Commit | Line | Data |
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5bd4f169 | 1 | /* PowerPC64-specific support for 64-bit ELF. |
6f2750fe | 2 | Copyright (C) 1999-2016 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 |
ad8e1ba5 AM |
75 | #define elf_backend_can_gc_sections 1 |
76 | #define elf_backend_can_refcount 1 | |
77 | #define elf_backend_rela_normal 1 | |
64f52338 | 78 | #define elf_backend_dtrel_excludes_plt 1 |
6bfdb61b | 79 | #define elf_backend_default_execstack 0 |
ad8e1ba5 | 80 | |
e717da7e | 81 | #define bfd_elf64_mkobject ppc64_elf_mkobject |
ad8e1ba5 | 82 | #define bfd_elf64_bfd_reloc_type_lookup ppc64_elf_reloc_type_lookup |
aa374f67 | 83 | #define bfd_elf64_bfd_reloc_name_lookup ppc64_elf_reloc_name_lookup |
ee67d69a AM |
84 | #define bfd_elf64_bfd_merge_private_bfd_data ppc64_elf_merge_private_bfd_data |
85 | #define bfd_elf64_bfd_print_private_bfd_data ppc64_elf_print_private_bfd_data | |
ad8e1ba5 AM |
86 | #define bfd_elf64_new_section_hook ppc64_elf_new_section_hook |
87 | #define bfd_elf64_bfd_link_hash_table_create ppc64_elf_link_hash_table_create | |
90e3cdf2 | 88 | #define bfd_elf64_get_synthetic_symtab ppc64_elf_get_synthetic_symtab |
aa374f67 | 89 | #define bfd_elf64_bfd_link_just_syms ppc64_elf_link_just_syms |
ad8e1ba5 AM |
90 | |
91 | #define elf_backend_object_p ppc64_elf_object_p | |
d37c89e5 AM |
92 | #define elf_backend_grok_prstatus ppc64_elf_grok_prstatus |
93 | #define elf_backend_grok_psinfo ppc64_elf_grok_psinfo | |
183e98be | 94 | #define elf_backend_write_core_note ppc64_elf_write_core_note |
ad8e1ba5 AM |
95 | #define elf_backend_create_dynamic_sections ppc64_elf_create_dynamic_sections |
96 | #define elf_backend_copy_indirect_symbol ppc64_elf_copy_indirect_symbol | |
555cd476 | 97 | #define elf_backend_add_symbol_hook ppc64_elf_add_symbol_hook |
f6c7c3e8 | 98 | #define elf_backend_check_directives ppc64_elf_before_check_relocs |
e5034e59 | 99 | #define elf_backend_notice_as_needed ppc64_elf_notice_as_needed |
8387904d | 100 | #define elf_backend_archive_symbol_lookup ppc64_elf_archive_symbol_lookup |
ad8e1ba5 | 101 | #define elf_backend_check_relocs ppc64_elf_check_relocs |
74f0fb50 | 102 | #define elf_backend_gc_keep ppc64_elf_gc_keep |
64d03ab5 | 103 | #define elf_backend_gc_mark_dynamic_ref ppc64_elf_gc_mark_dynamic_ref |
ad8e1ba5 AM |
104 | #define elf_backend_gc_mark_hook ppc64_elf_gc_mark_hook |
105 | #define elf_backend_gc_sweep_hook ppc64_elf_gc_sweep_hook | |
106 | #define elf_backend_adjust_dynamic_symbol ppc64_elf_adjust_dynamic_symbol | |
107 | #define elf_backend_hide_symbol ppc64_elf_hide_symbol | |
9f296da3 | 108 | #define elf_backend_maybe_function_sym ppc64_elf_maybe_function_sym |
ad8e1ba5 AM |
109 | #define elf_backend_always_size_sections ppc64_elf_func_desc_adjust |
110 | #define elf_backend_size_dynamic_sections ppc64_elf_size_dynamic_sections | |
a345bc8d | 111 | #define elf_backend_hash_symbol ppc64_elf_hash_symbol |
74541ad4 | 112 | #define elf_backend_init_index_section _bfd_elf_init_2_index_sections |
60124e18 | 113 | #define elf_backend_action_discarded ppc64_elf_action_discarded |
ad8e1ba5 AM |
114 | #define elf_backend_relocate_section ppc64_elf_relocate_section |
115 | #define elf_backend_finish_dynamic_symbol ppc64_elf_finish_dynamic_symbol | |
116 | #define elf_backend_reloc_type_class ppc64_elf_reloc_type_class | |
117 | #define elf_backend_finish_dynamic_sections ppc64_elf_finish_dynamic_sections | |
754021d0 | 118 | #define elf_backend_link_output_symbol_hook ppc64_elf_output_symbol_hook |
29ef7005 | 119 | #define elf_backend_special_sections ppc64_elf_special_sections |
6911b7dc | 120 | #define elf_backend_merge_symbol_attribute ppc64_elf_merge_symbol_attribute |
ad8e1ba5 | 121 | |
5bd4f169 AM |
122 | /* The name of the dynamic interpreter. This is put in the .interp |
123 | section. */ | |
124 | #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1" | |
125 | ||
126 | /* The size in bytes of an entry in the procedure linkage table. */ | |
b9e5796b | 127 | #define PLT_ENTRY_SIZE(htab) (htab->opd_abi ? 24 : 8) |
5bd4f169 AM |
128 | |
129 | /* The initial size of the plt reserved for the dynamic linker. */ | |
b9e5796b | 130 | #define PLT_INITIAL_ENTRY_SIZE(htab) (htab->opd_abi ? 24 : 16) |
5bd4f169 | 131 | |
a078d95a AM |
132 | /* Offsets to some stack save slots. */ |
133 | #define STK_LR 16 | |
134 | #define STK_TOC(htab) (htab->opd_abi ? 40 : 24) | |
eb8d7fda | 135 | /* This one is dodgy. ELFv2 does not have a linker word, so use the |
a078d95a AM |
136 | CR save slot. Used only by optimised __tls_get_addr call stub, |
137 | relying on __tls_get_addr_opt not saving CR.. */ | |
138 | #define STK_LINKER(htab) (htab->opd_abi ? 32 : 8) | |
139 | ||
5bd4f169 | 140 | /* TOC base pointers offset from start of TOC. */ |
411e1bfb | 141 | #define TOC_BASE_OFF 0x8000 |
a27e685f AM |
142 | /* TOC base alignment. */ |
143 | #define TOC_BASE_ALIGN 256 | |
411e1bfb AM |
144 | |
145 | /* Offset of tp and dtp pointers from start of TLS block. */ | |
146 | #define TP_OFFSET 0x7000 | |
147 | #define DTP_OFFSET 0x8000 | |
5bd4f169 | 148 | |
ad8e1ba5 AM |
149 | /* .plt call stub instructions. The normal stub is like this, but |
150 | sometimes the .plt entry crosses a 64k boundary and we need to | |
71a39c98 | 151 | insert an addi to adjust r11. */ |
a078d95a | 152 | #define STD_R2_0R1 0xf8410000 /* std %r2,0+40(%r1) */ |
71a39c98 AM |
153 | #define ADDIS_R11_R2 0x3d620000 /* addis %r11,%r2,xxx@ha */ |
154 | #define LD_R12_0R11 0xe98b0000 /* ld %r12,xxx+0@l(%r11) */ | |
155 | #define MTCTR_R12 0x7d8903a6 /* mtctr %r12 */ | |
156 | #define LD_R2_0R11 0xe84b0000 /* ld %r2,xxx+8@l(%r11) */ | |
157 | #define LD_R11_0R11 0xe96b0000 /* ld %r11,xxx+16@l(%r11) */ | |
5d1634d7 AM |
158 | #define BCTR 0x4e800420 /* bctr */ |
159 | ||
71a39c98 | 160 | #define ADDI_R11_R11 0x396b0000 /* addi %r11,%r11,off@l */ |
ad8e1ba5 AM |
161 | #define ADDIS_R2_R2 0x3c420000 /* addis %r2,%r2,off@ha */ |
162 | #define ADDI_R2_R2 0x38420000 /* addi %r2,%r2,off@l */ | |
163 | ||
71a39c98 AM |
164 | #define XOR_R2_R12_R12 0x7d826278 /* xor %r2,%r12,%r12 */ |
165 | #define ADD_R11_R11_R2 0x7d6b1214 /* add %r11,%r11,%r2 */ | |
166 | #define XOR_R11_R12_R12 0x7d8b6278 /* xor %r11,%r12,%r12 */ | |
794e51c0 AM |
167 | #define ADD_R2_R2_R11 0x7c425a14 /* add %r2,%r2,%r11 */ |
168 | #define CMPLDI_R2_0 0x28220000 /* cmpldi %r2,0 */ | |
169 | #define BNECTR 0x4ca20420 /* bnectr+ */ | |
170 | #define BNECTR_P4 0x4ce20420 /* bnectr+ */ | |
171 | ||
71a39c98 | 172 | #define LD_R12_0R2 0xe9820000 /* ld %r12,xxx+0(%r2) */ |
ac2df442 AM |
173 | #define LD_R11_0R2 0xe9620000 /* ld %r11,xxx+0(%r2) */ |
174 | #define LD_R2_0R2 0xe8420000 /* ld %r2,xxx+0(%r2) */ | |
175 | ||
a078d95a | 176 | #define LD_R2_0R1 0xe8410000 /* ld %r2,0(%r1) */ |
006589cf AM |
177 | #define LD_R2_0R12 0xe84c0000 /* ld %r2,0(%r12) */ |
178 | #define ADD_R2_R2_R12 0x7c426214 /* add %r2,%r2,%r12 */ | |
ad8e1ba5 | 179 | |
006589cf AM |
180 | #define LIS_R2 0x3c400000 /* lis %r2,xxx@ha */ |
181 | #define ADDIS_R2_R12 0x3c4c0000 /* addis %r2,%r12,xxx@ha */ | |
182 | #define ADDIS_R12_R2 0x3d820000 /* addis %r12,%r2,xxx@ha */ | |
a345bc8d AM |
183 | #define ADDIS_R12_R12 0x3d8c0000 /* addis %r12,%r12,xxx@ha */ |
184 | #define LD_R12_0R12 0xe98c0000 /* ld %r12,xxx@l(%r12) */ | |
185 | ||
ee4bf8d2 | 186 | /* glink call stub instructions. We enter with the index in R0. */ |
ad8e1ba5 | 187 | #define GLINK_CALL_STUB_SIZE (16*4) |
ee4bf8d2 AM |
188 | /* 0: */ |
189 | /* .quad plt0-1f */ | |
190 | /* __glink: */ | |
191 | #define MFLR_R12 0x7d8802a6 /* mflr %12 */ | |
192 | #define BCL_20_31 0x429f0005 /* bcl 20,31,1f */ | |
193 | /* 1: */ | |
194 | #define MFLR_R11 0x7d6802a6 /* mflr %11 */ | |
71a39c98 | 195 | /* ld %2,(0b-1b)(%11) */ |
ee4bf8d2 | 196 | #define MTLR_R12 0x7d8803a6 /* mtlr %12 */ |
71a39c98 AM |
197 | #define ADD_R11_R2_R11 0x7d625a14 /* add %11,%2,%11 */ |
198 | /* ld %12,0(%11) */ | |
199 | /* ld %2,8(%11) */ | |
200 | /* mtctr %12 */ | |
201 | /* ld %11,16(%11) */ | |
ee4bf8d2 | 202 | /* bctr */ |
b9e5796b AM |
203 | #define MFLR_R0 0x7c0802a6 /* mflr %r0 */ |
204 | #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */ | |
205 | #define SUB_R12_R12_R11 0x7d8b6050 /* subf %r12,%r11,%r12 */ | |
206 | #define ADDI_R0_R12 0x380c0000 /* addi %r0,%r12,0 */ | |
207 | #define SRDI_R0_R0_2 0x7800f082 /* rldicl %r0,%r0,62,2 */ | |
5d1634d7 AM |
208 | |
209 | /* Pad with this. */ | |
210 | #define NOP 0x60000000 | |
211 | ||
721956f4 AM |
212 | /* Some other nops. */ |
213 | #define CROR_151515 0x4def7b82 | |
214 | #define CROR_313131 0x4ffffb82 | |
215 | ||
cedb70c5 | 216 | /* .glink entries for the first 32k functions are two instructions. */ |
5d1634d7 AM |
217 | #define LI_R0_0 0x38000000 /* li %r0,0 */ |
218 | #define B_DOT 0x48000000 /* b . */ | |
219 | ||
220 | /* After that, we need two instructions to load the index, followed by | |
221 | a branch. */ | |
222 | #define LIS_R0_0 0x3c000000 /* lis %r0,0 */ | |
10ed1bba | 223 | #define ORI_R0_R0_0 0x60000000 /* ori %r0,%r0,0 */ |
41bd81ab | 224 | |
deb0e272 AM |
225 | /* Instructions used by the save and restore reg functions. */ |
226 | #define STD_R0_0R1 0xf8010000 /* std %r0,0(%r1) */ | |
227 | #define STD_R0_0R12 0xf80c0000 /* std %r0,0(%r12) */ | |
228 | #define LD_R0_0R1 0xe8010000 /* ld %r0,0(%r1) */ | |
229 | #define LD_R0_0R12 0xe80c0000 /* ld %r0,0(%r12) */ | |
82bd7b59 AM |
230 | #define STFD_FR0_0R1 0xd8010000 /* stfd %fr0,0(%r1) */ |
231 | #define LFD_FR0_0R1 0xc8010000 /* lfd %fr0,0(%r1) */ | |
deb0e272 AM |
232 | #define LI_R12_0 0x39800000 /* li %r12,0 */ |
233 | #define STVX_VR0_R12_R0 0x7c0c01ce /* stvx %v0,%r12,%r0 */ | |
234 | #define LVX_VR0_R12_R0 0x7c0c00ce /* lvx %v0,%r12,%r0 */ | |
235 | #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */ | |
82bd7b59 AM |
236 | #define BLR 0x4e800020 /* blr */ |
237 | ||
41bd81ab AM |
238 | /* Since .opd is an array of descriptors and each entry will end up |
239 | with identical R_PPC64_RELATIVE relocs, there is really no need to | |
240 | propagate .opd relocs; The dynamic linker should be taught to | |
1e2f5b6e | 241 | relocate .opd without reloc entries. */ |
41bd81ab AM |
242 | #ifndef NO_OPD_RELOCS |
243 | #define NO_OPD_RELOCS 0 | |
244 | #endif | |
810d4e75 | 245 | |
a4b6fadd AM |
246 | #ifndef ARRAY_SIZE |
247 | #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0])) | |
248 | #endif | |
249 | ||
810d4e75 AM |
250 | static inline int |
251 | abiversion (bfd *abfd) | |
252 | { | |
253 | return elf_elfheader (abfd)->e_flags & EF_PPC64_ABI; | |
254 | } | |
255 | ||
256 | static inline void | |
257 | set_abiversion (bfd *abfd, int ver) | |
258 | { | |
259 | elf_elfheader (abfd)->e_flags &= ~EF_PPC64_ABI; | |
260 | elf_elfheader (abfd)->e_flags |= ver & EF_PPC64_ABI; | |
261 | } | |
5bd4f169 | 262 | \f |
f5e87a1d | 263 | #define ONES(n) (((bfd_vma) 1 << ((n) - 1) << 1) - 1) |
b34976b6 | 264 | |
5bd4f169 | 265 | /* Relocation HOWTO's. */ |
04c9666a | 266 | static reloc_howto_type *ppc64_elf_howto_table[(int) R_PPC64_max]; |
5bd4f169 AM |
267 | |
268 | static reloc_howto_type ppc64_elf_howto_raw[] = { | |
269 | /* This reloc does nothing. */ | |
270 | HOWTO (R_PPC64_NONE, /* type */ | |
271 | 0, /* rightshift */ | |
6346d5ca AM |
272 | 3, /* size (0 = byte, 1 = short, 2 = long) */ |
273 | 0, /* bitsize */ | |
b34976b6 | 274 | FALSE, /* pc_relative */ |
5bd4f169 | 275 | 0, /* bitpos */ |
f5e87a1d | 276 | complain_overflow_dont, /* complain_on_overflow */ |
5bd4f169 AM |
277 | bfd_elf_generic_reloc, /* special_function */ |
278 | "R_PPC64_NONE", /* name */ | |
b34976b6 | 279 | FALSE, /* partial_inplace */ |
d006db6c | 280 | 0, /* src_mask */ |
5bd4f169 | 281 | 0, /* dst_mask */ |
b34976b6 | 282 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
283 | |
284 | /* A standard 32 bit relocation. */ | |
285 | HOWTO (R_PPC64_ADDR32, /* type */ | |
286 | 0, /* rightshift */ | |
287 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
288 | 32, /* bitsize */ | |
b34976b6 | 289 | FALSE, /* pc_relative */ |
5bd4f169 AM |
290 | 0, /* bitpos */ |
291 | complain_overflow_bitfield, /* complain_on_overflow */ | |
292 | bfd_elf_generic_reloc, /* special_function */ | |
293 | "R_PPC64_ADDR32", /* name */ | |
b34976b6 | 294 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
295 | 0, /* src_mask */ |
296 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 297 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
298 | |
299 | /* An absolute 26 bit branch; the lower two bits must be zero. | |
300 | FIXME: we don't check that, we just clear them. */ | |
301 | HOWTO (R_PPC64_ADDR24, /* type */ | |
302 | 0, /* rightshift */ | |
303 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
304 | 26, /* bitsize */ | |
b34976b6 | 305 | FALSE, /* pc_relative */ |
5bd4f169 AM |
306 | 0, /* bitpos */ |
307 | complain_overflow_bitfield, /* complain_on_overflow */ | |
308 | bfd_elf_generic_reloc, /* special_function */ | |
309 | "R_PPC64_ADDR24", /* name */ | |
b34976b6 | 310 | FALSE, /* partial_inplace */ |
d006db6c | 311 | 0, /* src_mask */ |
f5e87a1d | 312 | 0x03fffffc, /* dst_mask */ |
b34976b6 | 313 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
314 | |
315 | /* A standard 16 bit relocation. */ | |
316 | HOWTO (R_PPC64_ADDR16, /* type */ | |
317 | 0, /* rightshift */ | |
318 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
319 | 16, /* bitsize */ | |
b34976b6 | 320 | FALSE, /* pc_relative */ |
5bd4f169 AM |
321 | 0, /* bitpos */ |
322 | complain_overflow_bitfield, /* complain_on_overflow */ | |
323 | bfd_elf_generic_reloc, /* special_function */ | |
324 | "R_PPC64_ADDR16", /* name */ | |
b34976b6 | 325 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
326 | 0, /* src_mask */ |
327 | 0xffff, /* dst_mask */ | |
b34976b6 | 328 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
329 | |
330 | /* A 16 bit relocation without overflow. */ | |
331 | HOWTO (R_PPC64_ADDR16_LO, /* type */ | |
332 | 0, /* rightshift */ | |
333 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
334 | 16, /* bitsize */ | |
b34976b6 | 335 | FALSE, /* pc_relative */ |
5bd4f169 AM |
336 | 0, /* bitpos */ |
337 | complain_overflow_dont,/* complain_on_overflow */ | |
338 | bfd_elf_generic_reloc, /* special_function */ | |
339 | "R_PPC64_ADDR16_LO", /* name */ | |
b34976b6 | 340 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
341 | 0, /* src_mask */ |
342 | 0xffff, /* dst_mask */ | |
b34976b6 | 343 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
344 | |
345 | /* Bits 16-31 of an address. */ | |
346 | HOWTO (R_PPC64_ADDR16_HI, /* type */ | |
347 | 16, /* rightshift */ | |
348 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
349 | 16, /* bitsize */ | |
b34976b6 | 350 | FALSE, /* pc_relative */ |
5bd4f169 | 351 | 0, /* bitpos */ |
f9c6b907 | 352 | complain_overflow_signed, /* complain_on_overflow */ |
5bd4f169 AM |
353 | bfd_elf_generic_reloc, /* special_function */ |
354 | "R_PPC64_ADDR16_HI", /* name */ | |
b34976b6 | 355 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
356 | 0, /* src_mask */ |
357 | 0xffff, /* dst_mask */ | |
b34976b6 | 358 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
359 | |
360 | /* Bits 16-31 of an address, plus 1 if the contents of the low 16 | |
361 | bits, treated as a signed number, is negative. */ | |
362 | HOWTO (R_PPC64_ADDR16_HA, /* type */ | |
363 | 16, /* rightshift */ | |
364 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
365 | 16, /* bitsize */ | |
b34976b6 | 366 | FALSE, /* pc_relative */ |
5bd4f169 | 367 | 0, /* bitpos */ |
f9c6b907 | 368 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 369 | ppc64_elf_ha_reloc, /* special_function */ |
5bd4f169 | 370 | "R_PPC64_ADDR16_HA", /* name */ |
b34976b6 | 371 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
372 | 0, /* src_mask */ |
373 | 0xffff, /* dst_mask */ | |
b34976b6 | 374 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
375 | |
376 | /* An absolute 16 bit branch; the lower two bits must be zero. | |
377 | FIXME: we don't check that, we just clear them. */ | |
378 | HOWTO (R_PPC64_ADDR14, /* type */ | |
379 | 0, /* rightshift */ | |
380 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
381 | 16, /* bitsize */ | |
b34976b6 | 382 | FALSE, /* pc_relative */ |
5bd4f169 | 383 | 0, /* bitpos */ |
b80eed39 | 384 | complain_overflow_signed, /* complain_on_overflow */ |
2441e016 | 385 | ppc64_elf_branch_reloc, /* special_function */ |
5bd4f169 | 386 | "R_PPC64_ADDR14", /* name */ |
b34976b6 | 387 | FALSE, /* partial_inplace */ |
d006db6c | 388 | 0, /* src_mask */ |
f5e87a1d | 389 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 390 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
391 | |
392 | /* An absolute 16 bit branch, for which bit 10 should be set to | |
393 | indicate that the branch is expected to be taken. The lower two | |
394 | bits must be zero. */ | |
395 | HOWTO (R_PPC64_ADDR14_BRTAKEN, /* type */ | |
396 | 0, /* rightshift */ | |
397 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
398 | 16, /* bitsize */ | |
b34976b6 | 399 | FALSE, /* pc_relative */ |
5bd4f169 | 400 | 0, /* bitpos */ |
b80eed39 | 401 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 402 | ppc64_elf_brtaken_reloc, /* special_function */ |
5bd4f169 | 403 | "R_PPC64_ADDR14_BRTAKEN",/* name */ |
b34976b6 | 404 | FALSE, /* partial_inplace */ |
d006db6c | 405 | 0, /* src_mask */ |
f5e87a1d | 406 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 407 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
408 | |
409 | /* An absolute 16 bit branch, for which bit 10 should be set to | |
410 | indicate that the branch is not expected to be taken. The lower | |
411 | two bits must be zero. */ | |
412 | HOWTO (R_PPC64_ADDR14_BRNTAKEN, /* type */ | |
413 | 0, /* rightshift */ | |
414 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
415 | 16, /* bitsize */ | |
b34976b6 | 416 | FALSE, /* pc_relative */ |
5bd4f169 | 417 | 0, /* bitpos */ |
b80eed39 | 418 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 419 | ppc64_elf_brtaken_reloc, /* special_function */ |
5bd4f169 | 420 | "R_PPC64_ADDR14_BRNTAKEN",/* name */ |
b34976b6 | 421 | FALSE, /* partial_inplace */ |
d006db6c | 422 | 0, /* src_mask */ |
f5e87a1d | 423 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 424 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
425 | |
426 | /* A relative 26 bit branch; the lower two bits must be zero. */ | |
427 | HOWTO (R_PPC64_REL24, /* type */ | |
428 | 0, /* rightshift */ | |
429 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
430 | 26, /* bitsize */ | |
b34976b6 | 431 | TRUE, /* pc_relative */ |
5bd4f169 AM |
432 | 0, /* bitpos */ |
433 | complain_overflow_signed, /* complain_on_overflow */ | |
2441e016 | 434 | ppc64_elf_branch_reloc, /* special_function */ |
5bd4f169 | 435 | "R_PPC64_REL24", /* name */ |
b34976b6 | 436 | FALSE, /* partial_inplace */ |
d006db6c | 437 | 0, /* src_mask */ |
f5e87a1d | 438 | 0x03fffffc, /* dst_mask */ |
b34976b6 | 439 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
440 | |
441 | /* A relative 16 bit branch; the lower two bits must be zero. */ | |
442 | HOWTO (R_PPC64_REL14, /* type */ | |
443 | 0, /* rightshift */ | |
444 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
445 | 16, /* bitsize */ | |
b34976b6 | 446 | TRUE, /* pc_relative */ |
5bd4f169 AM |
447 | 0, /* bitpos */ |
448 | complain_overflow_signed, /* complain_on_overflow */ | |
2441e016 | 449 | ppc64_elf_branch_reloc, /* special_function */ |
5bd4f169 | 450 | "R_PPC64_REL14", /* name */ |
b34976b6 | 451 | FALSE, /* partial_inplace */ |
d006db6c | 452 | 0, /* src_mask */ |
f5e87a1d | 453 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 454 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
455 | |
456 | /* A relative 16 bit branch. Bit 10 should be set to indicate that | |
457 | the branch is expected to be taken. The lower two bits must be | |
458 | zero. */ | |
459 | HOWTO (R_PPC64_REL14_BRTAKEN, /* type */ | |
460 | 0, /* rightshift */ | |
461 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
462 | 16, /* bitsize */ | |
b34976b6 | 463 | TRUE, /* pc_relative */ |
5bd4f169 AM |
464 | 0, /* bitpos */ |
465 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 466 | ppc64_elf_brtaken_reloc, /* special_function */ |
5bd4f169 | 467 | "R_PPC64_REL14_BRTAKEN", /* name */ |
b34976b6 | 468 | FALSE, /* partial_inplace */ |
d006db6c | 469 | 0, /* src_mask */ |
f5e87a1d | 470 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 471 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
472 | |
473 | /* A relative 16 bit branch. Bit 10 should be set to indicate that | |
474 | the branch is not expected to be taken. The lower two bits must | |
475 | be zero. */ | |
476 | HOWTO (R_PPC64_REL14_BRNTAKEN, /* type */ | |
477 | 0, /* rightshift */ | |
478 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
479 | 16, /* bitsize */ | |
b34976b6 | 480 | TRUE, /* pc_relative */ |
5bd4f169 AM |
481 | 0, /* bitpos */ |
482 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 483 | ppc64_elf_brtaken_reloc, /* special_function */ |
5bd4f169 | 484 | "R_PPC64_REL14_BRNTAKEN",/* name */ |
b34976b6 | 485 | FALSE, /* partial_inplace */ |
d006db6c | 486 | 0, /* src_mask */ |
f5e87a1d | 487 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 488 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
489 | |
490 | /* Like R_PPC64_ADDR16, but referring to the GOT table entry for the | |
491 | symbol. */ | |
492 | HOWTO (R_PPC64_GOT16, /* type */ | |
493 | 0, /* rightshift */ | |
494 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
495 | 16, /* bitsize */ | |
b34976b6 | 496 | FALSE, /* pc_relative */ |
5bd4f169 AM |
497 | 0, /* bitpos */ |
498 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 499 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 500 | "R_PPC64_GOT16", /* name */ |
b34976b6 | 501 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
502 | 0, /* src_mask */ |
503 | 0xffff, /* dst_mask */ | |
b34976b6 | 504 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
505 | |
506 | /* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for | |
507 | the symbol. */ | |
508 | HOWTO (R_PPC64_GOT16_LO, /* type */ | |
509 | 0, /* rightshift */ | |
510 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
511 | 16, /* bitsize */ | |
b34976b6 | 512 | FALSE, /* pc_relative */ |
5bd4f169 AM |
513 | 0, /* bitpos */ |
514 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 515 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 516 | "R_PPC64_GOT16_LO", /* name */ |
b34976b6 | 517 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
518 | 0, /* src_mask */ |
519 | 0xffff, /* dst_mask */ | |
b34976b6 | 520 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
521 | |
522 | /* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for | |
523 | the symbol. */ | |
524 | HOWTO (R_PPC64_GOT16_HI, /* type */ | |
525 | 16, /* rightshift */ | |
526 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
527 | 16, /* bitsize */ | |
b34976b6 | 528 | FALSE, /* pc_relative */ |
5bd4f169 | 529 | 0, /* bitpos */ |
f9c6b907 | 530 | complain_overflow_signed,/* complain_on_overflow */ |
805fc799 | 531 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 532 | "R_PPC64_GOT16_HI", /* name */ |
b34976b6 | 533 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
534 | 0, /* src_mask */ |
535 | 0xffff, /* dst_mask */ | |
b34976b6 | 536 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
537 | |
538 | /* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for | |
539 | the symbol. */ | |
540 | HOWTO (R_PPC64_GOT16_HA, /* type */ | |
541 | 16, /* rightshift */ | |
542 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
543 | 16, /* bitsize */ | |
b34976b6 | 544 | FALSE, /* pc_relative */ |
5bd4f169 | 545 | 0, /* bitpos */ |
f9c6b907 | 546 | complain_overflow_signed,/* complain_on_overflow */ |
805fc799 | 547 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 548 | "R_PPC64_GOT16_HA", /* name */ |
b34976b6 | 549 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
550 | 0, /* src_mask */ |
551 | 0xffff, /* dst_mask */ | |
b34976b6 | 552 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
553 | |
554 | /* This is used only by the dynamic linker. The symbol should exist | |
555 | both in the object being run and in some shared library. The | |
556 | dynamic linker copies the data addressed by the symbol from the | |
557 | shared library into the object, because the object being | |
558 | run has to have the data at some particular address. */ | |
559 | HOWTO (R_PPC64_COPY, /* type */ | |
560 | 0, /* rightshift */ | |
f5e87a1d AM |
561 | 0, /* this one is variable size */ |
562 | 0, /* bitsize */ | |
b34976b6 | 563 | FALSE, /* pc_relative */ |
5bd4f169 | 564 | 0, /* bitpos */ |
f5e87a1d AM |
565 | complain_overflow_dont, /* complain_on_overflow */ |
566 | ppc64_elf_unhandled_reloc, /* special_function */ | |
5bd4f169 | 567 | "R_PPC64_COPY", /* name */ |
b34976b6 | 568 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
569 | 0, /* src_mask */ |
570 | 0, /* dst_mask */ | |
b34976b6 | 571 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
572 | |
573 | /* Like R_PPC64_ADDR64, but used when setting global offset table | |
574 | entries. */ | |
575 | HOWTO (R_PPC64_GLOB_DAT, /* type */ | |
576 | 0, /* rightshift */ | |
577 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
578 | 64, /* bitsize */ | |
b34976b6 | 579 | FALSE, /* pc_relative */ |
5bd4f169 AM |
580 | 0, /* bitpos */ |
581 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 582 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 583 | "R_PPC64_GLOB_DAT", /* name */ |
b34976b6 | 584 | FALSE, /* partial_inplace */ |
5bd4f169 | 585 | 0, /* src_mask */ |
f5e87a1d | 586 | ONES (64), /* dst_mask */ |
b34976b6 | 587 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
588 | |
589 | /* Created by the link editor. Marks a procedure linkage table | |
590 | entry for a symbol. */ | |
591 | HOWTO (R_PPC64_JMP_SLOT, /* type */ | |
592 | 0, /* rightshift */ | |
593 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
594 | 0, /* bitsize */ | |
b34976b6 | 595 | FALSE, /* pc_relative */ |
5bd4f169 AM |
596 | 0, /* bitpos */ |
597 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 598 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 599 | "R_PPC64_JMP_SLOT", /* name */ |
b34976b6 | 600 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
601 | 0, /* src_mask */ |
602 | 0, /* dst_mask */ | |
b34976b6 | 603 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
604 | |
605 | /* Used only by the dynamic linker. When the object is run, this | |
606 | doubleword64 is set to the load address of the object, plus the | |
607 | addend. */ | |
608 | HOWTO (R_PPC64_RELATIVE, /* type */ | |
609 | 0, /* rightshift */ | |
610 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
611 | 64, /* bitsize */ | |
b34976b6 | 612 | FALSE, /* pc_relative */ |
5bd4f169 AM |
613 | 0, /* bitpos */ |
614 | complain_overflow_dont, /* complain_on_overflow */ | |
615 | bfd_elf_generic_reloc, /* special_function */ | |
616 | "R_PPC64_RELATIVE", /* name */ | |
b34976b6 | 617 | FALSE, /* partial_inplace */ |
5bd4f169 | 618 | 0, /* src_mask */ |
f5e87a1d | 619 | ONES (64), /* dst_mask */ |
b34976b6 | 620 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
621 | |
622 | /* Like R_PPC64_ADDR32, but may be unaligned. */ | |
623 | HOWTO (R_PPC64_UADDR32, /* type */ | |
624 | 0, /* rightshift */ | |
625 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
626 | 32, /* bitsize */ | |
b34976b6 | 627 | FALSE, /* pc_relative */ |
5bd4f169 AM |
628 | 0, /* bitpos */ |
629 | complain_overflow_bitfield, /* complain_on_overflow */ | |
630 | bfd_elf_generic_reloc, /* special_function */ | |
631 | "R_PPC64_UADDR32", /* name */ | |
b34976b6 | 632 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
633 | 0, /* src_mask */ |
634 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 635 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
636 | |
637 | /* Like R_PPC64_ADDR16, but may be unaligned. */ | |
638 | HOWTO (R_PPC64_UADDR16, /* type */ | |
639 | 0, /* rightshift */ | |
640 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
641 | 16, /* bitsize */ | |
b34976b6 | 642 | FALSE, /* pc_relative */ |
5bd4f169 AM |
643 | 0, /* bitpos */ |
644 | complain_overflow_bitfield, /* complain_on_overflow */ | |
645 | bfd_elf_generic_reloc, /* special_function */ | |
646 | "R_PPC64_UADDR16", /* name */ | |
b34976b6 | 647 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
648 | 0, /* src_mask */ |
649 | 0xffff, /* dst_mask */ | |
b34976b6 | 650 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
651 | |
652 | /* 32-bit PC relative. */ | |
653 | HOWTO (R_PPC64_REL32, /* type */ | |
654 | 0, /* rightshift */ | |
655 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
656 | 32, /* bitsize */ | |
b34976b6 | 657 | TRUE, /* pc_relative */ |
5bd4f169 | 658 | 0, /* bitpos */ |
5bd4f169 AM |
659 | complain_overflow_signed, /* complain_on_overflow */ |
660 | bfd_elf_generic_reloc, /* special_function */ | |
661 | "R_PPC64_REL32", /* name */ | |
b34976b6 | 662 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
663 | 0, /* src_mask */ |
664 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 665 | TRUE), /* pcrel_offset */ |
5bd4f169 | 666 | |
10ed1bba | 667 | /* 32-bit relocation to the symbol's procedure linkage table. */ |
5bd4f169 AM |
668 | HOWTO (R_PPC64_PLT32, /* type */ |
669 | 0, /* rightshift */ | |
670 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
671 | 32, /* bitsize */ | |
b34976b6 | 672 | FALSE, /* pc_relative */ |
5bd4f169 AM |
673 | 0, /* bitpos */ |
674 | complain_overflow_bitfield, /* complain_on_overflow */ | |
805fc799 | 675 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 676 | "R_PPC64_PLT32", /* name */ |
b34976b6 | 677 | FALSE, /* partial_inplace */ |
5bd4f169 | 678 | 0, /* src_mask */ |
f5e87a1d | 679 | 0xffffffff, /* dst_mask */ |
b34976b6 | 680 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
681 | |
682 | /* 32-bit PC relative relocation to the symbol's procedure linkage table. | |
683 | FIXME: R_PPC64_PLTREL32 not supported. */ | |
684 | HOWTO (R_PPC64_PLTREL32, /* type */ | |
685 | 0, /* rightshift */ | |
686 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
687 | 32, /* bitsize */ | |
b34976b6 | 688 | TRUE, /* pc_relative */ |
5bd4f169 AM |
689 | 0, /* bitpos */ |
690 | complain_overflow_signed, /* complain_on_overflow */ | |
3ce51288 | 691 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 692 | "R_PPC64_PLTREL32", /* name */ |
b34976b6 | 693 | FALSE, /* partial_inplace */ |
5bd4f169 | 694 | 0, /* src_mask */ |
f5e87a1d | 695 | 0xffffffff, /* dst_mask */ |
b34976b6 | 696 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
697 | |
698 | /* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for | |
699 | the symbol. */ | |
700 | HOWTO (R_PPC64_PLT16_LO, /* type */ | |
701 | 0, /* rightshift */ | |
702 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
703 | 16, /* bitsize */ | |
b34976b6 | 704 | FALSE, /* pc_relative */ |
5bd4f169 AM |
705 | 0, /* bitpos */ |
706 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 707 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 708 | "R_PPC64_PLT16_LO", /* name */ |
b34976b6 | 709 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
710 | 0, /* src_mask */ |
711 | 0xffff, /* dst_mask */ | |
b34976b6 | 712 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
713 | |
714 | /* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for | |
715 | the symbol. */ | |
716 | HOWTO (R_PPC64_PLT16_HI, /* type */ | |
717 | 16, /* rightshift */ | |
718 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
719 | 16, /* bitsize */ | |
b34976b6 | 720 | FALSE, /* pc_relative */ |
5bd4f169 | 721 | 0, /* bitpos */ |
f9c6b907 | 722 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 723 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 724 | "R_PPC64_PLT16_HI", /* name */ |
b34976b6 | 725 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
726 | 0, /* src_mask */ |
727 | 0xffff, /* dst_mask */ | |
b34976b6 | 728 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
729 | |
730 | /* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for | |
731 | the symbol. */ | |
732 | HOWTO (R_PPC64_PLT16_HA, /* type */ | |
733 | 16, /* rightshift */ | |
734 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
735 | 16, /* bitsize */ | |
b34976b6 | 736 | FALSE, /* pc_relative */ |
5bd4f169 | 737 | 0, /* bitpos */ |
f9c6b907 | 738 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 739 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 740 | "R_PPC64_PLT16_HA", /* name */ |
b34976b6 | 741 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
742 | 0, /* src_mask */ |
743 | 0xffff, /* dst_mask */ | |
b34976b6 | 744 | FALSE), /* pcrel_offset */ |
5bd4f169 | 745 | |
c061c2d8 | 746 | /* 16-bit section relative relocation. */ |
5bd4f169 AM |
747 | HOWTO (R_PPC64_SECTOFF, /* type */ |
748 | 0, /* rightshift */ | |
c061c2d8 AM |
749 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
750 | 16, /* bitsize */ | |
b34976b6 | 751 | FALSE, /* pc_relative */ |
5bd4f169 | 752 | 0, /* bitpos */ |
b80eed39 | 753 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 754 | ppc64_elf_sectoff_reloc, /* special_function */ |
5bd4f169 | 755 | "R_PPC64_SECTOFF", /* name */ |
b34976b6 | 756 | FALSE, /* partial_inplace */ |
5bd4f169 | 757 | 0, /* src_mask */ |
c061c2d8 | 758 | 0xffff, /* dst_mask */ |
b34976b6 | 759 | FALSE), /* pcrel_offset */ |
5bd4f169 | 760 | |
c061c2d8 | 761 | /* Like R_PPC64_SECTOFF, but no overflow warning. */ |
5bd4f169 AM |
762 | HOWTO (R_PPC64_SECTOFF_LO, /* type */ |
763 | 0, /* rightshift */ | |
764 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
765 | 16, /* bitsize */ | |
b34976b6 | 766 | FALSE, /* pc_relative */ |
5bd4f169 AM |
767 | 0, /* bitpos */ |
768 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 769 | ppc64_elf_sectoff_reloc, /* special_function */ |
5bd4f169 | 770 | "R_PPC64_SECTOFF_LO", /* name */ |
b34976b6 | 771 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
772 | 0, /* src_mask */ |
773 | 0xffff, /* dst_mask */ | |
b34976b6 | 774 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
775 | |
776 | /* 16-bit upper half section relative relocation. */ | |
777 | HOWTO (R_PPC64_SECTOFF_HI, /* type */ | |
778 | 16, /* rightshift */ | |
779 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
780 | 16, /* bitsize */ | |
b34976b6 | 781 | FALSE, /* pc_relative */ |
5bd4f169 | 782 | 0, /* bitpos */ |
f9c6b907 | 783 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 784 | ppc64_elf_sectoff_reloc, /* special_function */ |
5bd4f169 | 785 | "R_PPC64_SECTOFF_HI", /* name */ |
b34976b6 | 786 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
787 | 0, /* src_mask */ |
788 | 0xffff, /* dst_mask */ | |
b34976b6 | 789 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
790 | |
791 | /* 16-bit upper half adjusted section relative relocation. */ | |
792 | HOWTO (R_PPC64_SECTOFF_HA, /* type */ | |
793 | 16, /* rightshift */ | |
794 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
795 | 16, /* bitsize */ | |
b34976b6 | 796 | FALSE, /* pc_relative */ |
5bd4f169 | 797 | 0, /* bitpos */ |
f9c6b907 | 798 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 799 | ppc64_elf_sectoff_ha_reloc, /* special_function */ |
5bd4f169 | 800 | "R_PPC64_SECTOFF_HA", /* name */ |
b34976b6 | 801 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
802 | 0, /* src_mask */ |
803 | 0xffff, /* dst_mask */ | |
b34976b6 | 804 | FALSE), /* pcrel_offset */ |
5bd4f169 | 805 | |
04c9666a AM |
806 | /* Like R_PPC64_REL24 without touching the two least significant bits. */ |
807 | HOWTO (R_PPC64_REL30, /* type */ | |
5bd4f169 AM |
808 | 2, /* rightshift */ |
809 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
810 | 30, /* bitsize */ | |
b34976b6 | 811 | TRUE, /* pc_relative */ |
5bd4f169 AM |
812 | 0, /* bitpos */ |
813 | complain_overflow_dont, /* complain_on_overflow */ | |
814 | bfd_elf_generic_reloc, /* special_function */ | |
04c9666a | 815 | "R_PPC64_REL30", /* name */ |
b34976b6 | 816 | FALSE, /* partial_inplace */ |
d006db6c | 817 | 0, /* src_mask */ |
5bd4f169 | 818 | 0xfffffffc, /* dst_mask */ |
b34976b6 | 819 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
820 | |
821 | /* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */ | |
822 | ||
823 | /* A standard 64-bit relocation. */ | |
824 | HOWTO (R_PPC64_ADDR64, /* type */ | |
825 | 0, /* rightshift */ | |
826 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
827 | 64, /* bitsize */ | |
b34976b6 | 828 | FALSE, /* pc_relative */ |
5bd4f169 AM |
829 | 0, /* bitpos */ |
830 | complain_overflow_dont, /* complain_on_overflow */ | |
831 | bfd_elf_generic_reloc, /* special_function */ | |
832 | "R_PPC64_ADDR64", /* name */ | |
b34976b6 | 833 | FALSE, /* partial_inplace */ |
5bd4f169 | 834 | 0, /* src_mask */ |
f5e87a1d | 835 | ONES (64), /* dst_mask */ |
b34976b6 | 836 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
837 | |
838 | /* The bits 32-47 of an address. */ | |
839 | HOWTO (R_PPC64_ADDR16_HIGHER, /* type */ | |
840 | 32, /* rightshift */ | |
841 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
842 | 16, /* bitsize */ | |
b34976b6 | 843 | FALSE, /* pc_relative */ |
5bd4f169 AM |
844 | 0, /* bitpos */ |
845 | complain_overflow_dont, /* complain_on_overflow */ | |
846 | bfd_elf_generic_reloc, /* special_function */ | |
847 | "R_PPC64_ADDR16_HIGHER", /* name */ | |
b34976b6 | 848 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
849 | 0, /* src_mask */ |
850 | 0xffff, /* dst_mask */ | |
b34976b6 | 851 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
852 | |
853 | /* The bits 32-47 of an address, plus 1 if the contents of the low | |
854 | 16 bits, treated as a signed number, is negative. */ | |
855 | HOWTO (R_PPC64_ADDR16_HIGHERA, /* type */ | |
856 | 32, /* rightshift */ | |
857 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
858 | 16, /* bitsize */ | |
b34976b6 | 859 | FALSE, /* pc_relative */ |
5bd4f169 AM |
860 | 0, /* bitpos */ |
861 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 862 | ppc64_elf_ha_reloc, /* special_function */ |
5bd4f169 | 863 | "R_PPC64_ADDR16_HIGHERA", /* name */ |
b34976b6 | 864 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
865 | 0, /* src_mask */ |
866 | 0xffff, /* dst_mask */ | |
b34976b6 | 867 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
868 | |
869 | /* The bits 48-63 of an address. */ | |
870 | HOWTO (R_PPC64_ADDR16_HIGHEST,/* type */ | |
871 | 48, /* rightshift */ | |
872 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
873 | 16, /* bitsize */ | |
b34976b6 | 874 | FALSE, /* pc_relative */ |
5bd4f169 AM |
875 | 0, /* bitpos */ |
876 | complain_overflow_dont, /* complain_on_overflow */ | |
877 | bfd_elf_generic_reloc, /* special_function */ | |
878 | "R_PPC64_ADDR16_HIGHEST", /* name */ | |
b34976b6 | 879 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
880 | 0, /* src_mask */ |
881 | 0xffff, /* dst_mask */ | |
b34976b6 | 882 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
883 | |
884 | /* The bits 48-63 of an address, plus 1 if the contents of the low | |
885 | 16 bits, treated as a signed number, is negative. */ | |
886 | HOWTO (R_PPC64_ADDR16_HIGHESTA,/* type */ | |
887 | 48, /* rightshift */ | |
888 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
889 | 16, /* bitsize */ | |
b34976b6 | 890 | FALSE, /* pc_relative */ |
5bd4f169 AM |
891 | 0, /* bitpos */ |
892 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 893 | ppc64_elf_ha_reloc, /* special_function */ |
5bd4f169 | 894 | "R_PPC64_ADDR16_HIGHESTA", /* name */ |
b34976b6 | 895 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
896 | 0, /* src_mask */ |
897 | 0xffff, /* dst_mask */ | |
b34976b6 | 898 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
899 | |
900 | /* Like ADDR64, but may be unaligned. */ | |
901 | HOWTO (R_PPC64_UADDR64, /* type */ | |
902 | 0, /* rightshift */ | |
903 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
904 | 64, /* bitsize */ | |
b34976b6 | 905 | FALSE, /* pc_relative */ |
5bd4f169 AM |
906 | 0, /* bitpos */ |
907 | complain_overflow_dont, /* complain_on_overflow */ | |
908 | bfd_elf_generic_reloc, /* special_function */ | |
909 | "R_PPC64_UADDR64", /* name */ | |
b34976b6 | 910 | FALSE, /* partial_inplace */ |
5bd4f169 | 911 | 0, /* src_mask */ |
f5e87a1d | 912 | ONES (64), /* dst_mask */ |
b34976b6 | 913 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
914 | |
915 | /* 64-bit relative relocation. */ | |
916 | HOWTO (R_PPC64_REL64, /* type */ | |
917 | 0, /* rightshift */ | |
918 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
919 | 64, /* bitsize */ | |
b34976b6 | 920 | TRUE, /* pc_relative */ |
5bd4f169 AM |
921 | 0, /* bitpos */ |
922 | complain_overflow_dont, /* complain_on_overflow */ | |
923 | bfd_elf_generic_reloc, /* special_function */ | |
924 | "R_PPC64_REL64", /* name */ | |
b34976b6 | 925 | FALSE, /* partial_inplace */ |
5bd4f169 | 926 | 0, /* src_mask */ |
f5e87a1d | 927 | ONES (64), /* dst_mask */ |
b34976b6 | 928 | TRUE), /* pcrel_offset */ |
5bd4f169 | 929 | |
cedb70c5 | 930 | /* 64-bit relocation to the symbol's procedure linkage table. */ |
5bd4f169 AM |
931 | HOWTO (R_PPC64_PLT64, /* type */ |
932 | 0, /* rightshift */ | |
933 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
934 | 64, /* bitsize */ | |
b34976b6 | 935 | FALSE, /* pc_relative */ |
5bd4f169 AM |
936 | 0, /* bitpos */ |
937 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 938 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 939 | "R_PPC64_PLT64", /* name */ |
b34976b6 | 940 | FALSE, /* partial_inplace */ |
5bd4f169 | 941 | 0, /* src_mask */ |
f5e87a1d | 942 | ONES (64), /* dst_mask */ |
b34976b6 | 943 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
944 | |
945 | /* 64-bit PC relative relocation to the symbol's procedure linkage | |
946 | table. */ | |
947 | /* FIXME: R_PPC64_PLTREL64 not supported. */ | |
948 | HOWTO (R_PPC64_PLTREL64, /* type */ | |
949 | 0, /* rightshift */ | |
950 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
951 | 64, /* bitsize */ | |
b34976b6 | 952 | TRUE, /* pc_relative */ |
5bd4f169 AM |
953 | 0, /* bitpos */ |
954 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 955 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 956 | "R_PPC64_PLTREL64", /* name */ |
b34976b6 | 957 | FALSE, /* partial_inplace */ |
5bd4f169 | 958 | 0, /* src_mask */ |
f5e87a1d | 959 | ONES (64), /* dst_mask */ |
b34976b6 | 960 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
961 | |
962 | /* 16 bit TOC-relative relocation. */ | |
963 | ||
964 | /* R_PPC64_TOC16 47 half16* S + A - .TOC. */ | |
965 | HOWTO (R_PPC64_TOC16, /* type */ | |
966 | 0, /* rightshift */ | |
967 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
968 | 16, /* bitsize */ | |
b34976b6 | 969 | FALSE, /* pc_relative */ |
5bd4f169 AM |
970 | 0, /* bitpos */ |
971 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 972 | ppc64_elf_toc_reloc, /* special_function */ |
5bd4f169 | 973 | "R_PPC64_TOC16", /* name */ |
b34976b6 | 974 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
975 | 0, /* src_mask */ |
976 | 0xffff, /* dst_mask */ | |
b34976b6 | 977 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
978 | |
979 | /* 16 bit TOC-relative relocation without overflow. */ | |
980 | ||
981 | /* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */ | |
982 | HOWTO (R_PPC64_TOC16_LO, /* type */ | |
983 | 0, /* rightshift */ | |
984 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
985 | 16, /* bitsize */ | |
b34976b6 | 986 | FALSE, /* pc_relative */ |
5bd4f169 AM |
987 | 0, /* bitpos */ |
988 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 989 | ppc64_elf_toc_reloc, /* special_function */ |
5bd4f169 | 990 | "R_PPC64_TOC16_LO", /* name */ |
b34976b6 | 991 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
992 | 0, /* src_mask */ |
993 | 0xffff, /* dst_mask */ | |
b34976b6 | 994 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
995 | |
996 | /* 16 bit TOC-relative relocation, high 16 bits. */ | |
997 | ||
998 | /* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */ | |
999 | HOWTO (R_PPC64_TOC16_HI, /* type */ | |
1000 | 16, /* rightshift */ | |
1001 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1002 | 16, /* bitsize */ | |
b34976b6 | 1003 | FALSE, /* pc_relative */ |
5bd4f169 | 1004 | 0, /* bitpos */ |
f9c6b907 | 1005 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 1006 | ppc64_elf_toc_reloc, /* special_function */ |
5bd4f169 | 1007 | "R_PPC64_TOC16_HI", /* name */ |
b34976b6 | 1008 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1009 | 0, /* src_mask */ |
1010 | 0xffff, /* dst_mask */ | |
b34976b6 | 1011 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
1012 | |
1013 | /* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the | |
1014 | contents of the low 16 bits, treated as a signed number, is | |
1015 | negative. */ | |
1016 | ||
1017 | /* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */ | |
1018 | HOWTO (R_PPC64_TOC16_HA, /* type */ | |
1019 | 16, /* rightshift */ | |
1020 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1021 | 16, /* bitsize */ | |
b34976b6 | 1022 | FALSE, /* pc_relative */ |
5bd4f169 | 1023 | 0, /* bitpos */ |
f9c6b907 | 1024 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 1025 | ppc64_elf_toc_ha_reloc, /* special_function */ |
5bd4f169 | 1026 | "R_PPC64_TOC16_HA", /* name */ |
b34976b6 | 1027 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1028 | 0, /* src_mask */ |
1029 | 0xffff, /* dst_mask */ | |
b34976b6 | 1030 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
1031 | |
1032 | /* 64-bit relocation; insert value of TOC base (.TOC.). */ | |
1033 | ||
1034 | /* R_PPC64_TOC 51 doubleword64 .TOC. */ | |
1035 | HOWTO (R_PPC64_TOC, /* type */ | |
1036 | 0, /* rightshift */ | |
1037 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
1038 | 64, /* bitsize */ | |
b34976b6 | 1039 | FALSE, /* pc_relative */ |
5bd4f169 | 1040 | 0, /* bitpos */ |
b80eed39 | 1041 | complain_overflow_dont, /* complain_on_overflow */ |
805fc799 | 1042 | ppc64_elf_toc64_reloc, /* special_function */ |
5bd4f169 | 1043 | "R_PPC64_TOC", /* name */ |
b34976b6 | 1044 | FALSE, /* partial_inplace */ |
5bd4f169 | 1045 | 0, /* src_mask */ |
f5e87a1d | 1046 | ONES (64), /* dst_mask */ |
b34976b6 | 1047 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
1048 | |
1049 | /* Like R_PPC64_GOT16, but also informs the link editor that the | |
1050 | value to relocate may (!) refer to a PLT entry which the link | |
1051 | editor (a) may replace with the symbol value. If the link editor | |
1052 | is unable to fully resolve the symbol, it may (b) create a PLT | |
1053 | entry and store the address to the new PLT entry in the GOT. | |
1054 | This permits lazy resolution of function symbols at run time. | |
1055 | The link editor may also skip all of this and just (c) emit a | |
1056 | R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */ | |
1057 | /* FIXME: R_PPC64_PLTGOT16 not implemented. */ | |
1058 | HOWTO (R_PPC64_PLTGOT16, /* type */ | |
1059 | 0, /* rightshift */ | |
1060 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1061 | 16, /* bitsize */ | |
b34976b6 | 1062 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1063 | 0, /* bitpos */ |
1064 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 1065 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb AM |
1066 | "R_PPC64_PLTGOT16", /* name */ |
1067 | FALSE, /* partial_inplace */ | |
1068 | 0, /* src_mask */ | |
1069 | 0xffff, /* dst_mask */ | |
1070 | FALSE), /* pcrel_offset */ | |
1071 | ||
1072 | /* Like R_PPC64_PLTGOT16, but without overflow. */ | |
1073 | /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */ | |
1074 | HOWTO (R_PPC64_PLTGOT16_LO, /* type */ | |
1075 | 0, /* rightshift */ | |
1076 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1077 | 16, /* bitsize */ | |
1078 | FALSE, /* pc_relative */ | |
1079 | 0, /* bitpos */ | |
1080 | complain_overflow_dont, /* complain_on_overflow */ | |
1081 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1082 | "R_PPC64_PLTGOT16_LO", /* name */ | |
1083 | FALSE, /* partial_inplace */ | |
1084 | 0, /* src_mask */ | |
1085 | 0xffff, /* dst_mask */ | |
1086 | FALSE), /* pcrel_offset */ | |
1087 | ||
1088 | /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */ | |
1089 | /* FIXME: R_PPC64_PLTGOT16_HI not implemented. */ | |
1090 | HOWTO (R_PPC64_PLTGOT16_HI, /* type */ | |
1091 | 16, /* rightshift */ | |
1092 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1093 | 16, /* bitsize */ | |
1094 | FALSE, /* pc_relative */ | |
1095 | 0, /* bitpos */ | |
f9c6b907 | 1096 | complain_overflow_signed, /* complain_on_overflow */ |
411e1bfb AM |
1097 | ppc64_elf_unhandled_reloc, /* special_function */ |
1098 | "R_PPC64_PLTGOT16_HI", /* name */ | |
1099 | FALSE, /* partial_inplace */ | |
1100 | 0, /* src_mask */ | |
1101 | 0xffff, /* dst_mask */ | |
1102 | FALSE), /* pcrel_offset */ | |
1103 | ||
1104 | /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus | |
1105 | 1 if the contents of the low 16 bits, treated as a signed number, | |
1106 | is negative. */ | |
1107 | /* FIXME: R_PPC64_PLTGOT16_HA not implemented. */ | |
1108 | HOWTO (R_PPC64_PLTGOT16_HA, /* type */ | |
1109 | 16, /* rightshift */ | |
1110 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1111 | 16, /* bitsize */ | |
1112 | FALSE, /* pc_relative */ | |
1113 | 0, /* bitpos */ | |
f9c6b907 | 1114 | complain_overflow_signed, /* complain_on_overflow */ |
411e1bfb AM |
1115 | ppc64_elf_unhandled_reloc, /* special_function */ |
1116 | "R_PPC64_PLTGOT16_HA", /* name */ | |
1117 | FALSE, /* partial_inplace */ | |
1118 | 0, /* src_mask */ | |
1119 | 0xffff, /* dst_mask */ | |
1120 | FALSE), /* pcrel_offset */ | |
1121 | ||
1122 | /* Like R_PPC64_ADDR16, but for instructions with a DS field. */ | |
1123 | HOWTO (R_PPC64_ADDR16_DS, /* type */ | |
1124 | 0, /* rightshift */ | |
1125 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1126 | 16, /* bitsize */ | |
1127 | FALSE, /* pc_relative */ | |
1128 | 0, /* bitpos */ | |
b80eed39 | 1129 | complain_overflow_signed, /* complain_on_overflow */ |
411e1bfb AM |
1130 | bfd_elf_generic_reloc, /* special_function */ |
1131 | "R_PPC64_ADDR16_DS", /* name */ | |
1132 | FALSE, /* partial_inplace */ | |
1133 | 0, /* src_mask */ | |
1134 | 0xfffc, /* dst_mask */ | |
1135 | FALSE), /* pcrel_offset */ | |
1136 | ||
1137 | /* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */ | |
1138 | HOWTO (R_PPC64_ADDR16_LO_DS, /* type */ | |
1139 | 0, /* rightshift */ | |
1140 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1141 | 16, /* bitsize */ | |
1142 | FALSE, /* pc_relative */ | |
1143 | 0, /* bitpos */ | |
1144 | complain_overflow_dont,/* complain_on_overflow */ | |
1145 | bfd_elf_generic_reloc, /* special_function */ | |
1146 | "R_PPC64_ADDR16_LO_DS",/* name */ | |
1147 | FALSE, /* partial_inplace */ | |
1148 | 0, /* src_mask */ | |
1149 | 0xfffc, /* dst_mask */ | |
1150 | FALSE), /* pcrel_offset */ | |
1151 | ||
1152 | /* Like R_PPC64_GOT16, but for instructions with a DS field. */ | |
1153 | HOWTO (R_PPC64_GOT16_DS, /* type */ | |
1154 | 0, /* rightshift */ | |
1155 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1156 | 16, /* bitsize */ | |
1157 | FALSE, /* pc_relative */ | |
1158 | 0, /* bitpos */ | |
1159 | complain_overflow_signed, /* complain_on_overflow */ | |
1160 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1161 | "R_PPC64_GOT16_DS", /* name */ | |
1162 | FALSE, /* partial_inplace */ | |
1163 | 0, /* src_mask */ | |
1164 | 0xfffc, /* dst_mask */ | |
1165 | FALSE), /* pcrel_offset */ | |
1166 | ||
1167 | /* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */ | |
1168 | HOWTO (R_PPC64_GOT16_LO_DS, /* type */ | |
1169 | 0, /* rightshift */ | |
1170 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1171 | 16, /* bitsize */ | |
1172 | FALSE, /* pc_relative */ | |
1173 | 0, /* bitpos */ | |
1174 | complain_overflow_dont, /* complain_on_overflow */ | |
1175 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1176 | "R_PPC64_GOT16_LO_DS", /* name */ | |
1177 | FALSE, /* partial_inplace */ | |
1178 | 0, /* src_mask */ | |
1179 | 0xfffc, /* dst_mask */ | |
1180 | FALSE), /* pcrel_offset */ | |
1181 | ||
1182 | /* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */ | |
1183 | HOWTO (R_PPC64_PLT16_LO_DS, /* type */ | |
1184 | 0, /* rightshift */ | |
1185 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1186 | 16, /* bitsize */ | |
1187 | FALSE, /* pc_relative */ | |
1188 | 0, /* bitpos */ | |
1189 | complain_overflow_dont, /* complain_on_overflow */ | |
1190 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1191 | "R_PPC64_PLT16_LO_DS", /* name */ | |
1192 | FALSE, /* partial_inplace */ | |
1193 | 0, /* src_mask */ | |
1194 | 0xfffc, /* dst_mask */ | |
1195 | FALSE), /* pcrel_offset */ | |
1196 | ||
1197 | /* Like R_PPC64_SECTOFF, but for instructions with a DS field. */ | |
1198 | HOWTO (R_PPC64_SECTOFF_DS, /* type */ | |
1199 | 0, /* rightshift */ | |
1200 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1201 | 16, /* bitsize */ | |
1202 | FALSE, /* pc_relative */ | |
1203 | 0, /* bitpos */ | |
b80eed39 | 1204 | complain_overflow_signed, /* complain_on_overflow */ |
411e1bfb AM |
1205 | ppc64_elf_sectoff_reloc, /* special_function */ |
1206 | "R_PPC64_SECTOFF_DS", /* name */ | |
1207 | FALSE, /* partial_inplace */ | |
1208 | 0, /* src_mask */ | |
1209 | 0xfffc, /* dst_mask */ | |
1210 | FALSE), /* pcrel_offset */ | |
1211 | ||
1212 | /* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */ | |
1213 | HOWTO (R_PPC64_SECTOFF_LO_DS, /* type */ | |
1214 | 0, /* rightshift */ | |
1215 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1216 | 16, /* bitsize */ | |
1217 | FALSE, /* pc_relative */ | |
1218 | 0, /* bitpos */ | |
1219 | complain_overflow_dont, /* complain_on_overflow */ | |
1220 | ppc64_elf_sectoff_reloc, /* special_function */ | |
1221 | "R_PPC64_SECTOFF_LO_DS",/* name */ | |
1222 | FALSE, /* partial_inplace */ | |
1223 | 0, /* src_mask */ | |
1224 | 0xfffc, /* dst_mask */ | |
1225 | FALSE), /* pcrel_offset */ | |
1226 | ||
1227 | /* Like R_PPC64_TOC16, but for instructions with a DS field. */ | |
1228 | HOWTO (R_PPC64_TOC16_DS, /* type */ | |
1229 | 0, /* rightshift */ | |
1230 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1231 | 16, /* bitsize */ | |
1232 | FALSE, /* pc_relative */ | |
1233 | 0, /* bitpos */ | |
1234 | complain_overflow_signed, /* complain_on_overflow */ | |
1235 | ppc64_elf_toc_reloc, /* special_function */ | |
1236 | "R_PPC64_TOC16_DS", /* name */ | |
1237 | FALSE, /* partial_inplace */ | |
1238 | 0, /* src_mask */ | |
1239 | 0xfffc, /* dst_mask */ | |
1240 | FALSE), /* pcrel_offset */ | |
1241 | ||
1242 | /* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */ | |
1243 | HOWTO (R_PPC64_TOC16_LO_DS, /* type */ | |
1244 | 0, /* rightshift */ | |
1245 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1246 | 16, /* bitsize */ | |
1247 | FALSE, /* pc_relative */ | |
1248 | 0, /* bitpos */ | |
1249 | complain_overflow_dont, /* complain_on_overflow */ | |
1250 | ppc64_elf_toc_reloc, /* special_function */ | |
1251 | "R_PPC64_TOC16_LO_DS", /* name */ | |
1252 | FALSE, /* partial_inplace */ | |
1253 | 0, /* src_mask */ | |
1254 | 0xfffc, /* dst_mask */ | |
1255 | FALSE), /* pcrel_offset */ | |
1256 | ||
1257 | /* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */ | |
1258 | /* FIXME: R_PPC64_PLTGOT16_DS not implemented. */ | |
6bfdb61b | 1259 | HOWTO (R_PPC64_PLTGOT16_DS, /* type */ |
411e1bfb AM |
1260 | 0, /* rightshift */ |
1261 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1262 | 16, /* bitsize */ | |
1263 | FALSE, /* pc_relative */ | |
1264 | 0, /* bitpos */ | |
1265 | complain_overflow_signed, /* complain_on_overflow */ | |
1266 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1267 | "R_PPC64_PLTGOT16_DS", /* name */ | |
1268 | FALSE, /* partial_inplace */ | |
1269 | 0, /* src_mask */ | |
1270 | 0xfffc, /* dst_mask */ | |
1271 | FALSE), /* pcrel_offset */ | |
1272 | ||
1273 | /* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */ | |
1274 | /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */ | |
1275 | HOWTO (R_PPC64_PLTGOT16_LO_DS,/* type */ | |
1276 | 0, /* rightshift */ | |
1277 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1278 | 16, /* bitsize */ | |
1279 | FALSE, /* pc_relative */ | |
1280 | 0, /* bitpos */ | |
1281 | complain_overflow_dont, /* complain_on_overflow */ | |
1282 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1283 | "R_PPC64_PLTGOT16_LO_DS",/* name */ | |
1284 | FALSE, /* partial_inplace */ | |
1285 | 0, /* src_mask */ | |
1286 | 0xfffc, /* dst_mask */ | |
1287 | FALSE), /* pcrel_offset */ | |
1288 | ||
727fc41e | 1289 | /* Marker relocs for TLS. */ |
411e1bfb AM |
1290 | HOWTO (R_PPC64_TLS, |
1291 | 0, /* rightshift */ | |
1292 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1293 | 32, /* bitsize */ | |
1294 | FALSE, /* pc_relative */ | |
1295 | 0, /* bitpos */ | |
1296 | complain_overflow_dont, /* complain_on_overflow */ | |
1297 | bfd_elf_generic_reloc, /* special_function */ | |
1298 | "R_PPC64_TLS", /* name */ | |
1299 | FALSE, /* partial_inplace */ | |
1300 | 0, /* src_mask */ | |
1301 | 0, /* dst_mask */ | |
1302 | FALSE), /* pcrel_offset */ | |
1303 | ||
727fc41e AM |
1304 | HOWTO (R_PPC64_TLSGD, |
1305 | 0, /* rightshift */ | |
1306 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1307 | 32, /* bitsize */ | |
1308 | FALSE, /* pc_relative */ | |
1309 | 0, /* bitpos */ | |
1310 | complain_overflow_dont, /* complain_on_overflow */ | |
1311 | bfd_elf_generic_reloc, /* special_function */ | |
1312 | "R_PPC64_TLSGD", /* name */ | |
1313 | FALSE, /* partial_inplace */ | |
1314 | 0, /* src_mask */ | |
1315 | 0, /* dst_mask */ | |
1316 | FALSE), /* pcrel_offset */ | |
1317 | ||
1318 | HOWTO (R_PPC64_TLSLD, | |
1319 | 0, /* rightshift */ | |
1320 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1321 | 32, /* bitsize */ | |
1322 | FALSE, /* pc_relative */ | |
1323 | 0, /* bitpos */ | |
1324 | complain_overflow_dont, /* complain_on_overflow */ | |
1325 | bfd_elf_generic_reloc, /* special_function */ | |
1326 | "R_PPC64_TLSLD", /* name */ | |
1327 | FALSE, /* partial_inplace */ | |
1328 | 0, /* src_mask */ | |
1329 | 0, /* dst_mask */ | |
1330 | FALSE), /* pcrel_offset */ | |
1331 | ||
3b421ab3 AM |
1332 | HOWTO (R_PPC64_TOCSAVE, |
1333 | 0, /* rightshift */ | |
1334 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1335 | 32, /* bitsize */ | |
1336 | FALSE, /* pc_relative */ | |
1337 | 0, /* bitpos */ | |
1338 | complain_overflow_dont, /* complain_on_overflow */ | |
1339 | bfd_elf_generic_reloc, /* special_function */ | |
1340 | "R_PPC64_TOCSAVE", /* name */ | |
1341 | FALSE, /* partial_inplace */ | |
1342 | 0, /* src_mask */ | |
1343 | 0, /* dst_mask */ | |
1344 | FALSE), /* pcrel_offset */ | |
1345 | ||
411e1bfb AM |
1346 | /* Computes the load module index of the load module that contains the |
1347 | definition of its TLS sym. */ | |
1348 | HOWTO (R_PPC64_DTPMOD64, | |
1349 | 0, /* rightshift */ | |
1350 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
1351 | 64, /* bitsize */ | |
1352 | FALSE, /* pc_relative */ | |
1353 | 0, /* bitpos */ | |
1354 | complain_overflow_dont, /* complain_on_overflow */ | |
1355 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1356 | "R_PPC64_DTPMOD64", /* name */ | |
1357 | FALSE, /* partial_inplace */ | |
1358 | 0, /* src_mask */ | |
1359 | ONES (64), /* dst_mask */ | |
1360 | FALSE), /* pcrel_offset */ | |
1361 | ||
1362 | /* Computes a dtv-relative displacement, the difference between the value | |
1363 | of sym+add and the base address of the thread-local storage block that | |
1364 | contains the definition of sym, minus 0x8000. */ | |
1365 | HOWTO (R_PPC64_DTPREL64, | |
1366 | 0, /* rightshift */ | |
1367 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
1368 | 64, /* bitsize */ | |
1369 | FALSE, /* pc_relative */ | |
1370 | 0, /* bitpos */ | |
1371 | complain_overflow_dont, /* complain_on_overflow */ | |
1372 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1373 | "R_PPC64_DTPREL64", /* name */ | |
1374 | FALSE, /* partial_inplace */ | |
1375 | 0, /* src_mask */ | |
1376 | ONES (64), /* dst_mask */ | |
1377 | FALSE), /* pcrel_offset */ | |
1378 | ||
1379 | /* A 16 bit dtprel reloc. */ | |
1380 | HOWTO (R_PPC64_DTPREL16, | |
1381 | 0, /* rightshift */ | |
1382 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1383 | 16, /* bitsize */ | |
1384 | FALSE, /* pc_relative */ | |
1385 | 0, /* bitpos */ | |
1386 | complain_overflow_signed, /* complain_on_overflow */ | |
1387 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1388 | "R_PPC64_DTPREL16", /* name */ | |
1389 | FALSE, /* partial_inplace */ | |
1390 | 0, /* src_mask */ | |
1391 | 0xffff, /* dst_mask */ | |
1392 | FALSE), /* pcrel_offset */ | |
1393 | ||
1394 | /* Like DTPREL16, but no overflow. */ | |
1395 | HOWTO (R_PPC64_DTPREL16_LO, | |
1396 | 0, /* rightshift */ | |
1397 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1398 | 16, /* bitsize */ | |
1399 | FALSE, /* pc_relative */ | |
1400 | 0, /* bitpos */ | |
1401 | complain_overflow_dont, /* complain_on_overflow */ | |
1402 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1403 | "R_PPC64_DTPREL16_LO", /* name */ | |
1404 | FALSE, /* partial_inplace */ | |
1405 | 0, /* src_mask */ | |
1406 | 0xffff, /* dst_mask */ | |
1407 | FALSE), /* pcrel_offset */ | |
1408 | ||
1409 | /* Like DTPREL16_LO, but next higher group of 16 bits. */ | |
1410 | HOWTO (R_PPC64_DTPREL16_HI, | |
1411 | 16, /* rightshift */ | |
1412 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1413 | 16, /* bitsize */ | |
1414 | FALSE, /* pc_relative */ | |
1415 | 0, /* bitpos */ | |
f9c6b907 | 1416 | complain_overflow_signed, /* complain_on_overflow */ |
411e1bfb AM |
1417 | ppc64_elf_unhandled_reloc, /* special_function */ |
1418 | "R_PPC64_DTPREL16_HI", /* name */ | |
1419 | FALSE, /* partial_inplace */ | |
1420 | 0, /* src_mask */ | |
1421 | 0xffff, /* dst_mask */ | |
1422 | FALSE), /* pcrel_offset */ | |
1423 | ||
1424 | /* Like DTPREL16_HI, but adjust for low 16 bits. */ | |
1425 | HOWTO (R_PPC64_DTPREL16_HA, | |
1426 | 16, /* rightshift */ | |
1427 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1428 | 16, /* bitsize */ | |
1429 | FALSE, /* pc_relative */ | |
1430 | 0, /* bitpos */ | |
f9c6b907 | 1431 | complain_overflow_signed, /* complain_on_overflow */ |
411e1bfb AM |
1432 | ppc64_elf_unhandled_reloc, /* special_function */ |
1433 | "R_PPC64_DTPREL16_HA", /* name */ | |
1434 | FALSE, /* partial_inplace */ | |
1435 | 0, /* src_mask */ | |
1436 | 0xffff, /* dst_mask */ | |
1437 | FALSE), /* pcrel_offset */ | |
1438 | ||
1439 | /* Like DTPREL16_HI, but next higher group of 16 bits. */ | |
1440 | HOWTO (R_PPC64_DTPREL16_HIGHER, | |
1441 | 32, /* rightshift */ | |
1442 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1443 | 16, /* bitsize */ | |
1444 | FALSE, /* pc_relative */ | |
1445 | 0, /* bitpos */ | |
1446 | complain_overflow_dont, /* complain_on_overflow */ | |
1447 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1448 | "R_PPC64_DTPREL16_HIGHER", /* name */ | |
1449 | FALSE, /* partial_inplace */ | |
1450 | 0, /* src_mask */ | |
1451 | 0xffff, /* dst_mask */ | |
1452 | FALSE), /* pcrel_offset */ | |
1453 | ||
1454 | /* Like DTPREL16_HIGHER, but adjust for low 16 bits. */ | |
1455 | HOWTO (R_PPC64_DTPREL16_HIGHERA, | |
1456 | 32, /* rightshift */ | |
1457 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1458 | 16, /* bitsize */ | |
1459 | FALSE, /* pc_relative */ | |
1460 | 0, /* bitpos */ | |
1461 | complain_overflow_dont, /* complain_on_overflow */ | |
1462 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1463 | "R_PPC64_DTPREL16_HIGHERA", /* name */ | |
1464 | FALSE, /* partial_inplace */ | |
1465 | 0, /* src_mask */ | |
1466 | 0xffff, /* dst_mask */ | |
1467 | FALSE), /* pcrel_offset */ | |
1468 | ||
1469 | /* Like DTPREL16_HIGHER, but next higher group of 16 bits. */ | |
1470 | HOWTO (R_PPC64_DTPREL16_HIGHEST, | |
1471 | 48, /* rightshift */ | |
1472 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1473 | 16, /* bitsize */ | |
1474 | FALSE, /* pc_relative */ | |
1475 | 0, /* bitpos */ | |
1476 | complain_overflow_dont, /* complain_on_overflow */ | |
1477 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1478 | "R_PPC64_DTPREL16_HIGHEST", /* name */ | |
1479 | FALSE, /* partial_inplace */ | |
1480 | 0, /* src_mask */ | |
1481 | 0xffff, /* dst_mask */ | |
1482 | FALSE), /* pcrel_offset */ | |
1483 | ||
1484 | /* Like DTPREL16_HIGHEST, but adjust for low 16 bits. */ | |
1485 | HOWTO (R_PPC64_DTPREL16_HIGHESTA, | |
1486 | 48, /* rightshift */ | |
1487 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1488 | 16, /* bitsize */ | |
1489 | FALSE, /* pc_relative */ | |
1490 | 0, /* bitpos */ | |
1491 | complain_overflow_dont, /* complain_on_overflow */ | |
1492 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1493 | "R_PPC64_DTPREL16_HIGHESTA", /* name */ | |
1494 | FALSE, /* partial_inplace */ | |
1495 | 0, /* src_mask */ | |
1496 | 0xffff, /* dst_mask */ | |
1497 | FALSE), /* pcrel_offset */ | |
1498 | ||
1499 | /* Like DTPREL16, but for insns with a DS field. */ | |
1500 | HOWTO (R_PPC64_DTPREL16_DS, | |
1501 | 0, /* rightshift */ | |
1502 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1503 | 16, /* bitsize */ | |
1504 | FALSE, /* pc_relative */ | |
1505 | 0, /* bitpos */ | |
1506 | complain_overflow_signed, /* complain_on_overflow */ | |
1507 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1508 | "R_PPC64_DTPREL16_DS", /* name */ | |
1509 | FALSE, /* partial_inplace */ | |
1510 | 0, /* src_mask */ | |
1511 | 0xfffc, /* dst_mask */ | |
1512 | FALSE), /* pcrel_offset */ | |
1513 | ||
1514 | /* Like DTPREL16_DS, but no overflow. */ | |
1515 | HOWTO (R_PPC64_DTPREL16_LO_DS, | |
1516 | 0, /* rightshift */ | |
1517 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1518 | 16, /* bitsize */ | |
1519 | FALSE, /* pc_relative */ | |
1520 | 0, /* bitpos */ | |
1521 | complain_overflow_dont, /* complain_on_overflow */ | |
1522 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1523 | "R_PPC64_DTPREL16_LO_DS", /* name */ | |
1524 | FALSE, /* partial_inplace */ | |
1525 | 0, /* src_mask */ | |
1526 | 0xfffc, /* dst_mask */ | |
1527 | FALSE), /* pcrel_offset */ | |
1528 | ||
1529 | /* Computes a tp-relative displacement, the difference between the value of | |
1530 | sym+add and the value of the thread pointer (r13). */ | |
1531 | HOWTO (R_PPC64_TPREL64, | |
1532 | 0, /* rightshift */ | |
1533 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
1534 | 64, /* bitsize */ | |
1535 | FALSE, /* pc_relative */ | |
1536 | 0, /* bitpos */ | |
1537 | complain_overflow_dont, /* complain_on_overflow */ | |
1538 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1539 | "R_PPC64_TPREL64", /* name */ | |
1540 | FALSE, /* partial_inplace */ | |
1541 | 0, /* src_mask */ | |
1542 | ONES (64), /* dst_mask */ | |
1543 | FALSE), /* pcrel_offset */ | |
1544 | ||
1545 | /* A 16 bit tprel reloc. */ | |
1546 | HOWTO (R_PPC64_TPREL16, | |
1547 | 0, /* rightshift */ | |
1548 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1549 | 16, /* bitsize */ | |
1550 | FALSE, /* pc_relative */ | |
1551 | 0, /* bitpos */ | |
1552 | complain_overflow_signed, /* complain_on_overflow */ | |
1553 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1554 | "R_PPC64_TPREL16", /* name */ | |
1555 | FALSE, /* partial_inplace */ | |
1556 | 0, /* src_mask */ | |
1557 | 0xffff, /* dst_mask */ | |
1558 | FALSE), /* pcrel_offset */ | |
1559 | ||
1560 | /* Like TPREL16, but no overflow. */ | |
1561 | HOWTO (R_PPC64_TPREL16_LO, | |
1562 | 0, /* rightshift */ | |
1563 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1564 | 16, /* bitsize */ | |
1565 | FALSE, /* pc_relative */ | |
1566 | 0, /* bitpos */ | |
1567 | complain_overflow_dont, /* complain_on_overflow */ | |
1568 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1569 | "R_PPC64_TPREL16_LO", /* name */ | |
1570 | FALSE, /* partial_inplace */ | |
1571 | 0, /* src_mask */ | |
1572 | 0xffff, /* dst_mask */ | |
1573 | FALSE), /* pcrel_offset */ | |
1574 | ||
1575 | /* Like TPREL16_LO, but next higher group of 16 bits. */ | |
1576 | HOWTO (R_PPC64_TPREL16_HI, | |
1577 | 16, /* rightshift */ | |
1578 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1579 | 16, /* bitsize */ | |
1580 | FALSE, /* pc_relative */ | |
1581 | 0, /* bitpos */ | |
f9c6b907 | 1582 | complain_overflow_signed, /* complain_on_overflow */ |
411e1bfb AM |
1583 | ppc64_elf_unhandled_reloc, /* special_function */ |
1584 | "R_PPC64_TPREL16_HI", /* name */ | |
1585 | FALSE, /* partial_inplace */ | |
1586 | 0, /* src_mask */ | |
1587 | 0xffff, /* dst_mask */ | |
1588 | FALSE), /* pcrel_offset */ | |
1589 | ||
1590 | /* Like TPREL16_HI, but adjust for low 16 bits. */ | |
1591 | HOWTO (R_PPC64_TPREL16_HA, | |
1592 | 16, /* rightshift */ | |
1593 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1594 | 16, /* bitsize */ | |
1595 | FALSE, /* pc_relative */ | |
1596 | 0, /* bitpos */ | |
f9c6b907 | 1597 | complain_overflow_signed, /* complain_on_overflow */ |
411e1bfb AM |
1598 | ppc64_elf_unhandled_reloc, /* special_function */ |
1599 | "R_PPC64_TPREL16_HA", /* name */ | |
1600 | FALSE, /* partial_inplace */ | |
1601 | 0, /* src_mask */ | |
1602 | 0xffff, /* dst_mask */ | |
1603 | FALSE), /* pcrel_offset */ | |
1604 | ||
1605 | /* Like TPREL16_HI, but next higher group of 16 bits. */ | |
1606 | HOWTO (R_PPC64_TPREL16_HIGHER, | |
1607 | 32, /* rightshift */ | |
1608 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1609 | 16, /* bitsize */ | |
1610 | FALSE, /* pc_relative */ | |
1611 | 0, /* bitpos */ | |
1612 | complain_overflow_dont, /* complain_on_overflow */ | |
1613 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1614 | "R_PPC64_TPREL16_HIGHER", /* name */ | |
1615 | FALSE, /* partial_inplace */ | |
1616 | 0, /* src_mask */ | |
1617 | 0xffff, /* dst_mask */ | |
1618 | FALSE), /* pcrel_offset */ | |
1619 | ||
1620 | /* Like TPREL16_HIGHER, but adjust for low 16 bits. */ | |
1621 | HOWTO (R_PPC64_TPREL16_HIGHERA, | |
1622 | 32, /* rightshift */ | |
1623 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1624 | 16, /* bitsize */ | |
1625 | FALSE, /* pc_relative */ | |
1626 | 0, /* bitpos */ | |
1627 | complain_overflow_dont, /* complain_on_overflow */ | |
1628 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1629 | "R_PPC64_TPREL16_HIGHERA", /* name */ | |
1630 | FALSE, /* partial_inplace */ | |
1631 | 0, /* src_mask */ | |
1632 | 0xffff, /* dst_mask */ | |
1633 | FALSE), /* pcrel_offset */ | |
1634 | ||
1635 | /* Like TPREL16_HIGHER, but next higher group of 16 bits. */ | |
1636 | HOWTO (R_PPC64_TPREL16_HIGHEST, | |
1637 | 48, /* rightshift */ | |
1638 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1639 | 16, /* bitsize */ | |
1640 | FALSE, /* pc_relative */ | |
1641 | 0, /* bitpos */ | |
1642 | complain_overflow_dont, /* complain_on_overflow */ | |
1643 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1644 | "R_PPC64_TPREL16_HIGHEST", /* name */ | |
1645 | FALSE, /* partial_inplace */ | |
1646 | 0, /* src_mask */ | |
1647 | 0xffff, /* dst_mask */ | |
1648 | FALSE), /* pcrel_offset */ | |
1649 | ||
1650 | /* Like TPREL16_HIGHEST, but adjust for low 16 bits. */ | |
1651 | HOWTO (R_PPC64_TPREL16_HIGHESTA, | |
1652 | 48, /* rightshift */ | |
1653 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1654 | 16, /* bitsize */ | |
1655 | FALSE, /* pc_relative */ | |
1656 | 0, /* bitpos */ | |
1657 | complain_overflow_dont, /* complain_on_overflow */ | |
1658 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1659 | "R_PPC64_TPREL16_HIGHESTA", /* name */ | |
1660 | FALSE, /* partial_inplace */ | |
1661 | 0, /* src_mask */ | |
1662 | 0xffff, /* dst_mask */ | |
1663 | FALSE), /* pcrel_offset */ | |
1664 | ||
1665 | /* Like TPREL16, but for insns with a DS field. */ | |
1666 | HOWTO (R_PPC64_TPREL16_DS, | |
1667 | 0, /* rightshift */ | |
1668 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1669 | 16, /* bitsize */ | |
1670 | FALSE, /* pc_relative */ | |
1671 | 0, /* bitpos */ | |
1672 | complain_overflow_signed, /* complain_on_overflow */ | |
1673 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1674 | "R_PPC64_TPREL16_DS", /* name */ | |
1675 | FALSE, /* partial_inplace */ | |
1676 | 0, /* src_mask */ | |
1677 | 0xfffc, /* dst_mask */ | |
1678 | FALSE), /* pcrel_offset */ | |
1679 | ||
1680 | /* Like TPREL16_DS, but no overflow. */ | |
1681 | HOWTO (R_PPC64_TPREL16_LO_DS, | |
1682 | 0, /* rightshift */ | |
1683 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1684 | 16, /* bitsize */ | |
1685 | FALSE, /* pc_relative */ | |
1686 | 0, /* bitpos */ | |
1687 | complain_overflow_dont, /* complain_on_overflow */ | |
1688 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1689 | "R_PPC64_TPREL16_LO_DS", /* name */ | |
1690 | FALSE, /* partial_inplace */ | |
1691 | 0, /* src_mask */ | |
1692 | 0xfffc, /* dst_mask */ | |
1693 | FALSE), /* pcrel_offset */ | |
1694 | ||
1695 | /* Allocates two contiguous entries in the GOT to hold a tls_index structure, | |
1696 | with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset | |
1697 | to the first entry relative to the TOC base (r2). */ | |
1698 | HOWTO (R_PPC64_GOT_TLSGD16, | |
1699 | 0, /* rightshift */ | |
1700 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1701 | 16, /* bitsize */ | |
1702 | FALSE, /* pc_relative */ | |
1703 | 0, /* bitpos */ | |
1704 | complain_overflow_signed, /* complain_on_overflow */ | |
1705 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1706 | "R_PPC64_GOT_TLSGD16", /* name */ | |
b34976b6 | 1707 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1708 | 0, /* src_mask */ |
1709 | 0xffff, /* dst_mask */ | |
b34976b6 | 1710 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1711 | |
411e1bfb AM |
1712 | /* Like GOT_TLSGD16, but no overflow. */ |
1713 | HOWTO (R_PPC64_GOT_TLSGD16_LO, | |
5bd4f169 AM |
1714 | 0, /* rightshift */ |
1715 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1716 | 16, /* bitsize */ | |
b34976b6 | 1717 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1718 | 0, /* bitpos */ |
1719 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 1720 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1721 | "R_PPC64_GOT_TLSGD16_LO", /* name */ |
b34976b6 | 1722 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1723 | 0, /* src_mask */ |
1724 | 0xffff, /* dst_mask */ | |
b34976b6 | 1725 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1726 | |
411e1bfb AM |
1727 | /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */ |
1728 | HOWTO (R_PPC64_GOT_TLSGD16_HI, | |
5bd4f169 AM |
1729 | 16, /* rightshift */ |
1730 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1731 | 16, /* bitsize */ | |
b34976b6 | 1732 | FALSE, /* pc_relative */ |
5bd4f169 | 1733 | 0, /* bitpos */ |
f9c6b907 | 1734 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 1735 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1736 | "R_PPC64_GOT_TLSGD16_HI", /* name */ |
b34976b6 | 1737 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1738 | 0, /* src_mask */ |
1739 | 0xffff, /* dst_mask */ | |
b34976b6 | 1740 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1741 | |
411e1bfb AM |
1742 | /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */ |
1743 | HOWTO (R_PPC64_GOT_TLSGD16_HA, | |
5bd4f169 AM |
1744 | 16, /* rightshift */ |
1745 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1746 | 16, /* bitsize */ | |
b34976b6 | 1747 | FALSE, /* pc_relative */ |
5bd4f169 | 1748 | 0, /* bitpos */ |
f9c6b907 | 1749 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 1750 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1751 | "R_PPC64_GOT_TLSGD16_HA", /* name */ |
b34976b6 | 1752 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1753 | 0, /* src_mask */ |
1754 | 0xffff, /* dst_mask */ | |
b34976b6 | 1755 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1756 | |
411e1bfb AM |
1757 | /* Allocates two contiguous entries in the GOT to hold a tls_index structure, |
1758 | with values (sym+add)@dtpmod and zero, and computes the offset to the | |
1759 | first entry relative to the TOC base (r2). */ | |
1760 | HOWTO (R_PPC64_GOT_TLSLD16, | |
5bd4f169 AM |
1761 | 0, /* rightshift */ |
1762 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1763 | 16, /* bitsize */ | |
b34976b6 | 1764 | FALSE, /* pc_relative */ |
5bd4f169 | 1765 | 0, /* bitpos */ |
411e1bfb AM |
1766 | complain_overflow_signed, /* complain_on_overflow */ |
1767 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1768 | "R_PPC64_GOT_TLSLD16", /* name */ | |
b34976b6 | 1769 | FALSE, /* partial_inplace */ |
d006db6c | 1770 | 0, /* src_mask */ |
411e1bfb | 1771 | 0xffff, /* dst_mask */ |
b34976b6 | 1772 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1773 | |
411e1bfb AM |
1774 | /* Like GOT_TLSLD16, but no overflow. */ |
1775 | HOWTO (R_PPC64_GOT_TLSLD16_LO, | |
5bd4f169 AM |
1776 | 0, /* rightshift */ |
1777 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1778 | 16, /* bitsize */ | |
b34976b6 | 1779 | FALSE, /* pc_relative */ |
5bd4f169 | 1780 | 0, /* bitpos */ |
411e1bfb AM |
1781 | complain_overflow_dont, /* complain_on_overflow */ |
1782 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1783 | "R_PPC64_GOT_TLSLD16_LO", /* name */ | |
b34976b6 | 1784 | FALSE, /* partial_inplace */ |
d006db6c | 1785 | 0, /* src_mask */ |
411e1bfb | 1786 | 0xffff, /* dst_mask */ |
b34976b6 | 1787 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1788 | |
411e1bfb AM |
1789 | /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */ |
1790 | HOWTO (R_PPC64_GOT_TLSLD16_HI, | |
1791 | 16, /* rightshift */ | |
5bd4f169 AM |
1792 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1793 | 16, /* bitsize */ | |
b34976b6 | 1794 | FALSE, /* pc_relative */ |
5bd4f169 | 1795 | 0, /* bitpos */ |
f9c6b907 | 1796 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 1797 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1798 | "R_PPC64_GOT_TLSLD16_HI", /* name */ |
b34976b6 | 1799 | FALSE, /* partial_inplace */ |
d006db6c | 1800 | 0, /* src_mask */ |
411e1bfb | 1801 | 0xffff, /* dst_mask */ |
b34976b6 | 1802 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1803 | |
411e1bfb AM |
1804 | /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */ |
1805 | HOWTO (R_PPC64_GOT_TLSLD16_HA, | |
1806 | 16, /* rightshift */ | |
5bd4f169 AM |
1807 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1808 | 16, /* bitsize */ | |
b34976b6 | 1809 | FALSE, /* pc_relative */ |
5bd4f169 | 1810 | 0, /* bitpos */ |
f9c6b907 | 1811 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 1812 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1813 | "R_PPC64_GOT_TLSLD16_HA", /* name */ |
b34976b6 | 1814 | FALSE, /* partial_inplace */ |
d006db6c | 1815 | 0, /* src_mask */ |
411e1bfb | 1816 | 0xffff, /* dst_mask */ |
b34976b6 | 1817 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1818 | |
411e1bfb AM |
1819 | /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes |
1820 | the offset to the entry relative to the TOC base (r2). */ | |
1821 | HOWTO (R_PPC64_GOT_DTPREL16_DS, | |
5bd4f169 AM |
1822 | 0, /* rightshift */ |
1823 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1824 | 16, /* bitsize */ | |
b34976b6 | 1825 | FALSE, /* pc_relative */ |
5bd4f169 | 1826 | 0, /* bitpos */ |
411e1bfb | 1827 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 1828 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1829 | "R_PPC64_GOT_DTPREL16_DS", /* name */ |
b34976b6 | 1830 | FALSE, /* partial_inplace */ |
d006db6c | 1831 | 0, /* src_mask */ |
5bd4f169 | 1832 | 0xfffc, /* dst_mask */ |
b34976b6 | 1833 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1834 | |
411e1bfb AM |
1835 | /* Like GOT_DTPREL16_DS, but no overflow. */ |
1836 | HOWTO (R_PPC64_GOT_DTPREL16_LO_DS, | |
5bd4f169 | 1837 | 0, /* rightshift */ |
c061c2d8 AM |
1838 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1839 | 16, /* bitsize */ | |
b34976b6 | 1840 | FALSE, /* pc_relative */ |
5bd4f169 | 1841 | 0, /* bitpos */ |
411e1bfb AM |
1842 | complain_overflow_dont, /* complain_on_overflow */ |
1843 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1844 | "R_PPC64_GOT_DTPREL16_LO_DS", /* name */ | |
b34976b6 | 1845 | FALSE, /* partial_inplace */ |
d006db6c | 1846 | 0, /* src_mask */ |
c061c2d8 | 1847 | 0xfffc, /* dst_mask */ |
b34976b6 | 1848 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1849 | |
411e1bfb AM |
1850 | /* Like GOT_DTPREL16_LO_DS, but next higher group of 16 bits. */ |
1851 | HOWTO (R_PPC64_GOT_DTPREL16_HI, | |
1852 | 16, /* rightshift */ | |
5bd4f169 AM |
1853 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1854 | 16, /* bitsize */ | |
b34976b6 | 1855 | FALSE, /* pc_relative */ |
5bd4f169 | 1856 | 0, /* bitpos */ |
f9c6b907 | 1857 | complain_overflow_signed, /* complain_on_overflow */ |
411e1bfb AM |
1858 | ppc64_elf_unhandled_reloc, /* special_function */ |
1859 | "R_PPC64_GOT_DTPREL16_HI", /* name */ | |
b34976b6 | 1860 | FALSE, /* partial_inplace */ |
d006db6c | 1861 | 0, /* src_mask */ |
411e1bfb | 1862 | 0xffff, /* dst_mask */ |
b34976b6 | 1863 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1864 | |
411e1bfb AM |
1865 | /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */ |
1866 | HOWTO (R_PPC64_GOT_DTPREL16_HA, | |
1867 | 16, /* rightshift */ | |
1868 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1869 | 16, /* bitsize */ | |
1870 | FALSE, /* pc_relative */ | |
1871 | 0, /* bitpos */ | |
f9c6b907 | 1872 | complain_overflow_signed, /* complain_on_overflow */ |
411e1bfb AM |
1873 | ppc64_elf_unhandled_reloc, /* special_function */ |
1874 | "R_PPC64_GOT_DTPREL16_HA", /* name */ | |
1875 | FALSE, /* partial_inplace */ | |
1876 | 0, /* src_mask */ | |
1877 | 0xffff, /* dst_mask */ | |
1878 | FALSE), /* pcrel_offset */ | |
1879 | ||
1880 | /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the | |
1881 | offset to the entry relative to the TOC base (r2). */ | |
1882 | HOWTO (R_PPC64_GOT_TPREL16_DS, | |
5bd4f169 AM |
1883 | 0, /* rightshift */ |
1884 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1885 | 16, /* bitsize */ | |
b34976b6 | 1886 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1887 | 0, /* bitpos */ |
1888 | complain_overflow_signed, /* complain_on_overflow */ | |
411e1bfb AM |
1889 | ppc64_elf_unhandled_reloc, /* special_function */ |
1890 | "R_PPC64_GOT_TPREL16_DS", /* name */ | |
b34976b6 | 1891 | FALSE, /* partial_inplace */ |
d006db6c | 1892 | 0, /* src_mask */ |
ad8e1ba5 | 1893 | 0xfffc, /* dst_mask */ |
b34976b6 | 1894 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1895 | |
411e1bfb AM |
1896 | /* Like GOT_TPREL16_DS, but no overflow. */ |
1897 | HOWTO (R_PPC64_GOT_TPREL16_LO_DS, | |
5bd4f169 AM |
1898 | 0, /* rightshift */ |
1899 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1900 | 16, /* bitsize */ | |
b34976b6 | 1901 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1902 | 0, /* bitpos */ |
1903 | complain_overflow_dont, /* complain_on_overflow */ | |
411e1bfb AM |
1904 | ppc64_elf_unhandled_reloc, /* special_function */ |
1905 | "R_PPC64_GOT_TPREL16_LO_DS", /* name */ | |
b34976b6 | 1906 | FALSE, /* partial_inplace */ |
d006db6c | 1907 | 0, /* src_mask */ |
ad8e1ba5 | 1908 | 0xfffc, /* dst_mask */ |
b34976b6 | 1909 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1910 | |
411e1bfb AM |
1911 | /* Like GOT_TPREL16_LO_DS, but next higher group of 16 bits. */ |
1912 | HOWTO (R_PPC64_GOT_TPREL16_HI, | |
1913 | 16, /* rightshift */ | |
5bd4f169 AM |
1914 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1915 | 16, /* bitsize */ | |
b34976b6 | 1916 | FALSE, /* pc_relative */ |
5bd4f169 | 1917 | 0, /* bitpos */ |
f9c6b907 | 1918 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 1919 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1920 | "R_PPC64_GOT_TPREL16_HI", /* name */ |
b34976b6 | 1921 | FALSE, /* partial_inplace */ |
d006db6c | 1922 | 0, /* src_mask */ |
411e1bfb | 1923 | 0xffff, /* dst_mask */ |
b34976b6 | 1924 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1925 | |
411e1bfb AM |
1926 | /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */ |
1927 | HOWTO (R_PPC64_GOT_TPREL16_HA, | |
1928 | 16, /* rightshift */ | |
5bd4f169 AM |
1929 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1930 | 16, /* bitsize */ | |
b34976b6 | 1931 | FALSE, /* pc_relative */ |
5bd4f169 | 1932 | 0, /* bitpos */ |
f9c6b907 | 1933 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 1934 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1935 | "R_PPC64_GOT_TPREL16_HA", /* name */ |
b34976b6 | 1936 | FALSE, /* partial_inplace */ |
d006db6c | 1937 | 0, /* src_mask */ |
411e1bfb | 1938 | 0xffff, /* dst_mask */ |
b34976b6 | 1939 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1940 | |
25f23106 AM |
1941 | HOWTO (R_PPC64_JMP_IREL, /* type */ |
1942 | 0, /* rightshift */ | |
1943 | 0, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
1944 | 0, /* bitsize */ | |
1945 | FALSE, /* pc_relative */ | |
1946 | 0, /* bitpos */ | |
1947 | complain_overflow_dont, /* complain_on_overflow */ | |
1948 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1949 | "R_PPC64_JMP_IREL", /* name */ | |
1950 | FALSE, /* partial_inplace */ | |
1951 | 0, /* src_mask */ | |
1952 | 0, /* dst_mask */ | |
1953 | FALSE), /* pcrel_offset */ | |
1954 | ||
e054468f AM |
1955 | HOWTO (R_PPC64_IRELATIVE, /* type */ |
1956 | 0, /* rightshift */ | |
1957 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
1958 | 64, /* bitsize */ | |
1959 | FALSE, /* pc_relative */ | |
1960 | 0, /* bitpos */ | |
1961 | complain_overflow_dont, /* complain_on_overflow */ | |
1962 | bfd_elf_generic_reloc, /* special_function */ | |
1963 | "R_PPC64_IRELATIVE", /* name */ | |
1964 | FALSE, /* partial_inplace */ | |
1965 | 0, /* src_mask */ | |
1966 | ONES (64), /* dst_mask */ | |
1967 | FALSE), /* pcrel_offset */ | |
1968 | ||
25f23106 AM |
1969 | /* A 16 bit relative relocation. */ |
1970 | HOWTO (R_PPC64_REL16, /* type */ | |
1971 | 0, /* rightshift */ | |
1972 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1973 | 16, /* bitsize */ | |
1974 | TRUE, /* pc_relative */ | |
1975 | 0, /* bitpos */ | |
b80eed39 | 1976 | complain_overflow_signed, /* complain_on_overflow */ |
25f23106 AM |
1977 | bfd_elf_generic_reloc, /* special_function */ |
1978 | "R_PPC64_REL16", /* name */ | |
1979 | FALSE, /* partial_inplace */ | |
1980 | 0, /* src_mask */ | |
1981 | 0xffff, /* dst_mask */ | |
1982 | TRUE), /* pcrel_offset */ | |
1983 | ||
1984 | /* A 16 bit relative relocation without overflow. */ | |
1985 | HOWTO (R_PPC64_REL16_LO, /* type */ | |
1986 | 0, /* rightshift */ | |
1987 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1988 | 16, /* bitsize */ | |
1989 | TRUE, /* pc_relative */ | |
1990 | 0, /* bitpos */ | |
1991 | complain_overflow_dont,/* complain_on_overflow */ | |
1992 | bfd_elf_generic_reloc, /* special_function */ | |
1993 | "R_PPC64_REL16_LO", /* name */ | |
1994 | FALSE, /* partial_inplace */ | |
1995 | 0, /* src_mask */ | |
1996 | 0xffff, /* dst_mask */ | |
1997 | TRUE), /* pcrel_offset */ | |
1998 | ||
1999 | /* The high order 16 bits of a relative address. */ | |
2000 | HOWTO (R_PPC64_REL16_HI, /* type */ | |
2001 | 16, /* rightshift */ | |
2002 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
2003 | 16, /* bitsize */ | |
2004 | TRUE, /* pc_relative */ | |
2005 | 0, /* bitpos */ | |
f9c6b907 | 2006 | complain_overflow_signed, /* complain_on_overflow */ |
25f23106 AM |
2007 | bfd_elf_generic_reloc, /* special_function */ |
2008 | "R_PPC64_REL16_HI", /* name */ | |
2009 | FALSE, /* partial_inplace */ | |
2010 | 0, /* src_mask */ | |
2011 | 0xffff, /* dst_mask */ | |
2012 | TRUE), /* pcrel_offset */ | |
2013 | ||
2014 | /* The high order 16 bits of a relative address, plus 1 if the contents of | |
2015 | the low 16 bits, treated as a signed number, is negative. */ | |
2016 | HOWTO (R_PPC64_REL16_HA, /* type */ | |
2017 | 16, /* rightshift */ | |
2018 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
2019 | 16, /* bitsize */ | |
2020 | TRUE, /* pc_relative */ | |
2021 | 0, /* bitpos */ | |
f9c6b907 | 2022 | complain_overflow_signed, /* complain_on_overflow */ |
25f23106 AM |
2023 | ppc64_elf_ha_reloc, /* special_function */ |
2024 | "R_PPC64_REL16_HA", /* name */ | |
2025 | FALSE, /* partial_inplace */ | |
2026 | 0, /* src_mask */ | |
2027 | 0xffff, /* dst_mask */ | |
2028 | TRUE), /* pcrel_offset */ | |
2029 | ||
a680de9a PB |
2030 | /* Like R_PPC64_REL16_HA but for split field in addpcis. */ |
2031 | HOWTO (R_PPC64_REL16DX_HA, /* type */ | |
2032 | 16, /* rightshift */ | |
2033 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
2034 | 16, /* bitsize */ | |
2035 | TRUE, /* pc_relative */ | |
2036 | 0, /* bitpos */ | |
2037 | complain_overflow_signed, /* complain_on_overflow */ | |
2038 | ppc64_elf_ha_reloc, /* special_function */ | |
2039 | "R_PPC64_REL16DX_HA", /* name */ | |
2040 | FALSE, /* partial_inplace */ | |
2041 | 0, /* src_mask */ | |
2042 | 0x1fffc1, /* dst_mask */ | |
2043 | TRUE), /* pcrel_offset */ | |
2044 | ||
f9c6b907 AM |
2045 | /* Like R_PPC64_ADDR16_HI, but no overflow. */ |
2046 | HOWTO (R_PPC64_ADDR16_HIGH, /* type */ | |
2047 | 16, /* rightshift */ | |
2048 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
2049 | 16, /* bitsize */ | |
2050 | FALSE, /* pc_relative */ | |
2051 | 0, /* bitpos */ | |
2052 | complain_overflow_dont, /* complain_on_overflow */ | |
2053 | bfd_elf_generic_reloc, /* special_function */ | |
2054 | "R_PPC64_ADDR16_HIGH", /* name */ | |
2055 | FALSE, /* partial_inplace */ | |
2056 | 0, /* src_mask */ | |
2057 | 0xffff, /* dst_mask */ | |
2058 | FALSE), /* pcrel_offset */ | |
2059 | ||
2060 | /* Like R_PPC64_ADDR16_HA, but no overflow. */ | |
2061 | HOWTO (R_PPC64_ADDR16_HIGHA, /* type */ | |
2062 | 16, /* rightshift */ | |
2063 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
2064 | 16, /* bitsize */ | |
2065 | FALSE, /* pc_relative */ | |
2066 | 0, /* bitpos */ | |
2067 | complain_overflow_dont, /* complain_on_overflow */ | |
2068 | ppc64_elf_ha_reloc, /* special_function */ | |
2069 | "R_PPC64_ADDR16_HIGHA", /* name */ | |
2070 | FALSE, /* partial_inplace */ | |
2071 | 0, /* src_mask */ | |
2072 | 0xffff, /* dst_mask */ | |
2073 | FALSE), /* pcrel_offset */ | |
2074 | ||
2075 | /* Like R_PPC64_DTPREL16_HI, but no overflow. */ | |
2076 | HOWTO (R_PPC64_DTPREL16_HIGH, | |
2077 | 16, /* rightshift */ | |
2078 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
2079 | 16, /* bitsize */ | |
2080 | FALSE, /* pc_relative */ | |
2081 | 0, /* bitpos */ | |
2082 | complain_overflow_dont, /* complain_on_overflow */ | |
2083 | ppc64_elf_unhandled_reloc, /* special_function */ | |
2084 | "R_PPC64_DTPREL16_HIGH", /* name */ | |
2085 | FALSE, /* partial_inplace */ | |
2086 | 0, /* src_mask */ | |
2087 | 0xffff, /* dst_mask */ | |
2088 | FALSE), /* pcrel_offset */ | |
2089 | ||
2090 | /* Like R_PPC64_DTPREL16_HA, but no overflow. */ | |
2091 | HOWTO (R_PPC64_DTPREL16_HIGHA, | |
2092 | 16, /* rightshift */ | |
2093 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
2094 | 16, /* bitsize */ | |
2095 | FALSE, /* pc_relative */ | |
2096 | 0, /* bitpos */ | |
2097 | complain_overflow_dont, /* complain_on_overflow */ | |
2098 | ppc64_elf_unhandled_reloc, /* special_function */ | |
2099 | "R_PPC64_DTPREL16_HIGHA", /* name */ | |
2100 | FALSE, /* partial_inplace */ | |
2101 | 0, /* src_mask */ | |
2102 | 0xffff, /* dst_mask */ | |
2103 | FALSE), /* pcrel_offset */ | |
2104 | ||
2105 | /* Like R_PPC64_TPREL16_HI, but no overflow. */ | |
2106 | HOWTO (R_PPC64_TPREL16_HIGH, | |
2107 | 16, /* rightshift */ | |
2108 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
2109 | 16, /* bitsize */ | |
2110 | FALSE, /* pc_relative */ | |
2111 | 0, /* bitpos */ | |
2112 | complain_overflow_dont, /* complain_on_overflow */ | |
2113 | ppc64_elf_unhandled_reloc, /* special_function */ | |
2114 | "R_PPC64_TPREL16_HIGH", /* name */ | |
2115 | FALSE, /* partial_inplace */ | |
2116 | 0, /* src_mask */ | |
2117 | 0xffff, /* dst_mask */ | |
2118 | FALSE), /* pcrel_offset */ | |
2119 | ||
2120 | /* Like R_PPC64_TPREL16_HA, but no overflow. */ | |
2121 | HOWTO (R_PPC64_TPREL16_HIGHA, | |
2122 | 16, /* rightshift */ | |
2123 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
2124 | 16, /* bitsize */ | |
2125 | FALSE, /* pc_relative */ | |
2126 | 0, /* bitpos */ | |
2127 | complain_overflow_dont, /* complain_on_overflow */ | |
2128 | ppc64_elf_unhandled_reloc, /* special_function */ | |
2129 | "R_PPC64_TPREL16_HIGHA", /* name */ | |
2130 | FALSE, /* partial_inplace */ | |
2131 | 0, /* src_mask */ | |
2132 | 0xffff, /* dst_mask */ | |
2133 | FALSE), /* pcrel_offset */ | |
2134 | ||
006589cf AM |
2135 | /* Marker reloc on ELFv2 large-model function entry. */ |
2136 | HOWTO (R_PPC64_ENTRY, | |
2137 | 0, /* rightshift */ | |
2138 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
2139 | 32, /* bitsize */ | |
2140 | FALSE, /* pc_relative */ | |
2141 | 0, /* bitpos */ | |
2142 | complain_overflow_dont, /* complain_on_overflow */ | |
2143 | bfd_elf_generic_reloc, /* special_function */ | |
2144 | "R_PPC64_ENTRY", /* name */ | |
2145 | FALSE, /* partial_inplace */ | |
2146 | 0, /* src_mask */ | |
2147 | 0, /* dst_mask */ | |
2148 | FALSE), /* pcrel_offset */ | |
2149 | ||
45965137 AM |
2150 | /* Like ADDR64, but use local entry point of function. */ |
2151 | HOWTO (R_PPC64_ADDR64_LOCAL, /* type */ | |
2152 | 0, /* rightshift */ | |
2153 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
2154 | 64, /* bitsize */ | |
2155 | FALSE, /* pc_relative */ | |
2156 | 0, /* bitpos */ | |
2157 | complain_overflow_dont, /* complain_on_overflow */ | |
2158 | bfd_elf_generic_reloc, /* special_function */ | |
2159 | "R_PPC64_ADDR64_LOCAL", /* name */ | |
2160 | FALSE, /* partial_inplace */ | |
2161 | 0, /* src_mask */ | |
2162 | ONES (64), /* dst_mask */ | |
2163 | FALSE), /* pcrel_offset */ | |
2164 | ||
5bd4f169 AM |
2165 | /* GNU extension to record C++ vtable hierarchy. */ |
2166 | HOWTO (R_PPC64_GNU_VTINHERIT, /* type */ | |
2167 | 0, /* rightshift */ | |
2168 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
2169 | 0, /* bitsize */ | |
b34976b6 | 2170 | FALSE, /* pc_relative */ |
5bd4f169 AM |
2171 | 0, /* bitpos */ |
2172 | complain_overflow_dont, /* complain_on_overflow */ | |
2173 | NULL, /* special_function */ | |
2174 | "R_PPC64_GNU_VTINHERIT", /* name */ | |
b34976b6 | 2175 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
2176 | 0, /* src_mask */ |
2177 | 0, /* dst_mask */ | |
b34976b6 | 2178 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
2179 | |
2180 | /* GNU extension to record C++ vtable member usage. */ | |
2181 | HOWTO (R_PPC64_GNU_VTENTRY, /* type */ | |
2182 | 0, /* rightshift */ | |
2183 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
2184 | 0, /* bitsize */ | |
b34976b6 | 2185 | FALSE, /* pc_relative */ |
5bd4f169 AM |
2186 | 0, /* bitpos */ |
2187 | complain_overflow_dont, /* complain_on_overflow */ | |
2188 | NULL, /* special_function */ | |
2189 | "R_PPC64_GNU_VTENTRY", /* name */ | |
b34976b6 | 2190 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
2191 | 0, /* src_mask */ |
2192 | 0, /* dst_mask */ | |
b34976b6 | 2193 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
2194 | }; |
2195 | ||
2196 | \f | |
2197 | /* Initialize the ppc64_elf_howto_table, so that linear accesses can | |
2198 | be done. */ | |
2199 | ||
2200 | static void | |
4ce794b7 | 2201 | ppc_howto_init (void) |
5bd4f169 AM |
2202 | { |
2203 | unsigned int i, type; | |
2204 | ||
a4b6fadd | 2205 | for (i = 0; i < ARRAY_SIZE (ppc64_elf_howto_raw); i++) |
5bd4f169 AM |
2206 | { |
2207 | type = ppc64_elf_howto_raw[i].type; | |
a4b6fadd | 2208 | BFD_ASSERT (type < ARRAY_SIZE (ppc64_elf_howto_table)); |
5bd4f169 AM |
2209 | ppc64_elf_howto_table[type] = &ppc64_elf_howto_raw[i]; |
2210 | } | |
2211 | } | |
2212 | ||
2213 | static reloc_howto_type * | |
4ce794b7 AM |
2214 | ppc64_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, |
2215 | bfd_reloc_code_real_type code) | |
5bd4f169 | 2216 | { |
411e1bfb | 2217 | enum elf_ppc64_reloc_type r = R_PPC64_NONE; |
5bd4f169 AM |
2218 | |
2219 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) | |
2220 | /* Initialize howto table if needed. */ | |
2221 | ppc_howto_init (); | |
2222 | ||
4ce794b7 | 2223 | switch (code) |
5bd4f169 AM |
2224 | { |
2225 | default: | |
4ce794b7 | 2226 | return NULL; |
5bd4f169 | 2227 | |
411e1bfb AM |
2228 | case BFD_RELOC_NONE: r = R_PPC64_NONE; |
2229 | break; | |
2230 | case BFD_RELOC_32: r = R_PPC64_ADDR32; | |
2231 | break; | |
2232 | case BFD_RELOC_PPC_BA26: r = R_PPC64_ADDR24; | |
2233 | break; | |
2234 | case BFD_RELOC_16: r = R_PPC64_ADDR16; | |
2235 | break; | |
2236 | case BFD_RELOC_LO16: r = R_PPC64_ADDR16_LO; | |
2237 | break; | |
2238 | case BFD_RELOC_HI16: r = R_PPC64_ADDR16_HI; | |
2239 | break; | |
f9c6b907 AM |
2240 | case BFD_RELOC_PPC64_ADDR16_HIGH: r = R_PPC64_ADDR16_HIGH; |
2241 | break; | |
411e1bfb | 2242 | case BFD_RELOC_HI16_S: r = R_PPC64_ADDR16_HA; |
5bd4f169 | 2243 | break; |
f9c6b907 AM |
2244 | case BFD_RELOC_PPC64_ADDR16_HIGHA: r = R_PPC64_ADDR16_HIGHA; |
2245 | break; | |
411e1bfb | 2246 | case BFD_RELOC_PPC_BA16: r = R_PPC64_ADDR14; |
5bd4f169 | 2247 | break; |
411e1bfb | 2248 | case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC64_ADDR14_BRTAKEN; |
5bd4f169 | 2249 | break; |
411e1bfb | 2250 | case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC64_ADDR14_BRNTAKEN; |
5bd4f169 | 2251 | break; |
411e1bfb | 2252 | case BFD_RELOC_PPC_B26: r = R_PPC64_REL24; |
5bd4f169 | 2253 | break; |
411e1bfb | 2254 | case BFD_RELOC_PPC_B16: r = R_PPC64_REL14; |
5bd4f169 | 2255 | break; |
411e1bfb | 2256 | case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC64_REL14_BRTAKEN; |
5bd4f169 | 2257 | break; |
411e1bfb | 2258 | case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC64_REL14_BRNTAKEN; |
5bd4f169 | 2259 | break; |
411e1bfb | 2260 | case BFD_RELOC_16_GOTOFF: r = R_PPC64_GOT16; |
5bd4f169 | 2261 | break; |
411e1bfb | 2262 | case BFD_RELOC_LO16_GOTOFF: r = R_PPC64_GOT16_LO; |
5bd4f169 | 2263 | break; |
411e1bfb | 2264 | case BFD_RELOC_HI16_GOTOFF: r = R_PPC64_GOT16_HI; |
5bd4f169 | 2265 | break; |
411e1bfb | 2266 | case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC64_GOT16_HA; |
5bd4f169 | 2267 | break; |
411e1bfb | 2268 | case BFD_RELOC_PPC_COPY: r = R_PPC64_COPY; |
5bd4f169 | 2269 | break; |
411e1bfb | 2270 | case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC64_GLOB_DAT; |
5bd4f169 | 2271 | break; |
411e1bfb | 2272 | case BFD_RELOC_32_PCREL: r = R_PPC64_REL32; |
5bd4f169 | 2273 | break; |
411e1bfb | 2274 | case BFD_RELOC_32_PLTOFF: r = R_PPC64_PLT32; |
5bd4f169 | 2275 | break; |
411e1bfb | 2276 | case BFD_RELOC_32_PLT_PCREL: r = R_PPC64_PLTREL32; |
5bd4f169 | 2277 | break; |
411e1bfb | 2278 | case BFD_RELOC_LO16_PLTOFF: r = R_PPC64_PLT16_LO; |
5bd4f169 | 2279 | break; |
411e1bfb | 2280 | case BFD_RELOC_HI16_PLTOFF: r = R_PPC64_PLT16_HI; |
5bd4f169 | 2281 | break; |
411e1bfb | 2282 | case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC64_PLT16_HA; |
5bd4f169 | 2283 | break; |
411e1bfb | 2284 | case BFD_RELOC_16_BASEREL: r = R_PPC64_SECTOFF; |
5bd4f169 | 2285 | break; |
411e1bfb | 2286 | case BFD_RELOC_LO16_BASEREL: r = R_PPC64_SECTOFF_LO; |
5bd4f169 | 2287 | break; |
411e1bfb | 2288 | case BFD_RELOC_HI16_BASEREL: r = R_PPC64_SECTOFF_HI; |
5bd4f169 | 2289 | break; |
411e1bfb | 2290 | case BFD_RELOC_HI16_S_BASEREL: r = R_PPC64_SECTOFF_HA; |
5bd4f169 | 2291 | break; |
411e1bfb | 2292 | case BFD_RELOC_CTOR: r = R_PPC64_ADDR64; |
5bd4f169 | 2293 | break; |
411e1bfb | 2294 | case BFD_RELOC_64: r = R_PPC64_ADDR64; |
5bd4f169 | 2295 | break; |
411e1bfb | 2296 | case BFD_RELOC_PPC64_HIGHER: r = R_PPC64_ADDR16_HIGHER; |
5bd4f169 | 2297 | break; |
411e1bfb | 2298 | case BFD_RELOC_PPC64_HIGHER_S: r = R_PPC64_ADDR16_HIGHERA; |
5bd4f169 | 2299 | break; |
411e1bfb | 2300 | case BFD_RELOC_PPC64_HIGHEST: r = R_PPC64_ADDR16_HIGHEST; |
5bd4f169 | 2301 | break; |
411e1bfb | 2302 | case BFD_RELOC_PPC64_HIGHEST_S: r = R_PPC64_ADDR16_HIGHESTA; |
5bd4f169 | 2303 | break; |
411e1bfb | 2304 | case BFD_RELOC_64_PCREL: r = R_PPC64_REL64; |
5bd4f169 | 2305 | break; |
411e1bfb | 2306 | case BFD_RELOC_64_PLTOFF: r = R_PPC64_PLT64; |
5bd4f169 | 2307 | break; |
411e1bfb | 2308 | case BFD_RELOC_64_PLT_PCREL: r = R_PPC64_PLTREL64; |
5bd4f169 | 2309 | break; |
411e1bfb | 2310 | case BFD_RELOC_PPC_TOC16: r = R_PPC64_TOC16; |
5bd4f169 | 2311 | break; |
411e1bfb | 2312 | case BFD_RELOC_PPC64_TOC16_LO: r = R_PPC64_TOC16_LO; |
5bd4f169 | 2313 | break; |
411e1bfb | 2314 | case BFD_RELOC_PPC64_TOC16_HI: r = R_PPC64_TOC16_HI; |
5bd4f169 | 2315 | break; |
411e1bfb | 2316 | case BFD_RELOC_PPC64_TOC16_HA: r = R_PPC64_TOC16_HA; |
5bd4f169 | 2317 | break; |
411e1bfb | 2318 | case BFD_RELOC_PPC64_TOC: r = R_PPC64_TOC; |
5bd4f169 | 2319 | break; |
411e1bfb | 2320 | case BFD_RELOC_PPC64_PLTGOT16: r = R_PPC64_PLTGOT16; |
5bd4f169 | 2321 | break; |
411e1bfb | 2322 | case BFD_RELOC_PPC64_PLTGOT16_LO: r = R_PPC64_PLTGOT16_LO; |
5bd4f169 | 2323 | break; |
411e1bfb | 2324 | case BFD_RELOC_PPC64_PLTGOT16_HI: r = R_PPC64_PLTGOT16_HI; |
5bd4f169 | 2325 | break; |
411e1bfb | 2326 | case BFD_RELOC_PPC64_PLTGOT16_HA: r = R_PPC64_PLTGOT16_HA; |
5bd4f169 | 2327 | break; |
411e1bfb | 2328 | case BFD_RELOC_PPC64_ADDR16_DS: r = R_PPC64_ADDR16_DS; |
5bd4f169 | 2329 | break; |
411e1bfb | 2330 | case BFD_RELOC_PPC64_ADDR16_LO_DS: r = R_PPC64_ADDR16_LO_DS; |
5bd4f169 | 2331 | break; |
411e1bfb | 2332 | case BFD_RELOC_PPC64_GOT16_DS: r = R_PPC64_GOT16_DS; |
5bd4f169 | 2333 | break; |
411e1bfb | 2334 | case BFD_RELOC_PPC64_GOT16_LO_DS: r = R_PPC64_GOT16_LO_DS; |
5bd4f169 | 2335 | break; |
411e1bfb | 2336 | case BFD_RELOC_PPC64_PLT16_LO_DS: r = R_PPC64_PLT16_LO_DS; |
5bd4f169 | 2337 | break; |
411e1bfb | 2338 | case BFD_RELOC_PPC64_SECTOFF_DS: r = R_PPC64_SECTOFF_DS; |
5bd4f169 | 2339 | break; |
411e1bfb | 2340 | case BFD_RELOC_PPC64_SECTOFF_LO_DS: r = R_PPC64_SECTOFF_LO_DS; |
5bd4f169 | 2341 | break; |
411e1bfb | 2342 | case BFD_RELOC_PPC64_TOC16_DS: r = R_PPC64_TOC16_DS; |
5bd4f169 | 2343 | break; |
411e1bfb | 2344 | case BFD_RELOC_PPC64_TOC16_LO_DS: r = R_PPC64_TOC16_LO_DS; |
5bd4f169 | 2345 | break; |
411e1bfb | 2346 | case BFD_RELOC_PPC64_PLTGOT16_DS: r = R_PPC64_PLTGOT16_DS; |
5bd4f169 | 2347 | break; |
411e1bfb | 2348 | case BFD_RELOC_PPC64_PLTGOT16_LO_DS: r = R_PPC64_PLTGOT16_LO_DS; |
5bd4f169 | 2349 | break; |
411e1bfb | 2350 | case BFD_RELOC_PPC_TLS: r = R_PPC64_TLS; |
5bd4f169 | 2351 | break; |
727fc41e AM |
2352 | case BFD_RELOC_PPC_TLSGD: r = R_PPC64_TLSGD; |
2353 | break; | |
2354 | case BFD_RELOC_PPC_TLSLD: r = R_PPC64_TLSLD; | |
2355 | break; | |
411e1bfb | 2356 | case BFD_RELOC_PPC_DTPMOD: r = R_PPC64_DTPMOD64; |
5bd4f169 | 2357 | break; |
411e1bfb | 2358 | case BFD_RELOC_PPC_TPREL16: r = R_PPC64_TPREL16; |
5bd4f169 | 2359 | break; |
411e1bfb | 2360 | case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC64_TPREL16_LO; |
5bd4f169 | 2361 | break; |
411e1bfb | 2362 | case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC64_TPREL16_HI; |
5bd4f169 | 2363 | break; |
f9c6b907 AM |
2364 | case BFD_RELOC_PPC64_TPREL16_HIGH: r = R_PPC64_TPREL16_HIGH; |
2365 | break; | |
411e1bfb | 2366 | case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC64_TPREL16_HA; |
5bd4f169 | 2367 | break; |
f9c6b907 AM |
2368 | case BFD_RELOC_PPC64_TPREL16_HIGHA: r = R_PPC64_TPREL16_HIGHA; |
2369 | break; | |
411e1bfb | 2370 | case BFD_RELOC_PPC_TPREL: r = R_PPC64_TPREL64; |
5bd4f169 | 2371 | break; |
411e1bfb AM |
2372 | case BFD_RELOC_PPC_DTPREL16: r = R_PPC64_DTPREL16; |
2373 | break; | |
2374 | case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC64_DTPREL16_LO; | |
2375 | break; | |
2376 | case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC64_DTPREL16_HI; | |
2377 | break; | |
f9c6b907 AM |
2378 | case BFD_RELOC_PPC64_DTPREL16_HIGH: r = R_PPC64_DTPREL16_HIGH; |
2379 | break; | |
411e1bfb AM |
2380 | case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC64_DTPREL16_HA; |
2381 | break; | |
f9c6b907 AM |
2382 | case BFD_RELOC_PPC64_DTPREL16_HIGHA: r = R_PPC64_DTPREL16_HIGHA; |
2383 | break; | |
411e1bfb AM |
2384 | case BFD_RELOC_PPC_DTPREL: r = R_PPC64_DTPREL64; |
2385 | break; | |
2386 | case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC64_GOT_TLSGD16; | |
2387 | break; | |
2388 | case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC64_GOT_TLSGD16_LO; | |
2389 | break; | |
2390 | case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC64_GOT_TLSGD16_HI; | |
2391 | break; | |
2392 | case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC64_GOT_TLSGD16_HA; | |
2393 | break; | |
2394 | case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC64_GOT_TLSLD16; | |
2395 | break; | |
2396 | case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC64_GOT_TLSLD16_LO; | |
2397 | break; | |
2398 | case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC64_GOT_TLSLD16_HI; | |
2399 | break; | |
2400 | case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC64_GOT_TLSLD16_HA; | |
2401 | break; | |
2402 | case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC64_GOT_TPREL16_DS; | |
2403 | break; | |
2404 | case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC64_GOT_TPREL16_LO_DS; | |
2405 | break; | |
2406 | case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC64_GOT_TPREL16_HI; | |
2407 | break; | |
2408 | case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC64_GOT_TPREL16_HA; | |
2409 | break; | |
2410 | case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC64_GOT_DTPREL16_DS; | |
2411 | break; | |
2412 | case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC64_GOT_DTPREL16_LO_DS; | |
2413 | break; | |
2414 | case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC64_GOT_DTPREL16_HI; | |
2415 | break; | |
2416 | case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC64_GOT_DTPREL16_HA; | |
2417 | break; | |
2418 | case BFD_RELOC_PPC64_TPREL16_DS: r = R_PPC64_TPREL16_DS; | |
2419 | break; | |
2420 | case BFD_RELOC_PPC64_TPREL16_LO_DS: r = R_PPC64_TPREL16_LO_DS; | |
2421 | break; | |
2422 | case BFD_RELOC_PPC64_TPREL16_HIGHER: r = R_PPC64_TPREL16_HIGHER; | |
2423 | break; | |
2424 | case BFD_RELOC_PPC64_TPREL16_HIGHERA: r = R_PPC64_TPREL16_HIGHERA; | |
2425 | break; | |
2426 | case BFD_RELOC_PPC64_TPREL16_HIGHEST: r = R_PPC64_TPREL16_HIGHEST; | |
2427 | break; | |
2428 | case BFD_RELOC_PPC64_TPREL16_HIGHESTA: r = R_PPC64_TPREL16_HIGHESTA; | |
2429 | break; | |
2430 | case BFD_RELOC_PPC64_DTPREL16_DS: r = R_PPC64_DTPREL16_DS; | |
2431 | break; | |
2432 | case BFD_RELOC_PPC64_DTPREL16_LO_DS: r = R_PPC64_DTPREL16_LO_DS; | |
2433 | break; | |
2434 | case BFD_RELOC_PPC64_DTPREL16_HIGHER: r = R_PPC64_DTPREL16_HIGHER; | |
2435 | break; | |
2436 | case BFD_RELOC_PPC64_DTPREL16_HIGHERA: r = R_PPC64_DTPREL16_HIGHERA; | |
2437 | break; | |
2438 | case BFD_RELOC_PPC64_DTPREL16_HIGHEST: r = R_PPC64_DTPREL16_HIGHEST; | |
2439 | break; | |
2440 | case BFD_RELOC_PPC64_DTPREL16_HIGHESTA: r = R_PPC64_DTPREL16_HIGHESTA; | |
2441 | break; | |
25f23106 AM |
2442 | case BFD_RELOC_16_PCREL: r = R_PPC64_REL16; |
2443 | break; | |
2444 | case BFD_RELOC_LO16_PCREL: r = R_PPC64_REL16_LO; | |
2445 | break; | |
2446 | case BFD_RELOC_HI16_PCREL: r = R_PPC64_REL16_HI; | |
2447 | break; | |
2448 | case BFD_RELOC_HI16_S_PCREL: r = R_PPC64_REL16_HA; | |
2449 | break; | |
a680de9a PB |
2450 | case BFD_RELOC_PPC_REL16DX_HA: r = R_PPC64_REL16DX_HA; |
2451 | break; | |
006589cf AM |
2452 | case BFD_RELOC_PPC64_ENTRY: r = R_PPC64_ENTRY; |
2453 | break; | |
45965137 AM |
2454 | case BFD_RELOC_PPC64_ADDR64_LOCAL: r = R_PPC64_ADDR64_LOCAL; |
2455 | break; | |
411e1bfb AM |
2456 | case BFD_RELOC_VTABLE_INHERIT: r = R_PPC64_GNU_VTINHERIT; |
2457 | break; | |
2458 | case BFD_RELOC_VTABLE_ENTRY: r = R_PPC64_GNU_VTENTRY; | |
5bd4f169 AM |
2459 | break; |
2460 | } | |
2461 | ||
4ce794b7 | 2462 | return ppc64_elf_howto_table[r]; |
5bd4f169 AM |
2463 | }; |
2464 | ||
157090f7 AM |
2465 | static reloc_howto_type * |
2466 | ppc64_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, | |
2467 | const char *r_name) | |
2468 | { | |
2469 | unsigned int i; | |
2470 | ||
a4b6fadd | 2471 | for (i = 0; i < ARRAY_SIZE (ppc64_elf_howto_raw); i++) |
157090f7 AM |
2472 | if (ppc64_elf_howto_raw[i].name != NULL |
2473 | && strcasecmp (ppc64_elf_howto_raw[i].name, r_name) == 0) | |
2474 | return &ppc64_elf_howto_raw[i]; | |
2475 | ||
2476 | return NULL; | |
2477 | } | |
2478 | ||
5bd4f169 AM |
2479 | /* Set the howto pointer for a PowerPC ELF reloc. */ |
2480 | ||
2481 | static void | |
4ce794b7 AM |
2482 | ppc64_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr, |
2483 | Elf_Internal_Rela *dst) | |
5bd4f169 | 2484 | { |
65f38f15 AM |
2485 | unsigned int type; |
2486 | ||
ef60b7ff | 2487 | /* Initialize howto table if needed. */ |
5bd4f169 | 2488 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) |
5bd4f169 AM |
2489 | ppc_howto_init (); |
2490 | ||
65f38f15 | 2491 | type = ELF64_R_TYPE (dst->r_info); |
a4b6fadd | 2492 | if (type >= ARRAY_SIZE (ppc64_elf_howto_table)) |
d0fb9a8d | 2493 | { |
695344c0 | 2494 | /* xgettext:c-format */ |
4eca0228 AM |
2495 | _bfd_error_handler (_("%B: invalid relocation type %d"), |
2496 | abfd, (int) type); | |
3ec2b351 | 2497 | type = R_PPC64_NONE; |
d0fb9a8d | 2498 | } |
65f38f15 | 2499 | cache_ptr->howto = ppc64_elf_howto_table[type]; |
5bd4f169 AM |
2500 | } |
2501 | ||
04c9666a | 2502 | /* Handle the R_PPC64_ADDR16_HA and similar relocs. */ |
5bd4f169 AM |
2503 | |
2504 | static bfd_reloc_status_type | |
4ce794b7 AM |
2505 | ppc64_elf_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2506 | void *data, asection *input_section, | |
2507 | bfd *output_bfd, char **error_message) | |
5bd4f169 | 2508 | { |
a680de9a PB |
2509 | enum elf_ppc64_reloc_type r_type; |
2510 | long insn; | |
2511 | bfd_size_type octets; | |
2512 | bfd_vma value; | |
2513 | ||
805fc799 AM |
2514 | /* If this is a relocatable link (output_bfd test tells us), just |
2515 | call the generic function. Any adjustment will be done at final | |
2516 | link time. */ | |
2517 | if (output_bfd != NULL) | |
cedb70c5 | 2518 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2519 | input_section, output_bfd, error_message); |
2520 | ||
2521 | /* Adjust the addend for sign extension of the low 16 bits. | |
2522 | We won't actually be using the low 16 bits, so trashing them | |
2523 | doesn't matter. */ | |
2524 | reloc_entry->addend += 0x8000; | |
a680de9a PB |
2525 | r_type = reloc_entry->howto->type; |
2526 | if (r_type != R_PPC64_REL16DX_HA) | |
2527 | return bfd_reloc_continue; | |
2528 | ||
2529 | value = 0; | |
2530 | if (!bfd_is_com_section (symbol->section)) | |
2531 | value = symbol->value; | |
2532 | value += (reloc_entry->addend | |
2533 | + symbol->section->output_offset | |
2534 | + symbol->section->output_section->vma); | |
2535 | value -= (reloc_entry->address | |
2536 | + input_section->output_offset | |
2537 | + input_section->output_section->vma); | |
2538 | value = (bfd_signed_vma) value >> 16; | |
2539 | ||
2540 | octets = reloc_entry->address * bfd_octets_per_byte (abfd); | |
2541 | insn = bfd_get_32 (abfd, (bfd_byte *) data + octets); | |
2542 | insn &= ~0x1fffc1; | |
2543 | insn |= (value & 0xffc1) | ((value & 0x3e) << 15); | |
2544 | bfd_put_32 (abfd, insn, (bfd_byte *) data + octets); | |
2545 | if (value + 0x8000 > 0xffff) | |
2546 | return bfd_reloc_overflow; | |
2547 | return bfd_reloc_ok; | |
805fc799 | 2548 | } |
5bd4f169 | 2549 | |
2441e016 AM |
2550 | static bfd_reloc_status_type |
2551 | ppc64_elf_branch_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, | |
2552 | void *data, asection *input_section, | |
2553 | bfd *output_bfd, char **error_message) | |
2554 | { | |
2555 | if (output_bfd != NULL) | |
2556 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, | |
2557 | input_section, output_bfd, error_message); | |
2558 | ||
699733f6 AM |
2559 | if (strcmp (symbol->section->name, ".opd") == 0 |
2560 | && (symbol->section->owner->flags & DYNAMIC) == 0) | |
2441e016 AM |
2561 | { |
2562 | bfd_vma dest = opd_entry_value (symbol->section, | |
2563 | symbol->value + reloc_entry->addend, | |
aef36ac1 | 2564 | NULL, NULL, FALSE); |
2441e016 AM |
2565 | if (dest != (bfd_vma) -1) |
2566 | reloc_entry->addend = dest - (symbol->value | |
2567 | + symbol->section->output_section->vma | |
2568 | + symbol->section->output_offset); | |
2569 | } | |
810d4e75 AM |
2570 | else |
2571 | { | |
2572 | elf_symbol_type *elfsym = (elf_symbol_type *) symbol; | |
2573 | ||
2574 | if (symbol->section->owner != abfd | |
9f284bf9 | 2575 | && symbol->section->owner != NULL |
810d4e75 AM |
2576 | && abiversion (symbol->section->owner) >= 2) |
2577 | { | |
2578 | unsigned int i; | |
2579 | ||
2580 | for (i = 0; i < symbol->section->owner->symcount; ++i) | |
2581 | { | |
2582 | asymbol *symdef = symbol->section->owner->outsymbols[i]; | |
2583 | ||
2584 | if (strcmp (symdef->name, symbol->name) == 0) | |
2585 | { | |
2586 | elfsym = (elf_symbol_type *) symdef; | |
2587 | break; | |
2588 | } | |
2589 | } | |
2590 | } | |
2591 | reloc_entry->addend | |
2592 | += PPC64_LOCAL_ENTRY_OFFSET (elfsym->internal_elf_sym.st_other); | |
2593 | } | |
2441e016 AM |
2594 | return bfd_reloc_continue; |
2595 | } | |
2596 | ||
805fc799 | 2597 | static bfd_reloc_status_type |
4ce794b7 AM |
2598 | ppc64_elf_brtaken_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2599 | void *data, asection *input_section, | |
2600 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2601 | { |
2602 | long insn; | |
04c9666a | 2603 | enum elf_ppc64_reloc_type r_type; |
805fc799 | 2604 | bfd_size_type octets; |
794e51c0 AM |
2605 | /* Assume 'at' branch hints. */ |
2606 | bfd_boolean is_isa_v2 = TRUE; | |
805fc799 AM |
2607 | |
2608 | /* If this is a relocatable link (output_bfd test tells us), just | |
2609 | call the generic function. Any adjustment will be done at final | |
2610 | link time. */ | |
5bd4f169 | 2611 | if (output_bfd != NULL) |
cedb70c5 | 2612 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2613 | input_section, output_bfd, error_message); |
2614 | ||
2615 | octets = reloc_entry->address * bfd_octets_per_byte (abfd); | |
2616 | insn = bfd_get_32 (abfd, (bfd_byte *) data + octets); | |
2617 | insn &= ~(0x01 << 21); | |
4ce794b7 | 2618 | r_type = reloc_entry->howto->type; |
805fc799 AM |
2619 | if (r_type == R_PPC64_ADDR14_BRTAKEN |
2620 | || r_type == R_PPC64_REL14_BRTAKEN) | |
cedb70c5 | 2621 | insn |= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */ |
805fc799 | 2622 | |
794e51c0 | 2623 | if (is_isa_v2) |
5bd4f169 | 2624 | { |
805fc799 AM |
2625 | /* Set 'a' bit. This is 0b00010 in BO field for branch |
2626 | on CR(BI) insns (BO == 001at or 011at), and 0b01000 | |
2627 | for branch on CTR insns (BO == 1a00t or 1a01t). */ | |
2628 | if ((insn & (0x14 << 21)) == (0x04 << 21)) | |
2629 | insn |= 0x02 << 21; | |
2630 | else if ((insn & (0x14 << 21)) == (0x10 << 21)) | |
2631 | insn |= 0x08 << 21; | |
2632 | else | |
2441e016 | 2633 | goto out; |
5bd4f169 | 2634 | } |
805fc799 AM |
2635 | else |
2636 | { | |
2637 | bfd_vma target = 0; | |
2638 | bfd_vma from; | |
5bd4f169 | 2639 | |
805fc799 AM |
2640 | if (!bfd_is_com_section (symbol->section)) |
2641 | target = symbol->value; | |
2642 | target += symbol->section->output_section->vma; | |
2643 | target += symbol->section->output_offset; | |
2644 | target += reloc_entry->addend; | |
5bd4f169 | 2645 | |
805fc799 AM |
2646 | from = (reloc_entry->address |
2647 | + input_section->output_offset | |
2648 | + input_section->output_section->vma); | |
5bd4f169 | 2649 | |
805fc799 AM |
2650 | /* Invert 'y' bit if not the default. */ |
2651 | if ((bfd_signed_vma) (target - from) < 0) | |
2652 | insn ^= 0x01 << 21; | |
2653 | } | |
4ce794b7 | 2654 | bfd_put_32 (abfd, insn, (bfd_byte *) data + octets); |
2441e016 AM |
2655 | out: |
2656 | return ppc64_elf_branch_reloc (abfd, reloc_entry, symbol, data, | |
2657 | input_section, output_bfd, error_message); | |
805fc799 | 2658 | } |
5bd4f169 | 2659 | |
805fc799 | 2660 | static bfd_reloc_status_type |
4ce794b7 AM |
2661 | ppc64_elf_sectoff_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2662 | void *data, asection *input_section, | |
2663 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2664 | { |
2665 | /* If this is a relocatable link (output_bfd test tells us), just | |
2666 | call the generic function. Any adjustment will be done at final | |
2667 | link time. */ | |
2668 | if (output_bfd != NULL) | |
cedb70c5 | 2669 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 | 2670 | input_section, output_bfd, error_message); |
5bd4f169 | 2671 | |
805fc799 AM |
2672 | /* Subtract the symbol section base address. */ |
2673 | reloc_entry->addend -= symbol->section->output_section->vma; | |
5bd4f169 AM |
2674 | return bfd_reloc_continue; |
2675 | } | |
2676 | ||
805fc799 | 2677 | static bfd_reloc_status_type |
4ce794b7 AM |
2678 | ppc64_elf_sectoff_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2679 | void *data, asection *input_section, | |
2680 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2681 | { |
2682 | /* If this is a relocatable link (output_bfd test tells us), just | |
2683 | call the generic function. Any adjustment will be done at final | |
2684 | link time. */ | |
2685 | if (output_bfd != NULL) | |
cedb70c5 | 2686 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2687 | input_section, output_bfd, error_message); |
2688 | ||
2689 | /* Subtract the symbol section base address. */ | |
2690 | reloc_entry->addend -= symbol->section->output_section->vma; | |
2691 | ||
2692 | /* Adjust the addend for sign extension of the low 16 bits. */ | |
2693 | reloc_entry->addend += 0x8000; | |
2694 | return bfd_reloc_continue; | |
2695 | } | |
2696 | ||
2697 | static bfd_reloc_status_type | |
4ce794b7 AM |
2698 | ppc64_elf_toc_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2699 | void *data, asection *input_section, | |
2700 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2701 | { |
2702 | bfd_vma TOCstart; | |
2703 | ||
2704 | /* If this is a relocatable link (output_bfd test tells us), just | |
2705 | call the generic function. Any adjustment will be done at final | |
2706 | link time. */ | |
2707 | if (output_bfd != NULL) | |
cedb70c5 | 2708 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2709 | input_section, output_bfd, error_message); |
2710 | ||
2711 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
2712 | if (TOCstart == 0) | |
1c865ab2 | 2713 | TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner); |
805fc799 AM |
2714 | |
2715 | /* Subtract the TOC base address. */ | |
2716 | reloc_entry->addend -= TOCstart + TOC_BASE_OFF; | |
2717 | return bfd_reloc_continue; | |
2718 | } | |
2719 | ||
2720 | static bfd_reloc_status_type | |
4ce794b7 AM |
2721 | ppc64_elf_toc_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2722 | void *data, asection *input_section, | |
2723 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2724 | { |
2725 | bfd_vma TOCstart; | |
2726 | ||
2727 | /* If this is a relocatable link (output_bfd test tells us), just | |
2728 | call the generic function. Any adjustment will be done at final | |
2729 | link time. */ | |
2730 | if (output_bfd != NULL) | |
cedb70c5 | 2731 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2732 | input_section, output_bfd, error_message); |
2733 | ||
2734 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
2735 | if (TOCstart == 0) | |
1c865ab2 | 2736 | TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner); |
805fc799 AM |
2737 | |
2738 | /* Subtract the TOC base address. */ | |
2739 | reloc_entry->addend -= TOCstart + TOC_BASE_OFF; | |
2740 | ||
2741 | /* Adjust the addend for sign extension of the low 16 bits. */ | |
2742 | reloc_entry->addend += 0x8000; | |
2743 | return bfd_reloc_continue; | |
2744 | } | |
2745 | ||
2746 | static bfd_reloc_status_type | |
4ce794b7 AM |
2747 | ppc64_elf_toc64_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2748 | void *data, asection *input_section, | |
2749 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2750 | { |
2751 | bfd_vma TOCstart; | |
2752 | bfd_size_type octets; | |
2753 | ||
2754 | /* If this is a relocatable link (output_bfd test tells us), just | |
2755 | call the generic function. Any adjustment will be done at final | |
2756 | link time. */ | |
2757 | if (output_bfd != NULL) | |
cedb70c5 | 2758 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2759 | input_section, output_bfd, error_message); |
2760 | ||
2761 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
2762 | if (TOCstart == 0) | |
1c865ab2 | 2763 | TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner); |
805fc799 AM |
2764 | |
2765 | octets = reloc_entry->address * bfd_octets_per_byte (abfd); | |
2766 | bfd_put_64 (abfd, TOCstart + TOC_BASE_OFF, (bfd_byte *) data + octets); | |
2767 | return bfd_reloc_ok; | |
2768 | } | |
2769 | ||
2770 | static bfd_reloc_status_type | |
4ce794b7 AM |
2771 | ppc64_elf_unhandled_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2772 | void *data, asection *input_section, | |
2773 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2774 | { |
2775 | /* If this is a relocatable link (output_bfd test tells us), just | |
2776 | call the generic function. Any adjustment will be done at final | |
2777 | link time. */ | |
2778 | if (output_bfd != NULL) | |
cedb70c5 | 2779 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2780 | input_section, output_bfd, error_message); |
2781 | ||
2782 | if (error_message != NULL) | |
2783 | { | |
2784 | static char buf[60]; | |
2785 | sprintf (buf, "generic linker can't handle %s", | |
2786 | reloc_entry->howto->name); | |
2787 | *error_message = buf; | |
2788 | } | |
2789 | return bfd_reloc_dangerous; | |
2790 | } | |
2791 | ||
927be08e AM |
2792 | /* Track GOT entries needed for a given symbol. We might need more |
2793 | than one got entry per symbol. */ | |
2794 | struct got_entry | |
2795 | { | |
2796 | struct got_entry *next; | |
2797 | ||
2798 | /* The symbol addend that we'll be placing in the GOT. */ | |
2799 | bfd_vma addend; | |
2800 | ||
2801 | /* Unlike other ELF targets, we use separate GOT entries for the same | |
2802 | symbol referenced from different input files. This is to support | |
2803 | automatic multiple TOC/GOT sections, where the TOC base can vary | |
2804 | from one input file to another. After partitioning into TOC groups | |
2805 | we merge entries within the group. | |
2806 | ||
2807 | Point to the BFD owning this GOT entry. */ | |
2808 | bfd *owner; | |
2809 | ||
2810 | /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD, | |
2811 | TLS_TPREL or TLS_DTPREL for tls entries. */ | |
f961d9dd | 2812 | unsigned char tls_type; |
927be08e AM |
2813 | |
2814 | /* Non-zero if got.ent points to real entry. */ | |
f961d9dd | 2815 | unsigned char is_indirect; |
927be08e AM |
2816 | |
2817 | /* Reference count until size_dynamic_sections, GOT offset thereafter. */ | |
2818 | union | |
2819 | { | |
2820 | bfd_signed_vma refcount; | |
2821 | bfd_vma offset; | |
2822 | struct got_entry *ent; | |
2823 | } got; | |
2824 | }; | |
2825 | ||
2826 | /* The same for PLT. */ | |
2827 | struct plt_entry | |
2828 | { | |
2829 | struct plt_entry *next; | |
2830 | ||
2831 | bfd_vma addend; | |
2832 | ||
2833 | union | |
2834 | { | |
2835 | bfd_signed_vma refcount; | |
2836 | bfd_vma offset; | |
2837 | } plt; | |
2838 | }; | |
2839 | ||
e717da7e AM |
2840 | struct ppc64_elf_obj_tdata |
2841 | { | |
2842 | struct elf_obj_tdata elf; | |
2843 | ||
2844 | /* Shortcuts to dynamic linker sections. */ | |
2845 | asection *got; | |
2846 | asection *relgot; | |
2847 | ||
b3fac117 AM |
2848 | /* Used during garbage collection. We attach global symbols defined |
2849 | on removed .opd entries to this section so that the sym is removed. */ | |
2850 | asection *deleted_section; | |
81688140 | 2851 | |
927be08e | 2852 | /* TLS local dynamic got entry handling. Support for multiple GOT |
e717da7e | 2853 | sections means we potentially need one of these for each input bfd. */ |
927be08e | 2854 | struct got_entry tlsld_got; |
8860955f | 2855 | |
729eabd5 AM |
2856 | union { |
2857 | /* A copy of relocs before they are modified for --emit-relocs. */ | |
2858 | Elf_Internal_Rela *relocs; | |
2859 | ||
2860 | /* Section contents. */ | |
2861 | bfd_byte *contents; | |
2862 | } opd; | |
d77c8a4b AM |
2863 | |
2864 | /* Nonzero if this bfd has small toc/got relocs, ie. that expect | |
2865 | the reloc to be in the range -32768 to 32767. */ | |
98528052 AM |
2866 | unsigned int has_small_toc_reloc : 1; |
2867 | ||
560c8763 AM |
2868 | /* Set if toc/got ha relocs detected not using r2, or lo reloc |
2869 | instruction not one we handle. */ | |
2870 | unsigned int unexpected_toc_insn : 1; | |
e717da7e AM |
2871 | }; |
2872 | ||
2873 | #define ppc64_elf_tdata(bfd) \ | |
2874 | ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any) | |
2875 | ||
2876 | #define ppc64_tlsld_got(bfd) \ | |
2877 | (&ppc64_elf_tdata (bfd)->tlsld_got) | |
2878 | ||
0c8d6e5c AM |
2879 | #define is_ppc64_elf(bfd) \ |
2880 | (bfd_get_flavour (bfd) == bfd_target_elf_flavour \ | |
4dfe6ac6 | 2881 | && elf_object_id (bfd) == PPC64_ELF_DATA) |
0c8d6e5c | 2882 | |
e717da7e AM |
2883 | /* Override the generic function because we store some extras. */ |
2884 | ||
2885 | static bfd_boolean | |
2886 | ppc64_elf_mkobject (bfd *abfd) | |
2887 | { | |
0ffa91dd | 2888 | return bfd_elf_allocate_object (abfd, sizeof (struct ppc64_elf_obj_tdata), |
4dfe6ac6 | 2889 | PPC64_ELF_DATA); |
e717da7e AM |
2890 | } |
2891 | ||
feee612b | 2892 | /* Fix bad default arch selected for a 64 bit input bfd when the |
14b57c7c | 2893 | default is 32 bit. Also select arch based on apuinfo. */ |
feee612b | 2894 | |
b34976b6 | 2895 | static bfd_boolean |
4ce794b7 | 2896 | ppc64_elf_object_p (bfd *abfd) |
feee612b | 2897 | { |
14b57c7c AM |
2898 | if (!abfd->arch_info->the_default) |
2899 | return TRUE; | |
2900 | ||
2901 | if (abfd->arch_info->bits_per_word == 32) | |
feee612b AM |
2902 | { |
2903 | Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd); | |
2904 | ||
2905 | if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS64) | |
2906 | { | |
2907 | /* Relies on arch after 32 bit default being 64 bit default. */ | |
2908 | abfd->arch_info = abfd->arch_info->next; | |
2909 | BFD_ASSERT (abfd->arch_info->bits_per_word == 64); | |
2910 | } | |
2911 | } | |
14b57c7c | 2912 | return _bfd_elf_ppc_set_arch (abfd); |
feee612b AM |
2913 | } |
2914 | ||
d37c89e5 AM |
2915 | /* Support for core dump NOTE sections. */ |
2916 | ||
2917 | static bfd_boolean | |
2918 | ppc64_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) | |
2919 | { | |
eea6121a | 2920 | size_t offset, size; |
d37c89e5 AM |
2921 | |
2922 | if (note->descsz != 504) | |
2923 | return FALSE; | |
2924 | ||
2925 | /* pr_cursig */ | |
228e534f | 2926 | elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12); |
d37c89e5 AM |
2927 | |
2928 | /* pr_pid */ | |
228e534f | 2929 | elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 32); |
d37c89e5 AM |
2930 | |
2931 | /* pr_reg */ | |
2932 | offset = 112; | |
eea6121a | 2933 | size = 384; |
d37c89e5 AM |
2934 | |
2935 | /* Make a ".reg/999" section. */ | |
2936 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", | |
eea6121a | 2937 | size, note->descpos + offset); |
d37c89e5 AM |
2938 | } |
2939 | ||
2940 | static bfd_boolean | |
2941 | ppc64_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) | |
2942 | { | |
2943 | if (note->descsz != 136) | |
2944 | return FALSE; | |
2945 | ||
228e534f | 2946 | elf_tdata (abfd)->core->pid |
bc989cdc | 2947 | = bfd_get_32 (abfd, note->descdata + 24); |
228e534f | 2948 | elf_tdata (abfd)->core->program |
d37c89e5 | 2949 | = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16); |
228e534f | 2950 | elf_tdata (abfd)->core->command |
d37c89e5 AM |
2951 | = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80); |
2952 | ||
2953 | return TRUE; | |
2954 | } | |
2955 | ||
183e98be AM |
2956 | static char * |
2957 | ppc64_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type, | |
2958 | ...) | |
2959 | { | |
2960 | switch (note_type) | |
2961 | { | |
2962 | default: | |
2963 | return NULL; | |
2964 | ||
2965 | case NT_PRPSINFO: | |
2966 | { | |
2967 | char data[136]; | |
2968 | va_list ap; | |
2969 | ||
2970 | va_start (ap, note_type); | |
75cd47ed | 2971 | memset (data, 0, sizeof (data)); |
183e98be AM |
2972 | strncpy (data + 40, va_arg (ap, const char *), 16); |
2973 | strncpy (data + 56, va_arg (ap, const char *), 80); | |
2974 | va_end (ap); | |
2975 | return elfcore_write_note (abfd, buf, bufsiz, | |
2976 | "CORE", note_type, data, sizeof (data)); | |
2977 | } | |
2978 | ||
2979 | case NT_PRSTATUS: | |
2980 | { | |
2981 | char data[504]; | |
2982 | va_list ap; | |
2983 | long pid; | |
2984 | int cursig; | |
2985 | const void *greg; | |
2986 | ||
2987 | va_start (ap, note_type); | |
2988 | memset (data, 0, 112); | |
2989 | pid = va_arg (ap, long); | |
2990 | bfd_put_32 (abfd, pid, data + 32); | |
2991 | cursig = va_arg (ap, int); | |
2992 | bfd_put_16 (abfd, cursig, data + 12); | |
2993 | greg = va_arg (ap, const void *); | |
2994 | memcpy (data + 112, greg, 384); | |
2995 | memset (data + 496, 0, 8); | |
2996 | va_end (ap); | |
2997 | return elfcore_write_note (abfd, buf, bufsiz, | |
2998 | "CORE", note_type, data, sizeof (data)); | |
2999 | } | |
3000 | } | |
3001 | } | |
3002 | ||
5d35169e AM |
3003 | /* Add extra PPC sections. */ |
3004 | ||
b35d266b | 3005 | static const struct bfd_elf_special_section ppc64_elf_special_sections[]= |
7f4d3958 | 3006 | { |
0112cd26 NC |
3007 | { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, 0 }, |
3008 | { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, | |
3009 | { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
3010 | { STRING_COMMA_LEN (".toc"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
3011 | { STRING_COMMA_LEN (".toc1"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
3012 | { STRING_COMMA_LEN (".tocbss"), 0, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, | |
3013 | { NULL, 0, 0, 0, 0 } | |
5d35169e AM |
3014 | }; |
3015 | ||
7c8fe5c4 AM |
3016 | enum _ppc64_sec_type { |
3017 | sec_normal = 0, | |
3018 | sec_opd = 1, | |
3019 | sec_toc = 2 | |
3020 | }; | |
3021 | ||
f0abc2a1 AM |
3022 | struct _ppc64_elf_section_data |
3023 | { | |
3024 | struct bfd_elf_section_data elf; | |
411e1bfb | 3025 | |
f0abc2a1 AM |
3026 | union |
3027 | { | |
51aecdc5 AM |
3028 | /* An array with one entry for each opd function descriptor, |
3029 | and some spares since opd entries may be either 16 or 24 bytes. */ | |
3030 | #define OPD_NDX(OFF) ((OFF) >> 4) | |
74f0fb50 AM |
3031 | struct _opd_sec_data |
3032 | { | |
3033 | /* Points to the function code section for local opd entries. */ | |
3034 | asection **func_sec; | |
3035 | ||
3036 | /* After editing .opd, adjust references to opd local syms. */ | |
3037 | long *adjust; | |
3038 | } opd; | |
7c8fe5c4 | 3039 | |
3a71aa26 AM |
3040 | /* An array for toc sections, indexed by offset/8. */ |
3041 | struct _toc_sec_data | |
3042 | { | |
3043 | /* Specifies the relocation symbol index used at a given toc offset. */ | |
3044 | unsigned *symndx; | |
3045 | ||
3046 | /* And the relocation addend. */ | |
3047 | bfd_vma *add; | |
3048 | } toc; | |
7c8fe5c4 AM |
3049 | } u; |
3050 | ||
3051 | enum _ppc64_sec_type sec_type:2; | |
411e1bfb | 3052 | |
7c8fe5c4 AM |
3053 | /* Flag set when small branches are detected. Used to |
3054 | select suitable defaults for the stub group size. */ | |
3055 | unsigned int has_14bit_branch:1; | |
f0abc2a1 AM |
3056 | }; |
3057 | ||
3058 | #define ppc64_elf_section_data(sec) \ | |
411e1bfb | 3059 | ((struct _ppc64_elf_section_data *) elf_section_data (sec)) |
f0abc2a1 AM |
3060 | |
3061 | static bfd_boolean | |
4ce794b7 | 3062 | ppc64_elf_new_section_hook (bfd *abfd, asection *sec) |
f0abc2a1 | 3063 | { |
f592407e AM |
3064 | if (!sec->used_by_bfd) |
3065 | { | |
3066 | struct _ppc64_elf_section_data *sdata; | |
3067 | bfd_size_type amt = sizeof (*sdata); | |
f0abc2a1 | 3068 | |
f592407e AM |
3069 | sdata = bfd_zalloc (abfd, amt); |
3070 | if (sdata == NULL) | |
3071 | return FALSE; | |
3072 | sec->used_by_bfd = sdata; | |
3073 | } | |
f0abc2a1 AM |
3074 | |
3075 | return _bfd_elf_new_section_hook (abfd, sec); | |
3076 | } | |
4025353c | 3077 | |
74f0fb50 | 3078 | static struct _opd_sec_data * |
4025353c AM |
3079 | get_opd_info (asection * sec) |
3080 | { | |
3081 | if (sec != NULL | |
3082 | && ppc64_elf_section_data (sec) != NULL | |
7c8fe5c4 | 3083 | && ppc64_elf_section_data (sec)->sec_type == sec_opd) |
74f0fb50 | 3084 | return &ppc64_elf_section_data (sec)->u.opd; |
4025353c AM |
3085 | return NULL; |
3086 | } | |
90e3cdf2 JJ |
3087 | \f |
3088 | /* Parameters for the qsort hook. */ | |
90e3cdf2 | 3089 | static bfd_boolean synthetic_relocatable; |
cd285db5 | 3090 | static asection *synthetic_opd; |
90e3cdf2 | 3091 | |
699733f6 | 3092 | /* qsort comparison function for ppc64_elf_get_synthetic_symtab. */ |
90e3cdf2 JJ |
3093 | |
3094 | static int | |
3095 | compare_symbols (const void *ap, const void *bp) | |
3096 | { | |
3097 | const asymbol *a = * (const asymbol **) ap; | |
3098 | const asymbol *b = * (const asymbol **) bp; | |
3099 | ||
699733f6 AM |
3100 | /* Section symbols first. */ |
3101 | if ((a->flags & BSF_SECTION_SYM) && !(b->flags & BSF_SECTION_SYM)) | |
90e3cdf2 | 3102 | return -1; |
699733f6 | 3103 | if (!(a->flags & BSF_SECTION_SYM) && (b->flags & BSF_SECTION_SYM)) |
90e3cdf2 JJ |
3104 | return 1; |
3105 | ||
699733f6 | 3106 | /* then .opd symbols. */ |
cd285db5 AM |
3107 | if (synthetic_opd != NULL) |
3108 | { | |
3109 | if (strcmp (a->section->name, ".opd") == 0 | |
3110 | && strcmp (b->section->name, ".opd") != 0) | |
3111 | return -1; | |
3112 | if (strcmp (a->section->name, ".opd") != 0 | |
3113 | && strcmp (b->section->name, ".opd") == 0) | |
3114 | return 1; | |
3115 | } | |
90e3cdf2 | 3116 | |
699733f6 | 3117 | /* then other code symbols. */ |
90e3cdf2 JJ |
3118 | if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) |
3119 | == (SEC_CODE | SEC_ALLOC) | |
3120 | && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
3121 | != (SEC_CODE | SEC_ALLOC)) | |
3122 | return -1; | |
3123 | ||
3124 | if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
3125 | != (SEC_CODE | SEC_ALLOC) | |
3126 | && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
3127 | == (SEC_CODE | SEC_ALLOC)) | |
3128 | return 1; | |
3129 | ||
3130 | if (synthetic_relocatable) | |
3131 | { | |
3132 | if (a->section->id < b->section->id) | |
3133 | return -1; | |
3134 | ||
3135 | if (a->section->id > b->section->id) | |
3136 | return 1; | |
3137 | } | |
3138 | ||
3139 | if (a->value + a->section->vma < b->value + b->section->vma) | |
3140 | return -1; | |
3141 | ||
3142 | if (a->value + a->section->vma > b->value + b->section->vma) | |
3143 | return 1; | |
3144 | ||
4d35a0aa AM |
3145 | /* For syms with the same value, prefer strong dynamic global function |
3146 | syms over other syms. */ | |
3147 | if ((a->flags & BSF_GLOBAL) != 0 && (b->flags & BSF_GLOBAL) == 0) | |
3148 | return -1; | |
3149 | ||
3150 | if ((a->flags & BSF_GLOBAL) == 0 && (b->flags & BSF_GLOBAL) != 0) | |
3151 | return 1; | |
3152 | ||
3153 | if ((a->flags & BSF_FUNCTION) != 0 && (b->flags & BSF_FUNCTION) == 0) | |
3154 | return -1; | |
3155 | ||
3156 | if ((a->flags & BSF_FUNCTION) == 0 && (b->flags & BSF_FUNCTION) != 0) | |
3157 | return 1; | |
3158 | ||
3159 | if ((a->flags & BSF_WEAK) == 0 && (b->flags & BSF_WEAK) != 0) | |
3160 | return -1; | |
3161 | ||
3162 | if ((a->flags & BSF_WEAK) != 0 && (b->flags & BSF_WEAK) == 0) | |
3163 | return 1; | |
3164 | ||
3165 | if ((a->flags & BSF_DYNAMIC) != 0 && (b->flags & BSF_DYNAMIC) == 0) | |
3166 | return -1; | |
3167 | ||
3168 | if ((a->flags & BSF_DYNAMIC) == 0 && (b->flags & BSF_DYNAMIC) != 0) | |
3169 | return 1; | |
3170 | ||
90e3cdf2 JJ |
3171 | return 0; |
3172 | } | |
3173 | ||
699733f6 | 3174 | /* Search SYMS for a symbol of the given VALUE. */ |
90e3cdf2 | 3175 | |
699733f6 | 3176 | static asymbol * |
7292b3ac | 3177 | sym_exists_at (asymbol **syms, long lo, long hi, unsigned int id, bfd_vma value) |
90e3cdf2 | 3178 | { |
699733f6 | 3179 | long mid; |
90e3cdf2 | 3180 | |
7292b3ac | 3181 | if (id == (unsigned) -1) |
699733f6 AM |
3182 | { |
3183 | while (lo < hi) | |
3184 | { | |
3185 | mid = (lo + hi) >> 1; | |
3186 | if (syms[mid]->value + syms[mid]->section->vma < value) | |
3187 | lo = mid + 1; | |
3188 | else if (syms[mid]->value + syms[mid]->section->vma > value) | |
3189 | hi = mid; | |
3190 | else | |
3191 | return syms[mid]; | |
3192 | } | |
3193 | } | |
3194 | else | |
3195 | { | |
3196 | while (lo < hi) | |
3197 | { | |
3198 | mid = (lo + hi) >> 1; | |
3199 | if (syms[mid]->section->id < id) | |
3200 | lo = mid + 1; | |
3201 | else if (syms[mid]->section->id > id) | |
3202 | hi = mid; | |
3203 | else if (syms[mid]->value < value) | |
3204 | lo = mid + 1; | |
3205 | else if (syms[mid]->value > value) | |
3206 | hi = mid; | |
3207 | else | |
3208 | return syms[mid]; | |
3209 | } | |
3210 | } | |
3211 | return NULL; | |
90e3cdf2 JJ |
3212 | } |
3213 | ||
468392fb AM |
3214 | static bfd_boolean |
3215 | section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr) | |
3216 | { | |
3217 | bfd_vma vma = *(bfd_vma *) ptr; | |
3218 | return ((section->flags & SEC_ALLOC) != 0 | |
3219 | && section->vma <= vma | |
3220 | && vma < section->vma + section->size); | |
3221 | } | |
3222 | ||
699733f6 | 3223 | /* Create synthetic symbols, effectively restoring "dot-symbol" function |
c4b0b099 AM |
3224 | entry syms. Also generate @plt symbols for the glink branch table. |
3225 | Returns count of synthetic symbols in RET or -1 on error. */ | |
90e3cdf2 JJ |
3226 | |
3227 | static long | |
a7535cf3 AM |
3228 | ppc64_elf_get_synthetic_symtab (bfd *abfd, |
3229 | long static_count, asymbol **static_syms, | |
3230 | long dyn_count, asymbol **dyn_syms, | |
c9727e01 | 3231 | asymbol **ret) |
90e3cdf2 JJ |
3232 | { |
3233 | asymbol *s; | |
699733f6 AM |
3234 | long i; |
3235 | long count; | |
90e3cdf2 | 3236 | char *names; |
a7535cf3 | 3237 | long symcount, codesecsym, codesecsymend, secsymend, opdsymend; |
ee67d69a | 3238 | asection *opd = NULL; |
90e3cdf2 | 3239 | bfd_boolean relocatable = (abfd->flags & (EXEC_P | DYNAMIC)) == 0; |
a7535cf3 | 3240 | asymbol **syms; |
ee67d69a | 3241 | int abi = abiversion (abfd); |
90e3cdf2 JJ |
3242 | |
3243 | *ret = NULL; | |
3244 | ||
ee67d69a AM |
3245 | if (abi < 2) |
3246 | { | |
3247 | opd = bfd_get_section_by_name (abfd, ".opd"); | |
3248 | if (opd == NULL && abi == 1) | |
3249 | return 0; | |
3250 | } | |
90e3cdf2 | 3251 | |
a7535cf3 | 3252 | symcount = static_count; |
c9727e01 | 3253 | if (!relocatable) |
a7535cf3 | 3254 | symcount += dyn_count; |
90e3cdf2 | 3255 | if (symcount == 0) |
c9727e01 | 3256 | return 0; |
90e3cdf2 | 3257 | |
a7535cf3 AM |
3258 | syms = bfd_malloc ((symcount + 1) * sizeof (*syms)); |
3259 | if (syms == NULL) | |
7356fed5 | 3260 | return -1; |
a7535cf3 AM |
3261 | |
3262 | if (!relocatable && static_count != 0 && dyn_count != 0) | |
3263 | { | |
3264 | /* Use both symbol tables. */ | |
3265 | memcpy (syms, static_syms, static_count * sizeof (*syms)); | |
3266 | memcpy (syms + static_count, dyn_syms, (dyn_count + 1) * sizeof (*syms)); | |
3267 | } | |
3268 | else if (!relocatable && static_count == 0) | |
3269 | memcpy (syms, dyn_syms, (symcount + 1) * sizeof (*syms)); | |
3270 | else | |
3271 | memcpy (syms, static_syms, (symcount + 1) * sizeof (*syms)); | |
3272 | ||
90e3cdf2 | 3273 | synthetic_relocatable = relocatable; |
cd285db5 | 3274 | synthetic_opd = opd; |
595da8c5 | 3275 | qsort (syms, symcount, sizeof (*syms), compare_symbols); |
90e3cdf2 | 3276 | |
c9727e01 AM |
3277 | if (!relocatable && symcount > 1) |
3278 | { | |
3279 | long j; | |
3280 | /* Trim duplicate syms, since we may have merged the normal and | |
3281 | dynamic symbols. Actually, we only care about syms that have | |
3b36f7e6 | 3282 | different values, so trim any with the same value. */ |
c9727e01 AM |
3283 | for (i = 1, j = 1; i < symcount; ++i) |
3284 | if (syms[i - 1]->value + syms[i - 1]->section->vma | |
3285 | != syms[i]->value + syms[i]->section->vma) | |
3286 | syms[j++] = syms[i]; | |
3287 | symcount = j; | |
3288 | } | |
3289 | ||
699733f6 | 3290 | i = 0; |
cd285db5 AM |
3291 | /* Note that here and in compare_symbols we can't compare opd and |
3292 | sym->section directly. With separate debug info files, the | |
3293 | symbols will be extracted from the debug file while abfd passed | |
3294 | to this function is the real binary. */ | |
3295 | if (opd != NULL && strcmp (syms[i]->section->name, ".opd") == 0) | |
699733f6 AM |
3296 | ++i; |
3297 | codesecsym = i; | |
90e3cdf2 | 3298 | |
699733f6 AM |
3299 | for (; i < symcount; ++i) |
3300 | if (((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
3301 | != (SEC_CODE | SEC_ALLOC)) | |
3302 | || (syms[i]->flags & BSF_SECTION_SYM) == 0) | |
3303 | break; | |
3304 | codesecsymend = i; | |
90e3cdf2 | 3305 | |
699733f6 AM |
3306 | for (; i < symcount; ++i) |
3307 | if ((syms[i]->flags & BSF_SECTION_SYM) == 0) | |
3308 | break; | |
3309 | secsymend = i; | |
90e3cdf2 | 3310 | |
cd285db5 AM |
3311 | if (opd != NULL) |
3312 | for (; i < symcount; ++i) | |
3313 | if (strcmp (syms[i]->section->name, ".opd") != 0) | |
3314 | break; | |
699733f6 | 3315 | opdsymend = i; |
90e3cdf2 | 3316 | |
699733f6 AM |
3317 | for (; i < symcount; ++i) |
3318 | if ((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
3319 | != (SEC_CODE | SEC_ALLOC)) | |
3320 | break; | |
3321 | symcount = i; | |
3322 | ||
c9727e01 | 3323 | count = 0; |
90e3cdf2 | 3324 | |
699733f6 | 3325 | if (relocatable) |
90e3cdf2 | 3326 | { |
699733f6 AM |
3327 | bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean); |
3328 | arelent *r; | |
3329 | size_t size; | |
3330 | long relcount; | |
90e3cdf2 | 3331 | |
468392fb AM |
3332 | if (opdsymend == secsymend) |
3333 | goto done; | |
3334 | ||
699733f6 | 3335 | slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; |
90e3cdf2 | 3336 | relcount = (opd->flags & SEC_RELOC) ? opd->reloc_count : 0; |
7356fed5 | 3337 | if (relcount == 0) |
c9727e01 | 3338 | goto done; |
90e3cdf2 | 3339 | |
7356fed5 AM |
3340 | if (!(*slurp_relocs) (abfd, opd, static_syms, FALSE)) |
3341 | { | |
3342 | count = -1; | |
3343 | goto done; | |
3344 | } | |
3345 | ||
699733f6 | 3346 | size = 0; |
595da8c5 | 3347 | for (i = secsymend, r = opd->relocation; i < opdsymend; ++i) |
699733f6 AM |
3348 | { |
3349 | asymbol *sym; | |
90e3cdf2 | 3350 | |
595da8c5 | 3351 | while (r < opd->relocation + relcount |
699733f6 AM |
3352 | && r->address < syms[i]->value + opd->vma) |
3353 | ++r; | |
90e3cdf2 | 3354 | |
595da8c5 | 3355 | if (r == opd->relocation + relcount) |
699733f6 | 3356 | break; |
90e3cdf2 | 3357 | |
699733f6 AM |
3358 | if (r->address != syms[i]->value + opd->vma) |
3359 | continue; | |
90e3cdf2 | 3360 | |
699733f6 AM |
3361 | if (r->howto->type != R_PPC64_ADDR64) |
3362 | continue; | |
90e3cdf2 | 3363 | |
699733f6 AM |
3364 | sym = *r->sym_ptr_ptr; |
3365 | if (!sym_exists_at (syms, opdsymend, symcount, | |
3366 | sym->section->id, sym->value + r->addend)) | |
3367 | { | |
3368 | ++count; | |
3369 | size += sizeof (asymbol); | |
3370 | size += strlen (syms[i]->name) + 2; | |
3371 | } | |
3372 | } | |
90e3cdf2 | 3373 | |
c4b0b099 AM |
3374 | if (size == 0) |
3375 | goto done; | |
699733f6 AM |
3376 | s = *ret = bfd_malloc (size); |
3377 | if (s == NULL) | |
3378 | { | |
7356fed5 | 3379 | count = -1; |
c9727e01 | 3380 | goto done; |
699733f6 | 3381 | } |
90e3cdf2 | 3382 | |
699733f6 | 3383 | names = (char *) (s + count); |
90e3cdf2 | 3384 | |
595da8c5 | 3385 | for (i = secsymend, r = opd->relocation; i < opdsymend; ++i) |
90e3cdf2 | 3386 | { |
699733f6 | 3387 | asymbol *sym; |
90e3cdf2 | 3388 | |
595da8c5 | 3389 | while (r < opd->relocation + relcount |
699733f6 AM |
3390 | && r->address < syms[i]->value + opd->vma) |
3391 | ++r; | |
90e3cdf2 | 3392 | |
595da8c5 | 3393 | if (r == opd->relocation + relcount) |
699733f6 AM |
3394 | break; |
3395 | ||
3396 | if (r->address != syms[i]->value + opd->vma) | |
3397 | continue; | |
3398 | ||
3399 | if (r->howto->type != R_PPC64_ADDR64) | |
3400 | continue; | |
90e3cdf2 | 3401 | |
699733f6 AM |
3402 | sym = *r->sym_ptr_ptr; |
3403 | if (!sym_exists_at (syms, opdsymend, symcount, | |
3404 | sym->section->id, sym->value + r->addend)) | |
3405 | { | |
3406 | size_t len; | |
3407 | ||
3408 | *s = *syms[i]; | |
6ba2a415 | 3409 | s->flags |= BSF_SYNTHETIC; |
699733f6 AM |
3410 | s->section = sym->section; |
3411 | s->value = sym->value + r->addend; | |
3412 | s->name = names; | |
3413 | *names++ = '.'; | |
3414 | len = strlen (syms[i]->name); | |
3415 | memcpy (names, syms[i]->name, len + 1); | |
3416 | names += len + 1; | |
6f610d07 UW |
3417 | /* Have udata.p point back to the original symbol this |
3418 | synthetic symbol was derived from. */ | |
3419 | s->udata.p = syms[i]; | |
699733f6 AM |
3420 | s++; |
3421 | } | |
3422 | } | |
3423 | } | |
3424 | else | |
90e3cdf2 | 3425 | { |
468392fb | 3426 | bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean); |
ee67d69a | 3427 | bfd_byte *contents = NULL; |
699733f6 | 3428 | size_t size; |
468392fb AM |
3429 | long plt_count = 0; |
3430 | bfd_vma glink_vma = 0, resolv_vma = 0; | |
3431 | asection *dynamic, *glink = NULL, *relplt = NULL; | |
3432 | arelent *p; | |
90e3cdf2 | 3433 | |
ee67d69a | 3434 | if (opd != NULL && !bfd_malloc_and_get_section (abfd, opd, &contents)) |
699733f6 | 3435 | { |
c4b0b099 AM |
3436 | free_contents_and_exit_err: |
3437 | count = -1; | |
ee67d69a | 3438 | free_contents_and_exit: |
699733f6 | 3439 | if (contents) |
ee67d69a | 3440 | free (contents); |
c9727e01 | 3441 | goto done; |
699733f6 | 3442 | } |
90e3cdf2 | 3443 | |
699733f6 AM |
3444 | size = 0; |
3445 | for (i = secsymend; i < opdsymend; ++i) | |
3446 | { | |
3447 | bfd_vma ent; | |
90e3cdf2 | 3448 | |
5ef11c02 AM |
3449 | /* Ignore bogus symbols. */ |
3450 | if (syms[i]->value > opd->size - 8) | |
3451 | continue; | |
3452 | ||
699733f6 AM |
3453 | ent = bfd_get_64 (abfd, contents + syms[i]->value); |
3454 | if (!sym_exists_at (syms, opdsymend, symcount, -1, ent)) | |
3455 | { | |
3456 | ++count; | |
3457 | size += sizeof (asymbol); | |
3458 | size += strlen (syms[i]->name) + 2; | |
3459 | } | |
3460 | } | |
90e3cdf2 | 3461 | |
468392fb | 3462 | /* Get start of .glink stubs from DT_PPC64_GLINK. */ |
066ee829 AM |
3463 | if (dyn_count != 0 |
3464 | && (dynamic = bfd_get_section_by_name (abfd, ".dynamic")) != NULL) | |
468392fb AM |
3465 | { |
3466 | bfd_byte *dynbuf, *extdyn, *extdynend; | |
3467 | size_t extdynsize; | |
3468 | void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *); | |
3469 | ||
3470 | if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf)) | |
c4b0b099 | 3471 | goto free_contents_and_exit_err; |
468392fb AM |
3472 | |
3473 | extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn; | |
3474 | swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in; | |
3475 | ||
3476 | extdyn = dynbuf; | |
3477 | extdynend = extdyn + dynamic->size; | |
3478 | for (; extdyn < extdynend; extdyn += extdynsize) | |
3479 | { | |
3480 | Elf_Internal_Dyn dyn; | |
3481 | (*swap_dyn_in) (abfd, extdyn, &dyn); | |
3482 | ||
3483 | if (dyn.d_tag == DT_NULL) | |
3484 | break; | |
3485 | ||
3486 | if (dyn.d_tag == DT_PPC64_GLINK) | |
3487 | { | |
b9e5796b AM |
3488 | /* The first glink stub starts at offset 32; see |
3489 | comment in ppc64_elf_finish_dynamic_sections. */ | |
3490 | glink_vma = dyn.d_un.d_val + GLINK_CALL_STUB_SIZE - 8 * 4; | |
468392fb AM |
3491 | /* The .glink section usually does not survive the final |
3492 | link; search for the section (usually .text) where the | |
3493 | glink stubs now reside. */ | |
3494 | glink = bfd_sections_find_if (abfd, section_covers_vma, | |
3495 | &glink_vma); | |
3496 | break; | |
3497 | } | |
3498 | } | |
3499 | ||
3500 | free (dynbuf); | |
3501 | } | |
3502 | ||
3503 | if (glink != NULL) | |
3504 | { | |
3505 | /* Determine __glink trampoline by reading the relative branch | |
3506 | from the first glink stub. */ | |
3507 | bfd_byte buf[4]; | |
b9e5796b AM |
3508 | unsigned int off = 0; |
3509 | ||
3510 | while (bfd_get_section_contents (abfd, glink, buf, | |
3511 | glink_vma + off - glink->vma, 4)) | |
468392fb AM |
3512 | { |
3513 | unsigned int insn = bfd_get_32 (abfd, buf); | |
3514 | insn ^= B_DOT; | |
3515 | if ((insn & ~0x3fffffc) == 0) | |
b9e5796b AM |
3516 | { |
3517 | resolv_vma = glink_vma + off + (insn ^ 0x2000000) - 0x2000000; | |
3518 | break; | |
3519 | } | |
3520 | off += 4; | |
3521 | if (off > 4) | |
3522 | break; | |
468392fb AM |
3523 | } |
3524 | ||
3525 | if (resolv_vma) | |
3526 | size += sizeof (asymbol) + sizeof ("__glink_PLTresolve"); | |
468392fb | 3527 | |
066ee829 AM |
3528 | relplt = bfd_get_section_by_name (abfd, ".rela.plt"); |
3529 | if (relplt != NULL) | |
3530 | { | |
3531 | slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; | |
3532 | if (! (*slurp_relocs) (abfd, relplt, dyn_syms, TRUE)) | |
c4b0b099 | 3533 | goto free_contents_and_exit_err; |
68ffbac6 | 3534 | |
066ee829 AM |
3535 | plt_count = relplt->size / sizeof (Elf64_External_Rela); |
3536 | size += plt_count * sizeof (asymbol); | |
468392fb | 3537 | |
066ee829 AM |
3538 | p = relplt->relocation; |
3539 | for (i = 0; i < plt_count; i++, p++) | |
e054468f AM |
3540 | { |
3541 | size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt"); | |
3542 | if (p->addend != 0) | |
3543 | size += sizeof ("+0x") - 1 + 16; | |
3544 | } | |
066ee829 | 3545 | } |
468392fb AM |
3546 | } |
3547 | ||
c4b0b099 AM |
3548 | if (size == 0) |
3549 | goto free_contents_and_exit; | |
699733f6 AM |
3550 | s = *ret = bfd_malloc (size); |
3551 | if (s == NULL) | |
c4b0b099 | 3552 | goto free_contents_and_exit_err; |
90e3cdf2 | 3553 | |
468392fb | 3554 | names = (char *) (s + count + plt_count + (resolv_vma != 0)); |
90e3cdf2 | 3555 | |
699733f6 | 3556 | for (i = secsymend; i < opdsymend; ++i) |
90e3cdf2 | 3557 | { |
699733f6 | 3558 | bfd_vma ent; |
90e3cdf2 | 3559 | |
5ef11c02 AM |
3560 | if (syms[i]->value > opd->size - 8) |
3561 | continue; | |
3562 | ||
699733f6 AM |
3563 | ent = bfd_get_64 (abfd, contents + syms[i]->value); |
3564 | if (!sym_exists_at (syms, opdsymend, symcount, -1, ent)) | |
90e3cdf2 | 3565 | { |
c9727e01 | 3566 | long lo, hi; |
699733f6 | 3567 | size_t len; |
c9727e01 | 3568 | asection *sec = abfd->sections; |
90e3cdf2 | 3569 | |
699733f6 AM |
3570 | *s = *syms[i]; |
3571 | lo = codesecsym; | |
3572 | hi = codesecsymend; | |
3573 | while (lo < hi) | |
3574 | { | |
c9727e01 | 3575 | long mid = (lo + hi) >> 1; |
699733f6 AM |
3576 | if (syms[mid]->section->vma < ent) |
3577 | lo = mid + 1; | |
3578 | else if (syms[mid]->section->vma > ent) | |
3579 | hi = mid; | |
3580 | else | |
c9727e01 AM |
3581 | { |
3582 | sec = syms[mid]->section; | |
3583 | break; | |
3584 | } | |
699733f6 AM |
3585 | } |
3586 | ||
c9727e01 | 3587 | if (lo >= hi && lo > codesecsym) |
699733f6 | 3588 | sec = syms[lo - 1]->section; |
699733f6 AM |
3589 | |
3590 | for (; sec != NULL; sec = sec->next) | |
3591 | { | |
3592 | if (sec->vma > ent) | |
3593 | break; | |
63524580 JK |
3594 | /* SEC_LOAD may not be set if SEC is from a separate debug |
3595 | info file. */ | |
3596 | if ((sec->flags & SEC_ALLOC) == 0) | |
699733f6 AM |
3597 | break; |
3598 | if ((sec->flags & SEC_CODE) != 0) | |
3599 | s->section = sec; | |
3600 | } | |
6ba2a415 | 3601 | s->flags |= BSF_SYNTHETIC; |
699733f6 AM |
3602 | s->value = ent - s->section->vma; |
3603 | s->name = names; | |
3604 | *names++ = '.'; | |
3605 | len = strlen (syms[i]->name); | |
3606 | memcpy (names, syms[i]->name, len + 1); | |
3607 | names += len + 1; | |
6f610d07 UW |
3608 | /* Have udata.p point back to the original symbol this |
3609 | synthetic symbol was derived from. */ | |
3610 | s->udata.p = syms[i]; | |
699733f6 | 3611 | s++; |
90e3cdf2 | 3612 | } |
90e3cdf2 | 3613 | } |
699733f6 | 3614 | free (contents); |
468392fb AM |
3615 | |
3616 | if (glink != NULL && relplt != NULL) | |
3617 | { | |
3618 | if (resolv_vma) | |
3619 | { | |
3620 | /* Add a symbol for the main glink trampoline. */ | |
86a4952b | 3621 | memset (s, 0, sizeof *s); |
468392fb | 3622 | s->the_bfd = abfd; |
6ba2a415 | 3623 | s->flags = BSF_GLOBAL | BSF_SYNTHETIC; |
468392fb AM |
3624 | s->section = glink; |
3625 | s->value = resolv_vma - glink->vma; | |
3626 | s->name = names; | |
3627 | memcpy (names, "__glink_PLTresolve", sizeof ("__glink_PLTresolve")); | |
3628 | names += sizeof ("__glink_PLTresolve"); | |
3629 | s++; | |
3630 | count++; | |
3631 | } | |
3632 | ||
3633 | /* FIXME: It would be very much nicer to put sym@plt on the | |
3634 | stub rather than on the glink branch table entry. The | |
3635 | objdump disassembler would then use a sensible symbol | |
3636 | name on plt calls. The difficulty in doing so is | |
3637 | a) finding the stubs, and, | |
3638 | b) matching stubs against plt entries, and, | |
3639 | c) there can be multiple stubs for a given plt entry. | |
3640 | ||
3641 | Solving (a) could be done by code scanning, but older | |
3642 | ppc64 binaries used different stubs to current code. | |
3643 | (b) is the tricky one since you need to known the toc | |
3644 | pointer for at least one function that uses a pic stub to | |
3645 | be able to calculate the plt address referenced. | |
3646 | (c) means gdb would need to set multiple breakpoints (or | |
3647 | find the glink branch itself) when setting breakpoints | |
3648 | for pending shared library loads. */ | |
3649 | p = relplt->relocation; | |
3650 | for (i = 0; i < plt_count; i++, p++) | |
3651 | { | |
3652 | size_t len; | |
3653 | ||
3654 | *s = **p->sym_ptr_ptr; | |
3655 | /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since | |
3656 | we are defining a symbol, ensure one of them is set. */ | |
3657 | if ((s->flags & BSF_LOCAL) == 0) | |
3658 | s->flags |= BSF_GLOBAL; | |
6ba2a415 | 3659 | s->flags |= BSF_SYNTHETIC; |
468392fb AM |
3660 | s->section = glink; |
3661 | s->value = glink_vma - glink->vma; | |
3662 | s->name = names; | |
3663 | s->udata.p = NULL; | |
3664 | len = strlen ((*p->sym_ptr_ptr)->name); | |
3665 | memcpy (names, (*p->sym_ptr_ptr)->name, len); | |
3666 | names += len; | |
e054468f AM |
3667 | if (p->addend != 0) |
3668 | { | |
3669 | memcpy (names, "+0x", sizeof ("+0x") - 1); | |
3670 | names += sizeof ("+0x") - 1; | |
3671 | bfd_sprintf_vma (abfd, names, p->addend); | |
3672 | names += strlen (names); | |
3673 | } | |
468392fb AM |
3674 | memcpy (names, "@plt", sizeof ("@plt")); |
3675 | names += sizeof ("@plt"); | |
3676 | s++; | |
b9e5796b AM |
3677 | if (abi < 2) |
3678 | { | |
3679 | glink_vma += 8; | |
3680 | if (i >= 0x8000) | |
3681 | glink_vma += 4; | |
3682 | } | |
3683 | else | |
468392fb AM |
3684 | glink_vma += 4; |
3685 | } | |
3686 | count += plt_count; | |
3687 | } | |
90e3cdf2 JJ |
3688 | } |
3689 | ||
c9727e01 | 3690 | done: |
a7535cf3 | 3691 | free (syms); |
90e3cdf2 JJ |
3692 | return count; |
3693 | } | |
5bd4f169 | 3694 | \f |
65f38f15 AM |
3695 | /* The following functions are specific to the ELF linker, while |
3696 | functions above are used generally. Those named ppc64_elf_* are | |
3697 | called by the main ELF linker code. They appear in this file more | |
3698 | or less in the order in which they are called. eg. | |
3699 | ppc64_elf_check_relocs is called early in the link process, | |
3700 | ppc64_elf_finish_dynamic_sections is one of the last functions | |
e86ce104 AM |
3701 | called. |
3702 | ||
3703 | PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that | |
3704 | functions have both a function code symbol and a function descriptor | |
3705 | symbol. A call to foo in a relocatable object file looks like: | |
3706 | ||
3707 | . .text | |
3708 | . x: | |
3709 | . bl .foo | |
3710 | . nop | |
3711 | ||
3712 | The function definition in another object file might be: | |
3713 | ||
3714 | . .section .opd | |
3715 | . foo: .quad .foo | |
3716 | . .quad .TOC.@tocbase | |
3717 | . .quad 0 | |
3718 | . | |
3719 | . .text | |
3720 | . .foo: blr | |
3721 | ||
3722 | When the linker resolves the call during a static link, the branch | |
3723 | unsurprisingly just goes to .foo and the .opd information is unused. | |
3724 | If the function definition is in a shared library, things are a little | |
3725 | different: The call goes via a plt call stub, the opd information gets | |
3726 | copied to the plt, and the linker patches the nop. | |
3727 | ||
3728 | . x: | |
3729 | . bl .foo_stub | |
3730 | . ld 2,40(1) | |
3731 | . | |
3732 | . | |
3733 | . .foo_stub: | |
71a39c98 AM |
3734 | . std 2,40(1) # in practice, the call stub |
3735 | . addis 11,2,Lfoo@toc@ha # is slightly optimized, but | |
3736 | . addi 11,11,Lfoo@toc@l # this is the general idea | |
3737 | . ld 12,0(11) | |
3738 | . ld 2,8(11) | |
3739 | . mtctr 12 | |
3740 | . ld 11,16(11) | |
e86ce104 AM |
3741 | . bctr |
3742 | . | |
3743 | . .section .plt | |
3744 | . Lfoo: reloc (R_PPC64_JMP_SLOT, foo) | |
3745 | ||
3746 | The "reloc ()" notation is supposed to indicate that the linker emits | |
3747 | an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd | |
3748 | copying. | |
3749 | ||
3750 | What are the difficulties here? Well, firstly, the relocations | |
3751 | examined by the linker in check_relocs are against the function code | |
3752 | sym .foo, while the dynamic relocation in the plt is emitted against | |
3753 | the function descriptor symbol, foo. Somewhere along the line, we need | |
3754 | to carefully copy dynamic link information from one symbol to the other. | |
3755 | Secondly, the generic part of the elf linker will make .foo a dynamic | |
3756 | symbol as is normal for most other backends. We need foo dynamic | |
3757 | instead, at least for an application final link. However, when | |
3758 | creating a shared library containing foo, we need to have both symbols | |
3759 | dynamic so that references to .foo are satisfied during the early | |
3760 | stages of linking. Otherwise the linker might decide to pull in a | |
8387904d AM |
3761 | definition from some other object, eg. a static library. |
3762 | ||
3763 | Update: As of August 2004, we support a new convention. Function | |
3764 | calls may use the function descriptor symbol, ie. "bl foo". This | |
3765 | behaves exactly as "bl .foo". */ | |
65f38f15 | 3766 | |
1d483afe | 3767 | /* Of those relocs that might be copied as dynamic relocs, this function |
58ac9f71 AM |
3768 | selects those that must be copied when linking a shared library, |
3769 | even when the symbol is local. */ | |
65f38f15 | 3770 | |
1d483afe AM |
3771 | static int |
3772 | must_be_dyn_reloc (struct bfd_link_info *info, | |
3773 | enum elf_ppc64_reloc_type r_type) | |
3774 | { | |
3775 | switch (r_type) | |
3776 | { | |
3777 | default: | |
3778 | return 1; | |
3779 | ||
3780 | case R_PPC64_REL32: | |
3781 | case R_PPC64_REL64: | |
3782 | case R_PPC64_REL30: | |
3783 | return 0; | |
3784 | ||
3785 | case R_PPC64_TPREL16: | |
3786 | case R_PPC64_TPREL16_LO: | |
3787 | case R_PPC64_TPREL16_HI: | |
3788 | case R_PPC64_TPREL16_HA: | |
3789 | case R_PPC64_TPREL16_DS: | |
3790 | case R_PPC64_TPREL16_LO_DS: | |
f9c6b907 AM |
3791 | case R_PPC64_TPREL16_HIGH: |
3792 | case R_PPC64_TPREL16_HIGHA: | |
1d483afe AM |
3793 | case R_PPC64_TPREL16_HIGHER: |
3794 | case R_PPC64_TPREL16_HIGHERA: | |
3795 | case R_PPC64_TPREL16_HIGHEST: | |
3796 | case R_PPC64_TPREL16_HIGHESTA: | |
3797 | case R_PPC64_TPREL64: | |
0e1862bb | 3798 | return !bfd_link_executable (info); |
1d483afe AM |
3799 | } |
3800 | } | |
65f38f15 | 3801 | |
f4656909 AM |
3802 | /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid |
3803 | copying dynamic variables from a shared lib into an app's dynbss | |
3804 | section, and instead use a dynamic relocation to point into the | |
5d35169e AM |
3805 | shared lib. With code that gcc generates, it's vital that this be |
3806 | enabled; In the PowerPC64 ABI, the address of a function is actually | |
3807 | the address of a function descriptor, which resides in the .opd | |
3808 | section. gcc uses the descriptor directly rather than going via the | |
3809 | GOT as some other ABI's do, which means that initialized function | |
3810 | pointers must reference the descriptor. Thus, a function pointer | |
3811 | initialized to the address of a function in a shared library will | |
3812 | either require a copy reloc, or a dynamic reloc. Using a copy reloc | |
4cc11e76 | 3813 | redefines the function descriptor symbol to point to the copy. This |
5d35169e AM |
3814 | presents a problem as a plt entry for that function is also |
3815 | initialized from the function descriptor symbol and the copy reloc | |
3816 | may not be initialized first. */ | |
a23b6845 | 3817 | #define ELIMINATE_COPY_RELOCS 1 |
f4656909 | 3818 | |
721956f4 | 3819 | /* Section name for stubs is the associated section name plus this |
29942be8 NC |
3820 | string. */ |
3821 | #define STUB_SUFFIX ".stub" | |
721956f4 AM |
3822 | |
3823 | /* Linker stubs. | |
3824 | ppc_stub_long_branch: | |
3825 | Used when a 14 bit branch (or even a 24 bit branch) can't reach its | |
3826 | destination, but a 24 bit branch in a stub section will reach. | |
3827 | . b dest | |
3828 | ||
3829 | ppc_stub_plt_branch: | |
3830 | Similar to the above, but a 24 bit branch in the stub section won't | |
3831 | reach its destination. | |
71a39c98 AM |
3832 | . addis %r11,%r2,xxx@toc@ha |
3833 | . ld %r12,xxx@toc@l(%r11) | |
3834 | . mtctr %r12 | |
721956f4 AM |
3835 | . bctr |
3836 | ||
3837 | ppc_stub_plt_call: | |
2c66dc6c AM |
3838 | Used to call a function in a shared library. If it so happens that |
3839 | the plt entry referenced crosses a 64k boundary, then an extra | |
71a39c98 | 3840 | "addi %r11,%r11,xxx@toc@l" will be inserted before the "mtctr". |
721956f4 | 3841 | . std %r2,40(%r1) |
71a39c98 AM |
3842 | . addis %r11,%r2,xxx@toc@ha |
3843 | . ld %r12,xxx+0@toc@l(%r11) | |
3844 | . mtctr %r12 | |
3845 | . ld %r2,xxx+8@toc@l(%r11) | |
3846 | . ld %r11,xxx+16@toc@l(%r11) | |
721956f4 | 3847 | . bctr |
ad8e1ba5 AM |
3848 | |
3849 | ppc_stub_long_branch and ppc_stub_plt_branch may also have additional | |
3850 | code to adjust the value and save r2 to support multiple toc sections. | |
3851 | A ppc_stub_long_branch with an r2 offset looks like: | |
3852 | . std %r2,40(%r1) | |
3853 | . addis %r2,%r2,off@ha | |
3854 | . addi %r2,%r2,off@l | |
3855 | . b dest | |
3856 | ||
3857 | A ppc_stub_plt_branch with an r2 offset looks like: | |
3858 | . std %r2,40(%r1) | |
71a39c98 AM |
3859 | . addis %r11,%r2,xxx@toc@ha |
3860 | . ld %r12,xxx@toc@l(%r11) | |
ad8e1ba5 AM |
3861 | . addis %r2,%r2,off@ha |
3862 | . addi %r2,%r2,off@l | |
71a39c98 | 3863 | . mtctr %r12 |
ad8e1ba5 | 3864 | . bctr |
ac2df442 AM |
3865 | |
3866 | In cases where the "addis" instruction would add zero, the "addis" is | |
3867 | omitted and following instructions modified slightly in some cases. | |
721956f4 AM |
3868 | */ |
3869 | ||
3870 | enum ppc_stub_type { | |
3871 | ppc_stub_none, | |
3872 | ppc_stub_long_branch, | |
ad8e1ba5 | 3873 | ppc_stub_long_branch_r2off, |
721956f4 | 3874 | ppc_stub_plt_branch, |
ad8e1ba5 | 3875 | ppc_stub_plt_branch_r2off, |
794e51c0 | 3876 | ppc_stub_plt_call, |
7341d5e2 | 3877 | ppc_stub_plt_call_r2save, |
a4b6fadd AM |
3878 | ppc_stub_global_entry, |
3879 | ppc_stub_save_res | |
721956f4 AM |
3880 | }; |
3881 | ||
6f20ed8a AM |
3882 | /* Information on stub grouping. */ |
3883 | struct map_stub | |
3884 | { | |
3885 | /* The stub section. */ | |
3886 | asection *stub_sec; | |
3887 | /* This is the section to which stubs in the group will be attached. */ | |
3888 | asection *link_sec; | |
a4b6fadd AM |
3889 | /* Next group. */ |
3890 | struct map_stub *next; | |
3891 | /* Whether to emit a copy of register save/restore functions in this | |
3892 | group. */ | |
3893 | int needs_save_res; | |
6f20ed8a AM |
3894 | }; |
3895 | ||
721956f4 AM |
3896 | struct ppc_stub_hash_entry { |
3897 | ||
3898 | /* Base hash table entry structure. */ | |
3899 | struct bfd_hash_entry root; | |
3900 | ||
ad8e1ba5 AM |
3901 | enum ppc_stub_type stub_type; |
3902 | ||
6f20ed8a AM |
3903 | /* Group information. */ |
3904 | struct map_stub *group; | |
721956f4 AM |
3905 | |
3906 | /* Offset within stub_sec of the beginning of this stub. */ | |
3907 | bfd_vma stub_offset; | |
3908 | ||
3909 | /* Given the symbol's value and its section we can determine its final | |
3910 | value when building the stubs (so the stub knows where to jump. */ | |
3911 | bfd_vma target_value; | |
3912 | asection *target_section; | |
3913 | ||
721956f4 AM |
3914 | /* The symbol table entry, if any, that this was derived from. */ |
3915 | struct ppc_link_hash_entry *h; | |
e054468f | 3916 | struct plt_entry *plt_ent; |
721956f4 | 3917 | |
6911b7dc AM |
3918 | /* Symbol st_other. */ |
3919 | unsigned char other; | |
721956f4 AM |
3920 | }; |
3921 | ||
3922 | struct ppc_branch_hash_entry { | |
3923 | ||
3924 | /* Base hash table entry structure. */ | |
3925 | struct bfd_hash_entry root; | |
3926 | ||
c456f082 | 3927 | /* Offset within branch lookup table. */ |
721956f4 AM |
3928 | unsigned int offset; |
3929 | ||
3930 | /* Generation marker. */ | |
3931 | unsigned int iter; | |
3932 | }; | |
65f38f15 | 3933 | |
19e08130 AM |
3934 | /* Used to track dynamic relocations for local symbols. */ |
3935 | struct ppc_dyn_relocs | |
3936 | { | |
3937 | struct ppc_dyn_relocs *next; | |
3938 | ||
3939 | /* The input section of the reloc. */ | |
3940 | asection *sec; | |
3941 | ||
3942 | /* Total number of relocs copied for the input section. */ | |
3943 | unsigned int count : 31; | |
3944 | ||
3945 | /* Whether this entry is for STT_GNU_IFUNC symbols. */ | |
3946 | unsigned int ifunc : 1; | |
3947 | }; | |
3948 | ||
65f38f15 AM |
3949 | struct ppc_link_hash_entry |
3950 | { | |
3951 | struct elf_link_hash_entry elf; | |
3952 | ||
b3fac117 AM |
3953 | union { |
3954 | /* A pointer to the most recently used stub hash entry against this | |
3955 | symbol. */ | |
3956 | struct ppc_stub_hash_entry *stub_cache; | |
3957 | ||
3958 | /* A pointer to the next symbol starting with a '.' */ | |
3959 | struct ppc_link_hash_entry *next_dot_sym; | |
3960 | } u; | |
721956f4 | 3961 | |
65f38f15 | 3962 | /* Track dynamic relocs copied for this symbol. */ |
6061a67d | 3963 | struct elf_dyn_relocs *dyn_relocs; |
e86ce104 | 3964 | |
d311bc8b AM |
3965 | /* Chain of aliases referring to a weakdef. */ |
3966 | struct ppc_link_hash_entry *weakref; | |
3967 | ||
721956f4 | 3968 | /* Link between function code and descriptor symbols. */ |
34814b9f | 3969 | struct ppc_link_hash_entry *oh; |
721956f4 | 3970 | |
e86ce104 AM |
3971 | /* Flag function code and descriptor symbols. */ |
3972 | unsigned int is_func:1; | |
3973 | unsigned int is_func_descriptor:1; | |
908b32fc | 3974 | unsigned int fake:1; |
411e1bfb | 3975 | |
c5614fa4 AM |
3976 | /* Whether global opd/toc sym has been adjusted or not. |
3977 | After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag | |
3978 | should be set for all globals defined in any opd/toc section. */ | |
754021d0 AM |
3979 | unsigned int adjust_done:1; |
3980 | ||
99877b66 AM |
3981 | /* Set if we twiddled this symbol to weak at some stage. */ |
3982 | unsigned int was_undefined:1; | |
3983 | ||
a4b6fadd AM |
3984 | /* Set if this is an out-of-line register save/restore function, |
3985 | with non-standard calling convention. */ | |
3986 | unsigned int save_res:1; | |
3987 | ||
411e1bfb | 3988 | /* Contexts in which symbol is used in the GOT (or TOC). |
e7b938ca AM |
3989 | TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the |
3990 | corresponding relocs are encountered during check_relocs. | |
3991 | tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to | |
3992 | indicate the corresponding GOT entry type is not needed. | |
3993 | tls_optimize may also set TLS_TPRELGD when a GD reloc turns into | |
3994 | a TPREL one. We use a separate flag rather than setting TPREL | |
3995 | just for convenience in distinguishing the two cases. */ | |
3996 | #define TLS_GD 1 /* GD reloc. */ | |
3997 | #define TLS_LD 2 /* LD reloc. */ | |
3998 | #define TLS_TPREL 4 /* TPREL reloc, => IE. */ | |
3999 | #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */ | |
4000 | #define TLS_TLS 16 /* Any TLS reloc. */ | |
4001 | #define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */ | |
4002 | #define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */ | |
e054468f | 4003 | #define PLT_IFUNC 128 /* STT_GNU_IFUNC. */ |
f961d9dd | 4004 | unsigned char tls_mask; |
65f38f15 AM |
4005 | }; |
4006 | ||
4007 | /* ppc64 ELF linker hash table. */ | |
4008 | ||
4009 | struct ppc_link_hash_table | |
4010 | { | |
4011 | struct elf_link_hash_table elf; | |
4012 | ||
721956f4 AM |
4013 | /* The stub hash table. */ |
4014 | struct bfd_hash_table stub_hash_table; | |
4015 | ||
4016 | /* Another hash table for plt_branch stubs. */ | |
4017 | struct bfd_hash_table branch_hash_table; | |
4018 | ||
3b421ab3 AM |
4019 | /* Hash table for function prologue tocsave. */ |
4020 | htab_t tocsave_htab; | |
4021 | ||
e7d1c40c AM |
4022 | /* Various options and other info passed from the linker. */ |
4023 | struct ppc64_elf_params *params; | |
721956f4 | 4024 | |
6f20ed8a AM |
4025 | /* The size of sec_info below. */ |
4026 | unsigned int sec_info_arr_size; | |
4027 | ||
4028 | /* Per-section array of extra section info. Done this way rather | |
4029 | than as part of ppc64_elf_section_data so we have the info for | |
4030 | non-ppc64 sections. */ | |
4031 | struct | |
4032 | { | |
4033 | /* Along with elf_gp, specifies the TOC pointer used by this section. */ | |
ad8e1ba5 | 4034 | bfd_vma toc_off; |
6f20ed8a AM |
4035 | |
4036 | union | |
4037 | { | |
4038 | /* The section group that this section belongs to. */ | |
4039 | struct map_stub *group; | |
4040 | /* A temp section list pointer. */ | |
4041 | asection *list; | |
4042 | } u; | |
4043 | } *sec_info; | |
721956f4 | 4044 | |
a4b6fadd AM |
4045 | /* Linked list of groups. */ |
4046 | struct map_stub *group; | |
4047 | ||
ad8e1ba5 AM |
4048 | /* Temp used when calculating TOC pointers. */ |
4049 | bfd_vma toc_curr; | |
bf102f86 AM |
4050 | bfd *toc_bfd; |
4051 | asection *toc_first_sec; | |
ad8e1ba5 | 4052 | |
b3fac117 AM |
4053 | /* Used when adding symbols. */ |
4054 | struct ppc_link_hash_entry *dot_syms; | |
4055 | ||
33e44f2e | 4056 | /* Shortcuts to get to dynamic linker sections. */ |
4ce794b7 AM |
4057 | asection *dynbss; |
4058 | asection *relbss; | |
4059 | asection *glink; | |
82bd7b59 | 4060 | asection *sfpr; |
4ce794b7 AM |
4061 | asection *brlt; |
4062 | asection *relbrlt; | |
58d180e8 | 4063 | asection *glink_eh_frame; |
ec338859 | 4064 | |
8387904d AM |
4065 | /* Shortcut to .__tls_get_addr and __tls_get_addr. */ |
4066 | struct ppc_link_hash_entry *tls_get_addr; | |
4067 | struct ppc_link_hash_entry *tls_get_addr_fd; | |
411e1bfb | 4068 | |
927be08e AM |
4069 | /* The size of reliplt used by got entry relocs. */ |
4070 | bfd_size_type got_reli_size; | |
4071 | ||
9b5ecbd0 | 4072 | /* Statistics. */ |
7341d5e2 | 4073 | unsigned long stub_count[ppc_stub_global_entry]; |
9b5ecbd0 | 4074 | |
ee75fd95 AM |
4075 | /* Number of stubs against global syms. */ |
4076 | unsigned long stub_globals; | |
4077 | ||
ee67d69a AM |
4078 | /* Set if we're linking code with function descriptors. */ |
4079 | unsigned int opd_abi:1; | |
4080 | ||
4c52953f | 4081 | /* Support for multiple toc sections. */ |
33c0ec9d | 4082 | unsigned int do_multi_toc:1; |
4c52953f | 4083 | unsigned int multi_toc_needed:1; |
927be08e | 4084 | unsigned int second_toc_pass:1; |
67f0cbdb | 4085 | unsigned int do_toc_opt:1; |
4c52953f | 4086 | |
5d1634d7 | 4087 | /* Set on error. */ |
99877b66 | 4088 | unsigned int stub_error:1; |
721956f4 | 4089 | |
f6c7c3e8 | 4090 | /* Temp used by ppc64_elf_before_check_relocs. */ |
99877b66 | 4091 | unsigned int twiddled_syms:1; |
721956f4 AM |
4092 | |
4093 | /* Incremented every time we size stubs. */ | |
4094 | unsigned int stub_iteration; | |
5d1634d7 | 4095 | |
87d72d41 AM |
4096 | /* Small local sym cache. */ |
4097 | struct sym_cache sym_cache; | |
65f38f15 AM |
4098 | }; |
4099 | ||
4c52953f AM |
4100 | /* Rename some of the generic section flags to better document how they |
4101 | are used here. */ | |
b0dddeec AM |
4102 | |
4103 | /* Nonzero if this section has TLS related relocations. */ | |
4104 | #define has_tls_reloc sec_flg0 | |
4105 | ||
4106 | /* Nonzero if this section has a call to __tls_get_addr. */ | |
4107 | #define has_tls_get_addr_call sec_flg1 | |
4108 | ||
4109 | /* Nonzero if this section has any toc or got relocs. */ | |
4110 | #define has_toc_reloc sec_flg2 | |
4111 | ||
4112 | /* Nonzero if this section has a call to another section that uses | |
4113 | the toc or got. */ | |
d77c8a4b | 4114 | #define makes_toc_func_call sec_flg3 |
b0dddeec AM |
4115 | |
4116 | /* Recursion protection when determining above flag. */ | |
d77c8a4b | 4117 | #define call_check_in_progress sec_flg4 |
70cc837d | 4118 | #define call_check_done sec_flg5 |
4c52953f | 4119 | |
65f38f15 AM |
4120 | /* Get the ppc64 ELF linker hash table from a link_info structure. */ |
4121 | ||
4122 | #define ppc_hash_table(p) \ | |
4dfe6ac6 NC |
4123 | (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \ |
4124 | == PPC64_ELF_DATA ? ((struct ppc_link_hash_table *) ((p)->hash)) : NULL) | |
65f38f15 | 4125 | |
721956f4 AM |
4126 | #define ppc_stub_hash_lookup(table, string, create, copy) \ |
4127 | ((struct ppc_stub_hash_entry *) \ | |
4128 | bfd_hash_lookup ((table), (string), (create), (copy))) | |
4129 | ||
4130 | #define ppc_branch_hash_lookup(table, string, create, copy) \ | |
4131 | ((struct ppc_branch_hash_entry *) \ | |
4132 | bfd_hash_lookup ((table), (string), (create), (copy))) | |
4133 | ||
4134 | /* Create an entry in the stub hash table. */ | |
4135 | ||
4136 | static struct bfd_hash_entry * | |
4ce794b7 AM |
4137 | stub_hash_newfunc (struct bfd_hash_entry *entry, |
4138 | struct bfd_hash_table *table, | |
4139 | const char *string) | |
721956f4 AM |
4140 | { |
4141 | /* Allocate the structure if it has not already been allocated by a | |
4142 | subclass. */ | |
4143 | if (entry == NULL) | |
4144 | { | |
4145 | entry = bfd_hash_allocate (table, sizeof (struct ppc_stub_hash_entry)); | |
4146 | if (entry == NULL) | |
4147 | return entry; | |
4148 | } | |
4149 | ||
4150 | /* Call the allocation method of the superclass. */ | |
4151 | entry = bfd_hash_newfunc (entry, table, string); | |
4152 | if (entry != NULL) | |
4153 | { | |
4154 | struct ppc_stub_hash_entry *eh; | |
4155 | ||
4156 | /* Initialize the local fields. */ | |
4157 | eh = (struct ppc_stub_hash_entry *) entry; | |
ad8e1ba5 | 4158 | eh->stub_type = ppc_stub_none; |
6f20ed8a | 4159 | eh->group = NULL; |
721956f4 AM |
4160 | eh->stub_offset = 0; |
4161 | eh->target_value = 0; | |
4162 | eh->target_section = NULL; | |
721956f4 | 4163 | eh->h = NULL; |
6911b7dc | 4164 | eh->plt_ent = NULL; |
6911b7dc | 4165 | eh->other = 0; |
721956f4 AM |
4166 | } |
4167 | ||
4168 | return entry; | |
4169 | } | |
4170 | ||
4171 | /* Create an entry in the branch hash table. */ | |
4172 | ||
4173 | static struct bfd_hash_entry * | |
4ce794b7 AM |
4174 | branch_hash_newfunc (struct bfd_hash_entry *entry, |
4175 | struct bfd_hash_table *table, | |
4176 | const char *string) | |
721956f4 AM |
4177 | { |
4178 | /* Allocate the structure if it has not already been allocated by a | |
4179 | subclass. */ | |
4180 | if (entry == NULL) | |
4181 | { | |
4182 | entry = bfd_hash_allocate (table, sizeof (struct ppc_branch_hash_entry)); | |
4183 | if (entry == NULL) | |
4184 | return entry; | |
4185 | } | |
4186 | ||
4187 | /* Call the allocation method of the superclass. */ | |
4188 | entry = bfd_hash_newfunc (entry, table, string); | |
4189 | if (entry != NULL) | |
4190 | { | |
4191 | struct ppc_branch_hash_entry *eh; | |
4192 | ||
4193 | /* Initialize the local fields. */ | |
4194 | eh = (struct ppc_branch_hash_entry *) entry; | |
4195 | eh->offset = 0; | |
4196 | eh->iter = 0; | |
4197 | } | |
4198 | ||
4199 | return entry; | |
4200 | } | |
4201 | ||
65f38f15 AM |
4202 | /* Create an entry in a ppc64 ELF linker hash table. */ |
4203 | ||
4204 | static struct bfd_hash_entry * | |
4ce794b7 AM |
4205 | link_hash_newfunc (struct bfd_hash_entry *entry, |
4206 | struct bfd_hash_table *table, | |
4207 | const char *string) | |
65f38f15 AM |
4208 | { |
4209 | /* Allocate the structure if it has not already been allocated by a | |
4210 | subclass. */ | |
4211 | if (entry == NULL) | |
4212 | { | |
4213 | entry = bfd_hash_allocate (table, sizeof (struct ppc_link_hash_entry)); | |
4214 | if (entry == NULL) | |
4215 | return entry; | |
4216 | } | |
4217 | ||
4218 | /* Call the allocation method of the superclass. */ | |
4219 | entry = _bfd_elf_link_hash_newfunc (entry, table, string); | |
4220 | if (entry != NULL) | |
4221 | { | |
4222 | struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) entry; | |
4223 | ||
b3fac117 | 4224 | memset (&eh->u.stub_cache, 0, |
908b32fc | 4225 | (sizeof (struct ppc_link_hash_entry) |
b3fac117 AM |
4226 | - offsetof (struct ppc_link_hash_entry, u.stub_cache))); |
4227 | ||
4228 | /* When making function calls, old ABI code references function entry | |
4229 | points (dot symbols), while new ABI code references the function | |
4230 | descriptor symbol. We need to make any combination of reference and | |
4231 | definition work together, without breaking archive linking. | |
4232 | ||
4233 | For a defined function "foo" and an undefined call to "bar": | |
4234 | An old object defines "foo" and ".foo", references ".bar" (possibly | |
4235 | "bar" too). | |
4236 | A new object defines "foo" and references "bar". | |
4237 | ||
4238 | A new object thus has no problem with its undefined symbols being | |
4239 | satisfied by definitions in an old object. On the other hand, the | |
4240 | old object won't have ".bar" satisfied by a new object. | |
4241 | ||
4242 | Keep a list of newly added dot-symbols. */ | |
4243 | ||
4244 | if (string[0] == '.') | |
4245 | { | |
4246 | struct ppc_link_hash_table *htab; | |
4247 | ||
4248 | htab = (struct ppc_link_hash_table *) table; | |
4249 | eh->u.next_dot_sym = htab->dot_syms; | |
4250 | htab->dot_syms = eh; | |
4251 | } | |
65f38f15 AM |
4252 | } |
4253 | ||
4254 | return entry; | |
4255 | } | |
4256 | ||
3b421ab3 AM |
4257 | struct tocsave_entry { |
4258 | asection *sec; | |
4259 | bfd_vma offset; | |
4260 | }; | |
4261 | ||
4262 | static hashval_t | |
4263 | tocsave_htab_hash (const void *p) | |
4264 | { | |
4265 | const struct tocsave_entry *e = (const struct tocsave_entry *) p; | |
4266 | return ((bfd_vma)(intptr_t) e->sec ^ e->offset) >> 3; | |
4267 | } | |
4268 | ||
4269 | static int | |
4270 | tocsave_htab_eq (const void *p1, const void *p2) | |
4271 | { | |
4272 | const struct tocsave_entry *e1 = (const struct tocsave_entry *) p1; | |
4273 | const struct tocsave_entry *e2 = (const struct tocsave_entry *) p2; | |
4274 | return e1->sec == e2->sec && e1->offset == e2->offset; | |
4275 | } | |
4276 | ||
68faa637 AM |
4277 | /* Destroy a ppc64 ELF linker hash table. */ |
4278 | ||
4279 | static void | |
d495ab0d | 4280 | ppc64_elf_link_hash_table_free (bfd *obfd) |
68faa637 | 4281 | { |
d495ab0d | 4282 | struct ppc_link_hash_table *htab; |
68faa637 | 4283 | |
d495ab0d | 4284 | htab = (struct ppc_link_hash_table *) obfd->link.hash; |
68faa637 AM |
4285 | if (htab->tocsave_htab) |
4286 | htab_delete (htab->tocsave_htab); | |
d495ab0d AM |
4287 | bfd_hash_table_free (&htab->branch_hash_table); |
4288 | bfd_hash_table_free (&htab->stub_hash_table); | |
4289 | _bfd_elf_link_hash_table_free (obfd); | |
68faa637 AM |
4290 | } |
4291 | ||
65f38f15 AM |
4292 | /* Create a ppc64 ELF linker hash table. */ |
4293 | ||
4294 | static struct bfd_link_hash_table * | |
4ce794b7 | 4295 | ppc64_elf_link_hash_table_create (bfd *abfd) |
65f38f15 AM |
4296 | { |
4297 | struct ppc_link_hash_table *htab; | |
4298 | bfd_size_type amt = sizeof (struct ppc_link_hash_table); | |
4299 | ||
4ce794b7 | 4300 | htab = bfd_zmalloc (amt); |
65f38f15 AM |
4301 | if (htab == NULL) |
4302 | return NULL; | |
4303 | ||
66eb6687 | 4304 | if (!_bfd_elf_link_hash_table_init (&htab->elf, abfd, link_hash_newfunc, |
4dfe6ac6 NC |
4305 | sizeof (struct ppc_link_hash_entry), |
4306 | PPC64_ELF_DATA)) | |
65f38f15 | 4307 | { |
e2d34d7d | 4308 | free (htab); |
65f38f15 AM |
4309 | return NULL; |
4310 | } | |
4311 | ||
721956f4 | 4312 | /* Init the stub hash table too. */ |
66eb6687 AM |
4313 | if (!bfd_hash_table_init (&htab->stub_hash_table, stub_hash_newfunc, |
4314 | sizeof (struct ppc_stub_hash_entry))) | |
2915c55b | 4315 | { |
d495ab0d | 4316 | _bfd_elf_link_hash_table_free (abfd); |
2915c55b JK |
4317 | return NULL; |
4318 | } | |
721956f4 AM |
4319 | |
4320 | /* And the branch hash table. */ | |
66eb6687 AM |
4321 | if (!bfd_hash_table_init (&htab->branch_hash_table, branch_hash_newfunc, |
4322 | sizeof (struct ppc_branch_hash_entry))) | |
2915c55b JK |
4323 | { |
4324 | bfd_hash_table_free (&htab->stub_hash_table); | |
d495ab0d | 4325 | _bfd_elf_link_hash_table_free (abfd); |
2915c55b JK |
4326 | return NULL; |
4327 | } | |
721956f4 | 4328 | |
3b421ab3 AM |
4329 | htab->tocsave_htab = htab_try_create (1024, |
4330 | tocsave_htab_hash, | |
4331 | tocsave_htab_eq, | |
4332 | NULL); | |
4333 | if (htab->tocsave_htab == NULL) | |
2915c55b | 4334 | { |
d495ab0d | 4335 | ppc64_elf_link_hash_table_free (abfd); |
2915c55b JK |
4336 | return NULL; |
4337 | } | |
d495ab0d | 4338 | htab->elf.root.hash_table_free = ppc64_elf_link_hash_table_free; |
3b421ab3 | 4339 | |
3254fd24 AM |
4340 | /* Initializing two fields of the union is just cosmetic. We really |
4341 | only care about glist, but when compiled on a 32-bit host the | |
4342 | bfd_vma fields are larger. Setting the bfd_vma to zero makes | |
4343 | debugger inspection of these fields look nicer. */ | |
a6aa5195 AM |
4344 | htab->elf.init_got_refcount.refcount = 0; |
4345 | htab->elf.init_got_refcount.glist = NULL; | |
4346 | htab->elf.init_plt_refcount.refcount = 0; | |
4347 | htab->elf.init_plt_refcount.glist = NULL; | |
4348 | htab->elf.init_got_offset.offset = 0; | |
4349 | htab->elf.init_got_offset.glist = NULL; | |
4350 | htab->elf.init_plt_offset.offset = 0; | |
4351 | htab->elf.init_plt_offset.glist = NULL; | |
3254fd24 | 4352 | |
65f38f15 AM |
4353 | return &htab->elf.root; |
4354 | } | |
4355 | ||
bfeb4a28 AM |
4356 | /* Create sections for linker generated code. */ |
4357 | ||
4358 | static bfd_boolean | |
4359 | create_linkage_sections (bfd *dynobj, struct bfd_link_info *info) | |
4360 | { | |
4361 | struct ppc_link_hash_table *htab; | |
4362 | flagword flags; | |
4363 | ||
4364 | htab = ppc_hash_table (info); | |
4365 | ||
bfeb4a28 AM |
4366 | flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY |
4367 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
b32547cd AM |
4368 | if (htab->params->save_restore_funcs) |
4369 | { | |
4370 | /* Create .sfpr for code to save and restore fp regs. */ | |
4371 | htab->sfpr = bfd_make_section_anyway_with_flags (dynobj, ".sfpr", | |
4372 | flags); | |
4373 | if (htab->sfpr == NULL | |
4374 | || ! bfd_set_section_alignment (dynobj, htab->sfpr, 2)) | |
4375 | return FALSE; | |
4376 | } | |
4377 | ||
4378 | if (bfd_link_relocatable (info)) | |
4379 | return TRUE; | |
bfeb4a28 AM |
4380 | |
4381 | /* Create .glink for lazy dynamic linking support. */ | |
4382 | htab->glink = bfd_make_section_anyway_with_flags (dynobj, ".glink", | |
4383 | flags); | |
4384 | if (htab->glink == NULL | |
4385 | || ! bfd_set_section_alignment (dynobj, htab->glink, 3)) | |
4386 | return FALSE; | |
4387 | ||
4388 | if (!info->no_ld_generated_unwind_info) | |
4389 | { | |
4390 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS | |
4391 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
4392 | htab->glink_eh_frame = bfd_make_section_anyway_with_flags (dynobj, | |
4393 | ".eh_frame", | |
4394 | flags); | |
4395 | if (htab->glink_eh_frame == NULL | |
4396 | || !bfd_set_section_alignment (dynobj, htab->glink_eh_frame, 2)) | |
4397 | return FALSE; | |
4398 | } | |
4399 | ||
4400 | flags = SEC_ALLOC | SEC_LINKER_CREATED; | |
33e44f2e AM |
4401 | htab->elf.iplt = bfd_make_section_anyway_with_flags (dynobj, ".iplt", flags); |
4402 | if (htab->elf.iplt == NULL | |
4403 | || ! bfd_set_section_alignment (dynobj, htab->elf.iplt, 3)) | |
bfeb4a28 AM |
4404 | return FALSE; |
4405 | ||
4406 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | |
4407 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
33e44f2e AM |
4408 | htab->elf.irelplt |
4409 | = bfd_make_section_anyway_with_flags (dynobj, ".rela.iplt", flags); | |
4410 | if (htab->elf.irelplt == NULL | |
4411 | || ! bfd_set_section_alignment (dynobj, htab->elf.irelplt, 3)) | |
bfeb4a28 AM |
4412 | return FALSE; |
4413 | ||
4414 | /* Create branch lookup table for plt_branch stubs. */ | |
4415 | flags = (SEC_ALLOC | SEC_LOAD | |
4416 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
4417 | htab->brlt = bfd_make_section_anyway_with_flags (dynobj, ".branch_lt", | |
4418 | flags); | |
4419 | if (htab->brlt == NULL | |
4420 | || ! bfd_set_section_alignment (dynobj, htab->brlt, 3)) | |
4421 | return FALSE; | |
4422 | ||
0e1862bb | 4423 | if (!bfd_link_pic (info)) |
bfeb4a28 AM |
4424 | return TRUE; |
4425 | ||
4426 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | |
4427 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
4428 | htab->relbrlt = bfd_make_section_anyway_with_flags (dynobj, | |
4429 | ".rela.branch_lt", | |
4430 | flags); | |
4431 | if (htab->relbrlt == NULL | |
4432 | || ! bfd_set_section_alignment (dynobj, htab->relbrlt, 3)) | |
4433 | return FALSE; | |
4434 | ||
4435 | return TRUE; | |
4436 | } | |
4437 | ||
e717da7e AM |
4438 | /* Satisfy the ELF linker by filling in some fields in our fake bfd. */ |
4439 | ||
bfeb4a28 | 4440 | bfd_boolean |
e7d1c40c AM |
4441 | ppc64_elf_init_stub_bfd (struct bfd_link_info *info, |
4442 | struct ppc64_elf_params *params) | |
e717da7e AM |
4443 | { |
4444 | struct ppc_link_hash_table *htab; | |
4445 | ||
e7d1c40c | 4446 | elf_elfheader (params->stub_bfd)->e_ident[EI_CLASS] = ELFCLASS64; |
e717da7e AM |
4447 | |
4448 | /* Always hook our dynamic sections into the first bfd, which is the | |
4449 | linker created stub bfd. This ensures that the GOT header is at | |
4450 | the start of the output TOC section. */ | |
4451 | htab = ppc_hash_table (info); | |
e7d1c40c AM |
4452 | htab->elf.dynobj = params->stub_bfd; |
4453 | htab->params = params; | |
bfeb4a28 | 4454 | |
bfeb4a28 | 4455 | return create_linkage_sections (htab->elf.dynobj, info); |
e717da7e AM |
4456 | } |
4457 | ||
721956f4 AM |
4458 | /* Build a name for an entry in the stub hash table. */ |
4459 | ||
4460 | static char * | |
4ce794b7 AM |
4461 | ppc_stub_name (const asection *input_section, |
4462 | const asection *sym_sec, | |
4463 | const struct ppc_link_hash_entry *h, | |
4464 | const Elf_Internal_Rela *rel) | |
721956f4 AM |
4465 | { |
4466 | char *stub_name; | |
bcaa2f82 | 4467 | ssize_t len; |
721956f4 AM |
4468 | |
4469 | /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31 | |
4470 | offsets from a sym as a branch target? In fact, we could | |
4471 | probably assume the addend is always zero. */ | |
4472 | BFD_ASSERT (((int) rel->r_addend & 0xffffffff) == rel->r_addend); | |
4473 | ||
4474 | if (h) | |
4475 | { | |
4476 | len = 8 + 1 + strlen (h->elf.root.root.string) + 1 + 8 + 1; | |
4477 | stub_name = bfd_malloc (len); | |
46de2a7c AM |
4478 | if (stub_name == NULL) |
4479 | return stub_name; | |
4480 | ||
bcaa2f82 AM |
4481 | len = sprintf (stub_name, "%08x.%s+%x", |
4482 | input_section->id & 0xffffffff, | |
4483 | h->elf.root.root.string, | |
4484 | (int) rel->r_addend & 0xffffffff); | |
721956f4 AM |
4485 | } |
4486 | else | |
4487 | { | |
ad8e1ba5 | 4488 | len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1; |
721956f4 | 4489 | stub_name = bfd_malloc (len); |
46de2a7c AM |
4490 | if (stub_name == NULL) |
4491 | return stub_name; | |
4492 | ||
bcaa2f82 AM |
4493 | len = sprintf (stub_name, "%08x.%x:%x+%x", |
4494 | input_section->id & 0xffffffff, | |
4495 | sym_sec->id & 0xffffffff, | |
4496 | (int) ELF64_R_SYM (rel->r_info) & 0xffffffff, | |
4497 | (int) rel->r_addend & 0xffffffff); | |
721956f4 | 4498 | } |
bcaa2f82 | 4499 | if (len > 2 && stub_name[len - 2] == '+' && stub_name[len - 1] == '0') |
ee75fd95 | 4500 | stub_name[len - 2] = 0; |
721956f4 AM |
4501 | return stub_name; |
4502 | } | |
4503 | ||
4504 | /* Look up an entry in the stub hash. Stub entries are cached because | |
4505 | creating the stub name takes a bit of time. */ | |
4506 | ||
4507 | static struct ppc_stub_hash_entry * | |
4ce794b7 AM |
4508 | ppc_get_stub_entry (const asection *input_section, |
4509 | const asection *sym_sec, | |
039b3fef | 4510 | struct ppc_link_hash_entry *h, |
4ce794b7 AM |
4511 | const Elf_Internal_Rela *rel, |
4512 | struct ppc_link_hash_table *htab) | |
721956f4 AM |
4513 | { |
4514 | struct ppc_stub_hash_entry *stub_entry; | |
6f20ed8a | 4515 | struct map_stub *group; |
721956f4 AM |
4516 | |
4517 | /* If this input section is part of a group of sections sharing one | |
4518 | stub section, then use the id of the first section in the group. | |
4519 | Stub names need to include a section id, as there may well be | |
4520 | more than one stub used to reach say, printf, and we need to | |
4521 | distinguish between them. */ | |
6f20ed8a | 4522 | group = htab->sec_info[input_section->id].u.group; |
89d77b8a AM |
4523 | if (group == NULL) |
4524 | return NULL; | |
721956f4 | 4525 | |
b3fac117 AM |
4526 | if (h != NULL && h->u.stub_cache != NULL |
4527 | && h->u.stub_cache->h == h | |
6f20ed8a | 4528 | && h->u.stub_cache->group == group) |
721956f4 | 4529 | { |
b3fac117 | 4530 | stub_entry = h->u.stub_cache; |
721956f4 AM |
4531 | } |
4532 | else | |
4533 | { | |
4534 | char *stub_name; | |
4535 | ||
6f20ed8a | 4536 | stub_name = ppc_stub_name (group->link_sec, sym_sec, h, rel); |
721956f4 AM |
4537 | if (stub_name == NULL) |
4538 | return NULL; | |
4539 | ||
4540 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, | |
b34976b6 | 4541 | stub_name, FALSE, FALSE); |
721956f4 | 4542 | if (h != NULL) |
b3fac117 | 4543 | h->u.stub_cache = stub_entry; |
721956f4 AM |
4544 | |
4545 | free (stub_name); | |
4546 | } | |
4547 | ||
4548 | return stub_entry; | |
4549 | } | |
4550 | ||
4551 | /* Add a new stub entry to the stub hash. Not all fields of the new | |
4552 | stub entry are initialised. */ | |
4553 | ||
4554 | static struct ppc_stub_hash_entry * | |
4ce794b7 AM |
4555 | ppc_add_stub (const char *stub_name, |
4556 | asection *section, | |
25f53a85 | 4557 | struct bfd_link_info *info) |
721956f4 | 4558 | { |
25f53a85 | 4559 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
6f20ed8a | 4560 | struct map_stub *group; |
721956f4 AM |
4561 | asection *link_sec; |
4562 | asection *stub_sec; | |
4563 | struct ppc_stub_hash_entry *stub_entry; | |
4564 | ||
6f20ed8a AM |
4565 | group = htab->sec_info[section->id].u.group; |
4566 | link_sec = group->link_sec; | |
4567 | stub_sec = group->stub_sec; | |
721956f4 AM |
4568 | if (stub_sec == NULL) |
4569 | { | |
6f20ed8a AM |
4570 | size_t namelen; |
4571 | bfd_size_type len; | |
4572 | char *s_name; | |
721956f4 | 4573 | |
6f20ed8a AM |
4574 | namelen = strlen (link_sec->name); |
4575 | len = namelen + sizeof (STUB_SUFFIX); | |
4576 | s_name = bfd_alloc (htab->params->stub_bfd, len); | |
4577 | if (s_name == NULL) | |
4578 | return NULL; | |
721956f4 | 4579 | |
6f20ed8a AM |
4580 | memcpy (s_name, link_sec->name, namelen); |
4581 | memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX)); | |
4582 | stub_sec = (*htab->params->add_stub_section) (s_name, link_sec); | |
4583 | if (stub_sec == NULL) | |
4584 | return NULL; | |
4585 | group->stub_sec = stub_sec; | |
721956f4 AM |
4586 | } |
4587 | ||
4588 | /* Enter this entry into the linker stub hash table. */ | |
4589 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, stub_name, | |
b34976b6 | 4590 | TRUE, FALSE); |
721956f4 AM |
4591 | if (stub_entry == NULL) |
4592 | { | |
695344c0 | 4593 | /* xgettext:c-format */ |
8de848d8 | 4594 | info->callbacks->einfo (_("%P: %B: cannot create stub entry %s\n"), |
25f53a85 | 4595 | section->owner, stub_name); |
721956f4 AM |
4596 | return NULL; |
4597 | } | |
4598 | ||
6f20ed8a | 4599 | stub_entry->group = group; |
721956f4 | 4600 | stub_entry->stub_offset = 0; |
721956f4 AM |
4601 | return stub_entry; |
4602 | } | |
4603 | ||
e717da7e AM |
4604 | /* Create .got and .rela.got sections in ABFD, and .got in dynobj if |
4605 | not already done. */ | |
65f38f15 | 4606 | |
b34976b6 | 4607 | static bfd_boolean |
e717da7e | 4608 | create_got_section (bfd *abfd, struct bfd_link_info *info) |
65f38f15 | 4609 | { |
e717da7e AM |
4610 | asection *got, *relgot; |
4611 | flagword flags; | |
4612 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
65f38f15 | 4613 | |
0c8d6e5c | 4614 | if (!is_ppc64_elf (abfd)) |
0ffa91dd | 4615 | return FALSE; |
4dfe6ac6 NC |
4616 | if (htab == NULL) |
4617 | return FALSE; | |
0ffa91dd | 4618 | |
33e44f2e AM |
4619 | if (!htab->elf.sgot |
4620 | && !_bfd_elf_create_got_section (htab->elf.dynobj, info)) | |
4621 | return FALSE; | |
e717da7e AM |
4622 | |
4623 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY | |
4624 | | SEC_LINKER_CREATED); | |
4625 | ||
c456f082 | 4626 | got = bfd_make_section_anyway_with_flags (abfd, ".got", flags); |
e717da7e | 4627 | if (!got |
e717da7e AM |
4628 | || !bfd_set_section_alignment (abfd, got, 3)) |
4629 | return FALSE; | |
65f38f15 | 4630 | |
c456f082 AM |
4631 | relgot = bfd_make_section_anyway_with_flags (abfd, ".rela.got", |
4632 | flags | SEC_READONLY); | |
e717da7e | 4633 | if (!relgot |
e717da7e | 4634 | || ! bfd_set_section_alignment (abfd, relgot, 3)) |
b34976b6 | 4635 | return FALSE; |
e717da7e AM |
4636 | |
4637 | ppc64_elf_tdata (abfd)->got = got; | |
4638 | ppc64_elf_tdata (abfd)->relgot = relgot; | |
b34976b6 | 4639 | return TRUE; |
65f38f15 | 4640 | } |
5bd4f169 | 4641 | |
82bd7b59 | 4642 | /* Create the dynamic sections, and set up shortcuts. */ |
5bd4f169 | 4643 | |
b34976b6 | 4644 | static bfd_boolean |
4ce794b7 | 4645 | ppc64_elf_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info) |
5bd4f169 | 4646 | { |
65f38f15 | 4647 | struct ppc_link_hash_table *htab; |
5bd4f169 | 4648 | |
65f38f15 | 4649 | if (!_bfd_elf_create_dynamic_sections (dynobj, info)) |
b34976b6 | 4650 | return FALSE; |
65f38f15 | 4651 | |
e717da7e | 4652 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
4653 | if (htab == NULL) |
4654 | return FALSE; | |
4655 | ||
3d4d4302 | 4656 | htab->dynbss = bfd_get_linker_section (dynobj, ".dynbss"); |
0e1862bb | 4657 | if (!bfd_link_pic (info)) |
3d4d4302 | 4658 | htab->relbss = bfd_get_linker_section (dynobj, ".rela.bss"); |
65f38f15 | 4659 | |
33e44f2e | 4660 | if (!htab->elf.sgot || !htab->elf.splt || !htab->elf.srelplt || !htab->dynbss |
0e1862bb | 4661 | || (!bfd_link_pic (info) && !htab->relbss)) |
65f38f15 AM |
4662 | abort (); |
4663 | ||
b34976b6 | 4664 | return TRUE; |
5bd4f169 AM |
4665 | } |
4666 | ||
b31867b6 AM |
4667 | /* Follow indirect and warning symbol links. */ |
4668 | ||
4669 | static inline struct bfd_link_hash_entry * | |
4670 | follow_link (struct bfd_link_hash_entry *h) | |
4671 | { | |
4672 | while (h->type == bfd_link_hash_indirect | |
4673 | || h->type == bfd_link_hash_warning) | |
4674 | h = h->u.i.link; | |
4675 | return h; | |
4676 | } | |
4677 | ||
4678 | static inline struct elf_link_hash_entry * | |
4679 | elf_follow_link (struct elf_link_hash_entry *h) | |
4680 | { | |
4681 | return (struct elf_link_hash_entry *) follow_link (&h->root); | |
4682 | } | |
4683 | ||
4684 | static inline struct ppc_link_hash_entry * | |
4685 | ppc_follow_link (struct ppc_link_hash_entry *h) | |
4686 | { | |
4687 | return (struct ppc_link_hash_entry *) follow_link (&h->elf.root); | |
4688 | } | |
4689 | ||
40d16e0b AM |
4690 | /* Merge PLT info on FROM with that on TO. */ |
4691 | ||
4692 | static void | |
4693 | move_plt_plist (struct ppc_link_hash_entry *from, | |
4694 | struct ppc_link_hash_entry *to) | |
4695 | { | |
4696 | if (from->elf.plt.plist != NULL) | |
4697 | { | |
4698 | if (to->elf.plt.plist != NULL) | |
4699 | { | |
4700 | struct plt_entry **entp; | |
4701 | struct plt_entry *ent; | |
4702 | ||
4703 | for (entp = &from->elf.plt.plist; (ent = *entp) != NULL; ) | |
4704 | { | |
4705 | struct plt_entry *dent; | |
4706 | ||
4707 | for (dent = to->elf.plt.plist; dent != NULL; dent = dent->next) | |
4708 | if (dent->addend == ent->addend) | |
4709 | { | |
4710 | dent->plt.refcount += ent->plt.refcount; | |
4711 | *entp = ent->next; | |
4712 | break; | |
4713 | } | |
4714 | if (dent == NULL) | |
4715 | entp = &ent->next; | |
4716 | } | |
4717 | *entp = to->elf.plt.plist; | |
4718 | } | |
4719 | ||
4720 | to->elf.plt.plist = from->elf.plt.plist; | |
4721 | from->elf.plt.plist = NULL; | |
4722 | } | |
4723 | } | |
4724 | ||
65f38f15 AM |
4725 | /* Copy the extra info we tack onto an elf_link_hash_entry. */ |
4726 | ||
4727 | static void | |
fcfa13d2 AM |
4728 | ppc64_elf_copy_indirect_symbol (struct bfd_link_info *info, |
4729 | struct elf_link_hash_entry *dir, | |
4730 | struct elf_link_hash_entry *ind) | |
65f38f15 AM |
4731 | { |
4732 | struct ppc_link_hash_entry *edir, *eind; | |
4733 | ||
4734 | edir = (struct ppc_link_hash_entry *) dir; | |
4735 | eind = (struct ppc_link_hash_entry *) ind; | |
4736 | ||
c79d6685 AM |
4737 | edir->is_func |= eind->is_func; |
4738 | edir->is_func_descriptor |= eind->is_func_descriptor; | |
4739 | edir->tls_mask |= eind->tls_mask; | |
4740 | if (eind->oh != NULL) | |
4741 | edir->oh = ppc_follow_link (eind->oh); | |
4742 | ||
474436e6 AM |
4743 | if (edir->elf.versioned != versioned_hidden) |
4744 | { | |
4745 | /* If called to transfer flags for a weakdef during processing | |
4746 | of elf_adjust_dynamic_symbol, don't copy NON_GOT_REF. | |
4747 | We clear it ourselves for ELIMINATE_COPY_RELOCS. */ | |
4748 | if (!(ELIMINATE_COPY_RELOCS | |
4749 | && eind->elf.root.type != bfd_link_hash_indirect | |
4750 | && edir->elf.dynamic_adjusted)) | |
4751 | edir->elf.non_got_ref |= eind->elf.non_got_ref; | |
4752 | ||
4753 | edir->elf.ref_dynamic |= eind->elf.ref_dynamic; | |
4754 | edir->elf.ref_regular |= eind->elf.ref_regular; | |
4755 | edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak; | |
4756 | edir->elf.needs_plt |= eind->elf.needs_plt; | |
4757 | edir->elf.pointer_equality_needed |= eind->elf.pointer_equality_needed; | |
4758 | } | |
c79d6685 | 4759 | |
d311bc8b AM |
4760 | /* If we were called to copy over info for a weak sym, don't copy |
4761 | dyn_relocs, plt/got info, or dynindx. We used to copy dyn_relocs | |
4762 | in order to simplify readonly_dynrelocs and save a field in the | |
4763 | symbol hash entry, but that means dyn_relocs can't be used in any | |
4764 | tests about a specific symbol, or affect other symbol flags which | |
4765 | are then tested. | |
4766 | Chain weakdefs so we can get from the weakdef back to an alias. | |
4767 | The list is circular so that we don't need to use u.weakdef as | |
4768 | well as this list to look at all aliases. */ | |
4769 | if (eind->elf.root.type != bfd_link_hash_indirect) | |
4770 | { | |
4771 | struct ppc_link_hash_entry *cur, *add, *next; | |
4772 | ||
4773 | add = eind; | |
4774 | do | |
4775 | { | |
4776 | cur = edir->weakref; | |
4777 | if (cur != NULL) | |
4778 | { | |
4779 | do | |
4780 | { | |
4781 | /* We can be called twice for the same symbols. | |
4782 | Don't make multiple loops. */ | |
4783 | if (cur == add) | |
4784 | return; | |
4785 | cur = cur->weakref; | |
4786 | } while (cur != edir); | |
4787 | } | |
4788 | next = add->weakref; | |
4789 | if (cur != add) | |
4790 | { | |
4791 | add->weakref = edir->weakref != NULL ? edir->weakref : edir; | |
4792 | edir->weakref = add; | |
4793 | } | |
4794 | add = next; | |
4795 | } while (add != NULL && add != eind); | |
4796 | return; | |
4797 | } | |
4798 | ||
411e1bfb | 4799 | /* Copy over any dynamic relocs we may have on the indirect sym. */ |
bbd7ec4a | 4800 | if (eind->dyn_relocs != NULL) |
65f38f15 | 4801 | { |
bbd7ec4a AM |
4802 | if (edir->dyn_relocs != NULL) |
4803 | { | |
6061a67d AM |
4804 | struct elf_dyn_relocs **pp; |
4805 | struct elf_dyn_relocs *p; | |
bbd7ec4a | 4806 | |
fcfa13d2 | 4807 | /* Add reloc counts against the indirect sym to the direct sym |
bbd7ec4a AM |
4808 | list. Merge any entries against the same section. */ |
4809 | for (pp = &eind->dyn_relocs; (p = *pp) != NULL; ) | |
4810 | { | |
6061a67d | 4811 | struct elf_dyn_relocs *q; |
bbd7ec4a AM |
4812 | |
4813 | for (q = edir->dyn_relocs; q != NULL; q = q->next) | |
4814 | if (q->sec == p->sec) | |
4815 | { | |
4816 | q->pc_count += p->pc_count; | |
4817 | q->count += p->count; | |
4818 | *pp = p->next; | |
4819 | break; | |
4820 | } | |
4821 | if (q == NULL) | |
4822 | pp = &p->next; | |
4823 | } | |
4824 | *pp = edir->dyn_relocs; | |
4825 | } | |
4826 | ||
65f38f15 AM |
4827 | edir->dyn_relocs = eind->dyn_relocs; |
4828 | eind->dyn_relocs = NULL; | |
4829 | } | |
65f38f15 | 4830 | |
81848ca0 AM |
4831 | /* Copy over got entries that we may have already seen to the |
4832 | symbol which just became indirect. */ | |
411e1bfb AM |
4833 | if (eind->elf.got.glist != NULL) |
4834 | { | |
4835 | if (edir->elf.got.glist != NULL) | |
4836 | { | |
4837 | struct got_entry **entp; | |
4838 | struct got_entry *ent; | |
4839 | ||
4840 | for (entp = &eind->elf.got.glist; (ent = *entp) != NULL; ) | |
4841 | { | |
4842 | struct got_entry *dent; | |
4843 | ||
4844 | for (dent = edir->elf.got.glist; dent != NULL; dent = dent->next) | |
4845 | if (dent->addend == ent->addend | |
e717da7e | 4846 | && dent->owner == ent->owner |
411e1bfb AM |
4847 | && dent->tls_type == ent->tls_type) |
4848 | { | |
4849 | dent->got.refcount += ent->got.refcount; | |
4850 | *entp = ent->next; | |
4851 | break; | |
4852 | } | |
4853 | if (dent == NULL) | |
4854 | entp = &ent->next; | |
4855 | } | |
4856 | *entp = edir->elf.got.glist; | |
4857 | } | |
4858 | ||
4859 | edir->elf.got.glist = eind->elf.got.glist; | |
4860 | eind->elf.got.glist = NULL; | |
4861 | } | |
4862 | ||
4863 | /* And plt entries. */ | |
40d16e0b | 4864 | move_plt_plist (eind, edir); |
411e1bfb | 4865 | |
fcfa13d2 | 4866 | if (eind->elf.dynindx != -1) |
411e1bfb | 4867 | { |
fcfa13d2 AM |
4868 | if (edir->elf.dynindx != -1) |
4869 | _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr, | |
4870 | edir->elf.dynstr_index); | |
411e1bfb AM |
4871 | edir->elf.dynindx = eind->elf.dynindx; |
4872 | edir->elf.dynstr_index = eind->elf.dynstr_index; | |
4873 | eind->elf.dynindx = -1; | |
4874 | eind->elf.dynstr_index = 0; | |
4875 | } | |
411e1bfb AM |
4876 | } |
4877 | ||
8387904d AM |
4878 | /* Find the function descriptor hash entry from the given function code |
4879 | hash entry FH. Link the entries via their OH fields. */ | |
4880 | ||
4881 | static struct ppc_link_hash_entry * | |
b31867b6 | 4882 | lookup_fdh (struct ppc_link_hash_entry *fh, struct ppc_link_hash_table *htab) |
8387904d AM |
4883 | { |
4884 | struct ppc_link_hash_entry *fdh = fh->oh; | |
4885 | ||
4886 | if (fdh == NULL) | |
4887 | { | |
4888 | const char *fd_name = fh->elf.root.root.string + 1; | |
4889 | ||
4890 | fdh = (struct ppc_link_hash_entry *) | |
4891 | elf_link_hash_lookup (&htab->elf, fd_name, FALSE, FALSE, FALSE); | |
b31867b6 AM |
4892 | if (fdh == NULL) |
4893 | return fdh; | |
4894 | ||
4895 | fdh->is_func_descriptor = 1; | |
4896 | fdh->oh = fh; | |
4897 | fh->is_func = 1; | |
4898 | fh->oh = fdh; | |
8387904d AM |
4899 | } |
4900 | ||
b31867b6 | 4901 | return ppc_follow_link (fdh); |
8387904d AM |
4902 | } |
4903 | ||
bb700d78 AM |
4904 | /* Make a fake function descriptor sym for the code sym FH. */ |
4905 | ||
4906 | static struct ppc_link_hash_entry * | |
4907 | make_fdh (struct bfd_link_info *info, | |
908b32fc | 4908 | struct ppc_link_hash_entry *fh) |
bb700d78 AM |
4909 | { |
4910 | bfd *abfd; | |
4911 | asymbol *newsym; | |
4912 | struct bfd_link_hash_entry *bh; | |
4913 | struct ppc_link_hash_entry *fdh; | |
4914 | ||
4915 | abfd = fh->elf.root.u.undef.abfd; | |
4916 | newsym = bfd_make_empty_symbol (abfd); | |
4917 | newsym->name = fh->elf.root.root.string + 1; | |
4918 | newsym->section = bfd_und_section_ptr; | |
4919 | newsym->value = 0; | |
908b32fc | 4920 | newsym->flags = BSF_WEAK; |
bb700d78 AM |
4921 | |
4922 | bh = NULL; | |
4923 | if (!_bfd_generic_link_add_one_symbol (info, abfd, newsym->name, | |
4924 | newsym->flags, newsym->section, | |
4925 | newsym->value, NULL, FALSE, FALSE, | |
4926 | &bh)) | |
4927 | return NULL; | |
4928 | ||
4929 | fdh = (struct ppc_link_hash_entry *) bh; | |
4930 | fdh->elf.non_elf = 0; | |
908b32fc AM |
4931 | fdh->fake = 1; |
4932 | fdh->is_func_descriptor = 1; | |
4933 | fdh->oh = fh; | |
4934 | fh->is_func = 1; | |
4935 | fh->oh = fdh; | |
bb700d78 AM |
4936 | return fdh; |
4937 | } | |
4938 | ||
8387904d AM |
4939 | /* Fix function descriptor symbols defined in .opd sections to be |
4940 | function type. */ | |
555cd476 AM |
4941 | |
4942 | static bfd_boolean | |
c16153ae | 4943 | ppc64_elf_add_symbol_hook (bfd *ibfd, |
e054468f | 4944 | struct bfd_link_info *info, |
555cd476 | 4945 | Elf_Internal_Sym *isym, |
6911b7dc | 4946 | const char **name, |
555cd476 AM |
4947 | flagword *flags ATTRIBUTE_UNUSED, |
4948 | asection **sec, | |
b53dfeb2 | 4949 | bfd_vma *value) |
555cd476 | 4950 | { |
a43942db | 4951 | if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC |
f1885d1e AM |
4952 | && (ibfd->flags & DYNAMIC) == 0 |
4953 | && bfd_get_flavour (info->output_bfd) == bfd_target_elf_flavour) | |
a43942db | 4954 | elf_tdata (info->output_bfd)->has_gnu_symbols |= elf_gnu_symbol_ifunc; |
f64b2e8d | 4955 | |
b53dfeb2 | 4956 | if (*sec != NULL |
f1885d1e | 4957 | && strcmp ((*sec)->name, ".opd") == 0) |
b53dfeb2 AM |
4958 | { |
4959 | asection *code_sec; | |
4960 | ||
4961 | if (!(ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC | |
4962 | || ELF_ST_TYPE (isym->st_info) == STT_FUNC)) | |
4963 | isym->st_info = ELF_ST_INFO (ELF_ST_BIND (isym->st_info), STT_FUNC); | |
4964 | ||
4965 | /* If the symbol is a function defined in .opd, and the function | |
4966 | code is in a discarded group, let it appear to be undefined. */ | |
0e1862bb | 4967 | if (!bfd_link_relocatable (info) |
b53dfeb2 AM |
4968 | && (*sec)->reloc_count != 0 |
4969 | && opd_entry_value (*sec, *value, &code_sec, NULL, | |
4970 | FALSE) != (bfd_vma) -1 | |
4971 | && discarded_section (code_sec)) | |
4972 | { | |
4973 | *sec = bfd_und_section_ptr; | |
4974 | isym->st_shndx = SHN_UNDEF; | |
4975 | } | |
4976 | } | |
dbd1e97e AM |
4977 | else if (*sec != NULL |
4978 | && strcmp ((*sec)->name, ".toc") == 0 | |
4979 | && ELF_ST_TYPE (isym->st_info) == STT_OBJECT) | |
4980 | { | |
4981 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
4982 | if (htab != NULL) | |
4983 | htab->params->object_in_toc = 1; | |
4984 | } | |
433817dd | 4985 | |
6911b7dc AM |
4986 | if ((STO_PPC64_LOCAL_MASK & isym->st_other) != 0) |
4987 | { | |
4988 | if (abiversion (ibfd) == 0) | |
4989 | set_abiversion (ibfd, 2); | |
4990 | else if (abiversion (ibfd) == 1) | |
4991 | { | |
4992 | info->callbacks->einfo (_("%P: symbol '%s' has invalid st_other" | |
4993 | " for ABI version 1\n"), name); | |
4994 | bfd_set_error (bfd_error_bad_value); | |
4995 | return FALSE; | |
4996 | } | |
4997 | } | |
4998 | ||
555cd476 AM |
4999 | return TRUE; |
5000 | } | |
5001 | ||
6911b7dc AM |
5002 | /* Merge non-visibility st_other attributes: local entry point. */ |
5003 | ||
5004 | static void | |
5005 | ppc64_elf_merge_symbol_attribute (struct elf_link_hash_entry *h, | |
5006 | const Elf_Internal_Sym *isym, | |
5007 | bfd_boolean definition, | |
5008 | bfd_boolean dynamic) | |
5009 | { | |
5010 | if (definition && !dynamic) | |
5011 | h->other = ((isym->st_other & ~ELF_ST_VISIBILITY (-1)) | |
5012 | | ELF_ST_VISIBILITY (h->other)); | |
5013 | } | |
5014 | ||
8387904d | 5015 | /* This function makes an old ABI object reference to ".bar" cause the |
908b32fc AM |
5016 | inclusion of a new ABI object archive that defines "bar". |
5017 | NAME is a symbol defined in an archive. Return a symbol in the hash | |
5018 | table that might be satisfied by the archive symbols. */ | |
8387904d AM |
5019 | |
5020 | static struct elf_link_hash_entry * | |
5021 | ppc64_elf_archive_symbol_lookup (bfd *abfd, | |
5022 | struct bfd_link_info *info, | |
5023 | const char *name) | |
5024 | { | |
5025 | struct elf_link_hash_entry *h; | |
5026 | char *dot_name; | |
5027 | size_t len; | |
5028 | ||
5029 | h = _bfd_elf_archive_symbol_lookup (abfd, info, name); | |
908b32fc AM |
5030 | if (h != NULL |
5031 | /* Don't return this sym if it is a fake function descriptor | |
5032 | created by add_symbol_adjust. */ | |
5033 | && !(h->root.type == bfd_link_hash_undefweak | |
5034 | && ((struct ppc_link_hash_entry *) h)->fake)) | |
8387904d AM |
5035 | return h; |
5036 | ||
5037 | if (name[0] == '.') | |
5038 | return h; | |
5039 | ||
5040 | len = strlen (name); | |
5041 | dot_name = bfd_alloc (abfd, len + 2); | |
5042 | if (dot_name == NULL) | |
5043 | return (struct elf_link_hash_entry *) 0 - 1; | |
5044 | dot_name[0] = '.'; | |
5045 | memcpy (dot_name + 1, name, len + 1); | |
5046 | h = _bfd_elf_archive_symbol_lookup (abfd, info, dot_name); | |
5047 | bfd_release (abfd, dot_name); | |
5048 | return h; | |
5049 | } | |
5050 | ||
5051 | /* This function satisfies all old ABI object references to ".bar" if a | |
99877b66 AM |
5052 | new ABI object defines "bar". Well, at least, undefined dot symbols |
5053 | are made weak. This stops later archive searches from including an | |
5054 | object if we already have a function descriptor definition. It also | |
35b0ce59 AM |
5055 | prevents the linker complaining about undefined symbols. |
5056 | We also check and correct mismatched symbol visibility here. The | |
5057 | most restrictive visibility of the function descriptor and the | |
5058 | function entry symbol is used. */ | |
8387904d AM |
5059 | |
5060 | static bfd_boolean | |
b3fac117 | 5061 | add_symbol_adjust (struct ppc_link_hash_entry *eh, struct bfd_link_info *info) |
8387904d | 5062 | { |
8387904d AM |
5063 | struct ppc_link_hash_table *htab; |
5064 | struct ppc_link_hash_entry *fdh; | |
5065 | ||
b3fac117 AM |
5066 | if (eh->elf.root.type == bfd_link_hash_warning) |
5067 | eh = (struct ppc_link_hash_entry *) eh->elf.root.u.i.link; | |
8387904d | 5068 | |
8400d40d AM |
5069 | if (eh->elf.root.type == bfd_link_hash_indirect) |
5070 | return TRUE; | |
5071 | ||
b3fac117 AM |
5072 | if (eh->elf.root.root.string[0] != '.') |
5073 | abort (); | |
8387904d | 5074 | |
b3fac117 | 5075 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
5076 | if (htab == NULL) |
5077 | return FALSE; | |
5078 | ||
b31867b6 AM |
5079 | fdh = lookup_fdh (eh, htab); |
5080 | if (fdh == NULL) | |
5081 | { | |
0e1862bb | 5082 | if (!bfd_link_relocatable (info) |
b31867b6 AM |
5083 | && (eh->elf.root.type == bfd_link_hash_undefined |
5084 | || eh->elf.root.type == bfd_link_hash_undefweak) | |
5085 | && eh->elf.ref_regular) | |
5086 | { | |
5087 | /* Make an undefweak function descriptor sym, which is enough to | |
5088 | pull in an --as-needed shared lib, but won't cause link | |
5089 | errors. Archives are handled elsewhere. */ | |
5090 | fdh = make_fdh (info, eh); | |
5091 | if (fdh == NULL) | |
5092 | return FALSE; | |
5093 | fdh->elf.ref_regular = 1; | |
5094 | } | |
bb700d78 | 5095 | } |
b31867b6 | 5096 | else |
8387904d | 5097 | { |
35b0ce59 AM |
5098 | unsigned entry_vis = ELF_ST_VISIBILITY (eh->elf.other) - 1; |
5099 | unsigned descr_vis = ELF_ST_VISIBILITY (fdh->elf.other) - 1; | |
5100 | if (entry_vis < descr_vis) | |
5101 | fdh->elf.other += entry_vis - descr_vis; | |
5102 | else if (entry_vis > descr_vis) | |
5103 | eh->elf.other += descr_vis - entry_vis; | |
5104 | ||
e87d886e AM |
5105 | if ((fdh->elf.root.type == bfd_link_hash_defined |
5106 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
5107 | && eh->elf.root.type == bfd_link_hash_undefined) | |
35b0ce59 AM |
5108 | { |
5109 | eh->elf.root.type = bfd_link_hash_undefweak; | |
5110 | eh->was_undefined = 1; | |
5111 | htab->twiddled_syms = 1; | |
5112 | } | |
8387904d | 5113 | } |
99877b66 | 5114 | |
8387904d AM |
5115 | return TRUE; |
5116 | } | |
5117 | ||
f6c7c3e8 AM |
5118 | /* Set up opd section info and abiversion for IBFD, and process list |
5119 | of dot-symbols we made in link_hash_newfunc. */ | |
b3fac117 | 5120 | |
8387904d | 5121 | static bfd_boolean |
f6c7c3e8 | 5122 | ppc64_elf_before_check_relocs (bfd *ibfd, struct bfd_link_info *info) |
8387904d | 5123 | { |
99877b66 | 5124 | struct ppc_link_hash_table *htab; |
b3fac117 | 5125 | struct ppc_link_hash_entry **p, *eh; |
459609d6 | 5126 | asection *opd = bfd_get_section_by_name (ibfd, ".opd"); |
433817dd | 5127 | |
459609d6 | 5128 | if (opd != NULL && opd->size != 0) |
b3fac117 | 5129 | { |
459609d6 AM |
5130 | if (abiversion (ibfd) == 0) |
5131 | set_abiversion (ibfd, 1); | |
8a2058b5 | 5132 | else if (abiversion (ibfd) >= 2) |
f6c7c3e8 | 5133 | { |
695344c0 | 5134 | /* xgettext:c-format */ |
459609d6 AM |
5135 | info->callbacks->einfo (_("%P: %B .opd not allowed in ABI" |
5136 | " version %d\n"), | |
5137 | ibfd, abiversion (ibfd)); | |
5138 | bfd_set_error (bfd_error_bad_value); | |
5139 | return FALSE; | |
f6c7c3e8 AM |
5140 | } |
5141 | ||
459609d6 AM |
5142 | if ((ibfd->flags & DYNAMIC) == 0 |
5143 | && (opd->flags & SEC_RELOC) != 0 | |
5144 | && opd->reloc_count != 0 | |
5145 | && !bfd_is_abs_section (opd->output_section)) | |
b3fac117 | 5146 | { |
459609d6 AM |
5147 | /* Garbage collection needs some extra help with .opd sections. |
5148 | We don't want to necessarily keep everything referenced by | |
5149 | relocs in .opd, as that would keep all functions. Instead, | |
5150 | if we reference an .opd symbol (a function descriptor), we | |
5151 | want to keep the function code symbol's section. This is | |
5152 | easy for global symbols, but for local syms we need to keep | |
5153 | information about the associated function section. */ | |
5154 | bfd_size_type amt; | |
5155 | asection **opd_sym_map; | |
5156 | ||
51aecdc5 | 5157 | amt = OPD_NDX (opd->size) * sizeof (*opd_sym_map); |
459609d6 AM |
5158 | opd_sym_map = bfd_zalloc (ibfd, amt); |
5159 | if (opd_sym_map == NULL) | |
b3fac117 | 5160 | return FALSE; |
459609d6 AM |
5161 | ppc64_elf_section_data (opd)->u.opd.func_sec = opd_sym_map; |
5162 | BFD_ASSERT (ppc64_elf_section_data (opd)->sec_type == sec_normal); | |
5163 | ppc64_elf_section_data (opd)->sec_type = sec_opd; | |
b3fac117 AM |
5164 | } |
5165 | } | |
5166 | ||
459609d6 AM |
5167 | if (!is_ppc64_elf (info->output_bfd)) |
5168 | return TRUE; | |
5169 | htab = ppc_hash_table (info); | |
5170 | if (htab == NULL) | |
5171 | return FALSE; | |
5172 | ||
5173 | /* For input files without an explicit abiversion in e_flags | |
5174 | we should have flagged any with symbol st_other bits set | |
5175 | as ELFv1 and above flagged those with .opd as ELFv2. | |
5176 | Set the output abiversion if not yet set, and for any input | |
5177 | still ambiguous, take its abiversion from the output. | |
5178 | Differences in ABI are reported later. */ | |
5179 | if (abiversion (info->output_bfd) == 0) | |
5180 | set_abiversion (info->output_bfd, abiversion (ibfd)); | |
5181 | else if (abiversion (ibfd) == 0) | |
5182 | set_abiversion (ibfd, abiversion (info->output_bfd)); | |
5183 | ||
5184 | p = &htab->dot_syms; | |
5185 | while ((eh = *p) != NULL) | |
5186 | { | |
5187 | *p = NULL; | |
5188 | if (&eh->elf == htab->elf.hgot) | |
5189 | ; | |
5190 | else if (htab->elf.hgot == NULL | |
5191 | && strcmp (eh->elf.root.root.string, ".TOC.") == 0) | |
5192 | htab->elf.hgot = &eh->elf; | |
5193 | else if (!add_symbol_adjust (eh, info)) | |
5194 | return FALSE; | |
5195 | p = &eh->u.next_dot_sym; | |
5196 | } | |
5197 | ||
99877b66 | 5198 | /* We need to fix the undefs list for any syms we have twiddled to |
57e7d118 | 5199 | undefweak. */ |
99877b66 AM |
5200 | if (htab->twiddled_syms) |
5201 | { | |
77cfaee6 | 5202 | bfd_link_repair_undef_list (&htab->elf.root); |
99877b66 AM |
5203 | htab->twiddled_syms = 0; |
5204 | } | |
b3fac117 | 5205 | return TRUE; |
8387904d AM |
5206 | } |
5207 | ||
97fed1c9 JJ |
5208 | /* Undo hash table changes when an --as-needed input file is determined |
5209 | not to be needed. */ | |
5210 | ||
5211 | static bfd_boolean | |
e5034e59 AM |
5212 | ppc64_elf_notice_as_needed (bfd *ibfd, |
5213 | struct bfd_link_info *info, | |
5214 | enum notice_asneeded_action act) | |
97fed1c9 | 5215 | { |
e5034e59 AM |
5216 | if (act == notice_not_needed) |
5217 | { | |
5218 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
4dfe6ac6 | 5219 | |
e5034e59 AM |
5220 | if (htab == NULL) |
5221 | return FALSE; | |
4dfe6ac6 | 5222 | |
e5034e59 AM |
5223 | htab->dot_syms = NULL; |
5224 | } | |
5225 | return _bfd_elf_notice_as_needed (ibfd, info, act); | |
97fed1c9 JJ |
5226 | } |
5227 | ||
aa374f67 AM |
5228 | /* If --just-symbols against a final linked binary, then assume we need |
5229 | toc adjusting stubs when calling functions defined there. */ | |
5230 | ||
5231 | static void | |
5232 | ppc64_elf_link_just_syms (asection *sec, struct bfd_link_info *info) | |
5233 | { | |
5234 | if ((sec->flags & SEC_CODE) != 0 | |
5235 | && (sec->owner->flags & (EXEC_P | DYNAMIC)) != 0 | |
5236 | && is_ppc64_elf (sec->owner)) | |
5237 | { | |
2c3f079f AM |
5238 | if (abiversion (sec->owner) >= 2 |
5239 | || bfd_get_section_by_name (sec->owner, ".opd") != NULL) | |
aa374f67 AM |
5240 | sec->has_toc_reloc = 1; |
5241 | } | |
5242 | _bfd_elf_link_just_syms (sec, info); | |
5243 | } | |
5244 | ||
e054468f | 5245 | static struct plt_entry ** |
4ce794b7 AM |
5246 | update_local_sym_info (bfd *abfd, Elf_Internal_Shdr *symtab_hdr, |
5247 | unsigned long r_symndx, bfd_vma r_addend, int tls_type) | |
411e1bfb AM |
5248 | { |
5249 | struct got_entry **local_got_ents = elf_local_got_ents (abfd); | |
e054468f | 5250 | struct plt_entry **local_plt; |
f961d9dd | 5251 | unsigned char *local_got_tls_masks; |
411e1bfb AM |
5252 | |
5253 | if (local_got_ents == NULL) | |
5254 | { | |
5255 | bfd_size_type size = symtab_hdr->sh_info; | |
5256 | ||
e054468f AM |
5257 | size *= (sizeof (*local_got_ents) |
5258 | + sizeof (*local_plt) | |
5259 | + sizeof (*local_got_tls_masks)); | |
4ce794b7 | 5260 | local_got_ents = bfd_zalloc (abfd, size); |
411e1bfb | 5261 | if (local_got_ents == NULL) |
e054468f | 5262 | return NULL; |
411e1bfb AM |
5263 | elf_local_got_ents (abfd) = local_got_ents; |
5264 | } | |
5265 | ||
e054468f | 5266 | if ((tls_type & (PLT_IFUNC | TLS_EXPLICIT)) == 0) |
411e1bfb AM |
5267 | { |
5268 | struct got_entry *ent; | |
5269 | ||
5270 | for (ent = local_got_ents[r_symndx]; ent != NULL; ent = ent->next) | |
e717da7e AM |
5271 | if (ent->addend == r_addend |
5272 | && ent->owner == abfd | |
5273 | && ent->tls_type == tls_type) | |
411e1bfb AM |
5274 | break; |
5275 | if (ent == NULL) | |
5276 | { | |
5277 | bfd_size_type amt = sizeof (*ent); | |
4ce794b7 | 5278 | ent = bfd_alloc (abfd, amt); |
411e1bfb AM |
5279 | if (ent == NULL) |
5280 | return FALSE; | |
5281 | ent->next = local_got_ents[r_symndx]; | |
5282 | ent->addend = r_addend; | |
e717da7e | 5283 | ent->owner = abfd; |
411e1bfb | 5284 | ent->tls_type = tls_type; |
927be08e | 5285 | ent->is_indirect = FALSE; |
411e1bfb AM |
5286 | ent->got.refcount = 0; |
5287 | local_got_ents[r_symndx] = ent; | |
5288 | } | |
5289 | ent->got.refcount += 1; | |
5290 | } | |
5291 | ||
e054468f | 5292 | local_plt = (struct plt_entry **) (local_got_ents + symtab_hdr->sh_info); |
f961d9dd | 5293 | local_got_tls_masks = (unsigned char *) (local_plt + symtab_hdr->sh_info); |
e7b938ca | 5294 | local_got_tls_masks[r_symndx] |= tls_type; |
e054468f AM |
5295 | |
5296 | return local_plt + r_symndx; | |
65f38f15 AM |
5297 | } |
5298 | ||
411e1bfb | 5299 | static bfd_boolean |
e054468f | 5300 | update_plt_info (bfd *abfd, struct plt_entry **plist, bfd_vma addend) |
1e2f5b6e | 5301 | { |
411e1bfb | 5302 | struct plt_entry *ent; |
1e2f5b6e | 5303 | |
e054468f | 5304 | for (ent = *plist; ent != NULL; ent = ent->next) |
411e1bfb AM |
5305 | if (ent->addend == addend) |
5306 | break; | |
5307 | if (ent == NULL) | |
1e2f5b6e | 5308 | { |
411e1bfb | 5309 | bfd_size_type amt = sizeof (*ent); |
4ce794b7 | 5310 | ent = bfd_alloc (abfd, amt); |
411e1bfb AM |
5311 | if (ent == NULL) |
5312 | return FALSE; | |
e054468f | 5313 | ent->next = *plist; |
411e1bfb AM |
5314 | ent->addend = addend; |
5315 | ent->plt.refcount = 0; | |
e054468f | 5316 | *plist = ent; |
1e2f5b6e | 5317 | } |
411e1bfb | 5318 | ent->plt.refcount += 1; |
b34976b6 | 5319 | return TRUE; |
1e2f5b6e AM |
5320 | } |
5321 | ||
e054468f AM |
5322 | static bfd_boolean |
5323 | is_branch_reloc (enum elf_ppc64_reloc_type r_type) | |
5324 | { | |
5325 | return (r_type == R_PPC64_REL24 | |
5326 | || r_type == R_PPC64_REL14 | |
5327 | || r_type == R_PPC64_REL14_BRTAKEN | |
5328 | || r_type == R_PPC64_REL14_BRNTAKEN | |
5329 | || r_type == R_PPC64_ADDR24 | |
5330 | || r_type == R_PPC64_ADDR14 | |
5331 | || r_type == R_PPC64_ADDR14_BRTAKEN | |
5332 | || r_type == R_PPC64_ADDR14_BRNTAKEN); | |
5333 | } | |
5334 | ||
5bd4f169 | 5335 | /* Look through the relocs for a section during the first phase, and |
65f38f15 | 5336 | calculate needed space in the global offset table, procedure |
5d1634d7 | 5337 | linkage table, and dynamic reloc sections. */ |
5bd4f169 | 5338 | |
b34976b6 | 5339 | static bfd_boolean |
4ce794b7 AM |
5340 | ppc64_elf_check_relocs (bfd *abfd, struct bfd_link_info *info, |
5341 | asection *sec, const Elf_Internal_Rela *relocs) | |
5bd4f169 | 5342 | { |
65f38f15 | 5343 | struct ppc_link_hash_table *htab; |
5bd4f169 | 5344 | Elf_Internal_Shdr *symtab_hdr; |
c7e2358a | 5345 | struct elf_link_hash_entry **sym_hashes; |
5bd4f169 AM |
5346 | const Elf_Internal_Rela *rel; |
5347 | const Elf_Internal_Rela *rel_end; | |
5bd4f169 | 5348 | asection *sreloc; |
1e2f5b6e | 5349 | asection **opd_sym_map; |
3a71aa26 | 5350 | struct elf_link_hash_entry *tga, *dottga; |
5bd4f169 | 5351 | |
0e1862bb | 5352 | if (bfd_link_relocatable (info)) |
b34976b6 | 5353 | return TRUE; |
5bd4f169 | 5354 | |
680a3378 AM |
5355 | /* Don't do anything special with non-loaded, non-alloced sections. |
5356 | In particular, any relocs in such sections should not affect GOT | |
5357 | and PLT reference counting (ie. we don't allow them to create GOT | |
5358 | or PLT entries), there's no possibility or desire to optimize TLS | |
5359 | relocs, and there's not much point in propagating relocs to shared | |
5360 | libs that the dynamic linker won't relocate. */ | |
5361 | if ((sec->flags & SEC_ALLOC) == 0) | |
5362 | return TRUE; | |
5363 | ||
0c8d6e5c | 5364 | BFD_ASSERT (is_ppc64_elf (abfd)); |
0ffa91dd | 5365 | |
65f38f15 | 5366 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
5367 | if (htab == NULL) |
5368 | return FALSE; | |
5369 | ||
3a71aa26 AM |
5370 | tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr", |
5371 | FALSE, FALSE, TRUE); | |
5372 | dottga = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr", | |
5373 | FALSE, FALSE, TRUE); | |
0ffa91dd | 5374 | symtab_hdr = &elf_symtab_hdr (abfd); |
5bd4f169 | 5375 | sym_hashes = elf_sym_hashes (abfd); |
5bd4f169 | 5376 | sreloc = NULL; |
1e2f5b6e | 5377 | opd_sym_map = NULL; |
f6c7c3e8 AM |
5378 | if (ppc64_elf_section_data (sec) != NULL |
5379 | && ppc64_elf_section_data (sec)->sec_type == sec_opd) | |
5380 | opd_sym_map = ppc64_elf_section_data (sec)->u.opd.func_sec; | |
5bd4f169 AM |
5381 | |
5382 | rel_end = relocs + sec->reloc_count; | |
5383 | for (rel = relocs; rel < rel_end; rel++) | |
5384 | { | |
5385 | unsigned long r_symndx; | |
5386 | struct elf_link_hash_entry *h; | |
04c9666a | 5387 | enum elf_ppc64_reloc_type r_type; |
727fc41e | 5388 | int tls_type; |
7c8fe5c4 | 5389 | struct _ppc64_elf_section_data *ppc64_sec; |
cbf95972 | 5390 | struct plt_entry **ifunc, **plt_list; |
5bd4f169 AM |
5391 | |
5392 | r_symndx = ELF64_R_SYM (rel->r_info); | |
5393 | if (r_symndx < symtab_hdr->sh_info) | |
5394 | h = NULL; | |
5395 | else | |
973a3492 L |
5396 | { |
5397 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
b31867b6 | 5398 | h = elf_follow_link (h); |
81fbe831 AM |
5399 | |
5400 | /* PR15323, ref flags aren't set for references in the same | |
5401 | object. */ | |
5402 | h->root.non_ir_ref = 1; | |
1c865ab2 AM |
5403 | |
5404 | if (h == htab->elf.hgot) | |
5405 | sec->has_toc_reloc = 1; | |
973a3492 | 5406 | } |
5bd4f169 | 5407 | |
727fc41e | 5408 | tls_type = 0; |
e054468f | 5409 | ifunc = NULL; |
25f23106 AM |
5410 | if (h != NULL) |
5411 | { | |
5412 | if (h->type == STT_GNU_IFUNC) | |
5413 | { | |
5414 | h->needs_plt = 1; | |
5415 | ifunc = &h->plt.plist; | |
5416 | } | |
5417 | } | |
5418 | else | |
5419 | { | |
5420 | Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache, | |
5421 | abfd, r_symndx); | |
5422 | if (isym == NULL) | |
5423 | return FALSE; | |
5424 | ||
5425 | if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC) | |
5426 | { | |
5427 | ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
5428 | rel->r_addend, PLT_IFUNC); | |
5429 | if (ifunc == NULL) | |
5430 | return FALSE; | |
5431 | } | |
5432 | } | |
727fc41e | 5433 | |
cbf95972 | 5434 | r_type = ELF64_R_TYPE (rel->r_info); |
a33d1f77 | 5435 | switch (r_type) |
5bd4f169 | 5436 | { |
727fc41e AM |
5437 | case R_PPC64_TLSGD: |
5438 | case R_PPC64_TLSLD: | |
5439 | /* These special tls relocs tie a call to __tls_get_addr with | |
5440 | its parameter symbol. */ | |
5441 | break; | |
5442 | ||
411e1bfb AM |
5443 | case R_PPC64_GOT_TLSLD16: |
5444 | case R_PPC64_GOT_TLSLD16_LO: | |
5445 | case R_PPC64_GOT_TLSLD16_HI: | |
5446 | case R_PPC64_GOT_TLSLD16_HA: | |
951fd09b | 5447 | tls_type = TLS_TLS | TLS_LD; |
411e1bfb AM |
5448 | goto dogottls; |
5449 | ||
5450 | case R_PPC64_GOT_TLSGD16: | |
5451 | case R_PPC64_GOT_TLSGD16_LO: | |
5452 | case R_PPC64_GOT_TLSGD16_HI: | |
5453 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b | 5454 | tls_type = TLS_TLS | TLS_GD; |
411e1bfb AM |
5455 | goto dogottls; |
5456 | ||
5457 | case R_PPC64_GOT_TPREL16_DS: | |
5458 | case R_PPC64_GOT_TPREL16_LO_DS: | |
5459 | case R_PPC64_GOT_TPREL16_HI: | |
5460 | case R_PPC64_GOT_TPREL16_HA: | |
0e1862bb | 5461 | if (bfd_link_pic (info)) |
411e1bfb AM |
5462 | info->flags |= DF_STATIC_TLS; |
5463 | tls_type = TLS_TLS | TLS_TPREL; | |
5464 | goto dogottls; | |
5465 | ||
5466 | case R_PPC64_GOT_DTPREL16_DS: | |
5467 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
5468 | case R_PPC64_GOT_DTPREL16_HI: | |
5469 | case R_PPC64_GOT_DTPREL16_HA: | |
5470 | tls_type = TLS_TLS | TLS_DTPREL; | |
5471 | dogottls: | |
5472 | sec->has_tls_reloc = 1; | |
1a0670f3 | 5473 | /* Fall through */ |
411e1bfb | 5474 | |
5bd4f169 | 5475 | case R_PPC64_GOT16: |
5bd4f169 | 5476 | case R_PPC64_GOT16_DS: |
65f38f15 AM |
5477 | case R_PPC64_GOT16_HA: |
5478 | case R_PPC64_GOT16_HI: | |
5479 | case R_PPC64_GOT16_LO: | |
5bd4f169 | 5480 | case R_PPC64_GOT16_LO_DS: |
65f38f15 | 5481 | /* This symbol requires a global offset table entry. */ |
4c52953f | 5482 | sec->has_toc_reloc = 1; |
33c0ec9d AM |
5483 | if (r_type == R_PPC64_GOT_TLSLD16 |
5484 | || r_type == R_PPC64_GOT_TLSGD16 | |
5485 | || r_type == R_PPC64_GOT_TPREL16_DS | |
5486 | || r_type == R_PPC64_GOT_DTPREL16_DS | |
5487 | || r_type == R_PPC64_GOT16 | |
5488 | || r_type == R_PPC64_GOT16_DS) | |
5489 | { | |
5490 | htab->do_multi_toc = 1; | |
d77c8a4b | 5491 | ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1; |
33c0ec9d AM |
5492 | } |
5493 | ||
e717da7e AM |
5494 | if (ppc64_elf_tdata (abfd)->got == NULL |
5495 | && !create_got_section (abfd, info)) | |
b34976b6 | 5496 | return FALSE; |
5bd4f169 AM |
5497 | |
5498 | if (h != NULL) | |
5499 | { | |
411e1bfb AM |
5500 | struct ppc_link_hash_entry *eh; |
5501 | struct got_entry *ent; | |
65f38f15 | 5502 | |
411e1bfb AM |
5503 | eh = (struct ppc_link_hash_entry *) h; |
5504 | for (ent = eh->elf.got.glist; ent != NULL; ent = ent->next) | |
5505 | if (ent->addend == rel->r_addend | |
e717da7e | 5506 | && ent->owner == abfd |
411e1bfb AM |
5507 | && ent->tls_type == tls_type) |
5508 | break; | |
5509 | if (ent == NULL) | |
5bd4f169 | 5510 | { |
411e1bfb | 5511 | bfd_size_type amt = sizeof (*ent); |
4ce794b7 | 5512 | ent = bfd_alloc (abfd, amt); |
411e1bfb | 5513 | if (ent == NULL) |
b34976b6 | 5514 | return FALSE; |
411e1bfb AM |
5515 | ent->next = eh->elf.got.glist; |
5516 | ent->addend = rel->r_addend; | |
e717da7e | 5517 | ent->owner = abfd; |
411e1bfb | 5518 | ent->tls_type = tls_type; |
927be08e | 5519 | ent->is_indirect = FALSE; |
411e1bfb AM |
5520 | ent->got.refcount = 0; |
5521 | eh->elf.got.glist = ent; | |
5bd4f169 | 5522 | } |
411e1bfb | 5523 | ent->got.refcount += 1; |
e7b938ca | 5524 | eh->tls_mask |= tls_type; |
5bd4f169 | 5525 | } |
411e1bfb AM |
5526 | else |
5527 | /* This is a global offset table entry for a local symbol. */ | |
5528 | if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
5529 | rel->r_addend, tls_type)) | |
5530 | return FALSE; | |
a345bc8d AM |
5531 | |
5532 | /* We may also need a plt entry if the symbol turns out to be | |
5533 | an ifunc. */ | |
0e1862bb | 5534 | if (h != NULL && !bfd_link_pic (info) && abiversion (abfd) != 1) |
a345bc8d AM |
5535 | { |
5536 | if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend)) | |
5537 | return FALSE; | |
5538 | } | |
5bd4f169 AM |
5539 | break; |
5540 | ||
5bd4f169 | 5541 | case R_PPC64_PLT16_HA: |
65f38f15 AM |
5542 | case R_PPC64_PLT16_HI: |
5543 | case R_PPC64_PLT16_LO: | |
5544 | case R_PPC64_PLT32: | |
5545 | case R_PPC64_PLT64: | |
cbf95972 AM |
5546 | /* This symbol requires a procedure linkage table entry. */ |
5547 | plt_list = ifunc; | |
5548 | if (h != NULL) | |
e054468f | 5549 | { |
e054468f AM |
5550 | h->needs_plt = 1; |
5551 | if (h->root.root.string[0] == '.' | |
5552 | && h->root.root.string[1] != '\0') | |
5553 | ((struct ppc_link_hash_entry *) h)->is_func = 1; | |
cbf95972 AM |
5554 | plt_list = &h->plt.plist; |
5555 | } | |
5556 | if (plt_list == NULL) | |
5557 | { | |
5558 | /* It does not make sense to have a procedure linkage | |
5559 | table entry for a non-ifunc local symbol. */ | |
5560 | info->callbacks->einfo | |
695344c0 | 5561 | /* xgettext:c-format */ |
cbf95972 AM |
5562 | (_("%P: %H: %s reloc against local symbol\n"), |
5563 | abfd, sec, rel->r_offset, | |
5564 | ppc64_elf_howto_table[r_type]->name); | |
5565 | bfd_set_error (bfd_error_bad_value); | |
5566 | return FALSE; | |
e054468f | 5567 | } |
cbf95972 AM |
5568 | if (!update_plt_info (abfd, plt_list, rel->r_addend)) |
5569 | return FALSE; | |
5bd4f169 AM |
5570 | break; |
5571 | ||
5572 | /* The following relocations don't need to propagate the | |
5573 | relocation if linking a shared object since they are | |
5574 | section relative. */ | |
5575 | case R_PPC64_SECTOFF: | |
5576 | case R_PPC64_SECTOFF_LO: | |
5577 | case R_PPC64_SECTOFF_HI: | |
5578 | case R_PPC64_SECTOFF_HA: | |
5579 | case R_PPC64_SECTOFF_DS: | |
5580 | case R_PPC64_SECTOFF_LO_DS: | |
411e1bfb AM |
5581 | case R_PPC64_DTPREL16: |
5582 | case R_PPC64_DTPREL16_LO: | |
5583 | case R_PPC64_DTPREL16_HI: | |
5584 | case R_PPC64_DTPREL16_HA: | |
5585 | case R_PPC64_DTPREL16_DS: | |
5586 | case R_PPC64_DTPREL16_LO_DS: | |
f9c6b907 AM |
5587 | case R_PPC64_DTPREL16_HIGH: |
5588 | case R_PPC64_DTPREL16_HIGHA: | |
411e1bfb AM |
5589 | case R_PPC64_DTPREL16_HIGHER: |
5590 | case R_PPC64_DTPREL16_HIGHERA: | |
5591 | case R_PPC64_DTPREL16_HIGHEST: | |
5592 | case R_PPC64_DTPREL16_HIGHESTA: | |
5bd4f169 AM |
5593 | break; |
5594 | ||
ad8e1ba5 | 5595 | /* Nor do these. */ |
25f23106 AM |
5596 | case R_PPC64_REL16: |
5597 | case R_PPC64_REL16_LO: | |
5598 | case R_PPC64_REL16_HI: | |
5599 | case R_PPC64_REL16_HA: | |
a680de9a | 5600 | case R_PPC64_REL16DX_HA: |
25f23106 AM |
5601 | break; |
5602 | ||
45965137 AM |
5603 | /* Not supported as a dynamic relocation. */ |
5604 | case R_PPC64_ADDR64_LOCAL: | |
0e1862bb | 5605 | if (bfd_link_pic (info)) |
45965137 AM |
5606 | { |
5607 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) | |
5608 | ppc_howto_init (); | |
695344c0 | 5609 | /* xgettext:c-format */ |
45965137 AM |
5610 | info->callbacks->einfo (_("%P: %H: %s reloc unsupported " |
5611 | "in shared libraries and PIEs.\n"), | |
5612 | abfd, sec, rel->r_offset, | |
5613 | ppc64_elf_howto_table[r_type]->name); | |
5614 | bfd_set_error (bfd_error_bad_value); | |
5615 | return FALSE; | |
5616 | } | |
5617 | break; | |
5618 | ||
ad8e1ba5 | 5619 | case R_PPC64_TOC16: |
33c0ec9d AM |
5620 | case R_PPC64_TOC16_DS: |
5621 | htab->do_multi_toc = 1; | |
d77c8a4b | 5622 | ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1; |
1a0670f3 | 5623 | /* Fall through. */ |
ad8e1ba5 AM |
5624 | case R_PPC64_TOC16_LO: |
5625 | case R_PPC64_TOC16_HI: | |
5626 | case R_PPC64_TOC16_HA: | |
ad8e1ba5 | 5627 | case R_PPC64_TOC16_LO_DS: |
4c52953f | 5628 | sec->has_toc_reloc = 1; |
ad8e1ba5 AM |
5629 | break; |
5630 | ||
006589cf AM |
5631 | /* Marker reloc. */ |
5632 | case R_PPC64_ENTRY: | |
5633 | break; | |
5634 | ||
5bd4f169 AM |
5635 | /* This relocation describes the C++ object vtable hierarchy. |
5636 | Reconstruct it for later use during GC. */ | |
5637 | case R_PPC64_GNU_VTINHERIT: | |
c152c796 | 5638 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
b34976b6 | 5639 | return FALSE; |
5bd4f169 AM |
5640 | break; |
5641 | ||
5642 | /* This relocation describes which C++ vtable entries are actually | |
5643 | used. Record for later use during GC. */ | |
5644 | case R_PPC64_GNU_VTENTRY: | |
d17e0c6e JB |
5645 | BFD_ASSERT (h != NULL); |
5646 | if (h != NULL | |
5647 | && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) | |
b34976b6 | 5648 | return FALSE; |
5bd4f169 AM |
5649 | break; |
5650 | ||
721956f4 AM |
5651 | case R_PPC64_REL14: |
5652 | case R_PPC64_REL14_BRTAKEN: | |
5653 | case R_PPC64_REL14_BRNTAKEN: | |
220c76dd AM |
5654 | { |
5655 | asection *dest = NULL; | |
5656 | ||
5657 | /* Heuristic: If jumping outside our section, chances are | |
5658 | we are going to need a stub. */ | |
5659 | if (h != NULL) | |
5660 | { | |
5661 | /* If the sym is weak it may be overridden later, so | |
5662 | don't assume we know where a weak sym lives. */ | |
5663 | if (h->root.type == bfd_link_hash_defined) | |
5664 | dest = h->root.u.def.section; | |
5665 | } | |
5666 | else | |
87d72d41 AM |
5667 | { |
5668 | Elf_Internal_Sym *isym; | |
5669 | ||
5670 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, | |
5671 | abfd, r_symndx); | |
5672 | if (isym == NULL) | |
5673 | return FALSE; | |
5674 | ||
5675 | dest = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
5676 | } | |
5677 | ||
220c76dd | 5678 | if (dest != sec) |
7c8fe5c4 | 5679 | ppc64_elf_section_data (sec)->has_14bit_branch = 1; |
220c76dd | 5680 | } |
721956f4 AM |
5681 | /* Fall through. */ |
5682 | ||
5d1634d7 | 5683 | case R_PPC64_REL24: |
cbf95972 AM |
5684 | plt_list = ifunc; |
5685 | if (h != NULL) | |
5d1634d7 | 5686 | { |
e054468f AM |
5687 | h->needs_plt = 1; |
5688 | if (h->root.root.string[0] == '.' | |
5689 | && h->root.root.string[1] != '\0') | |
5690 | ((struct ppc_link_hash_entry *) h)->is_func = 1; | |
cbf95972 | 5691 | |
3a71aa26 | 5692 | if (h == tga || h == dottga) |
cbf95972 AM |
5693 | { |
5694 | sec->has_tls_reloc = 1; | |
5695 | if (rel != relocs | |
5696 | && (ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSGD | |
5697 | || ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSLD)) | |
5698 | /* We have a new-style __tls_get_addr call with | |
5699 | a marker reloc. */ | |
5700 | ; | |
5701 | else | |
5702 | /* Mark this section as having an old-style call. */ | |
5703 | sec->has_tls_get_addr_call = 1; | |
5704 | } | |
5705 | plt_list = &h->plt.plist; | |
411e1bfb | 5706 | } |
cbf95972 AM |
5707 | |
5708 | /* We may need a .plt entry if the function this reloc | |
5709 | refers to is in a shared lib. */ | |
5710 | if (plt_list | |
5711 | && !update_plt_info (abfd, plt_list, rel->r_addend)) | |
5712 | return FALSE; | |
411e1bfb AM |
5713 | break; |
5714 | ||
cbf95972 AM |
5715 | case R_PPC64_ADDR14: |
5716 | case R_PPC64_ADDR14_BRNTAKEN: | |
5717 | case R_PPC64_ADDR14_BRTAKEN: | |
5718 | case R_PPC64_ADDR24: | |
5719 | goto dodyn; | |
5720 | ||
411e1bfb AM |
5721 | case R_PPC64_TPREL64: |
5722 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_TPREL; | |
0e1862bb | 5723 | if (bfd_link_pic (info)) |
411e1bfb AM |
5724 | info->flags |= DF_STATIC_TLS; |
5725 | goto dotlstoc; | |
5726 | ||
5727 | case R_PPC64_DTPMOD64: | |
5728 | if (rel + 1 < rel_end | |
5729 | && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64) | |
5730 | && rel[1].r_offset == rel->r_offset + 8) | |
951fd09b | 5731 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_GD; |
411e1bfb | 5732 | else |
951fd09b | 5733 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_LD; |
411e1bfb AM |
5734 | goto dotlstoc; |
5735 | ||
5736 | case R_PPC64_DTPREL64: | |
5737 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_DTPREL; | |
5738 | if (rel != relocs | |
5739 | && rel[-1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPMOD64) | |
5740 | && rel[-1].r_offset == rel->r_offset - 8) | |
5741 | /* This is the second reloc of a dtpmod, dtprel pair. | |
5742 | Don't mark with TLS_DTPREL. */ | |
5743 | goto dodyn; | |
5744 | ||
5745 | dotlstoc: | |
5746 | sec->has_tls_reloc = 1; | |
5747 | if (h != NULL) | |
5748 | { | |
5749 | struct ppc_link_hash_entry *eh; | |
5750 | eh = (struct ppc_link_hash_entry *) h; | |
e7b938ca | 5751 | eh->tls_mask |= tls_type; |
411e1bfb AM |
5752 | } |
5753 | else | |
5754 | if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
5755 | rel->r_addend, tls_type)) | |
5756 | return FALSE; | |
5757 | ||
7c8fe5c4 AM |
5758 | ppc64_sec = ppc64_elf_section_data (sec); |
5759 | if (ppc64_sec->sec_type != sec_toc) | |
411e1bfb | 5760 | { |
3a71aa26 AM |
5761 | bfd_size_type amt; |
5762 | ||
e7b938ca | 5763 | /* One extra to simplify get_tls_mask. */ |
3a71aa26 AM |
5764 | amt = sec->size * sizeof (unsigned) / 8 + sizeof (unsigned); |
5765 | ppc64_sec->u.toc.symndx = bfd_zalloc (abfd, amt); | |
5766 | if (ppc64_sec->u.toc.symndx == NULL) | |
5767 | return FALSE; | |
5768 | amt = sec->size * sizeof (bfd_vma) / 8; | |
5769 | ppc64_sec->u.toc.add = bfd_zalloc (abfd, amt); | |
5770 | if (ppc64_sec->u.toc.add == NULL) | |
411e1bfb | 5771 | return FALSE; |
7c8fe5c4 AM |
5772 | BFD_ASSERT (ppc64_sec->sec_type == sec_normal); |
5773 | ppc64_sec->sec_type = sec_toc; | |
411e1bfb AM |
5774 | } |
5775 | BFD_ASSERT (rel->r_offset % 8 == 0); | |
3a71aa26 AM |
5776 | ppc64_sec->u.toc.symndx[rel->r_offset / 8] = r_symndx; |
5777 | ppc64_sec->u.toc.add[rel->r_offset / 8] = rel->r_addend; | |
951fd09b AM |
5778 | |
5779 | /* Mark the second slot of a GD or LD entry. | |
5780 | -1 to indicate GD and -2 to indicate LD. */ | |
5781 | if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_GD)) | |
3a71aa26 | 5782 | ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -1; |
951fd09b | 5783 | else if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_LD)) |
3a71aa26 | 5784 | ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -2; |
411e1bfb AM |
5785 | goto dodyn; |
5786 | ||
5787 | case R_PPC64_TPREL16: | |
5788 | case R_PPC64_TPREL16_LO: | |
5789 | case R_PPC64_TPREL16_HI: | |
5790 | case R_PPC64_TPREL16_HA: | |
5791 | case R_PPC64_TPREL16_DS: | |
5792 | case R_PPC64_TPREL16_LO_DS: | |
f9c6b907 AM |
5793 | case R_PPC64_TPREL16_HIGH: |
5794 | case R_PPC64_TPREL16_HIGHA: | |
411e1bfb AM |
5795 | case R_PPC64_TPREL16_HIGHER: |
5796 | case R_PPC64_TPREL16_HIGHERA: | |
5797 | case R_PPC64_TPREL16_HIGHEST: | |
5798 | case R_PPC64_TPREL16_HIGHESTA: | |
0e1862bb | 5799 | if (bfd_link_pic (info)) |
411e1bfb | 5800 | { |
afb93314 | 5801 | info->flags |= DF_STATIC_TLS; |
411e1bfb | 5802 | goto dodyn; |
5d1634d7 AM |
5803 | } |
5804 | break; | |
5805 | ||
e86ce104 | 5806 | case R_PPC64_ADDR64: |
1e2f5b6e | 5807 | if (opd_sym_map != NULL |
1e2f5b6e | 5808 | && rel + 1 < rel_end |
4ce794b7 | 5809 | && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC) |
1e2f5b6e | 5810 | { |
8387904d AM |
5811 | if (h != NULL) |
5812 | { | |
5813 | if (h->root.root.string[0] == '.' | |
5814 | && h->root.root.string[1] != 0 | |
b31867b6 | 5815 | && lookup_fdh ((struct ppc_link_hash_entry *) h, htab)) |
8387904d AM |
5816 | ; |
5817 | else | |
5818 | ((struct ppc_link_hash_entry *) h)->is_func = 1; | |
5819 | } | |
5820 | else | |
5821 | { | |
5822 | asection *s; | |
87d72d41 | 5823 | Elf_Internal_Sym *isym; |
1e2f5b6e | 5824 | |
87d72d41 AM |
5825 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, |
5826 | abfd, r_symndx); | |
5827 | if (isym == NULL) | |
8387904d | 5828 | return FALSE; |
87d72d41 AM |
5829 | |
5830 | s = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
5831 | if (s != NULL && s != sec) | |
51aecdc5 | 5832 | opd_sym_map[OPD_NDX (rel->r_offset)] = s; |
8387904d | 5833 | } |
1e2f5b6e | 5834 | } |
e86ce104 AM |
5835 | /* Fall through. */ |
5836 | ||
65f38f15 AM |
5837 | case R_PPC64_ADDR16: |
5838 | case R_PPC64_ADDR16_DS: | |
5839 | case R_PPC64_ADDR16_HA: | |
5840 | case R_PPC64_ADDR16_HI: | |
f9c6b907 AM |
5841 | case R_PPC64_ADDR16_HIGH: |
5842 | case R_PPC64_ADDR16_HIGHA: | |
65f38f15 AM |
5843 | case R_PPC64_ADDR16_HIGHER: |
5844 | case R_PPC64_ADDR16_HIGHERA: | |
5845 | case R_PPC64_ADDR16_HIGHEST: | |
5846 | case R_PPC64_ADDR16_HIGHESTA: | |
5847 | case R_PPC64_ADDR16_LO: | |
5848 | case R_PPC64_ADDR16_LO_DS: | |
0e1862bb | 5849 | if (h != NULL && !bfd_link_pic (info) && abiversion (abfd) != 1 |
a345bc8d AM |
5850 | && rel->r_addend == 0) |
5851 | { | |
5852 | /* We may need a .plt entry if this reloc refers to a | |
5853 | function in a shared lib. */ | |
5854 | if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend)) | |
5855 | return FALSE; | |
5856 | h->pointer_equality_needed = 1; | |
5857 | } | |
5858 | /* Fall through. */ | |
5859 | ||
5860 | case R_PPC64_REL30: | |
5861 | case R_PPC64_REL32: | |
5862 | case R_PPC64_REL64: | |
65f38f15 | 5863 | case R_PPC64_ADDR32: |
65f38f15 AM |
5864 | case R_PPC64_UADDR16: |
5865 | case R_PPC64_UADDR32: | |
5866 | case R_PPC64_UADDR64: | |
5bd4f169 | 5867 | case R_PPC64_TOC: |
0e1862bb | 5868 | if (h != NULL && !bfd_link_pic (info)) |
81848ca0 | 5869 | /* We may need a copy reloc. */ |
f5385ebf | 5870 | h->non_got_ref = 1; |
81848ca0 | 5871 | |
41bd81ab | 5872 | /* Don't propagate .opd relocs. */ |
1e2f5b6e | 5873 | if (NO_OPD_RELOCS && opd_sym_map != NULL) |
e86ce104 | 5874 | break; |
e86ce104 | 5875 | |
65f38f15 AM |
5876 | /* If we are creating a shared library, and this is a reloc |
5877 | against a global symbol, or a non PC relative reloc | |
5878 | against a local symbol, then we need to copy the reloc | |
5879 | into the shared library. However, if we are linking with | |
5880 | -Bsymbolic, we do not need to copy a reloc against a | |
5881 | global symbol which is defined in an object we are | |
5882 | including in the link (i.e., DEF_REGULAR is set). At | |
5883 | this point we have not seen all the input files, so it is | |
5884 | possible that DEF_REGULAR is not set now but will be set | |
5885 | later (it is never cleared). In case of a weak definition, | |
5886 | DEF_REGULAR may be cleared later by a strong definition in | |
5887 | a shared library. We account for that possibility below by | |
f4656909 | 5888 | storing information in the dyn_relocs field of the hash |
65f38f15 AM |
5889 | table entry. A similar situation occurs when creating |
5890 | shared libraries and symbol visibility changes render the | |
5891 | symbol local. | |
5892 | ||
5893 | If on the other hand, we are creating an executable, we | |
5894 | may need to keep relocations for symbols satisfied by a | |
5895 | dynamic library if we manage to avoid copy relocs for the | |
5896 | symbol. */ | |
411e1bfb | 5897 | dodyn: |
0e1862bb | 5898 | if ((bfd_link_pic (info) |
1d483afe | 5899 | && (must_be_dyn_reloc (info, r_type) |
65f38f15 | 5900 | || (h != NULL |
198f1157 | 5901 | && (!SYMBOLIC_BIND (info, h) |
65f38f15 | 5902 | || h->root.type == bfd_link_hash_defweak |
f5385ebf | 5903 | || !h->def_regular)))) |
f4656909 | 5904 | || (ELIMINATE_COPY_RELOCS |
0e1862bb | 5905 | && !bfd_link_pic (info) |
65f38f15 AM |
5906 | && h != NULL |
5907 | && (h->root.type == bfd_link_hash_defweak | |
25f23106 | 5908 | || !h->def_regular)) |
0e1862bb | 5909 | || (!bfd_link_pic (info) |
25f23106 | 5910 | && ifunc != NULL)) |
5bd4f169 | 5911 | { |
65f38f15 AM |
5912 | /* We must copy these reloc types into the output file. |
5913 | Create a reloc section in dynobj and make room for | |
5914 | this reloc. */ | |
5bd4f169 AM |
5915 | if (sreloc == NULL) |
5916 | { | |
83bac4b0 NC |
5917 | sreloc = _bfd_elf_make_dynamic_reloc_section |
5918 | (sec, htab->elf.dynobj, 3, abfd, /*rela?*/ TRUE); | |
65f38f15 | 5919 | |
5bd4f169 | 5920 | if (sreloc == NULL) |
83bac4b0 | 5921 | return FALSE; |
5bd4f169 AM |
5922 | } |
5923 | ||
65f38f15 AM |
5924 | /* If this is a global symbol, we count the number of |
5925 | relocations we need for this symbol. */ | |
5926 | if (h != NULL) | |
5927 | { | |
19e08130 AM |
5928 | struct elf_dyn_relocs *p; |
5929 | struct elf_dyn_relocs **head; | |
5930 | ||
ec338859 | 5931 | head = &((struct ppc_link_hash_entry *) h)->dyn_relocs; |
19e08130 AM |
5932 | p = *head; |
5933 | if (p == NULL || p->sec != sec) | |
5934 | { | |
5935 | p = bfd_alloc (htab->elf.dynobj, sizeof *p); | |
5936 | if (p == NULL) | |
5937 | return FALSE; | |
5938 | p->next = *head; | |
5939 | *head = p; | |
5940 | p->sec = sec; | |
5941 | p->count = 0; | |
5942 | p->pc_count = 0; | |
5943 | } | |
5944 | p->count += 1; | |
5945 | if (!must_be_dyn_reloc (info, r_type)) | |
5946 | p->pc_count += 1; | |
65f38f15 AM |
5947 | } |
5948 | else | |
5949 | { | |
ec338859 AM |
5950 | /* Track dynamic relocs needed for local syms too. |
5951 | We really need local syms available to do this | |
5952 | easily. Oh well. */ | |
19e08130 AM |
5953 | struct ppc_dyn_relocs *p; |
5954 | struct ppc_dyn_relocs **head; | |
5955 | bfd_boolean is_ifunc; | |
ec338859 | 5956 | asection *s; |
6edfbbad | 5957 | void *vpp; |
87d72d41 | 5958 | Elf_Internal_Sym *isym; |
6edfbbad | 5959 | |
87d72d41 AM |
5960 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, |
5961 | abfd, r_symndx); | |
5962 | if (isym == NULL) | |
b34976b6 | 5963 | return FALSE; |
ec338859 | 5964 | |
87d72d41 AM |
5965 | s = bfd_section_from_elf_index (abfd, isym->st_shndx); |
5966 | if (s == NULL) | |
5967 | s = sec; | |
5968 | ||
6edfbbad | 5969 | vpp = &elf_section_data (s)->local_dynrel; |
19e08130 AM |
5970 | head = (struct ppc_dyn_relocs **) vpp; |
5971 | is_ifunc = ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC; | |
5972 | p = *head; | |
5973 | if (p != NULL && p->sec == sec && p->ifunc != is_ifunc) | |
5974 | p = p->next; | |
5975 | if (p == NULL || p->sec != sec || p->ifunc != is_ifunc) | |
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->ifunc = is_ifunc; | |
5984 | p->count = 0; | |
5985 | } | |
5986 | p->count += 1; | |
ec338859 | 5987 | } |
65f38f15 | 5988 | } |
5bd4f169 | 5989 | break; |
65f38f15 AM |
5990 | |
5991 | default: | |
96e0dda4 | 5992 | break; |
5bd4f169 AM |
5993 | } |
5994 | } | |
5995 | ||
b34976b6 | 5996 | return TRUE; |
5bd4f169 AM |
5997 | } |
5998 | ||
ee67d69a AM |
5999 | /* Merge backend specific data from an object file to the output |
6000 | object file when linking. */ | |
6001 | ||
6002 | static bfd_boolean | |
50e03d47 | 6003 | ppc64_elf_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info) |
ee67d69a | 6004 | { |
50e03d47 | 6005 | bfd *obfd = info->output_bfd; |
ee67d69a AM |
6006 | unsigned long iflags, oflags; |
6007 | ||
6008 | if ((ibfd->flags & BFD_LINKER_CREATED) != 0) | |
6009 | return TRUE; | |
6010 | ||
6011 | if (!is_ppc64_elf (ibfd) || !is_ppc64_elf (obfd)) | |
6012 | return TRUE; | |
6013 | ||
50e03d47 | 6014 | if (!_bfd_generic_verify_endian_match (ibfd, info)) |
ee67d69a AM |
6015 | return FALSE; |
6016 | ||
6017 | iflags = elf_elfheader (ibfd)->e_flags; | |
6018 | oflags = elf_elfheader (obfd)->e_flags; | |
6019 | ||
f6c7c3e8 | 6020 | if (iflags & ~EF_PPC64_ABI) |
ee67d69a | 6021 | { |
4eca0228 | 6022 | _bfd_error_handler |
695344c0 | 6023 | /* xgettext:c-format */ |
ee67d69a AM |
6024 | (_("%B uses unknown e_flags 0x%lx"), ibfd, iflags); |
6025 | bfd_set_error (bfd_error_bad_value); | |
6026 | return FALSE; | |
6027 | } | |
f6c7c3e8 | 6028 | else if (iflags != oflags && iflags != 0) |
ee67d69a | 6029 | { |
4eca0228 | 6030 | _bfd_error_handler |
695344c0 | 6031 | /* xgettext:c-format */ |
ee67d69a AM |
6032 | (_("%B: ABI version %ld is not compatible with ABI version %ld output"), |
6033 | ibfd, iflags, oflags); | |
6034 | bfd_set_error (bfd_error_bad_value); | |
6035 | return FALSE; | |
6036 | } | |
6037 | ||
50e03d47 | 6038 | _bfd_elf_ppc_merge_fp_attributes (ibfd, info); |
005d79fd | 6039 | |
ee67d69a | 6040 | /* Merge Tag_compatibility attributes and any common GNU ones. */ |
50e03d47 | 6041 | _bfd_elf_merge_object_attributes (ibfd, info); |
ee67d69a AM |
6042 | |
6043 | return TRUE; | |
6044 | } | |
6045 | ||
6046 | static bfd_boolean | |
6047 | ppc64_elf_print_private_bfd_data (bfd *abfd, void *ptr) | |
6048 | { | |
6049 | /* Print normal ELF private data. */ | |
6050 | _bfd_elf_print_private_bfd_data (abfd, ptr); | |
6051 | ||
6052 | if (elf_elfheader (abfd)->e_flags != 0) | |
6053 | { | |
6054 | FILE *file = ptr; | |
6055 | ||
ee67d69a AM |
6056 | fprintf (file, _("private flags = 0x%lx:"), |
6057 | elf_elfheader (abfd)->e_flags); | |
6058 | ||
6059 | if ((elf_elfheader (abfd)->e_flags & EF_PPC64_ABI) != 0) | |
6060 | fprintf (file, _(" [abiv%ld]"), | |
6061 | elf_elfheader (abfd)->e_flags & EF_PPC64_ABI); | |
6062 | fputc ('\n', file); | |
6063 | } | |
6064 | ||
6065 | return TRUE; | |
6066 | } | |
6067 | ||
8387904d | 6068 | /* OFFSET in OPD_SEC specifies a function descriptor. Return the address |
b53dfeb2 AM |
6069 | of the code entry point, and its section, which must be in the same |
6070 | object as OPD_SEC. Returns (bfd_vma) -1 on error. */ | |
8387904d AM |
6071 | |
6072 | static bfd_vma | |
6073 | opd_entry_value (asection *opd_sec, | |
6074 | bfd_vma offset, | |
6075 | asection **code_sec, | |
aef36ac1 AM |
6076 | bfd_vma *code_off, |
6077 | bfd_boolean in_code_sec) | |
8387904d AM |
6078 | { |
6079 | bfd *opd_bfd = opd_sec->owner; | |
8860955f | 6080 | Elf_Internal_Rela *relocs; |
8387904d | 6081 | Elf_Internal_Rela *lo, *hi, *look; |
645ea6a9 | 6082 | bfd_vma val; |
8387904d | 6083 | |
9f296da3 AM |
6084 | /* No relocs implies we are linking a --just-symbols object, or looking |
6085 | at a final linked executable with addr2line or somesuch. */ | |
4b85d634 AM |
6086 | if (opd_sec->reloc_count == 0) |
6087 | { | |
729eabd5 | 6088 | bfd_byte *contents = ppc64_elf_tdata (opd_bfd)->opd.contents; |
3b36f7e6 | 6089 | |
729eabd5 AM |
6090 | if (contents == NULL) |
6091 | { | |
6092 | if (!bfd_malloc_and_get_section (opd_bfd, opd_sec, &contents)) | |
6093 | return (bfd_vma) -1; | |
6094 | ppc64_elf_tdata (opd_bfd)->opd.contents = contents; | |
6095 | } | |
ee1e4ede | 6096 | |
dbb3fbbb | 6097 | /* PR 17512: file: 64b9dfbb. */ |
451dfd38 | 6098 | if (offset + 7 >= opd_sec->size || offset + 7 < offset) |
dbb3fbbb NC |
6099 | return (bfd_vma) -1; |
6100 | ||
729eabd5 | 6101 | val = bfd_get_64 (opd_bfd, contents + offset); |
aef36ac1 AM |
6102 | if (code_sec != NULL) |
6103 | { | |
6104 | asection *sec, *likely = NULL; | |
ee1e4ede | 6105 | |
aef36ac1 | 6106 | if (in_code_sec) |
4b85d634 | 6107 | { |
aef36ac1 AM |
6108 | sec = *code_sec; |
6109 | if (sec->vma <= val | |
6110 | && val < sec->vma + sec->size) | |
6111 | likely = sec; | |
6112 | else | |
6113 | val = -1; | |
6114 | } | |
6115 | else | |
6116 | for (sec = opd_bfd->sections; sec != NULL; sec = sec->next) | |
6117 | if (sec->vma <= val | |
6118 | && (sec->flags & SEC_LOAD) != 0 | |
6119 | && (sec->flags & SEC_ALLOC) != 0) | |
6120 | likely = sec; | |
6121 | if (likely != NULL) | |
6122 | { | |
6123 | *code_sec = likely; | |
6124 | if (code_off != NULL) | |
6125 | *code_off = val - likely->vma; | |
4b85d634 AM |
6126 | } |
6127 | } | |
aef36ac1 | 6128 | return val; |
4b85d634 AM |
6129 | } |
6130 | ||
0c8d6e5c | 6131 | BFD_ASSERT (is_ppc64_elf (opd_bfd)); |
0ffa91dd | 6132 | |
729eabd5 | 6133 | relocs = ppc64_elf_tdata (opd_bfd)->opd.relocs; |
8860955f AM |
6134 | if (relocs == NULL) |
6135 | relocs = _bfd_elf_link_read_relocs (opd_bfd, opd_sec, NULL, NULL, TRUE); | |
877a8638 NC |
6136 | /* PR 17512: file: df8e1fd6. */ |
6137 | if (relocs == NULL) | |
6138 | return (bfd_vma) -1; | |
645ea6a9 | 6139 | |
8387904d | 6140 | /* Go find the opd reloc at the sym address. */ |
8860955f | 6141 | lo = relocs; |
8387904d | 6142 | hi = lo + opd_sec->reloc_count - 1; /* ignore last reloc */ |
645ea6a9 | 6143 | val = (bfd_vma) -1; |
8387904d AM |
6144 | while (lo < hi) |
6145 | { | |
6146 | look = lo + (hi - lo) / 2; | |
6147 | if (look->r_offset < offset) | |
6148 | lo = look + 1; | |
6149 | else if (look->r_offset > offset) | |
6150 | hi = look; | |
6151 | else | |
6152 | { | |
0ffa91dd NC |
6153 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (opd_bfd); |
6154 | ||
8387904d AM |
6155 | if (ELF64_R_TYPE (look->r_info) == R_PPC64_ADDR64 |
6156 | && ELF64_R_TYPE ((look + 1)->r_info) == R_PPC64_TOC) | |
6157 | { | |
6158 | unsigned long symndx = ELF64_R_SYM (look->r_info); | |
b53dfeb2 | 6159 | asection *sec = NULL; |
8387904d | 6160 | |
b53dfeb2 AM |
6161 | if (symndx >= symtab_hdr->sh_info |
6162 | && elf_sym_hashes (opd_bfd) != NULL) | |
8387904d AM |
6163 | { |
6164 | struct elf_link_hash_entry **sym_hashes; | |
6165 | struct elf_link_hash_entry *rh; | |
6166 | ||
6167 | sym_hashes = elf_sym_hashes (opd_bfd); | |
6168 | rh = sym_hashes[symndx - symtab_hdr->sh_info]; | |
128205bb AM |
6169 | if (rh != NULL) |
6170 | { | |
6171 | rh = elf_follow_link (rh); | |
bb854a36 AM |
6172 | if (rh->root.type != bfd_link_hash_defined |
6173 | && rh->root.type != bfd_link_hash_defweak) | |
6174 | break; | |
6175 | if (rh->root.u.def.section->owner == opd_bfd) | |
b53dfeb2 | 6176 | { |
bb854a36 AM |
6177 | val = rh->root.u.def.value; |
6178 | sec = rh->root.u.def.section; | |
b53dfeb2 AM |
6179 | } |
6180 | } | |
6181 | } | |
6182 | ||
6183 | if (sec == NULL) | |
6184 | { | |
6185 | Elf_Internal_Sym *sym; | |
6186 | ||
6187 | if (symndx < symtab_hdr->sh_info) | |
6188 | { | |
6189 | sym = (Elf_Internal_Sym *) symtab_hdr->contents; | |
6190 | if (sym == NULL) | |
6191 | { | |
6192 | size_t symcnt = symtab_hdr->sh_info; | |
6193 | sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr, | |
6194 | symcnt, 0, | |
6195 | NULL, NULL, NULL); | |
6196 | if (sym == NULL) | |
6197 | break; | |
6198 | symtab_hdr->contents = (bfd_byte *) sym; | |
6199 | } | |
6200 | sym += symndx; | |
128205bb AM |
6201 | } |
6202 | else | |
6203 | { | |
b53dfeb2 AM |
6204 | sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr, |
6205 | 1, symndx, | |
6206 | NULL, NULL, NULL); | |
128205bb AM |
6207 | if (sym == NULL) |
6208 | break; | |
128205bb | 6209 | } |
b53dfeb2 AM |
6210 | sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx); |
6211 | if (sec == NULL) | |
6212 | break; | |
6213 | BFD_ASSERT ((sec->flags & SEC_MERGE) == 0); | |
6214 | val = sym->st_value; | |
8387904d | 6215 | } |
b53dfeb2 | 6216 | |
8387904d AM |
6217 | val += look->r_addend; |
6218 | if (code_off != NULL) | |
6219 | *code_off = val; | |
6220 | if (code_sec != NULL) | |
aef36ac1 AM |
6221 | { |
6222 | if (in_code_sec && *code_sec != sec) | |
6223 | return -1; | |
6224 | else | |
6225 | *code_sec = sec; | |
6226 | } | |
b53dfeb2 | 6227 | if (sec->output_section != NULL) |
8387904d | 6228 | val += sec->output_section->vma + sec->output_offset; |
8387904d AM |
6229 | } |
6230 | break; | |
6231 | } | |
6232 | } | |
645ea6a9 | 6233 | |
645ea6a9 | 6234 | return val; |
8387904d AM |
6235 | } |
6236 | ||
aef36ac1 AM |
6237 | /* If the ELF symbol SYM might be a function in SEC, return the |
6238 | function size and set *CODE_OFF to the function's entry point, | |
6239 | otherwise return zero. */ | |
9f296da3 | 6240 | |
aef36ac1 AM |
6241 | static bfd_size_type |
6242 | ppc64_elf_maybe_function_sym (const asymbol *sym, asection *sec, | |
6243 | bfd_vma *code_off) | |
9f296da3 | 6244 | { |
aef36ac1 AM |
6245 | bfd_size_type size; |
6246 | ||
6247 | if ((sym->flags & (BSF_SECTION_SYM | BSF_FILE | BSF_OBJECT | |
6248 | | BSF_THREAD_LOCAL | BSF_RELC | BSF_SRELC)) != 0) | |
6249 | return 0; | |
6250 | ||
6251 | size = 0; | |
6252 | if (!(sym->flags & BSF_SYNTHETIC)) | |
6253 | size = ((elf_symbol_type *) sym)->internal_elf_sym.st_size; | |
6254 | ||
6255 | if (strcmp (sym->section->name, ".opd") == 0) | |
9f296da3 | 6256 | { |
b07bca4e AM |
6257 | struct _opd_sec_data *opd = get_opd_info (sym->section); |
6258 | bfd_vma symval = sym->value; | |
6259 | ||
6260 | if (opd != NULL | |
6261 | && opd->adjust != NULL | |
6262 | && elf_section_data (sym->section)->relocs != NULL) | |
6263 | { | |
6264 | /* opd_entry_value will use cached relocs that have been | |
6265 | adjusted, but with raw symbols. That means both local | |
6266 | and global symbols need adjusting. */ | |
6267 | long adjust = opd->adjust[OPD_NDX (symval)]; | |
6268 | if (adjust == -1) | |
6269 | return 0; | |
6270 | symval += adjust; | |
6271 | } | |
6272 | ||
6273 | if (opd_entry_value (sym->section, symval, | |
aef36ac1 AM |
6274 | &sec, code_off, TRUE) == (bfd_vma) -1) |
6275 | return 0; | |
6276 | /* An old ABI binary with dot-syms has a size of 24 on the .opd | |
6277 | symbol. This size has nothing to do with the code size of the | |
6278 | function, which is what we're supposed to return, but the | |
6279 | code size isn't available without looking up the dot-sym. | |
6280 | However, doing that would be a waste of time particularly | |
6281 | since elf_find_function will look at the dot-sym anyway. | |
6282 | Now, elf_find_function will keep the largest size of any | |
6283 | function sym found at the code address of interest, so return | |
6284 | 1 here to avoid it incorrectly caching a larger function size | |
6285 | for a small function. This does mean we return the wrong | |
6286 | size for a new-ABI function of size 24, but all that does is | |
6287 | disable caching for such functions. */ | |
6288 | if (size == 24) | |
6289 | size = 1; | |
9f296da3 | 6290 | } |
aef36ac1 AM |
6291 | else |
6292 | { | |
6293 | if (sym->section != sec) | |
6294 | return 0; | |
6295 | *code_off = sym->value; | |
6296 | } | |
6297 | if (size == 0) | |
6298 | size = 1; | |
6299 | return size; | |
9f296da3 AM |
6300 | } |
6301 | ||
854b41e7 AM |
6302 | /* Return true if symbol is defined in a regular object file. */ |
6303 | ||
6304 | static bfd_boolean | |
6305 | is_static_defined (struct elf_link_hash_entry *h) | |
6306 | { | |
6307 | return ((h->root.type == bfd_link_hash_defined | |
6308 | || h->root.type == bfd_link_hash_defweak) | |
6309 | && h->root.u.def.section != NULL | |
6310 | && h->root.u.def.section->output_section != NULL); | |
6311 | } | |
6312 | ||
b31867b6 AM |
6313 | /* If FDH is a function descriptor symbol, return the associated code |
6314 | entry symbol if it is defined. Return NULL otherwise. */ | |
6315 | ||
6316 | static struct ppc_link_hash_entry * | |
6317 | defined_code_entry (struct ppc_link_hash_entry *fdh) | |
6318 | { | |
6319 | if (fdh->is_func_descriptor) | |
6320 | { | |
6321 | struct ppc_link_hash_entry *fh = ppc_follow_link (fdh->oh); | |
6322 | if (fh->elf.root.type == bfd_link_hash_defined | |
6323 | || fh->elf.root.type == bfd_link_hash_defweak) | |
6324 | return fh; | |
6325 | } | |
6326 | return NULL; | |
6327 | } | |
6328 | ||
6329 | /* If FH is a function code entry symbol, return the associated | |
6330 | function descriptor symbol if it is defined. Return NULL otherwise. */ | |
6331 | ||
6332 | static struct ppc_link_hash_entry * | |
6333 | defined_func_desc (struct ppc_link_hash_entry *fh) | |
6334 | { | |
6335 | if (fh->oh != NULL | |
6336 | && fh->oh->is_func_descriptor) | |
6337 | { | |
6338 | struct ppc_link_hash_entry *fdh = ppc_follow_link (fh->oh); | |
6339 | if (fdh->elf.root.type == bfd_link_hash_defined | |
6340 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
6341 | return fdh; | |
6342 | } | |
6343 | return NULL; | |
6344 | } | |
6345 | ||
74f0fb50 AM |
6346 | /* Mark all our entry sym sections, both opd and code section. */ |
6347 | ||
6348 | static void | |
6349 | ppc64_elf_gc_keep (struct bfd_link_info *info) | |
6350 | { | |
6351 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
6352 | struct bfd_sym_chain *sym; | |
6353 | ||
4dfe6ac6 NC |
6354 | if (htab == NULL) |
6355 | return; | |
6356 | ||
74f0fb50 AM |
6357 | for (sym = info->gc_sym_list; sym != NULL; sym = sym->next) |
6358 | { | |
b31867b6 | 6359 | struct ppc_link_hash_entry *eh, *fh; |
74f0fb50 AM |
6360 | asection *sec; |
6361 | ||
6362 | eh = (struct ppc_link_hash_entry *) | |
b31867b6 | 6363 | elf_link_hash_lookup (&htab->elf, sym->name, FALSE, FALSE, TRUE); |
74f0fb50 AM |
6364 | if (eh == NULL) |
6365 | continue; | |
6366 | if (eh->elf.root.type != bfd_link_hash_defined | |
6367 | && eh->elf.root.type != bfd_link_hash_defweak) | |
6368 | continue; | |
6369 | ||
b31867b6 AM |
6370 | fh = defined_code_entry (eh); |
6371 | if (fh != NULL) | |
74f0fb50 | 6372 | { |
b31867b6 | 6373 | sec = fh->elf.root.u.def.section; |
74f0fb50 AM |
6374 | sec->flags |= SEC_KEEP; |
6375 | } | |
6376 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL | |
6377 | && opd_entry_value (eh->elf.root.u.def.section, | |
6378 | eh->elf.root.u.def.value, | |
aef36ac1 | 6379 | &sec, NULL, FALSE) != (bfd_vma) -1) |
74f0fb50 AM |
6380 | sec->flags |= SEC_KEEP; |
6381 | ||
6382 | sec = eh->elf.root.u.def.section; | |
6383 | sec->flags |= SEC_KEEP; | |
6384 | } | |
6385 | } | |
6386 | ||
64d03ab5 AM |
6387 | /* Mark sections containing dynamically referenced symbols. When |
6388 | building shared libraries, we must assume that any visible symbol is | |
6389 | referenced. */ | |
6390 | ||
6391 | static bfd_boolean | |
6392 | ppc64_elf_gc_mark_dynamic_ref (struct elf_link_hash_entry *h, void *inf) | |
6393 | { | |
6394 | struct bfd_link_info *info = (struct bfd_link_info *) inf; | |
6395 | struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h; | |
b31867b6 | 6396 | struct ppc_link_hash_entry *fdh; |
b407645f | 6397 | struct bfd_elf_dynamic_list *d = info->dynamic_list; |
64d03ab5 | 6398 | |
64d03ab5 | 6399 | /* Dynamic linking info is on the func descriptor sym. */ |
b31867b6 AM |
6400 | fdh = defined_func_desc (eh); |
6401 | if (fdh != NULL) | |
6402 | eh = fdh; | |
64d03ab5 AM |
6403 | |
6404 | if ((eh->elf.root.type == bfd_link_hash_defined | |
6405 | || eh->elf.root.type == bfd_link_hash_defweak) | |
6406 | && (eh->elf.ref_dynamic | |
1c9177d9 | 6407 | || ((eh->elf.def_regular || ELF_COMMON_DEF_P (&eh->elf)) |
64d03ab5 | 6408 | && ELF_ST_VISIBILITY (eh->elf.other) != STV_INTERNAL |
4c58e0d8 | 6409 | && ELF_ST_VISIBILITY (eh->elf.other) != STV_HIDDEN |
0e1862bb | 6410 | && (!bfd_link_executable (info) |
b407645f AM |
6411 | || info->export_dynamic |
6412 | || (eh->elf.dynamic | |
6413 | && d != NULL | |
6414 | && (*d->match) (&d->head, NULL, eh->elf.root.root.string))) | |
4c58e0d8 AM |
6415 | && (strchr (eh->elf.root.root.string, ELF_VER_CHR) != NULL |
6416 | || !bfd_hide_sym_by_version (info->version_info, | |
6417 | eh->elf.root.root.string))))) | |
64d03ab5 AM |
6418 | { |
6419 | asection *code_sec; | |
b31867b6 | 6420 | struct ppc_link_hash_entry *fh; |
64d03ab5 AM |
6421 | |
6422 | eh->elf.root.u.def.section->flags |= SEC_KEEP; | |
6423 | ||
6424 | /* Function descriptor syms cause the associated | |
6425 | function code sym section to be marked. */ | |
b31867b6 AM |
6426 | fh = defined_code_entry (eh); |
6427 | if (fh != NULL) | |
6428 | { | |
6429 | code_sec = fh->elf.root.u.def.section; | |
6430 | code_sec->flags |= SEC_KEEP; | |
6431 | } | |
64d03ab5 AM |
6432 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL |
6433 | && opd_entry_value (eh->elf.root.u.def.section, | |
6434 | eh->elf.root.u.def.value, | |
aef36ac1 | 6435 | &code_sec, NULL, FALSE) != (bfd_vma) -1) |
64d03ab5 AM |
6436 | code_sec->flags |= SEC_KEEP; |
6437 | } | |
6438 | ||
6439 | return TRUE; | |
6440 | } | |
6441 | ||
5bd4f169 AM |
6442 | /* Return the section that should be marked against GC for a given |
6443 | relocation. */ | |
6444 | ||
6445 | static asection * | |
4ce794b7 | 6446 | ppc64_elf_gc_mark_hook (asection *sec, |
fb34365b | 6447 | struct bfd_link_info *info, |
4ce794b7 AM |
6448 | Elf_Internal_Rela *rel, |
6449 | struct elf_link_hash_entry *h, | |
6450 | Elf_Internal_Sym *sym) | |
5bd4f169 | 6451 | { |
ccfa59ea AM |
6452 | asection *rsec; |
6453 | ||
ccfa59ea AM |
6454 | /* Syms return NULL if we're marking .opd, so we avoid marking all |
6455 | function sections, as all functions are referenced in .opd. */ | |
6456 | rsec = NULL; | |
6457 | if (get_opd_info (sec) != NULL) | |
6458 | return rsec; | |
1e2f5b6e | 6459 | |
5bd4f169 AM |
6460 | if (h != NULL) |
6461 | { | |
04c9666a | 6462 | enum elf_ppc64_reloc_type r_type; |
b31867b6 | 6463 | struct ppc_link_hash_entry *eh, *fh, *fdh; |
a33d1f77 | 6464 | |
4ce794b7 | 6465 | r_type = ELF64_R_TYPE (rel->r_info); |
a33d1f77 | 6466 | switch (r_type) |
5bd4f169 AM |
6467 | { |
6468 | case R_PPC64_GNU_VTINHERIT: | |
6469 | case R_PPC64_GNU_VTENTRY: | |
6470 | break; | |
6471 | ||
6472 | default: | |
6473 | switch (h->root.type) | |
6474 | { | |
6475 | case bfd_link_hash_defined: | |
6476 | case bfd_link_hash_defweak: | |
ccfa59ea | 6477 | eh = (struct ppc_link_hash_entry *) h; |
b31867b6 AM |
6478 | fdh = defined_func_desc (eh); |
6479 | if (fdh != NULL) | |
6480 | eh = fdh; | |
1e2f5b6e AM |
6481 | |
6482 | /* Function descriptor syms cause the associated | |
6483 | function code sym section to be marked. */ | |
b31867b6 AM |
6484 | fh = defined_code_entry (eh); |
6485 | if (fh != NULL) | |
ccfa59ea AM |
6486 | { |
6487 | /* They also mark their opd section. */ | |
74f0fb50 | 6488 | eh->elf.root.u.def.section->gc_mark = 1; |
ccfa59ea | 6489 | |
b31867b6 | 6490 | rsec = fh->elf.root.u.def.section; |
ccfa59ea | 6491 | } |
8387904d AM |
6492 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL |
6493 | && opd_entry_value (eh->elf.root.u.def.section, | |
6494 | eh->elf.root.u.def.value, | |
aef36ac1 | 6495 | &rsec, NULL, FALSE) != (bfd_vma) -1) |
74f0fb50 | 6496 | eh->elf.root.u.def.section->gc_mark = 1; |
ccfa59ea | 6497 | else |
1e2f5b6e AM |
6498 | rsec = h->root.u.def.section; |
6499 | break; | |
5bd4f169 AM |
6500 | |
6501 | case bfd_link_hash_common: | |
1e2f5b6e AM |
6502 | rsec = h->root.u.c.p->section; |
6503 | break; | |
5bd4f169 AM |
6504 | |
6505 | default: | |
fb34365b | 6506 | return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); |
5bd4f169 AM |
6507 | } |
6508 | } | |
6509 | } | |
6510 | else | |
6511 | { | |
74f0fb50 | 6512 | struct _opd_sec_data *opd; |
1e2f5b6e AM |
6513 | |
6514 | rsec = bfd_section_from_elf_index (sec->owner, sym->st_shndx); | |
74f0fb50 AM |
6515 | opd = get_opd_info (rsec); |
6516 | if (opd != NULL && opd->func_sec != NULL) | |
ccfa59ea | 6517 | { |
74f0fb50 | 6518 | rsec->gc_mark = 1; |
ccfa59ea | 6519 | |
51aecdc5 | 6520 | rsec = opd->func_sec[OPD_NDX (sym->st_value + rel->r_addend)]; |
ccfa59ea | 6521 | } |
5bd4f169 AM |
6522 | } |
6523 | ||
1e2f5b6e | 6524 | return rsec; |
5bd4f169 AM |
6525 | } |
6526 | ||
65f38f15 AM |
6527 | /* Update the .got, .plt. and dynamic reloc reference counts for the |
6528 | section being removed. */ | |
5bd4f169 | 6529 | |
b34976b6 | 6530 | static bfd_boolean |
4ce794b7 AM |
6531 | ppc64_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info, |
6532 | asection *sec, const Elf_Internal_Rela *relocs) | |
5bd4f169 | 6533 | { |
411e1bfb | 6534 | struct ppc_link_hash_table *htab; |
5bd4f169 AM |
6535 | Elf_Internal_Shdr *symtab_hdr; |
6536 | struct elf_link_hash_entry **sym_hashes; | |
411e1bfb | 6537 | struct got_entry **local_got_ents; |
5bd4f169 | 6538 | const Elf_Internal_Rela *rel, *relend; |
5bd4f169 | 6539 | |
0e1862bb | 6540 | if (bfd_link_relocatable (info)) |
7dda2462 TG |
6541 | return TRUE; |
6542 | ||
680a3378 AM |
6543 | if ((sec->flags & SEC_ALLOC) == 0) |
6544 | return TRUE; | |
6545 | ||
ec338859 AM |
6546 | elf_section_data (sec)->local_dynrel = NULL; |
6547 | ||
411e1bfb | 6548 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
6549 | if (htab == NULL) |
6550 | return FALSE; | |
6551 | ||
0ffa91dd | 6552 | symtab_hdr = &elf_symtab_hdr (abfd); |
5bd4f169 | 6553 | sym_hashes = elf_sym_hashes (abfd); |
411e1bfb | 6554 | local_got_ents = elf_local_got_ents (abfd); |
5bd4f169 AM |
6555 | |
6556 | relend = relocs + sec->reloc_count; | |
6557 | for (rel = relocs; rel < relend; rel++) | |
a33d1f77 AM |
6558 | { |
6559 | unsigned long r_symndx; | |
04c9666a | 6560 | enum elf_ppc64_reloc_type r_type; |
58ac9f71 | 6561 | struct elf_link_hash_entry *h = NULL; |
cbf95972 | 6562 | struct plt_entry **plt_list; |
f961d9dd | 6563 | unsigned char tls_type = 0; |
5bd4f169 | 6564 | |
a33d1f77 | 6565 | r_symndx = ELF64_R_SYM (rel->r_info); |
4ce794b7 | 6566 | r_type = ELF64_R_TYPE (rel->r_info); |
58ac9f71 AM |
6567 | if (r_symndx >= symtab_hdr->sh_info) |
6568 | { | |
6569 | struct ppc_link_hash_entry *eh; | |
6061a67d AM |
6570 | struct elf_dyn_relocs **pp; |
6571 | struct elf_dyn_relocs *p; | |
58ac9f71 AM |
6572 | |
6573 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
b31867b6 | 6574 | h = elf_follow_link (h); |
58ac9f71 AM |
6575 | eh = (struct ppc_link_hash_entry *) h; |
6576 | ||
6577 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next) | |
6578 | if (p->sec == sec) | |
6579 | { | |
6580 | /* Everything must go for SEC. */ | |
6581 | *pp = p->next; | |
6582 | break; | |
6583 | } | |
6584 | } | |
6585 | ||
a33d1f77 AM |
6586 | switch (r_type) |
6587 | { | |
411e1bfb AM |
6588 | case R_PPC64_GOT_TLSLD16: |
6589 | case R_PPC64_GOT_TLSLD16_LO: | |
6590 | case R_PPC64_GOT_TLSLD16_HI: | |
6591 | case R_PPC64_GOT_TLSLD16_HA: | |
951fd09b | 6592 | tls_type = TLS_TLS | TLS_LD; |
411e1bfb AM |
6593 | goto dogot; |
6594 | ||
6595 | case R_PPC64_GOT_TLSGD16: | |
6596 | case R_PPC64_GOT_TLSGD16_LO: | |
6597 | case R_PPC64_GOT_TLSGD16_HI: | |
6598 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b | 6599 | tls_type = TLS_TLS | TLS_GD; |
411e1bfb AM |
6600 | goto dogot; |
6601 | ||
6602 | case R_PPC64_GOT_TPREL16_DS: | |
6603 | case R_PPC64_GOT_TPREL16_LO_DS: | |
6604 | case R_PPC64_GOT_TPREL16_HI: | |
6605 | case R_PPC64_GOT_TPREL16_HA: | |
6606 | tls_type = TLS_TLS | TLS_TPREL; | |
6607 | goto dogot; | |
6608 | ||
6609 | case R_PPC64_GOT_DTPREL16_DS: | |
6610 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
6611 | case R_PPC64_GOT_DTPREL16_HI: | |
6612 | case R_PPC64_GOT_DTPREL16_HA: | |
6613 | tls_type = TLS_TLS | TLS_DTPREL; | |
6614 | goto dogot; | |
6615 | ||
a33d1f77 AM |
6616 | case R_PPC64_GOT16: |
6617 | case R_PPC64_GOT16_DS: | |
6618 | case R_PPC64_GOT16_HA: | |
6619 | case R_PPC64_GOT16_HI: | |
6620 | case R_PPC64_GOT16_LO: | |
6621 | case R_PPC64_GOT16_LO_DS: | |
411e1bfb AM |
6622 | dogot: |
6623 | { | |
6624 | struct got_entry *ent; | |
6625 | ||
58ac9f71 AM |
6626 | if (h != NULL) |
6627 | ent = h->got.glist; | |
411e1bfb AM |
6628 | else |
6629 | ent = local_got_ents[r_symndx]; | |
6630 | ||
6631 | for (; ent != NULL; ent = ent->next) | |
6632 | if (ent->addend == rel->r_addend | |
e717da7e | 6633 | && ent->owner == abfd |
411e1bfb AM |
6634 | && ent->tls_type == tls_type) |
6635 | break; | |
6636 | if (ent == NULL) | |
6637 | abort (); | |
6638 | if (ent->got.refcount > 0) | |
6639 | ent->got.refcount -= 1; | |
6640 | } | |
a33d1f77 | 6641 | break; |
65f38f15 | 6642 | |
a33d1f77 AM |
6643 | case R_PPC64_PLT16_HA: |
6644 | case R_PPC64_PLT16_HI: | |
6645 | case R_PPC64_PLT16_LO: | |
6646 | case R_PPC64_PLT32: | |
6647 | case R_PPC64_PLT64: | |
721956f4 AM |
6648 | case R_PPC64_REL14: |
6649 | case R_PPC64_REL14_BRNTAKEN: | |
6650 | case R_PPC64_REL14_BRTAKEN: | |
5d1634d7 | 6651 | case R_PPC64_REL24: |
cbf95972 | 6652 | plt_list = NULL; |
58ac9f71 | 6653 | if (h != NULL) |
cbf95972 AM |
6654 | plt_list = &h->plt.plist; |
6655 | else if (local_got_ents != NULL) | |
6656 | { | |
6657 | struct plt_entry **local_plt = (struct plt_entry **) | |
6658 | (local_got_ents + symtab_hdr->sh_info); | |
6659 | unsigned char *local_got_tls_masks = (unsigned char *) | |
6660 | (local_plt + symtab_hdr->sh_info); | |
6661 | if ((local_got_tls_masks[r_symndx] & PLT_IFUNC) != 0) | |
6662 | plt_list = local_plt + r_symndx; | |
6663 | } | |
6664 | if (plt_list) | |
5d1634d7 | 6665 | { |
411e1bfb AM |
6666 | struct plt_entry *ent; |
6667 | ||
cbf95972 | 6668 | for (ent = *plt_list; ent != NULL; ent = ent->next) |
411e1bfb AM |
6669 | if (ent->addend == rel->r_addend) |
6670 | break; | |
7c6c1722 | 6671 | if (ent != NULL && ent->plt.refcount > 0) |
411e1bfb | 6672 | ent->plt.refcount -= 1; |
5d1634d7 | 6673 | } |
e86ce104 | 6674 | break; |
5d1634d7 | 6675 | |
a33d1f77 AM |
6676 | default: |
6677 | break; | |
6678 | } | |
6679 | } | |
b34976b6 | 6680 | return TRUE; |
5bd4f169 AM |
6681 | } |
6682 | ||
deb0e272 AM |
6683 | /* The maximum size of .sfpr. */ |
6684 | #define SFPR_MAX (218*4) | |
6685 | ||
6686 | struct sfpr_def_parms | |
6687 | { | |
699733f6 AM |
6688 | const char name[12]; |
6689 | unsigned char lo, hi; | |
deb0e272 AM |
6690 | bfd_byte * (*write_ent) (bfd *, bfd_byte *, int); |
6691 | bfd_byte * (*write_tail) (bfd *, bfd_byte *, int); | |
6692 | }; | |
6693 | ||
a4b6fadd AM |
6694 | /* Auto-generate _save*, _rest* functions in .sfpr. |
6695 | If STUB_SEC is non-null, define alias symbols in STUB_SEC | |
6696 | instead. */ | |
deb0e272 | 6697 | |
4dfe6ac6 | 6698 | static bfd_boolean |
a4b6fadd AM |
6699 | sfpr_define (struct bfd_link_info *info, |
6700 | const struct sfpr_def_parms *parm, | |
6701 | asection *stub_sec) | |
deb0e272 AM |
6702 | { |
6703 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
6704 | unsigned int i; | |
6705 | size_t len = strlen (parm->name); | |
6706 | bfd_boolean writing = FALSE; | |
699733f6 | 6707 | char sym[16]; |
deb0e272 | 6708 | |
4dfe6ac6 NC |
6709 | if (htab == NULL) |
6710 | return FALSE; | |
6711 | ||
deb0e272 AM |
6712 | memcpy (sym, parm->name, len); |
6713 | sym[len + 2] = 0; | |
6714 | ||
6715 | for (i = parm->lo; i <= parm->hi; i++) | |
6716 | { | |
a4b6fadd | 6717 | struct ppc_link_hash_entry *h; |
deb0e272 AM |
6718 | |
6719 | sym[len + 0] = i / 10 + '0'; | |
6720 | sym[len + 1] = i % 10 + '0'; | |
a4b6fadd | 6721 | h = (struct ppc_link_hash_entry *) |
b32547cd | 6722 | elf_link_hash_lookup (&htab->elf, sym, writing, TRUE, TRUE); |
a4b6fadd | 6723 | if (stub_sec != NULL) |
deb0e272 | 6724 | { |
a4b6fadd AM |
6725 | if (h != NULL |
6726 | && h->elf.root.type == bfd_link_hash_defined | |
6727 | && h->elf.root.u.def.section == htab->sfpr) | |
6728 | { | |
6729 | struct elf_link_hash_entry *s; | |
6730 | char buf[32]; | |
6731 | sprintf (buf, "%08x.%s", stub_sec->id & 0xffffffff, sym); | |
6732 | s = elf_link_hash_lookup (&htab->elf, buf, TRUE, TRUE, FALSE); | |
6733 | if (s == NULL) | |
6734 | return FALSE; | |
6735 | if (s->root.type == bfd_link_hash_new | |
6736 | || (s->root.type = bfd_link_hash_defined | |
6737 | && s->root.u.def.section == stub_sec)) | |
6738 | { | |
6739 | s->root.type = bfd_link_hash_defined; | |
6740 | s->root.u.def.section = stub_sec; | |
6741 | s->root.u.def.value = (stub_sec->size | |
6742 | + h->elf.root.u.def.value); | |
6743 | s->ref_regular = 1; | |
6744 | s->def_regular = 1; | |
6745 | s->ref_regular_nonweak = 1; | |
6746 | s->forced_local = 1; | |
6747 | s->non_elf = 0; | |
6748 | s->root.linker_def = 1; | |
6749 | } | |
6750 | } | |
6751 | continue; | |
6752 | } | |
6753 | if (h != NULL) | |
6754 | { | |
6755 | h->save_res = 1; | |
6756 | if (!h->elf.def_regular) | |
deb0e272 | 6757 | { |
a4b6fadd AM |
6758 | h->elf.root.type = bfd_link_hash_defined; |
6759 | h->elf.root.u.def.section = htab->sfpr; | |
6760 | h->elf.root.u.def.value = htab->sfpr->size; | |
6761 | h->elf.type = STT_FUNC; | |
6762 | h->elf.def_regular = 1; | |
b32547cd | 6763 | h->elf.non_elf = 0; |
a4b6fadd AM |
6764 | _bfd_elf_link_hash_hide_symbol (info, &h->elf, TRUE); |
6765 | writing = TRUE; | |
deb0e272 | 6766 | if (htab->sfpr->contents == NULL) |
a4b6fadd AM |
6767 | { |
6768 | htab->sfpr->contents = bfd_alloc (htab->elf.dynobj, SFPR_MAX); | |
6769 | if (htab->sfpr->contents == NULL) | |
6770 | return FALSE; | |
6771 | } | |
deb0e272 AM |
6772 | } |
6773 | } | |
6774 | if (writing) | |
6775 | { | |
6776 | bfd_byte *p = htab->sfpr->contents + htab->sfpr->size; | |
6777 | if (i != parm->hi) | |
6778 | p = (*parm->write_ent) (htab->elf.dynobj, p, i); | |
6779 | else | |
6780 | p = (*parm->write_tail) (htab->elf.dynobj, p, i); | |
6781 | htab->sfpr->size = p - htab->sfpr->contents; | |
6782 | } | |
6783 | } | |
6784 | ||
6785 | return TRUE; | |
6786 | } | |
6787 | ||
6788 | static bfd_byte * | |
6789 | savegpr0 (bfd *abfd, bfd_byte *p, int r) | |
6790 | { | |
6791 | bfd_put_32 (abfd, STD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
6792 | return p + 4; | |
6793 | } | |
6794 | ||
6795 | static bfd_byte * | |
6796 | savegpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
6797 | { | |
6798 | p = savegpr0 (abfd, p, r); | |
a078d95a | 6799 | bfd_put_32 (abfd, STD_R0_0R1 + STK_LR, p); |
deb0e272 AM |
6800 | p = p + 4; |
6801 | bfd_put_32 (abfd, BLR, p); | |
6802 | return p + 4; | |
6803 | } | |
6804 | ||
6805 | static bfd_byte * | |
6806 | restgpr0 (bfd *abfd, bfd_byte *p, int r) | |
6807 | { | |
6808 | bfd_put_32 (abfd, LD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
6809 | return p + 4; | |
6810 | } | |
6811 | ||
6812 | static bfd_byte * | |
6813 | restgpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
6814 | { | |
a078d95a | 6815 | bfd_put_32 (abfd, LD_R0_0R1 + STK_LR, p); |
deb0e272 AM |
6816 | p = p + 4; |
6817 | p = restgpr0 (abfd, p, r); | |
6818 | bfd_put_32 (abfd, MTLR_R0, p); | |
6819 | p = p + 4; | |
6820 | if (r == 29) | |
6821 | { | |
6822 | p = restgpr0 (abfd, p, 30); | |
6823 | p = restgpr0 (abfd, p, 31); | |
6824 | } | |
6825 | bfd_put_32 (abfd, BLR, p); | |
6826 | return p + 4; | |
6827 | } | |
6828 | ||
6829 | static bfd_byte * | |
6830 | savegpr1 (bfd *abfd, bfd_byte *p, int r) | |
6831 | { | |
6832 | bfd_put_32 (abfd, STD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
6833 | return p + 4; | |
6834 | } | |
6835 | ||
6836 | static bfd_byte * | |
6837 | savegpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
6838 | { | |
6839 | p = savegpr1 (abfd, p, r); | |
6840 | bfd_put_32 (abfd, BLR, p); | |
6841 | return p + 4; | |
6842 | } | |
6843 | ||
6844 | static bfd_byte * | |
6845 | restgpr1 (bfd *abfd, bfd_byte *p, int r) | |
6846 | { | |
6847 | bfd_put_32 (abfd, LD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
6848 | return p + 4; | |
6849 | } | |
6850 | ||
6851 | static bfd_byte * | |
6852 | restgpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
6853 | { | |
6854 | p = restgpr1 (abfd, p, r); | |
6855 | bfd_put_32 (abfd, BLR, p); | |
6856 | return p + 4; | |
6857 | } | |
6858 | ||
6859 | static bfd_byte * | |
6860 | savefpr (bfd *abfd, bfd_byte *p, int r) | |
6861 | { | |
6862 | bfd_put_32 (abfd, STFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
6863 | return p + 4; | |
6864 | } | |
6865 | ||
6866 | static bfd_byte * | |
6867 | savefpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
6868 | { | |
6869 | p = savefpr (abfd, p, r); | |
a078d95a | 6870 | bfd_put_32 (abfd, STD_R0_0R1 + STK_LR, p); |
deb0e272 AM |
6871 | p = p + 4; |
6872 | bfd_put_32 (abfd, BLR, p); | |
6873 | return p + 4; | |
6874 | } | |
6875 | ||
6876 | static bfd_byte * | |
6877 | restfpr (bfd *abfd, bfd_byte *p, int r) | |
6878 | { | |
6879 | bfd_put_32 (abfd, LFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
6880 | return p + 4; | |
6881 | } | |
6882 | ||
6883 | static bfd_byte * | |
6884 | restfpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
6885 | { | |
a078d95a | 6886 | bfd_put_32 (abfd, LD_R0_0R1 + STK_LR, p); |
deb0e272 AM |
6887 | p = p + 4; |
6888 | p = restfpr (abfd, p, r); | |
6889 | bfd_put_32 (abfd, MTLR_R0, p); | |
6890 | p = p + 4; | |
6891 | if (r == 29) | |
6892 | { | |
6893 | p = restfpr (abfd, p, 30); | |
6894 | p = restfpr (abfd, p, 31); | |
6895 | } | |
6896 | bfd_put_32 (abfd, BLR, p); | |
6897 | return p + 4; | |
6898 | } | |
6899 | ||
6900 | static bfd_byte * | |
6901 | savefpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
6902 | { | |
6903 | p = savefpr (abfd, p, r); | |
6904 | bfd_put_32 (abfd, BLR, p); | |
6905 | return p + 4; | |
6906 | } | |
6907 | ||
6908 | static bfd_byte * | |
6909 | restfpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
6910 | { | |
6911 | p = restfpr (abfd, p, r); | |
6912 | bfd_put_32 (abfd, BLR, p); | |
6913 | return p + 4; | |
6914 | } | |
6915 | ||
6916 | static bfd_byte * | |
6917 | savevr (bfd *abfd, bfd_byte *p, int r) | |
6918 | { | |
6919 | bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p); | |
6920 | p = p + 4; | |
6921 | bfd_put_32 (abfd, STVX_VR0_R12_R0 + (r << 21), p); | |
6922 | return p + 4; | |
6923 | } | |
6924 | ||
6925 | static bfd_byte * | |
6926 | savevr_tail (bfd *abfd, bfd_byte *p, int r) | |
6927 | { | |
6928 | p = savevr (abfd, p, r); | |
6929 | bfd_put_32 (abfd, BLR, p); | |
6930 | return p + 4; | |
6931 | } | |
6932 | ||
6933 | static bfd_byte * | |
6934 | restvr (bfd *abfd, bfd_byte *p, int r) | |
6935 | { | |
6936 | bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p); | |
6937 | p = p + 4; | |
6938 | bfd_put_32 (abfd, LVX_VR0_R12_R0 + (r << 21), p); | |
6939 | return p + 4; | |
6940 | } | |
6941 | ||
6942 | static bfd_byte * | |
6943 | restvr_tail (bfd *abfd, bfd_byte *p, int r) | |
6944 | { | |
6945 | p = restvr (abfd, p, r); | |
6946 | bfd_put_32 (abfd, BLR, p); | |
6947 | return p + 4; | |
6948 | } | |
6949 | ||
e86ce104 AM |
6950 | /* Called via elf_link_hash_traverse to transfer dynamic linking |
6951 | information on function code symbol entries to their corresponding | |
6952 | function descriptor symbol entries. */ | |
deb0e272 | 6953 | |
b34976b6 | 6954 | static bfd_boolean |
4ce794b7 | 6955 | func_desc_adjust (struct elf_link_hash_entry *h, void *inf) |
5bd4f169 | 6956 | { |
e86ce104 | 6957 | struct bfd_link_info *info; |
65f38f15 | 6958 | struct ppc_link_hash_table *htab; |
411e1bfb | 6959 | struct plt_entry *ent; |
50bc7936 AM |
6960 | struct ppc_link_hash_entry *fh; |
6961 | struct ppc_link_hash_entry *fdh; | |
6962 | bfd_boolean force_local; | |
5bd4f169 | 6963 | |
50bc7936 AM |
6964 | fh = (struct ppc_link_hash_entry *) h; |
6965 | if (fh->elf.root.type == bfd_link_hash_indirect) | |
b34976b6 | 6966 | return TRUE; |
e86ce104 | 6967 | |
4ce794b7 | 6968 | info = inf; |
65f38f15 | 6969 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
6970 | if (htab == NULL) |
6971 | return FALSE; | |
5bd4f169 | 6972 | |
c09bdfe5 AM |
6973 | /* Resolve undefined references to dot-symbols as the value |
6974 | in the function descriptor, if we have one in a regular object. | |
6975 | This is to satisfy cases like ".quad .foo". Calls to functions | |
6976 | in dynamic objects are handled elsewhere. */ | |
6977 | if (fh->elf.root.type == bfd_link_hash_undefweak | |
6978 | && fh->was_undefined | |
b31867b6 AM |
6979 | && (fdh = defined_func_desc (fh)) != NULL |
6980 | && get_opd_info (fdh->elf.root.u.def.section) != NULL | |
6981 | && opd_entry_value (fdh->elf.root.u.def.section, | |
6982 | fdh->elf.root.u.def.value, | |
c09bdfe5 | 6983 | &fh->elf.root.u.def.section, |
aef36ac1 | 6984 | &fh->elf.root.u.def.value, FALSE) != (bfd_vma) -1) |
c09bdfe5 | 6985 | { |
b31867b6 | 6986 | fh->elf.root.type = fdh->elf.root.type; |
f5385ebf | 6987 | fh->elf.forced_local = 1; |
b31867b6 AM |
6988 | fh->elf.def_regular = fdh->elf.def_regular; |
6989 | fh->elf.def_dynamic = fdh->elf.def_dynamic; | |
c09bdfe5 AM |
6990 | } |
6991 | ||
e86ce104 AM |
6992 | /* If this is a function code symbol, transfer dynamic linking |
6993 | information to the function descriptor symbol. */ | |
50bc7936 | 6994 | if (!fh->is_func) |
b34976b6 | 6995 | return TRUE; |
e86ce104 | 6996 | |
50bc7936 | 6997 | for (ent = fh->elf.plt.plist; ent != NULL; ent = ent->next) |
411e1bfb AM |
6998 | if (ent->plt.refcount > 0) |
6999 | break; | |
50bc7936 AM |
7000 | if (ent == NULL |
7001 | || fh->elf.root.root.string[0] != '.' | |
7002 | || fh->elf.root.root.string[1] == '\0') | |
7003 | return TRUE; | |
5bd4f169 | 7004 | |
50bc7936 AM |
7005 | /* Find the corresponding function descriptor symbol. Create it |
7006 | as undefined if necessary. */ | |
5bd4f169 | 7007 | |
b31867b6 | 7008 | fdh = lookup_fdh (fh, htab); |
50bc7936 | 7009 | if (fdh == NULL |
0e1862bb | 7010 | && !bfd_link_executable (info) |
50bc7936 AM |
7011 | && (fh->elf.root.type == bfd_link_hash_undefined |
7012 | || fh->elf.root.type == bfd_link_hash_undefweak)) | |
7013 | { | |
908b32fc | 7014 | fdh = make_fdh (info, fh); |
bb700d78 AM |
7015 | if (fdh == NULL) |
7016 | return FALSE; | |
50bc7936 | 7017 | } |
648cca2c | 7018 | |
908b32fc | 7019 | /* Fake function descriptors are made undefweak. If the function |
433817dd AM |
7020 | code symbol is strong undefined, make the fake sym the same. |
7021 | If the function code symbol is defined, then force the fake | |
7022 | descriptor local; We can't support overriding of symbols in a | |
7023 | shared library on a fake descriptor. */ | |
908b32fc AM |
7024 | |
7025 | if (fdh != NULL | |
7026 | && fdh->fake | |
433817dd | 7027 | && fdh->elf.root.type == bfd_link_hash_undefweak) |
908b32fc | 7028 | { |
433817dd AM |
7029 | if (fh->elf.root.type == bfd_link_hash_undefined) |
7030 | { | |
7031 | fdh->elf.root.type = bfd_link_hash_undefined; | |
7032 | bfd_link_add_undef (&htab->elf.root, &fdh->elf.root); | |
7033 | } | |
7034 | else if (fh->elf.root.type == bfd_link_hash_defined | |
7035 | || fh->elf.root.type == bfd_link_hash_defweak) | |
7036 | { | |
7037 | _bfd_elf_link_hash_hide_symbol (info, &fdh->elf, TRUE); | |
7038 | } | |
908b32fc AM |
7039 | } |
7040 | ||
50bc7936 | 7041 | if (fdh != NULL |
f5385ebf | 7042 | && !fdh->elf.forced_local |
0e1862bb | 7043 | && (!bfd_link_executable (info) |
f5385ebf AM |
7044 | || fdh->elf.def_dynamic |
7045 | || fdh->elf.ref_dynamic | |
50bc7936 AM |
7046 | || (fdh->elf.root.type == bfd_link_hash_undefweak |
7047 | && ELF_ST_VISIBILITY (fdh->elf.other) == STV_DEFAULT))) | |
7048 | { | |
7049 | if (fdh->elf.dynindx == -1) | |
c152c796 | 7050 | if (! bfd_elf_link_record_dynamic_symbol (info, &fdh->elf)) |
50bc7936 | 7051 | return FALSE; |
f5385ebf AM |
7052 | fdh->elf.ref_regular |= fh->elf.ref_regular; |
7053 | fdh->elf.ref_dynamic |= fh->elf.ref_dynamic; | |
7054 | fdh->elf.ref_regular_nonweak |= fh->elf.ref_regular_nonweak; | |
7055 | fdh->elf.non_got_ref |= fh->elf.non_got_ref; | |
50bc7936 | 7056 | if (ELF_ST_VISIBILITY (fh->elf.other) == STV_DEFAULT) |
e86ce104 | 7057 | { |
40d16e0b | 7058 | move_plt_plist (fh, fdh); |
f5385ebf | 7059 | fdh->elf.needs_plt = 1; |
e86ce104 | 7060 | } |
50bc7936 | 7061 | fdh->is_func_descriptor = 1; |
34814b9f AM |
7062 | fdh->oh = fh; |
7063 | fh->oh = fdh; | |
e86ce104 AM |
7064 | } |
7065 | ||
50bc7936 AM |
7066 | /* Now that the info is on the function descriptor, clear the |
7067 | function code sym info. Any function code syms for which we | |
7068 | don't have a definition in a regular file, we force local. | |
7069 | This prevents a shared library from exporting syms that have | |
7070 | been imported from another library. Function code syms that | |
7071 | are really in the library we must leave global to prevent the | |
7072 | linker dragging in a definition from a static library. */ | |
93f3fa99 AM |
7073 | force_local = (!fh->elf.def_regular |
7074 | || fdh == NULL | |
7075 | || !fdh->elf.def_regular | |
7076 | || fdh->elf.forced_local); | |
50bc7936 AM |
7077 | _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local); |
7078 | ||
b34976b6 | 7079 | return TRUE; |
e86ce104 | 7080 | } |
40b8271b | 7081 | |
a4b6fadd AM |
7082 | static const struct sfpr_def_parms save_res_funcs[] = |
7083 | { | |
7084 | { "_savegpr0_", 14, 31, savegpr0, savegpr0_tail }, | |
7085 | { "_restgpr0_", 14, 29, restgpr0, restgpr0_tail }, | |
7086 | { "_restgpr0_", 30, 31, restgpr0, restgpr0_tail }, | |
7087 | { "_savegpr1_", 14, 31, savegpr1, savegpr1_tail }, | |
7088 | { "_restgpr1_", 14, 31, restgpr1, restgpr1_tail }, | |
7089 | { "_savefpr_", 14, 31, savefpr, savefpr0_tail }, | |
7090 | { "_restfpr_", 14, 29, restfpr, restfpr0_tail }, | |
7091 | { "_restfpr_", 30, 31, restfpr, restfpr0_tail }, | |
7092 | { "._savef", 14, 31, savefpr, savefpr1_tail }, | |
7093 | { "._restf", 14, 31, restfpr, restfpr1_tail }, | |
7094 | { "_savevr_", 20, 31, savevr, savevr_tail }, | |
7095 | { "_restvr_", 20, 31, restvr, restvr_tail } | |
7096 | }; | |
7097 | ||
e86ce104 | 7098 | /* Called near the start of bfd_elf_size_dynamic_sections. We use |
82bd7b59 AM |
7099 | this hook to a) provide some gcc support functions, and b) transfer |
7100 | dynamic linking information gathered so far on function code symbol | |
7101 | entries, to their corresponding function descriptor symbol entries. */ | |
deb0e272 | 7102 | |
b34976b6 | 7103 | static bfd_boolean |
4ce794b7 AM |
7104 | ppc64_elf_func_desc_adjust (bfd *obfd ATTRIBUTE_UNUSED, |
7105 | struct bfd_link_info *info) | |
e86ce104 AM |
7106 | { |
7107 | struct ppc_link_hash_table *htab; | |
7108 | ||
7109 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
7110 | if (htab == NULL) |
7111 | return FALSE; | |
7112 | ||
b32547cd AM |
7113 | /* Provide any missing _save* and _rest* functions. */ |
7114 | if (htab->sfpr != NULL) | |
7115 | { | |
7116 | unsigned int i; | |
7117 | ||
7118 | htab->sfpr->size = 0; | |
7119 | for (i = 0; i < ARRAY_SIZE (save_res_funcs); i++) | |
7120 | if (!sfpr_define (info, &save_res_funcs[i], NULL)) | |
7121 | return FALSE; | |
7122 | if (htab->sfpr->size == 0) | |
7123 | htab->sfpr->flags |= SEC_EXCLUDE; | |
7124 | } | |
7125 | ||
7126 | if (bfd_link_relocatable (info)) | |
7127 | return TRUE; | |
7128 | ||
7129 | if (htab->elf.hgot != NULL) | |
dba6fa9b AM |
7130 | { |
7131 | _bfd_elf_link_hash_hide_symbol (info, htab->elf.hgot, TRUE); | |
7132 | /* Make .TOC. defined so as to prevent it being made dynamic. | |
7133 | The wrong value here is fixed later in ppc64_elf_set_toc. */ | |
43417696 AM |
7134 | if (!htab->elf.hgot->def_regular |
7135 | || htab->elf.hgot->root.type != bfd_link_hash_defined) | |
7136 | { | |
7137 | htab->elf.hgot->root.type = bfd_link_hash_defined; | |
7138 | htab->elf.hgot->root.u.def.value = 0; | |
7139 | htab->elf.hgot->root.u.def.section = bfd_abs_section_ptr; | |
7140 | htab->elf.hgot->def_regular = 1; | |
7141 | htab->elf.hgot->root.linker_def = 1; | |
7142 | } | |
dba6fa9b | 7143 | htab->elf.hgot->type = STT_OBJECT; |
dba6fa9b AM |
7144 | htab->elf.hgot->other = ((htab->elf.hgot->other & ~ELF_ST_VISIBILITY (-1)) |
7145 | | STV_HIDDEN); | |
7146 | } | |
c66bb0ee | 7147 | |
4ce794b7 | 7148 | elf_link_hash_traverse (&htab->elf, func_desc_adjust, info); |
805fc799 | 7149 | |
b34976b6 | 7150 | return TRUE; |
e86ce104 AM |
7151 | } |
7152 | ||
8a2058b5 AM |
7153 | /* Return true if we have dynamic relocs against H that apply to |
7154 | read-only sections. */ | |
a345bc8d AM |
7155 | |
7156 | static bfd_boolean | |
7157 | readonly_dynrelocs (struct elf_link_hash_entry *h) | |
7158 | { | |
7159 | struct ppc_link_hash_entry *eh; | |
7160 | struct elf_dyn_relocs *p; | |
7161 | ||
7162 | eh = (struct ppc_link_hash_entry *) h; | |
7163 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
7164 | { | |
7165 | asection *s = p->sec->output_section; | |
7166 | ||
7167 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
7168 | return TRUE; | |
7169 | } | |
7170 | return FALSE; | |
7171 | } | |
7172 | ||
d311bc8b AM |
7173 | /* Return true if we have dynamic relocs against H or any of its weak |
7174 | aliases, that apply to read-only sections. */ | |
7175 | ||
7176 | static bfd_boolean | |
7177 | alias_readonly_dynrelocs (struct elf_link_hash_entry *h) | |
7178 | { | |
7179 | struct ppc_link_hash_entry *eh; | |
7180 | ||
7181 | eh = (struct ppc_link_hash_entry *) h; | |
7182 | do | |
7183 | { | |
7184 | if (readonly_dynrelocs (&eh->elf)) | |
7185 | return TRUE; | |
7186 | eh = eh->weakref; | |
7187 | } while (eh != NULL && &eh->elf != h); | |
7188 | ||
7189 | return FALSE; | |
7190 | } | |
8a2058b5 | 7191 | |
8a9e8e72 AM |
7192 | /* Return whether EH has pc-relative dynamic relocs. */ |
7193 | ||
7194 | static bfd_boolean | |
7195 | pc_dynrelocs (struct ppc_link_hash_entry *eh) | |
7196 | { | |
7197 | struct elf_dyn_relocs *p; | |
7198 | ||
7199 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
7200 | if (p->pc_count != 0) | |
7201 | return TRUE; | |
7202 | return FALSE; | |
7203 | } | |
7204 | ||
8a2058b5 AM |
7205 | /* Return true if a global entry stub will be created for H. Valid |
7206 | for ELFv2 before plt entries have been allocated. */ | |
7207 | ||
7208 | static bfd_boolean | |
7209 | global_entry_stub (struct elf_link_hash_entry *h) | |
7210 | { | |
7211 | struct plt_entry *pent; | |
7212 | ||
7213 | if (!h->pointer_equality_needed | |
7214 | || h->def_regular) | |
7215 | return FALSE; | |
7216 | ||
7217 | for (pent = h->plt.plist; pent != NULL; pent = pent->next) | |
7218 | if (pent->plt.refcount > 0 | |
7219 | && pent->addend == 0) | |
7220 | return TRUE; | |
7221 | ||
7222 | return FALSE; | |
7223 | } | |
7224 | ||
e86ce104 AM |
7225 | /* Adjust a symbol defined by a dynamic object and referenced by a |
7226 | regular object. The current definition is in some section of the | |
7227 | dynamic object, but we're not including those sections. We have to | |
7228 | change the definition to something the rest of the link can | |
7229 | understand. */ | |
7230 | ||
b34976b6 | 7231 | static bfd_boolean |
4ce794b7 AM |
7232 | ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info *info, |
7233 | struct elf_link_hash_entry *h) | |
e86ce104 AM |
7234 | { |
7235 | struct ppc_link_hash_table *htab; | |
e86ce104 | 7236 | asection *s; |
e86ce104 AM |
7237 | |
7238 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
7239 | if (htab == NULL) |
7240 | return FALSE; | |
e86ce104 AM |
7241 | |
7242 | /* Deal with function syms. */ | |
7243 | if (h->type == STT_FUNC | |
e054468f | 7244 | || h->type == STT_GNU_IFUNC |
f5385ebf | 7245 | || h->needs_plt) |
e86ce104 AM |
7246 | { |
7247 | /* Clear procedure linkage table information for any symbol that | |
7248 | won't need a .plt entry. */ | |
411e1bfb AM |
7249 | struct plt_entry *ent; |
7250 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) | |
7251 | if (ent->plt.refcount > 0) | |
7252 | break; | |
8387904d | 7253 | if (ent == NULL |
e054468f AM |
7254 | || (h->type != STT_GNU_IFUNC |
7255 | && (SYMBOL_CALLS_LOCAL (info, h) | |
7256 | || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
a4b6fadd AM |
7257 | && h->root.type == bfd_link_hash_undefweak))) |
7258 | || ((struct ppc_link_hash_entry *) h)->save_res) | |
40b8271b | 7259 | { |
411e1bfb | 7260 | h->plt.plist = NULL; |
f5385ebf | 7261 | h->needs_plt = 0; |
d1eca1e4 | 7262 | h->pointer_equality_needed = 0; |
40b8271b | 7263 | } |
8a2058b5 | 7264 | else if (abiversion (info->output_bfd) >= 2) |
a345bc8d | 7265 | { |
d1eca1e4 AM |
7266 | /* Taking a function's address in a read/write section |
7267 | doesn't require us to define the function symbol in the | |
7268 | executable on a global entry stub. A dynamic reloc can | |
8a2058b5 AM |
7269 | be used instead. The reason we prefer a few more dynamic |
7270 | relocs is that calling via a global entry stub costs a | |
7271 | few more instructions, and pointer_equality_needed causes | |
7272 | extra work in ld.so when resolving these symbols. */ | |
7273 | if (global_entry_stub (h) | |
d311bc8b | 7274 | && !alias_readonly_dynrelocs (h)) |
d1eca1e4 AM |
7275 | { |
7276 | h->pointer_equality_needed = 0; | |
8a2058b5 AM |
7277 | /* After adjust_dynamic_symbol, non_got_ref set in |
7278 | the non-pic case means that dyn_relocs for this | |
7279 | symbol should be discarded. */ | |
d1eca1e4 AM |
7280 | h->non_got_ref = 0; |
7281 | } | |
7282 | ||
a345bc8d AM |
7283 | /* If making a plt entry, then we don't need copy relocs. */ |
7284 | return TRUE; | |
7285 | } | |
5bd4f169 | 7286 | } |
bbd7ec4a | 7287 | else |
411e1bfb | 7288 | h->plt.plist = NULL; |
5bd4f169 AM |
7289 | |
7290 | /* If this is a weak symbol, and there is a real definition, the | |
7291 | processor independent code will have arranged for us to see the | |
7292 | real definition first, and we can just use the same value. */ | |
f6e332e6 | 7293 | if (h->u.weakdef != NULL) |
5bd4f169 | 7294 | { |
f6e332e6 AM |
7295 | BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined |
7296 | || h->u.weakdef->root.type == bfd_link_hash_defweak); | |
7297 | h->root.u.def.section = h->u.weakdef->root.u.def.section; | |
7298 | h->root.u.def.value = h->u.weakdef->root.u.def.value; | |
a23b6845 | 7299 | if (ELIMINATE_COPY_RELOCS) |
f6e332e6 | 7300 | h->non_got_ref = h->u.weakdef->non_got_ref; |
b34976b6 | 7301 | return TRUE; |
5bd4f169 AM |
7302 | } |
7303 | ||
5bd4f169 AM |
7304 | /* If we are creating a shared library, we must presume that the |
7305 | only references to the symbol are via the global offset table. | |
7306 | For such cases we need not do anything here; the relocations will | |
7307 | be handled correctly by relocate_section. */ | |
0e1862bb | 7308 | if (bfd_link_pic (info)) |
b34976b6 | 7309 | return TRUE; |
5bd4f169 | 7310 | |
65f38f15 AM |
7311 | /* If there are no references to this symbol that do not use the |
7312 | GOT, we don't need to generate a copy reloc. */ | |
f5385ebf | 7313 | if (!h->non_got_ref) |
b34976b6 | 7314 | return TRUE; |
65f38f15 | 7315 | |
b186458a | 7316 | /* Don't generate a copy reloc for symbols defined in the executable. */ |
d93d1c80 | 7317 | if (!h->def_dynamic || !h->ref_regular || h->def_regular |
b186458a | 7318 | |
d93d1c80 AM |
7319 | /* If -z nocopyreloc was given, don't generate them either. */ |
7320 | || info->nocopyreloc | |
a127494f | 7321 | |
d93d1c80 AM |
7322 | /* If we didn't find any dynamic relocs in read-only sections, then |
7323 | we'll be keeping the dynamic relocs and avoiding the copy reloc. */ | |
d311bc8b | 7324 | || (ELIMINATE_COPY_RELOCS && !alias_readonly_dynrelocs (h)) |
65f38f15 | 7325 | |
d93d1c80 AM |
7326 | /* Protected variables do not work with .dynbss. The copy in |
7327 | .dynbss won't be used by the shared library with the protected | |
7328 | definition for the variable. Text relocations are preferable | |
7329 | to an incorrect program. */ | |
7330 | || h->protected_def) | |
a127494f AM |
7331 | { |
7332 | h->non_got_ref = 0; | |
7333 | return TRUE; | |
7334 | } | |
7335 | ||
5d35169e | 7336 | if (h->plt.plist != NULL) |
97b639ba AM |
7337 | { |
7338 | /* We should never get here, but unfortunately there are versions | |
7339 | of gcc out there that improperly (for this ABI) put initialized | |
7340 | function pointers, vtable refs and suchlike in read-only | |
7341 | sections. Allow them to proceed, but warn that this might | |
7342 | break at runtime. */ | |
25f53a85 | 7343 | info->callbacks->einfo |
bc30df16 | 7344 | (_("%P: copy reloc against `%T' requires lazy plt linking; " |
25f53a85 | 7345 | "avoid setting LD_BIND_NOW=1 or upgrade gcc\n"), |
97b639ba AM |
7346 | h->root.root.string); |
7347 | } | |
5d35169e AM |
7348 | |
7349 | /* This is a reference to a symbol defined by a dynamic object which | |
7350 | is not a function. */ | |
7351 | ||
5bd4f169 AM |
7352 | /* We must allocate the symbol in our .dynbss section, which will |
7353 | become part of the .bss section of the executable. There will be | |
7354 | an entry for this symbol in the .dynsym section. The dynamic | |
7355 | object will contain position independent code, so all references | |
7356 | from the dynamic object to this symbol will go through the global | |
7357 | offset table. The dynamic linker will use the .dynsym entry to | |
7358 | determine the address it must put in the global offset table, so | |
7359 | both the dynamic object and the regular object will refer to the | |
7360 | same memory location for the variable. */ | |
5bd4f169 | 7361 | |
04c9666a AM |
7362 | /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker |
7363 | to copy the initial value out of the dynamic object and into the | |
5bd4f169 AM |
7364 | runtime process image. We need to remember the offset into the |
7365 | .rela.bss section we are going to use. */ | |
1d7e9d18 | 7366 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0) |
5bd4f169 | 7367 | { |
eea6121a | 7368 | htab->relbss->size += sizeof (Elf64_External_Rela); |
f5385ebf | 7369 | h->needs_copy = 1; |
5bd4f169 AM |
7370 | } |
7371 | ||
4ce794b7 | 7372 | s = htab->dynbss; |
5bd4f169 | 7373 | |
6cabe1ea | 7374 | return _bfd_elf_adjust_dynamic_copy (info, h, s); |
5bd4f169 AM |
7375 | } |
7376 | ||
e86ce104 AM |
7377 | /* If given a function descriptor symbol, hide both the function code |
7378 | sym and the descriptor. */ | |
7379 | static void | |
4ce794b7 AM |
7380 | ppc64_elf_hide_symbol (struct bfd_link_info *info, |
7381 | struct elf_link_hash_entry *h, | |
7382 | bfd_boolean force_local) | |
e86ce104 | 7383 | { |
34814b9f | 7384 | struct ppc_link_hash_entry *eh; |
e86ce104 AM |
7385 | _bfd_elf_link_hash_hide_symbol (info, h, force_local); |
7386 | ||
34814b9f AM |
7387 | eh = (struct ppc_link_hash_entry *) h; |
7388 | if (eh->is_func_descriptor) | |
e86ce104 | 7389 | { |
34814b9f | 7390 | struct ppc_link_hash_entry *fh = eh->oh; |
e86ce104 | 7391 | |
721956f4 | 7392 | if (fh == NULL) |
d1329ca3 AM |
7393 | { |
7394 | const char *p, *q; | |
b8ac2841 | 7395 | struct elf_link_hash_table *htab = elf_hash_table (info); |
d1329ca3 AM |
7396 | char save; |
7397 | ||
7398 | /* We aren't supposed to use alloca in BFD because on | |
7399 | systems which do not have alloca the version in libiberty | |
7400 | calls xmalloc, which might cause the program to crash | |
7401 | when it runs out of memory. This function doesn't have a | |
7402 | return status, so there's no way to gracefully return an | |
7403 | error. So cheat. We know that string[-1] can be safely | |
34814b9f AM |
7404 | accessed; It's either a string in an ELF string table, |
7405 | or allocated in an objalloc structure. */ | |
d1329ca3 | 7406 | |
34814b9f | 7407 | p = eh->elf.root.root.string - 1; |
d1329ca3 AM |
7408 | save = *p; |
7409 | *(char *) p = '.'; | |
34814b9f | 7410 | fh = (struct ppc_link_hash_entry *) |
b8ac2841 | 7411 | elf_link_hash_lookup (htab, p, FALSE, FALSE, FALSE); |
d1329ca3 AM |
7412 | *(char *) p = save; |
7413 | ||
7414 | /* Unfortunately, if it so happens that the string we were | |
7415 | looking for was allocated immediately before this string, | |
7416 | then we overwrote the string terminator. That's the only | |
7417 | reason the lookup should fail. */ | |
7418 | if (fh == NULL) | |
7419 | { | |
34814b9f AM |
7420 | q = eh->elf.root.root.string + strlen (eh->elf.root.root.string); |
7421 | while (q >= eh->elf.root.root.string && *q == *p) | |
d1329ca3 | 7422 | --q, --p; |
34814b9f AM |
7423 | if (q < eh->elf.root.root.string && *p == '.') |
7424 | fh = (struct ppc_link_hash_entry *) | |
b8ac2841 | 7425 | elf_link_hash_lookup (htab, p, FALSE, FALSE, FALSE); |
d1329ca3 AM |
7426 | } |
7427 | if (fh != NULL) | |
7428 | { | |
34814b9f AM |
7429 | eh->oh = fh; |
7430 | fh->oh = eh; | |
d1329ca3 AM |
7431 | } |
7432 | } | |
e86ce104 | 7433 | if (fh != NULL) |
34814b9f | 7434 | _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local); |
e86ce104 AM |
7435 | } |
7436 | } | |
7437 | ||
411e1bfb | 7438 | static bfd_boolean |
8843416a AM |
7439 | get_sym_h (struct elf_link_hash_entry **hp, |
7440 | Elf_Internal_Sym **symp, | |
7441 | asection **symsecp, | |
f961d9dd | 7442 | unsigned char **tls_maskp, |
8843416a AM |
7443 | Elf_Internal_Sym **locsymsp, |
7444 | unsigned long r_symndx, | |
7445 | bfd *ibfd) | |
411e1bfb | 7446 | { |
0ffa91dd | 7447 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd); |
411e1bfb AM |
7448 | |
7449 | if (r_symndx >= symtab_hdr->sh_info) | |
7450 | { | |
7451 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd); | |
7452 | struct elf_link_hash_entry *h; | |
7453 | ||
7454 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
b31867b6 | 7455 | h = elf_follow_link (h); |
411e1bfb AM |
7456 | |
7457 | if (hp != NULL) | |
7458 | *hp = h; | |
7459 | ||
7460 | if (symp != NULL) | |
7461 | *symp = NULL; | |
7462 | ||
7463 | if (symsecp != NULL) | |
7464 | { | |
7465 | asection *symsec = NULL; | |
7466 | if (h->root.type == bfd_link_hash_defined | |
7467 | || h->root.type == bfd_link_hash_defweak) | |
7468 | symsec = h->root.u.def.section; | |
7469 | *symsecp = symsec; | |
7470 | } | |
7471 | ||
e7b938ca | 7472 | if (tls_maskp != NULL) |
411e1bfb AM |
7473 | { |
7474 | struct ppc_link_hash_entry *eh; | |
7475 | ||
7476 | eh = (struct ppc_link_hash_entry *) h; | |
e7b938ca | 7477 | *tls_maskp = &eh->tls_mask; |
411e1bfb AM |
7478 | } |
7479 | } | |
7480 | else | |
7481 | { | |
7482 | Elf_Internal_Sym *sym; | |
7483 | Elf_Internal_Sym *locsyms = *locsymsp; | |
7484 | ||
7485 | if (locsyms == NULL) | |
7486 | { | |
7487 | locsyms = (Elf_Internal_Sym *) symtab_hdr->contents; | |
7488 | if (locsyms == NULL) | |
7489 | locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr, | |
7490 | symtab_hdr->sh_info, | |
7491 | 0, NULL, NULL, NULL); | |
7492 | if (locsyms == NULL) | |
7493 | return FALSE; | |
7494 | *locsymsp = locsyms; | |
7495 | } | |
7496 | sym = locsyms + r_symndx; | |
7497 | ||
7498 | if (hp != NULL) | |
7499 | *hp = NULL; | |
7500 | ||
7501 | if (symp != NULL) | |
7502 | *symp = sym; | |
7503 | ||
7504 | if (symsecp != NULL) | |
cb33740c | 7505 | *symsecp = bfd_section_from_elf_index (ibfd, sym->st_shndx); |
411e1bfb | 7506 | |
e7b938ca | 7507 | if (tls_maskp != NULL) |
411e1bfb AM |
7508 | { |
7509 | struct got_entry **lgot_ents; | |
f961d9dd | 7510 | unsigned char *tls_mask; |
411e1bfb | 7511 | |
e7b938ca | 7512 | tls_mask = NULL; |
411e1bfb AM |
7513 | lgot_ents = elf_local_got_ents (ibfd); |
7514 | if (lgot_ents != NULL) | |
7515 | { | |
e054468f AM |
7516 | struct plt_entry **local_plt = (struct plt_entry **) |
7517 | (lgot_ents + symtab_hdr->sh_info); | |
f961d9dd | 7518 | unsigned char *lgot_masks = (unsigned char *) |
e054468f | 7519 | (local_plt + symtab_hdr->sh_info); |
e7b938ca | 7520 | tls_mask = &lgot_masks[r_symndx]; |
411e1bfb | 7521 | } |
e7b938ca | 7522 | *tls_maskp = tls_mask; |
411e1bfb AM |
7523 | } |
7524 | } | |
7525 | return TRUE; | |
7526 | } | |
7527 | ||
e7b938ca | 7528 | /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on |
951fd09b | 7529 | error, 2 on a toc GD type suitable for optimization, 3 on a toc LD |
ad8e1ba5 | 7530 | type suitable for optimization, and 1 otherwise. */ |
951fd09b AM |
7531 | |
7532 | static int | |
f961d9dd | 7533 | get_tls_mask (unsigned char **tls_maskp, |
3a71aa26 AM |
7534 | unsigned long *toc_symndx, |
7535 | bfd_vma *toc_addend, | |
0d4792f7 | 7536 | Elf_Internal_Sym **locsymsp, |
3a71aa26 AM |
7537 | const Elf_Internal_Rela *rel, |
7538 | bfd *ibfd) | |
411e1bfb AM |
7539 | { |
7540 | unsigned long r_symndx; | |
0d4792f7 | 7541 | int next_r; |
411e1bfb AM |
7542 | struct elf_link_hash_entry *h; |
7543 | Elf_Internal_Sym *sym; | |
7544 | asection *sec; | |
7545 | bfd_vma off; | |
7546 | ||
7547 | r_symndx = ELF64_R_SYM (rel->r_info); | |
e7b938ca | 7548 | if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd)) |
951fd09b | 7549 | return 0; |
411e1bfb | 7550 | |
e7b938ca | 7551 | if ((*tls_maskp != NULL && **tls_maskp != 0) |
411e1bfb | 7552 | || sec == NULL |
6bee8834 | 7553 | || ppc64_elf_section_data (sec) == NULL |
7c8fe5c4 | 7554 | || ppc64_elf_section_data (sec)->sec_type != sec_toc) |
951fd09b | 7555 | return 1; |
411e1bfb AM |
7556 | |
7557 | /* Look inside a TOC section too. */ | |
7558 | if (h != NULL) | |
7559 | { | |
7560 | BFD_ASSERT (h->root.type == bfd_link_hash_defined); | |
7561 | off = h->root.u.def.value; | |
7562 | } | |
7563 | else | |
7564 | off = sym->st_value; | |
7565 | off += rel->r_addend; | |
7566 | BFD_ASSERT (off % 8 == 0); | |
3a71aa26 AM |
7567 | r_symndx = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8]; |
7568 | next_r = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8 + 1]; | |
0d4792f7 AM |
7569 | if (toc_symndx != NULL) |
7570 | *toc_symndx = r_symndx; | |
3a71aa26 AM |
7571 | if (toc_addend != NULL) |
7572 | *toc_addend = ppc64_elf_section_data (sec)->u.toc.add[off / 8]; | |
7573 | if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd)) | |
7574 | return 0; | |
854b41e7 | 7575 | if ((h == NULL || is_static_defined (h)) |
0d4792f7 AM |
7576 | && (next_r == -1 || next_r == -2)) |
7577 | return 1 - next_r; | |
951fd09b | 7578 | return 1; |
411e1bfb AM |
7579 | } |
7580 | ||
3b421ab3 AM |
7581 | /* Find (or create) an entry in the tocsave hash table. */ |
7582 | ||
7583 | static struct tocsave_entry * | |
7584 | tocsave_find (struct ppc_link_hash_table *htab, | |
7585 | enum insert_option insert, | |
7586 | Elf_Internal_Sym **local_syms, | |
7587 | const Elf_Internal_Rela *irela, | |
7588 | bfd *ibfd) | |
7589 | { | |
7590 | unsigned long r_indx; | |
7591 | struct elf_link_hash_entry *h; | |
7592 | Elf_Internal_Sym *sym; | |
7593 | struct tocsave_entry ent, *p; | |
7594 | hashval_t hash; | |
7595 | struct tocsave_entry **slot; | |
7596 | ||
7597 | r_indx = ELF64_R_SYM (irela->r_info); | |
7598 | if (!get_sym_h (&h, &sym, &ent.sec, NULL, local_syms, r_indx, ibfd)) | |
7599 | return NULL; | |
7600 | if (ent.sec == NULL || ent.sec->output_section == NULL) | |
7601 | { | |
4eca0228 | 7602 | _bfd_error_handler |
3b421ab3 AM |
7603 | (_("%B: undefined symbol on R_PPC64_TOCSAVE relocation")); |
7604 | return NULL; | |
7605 | } | |
7606 | ||
7607 | if (h != NULL) | |
7608 | ent.offset = h->root.u.def.value; | |
7609 | else | |
7610 | ent.offset = sym->st_value; | |
7611 | ent.offset += irela->r_addend; | |
7612 | ||
7613 | hash = tocsave_htab_hash (&ent); | |
7614 | slot = ((struct tocsave_entry **) | |
7615 | htab_find_slot_with_hash (htab->tocsave_htab, &ent, hash, insert)); | |
7616 | if (slot == NULL) | |
7617 | return NULL; | |
7618 | ||
7619 | if (*slot == NULL) | |
7620 | { | |
7621 | p = (struct tocsave_entry *) bfd_alloc (ibfd, sizeof (*p)); | |
7622 | if (p == NULL) | |
7623 | return NULL; | |
7624 | *p = ent; | |
7625 | *slot = p; | |
7626 | } | |
7627 | return *slot; | |
7628 | } | |
7629 | ||
754021d0 | 7630 | /* Adjust all global syms defined in opd sections. In gcc generated |
8387904d | 7631 | code for the old ABI, these will already have been done. */ |
754021d0 AM |
7632 | |
7633 | static bfd_boolean | |
7634 | adjust_opd_syms (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED) | |
7635 | { | |
7636 | struct ppc_link_hash_entry *eh; | |
7637 | asection *sym_sec; | |
74f0fb50 | 7638 | struct _opd_sec_data *opd; |
754021d0 AM |
7639 | |
7640 | if (h->root.type == bfd_link_hash_indirect) | |
7641 | return TRUE; | |
7642 | ||
754021d0 AM |
7643 | if (h->root.type != bfd_link_hash_defined |
7644 | && h->root.type != bfd_link_hash_defweak) | |
7645 | return TRUE; | |
7646 | ||
7647 | eh = (struct ppc_link_hash_entry *) h; | |
7648 | if (eh->adjust_done) | |
7649 | return TRUE; | |
7650 | ||
7651 | sym_sec = eh->elf.root.u.def.section; | |
74f0fb50 AM |
7652 | opd = get_opd_info (sym_sec); |
7653 | if (opd != NULL && opd->adjust != NULL) | |
754021d0 | 7654 | { |
51aecdc5 | 7655 | long adjust = opd->adjust[OPD_NDX (eh->elf.root.u.def.value)]; |
4025353c AM |
7656 | if (adjust == -1) |
7657 | { | |
7658 | /* This entry has been deleted. */ | |
b3fac117 | 7659 | asection *dsec = ppc64_elf_tdata (sym_sec->owner)->deleted_section; |
81688140 AM |
7660 | if (dsec == NULL) |
7661 | { | |
7662 | for (dsec = sym_sec->owner->sections; dsec; dsec = dsec->next) | |
dbaa2011 | 7663 | if (discarded_section (dsec)) |
81688140 | 7664 | { |
b3fac117 | 7665 | ppc64_elf_tdata (sym_sec->owner)->deleted_section = dsec; |
81688140 AM |
7666 | break; |
7667 | } | |
7668 | } | |
4025353c | 7669 | eh->elf.root.u.def.value = 0; |
81688140 | 7670 | eh->elf.root.u.def.section = dsec; |
4025353c AM |
7671 | } |
7672 | else | |
7673 | eh->elf.root.u.def.value += adjust; | |
754021d0 AM |
7674 | eh->adjust_done = 1; |
7675 | } | |
7676 | return TRUE; | |
7677 | } | |
7678 | ||
8c1d1bb8 | 7679 | /* Handles decrementing dynamic reloc counts for the reloc specified by |
19e08130 | 7680 | R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM |
8c1d1bb8 AM |
7681 | have already been determined. */ |
7682 | ||
7683 | static bfd_boolean | |
7684 | dec_dynrel_count (bfd_vma r_info, | |
7685 | asection *sec, | |
7686 | struct bfd_link_info *info, | |
7687 | Elf_Internal_Sym **local_syms, | |
7688 | struct elf_link_hash_entry *h, | |
19e08130 | 7689 | Elf_Internal_Sym *sym) |
8c1d1bb8 AM |
7690 | { |
7691 | enum elf_ppc64_reloc_type r_type; | |
19e08130 | 7692 | asection *sym_sec = NULL; |
8c1d1bb8 AM |
7693 | |
7694 | /* Can this reloc be dynamic? This switch, and later tests here | |
7695 | should be kept in sync with the code in check_relocs. */ | |
7696 | r_type = ELF64_R_TYPE (r_info); | |
7697 | switch (r_type) | |
7698 | { | |
7699 | default: | |
7700 | return TRUE; | |
7701 | ||
7702 | case R_PPC64_TPREL16: | |
7703 | case R_PPC64_TPREL16_LO: | |
7704 | case R_PPC64_TPREL16_HI: | |
7705 | case R_PPC64_TPREL16_HA: | |
7706 | case R_PPC64_TPREL16_DS: | |
7707 | case R_PPC64_TPREL16_LO_DS: | |
f9c6b907 AM |
7708 | case R_PPC64_TPREL16_HIGH: |
7709 | case R_PPC64_TPREL16_HIGHA: | |
8c1d1bb8 AM |
7710 | case R_PPC64_TPREL16_HIGHER: |
7711 | case R_PPC64_TPREL16_HIGHERA: | |
7712 | case R_PPC64_TPREL16_HIGHEST: | |
7713 | case R_PPC64_TPREL16_HIGHESTA: | |
0e1862bb | 7714 | if (!bfd_link_pic (info)) |
8c1d1bb8 AM |
7715 | return TRUE; |
7716 | ||
7717 | case R_PPC64_TPREL64: | |
7718 | case R_PPC64_DTPMOD64: | |
7719 | case R_PPC64_DTPREL64: | |
7720 | case R_PPC64_ADDR64: | |
7721 | case R_PPC64_REL30: | |
7722 | case R_PPC64_REL32: | |
7723 | case R_PPC64_REL64: | |
7724 | case R_PPC64_ADDR14: | |
7725 | case R_PPC64_ADDR14_BRNTAKEN: | |
7726 | case R_PPC64_ADDR14_BRTAKEN: | |
7727 | case R_PPC64_ADDR16: | |
7728 | case R_PPC64_ADDR16_DS: | |
7729 | case R_PPC64_ADDR16_HA: | |
7730 | case R_PPC64_ADDR16_HI: | |
f9c6b907 AM |
7731 | case R_PPC64_ADDR16_HIGH: |
7732 | case R_PPC64_ADDR16_HIGHA: | |
8c1d1bb8 AM |
7733 | case R_PPC64_ADDR16_HIGHER: |
7734 | case R_PPC64_ADDR16_HIGHERA: | |
7735 | case R_PPC64_ADDR16_HIGHEST: | |
7736 | case R_PPC64_ADDR16_HIGHESTA: | |
7737 | case R_PPC64_ADDR16_LO: | |
7738 | case R_PPC64_ADDR16_LO_DS: | |
7739 | case R_PPC64_ADDR24: | |
7740 | case R_PPC64_ADDR32: | |
7741 | case R_PPC64_UADDR16: | |
7742 | case R_PPC64_UADDR32: | |
7743 | case R_PPC64_UADDR64: | |
7744 | case R_PPC64_TOC: | |
7745 | break; | |
7746 | } | |
7747 | ||
7748 | if (local_syms != NULL) | |
7749 | { | |
7750 | unsigned long r_symndx; | |
8c1d1bb8 AM |
7751 | bfd *ibfd = sec->owner; |
7752 | ||
7753 | r_symndx = ELF64_R_SYM (r_info); | |
7754 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, local_syms, r_symndx, ibfd)) | |
7755 | return FALSE; | |
7756 | } | |
7757 | ||
0e1862bb | 7758 | if ((bfd_link_pic (info) |
1d483afe | 7759 | && (must_be_dyn_reloc (info, r_type) |
8c1d1bb8 | 7760 | || (h != NULL |
198f1157 | 7761 | && (!SYMBOLIC_BIND (info, h) |
8c1d1bb8 AM |
7762 | || h->root.type == bfd_link_hash_defweak |
7763 | || !h->def_regular)))) | |
7764 | || (ELIMINATE_COPY_RELOCS | |
0e1862bb | 7765 | && !bfd_link_pic (info) |
8c1d1bb8 AM |
7766 | && h != NULL |
7767 | && (h->root.type == bfd_link_hash_defweak | |
7768 | || !h->def_regular))) | |
7769 | ; | |
7770 | else | |
7771 | return TRUE; | |
7772 | ||
7773 | if (h != NULL) | |
6edfbbad | 7774 | { |
19e08130 AM |
7775 | struct elf_dyn_relocs *p; |
7776 | struct elf_dyn_relocs **pp; | |
7777 | pp = &((struct ppc_link_hash_entry *) h)->dyn_relocs; | |
7778 | ||
7779 | /* elf_gc_sweep may have already removed all dyn relocs associated | |
7780 | with local syms for a given section. Also, symbol flags are | |
7781 | changed by elf_gc_sweep_symbol, confusing the test above. Don't | |
7782 | report a dynreloc miscount. */ | |
7783 | if (*pp == NULL && info->gc_sections) | |
7784 | return TRUE; | |
7785 | ||
7786 | while ((p = *pp) != NULL) | |
60124e18 | 7787 | { |
19e08130 AM |
7788 | if (p->sec == sec) |
7789 | { | |
7790 | if (!must_be_dyn_reloc (info, r_type)) | |
7791 | p->pc_count -= 1; | |
7792 | p->count -= 1; | |
7793 | if (p->count == 0) | |
7794 | *pp = p->next; | |
7795 | return TRUE; | |
7796 | } | |
7797 | pp = &p->next; | |
60124e18 | 7798 | } |
6edfbbad | 7799 | } |
19e08130 AM |
7800 | else |
7801 | { | |
7802 | struct ppc_dyn_relocs *p; | |
7803 | struct ppc_dyn_relocs **pp; | |
7804 | void *vpp; | |
7805 | bfd_boolean is_ifunc; | |
8c1d1bb8 | 7806 | |
19e08130 AM |
7807 | if (local_syms == NULL) |
7808 | sym_sec = bfd_section_from_elf_index (sec->owner, sym->st_shndx); | |
7809 | if (sym_sec == NULL) | |
7810 | sym_sec = sec; | |
c57da1a7 | 7811 | |
19e08130 AM |
7812 | vpp = &elf_section_data (sym_sec)->local_dynrel; |
7813 | pp = (struct ppc_dyn_relocs **) vpp; | |
7814 | ||
7815 | if (*pp == NULL && info->gc_sections) | |
7816 | return TRUE; | |
7817 | ||
7818 | is_ifunc = ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC; | |
7819 | while ((p = *pp) != NULL) | |
8c1d1bb8 | 7820 | { |
19e08130 AM |
7821 | if (p->sec == sec && p->ifunc == is_ifunc) |
7822 | { | |
7823 | p->count -= 1; | |
7824 | if (p->count == 0) | |
7825 | *pp = p->next; | |
7826 | return TRUE; | |
7827 | } | |
7828 | pp = &p->next; | |
8c1d1bb8 | 7829 | } |
8c1d1bb8 AM |
7830 | } |
7831 | ||
695344c0 | 7832 | /* xgettext:c-format */ |
8de848d8 | 7833 | info->callbacks->einfo (_("%P: dynreloc miscount for %B, section %A\n"), |
25f53a85 | 7834 | sec->owner, sec); |
8c1d1bb8 AM |
7835 | bfd_set_error (bfd_error_bad_value); |
7836 | return FALSE; | |
7837 | } | |
7838 | ||
754021d0 AM |
7839 | /* Remove unused Official Procedure Descriptor entries. Currently we |
7840 | only remove those associated with functions in discarded link-once | |
7841 | sections, or weakly defined functions that have been overridden. It | |
7842 | would be possible to remove many more entries for statically linked | |
7843 | applications. */ | |
7844 | ||
b34976b6 | 7845 | bfd_boolean |
e7d1c40c | 7846 | ppc64_elf_edit_opd (struct bfd_link_info *info) |
1e2f5b6e AM |
7847 | { |
7848 | bfd *ibfd; | |
754021d0 | 7849 | bfd_boolean some_edited = FALSE; |
3f764659 | 7850 | asection *need_pad = NULL; |
e7d1c40c AM |
7851 | struct ppc_link_hash_table *htab; |
7852 | ||
7853 | htab = ppc_hash_table (info); | |
7854 | if (htab == NULL) | |
7855 | return FALSE; | |
1e2f5b6e | 7856 | |
c72f2fb2 | 7857 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
1e2f5b6e AM |
7858 | { |
7859 | asection *sec; | |
7860 | Elf_Internal_Rela *relstart, *rel, *relend; | |
7861 | Elf_Internal_Shdr *symtab_hdr; | |
6cdc0ccc | 7862 | Elf_Internal_Sym *local_syms; |
74f0fb50 | 7863 | struct _opd_sec_data *opd; |
51aecdc5 | 7864 | bfd_boolean need_edit, add_aux_fields, broken; |
3f764659 | 7865 | bfd_size_type cnt_16b = 0; |
1e2f5b6e | 7866 | |
854b41e7 AM |
7867 | if (!is_ppc64_elf (ibfd)) |
7868 | continue; | |
7869 | ||
1e2f5b6e | 7870 | sec = bfd_get_section_by_name (ibfd, ".opd"); |
46de2a7c | 7871 | if (sec == NULL || sec->size == 0) |
1e2f5b6e AM |
7872 | continue; |
7873 | ||
dbaa2011 | 7874 | if (sec->sec_info_type == SEC_INFO_TYPE_JUST_SYMS) |
4b85d634 AM |
7875 | continue; |
7876 | ||
1e2f5b6e AM |
7877 | if (sec->output_section == bfd_abs_section_ptr) |
7878 | continue; | |
7879 | ||
7880 | /* Look through the section relocs. */ | |
7881 | if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0) | |
7882 | continue; | |
7883 | ||
6cdc0ccc | 7884 | local_syms = NULL; |
0ffa91dd | 7885 | symtab_hdr = &elf_symtab_hdr (ibfd); |
1e2f5b6e AM |
7886 | |
7887 | /* Read the relocations. */ | |
4ce794b7 | 7888 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, |
45d6a902 | 7889 | info->keep_memory); |
1e2f5b6e | 7890 | if (relstart == NULL) |
b34976b6 | 7891 | return FALSE; |
1e2f5b6e AM |
7892 | |
7893 | /* First run through the relocs to check they are sane, and to | |
7894 | determine whether we need to edit this opd section. */ | |
b34976b6 | 7895 | need_edit = FALSE; |
51aecdc5 | 7896 | broken = FALSE; |
3f764659 | 7897 | need_pad = sec; |
1e2f5b6e | 7898 | relend = relstart + sec->reloc_count; |
50bc7936 | 7899 | for (rel = relstart; rel < relend; ) |
1e2f5b6e | 7900 | { |
04c9666a | 7901 | enum elf_ppc64_reloc_type r_type; |
1e2f5b6e AM |
7902 | unsigned long r_symndx; |
7903 | asection *sym_sec; | |
7904 | struct elf_link_hash_entry *h; | |
7905 | Elf_Internal_Sym *sym; | |
51aecdc5 | 7906 | bfd_vma offset; |
1e2f5b6e | 7907 | |
51aecdc5 | 7908 | /* .opd contains an array of 16 or 24 byte entries. We're |
1e2f5b6e AM |
7909 | only interested in the reloc pointing to a function entry |
7910 | point. */ | |
51aecdc5 AM |
7911 | offset = rel->r_offset; |
7912 | if (rel + 1 == relend | |
7913 | || rel[1].r_offset != offset + 8) | |
1e2f5b6e AM |
7914 | { |
7915 | /* If someone messes with .opd alignment then after a | |
7916 | "ld -r" we might have padding in the middle of .opd. | |
7917 | Also, there's nothing to prevent someone putting | |
7918 | something silly in .opd with the assembler. No .opd | |
b34976b6 | 7919 | optimization for them! */ |
3f764659 | 7920 | broken_opd: |
4eca0228 | 7921 | _bfd_error_handler |
d003868e | 7922 | (_("%B: .opd is not a regular array of opd entries"), ibfd); |
51aecdc5 | 7923 | broken = TRUE; |
1e2f5b6e AM |
7924 | break; |
7925 | } | |
7926 | ||
50bc7936 AM |
7927 | if ((r_type = ELF64_R_TYPE (rel->r_info)) != R_PPC64_ADDR64 |
7928 | || (r_type = ELF64_R_TYPE ((rel + 1)->r_info)) != R_PPC64_TOC) | |
7929 | { | |
4eca0228 | 7930 | _bfd_error_handler |
695344c0 | 7931 | /* xgettext:c-format */ |
d003868e AM |
7932 | (_("%B: unexpected reloc type %u in .opd section"), |
7933 | ibfd, r_type); | |
51aecdc5 | 7934 | broken = TRUE; |
50bc7936 AM |
7935 | break; |
7936 | } | |
7937 | ||
1e2f5b6e | 7938 | r_symndx = ELF64_R_SYM (rel->r_info); |
411e1bfb AM |
7939 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, |
7940 | r_symndx, ibfd)) | |
50bc7936 | 7941 | goto error_ret; |
1e2f5b6e AM |
7942 | |
7943 | if (sym_sec == NULL || sym_sec->owner == NULL) | |
7944 | { | |
411e1bfb AM |
7945 | const char *sym_name; |
7946 | if (h != NULL) | |
7947 | sym_name = h->root.root.string; | |
7948 | else | |
26c61ae5 L |
7949 | sym_name = bfd_elf_sym_name (ibfd, symtab_hdr, sym, |
7950 | sym_sec); | |
411e1bfb | 7951 | |
4eca0228 | 7952 | _bfd_error_handler |
695344c0 | 7953 | /* xgettext:c-format */ |
d003868e AM |
7954 | (_("%B: undefined sym `%s' in .opd section"), |
7955 | ibfd, sym_name); | |
51aecdc5 | 7956 | broken = TRUE; |
1e2f5b6e AM |
7957 | break; |
7958 | } | |
7959 | ||
51020317 AM |
7960 | /* opd entries are always for functions defined in the |
7961 | current input bfd. If the symbol isn't defined in the | |
7962 | input bfd, then we won't be using the function in this | |
7963 | bfd; It must be defined in a linkonce section in another | |
7964 | bfd, or is weak. It's also possible that we are | |
7965 | discarding the function due to a linker script /DISCARD/, | |
7966 | which we test for via the output_section. */ | |
7967 | if (sym_sec->owner != ibfd | |
7968 | || sym_sec->output_section == bfd_abs_section_ptr) | |
b34976b6 | 7969 | need_edit = TRUE; |
1e2f5b6e | 7970 | |
50bc7936 | 7971 | rel += 2; |
51aecdc5 AM |
7972 | if (rel + 1 == relend |
7973 | || (rel + 2 < relend | |
7974 | && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_TOC)) | |
7975 | ++rel; | |
7976 | ||
7977 | if (rel == relend) | |
3f764659 JJ |
7978 | { |
7979 | if (sec->size == offset + 24) | |
7980 | { | |
7981 | need_pad = NULL; | |
7982 | break; | |
7983 | } | |
51aecdc5 | 7984 | if (sec->size == offset + 16) |
3f764659 JJ |
7985 | { |
7986 | cnt_16b++; | |
7987 | break; | |
7988 | } | |
7989 | goto broken_opd; | |
7990 | } | |
3f764659 JJ |
7991 | else if (rel + 1 < relend |
7992 | && ELF64_R_TYPE (rel[0].r_info) == R_PPC64_ADDR64 | |
7993 | && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOC) | |
7994 | { | |
51aecdc5 AM |
7995 | if (rel[0].r_offset == offset + 16) |
7996 | cnt_16b++; | |
7997 | else if (rel[0].r_offset != offset + 24) | |
7998 | goto broken_opd; | |
3f764659 JJ |
7999 | } |
8000 | else | |
8001 | goto broken_opd; | |
1e2f5b6e AM |
8002 | } |
8003 | ||
e7d1c40c | 8004 | add_aux_fields = htab->params->non_overlapping_opd && cnt_16b > 0; |
3f764659 | 8005 | |
51aecdc5 | 8006 | if (!broken && (need_edit || add_aux_fields)) |
1e2f5b6e AM |
8007 | { |
8008 | Elf_Internal_Rela *write_rel; | |
d4730f92 | 8009 | Elf_Internal_Shdr *rel_hdr; |
1e2f5b6e | 8010 | bfd_byte *rptr, *wptr; |
983bddc8 | 8011 | bfd_byte *new_contents; |
74f0fb50 AM |
8012 | bfd_size_type amt; |
8013 | ||
983bddc8 | 8014 | new_contents = NULL; |
51aecdc5 | 8015 | amt = OPD_NDX (sec->size) * sizeof (long); |
74f0fb50 | 8016 | opd = &ppc64_elf_section_data (sec)->u.opd; |
33c0ec9d | 8017 | opd->adjust = bfd_zalloc (sec->owner, amt); |
74f0fb50 AM |
8018 | if (opd->adjust == NULL) |
8019 | return FALSE; | |
8020 | ppc64_elf_section_data (sec)->sec_type = sec_opd; | |
1e2f5b6e AM |
8021 | |
8022 | /* This seems a waste of time as input .opd sections are all | |
8023 | zeros as generated by gcc, but I suppose there's no reason | |
8024 | this will always be so. We might start putting something in | |
8025 | the third word of .opd entries. */ | |
8026 | if ((sec->flags & SEC_IN_MEMORY) == 0) | |
8027 | { | |
eea6121a AM |
8028 | bfd_byte *loc; |
8029 | if (!bfd_malloc_and_get_section (ibfd, sec, &loc)) | |
6cdc0ccc | 8030 | { |
eea6121a AM |
8031 | if (loc != NULL) |
8032 | free (loc); | |
50bc7936 | 8033 | error_ret: |
6cdc0ccc AM |
8034 | if (local_syms != NULL |
8035 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
8036 | free (local_syms); | |
6cdc0ccc AM |
8037 | if (elf_section_data (sec)->relocs != relstart) |
8038 | free (relstart); | |
b34976b6 | 8039 | return FALSE; |
6cdc0ccc | 8040 | } |
1e2f5b6e AM |
8041 | sec->contents = loc; |
8042 | sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS); | |
8043 | } | |
8044 | ||
8045 | elf_section_data (sec)->relocs = relstart; | |
8046 | ||
3f764659 | 8047 | new_contents = sec->contents; |
3f764659 JJ |
8048 | if (add_aux_fields) |
8049 | { | |
8050 | new_contents = bfd_malloc (sec->size + cnt_16b * 8); | |
8051 | if (new_contents == NULL) | |
8052 | return FALSE; | |
51aecdc5 | 8053 | need_pad = NULL; |
3f764659 | 8054 | } |
b4f4e59f AM |
8055 | wptr = new_contents; |
8056 | rptr = sec->contents; | |
1e2f5b6e | 8057 | write_rel = relstart; |
51aecdc5 | 8058 | for (rel = relstart; rel < relend; ) |
1e2f5b6e | 8059 | { |
50bc7936 AM |
8060 | unsigned long r_symndx; |
8061 | asection *sym_sec; | |
8062 | struct elf_link_hash_entry *h; | |
51aecdc5 | 8063 | struct ppc_link_hash_entry *fdh = NULL; |
50bc7936 | 8064 | Elf_Internal_Sym *sym; |
51aecdc5 AM |
8065 | long opd_ent_size; |
8066 | Elf_Internal_Rela *next_rel; | |
8067 | bfd_boolean skip; | |
50bc7936 AM |
8068 | |
8069 | r_symndx = ELF64_R_SYM (rel->r_info); | |
8070 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
d37c89e5 | 8071 | r_symndx, ibfd)) |
50bc7936 AM |
8072 | goto error_ret; |
8073 | ||
51aecdc5 AM |
8074 | next_rel = rel + 2; |
8075 | if (next_rel + 1 == relend | |
8076 | || (next_rel + 2 < relend | |
8077 | && ELF64_R_TYPE (next_rel[2].r_info) == R_PPC64_TOC)) | |
8078 | ++next_rel; | |
8079 | ||
8080 | /* See if the .opd entry is full 24 byte or | |
8081 | 16 byte (with fd_aux entry overlapped with next | |
8082 | fd_func). */ | |
8083 | opd_ent_size = 24; | |
8084 | if (next_rel == relend) | |
1e2f5b6e | 8085 | { |
51aecdc5 | 8086 | if (sec->size == rel->r_offset + 16) |
3f764659 | 8087 | opd_ent_size = 16; |
51aecdc5 AM |
8088 | } |
8089 | else if (next_rel->r_offset == rel->r_offset + 16) | |
8090 | opd_ent_size = 16; | |
3f764659 | 8091 | |
51aecdc5 AM |
8092 | if (h != NULL |
8093 | && h->root.root.string[0] == '.') | |
8094 | { | |
8095 | fdh = lookup_fdh ((struct ppc_link_hash_entry *) h, htab); | |
8096 | if (fdh != NULL | |
8097 | && fdh->elf.root.type != bfd_link_hash_defined | |
8098 | && fdh->elf.root.type != bfd_link_hash_defweak) | |
8099 | fdh = NULL; | |
8100 | } | |
1e2f5b6e | 8101 | |
51aecdc5 AM |
8102 | skip = (sym_sec->owner != ibfd |
8103 | || sym_sec->output_section == bfd_abs_section_ptr); | |
8104 | if (skip) | |
8105 | { | |
8106 | if (fdh != NULL && sym_sec->owner == ibfd) | |
a4aa0fb7 | 8107 | { |
51aecdc5 AM |
8108 | /* Arrange for the function descriptor sym |
8109 | to be dropped. */ | |
8110 | fdh->elf.root.u.def.value = 0; | |
8111 | fdh->elf.root.u.def.section = sym_sec; | |
a4aa0fb7 | 8112 | } |
51aecdc5 | 8113 | opd->adjust[OPD_NDX (rel->r_offset)] = -1; |
1e2f5b6e | 8114 | |
0e1862bb | 8115 | if (NO_OPD_RELOCS || bfd_link_relocatable (info)) |
51aecdc5 AM |
8116 | rel = next_rel; |
8117 | else | |
8118 | while (1) | |
8119 | { | |
8120 | if (!dec_dynrel_count (rel->r_info, sec, info, | |
8121 | NULL, h, sym)) | |
8122 | goto error_ret; | |
754021d0 | 8123 | |
51aecdc5 AM |
8124 | if (++rel == next_rel) |
8125 | break; | |
1e2f5b6e | 8126 | |
51aecdc5 AM |
8127 | r_symndx = ELF64_R_SYM (rel->r_info); |
8128 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
8129 | r_symndx, ibfd)) | |
8130 | goto error_ret; | |
8131 | } | |
50bc7936 AM |
8132 | } |
8133 | else | |
1e2f5b6e | 8134 | { |
51aecdc5 AM |
8135 | /* We'll be keeping this opd entry. */ |
8136 | long adjust; | |
8137 | ||
8138 | if (fdh != NULL) | |
8139 | { | |
8140 | /* Redefine the function descriptor symbol to | |
8141 | this location in the opd section. It is | |
8142 | necessary to update the value here rather | |
8143 | than using an array of adjustments as we do | |
8144 | for local symbols, because various places | |
8145 | in the generic ELF code use the value | |
8146 | stored in u.def.value. */ | |
8147 | fdh->elf.root.u.def.value = wptr - new_contents; | |
8148 | fdh->adjust_done = 1; | |
8149 | } | |
8150 | ||
8151 | /* Local syms are a bit tricky. We could | |
8152 | tweak them as they can be cached, but | |
8153 | we'd need to look through the local syms | |
8154 | for the function descriptor sym which we | |
8155 | don't have at the moment. So keep an | |
8156 | array of adjustments. */ | |
8157 | adjust = (wptr - new_contents) - (rptr - sec->contents); | |
8158 | opd->adjust[OPD_NDX (rel->r_offset)] = adjust; | |
8159 | ||
8160 | if (wptr != rptr) | |
8161 | memcpy (wptr, rptr, opd_ent_size); | |
8162 | wptr += opd_ent_size; | |
8163 | if (add_aux_fields && opd_ent_size == 16) | |
8164 | { | |
8165 | memset (wptr, '\0', 8); | |
8166 | wptr += 8; | |
8167 | } | |
8168 | ||
50bc7936 | 8169 | /* We need to adjust any reloc offsets to point to the |
51aecdc5 AM |
8170 | new opd entries. */ |
8171 | for ( ; rel != next_rel; ++rel) | |
8172 | { | |
8173 | rel->r_offset += adjust; | |
8174 | if (write_rel != rel) | |
8175 | memcpy (write_rel, rel, sizeof (*rel)); | |
8176 | ++write_rel; | |
8177 | } | |
1e2f5b6e | 8178 | } |
51aecdc5 AM |
8179 | |
8180 | rptr += opd_ent_size; | |
1e2f5b6e AM |
8181 | } |
8182 | ||
3f764659 | 8183 | sec->size = wptr - new_contents; |
1e2f5b6e | 8184 | sec->reloc_count = write_rel - relstart; |
3f764659 JJ |
8185 | if (add_aux_fields) |
8186 | { | |
8187 | free (sec->contents); | |
8188 | sec->contents = new_contents; | |
8189 | } | |
8190 | ||
05bf9422 | 8191 | /* Fudge the header size too, as this is used later in |
cdcf6e38 | 8192 | elf_bfd_final_link if we are emitting relocs. */ |
d4730f92 BS |
8193 | rel_hdr = _bfd_elf_single_rel_hdr (sec); |
8194 | rel_hdr->sh_size = sec->reloc_count * rel_hdr->sh_entsize; | |
754021d0 | 8195 | some_edited = TRUE; |
1e2f5b6e | 8196 | } |
6cdc0ccc | 8197 | else if (elf_section_data (sec)->relocs != relstart) |
1e2f5b6e | 8198 | free (relstart); |
6cdc0ccc | 8199 | |
411e1bfb AM |
8200 | if (local_syms != NULL |
8201 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
8202 | { | |
8203 | if (!info->keep_memory) | |
8204 | free (local_syms); | |
8205 | else | |
8206 | symtab_hdr->contents = (unsigned char *) local_syms; | |
8207 | } | |
8208 | } | |
8209 | ||
754021d0 AM |
8210 | if (some_edited) |
8211 | elf_link_hash_traverse (elf_hash_table (info), adjust_opd_syms, NULL); | |
8212 | ||
3f764659 JJ |
8213 | /* If we are doing a final link and the last .opd entry is just 16 byte |
8214 | long, add a 8 byte padding after it. */ | |
0e1862bb | 8215 | if (need_pad != NULL && !bfd_link_relocatable (info)) |
3f764659 JJ |
8216 | { |
8217 | bfd_byte *p; | |
8218 | ||
8219 | if ((need_pad->flags & SEC_IN_MEMORY) == 0) | |
8220 | { | |
8221 | BFD_ASSERT (need_pad->size > 0); | |
8222 | ||
8223 | p = bfd_malloc (need_pad->size + 8); | |
8224 | if (p == NULL) | |
8225 | return FALSE; | |
699733f6 | 8226 | |
3f764659 JJ |
8227 | if (! bfd_get_section_contents (need_pad->owner, need_pad, |
8228 | p, 0, need_pad->size)) | |
8229 | return FALSE; | |
8230 | ||
8231 | need_pad->contents = p; | |
8232 | need_pad->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS); | |
8233 | } | |
8234 | else | |
8235 | { | |
8236 | p = bfd_realloc (need_pad->contents, need_pad->size + 8); | |
8237 | if (p == NULL) | |
8238 | return FALSE; | |
8239 | ||
8240 | need_pad->contents = p; | |
8241 | } | |
8242 | ||
8243 | memset (need_pad->contents + need_pad->size, 0, 8); | |
8244 | need_pad->size += 8; | |
8245 | } | |
8246 | ||
411e1bfb AM |
8247 | return TRUE; |
8248 | } | |
8249 | ||
e1918d23 | 8250 | /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */ |
411e1bfb | 8251 | |
e1918d23 | 8252 | asection * |
e7d1c40c | 8253 | ppc64_elf_tls_setup (struct bfd_link_info *info) |
411e1bfb | 8254 | { |
411e1bfb AM |
8255 | struct ppc_link_hash_table *htab; |
8256 | ||
411e1bfb | 8257 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
8258 | if (htab == NULL) |
8259 | return NULL; | |
8260 | ||
ee67d69a AM |
8261 | if (abiversion (info->output_bfd) == 1) |
8262 | htab->opd_abi = 1; | |
8263 | ||
e7d1c40c | 8264 | if (htab->params->no_multi_toc) |
33c0ec9d AM |
8265 | htab->do_multi_toc = 0; |
8266 | else if (!htab->do_multi_toc) | |
e7d1c40c | 8267 | htab->params->no_multi_toc = 1; |
33c0ec9d | 8268 | |
3a71aa26 AM |
8269 | htab->tls_get_addr = ((struct ppc_link_hash_entry *) |
8270 | elf_link_hash_lookup (&htab->elf, ".__tls_get_addr", | |
8271 | FALSE, FALSE, TRUE)); | |
a7f2871e AM |
8272 | /* Move dynamic linking info to the function descriptor sym. */ |
8273 | if (htab->tls_get_addr != NULL) | |
8274 | func_desc_adjust (&htab->tls_get_addr->elf, info); | |
3a71aa26 AM |
8275 | htab->tls_get_addr_fd = ((struct ppc_link_hash_entry *) |
8276 | elf_link_hash_lookup (&htab->elf, "__tls_get_addr", | |
8277 | FALSE, FALSE, TRUE)); | |
7c9cf415 | 8278 | if (htab->params->tls_get_addr_opt) |
a7f2871e AM |
8279 | { |
8280 | struct elf_link_hash_entry *opt, *opt_fd, *tga, *tga_fd; | |
8281 | ||
8282 | opt = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr_opt", | |
8283 | FALSE, FALSE, TRUE); | |
8284 | if (opt != NULL) | |
8285 | func_desc_adjust (opt, info); | |
8286 | opt_fd = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt", | |
8287 | FALSE, FALSE, TRUE); | |
8288 | if (opt_fd != NULL | |
8289 | && (opt_fd->root.type == bfd_link_hash_defined | |
8290 | || opt_fd->root.type == bfd_link_hash_defweak)) | |
8291 | { | |
8292 | /* If glibc supports an optimized __tls_get_addr call stub, | |
8293 | signalled by the presence of __tls_get_addr_opt, and we'll | |
8294 | be calling __tls_get_addr via a plt call stub, then | |
8295 | make __tls_get_addr point to __tls_get_addr_opt. */ | |
8296 | tga_fd = &htab->tls_get_addr_fd->elf; | |
8297 | if (htab->elf.dynamic_sections_created | |
8298 | && tga_fd != NULL | |
8299 | && (tga_fd->type == STT_FUNC | |
8300 | || tga_fd->needs_plt) | |
8301 | && !(SYMBOL_CALLS_LOCAL (info, tga_fd) | |
8302 | || (ELF_ST_VISIBILITY (tga_fd->other) != STV_DEFAULT | |
8303 | && tga_fd->root.type == bfd_link_hash_undefweak))) | |
8304 | { | |
8305 | struct plt_entry *ent; | |
8306 | ||
8307 | for (ent = tga_fd->plt.plist; ent != NULL; ent = ent->next) | |
8308 | if (ent->plt.refcount > 0) | |
8309 | break; | |
8310 | if (ent != NULL) | |
8311 | { | |
8312 | tga_fd->root.type = bfd_link_hash_indirect; | |
8313 | tga_fd->root.u.i.link = &opt_fd->root; | |
8314 | ppc64_elf_copy_indirect_symbol (info, opt_fd, tga_fd); | |
3bd43ebc | 8315 | opt_fd->forced_local = 0; |
a7f2871e AM |
8316 | if (opt_fd->dynindx != -1) |
8317 | { | |
8318 | /* Use __tls_get_addr_opt in dynamic relocations. */ | |
8319 | opt_fd->dynindx = -1; | |
8320 | _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr, | |
8321 | opt_fd->dynstr_index); | |
8322 | if (!bfd_elf_link_record_dynamic_symbol (info, opt_fd)) | |
854b41e7 | 8323 | return NULL; |
a7f2871e AM |
8324 | } |
8325 | htab->tls_get_addr_fd = (struct ppc_link_hash_entry *) opt_fd; | |
8326 | tga = &htab->tls_get_addr->elf; | |
8327 | if (opt != NULL && tga != NULL) | |
8328 | { | |
8329 | tga->root.type = bfd_link_hash_indirect; | |
8330 | tga->root.u.i.link = &opt->root; | |
8331 | ppc64_elf_copy_indirect_symbol (info, opt, tga); | |
3bd43ebc | 8332 | opt->forced_local = 0; |
a7f2871e AM |
8333 | _bfd_elf_link_hash_hide_symbol (info, opt, |
8334 | tga->forced_local); | |
8335 | htab->tls_get_addr = (struct ppc_link_hash_entry *) opt; | |
8336 | } | |
8337 | htab->tls_get_addr_fd->oh = htab->tls_get_addr; | |
8338 | htab->tls_get_addr_fd->is_func_descriptor = 1; | |
8339 | if (htab->tls_get_addr != NULL) | |
8340 | { | |
8341 | htab->tls_get_addr->oh = htab->tls_get_addr_fd; | |
8342 | htab->tls_get_addr->is_func = 1; | |
8343 | } | |
8344 | } | |
8345 | } | |
8346 | } | |
7c9cf415 AM |
8347 | else if (htab->params->tls_get_addr_opt < 0) |
8348 | htab->params->tls_get_addr_opt = 0; | |
a7f2871e | 8349 | } |
33c0ec9d | 8350 | return _bfd_elf_tls_setup (info->output_bfd, info); |
3a71aa26 | 8351 | } |
8387904d | 8352 | |
3a71aa26 AM |
8353 | /* Return TRUE iff REL is a branch reloc with a global symbol matching |
8354 | HASH1 or HASH2. */ | |
8387904d | 8355 | |
3a71aa26 AM |
8356 | static bfd_boolean |
8357 | branch_reloc_hash_match (const bfd *ibfd, | |
8358 | const Elf_Internal_Rela *rel, | |
8359 | const struct ppc_link_hash_entry *hash1, | |
8360 | const struct ppc_link_hash_entry *hash2) | |
8361 | { | |
8362 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd); | |
8363 | enum elf_ppc64_reloc_type r_type = ELF64_R_TYPE (rel->r_info); | |
8364 | unsigned int r_symndx = ELF64_R_SYM (rel->r_info); | |
8365 | ||
e054468f | 8366 | if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type)) |
8387904d | 8367 | { |
3a71aa26 AM |
8368 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd); |
8369 | struct elf_link_hash_entry *h; | |
8387904d | 8370 | |
3a71aa26 | 8371 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; |
b31867b6 | 8372 | h = elf_follow_link (h); |
3a71aa26 AM |
8373 | if (h == &hash1->elf || h == &hash2->elf) |
8374 | return TRUE; | |
a48ebf4d | 8375 | } |
3a71aa26 | 8376 | return FALSE; |
951fd09b | 8377 | } |
411e1bfb | 8378 | |
951fd09b AM |
8379 | /* Run through all the TLS relocs looking for optimization |
8380 | opportunities. The linker has been hacked (see ppc64elf.em) to do | |
8381 | a preliminary section layout so that we know the TLS segment | |
8382 | offsets. We can't optimize earlier because some optimizations need | |
8383 | to know the tp offset, and we need to optimize before allocating | |
8384 | dynamic relocations. */ | |
8385 | ||
8386 | bfd_boolean | |
33c0ec9d | 8387 | ppc64_elf_tls_optimize (struct bfd_link_info *info) |
951fd09b AM |
8388 | { |
8389 | bfd *ibfd; | |
8390 | asection *sec; | |
8391 | struct ppc_link_hash_table *htab; | |
663a1470 | 8392 | unsigned char *toc_ref; |
102890f0 | 8393 | int pass; |
951fd09b | 8394 | |
3cbc1e5e | 8395 | if (!bfd_link_executable (info)) |
411e1bfb AM |
8396 | return TRUE; |
8397 | ||
951fd09b | 8398 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
8399 | if (htab == NULL) |
8400 | return FALSE; | |
8401 | ||
663a1470 AM |
8402 | /* Make two passes over the relocs. On the first pass, mark toc |
8403 | entries involved with tls relocs, and check that tls relocs | |
8404 | involved in setting up a tls_get_addr call are indeed followed by | |
8405 | such a call. If they are not, we can't do any tls optimization. | |
8406 | On the second pass twiddle tls_mask flags to notify | |
8407 | relocate_section that optimization can be done, and adjust got | |
8408 | and plt refcounts. */ | |
8409 | toc_ref = NULL; | |
8410 | for (pass = 0; pass < 2; ++pass) | |
c72f2fb2 | 8411 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
663a1470 AM |
8412 | { |
8413 | Elf_Internal_Sym *locsyms = NULL; | |
8414 | asection *toc = bfd_get_section_by_name (ibfd, ".toc"); | |
8415 | ||
102890f0 AM |
8416 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) |
8417 | if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section)) | |
8418 | { | |
8419 | Elf_Internal_Rela *relstart, *rel, *relend; | |
663a1470 | 8420 | bfd_boolean found_tls_get_addr_arg = 0; |
411e1bfb | 8421 | |
102890f0 AM |
8422 | /* Read the relocations. */ |
8423 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, | |
8424 | info->keep_memory); | |
8425 | if (relstart == NULL) | |
2915c55b JK |
8426 | { |
8427 | free (toc_ref); | |
8428 | return FALSE; | |
8429 | } | |
411e1bfb | 8430 | |
102890f0 AM |
8431 | relend = relstart + sec->reloc_count; |
8432 | for (rel = relstart; rel < relend; rel++) | |
8433 | { | |
8434 | enum elf_ppc64_reloc_type r_type; | |
8435 | unsigned long r_symndx; | |
8436 | struct elf_link_hash_entry *h; | |
8437 | Elf_Internal_Sym *sym; | |
8438 | asection *sym_sec; | |
f961d9dd AM |
8439 | unsigned char *tls_mask; |
8440 | unsigned char tls_set, tls_clear, tls_type = 0; | |
102890f0 AM |
8441 | bfd_vma value; |
8442 | bfd_boolean ok_tprel, is_local; | |
8443 | long toc_ref_index = 0; | |
8444 | int expecting_tls_get_addr = 0; | |
663a1470 | 8445 | bfd_boolean ret = FALSE; |
411e1bfb | 8446 | |
102890f0 AM |
8447 | r_symndx = ELF64_R_SYM (rel->r_info); |
8448 | if (!get_sym_h (&h, &sym, &sym_sec, &tls_mask, &locsyms, | |
8449 | r_symndx, ibfd)) | |
8450 | { | |
8451 | err_free_rel: | |
8452 | if (elf_section_data (sec)->relocs != relstart) | |
8453 | free (relstart); | |
8454 | if (toc_ref != NULL) | |
8455 | free (toc_ref); | |
8456 | if (locsyms != NULL | |
0ffa91dd | 8457 | && (elf_symtab_hdr (ibfd).contents |
102890f0 AM |
8458 | != (unsigned char *) locsyms)) |
8459 | free (locsyms); | |
663a1470 | 8460 | return ret; |
102890f0 | 8461 | } |
411e1bfb | 8462 | |
102890f0 AM |
8463 | if (h != NULL) |
8464 | { | |
766bc656 AM |
8465 | if (h->root.type == bfd_link_hash_defined |
8466 | || h->root.type == bfd_link_hash_defweak) | |
8467 | value = h->root.u.def.value; | |
8468 | else if (h->root.type == bfd_link_hash_undefweak) | |
8469 | value = 0; | |
8470 | else | |
663a1470 AM |
8471 | { |
8472 | found_tls_get_addr_arg = 0; | |
8473 | continue; | |
8474 | } | |
102890f0 AM |
8475 | } |
8476 | else | |
8477 | /* Symbols referenced by TLS relocs must be of type | |
8478 | STT_TLS. So no need for .opd local sym adjust. */ | |
8479 | value = sym->st_value; | |
8480 | ||
8481 | ok_tprel = FALSE; | |
8482 | is_local = FALSE; | |
8483 | if (h == NULL | |
8484 | || !h->def_dynamic) | |
8485 | { | |
8486 | is_local = TRUE; | |
766bc656 AM |
8487 | if (h != NULL |
8488 | && h->root.type == bfd_link_hash_undefweak) | |
8489 | ok_tprel = TRUE; | |
c27b8c2a AM |
8490 | else if (sym_sec != NULL |
8491 | && sym_sec->output_section != NULL) | |
766bc656 AM |
8492 | { |
8493 | value += sym_sec->output_offset; | |
8494 | value += sym_sec->output_section->vma; | |
8495 | value -= htab->elf.tls_sec->vma; | |
8496 | ok_tprel = (value + TP_OFFSET + ((bfd_vma) 1 << 31) | |
8497 | < (bfd_vma) 1 << 32); | |
8498 | } | |
102890f0 | 8499 | } |
951fd09b | 8500 | |
102890f0 | 8501 | r_type = ELF64_R_TYPE (rel->r_info); |
663a1470 AM |
8502 | /* If this section has old-style __tls_get_addr calls |
8503 | without marker relocs, then check that each | |
8504 | __tls_get_addr call reloc is preceded by a reloc | |
8505 | that conceivably belongs to the __tls_get_addr arg | |
8506 | setup insn. If we don't find matching arg setup | |
8507 | relocs, don't do any tls optimization. */ | |
8508 | if (pass == 0 | |
8509 | && sec->has_tls_get_addr_call | |
8510 | && h != NULL | |
8511 | && (h == &htab->tls_get_addr->elf | |
8512 | || h == &htab->tls_get_addr_fd->elf) | |
8513 | && !found_tls_get_addr_arg | |
8514 | && is_branch_reloc (r_type)) | |
8515 | { | |
25f53a85 | 8516 | info->callbacks->minfo (_("%H __tls_get_addr lost arg, " |
663a1470 AM |
8517 | "TLS optimization disabled\n"), |
8518 | ibfd, sec, rel->r_offset); | |
8519 | ret = TRUE; | |
8520 | goto err_free_rel; | |
8521 | } | |
8522 | ||
8523 | found_tls_get_addr_arg = 0; | |
102890f0 AM |
8524 | switch (r_type) |
8525 | { | |
8526 | case R_PPC64_GOT_TLSLD16: | |
8527 | case R_PPC64_GOT_TLSLD16_LO: | |
8528 | expecting_tls_get_addr = 1; | |
663a1470 | 8529 | found_tls_get_addr_arg = 1; |
1a0670f3 | 8530 | /* Fall through. */ |
102890f0 AM |
8531 | |
8532 | case R_PPC64_GOT_TLSLD16_HI: | |
8533 | case R_PPC64_GOT_TLSLD16_HA: | |
8534 | /* These relocs should never be against a symbol | |
8535 | defined in a shared lib. Leave them alone if | |
8536 | that turns out to be the case. */ | |
8537 | if (!is_local) | |
8538 | continue; | |
411e1bfb | 8539 | |
102890f0 | 8540 | /* LD -> LE */ |
411e1bfb | 8541 | tls_set = 0; |
102890f0 AM |
8542 | tls_clear = TLS_LD; |
8543 | tls_type = TLS_TLS | TLS_LD; | |
8544 | break; | |
411e1bfb | 8545 | |
102890f0 AM |
8546 | case R_PPC64_GOT_TLSGD16: |
8547 | case R_PPC64_GOT_TLSGD16_LO: | |
8548 | expecting_tls_get_addr = 1; | |
663a1470 | 8549 | found_tls_get_addr_arg = 1; |
1a0670f3 | 8550 | /* Fall through. */ |
102890f0 AM |
8551 | |
8552 | case R_PPC64_GOT_TLSGD16_HI: | |
8553 | case R_PPC64_GOT_TLSGD16_HA: | |
8554 | if (ok_tprel) | |
8555 | /* GD -> LE */ | |
411e1bfb | 8556 | tls_set = 0; |
102890f0 AM |
8557 | else |
8558 | /* GD -> IE */ | |
8559 | tls_set = TLS_TLS | TLS_TPRELGD; | |
8560 | tls_clear = TLS_GD; | |
8561 | tls_type = TLS_TLS | TLS_GD; | |
8562 | break; | |
8563 | ||
8564 | case R_PPC64_GOT_TPREL16_DS: | |
8565 | case R_PPC64_GOT_TPREL16_LO_DS: | |
8566 | case R_PPC64_GOT_TPREL16_HI: | |
8567 | case R_PPC64_GOT_TPREL16_HA: | |
8568 | if (ok_tprel) | |
8569 | { | |
8570 | /* IE -> LE */ | |
8571 | tls_set = 0; | |
8572 | tls_clear = TLS_TPREL; | |
8573 | tls_type = TLS_TLS | TLS_TPREL; | |
8574 | break; | |
8575 | } | |
411e1bfb AM |
8576 | continue; |
8577 | ||
727fc41e AM |
8578 | case R_PPC64_TLSGD: |
8579 | case R_PPC64_TLSLD: | |
663a1470 | 8580 | found_tls_get_addr_arg = 1; |
1a0670f3 | 8581 | /* Fall through. */ |
663a1470 AM |
8582 | |
8583 | case R_PPC64_TLS: | |
8584 | case R_PPC64_TOC16: | |
8585 | case R_PPC64_TOC16_LO: | |
102890f0 AM |
8586 | if (sym_sec == NULL || sym_sec != toc) |
8587 | continue; | |
8588 | ||
8589 | /* Mark this toc entry as referenced by a TLS | |
8590 | code sequence. We can do that now in the | |
8591 | case of R_PPC64_TLS, and after checking for | |
8592 | tls_get_addr for the TOC16 relocs. */ | |
8593 | if (toc_ref == NULL) | |
663a1470 AM |
8594 | toc_ref = bfd_zmalloc (toc->output_section->rawsize / 8); |
8595 | if (toc_ref == NULL) | |
8596 | goto err_free_rel; | |
8597 | ||
102890f0 AM |
8598 | if (h != NULL) |
8599 | value = h->root.u.def.value; | |
8600 | else | |
8601 | value = sym->st_value; | |
8602 | value += rel->r_addend; | |
73242275 AM |
8603 | if (value % 8 != 0) |
8604 | continue; | |
8605 | BFD_ASSERT (value < toc->size | |
8606 | && toc->output_offset % 8 == 0); | |
663a1470 | 8607 | toc_ref_index = (value + toc->output_offset) / 8; |
727fc41e AM |
8608 | if (r_type == R_PPC64_TLS |
8609 | || r_type == R_PPC64_TLSGD | |
8610 | || r_type == R_PPC64_TLSLD) | |
102890f0 AM |
8611 | { |
8612 | toc_ref[toc_ref_index] = 1; | |
8613 | continue; | |
8614 | } | |
8615 | ||
8616 | if (pass != 0 && toc_ref[toc_ref_index] == 0) | |
8617 | continue; | |
8618 | ||
8619 | tls_set = 0; | |
8620 | tls_clear = 0; | |
8621 | expecting_tls_get_addr = 2; | |
8622 | break; | |
8623 | ||
8624 | case R_PPC64_TPREL64: | |
8625 | if (pass == 0 | |
8626 | || sec != toc | |
8627 | || toc_ref == NULL | |
663a1470 | 8628 | || !toc_ref[(rel->r_offset + toc->output_offset) / 8]) |
102890f0 AM |
8629 | continue; |
8630 | if (ok_tprel) | |
8631 | { | |
8632 | /* IE -> LE */ | |
8633 | tls_set = TLS_EXPLICIT; | |
8634 | tls_clear = TLS_TPREL; | |
8635 | break; | |
8636 | } | |
8637 | continue; | |
8638 | ||
8639 | case R_PPC64_DTPMOD64: | |
8640 | if (pass == 0 | |
8641 | || sec != toc | |
8642 | || toc_ref == NULL | |
663a1470 | 8643 | || !toc_ref[(rel->r_offset + toc->output_offset) / 8]) |
102890f0 AM |
8644 | continue; |
8645 | if (rel + 1 < relend | |
8646 | && (rel[1].r_info | |
8647 | == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)) | |
8648 | && rel[1].r_offset == rel->r_offset + 8) | |
8649 | { | |
8650 | if (ok_tprel) | |
8651 | /* GD -> LE */ | |
8652 | tls_set = TLS_EXPLICIT | TLS_GD; | |
8653 | else | |
8654 | /* GD -> IE */ | |
8655 | tls_set = TLS_EXPLICIT | TLS_GD | TLS_TPRELGD; | |
8656 | tls_clear = TLS_GD; | |
8657 | } | |
8658 | else | |
8659 | { | |
8660 | if (!is_local) | |
8661 | continue; | |
8662 | ||
8663 | /* LD -> LE */ | |
8664 | tls_set = TLS_EXPLICIT; | |
8665 | tls_clear = TLS_LD; | |
8666 | } | |
8667 | break; | |
8668 | ||
8669 | default: | |
8670 | continue; | |
8671 | } | |
8672 | ||
8673 | if (pass == 0) | |
8674 | { | |
727fc41e AM |
8675 | if (!expecting_tls_get_addr |
8676 | || !sec->has_tls_get_addr_call) | |
102890f0 AM |
8677 | continue; |
8678 | ||
3a71aa26 AM |
8679 | if (rel + 1 < relend |
8680 | && branch_reloc_hash_match (ibfd, rel + 1, | |
8681 | htab->tls_get_addr, | |
8682 | htab->tls_get_addr_fd)) | |
102890f0 | 8683 | { |
3a71aa26 | 8684 | if (expecting_tls_get_addr == 2) |
102890f0 | 8685 | { |
3a71aa26 | 8686 | /* Check for toc tls entries. */ |
f961d9dd | 8687 | unsigned char *toc_tls; |
3a71aa26 AM |
8688 | int retval; |
8689 | ||
8690 | retval = get_tls_mask (&toc_tls, NULL, NULL, | |
8691 | &locsyms, | |
8692 | rel, ibfd); | |
8693 | if (retval == 0) | |
8694 | goto err_free_rel; | |
663a1470 AM |
8695 | if (toc_tls != NULL) |
8696 | { | |
8697 | if ((*toc_tls & (TLS_GD | TLS_LD)) != 0) | |
8698 | found_tls_get_addr_arg = 1; | |
8699 | if (retval > 1) | |
8700 | toc_ref[toc_ref_index] = 1; | |
8701 | } | |
102890f0 | 8702 | } |
3a71aa26 | 8703 | continue; |
102890f0 AM |
8704 | } |
8705 | ||
8706 | if (expecting_tls_get_addr != 1) | |
8707 | continue; | |
8708 | ||
8709 | /* Uh oh, we didn't find the expected call. We | |
8710 | could just mark this symbol to exclude it | |
8711 | from tls optimization but it's safer to skip | |
663a1470 | 8712 | the entire optimization. */ |
695344c0 | 8713 | /* xgettext:c-format */ |
25f53a85 | 8714 | info->callbacks->minfo (_("%H arg lost __tls_get_addr, " |
663a1470 AM |
8715 | "TLS optimization disabled\n"), |
8716 | ibfd, sec, rel->r_offset); | |
8717 | ret = TRUE; | |
8718 | goto err_free_rel; | |
102890f0 AM |
8719 | } |
8720 | ||
85f7a9cb | 8721 | if (expecting_tls_get_addr && htab->tls_get_addr != NULL) |
102890f0 AM |
8722 | { |
8723 | struct plt_entry *ent; | |
8724 | for (ent = htab->tls_get_addr->elf.plt.plist; | |
8725 | ent != NULL; | |
8726 | ent = ent->next) | |
8727 | if (ent->addend == 0) | |
411e1bfb | 8728 | { |
102890f0 | 8729 | if (ent->plt.refcount > 0) |
30038c59 | 8730 | { |
102890f0 AM |
8731 | ent->plt.refcount -= 1; |
8732 | expecting_tls_get_addr = 0; | |
30038c59 | 8733 | } |
102890f0 | 8734 | break; |
411e1bfb | 8735 | } |
102890f0 | 8736 | } |
411e1bfb | 8737 | |
85f7a9cb | 8738 | if (expecting_tls_get_addr && htab->tls_get_addr_fd != NULL) |
102890f0 AM |
8739 | { |
8740 | struct plt_entry *ent; | |
8741 | for (ent = htab->tls_get_addr_fd->elf.plt.plist; | |
8742 | ent != NULL; | |
8743 | ent = ent->next) | |
8744 | if (ent->addend == 0) | |
411e1bfb | 8745 | { |
102890f0 AM |
8746 | if (ent->plt.refcount > 0) |
8747 | ent->plt.refcount -= 1; | |
8748 | break; | |
411e1bfb | 8749 | } |
102890f0 | 8750 | } |
411e1bfb | 8751 | |
102890f0 | 8752 | if (tls_clear == 0) |
30038c59 AM |
8753 | continue; |
8754 | ||
102890f0 AM |
8755 | if ((tls_set & TLS_EXPLICIT) == 0) |
8756 | { | |
8757 | struct got_entry *ent; | |
411e1bfb | 8758 | |
102890f0 AM |
8759 | /* Adjust got entry for this reloc. */ |
8760 | if (h != NULL) | |
8761 | ent = h->got.glist; | |
8762 | else | |
8763 | ent = elf_local_got_ents (ibfd)[r_symndx]; | |
411e1bfb | 8764 | |
102890f0 AM |
8765 | for (; ent != NULL; ent = ent->next) |
8766 | if (ent->addend == rel->r_addend | |
8767 | && ent->owner == ibfd | |
8768 | && ent->tls_type == tls_type) | |
8769 | break; | |
8770 | if (ent == NULL) | |
8771 | abort (); | |
411e1bfb | 8772 | |
102890f0 AM |
8773 | if (tls_set == 0) |
8774 | { | |
8775 | /* We managed to get rid of a got entry. */ | |
8776 | if (ent->got.refcount > 0) | |
8777 | ent->got.refcount -= 1; | |
8778 | } | |
8779 | } | |
8780 | else | |
8781 | { | |
8782 | /* If we got rid of a DTPMOD/DTPREL reloc pair then | |
8783 | we'll lose one or two dyn relocs. */ | |
8784 | if (!dec_dynrel_count (rel->r_info, sec, info, | |
19e08130 | 8785 | NULL, h, sym)) |
102890f0 | 8786 | return FALSE; |
411e1bfb | 8787 | |
102890f0 AM |
8788 | if (tls_set == (TLS_EXPLICIT | TLS_GD)) |
8789 | { | |
8790 | if (!dec_dynrel_count ((rel + 1)->r_info, sec, info, | |
19e08130 | 8791 | NULL, h, sym)) |
102890f0 AM |
8792 | return FALSE; |
8793 | } | |
8794 | } | |
411e1bfb | 8795 | |
102890f0 AM |
8796 | *tls_mask |= tls_set; |
8797 | *tls_mask &= ~tls_clear; | |
8798 | } | |
8c1d1bb8 | 8799 | |
102890f0 AM |
8800 | if (elf_section_data (sec)->relocs != relstart) |
8801 | free (relstart); | |
8802 | } | |
411e1bfb | 8803 | |
663a1470 AM |
8804 | if (locsyms != NULL |
8805 | && (elf_symtab_hdr (ibfd).contents != (unsigned char *) locsyms)) | |
8806 | { | |
8807 | if (!info->keep_memory) | |
8808 | free (locsyms); | |
8809 | else | |
8810 | elf_symtab_hdr (ibfd).contents = (unsigned char *) locsyms; | |
8811 | } | |
8812 | } | |
411e1bfb | 8813 | |
663a1470 AM |
8814 | if (toc_ref != NULL) |
8815 | free (toc_ref); | |
b34976b6 | 8816 | return TRUE; |
1e2f5b6e | 8817 | } |
b34976b6 | 8818 | |
c5614fa4 AM |
8819 | /* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust |
8820 | the values of any global symbols in a toc section that has been | |
8821 | edited. Globals in toc sections should be a rarity, so this function | |
8822 | sets a flag if any are found in toc sections other than the one just | |
8823 | edited, so that futher hash table traversals can be avoided. */ | |
8824 | ||
8825 | struct adjust_toc_info | |
8826 | { | |
8827 | asection *toc; | |
8828 | unsigned long *skip; | |
8829 | bfd_boolean global_toc_syms; | |
8830 | }; | |
8831 | ||
ba761f19 AM |
8832 | enum toc_skip_enum { ref_from_discarded = 1, can_optimize = 2 }; |
8833 | ||
c5614fa4 AM |
8834 | static bfd_boolean |
8835 | adjust_toc_syms (struct elf_link_hash_entry *h, void *inf) | |
8836 | { | |
8837 | struct ppc_link_hash_entry *eh; | |
8838 | struct adjust_toc_info *toc_inf = (struct adjust_toc_info *) inf; | |
854b41e7 | 8839 | unsigned long i; |
c5614fa4 | 8840 | |
c5614fa4 AM |
8841 | if (h->root.type != bfd_link_hash_defined |
8842 | && h->root.type != bfd_link_hash_defweak) | |
8843 | return TRUE; | |
8844 | ||
8845 | eh = (struct ppc_link_hash_entry *) h; | |
8846 | if (eh->adjust_done) | |
8847 | return TRUE; | |
8848 | ||
8849 | if (eh->elf.root.u.def.section == toc_inf->toc) | |
8850 | { | |
854b41e7 AM |
8851 | if (eh->elf.root.u.def.value > toc_inf->toc->rawsize) |
8852 | i = toc_inf->toc->rawsize >> 3; | |
c5614fa4 | 8853 | else |
854b41e7 AM |
8854 | i = eh->elf.root.u.def.value >> 3; |
8855 | ||
ba761f19 | 8856 | if ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0) |
c5614fa4 | 8857 | { |
4eca0228 | 8858 | _bfd_error_handler |
854b41e7 AM |
8859 | (_("%s defined on removed toc entry"), eh->elf.root.root.string); |
8860 | do | |
8861 | ++i; | |
ba761f19 | 8862 | while ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0); |
854b41e7 | 8863 | eh->elf.root.u.def.value = (bfd_vma) i << 3; |
c5614fa4 | 8864 | } |
854b41e7 AM |
8865 | |
8866 | eh->elf.root.u.def.value -= toc_inf->skip[i]; | |
c5614fa4 AM |
8867 | eh->adjust_done = 1; |
8868 | } | |
8869 | else if (strcmp (eh->elf.root.u.def.section->name, ".toc") == 0) | |
8870 | toc_inf->global_toc_syms = TRUE; | |
8871 | ||
8872 | return TRUE; | |
8873 | } | |
8874 | ||
560c8763 AM |
8875 | /* Return TRUE iff INSN is one we expect on a _LO variety toc/got reloc. */ |
8876 | ||
8877 | static bfd_boolean | |
8878 | ok_lo_toc_insn (unsigned int insn) | |
8879 | { | |
8880 | return ((insn & (0x3f << 26)) == 14u << 26 /* addi */ | |
8881 | || (insn & (0x3f << 26)) == 32u << 26 /* lwz */ | |
8882 | || (insn & (0x3f << 26)) == 34u << 26 /* lbz */ | |
8883 | || (insn & (0x3f << 26)) == 36u << 26 /* stw */ | |
8884 | || (insn & (0x3f << 26)) == 38u << 26 /* stb */ | |
8885 | || (insn & (0x3f << 26)) == 40u << 26 /* lhz */ | |
8886 | || (insn & (0x3f << 26)) == 42u << 26 /* lha */ | |
8887 | || (insn & (0x3f << 26)) == 44u << 26 /* sth */ | |
8888 | || (insn & (0x3f << 26)) == 46u << 26 /* lmw */ | |
8889 | || (insn & (0x3f << 26)) == 47u << 26 /* stmw */ | |
8890 | || (insn & (0x3f << 26)) == 48u << 26 /* lfs */ | |
8891 | || (insn & (0x3f << 26)) == 50u << 26 /* lfd */ | |
8892 | || (insn & (0x3f << 26)) == 52u << 26 /* stfs */ | |
8893 | || (insn & (0x3f << 26)) == 54u << 26 /* stfd */ | |
8894 | || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */ | |
8895 | && (insn & 3) != 1) | |
8896 | || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */ | |
8897 | && ((insn & 3) == 0 || (insn & 3) == 3)) | |
8898 | || (insn & (0x3f << 26)) == 12u << 26 /* addic */); | |
8899 | } | |
8900 | ||
c5614fa4 AM |
8901 | /* Examine all relocs referencing .toc sections in order to remove |
8902 | unused .toc entries. */ | |
8903 | ||
8904 | bfd_boolean | |
33c0ec9d | 8905 | ppc64_elf_edit_toc (struct bfd_link_info *info) |
c5614fa4 AM |
8906 | { |
8907 | bfd *ibfd; | |
8908 | struct adjust_toc_info toc_inf; | |
67f0cbdb | 8909 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
c5614fa4 | 8910 | |
67f0cbdb | 8911 | htab->do_toc_opt = 1; |
c5614fa4 | 8912 | toc_inf.global_toc_syms = TRUE; |
c72f2fb2 | 8913 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
c5614fa4 AM |
8914 | { |
8915 | asection *toc, *sec; | |
8916 | Elf_Internal_Shdr *symtab_hdr; | |
8917 | Elf_Internal_Sym *local_syms; | |
425b145b | 8918 | Elf_Internal_Rela *relstart, *rel, *toc_relocs; |
c5614fa4 AM |
8919 | unsigned long *skip, *drop; |
8920 | unsigned char *used; | |
8921 | unsigned char *keep, last, some_unused; | |
8922 | ||
854b41e7 AM |
8923 | if (!is_ppc64_elf (ibfd)) |
8924 | continue; | |
8925 | ||
c5614fa4 AM |
8926 | toc = bfd_get_section_by_name (ibfd, ".toc"); |
8927 | if (toc == NULL | |
92b7a70f | 8928 | || toc->size == 0 |
dbaa2011 AM |
8929 | || toc->sec_info_type == SEC_INFO_TYPE_JUST_SYMS |
8930 | || discarded_section (toc)) | |
c5614fa4 AM |
8931 | continue; |
8932 | ||
425b145b | 8933 | toc_relocs = NULL; |
c5614fa4 | 8934 | local_syms = NULL; |
0ffa91dd | 8935 | symtab_hdr = &elf_symtab_hdr (ibfd); |
c5614fa4 AM |
8936 | |
8937 | /* Look at sections dropped from the final link. */ | |
8938 | skip = NULL; | |
8939 | relstart = NULL; | |
8940 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
8941 | { | |
8942 | if (sec->reloc_count == 0 | |
dbaa2011 | 8943 | || !discarded_section (sec) |
c5614fa4 AM |
8944 | || get_opd_info (sec) |
8945 | || (sec->flags & SEC_ALLOC) == 0 | |
8946 | || (sec->flags & SEC_DEBUGGING) != 0) | |
8947 | continue; | |
8948 | ||
8949 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, FALSE); | |
8950 | if (relstart == NULL) | |
8951 | goto error_ret; | |
8952 | ||
8953 | /* Run through the relocs to see which toc entries might be | |
8954 | unused. */ | |
8955 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
8956 | { | |
8957 | enum elf_ppc64_reloc_type r_type; | |
8958 | unsigned long r_symndx; | |
8959 | asection *sym_sec; | |
8960 | struct elf_link_hash_entry *h; | |
8961 | Elf_Internal_Sym *sym; | |
8962 | bfd_vma val; | |
8963 | ||
8964 | r_type = ELF64_R_TYPE (rel->r_info); | |
8965 | switch (r_type) | |
8966 | { | |
8967 | default: | |
8968 | continue; | |
8969 | ||
8970 | case R_PPC64_TOC16: | |
8971 | case R_PPC64_TOC16_LO: | |
8972 | case R_PPC64_TOC16_HI: | |
8973 | case R_PPC64_TOC16_HA: | |
8974 | case R_PPC64_TOC16_DS: | |
8975 | case R_PPC64_TOC16_LO_DS: | |
8976 | break; | |
8977 | } | |
8978 | ||
8979 | r_symndx = ELF64_R_SYM (rel->r_info); | |
8980 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
8981 | r_symndx, ibfd)) | |
8982 | goto error_ret; | |
8983 | ||
8984 | if (sym_sec != toc) | |
8985 | continue; | |
8986 | ||
8987 | if (h != NULL) | |
8988 | val = h->root.u.def.value; | |
8989 | else | |
8990 | val = sym->st_value; | |
8991 | val += rel->r_addend; | |
8992 | ||
8993 | if (val >= toc->size) | |
8994 | continue; | |
8995 | ||
8996 | /* Anything in the toc ought to be aligned to 8 bytes. | |
8997 | If not, don't mark as unused. */ | |
8998 | if (val & 7) | |
8999 | continue; | |
9000 | ||
9001 | if (skip == NULL) | |
9002 | { | |
854b41e7 | 9003 | skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8); |
c5614fa4 AM |
9004 | if (skip == NULL) |
9005 | goto error_ret; | |
9006 | } | |
9007 | ||
ba761f19 | 9008 | skip[val >> 3] = ref_from_discarded; |
c5614fa4 AM |
9009 | } |
9010 | ||
9011 | if (elf_section_data (sec)->relocs != relstart) | |
9012 | free (relstart); | |
9013 | } | |
9014 | ||
ba761f19 AM |
9015 | /* For largetoc loads of address constants, we can convert |
9016 | . addis rx,2,addr@got@ha | |
9017 | . ld ry,addr@got@l(rx) | |
9018 | to | |
9019 | . addis rx,2,addr@toc@ha | |
9020 | . addi ry,rx,addr@toc@l | |
9021 | when addr is within 2G of the toc pointer. This then means | |
9022 | that the word storing "addr" in the toc is no longer needed. */ | |
68ffbac6 | 9023 | |
ba761f19 AM |
9024 | if (!ppc64_elf_tdata (ibfd)->has_small_toc_reloc |
9025 | && toc->output_section->rawsize < (bfd_vma) 1 << 31 | |
9026 | && toc->reloc_count != 0) | |
9027 | { | |
9028 | /* Read toc relocs. */ | |
425b145b AM |
9029 | toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL, |
9030 | info->keep_memory); | |
9031 | if (toc_relocs == NULL) | |
ba761f19 AM |
9032 | goto error_ret; |
9033 | ||
425b145b | 9034 | for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel) |
ba761f19 AM |
9035 | { |
9036 | enum elf_ppc64_reloc_type r_type; | |
9037 | unsigned long r_symndx; | |
9038 | asection *sym_sec; | |
9039 | struct elf_link_hash_entry *h; | |
9040 | Elf_Internal_Sym *sym; | |
9041 | bfd_vma val, addr; | |
9042 | ||
9043 | r_type = ELF64_R_TYPE (rel->r_info); | |
9044 | if (r_type != R_PPC64_ADDR64) | |
9045 | continue; | |
9046 | ||
9047 | r_symndx = ELF64_R_SYM (rel->r_info); | |
9048 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
9049 | r_symndx, ibfd)) | |
9050 | goto error_ret; | |
9051 | ||
425b145b | 9052 | if (sym_sec == NULL |
c27b8c2a | 9053 | || sym_sec->output_section == NULL |
dbaa2011 | 9054 | || discarded_section (sym_sec)) |
425b145b AM |
9055 | continue; |
9056 | ||
afe397ea | 9057 | if (!SYMBOL_REFERENCES_LOCAL (info, h)) |
ba761f19 AM |
9058 | continue; |
9059 | ||
9060 | if (h != NULL) | |
bddc25c9 AM |
9061 | { |
9062 | if (h->type == STT_GNU_IFUNC) | |
9063 | continue; | |
9064 | val = h->root.u.def.value; | |
9065 | } | |
ba761f19 | 9066 | else |
bddc25c9 AM |
9067 | { |
9068 | if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
9069 | continue; | |
9070 | val = sym->st_value; | |
9071 | } | |
ba761f19 AM |
9072 | val += rel->r_addend; |
9073 | val += sym_sec->output_section->vma + sym_sec->output_offset; | |
9074 | ||
9075 | /* We don't yet know the exact toc pointer value, but we | |
9076 | know it will be somewhere in the toc section. Don't | |
9077 | optimize if the difference from any possible toc | |
9078 | pointer is outside [ff..f80008000, 7fff7fff]. */ | |
9079 | addr = toc->output_section->vma + TOC_BASE_OFF; | |
9080 | if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32) | |
9081 | continue; | |
9082 | ||
9083 | addr = toc->output_section->vma + toc->output_section->rawsize; | |
9084 | if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32) | |
9085 | continue; | |
9086 | ||
9087 | if (skip == NULL) | |
9088 | { | |
9089 | skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8); | |
9090 | if (skip == NULL) | |
9091 | goto error_ret; | |
9092 | } | |
9093 | ||
9094 | skip[rel->r_offset >> 3] | |
425b145b | 9095 | |= can_optimize | ((rel - toc_relocs) << 2); |
ba761f19 | 9096 | } |
ba761f19 AM |
9097 | } |
9098 | ||
c5614fa4 AM |
9099 | if (skip == NULL) |
9100 | continue; | |
9101 | ||
9102 | used = bfd_zmalloc (sizeof (*used) * (toc->size + 7) / 8); | |
9103 | if (used == NULL) | |
9104 | { | |
9105 | error_ret: | |
9106 | if (local_syms != NULL | |
9107 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
9108 | free (local_syms); | |
9109 | if (sec != NULL | |
9110 | && relstart != NULL | |
9111 | && elf_section_data (sec)->relocs != relstart) | |
9112 | free (relstart); | |
425b145b AM |
9113 | if (toc_relocs != NULL |
9114 | && elf_section_data (toc)->relocs != toc_relocs) | |
9115 | free (toc_relocs); | |
c5614fa4 AM |
9116 | if (skip != NULL) |
9117 | free (skip); | |
9118 | return FALSE; | |
9119 | } | |
9120 | ||
30038c59 AM |
9121 | /* Now check all kept sections that might reference the toc. |
9122 | Check the toc itself last. */ | |
9123 | for (sec = (ibfd->sections == toc && toc->next ? toc->next | |
9124 | : ibfd->sections); | |
c5614fa4 | 9125 | sec != NULL; |
c5614fa4 | 9126 | sec = (sec == toc ? NULL |
c5614fa4 | 9127 | : sec->next == NULL ? toc |
30038c59 | 9128 | : sec->next == toc && toc->next ? toc->next |
c5614fa4 AM |
9129 | : sec->next)) |
9130 | { | |
9131 | int repeat; | |
9132 | ||
9133 | if (sec->reloc_count == 0 | |
dbaa2011 | 9134 | || discarded_section (sec) |
c5614fa4 AM |
9135 | || get_opd_info (sec) |
9136 | || (sec->flags & SEC_ALLOC) == 0 | |
9137 | || (sec->flags & SEC_DEBUGGING) != 0) | |
9138 | continue; | |
9139 | ||
854b41e7 AM |
9140 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, |
9141 | info->keep_memory); | |
c5614fa4 | 9142 | if (relstart == NULL) |
2915c55b JK |
9143 | { |
9144 | free (used); | |
9145 | goto error_ret; | |
9146 | } | |
c5614fa4 AM |
9147 | |
9148 | /* Mark toc entries referenced as used. */ | |
c5614fa4 | 9149 | do |
d4f1ee75 AM |
9150 | { |
9151 | repeat = 0; | |
9152 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
9153 | { | |
9154 | enum elf_ppc64_reloc_type r_type; | |
9155 | unsigned long r_symndx; | |
9156 | asection *sym_sec; | |
9157 | struct elf_link_hash_entry *h; | |
9158 | Elf_Internal_Sym *sym; | |
9159 | bfd_vma val; | |
9160 | enum {no_check, check_lo, check_ha} insn_check; | |
98528052 | 9161 | |
d4f1ee75 AM |
9162 | r_type = ELF64_R_TYPE (rel->r_info); |
9163 | switch (r_type) | |
9164 | { | |
9165 | default: | |
9166 | insn_check = no_check; | |
9167 | break; | |
98528052 | 9168 | |
d4f1ee75 AM |
9169 | case R_PPC64_GOT_TLSLD16_HA: |
9170 | case R_PPC64_GOT_TLSGD16_HA: | |
9171 | case R_PPC64_GOT_TPREL16_HA: | |
9172 | case R_PPC64_GOT_DTPREL16_HA: | |
9173 | case R_PPC64_GOT16_HA: | |
9174 | case R_PPC64_TOC16_HA: | |
9175 | insn_check = check_ha; | |
9176 | break; | |
98528052 | 9177 | |
d4f1ee75 AM |
9178 | case R_PPC64_GOT_TLSLD16_LO: |
9179 | case R_PPC64_GOT_TLSGD16_LO: | |
9180 | case R_PPC64_GOT_TPREL16_LO_DS: | |
9181 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
9182 | case R_PPC64_GOT16_LO: | |
9183 | case R_PPC64_GOT16_LO_DS: | |
9184 | case R_PPC64_TOC16_LO: | |
9185 | case R_PPC64_TOC16_LO_DS: | |
9186 | insn_check = check_lo; | |
9187 | break; | |
9188 | } | |
560c8763 | 9189 | |
d4f1ee75 AM |
9190 | if (insn_check != no_check) |
9191 | { | |
9192 | bfd_vma off = rel->r_offset & ~3; | |
9193 | unsigned char buf[4]; | |
9194 | unsigned int insn; | |
c5614fa4 | 9195 | |
d4f1ee75 AM |
9196 | if (!bfd_get_section_contents (ibfd, sec, buf, off, 4)) |
9197 | { | |
9198 | free (used); | |
9199 | goto error_ret; | |
9200 | } | |
9201 | insn = bfd_get_32 (ibfd, buf); | |
9202 | if (insn_check == check_lo | |
9203 | ? !ok_lo_toc_insn (insn) | |
9204 | : ((insn & ((0x3f << 26) | 0x1f << 16)) | |
9205 | != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */)) | |
9206 | { | |
9207 | char str[12]; | |
9208 | ||
9209 | ppc64_elf_tdata (ibfd)->unexpected_toc_insn = 1; | |
9210 | sprintf (str, "%#08x", insn); | |
9211 | info->callbacks->einfo | |
695344c0 | 9212 | /* xgettext:c-format */ |
d4f1ee75 AM |
9213 | (_("%P: %H: toc optimization is not supported for" |
9214 | " %s instruction.\n"), | |
9215 | ibfd, sec, rel->r_offset & ~3, str); | |
9216 | } | |
9217 | } | |
c5614fa4 | 9218 | |
d4f1ee75 AM |
9219 | switch (r_type) |
9220 | { | |
9221 | case R_PPC64_TOC16: | |
9222 | case R_PPC64_TOC16_LO: | |
9223 | case R_PPC64_TOC16_HI: | |
9224 | case R_PPC64_TOC16_HA: | |
9225 | case R_PPC64_TOC16_DS: | |
9226 | case R_PPC64_TOC16_LO_DS: | |
9227 | /* In case we're taking addresses of toc entries. */ | |
9228 | case R_PPC64_ADDR64: | |
9229 | break; | |
c5614fa4 | 9230 | |
d4f1ee75 AM |
9231 | default: |
9232 | continue; | |
9233 | } | |
c5614fa4 | 9234 | |
d4f1ee75 AM |
9235 | r_symndx = ELF64_R_SYM (rel->r_info); |
9236 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
9237 | r_symndx, ibfd)) | |
9238 | { | |
9239 | free (used); | |
9240 | goto error_ret; | |
9241 | } | |
c5614fa4 | 9242 | |
d4f1ee75 AM |
9243 | if (sym_sec != toc) |
9244 | continue; | |
c5614fa4 | 9245 | |
d4f1ee75 AM |
9246 | if (h != NULL) |
9247 | val = h->root.u.def.value; | |
9248 | else | |
9249 | val = sym->st_value; | |
9250 | val += rel->r_addend; | |
ba761f19 | 9251 | |
d4f1ee75 AM |
9252 | if (val >= toc->size) |
9253 | continue; | |
ba761f19 | 9254 | |
d4f1ee75 AM |
9255 | if ((skip[val >> 3] & can_optimize) != 0) |
9256 | { | |
9257 | bfd_vma off; | |
9258 | unsigned char opc; | |
9259 | ||
9260 | switch (r_type) | |
9261 | { | |
9262 | case R_PPC64_TOC16_HA: | |
ba761f19 | 9263 | break; |
ba761f19 | 9264 | |
d4f1ee75 AM |
9265 | case R_PPC64_TOC16_LO_DS: |
9266 | off = rel->r_offset; | |
9267 | off += (bfd_big_endian (ibfd) ? -2 : 3); | |
9268 | if (!bfd_get_section_contents (ibfd, sec, &opc, | |
9269 | off, 1)) | |
9270 | { | |
9271 | free (used); | |
9272 | goto error_ret; | |
9273 | } | |
9274 | if ((opc & (0x3f << 2)) == (58u << 2)) | |
9275 | break; | |
1a0670f3 | 9276 | /* Fall through. */ |
ba761f19 | 9277 | |
d4f1ee75 AM |
9278 | default: |
9279 | /* Wrong sort of reloc, or not a ld. We may | |
9280 | as well clear ref_from_discarded too. */ | |
9281 | skip[val >> 3] = 0; | |
9282 | } | |
9283 | } | |
9284 | ||
9285 | if (sec != toc) | |
9286 | used[val >> 3] = 1; | |
9287 | /* For the toc section, we only mark as used if this | |
9288 | entry itself isn't unused. */ | |
9289 | else if ((used[rel->r_offset >> 3] | |
9290 | || !(skip[rel->r_offset >> 3] & ref_from_discarded)) | |
9291 | && !used[val >> 3]) | |
9292 | { | |
9293 | /* Do all the relocs again, to catch reference | |
9294 | chains. */ | |
9295 | repeat = 1; | |
9296 | used[val >> 3] = 1; | |
9297 | } | |
9298 | } | |
9299 | } | |
c5614fa4 | 9300 | while (repeat); |
854b41e7 AM |
9301 | |
9302 | if (elf_section_data (sec)->relocs != relstart) | |
9303 | free (relstart); | |
c5614fa4 AM |
9304 | } |
9305 | ||
9306 | /* Merge the used and skip arrays. Assume that TOC | |
9307 | doublewords not appearing as either used or unused belong | |
9308 | to to an entry more than one doubleword in size. */ | |
9309 | for (drop = skip, keep = used, last = 0, some_unused = 0; | |
9310 | drop < skip + (toc->size + 7) / 8; | |
9311 | ++drop, ++keep) | |
9312 | { | |
9313 | if (*keep) | |
9314 | { | |
ba761f19 AM |
9315 | *drop &= ~ref_from_discarded; |
9316 | if ((*drop & can_optimize) != 0) | |
9317 | some_unused = 1; | |
c5614fa4 AM |
9318 | last = 0; |
9319 | } | |
b140b010 | 9320 | else if ((*drop & ref_from_discarded) != 0) |
c5614fa4 AM |
9321 | { |
9322 | some_unused = 1; | |
ba761f19 | 9323 | last = ref_from_discarded; |
c5614fa4 AM |
9324 | } |
9325 | else | |
9326 | *drop = last; | |
9327 | } | |
9328 | ||
9329 | free (used); | |
9330 | ||
9331 | if (some_unused) | |
9332 | { | |
9333 | bfd_byte *contents, *src; | |
9334 | unsigned long off; | |
d62b3684 | 9335 | Elf_Internal_Sym *sym; |
ba761f19 | 9336 | bfd_boolean local_toc_syms = FALSE; |
c5614fa4 AM |
9337 | |
9338 | /* Shuffle the toc contents, and at the same time convert the | |
9339 | skip array from booleans into offsets. */ | |
9340 | if (!bfd_malloc_and_get_section (ibfd, toc, &contents)) | |
9341 | goto error_ret; | |
9342 | ||
9343 | elf_section_data (toc)->this_hdr.contents = contents; | |
9344 | ||
9345 | for (src = contents, off = 0, drop = skip; | |
9346 | src < contents + toc->size; | |
9347 | src += 8, ++drop) | |
9348 | { | |
ba761f19 AM |
9349 | if ((*drop & (can_optimize | ref_from_discarded)) != 0) |
9350 | off += 8; | |
c5614fa4 AM |
9351 | else if (off != 0) |
9352 | { | |
9353 | *drop = off; | |
9354 | memcpy (src - off, src, 8); | |
9355 | } | |
9356 | } | |
854b41e7 | 9357 | *drop = off; |
c5614fa4 AM |
9358 | toc->rawsize = toc->size; |
9359 | toc->size = src - contents - off; | |
9360 | ||
ba761f19 AM |
9361 | /* Adjust addends for relocs against the toc section sym, |
9362 | and optimize any accesses we can. */ | |
c5614fa4 AM |
9363 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) |
9364 | { | |
9365 | if (sec->reloc_count == 0 | |
dbaa2011 | 9366 | || discarded_section (sec)) |
c5614fa4 AM |
9367 | continue; |
9368 | ||
9369 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, | |
854b41e7 | 9370 | info->keep_memory); |
c5614fa4 AM |
9371 | if (relstart == NULL) |
9372 | goto error_ret; | |
9373 | ||
9374 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
9375 | { | |
9376 | enum elf_ppc64_reloc_type r_type; | |
9377 | unsigned long r_symndx; | |
9378 | asection *sym_sec; | |
9379 | struct elf_link_hash_entry *h; | |
854b41e7 | 9380 | bfd_vma val; |
c5614fa4 AM |
9381 | |
9382 | r_type = ELF64_R_TYPE (rel->r_info); | |
9383 | switch (r_type) | |
9384 | { | |
9385 | default: | |
9386 | continue; | |
9387 | ||
9388 | case R_PPC64_TOC16: | |
9389 | case R_PPC64_TOC16_LO: | |
9390 | case R_PPC64_TOC16_HI: | |
9391 | case R_PPC64_TOC16_HA: | |
9392 | case R_PPC64_TOC16_DS: | |
9393 | case R_PPC64_TOC16_LO_DS: | |
9394 | case R_PPC64_ADDR64: | |
9395 | break; | |
9396 | } | |
9397 | ||
9398 | r_symndx = ELF64_R_SYM (rel->r_info); | |
9399 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
9400 | r_symndx, ibfd)) | |
9401 | goto error_ret; | |
9402 | ||
ba761f19 | 9403 | if (sym_sec != toc) |
c5614fa4 AM |
9404 | continue; |
9405 | ||
ba761f19 AM |
9406 | if (h != NULL) |
9407 | val = h->root.u.def.value; | |
9408 | else | |
9409 | { | |
9410 | val = sym->st_value; | |
9411 | if (val != 0) | |
9412 | local_toc_syms = TRUE; | |
9413 | } | |
9414 | ||
9415 | val += rel->r_addend; | |
854b41e7 AM |
9416 | |
9417 | if (val > toc->rawsize) | |
9418 | val = toc->rawsize; | |
ba761f19 AM |
9419 | else if ((skip[val >> 3] & ref_from_discarded) != 0) |
9420 | continue; | |
9421 | else if ((skip[val >> 3] & can_optimize) != 0) | |
9422 | { | |
9423 | Elf_Internal_Rela *tocrel | |
425b145b | 9424 | = toc_relocs + (skip[val >> 3] >> 2); |
ba761f19 AM |
9425 | unsigned long tsym = ELF64_R_SYM (tocrel->r_info); |
9426 | ||
9427 | switch (r_type) | |
9428 | { | |
9429 | case R_PPC64_TOC16_HA: | |
9430 | rel->r_info = ELF64_R_INFO (tsym, R_PPC64_TOC16_HA); | |
9431 | break; | |
9432 | ||
9433 | case R_PPC64_TOC16_LO_DS: | |
9434 | rel->r_info = ELF64_R_INFO (tsym, R_PPC64_LO_DS_OPT); | |
9435 | break; | |
9436 | ||
9437 | default: | |
28942f62 AM |
9438 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) |
9439 | ppc_howto_init (); | |
b140b010 | 9440 | info->callbacks->einfo |
695344c0 | 9441 | /* xgettext:c-format */ |
bc30df16 | 9442 | (_("%P: %H: %s references " |
b140b010 AM |
9443 | "optimized away TOC entry\n"), |
9444 | ibfd, sec, rel->r_offset, | |
9445 | ppc64_elf_howto_table[r_type]->name); | |
9446 | bfd_set_error (bfd_error_bad_value); | |
9447 | goto error_ret; | |
ba761f19 AM |
9448 | } |
9449 | rel->r_addend = tocrel->r_addend; | |
9450 | elf_section_data (sec)->relocs = relstart; | |
9451 | continue; | |
9452 | } | |
9453 | ||
9454 | if (h != NULL || sym->st_value != 0) | |
9455 | continue; | |
854b41e7 AM |
9456 | |
9457 | rel->r_addend -= skip[val >> 3]; | |
9458 | elf_section_data (sec)->relocs = relstart; | |
c5614fa4 | 9459 | } |
854b41e7 AM |
9460 | |
9461 | if (elf_section_data (sec)->relocs != relstart) | |
9462 | free (relstart); | |
c5614fa4 AM |
9463 | } |
9464 | ||
9465 | /* We shouldn't have local or global symbols defined in the TOC, | |
9466 | but handle them anyway. */ | |
df22d223 AM |
9467 | if (local_syms != NULL) |
9468 | for (sym = local_syms; | |
9469 | sym < local_syms + symtab_hdr->sh_info; | |
9470 | ++sym) | |
9471 | if (sym->st_value != 0 | |
9472 | && bfd_section_from_elf_index (ibfd, sym->st_shndx) == toc) | |
9473 | { | |
9474 | unsigned long i; | |
854b41e7 | 9475 | |
df22d223 AM |
9476 | if (sym->st_value > toc->rawsize) |
9477 | i = toc->rawsize >> 3; | |
9478 | else | |
9479 | i = sym->st_value >> 3; | |
854b41e7 | 9480 | |
df22d223 AM |
9481 | if ((skip[i] & (ref_from_discarded | can_optimize)) != 0) |
9482 | { | |
9483 | if (local_toc_syms) | |
4eca0228 | 9484 | _bfd_error_handler |
df22d223 AM |
9485 | (_("%s defined on removed toc entry"), |
9486 | bfd_elf_sym_name (ibfd, symtab_hdr, sym, NULL)); | |
9487 | do | |
9488 | ++i; | |
9489 | while ((skip[i] & (ref_from_discarded | can_optimize))); | |
9490 | sym->st_value = (bfd_vma) i << 3; | |
9491 | } | |
d62b3684 | 9492 | |
df22d223 AM |
9493 | sym->st_value -= skip[i]; |
9494 | symtab_hdr->contents = (unsigned char *) local_syms; | |
9495 | } | |
c5614fa4 | 9496 | |
854b41e7 | 9497 | /* Adjust any global syms defined in this toc input section. */ |
c5614fa4 AM |
9498 | if (toc_inf.global_toc_syms) |
9499 | { | |
9500 | toc_inf.toc = toc; | |
9501 | toc_inf.skip = skip; | |
9502 | toc_inf.global_toc_syms = FALSE; | |
9503 | elf_link_hash_traverse (elf_hash_table (info), adjust_toc_syms, | |
9504 | &toc_inf); | |
9505 | } | |
854b41e7 AM |
9506 | |
9507 | if (toc->reloc_count != 0) | |
9508 | { | |
d4730f92 | 9509 | Elf_Internal_Shdr *rel_hdr; |
854b41e7 AM |
9510 | Elf_Internal_Rela *wrel; |
9511 | bfd_size_type sz; | |
9512 | ||
854b41e7 | 9513 | /* Remove unused toc relocs, and adjust those we keep. */ |
28be611c AM |
9514 | if (toc_relocs == NULL) |
9515 | toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL, | |
9516 | info->keep_memory); | |
9517 | if (toc_relocs == NULL) | |
9518 | goto error_ret; | |
9519 | ||
425b145b AM |
9520 | wrel = toc_relocs; |
9521 | for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel) | |
ba761f19 AM |
9522 | if ((skip[rel->r_offset >> 3] |
9523 | & (ref_from_discarded | can_optimize)) == 0) | |
854b41e7 AM |
9524 | { |
9525 | wrel->r_offset = rel->r_offset - skip[rel->r_offset >> 3]; | |
9526 | wrel->r_info = rel->r_info; | |
9527 | wrel->r_addend = rel->r_addend; | |
9528 | ++wrel; | |
9529 | } | |
9530 | else if (!dec_dynrel_count (rel->r_info, toc, info, | |
9531 | &local_syms, NULL, NULL)) | |
9532 | goto error_ret; | |
9533 | ||
425b145b AM |
9534 | elf_section_data (toc)->relocs = toc_relocs; |
9535 | toc->reloc_count = wrel - toc_relocs; | |
d4730f92 BS |
9536 | rel_hdr = _bfd_elf_single_rel_hdr (toc); |
9537 | sz = rel_hdr->sh_entsize; | |
9538 | rel_hdr->sh_size = toc->reloc_count * sz; | |
854b41e7 | 9539 | } |
c5614fa4 | 9540 | } |
28be611c AM |
9541 | else if (toc_relocs != NULL |
9542 | && elf_section_data (toc)->relocs != toc_relocs) | |
425b145b | 9543 | free (toc_relocs); |
c5614fa4 AM |
9544 | |
9545 | if (local_syms != NULL | |
9546 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
9547 | { | |
9548 | if (!info->keep_memory) | |
9549 | free (local_syms); | |
9550 | else | |
9551 | symtab_hdr->contents = (unsigned char *) local_syms; | |
9552 | } | |
9553 | free (skip); | |
9554 | } | |
9555 | ||
9556 | return TRUE; | |
9557 | } | |
9558 | ||
1bbe0902 AM |
9559 | /* Return true iff input section I references the TOC using |
9560 | instructions limited to +/-32k offsets. */ | |
9561 | ||
9562 | bfd_boolean | |
9563 | ppc64_elf_has_small_toc_reloc (asection *i) | |
9564 | { | |
9565 | return (is_ppc64_elf (i->owner) | |
9566 | && ppc64_elf_tdata (i->owner)->has_small_toc_reloc); | |
9567 | } | |
9568 | ||
927be08e AM |
9569 | /* Allocate space for one GOT entry. */ |
9570 | ||
9571 | static void | |
9572 | allocate_got (struct elf_link_hash_entry *h, | |
9573 | struct bfd_link_info *info, | |
9574 | struct got_entry *gent) | |
9575 | { | |
9576 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
9577 | bfd_boolean dyn; | |
9578 | struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h; | |
9579 | int entsize = (gent->tls_type & eh->tls_mask & (TLS_GD | TLS_LD) | |
9580 | ? 16 : 8); | |
9581 | int rentsize = (gent->tls_type & eh->tls_mask & TLS_GD | |
9582 | ? 2 : 1) * sizeof (Elf64_External_Rela); | |
9583 | asection *got = ppc64_elf_tdata (gent->owner)->got; | |
9584 | ||
9585 | gent->got.offset = got->size; | |
9586 | got->size += entsize; | |
9587 | ||
9588 | dyn = htab->elf.dynamic_sections_created; | |
19e08130 | 9589 | if (h->type == STT_GNU_IFUNC) |
927be08e | 9590 | { |
33e44f2e | 9591 | htab->elf.irelplt->size += rentsize; |
19e08130 | 9592 | htab->got_reli_size += rentsize; |
927be08e | 9593 | } |
0e1862bb | 9594 | else if ((bfd_link_pic (info) |
19e08130 AM |
9595 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)) |
9596 | && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
9597 | || h->root.type != bfd_link_hash_undefweak)) | |
927be08e | 9598 | { |
19e08130 | 9599 | asection *relgot = ppc64_elf_tdata (gent->owner)->relgot; |
927be08e | 9600 | relgot->size += rentsize; |
927be08e AM |
9601 | } |
9602 | } | |
9603 | ||
7865406b AM |
9604 | /* This function merges got entries in the same toc group. */ |
9605 | ||
9606 | static void | |
9607 | merge_got_entries (struct got_entry **pent) | |
9608 | { | |
9609 | struct got_entry *ent, *ent2; | |
9610 | ||
9611 | for (ent = *pent; ent != NULL; ent = ent->next) | |
9612 | if (!ent->is_indirect) | |
9613 | for (ent2 = ent->next; ent2 != NULL; ent2 = ent2->next) | |
9614 | if (!ent2->is_indirect | |
9615 | && ent2->addend == ent->addend | |
9616 | && ent2->tls_type == ent->tls_type | |
9617 | && elf_gp (ent2->owner) == elf_gp (ent->owner)) | |
9618 | { | |
9619 | ent2->is_indirect = TRUE; | |
9620 | ent2->got.ent = ent; | |
9621 | } | |
9622 | } | |
9623 | ||
65f38f15 AM |
9624 | /* Allocate space in .plt, .got and associated reloc sections for |
9625 | dynamic relocs. */ | |
5bd4f169 | 9626 | |
b34976b6 | 9627 | static bfd_boolean |
4ce794b7 | 9628 | allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf) |
5bd4f169 | 9629 | { |
65f38f15 AM |
9630 | struct bfd_link_info *info; |
9631 | struct ppc_link_hash_table *htab; | |
5bd4f169 | 9632 | asection *s; |
65f38f15 | 9633 | struct ppc_link_hash_entry *eh; |
0b8bcf0d | 9634 | struct got_entry **pgent, *gent; |
5bd4f169 | 9635 | |
e92d460e | 9636 | if (h->root.type == bfd_link_hash_indirect) |
b34976b6 | 9637 | return TRUE; |
5bd4f169 | 9638 | |
65f38f15 AM |
9639 | info = (struct bfd_link_info *) inf; |
9640 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
9641 | if (htab == NULL) |
9642 | return FALSE; | |
5bd4f169 | 9643 | |
951fd09b AM |
9644 | eh = (struct ppc_link_hash_entry *) h; |
9645 | /* Run through the TLS GD got entries first if we're changing them | |
9646 | to TPREL. */ | |
e7b938ca | 9647 | if ((eh->tls_mask & TLS_TPRELGD) != 0) |
951fd09b AM |
9648 | for (gent = h->got.glist; gent != NULL; gent = gent->next) |
9649 | if (gent->got.refcount > 0 | |
9650 | && (gent->tls_type & TLS_GD) != 0) | |
9651 | { | |
9652 | /* This was a GD entry that has been converted to TPREL. If | |
9653 | there happens to be a TPREL entry we can use that one. */ | |
9654 | struct got_entry *ent; | |
9655 | for (ent = h->got.glist; ent != NULL; ent = ent->next) | |
9656 | if (ent->got.refcount > 0 | |
9657 | && (ent->tls_type & TLS_TPREL) != 0 | |
e717da7e AM |
9658 | && ent->addend == gent->addend |
9659 | && ent->owner == gent->owner) | |
951fd09b AM |
9660 | { |
9661 | gent->got.refcount = 0; | |
9662 | break; | |
9663 | } | |
9664 | ||
9665 | /* If not, then we'll be using our own TPREL entry. */ | |
9666 | if (gent->got.refcount != 0) | |
9667 | gent->tls_type = TLS_TLS | TLS_TPREL; | |
9668 | } | |
9669 | ||
7865406b AM |
9670 | /* Remove any list entry that won't generate a word in the GOT before |
9671 | we call merge_got_entries. Otherwise we risk merging to empty | |
9672 | entries. */ | |
0b8bcf0d AM |
9673 | pgent = &h->got.glist; |
9674 | while ((gent = *pgent) != NULL) | |
411e1bfb | 9675 | if (gent->got.refcount > 0) |
7865406b AM |
9676 | { |
9677 | if ((gent->tls_type & TLS_LD) != 0 | |
9678 | && !h->def_dynamic) | |
9679 | { | |
9680 | ppc64_tlsld_got (gent->owner)->got.refcount += 1; | |
9681 | *pgent = gent->next; | |
9682 | } | |
9683 | else | |
9684 | pgent = &gent->next; | |
9685 | } | |
9686 | else | |
9687 | *pgent = gent->next; | |
9688 | ||
9689 | if (!htab->do_multi_toc) | |
9690 | merge_got_entries (&h->got.glist); | |
9691 | ||
9692 | for (gent = h->got.glist; gent != NULL; gent = gent->next) | |
9693 | if (!gent->is_indirect) | |
411e1bfb AM |
9694 | { |
9695 | /* Make sure this symbol is output as a dynamic symbol. | |
951fd09b AM |
9696 | Undefined weak syms won't yet be marked as dynamic, |
9697 | nor will all TLS symbols. */ | |
411e1bfb | 9698 | if (h->dynindx == -1 |
b099ab9f | 9699 | && !h->forced_local |
25f23106 | 9700 | && h->type != STT_GNU_IFUNC |
b099ab9f | 9701 | && htab->elf.dynamic_sections_created) |
411e1bfb | 9702 | { |
c152c796 | 9703 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
411e1bfb AM |
9704 | return FALSE; |
9705 | } | |
65f38f15 | 9706 | |
0c8d6e5c | 9707 | if (!is_ppc64_elf (gent->owner)) |
927be08e | 9708 | abort (); |
0ffa91dd | 9709 | |
927be08e | 9710 | allocate_got (h, info, gent); |
411e1bfb | 9711 | } |
65f38f15 | 9712 | |
8a2058b5 AM |
9713 | if (!htab->elf.dynamic_sections_created |
9714 | && h->type != STT_GNU_IFUNC) | |
9715 | eh->dyn_relocs = NULL; | |
9716 | ||
9717 | if (eh->dyn_relocs != NULL) | |
65f38f15 | 9718 | { |
8a2058b5 AM |
9719 | struct elf_dyn_relocs *p, **pp; |
9720 | ||
57e7d118 AM |
9721 | /* In the shared -Bsymbolic case, discard space allocated for |
9722 | dynamic pc-relative relocs against symbols which turn out to | |
9723 | be defined in regular objects. For the normal shared case, | |
9724 | discard space for relocs that have become local due to symbol | |
9725 | visibility changes. */ | |
9726 | ||
9727 | if (bfd_link_pic (info)) | |
65f38f15 | 9728 | { |
57e7d118 AM |
9729 | /* Relocs that use pc_count are those that appear on a call |
9730 | insn, or certain REL relocs (see must_be_dyn_reloc) that | |
9731 | can be generated via assembly. We want calls to | |
9732 | protected symbols to resolve directly to the function | |
9733 | rather than going via the plt. If people want function | |
9734 | pointer comparisons to work as expected then they should | |
9735 | avoid writing weird assembly. */ | |
9736 | if (SYMBOL_CALLS_LOCAL (info, h)) | |
9737 | { | |
57e7d118 AM |
9738 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) |
9739 | { | |
9740 | p->count -= p->pc_count; | |
9741 | p->pc_count = 0; | |
9742 | if (p->count == 0) | |
9743 | *pp = p->next; | |
9744 | else | |
9745 | pp = &p->next; | |
9746 | } | |
9747 | } | |
65f38f15 | 9748 | |
57e7d118 AM |
9749 | /* Also discard relocs on undefined weak syms with |
9750 | non-default visibility. */ | |
9751 | if (eh->dyn_relocs != NULL | |
9752 | && h->root.type == bfd_link_hash_undefweak) | |
5bd4f169 | 9753 | { |
57e7d118 AM |
9754 | if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) |
9755 | eh->dyn_relocs = NULL; | |
9756 | ||
9757 | /* Make sure this symbol is output as a dynamic symbol. | |
9758 | Undefined weak syms won't yet be marked as dynamic. */ | |
9759 | else if (h->dynindx == -1 | |
9760 | && !h->forced_local) | |
9761 | { | |
9762 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) | |
9763 | return FALSE; | |
9764 | } | |
5bd4f169 | 9765 | } |
65f38f15 | 9766 | } |
57e7d118 | 9767 | else if (h->type == STT_GNU_IFUNC) |
dfbb6ac9 | 9768 | { |
8a2058b5 AM |
9769 | /* A plt entry is always created when making direct calls to |
9770 | an ifunc, even when building a static executable, but | |
9771 | that doesn't cover all cases. We may have only an ifunc | |
9772 | initialised function pointer for a given ifunc symbol. | |
9773 | ||
9774 | For ELFv2, dynamic relocations are not required when | |
9775 | generating a global entry PLT stub. */ | |
9776 | if (abiversion (info->output_bfd) >= 2) | |
9777 | { | |
9778 | if (global_entry_stub (h)) | |
9779 | eh->dyn_relocs = NULL; | |
9780 | } | |
9781 | ||
9782 | /* For ELFv1 we have function descriptors. Descriptors need | |
9783 | to be treated like PLT entries and thus have dynamic | |
9784 | relocations. One exception is when the function | |
9785 | descriptor is copied into .dynbss (which should only | |
9786 | happen with ancient versions of gcc). */ | |
9787 | else if (h->needs_copy) | |
dfbb6ac9 | 9788 | eh->dyn_relocs = NULL; |
57e7d118 AM |
9789 | } |
9790 | else if (ELIMINATE_COPY_RELOCS) | |
9791 | { | |
8a2058b5 | 9792 | /* For the non-pic case, discard space for relocs against |
57e7d118 AM |
9793 | symbols which turn out to need copy relocs or are not |
9794 | dynamic. */ | |
dfbb6ac9 | 9795 | |
8a2058b5 AM |
9796 | /* First make sure this symbol is output as a dynamic symbol. |
9797 | Undefined weak syms won't yet be marked as dynamic. */ | |
9798 | if (h->root.type == bfd_link_hash_undefweak | |
9799 | && !h->non_got_ref | |
9800 | && !h->def_regular | |
9801 | && h->dynindx == -1 | |
9802 | && !h->forced_local | |
9803 | && !bfd_elf_link_record_dynamic_symbol (info, h)) | |
9804 | return FALSE; | |
57e7d118 | 9805 | |
8a2058b5 AM |
9806 | if (h->non_got_ref |
9807 | || h->def_regular | |
9808 | || h->dynindx == -1) | |
9809 | eh->dyn_relocs = NULL; | |
57e7d118 AM |
9810 | } |
9811 | ||
9812 | /* Finally, allocate space. */ | |
9813 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
9814 | { | |
9815 | asection *sreloc = elf_section_data (p->sec)->sreloc; | |
9816 | if (eh->elf.type == STT_GNU_IFUNC) | |
9817 | sreloc = htab->elf.irelplt; | |
9818 | sreloc->size += p->count * sizeof (Elf64_External_Rela); | |
dfbb6ac9 | 9819 | } |
65f38f15 | 9820 | } |
57e7d118 AM |
9821 | |
9822 | if ((htab->elf.dynamic_sections_created | |
9823 | && h->dynindx != -1 | |
9824 | && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, bfd_link_pic (info), h)) | |
9825 | || h->type == STT_GNU_IFUNC) | |
65f38f15 | 9826 | { |
57e7d118 AM |
9827 | struct plt_entry *pent; |
9828 | bfd_boolean doneone = FALSE; | |
9829 | for (pent = h->plt.plist; pent != NULL; pent = pent->next) | |
9830 | if (pent->plt.refcount > 0) | |
9831 | { | |
9832 | if (!htab->elf.dynamic_sections_created | |
9833 | || h->dynindx == -1) | |
9834 | { | |
9835 | s = htab->elf.iplt; | |
9836 | pent->plt.offset = s->size; | |
9837 | s->size += PLT_ENTRY_SIZE (htab); | |
9838 | s = htab->elf.irelplt; | |
9839 | } | |
9840 | else | |
9841 | { | |
9842 | /* If this is the first .plt entry, make room for the special | |
9843 | first entry. */ | |
9844 | s = htab->elf.splt; | |
9845 | if (s->size == 0) | |
9846 | s->size += PLT_INITIAL_ENTRY_SIZE (htab); | |
65f38f15 | 9847 | |
57e7d118 | 9848 | pent->plt.offset = s->size; |
65f38f15 | 9849 | |
57e7d118 AM |
9850 | /* Make room for this entry. */ |
9851 | s->size += PLT_ENTRY_SIZE (htab); | |
65f38f15 | 9852 | |
57e7d118 AM |
9853 | /* Make room for the .glink code. */ |
9854 | s = htab->glink; | |
9855 | if (s->size == 0) | |
9856 | s->size += GLINK_CALL_STUB_SIZE; | |
9857 | if (htab->opd_abi) | |
9858 | { | |
9859 | /* We need bigger stubs past index 32767. */ | |
9860 | if (s->size >= GLINK_CALL_STUB_SIZE + 32768*2*4) | |
9861 | s->size += 4; | |
9862 | s->size += 2*4; | |
9863 | } | |
9864 | else | |
9865 | s->size += 4; | |
65f38f15 | 9866 | |
57e7d118 AM |
9867 | /* We also need to make an entry in the .rela.plt section. */ |
9868 | s = htab->elf.srelplt; | |
9869 | } | |
9870 | s->size += sizeof (Elf64_External_Rela); | |
9871 | doneone = TRUE; | |
9872 | } | |
9873 | else | |
9874 | pent->plt.offset = (bfd_vma) -1; | |
9875 | if (!doneone) | |
9876 | { | |
9877 | h->plt.plist = NULL; | |
9878 | h->needs_plt = 0; | |
9879 | } | |
65f38f15 | 9880 | } |
57e7d118 | 9881 | else |
65f38f15 | 9882 | { |
57e7d118 AM |
9883 | h->plt.plist = NULL; |
9884 | h->needs_plt = 0; | |
65f38f15 AM |
9885 | } |
9886 | ||
b34976b6 | 9887 | return TRUE; |
65f38f15 AM |
9888 | } |
9889 | ||
a345bc8d AM |
9890 | /* Called via elf_link_hash_traverse from ppc64_elf_size_dynamic_sections |
9891 | to set up space for global entry stubs. These are put in glink, | |
9892 | after the branch table. */ | |
65f38f15 | 9893 | |
b34976b6 | 9894 | static bfd_boolean |
a345bc8d | 9895 | size_global_entry_stubs (struct elf_link_hash_entry *h, void *inf) |
65f38f15 | 9896 | { |
a345bc8d AM |
9897 | struct bfd_link_info *info; |
9898 | struct ppc_link_hash_table *htab; | |
9899 | struct plt_entry *pent; | |
9900 | asection *s; | |
65f38f15 | 9901 | |
a345bc8d AM |
9902 | if (h->root.type == bfd_link_hash_indirect) |
9903 | return TRUE; | |
65f38f15 | 9904 | |
a345bc8d AM |
9905 | if (!h->pointer_equality_needed) |
9906 | return TRUE; | |
65f38f15 | 9907 | |
a345bc8d AM |
9908 | if (h->def_regular) |
9909 | return TRUE; | |
65f38f15 | 9910 | |
a345bc8d AM |
9911 | info = inf; |
9912 | htab = ppc_hash_table (info); | |
9913 | if (htab == NULL) | |
9914 | return FALSE; | |
9915 | ||
9916 | s = htab->glink; | |
9917 | for (pent = h->plt.plist; pent != NULL; pent = pent->next) | |
9918 | if (pent->plt.offset != (bfd_vma) -1 | |
9919 | && pent->addend == 0) | |
9920 | { | |
afe397ea AM |
9921 | /* For ELFv2, if this symbol is not defined in a regular file |
9922 | and we are not generating a shared library or pie, then we | |
9923 | need to define the symbol in the executable on a call stub. | |
9924 | This is to avoid text relocations. */ | |
a345bc8d | 9925 | s->size = (s->size + 15) & -16; |
8a2058b5 | 9926 | h->root.type = bfd_link_hash_defined; |
afe397ea AM |
9927 | h->root.u.def.section = s; |
9928 | h->root.u.def.value = s->size; | |
a345bc8d AM |
9929 | s->size += 16; |
9930 | break; | |
9931 | } | |
9932 | return TRUE; | |
9933 | } | |
9934 | ||
9935 | /* Set DF_TEXTREL if we find any dynamic relocs that apply to | |
9936 | read-only sections. */ | |
9937 | ||
9938 | static bfd_boolean | |
9939 | maybe_set_textrel (struct elf_link_hash_entry *h, void *info) | |
9940 | { | |
9941 | if (h->root.type == bfd_link_hash_indirect) | |
9942 | return TRUE; | |
9943 | ||
9944 | if (readonly_dynrelocs (h)) | |
9945 | { | |
9946 | ((struct bfd_link_info *) info)->flags |= DF_TEXTREL; | |
9947 | ||
9948 | /* Not an error, just cut short the traversal. */ | |
9949 | return FALSE; | |
65f38f15 | 9950 | } |
b34976b6 | 9951 | return TRUE; |
65f38f15 AM |
9952 | } |
9953 | ||
9954 | /* Set the sizes of the dynamic sections. */ | |
9955 | ||
b34976b6 | 9956 | static bfd_boolean |
ee67d69a | 9957 | ppc64_elf_size_dynamic_sections (bfd *output_bfd, |
4ce794b7 | 9958 | struct bfd_link_info *info) |
65f38f15 AM |
9959 | { |
9960 | struct ppc_link_hash_table *htab; | |
9961 | bfd *dynobj; | |
9962 | asection *s; | |
b34976b6 | 9963 | bfd_boolean relocs; |
65f38f15 | 9964 | bfd *ibfd; |
7865406b | 9965 | struct got_entry *first_tlsld; |
65f38f15 AM |
9966 | |
9967 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
9968 | if (htab == NULL) |
9969 | return FALSE; | |
9970 | ||
65f38f15 AM |
9971 | dynobj = htab->elf.dynobj; |
9972 | if (dynobj == NULL) | |
9973 | abort (); | |
9974 | ||
9975 | if (htab->elf.dynamic_sections_created) | |
9976 | { | |
9977 | /* Set the contents of the .interp section to the interpreter. */ | |
9b8b325a | 9978 | if (bfd_link_executable (info) && !info->nointerp) |
65f38f15 | 9979 | { |
3d4d4302 | 9980 | s = bfd_get_linker_section (dynobj, ".interp"); |
65f38f15 AM |
9981 | if (s == NULL) |
9982 | abort (); | |
eea6121a | 9983 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; |
65f38f15 AM |
9984 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; |
9985 | } | |
9986 | } | |
9987 | ||
9988 | /* Set up .got offsets for local syms, and space for local dynamic | |
9989 | relocs. */ | |
c72f2fb2 | 9990 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
65f38f15 | 9991 | { |
411e1bfb AM |
9992 | struct got_entry **lgot_ents; |
9993 | struct got_entry **end_lgot_ents; | |
e054468f AM |
9994 | struct plt_entry **local_plt; |
9995 | struct plt_entry **end_local_plt; | |
f961d9dd | 9996 | unsigned char *lgot_masks; |
65f38f15 AM |
9997 | bfd_size_type locsymcount; |
9998 | Elf_Internal_Shdr *symtab_hdr; | |
65f38f15 | 9999 | |
0c8d6e5c | 10000 | if (!is_ppc64_elf (ibfd)) |
65f38f15 AM |
10001 | continue; |
10002 | ||
10003 | for (s = ibfd->sections; s != NULL; s = s->next) | |
10004 | { | |
19e08130 | 10005 | struct ppc_dyn_relocs *p; |
65f38f15 | 10006 | |
6edfbbad | 10007 | for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next) |
65f38f15 | 10008 | { |
ec338859 AM |
10009 | if (!bfd_is_abs_section (p->sec) |
10010 | && bfd_is_abs_section (p->sec->output_section)) | |
10011 | { | |
10012 | /* Input section has been discarded, either because | |
10013 | it is a copy of a linkonce section or due to | |
10014 | linker script /DISCARD/, so we'll be discarding | |
10015 | the relocs too. */ | |
10016 | } | |
248866a8 | 10017 | else if (p->count != 0) |
ec338859 | 10018 | { |
19e08130 AM |
10019 | asection *srel = elf_section_data (p->sec)->sreloc; |
10020 | if (p->ifunc) | |
33e44f2e | 10021 | srel = htab->elf.irelplt; |
eea6121a | 10022 | srel->size += p->count * sizeof (Elf64_External_Rela); |
248866a8 AM |
10023 | if ((p->sec->output_section->flags & SEC_READONLY) != 0) |
10024 | info->flags |= DF_TEXTREL; | |
ec338859 | 10025 | } |
65f38f15 AM |
10026 | } |
10027 | } | |
10028 | ||
411e1bfb AM |
10029 | lgot_ents = elf_local_got_ents (ibfd); |
10030 | if (!lgot_ents) | |
65f38f15 AM |
10031 | continue; |
10032 | ||
0ffa91dd | 10033 | symtab_hdr = &elf_symtab_hdr (ibfd); |
65f38f15 | 10034 | locsymcount = symtab_hdr->sh_info; |
411e1bfb | 10035 | end_lgot_ents = lgot_ents + locsymcount; |
e054468f AM |
10036 | local_plt = (struct plt_entry **) end_lgot_ents; |
10037 | end_local_plt = local_plt + locsymcount; | |
f961d9dd | 10038 | lgot_masks = (unsigned char *) end_local_plt; |
e717da7e | 10039 | s = ppc64_elf_tdata (ibfd)->got; |
e7b938ca | 10040 | for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks) |
65f38f15 | 10041 | { |
0b8bcf0d | 10042 | struct got_entry **pent, *ent; |
411e1bfb | 10043 | |
0b8bcf0d AM |
10044 | pent = lgot_ents; |
10045 | while ((ent = *pent) != NULL) | |
411e1bfb AM |
10046 | if (ent->got.refcount > 0) |
10047 | { | |
e7b938ca | 10048 | if ((ent->tls_type & *lgot_masks & TLS_LD) != 0) |
411e1bfb | 10049 | { |
927be08e | 10050 | ppc64_tlsld_got (ibfd)->got.refcount += 1; |
0b8bcf0d | 10051 | *pent = ent->next; |
411e1bfb AM |
10052 | } |
10053 | else | |
10054 | { | |
19e08130 AM |
10055 | unsigned int ent_size = 8; |
10056 | unsigned int rel_size = sizeof (Elf64_External_Rela); | |
10057 | ||
eea6121a | 10058 | ent->got.offset = s->size; |
e7b938ca | 10059 | if ((ent->tls_type & *lgot_masks & TLS_GD) != 0) |
927be08e | 10060 | { |
19e08130 AM |
10061 | ent_size *= 2; |
10062 | rel_size *= 2; | |
10063 | } | |
10064 | s->size += ent_size; | |
10065 | if ((*lgot_masks & PLT_IFUNC) != 0) | |
10066 | { | |
33e44f2e | 10067 | htab->elf.irelplt->size += rel_size; |
19e08130 AM |
10068 | htab->got_reli_size += rel_size; |
10069 | } | |
0e1862bb | 10070 | else if (bfd_link_pic (info)) |
19e08130 AM |
10071 | { |
10072 | asection *srel = ppc64_elf_tdata (ibfd)->relgot; | |
10073 | srel->size += rel_size; | |
927be08e | 10074 | } |
0b8bcf0d | 10075 | pent = &ent->next; |
411e1bfb AM |
10076 | } |
10077 | } | |
10078 | else | |
0b8bcf0d | 10079 | *pent = ent->next; |
65f38f15 | 10080 | } |
e054468f AM |
10081 | |
10082 | /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */ | |
10083 | for (; local_plt < end_local_plt; ++local_plt) | |
10084 | { | |
10085 | struct plt_entry *ent; | |
10086 | ||
10087 | for (ent = *local_plt; ent != NULL; ent = ent->next) | |
10088 | if (ent->plt.refcount > 0) | |
10089 | { | |
33e44f2e | 10090 | s = htab->elf.iplt; |
e054468f | 10091 | ent->plt.offset = s->size; |
b9e5796b | 10092 | s->size += PLT_ENTRY_SIZE (htab); |
e054468f | 10093 | |
33e44f2e | 10094 | htab->elf.irelplt->size += sizeof (Elf64_External_Rela); |
e054468f AM |
10095 | } |
10096 | else | |
10097 | ent->plt.offset = (bfd_vma) -1; | |
10098 | } | |
65f38f15 AM |
10099 | } |
10100 | ||
10101 | /* Allocate global sym .plt and .got entries, and space for global | |
10102 | sym dynamic relocs. */ | |
4ce794b7 | 10103 | elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info); |
a345bc8d AM |
10104 | /* Stash the end of glink branch table. */ |
10105 | if (htab->glink != NULL) | |
10106 | htab->glink->rawsize = htab->glink->size; | |
10107 | ||
0e1862bb | 10108 | if (!htab->opd_abi && !bfd_link_pic (info)) |
a345bc8d | 10109 | elf_link_hash_traverse (&htab->elf, size_global_entry_stubs, info); |
65f38f15 | 10110 | |
7865406b | 10111 | first_tlsld = NULL; |
c72f2fb2 | 10112 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
102890f0 | 10113 | { |
7865406b AM |
10114 | struct got_entry *ent; |
10115 | ||
0c8d6e5c | 10116 | if (!is_ppc64_elf (ibfd)) |
102890f0 AM |
10117 | continue; |
10118 | ||
7865406b AM |
10119 | ent = ppc64_tlsld_got (ibfd); |
10120 | if (ent->got.refcount > 0) | |
102890f0 | 10121 | { |
7865406b | 10122 | if (!htab->do_multi_toc && first_tlsld != NULL) |
102890f0 | 10123 | { |
7865406b AM |
10124 | ent->is_indirect = TRUE; |
10125 | ent->got.ent = first_tlsld; | |
10126 | } | |
10127 | else | |
10128 | { | |
10129 | if (first_tlsld == NULL) | |
10130 | first_tlsld = ent; | |
10131 | s = ppc64_elf_tdata (ibfd)->got; | |
10132 | ent->got.offset = s->size; | |
10133 | ent->owner = ibfd; | |
10134 | s->size += 16; | |
0e1862bb | 10135 | if (bfd_link_pic (info)) |
7865406b AM |
10136 | { |
10137 | asection *srel = ppc64_elf_tdata (ibfd)->relgot; | |
10138 | srel->size += sizeof (Elf64_External_Rela); | |
10139 | } | |
102890f0 AM |
10140 | } |
10141 | } | |
10142 | else | |
7865406b | 10143 | ent->got.offset = (bfd_vma) -1; |
102890f0 AM |
10144 | } |
10145 | ||
65f38f15 AM |
10146 | /* We now have determined the sizes of the various dynamic sections. |
10147 | Allocate memory for them. */ | |
b34976b6 | 10148 | relocs = FALSE; |
65f38f15 AM |
10149 | for (s = dynobj->sections; s != NULL; s = s->next) |
10150 | { | |
10151 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
10152 | continue; | |
10153 | ||
4ce794b7 | 10154 | if (s == htab->brlt || s == htab->relbrlt) |
721956f4 AM |
10155 | /* These haven't been allocated yet; don't strip. */ |
10156 | continue; | |
33e44f2e AM |
10157 | else if (s == htab->elf.sgot |
10158 | || s == htab->elf.splt | |
10159 | || s == htab->elf.iplt | |
c456f082 AM |
10160 | || s == htab->glink |
10161 | || s == htab->dynbss) | |
65f38f15 AM |
10162 | { |
10163 | /* Strip this section if we don't need it; see the | |
10164 | comment below. */ | |
5bd4f169 | 10165 | } |
58d180e8 AM |
10166 | else if (s == htab->glink_eh_frame) |
10167 | { | |
10168 | if (!bfd_is_abs_section (s->output_section)) | |
10169 | /* Not sized yet. */ | |
10170 | continue; | |
10171 | } | |
70cc837d | 10172 | else if (CONST_STRNEQ (s->name, ".rela")) |
5bd4f169 | 10173 | { |
c456f082 | 10174 | if (s->size != 0) |
5bd4f169 | 10175 | { |
33e44f2e | 10176 | if (s != htab->elf.srelplt) |
b34976b6 | 10177 | relocs = TRUE; |
5bd4f169 AM |
10178 | |
10179 | /* We use the reloc_count field as a counter if we need | |
10180 | to copy relocs into the output file. */ | |
10181 | s->reloc_count = 0; | |
10182 | } | |
10183 | } | |
65f38f15 | 10184 | else |
5bd4f169 AM |
10185 | { |
10186 | /* It's not one of our sections, so don't allocate space. */ | |
10187 | continue; | |
10188 | } | |
10189 | ||
eea6121a | 10190 | if (s->size == 0) |
5bd4f169 | 10191 | { |
c456f082 AM |
10192 | /* If we don't need this section, strip it from the |
10193 | output file. This is mostly to handle .rela.bss and | |
10194 | .rela.plt. We must create both sections in | |
10195 | create_dynamic_sections, because they must be created | |
10196 | before the linker maps input sections to output | |
10197 | sections. The linker does that before | |
10198 | adjust_dynamic_symbol is called, and it is that | |
10199 | function which decides whether anything needs to go | |
10200 | into these sections. */ | |
8423293d | 10201 | s->flags |= SEC_EXCLUDE; |
5bd4f169 AM |
10202 | continue; |
10203 | } | |
10204 | ||
c456f082 | 10205 | if ((s->flags & SEC_HAS_CONTENTS) == 0) |
5f333394 AM |
10206 | continue; |
10207 | ||
65f38f15 AM |
10208 | /* Allocate memory for the section contents. We use bfd_zalloc |
10209 | here in case unused entries are not reclaimed before the | |
10210 | section's contents are written out. This should not happen, | |
411e1bfb AM |
10211 | but this way if it does we get a R_PPC64_NONE reloc in .rela |
10212 | sections instead of garbage. | |
10213 | We also rely on the section contents being zero when writing | |
10214 | the GOT. */ | |
eea6121a | 10215 | s->contents = bfd_zalloc (dynobj, s->size); |
65f38f15 | 10216 | if (s->contents == NULL) |
b34976b6 | 10217 | return FALSE; |
5bd4f169 AM |
10218 | } |
10219 | ||
c72f2fb2 | 10220 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
e717da7e | 10221 | { |
0c8d6e5c | 10222 | if (!is_ppc64_elf (ibfd)) |
7b53ace3 AM |
10223 | continue; |
10224 | ||
e717da7e | 10225 | s = ppc64_elf_tdata (ibfd)->got; |
33e44f2e | 10226 | if (s != NULL && s != htab->elf.sgot) |
e717da7e | 10227 | { |
eea6121a | 10228 | if (s->size == 0) |
8423293d | 10229 | s->flags |= SEC_EXCLUDE; |
e717da7e AM |
10230 | else |
10231 | { | |
eea6121a | 10232 | s->contents = bfd_zalloc (ibfd, s->size); |
e717da7e AM |
10233 | if (s->contents == NULL) |
10234 | return FALSE; | |
10235 | } | |
10236 | } | |
10237 | s = ppc64_elf_tdata (ibfd)->relgot; | |
10238 | if (s != NULL) | |
10239 | { | |
eea6121a | 10240 | if (s->size == 0) |
8423293d | 10241 | s->flags |= SEC_EXCLUDE; |
e717da7e AM |
10242 | else |
10243 | { | |
eea6121a | 10244 | s->contents = bfd_zalloc (ibfd, s->size); |
e717da7e AM |
10245 | if (s->contents == NULL) |
10246 | return FALSE; | |
10247 | relocs = TRUE; | |
10248 | s->reloc_count = 0; | |
10249 | } | |
10250 | } | |
10251 | } | |
10252 | ||
e86ce104 | 10253 | if (htab->elf.dynamic_sections_created) |
5bd4f169 | 10254 | { |
e8910a83 AM |
10255 | bfd_boolean tls_opt; |
10256 | ||
5bd4f169 AM |
10257 | /* Add some entries to the .dynamic section. We fill in the |
10258 | values later, in ppc64_elf_finish_dynamic_sections, but we | |
10259 | must add the entries now so that we get the correct size for | |
10260 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
10261 | dynamic linker and used by the debugger. */ | |
dc810e39 | 10262 | #define add_dynamic_entry(TAG, VAL) \ |
5a580b3a | 10263 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) |
dc810e39 | 10264 | |
0e1862bb | 10265 | if (bfd_link_executable (info)) |
5bd4f169 | 10266 | { |
dc810e39 | 10267 | if (!add_dynamic_entry (DT_DEBUG, 0)) |
b34976b6 | 10268 | return FALSE; |
5bd4f169 AM |
10269 | } |
10270 | ||
33e44f2e | 10271 | if (htab->elf.splt != NULL && htab->elf.splt->size != 0) |
5bd4f169 | 10272 | { |
dc810e39 AM |
10273 | if (!add_dynamic_entry (DT_PLTGOT, 0) |
10274 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
10275 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
5d1634d7 AM |
10276 | || !add_dynamic_entry (DT_JMPREL, 0) |
10277 | || !add_dynamic_entry (DT_PPC64_GLINK, 0)) | |
b34976b6 | 10278 | return FALSE; |
5bd4f169 AM |
10279 | } |
10280 | ||
ee67d69a | 10281 | if (NO_OPD_RELOCS && abiversion (output_bfd) <= 1) |
19397422 AM |
10282 | { |
10283 | if (!add_dynamic_entry (DT_PPC64_OPD, 0) | |
10284 | || !add_dynamic_entry (DT_PPC64_OPDSZ, 0)) | |
b34976b6 | 10285 | return FALSE; |
19397422 AM |
10286 | } |
10287 | ||
7c9cf415 | 10288 | tls_opt = (htab->params->tls_get_addr_opt |
e8910a83 AM |
10289 | && htab->tls_get_addr_fd != NULL |
10290 | && htab->tls_get_addr_fd->elf.plt.plist != NULL); | |
10291 | if (tls_opt || !htab->opd_abi) | |
10292 | { | |
10293 | if (!add_dynamic_entry (DT_PPC64_OPT, tls_opt ? PPC64_OPT_TLS : 0)) | |
10294 | return FALSE; | |
10295 | } | |
a7f2871e | 10296 | |
5bd4f169 AM |
10297 | if (relocs) |
10298 | { | |
dc810e39 AM |
10299 | if (!add_dynamic_entry (DT_RELA, 0) |
10300 | || !add_dynamic_entry (DT_RELASZ, 0) | |
10301 | || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela))) | |
b34976b6 | 10302 | return FALSE; |
5bd4f169 | 10303 | |
65f38f15 AM |
10304 | /* If any dynamic relocs apply to a read-only section, |
10305 | then we need a DT_TEXTREL entry. */ | |
248866a8 | 10306 | if ((info->flags & DF_TEXTREL) == 0) |
a345bc8d | 10307 | elf_link_hash_traverse (&htab->elf, maybe_set_textrel, info); |
5bd4f169 | 10308 | |
65f38f15 | 10309 | if ((info->flags & DF_TEXTREL) != 0) |
5bd4f169 | 10310 | { |
65f38f15 | 10311 | if (!add_dynamic_entry (DT_TEXTREL, 0)) |
b34976b6 | 10312 | return FALSE; |
5bd4f169 | 10313 | } |
5bd4f169 | 10314 | } |
5bd4f169 | 10315 | } |
65f38f15 | 10316 | #undef add_dynamic_entry |
5bd4f169 | 10317 | |
b34976b6 | 10318 | return TRUE; |
5bd4f169 AM |
10319 | } |
10320 | ||
a345bc8d AM |
10321 | /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */ |
10322 | ||
10323 | static bfd_boolean | |
10324 | ppc64_elf_hash_symbol (struct elf_link_hash_entry *h) | |
10325 | { | |
10326 | if (h->plt.plist != NULL | |
10327 | && !h->def_regular | |
10328 | && !h->pointer_equality_needed) | |
10329 | return FALSE; | |
10330 | ||
10331 | return _bfd_elf_hash_symbol (h); | |
10332 | } | |
10333 | ||
721956f4 | 10334 | /* Determine the type of stub needed, if any, for a call. */ |
5bd4f169 | 10335 | |
4ce794b7 AM |
10336 | static inline enum ppc_stub_type |
10337 | ppc_type_of_stub (asection *input_sec, | |
10338 | const Elf_Internal_Rela *rel, | |
10339 | struct ppc_link_hash_entry **hash, | |
e054468f | 10340 | struct plt_entry **plt_ent, |
6911b7dc AM |
10341 | bfd_vma destination, |
10342 | unsigned long local_off) | |
5bd4f169 | 10343 | { |
721956f4 AM |
10344 | struct ppc_link_hash_entry *h = *hash; |
10345 | bfd_vma location; | |
10346 | bfd_vma branch_offset; | |
10347 | bfd_vma max_branch_offset; | |
4ce794b7 | 10348 | enum elf_ppc64_reloc_type r_type; |
5bd4f169 | 10349 | |
721956f4 AM |
10350 | if (h != NULL) |
10351 | { | |
e054468f | 10352 | struct plt_entry *ent; |
7fe2b9a6 | 10353 | struct ppc_link_hash_entry *fdh = h; |
b31867b6 AM |
10354 | if (h->oh != NULL |
10355 | && h->oh->is_func_descriptor) | |
7b8f6675 AM |
10356 | { |
10357 | fdh = ppc_follow_link (h->oh); | |
10358 | *hash = fdh; | |
10359 | } | |
8387904d | 10360 | |
e054468f AM |
10361 | for (ent = fdh->elf.plt.plist; ent != NULL; ent = ent->next) |
10362 | if (ent->addend == rel->r_addend | |
10363 | && ent->plt.offset != (bfd_vma) -1) | |
10364 | { | |
e054468f AM |
10365 | *plt_ent = ent; |
10366 | return ppc_stub_plt_call; | |
10367 | } | |
5bd4f169 | 10368 | |
7fe2b9a6 AM |
10369 | /* Here, we know we don't have a plt entry. If we don't have a |
10370 | either a defined function descriptor or a defined entry symbol | |
10371 | in a regular object file, then it is pointless trying to make | |
10372 | any other type of stub. */ | |
854b41e7 AM |
10373 | if (!is_static_defined (&fdh->elf) |
10374 | && !is_static_defined (&h->elf)) | |
721956f4 | 10375 | return ppc_stub_none; |
5d1634d7 | 10376 | } |
e054468f AM |
10377 | else if (elf_local_got_ents (input_sec->owner) != NULL) |
10378 | { | |
10379 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (input_sec->owner); | |
10380 | struct plt_entry **local_plt = (struct plt_entry **) | |
10381 | elf_local_got_ents (input_sec->owner) + symtab_hdr->sh_info; | |
10382 | unsigned long r_symndx = ELF64_R_SYM (rel->r_info); | |
10383 | ||
10384 | if (local_plt[r_symndx] != NULL) | |
10385 | { | |
10386 | struct plt_entry *ent; | |
10387 | ||
10388 | for (ent = local_plt[r_symndx]; ent != NULL; ent = ent->next) | |
10389 | if (ent->addend == rel->r_addend | |
10390 | && ent->plt.offset != (bfd_vma) -1) | |
10391 | { | |
10392 | *plt_ent = ent; | |
10393 | return ppc_stub_plt_call; | |
10394 | } | |
10395 | } | |
10396 | } | |
5d1634d7 | 10397 | |
721956f4 AM |
10398 | /* Determine where the call point is. */ |
10399 | location = (input_sec->output_offset | |
10400 | + input_sec->output_section->vma | |
10401 | + rel->r_offset); | |
5d1634d7 | 10402 | |
721956f4 AM |
10403 | branch_offset = destination - location; |
10404 | r_type = ELF64_R_TYPE (rel->r_info); | |
5d1634d7 | 10405 | |
721956f4 AM |
10406 | /* Determine if a long branch stub is needed. */ |
10407 | max_branch_offset = 1 << 25; | |
4ce794b7 | 10408 | if (r_type != R_PPC64_REL24) |
721956f4 | 10409 | max_branch_offset = 1 << 15; |
5d1634d7 | 10410 | |
6911b7dc | 10411 | if (branch_offset + max_branch_offset >= 2 * max_branch_offset - local_off) |
721956f4 AM |
10412 | /* We need a stub. Figure out whether a long_branch or plt_branch |
10413 | is needed later. */ | |
10414 | return ppc_stub_long_branch; | |
5d1634d7 | 10415 | |
721956f4 | 10416 | return ppc_stub_none; |
5d1634d7 AM |
10417 | } |
10418 | ||
794e51c0 AM |
10419 | /* With power7 weakly ordered memory model, it is possible for ld.so |
10420 | to update a plt entry in one thread and have another thread see a | |
10421 | stale zero toc entry. To avoid this we need some sort of acquire | |
10422 | barrier in the call stub. One solution is to make the load of the | |
10423 | toc word seem to appear to depend on the load of the function entry | |
10424 | word. Another solution is to test for r2 being zero, and branch to | |
10425 | the appropriate glink entry if so. | |
10426 | ||
10427 | . fake dep barrier compare | |
71a39c98 AM |
10428 | . ld 12,xxx(2) ld 12,xxx(2) |
10429 | . mtctr 12 mtctr 12 | |
10430 | . xor 11,12,12 ld 2,xxx+8(2) | |
794e51c0 AM |
10431 | . add 2,2,11 cmpldi 2,0 |
10432 | . ld 2,xxx+8(2) bnectr+ | |
10433 | . bctr b <glink_entry> | |
10434 | ||
10435 | The solution involving the compare turns out to be faster, so | |
10436 | that's what we use unless the branch won't reach. */ | |
10437 | ||
10438 | #define ALWAYS_USE_FAKE_DEP 0 | |
10439 | #define ALWAYS_EMIT_R2SAVE 0 | |
5d1634d7 | 10440 | |
5d1634d7 AM |
10441 | #define PPC_LO(v) ((v) & 0xffff) |
10442 | #define PPC_HI(v) (((v) >> 16) & 0xffff) | |
10443 | #define PPC_HA(v) PPC_HI ((v) + 0x8000) | |
10444 | ||
794e51c0 AM |
10445 | static inline unsigned int |
10446 | plt_stub_size (struct ppc_link_hash_table *htab, | |
10447 | struct ppc_stub_hash_entry *stub_entry, | |
10448 | bfd_vma off) | |
10449 | { | |
b9e5796b AM |
10450 | unsigned size = 12; |
10451 | ||
10452 | if (ALWAYS_EMIT_R2SAVE | |
10453 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
10454 | size += 4; | |
10455 | if (PPC_HA (off) != 0) | |
794e51c0 | 10456 | size += 4; |
b9e5796b AM |
10457 | if (htab->opd_abi) |
10458 | { | |
10459 | size += 4; | |
e7d1c40c | 10460 | if (htab->params->plt_static_chain) |
b9e5796b | 10461 | size += 4; |
bd4d2eaa AM |
10462 | if (htab->params->plt_thread_safe |
10463 | && htab->elf.dynamic_sections_created | |
10464 | && stub_entry->h != NULL | |
10465 | && stub_entry->h->elf.dynindx != -1) | |
b9e5796b | 10466 | size += 8; |
e7d1c40c | 10467 | if (PPC_HA (off + 8 + 8 * htab->params->plt_static_chain) != PPC_HA (off)) |
b9e5796b AM |
10468 | size += 4; |
10469 | } | |
794e51c0 AM |
10470 | if (stub_entry->h != NULL |
10471 | && (stub_entry->h == htab->tls_get_addr_fd | |
10472 | || stub_entry->h == htab->tls_get_addr) | |
7c9cf415 | 10473 | && htab->params->tls_get_addr_opt) |
794e51c0 AM |
10474 | size += 13 * 4; |
10475 | return size; | |
10476 | } | |
10477 | ||
10478 | /* If this stub would cross fewer 2**plt_stub_align boundaries if we align, | |
10479 | then return the padding needed to do so. */ | |
10480 | static inline unsigned int | |
10481 | plt_stub_pad (struct ppc_link_hash_table *htab, | |
10482 | struct ppc_stub_hash_entry *stub_entry, | |
10483 | bfd_vma plt_off) | |
10484 | { | |
e7d1c40c | 10485 | int stub_align = 1 << htab->params->plt_stub_align; |
794e51c0 | 10486 | unsigned stub_size = plt_stub_size (htab, stub_entry, plt_off); |
6f20ed8a | 10487 | bfd_vma stub_off = stub_entry->group->stub_sec->size; |
794e51c0 AM |
10488 | |
10489 | if (((stub_off + stub_size - 1) & -stub_align) - (stub_off & -stub_align) | |
e05fa0ba | 10490 | > ((stub_size - 1) & -stub_align)) |
794e51c0 AM |
10491 | return stub_align - (stub_off & (stub_align - 1)); |
10492 | return 0; | |
10493 | } | |
10494 | ||
10495 | /* Build a .plt call stub. */ | |
10496 | ||
10497 | static inline bfd_byte * | |
10498 | build_plt_stub (struct ppc_link_hash_table *htab, | |
10499 | struct ppc_stub_hash_entry *stub_entry, | |
10500 | bfd_byte *p, bfd_vma offset, Elf_Internal_Rela *r) | |
10501 | { | |
e7d1c40c | 10502 | bfd *obfd = htab->params->stub_bfd; |
b9e5796b | 10503 | bfd_boolean plt_load_toc = htab->opd_abi; |
e7d1c40c | 10504 | bfd_boolean plt_static_chain = htab->params->plt_static_chain; |
bd4d2eaa AM |
10505 | bfd_boolean plt_thread_safe = (htab->params->plt_thread_safe |
10506 | && htab->elf.dynamic_sections_created | |
10507 | && stub_entry->h != NULL | |
10508 | && stub_entry->h->elf.dynindx != -1); | |
794e51c0 AM |
10509 | bfd_boolean use_fake_dep = plt_thread_safe; |
10510 | bfd_vma cmp_branch_off = 0; | |
10511 | ||
10512 | if (!ALWAYS_USE_FAKE_DEP | |
b9e5796b | 10513 | && plt_load_toc |
794e51c0 | 10514 | && plt_thread_safe |
bd4d2eaa AM |
10515 | && !((stub_entry->h == htab->tls_get_addr_fd |
10516 | || stub_entry->h == htab->tls_get_addr) | |
7c9cf415 | 10517 | && htab->params->tls_get_addr_opt)) |
794e51c0 AM |
10518 | { |
10519 | bfd_vma pltoff = stub_entry->plt_ent->plt.offset & ~1; | |
b9e5796b AM |
10520 | bfd_vma pltindex = ((pltoff - PLT_INITIAL_ENTRY_SIZE (htab)) |
10521 | / PLT_ENTRY_SIZE (htab)); | |
794e51c0 AM |
10522 | bfd_vma glinkoff = GLINK_CALL_STUB_SIZE + pltindex * 8; |
10523 | bfd_vma to, from; | |
10524 | ||
68d62958 AM |
10525 | if (pltindex > 32768) |
10526 | glinkoff += (pltindex - 32768) * 4; | |
794e51c0 AM |
10527 | to = (glinkoff |
10528 | + htab->glink->output_offset | |
10529 | + htab->glink->output_section->vma); | |
6f20ed8a | 10530 | from = (p - stub_entry->group->stub_sec->contents |
794e51c0 AM |
10531 | + 4 * (ALWAYS_EMIT_R2SAVE |
10532 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
10533 | + 4 * (PPC_HA (offset) != 0) | |
10534 | + 4 * (PPC_HA (offset + 8 + 8 * plt_static_chain) | |
10535 | != PPC_HA (offset)) | |
10536 | + 4 * (plt_static_chain != 0) | |
10537 | + 20 | |
6f20ed8a AM |
10538 | + stub_entry->group->stub_sec->output_offset |
10539 | + stub_entry->group->stub_sec->output_section->vma); | |
794e51c0 AM |
10540 | cmp_branch_off = to - from; |
10541 | use_fake_dep = cmp_branch_off + (1 << 25) >= (1 << 26); | |
10542 | } | |
10543 | ||
ac2df442 AM |
10544 | if (PPC_HA (offset) != 0) |
10545 | { | |
176a0d42 AM |
10546 | if (r != NULL) |
10547 | { | |
794e51c0 AM |
10548 | if (ALWAYS_EMIT_R2SAVE |
10549 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
10550 | r[0].r_offset += 4; | |
176a0d42 | 10551 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA); |
3b421ab3 | 10552 | r[1].r_offset = r[0].r_offset + 4; |
176a0d42 AM |
10553 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); |
10554 | r[1].r_addend = r[0].r_addend; | |
b9e5796b | 10555 | if (plt_load_toc) |
176a0d42 | 10556 | { |
b9e5796b | 10557 | if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset)) |
c7131b65 | 10558 | { |
b9e5796b AM |
10559 | r[2].r_offset = r[1].r_offset + 4; |
10560 | r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO); | |
10561 | r[2].r_addend = r[0].r_addend; | |
10562 | } | |
10563 | else | |
10564 | { | |
10565 | r[2].r_offset = r[1].r_offset + 8 + 8 * use_fake_dep; | |
10566 | r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); | |
10567 | r[2].r_addend = r[0].r_addend + 8; | |
10568 | if (plt_static_chain) | |
10569 | { | |
10570 | r[3].r_offset = r[2].r_offset + 4; | |
10571 | r[3].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); | |
10572 | r[3].r_addend = r[0].r_addend + 16; | |
10573 | } | |
c7131b65 | 10574 | } |
176a0d42 AM |
10575 | } |
10576 | } | |
794e51c0 AM |
10577 | if (ALWAYS_EMIT_R2SAVE |
10578 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
a078d95a | 10579 | bfd_put_32 (obfd, STD_R2_0R1 + STK_TOC (htab), p), p += 4; |
397998fc AM |
10580 | if (plt_load_toc) |
10581 | { | |
10582 | bfd_put_32 (obfd, ADDIS_R11_R2 | PPC_HA (offset), p), p += 4; | |
10583 | bfd_put_32 (obfd, LD_R12_0R11 | PPC_LO (offset), p), p += 4; | |
10584 | } | |
10585 | else | |
10586 | { | |
10587 | bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (offset), p), p += 4; | |
10588 | bfd_put_32 (obfd, LD_R12_0R12 | PPC_LO (offset), p), p += 4; | |
10589 | } | |
b9e5796b AM |
10590 | if (plt_load_toc |
10591 | && PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset)) | |
ac2df442 | 10592 | { |
71a39c98 | 10593 | bfd_put_32 (obfd, ADDI_R11_R11 | PPC_LO (offset), p), p += 4; |
ac2df442 AM |
10594 | offset = 0; |
10595 | } | |
71a39c98 | 10596 | bfd_put_32 (obfd, MTCTR_R12, p), p += 4; |
b9e5796b | 10597 | if (plt_load_toc) |
794e51c0 | 10598 | { |
b9e5796b AM |
10599 | if (use_fake_dep) |
10600 | { | |
10601 | bfd_put_32 (obfd, XOR_R2_R12_R12, p), p += 4; | |
10602 | bfd_put_32 (obfd, ADD_R11_R11_R2, p), p += 4; | |
10603 | } | |
10604 | bfd_put_32 (obfd, LD_R2_0R11 | PPC_LO (offset + 8), p), p += 4; | |
10605 | if (plt_static_chain) | |
10606 | bfd_put_32 (obfd, LD_R11_0R11 | PPC_LO (offset + 16), p), p += 4; | |
794e51c0 | 10607 | } |
ac2df442 AM |
10608 | } |
10609 | else | |
10610 | { | |
176a0d42 AM |
10611 | if (r != NULL) |
10612 | { | |
794e51c0 AM |
10613 | if (ALWAYS_EMIT_R2SAVE |
10614 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
10615 | r[0].r_offset += 4; | |
176a0d42 | 10616 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); |
b9e5796b | 10617 | if (plt_load_toc) |
176a0d42 | 10618 | { |
b9e5796b | 10619 | if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset)) |
c7131b65 | 10620 | { |
b9e5796b AM |
10621 | r[1].r_offset = r[0].r_offset + 4; |
10622 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16); | |
10623 | r[1].r_addend = r[0].r_addend; | |
10624 | } | |
10625 | else | |
10626 | { | |
10627 | r[1].r_offset = r[0].r_offset + 8 + 8 * use_fake_dep; | |
10628 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); | |
10629 | r[1].r_addend = r[0].r_addend + 8 + 8 * plt_static_chain; | |
10630 | if (plt_static_chain) | |
10631 | { | |
10632 | r[2].r_offset = r[1].r_offset + 4; | |
10633 | r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); | |
10634 | r[2].r_addend = r[0].r_addend + 8; | |
10635 | } | |
c7131b65 | 10636 | } |
176a0d42 AM |
10637 | } |
10638 | } | |
794e51c0 AM |
10639 | if (ALWAYS_EMIT_R2SAVE |
10640 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
a078d95a | 10641 | bfd_put_32 (obfd, STD_R2_0R1 + STK_TOC (htab), p), p += 4; |
71a39c98 | 10642 | bfd_put_32 (obfd, LD_R12_0R2 | PPC_LO (offset), p), p += 4; |
b9e5796b AM |
10643 | if (plt_load_toc |
10644 | && PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset)) | |
ac2df442 AM |
10645 | { |
10646 | bfd_put_32 (obfd, ADDI_R2_R2 | PPC_LO (offset), p), p += 4; | |
10647 | offset = 0; | |
10648 | } | |
71a39c98 | 10649 | bfd_put_32 (obfd, MTCTR_R12, p), p += 4; |
b9e5796b | 10650 | if (plt_load_toc) |
794e51c0 | 10651 | { |
b9e5796b AM |
10652 | if (use_fake_dep) |
10653 | { | |
10654 | bfd_put_32 (obfd, XOR_R11_R12_R12, p), p += 4; | |
10655 | bfd_put_32 (obfd, ADD_R2_R2_R11, p), p += 4; | |
10656 | } | |
10657 | if (plt_static_chain) | |
10658 | bfd_put_32 (obfd, LD_R11_0R2 | PPC_LO (offset + 16), p), p += 4; | |
10659 | bfd_put_32 (obfd, LD_R2_0R2 | PPC_LO (offset + 8), p), p += 4; | |
794e51c0 | 10660 | } |
ac2df442 | 10661 | } |
b9e5796b | 10662 | if (plt_load_toc && plt_thread_safe && !use_fake_dep) |
794e51c0 AM |
10663 | { |
10664 | bfd_put_32 (obfd, CMPLDI_R2_0, p), p += 4; | |
10665 | bfd_put_32 (obfd, BNECTR_P4, p), p += 4; | |
22aa0c7e | 10666 | bfd_put_32 (obfd, B_DOT | (cmp_branch_off & 0x3fffffc), p), p += 4; |
794e51c0 AM |
10667 | } |
10668 | else | |
10669 | bfd_put_32 (obfd, BCTR, p), p += 4; | |
5d1634d7 AM |
10670 | return p; |
10671 | } | |
10672 | ||
a7f2871e AM |
10673 | /* Build a special .plt call stub for __tls_get_addr. */ |
10674 | ||
10675 | #define LD_R11_0R3 0xe9630000 | |
10676 | #define LD_R12_0R3 0xe9830000 | |
10677 | #define MR_R0_R3 0x7c601b78 | |
10678 | #define CMPDI_R11_0 0x2c2b0000 | |
10679 | #define ADD_R3_R12_R13 0x7c6c6a14 | |
10680 | #define BEQLR 0x4d820020 | |
10681 | #define MR_R3_R0 0x7c030378 | |
a7f2871e AM |
10682 | #define STD_R11_0R1 0xf9610000 |
10683 | #define BCTRL 0x4e800421 | |
10684 | #define LD_R11_0R1 0xe9610000 | |
a7f2871e AM |
10685 | #define MTLR_R11 0x7d6803a6 |
10686 | ||
10687 | static inline bfd_byte * | |
794e51c0 AM |
10688 | build_tls_get_addr_stub (struct ppc_link_hash_table *htab, |
10689 | struct ppc_stub_hash_entry *stub_entry, | |
10690 | bfd_byte *p, bfd_vma offset, Elf_Internal_Rela *r) | |
a7f2871e | 10691 | { |
e7d1c40c | 10692 | bfd *obfd = htab->params->stub_bfd; |
794e51c0 | 10693 | |
a7f2871e AM |
10694 | bfd_put_32 (obfd, LD_R11_0R3 + 0, p), p += 4; |
10695 | bfd_put_32 (obfd, LD_R12_0R3 + 8, p), p += 4; | |
10696 | bfd_put_32 (obfd, MR_R0_R3, p), p += 4; | |
10697 | bfd_put_32 (obfd, CMPDI_R11_0, p), p += 4; | |
10698 | bfd_put_32 (obfd, ADD_R3_R12_R13, p), p += 4; | |
10699 | bfd_put_32 (obfd, BEQLR, p), p += 4; | |
10700 | bfd_put_32 (obfd, MR_R3_R0, p), p += 4; | |
10701 | bfd_put_32 (obfd, MFLR_R11, p), p += 4; | |
a078d95a | 10702 | bfd_put_32 (obfd, STD_R11_0R1 + STK_LINKER (htab), p), p += 4; |
a7f2871e AM |
10703 | |
10704 | if (r != NULL) | |
10705 | r[0].r_offset += 9 * 4; | |
794e51c0 | 10706 | p = build_plt_stub (htab, stub_entry, p, offset, r); |
a7f2871e AM |
10707 | bfd_put_32 (obfd, BCTRL, p - 4); |
10708 | ||
a078d95a | 10709 | bfd_put_32 (obfd, LD_R2_0R1 + STK_TOC (htab), p), p += 4; |
bd4d2eaa | 10710 | bfd_put_32 (obfd, LD_R11_0R1 + STK_LINKER (htab), p), p += 4; |
a7f2871e AM |
10711 | bfd_put_32 (obfd, MTLR_R11, p), p += 4; |
10712 | bfd_put_32 (obfd, BLR, p), p += 4; | |
10713 | ||
10714 | return p; | |
10715 | } | |
10716 | ||
176a0d42 AM |
10717 | static Elf_Internal_Rela * |
10718 | get_relocs (asection *sec, int count) | |
10719 | { | |
10720 | Elf_Internal_Rela *relocs; | |
10721 | struct bfd_elf_section_data *elfsec_data; | |
10722 | ||
10723 | elfsec_data = elf_section_data (sec); | |
10724 | relocs = elfsec_data->relocs; | |
10725 | if (relocs == NULL) | |
10726 | { | |
10727 | bfd_size_type relsize; | |
10728 | relsize = sec->reloc_count * sizeof (*relocs); | |
10729 | relocs = bfd_alloc (sec->owner, relsize); | |
10730 | if (relocs == NULL) | |
10731 | return NULL; | |
10732 | elfsec_data->relocs = relocs; | |
d4730f92 BS |
10733 | elfsec_data->rela.hdr = bfd_zalloc (sec->owner, |
10734 | sizeof (Elf_Internal_Shdr)); | |
10735 | if (elfsec_data->rela.hdr == NULL) | |
10736 | return NULL; | |
10737 | elfsec_data->rela.hdr->sh_size = (sec->reloc_count | |
10738 | * sizeof (Elf64_External_Rela)); | |
10739 | elfsec_data->rela.hdr->sh_entsize = sizeof (Elf64_External_Rela); | |
176a0d42 AM |
10740 | sec->reloc_count = 0; |
10741 | } | |
10742 | relocs += sec->reloc_count; | |
10743 | sec->reloc_count += count; | |
10744 | return relocs; | |
10745 | } | |
10746 | ||
aa374f67 | 10747 | static bfd_vma |
25f53a85 | 10748 | get_r2off (struct bfd_link_info *info, |
aa374f67 AM |
10749 | struct ppc_stub_hash_entry *stub_entry) |
10750 | { | |
25f53a85 | 10751 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
6f20ed8a | 10752 | bfd_vma r2off = htab->sec_info[stub_entry->target_section->id].toc_off; |
aa374f67 AM |
10753 | |
10754 | if (r2off == 0) | |
10755 | { | |
10756 | /* Support linking -R objects. Get the toc pointer from the | |
10757 | opd entry. */ | |
10758 | char buf[8]; | |
b9e5796b AM |
10759 | if (!htab->opd_abi) |
10760 | return r2off; | |
aa374f67 AM |
10761 | asection *opd = stub_entry->h->elf.root.u.def.section; |
10762 | bfd_vma opd_off = stub_entry->h->elf.root.u.def.value; | |
10763 | ||
10764 | if (strcmp (opd->name, ".opd") != 0 | |
10765 | || opd->reloc_count != 0) | |
10766 | { | |
bc30df16 | 10767 | info->callbacks->einfo (_("%P: cannot find opd entry toc for `%T'\n"), |
25f53a85 | 10768 | stub_entry->h->elf.root.root.string); |
aa374f67 | 10769 | bfd_set_error (bfd_error_bad_value); |
a7c49797 | 10770 | return (bfd_vma) -1; |
aa374f67 AM |
10771 | } |
10772 | if (!bfd_get_section_contents (opd->owner, opd, buf, opd_off + 8, 8)) | |
a7c49797 | 10773 | return (bfd_vma) -1; |
aa374f67 | 10774 | r2off = bfd_get_64 (opd->owner, buf); |
25f53a85 | 10775 | r2off -= elf_gp (info->output_bfd); |
aa374f67 | 10776 | } |
6f20ed8a | 10777 | r2off -= htab->sec_info[stub_entry->group->link_sec->id].toc_off; |
aa374f67 AM |
10778 | return r2off; |
10779 | } | |
10780 | ||
b34976b6 | 10781 | static bfd_boolean |
4ce794b7 | 10782 | ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg) |
5d1634d7 | 10783 | { |
721956f4 AM |
10784 | struct ppc_stub_hash_entry *stub_entry; |
10785 | struct ppc_branch_hash_entry *br_entry; | |
5d1634d7 AM |
10786 | struct bfd_link_info *info; |
10787 | struct ppc_link_hash_table *htab; | |
721956f4 AM |
10788 | bfd_byte *loc; |
10789 | bfd_byte *p; | |
ee75fd95 | 10790 | bfd_vma dest, off; |
721956f4 | 10791 | int size; |
176a0d42 | 10792 | Elf_Internal_Rela *r; |
e054468f | 10793 | asection *plt; |
5d1634d7 | 10794 | |
721956f4 AM |
10795 | /* Massage our args to the form they really have. */ |
10796 | stub_entry = (struct ppc_stub_hash_entry *) gen_entry; | |
4ce794b7 | 10797 | info = in_arg; |
5d1634d7 | 10798 | |
5d1634d7 | 10799 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
10800 | if (htab == NULL) |
10801 | return FALSE; | |
5d1634d7 | 10802 | |
721956f4 | 10803 | /* Make a note of the offset within the stubs for this entry. */ |
6f20ed8a AM |
10804 | stub_entry->stub_offset = stub_entry->group->stub_sec->size; |
10805 | loc = stub_entry->group->stub_sec->contents + stub_entry->stub_offset; | |
721956f4 | 10806 | |
4ce794b7 | 10807 | htab->stub_count[stub_entry->stub_type - 1] += 1; |
721956f4 | 10808 | switch (stub_entry->stub_type) |
5d1634d7 | 10809 | { |
721956f4 | 10810 | case ppc_stub_long_branch: |
ad8e1ba5 | 10811 | case ppc_stub_long_branch_r2off: |
721956f4 | 10812 | /* Branches are relative. This is where we are going to. */ |
6911b7dc AM |
10813 | dest = (stub_entry->target_value |
10814 | + stub_entry->target_section->output_offset | |
10815 | + stub_entry->target_section->output_section->vma); | |
10816 | dest += PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other); | |
10817 | off = dest; | |
5d1634d7 | 10818 | |
721956f4 AM |
10819 | /* And this is where we are coming from. */ |
10820 | off -= (stub_entry->stub_offset | |
6f20ed8a AM |
10821 | + stub_entry->group->stub_sec->output_offset |
10822 | + stub_entry->group->stub_sec->output_section->vma); | |
e86ce104 | 10823 | |
ac2df442 AM |
10824 | size = 4; |
10825 | if (stub_entry->stub_type == ppc_stub_long_branch_r2off) | |
ad8e1ba5 | 10826 | { |
25f53a85 | 10827 | bfd_vma r2off = get_r2off (info, stub_entry); |
ad8e1ba5 | 10828 | |
a7c49797 | 10829 | if (r2off == (bfd_vma) -1) |
aa374f67 AM |
10830 | { |
10831 | htab->stub_error = TRUE; | |
10832 | return FALSE; | |
10833 | } | |
e7d1c40c | 10834 | bfd_put_32 (htab->params->stub_bfd, STD_R2_0R1 + STK_TOC (htab), loc); |
ad8e1ba5 | 10835 | loc += 4; |
a7c49797 | 10836 | size = 8; |
ac2df442 AM |
10837 | if (PPC_HA (r2off) != 0) |
10838 | { | |
e7d1c40c AM |
10839 | bfd_put_32 (htab->params->stub_bfd, |
10840 | ADDIS_R2_R2 | PPC_HA (r2off), loc); | |
ac2df442 | 10841 | loc += 4; |
a7c49797 AM |
10842 | size += 4; |
10843 | } | |
10844 | if (PPC_LO (r2off) != 0) | |
10845 | { | |
10846 | bfd_put_32 (htab->params->stub_bfd, | |
10847 | ADDI_R2_R2 | PPC_LO (r2off), loc); | |
10848 | loc += 4; | |
10849 | size += 4; | |
ac2df442 | 10850 | } |
ac2df442 | 10851 | off -= size - 4; |
ad8e1ba5 | 10852 | } |
e7d1c40c | 10853 | bfd_put_32 (htab->params->stub_bfd, B_DOT | (off & 0x3fffffc), loc); |
ad8e1ba5 | 10854 | |
5c3dead3 AM |
10855 | if (off + (1 << 25) >= (bfd_vma) (1 << 26)) |
10856 | { | |
bc30df16 AM |
10857 | info->callbacks->einfo |
10858 | (_("%P: long branch stub `%s' offset overflow\n"), | |
10859 | stub_entry->root.string); | |
5c3dead3 AM |
10860 | htab->stub_error = TRUE; |
10861 | return FALSE; | |
10862 | } | |
ee75fd95 AM |
10863 | |
10864 | if (info->emitrelocations) | |
10865 | { | |
6f20ed8a | 10866 | r = get_relocs (stub_entry->group->stub_sec, 1); |
176a0d42 AM |
10867 | if (r == NULL) |
10868 | return FALSE; | |
6f20ed8a | 10869 | r->r_offset = loc - stub_entry->group->stub_sec->contents; |
ee75fd95 AM |
10870 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL24); |
10871 | r->r_addend = dest; | |
10872 | if (stub_entry->h != NULL) | |
10873 | { | |
10874 | struct elf_link_hash_entry **hashes; | |
10875 | unsigned long symndx; | |
10876 | struct ppc_link_hash_entry *h; | |
10877 | ||
e7d1c40c | 10878 | hashes = elf_sym_hashes (htab->params->stub_bfd); |
ee75fd95 AM |
10879 | if (hashes == NULL) |
10880 | { | |
10881 | bfd_size_type hsize; | |
10882 | ||
10883 | hsize = (htab->stub_globals + 1) * sizeof (*hashes); | |
e7d1c40c | 10884 | hashes = bfd_zalloc (htab->params->stub_bfd, hsize); |
ee75fd95 AM |
10885 | if (hashes == NULL) |
10886 | return FALSE; | |
e7d1c40c | 10887 | elf_sym_hashes (htab->params->stub_bfd) = hashes; |
ee75fd95 AM |
10888 | htab->stub_globals = 1; |
10889 | } | |
10890 | symndx = htab->stub_globals++; | |
10891 | h = stub_entry->h; | |
10892 | hashes[symndx] = &h->elf; | |
10893 | r->r_info = ELF64_R_INFO (symndx, R_PPC64_REL24); | |
10894 | if (h->oh != NULL && h->oh->is_func) | |
b31867b6 | 10895 | h = ppc_follow_link (h->oh); |
ee75fd95 AM |
10896 | if (h->elf.root.u.def.section != stub_entry->target_section) |
10897 | /* H is an opd symbol. The addend must be zero. */ | |
10898 | r->r_addend = 0; | |
10899 | else | |
10900 | { | |
10901 | off = (h->elf.root.u.def.value | |
10902 | + h->elf.root.u.def.section->output_offset | |
10903 | + h->elf.root.u.def.section->output_section->vma); | |
10904 | r->r_addend -= off; | |
10905 | } | |
10906 | } | |
10907 | } | |
721956f4 | 10908 | break; |
e86ce104 | 10909 | |
721956f4 | 10910 | case ppc_stub_plt_branch: |
ad8e1ba5 | 10911 | case ppc_stub_plt_branch_r2off: |
721956f4 AM |
10912 | br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table, |
10913 | stub_entry->root.string + 9, | |
b34976b6 | 10914 | FALSE, FALSE); |
721956f4 AM |
10915 | if (br_entry == NULL) |
10916 | { | |
8de848d8 | 10917 | info->callbacks->einfo (_("%P: can't find branch stub `%s'\n"), |
25f53a85 | 10918 | stub_entry->root.string); |
b34976b6 AM |
10919 | htab->stub_error = TRUE; |
10920 | return FALSE; | |
721956f4 AM |
10921 | } |
10922 | ||
176a0d42 AM |
10923 | dest = (stub_entry->target_value |
10924 | + stub_entry->target_section->output_offset | |
10925 | + stub_entry->target_section->output_section->vma); | |
6911b7dc AM |
10926 | if (stub_entry->stub_type != ppc_stub_plt_branch_r2off) |
10927 | dest += PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other); | |
721956f4 | 10928 | |
176a0d42 | 10929 | bfd_put_64 (htab->brlt->owner, dest, |
4ce794b7 | 10930 | htab->brlt->contents + br_entry->offset); |
721956f4 | 10931 | |
f94498ff | 10932 | if (br_entry->iter == htab->stub_iteration) |
721956f4 | 10933 | { |
f94498ff | 10934 | br_entry->iter = 0; |
84f5d08e | 10935 | |
f94498ff | 10936 | if (htab->relbrlt != NULL) |
84f5d08e | 10937 | { |
f94498ff AM |
10938 | /* Create a reloc for the branch lookup table entry. */ |
10939 | Elf_Internal_Rela rela; | |
10940 | bfd_byte *rl; | |
10941 | ||
10942 | rela.r_offset = (br_entry->offset | |
10943 | + htab->brlt->output_offset | |
10944 | + htab->brlt->output_section->vma); | |
10945 | rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
176a0d42 | 10946 | rela.r_addend = dest; |
f94498ff AM |
10947 | |
10948 | rl = htab->relbrlt->contents; | |
10949 | rl += (htab->relbrlt->reloc_count++ | |
10950 | * sizeof (Elf64_External_Rela)); | |
10951 | bfd_elf64_swap_reloca_out (htab->relbrlt->owner, &rela, rl); | |
10952 | } | |
10953 | else if (info->emitrelocations) | |
10954 | { | |
176a0d42 AM |
10955 | r = get_relocs (htab->brlt, 1); |
10956 | if (r == NULL) | |
10957 | return FALSE; | |
10958 | /* brlt, being SEC_LINKER_CREATED does not go through the | |
10959 | normal reloc processing. Symbols and offsets are not | |
10960 | translated from input file to output file form, so | |
10961 | set up the offset per the output file. */ | |
f94498ff AM |
10962 | r->r_offset = (br_entry->offset |
10963 | + htab->brlt->output_offset | |
10964 | + htab->brlt->output_section->vma); | |
10965 | r->r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
176a0d42 | 10966 | r->r_addend = dest; |
84f5d08e | 10967 | } |
84f5d08e | 10968 | } |
721956f4 | 10969 | |
176a0d42 AM |
10970 | dest = (br_entry->offset |
10971 | + htab->brlt->output_offset | |
10972 | + htab->brlt->output_section->vma); | |
10973 | ||
10974 | off = (dest | |
4ce794b7 | 10975 | - elf_gp (htab->brlt->output_section->owner) |
6f20ed8a | 10976 | - htab->sec_info[stub_entry->group->link_sec->id].toc_off); |
721956f4 | 10977 | |
ad8e1ba5 | 10978 | if (off + 0x80008000 > 0xffffffff || (off & 7) != 0) |
5d1634d7 | 10979 | { |
25f53a85 | 10980 | info->callbacks->einfo |
bc30df16 | 10981 | (_("%P: linkage table error against `%T'\n"), |
721956f4 | 10982 | stub_entry->root.string); |
5d1634d7 | 10983 | bfd_set_error (bfd_error_bad_value); |
b34976b6 AM |
10984 | htab->stub_error = TRUE; |
10985 | return FALSE; | |
5d1634d7 | 10986 | } |
41bd81ab | 10987 | |
176a0d42 AM |
10988 | if (info->emitrelocations) |
10989 | { | |
6f20ed8a | 10990 | r = get_relocs (stub_entry->group->stub_sec, 1 + (PPC_HA (off) != 0)); |
176a0d42 AM |
10991 | if (r == NULL) |
10992 | return FALSE; | |
6f20ed8a | 10993 | r[0].r_offset = loc - stub_entry->group->stub_sec->contents; |
7cfbafbc AM |
10994 | if (bfd_big_endian (info->output_bfd)) |
10995 | r[0].r_offset += 2; | |
00f412ee | 10996 | if (stub_entry->stub_type == ppc_stub_plt_branch_r2off) |
176a0d42 AM |
10997 | r[0].r_offset += 4; |
10998 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); | |
10999 | r[0].r_addend = dest; | |
11000 | if (PPC_HA (off) != 0) | |
11001 | { | |
11002 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA); | |
11003 | r[1].r_offset = r[0].r_offset + 4; | |
11004 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); | |
11005 | r[1].r_addend = r[0].r_addend; | |
11006 | } | |
11007 | } | |
11008 | ||
00f412ee | 11009 | if (stub_entry->stub_type != ppc_stub_plt_branch_r2off) |
ad8e1ba5 | 11010 | { |
176a0d42 | 11011 | if (PPC_HA (off) != 0) |
ac2df442 AM |
11012 | { |
11013 | size = 16; | |
e7d1c40c | 11014 | bfd_put_32 (htab->params->stub_bfd, |
397998fc | 11015 | ADDIS_R12_R2 | PPC_HA (off), loc); |
ac2df442 | 11016 | loc += 4; |
e7d1c40c | 11017 | bfd_put_32 (htab->params->stub_bfd, |
397998fc | 11018 | LD_R12_0R12 | PPC_LO (off), loc); |
ac2df442 AM |
11019 | } |
11020 | else | |
11021 | { | |
11022 | size = 12; | |
e7d1c40c AM |
11023 | bfd_put_32 (htab->params->stub_bfd, |
11024 | LD_R12_0R2 | PPC_LO (off), loc); | |
ac2df442 | 11025 | } |
ad8e1ba5 AM |
11026 | } |
11027 | else | |
11028 | { | |
25f53a85 | 11029 | bfd_vma r2off = get_r2off (info, stub_entry); |
aa374f67 | 11030 | |
a7c49797 | 11031 | if (r2off == (bfd_vma) -1) |
aa374f67 AM |
11032 | { |
11033 | htab->stub_error = TRUE; | |
11034 | return FALSE; | |
11035 | } | |
ad8e1ba5 | 11036 | |
e7d1c40c | 11037 | bfd_put_32 (htab->params->stub_bfd, STD_R2_0R1 + STK_TOC (htab), loc); |
ad8e1ba5 | 11038 | loc += 4; |
00f412ee | 11039 | size = 16; |
176a0d42 | 11040 | if (PPC_HA (off) != 0) |
ac2df442 AM |
11041 | { |
11042 | size += 4; | |
e7d1c40c | 11043 | bfd_put_32 (htab->params->stub_bfd, |
397998fc | 11044 | ADDIS_R12_R2 | PPC_HA (off), loc); |
ac2df442 | 11045 | loc += 4; |
e7d1c40c | 11046 | bfd_put_32 (htab->params->stub_bfd, |
397998fc | 11047 | LD_R12_0R12 | PPC_LO (off), loc); |
ac2df442 AM |
11048 | } |
11049 | else | |
e7d1c40c | 11050 | bfd_put_32 (htab->params->stub_bfd, LD_R12_0R2 | PPC_LO (off), loc); |
ac2df442 AM |
11051 | |
11052 | if (PPC_HA (r2off) != 0) | |
11053 | { | |
11054 | size += 4; | |
00f412ee | 11055 | loc += 4; |
e7d1c40c AM |
11056 | bfd_put_32 (htab->params->stub_bfd, |
11057 | ADDIS_R2_R2 | PPC_HA (r2off), loc); | |
00f412ee AM |
11058 | } |
11059 | if (PPC_LO (r2off) != 0) | |
11060 | { | |
11061 | size += 4; | |
ac2df442 | 11062 | loc += 4; |
e7d1c40c AM |
11063 | bfd_put_32 (htab->params->stub_bfd, |
11064 | ADDI_R2_R2 | PPC_LO (r2off), loc); | |
ac2df442 | 11065 | } |
ad8e1ba5 AM |
11066 | } |
11067 | loc += 4; | |
e7d1c40c | 11068 | bfd_put_32 (htab->params->stub_bfd, MTCTR_R12, loc); |
ad8e1ba5 | 11069 | loc += 4; |
e7d1c40c | 11070 | bfd_put_32 (htab->params->stub_bfd, BCTR, loc); |
721956f4 | 11071 | break; |
5d1634d7 | 11072 | |
721956f4 | 11073 | case ppc_stub_plt_call: |
794e51c0 | 11074 | case ppc_stub_plt_call_r2save: |
e054468f | 11075 | if (stub_entry->h != NULL |
b31867b6 AM |
11076 | && stub_entry->h->is_func_descriptor |
11077 | && stub_entry->h->oh != NULL) | |
c862ae31 | 11078 | { |
b31867b6 AM |
11079 | struct ppc_link_hash_entry *fh = ppc_follow_link (stub_entry->h->oh); |
11080 | ||
11081 | /* If the old-ABI "dot-symbol" is undefined make it weak so | |
6f20ed8a | 11082 | we don't get a link error from RELOC_FOR_GLOBAL_SYMBOL. */ |
b31867b6 AM |
11083 | if (fh->elf.root.type == bfd_link_hash_undefined) |
11084 | fh->elf.root.type = bfd_link_hash_undefweak; | |
9507a174 AM |
11085 | /* Stop undo_symbol_twiddle changing it back to undefined. */ |
11086 | fh->was_undefined = 0; | |
c862ae31 AM |
11087 | } |
11088 | ||
721956f4 | 11089 | /* Now build the stub. */ |
e054468f | 11090 | dest = stub_entry->plt_ent->plt.offset & ~1; |
176a0d42 | 11091 | if (dest >= (bfd_vma) -2) |
721956f4 AM |
11092 | abort (); |
11093 | ||
33e44f2e | 11094 | plt = htab->elf.splt; |
25f23106 AM |
11095 | if (!htab->elf.dynamic_sections_created |
11096 | || stub_entry->h == NULL | |
11097 | || stub_entry->h->elf.dynindx == -1) | |
33e44f2e | 11098 | plt = htab->elf.iplt; |
e054468f AM |
11099 | |
11100 | dest += plt->output_offset + plt->output_section->vma; | |
11101 | ||
11102 | if (stub_entry->h == NULL | |
11103 | && (stub_entry->plt_ent->plt.offset & 1) == 0) | |
11104 | { | |
11105 | Elf_Internal_Rela rela; | |
11106 | bfd_byte *rl; | |
11107 | ||
11108 | rela.r_offset = dest; | |
ee67d69a AM |
11109 | if (htab->opd_abi) |
11110 | rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL); | |
11111 | else | |
11112 | rela.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE); | |
e054468f AM |
11113 | rela.r_addend = (stub_entry->target_value |
11114 | + stub_entry->target_section->output_offset | |
11115 | + stub_entry->target_section->output_section->vma); | |
11116 | ||
33e44f2e AM |
11117 | rl = (htab->elf.irelplt->contents |
11118 | + (htab->elf.irelplt->reloc_count++ | |
25f23106 AM |
11119 | * sizeof (Elf64_External_Rela))); |
11120 | bfd_elf64_swap_reloca_out (info->output_bfd, &rela, rl); | |
e054468f AM |
11121 | stub_entry->plt_ent->plt.offset |= 1; |
11122 | } | |
176a0d42 AM |
11123 | |
11124 | off = (dest | |
e054468f | 11125 | - elf_gp (plt->output_section->owner) |
6f20ed8a | 11126 | - htab->sec_info[stub_entry->group->link_sec->id].toc_off); |
721956f4 | 11127 | |
ad8e1ba5 | 11128 | if (off + 0x80008000 > 0xffffffff || (off & 7) != 0) |
721956f4 | 11129 | { |
25f53a85 | 11130 | info->callbacks->einfo |
695344c0 | 11131 | /* xgettext:c-format */ |
bc30df16 | 11132 | (_("%P: linkage table error against `%T'\n"), |
e054468f AM |
11133 | stub_entry->h != NULL |
11134 | ? stub_entry->h->elf.root.root.string | |
11135 | : "<local sym>"); | |
721956f4 | 11136 | bfd_set_error (bfd_error_bad_value); |
b34976b6 AM |
11137 | htab->stub_error = TRUE; |
11138 | return FALSE; | |
721956f4 AM |
11139 | } |
11140 | ||
e7d1c40c | 11141 | if (htab->params->plt_stub_align != 0) |
794e51c0 AM |
11142 | { |
11143 | unsigned pad = plt_stub_pad (htab, stub_entry, off); | |
11144 | ||
6f20ed8a AM |
11145 | stub_entry->group->stub_sec->size += pad; |
11146 | stub_entry->stub_offset = stub_entry->group->stub_sec->size; | |
794e51c0 AM |
11147 | loc += pad; |
11148 | } | |
11149 | ||
176a0d42 AM |
11150 | r = NULL; |
11151 | if (info->emitrelocations) | |
11152 | { | |
6f20ed8a | 11153 | r = get_relocs (stub_entry->group->stub_sec, |
3ba720c7 AM |
11154 | ((PPC_HA (off) != 0) |
11155 | + (htab->opd_abi | |
e7d1c40c | 11156 | ? 2 + (htab->params->plt_static_chain |
3ba720c7 AM |
11157 | && PPC_HA (off + 16) == PPC_HA (off)) |
11158 | : 1))); | |
176a0d42 AM |
11159 | if (r == NULL) |
11160 | return FALSE; | |
6f20ed8a | 11161 | r[0].r_offset = loc - stub_entry->group->stub_sec->contents; |
7cfbafbc AM |
11162 | if (bfd_big_endian (info->output_bfd)) |
11163 | r[0].r_offset += 2; | |
176a0d42 AM |
11164 | r[0].r_addend = dest; |
11165 | } | |
a7f2871e AM |
11166 | if (stub_entry->h != NULL |
11167 | && (stub_entry->h == htab->tls_get_addr_fd | |
11168 | || stub_entry->h == htab->tls_get_addr) | |
7c9cf415 | 11169 | && htab->params->tls_get_addr_opt) |
794e51c0 | 11170 | p = build_tls_get_addr_stub (htab, stub_entry, loc, off, r); |
a7f2871e | 11171 | else |
794e51c0 | 11172 | p = build_plt_stub (htab, stub_entry, loc, off, r); |
721956f4 AM |
11173 | size = p - loc; |
11174 | break; | |
11175 | ||
a4b6fadd AM |
11176 | case ppc_stub_save_res: |
11177 | return TRUE; | |
11178 | ||
721956f4 AM |
11179 | default: |
11180 | BFD_FAIL (); | |
b34976b6 | 11181 | return FALSE; |
721956f4 AM |
11182 | } |
11183 | ||
6f20ed8a | 11184 | stub_entry->group->stub_sec->size += size; |
97b639ba | 11185 | |
e7d1c40c | 11186 | if (htab->params->emit_stub_syms) |
97b639ba AM |
11187 | { |
11188 | struct elf_link_hash_entry *h; | |
ee75fd95 AM |
11189 | size_t len1, len2; |
11190 | char *name; | |
11191 | const char *const stub_str[] = { "long_branch", | |
11192 | "long_branch_r2off", | |
11193 | "plt_branch", | |
11194 | "plt_branch_r2off", | |
794e51c0 | 11195 | "plt_call", |
ee75fd95 AM |
11196 | "plt_call" }; |
11197 | ||
11198 | len1 = strlen (stub_str[stub_entry->stub_type - 1]); | |
11199 | len2 = strlen (stub_entry->root.string); | |
11200 | name = bfd_malloc (len1 + len2 + 2); | |
11201 | if (name == NULL) | |
11202 | return FALSE; | |
11203 | memcpy (name, stub_entry->root.string, 9); | |
11204 | memcpy (name + 9, stub_str[stub_entry->stub_type - 1], len1); | |
11205 | memcpy (name + len1 + 9, stub_entry->root.string + 8, len2 - 8 + 1); | |
11206 | h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE); | |
97b639ba AM |
11207 | if (h == NULL) |
11208 | return FALSE; | |
11209 | if (h->root.type == bfd_link_hash_new) | |
11210 | { | |
11211 | h->root.type = bfd_link_hash_defined; | |
6f20ed8a | 11212 | h->root.u.def.section = stub_entry->group->stub_sec; |
97b639ba | 11213 | h->root.u.def.value = stub_entry->stub_offset; |
f5385ebf AM |
11214 | h->ref_regular = 1; |
11215 | h->def_regular = 1; | |
11216 | h->ref_regular_nonweak = 1; | |
11217 | h->forced_local = 1; | |
11218 | h->non_elf = 0; | |
2ec55de3 | 11219 | h->root.linker_def = 1; |
97b639ba AM |
11220 | } |
11221 | } | |
11222 | ||
b34976b6 | 11223 | return TRUE; |
721956f4 AM |
11224 | } |
11225 | ||
11226 | /* As above, but don't actually build the stub. Just bump offset so | |
11227 | we know stub section sizes, and select plt_branch stubs where | |
11228 | long_branch stubs won't do. */ | |
11229 | ||
b34976b6 | 11230 | static bfd_boolean |
4ce794b7 | 11231 | ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg) |
721956f4 AM |
11232 | { |
11233 | struct ppc_stub_hash_entry *stub_entry; | |
63bc6f6c | 11234 | struct bfd_link_info *info; |
721956f4 AM |
11235 | struct ppc_link_hash_table *htab; |
11236 | bfd_vma off; | |
11237 | int size; | |
11238 | ||
11239 | /* Massage our args to the form they really have. */ | |
11240 | stub_entry = (struct ppc_stub_hash_entry *) gen_entry; | |
63bc6f6c AM |
11241 | info = in_arg; |
11242 | ||
11243 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
11244 | if (htab == NULL) |
11245 | return FALSE; | |
721956f4 | 11246 | |
a4b6fadd AM |
11247 | if (stub_entry->h != NULL |
11248 | && stub_entry->h->save_res | |
11249 | && stub_entry->h->elf.root.type == bfd_link_hash_defined | |
11250 | && stub_entry->h->elf.root.u.def.section == htab->sfpr) | |
11251 | { | |
11252 | /* Don't make stubs to out-of-line register save/restore | |
11253 | functions. Instead, emit copies of the functions. */ | |
11254 | stub_entry->group->needs_save_res = 1; | |
11255 | stub_entry->stub_type = ppc_stub_save_res; | |
11256 | return TRUE; | |
11257 | } | |
11258 | ||
794e51c0 AM |
11259 | if (stub_entry->stub_type == ppc_stub_plt_call |
11260 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
721956f4 | 11261 | { |
e054468f AM |
11262 | asection *plt; |
11263 | off = stub_entry->plt_ent->plt.offset & ~(bfd_vma) 1; | |
58ac9f71 | 11264 | if (off >= (bfd_vma) -2) |
411e1bfb | 11265 | abort (); |
33e44f2e | 11266 | plt = htab->elf.splt; |
25f23106 AM |
11267 | if (!htab->elf.dynamic_sections_created |
11268 | || stub_entry->h == NULL | |
11269 | || stub_entry->h->elf.dynindx == -1) | |
33e44f2e | 11270 | plt = htab->elf.iplt; |
e054468f AM |
11271 | off += (plt->output_offset |
11272 | + plt->output_section->vma | |
11273 | - elf_gp (plt->output_section->owner) | |
6f20ed8a | 11274 | - htab->sec_info[stub_entry->group->link_sec->id].toc_off); |
721956f4 | 11275 | |
794e51c0 | 11276 | size = plt_stub_size (htab, stub_entry, off); |
e7d1c40c | 11277 | if (htab->params->plt_stub_align) |
794e51c0 | 11278 | size += plt_stub_pad (htab, stub_entry, off); |
176a0d42 AM |
11279 | if (info->emitrelocations) |
11280 | { | |
6f20ed8a | 11281 | stub_entry->group->stub_sec->reloc_count |
b9e5796b AM |
11282 | += ((PPC_HA (off) != 0) |
11283 | + (htab->opd_abi | |
e7d1c40c | 11284 | ? 2 + (htab->params->plt_static_chain |
b9e5796b AM |
11285 | && PPC_HA (off + 16) == PPC_HA (off)) |
11286 | : 1)); | |
6f20ed8a | 11287 | stub_entry->group->stub_sec->flags |= SEC_RELOC; |
176a0d42 | 11288 | } |
721956f4 AM |
11289 | } |
11290 | else | |
11291 | { | |
ad8e1ba5 AM |
11292 | /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off |
11293 | variants. */ | |
ac2df442 | 11294 | bfd_vma r2off = 0; |
6911b7dc | 11295 | bfd_vma local_off = 0; |
ac2df442 | 11296 | |
721956f4 AM |
11297 | off = (stub_entry->target_value |
11298 | + stub_entry->target_section->output_offset | |
11299 | + stub_entry->target_section->output_section->vma); | |
6f20ed8a AM |
11300 | off -= (stub_entry->group->stub_sec->size |
11301 | + stub_entry->group->stub_sec->output_offset | |
11302 | + stub_entry->group->stub_sec->output_section->vma); | |
721956f4 | 11303 | |
ad8e1ba5 AM |
11304 | /* Reset the stub type from the plt variant in case we now |
11305 | can reach with a shorter stub. */ | |
11306 | if (stub_entry->stub_type >= ppc_stub_plt_branch) | |
11307 | stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch; | |
11308 | ||
11309 | size = 4; | |
11310 | if (stub_entry->stub_type == ppc_stub_long_branch_r2off) | |
11311 | { | |
25f53a85 | 11312 | r2off = get_r2off (info, stub_entry); |
a7c49797 | 11313 | if (r2off == (bfd_vma) -1) |
aa374f67 AM |
11314 | { |
11315 | htab->stub_error = TRUE; | |
11316 | return FALSE; | |
11317 | } | |
a7c49797 | 11318 | size = 8; |
ac2df442 | 11319 | if (PPC_HA (r2off) != 0) |
a7c49797 AM |
11320 | size += 4; |
11321 | if (PPC_LO (r2off) != 0) | |
11322 | size += 4; | |
ac2df442 | 11323 | off -= size - 4; |
ad8e1ba5 AM |
11324 | } |
11325 | ||
6911b7dc AM |
11326 | local_off = PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other); |
11327 | ||
b9e5796b AM |
11328 | /* If the branch offset if too big, use a ppc_stub_plt_branch. |
11329 | Do the same for -R objects without function descriptors. */ | |
11330 | if (off + (1 << 25) >= (bfd_vma) (1 << 26) - local_off | |
11331 | || (stub_entry->stub_type == ppc_stub_long_branch_r2off | |
a7c49797 AM |
11332 | && r2off == 0 |
11333 | && htab->sec_info[stub_entry->target_section->id].toc_off == 0)) | |
721956f4 AM |
11334 | { |
11335 | struct ppc_branch_hash_entry *br_entry; | |
11336 | ||
11337 | br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table, | |
11338 | stub_entry->root.string + 9, | |
b34976b6 | 11339 | TRUE, FALSE); |
721956f4 AM |
11340 | if (br_entry == NULL) |
11341 | { | |
8de848d8 | 11342 | info->callbacks->einfo (_("%P: can't build branch stub `%s'\n"), |
25f53a85 | 11343 | stub_entry->root.string); |
b34976b6 AM |
11344 | htab->stub_error = TRUE; |
11345 | return FALSE; | |
721956f4 AM |
11346 | } |
11347 | ||
11348 | if (br_entry->iter != htab->stub_iteration) | |
11349 | { | |
11350 | br_entry->iter = htab->stub_iteration; | |
eea6121a AM |
11351 | br_entry->offset = htab->brlt->size; |
11352 | htab->brlt->size += 8; | |
63bc6f6c | 11353 | |
ee75fd95 | 11354 | if (htab->relbrlt != NULL) |
eea6121a | 11355 | htab->relbrlt->size += sizeof (Elf64_External_Rela); |
84f5d08e AM |
11356 | else if (info->emitrelocations) |
11357 | { | |
11358 | htab->brlt->reloc_count += 1; | |
11359 | htab->brlt->flags |= SEC_RELOC; | |
11360 | } | |
721956f4 | 11361 | } |
ad8e1ba5 AM |
11362 | |
11363 | stub_entry->stub_type += ppc_stub_plt_branch - ppc_stub_long_branch; | |
ac2df442 AM |
11364 | off = (br_entry->offset |
11365 | + htab->brlt->output_offset | |
11366 | + htab->brlt->output_section->vma | |
11367 | - elf_gp (htab->brlt->output_section->owner) | |
6f20ed8a | 11368 | - htab->sec_info[stub_entry->group->link_sec->id].toc_off); |
ac2df442 | 11369 | |
176a0d42 AM |
11370 | if (info->emitrelocations) |
11371 | { | |
6f20ed8a AM |
11372 | stub_entry->group->stub_sec->reloc_count |
11373 | += 1 + (PPC_HA (off) != 0); | |
11374 | stub_entry->group->stub_sec->flags |= SEC_RELOC; | |
176a0d42 AM |
11375 | } |
11376 | ||
00f412ee | 11377 | if (stub_entry->stub_type != ppc_stub_plt_branch_r2off) |
ac2df442 AM |
11378 | { |
11379 | size = 12; | |
176a0d42 | 11380 | if (PPC_HA (off) != 0) |
ac2df442 AM |
11381 | size = 16; |
11382 | } | |
11383 | else | |
11384 | { | |
00f412ee | 11385 | size = 16; |
176a0d42 | 11386 | if (PPC_HA (off) != 0) |
ac2df442 AM |
11387 | size += 4; |
11388 | ||
11389 | if (PPC_HA (r2off) != 0) | |
11390 | size += 4; | |
00f412ee AM |
11391 | if (PPC_LO (r2off) != 0) |
11392 | size += 4; | |
ac2df442 | 11393 | } |
721956f4 | 11394 | } |
84f5d08e AM |
11395 | else if (info->emitrelocations) |
11396 | { | |
6f20ed8a AM |
11397 | stub_entry->group->stub_sec->reloc_count += 1; |
11398 | stub_entry->group->stub_sec->flags |= SEC_RELOC; | |
84f5d08e | 11399 | } |
721956f4 AM |
11400 | } |
11401 | ||
6f20ed8a | 11402 | stub_entry->group->stub_sec->size += size; |
b34976b6 | 11403 | return TRUE; |
721956f4 AM |
11404 | } |
11405 | ||
11406 | /* Set up various things so that we can make a list of input sections | |
11407 | for each output section included in the link. Returns -1 on error, | |
cedb70c5 | 11408 | 0 when no stubs will be needed, and 1 on success. */ |
721956f4 AM |
11409 | |
11410 | int | |
e7d1c40c | 11411 | ppc64_elf_setup_section_lists (struct bfd_link_info *info) |
721956f4 | 11412 | { |
6f20ed8a | 11413 | unsigned int id; |
721956f4 AM |
11414 | bfd_size_type amt; |
11415 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
11416 | ||
4dfe6ac6 NC |
11417 | if (htab == NULL) |
11418 | return -1; | |
4c52953f | 11419 | |
6f20ed8a AM |
11420 | htab->sec_info_arr_size = bfd_get_next_section_id (); |
11421 | amt = sizeof (*htab->sec_info) * (htab->sec_info_arr_size); | |
11422 | htab->sec_info = bfd_zmalloc (amt); | |
11423 | if (htab->sec_info == NULL) | |
721956f4 AM |
11424 | return -1; |
11425 | ||
3d6f9012 AM |
11426 | /* Set toc_off for com, und, abs and ind sections. */ |
11427 | for (id = 0; id < 3; id++) | |
6f20ed8a | 11428 | htab->sec_info[id].toc_off = TOC_BASE_OFF; |
734b6cf9 | 11429 | |
721956f4 AM |
11430 | return 1; |
11431 | } | |
11432 | ||
927be08e AM |
11433 | /* Set up for first pass at multitoc partitioning. */ |
11434 | ||
11435 | void | |
11436 | ppc64_elf_start_multitoc_partition (struct bfd_link_info *info) | |
11437 | { | |
11438 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
11439 | ||
1c865ab2 | 11440 | htab->toc_curr = ppc64_elf_set_toc (info, info->output_bfd); |
927be08e AM |
11441 | htab->toc_bfd = NULL; |
11442 | htab->toc_first_sec = NULL; | |
11443 | } | |
11444 | ||
e717da7e AM |
11445 | /* The linker repeatedly calls this function for each TOC input section |
11446 | and linker generated GOT section. Group input bfds such that the toc | |
927be08e | 11447 | within a group is less than 64k in size. */ |
ad8e1ba5 | 11448 | |
927be08e | 11449 | bfd_boolean |
4ce794b7 | 11450 | ppc64_elf_next_toc_section (struct bfd_link_info *info, asection *isec) |
ad8e1ba5 AM |
11451 | { |
11452 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
d77c8a4b | 11453 | bfd_vma addr, off, limit; |
ad8e1ba5 | 11454 | |
4dfe6ac6 NC |
11455 | if (htab == NULL) |
11456 | return FALSE; | |
11457 | ||
927be08e | 11458 | if (!htab->second_toc_pass) |
4c52953f | 11459 | { |
927be08e | 11460 | /* Keep track of the first .toc or .got section for this input bfd. */ |
a4fd3de5 AM |
11461 | bfd_boolean new_bfd = htab->toc_bfd != isec->owner; |
11462 | ||
11463 | if (new_bfd) | |
bf102f86 AM |
11464 | { |
11465 | htab->toc_bfd = isec->owner; | |
11466 | htab->toc_first_sec = isec; | |
11467 | } | |
927be08e | 11468 | |
bf102f86 AM |
11469 | addr = isec->output_offset + isec->output_section->vma; |
11470 | off = addr - htab->toc_curr; | |
d77c8a4b AM |
11471 | limit = 0x80008000; |
11472 | if (ppc64_elf_tdata (isec->owner)->has_small_toc_reloc) | |
11473 | limit = 0x10000; | |
11474 | if (off + isec->size > limit) | |
bf102f86 AM |
11475 | { |
11476 | addr = (htab->toc_first_sec->output_offset | |
11477 | + htab->toc_first_sec->output_section->vma); | |
11478 | htab->toc_curr = addr; | |
a27e685f | 11479 | htab->toc_curr &= -TOC_BASE_ALIGN; |
bf102f86 | 11480 | } |
99877b66 | 11481 | |
927be08e AM |
11482 | /* toc_curr is the base address of this toc group. Set elf_gp |
11483 | for the input section to be the offset relative to the | |
11484 | output toc base plus 0x8000. Making the input elf_gp an | |
11485 | offset allows us to move the toc as a whole without | |
11486 | recalculating input elf_gp. */ | |
11487 | off = htab->toc_curr - elf_gp (isec->output_section->owner); | |
11488 | off += TOC_BASE_OFF; | |
11489 | ||
11490 | /* Die if someone uses a linker script that doesn't keep input | |
11491 | file .toc and .got together. */ | |
a4fd3de5 AM |
11492 | if (new_bfd |
11493 | && elf_gp (isec->owner) != 0 | |
927be08e AM |
11494 | && elf_gp (isec->owner) != off) |
11495 | return FALSE; | |
11496 | ||
11497 | elf_gp (isec->owner) = off; | |
11498 | return TRUE; | |
4c52953f | 11499 | } |
927be08e AM |
11500 | |
11501 | /* During the second pass toc_first_sec points to the start of | |
11502 | a toc group, and toc_curr is used to track the old elf_gp. | |
11503 | We use toc_bfd to ensure we only look at each bfd once. */ | |
11504 | if (htab->toc_bfd == isec->owner) | |
11505 | return TRUE; | |
11506 | htab->toc_bfd = isec->owner; | |
11507 | ||
11508 | if (htab->toc_first_sec == NULL | |
11509 | || htab->toc_curr != elf_gp (isec->owner)) | |
11510 | { | |
11511 | htab->toc_curr = elf_gp (isec->owner); | |
11512 | htab->toc_first_sec = isec; | |
11513 | } | |
11514 | addr = (htab->toc_first_sec->output_offset | |
11515 | + htab->toc_first_sec->output_section->vma); | |
11516 | off = addr - elf_gp (isec->output_section->owner) + TOC_BASE_OFF; | |
11517 | elf_gp (isec->owner) = off; | |
11518 | ||
11519 | return TRUE; | |
ad8e1ba5 AM |
11520 | } |
11521 | ||
927be08e AM |
11522 | /* Called via elf_link_hash_traverse to merge GOT entries for global |
11523 | symbol H. */ | |
11524 | ||
11525 | static bfd_boolean | |
11526 | merge_global_got (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED) | |
11527 | { | |
11528 | if (h->root.type == bfd_link_hash_indirect) | |
11529 | return TRUE; | |
11530 | ||
927be08e AM |
11531 | merge_got_entries (&h->got.glist); |
11532 | ||
11533 | return TRUE; | |
11534 | } | |
11535 | ||
11536 | /* Called via elf_link_hash_traverse to allocate GOT entries for global | |
11537 | symbol H. */ | |
11538 | ||
11539 | static bfd_boolean | |
11540 | reallocate_got (struct elf_link_hash_entry *h, void *inf) | |
11541 | { | |
11542 | struct got_entry *gent; | |
11543 | ||
11544 | if (h->root.type == bfd_link_hash_indirect) | |
11545 | return TRUE; | |
11546 | ||
927be08e AM |
11547 | for (gent = h->got.glist; gent != NULL; gent = gent->next) |
11548 | if (!gent->is_indirect) | |
11549 | allocate_got (h, (struct bfd_link_info *) inf, gent); | |
11550 | return TRUE; | |
11551 | } | |
11552 | ||
11553 | /* Called on the first multitoc pass after the last call to | |
11554 | ppc64_elf_next_toc_section. This function removes duplicate GOT | |
11555 | entries. */ | |
11556 | ||
11557 | bfd_boolean | |
11558 | ppc64_elf_layout_multitoc (struct bfd_link_info *info) | |
ad8e1ba5 AM |
11559 | { |
11560 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
927be08e AM |
11561 | struct bfd *ibfd, *ibfd2; |
11562 | bfd_boolean done_something; | |
11563 | ||
11564 | htab->multi_toc_needed = htab->toc_curr != elf_gp (info->output_bfd); | |
ad8e1ba5 | 11565 | |
7865406b AM |
11566 | if (!htab->do_multi_toc) |
11567 | return FALSE; | |
11568 | ||
d0fae19d | 11569 | /* Merge global sym got entries within a toc group. */ |
927be08e AM |
11570 | elf_link_hash_traverse (&htab->elf, merge_global_got, info); |
11571 | ||
11572 | /* And tlsld_got. */ | |
c72f2fb2 | 11573 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
927be08e AM |
11574 | { |
11575 | struct got_entry *ent, *ent2; | |
11576 | ||
11577 | if (!is_ppc64_elf (ibfd)) | |
11578 | continue; | |
11579 | ||
11580 | ent = ppc64_tlsld_got (ibfd); | |
11581 | if (!ent->is_indirect | |
11582 | && ent->got.offset != (bfd_vma) -1) | |
11583 | { | |
c72f2fb2 | 11584 | for (ibfd2 = ibfd->link.next; ibfd2 != NULL; ibfd2 = ibfd2->link.next) |
927be08e AM |
11585 | { |
11586 | if (!is_ppc64_elf (ibfd2)) | |
11587 | continue; | |
11588 | ||
11589 | ent2 = ppc64_tlsld_got (ibfd2); | |
11590 | if (!ent2->is_indirect | |
11591 | && ent2->got.offset != (bfd_vma) -1 | |
11592 | && elf_gp (ibfd2) == elf_gp (ibfd)) | |
11593 | { | |
11594 | ent2->is_indirect = TRUE; | |
11595 | ent2->got.ent = ent; | |
11596 | } | |
11597 | } | |
11598 | } | |
11599 | } | |
11600 | ||
11601 | /* Zap sizes of got sections. */ | |
33e44f2e AM |
11602 | htab->elf.irelplt->rawsize = htab->elf.irelplt->size; |
11603 | htab->elf.irelplt->size -= htab->got_reli_size; | |
927be08e AM |
11604 | htab->got_reli_size = 0; |
11605 | ||
c72f2fb2 | 11606 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
927be08e AM |
11607 | { |
11608 | asection *got, *relgot; | |
11609 | ||
11610 | if (!is_ppc64_elf (ibfd)) | |
11611 | continue; | |
11612 | ||
11613 | got = ppc64_elf_tdata (ibfd)->got; | |
11614 | if (got != NULL) | |
11615 | { | |
11616 | got->rawsize = got->size; | |
11617 | got->size = 0; | |
11618 | relgot = ppc64_elf_tdata (ibfd)->relgot; | |
11619 | relgot->rawsize = relgot->size; | |
11620 | relgot->size = 0; | |
11621 | } | |
11622 | } | |
11623 | ||
11624 | /* Now reallocate the got, local syms first. We don't need to | |
11625 | allocate section contents again since we never increase size. */ | |
c72f2fb2 | 11626 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
927be08e AM |
11627 | { |
11628 | struct got_entry **lgot_ents; | |
11629 | struct got_entry **end_lgot_ents; | |
11630 | struct plt_entry **local_plt; | |
11631 | struct plt_entry **end_local_plt; | |
f961d9dd | 11632 | unsigned char *lgot_masks; |
927be08e AM |
11633 | bfd_size_type locsymcount; |
11634 | Elf_Internal_Shdr *symtab_hdr; | |
19e08130 | 11635 | asection *s; |
927be08e AM |
11636 | |
11637 | if (!is_ppc64_elf (ibfd)) | |
11638 | continue; | |
11639 | ||
11640 | lgot_ents = elf_local_got_ents (ibfd); | |
11641 | if (!lgot_ents) | |
11642 | continue; | |
11643 | ||
11644 | symtab_hdr = &elf_symtab_hdr (ibfd); | |
11645 | locsymcount = symtab_hdr->sh_info; | |
11646 | end_lgot_ents = lgot_ents + locsymcount; | |
11647 | local_plt = (struct plt_entry **) end_lgot_ents; | |
11648 | end_local_plt = local_plt + locsymcount; | |
f961d9dd | 11649 | lgot_masks = (unsigned char *) end_local_plt; |
927be08e | 11650 | s = ppc64_elf_tdata (ibfd)->got; |
927be08e AM |
11651 | for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks) |
11652 | { | |
11653 | struct got_entry *ent; | |
11654 | ||
11655 | for (ent = *lgot_ents; ent != NULL; ent = ent->next) | |
d0fae19d | 11656 | { |
19e08130 AM |
11657 | unsigned int ent_size = 8; |
11658 | unsigned int rel_size = sizeof (Elf64_External_Rela); | |
11659 | ||
d0fae19d AM |
11660 | ent->got.offset = s->size; |
11661 | if ((ent->tls_type & *lgot_masks & TLS_GD) != 0) | |
d0fae19d | 11662 | { |
19e08130 AM |
11663 | ent_size *= 2; |
11664 | rel_size *= 2; | |
11665 | } | |
11666 | s->size += ent_size; | |
11667 | if ((*lgot_masks & PLT_IFUNC) != 0) | |
11668 | { | |
33e44f2e | 11669 | htab->elf.irelplt->size += rel_size; |
19e08130 AM |
11670 | htab->got_reli_size += rel_size; |
11671 | } | |
0e1862bb | 11672 | else if (bfd_link_pic (info)) |
19e08130 AM |
11673 | { |
11674 | asection *srel = ppc64_elf_tdata (ibfd)->relgot; | |
11675 | srel->size += rel_size; | |
d0fae19d AM |
11676 | } |
11677 | } | |
927be08e AM |
11678 | } |
11679 | } | |
11680 | ||
11681 | elf_link_hash_traverse (&htab->elf, reallocate_got, info); | |
11682 | ||
c72f2fb2 | 11683 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
927be08e AM |
11684 | { |
11685 | struct got_entry *ent; | |
11686 | ||
11687 | if (!is_ppc64_elf (ibfd)) | |
11688 | continue; | |
11689 | ||
11690 | ent = ppc64_tlsld_got (ibfd); | |
11691 | if (!ent->is_indirect | |
11692 | && ent->got.offset != (bfd_vma) -1) | |
11693 | { | |
11694 | asection *s = ppc64_elf_tdata (ibfd)->got; | |
11695 | ent->got.offset = s->size; | |
11696 | s->size += 16; | |
0e1862bb | 11697 | if (bfd_link_pic (info)) |
927be08e AM |
11698 | { |
11699 | asection *srel = ppc64_elf_tdata (ibfd)->relgot; | |
11700 | srel->size += sizeof (Elf64_External_Rela); | |
11701 | } | |
11702 | } | |
11703 | } | |
11704 | ||
33e44f2e | 11705 | done_something = htab->elf.irelplt->rawsize != htab->elf.irelplt->size; |
927be08e | 11706 | if (!done_something) |
c72f2fb2 | 11707 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
927be08e AM |
11708 | { |
11709 | asection *got; | |
11710 | ||
11711 | if (!is_ppc64_elf (ibfd)) | |
11712 | continue; | |
11713 | ||
11714 | got = ppc64_elf_tdata (ibfd)->got; | |
11715 | if (got != NULL) | |
11716 | { | |
11717 | done_something = got->rawsize != got->size; | |
11718 | if (done_something) | |
11719 | break; | |
11720 | } | |
11721 | } | |
11722 | ||
11723 | if (done_something) | |
e7d1c40c | 11724 | (*htab->params->layout_sections_again) (); |
927be08e AM |
11725 | |
11726 | /* Set up for second pass over toc sections to recalculate elf_gp | |
11727 | on input sections. */ | |
11728 | htab->toc_bfd = NULL; | |
11729 | htab->toc_first_sec = NULL; | |
11730 | htab->second_toc_pass = TRUE; | |
11731 | return done_something; | |
11732 | } | |
11733 | ||
11734 | /* Called after second pass of multitoc partitioning. */ | |
11735 | ||
11736 | void | |
11737 | ppc64_elf_finish_multitoc_partition (struct bfd_link_info *info) | |
11738 | { | |
11739 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
11740 | ||
11741 | /* After the second pass, toc_curr tracks the TOC offset used | |
11742 | for code sections below in ppc64_elf_next_input_section. */ | |
3d6f9012 | 11743 | htab->toc_curr = TOC_BASE_OFF; |
ad8e1ba5 AM |
11744 | } |
11745 | ||
9b5ecbd0 AM |
11746 | /* No toc references were found in ISEC. If the code in ISEC makes no |
11747 | calls, then there's no need to use toc adjusting stubs when branching | |
11748 | into ISEC. Actually, indirect calls from ISEC are OK as they will | |
4c52953f AM |
11749 | load r2. Returns -1 on error, 0 for no stub needed, 1 for stub |
11750 | needed, and 2 if a cyclical call-graph was found but no other reason | |
11751 | for a stub was detected. If called from the top level, a return of | |
11752 | 2 means the same as a return of 0. */ | |
9b5ecbd0 AM |
11753 | |
11754 | static int | |
4ce794b7 | 11755 | toc_adjusting_stub_needed (struct bfd_link_info *info, asection *isec) |
9b5ecbd0 | 11756 | { |
9b5ecbd0 | 11757 | int ret; |
70cc837d AM |
11758 | |
11759 | /* Mark this section as checked. */ | |
11760 | isec->call_check_done = 1; | |
9b5ecbd0 | 11761 | |
772119ce AM |
11762 | /* We know none of our code bearing sections will need toc stubs. */ |
11763 | if ((isec->flags & SEC_LINKER_CREATED) != 0) | |
11764 | return 0; | |
11765 | ||
eea6121a | 11766 | if (isec->size == 0) |
082c50f8 AM |
11767 | return 0; |
11768 | ||
4c52953f AM |
11769 | if (isec->output_section == NULL) |
11770 | return 0; | |
11771 | ||
4c52953f | 11772 | ret = 0; |
70cc837d | 11773 | if (isec->reloc_count != 0) |
9b5ecbd0 | 11774 | { |
70cc837d AM |
11775 | Elf_Internal_Rela *relstart, *rel; |
11776 | Elf_Internal_Sym *local_syms; | |
11777 | struct ppc_link_hash_table *htab; | |
2917689a | 11778 | |
70cc837d AM |
11779 | relstart = _bfd_elf_link_read_relocs (isec->owner, isec, NULL, NULL, |
11780 | info->keep_memory); | |
11781 | if (relstart == NULL) | |
11782 | return -1; | |
90aecf7a | 11783 | |
70cc837d AM |
11784 | /* Look for branches to outside of this section. */ |
11785 | local_syms = NULL; | |
11786 | htab = ppc_hash_table (info); | |
11787 | if (htab == NULL) | |
11788 | return -1; | |
4c52953f | 11789 | |
70cc837d | 11790 | for (rel = relstart; rel < relstart + isec->reloc_count; ++rel) |
4c52953f | 11791 | { |
70cc837d AM |
11792 | enum elf_ppc64_reloc_type r_type; |
11793 | unsigned long r_symndx; | |
11794 | struct elf_link_hash_entry *h; | |
11795 | struct ppc_link_hash_entry *eh; | |
11796 | Elf_Internal_Sym *sym; | |
11797 | asection *sym_sec; | |
11798 | struct _opd_sec_data *opd; | |
11799 | bfd_vma sym_value; | |
11800 | bfd_vma dest; | |
11801 | ||
11802 | r_type = ELF64_R_TYPE (rel->r_info); | |
11803 | if (r_type != R_PPC64_REL24 | |
11804 | && r_type != R_PPC64_REL14 | |
11805 | && r_type != R_PPC64_REL14_BRTAKEN | |
11806 | && r_type != R_PPC64_REL14_BRNTAKEN) | |
11807 | continue; | |
4c52953f | 11808 | |
70cc837d AM |
11809 | r_symndx = ELF64_R_SYM (rel->r_info); |
11810 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, r_symndx, | |
11811 | isec->owner)) | |
4c52953f | 11812 | { |
70cc837d AM |
11813 | ret = -1; |
11814 | break; | |
11815 | } | |
4c52953f | 11816 | |
70cc837d AM |
11817 | /* Calls to dynamic lib functions go through a plt call stub |
11818 | that uses r2. */ | |
11819 | eh = (struct ppc_link_hash_entry *) h; | |
11820 | if (eh != NULL | |
11821 | && (eh->elf.plt.plist != NULL | |
11822 | || (eh->oh != NULL | |
11823 | && ppc_follow_link (eh->oh)->elf.plt.plist != NULL))) | |
11824 | { | |
11825 | ret = 1; | |
11826 | break; | |
4c52953f AM |
11827 | } |
11828 | ||
70cc837d AM |
11829 | if (sym_sec == NULL) |
11830 | /* Ignore other undefined symbols. */ | |
4c52953f | 11831 | continue; |
4c52953f | 11832 | |
70cc837d AM |
11833 | /* Assume branches to other sections not included in the |
11834 | link need stubs too, to cover -R and absolute syms. */ | |
11835 | if (sym_sec->output_section == NULL) | |
11836 | { | |
11837 | ret = 1; | |
11838 | break; | |
11839 | } | |
4c52953f | 11840 | |
70cc837d AM |
11841 | if (h == NULL) |
11842 | sym_value = sym->st_value; | |
11843 | else | |
11844 | { | |
11845 | if (h->root.type != bfd_link_hash_defined | |
11846 | && h->root.type != bfd_link_hash_defweak) | |
11847 | abort (); | |
11848 | sym_value = h->root.u.def.value; | |
11849 | } | |
11850 | sym_value += rel->r_addend; | |
4c52953f | 11851 | |
70cc837d AM |
11852 | /* If this branch reloc uses an opd sym, find the code section. */ |
11853 | opd = get_opd_info (sym_sec); | |
11854 | if (opd != NULL) | |
11855 | { | |
11856 | if (h == NULL && opd->adjust != NULL) | |
11857 | { | |
11858 | long adjust; | |
4c52953f | 11859 | |
92a9c616 | 11860 | adjust = opd->adjust[OPD_NDX (sym_value)]; |
70cc837d AM |
11861 | if (adjust == -1) |
11862 | /* Assume deleted functions won't ever be called. */ | |
11863 | continue; | |
11864 | sym_value += adjust; | |
11865 | } | |
4c52953f | 11866 | |
aef36ac1 AM |
11867 | dest = opd_entry_value (sym_sec, sym_value, |
11868 | &sym_sec, NULL, FALSE); | |
70cc837d AM |
11869 | if (dest == (bfd_vma) -1) |
11870 | continue; | |
11871 | } | |
11872 | else | |
11873 | dest = (sym_value | |
11874 | + sym_sec->output_offset | |
11875 | + sym_sec->output_section->vma); | |
4c52953f | 11876 | |
70cc837d AM |
11877 | /* Ignore branch to self. */ |
11878 | if (sym_sec == isec) | |
11879 | continue; | |
4c52953f | 11880 | |
70cc837d AM |
11881 | /* If the called function uses the toc, we need a stub. */ |
11882 | if (sym_sec->has_toc_reloc | |
11883 | || sym_sec->makes_toc_func_call) | |
4c52953f | 11884 | { |
70cc837d | 11885 | ret = 1; |
4c52953f AM |
11886 | break; |
11887 | } | |
70cc837d AM |
11888 | |
11889 | /* Assume any branch that needs a long branch stub might in fact | |
11890 | need a plt_branch stub. A plt_branch stub uses r2. */ | |
11891 | else if (dest - (isec->output_offset | |
11892 | + isec->output_section->vma | |
6911b7dc AM |
11893 | + rel->r_offset) + (1 << 25) |
11894 | >= (2u << 25) - PPC64_LOCAL_ENTRY_OFFSET (h | |
11895 | ? h->other | |
11896 | : sym->st_other)) | |
4c52953f | 11897 | { |
70cc837d AM |
11898 | ret = 1; |
11899 | break; | |
11900 | } | |
11901 | ||
11902 | /* If calling back to a section in the process of being | |
11903 | tested, we can't say for sure that no toc adjusting stubs | |
11904 | are needed, so don't return zero. */ | |
11905 | else if (sym_sec->call_check_in_progress) | |
11906 | ret = 2; | |
11907 | ||
11908 | /* Branches to another section that itself doesn't have any TOC | |
11909 | references are OK. Recursively call ourselves to check. */ | |
11910 | else if (!sym_sec->call_check_done) | |
11911 | { | |
11912 | int recur; | |
11913 | ||
11914 | /* Mark current section as indeterminate, so that other | |
11915 | sections that call back to current won't be marked as | |
11916 | known. */ | |
11917 | isec->call_check_in_progress = 1; | |
11918 | recur = toc_adjusting_stub_needed (info, sym_sec); | |
11919 | isec->call_check_in_progress = 0; | |
11920 | ||
4c52953f AM |
11921 | if (recur != 0) |
11922 | { | |
70cc837d AM |
11923 | ret = recur; |
11924 | if (recur != 2) | |
11925 | break; | |
4c52953f AM |
11926 | } |
11927 | } | |
4c52953f | 11928 | } |
70cc837d AM |
11929 | |
11930 | if (local_syms != NULL | |
11931 | && (elf_symtab_hdr (isec->owner).contents | |
11932 | != (unsigned char *) local_syms)) | |
11933 | free (local_syms); | |
11934 | if (elf_section_data (isec)->relocs != relstart) | |
11935 | free (relstart); | |
9b5ecbd0 AM |
11936 | } |
11937 | ||
70cc837d AM |
11938 | if ((ret & 1) == 0 |
11939 | && isec->map_head.s != NULL | |
11940 | && (strcmp (isec->output_section->name, ".init") == 0 | |
11941 | || strcmp (isec->output_section->name, ".fini") == 0)) | |
11942 | { | |
11943 | if (isec->map_head.s->has_toc_reloc | |
11944 | || isec->map_head.s->makes_toc_func_call) | |
11945 | ret = 1; | |
11946 | else if (!isec->map_head.s->call_check_done) | |
11947 | { | |
11948 | int recur; | |
11949 | isec->call_check_in_progress = 1; | |
11950 | recur = toc_adjusting_stub_needed (info, isec->map_head.s); | |
11951 | isec->call_check_in_progress = 0; | |
11952 | if (recur != 0) | |
11953 | ret = recur; | |
11954 | } | |
11955 | } | |
11956 | ||
11957 | if (ret == 1) | |
11958 | isec->makes_toc_func_call = 1; | |
4c52953f | 11959 | |
9b5ecbd0 AM |
11960 | return ret; |
11961 | } | |
11962 | ||
721956f4 AM |
11963 | /* The linker repeatedly calls this function for each input section, |
11964 | in the order that input sections are linked into output sections. | |
11965 | Build lists of input sections to determine groupings between which | |
11966 | we may insert linker stubs. */ | |
11967 | ||
9b5ecbd0 | 11968 | bfd_boolean |
4ce794b7 | 11969 | ppc64_elf_next_input_section (struct bfd_link_info *info, asection *isec) |
721956f4 AM |
11970 | { |
11971 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
11972 | ||
4dfe6ac6 NC |
11973 | if (htab == NULL) |
11974 | return FALSE; | |
11975 | ||
734b6cf9 | 11976 | if ((isec->output_section->flags & SEC_CODE) != 0 |
6f20ed8a | 11977 | && isec->output_section->id < htab->sec_info_arr_size) |
721956f4 | 11978 | { |
3d6f9012 AM |
11979 | /* This happens to make the list in reverse order, |
11980 | which is what we want. */ | |
6f20ed8a AM |
11981 | htab->sec_info[isec->id].u.list |
11982 | = htab->sec_info[isec->output_section->id].u.list; | |
11983 | htab->sec_info[isec->output_section->id].u.list = isec; | |
721956f4 | 11984 | } |
ad8e1ba5 | 11985 | |
4c52953f | 11986 | if (htab->multi_toc_needed) |
9b5ecbd0 | 11987 | { |
8b974ba3 AM |
11988 | /* Analyse sections that aren't already flagged as needing a |
11989 | valid toc pointer. Exclude .fixup for the linux kernel. | |
11990 | .fixup contains branches, but only back to the function that | |
11991 | hit an exception. */ | |
11992 | if (!(isec->has_toc_reloc | |
11993 | || (isec->flags & SEC_CODE) == 0 | |
11994 | || strcmp (isec->name, ".fixup") == 0 | |
11995 | || isec->call_check_done)) | |
11996 | { | |
11997 | if (toc_adjusting_stub_needed (info, isec) < 0) | |
6683a28d | 11998 | return FALSE; |
8b974ba3 AM |
11999 | } |
12000 | /* Make all sections use the TOC assigned for this object file. | |
12001 | This will be wrong for pasted sections; We fix that in | |
12002 | check_pasted_section(). */ | |
12003 | if (elf_gp (isec->owner) != 0) | |
12004 | htab->toc_curr = elf_gp (isec->owner); | |
12005 | } | |
12006 | ||
6f20ed8a | 12007 | htab->sec_info[isec->id].toc_off = htab->toc_curr; |
9b5ecbd0 | 12008 | return TRUE; |
721956f4 AM |
12009 | } |
12010 | ||
70cc837d AM |
12011 | /* Check that all .init and .fini sections use the same toc, if they |
12012 | have toc relocs. */ | |
12013 | ||
12014 | static bfd_boolean | |
12015 | check_pasted_section (struct bfd_link_info *info, const char *name) | |
12016 | { | |
12017 | asection *o = bfd_get_section_by_name (info->output_bfd, name); | |
12018 | ||
12019 | if (o != NULL) | |
12020 | { | |
12021 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
12022 | bfd_vma toc_off = 0; | |
12023 | asection *i; | |
12024 | ||
12025 | for (i = o->map_head.s; i != NULL; i = i->map_head.s) | |
12026 | if (i->has_toc_reloc) | |
12027 | { | |
12028 | if (toc_off == 0) | |
6f20ed8a AM |
12029 | toc_off = htab->sec_info[i->id].toc_off; |
12030 | else if (toc_off != htab->sec_info[i->id].toc_off) | |
70cc837d AM |
12031 | return FALSE; |
12032 | } | |
6683a28d AM |
12033 | |
12034 | if (toc_off == 0) | |
12035 | for (i = o->map_head.s; i != NULL; i = i->map_head.s) | |
12036 | if (i->makes_toc_func_call) | |
12037 | { | |
6f20ed8a | 12038 | toc_off = htab->sec_info[i->id].toc_off; |
6683a28d AM |
12039 | break; |
12040 | } | |
12041 | ||
70cc837d AM |
12042 | /* Make sure the whole pasted function uses the same toc offset. */ |
12043 | if (toc_off != 0) | |
12044 | for (i = o->map_head.s; i != NULL; i = i->map_head.s) | |
6f20ed8a | 12045 | htab->sec_info[i->id].toc_off = toc_off; |
70cc837d AM |
12046 | } |
12047 | return TRUE; | |
12048 | } | |
12049 | ||
12050 | bfd_boolean | |
12051 | ppc64_elf_check_init_fini (struct bfd_link_info *info) | |
12052 | { | |
12053 | return (check_pasted_section (info, ".init") | |
12054 | & check_pasted_section (info, ".fini")); | |
12055 | } | |
12056 | ||
721956f4 AM |
12057 | /* See whether we can group stub sections together. Grouping stub |
12058 | sections may result in fewer stubs. More importantly, we need to | |
12059 | put all .init* and .fini* stubs at the beginning of the .init or | |
12060 | .fini output sections respectively, because glibc splits the | |
12061 | _init and _fini functions into multiple parts. Putting a stub in | |
12062 | the middle of a function is not a good idea. */ | |
12063 | ||
6f20ed8a AM |
12064 | static bfd_boolean |
12065 | group_sections (struct bfd_link_info *info, | |
4ce794b7 AM |
12066 | bfd_size_type stub_group_size, |
12067 | bfd_boolean stubs_always_before_branch) | |
721956f4 | 12068 | { |
6f20ed8a AM |
12069 | struct ppc_link_hash_table *htab; |
12070 | asection *osec; | |
7c8fe5c4 AM |
12071 | bfd_boolean suppress_size_errors; |
12072 | ||
6f20ed8a AM |
12073 | htab = ppc_hash_table (info); |
12074 | if (htab == NULL) | |
12075 | return FALSE; | |
12076 | ||
7c8fe5c4 | 12077 | suppress_size_errors = FALSE; |
7c8fe5c4 AM |
12078 | if (stub_group_size == 1) |
12079 | { | |
12080 | /* Default values. */ | |
12081 | if (stubs_always_before_branch) | |
09f92717 | 12082 | stub_group_size = 0x1e00000; |
7c8fe5c4 | 12083 | else |
09f92717 | 12084 | stub_group_size = 0x1c00000; |
7c8fe5c4 AM |
12085 | suppress_size_errors = TRUE; |
12086 | } | |
12087 | ||
6f20ed8a | 12088 | for (osec = info->output_bfd->sections; osec != NULL; osec = osec->next) |
721956f4 | 12089 | { |
6f20ed8a AM |
12090 | asection *tail; |
12091 | ||
12092 | if (osec->id >= htab->sec_info_arr_size) | |
12093 | continue; | |
12094 | ||
12095 | tail = htab->sec_info[osec->id].u.list; | |
734b6cf9 | 12096 | while (tail != NULL) |
721956f4 | 12097 | { |
734b6cf9 AM |
12098 | asection *curr; |
12099 | asection *prev; | |
12100 | bfd_size_type total; | |
12101 | bfd_boolean big_sec; | |
12102 | bfd_vma curr_toc; | |
6f20ed8a | 12103 | struct map_stub *group; |
09f92717 | 12104 | bfd_size_type group_size; |
734b6cf9 AM |
12105 | |
12106 | curr = tail; | |
eea6121a | 12107 | total = tail->size; |
09f92717 AM |
12108 | group_size = (ppc64_elf_section_data (tail) != NULL |
12109 | && ppc64_elf_section_data (tail)->has_14bit_branch | |
12110 | ? stub_group_size >> 10 : stub_group_size); | |
12111 | ||
12112 | big_sec = total > group_size; | |
7c8fe5c4 | 12113 | if (big_sec && !suppress_size_errors) |
695344c0 | 12114 | /* xgettext:c-format */ |
4eca0228 AM |
12115 | _bfd_error_handler (_("%B section %A exceeds stub group size"), |
12116 | tail->owner, tail); | |
6f20ed8a | 12117 | curr_toc = htab->sec_info[tail->id].toc_off; |
734b6cf9 | 12118 | |
6f20ed8a | 12119 | while ((prev = htab->sec_info[curr->id].u.list) != NULL |
734b6cf9 | 12120 | && ((total += curr->output_offset - prev->output_offset) |
6bee8834 AM |
12121 | < (ppc64_elf_section_data (prev) != NULL |
12122 | && ppc64_elf_section_data (prev)->has_14bit_branch | |
09f92717 | 12123 | ? (group_size = stub_group_size >> 10) : group_size)) |
6f20ed8a | 12124 | && htab->sec_info[prev->id].toc_off == curr_toc) |
734b6cf9 AM |
12125 | curr = prev; |
12126 | ||
12127 | /* OK, the size from the start of CURR to the end is less | |
09f92717 | 12128 | than group_size and thus can be handled by one stub |
734b6cf9 | 12129 | section. (or the tail section is itself larger than |
09f92717 AM |
12130 | group_size, in which case we may be toast.) We should |
12131 | really be keeping track of the total size of stubs added | |
12132 | here, as stubs contribute to the final output section | |
12133 | size. That's a little tricky, and this way will only | |
12134 | break if stubs added make the total size more than 2^25, | |
12135 | ie. for the default stub_group_size, if stubs total more | |
12136 | than 2097152 bytes, or nearly 75000 plt call stubs. */ | |
6f20ed8a AM |
12137 | group = bfd_alloc (curr->owner, sizeof (*group)); |
12138 | if (group == NULL) | |
12139 | return FALSE; | |
12140 | group->link_sec = curr; | |
12141 | group->stub_sec = NULL; | |
a4b6fadd AM |
12142 | group->needs_save_res = 0; |
12143 | group->next = htab->group; | |
12144 | htab->group = group; | |
734b6cf9 | 12145 | do |
721956f4 | 12146 | { |
6f20ed8a | 12147 | prev = htab->sec_info[tail->id].u.list; |
734b6cf9 | 12148 | /* Set up this stub group. */ |
6f20ed8a | 12149 | htab->sec_info[tail->id].u.group = group; |
721956f4 | 12150 | } |
734b6cf9 AM |
12151 | while (tail != curr && (tail = prev) != NULL); |
12152 | ||
09f92717 | 12153 | /* But wait, there's more! Input sections up to group_size |
734b6cf9 AM |
12154 | bytes before the stub section can be handled by it too. |
12155 | Don't do this if we have a really large section after the | |
12156 | stubs, as adding more stubs increases the chance that | |
12157 | branches may not reach into the stub section. */ | |
12158 | if (!stubs_always_before_branch && !big_sec) | |
12159 | { | |
12160 | total = 0; | |
12161 | while (prev != NULL | |
12162 | && ((total += tail->output_offset - prev->output_offset) | |
6bee8834 AM |
12163 | < (ppc64_elf_section_data (prev) != NULL |
12164 | && ppc64_elf_section_data (prev)->has_14bit_branch | |
09f92717 | 12165 | ? (group_size = stub_group_size >> 10) : group_size)) |
6f20ed8a | 12166 | && htab->sec_info[prev->id].toc_off == curr_toc) |
734b6cf9 AM |
12167 | { |
12168 | tail = prev; | |
6f20ed8a AM |
12169 | prev = htab->sec_info[tail->id].u.list; |
12170 | htab->sec_info[tail->id].u.group = group; | |
734b6cf9 AM |
12171 | } |
12172 | } | |
12173 | tail = prev; | |
721956f4 AM |
12174 | } |
12175 | } | |
6f20ed8a | 12176 | return TRUE; |
721956f4 AM |
12177 | } |
12178 | ||
58d180e8 AM |
12179 | static const unsigned char glink_eh_frame_cie[] = |
12180 | { | |
12181 | 0, 0, 0, 16, /* length. */ | |
12182 | 0, 0, 0, 0, /* id. */ | |
12183 | 1, /* CIE version. */ | |
12184 | 'z', 'R', 0, /* Augmentation string. */ | |
12185 | 4, /* Code alignment. */ | |
12186 | 0x78, /* Data alignment. */ | |
12187 | 65, /* RA reg. */ | |
12188 | 1, /* Augmentation size. */ | |
12189 | DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding. */ | |
da44f4e5 AM |
12190 | DW_CFA_def_cfa, 1, 0, /* def_cfa: r1 offset 0. */ |
12191 | 0, 0, 0, 0 | |
58d180e8 AM |
12192 | }; |
12193 | ||
d969d15f AM |
12194 | /* Stripping output sections is normally done before dynamic section |
12195 | symbols have been allocated. This function is called later, and | |
12196 | handles cases like htab->brlt which is mapped to its own output | |
12197 | section. */ | |
12198 | ||
12199 | static void | |
12200 | maybe_strip_output (struct bfd_link_info *info, asection *isec) | |
12201 | { | |
12202 | if (isec->size == 0 | |
12203 | && isec->output_section->size == 0 | |
53d8967a | 12204 | && !(isec->output_section->flags & SEC_KEEP) |
d969d15f AM |
12205 | && !bfd_section_removed_from_list (info->output_bfd, |
12206 | isec->output_section) | |
12207 | && elf_section_data (isec->output_section)->dynindx == 0) | |
12208 | { | |
12209 | isec->output_section->flags |= SEC_EXCLUDE; | |
12210 | bfd_section_list_remove (info->output_bfd, isec->output_section); | |
12211 | info->output_bfd->section_count--; | |
12212 | } | |
12213 | } | |
12214 | ||
721956f4 AM |
12215 | /* Determine and set the size of the stub section for a final link. |
12216 | ||
12217 | The basic idea here is to examine all the relocations looking for | |
12218 | PC-relative calls to a target that is unreachable with a "bl" | |
12219 | instruction. */ | |
12220 | ||
b34976b6 | 12221 | bfd_boolean |
e7d1c40c | 12222 | ppc64_elf_size_stubs (struct bfd_link_info *info) |
721956f4 AM |
12223 | { |
12224 | bfd_size_type stub_group_size; | |
b34976b6 | 12225 | bfd_boolean stubs_always_before_branch; |
721956f4 AM |
12226 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
12227 | ||
4dfe6ac6 NC |
12228 | if (htab == NULL) |
12229 | return FALSE; | |
12230 | ||
0e1862bb | 12231 | if (htab->params->plt_thread_safe == -1 && !bfd_link_executable (info)) |
e7d1c40c | 12232 | htab->params->plt_thread_safe = 1; |
b9e5796b | 12233 | if (!htab->opd_abi) |
e7d1c40c AM |
12234 | htab->params->plt_thread_safe = 0; |
12235 | else if (htab->params->plt_thread_safe == -1) | |
794e51c0 | 12236 | { |
e2458743 | 12237 | static const char *const thread_starter[] = |
794e51c0 AM |
12238 | { |
12239 | "pthread_create", | |
12240 | /* libstdc++ */ | |
12241 | "_ZNSt6thread15_M_start_threadESt10shared_ptrINS_10_Impl_baseEE", | |
12242 | /* librt */ | |
12243 | "aio_init", "aio_read", "aio_write", "aio_fsync", "lio_listio", | |
12244 | "mq_notify", "create_timer", | |
12245 | /* libanl */ | |
12246 | "getaddrinfo_a", | |
12247 | /* libgomp */ | |
2300b5a1 | 12248 | "GOMP_parallel", |
794e51c0 | 12249 | "GOMP_parallel_start", |
2300b5a1 | 12250 | "GOMP_parallel_loop_static", |
794e51c0 | 12251 | "GOMP_parallel_loop_static_start", |
2300b5a1 | 12252 | "GOMP_parallel_loop_dynamic", |
794e51c0 | 12253 | "GOMP_parallel_loop_dynamic_start", |
2300b5a1 | 12254 | "GOMP_parallel_loop_guided", |
794e51c0 | 12255 | "GOMP_parallel_loop_guided_start", |
2300b5a1 | 12256 | "GOMP_parallel_loop_runtime", |
794e51c0 | 12257 | "GOMP_parallel_loop_runtime_start", |
2300b5a1 | 12258 | "GOMP_parallel_sections", |
68ffbac6 | 12259 | "GOMP_parallel_sections_start", |
f9dffbf0 AM |
12260 | /* libgo */ |
12261 | "__go_go", | |
794e51c0 AM |
12262 | }; |
12263 | unsigned i; | |
12264 | ||
a4b6fadd | 12265 | for (i = 0; i < ARRAY_SIZE (thread_starter); i++) |
794e51c0 AM |
12266 | { |
12267 | struct elf_link_hash_entry *h; | |
12268 | h = elf_link_hash_lookup (&htab->elf, thread_starter[i], | |
12269 | FALSE, FALSE, TRUE); | |
e7d1c40c AM |
12270 | htab->params->plt_thread_safe = h != NULL && h->ref_regular; |
12271 | if (htab->params->plt_thread_safe) | |
794e51c0 AM |
12272 | break; |
12273 | } | |
12274 | } | |
e7d1c40c AM |
12275 | stubs_always_before_branch = htab->params->group_size < 0; |
12276 | if (htab->params->group_size < 0) | |
12277 | stub_group_size = -htab->params->group_size; | |
721956f4 | 12278 | else |
e7d1c40c | 12279 | stub_group_size = htab->params->group_size; |
721956f4 | 12280 | |
6f20ed8a AM |
12281 | if (!group_sections (info, stub_group_size, stubs_always_before_branch)) |
12282 | return FALSE; | |
721956f4 | 12283 | |
c9301e31 AM |
12284 | #define STUB_SHRINK_ITER 20 |
12285 | /* Loop until no stubs added. After iteration 20 of this loop we may | |
12286 | exit on a stub section shrinking. This is to break out of a | |
12287 | pathological case where adding stubs on one iteration decreases | |
12288 | section gaps (perhaps due to alignment), which then requires | |
12289 | fewer or smaller stubs on the next iteration. */ | |
12290 | ||
721956f4 AM |
12291 | while (1) |
12292 | { | |
12293 | bfd *input_bfd; | |
12294 | unsigned int bfd_indx; | |
a4b6fadd | 12295 | struct map_stub *group; |
721956f4 | 12296 | asection *stub_sec; |
721956f4 AM |
12297 | |
12298 | htab->stub_iteration += 1; | |
721956f4 AM |
12299 | |
12300 | for (input_bfd = info->input_bfds, bfd_indx = 0; | |
12301 | input_bfd != NULL; | |
c72f2fb2 | 12302 | input_bfd = input_bfd->link.next, bfd_indx++) |
721956f4 AM |
12303 | { |
12304 | Elf_Internal_Shdr *symtab_hdr; | |
12305 | asection *section; | |
6cdc0ccc | 12306 | Elf_Internal_Sym *local_syms = NULL; |
721956f4 | 12307 | |
0c8d6e5c | 12308 | if (!is_ppc64_elf (input_bfd)) |
67f93c31 AM |
12309 | continue; |
12310 | ||
721956f4 | 12311 | /* We'll need the symbol table in a second. */ |
0ffa91dd | 12312 | symtab_hdr = &elf_symtab_hdr (input_bfd); |
721956f4 AM |
12313 | if (symtab_hdr->sh_info == 0) |
12314 | continue; | |
12315 | ||
721956f4 AM |
12316 | /* Walk over each section attached to the input bfd. */ |
12317 | for (section = input_bfd->sections; | |
12318 | section != NULL; | |
12319 | section = section->next) | |
12320 | { | |
721956f4 | 12321 | Elf_Internal_Rela *internal_relocs, *irelaend, *irela; |
721956f4 AM |
12322 | |
12323 | /* If there aren't any relocs, then there's nothing more | |
12324 | to do. */ | |
12325 | if ((section->flags & SEC_RELOC) == 0 | |
12c0f757 AM |
12326 | || (section->flags & SEC_ALLOC) == 0 |
12327 | || (section->flags & SEC_LOAD) == 0 | |
12328 | || (section->flags & SEC_CODE) == 0 | |
721956f4 AM |
12329 | || section->reloc_count == 0) |
12330 | continue; | |
12331 | ||
12332 | /* If this section is a link-once section that will be | |
12333 | discarded, then don't create any stubs. */ | |
12334 | if (section->output_section == NULL | |
927be08e | 12335 | || section->output_section->owner != info->output_bfd) |
721956f4 AM |
12336 | continue; |
12337 | ||
1e2f5b6e AM |
12338 | /* Get the relocs. */ |
12339 | internal_relocs | |
4ce794b7 | 12340 | = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL, |
45d6a902 | 12341 | info->keep_memory); |
721956f4 | 12342 | if (internal_relocs == NULL) |
1e2f5b6e | 12343 | goto error_ret_free_local; |
721956f4 AM |
12344 | |
12345 | /* Now examine each relocation. */ | |
12346 | irela = internal_relocs; | |
12347 | irelaend = irela + section->reloc_count; | |
12348 | for (; irela < irelaend; irela++) | |
12349 | { | |
4ce794b7 AM |
12350 | enum elf_ppc64_reloc_type r_type; |
12351 | unsigned int r_indx; | |
721956f4 AM |
12352 | enum ppc_stub_type stub_type; |
12353 | struct ppc_stub_hash_entry *stub_entry; | |
8387904d | 12354 | asection *sym_sec, *code_sec; |
e054468f | 12355 | bfd_vma sym_value, code_value; |
721956f4 | 12356 | bfd_vma destination; |
6911b7dc | 12357 | unsigned long local_off; |
8843416a | 12358 | bfd_boolean ok_dest; |
721956f4 | 12359 | struct ppc_link_hash_entry *hash; |
8387904d | 12360 | struct ppc_link_hash_entry *fdh; |
411e1bfb AM |
12361 | struct elf_link_hash_entry *h; |
12362 | Elf_Internal_Sym *sym; | |
721956f4 AM |
12363 | char *stub_name; |
12364 | const asection *id_sec; | |
74f0fb50 | 12365 | struct _opd_sec_data *opd; |
e054468f | 12366 | struct plt_entry *plt_ent; |
721956f4 AM |
12367 | |
12368 | r_type = ELF64_R_TYPE (irela->r_info); | |
12369 | r_indx = ELF64_R_SYM (irela->r_info); | |
12370 | ||
4ce794b7 | 12371 | if (r_type >= R_PPC64_max) |
721956f4 AM |
12372 | { |
12373 | bfd_set_error (bfd_error_bad_value); | |
6cdc0ccc | 12374 | goto error_ret_free_internal; |
721956f4 AM |
12375 | } |
12376 | ||
12377 | /* Only look for stubs on branch instructions. */ | |
4ce794b7 AM |
12378 | if (r_type != R_PPC64_REL24 |
12379 | && r_type != R_PPC64_REL14 | |
12380 | && r_type != R_PPC64_REL14_BRTAKEN | |
12381 | && r_type != R_PPC64_REL14_BRNTAKEN) | |
721956f4 AM |
12382 | continue; |
12383 | ||
12384 | /* Now determine the call target, its name, value, | |
12385 | section. */ | |
411e1bfb AM |
12386 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, |
12387 | r_indx, input_bfd)) | |
12388 | goto error_ret_free_internal; | |
12389 | hash = (struct ppc_link_hash_entry *) h; | |
12390 | ||
8843416a | 12391 | ok_dest = FALSE; |
8387904d | 12392 | fdh = NULL; |
7fe2b9a6 | 12393 | sym_value = 0; |
411e1bfb | 12394 | if (hash == NULL) |
721956f4 | 12395 | { |
411e1bfb | 12396 | sym_value = sym->st_value; |
c27b8c2a AM |
12397 | if (sym_sec != NULL |
12398 | && sym_sec->output_section != NULL) | |
12399 | ok_dest = TRUE; | |
721956f4 | 12400 | } |
7fe2b9a6 AM |
12401 | else if (hash->elf.root.type == bfd_link_hash_defined |
12402 | || hash->elf.root.type == bfd_link_hash_defweak) | |
12403 | { | |
12404 | sym_value = hash->elf.root.u.def.value; | |
12405 | if (sym_sec->output_section != NULL) | |
12406 | ok_dest = TRUE; | |
12407 | } | |
12408 | else if (hash->elf.root.type == bfd_link_hash_undefweak | |
12409 | || hash->elf.root.type == bfd_link_hash_undefined) | |
721956f4 | 12410 | { |
99877b66 | 12411 | /* Recognise an old ABI func code entry sym, and |
7fe2b9a6 AM |
12412 | use the func descriptor sym instead if it is |
12413 | defined. */ | |
ceb1f1ef | 12414 | if (hash->elf.root.root.string[0] == '.' |
b31867b6 | 12415 | && (fdh = lookup_fdh (hash, htab)) != NULL) |
8387904d | 12416 | { |
8387904d AM |
12417 | if (fdh->elf.root.type == bfd_link_hash_defined |
12418 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
12419 | { | |
12420 | sym_sec = fdh->elf.root.u.def.section; | |
12421 | sym_value = fdh->elf.root.u.def.value; | |
12422 | if (sym_sec->output_section != NULL) | |
12423 | ok_dest = TRUE; | |
12424 | } | |
99877b66 AM |
12425 | else |
12426 | fdh = NULL; | |
8387904d | 12427 | } |
7fe2b9a6 AM |
12428 | } |
12429 | else | |
12430 | { | |
12431 | bfd_set_error (bfd_error_bad_value); | |
12432 | goto error_ret_free_internal; | |
721956f4 AM |
12433 | } |
12434 | ||
8843416a | 12435 | destination = 0; |
6911b7dc | 12436 | local_off = 0; |
8843416a AM |
12437 | if (ok_dest) |
12438 | { | |
12439 | sym_value += irela->r_addend; | |
12440 | destination = (sym_value | |
12441 | + sym_sec->output_offset | |
12442 | + sym_sec->output_section->vma); | |
6911b7dc AM |
12443 | local_off = PPC64_LOCAL_ENTRY_OFFSET (hash |
12444 | ? hash->elf.other | |
12445 | : sym->st_other); | |
8843416a AM |
12446 | } |
12447 | ||
8387904d | 12448 | code_sec = sym_sec; |
e054468f | 12449 | code_value = sym_value; |
74f0fb50 AM |
12450 | opd = get_opd_info (sym_sec); |
12451 | if (opd != NULL) | |
8387904d AM |
12452 | { |
12453 | bfd_vma dest; | |
12454 | ||
74f0fb50 | 12455 | if (hash == NULL && opd->adjust != NULL) |
8387904d | 12456 | { |
51aecdc5 | 12457 | long adjust = opd->adjust[OPD_NDX (sym_value)]; |
8387904d AM |
12458 | if (adjust == -1) |
12459 | continue; | |
e054468f | 12460 | code_value += adjust; |
8387904d AM |
12461 | sym_value += adjust; |
12462 | } | |
12463 | dest = opd_entry_value (sym_sec, sym_value, | |
aef36ac1 | 12464 | &code_sec, &code_value, FALSE); |
8387904d AM |
12465 | if (dest != (bfd_vma) -1) |
12466 | { | |
12467 | destination = dest; | |
12468 | if (fdh != NULL) | |
12469 | { | |
12470 | /* Fixup old ABI sym to point at code | |
12471 | entry. */ | |
99877b66 | 12472 | hash->elf.root.type = bfd_link_hash_defweak; |
8387904d | 12473 | hash->elf.root.u.def.section = code_sec; |
e054468f | 12474 | hash->elf.root.u.def.value = code_value; |
8387904d AM |
12475 | } |
12476 | } | |
12477 | } | |
12478 | ||
721956f4 | 12479 | /* Determine what (if any) linker stub is needed. */ |
e054468f | 12480 | plt_ent = NULL; |
721956f4 | 12481 | stub_type = ppc_type_of_stub (section, irela, &hash, |
6911b7dc AM |
12482 | &plt_ent, destination, |
12483 | local_off); | |
ad8e1ba5 AM |
12484 | |
12485 | if (stub_type != ppc_stub_plt_call) | |
12486 | { | |
12487 | /* Check whether we need a TOC adjusting stub. | |
12488 | Since the linker pastes together pieces from | |
12489 | different object files when creating the | |
12490 | _init and _fini functions, it may be that a | |
12491 | call to what looks like a local sym is in | |
12492 | fact a call needing a TOC adjustment. */ | |
8387904d AM |
12493 | if (code_sec != NULL |
12494 | && code_sec->output_section != NULL | |
6f20ed8a AM |
12495 | && (htab->sec_info[code_sec->id].toc_off |
12496 | != htab->sec_info[section->id].toc_off) | |
4c52953f AM |
12497 | && (code_sec->has_toc_reloc |
12498 | || code_sec->makes_toc_func_call)) | |
ad8e1ba5 AM |
12499 | stub_type = ppc_stub_long_branch_r2off; |
12500 | } | |
12501 | ||
721956f4 AM |
12502 | if (stub_type == ppc_stub_none) |
12503 | continue; | |
12504 | ||
411e1bfb AM |
12505 | /* __tls_get_addr calls might be eliminated. */ |
12506 | if (stub_type != ppc_stub_plt_call | |
12507 | && hash != NULL | |
8387904d AM |
12508 | && (hash == htab->tls_get_addr |
12509 | || hash == htab->tls_get_addr_fd) | |
411e1bfb AM |
12510 | && section->has_tls_reloc |
12511 | && irela != internal_relocs) | |
12512 | { | |
12513 | /* Get tls info. */ | |
f961d9dd | 12514 | unsigned char *tls_mask; |
411e1bfb | 12515 | |
3a71aa26 | 12516 | if (!get_tls_mask (&tls_mask, NULL, NULL, &local_syms, |
411e1bfb AM |
12517 | irela - 1, input_bfd)) |
12518 | goto error_ret_free_internal; | |
e7b938ca | 12519 | if (*tls_mask != 0) |
411e1bfb AM |
12520 | continue; |
12521 | } | |
12522 | ||
3b421ab3 AM |
12523 | if (stub_type == ppc_stub_plt_call |
12524 | && irela + 1 < irelaend | |
12525 | && irela[1].r_offset == irela->r_offset + 4 | |
794e51c0 AM |
12526 | && ELF64_R_TYPE (irela[1].r_info) == R_PPC64_TOCSAVE) |
12527 | { | |
12528 | if (!tocsave_find (htab, INSERT, | |
12529 | &local_syms, irela + 1, input_bfd)) | |
12530 | goto error_ret_free_internal; | |
12531 | } | |
12532 | else if (stub_type == ppc_stub_plt_call) | |
12533 | stub_type = ppc_stub_plt_call_r2save; | |
3b421ab3 | 12534 | |
721956f4 | 12535 | /* Support for grouping stub sections. */ |
6f20ed8a | 12536 | id_sec = htab->sec_info[section->id].u.group->link_sec; |
721956f4 AM |
12537 | |
12538 | /* Get the name of this stub. */ | |
12539 | stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela); | |
12540 | if (!stub_name) | |
12541 | goto error_ret_free_internal; | |
12542 | ||
12543 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, | |
b34976b6 | 12544 | stub_name, FALSE, FALSE); |
721956f4 AM |
12545 | if (stub_entry != NULL) |
12546 | { | |
12547 | /* The proper stub has already been created. */ | |
12548 | free (stub_name); | |
794e51c0 AM |
12549 | if (stub_type == ppc_stub_plt_call_r2save) |
12550 | stub_entry->stub_type = stub_type; | |
721956f4 AM |
12551 | continue; |
12552 | } | |
12553 | ||
25f53a85 | 12554 | stub_entry = ppc_add_stub (stub_name, section, info); |
721956f4 AM |
12555 | if (stub_entry == NULL) |
12556 | { | |
12557 | free (stub_name); | |
6cdc0ccc AM |
12558 | error_ret_free_internal: |
12559 | if (elf_section_data (section)->relocs == NULL) | |
12560 | free (internal_relocs); | |
12561 | error_ret_free_local: | |
12562 | if (local_syms != NULL | |
12563 | && (symtab_hdr->contents | |
12564 | != (unsigned char *) local_syms)) | |
12565 | free (local_syms); | |
b34976b6 | 12566 | return FALSE; |
721956f4 AM |
12567 | } |
12568 | ||
ad8e1ba5 | 12569 | stub_entry->stub_type = stub_type; |
794e51c0 AM |
12570 | if (stub_type != ppc_stub_plt_call |
12571 | && stub_type != ppc_stub_plt_call_r2save) | |
e054468f AM |
12572 | { |
12573 | stub_entry->target_value = code_value; | |
12574 | stub_entry->target_section = code_sec; | |
12575 | } | |
12576 | else | |
12577 | { | |
12578 | stub_entry->target_value = sym_value; | |
12579 | stub_entry->target_section = sym_sec; | |
12580 | } | |
721956f4 | 12581 | stub_entry->h = hash; |
e054468f | 12582 | stub_entry->plt_ent = plt_ent; |
6911b7dc | 12583 | stub_entry->other = hash ? hash->elf.other : sym->st_other; |
ee75fd95 AM |
12584 | |
12585 | if (stub_entry->h != NULL) | |
12586 | htab->stub_globals += 1; | |
721956f4 AM |
12587 | } |
12588 | ||
12589 | /* We're done with the internal relocs, free them. */ | |
6cdc0ccc | 12590 | if (elf_section_data (section)->relocs != internal_relocs) |
1e2f5b6e | 12591 | free (internal_relocs); |
721956f4 | 12592 | } |
6cdc0ccc AM |
12593 | |
12594 | if (local_syms != NULL | |
12595 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
12596 | { | |
12597 | if (!info->keep_memory) | |
12598 | free (local_syms); | |
12599 | else | |
12600 | symtab_hdr->contents = (unsigned char *) local_syms; | |
12601 | } | |
721956f4 AM |
12602 | } |
12603 | ||
5c3dead3 | 12604 | /* We may have added some stubs. Find out the new size of the |
721956f4 | 12605 | stub sections. */ |
e7d1c40c | 12606 | for (stub_sec = htab->params->stub_bfd->sections; |
721956f4 AM |
12607 | stub_sec != NULL; |
12608 | stub_sec = stub_sec->next) | |
e717da7e | 12609 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) |
ee75fd95 | 12610 | { |
ea3d7d1c AM |
12611 | if (htab->stub_iteration <= STUB_SHRINK_ITER |
12612 | || stub_sec->rawsize < stub_sec->size) | |
12613 | /* Past STUB_SHRINK_ITER, rawsize is the max size seen. */ | |
12614 | stub_sec->rawsize = stub_sec->size; | |
ee75fd95 AM |
12615 | stub_sec->size = 0; |
12616 | stub_sec->reloc_count = 0; | |
84f5d08e | 12617 | stub_sec->flags &= ~SEC_RELOC; |
ee75fd95 | 12618 | } |
eea6121a AM |
12619 | |
12620 | htab->brlt->size = 0; | |
84f5d08e AM |
12621 | htab->brlt->reloc_count = 0; |
12622 | htab->brlt->flags &= ~SEC_RELOC; | |
ee75fd95 | 12623 | if (htab->relbrlt != NULL) |
eea6121a | 12624 | htab->relbrlt->size = 0; |
721956f4 | 12625 | |
63bc6f6c | 12626 | bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, info); |
721956f4 | 12627 | |
a4b6fadd AM |
12628 | for (group = htab->group; group != NULL; group = group->next) |
12629 | if (group->needs_save_res) | |
12630 | group->stub_sec->size += htab->sfpr->size; | |
12631 | ||
176a0d42 AM |
12632 | if (info->emitrelocations |
12633 | && htab->glink != NULL && htab->glink->size != 0) | |
12634 | { | |
12635 | htab->glink->reloc_count = 1; | |
12636 | htab->glink->flags |= SEC_RELOC; | |
12637 | } | |
12638 | ||
58d180e8 AM |
12639 | if (htab->glink_eh_frame != NULL |
12640 | && !bfd_is_abs_section (htab->glink_eh_frame->output_section) | |
9a2a56cc | 12641 | && htab->glink_eh_frame->output_section->size != 0) |
58d180e8 | 12642 | { |
4bbe044a | 12643 | size_t size = 0, align; |
58d180e8 | 12644 | |
e7d1c40c | 12645 | for (stub_sec = htab->params->stub_bfd->sections; |
58d180e8 AM |
12646 | stub_sec != NULL; |
12647 | stub_sec = stub_sec->next) | |
12648 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) | |
da44f4e5 | 12649 | size += 24; |
58d180e8 AM |
12650 | if (htab->glink != NULL && htab->glink->size != 0) |
12651 | size += 24; | |
12652 | if (size != 0) | |
12653 | size += sizeof (glink_eh_frame_cie); | |
4bbe044a AM |
12654 | align = 1; |
12655 | align <<= htab->glink_eh_frame->output_section->alignment_power; | |
12656 | align -= 1; | |
12657 | size = (size + align) & ~align; | |
58d180e8 AM |
12658 | htab->glink_eh_frame->rawsize = htab->glink_eh_frame->size; |
12659 | htab->glink_eh_frame->size = size; | |
12660 | } | |
12661 | ||
e7d1c40c AM |
12662 | if (htab->params->plt_stub_align != 0) |
12663 | for (stub_sec = htab->params->stub_bfd->sections; | |
794e51c0 AM |
12664 | stub_sec != NULL; |
12665 | stub_sec = stub_sec->next) | |
12666 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) | |
e7d1c40c AM |
12667 | stub_sec->size = ((stub_sec->size |
12668 | + (1 << htab->params->plt_stub_align) - 1) | |
29f628db | 12669 | & -(1 << htab->params->plt_stub_align)); |
794e51c0 | 12670 | |
e7d1c40c | 12671 | for (stub_sec = htab->params->stub_bfd->sections; |
5c3dead3 AM |
12672 | stub_sec != NULL; |
12673 | stub_sec = stub_sec->next) | |
12674 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0 | |
c9301e31 AM |
12675 | && stub_sec->rawsize != stub_sec->size |
12676 | && (htab->stub_iteration <= STUB_SHRINK_ITER | |
12677 | || stub_sec->rawsize < stub_sec->size)) | |
5c3dead3 AM |
12678 | break; |
12679 | ||
58d180e8 AM |
12680 | if (stub_sec == NULL |
12681 | && (htab->glink_eh_frame == NULL | |
12682 | || htab->glink_eh_frame->rawsize == htab->glink_eh_frame->size)) | |
5c3dead3 AM |
12683 | break; |
12684 | ||
721956f4 | 12685 | /* Ask the linker to do its stuff. */ |
e7d1c40c | 12686 | (*htab->params->layout_sections_again) (); |
721956f4 AM |
12687 | } |
12688 | ||
da44f4e5 AM |
12689 | if (htab->glink_eh_frame != NULL |
12690 | && htab->glink_eh_frame->size != 0) | |
12691 | { | |
12692 | bfd_vma val; | |
12693 | bfd_byte *p, *last_fde; | |
12694 | size_t last_fde_len, size, align, pad; | |
12695 | asection *stub_sec; | |
12696 | ||
12697 | p = bfd_zalloc (htab->glink_eh_frame->owner, htab->glink_eh_frame->size); | |
12698 | if (p == NULL) | |
12699 | return FALSE; | |
12700 | htab->glink_eh_frame->contents = p; | |
12701 | last_fde = p; | |
12702 | ||
12703 | memcpy (p, glink_eh_frame_cie, sizeof (glink_eh_frame_cie)); | |
12704 | /* CIE length (rewrite in case little-endian). */ | |
12705 | last_fde_len = sizeof (glink_eh_frame_cie) - 4; | |
12706 | bfd_put_32 (htab->elf.dynobj, last_fde_len, p); | |
12707 | p += sizeof (glink_eh_frame_cie); | |
12708 | ||
12709 | for (stub_sec = htab->params->stub_bfd->sections; | |
12710 | stub_sec != NULL; | |
12711 | stub_sec = stub_sec->next) | |
12712 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) | |
12713 | { | |
12714 | last_fde = p; | |
12715 | last_fde_len = 20; | |
12716 | /* FDE length. */ | |
12717 | bfd_put_32 (htab->elf.dynobj, 20, p); | |
12718 | p += 4; | |
12719 | /* CIE pointer. */ | |
12720 | val = p - htab->glink_eh_frame->contents; | |
12721 | bfd_put_32 (htab->elf.dynobj, val, p); | |
12722 | p += 4; | |
12723 | /* Offset to stub section, written later. */ | |
12724 | p += 4; | |
12725 | /* stub section size. */ | |
12726 | bfd_put_32 (htab->elf.dynobj, stub_sec->size, p); | |
12727 | p += 4; | |
12728 | /* Augmentation. */ | |
12729 | p += 1; | |
12730 | /* Pad. */ | |
12731 | p += 7; | |
12732 | } | |
12733 | if (htab->glink != NULL && htab->glink->size != 0) | |
12734 | { | |
12735 | last_fde = p; | |
12736 | last_fde_len = 20; | |
12737 | /* FDE length. */ | |
12738 | bfd_put_32 (htab->elf.dynobj, 20, p); | |
12739 | p += 4; | |
12740 | /* CIE pointer. */ | |
12741 | val = p - htab->glink_eh_frame->contents; | |
12742 | bfd_put_32 (htab->elf.dynobj, val, p); | |
12743 | p += 4; | |
12744 | /* Offset to .glink, written later. */ | |
12745 | p += 4; | |
12746 | /* .glink size. */ | |
12747 | bfd_put_32 (htab->elf.dynobj, htab->glink->size - 8, p); | |
12748 | p += 4; | |
12749 | /* Augmentation. */ | |
12750 | p += 1; | |
12751 | ||
12752 | *p++ = DW_CFA_advance_loc + 1; | |
12753 | *p++ = DW_CFA_register; | |
12754 | *p++ = 65; | |
9f08fa5c | 12755 | *p++ = htab->opd_abi ? 12 : 0; |
da44f4e5 AM |
12756 | *p++ = DW_CFA_advance_loc + 4; |
12757 | *p++ = DW_CFA_restore_extended; | |
12758 | *p++ = 65; | |
12759 | } | |
12760 | /* Subsume any padding into the last FDE if user .eh_frame | |
12761 | sections are aligned more than glink_eh_frame. Otherwise any | |
12762 | zero padding will be seen as a terminator. */ | |
12763 | size = p - htab->glink_eh_frame->contents; | |
12764 | align = 1; | |
12765 | align <<= htab->glink_eh_frame->output_section->alignment_power; | |
12766 | align -= 1; | |
12767 | pad = ((size + align) & ~align) - size; | |
12768 | htab->glink_eh_frame->size = size + pad; | |
12769 | bfd_put_32 (htab->elf.dynobj, last_fde_len + pad, last_fde); | |
12770 | } | |
12771 | ||
d969d15f AM |
12772 | maybe_strip_output (info, htab->brlt); |
12773 | if (htab->glink_eh_frame != NULL) | |
12774 | maybe_strip_output (info, htab->glink_eh_frame); | |
721956f4 | 12775 | |
b34976b6 | 12776 | return TRUE; |
721956f4 AM |
12777 | } |
12778 | ||
12779 | /* Called after we have determined section placement. If sections | |
805fc799 | 12780 | move, we'll be called again. Provide a value for TOCstart. */ |
721956f4 | 12781 | |
805fc799 | 12782 | bfd_vma |
1c865ab2 | 12783 | ppc64_elf_set_toc (struct bfd_link_info *info, bfd *obfd) |
721956f4 | 12784 | { |
805fc799 | 12785 | asection *s; |
a27e685f | 12786 | bfd_vma TOCstart, adjust; |
721956f4 | 12787 | |
43417696 AM |
12788 | if (info != NULL) |
12789 | { | |
12790 | struct elf_link_hash_entry *h; | |
12791 | struct elf_link_hash_table *htab = elf_hash_table (info); | |
12792 | ||
12793 | if (is_elf_hash_table (htab) | |
12794 | && htab->hgot != NULL) | |
12795 | h = htab->hgot; | |
12796 | else | |
12797 | { | |
12798 | h = elf_link_hash_lookup (htab, ".TOC.", FALSE, FALSE, TRUE); | |
12799 | if (is_elf_hash_table (htab)) | |
12800 | htab->hgot = h; | |
12801 | } | |
12802 | if (h != NULL | |
12803 | && h->root.type == bfd_link_hash_defined | |
12804 | && !h->root.linker_def | |
12805 | && (!is_elf_hash_table (htab) | |
12806 | || h->def_regular)) | |
12807 | { | |
12808 | TOCstart = (h->root.u.def.value - TOC_BASE_OFF | |
12809 | + h->root.u.def.section->output_offset | |
12810 | + h->root.u.def.section->output_section->vma); | |
12811 | _bfd_set_gp_value (obfd, TOCstart); | |
12812 | return TOCstart; | |
12813 | } | |
12814 | } | |
12815 | ||
805fc799 AM |
12816 | /* The TOC consists of sections .got, .toc, .tocbss, .plt in that |
12817 | order. The TOC starts where the first of these sections starts. */ | |
12818 | s = bfd_get_section_by_name (obfd, ".got"); | |
e054468f | 12819 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
805fc799 | 12820 | s = bfd_get_section_by_name (obfd, ".toc"); |
e054468f | 12821 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
805fc799 | 12822 | s = bfd_get_section_by_name (obfd, ".tocbss"); |
e054468f | 12823 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
805fc799 | 12824 | s = bfd_get_section_by_name (obfd, ".plt"); |
e054468f | 12825 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
805fc799 AM |
12826 | { |
12827 | /* This may happen for | |
12828 | o references to TOC base (SYM@toc / TOC[tc0]) without a | |
12829 | .toc directive | |
12830 | o bad linker script | |
12831 | o --gc-sections and empty TOC sections | |
12832 | ||
12833 | FIXME: Warn user? */ | |
12834 | ||
12835 | /* Look for a likely section. We probably won't even be | |
12836 | using TOCstart. */ | |
12837 | for (s = obfd->sections; s != NULL; s = s->next) | |
e054468f AM |
12838 | if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY |
12839 | | SEC_EXCLUDE)) | |
805fc799 AM |
12840 | == (SEC_ALLOC | SEC_SMALL_DATA)) |
12841 | break; | |
721956f4 | 12842 | if (s == NULL) |
805fc799 | 12843 | for (s = obfd->sections; s != NULL; s = s->next) |
e054468f | 12844 | if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_EXCLUDE)) |
805fc799 AM |
12845 | == (SEC_ALLOC | SEC_SMALL_DATA)) |
12846 | break; | |
721956f4 | 12847 | if (s == NULL) |
805fc799 | 12848 | for (s = obfd->sections; s != NULL; s = s->next) |
e054468f AM |
12849 | if ((s->flags & (SEC_ALLOC | SEC_READONLY | SEC_EXCLUDE)) |
12850 | == SEC_ALLOC) | |
805fc799 | 12851 | break; |
721956f4 | 12852 | if (s == NULL) |
805fc799 | 12853 | for (s = obfd->sections; s != NULL; s = s->next) |
e054468f | 12854 | if ((s->flags & (SEC_ALLOC | SEC_EXCLUDE)) == SEC_ALLOC) |
805fc799 AM |
12855 | break; |
12856 | } | |
721956f4 | 12857 | |
805fc799 AM |
12858 | TOCstart = 0; |
12859 | if (s != NULL) | |
12860 | TOCstart = s->output_section->vma + s->output_offset; | |
721956f4 | 12861 | |
a27e685f AM |
12862 | /* Force alignment. */ |
12863 | adjust = TOCstart & (TOC_BASE_ALIGN - 1); | |
12864 | TOCstart -= adjust; | |
1c865ab2 AM |
12865 | _bfd_set_gp_value (obfd, TOCstart); |
12866 | ||
810d4e75 | 12867 | if (info != NULL && s != NULL) |
1c865ab2 AM |
12868 | { |
12869 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
12870 | ||
810d4e75 AM |
12871 | if (htab != NULL) |
12872 | { | |
12873 | if (htab->elf.hgot != NULL) | |
12874 | { | |
a27e685f | 12875 | htab->elf.hgot->root.u.def.value = TOC_BASE_OFF - adjust; |
810d4e75 AM |
12876 | htab->elf.hgot->root.u.def.section = s; |
12877 | } | |
12878 | } | |
12879 | else | |
1c865ab2 | 12880 | { |
810d4e75 AM |
12881 | struct bfd_link_hash_entry *bh = NULL; |
12882 | _bfd_generic_link_add_one_symbol (info, obfd, ".TOC.", BSF_GLOBAL, | |
a27e685f AM |
12883 | s, TOC_BASE_OFF - adjust, |
12884 | NULL, FALSE, FALSE, &bh); | |
1c865ab2 AM |
12885 | } |
12886 | } | |
805fc799 | 12887 | return TOCstart; |
721956f4 AM |
12888 | } |
12889 | ||
a345bc8d AM |
12890 | /* Called via elf_link_hash_traverse from ppc64_elf_build_stubs to |
12891 | write out any global entry stubs. */ | |
12892 | ||
12893 | static bfd_boolean | |
12894 | build_global_entry_stubs (struct elf_link_hash_entry *h, void *inf) | |
12895 | { | |
12896 | struct bfd_link_info *info; | |
12897 | struct ppc_link_hash_table *htab; | |
12898 | struct plt_entry *pent; | |
12899 | asection *s; | |
12900 | ||
12901 | if (h->root.type == bfd_link_hash_indirect) | |
12902 | return TRUE; | |
12903 | ||
12904 | if (!h->pointer_equality_needed) | |
12905 | return TRUE; | |
12906 | ||
12907 | if (h->def_regular) | |
12908 | return TRUE; | |
12909 | ||
12910 | info = inf; | |
12911 | htab = ppc_hash_table (info); | |
12912 | if (htab == NULL) | |
12913 | return FALSE; | |
12914 | ||
12915 | s = htab->glink; | |
12916 | for (pent = h->plt.plist; pent != NULL; pent = pent->next) | |
12917 | if (pent->plt.offset != (bfd_vma) -1 | |
12918 | && pent->addend == 0) | |
12919 | { | |
12920 | bfd_byte *p; | |
12921 | asection *plt; | |
12922 | bfd_vma off; | |
12923 | ||
a345bc8d | 12924 | p = s->contents + h->root.u.def.value; |
33e44f2e | 12925 | plt = htab->elf.splt; |
a345bc8d AM |
12926 | if (!htab->elf.dynamic_sections_created |
12927 | || h->dynindx == -1) | |
33e44f2e | 12928 | plt = htab->elf.iplt; |
a345bc8d AM |
12929 | off = pent->plt.offset + plt->output_offset + plt->output_section->vma; |
12930 | off -= h->root.u.def.value + s->output_offset + s->output_section->vma; | |
12931 | ||
12932 | if (off + 0x80008000 > 0xffffffff || (off & 3) != 0) | |
12933 | { | |
12934 | info->callbacks->einfo | |
12935 | (_("%P: linkage table error against `%T'\n"), | |
12936 | h->root.root.string); | |
12937 | bfd_set_error (bfd_error_bad_value); | |
12938 | htab->stub_error = TRUE; | |
12939 | } | |
12940 | ||
7341d5e2 AM |
12941 | htab->stub_count[ppc_stub_global_entry - 1] += 1; |
12942 | if (htab->params->emit_stub_syms) | |
12943 | { | |
12944 | size_t len = strlen (h->root.root.string); | |
12945 | char *name = bfd_malloc (sizeof "12345678.global_entry." + len); | |
12946 | ||
12947 | if (name == NULL) | |
12948 | return FALSE; | |
12949 | ||
12950 | sprintf (name, "%08x.global_entry.%s", s->id, h->root.root.string); | |
12951 | h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE); | |
12952 | if (h == NULL) | |
12953 | return FALSE; | |
12954 | if (h->root.type == bfd_link_hash_new) | |
12955 | { | |
12956 | h->root.type = bfd_link_hash_defined; | |
12957 | h->root.u.def.section = s; | |
12958 | h->root.u.def.value = p - s->contents; | |
12959 | h->ref_regular = 1; | |
12960 | h->def_regular = 1; | |
12961 | h->ref_regular_nonweak = 1; | |
12962 | h->forced_local = 1; | |
12963 | h->non_elf = 0; | |
2ec55de3 | 12964 | h->root.linker_def = 1; |
7341d5e2 AM |
12965 | } |
12966 | } | |
12967 | ||
a345bc8d AM |
12968 | if (PPC_HA (off) != 0) |
12969 | { | |
12970 | bfd_put_32 (s->owner, ADDIS_R12_R12 | PPC_HA (off), p); | |
12971 | p += 4; | |
12972 | } | |
12973 | bfd_put_32 (s->owner, LD_R12_0R12 | PPC_LO (off), p); | |
12974 | p += 4; | |
12975 | bfd_put_32 (s->owner, MTCTR_R12, p); | |
12976 | p += 4; | |
12977 | bfd_put_32 (s->owner, BCTR, p); | |
12978 | break; | |
12979 | } | |
12980 | return TRUE; | |
12981 | } | |
12982 | ||
721956f4 AM |
12983 | /* Build all the stubs associated with the current output file. |
12984 | The stubs are kept in a hash table attached to the main linker | |
12985 | hash table. This function is called via gldelf64ppc_finish. */ | |
12986 | ||
b34976b6 | 12987 | bfd_boolean |
e7d1c40c | 12988 | ppc64_elf_build_stubs (struct bfd_link_info *info, |
4ce794b7 | 12989 | char **stats) |
5d1634d7 AM |
12990 | { |
12991 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
a4b6fadd | 12992 | struct map_stub *group; |
721956f4 | 12993 | asection *stub_sec; |
5d1634d7 | 12994 | bfd_byte *p; |
e717da7e | 12995 | int stub_sec_count = 0; |
5d1634d7 | 12996 | |
4dfe6ac6 NC |
12997 | if (htab == NULL) |
12998 | return FALSE; | |
12999 | ||
eea6121a | 13000 | /* Allocate memory to hold the linker stubs. */ |
e7d1c40c | 13001 | for (stub_sec = htab->params->stub_bfd->sections; |
721956f4 AM |
13002 | stub_sec != NULL; |
13003 | stub_sec = stub_sec->next) | |
eea6121a AM |
13004 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0 |
13005 | && stub_sec->size != 0) | |
e717da7e | 13006 | { |
e7d1c40c | 13007 | stub_sec->contents = bfd_zalloc (htab->params->stub_bfd, stub_sec->size); |
eea6121a AM |
13008 | if (stub_sec->contents == NULL) |
13009 | return FALSE; | |
eea6121a | 13010 | stub_sec->size = 0; |
e717da7e | 13011 | } |
5d1634d7 | 13012 | |
23eb7e01 | 13013 | if (htab->glink != NULL && htab->glink->size != 0) |
5d1634d7 | 13014 | { |
9f951329 | 13015 | unsigned int indx; |
ad8e1ba5 | 13016 | bfd_vma plt0; |
9f951329 | 13017 | |
721956f4 | 13018 | /* Build the .glink plt call stub. */ |
e7d1c40c | 13019 | if (htab->params->emit_stub_syms) |
97b639ba AM |
13020 | { |
13021 | struct elf_link_hash_entry *h; | |
468392fb AM |
13022 | h = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve", |
13023 | TRUE, FALSE, FALSE); | |
97b639ba AM |
13024 | if (h == NULL) |
13025 | return FALSE; | |
13026 | if (h->root.type == bfd_link_hash_new) | |
13027 | { | |
13028 | h->root.type = bfd_link_hash_defined; | |
13029 | h->root.u.def.section = htab->glink; | |
ee4bf8d2 | 13030 | h->root.u.def.value = 8; |
f5385ebf AM |
13031 | h->ref_regular = 1; |
13032 | h->def_regular = 1; | |
13033 | h->ref_regular_nonweak = 1; | |
13034 | h->forced_local = 1; | |
13035 | h->non_elf = 0; | |
2ec55de3 | 13036 | h->root.linker_def = 1; |
97b639ba AM |
13037 | } |
13038 | } | |
33e44f2e AM |
13039 | plt0 = (htab->elf.splt->output_section->vma |
13040 | + htab->elf.splt->output_offset | |
13041 | - 16); | |
176a0d42 AM |
13042 | if (info->emitrelocations) |
13043 | { | |
13044 | Elf_Internal_Rela *r = get_relocs (htab->glink, 1); | |
13045 | if (r == NULL) | |
13046 | return FALSE; | |
13047 | r->r_offset = (htab->glink->output_offset | |
13048 | + htab->glink->output_section->vma); | |
13049 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL64); | |
13050 | r->r_addend = plt0; | |
13051 | } | |
4ce794b7 | 13052 | p = htab->glink->contents; |
176a0d42 | 13053 | plt0 -= htab->glink->output_section->vma + htab->glink->output_offset; |
ee4bf8d2 AM |
13054 | bfd_put_64 (htab->glink->owner, plt0, p); |
13055 | p += 8; | |
b9e5796b AM |
13056 | if (htab->opd_abi) |
13057 | { | |
13058 | bfd_put_32 (htab->glink->owner, MFLR_R12, p); | |
13059 | p += 4; | |
13060 | bfd_put_32 (htab->glink->owner, BCL_20_31, p); | |
13061 | p += 4; | |
13062 | bfd_put_32 (htab->glink->owner, MFLR_R11, p); | |
13063 | p += 4; | |
13064 | bfd_put_32 (htab->glink->owner, LD_R2_0R11 | (-16 & 0xfffc), p); | |
13065 | p += 4; | |
13066 | bfd_put_32 (htab->glink->owner, MTLR_R12, p); | |
13067 | p += 4; | |
13068 | bfd_put_32 (htab->glink->owner, ADD_R11_R2_R11, p); | |
13069 | p += 4; | |
13070 | bfd_put_32 (htab->glink->owner, LD_R12_0R11, p); | |
13071 | p += 4; | |
13072 | bfd_put_32 (htab->glink->owner, LD_R2_0R11 | 8, p); | |
13073 | p += 4; | |
13074 | bfd_put_32 (htab->glink->owner, MTCTR_R12, p); | |
13075 | p += 4; | |
13076 | bfd_put_32 (htab->glink->owner, LD_R11_0R11 | 16, p); | |
13077 | p += 4; | |
13078 | } | |
13079 | else | |
13080 | { | |
13081 | bfd_put_32 (htab->glink->owner, MFLR_R0, p); | |
13082 | p += 4; | |
13083 | bfd_put_32 (htab->glink->owner, BCL_20_31, p); | |
13084 | p += 4; | |
13085 | bfd_put_32 (htab->glink->owner, MFLR_R11, p); | |
13086 | p += 4; | |
13087 | bfd_put_32 (htab->glink->owner, LD_R2_0R11 | (-16 & 0xfffc), p); | |
13088 | p += 4; | |
13089 | bfd_put_32 (htab->glink->owner, MTLR_R0, p); | |
13090 | p += 4; | |
13091 | bfd_put_32 (htab->glink->owner, SUB_R12_R12_R11, p); | |
13092 | p += 4; | |
13093 | bfd_put_32 (htab->glink->owner, ADD_R11_R2_R11, p); | |
13094 | p += 4; | |
13095 | bfd_put_32 (htab->glink->owner, ADDI_R0_R12 | (-48 & 0xffff), p); | |
13096 | p += 4; | |
13097 | bfd_put_32 (htab->glink->owner, LD_R12_0R11, p); | |
13098 | p += 4; | |
13099 | bfd_put_32 (htab->glink->owner, SRDI_R0_R0_2, p); | |
13100 | p += 4; | |
13101 | bfd_put_32 (htab->glink->owner, MTCTR_R12, p); | |
13102 | p += 4; | |
13103 | bfd_put_32 (htab->glink->owner, LD_R11_0R11 | 8, p); | |
13104 | p += 4; | |
13105 | } | |
4ce794b7 | 13106 | bfd_put_32 (htab->glink->owner, BCTR, p); |
ad8e1ba5 | 13107 | p += 4; |
ee4bf8d2 AM |
13108 | while (p - htab->glink->contents < GLINK_CALL_STUB_SIZE) |
13109 | { | |
13110 | bfd_put_32 (htab->glink->owner, NOP, p); | |
13111 | p += 4; | |
13112 | } | |
ad8e1ba5 | 13113 | |
9f951329 AM |
13114 | /* Build the .glink lazy link call stubs. */ |
13115 | indx = 0; | |
a345bc8d | 13116 | while (p < htab->glink->contents + htab->glink->rawsize) |
9f951329 | 13117 | { |
b9e5796b | 13118 | if (htab->opd_abi) |
9f951329 | 13119 | { |
b9e5796b AM |
13120 | if (indx < 0x8000) |
13121 | { | |
13122 | bfd_put_32 (htab->glink->owner, LI_R0_0 | indx, p); | |
13123 | p += 4; | |
13124 | } | |
13125 | else | |
13126 | { | |
13127 | bfd_put_32 (htab->glink->owner, LIS_R0_0 | PPC_HI (indx), p); | |
13128 | p += 4; | |
13129 | bfd_put_32 (htab->glink->owner, ORI_R0_R0_0 | PPC_LO (indx), | |
13130 | p); | |
13131 | p += 4; | |
13132 | } | |
9f951329 | 13133 | } |
4ce794b7 | 13134 | bfd_put_32 (htab->glink->owner, |
ee4bf8d2 | 13135 | B_DOT | ((htab->glink->contents - p + 8) & 0x3fffffc), p); |
a16d5acb | 13136 | indx++; |
9f951329 AM |
13137 | p += 4; |
13138 | } | |
a345bc8d AM |
13139 | |
13140 | /* Build .glink global entry stubs. */ | |
13141 | if (htab->glink->size > htab->glink->rawsize) | |
afe397ea | 13142 | elf_link_hash_traverse (&htab->elf, build_global_entry_stubs, info); |
5d1634d7 | 13143 | } |
5d1634d7 | 13144 | |
7341d5e2 | 13145 | if (htab->brlt != NULL && htab->brlt->size != 0) |
721956f4 | 13146 | { |
4ce794b7 | 13147 | htab->brlt->contents = bfd_zalloc (htab->brlt->owner, |
eea6121a | 13148 | htab->brlt->size); |
4ce794b7 | 13149 | if (htab->brlt->contents == NULL) |
b34976b6 | 13150 | return FALSE; |
721956f4 | 13151 | } |
ee75fd95 | 13152 | if (htab->relbrlt != NULL && htab->relbrlt->size != 0) |
63bc6f6c AM |
13153 | { |
13154 | htab->relbrlt->contents = bfd_zalloc (htab->relbrlt->owner, | |
eea6121a | 13155 | htab->relbrlt->size); |
63bc6f6c AM |
13156 | if (htab->relbrlt->contents == NULL) |
13157 | return FALSE; | |
13158 | } | |
5d1634d7 | 13159 | |
721956f4 AM |
13160 | /* Build the stubs as directed by the stub hash table. */ |
13161 | bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info); | |
5d1634d7 | 13162 | |
a4b6fadd AM |
13163 | for (group = htab->group; group != NULL; group = group->next) |
13164 | if (group->needs_save_res) | |
13165 | { | |
13166 | stub_sec = group->stub_sec; | |
13167 | memcpy (stub_sec->contents + stub_sec->size, htab->sfpr->contents, | |
13168 | htab->sfpr->size); | |
13169 | if (htab->params->emit_stub_syms) | |
13170 | { | |
13171 | unsigned int i; | |
13172 | ||
13173 | for (i = 0; i < ARRAY_SIZE (save_res_funcs); i++) | |
13174 | if (!sfpr_define (info, &save_res_funcs[i], stub_sec)) | |
13175 | return FALSE; | |
13176 | } | |
13177 | stub_sec->size += htab->sfpr->size; | |
13178 | } | |
13179 | ||
aa8a7074 AM |
13180 | if (htab->relbrlt != NULL) |
13181 | htab->relbrlt->reloc_count = 0; | |
13182 | ||
e7d1c40c AM |
13183 | if (htab->params->plt_stub_align != 0) |
13184 | for (stub_sec = htab->params->stub_bfd->sections; | |
794e51c0 AM |
13185 | stub_sec != NULL; |
13186 | stub_sec = stub_sec->next) | |
13187 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) | |
e7d1c40c AM |
13188 | stub_sec->size = ((stub_sec->size |
13189 | + (1 << htab->params->plt_stub_align) - 1) | |
29f628db | 13190 | & -(1 << htab->params->plt_stub_align)); |
794e51c0 | 13191 | |
e7d1c40c | 13192 | for (stub_sec = htab->params->stub_bfd->sections; |
721956f4 AM |
13193 | stub_sec != NULL; |
13194 | stub_sec = stub_sec->next) | |
e717da7e AM |
13195 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) |
13196 | { | |
13197 | stub_sec_count += 1; | |
c9301e31 AM |
13198 | if (stub_sec->rawsize != stub_sec->size |
13199 | && (htab->stub_iteration <= STUB_SHRINK_ITER | |
13200 | || stub_sec->rawsize < stub_sec->size)) | |
e717da7e AM |
13201 | break; |
13202 | } | |
5d1634d7 | 13203 | |
da44f4e5 AM |
13204 | /* Note that the glink_eh_frame check here is not only testing that |
13205 | the generated size matched the calculated size but also that | |
13206 | bfd_elf_discard_info didn't make any changes to the section. */ | |
721956f4 | 13207 | if (stub_sec != NULL |
58d180e8 AM |
13208 | || (htab->glink_eh_frame != NULL |
13209 | && htab->glink_eh_frame->rawsize != htab->glink_eh_frame->size)) | |
5d1634d7 | 13210 | { |
b34976b6 | 13211 | htab->stub_error = TRUE; |
8de848d8 | 13212 | info->callbacks->einfo (_("%P: stubs don't match calculated size\n")); |
5d1634d7 | 13213 | } |
721956f4 | 13214 | |
d2a300cf AM |
13215 | if (htab->stub_error) |
13216 | return FALSE; | |
13217 | ||
13218 | if (stats != NULL) | |
13219 | { | |
13220 | *stats = bfd_malloc (500); | |
13221 | if (*stats == NULL) | |
13222 | return FALSE; | |
13223 | ||
ee75fd95 | 13224 | sprintf (*stats, _("linker stubs in %u group%s\n" |
d2a300cf AM |
13225 | " branch %lu\n" |
13226 | " toc adjust %lu\n" | |
13227 | " long branch %lu\n" | |
13228 | " long toc adj %lu\n" | |
794e51c0 | 13229 | " plt call %lu\n" |
7341d5e2 AM |
13230 | " plt call toc %lu\n" |
13231 | " global entry %lu"), | |
e717da7e | 13232 | stub_sec_count, |
ee75fd95 | 13233 | stub_sec_count == 1 ? "" : "s", |
4ce794b7 AM |
13234 | htab->stub_count[ppc_stub_long_branch - 1], |
13235 | htab->stub_count[ppc_stub_long_branch_r2off - 1], | |
13236 | htab->stub_count[ppc_stub_plt_branch - 1], | |
13237 | htab->stub_count[ppc_stub_plt_branch_r2off - 1], | |
794e51c0 | 13238 | htab->stub_count[ppc_stub_plt_call - 1], |
7341d5e2 AM |
13239 | htab->stub_count[ppc_stub_plt_call_r2save - 1], |
13240 | htab->stub_count[ppc_stub_global_entry - 1]); | |
d2a300cf AM |
13241 | } |
13242 | return TRUE; | |
5bd4f169 AM |
13243 | } |
13244 | ||
99877b66 AM |
13245 | /* This function undoes the changes made by add_symbol_adjust. */ |
13246 | ||
13247 | static bfd_boolean | |
13248 | undo_symbol_twiddle (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED) | |
13249 | { | |
13250 | struct ppc_link_hash_entry *eh; | |
13251 | ||
13252 | if (h->root.type == bfd_link_hash_indirect) | |
13253 | return TRUE; | |
13254 | ||
99877b66 AM |
13255 | eh = (struct ppc_link_hash_entry *) h; |
13256 | if (eh->elf.root.type != bfd_link_hash_undefweak || !eh->was_undefined) | |
13257 | return TRUE; | |
13258 | ||
13259 | eh->elf.root.type = bfd_link_hash_undefined; | |
13260 | return TRUE; | |
13261 | } | |
13262 | ||
13263 | void | |
13264 | ppc64_elf_restore_symbols (struct bfd_link_info *info) | |
13265 | { | |
13266 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
13267 | |
13268 | if (htab != NULL) | |
13269 | elf_link_hash_traverse (&htab->elf, undo_symbol_twiddle, info); | |
99877b66 AM |
13270 | } |
13271 | ||
60124e18 AM |
13272 | /* What to do when ld finds relocations against symbols defined in |
13273 | discarded sections. */ | |
13274 | ||
13275 | static unsigned int | |
13276 | ppc64_elf_action_discarded (asection *sec) | |
13277 | { | |
13278 | if (strcmp (".opd", sec->name) == 0) | |
13279 | return 0; | |
13280 | ||
13281 | if (strcmp (".toc", sec->name) == 0) | |
13282 | return 0; | |
13283 | ||
bce50a28 JJ |
13284 | if (strcmp (".toc1", sec->name) == 0) |
13285 | return 0; | |
13286 | ||
60124e18 AM |
13287 | return _bfd_elf_default_action_discarded (sec); |
13288 | } | |
13289 | ||
5bd4f169 AM |
13290 | /* The RELOCATE_SECTION function is called by the ELF backend linker |
13291 | to handle the relocations for a section. | |
13292 | ||
13293 | The relocs are always passed as Rela structures; if the section | |
13294 | actually uses Rel structures, the r_addend field will always be | |
13295 | zero. | |
13296 | ||
13297 | This function is responsible for adjust the section contents as | |
13298 | necessary, and (if using Rela relocs and generating a | |
1049f94e | 13299 | relocatable output file) adjusting the reloc addend as |
5bd4f169 AM |
13300 | necessary. |
13301 | ||
13302 | This function does not have to worry about setting the reloc | |
13303 | address or the reloc symbol index. | |
13304 | ||
13305 | LOCAL_SYMS is a pointer to the swapped in local symbols. | |
13306 | ||
13307 | LOCAL_SECTIONS is an array giving the section in the input file | |
13308 | corresponding to the st_shndx field of each local symbol. | |
13309 | ||
13310 | The global hash table entry for the global symbols can be found | |
13311 | via elf_sym_hashes (input_bfd). | |
13312 | ||
1049f94e | 13313 | When generating relocatable output, this function must handle |
5bd4f169 AM |
13314 | STB_LOCAL/STT_SECTION symbols specially. The output symbol is |
13315 | going to be the section symbol corresponding to the output | |
13316 | section, which means that the addend must be adjusted | |
13317 | accordingly. */ | |
13318 | ||
b34976b6 | 13319 | static bfd_boolean |
4ce794b7 AM |
13320 | ppc64_elf_relocate_section (bfd *output_bfd, |
13321 | struct bfd_link_info *info, | |
13322 | bfd *input_bfd, | |
13323 | asection *input_section, | |
13324 | bfd_byte *contents, | |
13325 | Elf_Internal_Rela *relocs, | |
13326 | Elf_Internal_Sym *local_syms, | |
13327 | asection **local_sections) | |
5bd4f169 | 13328 | { |
65f38f15 | 13329 | struct ppc_link_hash_table *htab; |
5bd4f169 AM |
13330 | Elf_Internal_Shdr *symtab_hdr; |
13331 | struct elf_link_hash_entry **sym_hashes; | |
5bd4f169 | 13332 | Elf_Internal_Rela *rel; |
c316a17c | 13333 | Elf_Internal_Rela *wrel; |
5bd4f169 | 13334 | Elf_Internal_Rela *relend; |
411e1bfb AM |
13335 | Elf_Internal_Rela outrel; |
13336 | bfd_byte *loc; | |
411e1bfb | 13337 | struct got_entry **local_got_ents; |
5bd4f169 | 13338 | bfd_vma TOCstart; |
b34976b6 AM |
13339 | bfd_boolean ret = TRUE; |
13340 | bfd_boolean is_opd; | |
794e51c0 AM |
13341 | /* Assume 'at' branch hints. */ |
13342 | bfd_boolean is_isa_v2 = TRUE; | |
95f0d0d2 | 13343 | bfd_vma d_offset = (bfd_big_endian (input_bfd) ? 2 : 0); |
5bd4f169 | 13344 | |
65f38f15 | 13345 | /* Initialize howto table if needed. */ |
5bd4f169 | 13346 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) |
5bd4f169 AM |
13347 | ppc_howto_init (); |
13348 | ||
65f38f15 | 13349 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
13350 | if (htab == NULL) |
13351 | return FALSE; | |
ee75fd95 AM |
13352 | |
13353 | /* Don't relocate stub sections. */ | |
e7d1c40c | 13354 | if (input_section->owner == htab->params->stub_bfd) |
ee75fd95 AM |
13355 | return TRUE; |
13356 | ||
0c8d6e5c | 13357 | BFD_ASSERT (is_ppc64_elf (input_bfd)); |
0ffa91dd | 13358 | |
411e1bfb | 13359 | local_got_ents = elf_local_got_ents (input_bfd); |
5bd4f169 | 13360 | TOCstart = elf_gp (output_bfd); |
0ffa91dd | 13361 | symtab_hdr = &elf_symtab_hdr (input_bfd); |
5bd4f169 | 13362 | sym_hashes = elf_sym_hashes (input_bfd); |
7c8fe5c4 | 13363 | is_opd = ppc64_elf_section_data (input_section)->sec_type == sec_opd; |
65f38f15 | 13364 | |
c316a17c | 13365 | rel = wrel = relocs; |
5bd4f169 | 13366 | relend = relocs + input_section->reloc_count; |
c316a17c | 13367 | for (; rel < relend; wrel++, rel++) |
5bd4f169 | 13368 | { |
04c9666a | 13369 | enum elf_ppc64_reloc_type r_type; |
31c76678 | 13370 | bfd_vma addend; |
5bd4f169 AM |
13371 | bfd_reloc_status_type r; |
13372 | Elf_Internal_Sym *sym; | |
13373 | asection *sec; | |
039b3fef AM |
13374 | struct elf_link_hash_entry *h_elf; |
13375 | struct ppc_link_hash_entry *h; | |
13376 | struct ppc_link_hash_entry *fdh; | |
5bd4f169 | 13377 | const char *sym_name; |
0d4792f7 | 13378 | unsigned long r_symndx, toc_symndx; |
3a71aa26 | 13379 | bfd_vma toc_addend; |
f961d9dd AM |
13380 | unsigned char tls_mask, tls_gd, tls_type; |
13381 | unsigned char sym_type; | |
5bd4f169 | 13382 | bfd_vma relocation; |
b34976b6 AM |
13383 | bfd_boolean unresolved_reloc; |
13384 | bfd_boolean warned; | |
bc30df16 | 13385 | enum { DEST_NORMAL, DEST_OPD, DEST_STUB } reloc_dest; |
67f0cbdb | 13386 | unsigned int insn; |
e11840f9 | 13387 | unsigned int mask; |
721956f4 AM |
13388 | struct ppc_stub_hash_entry *stub_entry; |
13389 | bfd_vma max_br_offset; | |
13390 | bfd_vma from; | |
c316a17c | 13391 | Elf_Internal_Rela orig_rel; |
b80eed39 AM |
13392 | reloc_howto_type *howto; |
13393 | struct reloc_howto_struct alt_howto; | |
5bd4f169 | 13394 | |
c316a17c AM |
13395 | again: |
13396 | orig_rel = *rel; | |
13397 | ||
4ce794b7 | 13398 | r_type = ELF64_R_TYPE (rel->r_info); |
5bd4f169 | 13399 | r_symndx = ELF64_R_SYM (rel->r_info); |
ee87f2da AM |
13400 | |
13401 | /* For old style R_PPC64_TOC relocs with a zero symbol, use the | |
13402 | symbol of the previous ADDR64 reloc. The symbol gives us the | |
13403 | proper TOC base to use. */ | |
13404 | if (rel->r_info == ELF64_R_INFO (0, R_PPC64_TOC) | |
c316a17c AM |
13405 | && wrel != relocs |
13406 | && ELF64_R_TYPE (wrel[-1].r_info) == R_PPC64_ADDR64 | |
ee87f2da | 13407 | && is_opd) |
c316a17c | 13408 | r_symndx = ELF64_R_SYM (wrel[-1].r_info); |
ee87f2da | 13409 | |
4ce794b7 AM |
13410 | sym = NULL; |
13411 | sec = NULL; | |
039b3fef | 13412 | h_elf = NULL; |
4ce794b7 | 13413 | sym_name = NULL; |
b34976b6 AM |
13414 | unresolved_reloc = FALSE; |
13415 | warned = FALSE; | |
65f38f15 | 13416 | |
0b13192e | 13417 | if (r_symndx < symtab_hdr->sh_info) |
5bd4f169 AM |
13418 | { |
13419 | /* It's a local symbol. */ | |
74f0fb50 | 13420 | struct _opd_sec_data *opd; |
4025353c | 13421 | |
5bd4f169 AM |
13422 | sym = local_syms + r_symndx; |
13423 | sec = local_sections[r_symndx]; | |
26c61ae5 | 13424 | sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec); |
0d4792f7 | 13425 | sym_type = ELF64_ST_TYPE (sym->st_info); |
8517fae7 | 13426 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); |
74f0fb50 AM |
13427 | opd = get_opd_info (sec); |
13428 | if (opd != NULL && opd->adjust != NULL) | |
1e2f5b6e | 13429 | { |
51aecdc5 AM |
13430 | long adjust = opd->adjust[OPD_NDX (sym->st_value |
13431 | + rel->r_addend)]; | |
4025353c AM |
13432 | if (adjust == -1) |
13433 | relocation = 0; | |
13434 | else | |
4cc603a5 AM |
13435 | { |
13436 | /* If this is a relocation against the opd section sym | |
13437 | and we have edited .opd, adjust the reloc addend so | |
13438 | that ld -r and ld --emit-relocs output is correct. | |
13439 | If it is a reloc against some other .opd symbol, | |
13440 | then the symbol value will be adjusted later. */ | |
13441 | if (ELF_ST_TYPE (sym->st_info) == STT_SECTION) | |
13442 | rel->r_addend += adjust; | |
13443 | else | |
13444 | relocation += adjust; | |
13445 | } | |
1e2f5b6e | 13446 | } |
5bd4f169 AM |
13447 | } |
13448 | else | |
13449 | { | |
62d887d4 L |
13450 | bfd_boolean ignored; |
13451 | ||
b2a8e766 AM |
13452 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
13453 | r_symndx, symtab_hdr, sym_hashes, | |
039b3fef | 13454 | h_elf, sec, relocation, |
62d887d4 | 13455 | unresolved_reloc, warned, ignored); |
039b3fef AM |
13456 | sym_name = h_elf->root.root.string; |
13457 | sym_type = h_elf->type; | |
b69fdb4e AM |
13458 | if (sec != NULL |
13459 | && sec->owner == output_bfd | |
13460 | && strcmp (sec->name, ".opd") == 0) | |
13461 | { | |
13462 | /* This is a symbol defined in a linker script. All | |
13463 | such are defined in output sections, even those | |
13464 | defined by simple assignment from a symbol defined in | |
13465 | an input section. Transfer the symbol to an | |
13466 | appropriate input .opd section, so that a branch to | |
13467 | this symbol will be mapped to the location specified | |
13468 | by the opd entry. */ | |
13469 | struct bfd_link_order *lo; | |
13470 | for (lo = sec->map_head.link_order; lo != NULL; lo = lo->next) | |
13471 | if (lo->type == bfd_indirect_link_order) | |
13472 | { | |
13473 | asection *isec = lo->u.indirect.section; | |
13474 | if (h_elf->root.u.def.value >= isec->output_offset | |
13475 | && h_elf->root.u.def.value < (isec->output_offset | |
13476 | + isec->size)) | |
13477 | { | |
13478 | h_elf->root.u.def.value -= isec->output_offset; | |
13479 | h_elf->root.u.def.section = isec; | |
13480 | sec = isec; | |
13481 | break; | |
13482 | } | |
13483 | } | |
13484 | } | |
5bd4f169 | 13485 | } |
039b3fef | 13486 | h = (struct ppc_link_hash_entry *) h_elf; |
5bd4f169 | 13487 | |
dbaa2011 | 13488 | if (sec != NULL && discarded_section (sec)) |
c316a17c AM |
13489 | { |
13490 | _bfd_clear_contents (ppc64_elf_howto_table[r_type], | |
13491 | input_bfd, input_section, | |
13492 | contents + rel->r_offset); | |
13493 | wrel->r_offset = rel->r_offset; | |
13494 | wrel->r_info = 0; | |
13495 | wrel->r_addend = 0; | |
13496 | ||
13497 | /* For ld -r, remove relocations in debug sections against | |
13498 | sections defined in discarded sections. Not done for | |
13499 | non-debug to preserve relocs in .eh_frame which the | |
13500 | eh_frame editing code expects to be present. */ | |
13501 | if (bfd_link_relocatable (info) | |
13502 | && (input_section->flags & SEC_DEBUGGING)) | |
13503 | wrel--; | |
13504 | ||
13505 | continue; | |
13506 | } | |
ab96bf03 | 13507 | |
0e1862bb | 13508 | if (bfd_link_relocatable (info)) |
c316a17c | 13509 | goto copy_reloc; |
ab96bf03 | 13510 | |
f40da81b AM |
13511 | if (h != NULL && &h->elf == htab->elf.hgot) |
13512 | { | |
6f20ed8a | 13513 | relocation = TOCstart + htab->sec_info[input_section->id].toc_off; |
f40da81b AM |
13514 | sec = bfd_abs_section_ptr; |
13515 | unresolved_reloc = FALSE; | |
13516 | } | |
13517 | ||
951fd09b AM |
13518 | /* TLS optimizations. Replace instruction sequences and relocs |
13519 | based on information we collected in tls_optimize. We edit | |
13520 | RELOCS so that --emit-relocs will output something sensible | |
13521 | for the final instruction stream. */ | |
13522 | tls_mask = 0; | |
13523 | tls_gd = 0; | |
0d4792f7 | 13524 | toc_symndx = 0; |
727fc41e AM |
13525 | if (h != NULL) |
13526 | tls_mask = h->tls_mask; | |
13527 | else if (local_got_ents != NULL) | |
411e1bfb | 13528 | { |
e054468f AM |
13529 | struct plt_entry **local_plt = (struct plt_entry **) |
13530 | (local_got_ents + symtab_hdr->sh_info); | |
f961d9dd | 13531 | unsigned char *lgot_masks = (unsigned char *) |
e054468f | 13532 | (local_plt + symtab_hdr->sh_info); |
727fc41e AM |
13533 | tls_mask = lgot_masks[r_symndx]; |
13534 | } | |
13535 | if (tls_mask == 0 | |
13536 | && (r_type == R_PPC64_TLS | |
13537 | || r_type == R_PPC64_TLSGD | |
13538 | || r_type == R_PPC64_TLSLD)) | |
13539 | { | |
13540 | /* Check for toc tls entries. */ | |
f961d9dd | 13541 | unsigned char *toc_tls; |
0d4792f7 | 13542 | |
727fc41e AM |
13543 | if (!get_tls_mask (&toc_tls, &toc_symndx, &toc_addend, |
13544 | &local_syms, rel, input_bfd)) | |
13545 | return FALSE; | |
0d4792f7 | 13546 | |
727fc41e AM |
13547 | if (toc_tls) |
13548 | tls_mask = *toc_tls; | |
0d4792f7 AM |
13549 | } |
13550 | ||
13551 | /* Check that tls relocs are used with tls syms, and non-tls | |
13552 | relocs are used with non-tls syms. */ | |
cf35638d | 13553 | if (r_symndx != STN_UNDEF |
0d4792f7 AM |
13554 | && r_type != R_PPC64_NONE |
13555 | && (h == NULL | |
039b3fef AM |
13556 | || h->elf.root.type == bfd_link_hash_defined |
13557 | || h->elf.root.type == bfd_link_hash_defweak) | |
1d483afe AM |
13558 | && (IS_PPC64_TLS_RELOC (r_type) |
13559 | != (sym_type == STT_TLS | |
13560 | || (sym_type == STT_SECTION | |
13561 | && (sec->flags & SEC_THREAD_LOCAL) != 0)))) | |
0d4792f7 | 13562 | { |
727fc41e AM |
13563 | if (tls_mask != 0 |
13564 | && (r_type == R_PPC64_TLS | |
13565 | || r_type == R_PPC64_TLSGD | |
13566 | || r_type == R_PPC64_TLSLD)) | |
0d4792f7 AM |
13567 | /* R_PPC64_TLS is OK against a symbol in the TOC. */ |
13568 | ; | |
13569 | else | |
25f53a85 | 13570 | info->callbacks->einfo |
1d483afe | 13571 | (!IS_PPC64_TLS_RELOC (r_type) |
695344c0 | 13572 | /* xgettext:c-format */ |
bc30df16 | 13573 | ? _("%P: %H: %s used with TLS symbol `%T'\n") |
695344c0 | 13574 | /* xgettext:c-format */ |
bc30df16 | 13575 | : _("%P: %H: %s used with non-TLS symbol `%T'\n"), |
25f53a85 | 13576 | input_bfd, input_section, rel->r_offset, |
0d4792f7 AM |
13577 | ppc64_elf_howto_table[r_type]->name, |
13578 | sym_name); | |
411e1bfb AM |
13579 | } |
13580 | ||
13581 | /* Ensure reloc mapping code below stays sane. */ | |
13582 | if (R_PPC64_TOC16_LO_DS != R_PPC64_TOC16_DS + 1 | |
13583 | || R_PPC64_TOC16_LO != R_PPC64_TOC16 + 1 | |
13584 | || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TLSGD16 & 3) | |
13585 | || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TLSGD16_LO & 3) | |
13586 | || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TLSGD16_HI & 3) | |
13587 | || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TLSGD16_HA & 3) | |
13588 | || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TPREL16_DS & 3) | |
13589 | || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TPREL16_LO_DS & 3) | |
13590 | || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TPREL16_HI & 3) | |
13591 | || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TPREL16_HA & 3)) | |
13592 | abort (); | |
0d4792f7 | 13593 | |
411e1bfb AM |
13594 | switch (r_type) |
13595 | { | |
13596 | default: | |
411e1bfb AM |
13597 | break; |
13598 | ||
ba761f19 | 13599 | case R_PPC64_LO_DS_OPT: |
95f0d0d2 | 13600 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset - d_offset); |
ba761f19 AM |
13601 | if ((insn & (0x3f << 26)) != 58u << 26) |
13602 | abort (); | |
13603 | insn += (14u << 26) - (58u << 26); | |
95f0d0d2 | 13604 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset - d_offset); |
ba761f19 AM |
13605 | r_type = R_PPC64_TOC16_LO; |
13606 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
13607 | break; | |
13608 | ||
411e1bfb AM |
13609 | case R_PPC64_TOC16: |
13610 | case R_PPC64_TOC16_LO: | |
13611 | case R_PPC64_TOC16_DS: | |
13612 | case R_PPC64_TOC16_LO_DS: | |
411e1bfb AM |
13613 | { |
13614 | /* Check for toc tls entries. */ | |
f961d9dd | 13615 | unsigned char *toc_tls; |
951fd09b | 13616 | int retval; |
411e1bfb | 13617 | |
3a71aa26 AM |
13618 | retval = get_tls_mask (&toc_tls, &toc_symndx, &toc_addend, |
13619 | &local_syms, rel, input_bfd); | |
951fd09b | 13620 | if (retval == 0) |
411e1bfb AM |
13621 | return FALSE; |
13622 | ||
13623 | if (toc_tls) | |
13624 | { | |
951fd09b | 13625 | tls_mask = *toc_tls; |
411e1bfb AM |
13626 | if (r_type == R_PPC64_TOC16_DS |
13627 | || r_type == R_PPC64_TOC16_LO_DS) | |
81407a69 AM |
13628 | { |
13629 | if (tls_mask != 0 | |
13630 | && (tls_mask & (TLS_DTPREL | TLS_TPREL)) == 0) | |
13631 | goto toctprel; | |
13632 | } | |
411e1bfb | 13633 | else |
951fd09b AM |
13634 | { |
13635 | /* If we found a GD reloc pair, then we might be | |
13636 | doing a GD->IE transition. */ | |
13637 | if (retval == 2) | |
13638 | { | |
13639 | tls_gd = TLS_TPRELGD; | |
13640 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
102890f0 | 13641 | goto tls_ldgd_opt; |
951fd09b AM |
13642 | } |
13643 | else if (retval == 3) | |
13644 | { | |
13645 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) | |
102890f0 | 13646 | goto tls_ldgd_opt; |
951fd09b AM |
13647 | } |
13648 | } | |
411e1bfb AM |
13649 | } |
13650 | } | |
13651 | break; | |
13652 | ||
9d6ded02 AM |
13653 | case R_PPC64_GOT_TPREL16_HI: |
13654 | case R_PPC64_GOT_TPREL16_HA: | |
13655 | if (tls_mask != 0 | |
13656 | && (tls_mask & TLS_TPREL) == 0) | |
13657 | { | |
13658 | rel->r_offset -= d_offset; | |
95f0d0d2 | 13659 | bfd_put_32 (input_bfd, NOP, contents + rel->r_offset); |
9d6ded02 AM |
13660 | r_type = R_PPC64_NONE; |
13661 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
13662 | } | |
13663 | break; | |
13664 | ||
411e1bfb AM |
13665 | case R_PPC64_GOT_TPREL16_DS: |
13666 | case R_PPC64_GOT_TPREL16_LO_DS: | |
951fd09b AM |
13667 | if (tls_mask != 0 |
13668 | && (tls_mask & TLS_TPREL) == 0) | |
411e1bfb | 13669 | { |
81407a69 | 13670 | toctprel: |
95f0d0d2 | 13671 | insn = bfd_get_32 (input_bfd, |
c316a17c | 13672 | contents + rel->r_offset - d_offset); |
411e1bfb AM |
13673 | insn &= 31 << 21; |
13674 | insn |= 0x3c0d0000; /* addis 0,13,0 */ | |
95f0d0d2 | 13675 | bfd_put_32 (input_bfd, insn, |
c316a17c | 13676 | contents + rel->r_offset - d_offset); |
411e1bfb | 13677 | r_type = R_PPC64_TPREL16_HA; |
0d4792f7 AM |
13678 | if (toc_symndx != 0) |
13679 | { | |
13680 | rel->r_info = ELF64_R_INFO (toc_symndx, r_type); | |
3a71aa26 | 13681 | rel->r_addend = toc_addend; |
0d4792f7 AM |
13682 | /* We changed the symbol. Start over in order to |
13683 | get h, sym, sec etc. right. */ | |
c316a17c | 13684 | goto again; |
0d4792f7 AM |
13685 | } |
13686 | else | |
13687 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
411e1bfb AM |
13688 | } |
13689 | break; | |
13690 | ||
13691 | case R_PPC64_TLS: | |
951fd09b AM |
13692 | if (tls_mask != 0 |
13693 | && (tls_mask & TLS_TPREL) == 0) | |
411e1bfb | 13694 | { |
95f0d0d2 | 13695 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); |
2d0f3896 AM |
13696 | insn = _bfd_elf_ppc_at_tls_transform (insn, 13); |
13697 | if (insn == 0) | |
411e1bfb | 13698 | abort (); |
95f0d0d2 | 13699 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
411e1bfb | 13700 | /* Was PPC64_TLS which sits on insn boundary, now |
4fe5ca5b GM |
13701 | PPC64_TPREL16_LO which is at low-order half-word. */ |
13702 | rel->r_offset += d_offset; | |
0d4792f7 AM |
13703 | r_type = R_PPC64_TPREL16_LO; |
13704 | if (toc_symndx != 0) | |
13705 | { | |
13706 | rel->r_info = ELF64_R_INFO (toc_symndx, r_type); | |
3a71aa26 | 13707 | rel->r_addend = toc_addend; |
0d4792f7 AM |
13708 | /* We changed the symbol. Start over in order to |
13709 | get h, sym, sec etc. right. */ | |
c316a17c | 13710 | goto again; |
0d4792f7 AM |
13711 | } |
13712 | else | |
13713 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
411e1bfb AM |
13714 | } |
13715 | break; | |
13716 | ||
411e1bfb AM |
13717 | case R_PPC64_GOT_TLSGD16_HI: |
13718 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b AM |
13719 | tls_gd = TLS_TPRELGD; |
13720 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
13721 | goto tls_gdld_hi; | |
13722 | break; | |
13723 | ||
411e1bfb AM |
13724 | case R_PPC64_GOT_TLSLD16_HI: |
13725 | case R_PPC64_GOT_TLSLD16_HA: | |
951fd09b | 13726 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) |
411e1bfb | 13727 | { |
951fd09b AM |
13728 | tls_gdld_hi: |
13729 | if ((tls_mask & tls_gd) != 0) | |
13730 | r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3) | |
13731 | + R_PPC64_GOT_TPREL16_DS); | |
13732 | else | |
411e1bfb | 13733 | { |
4fe5ca5b | 13734 | rel->r_offset -= d_offset; |
95f0d0d2 | 13735 | bfd_put_32 (input_bfd, NOP, contents + rel->r_offset); |
951fd09b | 13736 | r_type = R_PPC64_NONE; |
411e1bfb | 13737 | } |
951fd09b | 13738 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); |
411e1bfb AM |
13739 | } |
13740 | break; | |
13741 | ||
951fd09b AM |
13742 | case R_PPC64_GOT_TLSGD16: |
13743 | case R_PPC64_GOT_TLSGD16_LO: | |
13744 | tls_gd = TLS_TPRELGD; | |
13745 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
102890f0 | 13746 | goto tls_ldgd_opt; |
951fd09b | 13747 | break; |
411e1bfb | 13748 | |
951fd09b AM |
13749 | case R_PPC64_GOT_TLSLD16: |
13750 | case R_PPC64_GOT_TLSLD16_LO: | |
13751 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) | |
13752 | { | |
3a71aa26 | 13753 | unsigned int insn1, insn2, insn3; |
102890f0 AM |
13754 | bfd_vma offset; |
13755 | ||
13756 | tls_ldgd_opt: | |
727fc41e AM |
13757 | offset = (bfd_vma) -1; |
13758 | /* If not using the newer R_PPC64_TLSGD/LD to mark | |
13759 | __tls_get_addr calls, we must trust that the call | |
13760 | stays with its arg setup insns, ie. that the next | |
13761 | reloc is the __tls_get_addr call associated with | |
13762 | the current reloc. Edit both insns. */ | |
13763 | if (input_section->has_tls_get_addr_call | |
13764 | && rel + 1 < relend | |
13765 | && branch_reloc_hash_match (input_bfd, rel + 1, | |
13766 | htab->tls_get_addr, | |
13767 | htab->tls_get_addr_fd)) | |
13768 | offset = rel[1].r_offset; | |
b86ac8e3 AM |
13769 | /* We read the low GOT_TLS (or TOC16) insn because we |
13770 | need to keep the destination reg. It may be | |
13771 | something other than the usual r3, and moved to r3 | |
13772 | before the call by intervening code. */ | |
95f0d0d2 | 13773 | insn1 = bfd_get_32 (input_bfd, |
b86ac8e3 | 13774 | contents + rel->r_offset - d_offset); |
102890f0 | 13775 | if ((tls_mask & tls_gd) != 0) |
411e1bfb | 13776 | { |
102890f0 | 13777 | /* IE */ |
b86ac8e3 | 13778 | insn1 &= (0x1f << 21) | (0x1f << 16); |
102890f0 AM |
13779 | insn1 |= 58 << 26; /* ld */ |
13780 | insn2 = 0x7c636a14; /* add 3,3,13 */ | |
727fc41e | 13781 | if (offset != (bfd_vma) -1) |
f58d5a2d | 13782 | rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE); |
102890f0 AM |
13783 | if ((tls_mask & TLS_EXPLICIT) == 0) |
13784 | r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3) | |
13785 | + R_PPC64_GOT_TPREL16_DS); | |
411e1bfb | 13786 | else |
102890f0 AM |
13787 | r_type += R_PPC64_TOC16_DS - R_PPC64_TOC16; |
13788 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
13789 | } | |
13790 | else | |
13791 | { | |
13792 | /* LE */ | |
b86ac8e3 AM |
13793 | insn1 &= 0x1f << 21; |
13794 | insn1 |= 0x3c0d0000; /* addis r,13,0 */ | |
102890f0 AM |
13795 | insn2 = 0x38630000; /* addi 3,3,0 */ |
13796 | if (tls_gd == 0) | |
951fd09b | 13797 | { |
102890f0 | 13798 | /* Was an LD reloc. */ |
1d483afe AM |
13799 | if (toc_symndx) |
13800 | sec = local_sections[toc_symndx]; | |
13801 | for (r_symndx = 0; | |
13802 | r_symndx < symtab_hdr->sh_info; | |
13803 | r_symndx++) | |
13804 | if (local_sections[r_symndx] == sec) | |
13805 | break; | |
13806 | if (r_symndx >= symtab_hdr->sh_info) | |
cf35638d | 13807 | r_symndx = STN_UNDEF; |
102890f0 | 13808 | rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; |
cf35638d | 13809 | if (r_symndx != STN_UNDEF) |
1d483afe AM |
13810 | rel->r_addend -= (local_syms[r_symndx].st_value |
13811 | + sec->output_offset | |
13812 | + sec->output_section->vma); | |
951fd09b | 13813 | } |
102890f0 | 13814 | else if (toc_symndx != 0) |
3a71aa26 AM |
13815 | { |
13816 | r_symndx = toc_symndx; | |
13817 | rel->r_addend = toc_addend; | |
13818 | } | |
102890f0 AM |
13819 | r_type = R_PPC64_TPREL16_HA; |
13820 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
727fc41e AM |
13821 | if (offset != (bfd_vma) -1) |
13822 | { | |
13823 | rel[1].r_info = ELF64_R_INFO (r_symndx, | |
13824 | R_PPC64_TPREL16_LO); | |
13825 | rel[1].r_offset = offset + d_offset; | |
13826 | rel[1].r_addend = rel->r_addend; | |
13827 | } | |
102890f0 | 13828 | } |
95f0d0d2 | 13829 | bfd_put_32 (input_bfd, insn1, |
3a71aa26 | 13830 | contents + rel->r_offset - d_offset); |
727fc41e AM |
13831 | if (offset != (bfd_vma) -1) |
13832 | { | |
95f0d0d2 | 13833 | insn3 = bfd_get_32 (input_bfd, |
727fc41e AM |
13834 | contents + offset + 4); |
13835 | if (insn3 == NOP | |
13836 | || insn3 == CROR_151515 || insn3 == CROR_313131) | |
13837 | { | |
13838 | rel[1].r_offset += 4; | |
95f0d0d2 | 13839 | bfd_put_32 (input_bfd, insn2, contents + offset + 4); |
727fc41e AM |
13840 | insn2 = NOP; |
13841 | } | |
95f0d0d2 | 13842 | bfd_put_32 (input_bfd, insn2, contents + offset); |
727fc41e AM |
13843 | } |
13844 | if ((tls_mask & tls_gd) == 0 | |
13845 | && (tls_gd == 0 || toc_symndx != 0)) | |
13846 | { | |
13847 | /* We changed the symbol. Start over in order | |
13848 | to get h, sym, sec etc. right. */ | |
c316a17c | 13849 | goto again; |
727fc41e AM |
13850 | } |
13851 | } | |
13852 | break; | |
13853 | ||
13854 | case R_PPC64_TLSGD: | |
13855 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
13856 | { | |
13857 | unsigned int insn2, insn3; | |
13858 | bfd_vma offset = rel->r_offset; | |
13859 | ||
13860 | if ((tls_mask & TLS_TPRELGD) != 0) | |
13861 | { | |
13862 | /* IE */ | |
13863 | r_type = R_PPC64_NONE; | |
13864 | insn2 = 0x7c636a14; /* add 3,3,13 */ | |
13865 | } | |
13866 | else | |
13867 | { | |
13868 | /* LE */ | |
13869 | if (toc_symndx != 0) | |
13870 | { | |
13871 | r_symndx = toc_symndx; | |
13872 | rel->r_addend = toc_addend; | |
13873 | } | |
13874 | r_type = R_PPC64_TPREL16_LO; | |
13875 | rel->r_offset = offset + d_offset; | |
13876 | insn2 = 0x38630000; /* addi 3,3,0 */ | |
13877 | } | |
13878 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
13879 | /* Zap the reloc on the _tls_get_addr call too. */ | |
13880 | BFD_ASSERT (offset == rel[1].r_offset); | |
f58d5a2d | 13881 | rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE); |
95f0d0d2 | 13882 | insn3 = bfd_get_32 (input_bfd, |
3a71aa26 | 13883 | contents + offset + 4); |
102890f0 AM |
13884 | if (insn3 == NOP |
13885 | || insn3 == CROR_151515 || insn3 == CROR_313131) | |
13886 | { | |
727fc41e | 13887 | rel->r_offset += 4; |
95f0d0d2 | 13888 | bfd_put_32 (input_bfd, insn2, contents + offset + 4); |
3a71aa26 | 13889 | insn2 = NOP; |
102890f0 | 13890 | } |
95f0d0d2 | 13891 | bfd_put_32 (input_bfd, insn2, contents + offset); |
727fc41e | 13892 | if ((tls_mask & TLS_TPRELGD) == 0 && toc_symndx != 0) |
c316a17c | 13893 | goto again; |
411e1bfb | 13894 | } |
411e1bfb AM |
13895 | break; |
13896 | ||
727fc41e AM |
13897 | case R_PPC64_TLSLD: |
13898 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) | |
13899 | { | |
13900 | unsigned int insn2, insn3; | |
13901 | bfd_vma offset = rel->r_offset; | |
13902 | ||
13903 | if (toc_symndx) | |
13904 | sec = local_sections[toc_symndx]; | |
13905 | for (r_symndx = 0; | |
13906 | r_symndx < symtab_hdr->sh_info; | |
13907 | r_symndx++) | |
13908 | if (local_sections[r_symndx] == sec) | |
13909 | break; | |
13910 | if (r_symndx >= symtab_hdr->sh_info) | |
cf35638d | 13911 | r_symndx = STN_UNDEF; |
727fc41e | 13912 | rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; |
cf35638d | 13913 | if (r_symndx != STN_UNDEF) |
727fc41e AM |
13914 | rel->r_addend -= (local_syms[r_symndx].st_value |
13915 | + sec->output_offset | |
13916 | + sec->output_section->vma); | |
13917 | ||
13918 | r_type = R_PPC64_TPREL16_LO; | |
13919 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
13920 | rel->r_offset = offset + d_offset; | |
13921 | /* Zap the reloc on the _tls_get_addr call too. */ | |
13922 | BFD_ASSERT (offset == rel[1].r_offset); | |
f58d5a2d | 13923 | rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE); |
727fc41e | 13924 | insn2 = 0x38630000; /* addi 3,3,0 */ |
95f0d0d2 | 13925 | insn3 = bfd_get_32 (input_bfd, |
727fc41e AM |
13926 | contents + offset + 4); |
13927 | if (insn3 == NOP | |
13928 | || insn3 == CROR_151515 || insn3 == CROR_313131) | |
13929 | { | |
13930 | rel->r_offset += 4; | |
95f0d0d2 | 13931 | bfd_put_32 (input_bfd, insn2, contents + offset + 4); |
727fc41e AM |
13932 | insn2 = NOP; |
13933 | } | |
95f0d0d2 | 13934 | bfd_put_32 (input_bfd, insn2, contents + offset); |
c316a17c | 13935 | goto again; |
727fc41e AM |
13936 | } |
13937 | break; | |
13938 | ||
411e1bfb | 13939 | case R_PPC64_DTPMOD64: |
951fd09b AM |
13940 | if (rel + 1 < relend |
13941 | && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64) | |
13942 | && rel[1].r_offset == rel->r_offset + 8) | |
411e1bfb | 13943 | { |
951fd09b AM |
13944 | if ((tls_mask & TLS_GD) == 0) |
13945 | { | |
13946 | rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_NONE); | |
13947 | if ((tls_mask & TLS_TPRELGD) != 0) | |
13948 | r_type = R_PPC64_TPREL64; | |
13949 | else | |
13950 | { | |
4ce794b7 | 13951 | bfd_put_64 (output_bfd, 1, contents + rel->r_offset); |
951fd09b AM |
13952 | r_type = R_PPC64_NONE; |
13953 | } | |
13954 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
13955 | } | |
13956 | } | |
13957 | else | |
13958 | { | |
13959 | if ((tls_mask & TLS_LD) == 0) | |
411e1bfb | 13960 | { |
4ce794b7 | 13961 | bfd_put_64 (output_bfd, 1, contents + rel->r_offset); |
411e1bfb | 13962 | r_type = R_PPC64_NONE; |
951fd09b | 13963 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); |
411e1bfb | 13964 | } |
411e1bfb AM |
13965 | } |
13966 | break; | |
13967 | ||
13968 | case R_PPC64_TPREL64: | |
951fd09b | 13969 | if ((tls_mask & TLS_TPREL) == 0) |
411e1bfb AM |
13970 | { |
13971 | r_type = R_PPC64_NONE; | |
13972 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
13973 | } | |
13974 | break; | |
52a82034 | 13975 | |
006589cf AM |
13976 | case R_PPC64_ENTRY: |
13977 | relocation = TOCstart + htab->sec_info[input_section->id].toc_off; | |
13978 | if (!bfd_link_pic (info) | |
13979 | && !info->traditional_format | |
13980 | && relocation + 0x80008000 <= 0xffffffff) | |
13981 | { | |
13982 | unsigned int insn1, insn2; | |
13983 | ||
13984 | insn1 = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
13985 | insn2 = bfd_get_32 (input_bfd, contents + rel->r_offset + 4); | |
13986 | if ((insn1 & ~0xfffc) == LD_R2_0R12 | |
13987 | && insn2 == ADD_R2_R2_R12) | |
13988 | { | |
95f0d0d2 | 13989 | bfd_put_32 (input_bfd, |
006589cf AM |
13990 | LIS_R2 + PPC_HA (relocation), |
13991 | contents + rel->r_offset); | |
95f0d0d2 | 13992 | bfd_put_32 (input_bfd, |
006589cf AM |
13993 | ADDI_R2_R2 + PPC_LO (relocation), |
13994 | contents + rel->r_offset + 4); | |
13995 | } | |
13996 | } | |
13997 | else | |
13998 | { | |
13999 | relocation -= (rel->r_offset | |
14000 | + input_section->output_offset | |
14001 | + input_section->output_section->vma); | |
14002 | if (relocation + 0x80008000 <= 0xffffffff) | |
14003 | { | |
14004 | unsigned int insn1, insn2; | |
14005 | ||
14006 | insn1 = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
14007 | insn2 = bfd_get_32 (input_bfd, contents + rel->r_offset + 4); | |
14008 | if ((insn1 & ~0xfffc) == LD_R2_0R12 | |
14009 | && insn2 == ADD_R2_R2_R12) | |
14010 | { | |
95f0d0d2 | 14011 | bfd_put_32 (input_bfd, |
006589cf AM |
14012 | ADDIS_R2_R12 + PPC_HA (relocation), |
14013 | contents + rel->r_offset); | |
95f0d0d2 | 14014 | bfd_put_32 (input_bfd, |
006589cf AM |
14015 | ADDI_R2_R2 + PPC_LO (relocation), |
14016 | contents + rel->r_offset + 4); | |
14017 | } | |
14018 | } | |
14019 | } | |
14020 | break; | |
14021 | ||
52a82034 AM |
14022 | case R_PPC64_REL16_HA: |
14023 | /* If we are generating a non-PIC executable, edit | |
14024 | . 0: addis 2,12,.TOC.-0b@ha | |
14025 | . addi 2,2,.TOC.-0b@l | |
14026 | used by ELFv2 global entry points to set up r2, to | |
14027 | . lis 2,.TOC.@ha | |
14028 | . addi 2,2,.TOC.@l | |
14029 | if .TOC. is in range. */ | |
0e1862bb | 14030 | if (!bfd_link_pic (info) |
810d4e75 | 14031 | && !info->traditional_format |
006589cf | 14032 | && !htab->opd_abi |
4f038ee5 | 14033 | && rel->r_addend == d_offset |
52a82034 AM |
14034 | && h != NULL && &h->elf == htab->elf.hgot |
14035 | && rel + 1 < relend | |
14036 | && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_REL16_LO) | |
14037 | && rel[1].r_offset == rel->r_offset + 4 | |
14038 | && rel[1].r_addend == rel->r_addend + 4 | |
14039 | && relocation + 0x80008000 <= 0xffffffff) | |
14040 | { | |
14041 | unsigned int insn1, insn2; | |
14042 | bfd_vma offset = rel->r_offset - d_offset; | |
95f0d0d2 AM |
14043 | insn1 = bfd_get_32 (input_bfd, contents + offset); |
14044 | insn2 = bfd_get_32 (input_bfd, contents + offset + 4); | |
006589cf AM |
14045 | if ((insn1 & 0xffff0000) == ADDIS_R2_R12 |
14046 | && (insn2 & 0xffff0000) == ADDI_R2_R2) | |
52a82034 AM |
14047 | { |
14048 | r_type = R_PPC64_ADDR16_HA; | |
14049 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
14050 | rel->r_addend -= d_offset; | |
14051 | rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_ADDR16_LO); | |
14052 | rel[1].r_addend -= d_offset + 4; | |
95f0d0d2 | 14053 | bfd_put_32 (input_bfd, LIS_R2, contents + offset); |
52a82034 AM |
14054 | } |
14055 | } | |
14056 | break; | |
411e1bfb AM |
14057 | } |
14058 | ||
14059 | /* Handle other relocations that tweak non-addend part of insn. */ | |
86c76c7b | 14060 | insn = 0; |
b25116a9 AM |
14061 | max_br_offset = 1 << 25; |
14062 | addend = rel->r_addend; | |
bc30df16 | 14063 | reloc_dest = DEST_NORMAL; |
65f38f15 | 14064 | switch (r_type) |
5bd4f169 AM |
14065 | { |
14066 | default: | |
65f38f15 | 14067 | break; |
5bd4f169 | 14068 | |
3b421ab3 AM |
14069 | case R_PPC64_TOCSAVE: |
14070 | if (relocation + addend == (rel->r_offset | |
14071 | + input_section->output_offset | |
14072 | + input_section->output_section->vma) | |
14073 | && tocsave_find (htab, NO_INSERT, | |
14074 | &local_syms, rel, input_bfd)) | |
14075 | { | |
14076 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
14077 | if (insn == NOP | |
14078 | || insn == CROR_151515 || insn == CROR_313131) | |
a078d95a AM |
14079 | bfd_put_32 (input_bfd, |
14080 | STD_R2_0R1 + STK_TOC (htab), | |
3b421ab3 AM |
14081 | contents + rel->r_offset); |
14082 | } | |
14083 | break; | |
14084 | ||
65f38f15 AM |
14085 | /* Branch taken prediction relocations. */ |
14086 | case R_PPC64_ADDR14_BRTAKEN: | |
14087 | case R_PPC64_REL14_BRTAKEN: | |
cedb70c5 | 14088 | insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */ |
1a0670f3 | 14089 | /* Fall through. */ |
65f38f15 | 14090 | |
86c76c7b | 14091 | /* Branch not taken prediction relocations. */ |
65f38f15 AM |
14092 | case R_PPC64_ADDR14_BRNTAKEN: |
14093 | case R_PPC64_REL14_BRNTAKEN: | |
95f0d0d2 | 14094 | insn |= bfd_get_32 (input_bfd, |
411e1bfb | 14095 | contents + rel->r_offset) & ~(0x01 << 21); |
1a0670f3 | 14096 | /* Fall through. */ |
86c76c7b | 14097 | |
b25116a9 AM |
14098 | case R_PPC64_REL14: |
14099 | max_br_offset = 1 << 15; | |
1a0670f3 | 14100 | /* Fall through. */ |
5bd4f169 | 14101 | |
65f38f15 | 14102 | case R_PPC64_REL24: |
ad8e1ba5 AM |
14103 | /* Calls to functions with a different TOC, such as calls to |
14104 | shared objects, need to alter the TOC pointer. This is | |
14105 | done using a linkage stub. A REL24 branching to these | |
14106 | linkage stubs needs to be followed by a nop, as the nop | |
14107 | will be replaced with an instruction to restore the TOC | |
14108 | base pointer. */ | |
8387904d | 14109 | fdh = h; |
b31867b6 AM |
14110 | if (h != NULL |
14111 | && h->oh != NULL | |
14112 | && h->oh->is_func_descriptor) | |
14113 | fdh = ppc_follow_link (h->oh); | |
31c76678 DK |
14114 | stub_entry = ppc_get_stub_entry (input_section, sec, fdh, &orig_rel, |
14115 | htab); | |
6abec6bc | 14116 | if (stub_entry != NULL |
ad8e1ba5 | 14117 | && (stub_entry->stub_type == ppc_stub_plt_call |
794e51c0 | 14118 | || stub_entry->stub_type == ppc_stub_plt_call_r2save |
ad8e1ba5 AM |
14119 | || stub_entry->stub_type == ppc_stub_plt_branch_r2off |
14120 | || stub_entry->stub_type == ppc_stub_long_branch_r2off)) | |
41bd81ab | 14121 | { |
b25116a9 | 14122 | bfd_boolean can_plt_call = FALSE; |
721956f4 | 14123 | |
ba8ca3e7 AM |
14124 | /* All of these stubs will modify r2, so there must be a |
14125 | branch and link followed by a nop. The nop is | |
14126 | replaced by an insn to restore r2. */ | |
eea6121a | 14127 | if (rel->r_offset + 8 <= input_section->size) |
41bd81ab | 14128 | { |
ba8ca3e7 AM |
14129 | unsigned long br; |
14130 | ||
14131 | br = bfd_get_32 (input_bfd, | |
14132 | contents + rel->r_offset); | |
14133 | if ((br & 1) != 0) | |
41bd81ab | 14134 | { |
ba8ca3e7 AM |
14135 | unsigned long nop; |
14136 | ||
14137 | nop = bfd_get_32 (input_bfd, | |
14138 | contents + rel->r_offset + 4); | |
14139 | if (nop == NOP | |
14140 | || nop == CROR_151515 || nop == CROR_313131) | |
a7f2871e | 14141 | { |
ba8ca3e7 AM |
14142 | if (h != NULL |
14143 | && (h == htab->tls_get_addr_fd | |
14144 | || h == htab->tls_get_addr) | |
7c9cf415 | 14145 | && htab->params->tls_get_addr_opt) |
ba8ca3e7 AM |
14146 | { |
14147 | /* Special stub used, leave nop alone. */ | |
14148 | } | |
14149 | else | |
a078d95a AM |
14150 | bfd_put_32 (input_bfd, |
14151 | LD_R2_0R1 + STK_TOC (htab), | |
ba8ca3e7 AM |
14152 | contents + rel->r_offset + 4); |
14153 | can_plt_call = TRUE; | |
a7f2871e | 14154 | } |
41bd81ab | 14155 | } |
5bd4f169 | 14156 | } |
721956f4 | 14157 | |
ba8ca3e7 | 14158 | if (!can_plt_call && h != NULL) |
721956f4 | 14159 | { |
ba8ca3e7 AM |
14160 | const char *name = h->elf.root.root.string; |
14161 | ||
14162 | if (*name == '.') | |
14163 | ++name; | |
14164 | ||
14165 | if (strncmp (name, "__libc_start_main", 17) == 0 | |
14166 | && (name[17] == 0 || name[17] == '@')) | |
6ab189d5 | 14167 | { |
ba8ca3e7 AM |
14168 | /* Allow crt1 branch to go via a toc adjusting |
14169 | stub. Other calls that never return could do | |
14170 | the same, if we could detect such. */ | |
b25116a9 | 14171 | can_plt_call = TRUE; |
6ab189d5 | 14172 | } |
ba8ca3e7 AM |
14173 | } |
14174 | ||
14175 | if (!can_plt_call) | |
14176 | { | |
14177 | /* g++ as of 20130507 emits self-calls without a | |
14178 | following nop. This is arguably wrong since we | |
14179 | have conflicting information. On the one hand a | |
14180 | global symbol and on the other a local call | |
14181 | sequence, but don't error for this special case. | |
14182 | It isn't possible to cheaply verify we have | |
14183 | exactly such a call. Allow all calls to the same | |
14184 | section. */ | |
14185 | asection *code_sec = sec; | |
14186 | ||
14187 | if (get_opd_info (sec) != NULL) | |
ad8e1ba5 | 14188 | { |
ba8ca3e7 AM |
14189 | bfd_vma off = (relocation + addend |
14190 | - sec->output_section->vma | |
14191 | - sec->output_offset); | |
bc30df16 | 14192 | |
ba8ca3e7 | 14193 | opd_entry_value (sec, off, &code_sec, NULL, FALSE); |
ad8e1ba5 | 14194 | } |
ba8ca3e7 AM |
14195 | if (code_sec == input_section) |
14196 | can_plt_call = TRUE; | |
14197 | } | |
14198 | ||
14199 | if (!can_plt_call) | |
14200 | { | |
4805fc55 AM |
14201 | if (stub_entry->stub_type == ppc_stub_plt_call |
14202 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
14203 | info->callbacks->einfo | |
695344c0 | 14204 | /* xgettext:c-format */ |
4805fc55 AM |
14205 | (_("%P: %H: call to `%T' lacks nop, can't restore toc; " |
14206 | "recompile with -fPIC\n"), | |
14207 | input_bfd, input_section, rel->r_offset, sym_name); | |
14208 | else | |
14209 | info->callbacks->einfo | |
695344c0 | 14210 | /* xgettext:c-format */ |
4805fc55 AM |
14211 | (_("%P: %H: call to `%T' lacks nop, can't restore toc; " |
14212 | "(-mcmodel=small toc adjust stub)\n"), | |
14213 | input_bfd, input_section, rel->r_offset, sym_name); | |
ba8ca3e7 AM |
14214 | |
14215 | bfd_set_error (bfd_error_bad_value); | |
14216 | ret = FALSE; | |
721956f4 AM |
14217 | } |
14218 | ||
b25116a9 | 14219 | if (can_plt_call |
794e51c0 AM |
14220 | && (stub_entry->stub_type == ppc_stub_plt_call |
14221 | || stub_entry->stub_type == ppc_stub_plt_call_r2save)) | |
b25116a9 AM |
14222 | unresolved_reloc = FALSE; |
14223 | } | |
14224 | ||
6abec6bc AM |
14225 | if ((stub_entry == NULL |
14226 | || stub_entry->stub_type == ppc_stub_long_branch | |
14227 | || stub_entry->stub_type == ppc_stub_plt_branch) | |
8387904d AM |
14228 | && get_opd_info (sec) != NULL) |
14229 | { | |
14230 | /* The branch destination is the value of the opd entry. */ | |
4cc603a5 AM |
14231 | bfd_vma off = (relocation + addend |
14232 | - sec->output_section->vma | |
14233 | - sec->output_offset); | |
aef36ac1 | 14234 | bfd_vma dest = opd_entry_value (sec, off, NULL, NULL, FALSE); |
8387904d AM |
14235 | if (dest != (bfd_vma) -1) |
14236 | { | |
14237 | relocation = dest; | |
14238 | addend = 0; | |
bc30df16 | 14239 | reloc_dest = DEST_OPD; |
8387904d AM |
14240 | } |
14241 | } | |
14242 | ||
b25116a9 AM |
14243 | /* If the branch is out of reach we ought to have a long |
14244 | branch stub. */ | |
14245 | from = (rel->r_offset | |
14246 | + input_section->output_offset | |
14247 | + input_section->output_section->vma); | |
14248 | ||
6911b7dc AM |
14249 | relocation += PPC64_LOCAL_ENTRY_OFFSET (fdh |
14250 | ? fdh->elf.other | |
14251 | : sym->st_other); | |
14252 | ||
6abec6bc AM |
14253 | if (stub_entry != NULL |
14254 | && (stub_entry->stub_type == ppc_stub_long_branch | |
14255 | || stub_entry->stub_type == ppc_stub_plt_branch) | |
14256 | && (r_type == R_PPC64_ADDR14_BRTAKEN | |
14257 | || r_type == R_PPC64_ADDR14_BRNTAKEN | |
14258 | || (relocation + addend - from + max_br_offset | |
14259 | < 2 * max_br_offset))) | |
14260 | /* Don't use the stub if this branch is in range. */ | |
14261 | stub_entry = NULL; | |
b25116a9 AM |
14262 | |
14263 | if (stub_entry != NULL) | |
14264 | { | |
14265 | /* Munge up the value and addend so that we call the stub | |
14266 | rather than the procedure directly. */ | |
a4b6fadd AM |
14267 | asection *stub_sec = stub_entry->group->stub_sec; |
14268 | ||
14269 | if (stub_entry->stub_type == ppc_stub_save_res) | |
14270 | relocation += (stub_sec->output_offset | |
14271 | + stub_sec->output_section->vma | |
14272 | + stub_sec->size - htab->sfpr->size | |
14273 | - htab->sfpr->output_offset | |
14274 | - htab->sfpr->output_section->vma); | |
14275 | else | |
14276 | relocation = (stub_entry->stub_offset | |
14277 | + stub_sec->output_offset | |
14278 | + stub_sec->output_section->vma); | |
b25116a9 | 14279 | addend = 0; |
bc30df16 | 14280 | reloc_dest = DEST_STUB; |
3b421ab3 | 14281 | |
794e51c0 AM |
14282 | if ((stub_entry->stub_type == ppc_stub_plt_call |
14283 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
14284 | && (ALWAYS_EMIT_R2SAVE | |
14285 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
3b421ab3 AM |
14286 | && rel + 1 < relend |
14287 | && rel[1].r_offset == rel->r_offset + 4 | |
14288 | && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOCSAVE) | |
14289 | relocation += 4; | |
b25116a9 AM |
14290 | } |
14291 | ||
14292 | if (insn != 0) | |
14293 | { | |
794e51c0 | 14294 | if (is_isa_v2) |
721956f4 | 14295 | { |
b25116a9 AM |
14296 | /* Set 'a' bit. This is 0b00010 in BO field for branch |
14297 | on CR(BI) insns (BO == 001at or 011at), and 0b01000 | |
14298 | for branch on CTR insns (BO == 1a00t or 1a01t). */ | |
14299 | if ((insn & (0x14 << 21)) == (0x04 << 21)) | |
14300 | insn |= 0x02 << 21; | |
14301 | else if ((insn & (0x14 << 21)) == (0x10 << 21)) | |
14302 | insn |= 0x08 << 21; | |
14303 | else | |
14304 | break; | |
14305 | } | |
14306 | else | |
14307 | { | |
14308 | /* Invert 'y' bit if not the default. */ | |
4cc603a5 | 14309 | if ((bfd_signed_vma) (relocation + addend - from) < 0) |
b25116a9 | 14310 | insn ^= 0x01 << 21; |
721956f4 | 14311 | } |
b25116a9 | 14312 | |
95f0d0d2 | 14313 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
5bd4f169 | 14314 | } |
e86ce104 | 14315 | |
06da1e8e AM |
14316 | /* NOP out calls to undefined weak functions. |
14317 | We can thus call a weak function without first | |
14318 | checking whether the function is defined. */ | |
b25116a9 | 14319 | else if (h != NULL |
039b3fef | 14320 | && h->elf.root.type == bfd_link_hash_undefweak |
766bc656 | 14321 | && h->elf.dynindx == -1 |
b25116a9 AM |
14322 | && r_type == R_PPC64_REL24 |
14323 | && relocation == 0 | |
4cc603a5 | 14324 | && addend == 0) |
e86ce104 | 14325 | { |
95f0d0d2 | 14326 | bfd_put_32 (input_bfd, NOP, contents + rel->r_offset); |
c316a17c | 14327 | goto copy_reloc; |
e86ce104 | 14328 | } |
65f38f15 AM |
14329 | break; |
14330 | } | |
5bd4f169 | 14331 | |
65f38f15 | 14332 | /* Set `addend'. */ |
411e1bfb | 14333 | tls_type = 0; |
65f38f15 AM |
14334 | switch (r_type) |
14335 | { | |
14336 | default: | |
25f53a85 | 14337 | info->callbacks->einfo |
695344c0 | 14338 | /* xgettext:c-format */ |
bc30df16 | 14339 | (_("%P: %B: unknown relocation type %d for `%T'\n"), |
d003868e | 14340 | input_bfd, (int) r_type, sym_name); |
5bd4f169 | 14341 | |
65f38f15 | 14342 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 14343 | ret = FALSE; |
c316a17c | 14344 | goto copy_reloc; |
5bd4f169 | 14345 | |
65f38f15 | 14346 | case R_PPC64_NONE: |
411e1bfb | 14347 | case R_PPC64_TLS: |
727fc41e AM |
14348 | case R_PPC64_TLSGD: |
14349 | case R_PPC64_TLSLD: | |
3b421ab3 | 14350 | case R_PPC64_TOCSAVE: |
04c9666a AM |
14351 | case R_PPC64_GNU_VTINHERIT: |
14352 | case R_PPC64_GNU_VTENTRY: | |
006589cf | 14353 | case R_PPC64_ENTRY: |
c316a17c | 14354 | goto copy_reloc; |
5bd4f169 AM |
14355 | |
14356 | /* GOT16 relocations. Like an ADDR16 using the symbol's | |
14357 | address in the GOT as relocation value instead of the | |
411e1bfb | 14358 | symbol's value itself. Also, create a GOT entry for the |
5bd4f169 | 14359 | symbol and put the symbol value there. */ |
411e1bfb AM |
14360 | case R_PPC64_GOT_TLSGD16: |
14361 | case R_PPC64_GOT_TLSGD16_LO: | |
14362 | case R_PPC64_GOT_TLSGD16_HI: | |
14363 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b | 14364 | tls_type = TLS_TLS | TLS_GD; |
411e1bfb AM |
14365 | goto dogot; |
14366 | ||
14367 | case R_PPC64_GOT_TLSLD16: | |
14368 | case R_PPC64_GOT_TLSLD16_LO: | |
14369 | case R_PPC64_GOT_TLSLD16_HI: | |
14370 | case R_PPC64_GOT_TLSLD16_HA: | |
951fd09b | 14371 | tls_type = TLS_TLS | TLS_LD; |
411e1bfb AM |
14372 | goto dogot; |
14373 | ||
14374 | case R_PPC64_GOT_TPREL16_DS: | |
14375 | case R_PPC64_GOT_TPREL16_LO_DS: | |
14376 | case R_PPC64_GOT_TPREL16_HI: | |
14377 | case R_PPC64_GOT_TPREL16_HA: | |
14378 | tls_type = TLS_TLS | TLS_TPREL; | |
14379 | goto dogot; | |
14380 | ||
14381 | case R_PPC64_GOT_DTPREL16_DS: | |
14382 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
14383 | case R_PPC64_GOT_DTPREL16_HI: | |
14384 | case R_PPC64_GOT_DTPREL16_HA: | |
14385 | tls_type = TLS_TLS | TLS_DTPREL; | |
14386 | goto dogot; | |
14387 | ||
65f38f15 AM |
14388 | case R_PPC64_GOT16: |
14389 | case R_PPC64_GOT16_LO: | |
14390 | case R_PPC64_GOT16_HI: | |
14391 | case R_PPC64_GOT16_HA: | |
14392 | case R_PPC64_GOT16_DS: | |
14393 | case R_PPC64_GOT16_LO_DS: | |
411e1bfb | 14394 | dogot: |
5bd4f169 AM |
14395 | { |
14396 | /* Relocation is to the entry for this symbol in the global | |
14397 | offset table. */ | |
e717da7e | 14398 | asection *got; |
d881513a | 14399 | bfd_vma *offp; |
5bd4f169 | 14400 | bfd_vma off; |
d881513a | 14401 | unsigned long indx = 0; |
927be08e | 14402 | struct got_entry *ent; |
65f38f15 | 14403 | |
d881513a AM |
14404 | if (tls_type == (TLS_TLS | TLS_LD) |
14405 | && (h == NULL | |
f5385ebf | 14406 | || !h->elf.def_dynamic)) |
927be08e | 14407 | ent = ppc64_tlsld_got (input_bfd); |
411e1bfb | 14408 | else |
5bd4f169 | 14409 | { |
5bd4f169 | 14410 | |
d881513a AM |
14411 | if (h != NULL) |
14412 | { | |
14413 | bfd_boolean dyn = htab->elf.dynamic_sections_created; | |
0e1862bb | 14414 | if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, bfd_link_pic (info), |
039b3fef | 14415 | &h->elf) |
0e1862bb | 14416 | || (bfd_link_pic (info) |
afe397ea | 14417 | && SYMBOL_REFERENCES_LOCAL (info, &h->elf))) |
d881513a AM |
14418 | /* This is actually a static link, or it is a |
14419 | -Bsymbolic link and the symbol is defined | |
14420 | locally, or the symbol was forced to be local | |
14421 | because of a version file. */ | |
14422 | ; | |
14423 | else | |
14424 | { | |
14acf4dc | 14425 | BFD_ASSERT (h->elf.dynindx != -1); |
039b3fef | 14426 | indx = h->elf.dynindx; |
d881513a AM |
14427 | unresolved_reloc = FALSE; |
14428 | } | |
039b3fef | 14429 | ent = h->elf.got.glist; |
d881513a | 14430 | } |
411e1bfb | 14431 | else |
5bd4f169 | 14432 | { |
d881513a AM |
14433 | if (local_got_ents == NULL) |
14434 | abort (); | |
14435 | ent = local_got_ents[r_symndx]; | |
5bd4f169 | 14436 | } |
d881513a AM |
14437 | |
14438 | for (; ent != NULL; ent = ent->next) | |
31c76678 | 14439 | if (ent->addend == orig_rel.r_addend |
e717da7e | 14440 | && ent->owner == input_bfd |
d881513a AM |
14441 | && ent->tls_type == tls_type) |
14442 | break; | |
5bd4f169 | 14443 | } |
411e1bfb | 14444 | |
927be08e AM |
14445 | if (ent == NULL) |
14446 | abort (); | |
14447 | if (ent->is_indirect) | |
14448 | ent = ent->got.ent; | |
14449 | offp = &ent->got.offset; | |
14450 | got = ppc64_elf_tdata (ent->owner)->got; | |
e717da7e AM |
14451 | if (got == NULL) |
14452 | abort (); | |
14453 | ||
411e1bfb AM |
14454 | /* The offset must always be a multiple of 8. We use the |
14455 | least significant bit to record whether we have already | |
14456 | processed this entry. */ | |
d881513a | 14457 | off = *offp; |
411e1bfb AM |
14458 | if ((off & 1) != 0) |
14459 | off &= ~1; | |
5bd4f169 AM |
14460 | else |
14461 | { | |
411e1bfb AM |
14462 | /* Generate relocs for the dynamic linker, except in |
14463 | the case of TLSLD where we'll use one entry per | |
14464 | module. */ | |
25f23106 AM |
14465 | asection *relgot; |
14466 | bfd_boolean ifunc; | |
e717da7e | 14467 | |
d881513a | 14468 | *offp = off | 1; |
25f23106 AM |
14469 | relgot = NULL; |
14470 | ifunc = (h != NULL | |
14471 | ? h->elf.type == STT_GNU_IFUNC | |
14472 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC); | |
19e08130 | 14473 | if (ifunc) |
33e44f2e | 14474 | relgot = htab->elf.irelplt; |
0e1862bb | 14475 | else if ((bfd_link_pic (info) || indx != 0) |
19e08130 AM |
14476 | && (h == NULL |
14477 | || (tls_type == (TLS_TLS | TLS_LD) | |
14478 | && !h->elf.def_dynamic) | |
14479 | || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT | |
14480 | || h->elf.root.type != bfd_link_hash_undefweak)) | |
14481 | relgot = ppc64_elf_tdata (ent->owner)->relgot; | |
25f23106 | 14482 | if (relgot != NULL) |
5bd4f169 | 14483 | { |
e717da7e AM |
14484 | outrel.r_offset = (got->output_section->vma |
14485 | + got->output_offset | |
411e1bfb | 14486 | + off); |
4cc603a5 | 14487 | outrel.r_addend = addend; |
d881513a | 14488 | if (tls_type & (TLS_LD | TLS_GD)) |
5bd4f169 | 14489 | { |
411e1bfb | 14490 | outrel.r_addend = 0; |
e515b051 | 14491 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPMOD64); |
d881513a AM |
14492 | if (tls_type == (TLS_TLS | TLS_GD)) |
14493 | { | |
e717da7e AM |
14494 | loc = relgot->contents; |
14495 | loc += (relgot->reloc_count++ | |
d881513a AM |
14496 | * sizeof (Elf64_External_Rela)); |
14497 | bfd_elf64_swap_reloca_out (output_bfd, | |
14498 | &outrel, loc); | |
e515b051 | 14499 | outrel.r_offset += 8; |
4cc603a5 | 14500 | outrel.r_addend = addend; |
d881513a AM |
14501 | outrel.r_info |
14502 | = ELF64_R_INFO (indx, R_PPC64_DTPREL64); | |
d881513a | 14503 | } |
411e1bfb | 14504 | } |
951fd09b | 14505 | else if (tls_type == (TLS_TLS | TLS_DTPREL)) |
411e1bfb | 14506 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64); |
951fd09b | 14507 | else if (tls_type == (TLS_TLS | TLS_TPREL)) |
411e1bfb | 14508 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_TPREL64); |
25f23106 AM |
14509 | else if (indx != 0) |
14510 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT); | |
14511 | else | |
81407a69 | 14512 | { |
25f23106 AM |
14513 | if (ifunc) |
14514 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE); | |
14515 | else | |
14516 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
81407a69 AM |
14517 | |
14518 | /* Write the .got section contents for the sake | |
14519 | of prelink. */ | |
e717da7e | 14520 | loc = got->contents + off; |
23fbd6fa JJ |
14521 | bfd_put_64 (output_bfd, outrel.r_addend + relocation, |
14522 | loc); | |
81407a69 | 14523 | } |
81407a69 AM |
14524 | |
14525 | if (indx == 0 && tls_type != (TLS_TLS | TLS_LD)) | |
e515b051 AM |
14526 | { |
14527 | outrel.r_addend += relocation; | |
14528 | if (tls_type & (TLS_GD | TLS_DTPREL | TLS_TPREL)) | |
989f9879 AM |
14529 | { |
14530 | if (htab->elf.tls_sec == NULL) | |
14531 | outrel.r_addend = 0; | |
14532 | else | |
14533 | outrel.r_addend -= htab->elf.tls_sec->vma; | |
14534 | } | |
e515b051 | 14535 | } |
e717da7e AM |
14536 | loc = relgot->contents; |
14537 | loc += (relgot->reloc_count++ | |
411e1bfb AM |
14538 | * sizeof (Elf64_External_Rela)); |
14539 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); | |
14540 | } | |
14541 | ||
ad8e1ba5 | 14542 | /* Init the .got section contents here if we're not |
81407a69 | 14543 | emitting a reloc. */ |
d881513a | 14544 | else |
411e1bfb | 14545 | { |
4cc603a5 | 14546 | relocation += addend; |
7b609f53 AM |
14547 | if (tls_type == (TLS_TLS | TLS_LD)) |
14548 | relocation = 1; | |
14549 | else if (tls_type != 0) | |
411e1bfb | 14550 | { |
989f9879 AM |
14551 | if (htab->elf.tls_sec == NULL) |
14552 | relocation = 0; | |
14553 | else | |
14554 | { | |
14555 | relocation -= htab->elf.tls_sec->vma + DTP_OFFSET; | |
14556 | if (tls_type == (TLS_TLS | TLS_TPREL)) | |
14557 | relocation += DTP_OFFSET - TP_OFFSET; | |
14558 | } | |
5bd4f169 | 14559 | |
7b609f53 AM |
14560 | if (tls_type == (TLS_TLS | TLS_GD)) |
14561 | { | |
14562 | bfd_put_64 (output_bfd, relocation, | |
e717da7e | 14563 | got->contents + off + 8); |
7b609f53 AM |
14564 | relocation = 1; |
14565 | } | |
411e1bfb | 14566 | } |
7b609f53 | 14567 | |
411e1bfb | 14568 | bfd_put_64 (output_bfd, relocation, |
e717da7e | 14569 | got->contents + off); |
5bd4f169 AM |
14570 | } |
14571 | } | |
14572 | ||
65f38f15 AM |
14573 | if (off >= (bfd_vma) -2) |
14574 | abort (); | |
14575 | ||
bf102f86 | 14576 | relocation = got->output_section->vma + got->output_offset + off; |
6f20ed8a | 14577 | addend = -(TOCstart + htab->sec_info[input_section->id].toc_off); |
5bd4f169 | 14578 | } |
65f38f15 AM |
14579 | break; |
14580 | ||
14581 | case R_PPC64_PLT16_HA: | |
14582 | case R_PPC64_PLT16_HI: | |
14583 | case R_PPC64_PLT16_LO: | |
14584 | case R_PPC64_PLT32: | |
14585 | case R_PPC64_PLT64: | |
14586 | /* Relocation is to the entry for this symbol in the | |
14587 | procedure linkage table. */ | |
cbf95972 AM |
14588 | { |
14589 | struct plt_entry **plt_list = NULL; | |
14590 | if (h != NULL) | |
14591 | plt_list = &h->elf.plt.plist; | |
14592 | else if (local_got_ents != NULL) | |
14593 | { | |
14594 | struct plt_entry **local_plt = (struct plt_entry **) | |
14595 | (local_got_ents + symtab_hdr->sh_info); | |
14596 | unsigned char *local_got_tls_masks = (unsigned char *) | |
14597 | (local_plt + symtab_hdr->sh_info); | |
14598 | if ((local_got_tls_masks[r_symndx] & PLT_IFUNC) != 0) | |
14599 | plt_list = local_plt + r_symndx; | |
14600 | } | |
14601 | if (plt_list) | |
14602 | { | |
14603 | struct plt_entry *ent; | |
65f38f15 | 14604 | |
cbf95972 AM |
14605 | for (ent = *plt_list; ent != NULL; ent = ent->next) |
14606 | if (ent->plt.offset != (bfd_vma) -1 | |
14607 | && ent->addend == orig_rel.r_addend) | |
14608 | { | |
14609 | asection *plt; | |
14610 | ||
14611 | plt = htab->elf.splt; | |
14612 | if (!htab->elf.dynamic_sections_created | |
14613 | || h == NULL | |
14614 | || h->elf.dynindx == -1) | |
14615 | plt = htab->elf.iplt; | |
14616 | relocation = (plt->output_section->vma | |
14617 | + plt->output_offset | |
14618 | + ent->plt.offset); | |
14619 | addend = 0; | |
14620 | unresolved_reloc = FALSE; | |
14621 | break; | |
14622 | } | |
14623 | } | |
14624 | } | |
65f38f15 | 14625 | break; |
5bd4f169 | 14626 | |
0b13192e AM |
14627 | case R_PPC64_TOC: |
14628 | /* Relocation value is TOC base. */ | |
14629 | relocation = TOCstart; | |
cf35638d | 14630 | if (r_symndx == STN_UNDEF) |
6f20ed8a | 14631 | relocation += htab->sec_info[input_section->id].toc_off; |
8517fae7 AM |
14632 | else if (unresolved_reloc) |
14633 | ; | |
6f20ed8a AM |
14634 | else if (sec != NULL && sec->id < htab->sec_info_arr_size) |
14635 | relocation += htab->sec_info[sec->id].toc_off; | |
0b13192e AM |
14636 | else |
14637 | unresolved_reloc = TRUE; | |
ab96bf03 | 14638 | goto dodyn; |
0b13192e | 14639 | |
5bd4f169 AM |
14640 | /* TOC16 relocs. We want the offset relative to the TOC base, |
14641 | which is the address of the start of the TOC plus 0x8000. | |
14642 | The TOC consists of sections .got, .toc, .tocbss, and .plt, | |
14643 | in this order. */ | |
65f38f15 AM |
14644 | case R_PPC64_TOC16: |
14645 | case R_PPC64_TOC16_LO: | |
14646 | case R_PPC64_TOC16_HI: | |
14647 | case R_PPC64_TOC16_DS: | |
14648 | case R_PPC64_TOC16_LO_DS: | |
14649 | case R_PPC64_TOC16_HA: | |
6f20ed8a | 14650 | addend -= TOCstart + htab->sec_info[input_section->id].toc_off; |
5bd4f169 AM |
14651 | break; |
14652 | ||
14653 | /* Relocate against the beginning of the section. */ | |
65f38f15 AM |
14654 | case R_PPC64_SECTOFF: |
14655 | case R_PPC64_SECTOFF_LO: | |
14656 | case R_PPC64_SECTOFF_HI: | |
14657 | case R_PPC64_SECTOFF_DS: | |
14658 | case R_PPC64_SECTOFF_LO_DS: | |
14659 | case R_PPC64_SECTOFF_HA: | |
4ce794b7 | 14660 | if (sec != NULL) |
65f38f15 | 14661 | addend -= sec->output_section->vma; |
5bd4f169 AM |
14662 | break; |
14663 | ||
25f23106 AM |
14664 | case R_PPC64_REL16: |
14665 | case R_PPC64_REL16_LO: | |
14666 | case R_PPC64_REL16_HI: | |
14667 | case R_PPC64_REL16_HA: | |
a680de9a | 14668 | case R_PPC64_REL16DX_HA: |
25f23106 AM |
14669 | break; |
14670 | ||
721956f4 AM |
14671 | case R_PPC64_REL14: |
14672 | case R_PPC64_REL14_BRNTAKEN: | |
14673 | case R_PPC64_REL14_BRTAKEN: | |
5d1634d7 AM |
14674 | case R_PPC64_REL24: |
14675 | break; | |
14676 | ||
411e1bfb AM |
14677 | case R_PPC64_TPREL16: |
14678 | case R_PPC64_TPREL16_LO: | |
14679 | case R_PPC64_TPREL16_HI: | |
14680 | case R_PPC64_TPREL16_HA: | |
14681 | case R_PPC64_TPREL16_DS: | |
14682 | case R_PPC64_TPREL16_LO_DS: | |
f9c6b907 AM |
14683 | case R_PPC64_TPREL16_HIGH: |
14684 | case R_PPC64_TPREL16_HIGHA: | |
411e1bfb AM |
14685 | case R_PPC64_TPREL16_HIGHER: |
14686 | case R_PPC64_TPREL16_HIGHERA: | |
14687 | case R_PPC64_TPREL16_HIGHEST: | |
14688 | case R_PPC64_TPREL16_HIGHESTA: | |
766bc656 AM |
14689 | if (h != NULL |
14690 | && h->elf.root.type == bfd_link_hash_undefweak | |
14691 | && h->elf.dynindx == -1) | |
14692 | { | |
14693 | /* Make this relocation against an undefined weak symbol | |
14694 | resolve to zero. This is really just a tweak, since | |
14695 | code using weak externs ought to check that they are | |
14696 | defined before using them. */ | |
14697 | bfd_byte *p = contents + rel->r_offset - d_offset; | |
14698 | ||
95f0d0d2 | 14699 | insn = bfd_get_32 (input_bfd, p); |
766bc656 AM |
14700 | insn = _bfd_elf_ppc_at_tprel_transform (insn, 13); |
14701 | if (insn != 0) | |
95f0d0d2 | 14702 | bfd_put_32 (input_bfd, insn, p); |
766bc656 AM |
14703 | break; |
14704 | } | |
989f9879 AM |
14705 | if (htab->elf.tls_sec != NULL) |
14706 | addend -= htab->elf.tls_sec->vma + TP_OFFSET; | |
0e1862bb | 14707 | if (bfd_link_pic (info)) |
411e1bfb AM |
14708 | /* The TPREL16 relocs shouldn't really be used in shared |
14709 | libs as they will result in DT_TEXTREL being set, but | |
14710 | support them anyway. */ | |
14711 | goto dodyn; | |
14712 | break; | |
14713 | ||
14714 | case R_PPC64_DTPREL16: | |
14715 | case R_PPC64_DTPREL16_LO: | |
14716 | case R_PPC64_DTPREL16_HI: | |
14717 | case R_PPC64_DTPREL16_HA: | |
14718 | case R_PPC64_DTPREL16_DS: | |
14719 | case R_PPC64_DTPREL16_LO_DS: | |
f9c6b907 AM |
14720 | case R_PPC64_DTPREL16_HIGH: |
14721 | case R_PPC64_DTPREL16_HIGHA: | |
411e1bfb AM |
14722 | case R_PPC64_DTPREL16_HIGHER: |
14723 | case R_PPC64_DTPREL16_HIGHERA: | |
14724 | case R_PPC64_DTPREL16_HIGHEST: | |
14725 | case R_PPC64_DTPREL16_HIGHESTA: | |
989f9879 AM |
14726 | if (htab->elf.tls_sec != NULL) |
14727 | addend -= htab->elf.tls_sec->vma + DTP_OFFSET; | |
411e1bfb AM |
14728 | break; |
14729 | ||
45965137 AM |
14730 | case R_PPC64_ADDR64_LOCAL: |
14731 | addend += PPC64_LOCAL_ENTRY_OFFSET (h != NULL | |
14732 | ? h->elf.other | |
14733 | : sym->st_other); | |
14734 | break; | |
14735 | ||
e515b051 AM |
14736 | case R_PPC64_DTPMOD64: |
14737 | relocation = 1; | |
14738 | addend = 0; | |
14739 | goto dodyn; | |
14740 | ||
411e1bfb | 14741 | case R_PPC64_TPREL64: |
989f9879 AM |
14742 | if (htab->elf.tls_sec != NULL) |
14743 | addend -= htab->elf.tls_sec->vma + TP_OFFSET; | |
411e1bfb AM |
14744 | goto dodyn; |
14745 | ||
14746 | case R_PPC64_DTPREL64: | |
989f9879 AM |
14747 | if (htab->elf.tls_sec != NULL) |
14748 | addend -= htab->elf.tls_sec->vma + DTP_OFFSET; | |
1a0670f3 | 14749 | /* Fall through. */ |
411e1bfb | 14750 | |
65f38f15 AM |
14751 | /* Relocations that may need to be propagated if this is a |
14752 | dynamic object. */ | |
04c9666a | 14753 | case R_PPC64_REL30: |
65f38f15 AM |
14754 | case R_PPC64_REL32: |
14755 | case R_PPC64_REL64: | |
14756 | case R_PPC64_ADDR14: | |
14757 | case R_PPC64_ADDR14_BRNTAKEN: | |
14758 | case R_PPC64_ADDR14_BRTAKEN: | |
14759 | case R_PPC64_ADDR16: | |
14760 | case R_PPC64_ADDR16_DS: | |
14761 | case R_PPC64_ADDR16_HA: | |
14762 | case R_PPC64_ADDR16_HI: | |
f9c6b907 AM |
14763 | case R_PPC64_ADDR16_HIGH: |
14764 | case R_PPC64_ADDR16_HIGHA: | |
65f38f15 AM |
14765 | case R_PPC64_ADDR16_HIGHER: |
14766 | case R_PPC64_ADDR16_HIGHERA: | |
14767 | case R_PPC64_ADDR16_HIGHEST: | |
14768 | case R_PPC64_ADDR16_HIGHESTA: | |
14769 | case R_PPC64_ADDR16_LO: | |
14770 | case R_PPC64_ADDR16_LO_DS: | |
14771 | case R_PPC64_ADDR24: | |
65f38f15 AM |
14772 | case R_PPC64_ADDR32: |
14773 | case R_PPC64_ADDR64: | |
14774 | case R_PPC64_UADDR16: | |
14775 | case R_PPC64_UADDR32: | |
14776 | case R_PPC64_UADDR64: | |
411e1bfb | 14777 | dodyn: |
5d1634d7 | 14778 | if ((input_section->flags & SEC_ALLOC) == 0) |
ec338859 AM |
14779 | break; |
14780 | ||
41bd81ab AM |
14781 | if (NO_OPD_RELOCS && is_opd) |
14782 | break; | |
14783 | ||
8a9e8e72 AM |
14784 | if (bfd_link_pic (info) |
14785 | ? ((h != NULL && pc_dynrelocs (h)) | |
14786 | || must_be_dyn_reloc (info, r_type)) | |
14787 | : (h != NULL | |
14788 | ? h->dyn_relocs != NULL | |
d311bc8b | 14789 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)) |
65f38f15 | 14790 | { |
b34976b6 | 14791 | bfd_boolean skip, relocate; |
65f38f15 | 14792 | asection *sreloc; |
1cf1f670 | 14793 | bfd_vma out_off; |
65f38f15 AM |
14794 | |
14795 | /* When generating a dynamic object, these relocations | |
14796 | are copied into the output file to be resolved at run | |
14797 | time. */ | |
14798 | ||
b34976b6 AM |
14799 | skip = FALSE; |
14800 | relocate = FALSE; | |
65f38f15 | 14801 | |
1cf1f670 AM |
14802 | out_off = _bfd_elf_section_offset (output_bfd, info, |
14803 | input_section, rel->r_offset); | |
14804 | if (out_off == (bfd_vma) -1) | |
b34976b6 | 14805 | skip = TRUE; |
1cf1f670 | 14806 | else if (out_off == (bfd_vma) -2) |
b34976b6 | 14807 | skip = TRUE, relocate = TRUE; |
1cf1f670 AM |
14808 | out_off += (input_section->output_section->vma |
14809 | + input_section->output_offset); | |
14810 | outrel.r_offset = out_off; | |
411e1bfb | 14811 | outrel.r_addend = rel->r_addend; |
65f38f15 | 14812 | |
1cf1f670 AM |
14813 | /* Optimize unaligned reloc use. */ |
14814 | if ((r_type == R_PPC64_ADDR64 && (out_off & 7) != 0) | |
14815 | || (r_type == R_PPC64_UADDR64 && (out_off & 7) == 0)) | |
14816 | r_type ^= R_PPC64_ADDR64 ^ R_PPC64_UADDR64; | |
14817 | else if ((r_type == R_PPC64_ADDR32 && (out_off & 3) != 0) | |
14818 | || (r_type == R_PPC64_UADDR32 && (out_off & 3) == 0)) | |
14819 | r_type ^= R_PPC64_ADDR32 ^ R_PPC64_UADDR32; | |
14820 | else if ((r_type == R_PPC64_ADDR16 && (out_off & 1) != 0) | |
14821 | || (r_type == R_PPC64_UADDR16 && (out_off & 1) == 0)) | |
14822 | r_type ^= R_PPC64_ADDR16 ^ R_PPC64_UADDR16; | |
14823 | ||
65f38f15 | 14824 | if (skip) |
0bb2d96a | 14825 | memset (&outrel, 0, sizeof outrel); |
afe397ea | 14826 | else if (!SYMBOL_REFERENCES_LOCAL (info, &h->elf) |
0b13192e AM |
14827 | && !is_opd |
14828 | && r_type != R_PPC64_TOC) | |
14acf4dc MR |
14829 | { |
14830 | BFD_ASSERT (h->elf.dynindx != -1); | |
14831 | outrel.r_info = ELF64_R_INFO (h->elf.dynindx, r_type); | |
14832 | } | |
65f38f15 AM |
14833 | else |
14834 | { | |
41bd81ab AM |
14835 | /* This symbol is local, or marked to become local, |
14836 | or this is an opd section reloc which must point | |
14837 | at a local function. */ | |
65f38f15 | 14838 | outrel.r_addend += relocation; |
e86ce104 | 14839 | if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC) |
65f38f15 | 14840 | { |
3fad3c7c | 14841 | if (is_opd && h != NULL) |
afbe61cf AM |
14842 | { |
14843 | /* Lie about opd entries. This case occurs | |
14844 | when building shared libraries and we | |
14845 | reference a function in another shared | |
3fad3c7c AM |
14846 | lib. The same thing happens for a weak |
14847 | definition in an application that's | |
14848 | overridden by a strong definition in a | |
14849 | shared lib. (I believe this is a generic | |
14850 | bug in binutils handling of weak syms.) | |
14851 | In these cases we won't use the opd | |
1e2f5b6e | 14852 | entry in this lib. */ |
b34976b6 | 14853 | unresolved_reloc = FALSE; |
afbe61cf | 14854 | } |
25f23106 AM |
14855 | if (!is_opd |
14856 | && r_type == R_PPC64_ADDR64 | |
14857 | && (h != NULL | |
14858 | ? h->elf.type == STT_GNU_IFUNC | |
14859 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)) | |
14860 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE); | |
14861 | else | |
14862 | { | |
14863 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
81407a69 | 14864 | |
25f23106 AM |
14865 | /* We need to relocate .opd contents for ld.so. |
14866 | Prelink also wants simple and consistent rules | |
14867 | for relocs. This make all RELATIVE relocs have | |
14868 | *r_offset equal to r_addend. */ | |
14869 | relocate = TRUE; | |
14870 | } | |
65f38f15 AM |
14871 | } |
14872 | else | |
14873 | { | |
14874 | long indx = 0; | |
14875 | ||
25f23106 AM |
14876 | if (h != NULL |
14877 | ? h->elf.type == STT_GNU_IFUNC | |
14878 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
14879 | { | |
25f53a85 | 14880 | info->callbacks->einfo |
695344c0 | 14881 | /* xgettext:c-format */ |
bc30df16 AM |
14882 | (_("%P: %H: %s for indirect " |
14883 | "function `%T' unsupported\n"), | |
25f53a85 | 14884 | input_bfd, input_section, rel->r_offset, |
25f23106 AM |
14885 | ppc64_elf_howto_table[r_type]->name, |
14886 | sym_name); | |
14887 | ret = FALSE; | |
14888 | } | |
cf35638d | 14889 | else if (r_symndx == STN_UNDEF || bfd_is_abs_section (sec)) |
65f38f15 AM |
14890 | ; |
14891 | else if (sec == NULL || sec->owner == NULL) | |
14892 | { | |
14893 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 14894 | return FALSE; |
65f38f15 AM |
14895 | } |
14896 | else | |
14897 | { | |
14898 | asection *osec; | |
14899 | ||
14900 | osec = sec->output_section; | |
14901 | indx = elf_section_data (osec)->dynindx; | |
14902 | ||
74541ad4 AM |
14903 | if (indx == 0) |
14904 | { | |
14905 | if ((osec->flags & SEC_READONLY) == 0 | |
14906 | && htab->elf.data_index_section != NULL) | |
14907 | osec = htab->elf.data_index_section; | |
14908 | else | |
14909 | osec = htab->elf.text_index_section; | |
14910 | indx = elf_section_data (osec)->dynindx; | |
14911 | } | |
14912 | BFD_ASSERT (indx != 0); | |
14913 | ||
65f38f15 AM |
14914 | /* We are turning this relocation into one |
14915 | against a section symbol, so subtract out | |
14916 | the output section's address but not the | |
14917 | offset of the input section in the output | |
14918 | section. */ | |
14919 | outrel.r_addend -= osec->vma; | |
14920 | } | |
14921 | ||
14922 | outrel.r_info = ELF64_R_INFO (indx, r_type); | |
14923 | } | |
14924 | } | |
14925 | ||
14926 | sreloc = elf_section_data (input_section)->sreloc; | |
19e08130 AM |
14927 | if (h != NULL |
14928 | ? h->elf.type == STT_GNU_IFUNC | |
14929 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
33e44f2e | 14930 | sreloc = htab->elf.irelplt; |
65f38f15 AM |
14931 | if (sreloc == NULL) |
14932 | abort (); | |
14933 | ||
dfbb6ac9 AM |
14934 | if (sreloc->reloc_count * sizeof (Elf64_External_Rela) |
14935 | >= sreloc->size) | |
14936 | abort (); | |
947216bf AM |
14937 | loc = sreloc->contents; |
14938 | loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela); | |
65f38f15 AM |
14939 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); |
14940 | ||
14941 | /* If this reloc is against an external symbol, it will | |
14942 | be computed at runtime, so there's no need to do | |
81407a69 AM |
14943 | anything now. However, for the sake of prelink ensure |
14944 | that the section contents are a known value. */ | |
65f38f15 | 14945 | if (! relocate) |
81407a69 AM |
14946 | { |
14947 | unresolved_reloc = FALSE; | |
14948 | /* The value chosen here is quite arbitrary as ld.so | |
14949 | ignores section contents except for the special | |
14950 | case of .opd where the contents might be accessed | |
14951 | before relocation. Choose zero, as that won't | |
14952 | cause reloc overflow. */ | |
14953 | relocation = 0; | |
14954 | addend = 0; | |
14955 | /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs | |
14956 | to improve backward compatibility with older | |
14957 | versions of ld. */ | |
14958 | if (r_type == R_PPC64_ADDR64) | |
14959 | addend = outrel.r_addend; | |
14960 | /* Adjust pc_relative relocs to have zero in *r_offset. */ | |
4ce794b7 | 14961 | else if (ppc64_elf_howto_table[r_type]->pc_relative) |
000732f7 AM |
14962 | addend = (input_section->output_section->vma |
14963 | + input_section->output_offset | |
14964 | + rel->r_offset); | |
81407a69 | 14965 | } |
65f38f15 | 14966 | } |
5bd4f169 AM |
14967 | break; |
14968 | ||
65f38f15 AM |
14969 | case R_PPC64_COPY: |
14970 | case R_PPC64_GLOB_DAT: | |
14971 | case R_PPC64_JMP_SLOT: | |
25f23106 | 14972 | case R_PPC64_JMP_IREL: |
65f38f15 AM |
14973 | case R_PPC64_RELATIVE: |
14974 | /* We shouldn't ever see these dynamic relocs in relocatable | |
14975 | files. */ | |
ae9a127f | 14976 | /* Fall through. */ |
65f38f15 AM |
14977 | |
14978 | case R_PPC64_PLTGOT16: | |
14979 | case R_PPC64_PLTGOT16_DS: | |
14980 | case R_PPC64_PLTGOT16_HA: | |
14981 | case R_PPC64_PLTGOT16_HI: | |
14982 | case R_PPC64_PLTGOT16_LO: | |
14983 | case R_PPC64_PLTGOT16_LO_DS: | |
14984 | case R_PPC64_PLTREL32: | |
14985 | case R_PPC64_PLTREL64: | |
14986 | /* These ones haven't been implemented yet. */ | |
14987 | ||
25f53a85 | 14988 | info->callbacks->einfo |
695344c0 | 14989 | /* xgettext:c-format */ |
bc30df16 | 14990 | (_("%P: %B: %s is not supported for `%T'\n"), |
d003868e | 14991 | input_bfd, |
4ce794b7 | 14992 | ppc64_elf_howto_table[r_type]->name, sym_name); |
5bd4f169 AM |
14993 | |
14994 | bfd_set_error (bfd_error_invalid_operation); | |
b34976b6 | 14995 | ret = FALSE; |
c316a17c | 14996 | goto copy_reloc; |
65f38f15 | 14997 | } |
5bd4f169 | 14998 | |
67f0cbdb AM |
14999 | /* Multi-instruction sequences that access the TOC can be |
15000 | optimized, eg. addis ra,r2,0; addi rb,ra,x; | |
15001 | to nop; addi rb,r2,x; */ | |
15002 | switch (r_type) | |
15003 | { | |
15004 | default: | |
15005 | break; | |
15006 | ||
15007 | case R_PPC64_GOT_TLSLD16_HI: | |
15008 | case R_PPC64_GOT_TLSGD16_HI: | |
15009 | case R_PPC64_GOT_TPREL16_HI: | |
15010 | case R_PPC64_GOT_DTPREL16_HI: | |
15011 | case R_PPC64_GOT16_HI: | |
15012 | case R_PPC64_TOC16_HI: | |
15013 | /* These relocs would only be useful if building up an | |
15014 | offset to later add to r2, perhaps in an indexed | |
15015 | addressing mode instruction. Don't try to optimize. | |
15016 | Unfortunately, the possibility of someone building up an | |
15017 | offset like this or even with the HA relocs, means that | |
15018 | we need to check the high insn when optimizing the low | |
15019 | insn. */ | |
15020 | break; | |
15021 | ||
15022 | case R_PPC64_GOT_TLSLD16_HA: | |
15023 | case R_PPC64_GOT_TLSGD16_HA: | |
15024 | case R_PPC64_GOT_TPREL16_HA: | |
15025 | case R_PPC64_GOT_DTPREL16_HA: | |
15026 | case R_PPC64_GOT16_HA: | |
15027 | case R_PPC64_TOC16_HA: | |
98528052 | 15028 | if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000 |
560c8763 | 15029 | && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn) |
98528052 AM |
15030 | { |
15031 | bfd_byte *p = contents + (rel->r_offset & ~3); | |
15032 | bfd_put_32 (input_bfd, NOP, p); | |
15033 | } | |
67f0cbdb AM |
15034 | break; |
15035 | ||
15036 | case R_PPC64_GOT_TLSLD16_LO: | |
15037 | case R_PPC64_GOT_TLSGD16_LO: | |
15038 | case R_PPC64_GOT_TPREL16_LO_DS: | |
15039 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
15040 | case R_PPC64_GOT16_LO: | |
15041 | case R_PPC64_GOT16_LO_DS: | |
15042 | case R_PPC64_TOC16_LO: | |
15043 | case R_PPC64_TOC16_LO_DS: | |
98528052 | 15044 | if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000 |
560c8763 | 15045 | && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn) |
67f0cbdb AM |
15046 | { |
15047 | bfd_byte *p = contents + (rel->r_offset & ~3); | |
15048 | insn = bfd_get_32 (input_bfd, p); | |
560c8763 AM |
15049 | if ((insn & (0x3f << 26)) == 12u << 26 /* addic */) |
15050 | { | |
15051 | /* Transform addic to addi when we change reg. */ | |
15052 | insn &= ~((0x3f << 26) | (0x1f << 16)); | |
15053 | insn |= (14u << 26) | (2 << 16); | |
15054 | } | |
15055 | else | |
67f0cbdb | 15056 | { |
98528052 AM |
15057 | insn &= ~(0x1f << 16); |
15058 | insn |= 2 << 16; | |
67f0cbdb | 15059 | } |
560c8763 | 15060 | bfd_put_32 (input_bfd, insn, p); |
67f0cbdb AM |
15061 | } |
15062 | break; | |
15063 | } | |
15064 | ||
65f38f15 | 15065 | /* Do any further special processing. */ |
b80eed39 | 15066 | howto = ppc64_elf_howto_table[(int) r_type]; |
65f38f15 AM |
15067 | switch (r_type) |
15068 | { | |
15069 | default: | |
15070 | break; | |
15071 | ||
25f23106 | 15072 | case R_PPC64_REL16_HA: |
a680de9a | 15073 | case R_PPC64_REL16DX_HA: |
f9c6b907 AM |
15074 | case R_PPC64_ADDR16_HA: |
15075 | case R_PPC64_ADDR16_HIGHA: | |
65f38f15 AM |
15076 | case R_PPC64_ADDR16_HIGHERA: |
15077 | case R_PPC64_ADDR16_HIGHESTA: | |
65f38f15 AM |
15078 | case R_PPC64_TOC16_HA: |
15079 | case R_PPC64_SECTOFF_HA: | |
411e1bfb | 15080 | case R_PPC64_TPREL16_HA: |
f9c6b907 | 15081 | case R_PPC64_TPREL16_HIGHA: |
411e1bfb | 15082 | case R_PPC64_TPREL16_HIGHERA: |
411e1bfb | 15083 | case R_PPC64_TPREL16_HIGHESTA: |
f9c6b907 AM |
15084 | case R_PPC64_DTPREL16_HA: |
15085 | case R_PPC64_DTPREL16_HIGHA: | |
411e1bfb | 15086 | case R_PPC64_DTPREL16_HIGHERA: |
411e1bfb | 15087 | case R_PPC64_DTPREL16_HIGHESTA: |
65f38f15 AM |
15088 | /* It's just possible that this symbol is a weak symbol |
15089 | that's not actually defined anywhere. In that case, | |
15090 | 'sec' would be NULL, and we should leave the symbol | |
15091 | alone (it will be set to zero elsewhere in the link). */ | |
5c5f6e17 AM |
15092 | if (sec == NULL) |
15093 | break; | |
1a0670f3 | 15094 | /* Fall through. */ |
5c5f6e17 AM |
15095 | |
15096 | case R_PPC64_GOT16_HA: | |
15097 | case R_PPC64_PLTGOT16_HA: | |
15098 | case R_PPC64_PLT16_HA: | |
15099 | case R_PPC64_GOT_TLSGD16_HA: | |
15100 | case R_PPC64_GOT_TLSLD16_HA: | |
15101 | case R_PPC64_GOT_TPREL16_HA: | |
15102 | case R_PPC64_GOT_DTPREL16_HA: | |
15103 | /* Add 0x10000 if sign bit in 0:15 is set. | |
15104 | Bits 0:15 are not used. */ | |
15105 | addend += 0x8000; | |
65f38f15 AM |
15106 | break; |
15107 | ||
15108 | case R_PPC64_ADDR16_DS: | |
15109 | case R_PPC64_ADDR16_LO_DS: | |
15110 | case R_PPC64_GOT16_DS: | |
15111 | case R_PPC64_GOT16_LO_DS: | |
15112 | case R_PPC64_PLT16_LO_DS: | |
15113 | case R_PPC64_SECTOFF_DS: | |
15114 | case R_PPC64_SECTOFF_LO_DS: | |
15115 | case R_PPC64_TOC16_DS: | |
15116 | case R_PPC64_TOC16_LO_DS: | |
15117 | case R_PPC64_PLTGOT16_DS: | |
15118 | case R_PPC64_PLTGOT16_LO_DS: | |
411e1bfb AM |
15119 | case R_PPC64_GOT_TPREL16_DS: |
15120 | case R_PPC64_GOT_TPREL16_LO_DS: | |
15121 | case R_PPC64_GOT_DTPREL16_DS: | |
15122 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
15123 | case R_PPC64_TPREL16_DS: | |
15124 | case R_PPC64_TPREL16_LO_DS: | |
15125 | case R_PPC64_DTPREL16_DS: | |
15126 | case R_PPC64_DTPREL16_LO_DS: | |
adadcc0c AM |
15127 | insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3)); |
15128 | mask = 3; | |
a680de9a PB |
15129 | /* If this reloc is against an lq, lxv, or stxv insn, then |
15130 | the value must be a multiple of 16. This is somewhat of | |
15131 | a hack, but the "correct" way to do this by defining _DQ | |
15132 | forms of all the _DS relocs bloats all reloc switches in | |
15133 | this file. It doesn't make much sense to use these | |
15134 | relocs in data, so testing the insn should be safe. */ | |
15135 | if ((insn & (0x3f << 26)) == (56u << 26) | |
15136 | || ((insn & (0x3f << 26)) == (61u << 26) && (insn & 3) == 1)) | |
adadcc0c | 15137 | mask = 15; |
a680de9a PB |
15138 | relocation += addend; |
15139 | addend = insn & (mask ^ 3); | |
15140 | if ((relocation & mask) != 0) | |
65f38f15 | 15141 | { |
a680de9a | 15142 | relocation ^= relocation & mask; |
25f53a85 | 15143 | info->callbacks->einfo |
695344c0 | 15144 | /* xgettext:c-format */ |
8de848d8 | 15145 | (_("%P: %H: error: %s not a multiple of %u\n"), |
25f53a85 | 15146 | input_bfd, input_section, rel->r_offset, |
b80eed39 | 15147 | howto->name, |
adadcc0c | 15148 | mask + 1); |
65f38f15 | 15149 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 15150 | ret = FALSE; |
c316a17c | 15151 | goto copy_reloc; |
65f38f15 AM |
15152 | } |
15153 | break; | |
5bd4f169 AM |
15154 | } |
15155 | ||
239e1f3a AM |
15156 | /* Dynamic relocs are not propagated for SEC_DEBUGGING sections |
15157 | because such sections are not SEC_ALLOC and thus ld.so will | |
15158 | not process them. */ | |
65f38f15 | 15159 | if (unresolved_reloc |
239e1f3a | 15160 | && !((input_section->flags & SEC_DEBUGGING) != 0 |
1d5316ab AM |
15161 | && h->elf.def_dynamic) |
15162 | && _bfd_elf_section_offset (output_bfd, info, input_section, | |
15163 | rel->r_offset) != (bfd_vma) -1) | |
9c07fe7c | 15164 | { |
25f53a85 | 15165 | info->callbacks->einfo |
695344c0 | 15166 | /* xgettext:c-format */ |
bc30df16 | 15167 | (_("%P: %H: unresolvable %s against `%T'\n"), |
25f53a85 | 15168 | input_bfd, input_section, rel->r_offset, |
b80eed39 | 15169 | howto->name, |
039b3fef | 15170 | h->elf.root.root.string); |
b34976b6 | 15171 | ret = FALSE; |
9c07fe7c | 15172 | } |
5bd4f169 | 15173 | |
b80eed39 AM |
15174 | /* 16-bit fields in insns mostly have signed values, but a |
15175 | few insns have 16-bit unsigned values. Really, we should | |
15176 | have different reloc types. */ | |
15177 | if (howto->complain_on_overflow != complain_overflow_dont | |
15178 | && howto->dst_mask == 0xffff | |
15179 | && (input_section->flags & SEC_CODE) != 0) | |
15180 | { | |
15181 | enum complain_overflow complain = complain_overflow_signed; | |
15182 | ||
15183 | insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3)); | |
a47622ac AM |
15184 | if ((insn & (0x3f << 26)) == 10u << 26 /* cmpli */) |
15185 | complain = complain_overflow_bitfield; | |
15186 | else if (howto->rightshift == 0 | |
15187 | ? ((insn & (0x3f << 26)) == 28u << 26 /* andi */ | |
15188 | || (insn & (0x3f << 26)) == 24u << 26 /* ori */ | |
15189 | || (insn & (0x3f << 26)) == 26u << 26 /* xori */) | |
15190 | : ((insn & (0x3f << 26)) == 29u << 26 /* andis */ | |
15191 | || (insn & (0x3f << 26)) == 25u << 26 /* oris */ | |
15192 | || (insn & (0x3f << 26)) == 27u << 26 /* xoris */)) | |
b80eed39 AM |
15193 | complain = complain_overflow_unsigned; |
15194 | if (howto->complain_on_overflow != complain) | |
15195 | { | |
15196 | alt_howto = *howto; | |
15197 | alt_howto.complain_on_overflow = complain; | |
15198 | howto = &alt_howto; | |
15199 | } | |
15200 | } | |
15201 | ||
a680de9a PB |
15202 | if (r_type == R_PPC64_REL16DX_HA) |
15203 | { | |
15204 | /* Split field reloc isn't handled by _bfd_final_link_relocate. */ | |
15205 | if (rel->r_offset + 4 > input_section->size) | |
15206 | r = bfd_reloc_outofrange; | |
15207 | else | |
15208 | { | |
15209 | relocation += addend; | |
15210 | relocation -= (rel->r_offset | |
15211 | + input_section->output_offset | |
15212 | + input_section->output_section->vma); | |
15213 | relocation = (bfd_signed_vma) relocation >> 16; | |
15214 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
15215 | insn &= ~0x1fffc1; | |
15216 | insn |= (relocation & 0xffc1) | ((relocation & 0x3e) << 15); | |
15217 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); | |
15218 | r = bfd_reloc_ok; | |
15219 | if (relocation + 0x8000 > 0xffff) | |
15220 | r = bfd_reloc_overflow; | |
15221 | } | |
15222 | } | |
15223 | else | |
15224 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, contents, | |
15225 | rel->r_offset, relocation, addend); | |
5bd4f169 | 15226 | |
ef60b7ff | 15227 | if (r != bfd_reloc_ok) |
5bd4f169 | 15228 | { |
bc30df16 | 15229 | char *more_info = NULL; |
b80eed39 | 15230 | const char *reloc_name = howto->name; |
bc30df16 AM |
15231 | |
15232 | if (reloc_dest != DEST_NORMAL) | |
15233 | { | |
15234 | more_info = bfd_malloc (strlen (reloc_name) + 8); | |
15235 | if (more_info != NULL) | |
15236 | { | |
15237 | strcpy (more_info, reloc_name); | |
15238 | strcat (more_info, (reloc_dest == DEST_OPD | |
15239 | ? " (OPD)" : " (stub)")); | |
15240 | reloc_name = more_info; | |
15241 | } | |
15242 | } | |
15243 | ||
cd27b276 | 15244 | if (r == bfd_reloc_overflow) |
5bd4f169 | 15245 | { |
8131c122 AM |
15246 | /* On code like "if (foo) foo();" don't report overflow |
15247 | on a branch to zero when foo is undefined. */ | |
15248 | if (!warned | |
15249 | && (reloc_dest == DEST_STUB | |
15250 | || !(h != NULL | |
15251 | && (h->elf.root.type == bfd_link_hash_undefweak | |
15252 | || h->elf.root.type == bfd_link_hash_undefined) | |
15253 | && is_branch_reloc (r_type)))) | |
1a72702b AM |
15254 | info->callbacks->reloc_overflow (info, &h->elf.root, |
15255 | sym_name, reloc_name, | |
15256 | orig_rel.r_addend, | |
15257 | input_bfd, input_section, | |
15258 | rel->r_offset); | |
ef60b7ff AM |
15259 | } |
15260 | else | |
15261 | { | |
25f53a85 | 15262 | info->callbacks->einfo |
695344c0 | 15263 | /* xgettext:c-format */ |
bc30df16 | 15264 | (_("%P: %H: %s against `%T': error %d\n"), |
25f53a85 | 15265 | input_bfd, input_section, rel->r_offset, |
bc30df16 | 15266 | reloc_name, sym_name, (int) r); |
b34976b6 | 15267 | ret = FALSE; |
ef60b7ff | 15268 | } |
bc30df16 AM |
15269 | if (more_info != NULL) |
15270 | free (more_info); | |
5bd4f169 | 15271 | } |
c316a17c AM |
15272 | copy_reloc: |
15273 | if (wrel != rel) | |
15274 | *wrel = *rel; | |
15275 | } | |
15276 | ||
15277 | if (wrel != rel) | |
15278 | { | |
15279 | Elf_Internal_Shdr *rel_hdr; | |
15280 | size_t deleted = rel - wrel; | |
15281 | ||
15282 | rel_hdr = _bfd_elf_single_rel_hdr (input_section->output_section); | |
15283 | rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted; | |
15284 | if (rel_hdr->sh_size == 0) | |
15285 | { | |
15286 | /* It is too late to remove an empty reloc section. Leave | |
15287 | one NONE reloc. | |
15288 | ??? What is wrong with an empty section??? */ | |
15289 | rel_hdr->sh_size = rel_hdr->sh_entsize; | |
15290 | deleted -= 1; | |
15291 | } | |
15292 | rel_hdr = _bfd_elf_single_rel_hdr (input_section); | |
15293 | rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted; | |
15294 | input_section->reloc_count -= deleted; | |
5bd4f169 AM |
15295 | } |
15296 | ||
645ea6a9 AM |
15297 | /* If we're emitting relocations, then shortly after this function |
15298 | returns, reloc offsets and addends for this section will be | |
15299 | adjusted. Worse, reloc symbol indices will be for the output | |
8860955f AM |
15300 | file rather than the input. Save a copy of the relocs for |
15301 | opd_entry_value. */ | |
0e1862bb | 15302 | if (is_opd && (info->emitrelocations || bfd_link_relocatable (info))) |
8860955f AM |
15303 | { |
15304 | bfd_size_type amt; | |
15305 | amt = input_section->reloc_count * sizeof (Elf_Internal_Rela); | |
15306 | rel = bfd_alloc (input_bfd, amt); | |
729eabd5 AM |
15307 | BFD_ASSERT (ppc64_elf_tdata (input_bfd)->opd.relocs == NULL); |
15308 | ppc64_elf_tdata (input_bfd)->opd.relocs = rel; | |
8860955f AM |
15309 | if (rel == NULL) |
15310 | return FALSE; | |
15311 | memcpy (rel, relocs, amt); | |
15312 | } | |
5bd4f169 AM |
15313 | return ret; |
15314 | } | |
15315 | ||
754021d0 AM |
15316 | /* Adjust the value of any local symbols in opd sections. */ |
15317 | ||
6e0b88f1 | 15318 | static int |
754021d0 AM |
15319 | ppc64_elf_output_symbol_hook (struct bfd_link_info *info, |
15320 | const char *name ATTRIBUTE_UNUSED, | |
15321 | Elf_Internal_Sym *elfsym, | |
15322 | asection *input_sec, | |
15323 | struct elf_link_hash_entry *h) | |
15324 | { | |
74f0fb50 AM |
15325 | struct _opd_sec_data *opd; |
15326 | long adjust; | |
754021d0 AM |
15327 | bfd_vma value; |
15328 | ||
4025353c | 15329 | if (h != NULL) |
6e0b88f1 | 15330 | return 1; |
4025353c | 15331 | |
74f0fb50 AM |
15332 | opd = get_opd_info (input_sec); |
15333 | if (opd == NULL || opd->adjust == NULL) | |
6e0b88f1 | 15334 | return 1; |
754021d0 AM |
15335 | |
15336 | value = elfsym->st_value - input_sec->output_offset; | |
0e1862bb | 15337 | if (!bfd_link_relocatable (info)) |
754021d0 AM |
15338 | value -= input_sec->output_section->vma; |
15339 | ||
51aecdc5 | 15340 | adjust = opd->adjust[OPD_NDX (value)]; |
4025353c | 15341 | if (adjust == -1) |
6e0b88f1 AM |
15342 | return 2; |
15343 | ||
15344 | elfsym->st_value += adjust; | |
15345 | return 1; | |
754021d0 AM |
15346 | } |
15347 | ||
5bd4f169 AM |
15348 | /* Finish up dynamic symbol handling. We set the contents of various |
15349 | dynamic sections here. */ | |
15350 | ||
b34976b6 | 15351 | static bfd_boolean |
4ce794b7 AM |
15352 | ppc64_elf_finish_dynamic_symbol (bfd *output_bfd, |
15353 | struct bfd_link_info *info, | |
15354 | struct elf_link_hash_entry *h, | |
ab6dce23 | 15355 | Elf_Internal_Sym *sym ATTRIBUTE_UNUSED) |
5bd4f169 | 15356 | { |
65f38f15 | 15357 | struct ppc_link_hash_table *htab; |
8387904d AM |
15358 | struct plt_entry *ent; |
15359 | Elf_Internal_Rela rela; | |
15360 | bfd_byte *loc; | |
5bd4f169 | 15361 | |
65f38f15 | 15362 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
15363 | if (htab == NULL) |
15364 | return FALSE; | |
5bd4f169 | 15365 | |
8387904d AM |
15366 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) |
15367 | if (ent->plt.offset != (bfd_vma) -1) | |
15368 | { | |
15369 | /* This symbol has an entry in the procedure linkage | |
15370 | table. Set it up. */ | |
e054468f AM |
15371 | if (!htab->elf.dynamic_sections_created |
15372 | || h->dynindx == -1) | |
15373 | { | |
15374 | BFD_ASSERT (h->type == STT_GNU_IFUNC | |
15375 | && h->def_regular | |
15376 | && (h->root.type == bfd_link_hash_defined | |
15377 | || h->root.type == bfd_link_hash_defweak)); | |
33e44f2e AM |
15378 | rela.r_offset = (htab->elf.iplt->output_section->vma |
15379 | + htab->elf.iplt->output_offset | |
25f23106 | 15380 | + ent->plt.offset); |
ee67d69a AM |
15381 | if (htab->opd_abi) |
15382 | rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL); | |
15383 | else | |
15384 | rela.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE); | |
e054468f AM |
15385 | rela.r_addend = (h->root.u.def.value |
15386 | + h->root.u.def.section->output_offset | |
15387 | + h->root.u.def.section->output_section->vma | |
15388 | + ent->addend); | |
33e44f2e AM |
15389 | loc = (htab->elf.irelplt->contents |
15390 | + (htab->elf.irelplt->reloc_count++ | |
25f23106 | 15391 | * sizeof (Elf64_External_Rela))); |
e054468f AM |
15392 | } |
15393 | else | |
15394 | { | |
33e44f2e AM |
15395 | rela.r_offset = (htab->elf.splt->output_section->vma |
15396 | + htab->elf.splt->output_offset | |
25f23106 | 15397 | + ent->plt.offset); |
e054468f AM |
15398 | rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT); |
15399 | rela.r_addend = ent->addend; | |
33e44f2e | 15400 | loc = (htab->elf.srelplt->contents |
b9e5796b AM |
15401 | + ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE (htab)) |
15402 | / PLT_ENTRY_SIZE (htab) * sizeof (Elf64_External_Rela))); | |
e054468f | 15403 | } |
8387904d | 15404 | bfd_elf64_swap_reloca_out (output_bfd, &rela, loc); |
a345bc8d AM |
15405 | |
15406 | if (!htab->opd_abi) | |
15407 | { | |
15408 | if (!h->def_regular) | |
15409 | { | |
15410 | /* Mark the symbol as undefined, rather than as | |
15411 | defined in glink. Leave the value if there were | |
15412 | any relocations where pointer equality matters | |
15413 | (this is a clue for the dynamic linker, to make | |
15414 | function pointer comparisons work between an | |
15415 | application and shared library), otherwise set it | |
15416 | to zero. */ | |
15417 | sym->st_shndx = SHN_UNDEF; | |
15418 | if (!h->pointer_equality_needed) | |
15419 | sym->st_value = 0; | |
15420 | else if (!h->ref_regular_nonweak) | |
15421 | { | |
15422 | /* This breaks function pointer comparisons, but | |
15423 | that is better than breaking tests for a NULL | |
15424 | function pointer. */ | |
15425 | sym->st_value = 0; | |
15426 | } | |
15427 | } | |
15428 | } | |
8387904d | 15429 | } |
5bd4f169 | 15430 | |
f5385ebf | 15431 | if (h->needs_copy) |
5bd4f169 | 15432 | { |
65f38f15 | 15433 | /* This symbol needs a copy reloc. Set it up. */ |
5bd4f169 | 15434 | |
65f38f15 AM |
15435 | if (h->dynindx == -1 |
15436 | || (h->root.type != bfd_link_hash_defined | |
15437 | && h->root.type != bfd_link_hash_defweak) | |
4ce794b7 | 15438 | || htab->relbss == NULL) |
65f38f15 | 15439 | abort (); |
5bd4f169 AM |
15440 | |
15441 | rela.r_offset = (h->root.u.def.value | |
15442 | + h->root.u.def.section->output_section->vma | |
15443 | + h->root.u.def.section->output_offset); | |
15444 | rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY); | |
15445 | rela.r_addend = 0; | |
4ce794b7 AM |
15446 | loc = htab->relbss->contents; |
15447 | loc += htab->relbss->reloc_count++ * sizeof (Elf64_External_Rela); | |
65f38f15 | 15448 | bfd_elf64_swap_reloca_out (output_bfd, &rela, loc); |
5bd4f169 AM |
15449 | } |
15450 | ||
b34976b6 | 15451 | return TRUE; |
5bd4f169 AM |
15452 | } |
15453 | ||
65f38f15 AM |
15454 | /* Used to decide how to sort relocs in an optimal manner for the |
15455 | dynamic linker, before writing them out. */ | |
15456 | ||
15457 | static enum elf_reloc_type_class | |
7e612e98 AM |
15458 | ppc64_elf_reloc_type_class (const struct bfd_link_info *info, |
15459 | const asection *rel_sec, | |
15460 | const Elf_Internal_Rela *rela) | |
65f38f15 | 15461 | { |
04c9666a | 15462 | enum elf_ppc64_reloc_type r_type; |
7e612e98 AM |
15463 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
15464 | ||
33e44f2e | 15465 | if (rel_sec == htab->elf.irelplt) |
7e612e98 | 15466 | return reloc_class_ifunc; |
a33d1f77 | 15467 | |
4ce794b7 | 15468 | r_type = ELF64_R_TYPE (rela->r_info); |
a33d1f77 | 15469 | switch (r_type) |
65f38f15 AM |
15470 | { |
15471 | case R_PPC64_RELATIVE: | |
15472 | return reloc_class_relative; | |
15473 | case R_PPC64_JMP_SLOT: | |
15474 | return reloc_class_plt; | |
15475 | case R_PPC64_COPY: | |
15476 | return reloc_class_copy; | |
15477 | default: | |
15478 | return reloc_class_normal; | |
15479 | } | |
15480 | } | |
15481 | ||
5bd4f169 AM |
15482 | /* Finish up the dynamic sections. */ |
15483 | ||
b34976b6 | 15484 | static bfd_boolean |
4ce794b7 AM |
15485 | ppc64_elf_finish_dynamic_sections (bfd *output_bfd, |
15486 | struct bfd_link_info *info) | |
5bd4f169 | 15487 | { |
65f38f15 AM |
15488 | struct ppc_link_hash_table *htab; |
15489 | bfd *dynobj; | |
5bd4f169 | 15490 | asection *sdyn; |
5bd4f169 | 15491 | |
65f38f15 | 15492 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
15493 | if (htab == NULL) |
15494 | return FALSE; | |
15495 | ||
65f38f15 | 15496 | dynobj = htab->elf.dynobj; |
3d4d4302 | 15497 | sdyn = bfd_get_linker_section (dynobj, ".dynamic"); |
5bd4f169 | 15498 | |
65f38f15 | 15499 | if (htab->elf.dynamic_sections_created) |
5bd4f169 | 15500 | { |
5bd4f169 AM |
15501 | Elf64_External_Dyn *dyncon, *dynconend; |
15502 | ||
33e44f2e | 15503 | if (sdyn == NULL || htab->elf.sgot == NULL) |
65f38f15 | 15504 | abort (); |
5bd4f169 AM |
15505 | |
15506 | dyncon = (Elf64_External_Dyn *) sdyn->contents; | |
eea6121a | 15507 | dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size); |
5bd4f169 AM |
15508 | for (; dyncon < dynconend; dyncon++) |
15509 | { | |
15510 | Elf_Internal_Dyn dyn; | |
19397422 | 15511 | asection *s; |
5bd4f169 AM |
15512 | |
15513 | bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn); | |
15514 | ||
15515 | switch (dyn.d_tag) | |
15516 | { | |
65f38f15 AM |
15517 | default: |
15518 | continue; | |
5bd4f169 | 15519 | |
5d1634d7 | 15520 | case DT_PPC64_GLINK: |
4ce794b7 | 15521 | s = htab->glink; |
6348e046 | 15522 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
ad8e1ba5 AM |
15523 | /* We stupidly defined DT_PPC64_GLINK to be the start |
15524 | of glink rather than the first entry point, which is | |
15525 | what ld.so needs, and now have a bigger stub to | |
15526 | support automatic multiple TOCs. */ | |
b9e5796b | 15527 | dyn.d_un.d_ptr += GLINK_CALL_STUB_SIZE - 8 * 4; |
5d1634d7 AM |
15528 | break; |
15529 | ||
19397422 AM |
15530 | case DT_PPC64_OPD: |
15531 | s = bfd_get_section_by_name (output_bfd, ".opd"); | |
6348e046 AM |
15532 | if (s == NULL) |
15533 | continue; | |
15534 | dyn.d_un.d_ptr = s->vma; | |
19397422 AM |
15535 | break; |
15536 | ||
e8910a83 AM |
15537 | case DT_PPC64_OPT: |
15538 | if (htab->do_multi_toc && htab->multi_toc_needed) | |
15539 | dyn.d_un.d_val |= PPC64_OPT_MULTI_TOC; | |
15540 | break; | |
15541 | ||
19397422 AM |
15542 | case DT_PPC64_OPDSZ: |
15543 | s = bfd_get_section_by_name (output_bfd, ".opd"); | |
6348e046 AM |
15544 | if (s == NULL) |
15545 | continue; | |
eea6121a | 15546 | dyn.d_un.d_val = s->size; |
19397422 AM |
15547 | break; |
15548 | ||
65f38f15 | 15549 | case DT_PLTGOT: |
33e44f2e | 15550 | s = htab->elf.splt; |
6348e046 | 15551 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
65f38f15 AM |
15552 | break; |
15553 | ||
15554 | case DT_JMPREL: | |
33e44f2e | 15555 | s = htab->elf.srelplt; |
6348e046 | 15556 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
65f38f15 | 15557 | break; |
5bd4f169 | 15558 | |
65f38f15 | 15559 | case DT_PLTRELSZ: |
33e44f2e | 15560 | dyn.d_un.d_val = htab->elf.srelplt->size; |
5d1634d7 | 15561 | break; |
5bd4f169 | 15562 | } |
5bd4f169 | 15563 | |
65f38f15 | 15564 | bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); |
5bd4f169 | 15565 | } |
5bd4f169 AM |
15566 | } |
15567 | ||
33e44f2e | 15568 | if (htab->elf.sgot != NULL && htab->elf.sgot->size != 0) |
5d1634d7 AM |
15569 | { |
15570 | /* Fill in the first entry in the global offset table. | |
15571 | We use it to hold the link-time TOCbase. */ | |
15572 | bfd_put_64 (output_bfd, | |
60ee0d4a | 15573 | elf_gp (output_bfd) + TOC_BASE_OFF, |
33e44f2e | 15574 | htab->elf.sgot->contents); |
5d1634d7 AM |
15575 | |
15576 | /* Set .got entry size. */ | |
33e44f2e | 15577 | elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize = 8; |
5d1634d7 AM |
15578 | } |
15579 | ||
33e44f2e | 15580 | if (htab->elf.splt != NULL && htab->elf.splt->size != 0) |
5d1634d7 AM |
15581 | { |
15582 | /* Set .plt entry size. */ | |
33e44f2e | 15583 | elf_section_data (htab->elf.splt->output_section)->this_hdr.sh_entsize |
b9e5796b | 15584 | = PLT_ENTRY_SIZE (htab); |
5d1634d7 AM |
15585 | } |
15586 | ||
84f5d08e AM |
15587 | /* brlt is SEC_LINKER_CREATED, so we need to write out relocs for |
15588 | brlt ourselves if emitrelocations. */ | |
15589 | if (htab->brlt != NULL | |
15590 | && htab->brlt->reloc_count != 0 | |
15591 | && !_bfd_elf_link_output_relocs (output_bfd, | |
15592 | htab->brlt, | |
d4730f92 | 15593 | elf_section_data (htab->brlt)->rela.hdr, |
84f5d08e AM |
15594 | elf_section_data (htab->brlt)->relocs, |
15595 | NULL)) | |
15596 | return FALSE; | |
15597 | ||
176a0d42 AM |
15598 | if (htab->glink != NULL |
15599 | && htab->glink->reloc_count != 0 | |
15600 | && !_bfd_elf_link_output_relocs (output_bfd, | |
15601 | htab->glink, | |
d4730f92 | 15602 | elf_section_data (htab->glink)->rela.hdr, |
176a0d42 AM |
15603 | elf_section_data (htab->glink)->relocs, |
15604 | NULL)) | |
15605 | return FALSE; | |
15606 | ||
58d180e8 | 15607 | if (htab->glink_eh_frame != NULL |
da44f4e5 AM |
15608 | && htab->glink_eh_frame->size != 0) |
15609 | { | |
15610 | bfd_vma val; | |
15611 | bfd_byte *p; | |
15612 | asection *stub_sec; | |
15613 | ||
15614 | p = htab->glink_eh_frame->contents + sizeof (glink_eh_frame_cie); | |
15615 | for (stub_sec = htab->params->stub_bfd->sections; | |
15616 | stub_sec != NULL; | |
15617 | stub_sec = stub_sec->next) | |
15618 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) | |
15619 | { | |
15620 | /* FDE length. */ | |
15621 | p += 4; | |
15622 | /* CIE pointer. */ | |
15623 | p += 4; | |
15624 | /* Offset to stub section. */ | |
15625 | val = (stub_sec->output_section->vma | |
15626 | + stub_sec->output_offset); | |
15627 | val -= (htab->glink_eh_frame->output_section->vma | |
15628 | + htab->glink_eh_frame->output_offset | |
15629 | + (p - htab->glink_eh_frame->contents)); | |
15630 | if (val + 0x80000000 > 0xffffffff) | |
15631 | { | |
15632 | info->callbacks->einfo | |
15633 | (_("%P: %s offset too large for .eh_frame sdata4 encoding"), | |
15634 | stub_sec->name); | |
15635 | return FALSE; | |
15636 | } | |
15637 | bfd_put_32 (dynobj, val, p); | |
15638 | p += 4; | |
15639 | /* stub section size. */ | |
15640 | p += 4; | |
15641 | /* Augmentation. */ | |
15642 | p += 1; | |
15643 | /* Pad. */ | |
15644 | p += 7; | |
15645 | } | |
15646 | if (htab->glink != NULL && htab->glink->size != 0) | |
15647 | { | |
15648 | /* FDE length. */ | |
15649 | p += 4; | |
15650 | /* CIE pointer. */ | |
15651 | p += 4; | |
15652 | /* Offset to .glink. */ | |
15653 | val = (htab->glink->output_section->vma | |
15654 | + htab->glink->output_offset | |
15655 | + 8); | |
15656 | val -= (htab->glink_eh_frame->output_section->vma | |
15657 | + htab->glink_eh_frame->output_offset | |
15658 | + (p - htab->glink_eh_frame->contents)); | |
15659 | if (val + 0x80000000 > 0xffffffff) | |
15660 | { | |
15661 | info->callbacks->einfo | |
15662 | (_("%P: %s offset too large for .eh_frame sdata4 encoding"), | |
15663 | htab->glink->name); | |
15664 | return FALSE; | |
15665 | } | |
15666 | bfd_put_32 (dynobj, val, p); | |
15667 | p += 4; | |
15668 | /* .glink size. */ | |
15669 | p += 4; | |
15670 | /* Augmentation. */ | |
15671 | p += 1; | |
15672 | /* Ops. */ | |
15673 | p += 7; | |
15674 | } | |
15675 | ||
15676 | if (htab->glink_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME | |
15677 | && !_bfd_elf_write_section_eh_frame (output_bfd, info, | |
15678 | htab->glink_eh_frame, | |
15679 | htab->glink_eh_frame->contents)) | |
15680 | return FALSE; | |
15681 | } | |
58d180e8 | 15682 | |
e717da7e | 15683 | /* We need to handle writing out multiple GOT sections ourselves, |
7b53ace3 AM |
15684 | since we didn't add them to DYNOBJ. We know dynobj is the first |
15685 | bfd. */ | |
c72f2fb2 | 15686 | while ((dynobj = dynobj->link.next) != NULL) |
e717da7e AM |
15687 | { |
15688 | asection *s; | |
7b53ace3 | 15689 | |
0c8d6e5c | 15690 | if (!is_ppc64_elf (dynobj)) |
7b53ace3 AM |
15691 | continue; |
15692 | ||
e717da7e AM |
15693 | s = ppc64_elf_tdata (dynobj)->got; |
15694 | if (s != NULL | |
eea6121a | 15695 | && s->size != 0 |
e717da7e AM |
15696 | && s->output_section != bfd_abs_section_ptr |
15697 | && !bfd_set_section_contents (output_bfd, s->output_section, | |
15698 | s->contents, s->output_offset, | |
eea6121a | 15699 | s->size)) |
e717da7e AM |
15700 | return FALSE; |
15701 | s = ppc64_elf_tdata (dynobj)->relgot; | |
15702 | if (s != NULL | |
eea6121a | 15703 | && s->size != 0 |
e717da7e AM |
15704 | && s->output_section != bfd_abs_section_ptr |
15705 | && !bfd_set_section_contents (output_bfd, s->output_section, | |
15706 | s->contents, s->output_offset, | |
eea6121a | 15707 | s->size)) |
e717da7e AM |
15708 | return FALSE; |
15709 | } | |
f6c52c13 | 15710 | |
b34976b6 | 15711 | return TRUE; |
5bd4f169 AM |
15712 | } |
15713 | ||
5bd4f169 | 15714 | #include "elf64-target.h" |
7b8e7dad AM |
15715 | |
15716 | /* FreeBSD support */ | |
15717 | ||
15718 | #undef TARGET_LITTLE_SYM | |
15719 | #undef TARGET_LITTLE_NAME | |
15720 | ||
15721 | #undef TARGET_BIG_SYM | |
6d00b590 | 15722 | #define TARGET_BIG_SYM powerpc_elf64_fbsd_vec |
7b8e7dad AM |
15723 | #undef TARGET_BIG_NAME |
15724 | #define TARGET_BIG_NAME "elf64-powerpc-freebsd" | |
15725 | ||
15726 | #undef ELF_OSABI | |
15727 | #define ELF_OSABI ELFOSABI_FREEBSD | |
15728 | ||
15729 | #undef elf64_bed | |
15730 | #define elf64_bed elf64_powerpc_fbsd_bed | |
15731 | ||
15732 | #include "elf64-target.h" | |
15733 |