD_LINKER_CREATED) != 0) | |
6051 | return TRUE; | |
6052 | ||
6053 | if (!is_ppc64_elf (ibfd) || !is_ppc64_elf (obfd)) | |
6054 | return TRUE; | |
6055 | ||
50e03d47 | 6056 | if (!_bfd_generic_verify_endian_match (ibfd, info)) |
ee67d69a AM |
6057 | return FALSE; |
6058 | ||
6059 | iflags = elf_elfheader (ibfd)->e_flags; | |
6060 | oflags = elf_elfheader (obfd)->e_flags; | |
6061 | ||
f6c7c3e8 | 6062 | if (iflags & ~EF_PPC64_ABI) |
ee67d69a | 6063 | { |
4eca0228 | 6064 | _bfd_error_handler |
695344c0 | 6065 | /* xgettext:c-format */ |
871b3ab2 | 6066 | (_("%pB uses unknown e_flags 0x%lx"), ibfd, iflags); |
ee67d69a AM |
6067 | bfd_set_error (bfd_error_bad_value); |
6068 | return FALSE; | |
6069 | } | |
f6c7c3e8 | 6070 | else if (iflags != oflags && iflags != 0) |
ee67d69a | 6071 | { |
4eca0228 | 6072 | _bfd_error_handler |
695344c0 | 6073 | /* xgettext:c-format */ |
871b3ab2 | 6074 | (_("%pB: ABI version %ld is not compatible with ABI version %ld output"), |
ee67d69a AM |
6075 | ibfd, iflags, oflags); |
6076 | bfd_set_error (bfd_error_bad_value); | |
6077 | return FALSE; | |
6078 | } | |
6079 | ||
50e03d47 | 6080 | _bfd_elf_ppc_merge_fp_attributes (ibfd, info); |
005d79fd | 6081 | |
ee67d69a | 6082 | /* Merge Tag_compatibility attributes and any common GNU ones. */ |
50e03d47 | 6083 | _bfd_elf_merge_object_attributes (ibfd, info); |
ee67d69a AM |
6084 | |
6085 | return TRUE; | |
6086 | } | |
6087 | ||
6088 | static bfd_boolean | |
6089 | ppc64_elf_print_private_bfd_data (bfd *abfd, void *ptr) | |
6090 | { | |
6091 | /* Print normal ELF private data. */ | |
6092 | _bfd_elf_print_private_bfd_data (abfd, ptr); | |
6093 | ||
6094 | if (elf_elfheader (abfd)->e_flags != 0) | |
6095 | { | |
6096 | FILE *file = ptr; | |
6097 | ||
ee67d69a AM |
6098 | fprintf (file, _("private flags = 0x%lx:"), |
6099 | elf_elfheader (abfd)->e_flags); | |
6100 | ||
6101 | if ((elf_elfheader (abfd)->e_flags & EF_PPC64_ABI) != 0) | |
6102 | fprintf (file, _(" [abiv%ld]"), | |
6103 | elf_elfheader (abfd)->e_flags & EF_PPC64_ABI); | |
6104 | fputc ('\n', file); | |
6105 | } | |
6106 | ||
6107 | return TRUE; | |
6108 | } | |
6109 | ||
8387904d | 6110 | /* OFFSET in OPD_SEC specifies a function descriptor. Return the address |
b53dfeb2 AM |
6111 | of the code entry point, and its section, which must be in the same |
6112 | object as OPD_SEC. Returns (bfd_vma) -1 on error. */ | |
8387904d AM |
6113 | |
6114 | static bfd_vma | |
6115 | opd_entry_value (asection *opd_sec, | |
6116 | bfd_vma offset, | |
6117 | asection **code_sec, | |
aef36ac1 AM |
6118 | bfd_vma *code_off, |
6119 | bfd_boolean in_code_sec) | |
8387904d AM |
6120 | { |
6121 | bfd *opd_bfd = opd_sec->owner; | |
8860955f | 6122 | Elf_Internal_Rela *relocs; |
8387904d | 6123 | Elf_Internal_Rela *lo, *hi, *look; |
645ea6a9 | 6124 | bfd_vma val; |
8387904d | 6125 | |
9f296da3 AM |
6126 | /* No relocs implies we are linking a --just-symbols object, or looking |
6127 | at a final linked executable with addr2line or somesuch. */ | |
4b85d634 AM |
6128 | if (opd_sec->reloc_count == 0) |
6129 | { | |
729eabd5 | 6130 | bfd_byte *contents = ppc64_elf_tdata (opd_bfd)->opd.contents; |
3b36f7e6 | 6131 | |
729eabd5 AM |
6132 | if (contents == NULL) |
6133 | { | |
6134 | if (!bfd_malloc_and_get_section (opd_bfd, opd_sec, &contents)) | |
6135 | return (bfd_vma) -1; | |
6136 | ppc64_elf_tdata (opd_bfd)->opd.contents = contents; | |
6137 | } | |
ee1e4ede | 6138 | |
dbb3fbbb | 6139 | /* PR 17512: file: 64b9dfbb. */ |
451dfd38 | 6140 | if (offset + 7 >= opd_sec->size || offset + 7 < offset) |
dbb3fbbb NC |
6141 | return (bfd_vma) -1; |
6142 | ||
729eabd5 | 6143 | val = bfd_get_64 (opd_bfd, contents + offset); |
aef36ac1 AM |
6144 | if (code_sec != NULL) |
6145 | { | |
6146 | asection *sec, *likely = NULL; | |
ee1e4ede | 6147 | |
aef36ac1 | 6148 | if (in_code_sec) |
4b85d634 | 6149 | { |
aef36ac1 AM |
6150 | sec = *code_sec; |
6151 | if (sec->vma <= val | |
6152 | && val < sec->vma + sec->size) | |
6153 | likely = sec; | |
6154 | else | |
6155 | val = -1; | |
6156 | } | |
6157 | else | |
6158 | for (sec = opd_bfd->sections; sec != NULL; sec = sec->next) | |
6159 | if (sec->vma <= val | |
6160 | && (sec->flags & SEC_LOAD) != 0 | |
6161 | && (sec->flags & SEC_ALLOC) != 0) | |
6162 | likely = sec; | |
6163 | if (likely != NULL) | |
6164 | { | |
6165 | *code_sec = likely; | |
6166 | if (code_off != NULL) | |
6167 | *code_off = val - likely->vma; | |
4b85d634 AM |
6168 | } |
6169 | } | |
aef36ac1 | 6170 | return val; |
4b85d634 AM |
6171 | } |
6172 | ||
0c8d6e5c | 6173 | BFD_ASSERT (is_ppc64_elf (opd_bfd)); |
0ffa91dd | 6174 | |
729eabd5 | 6175 | relocs = ppc64_elf_tdata (opd_bfd)->opd.relocs; |
8860955f AM |
6176 | if (relocs == NULL) |
6177 | relocs = _bfd_elf_link_read_relocs (opd_bfd, opd_sec, NULL, NULL, TRUE); | |
877a8638 NC |
6178 | /* PR 17512: file: df8e1fd6. */ |
6179 | if (relocs == NULL) | |
6180 | return (bfd_vma) -1; | |
645ea6a9 | 6181 | |
8387904d | 6182 | /* Go find the opd reloc at the sym address. */ |
8860955f | 6183 | lo = relocs; |
8387904d | 6184 | hi = lo + opd_sec->reloc_count - 1; /* ignore last reloc */ |
645ea6a9 | 6185 | val = (bfd_vma) -1; |
8387904d AM |
6186 | while (lo < hi) |
6187 | { | |
6188 | look = lo + (hi - lo) / 2; | |
6189 | if (look->r_offset < offset) | |
6190 | lo = look + 1; | |
6191 | else if (look->r_offset > offset) | |
6192 | hi = look; | |
6193 | else | |
6194 | { | |
0ffa91dd NC |
6195 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (opd_bfd); |
6196 | ||
8387904d AM |
6197 | if (ELF64_R_TYPE (look->r_info) == R_PPC64_ADDR64 |
6198 | && ELF64_R_TYPE ((look + 1)->r_info) == R_PPC64_TOC) | |
6199 | { | |
6200 | unsigned long symndx = ELF64_R_SYM (look->r_info); | |
b53dfeb2 | 6201 | asection *sec = NULL; |
8387904d | 6202 | |
b53dfeb2 AM |
6203 | if (symndx >= symtab_hdr->sh_info |
6204 | && elf_sym_hashes (opd_bfd) != NULL) | |
8387904d AM |
6205 | { |
6206 | struct elf_link_hash_entry **sym_hashes; | |
6207 | struct elf_link_hash_entry *rh; | |
6208 | ||
6209 | sym_hashes = elf_sym_hashes (opd_bfd); | |
6210 | rh = sym_hashes[symndx - symtab_hdr->sh_info]; | |
128205bb AM |
6211 | if (rh != NULL) |
6212 | { | |
6213 | rh = elf_follow_link (rh); | |
bb854a36 AM |
6214 | if (rh->root.type != bfd_link_hash_defined |
6215 | && rh->root.type != bfd_link_hash_defweak) | |
6216 | break; | |
6217 | if (rh->root.u.def.section->owner == opd_bfd) | |
b53dfeb2 | 6218 | { |
bb854a36 AM |
6219 | val = rh->root.u.def.value; |
6220 | sec = rh->root.u.def.section; | |
b53dfeb2 AM |
6221 | } |
6222 | } | |
6223 | } | |
6224 | ||
6225 | if (sec == NULL) | |
6226 | { | |
6227 | Elf_Internal_Sym *sym; | |
6228 | ||
6229 | if (symndx < symtab_hdr->sh_info) | |
6230 | { | |
6231 | sym = (Elf_Internal_Sym *) symtab_hdr->contents; | |
6232 | if (sym == NULL) | |
6233 | { | |
6234 | size_t symcnt = symtab_hdr->sh_info; | |
6235 | sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr, | |
6236 | symcnt, 0, | |
6237 | NULL, NULL, NULL); | |
6238 | if (sym == NULL) | |
6239 | break; | |
6240 | symtab_hdr->contents = (bfd_byte *) sym; | |
6241 | } | |
6242 | sym += symndx; | |
128205bb AM |
6243 | } |
6244 | else | |
6245 | { | |
b53dfeb2 AM |
6246 | sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr, |
6247 | 1, symndx, | |
6248 | NULL, NULL, NULL); | |
128205bb AM |
6249 | if (sym == NULL) |
6250 | break; | |
128205bb | 6251 | } |
b53dfeb2 AM |
6252 | sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx); |
6253 | if (sec == NULL) | |
6254 | break; | |
6255 | BFD_ASSERT ((sec->flags & SEC_MERGE) == 0); | |
6256 | val = sym->st_value; | |
8387904d | 6257 | } |
b53dfeb2 | 6258 | |
8387904d AM |
6259 | val += look->r_addend; |
6260 | if (code_off != NULL) | |
6261 | *code_off = val; | |
6262 | if (code_sec != NULL) | |
aef36ac1 AM |
6263 | { |
6264 | if (in_code_sec && *code_sec != sec) | |
6265 | return -1; | |
6266 | else | |
6267 | *code_sec = sec; | |
6268 | } | |
b53dfeb2 | 6269 | if (sec->output_section != NULL) |
8387904d | 6270 | val += sec->output_section->vma + sec->output_offset; |
8387904d AM |
6271 | } |
6272 | break; | |
6273 | } | |
6274 | } | |
645ea6a9 | 6275 | |
645ea6a9 | 6276 | return val; |
8387904d AM |
6277 | } |
6278 | ||
aef36ac1 AM |
6279 | /* If the ELF symbol SYM might be a function in SEC, return the |
6280 | function size and set *CODE_OFF to the function's entry point, | |
6281 | otherwise return zero. */ | |
9f296da3 | 6282 | |
aef36ac1 AM |
6283 | static bfd_size_type |
6284 | ppc64_elf_maybe_function_sym (const asymbol *sym, asection *sec, | |
6285 | bfd_vma *code_off) | |
9f296da3 | 6286 | { |
aef36ac1 AM |
6287 | bfd_size_type size; |
6288 | ||
6289 | if ((sym->flags & (BSF_SECTION_SYM | BSF_FILE | BSF_OBJECT | |
6290 | | BSF_THREAD_LOCAL | BSF_RELC | BSF_SRELC)) != 0) | |
6291 | return 0; | |
6292 | ||
6293 | size = 0; | |
6294 | if (!(sym->flags & BSF_SYNTHETIC)) | |
6295 | size = ((elf_symbol_type *) sym)->internal_elf_sym.st_size; | |
6296 | ||
6297 | if (strcmp (sym->section->name, ".opd") == 0) | |
9f296da3 | 6298 | { |
b07bca4e AM |
6299 | struct _opd_sec_data *opd = get_opd_info (sym->section); |
6300 | bfd_vma symval = sym->value; | |
6301 | ||
6302 | if (opd != NULL | |
6303 | && opd->adjust != NULL | |
6304 | && elf_section_data (sym->section)->relocs != NULL) | |
6305 | { | |
6306 | /* opd_entry_value will use cached relocs that have been | |
6307 | adjusted, but with raw symbols. That means both local | |
6308 | and global symbols need adjusting. */ | |
6309 | long adjust = opd->adjust[OPD_NDX (symval)]; | |
6310 | if (adjust == -1) | |
6311 | return 0; | |
6312 | symval += adjust; | |
6313 | } | |
6314 | ||
6315 | if (opd_entry_value (sym->section, symval, | |
aef36ac1 AM |
6316 | &sec, code_off, TRUE) == (bfd_vma) -1) |
6317 | return 0; | |
6318 | /* An old ABI binary with dot-syms has a size of 24 on the .opd | |
6319 | symbol. This size has nothing to do with the code size of the | |
6320 | function, which is what we're supposed to return, but the | |
6321 | code size isn't available without looking up the dot-sym. | |
6322 | However, doing that would be a waste of time particularly | |
6323 | since elf_find_function will look at the dot-sym anyway. | |
6324 | Now, elf_find_function will keep the largest size of any | |
6325 | function sym found at the code address of interest, so return | |
6326 | 1 here to avoid it incorrectly caching a larger function size | |
6327 | for a small function. This does mean we return the wrong | |
6328 | size for a new-ABI function of size 24, but all that does is | |
6329 | disable caching for such functions. */ | |
6330 | if (size == 24) | |
6331 | size = 1; | |
9f296da3 | 6332 | } |
aef36ac1 AM |
6333 | else |
6334 | { | |
6335 | if (sym->section != sec) | |
6336 | return 0; | |
6337 | *code_off = sym->value; | |
6338 | } | |
6339 | if (size == 0) | |
6340 | size = 1; | |
6341 | return size; | |
9f296da3 AM |
6342 | } |
6343 | ||
f378ab09 AM |
6344 | /* Return true if symbol is a strong function defined in an ELFv2 |
6345 | object with st_other localentry bits of zero, ie. its local entry | |
6346 | point coincides with its global entry point. */ | |
6347 | ||
6348 | static bfd_boolean | |
6349 | is_elfv2_localentry0 (struct elf_link_hash_entry *h) | |
6350 | { | |
6351 | return (h != NULL | |
6352 | && h->type == STT_FUNC | |
6353 | && h->root.type == bfd_link_hash_defined | |
6354 | && (STO_PPC64_LOCAL_MASK & h->other) == 0 | |
8b5f1ed8 | 6355 | && !((struct ppc_link_hash_entry *) h)->non_zero_localentry |
f378ab09 AM |
6356 | && is_ppc64_elf (h->root.u.def.section->owner) |
6357 | && abiversion (h->root.u.def.section->owner) >= 2); | |
6358 | } | |
6359 | ||
854b41e7 AM |
6360 | /* Return true if symbol is defined in a regular object file. */ |
6361 | ||
6362 | static bfd_boolean | |
6363 | is_static_defined (struct elf_link_hash_entry *h) | |
6364 | { | |
6365 | return ((h->root.type == bfd_link_hash_defined | |
6366 | || h->root.type == bfd_link_hash_defweak) | |
6367 | && h->root.u.def.section != NULL | |
6368 | && h->root.u.def.section->output_section != NULL); | |
6369 | } | |
6370 | ||
b31867b6 AM |
6371 | /* If FDH is a function descriptor symbol, return the associated code |
6372 | entry symbol if it is defined. Return NULL otherwise. */ | |
6373 | ||
6374 | static struct ppc_link_hash_entry * | |
6375 | defined_code_entry (struct ppc_link_hash_entry *fdh) | |
6376 | { | |
6377 | if (fdh->is_func_descriptor) | |
6378 | { | |
6379 | struct ppc_link_hash_entry *fh = ppc_follow_link (fdh->oh); | |
6380 | if (fh->elf.root.type == bfd_link_hash_defined | |
6381 | || fh->elf.root.type == bfd_link_hash_defweak) | |
6382 | return fh; | |
6383 | } | |
6384 | return NULL; | |
6385 | } | |
6386 | ||
6387 | /* If FH is a function code entry symbol, return the associated | |
6388 | function descriptor symbol if it is defined. Return NULL otherwise. */ | |
6389 | ||
6390 | static struct ppc_link_hash_entry * | |
6391 | defined_func_desc (struct ppc_link_hash_entry *fh) | |
6392 | { | |
6393 | if (fh->oh != NULL | |
6394 | && fh->oh->is_func_descriptor) | |
6395 | { | |
6396 | struct ppc_link_hash_entry *fdh = ppc_follow_link (fh->oh); | |
6397 | if (fdh->elf.root.type == bfd_link_hash_defined | |
6398 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
6399 | return fdh; | |
6400 | } | |
6401 | return NULL; | |
6402 | } | |
6403 | ||
8c5b4e52 AM |
6404 | static bfd_boolean func_desc_adjust (struct elf_link_hash_entry *, void *); |
6405 | ||
6406 | /* Garbage collect sections, after first dealing with dot-symbols. */ | |
6407 | ||
6408 | static bfd_boolean | |
6409 | ppc64_elf_gc_sections (bfd *abfd, struct bfd_link_info *info) | |
6410 | { | |
6411 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
6412 | ||
6413 | if (htab != NULL && htab->need_func_desc_adj) | |
6414 | { | |
6415 | elf_link_hash_traverse (&htab->elf, func_desc_adjust, info); | |
6416 | htab->need_func_desc_adj = 0; | |
6417 | } | |
6418 | return bfd_elf_gc_sections (abfd, info); | |
6419 | } | |
6420 | ||
74f0fb50 AM |
6421 | /* Mark all our entry sym sections, both opd and code section. */ |
6422 | ||
6423 | static void | |
6424 | ppc64_elf_gc_keep (struct bfd_link_info *info) | |
6425 | { | |
6426 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
6427 | struct bfd_sym_chain *sym; | |
6428 | ||
4dfe6ac6 NC |
6429 | if (htab == NULL) |
6430 | return; | |
6431 | ||
74f0fb50 AM |
6432 | for (sym = info->gc_sym_list; sym != NULL; sym = sym->next) |
6433 | { | |
b31867b6 | 6434 | struct ppc_link_hash_entry *eh, *fh; |
74f0fb50 AM |
6435 | asection *sec; |
6436 | ||
6437 | eh = (struct ppc_link_hash_entry *) | |
b31867b6 | 6438 | elf_link_hash_lookup (&htab->elf, sym->name, FALSE, FALSE, TRUE); |
74f0fb50 AM |
6439 | if (eh == NULL) |
6440 | continue; | |
6441 | if (eh->elf.root.type != bfd_link_hash_defined | |
6442 | && eh->elf.root.type != bfd_link_hash_defweak) | |
6443 | continue; | |
6444 | ||
b31867b6 AM |
6445 | fh = defined_code_entry (eh); |
6446 | if (fh != NULL) | |
74f0fb50 | 6447 | { |
b31867b6 | 6448 | sec = fh->elf.root.u.def.section; |
74f0fb50 AM |
6449 | sec->flags |= SEC_KEEP; |
6450 | } | |
6451 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL | |
6452 | && opd_entry_value (eh->elf.root.u.def.section, | |
6453 | eh->elf.root.u.def.value, | |
aef36ac1 | 6454 | &sec, NULL, FALSE) != (bfd_vma) -1) |
74f0fb50 AM |
6455 | sec->flags |= SEC_KEEP; |
6456 | ||
6457 | sec = eh->elf.root.u.def.section; | |
6458 | sec->flags |= SEC_KEEP; | |
6459 | } | |
6460 | } | |
6461 | ||
64d03ab5 AM |
6462 | /* Mark sections containing dynamically referenced symbols. When |
6463 | building shared libraries, we must assume that any visible symbol is | |
6464 | referenced. */ | |
6465 | ||
6466 | static bfd_boolean | |
6467 | ppc64_elf_gc_mark_dynamic_ref (struct elf_link_hash_entry *h, void *inf) | |
6468 | { | |
6469 | struct bfd_link_info *info = (struct bfd_link_info *) inf; | |
6470 | struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h; | |
b31867b6 | 6471 | struct ppc_link_hash_entry *fdh; |
b407645f | 6472 | struct bfd_elf_dynamic_list *d = info->dynamic_list; |
64d03ab5 | 6473 | |
64d03ab5 | 6474 | /* Dynamic linking info is on the func descriptor sym. */ |
b31867b6 AM |
6475 | fdh = defined_func_desc (eh); |
6476 | if (fdh != NULL) | |
6477 | eh = fdh; | |
64d03ab5 AM |
6478 | |
6479 | if ((eh->elf.root.type == bfd_link_hash_defined | |
6480 | || eh->elf.root.type == bfd_link_hash_defweak) | |
87e79a65 | 6481 | && ((eh->elf.ref_dynamic && !eh->elf.forced_local) |
1c9177d9 | 6482 | || ((eh->elf.def_regular || ELF_COMMON_DEF_P (&eh->elf)) |
64d03ab5 | 6483 | && ELF_ST_VISIBILITY (eh->elf.other) != STV_INTERNAL |
4c58e0d8 | 6484 | && ELF_ST_VISIBILITY (eh->elf.other) != STV_HIDDEN |
0e1862bb | 6485 | && (!bfd_link_executable (info) |
e278ae05 | 6486 | || info->gc_keep_exported |
b407645f AM |
6487 | || info->export_dynamic |
6488 | || (eh->elf.dynamic | |
6489 | && d != NULL | |
6490 | && (*d->match) (&d->head, NULL, eh->elf.root.root.string))) | |
e278ae05 | 6491 | && (eh->elf.versioned >= versioned |
4c58e0d8 AM |
6492 | || !bfd_hide_sym_by_version (info->version_info, |
6493 | eh->elf.root.root.string))))) | |
64d03ab5 AM |
6494 | { |
6495 | asection *code_sec; | |
b31867b6 | 6496 | struct ppc_link_hash_entry *fh; |
64d03ab5 AM |
6497 | |
6498 | eh->elf.root.u.def.section->flags |= SEC_KEEP; | |
6499 | ||
6500 | /* Function descriptor syms cause the associated | |
6501 | function code sym section to be marked. */ | |
b31867b6 AM |
6502 | fh = defined_code_entry (eh); |
6503 | if (fh != NULL) | |
6504 | { | |
6505 | code_sec = fh->elf.root.u.def.section; | |
6506 | code_sec->flags |= SEC_KEEP; | |
6507 | } | |
64d03ab5 AM |
6508 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL |
6509 | && opd_entry_value (eh->elf.root.u.def.section, | |
6510 | eh->elf.root.u.def.value, | |
aef36ac1 | 6511 | &code_sec, NULL, FALSE) != (bfd_vma) -1) |
64d03ab5 AM |
6512 | code_sec->flags |= SEC_KEEP; |
6513 | } | |
6514 | ||
6515 | return TRUE; | |
6516 | } | |
6517 | ||
5bd4f169 AM |
6518 | /* Return the section that should be marked against GC for a given |
6519 | relocation. */ | |
6520 | ||
6521 | static asection * | |
4ce794b7 | 6522 | ppc64_elf_gc_mark_hook (asection *sec, |
fb34365b | 6523 | struct bfd_link_info *info, |
4ce794b7 AM |
6524 | Elf_Internal_Rela *rel, |
6525 | struct elf_link_hash_entry *h, | |
6526 | Elf_Internal_Sym *sym) | |
5bd4f169 | 6527 | { |
ccfa59ea AM |
6528 | asection *rsec; |
6529 | ||
ccfa59ea AM |
6530 | /* Syms return NULL if we're marking .opd, so we avoid marking all |
6531 | function sections, as all functions are referenced in .opd. */ | |
6532 | rsec = NULL; | |
6533 | if (get_opd_info (sec) != NULL) | |
6534 | return rsec; | |
1e2f5b6e | 6535 | |
5bd4f169 AM |
6536 | if (h != NULL) |
6537 | { | |
04c9666a | 6538 | enum elf_ppc64_reloc_type r_type; |
b31867b6 | 6539 | struct ppc_link_hash_entry *eh, *fh, *fdh; |
a33d1f77 | 6540 | |
4ce794b7 | 6541 | r_type = ELF64_R_TYPE (rel->r_info); |
a33d1f77 | 6542 | switch (r_type) |
5bd4f169 AM |
6543 | { |
6544 | case R_PPC64_GNU_VTINHERIT: | |
6545 | case R_PPC64_GNU_VTENTRY: | |
6546 | break; | |
6547 | ||
6548 | default: | |
6549 | switch (h->root.type) | |
6550 | { | |
6551 | case bfd_link_hash_defined: | |
6552 | case bfd_link_hash_defweak: | |
ccfa59ea | 6553 | eh = (struct ppc_link_hash_entry *) h; |
b31867b6 AM |
6554 | fdh = defined_func_desc (eh); |
6555 | if (fdh != NULL) | |
8c5b4e52 AM |
6556 | { |
6557 | /* -mcall-aixdesc code references the dot-symbol on | |
6558 | a call reloc. Mark the function descriptor too | |
6559 | against garbage collection. */ | |
6560 | fdh->elf.mark = 1; | |
60d67dc8 AM |
6561 | if (fdh->elf.is_weakalias) |
6562 | weakdef (&fdh->elf)->mark = 1; | |
8c5b4e52 AM |
6563 | eh = fdh; |
6564 | } | |
1e2f5b6e AM |
6565 | |
6566 | /* Function descriptor syms cause the associated | |
6567 | function code sym section to be marked. */ | |
b31867b6 AM |
6568 | fh = defined_code_entry (eh); |
6569 | if (fh != NULL) | |
ccfa59ea AM |
6570 | { |
6571 | /* They also mark their opd section. */ | |
74f0fb50 | 6572 | eh->elf.root.u.def.section->gc_mark = 1; |
ccfa59ea | 6573 | |
b31867b6 | 6574 | rsec = fh->elf.root.u.def.section; |
ccfa59ea | 6575 | } |
8387904d AM |
6576 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL |
6577 | && opd_entry_value (eh->elf.root.u.def.section, | |
6578 | eh->elf.root.u.def.value, | |
aef36ac1 | 6579 | &rsec, NULL, FALSE) != (bfd_vma) -1) |
74f0fb50 | 6580 | eh->elf.root.u.def.section->gc_mark = 1; |
ccfa59ea | 6581 | else |
1e2f5b6e AM |
6582 | rsec = h->root.u.def.section; |
6583 | break; | |
5bd4f169 AM |
6584 | |
6585 | case bfd_link_hash_common: | |
1e2f5b6e AM |
6586 | rsec = h->root.u.c.p->section; |
6587 | break; | |
5bd4f169 AM |
6588 | |
6589 | default: | |
fb34365b | 6590 | return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); |
5bd4f169 AM |
6591 | } |
6592 | } | |
6593 | } | |
6594 | else | |
6595 | { | |
74f0fb50 | 6596 | struct _opd_sec_data *opd; |
1e2f5b6e AM |
6597 | |
6598 | rsec = bfd_section_from_elf_index (sec->owner, sym->st_shndx); | |
74f0fb50 AM |
6599 | opd = get_opd_info (rsec); |
6600 | if (opd != NULL && opd->func_sec != NULL) | |
ccfa59ea | 6601 | { |
74f0fb50 | 6602 | rsec->gc_mark = 1; |
ccfa59ea | 6603 | |
51aecdc5 | 6604 | rsec = opd->func_sec[OPD_NDX (sym->st_value + rel->r_addend)]; |
ccfa59ea | 6605 | } |
5bd4f169 AM |
6606 | } |
6607 | ||
1e2f5b6e | 6608 | return rsec; |
5bd4f169 AM |
6609 | } |
6610 | ||
deb0e272 AM |
6611 | /* The maximum size of .sfpr. */ |
6612 | #define SFPR_MAX (218*4) | |
6613 | ||
6614 | struct sfpr_def_parms | |
6615 | { | |
699733f6 AM |
6616 | const char name[12]; |
6617 | unsigned char lo, hi; | |
deb0e272 AM |
6618 | bfd_byte * (*write_ent) (bfd *, bfd_byte *, int); |
6619 | bfd_byte * (*write_tail) (bfd *, bfd_byte *, int); | |
6620 | }; | |
6621 | ||
a4b6fadd AM |
6622 | /* Auto-generate _save*, _rest* functions in .sfpr. |
6623 | If STUB_SEC is non-null, define alias symbols in STUB_SEC | |
6624 | instead. */ | |
deb0e272 | 6625 | |
4dfe6ac6 | 6626 | static bfd_boolean |
a4b6fadd AM |
6627 | sfpr_define (struct bfd_link_info *info, |
6628 | const struct sfpr_def_parms *parm, | |
6629 | asection *stub_sec) | |
deb0e272 AM |
6630 | { |
6631 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
6632 | unsigned int i; | |
6633 | size_t len = strlen (parm->name); | |
6634 | bfd_boolean writing = FALSE; | |
699733f6 | 6635 | char sym[16]; |
deb0e272 | 6636 | |
4dfe6ac6 NC |
6637 | if (htab == NULL) |
6638 | return FALSE; | |
6639 | ||
deb0e272 AM |
6640 | memcpy (sym, parm->name, len); |
6641 | sym[len + 2] = 0; | |
6642 | ||
6643 | for (i = parm->lo; i <= parm->hi; i++) | |
6644 | { | |
a4b6fadd | 6645 | struct ppc_link_hash_entry *h; |
deb0e272 AM |
6646 | |
6647 | sym[len + 0] = i / 10 + '0'; | |
6648 | sym[len + 1] = i % 10 + '0'; | |
a4b6fadd | 6649 | h = (struct ppc_link_hash_entry *) |
b32547cd | 6650 | elf_link_hash_lookup (&htab->elf, sym, writing, TRUE, TRUE); |
a4b6fadd | 6651 | if (stub_sec != NULL) |
deb0e272 | 6652 | { |
a4b6fadd AM |
6653 | if (h != NULL |
6654 | && h->elf.root.type == bfd_link_hash_defined | |
6655 | && h->elf.root.u.def.section == htab->sfpr) | |
6656 | { | |
6657 | struct elf_link_hash_entry *s; | |
6658 | char buf[32]; | |
6659 | sprintf (buf, "%08x.%s", stub_sec->id & 0xffffffff, sym); | |
6660 | s = elf_link_hash_lookup (&htab->elf, buf, TRUE, TRUE, FALSE); | |
6661 | if (s == NULL) | |
6662 | return FALSE; | |
6663 | if (s->root.type == bfd_link_hash_new | |
6664 | || (s->root.type = bfd_link_hash_defined | |
6665 | && s->root.u.def.section == stub_sec)) | |
6666 | { | |
6667 | s->root.type = bfd_link_hash_defined; | |
6668 | s->root.u.def.section = stub_sec; | |
7dda8d3c | 6669 | s->root.u.def.value = (stub_sec->size - htab->sfpr->size |
a4b6fadd AM |
6670 | + h->elf.root.u.def.value); |
6671 | s->ref_regular = 1; | |
6672 | s->def_regular = 1; | |
6673 | s->ref_regular_nonweak = 1; | |
6674 | s->forced_local = 1; | |
6675 | s->non_elf = 0; | |
6676 | s->root.linker_def = 1; | |
6677 | } | |
6678 | } | |
6679 | continue; | |
6680 | } | |
6681 | if (h != NULL) | |
6682 | { | |
6683 | h->save_res = 1; | |
6684 | if (!h->elf.def_regular) | |
deb0e272 | 6685 | { |
a4b6fadd AM |
6686 | h->elf.root.type = bfd_link_hash_defined; |
6687 | h->elf.root.u.def.section = htab->sfpr; | |
6688 | h->elf.root.u.def.value = htab->sfpr->size; | |
6689 | h->elf.type = STT_FUNC; | |
6690 | h->elf.def_regular = 1; | |
b32547cd | 6691 | h->elf.non_elf = 0; |
a4b6fadd AM |
6692 | _bfd_elf_link_hash_hide_symbol (info, &h->elf, TRUE); |
6693 | writing = TRUE; | |
deb0e272 | 6694 | if (htab->sfpr->contents == NULL) |
a4b6fadd AM |
6695 | { |
6696 | htab->sfpr->contents = bfd_alloc (htab->elf.dynobj, SFPR_MAX); | |
6697 | if (htab->sfpr->contents == NULL) | |
6698 | return FALSE; | |
6699 | } | |
deb0e272 AM |
6700 | } |
6701 | } | |
6702 | if (writing) | |
6703 | { | |
6704 | bfd_byte *p = htab->sfpr->contents + htab->sfpr->size; | |
6705 | if (i != parm->hi) | |
6706 | p = (*parm->write_ent) (htab->elf.dynobj, p, i); | |
6707 | else | |
6708 | p = (*parm->write_tail) (htab->elf.dynobj, p, i); | |
6709 | htab->sfpr->size = p - htab->sfpr->contents; | |
6710 | } | |
6711 | } | |
6712 | ||
6713 | return TRUE; | |
6714 | } | |
6715 | ||
6716 | static bfd_byte * | |
6717 | savegpr0 (bfd *abfd, bfd_byte *p, int r) | |
6718 | { | |
6719 | bfd_put_32 (abfd, STD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
6720 | return p + 4; | |
6721 | } | |
6722 | ||
6723 | static bfd_byte * | |
6724 | savegpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
6725 | { | |
6726 | p = savegpr0 (abfd, p, r); | |
a078d95a | 6727 | bfd_put_32 (abfd, STD_R0_0R1 + STK_LR, p); |
deb0e272 AM |
6728 | p = p + 4; |
6729 | bfd_put_32 (abfd, BLR, p); | |
6730 | return p + 4; | |
6731 | } | |
6732 | ||
6733 | static bfd_byte * | |
6734 | restgpr0 (bfd *abfd, bfd_byte *p, int r) | |
6735 | { | |
6736 | bfd_put_32 (abfd, LD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
6737 | return p + 4; | |
6738 | } | |
6739 | ||
6740 | static bfd_byte * | |
6741 | restgpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
6742 | { | |
a078d95a | 6743 | bfd_put_32 (abfd, LD_R0_0R1 + STK_LR, p); |
deb0e272 AM |
6744 | p = p + 4; |
6745 | p = restgpr0 (abfd, p, r); | |
6746 | bfd_put_32 (abfd, MTLR_R0, p); | |
6747 | p = p + 4; | |
6748 | if (r == 29) | |
6749 | { | |
6750 | p = restgpr0 (abfd, p, 30); | |
6751 | p = restgpr0 (abfd, p, 31); | |
6752 | } | |
6753 | bfd_put_32 (abfd, BLR, p); | |
6754 | return p + 4; | |
6755 | } | |
6756 | ||
6757 | static bfd_byte * | |
6758 | savegpr1 (bfd *abfd, bfd_byte *p, int r) | |
6759 | { | |
6760 | bfd_put_32 (abfd, STD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
6761 | return p + 4; | |
6762 | } | |
6763 | ||
6764 | static bfd_byte * | |
6765 | savegpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
6766 | { | |
6767 | p = savegpr1 (abfd, p, r); | |
6768 | bfd_put_32 (abfd, BLR, p); | |
6769 | return p + 4; | |
6770 | } | |
6771 | ||
6772 | static bfd_byte * | |
6773 | restgpr1 (bfd *abfd, bfd_byte *p, int r) | |
6774 | { | |
6775 | bfd_put_32 (abfd, LD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
6776 | return p + 4; | |
6777 | } | |
6778 | ||
6779 | static bfd_byte * | |
6780 | restgpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
6781 | { | |
6782 | p = restgpr1 (abfd, p, r); | |
6783 | bfd_put_32 (abfd, BLR, p); | |
6784 | return p + 4; | |
6785 | } | |
6786 | ||
6787 | static bfd_byte * | |
6788 | savefpr (bfd *abfd, bfd_byte *p, int r) | |
6789 | { | |
6790 | bfd_put_32 (abfd, STFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
6791 | return p + 4; | |
6792 | } | |
6793 | ||
6794 | static bfd_byte * | |
6795 | savefpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
6796 | { | |
6797 | p = savefpr (abfd, p, r); | |
a078d95a | 6798 | bfd_put_32 (abfd, STD_R0_0R1 + STK_LR, p); |
deb0e272 AM |
6799 | p = p + 4; |
6800 | bfd_put_32 (abfd, BLR, p); | |
6801 | return p + 4; | |
6802 | } | |
6803 | ||
6804 | static bfd_byte * | |
6805 | restfpr (bfd *abfd, bfd_byte *p, int r) | |
6806 | { | |
6807 | bfd_put_32 (abfd, LFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
6808 | return p + 4; | |
6809 | } | |
6810 | ||
6811 | static bfd_byte * | |
6812 | restfpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
6813 | { | |
a078d95a | 6814 | bfd_put_32 (abfd, LD_R0_0R1 + STK_LR, p); |
deb0e272 AM |
6815 | p = p + 4; |
6816 | p = restfpr (abfd, p, r); | |
6817 | bfd_put_32 (abfd, MTLR_R0, p); | |
6818 | p = p + 4; | |
6819 | if (r == 29) | |
6820 | { | |
6821 | p = restfpr (abfd, p, 30); | |
6822 | p = restfpr (abfd, p, 31); | |
6823 | } | |
6824 | bfd_put_32 (abfd, BLR, p); | |
6825 | return p + 4; | |
6826 | } | |
6827 | ||
6828 | static bfd_byte * | |
6829 | savefpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
6830 | { | |
6831 | p = savefpr (abfd, p, r); | |
6832 | bfd_put_32 (abfd, BLR, p); | |
6833 | return p + 4; | |
6834 | } | |
6835 | ||
6836 | static bfd_byte * | |
6837 | restfpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
6838 | { | |
6839 | p = restfpr (abfd, p, r); | |
6840 | bfd_put_32 (abfd, BLR, p); | |
6841 | return p + 4; | |
6842 | } | |
6843 | ||
6844 | static bfd_byte * | |
6845 | savevr (bfd *abfd, bfd_byte *p, int r) | |
6846 | { | |
6847 | bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p); | |
6848 | p = p + 4; | |
6849 | bfd_put_32 (abfd, STVX_VR0_R12_R0 + (r << 21), p); | |
6850 | return p + 4; | |
6851 | } | |
6852 | ||
6853 | static bfd_byte * | |
6854 | savevr_tail (bfd *abfd, bfd_byte *p, int r) | |
6855 | { | |
6856 | p = savevr (abfd, p, r); | |
6857 | bfd_put_32 (abfd, BLR, p); | |
6858 | return p + 4; | |
6859 | } | |
6860 | ||
6861 | static bfd_byte * | |
6862 | restvr (bfd *abfd, bfd_byte *p, int r) | |
6863 | { | |
6864 | bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p); | |
6865 | p = p + 4; | |
6866 | bfd_put_32 (abfd, LVX_VR0_R12_R0 + (r << 21), p); | |
6867 | return p + 4; | |
6868 | } | |
6869 | ||
6870 | static bfd_byte * | |
6871 | restvr_tail (bfd *abfd, bfd_byte *p, int r) | |
6872 | { | |
6873 | p = restvr (abfd, p, r); | |
6874 | bfd_put_32 (abfd, BLR, p); | |
6875 | return p + 4; | |
6876 | } | |
6877 | ||
e86ce104 AM |
6878 | /* Called via elf_link_hash_traverse to transfer dynamic linking |
6879 | information on function code symbol entries to their corresponding | |
6880 | function descriptor symbol entries. */ | |
deb0e272 | 6881 | |
b34976b6 | 6882 | static bfd_boolean |
4ce794b7 | 6883 | func_desc_adjust (struct elf_link_hash_entry *h, void *inf) |
5bd4f169 | 6884 | { |
e86ce104 | 6885 | struct bfd_link_info *info; |
65f38f15 | 6886 | struct ppc_link_hash_table *htab; |
50bc7936 AM |
6887 | struct ppc_link_hash_entry *fh; |
6888 | struct ppc_link_hash_entry *fdh; | |
6889 | bfd_boolean force_local; | |
5bd4f169 | 6890 | |
50bc7936 AM |
6891 | fh = (struct ppc_link_hash_entry *) h; |
6892 | if (fh->elf.root.type == bfd_link_hash_indirect) | |
b34976b6 | 6893 | return TRUE; |
e86ce104 | 6894 | |
8c5b4e52 AM |
6895 | if (!fh->is_func) |
6896 | return TRUE; | |
6897 | ||
6898 | if (fh->elf.root.root.string[0] != '.' | |
6899 | || fh->elf.root.root.string[1] == '\0') | |
6900 | return TRUE; | |
6901 | ||
4ce794b7 | 6902 | info = inf; |
65f38f15 | 6903 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
6904 | if (htab == NULL) |
6905 | return FALSE; | |
5bd4f169 | 6906 | |
8c5b4e52 AM |
6907 | /* Find the corresponding function descriptor symbol. */ |
6908 | fdh = lookup_fdh (fh, htab); | |
6909 | ||
c09bdfe5 AM |
6910 | /* Resolve undefined references to dot-symbols as the value |
6911 | in the function descriptor, if we have one in a regular object. | |
6912 | This is to satisfy cases like ".quad .foo". Calls to functions | |
6913 | in dynamic objects are handled elsewhere. */ | |
8c5b4e52 AM |
6914 | if ((fh->elf.root.type == bfd_link_hash_undefined |
6915 | || fh->elf.root.type == bfd_link_hash_undefweak) | |
6916 | && (fdh->elf.root.type == bfd_link_hash_defined | |
6917 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
b31867b6 AM |
6918 | && get_opd_info (fdh->elf.root.u.def.section) != NULL |
6919 | && opd_entry_value (fdh->elf.root.u.def.section, | |
6920 | fdh->elf.root.u.def.value, | |
c09bdfe5 | 6921 | &fh->elf.root.u.def.section, |
aef36ac1 | 6922 | &fh->elf.root.u.def.value, FALSE) != (bfd_vma) -1) |
c09bdfe5 | 6923 | { |
b31867b6 | 6924 | fh->elf.root.type = fdh->elf.root.type; |
f5385ebf | 6925 | fh->elf.forced_local = 1; |
b31867b6 AM |
6926 | fh->elf.def_regular = fdh->elf.def_regular; |
6927 | fh->elf.def_dynamic = fdh->elf.def_dynamic; | |
c09bdfe5 AM |
6928 | } |
6929 | ||
8c5b4e52 AM |
6930 | if (!fh->elf.dynamic) |
6931 | { | |
6932 | struct plt_entry *ent; | |
5bd4f169 | 6933 | |
8c5b4e52 AM |
6934 | for (ent = fh->elf.plt.plist; ent != NULL; ent = ent->next) |
6935 | if (ent->plt.refcount > 0) | |
6936 | break; | |
6937 | if (ent == NULL) | |
6938 | return TRUE; | |
6939 | } | |
5bd4f169 | 6940 | |
8c5b4e52 | 6941 | /* Create a descriptor as undefined if necessary. */ |
50bc7936 | 6942 | if (fdh == NULL |
0e1862bb | 6943 | && !bfd_link_executable (info) |
50bc7936 AM |
6944 | && (fh->elf.root.type == bfd_link_hash_undefined |
6945 | || fh->elf.root.type == bfd_link_hash_undefweak)) | |
6946 | { | |
908b32fc | 6947 | fdh = make_fdh (info, fh); |
bb700d78 AM |
6948 | if (fdh == NULL) |
6949 | return FALSE; | |
50bc7936 | 6950 | } |
648cca2c | 6951 | |
8c5b4e52 | 6952 | /* We can't support overriding of symbols on a fake descriptor. */ |
908b32fc AM |
6953 | if (fdh != NULL |
6954 | && fdh->fake | |
8c5b4e52 AM |
6955 | && (fh->elf.root.type == bfd_link_hash_defined |
6956 | || fh->elf.root.type == bfd_link_hash_defweak)) | |
6957 | _bfd_elf_link_hash_hide_symbol (info, &fdh->elf, TRUE); | |
908b32fc | 6958 | |
8c5b4e52 AM |
6959 | /* Transfer dynamic linking information to the function descriptor. */ |
6960 | if (fdh != NULL) | |
6961 | { | |
f5385ebf AM |
6962 | fdh->elf.ref_regular |= fh->elf.ref_regular; |
6963 | fdh->elf.ref_dynamic |= fh->elf.ref_dynamic; | |
6964 | fdh->elf.ref_regular_nonweak |= fh->elf.ref_regular_nonweak; | |
6965 | fdh->elf.non_got_ref |= fh->elf.non_got_ref; | |
8c5b4e52 AM |
6966 | fdh->elf.dynamic |= fh->elf.dynamic; |
6967 | fdh->elf.needs_plt |= (fh->elf.needs_plt | |
6968 | || fh->elf.type == STT_FUNC | |
6969 | || fh->elf.type == STT_GNU_IFUNC); | |
6970 | move_plt_plist (fh, fdh); | |
6971 | ||
6972 | if (!fdh->elf.forced_local | |
6973 | && fh->elf.dynindx != -1) | |
6974 | if (!bfd_elf_link_record_dynamic_symbol (info, &fdh->elf)) | |
6975 | return FALSE; | |
e86ce104 AM |
6976 | } |
6977 | ||
50bc7936 AM |
6978 | /* Now that the info is on the function descriptor, clear the |
6979 | function code sym info. Any function code syms for which we | |
6980 | don't have a definition in a regular file, we force local. | |
6981 | This prevents a shared library from exporting syms that have | |
6982 | been imported from another library. Function code syms that | |
6983 | are really in the library we must leave global to prevent the | |
6984 | linker dragging in a definition from a static library. */ | |
93f3fa99 AM |
6985 | force_local = (!fh->elf.def_regular |
6986 | || fdh == NULL | |
6987 | || !fdh->elf.def_regular | |
6988 | || fdh->elf.forced_local); | |
50bc7936 AM |
6989 | _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local); |
6990 | ||
b34976b6 | 6991 | return TRUE; |
e86ce104 | 6992 | } |
40b8271b | 6993 | |
a4b6fadd AM |
6994 | static const struct sfpr_def_parms save_res_funcs[] = |
6995 | { | |
6996 | { "_savegpr0_", 14, 31, savegpr0, savegpr0_tail }, | |
6997 | { "_restgpr0_", 14, 29, restgpr0, restgpr0_tail }, | |
6998 | { "_restgpr0_", 30, 31, restgpr0, restgpr0_tail }, | |
6999 | { "_savegpr1_", 14, 31, savegpr1, savegpr1_tail }, | |
7000 | { "_restgpr1_", 14, 31, restgpr1, restgpr1_tail }, | |
7001 | { "_savefpr_", 14, 31, savefpr, savefpr0_tail }, | |
7002 | { "_restfpr_", 14, 29, restfpr, restfpr0_tail }, | |
7003 | { "_restfpr_", 30, 31, restfpr, restfpr0_tail }, | |
7004 | { "._savef", 14, 31, savefpr, savefpr1_tail }, | |
7005 | { "._restf", 14, 31, restfpr, restfpr1_tail }, | |
7006 | { "_savevr_", 20, 31, savevr, savevr_tail }, | |
7007 | { "_restvr_", 20, 31, restvr, restvr_tail } | |
7008 | }; | |
7009 | ||
e86ce104 | 7010 | /* Called near the start of bfd_elf_size_dynamic_sections. We use |
82bd7b59 AM |
7011 | this hook to a) provide some gcc support functions, and b) transfer |
7012 | dynamic linking information gathered so far on function code symbol | |
7013 | entries, to their corresponding function descriptor symbol entries. */ | |
deb0e272 | 7014 | |
b34976b6 | 7015 | static bfd_boolean |
4ce794b7 AM |
7016 | ppc64_elf_func_desc_adjust (bfd *obfd ATTRIBUTE_UNUSED, |
7017 | struct bfd_link_info *info) | |
e86ce104 AM |
7018 | { |
7019 | struct ppc_link_hash_table *htab; | |
7020 | ||
7021 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
7022 | if (htab == NULL) |
7023 | return FALSE; | |
7024 | ||
b32547cd AM |
7025 | /* Provide any missing _save* and _rest* functions. */ |
7026 | if (htab->sfpr != NULL) | |
7027 | { | |
7028 | unsigned int i; | |
7029 | ||
7030 | htab->sfpr->size = 0; | |
7031 | for (i = 0; i < ARRAY_SIZE (save_res_funcs); i++) | |
7032 | if (!sfpr_define (info, &save_res_funcs[i], NULL)) | |
7033 | return FALSE; | |
7034 | if (htab->sfpr->size == 0) | |
7035 | htab->sfpr->flags |= SEC_EXCLUDE; | |
7036 | } | |
7037 | ||
7038 | if (bfd_link_relocatable (info)) | |
7039 | return TRUE; | |
7040 | ||
7041 | if (htab->elf.hgot != NULL) | |
dba6fa9b AM |
7042 | { |
7043 | _bfd_elf_link_hash_hide_symbol (info, htab->elf.hgot, TRUE); | |
7044 | /* Make .TOC. defined so as to prevent it being made dynamic. | |
7045 | The wrong value here is fixed later in ppc64_elf_set_toc. */ | |
43417696 AM |
7046 | if (!htab->elf.hgot->def_regular |
7047 | || htab->elf.hgot->root.type != bfd_link_hash_defined) | |
7048 | { | |
7049 | htab->elf.hgot->root.type = bfd_link_hash_defined; | |
7050 | htab->elf.hgot->root.u.def.value = 0; | |
7051 | htab->elf.hgot->root.u.def.section = bfd_abs_section_ptr; | |
7052 | htab->elf.hgot->def_regular = 1; | |
7053 | htab->elf.hgot->root.linker_def = 1; | |
7054 | } | |
dba6fa9b | 7055 | htab->elf.hgot->type = STT_OBJECT; |
dba6fa9b AM |
7056 | htab->elf.hgot->other = ((htab->elf.hgot->other & ~ELF_ST_VISIBILITY (-1)) |
7057 | | STV_HIDDEN); | |
7058 | } | |
c66bb0ee | 7059 | |
8c5b4e52 AM |
7060 | if (htab->need_func_desc_adj) |
7061 | { | |
7062 | elf_link_hash_traverse (&htab->elf, func_desc_adjust, info); | |
7063 | htab->need_func_desc_adj = 0; | |
7064 | } | |
805fc799 | 7065 | |
b34976b6 | 7066 | return TRUE; |
e86ce104 AM |
7067 | } |
7068 | ||
98bbb1b8 | 7069 | /* Find dynamic relocs for H that apply to read-only sections. */ |
a345bc8d | 7070 | |
98bbb1b8 | 7071 | static asection * |
a345bc8d AM |
7072 | readonly_dynrelocs (struct elf_link_hash_entry *h) |
7073 | { | |
7074 | struct ppc_link_hash_entry *eh; | |
7075 | struct elf_dyn_relocs *p; | |
7076 | ||
7077 | eh = (struct ppc_link_hash_entry *) h; | |
7078 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
7079 | { | |
7080 | asection *s = p->sec->output_section; | |
7081 | ||
7082 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
98bbb1b8 | 7083 | return p->sec; |
a345bc8d | 7084 | } |
98bbb1b8 | 7085 | return NULL; |
a345bc8d AM |
7086 | } |
7087 | ||
d311bc8b | 7088 | /* Return true if we have dynamic relocs against H or any of its weak |
ab2477e1 AM |
7089 | aliases, that apply to read-only sections. Cannot be used after |
7090 | size_dynamic_sections. */ | |
d311bc8b AM |
7091 | |
7092 | static bfd_boolean | |
7093 | alias_readonly_dynrelocs (struct elf_link_hash_entry *h) | |
7094 | { | |
7095 | struct ppc_link_hash_entry *eh; | |
7096 | ||
7097 | eh = (struct ppc_link_hash_entry *) h; | |
7098 | do | |
7099 | { | |
7100 | if (readonly_dynrelocs (&eh->elf)) | |
7101 | return TRUE; | |
ab2477e1 | 7102 | eh = (struct ppc_link_hash_entry *) eh->elf.u.alias; |
d311bc8b AM |
7103 | } while (eh != NULL && &eh->elf != h); |
7104 | ||
7105 | return FALSE; | |
7106 | } | |
8a2058b5 | 7107 | |
8a9e8e72 AM |
7108 | /* Return whether EH has pc-relative dynamic relocs. */ |
7109 | ||
7110 | static bfd_boolean | |
7111 | pc_dynrelocs (struct ppc_link_hash_entry *eh) | |
7112 | { | |
7113 | struct elf_dyn_relocs *p; | |
7114 | ||
7115 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
7116 | if (p->pc_count != 0) | |
7117 | return TRUE; | |
7118 | return FALSE; | |
7119 | } | |
7120 | ||
8a2058b5 AM |
7121 | /* Return true if a global entry stub will be created for H. Valid |
7122 | for ELFv2 before plt entries have been allocated. */ | |
7123 | ||
7124 | static bfd_boolean | |
7125 | global_entry_stub (struct elf_link_hash_entry *h) | |
7126 | { | |
7127 | struct plt_entry *pent; | |
7128 | ||
7129 | if (!h->pointer_equality_needed | |
7130 | || h->def_regular) | |
7131 | return FALSE; | |
7132 | ||
7133 | for (pent = h->plt.plist; pent != NULL; pent = pent->next) | |
7134 | if (pent->plt.refcount > 0 | |
7135 | && pent->addend == 0) | |
7136 | return TRUE; | |
7137 | ||
7138 | return FALSE; | |
7139 | } | |
7140 | ||
e86ce104 AM |
7141 | /* Adjust a symbol defined by a dynamic object and referenced by a |
7142 | regular object. The current definition is in some section of the | |
7143 | dynamic object, but we're not including those sections. We have to | |
7144 | change the definition to something the rest of the link can | |
7145 | understand. */ | |
7146 | ||
b34976b6 | 7147 | static bfd_boolean |
4ce794b7 AM |
7148 | ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info *info, |
7149 | struct elf_link_hash_entry *h) | |
e86ce104 AM |
7150 | { |
7151 | struct ppc_link_hash_table *htab; | |
5474d94f | 7152 | asection *s, *srel; |
e86ce104 AM |
7153 | |
7154 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
7155 | if (htab == NULL) |
7156 | return FALSE; | |
e86ce104 AM |
7157 | |
7158 | /* Deal with function syms. */ | |
7159 | if (h->type == STT_FUNC | |
e054468f | 7160 | || h->type == STT_GNU_IFUNC |
f5385ebf | 7161 | || h->needs_plt) |
e86ce104 | 7162 | { |
529fe20e AM |
7163 | bfd_boolean local = (((struct ppc_link_hash_entry *) h)->save_res |
7164 | || SYMBOL_CALLS_LOCAL (info, h) | |
7165 | || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)); | |
7166 | /* Discard dyn_relocs when non-pic if we've decided that a | |
7167 | function symbol is local and not an ifunc. We keep dynamic | |
7168 | relocs for ifuncs when local rather than always emitting a | |
7169 | plt call stub for them and defining the symbol on the call | |
7170 | stub. We can't do that for ELFv1 anyway (a function symbol | |
7171 | is defined on a descriptor, not code) and it can be faster at | |
7172 | run-time due to not needing to bounce through a stub. The | |
7173 | dyn_relocs for ifuncs will be applied even in a static | |
7174 | executable. */ | |
7175 | if (!bfd_link_pic (info) | |
7176 | && h->type != STT_GNU_IFUNC | |
7177 | && local) | |
7178 | ((struct ppc_link_hash_entry *) h)->dyn_relocs = NULL; | |
7179 | ||
e86ce104 AM |
7180 | /* Clear procedure linkage table information for any symbol that |
7181 | won't need a .plt entry. */ | |
411e1bfb AM |
7182 | struct plt_entry *ent; |
7183 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) | |
7184 | if (ent->plt.refcount > 0) | |
7185 | break; | |
8387904d | 7186 | if (ent == NULL |
529fe20e | 7187 | || (h->type != STT_GNU_IFUNC && local)) |
40b8271b | 7188 | { |
411e1bfb | 7189 | h->plt.plist = NULL; |
f5385ebf | 7190 | h->needs_plt = 0; |
d1eca1e4 | 7191 | h->pointer_equality_needed = 0; |
40b8271b | 7192 | } |
8a2058b5 | 7193 | else if (abiversion (info->output_bfd) >= 2) |
a345bc8d | 7194 | { |
d1eca1e4 AM |
7195 | /* Taking a function's address in a read/write section |
7196 | doesn't require us to define the function symbol in the | |
7197 | executable on a global entry stub. A dynamic reloc can | |
8a2058b5 AM |
7198 | be used instead. The reason we prefer a few more dynamic |
7199 | relocs is that calling via a global entry stub costs a | |
7200 | few more instructions, and pointer_equality_needed causes | |
7201 | extra work in ld.so when resolving these symbols. */ | |
529fe20e | 7202 | if (global_entry_stub (h)) |
d1eca1e4 | 7203 | { |
ab2477e1 | 7204 | if (!readonly_dynrelocs (h)) |
529fe20e AM |
7205 | { |
7206 | h->pointer_equality_needed = 0; | |
7207 | /* If we haven't seen a branch reloc then we don't need | |
7208 | a plt entry. */ | |
7209 | if (!h->needs_plt) | |
7210 | h->plt.plist = NULL; | |
7211 | } | |
7212 | else if (!bfd_link_pic (info)) | |
7213 | /* We are going to be defining the function symbol on the | |
7214 | plt stub, so no dyn_relocs needed when non-pic. */ | |
7215 | ((struct ppc_link_hash_entry *) h)->dyn_relocs = NULL; | |
d1eca1e4 AM |
7216 | } |
7217 | ||
3988aed5 AM |
7218 | /* ELFv2 function symbols can't have copy relocs. */ |
7219 | return TRUE; | |
7220 | } | |
7221 | else if (!h->needs_plt | |
ab2477e1 | 7222 | && !readonly_dynrelocs (h)) |
3988aed5 AM |
7223 | { |
7224 | /* If we haven't seen a branch reloc then we don't need a | |
7225 | plt entry. */ | |
7226 | h->plt.plist = NULL; | |
7227 | h->pointer_equality_needed = 0; | |
a345bc8d AM |
7228 | return TRUE; |
7229 | } | |
5bd4f169 | 7230 | } |
bbd7ec4a | 7231 | else |
411e1bfb | 7232 | h->plt.plist = NULL; |
5bd4f169 AM |
7233 | |
7234 | /* If this is a weak symbol, and there is a real definition, the | |
7235 | processor independent code will have arranged for us to see the | |
7236 | real definition first, and we can just use the same value. */ | |
60d67dc8 | 7237 | if (h->is_weakalias) |
5bd4f169 | 7238 | { |
60d67dc8 AM |
7239 | struct elf_link_hash_entry *def = weakdef (h); |
7240 | BFD_ASSERT (def->root.type == bfd_link_hash_defined); | |
7241 | h->root.u.def.section = def->root.u.def.section; | |
7242 | h->root.u.def.value = def->root.u.def.value; | |
4a7e5234 AM |
7243 | if (def->root.u.def.section == htab->elf.sdynbss |
7244 | || def->root.u.def.section == htab->elf.sdynrelro) | |
7245 | ((struct ppc_link_hash_entry *) h)->dyn_relocs = NULL; | |
b34976b6 | 7246 | return TRUE; |
5bd4f169 AM |
7247 | } |
7248 | ||
5bd4f169 AM |
7249 | /* If we are creating a shared library, we must presume that the |
7250 | only references to the symbol are via the global offset table. | |
7251 | For such cases we need not do anything here; the relocations will | |
7252 | be handled correctly by relocate_section. */ | |
0e1862bb | 7253 | if (bfd_link_pic (info)) |
b34976b6 | 7254 | return TRUE; |
5bd4f169 | 7255 | |
65f38f15 AM |
7256 | /* If there are no references to this symbol that do not use the |
7257 | GOT, we don't need to generate a copy reloc. */ | |
f5385ebf | 7258 | if (!h->non_got_ref) |
b34976b6 | 7259 | return TRUE; |
65f38f15 | 7260 | |
b186458a | 7261 | /* Don't generate a copy reloc for symbols defined in the executable. */ |
d93d1c80 | 7262 | if (!h->def_dynamic || !h->ref_regular || h->def_regular |
b186458a | 7263 | |
d93d1c80 AM |
7264 | /* If -z nocopyreloc was given, don't generate them either. */ |
7265 | || info->nocopyreloc | |
a127494f | 7266 | |
dce2246a | 7267 | /* If we don't find any dynamic relocs in read-only sections, then |
d93d1c80 | 7268 | we'll be keeping the dynamic relocs and avoiding the copy reloc. */ |
d311bc8b | 7269 | || (ELIMINATE_COPY_RELOCS && !alias_readonly_dynrelocs (h)) |
65f38f15 | 7270 | |
d93d1c80 AM |
7271 | /* Protected variables do not work with .dynbss. The copy in |
7272 | .dynbss won't be used by the shared library with the protected | |
7273 | definition for the variable. Text relocations are preferable | |
7274 | to an incorrect program. */ | |
7275 | || h->protected_def) | |
529fe20e | 7276 | return TRUE; |
a127494f | 7277 | |
5d35169e | 7278 | if (h->plt.plist != NULL) |
97b639ba AM |
7279 | { |
7280 | /* We should never get here, but unfortunately there are versions | |
7281 | of gcc out there that improperly (for this ABI) put initialized | |
7282 | function pointers, vtable refs and suchlike in read-only | |
7283 | sections. Allow them to proceed, but warn that this might | |
7284 | break at runtime. */ | |
25f53a85 | 7285 | info->callbacks->einfo |
c1c8c1ef | 7286 | (_("%P: copy reloc against `%pT' requires lazy plt linking; " |
25f53a85 | 7287 | "avoid setting LD_BIND_NOW=1 or upgrade gcc\n"), |
97b639ba AM |
7288 | h->root.root.string); |
7289 | } | |
5d35169e AM |
7290 | |
7291 | /* This is a reference to a symbol defined by a dynamic object which | |
7292 | is not a function. */ | |
7293 | ||
5bd4f169 AM |
7294 | /* We must allocate the symbol in our .dynbss section, which will |
7295 | become part of the .bss section of the executable. There will be | |
7296 | an entry for this symbol in the .dynsym section. The dynamic | |
7297 | object will contain position independent code, so all references | |
7298 | from the dynamic object to this symbol will go through the global | |
7299 | offset table. The dynamic linker will use the .dynsym entry to | |
7300 | determine the address it must put in the global offset table, so | |
7301 | both the dynamic object and the regular object will refer to the | |
7302 | same memory location for the variable. */ | |
5474d94f AM |
7303 | if ((h->root.u.def.section->flags & SEC_READONLY) != 0) |
7304 | { | |
7305 | s = htab->elf.sdynrelro; | |
7306 | srel = htab->elf.sreldynrelro; | |
7307 | } | |
7308 | else | |
7309 | { | |
7310 | s = htab->elf.sdynbss; | |
7311 | srel = htab->elf.srelbss; | |
7312 | } | |
1d7e9d18 | 7313 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0) |
5bd4f169 | 7314 | { |
4a7e5234 AM |
7315 | /* We must generate a R_PPC64_COPY reloc to tell the dynamic |
7316 | linker to copy the initial value out of the dynamic object | |
7317 | and into the runtime process image. */ | |
5474d94f | 7318 | srel->size += sizeof (Elf64_External_Rela); |
f5385ebf | 7319 | h->needs_copy = 1; |
5bd4f169 AM |
7320 | } |
7321 | ||
529fe20e AM |
7322 | /* We no longer want dyn_relocs. */ |
7323 | ((struct ppc_link_hash_entry *) h)->dyn_relocs = NULL; | |
6cabe1ea | 7324 | return _bfd_elf_adjust_dynamic_copy (info, h, s); |
5bd4f169 AM |
7325 | } |
7326 | ||
e86ce104 AM |
7327 | /* If given a function descriptor symbol, hide both the function code |
7328 | sym and the descriptor. */ | |
7329 | static void | |
4ce794b7 AM |
7330 | ppc64_elf_hide_symbol (struct bfd_link_info *info, |
7331 | struct elf_link_hash_entry *h, | |
7332 | bfd_boolean force_local) | |
e86ce104 | 7333 | { |
34814b9f | 7334 | struct ppc_link_hash_entry *eh; |
e86ce104 AM |
7335 | _bfd_elf_link_hash_hide_symbol (info, h, force_local); |
7336 | ||
34814b9f AM |
7337 | eh = (struct ppc_link_hash_entry *) h; |
7338 | if (eh->is_func_descriptor) | |
e86ce104 | 7339 | { |
34814b9f | 7340 | struct ppc_link_hash_entry *fh = eh->oh; |
e86ce104 | 7341 | |
721956f4 | 7342 | if (fh == NULL) |
d1329ca3 AM |
7343 | { |
7344 | const char *p, *q; | |
b8ac2841 | 7345 | struct elf_link_hash_table *htab = elf_hash_table (info); |
d1329ca3 AM |
7346 | char save; |
7347 | ||
7348 | /* We aren't supposed to use alloca in BFD because on | |
7349 | systems which do not have alloca the version in libiberty | |
7350 | calls xmalloc, which might cause the program to crash | |
7351 | when it runs out of memory. This function doesn't have a | |
7352 | return status, so there's no way to gracefully return an | |
7353 | error. So cheat. We know that string[-1] can be safely | |
34814b9f AM |
7354 | accessed; It's either a string in an ELF string table, |
7355 | or allocated in an objalloc structure. */ | |
d1329ca3 | 7356 | |
34814b9f | 7357 | p = eh->elf.root.root.string - 1; |
d1329ca3 AM |
7358 | save = *p; |
7359 | *(char *) p = '.'; | |
34814b9f | 7360 | fh = (struct ppc_link_hash_entry *) |
b8ac2841 | 7361 | elf_link_hash_lookup (htab, p, FALSE, FALSE, FALSE); |
d1329ca3 AM |
7362 | *(char *) p = save; |
7363 | ||
7364 | /* Unfortunately, if it so happens that the string we were | |
7365 | looking for was allocated immediately before this string, | |
7366 | then we overwrote the string terminator. That's the only | |
7367 | reason the lookup should fail. */ | |
7368 | if (fh == NULL) | |
7369 | { | |
34814b9f AM |
7370 | q = eh->elf.root.root.string + strlen (eh->elf.root.root.string); |
7371 | while (q >= eh->elf.root.root.string && *q == *p) | |
d1329ca3 | 7372 | --q, --p; |
34814b9f AM |
7373 | if (q < eh->elf.root.root.string && *p == '.') |
7374 | fh = (struct ppc_link_hash_entry *) | |
b8ac2841 | 7375 | elf_link_hash_lookup (htab, p, FALSE, FALSE, FALSE); |
d1329ca3 AM |
7376 | } |
7377 | if (fh != NULL) | |
7378 | { | |
34814b9f AM |
7379 | eh->oh = fh; |
7380 | fh->oh = eh; | |
d1329ca3 AM |
7381 | } |
7382 | } | |
e86ce104 | 7383 | if (fh != NULL) |
34814b9f | 7384 | _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local); |
e86ce104 AM |
7385 | } |
7386 | } | |
7387 | ||
411e1bfb | 7388 | static bfd_boolean |
8843416a AM |
7389 | get_sym_h (struct elf_link_hash_entry **hp, |
7390 | Elf_Internal_Sym **symp, | |
7391 | asection **symsecp, | |
f961d9dd | 7392 | unsigned char **tls_maskp, |
8843416a AM |
7393 | Elf_Internal_Sym **locsymsp, |
7394 | unsigned long r_symndx, | |
7395 | bfd *ibfd) | |
411e1bfb | 7396 | { |
0ffa91dd | 7397 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd); |
411e1bfb AM |
7398 | |
7399 | if (r_symndx >= symtab_hdr->sh_info) | |
7400 | { | |
7401 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd); | |
7402 | struct elf_link_hash_entry *h; | |
7403 | ||
7404 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
b31867b6 | 7405 | h = elf_follow_link (h); |
411e1bfb AM |
7406 | |
7407 | if (hp != NULL) | |
7408 | *hp = h; | |
7409 | ||
7410 | if (symp != NULL) | |
7411 | *symp = NULL; | |
7412 | ||
7413 | if (symsecp != NULL) | |
7414 | { | |
7415 | asection *symsec = NULL; | |
7416 | if (h->root.type == bfd_link_hash_defined | |
7417 | || h->root.type == bfd_link_hash_defweak) | |
7418 | symsec = h->root.u.def.section; | |
7419 | *symsecp = symsec; | |
7420 | } | |
7421 | ||
e7b938ca | 7422 | if (tls_maskp != NULL) |
411e1bfb AM |
7423 | { |
7424 | struct ppc_link_hash_entry *eh; | |
7425 | ||
7426 | eh = (struct ppc_link_hash_entry *) h; | |
e7b938ca | 7427 | *tls_maskp = &eh->tls_mask; |
411e1bfb AM |
7428 | } |
7429 | } | |
7430 | else | |
7431 | { | |
7432 | Elf_Internal_Sym *sym; | |
7433 | Elf_Internal_Sym *locsyms = *locsymsp; | |
7434 | ||
7435 | if (locsyms == NULL) | |
7436 | { | |
7437 | locsyms = (Elf_Internal_Sym *) symtab_hdr->contents; | |
7438 | if (locsyms == NULL) | |
7439 | locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr, | |
7440 | symtab_hdr->sh_info, | |
7441 | 0, NULL, NULL, NULL); | |
7442 | if (locsyms == NULL) | |
7443 | return FALSE; | |
7444 | *locsymsp = locsyms; | |
7445 | } | |
7446 | sym = locsyms + r_symndx; | |
7447 | ||
7448 | if (hp != NULL) | |
7449 | *hp = NULL; | |
7450 | ||
7451 | if (symp != NULL) | |
7452 | *symp = sym; | |
7453 | ||
7454 | if (symsecp != NULL) | |
cb33740c | 7455 | *symsecp = bfd_section_from_elf_index (ibfd, sym->st_shndx); |
411e1bfb | 7456 | |
e7b938ca | 7457 | if (tls_maskp != NULL) |
411e1bfb AM |
7458 | { |
7459 | struct got_entry **lgot_ents; | |
f961d9dd | 7460 | unsigned char *tls_mask; |
411e1bfb | 7461 | |
e7b938ca | 7462 | tls_mask = NULL; |
411e1bfb AM |
7463 | lgot_ents = elf_local_got_ents (ibfd); |
7464 | if (lgot_ents != NULL) | |
7465 | { | |
e054468f AM |
7466 | struct plt_entry **local_plt = (struct plt_entry **) |
7467 | (lgot_ents + symtab_hdr->sh_info); | |
f961d9dd | 7468 | unsigned char *lgot_masks = (unsigned char *) |
e054468f | 7469 | (local_plt + symtab_hdr->sh_info); |
e7b938ca | 7470 | tls_mask = &lgot_masks[r_symndx]; |
411e1bfb | 7471 | } |
e7b938ca | 7472 | *tls_maskp = tls_mask; |
411e1bfb AM |
7473 | } |
7474 | } | |
7475 | return TRUE; | |
7476 | } | |
7477 | ||
e7b938ca | 7478 | /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on |
951fd09b | 7479 | error, 2 on a toc GD type suitable for optimization, 3 on a toc LD |
ad8e1ba5 | 7480 | type suitable for optimization, and 1 otherwise. */ |
951fd09b AM |
7481 | |
7482 | static int | |
f961d9dd | 7483 | get_tls_mask (unsigned char **tls_maskp, |
3a71aa26 AM |
7484 | unsigned long *toc_symndx, |
7485 | bfd_vma *toc_addend, | |
0d4792f7 | 7486 | Elf_Internal_Sym **locsymsp, |
3a71aa26 AM |
7487 | const Elf_Internal_Rela *rel, |
7488 | bfd *ibfd) | |
411e1bfb AM |
7489 | { |
7490 | unsigned long r_symndx; | |
0d4792f7 | 7491 | int next_r; |
411e1bfb AM |
7492 | struct elf_link_hash_entry *h; |
7493 | Elf_Internal_Sym *sym; | |
7494 | asection *sec; | |
7495 | bfd_vma off; | |
7496 | ||
7497 | r_symndx = ELF64_R_SYM (rel->r_info); | |
e7b938ca | 7498 | if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd)) |
951fd09b | 7499 | return 0; |
411e1bfb | 7500 | |
e7b938ca | 7501 | if ((*tls_maskp != NULL && **tls_maskp != 0) |
411e1bfb | 7502 | || sec == NULL |
6bee8834 | 7503 | || ppc64_elf_section_data (sec) == NULL |
7c8fe5c4 | 7504 | || ppc64_elf_section_data (sec)->sec_type != sec_toc) |
951fd09b | 7505 | return 1; |
411e1bfb AM |
7506 | |
7507 | /* Look inside a TOC section too. */ | |
7508 | if (h != NULL) | |
7509 | { | |
7510 | BFD_ASSERT (h->root.type == bfd_link_hash_defined); | |
7511 | off = h->root.u.def.value; | |
7512 | } | |
7513 | else | |
7514 | off = sym->st_value; | |
7515 | off += rel->r_addend; | |
7516 | BFD_ASSERT (off % 8 == 0); | |
3a71aa26 AM |
7517 | r_symndx = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8]; |
7518 | next_r = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8 + 1]; | |
0d4792f7 AM |
7519 | if (toc_symndx != NULL) |
7520 | *toc_symndx = r_symndx; | |
3a71aa26 AM |
7521 | if (toc_addend != NULL) |
7522 | *toc_addend = ppc64_elf_section_data (sec)->u.toc.add[off / 8]; | |
7523 | if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd)) | |
7524 | return 0; | |
854b41e7 | 7525 | if ((h == NULL || is_static_defined (h)) |
0d4792f7 AM |
7526 | && (next_r == -1 || next_r == -2)) |
7527 | return 1 - next_r; | |
951fd09b | 7528 | return 1; |
411e1bfb AM |
7529 | } |
7530 | ||
3b421ab3 AM |
7531 | /* Find (or create) an entry in the tocsave hash table. */ |
7532 | ||
7533 | static struct tocsave_entry * | |
7534 | tocsave_find (struct ppc_link_hash_table *htab, | |
7535 | enum insert_option insert, | |
7536 | Elf_Internal_Sym **local_syms, | |
7537 | const Elf_Internal_Rela *irela, | |
7538 | bfd *ibfd) | |
7539 | { | |
7540 | unsigned long r_indx; | |
7541 | struct elf_link_hash_entry *h; | |
7542 | Elf_Internal_Sym *sym; | |
7543 | struct tocsave_entry ent, *p; | |
7544 | hashval_t hash; | |
7545 | struct tocsave_entry **slot; | |
7546 | ||
7547 | r_indx = ELF64_R_SYM (irela->r_info); | |
7548 | if (!get_sym_h (&h, &sym, &ent.sec, NULL, local_syms, r_indx, ibfd)) | |
7549 | return NULL; | |
7550 | if (ent.sec == NULL || ent.sec->output_section == NULL) | |
7551 | { | |
4eca0228 | 7552 | _bfd_error_handler |
871b3ab2 | 7553 | (_("%pB: undefined symbol on R_PPC64_TOCSAVE relocation"), ibfd); |
3b421ab3 AM |
7554 | return NULL; |
7555 | } | |
7556 | ||
7557 | if (h != NULL) | |
7558 | ent.offset = h->root.u.def.value; | |
7559 | else | |
7560 | ent.offset = sym->st_value; | |
7561 | ent.offset += irela->r_addend; | |
7562 | ||
7563 | hash = tocsave_htab_hash (&ent); | |
7564 | slot = ((struct tocsave_entry **) | |
7565 | htab_find_slot_with_hash (htab->tocsave_htab, &ent, hash, insert)); | |
7566 | if (slot == NULL) | |
7567 | return NULL; | |
7568 | ||
7569 | if (*slot == NULL) | |
7570 | { | |
7571 | p = (struct tocsave_entry *) bfd_alloc (ibfd, sizeof (*p)); | |
7572 | if (p == NULL) | |
7573 | return NULL; | |
7574 | *p = ent; | |
7575 | *slot = p; | |
7576 | } | |
7577 | return *slot; | |
7578 | } | |
7579 | ||
754021d0 | 7580 | /* Adjust all global syms defined in opd sections. In gcc generated |
8387904d | 7581 | code for the old ABI, these will already have been done. */ |
754021d0 AM |
7582 | |
7583 | static bfd_boolean | |
7584 | adjust_opd_syms (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED) | |
7585 | { | |
7586 | struct ppc_link_hash_entry *eh; | |
7587 | asection *sym_sec; | |
74f0fb50 | 7588 | struct _opd_sec_data *opd; |
754021d0 AM |
7589 | |
7590 | if (h->root.type == bfd_link_hash_indirect) | |
7591 | return TRUE; | |
7592 | ||
754021d0 AM |
7593 | if (h->root.type != bfd_link_hash_defined |
7594 | && h->root.type != bfd_link_hash_defweak) | |
7595 | return TRUE; | |
7596 | ||
7597 | eh = (struct ppc_link_hash_entry *) h; | |
7598 | if (eh->adjust_done) | |
7599 | return TRUE; | |
7600 | ||
7601 | sym_sec = eh->elf.root.u.def.section; | |
74f0fb50 AM |
7602 | opd = get_opd_info (sym_sec); |
7603 | if (opd != NULL && opd->adjust != NULL) | |
754021d0 | 7604 | { |
51aecdc5 | 7605 | long adjust = opd->adjust[OPD_NDX (eh->elf.root.u.def.value)]; |
4025353c AM |
7606 | if (adjust == -1) |
7607 | { | |
7608 | /* This entry has been deleted. */ | |
b3fac117 | 7609 | asection *dsec = ppc64_elf_tdata (sym_sec->owner)->deleted_section; |
81688140 AM |
7610 | if (dsec == NULL) |
7611 | { | |
7612 | for (dsec = sym_sec->owner->sections; dsec; dsec = dsec->next) | |
dbaa2011 | 7613 | if (discarded_section (dsec)) |
81688140 | 7614 | { |
b3fac117 | 7615 | ppc64_elf_tdata (sym_sec->owner)->deleted_section = dsec; |
81688140 AM |
7616 | break; |
7617 | } | |
7618 | } | |
4025353c | 7619 | eh->elf.root.u.def.value = 0; |
81688140 | 7620 | eh->elf.root.u.def.section = dsec; |
4025353c AM |
7621 | } |
7622 | else | |
7623 | eh->elf.root.u.def.value += adjust; | |
754021d0 AM |
7624 | eh->adjust_done = 1; |
7625 | } | |
7626 | return TRUE; | |
7627 | } | |
7628 | ||
8c1d1bb8 | 7629 | /* Handles decrementing dynamic reloc counts for the reloc specified by |
19e08130 | 7630 | R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM |
8c1d1bb8 AM |
7631 | have already been determined. */ |
7632 | ||
7633 | static bfd_boolean | |
7634 | dec_dynrel_count (bfd_vma r_info, | |
7635 | asection *sec, | |
7636 | struct bfd_link_info *info, | |
7637 | Elf_Internal_Sym **local_syms, | |
7638 | struct elf_link_hash_entry *h, | |
19e08130 | 7639 | Elf_Internal_Sym *sym) |
8c1d1bb8 AM |
7640 | { |
7641 | enum elf_ppc64_reloc_type r_type; | |
19e08130 | 7642 | asection *sym_sec = NULL; |
8c1d1bb8 AM |
7643 | |
7644 | /* Can this reloc be dynamic? This switch, and later tests here | |
7645 | should be kept in sync with the code in check_relocs. */ | |
7646 | r_type = ELF64_R_TYPE (r_info); | |
7647 | switch (r_type) | |
7648 | { | |
7649 | default: | |
7650 | return TRUE; | |
7651 | ||
7652 | case R_PPC64_TPREL16: | |
7653 | case R_PPC64_TPREL16_LO: | |
7654 | case R_PPC64_TPREL16_HI: | |
7655 | case R_PPC64_TPREL16_HA: | |
7656 | case R_PPC64_TPREL16_DS: | |
7657 | case R_PPC64_TPREL16_LO_DS: | |
f9c6b907 AM |
7658 | case R_PPC64_TPREL16_HIGH: |
7659 | case R_PPC64_TPREL16_HIGHA: | |
8c1d1bb8 AM |
7660 | case R_PPC64_TPREL16_HIGHER: |
7661 | case R_PPC64_TPREL16_HIGHERA: | |
7662 | case R_PPC64_TPREL16_HIGHEST: | |
7663 | case R_PPC64_TPREL16_HIGHESTA: | |
8c1d1bb8 AM |
7664 | case R_PPC64_TPREL64: |
7665 | case R_PPC64_DTPMOD64: | |
7666 | case R_PPC64_DTPREL64: | |
7667 | case R_PPC64_ADDR64: | |
7668 | case R_PPC64_REL30: | |
7669 | case R_PPC64_REL32: | |
7670 | case R_PPC64_REL64: | |
7671 | case R_PPC64_ADDR14: | |
7672 | case R_PPC64_ADDR14_BRNTAKEN: | |
7673 | case R_PPC64_ADDR14_BRTAKEN: | |
7674 | case R_PPC64_ADDR16: | |
7675 | case R_PPC64_ADDR16_DS: | |
7676 | case R_PPC64_ADDR16_HA: | |
7677 | case R_PPC64_ADDR16_HI: | |
f9c6b907 AM |
7678 | case R_PPC64_ADDR16_HIGH: |
7679 | case R_PPC64_ADDR16_HIGHA: | |
8c1d1bb8 AM |
7680 | case R_PPC64_ADDR16_HIGHER: |
7681 | case R_PPC64_ADDR16_HIGHERA: | |
7682 | case R_PPC64_ADDR16_HIGHEST: | |
7683 | case R_PPC64_ADDR16_HIGHESTA: | |
7684 | case R_PPC64_ADDR16_LO: | |
7685 | case R_PPC64_ADDR16_LO_DS: | |
7686 | case R_PPC64_ADDR24: | |
7687 | case R_PPC64_ADDR32: | |
7688 | case R_PPC64_UADDR16: | |
7689 | case R_PPC64_UADDR32: | |
7690 | case R_PPC64_UADDR64: | |
7691 | case R_PPC64_TOC: | |
7692 | break; | |
7693 | } | |
7694 | ||
7695 | if (local_syms != NULL) | |
7696 | { | |
7697 | unsigned long r_symndx; | |
8c1d1bb8 AM |
7698 | bfd *ibfd = sec->owner; |
7699 | ||
7700 | r_symndx = ELF64_R_SYM (r_info); | |
7701 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, local_syms, r_symndx, ibfd)) | |
7702 | return FALSE; | |
7703 | } | |
7704 | ||
0e1862bb | 7705 | if ((bfd_link_pic (info) |
1d483afe | 7706 | && (must_be_dyn_reloc (info, r_type) |
8c1d1bb8 | 7707 | || (h != NULL |
198f1157 | 7708 | && (!SYMBOLIC_BIND (info, h) |
8c1d1bb8 AM |
7709 | || h->root.type == bfd_link_hash_defweak |
7710 | || !h->def_regular)))) | |
7711 | || (ELIMINATE_COPY_RELOCS | |
0e1862bb | 7712 | && !bfd_link_pic (info) |
8c1d1bb8 AM |
7713 | && h != NULL |
7714 | && (h->root.type == bfd_link_hash_defweak | |
7715 | || !h->def_regular))) | |
7716 | ; | |
7717 | else | |
7718 | return TRUE; | |
7719 | ||
7720 | if (h != NULL) | |
6edfbbad | 7721 | { |
19e08130 AM |
7722 | struct elf_dyn_relocs *p; |
7723 | struct elf_dyn_relocs **pp; | |
7724 | pp = &((struct ppc_link_hash_entry *) h)->dyn_relocs; | |
7725 | ||
7726 | /* elf_gc_sweep may have already removed all dyn relocs associated | |
7727 | with local syms for a given section. Also, symbol flags are | |
7728 | changed by elf_gc_sweep_symbol, confusing the test above. Don't | |
7729 | report a dynreloc miscount. */ | |
7730 | if (*pp == NULL && info->gc_sections) | |
7731 | return TRUE; | |
7732 | ||
7733 | while ((p = *pp) != NULL) | |
60124e18 | 7734 | { |
19e08130 AM |
7735 | if (p->sec == sec) |
7736 | { | |
7737 | if (!must_be_dyn_reloc (info, r_type)) | |
7738 | p->pc_count -= 1; | |
7739 | p->count -= 1; | |
7740 | if (p->count == 0) | |
7741 | *pp = p->next; | |
7742 | return TRUE; | |
7743 | } | |
7744 | pp = &p->next; | |
60124e18 | 7745 | } |
6edfbbad | 7746 | } |
19e08130 AM |
7747 | else |
7748 | { | |
7749 | struct ppc_dyn_relocs *p; | |
7750 | struct ppc_dyn_relocs **pp; | |
7751 | void *vpp; | |
7752 | bfd_boolean is_ifunc; | |
8c1d1bb8 | 7753 | |
19e08130 AM |
7754 | if (local_syms == NULL) |
7755 | sym_sec = bfd_section_from_elf_index (sec->owner, sym->st_shndx); | |
7756 | if (sym_sec == NULL) | |
7757 | sym_sec = sec; | |
c57da1a7 | 7758 | |
19e08130 AM |
7759 | vpp = &elf_section_data (sym_sec)->local_dynrel; |
7760 | pp = (struct ppc_dyn_relocs **) vpp; | |
7761 | ||
7762 | if (*pp == NULL && info->gc_sections) | |
7763 | return TRUE; | |
7764 | ||
7765 | is_ifunc = ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC; | |
7766 | while ((p = *pp) != NULL) | |
8c1d1bb8 | 7767 | { |
19e08130 AM |
7768 | if (p->sec == sec && p->ifunc == is_ifunc) |
7769 | { | |
7770 | p->count -= 1; | |
7771 | if (p->count == 0) | |
7772 | *pp = p->next; | |
7773 | return TRUE; | |
7774 | } | |
7775 | pp = &p->next; | |
8c1d1bb8 | 7776 | } |
8c1d1bb8 AM |
7777 | } |
7778 | ||
695344c0 | 7779 | /* xgettext:c-format */ |
cf97bcb0 AM |
7780 | _bfd_error_handler (_("dynreloc miscount for %pB, section %pA"), |
7781 | sec->owner, sec); | |
8c1d1bb8 AM |
7782 | bfd_set_error (bfd_error_bad_value); |
7783 | return FALSE; | |
7784 | } | |
7785 | ||
754021d0 AM |
7786 | /* Remove unused Official Procedure Descriptor entries. Currently we |
7787 | only remove those associated with functions in discarded link-once | |
7788 | sections, or weakly defined functions that have been overridden. It | |
7789 | would be possible to remove many more entries for statically linked | |
7790 | applications. */ | |
7791 | ||
b34976b6 | 7792 | bfd_boolean |
e7d1c40c | 7793 | ppc64_elf_edit_opd (struct bfd_link_info *info) |
1e2f5b6e AM |
7794 | { |
7795 | bfd *ibfd; | |
754021d0 | 7796 | bfd_boolean some_edited = FALSE; |
3f764659 | 7797 | asection *need_pad = NULL; |
e7d1c40c AM |
7798 | struct ppc_link_hash_table *htab; |
7799 | ||
7800 | htab = ppc_hash_table (info); | |
7801 | if (htab == NULL) | |
7802 | return FALSE; | |
1e2f5b6e | 7803 | |
c72f2fb2 | 7804 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
1e2f5b6e AM |
7805 | { |
7806 | asection *sec; | |
7807 | Elf_Internal_Rela *relstart, *rel, *relend; | |
7808 | Elf_Internal_Shdr *symtab_hdr; | |
6cdc0ccc | 7809 | Elf_Internal_Sym *local_syms; |
74f0fb50 | 7810 | struct _opd_sec_data *opd; |
51aecdc5 | 7811 | bfd_boolean need_edit, add_aux_fields, broken; |
3f764659 | 7812 | bfd_size_type cnt_16b = 0; |
1e2f5b6e | 7813 | |
854b41e7 AM |
7814 | if (!is_ppc64_elf (ibfd)) |
7815 | continue; | |
7816 | ||
1e2f5b6e | 7817 | sec = bfd_get_section_by_name (ibfd, ".opd"); |
46de2a7c | 7818 | if (sec == NULL || sec->size == 0) |
1e2f5b6e AM |
7819 | continue; |
7820 | ||
dbaa2011 | 7821 | if (sec->sec_info_type == SEC_INFO_TYPE_JUST_SYMS) |
4b85d634 AM |
7822 | continue; |
7823 | ||
1e2f5b6e AM |
7824 | if (sec->output_section == bfd_abs_section_ptr) |
7825 | continue; | |
7826 | ||
7827 | /* Look through the section relocs. */ | |
7828 | if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0) | |
7829 | continue; | |
7830 | ||
6cdc0ccc | 7831 | local_syms = NULL; |
0ffa91dd | 7832 | symtab_hdr = &elf_symtab_hdr (ibfd); |
1e2f5b6e AM |
7833 | |
7834 | /* Read the relocations. */ | |
4ce794b7 | 7835 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, |
45d6a902 | 7836 | info->keep_memory); |
1e2f5b6e | 7837 | if (relstart == NULL) |
b34976b6 | 7838 | return FALSE; |
1e2f5b6e AM |
7839 | |
7840 | /* First run through the relocs to check they are sane, and to | |
7841 | determine whether we need to edit this opd section. */ | |
b34976b6 | 7842 | need_edit = FALSE; |
51aecdc5 | 7843 | broken = FALSE; |
3f764659 | 7844 | need_pad = sec; |
1e2f5b6e | 7845 | relend = relstart + sec->reloc_count; |
50bc7936 | 7846 | for (rel = relstart; rel < relend; ) |
1e2f5b6e | 7847 | { |
04c9666a | 7848 | enum elf_ppc64_reloc_type r_type; |
1e2f5b6e AM |
7849 | unsigned long r_symndx; |
7850 | asection *sym_sec; | |
7851 | struct elf_link_hash_entry *h; | |
7852 | Elf_Internal_Sym *sym; | |
51aecdc5 | 7853 | bfd_vma offset; |
1e2f5b6e | 7854 | |
51aecdc5 | 7855 | /* .opd contains an array of 16 or 24 byte entries. We're |
1e2f5b6e AM |
7856 | only interested in the reloc pointing to a function entry |
7857 | point. */ | |
51aecdc5 AM |
7858 | offset = rel->r_offset; |
7859 | if (rel + 1 == relend | |
7860 | || rel[1].r_offset != offset + 8) | |
1e2f5b6e AM |
7861 | { |
7862 | /* If someone messes with .opd alignment then after a | |
7863 | "ld -r" we might have padding in the middle of .opd. | |
7864 | Also, there's nothing to prevent someone putting | |
7865 | something silly in .opd with the assembler. No .opd | |
b34976b6 | 7866 | optimization for them! */ |
3f764659 | 7867 | broken_opd: |
4eca0228 | 7868 | _bfd_error_handler |
871b3ab2 | 7869 | (_("%pB: .opd is not a regular array of opd entries"), ibfd); |
51aecdc5 | 7870 | broken = TRUE; |
1e2f5b6e AM |
7871 | break; |
7872 | } | |
7873 | ||
50bc7936 AM |
7874 | if ((r_type = ELF64_R_TYPE (rel->r_info)) != R_PPC64_ADDR64 |
7875 | || (r_type = ELF64_R_TYPE ((rel + 1)->r_info)) != R_PPC64_TOC) | |
7876 | { | |
4eca0228 | 7877 | _bfd_error_handler |
695344c0 | 7878 | /* xgettext:c-format */ |
871b3ab2 | 7879 | (_("%pB: unexpected reloc type %u in .opd section"), |
d003868e | 7880 | ibfd, r_type); |
51aecdc5 | 7881 | broken = TRUE; |
50bc7936 AM |
7882 | break; |
7883 | } | |
7884 | ||
1e2f5b6e | 7885 | r_symndx = ELF64_R_SYM (rel->r_info); |
411e1bfb AM |
7886 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, |
7887 | r_symndx, ibfd)) | |
50bc7936 | 7888 | goto error_ret; |
1e2f5b6e AM |
7889 | |
7890 | if (sym_sec == NULL || sym_sec->owner == NULL) | |
7891 | { | |
411e1bfb AM |
7892 | const char *sym_name; |
7893 | if (h != NULL) | |
7894 | sym_name = h->root.root.string; | |
7895 | else | |
26c61ae5 L |
7896 | sym_name = bfd_elf_sym_name (ibfd, symtab_hdr, sym, |
7897 | sym_sec); | |
411e1bfb | 7898 | |
4eca0228 | 7899 | _bfd_error_handler |
695344c0 | 7900 | /* xgettext:c-format */ |
871b3ab2 | 7901 | (_("%pB: undefined sym `%s' in .opd section"), |
d003868e | 7902 | ibfd, sym_name); |
51aecdc5 | 7903 | broken = TRUE; |
1e2f5b6e AM |
7904 | break; |
7905 | } | |
7906 | ||
51020317 AM |
7907 | /* opd entries are always for functions defined in the |
7908 | current input bfd. If the symbol isn't defined in the | |
7909 | input bfd, then we won't be using the function in this | |
7910 | bfd; It must be defined in a linkonce section in another | |
7911 | bfd, or is weak. It's also possible that we are | |
7912 | discarding the function due to a linker script /DISCARD/, | |
7913 | which we test for via the output_section. */ | |
7914 | if (sym_sec->owner != ibfd | |
7915 | || sym_sec->output_section == bfd_abs_section_ptr) | |
b34976b6 | 7916 | need_edit = TRUE; |
1e2f5b6e | 7917 | |
50bc7936 | 7918 | rel += 2; |
51aecdc5 AM |
7919 | if (rel + 1 == relend |
7920 | || (rel + 2 < relend | |
7921 | && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_TOC)) | |
7922 | ++rel; | |
7923 | ||
7924 | if (rel == relend) | |
3f764659 JJ |
7925 | { |
7926 | if (sec->size == offset + 24) | |
7927 | { | |
7928 | need_pad = NULL; | |
7929 | break; | |
7930 | } | |
51aecdc5 | 7931 | if (sec->size == offset + 16) |
3f764659 JJ |
7932 | { |
7933 | cnt_16b++; | |
7934 | break; | |
7935 | } | |
7936 | goto broken_opd; | |
7937 | } | |
3f764659 JJ |
7938 | else if (rel + 1 < relend |
7939 | && ELF64_R_TYPE (rel[0].r_info) == R_PPC64_ADDR64 | |
7940 | && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOC) | |
7941 | { | |
51aecdc5 AM |
7942 | if (rel[0].r_offset == offset + 16) |
7943 | cnt_16b++; | |
7944 | else if (rel[0].r_offset != offset + 24) | |
7945 | goto broken_opd; | |
3f764659 JJ |
7946 | } |
7947 | else | |
7948 | goto broken_opd; | |
1e2f5b6e AM |
7949 | } |
7950 | ||
e7d1c40c | 7951 | add_aux_fields = htab->params->non_overlapping_opd && cnt_16b > 0; |
3f764659 | 7952 | |
51aecdc5 | 7953 | if (!broken && (need_edit || add_aux_fields)) |
1e2f5b6e AM |
7954 | { |
7955 | Elf_Internal_Rela *write_rel; | |
d4730f92 | 7956 | Elf_Internal_Shdr *rel_hdr; |
1e2f5b6e | 7957 | bfd_byte *rptr, *wptr; |
983bddc8 | 7958 | bfd_byte *new_contents; |
74f0fb50 AM |
7959 | bfd_size_type amt; |
7960 | ||
983bddc8 | 7961 | new_contents = NULL; |
51aecdc5 | 7962 | amt = OPD_NDX (sec->size) * sizeof (long); |
74f0fb50 | 7963 | opd = &ppc64_elf_section_data (sec)->u.opd; |
33c0ec9d | 7964 | opd->adjust = bfd_zalloc (sec->owner, amt); |
74f0fb50 AM |
7965 | if (opd->adjust == NULL) |
7966 | return FALSE; | |
1e2f5b6e AM |
7967 | |
7968 | /* This seems a waste of time as input .opd sections are all | |
7969 | zeros as generated by gcc, but I suppose there's no reason | |
7970 | this will always be so. We might start putting something in | |
7971 | the third word of .opd entries. */ | |
7972 | if ((sec->flags & SEC_IN_MEMORY) == 0) | |
7973 | { | |
eea6121a AM |
7974 | bfd_byte *loc; |
7975 | if (!bfd_malloc_and_get_section (ibfd, sec, &loc)) | |
6cdc0ccc | 7976 | { |
eea6121a AM |
7977 | if (loc != NULL) |
7978 | free (loc); | |
50bc7936 | 7979 | error_ret: |
6cdc0ccc AM |
7980 | if (local_syms != NULL |
7981 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
7982 | free (local_syms); | |
6cdc0ccc AM |
7983 | if (elf_section_data (sec)->relocs != relstart) |
7984 | free (relstart); | |
b34976b6 | 7985 | return FALSE; |
6cdc0ccc | 7986 | } |
1e2f5b6e AM |
7987 | sec->contents = loc; |
7988 | sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS); | |
7989 | } | |
7990 | ||
7991 | elf_section_data (sec)->relocs = relstart; | |
7992 | ||
3f764659 | 7993 | new_contents = sec->contents; |
3f764659 JJ |
7994 | if (add_aux_fields) |
7995 | { | |
7996 | new_contents = bfd_malloc (sec->size + cnt_16b * 8); | |
7997 | if (new_contents == NULL) | |
7998 | return FALSE; | |
51aecdc5 | 7999 | need_pad = NULL; |
3f764659 | 8000 | } |
b4f4e59f AM |
8001 | wptr = new_contents; |
8002 | rptr = sec->contents; | |
1e2f5b6e | 8003 | write_rel = relstart; |
51aecdc5 | 8004 | for (rel = relstart; rel < relend; ) |
1e2f5b6e | 8005 | { |
50bc7936 AM |
8006 | unsigned long r_symndx; |
8007 | asection *sym_sec; | |
8008 | struct elf_link_hash_entry *h; | |
51aecdc5 | 8009 | struct ppc_link_hash_entry *fdh = NULL; |
50bc7936 | 8010 | Elf_Internal_Sym *sym; |
51aecdc5 AM |
8011 | long opd_ent_size; |
8012 | Elf_Internal_Rela *next_rel; | |
8013 | bfd_boolean skip; | |
50bc7936 AM |
8014 | |
8015 | r_symndx = ELF64_R_SYM (rel->r_info); | |
8016 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
d37c89e5 | 8017 | r_symndx, ibfd)) |
50bc7936 AM |
8018 | goto error_ret; |
8019 | ||
51aecdc5 AM |
8020 | next_rel = rel + 2; |
8021 | if (next_rel + 1 == relend | |
8022 | || (next_rel + 2 < relend | |
8023 | && ELF64_R_TYPE (next_rel[2].r_info) == R_PPC64_TOC)) | |
8024 | ++next_rel; | |
8025 | ||
8026 | /* See if the .opd entry is full 24 byte or | |
8027 | 16 byte (with fd_aux entry overlapped with next | |
8028 | fd_func). */ | |
8029 | opd_ent_size = 24; | |
8030 | if (next_rel == relend) | |
1e2f5b6e | 8031 | { |
51aecdc5 | 8032 | if (sec->size == rel->r_offset + 16) |
3f764659 | 8033 | opd_ent_size = 16; |
51aecdc5 AM |
8034 | } |
8035 | else if (next_rel->r_offset == rel->r_offset + 16) | |
8036 | opd_ent_size = 16; | |
3f764659 | 8037 | |
51aecdc5 AM |
8038 | if (h != NULL |
8039 | && h->root.root.string[0] == '.') | |
8040 | { | |
8c5b4e52 AM |
8041 | fdh = ((struct ppc_link_hash_entry *) h)->oh; |
8042 | if (fdh != NULL) | |
8043 | { | |
8044 | fdh = ppc_follow_link (fdh); | |
8045 | if (fdh->elf.root.type != bfd_link_hash_defined | |
8046 | && fdh->elf.root.type != bfd_link_hash_defweak) | |
8047 | fdh = NULL; | |
8048 | } | |
51aecdc5 | 8049 | } |
1e2f5b6e | 8050 | |
51aecdc5 AM |
8051 | skip = (sym_sec->owner != ibfd |
8052 | || sym_sec->output_section == bfd_abs_section_ptr); | |
8053 | if (skip) | |
8054 | { | |
8055 | if (fdh != NULL && sym_sec->owner == ibfd) | |
a4aa0fb7 | 8056 | { |
51aecdc5 AM |
8057 | /* Arrange for the function descriptor sym |
8058 | to be dropped. */ | |
8059 | fdh->elf.root.u.def.value = 0; | |
8060 | fdh->elf.root.u.def.section = sym_sec; | |
a4aa0fb7 | 8061 | } |
51aecdc5 | 8062 | opd->adjust[OPD_NDX (rel->r_offset)] = -1; |
1e2f5b6e | 8063 | |
0e1862bb | 8064 | if (NO_OPD_RELOCS || bfd_link_relocatable (info)) |
51aecdc5 AM |
8065 | rel = next_rel; |
8066 | else | |
8067 | while (1) | |
8068 | { | |
8069 | if (!dec_dynrel_count (rel->r_info, sec, info, | |
8070 | NULL, h, sym)) | |
8071 | goto error_ret; | |
754021d0 | 8072 | |
51aecdc5 AM |
8073 | if (++rel == next_rel) |
8074 | break; | |
1e2f5b6e | 8075 | |
51aecdc5 AM |
8076 | r_symndx = ELF64_R_SYM (rel->r_info); |
8077 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
8078 | r_symndx, ibfd)) | |
8079 | goto error_ret; | |
8080 | } | |
50bc7936 AM |
8081 | } |
8082 | else | |
1e2f5b6e | 8083 | { |
51aecdc5 AM |
8084 | /* We'll be keeping this opd entry. */ |
8085 | long adjust; | |
8086 | ||
8087 | if (fdh != NULL) | |
8088 | { | |
8089 | /* Redefine the function descriptor symbol to | |
8090 | this location in the opd section. It is | |
8091 | necessary to update the value here rather | |
8092 | than using an array of adjustments as we do | |
8093 | for local symbols, because various places | |
8094 | in the generic ELF code use the value | |
8095 | stored in u.def.value. */ | |
8096 | fdh->elf.root.u.def.value = wptr - new_contents; | |
8097 | fdh->adjust_done = 1; | |
8098 | } | |
8099 | ||
8100 | /* Local syms are a bit tricky. We could | |
8101 | tweak them as they can be cached, but | |
8102 | we'd need to look through the local syms | |
8103 | for the function descriptor sym which we | |
8104 | don't have at the moment. So keep an | |
8105 | array of adjustments. */ | |
8106 | adjust = (wptr - new_contents) - (rptr - sec->contents); | |
8107 | opd->adjust[OPD_NDX (rel->r_offset)] = adjust; | |
8108 | ||
8109 | if (wptr != rptr) | |
8110 | memcpy (wptr, rptr, opd_ent_size); | |
8111 | wptr += opd_ent_size; | |
8112 | if (add_aux_fields && opd_ent_size == 16) | |
8113 | { | |
8114 | memset (wptr, '\0', 8); | |
8115 | wptr += 8; | |
8116 | } | |
8117 | ||
50bc7936 | 8118 | /* We need to adjust any reloc offsets to point to the |
51aecdc5 AM |
8119 | new opd entries. */ |
8120 | for ( ; rel != next_rel; ++rel) | |
8121 | { | |
8122 | rel->r_offset += adjust; | |
8123 | if (write_rel != rel) | |
8124 | memcpy (write_rel, rel, sizeof (*rel)); | |
8125 | ++write_rel; | |
8126 | } | |
1e2f5b6e | 8127 | } |
51aecdc5 AM |
8128 | |
8129 | rptr += opd_ent_size; | |
1e2f5b6e AM |
8130 | } |
8131 | ||
3f764659 | 8132 | sec->size = wptr - new_contents; |
1e2f5b6e | 8133 | sec->reloc_count = write_rel - relstart; |
3f764659 JJ |
8134 | if (add_aux_fields) |
8135 | { | |
8136 | free (sec->contents); | |
8137 | sec->contents = new_contents; | |
8138 | } | |
8139 | ||
05bf9422 | 8140 | /* Fudge the header size too, as this is used later in |
cdcf6e38 | 8141 | elf_bfd_final_link if we are emitting relocs. */ |
d4730f92 BS |
8142 | rel_hdr = _bfd_elf_single_rel_hdr (sec); |
8143 | rel_hdr->sh_size = sec->reloc_count * rel_hdr->sh_entsize; | |
754021d0 | 8144 | some_edited = TRUE; |
1e2f5b6e | 8145 | } |
6cdc0ccc | 8146 | else if (elf_section_data (sec)->relocs != relstart) |
1e2f5b6e | 8147 | free (relstart); |
6cdc0ccc | 8148 | |
411e1bfb AM |
8149 | if (local_syms != NULL |
8150 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
8151 | { | |
8152 | if (!info->keep_memory) | |
8153 | free (local_syms); | |
8154 | else | |
8155 | symtab_hdr->contents = (unsigned char *) local_syms; | |
8156 | } | |
8157 | } | |
8158 | ||
754021d0 AM |
8159 | if (some_edited) |
8160 | elf_link_hash_traverse (elf_hash_table (info), adjust_opd_syms, NULL); | |
8161 | ||
3f764659 JJ |
8162 | /* If we are doing a final link and the last .opd entry is just 16 byte |
8163 | long, add a 8 byte padding after it. */ | |
0e1862bb | 8164 | if (need_pad != NULL && !bfd_link_relocatable (info)) |
3f764659 JJ |
8165 | { |
8166 | bfd_byte *p; | |
8167 | ||
8168 | if ((need_pad->flags & SEC_IN_MEMORY) == 0) | |
8169 | { | |
8170 | BFD_ASSERT (need_pad->size > 0); | |
8171 | ||
8172 | p = bfd_malloc (need_pad->size + 8); | |
8173 | if (p == NULL) | |
8174 | return FALSE; | |
699733f6 | 8175 | |
3f764659 JJ |
8176 | if (! bfd_get_section_contents (need_pad->owner, need_pad, |
8177 | p, 0, need_pad->size)) | |
8178 | return FALSE; | |
8179 | ||
8180 | need_pad->contents = p; | |
8181 | need_pad->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS); | |
8182 | } | |
8183 | else | |
8184 | { | |
8185 | p = bfd_realloc (need_pad->contents, need_pad->size + 8); | |
8186 | if (p == NULL) | |
8187 | return FALSE; | |
8188 | ||
8189 | need_pad->contents = p; | |
8190 | } | |
8191 | ||
8192 | memset (need_pad->contents + need_pad->size, 0, 8); | |
8193 | need_pad->size += 8; | |
8194 | } | |
8195 | ||
411e1bfb AM |
8196 | return TRUE; |
8197 | } | |
8198 | ||
e1918d23 | 8199 | /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */ |
411e1bfb | 8200 | |
e1918d23 | 8201 | asection * |
e7d1c40c | 8202 | ppc64_elf_tls_setup (struct bfd_link_info *info) |
411e1bfb | 8203 | { |
411e1bfb AM |
8204 | struct ppc_link_hash_table *htab; |
8205 | ||
411e1bfb | 8206 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
8207 | if (htab == NULL) |
8208 | return NULL; | |
8209 | ||
ee67d69a AM |
8210 | if (abiversion (info->output_bfd) == 1) |
8211 | htab->opd_abi = 1; | |
8212 | ||
e7d1c40c | 8213 | if (htab->params->no_multi_toc) |
33c0ec9d AM |
8214 | htab->do_multi_toc = 0; |
8215 | else if (!htab->do_multi_toc) | |
e7d1c40c | 8216 | htab->params->no_multi_toc = 1; |
33c0ec9d | 8217 | |
8b5f1ed8 AM |
8218 | /* Default to --no-plt-localentry, as this option can cause problems |
8219 | with symbol interposition. For example, glibc libpthread.so and | |
8220 | libc.so duplicate many pthread symbols, with a fallback | |
8221 | implementation in libc.so. In some cases the fallback does more | |
8222 | work than the pthread implementation. __pthread_condattr_destroy | |
8223 | is one such symbol: the libpthread.so implementation is | |
8224 | localentry:0 while the libc.so implementation is localentry:8. | |
8225 | An app that "cleverly" uses dlopen to only load necessary | |
8226 | libraries at runtime may omit loading libpthread.so when not | |
8227 | running multi-threaded, which then results in the libc.so | |
8228 | fallback symbols being used and ld.so complaining. Now there | |
8229 | are workarounds in ld (see non_zero_localentry) to detect the | |
8230 | pthread situation, but that may not be the only case where | |
8231 | --plt-localentry can cause trouble. */ | |
f378ab09 | 8232 | if (htab->params->plt_localentry0 < 0) |
8b5f1ed8 | 8233 | htab->params->plt_localentry0 = 0; |
d44c746a AM |
8234 | if (htab->params->plt_localentry0 |
8235 | && elf_link_hash_lookup (&htab->elf, "GLIBC_2.26", | |
8236 | FALSE, FALSE, FALSE) == NULL) | |
cf97bcb0 AM |
8237 | _bfd_error_handler |
8238 | (_("warning: --plt-localentry is especially dangerous without " | |
8239 | "ld.so support to detect ABI violations")); | |
f378ab09 | 8240 | |
3a71aa26 AM |
8241 | htab->tls_get_addr = ((struct ppc_link_hash_entry *) |
8242 | elf_link_hash_lookup (&htab->elf, ".__tls_get_addr", | |
8243 | FALSE, FALSE, TRUE)); | |
a7f2871e AM |
8244 | /* Move dynamic linking info to the function descriptor sym. */ |
8245 | if (htab->tls_get_addr != NULL) | |
8246 | func_desc_adjust (&htab->tls_get_addr->elf, info); | |
3a71aa26 AM |
8247 | htab->tls_get_addr_fd = ((struct ppc_link_hash_entry *) |
8248 | elf_link_hash_lookup (&htab->elf, "__tls_get_addr", | |
8249 | FALSE, FALSE, TRUE)); | |
7c9cf415 | 8250 | if (htab->params->tls_get_addr_opt) |
a7f2871e AM |
8251 | { |
8252 | struct elf_link_hash_entry *opt, *opt_fd, *tga, *tga_fd; | |
8253 | ||
8254 | opt = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr_opt", | |
8255 | FALSE, FALSE, TRUE); | |
8256 | if (opt != NULL) | |
8257 | func_desc_adjust (opt, info); | |
8258 | opt_fd = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt", | |
8259 | FALSE, FALSE, TRUE); | |
8260 | if (opt_fd != NULL | |
8261 | && (opt_fd->root.type == bfd_link_hash_defined | |
8262 | || opt_fd->root.type == bfd_link_hash_defweak)) | |
8263 | { | |
8264 | /* If glibc supports an optimized __tls_get_addr call stub, | |
8265 | signalled by the presence of __tls_get_addr_opt, and we'll | |
8266 | be calling __tls_get_addr via a plt call stub, then | |
8267 | make __tls_get_addr point to __tls_get_addr_opt. */ | |
8268 | tga_fd = &htab->tls_get_addr_fd->elf; | |
8269 | if (htab->elf.dynamic_sections_created | |
8270 | && tga_fd != NULL | |
8271 | && (tga_fd->type == STT_FUNC | |
8272 | || tga_fd->needs_plt) | |
8273 | && !(SYMBOL_CALLS_LOCAL (info, tga_fd) | |
21d68fcd | 8274 | || UNDEFWEAK_NO_DYNAMIC_RELOC (info, tga_fd))) |
a7f2871e AM |
8275 | { |
8276 | struct plt_entry *ent; | |
8277 | ||
8278 | for (ent = tga_fd->plt.plist; ent != NULL; ent = ent->next) | |
8279 | if (ent->plt.refcount > 0) | |
8280 | break; | |
8281 | if (ent != NULL) | |
8282 | { | |
8283 | tga_fd->root.type = bfd_link_hash_indirect; | |
8284 | tga_fd->root.u.i.link = &opt_fd->root; | |
8285 | ppc64_elf_copy_indirect_symbol (info, opt_fd, tga_fd); | |
b531344c | 8286 | opt_fd->mark = 1; |
a7f2871e AM |
8287 | if (opt_fd->dynindx != -1) |
8288 | { | |
8289 | /* Use __tls_get_addr_opt in dynamic relocations. */ | |
8290 | opt_fd->dynindx = -1; | |
8291 | _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr, | |
8292 | opt_fd->dynstr_index); | |
8293 | if (!bfd_elf_link_record_dynamic_symbol (info, opt_fd)) | |
854b41e7 | 8294 | return NULL; |
a7f2871e AM |
8295 | } |
8296 | htab->tls_get_addr_fd = (struct ppc_link_hash_entry *) opt_fd; | |
8297 | tga = &htab->tls_get_addr->elf; | |
8298 | if (opt != NULL && tga != NULL) | |
8299 | { | |
8300 | tga->root.type = bfd_link_hash_indirect; | |
8301 | tga->root.u.i.link = &opt->root; | |
8302 | ppc64_elf_copy_indirect_symbol (info, opt, tga); | |
b531344c | 8303 | opt->mark = 1; |
a7f2871e AM |
8304 | _bfd_elf_link_hash_hide_symbol (info, opt, |
8305 | tga->forced_local); | |
8306 | htab->tls_get_addr = (struct ppc_link_hash_entry *) opt; | |
8307 | } | |
8308 | htab->tls_get_addr_fd->oh = htab->tls_get_addr; | |
8309 | htab->tls_get_addr_fd->is_func_descriptor = 1; | |
8310 | if (htab->tls_get_addr != NULL) | |
8311 | { | |
8312 | htab->tls_get_addr->oh = htab->tls_get_addr_fd; | |
8313 | htab->tls_get_addr->is_func = 1; | |
8314 | } | |
8315 | } | |
8316 | } | |
8317 | } | |
7c9cf415 AM |
8318 | else if (htab->params->tls_get_addr_opt < 0) |
8319 | htab->params->tls_get_addr_opt = 0; | |
a7f2871e | 8320 | } |
33c0ec9d | 8321 | return _bfd_elf_tls_setup (info->output_bfd, info); |
3a71aa26 | 8322 | } |
8387904d | 8323 | |
3a71aa26 AM |
8324 | /* Return TRUE iff REL is a branch reloc with a global symbol matching |
8325 | HASH1 or HASH2. */ | |
8387904d | 8326 | |
3a71aa26 AM |
8327 | static bfd_boolean |
8328 | branch_reloc_hash_match (const bfd *ibfd, | |
8329 | const Elf_Internal_Rela *rel, | |
8330 | const struct ppc_link_hash_entry *hash1, | |
8331 | const struct ppc_link_hash_entry *hash2) | |
8332 | { | |
8333 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd); | |
8334 | enum elf_ppc64_reloc_type r_type = ELF64_R_TYPE (rel->r_info); | |
8335 | unsigned int r_symndx = ELF64_R_SYM (rel->r_info); | |
8336 | ||
e054468f | 8337 | if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type)) |
8387904d | 8338 | { |
3a71aa26 AM |
8339 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd); |
8340 | struct elf_link_hash_entry *h; | |
8387904d | 8341 | |
3a71aa26 | 8342 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; |
b31867b6 | 8343 | h = elf_follow_link (h); |
3a71aa26 AM |
8344 | if (h == &hash1->elf || h == &hash2->elf) |
8345 | return TRUE; | |
a48ebf4d | 8346 | } |
3a71aa26 | 8347 | return FALSE; |
951fd09b | 8348 | } |
411e1bfb | 8349 | |
951fd09b AM |
8350 | /* Run through all the TLS relocs looking for optimization |
8351 | opportunities. The linker has been hacked (see ppc64elf.em) to do | |
8352 | a preliminary section layout so that we know the TLS segment | |
8353 | offsets. We can't optimize earlier because some optimizations need | |
8354 | to know the tp offset, and we need to optimize before allocating | |
8355 | dynamic relocations. */ | |
8356 | ||
8357 | bfd_boolean | |
33c0ec9d | 8358 | ppc64_elf_tls_optimize (struct bfd_link_info *info) |
951fd09b AM |
8359 | { |
8360 | bfd *ibfd; | |
8361 | asection *sec; | |
8362 | struct ppc_link_hash_table *htab; | |
663a1470 | 8363 | unsigned char *toc_ref; |
102890f0 | 8364 | int pass; |
951fd09b | 8365 | |
3cbc1e5e | 8366 | if (!bfd_link_executable (info)) |
411e1bfb AM |
8367 | return TRUE; |
8368 | ||
951fd09b | 8369 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
8370 | if (htab == NULL) |
8371 | return FALSE; | |
8372 | ||
663a1470 AM |
8373 | /* Make two passes over the relocs. On the first pass, mark toc |
8374 | entries involved with tls relocs, and check that tls relocs | |
8375 | involved in setting up a tls_get_addr call are indeed followed by | |
8376 | such a call. If they are not, we can't do any tls optimization. | |
8377 | On the second pass twiddle tls_mask flags to notify | |
8378 | relocate_section that optimization can be done, and adjust got | |
8379 | and plt refcounts. */ | |
8380 | toc_ref = NULL; | |
8381 | for (pass = 0; pass < 2; ++pass) | |
c72f2fb2 | 8382 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
663a1470 AM |
8383 | { |
8384 | Elf_Internal_Sym *locsyms = NULL; | |
8385 | asection *toc = bfd_get_section_by_name (ibfd, ".toc"); | |
8386 | ||
102890f0 AM |
8387 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) |
8388 | if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section)) | |
8389 | { | |
8390 | Elf_Internal_Rela *relstart, *rel, *relend; | |
663a1470 | 8391 | bfd_boolean found_tls_get_addr_arg = 0; |
411e1bfb | 8392 | |
102890f0 AM |
8393 | /* Read the relocations. */ |
8394 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, | |
8395 | info->keep_memory); | |
8396 | if (relstart == NULL) | |
2915c55b JK |
8397 | { |
8398 | free (toc_ref); | |
8399 | return FALSE; | |
8400 | } | |
411e1bfb | 8401 | |
102890f0 AM |
8402 | relend = relstart + sec->reloc_count; |
8403 | for (rel = relstart; rel < relend; rel++) | |
8404 | { | |
8405 | enum elf_ppc64_reloc_type r_type; | |
8406 | unsigned long r_symndx; | |
8407 | struct elf_link_hash_entry *h; | |
8408 | Elf_Internal_Sym *sym; | |
8409 | asection *sym_sec; | |
f961d9dd AM |
8410 | unsigned char *tls_mask; |
8411 | unsigned char tls_set, tls_clear, tls_type = 0; | |
102890f0 AM |
8412 | bfd_vma value; |
8413 | bfd_boolean ok_tprel, is_local; | |
8414 | long toc_ref_index = 0; | |
8415 | int expecting_tls_get_addr = 0; | |
663a1470 | 8416 | bfd_boolean ret = FALSE; |
411e1bfb | 8417 | |
102890f0 AM |
8418 | r_symndx = ELF64_R_SYM (rel->r_info); |
8419 | if (!get_sym_h (&h, &sym, &sym_sec, &tls_mask, &locsyms, | |
8420 | r_symndx, ibfd)) | |
8421 | { | |
8422 | err_free_rel: | |
8423 | if (elf_section_data (sec)->relocs != relstart) | |
8424 | free (relstart); | |
8425 | if (toc_ref != NULL) | |
8426 | free (toc_ref); | |
8427 | if (locsyms != NULL | |
0ffa91dd | 8428 | && (elf_symtab_hdr (ibfd).contents |
102890f0 AM |
8429 | != (unsigned char *) locsyms)) |
8430 | free (locsyms); | |
663a1470 | 8431 | return ret; |
102890f0 | 8432 | } |
411e1bfb | 8433 | |
102890f0 AM |
8434 | if (h != NULL) |
8435 | { | |
766bc656 AM |
8436 | if (h->root.type == bfd_link_hash_defined |
8437 | || h->root.type == bfd_link_hash_defweak) | |
8438 | value = h->root.u.def.value; | |
8439 | else if (h->root.type == bfd_link_hash_undefweak) | |
8440 | value = 0; | |
8441 | else | |
663a1470 AM |
8442 | { |
8443 | found_tls_get_addr_arg = 0; | |
8444 | continue; | |
8445 | } | |
102890f0 AM |
8446 | } |
8447 | else | |
8448 | /* Symbols referenced by TLS relocs must be of type | |
8449 | STT_TLS. So no need for .opd local sym adjust. */ | |
8450 | value = sym->st_value; | |
8451 | ||
8452 | ok_tprel = FALSE; | |
8453 | is_local = FALSE; | |
8454 | if (h == NULL | |
8455 | || !h->def_dynamic) | |
8456 | { | |
8457 | is_local = TRUE; | |
766bc656 AM |
8458 | if (h != NULL |
8459 | && h->root.type == bfd_link_hash_undefweak) | |
8460 | ok_tprel = TRUE; | |
c27b8c2a AM |
8461 | else if (sym_sec != NULL |
8462 | && sym_sec->output_section != NULL) | |
766bc656 AM |
8463 | { |
8464 | value += sym_sec->output_offset; | |
8465 | value += sym_sec->output_section->vma; | |
8466 | value -= htab->elf.tls_sec->vma; | |
8467 | ok_tprel = (value + TP_OFFSET + ((bfd_vma) 1 << 31) | |
8468 | < (bfd_vma) 1 << 32); | |
8469 | } | |
102890f0 | 8470 | } |
951fd09b | 8471 | |
102890f0 | 8472 | r_type = ELF64_R_TYPE (rel->r_info); |
663a1470 AM |
8473 | /* If this section has old-style __tls_get_addr calls |
8474 | without marker relocs, then check that each | |
8475 | __tls_get_addr call reloc is preceded by a reloc | |
8476 | that conceivably belongs to the __tls_get_addr arg | |
8477 | setup insn. If we don't find matching arg setup | |
8478 | relocs, don't do any tls optimization. */ | |
8479 | if (pass == 0 | |
8480 | && sec->has_tls_get_addr_call | |
8481 | && h != NULL | |
8482 | && (h == &htab->tls_get_addr->elf | |
8483 | || h == &htab->tls_get_addr_fd->elf) | |
8484 | && !found_tls_get_addr_arg | |
8485 | && is_branch_reloc (r_type)) | |
8486 | { | |
25f53a85 | 8487 | info->callbacks->minfo (_("%H __tls_get_addr lost arg, " |
663a1470 AM |
8488 | "TLS optimization disabled\n"), |
8489 | ibfd, sec, rel->r_offset); | |
8490 | ret = TRUE; | |
8491 | goto err_free_rel; | |
8492 | } | |
8493 | ||
8494 | found_tls_get_addr_arg = 0; | |
102890f0 AM |
8495 | switch (r_type) |
8496 | { | |
8497 | case R_PPC64_GOT_TLSLD16: | |
8498 | case R_PPC64_GOT_TLSLD16_LO: | |
8499 | expecting_tls_get_addr = 1; | |
663a1470 | 8500 | found_tls_get_addr_arg = 1; |
1a0670f3 | 8501 | /* Fall through. */ |
102890f0 AM |
8502 | |
8503 | case R_PPC64_GOT_TLSLD16_HI: | |
8504 | case R_PPC64_GOT_TLSLD16_HA: | |
8505 | /* These relocs should never be against a symbol | |
8506 | defined in a shared lib. Leave them alone if | |
8507 | that turns out to be the case. */ | |
8508 | if (!is_local) | |
8509 | continue; | |
411e1bfb | 8510 | |
102890f0 | 8511 | /* LD -> LE */ |
411e1bfb | 8512 | tls_set = 0; |
102890f0 AM |
8513 | tls_clear = TLS_LD; |
8514 | tls_type = TLS_TLS | TLS_LD; | |
8515 | break; | |
411e1bfb | 8516 | |
102890f0 AM |
8517 | case R_PPC64_GOT_TLSGD16: |
8518 | case R_PPC64_GOT_TLSGD16_LO: | |
8519 | expecting_tls_get_addr = 1; | |
663a1470 | 8520 | found_tls_get_addr_arg = 1; |
1a0670f3 | 8521 | /* Fall through. */ |
102890f0 AM |
8522 | |
8523 | case R_PPC64_GOT_TLSGD16_HI: | |
8524 | case R_PPC64_GOT_TLSGD16_HA: | |
8525 | if (ok_tprel) | |
8526 | /* GD -> LE */ | |
411e1bfb | 8527 | tls_set = 0; |
102890f0 AM |
8528 | else |
8529 | /* GD -> IE */ | |
8530 | tls_set = TLS_TLS | TLS_TPRELGD; | |
8531 | tls_clear = TLS_GD; | |
8532 | tls_type = TLS_TLS | TLS_GD; | |
8533 | break; | |
8534 | ||
8535 | case R_PPC64_GOT_TPREL16_DS: | |
8536 | case R_PPC64_GOT_TPREL16_LO_DS: | |
8537 | case R_PPC64_GOT_TPREL16_HI: | |
8538 | case R_PPC64_GOT_TPREL16_HA: | |
8539 | if (ok_tprel) | |
8540 | { | |
8541 | /* IE -> LE */ | |
8542 | tls_set = 0; | |
8543 | tls_clear = TLS_TPREL; | |
8544 | tls_type = TLS_TLS | TLS_TPREL; | |
8545 | break; | |
8546 | } | |
411e1bfb AM |
8547 | continue; |
8548 | ||
727fc41e AM |
8549 | case R_PPC64_TLSGD: |
8550 | case R_PPC64_TLSLD: | |
663a1470 | 8551 | found_tls_get_addr_arg = 1; |
1a0670f3 | 8552 | /* Fall through. */ |
663a1470 AM |
8553 | |
8554 | case R_PPC64_TLS: | |
8555 | case R_PPC64_TOC16: | |
8556 | case R_PPC64_TOC16_LO: | |
102890f0 AM |
8557 | if (sym_sec == NULL || sym_sec != toc) |
8558 | continue; | |
8559 | ||
8560 | /* Mark this toc entry as referenced by a TLS | |
8561 | code sequence. We can do that now in the | |
8562 | case of R_PPC64_TLS, and after checking for | |
8563 | tls_get_addr for the TOC16 relocs. */ | |
8564 | if (toc_ref == NULL) | |
663a1470 AM |
8565 | toc_ref = bfd_zmalloc (toc->output_section->rawsize / 8); |
8566 | if (toc_ref == NULL) | |
8567 | goto err_free_rel; | |
8568 | ||
102890f0 AM |
8569 | if (h != NULL) |
8570 | value = h->root.u.def.value; | |
8571 | else | |
8572 | value = sym->st_value; | |
8573 | value += rel->r_addend; | |
73242275 AM |
8574 | if (value % 8 != 0) |
8575 | continue; | |
8576 | BFD_ASSERT (value < toc->size | |
8577 | && toc->output_offset % 8 == 0); | |
663a1470 | 8578 | toc_ref_index = (value + toc->output_offset) / 8; |
727fc41e AM |
8579 | if (r_type == R_PPC64_TLS |
8580 | || r_type == R_PPC64_TLSGD | |
8581 | || r_type == R_PPC64_TLSLD) | |
102890f0 AM |
8582 | { |
8583 | toc_ref[toc_ref_index] = 1; | |
8584 | continue; | |
8585 | } | |
8586 | ||
8587 | if (pass != 0 && toc_ref[toc_ref_index] == 0) | |
8588 | continue; | |
8589 | ||
8590 | tls_set = 0; | |
8591 | tls_clear = 0; | |
8592 | expecting_tls_get_addr = 2; | |
8593 | break; | |
8594 | ||
8595 | case R_PPC64_TPREL64: | |
8596 | if (pass == 0 | |
8597 | || sec != toc | |
8598 | || toc_ref == NULL | |
663a1470 | 8599 | || !toc_ref[(rel->r_offset + toc->output_offset) / 8]) |
102890f0 AM |
8600 | continue; |
8601 | if (ok_tprel) | |
8602 | { | |
8603 | /* IE -> LE */ | |
8604 | tls_set = TLS_EXPLICIT; | |
8605 | tls_clear = TLS_TPREL; | |
8606 | break; | |
8607 | } | |
8608 | continue; | |
8609 | ||
8610 | case R_PPC64_DTPMOD64: | |
8611 | if (pass == 0 | |
8612 | || sec != toc | |
8613 | || toc_ref == NULL | |
663a1470 | 8614 | || !toc_ref[(rel->r_offset + toc->output_offset) / 8]) |
102890f0 AM |
8615 | continue; |
8616 | if (rel + 1 < relend | |
8617 | && (rel[1].r_info | |
8618 | == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)) | |
8619 | && rel[1].r_offset == rel->r_offset + 8) | |
8620 | { | |
8621 | if (ok_tprel) | |
8622 | /* GD -> LE */ | |
8623 | tls_set = TLS_EXPLICIT | TLS_GD; | |
8624 | else | |
8625 | /* GD -> IE */ | |
8626 | tls_set = TLS_EXPLICIT | TLS_GD | TLS_TPRELGD; | |
8627 | tls_clear = TLS_GD; | |
8628 | } | |
8629 | else | |
8630 | { | |
8631 | if (!is_local) | |
8632 | continue; | |
8633 | ||
8634 | /* LD -> LE */ | |
8635 | tls_set = TLS_EXPLICIT; | |
8636 | tls_clear = TLS_LD; | |
8637 | } | |
8638 | break; | |
8639 | ||
8640 | default: | |
8641 | continue; | |
8642 | } | |
8643 | ||
8644 | if (pass == 0) | |
8645 | { | |
727fc41e AM |
8646 | if (!expecting_tls_get_addr |
8647 | || !sec->has_tls_get_addr_call) | |
102890f0 AM |
8648 | continue; |
8649 | ||
3a71aa26 AM |
8650 | if (rel + 1 < relend |
8651 | && branch_reloc_hash_match (ibfd, rel + 1, | |
8652 | htab->tls_get_addr, | |
8653 | htab->tls_get_addr_fd)) | |
102890f0 | 8654 | { |
3a71aa26 | 8655 | if (expecting_tls_get_addr == 2) |
102890f0 | 8656 | { |
3a71aa26 | 8657 | /* Check for toc tls entries. */ |
f961d9dd | 8658 | unsigned char *toc_tls; |
3a71aa26 AM |
8659 | int retval; |
8660 | ||
8661 | retval = get_tls_mask (&toc_tls, NULL, NULL, | |
8662 | &locsyms, | |
8663 | rel, ibfd); | |
8664 | if (retval == 0) | |
8665 | goto err_free_rel; | |
663a1470 AM |
8666 | if (toc_tls != NULL) |
8667 | { | |
8668 | if ((*toc_tls & (TLS_GD | TLS_LD)) != 0) | |
8669 | found_tls_get_addr_arg = 1; | |
8670 | if (retval > 1) | |
8671 | toc_ref[toc_ref_index] = 1; | |
8672 | } | |
102890f0 | 8673 | } |
3a71aa26 | 8674 | continue; |
102890f0 AM |
8675 | } |
8676 | ||
8677 | if (expecting_tls_get_addr != 1) | |
8678 | continue; | |
8679 | ||
8680 | /* Uh oh, we didn't find the expected call. We | |
8681 | could just mark this symbol to exclude it | |
8682 | from tls optimization but it's safer to skip | |
663a1470 | 8683 | the entire optimization. */ |
695344c0 | 8684 | /* xgettext:c-format */ |
25f53a85 | 8685 | info->callbacks->minfo (_("%H arg lost __tls_get_addr, " |
663a1470 AM |
8686 | "TLS optimization disabled\n"), |
8687 | ibfd, sec, rel->r_offset); | |
8688 | ret = TRUE; | |
8689 | goto err_free_rel; | |
102890f0 AM |
8690 | } |
8691 | ||
85f7a9cb | 8692 | if (expecting_tls_get_addr && htab->tls_get_addr != NULL) |
102890f0 AM |
8693 | { |
8694 | struct plt_entry *ent; | |
8695 | for (ent = htab->tls_get_addr->elf.plt.plist; | |
8696 | ent != NULL; | |
8697 | ent = ent->next) | |
8698 | if (ent->addend == 0) | |
411e1bfb | 8699 | { |
102890f0 | 8700 | if (ent->plt.refcount > 0) |
30038c59 | 8701 | { |
102890f0 AM |
8702 | ent->plt.refcount -= 1; |
8703 | expecting_tls_get_addr = 0; | |
30038c59 | 8704 | } |
102890f0 | 8705 | break; |
411e1bfb | 8706 | } |
102890f0 | 8707 | } |
411e1bfb | 8708 | |
85f7a9cb | 8709 | if (expecting_tls_get_addr && htab->tls_get_addr_fd != NULL) |
102890f0 AM |
8710 | { |
8711 | struct plt_entry *ent; | |
8712 | for (ent = htab->tls_get_addr_fd->elf.plt.plist; | |
8713 | ent != NULL; | |
8714 | ent = ent->next) | |
8715 | if (ent->addend == 0) | |
411e1bfb | 8716 | { |
102890f0 AM |
8717 | if (ent->plt.refcount > 0) |
8718 | ent->plt.refcount -= 1; | |
8719 | break; | |
411e1bfb | 8720 | } |
102890f0 | 8721 | } |
411e1bfb | 8722 | |
102890f0 | 8723 | if (tls_clear == 0) |
30038c59 AM |
8724 | continue; |
8725 | ||
102890f0 AM |
8726 | if ((tls_set & TLS_EXPLICIT) == 0) |
8727 | { | |
8728 | struct got_entry *ent; | |
411e1bfb | 8729 | |
102890f0 AM |
8730 | /* Adjust got entry for this reloc. */ |
8731 | if (h != NULL) | |
8732 | ent = h->got.glist; | |
8733 | else | |
8734 | ent = elf_local_got_ents (ibfd)[r_symndx]; | |
411e1bfb | 8735 | |
102890f0 AM |
8736 | for (; ent != NULL; ent = ent->next) |
8737 | if (ent->addend == rel->r_addend | |
8738 | && ent->owner == ibfd | |
8739 | && ent->tls_type == tls_type) | |
8740 | break; | |
8741 | if (ent == NULL) | |
8742 | abort (); | |
411e1bfb | 8743 | |
102890f0 AM |
8744 | if (tls_set == 0) |
8745 | { | |
8746 | /* We managed to get rid of a got entry. */ | |
8747 | if (ent->got.refcount > 0) | |
8748 | ent->got.refcount -= 1; | |
8749 | } | |
8750 | } | |
8751 | else | |
8752 | { | |
8753 | /* If we got rid of a DTPMOD/DTPREL reloc pair then | |
8754 | we'll lose one or two dyn relocs. */ | |
8755 | if (!dec_dynrel_count (rel->r_info, sec, info, | |
19e08130 | 8756 | NULL, h, sym)) |
102890f0 | 8757 | return FALSE; |
411e1bfb | 8758 | |
102890f0 AM |
8759 | if (tls_set == (TLS_EXPLICIT | TLS_GD)) |
8760 | { | |
8761 | if (!dec_dynrel_count ((rel + 1)->r_info, sec, info, | |
19e08130 | 8762 | NULL, h, sym)) |
102890f0 AM |
8763 | return FALSE; |
8764 | } | |
8765 | } | |
411e1bfb | 8766 | |
102890f0 AM |
8767 | *tls_mask |= tls_set; |
8768 | *tls_mask &= ~tls_clear; | |
8769 | } | |
8c1d1bb8 | 8770 | |
102890f0 AM |
8771 | if (elf_section_data (sec)->relocs != relstart) |
8772 | free (relstart); | |
8773 | } | |
411e1bfb | 8774 | |
663a1470 AM |
8775 | if (locsyms != NULL |
8776 | && (elf_symtab_hdr (ibfd).contents != (unsigned char *) locsyms)) | |
8777 | { | |
8778 | if (!info->keep_memory) | |
8779 | free (locsyms); | |
8780 | else | |
8781 | elf_symtab_hdr (ibfd).contents = (unsigned char *) locsyms; | |
8782 | } | |
8783 | } | |
411e1bfb | 8784 | |
663a1470 AM |
8785 | if (toc_ref != NULL) |
8786 | free (toc_ref); | |
9a23f96e | 8787 | htab->do_tls_opt = 1; |
b34976b6 | 8788 | return TRUE; |
1e2f5b6e | 8789 | } |
b34976b6 | 8790 | |
c5614fa4 AM |
8791 | /* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust |
8792 | the values of any global symbols in a toc section that has been | |
8793 | edited. Globals in toc sections should be a rarity, so this function | |
8794 | sets a flag if any are found in toc sections other than the one just | |
de194d85 | 8795 | edited, so that further hash table traversals can be avoided. */ |
c5614fa4 AM |
8796 | |
8797 | struct adjust_toc_info | |
8798 | { | |
8799 | asection *toc; | |
8800 | unsigned long *skip; | |
8801 | bfd_boolean global_toc_syms; | |
8802 | }; | |
8803 | ||
ba761f19 AM |
8804 | enum toc_skip_enum { ref_from_discarded = 1, can_optimize = 2 }; |
8805 | ||
c5614fa4 AM |
8806 | static bfd_boolean |
8807 | adjust_toc_syms (struct elf_link_hash_entry *h, void *inf) | |
8808 | { | |
8809 | struct ppc_link_hash_entry *eh; | |
8810 | struct adjust_toc_info *toc_inf = (struct adjust_toc_info *) inf; | |
854b41e7 | 8811 | unsigned long i; |
c5614fa4 | 8812 | |
c5614fa4 AM |
8813 | if (h->root.type != bfd_link_hash_defined |
8814 | && h->root.type != bfd_link_hash_defweak) | |
8815 | return TRUE; | |
8816 | ||
8817 | eh = (struct ppc_link_hash_entry *) h; | |
8818 | if (eh->adjust_done) | |
8819 | return TRUE; | |
8820 | ||
8821 | if (eh->elf.root.u.def.section == toc_inf->toc) | |
8822 | { | |
854b41e7 AM |
8823 | if (eh->elf.root.u.def.value > toc_inf->toc->rawsize) |
8824 | i = toc_inf->toc->rawsize >> 3; | |
c5614fa4 | 8825 | else |
854b41e7 AM |
8826 | i = eh->elf.root.u.def.value >> 3; |
8827 | ||
ba761f19 | 8828 | if ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0) |
c5614fa4 | 8829 | { |
4eca0228 | 8830 | _bfd_error_handler |
854b41e7 AM |
8831 | (_("%s defined on removed toc entry"), eh->elf.root.root.string); |
8832 | do | |
8833 | ++i; | |
ba761f19 | 8834 | while ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0); |
854b41e7 | 8835 | eh->elf.root.u.def.value = (bfd_vma) i << 3; |
c5614fa4 | 8836 | } |
854b41e7 AM |
8837 | |
8838 | eh->elf.root.u.def.value -= toc_inf->skip[i]; | |
c5614fa4 AM |
8839 | eh->adjust_done = 1; |
8840 | } | |
8841 | else if (strcmp (eh->elf.root.u.def.section->name, ".toc") == 0) | |
8842 | toc_inf->global_toc_syms = TRUE; | |
8843 | ||
8844 | return TRUE; | |
8845 | } | |
8846 | ||
39eeab25 AM |
8847 | /* Return TRUE iff INSN with a relocation of R_TYPE is one we expect |
8848 | on a _LO variety toc/got reloc. */ | |
560c8763 AM |
8849 | |
8850 | static bfd_boolean | |
39eeab25 | 8851 | ok_lo_toc_insn (unsigned int insn, enum elf_ppc64_reloc_type r_type) |
560c8763 | 8852 | { |
39eeab25 AM |
8853 | return ((insn & (0x3f << 26)) == 12u << 26 /* addic */ |
8854 | || (insn & (0x3f << 26)) == 14u << 26 /* addi */ | |
560c8763 AM |
8855 | || (insn & (0x3f << 26)) == 32u << 26 /* lwz */ |
8856 | || (insn & (0x3f << 26)) == 34u << 26 /* lbz */ | |
8857 | || (insn & (0x3f << 26)) == 36u << 26 /* stw */ | |
8858 | || (insn & (0x3f << 26)) == 38u << 26 /* stb */ | |
8859 | || (insn & (0x3f << 26)) == 40u << 26 /* lhz */ | |
8860 | || (insn & (0x3f << 26)) == 42u << 26 /* lha */ | |
8861 | || (insn & (0x3f << 26)) == 44u << 26 /* sth */ | |
8862 | || (insn & (0x3f << 26)) == 46u << 26 /* lmw */ | |
8863 | || (insn & (0x3f << 26)) == 47u << 26 /* stmw */ | |
8864 | || (insn & (0x3f << 26)) == 48u << 26 /* lfs */ | |
8865 | || (insn & (0x3f << 26)) == 50u << 26 /* lfd */ | |
8866 | || (insn & (0x3f << 26)) == 52u << 26 /* stfs */ | |
8867 | || (insn & (0x3f << 26)) == 54u << 26 /* stfd */ | |
39eeab25 AM |
8868 | || (insn & (0x3f << 26)) == 56u << 26 /* lq,lfq */ |
8869 | || ((insn & (0x3f << 26)) == 57u << 26 /* lxsd,lxssp,lfdp */ | |
8870 | /* Exclude lfqu by testing reloc. If relocs are ever | |
8871 | defined for the reduced D field in psq_lu then those | |
8872 | will need testing too. */ | |
8873 | && r_type != R_PPC64_TOC16_LO && r_type != R_PPC64_GOT16_LO) | |
8874 | || ((insn & (0x3f << 26)) == 58u << 26 /* ld,lwa */ | |
8875 | && (insn & 1) == 0) | |
8876 | || (insn & (0x3f << 26)) == 60u << 26 /* stfq */ | |
8877 | || ((insn & (0x3f << 26)) == 61u << 26 /* lxv,stx{v,sd,ssp},stfdp */ | |
8878 | /* Exclude stfqu. psq_stu as above for psq_lu. */ | |
8879 | && r_type != R_PPC64_TOC16_LO && r_type != R_PPC64_GOT16_LO) | |
8880 | || ((insn & (0x3f << 26)) == 62u << 26 /* std,stq */ | |
8881 | && (insn & 1) == 0)); | |
560c8763 AM |
8882 | } |
8883 | ||
c5614fa4 AM |
8884 | /* Examine all relocs referencing .toc sections in order to remove |
8885 | unused .toc entries. */ | |
8886 | ||
8887 | bfd_boolean | |
33c0ec9d | 8888 | ppc64_elf_edit_toc (struct bfd_link_info *info) |
c5614fa4 AM |
8889 | { |
8890 | bfd *ibfd; | |
8891 | struct adjust_toc_info toc_inf; | |
67f0cbdb | 8892 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
c5614fa4 | 8893 | |
67f0cbdb | 8894 | htab->do_toc_opt = 1; |
c5614fa4 | 8895 | toc_inf.global_toc_syms = TRUE; |
c72f2fb2 | 8896 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
c5614fa4 AM |
8897 | { |
8898 | asection *toc, *sec; | |
8899 | Elf_Internal_Shdr *symtab_hdr; | |
8900 | Elf_Internal_Sym *local_syms; | |
425b145b | 8901 | Elf_Internal_Rela *relstart, *rel, *toc_relocs; |
c5614fa4 AM |
8902 | unsigned long *skip, *drop; |
8903 | unsigned char *used; | |
8904 | unsigned char *keep, last, some_unused; | |
8905 | ||
854b41e7 AM |
8906 | if (!is_ppc64_elf (ibfd)) |
8907 | continue; | |
8908 | ||
c5614fa4 AM |
8909 | toc = bfd_get_section_by_name (ibfd, ".toc"); |
8910 | if (toc == NULL | |
92b7a70f | 8911 | || toc->size == 0 |
dbaa2011 AM |
8912 | || toc->sec_info_type == SEC_INFO_TYPE_JUST_SYMS |
8913 | || discarded_section (toc)) | |
c5614fa4 AM |
8914 | continue; |
8915 | ||
425b145b | 8916 | toc_relocs = NULL; |
c5614fa4 | 8917 | local_syms = NULL; |
0ffa91dd | 8918 | symtab_hdr = &elf_symtab_hdr (ibfd); |
c5614fa4 AM |
8919 | |
8920 | /* Look at sections dropped from the final link. */ | |
8921 | skip = NULL; | |
8922 | relstart = NULL; | |
8923 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
8924 | { | |
8925 | if (sec->reloc_count == 0 | |
dbaa2011 | 8926 | || !discarded_section (sec) |
c5614fa4 AM |
8927 | || get_opd_info (sec) |
8928 | || (sec->flags & SEC_ALLOC) == 0 | |
8929 | || (sec->flags & SEC_DEBUGGING) != 0) | |
8930 | continue; | |
8931 | ||
8932 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, FALSE); | |
8933 | if (relstart == NULL) | |
8934 | goto error_ret; | |
8935 | ||
8936 | /* Run through the relocs to see which toc entries might be | |
8937 | unused. */ | |
8938 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
8939 | { | |
8940 | enum elf_ppc64_reloc_type r_type; | |
8941 | unsigned long r_symndx; | |
8942 | asection *sym_sec; | |
8943 | struct elf_link_hash_entry *h; | |
8944 | Elf_Internal_Sym *sym; | |
8945 | bfd_vma val; | |
8946 | ||
8947 | r_type = ELF64_R_TYPE (rel->r_info); | |
8948 | switch (r_type) | |
8949 | { | |
8950 | default: | |
8951 | continue; | |
8952 | ||
8953 | case R_PPC64_TOC16: | |
8954 | case R_PPC64_TOC16_LO: | |
8955 | case R_PPC64_TOC16_HI: | |
8956 | case R_PPC64_TOC16_HA: | |
8957 | case R_PPC64_TOC16_DS: | |
8958 | case R_PPC64_TOC16_LO_DS: | |
8959 | break; | |
8960 | } | |
8961 | ||
8962 | r_symndx = ELF64_R_SYM (rel->r_info); | |
8963 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
8964 | r_symndx, ibfd)) | |
8965 | goto error_ret; | |
8966 | ||
8967 | if (sym_sec != toc) | |
8968 | continue; | |
8969 | ||
8970 | if (h != NULL) | |
8971 | val = h->root.u.def.value; | |
8972 | else | |
8973 | val = sym->st_value; | |
8974 | val += rel->r_addend; | |
8975 | ||
8976 | if (val >= toc->size) | |
8977 | continue; | |
8978 | ||
8979 | /* Anything in the toc ought to be aligned to 8 bytes. | |
8980 | If not, don't mark as unused. */ | |
8981 | if (val & 7) | |
8982 | continue; | |
8983 | ||
8984 | if (skip == NULL) | |
8985 | { | |
854b41e7 | 8986 | skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8); |
c5614fa4 AM |
8987 | if (skip == NULL) |
8988 | goto error_ret; | |
8989 | } | |
8990 | ||
ba761f19 | 8991 | skip[val >> 3] = ref_from_discarded; |
c5614fa4 AM |
8992 | } |
8993 | ||
8994 | if (elf_section_data (sec)->relocs != relstart) | |
8995 | free (relstart); | |
8996 | } | |
8997 | ||
ba761f19 AM |
8998 | /* For largetoc loads of address constants, we can convert |
8999 | . addis rx,2,addr@got@ha | |
9000 | . ld ry,addr@got@l(rx) | |
9001 | to | |
9002 | . addis rx,2,addr@toc@ha | |
9003 | . addi ry,rx,addr@toc@l | |
9004 | when addr is within 2G of the toc pointer. This then means | |
9005 | that the word storing "addr" in the toc is no longer needed. */ | |
68ffbac6 | 9006 | |
ba761f19 AM |
9007 | if (!ppc64_elf_tdata (ibfd)->has_small_toc_reloc |
9008 | && toc->output_section->rawsize < (bfd_vma) 1 << 31 | |
9009 | && toc->reloc_count != 0) | |
9010 | { | |
9011 | /* Read toc relocs. */ | |
425b145b AM |
9012 | toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL, |
9013 | info->keep_memory); | |
9014 | if (toc_relocs == NULL) | |
ba761f19 AM |
9015 | goto error_ret; |
9016 | ||
425b145b | 9017 | for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel) |
ba761f19 AM |
9018 | { |
9019 | enum elf_ppc64_reloc_type r_type; | |
9020 | unsigned long r_symndx; | |
9021 | asection *sym_sec; | |
9022 | struct elf_link_hash_entry *h; | |
9023 | Elf_Internal_Sym *sym; | |
9024 | bfd_vma val, addr; | |
9025 | ||
9026 | r_type = ELF64_R_TYPE (rel->r_info); | |
9027 | if (r_type != R_PPC64_ADDR64) | |
9028 | continue; | |
9029 | ||
9030 | r_symndx = ELF64_R_SYM (rel->r_info); | |
9031 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
9032 | r_symndx, ibfd)) | |
9033 | goto error_ret; | |
9034 | ||
425b145b | 9035 | if (sym_sec == NULL |
c27b8c2a | 9036 | || sym_sec->output_section == NULL |
dbaa2011 | 9037 | || discarded_section (sym_sec)) |
425b145b AM |
9038 | continue; |
9039 | ||
afe397ea | 9040 | if (!SYMBOL_REFERENCES_LOCAL (info, h)) |
ba761f19 AM |
9041 | continue; |
9042 | ||
9043 | if (h != NULL) | |
bddc25c9 AM |
9044 | { |
9045 | if (h->type == STT_GNU_IFUNC) | |
9046 | continue; | |
9047 | val = h->root.u.def.value; | |
9048 | } | |
ba761f19 | 9049 | else |
bddc25c9 AM |
9050 | { |
9051 | if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
9052 | continue; | |
9053 | val = sym->st_value; | |
9054 | } | |
ba761f19 AM |
9055 | val += rel->r_addend; |
9056 | val += sym_sec->output_section->vma + sym_sec->output_offset; | |
9057 | ||
9058 | /* We don't yet know the exact toc pointer value, but we | |
9059 | know it will be somewhere in the toc section. Don't | |
9060 | optimize if the difference from any possible toc | |
9061 | pointer is outside [ff..f80008000, 7fff7fff]. */ | |
9062 | addr = toc->output_section->vma + TOC_BASE_OFF; | |
9063 | if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32) | |
9064 | continue; | |
9065 | ||
9066 | addr = toc->output_section->vma + toc->output_section->rawsize; | |
9067 | if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32) | |
9068 | continue; | |
9069 | ||
9070 | if (skip == NULL) | |
9071 | { | |
9072 | skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8); | |
9073 | if (skip == NULL) | |
9074 | goto error_ret; | |
9075 | } | |
9076 | ||
9077 | skip[rel->r_offset >> 3] | |
425b145b | 9078 | |= can_optimize | ((rel - toc_relocs) << 2); |
ba761f19 | 9079 | } |
ba761f19 AM |
9080 | } |
9081 | ||
c5614fa4 AM |
9082 | if (skip == NULL) |
9083 | continue; | |
9084 | ||
9085 | used = bfd_zmalloc (sizeof (*used) * (toc->size + 7) / 8); | |
9086 | if (used == NULL) | |
9087 | { | |
9088 | error_ret: | |
9089 | if (local_syms != NULL | |
9090 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
9091 | free (local_syms); | |
9092 | if (sec != NULL | |
9093 | && relstart != NULL | |
9094 | && elf_section_data (sec)->relocs != relstart) | |
9095 | free (relstart); | |
425b145b AM |
9096 | if (toc_relocs != NULL |
9097 | && elf_section_data (toc)->relocs != toc_relocs) | |
9098 | free (toc_relocs); | |
c5614fa4 AM |
9099 | if (skip != NULL) |
9100 | free (skip); | |
9101 | return FALSE; | |
9102 | } | |
9103 | ||
30038c59 AM |
9104 | /* Now check all kept sections that might reference the toc. |
9105 | Check the toc itself last. */ | |
9106 | for (sec = (ibfd->sections == toc && toc->next ? toc->next | |
9107 | : ibfd->sections); | |
c5614fa4 | 9108 | sec != NULL; |
c5614fa4 | 9109 | sec = (sec == toc ? NULL |
c5614fa4 | 9110 | : sec->next == NULL ? toc |
30038c59 | 9111 | : sec->next == toc && toc->next ? toc->next |
c5614fa4 AM |
9112 | : sec->next)) |
9113 | { | |
9114 | int repeat; | |
9115 | ||
9116 | if (sec->reloc_count == 0 | |
dbaa2011 | 9117 | || discarded_section (sec) |
c5614fa4 AM |
9118 | || get_opd_info (sec) |
9119 | || (sec->flags & SEC_ALLOC) == 0 | |
9120 | || (sec->flags & SEC_DEBUGGING) != 0) | |
9121 | continue; | |
9122 | ||
854b41e7 AM |
9123 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, |
9124 | info->keep_memory); | |
c5614fa4 | 9125 | if (relstart == NULL) |
2915c55b JK |
9126 | { |
9127 | free (used); | |
9128 | goto error_ret; | |
9129 | } | |
c5614fa4 AM |
9130 | |
9131 | /* Mark toc entries referenced as used. */ | |
c5614fa4 | 9132 | do |
d4f1ee75 AM |
9133 | { |
9134 | repeat = 0; | |
9135 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
9136 | { | |
9137 | enum elf_ppc64_reloc_type r_type; | |
9138 | unsigned long r_symndx; | |
9139 | asection *sym_sec; | |
9140 | struct elf_link_hash_entry *h; | |
9141 | Elf_Internal_Sym *sym; | |
9142 | bfd_vma val; | |
9143 | enum {no_check, check_lo, check_ha} insn_check; | |
98528052 | 9144 | |
d4f1ee75 AM |
9145 | r_type = ELF64_R_TYPE (rel->r_info); |
9146 | switch (r_type) | |
9147 | { | |
9148 | default: | |
9149 | insn_check = no_check; | |
9150 | break; | |
98528052 | 9151 | |
d4f1ee75 AM |
9152 | case R_PPC64_GOT_TLSLD16_HA: |
9153 | case R_PPC64_GOT_TLSGD16_HA: | |
9154 | case R_PPC64_GOT_TPREL16_HA: | |
9155 | case R_PPC64_GOT_DTPREL16_HA: | |
9156 | case R_PPC64_GOT16_HA: | |
9157 | case R_PPC64_TOC16_HA: | |
9158 | insn_check = check_ha; | |
9159 | break; | |
98528052 | 9160 | |
d4f1ee75 AM |
9161 | case R_PPC64_GOT_TLSLD16_LO: |
9162 | case R_PPC64_GOT_TLSGD16_LO: | |
9163 | case R_PPC64_GOT_TPREL16_LO_DS: | |
9164 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
9165 | case R_PPC64_GOT16_LO: | |
9166 | case R_PPC64_GOT16_LO_DS: | |
9167 | case R_PPC64_TOC16_LO: | |
9168 | case R_PPC64_TOC16_LO_DS: | |
9169 | insn_check = check_lo; | |
9170 | break; | |
9171 | } | |
560c8763 | 9172 | |
d4f1ee75 AM |
9173 | if (insn_check != no_check) |
9174 | { | |
9175 | bfd_vma off = rel->r_offset & ~3; | |
9176 | unsigned char buf[4]; | |
9177 | unsigned int insn; | |
c5614fa4 | 9178 | |
d4f1ee75 AM |
9179 | if (!bfd_get_section_contents (ibfd, sec, buf, off, 4)) |
9180 | { | |
9181 | free (used); | |
9182 | goto error_ret; | |
9183 | } | |
9184 | insn = bfd_get_32 (ibfd, buf); | |
9185 | if (insn_check == check_lo | |
39eeab25 | 9186 | ? !ok_lo_toc_insn (insn, r_type) |
d4f1ee75 AM |
9187 | : ((insn & ((0x3f << 26) | 0x1f << 16)) |
9188 | != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */)) | |
9189 | { | |
9190 | char str[12]; | |
9191 | ||
9192 | ppc64_elf_tdata (ibfd)->unexpected_toc_insn = 1; | |
9193 | sprintf (str, "%#08x", insn); | |
9194 | info->callbacks->einfo | |
695344c0 | 9195 | /* xgettext:c-format */ |
174d0a74 | 9196 | (_("%H: toc optimization is not supported for" |
cf97bcb0 | 9197 | " %s instruction\n"), |
d4f1ee75 AM |
9198 | ibfd, sec, rel->r_offset & ~3, str); |
9199 | } | |
9200 | } | |
c5614fa4 | 9201 | |
d4f1ee75 AM |
9202 | switch (r_type) |
9203 | { | |
9204 | case R_PPC64_TOC16: | |
9205 | case R_PPC64_TOC16_LO: | |
9206 | case R_PPC64_TOC16_HI: | |
9207 | case R_PPC64_TOC16_HA: | |
9208 | case R_PPC64_TOC16_DS: | |
9209 | case R_PPC64_TOC16_LO_DS: | |
9210 | /* In case we're taking addresses of toc entries. */ | |
9211 | case R_PPC64_ADDR64: | |
9212 | break; | |
c5614fa4 | 9213 | |
d4f1ee75 AM |
9214 | default: |
9215 | continue; | |
9216 | } | |
c5614fa4 | 9217 | |
d4f1ee75 AM |
9218 | r_symndx = ELF64_R_SYM (rel->r_info); |
9219 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
9220 | r_symndx, ibfd)) | |
9221 | { | |
9222 | free (used); | |
9223 | goto error_ret; | |
9224 | } | |
c5614fa4 | 9225 | |
d4f1ee75 AM |
9226 | if (sym_sec != toc) |
9227 | continue; | |
c5614fa4 | 9228 | |
d4f1ee75 AM |
9229 | if (h != NULL) |
9230 | val = h->root.u.def.value; | |
9231 | else | |
9232 | val = sym->st_value; | |
9233 | val += rel->r_addend; | |
ba761f19 | 9234 | |
d4f1ee75 AM |
9235 | if (val >= toc->size) |
9236 | continue; | |
ba761f19 | 9237 | |
d4f1ee75 AM |
9238 | if ((skip[val >> 3] & can_optimize) != 0) |
9239 | { | |
9240 | bfd_vma off; | |
9241 | unsigned char opc; | |
9242 | ||
9243 | switch (r_type) | |
9244 | { | |
9245 | case R_PPC64_TOC16_HA: | |
ba761f19 | 9246 | break; |
ba761f19 | 9247 | |
d4f1ee75 AM |
9248 | case R_PPC64_TOC16_LO_DS: |
9249 | off = rel->r_offset; | |
9250 | off += (bfd_big_endian (ibfd) ? -2 : 3); | |
9251 | if (!bfd_get_section_contents (ibfd, sec, &opc, | |
9252 | off, 1)) | |
9253 | { | |
9254 | free (used); | |
9255 | goto error_ret; | |
9256 | } | |
9257 | if ((opc & (0x3f << 2)) == (58u << 2)) | |
9258 | break; | |
1a0670f3 | 9259 | /* Fall through. */ |
ba761f19 | 9260 | |
d4f1ee75 AM |
9261 | default: |
9262 | /* Wrong sort of reloc, or not a ld. We may | |
9263 | as well clear ref_from_discarded too. */ | |
9264 | skip[val >> 3] = 0; | |
9265 | } | |
9266 | } | |
9267 | ||
9268 | if (sec != toc) | |
9269 | used[val >> 3] = 1; | |
9270 | /* For the toc section, we only mark as used if this | |
9271 | entry itself isn't unused. */ | |
9272 | else if ((used[rel->r_offset >> 3] | |
9273 | || !(skip[rel->r_offset >> 3] & ref_from_discarded)) | |
9274 | && !used[val >> 3]) | |
9275 | { | |
9276 | /* Do all the relocs again, to catch reference | |
9277 | chains. */ | |
9278 | repeat = 1; | |
9279 | used[val >> 3] = 1; | |
9280 | } | |
9281 | } | |
9282 | } | |
c5614fa4 | 9283 | while (repeat); |
854b41e7 AM |
9284 | |
9285 | if (elf_section_data (sec)->relocs != relstart) | |
9286 | free (relstart); | |
c5614fa4 AM |
9287 | } |
9288 | ||
9289 | /* Merge the used and skip arrays. Assume that TOC | |
9290 | doublewords not appearing as either used or unused belong | |
de194d85 | 9291 | to an entry more than one doubleword in size. */ |
c5614fa4 AM |
9292 | for (drop = skip, keep = used, last = 0, some_unused = 0; |
9293 | drop < skip + (toc->size + 7) / 8; | |
9294 | ++drop, ++keep) | |
9295 | { | |
9296 | if (*keep) | |
9297 | { | |
ba761f19 AM |
9298 | *drop &= ~ref_from_discarded; |
9299 | if ((*drop & can_optimize) != 0) | |
9300 | some_unused = 1; | |
c5614fa4 AM |
9301 | last = 0; |
9302 | } | |
b140b010 | 9303 | else if ((*drop & ref_from_discarded) != 0) |
c5614fa4 AM |
9304 | { |
9305 | some_unused = 1; | |
ba761f19 | 9306 | last = ref_from_discarded; |
c5614fa4 AM |
9307 | } |
9308 | else | |
9309 | *drop = last; | |
9310 | } | |
9311 | ||
9312 | free (used); | |
9313 | ||
9314 | if (some_unused) | |
9315 | { | |
9316 | bfd_byte *contents, *src; | |
9317 | unsigned long off; | |
d62b3684 | 9318 | Elf_Internal_Sym *sym; |
ba761f19 | 9319 | bfd_boolean local_toc_syms = FALSE; |
c5614fa4 AM |
9320 | |
9321 | /* Shuffle the toc contents, and at the same time convert the | |
9322 | skip array from booleans into offsets. */ | |
9323 | if (!bfd_malloc_and_get_section (ibfd, toc, &contents)) | |
9324 | goto error_ret; | |
9325 | ||
9326 | elf_section_data (toc)->this_hdr.contents = contents; | |
9327 | ||
9328 | for (src = contents, off = 0, drop = skip; | |
9329 | src < contents + toc->size; | |
9330 | src += 8, ++drop) | |
9331 | { | |
ba761f19 AM |
9332 | if ((*drop & (can_optimize | ref_from_discarded)) != 0) |
9333 | off += 8; | |
c5614fa4 AM |
9334 | else if (off != 0) |
9335 | { | |
9336 | *drop = off; | |
9337 | memcpy (src - off, src, 8); | |
9338 | } | |
9339 | } | |
854b41e7 | 9340 | *drop = off; |
c5614fa4 AM |
9341 | toc->rawsize = toc->size; |
9342 | toc->size = src - contents - off; | |
9343 | ||
ba761f19 AM |
9344 | /* Adjust addends for relocs against the toc section sym, |
9345 | and optimize any accesses we can. */ | |
c5614fa4 AM |
9346 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) |
9347 | { | |
9348 | if (sec->reloc_count == 0 | |
dbaa2011 | 9349 | || discarded_section (sec)) |
c5614fa4 AM |
9350 | continue; |
9351 | ||
9352 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, | |
854b41e7 | 9353 | info->keep_memory); |
c5614fa4 AM |
9354 | if (relstart == NULL) |
9355 | goto error_ret; | |
9356 | ||
9357 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
9358 | { | |
9359 | enum elf_ppc64_reloc_type r_type; | |
9360 | unsigned long r_symndx; | |
9361 | asection *sym_sec; | |
9362 | struct elf_link_hash_entry *h; | |
854b41e7 | 9363 | bfd_vma val; |
c5614fa4 AM |
9364 | |
9365 | r_type = ELF64_R_TYPE (rel->r_info); | |
9366 | switch (r_type) | |
9367 | { | |
9368 | default: | |
9369 | continue; | |
9370 | ||
9371 | case R_PPC64_TOC16: | |
9372 | case R_PPC64_TOC16_LO: | |
9373 | case R_PPC64_TOC16_HI: | |
9374 | case R_PPC64_TOC16_HA: | |
9375 | case R_PPC64_TOC16_DS: | |
9376 | case R_PPC64_TOC16_LO_DS: | |
9377 | case R_PPC64_ADDR64: | |
9378 | break; | |
9379 | } | |
9380 | ||
9381 | r_symndx = ELF64_R_SYM (rel->r_info); | |
9382 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
9383 | r_symndx, ibfd)) | |
9384 | goto error_ret; | |
9385 | ||
ba761f19 | 9386 | if (sym_sec != toc) |
c5614fa4 AM |
9387 | continue; |
9388 | ||
ba761f19 AM |
9389 | if (h != NULL) |
9390 | val = h->root.u.def.value; | |
9391 | else | |
9392 | { | |
9393 | val = sym->st_value; | |
9394 | if (val != 0) | |
9395 | local_toc_syms = TRUE; | |
9396 | } | |
9397 | ||
9398 | val += rel->r_addend; | |
854b41e7 AM |
9399 | |
9400 | if (val > toc->rawsize) | |
9401 | val = toc->rawsize; | |
ba761f19 AM |
9402 | else if ((skip[val >> 3] & ref_from_discarded) != 0) |
9403 | continue; | |
9404 | else if ((skip[val >> 3] & can_optimize) != 0) | |
9405 | { | |
9406 | Elf_Internal_Rela *tocrel | |
425b145b | 9407 | = toc_relocs + (skip[val >> 3] >> 2); |
ba761f19 AM |
9408 | unsigned long tsym = ELF64_R_SYM (tocrel->r_info); |
9409 | ||
9410 | switch (r_type) | |
9411 | { | |
9412 | case R_PPC64_TOC16_HA: | |
9413 | rel->r_info = ELF64_R_INFO (tsym, R_PPC64_TOC16_HA); | |
9414 | break; | |
9415 | ||
9416 | case R_PPC64_TOC16_LO_DS: | |
9417 | rel->r_info = ELF64_R_INFO (tsym, R_PPC64_LO_DS_OPT); | |
9418 | break; | |
9419 | ||
9420 | default: | |
28942f62 AM |
9421 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) |
9422 | ppc_howto_init (); | |
b140b010 | 9423 | info->callbacks->einfo |
695344c0 | 9424 | /* xgettext:c-format */ |
174d0a74 | 9425 | (_("%H: %s references " |
b140b010 AM |
9426 | "optimized away TOC entry\n"), |
9427 | ibfd, sec, rel->r_offset, | |
9428 | ppc64_elf_howto_table[r_type]->name); | |
9429 | bfd_set_error (bfd_error_bad_value); | |
9430 | goto error_ret; | |
ba761f19 AM |
9431 | } |
9432 | rel->r_addend = tocrel->r_addend; | |
9433 | elf_section_data (sec)->relocs = relstart; | |
9434 | continue; | |
9435 | } | |
9436 | ||
9437 | if (h != NULL || sym->st_value != 0) | |
9438 | continue; | |
854b41e7 AM |
9439 | |
9440 | rel->r_addend -= skip[val >> 3]; | |
9441 | elf_section_data (sec)->relocs = relstart; | |
c5614fa4 | 9442 | } |
854b41e7 AM |
9443 | |
9444 | if (elf_section_data (sec)->relocs != relstart) | |
9445 | free (relstart); | |
c5614fa4 AM |
9446 | } |
9447 | ||
9448 | /* We shouldn't have local or global symbols defined in the TOC, | |
9449 | but handle them anyway. */ | |
df22d223 AM |
9450 | if (local_syms != NULL) |
9451 | for (sym = local_syms; | |
9452 | sym < local_syms + symtab_hdr->sh_info; | |
9453 | ++sym) | |
9454 | if (sym->st_value != 0 | |
9455 | && bfd_section_from_elf_index (ibfd, sym->st_shndx) == toc) | |
9456 | { | |
9457 | unsigned long i; | |
854b41e7 | 9458 | |
df22d223 AM |
9459 | if (sym->st_value > toc->rawsize) |
9460 | i = toc->rawsize >> 3; | |
9461 | else | |
9462 | i = sym->st_value >> 3; | |
854b41e7 | 9463 | |
df22d223 AM |
9464 | if ((skip[i] & (ref_from_discarded | can_optimize)) != 0) |
9465 | { | |
9466 | if (local_toc_syms) | |
4eca0228 | 9467 | _bfd_error_handler |
df22d223 AM |
9468 | (_("%s defined on removed toc entry"), |
9469 | bfd_elf_sym_name (ibfd, symtab_hdr, sym, NULL)); | |
9470 | do | |
9471 | ++i; | |
9472 | while ((skip[i] & (ref_from_discarded | can_optimize))); | |
9473 | sym->st_value = (bfd_vma) i << 3; | |
9474 | } | |
d62b3684 | 9475 | |
df22d223 AM |
9476 | sym->st_value -= skip[i]; |
9477 | symtab_hdr->contents = (unsigned char *) local_syms; | |
9478 | } | |
c5614fa4 | 9479 | |
854b41e7 | 9480 | /* Adjust any global syms defined in this toc input section. */ |
c5614fa4 AM |
9481 | if (toc_inf.global_toc_syms) |
9482 | { | |
9483 | toc_inf.toc = toc; | |
9484 | toc_inf.skip = skip; | |
9485 | toc_inf.global_toc_syms = FALSE; | |
9486 | elf_link_hash_traverse (elf_hash_table (info), adjust_toc_syms, | |
9487 | &toc_inf); | |
9488 | } | |
854b41e7 AM |
9489 | |
9490 | if (toc->reloc_count != 0) | |
9491 | { | |
d4730f92 | 9492 | Elf_Internal_Shdr *rel_hdr; |
854b41e7 AM |
9493 | Elf_Internal_Rela *wrel; |
9494 | bfd_size_type sz; | |
9495 | ||
854b41e7 | 9496 | /* Remove unused toc relocs, and adjust those we keep. */ |
28be611c AM |
9497 | if (toc_relocs == NULL) |
9498 | toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL, | |
9499 | info->keep_memory); | |
9500 | if (toc_relocs == NULL) | |
9501 | goto error_ret; | |
9502 | ||
425b145b AM |
9503 | wrel = toc_relocs; |
9504 | for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel) | |
ba761f19 AM |
9505 | if ((skip[rel->r_offset >> 3] |
9506 | & (ref_from_discarded | can_optimize)) == 0) | |
854b41e7 AM |
9507 | { |
9508 | wrel->r_offset = rel->r_offset - skip[rel->r_offset >> 3]; | |
9509 | wrel->r_info = rel->r_info; | |
9510 | wrel->r_addend = rel->r_addend; | |
9511 | ++wrel; | |
9512 | } | |
9513 | else if (!dec_dynrel_count (rel->r_info, toc, info, | |
9514 | &local_syms, NULL, NULL)) | |
9515 | goto error_ret; | |
9516 | ||
425b145b AM |
9517 | elf_section_data (toc)->relocs = toc_relocs; |
9518 | toc->reloc_count = wrel - toc_relocs; | |
d4730f92 BS |
9519 | rel_hdr = _bfd_elf_single_rel_hdr (toc); |
9520 | sz = rel_hdr->sh_entsize; | |
9521 | rel_hdr->sh_size = toc->reloc_count * sz; | |
854b41e7 | 9522 | } |
c5614fa4 | 9523 | } |
28be611c AM |
9524 | else if (toc_relocs != NULL |
9525 | && elf_section_data (toc)->relocs != toc_relocs) | |
425b145b | 9526 | free (toc_relocs); |
c5614fa4 AM |
9527 | |
9528 | if (local_syms != NULL | |
9529 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
9530 | { | |
9531 | if (!info->keep_memory) | |
9532 | free (local_syms); | |
9533 | else | |
9534 | symtab_hdr->contents = (unsigned char *) local_syms; | |
9535 | } | |
9536 | free (skip); | |
9537 | } | |
9538 | ||
9539 | return TRUE; | |
9540 | } | |
9541 | ||
1bbe0902 AM |
9542 | /* Return true iff input section I references the TOC using |
9543 | instructions limited to +/-32k offsets. */ | |
9544 | ||
9545 | bfd_boolean | |
9546 | ppc64_elf_has_small_toc_reloc (asection *i) | |
9547 | { | |
9548 | return (is_ppc64_elf (i->owner) | |
9549 | && ppc64_elf_tdata (i->owner)->has_small_toc_reloc); | |
9550 | } | |
9551 | ||
927be08e AM |
9552 | /* Allocate space for one GOT entry. */ |
9553 | ||
9554 | static void | |
9555 | allocate_got (struct elf_link_hash_entry *h, | |
9556 | struct bfd_link_info *info, | |
9557 | struct got_entry *gent) | |
9558 | { | |
9559 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
927be08e AM |
9560 | struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h; |
9561 | int entsize = (gent->tls_type & eh->tls_mask & (TLS_GD | TLS_LD) | |
9562 | ? 16 : 8); | |
9563 | int rentsize = (gent->tls_type & eh->tls_mask & TLS_GD | |
9564 | ? 2 : 1) * sizeof (Elf64_External_Rela); | |
9565 | asection *got = ppc64_elf_tdata (gent->owner)->got; | |
9566 | ||
9567 | gent->got.offset = got->size; | |
9568 | got->size += entsize; | |
9569 | ||
19e08130 | 9570 | if (h->type == STT_GNU_IFUNC) |
927be08e | 9571 | { |
33e44f2e | 9572 | htab->elf.irelplt->size += rentsize; |
19e08130 | 9573 | htab->got_reli_size += rentsize; |
927be08e | 9574 | } |
f15d0b54 AM |
9575 | else if (((bfd_link_pic (info) |
9576 | && !((gent->tls_type & TLS_TPREL) != 0 | |
9577 | && bfd_link_executable (info) | |
9578 | && SYMBOL_REFERENCES_LOCAL (info, h))) | |
f0158f44 AM |
9579 | || (htab->elf.dynamic_sections_created |
9580 | && h->dynindx != -1 | |
9581 | && !SYMBOL_REFERENCES_LOCAL (info, h))) | |
21d68fcd | 9582 | && !UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)) |
927be08e | 9583 | { |
19e08130 | 9584 | asection *relgot = ppc64_elf_tdata (gent->owner)->relgot; |
927be08e | 9585 | relgot->size += rentsize; |
927be08e AM |
9586 | } |
9587 | } | |
9588 | ||
7865406b AM |
9589 | /* This function merges got entries in the same toc group. */ |
9590 | ||
9591 | static void | |
9592 | merge_got_entries (struct got_entry **pent) | |
9593 | { | |
9594 | struct got_entry *ent, *ent2; | |
9595 | ||
9596 | for (ent = *pent; ent != NULL; ent = ent->next) | |
9597 | if (!ent->is_indirect) | |
9598 | for (ent2 = ent->next; ent2 != NULL; ent2 = ent2->next) | |
9599 | if (!ent2->is_indirect | |
9600 | && ent2->addend == ent->addend | |
9601 | && ent2->tls_type == ent->tls_type | |
9602 | && elf_gp (ent2->owner) == elf_gp (ent->owner)) | |
9603 | { | |
9604 | ent2->is_indirect = TRUE; | |
9605 | ent2->got.ent = ent; | |
9606 | } | |
9607 | } | |
9608 | ||
46434633 | 9609 | /* If H is undefined, make it dynamic if that makes sense. */ |
f0158f44 AM |
9610 | |
9611 | static bfd_boolean | |
46434633 AM |
9612 | ensure_undef_dynamic (struct bfd_link_info *info, |
9613 | struct elf_link_hash_entry *h) | |
f0158f44 AM |
9614 | { |
9615 | struct elf_link_hash_table *htab = elf_hash_table (info); | |
9616 | ||
9617 | if (htab->dynamic_sections_created | |
46434633 AM |
9618 | && ((info->dynamic_undefined_weak != 0 |
9619 | && h->root.type == bfd_link_hash_undefweak) | |
9620 | || h->root.type == bfd_link_hash_undefined) | |
f0158f44 AM |
9621 | && h->dynindx == -1 |
9622 | && !h->forced_local | |
9623 | && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT) | |
9624 | return bfd_elf_link_record_dynamic_symbol (info, h); | |
9625 | return TRUE; | |
9626 | } | |
9627 | ||
65f38f15 AM |
9628 | /* Allocate space in .plt, .got and associated reloc sections for |
9629 | dynamic relocs. */ | |
5bd4f169 | 9630 | |
b34976b6 | 9631 | static bfd_boolean |
4ce794b7 | 9632 | allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf) |
5bd4f169 | 9633 | { |
65f38f15 AM |
9634 | struct bfd_link_info *info; |
9635 | struct ppc_link_hash_table *htab; | |
5bd4f169 | 9636 | asection *s; |
65f38f15 | 9637 | struct ppc_link_hash_entry *eh; |
0b8bcf0d | 9638 | struct got_entry **pgent, *gent; |
5bd4f169 | 9639 | |
e92d460e | 9640 | if (h->root.type == bfd_link_hash_indirect) |
b34976b6 | 9641 | return TRUE; |
5bd4f169 | 9642 | |
65f38f15 AM |
9643 | info = (struct bfd_link_info *) inf; |
9644 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
9645 | if (htab == NULL) |
9646 | return FALSE; | |
5bd4f169 | 9647 | |
951fd09b AM |
9648 | eh = (struct ppc_link_hash_entry *) h; |
9649 | /* Run through the TLS GD got entries first if we're changing them | |
9650 | to TPREL. */ | |
e7b938ca | 9651 | if ((eh->tls_mask & TLS_TPRELGD) != 0) |
951fd09b AM |
9652 | for (gent = h->got.glist; gent != NULL; gent = gent->next) |
9653 | if (gent->got.refcount > 0 | |
9654 | && (gent->tls_type & TLS_GD) != 0) | |
9655 | { | |
9656 | /* This was a GD entry that has been converted to TPREL. If | |
9657 | there happens to be a TPREL entry we can use that one. */ | |
9658 | struct got_entry *ent; | |
9659 | for (ent = h->got.glist; ent != NULL; ent = ent->next) | |
9660 | if (ent->got.refcount > 0 | |
9661 | && (ent->tls_type & TLS_TPREL) != 0 | |
e717da7e AM |
9662 | && ent->addend == gent->addend |
9663 | && ent->owner == gent->owner) | |
951fd09b AM |
9664 | { |
9665 | gent->got.refcount = 0; | |
9666 | break; | |
9667 | } | |
9668 | ||
9669 | /* If not, then we'll be using our own TPREL entry. */ | |
9670 | if (gent->got.refcount != 0) | |
9671 | gent->tls_type = TLS_TLS | TLS_TPREL; | |
9672 | } | |
9673 | ||
7865406b AM |
9674 | /* Remove any list entry that won't generate a word in the GOT before |
9675 | we call merge_got_entries. Otherwise we risk merging to empty | |
9676 | entries. */ | |
0b8bcf0d AM |
9677 | pgent = &h->got.glist; |
9678 | while ((gent = *pgent) != NULL) | |
411e1bfb | 9679 | if (gent->got.refcount > 0) |
7865406b AM |
9680 | { |
9681 | if ((gent->tls_type & TLS_LD) != 0 | |
9682 | && !h->def_dynamic) | |
9683 | { | |
9684 | ppc64_tlsld_got (gent->owner)->got.refcount += 1; | |
9685 | *pgent = gent->next; | |
9686 | } | |
9687 | else | |
9688 | pgent = &gent->next; | |
9689 | } | |
9690 | else | |
9691 | *pgent = gent->next; | |
9692 | ||
9693 | if (!htab->do_multi_toc) | |
9694 | merge_got_entries (&h->got.glist); | |
9695 | ||
9696 | for (gent = h->got.glist; gent != NULL; gent = gent->next) | |
9697 | if (!gent->is_indirect) | |
411e1bfb | 9698 | { |
46434633 AM |
9699 | /* Make sure this symbol is output as a dynamic symbol. */ |
9700 | if (!ensure_undef_dynamic (info, h)) | |
f0158f44 | 9701 | return FALSE; |
65f38f15 | 9702 | |
0c8d6e5c | 9703 | if (!is_ppc64_elf (gent->owner)) |
927be08e | 9704 | abort (); |
0ffa91dd | 9705 | |
927be08e | 9706 | allocate_got (h, info, gent); |
411e1bfb | 9707 | } |
65f38f15 | 9708 | |
954b63d4 AM |
9709 | /* If no dynamic sections we can't have dynamic relocs, except for |
9710 | IFUNCs which are handled even in static executables. */ | |
8a2058b5 AM |
9711 | if (!htab->elf.dynamic_sections_created |
9712 | && h->type != STT_GNU_IFUNC) | |
9713 | eh->dyn_relocs = NULL; | |
9714 | ||
529fe20e AM |
9715 | /* Discard relocs on undefined symbols that must be local. */ |
9716 | else if (h->root.type == bfd_link_hash_undefined | |
9717 | && ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) | |
9718 | eh->dyn_relocs = NULL; | |
9719 | ||
954b63d4 AM |
9720 | /* Also discard relocs on undefined weak syms with non-default |
9721 | visibility, or when dynamic_undefined_weak says so. */ | |
21d68fcd | 9722 | else if (UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)) |
954b63d4 AM |
9723 | eh->dyn_relocs = NULL; |
9724 | ||
8a2058b5 | 9725 | if (eh->dyn_relocs != NULL) |
65f38f15 | 9726 | { |
8a2058b5 AM |
9727 | struct elf_dyn_relocs *p, **pp; |
9728 | ||
57e7d118 AM |
9729 | /* In the shared -Bsymbolic case, discard space allocated for |
9730 | dynamic pc-relative relocs against symbols which turn out to | |
9731 | be defined in regular objects. For the normal shared case, | |
9732 | discard space for relocs that have become local due to symbol | |
9733 | visibility changes. */ | |
9734 | ||
9735 | if (bfd_link_pic (info)) | |
65f38f15 | 9736 | { |
57e7d118 AM |
9737 | /* Relocs that use pc_count are those that appear on a call |
9738 | insn, or certain REL relocs (see must_be_dyn_reloc) that | |
9739 | can be generated via assembly. We want calls to | |
9740 | protected symbols to resolve directly to the function | |
9741 | rather than going via the plt. If people want function | |
9742 | pointer comparisons to work as expected then they should | |
9743 | avoid writing weird assembly. */ | |
9744 | if (SYMBOL_CALLS_LOCAL (info, h)) | |
9745 | { | |
57e7d118 AM |
9746 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) |
9747 | { | |
9748 | p->count -= p->pc_count; | |
9749 | p->pc_count = 0; | |
9750 | if (p->count == 0) | |
9751 | *pp = p->next; | |
9752 | else | |
9753 | pp = &p->next; | |
9754 | } | |
9755 | } | |
65f38f15 | 9756 | |
954b63d4 | 9757 | if (eh->dyn_relocs != NULL) |
5bd4f169 | 9758 | { |
46434633 AM |
9759 | /* Make sure this symbol is output as a dynamic symbol. */ |
9760 | if (!ensure_undef_dynamic (info, h)) | |
f0158f44 | 9761 | return FALSE; |
5bd4f169 | 9762 | } |
65f38f15 | 9763 | } |
529fe20e | 9764 | else if (ELIMINATE_COPY_RELOCS && h->type != STT_GNU_IFUNC) |
57e7d118 | 9765 | { |
8a2058b5 | 9766 | /* For the non-pic case, discard space for relocs against |
57e7d118 AM |
9767 | symbols which turn out to need copy relocs or are not |
9768 | dynamic. */ | |
529fe20e AM |
9769 | if (h->dynamic_adjusted |
9770 | && !h->def_regular | |
9771 | && !ELF_COMMON_DEF_P (h)) | |
f0158f44 | 9772 | { |
46434633 AM |
9773 | /* Make sure this symbol is output as a dynamic symbol. */ |
9774 | if (!ensure_undef_dynamic (info, h)) | |
f0158f44 | 9775 | return FALSE; |
dfbb6ac9 | 9776 | |
f0158f44 AM |
9777 | if (h->dynindx == -1) |
9778 | eh->dyn_relocs = NULL; | |
9779 | } | |
9780 | else | |
8a2058b5 | 9781 | eh->dyn_relocs = NULL; |
57e7d118 AM |
9782 | } |
9783 | ||
9784 | /* Finally, allocate space. */ | |
9785 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
9786 | { | |
9787 | asection *sreloc = elf_section_data (p->sec)->sreloc; | |
9788 | if (eh->elf.type == STT_GNU_IFUNC) | |
9789 | sreloc = htab->elf.irelplt; | |
9790 | sreloc->size += p->count * sizeof (Elf64_External_Rela); | |
dfbb6ac9 | 9791 | } |
65f38f15 | 9792 | } |
57e7d118 AM |
9793 | |
9794 | if ((htab->elf.dynamic_sections_created | |
f0158f44 | 9795 | && h->dynindx != -1) |
57e7d118 | 9796 | || h->type == STT_GNU_IFUNC) |
65f38f15 | 9797 | { |
57e7d118 AM |
9798 | struct plt_entry *pent; |
9799 | bfd_boolean doneone = FALSE; | |
9800 | for (pent = h->plt.plist; pent != NULL; pent = pent->next) | |
9801 | if (pent->plt.refcount > 0) | |
9802 | { | |
9803 | if (!htab->elf.dynamic_sections_created | |
9804 | || h->dynindx == -1) | |
9805 | { | |
9806 | s = htab->elf.iplt; | |
9807 | pent->plt.offset = s->size; | |
9808 | s->size += PLT_ENTRY_SIZE (htab); | |
9809 | s = htab->elf.irelplt; | |
9810 | } | |
9811 | else | |
9812 | { | |
9813 | /* If this is the first .plt entry, make room for the special | |
9814 | first entry. */ | |
9815 | s = htab->elf.splt; | |
9816 | if (s->size == 0) | |
9817 | s->size += PLT_INITIAL_ENTRY_SIZE (htab); | |
65f38f15 | 9818 | |
57e7d118 | 9819 | pent->plt.offset = s->size; |
65f38f15 | 9820 | |
57e7d118 AM |
9821 | /* Make room for this entry. */ |
9822 | s->size += PLT_ENTRY_SIZE (htab); | |
65f38f15 | 9823 | |
57e7d118 AM |
9824 | /* Make room for the .glink code. */ |
9825 | s = htab->glink; | |
9826 | if (s->size == 0) | |
9e390558 | 9827 | s->size += GLINK_PLTRESOLVE_SIZE (htab); |
57e7d118 AM |
9828 | if (htab->opd_abi) |
9829 | { | |
9830 | /* We need bigger stubs past index 32767. */ | |
9e390558 | 9831 | if (s->size >= GLINK_PLTRESOLVE_SIZE (htab) + 32768*2*4) |
57e7d118 AM |
9832 | s->size += 4; |
9833 | s->size += 2*4; | |
9834 | } | |
9835 | else | |
9836 | s->size += 4; | |
65f38f15 | 9837 | |
57e7d118 AM |
9838 | /* We also need to make an entry in the .rela.plt section. */ |
9839 | s = htab->elf.srelplt; | |
9840 | } | |
9841 | s->size += sizeof (Elf64_External_Rela); | |
9842 | doneone = TRUE; | |
9843 | } | |
9844 | else | |
9845 | pent->plt.offset = (bfd_vma) -1; | |
9846 | if (!doneone) | |
9847 | { | |
9848 | h->plt.plist = NULL; | |
9849 | h->needs_plt = 0; | |
9850 | } | |
65f38f15 | 9851 | } |
57e7d118 | 9852 | else |
65f38f15 | 9853 | { |
57e7d118 AM |
9854 | h->plt.plist = NULL; |
9855 | h->needs_plt = 0; | |
65f38f15 AM |
9856 | } |
9857 | ||
b34976b6 | 9858 | return TRUE; |
65f38f15 AM |
9859 | } |
9860 | ||
9e390558 AM |
9861 | #define PPC_LO(v) ((v) & 0xffff) |
9862 | #define PPC_HI(v) (((v) >> 16) & 0xffff) | |
9863 | #define PPC_HA(v) PPC_HI ((v) + 0x8000) | |
9864 | ||
a345bc8d AM |
9865 | /* Called via elf_link_hash_traverse from ppc64_elf_size_dynamic_sections |
9866 | to set up space for global entry stubs. These are put in glink, | |
9867 | after the branch table. */ | |
65f38f15 | 9868 | |
b34976b6 | 9869 | static bfd_boolean |
a345bc8d | 9870 | size_global_entry_stubs (struct elf_link_hash_entry *h, void *inf) |
65f38f15 | 9871 | { |
a345bc8d AM |
9872 | struct bfd_link_info *info; |
9873 | struct ppc_link_hash_table *htab; | |
9874 | struct plt_entry *pent; | |
9e390558 | 9875 | asection *s, *plt; |
65f38f15 | 9876 | |
a345bc8d AM |
9877 | if (h->root.type == bfd_link_hash_indirect) |
9878 | return TRUE; | |
65f38f15 | 9879 | |
a345bc8d AM |
9880 | if (!h->pointer_equality_needed) |
9881 | return TRUE; | |
65f38f15 | 9882 | |
a345bc8d AM |
9883 | if (h->def_regular) |
9884 | return TRUE; | |
65f38f15 | 9885 | |
a345bc8d AM |
9886 | info = inf; |
9887 | htab = ppc_hash_table (info); | |
9888 | if (htab == NULL) | |
9889 | return FALSE; | |
9890 | ||
9e390558 AM |
9891 | s = htab->global_entry; |
9892 | plt = htab->elf.splt; | |
a345bc8d AM |
9893 | for (pent = h->plt.plist; pent != NULL; pent = pent->next) |
9894 | if (pent->plt.offset != (bfd_vma) -1 | |
9895 | && pent->addend == 0) | |
9896 | { | |
afe397ea AM |
9897 | /* For ELFv2, if this symbol is not defined in a regular file |
9898 | and we are not generating a shared library or pie, then we | |
9899 | need to define the symbol in the executable on a call stub. | |
9900 | This is to avoid text relocations. */ | |
9e390558 AM |
9901 | bfd_vma off, stub_align, stub_off, stub_size; |
9902 | unsigned int align_power; | |
9903 | ||
9904 | stub_size = 16; | |
9905 | stub_off = s->size; | |
9906 | if (htab->params->plt_stub_align >= 0) | |
9907 | align_power = htab->params->plt_stub_align; | |
9908 | else | |
9909 | align_power = -htab->params->plt_stub_align; | |
9910 | /* Setting section alignment is delayed until we know it is | |
9911 | non-empty. Otherwise the .text output section will be | |
9912 | aligned at least to plt_stub_align even when no global | |
9913 | entry stubs are needed. */ | |
9914 | if (s->alignment_power < align_power) | |
9915 | s->alignment_power = align_power; | |
9916 | stub_align = (bfd_vma) 1 << align_power; | |
9917 | if (htab->params->plt_stub_align >= 0 | |
9918 | || ((((stub_off + stub_size - 1) & -stub_align) | |
9919 | - (stub_off & -stub_align)) | |
9920 | > ((stub_size - 1) & -stub_align))) | |
9921 | stub_off = (stub_off + stub_align - 1) & -stub_align; | |
9922 | off = pent->plt.offset + plt->output_offset + plt->output_section->vma; | |
9923 | off -= stub_off + s->output_offset + s->output_section->vma; | |
9924 | /* Note that for --plt-stub-align negative we have a possible | |
9925 | dependency between stub offset and size. Break that | |
9926 | dependency by assuming the max stub size when calculating | |
9927 | the stub offset. */ | |
9928 | if (PPC_HA (off) == 0) | |
9929 | stub_size -= 4; | |
8a2058b5 | 9930 | h->root.type = bfd_link_hash_defined; |
afe397ea | 9931 | h->root.u.def.section = s; |
9e390558 AM |
9932 | h->root.u.def.value = stub_off; |
9933 | s->size = stub_off + stub_size; | |
a345bc8d AM |
9934 | break; |
9935 | } | |
9936 | return TRUE; | |
9937 | } | |
9938 | ||
9939 | /* Set DF_TEXTREL if we find any dynamic relocs that apply to | |
9940 | read-only sections. */ | |
9941 | ||
9942 | static bfd_boolean | |
98bbb1b8 | 9943 | maybe_set_textrel (struct elf_link_hash_entry *h, void *inf) |
a345bc8d | 9944 | { |
98bbb1b8 AM |
9945 | asection *sec; |
9946 | ||
a345bc8d AM |
9947 | if (h->root.type == bfd_link_hash_indirect) |
9948 | return TRUE; | |
9949 | ||
98bbb1b8 AM |
9950 | sec = readonly_dynrelocs (h); |
9951 | if (sec != NULL) | |
a345bc8d | 9952 | { |
98bbb1b8 AM |
9953 | struct bfd_link_info *info = (struct bfd_link_info *) inf; |
9954 | ||
9955 | info->flags |= DF_TEXTREL; | |
9956 | info->callbacks->minfo | |
c1c8c1ef | 9957 | (_("%pB: dynamic relocation against `%pT' in read-only section `%pA'\n"), |
63c1f59d | 9958 | sec->owner, h->root.root.string, sec); |
a345bc8d AM |
9959 | |
9960 | /* Not an error, just cut short the traversal. */ | |
9961 | return FALSE; | |
65f38f15 | 9962 | } |
b34976b6 | 9963 | return TRUE; |
65f38f15 AM |
9964 | } |
9965 | ||
9966 | /* Set the sizes of the dynamic sections. */ | |
9967 | ||
b34976b6 | 9968 | static bfd_boolean |
ee67d69a | 9969 | ppc64_elf_size_dynamic_sections (bfd *output_bfd, |
4ce794b7 | 9970 | struct bfd_link_info *info) |
65f38f15 AM |
9971 | { |
9972 | struct ppc_link_hash_table *htab; | |
9973 | bfd *dynobj; | |
9974 | asection *s; | |
b34976b6 | 9975 | bfd_boolean relocs; |
65f38f15 | 9976 | bfd *ibfd; |
7865406b | 9977 | struct got_entry *first_tlsld; |
65f38f15 AM |
9978 | |
9979 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
9980 | if (htab == NULL) |
9981 | return FALSE; | |
9982 | ||
65f38f15 AM |
9983 | dynobj = htab->elf.dynobj; |
9984 | if (dynobj == NULL) | |
9985 | abort (); | |
9986 | ||
9987 | if (htab->elf.dynamic_sections_created) | |
9988 | { | |
9989 | /* Set the contents of the .interp section to the interpreter. */ | |
9b8b325a | 9990 | if (bfd_link_executable (info) && !info->nointerp) |
65f38f15 | 9991 | { |
3d4d4302 | 9992 | s = bfd_get_linker_section (dynobj, ".interp"); |
65f38f15 AM |
9993 | if (s == NULL) |
9994 | abort (); | |
eea6121a | 9995 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; |
65f38f15 AM |
9996 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; |
9997 | } | |
9998 | } | |
9999 | ||
10000 | /* Set up .got offsets for local syms, and space for local dynamic | |
10001 | relocs. */ | |
c72f2fb2 | 10002 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
65f38f15 | 10003 | { |
411e1bfb AM |
10004 | struct got_entry **lgot_ents; |
10005 | struct got_entry **end_lgot_ents; | |
e054468f AM |
10006 | struct plt_entry **local_plt; |
10007 | struct plt_entry **end_local_plt; | |
f961d9dd | 10008 | unsigned char *lgot_masks; |
65f38f15 AM |
10009 | bfd_size_type locsymcount; |
10010 | Elf_Internal_Shdr *symtab_hdr; | |
65f38f15 | 10011 | |
0c8d6e5c | 10012 | if (!is_ppc64_elf (ibfd)) |
65f38f15 AM |
10013 | continue; |
10014 | ||
10015 | for (s = ibfd->sections; s != NULL; s = s->next) | |
10016 | { | |
19e08130 | 10017 | struct ppc_dyn_relocs *p; |
65f38f15 | 10018 | |
6edfbbad | 10019 | for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next) |
65f38f15 | 10020 | { |
ec338859 AM |
10021 | if (!bfd_is_abs_section (p->sec) |
10022 | && bfd_is_abs_section (p->sec->output_section)) | |
10023 | { | |
10024 | /* Input section has been discarded, either because | |
10025 | it is a copy of a linkonce section or due to | |
10026 | linker script /DISCARD/, so we'll be discarding | |
10027 | the relocs too. */ | |
10028 | } | |
248866a8 | 10029 | else if (p->count != 0) |
ec338859 | 10030 | { |
19e08130 AM |
10031 | asection *srel = elf_section_data (p->sec)->sreloc; |
10032 | if (p->ifunc) | |
33e44f2e | 10033 | srel = htab->elf.irelplt; |
eea6121a | 10034 | srel->size += p->count * sizeof (Elf64_External_Rela); |
248866a8 AM |
10035 | if ((p->sec->output_section->flags & SEC_READONLY) != 0) |
10036 | info->flags |= DF_TEXTREL; | |
ec338859 | 10037 | } |
65f38f15 AM |
10038 | } |
10039 | } | |
10040 | ||
411e1bfb AM |
10041 | lgot_ents = elf_local_got_ents (ibfd); |
10042 | if (!lgot_ents) | |
65f38f15 AM |
10043 | continue; |
10044 | ||
0ffa91dd | 10045 | symtab_hdr = &elf_symtab_hdr (ibfd); |
65f38f15 | 10046 | locsymcount = symtab_hdr->sh_info; |
411e1bfb | 10047 | end_lgot_ents = lgot_ents + locsymcount; |
e054468f AM |
10048 | local_plt = (struct plt_entry **) end_lgot_ents; |
10049 | end_local_plt = local_plt + locsymcount; | |
f961d9dd | 10050 | lgot_masks = (unsigned char *) end_local_plt; |
e717da7e | 10051 | s = ppc64_elf_tdata (ibfd)->got; |
e7b938ca | 10052 | for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks) |
65f38f15 | 10053 | { |
0b8bcf0d | 10054 | struct got_entry **pent, *ent; |
411e1bfb | 10055 | |
0b8bcf0d AM |
10056 | pent = lgot_ents; |
10057 | while ((ent = *pent) != NULL) | |
411e1bfb AM |
10058 | if (ent->got.refcount > 0) |
10059 | { | |
e7b938ca | 10060 | if ((ent->tls_type & *lgot_masks & TLS_LD) != 0) |
411e1bfb | 10061 | { |
927be08e | 10062 | ppc64_tlsld_got (ibfd)->got.refcount += 1; |
0b8bcf0d | 10063 | *pent = ent->next; |
411e1bfb AM |
10064 | } |
10065 | else | |
10066 | { | |
19e08130 AM |
10067 | unsigned int ent_size = 8; |
10068 | unsigned int rel_size = sizeof (Elf64_External_Rela); | |
10069 | ||
eea6121a | 10070 | ent->got.offset = s->size; |
e7b938ca | 10071 | if ((ent->tls_type & *lgot_masks & TLS_GD) != 0) |
927be08e | 10072 | { |
19e08130 AM |
10073 | ent_size *= 2; |
10074 | rel_size *= 2; | |
10075 | } | |
10076 | s->size += ent_size; | |
10077 | if ((*lgot_masks & PLT_IFUNC) != 0) | |
10078 | { | |
33e44f2e | 10079 | htab->elf.irelplt->size += rel_size; |
19e08130 AM |
10080 | htab->got_reli_size += rel_size; |
10081 | } | |
f15d0b54 AM |
10082 | else if (bfd_link_pic (info) |
10083 | && !((ent->tls_type & TLS_TPREL) != 0 | |
10084 | && bfd_link_executable (info))) | |
19e08130 AM |
10085 | { |
10086 | asection *srel = ppc64_elf_tdata (ibfd)->relgot; | |
10087 | srel->size += rel_size; | |
927be08e | 10088 | } |
0b8bcf0d | 10089 | pent = &ent->next; |
411e1bfb AM |
10090 | } |
10091 | } | |
10092 | else | |
0b8bcf0d | 10093 | *pent = ent->next; |
65f38f15 | 10094 | } |
e054468f AM |
10095 | |
10096 | /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */ | |
10097 | for (; local_plt < end_local_plt; ++local_plt) | |
10098 | { | |
10099 | struct plt_entry *ent; | |
10100 | ||
10101 | for (ent = *local_plt; ent != NULL; ent = ent->next) | |
10102 | if (ent->plt.refcount > 0) | |
10103 | { | |
33e44f2e | 10104 | s = htab->elf.iplt; |
e054468f | 10105 | ent->plt.offset = s->size; |
b9e5796b | 10106 | s->size += PLT_ENTRY_SIZE (htab); |
e054468f | 10107 | |
33e44f2e | 10108 | htab->elf.irelplt->size += sizeof (Elf64_External_Rela); |
e054468f AM |
10109 | } |
10110 | else | |
10111 | ent->plt.offset = (bfd_vma) -1; | |
10112 | } | |
65f38f15 AM |
10113 | } |
10114 | ||
10115 | /* Allocate global sym .plt and .got entries, and space for global | |
10116 | sym dynamic relocs. */ | |
4ce794b7 | 10117 | elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info); |
a345bc8d | 10118 | |
0e1862bb | 10119 | if (!htab->opd_abi && !bfd_link_pic (info)) |
a345bc8d | 10120 | elf_link_hash_traverse (&htab->elf, size_global_entry_stubs, info); |
65f38f15 | 10121 | |
7865406b | 10122 | first_tlsld = NULL; |
c72f2fb2 | 10123 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
102890f0 | 10124 | { |
7865406b AM |
10125 | struct got_entry *ent; |
10126 | ||
0c8d6e5c | 10127 | if (!is_ppc64_elf (ibfd)) |
102890f0 AM |
10128 | continue; |
10129 | ||
7865406b AM |
10130 | ent = ppc64_tlsld_got (ibfd); |
10131 | if (ent->got.refcount > 0) | |
102890f0 | 10132 | { |
7865406b | 10133 | if (!htab->do_multi_toc && first_tlsld != NULL) |
102890f0 | 10134 | { |
7865406b AM |
10135 | ent->is_indirect = TRUE; |
10136 | ent->got.ent = first_tlsld; | |
10137 | } | |
10138 | else | |
10139 | { | |
10140 | if (first_tlsld == NULL) | |
10141 | first_tlsld = ent; | |
10142 | s = ppc64_elf_tdata (ibfd)->got; | |
10143 | ent->got.offset = s->size; | |
10144 | ent->owner = ibfd; | |
10145 | s->size += 16; | |
0e1862bb | 10146 | if (bfd_link_pic (info)) |
7865406b AM |
10147 | { |
10148 | asection *srel = ppc64_elf_tdata (ibfd)->relgot; | |
10149 | srel->size += sizeof (Elf64_External_Rela); | |
10150 | } | |
102890f0 AM |
10151 | } |
10152 | } | |
10153 | else | |
7865406b | 10154 | ent->got.offset = (bfd_vma) -1; |
102890f0 AM |
10155 | } |
10156 | ||
65f38f15 AM |
10157 | /* We now have determined the sizes of the various dynamic sections. |
10158 | Allocate memory for them. */ | |
b34976b6 | 10159 | relocs = FALSE; |
65f38f15 AM |
10160 | for (s = dynobj->sections; s != NULL; s = s->next) |
10161 | { | |
10162 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
10163 | continue; | |
10164 | ||
4ce794b7 | 10165 | if (s == htab->brlt || s == htab->relbrlt) |
721956f4 AM |
10166 | /* These haven't been allocated yet; don't strip. */ |
10167 | continue; | |
33e44f2e AM |
10168 | else if (s == htab->elf.sgot |
10169 | || s == htab->elf.splt | |
10170 | || s == htab->elf.iplt | |
c456f082 | 10171 | || s == htab->glink |
9e390558 | 10172 | || s == htab->global_entry |
5474d94f AM |
10173 | || s == htab->elf.sdynbss |
10174 | || s == htab->elf.sdynrelro) | |
65f38f15 AM |
10175 | { |
10176 | /* Strip this section if we don't need it; see the | |
10177 | comment below. */ | |
5bd4f169 | 10178 | } |
58d180e8 AM |
10179 | else if (s == htab->glink_eh_frame) |
10180 | { | |
10181 | if (!bfd_is_abs_section (s->output_section)) | |
10182 | /* Not sized yet. */ | |
10183 | continue; | |
10184 | } | |
70cc837d | 10185 | else if (CONST_STRNEQ (s->name, ".rela")) |
5bd4f169 | 10186 | { |
c456f082 | 10187 | if (s->size != 0) |
5bd4f169 | 10188 | { |
33e44f2e | 10189 | if (s != htab->elf.srelplt) |
b34976b6 | 10190 | relocs = TRUE; |
5bd4f169 AM |
10191 | |
10192 | /* We use the reloc_count field as a counter if we need | |
10193 | to copy relocs into the output file. */ | |
10194 | s->reloc_count = 0; | |
10195 | } | |
10196 | } | |
65f38f15 | 10197 | else |
5bd4f169 AM |
10198 | { |
10199 | /* It's not one of our sections, so don't allocate space. */ | |
10200 | continue; | |
10201 | } | |
10202 | ||
eea6121a | 10203 | if (s->size == 0) |
5bd4f169 | 10204 | { |
c456f082 AM |
10205 | /* If we don't need this section, strip it from the |
10206 | output file. This is mostly to handle .rela.bss and | |
10207 | .rela.plt. We must create both sections in | |
10208 | create_dynamic_sections, because they must be created | |
10209 | before the linker maps input sections to output | |
10210 | sections. The linker does that before | |
10211 | adjust_dynamic_symbol is called, and it is that | |
10212 | function which decides whether anything needs to go | |
10213 | into these sections. */ | |
8423293d | 10214 | s->flags |= SEC_EXCLUDE; |
5bd4f169 AM |
10215 | continue; |
10216 | } | |
10217 | ||
06bcf541 AM |
10218 | if (bfd_is_abs_section (s->output_section)) |
10219 | _bfd_error_handler (_("warning: discarding dynamic section %s"), | |
10220 | s->name); | |
10221 | ||
c456f082 | 10222 | if ((s->flags & SEC_HAS_CONTENTS) == 0) |
5f333394 AM |
10223 | continue; |
10224 | ||
65f38f15 AM |
10225 | /* Allocate memory for the section contents. We use bfd_zalloc |
10226 | here in case unused entries are not reclaimed before the | |
10227 | section's contents are written out. This should not happen, | |
411e1bfb AM |
10228 | but this way if it does we get a R_PPC64_NONE reloc in .rela |
10229 | sections instead of garbage. | |
10230 | We also rely on the section contents being zero when writing | |
5474d94f | 10231 | the GOT and .dynrelro. */ |
eea6121a | 10232 | s->contents = bfd_zalloc (dynobj, s->size); |
65f38f15 | 10233 | if (s->contents == NULL) |
b34976b6 | 10234 | return FALSE; |
5bd4f169 AM |
10235 | } |
10236 | ||
c72f2fb2 | 10237 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
e717da7e | 10238 | { |
0c8d6e5c | 10239 | if (!is_ppc64_elf (ibfd)) |
7b53ace3 AM |
10240 | continue; |
10241 | ||
e717da7e | 10242 | s = ppc64_elf_tdata (ibfd)->got; |
33e44f2e | 10243 | if (s != NULL && s != htab->elf.sgot) |
e717da7e | 10244 | { |
eea6121a | 10245 | if (s->size == 0) |
8423293d | 10246 | s->flags |= SEC_EXCLUDE; |
e717da7e AM |
10247 | else |
10248 | { | |
eea6121a | 10249 | s->contents = bfd_zalloc (ibfd, s->size); |
e717da7e AM |
10250 | if (s->contents == NULL) |
10251 | return FALSE; | |
10252 | } | |
10253 | } | |
10254 | s = ppc64_elf_tdata (ibfd)->relgot; | |
10255 | if (s != NULL) | |
10256 | { | |
eea6121a | 10257 | if (s->size == 0) |
8423293d | 10258 | s->flags |= SEC_EXCLUDE; |
e717da7e AM |
10259 | else |
10260 | { | |
eea6121a | 10261 | s->contents = bfd_zalloc (ibfd, s->size); |
e717da7e AM |
10262 | if (s->contents == NULL) |
10263 | return FALSE; | |
10264 | relocs = TRUE; | |
10265 | s->reloc_count = 0; | |
10266 | } | |
10267 | } | |
10268 | } | |
10269 | ||
e86ce104 | 10270 | if (htab->elf.dynamic_sections_created) |
5bd4f169 | 10271 | { |
e8910a83 AM |
10272 | bfd_boolean tls_opt; |
10273 | ||
5bd4f169 AM |
10274 | /* Add some entries to the .dynamic section. We fill in the |
10275 | values later, in ppc64_elf_finish_dynamic_sections, but we | |
10276 | must add the entries now so that we get the correct size for | |
10277 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
10278 | dynamic linker and used by the debugger. */ | |
dc810e39 | 10279 | #define add_dynamic_entry(TAG, VAL) \ |
5a580b3a | 10280 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) |
dc810e39 | 10281 | |
0e1862bb | 10282 | if (bfd_link_executable (info)) |
5bd4f169 | 10283 | { |
dc810e39 | 10284 | if (!add_dynamic_entry (DT_DEBUG, 0)) |
b34976b6 | 10285 | return FALSE; |
5bd4f169 AM |
10286 | } |
10287 | ||
33e44f2e | 10288 | if (htab->elf.splt != NULL && htab->elf.splt->size != 0) |
5bd4f169 | 10289 | { |
dc810e39 AM |
10290 | if (!add_dynamic_entry (DT_PLTGOT, 0) |
10291 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
10292 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
5d1634d7 AM |
10293 | || !add_dynamic_entry (DT_JMPREL, 0) |
10294 | || !add_dynamic_entry (DT_PPC64_GLINK, 0)) | |
b34976b6 | 10295 | return FALSE; |
5bd4f169 AM |
10296 | } |
10297 | ||
ee67d69a | 10298 | if (NO_OPD_RELOCS && abiversion (output_bfd) <= 1) |
19397422 AM |
10299 | { |
10300 | if (!add_dynamic_entry (DT_PPC64_OPD, 0) | |
10301 | || !add_dynamic_entry (DT_PPC64_OPDSZ, 0)) | |
b34976b6 | 10302 | return FALSE; |
19397422 AM |
10303 | } |
10304 | ||
7c9cf415 | 10305 | tls_opt = (htab->params->tls_get_addr_opt |
e8910a83 AM |
10306 | && htab->tls_get_addr_fd != NULL |
10307 | && htab->tls_get_addr_fd->elf.plt.plist != NULL); | |
10308 | if (tls_opt || !htab->opd_abi) | |
10309 | { | |
10310 | if (!add_dynamic_entry (DT_PPC64_OPT, tls_opt ? PPC64_OPT_TLS : 0)) | |
10311 | return FALSE; | |
10312 | } | |
a7f2871e | 10313 | |
5bd4f169 AM |
10314 | if (relocs) |
10315 | { | |
dc810e39 AM |
10316 | if (!add_dynamic_entry (DT_RELA, 0) |
10317 | || !add_dynamic_entry (DT_RELASZ, 0) | |
10318 | || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela))) | |
b34976b6 | 10319 | return FALSE; |
5bd4f169 | 10320 | |
65f38f15 AM |
10321 | /* If any dynamic relocs apply to a read-only section, |
10322 | then we need a DT_TEXTREL entry. */ | |
248866a8 | 10323 | if ((info->flags & DF_TEXTREL) == 0) |
a345bc8d | 10324 | elf_link_hash_traverse (&htab->elf, maybe_set_textrel, info); |
5bd4f169 | 10325 | |
65f38f15 | 10326 | if ((info->flags & DF_TEXTREL) != 0) |
5bd4f169 | 10327 | { |
65f38f15 | 10328 | if (!add_dynamic_entry (DT_TEXTREL, 0)) |
b34976b6 | 10329 | return FALSE; |
5bd4f169 | 10330 | } |
5bd4f169 | 10331 | } |
5bd4f169 | 10332 | } |
65f38f15 | 10333 | #undef add_dynamic_entry |
5bd4f169 | 10334 | |
b34976b6 | 10335 | return TRUE; |
5bd4f169 AM |
10336 | } |
10337 | ||
a345bc8d AM |
10338 | /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */ |
10339 | ||
10340 | static bfd_boolean | |
10341 | ppc64_elf_hash_symbol (struct elf_link_hash_entry *h) | |
10342 | { | |
10343 | if (h->plt.plist != NULL | |
10344 | && !h->def_regular | |
10345 | && !h->pointer_equality_needed) | |
10346 | return FALSE; | |
10347 | ||
10348 | return _bfd_elf_hash_symbol (h); | |
10349 | } | |
10350 | ||
721956f4 | 10351 | /* Determine the type of stub needed, if any, for a call. */ |
5bd4f169 | 10352 | |
4ce794b7 AM |
10353 | static inline enum ppc_stub_type |
10354 | ppc_type_of_stub (asection *input_sec, | |
10355 | const Elf_Internal_Rela *rel, | |
10356 | struct ppc_link_hash_entry **hash, | |
e054468f | 10357 | struct plt_entry **plt_ent, |
6911b7dc AM |
10358 | bfd_vma destination, |
10359 | unsigned long local_off) | |
5bd4f169 | 10360 | { |
721956f4 AM |
10361 | struct ppc_link_hash_entry *h = *hash; |
10362 | bfd_vma location; | |
10363 | bfd_vma branch_offset; | |
10364 | bfd_vma max_branch_offset; | |
4ce794b7 | 10365 | enum elf_ppc64_reloc_type r_type; |
5bd4f169 | 10366 | |
721956f4 AM |
10367 | if (h != NULL) |
10368 | { | |
e054468f | 10369 | struct plt_entry *ent; |
7fe2b9a6 | 10370 | struct ppc_link_hash_entry *fdh = h; |
b31867b6 AM |
10371 | if (h->oh != NULL |
10372 | && h->oh->is_func_descriptor) | |
7b8f6675 AM |
10373 | { |
10374 | fdh = ppc_follow_link (h->oh); | |
10375 | *hash = fdh; | |
10376 | } | |
8387904d | 10377 | |
e054468f AM |
10378 | for (ent = fdh->elf.plt.plist; ent != NULL; ent = ent->next) |
10379 | if (ent->addend == rel->r_addend | |
10380 | && ent->plt.offset != (bfd_vma) -1) | |
10381 | { | |
e054468f AM |
10382 | *plt_ent = ent; |
10383 | return ppc_stub_plt_call; | |
10384 | } | |
5bd4f169 | 10385 | |
7fe2b9a6 AM |
10386 | /* Here, we know we don't have a plt entry. If we don't have a |
10387 | either a defined function descriptor or a defined entry symbol | |
10388 | in a regular object file, then it is pointless trying to make | |
10389 | any other type of stub. */ | |
854b41e7 AM |
10390 | if (!is_static_defined (&fdh->elf) |
10391 | && !is_static_defined (&h->elf)) | |
721956f4 | 10392 | return ppc_stub_none; |
5d1634d7 | 10393 | } |
e054468f AM |
10394 | else if (elf_local_got_ents (input_sec->owner) != NULL) |
10395 | { | |
10396 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (input_sec->owner); | |
10397 | struct plt_entry **local_plt = (struct plt_entry **) | |
10398 | elf_local_got_ents (input_sec->owner) + symtab_hdr->sh_info; | |
10399 | unsigned long r_symndx = ELF64_R_SYM (rel->r_info); | |
10400 | ||
10401 | if (local_plt[r_symndx] != NULL) | |
10402 | { | |
10403 | struct plt_entry *ent; | |
10404 | ||
10405 | for (ent = local_plt[r_symndx]; ent != NULL; ent = ent->next) | |
10406 | if (ent->addend == rel->r_addend | |
10407 | && ent->plt.offset != (bfd_vma) -1) | |
10408 | { | |
10409 | *plt_ent = ent; | |
10410 | return ppc_stub_plt_call; | |
10411 | } | |
10412 | } | |
10413 | } | |
5d1634d7 | 10414 | |
721956f4 AM |
10415 | /* Determine where the call point is. */ |
10416 | location = (input_sec->output_offset | |
10417 | + input_sec->output_section->vma | |
10418 | + rel->r_offset); | |
5d1634d7 | 10419 | |
721956f4 AM |
10420 | branch_offset = destination - location; |
10421 | r_type = ELF64_R_TYPE (rel->r_info); | |
5d1634d7 | 10422 | |
721956f4 AM |
10423 | /* Determine if a long branch stub is needed. */ |
10424 | max_branch_offset = 1 << 25; | |
4ce794b7 | 10425 | if (r_type != R_PPC64_REL24) |
721956f4 | 10426 | max_branch_offset = 1 << 15; |
5d1634d7 | 10427 | |
6911b7dc | 10428 | if (branch_offset + max_branch_offset >= 2 * max_branch_offset - local_off) |
721956f4 AM |
10429 | /* We need a stub. Figure out whether a long_branch or plt_branch |
10430 | is needed later. */ | |
10431 | return ppc_stub_long_branch; | |
5d1634d7 | 10432 | |
721956f4 | 10433 | return ppc_stub_none; |
5d1634d7 AM |
10434 | } |
10435 | ||
794e51c0 AM |
10436 | /* With power7 weakly ordered memory model, it is possible for ld.so |
10437 | to update a plt entry in one thread and have another thread see a | |
10438 | stale zero toc entry. To avoid this we need some sort of acquire | |
10439 | barrier in the call stub. One solution is to make the load of the | |
10440 | toc word seem to appear to depend on the load of the function entry | |
10441 | word. Another solution is to test for r2 being zero, and branch to | |
10442 | the appropriate glink entry if so. | |
10443 | ||
10444 | . fake dep barrier compare | |
71a39c98 AM |
10445 | . ld 12,xxx(2) ld 12,xxx(2) |
10446 | . mtctr 12 mtctr 12 | |
10447 | . xor 11,12,12 ld 2,xxx+8(2) | |
794e51c0 AM |
10448 | . add 2,2,11 cmpldi 2,0 |
10449 | . ld 2,xxx+8(2) bnectr+ | |
10450 | . bctr b <glink_entry> | |
10451 | ||
10452 | The solution involving the compare turns out to be faster, so | |
10453 | that's what we use unless the branch won't reach. */ | |
10454 | ||
10455 | #define ALWAYS_USE_FAKE_DEP 0 | |
10456 | #define ALWAYS_EMIT_R2SAVE 0 | |
5d1634d7 | 10457 | |
794e51c0 AM |
10458 | static inline unsigned int |
10459 | plt_stub_size (struct ppc_link_hash_table *htab, | |
10460 | struct ppc_stub_hash_entry *stub_entry, | |
10461 | bfd_vma off) | |
10462 | { | |
b9e5796b AM |
10463 | unsigned size = 12; |
10464 | ||
10465 | if (ALWAYS_EMIT_R2SAVE | |
10466 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
10467 | size += 4; | |
10468 | if (PPC_HA (off) != 0) | |
794e51c0 | 10469 | size += 4; |
b9e5796b AM |
10470 | if (htab->opd_abi) |
10471 | { | |
10472 | size += 4; | |
e7d1c40c | 10473 | if (htab->params->plt_static_chain) |
b9e5796b | 10474 | size += 4; |
bd4d2eaa AM |
10475 | if (htab->params->plt_thread_safe |
10476 | && htab->elf.dynamic_sections_created | |
10477 | && stub_entry->h != NULL | |
10478 | && stub_entry->h->elf.dynindx != -1) | |
b9e5796b | 10479 | size += 8; |
e7d1c40c | 10480 | if (PPC_HA (off + 8 + 8 * htab->params->plt_static_chain) != PPC_HA (off)) |
b9e5796b AM |
10481 | size += 4; |
10482 | } | |
794e51c0 AM |
10483 | if (stub_entry->h != NULL |
10484 | && (stub_entry->h == htab->tls_get_addr_fd | |
10485 | || stub_entry->h == htab->tls_get_addr) | |
7c9cf415 | 10486 | && htab->params->tls_get_addr_opt) |
f378ab09 AM |
10487 | { |
10488 | size += 7 * 4; | |
10489 | if (ALWAYS_EMIT_R2SAVE | |
10490 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
407aa07c | 10491 | size += 6 * 4; |
f378ab09 | 10492 | } |
794e51c0 AM |
10493 | return size; |
10494 | } | |
10495 | ||
2420fff6 AM |
10496 | /* Depending on the sign of plt_stub_align: |
10497 | If positive, return the padding to align to a 2**plt_stub_align | |
10498 | boundary. | |
10499 | If negative, if this stub would cross fewer 2**plt_stub_align | |
10500 | boundaries if we align, then return the padding needed to do so. */ | |
10501 | ||
794e51c0 AM |
10502 | static inline unsigned int |
10503 | plt_stub_pad (struct ppc_link_hash_table *htab, | |
10504 | struct ppc_stub_hash_entry *stub_entry, | |
10505 | bfd_vma plt_off) | |
10506 | { | |
2420fff6 | 10507 | int stub_align; |
794e51c0 | 10508 | unsigned stub_size = plt_stub_size (htab, stub_entry, plt_off); |
6f20ed8a | 10509 | bfd_vma stub_off = stub_entry->group->stub_sec->size; |
794e51c0 | 10510 | |
2420fff6 AM |
10511 | if (htab->params->plt_stub_align >= 0) |
10512 | { | |
10513 | stub_align = 1 << htab->params->plt_stub_align; | |
10514 | if ((stub_off & (stub_align - 1)) != 0) | |
10515 | return stub_align - (stub_off & (stub_align - 1)); | |
10516 | return 0; | |
10517 | } | |
10518 | ||
10519 | stub_align = 1 << -htab->params->plt_stub_align; | |
794e51c0 | 10520 | if (((stub_off + stub_size - 1) & -stub_align) - (stub_off & -stub_align) |
e05fa0ba | 10521 | > ((stub_size - 1) & -stub_align)) |
794e51c0 AM |
10522 | return stub_align - (stub_off & (stub_align - 1)); |
10523 | return 0; | |
10524 | } | |
10525 | ||
10526 | /* Build a .plt call stub. */ | |
10527 | ||
10528 | static inline bfd_byte * | |
10529 | build_plt_stub (struct ppc_link_hash_table *htab, | |
10530 | struct ppc_stub_hash_entry *stub_entry, | |
10531 | bfd_byte *p, bfd_vma offset, Elf_Internal_Rela *r) | |
10532 | { | |
e7d1c40c | 10533 | bfd *obfd = htab->params->stub_bfd; |
b9e5796b | 10534 | bfd_boolean plt_load_toc = htab->opd_abi; |
e7d1c40c | 10535 | bfd_boolean plt_static_chain = htab->params->plt_static_chain; |
bd4d2eaa AM |
10536 | bfd_boolean plt_thread_safe = (htab->params->plt_thread_safe |
10537 | && htab->elf.dynamic_sections_created | |
10538 | && stub_entry->h != NULL | |
10539 | && stub_entry->h->elf.dynindx != -1); | |
794e51c0 AM |
10540 | bfd_boolean use_fake_dep = plt_thread_safe; |
10541 | bfd_vma cmp_branch_off = 0; | |
10542 | ||
10543 | if (!ALWAYS_USE_FAKE_DEP | |
b9e5796b | 10544 | && plt_load_toc |
794e51c0 | 10545 | && plt_thread_safe |
bd4d2eaa AM |
10546 | && !((stub_entry->h == htab->tls_get_addr_fd |
10547 | || stub_entry->h == htab->tls_get_addr) | |
7c9cf415 | 10548 | && htab->params->tls_get_addr_opt)) |
794e51c0 AM |
10549 | { |
10550 | bfd_vma pltoff = stub_entry->plt_ent->plt.offset & ~1; | |
b9e5796b AM |
10551 | bfd_vma pltindex = ((pltoff - PLT_INITIAL_ENTRY_SIZE (htab)) |
10552 | / PLT_ENTRY_SIZE (htab)); | |
9e390558 | 10553 | bfd_vma glinkoff = GLINK_PLTRESOLVE_SIZE (htab) + pltindex * 8; |
794e51c0 AM |
10554 | bfd_vma to, from; |
10555 | ||
68d62958 AM |
10556 | if (pltindex > 32768) |
10557 | glinkoff += (pltindex - 32768) * 4; | |
794e51c0 AM |
10558 | to = (glinkoff |
10559 | + htab->glink->output_offset | |
10560 | + htab->glink->output_section->vma); | |
6f20ed8a | 10561 | from = (p - stub_entry->group->stub_sec->contents |
794e51c0 AM |
10562 | + 4 * (ALWAYS_EMIT_R2SAVE |
10563 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
10564 | + 4 * (PPC_HA (offset) != 0) | |
10565 | + 4 * (PPC_HA (offset + 8 + 8 * plt_static_chain) | |
10566 | != PPC_HA (offset)) | |
10567 | + 4 * (plt_static_chain != 0) | |
10568 | + 20 | |
6f20ed8a AM |
10569 | + stub_entry->group->stub_sec->output_offset |
10570 | + stub_entry->group->stub_sec->output_section->vma); | |
794e51c0 AM |
10571 | cmp_branch_off = to - from; |
10572 | use_fake_dep = cmp_branch_off + (1 << 25) >= (1 << 26); | |
10573 | } | |
10574 | ||
ac2df442 AM |
10575 | if (PPC_HA (offset) != 0) |
10576 | { | |
176a0d42 AM |
10577 | if (r != NULL) |
10578 | { | |
794e51c0 AM |
10579 | if (ALWAYS_EMIT_R2SAVE |
10580 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
10581 | r[0].r_offset += 4; | |
176a0d42 | 10582 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA); |
3b421ab3 | 10583 | r[1].r_offset = r[0].r_offset + 4; |
176a0d42 AM |
10584 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); |
10585 | r[1].r_addend = r[0].r_addend; | |
b9e5796b | 10586 | if (plt_load_toc) |
176a0d42 | 10587 | { |
b9e5796b | 10588 | if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset)) |
c7131b65 | 10589 | { |
b9e5796b AM |
10590 | r[2].r_offset = r[1].r_offset + 4; |
10591 | r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO); | |
10592 | r[2].r_addend = r[0].r_addend; | |
10593 | } | |
10594 | else | |
10595 | { | |
10596 | r[2].r_offset = r[1].r_offset + 8 + 8 * use_fake_dep; | |
10597 | r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); | |
10598 | r[2].r_addend = r[0].r_addend + 8; | |
10599 | if (plt_static_chain) | |
10600 | { | |
10601 | r[3].r_offset = r[2].r_offset + 4; | |
10602 | r[3].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); | |
10603 | r[3].r_addend = r[0].r_addend + 16; | |
10604 | } | |
c7131b65 | 10605 | } |
176a0d42 AM |
10606 | } |
10607 | } | |
794e51c0 AM |
10608 | if (ALWAYS_EMIT_R2SAVE |
10609 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
a078d95a | 10610 | bfd_put_32 (obfd, STD_R2_0R1 + STK_TOC (htab), p), p += 4; |
397998fc AM |
10611 | if (plt_load_toc) |
10612 | { | |
10613 | bfd_put_32 (obfd, ADDIS_R11_R2 | PPC_HA (offset), p), p += 4; | |
10614 | bfd_put_32 (obfd, LD_R12_0R11 | PPC_LO (offset), p), p += 4; | |
10615 | } | |
10616 | else | |
10617 | { | |
10618 | bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (offset), p), p += 4; | |
10619 | bfd_put_32 (obfd, LD_R12_0R12 | PPC_LO (offset), p), p += 4; | |
10620 | } | |
b9e5796b AM |
10621 | if (plt_load_toc |
10622 | && PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset)) | |
ac2df442 | 10623 | { |
71a39c98 | 10624 | bfd_put_32 (obfd, ADDI_R11_R11 | PPC_LO (offset), p), p += 4; |
ac2df442 AM |
10625 | offset = 0; |
10626 | } | |
71a39c98 | 10627 | bfd_put_32 (obfd, MTCTR_R12, p), p += 4; |
b9e5796b | 10628 | if (plt_load_toc) |
794e51c0 | 10629 | { |
b9e5796b AM |
10630 | if (use_fake_dep) |
10631 | { | |
10632 | bfd_put_32 (obfd, XOR_R2_R12_R12, p), p += 4; | |
10633 | bfd_put_32 (obfd, ADD_R11_R11_R2, p), p += 4; | |
10634 | } | |
10635 | bfd_put_32 (obfd, LD_R2_0R11 | PPC_LO (offset + 8), p), p += 4; | |
10636 | if (plt_static_chain) | |
10637 | bfd_put_32 (obfd, LD_R11_0R11 | PPC_LO (offset + 16), p), p += 4; | |
794e51c0 | 10638 | } |
ac2df442 AM |
10639 | } |
10640 | else | |
10641 | { | |
176a0d42 AM |
10642 | if (r != NULL) |
10643 | { | |
794e51c0 AM |
10644 | if (ALWAYS_EMIT_R2SAVE |
10645 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
10646 | r[0].r_offset += 4; | |
176a0d42 | 10647 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); |
b9e5796b | 10648 | if (plt_load_toc) |
176a0d42 | 10649 | { |
b9e5796b | 10650 | if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset)) |
c7131b65 | 10651 | { |
b9e5796b AM |
10652 | r[1].r_offset = r[0].r_offset + 4; |
10653 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16); | |
10654 | r[1].r_addend = r[0].r_addend; | |
10655 | } | |
10656 | else | |
10657 | { | |
10658 | r[1].r_offset = r[0].r_offset + 8 + 8 * use_fake_dep; | |
10659 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); | |
10660 | r[1].r_addend = r[0].r_addend + 8 + 8 * plt_static_chain; | |
10661 | if (plt_static_chain) | |
10662 | { | |
10663 | r[2].r_offset = r[1].r_offset + 4; | |
10664 | r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); | |
10665 | r[2].r_addend = r[0].r_addend + 8; | |
10666 | } | |
c7131b65 | 10667 | } |
176a0d42 AM |
10668 | } |
10669 | } | |
794e51c0 AM |
10670 | if (ALWAYS_EMIT_R2SAVE |
10671 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
a078d95a | 10672 | bfd_put_32 (obfd, STD_R2_0R1 + STK_TOC (htab), p), p += 4; |
71a39c98 | 10673 | bfd_put_32 (obfd, LD_R12_0R2 | PPC_LO (offset), p), p += 4; |
b9e5796b AM |
10674 | if (plt_load_toc |
10675 | && PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset)) | |
ac2df442 AM |
10676 | { |
10677 | bfd_put_32 (obfd, ADDI_R2_R2 | PPC_LO (offset), p), p += 4; | |
10678 | offset = 0; | |
10679 | } | |
71a39c98 | 10680 | bfd_put_32 (obfd, MTCTR_R12, p), p += 4; |
b9e5796b | 10681 | if (plt_load_toc) |
794e51c0 | 10682 | { |
b9e5796b AM |
10683 | if (use_fake_dep) |
10684 | { | |
10685 | bfd_put_32 (obfd, XOR_R11_R12_R12, p), p += 4; | |
10686 | bfd_put_32 (obfd, ADD_R2_R2_R11, p), p += 4; | |
10687 | } | |
10688 | if (plt_static_chain) | |
10689 | bfd_put_32 (obfd, LD_R11_0R2 | PPC_LO (offset + 16), p), p += 4; | |
10690 | bfd_put_32 (obfd, LD_R2_0R2 | PPC_LO (offset + 8), p), p += 4; | |
794e51c0 | 10691 | } |
ac2df442 | 10692 | } |
b9e5796b | 10693 | if (plt_load_toc && plt_thread_safe && !use_fake_dep) |
794e51c0 AM |
10694 | { |
10695 | bfd_put_32 (obfd, CMPLDI_R2_0, p), p += 4; | |
10696 | bfd_put_32 (obfd, BNECTR_P4, p), p += 4; | |
22aa0c7e | 10697 | bfd_put_32 (obfd, B_DOT | (cmp_branch_off & 0x3fffffc), p), p += 4; |
794e51c0 AM |
10698 | } |
10699 | else | |
407aa07c | 10700 | bfd_put_32 (obfd, BCTR, p), p += 4; |
5d1634d7 AM |
10701 | return p; |
10702 | } | |
10703 | ||
a7f2871e AM |
10704 | /* Build a special .plt call stub for __tls_get_addr. */ |
10705 | ||
10706 | #define LD_R11_0R3 0xe9630000 | |
10707 | #define LD_R12_0R3 0xe9830000 | |
10708 | #define MR_R0_R3 0x7c601b78 | |
10709 | #define CMPDI_R11_0 0x2c2b0000 | |
10710 | #define ADD_R3_R12_R13 0x7c6c6a14 | |
10711 | #define BEQLR 0x4d820020 | |
10712 | #define MR_R3_R0 0x7c030378 | |
a7f2871e AM |
10713 | #define STD_R11_0R1 0xf9610000 |
10714 | #define BCTRL 0x4e800421 | |
10715 | #define LD_R11_0R1 0xe9610000 | |
a7f2871e AM |
10716 | #define MTLR_R11 0x7d6803a6 |
10717 | ||
10718 | static inline bfd_byte * | |
794e51c0 AM |
10719 | build_tls_get_addr_stub (struct ppc_link_hash_table *htab, |
10720 | struct ppc_stub_hash_entry *stub_entry, | |
10721 | bfd_byte *p, bfd_vma offset, Elf_Internal_Rela *r) | |
a7f2871e | 10722 | { |
e7d1c40c | 10723 | bfd *obfd = htab->params->stub_bfd; |
794e51c0 | 10724 | |
a7f2871e AM |
10725 | bfd_put_32 (obfd, LD_R11_0R3 + 0, p), p += 4; |
10726 | bfd_put_32 (obfd, LD_R12_0R3 + 8, p), p += 4; | |
10727 | bfd_put_32 (obfd, MR_R0_R3, p), p += 4; | |
10728 | bfd_put_32 (obfd, CMPDI_R11_0, p), p += 4; | |
10729 | bfd_put_32 (obfd, ADD_R3_R12_R13, p), p += 4; | |
10730 | bfd_put_32 (obfd, BEQLR, p), p += 4; | |
10731 | bfd_put_32 (obfd, MR_R3_R0, p), p += 4; | |
f378ab09 AM |
10732 | if (r != NULL) |
10733 | r[0].r_offset += 7 * 4; | |
10734 | if (!ALWAYS_EMIT_R2SAVE | |
10735 | && stub_entry->stub_type != ppc_stub_plt_call_r2save) | |
10736 | return build_plt_stub (htab, stub_entry, p, offset, r); | |
10737 | ||
a7f2871e | 10738 | bfd_put_32 (obfd, MFLR_R11, p), p += 4; |
a078d95a | 10739 | bfd_put_32 (obfd, STD_R11_0R1 + STK_LINKER (htab), p), p += 4; |
a7f2871e AM |
10740 | |
10741 | if (r != NULL) | |
f378ab09 | 10742 | r[0].r_offset += 2 * 4; |
794e51c0 | 10743 | p = build_plt_stub (htab, stub_entry, p, offset, r); |
407aa07c | 10744 | bfd_put_32 (obfd, BCTRL, p - 4); |
a7f2871e | 10745 | |
a078d95a | 10746 | bfd_put_32 (obfd, LD_R2_0R1 + STK_TOC (htab), p), p += 4; |
bd4d2eaa | 10747 | bfd_put_32 (obfd, LD_R11_0R1 + STK_LINKER (htab), p), p += 4; |
a7f2871e AM |
10748 | bfd_put_32 (obfd, MTLR_R11, p), p += 4; |
10749 | bfd_put_32 (obfd, BLR, p), p += 4; | |
10750 | ||
10751 | return p; | |
10752 | } | |
10753 | ||
176a0d42 AM |
10754 | static Elf_Internal_Rela * |
10755 | get_relocs (asection *sec, int count) | |
10756 | { | |
10757 | Elf_Internal_Rela *relocs; | |
10758 | struct bfd_elf_section_data *elfsec_data; | |
10759 | ||
10760 | elfsec_data = elf_section_data (sec); | |
10761 | relocs = elfsec_data->relocs; | |
10762 | if (relocs == NULL) | |
10763 | { | |
10764 | bfd_size_type relsize; | |
10765 | relsize = sec->reloc_count * sizeof (*relocs); | |
10766 | relocs = bfd_alloc (sec->owner, relsize); | |
10767 | if (relocs == NULL) | |
10768 | return NULL; | |
10769 | elfsec_data->relocs = relocs; | |
d4730f92 BS |
10770 | elfsec_data->rela.hdr = bfd_zalloc (sec->owner, |
10771 | sizeof (Elf_Internal_Shdr)); | |
10772 | if (elfsec_data->rela.hdr == NULL) | |
10773 | return NULL; | |
10774 | elfsec_data->rela.hdr->sh_size = (sec->reloc_count | |
10775 | * sizeof (Elf64_External_Rela)); | |
10776 | elfsec_data->rela.hdr->sh_entsize = sizeof (Elf64_External_Rela); | |
176a0d42 AM |
10777 | sec->reloc_count = 0; |
10778 | } | |
10779 | relocs += sec->reloc_count; | |
10780 | sec->reloc_count += count; | |
10781 | return relocs; | |
10782 | } | |
10783 | ||
aa374f67 | 10784 | static bfd_vma |
25f53a85 | 10785 | get_r2off (struct bfd_link_info *info, |
aa374f67 AM |
10786 | struct ppc_stub_hash_entry *stub_entry) |
10787 | { | |
25f53a85 | 10788 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
6f20ed8a | 10789 | bfd_vma r2off = htab->sec_info[stub_entry->target_section->id].toc_off; |
aa374f67 AM |
10790 | |
10791 | if (r2off == 0) | |
10792 | { | |
10793 | /* Support linking -R objects. Get the toc pointer from the | |
10794 | opd entry. */ | |
10795 | char buf[8]; | |
b9e5796b AM |
10796 | if (!htab->opd_abi) |
10797 | return r2off; | |
aa374f67 AM |
10798 | asection *opd = stub_entry->h->elf.root.u.def.section; |
10799 | bfd_vma opd_off = stub_entry->h->elf.root.u.def.value; | |
10800 | ||
10801 | if (strcmp (opd->name, ".opd") != 0 | |
10802 | || opd->reloc_count != 0) | |
10803 | { | |
c1c8c1ef | 10804 | info->callbacks->einfo (_("%P: cannot find opd entry toc for `%pT'\n"), |
25f53a85 | 10805 | stub_entry->h->elf.root.root.string); |
aa374f67 | 10806 | bfd_set_error (bfd_error_bad_value); |
a7c49797 | 10807 | return (bfd_vma) -1; |
aa374f67 AM |
10808 | } |
10809 | if (!bfd_get_section_contents (opd->owner, opd, buf, opd_off + 8, 8)) | |
a7c49797 | 10810 | return (bfd_vma) -1; |
aa374f67 | 10811 | r2off = bfd_get_64 (opd->owner, buf); |
25f53a85 | 10812 | r2off -= elf_gp (info->output_bfd); |
aa374f67 | 10813 | } |
6f20ed8a | 10814 | r2off -= htab->sec_info[stub_entry->group->link_sec->id].toc_off; |
aa374f67 AM |
10815 | return r2off; |
10816 | } | |
10817 | ||
b34976b6 | 10818 | static bfd_boolean |
4ce794b7 | 10819 | ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg) |
5d1634d7 | 10820 | { |
721956f4 AM |
10821 | struct ppc_stub_hash_entry *stub_entry; |
10822 | struct ppc_branch_hash_entry *br_entry; | |
5d1634d7 AM |
10823 | struct bfd_link_info *info; |
10824 | struct ppc_link_hash_table *htab; | |
721956f4 AM |
10825 | bfd_byte *loc; |
10826 | bfd_byte *p; | |
ee75fd95 | 10827 | bfd_vma dest, off; |
176a0d42 | 10828 | Elf_Internal_Rela *r; |
e054468f | 10829 | asection *plt; |
5d1634d7 | 10830 | |
721956f4 AM |
10831 | /* Massage our args to the form they really have. */ |
10832 | stub_entry = (struct ppc_stub_hash_entry *) gen_entry; | |
4ce794b7 | 10833 | info = in_arg; |
5d1634d7 | 10834 | |
5d1634d7 | 10835 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
10836 | if (htab == NULL) |
10837 | return FALSE; | |
5d1634d7 | 10838 | |
721956f4 | 10839 | /* Make a note of the offset within the stubs for this entry. */ |
6f20ed8a AM |
10840 | stub_entry->stub_offset = stub_entry->group->stub_sec->size; |
10841 | loc = stub_entry->group->stub_sec->contents + stub_entry->stub_offset; | |
721956f4 | 10842 | |
4ce794b7 | 10843 | htab->stub_count[stub_entry->stub_type - 1] += 1; |
721956f4 | 10844 | switch (stub_entry->stub_type) |
5d1634d7 | 10845 | { |
721956f4 | 10846 | case ppc_stub_long_branch: |
ad8e1ba5 | 10847 | case ppc_stub_long_branch_r2off: |
721956f4 | 10848 | /* Branches are relative. This is where we are going to. */ |
6911b7dc AM |
10849 | dest = (stub_entry->target_value |
10850 | + stub_entry->target_section->output_offset | |
10851 | + stub_entry->target_section->output_section->vma); | |
10852 | dest += PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other); | |
10853 | off = dest; | |
5d1634d7 | 10854 | |
721956f4 AM |
10855 | /* And this is where we are coming from. */ |
10856 | off -= (stub_entry->stub_offset | |
6f20ed8a AM |
10857 | + stub_entry->group->stub_sec->output_offset |
10858 | + stub_entry->group->stub_sec->output_section->vma); | |
e86ce104 | 10859 | |
9e390558 | 10860 | p = loc; |
ac2df442 | 10861 | if (stub_entry->stub_type == ppc_stub_long_branch_r2off) |
ad8e1ba5 | 10862 | { |
25f53a85 | 10863 | bfd_vma r2off = get_r2off (info, stub_entry); |
ad8e1ba5 | 10864 | |
a7c49797 | 10865 | if (r2off == (bfd_vma) -1) |
aa374f67 AM |
10866 | { |
10867 | htab->stub_error = TRUE; | |
10868 | return FALSE; | |
10869 | } | |
9e390558 AM |
10870 | bfd_put_32 (htab->params->stub_bfd, STD_R2_0R1 + STK_TOC (htab), p); |
10871 | p += 4; | |
ac2df442 AM |
10872 | if (PPC_HA (r2off) != 0) |
10873 | { | |
e7d1c40c | 10874 | bfd_put_32 (htab->params->stub_bfd, |
9e390558 AM |
10875 | ADDIS_R2_R2 | PPC_HA (r2off), p); |
10876 | p += 4; | |
a7c49797 AM |
10877 | } |
10878 | if (PPC_LO (r2off) != 0) | |
10879 | { | |
10880 | bfd_put_32 (htab->params->stub_bfd, | |
9e390558 AM |
10881 | ADDI_R2_R2 | PPC_LO (r2off), p); |
10882 | p += 4; | |
ac2df442 | 10883 | } |
9e390558 | 10884 | off -= p - loc; |
ad8e1ba5 | 10885 | } |
9e390558 AM |
10886 | bfd_put_32 (htab->params->stub_bfd, B_DOT | (off & 0x3fffffc), p); |
10887 | p += 4; | |
ad8e1ba5 | 10888 | |
5c3dead3 AM |
10889 | if (off + (1 << 25) >= (bfd_vma) (1 << 26)) |
10890 | { | |
cf97bcb0 AM |
10891 | _bfd_error_handler |
10892 | (_("long branch stub `%s' offset overflow"), | |
bc30df16 | 10893 | stub_entry->root.string); |
5c3dead3 AM |
10894 | htab->stub_error = TRUE; |
10895 | return FALSE; | |
10896 | } | |
ee75fd95 AM |
10897 | |
10898 | if (info->emitrelocations) | |
10899 | { | |
6f20ed8a | 10900 | r = get_relocs (stub_entry->group->stub_sec, 1); |
176a0d42 AM |
10901 | if (r == NULL) |
10902 | return FALSE; | |
9e390558 | 10903 | r->r_offset = p - 4 - stub_entry->group->stub_sec->contents; |
ee75fd95 AM |
10904 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL24); |
10905 | r->r_addend = dest; | |
10906 | if (stub_entry->h != NULL) | |
10907 | { | |
10908 | struct elf_link_hash_entry **hashes; | |
10909 | unsigned long symndx; | |
10910 | struct ppc_link_hash_entry *h; | |
10911 | ||
e7d1c40c | 10912 | hashes = elf_sym_hashes (htab->params->stub_bfd); |
ee75fd95 AM |
10913 | if (hashes == NULL) |
10914 | { | |
10915 | bfd_size_type hsize; | |
10916 | ||
10917 | hsize = (htab->stub_globals + 1) * sizeof (*hashes); | |
e7d1c40c | 10918 | hashes = bfd_zalloc (htab->params->stub_bfd, hsize); |
ee75fd95 AM |
10919 | if (hashes == NULL) |
10920 | return FALSE; | |
e7d1c40c | 10921 | elf_sym_hashes (htab->params->stub_bfd) = hashes; |
ee75fd95 AM |
10922 | htab->stub_globals = 1; |
10923 | } | |
10924 | symndx = htab->stub_globals++; | |
10925 | h = stub_entry->h; | |
10926 | hashes[symndx] = &h->elf; | |
10927 | r->r_info = ELF64_R_INFO (symndx, R_PPC64_REL24); | |
10928 | if (h->oh != NULL && h->oh->is_func) | |
b31867b6 | 10929 | h = ppc_follow_link (h->oh); |
ee75fd95 AM |
10930 | if (h->elf.root.u.def.section != stub_entry->target_section) |
10931 | /* H is an opd symbol. The addend must be zero. */ | |
10932 | r->r_addend = 0; | |
10933 | else | |
10934 | { | |
10935 | off = (h->elf.root.u.def.value | |
10936 | + h->elf.root.u.def.section->output_offset | |
10937 | + h->elf.root.u.def.section->output_section->vma); | |
10938 | r->r_addend -= off; | |
10939 | } | |
10940 | } | |
10941 | } | |
721956f4 | 10942 | break; |
e86ce104 | 10943 | |
721956f4 | 10944 | case ppc_stub_plt_branch: |
ad8e1ba5 | 10945 | case ppc_stub_plt_branch_r2off: |
721956f4 AM |
10946 | br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table, |
10947 | stub_entry->root.string + 9, | |
b34976b6 | 10948 | FALSE, FALSE); |
721956f4 AM |
10949 | if (br_entry == NULL) |
10950 | { | |
cf97bcb0 AM |
10951 | _bfd_error_handler (_("can't find branch stub `%s'"), |
10952 | stub_entry->root.string); | |
b34976b6 AM |
10953 | htab->stub_error = TRUE; |
10954 | return FALSE; | |
721956f4 AM |
10955 | } |
10956 | ||
176a0d42 AM |
10957 | dest = (stub_entry->target_value |
10958 | + stub_entry->target_section->output_offset | |
10959 | + stub_entry->target_section->output_section->vma); | |
6911b7dc AM |
10960 | if (stub_entry->stub_type != ppc_stub_plt_branch_r2off) |
10961 | dest += PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other); | |
721956f4 | 10962 | |
176a0d42 | 10963 | bfd_put_64 (htab->brlt->owner, dest, |
4ce794b7 | 10964 | htab->brlt->contents + br_entry->offset); |
721956f4 | 10965 | |
f94498ff | 10966 | if (br_entry->iter == htab->stub_iteration) |
721956f4 | 10967 | { |
f94498ff | 10968 | br_entry->iter = 0; |
84f5d08e | 10969 | |
f94498ff | 10970 | if (htab->relbrlt != NULL) |
84f5d08e | 10971 | { |
f94498ff AM |
10972 | /* Create a reloc for the branch lookup table entry. */ |
10973 | Elf_Internal_Rela rela; | |
10974 | bfd_byte *rl; | |
10975 | ||
10976 | rela.r_offset = (br_entry->offset | |
10977 | + htab->brlt->output_offset | |
10978 | + htab->brlt->output_section->vma); | |
10979 | rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
176a0d42 | 10980 | rela.r_addend = dest; |
f94498ff AM |
10981 | |
10982 | rl = htab->relbrlt->contents; | |
10983 | rl += (htab->relbrlt->reloc_count++ | |
10984 | * sizeof (Elf64_External_Rela)); | |
10985 | bfd_elf64_swap_reloca_out (htab->relbrlt->owner, &rela, rl); | |
10986 | } | |
10987 | else if (info->emitrelocations) | |
10988 | { | |
176a0d42 AM |
10989 | r = get_relocs (htab->brlt, 1); |
10990 | if (r == NULL) | |
10991 | return FALSE; | |
10992 | /* brlt, being SEC_LINKER_CREATED does not go through the | |
10993 | normal reloc processing. Symbols and offsets are not | |
10994 | translated from input file to output file form, so | |
10995 | set up the offset per the output file. */ | |
f94498ff AM |
10996 | r->r_offset = (br_entry->offset |
10997 | + htab->brlt->output_offset | |
10998 | + htab->brlt->output_section->vma); | |
10999 | r->r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
176a0d42 | 11000 | r->r_addend = dest; |
84f5d08e | 11001 | } |
84f5d08e | 11002 | } |
721956f4 | 11003 | |
176a0d42 AM |
11004 | dest = (br_entry->offset |
11005 | + htab->brlt->output_offset | |
11006 | + htab->brlt->output_section->vma); | |
11007 | ||
11008 | off = (dest | |
06bcf541 | 11009 | - elf_gp (info->output_bfd) |
6f20ed8a | 11010 | - htab->sec_info[stub_entry->group->link_sec->id].toc_off); |
721956f4 | 11011 | |
ad8e1ba5 | 11012 | if (off + 0x80008000 > 0xffffffff || (off & 7) != 0) |
5d1634d7 | 11013 | { |
25f53a85 | 11014 | info->callbacks->einfo |
c1c8c1ef | 11015 | (_("%P: linkage table error against `%pT'\n"), |
721956f4 | 11016 | stub_entry->root.string); |
5d1634d7 | 11017 | bfd_set_error (bfd_error_bad_value); |
b34976b6 AM |
11018 | htab->stub_error = TRUE; |
11019 | return FALSE; | |
5d1634d7 | 11020 | } |
41bd81ab | 11021 | |
176a0d42 AM |
11022 | if (info->emitrelocations) |
11023 | { | |
6f20ed8a | 11024 | r = get_relocs (stub_entry->group->stub_sec, 1 + (PPC_HA (off) != 0)); |
176a0d42 AM |
11025 | if (r == NULL) |
11026 | return FALSE; | |
6f20ed8a | 11027 | r[0].r_offset = loc - stub_entry->group->stub_sec->contents; |
7cfbafbc AM |
11028 | if (bfd_big_endian (info->output_bfd)) |
11029 | r[0].r_offset += 2; | |
00f412ee | 11030 | if (stub_entry->stub_type == ppc_stub_plt_branch_r2off) |
176a0d42 AM |
11031 | r[0].r_offset += 4; |
11032 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); | |
11033 | r[0].r_addend = dest; | |
11034 | if (PPC_HA (off) != 0) | |
11035 | { | |
11036 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA); | |
11037 | r[1].r_offset = r[0].r_offset + 4; | |
11038 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); | |
11039 | r[1].r_addend = r[0].r_addend; | |
11040 | } | |
11041 | } | |
11042 | ||
9e390558 | 11043 | p = loc; |
00f412ee | 11044 | if (stub_entry->stub_type != ppc_stub_plt_branch_r2off) |
ad8e1ba5 | 11045 | { |
176a0d42 | 11046 | if (PPC_HA (off) != 0) |
ac2df442 | 11047 | { |
e7d1c40c | 11048 | bfd_put_32 (htab->params->stub_bfd, |
9e390558 AM |
11049 | ADDIS_R12_R2 | PPC_HA (off), p); |
11050 | p += 4; | |
e7d1c40c | 11051 | bfd_put_32 (htab->params->stub_bfd, |
9e390558 | 11052 | LD_R12_0R12 | PPC_LO (off), p); |
ac2df442 AM |
11053 | } |
11054 | else | |
9e390558 AM |
11055 | bfd_put_32 (htab->params->stub_bfd, |
11056 | LD_R12_0R2 | PPC_LO (off), p); | |
ad8e1ba5 AM |
11057 | } |
11058 | else | |
11059 | { | |
25f53a85 | 11060 | bfd_vma r2off = get_r2off (info, stub_entry); |
aa374f67 | 11061 | |
a7c49797 | 11062 | if (r2off == (bfd_vma) -1) |
aa374f67 AM |
11063 | { |
11064 | htab->stub_error = TRUE; | |
11065 | return FALSE; | |
11066 | } | |
ad8e1ba5 | 11067 | |
9e390558 AM |
11068 | bfd_put_32 (htab->params->stub_bfd, STD_R2_0R1 + STK_TOC (htab), p); |
11069 | p += 4; | |
176a0d42 | 11070 | if (PPC_HA (off) != 0) |
ac2df442 | 11071 | { |
e7d1c40c | 11072 | bfd_put_32 (htab->params->stub_bfd, |
9e390558 AM |
11073 | ADDIS_R12_R2 | PPC_HA (off), p); |
11074 | p += 4; | |
e7d1c40c | 11075 | bfd_put_32 (htab->params->stub_bfd, |
9e390558 | 11076 | LD_R12_0R12 | PPC_LO (off), p); |
ac2df442 AM |
11077 | } |
11078 | else | |
9e390558 | 11079 | bfd_put_32 (htab->params->stub_bfd, LD_R12_0R2 | PPC_LO (off), p); |
ac2df442 AM |
11080 | |
11081 | if (PPC_HA (r2off) != 0) | |
11082 | { | |
9e390558 | 11083 | p += 4; |
e7d1c40c | 11084 | bfd_put_32 (htab->params->stub_bfd, |
9e390558 | 11085 | ADDIS_R2_R2 | PPC_HA (r2off), p); |
00f412ee AM |
11086 | } |
11087 | if (PPC_LO (r2off) != 0) | |
11088 | { | |
9e390558 | 11089 | p += 4; |
e7d1c40c | 11090 | bfd_put_32 (htab->params->stub_bfd, |
9e390558 | 11091 | ADDI_R2_R2 | PPC_LO (r2off), p); |
ac2df442 | 11092 | } |
ad8e1ba5 | 11093 | } |
9e390558 AM |
11094 | p += 4; |
11095 | bfd_put_32 (htab->params->stub_bfd, MTCTR_R12, p); | |
11096 | p += 4; | |
407aa07c AM |
11097 | bfd_put_32 (htab->params->stub_bfd, BCTR, p); |
11098 | p += 4; | |
721956f4 | 11099 | break; |
5d1634d7 | 11100 | |
721956f4 | 11101 | case ppc_stub_plt_call: |
794e51c0 | 11102 | case ppc_stub_plt_call_r2save: |
e054468f | 11103 | if (stub_entry->h != NULL |
b31867b6 AM |
11104 | && stub_entry->h->is_func_descriptor |
11105 | && stub_entry->h->oh != NULL) | |
c862ae31 | 11106 | { |
b31867b6 AM |
11107 | struct ppc_link_hash_entry *fh = ppc_follow_link (stub_entry->h->oh); |
11108 | ||
11109 | /* If the old-ABI "dot-symbol" is undefined make it weak so | |
6f20ed8a | 11110 | we don't get a link error from RELOC_FOR_GLOBAL_SYMBOL. */ |
8c5b4e52 AM |
11111 | if (fh->elf.root.type == bfd_link_hash_undefined |
11112 | && (stub_entry->h->elf.root.type == bfd_link_hash_defined | |
11113 | || stub_entry->h->elf.root.type == bfd_link_hash_defweak)) | |
b31867b6 | 11114 | fh->elf.root.type = bfd_link_hash_undefweak; |
c862ae31 AM |
11115 | } |
11116 | ||
721956f4 | 11117 | /* Now build the stub. */ |
e054468f | 11118 | dest = stub_entry->plt_ent->plt.offset & ~1; |
176a0d42 | 11119 | if (dest >= (bfd_vma) -2) |
721956f4 AM |
11120 | abort (); |
11121 | ||
33e44f2e | 11122 | plt = htab->elf.splt; |
25f23106 AM |
11123 | if (!htab->elf.dynamic_sections_created |
11124 | || stub_entry->h == NULL | |
11125 | || stub_entry->h->elf.dynindx == -1) | |
33e44f2e | 11126 | plt = htab->elf.iplt; |
e054468f AM |
11127 | |
11128 | dest += plt->output_offset + plt->output_section->vma; | |
11129 | ||
11130 | if (stub_entry->h == NULL | |
11131 | && (stub_entry->plt_ent->plt.offset & 1) == 0) | |
11132 | { | |
11133 | Elf_Internal_Rela rela; | |
11134 | bfd_byte *rl; | |
11135 | ||
11136 | rela.r_offset = dest; | |
ee67d69a AM |
11137 | if (htab->opd_abi) |
11138 | rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL); | |
11139 | else | |
11140 | rela.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE); | |
e054468f AM |
11141 | rela.r_addend = (stub_entry->target_value |
11142 | + stub_entry->target_section->output_offset | |
11143 | + stub_entry->target_section->output_section->vma); | |
11144 | ||
33e44f2e AM |
11145 | rl = (htab->elf.irelplt->contents |
11146 | + (htab->elf.irelplt->reloc_count++ | |
25f23106 AM |
11147 | * sizeof (Elf64_External_Rela))); |
11148 | bfd_elf64_swap_reloca_out (info->output_bfd, &rela, rl); | |
e054468f | 11149 | stub_entry->plt_ent->plt.offset |= 1; |
82e66161 | 11150 | htab->local_ifunc_resolver = 1; |
e054468f | 11151 | } |
176a0d42 AM |
11152 | |
11153 | off = (dest | |
06bcf541 | 11154 | - elf_gp (info->output_bfd) |
6f20ed8a | 11155 | - htab->sec_info[stub_entry->group->link_sec->id].toc_off); |
721956f4 | 11156 | |
ad8e1ba5 | 11157 | if (off + 0x80008000 > 0xffffffff || (off & 7) != 0) |
721956f4 | 11158 | { |
25f53a85 | 11159 | info->callbacks->einfo |
695344c0 | 11160 | /* xgettext:c-format */ |
c1c8c1ef | 11161 | (_("%P: linkage table error against `%pT'\n"), |
e054468f AM |
11162 | stub_entry->h != NULL |
11163 | ? stub_entry->h->elf.root.root.string | |
11164 | : "<local sym>"); | |
721956f4 | 11165 | bfd_set_error (bfd_error_bad_value); |
b34976b6 AM |
11166 | htab->stub_error = TRUE; |
11167 | return FALSE; | |
721956f4 AM |
11168 | } |
11169 | ||
e7d1c40c | 11170 | if (htab->params->plt_stub_align != 0) |
794e51c0 AM |
11171 | { |
11172 | unsigned pad = plt_stub_pad (htab, stub_entry, off); | |
11173 | ||
6f20ed8a AM |
11174 | stub_entry->group->stub_sec->size += pad; |
11175 | stub_entry->stub_offset = stub_entry->group->stub_sec->size; | |
794e51c0 AM |
11176 | loc += pad; |
11177 | } | |
11178 | ||
176a0d42 AM |
11179 | r = NULL; |
11180 | if (info->emitrelocations) | |
11181 | { | |
6f20ed8a | 11182 | r = get_relocs (stub_entry->group->stub_sec, |
3ba720c7 AM |
11183 | ((PPC_HA (off) != 0) |
11184 | + (htab->opd_abi | |
e7d1c40c | 11185 | ? 2 + (htab->params->plt_static_chain |
3ba720c7 AM |
11186 | && PPC_HA (off + 16) == PPC_HA (off)) |
11187 | : 1))); | |
176a0d42 AM |
11188 | if (r == NULL) |
11189 | return FALSE; | |
6f20ed8a | 11190 | r[0].r_offset = loc - stub_entry->group->stub_sec->contents; |
7cfbafbc AM |
11191 | if (bfd_big_endian (info->output_bfd)) |
11192 | r[0].r_offset += 2; | |
176a0d42 AM |
11193 | r[0].r_addend = dest; |
11194 | } | |
a7f2871e AM |
11195 | if (stub_entry->h != NULL |
11196 | && (stub_entry->h == htab->tls_get_addr_fd | |
11197 | || stub_entry->h == htab->tls_get_addr) | |
7c9cf415 | 11198 | && htab->params->tls_get_addr_opt) |
794e51c0 | 11199 | p = build_tls_get_addr_stub (htab, stub_entry, loc, off, r); |
a7f2871e | 11200 | else |
794e51c0 | 11201 | p = build_plt_stub (htab, stub_entry, loc, off, r); |
721956f4 AM |
11202 | break; |
11203 | ||
a4b6fadd AM |
11204 | case ppc_stub_save_res: |
11205 | return TRUE; | |
11206 | ||
721956f4 AM |
11207 | default: |
11208 | BFD_FAIL (); | |
b34976b6 | 11209 | return FALSE; |
721956f4 AM |
11210 | } |
11211 | ||
9e390558 | 11212 | stub_entry->group->stub_sec->size += p - loc; |
97b639ba | 11213 | |
e7d1c40c | 11214 | if (htab->params->emit_stub_syms) |
97b639ba AM |
11215 | { |
11216 | struct elf_link_hash_entry *h; | |
ee75fd95 AM |
11217 | size_t len1, len2; |
11218 | char *name; | |
11219 | const char *const stub_str[] = { "long_branch", | |
11220 | "long_branch_r2off", | |
11221 | "plt_branch", | |
11222 | "plt_branch_r2off", | |
794e51c0 | 11223 | "plt_call", |
ee75fd95 AM |
11224 | "plt_call" }; |
11225 | ||
11226 | len1 = strlen (stub_str[stub_entry->stub_type - 1]); | |
11227 | len2 = strlen (stub_entry->root.string); | |
11228 | name = bfd_malloc (len1 + len2 + 2); | |
11229 | if (name == NULL) | |
11230 | return FALSE; | |
11231 | memcpy (name, stub_entry->root.string, 9); | |
11232 | memcpy (name + 9, stub_str[stub_entry->stub_type - 1], len1); | |
11233 | memcpy (name + len1 + 9, stub_entry->root.string + 8, len2 - 8 + 1); | |
11234 | h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE); | |
97b639ba AM |
11235 | if (h == NULL) |
11236 | return FALSE; | |
11237 | if (h->root.type == bfd_link_hash_new) | |
11238 | { | |
11239 | h->root.type = bfd_link_hash_defined; | |
6f20ed8a | 11240 | h->root.u.def.section = stub_entry->group->stub_sec; |
97b639ba | 11241 | h->root.u.def.value = stub_entry->stub_offset; |
f5385ebf AM |
11242 | h->ref_regular = 1; |
11243 | h->def_regular = 1; | |
11244 | h->ref_regular_nonweak = 1; | |
11245 | h->forced_local = 1; | |
11246 | h->non_elf = 0; | |
2ec55de3 | 11247 | h->root.linker_def = 1; |
97b639ba AM |
11248 | } |
11249 | } | |
11250 | ||
b34976b6 | 11251 | return TRUE; |
721956f4 AM |
11252 | } |
11253 | ||
11254 | /* As above, but don't actually build the stub. Just bump offset so | |
11255 | we know stub section sizes, and select plt_branch stubs where | |
11256 | long_branch stubs won't do. */ | |
11257 | ||
b34976b6 | 11258 | static bfd_boolean |
4ce794b7 | 11259 | ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg) |
721956f4 AM |
11260 | { |
11261 | struct ppc_stub_hash_entry *stub_entry; | |
63bc6f6c | 11262 | struct bfd_link_info *info; |
721956f4 AM |
11263 | struct ppc_link_hash_table *htab; |
11264 | bfd_vma off; | |
11265 | int size; | |
11266 | ||
11267 | /* Massage our args to the form they really have. */ | |
11268 | stub_entry = (struct ppc_stub_hash_entry *) gen_entry; | |
63bc6f6c AM |
11269 | info = in_arg; |
11270 | ||
11271 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
11272 | if (htab == NULL) |
11273 | return FALSE; | |
721956f4 | 11274 | |
a4b6fadd AM |
11275 | if (stub_entry->h != NULL |
11276 | && stub_entry->h->save_res | |
11277 | && stub_entry->h->elf.root.type == bfd_link_hash_defined | |
11278 | && stub_entry->h->elf.root.u.def.section == htab->sfpr) | |
11279 | { | |
11280 | /* Don't make stubs to out-of-line register save/restore | |
11281 | functions. Instead, emit copies of the functions. */ | |
11282 | stub_entry->group->needs_save_res = 1; | |
11283 | stub_entry->stub_type = ppc_stub_save_res; | |
11284 | return TRUE; | |
11285 | } | |
11286 | ||
794e51c0 AM |
11287 | if (stub_entry->stub_type == ppc_stub_plt_call |
11288 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
721956f4 | 11289 | { |
e054468f AM |
11290 | asection *plt; |
11291 | off = stub_entry->plt_ent->plt.offset & ~(bfd_vma) 1; | |
58ac9f71 | 11292 | if (off >= (bfd_vma) -2) |
411e1bfb | 11293 | abort (); |
33e44f2e | 11294 | plt = htab->elf.splt; |
25f23106 AM |
11295 | if (!htab->elf.dynamic_sections_created |
11296 | || stub_entry->h == NULL | |
11297 | || stub_entry->h->elf.dynindx == -1) | |
33e44f2e | 11298 | plt = htab->elf.iplt; |
e054468f AM |
11299 | off += (plt->output_offset |
11300 | + plt->output_section->vma | |
06bcf541 | 11301 | - elf_gp (info->output_bfd) |
6f20ed8a | 11302 | - htab->sec_info[stub_entry->group->link_sec->id].toc_off); |
721956f4 | 11303 | |
794e51c0 | 11304 | size = plt_stub_size (htab, stub_entry, off); |
d4aaa2a0 AM |
11305 | if (stub_entry->h != NULL |
11306 | && (stub_entry->h == htab->tls_get_addr_fd | |
11307 | || stub_entry->h == htab->tls_get_addr) | |
11308 | && htab->params->tls_get_addr_opt | |
11309 | && (ALWAYS_EMIT_R2SAVE | |
11310 | || stub_entry->stub_type == ppc_stub_plt_call_r2save)) | |
11311 | stub_entry->group->tls_get_addr_opt_bctrl | |
11312 | = stub_entry->group->stub_sec->size + size - 5 * 4; | |
11313 | ||
e7d1c40c | 11314 | if (htab->params->plt_stub_align) |
794e51c0 | 11315 | size += plt_stub_pad (htab, stub_entry, off); |
176a0d42 AM |
11316 | if (info->emitrelocations) |
11317 | { | |
6f20ed8a | 11318 | stub_entry->group->stub_sec->reloc_count |
b9e5796b AM |
11319 | += ((PPC_HA (off) != 0) |
11320 | + (htab->opd_abi | |
e7d1c40c | 11321 | ? 2 + (htab->params->plt_static_chain |
b9e5796b AM |
11322 | && PPC_HA (off + 16) == PPC_HA (off)) |
11323 | : 1)); | |
6f20ed8a | 11324 | stub_entry->group->stub_sec->flags |= SEC_RELOC; |
176a0d42 | 11325 | } |
721956f4 AM |
11326 | } |
11327 | else | |
11328 | { | |
ad8e1ba5 AM |
11329 | /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off |
11330 | variants. */ | |
ac2df442 | 11331 | bfd_vma r2off = 0; |
6911b7dc | 11332 | bfd_vma local_off = 0; |
ac2df442 | 11333 | |
721956f4 AM |
11334 | off = (stub_entry->target_value |
11335 | + stub_entry->target_section->output_offset | |
11336 | + stub_entry->target_section->output_section->vma); | |
6f20ed8a AM |
11337 | off -= (stub_entry->group->stub_sec->size |
11338 | + stub_entry->group->stub_sec->output_offset | |
11339 | + stub_entry->group->stub_sec->output_section->vma); | |
721956f4 | 11340 | |
ad8e1ba5 AM |
11341 | /* Reset the stub type from the plt variant in case we now |
11342 | can reach with a shorter stub. */ | |
11343 | if (stub_entry->stub_type >= ppc_stub_plt_branch) | |
11344 | stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch; | |
11345 | ||
11346 | size = 4; | |
11347 | if (stub_entry->stub_type == ppc_stub_long_branch_r2off) | |
11348 | { | |
25f53a85 | 11349 | r2off = get_r2off (info, stub_entry); |
a7c49797 | 11350 | if (r2off == (bfd_vma) -1) |
aa374f67 AM |
11351 | { |
11352 | htab->stub_error = TRUE; | |
11353 | return FALSE; | |
11354 | } | |
a7c49797 | 11355 | size = 8; |
ac2df442 | 11356 | if (PPC_HA (r2off) != 0) |
a7c49797 AM |
11357 | size += 4; |
11358 | if (PPC_LO (r2off) != 0) | |
11359 | size += 4; | |
ac2df442 | 11360 | off -= size - 4; |
ad8e1ba5 AM |
11361 | } |
11362 | ||
6911b7dc AM |
11363 | local_off = PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other); |
11364 | ||
6a3858a6 | 11365 | /* If the branch offset is too big, use a ppc_stub_plt_branch. |
b9e5796b AM |
11366 | Do the same for -R objects without function descriptors. */ |
11367 | if (off + (1 << 25) >= (bfd_vma) (1 << 26) - local_off | |
11368 | || (stub_entry->stub_type == ppc_stub_long_branch_r2off | |
a7c49797 AM |
11369 | && r2off == 0 |
11370 | && htab->sec_info[stub_entry->target_section->id].toc_off == 0)) | |
721956f4 AM |
11371 | { |
11372 | struct ppc_branch_hash_entry *br_entry; | |
11373 | ||
11374 | br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table, | |
11375 | stub_entry->root.string + 9, | |
b34976b6 | 11376 | TRUE, FALSE); |
721956f4 AM |
11377 | if (br_entry == NULL) |
11378 | { | |
cf97bcb0 AM |
11379 | _bfd_error_handler (_("can't build branch stub `%s'"), |
11380 | stub_entry->root.string); | |
b34976b6 AM |
11381 | htab->stub_error = TRUE; |
11382 | return FALSE; | |
721956f4 AM |
11383 | } |
11384 | ||
11385 | if (br_entry->iter != htab->stub_iteration) | |
11386 | { | |
11387 | br_entry->iter = htab->stub_iteration; | |
eea6121a AM |
11388 | br_entry->offset = htab->brlt->size; |
11389 | htab->brlt->size += 8; | |
63bc6f6c | 11390 | |
ee75fd95 | 11391 | if (htab->relbrlt != NULL) |
eea6121a | 11392 | htab->relbrlt->size += sizeof (Elf64_External_Rela); |
84f5d08e AM |
11393 | else if (info->emitrelocations) |
11394 | { | |
11395 | htab->brlt->reloc_count += 1; | |
11396 | htab->brlt->flags |= SEC_RELOC; | |
11397 | } | |
721956f4 | 11398 | } |
ad8e1ba5 AM |
11399 | |
11400 | stub_entry->stub_type += ppc_stub_plt_branch - ppc_stub_long_branch; | |
ac2df442 AM |
11401 | off = (br_entry->offset |
11402 | + htab->brlt->output_offset | |
11403 | + htab->brlt->output_section->vma | |
06bcf541 | 11404 | - elf_gp (info->output_bfd) |
6f20ed8a | 11405 | - htab->sec_info[stub_entry->group->link_sec->id].toc_off); |
ac2df442 | 11406 | |
176a0d42 AM |
11407 | if (info->emitrelocations) |
11408 | { | |
6f20ed8a AM |
11409 | stub_entry->group->stub_sec->reloc_count |
11410 | += 1 + (PPC_HA (off) != 0); | |
11411 | stub_entry->group->stub_sec->flags |= SEC_RELOC; | |
176a0d42 AM |
11412 | } |
11413 | ||
00f412ee | 11414 | if (stub_entry->stub_type != ppc_stub_plt_branch_r2off) |
ac2df442 AM |
11415 | { |
11416 | size = 12; | |
176a0d42 | 11417 | if (PPC_HA (off) != 0) |
ac2df442 AM |
11418 | size = 16; |
11419 | } | |
11420 | else | |
11421 | { | |
00f412ee | 11422 | size = 16; |
176a0d42 | 11423 | if (PPC_HA (off) != 0) |
ac2df442 AM |
11424 | size += 4; |
11425 | ||
11426 | if (PPC_HA (r2off) != 0) | |
11427 | size += 4; | |
00f412ee AM |
11428 | if (PPC_LO (r2off) != 0) |
11429 | size += 4; | |
ac2df442 | 11430 | } |
721956f4 | 11431 | } |
84f5d08e AM |
11432 | else if (info->emitrelocations) |
11433 | { | |
6f20ed8a AM |
11434 | stub_entry->group->stub_sec->reloc_count += 1; |
11435 | stub_entry->group->stub_sec->flags |= SEC_RELOC; | |
84f5d08e | 11436 | } |
721956f4 AM |
11437 | } |
11438 | ||
6f20ed8a | 11439 | stub_entry->group->stub_sec->size += size; |
b34976b6 | 11440 | return TRUE; |
721956f4 AM |
11441 | } |
11442 | ||
11443 | /* Set up various things so that we can make a list of input sections | |
11444 | for each output section included in the link. Returns -1 on error, | |
cedb70c5 | 11445 | 0 when no stubs will be needed, and 1 on success. */ |
721956f4 AM |
11446 | |
11447 | int | |
e7d1c40c | 11448 | ppc64_elf_setup_section_lists (struct bfd_link_info *info) |
721956f4 | 11449 | { |
6f20ed8a | 11450 | unsigned int id; |
721956f4 AM |
11451 | bfd_size_type amt; |
11452 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
11453 | ||
4dfe6ac6 NC |
11454 | if (htab == NULL) |
11455 | return -1; | |
4c52953f | 11456 | |
6f20ed8a AM |
11457 | htab->sec_info_arr_size = bfd_get_next_section_id (); |
11458 | amt = sizeof (*htab->sec_info) * (htab->sec_info_arr_size); | |
11459 | htab->sec_info = bfd_zmalloc (amt); | |
11460 | if (htab->sec_info == NULL) | |
721956f4 AM |
11461 | return -1; |
11462 | ||
3d6f9012 AM |
11463 | /* Set toc_off for com, und, abs and ind sections. */ |
11464 | for (id = 0; id < 3; id++) | |
6f20ed8a | 11465 | htab->sec_info[id].toc_off = TOC_BASE_OFF; |
734b6cf9 | 11466 | |
721956f4 AM |
11467 | return 1; |
11468 | } | |
11469 | ||
927be08e AM |
11470 | /* Set up for first pass at multitoc partitioning. */ |
11471 | ||
11472 | void | |
11473 | ppc64_elf_start_multitoc_partition (struct bfd_link_info *info) | |
11474 | { | |
11475 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
11476 | ||
1c865ab2 | 11477 | htab->toc_curr = ppc64_elf_set_toc (info, info->output_bfd); |
927be08e AM |
11478 | htab->toc_bfd = NULL; |
11479 | htab->toc_first_sec = NULL; | |
11480 | } | |
11481 | ||
e717da7e AM |
11482 | /* The linker repeatedly calls this function for each TOC input section |
11483 | and linker generated GOT section. Group input bfds such that the toc | |
927be08e | 11484 | within a group is less than 64k in size. */ |
ad8e1ba5 | 11485 | |
927be08e | 11486 | bfd_boolean |
4ce794b7 | 11487 | ppc64_elf_next_toc_section (struct bfd_link_info *info, asection *isec) |
ad8e1ba5 AM |
11488 | { |
11489 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
d77c8a4b | 11490 | bfd_vma addr, off, limit; |
ad8e1ba5 | 11491 | |
4dfe6ac6 NC |
11492 | if (htab == NULL) |
11493 | return FALSE; | |
11494 | ||
927be08e | 11495 | if (!htab->second_toc_pass) |
4c52953f | 11496 | { |
927be08e | 11497 | /* Keep track of the first .toc or .got section for this input bfd. */ |
a4fd3de5 AM |
11498 | bfd_boolean new_bfd = htab->toc_bfd != isec->owner; |
11499 | ||
11500 | if (new_bfd) | |
bf102f86 AM |
11501 | { |
11502 | htab->toc_bfd = isec->owner; | |
11503 | htab->toc_first_sec = isec; | |
11504 | } | |
927be08e | 11505 | |
bf102f86 AM |
11506 | addr = isec->output_offset + isec->output_section->vma; |
11507 | off = addr - htab->toc_curr; | |
d77c8a4b AM |
11508 | limit = 0x80008000; |
11509 | if (ppc64_elf_tdata (isec->owner)->has_small_toc_reloc) | |
11510 | limit = 0x10000; | |
11511 | if (off + isec->size > limit) | |
bf102f86 AM |
11512 | { |
11513 | addr = (htab->toc_first_sec->output_offset | |
11514 | + htab->toc_first_sec->output_section->vma); | |
11515 | htab->toc_curr = addr; | |
a27e685f | 11516 | htab->toc_curr &= -TOC_BASE_ALIGN; |
bf102f86 | 11517 | } |
99877b66 | 11518 | |
927be08e AM |
11519 | /* toc_curr is the base address of this toc group. Set elf_gp |
11520 | for the input section to be the offset relative to the | |
11521 | output toc base plus 0x8000. Making the input elf_gp an | |
11522 | offset allows us to move the toc as a whole without | |
11523 | recalculating input elf_gp. */ | |
06bcf541 | 11524 | off = htab->toc_curr - elf_gp (info->output_bfd); |
927be08e AM |
11525 | off += TOC_BASE_OFF; |
11526 | ||
11527 | /* Die if someone uses a linker script that doesn't keep input | |
11528 | file .toc and .got together. */ | |
a4fd3de5 AM |
11529 | if (new_bfd |
11530 | && elf_gp (isec->owner) != 0 | |
927be08e AM |
11531 | && elf_gp (isec->owner) != off) |
11532 | return FALSE; | |
11533 | ||
11534 | elf_gp (isec->owner) = off; | |
11535 | return TRUE; | |
4c52953f | 11536 | } |
927be08e AM |
11537 | |
11538 | /* During the second pass toc_first_sec points to the start of | |
11539 | a toc group, and toc_curr is used to track the old elf_gp. | |
11540 | We use toc_bfd to ensure we only look at each bfd once. */ | |
11541 | if (htab->toc_bfd == isec->owner) | |
11542 | return TRUE; | |
11543 | htab->toc_bfd = isec->owner; | |
11544 | ||
11545 | if (htab->toc_first_sec == NULL | |
11546 | || htab->toc_curr != elf_gp (isec->owner)) | |
11547 | { | |
11548 | htab->toc_curr = elf_gp (isec->owner); | |
11549 | htab->toc_first_sec = isec; | |
11550 | } | |
11551 | addr = (htab->toc_first_sec->output_offset | |
11552 | + htab->toc_first_sec->output_section->vma); | |
06bcf541 | 11553 | off = addr - elf_gp (info->output_bfd) + TOC_BASE_OFF; |
927be08e AM |
11554 | elf_gp (isec->owner) = off; |
11555 | ||
11556 | return TRUE; | |
ad8e1ba5 AM |
11557 | } |
11558 | ||
927be08e AM |
11559 | /* Called via elf_link_hash_traverse to merge GOT entries for global |
11560 | symbol H. */ | |
11561 | ||
11562 | static bfd_boolean | |
11563 | merge_global_got (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED) | |
11564 | { | |
11565 | if (h->root.type == bfd_link_hash_indirect) | |
11566 | return TRUE; | |
11567 | ||
927be08e AM |
11568 | merge_got_entries (&h->got.glist); |
11569 | ||
11570 | return TRUE; | |
11571 | } | |
11572 | ||
11573 | /* Called via elf_link_hash_traverse to allocate GOT entries for global | |
11574 | symbol H. */ | |
11575 | ||
11576 | static bfd_boolean | |
11577 | reallocate_got (struct elf_link_hash_entry *h, void *inf) | |
11578 | { | |
11579 | struct got_entry *gent; | |
11580 | ||
11581 | if (h->root.type == bfd_link_hash_indirect) | |
11582 | return TRUE; | |
11583 | ||
927be08e AM |
11584 | for (gent = h->got.glist; gent != NULL; gent = gent->next) |
11585 | if (!gent->is_indirect) | |
11586 | allocate_got (h, (struct bfd_link_info *) inf, gent); | |
11587 | return TRUE; | |
11588 | } | |
11589 | ||
11590 | /* Called on the first multitoc pass after the last call to | |
11591 | ppc64_elf_next_toc_section. This function removes duplicate GOT | |
11592 | entries. */ | |
11593 | ||
11594 | bfd_boolean | |
11595 | ppc64_elf_layout_multitoc (struct bfd_link_info *info) | |
ad8e1ba5 AM |
11596 | { |
11597 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
927be08e AM |
11598 | struct bfd *ibfd, *ibfd2; |
11599 | bfd_boolean done_something; | |
11600 | ||
11601 | htab->multi_toc_needed = htab->toc_curr != elf_gp (info->output_bfd); | |
ad8e1ba5 | 11602 | |
7865406b AM |
11603 | if (!htab->do_multi_toc) |
11604 | return FALSE; | |
11605 | ||
d0fae19d | 11606 | /* Merge global sym got entries within a toc group. */ |
927be08e AM |
11607 | elf_link_hash_traverse (&htab->elf, merge_global_got, info); |
11608 | ||
11609 | /* And tlsld_got. */ | |
c72f2fb2 | 11610 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
927be08e AM |
11611 | { |
11612 | struct got_entry *ent, *ent2; | |
11613 | ||
11614 | if (!is_ppc64_elf (ibfd)) | |
11615 | continue; | |
11616 | ||
11617 | ent = ppc64_tlsld_got (ibfd); | |
11618 | if (!ent->is_indirect | |
11619 | && ent->got.offset != (bfd_vma) -1) | |
11620 | { | |
c72f2fb2 | 11621 | for (ibfd2 = ibfd->link.next; ibfd2 != NULL; ibfd2 = ibfd2->link.next) |
927be08e AM |
11622 | { |
11623 | if (!is_ppc64_elf (ibfd2)) | |
11624 | continue; | |
11625 | ||
11626 | ent2 = ppc64_tlsld_got (ibfd2); | |
11627 | if (!ent2->is_indirect | |
11628 | && ent2->got.offset != (bfd_vma) -1 | |
11629 | && elf_gp (ibfd2) == elf_gp (ibfd)) | |
11630 | { | |
11631 | ent2->is_indirect = TRUE; | |
11632 | ent2->got.ent = ent; | |
11633 | } | |
11634 | } | |
11635 | } | |
11636 | } | |
11637 | ||
11638 | /* Zap sizes of got sections. */ | |
33e44f2e AM |
11639 | htab->elf.irelplt->rawsize = htab->elf.irelplt->size; |
11640 | htab->elf.irelplt->size -= htab->got_reli_size; | |
927be08e AM |
11641 | htab->got_reli_size = 0; |
11642 | ||
c72f2fb2 | 11643 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
927be08e AM |
11644 | { |
11645 | asection *got, *relgot; | |
11646 | ||
11647 | if (!is_ppc64_elf (ibfd)) | |
11648 | continue; | |
11649 | ||
11650 | got = ppc64_elf_tdata (ibfd)->got; | |
11651 | if (got != NULL) | |
11652 | { | |
11653 | got->rawsize = got->size; | |
11654 | got->size = 0; | |
11655 | relgot = ppc64_elf_tdata (ibfd)->relgot; | |
11656 | relgot->rawsize = relgot->size; | |
11657 | relgot->size = 0; | |
11658 | } | |
11659 | } | |
11660 | ||
11661 | /* Now reallocate the got, local syms first. We don't need to | |
11662 | allocate section contents again since we never increase size. */ | |
c72f2fb2 | 11663 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
927be08e AM |
11664 | { |
11665 | struct got_entry **lgot_ents; | |
11666 | struct got_entry **end_lgot_ents; | |
11667 | struct plt_entry **local_plt; | |
11668 | struct plt_entry **end_local_plt; | |
f961d9dd | 11669 | unsigned char *lgot_masks; |
927be08e AM |
11670 | bfd_size_type locsymcount; |
11671 | Elf_Internal_Shdr *symtab_hdr; | |
19e08130 | 11672 | asection *s; |
927be08e AM |
11673 | |
11674 | if (!is_ppc64_elf (ibfd)) | |
11675 | continue; | |
11676 | ||
11677 | lgot_ents = elf_local_got_ents (ibfd); | |
11678 | if (!lgot_ents) | |
11679 | continue; | |
11680 | ||
11681 | symtab_hdr = &elf_symtab_hdr (ibfd); | |
11682 | locsymcount = symtab_hdr->sh_info; | |
11683 | end_lgot_ents = lgot_ents + locsymcount; | |
11684 | local_plt = (struct plt_entry **) end_lgot_ents; | |
11685 | end_local_plt = local_plt + locsymcount; | |
f961d9dd | 11686 | lgot_masks = (unsigned char *) end_local_plt; |
927be08e | 11687 | s = ppc64_elf_tdata (ibfd)->got; |
927be08e AM |
11688 | for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks) |
11689 | { | |
11690 | struct got_entry *ent; | |
11691 | ||
11692 | for (ent = *lgot_ents; ent != NULL; ent = ent->next) | |
d0fae19d | 11693 | { |
19e08130 AM |
11694 | unsigned int ent_size = 8; |
11695 | unsigned int rel_size = sizeof (Elf64_External_Rela); | |
11696 | ||
d0fae19d AM |
11697 | ent->got.offset = s->size; |
11698 | if ((ent->tls_type & *lgot_masks & TLS_GD) != 0) | |
d0fae19d | 11699 | { |
19e08130 AM |
11700 | ent_size *= 2; |
11701 | rel_size *= 2; | |
11702 | } | |
11703 | s->size += ent_size; | |
11704 | if ((*lgot_masks & PLT_IFUNC) != 0) | |
11705 | { | |
33e44f2e | 11706 | htab->elf.irelplt->size += rel_size; |
19e08130 AM |
11707 | htab->got_reli_size += rel_size; |
11708 | } | |
6a3858a6 AM |
11709 | else if (bfd_link_pic (info) |
11710 | && !((ent->tls_type & TLS_TPREL) != 0 | |
11711 | && bfd_link_executable (info))) | |
19e08130 AM |
11712 | { |
11713 | asection *srel = ppc64_elf_tdata (ibfd)->relgot; | |
11714 | srel->size += rel_size; | |
d0fae19d AM |
11715 | } |
11716 | } | |
927be08e AM |
11717 | } |
11718 | } | |
11719 | ||
11720 | elf_link_hash_traverse (&htab->elf, reallocate_got, info); | |
11721 | ||
c72f2fb2 | 11722 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
927be08e AM |
11723 | { |
11724 | struct got_entry *ent; | |
11725 | ||
11726 | if (!is_ppc64_elf (ibfd)) | |
11727 | continue; | |
11728 | ||
11729 | ent = ppc64_tlsld_got (ibfd); | |
11730 | if (!ent->is_indirect | |
11731 | && ent->got.offset != (bfd_vma) -1) | |
11732 | { | |
11733 | asection *s = ppc64_elf_tdata (ibfd)->got; | |
11734 | ent->got.offset = s->size; | |
11735 | s->size += 16; | |
0e1862bb | 11736 | if (bfd_link_pic (info)) |
927be08e AM |
11737 | { |
11738 | asection *srel = ppc64_elf_tdata (ibfd)->relgot; | |
11739 | srel->size += sizeof (Elf64_External_Rela); | |
11740 | } | |
11741 | } | |
11742 | } | |
11743 | ||
33e44f2e | 11744 | done_something = htab->elf.irelplt->rawsize != htab->elf.irelplt->size; |
927be08e | 11745 | if (!done_something) |
c72f2fb2 | 11746 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
927be08e AM |
11747 | { |
11748 | asection *got; | |
11749 | ||
11750 | if (!is_ppc64_elf (ibfd)) | |
11751 | continue; | |
11752 | ||
11753 | got = ppc64_elf_tdata (ibfd)->got; | |
11754 | if (got != NULL) | |
11755 | { | |
11756 | done_something = got->rawsize != got->size; | |
11757 | if (done_something) | |
11758 | break; | |
11759 | } | |
11760 | } | |
11761 | ||
11762 | if (done_something) | |
e7d1c40c | 11763 | (*htab->params->layout_sections_again) (); |
927be08e AM |
11764 | |
11765 | /* Set up for second pass over toc sections to recalculate elf_gp | |
11766 | on input sections. */ | |
11767 | htab->toc_bfd = NULL; | |
11768 | htab->toc_first_sec = NULL; | |
11769 | htab->second_toc_pass = TRUE; | |
11770 | return done_something; | |
11771 | } | |
11772 | ||
11773 | /* Called after second pass of multitoc partitioning. */ | |
11774 | ||
11775 | void | |
11776 | ppc64_elf_finish_multitoc_partition (struct bfd_link_info *info) | |
11777 | { | |
11778 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
11779 | ||
11780 | /* After the second pass, toc_curr tracks the TOC offset used | |
11781 | for code sections below in ppc64_elf_next_input_section. */ | |
3d6f9012 | 11782 | htab->toc_curr = TOC_BASE_OFF; |
ad8e1ba5 AM |
11783 | } |
11784 | ||
9b5ecbd0 AM |
11785 | /* No toc references were found in ISEC. If the code in ISEC makes no |
11786 | calls, then there's no need to use toc adjusting stubs when branching | |
11787 | into ISEC. Actually, indirect calls from ISEC are OK as they will | |
4c52953f AM |
11788 | load r2. Returns -1 on error, 0 for no stub needed, 1 for stub |
11789 | needed, and 2 if a cyclical call-graph was found but no other reason | |
11790 | for a stub was detected. If called from the top level, a return of | |
11791 | 2 means the same as a return of 0. */ | |
9b5ecbd0 AM |
11792 | |
11793 | static int | |
4ce794b7 | 11794 | toc_adjusting_stub_needed (struct bfd_link_info *info, asection *isec) |
9b5ecbd0 | 11795 | { |
9b5ecbd0 | 11796 | int ret; |
70cc837d AM |
11797 | |
11798 | /* Mark this section as checked. */ | |
11799 | isec->call_check_done = 1; | |
9b5ecbd0 | 11800 | |
772119ce AM |
11801 | /* We know none of our code bearing sections will need toc stubs. */ |
11802 | if ((isec->flags & SEC_LINKER_CREATED) != 0) | |
11803 | return 0; | |
11804 | ||
eea6121a | 11805 | if (isec->size == 0) |
082c50f8 AM |
11806 | return 0; |
11807 | ||
4c52953f AM |
11808 | if (isec->output_section == NULL) |
11809 | return 0; | |
11810 | ||
4c52953f | 11811 | ret = 0; |
70cc837d | 11812 | if (isec->reloc_count != 0) |
9b5ecbd0 | 11813 | { |
70cc837d AM |
11814 | Elf_Internal_Rela *relstart, *rel; |
11815 | Elf_Internal_Sym *local_syms; | |
11816 | struct ppc_link_hash_table *htab; | |
2917689a | 11817 | |
70cc837d AM |
11818 | relstart = _bfd_elf_link_read_relocs (isec->owner, isec, NULL, NULL, |
11819 | info->keep_memory); | |
11820 | if (relstart == NULL) | |
11821 | return -1; | |
90aecf7a | 11822 | |
70cc837d AM |
11823 | /* Look for branches to outside of this section. */ |
11824 | local_syms = NULL; | |
11825 | htab = ppc_hash_table (info); | |
11826 | if (htab == NULL) | |
11827 | return -1; | |
4c52953f | 11828 | |
70cc837d | 11829 | for (rel = relstart; rel < relstart + isec->reloc_count; ++rel) |
4c52953f | 11830 | { |
70cc837d AM |
11831 | enum elf_ppc64_reloc_type r_type; |
11832 | unsigned long r_symndx; | |
11833 | struct elf_link_hash_entry *h; | |
11834 | struct ppc_link_hash_entry *eh; | |
11835 | Elf_Internal_Sym *sym; | |
11836 | asection *sym_sec; | |
11837 | struct _opd_sec_data *opd; | |
11838 | bfd_vma sym_value; | |
11839 | bfd_vma dest; | |
11840 | ||
11841 | r_type = ELF64_R_TYPE (rel->r_info); | |
11842 | if (r_type != R_PPC64_REL24 | |
11843 | && r_type != R_PPC64_REL14 | |
11844 | && r_type != R_PPC64_REL14_BRTAKEN | |
11845 | && r_type != R_PPC64_REL14_BRNTAKEN) | |
11846 | continue; | |
4c52953f | 11847 | |
70cc837d AM |
11848 | r_symndx = ELF64_R_SYM (rel->r_info); |
11849 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, r_symndx, | |
11850 | isec->owner)) | |
4c52953f | 11851 | { |
70cc837d AM |
11852 | ret = -1; |
11853 | break; | |
11854 | } | |
4c52953f | 11855 | |
70cc837d AM |
11856 | /* Calls to dynamic lib functions go through a plt call stub |
11857 | that uses r2. */ | |
11858 | eh = (struct ppc_link_hash_entry *) h; | |
11859 | if (eh != NULL | |
11860 | && (eh->elf.plt.plist != NULL | |
11861 | || (eh->oh != NULL | |
11862 | && ppc_follow_link (eh->oh)->elf.plt.plist != NULL))) | |
11863 | { | |
11864 | ret = 1; | |
11865 | break; | |
4c52953f AM |
11866 | } |
11867 | ||
70cc837d AM |
11868 | if (sym_sec == NULL) |
11869 | /* Ignore other undefined symbols. */ | |
4c52953f | 11870 | continue; |
4c52953f | 11871 | |
70cc837d AM |
11872 | /* Assume branches to other sections not included in the |
11873 | link need stubs too, to cover -R and absolute syms. */ | |
11874 | if (sym_sec->output_section == NULL) | |
11875 | { | |
11876 | ret = 1; | |
11877 | break; | |
11878 | } | |
4c52953f | 11879 | |
70cc837d AM |
11880 | if (h == NULL) |
11881 | sym_value = sym->st_value; | |
11882 | else | |
11883 | { | |
11884 | if (h->root.type != bfd_link_hash_defined | |
11885 | && h->root.type != bfd_link_hash_defweak) | |
11886 | abort (); | |
11887 | sym_value = h->root.u.def.value; | |
11888 | } | |
11889 | sym_value += rel->r_addend; | |
4c52953f | 11890 | |
70cc837d AM |
11891 | /* If this branch reloc uses an opd sym, find the code section. */ |
11892 | opd = get_opd_info (sym_sec); | |
11893 | if (opd != NULL) | |
11894 | { | |
11895 | if (h == NULL && opd->adjust != NULL) | |
11896 | { | |
11897 | long adjust; | |
4c52953f | 11898 | |
92a9c616 | 11899 | adjust = opd->adjust[OPD_NDX (sym_value)]; |
70cc837d AM |
11900 | if (adjust == -1) |
11901 | /* Assume deleted functions won't ever be called. */ | |
11902 | continue; | |
11903 | sym_value += adjust; | |
11904 | } | |
4c52953f | 11905 | |
aef36ac1 AM |
11906 | dest = opd_entry_value (sym_sec, sym_value, |
11907 | &sym_sec, NULL, FALSE); | |
70cc837d AM |
11908 | if (dest == (bfd_vma) -1) |
11909 | continue; | |
11910 | } | |
11911 | else | |
11912 | dest = (sym_value | |
11913 | + sym_sec->output_offset | |
11914 | + sym_sec->output_section->vma); | |
4c52953f | 11915 | |
70cc837d AM |
11916 | /* Ignore branch to self. */ |
11917 | if (sym_sec == isec) | |
11918 | continue; | |
4c52953f | 11919 | |
70cc837d AM |
11920 | /* If the called function uses the toc, we need a stub. */ |
11921 | if (sym_sec->has_toc_reloc | |
11922 | || sym_sec->makes_toc_func_call) | |
4c52953f | 11923 | { |
70cc837d | 11924 | ret = 1; |
4c52953f AM |
11925 | break; |
11926 | } | |
70cc837d AM |
11927 | |
11928 | /* Assume any branch that needs a long branch stub might in fact | |
11929 | need a plt_branch stub. A plt_branch stub uses r2. */ | |
11930 | else if (dest - (isec->output_offset | |
11931 | + isec->output_section->vma | |
6911b7dc AM |
11932 | + rel->r_offset) + (1 << 25) |
11933 | >= (2u << 25) - PPC64_LOCAL_ENTRY_OFFSET (h | |
11934 | ? h->other | |
11935 | : sym->st_other)) | |
4c52953f | 11936 | { |
70cc837d AM |
11937 | ret = 1; |
11938 | break; | |
11939 | } | |
11940 | ||
11941 | /* If calling back to a section in the process of being | |
11942 | tested, we can't say for sure that no toc adjusting stubs | |
11943 | are needed, so don't return zero. */ | |
11944 | else if (sym_sec->call_check_in_progress) | |
11945 | ret = 2; | |
11946 | ||
11947 | /* Branches to another section that itself doesn't have any TOC | |
11948 | references are OK. Recursively call ourselves to check. */ | |
11949 | else if (!sym_sec->call_check_done) | |
11950 | { | |
11951 | int recur; | |
11952 | ||
11953 | /* Mark current section as indeterminate, so that other | |
11954 | sections that call back to current won't be marked as | |
11955 | known. */ | |
11956 | isec->call_check_in_progress = 1; | |
11957 | recur = toc_adjusting_stub_needed (info, sym_sec); | |
11958 | isec->call_check_in_progress = 0; | |
11959 | ||
4c52953f AM |
11960 | if (recur != 0) |
11961 | { | |
70cc837d AM |
11962 | ret = recur; |
11963 | if (recur != 2) | |
11964 | break; | |
4c52953f AM |
11965 | } |
11966 | } | |
4c52953f | 11967 | } |
70cc837d AM |
11968 | |
11969 | if (local_syms != NULL | |
11970 | && (elf_symtab_hdr (isec->owner).contents | |
11971 | != (unsigned char *) local_syms)) | |
11972 | free (local_syms); | |
11973 | if (elf_section_data (isec)->relocs != relstart) | |
11974 | free (relstart); | |
9b5ecbd0 AM |
11975 | } |
11976 | ||
70cc837d AM |
11977 | if ((ret & 1) == 0 |
11978 | && isec->map_head.s != NULL | |
11979 | && (strcmp (isec->output_section->name, ".init") == 0 | |
11980 | || strcmp (isec->output_section->name, ".fini") == 0)) | |
11981 | { | |
11982 | if (isec->map_head.s->has_toc_reloc | |
11983 | || isec->map_head.s->makes_toc_func_call) | |
11984 | ret = 1; | |
11985 | else if (!isec->map_head.s->call_check_done) | |
11986 | { | |
11987 | int recur; | |
11988 | isec->call_check_in_progress = 1; | |
11989 | recur = toc_adjusting_stub_needed (info, isec->map_head.s); | |
11990 | isec->call_check_in_progress = 0; | |
11991 | if (recur != 0) | |
11992 | ret = recur; | |
11993 | } | |
11994 | } | |
11995 | ||
11996 | if (ret == 1) | |
11997 | isec->makes_toc_func_call = 1; | |
4c52953f | 11998 | |
9b5ecbd0 AM |
11999 | return ret; |
12000 | } | |
12001 | ||
721956f4 AM |
12002 | /* The linker repeatedly calls this function for each input section, |
12003 | in the order that input sections are linked into output sections. | |
12004 | Build lists of input sections to determine groupings between which | |
12005 | we may insert linker stubs. */ | |
12006 | ||
9b5ecbd0 | 12007 | bfd_boolean |
4ce794b7 | 12008 | ppc64_elf_next_input_section (struct bfd_link_info *info, asection *isec) |
721956f4 AM |
12009 | { |
12010 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
12011 | ||
4dfe6ac6 NC |
12012 | if (htab == NULL) |
12013 | return FALSE; | |
12014 | ||
734b6cf9 | 12015 | if ((isec->output_section->flags & SEC_CODE) != 0 |
6f20ed8a | 12016 | && isec->output_section->id < htab->sec_info_arr_size) |
721956f4 | 12017 | { |
3d6f9012 AM |
12018 | /* This happens to make the list in reverse order, |
12019 | which is what we want. */ | |
6f20ed8a AM |
12020 | htab->sec_info[isec->id].u.list |
12021 | = htab->sec_info[isec->output_section->id].u.list; | |
12022 | htab->sec_info[isec->output_section->id].u.list = isec; | |
721956f4 | 12023 | } |
ad8e1ba5 | 12024 | |
4c52953f | 12025 | if (htab->multi_toc_needed) |
9b5ecbd0 | 12026 | { |
8b974ba3 AM |
12027 | /* Analyse sections that aren't already flagged as needing a |
12028 | valid toc pointer. Exclude .fixup for the linux kernel. | |
12029 | .fixup contains branches, but only back to the function that | |
12030 | hit an exception. */ | |
12031 | if (!(isec->has_toc_reloc | |
12032 | || (isec->flags & SEC_CODE) == 0 | |
12033 | || strcmp (isec->name, ".fixup") == 0 | |
12034 | || isec->call_check_done)) | |
12035 | { | |
12036 | if (toc_adjusting_stub_needed (info, isec) < 0) | |
6683a28d | 12037 | return FALSE; |
8b974ba3 AM |
12038 | } |
12039 | /* Make all sections use the TOC assigned for this object file. | |
12040 | This will be wrong for pasted sections; We fix that in | |
12041 | check_pasted_section(). */ | |
12042 | if (elf_gp (isec->owner) != 0) | |
12043 | htab->toc_curr = elf_gp (isec->owner); | |
12044 | } | |
12045 | ||
6f20ed8a | 12046 | htab->sec_info[isec->id].toc_off = htab->toc_curr; |
9b5ecbd0 | 12047 | return TRUE; |
721956f4 AM |
12048 | } |
12049 | ||
70cc837d AM |
12050 | /* Check that all .init and .fini sections use the same toc, if they |
12051 | have toc relocs. */ | |
12052 | ||
12053 | static bfd_boolean | |
12054 | check_pasted_section (struct bfd_link_info *info, const char *name) | |
12055 | { | |
12056 | asection *o = bfd_get_section_by_name (info->output_bfd, name); | |
12057 | ||
12058 | if (o != NULL) | |
12059 | { | |
12060 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
12061 | bfd_vma toc_off = 0; | |
12062 | asection *i; | |
12063 | ||
12064 | for (i = o->map_head.s; i != NULL; i = i->map_head.s) | |
12065 | if (i->has_toc_reloc) | |
12066 | { | |
12067 | if (toc_off == 0) | |
6f20ed8a AM |
12068 | toc_off = htab->sec_info[i->id].toc_off; |
12069 | else if (toc_off != htab->sec_info[i->id].toc_off) | |
70cc837d AM |
12070 | return FALSE; |
12071 | } | |
6683a28d AM |
12072 | |
12073 | if (toc_off == 0) | |
12074 | for (i = o->map_head.s; i != NULL; i = i->map_head.s) | |
12075 | if (i->makes_toc_func_call) | |
12076 | { | |
6f20ed8a | 12077 | toc_off = htab->sec_info[i->id].toc_off; |
6683a28d AM |
12078 | break; |
12079 | } | |
12080 | ||
70cc837d AM |
12081 | /* Make sure the whole pasted function uses the same toc offset. */ |
12082 | if (toc_off != 0) | |
12083 | for (i = o->map_head.s; i != NULL; i = i->map_head.s) | |
6f20ed8a | 12084 | htab->sec_info[i->id].toc_off = toc_off; |
70cc837d AM |
12085 | } |
12086 | return TRUE; | |
12087 | } | |
12088 | ||
12089 | bfd_boolean | |
12090 | ppc64_elf_check_init_fini (struct bfd_link_info *info) | |
12091 | { | |
12092 | return (check_pasted_section (info, ".init") | |
12093 | & check_pasted_section (info, ".fini")); | |
12094 | } | |
12095 | ||
721956f4 AM |
12096 | /* See whether we can group stub sections together. Grouping stub |
12097 | sections may result in fewer stubs. More importantly, we need to | |
12098 | put all .init* and .fini* stubs at the beginning of the .init or | |
12099 | .fini output sections respectively, because glibc splits the | |
12100 | _init and _fini functions into multiple parts. Putting a stub in | |
12101 | the middle of a function is not a good idea. */ | |
12102 | ||
6f20ed8a AM |
12103 | static bfd_boolean |
12104 | group_sections (struct bfd_link_info *info, | |
4ce794b7 AM |
12105 | bfd_size_type stub_group_size, |
12106 | bfd_boolean stubs_always_before_branch) | |
721956f4 | 12107 | { |
6f20ed8a AM |
12108 | struct ppc_link_hash_table *htab; |
12109 | asection *osec; | |
7c8fe5c4 AM |
12110 | bfd_boolean suppress_size_errors; |
12111 | ||
6f20ed8a AM |
12112 | htab = ppc_hash_table (info); |
12113 | if (htab == NULL) | |
12114 | return FALSE; | |
12115 | ||
7c8fe5c4 | 12116 | suppress_size_errors = FALSE; |
7c8fe5c4 AM |
12117 | if (stub_group_size == 1) |
12118 | { | |
12119 | /* Default values. */ | |
12120 | if (stubs_always_before_branch) | |
09f92717 | 12121 | stub_group_size = 0x1e00000; |
7c8fe5c4 | 12122 | else |
09f92717 | 12123 | stub_group_size = 0x1c00000; |
7c8fe5c4 AM |
12124 | suppress_size_errors = TRUE; |
12125 | } | |
12126 | ||
6f20ed8a | 12127 | for (osec = info->output_bfd->sections; osec != NULL; osec = osec->next) |
721956f4 | 12128 | { |
6f20ed8a AM |
12129 | asection *tail; |
12130 | ||
12131 | if (osec->id >= htab->sec_info_arr_size) | |
12132 | continue; | |
12133 | ||
12134 | tail = htab->sec_info[osec->id].u.list; | |
734b6cf9 | 12135 | while (tail != NULL) |
721956f4 | 12136 | { |
734b6cf9 AM |
12137 | asection *curr; |
12138 | asection *prev; | |
12139 | bfd_size_type total; | |
12140 | bfd_boolean big_sec; | |
12141 | bfd_vma curr_toc; | |
6f20ed8a | 12142 | struct map_stub *group; |
09f92717 | 12143 | bfd_size_type group_size; |
734b6cf9 AM |
12144 | |
12145 | curr = tail; | |
eea6121a | 12146 | total = tail->size; |
09f92717 AM |
12147 | group_size = (ppc64_elf_section_data (tail) != NULL |
12148 | && ppc64_elf_section_data (tail)->has_14bit_branch | |
12149 | ? stub_group_size >> 10 : stub_group_size); | |
12150 | ||
12151 | big_sec = total > group_size; | |
7c8fe5c4 | 12152 | if (big_sec && !suppress_size_errors) |
695344c0 | 12153 | /* xgettext:c-format */ |
871b3ab2 | 12154 | _bfd_error_handler (_("%pB section %pA exceeds stub group size"), |
4eca0228 | 12155 | tail->owner, tail); |
6f20ed8a | 12156 | curr_toc = htab->sec_info[tail->id].toc_off; |
734b6cf9 | 12157 | |
6f20ed8a | 12158 | while ((prev = htab->sec_info[curr->id].u.list) != NULL |
734b6cf9 | 12159 | && ((total += curr->output_offset - prev->output_offset) |
6bee8834 AM |
12160 | < (ppc64_elf_section_data (prev) != NULL |
12161 | && ppc64_elf_section_data (prev)->has_14bit_branch | |
09f92717 | 12162 | ? (group_size = stub_group_size >> 10) : group_size)) |
6f20ed8a | 12163 | && htab->sec_info[prev->id].toc_off == curr_toc) |
734b6cf9 AM |
12164 | curr = prev; |
12165 | ||
12166 | /* OK, the size from the start of CURR to the end is less | |
09f92717 | 12167 | than group_size and thus can be handled by one stub |
734b6cf9 | 12168 | section. (or the tail section is itself larger than |
09f92717 AM |
12169 | group_size, in which case we may be toast.) We should |
12170 | really be keeping track of the total size of stubs added | |
12171 | here, as stubs contribute to the final output section | |
12172 | size. That's a little tricky, and this way will only | |
12173 | break if stubs added make the total size more than 2^25, | |
12174 | ie. for the default stub_group_size, if stubs total more | |
12175 | than 2097152 bytes, or nearly 75000 plt call stubs. */ | |
6f20ed8a AM |
12176 | group = bfd_alloc (curr->owner, sizeof (*group)); |
12177 | if (group == NULL) | |
12178 | return FALSE; | |
12179 | group->link_sec = curr; | |
12180 | group->stub_sec = NULL; | |
a4b6fadd | 12181 | group->needs_save_res = 0; |
d4aaa2a0 | 12182 | group->tls_get_addr_opt_bctrl = -1u; |
a4b6fadd AM |
12183 | group->next = htab->group; |
12184 | htab->group = group; | |
734b6cf9 | 12185 | do |
721956f4 | 12186 | { |
6f20ed8a | 12187 | prev = htab->sec_info[tail->id].u.list; |
734b6cf9 | 12188 | /* Set up this stub group. */ |
6f20ed8a | 12189 | htab->sec_info[tail->id].u.group = group; |
721956f4 | 12190 | } |
734b6cf9 AM |
12191 | while (tail != curr && (tail = prev) != NULL); |
12192 | ||
09f92717 | 12193 | /* But wait, there's more! Input sections up to group_size |
734b6cf9 AM |
12194 | bytes before the stub section can be handled by it too. |
12195 | Don't do this if we have a really large section after the | |
12196 | stubs, as adding more stubs increases the chance that | |
12197 | branches may not reach into the stub section. */ | |
12198 | if (!stubs_always_before_branch && !big_sec) | |
12199 | { | |
12200 | total = 0; | |
12201 | while (prev != NULL | |
12202 | && ((total += tail->output_offset - prev->output_offset) | |
6bee8834 AM |
12203 | < (ppc64_elf_section_data (prev) != NULL |
12204 | && ppc64_elf_section_data (prev)->has_14bit_branch | |
09f92717 | 12205 | ? (group_size = stub_group_size >> 10) : group_size)) |
6f20ed8a | 12206 | && htab->sec_info[prev->id].toc_off == curr_toc) |
734b6cf9 AM |
12207 | { |
12208 | tail = prev; | |
6f20ed8a AM |
12209 | prev = htab->sec_info[tail->id].u.list; |
12210 | htab->sec_info[tail->id].u.group = group; | |
734b6cf9 AM |
12211 | } |
12212 | } | |
12213 | tail = prev; | |
721956f4 AM |
12214 | } |
12215 | } | |
6f20ed8a | 12216 | return TRUE; |
721956f4 AM |
12217 | } |
12218 | ||
58d180e8 AM |
12219 | static const unsigned char glink_eh_frame_cie[] = |
12220 | { | |
12221 | 0, 0, 0, 16, /* length. */ | |
12222 | 0, 0, 0, 0, /* id. */ | |
12223 | 1, /* CIE version. */ | |
12224 | 'z', 'R', 0, /* Augmentation string. */ | |
12225 | 4, /* Code alignment. */ | |
12226 | 0x78, /* Data alignment. */ | |
12227 | 65, /* RA reg. */ | |
12228 | 1, /* Augmentation size. */ | |
12229 | DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding. */ | |
2e0ce1c8 | 12230 | DW_CFA_def_cfa, 1, 0 /* def_cfa: r1 offset 0. */ |
58d180e8 AM |
12231 | }; |
12232 | ||
d4aaa2a0 AM |
12233 | static size_t |
12234 | stub_eh_frame_size (struct map_stub *group, size_t align) | |
12235 | { | |
12236 | size_t this_size = 17; | |
12237 | if (group->tls_get_addr_opt_bctrl != -1u) | |
12238 | { | |
12239 | unsigned int to_bctrl = group->tls_get_addr_opt_bctrl / 4; | |
12240 | if (to_bctrl < 64) | |
12241 | this_size += 1; | |
12242 | else if (to_bctrl < 256) | |
12243 | this_size += 2; | |
12244 | else if (to_bctrl < 65536) | |
12245 | this_size += 3; | |
12246 | else | |
12247 | this_size += 5; | |
12248 | this_size += 6; | |
12249 | } | |
12250 | this_size = (this_size + align - 1) & -align; | |
12251 | return this_size; | |
12252 | } | |
12253 | ||
d969d15f AM |
12254 | /* Stripping output sections is normally done before dynamic section |
12255 | symbols have been allocated. This function is called later, and | |
12256 | handles cases like htab->brlt which is mapped to its own output | |
12257 | section. */ | |
12258 | ||
12259 | static void | |
12260 | maybe_strip_output (struct bfd_link_info *info, asection *isec) | |
12261 | { | |
12262 | if (isec->size == 0 | |
12263 | && isec->output_section->size == 0 | |
53d8967a | 12264 | && !(isec->output_section->flags & SEC_KEEP) |
d969d15f AM |
12265 | && !bfd_section_removed_from_list (info->output_bfd, |
12266 | isec->output_section) | |
12267 | && elf_section_data (isec->output_section)->dynindx == 0) | |
12268 | { | |
12269 | isec->output_section->flags |= SEC_EXCLUDE; | |
12270 | bfd_section_list_remove (info->output_bfd, isec->output_section); | |
12271 | info->output_bfd->section_count--; | |
12272 | } | |
12273 | } | |
12274 | ||
721956f4 AM |
12275 | /* Determine and set the size of the stub section for a final link. |
12276 | ||
12277 | The basic idea here is to examine all the relocations looking for | |
12278 | PC-relative calls to a target that is unreachable with a "bl" | |
12279 | instruction. */ | |
12280 | ||
b34976b6 | 12281 | bfd_boolean |
e7d1c40c | 12282 | ppc64_elf_size_stubs (struct bfd_link_info *info) |
721956f4 AM |
12283 | { |
12284 | bfd_size_type stub_group_size; | |
b34976b6 | 12285 | bfd_boolean stubs_always_before_branch; |
721956f4 AM |
12286 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
12287 | ||
4dfe6ac6 NC |
12288 | if (htab == NULL) |
12289 | return FALSE; | |
12290 | ||
0e1862bb | 12291 | if (htab->params->plt_thread_safe == -1 && !bfd_link_executable (info)) |
e7d1c40c | 12292 | htab->params->plt_thread_safe = 1; |
b9e5796b | 12293 | if (!htab->opd_abi) |
e7d1c40c AM |
12294 | htab->params->plt_thread_safe = 0; |
12295 | else if (htab->params->plt_thread_safe == -1) | |
794e51c0 | 12296 | { |
e2458743 | 12297 | static const char *const thread_starter[] = |
794e51c0 AM |
12298 | { |
12299 | "pthread_create", | |
12300 | /* libstdc++ */ | |
12301 | "_ZNSt6thread15_M_start_threadESt10shared_ptrINS_10_Impl_baseEE", | |
12302 | /* librt */ | |
12303 | "aio_init", "aio_read", "aio_write", "aio_fsync", "lio_listio", | |
12304 | "mq_notify", "create_timer", | |
12305 | /* libanl */ | |
12306 | "getaddrinfo_a", | |
12307 | /* libgomp */ | |
2300b5a1 | 12308 | "GOMP_parallel", |
794e51c0 | 12309 | "GOMP_parallel_start", |
2300b5a1 | 12310 | "GOMP_parallel_loop_static", |
794e51c0 | 12311 | "GOMP_parallel_loop_static_start", |
2300b5a1 | 12312 | "GOMP_parallel_loop_dynamic", |
794e51c0 | 12313 | "GOMP_parallel_loop_dynamic_start", |
2300b5a1 | 12314 | "GOMP_parallel_loop_guided", |
794e51c0 | 12315 | "GOMP_parallel_loop_guided_start", |
2300b5a1 | 12316 | "GOMP_parallel_loop_runtime", |
794e51c0 | 12317 | "GOMP_parallel_loop_runtime_start", |
2300b5a1 | 12318 | "GOMP_parallel_sections", |
68ffbac6 | 12319 | "GOMP_parallel_sections_start", |
f9dffbf0 AM |
12320 | /* libgo */ |
12321 | "__go_go", | |
794e51c0 AM |
12322 | }; |
12323 | unsigned i; | |
12324 | ||
a4b6fadd | 12325 | for (i = 0; i < ARRAY_SIZE (thread_starter); i++) |
794e51c0 AM |
12326 | { |
12327 | struct elf_link_hash_entry *h; | |
12328 | h = elf_link_hash_lookup (&htab->elf, thread_starter[i], | |
12329 | FALSE, FALSE, TRUE); | |
e7d1c40c AM |
12330 | htab->params->plt_thread_safe = h != NULL && h->ref_regular; |
12331 | if (htab->params->plt_thread_safe) | |
794e51c0 AM |
12332 | break; |
12333 | } | |
12334 | } | |
e7d1c40c AM |
12335 | stubs_always_before_branch = htab->params->group_size < 0; |
12336 | if (htab->params->group_size < 0) | |
12337 | stub_group_size = -htab->params->group_size; | |
721956f4 | 12338 | else |
e7d1c40c | 12339 | stub_group_size = htab->params->group_size; |
721956f4 | 12340 | |
6f20ed8a AM |
12341 | if (!group_sections (info, stub_group_size, stubs_always_before_branch)) |
12342 | return FALSE; | |
721956f4 | 12343 | |
c9301e31 AM |
12344 | #define STUB_SHRINK_ITER 20 |
12345 | /* Loop until no stubs added. After iteration 20 of this loop we may | |
12346 | exit on a stub section shrinking. This is to break out of a | |
12347 | pathological case where adding stubs on one iteration decreases | |
12348 | section gaps (perhaps due to alignment), which then requires | |
12349 | fewer or smaller stubs on the next iteration. */ | |
12350 | ||
721956f4 AM |
12351 | while (1) |
12352 | { | |
12353 | bfd *input_bfd; | |
12354 | unsigned int bfd_indx; | |
a4b6fadd | 12355 | struct map_stub *group; |
721956f4 AM |
12356 | |
12357 | htab->stub_iteration += 1; | |
721956f4 AM |
12358 | |
12359 | for (input_bfd = info->input_bfds, bfd_indx = 0; | |
12360 | input_bfd != NULL; | |
c72f2fb2 | 12361 | input_bfd = input_bfd->link.next, bfd_indx++) |
721956f4 AM |
12362 | { |
12363 | Elf_Internal_Shdr *symtab_hdr; | |
12364 | asection *section; | |
6cdc0ccc | 12365 | Elf_Internal_Sym *local_syms = NULL; |
721956f4 | 12366 | |
0c8d6e5c | 12367 | if (!is_ppc64_elf (input_bfd)) |
67f93c31 AM |
12368 | continue; |
12369 | ||
721956f4 | 12370 | /* We'll need the symbol table in a second. */ |
0ffa91dd | 12371 | symtab_hdr = &elf_symtab_hdr (input_bfd); |
721956f4 AM |
12372 | if (symtab_hdr->sh_info == 0) |
12373 | continue; | |
12374 | ||
721956f4 AM |
12375 | /* Walk over each section attached to the input bfd. */ |
12376 | for (section = input_bfd->sections; | |
12377 | section != NULL; | |
12378 | section = section->next) | |
12379 | { | |
721956f4 | 12380 | Elf_Internal_Rela *internal_relocs, *irelaend, *irela; |
721956f4 AM |
12381 | |
12382 | /* If there aren't any relocs, then there's nothing more | |
12383 | to do. */ | |
12384 | if ((section->flags & SEC_RELOC) == 0 | |
12c0f757 AM |
12385 | || (section->flags & SEC_ALLOC) == 0 |
12386 | || (section->flags & SEC_LOAD) == 0 | |
12387 | || (section->flags & SEC_CODE) == 0 | |
721956f4 AM |
12388 | || section->reloc_count == 0) |
12389 | continue; | |
12390 | ||
12391 | /* If this section is a link-once section that will be | |
12392 | discarded, then don't create any stubs. */ | |
12393 | if (section->output_section == NULL | |
927be08e | 12394 | || section->output_section->owner != info->output_bfd) |
721956f4 AM |
12395 | continue; |
12396 | ||
1e2f5b6e AM |
12397 | /* Get the relocs. */ |
12398 | internal_relocs | |
4ce794b7 | 12399 | = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL, |
45d6a902 | 12400 | info->keep_memory); |
721956f4 | 12401 | if (internal_relocs == NULL) |
1e2f5b6e | 12402 | goto error_ret_free_local; |
721956f4 AM |
12403 | |
12404 | /* Now examine each relocation. */ | |
12405 | irela = internal_relocs; | |
12406 | irelaend = irela + section->reloc_count; | |
12407 | for (; irela < irelaend; irela++) | |
12408 | { | |
4ce794b7 AM |
12409 | enum elf_ppc64_reloc_type r_type; |
12410 | unsigned int r_indx; | |
721956f4 AM |
12411 | enum ppc_stub_type stub_type; |
12412 | struct ppc_stub_hash_entry *stub_entry; | |
8387904d | 12413 | asection *sym_sec, *code_sec; |
e054468f | 12414 | bfd_vma sym_value, code_value; |
721956f4 | 12415 | bfd_vma destination; |
6911b7dc | 12416 | unsigned long local_off; |
8843416a | 12417 | bfd_boolean ok_dest; |
721956f4 | 12418 | struct ppc_link_hash_entry *hash; |
8387904d | 12419 | struct ppc_link_hash_entry *fdh; |
411e1bfb AM |
12420 | struct elf_link_hash_entry *h; |
12421 | Elf_Internal_Sym *sym; | |
721956f4 AM |
12422 | char *stub_name; |
12423 | const asection *id_sec; | |
74f0fb50 | 12424 | struct _opd_sec_data *opd; |
e054468f | 12425 | struct plt_entry *plt_ent; |
721956f4 AM |
12426 | |
12427 | r_type = ELF64_R_TYPE (irela->r_info); | |
12428 | r_indx = ELF64_R_SYM (irela->r_info); | |
12429 | ||
4ce794b7 | 12430 | if (r_type >= R_PPC64_max) |
721956f4 AM |
12431 | { |
12432 | bfd_set_error (bfd_error_bad_value); | |
6cdc0ccc | 12433 | goto error_ret_free_internal; |
721956f4 AM |
12434 | } |
12435 | ||
12436 | /* Only look for stubs on branch instructions. */ | |
4ce794b7 AM |
12437 | if (r_type != R_PPC64_REL24 |
12438 | && r_type != R_PPC64_REL14 | |
12439 | && r_type != R_PPC64_REL14_BRTAKEN | |
12440 | && r_type != R_PPC64_REL14_BRNTAKEN) | |
721956f4 AM |
12441 | continue; |
12442 | ||
12443 | /* Now determine the call target, its name, value, | |
12444 | section. */ | |
411e1bfb AM |
12445 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, |
12446 | r_indx, input_bfd)) | |
12447 | goto error_ret_free_internal; | |
12448 | hash = (struct ppc_link_hash_entry *) h; | |
12449 | ||
8843416a | 12450 | ok_dest = FALSE; |
8387904d | 12451 | fdh = NULL; |
7fe2b9a6 | 12452 | sym_value = 0; |
411e1bfb | 12453 | if (hash == NULL) |
721956f4 | 12454 | { |
411e1bfb | 12455 | sym_value = sym->st_value; |
c27b8c2a AM |
12456 | if (sym_sec != NULL |
12457 | && sym_sec->output_section != NULL) | |
12458 | ok_dest = TRUE; | |
721956f4 | 12459 | } |
7fe2b9a6 AM |
12460 | else if (hash->elf.root.type == bfd_link_hash_defined |
12461 | || hash->elf.root.type == bfd_link_hash_defweak) | |
12462 | { | |
12463 | sym_value = hash->elf.root.u.def.value; | |
12464 | if (sym_sec->output_section != NULL) | |
12465 | ok_dest = TRUE; | |
12466 | } | |
12467 | else if (hash->elf.root.type == bfd_link_hash_undefweak | |
12468 | || hash->elf.root.type == bfd_link_hash_undefined) | |
721956f4 | 12469 | { |
99877b66 | 12470 | /* Recognise an old ABI func code entry sym, and |
7fe2b9a6 AM |
12471 | use the func descriptor sym instead if it is |
12472 | defined. */ | |
ceb1f1ef | 12473 | if (hash->elf.root.root.string[0] == '.' |
8c5b4e52 | 12474 | && hash->oh != NULL) |
8387904d | 12475 | { |
8c5b4e52 | 12476 | fdh = ppc_follow_link (hash->oh); |
8387904d AM |
12477 | if (fdh->elf.root.type == bfd_link_hash_defined |
12478 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
12479 | { | |
12480 | sym_sec = fdh->elf.root.u.def.section; | |
12481 | sym_value = fdh->elf.root.u.def.value; | |
12482 | if (sym_sec->output_section != NULL) | |
12483 | ok_dest = TRUE; | |
12484 | } | |
99877b66 AM |
12485 | else |
12486 | fdh = NULL; | |
8387904d | 12487 | } |
7fe2b9a6 AM |
12488 | } |
12489 | else | |
12490 | { | |
12491 | bfd_set_error (bfd_error_bad_value); | |
12492 | goto error_ret_free_internal; | |
721956f4 AM |
12493 | } |
12494 | ||
8843416a | 12495 | destination = 0; |
6911b7dc | 12496 | local_off = 0; |
8843416a AM |
12497 | if (ok_dest) |
12498 | { | |
12499 | sym_value += irela->r_addend; | |
12500 | destination = (sym_value | |
12501 | + sym_sec->output_offset | |
12502 | + sym_sec->output_section->vma); | |
6911b7dc AM |
12503 | local_off = PPC64_LOCAL_ENTRY_OFFSET (hash |
12504 | ? hash->elf.other | |
12505 | : sym->st_other); | |
8843416a AM |
12506 | } |
12507 | ||
8387904d | 12508 | code_sec = sym_sec; |
e054468f | 12509 | code_value = sym_value; |
74f0fb50 AM |
12510 | opd = get_opd_info (sym_sec); |
12511 | if (opd != NULL) | |
8387904d AM |
12512 | { |
12513 | bfd_vma dest; | |
12514 | ||
74f0fb50 | 12515 | if (hash == NULL && opd->adjust != NULL) |
8387904d | 12516 | { |
51aecdc5 | 12517 | long adjust = opd->adjust[OPD_NDX (sym_value)]; |
8387904d AM |
12518 | if (adjust == -1) |
12519 | continue; | |
e054468f | 12520 | code_value += adjust; |
8387904d AM |
12521 | sym_value += adjust; |
12522 | } | |
12523 | dest = opd_entry_value (sym_sec, sym_value, | |
aef36ac1 | 12524 | &code_sec, &code_value, FALSE); |
8387904d AM |
12525 | if (dest != (bfd_vma) -1) |
12526 | { | |
12527 | destination = dest; | |
12528 | if (fdh != NULL) | |
12529 | { | |
12530 | /* Fixup old ABI sym to point at code | |
12531 | entry. */ | |
99877b66 | 12532 | hash->elf.root.type = bfd_link_hash_defweak; |
8387904d | 12533 | hash->elf.root.u.def.section = code_sec; |
e054468f | 12534 | hash->elf.root.u.def.value = code_value; |
8387904d AM |
12535 | } |
12536 | } | |
12537 | } | |
12538 | ||
721956f4 | 12539 | /* Determine what (if any) linker stub is needed. */ |
e054468f | 12540 | plt_ent = NULL; |
721956f4 | 12541 | stub_type = ppc_type_of_stub (section, irela, &hash, |
6911b7dc AM |
12542 | &plt_ent, destination, |
12543 | local_off); | |
ad8e1ba5 AM |
12544 | |
12545 | if (stub_type != ppc_stub_plt_call) | |
12546 | { | |
12547 | /* Check whether we need a TOC adjusting stub. | |
12548 | Since the linker pastes together pieces from | |
12549 | different object files when creating the | |
12550 | _init and _fini functions, it may be that a | |
12551 | call to what looks like a local sym is in | |
12552 | fact a call needing a TOC adjustment. */ | |
8387904d AM |
12553 | if (code_sec != NULL |
12554 | && code_sec->output_section != NULL | |
6f20ed8a AM |
12555 | && (htab->sec_info[code_sec->id].toc_off |
12556 | != htab->sec_info[section->id].toc_off) | |
4c52953f AM |
12557 | && (code_sec->has_toc_reloc |
12558 | || code_sec->makes_toc_func_call)) | |
ad8e1ba5 AM |
12559 | stub_type = ppc_stub_long_branch_r2off; |
12560 | } | |
12561 | ||
721956f4 AM |
12562 | if (stub_type == ppc_stub_none) |
12563 | continue; | |
12564 | ||
411e1bfb AM |
12565 | /* __tls_get_addr calls might be eliminated. */ |
12566 | if (stub_type != ppc_stub_plt_call | |
12567 | && hash != NULL | |
8387904d AM |
12568 | && (hash == htab->tls_get_addr |
12569 | || hash == htab->tls_get_addr_fd) | |
411e1bfb AM |
12570 | && section->has_tls_reloc |
12571 | && irela != internal_relocs) | |
12572 | { | |
12573 | /* Get tls info. */ | |
f961d9dd | 12574 | unsigned char *tls_mask; |
411e1bfb | 12575 | |
3a71aa26 | 12576 | if (!get_tls_mask (&tls_mask, NULL, NULL, &local_syms, |
411e1bfb AM |
12577 | irela - 1, input_bfd)) |
12578 | goto error_ret_free_internal; | |
e7b938ca | 12579 | if (*tls_mask != 0) |
411e1bfb AM |
12580 | continue; |
12581 | } | |
12582 | ||
f378ab09 | 12583 | if (stub_type == ppc_stub_plt_call) |
794e51c0 | 12584 | { |
6e1816be AM |
12585 | if (!htab->opd_abi |
12586 | && htab->params->plt_localentry0 != 0 | |
12587 | && is_elfv2_localentry0 (&hash->elf)) | |
12588 | htab->has_plt_localentry0 = 1; | |
12589 | else if (irela + 1 < irelaend | |
12590 | && irela[1].r_offset == irela->r_offset + 4 | |
12591 | && (ELF64_R_TYPE (irela[1].r_info) | |
12592 | == R_PPC64_TOCSAVE)) | |
f378ab09 AM |
12593 | { |
12594 | if (!tocsave_find (htab, INSERT, | |
12595 | &local_syms, irela + 1, input_bfd)) | |
12596 | goto error_ret_free_internal; | |
12597 | } | |
f378ab09 AM |
12598 | else |
12599 | stub_type = ppc_stub_plt_call_r2save; | |
794e51c0 | 12600 | } |
3b421ab3 | 12601 | |
721956f4 | 12602 | /* Support for grouping stub sections. */ |
6f20ed8a | 12603 | id_sec = htab->sec_info[section->id].u.group->link_sec; |
721956f4 AM |
12604 | |
12605 | /* Get the name of this stub. */ | |
12606 | stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela); | |
12607 | if (!stub_name) | |
12608 | goto error_ret_free_internal; | |
12609 | ||
12610 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, | |
b34976b6 | 12611 | stub_name, FALSE, FALSE); |
721956f4 AM |
12612 | if (stub_entry != NULL) |
12613 | { | |
12614 | /* The proper stub has already been created. */ | |
12615 | free (stub_name); | |
794e51c0 AM |
12616 | if (stub_type == ppc_stub_plt_call_r2save) |
12617 | stub_entry->stub_type = stub_type; | |
721956f4 AM |
12618 | continue; |
12619 | } | |
12620 | ||
25f53a85 | 12621 | stub_entry = ppc_add_stub (stub_name, section, info); |
721956f4 AM |
12622 | if (stub_entry == NULL) |
12623 | { | |
12624 | free (stub_name); | |
6cdc0ccc AM |
12625 | error_ret_free_internal: |
12626 | if (elf_section_data (section)->relocs == NULL) | |
12627 | free (internal_relocs); | |
12628 | error_ret_free_local: | |
12629 | if (local_syms != NULL | |
12630 | && (symtab_hdr->contents | |
12631 | != (unsigned char *) local_syms)) | |
12632 | free (local_syms); | |
b34976b6 | 12633 | return FALSE; |
721956f4 AM |
12634 | } |
12635 | ||
ad8e1ba5 | 12636 | stub_entry->stub_type = stub_type; |
794e51c0 AM |
12637 | if (stub_type != ppc_stub_plt_call |
12638 | && stub_type != ppc_stub_plt_call_r2save) | |
e054468f AM |
12639 | { |
12640 | stub_entry->target_value = code_value; | |
12641 | stub_entry->target_section = code_sec; | |
12642 | } | |
12643 | else | |
12644 | { | |
12645 | stub_entry->target_value = sym_value; | |
12646 | stub_entry->target_section = sym_sec; | |
12647 | } | |
721956f4 | 12648 | stub_entry->h = hash; |
e054468f | 12649 | stub_entry->plt_ent = plt_ent; |
6911b7dc | 12650 | stub_entry->other = hash ? hash->elf.other : sym->st_other; |
ee75fd95 AM |
12651 | |
12652 | if (stub_entry->h != NULL) | |
12653 | htab->stub_globals += 1; | |
721956f4 AM |
12654 | } |
12655 | ||
12656 | /* We're done with the internal relocs, free them. */ | |
6cdc0ccc | 12657 | if (elf_section_data (section)->relocs != internal_relocs) |
1e2f5b6e | 12658 | free (internal_relocs); |
721956f4 | 12659 | } |
6cdc0ccc AM |
12660 | |
12661 | if (local_syms != NULL | |
12662 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
12663 | { | |
12664 | if (!info->keep_memory) | |
12665 | free (local_syms); | |
12666 | else | |
12667 | symtab_hdr->contents = (unsigned char *) local_syms; | |
12668 | } | |
721956f4 AM |
12669 | } |
12670 | ||
5c3dead3 | 12671 | /* We may have added some stubs. Find out the new size of the |
721956f4 | 12672 | stub sections. */ |
d4aaa2a0 AM |
12673 | for (group = htab->group; group != NULL; group = group->next) |
12674 | if (group->stub_sec != NULL) | |
ee75fd95 | 12675 | { |
d4aaa2a0 AM |
12676 | asection *stub_sec = group->stub_sec; |
12677 | ||
ea3d7d1c AM |
12678 | if (htab->stub_iteration <= STUB_SHRINK_ITER |
12679 | || stub_sec->rawsize < stub_sec->size) | |
12680 | /* Past STUB_SHRINK_ITER, rawsize is the max size seen. */ | |
12681 | stub_sec->rawsize = stub_sec->size; | |
ee75fd95 AM |
12682 | stub_sec->size = 0; |
12683 | stub_sec->reloc_count = 0; | |
84f5d08e | 12684 | stub_sec->flags &= ~SEC_RELOC; |
ee75fd95 | 12685 | } |
eea6121a | 12686 | |
ba21f564 AM |
12687 | if (htab->stub_iteration <= STUB_SHRINK_ITER |
12688 | || htab->brlt->rawsize < htab->brlt->size) | |
12689 | htab->brlt->rawsize = htab->brlt->size; | |
eea6121a | 12690 | htab->brlt->size = 0; |
84f5d08e AM |
12691 | htab->brlt->reloc_count = 0; |
12692 | htab->brlt->flags &= ~SEC_RELOC; | |
ee75fd95 | 12693 | if (htab->relbrlt != NULL) |
eea6121a | 12694 | htab->relbrlt->size = 0; |
721956f4 | 12695 | |
63bc6f6c | 12696 | bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, info); |
721956f4 | 12697 | |
a4b6fadd AM |
12698 | for (group = htab->group; group != NULL; group = group->next) |
12699 | if (group->needs_save_res) | |
12700 | group->stub_sec->size += htab->sfpr->size; | |
12701 | ||
176a0d42 AM |
12702 | if (info->emitrelocations |
12703 | && htab->glink != NULL && htab->glink->size != 0) | |
12704 | { | |
12705 | htab->glink->reloc_count = 1; | |
12706 | htab->glink->flags |= SEC_RELOC; | |
12707 | } | |
12708 | ||
58d180e8 AM |
12709 | if (htab->glink_eh_frame != NULL |
12710 | && !bfd_is_abs_section (htab->glink_eh_frame->output_section) | |
2d0d44d5 | 12711 | && htab->glink_eh_frame->output_section->size > 8) |
58d180e8 | 12712 | { |
2e0ce1c8 | 12713 | size_t size = 0, align = 4; |
58d180e8 | 12714 | |
d4aaa2a0 AM |
12715 | for (group = htab->group; group != NULL; group = group->next) |
12716 | if (group->stub_sec != NULL) | |
12717 | size += stub_eh_frame_size (group, align); | |
58d180e8 | 12718 | if (htab->glink != NULL && htab->glink->size != 0) |
2e0ce1c8 | 12719 | size += (24 + align - 1) & -align; |
58d180e8 | 12720 | if (size != 0) |
2e0ce1c8 AM |
12721 | size += (sizeof (glink_eh_frame_cie) + align - 1) & -align; |
12722 | align = 1ul << htab->glink_eh_frame->output_section->alignment_power; | |
12723 | size = (size + align - 1) & -align; | |
58d180e8 AM |
12724 | htab->glink_eh_frame->rawsize = htab->glink_eh_frame->size; |
12725 | htab->glink_eh_frame->size = size; | |
12726 | } | |
12727 | ||
e7d1c40c | 12728 | if (htab->params->plt_stub_align != 0) |
d4aaa2a0 AM |
12729 | for (group = htab->group; group != NULL; group = group->next) |
12730 | if (group->stub_sec != NULL) | |
691d2e9a AM |
12731 | { |
12732 | int align = abs (htab->params->plt_stub_align); | |
12733 | group->stub_sec->size | |
12734 | = (group->stub_sec->size + (1 << align) - 1) & -(1 << align); | |
12735 | } | |
d4aaa2a0 AM |
12736 | |
12737 | for (group = htab->group; group != NULL; group = group->next) | |
12738 | if (group->stub_sec != NULL | |
12739 | && group->stub_sec->rawsize != group->stub_sec->size | |
c9301e31 | 12740 | && (htab->stub_iteration <= STUB_SHRINK_ITER |
d4aaa2a0 | 12741 | || group->stub_sec->rawsize < group->stub_sec->size)) |
5c3dead3 AM |
12742 | break; |
12743 | ||
d4aaa2a0 | 12744 | if (group == NULL |
ba21f564 AM |
12745 | && (htab->brlt->rawsize == htab->brlt->size |
12746 | || (htab->stub_iteration > STUB_SHRINK_ITER | |
12747 | && htab->brlt->rawsize > htab->brlt->size)) | |
58d180e8 AM |
12748 | && (htab->glink_eh_frame == NULL |
12749 | || htab->glink_eh_frame->rawsize == htab->glink_eh_frame->size)) | |
5c3dead3 AM |
12750 | break; |
12751 | ||
721956f4 | 12752 | /* Ask the linker to do its stuff. */ |
e7d1c40c | 12753 | (*htab->params->layout_sections_again) (); |
721956f4 AM |
12754 | } |
12755 | ||
da44f4e5 AM |
12756 | if (htab->glink_eh_frame != NULL |
12757 | && htab->glink_eh_frame->size != 0) | |
12758 | { | |
12759 | bfd_vma val; | |
12760 | bfd_byte *p, *last_fde; | |
12761 | size_t last_fde_len, size, align, pad; | |
d4aaa2a0 | 12762 | struct map_stub *group; |
da44f4e5 AM |
12763 | |
12764 | p = bfd_zalloc (htab->glink_eh_frame->owner, htab->glink_eh_frame->size); | |
12765 | if (p == NULL) | |
12766 | return FALSE; | |
12767 | htab->glink_eh_frame->contents = p; | |
12768 | last_fde = p; | |
2e0ce1c8 | 12769 | align = 4; |
da44f4e5 AM |
12770 | |
12771 | memcpy (p, glink_eh_frame_cie, sizeof (glink_eh_frame_cie)); | |
12772 | /* CIE length (rewrite in case little-endian). */ | |
2e0ce1c8 | 12773 | last_fde_len = ((sizeof (glink_eh_frame_cie) + align - 1) & -align) - 4; |
da44f4e5 | 12774 | bfd_put_32 (htab->elf.dynobj, last_fde_len, p); |
2e0ce1c8 | 12775 | p += last_fde_len + 4; |
da44f4e5 | 12776 | |
d4aaa2a0 AM |
12777 | for (group = htab->group; group != NULL; group = group->next) |
12778 | if (group->stub_sec != NULL) | |
da44f4e5 AM |
12779 | { |
12780 | last_fde = p; | |
d4aaa2a0 | 12781 | last_fde_len = stub_eh_frame_size (group, align) - 4; |
da44f4e5 | 12782 | /* FDE length. */ |
2e0ce1c8 | 12783 | bfd_put_32 (htab->elf.dynobj, last_fde_len, p); |
da44f4e5 AM |
12784 | p += 4; |
12785 | /* CIE pointer. */ | |
12786 | val = p - htab->glink_eh_frame->contents; | |
12787 | bfd_put_32 (htab->elf.dynobj, val, p); | |
12788 | p += 4; | |
12789 | /* Offset to stub section, written later. */ | |
12790 | p += 4; | |
12791 | /* stub section size. */ | |
d4aaa2a0 | 12792 | bfd_put_32 (htab->elf.dynobj, group->stub_sec->size, p); |
da44f4e5 AM |
12793 | p += 4; |
12794 | /* Augmentation. */ | |
12795 | p += 1; | |
d4aaa2a0 AM |
12796 | if (group->tls_get_addr_opt_bctrl != -1u) |
12797 | { | |
12798 | unsigned int to_bctrl = group->tls_get_addr_opt_bctrl / 4; | |
12799 | ||
12800 | /* This FDE needs more than just the default. | |
12801 | Describe __tls_get_addr_opt stub LR. */ | |
12802 | if (to_bctrl < 64) | |
12803 | *p++ = DW_CFA_advance_loc + to_bctrl; | |
12804 | else if (to_bctrl < 256) | |
12805 | { | |
12806 | *p++ = DW_CFA_advance_loc1; | |
12807 | *p++ = to_bctrl; | |
12808 | } | |
12809 | else if (to_bctrl < 65536) | |
12810 | { | |
12811 | *p++ = DW_CFA_advance_loc2; | |
12812 | bfd_put_16 (htab->elf.dynobj, to_bctrl, p); | |
12813 | p += 2; | |
12814 | } | |
12815 | else | |
12816 | { | |
12817 | *p++ = DW_CFA_advance_loc4; | |
12818 | bfd_put_32 (htab->elf.dynobj, to_bctrl, p); | |
12819 | p += 4; | |
12820 | } | |
12821 | *p++ = DW_CFA_offset_extended_sf; | |
12822 | *p++ = 65; | |
12823 | *p++ = -(STK_LINKER (htab) / 8) & 0x7f; | |
12824 | *p++ = DW_CFA_advance_loc + 4; | |
12825 | *p++ = DW_CFA_restore_extended; | |
12826 | *p++ = 65; | |
12827 | } | |
da44f4e5 | 12828 | /* Pad. */ |
d4aaa2a0 | 12829 | p = last_fde + last_fde_len + 4; |
da44f4e5 AM |
12830 | } |
12831 | if (htab->glink != NULL && htab->glink->size != 0) | |
12832 | { | |
12833 | last_fde = p; | |
2e0ce1c8 | 12834 | last_fde_len = ((24 + align - 1) & -align) - 4; |
da44f4e5 | 12835 | /* FDE length. */ |
2e0ce1c8 | 12836 | bfd_put_32 (htab->elf.dynobj, last_fde_len, p); |
da44f4e5 AM |
12837 | p += 4; |
12838 | /* CIE pointer. */ | |
12839 | val = p - htab->glink_eh_frame->contents; | |
12840 | bfd_put_32 (htab->elf.dynobj, val, p); | |
12841 | p += 4; | |
12842 | /* Offset to .glink, written later. */ | |
12843 | p += 4; | |
12844 | /* .glink size. */ | |
12845 | bfd_put_32 (htab->elf.dynobj, htab->glink->size - 8, p); | |
12846 | p += 4; | |
12847 | /* Augmentation. */ | |
12848 | p += 1; | |
12849 | ||
12850 | *p++ = DW_CFA_advance_loc + 1; | |
12851 | *p++ = DW_CFA_register; | |
12852 | *p++ = 65; | |
9f08fa5c | 12853 | *p++ = htab->opd_abi ? 12 : 0; |
15a3a14f | 12854 | *p++ = DW_CFA_advance_loc + (htab->opd_abi ? 5 : 7); |
da44f4e5 AM |
12855 | *p++ = DW_CFA_restore_extended; |
12856 | *p++ = 65; | |
2e0ce1c8 | 12857 | p += ((24 + align - 1) & -align) - 24; |
da44f4e5 AM |
12858 | } |
12859 | /* Subsume any padding into the last FDE if user .eh_frame | |
12860 | sections are aligned more than glink_eh_frame. Otherwise any | |
12861 | zero padding will be seen as a terminator. */ | |
2e0ce1c8 | 12862 | align = 1ul << htab->glink_eh_frame->output_section->alignment_power; |
da44f4e5 | 12863 | size = p - htab->glink_eh_frame->contents; |
2e0ce1c8 | 12864 | pad = ((size + align - 1) & -align) - size; |
da44f4e5 AM |
12865 | htab->glink_eh_frame->size = size + pad; |
12866 | bfd_put_32 (htab->elf.dynobj, last_fde_len + pad, last_fde); | |
12867 | } | |
12868 | ||
d969d15f AM |
12869 | maybe_strip_output (info, htab->brlt); |
12870 | if (htab->glink_eh_frame != NULL) | |
12871 | maybe_strip_output (info, htab->glink_eh_frame); | |
721956f4 | 12872 | |
b34976b6 | 12873 | return TRUE; |
721956f4 AM |
12874 | } |
12875 | ||
12876 | /* Called after we have determined section placement. If sections | |
805fc799 | 12877 | move, we'll be called again. Provide a value for TOCstart. */ |
721956f4 | 12878 | |
805fc799 | 12879 | bfd_vma |
1c865ab2 | 12880 | ppc64_elf_set_toc (struct bfd_link_info *info, bfd *obfd) |
721956f4 | 12881 | { |
805fc799 | 12882 | asection *s; |
a27e685f | 12883 | bfd_vma TOCstart, adjust; |
721956f4 | 12884 | |
43417696 AM |
12885 | if (info != NULL) |
12886 | { | |
12887 | struct elf_link_hash_entry *h; | |
12888 | struct elf_link_hash_table *htab = elf_hash_table (info); | |
12889 | ||
12890 | if (is_elf_hash_table (htab) | |
12891 | && htab->hgot != NULL) | |
12892 | h = htab->hgot; | |
12893 | else | |
12894 | { | |
12895 | h = elf_link_hash_lookup (htab, ".TOC.", FALSE, FALSE, TRUE); | |
12896 | if (is_elf_hash_table (htab)) | |
12897 | htab->hgot = h; | |
12898 | } | |
12899 | if (h != NULL | |
12900 | && h->root.type == bfd_link_hash_defined | |
12901 | && !h->root.linker_def | |
12902 | && (!is_elf_hash_table (htab) | |
12903 | || h->def_regular)) | |
12904 | { | |
12905 | TOCstart = (h->root.u.def.value - TOC_BASE_OFF | |
12906 | + h->root.u.def.section->output_offset | |
12907 | + h->root.u.def.section->output_section->vma); | |
12908 | _bfd_set_gp_value (obfd, TOCstart); | |
12909 | return TOCstart; | |
12910 | } | |
12911 | } | |
12912 | ||
805fc799 AM |
12913 | /* The TOC consists of sections .got, .toc, .tocbss, .plt in that |
12914 | order. The TOC starts where the first of these sections starts. */ | |
12915 | s = bfd_get_section_by_name (obfd, ".got"); | |
e054468f | 12916 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
805fc799 | 12917 | s = bfd_get_section_by_name (obfd, ".toc"); |
e054468f | 12918 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
805fc799 | 12919 | s = bfd_get_section_by_name (obfd, ".tocbss"); |
e054468f | 12920 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
805fc799 | 12921 | s = bfd_get_section_by_name (obfd, ".plt"); |
e054468f | 12922 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
805fc799 AM |
12923 | { |
12924 | /* This may happen for | |
12925 | o references to TOC base (SYM@toc / TOC[tc0]) without a | |
12926 | .toc directive | |
12927 | o bad linker script | |
12928 | o --gc-sections and empty TOC sections | |
12929 | ||
12930 | FIXME: Warn user? */ | |
12931 | ||
12932 | /* Look for a likely section. We probably won't even be | |
12933 | using TOCstart. */ | |
12934 | for (s = obfd->sections; s != NULL; s = s->next) | |
e054468f AM |
12935 | if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY |
12936 | | SEC_EXCLUDE)) | |
805fc799 AM |
12937 | == (SEC_ALLOC | SEC_SMALL_DATA)) |
12938 | break; | |
721956f4 | 12939 | if (s == NULL) |
805fc799 | 12940 | for (s = obfd->sections; s != NULL; s = s->next) |
e054468f | 12941 | if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_EXCLUDE)) |
805fc799 AM |
12942 | == (SEC_ALLOC | SEC_SMALL_DATA)) |
12943 | break; | |
721956f4 | 12944 | if (s == NULL) |
805fc799 | 12945 | for (s = obfd->sections; s != NULL; s = s->next) |
e054468f AM |
12946 | if ((s->flags & (SEC_ALLOC | SEC_READONLY | SEC_EXCLUDE)) |
12947 | == SEC_ALLOC) | |
805fc799 | 12948 | break; |
721956f4 | 12949 | if (s == NULL) |
805fc799 | 12950 | for (s = obfd->sections; s != NULL; s = s->next) |
e054468f | 12951 | if ((s->flags & (SEC_ALLOC | SEC_EXCLUDE)) == SEC_ALLOC) |
805fc799 AM |
12952 | break; |
12953 | } | |
721956f4 | 12954 | |
805fc799 AM |
12955 | TOCstart = 0; |
12956 | if (s != NULL) | |
12957 | TOCstart = s->output_section->vma + s->output_offset; | |
721956f4 | 12958 | |
a27e685f AM |
12959 | /* Force alignment. */ |
12960 | adjust = TOCstart & (TOC_BASE_ALIGN - 1); | |
12961 | TOCstart -= adjust; | |
1c865ab2 AM |
12962 | _bfd_set_gp_value (obfd, TOCstart); |
12963 | ||
810d4e75 | 12964 | if (info != NULL && s != NULL) |
1c865ab2 AM |
12965 | { |
12966 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
12967 | ||
810d4e75 AM |
12968 | if (htab != NULL) |
12969 | { | |
12970 | if (htab->elf.hgot != NULL) | |
12971 | { | |
a27e685f | 12972 | htab->elf.hgot->root.u.def.value = TOC_BASE_OFF - adjust; |
810d4e75 AM |
12973 | htab->elf.hgot->root.u.def.section = s; |
12974 | } | |
12975 | } | |
12976 | else | |
1c865ab2 | 12977 | { |
810d4e75 AM |
12978 | struct bfd_link_hash_entry *bh = NULL; |
12979 | _bfd_generic_link_add_one_symbol (info, obfd, ".TOC.", BSF_GLOBAL, | |
a27e685f AM |
12980 | s, TOC_BASE_OFF - adjust, |
12981 | NULL, FALSE, FALSE, &bh); | |
1c865ab2 AM |
12982 | } |
12983 | } | |
805fc799 | 12984 | return TOCstart; |
721956f4 AM |
12985 | } |
12986 | ||
a345bc8d AM |
12987 | /* Called via elf_link_hash_traverse from ppc64_elf_build_stubs to |
12988 | write out any global entry stubs. */ | |
12989 | ||
12990 | static bfd_boolean | |
12991 | build_global_entry_stubs (struct elf_link_hash_entry *h, void *inf) | |
12992 | { | |
12993 | struct bfd_link_info *info; | |
12994 | struct ppc_link_hash_table *htab; | |
12995 | struct plt_entry *pent; | |
12996 | asection *s; | |
12997 | ||
12998 | if (h->root.type == bfd_link_hash_indirect) | |
12999 | return TRUE; | |
13000 | ||
13001 | if (!h->pointer_equality_needed) | |
13002 | return TRUE; | |
13003 | ||
13004 | if (h->def_regular) | |
13005 | return TRUE; | |
13006 | ||
13007 | info = inf; | |
13008 | htab = ppc_hash_table (info); | |
13009 | if (htab == NULL) | |
13010 | return FALSE; | |
13011 | ||
9e390558 | 13012 | s = htab->global_entry; |
a345bc8d AM |
13013 | for (pent = h->plt.plist; pent != NULL; pent = pent->next) |
13014 | if (pent->plt.offset != (bfd_vma) -1 | |
13015 | && pent->addend == 0) | |
13016 | { | |
13017 | bfd_byte *p; | |
13018 | asection *plt; | |
13019 | bfd_vma off; | |
13020 | ||
a345bc8d | 13021 | p = s->contents + h->root.u.def.value; |
33e44f2e | 13022 | plt = htab->elf.splt; |
a345bc8d AM |
13023 | if (!htab->elf.dynamic_sections_created |
13024 | || h->dynindx == -1) | |
33e44f2e | 13025 | plt = htab->elf.iplt; |
a345bc8d AM |
13026 | off = pent->plt.offset + plt->output_offset + plt->output_section->vma; |
13027 | off -= h->root.u.def.value + s->output_offset + s->output_section->vma; | |
13028 | ||
13029 | if (off + 0x80008000 > 0xffffffff || (off & 3) != 0) | |
13030 | { | |
13031 | info->callbacks->einfo | |
c1c8c1ef | 13032 | (_("%P: linkage table error against `%pT'\n"), |
a345bc8d AM |
13033 | h->root.root.string); |
13034 | bfd_set_error (bfd_error_bad_value); | |
13035 | htab->stub_error = TRUE; | |
13036 | } | |
13037 | ||
7341d5e2 AM |
13038 | htab->stub_count[ppc_stub_global_entry - 1] += 1; |
13039 | if (htab->params->emit_stub_syms) | |
13040 | { | |
13041 | size_t len = strlen (h->root.root.string); | |
13042 | char *name = bfd_malloc (sizeof "12345678.global_entry." + len); | |
13043 | ||
13044 | if (name == NULL) | |
13045 | return FALSE; | |
13046 | ||
13047 | sprintf (name, "%08x.global_entry.%s", s->id, h->root.root.string); | |
13048 | h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE); | |
13049 | if (h == NULL) | |
13050 | return FALSE; | |
13051 | if (h->root.type == bfd_link_hash_new) | |
13052 | { | |
13053 | h->root.type = bfd_link_hash_defined; | |
13054 | h->root.u.def.section = s; | |
13055 | h->root.u.def.value = p - s->contents; | |
13056 | h->ref_regular = 1; | |
13057 | h->def_regular = 1; | |
13058 | h->ref_regular_nonweak = 1; | |
13059 | h->forced_local = 1; | |
13060 | h->non_elf = 0; | |
2ec55de3 | 13061 | h->root.linker_def = 1; |
7341d5e2 AM |
13062 | } |
13063 | } | |
13064 | ||
a345bc8d AM |
13065 | if (PPC_HA (off) != 0) |
13066 | { | |
13067 | bfd_put_32 (s->owner, ADDIS_R12_R12 | PPC_HA (off), p); | |
13068 | p += 4; | |
13069 | } | |
13070 | bfd_put_32 (s->owner, LD_R12_0R12 | PPC_LO (off), p); | |
13071 | p += 4; | |
13072 | bfd_put_32 (s->owner, MTCTR_R12, p); | |
13073 | p += 4; | |
407aa07c | 13074 | bfd_put_32 (s->owner, BCTR, p); |
a345bc8d AM |
13075 | break; |
13076 | } | |
13077 | return TRUE; | |
13078 | } | |
13079 | ||
721956f4 AM |
13080 | /* Build all the stubs associated with the current output file. |
13081 | The stubs are kept in a hash table attached to the main linker | |
13082 | hash table. This function is called via gldelf64ppc_finish. */ | |
13083 | ||
b34976b6 | 13084 | bfd_boolean |
e7d1c40c | 13085 | ppc64_elf_build_stubs (struct bfd_link_info *info, |
4ce794b7 | 13086 | char **stats) |
5d1634d7 AM |
13087 | { |
13088 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
a4b6fadd | 13089 | struct map_stub *group; |
721956f4 | 13090 | asection *stub_sec; |
5d1634d7 | 13091 | bfd_byte *p; |
e717da7e | 13092 | int stub_sec_count = 0; |
5d1634d7 | 13093 | |
4dfe6ac6 NC |
13094 | if (htab == NULL) |
13095 | return FALSE; | |
13096 | ||
eea6121a | 13097 | /* Allocate memory to hold the linker stubs. */ |
d4aaa2a0 AM |
13098 | for (group = htab->group; group != NULL; group = group->next) |
13099 | if ((stub_sec = group->stub_sec) != NULL | |
eea6121a | 13100 | && stub_sec->size != 0) |
e717da7e | 13101 | { |
e7d1c40c | 13102 | stub_sec->contents = bfd_zalloc (htab->params->stub_bfd, stub_sec->size); |
eea6121a AM |
13103 | if (stub_sec->contents == NULL) |
13104 | return FALSE; | |
eea6121a | 13105 | stub_sec->size = 0; |
e717da7e | 13106 | } |
5d1634d7 | 13107 | |
23eb7e01 | 13108 | if (htab->glink != NULL && htab->glink->size != 0) |
5d1634d7 | 13109 | { |
9f951329 | 13110 | unsigned int indx; |
ad8e1ba5 | 13111 | bfd_vma plt0; |
9f951329 | 13112 | |
721956f4 | 13113 | /* Build the .glink plt call stub. */ |
e7d1c40c | 13114 | if (htab->params->emit_stub_syms) |
97b639ba AM |
13115 | { |
13116 | struct elf_link_hash_entry *h; | |
468392fb AM |
13117 | h = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve", |
13118 | TRUE, FALSE, FALSE); | |
97b639ba AM |
13119 | if (h == NULL) |
13120 | return FALSE; | |
13121 | if (h->root.type == bfd_link_hash_new) | |
13122 | { | |
13123 | h->root.type = bfd_link_hash_defined; | |
13124 | h->root.u.def.section = htab->glink; | |
ee4bf8d2 | 13125 | h->root.u.def.value = 8; |
f5385ebf AM |
13126 | h->ref_regular = 1; |
13127 | h->def_regular = 1; | |
13128 | h->ref_regular_nonweak = 1; | |
13129 | h->forced_local = 1; | |
13130 | h->non_elf = 0; | |
2ec55de3 | 13131 | h->root.linker_def = 1; |
97b639ba AM |
13132 | } |
13133 | } | |
33e44f2e AM |
13134 | plt0 = (htab->elf.splt->output_section->vma |
13135 | + htab->elf.splt->output_offset | |
13136 | - 16); | |
176a0d42 AM |
13137 | if (info->emitrelocations) |
13138 | { | |
13139 | Elf_Internal_Rela *r = get_relocs (htab->glink, 1); | |
13140 | if (r == NULL) | |
13141 | return FALSE; | |
13142 | r->r_offset = (htab->glink->output_offset | |
13143 | + htab->glink->output_section->vma); | |
13144 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL64); | |
13145 | r->r_addend = plt0; | |
13146 | } | |
4ce794b7 | 13147 | p = htab->glink->contents; |
176a0d42 | 13148 | plt0 -= htab->glink->output_section->vma + htab->glink->output_offset; |
ee4bf8d2 AM |
13149 | bfd_put_64 (htab->glink->owner, plt0, p); |
13150 | p += 8; | |
b9e5796b AM |
13151 | if (htab->opd_abi) |
13152 | { | |
13153 | bfd_put_32 (htab->glink->owner, MFLR_R12, p); | |
13154 | p += 4; | |
13155 | bfd_put_32 (htab->glink->owner, BCL_20_31, p); | |
13156 | p += 4; | |
13157 | bfd_put_32 (htab->glink->owner, MFLR_R11, p); | |
13158 | p += 4; | |
13159 | bfd_put_32 (htab->glink->owner, LD_R2_0R11 | (-16 & 0xfffc), p); | |
13160 | p += 4; | |
13161 | bfd_put_32 (htab->glink->owner, MTLR_R12, p); | |
13162 | p += 4; | |
13163 | bfd_put_32 (htab->glink->owner, ADD_R11_R2_R11, p); | |
13164 | p += 4; | |
13165 | bfd_put_32 (htab->glink->owner, LD_R12_0R11, p); | |
13166 | p += 4; | |
13167 | bfd_put_32 (htab->glink->owner, LD_R2_0R11 | 8, p); | |
13168 | p += 4; | |
13169 | bfd_put_32 (htab->glink->owner, MTCTR_R12, p); | |
13170 | p += 4; | |
13171 | bfd_put_32 (htab->glink->owner, LD_R11_0R11 | 16, p); | |
13172 | p += 4; | |
13173 | } | |
13174 | else | |
13175 | { | |
13176 | bfd_put_32 (htab->glink->owner, MFLR_R0, p); | |
13177 | p += 4; | |
13178 | bfd_put_32 (htab->glink->owner, BCL_20_31, p); | |
13179 | p += 4; | |
13180 | bfd_put_32 (htab->glink->owner, MFLR_R11, p); | |
13181 | p += 4; | |
f378ab09 AM |
13182 | bfd_put_32 (htab->glink->owner, STD_R2_0R1 + 24, p); |
13183 | p += 4; | |
b9e5796b AM |
13184 | bfd_put_32 (htab->glink->owner, LD_R2_0R11 | (-16 & 0xfffc), p); |
13185 | p += 4; | |
13186 | bfd_put_32 (htab->glink->owner, MTLR_R0, p); | |
13187 | p += 4; | |
13188 | bfd_put_32 (htab->glink->owner, SUB_R12_R12_R11, p); | |
13189 | p += 4; | |
13190 | bfd_put_32 (htab->glink->owner, ADD_R11_R2_R11, p); | |
13191 | p += 4; | |
13192 | bfd_put_32 (htab->glink->owner, ADDI_R0_R12 | (-48 & 0xffff), p); | |
13193 | p += 4; | |
13194 | bfd_put_32 (htab->glink->owner, LD_R12_0R11, p); | |
13195 | p += 4; | |
13196 | bfd_put_32 (htab->glink->owner, SRDI_R0_R0_2, p); | |
13197 | p += 4; | |
13198 | bfd_put_32 (htab->glink->owner, MTCTR_R12, p); | |
13199 | p += 4; | |
13200 | bfd_put_32 (htab->glink->owner, LD_R11_0R11 | 8, p); | |
13201 | p += 4; | |
13202 | } | |
407aa07c AM |
13203 | bfd_put_32 (htab->glink->owner, BCTR, p); |
13204 | p += 4; | |
c75bc4f7 | 13205 | BFD_ASSERT (p == htab->glink->contents + GLINK_PLTRESOLVE_SIZE (htab)); |
ad8e1ba5 | 13206 | |
9f951329 AM |
13207 | /* Build the .glink lazy link call stubs. */ |
13208 | indx = 0; | |
9e390558 | 13209 | while (p < htab->glink->contents + htab->glink->size) |
9f951329 | 13210 | { |
b9e5796b | 13211 | if (htab->opd_abi) |
9f951329 | 13212 | { |
b9e5796b AM |
13213 | if (indx < 0x8000) |
13214 | { | |
13215 | bfd_put_32 (htab->glink->owner, LI_R0_0 | indx, p); | |
13216 | p += 4; | |
13217 | } | |
13218 | else | |
13219 | { | |
13220 | bfd_put_32 (htab->glink->owner, LIS_R0_0 | PPC_HI (indx), p); | |
13221 | p += 4; | |
13222 | bfd_put_32 (htab->glink->owner, ORI_R0_R0_0 | PPC_LO (indx), | |
13223 | p); | |
13224 | p += 4; | |
13225 | } | |
9f951329 | 13226 | } |
4ce794b7 | 13227 | bfd_put_32 (htab->glink->owner, |
ee4bf8d2 | 13228 | B_DOT | ((htab->glink->contents - p + 8) & 0x3fffffc), p); |
a16d5acb | 13229 | indx++; |
9f951329 AM |
13230 | p += 4; |
13231 | } | |
5d1634d7 | 13232 | } |
5d1634d7 | 13233 | |
9e390558 AM |
13234 | /* Build .glink global entry stubs. */ |
13235 | if (htab->global_entry != NULL && htab->global_entry->size != 0) | |
13236 | elf_link_hash_traverse (&htab->elf, build_global_entry_stubs, info); | |
13237 | ||
7341d5e2 | 13238 | if (htab->brlt != NULL && htab->brlt->size != 0) |
721956f4 | 13239 | { |
4ce794b7 | 13240 | htab->brlt->contents = bfd_zalloc (htab->brlt->owner, |
eea6121a | 13241 | htab->brlt->size); |
4ce794b7 | 13242 | if (htab->brlt->contents == NULL) |
b34976b6 | 13243 | return FALSE; |
721956f4 | 13244 | } |
ee75fd95 | 13245 | if (htab->relbrlt != NULL && htab->relbrlt->size != 0) |
63bc6f6c AM |
13246 | { |
13247 | htab->relbrlt->contents = bfd_zalloc (htab->relbrlt->owner, | |
eea6121a | 13248 | htab->relbrlt->size); |
63bc6f6c AM |
13249 | if (htab->relbrlt->contents == NULL) |
13250 | return FALSE; | |
13251 | } | |
5d1634d7 | 13252 | |
721956f4 AM |
13253 | /* Build the stubs as directed by the stub hash table. */ |
13254 | bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info); | |
5d1634d7 | 13255 | |
a4b6fadd AM |
13256 | for (group = htab->group; group != NULL; group = group->next) |
13257 | if (group->needs_save_res) | |
7dda8d3c | 13258 | group->stub_sec->size += htab->sfpr->size; |
a4b6fadd | 13259 | |
aa8a7074 AM |
13260 | if (htab->relbrlt != NULL) |
13261 | htab->relbrlt->reloc_count = 0; | |
13262 | ||
e7d1c40c | 13263 | if (htab->params->plt_stub_align != 0) |
d4aaa2a0 AM |
13264 | for (group = htab->group; group != NULL; group = group->next) |
13265 | if ((stub_sec = group->stub_sec) != NULL) | |
691d2e9a AM |
13266 | { |
13267 | int align = abs (htab->params->plt_stub_align); | |
13268 | stub_sec->size = (stub_sec->size + (1 << align) - 1) & -(1 << align); | |
13269 | } | |
794e51c0 | 13270 | |
7dda8d3c AM |
13271 | for (group = htab->group; group != NULL; group = group->next) |
13272 | if (group->needs_save_res) | |
13273 | { | |
13274 | stub_sec = group->stub_sec; | |
13275 | memcpy (stub_sec->contents + stub_sec->size - htab->sfpr->size, | |
13276 | htab->sfpr->contents, htab->sfpr->size); | |
13277 | if (htab->params->emit_stub_syms) | |
13278 | { | |
13279 | unsigned int i; | |
13280 | ||
13281 | for (i = 0; i < ARRAY_SIZE (save_res_funcs); i++) | |
13282 | if (!sfpr_define (info, &save_res_funcs[i], stub_sec)) | |
13283 | return FALSE; | |
13284 | } | |
13285 | } | |
13286 | ||
d4aaa2a0 AM |
13287 | for (group = htab->group; group != NULL; group = group->next) |
13288 | if ((stub_sec = group->stub_sec) != NULL) | |
e717da7e AM |
13289 | { |
13290 | stub_sec_count += 1; | |
c9301e31 AM |
13291 | if (stub_sec->rawsize != stub_sec->size |
13292 | && (htab->stub_iteration <= STUB_SHRINK_ITER | |
13293 | || stub_sec->rawsize < stub_sec->size)) | |
e717da7e AM |
13294 | break; |
13295 | } | |
5d1634d7 | 13296 | |
25516cc5 | 13297 | if (group != NULL) |
5d1634d7 | 13298 | { |
b34976b6 | 13299 | htab->stub_error = TRUE; |
cf97bcb0 | 13300 | _bfd_error_handler (_("stubs don't match calculated size")); |
5d1634d7 | 13301 | } |
721956f4 | 13302 | |
d2a300cf AM |
13303 | if (htab->stub_error) |
13304 | return FALSE; | |
13305 | ||
13306 | if (stats != NULL) | |
13307 | { | |
db84fff3 | 13308 | size_t len; |
d2a300cf AM |
13309 | *stats = bfd_malloc (500); |
13310 | if (*stats == NULL) | |
13311 | return FALSE; | |
13312 | ||
db84fff3 AM |
13313 | len = sprintf (*stats, |
13314 | ngettext ("linker stubs in %u group\n", | |
13315 | "linker stubs in %u groups\n", | |
13316 | stub_sec_count), | |
13317 | stub_sec_count); | |
13318 | sprintf (*stats + len, _(" branch %lu\n" | |
13319 | " toc adjust %lu\n" | |
13320 | " long branch %lu\n" | |
13321 | " long toc adj %lu\n" | |
13322 | " plt call %lu\n" | |
13323 | " plt call toc %lu\n" | |
13324 | " global entry %lu"), | |
4ce794b7 AM |
13325 | htab->stub_count[ppc_stub_long_branch - 1], |
13326 | htab->stub_count[ppc_stub_long_branch_r2off - 1], | |
13327 | htab->stub_count[ppc_stub_plt_branch - 1], | |
13328 | htab->stub_count[ppc_stub_plt_branch_r2off - 1], | |
794e51c0 | 13329 | htab->stub_count[ppc_stub_plt_call - 1], |
7341d5e2 AM |
13330 | htab->stub_count[ppc_stub_plt_call_r2save - 1], |
13331 | htab->stub_count[ppc_stub_global_entry - 1]); | |
d2a300cf AM |
13332 | } |
13333 | return TRUE; | |
5bd4f169 AM |
13334 | } |
13335 | ||
60124e18 AM |
13336 | /* What to do when ld finds relocations against symbols defined in |
13337 | discarded sections. */ | |
13338 | ||
13339 | static unsigned int | |
13340 | ppc64_elf_action_discarded (asection *sec) | |
13341 | { | |
13342 | if (strcmp (".opd", sec->name) == 0) | |
13343 | return 0; | |
13344 | ||
13345 | if (strcmp (".toc", sec->name) == 0) | |
13346 | return 0; | |
13347 | ||
bce50a28 JJ |
13348 | if (strcmp (".toc1", sec->name) == 0) |
13349 | return 0; | |
13350 | ||
60124e18 AM |
13351 | return _bfd_elf_default_action_discarded (sec); |
13352 | } | |
13353 | ||
5bd4f169 AM |
13354 | /* The RELOCATE_SECTION function is called by the ELF backend linker |
13355 | to handle the relocations for a section. | |
13356 | ||
13357 | The relocs are always passed as Rela structures; if the section | |
13358 | actually uses Rel structures, the r_addend field will always be | |
13359 | zero. | |
13360 | ||
13361 | This function is responsible for adjust the section contents as | |
13362 | necessary, and (if using Rela relocs and generating a | |
1049f94e | 13363 | relocatable output file) adjusting the reloc addend as |
5bd4f169 AM |
13364 | necessary. |
13365 | ||
13366 | This function does not have to worry about setting the reloc | |
13367 | address or the reloc symbol index. | |
13368 | ||
13369 | LOCAL_SYMS is a pointer to the swapped in local symbols. | |
13370 | ||
13371 | LOCAL_SECTIONS is an array giving the section in the input file | |
13372 | corresponding to the st_shndx field of each local symbol. | |
13373 | ||
13374 | The global hash table entry for the global symbols can be found | |
13375 | via elf_sym_hashes (input_bfd). | |
13376 | ||
1049f94e | 13377 | When generating relocatable output, this function must handle |
5bd4f169 AM |
13378 | STB_LOCAL/STT_SECTION symbols specially. The output symbol is |
13379 | going to be the section symbol corresponding to the output | |
13380 | section, which means that the addend must be adjusted | |
13381 | accordingly. */ | |
13382 | ||
b34976b6 | 13383 | static bfd_boolean |
4ce794b7 AM |
13384 | ppc64_elf_relocate_section (bfd *output_bfd, |
13385 | struct bfd_link_info *info, | |
13386 | bfd *input_bfd, | |
13387 | asection *input_section, | |
13388 | bfd_byte *contents, | |
13389 | Elf_Internal_Rela *relocs, | |
13390 | Elf_Internal_Sym *local_syms, | |
13391 | asection **local_sections) | |
5bd4f169 | 13392 | { |
65f38f15 | 13393 | struct ppc_link_hash_table *htab; |
5bd4f169 AM |
13394 | Elf_Internal_Shdr *symtab_hdr; |
13395 | struct elf_link_hash_entry **sym_hashes; | |
5bd4f169 | 13396 | Elf_Internal_Rela *rel; |
c316a17c | 13397 | Elf_Internal_Rela *wrel; |
5bd4f169 | 13398 | Elf_Internal_Rela *relend; |
411e1bfb AM |
13399 | Elf_Internal_Rela outrel; |
13400 | bfd_byte *loc; | |
411e1bfb | 13401 | struct got_entry **local_got_ents; |
5bd4f169 | 13402 | bfd_vma TOCstart; |
b34976b6 AM |
13403 | bfd_boolean ret = TRUE; |
13404 | bfd_boolean is_opd; | |
794e51c0 AM |
13405 | /* Assume 'at' branch hints. */ |
13406 | bfd_boolean is_isa_v2 = TRUE; | |
95f0d0d2 | 13407 | bfd_vma d_offset = (bfd_big_endian (input_bfd) ? 2 : 0); |
5bd4f169 | 13408 | |
65f38f15 | 13409 | /* Initialize howto table if needed. */ |
5bd4f169 | 13410 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) |
5bd4f169 AM |
13411 | ppc_howto_init (); |
13412 | ||
65f38f15 | 13413 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
13414 | if (htab == NULL) |
13415 | return FALSE; | |
ee75fd95 AM |
13416 | |
13417 | /* Don't relocate stub sections. */ | |
e7d1c40c | 13418 | if (input_section->owner == htab->params->stub_bfd) |
ee75fd95 AM |
13419 | return TRUE; |
13420 | ||
0c8d6e5c | 13421 | BFD_ASSERT (is_ppc64_elf (input_bfd)); |
0ffa91dd | 13422 | |
411e1bfb | 13423 | local_got_ents = elf_local_got_ents (input_bfd); |
5bd4f169 | 13424 | TOCstart = elf_gp (output_bfd); |
0ffa91dd | 13425 | symtab_hdr = &elf_symtab_hdr (input_bfd); |
5bd4f169 | 13426 | sym_hashes = elf_sym_hashes (input_bfd); |
7c8fe5c4 | 13427 | is_opd = ppc64_elf_section_data (input_section)->sec_type == sec_opd; |
65f38f15 | 13428 | |
c316a17c | 13429 | rel = wrel = relocs; |
5bd4f169 | 13430 | relend = relocs + input_section->reloc_count; |
c316a17c | 13431 | for (; rel < relend; wrel++, rel++) |
5bd4f169 | 13432 | { |
04c9666a | 13433 | enum elf_ppc64_reloc_type r_type; |
31c76678 | 13434 | bfd_vma addend; |
5bd4f169 AM |
13435 | bfd_reloc_status_type r; |
13436 | Elf_Internal_Sym *sym; | |
13437 | asection *sec; | |
039b3fef AM |
13438 | struct elf_link_hash_entry *h_elf; |
13439 | struct ppc_link_hash_entry *h; | |
13440 | struct ppc_link_hash_entry *fdh; | |
5bd4f169 | 13441 | const char *sym_name; |
0d4792f7 | 13442 | unsigned long r_symndx, toc_symndx; |
3a71aa26 | 13443 | bfd_vma toc_addend; |
f961d9dd AM |
13444 | unsigned char tls_mask, tls_gd, tls_type; |
13445 | unsigned char sym_type; | |
5bd4f169 | 13446 | bfd_vma relocation; |
b34976b6 AM |
13447 | bfd_boolean unresolved_reloc; |
13448 | bfd_boolean warned; | |
bc30df16 | 13449 | enum { DEST_NORMAL, DEST_OPD, DEST_STUB } reloc_dest; |
67f0cbdb | 13450 | unsigned int insn; |
e11840f9 | 13451 | unsigned int mask; |
721956f4 AM |
13452 | struct ppc_stub_hash_entry *stub_entry; |
13453 | bfd_vma max_br_offset; | |
13454 | bfd_vma from; | |
c316a17c | 13455 | Elf_Internal_Rela orig_rel; |
b80eed39 AM |
13456 | reloc_howto_type *howto; |
13457 | struct reloc_howto_struct alt_howto; | |
5bd4f169 | 13458 | |
c316a17c AM |
13459 | again: |
13460 | orig_rel = *rel; | |
13461 | ||
4ce794b7 | 13462 | r_type = ELF64_R_TYPE (rel->r_info); |
5bd4f169 | 13463 | r_symndx = ELF64_R_SYM (rel->r_info); |
ee87f2da AM |
13464 | |
13465 | /* For old style R_PPC64_TOC relocs with a zero symbol, use the | |
13466 | symbol of the previous ADDR64 reloc. The symbol gives us the | |
13467 | proper TOC base to use. */ | |
13468 | if (rel->r_info == ELF64_R_INFO (0, R_PPC64_TOC) | |
c316a17c AM |
13469 | && wrel != relocs |
13470 | && ELF64_R_TYPE (wrel[-1].r_info) == R_PPC64_ADDR64 | |
ee87f2da | 13471 | && is_opd) |
c316a17c | 13472 | r_symndx = ELF64_R_SYM (wrel[-1].r_info); |
ee87f2da | 13473 | |
4ce794b7 AM |
13474 | sym = NULL; |
13475 | sec = NULL; | |
039b3fef | 13476 | h_elf = NULL; |
4ce794b7 | 13477 | sym_name = NULL; |
b34976b6 AM |
13478 | unresolved_reloc = FALSE; |
13479 | warned = FALSE; | |
65f38f15 | 13480 | |
0b13192e | 13481 | if (r_symndx < symtab_hdr->sh_info) |
5bd4f169 AM |
13482 | { |
13483 | /* It's a local symbol. */ | |
74f0fb50 | 13484 | struct _opd_sec_data *opd; |
4025353c | 13485 | |
5bd4f169 AM |
13486 | sym = local_syms + r_symndx; |
13487 | sec = local_sections[r_symndx]; | |
26c61ae5 | 13488 | sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec); |
0d4792f7 | 13489 | sym_type = ELF64_ST_TYPE (sym->st_info); |
8517fae7 | 13490 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); |
74f0fb50 AM |
13491 | opd = get_opd_info (sec); |
13492 | if (opd != NULL && opd->adjust != NULL) | |
1e2f5b6e | 13493 | { |
51aecdc5 AM |
13494 | long adjust = opd->adjust[OPD_NDX (sym->st_value |
13495 | + rel->r_addend)]; | |
4025353c AM |
13496 | if (adjust == -1) |
13497 | relocation = 0; | |
13498 | else | |
4cc603a5 AM |
13499 | { |
13500 | /* If this is a relocation against the opd section sym | |
13501 | and we have edited .opd, adjust the reloc addend so | |
13502 | that ld -r and ld --emit-relocs output is correct. | |
13503 | If it is a reloc against some other .opd symbol, | |
13504 | then the symbol value will be adjusted later. */ | |
13505 | if (ELF_ST_TYPE (sym->st_info) == STT_SECTION) | |
13506 | rel->r_addend += adjust; | |
13507 | else | |
13508 | relocation += adjust; | |
13509 | } | |
1e2f5b6e | 13510 | } |
5bd4f169 AM |
13511 | } |
13512 | else | |
13513 | { | |
62d887d4 L |
13514 | bfd_boolean ignored; |
13515 | ||
b2a8e766 AM |
13516 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
13517 | r_symndx, symtab_hdr, sym_hashes, | |
039b3fef | 13518 | h_elf, sec, relocation, |
62d887d4 | 13519 | unresolved_reloc, warned, ignored); |
039b3fef AM |
13520 | sym_name = h_elf->root.root.string; |
13521 | sym_type = h_elf->type; | |
b69fdb4e AM |
13522 | if (sec != NULL |
13523 | && sec->owner == output_bfd | |
13524 | && strcmp (sec->name, ".opd") == 0) | |
13525 | { | |
13526 | /* This is a symbol defined in a linker script. All | |
13527 | such are defined in output sections, even those | |
13528 | defined by simple assignment from a symbol defined in | |
13529 | an input section. Transfer the symbol to an | |
13530 | appropriate input .opd section, so that a branch to | |
13531 | this symbol will be mapped to the location specified | |
13532 | by the opd entry. */ | |
13533 | struct bfd_link_order *lo; | |
13534 | for (lo = sec->map_head.link_order; lo != NULL; lo = lo->next) | |
13535 | if (lo->type == bfd_indirect_link_order) | |
13536 | { | |
13537 | asection *isec = lo->u.indirect.section; | |
13538 | if (h_elf->root.u.def.value >= isec->output_offset | |
13539 | && h_elf->root.u.def.value < (isec->output_offset | |
13540 | + isec->size)) | |
13541 | { | |
13542 | h_elf->root.u.def.value -= isec->output_offset; | |
13543 | h_elf->root.u.def.section = isec; | |
13544 | sec = isec; | |
13545 | break; | |
13546 | } | |
13547 | } | |
13548 | } | |
5bd4f169 | 13549 | } |
039b3fef | 13550 | h = (struct ppc_link_hash_entry *) h_elf; |
5bd4f169 | 13551 | |
dbaa2011 | 13552 | if (sec != NULL && discarded_section (sec)) |
c316a17c AM |
13553 | { |
13554 | _bfd_clear_contents (ppc64_elf_howto_table[r_type], | |
13555 | input_bfd, input_section, | |
13556 | contents + rel->r_offset); | |
13557 | wrel->r_offset = rel->r_offset; | |
13558 | wrel->r_info = 0; | |
13559 | wrel->r_addend = 0; | |
13560 | ||
13561 | /* For ld -r, remove relocations in debug sections against | |
dcd2b8a0 | 13562 | symbols defined in discarded sections. Not done for |
c316a17c AM |
13563 | non-debug to preserve relocs in .eh_frame which the |
13564 | eh_frame editing code expects to be present. */ | |
13565 | if (bfd_link_relocatable (info) | |
13566 | && (input_section->flags & SEC_DEBUGGING)) | |
13567 | wrel--; | |
13568 | ||
13569 | continue; | |
13570 | } | |
ab96bf03 | 13571 | |
0e1862bb | 13572 | if (bfd_link_relocatable (info)) |
c316a17c | 13573 | goto copy_reloc; |
ab96bf03 | 13574 | |
f40da81b AM |
13575 | if (h != NULL && &h->elf == htab->elf.hgot) |
13576 | { | |
6f20ed8a | 13577 | relocation = TOCstart + htab->sec_info[input_section->id].toc_off; |
f40da81b AM |
13578 | sec = bfd_abs_section_ptr; |
13579 | unresolved_reloc = FALSE; | |
13580 | } | |
13581 | ||
951fd09b AM |
13582 | /* TLS optimizations. Replace instruction sequences and relocs |
13583 | based on information we collected in tls_optimize. We edit | |
13584 | RELOCS so that --emit-relocs will output something sensible | |
13585 | for the final instruction stream. */ | |
13586 | tls_mask = 0; | |
13587 | tls_gd = 0; | |
0d4792f7 | 13588 | toc_symndx = 0; |
727fc41e AM |
13589 | if (h != NULL) |
13590 | tls_mask = h->tls_mask; | |
13591 | else if (local_got_ents != NULL) | |
411e1bfb | 13592 | { |
e054468f AM |
13593 | struct plt_entry **local_plt = (struct plt_entry **) |
13594 | (local_got_ents + symtab_hdr->sh_info); | |
f961d9dd | 13595 | unsigned char *lgot_masks = (unsigned char *) |
e054468f | 13596 | (local_plt + symtab_hdr->sh_info); |
727fc41e AM |
13597 | tls_mask = lgot_masks[r_symndx]; |
13598 | } | |
13599 | if (tls_mask == 0 | |
13600 | && (r_type == R_PPC64_TLS | |
13601 | || r_type == R_PPC64_TLSGD | |
13602 | || r_type == R_PPC64_TLSLD)) | |
13603 | { | |
13604 | /* Check for toc tls entries. */ | |
f961d9dd | 13605 | unsigned char *toc_tls; |
0d4792f7 | 13606 | |
727fc41e AM |
13607 | if (!get_tls_mask (&toc_tls, &toc_symndx, &toc_addend, |
13608 | &local_syms, rel, input_bfd)) | |
13609 | return FALSE; | |
0d4792f7 | 13610 | |
727fc41e AM |
13611 | if (toc_tls) |
13612 | tls_mask = *toc_tls; | |
0d4792f7 AM |
13613 | } |
13614 | ||
13615 | /* Check that tls relocs are used with tls syms, and non-tls | |
13616 | relocs are used with non-tls syms. */ | |
cf35638d | 13617 | if (r_symndx != STN_UNDEF |
0d4792f7 AM |
13618 | && r_type != R_PPC64_NONE |
13619 | && (h == NULL | |
039b3fef AM |
13620 | || h->elf.root.type == bfd_link_hash_defined |
13621 | || h->elf.root.type == bfd_link_hash_defweak) | |
1d483afe AM |
13622 | && (IS_PPC64_TLS_RELOC (r_type) |
13623 | != (sym_type == STT_TLS | |
13624 | || (sym_type == STT_SECTION | |
13625 | && (sec->flags & SEC_THREAD_LOCAL) != 0)))) | |
0d4792f7 | 13626 | { |
727fc41e AM |
13627 | if (tls_mask != 0 |
13628 | && (r_type == R_PPC64_TLS | |
13629 | || r_type == R_PPC64_TLSGD | |
13630 | || r_type == R_PPC64_TLSLD)) | |
0d4792f7 AM |
13631 | /* R_PPC64_TLS is OK against a symbol in the TOC. */ |
13632 | ; | |
13633 | else | |
25f53a85 | 13634 | info->callbacks->einfo |
1d483afe | 13635 | (!IS_PPC64_TLS_RELOC (r_type) |
695344c0 | 13636 | /* xgettext:c-format */ |
c1c8c1ef | 13637 | ? _("%H: %s used with TLS symbol `%pT'\n") |
695344c0 | 13638 | /* xgettext:c-format */ |
c1c8c1ef | 13639 | : _("%H: %s used with non-TLS symbol `%pT'\n"), |
25f53a85 | 13640 | input_bfd, input_section, rel->r_offset, |
0d4792f7 AM |
13641 | ppc64_elf_howto_table[r_type]->name, |
13642 | sym_name); | |
411e1bfb AM |
13643 | } |
13644 | ||
13645 | /* Ensure reloc mapping code below stays sane. */ | |
13646 | if (R_PPC64_TOC16_LO_DS != R_PPC64_TOC16_DS + 1 | |
13647 | || R_PPC64_TOC16_LO != R_PPC64_TOC16 + 1 | |
13648 | || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TLSGD16 & 3) | |
13649 | || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TLSGD16_LO & 3) | |
13650 | || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TLSGD16_HI & 3) | |
13651 | || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TLSGD16_HA & 3) | |
13652 | || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TPREL16_DS & 3) | |
13653 | || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TPREL16_LO_DS & 3) | |
13654 | || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TPREL16_HI & 3) | |
13655 | || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TPREL16_HA & 3)) | |
13656 | abort (); | |
0d4792f7 | 13657 | |
411e1bfb AM |
13658 | switch (r_type) |
13659 | { | |
13660 | default: | |
411e1bfb AM |
13661 | break; |
13662 | ||
ba761f19 | 13663 | case R_PPC64_LO_DS_OPT: |
95f0d0d2 | 13664 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset - d_offset); |
ba761f19 AM |
13665 | if ((insn & (0x3f << 26)) != 58u << 26) |
13666 | abort (); | |
13667 | insn += (14u << 26) - (58u << 26); | |
95f0d0d2 | 13668 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset - d_offset); |
ba761f19 AM |
13669 | r_type = R_PPC64_TOC16_LO; |
13670 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
13671 | break; | |
13672 | ||
411e1bfb AM |
13673 | case R_PPC64_TOC16: |
13674 | case R_PPC64_TOC16_LO: | |
13675 | case R_PPC64_TOC16_DS: | |
13676 | case R_PPC64_TOC16_LO_DS: | |
411e1bfb AM |
13677 | { |
13678 | /* Check for toc tls entries. */ | |
f961d9dd | 13679 | unsigned char *toc_tls; |
951fd09b | 13680 | int retval; |
411e1bfb | 13681 | |
3a71aa26 AM |
13682 | retval = get_tls_mask (&toc_tls, &toc_symndx, &toc_addend, |
13683 | &local_syms, rel, input_bfd); | |
951fd09b | 13684 | if (retval == 0) |
411e1bfb AM |
13685 | return FALSE; |
13686 | ||
13687 | if (toc_tls) | |
13688 | { | |
951fd09b | 13689 | tls_mask = *toc_tls; |
411e1bfb AM |
13690 | if (r_type == R_PPC64_TOC16_DS |
13691 | || r_type == R_PPC64_TOC16_LO_DS) | |
81407a69 AM |
13692 | { |
13693 | if (tls_mask != 0 | |
13694 | && (tls_mask & (TLS_DTPREL | TLS_TPREL)) == 0) | |
13695 | goto toctprel; | |
13696 | } | |
411e1bfb | 13697 | else |
951fd09b AM |
13698 | { |
13699 | /* If we found a GD reloc pair, then we might be | |
13700 | doing a GD->IE transition. */ | |
13701 | if (retval == 2) | |
13702 | { | |
13703 | tls_gd = TLS_TPRELGD; | |
13704 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
102890f0 | 13705 | goto tls_ldgd_opt; |
951fd09b AM |
13706 | } |
13707 | else if (retval == 3) | |
13708 | { | |
13709 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) | |
102890f0 | 13710 | goto tls_ldgd_opt; |
951fd09b AM |
13711 | } |
13712 | } | |
411e1bfb AM |
13713 | } |
13714 | } | |
13715 | break; | |
13716 | ||
9d6ded02 AM |
13717 | case R_PPC64_GOT_TPREL16_HI: |
13718 | case R_PPC64_GOT_TPREL16_HA: | |
13719 | if (tls_mask != 0 | |
13720 | && (tls_mask & TLS_TPREL) == 0) | |
13721 | { | |
13722 | rel->r_offset -= d_offset; | |
95f0d0d2 | 13723 | bfd_put_32 (input_bfd, NOP, contents + rel->r_offset); |
9d6ded02 AM |
13724 | r_type = R_PPC64_NONE; |
13725 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
13726 | } | |
13727 | break; | |
13728 | ||
411e1bfb AM |
13729 | case R_PPC64_GOT_TPREL16_DS: |
13730 | case R_PPC64_GOT_TPREL16_LO_DS: | |
951fd09b AM |
13731 | if (tls_mask != 0 |
13732 | && (tls_mask & TLS_TPREL) == 0) | |
411e1bfb | 13733 | { |
81407a69 | 13734 | toctprel: |
95f0d0d2 | 13735 | insn = bfd_get_32 (input_bfd, |
c316a17c | 13736 | contents + rel->r_offset - d_offset); |
411e1bfb AM |
13737 | insn &= 31 << 21; |
13738 | insn |= 0x3c0d0000; /* addis 0,13,0 */ | |
95f0d0d2 | 13739 | bfd_put_32 (input_bfd, insn, |
c316a17c | 13740 | contents + rel->r_offset - d_offset); |
411e1bfb | 13741 | r_type = R_PPC64_TPREL16_HA; |
0d4792f7 AM |
13742 | if (toc_symndx != 0) |
13743 | { | |
13744 | rel->r_info = ELF64_R_INFO (toc_symndx, r_type); | |
3a71aa26 | 13745 | rel->r_addend = toc_addend; |
0d4792f7 AM |
13746 | /* We changed the symbol. Start over in order to |
13747 | get h, sym, sec etc. right. */ | |
c316a17c | 13748 | goto again; |
0d4792f7 AM |
13749 | } |
13750 | else | |
13751 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
411e1bfb AM |
13752 | } |
13753 | break; | |
13754 | ||
13755 | case R_PPC64_TLS: | |
951fd09b AM |
13756 | if (tls_mask != 0 |
13757 | && (tls_mask & TLS_TPREL) == 0) | |
411e1bfb | 13758 | { |
95f0d0d2 | 13759 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); |
2d0f3896 AM |
13760 | insn = _bfd_elf_ppc_at_tls_transform (insn, 13); |
13761 | if (insn == 0) | |
411e1bfb | 13762 | abort (); |
95f0d0d2 | 13763 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
411e1bfb | 13764 | /* Was PPC64_TLS which sits on insn boundary, now |
4fe5ca5b GM |
13765 | PPC64_TPREL16_LO which is at low-order half-word. */ |
13766 | rel->r_offset += d_offset; | |
0d4792f7 AM |
13767 | r_type = R_PPC64_TPREL16_LO; |
13768 | if (toc_symndx != 0) | |
13769 | { | |
13770 | rel->r_info = ELF64_R_INFO (toc_symndx, r_type); | |
3a71aa26 | 13771 | rel->r_addend = toc_addend; |
0d4792f7 AM |
13772 | /* We changed the symbol. Start over in order to |
13773 | get h, sym, sec etc. right. */ | |
c316a17c | 13774 | goto again; |
0d4792f7 AM |
13775 | } |
13776 | else | |
13777 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
411e1bfb AM |
13778 | } |
13779 | break; | |
13780 | ||
411e1bfb AM |
13781 | case R_PPC64_GOT_TLSGD16_HI: |
13782 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b AM |
13783 | tls_gd = TLS_TPRELGD; |
13784 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
13785 | goto tls_gdld_hi; | |
13786 | break; | |
13787 | ||
411e1bfb AM |
13788 | case R_PPC64_GOT_TLSLD16_HI: |
13789 | case R_PPC64_GOT_TLSLD16_HA: | |
951fd09b | 13790 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) |
411e1bfb | 13791 | { |
951fd09b AM |
13792 | tls_gdld_hi: |
13793 | if ((tls_mask & tls_gd) != 0) | |
13794 | r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3) | |
13795 | + R_PPC64_GOT_TPREL16_DS); | |
13796 | else | |
411e1bfb | 13797 | { |
4fe5ca5b | 13798 | rel->r_offset -= d_offset; |
95f0d0d2 | 13799 | bfd_put_32 (input_bfd, NOP, contents + rel->r_offset); |
951fd09b | 13800 | r_type = R_PPC64_NONE; |
411e1bfb | 13801 | } |
951fd09b | 13802 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); |
411e1bfb AM |
13803 | } |
13804 | break; | |
13805 | ||
951fd09b AM |
13806 | case R_PPC64_GOT_TLSGD16: |
13807 | case R_PPC64_GOT_TLSGD16_LO: | |
13808 | tls_gd = TLS_TPRELGD; | |
13809 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
102890f0 | 13810 | goto tls_ldgd_opt; |
951fd09b | 13811 | break; |
411e1bfb | 13812 | |
951fd09b AM |
13813 | case R_PPC64_GOT_TLSLD16: |
13814 | case R_PPC64_GOT_TLSLD16_LO: | |
13815 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) | |
13816 | { | |
b9f04fe0 | 13817 | unsigned int insn1, insn2; |
102890f0 AM |
13818 | bfd_vma offset; |
13819 | ||
13820 | tls_ldgd_opt: | |
727fc41e AM |
13821 | offset = (bfd_vma) -1; |
13822 | /* If not using the newer R_PPC64_TLSGD/LD to mark | |
13823 | __tls_get_addr calls, we must trust that the call | |
13824 | stays with its arg setup insns, ie. that the next | |
13825 | reloc is the __tls_get_addr call associated with | |
13826 | the current reloc. Edit both insns. */ | |
13827 | if (input_section->has_tls_get_addr_call | |
13828 | && rel + 1 < relend | |
13829 | && branch_reloc_hash_match (input_bfd, rel + 1, | |
13830 | htab->tls_get_addr, | |
13831 | htab->tls_get_addr_fd)) | |
13832 | offset = rel[1].r_offset; | |
b86ac8e3 AM |
13833 | /* We read the low GOT_TLS (or TOC16) insn because we |
13834 | need to keep the destination reg. It may be | |
13835 | something other than the usual r3, and moved to r3 | |
13836 | before the call by intervening code. */ | |
95f0d0d2 | 13837 | insn1 = bfd_get_32 (input_bfd, |
b86ac8e3 | 13838 | contents + rel->r_offset - d_offset); |
102890f0 | 13839 | if ((tls_mask & tls_gd) != 0) |
411e1bfb | 13840 | { |
102890f0 | 13841 | /* IE */ |
b86ac8e3 | 13842 | insn1 &= (0x1f << 21) | (0x1f << 16); |
102890f0 AM |
13843 | insn1 |= 58 << 26; /* ld */ |
13844 | insn2 = 0x7c636a14; /* add 3,3,13 */ | |
727fc41e | 13845 | if (offset != (bfd_vma) -1) |
f58d5a2d | 13846 | rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE); |
102890f0 AM |
13847 | if ((tls_mask & TLS_EXPLICIT) == 0) |
13848 | r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3) | |
13849 | + R_PPC64_GOT_TPREL16_DS); | |
411e1bfb | 13850 | else |
102890f0 AM |
13851 | r_type += R_PPC64_TOC16_DS - R_PPC64_TOC16; |
13852 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
13853 | } | |
13854 | else | |
13855 | { | |
13856 | /* LE */ | |
b86ac8e3 AM |
13857 | insn1 &= 0x1f << 21; |
13858 | insn1 |= 0x3c0d0000; /* addis r,13,0 */ | |
102890f0 AM |
13859 | insn2 = 0x38630000; /* addi 3,3,0 */ |
13860 | if (tls_gd == 0) | |
951fd09b | 13861 | { |
102890f0 | 13862 | /* Was an LD reloc. */ |
1d483afe AM |
13863 | if (toc_symndx) |
13864 | sec = local_sections[toc_symndx]; | |
13865 | for (r_symndx = 0; | |
13866 | r_symndx < symtab_hdr->sh_info; | |
13867 | r_symndx++) | |
13868 | if (local_sections[r_symndx] == sec) | |
13869 | break; | |
13870 | if (r_symndx >= symtab_hdr->sh_info) | |
cf35638d | 13871 | r_symndx = STN_UNDEF; |
102890f0 | 13872 | rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; |
cf35638d | 13873 | if (r_symndx != STN_UNDEF) |
1d483afe AM |
13874 | rel->r_addend -= (local_syms[r_symndx].st_value |
13875 | + sec->output_offset | |
13876 | + sec->output_section->vma); | |
951fd09b | 13877 | } |
102890f0 | 13878 | else if (toc_symndx != 0) |
3a71aa26 AM |
13879 | { |
13880 | r_symndx = toc_symndx; | |
13881 | rel->r_addend = toc_addend; | |
13882 | } | |
102890f0 AM |
13883 | r_type = R_PPC64_TPREL16_HA; |
13884 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
727fc41e AM |
13885 | if (offset != (bfd_vma) -1) |
13886 | { | |
13887 | rel[1].r_info = ELF64_R_INFO (r_symndx, | |
13888 | R_PPC64_TPREL16_LO); | |
13889 | rel[1].r_offset = offset + d_offset; | |
13890 | rel[1].r_addend = rel->r_addend; | |
13891 | } | |
102890f0 | 13892 | } |
95f0d0d2 | 13893 | bfd_put_32 (input_bfd, insn1, |
3a71aa26 | 13894 | contents + rel->r_offset - d_offset); |
727fc41e | 13895 | if (offset != (bfd_vma) -1) |
b9f04fe0 | 13896 | bfd_put_32 (input_bfd, insn2, contents + offset); |
727fc41e AM |
13897 | if ((tls_mask & tls_gd) == 0 |
13898 | && (tls_gd == 0 || toc_symndx != 0)) | |
13899 | { | |
13900 | /* We changed the symbol. Start over in order | |
13901 | to get h, sym, sec etc. right. */ | |
c316a17c | 13902 | goto again; |
727fc41e AM |
13903 | } |
13904 | } | |
13905 | break; | |
13906 | ||
13907 | case R_PPC64_TLSGD: | |
675e2809 AM |
13908 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0 |
13909 | && rel + 1 < relend) | |
727fc41e | 13910 | { |
b9f04fe0 | 13911 | unsigned int insn2; |
727fc41e AM |
13912 | bfd_vma offset = rel->r_offset; |
13913 | ||
13914 | if ((tls_mask & TLS_TPRELGD) != 0) | |
13915 | { | |
13916 | /* IE */ | |
13917 | r_type = R_PPC64_NONE; | |
13918 | insn2 = 0x7c636a14; /* add 3,3,13 */ | |
13919 | } | |
13920 | else | |
13921 | { | |
13922 | /* LE */ | |
13923 | if (toc_symndx != 0) | |
13924 | { | |
13925 | r_symndx = toc_symndx; | |
13926 | rel->r_addend = toc_addend; | |
13927 | } | |
13928 | r_type = R_PPC64_TPREL16_LO; | |
13929 | rel->r_offset = offset + d_offset; | |
13930 | insn2 = 0x38630000; /* addi 3,3,0 */ | |
13931 | } | |
13932 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
13933 | /* Zap the reloc on the _tls_get_addr call too. */ | |
13934 | BFD_ASSERT (offset == rel[1].r_offset); | |
f58d5a2d | 13935 | rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE); |
95f0d0d2 | 13936 | bfd_put_32 (input_bfd, insn2, contents + offset); |
727fc41e | 13937 | if ((tls_mask & TLS_TPRELGD) == 0 && toc_symndx != 0) |
c316a17c | 13938 | goto again; |
411e1bfb | 13939 | } |
411e1bfb AM |
13940 | break; |
13941 | ||
727fc41e | 13942 | case R_PPC64_TLSLD: |
675e2809 AM |
13943 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0 |
13944 | && rel + 1 < relend) | |
727fc41e | 13945 | { |
b9f04fe0 | 13946 | unsigned int insn2; |
727fc41e AM |
13947 | bfd_vma offset = rel->r_offset; |
13948 | ||
13949 | if (toc_symndx) | |
13950 | sec = local_sections[toc_symndx]; | |
13951 | for (r_symndx = 0; | |
13952 | r_symndx < symtab_hdr->sh_info; | |
13953 | r_symndx++) | |
13954 | if (local_sections[r_symndx] == sec) | |
13955 | break; | |
13956 | if (r_symndx >= symtab_hdr->sh_info) | |
cf35638d | 13957 | r_symndx = STN_UNDEF; |
727fc41e | 13958 | rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; |
cf35638d | 13959 | if (r_symndx != STN_UNDEF) |
727fc41e AM |
13960 | rel->r_addend -= (local_syms[r_symndx].st_value |
13961 | + sec->output_offset | |
13962 | + sec->output_section->vma); | |
13963 | ||
13964 | r_type = R_PPC64_TPREL16_LO; | |
13965 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
13966 | rel->r_offset = offset + d_offset; | |
13967 | /* Zap the reloc on the _tls_get_addr call too. */ | |
13968 | BFD_ASSERT (offset == rel[1].r_offset); | |
f58d5a2d | 13969 | rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE); |
727fc41e | 13970 | insn2 = 0x38630000; /* addi 3,3,0 */ |
95f0d0d2 | 13971 | bfd_put_32 (input_bfd, insn2, contents + offset); |
c316a17c | 13972 | goto again; |
727fc41e AM |
13973 | } |
13974 | break; | |
13975 | ||
411e1bfb | 13976 | case R_PPC64_DTPMOD64: |
951fd09b AM |
13977 | if (rel + 1 < relend |
13978 | && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64) | |
13979 | && rel[1].r_offset == rel->r_offset + 8) | |
411e1bfb | 13980 | { |
951fd09b AM |
13981 | if ((tls_mask & TLS_GD) == 0) |
13982 | { | |
13983 | rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_NONE); | |
13984 | if ((tls_mask & TLS_TPRELGD) != 0) | |
13985 | r_type = R_PPC64_TPREL64; | |
13986 | else | |
13987 | { | |
4ce794b7 | 13988 | bfd_put_64 (output_bfd, 1, contents + rel->r_offset); |
951fd09b AM |
13989 | r_type = R_PPC64_NONE; |
13990 | } | |
13991 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
13992 | } | |
13993 | } | |
13994 | else | |
13995 | { | |
13996 | if ((tls_mask & TLS_LD) == 0) | |
411e1bfb | 13997 | { |
4ce794b7 | 13998 | bfd_put_64 (output_bfd, 1, contents + rel->r_offset); |
411e1bfb | 13999 | r_type = R_PPC64_NONE; |
951fd09b | 14000 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); |
411e1bfb | 14001 | } |
411e1bfb AM |
14002 | } |
14003 | break; | |
14004 | ||
14005 | case R_PPC64_TPREL64: | |
951fd09b | 14006 | if ((tls_mask & TLS_TPREL) == 0) |
411e1bfb AM |
14007 | { |
14008 | r_type = R_PPC64_NONE; | |
14009 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
14010 | } | |
14011 | break; | |
52a82034 | 14012 | |
006589cf AM |
14013 | case R_PPC64_ENTRY: |
14014 | relocation = TOCstart + htab->sec_info[input_section->id].toc_off; | |
14015 | if (!bfd_link_pic (info) | |
14016 | && !info->traditional_format | |
14017 | && relocation + 0x80008000 <= 0xffffffff) | |
14018 | { | |
14019 | unsigned int insn1, insn2; | |
14020 | ||
14021 | insn1 = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
14022 | insn2 = bfd_get_32 (input_bfd, contents + rel->r_offset + 4); | |
14023 | if ((insn1 & ~0xfffc) == LD_R2_0R12 | |
14024 | && insn2 == ADD_R2_R2_R12) | |
14025 | { | |
95f0d0d2 | 14026 | bfd_put_32 (input_bfd, |
006589cf AM |
14027 | LIS_R2 + PPC_HA (relocation), |
14028 | contents + rel->r_offset); | |
95f0d0d2 | 14029 | bfd_put_32 (input_bfd, |
006589cf AM |
14030 | ADDI_R2_R2 + PPC_LO (relocation), |
14031 | contents + rel->r_offset + 4); | |
14032 | } | |
14033 | } | |
14034 | else | |
14035 | { | |
14036 | relocation -= (rel->r_offset | |
14037 | + input_section->output_offset | |
14038 | + input_section->output_section->vma); | |
14039 | if (relocation + 0x80008000 <= 0xffffffff) | |
14040 | { | |
14041 | unsigned int insn1, insn2; | |
14042 | ||
14043 | insn1 = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
14044 | insn2 = bfd_get_32 (input_bfd, contents + rel->r_offset + 4); | |
14045 | if ((insn1 & ~0xfffc) == LD_R2_0R12 | |
14046 | && insn2 == ADD_R2_R2_R12) | |
14047 | { | |
95f0d0d2 | 14048 | bfd_put_32 (input_bfd, |
006589cf AM |
14049 | ADDIS_R2_R12 + PPC_HA (relocation), |
14050 | contents + rel->r_offset); | |
95f0d0d2 | 14051 | bfd_put_32 (input_bfd, |
006589cf AM |
14052 | ADDI_R2_R2 + PPC_LO (relocation), |
14053 | contents + rel->r_offset + 4); | |
14054 | } | |
14055 | } | |
14056 | } | |
14057 | break; | |
14058 | ||
52a82034 AM |
14059 | case R_PPC64_REL16_HA: |
14060 | /* If we are generating a non-PIC executable, edit | |
14061 | . 0: addis 2,12,.TOC.-0b@ha | |
14062 | . addi 2,2,.TOC.-0b@l | |
14063 | used by ELFv2 global entry points to set up r2, to | |
14064 | . lis 2,.TOC.@ha | |
14065 | . addi 2,2,.TOC.@l | |
14066 | if .TOC. is in range. */ | |
0e1862bb | 14067 | if (!bfd_link_pic (info) |
810d4e75 | 14068 | && !info->traditional_format |
006589cf | 14069 | && !htab->opd_abi |
4f038ee5 | 14070 | && rel->r_addend == d_offset |
52a82034 AM |
14071 | && h != NULL && &h->elf == htab->elf.hgot |
14072 | && rel + 1 < relend | |
14073 | && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_REL16_LO) | |
14074 | && rel[1].r_offset == rel->r_offset + 4 | |
14075 | && rel[1].r_addend == rel->r_addend + 4 | |
14076 | && relocation + 0x80008000 <= 0xffffffff) | |
14077 | { | |
14078 | unsigned int insn1, insn2; | |
14079 | bfd_vma offset = rel->r_offset - d_offset; | |
95f0d0d2 AM |
14080 | insn1 = bfd_get_32 (input_bfd, contents + offset); |
14081 | insn2 = bfd_get_32 (input_bfd, contents + offset + 4); | |
006589cf AM |
14082 | if ((insn1 & 0xffff0000) == ADDIS_R2_R12 |
14083 | && (insn2 & 0xffff0000) == ADDI_R2_R2) | |
52a82034 AM |
14084 | { |
14085 | r_type = R_PPC64_ADDR16_HA; | |
14086 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
14087 | rel->r_addend -= d_offset; | |
14088 | rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_ADDR16_LO); | |
14089 | rel[1].r_addend -= d_offset + 4; | |
95f0d0d2 | 14090 | bfd_put_32 (input_bfd, LIS_R2, contents + offset); |
52a82034 AM |
14091 | } |
14092 | } | |
14093 | break; | |
411e1bfb AM |
14094 | } |
14095 | ||
14096 | /* Handle other relocations that tweak non-addend part of insn. */ | |
86c76c7b | 14097 | insn = 0; |
b25116a9 AM |
14098 | max_br_offset = 1 << 25; |
14099 | addend = rel->r_addend; | |
bc30df16 | 14100 | reloc_dest = DEST_NORMAL; |
65f38f15 | 14101 | switch (r_type) |
5bd4f169 AM |
14102 | { |
14103 | default: | |
65f38f15 | 14104 | break; |
5bd4f169 | 14105 | |
3b421ab3 AM |
14106 | case R_PPC64_TOCSAVE: |
14107 | if (relocation + addend == (rel->r_offset | |
14108 | + input_section->output_offset | |
14109 | + input_section->output_section->vma) | |
14110 | && tocsave_find (htab, NO_INSERT, | |
14111 | &local_syms, rel, input_bfd)) | |
14112 | { | |
14113 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
14114 | if (insn == NOP | |
14115 | || insn == CROR_151515 || insn == CROR_313131) | |
a078d95a AM |
14116 | bfd_put_32 (input_bfd, |
14117 | STD_R2_0R1 + STK_TOC (htab), | |
3b421ab3 AM |
14118 | contents + rel->r_offset); |
14119 | } | |
14120 | break; | |
14121 | ||
65f38f15 AM |
14122 | /* Branch taken prediction relocations. */ |
14123 | case R_PPC64_ADDR14_BRTAKEN: | |
14124 | case R_PPC64_REL14_BRTAKEN: | |
cedb70c5 | 14125 | insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */ |
1a0670f3 | 14126 | /* Fall through. */ |
65f38f15 | 14127 | |
86c76c7b | 14128 | /* Branch not taken prediction relocations. */ |
65f38f15 AM |
14129 | case R_PPC64_ADDR14_BRNTAKEN: |
14130 | case R_PPC64_REL14_BRNTAKEN: | |
95f0d0d2 | 14131 | insn |= bfd_get_32 (input_bfd, |
411e1bfb | 14132 | contents + rel->r_offset) & ~(0x01 << 21); |
1a0670f3 | 14133 | /* Fall through. */ |
86c76c7b | 14134 | |
b25116a9 AM |
14135 | case R_PPC64_REL14: |
14136 | max_br_offset = 1 << 15; | |
1a0670f3 | 14137 | /* Fall through. */ |
5bd4f169 | 14138 | |
65f38f15 | 14139 | case R_PPC64_REL24: |
ad8e1ba5 AM |
14140 | /* Calls to functions with a different TOC, such as calls to |
14141 | shared objects, need to alter the TOC pointer. This is | |
14142 | done using a linkage stub. A REL24 branching to these | |
14143 | linkage stubs needs to be followed by a nop, as the nop | |
14144 | will be replaced with an instruction to restore the TOC | |
14145 | base pointer. */ | |
8387904d | 14146 | fdh = h; |
b31867b6 AM |
14147 | if (h != NULL |
14148 | && h->oh != NULL | |
14149 | && h->oh->is_func_descriptor) | |
14150 | fdh = ppc_follow_link (h->oh); | |
31c76678 DK |
14151 | stub_entry = ppc_get_stub_entry (input_section, sec, fdh, &orig_rel, |
14152 | htab); | |
6abec6bc | 14153 | if (stub_entry != NULL |
ad8e1ba5 | 14154 | && (stub_entry->stub_type == ppc_stub_plt_call |
794e51c0 | 14155 | || stub_entry->stub_type == ppc_stub_plt_call_r2save |
ad8e1ba5 AM |
14156 | || stub_entry->stub_type == ppc_stub_plt_branch_r2off |
14157 | || stub_entry->stub_type == ppc_stub_long_branch_r2off)) | |
41bd81ab | 14158 | { |
b25116a9 | 14159 | bfd_boolean can_plt_call = FALSE; |
721956f4 | 14160 | |
6e1816be AM |
14161 | if (stub_entry->stub_type == ppc_stub_plt_call |
14162 | && !htab->opd_abi | |
14163 | && htab->params->plt_localentry0 != 0 | |
14164 | && is_elfv2_localentry0 (&h->elf)) | |
14165 | { | |
14166 | /* The function doesn't use or change r2. */ | |
14167 | can_plt_call = TRUE; | |
14168 | } | |
14169 | ||
f378ab09 | 14170 | /* All of these stubs may modify r2, so there must be a |
ba8ca3e7 AM |
14171 | branch and link followed by a nop. The nop is |
14172 | replaced by an insn to restore r2. */ | |
6e1816be | 14173 | else if (rel->r_offset + 8 <= input_section->size) |
41bd81ab | 14174 | { |
ba8ca3e7 AM |
14175 | unsigned long br; |
14176 | ||
14177 | br = bfd_get_32 (input_bfd, | |
14178 | contents + rel->r_offset); | |
14179 | if ((br & 1) != 0) | |
41bd81ab | 14180 | { |
ba8ca3e7 AM |
14181 | unsigned long nop; |
14182 | ||
14183 | nop = bfd_get_32 (input_bfd, | |
14184 | contents + rel->r_offset + 4); | |
14185 | if (nop == NOP | |
14186 | || nop == CROR_151515 || nop == CROR_313131) | |
a7f2871e | 14187 | { |
ba8ca3e7 AM |
14188 | if (h != NULL |
14189 | && (h == htab->tls_get_addr_fd | |
14190 | || h == htab->tls_get_addr) | |
7c9cf415 | 14191 | && htab->params->tls_get_addr_opt) |
ba8ca3e7 AM |
14192 | { |
14193 | /* Special stub used, leave nop alone. */ | |
14194 | } | |
14195 | else | |
a078d95a AM |
14196 | bfd_put_32 (input_bfd, |
14197 | LD_R2_0R1 + STK_TOC (htab), | |
ba8ca3e7 AM |
14198 | contents + rel->r_offset + 4); |
14199 | can_plt_call = TRUE; | |
a7f2871e | 14200 | } |
41bd81ab | 14201 | } |
5bd4f169 | 14202 | } |
721956f4 | 14203 | |
ba8ca3e7 | 14204 | if (!can_plt_call && h != NULL) |
721956f4 | 14205 | { |
ba8ca3e7 AM |
14206 | const char *name = h->elf.root.root.string; |
14207 | ||
14208 | if (*name == '.') | |
14209 | ++name; | |
14210 | ||
14211 | if (strncmp (name, "__libc_start_main", 17) == 0 | |
14212 | && (name[17] == 0 || name[17] == '@')) | |
6ab189d5 | 14213 | { |
ba8ca3e7 AM |
14214 | /* Allow crt1 branch to go via a toc adjusting |
14215 | stub. Other calls that never return could do | |
14216 | the same, if we could detect such. */ | |
b25116a9 | 14217 | can_plt_call = TRUE; |
6ab189d5 | 14218 | } |
ba8ca3e7 AM |
14219 | } |
14220 | ||
14221 | if (!can_plt_call) | |
14222 | { | |
14223 | /* g++ as of 20130507 emits self-calls without a | |
14224 | following nop. This is arguably wrong since we | |
14225 | have conflicting information. On the one hand a | |
14226 | global symbol and on the other a local call | |
14227 | sequence, but don't error for this special case. | |
14228 | It isn't possible to cheaply verify we have | |
14229 | exactly such a call. Allow all calls to the same | |
14230 | section. */ | |
14231 | asection *code_sec = sec; | |
14232 | ||
14233 | if (get_opd_info (sec) != NULL) | |
ad8e1ba5 | 14234 | { |
ba8ca3e7 AM |
14235 | bfd_vma off = (relocation + addend |
14236 | - sec->output_section->vma | |
14237 | - sec->output_offset); | |
bc30df16 | 14238 | |
ba8ca3e7 | 14239 | opd_entry_value (sec, off, &code_sec, NULL, FALSE); |
ad8e1ba5 | 14240 | } |
ba8ca3e7 AM |
14241 | if (code_sec == input_section) |
14242 | can_plt_call = TRUE; | |
14243 | } | |
14244 | ||
14245 | if (!can_plt_call) | |
14246 | { | |
4805fc55 AM |
14247 | if (stub_entry->stub_type == ppc_stub_plt_call |
14248 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
14249 | info->callbacks->einfo | |
695344c0 | 14250 | /* xgettext:c-format */ |
c1c8c1ef | 14251 | (_("%H: call to `%pT' lacks nop, can't restore toc; " |
4805fc55 AM |
14252 | "recompile with -fPIC\n"), |
14253 | input_bfd, input_section, rel->r_offset, sym_name); | |
14254 | else | |
14255 | info->callbacks->einfo | |
695344c0 | 14256 | /* xgettext:c-format */ |
c1c8c1ef | 14257 | (_("%H: call to `%pT' lacks nop, can't restore toc; " |
4805fc55 AM |
14258 | "(-mcmodel=small toc adjust stub)\n"), |
14259 | input_bfd, input_section, rel->r_offset, sym_name); | |
ba8ca3e7 AM |
14260 | |
14261 | bfd_set_error (bfd_error_bad_value); | |
14262 | ret = FALSE; | |
721956f4 AM |
14263 | } |
14264 | ||
b25116a9 | 14265 | if (can_plt_call |
794e51c0 AM |
14266 | && (stub_entry->stub_type == ppc_stub_plt_call |
14267 | || stub_entry->stub_type == ppc_stub_plt_call_r2save)) | |
b25116a9 AM |
14268 | unresolved_reloc = FALSE; |
14269 | } | |
14270 | ||
6abec6bc AM |
14271 | if ((stub_entry == NULL |
14272 | || stub_entry->stub_type == ppc_stub_long_branch | |
14273 | || stub_entry->stub_type == ppc_stub_plt_branch) | |
8387904d AM |
14274 | && get_opd_info (sec) != NULL) |
14275 | { | |
14276 | /* The branch destination is the value of the opd entry. */ | |
4cc603a5 AM |
14277 | bfd_vma off = (relocation + addend |
14278 | - sec->output_section->vma | |
14279 | - sec->output_offset); | |
aef36ac1 | 14280 | bfd_vma dest = opd_entry_value (sec, off, NULL, NULL, FALSE); |
8387904d AM |
14281 | if (dest != (bfd_vma) -1) |
14282 | { | |
14283 | relocation = dest; | |
14284 | addend = 0; | |
bc30df16 | 14285 | reloc_dest = DEST_OPD; |
8387904d AM |
14286 | } |
14287 | } | |
14288 | ||
b25116a9 AM |
14289 | /* If the branch is out of reach we ought to have a long |
14290 | branch stub. */ | |
14291 | from = (rel->r_offset | |
14292 | + input_section->output_offset | |
14293 | + input_section->output_section->vma); | |
14294 | ||
6911b7dc AM |
14295 | relocation += PPC64_LOCAL_ENTRY_OFFSET (fdh |
14296 | ? fdh->elf.other | |
14297 | : sym->st_other); | |
14298 | ||
6abec6bc AM |
14299 | if (stub_entry != NULL |
14300 | && (stub_entry->stub_type == ppc_stub_long_branch | |
14301 | || stub_entry->stub_type == ppc_stub_plt_branch) | |
14302 | && (r_type == R_PPC64_ADDR14_BRTAKEN | |
14303 | || r_type == R_PPC64_ADDR14_BRNTAKEN | |
14304 | || (relocation + addend - from + max_br_offset | |
14305 | < 2 * max_br_offset))) | |
14306 | /* Don't use the stub if this branch is in range. */ | |
14307 | stub_entry = NULL; | |
b25116a9 AM |
14308 | |
14309 | if (stub_entry != NULL) | |
14310 | { | |
14311 | /* Munge up the value and addend so that we call the stub | |
14312 | rather than the procedure directly. */ | |
a4b6fadd AM |
14313 | asection *stub_sec = stub_entry->group->stub_sec; |
14314 | ||
14315 | if (stub_entry->stub_type == ppc_stub_save_res) | |
14316 | relocation += (stub_sec->output_offset | |
14317 | + stub_sec->output_section->vma | |
14318 | + stub_sec->size - htab->sfpr->size | |
14319 | - htab->sfpr->output_offset | |
14320 | - htab->sfpr->output_section->vma); | |
14321 | else | |
14322 | relocation = (stub_entry->stub_offset | |
14323 | + stub_sec->output_offset | |
14324 | + stub_sec->output_section->vma); | |
b25116a9 | 14325 | addend = 0; |
bc30df16 | 14326 | reloc_dest = DEST_STUB; |
3b421ab3 | 14327 | |
954b63d4 | 14328 | if ((stub_entry->stub_type == ppc_stub_plt_call |
794e51c0 AM |
14329 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) |
14330 | && (ALWAYS_EMIT_R2SAVE | |
14331 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
3b421ab3 AM |
14332 | && rel + 1 < relend |
14333 | && rel[1].r_offset == rel->r_offset + 4 | |
14334 | && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOCSAVE) | |
14335 | relocation += 4; | |
b25116a9 AM |
14336 | } |
14337 | ||
14338 | if (insn != 0) | |
14339 | { | |
794e51c0 | 14340 | if (is_isa_v2) |
721956f4 | 14341 | { |
b25116a9 AM |
14342 | /* Set 'a' bit. This is 0b00010 in BO field for branch |
14343 | on CR(BI) insns (BO == 001at or 011at), and 0b01000 | |
14344 | for branch on CTR insns (BO == 1a00t or 1a01t). */ | |
14345 | if ((insn & (0x14 << 21)) == (0x04 << 21)) | |
14346 | insn |= 0x02 << 21; | |
14347 | else if ((insn & (0x14 << 21)) == (0x10 << 21)) | |
14348 | insn |= 0x08 << 21; | |
14349 | else | |
14350 | break; | |
14351 | } | |
14352 | else | |
14353 | { | |
14354 | /* Invert 'y' bit if not the default. */ | |
4cc603a5 | 14355 | if ((bfd_signed_vma) (relocation + addend - from) < 0) |
b25116a9 | 14356 | insn ^= 0x01 << 21; |
721956f4 | 14357 | } |
b25116a9 | 14358 | |
95f0d0d2 | 14359 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
5bd4f169 | 14360 | } |
e86ce104 | 14361 | |
06da1e8e AM |
14362 | /* NOP out calls to undefined weak functions. |
14363 | We can thus call a weak function without first | |
14364 | checking whether the function is defined. */ | |
b25116a9 | 14365 | else if (h != NULL |
039b3fef | 14366 | && h->elf.root.type == bfd_link_hash_undefweak |
766bc656 | 14367 | && h->elf.dynindx == -1 |
b25116a9 AM |
14368 | && r_type == R_PPC64_REL24 |
14369 | && relocation == 0 | |
4cc603a5 | 14370 | && addend == 0) |
e86ce104 | 14371 | { |
95f0d0d2 | 14372 | bfd_put_32 (input_bfd, NOP, contents + rel->r_offset); |
c316a17c | 14373 | goto copy_reloc; |
e86ce104 | 14374 | } |
65f38f15 AM |
14375 | break; |
14376 | } | |
5bd4f169 | 14377 | |
65f38f15 | 14378 | /* Set `addend'. */ |
411e1bfb | 14379 | tls_type = 0; |
65f38f15 AM |
14380 | switch (r_type) |
14381 | { | |
14382 | default: | |
cf97bcb0 AM |
14383 | /* xgettext:c-format */ |
14384 | _bfd_error_handler (_("%pB: %s unsupported"), | |
14385 | input_bfd, ppc64_elf_howto_table[r_type]->name); | |
5bd4f169 | 14386 | |
65f38f15 | 14387 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 14388 | ret = FALSE; |
c316a17c | 14389 | goto copy_reloc; |
5bd4f169 | 14390 | |
65f38f15 | 14391 | case R_PPC64_NONE: |
411e1bfb | 14392 | case R_PPC64_TLS: |
727fc41e AM |
14393 | case R_PPC64_TLSGD: |
14394 | case R_PPC64_TLSLD: | |
3b421ab3 | 14395 | case R_PPC64_TOCSAVE: |
04c9666a AM |
14396 | case R_PPC64_GNU_VTINHERIT: |
14397 | case R_PPC64_GNU_VTENTRY: | |
006589cf | 14398 | case R_PPC64_ENTRY: |
c316a17c | 14399 | goto copy_reloc; |
5bd4f169 AM |
14400 | |
14401 | /* GOT16 relocations. Like an ADDR16 using the symbol's | |
14402 | address in the GOT as relocation value instead of the | |
411e1bfb | 14403 | symbol's value itself. Also, create a GOT entry for the |
5bd4f169 | 14404 | symbol and put the symbol value there. */ |
411e1bfb AM |
14405 | case R_PPC64_GOT_TLSGD16: |
14406 | case R_PPC64_GOT_TLSGD16_LO: | |
14407 | case R_PPC64_GOT_TLSGD16_HI: | |
14408 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b | 14409 | tls_type = TLS_TLS | TLS_GD; |
411e1bfb AM |
14410 | goto dogot; |
14411 | ||
14412 | case R_PPC64_GOT_TLSLD16: | |
14413 | case R_PPC64_GOT_TLSLD16_LO: | |
14414 | case R_PPC64_GOT_TLSLD16_HI: | |
14415 | case R_PPC64_GOT_TLSLD16_HA: | |
951fd09b | 14416 | tls_type = TLS_TLS | TLS_LD; |
411e1bfb AM |
14417 | goto dogot; |
14418 | ||
14419 | case R_PPC64_GOT_TPREL16_DS: | |
14420 | case R_PPC64_GOT_TPREL16_LO_DS: | |
14421 | case R_PPC64_GOT_TPREL16_HI: | |
14422 | case R_PPC64_GOT_TPREL16_HA: | |
14423 | tls_type = TLS_TLS | TLS_TPREL; | |
14424 | goto dogot; | |
14425 | ||
14426 | case R_PPC64_GOT_DTPREL16_DS: | |
14427 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
14428 | case R_PPC64_GOT_DTPREL16_HI: | |
14429 | case R_PPC64_GOT_DTPREL16_HA: | |
14430 | tls_type = TLS_TLS | TLS_DTPREL; | |
14431 | goto dogot; | |
14432 | ||
65f38f15 AM |
14433 | case R_PPC64_GOT16: |
14434 | case R_PPC64_GOT16_LO: | |
14435 | case R_PPC64_GOT16_HI: | |
14436 | case R_PPC64_GOT16_HA: | |
14437 | case R_PPC64_GOT16_DS: | |
14438 | case R_PPC64_GOT16_LO_DS: | |
411e1bfb | 14439 | dogot: |
5bd4f169 AM |
14440 | { |
14441 | /* Relocation is to the entry for this symbol in the global | |
14442 | offset table. */ | |
e717da7e | 14443 | asection *got; |
d881513a | 14444 | bfd_vma *offp; |
5bd4f169 | 14445 | bfd_vma off; |
d881513a | 14446 | unsigned long indx = 0; |
927be08e | 14447 | struct got_entry *ent; |
65f38f15 | 14448 | |
d881513a AM |
14449 | if (tls_type == (TLS_TLS | TLS_LD) |
14450 | && (h == NULL | |
f5385ebf | 14451 | || !h->elf.def_dynamic)) |
927be08e | 14452 | ent = ppc64_tlsld_got (input_bfd); |
411e1bfb | 14453 | else |
5bd4f169 | 14454 | { |
d881513a AM |
14455 | if (h != NULL) |
14456 | { | |
f0158f44 AM |
14457 | if (!htab->elf.dynamic_sections_created |
14458 | || h->elf.dynindx == -1 | |
14459 | || SYMBOL_REFERENCES_LOCAL (info, &h->elf) | |
21d68fcd | 14460 | || UNDEFWEAK_NO_DYNAMIC_RELOC (info, &h->elf)) |
d881513a AM |
14461 | /* This is actually a static link, or it is a |
14462 | -Bsymbolic link and the symbol is defined | |
14463 | locally, or the symbol was forced to be local | |
14464 | because of a version file. */ | |
14465 | ; | |
14466 | else | |
14467 | { | |
039b3fef | 14468 | indx = h->elf.dynindx; |
d881513a AM |
14469 | unresolved_reloc = FALSE; |
14470 | } | |
039b3fef | 14471 | ent = h->elf.got.glist; |
d881513a | 14472 | } |
411e1bfb | 14473 | else |
5bd4f169 | 14474 | { |
d881513a AM |
14475 | if (local_got_ents == NULL) |
14476 | abort (); | |
14477 | ent = local_got_ents[r_symndx]; | |
5bd4f169 | 14478 | } |
d881513a AM |
14479 | |
14480 | for (; ent != NULL; ent = ent->next) | |
31c76678 | 14481 | if (ent->addend == orig_rel.r_addend |
e717da7e | 14482 | && ent->owner == input_bfd |
d881513a AM |
14483 | && ent->tls_type == tls_type) |
14484 | break; | |
5bd4f169 | 14485 | } |
411e1bfb | 14486 | |
927be08e AM |
14487 | if (ent == NULL) |
14488 | abort (); | |
14489 | if (ent->is_indirect) | |
14490 | ent = ent->got.ent; | |
14491 | offp = &ent->got.offset; | |
14492 | got = ppc64_elf_tdata (ent->owner)->got; | |
e717da7e AM |
14493 | if (got == NULL) |
14494 | abort (); | |
14495 | ||
411e1bfb AM |
14496 | /* The offset must always be a multiple of 8. We use the |
14497 | least significant bit to record whether we have already | |
14498 | processed this entry. */ | |
d881513a | 14499 | off = *offp; |
411e1bfb AM |
14500 | if ((off & 1) != 0) |
14501 | off &= ~1; | |
5bd4f169 AM |
14502 | else |
14503 | { | |
411e1bfb AM |
14504 | /* Generate relocs for the dynamic linker, except in |
14505 | the case of TLSLD where we'll use one entry per | |
14506 | module. */ | |
25f23106 AM |
14507 | asection *relgot; |
14508 | bfd_boolean ifunc; | |
e717da7e | 14509 | |
d881513a | 14510 | *offp = off | 1; |
25f23106 AM |
14511 | relgot = NULL; |
14512 | ifunc = (h != NULL | |
14513 | ? h->elf.type == STT_GNU_IFUNC | |
14514 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC); | |
19e08130 | 14515 | if (ifunc) |
82e66161 AM |
14516 | { |
14517 | relgot = htab->elf.irelplt; | |
14518 | if (indx == 0) | |
14519 | htab->local_ifunc_resolver = 1; | |
14520 | else if (is_static_defined (&h->elf)) | |
14521 | htab->maybe_local_ifunc_resolver = 1; | |
14522 | } | |
f0158f44 AM |
14523 | else if (indx != 0 |
14524 | || (bfd_link_pic (info) | |
14525 | && (h == NULL | |
21d68fcd | 14526 | || !UNDEFWEAK_NO_DYNAMIC_RELOC (info, &h->elf) |
f0158f44 | 14527 | || (tls_type == (TLS_TLS | TLS_LD) |
f15d0b54 AM |
14528 | && !h->elf.def_dynamic)) |
14529 | && !(tls_type == (TLS_TLS | TLS_TPREL) | |
14530 | && bfd_link_executable (info) | |
14531 | && SYMBOL_REFERENCES_LOCAL (info, &h->elf)))) | |
19e08130 | 14532 | relgot = ppc64_elf_tdata (ent->owner)->relgot; |
25f23106 | 14533 | if (relgot != NULL) |
5bd4f169 | 14534 | { |
e717da7e AM |
14535 | outrel.r_offset = (got->output_section->vma |
14536 | + got->output_offset | |
411e1bfb | 14537 | + off); |
4cc603a5 | 14538 | outrel.r_addend = addend; |
d881513a | 14539 | if (tls_type & (TLS_LD | TLS_GD)) |
5bd4f169 | 14540 | { |
411e1bfb | 14541 | outrel.r_addend = 0; |
e515b051 | 14542 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPMOD64); |
d881513a AM |
14543 | if (tls_type == (TLS_TLS | TLS_GD)) |
14544 | { | |
e717da7e AM |
14545 | loc = relgot->contents; |
14546 | loc += (relgot->reloc_count++ | |
d881513a AM |
14547 | * sizeof (Elf64_External_Rela)); |
14548 | bfd_elf64_swap_reloca_out (output_bfd, | |
14549 | &outrel, loc); | |
e515b051 | 14550 | outrel.r_offset += 8; |
4cc603a5 | 14551 | outrel.r_addend = addend; |
d881513a AM |
14552 | outrel.r_info |
14553 | = ELF64_R_INFO (indx, R_PPC64_DTPREL64); | |
d881513a | 14554 | } |
411e1bfb | 14555 | } |
951fd09b | 14556 | else if (tls_type == (TLS_TLS | TLS_DTPREL)) |
411e1bfb | 14557 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64); |
951fd09b | 14558 | else if (tls_type == (TLS_TLS | TLS_TPREL)) |
411e1bfb | 14559 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_TPREL64); |
25f23106 AM |
14560 | else if (indx != 0) |
14561 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT); | |
14562 | else | |
81407a69 | 14563 | { |
25f23106 AM |
14564 | if (ifunc) |
14565 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE); | |
14566 | else | |
14567 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
81407a69 AM |
14568 | |
14569 | /* Write the .got section contents for the sake | |
14570 | of prelink. */ | |
e717da7e | 14571 | loc = got->contents + off; |
23fbd6fa JJ |
14572 | bfd_put_64 (output_bfd, outrel.r_addend + relocation, |
14573 | loc); | |
81407a69 | 14574 | } |
81407a69 AM |
14575 | |
14576 | if (indx == 0 && tls_type != (TLS_TLS | TLS_LD)) | |
e515b051 AM |
14577 | { |
14578 | outrel.r_addend += relocation; | |
14579 | if (tls_type & (TLS_GD | TLS_DTPREL | TLS_TPREL)) | |
989f9879 AM |
14580 | { |
14581 | if (htab->elf.tls_sec == NULL) | |
14582 | outrel.r_addend = 0; | |
14583 | else | |
14584 | outrel.r_addend -= htab->elf.tls_sec->vma; | |
14585 | } | |
e515b051 | 14586 | } |
e717da7e AM |
14587 | loc = relgot->contents; |
14588 | loc += (relgot->reloc_count++ | |
411e1bfb AM |
14589 | * sizeof (Elf64_External_Rela)); |
14590 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); | |
14591 | } | |
14592 | ||
ad8e1ba5 | 14593 | /* Init the .got section contents here if we're not |
81407a69 | 14594 | emitting a reloc. */ |
d881513a | 14595 | else |
411e1bfb | 14596 | { |
4cc603a5 | 14597 | relocation += addend; |
f0158f44 | 14598 | if (tls_type != 0) |
411e1bfb | 14599 | { |
989f9879 AM |
14600 | if (htab->elf.tls_sec == NULL) |
14601 | relocation = 0; | |
14602 | else | |
14603 | { | |
f0158f44 AM |
14604 | if (tls_type & TLS_LD) |
14605 | relocation = 0; | |
14606 | else | |
14607 | relocation -= htab->elf.tls_sec->vma + DTP_OFFSET; | |
676ee2b5 | 14608 | if (tls_type & TLS_TPREL) |
989f9879 AM |
14609 | relocation += DTP_OFFSET - TP_OFFSET; |
14610 | } | |
5bd4f169 | 14611 | |
f0158f44 | 14612 | if (tls_type & (TLS_GD | TLS_LD)) |
7b609f53 AM |
14613 | { |
14614 | bfd_put_64 (output_bfd, relocation, | |
e717da7e | 14615 | got->contents + off + 8); |
676ee2b5 | 14616 | relocation = 1; |
7b609f53 | 14617 | } |
411e1bfb AM |
14618 | } |
14619 | bfd_put_64 (output_bfd, relocation, | |
e717da7e | 14620 | got->contents + off); |
5bd4f169 AM |
14621 | } |
14622 | } | |
14623 | ||
65f38f15 AM |
14624 | if (off >= (bfd_vma) -2) |
14625 | abort (); | |
14626 | ||
bf102f86 | 14627 | relocation = got->output_section->vma + got->output_offset + off; |
6f20ed8a | 14628 | addend = -(TOCstart + htab->sec_info[input_section->id].toc_off); |
5bd4f169 | 14629 | } |
65f38f15 AM |
14630 | break; |
14631 | ||
14632 | case R_PPC64_PLT16_HA: | |
14633 | case R_PPC64_PLT16_HI: | |
14634 | case R_PPC64_PLT16_LO: | |
14635 | case R_PPC64_PLT32: | |
14636 | case R_PPC64_PLT64: | |
14637 | /* Relocation is to the entry for this symbol in the | |
14638 | procedure linkage table. */ | |
cbf95972 AM |
14639 | { |
14640 | struct plt_entry **plt_list = NULL; | |
14641 | if (h != NULL) | |
14642 | plt_list = &h->elf.plt.plist; | |
14643 | else if (local_got_ents != NULL) | |
14644 | { | |
14645 | struct plt_entry **local_plt = (struct plt_entry **) | |
14646 | (local_got_ents + symtab_hdr->sh_info); | |
14647 | unsigned char *local_got_tls_masks = (unsigned char *) | |
14648 | (local_plt + symtab_hdr->sh_info); | |
14649 | if ((local_got_tls_masks[r_symndx] & PLT_IFUNC) != 0) | |
14650 | plt_list = local_plt + r_symndx; | |
14651 | } | |
14652 | if (plt_list) | |
14653 | { | |
14654 | struct plt_entry *ent; | |
65f38f15 | 14655 | |
cbf95972 AM |
14656 | for (ent = *plt_list; ent != NULL; ent = ent->next) |
14657 | if (ent->plt.offset != (bfd_vma) -1 | |
14658 | && ent->addend == orig_rel.r_addend) | |
14659 | { | |
14660 | asection *plt; | |
14661 | ||
14662 | plt = htab->elf.splt; | |
14663 | if (!htab->elf.dynamic_sections_created | |
14664 | || h == NULL | |
14665 | || h->elf.dynindx == -1) | |
14666 | plt = htab->elf.iplt; | |
14667 | relocation = (plt->output_section->vma | |
14668 | + plt->output_offset | |
14669 | + ent->plt.offset); | |
14670 | addend = 0; | |
14671 | unresolved_reloc = FALSE; | |
14672 | break; | |
14673 | } | |
14674 | } | |
14675 | } | |
65f38f15 | 14676 | break; |
5bd4f169 | 14677 | |
0b13192e AM |
14678 | case R_PPC64_TOC: |
14679 | /* Relocation value is TOC base. */ | |
14680 | relocation = TOCstart; | |
cf35638d | 14681 | if (r_symndx == STN_UNDEF) |
6f20ed8a | 14682 | relocation += htab->sec_info[input_section->id].toc_off; |
8517fae7 AM |
14683 | else if (unresolved_reloc) |
14684 | ; | |
6f20ed8a AM |
14685 | else if (sec != NULL && sec->id < htab->sec_info_arr_size) |
14686 | relocation += htab->sec_info[sec->id].toc_off; | |
0b13192e AM |
14687 | else |
14688 | unresolved_reloc = TRUE; | |
ab96bf03 | 14689 | goto dodyn; |
0b13192e | 14690 | |
5bd4f169 AM |
14691 | /* TOC16 relocs. We want the offset relative to the TOC base, |
14692 | which is the address of the start of the TOC plus 0x8000. | |
14693 | The TOC consists of sections .got, .toc, .tocbss, and .plt, | |
14694 | in this order. */ | |
65f38f15 AM |
14695 | case R_PPC64_TOC16: |
14696 | case R_PPC64_TOC16_LO: | |
14697 | case R_PPC64_TOC16_HI: | |
14698 | case R_PPC64_TOC16_DS: | |
14699 | case R_PPC64_TOC16_LO_DS: | |
14700 | case R_PPC64_TOC16_HA: | |
6f20ed8a | 14701 | addend -= TOCstart + htab->sec_info[input_section->id].toc_off; |
5bd4f169 AM |
14702 | break; |
14703 | ||
14704 | /* Relocate against the beginning of the section. */ | |
65f38f15 AM |
14705 | case R_PPC64_SECTOFF: |
14706 | case R_PPC64_SECTOFF_LO: | |
14707 | case R_PPC64_SECTOFF_HI: | |
14708 | case R_PPC64_SECTOFF_DS: | |
14709 | case R_PPC64_SECTOFF_LO_DS: | |
14710 | case R_PPC64_SECTOFF_HA: | |
4ce794b7 | 14711 | if (sec != NULL) |
65f38f15 | 14712 | addend -= sec->output_section->vma; |
5bd4f169 AM |
14713 | break; |
14714 | ||
25f23106 AM |
14715 | case R_PPC64_REL16: |
14716 | case R_PPC64_REL16_LO: | |
14717 | case R_PPC64_REL16_HI: | |
14718 | case R_PPC64_REL16_HA: | |
a680de9a | 14719 | case R_PPC64_REL16DX_HA: |
25f23106 AM |
14720 | break; |
14721 | ||
721956f4 AM |
14722 | case R_PPC64_REL14: |
14723 | case R_PPC64_REL14_BRNTAKEN: | |
14724 | case R_PPC64_REL14_BRTAKEN: | |
5d1634d7 AM |
14725 | case R_PPC64_REL24: |
14726 | break; | |
14727 | ||
411e1bfb AM |
14728 | case R_PPC64_TPREL16: |
14729 | case R_PPC64_TPREL16_LO: | |
14730 | case R_PPC64_TPREL16_HI: | |
14731 | case R_PPC64_TPREL16_HA: | |
14732 | case R_PPC64_TPREL16_DS: | |
14733 | case R_PPC64_TPREL16_LO_DS: | |
f9c6b907 AM |
14734 | case R_PPC64_TPREL16_HIGH: |
14735 | case R_PPC64_TPREL16_HIGHA: | |
411e1bfb AM |
14736 | case R_PPC64_TPREL16_HIGHER: |
14737 | case R_PPC64_TPREL16_HIGHERA: | |
14738 | case R_PPC64_TPREL16_HIGHEST: | |
14739 | case R_PPC64_TPREL16_HIGHESTA: | |
766bc656 AM |
14740 | if (h != NULL |
14741 | && h->elf.root.type == bfd_link_hash_undefweak | |
14742 | && h->elf.dynindx == -1) | |
14743 | { | |
14744 | /* Make this relocation against an undefined weak symbol | |
14745 | resolve to zero. This is really just a tweak, since | |
14746 | code using weak externs ought to check that they are | |
14747 | defined before using them. */ | |
14748 | bfd_byte *p = contents + rel->r_offset - d_offset; | |
14749 | ||
95f0d0d2 | 14750 | insn = bfd_get_32 (input_bfd, p); |
766bc656 AM |
14751 | insn = _bfd_elf_ppc_at_tprel_transform (insn, 13); |
14752 | if (insn != 0) | |
95f0d0d2 | 14753 | bfd_put_32 (input_bfd, insn, p); |
766bc656 AM |
14754 | break; |
14755 | } | |
989f9879 AM |
14756 | if (htab->elf.tls_sec != NULL) |
14757 | addend -= htab->elf.tls_sec->vma + TP_OFFSET; | |
7c8bbca5 AM |
14758 | /* The TPREL16 relocs shouldn't really be used in shared |
14759 | libs or with non-local symbols as that will result in | |
14760 | DT_TEXTREL being set, but support them anyway. */ | |
14761 | goto dodyn; | |
411e1bfb AM |
14762 | |
14763 | case R_PPC64_DTPREL16: | |
14764 | case R_PPC64_DTPREL16_LO: | |
14765 | case R_PPC64_DTPREL16_HI: | |
14766 | case R_PPC64_DTPREL16_HA: | |
14767 | case R_PPC64_DTPREL16_DS: | |
14768 | case R_PPC64_DTPREL16_LO_DS: | |
f9c6b907 AM |
14769 | case R_PPC64_DTPREL16_HIGH: |
14770 | case R_PPC64_DTPREL16_HIGHA: | |
411e1bfb AM |
14771 | case R_PPC64_DTPREL16_HIGHER: |
14772 | case R_PPC64_DTPREL16_HIGHERA: | |
14773 | case R_PPC64_DTPREL16_HIGHEST: | |
14774 | case R_PPC64_DTPREL16_HIGHESTA: | |
989f9879 AM |
14775 | if (htab->elf.tls_sec != NULL) |
14776 | addend -= htab->elf.tls_sec->vma + DTP_OFFSET; | |
411e1bfb AM |
14777 | break; |
14778 | ||
45965137 AM |
14779 | case R_PPC64_ADDR64_LOCAL: |
14780 | addend += PPC64_LOCAL_ENTRY_OFFSET (h != NULL | |
14781 | ? h->elf.other | |
14782 | : sym->st_other); | |
14783 | break; | |
14784 | ||
e515b051 AM |
14785 | case R_PPC64_DTPMOD64: |
14786 | relocation = 1; | |
14787 | addend = 0; | |
14788 | goto dodyn; | |
14789 | ||
411e1bfb | 14790 | case R_PPC64_TPREL64: |
989f9879 AM |
14791 | if (htab->elf.tls_sec != NULL) |
14792 | addend -= htab->elf.tls_sec->vma + TP_OFFSET; | |
411e1bfb AM |
14793 | goto dodyn; |
14794 | ||
14795 | case R_PPC64_DTPREL64: | |
989f9879 AM |
14796 | if (htab->elf.tls_sec != NULL) |
14797 | addend -= htab->elf.tls_sec->vma + DTP_OFFSET; | |
1a0670f3 | 14798 | /* Fall through. */ |
411e1bfb | 14799 | |
65f38f15 AM |
14800 | /* Relocations that may need to be propagated if this is a |
14801 | dynamic object. */ | |
04c9666a | 14802 | case R_PPC64_REL30: |
65f38f15 AM |
14803 | case R_PPC64_REL32: |
14804 | case R_PPC64_REL64: | |
14805 | case R_PPC64_ADDR14: | |
14806 | case R_PPC64_ADDR14_BRNTAKEN: | |
14807 | case R_PPC64_ADDR14_BRTAKEN: | |
14808 | case R_PPC64_ADDR16: | |
14809 | case R_PPC64_ADDR16_DS: | |
14810 | case R_PPC64_ADDR16_HA: | |
14811 | case R_PPC64_ADDR16_HI: | |
f9c6b907 AM |
14812 | case R_PPC64_ADDR16_HIGH: |
14813 | case R_PPC64_ADDR16_HIGHA: | |
65f38f15 AM |
14814 | case R_PPC64_ADDR16_HIGHER: |
14815 | case R_PPC64_ADDR16_HIGHERA: | |
14816 | case R_PPC64_ADDR16_HIGHEST: | |
14817 | case R_PPC64_ADDR16_HIGHESTA: | |
14818 | case R_PPC64_ADDR16_LO: | |
14819 | case R_PPC64_ADDR16_LO_DS: | |
14820 | case R_PPC64_ADDR24: | |
65f38f15 AM |
14821 | case R_PPC64_ADDR32: |
14822 | case R_PPC64_ADDR64: | |
14823 | case R_PPC64_UADDR16: | |
14824 | case R_PPC64_UADDR32: | |
14825 | case R_PPC64_UADDR64: | |
411e1bfb | 14826 | dodyn: |
5d1634d7 | 14827 | if ((input_section->flags & SEC_ALLOC) == 0) |
ec338859 AM |
14828 | break; |
14829 | ||
41bd81ab AM |
14830 | if (NO_OPD_RELOCS && is_opd) |
14831 | break; | |
14832 | ||
8a9e8e72 | 14833 | if (bfd_link_pic (info) |
b1b07054 AM |
14834 | ? ((h == NULL |
14835 | || h->dyn_relocs != NULL) | |
14836 | && ((h != NULL && pc_dynrelocs (h)) | |
14837 | || must_be_dyn_reloc (info, r_type))) | |
8a9e8e72 AM |
14838 | : (h != NULL |
14839 | ? h->dyn_relocs != NULL | |
d311bc8b | 14840 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)) |
65f38f15 | 14841 | { |
b34976b6 | 14842 | bfd_boolean skip, relocate; |
65f38f15 | 14843 | asection *sreloc; |
1cf1f670 | 14844 | bfd_vma out_off; |
82e66161 | 14845 | long indx = 0; |
65f38f15 AM |
14846 | |
14847 | /* When generating a dynamic object, these relocations | |
14848 | are copied into the output file to be resolved at run | |
14849 | time. */ | |
14850 | ||
b34976b6 AM |
14851 | skip = FALSE; |
14852 | relocate = FALSE; | |
65f38f15 | 14853 | |
1cf1f670 AM |
14854 | out_off = _bfd_elf_section_offset (output_bfd, info, |
14855 | input_section, rel->r_offset); | |
14856 | if (out_off == (bfd_vma) -1) | |
b34976b6 | 14857 | skip = TRUE; |
1cf1f670 | 14858 | else if (out_off == (bfd_vma) -2) |
b34976b6 | 14859 | skip = TRUE, relocate = TRUE; |
1cf1f670 AM |
14860 | out_off += (input_section->output_section->vma |
14861 | + input_section->output_offset); | |
14862 | outrel.r_offset = out_off; | |
411e1bfb | 14863 | outrel.r_addend = rel->r_addend; |
65f38f15 | 14864 | |
1cf1f670 AM |
14865 | /* Optimize unaligned reloc use. */ |
14866 | if ((r_type == R_PPC64_ADDR64 && (out_off & 7) != 0) | |
14867 | || (r_type == R_PPC64_UADDR64 && (out_off & 7) == 0)) | |
14868 | r_type ^= R_PPC64_ADDR64 ^ R_PPC64_UADDR64; | |
14869 | else if ((r_type == R_PPC64_ADDR32 && (out_off & 3) != 0) | |
14870 | || (r_type == R_PPC64_UADDR32 && (out_off & 3) == 0)) | |
14871 | r_type ^= R_PPC64_ADDR32 ^ R_PPC64_UADDR32; | |
14872 | else if ((r_type == R_PPC64_ADDR16 && (out_off & 1) != 0) | |
14873 | || (r_type == R_PPC64_UADDR16 && (out_off & 1) == 0)) | |
14874 | r_type ^= R_PPC64_ADDR16 ^ R_PPC64_UADDR16; | |
14875 | ||
65f38f15 | 14876 | if (skip) |
0bb2d96a | 14877 | memset (&outrel, 0, sizeof outrel); |
afe397ea | 14878 | else if (!SYMBOL_REFERENCES_LOCAL (info, &h->elf) |
0b13192e AM |
14879 | && !is_opd |
14880 | && r_type != R_PPC64_TOC) | |
14acf4dc | 14881 | { |
82e66161 AM |
14882 | indx = h->elf.dynindx; |
14883 | BFD_ASSERT (indx != -1); | |
14884 | outrel.r_info = ELF64_R_INFO (indx, r_type); | |
14acf4dc | 14885 | } |
65f38f15 AM |
14886 | else |
14887 | { | |
41bd81ab AM |
14888 | /* This symbol is local, or marked to become local, |
14889 | or this is an opd section reloc which must point | |
14890 | at a local function. */ | |
65f38f15 | 14891 | outrel.r_addend += relocation; |
e86ce104 | 14892 | if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC) |
65f38f15 | 14893 | { |
3fad3c7c | 14894 | if (is_opd && h != NULL) |
afbe61cf AM |
14895 | { |
14896 | /* Lie about opd entries. This case occurs | |
14897 | when building shared libraries and we | |
14898 | reference a function in another shared | |
3fad3c7c AM |
14899 | lib. The same thing happens for a weak |
14900 | definition in an application that's | |
14901 | overridden by a strong definition in a | |
14902 | shared lib. (I believe this is a generic | |
14903 | bug in binutils handling of weak syms.) | |
14904 | In these cases we won't use the opd | |
1e2f5b6e | 14905 | entry in this lib. */ |
b34976b6 | 14906 | unresolved_reloc = FALSE; |
afbe61cf | 14907 | } |
25f23106 AM |
14908 | if (!is_opd |
14909 | && r_type == R_PPC64_ADDR64 | |
14910 | && (h != NULL | |
14911 | ? h->elf.type == STT_GNU_IFUNC | |
14912 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)) | |
14913 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE); | |
14914 | else | |
14915 | { | |
14916 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
81407a69 | 14917 | |
25f23106 AM |
14918 | /* We need to relocate .opd contents for ld.so. |
14919 | Prelink also wants simple and consistent rules | |
14920 | for relocs. This make all RELATIVE relocs have | |
14921 | *r_offset equal to r_addend. */ | |
14922 | relocate = TRUE; | |
14923 | } | |
65f38f15 AM |
14924 | } |
14925 | else | |
14926 | { | |
25f23106 AM |
14927 | if (h != NULL |
14928 | ? h->elf.type == STT_GNU_IFUNC | |
14929 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
14930 | { | |
25f53a85 | 14931 | info->callbacks->einfo |
695344c0 | 14932 | /* xgettext:c-format */ |
174d0a74 | 14933 | (_("%H: %s for indirect " |
c1c8c1ef | 14934 | "function `%pT' unsupported\n"), |
25f53a85 | 14935 | input_bfd, input_section, rel->r_offset, |
25f23106 AM |
14936 | ppc64_elf_howto_table[r_type]->name, |
14937 | sym_name); | |
14938 | ret = FALSE; | |
14939 | } | |
cf35638d | 14940 | else if (r_symndx == STN_UNDEF || bfd_is_abs_section (sec)) |
65f38f15 AM |
14941 | ; |
14942 | else if (sec == NULL || sec->owner == NULL) | |
14943 | { | |
14944 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 14945 | return FALSE; |
65f38f15 AM |
14946 | } |
14947 | else | |
14948 | { | |
14949 | asection *osec; | |
14950 | ||
14951 | osec = sec->output_section; | |
14952 | indx = elf_section_data (osec)->dynindx; | |
14953 | ||
74541ad4 AM |
14954 | if (indx == 0) |
14955 | { | |
14956 | if ((osec->flags & SEC_READONLY) == 0 | |
14957 | && htab->elf.data_index_section != NULL) | |
14958 | osec = htab->elf.data_index_section; | |
14959 | else | |
14960 | osec = htab->elf.text_index_section; | |
14961 | indx = elf_section_data (osec)->dynindx; | |
14962 | } | |
14963 | BFD_ASSERT (indx != 0); | |
14964 | ||
65f38f15 AM |
14965 | /* We are turning this relocation into one |
14966 | against a section symbol, so subtract out | |
14967 | the output section's address but not the | |
14968 | offset of the input section in the output | |
14969 | section. */ | |
14970 | outrel.r_addend -= osec->vma; | |
14971 | } | |
14972 | ||
14973 | outrel.r_info = ELF64_R_INFO (indx, r_type); | |
14974 | } | |
14975 | } | |
14976 | ||
14977 | sreloc = elf_section_data (input_section)->sreloc; | |
19e08130 AM |
14978 | if (h != NULL |
14979 | ? h->elf.type == STT_GNU_IFUNC | |
14980 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
82e66161 AM |
14981 | { |
14982 | sreloc = htab->elf.irelplt; | |
14983 | if (indx == 0) | |
14984 | htab->local_ifunc_resolver = 1; | |
14985 | else if (is_static_defined (&h->elf)) | |
14986 | htab->maybe_local_ifunc_resolver = 1; | |
14987 | } | |
65f38f15 AM |
14988 | if (sreloc == NULL) |
14989 | abort (); | |
14990 | ||
dfbb6ac9 AM |
14991 | if (sreloc->reloc_count * sizeof (Elf64_External_Rela) |
14992 | >= sreloc->size) | |
14993 | abort (); | |
947216bf AM |
14994 | loc = sreloc->contents; |
14995 | loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela); | |
65f38f15 AM |
14996 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); |
14997 | ||
14998 | /* If this reloc is against an external symbol, it will | |
14999 | be computed at runtime, so there's no need to do | |
81407a69 AM |
15000 | anything now. However, for the sake of prelink ensure |
15001 | that the section contents are a known value. */ | |
65f38f15 | 15002 | if (! relocate) |
81407a69 AM |
15003 | { |
15004 | unresolved_reloc = FALSE; | |
15005 | /* The value chosen here is quite arbitrary as ld.so | |
15006 | ignores section contents except for the special | |
15007 | case of .opd where the contents might be accessed | |
15008 | before relocation. Choose zero, as that won't | |
15009 | cause reloc overflow. */ | |
15010 | relocation = 0; | |
15011 | addend = 0; | |
15012 | /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs | |
15013 | to improve backward compatibility with older | |
15014 | versions of ld. */ | |
15015 | if (r_type == R_PPC64_ADDR64) | |
15016 | addend = outrel.r_addend; | |
15017 | /* Adjust pc_relative relocs to have zero in *r_offset. */ | |
4ce794b7 | 15018 | else if (ppc64_elf_howto_table[r_type]->pc_relative) |
f0158f44 | 15019 | addend = outrel.r_offset; |
81407a69 | 15020 | } |
65f38f15 | 15021 | } |
5bd4f169 AM |
15022 | break; |
15023 | ||
65f38f15 AM |
15024 | case R_PPC64_COPY: |
15025 | case R_PPC64_GLOB_DAT: | |
15026 | case R_PPC64_JMP_SLOT: | |
25f23106 | 15027 | case R_PPC64_JMP_IREL: |
65f38f15 AM |
15028 | case R_PPC64_RELATIVE: |
15029 | /* We shouldn't ever see these dynamic relocs in relocatable | |
15030 | files. */ | |
ae9a127f | 15031 | /* Fall through. */ |
65f38f15 AM |
15032 | |
15033 | case R_PPC64_PLTGOT16: | |
15034 | case R_PPC64_PLTGOT16_DS: | |
15035 | case R_PPC64_PLTGOT16_HA: | |
15036 | case R_PPC64_PLTGOT16_HI: | |
15037 | case R_PPC64_PLTGOT16_LO: | |
15038 | case R_PPC64_PLTGOT16_LO_DS: | |
15039 | case R_PPC64_PLTREL32: | |
15040 | case R_PPC64_PLTREL64: | |
15041 | /* These ones haven't been implemented yet. */ | |
15042 | ||
25f53a85 | 15043 | info->callbacks->einfo |
695344c0 | 15044 | /* xgettext:c-format */ |
c1c8c1ef | 15045 | (_("%P: %pB: %s is not supported for `%pT'\n"), |
d003868e | 15046 | input_bfd, |
4ce794b7 | 15047 | ppc64_elf_howto_table[r_type]->name, sym_name); |
5bd4f169 AM |
15048 | |
15049 | bfd_set_error (bfd_error_invalid_operation); | |
b34976b6 | 15050 | ret = FALSE; |
c316a17c | 15051 | goto copy_reloc; |
65f38f15 | 15052 | } |
5bd4f169 | 15053 | |
67f0cbdb AM |
15054 | /* Multi-instruction sequences that access the TOC can be |
15055 | optimized, eg. addis ra,r2,0; addi rb,ra,x; | |
07d6d2b8 | 15056 | to nop; addi rb,r2,x; */ |
67f0cbdb AM |
15057 | switch (r_type) |
15058 | { | |
15059 | default: | |
15060 | break; | |
15061 | ||
15062 | case R_PPC64_GOT_TLSLD16_HI: | |
15063 | case R_PPC64_GOT_TLSGD16_HI: | |
15064 | case R_PPC64_GOT_TPREL16_HI: | |
15065 | case R_PPC64_GOT_DTPREL16_HI: | |
15066 | case R_PPC64_GOT16_HI: | |
15067 | case R_PPC64_TOC16_HI: | |
15068 | /* These relocs would only be useful if building up an | |
15069 | offset to later add to r2, perhaps in an indexed | |
15070 | addressing mode instruction. Don't try to optimize. | |
15071 | Unfortunately, the possibility of someone building up an | |
15072 | offset like this or even with the HA relocs, means that | |
15073 | we need to check the high insn when optimizing the low | |
15074 | insn. */ | |
15075 | break; | |
15076 | ||
15077 | case R_PPC64_GOT_TLSLD16_HA: | |
15078 | case R_PPC64_GOT_TLSGD16_HA: | |
15079 | case R_PPC64_GOT_TPREL16_HA: | |
15080 | case R_PPC64_GOT_DTPREL16_HA: | |
15081 | case R_PPC64_GOT16_HA: | |
15082 | case R_PPC64_TOC16_HA: | |
98528052 | 15083 | if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000 |
560c8763 | 15084 | && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn) |
98528052 AM |
15085 | { |
15086 | bfd_byte *p = contents + (rel->r_offset & ~3); | |
15087 | bfd_put_32 (input_bfd, NOP, p); | |
d830549d | 15088 | goto copy_reloc; |
98528052 | 15089 | } |
67f0cbdb AM |
15090 | break; |
15091 | ||
15092 | case R_PPC64_GOT_TLSLD16_LO: | |
15093 | case R_PPC64_GOT_TLSGD16_LO: | |
15094 | case R_PPC64_GOT_TPREL16_LO_DS: | |
15095 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
15096 | case R_PPC64_GOT16_LO: | |
15097 | case R_PPC64_GOT16_LO_DS: | |
15098 | case R_PPC64_TOC16_LO: | |
15099 | case R_PPC64_TOC16_LO_DS: | |
98528052 | 15100 | if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000 |
560c8763 | 15101 | && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn) |
67f0cbdb AM |
15102 | { |
15103 | bfd_byte *p = contents + (rel->r_offset & ~3); | |
15104 | insn = bfd_get_32 (input_bfd, p); | |
560c8763 AM |
15105 | if ((insn & (0x3f << 26)) == 12u << 26 /* addic */) |
15106 | { | |
15107 | /* Transform addic to addi when we change reg. */ | |
15108 | insn &= ~((0x3f << 26) | (0x1f << 16)); | |
15109 | insn |= (14u << 26) | (2 << 16); | |
15110 | } | |
15111 | else | |
67f0cbdb | 15112 | { |
98528052 AM |
15113 | insn &= ~(0x1f << 16); |
15114 | insn |= 2 << 16; | |
67f0cbdb | 15115 | } |
560c8763 | 15116 | bfd_put_32 (input_bfd, insn, p); |
67f0cbdb AM |
15117 | } |
15118 | break; | |
9a23f96e AM |
15119 | |
15120 | case R_PPC64_TPREL16_HA: | |
15121 | if (htab->do_tls_opt && relocation + addend + 0x8000 < 0x10000) | |
15122 | { | |
15123 | bfd_byte *p = contents + (rel->r_offset & ~3); | |
15124 | insn = bfd_get_32 (input_bfd, p); | |
15125 | if ((insn & ((0x3f << 26) | 0x1f << 16)) | |
15126 | != ((15u << 26) | (13 << 16)) /* addis rt,13,imm */) | |
15127 | /* xgettext:c-format */ | |
15128 | info->callbacks->minfo | |
15129 | (_("%H: warning: %s unexpected insn %#x.\n"), | |
d830549d AM |
15130 | input_bfd, input_section, rel->r_offset, |
15131 | ppc64_elf_howto_table[r_type]->name, insn); | |
9a23f96e | 15132 | else |
d830549d AM |
15133 | { |
15134 | bfd_put_32 (input_bfd, NOP, p); | |
15135 | goto copy_reloc; | |
15136 | } | |
9a23f96e AM |
15137 | } |
15138 | break; | |
15139 | ||
15140 | case R_PPC64_TPREL16_LO: | |
15141 | case R_PPC64_TPREL16_LO_DS: | |
15142 | if (htab->do_tls_opt && relocation + addend + 0x8000 < 0x10000) | |
15143 | { | |
15144 | bfd_byte *p = contents + (rel->r_offset & ~3); | |
15145 | insn = bfd_get_32 (input_bfd, p); | |
15146 | insn &= ~(0x1f << 16); | |
15147 | insn |= 13 << 16; | |
15148 | bfd_put_32 (input_bfd, insn, p); | |
15149 | } | |
15150 | break; | |
67f0cbdb AM |
15151 | } |
15152 | ||
65f38f15 AM |
15153 | /* Do any further special processing. */ |
15154 | switch (r_type) | |
15155 | { | |
15156 | default: | |
15157 | break; | |
15158 | ||
25f23106 | 15159 | case R_PPC64_REL16_HA: |
a680de9a | 15160 | case R_PPC64_REL16DX_HA: |
f9c6b907 AM |
15161 | case R_PPC64_ADDR16_HA: |
15162 | case R_PPC64_ADDR16_HIGHA: | |
65f38f15 AM |
15163 | case R_PPC64_ADDR16_HIGHERA: |
15164 | case R_PPC64_ADDR16_HIGHESTA: | |
65f38f15 AM |
15165 | case R_PPC64_TOC16_HA: |
15166 | case R_PPC64_SECTOFF_HA: | |
411e1bfb | 15167 | case R_PPC64_TPREL16_HA: |
f9c6b907 | 15168 | case R_PPC64_TPREL16_HIGHA: |
411e1bfb | 15169 | case R_PPC64_TPREL16_HIGHERA: |
411e1bfb | 15170 | case R_PPC64_TPREL16_HIGHESTA: |
f9c6b907 AM |
15171 | case R_PPC64_DTPREL16_HA: |
15172 | case R_PPC64_DTPREL16_HIGHA: | |
411e1bfb | 15173 | case R_PPC64_DTPREL16_HIGHERA: |
411e1bfb | 15174 | case R_PPC64_DTPREL16_HIGHESTA: |
65f38f15 AM |
15175 | /* It's just possible that this symbol is a weak symbol |
15176 | that's not actually defined anywhere. In that case, | |
15177 | 'sec' would be NULL, and we should leave the symbol | |
15178 | alone (it will be set to zero elsewhere in the link). */ | |
5c5f6e17 AM |
15179 | if (sec == NULL) |
15180 | break; | |
1a0670f3 | 15181 | /* Fall through. */ |
5c5f6e17 AM |
15182 | |
15183 | case R_PPC64_GOT16_HA: | |
15184 | case R_PPC64_PLTGOT16_HA: | |
15185 | case R_PPC64_PLT16_HA: | |
15186 | case R_PPC64_GOT_TLSGD16_HA: | |
15187 | case R_PPC64_GOT_TLSLD16_HA: | |
15188 | case R_PPC64_GOT_TPREL16_HA: | |
15189 | case R_PPC64_GOT_DTPREL16_HA: | |
15190 | /* Add 0x10000 if sign bit in 0:15 is set. | |
15191 | Bits 0:15 are not used. */ | |
15192 | addend += 0x8000; | |
65f38f15 AM |
15193 | break; |
15194 | ||
15195 | case R_PPC64_ADDR16_DS: | |
15196 | case R_PPC64_ADDR16_LO_DS: | |
15197 | case R_PPC64_GOT16_DS: | |
15198 | case R_PPC64_GOT16_LO_DS: | |
15199 | case R_PPC64_PLT16_LO_DS: | |
15200 | case R_PPC64_SECTOFF_DS: | |
15201 | case R_PPC64_SECTOFF_LO_DS: | |
15202 | case R_PPC64_TOC16_DS: | |
15203 | case R_PPC64_TOC16_LO_DS: | |
15204 | case R_PPC64_PLTGOT16_DS: | |
15205 | case R_PPC64_PLTGOT16_LO_DS: | |
411e1bfb AM |
15206 | case R_PPC64_GOT_TPREL16_DS: |
15207 | case R_PPC64_GOT_TPREL16_LO_DS: | |
15208 | case R_PPC64_GOT_DTPREL16_DS: | |
15209 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
15210 | case R_PPC64_TPREL16_DS: | |
15211 | case R_PPC64_TPREL16_LO_DS: | |
15212 | case R_PPC64_DTPREL16_DS: | |
15213 | case R_PPC64_DTPREL16_LO_DS: | |
adadcc0c AM |
15214 | insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3)); |
15215 | mask = 3; | |
a680de9a PB |
15216 | /* If this reloc is against an lq, lxv, or stxv insn, then |
15217 | the value must be a multiple of 16. This is somewhat of | |
15218 | a hack, but the "correct" way to do this by defining _DQ | |
15219 | forms of all the _DS relocs bloats all reloc switches in | |
15220 | this file. It doesn't make much sense to use these | |
15221 | relocs in data, so testing the insn should be safe. */ | |
15222 | if ((insn & (0x3f << 26)) == (56u << 26) | |
15223 | || ((insn & (0x3f << 26)) == (61u << 26) && (insn & 3) == 1)) | |
adadcc0c | 15224 | mask = 15; |
a680de9a PB |
15225 | relocation += addend; |
15226 | addend = insn & (mask ^ 3); | |
15227 | if ((relocation & mask) != 0) | |
65f38f15 | 15228 | { |
a680de9a | 15229 | relocation ^= relocation & mask; |
25f53a85 | 15230 | info->callbacks->einfo |
695344c0 | 15231 | /* xgettext:c-format */ |
174d0a74 | 15232 | (_("%H: error: %s not a multiple of %u\n"), |
25f53a85 | 15233 | input_bfd, input_section, rel->r_offset, |
d830549d | 15234 | ppc64_elf_howto_table[r_type]->name, |
adadcc0c | 15235 | mask + 1); |
65f38f15 | 15236 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 15237 | ret = FALSE; |
c316a17c | 15238 | goto copy_reloc; |
65f38f15 AM |
15239 | } |
15240 | break; | |
5bd4f169 AM |
15241 | } |
15242 | ||
239e1f3a AM |
15243 | /* Dynamic relocs are not propagated for SEC_DEBUGGING sections |
15244 | because such sections are not SEC_ALLOC and thus ld.so will | |
15245 | not process them. */ | |
d830549d | 15246 | howto = ppc64_elf_howto_table[(int) r_type]; |
65f38f15 | 15247 | if (unresolved_reloc |
239e1f3a | 15248 | && !((input_section->flags & SEC_DEBUGGING) != 0 |
1d5316ab AM |
15249 | && h->elf.def_dynamic) |
15250 | && _bfd_elf_section_offset (output_bfd, info, input_section, | |
15251 | rel->r_offset) != (bfd_vma) -1) | |
9c07fe7c | 15252 | { |
25f53a85 | 15253 | info->callbacks->einfo |
695344c0 | 15254 | /* xgettext:c-format */ |
c1c8c1ef | 15255 | (_("%H: unresolvable %s against `%pT'\n"), |
25f53a85 | 15256 | input_bfd, input_section, rel->r_offset, |
b80eed39 | 15257 | howto->name, |
039b3fef | 15258 | h->elf.root.root.string); |
b34976b6 | 15259 | ret = FALSE; |
9c07fe7c | 15260 | } |
5bd4f169 | 15261 | |
b80eed39 AM |
15262 | /* 16-bit fields in insns mostly have signed values, but a |
15263 | few insns have 16-bit unsigned values. Really, we should | |
15264 | have different reloc types. */ | |
15265 | if (howto->complain_on_overflow != complain_overflow_dont | |
15266 | && howto->dst_mask == 0xffff | |
15267 | && (input_section->flags & SEC_CODE) != 0) | |
15268 | { | |
15269 | enum complain_overflow complain = complain_overflow_signed; | |
15270 | ||
15271 | insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3)); | |
a47622ac AM |
15272 | if ((insn & (0x3f << 26)) == 10u << 26 /* cmpli */) |
15273 | complain = complain_overflow_bitfield; | |
15274 | else if (howto->rightshift == 0 | |
15275 | ? ((insn & (0x3f << 26)) == 28u << 26 /* andi */ | |
15276 | || (insn & (0x3f << 26)) == 24u << 26 /* ori */ | |
15277 | || (insn & (0x3f << 26)) == 26u << 26 /* xori */) | |
15278 | : ((insn & (0x3f << 26)) == 29u << 26 /* andis */ | |
15279 | || (insn & (0x3f << 26)) == 25u << 26 /* oris */ | |
15280 | || (insn & (0x3f << 26)) == 27u << 26 /* xoris */)) | |
b80eed39 AM |
15281 | complain = complain_overflow_unsigned; |
15282 | if (howto->complain_on_overflow != complain) | |
15283 | { | |
15284 | alt_howto = *howto; | |
15285 | alt_howto.complain_on_overflow = complain; | |
15286 | howto = &alt_howto; | |
15287 | } | |
15288 | } | |
15289 | ||
a680de9a PB |
15290 | if (r_type == R_PPC64_REL16DX_HA) |
15291 | { | |
15292 | /* Split field reloc isn't handled by _bfd_final_link_relocate. */ | |
15293 | if (rel->r_offset + 4 > input_section->size) | |
15294 | r = bfd_reloc_outofrange; | |
15295 | else | |
15296 | { | |
15297 | relocation += addend; | |
15298 | relocation -= (rel->r_offset | |
15299 | + input_section->output_offset | |
15300 | + input_section->output_section->vma); | |
3de43e7b | 15301 | relocation = (bfd_signed_vma) relocation >> 16; |
a680de9a PB |
15302 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); |
15303 | insn &= ~0x1fffc1; | |
3de43e7b | 15304 | insn |= (relocation & 0xffc1) | ((relocation & 0x3e) << 15); |
a680de9a PB |
15305 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
15306 | r = bfd_reloc_ok; | |
3de43e7b | 15307 | if (relocation + 0x8000 > 0xffff) |
a680de9a PB |
15308 | r = bfd_reloc_overflow; |
15309 | } | |
15310 | } | |
15311 | else | |
15312 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, contents, | |
15313 | rel->r_offset, relocation, addend); | |
5bd4f169 | 15314 | |
ef60b7ff | 15315 | if (r != bfd_reloc_ok) |
5bd4f169 | 15316 | { |
bc30df16 | 15317 | char *more_info = NULL; |
b80eed39 | 15318 | const char *reloc_name = howto->name; |
bc30df16 AM |
15319 | |
15320 | if (reloc_dest != DEST_NORMAL) | |
15321 | { | |
15322 | more_info = bfd_malloc (strlen (reloc_name) + 8); | |
15323 | if (more_info != NULL) | |
15324 | { | |
15325 | strcpy (more_info, reloc_name); | |
15326 | strcat (more_info, (reloc_dest == DEST_OPD | |
15327 | ? " (OPD)" : " (stub)")); | |
15328 | reloc_name = more_info; | |
15329 | } | |
15330 | } | |
15331 | ||
cd27b276 | 15332 | if (r == bfd_reloc_overflow) |
5bd4f169 | 15333 | { |
8131c122 AM |
15334 | /* On code like "if (foo) foo();" don't report overflow |
15335 | on a branch to zero when foo is undefined. */ | |
15336 | if (!warned | |
15337 | && (reloc_dest == DEST_STUB | |
15338 | || !(h != NULL | |
15339 | && (h->elf.root.type == bfd_link_hash_undefweak | |
15340 | || h->elf.root.type == bfd_link_hash_undefined) | |
15341 | && is_branch_reloc (r_type)))) | |
1a72702b AM |
15342 | info->callbacks->reloc_overflow (info, &h->elf.root, |
15343 | sym_name, reloc_name, | |
15344 | orig_rel.r_addend, | |
15345 | input_bfd, input_section, | |
15346 | rel->r_offset); | |
ef60b7ff AM |
15347 | } |
15348 | else | |
15349 | { | |
25f53a85 | 15350 | info->callbacks->einfo |
695344c0 | 15351 | /* xgettext:c-format */ |
c1c8c1ef | 15352 | (_("%H: %s against `%pT': error %d\n"), |
25f53a85 | 15353 | input_bfd, input_section, rel->r_offset, |
bc30df16 | 15354 | reloc_name, sym_name, (int) r); |
b34976b6 | 15355 | ret = FALSE; |
ef60b7ff | 15356 | } |
bc30df16 AM |
15357 | if (more_info != NULL) |
15358 | free (more_info); | |
5bd4f169 | 15359 | } |
c316a17c AM |
15360 | copy_reloc: |
15361 | if (wrel != rel) | |
15362 | *wrel = *rel; | |
15363 | } | |
15364 | ||
15365 | if (wrel != rel) | |
15366 | { | |
15367 | Elf_Internal_Shdr *rel_hdr; | |
15368 | size_t deleted = rel - wrel; | |
15369 | ||
15370 | rel_hdr = _bfd_elf_single_rel_hdr (input_section->output_section); | |
15371 | rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted; | |
15372 | if (rel_hdr->sh_size == 0) | |
15373 | { | |
15374 | /* It is too late to remove an empty reloc section. Leave | |
15375 | one NONE reloc. | |
15376 | ??? What is wrong with an empty section??? */ | |
15377 | rel_hdr->sh_size = rel_hdr->sh_entsize; | |
15378 | deleted -= 1; | |
15379 | } | |
15380 | rel_hdr = _bfd_elf_single_rel_hdr (input_section); | |
15381 | rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted; | |
15382 | input_section->reloc_count -= deleted; | |
5bd4f169 AM |
15383 | } |
15384 | ||
645ea6a9 AM |
15385 | /* If we're emitting relocations, then shortly after this function |
15386 | returns, reloc offsets and addends for this section will be | |
15387 | adjusted. Worse, reloc symbol indices will be for the output | |
8860955f AM |
15388 | file rather than the input. Save a copy of the relocs for |
15389 | opd_entry_value. */ | |
0e1862bb | 15390 | if (is_opd && (info->emitrelocations || bfd_link_relocatable (info))) |
8860955f AM |
15391 | { |
15392 | bfd_size_type amt; | |
15393 | amt = input_section->reloc_count * sizeof (Elf_Internal_Rela); | |
15394 | rel = bfd_alloc (input_bfd, amt); | |
729eabd5 AM |
15395 | BFD_ASSERT (ppc64_elf_tdata (input_bfd)->opd.relocs == NULL); |
15396 | ppc64_elf_tdata (input_bfd)->opd.relocs = rel; | |
8860955f AM |
15397 | if (rel == NULL) |
15398 | return FALSE; | |
15399 | memcpy (rel, relocs, amt); | |
15400 | } | |
5bd4f169 AM |
15401 | return ret; |
15402 | } | |
15403 | ||
754021d0 AM |
15404 | /* Adjust the value of any local symbols in opd sections. */ |
15405 | ||
6e0b88f1 | 15406 | static int |
754021d0 AM |
15407 | ppc64_elf_output_symbol_hook (struct bfd_link_info *info, |
15408 | const char *name ATTRIBUTE_UNUSED, | |
15409 | Elf_Internal_Sym *elfsym, | |
15410 | asection *input_sec, | |
15411 | struct elf_link_hash_entry *h) | |
15412 | { | |
74f0fb50 AM |
15413 | struct _opd_sec_data *opd; |
15414 | long adjust; | |
754021d0 AM |
15415 | bfd_vma value; |
15416 | ||
4025353c | 15417 | if (h != NULL) |
6e0b88f1 | 15418 | return 1; |
4025353c | 15419 | |
74f0fb50 AM |
15420 | opd = get_opd_info (input_sec); |
15421 | if (opd == NULL || opd->adjust == NULL) | |
6e0b88f1 | 15422 | return 1; |
754021d0 AM |
15423 | |
15424 | value = elfsym->st_value - input_sec->output_offset; | |
0e1862bb | 15425 | if (!bfd_link_relocatable (info)) |
754021d0 AM |
15426 | value -= input_sec->output_section->vma; |
15427 | ||
51aecdc5 | 15428 | adjust = opd->adjust[OPD_NDX (value)]; |
4025353c | 15429 | if (adjust == -1) |
6e0b88f1 AM |
15430 | return 2; |
15431 | ||
15432 | elfsym->st_value += adjust; | |
15433 | return 1; | |
754021d0 AM |
15434 | } |
15435 | ||
5bd4f169 AM |
15436 | /* Finish up dynamic symbol handling. We set the contents of various |
15437 | dynamic sections here. */ | |
15438 | ||
b34976b6 | 15439 | static bfd_boolean |
4ce794b7 AM |
15440 | ppc64_elf_finish_dynamic_symbol (bfd *output_bfd, |
15441 | struct bfd_link_info *info, | |
15442 | struct elf_link_hash_entry *h, | |
4aef7643 | 15443 | Elf_Internal_Sym *sym) |
5bd4f169 | 15444 | { |
65f38f15 | 15445 | struct ppc_link_hash_table *htab; |
8387904d AM |
15446 | struct plt_entry *ent; |
15447 | Elf_Internal_Rela rela; | |
15448 | bfd_byte *loc; | |
5bd4f169 | 15449 | |
65f38f15 | 15450 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
15451 | if (htab == NULL) |
15452 | return FALSE; | |
5bd4f169 | 15453 | |
8387904d AM |
15454 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) |
15455 | if (ent->plt.offset != (bfd_vma) -1) | |
15456 | { | |
15457 | /* This symbol has an entry in the procedure linkage | |
15458 | table. Set it up. */ | |
e054468f AM |
15459 | if (!htab->elf.dynamic_sections_created |
15460 | || h->dynindx == -1) | |
15461 | { | |
15462 | BFD_ASSERT (h->type == STT_GNU_IFUNC | |
15463 | && h->def_regular | |
15464 | && (h->root.type == bfd_link_hash_defined | |
15465 | || h->root.type == bfd_link_hash_defweak)); | |
33e44f2e AM |
15466 | rela.r_offset = (htab->elf.iplt->output_section->vma |
15467 | + htab->elf.iplt->output_offset | |
25f23106 | 15468 | + ent->plt.offset); |
ee67d69a AM |
15469 | if (htab->opd_abi) |
15470 | rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL); | |
15471 | else | |
15472 | rela.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE); | |
e054468f AM |
15473 | rela.r_addend = (h->root.u.def.value |
15474 | + h->root.u.def.section->output_offset | |
15475 | + h->root.u.def.section->output_section->vma | |
15476 | + ent->addend); | |
33e44f2e AM |
15477 | loc = (htab->elf.irelplt->contents |
15478 | + (htab->elf.irelplt->reloc_count++ | |
25f23106 | 15479 | * sizeof (Elf64_External_Rela))); |
82e66161 | 15480 | htab->local_ifunc_resolver = 1; |
e054468f AM |
15481 | } |
15482 | else | |
15483 | { | |
33e44f2e AM |
15484 | rela.r_offset = (htab->elf.splt->output_section->vma |
15485 | + htab->elf.splt->output_offset | |
25f23106 | 15486 | + ent->plt.offset); |
e054468f AM |
15487 | rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT); |
15488 | rela.r_addend = ent->addend; | |
33e44f2e | 15489 | loc = (htab->elf.srelplt->contents |
b9e5796b AM |
15490 | + ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE (htab)) |
15491 | / PLT_ENTRY_SIZE (htab) * sizeof (Elf64_External_Rela))); | |
82e66161 AM |
15492 | if (h->type == STT_GNU_IFUNC && is_static_defined (h)) |
15493 | htab->maybe_local_ifunc_resolver = 1; | |
e054468f | 15494 | } |
8387904d | 15495 | bfd_elf64_swap_reloca_out (output_bfd, &rela, loc); |
a345bc8d AM |
15496 | |
15497 | if (!htab->opd_abi) | |
15498 | { | |
15499 | if (!h->def_regular) | |
15500 | { | |
15501 | /* Mark the symbol as undefined, rather than as | |
15502 | defined in glink. Leave the value if there were | |
15503 | any relocations where pointer equality matters | |
15504 | (this is a clue for the dynamic linker, to make | |
15505 | function pointer comparisons work between an | |
15506 | application and shared library), otherwise set it | |
15507 | to zero. */ | |
15508 | sym->st_shndx = SHN_UNDEF; | |
15509 | if (!h->pointer_equality_needed) | |
15510 | sym->st_value = 0; | |
15511 | else if (!h->ref_regular_nonweak) | |
15512 | { | |
15513 | /* This breaks function pointer comparisons, but | |
15514 | that is better than breaking tests for a NULL | |
15515 | function pointer. */ | |
15516 | sym->st_value = 0; | |
15517 | } | |
15518 | } | |
15519 | } | |
8387904d | 15520 | } |
5bd4f169 | 15521 | |
f5385ebf | 15522 | if (h->needs_copy) |
5bd4f169 | 15523 | { |
65f38f15 | 15524 | /* This symbol needs a copy reloc. Set it up. */ |
5474d94f | 15525 | asection *srel; |
5bd4f169 | 15526 | |
65f38f15 AM |
15527 | if (h->dynindx == -1 |
15528 | || (h->root.type != bfd_link_hash_defined | |
15529 | && h->root.type != bfd_link_hash_defweak) | |
5474d94f AM |
15530 | || htab->elf.srelbss == NULL |
15531 | || htab->elf.sreldynrelro == NULL) | |
65f38f15 | 15532 | abort (); |
5bd4f169 AM |
15533 | |
15534 | rela.r_offset = (h->root.u.def.value | |
15535 | + h->root.u.def.section->output_section->vma | |
15536 | + h->root.u.def.section->output_offset); | |
15537 | rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY); | |
15538 | rela.r_addend = 0; | |
afbf7e8e | 15539 | if (h->root.u.def.section == htab->elf.sdynrelro) |
5474d94f AM |
15540 | srel = htab->elf.sreldynrelro; |
15541 | else | |
15542 | srel = htab->elf.srelbss; | |
15543 | loc = srel->contents; | |
15544 | loc += srel->reloc_count++ * sizeof (Elf64_External_Rela); | |
65f38f15 | 15545 | bfd_elf64_swap_reloca_out (output_bfd, &rela, loc); |
5bd4f169 AM |
15546 | } |
15547 | ||
b34976b6 | 15548 | return TRUE; |
5bd4f169 AM |
15549 | } |
15550 | ||
65f38f15 AM |
15551 | /* Used to decide how to sort relocs in an optimal manner for the |
15552 | dynamic linker, before writing them out. */ | |
15553 | ||
15554 | static enum elf_reloc_type_class | |
7e612e98 AM |
15555 | ppc64_elf_reloc_type_class (const struct bfd_link_info *info, |
15556 | const asection *rel_sec, | |
15557 | const Elf_Internal_Rela *rela) | |
65f38f15 | 15558 | { |
04c9666a | 15559 | enum elf_ppc64_reloc_type r_type; |
7e612e98 AM |
15560 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
15561 | ||
33e44f2e | 15562 | if (rel_sec == htab->elf.irelplt) |
7e612e98 | 15563 | return reloc_class_ifunc; |
a33d1f77 | 15564 | |
4ce794b7 | 15565 | r_type = ELF64_R_TYPE (rela->r_info); |
a33d1f77 | 15566 | switch (r_type) |
65f38f15 AM |
15567 | { |
15568 | case R_PPC64_RELATIVE: | |
15569 | return reloc_class_relative; | |
15570 | case R_PPC64_JMP_SLOT: | |
15571 | return reloc_class_plt; | |
15572 | case R_PPC64_COPY: | |
15573 | return reloc_class_copy; | |
15574 | default: | |
15575 | return reloc_class_normal; | |
15576 | } | |
15577 | } | |
15578 | ||
5bd4f169 AM |
15579 | /* Finish up the dynamic sections. */ |
15580 | ||
b34976b6 | 15581 | static bfd_boolean |
4ce794b7 AM |
15582 | ppc64_elf_finish_dynamic_sections (bfd *output_bfd, |
15583 | struct bfd_link_info *info) | |
5bd4f169 | 15584 | { |
65f38f15 AM |
15585 | struct ppc_link_hash_table *htab; |
15586 | bfd *dynobj; | |
5bd4f169 | 15587 | asection *sdyn; |
5bd4f169 | 15588 | |
65f38f15 | 15589 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
15590 | if (htab == NULL) |
15591 | return FALSE; | |
15592 | ||
65f38f15 | 15593 | dynobj = htab->elf.dynobj; |
3d4d4302 | 15594 | sdyn = bfd_get_linker_section (dynobj, ".dynamic"); |
5bd4f169 | 15595 | |
65f38f15 | 15596 | if (htab->elf.dynamic_sections_created) |
5bd4f169 | 15597 | { |
5bd4f169 AM |
15598 | Elf64_External_Dyn *dyncon, *dynconend; |
15599 | ||
33e44f2e | 15600 | if (sdyn == NULL || htab->elf.sgot == NULL) |
65f38f15 | 15601 | abort (); |
5bd4f169 AM |
15602 | |
15603 | dyncon = (Elf64_External_Dyn *) sdyn->contents; | |
eea6121a | 15604 | dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size); |
5bd4f169 AM |
15605 | for (; dyncon < dynconend; dyncon++) |
15606 | { | |
15607 | Elf_Internal_Dyn dyn; | |
19397422 | 15608 | asection *s; |
5bd4f169 AM |
15609 | |
15610 | bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn); | |
15611 | ||
15612 | switch (dyn.d_tag) | |
15613 | { | |
65f38f15 AM |
15614 | default: |
15615 | continue; | |
5bd4f169 | 15616 | |
5d1634d7 | 15617 | case DT_PPC64_GLINK: |
4ce794b7 | 15618 | s = htab->glink; |
6348e046 | 15619 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
ad8e1ba5 AM |
15620 | /* We stupidly defined DT_PPC64_GLINK to be the start |
15621 | of glink rather than the first entry point, which is | |
15622 | what ld.so needs, and now have a bigger stub to | |
15623 | support automatic multiple TOCs. */ | |
9e390558 | 15624 | dyn.d_un.d_ptr += GLINK_PLTRESOLVE_SIZE (htab) - 8 * 4; |
5d1634d7 AM |
15625 | break; |
15626 | ||
19397422 AM |
15627 | case DT_PPC64_OPD: |
15628 | s = bfd_get_section_by_name (output_bfd, ".opd"); | |
6348e046 AM |
15629 | if (s == NULL) |
15630 | continue; | |
15631 | dyn.d_un.d_ptr = s->vma; | |
19397422 AM |
15632 | break; |
15633 | ||
e8910a83 AM |
15634 | case DT_PPC64_OPT: |
15635 | if (htab->do_multi_toc && htab->multi_toc_needed) | |
15636 | dyn.d_un.d_val |= PPC64_OPT_MULTI_TOC; | |
f378ab09 AM |
15637 | if (htab->has_plt_localentry0) |
15638 | dyn.d_un.d_val |= PPC64_OPT_LOCALENTRY; | |
e8910a83 AM |
15639 | break; |
15640 | ||
19397422 AM |
15641 | case DT_PPC64_OPDSZ: |
15642 | s = bfd_get_section_by_name (output_bfd, ".opd"); | |
6348e046 AM |
15643 | if (s == NULL) |
15644 | continue; | |
eea6121a | 15645 | dyn.d_un.d_val = s->size; |
19397422 AM |
15646 | break; |
15647 | ||
65f38f15 | 15648 | case DT_PLTGOT: |
33e44f2e | 15649 | s = htab->elf.splt; |
6348e046 | 15650 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
65f38f15 AM |
15651 | break; |
15652 | ||
15653 | case DT_JMPREL: | |
33e44f2e | 15654 | s = htab->elf.srelplt; |
6348e046 | 15655 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
65f38f15 | 15656 | break; |
5bd4f169 | 15657 | |
65f38f15 | 15658 | case DT_PLTRELSZ: |
33e44f2e | 15659 | dyn.d_un.d_val = htab->elf.srelplt->size; |
5d1634d7 | 15660 | break; |
82e66161 AM |
15661 | |
15662 | case DT_TEXTREL: | |
15663 | if (htab->local_ifunc_resolver) | |
15664 | info->callbacks->einfo | |
15665 | (_("%X%P: text relocations and GNU indirect " | |
15666 | "functions will result in a segfault at runtime\n")); | |
15667 | else if (htab->maybe_local_ifunc_resolver) | |
15668 | info->callbacks->einfo | |
15669 | (_("%P: warning: text relocations and GNU indirect " | |
15670 | "functions may result in a segfault at runtime\n")); | |
15671 | continue; | |
5bd4f169 | 15672 | } |
5bd4f169 | 15673 | |
65f38f15 | 15674 | bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); |
5bd4f169 | 15675 | } |
5bd4f169 AM |
15676 | } |
15677 | ||
6528b6eb AM |
15678 | if (htab->elf.sgot != NULL && htab->elf.sgot->size != 0 |
15679 | && htab->elf.sgot->output_section != bfd_abs_section_ptr) | |
5d1634d7 AM |
15680 | { |
15681 | /* Fill in the first entry in the global offset table. | |
15682 | We use it to hold the link-time TOCbase. */ | |
15683 | bfd_put_64 (output_bfd, | |
60ee0d4a | 15684 | elf_gp (output_bfd) + TOC_BASE_OFF, |
33e44f2e | 15685 | htab->elf.sgot->contents); |
5d1634d7 AM |
15686 | |
15687 | /* Set .got entry size. */ | |
33e44f2e | 15688 | elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize = 8; |
5d1634d7 AM |
15689 | } |
15690 | ||
6528b6eb AM |
15691 | if (htab->elf.splt != NULL && htab->elf.splt->size != 0 |
15692 | && htab->elf.splt->output_section != bfd_abs_section_ptr) | |
5d1634d7 AM |
15693 | { |
15694 | /* Set .plt entry size. */ | |
33e44f2e | 15695 | elf_section_data (htab->elf.splt->output_section)->this_hdr.sh_entsize |
b9e5796b | 15696 | = PLT_ENTRY_SIZE (htab); |
5d1634d7 AM |
15697 | } |
15698 | ||
84f5d08e AM |
15699 | /* brlt is SEC_LINKER_CREATED, so we need to write out relocs for |
15700 | brlt ourselves if emitrelocations. */ | |
15701 | if (htab->brlt != NULL | |
15702 | && htab->brlt->reloc_count != 0 | |
15703 | && !_bfd_elf_link_output_relocs (output_bfd, | |
15704 | htab->brlt, | |
d4730f92 | 15705 | elf_section_data (htab->brlt)->rela.hdr, |
84f5d08e AM |
15706 | elf_section_data (htab->brlt)->relocs, |
15707 | NULL)) | |
15708 | return FALSE; | |
15709 | ||
176a0d42 AM |
15710 | if (htab->glink != NULL |
15711 | && htab->glink->reloc_count != 0 | |
15712 | && !_bfd_elf_link_output_relocs (output_bfd, | |
15713 | htab->glink, | |
d4730f92 | 15714 | elf_section_data (htab->glink)->rela.hdr, |
176a0d42 AM |
15715 | elf_section_data (htab->glink)->relocs, |
15716 | NULL)) | |
15717 | return FALSE; | |
15718 | ||
58d180e8 | 15719 | if (htab->glink_eh_frame != NULL |
da44f4e5 AM |
15720 | && htab->glink_eh_frame->size != 0) |
15721 | { | |
15722 | bfd_vma val; | |
15723 | bfd_byte *p; | |
d4aaa2a0 | 15724 | struct map_stub *group; |
2e0ce1c8 | 15725 | size_t align = 4; |
da44f4e5 | 15726 | |
2e0ce1c8 AM |
15727 | p = htab->glink_eh_frame->contents; |
15728 | p += (sizeof (glink_eh_frame_cie) + align - 1) & -align; | |
d4aaa2a0 AM |
15729 | |
15730 | for (group = htab->group; group != NULL; group = group->next) | |
15731 | if (group->stub_sec != NULL) | |
da44f4e5 | 15732 | { |
da44f4e5 | 15733 | /* Offset to stub section. */ |
d4aaa2a0 AM |
15734 | val = (group->stub_sec->output_section->vma |
15735 | + group->stub_sec->output_offset); | |
da44f4e5 AM |
15736 | val -= (htab->glink_eh_frame->output_section->vma |
15737 | + htab->glink_eh_frame->output_offset | |
d4aaa2a0 | 15738 | + (p + 8 - htab->glink_eh_frame->contents)); |
da44f4e5 AM |
15739 | if (val + 0x80000000 > 0xffffffff) |
15740 | { | |
cf97bcb0 AM |
15741 | _bfd_error_handler |
15742 | (_("%s offset too large for .eh_frame sdata4 encoding"), | |
d4aaa2a0 | 15743 | group->stub_sec->name); |
da44f4e5 AM |
15744 | return FALSE; |
15745 | } | |
d4aaa2a0 AM |
15746 | bfd_put_32 (dynobj, val, p + 8); |
15747 | p += stub_eh_frame_size (group, align); | |
da44f4e5 AM |
15748 | } |
15749 | if (htab->glink != NULL && htab->glink->size != 0) | |
15750 | { | |
da44f4e5 AM |
15751 | /* Offset to .glink. */ |
15752 | val = (htab->glink->output_section->vma | |
15753 | + htab->glink->output_offset | |
15754 | + 8); | |
15755 | val -= (htab->glink_eh_frame->output_section->vma | |
15756 | + htab->glink_eh_frame->output_offset | |
d4aaa2a0 | 15757 | + (p + 8 - htab->glink_eh_frame->contents)); |
da44f4e5 AM |
15758 | if (val + 0x80000000 > 0xffffffff) |
15759 | { | |
cf97bcb0 AM |
15760 | _bfd_error_handler |
15761 | (_("%s offset too large for .eh_frame sdata4 encoding"), | |
da44f4e5 AM |
15762 | htab->glink->name); |
15763 | return FALSE; | |
15764 | } | |
d4aaa2a0 AM |
15765 | bfd_put_32 (dynobj, val, p + 8); |
15766 | p += (24 + align - 1) & -align; | |
da44f4e5 AM |
15767 | } |
15768 | ||
15769 | if (htab->glink_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME | |
15770 | && !_bfd_elf_write_section_eh_frame (output_bfd, info, | |
15771 | htab->glink_eh_frame, | |
15772 | htab->glink_eh_frame->contents)) | |
15773 | return FALSE; | |
15774 | } | |
58d180e8 | 15775 | |
e717da7e | 15776 | /* We need to handle writing out multiple GOT sections ourselves, |
7b53ace3 AM |
15777 | since we didn't add them to DYNOBJ. We know dynobj is the first |
15778 | bfd. */ | |
c72f2fb2 | 15779 | while ((dynobj = dynobj->link.next) != NULL) |
e717da7e AM |
15780 | { |
15781 | asection *s; | |
7b53ace3 | 15782 | |
0c8d6e5c | 15783 | if (!is_ppc64_elf (dynobj)) |
7b53ace3 AM |
15784 | continue; |
15785 | ||
e717da7e AM |
15786 | s = ppc64_elf_tdata (dynobj)->got; |
15787 | if (s != NULL | |
eea6121a | 15788 | && s->size != 0 |
e717da7e AM |
15789 | && s->output_section != bfd_abs_section_ptr |
15790 | && !bfd_set_section_contents (output_bfd, s->output_section, | |
15791 | s->contents, s->output_offset, | |
eea6121a | 15792 | s->size)) |
e717da7e AM |
15793 | return FALSE; |
15794 | s = ppc64_elf_tdata (dynobj)->relgot; | |
15795 | if (s != NULL | |
eea6121a | 15796 | && s->size != 0 |
e717da7e AM |
15797 | && s->output_section != bfd_abs_section_ptr |
15798 | && !bfd_set_section_contents (output_bfd, s->output_section, | |
15799 | s->contents, s->output_offset, | |
eea6121a | 15800 | s->size)) |
e717da7e AM |
15801 | return FALSE; |
15802 | } | |
f6c52c13 | 15803 | |
b34976b6 | 15804 | return TRUE; |
5bd4f169 AM |
15805 | } |
15806 | ||
5bd4f169 | 15807 | #include "elf64-target.h" |
7b8e7dad AM |
15808 | |
15809 | /* FreeBSD support */ | |
15810 | ||
15811 | #undef TARGET_LITTLE_SYM | |
15812 | #undef TARGET_LITTLE_NAME | |
15813 | ||
15814 | #undef TARGET_BIG_SYM | |
6d00b590 | 15815 | #define TARGET_BIG_SYM powerpc_elf64_fbsd_vec |
7b8e7dad AM |
15816 | #undef TARGET_BIG_NAME |
15817 | #define TARGET_BIG_NAME "elf64-powerpc-freebsd" | |
15818 | ||
15819 | #undef ELF_OSABI | |
15820 | #define ELF_OSABI ELFOSABI_FREEBSD | |
15821 | ||
15822 | #undef elf64_bed | |
15823 | #define elf64_bed elf64_powerpc_fbsd_bed | |
15824 | ||
15825 | #include "elf64-target.h" |