Commit | Line | Data |
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5bd4f169 | 1 | /* PowerPC64-specific support for 64-bit ELF. |
b90efa5b | 2 | Copyright (C) 1999-2015 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 | |
6bfdb61b | 78 | #define elf_backend_default_execstack 0 |
ad8e1ba5 | 79 | |
e717da7e | 80 | #define bfd_elf64_mkobject ppc64_elf_mkobject |
ad8e1ba5 | 81 | #define bfd_elf64_bfd_reloc_type_lookup ppc64_elf_reloc_type_lookup |
aa374f67 | 82 | #define bfd_elf64_bfd_reloc_name_lookup ppc64_elf_reloc_name_lookup |
ee67d69a AM |
83 | #define bfd_elf64_bfd_merge_private_bfd_data ppc64_elf_merge_private_bfd_data |
84 | #define bfd_elf64_bfd_print_private_bfd_data ppc64_elf_print_private_bfd_data | |
ad8e1ba5 AM |
85 | #define bfd_elf64_new_section_hook ppc64_elf_new_section_hook |
86 | #define bfd_elf64_bfd_link_hash_table_create ppc64_elf_link_hash_table_create | |
90e3cdf2 | 87 | #define bfd_elf64_get_synthetic_symtab ppc64_elf_get_synthetic_symtab |
aa374f67 | 88 | #define bfd_elf64_bfd_link_just_syms ppc64_elf_link_just_syms |
ad8e1ba5 AM |
89 | |
90 | #define elf_backend_object_p ppc64_elf_object_p | |
d37c89e5 AM |
91 | #define elf_backend_grok_prstatus ppc64_elf_grok_prstatus |
92 | #define elf_backend_grok_psinfo ppc64_elf_grok_psinfo | |
183e98be | 93 | #define elf_backend_write_core_note ppc64_elf_write_core_note |
ad8e1ba5 AM |
94 | #define elf_backend_create_dynamic_sections ppc64_elf_create_dynamic_sections |
95 | #define elf_backend_copy_indirect_symbol ppc64_elf_copy_indirect_symbol | |
555cd476 | 96 | #define elf_backend_add_symbol_hook ppc64_elf_add_symbol_hook |
f6c7c3e8 | 97 | #define elf_backend_check_directives ppc64_elf_before_check_relocs |
e5034e59 | 98 | #define elf_backend_notice_as_needed ppc64_elf_notice_as_needed |
8387904d | 99 | #define elf_backend_archive_symbol_lookup ppc64_elf_archive_symbol_lookup |
ad8e1ba5 | 100 | #define elf_backend_check_relocs ppc64_elf_check_relocs |
74f0fb50 | 101 | #define elf_backend_gc_keep ppc64_elf_gc_keep |
64d03ab5 | 102 | #define elf_backend_gc_mark_dynamic_ref ppc64_elf_gc_mark_dynamic_ref |
ad8e1ba5 AM |
103 | #define elf_backend_gc_mark_hook ppc64_elf_gc_mark_hook |
104 | #define elf_backend_gc_sweep_hook ppc64_elf_gc_sweep_hook | |
105 | #define elf_backend_adjust_dynamic_symbol ppc64_elf_adjust_dynamic_symbol | |
106 | #define elf_backend_hide_symbol ppc64_elf_hide_symbol | |
9f296da3 | 107 | #define elf_backend_maybe_function_sym ppc64_elf_maybe_function_sym |
ad8e1ba5 AM |
108 | #define elf_backend_always_size_sections ppc64_elf_func_desc_adjust |
109 | #define elf_backend_size_dynamic_sections ppc64_elf_size_dynamic_sections | |
a345bc8d | 110 | #define elf_backend_hash_symbol ppc64_elf_hash_symbol |
74541ad4 | 111 | #define elf_backend_init_index_section _bfd_elf_init_2_index_sections |
60124e18 | 112 | #define elf_backend_action_discarded ppc64_elf_action_discarded |
ad8e1ba5 AM |
113 | #define elf_backend_relocate_section ppc64_elf_relocate_section |
114 | #define elf_backend_finish_dynamic_symbol ppc64_elf_finish_dynamic_symbol | |
115 | #define elf_backend_reloc_type_class ppc64_elf_reloc_type_class | |
116 | #define elf_backend_finish_dynamic_sections ppc64_elf_finish_dynamic_sections | |
754021d0 | 117 | #define elf_backend_link_output_symbol_hook ppc64_elf_output_symbol_hook |
29ef7005 | 118 | #define elf_backend_special_sections ppc64_elf_special_sections |
6911b7dc | 119 | #define elf_backend_merge_symbol_attribute ppc64_elf_merge_symbol_attribute |
ad8e1ba5 | 120 | |
5bd4f169 AM |
121 | /* The name of the dynamic interpreter. This is put in the .interp |
122 | section. */ | |
123 | #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1" | |
124 | ||
125 | /* The size in bytes of an entry in the procedure linkage table. */ | |
b9e5796b | 126 | #define PLT_ENTRY_SIZE(htab) (htab->opd_abi ? 24 : 8) |
5bd4f169 AM |
127 | |
128 | /* The initial size of the plt reserved for the dynamic linker. */ | |
b9e5796b | 129 | #define PLT_INITIAL_ENTRY_SIZE(htab) (htab->opd_abi ? 24 : 16) |
5bd4f169 | 130 | |
a078d95a AM |
131 | /* Offsets to some stack save slots. */ |
132 | #define STK_LR 16 | |
133 | #define STK_TOC(htab) (htab->opd_abi ? 40 : 24) | |
eb8d7fda | 134 | /* This one is dodgy. ELFv2 does not have a linker word, so use the |
a078d95a AM |
135 | CR save slot. Used only by optimised __tls_get_addr call stub, |
136 | relying on __tls_get_addr_opt not saving CR.. */ | |
137 | #define STK_LINKER(htab) (htab->opd_abi ? 32 : 8) | |
138 | ||
5bd4f169 | 139 | /* TOC base pointers offset from start of TOC. */ |
411e1bfb AM |
140 | #define TOC_BASE_OFF 0x8000 |
141 | ||
142 | /* Offset of tp and dtp pointers from start of TLS block. */ | |
143 | #define TP_OFFSET 0x7000 | |
144 | #define DTP_OFFSET 0x8000 | |
5bd4f169 | 145 | |
ad8e1ba5 AM |
146 | /* .plt call stub instructions. The normal stub is like this, but |
147 | sometimes the .plt entry crosses a 64k boundary and we need to | |
71a39c98 | 148 | insert an addi to adjust r11. */ |
a078d95a | 149 | #define STD_R2_0R1 0xf8410000 /* std %r2,0+40(%r1) */ |
71a39c98 AM |
150 | #define ADDIS_R11_R2 0x3d620000 /* addis %r11,%r2,xxx@ha */ |
151 | #define LD_R12_0R11 0xe98b0000 /* ld %r12,xxx+0@l(%r11) */ | |
152 | #define MTCTR_R12 0x7d8903a6 /* mtctr %r12 */ | |
153 | #define LD_R2_0R11 0xe84b0000 /* ld %r2,xxx+8@l(%r11) */ | |
154 | #define LD_R11_0R11 0xe96b0000 /* ld %r11,xxx+16@l(%r11) */ | |
5d1634d7 AM |
155 | #define BCTR 0x4e800420 /* bctr */ |
156 | ||
71a39c98 | 157 | #define ADDI_R11_R11 0x396b0000 /* addi %r11,%r11,off@l */ |
ad8e1ba5 AM |
158 | #define ADDIS_R2_R2 0x3c420000 /* addis %r2,%r2,off@ha */ |
159 | #define ADDI_R2_R2 0x38420000 /* addi %r2,%r2,off@l */ | |
160 | ||
71a39c98 AM |
161 | #define XOR_R2_R12_R12 0x7d826278 /* xor %r2,%r12,%r12 */ |
162 | #define ADD_R11_R11_R2 0x7d6b1214 /* add %r11,%r11,%r2 */ | |
163 | #define XOR_R11_R12_R12 0x7d8b6278 /* xor %r11,%r12,%r12 */ | |
794e51c0 AM |
164 | #define ADD_R2_R2_R11 0x7c425a14 /* add %r2,%r2,%r11 */ |
165 | #define CMPLDI_R2_0 0x28220000 /* cmpldi %r2,0 */ | |
166 | #define BNECTR 0x4ca20420 /* bnectr+ */ | |
167 | #define BNECTR_P4 0x4ce20420 /* bnectr+ */ | |
168 | ||
71a39c98 | 169 | #define LD_R12_0R2 0xe9820000 /* ld %r12,xxx+0(%r2) */ |
ac2df442 AM |
170 | #define LD_R11_0R2 0xe9620000 /* ld %r11,xxx+0(%r2) */ |
171 | #define LD_R2_0R2 0xe8420000 /* ld %r2,xxx+0(%r2) */ | |
172 | ||
a078d95a | 173 | #define LD_R2_0R1 0xe8410000 /* ld %r2,0(%r1) */ |
ad8e1ba5 | 174 | |
397998fc | 175 | #define ADDIS_R12_R2 0x3d820000 /* addis %r12,%r2,xxx@ha */ |
a345bc8d AM |
176 | #define ADDIS_R12_R12 0x3d8c0000 /* addis %r12,%r12,xxx@ha */ |
177 | #define LD_R12_0R12 0xe98c0000 /* ld %r12,xxx@l(%r12) */ | |
178 | ||
ee4bf8d2 | 179 | /* glink call stub instructions. We enter with the index in R0. */ |
ad8e1ba5 | 180 | #define GLINK_CALL_STUB_SIZE (16*4) |
ee4bf8d2 AM |
181 | /* 0: */ |
182 | /* .quad plt0-1f */ | |
183 | /* __glink: */ | |
184 | #define MFLR_R12 0x7d8802a6 /* mflr %12 */ | |
185 | #define BCL_20_31 0x429f0005 /* bcl 20,31,1f */ | |
186 | /* 1: */ | |
187 | #define MFLR_R11 0x7d6802a6 /* mflr %11 */ | |
71a39c98 | 188 | /* ld %2,(0b-1b)(%11) */ |
ee4bf8d2 | 189 | #define MTLR_R12 0x7d8803a6 /* mtlr %12 */ |
71a39c98 AM |
190 | #define ADD_R11_R2_R11 0x7d625a14 /* add %11,%2,%11 */ |
191 | /* ld %12,0(%11) */ | |
192 | /* ld %2,8(%11) */ | |
193 | /* mtctr %12 */ | |
194 | /* ld %11,16(%11) */ | |
ee4bf8d2 | 195 | /* bctr */ |
b9e5796b AM |
196 | #define MFLR_R0 0x7c0802a6 /* mflr %r0 */ |
197 | #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */ | |
198 | #define SUB_R12_R12_R11 0x7d8b6050 /* subf %r12,%r11,%r12 */ | |
199 | #define ADDI_R0_R12 0x380c0000 /* addi %r0,%r12,0 */ | |
200 | #define SRDI_R0_R0_2 0x7800f082 /* rldicl %r0,%r0,62,2 */ | |
5d1634d7 AM |
201 | |
202 | /* Pad with this. */ | |
203 | #define NOP 0x60000000 | |
204 | ||
721956f4 AM |
205 | /* Some other nops. */ |
206 | #define CROR_151515 0x4def7b82 | |
207 | #define CROR_313131 0x4ffffb82 | |
208 | ||
cedb70c5 | 209 | /* .glink entries for the first 32k functions are two instructions. */ |
5d1634d7 AM |
210 | #define LI_R0_0 0x38000000 /* li %r0,0 */ |
211 | #define B_DOT 0x48000000 /* b . */ | |
212 | ||
213 | /* After that, we need two instructions to load the index, followed by | |
214 | a branch. */ | |
215 | #define LIS_R0_0 0x3c000000 /* lis %r0,0 */ | |
10ed1bba | 216 | #define ORI_R0_R0_0 0x60000000 /* ori %r0,%r0,0 */ |
41bd81ab | 217 | |
deb0e272 AM |
218 | /* Instructions used by the save and restore reg functions. */ |
219 | #define STD_R0_0R1 0xf8010000 /* std %r0,0(%r1) */ | |
220 | #define STD_R0_0R12 0xf80c0000 /* std %r0,0(%r12) */ | |
221 | #define LD_R0_0R1 0xe8010000 /* ld %r0,0(%r1) */ | |
222 | #define LD_R0_0R12 0xe80c0000 /* ld %r0,0(%r12) */ | |
82bd7b59 AM |
223 | #define STFD_FR0_0R1 0xd8010000 /* stfd %fr0,0(%r1) */ |
224 | #define LFD_FR0_0R1 0xc8010000 /* lfd %fr0,0(%r1) */ | |
deb0e272 AM |
225 | #define LI_R12_0 0x39800000 /* li %r12,0 */ |
226 | #define STVX_VR0_R12_R0 0x7c0c01ce /* stvx %v0,%r12,%r0 */ | |
227 | #define LVX_VR0_R12_R0 0x7c0c00ce /* lvx %v0,%r12,%r0 */ | |
228 | #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */ | |
82bd7b59 AM |
229 | #define BLR 0x4e800020 /* blr */ |
230 | ||
41bd81ab AM |
231 | /* Since .opd is an array of descriptors and each entry will end up |
232 | with identical R_PPC64_RELATIVE relocs, there is really no need to | |
233 | propagate .opd relocs; The dynamic linker should be taught to | |
1e2f5b6e | 234 | relocate .opd without reloc entries. */ |
41bd81ab AM |
235 | #ifndef NO_OPD_RELOCS |
236 | #define NO_OPD_RELOCS 0 | |
237 | #endif | |
810d4e75 AM |
238 | |
239 | static inline int | |
240 | abiversion (bfd *abfd) | |
241 | { | |
242 | return elf_elfheader (abfd)->e_flags & EF_PPC64_ABI; | |
243 | } | |
244 | ||
245 | static inline void | |
246 | set_abiversion (bfd *abfd, int ver) | |
247 | { | |
248 | elf_elfheader (abfd)->e_flags &= ~EF_PPC64_ABI; | |
249 | elf_elfheader (abfd)->e_flags |= ver & EF_PPC64_ABI; | |
250 | } | |
5bd4f169 | 251 | \f |
f5e87a1d | 252 | #define ONES(n) (((bfd_vma) 1 << ((n) - 1) << 1) - 1) |
b34976b6 | 253 | |
5bd4f169 | 254 | /* Relocation HOWTO's. */ |
04c9666a | 255 | static reloc_howto_type *ppc64_elf_howto_table[(int) R_PPC64_max]; |
5bd4f169 AM |
256 | |
257 | static reloc_howto_type ppc64_elf_howto_raw[] = { | |
258 | /* This reloc does nothing. */ | |
259 | HOWTO (R_PPC64_NONE, /* type */ | |
260 | 0, /* rightshift */ | |
6346d5ca AM |
261 | 3, /* size (0 = byte, 1 = short, 2 = long) */ |
262 | 0, /* bitsize */ | |
b34976b6 | 263 | FALSE, /* pc_relative */ |
5bd4f169 | 264 | 0, /* bitpos */ |
f5e87a1d | 265 | complain_overflow_dont, /* complain_on_overflow */ |
5bd4f169 AM |
266 | bfd_elf_generic_reloc, /* special_function */ |
267 | "R_PPC64_NONE", /* name */ | |
b34976b6 | 268 | FALSE, /* partial_inplace */ |
d006db6c | 269 | 0, /* src_mask */ |
5bd4f169 | 270 | 0, /* dst_mask */ |
b34976b6 | 271 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
272 | |
273 | /* A standard 32 bit relocation. */ | |
274 | HOWTO (R_PPC64_ADDR32, /* type */ | |
275 | 0, /* rightshift */ | |
276 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
277 | 32, /* bitsize */ | |
b34976b6 | 278 | FALSE, /* pc_relative */ |
5bd4f169 AM |
279 | 0, /* bitpos */ |
280 | complain_overflow_bitfield, /* complain_on_overflow */ | |
281 | bfd_elf_generic_reloc, /* special_function */ | |
282 | "R_PPC64_ADDR32", /* name */ | |
b34976b6 | 283 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
284 | 0, /* src_mask */ |
285 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 286 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
287 | |
288 | /* An absolute 26 bit branch; the lower two bits must be zero. | |
289 | FIXME: we don't check that, we just clear them. */ | |
290 | HOWTO (R_PPC64_ADDR24, /* type */ | |
291 | 0, /* rightshift */ | |
292 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
293 | 26, /* bitsize */ | |
b34976b6 | 294 | FALSE, /* pc_relative */ |
5bd4f169 AM |
295 | 0, /* bitpos */ |
296 | complain_overflow_bitfield, /* complain_on_overflow */ | |
297 | bfd_elf_generic_reloc, /* special_function */ | |
298 | "R_PPC64_ADDR24", /* name */ | |
b34976b6 | 299 | FALSE, /* partial_inplace */ |
d006db6c | 300 | 0, /* src_mask */ |
f5e87a1d | 301 | 0x03fffffc, /* dst_mask */ |
b34976b6 | 302 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
303 | |
304 | /* A standard 16 bit relocation. */ | |
305 | HOWTO (R_PPC64_ADDR16, /* type */ | |
306 | 0, /* rightshift */ | |
307 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
308 | 16, /* bitsize */ | |
b34976b6 | 309 | FALSE, /* pc_relative */ |
5bd4f169 AM |
310 | 0, /* bitpos */ |
311 | complain_overflow_bitfield, /* complain_on_overflow */ | |
312 | bfd_elf_generic_reloc, /* special_function */ | |
313 | "R_PPC64_ADDR16", /* name */ | |
b34976b6 | 314 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
315 | 0, /* src_mask */ |
316 | 0xffff, /* dst_mask */ | |
b34976b6 | 317 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
318 | |
319 | /* A 16 bit relocation without overflow. */ | |
320 | HOWTO (R_PPC64_ADDR16_LO, /* type */ | |
321 | 0, /* rightshift */ | |
322 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
323 | 16, /* bitsize */ | |
b34976b6 | 324 | FALSE, /* pc_relative */ |
5bd4f169 AM |
325 | 0, /* bitpos */ |
326 | complain_overflow_dont,/* complain_on_overflow */ | |
327 | bfd_elf_generic_reloc, /* special_function */ | |
328 | "R_PPC64_ADDR16_LO", /* name */ | |
b34976b6 | 329 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
330 | 0, /* src_mask */ |
331 | 0xffff, /* dst_mask */ | |
b34976b6 | 332 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
333 | |
334 | /* Bits 16-31 of an address. */ | |
335 | HOWTO (R_PPC64_ADDR16_HI, /* type */ | |
336 | 16, /* rightshift */ | |
337 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
338 | 16, /* bitsize */ | |
b34976b6 | 339 | FALSE, /* pc_relative */ |
5bd4f169 | 340 | 0, /* bitpos */ |
f9c6b907 | 341 | complain_overflow_signed, /* complain_on_overflow */ |
5bd4f169 AM |
342 | bfd_elf_generic_reloc, /* special_function */ |
343 | "R_PPC64_ADDR16_HI", /* name */ | |
b34976b6 | 344 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
345 | 0, /* src_mask */ |
346 | 0xffff, /* dst_mask */ | |
b34976b6 | 347 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
348 | |
349 | /* Bits 16-31 of an address, plus 1 if the contents of the low 16 | |
350 | bits, treated as a signed number, is negative. */ | |
351 | HOWTO (R_PPC64_ADDR16_HA, /* type */ | |
352 | 16, /* rightshift */ | |
353 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
354 | 16, /* bitsize */ | |
b34976b6 | 355 | FALSE, /* pc_relative */ |
5bd4f169 | 356 | 0, /* bitpos */ |
f9c6b907 | 357 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 358 | ppc64_elf_ha_reloc, /* special_function */ |
5bd4f169 | 359 | "R_PPC64_ADDR16_HA", /* name */ |
b34976b6 | 360 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
361 | 0, /* src_mask */ |
362 | 0xffff, /* dst_mask */ | |
b34976b6 | 363 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
364 | |
365 | /* An absolute 16 bit branch; the lower two bits must be zero. | |
366 | FIXME: we don't check that, we just clear them. */ | |
367 | HOWTO (R_PPC64_ADDR14, /* type */ | |
368 | 0, /* rightshift */ | |
369 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
370 | 16, /* bitsize */ | |
b34976b6 | 371 | FALSE, /* pc_relative */ |
5bd4f169 | 372 | 0, /* bitpos */ |
b80eed39 | 373 | complain_overflow_signed, /* complain_on_overflow */ |
2441e016 | 374 | ppc64_elf_branch_reloc, /* special_function */ |
5bd4f169 | 375 | "R_PPC64_ADDR14", /* name */ |
b34976b6 | 376 | FALSE, /* partial_inplace */ |
d006db6c | 377 | 0, /* src_mask */ |
f5e87a1d | 378 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 379 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
380 | |
381 | /* An absolute 16 bit branch, for which bit 10 should be set to | |
382 | indicate that the branch is expected to be taken. The lower two | |
383 | bits must be zero. */ | |
384 | HOWTO (R_PPC64_ADDR14_BRTAKEN, /* type */ | |
385 | 0, /* rightshift */ | |
386 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
387 | 16, /* bitsize */ | |
b34976b6 | 388 | FALSE, /* pc_relative */ |
5bd4f169 | 389 | 0, /* bitpos */ |
b80eed39 | 390 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 391 | ppc64_elf_brtaken_reloc, /* special_function */ |
5bd4f169 | 392 | "R_PPC64_ADDR14_BRTAKEN",/* name */ |
b34976b6 | 393 | FALSE, /* partial_inplace */ |
d006db6c | 394 | 0, /* src_mask */ |
f5e87a1d | 395 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 396 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
397 | |
398 | /* An absolute 16 bit branch, for which bit 10 should be set to | |
399 | indicate that the branch is not expected to be taken. The lower | |
400 | two bits must be zero. */ | |
401 | HOWTO (R_PPC64_ADDR14_BRNTAKEN, /* type */ | |
402 | 0, /* rightshift */ | |
403 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
404 | 16, /* bitsize */ | |
b34976b6 | 405 | FALSE, /* pc_relative */ |
5bd4f169 | 406 | 0, /* bitpos */ |
b80eed39 | 407 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 408 | ppc64_elf_brtaken_reloc, /* special_function */ |
5bd4f169 | 409 | "R_PPC64_ADDR14_BRNTAKEN",/* name */ |
b34976b6 | 410 | FALSE, /* partial_inplace */ |
d006db6c | 411 | 0, /* src_mask */ |
f5e87a1d | 412 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 413 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
414 | |
415 | /* A relative 26 bit branch; the lower two bits must be zero. */ | |
416 | HOWTO (R_PPC64_REL24, /* type */ | |
417 | 0, /* rightshift */ | |
418 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
419 | 26, /* bitsize */ | |
b34976b6 | 420 | TRUE, /* pc_relative */ |
5bd4f169 AM |
421 | 0, /* bitpos */ |
422 | complain_overflow_signed, /* complain_on_overflow */ | |
2441e016 | 423 | ppc64_elf_branch_reloc, /* special_function */ |
5bd4f169 | 424 | "R_PPC64_REL24", /* name */ |
b34976b6 | 425 | FALSE, /* partial_inplace */ |
d006db6c | 426 | 0, /* src_mask */ |
f5e87a1d | 427 | 0x03fffffc, /* dst_mask */ |
b34976b6 | 428 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
429 | |
430 | /* A relative 16 bit branch; the lower two bits must be zero. */ | |
431 | HOWTO (R_PPC64_REL14, /* type */ | |
432 | 0, /* rightshift */ | |
433 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
434 | 16, /* bitsize */ | |
b34976b6 | 435 | TRUE, /* pc_relative */ |
5bd4f169 AM |
436 | 0, /* bitpos */ |
437 | complain_overflow_signed, /* complain_on_overflow */ | |
2441e016 | 438 | ppc64_elf_branch_reloc, /* special_function */ |
5bd4f169 | 439 | "R_PPC64_REL14", /* name */ |
b34976b6 | 440 | FALSE, /* partial_inplace */ |
d006db6c | 441 | 0, /* src_mask */ |
f5e87a1d | 442 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 443 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
444 | |
445 | /* A relative 16 bit branch. Bit 10 should be set to indicate that | |
446 | the branch is expected to be taken. The lower two bits must be | |
447 | zero. */ | |
448 | HOWTO (R_PPC64_REL14_BRTAKEN, /* type */ | |
449 | 0, /* rightshift */ | |
450 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
451 | 16, /* bitsize */ | |
b34976b6 | 452 | TRUE, /* pc_relative */ |
5bd4f169 AM |
453 | 0, /* bitpos */ |
454 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 455 | ppc64_elf_brtaken_reloc, /* special_function */ |
5bd4f169 | 456 | "R_PPC64_REL14_BRTAKEN", /* name */ |
b34976b6 | 457 | FALSE, /* partial_inplace */ |
d006db6c | 458 | 0, /* src_mask */ |
f5e87a1d | 459 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 460 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
461 | |
462 | /* A relative 16 bit branch. Bit 10 should be set to indicate that | |
463 | the branch is not expected to be taken. The lower two bits must | |
464 | be zero. */ | |
465 | HOWTO (R_PPC64_REL14_BRNTAKEN, /* type */ | |
466 | 0, /* rightshift */ | |
467 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
468 | 16, /* bitsize */ | |
b34976b6 | 469 | TRUE, /* pc_relative */ |
5bd4f169 AM |
470 | 0, /* bitpos */ |
471 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 472 | ppc64_elf_brtaken_reloc, /* special_function */ |
5bd4f169 | 473 | "R_PPC64_REL14_BRNTAKEN",/* name */ |
b34976b6 | 474 | FALSE, /* partial_inplace */ |
d006db6c | 475 | 0, /* src_mask */ |
f5e87a1d | 476 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 477 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
478 | |
479 | /* Like R_PPC64_ADDR16, but referring to the GOT table entry for the | |
480 | symbol. */ | |
481 | HOWTO (R_PPC64_GOT16, /* type */ | |
482 | 0, /* rightshift */ | |
483 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
484 | 16, /* bitsize */ | |
b34976b6 | 485 | FALSE, /* pc_relative */ |
5bd4f169 AM |
486 | 0, /* bitpos */ |
487 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 488 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 489 | "R_PPC64_GOT16", /* name */ |
b34976b6 | 490 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
491 | 0, /* src_mask */ |
492 | 0xffff, /* dst_mask */ | |
b34976b6 | 493 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
494 | |
495 | /* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for | |
496 | the symbol. */ | |
497 | HOWTO (R_PPC64_GOT16_LO, /* type */ | |
498 | 0, /* rightshift */ | |
499 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
500 | 16, /* bitsize */ | |
b34976b6 | 501 | FALSE, /* pc_relative */ |
5bd4f169 AM |
502 | 0, /* bitpos */ |
503 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 504 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 505 | "R_PPC64_GOT16_LO", /* name */ |
b34976b6 | 506 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
507 | 0, /* src_mask */ |
508 | 0xffff, /* dst_mask */ | |
b34976b6 | 509 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
510 | |
511 | /* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for | |
512 | the symbol. */ | |
513 | HOWTO (R_PPC64_GOT16_HI, /* type */ | |
514 | 16, /* rightshift */ | |
515 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
516 | 16, /* bitsize */ | |
b34976b6 | 517 | FALSE, /* pc_relative */ |
5bd4f169 | 518 | 0, /* bitpos */ |
f9c6b907 | 519 | complain_overflow_signed,/* complain_on_overflow */ |
805fc799 | 520 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 521 | "R_PPC64_GOT16_HI", /* name */ |
b34976b6 | 522 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
523 | 0, /* src_mask */ |
524 | 0xffff, /* dst_mask */ | |
b34976b6 | 525 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
526 | |
527 | /* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for | |
528 | the symbol. */ | |
529 | HOWTO (R_PPC64_GOT16_HA, /* type */ | |
530 | 16, /* rightshift */ | |
531 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
532 | 16, /* bitsize */ | |
b34976b6 | 533 | FALSE, /* pc_relative */ |
5bd4f169 | 534 | 0, /* bitpos */ |
f9c6b907 | 535 | complain_overflow_signed,/* complain_on_overflow */ |
805fc799 | 536 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 537 | "R_PPC64_GOT16_HA", /* name */ |
b34976b6 | 538 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
539 | 0, /* src_mask */ |
540 | 0xffff, /* dst_mask */ | |
b34976b6 | 541 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
542 | |
543 | /* This is used only by the dynamic linker. The symbol should exist | |
544 | both in the object being run and in some shared library. The | |
545 | dynamic linker copies the data addressed by the symbol from the | |
546 | shared library into the object, because the object being | |
547 | run has to have the data at some particular address. */ | |
548 | HOWTO (R_PPC64_COPY, /* type */ | |
549 | 0, /* rightshift */ | |
f5e87a1d AM |
550 | 0, /* this one is variable size */ |
551 | 0, /* bitsize */ | |
b34976b6 | 552 | FALSE, /* pc_relative */ |
5bd4f169 | 553 | 0, /* bitpos */ |
f5e87a1d AM |
554 | complain_overflow_dont, /* complain_on_overflow */ |
555 | ppc64_elf_unhandled_reloc, /* special_function */ | |
5bd4f169 | 556 | "R_PPC64_COPY", /* name */ |
b34976b6 | 557 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
558 | 0, /* src_mask */ |
559 | 0, /* dst_mask */ | |
b34976b6 | 560 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
561 | |
562 | /* Like R_PPC64_ADDR64, but used when setting global offset table | |
563 | entries. */ | |
564 | HOWTO (R_PPC64_GLOB_DAT, /* type */ | |
565 | 0, /* rightshift */ | |
566 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
567 | 64, /* bitsize */ | |
b34976b6 | 568 | FALSE, /* pc_relative */ |
5bd4f169 AM |
569 | 0, /* bitpos */ |
570 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 571 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 572 | "R_PPC64_GLOB_DAT", /* name */ |
b34976b6 | 573 | FALSE, /* partial_inplace */ |
5bd4f169 | 574 | 0, /* src_mask */ |
f5e87a1d | 575 | ONES (64), /* dst_mask */ |
b34976b6 | 576 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
577 | |
578 | /* Created by the link editor. Marks a procedure linkage table | |
579 | entry for a symbol. */ | |
580 | HOWTO (R_PPC64_JMP_SLOT, /* type */ | |
581 | 0, /* rightshift */ | |
582 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
583 | 0, /* bitsize */ | |
b34976b6 | 584 | FALSE, /* pc_relative */ |
5bd4f169 AM |
585 | 0, /* bitpos */ |
586 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 587 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 588 | "R_PPC64_JMP_SLOT", /* name */ |
b34976b6 | 589 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
590 | 0, /* src_mask */ |
591 | 0, /* dst_mask */ | |
b34976b6 | 592 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
593 | |
594 | /* Used only by the dynamic linker. When the object is run, this | |
595 | doubleword64 is set to the load address of the object, plus the | |
596 | addend. */ | |
597 | HOWTO (R_PPC64_RELATIVE, /* type */ | |
598 | 0, /* rightshift */ | |
599 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
600 | 64, /* bitsize */ | |
b34976b6 | 601 | FALSE, /* pc_relative */ |
5bd4f169 AM |
602 | 0, /* bitpos */ |
603 | complain_overflow_dont, /* complain_on_overflow */ | |
604 | bfd_elf_generic_reloc, /* special_function */ | |
605 | "R_PPC64_RELATIVE", /* name */ | |
b34976b6 | 606 | FALSE, /* partial_inplace */ |
5bd4f169 | 607 | 0, /* src_mask */ |
f5e87a1d | 608 | ONES (64), /* dst_mask */ |
b34976b6 | 609 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
610 | |
611 | /* Like R_PPC64_ADDR32, but may be unaligned. */ | |
612 | HOWTO (R_PPC64_UADDR32, /* type */ | |
613 | 0, /* rightshift */ | |
614 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
615 | 32, /* bitsize */ | |
b34976b6 | 616 | FALSE, /* pc_relative */ |
5bd4f169 AM |
617 | 0, /* bitpos */ |
618 | complain_overflow_bitfield, /* complain_on_overflow */ | |
619 | bfd_elf_generic_reloc, /* special_function */ | |
620 | "R_PPC64_UADDR32", /* name */ | |
b34976b6 | 621 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
622 | 0, /* src_mask */ |
623 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 624 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
625 | |
626 | /* Like R_PPC64_ADDR16, but may be unaligned. */ | |
627 | HOWTO (R_PPC64_UADDR16, /* type */ | |
628 | 0, /* rightshift */ | |
629 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
630 | 16, /* bitsize */ | |
b34976b6 | 631 | FALSE, /* pc_relative */ |
5bd4f169 AM |
632 | 0, /* bitpos */ |
633 | complain_overflow_bitfield, /* complain_on_overflow */ | |
634 | bfd_elf_generic_reloc, /* special_function */ | |
635 | "R_PPC64_UADDR16", /* name */ | |
b34976b6 | 636 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
637 | 0, /* src_mask */ |
638 | 0xffff, /* dst_mask */ | |
b34976b6 | 639 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
640 | |
641 | /* 32-bit PC relative. */ | |
642 | HOWTO (R_PPC64_REL32, /* type */ | |
643 | 0, /* rightshift */ | |
644 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
645 | 32, /* bitsize */ | |
b34976b6 | 646 | TRUE, /* pc_relative */ |
5bd4f169 | 647 | 0, /* bitpos */ |
5bd4f169 AM |
648 | complain_overflow_signed, /* complain_on_overflow */ |
649 | bfd_elf_generic_reloc, /* special_function */ | |
650 | "R_PPC64_REL32", /* name */ | |
b34976b6 | 651 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
652 | 0, /* src_mask */ |
653 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 654 | TRUE), /* pcrel_offset */ |
5bd4f169 | 655 | |
10ed1bba | 656 | /* 32-bit relocation to the symbol's procedure linkage table. */ |
5bd4f169 AM |
657 | HOWTO (R_PPC64_PLT32, /* type */ |
658 | 0, /* rightshift */ | |
659 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
660 | 32, /* bitsize */ | |
b34976b6 | 661 | FALSE, /* pc_relative */ |
5bd4f169 AM |
662 | 0, /* bitpos */ |
663 | complain_overflow_bitfield, /* complain_on_overflow */ | |
805fc799 | 664 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 665 | "R_PPC64_PLT32", /* name */ |
b34976b6 | 666 | FALSE, /* partial_inplace */ |
5bd4f169 | 667 | 0, /* src_mask */ |
f5e87a1d | 668 | 0xffffffff, /* dst_mask */ |
b34976b6 | 669 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
670 | |
671 | /* 32-bit PC relative relocation to the symbol's procedure linkage table. | |
672 | FIXME: R_PPC64_PLTREL32 not supported. */ | |
673 | HOWTO (R_PPC64_PLTREL32, /* type */ | |
674 | 0, /* rightshift */ | |
675 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
676 | 32, /* bitsize */ | |
b34976b6 | 677 | TRUE, /* pc_relative */ |
5bd4f169 AM |
678 | 0, /* bitpos */ |
679 | complain_overflow_signed, /* complain_on_overflow */ | |
680 | bfd_elf_generic_reloc, /* special_function */ | |
681 | "R_PPC64_PLTREL32", /* name */ | |
b34976b6 | 682 | FALSE, /* partial_inplace */ |
5bd4f169 | 683 | 0, /* src_mask */ |
f5e87a1d | 684 | 0xffffffff, /* dst_mask */ |
b34976b6 | 685 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
686 | |
687 | /* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for | |
688 | the symbol. */ | |
689 | HOWTO (R_PPC64_PLT16_LO, /* type */ | |
690 | 0, /* rightshift */ | |
691 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
692 | 16, /* bitsize */ | |
b34976b6 | 693 | FALSE, /* pc_relative */ |
5bd4f169 AM |
694 | 0, /* bitpos */ |
695 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 696 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 697 | "R_PPC64_PLT16_LO", /* name */ |
b34976b6 | 698 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
699 | 0, /* src_mask */ |
700 | 0xffff, /* dst_mask */ | |
b34976b6 | 701 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
702 | |
703 | /* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for | |
704 | the symbol. */ | |
705 | HOWTO (R_PPC64_PLT16_HI, /* type */ | |
706 | 16, /* rightshift */ | |
707 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
708 | 16, /* bitsize */ | |
b34976b6 | 709 | FALSE, /* pc_relative */ |
5bd4f169 | 710 | 0, /* bitpos */ |
f9c6b907 | 711 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 712 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 713 | "R_PPC64_PLT16_HI", /* name */ |
b34976b6 | 714 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
715 | 0, /* src_mask */ |
716 | 0xffff, /* dst_mask */ | |
b34976b6 | 717 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
718 | |
719 | /* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for | |
720 | the symbol. */ | |
721 | HOWTO (R_PPC64_PLT16_HA, /* type */ | |
722 | 16, /* rightshift */ | |
723 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
724 | 16, /* bitsize */ | |
b34976b6 | 725 | FALSE, /* pc_relative */ |
5bd4f169 | 726 | 0, /* bitpos */ |
f9c6b907 | 727 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 728 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 729 | "R_PPC64_PLT16_HA", /* name */ |
b34976b6 | 730 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
731 | 0, /* src_mask */ |
732 | 0xffff, /* dst_mask */ | |
b34976b6 | 733 | FALSE), /* pcrel_offset */ |
5bd4f169 | 734 | |
c061c2d8 | 735 | /* 16-bit section relative relocation. */ |
5bd4f169 AM |
736 | HOWTO (R_PPC64_SECTOFF, /* type */ |
737 | 0, /* rightshift */ | |
c061c2d8 AM |
738 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
739 | 16, /* bitsize */ | |
b34976b6 | 740 | FALSE, /* pc_relative */ |
5bd4f169 | 741 | 0, /* bitpos */ |
b80eed39 | 742 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 743 | ppc64_elf_sectoff_reloc, /* special_function */ |
5bd4f169 | 744 | "R_PPC64_SECTOFF", /* name */ |
b34976b6 | 745 | FALSE, /* partial_inplace */ |
5bd4f169 | 746 | 0, /* src_mask */ |
c061c2d8 | 747 | 0xffff, /* dst_mask */ |
b34976b6 | 748 | FALSE), /* pcrel_offset */ |
5bd4f169 | 749 | |
c061c2d8 | 750 | /* Like R_PPC64_SECTOFF, but no overflow warning. */ |
5bd4f169 AM |
751 | HOWTO (R_PPC64_SECTOFF_LO, /* type */ |
752 | 0, /* rightshift */ | |
753 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
754 | 16, /* bitsize */ | |
b34976b6 | 755 | FALSE, /* pc_relative */ |
5bd4f169 AM |
756 | 0, /* bitpos */ |
757 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 758 | ppc64_elf_sectoff_reloc, /* special_function */ |
5bd4f169 | 759 | "R_PPC64_SECTOFF_LO", /* name */ |
b34976b6 | 760 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
761 | 0, /* src_mask */ |
762 | 0xffff, /* dst_mask */ | |
b34976b6 | 763 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
764 | |
765 | /* 16-bit upper half section relative relocation. */ | |
766 | HOWTO (R_PPC64_SECTOFF_HI, /* type */ | |
767 | 16, /* rightshift */ | |
768 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
769 | 16, /* bitsize */ | |
b34976b6 | 770 | FALSE, /* pc_relative */ |
5bd4f169 | 771 | 0, /* bitpos */ |
f9c6b907 | 772 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 773 | ppc64_elf_sectoff_reloc, /* special_function */ |
5bd4f169 | 774 | "R_PPC64_SECTOFF_HI", /* name */ |
b34976b6 | 775 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
776 | 0, /* src_mask */ |
777 | 0xffff, /* dst_mask */ | |
b34976b6 | 778 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
779 | |
780 | /* 16-bit upper half adjusted section relative relocation. */ | |
781 | HOWTO (R_PPC64_SECTOFF_HA, /* type */ | |
782 | 16, /* rightshift */ | |
783 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
784 | 16, /* bitsize */ | |
b34976b6 | 785 | FALSE, /* pc_relative */ |
5bd4f169 | 786 | 0, /* bitpos */ |
f9c6b907 | 787 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 788 | ppc64_elf_sectoff_ha_reloc, /* special_function */ |
5bd4f169 | 789 | "R_PPC64_SECTOFF_HA", /* name */ |
b34976b6 | 790 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
791 | 0, /* src_mask */ |
792 | 0xffff, /* dst_mask */ | |
b34976b6 | 793 | FALSE), /* pcrel_offset */ |
5bd4f169 | 794 | |
04c9666a AM |
795 | /* Like R_PPC64_REL24 without touching the two least significant bits. */ |
796 | HOWTO (R_PPC64_REL30, /* type */ | |
5bd4f169 AM |
797 | 2, /* rightshift */ |
798 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
799 | 30, /* bitsize */ | |
b34976b6 | 800 | TRUE, /* pc_relative */ |
5bd4f169 AM |
801 | 0, /* bitpos */ |
802 | complain_overflow_dont, /* complain_on_overflow */ | |
803 | bfd_elf_generic_reloc, /* special_function */ | |
04c9666a | 804 | "R_PPC64_REL30", /* name */ |
b34976b6 | 805 | FALSE, /* partial_inplace */ |
d006db6c | 806 | 0, /* src_mask */ |
5bd4f169 | 807 | 0xfffffffc, /* dst_mask */ |
b34976b6 | 808 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
809 | |
810 | /* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */ | |
811 | ||
812 | /* A standard 64-bit relocation. */ | |
813 | HOWTO (R_PPC64_ADDR64, /* type */ | |
814 | 0, /* rightshift */ | |
815 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
816 | 64, /* bitsize */ | |
b34976b6 | 817 | FALSE, /* pc_relative */ |
5bd4f169 AM |
818 | 0, /* bitpos */ |
819 | complain_overflow_dont, /* complain_on_overflow */ | |
820 | bfd_elf_generic_reloc, /* special_function */ | |
821 | "R_PPC64_ADDR64", /* name */ | |
b34976b6 | 822 | FALSE, /* partial_inplace */ |
5bd4f169 | 823 | 0, /* src_mask */ |
f5e87a1d | 824 | ONES (64), /* dst_mask */ |
b34976b6 | 825 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
826 | |
827 | /* The bits 32-47 of an address. */ | |
828 | HOWTO (R_PPC64_ADDR16_HIGHER, /* type */ | |
829 | 32, /* rightshift */ | |
830 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
831 | 16, /* bitsize */ | |
b34976b6 | 832 | FALSE, /* pc_relative */ |
5bd4f169 AM |
833 | 0, /* bitpos */ |
834 | complain_overflow_dont, /* complain_on_overflow */ | |
835 | bfd_elf_generic_reloc, /* special_function */ | |
836 | "R_PPC64_ADDR16_HIGHER", /* name */ | |
b34976b6 | 837 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
838 | 0, /* src_mask */ |
839 | 0xffff, /* dst_mask */ | |
b34976b6 | 840 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
841 | |
842 | /* The bits 32-47 of an address, plus 1 if the contents of the low | |
843 | 16 bits, treated as a signed number, is negative. */ | |
844 | HOWTO (R_PPC64_ADDR16_HIGHERA, /* type */ | |
845 | 32, /* rightshift */ | |
846 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
847 | 16, /* bitsize */ | |
b34976b6 | 848 | FALSE, /* pc_relative */ |
5bd4f169 AM |
849 | 0, /* bitpos */ |
850 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 851 | ppc64_elf_ha_reloc, /* special_function */ |
5bd4f169 | 852 | "R_PPC64_ADDR16_HIGHERA", /* name */ |
b34976b6 | 853 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
854 | 0, /* src_mask */ |
855 | 0xffff, /* dst_mask */ | |
b34976b6 | 856 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
857 | |
858 | /* The bits 48-63 of an address. */ | |
859 | HOWTO (R_PPC64_ADDR16_HIGHEST,/* type */ | |
860 | 48, /* rightshift */ | |
861 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
862 | 16, /* bitsize */ | |
b34976b6 | 863 | FALSE, /* pc_relative */ |
5bd4f169 AM |
864 | 0, /* bitpos */ |
865 | complain_overflow_dont, /* complain_on_overflow */ | |
866 | bfd_elf_generic_reloc, /* special_function */ | |
867 | "R_PPC64_ADDR16_HIGHEST", /* name */ | |
b34976b6 | 868 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
869 | 0, /* src_mask */ |
870 | 0xffff, /* dst_mask */ | |
b34976b6 | 871 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
872 | |
873 | /* The bits 48-63 of an address, plus 1 if the contents of the low | |
874 | 16 bits, treated as a signed number, is negative. */ | |
875 | HOWTO (R_PPC64_ADDR16_HIGHESTA,/* type */ | |
876 | 48, /* rightshift */ | |
877 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
878 | 16, /* bitsize */ | |
b34976b6 | 879 | FALSE, /* pc_relative */ |
5bd4f169 AM |
880 | 0, /* bitpos */ |
881 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 882 | ppc64_elf_ha_reloc, /* special_function */ |
5bd4f169 | 883 | "R_PPC64_ADDR16_HIGHESTA", /* name */ |
b34976b6 | 884 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
885 | 0, /* src_mask */ |
886 | 0xffff, /* dst_mask */ | |
b34976b6 | 887 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
888 | |
889 | /* Like ADDR64, but may be unaligned. */ | |
890 | HOWTO (R_PPC64_UADDR64, /* type */ | |
891 | 0, /* rightshift */ | |
892 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
893 | 64, /* bitsize */ | |
b34976b6 | 894 | FALSE, /* pc_relative */ |
5bd4f169 AM |
895 | 0, /* bitpos */ |
896 | complain_overflow_dont, /* complain_on_overflow */ | |
897 | bfd_elf_generic_reloc, /* special_function */ | |
898 | "R_PPC64_UADDR64", /* name */ | |
b34976b6 | 899 | FALSE, /* partial_inplace */ |
5bd4f169 | 900 | 0, /* src_mask */ |
f5e87a1d | 901 | ONES (64), /* dst_mask */ |
b34976b6 | 902 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
903 | |
904 | /* 64-bit relative relocation. */ | |
905 | HOWTO (R_PPC64_REL64, /* type */ | |
906 | 0, /* rightshift */ | |
907 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
908 | 64, /* bitsize */ | |
b34976b6 | 909 | TRUE, /* pc_relative */ |
5bd4f169 AM |
910 | 0, /* bitpos */ |
911 | complain_overflow_dont, /* complain_on_overflow */ | |
912 | bfd_elf_generic_reloc, /* special_function */ | |
913 | "R_PPC64_REL64", /* name */ | |
b34976b6 | 914 | FALSE, /* partial_inplace */ |
5bd4f169 | 915 | 0, /* src_mask */ |
f5e87a1d | 916 | ONES (64), /* dst_mask */ |
b34976b6 | 917 | TRUE), /* pcrel_offset */ |
5bd4f169 | 918 | |
cedb70c5 | 919 | /* 64-bit relocation to the symbol's procedure linkage table. */ |
5bd4f169 AM |
920 | HOWTO (R_PPC64_PLT64, /* type */ |
921 | 0, /* rightshift */ | |
922 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
923 | 64, /* bitsize */ | |
b34976b6 | 924 | FALSE, /* pc_relative */ |
5bd4f169 AM |
925 | 0, /* bitpos */ |
926 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 927 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 928 | "R_PPC64_PLT64", /* name */ |
b34976b6 | 929 | FALSE, /* partial_inplace */ |
5bd4f169 | 930 | 0, /* src_mask */ |
f5e87a1d | 931 | ONES (64), /* dst_mask */ |
b34976b6 | 932 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
933 | |
934 | /* 64-bit PC relative relocation to the symbol's procedure linkage | |
935 | table. */ | |
936 | /* FIXME: R_PPC64_PLTREL64 not supported. */ | |
937 | HOWTO (R_PPC64_PLTREL64, /* type */ | |
938 | 0, /* rightshift */ | |
939 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
940 | 64, /* bitsize */ | |
b34976b6 | 941 | TRUE, /* pc_relative */ |
5bd4f169 AM |
942 | 0, /* bitpos */ |
943 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 944 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 945 | "R_PPC64_PLTREL64", /* name */ |
b34976b6 | 946 | FALSE, /* partial_inplace */ |
5bd4f169 | 947 | 0, /* src_mask */ |
f5e87a1d | 948 | ONES (64), /* dst_mask */ |
b34976b6 | 949 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
950 | |
951 | /* 16 bit TOC-relative relocation. */ | |
952 | ||
953 | /* R_PPC64_TOC16 47 half16* S + A - .TOC. */ | |
954 | HOWTO (R_PPC64_TOC16, /* type */ | |
955 | 0, /* rightshift */ | |
956 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
957 | 16, /* bitsize */ | |
b34976b6 | 958 | FALSE, /* pc_relative */ |
5bd4f169 AM |
959 | 0, /* bitpos */ |
960 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 961 | ppc64_elf_toc_reloc, /* special_function */ |
5bd4f169 | 962 | "R_PPC64_TOC16", /* name */ |
b34976b6 | 963 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
964 | 0, /* src_mask */ |
965 | 0xffff, /* dst_mask */ | |
b34976b6 | 966 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
967 | |
968 | /* 16 bit TOC-relative relocation without overflow. */ | |
969 | ||
970 | /* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */ | |
971 | HOWTO (R_PPC64_TOC16_LO, /* type */ | |
972 | 0, /* rightshift */ | |
973 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
974 | 16, /* bitsize */ | |
b34976b6 | 975 | FALSE, /* pc_relative */ |
5bd4f169 AM |
976 | 0, /* bitpos */ |
977 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 978 | ppc64_elf_toc_reloc, /* special_function */ |
5bd4f169 | 979 | "R_PPC64_TOC16_LO", /* name */ |
b34976b6 | 980 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
981 | 0, /* src_mask */ |
982 | 0xffff, /* dst_mask */ | |
b34976b6 | 983 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
984 | |
985 | /* 16 bit TOC-relative relocation, high 16 bits. */ | |
986 | ||
987 | /* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */ | |
988 | HOWTO (R_PPC64_TOC16_HI, /* type */ | |
989 | 16, /* rightshift */ | |
990 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
991 | 16, /* bitsize */ | |
b34976b6 | 992 | FALSE, /* pc_relative */ |
5bd4f169 | 993 | 0, /* bitpos */ |
f9c6b907 | 994 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 995 | ppc64_elf_toc_reloc, /* special_function */ |
5bd4f169 | 996 | "R_PPC64_TOC16_HI", /* name */ |
b34976b6 | 997 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
998 | 0, /* src_mask */ |
999 | 0xffff, /* dst_mask */ | |
b34976b6 | 1000 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
1001 | |
1002 | /* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the | |
1003 | contents of the low 16 bits, treated as a signed number, is | |
1004 | negative. */ | |
1005 | ||
1006 | /* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */ | |
1007 | HOWTO (R_PPC64_TOC16_HA, /* type */ | |
1008 | 16, /* rightshift */ | |
1009 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1010 | 16, /* bitsize */ | |
b34976b6 | 1011 | FALSE, /* pc_relative */ |
5bd4f169 | 1012 | 0, /* bitpos */ |
f9c6b907 | 1013 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 1014 | ppc64_elf_toc_ha_reloc, /* special_function */ |
5bd4f169 | 1015 | "R_PPC64_TOC16_HA", /* name */ |
b34976b6 | 1016 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1017 | 0, /* src_mask */ |
1018 | 0xffff, /* dst_mask */ | |
b34976b6 | 1019 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
1020 | |
1021 | /* 64-bit relocation; insert value of TOC base (.TOC.). */ | |
1022 | ||
1023 | /* R_PPC64_TOC 51 doubleword64 .TOC. */ | |
1024 | HOWTO (R_PPC64_TOC, /* type */ | |
1025 | 0, /* rightshift */ | |
1026 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
1027 | 64, /* bitsize */ | |
b34976b6 | 1028 | FALSE, /* pc_relative */ |
5bd4f169 | 1029 | 0, /* bitpos */ |
b80eed39 | 1030 | complain_overflow_dont, /* complain_on_overflow */ |
805fc799 | 1031 | ppc64_elf_toc64_reloc, /* special_function */ |
5bd4f169 | 1032 | "R_PPC64_TOC", /* name */ |
b34976b6 | 1033 | FALSE, /* partial_inplace */ |
5bd4f169 | 1034 | 0, /* src_mask */ |
f5e87a1d | 1035 | ONES (64), /* dst_mask */ |
b34976b6 | 1036 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
1037 | |
1038 | /* Like R_PPC64_GOT16, but also informs the link editor that the | |
1039 | value to relocate may (!) refer to a PLT entry which the link | |
1040 | editor (a) may replace with the symbol value. If the link editor | |
1041 | is unable to fully resolve the symbol, it may (b) create a PLT | |
1042 | entry and store the address to the new PLT entry in the GOT. | |
1043 | This permits lazy resolution of function symbols at run time. | |
1044 | The link editor may also skip all of this and just (c) emit a | |
1045 | R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */ | |
1046 | /* FIXME: R_PPC64_PLTGOT16 not implemented. */ | |
1047 | HOWTO (R_PPC64_PLTGOT16, /* type */ | |
1048 | 0, /* rightshift */ | |
1049 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1050 | 16, /* bitsize */ | |
b34976b6 | 1051 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1052 | 0, /* bitpos */ |
1053 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 1054 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb AM |
1055 | "R_PPC64_PLTGOT16", /* name */ |
1056 | FALSE, /* partial_inplace */ | |
1057 | 0, /* src_mask */ | |
1058 | 0xffff, /* dst_mask */ | |
1059 | FALSE), /* pcrel_offset */ | |
1060 | ||
1061 | /* Like R_PPC64_PLTGOT16, but without overflow. */ | |
1062 | /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */ | |
1063 | HOWTO (R_PPC64_PLTGOT16_LO, /* type */ | |
1064 | 0, /* rightshift */ | |
1065 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1066 | 16, /* bitsize */ | |
1067 | FALSE, /* pc_relative */ | |
1068 | 0, /* bitpos */ | |
1069 | complain_overflow_dont, /* complain_on_overflow */ | |
1070 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1071 | "R_PPC64_PLTGOT16_LO", /* name */ | |
1072 | FALSE, /* partial_inplace */ | |
1073 | 0, /* src_mask */ | |
1074 | 0xffff, /* dst_mask */ | |
1075 | FALSE), /* pcrel_offset */ | |
1076 | ||
1077 | /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */ | |
1078 | /* FIXME: R_PPC64_PLTGOT16_HI not implemented. */ | |
1079 | HOWTO (R_PPC64_PLTGOT16_HI, /* type */ | |
1080 | 16, /* rightshift */ | |
1081 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1082 | 16, /* bitsize */ | |
1083 | FALSE, /* pc_relative */ | |
1084 | 0, /* bitpos */ | |
f9c6b907 | 1085 | complain_overflow_signed, /* complain_on_overflow */ |
411e1bfb AM |
1086 | ppc64_elf_unhandled_reloc, /* special_function */ |
1087 | "R_PPC64_PLTGOT16_HI", /* name */ | |
1088 | FALSE, /* partial_inplace */ | |
1089 | 0, /* src_mask */ | |
1090 | 0xffff, /* dst_mask */ | |
1091 | FALSE), /* pcrel_offset */ | |
1092 | ||
1093 | /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus | |
1094 | 1 if the contents of the low 16 bits, treated as a signed number, | |
1095 | is negative. */ | |
1096 | /* FIXME: R_PPC64_PLTGOT16_HA not implemented. */ | |
1097 | HOWTO (R_PPC64_PLTGOT16_HA, /* type */ | |
1098 | 16, /* rightshift */ | |
1099 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1100 | 16, /* bitsize */ | |
1101 | FALSE, /* pc_relative */ | |
1102 | 0, /* bitpos */ | |
f9c6b907 | 1103 | complain_overflow_signed, /* complain_on_overflow */ |
411e1bfb AM |
1104 | ppc64_elf_unhandled_reloc, /* special_function */ |
1105 | "R_PPC64_PLTGOT16_HA", /* name */ | |
1106 | FALSE, /* partial_inplace */ | |
1107 | 0, /* src_mask */ | |
1108 | 0xffff, /* dst_mask */ | |
1109 | FALSE), /* pcrel_offset */ | |
1110 | ||
1111 | /* Like R_PPC64_ADDR16, but for instructions with a DS field. */ | |
1112 | HOWTO (R_PPC64_ADDR16_DS, /* type */ | |
1113 | 0, /* rightshift */ | |
1114 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1115 | 16, /* bitsize */ | |
1116 | FALSE, /* pc_relative */ | |
1117 | 0, /* bitpos */ | |
b80eed39 | 1118 | complain_overflow_signed, /* complain_on_overflow */ |
411e1bfb AM |
1119 | bfd_elf_generic_reloc, /* special_function */ |
1120 | "R_PPC64_ADDR16_DS", /* name */ | |
1121 | FALSE, /* partial_inplace */ | |
1122 | 0, /* src_mask */ | |
1123 | 0xfffc, /* dst_mask */ | |
1124 | FALSE), /* pcrel_offset */ | |
1125 | ||
1126 | /* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */ | |
1127 | HOWTO (R_PPC64_ADDR16_LO_DS, /* type */ | |
1128 | 0, /* rightshift */ | |
1129 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1130 | 16, /* bitsize */ | |
1131 | FALSE, /* pc_relative */ | |
1132 | 0, /* bitpos */ | |
1133 | complain_overflow_dont,/* complain_on_overflow */ | |
1134 | bfd_elf_generic_reloc, /* special_function */ | |
1135 | "R_PPC64_ADDR16_LO_DS",/* name */ | |
1136 | FALSE, /* partial_inplace */ | |
1137 | 0, /* src_mask */ | |
1138 | 0xfffc, /* dst_mask */ | |
1139 | FALSE), /* pcrel_offset */ | |
1140 | ||
1141 | /* Like R_PPC64_GOT16, but for instructions with a DS field. */ | |
1142 | HOWTO (R_PPC64_GOT16_DS, /* type */ | |
1143 | 0, /* rightshift */ | |
1144 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1145 | 16, /* bitsize */ | |
1146 | FALSE, /* pc_relative */ | |
1147 | 0, /* bitpos */ | |
1148 | complain_overflow_signed, /* complain_on_overflow */ | |
1149 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1150 | "R_PPC64_GOT16_DS", /* name */ | |
1151 | FALSE, /* partial_inplace */ | |
1152 | 0, /* src_mask */ | |
1153 | 0xfffc, /* dst_mask */ | |
1154 | FALSE), /* pcrel_offset */ | |
1155 | ||
1156 | /* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */ | |
1157 | HOWTO (R_PPC64_GOT16_LO_DS, /* type */ | |
1158 | 0, /* rightshift */ | |
1159 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1160 | 16, /* bitsize */ | |
1161 | FALSE, /* pc_relative */ | |
1162 | 0, /* bitpos */ | |
1163 | complain_overflow_dont, /* complain_on_overflow */ | |
1164 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1165 | "R_PPC64_GOT16_LO_DS", /* name */ | |
1166 | FALSE, /* partial_inplace */ | |
1167 | 0, /* src_mask */ | |
1168 | 0xfffc, /* dst_mask */ | |
1169 | FALSE), /* pcrel_offset */ | |
1170 | ||
1171 | /* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */ | |
1172 | HOWTO (R_PPC64_PLT16_LO_DS, /* type */ | |
1173 | 0, /* rightshift */ | |
1174 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1175 | 16, /* bitsize */ | |
1176 | FALSE, /* pc_relative */ | |
1177 | 0, /* bitpos */ | |
1178 | complain_overflow_dont, /* complain_on_overflow */ | |
1179 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1180 | "R_PPC64_PLT16_LO_DS", /* name */ | |
1181 | FALSE, /* partial_inplace */ | |
1182 | 0, /* src_mask */ | |
1183 | 0xfffc, /* dst_mask */ | |
1184 | FALSE), /* pcrel_offset */ | |
1185 | ||
1186 | /* Like R_PPC64_SECTOFF, but for instructions with a DS field. */ | |
1187 | HOWTO (R_PPC64_SECTOFF_DS, /* type */ | |
1188 | 0, /* rightshift */ | |
1189 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1190 | 16, /* bitsize */ | |
1191 | FALSE, /* pc_relative */ | |
1192 | 0, /* bitpos */ | |
b80eed39 | 1193 | complain_overflow_signed, /* complain_on_overflow */ |
411e1bfb AM |
1194 | ppc64_elf_sectoff_reloc, /* special_function */ |
1195 | "R_PPC64_SECTOFF_DS", /* name */ | |
1196 | FALSE, /* partial_inplace */ | |
1197 | 0, /* src_mask */ | |
1198 | 0xfffc, /* dst_mask */ | |
1199 | FALSE), /* pcrel_offset */ | |
1200 | ||
1201 | /* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */ | |
1202 | HOWTO (R_PPC64_SECTOFF_LO_DS, /* type */ | |
1203 | 0, /* rightshift */ | |
1204 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1205 | 16, /* bitsize */ | |
1206 | FALSE, /* pc_relative */ | |
1207 | 0, /* bitpos */ | |
1208 | complain_overflow_dont, /* complain_on_overflow */ | |
1209 | ppc64_elf_sectoff_reloc, /* special_function */ | |
1210 | "R_PPC64_SECTOFF_LO_DS",/* name */ | |
1211 | FALSE, /* partial_inplace */ | |
1212 | 0, /* src_mask */ | |
1213 | 0xfffc, /* dst_mask */ | |
1214 | FALSE), /* pcrel_offset */ | |
1215 | ||
1216 | /* Like R_PPC64_TOC16, but for instructions with a DS field. */ | |
1217 | HOWTO (R_PPC64_TOC16_DS, /* type */ | |
1218 | 0, /* rightshift */ | |
1219 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1220 | 16, /* bitsize */ | |
1221 | FALSE, /* pc_relative */ | |
1222 | 0, /* bitpos */ | |
1223 | complain_overflow_signed, /* complain_on_overflow */ | |
1224 | ppc64_elf_toc_reloc, /* special_function */ | |
1225 | "R_PPC64_TOC16_DS", /* name */ | |
1226 | FALSE, /* partial_inplace */ | |
1227 | 0, /* src_mask */ | |
1228 | 0xfffc, /* dst_mask */ | |
1229 | FALSE), /* pcrel_offset */ | |
1230 | ||
1231 | /* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */ | |
1232 | HOWTO (R_PPC64_TOC16_LO_DS, /* type */ | |
1233 | 0, /* rightshift */ | |
1234 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1235 | 16, /* bitsize */ | |
1236 | FALSE, /* pc_relative */ | |
1237 | 0, /* bitpos */ | |
1238 | complain_overflow_dont, /* complain_on_overflow */ | |
1239 | ppc64_elf_toc_reloc, /* special_function */ | |
1240 | "R_PPC64_TOC16_LO_DS", /* name */ | |
1241 | FALSE, /* partial_inplace */ | |
1242 | 0, /* src_mask */ | |
1243 | 0xfffc, /* dst_mask */ | |
1244 | FALSE), /* pcrel_offset */ | |
1245 | ||
1246 | /* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */ | |
1247 | /* FIXME: R_PPC64_PLTGOT16_DS not implemented. */ | |
6bfdb61b | 1248 | HOWTO (R_PPC64_PLTGOT16_DS, /* type */ |
411e1bfb AM |
1249 | 0, /* rightshift */ |
1250 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1251 | 16, /* bitsize */ | |
1252 | FALSE, /* pc_relative */ | |
1253 | 0, /* bitpos */ | |
1254 | complain_overflow_signed, /* complain_on_overflow */ | |
1255 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1256 | "R_PPC64_PLTGOT16_DS", /* name */ | |
1257 | FALSE, /* partial_inplace */ | |
1258 | 0, /* src_mask */ | |
1259 | 0xfffc, /* dst_mask */ | |
1260 | FALSE), /* pcrel_offset */ | |
1261 | ||
1262 | /* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */ | |
1263 | /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */ | |
1264 | HOWTO (R_PPC64_PLTGOT16_LO_DS,/* type */ | |
1265 | 0, /* rightshift */ | |
1266 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1267 | 16, /* bitsize */ | |
1268 | FALSE, /* pc_relative */ | |
1269 | 0, /* bitpos */ | |
1270 | complain_overflow_dont, /* complain_on_overflow */ | |
1271 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1272 | "R_PPC64_PLTGOT16_LO_DS",/* name */ | |
1273 | FALSE, /* partial_inplace */ | |
1274 | 0, /* src_mask */ | |
1275 | 0xfffc, /* dst_mask */ | |
1276 | FALSE), /* pcrel_offset */ | |
1277 | ||
727fc41e | 1278 | /* Marker relocs for TLS. */ |
411e1bfb AM |
1279 | HOWTO (R_PPC64_TLS, |
1280 | 0, /* rightshift */ | |
1281 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1282 | 32, /* bitsize */ | |
1283 | FALSE, /* pc_relative */ | |
1284 | 0, /* bitpos */ | |
1285 | complain_overflow_dont, /* complain_on_overflow */ | |
1286 | bfd_elf_generic_reloc, /* special_function */ | |
1287 | "R_PPC64_TLS", /* name */ | |
1288 | FALSE, /* partial_inplace */ | |
1289 | 0, /* src_mask */ | |
1290 | 0, /* dst_mask */ | |
1291 | FALSE), /* pcrel_offset */ | |
1292 | ||
727fc41e AM |
1293 | HOWTO (R_PPC64_TLSGD, |
1294 | 0, /* rightshift */ | |
1295 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1296 | 32, /* bitsize */ | |
1297 | FALSE, /* pc_relative */ | |
1298 | 0, /* bitpos */ | |
1299 | complain_overflow_dont, /* complain_on_overflow */ | |
1300 | bfd_elf_generic_reloc, /* special_function */ | |
1301 | "R_PPC64_TLSGD", /* name */ | |
1302 | FALSE, /* partial_inplace */ | |
1303 | 0, /* src_mask */ | |
1304 | 0, /* dst_mask */ | |
1305 | FALSE), /* pcrel_offset */ | |
1306 | ||
1307 | HOWTO (R_PPC64_TLSLD, | |
1308 | 0, /* rightshift */ | |
1309 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1310 | 32, /* bitsize */ | |
1311 | FALSE, /* pc_relative */ | |
1312 | 0, /* bitpos */ | |
1313 | complain_overflow_dont, /* complain_on_overflow */ | |
1314 | bfd_elf_generic_reloc, /* special_function */ | |
1315 | "R_PPC64_TLSLD", /* name */ | |
1316 | FALSE, /* partial_inplace */ | |
1317 | 0, /* src_mask */ | |
1318 | 0, /* dst_mask */ | |
1319 | FALSE), /* pcrel_offset */ | |
1320 | ||
3b421ab3 AM |
1321 | HOWTO (R_PPC64_TOCSAVE, |
1322 | 0, /* rightshift */ | |
1323 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1324 | 32, /* bitsize */ | |
1325 | FALSE, /* pc_relative */ | |
1326 | 0, /* bitpos */ | |
1327 | complain_overflow_dont, /* complain_on_overflow */ | |
1328 | bfd_elf_generic_reloc, /* special_function */ | |
1329 | "R_PPC64_TOCSAVE", /* name */ | |
1330 | FALSE, /* partial_inplace */ | |
1331 | 0, /* src_mask */ | |
1332 | 0, /* dst_mask */ | |
1333 | FALSE), /* pcrel_offset */ | |
1334 | ||
411e1bfb AM |
1335 | /* Computes the load module index of the load module that contains the |
1336 | definition of its TLS sym. */ | |
1337 | HOWTO (R_PPC64_DTPMOD64, | |
1338 | 0, /* rightshift */ | |
1339 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
1340 | 64, /* bitsize */ | |
1341 | FALSE, /* pc_relative */ | |
1342 | 0, /* bitpos */ | |
1343 | complain_overflow_dont, /* complain_on_overflow */ | |
1344 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1345 | "R_PPC64_DTPMOD64", /* name */ | |
1346 | FALSE, /* partial_inplace */ | |
1347 | 0, /* src_mask */ | |
1348 | ONES (64), /* dst_mask */ | |
1349 | FALSE), /* pcrel_offset */ | |
1350 | ||
1351 | /* Computes a dtv-relative displacement, the difference between the value | |
1352 | of sym+add and the base address of the thread-local storage block that | |
1353 | contains the definition of sym, minus 0x8000. */ | |
1354 | HOWTO (R_PPC64_DTPREL64, | |
1355 | 0, /* rightshift */ | |
1356 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
1357 | 64, /* bitsize */ | |
1358 | FALSE, /* pc_relative */ | |
1359 | 0, /* bitpos */ | |
1360 | complain_overflow_dont, /* complain_on_overflow */ | |
1361 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1362 | "R_PPC64_DTPREL64", /* name */ | |
1363 | FALSE, /* partial_inplace */ | |
1364 | 0, /* src_mask */ | |
1365 | ONES (64), /* dst_mask */ | |
1366 | FALSE), /* pcrel_offset */ | |
1367 | ||
1368 | /* A 16 bit dtprel reloc. */ | |
1369 | HOWTO (R_PPC64_DTPREL16, | |
1370 | 0, /* rightshift */ | |
1371 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1372 | 16, /* bitsize */ | |
1373 | FALSE, /* pc_relative */ | |
1374 | 0, /* bitpos */ | |
1375 | complain_overflow_signed, /* complain_on_overflow */ | |
1376 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1377 | "R_PPC64_DTPREL16", /* name */ | |
1378 | FALSE, /* partial_inplace */ | |
1379 | 0, /* src_mask */ | |
1380 | 0xffff, /* dst_mask */ | |
1381 | FALSE), /* pcrel_offset */ | |
1382 | ||
1383 | /* Like DTPREL16, but no overflow. */ | |
1384 | HOWTO (R_PPC64_DTPREL16_LO, | |
1385 | 0, /* rightshift */ | |
1386 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1387 | 16, /* bitsize */ | |
1388 | FALSE, /* pc_relative */ | |
1389 | 0, /* bitpos */ | |
1390 | complain_overflow_dont, /* complain_on_overflow */ | |
1391 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1392 | "R_PPC64_DTPREL16_LO", /* name */ | |
1393 | FALSE, /* partial_inplace */ | |
1394 | 0, /* src_mask */ | |
1395 | 0xffff, /* dst_mask */ | |
1396 | FALSE), /* pcrel_offset */ | |
1397 | ||
1398 | /* Like DTPREL16_LO, but next higher group of 16 bits. */ | |
1399 | HOWTO (R_PPC64_DTPREL16_HI, | |
1400 | 16, /* rightshift */ | |
1401 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1402 | 16, /* bitsize */ | |
1403 | FALSE, /* pc_relative */ | |
1404 | 0, /* bitpos */ | |
f9c6b907 | 1405 | complain_overflow_signed, /* complain_on_overflow */ |
411e1bfb AM |
1406 | ppc64_elf_unhandled_reloc, /* special_function */ |
1407 | "R_PPC64_DTPREL16_HI", /* name */ | |
1408 | FALSE, /* partial_inplace */ | |
1409 | 0, /* src_mask */ | |
1410 | 0xffff, /* dst_mask */ | |
1411 | FALSE), /* pcrel_offset */ | |
1412 | ||
1413 | /* Like DTPREL16_HI, but adjust for low 16 bits. */ | |
1414 | HOWTO (R_PPC64_DTPREL16_HA, | |
1415 | 16, /* rightshift */ | |
1416 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1417 | 16, /* bitsize */ | |
1418 | FALSE, /* pc_relative */ | |
1419 | 0, /* bitpos */ | |
f9c6b907 | 1420 | complain_overflow_signed, /* complain_on_overflow */ |
411e1bfb AM |
1421 | ppc64_elf_unhandled_reloc, /* special_function */ |
1422 | "R_PPC64_DTPREL16_HA", /* name */ | |
1423 | FALSE, /* partial_inplace */ | |
1424 | 0, /* src_mask */ | |
1425 | 0xffff, /* dst_mask */ | |
1426 | FALSE), /* pcrel_offset */ | |
1427 | ||
1428 | /* Like DTPREL16_HI, but next higher group of 16 bits. */ | |
1429 | HOWTO (R_PPC64_DTPREL16_HIGHER, | |
1430 | 32, /* rightshift */ | |
1431 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1432 | 16, /* bitsize */ | |
1433 | FALSE, /* pc_relative */ | |
1434 | 0, /* bitpos */ | |
1435 | complain_overflow_dont, /* complain_on_overflow */ | |
1436 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1437 | "R_PPC64_DTPREL16_HIGHER", /* name */ | |
1438 | FALSE, /* partial_inplace */ | |
1439 | 0, /* src_mask */ | |
1440 | 0xffff, /* dst_mask */ | |
1441 | FALSE), /* pcrel_offset */ | |
1442 | ||
1443 | /* Like DTPREL16_HIGHER, but adjust for low 16 bits. */ | |
1444 | HOWTO (R_PPC64_DTPREL16_HIGHERA, | |
1445 | 32, /* rightshift */ | |
1446 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1447 | 16, /* bitsize */ | |
1448 | FALSE, /* pc_relative */ | |
1449 | 0, /* bitpos */ | |
1450 | complain_overflow_dont, /* complain_on_overflow */ | |
1451 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1452 | "R_PPC64_DTPREL16_HIGHERA", /* name */ | |
1453 | FALSE, /* partial_inplace */ | |
1454 | 0, /* src_mask */ | |
1455 | 0xffff, /* dst_mask */ | |
1456 | FALSE), /* pcrel_offset */ | |
1457 | ||
1458 | /* Like DTPREL16_HIGHER, but next higher group of 16 bits. */ | |
1459 | HOWTO (R_PPC64_DTPREL16_HIGHEST, | |
1460 | 48, /* rightshift */ | |
1461 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1462 | 16, /* bitsize */ | |
1463 | FALSE, /* pc_relative */ | |
1464 | 0, /* bitpos */ | |
1465 | complain_overflow_dont, /* complain_on_overflow */ | |
1466 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1467 | "R_PPC64_DTPREL16_HIGHEST", /* name */ | |
1468 | FALSE, /* partial_inplace */ | |
1469 | 0, /* src_mask */ | |
1470 | 0xffff, /* dst_mask */ | |
1471 | FALSE), /* pcrel_offset */ | |
1472 | ||
1473 | /* Like DTPREL16_HIGHEST, but adjust for low 16 bits. */ | |
1474 | HOWTO (R_PPC64_DTPREL16_HIGHESTA, | |
1475 | 48, /* rightshift */ | |
1476 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1477 | 16, /* bitsize */ | |
1478 | FALSE, /* pc_relative */ | |
1479 | 0, /* bitpos */ | |
1480 | complain_overflow_dont, /* complain_on_overflow */ | |
1481 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1482 | "R_PPC64_DTPREL16_HIGHESTA", /* name */ | |
1483 | FALSE, /* partial_inplace */ | |
1484 | 0, /* src_mask */ | |
1485 | 0xffff, /* dst_mask */ | |
1486 | FALSE), /* pcrel_offset */ | |
1487 | ||
1488 | /* Like DTPREL16, but for insns with a DS field. */ | |
1489 | HOWTO (R_PPC64_DTPREL16_DS, | |
1490 | 0, /* rightshift */ | |
1491 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1492 | 16, /* bitsize */ | |
1493 | FALSE, /* pc_relative */ | |
1494 | 0, /* bitpos */ | |
1495 | complain_overflow_signed, /* complain_on_overflow */ | |
1496 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1497 | "R_PPC64_DTPREL16_DS", /* name */ | |
1498 | FALSE, /* partial_inplace */ | |
1499 | 0, /* src_mask */ | |
1500 | 0xfffc, /* dst_mask */ | |
1501 | FALSE), /* pcrel_offset */ | |
1502 | ||
1503 | /* Like DTPREL16_DS, but no overflow. */ | |
1504 | HOWTO (R_PPC64_DTPREL16_LO_DS, | |
1505 | 0, /* rightshift */ | |
1506 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1507 | 16, /* bitsize */ | |
1508 | FALSE, /* pc_relative */ | |
1509 | 0, /* bitpos */ | |
1510 | complain_overflow_dont, /* complain_on_overflow */ | |
1511 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1512 | "R_PPC64_DTPREL16_LO_DS", /* name */ | |
1513 | FALSE, /* partial_inplace */ | |
1514 | 0, /* src_mask */ | |
1515 | 0xfffc, /* dst_mask */ | |
1516 | FALSE), /* pcrel_offset */ | |
1517 | ||
1518 | /* Computes a tp-relative displacement, the difference between the value of | |
1519 | sym+add and the value of the thread pointer (r13). */ | |
1520 | HOWTO (R_PPC64_TPREL64, | |
1521 | 0, /* rightshift */ | |
1522 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
1523 | 64, /* bitsize */ | |
1524 | FALSE, /* pc_relative */ | |
1525 | 0, /* bitpos */ | |
1526 | complain_overflow_dont, /* complain_on_overflow */ | |
1527 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1528 | "R_PPC64_TPREL64", /* name */ | |
1529 | FALSE, /* partial_inplace */ | |
1530 | 0, /* src_mask */ | |
1531 | ONES (64), /* dst_mask */ | |
1532 | FALSE), /* pcrel_offset */ | |
1533 | ||
1534 | /* A 16 bit tprel reloc. */ | |
1535 | HOWTO (R_PPC64_TPREL16, | |
1536 | 0, /* rightshift */ | |
1537 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1538 | 16, /* bitsize */ | |
1539 | FALSE, /* pc_relative */ | |
1540 | 0, /* bitpos */ | |
1541 | complain_overflow_signed, /* complain_on_overflow */ | |
1542 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1543 | "R_PPC64_TPREL16", /* name */ | |
1544 | FALSE, /* partial_inplace */ | |
1545 | 0, /* src_mask */ | |
1546 | 0xffff, /* dst_mask */ | |
1547 | FALSE), /* pcrel_offset */ | |
1548 | ||
1549 | /* Like TPREL16, but no overflow. */ | |
1550 | HOWTO (R_PPC64_TPREL16_LO, | |
1551 | 0, /* rightshift */ | |
1552 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1553 | 16, /* bitsize */ | |
1554 | FALSE, /* pc_relative */ | |
1555 | 0, /* bitpos */ | |
1556 | complain_overflow_dont, /* complain_on_overflow */ | |
1557 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1558 | "R_PPC64_TPREL16_LO", /* name */ | |
1559 | FALSE, /* partial_inplace */ | |
1560 | 0, /* src_mask */ | |
1561 | 0xffff, /* dst_mask */ | |
1562 | FALSE), /* pcrel_offset */ | |
1563 | ||
1564 | /* Like TPREL16_LO, but next higher group of 16 bits. */ | |
1565 | HOWTO (R_PPC64_TPREL16_HI, | |
1566 | 16, /* rightshift */ | |
1567 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1568 | 16, /* bitsize */ | |
1569 | FALSE, /* pc_relative */ | |
1570 | 0, /* bitpos */ | |
f9c6b907 | 1571 | complain_overflow_signed, /* complain_on_overflow */ |
411e1bfb AM |
1572 | ppc64_elf_unhandled_reloc, /* special_function */ |
1573 | "R_PPC64_TPREL16_HI", /* name */ | |
1574 | FALSE, /* partial_inplace */ | |
1575 | 0, /* src_mask */ | |
1576 | 0xffff, /* dst_mask */ | |
1577 | FALSE), /* pcrel_offset */ | |
1578 | ||
1579 | /* Like TPREL16_HI, but adjust for low 16 bits. */ | |
1580 | HOWTO (R_PPC64_TPREL16_HA, | |
1581 | 16, /* rightshift */ | |
1582 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1583 | 16, /* bitsize */ | |
1584 | FALSE, /* pc_relative */ | |
1585 | 0, /* bitpos */ | |
f9c6b907 | 1586 | complain_overflow_signed, /* complain_on_overflow */ |
411e1bfb AM |
1587 | ppc64_elf_unhandled_reloc, /* special_function */ |
1588 | "R_PPC64_TPREL16_HA", /* name */ | |
1589 | FALSE, /* partial_inplace */ | |
1590 | 0, /* src_mask */ | |
1591 | 0xffff, /* dst_mask */ | |
1592 | FALSE), /* pcrel_offset */ | |
1593 | ||
1594 | /* Like TPREL16_HI, but next higher group of 16 bits. */ | |
1595 | HOWTO (R_PPC64_TPREL16_HIGHER, | |
1596 | 32, /* rightshift */ | |
1597 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1598 | 16, /* bitsize */ | |
1599 | FALSE, /* pc_relative */ | |
1600 | 0, /* bitpos */ | |
1601 | complain_overflow_dont, /* complain_on_overflow */ | |
1602 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1603 | "R_PPC64_TPREL16_HIGHER", /* name */ | |
1604 | FALSE, /* partial_inplace */ | |
1605 | 0, /* src_mask */ | |
1606 | 0xffff, /* dst_mask */ | |
1607 | FALSE), /* pcrel_offset */ | |
1608 | ||
1609 | /* Like TPREL16_HIGHER, but adjust for low 16 bits. */ | |
1610 | HOWTO (R_PPC64_TPREL16_HIGHERA, | |
1611 | 32, /* rightshift */ | |
1612 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1613 | 16, /* bitsize */ | |
1614 | FALSE, /* pc_relative */ | |
1615 | 0, /* bitpos */ | |
1616 | complain_overflow_dont, /* complain_on_overflow */ | |
1617 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1618 | "R_PPC64_TPREL16_HIGHERA", /* name */ | |
1619 | FALSE, /* partial_inplace */ | |
1620 | 0, /* src_mask */ | |
1621 | 0xffff, /* dst_mask */ | |
1622 | FALSE), /* pcrel_offset */ | |
1623 | ||
1624 | /* Like TPREL16_HIGHER, but next higher group of 16 bits. */ | |
1625 | HOWTO (R_PPC64_TPREL16_HIGHEST, | |
1626 | 48, /* rightshift */ | |
1627 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1628 | 16, /* bitsize */ | |
1629 | FALSE, /* pc_relative */ | |
1630 | 0, /* bitpos */ | |
1631 | complain_overflow_dont, /* complain_on_overflow */ | |
1632 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1633 | "R_PPC64_TPREL16_HIGHEST", /* name */ | |
1634 | FALSE, /* partial_inplace */ | |
1635 | 0, /* src_mask */ | |
1636 | 0xffff, /* dst_mask */ | |
1637 | FALSE), /* pcrel_offset */ | |
1638 | ||
1639 | /* Like TPREL16_HIGHEST, but adjust for low 16 bits. */ | |
1640 | HOWTO (R_PPC64_TPREL16_HIGHESTA, | |
1641 | 48, /* rightshift */ | |
1642 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1643 | 16, /* bitsize */ | |
1644 | FALSE, /* pc_relative */ | |
1645 | 0, /* bitpos */ | |
1646 | complain_overflow_dont, /* complain_on_overflow */ | |
1647 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1648 | "R_PPC64_TPREL16_HIGHESTA", /* name */ | |
1649 | FALSE, /* partial_inplace */ | |
1650 | 0, /* src_mask */ | |
1651 | 0xffff, /* dst_mask */ | |
1652 | FALSE), /* pcrel_offset */ | |
1653 | ||
1654 | /* Like TPREL16, but for insns with a DS field. */ | |
1655 | HOWTO (R_PPC64_TPREL16_DS, | |
1656 | 0, /* rightshift */ | |
1657 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1658 | 16, /* bitsize */ | |
1659 | FALSE, /* pc_relative */ | |
1660 | 0, /* bitpos */ | |
1661 | complain_overflow_signed, /* complain_on_overflow */ | |
1662 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1663 | "R_PPC64_TPREL16_DS", /* name */ | |
1664 | FALSE, /* partial_inplace */ | |
1665 | 0, /* src_mask */ | |
1666 | 0xfffc, /* dst_mask */ | |
1667 | FALSE), /* pcrel_offset */ | |
1668 | ||
1669 | /* Like TPREL16_DS, but no overflow. */ | |
1670 | HOWTO (R_PPC64_TPREL16_LO_DS, | |
1671 | 0, /* rightshift */ | |
1672 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1673 | 16, /* bitsize */ | |
1674 | FALSE, /* pc_relative */ | |
1675 | 0, /* bitpos */ | |
1676 | complain_overflow_dont, /* complain_on_overflow */ | |
1677 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1678 | "R_PPC64_TPREL16_LO_DS", /* name */ | |
1679 | FALSE, /* partial_inplace */ | |
1680 | 0, /* src_mask */ | |
1681 | 0xfffc, /* dst_mask */ | |
1682 | FALSE), /* pcrel_offset */ | |
1683 | ||
1684 | /* Allocates two contiguous entries in the GOT to hold a tls_index structure, | |
1685 | with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset | |
1686 | to the first entry relative to the TOC base (r2). */ | |
1687 | HOWTO (R_PPC64_GOT_TLSGD16, | |
1688 | 0, /* rightshift */ | |
1689 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1690 | 16, /* bitsize */ | |
1691 | FALSE, /* pc_relative */ | |
1692 | 0, /* bitpos */ | |
1693 | complain_overflow_signed, /* complain_on_overflow */ | |
1694 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1695 | "R_PPC64_GOT_TLSGD16", /* name */ | |
b34976b6 | 1696 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1697 | 0, /* src_mask */ |
1698 | 0xffff, /* dst_mask */ | |
b34976b6 | 1699 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1700 | |
411e1bfb AM |
1701 | /* Like GOT_TLSGD16, but no overflow. */ |
1702 | HOWTO (R_PPC64_GOT_TLSGD16_LO, | |
5bd4f169 AM |
1703 | 0, /* rightshift */ |
1704 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1705 | 16, /* bitsize */ | |
b34976b6 | 1706 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1707 | 0, /* bitpos */ |
1708 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 1709 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1710 | "R_PPC64_GOT_TLSGD16_LO", /* name */ |
b34976b6 | 1711 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1712 | 0, /* src_mask */ |
1713 | 0xffff, /* dst_mask */ | |
b34976b6 | 1714 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1715 | |
411e1bfb AM |
1716 | /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */ |
1717 | HOWTO (R_PPC64_GOT_TLSGD16_HI, | |
5bd4f169 AM |
1718 | 16, /* rightshift */ |
1719 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1720 | 16, /* bitsize */ | |
b34976b6 | 1721 | FALSE, /* pc_relative */ |
5bd4f169 | 1722 | 0, /* bitpos */ |
f9c6b907 | 1723 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 1724 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1725 | "R_PPC64_GOT_TLSGD16_HI", /* name */ |
b34976b6 | 1726 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1727 | 0, /* src_mask */ |
1728 | 0xffff, /* dst_mask */ | |
b34976b6 | 1729 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1730 | |
411e1bfb AM |
1731 | /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */ |
1732 | HOWTO (R_PPC64_GOT_TLSGD16_HA, | |
5bd4f169 AM |
1733 | 16, /* rightshift */ |
1734 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1735 | 16, /* bitsize */ | |
b34976b6 | 1736 | FALSE, /* pc_relative */ |
5bd4f169 | 1737 | 0, /* bitpos */ |
f9c6b907 | 1738 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 1739 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1740 | "R_PPC64_GOT_TLSGD16_HA", /* name */ |
b34976b6 | 1741 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1742 | 0, /* src_mask */ |
1743 | 0xffff, /* dst_mask */ | |
b34976b6 | 1744 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1745 | |
411e1bfb AM |
1746 | /* Allocates two contiguous entries in the GOT to hold a tls_index structure, |
1747 | with values (sym+add)@dtpmod and zero, and computes the offset to the | |
1748 | first entry relative to the TOC base (r2). */ | |
1749 | HOWTO (R_PPC64_GOT_TLSLD16, | |
5bd4f169 AM |
1750 | 0, /* rightshift */ |
1751 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1752 | 16, /* bitsize */ | |
b34976b6 | 1753 | FALSE, /* pc_relative */ |
5bd4f169 | 1754 | 0, /* bitpos */ |
411e1bfb AM |
1755 | complain_overflow_signed, /* complain_on_overflow */ |
1756 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1757 | "R_PPC64_GOT_TLSLD16", /* name */ | |
b34976b6 | 1758 | FALSE, /* partial_inplace */ |
d006db6c | 1759 | 0, /* src_mask */ |
411e1bfb | 1760 | 0xffff, /* dst_mask */ |
b34976b6 | 1761 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1762 | |
411e1bfb AM |
1763 | /* Like GOT_TLSLD16, but no overflow. */ |
1764 | HOWTO (R_PPC64_GOT_TLSLD16_LO, | |
5bd4f169 AM |
1765 | 0, /* rightshift */ |
1766 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1767 | 16, /* bitsize */ | |
b34976b6 | 1768 | FALSE, /* pc_relative */ |
5bd4f169 | 1769 | 0, /* bitpos */ |
411e1bfb AM |
1770 | complain_overflow_dont, /* complain_on_overflow */ |
1771 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1772 | "R_PPC64_GOT_TLSLD16_LO", /* name */ | |
b34976b6 | 1773 | FALSE, /* partial_inplace */ |
d006db6c | 1774 | 0, /* src_mask */ |
411e1bfb | 1775 | 0xffff, /* dst_mask */ |
b34976b6 | 1776 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1777 | |
411e1bfb AM |
1778 | /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */ |
1779 | HOWTO (R_PPC64_GOT_TLSLD16_HI, | |
1780 | 16, /* rightshift */ | |
5bd4f169 AM |
1781 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1782 | 16, /* bitsize */ | |
b34976b6 | 1783 | FALSE, /* pc_relative */ |
5bd4f169 | 1784 | 0, /* bitpos */ |
f9c6b907 | 1785 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 1786 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1787 | "R_PPC64_GOT_TLSLD16_HI", /* name */ |
b34976b6 | 1788 | FALSE, /* partial_inplace */ |
d006db6c | 1789 | 0, /* src_mask */ |
411e1bfb | 1790 | 0xffff, /* dst_mask */ |
b34976b6 | 1791 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1792 | |
411e1bfb AM |
1793 | /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */ |
1794 | HOWTO (R_PPC64_GOT_TLSLD16_HA, | |
1795 | 16, /* rightshift */ | |
5bd4f169 AM |
1796 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1797 | 16, /* bitsize */ | |
b34976b6 | 1798 | FALSE, /* pc_relative */ |
5bd4f169 | 1799 | 0, /* bitpos */ |
f9c6b907 | 1800 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 1801 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1802 | "R_PPC64_GOT_TLSLD16_HA", /* name */ |
b34976b6 | 1803 | FALSE, /* partial_inplace */ |
d006db6c | 1804 | 0, /* src_mask */ |
411e1bfb | 1805 | 0xffff, /* dst_mask */ |
b34976b6 | 1806 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1807 | |
411e1bfb AM |
1808 | /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes |
1809 | the offset to the entry relative to the TOC base (r2). */ | |
1810 | HOWTO (R_PPC64_GOT_DTPREL16_DS, | |
5bd4f169 AM |
1811 | 0, /* rightshift */ |
1812 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1813 | 16, /* bitsize */ | |
b34976b6 | 1814 | FALSE, /* pc_relative */ |
5bd4f169 | 1815 | 0, /* bitpos */ |
411e1bfb | 1816 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 1817 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1818 | "R_PPC64_GOT_DTPREL16_DS", /* name */ |
b34976b6 | 1819 | FALSE, /* partial_inplace */ |
d006db6c | 1820 | 0, /* src_mask */ |
5bd4f169 | 1821 | 0xfffc, /* dst_mask */ |
b34976b6 | 1822 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1823 | |
411e1bfb AM |
1824 | /* Like GOT_DTPREL16_DS, but no overflow. */ |
1825 | HOWTO (R_PPC64_GOT_DTPREL16_LO_DS, | |
5bd4f169 | 1826 | 0, /* rightshift */ |
c061c2d8 AM |
1827 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1828 | 16, /* bitsize */ | |
b34976b6 | 1829 | FALSE, /* pc_relative */ |
5bd4f169 | 1830 | 0, /* bitpos */ |
411e1bfb AM |
1831 | complain_overflow_dont, /* complain_on_overflow */ |
1832 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1833 | "R_PPC64_GOT_DTPREL16_LO_DS", /* name */ | |
b34976b6 | 1834 | FALSE, /* partial_inplace */ |
d006db6c | 1835 | 0, /* src_mask */ |
c061c2d8 | 1836 | 0xfffc, /* dst_mask */ |
b34976b6 | 1837 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1838 | |
411e1bfb AM |
1839 | /* Like GOT_DTPREL16_LO_DS, but next higher group of 16 bits. */ |
1840 | HOWTO (R_PPC64_GOT_DTPREL16_HI, | |
1841 | 16, /* rightshift */ | |
5bd4f169 AM |
1842 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1843 | 16, /* bitsize */ | |
b34976b6 | 1844 | FALSE, /* pc_relative */ |
5bd4f169 | 1845 | 0, /* bitpos */ |
f9c6b907 | 1846 | complain_overflow_signed, /* complain_on_overflow */ |
411e1bfb AM |
1847 | ppc64_elf_unhandled_reloc, /* special_function */ |
1848 | "R_PPC64_GOT_DTPREL16_HI", /* name */ | |
b34976b6 | 1849 | FALSE, /* partial_inplace */ |
d006db6c | 1850 | 0, /* src_mask */ |
411e1bfb | 1851 | 0xffff, /* dst_mask */ |
b34976b6 | 1852 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1853 | |
411e1bfb AM |
1854 | /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */ |
1855 | HOWTO (R_PPC64_GOT_DTPREL16_HA, | |
1856 | 16, /* rightshift */ | |
1857 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1858 | 16, /* bitsize */ | |
1859 | FALSE, /* pc_relative */ | |
1860 | 0, /* bitpos */ | |
f9c6b907 | 1861 | complain_overflow_signed, /* complain_on_overflow */ |
411e1bfb AM |
1862 | ppc64_elf_unhandled_reloc, /* special_function */ |
1863 | "R_PPC64_GOT_DTPREL16_HA", /* name */ | |
1864 | FALSE, /* partial_inplace */ | |
1865 | 0, /* src_mask */ | |
1866 | 0xffff, /* dst_mask */ | |
1867 | FALSE), /* pcrel_offset */ | |
1868 | ||
1869 | /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the | |
1870 | offset to the entry relative to the TOC base (r2). */ | |
1871 | HOWTO (R_PPC64_GOT_TPREL16_DS, | |
5bd4f169 AM |
1872 | 0, /* rightshift */ |
1873 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1874 | 16, /* bitsize */ | |
b34976b6 | 1875 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1876 | 0, /* bitpos */ |
1877 | complain_overflow_signed, /* complain_on_overflow */ | |
411e1bfb AM |
1878 | ppc64_elf_unhandled_reloc, /* special_function */ |
1879 | "R_PPC64_GOT_TPREL16_DS", /* name */ | |
b34976b6 | 1880 | FALSE, /* partial_inplace */ |
d006db6c | 1881 | 0, /* src_mask */ |
ad8e1ba5 | 1882 | 0xfffc, /* dst_mask */ |
b34976b6 | 1883 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1884 | |
411e1bfb AM |
1885 | /* Like GOT_TPREL16_DS, but no overflow. */ |
1886 | HOWTO (R_PPC64_GOT_TPREL16_LO_DS, | |
5bd4f169 AM |
1887 | 0, /* rightshift */ |
1888 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1889 | 16, /* bitsize */ | |
b34976b6 | 1890 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1891 | 0, /* bitpos */ |
1892 | complain_overflow_dont, /* complain_on_overflow */ | |
411e1bfb AM |
1893 | ppc64_elf_unhandled_reloc, /* special_function */ |
1894 | "R_PPC64_GOT_TPREL16_LO_DS", /* name */ | |
b34976b6 | 1895 | FALSE, /* partial_inplace */ |
d006db6c | 1896 | 0, /* src_mask */ |
ad8e1ba5 | 1897 | 0xfffc, /* dst_mask */ |
b34976b6 | 1898 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1899 | |
411e1bfb AM |
1900 | /* Like GOT_TPREL16_LO_DS, but next higher group of 16 bits. */ |
1901 | HOWTO (R_PPC64_GOT_TPREL16_HI, | |
1902 | 16, /* rightshift */ | |
5bd4f169 AM |
1903 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1904 | 16, /* bitsize */ | |
b34976b6 | 1905 | FALSE, /* pc_relative */ |
5bd4f169 | 1906 | 0, /* bitpos */ |
f9c6b907 | 1907 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 1908 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1909 | "R_PPC64_GOT_TPREL16_HI", /* name */ |
b34976b6 | 1910 | FALSE, /* partial_inplace */ |
d006db6c | 1911 | 0, /* src_mask */ |
411e1bfb | 1912 | 0xffff, /* dst_mask */ |
b34976b6 | 1913 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1914 | |
411e1bfb AM |
1915 | /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */ |
1916 | HOWTO (R_PPC64_GOT_TPREL16_HA, | |
1917 | 16, /* rightshift */ | |
5bd4f169 AM |
1918 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1919 | 16, /* bitsize */ | |
b34976b6 | 1920 | FALSE, /* pc_relative */ |
5bd4f169 | 1921 | 0, /* bitpos */ |
f9c6b907 | 1922 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 1923 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1924 | "R_PPC64_GOT_TPREL16_HA", /* name */ |
b34976b6 | 1925 | FALSE, /* partial_inplace */ |
d006db6c | 1926 | 0, /* src_mask */ |
411e1bfb | 1927 | 0xffff, /* dst_mask */ |
b34976b6 | 1928 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1929 | |
25f23106 AM |
1930 | HOWTO (R_PPC64_JMP_IREL, /* type */ |
1931 | 0, /* rightshift */ | |
1932 | 0, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
1933 | 0, /* bitsize */ | |
1934 | FALSE, /* pc_relative */ | |
1935 | 0, /* bitpos */ | |
1936 | complain_overflow_dont, /* complain_on_overflow */ | |
1937 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1938 | "R_PPC64_JMP_IREL", /* name */ | |
1939 | FALSE, /* partial_inplace */ | |
1940 | 0, /* src_mask */ | |
1941 | 0, /* dst_mask */ | |
1942 | FALSE), /* pcrel_offset */ | |
1943 | ||
e054468f AM |
1944 | HOWTO (R_PPC64_IRELATIVE, /* type */ |
1945 | 0, /* rightshift */ | |
1946 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
1947 | 64, /* bitsize */ | |
1948 | FALSE, /* pc_relative */ | |
1949 | 0, /* bitpos */ | |
1950 | complain_overflow_dont, /* complain_on_overflow */ | |
1951 | bfd_elf_generic_reloc, /* special_function */ | |
1952 | "R_PPC64_IRELATIVE", /* name */ | |
1953 | FALSE, /* partial_inplace */ | |
1954 | 0, /* src_mask */ | |
1955 | ONES (64), /* dst_mask */ | |
1956 | FALSE), /* pcrel_offset */ | |
1957 | ||
25f23106 AM |
1958 | /* A 16 bit relative relocation. */ |
1959 | HOWTO (R_PPC64_REL16, /* type */ | |
1960 | 0, /* rightshift */ | |
1961 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1962 | 16, /* bitsize */ | |
1963 | TRUE, /* pc_relative */ | |
1964 | 0, /* bitpos */ | |
b80eed39 | 1965 | complain_overflow_signed, /* complain_on_overflow */ |
25f23106 AM |
1966 | bfd_elf_generic_reloc, /* special_function */ |
1967 | "R_PPC64_REL16", /* name */ | |
1968 | FALSE, /* partial_inplace */ | |
1969 | 0, /* src_mask */ | |
1970 | 0xffff, /* dst_mask */ | |
1971 | TRUE), /* pcrel_offset */ | |
1972 | ||
1973 | /* A 16 bit relative relocation without overflow. */ | |
1974 | HOWTO (R_PPC64_REL16_LO, /* type */ | |
1975 | 0, /* rightshift */ | |
1976 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1977 | 16, /* bitsize */ | |
1978 | TRUE, /* pc_relative */ | |
1979 | 0, /* bitpos */ | |
1980 | complain_overflow_dont,/* complain_on_overflow */ | |
1981 | bfd_elf_generic_reloc, /* special_function */ | |
1982 | "R_PPC64_REL16_LO", /* name */ | |
1983 | FALSE, /* partial_inplace */ | |
1984 | 0, /* src_mask */ | |
1985 | 0xffff, /* dst_mask */ | |
1986 | TRUE), /* pcrel_offset */ | |
1987 | ||
1988 | /* The high order 16 bits of a relative address. */ | |
1989 | HOWTO (R_PPC64_REL16_HI, /* type */ | |
1990 | 16, /* rightshift */ | |
1991 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1992 | 16, /* bitsize */ | |
1993 | TRUE, /* pc_relative */ | |
1994 | 0, /* bitpos */ | |
f9c6b907 | 1995 | complain_overflow_signed, /* complain_on_overflow */ |
25f23106 AM |
1996 | bfd_elf_generic_reloc, /* special_function */ |
1997 | "R_PPC64_REL16_HI", /* name */ | |
1998 | FALSE, /* partial_inplace */ | |
1999 | 0, /* src_mask */ | |
2000 | 0xffff, /* dst_mask */ | |
2001 | TRUE), /* pcrel_offset */ | |
2002 | ||
2003 | /* The high order 16 bits of a relative address, plus 1 if the contents of | |
2004 | the low 16 bits, treated as a signed number, is negative. */ | |
2005 | HOWTO (R_PPC64_REL16_HA, /* type */ | |
2006 | 16, /* rightshift */ | |
2007 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
2008 | 16, /* bitsize */ | |
2009 | TRUE, /* pc_relative */ | |
2010 | 0, /* bitpos */ | |
f9c6b907 | 2011 | complain_overflow_signed, /* complain_on_overflow */ |
25f23106 AM |
2012 | ppc64_elf_ha_reloc, /* special_function */ |
2013 | "R_PPC64_REL16_HA", /* name */ | |
2014 | FALSE, /* partial_inplace */ | |
2015 | 0, /* src_mask */ | |
2016 | 0xffff, /* dst_mask */ | |
2017 | TRUE), /* pcrel_offset */ | |
2018 | ||
f9c6b907 AM |
2019 | /* Like R_PPC64_ADDR16_HI, but no overflow. */ |
2020 | HOWTO (R_PPC64_ADDR16_HIGH, /* type */ | |
2021 | 16, /* rightshift */ | |
2022 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
2023 | 16, /* bitsize */ | |
2024 | FALSE, /* pc_relative */ | |
2025 | 0, /* bitpos */ | |
2026 | complain_overflow_dont, /* complain_on_overflow */ | |
2027 | bfd_elf_generic_reloc, /* special_function */ | |
2028 | "R_PPC64_ADDR16_HIGH", /* name */ | |
2029 | FALSE, /* partial_inplace */ | |
2030 | 0, /* src_mask */ | |
2031 | 0xffff, /* dst_mask */ | |
2032 | FALSE), /* pcrel_offset */ | |
2033 | ||
2034 | /* Like R_PPC64_ADDR16_HA, but no overflow. */ | |
2035 | HOWTO (R_PPC64_ADDR16_HIGHA, /* type */ | |
2036 | 16, /* rightshift */ | |
2037 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
2038 | 16, /* bitsize */ | |
2039 | FALSE, /* pc_relative */ | |
2040 | 0, /* bitpos */ | |
2041 | complain_overflow_dont, /* complain_on_overflow */ | |
2042 | ppc64_elf_ha_reloc, /* special_function */ | |
2043 | "R_PPC64_ADDR16_HIGHA", /* name */ | |
2044 | FALSE, /* partial_inplace */ | |
2045 | 0, /* src_mask */ | |
2046 | 0xffff, /* dst_mask */ | |
2047 | FALSE), /* pcrel_offset */ | |
2048 | ||
2049 | /* Like R_PPC64_DTPREL16_HI, but no overflow. */ | |
2050 | HOWTO (R_PPC64_DTPREL16_HIGH, | |
2051 | 16, /* rightshift */ | |
2052 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
2053 | 16, /* bitsize */ | |
2054 | FALSE, /* pc_relative */ | |
2055 | 0, /* bitpos */ | |
2056 | complain_overflow_dont, /* complain_on_overflow */ | |
2057 | ppc64_elf_unhandled_reloc, /* special_function */ | |
2058 | "R_PPC64_DTPREL16_HIGH", /* name */ | |
2059 | FALSE, /* partial_inplace */ | |
2060 | 0, /* src_mask */ | |
2061 | 0xffff, /* dst_mask */ | |
2062 | FALSE), /* pcrel_offset */ | |
2063 | ||
2064 | /* Like R_PPC64_DTPREL16_HA, but no overflow. */ | |
2065 | HOWTO (R_PPC64_DTPREL16_HIGHA, | |
2066 | 16, /* rightshift */ | |
2067 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
2068 | 16, /* bitsize */ | |
2069 | FALSE, /* pc_relative */ | |
2070 | 0, /* bitpos */ | |
2071 | complain_overflow_dont, /* complain_on_overflow */ | |
2072 | ppc64_elf_unhandled_reloc, /* special_function */ | |
2073 | "R_PPC64_DTPREL16_HIGHA", /* name */ | |
2074 | FALSE, /* partial_inplace */ | |
2075 | 0, /* src_mask */ | |
2076 | 0xffff, /* dst_mask */ | |
2077 | FALSE), /* pcrel_offset */ | |
2078 | ||
2079 | /* Like R_PPC64_TPREL16_HI, but no overflow. */ | |
2080 | HOWTO (R_PPC64_TPREL16_HIGH, | |
2081 | 16, /* rightshift */ | |
2082 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
2083 | 16, /* bitsize */ | |
2084 | FALSE, /* pc_relative */ | |
2085 | 0, /* bitpos */ | |
2086 | complain_overflow_dont, /* complain_on_overflow */ | |
2087 | ppc64_elf_unhandled_reloc, /* special_function */ | |
2088 | "R_PPC64_TPREL16_HIGH", /* name */ | |
2089 | FALSE, /* partial_inplace */ | |
2090 | 0, /* src_mask */ | |
2091 | 0xffff, /* dst_mask */ | |
2092 | FALSE), /* pcrel_offset */ | |
2093 | ||
2094 | /* Like R_PPC64_TPREL16_HA, but no overflow. */ | |
2095 | HOWTO (R_PPC64_TPREL16_HIGHA, | |
2096 | 16, /* rightshift */ | |
2097 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
2098 | 16, /* bitsize */ | |
2099 | FALSE, /* pc_relative */ | |
2100 | 0, /* bitpos */ | |
2101 | complain_overflow_dont, /* complain_on_overflow */ | |
2102 | ppc64_elf_unhandled_reloc, /* special_function */ | |
2103 | "R_PPC64_TPREL16_HIGHA", /* name */ | |
2104 | FALSE, /* partial_inplace */ | |
2105 | 0, /* src_mask */ | |
2106 | 0xffff, /* dst_mask */ | |
2107 | FALSE), /* pcrel_offset */ | |
2108 | ||
45965137 AM |
2109 | /* Like ADDR64, but use local entry point of function. */ |
2110 | HOWTO (R_PPC64_ADDR64_LOCAL, /* type */ | |
2111 | 0, /* rightshift */ | |
2112 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
2113 | 64, /* bitsize */ | |
2114 | FALSE, /* pc_relative */ | |
2115 | 0, /* bitpos */ | |
2116 | complain_overflow_dont, /* complain_on_overflow */ | |
2117 | bfd_elf_generic_reloc, /* special_function */ | |
2118 | "R_PPC64_ADDR64_LOCAL", /* name */ | |
2119 | FALSE, /* partial_inplace */ | |
2120 | 0, /* src_mask */ | |
2121 | ONES (64), /* dst_mask */ | |
2122 | FALSE), /* pcrel_offset */ | |
2123 | ||
5bd4f169 AM |
2124 | /* GNU extension to record C++ vtable hierarchy. */ |
2125 | HOWTO (R_PPC64_GNU_VTINHERIT, /* type */ | |
2126 | 0, /* rightshift */ | |
2127 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
2128 | 0, /* bitsize */ | |
b34976b6 | 2129 | FALSE, /* pc_relative */ |
5bd4f169 AM |
2130 | 0, /* bitpos */ |
2131 | complain_overflow_dont, /* complain_on_overflow */ | |
2132 | NULL, /* special_function */ | |
2133 | "R_PPC64_GNU_VTINHERIT", /* name */ | |
b34976b6 | 2134 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
2135 | 0, /* src_mask */ |
2136 | 0, /* dst_mask */ | |
b34976b6 | 2137 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
2138 | |
2139 | /* GNU extension to record C++ vtable member usage. */ | |
2140 | HOWTO (R_PPC64_GNU_VTENTRY, /* type */ | |
2141 | 0, /* rightshift */ | |
2142 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
2143 | 0, /* bitsize */ | |
b34976b6 | 2144 | FALSE, /* pc_relative */ |
5bd4f169 AM |
2145 | 0, /* bitpos */ |
2146 | complain_overflow_dont, /* complain_on_overflow */ | |
2147 | NULL, /* special_function */ | |
2148 | "R_PPC64_GNU_VTENTRY", /* name */ | |
b34976b6 | 2149 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
2150 | 0, /* src_mask */ |
2151 | 0, /* dst_mask */ | |
b34976b6 | 2152 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
2153 | }; |
2154 | ||
2155 | \f | |
2156 | /* Initialize the ppc64_elf_howto_table, so that linear accesses can | |
2157 | be done. */ | |
2158 | ||
2159 | static void | |
4ce794b7 | 2160 | ppc_howto_init (void) |
5bd4f169 AM |
2161 | { |
2162 | unsigned int i, type; | |
2163 | ||
2164 | for (i = 0; | |
2165 | i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]); | |
2166 | i++) | |
2167 | { | |
2168 | type = ppc64_elf_howto_raw[i].type; | |
2169 | BFD_ASSERT (type < (sizeof (ppc64_elf_howto_table) | |
2170 | / sizeof (ppc64_elf_howto_table[0]))); | |
2171 | ppc64_elf_howto_table[type] = &ppc64_elf_howto_raw[i]; | |
2172 | } | |
2173 | } | |
2174 | ||
2175 | static reloc_howto_type * | |
4ce794b7 AM |
2176 | ppc64_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, |
2177 | bfd_reloc_code_real_type code) | |
5bd4f169 | 2178 | { |
411e1bfb | 2179 | enum elf_ppc64_reloc_type r = R_PPC64_NONE; |
5bd4f169 AM |
2180 | |
2181 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) | |
2182 | /* Initialize howto table if needed. */ | |
2183 | ppc_howto_init (); | |
2184 | ||
4ce794b7 | 2185 | switch (code) |
5bd4f169 AM |
2186 | { |
2187 | default: | |
4ce794b7 | 2188 | return NULL; |
5bd4f169 | 2189 | |
411e1bfb AM |
2190 | case BFD_RELOC_NONE: r = R_PPC64_NONE; |
2191 | break; | |
2192 | case BFD_RELOC_32: r = R_PPC64_ADDR32; | |
2193 | break; | |
2194 | case BFD_RELOC_PPC_BA26: r = R_PPC64_ADDR24; | |
2195 | break; | |
2196 | case BFD_RELOC_16: r = R_PPC64_ADDR16; | |
2197 | break; | |
2198 | case BFD_RELOC_LO16: r = R_PPC64_ADDR16_LO; | |
2199 | break; | |
2200 | case BFD_RELOC_HI16: r = R_PPC64_ADDR16_HI; | |
2201 | break; | |
f9c6b907 AM |
2202 | case BFD_RELOC_PPC64_ADDR16_HIGH: r = R_PPC64_ADDR16_HIGH; |
2203 | break; | |
411e1bfb | 2204 | case BFD_RELOC_HI16_S: r = R_PPC64_ADDR16_HA; |
5bd4f169 | 2205 | break; |
f9c6b907 AM |
2206 | case BFD_RELOC_PPC64_ADDR16_HIGHA: r = R_PPC64_ADDR16_HIGHA; |
2207 | break; | |
411e1bfb | 2208 | case BFD_RELOC_PPC_BA16: r = R_PPC64_ADDR14; |
5bd4f169 | 2209 | break; |
411e1bfb | 2210 | case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC64_ADDR14_BRTAKEN; |
5bd4f169 | 2211 | break; |
411e1bfb | 2212 | case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC64_ADDR14_BRNTAKEN; |
5bd4f169 | 2213 | break; |
411e1bfb | 2214 | case BFD_RELOC_PPC_B26: r = R_PPC64_REL24; |
5bd4f169 | 2215 | break; |
411e1bfb | 2216 | case BFD_RELOC_PPC_B16: r = R_PPC64_REL14; |
5bd4f169 | 2217 | break; |
411e1bfb | 2218 | case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC64_REL14_BRTAKEN; |
5bd4f169 | 2219 | break; |
411e1bfb | 2220 | case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC64_REL14_BRNTAKEN; |
5bd4f169 | 2221 | break; |
411e1bfb | 2222 | case BFD_RELOC_16_GOTOFF: r = R_PPC64_GOT16; |
5bd4f169 | 2223 | break; |
411e1bfb | 2224 | case BFD_RELOC_LO16_GOTOFF: r = R_PPC64_GOT16_LO; |
5bd4f169 | 2225 | break; |
411e1bfb | 2226 | case BFD_RELOC_HI16_GOTOFF: r = R_PPC64_GOT16_HI; |
5bd4f169 | 2227 | break; |
411e1bfb | 2228 | case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC64_GOT16_HA; |
5bd4f169 | 2229 | break; |
411e1bfb | 2230 | case BFD_RELOC_PPC_COPY: r = R_PPC64_COPY; |
5bd4f169 | 2231 | break; |
411e1bfb | 2232 | case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC64_GLOB_DAT; |
5bd4f169 | 2233 | break; |
411e1bfb | 2234 | case BFD_RELOC_32_PCREL: r = R_PPC64_REL32; |
5bd4f169 | 2235 | break; |
411e1bfb | 2236 | case BFD_RELOC_32_PLTOFF: r = R_PPC64_PLT32; |
5bd4f169 | 2237 | break; |
411e1bfb | 2238 | case BFD_RELOC_32_PLT_PCREL: r = R_PPC64_PLTREL32; |
5bd4f169 | 2239 | break; |
411e1bfb | 2240 | case BFD_RELOC_LO16_PLTOFF: r = R_PPC64_PLT16_LO; |
5bd4f169 | 2241 | break; |
411e1bfb | 2242 | case BFD_RELOC_HI16_PLTOFF: r = R_PPC64_PLT16_HI; |
5bd4f169 | 2243 | break; |
411e1bfb | 2244 | case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC64_PLT16_HA; |
5bd4f169 | 2245 | break; |
411e1bfb | 2246 | case BFD_RELOC_16_BASEREL: r = R_PPC64_SECTOFF; |
5bd4f169 | 2247 | break; |
411e1bfb | 2248 | case BFD_RELOC_LO16_BASEREL: r = R_PPC64_SECTOFF_LO; |
5bd4f169 | 2249 | break; |
411e1bfb | 2250 | case BFD_RELOC_HI16_BASEREL: r = R_PPC64_SECTOFF_HI; |
5bd4f169 | 2251 | break; |
411e1bfb | 2252 | case BFD_RELOC_HI16_S_BASEREL: r = R_PPC64_SECTOFF_HA; |
5bd4f169 | 2253 | break; |
411e1bfb | 2254 | case BFD_RELOC_CTOR: r = R_PPC64_ADDR64; |
5bd4f169 | 2255 | break; |
411e1bfb | 2256 | case BFD_RELOC_64: r = R_PPC64_ADDR64; |
5bd4f169 | 2257 | break; |
411e1bfb | 2258 | case BFD_RELOC_PPC64_HIGHER: r = R_PPC64_ADDR16_HIGHER; |
5bd4f169 | 2259 | break; |
411e1bfb | 2260 | case BFD_RELOC_PPC64_HIGHER_S: r = R_PPC64_ADDR16_HIGHERA; |
5bd4f169 | 2261 | break; |
411e1bfb | 2262 | case BFD_RELOC_PPC64_HIGHEST: r = R_PPC64_ADDR16_HIGHEST; |
5bd4f169 | 2263 | break; |
411e1bfb | 2264 | case BFD_RELOC_PPC64_HIGHEST_S: r = R_PPC64_ADDR16_HIGHESTA; |
5bd4f169 | 2265 | break; |
411e1bfb | 2266 | case BFD_RELOC_64_PCREL: r = R_PPC64_REL64; |
5bd4f169 | 2267 | break; |
411e1bfb | 2268 | case BFD_RELOC_64_PLTOFF: r = R_PPC64_PLT64; |
5bd4f169 | 2269 | break; |
411e1bfb | 2270 | case BFD_RELOC_64_PLT_PCREL: r = R_PPC64_PLTREL64; |
5bd4f169 | 2271 | break; |
411e1bfb | 2272 | case BFD_RELOC_PPC_TOC16: r = R_PPC64_TOC16; |
5bd4f169 | 2273 | break; |
411e1bfb | 2274 | case BFD_RELOC_PPC64_TOC16_LO: r = R_PPC64_TOC16_LO; |
5bd4f169 | 2275 | break; |
411e1bfb | 2276 | case BFD_RELOC_PPC64_TOC16_HI: r = R_PPC64_TOC16_HI; |
5bd4f169 | 2277 | break; |
411e1bfb | 2278 | case BFD_RELOC_PPC64_TOC16_HA: r = R_PPC64_TOC16_HA; |
5bd4f169 | 2279 | break; |
411e1bfb | 2280 | case BFD_RELOC_PPC64_TOC: r = R_PPC64_TOC; |
5bd4f169 | 2281 | break; |
411e1bfb | 2282 | case BFD_RELOC_PPC64_PLTGOT16: r = R_PPC64_PLTGOT16; |
5bd4f169 | 2283 | break; |
411e1bfb | 2284 | case BFD_RELOC_PPC64_PLTGOT16_LO: r = R_PPC64_PLTGOT16_LO; |
5bd4f169 | 2285 | break; |
411e1bfb | 2286 | case BFD_RELOC_PPC64_PLTGOT16_HI: r = R_PPC64_PLTGOT16_HI; |
5bd4f169 | 2287 | break; |
411e1bfb | 2288 | case BFD_RELOC_PPC64_PLTGOT16_HA: r = R_PPC64_PLTGOT16_HA; |
5bd4f169 | 2289 | break; |
411e1bfb | 2290 | case BFD_RELOC_PPC64_ADDR16_DS: r = R_PPC64_ADDR16_DS; |
5bd4f169 | 2291 | break; |
411e1bfb | 2292 | case BFD_RELOC_PPC64_ADDR16_LO_DS: r = R_PPC64_ADDR16_LO_DS; |
5bd4f169 | 2293 | break; |
411e1bfb | 2294 | case BFD_RELOC_PPC64_GOT16_DS: r = R_PPC64_GOT16_DS; |
5bd4f169 | 2295 | break; |
411e1bfb | 2296 | case BFD_RELOC_PPC64_GOT16_LO_DS: r = R_PPC64_GOT16_LO_DS; |
5bd4f169 | 2297 | break; |
411e1bfb | 2298 | case BFD_RELOC_PPC64_PLT16_LO_DS: r = R_PPC64_PLT16_LO_DS; |
5bd4f169 | 2299 | break; |
411e1bfb | 2300 | case BFD_RELOC_PPC64_SECTOFF_DS: r = R_PPC64_SECTOFF_DS; |
5bd4f169 | 2301 | break; |
411e1bfb | 2302 | case BFD_RELOC_PPC64_SECTOFF_LO_DS: r = R_PPC64_SECTOFF_LO_DS; |
5bd4f169 | 2303 | break; |
411e1bfb | 2304 | case BFD_RELOC_PPC64_TOC16_DS: r = R_PPC64_TOC16_DS; |
5bd4f169 | 2305 | break; |
411e1bfb | 2306 | case BFD_RELOC_PPC64_TOC16_LO_DS: r = R_PPC64_TOC16_LO_DS; |
5bd4f169 | 2307 | break; |
411e1bfb | 2308 | case BFD_RELOC_PPC64_PLTGOT16_DS: r = R_PPC64_PLTGOT16_DS; |
5bd4f169 | 2309 | break; |
411e1bfb | 2310 | case BFD_RELOC_PPC64_PLTGOT16_LO_DS: r = R_PPC64_PLTGOT16_LO_DS; |
5bd4f169 | 2311 | break; |
411e1bfb | 2312 | case BFD_RELOC_PPC_TLS: r = R_PPC64_TLS; |
5bd4f169 | 2313 | break; |
727fc41e AM |
2314 | case BFD_RELOC_PPC_TLSGD: r = R_PPC64_TLSGD; |
2315 | break; | |
2316 | case BFD_RELOC_PPC_TLSLD: r = R_PPC64_TLSLD; | |
2317 | break; | |
411e1bfb | 2318 | case BFD_RELOC_PPC_DTPMOD: r = R_PPC64_DTPMOD64; |
5bd4f169 | 2319 | break; |
411e1bfb | 2320 | case BFD_RELOC_PPC_TPREL16: r = R_PPC64_TPREL16; |
5bd4f169 | 2321 | break; |
411e1bfb | 2322 | case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC64_TPREL16_LO; |
5bd4f169 | 2323 | break; |
411e1bfb | 2324 | case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC64_TPREL16_HI; |
5bd4f169 | 2325 | break; |
f9c6b907 AM |
2326 | case BFD_RELOC_PPC64_TPREL16_HIGH: r = R_PPC64_TPREL16_HIGH; |
2327 | break; | |
411e1bfb | 2328 | case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC64_TPREL16_HA; |
5bd4f169 | 2329 | break; |
f9c6b907 AM |
2330 | case BFD_RELOC_PPC64_TPREL16_HIGHA: r = R_PPC64_TPREL16_HIGHA; |
2331 | break; | |
411e1bfb | 2332 | case BFD_RELOC_PPC_TPREL: r = R_PPC64_TPREL64; |
5bd4f169 | 2333 | break; |
411e1bfb AM |
2334 | case BFD_RELOC_PPC_DTPREL16: r = R_PPC64_DTPREL16; |
2335 | break; | |
2336 | case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC64_DTPREL16_LO; | |
2337 | break; | |
2338 | case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC64_DTPREL16_HI; | |
2339 | break; | |
f9c6b907 AM |
2340 | case BFD_RELOC_PPC64_DTPREL16_HIGH: r = R_PPC64_DTPREL16_HIGH; |
2341 | break; | |
411e1bfb AM |
2342 | case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC64_DTPREL16_HA; |
2343 | break; | |
f9c6b907 AM |
2344 | case BFD_RELOC_PPC64_DTPREL16_HIGHA: r = R_PPC64_DTPREL16_HIGHA; |
2345 | break; | |
411e1bfb AM |
2346 | case BFD_RELOC_PPC_DTPREL: r = R_PPC64_DTPREL64; |
2347 | break; | |
2348 | case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC64_GOT_TLSGD16; | |
2349 | break; | |
2350 | case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC64_GOT_TLSGD16_LO; | |
2351 | break; | |
2352 | case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC64_GOT_TLSGD16_HI; | |
2353 | break; | |
2354 | case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC64_GOT_TLSGD16_HA; | |
2355 | break; | |
2356 | case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC64_GOT_TLSLD16; | |
2357 | break; | |
2358 | case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC64_GOT_TLSLD16_LO; | |
2359 | break; | |
2360 | case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC64_GOT_TLSLD16_HI; | |
2361 | break; | |
2362 | case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC64_GOT_TLSLD16_HA; | |
2363 | break; | |
2364 | case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC64_GOT_TPREL16_DS; | |
2365 | break; | |
2366 | case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC64_GOT_TPREL16_LO_DS; | |
2367 | break; | |
2368 | case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC64_GOT_TPREL16_HI; | |
2369 | break; | |
2370 | case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC64_GOT_TPREL16_HA; | |
2371 | break; | |
2372 | case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC64_GOT_DTPREL16_DS; | |
2373 | break; | |
2374 | case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC64_GOT_DTPREL16_LO_DS; | |
2375 | break; | |
2376 | case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC64_GOT_DTPREL16_HI; | |
2377 | break; | |
2378 | case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC64_GOT_DTPREL16_HA; | |
2379 | break; | |
2380 | case BFD_RELOC_PPC64_TPREL16_DS: r = R_PPC64_TPREL16_DS; | |
2381 | break; | |
2382 | case BFD_RELOC_PPC64_TPREL16_LO_DS: r = R_PPC64_TPREL16_LO_DS; | |
2383 | break; | |
2384 | case BFD_RELOC_PPC64_TPREL16_HIGHER: r = R_PPC64_TPREL16_HIGHER; | |
2385 | break; | |
2386 | case BFD_RELOC_PPC64_TPREL16_HIGHERA: r = R_PPC64_TPREL16_HIGHERA; | |
2387 | break; | |
2388 | case BFD_RELOC_PPC64_TPREL16_HIGHEST: r = R_PPC64_TPREL16_HIGHEST; | |
2389 | break; | |
2390 | case BFD_RELOC_PPC64_TPREL16_HIGHESTA: r = R_PPC64_TPREL16_HIGHESTA; | |
2391 | break; | |
2392 | case BFD_RELOC_PPC64_DTPREL16_DS: r = R_PPC64_DTPREL16_DS; | |
2393 | break; | |
2394 | case BFD_RELOC_PPC64_DTPREL16_LO_DS: r = R_PPC64_DTPREL16_LO_DS; | |
2395 | break; | |
2396 | case BFD_RELOC_PPC64_DTPREL16_HIGHER: r = R_PPC64_DTPREL16_HIGHER; | |
2397 | break; | |
2398 | case BFD_RELOC_PPC64_DTPREL16_HIGHERA: r = R_PPC64_DTPREL16_HIGHERA; | |
2399 | break; | |
2400 | case BFD_RELOC_PPC64_DTPREL16_HIGHEST: r = R_PPC64_DTPREL16_HIGHEST; | |
2401 | break; | |
2402 | case BFD_RELOC_PPC64_DTPREL16_HIGHESTA: r = R_PPC64_DTPREL16_HIGHESTA; | |
2403 | break; | |
25f23106 AM |
2404 | case BFD_RELOC_16_PCREL: r = R_PPC64_REL16; |
2405 | break; | |
2406 | case BFD_RELOC_LO16_PCREL: r = R_PPC64_REL16_LO; | |
2407 | break; | |
2408 | case BFD_RELOC_HI16_PCREL: r = R_PPC64_REL16_HI; | |
2409 | break; | |
2410 | case BFD_RELOC_HI16_S_PCREL: r = R_PPC64_REL16_HA; | |
2411 | break; | |
45965137 AM |
2412 | case BFD_RELOC_PPC64_ADDR64_LOCAL: r = R_PPC64_ADDR64_LOCAL; |
2413 | break; | |
411e1bfb AM |
2414 | case BFD_RELOC_VTABLE_INHERIT: r = R_PPC64_GNU_VTINHERIT; |
2415 | break; | |
2416 | case BFD_RELOC_VTABLE_ENTRY: r = R_PPC64_GNU_VTENTRY; | |
5bd4f169 AM |
2417 | break; |
2418 | } | |
2419 | ||
4ce794b7 | 2420 | return ppc64_elf_howto_table[r]; |
5bd4f169 AM |
2421 | }; |
2422 | ||
157090f7 AM |
2423 | static reloc_howto_type * |
2424 | ppc64_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, | |
2425 | const char *r_name) | |
2426 | { | |
2427 | unsigned int i; | |
2428 | ||
2429 | for (i = 0; | |
2430 | i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]); | |
2431 | i++) | |
2432 | if (ppc64_elf_howto_raw[i].name != NULL | |
2433 | && strcasecmp (ppc64_elf_howto_raw[i].name, r_name) == 0) | |
2434 | return &ppc64_elf_howto_raw[i]; | |
2435 | ||
2436 | return NULL; | |
2437 | } | |
2438 | ||
5bd4f169 AM |
2439 | /* Set the howto pointer for a PowerPC ELF reloc. */ |
2440 | ||
2441 | static void | |
4ce794b7 AM |
2442 | ppc64_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr, |
2443 | Elf_Internal_Rela *dst) | |
5bd4f169 | 2444 | { |
65f38f15 AM |
2445 | unsigned int type; |
2446 | ||
ef60b7ff | 2447 | /* Initialize howto table if needed. */ |
5bd4f169 | 2448 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) |
5bd4f169 AM |
2449 | ppc_howto_init (); |
2450 | ||
65f38f15 | 2451 | type = ELF64_R_TYPE (dst->r_info); |
d0fb9a8d JJ |
2452 | if (type >= (sizeof (ppc64_elf_howto_table) |
2453 | / sizeof (ppc64_elf_howto_table[0]))) | |
2454 | { | |
2455 | (*_bfd_error_handler) (_("%B: invalid relocation type %d"), | |
3ec2b351 NC |
2456 | abfd, (int) type); |
2457 | type = R_PPC64_NONE; | |
d0fb9a8d | 2458 | } |
65f38f15 | 2459 | cache_ptr->howto = ppc64_elf_howto_table[type]; |
5bd4f169 AM |
2460 | } |
2461 | ||
04c9666a | 2462 | /* Handle the R_PPC64_ADDR16_HA and similar relocs. */ |
5bd4f169 AM |
2463 | |
2464 | static bfd_reloc_status_type | |
4ce794b7 AM |
2465 | ppc64_elf_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2466 | void *data, asection *input_section, | |
2467 | bfd *output_bfd, char **error_message) | |
5bd4f169 | 2468 | { |
805fc799 AM |
2469 | /* If this is a relocatable link (output_bfd test tells us), just |
2470 | call the generic function. Any adjustment will be done at final | |
2471 | link time. */ | |
2472 | if (output_bfd != NULL) | |
cedb70c5 | 2473 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2474 | input_section, output_bfd, error_message); |
2475 | ||
2476 | /* Adjust the addend for sign extension of the low 16 bits. | |
2477 | We won't actually be using the low 16 bits, so trashing them | |
2478 | doesn't matter. */ | |
2479 | reloc_entry->addend += 0x8000; | |
2480 | return bfd_reloc_continue; | |
2481 | } | |
5bd4f169 | 2482 | |
2441e016 AM |
2483 | static bfd_reloc_status_type |
2484 | ppc64_elf_branch_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, | |
2485 | void *data, asection *input_section, | |
2486 | bfd *output_bfd, char **error_message) | |
2487 | { | |
2488 | if (output_bfd != NULL) | |
2489 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, | |
2490 | input_section, output_bfd, error_message); | |
2491 | ||
699733f6 AM |
2492 | if (strcmp (symbol->section->name, ".opd") == 0 |
2493 | && (symbol->section->owner->flags & DYNAMIC) == 0) | |
2441e016 AM |
2494 | { |
2495 | bfd_vma dest = opd_entry_value (symbol->section, | |
2496 | symbol->value + reloc_entry->addend, | |
aef36ac1 | 2497 | NULL, NULL, FALSE); |
2441e016 AM |
2498 | if (dest != (bfd_vma) -1) |
2499 | reloc_entry->addend = dest - (symbol->value | |
2500 | + symbol->section->output_section->vma | |
2501 | + symbol->section->output_offset); | |
2502 | } | |
810d4e75 AM |
2503 | else |
2504 | { | |
2505 | elf_symbol_type *elfsym = (elf_symbol_type *) symbol; | |
2506 | ||
2507 | if (symbol->section->owner != abfd | |
2508 | && abiversion (symbol->section->owner) >= 2) | |
2509 | { | |
2510 | unsigned int i; | |
2511 | ||
2512 | for (i = 0; i < symbol->section->owner->symcount; ++i) | |
2513 | { | |
2514 | asymbol *symdef = symbol->section->owner->outsymbols[i]; | |
2515 | ||
2516 | if (strcmp (symdef->name, symbol->name) == 0) | |
2517 | { | |
2518 | elfsym = (elf_symbol_type *) symdef; | |
2519 | break; | |
2520 | } | |
2521 | } | |
2522 | } | |
2523 | reloc_entry->addend | |
2524 | += PPC64_LOCAL_ENTRY_OFFSET (elfsym->internal_elf_sym.st_other); | |
2525 | } | |
2441e016 AM |
2526 | return bfd_reloc_continue; |
2527 | } | |
2528 | ||
805fc799 | 2529 | static bfd_reloc_status_type |
4ce794b7 AM |
2530 | ppc64_elf_brtaken_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2531 | void *data, asection *input_section, | |
2532 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2533 | { |
2534 | long insn; | |
04c9666a | 2535 | enum elf_ppc64_reloc_type r_type; |
805fc799 | 2536 | bfd_size_type octets; |
794e51c0 AM |
2537 | /* Assume 'at' branch hints. */ |
2538 | bfd_boolean is_isa_v2 = TRUE; | |
805fc799 AM |
2539 | |
2540 | /* If this is a relocatable link (output_bfd test tells us), just | |
2541 | call the generic function. Any adjustment will be done at final | |
2542 | link time. */ | |
5bd4f169 | 2543 | if (output_bfd != NULL) |
cedb70c5 | 2544 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2545 | input_section, output_bfd, error_message); |
2546 | ||
2547 | octets = reloc_entry->address * bfd_octets_per_byte (abfd); | |
2548 | insn = bfd_get_32 (abfd, (bfd_byte *) data + octets); | |
2549 | insn &= ~(0x01 << 21); | |
4ce794b7 | 2550 | r_type = reloc_entry->howto->type; |
805fc799 AM |
2551 | if (r_type == R_PPC64_ADDR14_BRTAKEN |
2552 | || r_type == R_PPC64_REL14_BRTAKEN) | |
cedb70c5 | 2553 | insn |= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */ |
805fc799 | 2554 | |
794e51c0 | 2555 | if (is_isa_v2) |
5bd4f169 | 2556 | { |
805fc799 AM |
2557 | /* Set 'a' bit. This is 0b00010 in BO field for branch |
2558 | on CR(BI) insns (BO == 001at or 011at), and 0b01000 | |
2559 | for branch on CTR insns (BO == 1a00t or 1a01t). */ | |
2560 | if ((insn & (0x14 << 21)) == (0x04 << 21)) | |
2561 | insn |= 0x02 << 21; | |
2562 | else if ((insn & (0x14 << 21)) == (0x10 << 21)) | |
2563 | insn |= 0x08 << 21; | |
2564 | else | |
2441e016 | 2565 | goto out; |
5bd4f169 | 2566 | } |
805fc799 AM |
2567 | else |
2568 | { | |
2569 | bfd_vma target = 0; | |
2570 | bfd_vma from; | |
5bd4f169 | 2571 | |
805fc799 AM |
2572 | if (!bfd_is_com_section (symbol->section)) |
2573 | target = symbol->value; | |
2574 | target += symbol->section->output_section->vma; | |
2575 | target += symbol->section->output_offset; | |
2576 | target += reloc_entry->addend; | |
5bd4f169 | 2577 | |
805fc799 AM |
2578 | from = (reloc_entry->address |
2579 | + input_section->output_offset | |
2580 | + input_section->output_section->vma); | |
5bd4f169 | 2581 | |
805fc799 AM |
2582 | /* Invert 'y' bit if not the default. */ |
2583 | if ((bfd_signed_vma) (target - from) < 0) | |
2584 | insn ^= 0x01 << 21; | |
2585 | } | |
4ce794b7 | 2586 | bfd_put_32 (abfd, insn, (bfd_byte *) data + octets); |
2441e016 AM |
2587 | out: |
2588 | return ppc64_elf_branch_reloc (abfd, reloc_entry, symbol, data, | |
2589 | input_section, output_bfd, error_message); | |
805fc799 | 2590 | } |
5bd4f169 | 2591 | |
805fc799 | 2592 | static bfd_reloc_status_type |
4ce794b7 AM |
2593 | ppc64_elf_sectoff_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2594 | void *data, asection *input_section, | |
2595 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2596 | { |
2597 | /* If this is a relocatable link (output_bfd test tells us), just | |
2598 | call the generic function. Any adjustment will be done at final | |
2599 | link time. */ | |
2600 | if (output_bfd != NULL) | |
cedb70c5 | 2601 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 | 2602 | input_section, output_bfd, error_message); |
5bd4f169 | 2603 | |
805fc799 AM |
2604 | /* Subtract the symbol section base address. */ |
2605 | reloc_entry->addend -= symbol->section->output_section->vma; | |
5bd4f169 AM |
2606 | return bfd_reloc_continue; |
2607 | } | |
2608 | ||
805fc799 | 2609 | static bfd_reloc_status_type |
4ce794b7 AM |
2610 | ppc64_elf_sectoff_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2611 | void *data, asection *input_section, | |
2612 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2613 | { |
2614 | /* If this is a relocatable link (output_bfd test tells us), just | |
2615 | call the generic function. Any adjustment will be done at final | |
2616 | link time. */ | |
2617 | if (output_bfd != NULL) | |
cedb70c5 | 2618 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2619 | input_section, output_bfd, error_message); |
2620 | ||
2621 | /* Subtract the symbol section base address. */ | |
2622 | reloc_entry->addend -= symbol->section->output_section->vma; | |
2623 | ||
2624 | /* Adjust the addend for sign extension of the low 16 bits. */ | |
2625 | reloc_entry->addend += 0x8000; | |
2626 | return bfd_reloc_continue; | |
2627 | } | |
2628 | ||
2629 | static bfd_reloc_status_type | |
4ce794b7 AM |
2630 | ppc64_elf_toc_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2631 | void *data, asection *input_section, | |
2632 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2633 | { |
2634 | bfd_vma TOCstart; | |
2635 | ||
2636 | /* If this is a relocatable link (output_bfd test tells us), just | |
2637 | call the generic function. Any adjustment will be done at final | |
2638 | link time. */ | |
2639 | if (output_bfd != NULL) | |
cedb70c5 | 2640 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2641 | input_section, output_bfd, error_message); |
2642 | ||
2643 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
2644 | if (TOCstart == 0) | |
1c865ab2 | 2645 | TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner); |
805fc799 AM |
2646 | |
2647 | /* Subtract the TOC base address. */ | |
2648 | reloc_entry->addend -= TOCstart + TOC_BASE_OFF; | |
2649 | return bfd_reloc_continue; | |
2650 | } | |
2651 | ||
2652 | static bfd_reloc_status_type | |
4ce794b7 AM |
2653 | ppc64_elf_toc_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2654 | void *data, asection *input_section, | |
2655 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2656 | { |
2657 | bfd_vma TOCstart; | |
2658 | ||
2659 | /* If this is a relocatable link (output_bfd test tells us), just | |
2660 | call the generic function. Any adjustment will be done at final | |
2661 | link time. */ | |
2662 | if (output_bfd != NULL) | |
cedb70c5 | 2663 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2664 | input_section, output_bfd, error_message); |
2665 | ||
2666 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
2667 | if (TOCstart == 0) | |
1c865ab2 | 2668 | TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner); |
805fc799 AM |
2669 | |
2670 | /* Subtract the TOC base address. */ | |
2671 | reloc_entry->addend -= TOCstart + TOC_BASE_OFF; | |
2672 | ||
2673 | /* Adjust the addend for sign extension of the low 16 bits. */ | |
2674 | reloc_entry->addend += 0x8000; | |
2675 | return bfd_reloc_continue; | |
2676 | } | |
2677 | ||
2678 | static bfd_reloc_status_type | |
4ce794b7 AM |
2679 | ppc64_elf_toc64_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2680 | void *data, asection *input_section, | |
2681 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2682 | { |
2683 | bfd_vma TOCstart; | |
2684 | bfd_size_type octets; | |
2685 | ||
2686 | /* If this is a relocatable link (output_bfd test tells us), just | |
2687 | call the generic function. Any adjustment will be done at final | |
2688 | link time. */ | |
2689 | if (output_bfd != NULL) | |
cedb70c5 | 2690 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2691 | input_section, output_bfd, error_message); |
2692 | ||
2693 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
2694 | if (TOCstart == 0) | |
1c865ab2 | 2695 | TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner); |
805fc799 AM |
2696 | |
2697 | octets = reloc_entry->address * bfd_octets_per_byte (abfd); | |
2698 | bfd_put_64 (abfd, TOCstart + TOC_BASE_OFF, (bfd_byte *) data + octets); | |
2699 | return bfd_reloc_ok; | |
2700 | } | |
2701 | ||
2702 | static bfd_reloc_status_type | |
4ce794b7 AM |
2703 | ppc64_elf_unhandled_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2704 | void *data, asection *input_section, | |
2705 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2706 | { |
2707 | /* If this is a relocatable link (output_bfd test tells us), just | |
2708 | call the generic function. Any adjustment will be done at final | |
2709 | link time. */ | |
2710 | if (output_bfd != NULL) | |
cedb70c5 | 2711 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2712 | input_section, output_bfd, error_message); |
2713 | ||
2714 | if (error_message != NULL) | |
2715 | { | |
2716 | static char buf[60]; | |
2717 | sprintf (buf, "generic linker can't handle %s", | |
2718 | reloc_entry->howto->name); | |
2719 | *error_message = buf; | |
2720 | } | |
2721 | return bfd_reloc_dangerous; | |
2722 | } | |
2723 | ||
927be08e AM |
2724 | /* Track GOT entries needed for a given symbol. We might need more |
2725 | than one got entry per symbol. */ | |
2726 | struct got_entry | |
2727 | { | |
2728 | struct got_entry *next; | |
2729 | ||
2730 | /* The symbol addend that we'll be placing in the GOT. */ | |
2731 | bfd_vma addend; | |
2732 | ||
2733 | /* Unlike other ELF targets, we use separate GOT entries for the same | |
2734 | symbol referenced from different input files. This is to support | |
2735 | automatic multiple TOC/GOT sections, where the TOC base can vary | |
2736 | from one input file to another. After partitioning into TOC groups | |
2737 | we merge entries within the group. | |
2738 | ||
2739 | Point to the BFD owning this GOT entry. */ | |
2740 | bfd *owner; | |
2741 | ||
2742 | /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD, | |
2743 | TLS_TPREL or TLS_DTPREL for tls entries. */ | |
f961d9dd | 2744 | unsigned char tls_type; |
927be08e AM |
2745 | |
2746 | /* Non-zero if got.ent points to real entry. */ | |
f961d9dd | 2747 | unsigned char is_indirect; |
927be08e AM |
2748 | |
2749 | /* Reference count until size_dynamic_sections, GOT offset thereafter. */ | |
2750 | union | |
2751 | { | |
2752 | bfd_signed_vma refcount; | |
2753 | bfd_vma offset; | |
2754 | struct got_entry *ent; | |
2755 | } got; | |
2756 | }; | |
2757 | ||
2758 | /* The same for PLT. */ | |
2759 | struct plt_entry | |
2760 | { | |
2761 | struct plt_entry *next; | |
2762 | ||
2763 | bfd_vma addend; | |
2764 | ||
2765 | union | |
2766 | { | |
2767 | bfd_signed_vma refcount; | |
2768 | bfd_vma offset; | |
2769 | } plt; | |
2770 | }; | |
2771 | ||
e717da7e AM |
2772 | struct ppc64_elf_obj_tdata |
2773 | { | |
2774 | struct elf_obj_tdata elf; | |
2775 | ||
2776 | /* Shortcuts to dynamic linker sections. */ | |
2777 | asection *got; | |
2778 | asection *relgot; | |
2779 | ||
b3fac117 AM |
2780 | /* Used during garbage collection. We attach global symbols defined |
2781 | on removed .opd entries to this section so that the sym is removed. */ | |
2782 | asection *deleted_section; | |
81688140 | 2783 | |
927be08e | 2784 | /* TLS local dynamic got entry handling. Support for multiple GOT |
e717da7e | 2785 | sections means we potentially need one of these for each input bfd. */ |
927be08e | 2786 | struct got_entry tlsld_got; |
8860955f | 2787 | |
729eabd5 AM |
2788 | union { |
2789 | /* A copy of relocs before they are modified for --emit-relocs. */ | |
2790 | Elf_Internal_Rela *relocs; | |
2791 | ||
2792 | /* Section contents. */ | |
2793 | bfd_byte *contents; | |
2794 | } opd; | |
d77c8a4b AM |
2795 | |
2796 | /* Nonzero if this bfd has small toc/got relocs, ie. that expect | |
2797 | the reloc to be in the range -32768 to 32767. */ | |
98528052 AM |
2798 | unsigned int has_small_toc_reloc : 1; |
2799 | ||
560c8763 AM |
2800 | /* Set if toc/got ha relocs detected not using r2, or lo reloc |
2801 | instruction not one we handle. */ | |
2802 | unsigned int unexpected_toc_insn : 1; | |
e717da7e AM |
2803 | }; |
2804 | ||
2805 | #define ppc64_elf_tdata(bfd) \ | |
2806 | ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any) | |
2807 | ||
2808 | #define ppc64_tlsld_got(bfd) \ | |
2809 | (&ppc64_elf_tdata (bfd)->tlsld_got) | |
2810 | ||
0c8d6e5c AM |
2811 | #define is_ppc64_elf(bfd) \ |
2812 | (bfd_get_flavour (bfd) == bfd_target_elf_flavour \ | |
4dfe6ac6 | 2813 | && elf_object_id (bfd) == PPC64_ELF_DATA) |
0c8d6e5c | 2814 | |
e717da7e AM |
2815 | /* Override the generic function because we store some extras. */ |
2816 | ||
2817 | static bfd_boolean | |
2818 | ppc64_elf_mkobject (bfd *abfd) | |
2819 | { | |
0ffa91dd | 2820 | return bfd_elf_allocate_object (abfd, sizeof (struct ppc64_elf_obj_tdata), |
4dfe6ac6 | 2821 | PPC64_ELF_DATA); |
e717da7e AM |
2822 | } |
2823 | ||
feee612b AM |
2824 | /* Fix bad default arch selected for a 64 bit input bfd when the |
2825 | default is 32 bit. */ | |
2826 | ||
b34976b6 | 2827 | static bfd_boolean |
4ce794b7 | 2828 | ppc64_elf_object_p (bfd *abfd) |
feee612b AM |
2829 | { |
2830 | if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 32) | |
2831 | { | |
2832 | Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd); | |
2833 | ||
2834 | if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS64) | |
2835 | { | |
2836 | /* Relies on arch after 32 bit default being 64 bit default. */ | |
2837 | abfd->arch_info = abfd->arch_info->next; | |
2838 | BFD_ASSERT (abfd->arch_info->bits_per_word == 64); | |
2839 | } | |
2840 | } | |
b34976b6 | 2841 | return TRUE; |
feee612b AM |
2842 | } |
2843 | ||
d37c89e5 AM |
2844 | /* Support for core dump NOTE sections. */ |
2845 | ||
2846 | static bfd_boolean | |
2847 | ppc64_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) | |
2848 | { | |
eea6121a | 2849 | size_t offset, size; |
d37c89e5 AM |
2850 | |
2851 | if (note->descsz != 504) | |
2852 | return FALSE; | |
2853 | ||
2854 | /* pr_cursig */ | |
228e534f | 2855 | elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12); |
d37c89e5 AM |
2856 | |
2857 | /* pr_pid */ | |
228e534f | 2858 | elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 32); |
d37c89e5 AM |
2859 | |
2860 | /* pr_reg */ | |
2861 | offset = 112; | |
eea6121a | 2862 | size = 384; |
d37c89e5 AM |
2863 | |
2864 | /* Make a ".reg/999" section. */ | |
2865 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", | |
eea6121a | 2866 | size, note->descpos + offset); |
d37c89e5 AM |
2867 | } |
2868 | ||
2869 | static bfd_boolean | |
2870 | ppc64_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) | |
2871 | { | |
2872 | if (note->descsz != 136) | |
2873 | return FALSE; | |
2874 | ||
228e534f | 2875 | elf_tdata (abfd)->core->pid |
bc989cdc | 2876 | = bfd_get_32 (abfd, note->descdata + 24); |
228e534f | 2877 | elf_tdata (abfd)->core->program |
d37c89e5 | 2878 | = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16); |
228e534f | 2879 | elf_tdata (abfd)->core->command |
d37c89e5 AM |
2880 | = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80); |
2881 | ||
2882 | return TRUE; | |
2883 | } | |
2884 | ||
183e98be AM |
2885 | static char * |
2886 | ppc64_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type, | |
2887 | ...) | |
2888 | { | |
2889 | switch (note_type) | |
2890 | { | |
2891 | default: | |
2892 | return NULL; | |
2893 | ||
2894 | case NT_PRPSINFO: | |
2895 | { | |
2896 | char data[136]; | |
2897 | va_list ap; | |
2898 | ||
2899 | va_start (ap, note_type); | |
75cd47ed | 2900 | memset (data, 0, sizeof (data)); |
183e98be AM |
2901 | strncpy (data + 40, va_arg (ap, const char *), 16); |
2902 | strncpy (data + 56, va_arg (ap, const char *), 80); | |
2903 | va_end (ap); | |
2904 | return elfcore_write_note (abfd, buf, bufsiz, | |
2905 | "CORE", note_type, data, sizeof (data)); | |
2906 | } | |
2907 | ||
2908 | case NT_PRSTATUS: | |
2909 | { | |
2910 | char data[504]; | |
2911 | va_list ap; | |
2912 | long pid; | |
2913 | int cursig; | |
2914 | const void *greg; | |
2915 | ||
2916 | va_start (ap, note_type); | |
2917 | memset (data, 0, 112); | |
2918 | pid = va_arg (ap, long); | |
2919 | bfd_put_32 (abfd, pid, data + 32); | |
2920 | cursig = va_arg (ap, int); | |
2921 | bfd_put_16 (abfd, cursig, data + 12); | |
2922 | greg = va_arg (ap, const void *); | |
2923 | memcpy (data + 112, greg, 384); | |
2924 | memset (data + 496, 0, 8); | |
2925 | va_end (ap); | |
2926 | return elfcore_write_note (abfd, buf, bufsiz, | |
2927 | "CORE", note_type, data, sizeof (data)); | |
2928 | } | |
2929 | } | |
2930 | } | |
2931 | ||
5d35169e AM |
2932 | /* Add extra PPC sections. */ |
2933 | ||
b35d266b | 2934 | static const struct bfd_elf_special_section ppc64_elf_special_sections[]= |
7f4d3958 | 2935 | { |
0112cd26 NC |
2936 | { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, 0 }, |
2937 | { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, | |
2938 | { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
2939 | { STRING_COMMA_LEN (".toc"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
2940 | { STRING_COMMA_LEN (".toc1"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
2941 | { STRING_COMMA_LEN (".tocbss"), 0, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, | |
2942 | { NULL, 0, 0, 0, 0 } | |
5d35169e AM |
2943 | }; |
2944 | ||
7c8fe5c4 AM |
2945 | enum _ppc64_sec_type { |
2946 | sec_normal = 0, | |
2947 | sec_opd = 1, | |
2948 | sec_toc = 2 | |
2949 | }; | |
2950 | ||
f0abc2a1 AM |
2951 | struct _ppc64_elf_section_data |
2952 | { | |
2953 | struct bfd_elf_section_data elf; | |
411e1bfb | 2954 | |
f0abc2a1 AM |
2955 | union |
2956 | { | |
51aecdc5 AM |
2957 | /* An array with one entry for each opd function descriptor, |
2958 | and some spares since opd entries may be either 16 or 24 bytes. */ | |
2959 | #define OPD_NDX(OFF) ((OFF) >> 4) | |
74f0fb50 AM |
2960 | struct _opd_sec_data |
2961 | { | |
2962 | /* Points to the function code section for local opd entries. */ | |
2963 | asection **func_sec; | |
2964 | ||
2965 | /* After editing .opd, adjust references to opd local syms. */ | |
2966 | long *adjust; | |
2967 | } opd; | |
7c8fe5c4 | 2968 | |
3a71aa26 AM |
2969 | /* An array for toc sections, indexed by offset/8. */ |
2970 | struct _toc_sec_data | |
2971 | { | |
2972 | /* Specifies the relocation symbol index used at a given toc offset. */ | |
2973 | unsigned *symndx; | |
2974 | ||
2975 | /* And the relocation addend. */ | |
2976 | bfd_vma *add; | |
2977 | } toc; | |
7c8fe5c4 AM |
2978 | } u; |
2979 | ||
2980 | enum _ppc64_sec_type sec_type:2; | |
411e1bfb | 2981 | |
7c8fe5c4 AM |
2982 | /* Flag set when small branches are detected. Used to |
2983 | select suitable defaults for the stub group size. */ | |
2984 | unsigned int has_14bit_branch:1; | |
f0abc2a1 AM |
2985 | }; |
2986 | ||
2987 | #define ppc64_elf_section_data(sec) \ | |
411e1bfb | 2988 | ((struct _ppc64_elf_section_data *) elf_section_data (sec)) |
f0abc2a1 AM |
2989 | |
2990 | static bfd_boolean | |
4ce794b7 | 2991 | ppc64_elf_new_section_hook (bfd *abfd, asection *sec) |
f0abc2a1 | 2992 | { |
f592407e AM |
2993 | if (!sec->used_by_bfd) |
2994 | { | |
2995 | struct _ppc64_elf_section_data *sdata; | |
2996 | bfd_size_type amt = sizeof (*sdata); | |
f0abc2a1 | 2997 | |
f592407e AM |
2998 | sdata = bfd_zalloc (abfd, amt); |
2999 | if (sdata == NULL) | |
3000 | return FALSE; | |
3001 | sec->used_by_bfd = sdata; | |
3002 | } | |
f0abc2a1 AM |
3003 | |
3004 | return _bfd_elf_new_section_hook (abfd, sec); | |
3005 | } | |
4025353c | 3006 | |
74f0fb50 | 3007 | static struct _opd_sec_data * |
4025353c AM |
3008 | get_opd_info (asection * sec) |
3009 | { | |
3010 | if (sec != NULL | |
3011 | && ppc64_elf_section_data (sec) != NULL | |
7c8fe5c4 | 3012 | && ppc64_elf_section_data (sec)->sec_type == sec_opd) |
74f0fb50 | 3013 | return &ppc64_elf_section_data (sec)->u.opd; |
4025353c AM |
3014 | return NULL; |
3015 | } | |
90e3cdf2 JJ |
3016 | \f |
3017 | /* Parameters for the qsort hook. */ | |
90e3cdf2 JJ |
3018 | static bfd_boolean synthetic_relocatable; |
3019 | ||
699733f6 | 3020 | /* qsort comparison function for ppc64_elf_get_synthetic_symtab. */ |
90e3cdf2 JJ |
3021 | |
3022 | static int | |
3023 | compare_symbols (const void *ap, const void *bp) | |
3024 | { | |
3025 | const asymbol *a = * (const asymbol **) ap; | |
3026 | const asymbol *b = * (const asymbol **) bp; | |
3027 | ||
699733f6 AM |
3028 | /* Section symbols first. */ |
3029 | if ((a->flags & BSF_SECTION_SYM) && !(b->flags & BSF_SECTION_SYM)) | |
90e3cdf2 | 3030 | return -1; |
699733f6 | 3031 | if (!(a->flags & BSF_SECTION_SYM) && (b->flags & BSF_SECTION_SYM)) |
90e3cdf2 JJ |
3032 | return 1; |
3033 | ||
699733f6 | 3034 | /* then .opd symbols. */ |
ffcfec52 AM |
3035 | if (strcmp (a->section->name, ".opd") == 0 |
3036 | && strcmp (b->section->name, ".opd") != 0) | |
90e3cdf2 | 3037 | return -1; |
ffcfec52 AM |
3038 | if (strcmp (a->section->name, ".opd") != 0 |
3039 | && strcmp (b->section->name, ".opd") == 0) | |
90e3cdf2 JJ |
3040 | return 1; |
3041 | ||
699733f6 | 3042 | /* then other code symbols. */ |
90e3cdf2 JJ |
3043 | if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) |
3044 | == (SEC_CODE | SEC_ALLOC) | |
3045 | && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
3046 | != (SEC_CODE | SEC_ALLOC)) | |
3047 | return -1; | |
3048 | ||
3049 | if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
3050 | != (SEC_CODE | SEC_ALLOC) | |
3051 | && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
3052 | == (SEC_CODE | SEC_ALLOC)) | |
3053 | return 1; | |
3054 | ||
3055 | if (synthetic_relocatable) | |
3056 | { | |
3057 | if (a->section->id < b->section->id) | |
3058 | return -1; | |
3059 | ||
3060 | if (a->section->id > b->section->id) | |
3061 | return 1; | |
3062 | } | |
3063 | ||
3064 | if (a->value + a->section->vma < b->value + b->section->vma) | |
3065 | return -1; | |
3066 | ||
3067 | if (a->value + a->section->vma > b->value + b->section->vma) | |
3068 | return 1; | |
3069 | ||
4d35a0aa AM |
3070 | /* For syms with the same value, prefer strong dynamic global function |
3071 | syms over other syms. */ | |
3072 | if ((a->flags & BSF_GLOBAL) != 0 && (b->flags & BSF_GLOBAL) == 0) | |
3073 | return -1; | |
3074 | ||
3075 | if ((a->flags & BSF_GLOBAL) == 0 && (b->flags & BSF_GLOBAL) != 0) | |
3076 | return 1; | |
3077 | ||
3078 | if ((a->flags & BSF_FUNCTION) != 0 && (b->flags & BSF_FUNCTION) == 0) | |
3079 | return -1; | |
3080 | ||
3081 | if ((a->flags & BSF_FUNCTION) == 0 && (b->flags & BSF_FUNCTION) != 0) | |
3082 | return 1; | |
3083 | ||
3084 | if ((a->flags & BSF_WEAK) == 0 && (b->flags & BSF_WEAK) != 0) | |
3085 | return -1; | |
3086 | ||
3087 | if ((a->flags & BSF_WEAK) != 0 && (b->flags & BSF_WEAK) == 0) | |
3088 | return 1; | |
3089 | ||
3090 | if ((a->flags & BSF_DYNAMIC) != 0 && (b->flags & BSF_DYNAMIC) == 0) | |
3091 | return -1; | |
3092 | ||
3093 | if ((a->flags & BSF_DYNAMIC) == 0 && (b->flags & BSF_DYNAMIC) != 0) | |
3094 | return 1; | |
3095 | ||
90e3cdf2 JJ |
3096 | return 0; |
3097 | } | |
3098 | ||
699733f6 | 3099 | /* Search SYMS for a symbol of the given VALUE. */ |
90e3cdf2 | 3100 | |
699733f6 AM |
3101 | static asymbol * |
3102 | sym_exists_at (asymbol **syms, long lo, long hi, int id, bfd_vma value) | |
90e3cdf2 | 3103 | { |
699733f6 | 3104 | long mid; |
90e3cdf2 | 3105 | |
699733f6 AM |
3106 | if (id == -1) |
3107 | { | |
3108 | while (lo < hi) | |
3109 | { | |
3110 | mid = (lo + hi) >> 1; | |
3111 | if (syms[mid]->value + syms[mid]->section->vma < value) | |
3112 | lo = mid + 1; | |
3113 | else if (syms[mid]->value + syms[mid]->section->vma > value) | |
3114 | hi = mid; | |
3115 | else | |
3116 | return syms[mid]; | |
3117 | } | |
3118 | } | |
3119 | else | |
3120 | { | |
3121 | while (lo < hi) | |
3122 | { | |
3123 | mid = (lo + hi) >> 1; | |
3124 | if (syms[mid]->section->id < id) | |
3125 | lo = mid + 1; | |
3126 | else if (syms[mid]->section->id > id) | |
3127 | hi = mid; | |
3128 | else if (syms[mid]->value < value) | |
3129 | lo = mid + 1; | |
3130 | else if (syms[mid]->value > value) | |
3131 | hi = mid; | |
3132 | else | |
3133 | return syms[mid]; | |
3134 | } | |
3135 | } | |
3136 | return NULL; | |
90e3cdf2 JJ |
3137 | } |
3138 | ||
468392fb AM |
3139 | static bfd_boolean |
3140 | section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr) | |
3141 | { | |
3142 | bfd_vma vma = *(bfd_vma *) ptr; | |
3143 | return ((section->flags & SEC_ALLOC) != 0 | |
3144 | && section->vma <= vma | |
3145 | && vma < section->vma + section->size); | |
3146 | } | |
3147 | ||
699733f6 | 3148 | /* Create synthetic symbols, effectively restoring "dot-symbol" function |
468392fb | 3149 | entry syms. Also generate @plt symbols for the glink branch table. */ |
90e3cdf2 JJ |
3150 | |
3151 | static long | |
a7535cf3 AM |
3152 | ppc64_elf_get_synthetic_symtab (bfd *abfd, |
3153 | long static_count, asymbol **static_syms, | |
3154 | long dyn_count, asymbol **dyn_syms, | |
c9727e01 | 3155 | asymbol **ret) |
90e3cdf2 JJ |
3156 | { |
3157 | asymbol *s; | |
699733f6 AM |
3158 | long i; |
3159 | long count; | |
90e3cdf2 | 3160 | char *names; |
a7535cf3 | 3161 | long symcount, codesecsym, codesecsymend, secsymend, opdsymend; |
ee67d69a | 3162 | asection *opd = NULL; |
90e3cdf2 | 3163 | bfd_boolean relocatable = (abfd->flags & (EXEC_P | DYNAMIC)) == 0; |
a7535cf3 | 3164 | asymbol **syms; |
ee67d69a | 3165 | int abi = abiversion (abfd); |
90e3cdf2 JJ |
3166 | |
3167 | *ret = NULL; | |
3168 | ||
ee67d69a AM |
3169 | if (abi < 2) |
3170 | { | |
3171 | opd = bfd_get_section_by_name (abfd, ".opd"); | |
3172 | if (opd == NULL && abi == 1) | |
3173 | return 0; | |
3174 | } | |
90e3cdf2 | 3175 | |
a7535cf3 | 3176 | symcount = static_count; |
c9727e01 | 3177 | if (!relocatable) |
a7535cf3 | 3178 | symcount += dyn_count; |
90e3cdf2 | 3179 | if (symcount == 0) |
c9727e01 | 3180 | return 0; |
90e3cdf2 | 3181 | |
a7535cf3 AM |
3182 | syms = bfd_malloc ((symcount + 1) * sizeof (*syms)); |
3183 | if (syms == NULL) | |
7356fed5 | 3184 | return -1; |
a7535cf3 AM |
3185 | |
3186 | if (!relocatable && static_count != 0 && dyn_count != 0) | |
3187 | { | |
3188 | /* Use both symbol tables. */ | |
3189 | memcpy (syms, static_syms, static_count * sizeof (*syms)); | |
3190 | memcpy (syms + static_count, dyn_syms, (dyn_count + 1) * sizeof (*syms)); | |
3191 | } | |
3192 | else if (!relocatable && static_count == 0) | |
3193 | memcpy (syms, dyn_syms, (symcount + 1) * sizeof (*syms)); | |
3194 | else | |
3195 | memcpy (syms, static_syms, (symcount + 1) * sizeof (*syms)); | |
3196 | ||
90e3cdf2 | 3197 | synthetic_relocatable = relocatable; |
595da8c5 | 3198 | qsort (syms, symcount, sizeof (*syms), compare_symbols); |
90e3cdf2 | 3199 | |
c9727e01 AM |
3200 | if (!relocatable && symcount > 1) |
3201 | { | |
3202 | long j; | |
3203 | /* Trim duplicate syms, since we may have merged the normal and | |
3204 | dynamic symbols. Actually, we only care about syms that have | |
3b36f7e6 | 3205 | different values, so trim any with the same value. */ |
c9727e01 AM |
3206 | for (i = 1, j = 1; i < symcount; ++i) |
3207 | if (syms[i - 1]->value + syms[i - 1]->section->vma | |
3208 | != syms[i]->value + syms[i]->section->vma) | |
3209 | syms[j++] = syms[i]; | |
3210 | symcount = j; | |
3211 | } | |
3212 | ||
699733f6 | 3213 | i = 0; |
ffcfec52 | 3214 | if (strcmp (syms[i]->section->name, ".opd") == 0) |
699733f6 AM |
3215 | ++i; |
3216 | codesecsym = i; | |
90e3cdf2 | 3217 | |
699733f6 AM |
3218 | for (; i < symcount; ++i) |
3219 | if (((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
3220 | != (SEC_CODE | SEC_ALLOC)) | |
3221 | || (syms[i]->flags & BSF_SECTION_SYM) == 0) | |
3222 | break; | |
3223 | codesecsymend = i; | |
90e3cdf2 | 3224 | |
699733f6 AM |
3225 | for (; i < symcount; ++i) |
3226 | if ((syms[i]->flags & BSF_SECTION_SYM) == 0) | |
3227 | break; | |
3228 | secsymend = i; | |
90e3cdf2 | 3229 | |
699733f6 | 3230 | for (; i < symcount; ++i) |
ffcfec52 | 3231 | if (strcmp (syms[i]->section->name, ".opd") != 0) |
699733f6 AM |
3232 | break; |
3233 | opdsymend = i; | |
90e3cdf2 | 3234 | |
699733f6 AM |
3235 | for (; i < symcount; ++i) |
3236 | if ((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
3237 | != (SEC_CODE | SEC_ALLOC)) | |
3238 | break; | |
3239 | symcount = i; | |
3240 | ||
c9727e01 | 3241 | count = 0; |
90e3cdf2 | 3242 | |
699733f6 | 3243 | if (relocatable) |
90e3cdf2 | 3244 | { |
699733f6 AM |
3245 | bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean); |
3246 | arelent *r; | |
3247 | size_t size; | |
3248 | long relcount; | |
90e3cdf2 | 3249 | |
468392fb AM |
3250 | if (opdsymend == secsymend) |
3251 | goto done; | |
3252 | ||
699733f6 | 3253 | slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; |
90e3cdf2 | 3254 | relcount = (opd->flags & SEC_RELOC) ? opd->reloc_count : 0; |
7356fed5 | 3255 | if (relcount == 0) |
c9727e01 | 3256 | goto done; |
90e3cdf2 | 3257 | |
7356fed5 AM |
3258 | if (!(*slurp_relocs) (abfd, opd, static_syms, FALSE)) |
3259 | { | |
3260 | count = -1; | |
3261 | goto done; | |
3262 | } | |
3263 | ||
699733f6 | 3264 | size = 0; |
595da8c5 | 3265 | for (i = secsymend, r = opd->relocation; i < opdsymend; ++i) |
699733f6 AM |
3266 | { |
3267 | asymbol *sym; | |
90e3cdf2 | 3268 | |
595da8c5 | 3269 | while (r < opd->relocation + relcount |
699733f6 AM |
3270 | && r->address < syms[i]->value + opd->vma) |
3271 | ++r; | |
90e3cdf2 | 3272 | |
595da8c5 | 3273 | if (r == opd->relocation + relcount) |
699733f6 | 3274 | break; |
90e3cdf2 | 3275 | |
699733f6 AM |
3276 | if (r->address != syms[i]->value + opd->vma) |
3277 | continue; | |
90e3cdf2 | 3278 | |
699733f6 AM |
3279 | if (r->howto->type != R_PPC64_ADDR64) |
3280 | continue; | |
90e3cdf2 | 3281 | |
699733f6 AM |
3282 | sym = *r->sym_ptr_ptr; |
3283 | if (!sym_exists_at (syms, opdsymend, symcount, | |
3284 | sym->section->id, sym->value + r->addend)) | |
3285 | { | |
3286 | ++count; | |
3287 | size += sizeof (asymbol); | |
3288 | size += strlen (syms[i]->name) + 2; | |
3289 | } | |
3290 | } | |
90e3cdf2 | 3291 | |
699733f6 AM |
3292 | s = *ret = bfd_malloc (size); |
3293 | if (s == NULL) | |
3294 | { | |
7356fed5 | 3295 | count = -1; |
c9727e01 | 3296 | goto done; |
699733f6 | 3297 | } |
90e3cdf2 | 3298 | |
699733f6 | 3299 | names = (char *) (s + count); |
90e3cdf2 | 3300 | |
595da8c5 | 3301 | for (i = secsymend, r = opd->relocation; i < opdsymend; ++i) |
90e3cdf2 | 3302 | { |
699733f6 | 3303 | asymbol *sym; |
90e3cdf2 | 3304 | |
595da8c5 | 3305 | while (r < opd->relocation + relcount |
699733f6 AM |
3306 | && r->address < syms[i]->value + opd->vma) |
3307 | ++r; | |
90e3cdf2 | 3308 | |
595da8c5 | 3309 | if (r == opd->relocation + relcount) |
699733f6 AM |
3310 | break; |
3311 | ||
3312 | if (r->address != syms[i]->value + opd->vma) | |
3313 | continue; | |
3314 | ||
3315 | if (r->howto->type != R_PPC64_ADDR64) | |
3316 | continue; | |
90e3cdf2 | 3317 | |
699733f6 AM |
3318 | sym = *r->sym_ptr_ptr; |
3319 | if (!sym_exists_at (syms, opdsymend, symcount, | |
3320 | sym->section->id, sym->value + r->addend)) | |
3321 | { | |
3322 | size_t len; | |
3323 | ||
3324 | *s = *syms[i]; | |
6ba2a415 | 3325 | s->flags |= BSF_SYNTHETIC; |
699733f6 AM |
3326 | s->section = sym->section; |
3327 | s->value = sym->value + r->addend; | |
3328 | s->name = names; | |
3329 | *names++ = '.'; | |
3330 | len = strlen (syms[i]->name); | |
3331 | memcpy (names, syms[i]->name, len + 1); | |
3332 | names += len + 1; | |
6f610d07 UW |
3333 | /* Have udata.p point back to the original symbol this |
3334 | synthetic symbol was derived from. */ | |
3335 | s->udata.p = syms[i]; | |
699733f6 AM |
3336 | s++; |
3337 | } | |
3338 | } | |
3339 | } | |
3340 | else | |
90e3cdf2 | 3341 | { |
468392fb | 3342 | bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean); |
ee67d69a | 3343 | bfd_byte *contents = NULL; |
699733f6 | 3344 | size_t size; |
468392fb AM |
3345 | long plt_count = 0; |
3346 | bfd_vma glink_vma = 0, resolv_vma = 0; | |
3347 | asection *dynamic, *glink = NULL, *relplt = NULL; | |
3348 | arelent *p; | |
90e3cdf2 | 3349 | |
ee67d69a | 3350 | if (opd != NULL && !bfd_malloc_and_get_section (abfd, opd, &contents)) |
699733f6 | 3351 | { |
ee67d69a | 3352 | free_contents_and_exit: |
699733f6 | 3353 | if (contents) |
ee67d69a | 3354 | free (contents); |
7356fed5 | 3355 | count = -1; |
c9727e01 | 3356 | goto done; |
699733f6 | 3357 | } |
90e3cdf2 | 3358 | |
699733f6 AM |
3359 | size = 0; |
3360 | for (i = secsymend; i < opdsymend; ++i) | |
3361 | { | |
3362 | bfd_vma ent; | |
90e3cdf2 | 3363 | |
5ef11c02 AM |
3364 | /* Ignore bogus symbols. */ |
3365 | if (syms[i]->value > opd->size - 8) | |
3366 | continue; | |
3367 | ||
699733f6 AM |
3368 | ent = bfd_get_64 (abfd, contents + syms[i]->value); |
3369 | if (!sym_exists_at (syms, opdsymend, symcount, -1, ent)) | |
3370 | { | |
3371 | ++count; | |
3372 | size += sizeof (asymbol); | |
3373 | size += strlen (syms[i]->name) + 2; | |
3374 | } | |
3375 | } | |
90e3cdf2 | 3376 | |
468392fb | 3377 | /* Get start of .glink stubs from DT_PPC64_GLINK. */ |
066ee829 AM |
3378 | if (dyn_count != 0 |
3379 | && (dynamic = bfd_get_section_by_name (abfd, ".dynamic")) != NULL) | |
468392fb AM |
3380 | { |
3381 | bfd_byte *dynbuf, *extdyn, *extdynend; | |
3382 | size_t extdynsize; | |
3383 | void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *); | |
3384 | ||
3385 | if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf)) | |
3386 | goto free_contents_and_exit; | |
3387 | ||
3388 | extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn; | |
3389 | swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in; | |
3390 | ||
3391 | extdyn = dynbuf; | |
3392 | extdynend = extdyn + dynamic->size; | |
3393 | for (; extdyn < extdynend; extdyn += extdynsize) | |
3394 | { | |
3395 | Elf_Internal_Dyn dyn; | |
3396 | (*swap_dyn_in) (abfd, extdyn, &dyn); | |
3397 | ||
3398 | if (dyn.d_tag == DT_NULL) | |
3399 | break; | |
3400 | ||
3401 | if (dyn.d_tag == DT_PPC64_GLINK) | |
3402 | { | |
b9e5796b AM |
3403 | /* The first glink stub starts at offset 32; see |
3404 | comment in ppc64_elf_finish_dynamic_sections. */ | |
3405 | glink_vma = dyn.d_un.d_val + GLINK_CALL_STUB_SIZE - 8 * 4; | |
468392fb AM |
3406 | /* The .glink section usually does not survive the final |
3407 | link; search for the section (usually .text) where the | |
3408 | glink stubs now reside. */ | |
3409 | glink = bfd_sections_find_if (abfd, section_covers_vma, | |
3410 | &glink_vma); | |
3411 | break; | |
3412 | } | |
3413 | } | |
3414 | ||
3415 | free (dynbuf); | |
3416 | } | |
3417 | ||
3418 | if (glink != NULL) | |
3419 | { | |
3420 | /* Determine __glink trampoline by reading the relative branch | |
3421 | from the first glink stub. */ | |
3422 | bfd_byte buf[4]; | |
b9e5796b AM |
3423 | unsigned int off = 0; |
3424 | ||
3425 | while (bfd_get_section_contents (abfd, glink, buf, | |
3426 | glink_vma + off - glink->vma, 4)) | |
468392fb AM |
3427 | { |
3428 | unsigned int insn = bfd_get_32 (abfd, buf); | |
3429 | insn ^= B_DOT; | |
3430 | if ((insn & ~0x3fffffc) == 0) | |
b9e5796b AM |
3431 | { |
3432 | resolv_vma = glink_vma + off + (insn ^ 0x2000000) - 0x2000000; | |
3433 | break; | |
3434 | } | |
3435 | off += 4; | |
3436 | if (off > 4) | |
3437 | break; | |
468392fb AM |
3438 | } |
3439 | ||
3440 | if (resolv_vma) | |
3441 | size += sizeof (asymbol) + sizeof ("__glink_PLTresolve"); | |
468392fb | 3442 | |
066ee829 AM |
3443 | relplt = bfd_get_section_by_name (abfd, ".rela.plt"); |
3444 | if (relplt != NULL) | |
3445 | { | |
3446 | slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; | |
3447 | if (! (*slurp_relocs) (abfd, relplt, dyn_syms, TRUE)) | |
3448 | goto free_contents_and_exit; | |
68ffbac6 | 3449 | |
066ee829 AM |
3450 | plt_count = relplt->size / sizeof (Elf64_External_Rela); |
3451 | size += plt_count * sizeof (asymbol); | |
468392fb | 3452 | |
066ee829 AM |
3453 | p = relplt->relocation; |
3454 | for (i = 0; i < plt_count; i++, p++) | |
e054468f AM |
3455 | { |
3456 | size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt"); | |
3457 | if (p->addend != 0) | |
3458 | size += sizeof ("+0x") - 1 + 16; | |
3459 | } | |
066ee829 | 3460 | } |
468392fb AM |
3461 | } |
3462 | ||
699733f6 AM |
3463 | s = *ret = bfd_malloc (size); |
3464 | if (s == NULL) | |
7356fed5 | 3465 | goto free_contents_and_exit; |
90e3cdf2 | 3466 | |
468392fb | 3467 | names = (char *) (s + count + plt_count + (resolv_vma != 0)); |
90e3cdf2 | 3468 | |
699733f6 | 3469 | for (i = secsymend; i < opdsymend; ++i) |
90e3cdf2 | 3470 | { |
699733f6 | 3471 | bfd_vma ent; |
90e3cdf2 | 3472 | |
5ef11c02 AM |
3473 | if (syms[i]->value > opd->size - 8) |
3474 | continue; | |
3475 | ||
699733f6 AM |
3476 | ent = bfd_get_64 (abfd, contents + syms[i]->value); |
3477 | if (!sym_exists_at (syms, opdsymend, symcount, -1, ent)) | |
90e3cdf2 | 3478 | { |
c9727e01 | 3479 | long lo, hi; |
699733f6 | 3480 | size_t len; |
c9727e01 | 3481 | asection *sec = abfd->sections; |
90e3cdf2 | 3482 | |
699733f6 AM |
3483 | *s = *syms[i]; |
3484 | lo = codesecsym; | |
3485 | hi = codesecsymend; | |
3486 | while (lo < hi) | |
3487 | { | |
c9727e01 | 3488 | long mid = (lo + hi) >> 1; |
699733f6 AM |
3489 | if (syms[mid]->section->vma < ent) |
3490 | lo = mid + 1; | |
3491 | else if (syms[mid]->section->vma > ent) | |
3492 | hi = mid; | |
3493 | else | |
c9727e01 AM |
3494 | { |
3495 | sec = syms[mid]->section; | |
3496 | break; | |
3497 | } | |
699733f6 AM |
3498 | } |
3499 | ||
c9727e01 | 3500 | if (lo >= hi && lo > codesecsym) |
699733f6 | 3501 | sec = syms[lo - 1]->section; |
699733f6 AM |
3502 | |
3503 | for (; sec != NULL; sec = sec->next) | |
3504 | { | |
3505 | if (sec->vma > ent) | |
3506 | break; | |
63524580 JK |
3507 | /* SEC_LOAD may not be set if SEC is from a separate debug |
3508 | info file. */ | |
3509 | if ((sec->flags & SEC_ALLOC) == 0) | |
699733f6 AM |
3510 | break; |
3511 | if ((sec->flags & SEC_CODE) != 0) | |
3512 | s->section = sec; | |
3513 | } | |
6ba2a415 | 3514 | s->flags |= BSF_SYNTHETIC; |
699733f6 AM |
3515 | s->value = ent - s->section->vma; |
3516 | s->name = names; | |
3517 | *names++ = '.'; | |
3518 | len = strlen (syms[i]->name); | |
3519 | memcpy (names, syms[i]->name, len + 1); | |
3520 | names += len + 1; | |
6f610d07 UW |
3521 | /* Have udata.p point back to the original symbol this |
3522 | synthetic symbol was derived from. */ | |
3523 | s->udata.p = syms[i]; | |
699733f6 | 3524 | s++; |
90e3cdf2 | 3525 | } |
90e3cdf2 | 3526 | } |
699733f6 | 3527 | free (contents); |
468392fb AM |
3528 | |
3529 | if (glink != NULL && relplt != NULL) | |
3530 | { | |
3531 | if (resolv_vma) | |
3532 | { | |
3533 | /* Add a symbol for the main glink trampoline. */ | |
86a4952b | 3534 | memset (s, 0, sizeof *s); |
468392fb | 3535 | s->the_bfd = abfd; |
6ba2a415 | 3536 | s->flags = BSF_GLOBAL | BSF_SYNTHETIC; |
468392fb AM |
3537 | s->section = glink; |
3538 | s->value = resolv_vma - glink->vma; | |
3539 | s->name = names; | |
3540 | memcpy (names, "__glink_PLTresolve", sizeof ("__glink_PLTresolve")); | |
3541 | names += sizeof ("__glink_PLTresolve"); | |
3542 | s++; | |
3543 | count++; | |
3544 | } | |
3545 | ||
3546 | /* FIXME: It would be very much nicer to put sym@plt on the | |
3547 | stub rather than on the glink branch table entry. The | |
3548 | objdump disassembler would then use a sensible symbol | |
3549 | name on plt calls. The difficulty in doing so is | |
3550 | a) finding the stubs, and, | |
3551 | b) matching stubs against plt entries, and, | |
3552 | c) there can be multiple stubs for a given plt entry. | |
3553 | ||
3554 | Solving (a) could be done by code scanning, but older | |
3555 | ppc64 binaries used different stubs to current code. | |
3556 | (b) is the tricky one since you need to known the toc | |
3557 | pointer for at least one function that uses a pic stub to | |
3558 | be able to calculate the plt address referenced. | |
3559 | (c) means gdb would need to set multiple breakpoints (or | |
3560 | find the glink branch itself) when setting breakpoints | |
3561 | for pending shared library loads. */ | |
3562 | p = relplt->relocation; | |
3563 | for (i = 0; i < plt_count; i++, p++) | |
3564 | { | |
3565 | size_t len; | |
3566 | ||
3567 | *s = **p->sym_ptr_ptr; | |
3568 | /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since | |
3569 | we are defining a symbol, ensure one of them is set. */ | |
3570 | if ((s->flags & BSF_LOCAL) == 0) | |
3571 | s->flags |= BSF_GLOBAL; | |
6ba2a415 | 3572 | s->flags |= BSF_SYNTHETIC; |
468392fb AM |
3573 | s->section = glink; |
3574 | s->value = glink_vma - glink->vma; | |
3575 | s->name = names; | |
3576 | s->udata.p = NULL; | |
3577 | len = strlen ((*p->sym_ptr_ptr)->name); | |
3578 | memcpy (names, (*p->sym_ptr_ptr)->name, len); | |
3579 | names += len; | |
e054468f AM |
3580 | if (p->addend != 0) |
3581 | { | |
3582 | memcpy (names, "+0x", sizeof ("+0x") - 1); | |
3583 | names += sizeof ("+0x") - 1; | |
3584 | bfd_sprintf_vma (abfd, names, p->addend); | |
3585 | names += strlen (names); | |
3586 | } | |
468392fb AM |
3587 | memcpy (names, "@plt", sizeof ("@plt")); |
3588 | names += sizeof ("@plt"); | |
3589 | s++; | |
b9e5796b AM |
3590 | if (abi < 2) |
3591 | { | |
3592 | glink_vma += 8; | |
3593 | if (i >= 0x8000) | |
3594 | glink_vma += 4; | |
3595 | } | |
3596 | else | |
468392fb AM |
3597 | glink_vma += 4; |
3598 | } | |
3599 | count += plt_count; | |
3600 | } | |
90e3cdf2 JJ |
3601 | } |
3602 | ||
c9727e01 | 3603 | done: |
a7535cf3 | 3604 | free (syms); |
90e3cdf2 JJ |
3605 | return count; |
3606 | } | |
5bd4f169 | 3607 | \f |
65f38f15 AM |
3608 | /* The following functions are specific to the ELF linker, while |
3609 | functions above are used generally. Those named ppc64_elf_* are | |
3610 | called by the main ELF linker code. They appear in this file more | |
3611 | or less in the order in which they are called. eg. | |
3612 | ppc64_elf_check_relocs is called early in the link process, | |
3613 | ppc64_elf_finish_dynamic_sections is one of the last functions | |
e86ce104 AM |
3614 | called. |
3615 | ||
3616 | PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that | |
3617 | functions have both a function code symbol and a function descriptor | |
3618 | symbol. A call to foo in a relocatable object file looks like: | |
3619 | ||
3620 | . .text | |
3621 | . x: | |
3622 | . bl .foo | |
3623 | . nop | |
3624 | ||
3625 | The function definition in another object file might be: | |
3626 | ||
3627 | . .section .opd | |
3628 | . foo: .quad .foo | |
3629 | . .quad .TOC.@tocbase | |
3630 | . .quad 0 | |
3631 | . | |
3632 | . .text | |
3633 | . .foo: blr | |
3634 | ||
3635 | When the linker resolves the call during a static link, the branch | |
3636 | unsurprisingly just goes to .foo and the .opd information is unused. | |
3637 | If the function definition is in a shared library, things are a little | |
3638 | different: The call goes via a plt call stub, the opd information gets | |
3639 | copied to the plt, and the linker patches the nop. | |
3640 | ||
3641 | . x: | |
3642 | . bl .foo_stub | |
3643 | . ld 2,40(1) | |
3644 | . | |
3645 | . | |
3646 | . .foo_stub: | |
71a39c98 AM |
3647 | . std 2,40(1) # in practice, the call stub |
3648 | . addis 11,2,Lfoo@toc@ha # is slightly optimized, but | |
3649 | . addi 11,11,Lfoo@toc@l # this is the general idea | |
3650 | . ld 12,0(11) | |
3651 | . ld 2,8(11) | |
3652 | . mtctr 12 | |
3653 | . ld 11,16(11) | |
e86ce104 AM |
3654 | . bctr |
3655 | . | |
3656 | . .section .plt | |
3657 | . Lfoo: reloc (R_PPC64_JMP_SLOT, foo) | |
3658 | ||
3659 | The "reloc ()" notation is supposed to indicate that the linker emits | |
3660 | an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd | |
3661 | copying. | |
3662 | ||
3663 | What are the difficulties here? Well, firstly, the relocations | |
3664 | examined by the linker in check_relocs are against the function code | |
3665 | sym .foo, while the dynamic relocation in the plt is emitted against | |
3666 | the function descriptor symbol, foo. Somewhere along the line, we need | |
3667 | to carefully copy dynamic link information from one symbol to the other. | |
3668 | Secondly, the generic part of the elf linker will make .foo a dynamic | |
3669 | symbol as is normal for most other backends. We need foo dynamic | |
3670 | instead, at least for an application final link. However, when | |
3671 | creating a shared library containing foo, we need to have both symbols | |
3672 | dynamic so that references to .foo are satisfied during the early | |
3673 | stages of linking. Otherwise the linker might decide to pull in a | |
8387904d AM |
3674 | definition from some other object, eg. a static library. |
3675 | ||
3676 | Update: As of August 2004, we support a new convention. Function | |
3677 | calls may use the function descriptor symbol, ie. "bl foo". This | |
3678 | behaves exactly as "bl .foo". */ | |
65f38f15 | 3679 | |
1d483afe | 3680 | /* Of those relocs that might be copied as dynamic relocs, this function |
58ac9f71 AM |
3681 | selects those that must be copied when linking a shared library, |
3682 | even when the symbol is local. */ | |
65f38f15 | 3683 | |
1d483afe AM |
3684 | static int |
3685 | must_be_dyn_reloc (struct bfd_link_info *info, | |
3686 | enum elf_ppc64_reloc_type r_type) | |
3687 | { | |
3688 | switch (r_type) | |
3689 | { | |
3690 | default: | |
3691 | return 1; | |
3692 | ||
3693 | case R_PPC64_REL32: | |
3694 | case R_PPC64_REL64: | |
3695 | case R_PPC64_REL30: | |
3696 | return 0; | |
3697 | ||
3698 | case R_PPC64_TPREL16: | |
3699 | case R_PPC64_TPREL16_LO: | |
3700 | case R_PPC64_TPREL16_HI: | |
3701 | case R_PPC64_TPREL16_HA: | |
3702 | case R_PPC64_TPREL16_DS: | |
3703 | case R_PPC64_TPREL16_LO_DS: | |
f9c6b907 AM |
3704 | case R_PPC64_TPREL16_HIGH: |
3705 | case R_PPC64_TPREL16_HIGHA: | |
1d483afe AM |
3706 | case R_PPC64_TPREL16_HIGHER: |
3707 | case R_PPC64_TPREL16_HIGHERA: | |
3708 | case R_PPC64_TPREL16_HIGHEST: | |
3709 | case R_PPC64_TPREL16_HIGHESTA: | |
3710 | case R_PPC64_TPREL64: | |
3711 | return !info->executable; | |
3712 | } | |
3713 | } | |
65f38f15 | 3714 | |
f4656909 AM |
3715 | /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid |
3716 | copying dynamic variables from a shared lib into an app's dynbss | |
3717 | section, and instead use a dynamic relocation to point into the | |
5d35169e AM |
3718 | shared lib. With code that gcc generates, it's vital that this be |
3719 | enabled; In the PowerPC64 ABI, the address of a function is actually | |
3720 | the address of a function descriptor, which resides in the .opd | |
3721 | section. gcc uses the descriptor directly rather than going via the | |
3722 | GOT as some other ABI's do, which means that initialized function | |
3723 | pointers must reference the descriptor. Thus, a function pointer | |
3724 | initialized to the address of a function in a shared library will | |
3725 | either require a copy reloc, or a dynamic reloc. Using a copy reloc | |
4cc11e76 | 3726 | redefines the function descriptor symbol to point to the copy. This |
5d35169e AM |
3727 | presents a problem as a plt entry for that function is also |
3728 | initialized from the function descriptor symbol and the copy reloc | |
3729 | may not be initialized first. */ | |
a23b6845 | 3730 | #define ELIMINATE_COPY_RELOCS 1 |
f4656909 | 3731 | |
721956f4 | 3732 | /* Section name for stubs is the associated section name plus this |
29942be8 NC |
3733 | string. */ |
3734 | #define STUB_SUFFIX ".stub" | |
721956f4 AM |
3735 | |
3736 | /* Linker stubs. | |
3737 | ppc_stub_long_branch: | |
3738 | Used when a 14 bit branch (or even a 24 bit branch) can't reach its | |
3739 | destination, but a 24 bit branch in a stub section will reach. | |
3740 | . b dest | |
3741 | ||
3742 | ppc_stub_plt_branch: | |
3743 | Similar to the above, but a 24 bit branch in the stub section won't | |
3744 | reach its destination. | |
71a39c98 AM |
3745 | . addis %r11,%r2,xxx@toc@ha |
3746 | . ld %r12,xxx@toc@l(%r11) | |
3747 | . mtctr %r12 | |
721956f4 AM |
3748 | . bctr |
3749 | ||
3750 | ppc_stub_plt_call: | |
2c66dc6c AM |
3751 | Used to call a function in a shared library. If it so happens that |
3752 | the plt entry referenced crosses a 64k boundary, then an extra | |
71a39c98 | 3753 | "addi %r11,%r11,xxx@toc@l" will be inserted before the "mtctr". |
721956f4 | 3754 | . std %r2,40(%r1) |
71a39c98 AM |
3755 | . addis %r11,%r2,xxx@toc@ha |
3756 | . ld %r12,xxx+0@toc@l(%r11) | |
3757 | . mtctr %r12 | |
3758 | . ld %r2,xxx+8@toc@l(%r11) | |
3759 | . ld %r11,xxx+16@toc@l(%r11) | |
721956f4 | 3760 | . bctr |
ad8e1ba5 AM |
3761 | |
3762 | ppc_stub_long_branch and ppc_stub_plt_branch may also have additional | |
3763 | code to adjust the value and save r2 to support multiple toc sections. | |
3764 | A ppc_stub_long_branch with an r2 offset looks like: | |
3765 | . std %r2,40(%r1) | |
3766 | . addis %r2,%r2,off@ha | |
3767 | . addi %r2,%r2,off@l | |
3768 | . b dest | |
3769 | ||
3770 | A ppc_stub_plt_branch with an r2 offset looks like: | |
3771 | . std %r2,40(%r1) | |
71a39c98 AM |
3772 | . addis %r11,%r2,xxx@toc@ha |
3773 | . ld %r12,xxx@toc@l(%r11) | |
ad8e1ba5 AM |
3774 | . addis %r2,%r2,off@ha |
3775 | . addi %r2,%r2,off@l | |
71a39c98 | 3776 | . mtctr %r12 |
ad8e1ba5 | 3777 | . bctr |
ac2df442 AM |
3778 | |
3779 | In cases where the "addis" instruction would add zero, the "addis" is | |
3780 | omitted and following instructions modified slightly in some cases. | |
721956f4 AM |
3781 | */ |
3782 | ||
3783 | enum ppc_stub_type { | |
3784 | ppc_stub_none, | |
3785 | ppc_stub_long_branch, | |
ad8e1ba5 | 3786 | ppc_stub_long_branch_r2off, |
721956f4 | 3787 | ppc_stub_plt_branch, |
ad8e1ba5 | 3788 | ppc_stub_plt_branch_r2off, |
794e51c0 | 3789 | ppc_stub_plt_call, |
7341d5e2 AM |
3790 | ppc_stub_plt_call_r2save, |
3791 | ppc_stub_global_entry | |
721956f4 AM |
3792 | }; |
3793 | ||
3794 | struct ppc_stub_hash_entry { | |
3795 | ||
3796 | /* Base hash table entry structure. */ | |
3797 | struct bfd_hash_entry root; | |
3798 | ||
ad8e1ba5 AM |
3799 | enum ppc_stub_type stub_type; |
3800 | ||
721956f4 AM |
3801 | /* The stub section. */ |
3802 | asection *stub_sec; | |
3803 | ||
3804 | /* Offset within stub_sec of the beginning of this stub. */ | |
3805 | bfd_vma stub_offset; | |
3806 | ||
3807 | /* Given the symbol's value and its section we can determine its final | |
3808 | value when building the stubs (so the stub knows where to jump. */ | |
3809 | bfd_vma target_value; | |
3810 | asection *target_section; | |
3811 | ||
721956f4 AM |
3812 | /* The symbol table entry, if any, that this was derived from. */ |
3813 | struct ppc_link_hash_entry *h; | |
e054468f | 3814 | struct plt_entry *plt_ent; |
721956f4 AM |
3815 | |
3816 | /* Where this stub is being called from, or, in the case of combined | |
3817 | stub sections, the first input section in the group. */ | |
3818 | asection *id_sec; | |
6911b7dc AM |
3819 | |
3820 | /* Symbol st_other. */ | |
3821 | unsigned char other; | |
721956f4 AM |
3822 | }; |
3823 | ||
3824 | struct ppc_branch_hash_entry { | |
3825 | ||
3826 | /* Base hash table entry structure. */ | |
3827 | struct bfd_hash_entry root; | |
3828 | ||
c456f082 | 3829 | /* Offset within branch lookup table. */ |
721956f4 AM |
3830 | unsigned int offset; |
3831 | ||
3832 | /* Generation marker. */ | |
3833 | unsigned int iter; | |
3834 | }; | |
65f38f15 | 3835 | |
19e08130 AM |
3836 | /* Used to track dynamic relocations for local symbols. */ |
3837 | struct ppc_dyn_relocs | |
3838 | { | |
3839 | struct ppc_dyn_relocs *next; | |
3840 | ||
3841 | /* The input section of the reloc. */ | |
3842 | asection *sec; | |
3843 | ||
3844 | /* Total number of relocs copied for the input section. */ | |
3845 | unsigned int count : 31; | |
3846 | ||
3847 | /* Whether this entry is for STT_GNU_IFUNC symbols. */ | |
3848 | unsigned int ifunc : 1; | |
3849 | }; | |
3850 | ||
65f38f15 AM |
3851 | struct ppc_link_hash_entry |
3852 | { | |
3853 | struct elf_link_hash_entry elf; | |
3854 | ||
b3fac117 AM |
3855 | union { |
3856 | /* A pointer to the most recently used stub hash entry against this | |
3857 | symbol. */ | |
3858 | struct ppc_stub_hash_entry *stub_cache; | |
3859 | ||
3860 | /* A pointer to the next symbol starting with a '.' */ | |
3861 | struct ppc_link_hash_entry *next_dot_sym; | |
3862 | } u; | |
721956f4 | 3863 | |
65f38f15 | 3864 | /* Track dynamic relocs copied for this symbol. */ |
6061a67d | 3865 | struct elf_dyn_relocs *dyn_relocs; |
e86ce104 | 3866 | |
721956f4 | 3867 | /* Link between function code and descriptor symbols. */ |
34814b9f | 3868 | struct ppc_link_hash_entry *oh; |
721956f4 | 3869 | |
e86ce104 AM |
3870 | /* Flag function code and descriptor symbols. */ |
3871 | unsigned int is_func:1; | |
3872 | unsigned int is_func_descriptor:1; | |
908b32fc | 3873 | unsigned int fake:1; |
411e1bfb | 3874 | |
c5614fa4 AM |
3875 | /* Whether global opd/toc sym has been adjusted or not. |
3876 | After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag | |
3877 | should be set for all globals defined in any opd/toc section. */ | |
754021d0 AM |
3878 | unsigned int adjust_done:1; |
3879 | ||
99877b66 AM |
3880 | /* Set if we twiddled this symbol to weak at some stage. */ |
3881 | unsigned int was_undefined:1; | |
3882 | ||
411e1bfb | 3883 | /* Contexts in which symbol is used in the GOT (or TOC). |
e7b938ca AM |
3884 | TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the |
3885 | corresponding relocs are encountered during check_relocs. | |
3886 | tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to | |
3887 | indicate the corresponding GOT entry type is not needed. | |
3888 | tls_optimize may also set TLS_TPRELGD when a GD reloc turns into | |
3889 | a TPREL one. We use a separate flag rather than setting TPREL | |
3890 | just for convenience in distinguishing the two cases. */ | |
3891 | #define TLS_GD 1 /* GD reloc. */ | |
3892 | #define TLS_LD 2 /* LD reloc. */ | |
3893 | #define TLS_TPREL 4 /* TPREL reloc, => IE. */ | |
3894 | #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */ | |
3895 | #define TLS_TLS 16 /* Any TLS reloc. */ | |
3896 | #define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */ | |
3897 | #define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */ | |
e054468f | 3898 | #define PLT_IFUNC 128 /* STT_GNU_IFUNC. */ |
f961d9dd | 3899 | unsigned char tls_mask; |
65f38f15 AM |
3900 | }; |
3901 | ||
3902 | /* ppc64 ELF linker hash table. */ | |
3903 | ||
3904 | struct ppc_link_hash_table | |
3905 | { | |
3906 | struct elf_link_hash_table elf; | |
3907 | ||
721956f4 AM |
3908 | /* The stub hash table. */ |
3909 | struct bfd_hash_table stub_hash_table; | |
3910 | ||
3911 | /* Another hash table for plt_branch stubs. */ | |
3912 | struct bfd_hash_table branch_hash_table; | |
3913 | ||
3b421ab3 AM |
3914 | /* Hash table for function prologue tocsave. */ |
3915 | htab_t tocsave_htab; | |
3916 | ||
e7d1c40c AM |
3917 | /* Various options and other info passed from the linker. */ |
3918 | struct ppc64_elf_params *params; | |
721956f4 AM |
3919 | |
3920 | /* Array to keep track of which stub sections have been created, and | |
3921 | information on stub grouping. */ | |
3922 | struct map_stub { | |
3923 | /* This is the section to which stubs in the group will be attached. */ | |
3924 | asection *link_sec; | |
3925 | /* The stub section. */ | |
3926 | asection *stub_sec; | |
ad8e1ba5 AM |
3927 | /* Along with elf_gp, specifies the TOC pointer used in this group. */ |
3928 | bfd_vma toc_off; | |
721956f4 AM |
3929 | } *stub_group; |
3930 | ||
ad8e1ba5 AM |
3931 | /* Temp used when calculating TOC pointers. */ |
3932 | bfd_vma toc_curr; | |
bf102f86 AM |
3933 | bfd *toc_bfd; |
3934 | asection *toc_first_sec; | |
ad8e1ba5 | 3935 | |
8f3bab57 AM |
3936 | /* Highest input section id. */ |
3937 | int top_id; | |
3938 | ||
734b6cf9 AM |
3939 | /* Highest output section index. */ |
3940 | int top_index; | |
3941 | ||
b3fac117 AM |
3942 | /* Used when adding symbols. */ |
3943 | struct ppc_link_hash_entry *dot_syms; | |
3944 | ||
734b6cf9 AM |
3945 | /* List of input sections for each output section. */ |
3946 | asection **input_list; | |
721956f4 | 3947 | |
33e44f2e | 3948 | /* Shortcuts to get to dynamic linker sections. */ |
4ce794b7 AM |
3949 | asection *dynbss; |
3950 | asection *relbss; | |
3951 | asection *glink; | |
82bd7b59 | 3952 | asection *sfpr; |
4ce794b7 AM |
3953 | asection *brlt; |
3954 | asection *relbrlt; | |
58d180e8 | 3955 | asection *glink_eh_frame; |
ec338859 | 3956 | |
8387904d AM |
3957 | /* Shortcut to .__tls_get_addr and __tls_get_addr. */ |
3958 | struct ppc_link_hash_entry *tls_get_addr; | |
3959 | struct ppc_link_hash_entry *tls_get_addr_fd; | |
411e1bfb | 3960 | |
927be08e AM |
3961 | /* The size of reliplt used by got entry relocs. */ |
3962 | bfd_size_type got_reli_size; | |
3963 | ||
9b5ecbd0 | 3964 | /* Statistics. */ |
7341d5e2 | 3965 | unsigned long stub_count[ppc_stub_global_entry]; |
9b5ecbd0 | 3966 | |
ee75fd95 AM |
3967 | /* Number of stubs against global syms. */ |
3968 | unsigned long stub_globals; | |
3969 | ||
ee67d69a AM |
3970 | /* Set if we're linking code with function descriptors. */ |
3971 | unsigned int opd_abi:1; | |
3972 | ||
4c52953f | 3973 | /* Support for multiple toc sections. */ |
33c0ec9d | 3974 | unsigned int do_multi_toc:1; |
4c52953f | 3975 | unsigned int multi_toc_needed:1; |
927be08e | 3976 | unsigned int second_toc_pass:1; |
67f0cbdb | 3977 | unsigned int do_toc_opt:1; |
4c52953f | 3978 | |
5d1634d7 | 3979 | /* Set on error. */ |
99877b66 | 3980 | unsigned int stub_error:1; |
721956f4 | 3981 | |
f6c7c3e8 | 3982 | /* Temp used by ppc64_elf_before_check_relocs. */ |
99877b66 | 3983 | unsigned int twiddled_syms:1; |
721956f4 AM |
3984 | |
3985 | /* Incremented every time we size stubs. */ | |
3986 | unsigned int stub_iteration; | |
5d1634d7 | 3987 | |
87d72d41 AM |
3988 | /* Small local sym cache. */ |
3989 | struct sym_cache sym_cache; | |
65f38f15 AM |
3990 | }; |
3991 | ||
4c52953f AM |
3992 | /* Rename some of the generic section flags to better document how they |
3993 | are used here. */ | |
b0dddeec AM |
3994 | |
3995 | /* Nonzero if this section has TLS related relocations. */ | |
3996 | #define has_tls_reloc sec_flg0 | |
3997 | ||
3998 | /* Nonzero if this section has a call to __tls_get_addr. */ | |
3999 | #define has_tls_get_addr_call sec_flg1 | |
4000 | ||
4001 | /* Nonzero if this section has any toc or got relocs. */ | |
4002 | #define has_toc_reloc sec_flg2 | |
4003 | ||
4004 | /* Nonzero if this section has a call to another section that uses | |
4005 | the toc or got. */ | |
d77c8a4b | 4006 | #define makes_toc_func_call sec_flg3 |
b0dddeec AM |
4007 | |
4008 | /* Recursion protection when determining above flag. */ | |
d77c8a4b | 4009 | #define call_check_in_progress sec_flg4 |
70cc837d | 4010 | #define call_check_done sec_flg5 |
4c52953f | 4011 | |
65f38f15 AM |
4012 | /* Get the ppc64 ELF linker hash table from a link_info structure. */ |
4013 | ||
4014 | #define ppc_hash_table(p) \ | |
4dfe6ac6 NC |
4015 | (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \ |
4016 | == PPC64_ELF_DATA ? ((struct ppc_link_hash_table *) ((p)->hash)) : NULL) | |
65f38f15 | 4017 | |
721956f4 AM |
4018 | #define ppc_stub_hash_lookup(table, string, create, copy) \ |
4019 | ((struct ppc_stub_hash_entry *) \ | |
4020 | bfd_hash_lookup ((table), (string), (create), (copy))) | |
4021 | ||
4022 | #define ppc_branch_hash_lookup(table, string, create, copy) \ | |
4023 | ((struct ppc_branch_hash_entry *) \ | |
4024 | bfd_hash_lookup ((table), (string), (create), (copy))) | |
4025 | ||
4026 | /* Create an entry in the stub hash table. */ | |
4027 | ||
4028 | static struct bfd_hash_entry * | |
4ce794b7 AM |
4029 | stub_hash_newfunc (struct bfd_hash_entry *entry, |
4030 | struct bfd_hash_table *table, | |
4031 | const char *string) | |
721956f4 AM |
4032 | { |
4033 | /* Allocate the structure if it has not already been allocated by a | |
4034 | subclass. */ | |
4035 | if (entry == NULL) | |
4036 | { | |
4037 | entry = bfd_hash_allocate (table, sizeof (struct ppc_stub_hash_entry)); | |
4038 | if (entry == NULL) | |
4039 | return entry; | |
4040 | } | |
4041 | ||
4042 | /* Call the allocation method of the superclass. */ | |
4043 | entry = bfd_hash_newfunc (entry, table, string); | |
4044 | if (entry != NULL) | |
4045 | { | |
4046 | struct ppc_stub_hash_entry *eh; | |
4047 | ||
4048 | /* Initialize the local fields. */ | |
4049 | eh = (struct ppc_stub_hash_entry *) entry; | |
ad8e1ba5 | 4050 | eh->stub_type = ppc_stub_none; |
721956f4 AM |
4051 | eh->stub_sec = NULL; |
4052 | eh->stub_offset = 0; | |
4053 | eh->target_value = 0; | |
4054 | eh->target_section = NULL; | |
721956f4 | 4055 | eh->h = NULL; |
6911b7dc | 4056 | eh->plt_ent = NULL; |
721956f4 | 4057 | eh->id_sec = NULL; |
6911b7dc | 4058 | eh->other = 0; |
721956f4 AM |
4059 | } |
4060 | ||
4061 | return entry; | |
4062 | } | |
4063 | ||
4064 | /* Create an entry in the branch hash table. */ | |
4065 | ||
4066 | static struct bfd_hash_entry * | |
4ce794b7 AM |
4067 | branch_hash_newfunc (struct bfd_hash_entry *entry, |
4068 | struct bfd_hash_table *table, | |
4069 | const char *string) | |
721956f4 AM |
4070 | { |
4071 | /* Allocate the structure if it has not already been allocated by a | |
4072 | subclass. */ | |
4073 | if (entry == NULL) | |
4074 | { | |
4075 | entry = bfd_hash_allocate (table, sizeof (struct ppc_branch_hash_entry)); | |
4076 | if (entry == NULL) | |
4077 | return entry; | |
4078 | } | |
4079 | ||
4080 | /* Call the allocation method of the superclass. */ | |
4081 | entry = bfd_hash_newfunc (entry, table, string); | |
4082 | if (entry != NULL) | |
4083 | { | |
4084 | struct ppc_branch_hash_entry *eh; | |
4085 | ||
4086 | /* Initialize the local fields. */ | |
4087 | eh = (struct ppc_branch_hash_entry *) entry; | |
4088 | eh->offset = 0; | |
4089 | eh->iter = 0; | |
4090 | } | |
4091 | ||
4092 | return entry; | |
4093 | } | |
4094 | ||
65f38f15 AM |
4095 | /* Create an entry in a ppc64 ELF linker hash table. */ |
4096 | ||
4097 | static struct bfd_hash_entry * | |
4ce794b7 AM |
4098 | link_hash_newfunc (struct bfd_hash_entry *entry, |
4099 | struct bfd_hash_table *table, | |
4100 | const char *string) | |
65f38f15 AM |
4101 | { |
4102 | /* Allocate the structure if it has not already been allocated by a | |
4103 | subclass. */ | |
4104 | if (entry == NULL) | |
4105 | { | |
4106 | entry = bfd_hash_allocate (table, sizeof (struct ppc_link_hash_entry)); | |
4107 | if (entry == NULL) | |
4108 | return entry; | |
4109 | } | |
4110 | ||
4111 | /* Call the allocation method of the superclass. */ | |
4112 | entry = _bfd_elf_link_hash_newfunc (entry, table, string); | |
4113 | if (entry != NULL) | |
4114 | { | |
4115 | struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) entry; | |
4116 | ||
b3fac117 | 4117 | memset (&eh->u.stub_cache, 0, |
908b32fc | 4118 | (sizeof (struct ppc_link_hash_entry) |
b3fac117 AM |
4119 | - offsetof (struct ppc_link_hash_entry, u.stub_cache))); |
4120 | ||
4121 | /* When making function calls, old ABI code references function entry | |
4122 | points (dot symbols), while new ABI code references the function | |
4123 | descriptor symbol. We need to make any combination of reference and | |
4124 | definition work together, without breaking archive linking. | |
4125 | ||
4126 | For a defined function "foo" and an undefined call to "bar": | |
4127 | An old object defines "foo" and ".foo", references ".bar" (possibly | |
4128 | "bar" too). | |
4129 | A new object defines "foo" and references "bar". | |
4130 | ||
4131 | A new object thus has no problem with its undefined symbols being | |
4132 | satisfied by definitions in an old object. On the other hand, the | |
4133 | old object won't have ".bar" satisfied by a new object. | |
4134 | ||
4135 | Keep a list of newly added dot-symbols. */ | |
4136 | ||
4137 | if (string[0] == '.') | |
4138 | { | |
4139 | struct ppc_link_hash_table *htab; | |
4140 | ||
4141 | htab = (struct ppc_link_hash_table *) table; | |
4142 | eh->u.next_dot_sym = htab->dot_syms; | |
4143 | htab->dot_syms = eh; | |
4144 | } | |
65f38f15 AM |
4145 | } |
4146 | ||
4147 | return entry; | |
4148 | } | |
4149 | ||
3b421ab3 AM |
4150 | struct tocsave_entry { |
4151 | asection *sec; | |
4152 | bfd_vma offset; | |
4153 | }; | |
4154 | ||
4155 | static hashval_t | |
4156 | tocsave_htab_hash (const void *p) | |
4157 | { | |
4158 | const struct tocsave_entry *e = (const struct tocsave_entry *) p; | |
4159 | return ((bfd_vma)(intptr_t) e->sec ^ e->offset) >> 3; | |
4160 | } | |
4161 | ||
4162 | static int | |
4163 | tocsave_htab_eq (const void *p1, const void *p2) | |
4164 | { | |
4165 | const struct tocsave_entry *e1 = (const struct tocsave_entry *) p1; | |
4166 | const struct tocsave_entry *e2 = (const struct tocsave_entry *) p2; | |
4167 | return e1->sec == e2->sec && e1->offset == e2->offset; | |
4168 | } | |
4169 | ||
68faa637 AM |
4170 | /* Destroy a ppc64 ELF linker hash table. */ |
4171 | ||
4172 | static void | |
d495ab0d | 4173 | ppc64_elf_link_hash_table_free (bfd *obfd) |
68faa637 | 4174 | { |
d495ab0d | 4175 | struct ppc_link_hash_table *htab; |
68faa637 | 4176 | |
d495ab0d | 4177 | htab = (struct ppc_link_hash_table *) obfd->link.hash; |
68faa637 AM |
4178 | if (htab->tocsave_htab) |
4179 | htab_delete (htab->tocsave_htab); | |
d495ab0d AM |
4180 | bfd_hash_table_free (&htab->branch_hash_table); |
4181 | bfd_hash_table_free (&htab->stub_hash_table); | |
4182 | _bfd_elf_link_hash_table_free (obfd); | |
68faa637 AM |
4183 | } |
4184 | ||
65f38f15 AM |
4185 | /* Create a ppc64 ELF linker hash table. */ |
4186 | ||
4187 | static struct bfd_link_hash_table * | |
4ce794b7 | 4188 | ppc64_elf_link_hash_table_create (bfd *abfd) |
65f38f15 AM |
4189 | { |
4190 | struct ppc_link_hash_table *htab; | |
4191 | bfd_size_type amt = sizeof (struct ppc_link_hash_table); | |
4192 | ||
4ce794b7 | 4193 | htab = bfd_zmalloc (amt); |
65f38f15 AM |
4194 | if (htab == NULL) |
4195 | return NULL; | |
4196 | ||
66eb6687 | 4197 | if (!_bfd_elf_link_hash_table_init (&htab->elf, abfd, link_hash_newfunc, |
4dfe6ac6 NC |
4198 | sizeof (struct ppc_link_hash_entry), |
4199 | PPC64_ELF_DATA)) | |
65f38f15 | 4200 | { |
e2d34d7d | 4201 | free (htab); |
65f38f15 AM |
4202 | return NULL; |
4203 | } | |
4204 | ||
721956f4 | 4205 | /* Init the stub hash table too. */ |
66eb6687 AM |
4206 | if (!bfd_hash_table_init (&htab->stub_hash_table, stub_hash_newfunc, |
4207 | sizeof (struct ppc_stub_hash_entry))) | |
2915c55b | 4208 | { |
d495ab0d | 4209 | _bfd_elf_link_hash_table_free (abfd); |
2915c55b JK |
4210 | return NULL; |
4211 | } | |
721956f4 AM |
4212 | |
4213 | /* And the branch hash table. */ | |
66eb6687 AM |
4214 | if (!bfd_hash_table_init (&htab->branch_hash_table, branch_hash_newfunc, |
4215 | sizeof (struct ppc_branch_hash_entry))) | |
2915c55b JK |
4216 | { |
4217 | bfd_hash_table_free (&htab->stub_hash_table); | |
d495ab0d | 4218 | _bfd_elf_link_hash_table_free (abfd); |
2915c55b JK |
4219 | return NULL; |
4220 | } | |
721956f4 | 4221 | |
3b421ab3 AM |
4222 | htab->tocsave_htab = htab_try_create (1024, |
4223 | tocsave_htab_hash, | |
4224 | tocsave_htab_eq, | |
4225 | NULL); | |
4226 | if (htab->tocsave_htab == NULL) | |
2915c55b | 4227 | { |
d495ab0d | 4228 | ppc64_elf_link_hash_table_free (abfd); |
2915c55b JK |
4229 | return NULL; |
4230 | } | |
d495ab0d | 4231 | htab->elf.root.hash_table_free = ppc64_elf_link_hash_table_free; |
3b421ab3 | 4232 | |
3254fd24 AM |
4233 | /* Initializing two fields of the union is just cosmetic. We really |
4234 | only care about glist, but when compiled on a 32-bit host the | |
4235 | bfd_vma fields are larger. Setting the bfd_vma to zero makes | |
4236 | debugger inspection of these fields look nicer. */ | |
a6aa5195 AM |
4237 | htab->elf.init_got_refcount.refcount = 0; |
4238 | htab->elf.init_got_refcount.glist = NULL; | |
4239 | htab->elf.init_plt_refcount.refcount = 0; | |
4240 | htab->elf.init_plt_refcount.glist = NULL; | |
4241 | htab->elf.init_got_offset.offset = 0; | |
4242 | htab->elf.init_got_offset.glist = NULL; | |
4243 | htab->elf.init_plt_offset.offset = 0; | |
4244 | htab->elf.init_plt_offset.glist = NULL; | |
3254fd24 | 4245 | |
65f38f15 AM |
4246 | return &htab->elf.root; |
4247 | } | |
4248 | ||
bfeb4a28 AM |
4249 | /* Create sections for linker generated code. */ |
4250 | ||
4251 | static bfd_boolean | |
4252 | create_linkage_sections (bfd *dynobj, struct bfd_link_info *info) | |
4253 | { | |
4254 | struct ppc_link_hash_table *htab; | |
4255 | flagword flags; | |
4256 | ||
4257 | htab = ppc_hash_table (info); | |
4258 | ||
4259 | /* Create .sfpr for code to save and restore fp regs. */ | |
4260 | flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY | |
4261 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
4262 | htab->sfpr = bfd_make_section_anyway_with_flags (dynobj, ".sfpr", | |
4263 | flags); | |
4264 | if (htab->sfpr == NULL | |
4265 | || ! bfd_set_section_alignment (dynobj, htab->sfpr, 2)) | |
4266 | return FALSE; | |
4267 | ||
4268 | /* Create .glink for lazy dynamic linking support. */ | |
4269 | htab->glink = bfd_make_section_anyway_with_flags (dynobj, ".glink", | |
4270 | flags); | |
4271 | if (htab->glink == NULL | |
4272 | || ! bfd_set_section_alignment (dynobj, htab->glink, 3)) | |
4273 | return FALSE; | |
4274 | ||
4275 | if (!info->no_ld_generated_unwind_info) | |
4276 | { | |
4277 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS | |
4278 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
4279 | htab->glink_eh_frame = bfd_make_section_anyway_with_flags (dynobj, | |
4280 | ".eh_frame", | |
4281 | flags); | |
4282 | if (htab->glink_eh_frame == NULL | |
4283 | || !bfd_set_section_alignment (dynobj, htab->glink_eh_frame, 2)) | |
4284 | return FALSE; | |
4285 | } | |
4286 | ||
4287 | flags = SEC_ALLOC | SEC_LINKER_CREATED; | |
33e44f2e AM |
4288 | htab->elf.iplt = bfd_make_section_anyway_with_flags (dynobj, ".iplt", flags); |
4289 | if (htab->elf.iplt == NULL | |
4290 | || ! bfd_set_section_alignment (dynobj, htab->elf.iplt, 3)) | |
bfeb4a28 AM |
4291 | return FALSE; |
4292 | ||
4293 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | |
4294 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
33e44f2e AM |
4295 | htab->elf.irelplt |
4296 | = bfd_make_section_anyway_with_flags (dynobj, ".rela.iplt", flags); | |
4297 | if (htab->elf.irelplt == NULL | |
4298 | || ! bfd_set_section_alignment (dynobj, htab->elf.irelplt, 3)) | |
bfeb4a28 AM |
4299 | return FALSE; |
4300 | ||
4301 | /* Create branch lookup table for plt_branch stubs. */ | |
4302 | flags = (SEC_ALLOC | SEC_LOAD | |
4303 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
4304 | htab->brlt = bfd_make_section_anyway_with_flags (dynobj, ".branch_lt", | |
4305 | flags); | |
4306 | if (htab->brlt == NULL | |
4307 | || ! bfd_set_section_alignment (dynobj, htab->brlt, 3)) | |
4308 | return FALSE; | |
4309 | ||
4310 | if (!info->shared) | |
4311 | return TRUE; | |
4312 | ||
4313 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | |
4314 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
4315 | htab->relbrlt = bfd_make_section_anyway_with_flags (dynobj, | |
4316 | ".rela.branch_lt", | |
4317 | flags); | |
4318 | if (htab->relbrlt == NULL | |
4319 | || ! bfd_set_section_alignment (dynobj, htab->relbrlt, 3)) | |
4320 | return FALSE; | |
4321 | ||
4322 | return TRUE; | |
4323 | } | |
4324 | ||
e717da7e AM |
4325 | /* Satisfy the ELF linker by filling in some fields in our fake bfd. */ |
4326 | ||
bfeb4a28 | 4327 | bfd_boolean |
e7d1c40c AM |
4328 | ppc64_elf_init_stub_bfd (struct bfd_link_info *info, |
4329 | struct ppc64_elf_params *params) | |
e717da7e AM |
4330 | { |
4331 | struct ppc_link_hash_table *htab; | |
4332 | ||
e7d1c40c | 4333 | elf_elfheader (params->stub_bfd)->e_ident[EI_CLASS] = ELFCLASS64; |
e717da7e AM |
4334 | |
4335 | /* Always hook our dynamic sections into the first bfd, which is the | |
4336 | linker created stub bfd. This ensures that the GOT header is at | |
4337 | the start of the output TOC section. */ | |
4338 | htab = ppc_hash_table (info); | |
4dfe6ac6 | 4339 | if (htab == NULL) |
bfeb4a28 | 4340 | return FALSE; |
e7d1c40c AM |
4341 | htab->elf.dynobj = params->stub_bfd; |
4342 | htab->params = params; | |
bfeb4a28 AM |
4343 | |
4344 | if (info->relocatable) | |
4345 | return TRUE; | |
4346 | ||
4347 | return create_linkage_sections (htab->elf.dynobj, info); | |
e717da7e AM |
4348 | } |
4349 | ||
721956f4 AM |
4350 | /* Build a name for an entry in the stub hash table. */ |
4351 | ||
4352 | static char * | |
4ce794b7 AM |
4353 | ppc_stub_name (const asection *input_section, |
4354 | const asection *sym_sec, | |
4355 | const struct ppc_link_hash_entry *h, | |
4356 | const Elf_Internal_Rela *rel) | |
721956f4 AM |
4357 | { |
4358 | char *stub_name; | |
bcaa2f82 | 4359 | ssize_t len; |
721956f4 AM |
4360 | |
4361 | /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31 | |
4362 | offsets from a sym as a branch target? In fact, we could | |
4363 | probably assume the addend is always zero. */ | |
4364 | BFD_ASSERT (((int) rel->r_addend & 0xffffffff) == rel->r_addend); | |
4365 | ||
4366 | if (h) | |
4367 | { | |
4368 | len = 8 + 1 + strlen (h->elf.root.root.string) + 1 + 8 + 1; | |
4369 | stub_name = bfd_malloc (len); | |
46de2a7c AM |
4370 | if (stub_name == NULL) |
4371 | return stub_name; | |
4372 | ||
bcaa2f82 AM |
4373 | len = sprintf (stub_name, "%08x.%s+%x", |
4374 | input_section->id & 0xffffffff, | |
4375 | h->elf.root.root.string, | |
4376 | (int) rel->r_addend & 0xffffffff); | |
721956f4 AM |
4377 | } |
4378 | else | |
4379 | { | |
ad8e1ba5 | 4380 | len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1; |
721956f4 | 4381 | stub_name = bfd_malloc (len); |
46de2a7c AM |
4382 | if (stub_name == NULL) |
4383 | return stub_name; | |
4384 | ||
bcaa2f82 AM |
4385 | len = sprintf (stub_name, "%08x.%x:%x+%x", |
4386 | input_section->id & 0xffffffff, | |
4387 | sym_sec->id & 0xffffffff, | |
4388 | (int) ELF64_R_SYM (rel->r_info) & 0xffffffff, | |
4389 | (int) rel->r_addend & 0xffffffff); | |
721956f4 | 4390 | } |
bcaa2f82 | 4391 | if (len > 2 && stub_name[len - 2] == '+' && stub_name[len - 1] == '0') |
ee75fd95 | 4392 | stub_name[len - 2] = 0; |
721956f4 AM |
4393 | return stub_name; |
4394 | } | |
4395 | ||
4396 | /* Look up an entry in the stub hash. Stub entries are cached because | |
4397 | creating the stub name takes a bit of time. */ | |
4398 | ||
4399 | static struct ppc_stub_hash_entry * | |
4ce794b7 AM |
4400 | ppc_get_stub_entry (const asection *input_section, |
4401 | const asection *sym_sec, | |
039b3fef | 4402 | struct ppc_link_hash_entry *h, |
4ce794b7 AM |
4403 | const Elf_Internal_Rela *rel, |
4404 | struct ppc_link_hash_table *htab) | |
721956f4 AM |
4405 | { |
4406 | struct ppc_stub_hash_entry *stub_entry; | |
721956f4 AM |
4407 | const asection *id_sec; |
4408 | ||
4409 | /* If this input section is part of a group of sections sharing one | |
4410 | stub section, then use the id of the first section in the group. | |
4411 | Stub names need to include a section id, as there may well be | |
4412 | more than one stub used to reach say, printf, and we need to | |
4413 | distinguish between them. */ | |
4414 | id_sec = htab->stub_group[input_section->id].link_sec; | |
4415 | ||
b3fac117 AM |
4416 | if (h != NULL && h->u.stub_cache != NULL |
4417 | && h->u.stub_cache->h == h | |
4418 | && h->u.stub_cache->id_sec == id_sec) | |
721956f4 | 4419 | { |
b3fac117 | 4420 | stub_entry = h->u.stub_cache; |
721956f4 AM |
4421 | } |
4422 | else | |
4423 | { | |
4424 | char *stub_name; | |
4425 | ||
4426 | stub_name = ppc_stub_name (id_sec, sym_sec, h, rel); | |
4427 | if (stub_name == NULL) | |
4428 | return NULL; | |
4429 | ||
4430 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, | |
b34976b6 | 4431 | stub_name, FALSE, FALSE); |
721956f4 | 4432 | if (h != NULL) |
b3fac117 | 4433 | h->u.stub_cache = stub_entry; |
721956f4 AM |
4434 | |
4435 | free (stub_name); | |
4436 | } | |
4437 | ||
4438 | return stub_entry; | |
4439 | } | |
4440 | ||
4441 | /* Add a new stub entry to the stub hash. Not all fields of the new | |
4442 | stub entry are initialised. */ | |
4443 | ||
4444 | static struct ppc_stub_hash_entry * | |
4ce794b7 AM |
4445 | ppc_add_stub (const char *stub_name, |
4446 | asection *section, | |
25f53a85 | 4447 | struct bfd_link_info *info) |
721956f4 | 4448 | { |
25f53a85 | 4449 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
721956f4 AM |
4450 | asection *link_sec; |
4451 | asection *stub_sec; | |
4452 | struct ppc_stub_hash_entry *stub_entry; | |
4453 | ||
4454 | link_sec = htab->stub_group[section->id].link_sec; | |
4455 | stub_sec = htab->stub_group[section->id].stub_sec; | |
4456 | if (stub_sec == NULL) | |
4457 | { | |
4458 | stub_sec = htab->stub_group[link_sec->id].stub_sec; | |
4459 | if (stub_sec == NULL) | |
4460 | { | |
d4c88bbb | 4461 | size_t namelen; |
721956f4 AM |
4462 | bfd_size_type len; |
4463 | char *s_name; | |
4464 | ||
d4c88bbb AM |
4465 | namelen = strlen (link_sec->name); |
4466 | len = namelen + sizeof (STUB_SUFFIX); | |
e7d1c40c | 4467 | s_name = bfd_alloc (htab->params->stub_bfd, len); |
721956f4 AM |
4468 | if (s_name == NULL) |
4469 | return NULL; | |
4470 | ||
d4c88bbb AM |
4471 | memcpy (s_name, link_sec->name, namelen); |
4472 | memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX)); | |
e7d1c40c | 4473 | stub_sec = (*htab->params->add_stub_section) (s_name, link_sec); |
721956f4 AM |
4474 | if (stub_sec == NULL) |
4475 | return NULL; | |
4476 | htab->stub_group[link_sec->id].stub_sec = stub_sec; | |
4477 | } | |
4478 | htab->stub_group[section->id].stub_sec = stub_sec; | |
4479 | } | |
4480 | ||
4481 | /* Enter this entry into the linker stub hash table. */ | |
4482 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, stub_name, | |
b34976b6 | 4483 | TRUE, FALSE); |
721956f4 AM |
4484 | if (stub_entry == NULL) |
4485 | { | |
8de848d8 | 4486 | info->callbacks->einfo (_("%P: %B: cannot create stub entry %s\n"), |
25f53a85 | 4487 | section->owner, stub_name); |
721956f4 AM |
4488 | return NULL; |
4489 | } | |
4490 | ||
4491 | stub_entry->stub_sec = stub_sec; | |
4492 | stub_entry->stub_offset = 0; | |
4493 | stub_entry->id_sec = link_sec; | |
4494 | return stub_entry; | |
4495 | } | |
4496 | ||
e717da7e AM |
4497 | /* Create .got and .rela.got sections in ABFD, and .got in dynobj if |
4498 | not already done. */ | |
65f38f15 | 4499 | |
b34976b6 | 4500 | static bfd_boolean |
e717da7e | 4501 | create_got_section (bfd *abfd, struct bfd_link_info *info) |
65f38f15 | 4502 | { |
e717da7e AM |
4503 | asection *got, *relgot; |
4504 | flagword flags; | |
4505 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
65f38f15 | 4506 | |
0c8d6e5c | 4507 | if (!is_ppc64_elf (abfd)) |
0ffa91dd | 4508 | return FALSE; |
4dfe6ac6 NC |
4509 | if (htab == NULL) |
4510 | return FALSE; | |
0ffa91dd | 4511 | |
33e44f2e AM |
4512 | if (!htab->elf.sgot |
4513 | && !_bfd_elf_create_got_section (htab->elf.dynobj, info)) | |
4514 | return FALSE; | |
e717da7e AM |
4515 | |
4516 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY | |
4517 | | SEC_LINKER_CREATED); | |
4518 | ||
c456f082 | 4519 | got = bfd_make_section_anyway_with_flags (abfd, ".got", flags); |
e717da7e | 4520 | if (!got |
e717da7e AM |
4521 | || !bfd_set_section_alignment (abfd, got, 3)) |
4522 | return FALSE; | |
65f38f15 | 4523 | |
c456f082 AM |
4524 | relgot = bfd_make_section_anyway_with_flags (abfd, ".rela.got", |
4525 | flags | SEC_READONLY); | |
e717da7e | 4526 | if (!relgot |
e717da7e | 4527 | || ! bfd_set_section_alignment (abfd, relgot, 3)) |
b34976b6 | 4528 | return FALSE; |
e717da7e AM |
4529 | |
4530 | ppc64_elf_tdata (abfd)->got = got; | |
4531 | ppc64_elf_tdata (abfd)->relgot = relgot; | |
b34976b6 | 4532 | return TRUE; |
65f38f15 | 4533 | } |
5bd4f169 | 4534 | |
82bd7b59 | 4535 | /* Create the dynamic sections, and set up shortcuts. */ |
5bd4f169 | 4536 | |
b34976b6 | 4537 | static bfd_boolean |
4ce794b7 | 4538 | ppc64_elf_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info) |
5bd4f169 | 4539 | { |
65f38f15 | 4540 | struct ppc_link_hash_table *htab; |
5bd4f169 | 4541 | |
65f38f15 | 4542 | if (!_bfd_elf_create_dynamic_sections (dynobj, info)) |
b34976b6 | 4543 | return FALSE; |
65f38f15 | 4544 | |
e717da7e | 4545 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
4546 | if (htab == NULL) |
4547 | return FALSE; | |
4548 | ||
3d4d4302 | 4549 | htab->dynbss = bfd_get_linker_section (dynobj, ".dynbss"); |
65f38f15 | 4550 | if (!info->shared) |
3d4d4302 | 4551 | htab->relbss = bfd_get_linker_section (dynobj, ".rela.bss"); |
65f38f15 | 4552 | |
33e44f2e | 4553 | if (!htab->elf.sgot || !htab->elf.splt || !htab->elf.srelplt || !htab->dynbss |
4ce794b7 | 4554 | || (!info->shared && !htab->relbss)) |
65f38f15 AM |
4555 | abort (); |
4556 | ||
b34976b6 | 4557 | return TRUE; |
5bd4f169 AM |
4558 | } |
4559 | ||
b31867b6 AM |
4560 | /* Follow indirect and warning symbol links. */ |
4561 | ||
4562 | static inline struct bfd_link_hash_entry * | |
4563 | follow_link (struct bfd_link_hash_entry *h) | |
4564 | { | |
4565 | while (h->type == bfd_link_hash_indirect | |
4566 | || h->type == bfd_link_hash_warning) | |
4567 | h = h->u.i.link; | |
4568 | return h; | |
4569 | } | |
4570 | ||
4571 | static inline struct elf_link_hash_entry * | |
4572 | elf_follow_link (struct elf_link_hash_entry *h) | |
4573 | { | |
4574 | return (struct elf_link_hash_entry *) follow_link (&h->root); | |
4575 | } | |
4576 | ||
4577 | static inline struct ppc_link_hash_entry * | |
4578 | ppc_follow_link (struct ppc_link_hash_entry *h) | |
4579 | { | |
4580 | return (struct ppc_link_hash_entry *) follow_link (&h->elf.root); | |
4581 | } | |
4582 | ||
40d16e0b AM |
4583 | /* Merge PLT info on FROM with that on TO. */ |
4584 | ||
4585 | static void | |
4586 | move_plt_plist (struct ppc_link_hash_entry *from, | |
4587 | struct ppc_link_hash_entry *to) | |
4588 | { | |
4589 | if (from->elf.plt.plist != NULL) | |
4590 | { | |
4591 | if (to->elf.plt.plist != NULL) | |
4592 | { | |
4593 | struct plt_entry **entp; | |
4594 | struct plt_entry *ent; | |
4595 | ||
4596 | for (entp = &from->elf.plt.plist; (ent = *entp) != NULL; ) | |
4597 | { | |
4598 | struct plt_entry *dent; | |
4599 | ||
4600 | for (dent = to->elf.plt.plist; dent != NULL; dent = dent->next) | |
4601 | if (dent->addend == ent->addend) | |
4602 | { | |
4603 | dent->plt.refcount += ent->plt.refcount; | |
4604 | *entp = ent->next; | |
4605 | break; | |
4606 | } | |
4607 | if (dent == NULL) | |
4608 | entp = &ent->next; | |
4609 | } | |
4610 | *entp = to->elf.plt.plist; | |
4611 | } | |
4612 | ||
4613 | to->elf.plt.plist = from->elf.plt.plist; | |
4614 | from->elf.plt.plist = NULL; | |
4615 | } | |
4616 | } | |
4617 | ||
65f38f15 AM |
4618 | /* Copy the extra info we tack onto an elf_link_hash_entry. */ |
4619 | ||
4620 | static void | |
fcfa13d2 AM |
4621 | ppc64_elf_copy_indirect_symbol (struct bfd_link_info *info, |
4622 | struct elf_link_hash_entry *dir, | |
4623 | struct elf_link_hash_entry *ind) | |
65f38f15 AM |
4624 | { |
4625 | struct ppc_link_hash_entry *edir, *eind; | |
4626 | ||
4627 | edir = (struct ppc_link_hash_entry *) dir; | |
4628 | eind = (struct ppc_link_hash_entry *) ind; | |
4629 | ||
c79d6685 AM |
4630 | edir->is_func |= eind->is_func; |
4631 | edir->is_func_descriptor |= eind->is_func_descriptor; | |
4632 | edir->tls_mask |= eind->tls_mask; | |
4633 | if (eind->oh != NULL) | |
4634 | edir->oh = ppc_follow_link (eind->oh); | |
4635 | ||
4636 | /* If called to transfer flags for a weakdef during processing | |
4637 | of elf_adjust_dynamic_symbol, don't copy NON_GOT_REF. | |
4638 | We clear it ourselves for ELIMINATE_COPY_RELOCS. */ | |
4639 | if (!(ELIMINATE_COPY_RELOCS | |
4640 | && eind->elf.root.type != bfd_link_hash_indirect | |
4641 | && edir->elf.dynamic_adjusted)) | |
4642 | edir->elf.non_got_ref |= eind->elf.non_got_ref; | |
4643 | ||
4644 | edir->elf.ref_dynamic |= eind->elf.ref_dynamic; | |
4645 | edir->elf.ref_regular |= eind->elf.ref_regular; | |
4646 | edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak; | |
4647 | edir->elf.needs_plt |= eind->elf.needs_plt; | |
a345bc8d | 4648 | edir->elf.pointer_equality_needed |= eind->elf.pointer_equality_needed; |
c79d6685 | 4649 | |
411e1bfb | 4650 | /* Copy over any dynamic relocs we may have on the indirect sym. */ |
bbd7ec4a | 4651 | if (eind->dyn_relocs != NULL) |
65f38f15 | 4652 | { |
bbd7ec4a AM |
4653 | if (edir->dyn_relocs != NULL) |
4654 | { | |
6061a67d AM |
4655 | struct elf_dyn_relocs **pp; |
4656 | struct elf_dyn_relocs *p; | |
bbd7ec4a | 4657 | |
fcfa13d2 | 4658 | /* Add reloc counts against the indirect sym to the direct sym |
bbd7ec4a AM |
4659 | list. Merge any entries against the same section. */ |
4660 | for (pp = &eind->dyn_relocs; (p = *pp) != NULL; ) | |
4661 | { | |
6061a67d | 4662 | struct elf_dyn_relocs *q; |
bbd7ec4a AM |
4663 | |
4664 | for (q = edir->dyn_relocs; q != NULL; q = q->next) | |
4665 | if (q->sec == p->sec) | |
4666 | { | |
4667 | q->pc_count += p->pc_count; | |
4668 | q->count += p->count; | |
4669 | *pp = p->next; | |
4670 | break; | |
4671 | } | |
4672 | if (q == NULL) | |
4673 | pp = &p->next; | |
4674 | } | |
4675 | *pp = edir->dyn_relocs; | |
4676 | } | |
4677 | ||
65f38f15 AM |
4678 | edir->dyn_relocs = eind->dyn_relocs; |
4679 | eind->dyn_relocs = NULL; | |
4680 | } | |
65f38f15 | 4681 | |
68ba6d40 AM |
4682 | /* If we were called to copy over info for a weak sym, that's all. |
4683 | You might think dyn_relocs need not be copied over; After all, | |
4684 | both syms will be dynamic or both non-dynamic so we're just | |
68ffbac6 | 4685 | moving reloc accounting around. However, ELIMINATE_COPY_RELOCS |
68ba6d40 AM |
4686 | code in ppc64_elf_adjust_dynamic_symbol needs to check for |
4687 | dyn_relocs in read-only sections, and it does so on what is the | |
4688 | DIR sym here. */ | |
4689 | if (eind->elf.root.type != bfd_link_hash_indirect) | |
4690 | return; | |
4691 | ||
81848ca0 AM |
4692 | /* Copy over got entries that we may have already seen to the |
4693 | symbol which just became indirect. */ | |
411e1bfb AM |
4694 | if (eind->elf.got.glist != NULL) |
4695 | { | |
4696 | if (edir->elf.got.glist != NULL) | |
4697 | { | |
4698 | struct got_entry **entp; | |
4699 | struct got_entry *ent; | |
4700 | ||
4701 | for (entp = &eind->elf.got.glist; (ent = *entp) != NULL; ) | |
4702 | { | |
4703 | struct got_entry *dent; | |
4704 | ||
4705 | for (dent = edir->elf.got.glist; dent != NULL; dent = dent->next) | |
4706 | if (dent->addend == ent->addend | |
e717da7e | 4707 | && dent->owner == ent->owner |
411e1bfb AM |
4708 | && dent->tls_type == ent->tls_type) |
4709 | { | |
4710 | dent->got.refcount += ent->got.refcount; | |
4711 | *entp = ent->next; | |
4712 | break; | |
4713 | } | |
4714 | if (dent == NULL) | |
4715 | entp = &ent->next; | |
4716 | } | |
4717 | *entp = edir->elf.got.glist; | |
4718 | } | |
4719 | ||
4720 | edir->elf.got.glist = eind->elf.got.glist; | |
4721 | eind->elf.got.glist = NULL; | |
4722 | } | |
4723 | ||
4724 | /* And plt entries. */ | |
40d16e0b | 4725 | move_plt_plist (eind, edir); |
411e1bfb | 4726 | |
fcfa13d2 | 4727 | if (eind->elf.dynindx != -1) |
411e1bfb | 4728 | { |
fcfa13d2 AM |
4729 | if (edir->elf.dynindx != -1) |
4730 | _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr, | |
4731 | edir->elf.dynstr_index); | |
411e1bfb AM |
4732 | edir->elf.dynindx = eind->elf.dynindx; |
4733 | edir->elf.dynstr_index = eind->elf.dynstr_index; | |
4734 | eind->elf.dynindx = -1; | |
4735 | eind->elf.dynstr_index = 0; | |
4736 | } | |
411e1bfb AM |
4737 | } |
4738 | ||
8387904d AM |
4739 | /* Find the function descriptor hash entry from the given function code |
4740 | hash entry FH. Link the entries via their OH fields. */ | |
4741 | ||
4742 | static struct ppc_link_hash_entry * | |
b31867b6 | 4743 | lookup_fdh (struct ppc_link_hash_entry *fh, struct ppc_link_hash_table *htab) |
8387904d AM |
4744 | { |
4745 | struct ppc_link_hash_entry *fdh = fh->oh; | |
4746 | ||
4747 | if (fdh == NULL) | |
4748 | { | |
4749 | const char *fd_name = fh->elf.root.root.string + 1; | |
4750 | ||
4751 | fdh = (struct ppc_link_hash_entry *) | |
4752 | elf_link_hash_lookup (&htab->elf, fd_name, FALSE, FALSE, FALSE); | |
b31867b6 AM |
4753 | if (fdh == NULL) |
4754 | return fdh; | |
4755 | ||
4756 | fdh->is_func_descriptor = 1; | |
4757 | fdh->oh = fh; | |
4758 | fh->is_func = 1; | |
4759 | fh->oh = fdh; | |
8387904d AM |
4760 | } |
4761 | ||
b31867b6 | 4762 | return ppc_follow_link (fdh); |
8387904d AM |
4763 | } |
4764 | ||
bb700d78 AM |
4765 | /* Make a fake function descriptor sym for the code sym FH. */ |
4766 | ||
4767 | static struct ppc_link_hash_entry * | |
4768 | make_fdh (struct bfd_link_info *info, | |
908b32fc | 4769 | struct ppc_link_hash_entry *fh) |
bb700d78 AM |
4770 | { |
4771 | bfd *abfd; | |
4772 | asymbol *newsym; | |
4773 | struct bfd_link_hash_entry *bh; | |
4774 | struct ppc_link_hash_entry *fdh; | |
4775 | ||
4776 | abfd = fh->elf.root.u.undef.abfd; | |
4777 | newsym = bfd_make_empty_symbol (abfd); | |
4778 | newsym->name = fh->elf.root.root.string + 1; | |
4779 | newsym->section = bfd_und_section_ptr; | |
4780 | newsym->value = 0; | |
908b32fc | 4781 | newsym->flags = BSF_WEAK; |
bb700d78 AM |
4782 | |
4783 | bh = NULL; | |
4784 | if (!_bfd_generic_link_add_one_symbol (info, abfd, newsym->name, | |
4785 | newsym->flags, newsym->section, | |
4786 | newsym->value, NULL, FALSE, FALSE, | |
4787 | &bh)) | |
4788 | return NULL; | |
4789 | ||
4790 | fdh = (struct ppc_link_hash_entry *) bh; | |
4791 | fdh->elf.non_elf = 0; | |
908b32fc AM |
4792 | fdh->fake = 1; |
4793 | fdh->is_func_descriptor = 1; | |
4794 | fdh->oh = fh; | |
4795 | fh->is_func = 1; | |
4796 | fh->oh = fdh; | |
bb700d78 AM |
4797 | return fdh; |
4798 | } | |
4799 | ||
8387904d AM |
4800 | /* Fix function descriptor symbols defined in .opd sections to be |
4801 | function type. */ | |
555cd476 AM |
4802 | |
4803 | static bfd_boolean | |
c16153ae | 4804 | ppc64_elf_add_symbol_hook (bfd *ibfd, |
e054468f | 4805 | struct bfd_link_info *info, |
555cd476 | 4806 | Elf_Internal_Sym *isym, |
6911b7dc | 4807 | const char **name, |
555cd476 AM |
4808 | flagword *flags ATTRIBUTE_UNUSED, |
4809 | asection **sec, | |
b53dfeb2 | 4810 | bfd_vma *value) |
555cd476 | 4811 | { |
f1885d1e AM |
4812 | if ((ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC |
4813 | || ELF_ST_BIND (isym->st_info) == STB_GNU_UNIQUE) | |
4814 | && (ibfd->flags & DYNAMIC) == 0 | |
4815 | && bfd_get_flavour (info->output_bfd) == bfd_target_elf_flavour) | |
f64b2e8d NC |
4816 | elf_tdata (info->output_bfd)->has_gnu_symbols = TRUE; |
4817 | ||
b53dfeb2 | 4818 | if (*sec != NULL |
f1885d1e | 4819 | && strcmp ((*sec)->name, ".opd") == 0) |
b53dfeb2 AM |
4820 | { |
4821 | asection *code_sec; | |
4822 | ||
4823 | if (!(ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC | |
4824 | || ELF_ST_TYPE (isym->st_info) == STT_FUNC)) | |
4825 | isym->st_info = ELF_ST_INFO (ELF_ST_BIND (isym->st_info), STT_FUNC); | |
4826 | ||
4827 | /* If the symbol is a function defined in .opd, and the function | |
4828 | code is in a discarded group, let it appear to be undefined. */ | |
4829 | if (!info->relocatable | |
4830 | && (*sec)->reloc_count != 0 | |
4831 | && opd_entry_value (*sec, *value, &code_sec, NULL, | |
4832 | FALSE) != (bfd_vma) -1 | |
4833 | && discarded_section (code_sec)) | |
4834 | { | |
4835 | *sec = bfd_und_section_ptr; | |
4836 | isym->st_shndx = SHN_UNDEF; | |
4837 | } | |
4838 | } | |
dbd1e97e AM |
4839 | else if (*sec != NULL |
4840 | && strcmp ((*sec)->name, ".toc") == 0 | |
4841 | && ELF_ST_TYPE (isym->st_info) == STT_OBJECT) | |
4842 | { | |
4843 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
4844 | if (htab != NULL) | |
4845 | htab->params->object_in_toc = 1; | |
4846 | } | |
433817dd | 4847 | |
6911b7dc AM |
4848 | if ((STO_PPC64_LOCAL_MASK & isym->st_other) != 0) |
4849 | { | |
4850 | if (abiversion (ibfd) == 0) | |
4851 | set_abiversion (ibfd, 2); | |
4852 | else if (abiversion (ibfd) == 1) | |
4853 | { | |
4854 | info->callbacks->einfo (_("%P: symbol '%s' has invalid st_other" | |
4855 | " for ABI version 1\n"), name); | |
4856 | bfd_set_error (bfd_error_bad_value); | |
4857 | return FALSE; | |
4858 | } | |
4859 | } | |
4860 | ||
555cd476 AM |
4861 | return TRUE; |
4862 | } | |
4863 | ||
6911b7dc AM |
4864 | /* Merge non-visibility st_other attributes: local entry point. */ |
4865 | ||
4866 | static void | |
4867 | ppc64_elf_merge_symbol_attribute (struct elf_link_hash_entry *h, | |
4868 | const Elf_Internal_Sym *isym, | |
4869 | bfd_boolean definition, | |
4870 | bfd_boolean dynamic) | |
4871 | { | |
4872 | if (definition && !dynamic) | |
4873 | h->other = ((isym->st_other & ~ELF_ST_VISIBILITY (-1)) | |
4874 | | ELF_ST_VISIBILITY (h->other)); | |
4875 | } | |
4876 | ||
8387904d | 4877 | /* This function makes an old ABI object reference to ".bar" cause the |
908b32fc AM |
4878 | inclusion of a new ABI object archive that defines "bar". |
4879 | NAME is a symbol defined in an archive. Return a symbol in the hash | |
4880 | table that might be satisfied by the archive symbols. */ | |
8387904d AM |
4881 | |
4882 | static struct elf_link_hash_entry * | |
4883 | ppc64_elf_archive_symbol_lookup (bfd *abfd, | |
4884 | struct bfd_link_info *info, | |
4885 | const char *name) | |
4886 | { | |
4887 | struct elf_link_hash_entry *h; | |
4888 | char *dot_name; | |
4889 | size_t len; | |
4890 | ||
4891 | h = _bfd_elf_archive_symbol_lookup (abfd, info, name); | |
908b32fc AM |
4892 | if (h != NULL |
4893 | /* Don't return this sym if it is a fake function descriptor | |
4894 | created by add_symbol_adjust. */ | |
4895 | && !(h->root.type == bfd_link_hash_undefweak | |
4896 | && ((struct ppc_link_hash_entry *) h)->fake)) | |
8387904d AM |
4897 | return h; |
4898 | ||
4899 | if (name[0] == '.') | |
4900 | return h; | |
4901 | ||
4902 | len = strlen (name); | |
4903 | dot_name = bfd_alloc (abfd, len + 2); | |
4904 | if (dot_name == NULL) | |
4905 | return (struct elf_link_hash_entry *) 0 - 1; | |
4906 | dot_name[0] = '.'; | |
4907 | memcpy (dot_name + 1, name, len + 1); | |
4908 | h = _bfd_elf_archive_symbol_lookup (abfd, info, dot_name); | |
4909 | bfd_release (abfd, dot_name); | |
4910 | return h; | |
4911 | } | |
4912 | ||
4913 | /* This function satisfies all old ABI object references to ".bar" if a | |
99877b66 AM |
4914 | new ABI object defines "bar". Well, at least, undefined dot symbols |
4915 | are made weak. This stops later archive searches from including an | |
4916 | object if we already have a function descriptor definition. It also | |
35b0ce59 AM |
4917 | prevents the linker complaining about undefined symbols. |
4918 | We also check and correct mismatched symbol visibility here. The | |
4919 | most restrictive visibility of the function descriptor and the | |
4920 | function entry symbol is used. */ | |
8387904d AM |
4921 | |
4922 | static bfd_boolean | |
b3fac117 | 4923 | add_symbol_adjust (struct ppc_link_hash_entry *eh, struct bfd_link_info *info) |
8387904d | 4924 | { |
8387904d AM |
4925 | struct ppc_link_hash_table *htab; |
4926 | struct ppc_link_hash_entry *fdh; | |
4927 | ||
b3fac117 | 4928 | if (eh->elf.root.type == bfd_link_hash_indirect) |
8387904d AM |
4929 | return TRUE; |
4930 | ||
b3fac117 AM |
4931 | if (eh->elf.root.type == bfd_link_hash_warning) |
4932 | eh = (struct ppc_link_hash_entry *) eh->elf.root.u.i.link; | |
8387904d | 4933 | |
b3fac117 AM |
4934 | if (eh->elf.root.root.string[0] != '.') |
4935 | abort (); | |
8387904d | 4936 | |
b3fac117 | 4937 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
4938 | if (htab == NULL) |
4939 | return FALSE; | |
4940 | ||
b31867b6 AM |
4941 | fdh = lookup_fdh (eh, htab); |
4942 | if (fdh == NULL) | |
4943 | { | |
4944 | if (!info->relocatable | |
4945 | && (eh->elf.root.type == bfd_link_hash_undefined | |
4946 | || eh->elf.root.type == bfd_link_hash_undefweak) | |
4947 | && eh->elf.ref_regular) | |
4948 | { | |
4949 | /* Make an undefweak function descriptor sym, which is enough to | |
4950 | pull in an --as-needed shared lib, but won't cause link | |
4951 | errors. Archives are handled elsewhere. */ | |
4952 | fdh = make_fdh (info, eh); | |
4953 | if (fdh == NULL) | |
4954 | return FALSE; | |
4955 | fdh->elf.ref_regular = 1; | |
4956 | } | |
bb700d78 | 4957 | } |
b31867b6 | 4958 | else |
8387904d | 4959 | { |
35b0ce59 AM |
4960 | unsigned entry_vis = ELF_ST_VISIBILITY (eh->elf.other) - 1; |
4961 | unsigned descr_vis = ELF_ST_VISIBILITY (fdh->elf.other) - 1; | |
4962 | if (entry_vis < descr_vis) | |
4963 | fdh->elf.other += entry_vis - descr_vis; | |
4964 | else if (entry_vis > descr_vis) | |
4965 | eh->elf.other += descr_vis - entry_vis; | |
4966 | ||
e87d886e AM |
4967 | if ((fdh->elf.root.type == bfd_link_hash_defined |
4968 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
4969 | && eh->elf.root.type == bfd_link_hash_undefined) | |
35b0ce59 AM |
4970 | { |
4971 | eh->elf.root.type = bfd_link_hash_undefweak; | |
4972 | eh->was_undefined = 1; | |
4973 | htab->twiddled_syms = 1; | |
4974 | } | |
8387904d | 4975 | } |
99877b66 | 4976 | |
8387904d AM |
4977 | return TRUE; |
4978 | } | |
4979 | ||
f6c7c3e8 AM |
4980 | /* Set up opd section info and abiversion for IBFD, and process list |
4981 | of dot-symbols we made in link_hash_newfunc. */ | |
b3fac117 | 4982 | |
8387904d | 4983 | static bfd_boolean |
f6c7c3e8 | 4984 | ppc64_elf_before_check_relocs (bfd *ibfd, struct bfd_link_info *info) |
8387904d | 4985 | { |
99877b66 | 4986 | struct ppc_link_hash_table *htab; |
b3fac117 | 4987 | struct ppc_link_hash_entry **p, *eh; |
459609d6 | 4988 | asection *opd = bfd_get_section_by_name (ibfd, ".opd"); |
433817dd | 4989 | |
459609d6 | 4990 | if (opd != NULL && opd->size != 0) |
b3fac117 | 4991 | { |
459609d6 AM |
4992 | if (abiversion (ibfd) == 0) |
4993 | set_abiversion (ibfd, 1); | |
4994 | else if (abiversion (ibfd) == 2) | |
f6c7c3e8 | 4995 | { |
459609d6 AM |
4996 | info->callbacks->einfo (_("%P: %B .opd not allowed in ABI" |
4997 | " version %d\n"), | |
4998 | ibfd, abiversion (ibfd)); | |
4999 | bfd_set_error (bfd_error_bad_value); | |
5000 | return FALSE; | |
f6c7c3e8 AM |
5001 | } |
5002 | ||
459609d6 AM |
5003 | if ((ibfd->flags & DYNAMIC) == 0 |
5004 | && (opd->flags & SEC_RELOC) != 0 | |
5005 | && opd->reloc_count != 0 | |
5006 | && !bfd_is_abs_section (opd->output_section)) | |
b3fac117 | 5007 | { |
459609d6 AM |
5008 | /* Garbage collection needs some extra help with .opd sections. |
5009 | We don't want to necessarily keep everything referenced by | |
5010 | relocs in .opd, as that would keep all functions. Instead, | |
5011 | if we reference an .opd symbol (a function descriptor), we | |
5012 | want to keep the function code symbol's section. This is | |
5013 | easy for global symbols, but for local syms we need to keep | |
5014 | information about the associated function section. */ | |
5015 | bfd_size_type amt; | |
5016 | asection **opd_sym_map; | |
5017 | ||
51aecdc5 | 5018 | amt = OPD_NDX (opd->size) * sizeof (*opd_sym_map); |
459609d6 AM |
5019 | opd_sym_map = bfd_zalloc (ibfd, amt); |
5020 | if (opd_sym_map == NULL) | |
b3fac117 | 5021 | return FALSE; |
459609d6 AM |
5022 | ppc64_elf_section_data (opd)->u.opd.func_sec = opd_sym_map; |
5023 | BFD_ASSERT (ppc64_elf_section_data (opd)->sec_type == sec_normal); | |
5024 | ppc64_elf_section_data (opd)->sec_type = sec_opd; | |
b3fac117 AM |
5025 | } |
5026 | } | |
5027 | ||
459609d6 AM |
5028 | if (!is_ppc64_elf (info->output_bfd)) |
5029 | return TRUE; | |
5030 | htab = ppc_hash_table (info); | |
5031 | if (htab == NULL) | |
5032 | return FALSE; | |
5033 | ||
5034 | /* For input files without an explicit abiversion in e_flags | |
5035 | we should have flagged any with symbol st_other bits set | |
5036 | as ELFv1 and above flagged those with .opd as ELFv2. | |
5037 | Set the output abiversion if not yet set, and for any input | |
5038 | still ambiguous, take its abiversion from the output. | |
5039 | Differences in ABI are reported later. */ | |
5040 | if (abiversion (info->output_bfd) == 0) | |
5041 | set_abiversion (info->output_bfd, abiversion (ibfd)); | |
5042 | else if (abiversion (ibfd) == 0) | |
5043 | set_abiversion (ibfd, abiversion (info->output_bfd)); | |
5044 | ||
5045 | p = &htab->dot_syms; | |
5046 | while ((eh = *p) != NULL) | |
5047 | { | |
5048 | *p = NULL; | |
5049 | if (&eh->elf == htab->elf.hgot) | |
5050 | ; | |
5051 | else if (htab->elf.hgot == NULL | |
5052 | && strcmp (eh->elf.root.root.string, ".TOC.") == 0) | |
5053 | htab->elf.hgot = &eh->elf; | |
5054 | else if (!add_symbol_adjust (eh, info)) | |
5055 | return FALSE; | |
5056 | p = &eh->u.next_dot_sym; | |
5057 | } | |
5058 | ||
b3fac117 AM |
5059 | /* Clear the list for non-ppc64 input files. */ |
5060 | p = &htab->dot_syms; | |
5061 | while ((eh = *p) != NULL) | |
5062 | { | |
5063 | *p = NULL; | |
5064 | p = &eh->u.next_dot_sym; | |
5065 | } | |
99877b66 AM |
5066 | |
5067 | /* We need to fix the undefs list for any syms we have twiddled to | |
5068 | undef_weak. */ | |
5069 | if (htab->twiddled_syms) | |
5070 | { | |
77cfaee6 | 5071 | bfd_link_repair_undef_list (&htab->elf.root); |
99877b66 AM |
5072 | htab->twiddled_syms = 0; |
5073 | } | |
b3fac117 | 5074 | return TRUE; |
8387904d AM |
5075 | } |
5076 | ||
97fed1c9 JJ |
5077 | /* Undo hash table changes when an --as-needed input file is determined |
5078 | not to be needed. */ | |
5079 | ||
5080 | static bfd_boolean | |
e5034e59 AM |
5081 | ppc64_elf_notice_as_needed (bfd *ibfd, |
5082 | struct bfd_link_info *info, | |
5083 | enum notice_asneeded_action act) | |
97fed1c9 | 5084 | { |
e5034e59 AM |
5085 | if (act == notice_not_needed) |
5086 | { | |
5087 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
4dfe6ac6 | 5088 | |
e5034e59 AM |
5089 | if (htab == NULL) |
5090 | return FALSE; | |
4dfe6ac6 | 5091 | |
e5034e59 AM |
5092 | htab->dot_syms = NULL; |
5093 | } | |
5094 | return _bfd_elf_notice_as_needed (ibfd, info, act); | |
97fed1c9 JJ |
5095 | } |
5096 | ||
aa374f67 AM |
5097 | /* If --just-symbols against a final linked binary, then assume we need |
5098 | toc adjusting stubs when calling functions defined there. */ | |
5099 | ||
5100 | static void | |
5101 | ppc64_elf_link_just_syms (asection *sec, struct bfd_link_info *info) | |
5102 | { | |
5103 | if ((sec->flags & SEC_CODE) != 0 | |
5104 | && (sec->owner->flags & (EXEC_P | DYNAMIC)) != 0 | |
5105 | && is_ppc64_elf (sec->owner)) | |
5106 | { | |
2c3f079f AM |
5107 | if (abiversion (sec->owner) >= 2 |
5108 | || bfd_get_section_by_name (sec->owner, ".opd") != NULL) | |
aa374f67 AM |
5109 | sec->has_toc_reloc = 1; |
5110 | } | |
5111 | _bfd_elf_link_just_syms (sec, info); | |
5112 | } | |
5113 | ||
e054468f | 5114 | static struct plt_entry ** |
4ce794b7 AM |
5115 | update_local_sym_info (bfd *abfd, Elf_Internal_Shdr *symtab_hdr, |
5116 | unsigned long r_symndx, bfd_vma r_addend, int tls_type) | |
411e1bfb AM |
5117 | { |
5118 | struct got_entry **local_got_ents = elf_local_got_ents (abfd); | |
e054468f | 5119 | struct plt_entry **local_plt; |
f961d9dd | 5120 | unsigned char *local_got_tls_masks; |
411e1bfb AM |
5121 | |
5122 | if (local_got_ents == NULL) | |
5123 | { | |
5124 | bfd_size_type size = symtab_hdr->sh_info; | |
5125 | ||
e054468f AM |
5126 | size *= (sizeof (*local_got_ents) |
5127 | + sizeof (*local_plt) | |
5128 | + sizeof (*local_got_tls_masks)); | |
4ce794b7 | 5129 | local_got_ents = bfd_zalloc (abfd, size); |
411e1bfb | 5130 | if (local_got_ents == NULL) |
e054468f | 5131 | return NULL; |
411e1bfb AM |
5132 | elf_local_got_ents (abfd) = local_got_ents; |
5133 | } | |
5134 | ||
e054468f | 5135 | if ((tls_type & (PLT_IFUNC | TLS_EXPLICIT)) == 0) |
411e1bfb AM |
5136 | { |
5137 | struct got_entry *ent; | |
5138 | ||
5139 | for (ent = local_got_ents[r_symndx]; ent != NULL; ent = ent->next) | |
e717da7e AM |
5140 | if (ent->addend == r_addend |
5141 | && ent->owner == abfd | |
5142 | && ent->tls_type == tls_type) | |
411e1bfb AM |
5143 | break; |
5144 | if (ent == NULL) | |
5145 | { | |
5146 | bfd_size_type amt = sizeof (*ent); | |
4ce794b7 | 5147 | ent = bfd_alloc (abfd, amt); |
411e1bfb AM |
5148 | if (ent == NULL) |
5149 | return FALSE; | |
5150 | ent->next = local_got_ents[r_symndx]; | |
5151 | ent->addend = r_addend; | |
e717da7e | 5152 | ent->owner = abfd; |
411e1bfb | 5153 | ent->tls_type = tls_type; |
927be08e | 5154 | ent->is_indirect = FALSE; |
411e1bfb AM |
5155 | ent->got.refcount = 0; |
5156 | local_got_ents[r_symndx] = ent; | |
5157 | } | |
5158 | ent->got.refcount += 1; | |
5159 | } | |
5160 | ||
e054468f | 5161 | local_plt = (struct plt_entry **) (local_got_ents + symtab_hdr->sh_info); |
f961d9dd | 5162 | local_got_tls_masks = (unsigned char *) (local_plt + symtab_hdr->sh_info); |
e7b938ca | 5163 | local_got_tls_masks[r_symndx] |= tls_type; |
e054468f AM |
5164 | |
5165 | return local_plt + r_symndx; | |
65f38f15 AM |
5166 | } |
5167 | ||
411e1bfb | 5168 | static bfd_boolean |
e054468f | 5169 | update_plt_info (bfd *abfd, struct plt_entry **plist, bfd_vma addend) |
1e2f5b6e | 5170 | { |
411e1bfb | 5171 | struct plt_entry *ent; |
1e2f5b6e | 5172 | |
e054468f | 5173 | for (ent = *plist; ent != NULL; ent = ent->next) |
411e1bfb AM |
5174 | if (ent->addend == addend) |
5175 | break; | |
5176 | if (ent == NULL) | |
1e2f5b6e | 5177 | { |
411e1bfb | 5178 | bfd_size_type amt = sizeof (*ent); |
4ce794b7 | 5179 | ent = bfd_alloc (abfd, amt); |
411e1bfb AM |
5180 | if (ent == NULL) |
5181 | return FALSE; | |
e054468f | 5182 | ent->next = *plist; |
411e1bfb AM |
5183 | ent->addend = addend; |
5184 | ent->plt.refcount = 0; | |
e054468f | 5185 | *plist = ent; |
1e2f5b6e | 5186 | } |
411e1bfb | 5187 | ent->plt.refcount += 1; |
b34976b6 | 5188 | return TRUE; |
1e2f5b6e AM |
5189 | } |
5190 | ||
e054468f AM |
5191 | static bfd_boolean |
5192 | is_branch_reloc (enum elf_ppc64_reloc_type r_type) | |
5193 | { | |
5194 | return (r_type == R_PPC64_REL24 | |
5195 | || r_type == R_PPC64_REL14 | |
5196 | || r_type == R_PPC64_REL14_BRTAKEN | |
5197 | || r_type == R_PPC64_REL14_BRNTAKEN | |
5198 | || r_type == R_PPC64_ADDR24 | |
5199 | || r_type == R_PPC64_ADDR14 | |
5200 | || r_type == R_PPC64_ADDR14_BRTAKEN | |
5201 | || r_type == R_PPC64_ADDR14_BRNTAKEN); | |
5202 | } | |
5203 | ||
5bd4f169 | 5204 | /* Look through the relocs for a section during the first phase, and |
65f38f15 | 5205 | calculate needed space in the global offset table, procedure |
5d1634d7 | 5206 | linkage table, and dynamic reloc sections. */ |
5bd4f169 | 5207 | |
b34976b6 | 5208 | static bfd_boolean |
4ce794b7 AM |
5209 | ppc64_elf_check_relocs (bfd *abfd, struct bfd_link_info *info, |
5210 | asection *sec, const Elf_Internal_Rela *relocs) | |
5bd4f169 | 5211 | { |
65f38f15 | 5212 | struct ppc_link_hash_table *htab; |
5bd4f169 | 5213 | Elf_Internal_Shdr *symtab_hdr; |
c7e2358a | 5214 | struct elf_link_hash_entry **sym_hashes; |
5bd4f169 AM |
5215 | const Elf_Internal_Rela *rel; |
5216 | const Elf_Internal_Rela *rel_end; | |
5bd4f169 | 5217 | asection *sreloc; |
1e2f5b6e | 5218 | asection **opd_sym_map; |
3a71aa26 | 5219 | struct elf_link_hash_entry *tga, *dottga; |
5bd4f169 | 5220 | |
1049f94e | 5221 | if (info->relocatable) |
b34976b6 | 5222 | return TRUE; |
5bd4f169 | 5223 | |
680a3378 AM |
5224 | /* Don't do anything special with non-loaded, non-alloced sections. |
5225 | In particular, any relocs in such sections should not affect GOT | |
5226 | and PLT reference counting (ie. we don't allow them to create GOT | |
5227 | or PLT entries), there's no possibility or desire to optimize TLS | |
5228 | relocs, and there's not much point in propagating relocs to shared | |
5229 | libs that the dynamic linker won't relocate. */ | |
5230 | if ((sec->flags & SEC_ALLOC) == 0) | |
5231 | return TRUE; | |
5232 | ||
0c8d6e5c | 5233 | BFD_ASSERT (is_ppc64_elf (abfd)); |
0ffa91dd | 5234 | |
65f38f15 | 5235 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
5236 | if (htab == NULL) |
5237 | return FALSE; | |
5238 | ||
3a71aa26 AM |
5239 | tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr", |
5240 | FALSE, FALSE, TRUE); | |
5241 | dottga = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr", | |
5242 | FALSE, FALSE, TRUE); | |
0ffa91dd | 5243 | symtab_hdr = &elf_symtab_hdr (abfd); |
5bd4f169 | 5244 | sym_hashes = elf_sym_hashes (abfd); |
5bd4f169 | 5245 | sreloc = NULL; |
1e2f5b6e | 5246 | opd_sym_map = NULL; |
f6c7c3e8 AM |
5247 | if (ppc64_elf_section_data (sec) != NULL |
5248 | && ppc64_elf_section_data (sec)->sec_type == sec_opd) | |
5249 | opd_sym_map = ppc64_elf_section_data (sec)->u.opd.func_sec; | |
5bd4f169 AM |
5250 | |
5251 | rel_end = relocs + sec->reloc_count; | |
5252 | for (rel = relocs; rel < rel_end; rel++) | |
5253 | { | |
5254 | unsigned long r_symndx; | |
5255 | struct elf_link_hash_entry *h; | |
04c9666a | 5256 | enum elf_ppc64_reloc_type r_type; |
727fc41e | 5257 | int tls_type; |
7c8fe5c4 | 5258 | struct _ppc64_elf_section_data *ppc64_sec; |
e054468f | 5259 | struct plt_entry **ifunc; |
5bd4f169 AM |
5260 | |
5261 | r_symndx = ELF64_R_SYM (rel->r_info); | |
5262 | if (r_symndx < symtab_hdr->sh_info) | |
5263 | h = NULL; | |
5264 | else | |
973a3492 L |
5265 | { |
5266 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
b31867b6 | 5267 | h = elf_follow_link (h); |
81fbe831 AM |
5268 | |
5269 | /* PR15323, ref flags aren't set for references in the same | |
5270 | object. */ | |
5271 | h->root.non_ir_ref = 1; | |
1c865ab2 AM |
5272 | |
5273 | if (h == htab->elf.hgot) | |
5274 | sec->has_toc_reloc = 1; | |
973a3492 | 5275 | } |
5bd4f169 | 5276 | |
727fc41e | 5277 | tls_type = 0; |
e054468f | 5278 | ifunc = NULL; |
25f23106 AM |
5279 | if (h != NULL) |
5280 | { | |
5281 | if (h->type == STT_GNU_IFUNC) | |
5282 | { | |
5283 | h->needs_plt = 1; | |
5284 | ifunc = &h->plt.plist; | |
5285 | } | |
5286 | } | |
5287 | else | |
5288 | { | |
5289 | Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache, | |
5290 | abfd, r_symndx); | |
5291 | if (isym == NULL) | |
5292 | return FALSE; | |
5293 | ||
5294 | if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC) | |
5295 | { | |
5296 | ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
5297 | rel->r_addend, PLT_IFUNC); | |
5298 | if (ifunc == NULL) | |
5299 | return FALSE; | |
5300 | } | |
5301 | } | |
4ce794b7 | 5302 | r_type = ELF64_R_TYPE (rel->r_info); |
e054468f AM |
5303 | if (is_branch_reloc (r_type)) |
5304 | { | |
5305 | if (h != NULL && (h == tga || h == dottga)) | |
5306 | { | |
5307 | if (rel != relocs | |
5308 | && (ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSGD | |
5309 | || ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSLD)) | |
5310 | /* We have a new-style __tls_get_addr call with a marker | |
5311 | reloc. */ | |
5312 | ; | |
5313 | else | |
5314 | /* Mark this section as having an old-style call. */ | |
5315 | sec->has_tls_get_addr_call = 1; | |
5316 | } | |
727fc41e | 5317 | |
e054468f | 5318 | /* STT_GNU_IFUNC symbols must have a PLT entry. */ |
e054468f AM |
5319 | if (ifunc != NULL |
5320 | && !update_plt_info (abfd, ifunc, rel->r_addend)) | |
5321 | return FALSE; | |
5322 | } | |
727fc41e | 5323 | |
a33d1f77 | 5324 | switch (r_type) |
5bd4f169 | 5325 | { |
727fc41e AM |
5326 | case R_PPC64_TLSGD: |
5327 | case R_PPC64_TLSLD: | |
5328 | /* These special tls relocs tie a call to __tls_get_addr with | |
5329 | its parameter symbol. */ | |
5330 | break; | |
5331 | ||
411e1bfb AM |
5332 | case R_PPC64_GOT_TLSLD16: |
5333 | case R_PPC64_GOT_TLSLD16_LO: | |
5334 | case R_PPC64_GOT_TLSLD16_HI: | |
5335 | case R_PPC64_GOT_TLSLD16_HA: | |
951fd09b | 5336 | tls_type = TLS_TLS | TLS_LD; |
411e1bfb AM |
5337 | goto dogottls; |
5338 | ||
5339 | case R_PPC64_GOT_TLSGD16: | |
5340 | case R_PPC64_GOT_TLSGD16_LO: | |
5341 | case R_PPC64_GOT_TLSGD16_HI: | |
5342 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b | 5343 | tls_type = TLS_TLS | TLS_GD; |
411e1bfb AM |
5344 | goto dogottls; |
5345 | ||
5346 | case R_PPC64_GOT_TPREL16_DS: | |
5347 | case R_PPC64_GOT_TPREL16_LO_DS: | |
5348 | case R_PPC64_GOT_TPREL16_HI: | |
5349 | case R_PPC64_GOT_TPREL16_HA: | |
afb93314 | 5350 | if (info->shared) |
411e1bfb AM |
5351 | info->flags |= DF_STATIC_TLS; |
5352 | tls_type = TLS_TLS | TLS_TPREL; | |
5353 | goto dogottls; | |
5354 | ||
5355 | case R_PPC64_GOT_DTPREL16_DS: | |
5356 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
5357 | case R_PPC64_GOT_DTPREL16_HI: | |
5358 | case R_PPC64_GOT_DTPREL16_HA: | |
5359 | tls_type = TLS_TLS | TLS_DTPREL; | |
5360 | dogottls: | |
5361 | sec->has_tls_reloc = 1; | |
5362 | /* Fall thru */ | |
5363 | ||
5bd4f169 | 5364 | case R_PPC64_GOT16: |
5bd4f169 | 5365 | case R_PPC64_GOT16_DS: |
65f38f15 AM |
5366 | case R_PPC64_GOT16_HA: |
5367 | case R_PPC64_GOT16_HI: | |
5368 | case R_PPC64_GOT16_LO: | |
5bd4f169 | 5369 | case R_PPC64_GOT16_LO_DS: |
65f38f15 | 5370 | /* This symbol requires a global offset table entry. */ |
4c52953f | 5371 | sec->has_toc_reloc = 1; |
33c0ec9d AM |
5372 | if (r_type == R_PPC64_GOT_TLSLD16 |
5373 | || r_type == R_PPC64_GOT_TLSGD16 | |
5374 | || r_type == R_PPC64_GOT_TPREL16_DS | |
5375 | || r_type == R_PPC64_GOT_DTPREL16_DS | |
5376 | || r_type == R_PPC64_GOT16 | |
5377 | || r_type == R_PPC64_GOT16_DS) | |
5378 | { | |
5379 | htab->do_multi_toc = 1; | |
d77c8a4b | 5380 | ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1; |
33c0ec9d AM |
5381 | } |
5382 | ||
e717da7e AM |
5383 | if (ppc64_elf_tdata (abfd)->got == NULL |
5384 | && !create_got_section (abfd, info)) | |
b34976b6 | 5385 | return FALSE; |
5bd4f169 AM |
5386 | |
5387 | if (h != NULL) | |
5388 | { | |
411e1bfb AM |
5389 | struct ppc_link_hash_entry *eh; |
5390 | struct got_entry *ent; | |
65f38f15 | 5391 | |
411e1bfb AM |
5392 | eh = (struct ppc_link_hash_entry *) h; |
5393 | for (ent = eh->elf.got.glist; ent != NULL; ent = ent->next) | |
5394 | if (ent->addend == rel->r_addend | |
e717da7e | 5395 | && ent->owner == abfd |
411e1bfb AM |
5396 | && ent->tls_type == tls_type) |
5397 | break; | |
5398 | if (ent == NULL) | |
5bd4f169 | 5399 | { |
411e1bfb | 5400 | bfd_size_type amt = sizeof (*ent); |
4ce794b7 | 5401 | ent = bfd_alloc (abfd, amt); |
411e1bfb | 5402 | if (ent == NULL) |
b34976b6 | 5403 | return FALSE; |
411e1bfb AM |
5404 | ent->next = eh->elf.got.glist; |
5405 | ent->addend = rel->r_addend; | |
e717da7e | 5406 | ent->owner = abfd; |
411e1bfb | 5407 | ent->tls_type = tls_type; |
927be08e | 5408 | ent->is_indirect = FALSE; |
411e1bfb AM |
5409 | ent->got.refcount = 0; |
5410 | eh->elf.got.glist = ent; | |
5bd4f169 | 5411 | } |
411e1bfb | 5412 | ent->got.refcount += 1; |
e7b938ca | 5413 | eh->tls_mask |= tls_type; |
5bd4f169 | 5414 | } |
411e1bfb AM |
5415 | else |
5416 | /* This is a global offset table entry for a local symbol. */ | |
5417 | if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
5418 | rel->r_addend, tls_type)) | |
5419 | return FALSE; | |
a345bc8d AM |
5420 | |
5421 | /* We may also need a plt entry if the symbol turns out to be | |
5422 | an ifunc. */ | |
f6c7c3e8 | 5423 | if (h != NULL && !info->shared && abiversion (abfd) != 1) |
a345bc8d AM |
5424 | { |
5425 | if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend)) | |
5426 | return FALSE; | |
5427 | } | |
5bd4f169 AM |
5428 | break; |
5429 | ||
5bd4f169 | 5430 | case R_PPC64_PLT16_HA: |
65f38f15 AM |
5431 | case R_PPC64_PLT16_HI: |
5432 | case R_PPC64_PLT16_LO: | |
5433 | case R_PPC64_PLT32: | |
5434 | case R_PPC64_PLT64: | |
5bd4f169 | 5435 | /* This symbol requires a procedure linkage table entry. We |
3fad3c7c AM |
5436 | actually build the entry in adjust_dynamic_symbol, |
5437 | because this might be a case of linking PIC code without | |
5438 | linking in any dynamic objects, in which case we don't | |
5439 | need to generate a procedure linkage table after all. */ | |
5bd4f169 AM |
5440 | if (h == NULL) |
5441 | { | |
5442 | /* It does not make sense to have a procedure linkage | |
3fad3c7c | 5443 | table entry for a local symbol. */ |
5bd4f169 | 5444 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 5445 | return FALSE; |
5bd4f169 | 5446 | } |
411e1bfb | 5447 | else |
e054468f AM |
5448 | { |
5449 | if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend)) | |
5450 | return FALSE; | |
5451 | h->needs_plt = 1; | |
5452 | if (h->root.root.string[0] == '.' | |
5453 | && h->root.root.string[1] != '\0') | |
5454 | ((struct ppc_link_hash_entry *) h)->is_func = 1; | |
5455 | } | |
5bd4f169 AM |
5456 | break; |
5457 | ||
5458 | /* The following relocations don't need to propagate the | |
5459 | relocation if linking a shared object since they are | |
5460 | section relative. */ | |
5461 | case R_PPC64_SECTOFF: | |
5462 | case R_PPC64_SECTOFF_LO: | |
5463 | case R_PPC64_SECTOFF_HI: | |
5464 | case R_PPC64_SECTOFF_HA: | |
5465 | case R_PPC64_SECTOFF_DS: | |
5466 | case R_PPC64_SECTOFF_LO_DS: | |
411e1bfb AM |
5467 | case R_PPC64_DTPREL16: |
5468 | case R_PPC64_DTPREL16_LO: | |
5469 | case R_PPC64_DTPREL16_HI: | |
5470 | case R_PPC64_DTPREL16_HA: | |
5471 | case R_PPC64_DTPREL16_DS: | |
5472 | case R_PPC64_DTPREL16_LO_DS: | |
f9c6b907 AM |
5473 | case R_PPC64_DTPREL16_HIGH: |
5474 | case R_PPC64_DTPREL16_HIGHA: | |
411e1bfb AM |
5475 | case R_PPC64_DTPREL16_HIGHER: |
5476 | case R_PPC64_DTPREL16_HIGHERA: | |
5477 | case R_PPC64_DTPREL16_HIGHEST: | |
5478 | case R_PPC64_DTPREL16_HIGHESTA: | |
5bd4f169 AM |
5479 | break; |
5480 | ||
ad8e1ba5 | 5481 | /* Nor do these. */ |
25f23106 AM |
5482 | case R_PPC64_REL16: |
5483 | case R_PPC64_REL16_LO: | |
5484 | case R_PPC64_REL16_HI: | |
5485 | case R_PPC64_REL16_HA: | |
5486 | break; | |
5487 | ||
45965137 AM |
5488 | /* Not supported as a dynamic relocation. */ |
5489 | case R_PPC64_ADDR64_LOCAL: | |
5490 | if (info->shared) | |
5491 | { | |
5492 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) | |
5493 | ppc_howto_init (); | |
5494 | info->callbacks->einfo (_("%P: %H: %s reloc unsupported " | |
5495 | "in shared libraries and PIEs.\n"), | |
5496 | abfd, sec, rel->r_offset, | |
5497 | ppc64_elf_howto_table[r_type]->name); | |
5498 | bfd_set_error (bfd_error_bad_value); | |
5499 | return FALSE; | |
5500 | } | |
5501 | break; | |
5502 | ||
ad8e1ba5 | 5503 | case R_PPC64_TOC16: |
33c0ec9d AM |
5504 | case R_PPC64_TOC16_DS: |
5505 | htab->do_multi_toc = 1; | |
d77c8a4b | 5506 | ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1; |
ad8e1ba5 AM |
5507 | case R_PPC64_TOC16_LO: |
5508 | case R_PPC64_TOC16_HI: | |
5509 | case R_PPC64_TOC16_HA: | |
ad8e1ba5 | 5510 | case R_PPC64_TOC16_LO_DS: |
4c52953f | 5511 | sec->has_toc_reloc = 1; |
ad8e1ba5 AM |
5512 | break; |
5513 | ||
5bd4f169 AM |
5514 | /* This relocation describes the C++ object vtable hierarchy. |
5515 | Reconstruct it for later use during GC. */ | |
5516 | case R_PPC64_GNU_VTINHERIT: | |
c152c796 | 5517 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
b34976b6 | 5518 | return FALSE; |
5bd4f169 AM |
5519 | break; |
5520 | ||
5521 | /* This relocation describes which C++ vtable entries are actually | |
5522 | used. Record for later use during GC. */ | |
5523 | case R_PPC64_GNU_VTENTRY: | |
d17e0c6e JB |
5524 | BFD_ASSERT (h != NULL); |
5525 | if (h != NULL | |
5526 | && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) | |
b34976b6 | 5527 | return FALSE; |
5bd4f169 AM |
5528 | break; |
5529 | ||
721956f4 AM |
5530 | case R_PPC64_REL14: |
5531 | case R_PPC64_REL14_BRTAKEN: | |
5532 | case R_PPC64_REL14_BRNTAKEN: | |
220c76dd AM |
5533 | { |
5534 | asection *dest = NULL; | |
5535 | ||
5536 | /* Heuristic: If jumping outside our section, chances are | |
5537 | we are going to need a stub. */ | |
5538 | if (h != NULL) | |
5539 | { | |
5540 | /* If the sym is weak it may be overridden later, so | |
5541 | don't assume we know where a weak sym lives. */ | |
5542 | if (h->root.type == bfd_link_hash_defined) | |
5543 | dest = h->root.u.def.section; | |
5544 | } | |
5545 | else | |
87d72d41 AM |
5546 | { |
5547 | Elf_Internal_Sym *isym; | |
5548 | ||
5549 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, | |
5550 | abfd, r_symndx); | |
5551 | if (isym == NULL) | |
5552 | return FALSE; | |
5553 | ||
5554 | dest = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
5555 | } | |
5556 | ||
220c76dd | 5557 | if (dest != sec) |
7c8fe5c4 | 5558 | ppc64_elf_section_data (sec)->has_14bit_branch = 1; |
220c76dd | 5559 | } |
721956f4 AM |
5560 | /* Fall through. */ |
5561 | ||
5d1634d7 | 5562 | case R_PPC64_REL24: |
e054468f | 5563 | if (h != NULL && ifunc == NULL) |
5d1634d7 AM |
5564 | { |
5565 | /* We may need a .plt entry if the function this reloc | |
5566 | refers to is in a shared lib. */ | |
e054468f | 5567 | if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend)) |
411e1bfb | 5568 | return FALSE; |
e054468f AM |
5569 | h->needs_plt = 1; |
5570 | if (h->root.root.string[0] == '.' | |
5571 | && h->root.root.string[1] != '\0') | |
5572 | ((struct ppc_link_hash_entry *) h)->is_func = 1; | |
3a71aa26 | 5573 | if (h == tga || h == dottga) |
411e1bfb | 5574 | sec->has_tls_reloc = 1; |
411e1bfb AM |
5575 | } |
5576 | break; | |
5577 | ||
5578 | case R_PPC64_TPREL64: | |
5579 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_TPREL; | |
afb93314 | 5580 | if (info->shared) |
411e1bfb AM |
5581 | info->flags |= DF_STATIC_TLS; |
5582 | goto dotlstoc; | |
5583 | ||
5584 | case R_PPC64_DTPMOD64: | |
5585 | if (rel + 1 < rel_end | |
5586 | && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64) | |
5587 | && rel[1].r_offset == rel->r_offset + 8) | |
951fd09b | 5588 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_GD; |
411e1bfb | 5589 | else |
951fd09b | 5590 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_LD; |
411e1bfb AM |
5591 | goto dotlstoc; |
5592 | ||
5593 | case R_PPC64_DTPREL64: | |
5594 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_DTPREL; | |
5595 | if (rel != relocs | |
5596 | && rel[-1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPMOD64) | |
5597 | && rel[-1].r_offset == rel->r_offset - 8) | |
5598 | /* This is the second reloc of a dtpmod, dtprel pair. | |
5599 | Don't mark with TLS_DTPREL. */ | |
5600 | goto dodyn; | |
5601 | ||
5602 | dotlstoc: | |
5603 | sec->has_tls_reloc = 1; | |
5604 | if (h != NULL) | |
5605 | { | |
5606 | struct ppc_link_hash_entry *eh; | |
5607 | eh = (struct ppc_link_hash_entry *) h; | |
e7b938ca | 5608 | eh->tls_mask |= tls_type; |
411e1bfb AM |
5609 | } |
5610 | else | |
5611 | if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
5612 | rel->r_addend, tls_type)) | |
5613 | return FALSE; | |
5614 | ||
7c8fe5c4 AM |
5615 | ppc64_sec = ppc64_elf_section_data (sec); |
5616 | if (ppc64_sec->sec_type != sec_toc) | |
411e1bfb | 5617 | { |
3a71aa26 AM |
5618 | bfd_size_type amt; |
5619 | ||
e7b938ca | 5620 | /* One extra to simplify get_tls_mask. */ |
3a71aa26 AM |
5621 | amt = sec->size * sizeof (unsigned) / 8 + sizeof (unsigned); |
5622 | ppc64_sec->u.toc.symndx = bfd_zalloc (abfd, amt); | |
5623 | if (ppc64_sec->u.toc.symndx == NULL) | |
5624 | return FALSE; | |
5625 | amt = sec->size * sizeof (bfd_vma) / 8; | |
5626 | ppc64_sec->u.toc.add = bfd_zalloc (abfd, amt); | |
5627 | if (ppc64_sec->u.toc.add == NULL) | |
411e1bfb | 5628 | return FALSE; |
7c8fe5c4 AM |
5629 | BFD_ASSERT (ppc64_sec->sec_type == sec_normal); |
5630 | ppc64_sec->sec_type = sec_toc; | |
411e1bfb AM |
5631 | } |
5632 | BFD_ASSERT (rel->r_offset % 8 == 0); | |
3a71aa26 AM |
5633 | ppc64_sec->u.toc.symndx[rel->r_offset / 8] = r_symndx; |
5634 | ppc64_sec->u.toc.add[rel->r_offset / 8] = rel->r_addend; | |
951fd09b AM |
5635 | |
5636 | /* Mark the second slot of a GD or LD entry. | |
5637 | -1 to indicate GD and -2 to indicate LD. */ | |
5638 | if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_GD)) | |
3a71aa26 | 5639 | ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -1; |
951fd09b | 5640 | else if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_LD)) |
3a71aa26 | 5641 | ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -2; |
411e1bfb AM |
5642 | goto dodyn; |
5643 | ||
5644 | case R_PPC64_TPREL16: | |
5645 | case R_PPC64_TPREL16_LO: | |
5646 | case R_PPC64_TPREL16_HI: | |
5647 | case R_PPC64_TPREL16_HA: | |
5648 | case R_PPC64_TPREL16_DS: | |
5649 | case R_PPC64_TPREL16_LO_DS: | |
f9c6b907 AM |
5650 | case R_PPC64_TPREL16_HIGH: |
5651 | case R_PPC64_TPREL16_HIGHA: | |
411e1bfb AM |
5652 | case R_PPC64_TPREL16_HIGHER: |
5653 | case R_PPC64_TPREL16_HIGHERA: | |
5654 | case R_PPC64_TPREL16_HIGHEST: | |
5655 | case R_PPC64_TPREL16_HIGHESTA: | |
5656 | if (info->shared) | |
5657 | { | |
afb93314 | 5658 | info->flags |= DF_STATIC_TLS; |
411e1bfb | 5659 | goto dodyn; |
5d1634d7 AM |
5660 | } |
5661 | break; | |
5662 | ||
e86ce104 | 5663 | case R_PPC64_ADDR64: |
1e2f5b6e | 5664 | if (opd_sym_map != NULL |
1e2f5b6e | 5665 | && rel + 1 < rel_end |
4ce794b7 | 5666 | && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC) |
1e2f5b6e | 5667 | { |
8387904d AM |
5668 | if (h != NULL) |
5669 | { | |
5670 | if (h->root.root.string[0] == '.' | |
5671 | && h->root.root.string[1] != 0 | |
b31867b6 | 5672 | && lookup_fdh ((struct ppc_link_hash_entry *) h, htab)) |
8387904d AM |
5673 | ; |
5674 | else | |
5675 | ((struct ppc_link_hash_entry *) h)->is_func = 1; | |
5676 | } | |
5677 | else | |
5678 | { | |
5679 | asection *s; | |
87d72d41 | 5680 | Elf_Internal_Sym *isym; |
1e2f5b6e | 5681 | |
87d72d41 AM |
5682 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, |
5683 | abfd, r_symndx); | |
5684 | if (isym == NULL) | |
8387904d | 5685 | return FALSE; |
87d72d41 AM |
5686 | |
5687 | s = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
5688 | if (s != NULL && s != sec) | |
51aecdc5 | 5689 | opd_sym_map[OPD_NDX (rel->r_offset)] = s; |
8387904d | 5690 | } |
1e2f5b6e | 5691 | } |
e86ce104 AM |
5692 | /* Fall through. */ |
5693 | ||
65f38f15 AM |
5694 | case R_PPC64_ADDR16: |
5695 | case R_PPC64_ADDR16_DS: | |
5696 | case R_PPC64_ADDR16_HA: | |
5697 | case R_PPC64_ADDR16_HI: | |
f9c6b907 AM |
5698 | case R_PPC64_ADDR16_HIGH: |
5699 | case R_PPC64_ADDR16_HIGHA: | |
65f38f15 AM |
5700 | case R_PPC64_ADDR16_HIGHER: |
5701 | case R_PPC64_ADDR16_HIGHERA: | |
5702 | case R_PPC64_ADDR16_HIGHEST: | |
5703 | case R_PPC64_ADDR16_HIGHESTA: | |
5704 | case R_PPC64_ADDR16_LO: | |
5705 | case R_PPC64_ADDR16_LO_DS: | |
f6c7c3e8 | 5706 | if (h != NULL && !info->shared && abiversion (abfd) != 1 |
a345bc8d AM |
5707 | && rel->r_addend == 0) |
5708 | { | |
5709 | /* We may need a .plt entry if this reloc refers to a | |
5710 | function in a shared lib. */ | |
5711 | if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend)) | |
5712 | return FALSE; | |
5713 | h->pointer_equality_needed = 1; | |
5714 | } | |
5715 | /* Fall through. */ | |
5716 | ||
5717 | case R_PPC64_REL30: | |
5718 | case R_PPC64_REL32: | |
5719 | case R_PPC64_REL64: | |
5720 | case R_PPC64_ADDR14: | |
5721 | case R_PPC64_ADDR14_BRNTAKEN: | |
5722 | case R_PPC64_ADDR14_BRTAKEN: | |
65f38f15 | 5723 | case R_PPC64_ADDR24: |
65f38f15 | 5724 | case R_PPC64_ADDR32: |
65f38f15 AM |
5725 | case R_PPC64_UADDR16: |
5726 | case R_PPC64_UADDR32: | |
5727 | case R_PPC64_UADDR64: | |
5bd4f169 | 5728 | case R_PPC64_TOC: |
81848ca0 AM |
5729 | if (h != NULL && !info->shared) |
5730 | /* We may need a copy reloc. */ | |
f5385ebf | 5731 | h->non_got_ref = 1; |
81848ca0 | 5732 | |
41bd81ab | 5733 | /* Don't propagate .opd relocs. */ |
1e2f5b6e | 5734 | if (NO_OPD_RELOCS && opd_sym_map != NULL) |
e86ce104 | 5735 | break; |
e86ce104 | 5736 | |
65f38f15 AM |
5737 | /* If we are creating a shared library, and this is a reloc |
5738 | against a global symbol, or a non PC relative reloc | |
5739 | against a local symbol, then we need to copy the reloc | |
5740 | into the shared library. However, if we are linking with | |
5741 | -Bsymbolic, we do not need to copy a reloc against a | |
5742 | global symbol which is defined in an object we are | |
5743 | including in the link (i.e., DEF_REGULAR is set). At | |
5744 | this point we have not seen all the input files, so it is | |
5745 | possible that DEF_REGULAR is not set now but will be set | |
5746 | later (it is never cleared). In case of a weak definition, | |
5747 | DEF_REGULAR may be cleared later by a strong definition in | |
5748 | a shared library. We account for that possibility below by | |
f4656909 | 5749 | storing information in the dyn_relocs field of the hash |
65f38f15 AM |
5750 | table entry. A similar situation occurs when creating |
5751 | shared libraries and symbol visibility changes render the | |
5752 | symbol local. | |
5753 | ||
5754 | If on the other hand, we are creating an executable, we | |
5755 | may need to keep relocations for symbols satisfied by a | |
5756 | dynamic library if we manage to avoid copy relocs for the | |
5757 | symbol. */ | |
411e1bfb | 5758 | dodyn: |
65f38f15 | 5759 | if ((info->shared |
1d483afe | 5760 | && (must_be_dyn_reloc (info, r_type) |
65f38f15 | 5761 | || (h != NULL |
198f1157 | 5762 | && (!SYMBOLIC_BIND (info, h) |
65f38f15 | 5763 | || h->root.type == bfd_link_hash_defweak |
f5385ebf | 5764 | || !h->def_regular)))) |
f4656909 AM |
5765 | || (ELIMINATE_COPY_RELOCS |
5766 | && !info->shared | |
65f38f15 AM |
5767 | && h != NULL |
5768 | && (h->root.type == bfd_link_hash_defweak | |
25f23106 AM |
5769 | || !h->def_regular)) |
5770 | || (!info->shared | |
5771 | && ifunc != NULL)) | |
5bd4f169 | 5772 | { |
65f38f15 AM |
5773 | /* We must copy these reloc types into the output file. |
5774 | Create a reloc section in dynobj and make room for | |
5775 | this reloc. */ | |
5bd4f169 AM |
5776 | if (sreloc == NULL) |
5777 | { | |
83bac4b0 NC |
5778 | sreloc = _bfd_elf_make_dynamic_reloc_section |
5779 | (sec, htab->elf.dynobj, 3, abfd, /*rela?*/ TRUE); | |
65f38f15 | 5780 | |
5bd4f169 | 5781 | if (sreloc == NULL) |
83bac4b0 | 5782 | return FALSE; |
5bd4f169 AM |
5783 | } |
5784 | ||
65f38f15 AM |
5785 | /* If this is a global symbol, we count the number of |
5786 | relocations we need for this symbol. */ | |
5787 | if (h != NULL) | |
5788 | { | |
19e08130 AM |
5789 | struct elf_dyn_relocs *p; |
5790 | struct elf_dyn_relocs **head; | |
5791 | ||
ec338859 | 5792 | head = &((struct ppc_link_hash_entry *) h)->dyn_relocs; |
19e08130 AM |
5793 | p = *head; |
5794 | if (p == NULL || p->sec != sec) | |
5795 | { | |
5796 | p = bfd_alloc (htab->elf.dynobj, sizeof *p); | |
5797 | if (p == NULL) | |
5798 | return FALSE; | |
5799 | p->next = *head; | |
5800 | *head = p; | |
5801 | p->sec = sec; | |
5802 | p->count = 0; | |
5803 | p->pc_count = 0; | |
5804 | } | |
5805 | p->count += 1; | |
5806 | if (!must_be_dyn_reloc (info, r_type)) | |
5807 | p->pc_count += 1; | |
65f38f15 AM |
5808 | } |
5809 | else | |
5810 | { | |
ec338859 AM |
5811 | /* Track dynamic relocs needed for local syms too. |
5812 | We really need local syms available to do this | |
5813 | easily. Oh well. */ | |
19e08130 AM |
5814 | struct ppc_dyn_relocs *p; |
5815 | struct ppc_dyn_relocs **head; | |
5816 | bfd_boolean is_ifunc; | |
ec338859 | 5817 | asection *s; |
6edfbbad | 5818 | void *vpp; |
87d72d41 | 5819 | Elf_Internal_Sym *isym; |
6edfbbad | 5820 | |
87d72d41 AM |
5821 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, |
5822 | abfd, r_symndx); | |
5823 | if (isym == NULL) | |
b34976b6 | 5824 | return FALSE; |
ec338859 | 5825 | |
87d72d41 AM |
5826 | s = bfd_section_from_elf_index (abfd, isym->st_shndx); |
5827 | if (s == NULL) | |
5828 | s = sec; | |
5829 | ||
6edfbbad | 5830 | vpp = &elf_section_data (s)->local_dynrel; |
19e08130 AM |
5831 | head = (struct ppc_dyn_relocs **) vpp; |
5832 | is_ifunc = ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC; | |
5833 | p = *head; | |
5834 | if (p != NULL && p->sec == sec && p->ifunc != is_ifunc) | |
5835 | p = p->next; | |
5836 | if (p == NULL || p->sec != sec || p->ifunc != is_ifunc) | |
5837 | { | |
5838 | p = bfd_alloc (htab->elf.dynobj, sizeof *p); | |
5839 | if (p == NULL) | |
5840 | return FALSE; | |
5841 | p->next = *head; | |
5842 | *head = p; | |
5843 | p->sec = sec; | |
5844 | p->ifunc = is_ifunc; | |
5845 | p->count = 0; | |
5846 | } | |
5847 | p->count += 1; | |
ec338859 | 5848 | } |
65f38f15 | 5849 | } |
5bd4f169 | 5850 | break; |
65f38f15 AM |
5851 | |
5852 | default: | |
96e0dda4 | 5853 | break; |
5bd4f169 AM |
5854 | } |
5855 | } | |
5856 | ||
b34976b6 | 5857 | return TRUE; |
5bd4f169 AM |
5858 | } |
5859 | ||
ee67d69a AM |
5860 | /* Merge backend specific data from an object file to the output |
5861 | object file when linking. */ | |
5862 | ||
5863 | static bfd_boolean | |
5864 | ppc64_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd) | |
5865 | { | |
5866 | unsigned long iflags, oflags; | |
5867 | ||
5868 | if ((ibfd->flags & BFD_LINKER_CREATED) != 0) | |
5869 | return TRUE; | |
5870 | ||
5871 | if (!is_ppc64_elf (ibfd) || !is_ppc64_elf (obfd)) | |
5872 | return TRUE; | |
5873 | ||
5874 | if (!_bfd_generic_verify_endian_match (ibfd, obfd)) | |
5875 | return FALSE; | |
5876 | ||
5877 | iflags = elf_elfheader (ibfd)->e_flags; | |
5878 | oflags = elf_elfheader (obfd)->e_flags; | |
5879 | ||
f6c7c3e8 | 5880 | if (iflags & ~EF_PPC64_ABI) |
ee67d69a AM |
5881 | { |
5882 | (*_bfd_error_handler) | |
5883 | (_("%B uses unknown e_flags 0x%lx"), ibfd, iflags); | |
5884 | bfd_set_error (bfd_error_bad_value); | |
5885 | return FALSE; | |
5886 | } | |
f6c7c3e8 | 5887 | else if (iflags != oflags && iflags != 0) |
ee67d69a AM |
5888 | { |
5889 | (*_bfd_error_handler) | |
5890 | (_("%B: ABI version %ld is not compatible with ABI version %ld output"), | |
5891 | ibfd, iflags, oflags); | |
5892 | bfd_set_error (bfd_error_bad_value); | |
5893 | return FALSE; | |
5894 | } | |
5895 | ||
5896 | /* Merge Tag_compatibility attributes and any common GNU ones. */ | |
5897 | _bfd_elf_merge_object_attributes (ibfd, obfd); | |
5898 | ||
5899 | return TRUE; | |
5900 | } | |
5901 | ||
5902 | static bfd_boolean | |
5903 | ppc64_elf_print_private_bfd_data (bfd *abfd, void *ptr) | |
5904 | { | |
5905 | /* Print normal ELF private data. */ | |
5906 | _bfd_elf_print_private_bfd_data (abfd, ptr); | |
5907 | ||
5908 | if (elf_elfheader (abfd)->e_flags != 0) | |
5909 | { | |
5910 | FILE *file = ptr; | |
5911 | ||
5912 | /* xgettext:c-format */ | |
5913 | fprintf (file, _("private flags = 0x%lx:"), | |
5914 | elf_elfheader (abfd)->e_flags); | |
5915 | ||
5916 | if ((elf_elfheader (abfd)->e_flags & EF_PPC64_ABI) != 0) | |
5917 | fprintf (file, _(" [abiv%ld]"), | |
5918 | elf_elfheader (abfd)->e_flags & EF_PPC64_ABI); | |
5919 | fputc ('\n', file); | |
5920 | } | |
5921 | ||
5922 | return TRUE; | |
5923 | } | |
5924 | ||
8387904d | 5925 | /* OFFSET in OPD_SEC specifies a function descriptor. Return the address |
b53dfeb2 AM |
5926 | of the code entry point, and its section, which must be in the same |
5927 | object as OPD_SEC. Returns (bfd_vma) -1 on error. */ | |
8387904d AM |
5928 | |
5929 | static bfd_vma | |
5930 | opd_entry_value (asection *opd_sec, | |
5931 | bfd_vma offset, | |
5932 | asection **code_sec, | |
aef36ac1 AM |
5933 | bfd_vma *code_off, |
5934 | bfd_boolean in_code_sec) | |
8387904d AM |
5935 | { |
5936 | bfd *opd_bfd = opd_sec->owner; | |
8860955f | 5937 | Elf_Internal_Rela *relocs; |
8387904d | 5938 | Elf_Internal_Rela *lo, *hi, *look; |
645ea6a9 | 5939 | bfd_vma val; |
8387904d | 5940 | |
9f296da3 AM |
5941 | /* No relocs implies we are linking a --just-symbols object, or looking |
5942 | at a final linked executable with addr2line or somesuch. */ | |
4b85d634 AM |
5943 | if (opd_sec->reloc_count == 0) |
5944 | { | |
729eabd5 | 5945 | bfd_byte *contents = ppc64_elf_tdata (opd_bfd)->opd.contents; |
3b36f7e6 | 5946 | |
729eabd5 AM |
5947 | if (contents == NULL) |
5948 | { | |
5949 | if (!bfd_malloc_and_get_section (opd_bfd, opd_sec, &contents)) | |
5950 | return (bfd_vma) -1; | |
5951 | ppc64_elf_tdata (opd_bfd)->opd.contents = contents; | |
5952 | } | |
ee1e4ede | 5953 | |
dbb3fbbb | 5954 | /* PR 17512: file: 64b9dfbb. */ |
451dfd38 | 5955 | if (offset + 7 >= opd_sec->size || offset + 7 < offset) |
dbb3fbbb NC |
5956 | return (bfd_vma) -1; |
5957 | ||
729eabd5 | 5958 | val = bfd_get_64 (opd_bfd, contents + offset); |
aef36ac1 AM |
5959 | if (code_sec != NULL) |
5960 | { | |
5961 | asection *sec, *likely = NULL; | |
ee1e4ede | 5962 | |
aef36ac1 | 5963 | if (in_code_sec) |
4b85d634 | 5964 | { |
aef36ac1 AM |
5965 | sec = *code_sec; |
5966 | if (sec->vma <= val | |
5967 | && val < sec->vma + sec->size) | |
5968 | likely = sec; | |
5969 | else | |
5970 | val = -1; | |
5971 | } | |
5972 | else | |
5973 | for (sec = opd_bfd->sections; sec != NULL; sec = sec->next) | |
5974 | if (sec->vma <= val | |
5975 | && (sec->flags & SEC_LOAD) != 0 | |
5976 | && (sec->flags & SEC_ALLOC) != 0) | |
5977 | likely = sec; | |
5978 | if (likely != NULL) | |
5979 | { | |
5980 | *code_sec = likely; | |
5981 | if (code_off != NULL) | |
5982 | *code_off = val - likely->vma; | |
4b85d634 AM |
5983 | } |
5984 | } | |
aef36ac1 | 5985 | return val; |
4b85d634 AM |
5986 | } |
5987 | ||
0c8d6e5c | 5988 | BFD_ASSERT (is_ppc64_elf (opd_bfd)); |
0ffa91dd | 5989 | |
729eabd5 | 5990 | relocs = ppc64_elf_tdata (opd_bfd)->opd.relocs; |
8860955f AM |
5991 | if (relocs == NULL) |
5992 | relocs = _bfd_elf_link_read_relocs (opd_bfd, opd_sec, NULL, NULL, TRUE); | |
877a8638 NC |
5993 | /* PR 17512: file: df8e1fd6. */ |
5994 | if (relocs == NULL) | |
5995 | return (bfd_vma) -1; | |
645ea6a9 | 5996 | |
8387904d | 5997 | /* Go find the opd reloc at the sym address. */ |
8860955f | 5998 | lo = relocs; |
8387904d | 5999 | hi = lo + opd_sec->reloc_count - 1; /* ignore last reloc */ |
645ea6a9 | 6000 | val = (bfd_vma) -1; |
8387904d AM |
6001 | while (lo < hi) |
6002 | { | |
6003 | look = lo + (hi - lo) / 2; | |
6004 | if (look->r_offset < offset) | |
6005 | lo = look + 1; | |
6006 | else if (look->r_offset > offset) | |
6007 | hi = look; | |
6008 | else | |
6009 | { | |
0ffa91dd NC |
6010 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (opd_bfd); |
6011 | ||
8387904d AM |
6012 | if (ELF64_R_TYPE (look->r_info) == R_PPC64_ADDR64 |
6013 | && ELF64_R_TYPE ((look + 1)->r_info) == R_PPC64_TOC) | |
6014 | { | |
6015 | unsigned long symndx = ELF64_R_SYM (look->r_info); | |
b53dfeb2 | 6016 | asection *sec = NULL; |
8387904d | 6017 | |
b53dfeb2 AM |
6018 | if (symndx >= symtab_hdr->sh_info |
6019 | && elf_sym_hashes (opd_bfd) != NULL) | |
8387904d AM |
6020 | { |
6021 | struct elf_link_hash_entry **sym_hashes; | |
6022 | struct elf_link_hash_entry *rh; | |
6023 | ||
6024 | sym_hashes = elf_sym_hashes (opd_bfd); | |
6025 | rh = sym_hashes[symndx - symtab_hdr->sh_info]; | |
128205bb AM |
6026 | if (rh != NULL) |
6027 | { | |
6028 | rh = elf_follow_link (rh); | |
6029 | BFD_ASSERT (rh->root.type == bfd_link_hash_defined | |
6030 | || rh->root.type == bfd_link_hash_defweak); | |
6031 | val = rh->root.u.def.value; | |
6032 | sec = rh->root.u.def.section; | |
b53dfeb2 AM |
6033 | if (sec->owner != opd_bfd) |
6034 | { | |
6035 | sec = NULL; | |
6036 | val = (bfd_vma) -1; | |
6037 | } | |
6038 | } | |
6039 | } | |
6040 | ||
6041 | if (sec == NULL) | |
6042 | { | |
6043 | Elf_Internal_Sym *sym; | |
6044 | ||
6045 | if (symndx < symtab_hdr->sh_info) | |
6046 | { | |
6047 | sym = (Elf_Internal_Sym *) symtab_hdr->contents; | |
6048 | if (sym == NULL) | |
6049 | { | |
6050 | size_t symcnt = symtab_hdr->sh_info; | |
6051 | sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr, | |
6052 | symcnt, 0, | |
6053 | NULL, NULL, NULL); | |
6054 | if (sym == NULL) | |
6055 | break; | |
6056 | symtab_hdr->contents = (bfd_byte *) sym; | |
6057 | } | |
6058 | sym += symndx; | |
128205bb AM |
6059 | } |
6060 | else | |
6061 | { | |
b53dfeb2 AM |
6062 | sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr, |
6063 | 1, symndx, | |
6064 | NULL, NULL, NULL); | |
128205bb AM |
6065 | if (sym == NULL) |
6066 | break; | |
128205bb | 6067 | } |
b53dfeb2 AM |
6068 | sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx); |
6069 | if (sec == NULL) | |
6070 | break; | |
6071 | BFD_ASSERT ((sec->flags & SEC_MERGE) == 0); | |
6072 | val = sym->st_value; | |
8387904d | 6073 | } |
b53dfeb2 | 6074 | |
8387904d AM |
6075 | val += look->r_addend; |
6076 | if (code_off != NULL) | |
6077 | *code_off = val; | |
6078 | if (code_sec != NULL) | |
aef36ac1 AM |
6079 | { |
6080 | if (in_code_sec && *code_sec != sec) | |
6081 | return -1; | |
6082 | else | |
6083 | *code_sec = sec; | |
6084 | } | |
b53dfeb2 | 6085 | if (sec->output_section != NULL) |
8387904d | 6086 | val += sec->output_section->vma + sec->output_offset; |
8387904d AM |
6087 | } |
6088 | break; | |
6089 | } | |
6090 | } | |
645ea6a9 | 6091 | |
645ea6a9 | 6092 | return val; |
8387904d AM |
6093 | } |
6094 | ||
aef36ac1 AM |
6095 | /* If the ELF symbol SYM might be a function in SEC, return the |
6096 | function size and set *CODE_OFF to the function's entry point, | |
6097 | otherwise return zero. */ | |
9f296da3 | 6098 | |
aef36ac1 AM |
6099 | static bfd_size_type |
6100 | ppc64_elf_maybe_function_sym (const asymbol *sym, asection *sec, | |
6101 | bfd_vma *code_off) | |
9f296da3 | 6102 | { |
aef36ac1 AM |
6103 | bfd_size_type size; |
6104 | ||
6105 | if ((sym->flags & (BSF_SECTION_SYM | BSF_FILE | BSF_OBJECT | |
6106 | | BSF_THREAD_LOCAL | BSF_RELC | BSF_SRELC)) != 0) | |
6107 | return 0; | |
6108 | ||
6109 | size = 0; | |
6110 | if (!(sym->flags & BSF_SYNTHETIC)) | |
6111 | size = ((elf_symbol_type *) sym)->internal_elf_sym.st_size; | |
6112 | ||
6113 | if (strcmp (sym->section->name, ".opd") == 0) | |
9f296da3 | 6114 | { |
aef36ac1 AM |
6115 | if (opd_entry_value (sym->section, sym->value, |
6116 | &sec, code_off, TRUE) == (bfd_vma) -1) | |
6117 | return 0; | |
6118 | /* An old ABI binary with dot-syms has a size of 24 on the .opd | |
6119 | symbol. This size has nothing to do with the code size of the | |
6120 | function, which is what we're supposed to return, but the | |
6121 | code size isn't available without looking up the dot-sym. | |
6122 | However, doing that would be a waste of time particularly | |
6123 | since elf_find_function will look at the dot-sym anyway. | |
6124 | Now, elf_find_function will keep the largest size of any | |
6125 | function sym found at the code address of interest, so return | |
6126 | 1 here to avoid it incorrectly caching a larger function size | |
6127 | for a small function. This does mean we return the wrong | |
6128 | size for a new-ABI function of size 24, but all that does is | |
6129 | disable caching for such functions. */ | |
6130 | if (size == 24) | |
6131 | size = 1; | |
9f296da3 | 6132 | } |
aef36ac1 AM |
6133 | else |
6134 | { | |
6135 | if (sym->section != sec) | |
6136 | return 0; | |
6137 | *code_off = sym->value; | |
6138 | } | |
6139 | if (size == 0) | |
6140 | size = 1; | |
6141 | return size; | |
9f296da3 AM |
6142 | } |
6143 | ||
854b41e7 AM |
6144 | /* Return true if symbol is defined in a regular object file. */ |
6145 | ||
6146 | static bfd_boolean | |
6147 | is_static_defined (struct elf_link_hash_entry *h) | |
6148 | { | |
6149 | return ((h->root.type == bfd_link_hash_defined | |
6150 | || h->root.type == bfd_link_hash_defweak) | |
6151 | && h->root.u.def.section != NULL | |
6152 | && h->root.u.def.section->output_section != NULL); | |
6153 | } | |
6154 | ||
b31867b6 AM |
6155 | /* If FDH is a function descriptor symbol, return the associated code |
6156 | entry symbol if it is defined. Return NULL otherwise. */ | |
6157 | ||
6158 | static struct ppc_link_hash_entry * | |
6159 | defined_code_entry (struct ppc_link_hash_entry *fdh) | |
6160 | { | |
6161 | if (fdh->is_func_descriptor) | |
6162 | { | |
6163 | struct ppc_link_hash_entry *fh = ppc_follow_link (fdh->oh); | |
6164 | if (fh->elf.root.type == bfd_link_hash_defined | |
6165 | || fh->elf.root.type == bfd_link_hash_defweak) | |
6166 | return fh; | |
6167 | } | |
6168 | return NULL; | |
6169 | } | |
6170 | ||
6171 | /* If FH is a function code entry symbol, return the associated | |
6172 | function descriptor symbol if it is defined. Return NULL otherwise. */ | |
6173 | ||
6174 | static struct ppc_link_hash_entry * | |
6175 | defined_func_desc (struct ppc_link_hash_entry *fh) | |
6176 | { | |
6177 | if (fh->oh != NULL | |
6178 | && fh->oh->is_func_descriptor) | |
6179 | { | |
6180 | struct ppc_link_hash_entry *fdh = ppc_follow_link (fh->oh); | |
6181 | if (fdh->elf.root.type == bfd_link_hash_defined | |
6182 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
6183 | return fdh; | |
6184 | } | |
6185 | return NULL; | |
6186 | } | |
6187 | ||
74f0fb50 AM |
6188 | /* Mark all our entry sym sections, both opd and code section. */ |
6189 | ||
6190 | static void | |
6191 | ppc64_elf_gc_keep (struct bfd_link_info *info) | |
6192 | { | |
6193 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
6194 | struct bfd_sym_chain *sym; | |
6195 | ||
4dfe6ac6 NC |
6196 | if (htab == NULL) |
6197 | return; | |
6198 | ||
74f0fb50 AM |
6199 | for (sym = info->gc_sym_list; sym != NULL; sym = sym->next) |
6200 | { | |
b31867b6 | 6201 | struct ppc_link_hash_entry *eh, *fh; |
74f0fb50 AM |
6202 | asection *sec; |
6203 | ||
6204 | eh = (struct ppc_link_hash_entry *) | |
b31867b6 | 6205 | elf_link_hash_lookup (&htab->elf, sym->name, FALSE, FALSE, TRUE); |
74f0fb50 AM |
6206 | if (eh == NULL) |
6207 | continue; | |
6208 | if (eh->elf.root.type != bfd_link_hash_defined | |
6209 | && eh->elf.root.type != bfd_link_hash_defweak) | |
6210 | continue; | |
6211 | ||
b31867b6 AM |
6212 | fh = defined_code_entry (eh); |
6213 | if (fh != NULL) | |
74f0fb50 | 6214 | { |
b31867b6 | 6215 | sec = fh->elf.root.u.def.section; |
74f0fb50 AM |
6216 | sec->flags |= SEC_KEEP; |
6217 | } | |
6218 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL | |
6219 | && opd_entry_value (eh->elf.root.u.def.section, | |
6220 | eh->elf.root.u.def.value, | |
aef36ac1 | 6221 | &sec, NULL, FALSE) != (bfd_vma) -1) |
74f0fb50 AM |
6222 | sec->flags |= SEC_KEEP; |
6223 | ||
6224 | sec = eh->elf.root.u.def.section; | |
6225 | sec->flags |= SEC_KEEP; | |
6226 | } | |
6227 | } | |
6228 | ||
64d03ab5 AM |
6229 | /* Mark sections containing dynamically referenced symbols. When |
6230 | building shared libraries, we must assume that any visible symbol is | |
6231 | referenced. */ | |
6232 | ||
6233 | static bfd_boolean | |
6234 | ppc64_elf_gc_mark_dynamic_ref (struct elf_link_hash_entry *h, void *inf) | |
6235 | { | |
6236 | struct bfd_link_info *info = (struct bfd_link_info *) inf; | |
6237 | struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h; | |
b31867b6 | 6238 | struct ppc_link_hash_entry *fdh; |
b407645f | 6239 | struct bfd_elf_dynamic_list *d = info->dynamic_list; |
64d03ab5 | 6240 | |
64d03ab5 | 6241 | /* Dynamic linking info is on the func descriptor sym. */ |
b31867b6 AM |
6242 | fdh = defined_func_desc (eh); |
6243 | if (fdh != NULL) | |
6244 | eh = fdh; | |
64d03ab5 AM |
6245 | |
6246 | if ((eh->elf.root.type == bfd_link_hash_defined | |
6247 | || eh->elf.root.type == bfd_link_hash_defweak) | |
6248 | && (eh->elf.ref_dynamic | |
1c9177d9 | 6249 | || ((eh->elf.def_regular || ELF_COMMON_DEF_P (&eh->elf)) |
64d03ab5 | 6250 | && ELF_ST_VISIBILITY (eh->elf.other) != STV_INTERNAL |
4c58e0d8 | 6251 | && ELF_ST_VISIBILITY (eh->elf.other) != STV_HIDDEN |
b407645f AM |
6252 | && (!info->executable |
6253 | || info->export_dynamic | |
6254 | || (eh->elf.dynamic | |
6255 | && d != NULL | |
6256 | && (*d->match) (&d->head, NULL, eh->elf.root.root.string))) | |
4c58e0d8 AM |
6257 | && (strchr (eh->elf.root.root.string, ELF_VER_CHR) != NULL |
6258 | || !bfd_hide_sym_by_version (info->version_info, | |
6259 | eh->elf.root.root.string))))) | |
64d03ab5 AM |
6260 | { |
6261 | asection *code_sec; | |
b31867b6 | 6262 | struct ppc_link_hash_entry *fh; |
64d03ab5 AM |
6263 | |
6264 | eh->elf.root.u.def.section->flags |= SEC_KEEP; | |
6265 | ||
6266 | /* Function descriptor syms cause the associated | |
6267 | function code sym section to be marked. */ | |
b31867b6 AM |
6268 | fh = defined_code_entry (eh); |
6269 | if (fh != NULL) | |
6270 | { | |
6271 | code_sec = fh->elf.root.u.def.section; | |
6272 | code_sec->flags |= SEC_KEEP; | |
6273 | } | |
64d03ab5 AM |
6274 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL |
6275 | && opd_entry_value (eh->elf.root.u.def.section, | |
6276 | eh->elf.root.u.def.value, | |
aef36ac1 | 6277 | &code_sec, NULL, FALSE) != (bfd_vma) -1) |
64d03ab5 AM |
6278 | code_sec->flags |= SEC_KEEP; |
6279 | } | |
6280 | ||
6281 | return TRUE; | |
6282 | } | |
6283 | ||
5bd4f169 AM |
6284 | /* Return the section that should be marked against GC for a given |
6285 | relocation. */ | |
6286 | ||
6287 | static asection * | |
4ce794b7 | 6288 | ppc64_elf_gc_mark_hook (asection *sec, |
fb34365b | 6289 | struct bfd_link_info *info, |
4ce794b7 AM |
6290 | Elf_Internal_Rela *rel, |
6291 | struct elf_link_hash_entry *h, | |
6292 | Elf_Internal_Sym *sym) | |
5bd4f169 | 6293 | { |
ccfa59ea AM |
6294 | asection *rsec; |
6295 | ||
ccfa59ea AM |
6296 | /* Syms return NULL if we're marking .opd, so we avoid marking all |
6297 | function sections, as all functions are referenced in .opd. */ | |
6298 | rsec = NULL; | |
6299 | if (get_opd_info (sec) != NULL) | |
6300 | return rsec; | |
1e2f5b6e | 6301 | |
5bd4f169 AM |
6302 | if (h != NULL) |
6303 | { | |
04c9666a | 6304 | enum elf_ppc64_reloc_type r_type; |
b31867b6 | 6305 | struct ppc_link_hash_entry *eh, *fh, *fdh; |
a33d1f77 | 6306 | |
4ce794b7 | 6307 | r_type = ELF64_R_TYPE (rel->r_info); |
a33d1f77 | 6308 | switch (r_type) |
5bd4f169 AM |
6309 | { |
6310 | case R_PPC64_GNU_VTINHERIT: | |
6311 | case R_PPC64_GNU_VTENTRY: | |
6312 | break; | |
6313 | ||
6314 | default: | |
6315 | switch (h->root.type) | |
6316 | { | |
6317 | case bfd_link_hash_defined: | |
6318 | case bfd_link_hash_defweak: | |
ccfa59ea | 6319 | eh = (struct ppc_link_hash_entry *) h; |
b31867b6 AM |
6320 | fdh = defined_func_desc (eh); |
6321 | if (fdh != NULL) | |
6322 | eh = fdh; | |
1e2f5b6e AM |
6323 | |
6324 | /* Function descriptor syms cause the associated | |
6325 | function code sym section to be marked. */ | |
b31867b6 AM |
6326 | fh = defined_code_entry (eh); |
6327 | if (fh != NULL) | |
ccfa59ea AM |
6328 | { |
6329 | /* They also mark their opd section. */ | |
74f0fb50 | 6330 | eh->elf.root.u.def.section->gc_mark = 1; |
ccfa59ea | 6331 | |
b31867b6 | 6332 | rsec = fh->elf.root.u.def.section; |
ccfa59ea | 6333 | } |
8387904d AM |
6334 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL |
6335 | && opd_entry_value (eh->elf.root.u.def.section, | |
6336 | eh->elf.root.u.def.value, | |
aef36ac1 | 6337 | &rsec, NULL, FALSE) != (bfd_vma) -1) |
74f0fb50 | 6338 | eh->elf.root.u.def.section->gc_mark = 1; |
ccfa59ea | 6339 | else |
1e2f5b6e AM |
6340 | rsec = h->root.u.def.section; |
6341 | break; | |
5bd4f169 AM |
6342 | |
6343 | case bfd_link_hash_common: | |
1e2f5b6e AM |
6344 | rsec = h->root.u.c.p->section; |
6345 | break; | |
5bd4f169 AM |
6346 | |
6347 | default: | |
fb34365b | 6348 | return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); |
5bd4f169 AM |
6349 | } |
6350 | } | |
6351 | } | |
6352 | else | |
6353 | { | |
74f0fb50 | 6354 | struct _opd_sec_data *opd; |
1e2f5b6e AM |
6355 | |
6356 | rsec = bfd_section_from_elf_index (sec->owner, sym->st_shndx); | |
74f0fb50 AM |
6357 | opd = get_opd_info (rsec); |
6358 | if (opd != NULL && opd->func_sec != NULL) | |
ccfa59ea | 6359 | { |
74f0fb50 | 6360 | rsec->gc_mark = 1; |
ccfa59ea | 6361 | |
51aecdc5 | 6362 | rsec = opd->func_sec[OPD_NDX (sym->st_value + rel->r_addend)]; |
ccfa59ea | 6363 | } |
5bd4f169 AM |
6364 | } |
6365 | ||
1e2f5b6e | 6366 | return rsec; |
5bd4f169 AM |
6367 | } |
6368 | ||
65f38f15 AM |
6369 | /* Update the .got, .plt. and dynamic reloc reference counts for the |
6370 | section being removed. */ | |
5bd4f169 | 6371 | |
b34976b6 | 6372 | static bfd_boolean |
4ce794b7 AM |
6373 | ppc64_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info, |
6374 | asection *sec, const Elf_Internal_Rela *relocs) | |
5bd4f169 | 6375 | { |
411e1bfb | 6376 | struct ppc_link_hash_table *htab; |
5bd4f169 AM |
6377 | Elf_Internal_Shdr *symtab_hdr; |
6378 | struct elf_link_hash_entry **sym_hashes; | |
411e1bfb | 6379 | struct got_entry **local_got_ents; |
5bd4f169 | 6380 | const Elf_Internal_Rela *rel, *relend; |
5bd4f169 | 6381 | |
7dda2462 TG |
6382 | if (info->relocatable) |
6383 | return TRUE; | |
6384 | ||
680a3378 AM |
6385 | if ((sec->flags & SEC_ALLOC) == 0) |
6386 | return TRUE; | |
6387 | ||
ec338859 AM |
6388 | elf_section_data (sec)->local_dynrel = NULL; |
6389 | ||
411e1bfb | 6390 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
6391 | if (htab == NULL) |
6392 | return FALSE; | |
6393 | ||
0ffa91dd | 6394 | symtab_hdr = &elf_symtab_hdr (abfd); |
5bd4f169 | 6395 | sym_hashes = elf_sym_hashes (abfd); |
411e1bfb | 6396 | local_got_ents = elf_local_got_ents (abfd); |
5bd4f169 AM |
6397 | |
6398 | relend = relocs + sec->reloc_count; | |
6399 | for (rel = relocs; rel < relend; rel++) | |
a33d1f77 AM |
6400 | { |
6401 | unsigned long r_symndx; | |
04c9666a | 6402 | enum elf_ppc64_reloc_type r_type; |
58ac9f71 | 6403 | struct elf_link_hash_entry *h = NULL; |
f961d9dd | 6404 | unsigned char tls_type = 0; |
5bd4f169 | 6405 | |
a33d1f77 | 6406 | r_symndx = ELF64_R_SYM (rel->r_info); |
4ce794b7 | 6407 | r_type = ELF64_R_TYPE (rel->r_info); |
58ac9f71 AM |
6408 | if (r_symndx >= symtab_hdr->sh_info) |
6409 | { | |
6410 | struct ppc_link_hash_entry *eh; | |
6061a67d AM |
6411 | struct elf_dyn_relocs **pp; |
6412 | struct elf_dyn_relocs *p; | |
58ac9f71 AM |
6413 | |
6414 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
b31867b6 | 6415 | h = elf_follow_link (h); |
58ac9f71 AM |
6416 | eh = (struct ppc_link_hash_entry *) h; |
6417 | ||
6418 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next) | |
6419 | if (p->sec == sec) | |
6420 | { | |
6421 | /* Everything must go for SEC. */ | |
6422 | *pp = p->next; | |
6423 | break; | |
6424 | } | |
6425 | } | |
6426 | ||
e054468f AM |
6427 | if (is_branch_reloc (r_type)) |
6428 | { | |
6429 | struct plt_entry **ifunc = NULL; | |
6430 | if (h != NULL) | |
6431 | { | |
6432 | if (h->type == STT_GNU_IFUNC) | |
6433 | ifunc = &h->plt.plist; | |
6434 | } | |
6435 | else if (local_got_ents != NULL) | |
6436 | { | |
6437 | struct plt_entry **local_plt = (struct plt_entry **) | |
6438 | (local_got_ents + symtab_hdr->sh_info); | |
f961d9dd | 6439 | unsigned char *local_got_tls_masks = (unsigned char *) |
e054468f AM |
6440 | (local_plt + symtab_hdr->sh_info); |
6441 | if ((local_got_tls_masks[r_symndx] & PLT_IFUNC) != 0) | |
6442 | ifunc = local_plt + r_symndx; | |
6443 | } | |
6444 | if (ifunc != NULL) | |
6445 | { | |
6446 | struct plt_entry *ent; | |
6447 | ||
6448 | for (ent = *ifunc; ent != NULL; ent = ent->next) | |
6449 | if (ent->addend == rel->r_addend) | |
6450 | break; | |
6451 | if (ent == NULL) | |
6452 | abort (); | |
6453 | if (ent->plt.refcount > 0) | |
6454 | ent->plt.refcount -= 1; | |
6455 | continue; | |
6456 | } | |
6457 | } | |
6458 | ||
a33d1f77 AM |
6459 | switch (r_type) |
6460 | { | |
411e1bfb AM |
6461 | case R_PPC64_GOT_TLSLD16: |
6462 | case R_PPC64_GOT_TLSLD16_LO: | |
6463 | case R_PPC64_GOT_TLSLD16_HI: | |
6464 | case R_PPC64_GOT_TLSLD16_HA: | |
951fd09b | 6465 | tls_type = TLS_TLS | TLS_LD; |
411e1bfb AM |
6466 | goto dogot; |
6467 | ||
6468 | case R_PPC64_GOT_TLSGD16: | |
6469 | case R_PPC64_GOT_TLSGD16_LO: | |
6470 | case R_PPC64_GOT_TLSGD16_HI: | |
6471 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b | 6472 | tls_type = TLS_TLS | TLS_GD; |
411e1bfb AM |
6473 | goto dogot; |
6474 | ||
6475 | case R_PPC64_GOT_TPREL16_DS: | |
6476 | case R_PPC64_GOT_TPREL16_LO_DS: | |
6477 | case R_PPC64_GOT_TPREL16_HI: | |
6478 | case R_PPC64_GOT_TPREL16_HA: | |
6479 | tls_type = TLS_TLS | TLS_TPREL; | |
6480 | goto dogot; | |
6481 | ||
6482 | case R_PPC64_GOT_DTPREL16_DS: | |
6483 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
6484 | case R_PPC64_GOT_DTPREL16_HI: | |
6485 | case R_PPC64_GOT_DTPREL16_HA: | |
6486 | tls_type = TLS_TLS | TLS_DTPREL; | |
6487 | goto dogot; | |
6488 | ||
a33d1f77 AM |
6489 | case R_PPC64_GOT16: |
6490 | case R_PPC64_GOT16_DS: | |
6491 | case R_PPC64_GOT16_HA: | |
6492 | case R_PPC64_GOT16_HI: | |
6493 | case R_PPC64_GOT16_LO: | |
6494 | case R_PPC64_GOT16_LO_DS: | |
411e1bfb AM |
6495 | dogot: |
6496 | { | |
6497 | struct got_entry *ent; | |
6498 | ||
58ac9f71 AM |
6499 | if (h != NULL) |
6500 | ent = h->got.glist; | |
411e1bfb AM |
6501 | else |
6502 | ent = local_got_ents[r_symndx]; | |
6503 | ||
6504 | for (; ent != NULL; ent = ent->next) | |
6505 | if (ent->addend == rel->r_addend | |
e717da7e | 6506 | && ent->owner == abfd |
411e1bfb AM |
6507 | && ent->tls_type == tls_type) |
6508 | break; | |
6509 | if (ent == NULL) | |
6510 | abort (); | |
6511 | if (ent->got.refcount > 0) | |
6512 | ent->got.refcount -= 1; | |
6513 | } | |
a33d1f77 | 6514 | break; |
65f38f15 | 6515 | |
a33d1f77 AM |
6516 | case R_PPC64_PLT16_HA: |
6517 | case R_PPC64_PLT16_HI: | |
6518 | case R_PPC64_PLT16_LO: | |
6519 | case R_PPC64_PLT32: | |
6520 | case R_PPC64_PLT64: | |
721956f4 AM |
6521 | case R_PPC64_REL14: |
6522 | case R_PPC64_REL14_BRNTAKEN: | |
6523 | case R_PPC64_REL14_BRTAKEN: | |
5d1634d7 | 6524 | case R_PPC64_REL24: |
58ac9f71 | 6525 | if (h != NULL) |
5d1634d7 | 6526 | { |
411e1bfb AM |
6527 | struct plt_entry *ent; |
6528 | ||
411e1bfb AM |
6529 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) |
6530 | if (ent->addend == rel->r_addend) | |
6531 | break; | |
7c6c1722 | 6532 | if (ent != NULL && ent->plt.refcount > 0) |
411e1bfb | 6533 | ent->plt.refcount -= 1; |
5d1634d7 | 6534 | } |
e86ce104 | 6535 | break; |
5d1634d7 | 6536 | |
a33d1f77 AM |
6537 | default: |
6538 | break; | |
6539 | } | |
6540 | } | |
b34976b6 | 6541 | return TRUE; |
5bd4f169 AM |
6542 | } |
6543 | ||
deb0e272 AM |
6544 | /* The maximum size of .sfpr. */ |
6545 | #define SFPR_MAX (218*4) | |
6546 | ||
6547 | struct sfpr_def_parms | |
6548 | { | |
699733f6 AM |
6549 | const char name[12]; |
6550 | unsigned char lo, hi; | |
deb0e272 AM |
6551 | bfd_byte * (*write_ent) (bfd *, bfd_byte *, int); |
6552 | bfd_byte * (*write_tail) (bfd *, bfd_byte *, int); | |
6553 | }; | |
6554 | ||
6555 | /* Auto-generate _save*, _rest* functions in .sfpr. */ | |
6556 | ||
4dfe6ac6 | 6557 | static bfd_boolean |
deb0e272 AM |
6558 | sfpr_define (struct bfd_link_info *info, const struct sfpr_def_parms *parm) |
6559 | { | |
6560 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
6561 | unsigned int i; | |
6562 | size_t len = strlen (parm->name); | |
6563 | bfd_boolean writing = FALSE; | |
699733f6 | 6564 | char sym[16]; |
deb0e272 | 6565 | |
4dfe6ac6 NC |
6566 | if (htab == NULL) |
6567 | return FALSE; | |
6568 | ||
deb0e272 AM |
6569 | memcpy (sym, parm->name, len); |
6570 | sym[len + 2] = 0; | |
6571 | ||
6572 | for (i = parm->lo; i <= parm->hi; i++) | |
6573 | { | |
6574 | struct elf_link_hash_entry *h; | |
6575 | ||
6576 | sym[len + 0] = i / 10 + '0'; | |
6577 | sym[len + 1] = i % 10 + '0'; | |
6578 | h = elf_link_hash_lookup (&htab->elf, sym, FALSE, FALSE, TRUE); | |
6579 | if (h != NULL | |
f5385ebf | 6580 | && !h->def_regular) |
deb0e272 AM |
6581 | { |
6582 | h->root.type = bfd_link_hash_defined; | |
6583 | h->root.u.def.section = htab->sfpr; | |
6584 | h->root.u.def.value = htab->sfpr->size; | |
6585 | h->type = STT_FUNC; | |
f5385ebf | 6586 | h->def_regular = 1; |
deb0e272 AM |
6587 | _bfd_elf_link_hash_hide_symbol (info, h, TRUE); |
6588 | writing = TRUE; | |
6589 | if (htab->sfpr->contents == NULL) | |
6590 | { | |
6591 | htab->sfpr->contents = bfd_alloc (htab->elf.dynobj, SFPR_MAX); | |
6592 | if (htab->sfpr->contents == NULL) | |
6593 | return FALSE; | |
6594 | } | |
6595 | } | |
6596 | if (writing) | |
6597 | { | |
6598 | bfd_byte *p = htab->sfpr->contents + htab->sfpr->size; | |
6599 | if (i != parm->hi) | |
6600 | p = (*parm->write_ent) (htab->elf.dynobj, p, i); | |
6601 | else | |
6602 | p = (*parm->write_tail) (htab->elf.dynobj, p, i); | |
6603 | htab->sfpr->size = p - htab->sfpr->contents; | |
6604 | } | |
6605 | } | |
6606 | ||
6607 | return TRUE; | |
6608 | } | |
6609 | ||
6610 | static bfd_byte * | |
6611 | savegpr0 (bfd *abfd, bfd_byte *p, int r) | |
6612 | { | |
6613 | bfd_put_32 (abfd, STD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
6614 | return p + 4; | |
6615 | } | |
6616 | ||
6617 | static bfd_byte * | |
6618 | savegpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
6619 | { | |
6620 | p = savegpr0 (abfd, p, r); | |
a078d95a | 6621 | bfd_put_32 (abfd, STD_R0_0R1 + STK_LR, p); |
deb0e272 AM |
6622 | p = p + 4; |
6623 | bfd_put_32 (abfd, BLR, p); | |
6624 | return p + 4; | |
6625 | } | |
6626 | ||
6627 | static bfd_byte * | |
6628 | restgpr0 (bfd *abfd, bfd_byte *p, int r) | |
6629 | { | |
6630 | bfd_put_32 (abfd, LD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
6631 | return p + 4; | |
6632 | } | |
6633 | ||
6634 | static bfd_byte * | |
6635 | restgpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
6636 | { | |
a078d95a | 6637 | bfd_put_32 (abfd, LD_R0_0R1 + STK_LR, p); |
deb0e272 AM |
6638 | p = p + 4; |
6639 | p = restgpr0 (abfd, p, r); | |
6640 | bfd_put_32 (abfd, MTLR_R0, p); | |
6641 | p = p + 4; | |
6642 | if (r == 29) | |
6643 | { | |
6644 | p = restgpr0 (abfd, p, 30); | |
6645 | p = restgpr0 (abfd, p, 31); | |
6646 | } | |
6647 | bfd_put_32 (abfd, BLR, p); | |
6648 | return p + 4; | |
6649 | } | |
6650 | ||
6651 | static bfd_byte * | |
6652 | savegpr1 (bfd *abfd, bfd_byte *p, int r) | |
6653 | { | |
6654 | bfd_put_32 (abfd, STD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
6655 | return p + 4; | |
6656 | } | |
6657 | ||
6658 | static bfd_byte * | |
6659 | savegpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
6660 | { | |
6661 | p = savegpr1 (abfd, p, r); | |
6662 | bfd_put_32 (abfd, BLR, p); | |
6663 | return p + 4; | |
6664 | } | |
6665 | ||
6666 | static bfd_byte * | |
6667 | restgpr1 (bfd *abfd, bfd_byte *p, int r) | |
6668 | { | |
6669 | bfd_put_32 (abfd, LD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
6670 | return p + 4; | |
6671 | } | |
6672 | ||
6673 | static bfd_byte * | |
6674 | restgpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
6675 | { | |
6676 | p = restgpr1 (abfd, p, r); | |
6677 | bfd_put_32 (abfd, BLR, p); | |
6678 | return p + 4; | |
6679 | } | |
6680 | ||
6681 | static bfd_byte * | |
6682 | savefpr (bfd *abfd, bfd_byte *p, int r) | |
6683 | { | |
6684 | bfd_put_32 (abfd, STFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
6685 | return p + 4; | |
6686 | } | |
6687 | ||
6688 | static bfd_byte * | |
6689 | savefpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
6690 | { | |
6691 | p = savefpr (abfd, p, r); | |
a078d95a | 6692 | bfd_put_32 (abfd, STD_R0_0R1 + STK_LR, p); |
deb0e272 AM |
6693 | p = p + 4; |
6694 | bfd_put_32 (abfd, BLR, p); | |
6695 | return p + 4; | |
6696 | } | |
6697 | ||
6698 | static bfd_byte * | |
6699 | restfpr (bfd *abfd, bfd_byte *p, int r) | |
6700 | { | |
6701 | bfd_put_32 (abfd, LFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
6702 | return p + 4; | |
6703 | } | |
6704 | ||
6705 | static bfd_byte * | |
6706 | restfpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
6707 | { | |
a078d95a | 6708 | bfd_put_32 (abfd, LD_R0_0R1 + STK_LR, p); |
deb0e272 AM |
6709 | p = p + 4; |
6710 | p = restfpr (abfd, p, r); | |
6711 | bfd_put_32 (abfd, MTLR_R0, p); | |
6712 | p = p + 4; | |
6713 | if (r == 29) | |
6714 | { | |
6715 | p = restfpr (abfd, p, 30); | |
6716 | p = restfpr (abfd, p, 31); | |
6717 | } | |
6718 | bfd_put_32 (abfd, BLR, p); | |
6719 | return p + 4; | |
6720 | } | |
6721 | ||
6722 | static bfd_byte * | |
6723 | savefpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
6724 | { | |
6725 | p = savefpr (abfd, p, r); | |
6726 | bfd_put_32 (abfd, BLR, p); | |
6727 | return p + 4; | |
6728 | } | |
6729 | ||
6730 | static bfd_byte * | |
6731 | restfpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
6732 | { | |
6733 | p = restfpr (abfd, p, r); | |
6734 | bfd_put_32 (abfd, BLR, p); | |
6735 | return p + 4; | |
6736 | } | |
6737 | ||
6738 | static bfd_byte * | |
6739 | savevr (bfd *abfd, bfd_byte *p, int r) | |
6740 | { | |
6741 | bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p); | |
6742 | p = p + 4; | |
6743 | bfd_put_32 (abfd, STVX_VR0_R12_R0 + (r << 21), p); | |
6744 | return p + 4; | |
6745 | } | |
6746 | ||
6747 | static bfd_byte * | |
6748 | savevr_tail (bfd *abfd, bfd_byte *p, int r) | |
6749 | { | |
6750 | p = savevr (abfd, p, r); | |
6751 | bfd_put_32 (abfd, BLR, p); | |
6752 | return p + 4; | |
6753 | } | |
6754 | ||
6755 | static bfd_byte * | |
6756 | restvr (bfd *abfd, bfd_byte *p, int r) | |
6757 | { | |
6758 | bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p); | |
6759 | p = p + 4; | |
6760 | bfd_put_32 (abfd, LVX_VR0_R12_R0 + (r << 21), p); | |
6761 | return p + 4; | |
6762 | } | |
6763 | ||
6764 | static bfd_byte * | |
6765 | restvr_tail (bfd *abfd, bfd_byte *p, int r) | |
6766 | { | |
6767 | p = restvr (abfd, p, r); | |
6768 | bfd_put_32 (abfd, BLR, p); | |
6769 | return p + 4; | |
6770 | } | |
6771 | ||
e86ce104 AM |
6772 | /* Called via elf_link_hash_traverse to transfer dynamic linking |
6773 | information on function code symbol entries to their corresponding | |
6774 | function descriptor symbol entries. */ | |
deb0e272 | 6775 | |
b34976b6 | 6776 | static bfd_boolean |
4ce794b7 | 6777 | func_desc_adjust (struct elf_link_hash_entry *h, void *inf) |
5bd4f169 | 6778 | { |
e86ce104 | 6779 | struct bfd_link_info *info; |
65f38f15 | 6780 | struct ppc_link_hash_table *htab; |
411e1bfb | 6781 | struct plt_entry *ent; |
50bc7936 AM |
6782 | struct ppc_link_hash_entry *fh; |
6783 | struct ppc_link_hash_entry *fdh; | |
6784 | bfd_boolean force_local; | |
5bd4f169 | 6785 | |
50bc7936 AM |
6786 | fh = (struct ppc_link_hash_entry *) h; |
6787 | if (fh->elf.root.type == bfd_link_hash_indirect) | |
b34976b6 | 6788 | return TRUE; |
e86ce104 | 6789 | |
4ce794b7 | 6790 | info = inf; |
65f38f15 | 6791 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
6792 | if (htab == NULL) |
6793 | return FALSE; | |
5bd4f169 | 6794 | |
c09bdfe5 AM |
6795 | /* Resolve undefined references to dot-symbols as the value |
6796 | in the function descriptor, if we have one in a regular object. | |
6797 | This is to satisfy cases like ".quad .foo". Calls to functions | |
6798 | in dynamic objects are handled elsewhere. */ | |
6799 | if (fh->elf.root.type == bfd_link_hash_undefweak | |
6800 | && fh->was_undefined | |
b31867b6 AM |
6801 | && (fdh = defined_func_desc (fh)) != NULL |
6802 | && get_opd_info (fdh->elf.root.u.def.section) != NULL | |
6803 | && opd_entry_value (fdh->elf.root.u.def.section, | |
6804 | fdh->elf.root.u.def.value, | |
c09bdfe5 | 6805 | &fh->elf.root.u.def.section, |
aef36ac1 | 6806 | &fh->elf.root.u.def.value, FALSE) != (bfd_vma) -1) |
c09bdfe5 | 6807 | { |
b31867b6 | 6808 | fh->elf.root.type = fdh->elf.root.type; |
f5385ebf | 6809 | fh->elf.forced_local = 1; |
b31867b6 AM |
6810 | fh->elf.def_regular = fdh->elf.def_regular; |
6811 | fh->elf.def_dynamic = fdh->elf.def_dynamic; | |
c09bdfe5 AM |
6812 | } |
6813 | ||
e86ce104 AM |
6814 | /* If this is a function code symbol, transfer dynamic linking |
6815 | information to the function descriptor symbol. */ | |
50bc7936 | 6816 | if (!fh->is_func) |
b34976b6 | 6817 | return TRUE; |
e86ce104 | 6818 | |
50bc7936 | 6819 | for (ent = fh->elf.plt.plist; ent != NULL; ent = ent->next) |
411e1bfb AM |
6820 | if (ent->plt.refcount > 0) |
6821 | break; | |
50bc7936 AM |
6822 | if (ent == NULL |
6823 | || fh->elf.root.root.string[0] != '.' | |
6824 | || fh->elf.root.root.string[1] == '\0') | |
6825 | return TRUE; | |
5bd4f169 | 6826 | |
50bc7936 AM |
6827 | /* Find the corresponding function descriptor symbol. Create it |
6828 | as undefined if necessary. */ | |
5bd4f169 | 6829 | |
b31867b6 | 6830 | fdh = lookup_fdh (fh, htab); |
50bc7936 | 6831 | if (fdh == NULL |
df131623 | 6832 | && !info->executable |
50bc7936 AM |
6833 | && (fh->elf.root.type == bfd_link_hash_undefined |
6834 | || fh->elf.root.type == bfd_link_hash_undefweak)) | |
6835 | { | |
908b32fc | 6836 | fdh = make_fdh (info, fh); |
bb700d78 AM |
6837 | if (fdh == NULL) |
6838 | return FALSE; | |
50bc7936 | 6839 | } |
648cca2c | 6840 | |
908b32fc | 6841 | /* Fake function descriptors are made undefweak. If the function |
433817dd AM |
6842 | code symbol is strong undefined, make the fake sym the same. |
6843 | If the function code symbol is defined, then force the fake | |
6844 | descriptor local; We can't support overriding of symbols in a | |
6845 | shared library on a fake descriptor. */ | |
908b32fc AM |
6846 | |
6847 | if (fdh != NULL | |
6848 | && fdh->fake | |
433817dd | 6849 | && fdh->elf.root.type == bfd_link_hash_undefweak) |
908b32fc | 6850 | { |
433817dd AM |
6851 | if (fh->elf.root.type == bfd_link_hash_undefined) |
6852 | { | |
6853 | fdh->elf.root.type = bfd_link_hash_undefined; | |
6854 | bfd_link_add_undef (&htab->elf.root, &fdh->elf.root); | |
6855 | } | |
6856 | else if (fh->elf.root.type == bfd_link_hash_defined | |
6857 | || fh->elf.root.type == bfd_link_hash_defweak) | |
6858 | { | |
6859 | _bfd_elf_link_hash_hide_symbol (info, &fdh->elf, TRUE); | |
6860 | } | |
908b32fc AM |
6861 | } |
6862 | ||
50bc7936 | 6863 | if (fdh != NULL |
f5385ebf | 6864 | && !fdh->elf.forced_local |
df131623 | 6865 | && (!info->executable |
f5385ebf AM |
6866 | || fdh->elf.def_dynamic |
6867 | || fdh->elf.ref_dynamic | |
50bc7936 AM |
6868 | || (fdh->elf.root.type == bfd_link_hash_undefweak |
6869 | && ELF_ST_VISIBILITY (fdh->elf.other) == STV_DEFAULT))) | |
6870 | { | |
6871 | if (fdh->elf.dynindx == -1) | |
c152c796 | 6872 | if (! bfd_elf_link_record_dynamic_symbol (info, &fdh->elf)) |
50bc7936 | 6873 | return FALSE; |
f5385ebf AM |
6874 | fdh->elf.ref_regular |= fh->elf.ref_regular; |
6875 | fdh->elf.ref_dynamic |= fh->elf.ref_dynamic; | |
6876 | fdh->elf.ref_regular_nonweak |= fh->elf.ref_regular_nonweak; | |
6877 | fdh->elf.non_got_ref |= fh->elf.non_got_ref; | |
50bc7936 | 6878 | if (ELF_ST_VISIBILITY (fh->elf.other) == STV_DEFAULT) |
e86ce104 | 6879 | { |
40d16e0b | 6880 | move_plt_plist (fh, fdh); |
f5385ebf | 6881 | fdh->elf.needs_plt = 1; |
e86ce104 | 6882 | } |
50bc7936 | 6883 | fdh->is_func_descriptor = 1; |
34814b9f AM |
6884 | fdh->oh = fh; |
6885 | fh->oh = fdh; | |
e86ce104 AM |
6886 | } |
6887 | ||
50bc7936 AM |
6888 | /* Now that the info is on the function descriptor, clear the |
6889 | function code sym info. Any function code syms for which we | |
6890 | don't have a definition in a regular file, we force local. | |
6891 | This prevents a shared library from exporting syms that have | |
6892 | been imported from another library. Function code syms that | |
6893 | are really in the library we must leave global to prevent the | |
6894 | linker dragging in a definition from a static library. */ | |
93f3fa99 AM |
6895 | force_local = (!fh->elf.def_regular |
6896 | || fdh == NULL | |
6897 | || !fdh->elf.def_regular | |
6898 | || fdh->elf.forced_local); | |
50bc7936 AM |
6899 | _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local); |
6900 | ||
b34976b6 | 6901 | return TRUE; |
e86ce104 | 6902 | } |
40b8271b | 6903 | |
e86ce104 | 6904 | /* Called near the start of bfd_elf_size_dynamic_sections. We use |
82bd7b59 AM |
6905 | this hook to a) provide some gcc support functions, and b) transfer |
6906 | dynamic linking information gathered so far on function code symbol | |
6907 | entries, to their corresponding function descriptor symbol entries. */ | |
deb0e272 | 6908 | |
b34976b6 | 6909 | static bfd_boolean |
4ce794b7 AM |
6910 | ppc64_elf_func_desc_adjust (bfd *obfd ATTRIBUTE_UNUSED, |
6911 | struct bfd_link_info *info) | |
e86ce104 AM |
6912 | { |
6913 | struct ppc_link_hash_table *htab; | |
82bd7b59 | 6914 | unsigned int i; |
27fc25a1 | 6915 | static const struct sfpr_def_parms funcs[] = |
deb0e272 AM |
6916 | { |
6917 | { "_savegpr0_", 14, 31, savegpr0, savegpr0_tail }, | |
6918 | { "_restgpr0_", 14, 29, restgpr0, restgpr0_tail }, | |
6919 | { "_restgpr0_", 30, 31, restgpr0, restgpr0_tail }, | |
6920 | { "_savegpr1_", 14, 31, savegpr1, savegpr1_tail }, | |
6921 | { "_restgpr1_", 14, 31, restgpr1, restgpr1_tail }, | |
6922 | { "_savefpr_", 14, 31, savefpr, savefpr0_tail }, | |
6923 | { "_restfpr_", 14, 29, restfpr, restfpr0_tail }, | |
6924 | { "_restfpr_", 30, 31, restfpr, restfpr0_tail }, | |
6925 | { "._savef", 14, 31, savefpr, savefpr1_tail }, | |
6926 | { "._restf", 14, 31, restfpr, restfpr1_tail }, | |
6927 | { "_savevr_", 20, 31, savevr, savevr_tail }, | |
6928 | { "_restvr_", 20, 31, restvr, restvr_tail } | |
6929 | }; | |
e86ce104 AM |
6930 | |
6931 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
6932 | if (htab == NULL) |
6933 | return FALSE; | |
6934 | ||
5295321c AM |
6935 | if (!info->relocatable |
6936 | && htab->elf.hgot != NULL) | |
dba6fa9b AM |
6937 | { |
6938 | _bfd_elf_link_hash_hide_symbol (info, htab->elf.hgot, TRUE); | |
6939 | /* Make .TOC. defined so as to prevent it being made dynamic. | |
6940 | The wrong value here is fixed later in ppc64_elf_set_toc. */ | |
6941 | htab->elf.hgot->type = STT_OBJECT; | |
6942 | htab->elf.hgot->root.type = bfd_link_hash_defined; | |
6943 | htab->elf.hgot->root.u.def.value = 0; | |
6944 | htab->elf.hgot->root.u.def.section = bfd_abs_section_ptr; | |
6945 | htab->elf.hgot->def_regular = 1; | |
6946 | htab->elf.hgot->other = ((htab->elf.hgot->other & ~ELF_ST_VISIBILITY (-1)) | |
6947 | | STV_HIDDEN); | |
6948 | } | |
c66bb0ee | 6949 | |
82bd7b59 AM |
6950 | if (htab->sfpr == NULL) |
6951 | /* We don't have any relocs. */ | |
b34976b6 | 6952 | return TRUE; |
82bd7b59 | 6953 | |
deb0e272 AM |
6954 | /* Provide any missing _save* and _rest* functions. */ |
6955 | htab->sfpr->size = 0; | |
7d4c687d | 6956 | if (htab->params->save_restore_funcs) |
27fc25a1 AM |
6957 | for (i = 0; i < sizeof (funcs) / sizeof (funcs[0]); i++) |
6958 | if (!sfpr_define (info, &funcs[i])) | |
6959 | return FALSE; | |
82bd7b59 | 6960 | |
4ce794b7 | 6961 | elf_link_hash_traverse (&htab->elf, func_desc_adjust, info); |
805fc799 | 6962 | |
eea6121a | 6963 | if (htab->sfpr->size == 0) |
8423293d | 6964 | htab->sfpr->flags |= SEC_EXCLUDE; |
82bd7b59 | 6965 | |
b34976b6 | 6966 | return TRUE; |
e86ce104 AM |
6967 | } |
6968 | ||
a345bc8d AM |
6969 | /* Return true if we have dynamic relocs that apply to read-only sections. */ |
6970 | ||
6971 | static bfd_boolean | |
6972 | readonly_dynrelocs (struct elf_link_hash_entry *h) | |
6973 | { | |
6974 | struct ppc_link_hash_entry *eh; | |
6975 | struct elf_dyn_relocs *p; | |
6976 | ||
6977 | eh = (struct ppc_link_hash_entry *) h; | |
6978 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
6979 | { | |
6980 | asection *s = p->sec->output_section; | |
6981 | ||
6982 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
6983 | return TRUE; | |
6984 | } | |
6985 | return FALSE; | |
6986 | } | |
6987 | ||
e86ce104 AM |
6988 | /* Adjust a symbol defined by a dynamic object and referenced by a |
6989 | regular object. The current definition is in some section of the | |
6990 | dynamic object, but we're not including those sections. We have to | |
6991 | change the definition to something the rest of the link can | |
6992 | understand. */ | |
6993 | ||
b34976b6 | 6994 | static bfd_boolean |
4ce794b7 AM |
6995 | ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info *info, |
6996 | struct elf_link_hash_entry *h) | |
e86ce104 AM |
6997 | { |
6998 | struct ppc_link_hash_table *htab; | |
e86ce104 | 6999 | asection *s; |
e86ce104 AM |
7000 | |
7001 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
7002 | if (htab == NULL) |
7003 | return FALSE; | |
e86ce104 AM |
7004 | |
7005 | /* Deal with function syms. */ | |
7006 | if (h->type == STT_FUNC | |
e054468f | 7007 | || h->type == STT_GNU_IFUNC |
f5385ebf | 7008 | || h->needs_plt) |
e86ce104 AM |
7009 | { |
7010 | /* Clear procedure linkage table information for any symbol that | |
7011 | won't need a .plt entry. */ | |
411e1bfb AM |
7012 | struct plt_entry *ent; |
7013 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) | |
7014 | if (ent->plt.refcount > 0) | |
7015 | break; | |
8387904d | 7016 | if (ent == NULL |
e054468f AM |
7017 | || (h->type != STT_GNU_IFUNC |
7018 | && (SYMBOL_CALLS_LOCAL (info, h) | |
7019 | || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
7020 | && h->root.type == bfd_link_hash_undefweak)))) | |
40b8271b | 7021 | { |
411e1bfb | 7022 | h->plt.plist = NULL; |
f5385ebf | 7023 | h->needs_plt = 0; |
d1eca1e4 | 7024 | h->pointer_equality_needed = 0; |
40b8271b | 7025 | } |
a345bc8d AM |
7026 | else if (abiversion (info->output_bfd) == 2) |
7027 | { | |
d1eca1e4 AM |
7028 | /* Taking a function's address in a read/write section |
7029 | doesn't require us to define the function symbol in the | |
7030 | executable on a global entry stub. A dynamic reloc can | |
7031 | be used instead. */ | |
7032 | if (h->pointer_equality_needed | |
1009ef28 | 7033 | && h->type != STT_GNU_IFUNC |
d1eca1e4 AM |
7034 | && !readonly_dynrelocs (h)) |
7035 | { | |
7036 | h->pointer_equality_needed = 0; | |
7037 | h->non_got_ref = 0; | |
7038 | } | |
7039 | ||
a345bc8d AM |
7040 | /* After adjust_dynamic_symbol, non_got_ref set in the |
7041 | non-shared case means that we have allocated space in | |
7042 | .dynbss for the symbol and thus dyn_relocs for this | |
7043 | symbol should be discarded. | |
7044 | If we get here we know we are making a PLT entry for this | |
7045 | symbol, and in an executable we'd normally resolve | |
7046 | relocations against this symbol to the PLT entry. Allow | |
7047 | dynamic relocs if the reference is weak, and the dynamic | |
7048 | relocs will not cause text relocation. */ | |
d1eca1e4 AM |
7049 | else if (!h->ref_regular_nonweak |
7050 | && h->non_got_ref | |
7051 | && h->type != STT_GNU_IFUNC | |
7052 | && !readonly_dynrelocs (h)) | |
a345bc8d AM |
7053 | h->non_got_ref = 0; |
7054 | ||
7055 | /* If making a plt entry, then we don't need copy relocs. */ | |
7056 | return TRUE; | |
7057 | } | |
5bd4f169 | 7058 | } |
bbd7ec4a | 7059 | else |
411e1bfb | 7060 | h->plt.plist = NULL; |
5bd4f169 AM |
7061 | |
7062 | /* If this is a weak symbol, and there is a real definition, the | |
7063 | processor independent code will have arranged for us to see the | |
7064 | real definition first, and we can just use the same value. */ | |
f6e332e6 | 7065 | if (h->u.weakdef != NULL) |
5bd4f169 | 7066 | { |
f6e332e6 AM |
7067 | BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined |
7068 | || h->u.weakdef->root.type == bfd_link_hash_defweak); | |
7069 | h->root.u.def.section = h->u.weakdef->root.u.def.section; | |
7070 | h->root.u.def.value = h->u.weakdef->root.u.def.value; | |
a23b6845 | 7071 | if (ELIMINATE_COPY_RELOCS) |
f6e332e6 | 7072 | h->non_got_ref = h->u.weakdef->non_got_ref; |
b34976b6 | 7073 | return TRUE; |
5bd4f169 AM |
7074 | } |
7075 | ||
5bd4f169 AM |
7076 | /* If we are creating a shared library, we must presume that the |
7077 | only references to the symbol are via the global offset table. | |
7078 | For such cases we need not do anything here; the relocations will | |
7079 | be handled correctly by relocate_section. */ | |
7080 | if (info->shared) | |
b34976b6 | 7081 | return TRUE; |
5bd4f169 | 7082 | |
65f38f15 AM |
7083 | /* If there are no references to this symbol that do not use the |
7084 | GOT, we don't need to generate a copy reloc. */ | |
f5385ebf | 7085 | if (!h->non_got_ref) |
b34976b6 | 7086 | return TRUE; |
65f38f15 | 7087 | |
b186458a JJ |
7088 | /* Don't generate a copy reloc for symbols defined in the executable. */ |
7089 | if (!h->def_dynamic || !h->ref_regular || h->def_regular) | |
7090 | return TRUE; | |
7091 | ||
a345bc8d AM |
7092 | /* If we didn't find any dynamic relocs in read-only sections, then |
7093 | we'll be keeping the dynamic relocs and avoiding the copy reloc. */ | |
7094 | if (ELIMINATE_COPY_RELOCS && !readonly_dynrelocs (h)) | |
65f38f15 | 7095 | { |
a345bc8d AM |
7096 | h->non_got_ref = 0; |
7097 | return TRUE; | |
65f38f15 AM |
7098 | } |
7099 | ||
5d35169e | 7100 | if (h->plt.plist != NULL) |
97b639ba AM |
7101 | { |
7102 | /* We should never get here, but unfortunately there are versions | |
7103 | of gcc out there that improperly (for this ABI) put initialized | |
7104 | function pointers, vtable refs and suchlike in read-only | |
7105 | sections. Allow them to proceed, but warn that this might | |
7106 | break at runtime. */ | |
25f53a85 | 7107 | info->callbacks->einfo |
bc30df16 | 7108 | (_("%P: copy reloc against `%T' requires lazy plt linking; " |
25f53a85 | 7109 | "avoid setting LD_BIND_NOW=1 or upgrade gcc\n"), |
97b639ba AM |
7110 | h->root.root.string); |
7111 | } | |
5d35169e AM |
7112 | |
7113 | /* This is a reference to a symbol defined by a dynamic object which | |
7114 | is not a function. */ | |
7115 | ||
5bd4f169 AM |
7116 | /* We must allocate the symbol in our .dynbss section, which will |
7117 | become part of the .bss section of the executable. There will be | |
7118 | an entry for this symbol in the .dynsym section. The dynamic | |
7119 | object will contain position independent code, so all references | |
7120 | from the dynamic object to this symbol will go through the global | |
7121 | offset table. The dynamic linker will use the .dynsym entry to | |
7122 | determine the address it must put in the global offset table, so | |
7123 | both the dynamic object and the regular object will refer to the | |
7124 | same memory location for the variable. */ | |
5bd4f169 | 7125 | |
04c9666a AM |
7126 | /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker |
7127 | to copy the initial value out of the dynamic object and into the | |
5bd4f169 AM |
7128 | runtime process image. We need to remember the offset into the |
7129 | .rela.bss section we are going to use. */ | |
1d7e9d18 | 7130 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0) |
5bd4f169 | 7131 | { |
eea6121a | 7132 | htab->relbss->size += sizeof (Elf64_External_Rela); |
f5385ebf | 7133 | h->needs_copy = 1; |
5bd4f169 AM |
7134 | } |
7135 | ||
4ce794b7 | 7136 | s = htab->dynbss; |
5bd4f169 | 7137 | |
6cabe1ea | 7138 | return _bfd_elf_adjust_dynamic_copy (info, h, s); |
5bd4f169 AM |
7139 | } |
7140 | ||
e86ce104 AM |
7141 | /* If given a function descriptor symbol, hide both the function code |
7142 | sym and the descriptor. */ | |
7143 | static void | |
4ce794b7 AM |
7144 | ppc64_elf_hide_symbol (struct bfd_link_info *info, |
7145 | struct elf_link_hash_entry *h, | |
7146 | bfd_boolean force_local) | |
e86ce104 | 7147 | { |
34814b9f | 7148 | struct ppc_link_hash_entry *eh; |
e86ce104 AM |
7149 | _bfd_elf_link_hash_hide_symbol (info, h, force_local); |
7150 | ||
34814b9f AM |
7151 | eh = (struct ppc_link_hash_entry *) h; |
7152 | if (eh->is_func_descriptor) | |
e86ce104 | 7153 | { |
34814b9f | 7154 | struct ppc_link_hash_entry *fh = eh->oh; |
e86ce104 | 7155 | |
721956f4 | 7156 | if (fh == NULL) |
d1329ca3 AM |
7157 | { |
7158 | const char *p, *q; | |
7159 | struct ppc_link_hash_table *htab; | |
7160 | char save; | |
7161 | ||
7162 | /* We aren't supposed to use alloca in BFD because on | |
7163 | systems which do not have alloca the version in libiberty | |
7164 | calls xmalloc, which might cause the program to crash | |
7165 | when it runs out of memory. This function doesn't have a | |
7166 | return status, so there's no way to gracefully return an | |
7167 | error. So cheat. We know that string[-1] can be safely | |
34814b9f AM |
7168 | accessed; It's either a string in an ELF string table, |
7169 | or allocated in an objalloc structure. */ | |
d1329ca3 | 7170 | |
34814b9f | 7171 | p = eh->elf.root.root.string - 1; |
d1329ca3 AM |
7172 | save = *p; |
7173 | *(char *) p = '.'; | |
7174 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
7175 | if (htab == NULL) |
7176 | return; | |
7177 | ||
34814b9f AM |
7178 | fh = (struct ppc_link_hash_entry *) |
7179 | elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE); | |
d1329ca3 AM |
7180 | *(char *) p = save; |
7181 | ||
7182 | /* Unfortunately, if it so happens that the string we were | |
7183 | looking for was allocated immediately before this string, | |
7184 | then we overwrote the string terminator. That's the only | |
7185 | reason the lookup should fail. */ | |
7186 | if (fh == NULL) | |
7187 | { | |
34814b9f AM |
7188 | q = eh->elf.root.root.string + strlen (eh->elf.root.root.string); |
7189 | while (q >= eh->elf.root.root.string && *q == *p) | |
d1329ca3 | 7190 | --q, --p; |
34814b9f AM |
7191 | if (q < eh->elf.root.root.string && *p == '.') |
7192 | fh = (struct ppc_link_hash_entry *) | |
7193 | elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE); | |
d1329ca3 AM |
7194 | } |
7195 | if (fh != NULL) | |
7196 | { | |
34814b9f AM |
7197 | eh->oh = fh; |
7198 | fh->oh = eh; | |
d1329ca3 AM |
7199 | } |
7200 | } | |
e86ce104 | 7201 | if (fh != NULL) |
34814b9f | 7202 | _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local); |
e86ce104 AM |
7203 | } |
7204 | } | |
7205 | ||
411e1bfb | 7206 | static bfd_boolean |
8843416a AM |
7207 | get_sym_h (struct elf_link_hash_entry **hp, |
7208 | Elf_Internal_Sym **symp, | |
7209 | asection **symsecp, | |
f961d9dd | 7210 | unsigned char **tls_maskp, |
8843416a AM |
7211 | Elf_Internal_Sym **locsymsp, |
7212 | unsigned long r_symndx, | |
7213 | bfd *ibfd) | |
411e1bfb | 7214 | { |
0ffa91dd | 7215 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd); |
411e1bfb AM |
7216 | |
7217 | if (r_symndx >= symtab_hdr->sh_info) | |
7218 | { | |
7219 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd); | |
7220 | struct elf_link_hash_entry *h; | |
7221 | ||
7222 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
b31867b6 | 7223 | h = elf_follow_link (h); |
411e1bfb AM |
7224 | |
7225 | if (hp != NULL) | |
7226 | *hp = h; | |
7227 | ||
7228 | if (symp != NULL) | |
7229 | *symp = NULL; | |
7230 | ||
7231 | if (symsecp != NULL) | |
7232 | { | |
7233 | asection *symsec = NULL; | |
7234 | if (h->root.type == bfd_link_hash_defined | |
7235 | || h->root.type == bfd_link_hash_defweak) | |
7236 | symsec = h->root.u.def.section; | |
7237 | *symsecp = symsec; | |
7238 | } | |
7239 | ||
e7b938ca | 7240 | if (tls_maskp != NULL) |
411e1bfb AM |
7241 | { |
7242 | struct ppc_link_hash_entry *eh; | |
7243 | ||
7244 | eh = (struct ppc_link_hash_entry *) h; | |
e7b938ca | 7245 | *tls_maskp = &eh->tls_mask; |
411e1bfb AM |
7246 | } |
7247 | } | |
7248 | else | |
7249 | { | |
7250 | Elf_Internal_Sym *sym; | |
7251 | Elf_Internal_Sym *locsyms = *locsymsp; | |
7252 | ||
7253 | if (locsyms == NULL) | |
7254 | { | |
7255 | locsyms = (Elf_Internal_Sym *) symtab_hdr->contents; | |
7256 | if (locsyms == NULL) | |
7257 | locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr, | |
7258 | symtab_hdr->sh_info, | |
7259 | 0, NULL, NULL, NULL); | |
7260 | if (locsyms == NULL) | |
7261 | return FALSE; | |
7262 | *locsymsp = locsyms; | |
7263 | } | |
7264 | sym = locsyms + r_symndx; | |
7265 | ||
7266 | if (hp != NULL) | |
7267 | *hp = NULL; | |
7268 | ||
7269 | if (symp != NULL) | |
7270 | *symp = sym; | |
7271 | ||
7272 | if (symsecp != NULL) | |
cb33740c | 7273 | *symsecp = bfd_section_from_elf_index (ibfd, sym->st_shndx); |
411e1bfb | 7274 | |
e7b938ca | 7275 | if (tls_maskp != NULL) |
411e1bfb AM |
7276 | { |
7277 | struct got_entry **lgot_ents; | |
f961d9dd | 7278 | unsigned char *tls_mask; |
411e1bfb | 7279 | |
e7b938ca | 7280 | tls_mask = NULL; |
411e1bfb AM |
7281 | lgot_ents = elf_local_got_ents (ibfd); |
7282 | if (lgot_ents != NULL) | |
7283 | { | |
e054468f AM |
7284 | struct plt_entry **local_plt = (struct plt_entry **) |
7285 | (lgot_ents + symtab_hdr->sh_info); | |
f961d9dd | 7286 | unsigned char *lgot_masks = (unsigned char *) |
e054468f | 7287 | (local_plt + symtab_hdr->sh_info); |
e7b938ca | 7288 | tls_mask = &lgot_masks[r_symndx]; |
411e1bfb | 7289 | } |
e7b938ca | 7290 | *tls_maskp = tls_mask; |
411e1bfb AM |
7291 | } |
7292 | } | |
7293 | return TRUE; | |
7294 | } | |
7295 | ||
e7b938ca | 7296 | /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on |
951fd09b | 7297 | error, 2 on a toc GD type suitable for optimization, 3 on a toc LD |
ad8e1ba5 | 7298 | type suitable for optimization, and 1 otherwise. */ |
951fd09b AM |
7299 | |
7300 | static int | |
f961d9dd | 7301 | get_tls_mask (unsigned char **tls_maskp, |
3a71aa26 AM |
7302 | unsigned long *toc_symndx, |
7303 | bfd_vma *toc_addend, | |
0d4792f7 | 7304 | Elf_Internal_Sym **locsymsp, |
3a71aa26 AM |
7305 | const Elf_Internal_Rela *rel, |
7306 | bfd *ibfd) | |
411e1bfb AM |
7307 | { |
7308 | unsigned long r_symndx; | |
0d4792f7 | 7309 | int next_r; |
411e1bfb AM |
7310 | struct elf_link_hash_entry *h; |
7311 | Elf_Internal_Sym *sym; | |
7312 | asection *sec; | |
7313 | bfd_vma off; | |
7314 | ||
7315 | r_symndx = ELF64_R_SYM (rel->r_info); | |
e7b938ca | 7316 | if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd)) |
951fd09b | 7317 | return 0; |
411e1bfb | 7318 | |
e7b938ca | 7319 | if ((*tls_maskp != NULL && **tls_maskp != 0) |
411e1bfb | 7320 | || sec == NULL |
6bee8834 | 7321 | || ppc64_elf_section_data (sec) == NULL |
7c8fe5c4 | 7322 | || ppc64_elf_section_data (sec)->sec_type != sec_toc) |
951fd09b | 7323 | return 1; |
411e1bfb AM |
7324 | |
7325 | /* Look inside a TOC section too. */ | |
7326 | if (h != NULL) | |
7327 | { | |
7328 | BFD_ASSERT (h->root.type == bfd_link_hash_defined); | |
7329 | off = h->root.u.def.value; | |
7330 | } | |
7331 | else | |
7332 | off = sym->st_value; | |
7333 | off += rel->r_addend; | |
7334 | BFD_ASSERT (off % 8 == 0); | |
3a71aa26 AM |
7335 | r_symndx = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8]; |
7336 | next_r = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8 + 1]; | |
0d4792f7 AM |
7337 | if (toc_symndx != NULL) |
7338 | *toc_symndx = r_symndx; | |
3a71aa26 AM |
7339 | if (toc_addend != NULL) |
7340 | *toc_addend = ppc64_elf_section_data (sec)->u.toc.add[off / 8]; | |
7341 | if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd)) | |
7342 | return 0; | |
854b41e7 | 7343 | if ((h == NULL || is_static_defined (h)) |
0d4792f7 AM |
7344 | && (next_r == -1 || next_r == -2)) |
7345 | return 1 - next_r; | |
951fd09b | 7346 | return 1; |
411e1bfb AM |
7347 | } |
7348 | ||
3b421ab3 AM |
7349 | /* Find (or create) an entry in the tocsave hash table. */ |
7350 | ||
7351 | static struct tocsave_entry * | |
7352 | tocsave_find (struct ppc_link_hash_table *htab, | |
7353 | enum insert_option insert, | |
7354 | Elf_Internal_Sym **local_syms, | |
7355 | const Elf_Internal_Rela *irela, | |
7356 | bfd *ibfd) | |
7357 | { | |
7358 | unsigned long r_indx; | |
7359 | struct elf_link_hash_entry *h; | |
7360 | Elf_Internal_Sym *sym; | |
7361 | struct tocsave_entry ent, *p; | |
7362 | hashval_t hash; | |
7363 | struct tocsave_entry **slot; | |
7364 | ||
7365 | r_indx = ELF64_R_SYM (irela->r_info); | |
7366 | if (!get_sym_h (&h, &sym, &ent.sec, NULL, local_syms, r_indx, ibfd)) | |
7367 | return NULL; | |
7368 | if (ent.sec == NULL || ent.sec->output_section == NULL) | |
7369 | { | |
7370 | (*_bfd_error_handler) | |
7371 | (_("%B: undefined symbol on R_PPC64_TOCSAVE relocation")); | |
7372 | return NULL; | |
7373 | } | |
7374 | ||
7375 | if (h != NULL) | |
7376 | ent.offset = h->root.u.def.value; | |
7377 | else | |
7378 | ent.offset = sym->st_value; | |
7379 | ent.offset += irela->r_addend; | |
7380 | ||
7381 | hash = tocsave_htab_hash (&ent); | |
7382 | slot = ((struct tocsave_entry **) | |
7383 | htab_find_slot_with_hash (htab->tocsave_htab, &ent, hash, insert)); | |
7384 | if (slot == NULL) | |
7385 | return NULL; | |
7386 | ||
7387 | if (*slot == NULL) | |
7388 | { | |
7389 | p = (struct tocsave_entry *) bfd_alloc (ibfd, sizeof (*p)); | |
7390 | if (p == NULL) | |
7391 | return NULL; | |
7392 | *p = ent; | |
7393 | *slot = p; | |
7394 | } | |
7395 | return *slot; | |
7396 | } | |
7397 | ||
754021d0 | 7398 | /* Adjust all global syms defined in opd sections. In gcc generated |
8387904d | 7399 | code for the old ABI, these will already have been done. */ |
754021d0 AM |
7400 | |
7401 | static bfd_boolean | |
7402 | adjust_opd_syms (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED) | |
7403 | { | |
7404 | struct ppc_link_hash_entry *eh; | |
7405 | asection *sym_sec; | |
74f0fb50 | 7406 | struct _opd_sec_data *opd; |
754021d0 AM |
7407 | |
7408 | if (h->root.type == bfd_link_hash_indirect) | |
7409 | return TRUE; | |
7410 | ||
754021d0 AM |
7411 | if (h->root.type != bfd_link_hash_defined |
7412 | && h->root.type != bfd_link_hash_defweak) | |
7413 | return TRUE; | |
7414 | ||
7415 | eh = (struct ppc_link_hash_entry *) h; | |
7416 | if (eh->adjust_done) | |
7417 | return TRUE; | |
7418 | ||
7419 | sym_sec = eh->elf.root.u.def.section; | |
74f0fb50 AM |
7420 | opd = get_opd_info (sym_sec); |
7421 | if (opd != NULL && opd->adjust != NULL) | |
754021d0 | 7422 | { |
51aecdc5 | 7423 | long adjust = opd->adjust[OPD_NDX (eh->elf.root.u.def.value)]; |
4025353c AM |
7424 | if (adjust == -1) |
7425 | { | |
7426 | /* This entry has been deleted. */ | |
b3fac117 | 7427 | asection *dsec = ppc64_elf_tdata (sym_sec->owner)->deleted_section; |
81688140 AM |
7428 | if (dsec == NULL) |
7429 | { | |
7430 | for (dsec = sym_sec->owner->sections; dsec; dsec = dsec->next) | |
dbaa2011 | 7431 | if (discarded_section (dsec)) |
81688140 | 7432 | { |
b3fac117 | 7433 | ppc64_elf_tdata (sym_sec->owner)->deleted_section = dsec; |
81688140 AM |
7434 | break; |
7435 | } | |
7436 | } | |
4025353c | 7437 | eh->elf.root.u.def.value = 0; |
81688140 | 7438 | eh->elf.root.u.def.section = dsec; |
4025353c AM |
7439 | } |
7440 | else | |
7441 | eh->elf.root.u.def.value += adjust; | |
754021d0 AM |
7442 | eh->adjust_done = 1; |
7443 | } | |
7444 | return TRUE; | |
7445 | } | |
7446 | ||
8c1d1bb8 | 7447 | /* Handles decrementing dynamic reloc counts for the reloc specified by |
19e08130 | 7448 | R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM |
8c1d1bb8 AM |
7449 | have already been determined. */ |
7450 | ||
7451 | static bfd_boolean | |
7452 | dec_dynrel_count (bfd_vma r_info, | |
7453 | asection *sec, | |
7454 | struct bfd_link_info *info, | |
7455 | Elf_Internal_Sym **local_syms, | |
7456 | struct elf_link_hash_entry *h, | |
19e08130 | 7457 | Elf_Internal_Sym *sym) |
8c1d1bb8 AM |
7458 | { |
7459 | enum elf_ppc64_reloc_type r_type; | |
19e08130 | 7460 | asection *sym_sec = NULL; |
8c1d1bb8 AM |
7461 | |
7462 | /* Can this reloc be dynamic? This switch, and later tests here | |
7463 | should be kept in sync with the code in check_relocs. */ | |
7464 | r_type = ELF64_R_TYPE (r_info); | |
7465 | switch (r_type) | |
7466 | { | |
7467 | default: | |
7468 | return TRUE; | |
7469 | ||
7470 | case R_PPC64_TPREL16: | |
7471 | case R_PPC64_TPREL16_LO: | |
7472 | case R_PPC64_TPREL16_HI: | |
7473 | case R_PPC64_TPREL16_HA: | |
7474 | case R_PPC64_TPREL16_DS: | |
7475 | case R_PPC64_TPREL16_LO_DS: | |
f9c6b907 AM |
7476 | case R_PPC64_TPREL16_HIGH: |
7477 | case R_PPC64_TPREL16_HIGHA: | |
8c1d1bb8 AM |
7478 | case R_PPC64_TPREL16_HIGHER: |
7479 | case R_PPC64_TPREL16_HIGHERA: | |
7480 | case R_PPC64_TPREL16_HIGHEST: | |
7481 | case R_PPC64_TPREL16_HIGHESTA: | |
7482 | if (!info->shared) | |
7483 | return TRUE; | |
7484 | ||
7485 | case R_PPC64_TPREL64: | |
7486 | case R_PPC64_DTPMOD64: | |
7487 | case R_PPC64_DTPREL64: | |
7488 | case R_PPC64_ADDR64: | |
7489 | case R_PPC64_REL30: | |
7490 | case R_PPC64_REL32: | |
7491 | case R_PPC64_REL64: | |
7492 | case R_PPC64_ADDR14: | |
7493 | case R_PPC64_ADDR14_BRNTAKEN: | |
7494 | case R_PPC64_ADDR14_BRTAKEN: | |
7495 | case R_PPC64_ADDR16: | |
7496 | case R_PPC64_ADDR16_DS: | |
7497 | case R_PPC64_ADDR16_HA: | |
7498 | case R_PPC64_ADDR16_HI: | |
f9c6b907 AM |
7499 | case R_PPC64_ADDR16_HIGH: |
7500 | case R_PPC64_ADDR16_HIGHA: | |
8c1d1bb8 AM |
7501 | case R_PPC64_ADDR16_HIGHER: |
7502 | case R_PPC64_ADDR16_HIGHERA: | |
7503 | case R_PPC64_ADDR16_HIGHEST: | |
7504 | case R_PPC64_ADDR16_HIGHESTA: | |
7505 | case R_PPC64_ADDR16_LO: | |
7506 | case R_PPC64_ADDR16_LO_DS: | |
7507 | case R_PPC64_ADDR24: | |
7508 | case R_PPC64_ADDR32: | |
7509 | case R_PPC64_UADDR16: | |
7510 | case R_PPC64_UADDR32: | |
7511 | case R_PPC64_UADDR64: | |
7512 | case R_PPC64_TOC: | |
7513 | break; | |
7514 | } | |
7515 | ||
7516 | if (local_syms != NULL) | |
7517 | { | |
7518 | unsigned long r_symndx; | |
8c1d1bb8 AM |
7519 | bfd *ibfd = sec->owner; |
7520 | ||
7521 | r_symndx = ELF64_R_SYM (r_info); | |
7522 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, local_syms, r_symndx, ibfd)) | |
7523 | return FALSE; | |
7524 | } | |
7525 | ||
7526 | if ((info->shared | |
1d483afe | 7527 | && (must_be_dyn_reloc (info, r_type) |
8c1d1bb8 | 7528 | || (h != NULL |
198f1157 | 7529 | && (!SYMBOLIC_BIND (info, h) |
8c1d1bb8 AM |
7530 | || h->root.type == bfd_link_hash_defweak |
7531 | || !h->def_regular)))) | |
7532 | || (ELIMINATE_COPY_RELOCS | |
7533 | && !info->shared | |
7534 | && h != NULL | |
7535 | && (h->root.type == bfd_link_hash_defweak | |
7536 | || !h->def_regular))) | |
7537 | ; | |
7538 | else | |
7539 | return TRUE; | |
7540 | ||
7541 | if (h != NULL) | |
6edfbbad | 7542 | { |
19e08130 AM |
7543 | struct elf_dyn_relocs *p; |
7544 | struct elf_dyn_relocs **pp; | |
7545 | pp = &((struct ppc_link_hash_entry *) h)->dyn_relocs; | |
7546 | ||
7547 | /* elf_gc_sweep may have already removed all dyn relocs associated | |
7548 | with local syms for a given section. Also, symbol flags are | |
7549 | changed by elf_gc_sweep_symbol, confusing the test above. Don't | |
7550 | report a dynreloc miscount. */ | |
7551 | if (*pp == NULL && info->gc_sections) | |
7552 | return TRUE; | |
7553 | ||
7554 | while ((p = *pp) != NULL) | |
60124e18 | 7555 | { |
19e08130 AM |
7556 | if (p->sec == sec) |
7557 | { | |
7558 | if (!must_be_dyn_reloc (info, r_type)) | |
7559 | p->pc_count -= 1; | |
7560 | p->count -= 1; | |
7561 | if (p->count == 0) | |
7562 | *pp = p->next; | |
7563 | return TRUE; | |
7564 | } | |
7565 | pp = &p->next; | |
60124e18 | 7566 | } |
6edfbbad | 7567 | } |
19e08130 AM |
7568 | else |
7569 | { | |
7570 | struct ppc_dyn_relocs *p; | |
7571 | struct ppc_dyn_relocs **pp; | |
7572 | void *vpp; | |
7573 | bfd_boolean is_ifunc; | |
8c1d1bb8 | 7574 | |
19e08130 AM |
7575 | if (local_syms == NULL) |
7576 | sym_sec = bfd_section_from_elf_index (sec->owner, sym->st_shndx); | |
7577 | if (sym_sec == NULL) | |
7578 | sym_sec = sec; | |
c57da1a7 | 7579 | |
19e08130 AM |
7580 | vpp = &elf_section_data (sym_sec)->local_dynrel; |
7581 | pp = (struct ppc_dyn_relocs **) vpp; | |
7582 | ||
7583 | if (*pp == NULL && info->gc_sections) | |
7584 | return TRUE; | |
7585 | ||
7586 | is_ifunc = ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC; | |
7587 | while ((p = *pp) != NULL) | |
8c1d1bb8 | 7588 | { |
19e08130 AM |
7589 | if (p->sec == sec && p->ifunc == is_ifunc) |
7590 | { | |
7591 | p->count -= 1; | |
7592 | if (p->count == 0) | |
7593 | *pp = p->next; | |
7594 | return TRUE; | |
7595 | } | |
7596 | pp = &p->next; | |
8c1d1bb8 | 7597 | } |
8c1d1bb8 AM |
7598 | } |
7599 | ||
8de848d8 | 7600 | info->callbacks->einfo (_("%P: dynreloc miscount for %B, section %A\n"), |
25f53a85 | 7601 | sec->owner, sec); |
8c1d1bb8 AM |
7602 | bfd_set_error (bfd_error_bad_value); |
7603 | return FALSE; | |
7604 | } | |
7605 | ||
754021d0 AM |
7606 | /* Remove unused Official Procedure Descriptor entries. Currently we |
7607 | only remove those associated with functions in discarded link-once | |
7608 | sections, or weakly defined functions that have been overridden. It | |
7609 | would be possible to remove many more entries for statically linked | |
7610 | applications. */ | |
7611 | ||
b34976b6 | 7612 | bfd_boolean |
e7d1c40c | 7613 | ppc64_elf_edit_opd (struct bfd_link_info *info) |
1e2f5b6e AM |
7614 | { |
7615 | bfd *ibfd; | |
754021d0 | 7616 | bfd_boolean some_edited = FALSE; |
3f764659 | 7617 | asection *need_pad = NULL; |
e7d1c40c AM |
7618 | struct ppc_link_hash_table *htab; |
7619 | ||
7620 | htab = ppc_hash_table (info); | |
7621 | if (htab == NULL) | |
7622 | return FALSE; | |
1e2f5b6e | 7623 | |
c72f2fb2 | 7624 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
1e2f5b6e AM |
7625 | { |
7626 | asection *sec; | |
7627 | Elf_Internal_Rela *relstart, *rel, *relend; | |
7628 | Elf_Internal_Shdr *symtab_hdr; | |
6cdc0ccc | 7629 | Elf_Internal_Sym *local_syms; |
74f0fb50 | 7630 | struct _opd_sec_data *opd; |
51aecdc5 | 7631 | bfd_boolean need_edit, add_aux_fields, broken; |
3f764659 | 7632 | bfd_size_type cnt_16b = 0; |
1e2f5b6e | 7633 | |
854b41e7 AM |
7634 | if (!is_ppc64_elf (ibfd)) |
7635 | continue; | |
7636 | ||
1e2f5b6e | 7637 | sec = bfd_get_section_by_name (ibfd, ".opd"); |
46de2a7c | 7638 | if (sec == NULL || sec->size == 0) |
1e2f5b6e AM |
7639 | continue; |
7640 | ||
dbaa2011 | 7641 | if (sec->sec_info_type == SEC_INFO_TYPE_JUST_SYMS) |
4b85d634 AM |
7642 | continue; |
7643 | ||
1e2f5b6e AM |
7644 | if (sec->output_section == bfd_abs_section_ptr) |
7645 | continue; | |
7646 | ||
7647 | /* Look through the section relocs. */ | |
7648 | if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0) | |
7649 | continue; | |
7650 | ||
6cdc0ccc | 7651 | local_syms = NULL; |
0ffa91dd | 7652 | symtab_hdr = &elf_symtab_hdr (ibfd); |
1e2f5b6e AM |
7653 | |
7654 | /* Read the relocations. */ | |
4ce794b7 | 7655 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, |
45d6a902 | 7656 | info->keep_memory); |
1e2f5b6e | 7657 | if (relstart == NULL) |
b34976b6 | 7658 | return FALSE; |
1e2f5b6e AM |
7659 | |
7660 | /* First run through the relocs to check they are sane, and to | |
7661 | determine whether we need to edit this opd section. */ | |
b34976b6 | 7662 | need_edit = FALSE; |
51aecdc5 | 7663 | broken = FALSE; |
3f764659 | 7664 | need_pad = sec; |
1e2f5b6e | 7665 | relend = relstart + sec->reloc_count; |
50bc7936 | 7666 | for (rel = relstart; rel < relend; ) |
1e2f5b6e | 7667 | { |
04c9666a | 7668 | enum elf_ppc64_reloc_type r_type; |
1e2f5b6e AM |
7669 | unsigned long r_symndx; |
7670 | asection *sym_sec; | |
7671 | struct elf_link_hash_entry *h; | |
7672 | Elf_Internal_Sym *sym; | |
51aecdc5 | 7673 | bfd_vma offset; |
1e2f5b6e | 7674 | |
51aecdc5 | 7675 | /* .opd contains an array of 16 or 24 byte entries. We're |
1e2f5b6e AM |
7676 | only interested in the reloc pointing to a function entry |
7677 | point. */ | |
51aecdc5 AM |
7678 | offset = rel->r_offset; |
7679 | if (rel + 1 == relend | |
7680 | || rel[1].r_offset != offset + 8) | |
1e2f5b6e AM |
7681 | { |
7682 | /* If someone messes with .opd alignment then after a | |
7683 | "ld -r" we might have padding in the middle of .opd. | |
7684 | Also, there's nothing to prevent someone putting | |
7685 | something silly in .opd with the assembler. No .opd | |
b34976b6 | 7686 | optimization for them! */ |
3f764659 | 7687 | broken_opd: |
1e2f5b6e | 7688 | (*_bfd_error_handler) |
d003868e | 7689 | (_("%B: .opd is not a regular array of opd entries"), ibfd); |
51aecdc5 | 7690 | broken = TRUE; |
1e2f5b6e AM |
7691 | break; |
7692 | } | |
7693 | ||
50bc7936 AM |
7694 | if ((r_type = ELF64_R_TYPE (rel->r_info)) != R_PPC64_ADDR64 |
7695 | || (r_type = ELF64_R_TYPE ((rel + 1)->r_info)) != R_PPC64_TOC) | |
7696 | { | |
7697 | (*_bfd_error_handler) | |
d003868e AM |
7698 | (_("%B: unexpected reloc type %u in .opd section"), |
7699 | ibfd, r_type); | |
51aecdc5 | 7700 | broken = TRUE; |
50bc7936 AM |
7701 | break; |
7702 | } | |
7703 | ||
1e2f5b6e | 7704 | r_symndx = ELF64_R_SYM (rel->r_info); |
411e1bfb AM |
7705 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, |
7706 | r_symndx, ibfd)) | |
50bc7936 | 7707 | goto error_ret; |
1e2f5b6e AM |
7708 | |
7709 | if (sym_sec == NULL || sym_sec->owner == NULL) | |
7710 | { | |
411e1bfb AM |
7711 | const char *sym_name; |
7712 | if (h != NULL) | |
7713 | sym_name = h->root.root.string; | |
7714 | else | |
26c61ae5 L |
7715 | sym_name = bfd_elf_sym_name (ibfd, symtab_hdr, sym, |
7716 | sym_sec); | |
411e1bfb | 7717 | |
1e2f5b6e | 7718 | (*_bfd_error_handler) |
d003868e AM |
7719 | (_("%B: undefined sym `%s' in .opd section"), |
7720 | ibfd, sym_name); | |
51aecdc5 | 7721 | broken = TRUE; |
1e2f5b6e AM |
7722 | break; |
7723 | } | |
7724 | ||
51020317 AM |
7725 | /* opd entries are always for functions defined in the |
7726 | current input bfd. If the symbol isn't defined in the | |
7727 | input bfd, then we won't be using the function in this | |
7728 | bfd; It must be defined in a linkonce section in another | |
7729 | bfd, or is weak. It's also possible that we are | |
7730 | discarding the function due to a linker script /DISCARD/, | |
7731 | which we test for via the output_section. */ | |
7732 | if (sym_sec->owner != ibfd | |
7733 | || sym_sec->output_section == bfd_abs_section_ptr) | |
b34976b6 | 7734 | need_edit = TRUE; |
1e2f5b6e | 7735 | |
50bc7936 | 7736 | rel += 2; |
51aecdc5 AM |
7737 | if (rel + 1 == relend |
7738 | || (rel + 2 < relend | |
7739 | && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_TOC)) | |
7740 | ++rel; | |
7741 | ||
7742 | if (rel == relend) | |
3f764659 JJ |
7743 | { |
7744 | if (sec->size == offset + 24) | |
7745 | { | |
7746 | need_pad = NULL; | |
7747 | break; | |
7748 | } | |
51aecdc5 | 7749 | if (sec->size == offset + 16) |
3f764659 JJ |
7750 | { |
7751 | cnt_16b++; | |
7752 | break; | |
7753 | } | |
7754 | goto broken_opd; | |
7755 | } | |
3f764659 JJ |
7756 | else if (rel + 1 < relend |
7757 | && ELF64_R_TYPE (rel[0].r_info) == R_PPC64_ADDR64 | |
7758 | && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOC) | |
7759 | { | |
51aecdc5 AM |
7760 | if (rel[0].r_offset == offset + 16) |
7761 | cnt_16b++; | |
7762 | else if (rel[0].r_offset != offset + 24) | |
7763 | goto broken_opd; | |
3f764659 JJ |
7764 | } |
7765 | else | |
7766 | goto broken_opd; | |
1e2f5b6e AM |
7767 | } |
7768 | ||
e7d1c40c | 7769 | add_aux_fields = htab->params->non_overlapping_opd && cnt_16b > 0; |
3f764659 | 7770 | |
51aecdc5 | 7771 | if (!broken && (need_edit || add_aux_fields)) |
1e2f5b6e AM |
7772 | { |
7773 | Elf_Internal_Rela *write_rel; | |
d4730f92 | 7774 | Elf_Internal_Shdr *rel_hdr; |
1e2f5b6e | 7775 | bfd_byte *rptr, *wptr; |
983bddc8 | 7776 | bfd_byte *new_contents; |
74f0fb50 AM |
7777 | bfd_size_type amt; |
7778 | ||
983bddc8 | 7779 | new_contents = NULL; |
51aecdc5 | 7780 | amt = OPD_NDX (sec->size) * sizeof (long); |
74f0fb50 | 7781 | opd = &ppc64_elf_section_data (sec)->u.opd; |
33c0ec9d | 7782 | opd->adjust = bfd_zalloc (sec->owner, amt); |
74f0fb50 AM |
7783 | if (opd->adjust == NULL) |
7784 | return FALSE; | |
7785 | ppc64_elf_section_data (sec)->sec_type = sec_opd; | |
1e2f5b6e AM |
7786 | |
7787 | /* This seems a waste of time as input .opd sections are all | |
7788 | zeros as generated by gcc, but I suppose there's no reason | |
7789 | this will always be so. We might start putting something in | |
7790 | the third word of .opd entries. */ | |
7791 | if ((sec->flags & SEC_IN_MEMORY) == 0) | |
7792 | { | |
eea6121a AM |
7793 | bfd_byte *loc; |
7794 | if (!bfd_malloc_and_get_section (ibfd, sec, &loc)) | |
6cdc0ccc | 7795 | { |
eea6121a AM |
7796 | if (loc != NULL) |
7797 | free (loc); | |
50bc7936 | 7798 | error_ret: |
6cdc0ccc AM |
7799 | if (local_syms != NULL |
7800 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
7801 | free (local_syms); | |
6cdc0ccc AM |
7802 | if (elf_section_data (sec)->relocs != relstart) |
7803 | free (relstart); | |
b34976b6 | 7804 | return FALSE; |
6cdc0ccc | 7805 | } |
1e2f5b6e AM |
7806 | sec->contents = loc; |
7807 | sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS); | |
7808 | } | |
7809 | ||
7810 | elf_section_data (sec)->relocs = relstart; | |
7811 | ||
3f764659 | 7812 | new_contents = sec->contents; |
3f764659 JJ |
7813 | if (add_aux_fields) |
7814 | { | |
7815 | new_contents = bfd_malloc (sec->size + cnt_16b * 8); | |
7816 | if (new_contents == NULL) | |
7817 | return FALSE; | |
51aecdc5 | 7818 | need_pad = NULL; |
3f764659 | 7819 | } |
b4f4e59f AM |
7820 | wptr = new_contents; |
7821 | rptr = sec->contents; | |
1e2f5b6e | 7822 | write_rel = relstart; |
51aecdc5 | 7823 | for (rel = relstart; rel < relend; ) |
1e2f5b6e | 7824 | { |
50bc7936 AM |
7825 | unsigned long r_symndx; |
7826 | asection *sym_sec; | |
7827 | struct elf_link_hash_entry *h; | |
51aecdc5 | 7828 | struct ppc_link_hash_entry *fdh = NULL; |
50bc7936 | 7829 | Elf_Internal_Sym *sym; |
51aecdc5 AM |
7830 | long opd_ent_size; |
7831 | Elf_Internal_Rela *next_rel; | |
7832 | bfd_boolean skip; | |
50bc7936 AM |
7833 | |
7834 | r_symndx = ELF64_R_SYM (rel->r_info); | |
7835 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
d37c89e5 | 7836 | r_symndx, ibfd)) |
50bc7936 AM |
7837 | goto error_ret; |
7838 | ||
51aecdc5 AM |
7839 | next_rel = rel + 2; |
7840 | if (next_rel + 1 == relend | |
7841 | || (next_rel + 2 < relend | |
7842 | && ELF64_R_TYPE (next_rel[2].r_info) == R_PPC64_TOC)) | |
7843 | ++next_rel; | |
7844 | ||
7845 | /* See if the .opd entry is full 24 byte or | |
7846 | 16 byte (with fd_aux entry overlapped with next | |
7847 | fd_func). */ | |
7848 | opd_ent_size = 24; | |
7849 | if (next_rel == relend) | |
1e2f5b6e | 7850 | { |
51aecdc5 | 7851 | if (sec->size == rel->r_offset + 16) |
3f764659 | 7852 | opd_ent_size = 16; |
51aecdc5 AM |
7853 | } |
7854 | else if (next_rel->r_offset == rel->r_offset + 16) | |
7855 | opd_ent_size = 16; | |
3f764659 | 7856 | |
51aecdc5 AM |
7857 | if (h != NULL |
7858 | && h->root.root.string[0] == '.') | |
7859 | { | |
7860 | fdh = lookup_fdh ((struct ppc_link_hash_entry *) h, htab); | |
7861 | if (fdh != NULL | |
7862 | && fdh->elf.root.type != bfd_link_hash_defined | |
7863 | && fdh->elf.root.type != bfd_link_hash_defweak) | |
7864 | fdh = NULL; | |
7865 | } | |
1e2f5b6e | 7866 | |
51aecdc5 AM |
7867 | skip = (sym_sec->owner != ibfd |
7868 | || sym_sec->output_section == bfd_abs_section_ptr); | |
7869 | if (skip) | |
7870 | { | |
7871 | if (fdh != NULL && sym_sec->owner == ibfd) | |
a4aa0fb7 | 7872 | { |
51aecdc5 AM |
7873 | /* Arrange for the function descriptor sym |
7874 | to be dropped. */ | |
7875 | fdh->elf.root.u.def.value = 0; | |
7876 | fdh->elf.root.u.def.section = sym_sec; | |
a4aa0fb7 | 7877 | } |
51aecdc5 | 7878 | opd->adjust[OPD_NDX (rel->r_offset)] = -1; |
1e2f5b6e | 7879 | |
51aecdc5 AM |
7880 | if (NO_OPD_RELOCS || info->relocatable) |
7881 | rel = next_rel; | |
7882 | else | |
7883 | while (1) | |
7884 | { | |
7885 | if (!dec_dynrel_count (rel->r_info, sec, info, | |
7886 | NULL, h, sym)) | |
7887 | goto error_ret; | |
754021d0 | 7888 | |
51aecdc5 AM |
7889 | if (++rel == next_rel) |
7890 | break; | |
1e2f5b6e | 7891 | |
51aecdc5 AM |
7892 | r_symndx = ELF64_R_SYM (rel->r_info); |
7893 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
7894 | r_symndx, ibfd)) | |
7895 | goto error_ret; | |
7896 | } | |
50bc7936 AM |
7897 | } |
7898 | else | |
1e2f5b6e | 7899 | { |
51aecdc5 AM |
7900 | /* We'll be keeping this opd entry. */ |
7901 | long adjust; | |
7902 | ||
7903 | if (fdh != NULL) | |
7904 | { | |
7905 | /* Redefine the function descriptor symbol to | |
7906 | this location in the opd section. It is | |
7907 | necessary to update the value here rather | |
7908 | than using an array of adjustments as we do | |
7909 | for local symbols, because various places | |
7910 | in the generic ELF code use the value | |
7911 | stored in u.def.value. */ | |
7912 | fdh->elf.root.u.def.value = wptr - new_contents; | |
7913 | fdh->adjust_done = 1; | |
7914 | } | |
7915 | ||
7916 | /* Local syms are a bit tricky. We could | |
7917 | tweak them as they can be cached, but | |
7918 | we'd need to look through the local syms | |
7919 | for the function descriptor sym which we | |
7920 | don't have at the moment. So keep an | |
7921 | array of adjustments. */ | |
7922 | adjust = (wptr - new_contents) - (rptr - sec->contents); | |
7923 | opd->adjust[OPD_NDX (rel->r_offset)] = adjust; | |
7924 | ||
7925 | if (wptr != rptr) | |
7926 | memcpy (wptr, rptr, opd_ent_size); | |
7927 | wptr += opd_ent_size; | |
7928 | if (add_aux_fields && opd_ent_size == 16) | |
7929 | { | |
7930 | memset (wptr, '\0', 8); | |
7931 | wptr += 8; | |
7932 | } | |
7933 | ||
50bc7936 | 7934 | /* We need to adjust any reloc offsets to point to the |
51aecdc5 AM |
7935 | new opd entries. */ |
7936 | for ( ; rel != next_rel; ++rel) | |
7937 | { | |
7938 | rel->r_offset += adjust; | |
7939 | if (write_rel != rel) | |
7940 | memcpy (write_rel, rel, sizeof (*rel)); | |
7941 | ++write_rel; | |
7942 | } | |
1e2f5b6e | 7943 | } |
51aecdc5 AM |
7944 | |
7945 | rptr += opd_ent_size; | |
1e2f5b6e AM |
7946 | } |
7947 | ||
3f764659 | 7948 | sec->size = wptr - new_contents; |
1e2f5b6e | 7949 | sec->reloc_count = write_rel - relstart; |
3f764659 JJ |
7950 | if (add_aux_fields) |
7951 | { | |
7952 | free (sec->contents); | |
7953 | sec->contents = new_contents; | |
7954 | } | |
7955 | ||
05bf9422 | 7956 | /* Fudge the header size too, as this is used later in |
cdcf6e38 | 7957 | elf_bfd_final_link if we are emitting relocs. */ |
d4730f92 BS |
7958 | rel_hdr = _bfd_elf_single_rel_hdr (sec); |
7959 | rel_hdr->sh_size = sec->reloc_count * rel_hdr->sh_entsize; | |
754021d0 | 7960 | some_edited = TRUE; |
1e2f5b6e | 7961 | } |
6cdc0ccc | 7962 | else if (elf_section_data (sec)->relocs != relstart) |
1e2f5b6e | 7963 | free (relstart); |
6cdc0ccc | 7964 | |
411e1bfb AM |
7965 | if (local_syms != NULL |
7966 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
7967 | { | |
7968 | if (!info->keep_memory) | |
7969 | free (local_syms); | |
7970 | else | |
7971 | symtab_hdr->contents = (unsigned char *) local_syms; | |
7972 | } | |
7973 | } | |
7974 | ||
754021d0 AM |
7975 | if (some_edited) |
7976 | elf_link_hash_traverse (elf_hash_table (info), adjust_opd_syms, NULL); | |
7977 | ||
3f764659 JJ |
7978 | /* If we are doing a final link and the last .opd entry is just 16 byte |
7979 | long, add a 8 byte padding after it. */ | |
7980 | if (need_pad != NULL && !info->relocatable) | |
7981 | { | |
7982 | bfd_byte *p; | |
7983 | ||
7984 | if ((need_pad->flags & SEC_IN_MEMORY) == 0) | |
7985 | { | |
7986 | BFD_ASSERT (need_pad->size > 0); | |
7987 | ||
7988 | p = bfd_malloc (need_pad->size + 8); | |
7989 | if (p == NULL) | |
7990 | return FALSE; | |
699733f6 | 7991 | |
3f764659 JJ |
7992 | if (! bfd_get_section_contents (need_pad->owner, need_pad, |
7993 | p, 0, need_pad->size)) | |
7994 | return FALSE; | |
7995 | ||
7996 | need_pad->contents = p; | |
7997 | need_pad->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS); | |
7998 | } | |
7999 | else | |
8000 | { | |
8001 | p = bfd_realloc (need_pad->contents, need_pad->size + 8); | |
8002 | if (p == NULL) | |
8003 | return FALSE; | |
8004 | ||
8005 | need_pad->contents = p; | |
8006 | } | |
8007 | ||
8008 | memset (need_pad->contents + need_pad->size, 0, 8); | |
8009 | need_pad->size += 8; | |
8010 | } | |
8011 | ||
411e1bfb AM |
8012 | return TRUE; |
8013 | } | |
8014 | ||
e1918d23 | 8015 | /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */ |
411e1bfb | 8016 | |
e1918d23 | 8017 | asection * |
e7d1c40c | 8018 | ppc64_elf_tls_setup (struct bfd_link_info *info) |
411e1bfb | 8019 | { |
411e1bfb AM |
8020 | struct ppc_link_hash_table *htab; |
8021 | ||
411e1bfb | 8022 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
8023 | if (htab == NULL) |
8024 | return NULL; | |
8025 | ||
ee67d69a AM |
8026 | if (abiversion (info->output_bfd) == 1) |
8027 | htab->opd_abi = 1; | |
8028 | ||
e7d1c40c | 8029 | if (htab->params->no_multi_toc) |
33c0ec9d AM |
8030 | htab->do_multi_toc = 0; |
8031 | else if (!htab->do_multi_toc) | |
e7d1c40c | 8032 | htab->params->no_multi_toc = 1; |
33c0ec9d | 8033 | |
3a71aa26 AM |
8034 | htab->tls_get_addr = ((struct ppc_link_hash_entry *) |
8035 | elf_link_hash_lookup (&htab->elf, ".__tls_get_addr", | |
8036 | FALSE, FALSE, TRUE)); | |
a7f2871e AM |
8037 | /* Move dynamic linking info to the function descriptor sym. */ |
8038 | if (htab->tls_get_addr != NULL) | |
8039 | func_desc_adjust (&htab->tls_get_addr->elf, info); | |
3a71aa26 AM |
8040 | htab->tls_get_addr_fd = ((struct ppc_link_hash_entry *) |
8041 | elf_link_hash_lookup (&htab->elf, "__tls_get_addr", | |
8042 | FALSE, FALSE, TRUE)); | |
e7d1c40c | 8043 | if (!htab->params->no_tls_get_addr_opt) |
a7f2871e AM |
8044 | { |
8045 | struct elf_link_hash_entry *opt, *opt_fd, *tga, *tga_fd; | |
8046 | ||
8047 | opt = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr_opt", | |
8048 | FALSE, FALSE, TRUE); | |
8049 | if (opt != NULL) | |
8050 | func_desc_adjust (opt, info); | |
8051 | opt_fd = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt", | |
8052 | FALSE, FALSE, TRUE); | |
8053 | if (opt_fd != NULL | |
8054 | && (opt_fd->root.type == bfd_link_hash_defined | |
8055 | || opt_fd->root.type == bfd_link_hash_defweak)) | |
8056 | { | |
8057 | /* If glibc supports an optimized __tls_get_addr call stub, | |
8058 | signalled by the presence of __tls_get_addr_opt, and we'll | |
8059 | be calling __tls_get_addr via a plt call stub, then | |
8060 | make __tls_get_addr point to __tls_get_addr_opt. */ | |
8061 | tga_fd = &htab->tls_get_addr_fd->elf; | |
8062 | if (htab->elf.dynamic_sections_created | |
8063 | && tga_fd != NULL | |
8064 | && (tga_fd->type == STT_FUNC | |
8065 | || tga_fd->needs_plt) | |
8066 | && !(SYMBOL_CALLS_LOCAL (info, tga_fd) | |
8067 | || (ELF_ST_VISIBILITY (tga_fd->other) != STV_DEFAULT | |
8068 | && tga_fd->root.type == bfd_link_hash_undefweak))) | |
8069 | { | |
8070 | struct plt_entry *ent; | |
8071 | ||
8072 | for (ent = tga_fd->plt.plist; ent != NULL; ent = ent->next) | |
8073 | if (ent->plt.refcount > 0) | |
8074 | break; | |
8075 | if (ent != NULL) | |
8076 | { | |
8077 | tga_fd->root.type = bfd_link_hash_indirect; | |
8078 | tga_fd->root.u.i.link = &opt_fd->root; | |
8079 | ppc64_elf_copy_indirect_symbol (info, opt_fd, tga_fd); | |
8080 | if (opt_fd->dynindx != -1) | |
8081 | { | |
8082 | /* Use __tls_get_addr_opt in dynamic relocations. */ | |
8083 | opt_fd->dynindx = -1; | |
8084 | _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr, | |
8085 | opt_fd->dynstr_index); | |
8086 | if (!bfd_elf_link_record_dynamic_symbol (info, opt_fd)) | |
854b41e7 | 8087 | return NULL; |
a7f2871e AM |
8088 | } |
8089 | htab->tls_get_addr_fd = (struct ppc_link_hash_entry *) opt_fd; | |
8090 | tga = &htab->tls_get_addr->elf; | |
8091 | if (opt != NULL && tga != NULL) | |
8092 | { | |
8093 | tga->root.type = bfd_link_hash_indirect; | |
8094 | tga->root.u.i.link = &opt->root; | |
8095 | ppc64_elf_copy_indirect_symbol (info, opt, tga); | |
8096 | _bfd_elf_link_hash_hide_symbol (info, opt, | |
8097 | tga->forced_local); | |
8098 | htab->tls_get_addr = (struct ppc_link_hash_entry *) opt; | |
8099 | } | |
8100 | htab->tls_get_addr_fd->oh = htab->tls_get_addr; | |
8101 | htab->tls_get_addr_fd->is_func_descriptor = 1; | |
8102 | if (htab->tls_get_addr != NULL) | |
8103 | { | |
8104 | htab->tls_get_addr->oh = htab->tls_get_addr_fd; | |
8105 | htab->tls_get_addr->is_func = 1; | |
8106 | } | |
8107 | } | |
8108 | } | |
8109 | } | |
8110 | else | |
e7d1c40c | 8111 | htab->params->no_tls_get_addr_opt = TRUE; |
a7f2871e | 8112 | } |
33c0ec9d | 8113 | return _bfd_elf_tls_setup (info->output_bfd, info); |
3a71aa26 | 8114 | } |
8387904d | 8115 | |
3a71aa26 AM |
8116 | /* Return TRUE iff REL is a branch reloc with a global symbol matching |
8117 | HASH1 or HASH2. */ | |
8387904d | 8118 | |
3a71aa26 AM |
8119 | static bfd_boolean |
8120 | branch_reloc_hash_match (const bfd *ibfd, | |
8121 | const Elf_Internal_Rela *rel, | |
8122 | const struct ppc_link_hash_entry *hash1, | |
8123 | const struct ppc_link_hash_entry *hash2) | |
8124 | { | |
8125 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd); | |
8126 | enum elf_ppc64_reloc_type r_type = ELF64_R_TYPE (rel->r_info); | |
8127 | unsigned int r_symndx = ELF64_R_SYM (rel->r_info); | |
8128 | ||
e054468f | 8129 | if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type)) |
8387904d | 8130 | { |
3a71aa26 AM |
8131 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd); |
8132 | struct elf_link_hash_entry *h; | |
8387904d | 8133 | |
3a71aa26 | 8134 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; |
b31867b6 | 8135 | h = elf_follow_link (h); |
3a71aa26 AM |
8136 | if (h == &hash1->elf || h == &hash2->elf) |
8137 | return TRUE; | |
a48ebf4d | 8138 | } |
3a71aa26 | 8139 | return FALSE; |
951fd09b | 8140 | } |
411e1bfb | 8141 | |
951fd09b AM |
8142 | /* Run through all the TLS relocs looking for optimization |
8143 | opportunities. The linker has been hacked (see ppc64elf.em) to do | |
8144 | a preliminary section layout so that we know the TLS segment | |
8145 | offsets. We can't optimize earlier because some optimizations need | |
8146 | to know the tp offset, and we need to optimize before allocating | |
8147 | dynamic relocations. */ | |
8148 | ||
8149 | bfd_boolean | |
33c0ec9d | 8150 | ppc64_elf_tls_optimize (struct bfd_link_info *info) |
951fd09b AM |
8151 | { |
8152 | bfd *ibfd; | |
8153 | asection *sec; | |
8154 | struct ppc_link_hash_table *htab; | |
663a1470 | 8155 | unsigned char *toc_ref; |
102890f0 | 8156 | int pass; |
951fd09b | 8157 | |
1d483afe | 8158 | if (info->relocatable || !info->executable) |
411e1bfb AM |
8159 | return TRUE; |
8160 | ||
951fd09b | 8161 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
8162 | if (htab == NULL) |
8163 | return FALSE; | |
8164 | ||
663a1470 AM |
8165 | /* Make two passes over the relocs. On the first pass, mark toc |
8166 | entries involved with tls relocs, and check that tls relocs | |
8167 | involved in setting up a tls_get_addr call are indeed followed by | |
8168 | such a call. If they are not, we can't do any tls optimization. | |
8169 | On the second pass twiddle tls_mask flags to notify | |
8170 | relocate_section that optimization can be done, and adjust got | |
8171 | and plt refcounts. */ | |
8172 | toc_ref = NULL; | |
8173 | for (pass = 0; pass < 2; ++pass) | |
c72f2fb2 | 8174 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
663a1470 AM |
8175 | { |
8176 | Elf_Internal_Sym *locsyms = NULL; | |
8177 | asection *toc = bfd_get_section_by_name (ibfd, ".toc"); | |
8178 | ||
102890f0 AM |
8179 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) |
8180 | if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section)) | |
8181 | { | |
8182 | Elf_Internal_Rela *relstart, *rel, *relend; | |
663a1470 | 8183 | bfd_boolean found_tls_get_addr_arg = 0; |
411e1bfb | 8184 | |
102890f0 AM |
8185 | /* Read the relocations. */ |
8186 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, | |
8187 | info->keep_memory); | |
8188 | if (relstart == NULL) | |
2915c55b JK |
8189 | { |
8190 | free (toc_ref); | |
8191 | return FALSE; | |
8192 | } | |
411e1bfb | 8193 | |
102890f0 AM |
8194 | relend = relstart + sec->reloc_count; |
8195 | for (rel = relstart; rel < relend; rel++) | |
8196 | { | |
8197 | enum elf_ppc64_reloc_type r_type; | |
8198 | unsigned long r_symndx; | |
8199 | struct elf_link_hash_entry *h; | |
8200 | Elf_Internal_Sym *sym; | |
8201 | asection *sym_sec; | |
f961d9dd AM |
8202 | unsigned char *tls_mask; |
8203 | unsigned char tls_set, tls_clear, tls_type = 0; | |
102890f0 AM |
8204 | bfd_vma value; |
8205 | bfd_boolean ok_tprel, is_local; | |
8206 | long toc_ref_index = 0; | |
8207 | int expecting_tls_get_addr = 0; | |
663a1470 | 8208 | bfd_boolean ret = FALSE; |
411e1bfb | 8209 | |
102890f0 AM |
8210 | r_symndx = ELF64_R_SYM (rel->r_info); |
8211 | if (!get_sym_h (&h, &sym, &sym_sec, &tls_mask, &locsyms, | |
8212 | r_symndx, ibfd)) | |
8213 | { | |
8214 | err_free_rel: | |
8215 | if (elf_section_data (sec)->relocs != relstart) | |
8216 | free (relstart); | |
8217 | if (toc_ref != NULL) | |
8218 | free (toc_ref); | |
8219 | if (locsyms != NULL | |
0ffa91dd | 8220 | && (elf_symtab_hdr (ibfd).contents |
102890f0 AM |
8221 | != (unsigned char *) locsyms)) |
8222 | free (locsyms); | |
663a1470 | 8223 | return ret; |
102890f0 | 8224 | } |
411e1bfb | 8225 | |
102890f0 AM |
8226 | if (h != NULL) |
8227 | { | |
766bc656 AM |
8228 | if (h->root.type == bfd_link_hash_defined |
8229 | || h->root.type == bfd_link_hash_defweak) | |
8230 | value = h->root.u.def.value; | |
8231 | else if (h->root.type == bfd_link_hash_undefweak) | |
8232 | value = 0; | |
8233 | else | |
663a1470 AM |
8234 | { |
8235 | found_tls_get_addr_arg = 0; | |
8236 | continue; | |
8237 | } | |
102890f0 AM |
8238 | } |
8239 | else | |
8240 | /* Symbols referenced by TLS relocs must be of type | |
8241 | STT_TLS. So no need for .opd local sym adjust. */ | |
8242 | value = sym->st_value; | |
8243 | ||
8244 | ok_tprel = FALSE; | |
8245 | is_local = FALSE; | |
8246 | if (h == NULL | |
8247 | || !h->def_dynamic) | |
8248 | { | |
8249 | is_local = TRUE; | |
766bc656 AM |
8250 | if (h != NULL |
8251 | && h->root.type == bfd_link_hash_undefweak) | |
8252 | ok_tprel = TRUE; | |
8253 | else | |
8254 | { | |
8255 | value += sym_sec->output_offset; | |
8256 | value += sym_sec->output_section->vma; | |
8257 | value -= htab->elf.tls_sec->vma; | |
8258 | ok_tprel = (value + TP_OFFSET + ((bfd_vma) 1 << 31) | |
8259 | < (bfd_vma) 1 << 32); | |
8260 | } | |
102890f0 | 8261 | } |
951fd09b | 8262 | |
102890f0 | 8263 | r_type = ELF64_R_TYPE (rel->r_info); |
663a1470 AM |
8264 | /* If this section has old-style __tls_get_addr calls |
8265 | without marker relocs, then check that each | |
8266 | __tls_get_addr call reloc is preceded by a reloc | |
8267 | that conceivably belongs to the __tls_get_addr arg | |
8268 | setup insn. If we don't find matching arg setup | |
8269 | relocs, don't do any tls optimization. */ | |
8270 | if (pass == 0 | |
8271 | && sec->has_tls_get_addr_call | |
8272 | && h != NULL | |
8273 | && (h == &htab->tls_get_addr->elf | |
8274 | || h == &htab->tls_get_addr_fd->elf) | |
8275 | && !found_tls_get_addr_arg | |
8276 | && is_branch_reloc (r_type)) | |
8277 | { | |
25f53a85 | 8278 | info->callbacks->minfo (_("%H __tls_get_addr lost arg, " |
663a1470 AM |
8279 | "TLS optimization disabled\n"), |
8280 | ibfd, sec, rel->r_offset); | |
8281 | ret = TRUE; | |
8282 | goto err_free_rel; | |
8283 | } | |
8284 | ||
8285 | found_tls_get_addr_arg = 0; | |
102890f0 AM |
8286 | switch (r_type) |
8287 | { | |
8288 | case R_PPC64_GOT_TLSLD16: | |
8289 | case R_PPC64_GOT_TLSLD16_LO: | |
8290 | expecting_tls_get_addr = 1; | |
663a1470 | 8291 | found_tls_get_addr_arg = 1; |
102890f0 AM |
8292 | /* Fall thru */ |
8293 | ||
8294 | case R_PPC64_GOT_TLSLD16_HI: | |
8295 | case R_PPC64_GOT_TLSLD16_HA: | |
8296 | /* These relocs should never be against a symbol | |
8297 | defined in a shared lib. Leave them alone if | |
8298 | that turns out to be the case. */ | |
8299 | if (!is_local) | |
8300 | continue; | |
411e1bfb | 8301 | |
102890f0 | 8302 | /* LD -> LE */ |
411e1bfb | 8303 | tls_set = 0; |
102890f0 AM |
8304 | tls_clear = TLS_LD; |
8305 | tls_type = TLS_TLS | TLS_LD; | |
8306 | break; | |
411e1bfb | 8307 | |
102890f0 AM |
8308 | case R_PPC64_GOT_TLSGD16: |
8309 | case R_PPC64_GOT_TLSGD16_LO: | |
8310 | expecting_tls_get_addr = 1; | |
663a1470 | 8311 | found_tls_get_addr_arg = 1; |
102890f0 AM |
8312 | /* Fall thru */ |
8313 | ||
8314 | case R_PPC64_GOT_TLSGD16_HI: | |
8315 | case R_PPC64_GOT_TLSGD16_HA: | |
8316 | if (ok_tprel) | |
8317 | /* GD -> LE */ | |
411e1bfb | 8318 | tls_set = 0; |
102890f0 AM |
8319 | else |
8320 | /* GD -> IE */ | |
8321 | tls_set = TLS_TLS | TLS_TPRELGD; | |
8322 | tls_clear = TLS_GD; | |
8323 | tls_type = TLS_TLS | TLS_GD; | |
8324 | break; | |
8325 | ||
8326 | case R_PPC64_GOT_TPREL16_DS: | |
8327 | case R_PPC64_GOT_TPREL16_LO_DS: | |
8328 | case R_PPC64_GOT_TPREL16_HI: | |
8329 | case R_PPC64_GOT_TPREL16_HA: | |
8330 | if (ok_tprel) | |
8331 | { | |
8332 | /* IE -> LE */ | |
8333 | tls_set = 0; | |
8334 | tls_clear = TLS_TPREL; | |
8335 | tls_type = TLS_TLS | TLS_TPREL; | |
8336 | break; | |
8337 | } | |
411e1bfb AM |
8338 | continue; |
8339 | ||
727fc41e AM |
8340 | case R_PPC64_TLSGD: |
8341 | case R_PPC64_TLSLD: | |
663a1470 AM |
8342 | found_tls_get_addr_arg = 1; |
8343 | /* Fall thru */ | |
8344 | ||
8345 | case R_PPC64_TLS: | |
8346 | case R_PPC64_TOC16: | |
8347 | case R_PPC64_TOC16_LO: | |
102890f0 AM |
8348 | if (sym_sec == NULL || sym_sec != toc) |
8349 | continue; | |
8350 | ||
8351 | /* Mark this toc entry as referenced by a TLS | |
8352 | code sequence. We can do that now in the | |
8353 | case of R_PPC64_TLS, and after checking for | |
8354 | tls_get_addr for the TOC16 relocs. */ | |
8355 | if (toc_ref == NULL) | |
663a1470 AM |
8356 | toc_ref = bfd_zmalloc (toc->output_section->rawsize / 8); |
8357 | if (toc_ref == NULL) | |
8358 | goto err_free_rel; | |
8359 | ||
102890f0 AM |
8360 | if (h != NULL) |
8361 | value = h->root.u.def.value; | |
8362 | else | |
8363 | value = sym->st_value; | |
8364 | value += rel->r_addend; | |
73242275 AM |
8365 | if (value % 8 != 0) |
8366 | continue; | |
8367 | BFD_ASSERT (value < toc->size | |
8368 | && toc->output_offset % 8 == 0); | |
663a1470 | 8369 | toc_ref_index = (value + toc->output_offset) / 8; |
727fc41e AM |
8370 | if (r_type == R_PPC64_TLS |
8371 | || r_type == R_PPC64_TLSGD | |
8372 | || r_type == R_PPC64_TLSLD) | |
102890f0 AM |
8373 | { |
8374 | toc_ref[toc_ref_index] = 1; | |
8375 | continue; | |
8376 | } | |
8377 | ||
8378 | if (pass != 0 && toc_ref[toc_ref_index] == 0) | |
8379 | continue; | |
8380 | ||
8381 | tls_set = 0; | |
8382 | tls_clear = 0; | |
8383 | expecting_tls_get_addr = 2; | |
8384 | break; | |
8385 | ||
8386 | case R_PPC64_TPREL64: | |
8387 | if (pass == 0 | |
8388 | || sec != toc | |
8389 | || toc_ref == NULL | |
663a1470 | 8390 | || !toc_ref[(rel->r_offset + toc->output_offset) / 8]) |
102890f0 AM |
8391 | continue; |
8392 | if (ok_tprel) | |
8393 | { | |
8394 | /* IE -> LE */ | |
8395 | tls_set = TLS_EXPLICIT; | |
8396 | tls_clear = TLS_TPREL; | |
8397 | break; | |
8398 | } | |
8399 | continue; | |
8400 | ||
8401 | case R_PPC64_DTPMOD64: | |
8402 | if (pass == 0 | |
8403 | || sec != toc | |
8404 | || toc_ref == NULL | |
663a1470 | 8405 | || !toc_ref[(rel->r_offset + toc->output_offset) / 8]) |
102890f0 AM |
8406 | continue; |
8407 | if (rel + 1 < relend | |
8408 | && (rel[1].r_info | |
8409 | == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)) | |
8410 | && rel[1].r_offset == rel->r_offset + 8) | |
8411 | { | |
8412 | if (ok_tprel) | |
8413 | /* GD -> LE */ | |
8414 | tls_set = TLS_EXPLICIT | TLS_GD; | |
8415 | else | |
8416 | /* GD -> IE */ | |
8417 | tls_set = TLS_EXPLICIT | TLS_GD | TLS_TPRELGD; | |
8418 | tls_clear = TLS_GD; | |
8419 | } | |
8420 | else | |
8421 | { | |
8422 | if (!is_local) | |
8423 | continue; | |
8424 | ||
8425 | /* LD -> LE */ | |
8426 | tls_set = TLS_EXPLICIT; | |
8427 | tls_clear = TLS_LD; | |
8428 | } | |
8429 | break; | |
8430 | ||
8431 | default: | |
8432 | continue; | |
8433 | } | |
8434 | ||
8435 | if (pass == 0) | |
8436 | { | |
727fc41e AM |
8437 | if (!expecting_tls_get_addr |
8438 | || !sec->has_tls_get_addr_call) | |
102890f0 AM |
8439 | continue; |
8440 | ||
3a71aa26 AM |
8441 | if (rel + 1 < relend |
8442 | && branch_reloc_hash_match (ibfd, rel + 1, | |
8443 | htab->tls_get_addr, | |
8444 | htab->tls_get_addr_fd)) | |
102890f0 | 8445 | { |
3a71aa26 | 8446 | if (expecting_tls_get_addr == 2) |
102890f0 | 8447 | { |
3a71aa26 | 8448 | /* Check for toc tls entries. */ |
f961d9dd | 8449 | unsigned char *toc_tls; |
3a71aa26 AM |
8450 | int retval; |
8451 | ||
8452 | retval = get_tls_mask (&toc_tls, NULL, NULL, | |
8453 | &locsyms, | |
8454 | rel, ibfd); | |
8455 | if (retval == 0) | |
8456 | goto err_free_rel; | |
663a1470 AM |
8457 | if (toc_tls != NULL) |
8458 | { | |
8459 | if ((*toc_tls & (TLS_GD | TLS_LD)) != 0) | |
8460 | found_tls_get_addr_arg = 1; | |
8461 | if (retval > 1) | |
8462 | toc_ref[toc_ref_index] = 1; | |
8463 | } | |
102890f0 | 8464 | } |
3a71aa26 | 8465 | continue; |
102890f0 AM |
8466 | } |
8467 | ||
8468 | if (expecting_tls_get_addr != 1) | |
8469 | continue; | |
8470 | ||
8471 | /* Uh oh, we didn't find the expected call. We | |
8472 | could just mark this symbol to exclude it | |
8473 | from tls optimization but it's safer to skip | |
663a1470 | 8474 | the entire optimization. */ |
25f53a85 | 8475 | info->callbacks->minfo (_("%H arg lost __tls_get_addr, " |
663a1470 AM |
8476 | "TLS optimization disabled\n"), |
8477 | ibfd, sec, rel->r_offset); | |
8478 | ret = TRUE; | |
8479 | goto err_free_rel; | |
102890f0 AM |
8480 | } |
8481 | ||
85f7a9cb | 8482 | if (expecting_tls_get_addr && htab->tls_get_addr != NULL) |
102890f0 AM |
8483 | { |
8484 | struct plt_entry *ent; | |
8485 | for (ent = htab->tls_get_addr->elf.plt.plist; | |
8486 | ent != NULL; | |
8487 | ent = ent->next) | |
8488 | if (ent->addend == 0) | |
411e1bfb | 8489 | { |
102890f0 | 8490 | if (ent->plt.refcount > 0) |
30038c59 | 8491 | { |
102890f0 AM |
8492 | ent->plt.refcount -= 1; |
8493 | expecting_tls_get_addr = 0; | |
30038c59 | 8494 | } |
102890f0 | 8495 | break; |
411e1bfb | 8496 | } |
102890f0 | 8497 | } |
411e1bfb | 8498 | |
85f7a9cb | 8499 | if (expecting_tls_get_addr && htab->tls_get_addr_fd != NULL) |
102890f0 AM |
8500 | { |
8501 | struct plt_entry *ent; | |
8502 | for (ent = htab->tls_get_addr_fd->elf.plt.plist; | |
8503 | ent != NULL; | |
8504 | ent = ent->next) | |
8505 | if (ent->addend == 0) | |
411e1bfb | 8506 | { |
102890f0 AM |
8507 | if (ent->plt.refcount > 0) |
8508 | ent->plt.refcount -= 1; | |
8509 | break; | |
411e1bfb | 8510 | } |
102890f0 | 8511 | } |
411e1bfb | 8512 | |
102890f0 | 8513 | if (tls_clear == 0) |
30038c59 AM |
8514 | continue; |
8515 | ||
102890f0 AM |
8516 | if ((tls_set & TLS_EXPLICIT) == 0) |
8517 | { | |
8518 | struct got_entry *ent; | |
411e1bfb | 8519 | |
102890f0 AM |
8520 | /* Adjust got entry for this reloc. */ |
8521 | if (h != NULL) | |
8522 | ent = h->got.glist; | |
8523 | else | |
8524 | ent = elf_local_got_ents (ibfd)[r_symndx]; | |
411e1bfb | 8525 | |
102890f0 AM |
8526 | for (; ent != NULL; ent = ent->next) |
8527 | if (ent->addend == rel->r_addend | |
8528 | && ent->owner == ibfd | |
8529 | && ent->tls_type == tls_type) | |
8530 | break; | |
8531 | if (ent == NULL) | |
8532 | abort (); | |
411e1bfb | 8533 | |
102890f0 AM |
8534 | if (tls_set == 0) |
8535 | { | |
8536 | /* We managed to get rid of a got entry. */ | |
8537 | if (ent->got.refcount > 0) | |
8538 | ent->got.refcount -= 1; | |
8539 | } | |
8540 | } | |
8541 | else | |
8542 | { | |
8543 | /* If we got rid of a DTPMOD/DTPREL reloc pair then | |
8544 | we'll lose one or two dyn relocs. */ | |
8545 | if (!dec_dynrel_count (rel->r_info, sec, info, | |
19e08130 | 8546 | NULL, h, sym)) |
102890f0 | 8547 | return FALSE; |
411e1bfb | 8548 | |
102890f0 AM |
8549 | if (tls_set == (TLS_EXPLICIT | TLS_GD)) |
8550 | { | |
8551 | if (!dec_dynrel_count ((rel + 1)->r_info, sec, info, | |
19e08130 | 8552 | NULL, h, sym)) |
102890f0 AM |
8553 | return FALSE; |
8554 | } | |
8555 | } | |
411e1bfb | 8556 | |
102890f0 AM |
8557 | *tls_mask |= tls_set; |
8558 | *tls_mask &= ~tls_clear; | |
8559 | } | |
8c1d1bb8 | 8560 | |
102890f0 AM |
8561 | if (elf_section_data (sec)->relocs != relstart) |
8562 | free (relstart); | |
8563 | } | |
411e1bfb | 8564 | |
663a1470 AM |
8565 | if (locsyms != NULL |
8566 | && (elf_symtab_hdr (ibfd).contents != (unsigned char *) locsyms)) | |
8567 | { | |
8568 | if (!info->keep_memory) | |
8569 | free (locsyms); | |
8570 | else | |
8571 | elf_symtab_hdr (ibfd).contents = (unsigned char *) locsyms; | |
8572 | } | |
8573 | } | |
411e1bfb | 8574 | |
663a1470 AM |
8575 | if (toc_ref != NULL) |
8576 | free (toc_ref); | |
b34976b6 | 8577 | return TRUE; |
1e2f5b6e | 8578 | } |
b34976b6 | 8579 | |
c5614fa4 AM |
8580 | /* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust |
8581 | the values of any global symbols in a toc section that has been | |
8582 | edited. Globals in toc sections should be a rarity, so this function | |
8583 | sets a flag if any are found in toc sections other than the one just | |
8584 | edited, so that futher hash table traversals can be avoided. */ | |
8585 | ||
8586 | struct adjust_toc_info | |
8587 | { | |
8588 | asection *toc; | |
8589 | unsigned long *skip; | |
8590 | bfd_boolean global_toc_syms; | |
8591 | }; | |
8592 | ||
ba761f19 AM |
8593 | enum toc_skip_enum { ref_from_discarded = 1, can_optimize = 2 }; |
8594 | ||
c5614fa4 AM |
8595 | static bfd_boolean |
8596 | adjust_toc_syms (struct elf_link_hash_entry *h, void *inf) | |
8597 | { | |
8598 | struct ppc_link_hash_entry *eh; | |
8599 | struct adjust_toc_info *toc_inf = (struct adjust_toc_info *) inf; | |
854b41e7 | 8600 | unsigned long i; |
c5614fa4 | 8601 | |
c5614fa4 AM |
8602 | if (h->root.type != bfd_link_hash_defined |
8603 | && h->root.type != bfd_link_hash_defweak) | |
8604 | return TRUE; | |
8605 | ||
8606 | eh = (struct ppc_link_hash_entry *) h; | |
8607 | if (eh->adjust_done) | |
8608 | return TRUE; | |
8609 | ||
8610 | if (eh->elf.root.u.def.section == toc_inf->toc) | |
8611 | { | |
854b41e7 AM |
8612 | if (eh->elf.root.u.def.value > toc_inf->toc->rawsize) |
8613 | i = toc_inf->toc->rawsize >> 3; | |
c5614fa4 | 8614 | else |
854b41e7 AM |
8615 | i = eh->elf.root.u.def.value >> 3; |
8616 | ||
ba761f19 | 8617 | if ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0) |
c5614fa4 AM |
8618 | { |
8619 | (*_bfd_error_handler) | |
854b41e7 AM |
8620 | (_("%s defined on removed toc entry"), eh->elf.root.root.string); |
8621 | do | |
8622 | ++i; | |
ba761f19 | 8623 | while ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0); |
854b41e7 | 8624 | eh->elf.root.u.def.value = (bfd_vma) i << 3; |
c5614fa4 | 8625 | } |
854b41e7 AM |
8626 | |
8627 | eh->elf.root.u.def.value -= toc_inf->skip[i]; | |
c5614fa4 AM |
8628 | eh->adjust_done = 1; |
8629 | } | |
8630 | else if (strcmp (eh->elf.root.u.def.section->name, ".toc") == 0) | |
8631 | toc_inf->global_toc_syms = TRUE; | |
8632 | ||
8633 | return TRUE; | |
8634 | } | |
8635 | ||
560c8763 AM |
8636 | /* Return TRUE iff INSN is one we expect on a _LO variety toc/got reloc. */ |
8637 | ||
8638 | static bfd_boolean | |
8639 | ok_lo_toc_insn (unsigned int insn) | |
8640 | { | |
8641 | return ((insn & (0x3f << 26)) == 14u << 26 /* addi */ | |
8642 | || (insn & (0x3f << 26)) == 32u << 26 /* lwz */ | |
8643 | || (insn & (0x3f << 26)) == 34u << 26 /* lbz */ | |
8644 | || (insn & (0x3f << 26)) == 36u << 26 /* stw */ | |
8645 | || (insn & (0x3f << 26)) == 38u << 26 /* stb */ | |
8646 | || (insn & (0x3f << 26)) == 40u << 26 /* lhz */ | |
8647 | || (insn & (0x3f << 26)) == 42u << 26 /* lha */ | |
8648 | || (insn & (0x3f << 26)) == 44u << 26 /* sth */ | |
8649 | || (insn & (0x3f << 26)) == 46u << 26 /* lmw */ | |
8650 | || (insn & (0x3f << 26)) == 47u << 26 /* stmw */ | |
8651 | || (insn & (0x3f << 26)) == 48u << 26 /* lfs */ | |
8652 | || (insn & (0x3f << 26)) == 50u << 26 /* lfd */ | |
8653 | || (insn & (0x3f << 26)) == 52u << 26 /* stfs */ | |
8654 | || (insn & (0x3f << 26)) == 54u << 26 /* stfd */ | |
8655 | || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */ | |
8656 | && (insn & 3) != 1) | |
8657 | || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */ | |
8658 | && ((insn & 3) == 0 || (insn & 3) == 3)) | |
8659 | || (insn & (0x3f << 26)) == 12u << 26 /* addic */); | |
8660 | } | |
8661 | ||
c5614fa4 AM |
8662 | /* Examine all relocs referencing .toc sections in order to remove |
8663 | unused .toc entries. */ | |
8664 | ||
8665 | bfd_boolean | |
33c0ec9d | 8666 | ppc64_elf_edit_toc (struct bfd_link_info *info) |
c5614fa4 AM |
8667 | { |
8668 | bfd *ibfd; | |
8669 | struct adjust_toc_info toc_inf; | |
67f0cbdb | 8670 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
c5614fa4 | 8671 | |
67f0cbdb | 8672 | htab->do_toc_opt = 1; |
c5614fa4 | 8673 | toc_inf.global_toc_syms = TRUE; |
c72f2fb2 | 8674 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
c5614fa4 AM |
8675 | { |
8676 | asection *toc, *sec; | |
8677 | Elf_Internal_Shdr *symtab_hdr; | |
8678 | Elf_Internal_Sym *local_syms; | |
425b145b | 8679 | Elf_Internal_Rela *relstart, *rel, *toc_relocs; |
c5614fa4 AM |
8680 | unsigned long *skip, *drop; |
8681 | unsigned char *used; | |
8682 | unsigned char *keep, last, some_unused; | |
8683 | ||
854b41e7 AM |
8684 | if (!is_ppc64_elf (ibfd)) |
8685 | continue; | |
8686 | ||
c5614fa4 AM |
8687 | toc = bfd_get_section_by_name (ibfd, ".toc"); |
8688 | if (toc == NULL | |
92b7a70f | 8689 | || toc->size == 0 |
dbaa2011 AM |
8690 | || toc->sec_info_type == SEC_INFO_TYPE_JUST_SYMS |
8691 | || discarded_section (toc)) | |
c5614fa4 AM |
8692 | continue; |
8693 | ||
425b145b | 8694 | toc_relocs = NULL; |
c5614fa4 | 8695 | local_syms = NULL; |
0ffa91dd | 8696 | symtab_hdr = &elf_symtab_hdr (ibfd); |
c5614fa4 AM |
8697 | |
8698 | /* Look at sections dropped from the final link. */ | |
8699 | skip = NULL; | |
8700 | relstart = NULL; | |
8701 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
8702 | { | |
8703 | if (sec->reloc_count == 0 | |
dbaa2011 | 8704 | || !discarded_section (sec) |
c5614fa4 AM |
8705 | || get_opd_info (sec) |
8706 | || (sec->flags & SEC_ALLOC) == 0 | |
8707 | || (sec->flags & SEC_DEBUGGING) != 0) | |
8708 | continue; | |
8709 | ||
8710 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, FALSE); | |
8711 | if (relstart == NULL) | |
8712 | goto error_ret; | |
8713 | ||
8714 | /* Run through the relocs to see which toc entries might be | |
8715 | unused. */ | |
8716 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
8717 | { | |
8718 | enum elf_ppc64_reloc_type r_type; | |
8719 | unsigned long r_symndx; | |
8720 | asection *sym_sec; | |
8721 | struct elf_link_hash_entry *h; | |
8722 | Elf_Internal_Sym *sym; | |
8723 | bfd_vma val; | |
8724 | ||
8725 | r_type = ELF64_R_TYPE (rel->r_info); | |
8726 | switch (r_type) | |
8727 | { | |
8728 | default: | |
8729 | continue; | |
8730 | ||
8731 | case R_PPC64_TOC16: | |
8732 | case R_PPC64_TOC16_LO: | |
8733 | case R_PPC64_TOC16_HI: | |
8734 | case R_PPC64_TOC16_HA: | |
8735 | case R_PPC64_TOC16_DS: | |
8736 | case R_PPC64_TOC16_LO_DS: | |
8737 | break; | |
8738 | } | |
8739 | ||
8740 | r_symndx = ELF64_R_SYM (rel->r_info); | |
8741 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
8742 | r_symndx, ibfd)) | |
8743 | goto error_ret; | |
8744 | ||
8745 | if (sym_sec != toc) | |
8746 | continue; | |
8747 | ||
8748 | if (h != NULL) | |
8749 | val = h->root.u.def.value; | |
8750 | else | |
8751 | val = sym->st_value; | |
8752 | val += rel->r_addend; | |
8753 | ||
8754 | if (val >= toc->size) | |
8755 | continue; | |
8756 | ||
8757 | /* Anything in the toc ought to be aligned to 8 bytes. | |
8758 | If not, don't mark as unused. */ | |
8759 | if (val & 7) | |
8760 | continue; | |
8761 | ||
8762 | if (skip == NULL) | |
8763 | { | |
854b41e7 | 8764 | skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8); |
c5614fa4 AM |
8765 | if (skip == NULL) |
8766 | goto error_ret; | |
8767 | } | |
8768 | ||
ba761f19 | 8769 | skip[val >> 3] = ref_from_discarded; |
c5614fa4 AM |
8770 | } |
8771 | ||
8772 | if (elf_section_data (sec)->relocs != relstart) | |
8773 | free (relstart); | |
8774 | } | |
8775 | ||
ba761f19 AM |
8776 | /* For largetoc loads of address constants, we can convert |
8777 | . addis rx,2,addr@got@ha | |
8778 | . ld ry,addr@got@l(rx) | |
8779 | to | |
8780 | . addis rx,2,addr@toc@ha | |
8781 | . addi ry,rx,addr@toc@l | |
8782 | when addr is within 2G of the toc pointer. This then means | |
8783 | that the word storing "addr" in the toc is no longer needed. */ | |
68ffbac6 | 8784 | |
ba761f19 AM |
8785 | if (!ppc64_elf_tdata (ibfd)->has_small_toc_reloc |
8786 | && toc->output_section->rawsize < (bfd_vma) 1 << 31 | |
8787 | && toc->reloc_count != 0) | |
8788 | { | |
8789 | /* Read toc relocs. */ | |
425b145b AM |
8790 | toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL, |
8791 | info->keep_memory); | |
8792 | if (toc_relocs == NULL) | |
ba761f19 AM |
8793 | goto error_ret; |
8794 | ||
425b145b | 8795 | for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel) |
ba761f19 AM |
8796 | { |
8797 | enum elf_ppc64_reloc_type r_type; | |
8798 | unsigned long r_symndx; | |
8799 | asection *sym_sec; | |
8800 | struct elf_link_hash_entry *h; | |
8801 | Elf_Internal_Sym *sym; | |
8802 | bfd_vma val, addr; | |
8803 | ||
8804 | r_type = ELF64_R_TYPE (rel->r_info); | |
8805 | if (r_type != R_PPC64_ADDR64) | |
8806 | continue; | |
8807 | ||
8808 | r_symndx = ELF64_R_SYM (rel->r_info); | |
8809 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
8810 | r_symndx, ibfd)) | |
8811 | goto error_ret; | |
8812 | ||
425b145b | 8813 | if (sym_sec == NULL |
dbaa2011 | 8814 | || discarded_section (sym_sec)) |
425b145b AM |
8815 | continue; |
8816 | ||
afe397ea | 8817 | if (!SYMBOL_REFERENCES_LOCAL (info, h)) |
ba761f19 AM |
8818 | continue; |
8819 | ||
8820 | if (h != NULL) | |
bddc25c9 AM |
8821 | { |
8822 | if (h->type == STT_GNU_IFUNC) | |
8823 | continue; | |
8824 | val = h->root.u.def.value; | |
8825 | } | |
ba761f19 | 8826 | else |
bddc25c9 AM |
8827 | { |
8828 | if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
8829 | continue; | |
8830 | val = sym->st_value; | |
8831 | } | |
ba761f19 AM |
8832 | val += rel->r_addend; |
8833 | val += sym_sec->output_section->vma + sym_sec->output_offset; | |
8834 | ||
8835 | /* We don't yet know the exact toc pointer value, but we | |
8836 | know it will be somewhere in the toc section. Don't | |
8837 | optimize if the difference from any possible toc | |
8838 | pointer is outside [ff..f80008000, 7fff7fff]. */ | |
8839 | addr = toc->output_section->vma + TOC_BASE_OFF; | |
8840 | if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32) | |
8841 | continue; | |
8842 | ||
8843 | addr = toc->output_section->vma + toc->output_section->rawsize; | |
8844 | if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32) | |
8845 | continue; | |
8846 | ||
8847 | if (skip == NULL) | |
8848 | { | |
8849 | skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8); | |
8850 | if (skip == NULL) | |
8851 | goto error_ret; | |
8852 | } | |
8853 | ||
8854 | skip[rel->r_offset >> 3] | |
425b145b | 8855 | |= can_optimize | ((rel - toc_relocs) << 2); |
ba761f19 | 8856 | } |
ba761f19 AM |
8857 | } |
8858 | ||
c5614fa4 AM |
8859 | if (skip == NULL) |
8860 | continue; | |
8861 | ||
8862 | used = bfd_zmalloc (sizeof (*used) * (toc->size + 7) / 8); | |
8863 | if (used == NULL) | |
8864 | { | |
8865 | error_ret: | |
8866 | if (local_syms != NULL | |
8867 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
8868 | free (local_syms); | |
8869 | if (sec != NULL | |
8870 | && relstart != NULL | |
8871 | && elf_section_data (sec)->relocs != relstart) | |
8872 | free (relstart); | |
425b145b AM |
8873 | if (toc_relocs != NULL |
8874 | && elf_section_data (toc)->relocs != toc_relocs) | |
8875 | free (toc_relocs); | |
c5614fa4 AM |
8876 | if (skip != NULL) |
8877 | free (skip); | |
8878 | return FALSE; | |
8879 | } | |
8880 | ||
30038c59 AM |
8881 | /* Now check all kept sections that might reference the toc. |
8882 | Check the toc itself last. */ | |
8883 | for (sec = (ibfd->sections == toc && toc->next ? toc->next | |
8884 | : ibfd->sections); | |
c5614fa4 | 8885 | sec != NULL; |
c5614fa4 | 8886 | sec = (sec == toc ? NULL |
c5614fa4 | 8887 | : sec->next == NULL ? toc |
30038c59 | 8888 | : sec->next == toc && toc->next ? toc->next |
c5614fa4 AM |
8889 | : sec->next)) |
8890 | { | |
8891 | int repeat; | |
8892 | ||
8893 | if (sec->reloc_count == 0 | |
dbaa2011 | 8894 | || discarded_section (sec) |
c5614fa4 AM |
8895 | || get_opd_info (sec) |
8896 | || (sec->flags & SEC_ALLOC) == 0 | |
8897 | || (sec->flags & SEC_DEBUGGING) != 0) | |
8898 | continue; | |
8899 | ||
854b41e7 AM |
8900 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, |
8901 | info->keep_memory); | |
c5614fa4 | 8902 | if (relstart == NULL) |
2915c55b JK |
8903 | { |
8904 | free (used); | |
8905 | goto error_ret; | |
8906 | } | |
c5614fa4 AM |
8907 | |
8908 | /* Mark toc entries referenced as used. */ | |
c5614fa4 | 8909 | do |
d4f1ee75 AM |
8910 | { |
8911 | repeat = 0; | |
8912 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
8913 | { | |
8914 | enum elf_ppc64_reloc_type r_type; | |
8915 | unsigned long r_symndx; | |
8916 | asection *sym_sec; | |
8917 | struct elf_link_hash_entry *h; | |
8918 | Elf_Internal_Sym *sym; | |
8919 | bfd_vma val; | |
8920 | enum {no_check, check_lo, check_ha} insn_check; | |
98528052 | 8921 | |
d4f1ee75 AM |
8922 | r_type = ELF64_R_TYPE (rel->r_info); |
8923 | switch (r_type) | |
8924 | { | |
8925 | default: | |
8926 | insn_check = no_check; | |
8927 | break; | |
98528052 | 8928 | |
d4f1ee75 AM |
8929 | case R_PPC64_GOT_TLSLD16_HA: |
8930 | case R_PPC64_GOT_TLSGD16_HA: | |
8931 | case R_PPC64_GOT_TPREL16_HA: | |
8932 | case R_PPC64_GOT_DTPREL16_HA: | |
8933 | case R_PPC64_GOT16_HA: | |
8934 | case R_PPC64_TOC16_HA: | |
8935 | insn_check = check_ha; | |
8936 | break; | |
98528052 | 8937 | |
d4f1ee75 AM |
8938 | case R_PPC64_GOT_TLSLD16_LO: |
8939 | case R_PPC64_GOT_TLSGD16_LO: | |
8940 | case R_PPC64_GOT_TPREL16_LO_DS: | |
8941 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
8942 | case R_PPC64_GOT16_LO: | |
8943 | case R_PPC64_GOT16_LO_DS: | |
8944 | case R_PPC64_TOC16_LO: | |
8945 | case R_PPC64_TOC16_LO_DS: | |
8946 | insn_check = check_lo; | |
8947 | break; | |
8948 | } | |
560c8763 | 8949 | |
d4f1ee75 AM |
8950 | if (insn_check != no_check) |
8951 | { | |
8952 | bfd_vma off = rel->r_offset & ~3; | |
8953 | unsigned char buf[4]; | |
8954 | unsigned int insn; | |
c5614fa4 | 8955 | |
d4f1ee75 AM |
8956 | if (!bfd_get_section_contents (ibfd, sec, buf, off, 4)) |
8957 | { | |
8958 | free (used); | |
8959 | goto error_ret; | |
8960 | } | |
8961 | insn = bfd_get_32 (ibfd, buf); | |
8962 | if (insn_check == check_lo | |
8963 | ? !ok_lo_toc_insn (insn) | |
8964 | : ((insn & ((0x3f << 26) | 0x1f << 16)) | |
8965 | != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */)) | |
8966 | { | |
8967 | char str[12]; | |
8968 | ||
8969 | ppc64_elf_tdata (ibfd)->unexpected_toc_insn = 1; | |
8970 | sprintf (str, "%#08x", insn); | |
8971 | info->callbacks->einfo | |
8972 | (_("%P: %H: toc optimization is not supported for" | |
8973 | " %s instruction.\n"), | |
8974 | ibfd, sec, rel->r_offset & ~3, str); | |
8975 | } | |
8976 | } | |
c5614fa4 | 8977 | |
d4f1ee75 AM |
8978 | switch (r_type) |
8979 | { | |
8980 | case R_PPC64_TOC16: | |
8981 | case R_PPC64_TOC16_LO: | |
8982 | case R_PPC64_TOC16_HI: | |
8983 | case R_PPC64_TOC16_HA: | |
8984 | case R_PPC64_TOC16_DS: | |
8985 | case R_PPC64_TOC16_LO_DS: | |
8986 | /* In case we're taking addresses of toc entries. */ | |
8987 | case R_PPC64_ADDR64: | |
8988 | break; | |
c5614fa4 | 8989 | |
d4f1ee75 AM |
8990 | default: |
8991 | continue; | |
8992 | } | |
c5614fa4 | 8993 | |
d4f1ee75 AM |
8994 | r_symndx = ELF64_R_SYM (rel->r_info); |
8995 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
8996 | r_symndx, ibfd)) | |
8997 | { | |
8998 | free (used); | |
8999 | goto error_ret; | |
9000 | } | |
c5614fa4 | 9001 | |
d4f1ee75 AM |
9002 | if (sym_sec != toc) |
9003 | continue; | |
c5614fa4 | 9004 | |
d4f1ee75 AM |
9005 | if (h != NULL) |
9006 | val = h->root.u.def.value; | |
9007 | else | |
9008 | val = sym->st_value; | |
9009 | val += rel->r_addend; | |
ba761f19 | 9010 | |
d4f1ee75 AM |
9011 | if (val >= toc->size) |
9012 | continue; | |
ba761f19 | 9013 | |
d4f1ee75 AM |
9014 | if ((skip[val >> 3] & can_optimize) != 0) |
9015 | { | |
9016 | bfd_vma off; | |
9017 | unsigned char opc; | |
9018 | ||
9019 | switch (r_type) | |
9020 | { | |
9021 | case R_PPC64_TOC16_HA: | |
ba761f19 | 9022 | break; |
ba761f19 | 9023 | |
d4f1ee75 AM |
9024 | case R_PPC64_TOC16_LO_DS: |
9025 | off = rel->r_offset; | |
9026 | off += (bfd_big_endian (ibfd) ? -2 : 3); | |
9027 | if (!bfd_get_section_contents (ibfd, sec, &opc, | |
9028 | off, 1)) | |
9029 | { | |
9030 | free (used); | |
9031 | goto error_ret; | |
9032 | } | |
9033 | if ((opc & (0x3f << 2)) == (58u << 2)) | |
9034 | break; | |
9035 | /* Fall thru */ | |
ba761f19 | 9036 | |
d4f1ee75 AM |
9037 | default: |
9038 | /* Wrong sort of reloc, or not a ld. We may | |
9039 | as well clear ref_from_discarded too. */ | |
9040 | skip[val >> 3] = 0; | |
9041 | } | |
9042 | } | |
9043 | ||
9044 | if (sec != toc) | |
9045 | used[val >> 3] = 1; | |
9046 | /* For the toc section, we only mark as used if this | |
9047 | entry itself isn't unused. */ | |
9048 | else if ((used[rel->r_offset >> 3] | |
9049 | || !(skip[rel->r_offset >> 3] & ref_from_discarded)) | |
9050 | && !used[val >> 3]) | |
9051 | { | |
9052 | /* Do all the relocs again, to catch reference | |
9053 | chains. */ | |
9054 | repeat = 1; | |
9055 | used[val >> 3] = 1; | |
9056 | } | |
9057 | } | |
9058 | } | |
c5614fa4 | 9059 | while (repeat); |
854b41e7 AM |
9060 | |
9061 | if (elf_section_data (sec)->relocs != relstart) | |
9062 | free (relstart); | |
c5614fa4 AM |
9063 | } |
9064 | ||
9065 | /* Merge the used and skip arrays. Assume that TOC | |
9066 | doublewords not appearing as either used or unused belong | |
9067 | to to an entry more than one doubleword in size. */ | |
9068 | for (drop = skip, keep = used, last = 0, some_unused = 0; | |
9069 | drop < skip + (toc->size + 7) / 8; | |
9070 | ++drop, ++keep) | |
9071 | { | |
9072 | if (*keep) | |
9073 | { | |
ba761f19 AM |
9074 | *drop &= ~ref_from_discarded; |
9075 | if ((*drop & can_optimize) != 0) | |
9076 | some_unused = 1; | |
c5614fa4 AM |
9077 | last = 0; |
9078 | } | |
b140b010 | 9079 | else if ((*drop & ref_from_discarded) != 0) |
c5614fa4 AM |
9080 | { |
9081 | some_unused = 1; | |
ba761f19 | 9082 | last = ref_from_discarded; |
c5614fa4 AM |
9083 | } |
9084 | else | |
9085 | *drop = last; | |
9086 | } | |
9087 | ||
9088 | free (used); | |
9089 | ||
9090 | if (some_unused) | |
9091 | { | |
9092 | bfd_byte *contents, *src; | |
9093 | unsigned long off; | |
d62b3684 | 9094 | Elf_Internal_Sym *sym; |
ba761f19 | 9095 | bfd_boolean local_toc_syms = FALSE; |
c5614fa4 AM |
9096 | |
9097 | /* Shuffle the toc contents, and at the same time convert the | |
9098 | skip array from booleans into offsets. */ | |
9099 | if (!bfd_malloc_and_get_section (ibfd, toc, &contents)) | |
9100 | goto error_ret; | |
9101 | ||
9102 | elf_section_data (toc)->this_hdr.contents = contents; | |
9103 | ||
9104 | for (src = contents, off = 0, drop = skip; | |
9105 | src < contents + toc->size; | |
9106 | src += 8, ++drop) | |
9107 | { | |
ba761f19 AM |
9108 | if ((*drop & (can_optimize | ref_from_discarded)) != 0) |
9109 | off += 8; | |
c5614fa4 AM |
9110 | else if (off != 0) |
9111 | { | |
9112 | *drop = off; | |
9113 | memcpy (src - off, src, 8); | |
9114 | } | |
9115 | } | |
854b41e7 | 9116 | *drop = off; |
c5614fa4 AM |
9117 | toc->rawsize = toc->size; |
9118 | toc->size = src - contents - off; | |
9119 | ||
ba761f19 AM |
9120 | /* Adjust addends for relocs against the toc section sym, |
9121 | and optimize any accesses we can. */ | |
c5614fa4 AM |
9122 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) |
9123 | { | |
9124 | if (sec->reloc_count == 0 | |
dbaa2011 | 9125 | || discarded_section (sec)) |
c5614fa4 AM |
9126 | continue; |
9127 | ||
9128 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, | |
854b41e7 | 9129 | info->keep_memory); |
c5614fa4 AM |
9130 | if (relstart == NULL) |
9131 | goto error_ret; | |
9132 | ||
9133 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
9134 | { | |
9135 | enum elf_ppc64_reloc_type r_type; | |
9136 | unsigned long r_symndx; | |
9137 | asection *sym_sec; | |
9138 | struct elf_link_hash_entry *h; | |
854b41e7 | 9139 | bfd_vma val; |
c5614fa4 AM |
9140 | |
9141 | r_type = ELF64_R_TYPE (rel->r_info); | |
9142 | switch (r_type) | |
9143 | { | |
9144 | default: | |
9145 | continue; | |
9146 | ||
9147 | case R_PPC64_TOC16: | |
9148 | case R_PPC64_TOC16_LO: | |
9149 | case R_PPC64_TOC16_HI: | |
9150 | case R_PPC64_TOC16_HA: | |
9151 | case R_PPC64_TOC16_DS: | |
9152 | case R_PPC64_TOC16_LO_DS: | |
9153 | case R_PPC64_ADDR64: | |
9154 | break; | |
9155 | } | |
9156 | ||
9157 | r_symndx = ELF64_R_SYM (rel->r_info); | |
9158 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
9159 | r_symndx, ibfd)) | |
9160 | goto error_ret; | |
9161 | ||
ba761f19 | 9162 | if (sym_sec != toc) |
c5614fa4 AM |
9163 | continue; |
9164 | ||
ba761f19 AM |
9165 | if (h != NULL) |
9166 | val = h->root.u.def.value; | |
9167 | else | |
9168 | { | |
9169 | val = sym->st_value; | |
9170 | if (val != 0) | |
9171 | local_toc_syms = TRUE; | |
9172 | } | |
9173 | ||
9174 | val += rel->r_addend; | |
854b41e7 AM |
9175 | |
9176 | if (val > toc->rawsize) | |
9177 | val = toc->rawsize; | |
ba761f19 AM |
9178 | else if ((skip[val >> 3] & ref_from_discarded) != 0) |
9179 | continue; | |
9180 | else if ((skip[val >> 3] & can_optimize) != 0) | |
9181 | { | |
9182 | Elf_Internal_Rela *tocrel | |
425b145b | 9183 | = toc_relocs + (skip[val >> 3] >> 2); |
ba761f19 AM |
9184 | unsigned long tsym = ELF64_R_SYM (tocrel->r_info); |
9185 | ||
9186 | switch (r_type) | |
9187 | { | |
9188 | case R_PPC64_TOC16_HA: | |
9189 | rel->r_info = ELF64_R_INFO (tsym, R_PPC64_TOC16_HA); | |
9190 | break; | |
9191 | ||
9192 | case R_PPC64_TOC16_LO_DS: | |
9193 | rel->r_info = ELF64_R_INFO (tsym, R_PPC64_LO_DS_OPT); | |
9194 | break; | |
9195 | ||
9196 | default: | |
28942f62 AM |
9197 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) |
9198 | ppc_howto_init (); | |
b140b010 | 9199 | info->callbacks->einfo |
bc30df16 | 9200 | (_("%P: %H: %s references " |
b140b010 AM |
9201 | "optimized away TOC entry\n"), |
9202 | ibfd, sec, rel->r_offset, | |
9203 | ppc64_elf_howto_table[r_type]->name); | |
9204 | bfd_set_error (bfd_error_bad_value); | |
9205 | goto error_ret; | |
ba761f19 AM |
9206 | } |
9207 | rel->r_addend = tocrel->r_addend; | |
9208 | elf_section_data (sec)->relocs = relstart; | |
9209 | continue; | |
9210 | } | |
9211 | ||
9212 | if (h != NULL || sym->st_value != 0) | |
9213 | continue; | |
854b41e7 AM |
9214 | |
9215 | rel->r_addend -= skip[val >> 3]; | |
9216 | elf_section_data (sec)->relocs = relstart; | |
c5614fa4 | 9217 | } |
854b41e7 AM |
9218 | |
9219 | if (elf_section_data (sec)->relocs != relstart) | |
9220 | free (relstart); | |
c5614fa4 AM |
9221 | } |
9222 | ||
9223 | /* We shouldn't have local or global symbols defined in the TOC, | |
9224 | but handle them anyway. */ | |
df22d223 AM |
9225 | if (local_syms != NULL) |
9226 | for (sym = local_syms; | |
9227 | sym < local_syms + symtab_hdr->sh_info; | |
9228 | ++sym) | |
9229 | if (sym->st_value != 0 | |
9230 | && bfd_section_from_elf_index (ibfd, sym->st_shndx) == toc) | |
9231 | { | |
9232 | unsigned long i; | |
854b41e7 | 9233 | |
df22d223 AM |
9234 | if (sym->st_value > toc->rawsize) |
9235 | i = toc->rawsize >> 3; | |
9236 | else | |
9237 | i = sym->st_value >> 3; | |
854b41e7 | 9238 | |
df22d223 AM |
9239 | if ((skip[i] & (ref_from_discarded | can_optimize)) != 0) |
9240 | { | |
9241 | if (local_toc_syms) | |
9242 | (*_bfd_error_handler) | |
9243 | (_("%s defined on removed toc entry"), | |
9244 | bfd_elf_sym_name (ibfd, symtab_hdr, sym, NULL)); | |
9245 | do | |
9246 | ++i; | |
9247 | while ((skip[i] & (ref_from_discarded | can_optimize))); | |
9248 | sym->st_value = (bfd_vma) i << 3; | |
9249 | } | |
d62b3684 | 9250 | |
df22d223 AM |
9251 | sym->st_value -= skip[i]; |
9252 | symtab_hdr->contents = (unsigned char *) local_syms; | |
9253 | } | |
c5614fa4 | 9254 | |
854b41e7 | 9255 | /* Adjust any global syms defined in this toc input section. */ |
c5614fa4 AM |
9256 | if (toc_inf.global_toc_syms) |
9257 | { | |
9258 | toc_inf.toc = toc; | |
9259 | toc_inf.skip = skip; | |
9260 | toc_inf.global_toc_syms = FALSE; | |
9261 | elf_link_hash_traverse (elf_hash_table (info), adjust_toc_syms, | |
9262 | &toc_inf); | |
9263 | } | |
854b41e7 AM |
9264 | |
9265 | if (toc->reloc_count != 0) | |
9266 | { | |
d4730f92 | 9267 | Elf_Internal_Shdr *rel_hdr; |
854b41e7 AM |
9268 | Elf_Internal_Rela *wrel; |
9269 | bfd_size_type sz; | |
9270 | ||
854b41e7 | 9271 | /* Remove unused toc relocs, and adjust those we keep. */ |
28be611c AM |
9272 | if (toc_relocs == NULL) |
9273 | toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL, | |
9274 | info->keep_memory); | |
9275 | if (toc_relocs == NULL) | |
9276 | goto error_ret; | |
9277 | ||
425b145b AM |
9278 | wrel = toc_relocs; |
9279 | for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel) | |
ba761f19 AM |
9280 | if ((skip[rel->r_offset >> 3] |
9281 | & (ref_from_discarded | can_optimize)) == 0) | |
854b41e7 AM |
9282 | { |
9283 | wrel->r_offset = rel->r_offset - skip[rel->r_offset >> 3]; | |
9284 | wrel->r_info = rel->r_info; | |
9285 | wrel->r_addend = rel->r_addend; | |
9286 | ++wrel; | |
9287 | } | |
9288 | else if (!dec_dynrel_count (rel->r_info, toc, info, | |
9289 | &local_syms, NULL, NULL)) | |
9290 | goto error_ret; | |
9291 | ||
425b145b AM |
9292 | elf_section_data (toc)->relocs = toc_relocs; |
9293 | toc->reloc_count = wrel - toc_relocs; | |
d4730f92 BS |
9294 | rel_hdr = _bfd_elf_single_rel_hdr (toc); |
9295 | sz = rel_hdr->sh_entsize; | |
9296 | rel_hdr->sh_size = toc->reloc_count * sz; | |
854b41e7 | 9297 | } |
c5614fa4 | 9298 | } |
28be611c AM |
9299 | else if (toc_relocs != NULL |
9300 | && elf_section_data (toc)->relocs != toc_relocs) | |
425b145b | 9301 | free (toc_relocs); |
c5614fa4 AM |
9302 | |
9303 | if (local_syms != NULL | |
9304 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
9305 | { | |
9306 | if (!info->keep_memory) | |
9307 | free (local_syms); | |
9308 | else | |
9309 | symtab_hdr->contents = (unsigned char *) local_syms; | |
9310 | } | |
9311 | free (skip); | |
9312 | } | |
9313 | ||
9314 | return TRUE; | |
9315 | } | |
9316 | ||
1bbe0902 AM |
9317 | /* Return true iff input section I references the TOC using |
9318 | instructions limited to +/-32k offsets. */ | |
9319 | ||
9320 | bfd_boolean | |
9321 | ppc64_elf_has_small_toc_reloc (asection *i) | |
9322 | { | |
9323 | return (is_ppc64_elf (i->owner) | |
9324 | && ppc64_elf_tdata (i->owner)->has_small_toc_reloc); | |
9325 | } | |
9326 | ||
927be08e AM |
9327 | /* Allocate space for one GOT entry. */ |
9328 | ||
9329 | static void | |
9330 | allocate_got (struct elf_link_hash_entry *h, | |
9331 | struct bfd_link_info *info, | |
9332 | struct got_entry *gent) | |
9333 | { | |
9334 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
9335 | bfd_boolean dyn; | |
9336 | struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h; | |
9337 | int entsize = (gent->tls_type & eh->tls_mask & (TLS_GD | TLS_LD) | |
9338 | ? 16 : 8); | |
9339 | int rentsize = (gent->tls_type & eh->tls_mask & TLS_GD | |
9340 | ? 2 : 1) * sizeof (Elf64_External_Rela); | |
9341 | asection *got = ppc64_elf_tdata (gent->owner)->got; | |
9342 | ||
9343 | gent->got.offset = got->size; | |
9344 | got->size += entsize; | |
9345 | ||
9346 | dyn = htab->elf.dynamic_sections_created; | |
19e08130 | 9347 | if (h->type == STT_GNU_IFUNC) |
927be08e | 9348 | { |
33e44f2e | 9349 | htab->elf.irelplt->size += rentsize; |
19e08130 | 9350 | htab->got_reli_size += rentsize; |
927be08e | 9351 | } |
19e08130 AM |
9352 | else if ((info->shared |
9353 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)) | |
9354 | && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
9355 | || h->root.type != bfd_link_hash_undefweak)) | |
927be08e | 9356 | { |
19e08130 | 9357 | asection *relgot = ppc64_elf_tdata (gent->owner)->relgot; |
927be08e | 9358 | relgot->size += rentsize; |
927be08e AM |
9359 | } |
9360 | } | |
9361 | ||
7865406b AM |
9362 | /* This function merges got entries in the same toc group. */ |
9363 | ||
9364 | static void | |
9365 | merge_got_entries (struct got_entry **pent) | |
9366 | { | |
9367 | struct got_entry *ent, *ent2; | |
9368 | ||
9369 | for (ent = *pent; ent != NULL; ent = ent->next) | |
9370 | if (!ent->is_indirect) | |
9371 | for (ent2 = ent->next; ent2 != NULL; ent2 = ent2->next) | |
9372 | if (!ent2->is_indirect | |
9373 | && ent2->addend == ent->addend | |
9374 | && ent2->tls_type == ent->tls_type | |
9375 | && elf_gp (ent2->owner) == elf_gp (ent->owner)) | |
9376 | { | |
9377 | ent2->is_indirect = TRUE; | |
9378 | ent2->got.ent = ent; | |
9379 | } | |
9380 | } | |
9381 | ||
65f38f15 AM |
9382 | /* Allocate space in .plt, .got and associated reloc sections for |
9383 | dynamic relocs. */ | |
5bd4f169 | 9384 | |
b34976b6 | 9385 | static bfd_boolean |
4ce794b7 | 9386 | allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf) |
5bd4f169 | 9387 | { |
65f38f15 AM |
9388 | struct bfd_link_info *info; |
9389 | struct ppc_link_hash_table *htab; | |
5bd4f169 | 9390 | asection *s; |
65f38f15 | 9391 | struct ppc_link_hash_entry *eh; |
6061a67d | 9392 | struct elf_dyn_relocs *p; |
0b8bcf0d | 9393 | struct got_entry **pgent, *gent; |
5bd4f169 | 9394 | |
e92d460e | 9395 | if (h->root.type == bfd_link_hash_indirect) |
b34976b6 | 9396 | return TRUE; |
5bd4f169 | 9397 | |
65f38f15 AM |
9398 | info = (struct bfd_link_info *) inf; |
9399 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
9400 | if (htab == NULL) |
9401 | return FALSE; | |
5bd4f169 | 9402 | |
e054468f AM |
9403 | if ((htab->elf.dynamic_sections_created |
9404 | && h->dynindx != -1 | |
9405 | && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h)) | |
9406 | || h->type == STT_GNU_IFUNC) | |
5bd4f169 | 9407 | { |
411e1bfb AM |
9408 | struct plt_entry *pent; |
9409 | bfd_boolean doneone = FALSE; | |
9410 | for (pent = h->plt.plist; pent != NULL; pent = pent->next) | |
9411 | if (pent->plt.refcount > 0) | |
9412 | { | |
25f23106 AM |
9413 | if (!htab->elf.dynamic_sections_created |
9414 | || h->dynindx == -1) | |
e054468f | 9415 | { |
33e44f2e | 9416 | s = htab->elf.iplt; |
e054468f | 9417 | pent->plt.offset = s->size; |
b9e5796b | 9418 | s->size += PLT_ENTRY_SIZE (htab); |
33e44f2e | 9419 | s = htab->elf.irelplt; |
e054468f AM |
9420 | } |
9421 | else | |
9422 | { | |
9423 | /* If this is the first .plt entry, make room for the special | |
9424 | first entry. */ | |
33e44f2e | 9425 | s = htab->elf.splt; |
e054468f | 9426 | if (s->size == 0) |
b9e5796b | 9427 | s->size += PLT_INITIAL_ENTRY_SIZE (htab); |
e054468f AM |
9428 | |
9429 | pent->plt.offset = s->size; | |
9430 | ||
9431 | /* Make room for this entry. */ | |
b9e5796b | 9432 | s->size += PLT_ENTRY_SIZE (htab); |
e054468f AM |
9433 | |
9434 | /* Make room for the .glink code. */ | |
9435 | s = htab->glink; | |
9436 | if (s->size == 0) | |
9437 | s->size += GLINK_CALL_STUB_SIZE; | |
b9e5796b AM |
9438 | if (htab->opd_abi) |
9439 | { | |
9440 | /* We need bigger stubs past index 32767. */ | |
9441 | if (s->size >= GLINK_CALL_STUB_SIZE + 32768*2*4) | |
9442 | s->size += 4; | |
9443 | s->size += 2*4; | |
9444 | } | |
9445 | else | |
e054468f | 9446 | s->size += 4; |
e054468f AM |
9447 | |
9448 | /* We also need to make an entry in the .rela.plt section. */ | |
33e44f2e | 9449 | s = htab->elf.srelplt; |
e054468f | 9450 | } |
eea6121a | 9451 | s->size += sizeof (Elf64_External_Rela); |
411e1bfb AM |
9452 | doneone = TRUE; |
9453 | } | |
9454 | else | |
9455 | pent->plt.offset = (bfd_vma) -1; | |
9456 | if (!doneone) | |
65f38f15 | 9457 | { |
411e1bfb | 9458 | h->plt.plist = NULL; |
f5385ebf | 9459 | h->needs_plt = 0; |
65f38f15 AM |
9460 | } |
9461 | } | |
9462 | else | |
9463 | { | |
411e1bfb | 9464 | h->plt.plist = NULL; |
f5385ebf | 9465 | h->needs_plt = 0; |
65f38f15 AM |
9466 | } |
9467 | ||
951fd09b AM |
9468 | eh = (struct ppc_link_hash_entry *) h; |
9469 | /* Run through the TLS GD got entries first if we're changing them | |
9470 | to TPREL. */ | |
e7b938ca | 9471 | if ((eh->tls_mask & TLS_TPRELGD) != 0) |
951fd09b AM |
9472 | for (gent = h->got.glist; gent != NULL; gent = gent->next) |
9473 | if (gent->got.refcount > 0 | |
9474 | && (gent->tls_type & TLS_GD) != 0) | |
9475 | { | |
9476 | /* This was a GD entry that has been converted to TPREL. If | |
9477 | there happens to be a TPREL entry we can use that one. */ | |
9478 | struct got_entry *ent; | |
9479 | for (ent = h->got.glist; ent != NULL; ent = ent->next) | |
9480 | if (ent->got.refcount > 0 | |
9481 | && (ent->tls_type & TLS_TPREL) != 0 | |
e717da7e AM |
9482 | && ent->addend == gent->addend |
9483 | && ent->owner == gent->owner) | |
951fd09b AM |
9484 | { |
9485 | gent->got.refcount = 0; | |
9486 | break; | |
9487 | } | |
9488 | ||
9489 | /* If not, then we'll be using our own TPREL entry. */ | |
9490 | if (gent->got.refcount != 0) | |
9491 | gent->tls_type = TLS_TLS | TLS_TPREL; | |
9492 | } | |
9493 | ||
7865406b AM |
9494 | /* Remove any list entry that won't generate a word in the GOT before |
9495 | we call merge_got_entries. Otherwise we risk merging to empty | |
9496 | entries. */ | |
0b8bcf0d AM |
9497 | pgent = &h->got.glist; |
9498 | while ((gent = *pgent) != NULL) | |
411e1bfb | 9499 | if (gent->got.refcount > 0) |
7865406b AM |
9500 | { |
9501 | if ((gent->tls_type & TLS_LD) != 0 | |
9502 | && !h->def_dynamic) | |
9503 | { | |
9504 | ppc64_tlsld_got (gent->owner)->got.refcount += 1; | |
9505 | *pgent = gent->next; | |
9506 | } | |
9507 | else | |
9508 | pgent = &gent->next; | |
9509 | } | |
9510 | else | |
9511 | *pgent = gent->next; | |
9512 | ||
9513 | if (!htab->do_multi_toc) | |
9514 | merge_got_entries (&h->got.glist); | |
9515 | ||
9516 | for (gent = h->got.glist; gent != NULL; gent = gent->next) | |
9517 | if (!gent->is_indirect) | |
411e1bfb AM |
9518 | { |
9519 | /* Make sure this symbol is output as a dynamic symbol. | |
951fd09b AM |
9520 | Undefined weak syms won't yet be marked as dynamic, |
9521 | nor will all TLS symbols. */ | |
411e1bfb | 9522 | if (h->dynindx == -1 |
b099ab9f | 9523 | && !h->forced_local |
25f23106 | 9524 | && h->type != STT_GNU_IFUNC |
b099ab9f | 9525 | && htab->elf.dynamic_sections_created) |
411e1bfb | 9526 | { |
c152c796 | 9527 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
411e1bfb AM |
9528 | return FALSE; |
9529 | } | |
65f38f15 | 9530 | |
0c8d6e5c | 9531 | if (!is_ppc64_elf (gent->owner)) |
927be08e | 9532 | abort (); |
0ffa91dd | 9533 | |
927be08e | 9534 | allocate_got (h, info, gent); |
411e1bfb | 9535 | } |
65f38f15 | 9536 | |
b099ab9f | 9537 | if (eh->dyn_relocs == NULL |
25f23106 | 9538 | || (!htab->elf.dynamic_sections_created |
14b5f73f | 9539 | && h->type != STT_GNU_IFUNC)) |
b34976b6 | 9540 | return TRUE; |
65f38f15 AM |
9541 | |
9542 | /* In the shared -Bsymbolic case, discard space allocated for | |
9543 | dynamic pc-relative relocs against symbols which turn out to be | |
9544 | defined in regular objects. For the normal shared case, discard | |
9545 | space for relocs that have become local due to symbol visibility | |
9546 | changes. */ | |
9547 | ||
9548 | if (info->shared) | |
9549 | { | |
9c7a29a3 | 9550 | /* Relocs that use pc_count are those that appear on a call insn, |
1d483afe | 9551 | or certain REL relocs (see must_be_dyn_reloc) that can be |
9c7a29a3 AM |
9552 | generated via assembly. We want calls to protected symbols to |
9553 | resolve directly to the function rather than going via the plt. | |
9554 | If people want function pointer comparisons to work as expected | |
9555 | then they should avoid writing weird assembly. */ | |
09695f56 | 9556 | if (SYMBOL_CALLS_LOCAL (info, h)) |
65f38f15 | 9557 | { |
6061a67d | 9558 | struct elf_dyn_relocs **pp; |
65f38f15 AM |
9559 | |
9560 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) | |
5bd4f169 | 9561 | { |
65f38f15 AM |
9562 | p->count -= p->pc_count; |
9563 | p->pc_count = 0; | |
9564 | if (p->count == 0) | |
9565 | *pp = p->next; | |
9566 | else | |
9567 | pp = &p->next; | |
5bd4f169 | 9568 | } |
65f38f15 | 9569 | } |
4e795f50 AM |
9570 | |
9571 | /* Also discard relocs on undefined weak syms with non-default | |
9572 | visibility. */ | |
cab87ef9 AM |
9573 | if (eh->dyn_relocs != NULL |
9574 | && h->root.type == bfd_link_hash_undefweak) | |
dfbb6ac9 AM |
9575 | { |
9576 | if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) | |
9577 | eh->dyn_relocs = NULL; | |
9578 | ||
9579 | /* Make sure this symbol is output as a dynamic symbol. | |
9580 | Undefined weak syms won't yet be marked as dynamic. */ | |
9581 | else if (h->dynindx == -1 | |
9582 | && !h->forced_local) | |
9583 | { | |
9584 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) | |
9585 | return FALSE; | |
9586 | } | |
9587 | } | |
65f38f15 | 9588 | } |
25f23106 AM |
9589 | else if (h->type == STT_GNU_IFUNC) |
9590 | { | |
9591 | if (!h->non_got_ref) | |
9592 | eh->dyn_relocs = NULL; | |
9593 | } | |
f4656909 | 9594 | else if (ELIMINATE_COPY_RELOCS) |
65f38f15 AM |
9595 | { |
9596 | /* For the non-shared case, discard space for relocs against | |
9597 | symbols which turn out to need copy relocs or are not | |
9598 | dynamic. */ | |
9599 | ||
f5385ebf | 9600 | if (!h->non_got_ref |
f5385ebf | 9601 | && !h->def_regular) |
65f38f15 AM |
9602 | { |
9603 | /* Make sure this symbol is output as a dynamic symbol. | |
9604 | Undefined weak syms won't yet be marked as dynamic. */ | |
9605 | if (h->dynindx == -1 | |
f5385ebf | 9606 | && !h->forced_local) |
65f38f15 | 9607 | { |
c152c796 | 9608 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 9609 | return FALSE; |
65f38f15 AM |
9610 | } |
9611 | ||
9612 | /* If that succeeded, we know we'll be keeping all the | |
9613 | relocs. */ | |
9614 | if (h->dynindx != -1) | |
9615 | goto keep; | |
9616 | } | |
9617 | ||
9618 | eh->dyn_relocs = NULL; | |
9619 | ||
ec338859 | 9620 | keep: ; |
65f38f15 AM |
9621 | } |
9622 | ||
9623 | /* Finally, allocate space. */ | |
9624 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
9625 | { | |
9626 | asection *sreloc = elf_section_data (p->sec)->sreloc; | |
19e08130 | 9627 | if (eh->elf.type == STT_GNU_IFUNC) |
33e44f2e | 9628 | sreloc = htab->elf.irelplt; |
eea6121a | 9629 | sreloc->size += p->count * sizeof (Elf64_External_Rela); |
65f38f15 AM |
9630 | } |
9631 | ||
b34976b6 | 9632 | return TRUE; |
65f38f15 AM |
9633 | } |
9634 | ||
a345bc8d AM |
9635 | /* Called via elf_link_hash_traverse from ppc64_elf_size_dynamic_sections |
9636 | to set up space for global entry stubs. These are put in glink, | |
9637 | after the branch table. */ | |
65f38f15 | 9638 | |
b34976b6 | 9639 | static bfd_boolean |
a345bc8d | 9640 | size_global_entry_stubs (struct elf_link_hash_entry *h, void *inf) |
65f38f15 | 9641 | { |
a345bc8d AM |
9642 | struct bfd_link_info *info; |
9643 | struct ppc_link_hash_table *htab; | |
9644 | struct plt_entry *pent; | |
9645 | asection *s; | |
65f38f15 | 9646 | |
a345bc8d AM |
9647 | if (h->root.type == bfd_link_hash_indirect) |
9648 | return TRUE; | |
65f38f15 | 9649 | |
a345bc8d AM |
9650 | if (!h->pointer_equality_needed) |
9651 | return TRUE; | |
65f38f15 | 9652 | |
a345bc8d AM |
9653 | if (h->def_regular) |
9654 | return TRUE; | |
65f38f15 | 9655 | |
a345bc8d AM |
9656 | info = inf; |
9657 | htab = ppc_hash_table (info); | |
9658 | if (htab == NULL) | |
9659 | return FALSE; | |
9660 | ||
9661 | s = htab->glink; | |
9662 | for (pent = h->plt.plist; pent != NULL; pent = pent->next) | |
9663 | if (pent->plt.offset != (bfd_vma) -1 | |
9664 | && pent->addend == 0) | |
9665 | { | |
afe397ea AM |
9666 | /* For ELFv2, if this symbol is not defined in a regular file |
9667 | and we are not generating a shared library or pie, then we | |
9668 | need to define the symbol in the executable on a call stub. | |
9669 | This is to avoid text relocations. */ | |
a345bc8d | 9670 | s->size = (s->size + 15) & -16; |
afe397ea AM |
9671 | h->root.u.def.section = s; |
9672 | h->root.u.def.value = s->size; | |
a345bc8d AM |
9673 | s->size += 16; |
9674 | break; | |
9675 | } | |
9676 | return TRUE; | |
9677 | } | |
9678 | ||
9679 | /* Set DF_TEXTREL if we find any dynamic relocs that apply to | |
9680 | read-only sections. */ | |
9681 | ||
9682 | static bfd_boolean | |
9683 | maybe_set_textrel (struct elf_link_hash_entry *h, void *info) | |
9684 | { | |
9685 | if (h->root.type == bfd_link_hash_indirect) | |
9686 | return TRUE; | |
9687 | ||
9688 | if (readonly_dynrelocs (h)) | |
9689 | { | |
9690 | ((struct bfd_link_info *) info)->flags |= DF_TEXTREL; | |
9691 | ||
9692 | /* Not an error, just cut short the traversal. */ | |
9693 | return FALSE; | |
65f38f15 | 9694 | } |
b34976b6 | 9695 | return TRUE; |
65f38f15 AM |
9696 | } |
9697 | ||
9698 | /* Set the sizes of the dynamic sections. */ | |
9699 | ||
b34976b6 | 9700 | static bfd_boolean |
ee67d69a | 9701 | ppc64_elf_size_dynamic_sections (bfd *output_bfd, |
4ce794b7 | 9702 | struct bfd_link_info *info) |
65f38f15 AM |
9703 | { |
9704 | struct ppc_link_hash_table *htab; | |
9705 | bfd *dynobj; | |
9706 | asection *s; | |
b34976b6 | 9707 | bfd_boolean relocs; |
65f38f15 | 9708 | bfd *ibfd; |
7865406b | 9709 | struct got_entry *first_tlsld; |
65f38f15 AM |
9710 | |
9711 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
9712 | if (htab == NULL) |
9713 | return FALSE; | |
9714 | ||
65f38f15 AM |
9715 | dynobj = htab->elf.dynobj; |
9716 | if (dynobj == NULL) | |
9717 | abort (); | |
9718 | ||
9719 | if (htab->elf.dynamic_sections_created) | |
9720 | { | |
9721 | /* Set the contents of the .interp section to the interpreter. */ | |
36af4a4e | 9722 | if (info->executable) |
65f38f15 | 9723 | { |
3d4d4302 | 9724 | s = bfd_get_linker_section (dynobj, ".interp"); |
65f38f15 AM |
9725 | if (s == NULL) |
9726 | abort (); | |
eea6121a | 9727 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; |
65f38f15 AM |
9728 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; |
9729 | } | |
9730 | } | |
9731 | ||
9732 | /* Set up .got offsets for local syms, and space for local dynamic | |
9733 | relocs. */ | |
c72f2fb2 | 9734 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
65f38f15 | 9735 | { |
411e1bfb AM |
9736 | struct got_entry **lgot_ents; |
9737 | struct got_entry **end_lgot_ents; | |
e054468f AM |
9738 | struct plt_entry **local_plt; |
9739 | struct plt_entry **end_local_plt; | |
f961d9dd | 9740 | unsigned char *lgot_masks; |
65f38f15 AM |
9741 | bfd_size_type locsymcount; |
9742 | Elf_Internal_Shdr *symtab_hdr; | |
65f38f15 | 9743 | |
0c8d6e5c | 9744 | if (!is_ppc64_elf (ibfd)) |
65f38f15 AM |
9745 | continue; |
9746 | ||
9747 | for (s = ibfd->sections; s != NULL; s = s->next) | |
9748 | { | |
19e08130 | 9749 | struct ppc_dyn_relocs *p; |
65f38f15 | 9750 | |
6edfbbad | 9751 | for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next) |
65f38f15 | 9752 | { |
ec338859 AM |
9753 | if (!bfd_is_abs_section (p->sec) |
9754 | && bfd_is_abs_section (p->sec->output_section)) | |
9755 | { | |
9756 | /* Input section has been discarded, either because | |
9757 | it is a copy of a linkonce section or due to | |
9758 | linker script /DISCARD/, so we'll be discarding | |
9759 | the relocs too. */ | |
9760 | } | |
248866a8 | 9761 | else if (p->count != 0) |
ec338859 | 9762 | { |
19e08130 AM |
9763 | asection *srel = elf_section_data (p->sec)->sreloc; |
9764 | if (p->ifunc) | |
33e44f2e | 9765 | srel = htab->elf.irelplt; |
eea6121a | 9766 | srel->size += p->count * sizeof (Elf64_External_Rela); |
248866a8 AM |
9767 | if ((p->sec->output_section->flags & SEC_READONLY) != 0) |
9768 | info->flags |= DF_TEXTREL; | |
ec338859 | 9769 | } |
65f38f15 AM |
9770 | } |
9771 | } | |
9772 | ||
411e1bfb AM |
9773 | lgot_ents = elf_local_got_ents (ibfd); |
9774 | if (!lgot_ents) | |
65f38f15 AM |
9775 | continue; |
9776 | ||
0ffa91dd | 9777 | symtab_hdr = &elf_symtab_hdr (ibfd); |
65f38f15 | 9778 | locsymcount = symtab_hdr->sh_info; |
411e1bfb | 9779 | end_lgot_ents = lgot_ents + locsymcount; |
e054468f AM |
9780 | local_plt = (struct plt_entry **) end_lgot_ents; |
9781 | end_local_plt = local_plt + locsymcount; | |
f961d9dd | 9782 | lgot_masks = (unsigned char *) end_local_plt; |
e717da7e | 9783 | s = ppc64_elf_tdata (ibfd)->got; |
e7b938ca | 9784 | for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks) |
65f38f15 | 9785 | { |
0b8bcf0d | 9786 | struct got_entry **pent, *ent; |
411e1bfb | 9787 | |
0b8bcf0d AM |
9788 | pent = lgot_ents; |
9789 | while ((ent = *pent) != NULL) | |
411e1bfb AM |
9790 | if (ent->got.refcount > 0) |
9791 | { | |
e7b938ca | 9792 | if ((ent->tls_type & *lgot_masks & TLS_LD) != 0) |
411e1bfb | 9793 | { |
927be08e | 9794 | ppc64_tlsld_got (ibfd)->got.refcount += 1; |
0b8bcf0d | 9795 | *pent = ent->next; |
411e1bfb AM |
9796 | } |
9797 | else | |
9798 | { | |
19e08130 AM |
9799 | unsigned int ent_size = 8; |
9800 | unsigned int rel_size = sizeof (Elf64_External_Rela); | |
9801 | ||
eea6121a | 9802 | ent->got.offset = s->size; |
e7b938ca | 9803 | if ((ent->tls_type & *lgot_masks & TLS_GD) != 0) |
927be08e | 9804 | { |
19e08130 AM |
9805 | ent_size *= 2; |
9806 | rel_size *= 2; | |
9807 | } | |
9808 | s->size += ent_size; | |
9809 | if ((*lgot_masks & PLT_IFUNC) != 0) | |
9810 | { | |
33e44f2e | 9811 | htab->elf.irelplt->size += rel_size; |
19e08130 AM |
9812 | htab->got_reli_size += rel_size; |
9813 | } | |
9814 | else if (info->shared) | |
9815 | { | |
9816 | asection *srel = ppc64_elf_tdata (ibfd)->relgot; | |
9817 | srel->size += rel_size; | |
927be08e | 9818 | } |
0b8bcf0d | 9819 | pent = &ent->next; |
411e1bfb AM |
9820 | } |
9821 | } | |
9822 | else | |
0b8bcf0d | 9823 | *pent = ent->next; |
65f38f15 | 9824 | } |
e054468f AM |
9825 | |
9826 | /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */ | |
9827 | for (; local_plt < end_local_plt; ++local_plt) | |
9828 | { | |
9829 | struct plt_entry *ent; | |
9830 | ||
9831 | for (ent = *local_plt; ent != NULL; ent = ent->next) | |
9832 | if (ent->plt.refcount > 0) | |
9833 | { | |
33e44f2e | 9834 | s = htab->elf.iplt; |
e054468f | 9835 | ent->plt.offset = s->size; |
b9e5796b | 9836 | s->size += PLT_ENTRY_SIZE (htab); |
e054468f | 9837 | |
33e44f2e | 9838 | htab->elf.irelplt->size += sizeof (Elf64_External_Rela); |
e054468f AM |
9839 | } |
9840 | else | |
9841 | ent->plt.offset = (bfd_vma) -1; | |
9842 | } | |
65f38f15 AM |
9843 | } |
9844 | ||
9845 | /* Allocate global sym .plt and .got entries, and space for global | |
9846 | sym dynamic relocs. */ | |
4ce794b7 | 9847 | elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info); |
a345bc8d AM |
9848 | /* Stash the end of glink branch table. */ |
9849 | if (htab->glink != NULL) | |
9850 | htab->glink->rawsize = htab->glink->size; | |
9851 | ||
9852 | if (!htab->opd_abi && !info->shared) | |
9853 | elf_link_hash_traverse (&htab->elf, size_global_entry_stubs, info); | |
65f38f15 | 9854 | |
7865406b | 9855 | first_tlsld = NULL; |
c72f2fb2 | 9856 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
102890f0 | 9857 | { |
7865406b AM |
9858 | struct got_entry *ent; |
9859 | ||
0c8d6e5c | 9860 | if (!is_ppc64_elf (ibfd)) |
102890f0 AM |
9861 | continue; |
9862 | ||
7865406b AM |
9863 | ent = ppc64_tlsld_got (ibfd); |
9864 | if (ent->got.refcount > 0) | |
102890f0 | 9865 | { |
7865406b | 9866 | if (!htab->do_multi_toc && first_tlsld != NULL) |
102890f0 | 9867 | { |
7865406b AM |
9868 | ent->is_indirect = TRUE; |
9869 | ent->got.ent = first_tlsld; | |
9870 | } | |
9871 | else | |
9872 | { | |
9873 | if (first_tlsld == NULL) | |
9874 | first_tlsld = ent; | |
9875 | s = ppc64_elf_tdata (ibfd)->got; | |
9876 | ent->got.offset = s->size; | |
9877 | ent->owner = ibfd; | |
9878 | s->size += 16; | |
9879 | if (info->shared) | |
9880 | { | |
9881 | asection *srel = ppc64_elf_tdata (ibfd)->relgot; | |
9882 | srel->size += sizeof (Elf64_External_Rela); | |
9883 | } | |
102890f0 AM |
9884 | } |
9885 | } | |
9886 | else | |
7865406b | 9887 | ent->got.offset = (bfd_vma) -1; |
102890f0 AM |
9888 | } |
9889 | ||
65f38f15 AM |
9890 | /* We now have determined the sizes of the various dynamic sections. |
9891 | Allocate memory for them. */ | |
b34976b6 | 9892 | relocs = FALSE; |
65f38f15 AM |
9893 | for (s = dynobj->sections; s != NULL; s = s->next) |
9894 | { | |
9895 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
9896 | continue; | |
9897 | ||
4ce794b7 | 9898 | if (s == htab->brlt || s == htab->relbrlt) |
721956f4 AM |
9899 | /* These haven't been allocated yet; don't strip. */ |
9900 | continue; | |
33e44f2e AM |
9901 | else if (s == htab->elf.sgot |
9902 | || s == htab->elf.splt | |
9903 | || s == htab->elf.iplt | |
c456f082 AM |
9904 | || s == htab->glink |
9905 | || s == htab->dynbss) | |
65f38f15 AM |
9906 | { |
9907 | /* Strip this section if we don't need it; see the | |
9908 | comment below. */ | |
5bd4f169 | 9909 | } |
58d180e8 AM |
9910 | else if (s == htab->glink_eh_frame) |
9911 | { | |
9912 | if (!bfd_is_abs_section (s->output_section)) | |
9913 | /* Not sized yet. */ | |
9914 | continue; | |
9915 | } | |
70cc837d | 9916 | else if (CONST_STRNEQ (s->name, ".rela")) |
5bd4f169 | 9917 | { |
c456f082 | 9918 | if (s->size != 0) |
5bd4f169 | 9919 | { |
33e44f2e | 9920 | if (s != htab->elf.srelplt) |
b34976b6 | 9921 | relocs = TRUE; |
5bd4f169 AM |
9922 | |
9923 | /* We use the reloc_count field as a counter if we need | |
9924 | to copy relocs into the output file. */ | |
9925 | s->reloc_count = 0; | |
9926 | } | |
9927 | } | |
65f38f15 | 9928 | else |
5bd4f169 AM |
9929 | { |
9930 | /* It's not one of our sections, so don't allocate space. */ | |
9931 | continue; | |
9932 | } | |
9933 | ||
eea6121a | 9934 | if (s->size == 0) |
5bd4f169 | 9935 | { |
c456f082 AM |
9936 | /* If we don't need this section, strip it from the |
9937 | output file. This is mostly to handle .rela.bss and | |
9938 | .rela.plt. We must create both sections in | |
9939 | create_dynamic_sections, because they must be created | |
9940 | before the linker maps input sections to output | |
9941 | sections. The linker does that before | |
9942 | adjust_dynamic_symbol is called, and it is that | |
9943 | function which decides whether anything needs to go | |
9944 | into these sections. */ | |
8423293d | 9945 | s->flags |= SEC_EXCLUDE; |
5bd4f169 AM |
9946 | continue; |
9947 | } | |
9948 | ||
c456f082 | 9949 | if ((s->flags & SEC_HAS_CONTENTS) == 0) |
5f333394 AM |
9950 | continue; |
9951 | ||
65f38f15 AM |
9952 | /* Allocate memory for the section contents. We use bfd_zalloc |
9953 | here in case unused entries are not reclaimed before the | |
9954 | section's contents are written out. This should not happen, | |
411e1bfb AM |
9955 | but this way if it does we get a R_PPC64_NONE reloc in .rela |
9956 | sections instead of garbage. | |
9957 | We also rely on the section contents being zero when writing | |
9958 | the GOT. */ | |
eea6121a | 9959 | s->contents = bfd_zalloc (dynobj, s->size); |
65f38f15 | 9960 | if (s->contents == NULL) |
b34976b6 | 9961 | return FALSE; |
5bd4f169 AM |
9962 | } |
9963 | ||
c72f2fb2 | 9964 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
e717da7e | 9965 | { |
0c8d6e5c | 9966 | if (!is_ppc64_elf (ibfd)) |
7b53ace3 AM |
9967 | continue; |
9968 | ||
e717da7e | 9969 | s = ppc64_elf_tdata (ibfd)->got; |
33e44f2e | 9970 | if (s != NULL && s != htab->elf.sgot) |
e717da7e | 9971 | { |
eea6121a | 9972 | if (s->size == 0) |
8423293d | 9973 | s->flags |= SEC_EXCLUDE; |
e717da7e AM |
9974 | else |
9975 | { | |
eea6121a | 9976 | s->contents = bfd_zalloc (ibfd, s->size); |
e717da7e AM |
9977 | if (s->contents == NULL) |
9978 | return FALSE; | |
9979 | } | |
9980 | } | |
9981 | s = ppc64_elf_tdata (ibfd)->relgot; | |
9982 | if (s != NULL) | |
9983 | { | |
eea6121a | 9984 | if (s->size == 0) |
8423293d | 9985 | s->flags |= SEC_EXCLUDE; |
e717da7e AM |
9986 | else |
9987 | { | |
eea6121a | 9988 | s->contents = bfd_zalloc (ibfd, s->size); |
e717da7e AM |
9989 | if (s->contents == NULL) |
9990 | return FALSE; | |
9991 | relocs = TRUE; | |
9992 | s->reloc_count = 0; | |
9993 | } | |
9994 | } | |
9995 | } | |
9996 | ||
e86ce104 | 9997 | if (htab->elf.dynamic_sections_created) |
5bd4f169 | 9998 | { |
e8910a83 AM |
9999 | bfd_boolean tls_opt; |
10000 | ||
5bd4f169 AM |
10001 | /* Add some entries to the .dynamic section. We fill in the |
10002 | values later, in ppc64_elf_finish_dynamic_sections, but we | |
10003 | must add the entries now so that we get the correct size for | |
10004 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
10005 | dynamic linker and used by the debugger. */ | |
dc810e39 | 10006 | #define add_dynamic_entry(TAG, VAL) \ |
5a580b3a | 10007 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) |
dc810e39 | 10008 | |
36af4a4e | 10009 | if (info->executable) |
5bd4f169 | 10010 | { |
dc810e39 | 10011 | if (!add_dynamic_entry (DT_DEBUG, 0)) |
b34976b6 | 10012 | return FALSE; |
5bd4f169 AM |
10013 | } |
10014 | ||
33e44f2e | 10015 | if (htab->elf.splt != NULL && htab->elf.splt->size != 0) |
5bd4f169 | 10016 | { |
dc810e39 AM |
10017 | if (!add_dynamic_entry (DT_PLTGOT, 0) |
10018 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
10019 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
5d1634d7 AM |
10020 | || !add_dynamic_entry (DT_JMPREL, 0) |
10021 | || !add_dynamic_entry (DT_PPC64_GLINK, 0)) | |
b34976b6 | 10022 | return FALSE; |
5bd4f169 AM |
10023 | } |
10024 | ||
ee67d69a | 10025 | if (NO_OPD_RELOCS && abiversion (output_bfd) <= 1) |
19397422 AM |
10026 | { |
10027 | if (!add_dynamic_entry (DT_PPC64_OPD, 0) | |
10028 | || !add_dynamic_entry (DT_PPC64_OPDSZ, 0)) | |
b34976b6 | 10029 | return FALSE; |
19397422 AM |
10030 | } |
10031 | ||
e7d1c40c | 10032 | tls_opt = (!htab->params->no_tls_get_addr_opt |
e8910a83 AM |
10033 | && htab->tls_get_addr_fd != NULL |
10034 | && htab->tls_get_addr_fd->elf.plt.plist != NULL); | |
10035 | if (tls_opt || !htab->opd_abi) | |
10036 | { | |
10037 | if (!add_dynamic_entry (DT_PPC64_OPT, tls_opt ? PPC64_OPT_TLS : 0)) | |
10038 | return FALSE; | |
10039 | } | |
a7f2871e | 10040 | |
5bd4f169 AM |
10041 | if (relocs) |
10042 | { | |
dc810e39 AM |
10043 | if (!add_dynamic_entry (DT_RELA, 0) |
10044 | || !add_dynamic_entry (DT_RELASZ, 0) | |
10045 | || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela))) | |
b34976b6 | 10046 | return FALSE; |
5bd4f169 | 10047 | |
65f38f15 AM |
10048 | /* If any dynamic relocs apply to a read-only section, |
10049 | then we need a DT_TEXTREL entry. */ | |
248866a8 | 10050 | if ((info->flags & DF_TEXTREL) == 0) |
a345bc8d | 10051 | elf_link_hash_traverse (&htab->elf, maybe_set_textrel, info); |
5bd4f169 | 10052 | |
65f38f15 | 10053 | if ((info->flags & DF_TEXTREL) != 0) |
5bd4f169 | 10054 | { |
65f38f15 | 10055 | if (!add_dynamic_entry (DT_TEXTREL, 0)) |
b34976b6 | 10056 | return FALSE; |
5bd4f169 | 10057 | } |
5bd4f169 | 10058 | } |
5bd4f169 | 10059 | } |
65f38f15 | 10060 | #undef add_dynamic_entry |
5bd4f169 | 10061 | |
b34976b6 | 10062 | return TRUE; |
5bd4f169 AM |
10063 | } |
10064 | ||
a345bc8d AM |
10065 | /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */ |
10066 | ||
10067 | static bfd_boolean | |
10068 | ppc64_elf_hash_symbol (struct elf_link_hash_entry *h) | |
10069 | { | |
10070 | if (h->plt.plist != NULL | |
10071 | && !h->def_regular | |
10072 | && !h->pointer_equality_needed) | |
10073 | return FALSE; | |
10074 | ||
10075 | return _bfd_elf_hash_symbol (h); | |
10076 | } | |
10077 | ||
721956f4 | 10078 | /* Determine the type of stub needed, if any, for a call. */ |
5bd4f169 | 10079 | |
4ce794b7 AM |
10080 | static inline enum ppc_stub_type |
10081 | ppc_type_of_stub (asection *input_sec, | |
10082 | const Elf_Internal_Rela *rel, | |
10083 | struct ppc_link_hash_entry **hash, | |
e054468f | 10084 | struct plt_entry **plt_ent, |
6911b7dc AM |
10085 | bfd_vma destination, |
10086 | unsigned long local_off) | |
5bd4f169 | 10087 | { |
721956f4 AM |
10088 | struct ppc_link_hash_entry *h = *hash; |
10089 | bfd_vma location; | |
10090 | bfd_vma branch_offset; | |
10091 | bfd_vma max_branch_offset; | |
4ce794b7 | 10092 | enum elf_ppc64_reloc_type r_type; |
5bd4f169 | 10093 | |
721956f4 AM |
10094 | if (h != NULL) |
10095 | { | |
e054468f | 10096 | struct plt_entry *ent; |
7fe2b9a6 | 10097 | struct ppc_link_hash_entry *fdh = h; |
b31867b6 AM |
10098 | if (h->oh != NULL |
10099 | && h->oh->is_func_descriptor) | |
7b8f6675 AM |
10100 | { |
10101 | fdh = ppc_follow_link (h->oh); | |
10102 | *hash = fdh; | |
10103 | } | |
8387904d | 10104 | |
e054468f AM |
10105 | for (ent = fdh->elf.plt.plist; ent != NULL; ent = ent->next) |
10106 | if (ent->addend == rel->r_addend | |
10107 | && ent->plt.offset != (bfd_vma) -1) | |
10108 | { | |
e054468f AM |
10109 | *plt_ent = ent; |
10110 | return ppc_stub_plt_call; | |
10111 | } | |
5bd4f169 | 10112 | |
7fe2b9a6 AM |
10113 | /* Here, we know we don't have a plt entry. If we don't have a |
10114 | either a defined function descriptor or a defined entry symbol | |
10115 | in a regular object file, then it is pointless trying to make | |
10116 | any other type of stub. */ | |
854b41e7 AM |
10117 | if (!is_static_defined (&fdh->elf) |
10118 | && !is_static_defined (&h->elf)) | |
721956f4 | 10119 | return ppc_stub_none; |
5d1634d7 | 10120 | } |
e054468f AM |
10121 | else if (elf_local_got_ents (input_sec->owner) != NULL) |
10122 | { | |
10123 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (input_sec->owner); | |
10124 | struct plt_entry **local_plt = (struct plt_entry **) | |
10125 | elf_local_got_ents (input_sec->owner) + symtab_hdr->sh_info; | |
10126 | unsigned long r_symndx = ELF64_R_SYM (rel->r_info); | |
10127 | ||
10128 | if (local_plt[r_symndx] != NULL) | |
10129 | { | |
10130 | struct plt_entry *ent; | |
10131 | ||
10132 | for (ent = local_plt[r_symndx]; ent != NULL; ent = ent->next) | |
10133 | if (ent->addend == rel->r_addend | |
10134 | && ent->plt.offset != (bfd_vma) -1) | |
10135 | { | |
10136 | *plt_ent = ent; | |
10137 | return ppc_stub_plt_call; | |
10138 | } | |
10139 | } | |
10140 | } | |
5d1634d7 | 10141 | |
721956f4 AM |
10142 | /* Determine where the call point is. */ |
10143 | location = (input_sec->output_offset | |
10144 | + input_sec->output_section->vma | |
10145 | + rel->r_offset); | |
5d1634d7 | 10146 | |
721956f4 AM |
10147 | branch_offset = destination - location; |
10148 | r_type = ELF64_R_TYPE (rel->r_info); | |
5d1634d7 | 10149 | |
721956f4 AM |
10150 | /* Determine if a long branch stub is needed. */ |
10151 | max_branch_offset = 1 << 25; | |
4ce794b7 | 10152 | if (r_type != R_PPC64_REL24) |
721956f4 | 10153 | max_branch_offset = 1 << 15; |
5d1634d7 | 10154 | |
6911b7dc | 10155 | if (branch_offset + max_branch_offset >= 2 * max_branch_offset - local_off) |
721956f4 AM |
10156 | /* We need a stub. Figure out whether a long_branch or plt_branch |
10157 | is needed later. */ | |
10158 | return ppc_stub_long_branch; | |
5d1634d7 | 10159 | |
721956f4 | 10160 | return ppc_stub_none; |
5d1634d7 AM |
10161 | } |
10162 | ||
794e51c0 AM |
10163 | /* With power7 weakly ordered memory model, it is possible for ld.so |
10164 | to update a plt entry in one thread and have another thread see a | |
10165 | stale zero toc entry. To avoid this we need some sort of acquire | |
10166 | barrier in the call stub. One solution is to make the load of the | |
10167 | toc word seem to appear to depend on the load of the function entry | |
10168 | word. Another solution is to test for r2 being zero, and branch to | |
10169 | the appropriate glink entry if so. | |
10170 | ||
10171 | . fake dep barrier compare | |
71a39c98 AM |
10172 | . ld 12,xxx(2) ld 12,xxx(2) |
10173 | . mtctr 12 mtctr 12 | |
10174 | . xor 11,12,12 ld 2,xxx+8(2) | |
794e51c0 AM |
10175 | . add 2,2,11 cmpldi 2,0 |
10176 | . ld 2,xxx+8(2) bnectr+ | |
10177 | . bctr b <glink_entry> | |
10178 | ||
10179 | The solution involving the compare turns out to be faster, so | |
10180 | that's what we use unless the branch won't reach. */ | |
10181 | ||
10182 | #define ALWAYS_USE_FAKE_DEP 0 | |
10183 | #define ALWAYS_EMIT_R2SAVE 0 | |
5d1634d7 | 10184 | |
5d1634d7 AM |
10185 | #define PPC_LO(v) ((v) & 0xffff) |
10186 | #define PPC_HI(v) (((v) >> 16) & 0xffff) | |
10187 | #define PPC_HA(v) PPC_HI ((v) + 0x8000) | |
10188 | ||
794e51c0 AM |
10189 | static inline unsigned int |
10190 | plt_stub_size (struct ppc_link_hash_table *htab, | |
10191 | struct ppc_stub_hash_entry *stub_entry, | |
10192 | bfd_vma off) | |
10193 | { | |
b9e5796b AM |
10194 | unsigned size = 12; |
10195 | ||
10196 | if (ALWAYS_EMIT_R2SAVE | |
10197 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
10198 | size += 4; | |
10199 | if (PPC_HA (off) != 0) | |
794e51c0 | 10200 | size += 4; |
b9e5796b AM |
10201 | if (htab->opd_abi) |
10202 | { | |
10203 | size += 4; | |
e7d1c40c | 10204 | if (htab->params->plt_static_chain) |
b9e5796b | 10205 | size += 4; |
e7d1c40c | 10206 | if (htab->params->plt_thread_safe) |
b9e5796b | 10207 | size += 8; |
e7d1c40c | 10208 | if (PPC_HA (off + 8 + 8 * htab->params->plt_static_chain) != PPC_HA (off)) |
b9e5796b AM |
10209 | size += 4; |
10210 | } | |
794e51c0 AM |
10211 | if (stub_entry->h != NULL |
10212 | && (stub_entry->h == htab->tls_get_addr_fd | |
10213 | || stub_entry->h == htab->tls_get_addr) | |
e7d1c40c | 10214 | && !htab->params->no_tls_get_addr_opt) |
794e51c0 AM |
10215 | size += 13 * 4; |
10216 | return size; | |
10217 | } | |
10218 | ||
10219 | /* If this stub would cross fewer 2**plt_stub_align boundaries if we align, | |
10220 | then return the padding needed to do so. */ | |
10221 | static inline unsigned int | |
10222 | plt_stub_pad (struct ppc_link_hash_table *htab, | |
10223 | struct ppc_stub_hash_entry *stub_entry, | |
10224 | bfd_vma plt_off) | |
10225 | { | |
e7d1c40c | 10226 | int stub_align = 1 << htab->params->plt_stub_align; |
794e51c0 AM |
10227 | unsigned stub_size = plt_stub_size (htab, stub_entry, plt_off); |
10228 | bfd_vma stub_off = stub_entry->stub_sec->size; | |
10229 | ||
10230 | if (((stub_off + stub_size - 1) & -stub_align) - (stub_off & -stub_align) | |
e05fa0ba | 10231 | > ((stub_size - 1) & -stub_align)) |
794e51c0 AM |
10232 | return stub_align - (stub_off & (stub_align - 1)); |
10233 | return 0; | |
10234 | } | |
10235 | ||
10236 | /* Build a .plt call stub. */ | |
10237 | ||
10238 | static inline bfd_byte * | |
10239 | build_plt_stub (struct ppc_link_hash_table *htab, | |
10240 | struct ppc_stub_hash_entry *stub_entry, | |
10241 | bfd_byte *p, bfd_vma offset, Elf_Internal_Rela *r) | |
10242 | { | |
e7d1c40c | 10243 | bfd *obfd = htab->params->stub_bfd; |
b9e5796b | 10244 | bfd_boolean plt_load_toc = htab->opd_abi; |
e7d1c40c AM |
10245 | bfd_boolean plt_static_chain = htab->params->plt_static_chain; |
10246 | bfd_boolean plt_thread_safe = htab->params->plt_thread_safe; | |
794e51c0 AM |
10247 | bfd_boolean use_fake_dep = plt_thread_safe; |
10248 | bfd_vma cmp_branch_off = 0; | |
10249 | ||
10250 | if (!ALWAYS_USE_FAKE_DEP | |
b9e5796b | 10251 | && plt_load_toc |
794e51c0 AM |
10252 | && plt_thread_safe |
10253 | && !(stub_entry->h != NULL | |
10254 | && (stub_entry->h == htab->tls_get_addr_fd | |
10255 | || stub_entry->h == htab->tls_get_addr) | |
e7d1c40c | 10256 | && !htab->params->no_tls_get_addr_opt)) |
794e51c0 AM |
10257 | { |
10258 | bfd_vma pltoff = stub_entry->plt_ent->plt.offset & ~1; | |
b9e5796b AM |
10259 | bfd_vma pltindex = ((pltoff - PLT_INITIAL_ENTRY_SIZE (htab)) |
10260 | / PLT_ENTRY_SIZE (htab)); | |
794e51c0 AM |
10261 | bfd_vma glinkoff = GLINK_CALL_STUB_SIZE + pltindex * 8; |
10262 | bfd_vma to, from; | |
10263 | ||
68d62958 AM |
10264 | if (pltindex > 32768) |
10265 | glinkoff += (pltindex - 32768) * 4; | |
794e51c0 AM |
10266 | to = (glinkoff |
10267 | + htab->glink->output_offset | |
10268 | + htab->glink->output_section->vma); | |
10269 | from = (p - stub_entry->stub_sec->contents | |
10270 | + 4 * (ALWAYS_EMIT_R2SAVE | |
10271 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
10272 | + 4 * (PPC_HA (offset) != 0) | |
10273 | + 4 * (PPC_HA (offset + 8 + 8 * plt_static_chain) | |
10274 | != PPC_HA (offset)) | |
10275 | + 4 * (plt_static_chain != 0) | |
10276 | + 20 | |
10277 | + stub_entry->stub_sec->output_offset | |
10278 | + stub_entry->stub_sec->output_section->vma); | |
10279 | cmp_branch_off = to - from; | |
10280 | use_fake_dep = cmp_branch_off + (1 << 25) >= (1 << 26); | |
10281 | } | |
10282 | ||
ac2df442 AM |
10283 | if (PPC_HA (offset) != 0) |
10284 | { | |
176a0d42 AM |
10285 | if (r != NULL) |
10286 | { | |
794e51c0 AM |
10287 | if (ALWAYS_EMIT_R2SAVE |
10288 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
10289 | r[0].r_offset += 4; | |
176a0d42 | 10290 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA); |
3b421ab3 | 10291 | r[1].r_offset = r[0].r_offset + 4; |
176a0d42 AM |
10292 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); |
10293 | r[1].r_addend = r[0].r_addend; | |
b9e5796b | 10294 | if (plt_load_toc) |
176a0d42 | 10295 | { |
b9e5796b | 10296 | if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset)) |
c7131b65 | 10297 | { |
b9e5796b AM |
10298 | r[2].r_offset = r[1].r_offset + 4; |
10299 | r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO); | |
10300 | r[2].r_addend = r[0].r_addend; | |
10301 | } | |
10302 | else | |
10303 | { | |
10304 | r[2].r_offset = r[1].r_offset + 8 + 8 * use_fake_dep; | |
10305 | r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); | |
10306 | r[2].r_addend = r[0].r_addend + 8; | |
10307 | if (plt_static_chain) | |
10308 | { | |
10309 | r[3].r_offset = r[2].r_offset + 4; | |
10310 | r[3].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); | |
10311 | r[3].r_addend = r[0].r_addend + 16; | |
10312 | } | |
c7131b65 | 10313 | } |
176a0d42 AM |
10314 | } |
10315 | } | |
794e51c0 AM |
10316 | if (ALWAYS_EMIT_R2SAVE |
10317 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
a078d95a | 10318 | bfd_put_32 (obfd, STD_R2_0R1 + STK_TOC (htab), p), p += 4; |
397998fc AM |
10319 | if (plt_load_toc) |
10320 | { | |
10321 | bfd_put_32 (obfd, ADDIS_R11_R2 | PPC_HA (offset), p), p += 4; | |
10322 | bfd_put_32 (obfd, LD_R12_0R11 | PPC_LO (offset), p), p += 4; | |
10323 | } | |
10324 | else | |
10325 | { | |
10326 | bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (offset), p), p += 4; | |
10327 | bfd_put_32 (obfd, LD_R12_0R12 | PPC_LO (offset), p), p += 4; | |
10328 | } | |
b9e5796b AM |
10329 | if (plt_load_toc |
10330 | && PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset)) | |
ac2df442 | 10331 | { |
71a39c98 | 10332 | bfd_put_32 (obfd, ADDI_R11_R11 | PPC_LO (offset), p), p += 4; |
ac2df442 AM |
10333 | offset = 0; |
10334 | } | |
71a39c98 | 10335 | bfd_put_32 (obfd, MTCTR_R12, p), p += 4; |
b9e5796b | 10336 | if (plt_load_toc) |
794e51c0 | 10337 | { |
b9e5796b AM |
10338 | if (use_fake_dep) |
10339 | { | |
10340 | bfd_put_32 (obfd, XOR_R2_R12_R12, p), p += 4; | |
10341 | bfd_put_32 (obfd, ADD_R11_R11_R2, p), p += 4; | |
10342 | } | |
10343 | bfd_put_32 (obfd, LD_R2_0R11 | PPC_LO (offset + 8), p), p += 4; | |
10344 | if (plt_static_chain) | |
10345 | bfd_put_32 (obfd, LD_R11_0R11 | PPC_LO (offset + 16), p), p += 4; | |
794e51c0 | 10346 | } |
ac2df442 AM |
10347 | } |
10348 | else | |
10349 | { | |
176a0d42 AM |
10350 | if (r != NULL) |
10351 | { | |
794e51c0 AM |
10352 | if (ALWAYS_EMIT_R2SAVE |
10353 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
10354 | r[0].r_offset += 4; | |
176a0d42 | 10355 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); |
b9e5796b | 10356 | if (plt_load_toc) |
176a0d42 | 10357 | { |
b9e5796b | 10358 | if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset)) |
c7131b65 | 10359 | { |
b9e5796b AM |
10360 | r[1].r_offset = r[0].r_offset + 4; |
10361 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16); | |
10362 | r[1].r_addend = r[0].r_addend; | |
10363 | } | |
10364 | else | |
10365 | { | |
10366 | r[1].r_offset = r[0].r_offset + 8 + 8 * use_fake_dep; | |
10367 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); | |
10368 | r[1].r_addend = r[0].r_addend + 8 + 8 * plt_static_chain; | |
10369 | if (plt_static_chain) | |
10370 | { | |
10371 | r[2].r_offset = r[1].r_offset + 4; | |
10372 | r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); | |
10373 | r[2].r_addend = r[0].r_addend + 8; | |
10374 | } | |
c7131b65 | 10375 | } |
176a0d42 AM |
10376 | } |
10377 | } | |
794e51c0 AM |
10378 | if (ALWAYS_EMIT_R2SAVE |
10379 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
a078d95a | 10380 | bfd_put_32 (obfd, STD_R2_0R1 + STK_TOC (htab), p), p += 4; |
71a39c98 | 10381 | bfd_put_32 (obfd, LD_R12_0R2 | PPC_LO (offset), p), p += 4; |
b9e5796b AM |
10382 | if (plt_load_toc |
10383 | && PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset)) | |
ac2df442 AM |
10384 | { |
10385 | bfd_put_32 (obfd, ADDI_R2_R2 | PPC_LO (offset), p), p += 4; | |
10386 | offset = 0; | |
10387 | } | |
71a39c98 | 10388 | bfd_put_32 (obfd, MTCTR_R12, p), p += 4; |
b9e5796b | 10389 | if (plt_load_toc) |
794e51c0 | 10390 | { |
b9e5796b AM |
10391 | if (use_fake_dep) |
10392 | { | |
10393 | bfd_put_32 (obfd, XOR_R11_R12_R12, p), p += 4; | |
10394 | bfd_put_32 (obfd, ADD_R2_R2_R11, p), p += 4; | |
10395 | } | |
10396 | if (plt_static_chain) | |
10397 | bfd_put_32 (obfd, LD_R11_0R2 | PPC_LO (offset + 16), p), p += 4; | |
10398 | bfd_put_32 (obfd, LD_R2_0R2 | PPC_LO (offset + 8), p), p += 4; | |
794e51c0 | 10399 | } |
ac2df442 | 10400 | } |
b9e5796b | 10401 | if (plt_load_toc && plt_thread_safe && !use_fake_dep) |
794e51c0 AM |
10402 | { |
10403 | bfd_put_32 (obfd, CMPLDI_R2_0, p), p += 4; | |
10404 | bfd_put_32 (obfd, BNECTR_P4, p), p += 4; | |
22aa0c7e | 10405 | bfd_put_32 (obfd, B_DOT | (cmp_branch_off & 0x3fffffc), p), p += 4; |
794e51c0 AM |
10406 | } |
10407 | else | |
10408 | bfd_put_32 (obfd, BCTR, p), p += 4; | |
5d1634d7 AM |
10409 | return p; |
10410 | } | |
10411 | ||
a7f2871e AM |
10412 | /* Build a special .plt call stub for __tls_get_addr. */ |
10413 | ||
10414 | #define LD_R11_0R3 0xe9630000 | |
10415 | #define LD_R12_0R3 0xe9830000 | |
10416 | #define MR_R0_R3 0x7c601b78 | |
10417 | #define CMPDI_R11_0 0x2c2b0000 | |
10418 | #define ADD_R3_R12_R13 0x7c6c6a14 | |
10419 | #define BEQLR 0x4d820020 | |
10420 | #define MR_R3_R0 0x7c030378 | |
a7f2871e AM |
10421 | #define STD_R11_0R1 0xf9610000 |
10422 | #define BCTRL 0x4e800421 | |
10423 | #define LD_R11_0R1 0xe9610000 | |
a7f2871e AM |
10424 | #define MTLR_R11 0x7d6803a6 |
10425 | ||
10426 | static inline bfd_byte * | |
794e51c0 AM |
10427 | build_tls_get_addr_stub (struct ppc_link_hash_table *htab, |
10428 | struct ppc_stub_hash_entry *stub_entry, | |
10429 | bfd_byte *p, bfd_vma offset, Elf_Internal_Rela *r) | |
a7f2871e | 10430 | { |
e7d1c40c | 10431 | bfd *obfd = htab->params->stub_bfd; |
794e51c0 | 10432 | |
a7f2871e AM |
10433 | bfd_put_32 (obfd, LD_R11_0R3 + 0, p), p += 4; |
10434 | bfd_put_32 (obfd, LD_R12_0R3 + 8, p), p += 4; | |
10435 | bfd_put_32 (obfd, MR_R0_R3, p), p += 4; | |
10436 | bfd_put_32 (obfd, CMPDI_R11_0, p), p += 4; | |
10437 | bfd_put_32 (obfd, ADD_R3_R12_R13, p), p += 4; | |
10438 | bfd_put_32 (obfd, BEQLR, p), p += 4; | |
10439 | bfd_put_32 (obfd, MR_R3_R0, p), p += 4; | |
10440 | bfd_put_32 (obfd, MFLR_R11, p), p += 4; | |
a078d95a | 10441 | bfd_put_32 (obfd, STD_R11_0R1 + STK_LINKER (htab), p), p += 4; |
a7f2871e AM |
10442 | |
10443 | if (r != NULL) | |
10444 | r[0].r_offset += 9 * 4; | |
794e51c0 | 10445 | p = build_plt_stub (htab, stub_entry, p, offset, r); |
a7f2871e AM |
10446 | bfd_put_32 (obfd, BCTRL, p - 4); |
10447 | ||
a078d95a AM |
10448 | bfd_put_32 (obfd, LD_R11_0R1 + STK_LINKER (htab), p), p += 4; |
10449 | bfd_put_32 (obfd, LD_R2_0R1 + STK_TOC (htab), p), p += 4; | |
a7f2871e AM |
10450 | bfd_put_32 (obfd, MTLR_R11, p), p += 4; |
10451 | bfd_put_32 (obfd, BLR, p), p += 4; | |
10452 | ||
10453 | return p; | |
10454 | } | |
10455 | ||
176a0d42 AM |
10456 | static Elf_Internal_Rela * |
10457 | get_relocs (asection *sec, int count) | |
10458 | { | |
10459 | Elf_Internal_Rela *relocs; | |
10460 | struct bfd_elf_section_data *elfsec_data; | |
10461 | ||
10462 | elfsec_data = elf_section_data (sec); | |
10463 | relocs = elfsec_data->relocs; | |
10464 | if (relocs == NULL) | |
10465 | { | |
10466 | bfd_size_type relsize; | |
10467 | relsize = sec->reloc_count * sizeof (*relocs); | |
10468 | relocs = bfd_alloc (sec->owner, relsize); | |
10469 | if (relocs == NULL) | |
10470 | return NULL; | |
10471 | elfsec_data->relocs = relocs; | |
d4730f92 BS |
10472 | elfsec_data->rela.hdr = bfd_zalloc (sec->owner, |
10473 | sizeof (Elf_Internal_Shdr)); | |
10474 | if (elfsec_data->rela.hdr == NULL) | |
10475 | return NULL; | |
10476 | elfsec_data->rela.hdr->sh_size = (sec->reloc_count | |
10477 | * sizeof (Elf64_External_Rela)); | |
10478 | elfsec_data->rela.hdr->sh_entsize = sizeof (Elf64_External_Rela); | |
176a0d42 AM |
10479 | sec->reloc_count = 0; |
10480 | } | |
10481 | relocs += sec->reloc_count; | |
10482 | sec->reloc_count += count; | |
10483 | return relocs; | |
10484 | } | |
10485 | ||
aa374f67 | 10486 | static bfd_vma |
25f53a85 | 10487 | get_r2off (struct bfd_link_info *info, |
aa374f67 AM |
10488 | struct ppc_stub_hash_entry *stub_entry) |
10489 | { | |
25f53a85 | 10490 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
aa374f67 AM |
10491 | bfd_vma r2off = htab->stub_group[stub_entry->target_section->id].toc_off; |
10492 | ||
10493 | if (r2off == 0) | |
10494 | { | |
10495 | /* Support linking -R objects. Get the toc pointer from the | |
10496 | opd entry. */ | |
10497 | char buf[8]; | |
b9e5796b AM |
10498 | if (!htab->opd_abi) |
10499 | return r2off; | |
aa374f67 AM |
10500 | asection *opd = stub_entry->h->elf.root.u.def.section; |
10501 | bfd_vma opd_off = stub_entry->h->elf.root.u.def.value; | |
10502 | ||
10503 | if (strcmp (opd->name, ".opd") != 0 | |
10504 | || opd->reloc_count != 0) | |
10505 | { | |
bc30df16 | 10506 | info->callbacks->einfo (_("%P: cannot find opd entry toc for `%T'\n"), |
25f53a85 | 10507 | stub_entry->h->elf.root.root.string); |
aa374f67 AM |
10508 | bfd_set_error (bfd_error_bad_value); |
10509 | return 0; | |
10510 | } | |
10511 | if (!bfd_get_section_contents (opd->owner, opd, buf, opd_off + 8, 8)) | |
10512 | return 0; | |
10513 | r2off = bfd_get_64 (opd->owner, buf); | |
25f53a85 | 10514 | r2off -= elf_gp (info->output_bfd); |
aa374f67 AM |
10515 | } |
10516 | r2off -= htab->stub_group[stub_entry->id_sec->id].toc_off; | |
10517 | return r2off; | |
10518 | } | |
10519 | ||
b34976b6 | 10520 | static bfd_boolean |
4ce794b7 | 10521 | ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg) |
5d1634d7 | 10522 | { |
721956f4 AM |
10523 | struct ppc_stub_hash_entry *stub_entry; |
10524 | struct ppc_branch_hash_entry *br_entry; | |
5d1634d7 AM |
10525 | struct bfd_link_info *info; |
10526 | struct ppc_link_hash_table *htab; | |
721956f4 AM |
10527 | bfd_byte *loc; |
10528 | bfd_byte *p; | |
ee75fd95 | 10529 | bfd_vma dest, off; |
721956f4 | 10530 | int size; |
176a0d42 | 10531 | Elf_Internal_Rela *r; |
e054468f | 10532 | asection *plt; |
5d1634d7 | 10533 | |
721956f4 AM |
10534 | /* Massage our args to the form they really have. */ |
10535 | stub_entry = (struct ppc_stub_hash_entry *) gen_entry; | |
4ce794b7 | 10536 | info = in_arg; |
5d1634d7 | 10537 | |
5d1634d7 | 10538 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
10539 | if (htab == NULL) |
10540 | return FALSE; | |
5d1634d7 | 10541 | |
721956f4 | 10542 | /* Make a note of the offset within the stubs for this entry. */ |
eea6121a | 10543 | stub_entry->stub_offset = stub_entry->stub_sec->size; |
97b639ba | 10544 | loc = stub_entry->stub_sec->contents + stub_entry->stub_offset; |
721956f4 | 10545 | |
4ce794b7 | 10546 | htab->stub_count[stub_entry->stub_type - 1] += 1; |
721956f4 | 10547 | switch (stub_entry->stub_type) |
5d1634d7 | 10548 | { |
721956f4 | 10549 | case ppc_stub_long_branch: |
ad8e1ba5 | 10550 | case ppc_stub_long_branch_r2off: |
721956f4 | 10551 | /* Branches are relative. This is where we are going to. */ |
6911b7dc AM |
10552 | dest = (stub_entry->target_value |
10553 | + stub_entry->target_section->output_offset | |
10554 | + stub_entry->target_section->output_section->vma); | |
10555 | dest += PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other); | |
10556 | off = dest; | |
5d1634d7 | 10557 | |
721956f4 AM |
10558 | /* And this is where we are coming from. */ |
10559 | off -= (stub_entry->stub_offset | |
97b639ba AM |
10560 | + stub_entry->stub_sec->output_offset |
10561 | + stub_entry->stub_sec->output_section->vma); | |
e86ce104 | 10562 | |
ac2df442 AM |
10563 | size = 4; |
10564 | if (stub_entry->stub_type == ppc_stub_long_branch_r2off) | |
ad8e1ba5 | 10565 | { |
25f53a85 | 10566 | bfd_vma r2off = get_r2off (info, stub_entry); |
ad8e1ba5 | 10567 | |
aa374f67 AM |
10568 | if (r2off == 0) |
10569 | { | |
10570 | htab->stub_error = TRUE; | |
10571 | return FALSE; | |
10572 | } | |
e7d1c40c | 10573 | bfd_put_32 (htab->params->stub_bfd, STD_R2_0R1 + STK_TOC (htab), loc); |
ad8e1ba5 | 10574 | loc += 4; |
ac2df442 AM |
10575 | size = 12; |
10576 | if (PPC_HA (r2off) != 0) | |
10577 | { | |
10578 | size = 16; | |
e7d1c40c AM |
10579 | bfd_put_32 (htab->params->stub_bfd, |
10580 | ADDIS_R2_R2 | PPC_HA (r2off), loc); | |
ac2df442 AM |
10581 | loc += 4; |
10582 | } | |
e7d1c40c | 10583 | bfd_put_32 (htab->params->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc); |
ad8e1ba5 | 10584 | loc += 4; |
ac2df442 | 10585 | off -= size - 4; |
ad8e1ba5 | 10586 | } |
e7d1c40c | 10587 | bfd_put_32 (htab->params->stub_bfd, B_DOT | (off & 0x3fffffc), loc); |
ad8e1ba5 | 10588 | |
5c3dead3 AM |
10589 | if (off + (1 << 25) >= (bfd_vma) (1 << 26)) |
10590 | { | |
bc30df16 AM |
10591 | info->callbacks->einfo |
10592 | (_("%P: long branch stub `%s' offset overflow\n"), | |
10593 | stub_entry->root.string); | |
5c3dead3 AM |
10594 | htab->stub_error = TRUE; |
10595 | return FALSE; | |
10596 | } | |
ee75fd95 AM |
10597 | |
10598 | if (info->emitrelocations) | |
10599 | { | |
176a0d42 AM |
10600 | r = get_relocs (stub_entry->stub_sec, 1); |
10601 | if (r == NULL) | |
10602 | return FALSE; | |
ee75fd95 AM |
10603 | r->r_offset = loc - stub_entry->stub_sec->contents; |
10604 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL24); | |
10605 | r->r_addend = dest; | |
10606 | if (stub_entry->h != NULL) | |
10607 | { | |
10608 | struct elf_link_hash_entry **hashes; | |
10609 | unsigned long symndx; | |
10610 | struct ppc_link_hash_entry *h; | |
10611 | ||
e7d1c40c | 10612 | hashes = elf_sym_hashes (htab->params->stub_bfd); |
ee75fd95 AM |
10613 | if (hashes == NULL) |
10614 | { | |
10615 | bfd_size_type hsize; | |
10616 | ||
10617 | hsize = (htab->stub_globals + 1) * sizeof (*hashes); | |
e7d1c40c | 10618 | hashes = bfd_zalloc (htab->params->stub_bfd, hsize); |
ee75fd95 AM |
10619 | if (hashes == NULL) |
10620 | return FALSE; | |
e7d1c40c | 10621 | elf_sym_hashes (htab->params->stub_bfd) = hashes; |
ee75fd95 AM |
10622 | htab->stub_globals = 1; |
10623 | } | |
10624 | symndx = htab->stub_globals++; | |
10625 | h = stub_entry->h; | |
10626 | hashes[symndx] = &h->elf; | |
10627 | r->r_info = ELF64_R_INFO (symndx, R_PPC64_REL24); | |
10628 | if (h->oh != NULL && h->oh->is_func) | |
b31867b6 | 10629 | h = ppc_follow_link (h->oh); |
ee75fd95 AM |
10630 | if (h->elf.root.u.def.section != stub_entry->target_section) |
10631 | /* H is an opd symbol. The addend must be zero. */ | |
10632 | r->r_addend = 0; | |
10633 | else | |
10634 | { | |
10635 | off = (h->elf.root.u.def.value | |
10636 | + h->elf.root.u.def.section->output_offset | |
10637 | + h->elf.root.u.def.section->output_section->vma); | |
10638 | r->r_addend -= off; | |
10639 | } | |
10640 | } | |
10641 | } | |
721956f4 | 10642 | break; |
e86ce104 | 10643 | |
721956f4 | 10644 | case ppc_stub_plt_branch: |
ad8e1ba5 | 10645 | case ppc_stub_plt_branch_r2off: |
721956f4 AM |
10646 | br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table, |
10647 | stub_entry->root.string + 9, | |
b34976b6 | 10648 | FALSE, FALSE); |
721956f4 AM |
10649 | if (br_entry == NULL) |
10650 | { | |
8de848d8 | 10651 | info->callbacks->einfo (_("%P: can't find branch stub `%s'\n"), |
25f53a85 | 10652 | stub_entry->root.string); |
b34976b6 AM |
10653 | htab->stub_error = TRUE; |
10654 | return FALSE; | |
721956f4 AM |
10655 | } |
10656 | ||
176a0d42 AM |
10657 | dest = (stub_entry->target_value |
10658 | + stub_entry->target_section->output_offset | |
10659 | + stub_entry->target_section->output_section->vma); | |
6911b7dc AM |
10660 | if (stub_entry->stub_type != ppc_stub_plt_branch_r2off) |
10661 | dest += PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other); | |
721956f4 | 10662 | |
176a0d42 | 10663 | bfd_put_64 (htab->brlt->owner, dest, |
4ce794b7 | 10664 | htab->brlt->contents + br_entry->offset); |
721956f4 | 10665 | |
f94498ff | 10666 | if (br_entry->iter == htab->stub_iteration) |
721956f4 | 10667 | { |
f94498ff | 10668 | br_entry->iter = 0; |
84f5d08e | 10669 | |
f94498ff | 10670 | if (htab->relbrlt != NULL) |
84f5d08e | 10671 | { |
f94498ff AM |
10672 | /* Create a reloc for the branch lookup table entry. */ |
10673 | Elf_Internal_Rela rela; | |
10674 | bfd_byte *rl; | |
10675 | ||
10676 | rela.r_offset = (br_entry->offset | |
10677 | + htab->brlt->output_offset | |
10678 | + htab->brlt->output_section->vma); | |
10679 | rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
176a0d42 | 10680 | rela.r_addend = dest; |
f94498ff AM |
10681 | |
10682 | rl = htab->relbrlt->contents; | |
10683 | rl += (htab->relbrlt->reloc_count++ | |
10684 | * sizeof (Elf64_External_Rela)); | |
10685 | bfd_elf64_swap_reloca_out (htab->relbrlt->owner, &rela, rl); | |
10686 | } | |
10687 | else if (info->emitrelocations) | |
10688 | { | |
176a0d42 AM |
10689 | r = get_relocs (htab->brlt, 1); |
10690 | if (r == NULL) | |
10691 | return FALSE; | |
10692 | /* brlt, being SEC_LINKER_CREATED does not go through the | |
10693 | normal reloc processing. Symbols and offsets are not | |
10694 | translated from input file to output file form, so | |
10695 | set up the offset per the output file. */ | |
f94498ff AM |
10696 | r->r_offset = (br_entry->offset |
10697 | + htab->brlt->output_offset | |
10698 | + htab->brlt->output_section->vma); | |
10699 | r->r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
176a0d42 | 10700 | r->r_addend = dest; |
84f5d08e | 10701 | } |
84f5d08e | 10702 | } |
721956f4 | 10703 | |
176a0d42 AM |
10704 | dest = (br_entry->offset |
10705 | + htab->brlt->output_offset | |
10706 | + htab->brlt->output_section->vma); | |
10707 | ||
10708 | off = (dest | |
4ce794b7 | 10709 | - elf_gp (htab->brlt->output_section->owner) |
ad8e1ba5 | 10710 | - htab->stub_group[stub_entry->id_sec->id].toc_off); |
721956f4 | 10711 | |
ad8e1ba5 | 10712 | if (off + 0x80008000 > 0xffffffff || (off & 7) != 0) |
5d1634d7 | 10713 | { |
25f53a85 | 10714 | info->callbacks->einfo |
bc30df16 | 10715 | (_("%P: linkage table error against `%T'\n"), |
721956f4 | 10716 | stub_entry->root.string); |
5d1634d7 | 10717 | bfd_set_error (bfd_error_bad_value); |
b34976b6 AM |
10718 | htab->stub_error = TRUE; |
10719 | return FALSE; | |
5d1634d7 | 10720 | } |
41bd81ab | 10721 | |
176a0d42 AM |
10722 | if (info->emitrelocations) |
10723 | { | |
10724 | r = get_relocs (stub_entry->stub_sec, 1 + (PPC_HA (off) != 0)); | |
10725 | if (r == NULL) | |
10726 | return FALSE; | |
10727 | r[0].r_offset = loc - stub_entry->stub_sec->contents; | |
7cfbafbc AM |
10728 | if (bfd_big_endian (info->output_bfd)) |
10729 | r[0].r_offset += 2; | |
00f412ee | 10730 | if (stub_entry->stub_type == ppc_stub_plt_branch_r2off) |
176a0d42 AM |
10731 | r[0].r_offset += 4; |
10732 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); | |
10733 | r[0].r_addend = dest; | |
10734 | if (PPC_HA (off) != 0) | |
10735 | { | |
10736 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA); | |
10737 | r[1].r_offset = r[0].r_offset + 4; | |
10738 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); | |
10739 | r[1].r_addend = r[0].r_addend; | |
10740 | } | |
10741 | } | |
10742 | ||
00f412ee | 10743 | if (stub_entry->stub_type != ppc_stub_plt_branch_r2off) |
ad8e1ba5 | 10744 | { |
176a0d42 | 10745 | if (PPC_HA (off) != 0) |
ac2df442 AM |
10746 | { |
10747 | size = 16; | |
e7d1c40c | 10748 | bfd_put_32 (htab->params->stub_bfd, |
397998fc | 10749 | ADDIS_R12_R2 | PPC_HA (off), loc); |
ac2df442 | 10750 | loc += 4; |
e7d1c40c | 10751 | bfd_put_32 (htab->params->stub_bfd, |
397998fc | 10752 | LD_R12_0R12 | PPC_LO (off), loc); |
ac2df442 AM |
10753 | } |
10754 | else | |
10755 | { | |
10756 | size = 12; | |
e7d1c40c AM |
10757 | bfd_put_32 (htab->params->stub_bfd, |
10758 | LD_R12_0R2 | PPC_LO (off), loc); | |
ac2df442 | 10759 | } |
ad8e1ba5 AM |
10760 | } |
10761 | else | |
10762 | { | |
25f53a85 | 10763 | bfd_vma r2off = get_r2off (info, stub_entry); |
aa374f67 | 10764 | |
00f412ee | 10765 | if (r2off == 0 && htab->opd_abi) |
aa374f67 AM |
10766 | { |
10767 | htab->stub_error = TRUE; | |
10768 | return FALSE; | |
10769 | } | |
ad8e1ba5 | 10770 | |
e7d1c40c | 10771 | bfd_put_32 (htab->params->stub_bfd, STD_R2_0R1 + STK_TOC (htab), loc); |
ad8e1ba5 | 10772 | loc += 4; |
00f412ee | 10773 | size = 16; |
176a0d42 | 10774 | if (PPC_HA (off) != 0) |
ac2df442 AM |
10775 | { |
10776 | size += 4; | |
e7d1c40c | 10777 | bfd_put_32 (htab->params->stub_bfd, |
397998fc | 10778 | ADDIS_R12_R2 | PPC_HA (off), loc); |
ac2df442 | 10779 | loc += 4; |
e7d1c40c | 10780 | bfd_put_32 (htab->params->stub_bfd, |
397998fc | 10781 | LD_R12_0R12 | PPC_LO (off), loc); |
ac2df442 AM |
10782 | } |
10783 | else | |
e7d1c40c | 10784 | bfd_put_32 (htab->params->stub_bfd, LD_R12_0R2 | PPC_LO (off), loc); |
ac2df442 AM |
10785 | |
10786 | if (PPC_HA (r2off) != 0) | |
10787 | { | |
10788 | size += 4; | |
00f412ee | 10789 | loc += 4; |
e7d1c40c AM |
10790 | bfd_put_32 (htab->params->stub_bfd, |
10791 | ADDIS_R2_R2 | PPC_HA (r2off), loc); | |
00f412ee AM |
10792 | } |
10793 | if (PPC_LO (r2off) != 0) | |
10794 | { | |
10795 | size += 4; | |
ac2df442 | 10796 | loc += 4; |
e7d1c40c AM |
10797 | bfd_put_32 (htab->params->stub_bfd, |
10798 | ADDI_R2_R2 | PPC_LO (r2off), loc); | |
ac2df442 | 10799 | } |
ad8e1ba5 AM |
10800 | } |
10801 | loc += 4; | |
e7d1c40c | 10802 | bfd_put_32 (htab->params->stub_bfd, MTCTR_R12, loc); |
ad8e1ba5 | 10803 | loc += 4; |
e7d1c40c | 10804 | bfd_put_32 (htab->params->stub_bfd, BCTR, loc); |
721956f4 | 10805 | break; |
5d1634d7 | 10806 | |
721956f4 | 10807 | case ppc_stub_plt_call: |
794e51c0 | 10808 | case ppc_stub_plt_call_r2save: |
e054468f | 10809 | if (stub_entry->h != NULL |
b31867b6 AM |
10810 | && stub_entry->h->is_func_descriptor |
10811 | && stub_entry->h->oh != NULL) | |
c862ae31 | 10812 | { |
b31867b6 AM |
10813 | struct ppc_link_hash_entry *fh = ppc_follow_link (stub_entry->h->oh); |
10814 | ||
10815 | /* If the old-ABI "dot-symbol" is undefined make it weak so | |
10816 | we don't get a link error from RELOC_FOR_GLOBAL_SYMBOL. | |
10817 | FIXME: We used to define the symbol on one of the call | |
10818 | stubs instead, which is why we test symbol section id | |
10819 | against htab->top_id in various places. Likely all | |
10820 | these checks could now disappear. */ | |
10821 | if (fh->elf.root.type == bfd_link_hash_undefined) | |
10822 | fh->elf.root.type = bfd_link_hash_undefweak; | |
9507a174 AM |
10823 | /* Stop undo_symbol_twiddle changing it back to undefined. */ |
10824 | fh->was_undefined = 0; | |
c862ae31 AM |
10825 | } |
10826 | ||
721956f4 | 10827 | /* Now build the stub. */ |
e054468f | 10828 | dest = stub_entry->plt_ent->plt.offset & ~1; |
176a0d42 | 10829 | if (dest >= (bfd_vma) -2) |
721956f4 AM |
10830 | abort (); |
10831 | ||
33e44f2e | 10832 | plt = htab->elf.splt; |
25f23106 AM |
10833 | if (!htab->elf.dynamic_sections_created |
10834 | || stub_entry->h == NULL | |
10835 | || stub_entry->h->elf.dynindx == -1) | |
33e44f2e | 10836 | plt = htab->elf.iplt; |
e054468f AM |
10837 | |
10838 | dest += plt->output_offset + plt->output_section->vma; | |
10839 | ||
10840 | if (stub_entry->h == NULL | |
10841 | && (stub_entry->plt_ent->plt.offset & 1) == 0) | |
10842 | { | |
10843 | Elf_Internal_Rela rela; | |
10844 | bfd_byte *rl; | |
10845 | ||
10846 | rela.r_offset = dest; | |
ee67d69a AM |
10847 | if (htab->opd_abi) |
10848 | rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL); | |
10849 | else | |
10850 | rela.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE); | |
e054468f AM |
10851 | rela.r_addend = (stub_entry->target_value |
10852 | + stub_entry->target_section->output_offset | |
10853 | + stub_entry->target_section->output_section->vma); | |
10854 | ||
33e44f2e AM |
10855 | rl = (htab->elf.irelplt->contents |
10856 | + (htab->elf.irelplt->reloc_count++ | |
25f23106 AM |
10857 | * sizeof (Elf64_External_Rela))); |
10858 | bfd_elf64_swap_reloca_out (info->output_bfd, &rela, rl); | |
e054468f AM |
10859 | stub_entry->plt_ent->plt.offset |= 1; |
10860 | } | |
176a0d42 AM |
10861 | |
10862 | off = (dest | |
e054468f | 10863 | - elf_gp (plt->output_section->owner) |
176a0d42 | 10864 | - htab->stub_group[stub_entry->id_sec->id].toc_off); |
721956f4 | 10865 | |
ad8e1ba5 | 10866 | if (off + 0x80008000 > 0xffffffff || (off & 7) != 0) |
721956f4 | 10867 | { |
25f53a85 | 10868 | info->callbacks->einfo |
bc30df16 | 10869 | (_("%P: linkage table error against `%T'\n"), |
e054468f AM |
10870 | stub_entry->h != NULL |
10871 | ? stub_entry->h->elf.root.root.string | |
10872 | : "<local sym>"); | |
721956f4 | 10873 | bfd_set_error (bfd_error_bad_value); |
b34976b6 AM |
10874 | htab->stub_error = TRUE; |
10875 | return FALSE; | |
721956f4 AM |
10876 | } |
10877 | ||
e7d1c40c | 10878 | if (htab->params->plt_stub_align != 0) |
794e51c0 AM |
10879 | { |
10880 | unsigned pad = plt_stub_pad (htab, stub_entry, off); | |
10881 | ||
10882 | stub_entry->stub_sec->size += pad; | |
10883 | stub_entry->stub_offset = stub_entry->stub_sec->size; | |
10884 | loc += pad; | |
10885 | } | |
10886 | ||
176a0d42 AM |
10887 | r = NULL; |
10888 | if (info->emitrelocations) | |
10889 | { | |
10890 | r = get_relocs (stub_entry->stub_sec, | |
3ba720c7 AM |
10891 | ((PPC_HA (off) != 0) |
10892 | + (htab->opd_abi | |
e7d1c40c | 10893 | ? 2 + (htab->params->plt_static_chain |
3ba720c7 AM |
10894 | && PPC_HA (off + 16) == PPC_HA (off)) |
10895 | : 1))); | |
176a0d42 AM |
10896 | if (r == NULL) |
10897 | return FALSE; | |
10898 | r[0].r_offset = loc - stub_entry->stub_sec->contents; | |
7cfbafbc AM |
10899 | if (bfd_big_endian (info->output_bfd)) |
10900 | r[0].r_offset += 2; | |
176a0d42 AM |
10901 | r[0].r_addend = dest; |
10902 | } | |
a7f2871e AM |
10903 | if (stub_entry->h != NULL |
10904 | && (stub_entry->h == htab->tls_get_addr_fd | |
10905 | || stub_entry->h == htab->tls_get_addr) | |
e7d1c40c | 10906 | && !htab->params->no_tls_get_addr_opt) |
794e51c0 | 10907 | p = build_tls_get_addr_stub (htab, stub_entry, loc, off, r); |
a7f2871e | 10908 | else |
794e51c0 | 10909 | p = build_plt_stub (htab, stub_entry, loc, off, r); |
721956f4 AM |
10910 | size = p - loc; |
10911 | break; | |
10912 | ||
10913 | default: | |
10914 | BFD_FAIL (); | |
b34976b6 | 10915 | return FALSE; |
721956f4 AM |
10916 | } |
10917 | ||
eea6121a | 10918 | stub_entry->stub_sec->size += size; |
97b639ba | 10919 | |
e7d1c40c | 10920 | if (htab->params->emit_stub_syms) |
97b639ba AM |
10921 | { |
10922 | struct elf_link_hash_entry *h; | |
ee75fd95 AM |
10923 | size_t len1, len2; |
10924 | char *name; | |
10925 | const char *const stub_str[] = { "long_branch", | |
10926 | "long_branch_r2off", | |
10927 | "plt_branch", | |
10928 | "plt_branch_r2off", | |
794e51c0 | 10929 | "plt_call", |
ee75fd95 AM |
10930 | "plt_call" }; |
10931 | ||
10932 | len1 = strlen (stub_str[stub_entry->stub_type - 1]); | |
10933 | len2 = strlen (stub_entry->root.string); | |
10934 | name = bfd_malloc (len1 + len2 + 2); | |
10935 | if (name == NULL) | |
10936 | return FALSE; | |
10937 | memcpy (name, stub_entry->root.string, 9); | |
10938 | memcpy (name + 9, stub_str[stub_entry->stub_type - 1], len1); | |
10939 | memcpy (name + len1 + 9, stub_entry->root.string + 8, len2 - 8 + 1); | |
10940 | h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE); | |
97b639ba AM |
10941 | if (h == NULL) |
10942 | return FALSE; | |
10943 | if (h->root.type == bfd_link_hash_new) | |
10944 | { | |
10945 | h->root.type = bfd_link_hash_defined; | |
10946 | h->root.u.def.section = stub_entry->stub_sec; | |
10947 | h->root.u.def.value = stub_entry->stub_offset; | |
f5385ebf AM |
10948 | h->ref_regular = 1; |
10949 | h->def_regular = 1; | |
10950 | h->ref_regular_nonweak = 1; | |
10951 | h->forced_local = 1; | |
10952 | h->non_elf = 0; | |
97b639ba AM |
10953 | } |
10954 | } | |
10955 | ||
b34976b6 | 10956 | return TRUE; |
721956f4 AM |
10957 | } |
10958 | ||
10959 | /* As above, but don't actually build the stub. Just bump offset so | |
10960 | we know stub section sizes, and select plt_branch stubs where | |
10961 | long_branch stubs won't do. */ | |
10962 | ||
b34976b6 | 10963 | static bfd_boolean |
4ce794b7 | 10964 | ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg) |
721956f4 AM |
10965 | { |
10966 | struct ppc_stub_hash_entry *stub_entry; | |
63bc6f6c | 10967 | struct bfd_link_info *info; |
721956f4 AM |
10968 | struct ppc_link_hash_table *htab; |
10969 | bfd_vma off; | |
10970 | int size; | |
10971 | ||
10972 | /* Massage our args to the form they really have. */ | |
10973 | stub_entry = (struct ppc_stub_hash_entry *) gen_entry; | |
63bc6f6c AM |
10974 | info = in_arg; |
10975 | ||
10976 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
10977 | if (htab == NULL) |
10978 | return FALSE; | |
721956f4 | 10979 | |
794e51c0 AM |
10980 | if (stub_entry->stub_type == ppc_stub_plt_call |
10981 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
721956f4 | 10982 | { |
e054468f AM |
10983 | asection *plt; |
10984 | off = stub_entry->plt_ent->plt.offset & ~(bfd_vma) 1; | |
58ac9f71 | 10985 | if (off >= (bfd_vma) -2) |
411e1bfb | 10986 | abort (); |
33e44f2e | 10987 | plt = htab->elf.splt; |
25f23106 AM |
10988 | if (!htab->elf.dynamic_sections_created |
10989 | || stub_entry->h == NULL | |
10990 | || stub_entry->h->elf.dynindx == -1) | |
33e44f2e | 10991 | plt = htab->elf.iplt; |
e054468f AM |
10992 | off += (plt->output_offset |
10993 | + plt->output_section->vma | |
10994 | - elf_gp (plt->output_section->owner) | |
ad8e1ba5 | 10995 | - htab->stub_group[stub_entry->id_sec->id].toc_off); |
721956f4 | 10996 | |
794e51c0 | 10997 | size = plt_stub_size (htab, stub_entry, off); |
e7d1c40c | 10998 | if (htab->params->plt_stub_align) |
794e51c0 | 10999 | size += plt_stub_pad (htab, stub_entry, off); |
176a0d42 AM |
11000 | if (info->emitrelocations) |
11001 | { | |
11002 | stub_entry->stub_sec->reloc_count | |
b9e5796b AM |
11003 | += ((PPC_HA (off) != 0) |
11004 | + (htab->opd_abi | |
e7d1c40c | 11005 | ? 2 + (htab->params->plt_static_chain |
b9e5796b AM |
11006 | && PPC_HA (off + 16) == PPC_HA (off)) |
11007 | : 1)); | |
176a0d42 AM |
11008 | stub_entry->stub_sec->flags |= SEC_RELOC; |
11009 | } | |
721956f4 AM |
11010 | } |
11011 | else | |
11012 | { | |
ad8e1ba5 AM |
11013 | /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off |
11014 | variants. */ | |
ac2df442 | 11015 | bfd_vma r2off = 0; |
6911b7dc | 11016 | bfd_vma local_off = 0; |
ac2df442 | 11017 | |
721956f4 AM |
11018 | off = (stub_entry->target_value |
11019 | + stub_entry->target_section->output_offset | |
11020 | + stub_entry->target_section->output_section->vma); | |
eea6121a | 11021 | off -= (stub_entry->stub_sec->size |
721956f4 AM |
11022 | + stub_entry->stub_sec->output_offset |
11023 | + stub_entry->stub_sec->output_section->vma); | |
11024 | ||
ad8e1ba5 AM |
11025 | /* Reset the stub type from the plt variant in case we now |
11026 | can reach with a shorter stub. */ | |
11027 | if (stub_entry->stub_type >= ppc_stub_plt_branch) | |
11028 | stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch; | |
11029 | ||
11030 | size = 4; | |
11031 | if (stub_entry->stub_type == ppc_stub_long_branch_r2off) | |
11032 | { | |
25f53a85 | 11033 | r2off = get_r2off (info, stub_entry); |
b9e5796b | 11034 | if (r2off == 0 && htab->opd_abi) |
aa374f67 AM |
11035 | { |
11036 | htab->stub_error = TRUE; | |
11037 | return FALSE; | |
11038 | } | |
ac2df442 AM |
11039 | size = 12; |
11040 | if (PPC_HA (r2off) != 0) | |
11041 | size = 16; | |
11042 | off -= size - 4; | |
ad8e1ba5 AM |
11043 | } |
11044 | ||
6911b7dc AM |
11045 | local_off = PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other); |
11046 | ||
b9e5796b AM |
11047 | /* If the branch offset if too big, use a ppc_stub_plt_branch. |
11048 | Do the same for -R objects without function descriptors. */ | |
11049 | if (off + (1 << 25) >= (bfd_vma) (1 << 26) - local_off | |
11050 | || (stub_entry->stub_type == ppc_stub_long_branch_r2off | |
11051 | && r2off == 0)) | |
721956f4 AM |
11052 | { |
11053 | struct ppc_branch_hash_entry *br_entry; | |
11054 | ||
11055 | br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table, | |
11056 | stub_entry->root.string + 9, | |
b34976b6 | 11057 | TRUE, FALSE); |
721956f4 AM |
11058 | if (br_entry == NULL) |
11059 | { | |
8de848d8 | 11060 | info->callbacks->einfo (_("%P: can't build branch stub `%s'\n"), |
25f53a85 | 11061 | stub_entry->root.string); |
b34976b6 AM |
11062 | htab->stub_error = TRUE; |
11063 | return FALSE; | |
721956f4 AM |
11064 | } |
11065 | ||
11066 | if (br_entry->iter != htab->stub_iteration) | |
11067 | { | |
11068 | br_entry->iter = htab->stub_iteration; | |
eea6121a AM |
11069 | br_entry->offset = htab->brlt->size; |
11070 | htab->brlt->size += 8; | |
63bc6f6c | 11071 | |
ee75fd95 | 11072 | if (htab->relbrlt != NULL) |
eea6121a | 11073 | htab->relbrlt->size += sizeof (Elf64_External_Rela); |
84f5d08e AM |
11074 | else if (info->emitrelocations) |
11075 | { | |
11076 | htab->brlt->reloc_count += 1; | |
11077 | htab->brlt->flags |= SEC_RELOC; | |
11078 | } | |
721956f4 | 11079 | } |
ad8e1ba5 AM |
11080 | |
11081 | stub_entry->stub_type += ppc_stub_plt_branch - ppc_stub_long_branch; | |
ac2df442 AM |
11082 | off = (br_entry->offset |
11083 | + htab->brlt->output_offset | |
11084 | + htab->brlt->output_section->vma | |
11085 | - elf_gp (htab->brlt->output_section->owner) | |
11086 | - htab->stub_group[stub_entry->id_sec->id].toc_off); | |
11087 | ||
176a0d42 AM |
11088 | if (info->emitrelocations) |
11089 | { | |
11090 | stub_entry->stub_sec->reloc_count += 1 + (PPC_HA (off) != 0); | |
11091 | stub_entry->stub_sec->flags |= SEC_RELOC; | |
11092 | } | |
11093 | ||
00f412ee | 11094 | if (stub_entry->stub_type != ppc_stub_plt_branch_r2off) |
ac2df442 AM |
11095 | { |
11096 | size = 12; | |
176a0d42 | 11097 | if (PPC_HA (off) != 0) |
ac2df442 AM |
11098 | size = 16; |
11099 | } | |
11100 | else | |
11101 | { | |
00f412ee | 11102 | size = 16; |
176a0d42 | 11103 | if (PPC_HA (off) != 0) |
ac2df442 AM |
11104 | size += 4; |
11105 | ||
11106 | if (PPC_HA (r2off) != 0) | |
11107 | size += 4; | |
00f412ee AM |
11108 | if (PPC_LO (r2off) != 0) |
11109 | size += 4; | |
ac2df442 | 11110 | } |
721956f4 | 11111 | } |
84f5d08e AM |
11112 | else if (info->emitrelocations) |
11113 | { | |
11114 | stub_entry->stub_sec->reloc_count += 1; | |
11115 | stub_entry->stub_sec->flags |= SEC_RELOC; | |
11116 | } | |
721956f4 AM |
11117 | } |
11118 | ||
eea6121a | 11119 | stub_entry->stub_sec->size += size; |
b34976b6 | 11120 | return TRUE; |
721956f4 AM |
11121 | } |
11122 | ||
11123 | /* Set up various things so that we can make a list of input sections | |
11124 | for each output section included in the link. Returns -1 on error, | |
cedb70c5 | 11125 | 0 when no stubs will be needed, and 1 on success. */ |
721956f4 AM |
11126 | |
11127 | int | |
e7d1c40c | 11128 | ppc64_elf_setup_section_lists (struct bfd_link_info *info) |
721956f4 AM |
11129 | { |
11130 | bfd *input_bfd; | |
734b6cf9 | 11131 | int top_id, top_index, id; |
721956f4 | 11132 | asection *section; |
734b6cf9 | 11133 | asection **input_list; |
721956f4 AM |
11134 | bfd_size_type amt; |
11135 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
11136 | ||
4dfe6ac6 NC |
11137 | if (htab == NULL) |
11138 | return -1; | |
4c52953f | 11139 | |
1e2f5b6e | 11140 | /* Find the top input section id. */ |
3d6f9012 | 11141 | for (input_bfd = info->input_bfds, top_id = 3; |
721956f4 | 11142 | input_bfd != NULL; |
c72f2fb2 | 11143 | input_bfd = input_bfd->link.next) |
721956f4 | 11144 | { |
721956f4 AM |
11145 | for (section = input_bfd->sections; |
11146 | section != NULL; | |
11147 | section = section->next) | |
11148 | { | |
11149 | if (top_id < section->id) | |
11150 | top_id = section->id; | |
11151 | } | |
11152 | } | |
721956f4 | 11153 | |
8f3bab57 | 11154 | htab->top_id = top_id; |
721956f4 | 11155 | amt = sizeof (struct map_stub) * (top_id + 1); |
4ce794b7 | 11156 | htab->stub_group = bfd_zmalloc (amt); |
721956f4 AM |
11157 | if (htab->stub_group == NULL) |
11158 | return -1; | |
11159 | ||
3d6f9012 AM |
11160 | /* Set toc_off for com, und, abs and ind sections. */ |
11161 | for (id = 0; id < 3; id++) | |
11162 | htab->stub_group[id].toc_off = TOC_BASE_OFF; | |
721956f4 | 11163 | |
734b6cf9 AM |
11164 | /* We can't use output_bfd->section_count here to find the top output |
11165 | section index as some sections may have been removed, and | |
8423293d | 11166 | strip_excluded_output_sections doesn't renumber the indices. */ |
927be08e | 11167 | for (section = info->output_bfd->sections, top_index = 0; |
734b6cf9 AM |
11168 | section != NULL; |
11169 | section = section->next) | |
11170 | { | |
11171 | if (top_index < section->index) | |
11172 | top_index = section->index; | |
11173 | } | |
11174 | ||
11175 | htab->top_index = top_index; | |
11176 | amt = sizeof (asection *) * (top_index + 1); | |
4ce794b7 | 11177 | input_list = bfd_zmalloc (amt); |
734b6cf9 AM |
11178 | htab->input_list = input_list; |
11179 | if (input_list == NULL) | |
11180 | return -1; | |
11181 | ||
721956f4 AM |
11182 | return 1; |
11183 | } | |
11184 | ||
927be08e AM |
11185 | /* Set up for first pass at multitoc partitioning. */ |
11186 | ||
11187 | void | |
11188 | ppc64_elf_start_multitoc_partition (struct bfd_link_info *info) | |
11189 | { | |
11190 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
11191 | ||
1c865ab2 | 11192 | htab->toc_curr = ppc64_elf_set_toc (info, info->output_bfd); |
927be08e AM |
11193 | htab->toc_bfd = NULL; |
11194 | htab->toc_first_sec = NULL; | |
11195 | } | |
11196 | ||
e717da7e AM |
11197 | /* The linker repeatedly calls this function for each TOC input section |
11198 | and linker generated GOT section. Group input bfds such that the toc | |
927be08e | 11199 | within a group is less than 64k in size. */ |
ad8e1ba5 | 11200 | |
927be08e | 11201 | bfd_boolean |
4ce794b7 | 11202 | ppc64_elf_next_toc_section (struct bfd_link_info *info, asection *isec) |
ad8e1ba5 AM |
11203 | { |
11204 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
d77c8a4b | 11205 | bfd_vma addr, off, limit; |
ad8e1ba5 | 11206 | |
4dfe6ac6 NC |
11207 | if (htab == NULL) |
11208 | return FALSE; | |
11209 | ||
927be08e | 11210 | if (!htab->second_toc_pass) |
4c52953f | 11211 | { |
927be08e | 11212 | /* Keep track of the first .toc or .got section for this input bfd. */ |
a4fd3de5 AM |
11213 | bfd_boolean new_bfd = htab->toc_bfd != isec->owner; |
11214 | ||
11215 | if (new_bfd) | |
bf102f86 AM |
11216 | { |
11217 | htab->toc_bfd = isec->owner; | |
11218 | htab->toc_first_sec = isec; | |
11219 | } | |
927be08e | 11220 | |
bf102f86 AM |
11221 | addr = isec->output_offset + isec->output_section->vma; |
11222 | off = addr - htab->toc_curr; | |
d77c8a4b AM |
11223 | limit = 0x80008000; |
11224 | if (ppc64_elf_tdata (isec->owner)->has_small_toc_reloc) | |
11225 | limit = 0x10000; | |
11226 | if (off + isec->size > limit) | |
bf102f86 AM |
11227 | { |
11228 | addr = (htab->toc_first_sec->output_offset | |
11229 | + htab->toc_first_sec->output_section->vma); | |
11230 | htab->toc_curr = addr; | |
11231 | } | |
99877b66 | 11232 | |
927be08e AM |
11233 | /* toc_curr is the base address of this toc group. Set elf_gp |
11234 | for the input section to be the offset relative to the | |
11235 | output toc base plus 0x8000. Making the input elf_gp an | |
11236 | offset allows us to move the toc as a whole without | |
11237 | recalculating input elf_gp. */ | |
11238 | off = htab->toc_curr - elf_gp (isec->output_section->owner); | |
11239 | off += TOC_BASE_OFF; | |
11240 | ||
11241 | /* Die if someone uses a linker script that doesn't keep input | |
11242 | file .toc and .got together. */ | |
a4fd3de5 AM |
11243 | if (new_bfd |
11244 | && elf_gp (isec->owner) != 0 | |
927be08e AM |
11245 | && elf_gp (isec->owner) != off) |
11246 | return FALSE; | |
11247 | ||
11248 | elf_gp (isec->owner) = off; | |
11249 | return TRUE; | |
4c52953f | 11250 | } |
927be08e AM |
11251 | |
11252 | /* During the second pass toc_first_sec points to the start of | |
11253 | a toc group, and toc_curr is used to track the old elf_gp. | |
11254 | We use toc_bfd to ensure we only look at each bfd once. */ | |
11255 | if (htab->toc_bfd == isec->owner) | |
11256 | return TRUE; | |
11257 | htab->toc_bfd = isec->owner; | |
11258 | ||
11259 | if (htab->toc_first_sec == NULL | |
11260 | || htab->toc_curr != elf_gp (isec->owner)) | |
11261 | { | |
11262 | htab->toc_curr = elf_gp (isec->owner); | |
11263 | htab->toc_first_sec = isec; | |
11264 | } | |
11265 | addr = (htab->toc_first_sec->output_offset | |
11266 | + htab->toc_first_sec->output_section->vma); | |
11267 | off = addr - elf_gp (isec->output_section->owner) + TOC_BASE_OFF; | |
11268 | elf_gp (isec->owner) = off; | |
11269 | ||
11270 | return TRUE; | |
ad8e1ba5 AM |
11271 | } |
11272 | ||
927be08e AM |
11273 | /* Called via elf_link_hash_traverse to merge GOT entries for global |
11274 | symbol H. */ | |
11275 | ||
11276 | static bfd_boolean | |
11277 | merge_global_got (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED) | |
11278 | { | |
11279 | if (h->root.type == bfd_link_hash_indirect) | |
11280 | return TRUE; | |
11281 | ||
927be08e AM |
11282 | merge_got_entries (&h->got.glist); |
11283 | ||
11284 | return TRUE; | |
11285 | } | |
11286 | ||
11287 | /* Called via elf_link_hash_traverse to allocate GOT entries for global | |
11288 | symbol H. */ | |
11289 | ||
11290 | static bfd_boolean | |
11291 | reallocate_got (struct elf_link_hash_entry *h, void *inf) | |
11292 | { | |
11293 | struct got_entry *gent; | |
11294 | ||
11295 | if (h->root.type == bfd_link_hash_indirect) | |
11296 | return TRUE; | |
11297 | ||
927be08e AM |
11298 | for (gent = h->got.glist; gent != NULL; gent = gent->next) |
11299 | if (!gent->is_indirect) | |
11300 | allocate_got (h, (struct bfd_link_info *) inf, gent); | |
11301 | return TRUE; | |
11302 | } | |
11303 | ||
11304 | /* Called on the first multitoc pass after the last call to | |
11305 | ppc64_elf_next_toc_section. This function removes duplicate GOT | |
11306 | entries. */ | |
11307 | ||
11308 | bfd_boolean | |
11309 | ppc64_elf_layout_multitoc (struct bfd_link_info *info) | |
ad8e1ba5 AM |
11310 | { |
11311 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
927be08e AM |
11312 | struct bfd *ibfd, *ibfd2; |
11313 | bfd_boolean done_something; | |
11314 | ||
11315 | htab->multi_toc_needed = htab->toc_curr != elf_gp (info->output_bfd); | |
ad8e1ba5 | 11316 | |
7865406b AM |
11317 | if (!htab->do_multi_toc) |
11318 | return FALSE; | |
11319 | ||
d0fae19d | 11320 | /* Merge global sym got entries within a toc group. */ |
927be08e AM |
11321 | elf_link_hash_traverse (&htab->elf, merge_global_got, info); |
11322 | ||
11323 | /* And tlsld_got. */ | |
c72f2fb2 | 11324 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
927be08e AM |
11325 | { |
11326 | struct got_entry *ent, *ent2; | |
11327 | ||
11328 | if (!is_ppc64_elf (ibfd)) | |
11329 | continue; | |
11330 | ||
11331 | ent = ppc64_tlsld_got (ibfd); | |
11332 | if (!ent->is_indirect | |
11333 | && ent->got.offset != (bfd_vma) -1) | |
11334 | { | |
c72f2fb2 | 11335 | for (ibfd2 = ibfd->link.next; ibfd2 != NULL; ibfd2 = ibfd2->link.next) |
927be08e AM |
11336 | { |
11337 | if (!is_ppc64_elf (ibfd2)) | |
11338 | continue; | |
11339 | ||
11340 | ent2 = ppc64_tlsld_got (ibfd2); | |
11341 | if (!ent2->is_indirect | |
11342 | && ent2->got.offset != (bfd_vma) -1 | |
11343 | && elf_gp (ibfd2) == elf_gp (ibfd)) | |
11344 | { | |
11345 | ent2->is_indirect = TRUE; | |
11346 | ent2->got.ent = ent; | |
11347 | } | |
11348 | } | |
11349 | } | |
11350 | } | |
11351 | ||
11352 | /* Zap sizes of got sections. */ | |
33e44f2e AM |
11353 | htab->elf.irelplt->rawsize = htab->elf.irelplt->size; |
11354 | htab->elf.irelplt->size -= htab->got_reli_size; | |
927be08e AM |
11355 | htab->got_reli_size = 0; |
11356 | ||
c72f2fb2 | 11357 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
927be08e AM |
11358 | { |
11359 | asection *got, *relgot; | |
11360 | ||
11361 | if (!is_ppc64_elf (ibfd)) | |
11362 | continue; | |
11363 | ||
11364 | got = ppc64_elf_tdata (ibfd)->got; | |
11365 | if (got != NULL) | |
11366 | { | |
11367 | got->rawsize = got->size; | |
11368 | got->size = 0; | |
11369 | relgot = ppc64_elf_tdata (ibfd)->relgot; | |
11370 | relgot->rawsize = relgot->size; | |
11371 | relgot->size = 0; | |
11372 | } | |
11373 | } | |
11374 | ||
11375 | /* Now reallocate the got, local syms first. We don't need to | |
11376 | allocate section contents again since we never increase size. */ | |
c72f2fb2 | 11377 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
927be08e AM |
11378 | { |
11379 | struct got_entry **lgot_ents; | |
11380 | struct got_entry **end_lgot_ents; | |
11381 | struct plt_entry **local_plt; | |
11382 | struct plt_entry **end_local_plt; | |
f961d9dd | 11383 | unsigned char *lgot_masks; |
927be08e AM |
11384 | bfd_size_type locsymcount; |
11385 | Elf_Internal_Shdr *symtab_hdr; | |
19e08130 | 11386 | asection *s; |
927be08e AM |
11387 | |
11388 | if (!is_ppc64_elf (ibfd)) | |
11389 | continue; | |
11390 | ||
11391 | lgot_ents = elf_local_got_ents (ibfd); | |
11392 | if (!lgot_ents) | |
11393 | continue; | |
11394 | ||
11395 | symtab_hdr = &elf_symtab_hdr (ibfd); | |
11396 | locsymcount = symtab_hdr->sh_info; | |
11397 | end_lgot_ents = lgot_ents + locsymcount; | |
11398 | local_plt = (struct plt_entry **) end_lgot_ents; | |
11399 | end_local_plt = local_plt + locsymcount; | |
f961d9dd | 11400 | lgot_masks = (unsigned char *) end_local_plt; |
927be08e | 11401 | s = ppc64_elf_tdata (ibfd)->got; |
927be08e AM |
11402 | for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks) |
11403 | { | |
11404 | struct got_entry *ent; | |
11405 | ||
11406 | for (ent = *lgot_ents; ent != NULL; ent = ent->next) | |
d0fae19d | 11407 | { |
19e08130 AM |
11408 | unsigned int ent_size = 8; |
11409 | unsigned int rel_size = sizeof (Elf64_External_Rela); | |
11410 | ||
d0fae19d AM |
11411 | ent->got.offset = s->size; |
11412 | if ((ent->tls_type & *lgot_masks & TLS_GD) != 0) | |
d0fae19d | 11413 | { |
19e08130 AM |
11414 | ent_size *= 2; |
11415 | rel_size *= 2; | |
11416 | } | |
11417 | s->size += ent_size; | |
11418 | if ((*lgot_masks & PLT_IFUNC) != 0) | |
11419 | { | |
33e44f2e | 11420 | htab->elf.irelplt->size += rel_size; |
19e08130 AM |
11421 | htab->got_reli_size += rel_size; |
11422 | } | |
11423 | else if (info->shared) | |
11424 | { | |
11425 | asection *srel = ppc64_elf_tdata (ibfd)->relgot; | |
11426 | srel->size += rel_size; | |
d0fae19d AM |
11427 | } |
11428 | } | |
927be08e AM |
11429 | } |
11430 | } | |
11431 | ||
11432 | elf_link_hash_traverse (&htab->elf, reallocate_got, info); | |
11433 | ||
c72f2fb2 | 11434 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
927be08e AM |
11435 | { |
11436 | struct got_entry *ent; | |
11437 | ||
11438 | if (!is_ppc64_elf (ibfd)) | |
11439 | continue; | |
11440 | ||
11441 | ent = ppc64_tlsld_got (ibfd); | |
11442 | if (!ent->is_indirect | |
11443 | && ent->got.offset != (bfd_vma) -1) | |
11444 | { | |
11445 | asection *s = ppc64_elf_tdata (ibfd)->got; | |
11446 | ent->got.offset = s->size; | |
11447 | s->size += 16; | |
11448 | if (info->shared) | |
11449 | { | |
11450 | asection *srel = ppc64_elf_tdata (ibfd)->relgot; | |
11451 | srel->size += sizeof (Elf64_External_Rela); | |
11452 | } | |
11453 | } | |
11454 | } | |
11455 | ||
33e44f2e | 11456 | done_something = htab->elf.irelplt->rawsize != htab->elf.irelplt->size; |
927be08e | 11457 | if (!done_something) |
c72f2fb2 | 11458 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
927be08e AM |
11459 | { |
11460 | asection *got; | |
11461 | ||
11462 | if (!is_ppc64_elf (ibfd)) | |
11463 | continue; | |
11464 | ||
11465 | got = ppc64_elf_tdata (ibfd)->got; | |
11466 | if (got != NULL) | |
11467 | { | |
11468 | done_something = got->rawsize != got->size; | |
11469 | if (done_something) | |
11470 | break; | |
11471 | } | |
11472 | } | |
11473 | ||
11474 | if (done_something) | |
e7d1c40c | 11475 | (*htab->params->layout_sections_again) (); |
927be08e AM |
11476 | |
11477 | /* Set up for second pass over toc sections to recalculate elf_gp | |
11478 | on input sections. */ | |
11479 | htab->toc_bfd = NULL; | |
11480 | htab->toc_first_sec = NULL; | |
11481 | htab->second_toc_pass = TRUE; | |
11482 | return done_something; | |
11483 | } | |
11484 | ||
11485 | /* Called after second pass of multitoc partitioning. */ | |
11486 | ||
11487 | void | |
11488 | ppc64_elf_finish_multitoc_partition (struct bfd_link_info *info) | |
11489 | { | |
11490 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
11491 | ||
11492 | /* After the second pass, toc_curr tracks the TOC offset used | |
11493 | for code sections below in ppc64_elf_next_input_section. */ | |
3d6f9012 | 11494 | htab->toc_curr = TOC_BASE_OFF; |
ad8e1ba5 AM |
11495 | } |
11496 | ||
9b5ecbd0 AM |
11497 | /* No toc references were found in ISEC. If the code in ISEC makes no |
11498 | calls, then there's no need to use toc adjusting stubs when branching | |
11499 | into ISEC. Actually, indirect calls from ISEC are OK as they will | |
4c52953f AM |
11500 | load r2. Returns -1 on error, 0 for no stub needed, 1 for stub |
11501 | needed, and 2 if a cyclical call-graph was found but no other reason | |
11502 | for a stub was detected. If called from the top level, a return of | |
11503 | 2 means the same as a return of 0. */ | |
9b5ecbd0 AM |
11504 | |
11505 | static int | |
4ce794b7 | 11506 | toc_adjusting_stub_needed (struct bfd_link_info *info, asection *isec) |
9b5ecbd0 | 11507 | { |
9b5ecbd0 | 11508 | int ret; |
70cc837d AM |
11509 | |
11510 | /* Mark this section as checked. */ | |
11511 | isec->call_check_done = 1; | |
9b5ecbd0 | 11512 | |
772119ce AM |
11513 | /* We know none of our code bearing sections will need toc stubs. */ |
11514 | if ((isec->flags & SEC_LINKER_CREATED) != 0) | |
11515 | return 0; | |
11516 | ||
eea6121a | 11517 | if (isec->size == 0) |
082c50f8 AM |
11518 | return 0; |
11519 | ||
4c52953f AM |
11520 | if (isec->output_section == NULL) |
11521 | return 0; | |
11522 | ||
4c52953f | 11523 | ret = 0; |
70cc837d | 11524 | if (isec->reloc_count != 0) |
9b5ecbd0 | 11525 | { |
70cc837d AM |
11526 | Elf_Internal_Rela *relstart, *rel; |
11527 | Elf_Internal_Sym *local_syms; | |
11528 | struct ppc_link_hash_table *htab; | |
2917689a | 11529 | |
70cc837d AM |
11530 | relstart = _bfd_elf_link_read_relocs (isec->owner, isec, NULL, NULL, |
11531 | info->keep_memory); | |
11532 | if (relstart == NULL) | |
11533 | return -1; | |
90aecf7a | 11534 | |
70cc837d AM |
11535 | /* Look for branches to outside of this section. */ |
11536 | local_syms = NULL; | |
11537 | htab = ppc_hash_table (info); | |
11538 | if (htab == NULL) | |
11539 | return -1; | |
4c52953f | 11540 | |
70cc837d | 11541 | for (rel = relstart; rel < relstart + isec->reloc_count; ++rel) |
4c52953f | 11542 | { |
70cc837d AM |
11543 | enum elf_ppc64_reloc_type r_type; |
11544 | unsigned long r_symndx; | |
11545 | struct elf_link_hash_entry *h; | |
11546 | struct ppc_link_hash_entry *eh; | |
11547 | Elf_Internal_Sym *sym; | |
11548 | asection *sym_sec; | |
11549 | struct _opd_sec_data *opd; | |
11550 | bfd_vma sym_value; | |
11551 | bfd_vma dest; | |
11552 | ||
11553 | r_type = ELF64_R_TYPE (rel->r_info); | |
11554 | if (r_type != R_PPC64_REL24 | |
11555 | && r_type != R_PPC64_REL14 | |
11556 | && r_type != R_PPC64_REL14_BRTAKEN | |
11557 | && r_type != R_PPC64_REL14_BRNTAKEN) | |
11558 | continue; | |
4c52953f | 11559 | |
70cc837d AM |
11560 | r_symndx = ELF64_R_SYM (rel->r_info); |
11561 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, r_symndx, | |
11562 | isec->owner)) | |
4c52953f | 11563 | { |
70cc837d AM |
11564 | ret = -1; |
11565 | break; | |
11566 | } | |
4c52953f | 11567 | |
70cc837d AM |
11568 | /* Calls to dynamic lib functions go through a plt call stub |
11569 | that uses r2. */ | |
11570 | eh = (struct ppc_link_hash_entry *) h; | |
11571 | if (eh != NULL | |
11572 | && (eh->elf.plt.plist != NULL | |
11573 | || (eh->oh != NULL | |
11574 | && ppc_follow_link (eh->oh)->elf.plt.plist != NULL))) | |
11575 | { | |
11576 | ret = 1; | |
11577 | break; | |
4c52953f AM |
11578 | } |
11579 | ||
70cc837d AM |
11580 | if (sym_sec == NULL) |
11581 | /* Ignore other undefined symbols. */ | |
4c52953f | 11582 | continue; |
4c52953f | 11583 | |
70cc837d AM |
11584 | /* Assume branches to other sections not included in the |
11585 | link need stubs too, to cover -R and absolute syms. */ | |
11586 | if (sym_sec->output_section == NULL) | |
11587 | { | |
11588 | ret = 1; | |
11589 | break; | |
11590 | } | |
4c52953f | 11591 | |
70cc837d AM |
11592 | if (h == NULL) |
11593 | sym_value = sym->st_value; | |
11594 | else | |
11595 | { | |
11596 | if (h->root.type != bfd_link_hash_defined | |
11597 | && h->root.type != bfd_link_hash_defweak) | |
11598 | abort (); | |
11599 | sym_value = h->root.u.def.value; | |
11600 | } | |
11601 | sym_value += rel->r_addend; | |
4c52953f | 11602 | |
70cc837d AM |
11603 | /* If this branch reloc uses an opd sym, find the code section. */ |
11604 | opd = get_opd_info (sym_sec); | |
11605 | if (opd != NULL) | |
11606 | { | |
11607 | if (h == NULL && opd->adjust != NULL) | |
11608 | { | |
11609 | long adjust; | |
4c52953f | 11610 | |
51aecdc5 | 11611 | adjust = opd->adjust[OPD_NDX (sym->st_value)]; |
70cc837d AM |
11612 | if (adjust == -1) |
11613 | /* Assume deleted functions won't ever be called. */ | |
11614 | continue; | |
11615 | sym_value += adjust; | |
11616 | } | |
4c52953f | 11617 | |
aef36ac1 AM |
11618 | dest = opd_entry_value (sym_sec, sym_value, |
11619 | &sym_sec, NULL, FALSE); | |
70cc837d AM |
11620 | if (dest == (bfd_vma) -1) |
11621 | continue; | |
11622 | } | |
11623 | else | |
11624 | dest = (sym_value | |
11625 | + sym_sec->output_offset | |
11626 | + sym_sec->output_section->vma); | |
4c52953f | 11627 | |
70cc837d AM |
11628 | /* Ignore branch to self. */ |
11629 | if (sym_sec == isec) | |
11630 | continue; | |
4c52953f | 11631 | |
70cc837d AM |
11632 | /* If the called function uses the toc, we need a stub. */ |
11633 | if (sym_sec->has_toc_reloc | |
11634 | || sym_sec->makes_toc_func_call) | |
4c52953f | 11635 | { |
70cc837d | 11636 | ret = 1; |
4c52953f AM |
11637 | break; |
11638 | } | |
70cc837d AM |
11639 | |
11640 | /* Assume any branch that needs a long branch stub might in fact | |
11641 | need a plt_branch stub. A plt_branch stub uses r2. */ | |
11642 | else if (dest - (isec->output_offset | |
11643 | + isec->output_section->vma | |
6911b7dc AM |
11644 | + rel->r_offset) + (1 << 25) |
11645 | >= (2u << 25) - PPC64_LOCAL_ENTRY_OFFSET (h | |
11646 | ? h->other | |
11647 | : sym->st_other)) | |
4c52953f | 11648 | { |
70cc837d AM |
11649 | ret = 1; |
11650 | break; | |
11651 | } | |
11652 | ||
11653 | /* If calling back to a section in the process of being | |
11654 | tested, we can't say for sure that no toc adjusting stubs | |
11655 | are needed, so don't return zero. */ | |
11656 | else if (sym_sec->call_check_in_progress) | |
11657 | ret = 2; | |
11658 | ||
11659 | /* Branches to another section that itself doesn't have any TOC | |
11660 | references are OK. Recursively call ourselves to check. */ | |
11661 | else if (!sym_sec->call_check_done) | |
11662 | { | |
11663 | int recur; | |
11664 | ||
11665 | /* Mark current section as indeterminate, so that other | |
11666 | sections that call back to current won't be marked as | |
11667 | known. */ | |
11668 | isec->call_check_in_progress = 1; | |
11669 | recur = toc_adjusting_stub_needed (info, sym_sec); | |
11670 | isec->call_check_in_progress = 0; | |
11671 | ||
4c52953f AM |
11672 | if (recur != 0) |
11673 | { | |
70cc837d AM |
11674 | ret = recur; |
11675 | if (recur != 2) | |
11676 | break; | |
4c52953f AM |
11677 | } |
11678 | } | |
4c52953f | 11679 | } |
70cc837d AM |
11680 | |
11681 | if (local_syms != NULL | |
11682 | && (elf_symtab_hdr (isec->owner).contents | |
11683 | != (unsigned char *) local_syms)) | |
11684 | free (local_syms); | |
11685 | if (elf_section_data (isec)->relocs != relstart) | |
11686 | free (relstart); | |
9b5ecbd0 AM |
11687 | } |
11688 | ||
70cc837d AM |
11689 | if ((ret & 1) == 0 |
11690 | && isec->map_head.s != NULL | |
11691 | && (strcmp (isec->output_section->name, ".init") == 0 | |
11692 | || strcmp (isec->output_section->name, ".fini") == 0)) | |
11693 | { | |
11694 | if (isec->map_head.s->has_toc_reloc | |
11695 | || isec->map_head.s->makes_toc_func_call) | |
11696 | ret = 1; | |
11697 | else if (!isec->map_head.s->call_check_done) | |
11698 | { | |
11699 | int recur; | |
11700 | isec->call_check_in_progress = 1; | |
11701 | recur = toc_adjusting_stub_needed (info, isec->map_head.s); | |
11702 | isec->call_check_in_progress = 0; | |
11703 | if (recur != 0) | |
11704 | ret = recur; | |
11705 | } | |
11706 | } | |
11707 | ||
11708 | if (ret == 1) | |
11709 | isec->makes_toc_func_call = 1; | |
4c52953f | 11710 | |
9b5ecbd0 AM |
11711 | return ret; |
11712 | } | |
11713 | ||
721956f4 AM |
11714 | /* The linker repeatedly calls this function for each input section, |
11715 | in the order that input sections are linked into output sections. | |
11716 | Build lists of input sections to determine groupings between which | |
11717 | we may insert linker stubs. */ | |
11718 | ||
9b5ecbd0 | 11719 | bfd_boolean |
4ce794b7 | 11720 | ppc64_elf_next_input_section (struct bfd_link_info *info, asection *isec) |
721956f4 AM |
11721 | { |
11722 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
11723 | ||
4dfe6ac6 NC |
11724 | if (htab == NULL) |
11725 | return FALSE; | |
11726 | ||
734b6cf9 AM |
11727 | if ((isec->output_section->flags & SEC_CODE) != 0 |
11728 | && isec->output_section->index <= htab->top_index) | |
721956f4 | 11729 | { |
734b6cf9 | 11730 | asection **list = htab->input_list + isec->output_section->index; |
3d6f9012 | 11731 | /* Steal the link_sec pointer for our list. */ |
721956f4 | 11732 | #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec) |
3d6f9012 AM |
11733 | /* This happens to make the list in reverse order, |
11734 | which is what we want. */ | |
734b6cf9 AM |
11735 | PREV_SEC (isec) = *list; |
11736 | *list = isec; | |
721956f4 | 11737 | } |
ad8e1ba5 | 11738 | |
4c52953f | 11739 | if (htab->multi_toc_needed) |
9b5ecbd0 | 11740 | { |
8b974ba3 AM |
11741 | /* Analyse sections that aren't already flagged as needing a |
11742 | valid toc pointer. Exclude .fixup for the linux kernel. | |
11743 | .fixup contains branches, but only back to the function that | |
11744 | hit an exception. */ | |
11745 | if (!(isec->has_toc_reloc | |
11746 | || (isec->flags & SEC_CODE) == 0 | |
11747 | || strcmp (isec->name, ".fixup") == 0 | |
11748 | || isec->call_check_done)) | |
11749 | { | |
11750 | if (toc_adjusting_stub_needed (info, isec) < 0) | |
6683a28d | 11751 | return FALSE; |
8b974ba3 AM |
11752 | } |
11753 | /* Make all sections use the TOC assigned for this object file. | |
11754 | This will be wrong for pasted sections; We fix that in | |
11755 | check_pasted_section(). */ | |
11756 | if (elf_gp (isec->owner) != 0) | |
11757 | htab->toc_curr = elf_gp (isec->owner); | |
11758 | } | |
11759 | ||
ad8e1ba5 | 11760 | htab->stub_group[isec->id].toc_off = htab->toc_curr; |
9b5ecbd0 | 11761 | return TRUE; |
721956f4 AM |
11762 | } |
11763 | ||
70cc837d AM |
11764 | /* Check that all .init and .fini sections use the same toc, if they |
11765 | have toc relocs. */ | |
11766 | ||
11767 | static bfd_boolean | |
11768 | check_pasted_section (struct bfd_link_info *info, const char *name) | |
11769 | { | |
11770 | asection *o = bfd_get_section_by_name (info->output_bfd, name); | |
11771 | ||
11772 | if (o != NULL) | |
11773 | { | |
11774 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
11775 | bfd_vma toc_off = 0; | |
11776 | asection *i; | |
11777 | ||
11778 | for (i = o->map_head.s; i != NULL; i = i->map_head.s) | |
11779 | if (i->has_toc_reloc) | |
11780 | { | |
11781 | if (toc_off == 0) | |
11782 | toc_off = htab->stub_group[i->id].toc_off; | |
11783 | else if (toc_off != htab->stub_group[i->id].toc_off) | |
11784 | return FALSE; | |
11785 | } | |
6683a28d AM |
11786 | |
11787 | if (toc_off == 0) | |
11788 | for (i = o->map_head.s; i != NULL; i = i->map_head.s) | |
11789 | if (i->makes_toc_func_call) | |
11790 | { | |
11791 | toc_off = htab->stub_group[i->id].toc_off; | |
11792 | break; | |
11793 | } | |
11794 | ||
70cc837d AM |
11795 | /* Make sure the whole pasted function uses the same toc offset. */ |
11796 | if (toc_off != 0) | |
11797 | for (i = o->map_head.s; i != NULL; i = i->map_head.s) | |
11798 | htab->stub_group[i->id].toc_off = toc_off; | |
11799 | } | |
11800 | return TRUE; | |
11801 | } | |
11802 | ||
11803 | bfd_boolean | |
11804 | ppc64_elf_check_init_fini (struct bfd_link_info *info) | |
11805 | { | |
11806 | return (check_pasted_section (info, ".init") | |
11807 | & check_pasted_section (info, ".fini")); | |
11808 | } | |
11809 | ||
721956f4 AM |
11810 | /* See whether we can group stub sections together. Grouping stub |
11811 | sections may result in fewer stubs. More importantly, we need to | |
11812 | put all .init* and .fini* stubs at the beginning of the .init or | |
11813 | .fini output sections respectively, because glibc splits the | |
11814 | _init and _fini functions into multiple parts. Putting a stub in | |
11815 | the middle of a function is not a good idea. */ | |
11816 | ||
11817 | static void | |
4ce794b7 AM |
11818 | group_sections (struct ppc_link_hash_table *htab, |
11819 | bfd_size_type stub_group_size, | |
11820 | bfd_boolean stubs_always_before_branch) | |
721956f4 | 11821 | { |
7c8fe5c4 AM |
11822 | asection **list; |
11823 | bfd_size_type stub14_group_size; | |
11824 | bfd_boolean suppress_size_errors; | |
11825 | ||
11826 | suppress_size_errors = FALSE; | |
0cfb0717 | 11827 | stub14_group_size = stub_group_size >> 10; |
7c8fe5c4 AM |
11828 | if (stub_group_size == 1) |
11829 | { | |
11830 | /* Default values. */ | |
11831 | if (stubs_always_before_branch) | |
11832 | { | |
11833 | stub_group_size = 0x1e00000; | |
11834 | stub14_group_size = 0x7800; | |
11835 | } | |
11836 | else | |
11837 | { | |
11838 | stub_group_size = 0x1c00000; | |
11839 | stub14_group_size = 0x7000; | |
11840 | } | |
11841 | suppress_size_errors = TRUE; | |
11842 | } | |
11843 | ||
11844 | list = htab->input_list + htab->top_index; | |
734b6cf9 | 11845 | do |
721956f4 | 11846 | { |
734b6cf9 AM |
11847 | asection *tail = *list; |
11848 | while (tail != NULL) | |
721956f4 | 11849 | { |
734b6cf9 AM |
11850 | asection *curr; |
11851 | asection *prev; | |
11852 | bfd_size_type total; | |
11853 | bfd_boolean big_sec; | |
11854 | bfd_vma curr_toc; | |
11855 | ||
11856 | curr = tail; | |
eea6121a | 11857 | total = tail->size; |
6bee8834 AM |
11858 | big_sec = total > (ppc64_elf_section_data (tail) != NULL |
11859 | && ppc64_elf_section_data (tail)->has_14bit_branch | |
7c8fe5c4 AM |
11860 | ? stub14_group_size : stub_group_size); |
11861 | if (big_sec && !suppress_size_errors) | |
5c3dead3 AM |
11862 | (*_bfd_error_handler) (_("%B section %A exceeds stub group size"), |
11863 | tail->owner, tail); | |
734b6cf9 AM |
11864 | curr_toc = htab->stub_group[tail->id].toc_off; |
11865 | ||
11866 | while ((prev = PREV_SEC (curr)) != NULL | |
11867 | && ((total += curr->output_offset - prev->output_offset) | |
6bee8834 AM |
11868 | < (ppc64_elf_section_data (prev) != NULL |
11869 | && ppc64_elf_section_data (prev)->has_14bit_branch | |
7c8fe5c4 | 11870 | ? stub14_group_size : stub_group_size)) |
ad8e1ba5 | 11871 | && htab->stub_group[prev->id].toc_off == curr_toc) |
734b6cf9 AM |
11872 | curr = prev; |
11873 | ||
11874 | /* OK, the size from the start of CURR to the end is less | |
11875 | than stub_group_size and thus can be handled by one stub | |
11876 | section. (or the tail section is itself larger than | |
11877 | stub_group_size, in which case we may be toast.) We | |
11878 | should really be keeping track of the total size of stubs | |
11879 | added here, as stubs contribute to the final output | |
11880 | section size. That's a little tricky, and this way will | |
11881 | only break if stubs added make the total size more than | |
11882 | 2^25, ie. for the default stub_group_size, if stubs total | |
11883 | more than 2097152 bytes, or nearly 75000 plt call stubs. */ | |
11884 | do | |
721956f4 AM |
11885 | { |
11886 | prev = PREV_SEC (tail); | |
734b6cf9 | 11887 | /* Set up this stub group. */ |
721956f4 AM |
11888 | htab->stub_group[tail->id].link_sec = curr; |
11889 | } | |
734b6cf9 AM |
11890 | while (tail != curr && (tail = prev) != NULL); |
11891 | ||
11892 | /* But wait, there's more! Input sections up to stub_group_size | |
11893 | bytes before the stub section can be handled by it too. | |
11894 | Don't do this if we have a really large section after the | |
11895 | stubs, as adding more stubs increases the chance that | |
11896 | branches may not reach into the stub section. */ | |
11897 | if (!stubs_always_before_branch && !big_sec) | |
11898 | { | |
11899 | total = 0; | |
11900 | while (prev != NULL | |
11901 | && ((total += tail->output_offset - prev->output_offset) | |
6bee8834 AM |
11902 | < (ppc64_elf_section_data (prev) != NULL |
11903 | && ppc64_elf_section_data (prev)->has_14bit_branch | |
7c8fe5c4 | 11904 | ? stub14_group_size : stub_group_size)) |
734b6cf9 AM |
11905 | && htab->stub_group[prev->id].toc_off == curr_toc) |
11906 | { | |
11907 | tail = prev; | |
11908 | prev = PREV_SEC (tail); | |
11909 | htab->stub_group[tail->id].link_sec = curr; | |
11910 | } | |
11911 | } | |
11912 | tail = prev; | |
721956f4 AM |
11913 | } |
11914 | } | |
734b6cf9 AM |
11915 | while (list-- != htab->input_list); |
11916 | free (htab->input_list); | |
721956f4 AM |
11917 | #undef PREV_SEC |
11918 | } | |
11919 | ||
58d180e8 AM |
11920 | static const unsigned char glink_eh_frame_cie[] = |
11921 | { | |
11922 | 0, 0, 0, 16, /* length. */ | |
11923 | 0, 0, 0, 0, /* id. */ | |
11924 | 1, /* CIE version. */ | |
11925 | 'z', 'R', 0, /* Augmentation string. */ | |
11926 | 4, /* Code alignment. */ | |
11927 | 0x78, /* Data alignment. */ | |
11928 | 65, /* RA reg. */ | |
11929 | 1, /* Augmentation size. */ | |
11930 | DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding. */ | |
da44f4e5 AM |
11931 | DW_CFA_def_cfa, 1, 0, /* def_cfa: r1 offset 0. */ |
11932 | 0, 0, 0, 0 | |
58d180e8 AM |
11933 | }; |
11934 | ||
d969d15f AM |
11935 | /* Stripping output sections is normally done before dynamic section |
11936 | symbols have been allocated. This function is called later, and | |
11937 | handles cases like htab->brlt which is mapped to its own output | |
11938 | section. */ | |
11939 | ||
11940 | static void | |
11941 | maybe_strip_output (struct bfd_link_info *info, asection *isec) | |
11942 | { | |
11943 | if (isec->size == 0 | |
11944 | && isec->output_section->size == 0 | |
53d8967a | 11945 | && !(isec->output_section->flags & SEC_KEEP) |
d969d15f AM |
11946 | && !bfd_section_removed_from_list (info->output_bfd, |
11947 | isec->output_section) | |
11948 | && elf_section_data (isec->output_section)->dynindx == 0) | |
11949 | { | |
11950 | isec->output_section->flags |= SEC_EXCLUDE; | |
11951 | bfd_section_list_remove (info->output_bfd, isec->output_section); | |
11952 | info->output_bfd->section_count--; | |
11953 | } | |
11954 | } | |
11955 | ||
721956f4 AM |
11956 | /* Determine and set the size of the stub section for a final link. |
11957 | ||
11958 | The basic idea here is to examine all the relocations looking for | |
11959 | PC-relative calls to a target that is unreachable with a "bl" | |
11960 | instruction. */ | |
11961 | ||
b34976b6 | 11962 | bfd_boolean |
e7d1c40c | 11963 | ppc64_elf_size_stubs (struct bfd_link_info *info) |
721956f4 AM |
11964 | { |
11965 | bfd_size_type stub_group_size; | |
b34976b6 | 11966 | bfd_boolean stubs_always_before_branch; |
721956f4 AM |
11967 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
11968 | ||
4dfe6ac6 NC |
11969 | if (htab == NULL) |
11970 | return FALSE; | |
11971 | ||
e7d1c40c AM |
11972 | if (htab->params->plt_thread_safe == -1 && !info->executable) |
11973 | htab->params->plt_thread_safe = 1; | |
b9e5796b | 11974 | if (!htab->opd_abi) |
e7d1c40c AM |
11975 | htab->params->plt_thread_safe = 0; |
11976 | else if (htab->params->plt_thread_safe == -1) | |
794e51c0 | 11977 | { |
e2458743 | 11978 | static const char *const thread_starter[] = |
794e51c0 AM |
11979 | { |
11980 | "pthread_create", | |
11981 | /* libstdc++ */ | |
11982 | "_ZNSt6thread15_M_start_threadESt10shared_ptrINS_10_Impl_baseEE", | |
11983 | /* librt */ | |
11984 | "aio_init", "aio_read", "aio_write", "aio_fsync", "lio_listio", | |
11985 | "mq_notify", "create_timer", | |
11986 | /* libanl */ | |
11987 | "getaddrinfo_a", | |
11988 | /* libgomp */ | |
2300b5a1 | 11989 | "GOMP_parallel", |
794e51c0 | 11990 | "GOMP_parallel_start", |
2300b5a1 | 11991 | "GOMP_parallel_loop_static", |
794e51c0 | 11992 | "GOMP_parallel_loop_static_start", |
2300b5a1 | 11993 | "GOMP_parallel_loop_dynamic", |
794e51c0 | 11994 | "GOMP_parallel_loop_dynamic_start", |
2300b5a1 | 11995 | "GOMP_parallel_loop_guided", |
794e51c0 | 11996 | "GOMP_parallel_loop_guided_start", |
2300b5a1 | 11997 | "GOMP_parallel_loop_runtime", |
794e51c0 | 11998 | "GOMP_parallel_loop_runtime_start", |
2300b5a1 | 11999 | "GOMP_parallel_sections", |
68ffbac6 | 12000 | "GOMP_parallel_sections_start", |
f9dffbf0 AM |
12001 | /* libgo */ |
12002 | "__go_go", | |
794e51c0 AM |
12003 | }; |
12004 | unsigned i; | |
12005 | ||
12006 | for (i = 0; i < sizeof (thread_starter)/ sizeof (thread_starter[0]); i++) | |
12007 | { | |
12008 | struct elf_link_hash_entry *h; | |
12009 | h = elf_link_hash_lookup (&htab->elf, thread_starter[i], | |
12010 | FALSE, FALSE, TRUE); | |
e7d1c40c AM |
12011 | htab->params->plt_thread_safe = h != NULL && h->ref_regular; |
12012 | if (htab->params->plt_thread_safe) | |
794e51c0 AM |
12013 | break; |
12014 | } | |
12015 | } | |
e7d1c40c AM |
12016 | stubs_always_before_branch = htab->params->group_size < 0; |
12017 | if (htab->params->group_size < 0) | |
12018 | stub_group_size = -htab->params->group_size; | |
721956f4 | 12019 | else |
e7d1c40c | 12020 | stub_group_size = htab->params->group_size; |
721956f4 AM |
12021 | |
12022 | group_sections (htab, stub_group_size, stubs_always_before_branch); | |
12023 | ||
721956f4 AM |
12024 | while (1) |
12025 | { | |
12026 | bfd *input_bfd; | |
12027 | unsigned int bfd_indx; | |
12028 | asection *stub_sec; | |
721956f4 AM |
12029 | |
12030 | htab->stub_iteration += 1; | |
721956f4 AM |
12031 | |
12032 | for (input_bfd = info->input_bfds, bfd_indx = 0; | |
12033 | input_bfd != NULL; | |
c72f2fb2 | 12034 | input_bfd = input_bfd->link.next, bfd_indx++) |
721956f4 AM |
12035 | { |
12036 | Elf_Internal_Shdr *symtab_hdr; | |
12037 | asection *section; | |
6cdc0ccc | 12038 | Elf_Internal_Sym *local_syms = NULL; |
721956f4 | 12039 | |
0c8d6e5c | 12040 | if (!is_ppc64_elf (input_bfd)) |
67f93c31 AM |
12041 | continue; |
12042 | ||
721956f4 | 12043 | /* We'll need the symbol table in a second. */ |
0ffa91dd | 12044 | symtab_hdr = &elf_symtab_hdr (input_bfd); |
721956f4 AM |
12045 | if (symtab_hdr->sh_info == 0) |
12046 | continue; | |
12047 | ||
721956f4 AM |
12048 | /* Walk over each section attached to the input bfd. */ |
12049 | for (section = input_bfd->sections; | |
12050 | section != NULL; | |
12051 | section = section->next) | |
12052 | { | |
721956f4 | 12053 | Elf_Internal_Rela *internal_relocs, *irelaend, *irela; |
721956f4 AM |
12054 | |
12055 | /* If there aren't any relocs, then there's nothing more | |
12056 | to do. */ | |
12057 | if ((section->flags & SEC_RELOC) == 0 | |
12c0f757 AM |
12058 | || (section->flags & SEC_ALLOC) == 0 |
12059 | || (section->flags & SEC_LOAD) == 0 | |
12060 | || (section->flags & SEC_CODE) == 0 | |
721956f4 AM |
12061 | || section->reloc_count == 0) |
12062 | continue; | |
12063 | ||
12064 | /* If this section is a link-once section that will be | |
12065 | discarded, then don't create any stubs. */ | |
12066 | if (section->output_section == NULL | |
927be08e | 12067 | || section->output_section->owner != info->output_bfd) |
721956f4 AM |
12068 | continue; |
12069 | ||
1e2f5b6e AM |
12070 | /* Get the relocs. */ |
12071 | internal_relocs | |
4ce794b7 | 12072 | = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL, |
45d6a902 | 12073 | info->keep_memory); |
721956f4 | 12074 | if (internal_relocs == NULL) |
1e2f5b6e | 12075 | goto error_ret_free_local; |
721956f4 AM |
12076 | |
12077 | /* Now examine each relocation. */ | |
12078 | irela = internal_relocs; | |
12079 | irelaend = irela + section->reloc_count; | |
12080 | for (; irela < irelaend; irela++) | |
12081 | { | |
4ce794b7 AM |
12082 | enum elf_ppc64_reloc_type r_type; |
12083 | unsigned int r_indx; | |
721956f4 AM |
12084 | enum ppc_stub_type stub_type; |
12085 | struct ppc_stub_hash_entry *stub_entry; | |
8387904d | 12086 | asection *sym_sec, *code_sec; |
e054468f | 12087 | bfd_vma sym_value, code_value; |
721956f4 | 12088 | bfd_vma destination; |
6911b7dc | 12089 | unsigned long local_off; |
8843416a | 12090 | bfd_boolean ok_dest; |
721956f4 | 12091 | struct ppc_link_hash_entry *hash; |
8387904d | 12092 | struct ppc_link_hash_entry *fdh; |
411e1bfb AM |
12093 | struct elf_link_hash_entry *h; |
12094 | Elf_Internal_Sym *sym; | |
721956f4 AM |
12095 | char *stub_name; |
12096 | const asection *id_sec; | |
74f0fb50 | 12097 | struct _opd_sec_data *opd; |
e054468f | 12098 | struct plt_entry *plt_ent; |
721956f4 AM |
12099 | |
12100 | r_type = ELF64_R_TYPE (irela->r_info); | |
12101 | r_indx = ELF64_R_SYM (irela->r_info); | |
12102 | ||
4ce794b7 | 12103 | if (r_type >= R_PPC64_max) |
721956f4 AM |
12104 | { |
12105 | bfd_set_error (bfd_error_bad_value); | |
6cdc0ccc | 12106 | goto error_ret_free_internal; |
721956f4 AM |
12107 | } |
12108 | ||
12109 | /* Only look for stubs on branch instructions. */ | |
4ce794b7 AM |
12110 | if (r_type != R_PPC64_REL24 |
12111 | && r_type != R_PPC64_REL14 | |
12112 | && r_type != R_PPC64_REL14_BRTAKEN | |
12113 | && r_type != R_PPC64_REL14_BRNTAKEN) | |
721956f4 AM |
12114 | continue; |
12115 | ||
12116 | /* Now determine the call target, its name, value, | |
12117 | section. */ | |
411e1bfb AM |
12118 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, |
12119 | r_indx, input_bfd)) | |
12120 | goto error_ret_free_internal; | |
12121 | hash = (struct ppc_link_hash_entry *) h; | |
12122 | ||
8843416a | 12123 | ok_dest = FALSE; |
8387904d | 12124 | fdh = NULL; |
7fe2b9a6 | 12125 | sym_value = 0; |
411e1bfb | 12126 | if (hash == NULL) |
721956f4 | 12127 | { |
411e1bfb | 12128 | sym_value = sym->st_value; |
8843416a | 12129 | ok_dest = TRUE; |
721956f4 | 12130 | } |
7fe2b9a6 AM |
12131 | else if (hash->elf.root.type == bfd_link_hash_defined |
12132 | || hash->elf.root.type == bfd_link_hash_defweak) | |
12133 | { | |
12134 | sym_value = hash->elf.root.u.def.value; | |
12135 | if (sym_sec->output_section != NULL) | |
12136 | ok_dest = TRUE; | |
12137 | } | |
12138 | else if (hash->elf.root.type == bfd_link_hash_undefweak | |
12139 | || hash->elf.root.type == bfd_link_hash_undefined) | |
721956f4 | 12140 | { |
99877b66 | 12141 | /* Recognise an old ABI func code entry sym, and |
7fe2b9a6 AM |
12142 | use the func descriptor sym instead if it is |
12143 | defined. */ | |
ceb1f1ef | 12144 | if (hash->elf.root.root.string[0] == '.' |
b31867b6 | 12145 | && (fdh = lookup_fdh (hash, htab)) != NULL) |
8387904d | 12146 | { |
8387904d AM |
12147 | if (fdh->elf.root.type == bfd_link_hash_defined |
12148 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
12149 | { | |
12150 | sym_sec = fdh->elf.root.u.def.section; | |
12151 | sym_value = fdh->elf.root.u.def.value; | |
12152 | if (sym_sec->output_section != NULL) | |
12153 | ok_dest = TRUE; | |
12154 | } | |
99877b66 AM |
12155 | else |
12156 | fdh = NULL; | |
8387904d | 12157 | } |
7fe2b9a6 AM |
12158 | } |
12159 | else | |
12160 | { | |
12161 | bfd_set_error (bfd_error_bad_value); | |
12162 | goto error_ret_free_internal; | |
721956f4 AM |
12163 | } |
12164 | ||
8843416a | 12165 | destination = 0; |
6911b7dc | 12166 | local_off = 0; |
8843416a AM |
12167 | if (ok_dest) |
12168 | { | |
12169 | sym_value += irela->r_addend; | |
12170 | destination = (sym_value | |
12171 | + sym_sec->output_offset | |
12172 | + sym_sec->output_section->vma); | |
6911b7dc AM |
12173 | local_off = PPC64_LOCAL_ENTRY_OFFSET (hash |
12174 | ? hash->elf.other | |
12175 | : sym->st_other); | |
8843416a AM |
12176 | } |
12177 | ||
8387904d | 12178 | code_sec = sym_sec; |
e054468f | 12179 | code_value = sym_value; |
74f0fb50 AM |
12180 | opd = get_opd_info (sym_sec); |
12181 | if (opd != NULL) | |
8387904d AM |
12182 | { |
12183 | bfd_vma dest; | |
12184 | ||
74f0fb50 | 12185 | if (hash == NULL && opd->adjust != NULL) |
8387904d | 12186 | { |
51aecdc5 | 12187 | long adjust = opd->adjust[OPD_NDX (sym_value)]; |
8387904d AM |
12188 | if (adjust == -1) |
12189 | continue; | |
e054468f | 12190 | code_value += adjust; |
8387904d AM |
12191 | sym_value += adjust; |
12192 | } | |
12193 | dest = opd_entry_value (sym_sec, sym_value, | |
aef36ac1 | 12194 | &code_sec, &code_value, FALSE); |
8387904d AM |
12195 | if (dest != (bfd_vma) -1) |
12196 | { | |
12197 | destination = dest; | |
12198 | if (fdh != NULL) | |
12199 | { | |
12200 | /* Fixup old ABI sym to point at code | |
12201 | entry. */ | |
99877b66 | 12202 | hash->elf.root.type = bfd_link_hash_defweak; |
8387904d | 12203 | hash->elf.root.u.def.section = code_sec; |
e054468f | 12204 | hash->elf.root.u.def.value = code_value; |
8387904d AM |
12205 | } |
12206 | } | |
12207 | } | |
12208 | ||
721956f4 | 12209 | /* Determine what (if any) linker stub is needed. */ |
e054468f | 12210 | plt_ent = NULL; |
721956f4 | 12211 | stub_type = ppc_type_of_stub (section, irela, &hash, |
6911b7dc AM |
12212 | &plt_ent, destination, |
12213 | local_off); | |
ad8e1ba5 AM |
12214 | |
12215 | if (stub_type != ppc_stub_plt_call) | |
12216 | { | |
12217 | /* Check whether we need a TOC adjusting stub. | |
12218 | Since the linker pastes together pieces from | |
12219 | different object files when creating the | |
12220 | _init and _fini functions, it may be that a | |
12221 | call to what looks like a local sym is in | |
12222 | fact a call needing a TOC adjustment. */ | |
8387904d AM |
12223 | if (code_sec != NULL |
12224 | && code_sec->output_section != NULL | |
12225 | && (htab->stub_group[code_sec->id].toc_off | |
9b5ecbd0 | 12226 | != htab->stub_group[section->id].toc_off) |
4c52953f AM |
12227 | && (code_sec->has_toc_reloc |
12228 | || code_sec->makes_toc_func_call)) | |
ad8e1ba5 AM |
12229 | stub_type = ppc_stub_long_branch_r2off; |
12230 | } | |
12231 | ||
721956f4 AM |
12232 | if (stub_type == ppc_stub_none) |
12233 | continue; | |
12234 | ||
411e1bfb AM |
12235 | /* __tls_get_addr calls might be eliminated. */ |
12236 | if (stub_type != ppc_stub_plt_call | |
12237 | && hash != NULL | |
8387904d AM |
12238 | && (hash == htab->tls_get_addr |
12239 | || hash == htab->tls_get_addr_fd) | |
411e1bfb AM |
12240 | && section->has_tls_reloc |
12241 | && irela != internal_relocs) | |
12242 | { | |
12243 | /* Get tls info. */ | |
f961d9dd | 12244 | unsigned char *tls_mask; |
411e1bfb | 12245 | |
3a71aa26 | 12246 | if (!get_tls_mask (&tls_mask, NULL, NULL, &local_syms, |
411e1bfb AM |
12247 | irela - 1, input_bfd)) |
12248 | goto error_ret_free_internal; | |
e7b938ca | 12249 | if (*tls_mask != 0) |
411e1bfb AM |
12250 | continue; |
12251 | } | |
12252 | ||
3b421ab3 AM |
12253 | if (stub_type == ppc_stub_plt_call |
12254 | && irela + 1 < irelaend | |
12255 | && irela[1].r_offset == irela->r_offset + 4 | |
794e51c0 AM |
12256 | && ELF64_R_TYPE (irela[1].r_info) == R_PPC64_TOCSAVE) |
12257 | { | |
12258 | if (!tocsave_find (htab, INSERT, | |
12259 | &local_syms, irela + 1, input_bfd)) | |
12260 | goto error_ret_free_internal; | |
12261 | } | |
12262 | else if (stub_type == ppc_stub_plt_call) | |
12263 | stub_type = ppc_stub_plt_call_r2save; | |
3b421ab3 | 12264 | |
721956f4 AM |
12265 | /* Support for grouping stub sections. */ |
12266 | id_sec = htab->stub_group[section->id].link_sec; | |
12267 | ||
12268 | /* Get the name of this stub. */ | |
12269 | stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela); | |
12270 | if (!stub_name) | |
12271 | goto error_ret_free_internal; | |
12272 | ||
12273 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, | |
b34976b6 | 12274 | stub_name, FALSE, FALSE); |
721956f4 AM |
12275 | if (stub_entry != NULL) |
12276 | { | |
12277 | /* The proper stub has already been created. */ | |
12278 | free (stub_name); | |
794e51c0 AM |
12279 | if (stub_type == ppc_stub_plt_call_r2save) |
12280 | stub_entry->stub_type = stub_type; | |
721956f4 AM |
12281 | continue; |
12282 | } | |
12283 | ||
25f53a85 | 12284 | stub_entry = ppc_add_stub (stub_name, section, info); |
721956f4 AM |
12285 | if (stub_entry == NULL) |
12286 | { | |
12287 | free (stub_name); | |
6cdc0ccc AM |
12288 | error_ret_free_internal: |
12289 | if (elf_section_data (section)->relocs == NULL) | |
12290 | free (internal_relocs); | |
12291 | error_ret_free_local: | |
12292 | if (local_syms != NULL | |
12293 | && (symtab_hdr->contents | |
12294 | != (unsigned char *) local_syms)) | |
12295 | free (local_syms); | |
b34976b6 | 12296 | return FALSE; |
721956f4 AM |
12297 | } |
12298 | ||
ad8e1ba5 | 12299 | stub_entry->stub_type = stub_type; |
794e51c0 AM |
12300 | if (stub_type != ppc_stub_plt_call |
12301 | && stub_type != ppc_stub_plt_call_r2save) | |
e054468f AM |
12302 | { |
12303 | stub_entry->target_value = code_value; | |
12304 | stub_entry->target_section = code_sec; | |
12305 | } | |
12306 | else | |
12307 | { | |
12308 | stub_entry->target_value = sym_value; | |
12309 | stub_entry->target_section = sym_sec; | |
12310 | } | |
721956f4 | 12311 | stub_entry->h = hash; |
e054468f | 12312 | stub_entry->plt_ent = plt_ent; |
6911b7dc | 12313 | stub_entry->other = hash ? hash->elf.other : sym->st_other; |
ee75fd95 AM |
12314 | |
12315 | if (stub_entry->h != NULL) | |
12316 | htab->stub_globals += 1; | |
721956f4 AM |
12317 | } |
12318 | ||
12319 | /* We're done with the internal relocs, free them. */ | |
6cdc0ccc | 12320 | if (elf_section_data (section)->relocs != internal_relocs) |
1e2f5b6e | 12321 | free (internal_relocs); |
721956f4 | 12322 | } |
6cdc0ccc AM |
12323 | |
12324 | if (local_syms != NULL | |
12325 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
12326 | { | |
12327 | if (!info->keep_memory) | |
12328 | free (local_syms); | |
12329 | else | |
12330 | symtab_hdr->contents = (unsigned char *) local_syms; | |
12331 | } | |
721956f4 AM |
12332 | } |
12333 | ||
5c3dead3 | 12334 | /* We may have added some stubs. Find out the new size of the |
721956f4 | 12335 | stub sections. */ |
e7d1c40c | 12336 | for (stub_sec = htab->params->stub_bfd->sections; |
721956f4 AM |
12337 | stub_sec != NULL; |
12338 | stub_sec = stub_sec->next) | |
e717da7e | 12339 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) |
ee75fd95 | 12340 | { |
5c3dead3 | 12341 | stub_sec->rawsize = stub_sec->size; |
ee75fd95 AM |
12342 | stub_sec->size = 0; |
12343 | stub_sec->reloc_count = 0; | |
84f5d08e | 12344 | stub_sec->flags &= ~SEC_RELOC; |
ee75fd95 | 12345 | } |
eea6121a AM |
12346 | |
12347 | htab->brlt->size = 0; | |
84f5d08e AM |
12348 | htab->brlt->reloc_count = 0; |
12349 | htab->brlt->flags &= ~SEC_RELOC; | |
ee75fd95 | 12350 | if (htab->relbrlt != NULL) |
eea6121a | 12351 | htab->relbrlt->size = 0; |
721956f4 | 12352 | |
63bc6f6c | 12353 | bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, info); |
721956f4 | 12354 | |
176a0d42 AM |
12355 | if (info->emitrelocations |
12356 | && htab->glink != NULL && htab->glink->size != 0) | |
12357 | { | |
12358 | htab->glink->reloc_count = 1; | |
12359 | htab->glink->flags |= SEC_RELOC; | |
12360 | } | |
12361 | ||
58d180e8 AM |
12362 | if (htab->glink_eh_frame != NULL |
12363 | && !bfd_is_abs_section (htab->glink_eh_frame->output_section) | |
9a2a56cc | 12364 | && htab->glink_eh_frame->output_section->size != 0) |
58d180e8 | 12365 | { |
4bbe044a | 12366 | size_t size = 0, align; |
58d180e8 | 12367 | |
e7d1c40c | 12368 | for (stub_sec = htab->params->stub_bfd->sections; |
58d180e8 AM |
12369 | stub_sec != NULL; |
12370 | stub_sec = stub_sec->next) | |
12371 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) | |
da44f4e5 | 12372 | size += 24; |
58d180e8 AM |
12373 | if (htab->glink != NULL && htab->glink->size != 0) |
12374 | size += 24; | |
12375 | if (size != 0) | |
12376 | size += sizeof (glink_eh_frame_cie); | |
4bbe044a AM |
12377 | align = 1; |
12378 | align <<= htab->glink_eh_frame->output_section->alignment_power; | |
12379 | align -= 1; | |
12380 | size = (size + align) & ~align; | |
58d180e8 AM |
12381 | htab->glink_eh_frame->rawsize = htab->glink_eh_frame->size; |
12382 | htab->glink_eh_frame->size = size; | |
12383 | } | |
12384 | ||
e7d1c40c AM |
12385 | if (htab->params->plt_stub_align != 0) |
12386 | for (stub_sec = htab->params->stub_bfd->sections; | |
794e51c0 AM |
12387 | stub_sec != NULL; |
12388 | stub_sec = stub_sec->next) | |
12389 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) | |
e7d1c40c AM |
12390 | stub_sec->size = ((stub_sec->size |
12391 | + (1 << htab->params->plt_stub_align) - 1) | |
12392 | & (-1 << htab->params->plt_stub_align)); | |
794e51c0 | 12393 | |
e7d1c40c | 12394 | for (stub_sec = htab->params->stub_bfd->sections; |
5c3dead3 AM |
12395 | stub_sec != NULL; |
12396 | stub_sec = stub_sec->next) | |
12397 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0 | |
12398 | && stub_sec->rawsize != stub_sec->size) | |
12399 | break; | |
12400 | ||
12401 | /* Exit from this loop when no stubs have been added, and no stubs | |
12402 | have changed size. */ | |
58d180e8 AM |
12403 | if (stub_sec == NULL |
12404 | && (htab->glink_eh_frame == NULL | |
12405 | || htab->glink_eh_frame->rawsize == htab->glink_eh_frame->size)) | |
5c3dead3 AM |
12406 | break; |
12407 | ||
721956f4 | 12408 | /* Ask the linker to do its stuff. */ |
e7d1c40c | 12409 | (*htab->params->layout_sections_again) (); |
721956f4 AM |
12410 | } |
12411 | ||
da44f4e5 AM |
12412 | if (htab->glink_eh_frame != NULL |
12413 | && htab->glink_eh_frame->size != 0) | |
12414 | { | |
12415 | bfd_vma val; | |
12416 | bfd_byte *p, *last_fde; | |
12417 | size_t last_fde_len, size, align, pad; | |
12418 | asection *stub_sec; | |
12419 | ||
12420 | p = bfd_zalloc (htab->glink_eh_frame->owner, htab->glink_eh_frame->size); | |
12421 | if (p == NULL) | |
12422 | return FALSE; | |
12423 | htab->glink_eh_frame->contents = p; | |
12424 | last_fde = p; | |
12425 | ||
12426 | memcpy (p, glink_eh_frame_cie, sizeof (glink_eh_frame_cie)); | |
12427 | /* CIE length (rewrite in case little-endian). */ | |
12428 | last_fde_len = sizeof (glink_eh_frame_cie) - 4; | |
12429 | bfd_put_32 (htab->elf.dynobj, last_fde_len, p); | |
12430 | p += sizeof (glink_eh_frame_cie); | |
12431 | ||
12432 | for (stub_sec = htab->params->stub_bfd->sections; | |
12433 | stub_sec != NULL; | |
12434 | stub_sec = stub_sec->next) | |
12435 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) | |
12436 | { | |
12437 | last_fde = p; | |
12438 | last_fde_len = 20; | |
12439 | /* FDE length. */ | |
12440 | bfd_put_32 (htab->elf.dynobj, 20, p); | |
12441 | p += 4; | |
12442 | /* CIE pointer. */ | |
12443 | val = p - htab->glink_eh_frame->contents; | |
12444 | bfd_put_32 (htab->elf.dynobj, val, p); | |
12445 | p += 4; | |
12446 | /* Offset to stub section, written later. */ | |
12447 | p += 4; | |
12448 | /* stub section size. */ | |
12449 | bfd_put_32 (htab->elf.dynobj, stub_sec->size, p); | |
12450 | p += 4; | |
12451 | /* Augmentation. */ | |
12452 | p += 1; | |
12453 | /* Pad. */ | |
12454 | p += 7; | |
12455 | } | |
12456 | if (htab->glink != NULL && htab->glink->size != 0) | |
12457 | { | |
12458 | last_fde = p; | |
12459 | last_fde_len = 20; | |
12460 | /* FDE length. */ | |
12461 | bfd_put_32 (htab->elf.dynobj, 20, p); | |
12462 | p += 4; | |
12463 | /* CIE pointer. */ | |
12464 | val = p - htab->glink_eh_frame->contents; | |
12465 | bfd_put_32 (htab->elf.dynobj, val, p); | |
12466 | p += 4; | |
12467 | /* Offset to .glink, written later. */ | |
12468 | p += 4; | |
12469 | /* .glink size. */ | |
12470 | bfd_put_32 (htab->elf.dynobj, htab->glink->size - 8, p); | |
12471 | p += 4; | |
12472 | /* Augmentation. */ | |
12473 | p += 1; | |
12474 | ||
12475 | *p++ = DW_CFA_advance_loc + 1; | |
12476 | *p++ = DW_CFA_register; | |
12477 | *p++ = 65; | |
12478 | *p++ = 12; | |
12479 | *p++ = DW_CFA_advance_loc + 4; | |
12480 | *p++ = DW_CFA_restore_extended; | |
12481 | *p++ = 65; | |
12482 | } | |
12483 | /* Subsume any padding into the last FDE if user .eh_frame | |
12484 | sections are aligned more than glink_eh_frame. Otherwise any | |
12485 | zero padding will be seen as a terminator. */ | |
12486 | size = p - htab->glink_eh_frame->contents; | |
12487 | align = 1; | |
12488 | align <<= htab->glink_eh_frame->output_section->alignment_power; | |
12489 | align -= 1; | |
12490 | pad = ((size + align) & ~align) - size; | |
12491 | htab->glink_eh_frame->size = size + pad; | |
12492 | bfd_put_32 (htab->elf.dynobj, last_fde_len + pad, last_fde); | |
12493 | } | |
12494 | ||
d969d15f AM |
12495 | maybe_strip_output (info, htab->brlt); |
12496 | if (htab->glink_eh_frame != NULL) | |
12497 | maybe_strip_output (info, htab->glink_eh_frame); | |
721956f4 | 12498 | |
b34976b6 | 12499 | return TRUE; |
721956f4 AM |
12500 | } |
12501 | ||
12502 | /* Called after we have determined section placement. If sections | |
805fc799 | 12503 | move, we'll be called again. Provide a value for TOCstart. */ |
721956f4 | 12504 | |
805fc799 | 12505 | bfd_vma |
1c865ab2 | 12506 | ppc64_elf_set_toc (struct bfd_link_info *info, bfd *obfd) |
721956f4 | 12507 | { |
805fc799 AM |
12508 | asection *s; |
12509 | bfd_vma TOCstart; | |
721956f4 | 12510 | |
805fc799 AM |
12511 | /* The TOC consists of sections .got, .toc, .tocbss, .plt in that |
12512 | order. The TOC starts where the first of these sections starts. */ | |
12513 | s = bfd_get_section_by_name (obfd, ".got"); | |
e054468f | 12514 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
805fc799 | 12515 | s = bfd_get_section_by_name (obfd, ".toc"); |
e054468f | 12516 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
805fc799 | 12517 | s = bfd_get_section_by_name (obfd, ".tocbss"); |
e054468f | 12518 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
805fc799 | 12519 | s = bfd_get_section_by_name (obfd, ".plt"); |
e054468f | 12520 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
805fc799 AM |
12521 | { |
12522 | /* This may happen for | |
12523 | o references to TOC base (SYM@toc / TOC[tc0]) without a | |
12524 | .toc directive | |
12525 | o bad linker script | |
12526 | o --gc-sections and empty TOC sections | |
12527 | ||
12528 | FIXME: Warn user? */ | |
12529 | ||
12530 | /* Look for a likely section. We probably won't even be | |
12531 | using TOCstart. */ | |
12532 | for (s = obfd->sections; s != NULL; s = s->next) | |
e054468f AM |
12533 | if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY |
12534 | | SEC_EXCLUDE)) | |
805fc799 AM |
12535 | == (SEC_ALLOC | SEC_SMALL_DATA)) |
12536 | break; | |
721956f4 | 12537 | if (s == NULL) |
805fc799 | 12538 | for (s = obfd->sections; s != NULL; s = s->next) |
e054468f | 12539 | if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_EXCLUDE)) |
805fc799 AM |
12540 | == (SEC_ALLOC | SEC_SMALL_DATA)) |
12541 | break; | |
721956f4 | 12542 | if (s == NULL) |
805fc799 | 12543 | for (s = obfd->sections; s != NULL; s = s->next) |
e054468f AM |
12544 | if ((s->flags & (SEC_ALLOC | SEC_READONLY | SEC_EXCLUDE)) |
12545 | == SEC_ALLOC) | |
805fc799 | 12546 | break; |
721956f4 | 12547 | if (s == NULL) |
805fc799 | 12548 | for (s = obfd->sections; s != NULL; s = s->next) |
e054468f | 12549 | if ((s->flags & (SEC_ALLOC | SEC_EXCLUDE)) == SEC_ALLOC) |
805fc799 AM |
12550 | break; |
12551 | } | |
721956f4 | 12552 | |
805fc799 AM |
12553 | TOCstart = 0; |
12554 | if (s != NULL) | |
12555 | TOCstart = s->output_section->vma + s->output_offset; | |
721956f4 | 12556 | |
1c865ab2 AM |
12557 | _bfd_set_gp_value (obfd, TOCstart); |
12558 | ||
810d4e75 | 12559 | if (info != NULL && s != NULL) |
1c865ab2 AM |
12560 | { |
12561 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
12562 | ||
810d4e75 AM |
12563 | if (htab != NULL) |
12564 | { | |
12565 | if (htab->elf.hgot != NULL) | |
12566 | { | |
12567 | htab->elf.hgot->root.u.def.value = TOC_BASE_OFF; | |
12568 | htab->elf.hgot->root.u.def.section = s; | |
12569 | } | |
12570 | } | |
12571 | else | |
1c865ab2 | 12572 | { |
810d4e75 AM |
12573 | struct bfd_link_hash_entry *bh = NULL; |
12574 | _bfd_generic_link_add_one_symbol (info, obfd, ".TOC.", BSF_GLOBAL, | |
12575 | s, TOC_BASE_OFF, NULL, FALSE, | |
12576 | FALSE, &bh); | |
1c865ab2 AM |
12577 | } |
12578 | } | |
805fc799 | 12579 | return TOCstart; |
721956f4 AM |
12580 | } |
12581 | ||
a345bc8d AM |
12582 | /* Called via elf_link_hash_traverse from ppc64_elf_build_stubs to |
12583 | write out any global entry stubs. */ | |
12584 | ||
12585 | static bfd_boolean | |
12586 | build_global_entry_stubs (struct elf_link_hash_entry *h, void *inf) | |
12587 | { | |
12588 | struct bfd_link_info *info; | |
12589 | struct ppc_link_hash_table *htab; | |
12590 | struct plt_entry *pent; | |
12591 | asection *s; | |
12592 | ||
12593 | if (h->root.type == bfd_link_hash_indirect) | |
12594 | return TRUE; | |
12595 | ||
12596 | if (!h->pointer_equality_needed) | |
12597 | return TRUE; | |
12598 | ||
12599 | if (h->def_regular) | |
12600 | return TRUE; | |
12601 | ||
12602 | info = inf; | |
12603 | htab = ppc_hash_table (info); | |
12604 | if (htab == NULL) | |
12605 | return FALSE; | |
12606 | ||
12607 | s = htab->glink; | |
12608 | for (pent = h->plt.plist; pent != NULL; pent = pent->next) | |
12609 | if (pent->plt.offset != (bfd_vma) -1 | |
12610 | && pent->addend == 0) | |
12611 | { | |
12612 | bfd_byte *p; | |
12613 | asection *plt; | |
12614 | bfd_vma off; | |
12615 | ||
a345bc8d | 12616 | p = s->contents + h->root.u.def.value; |
33e44f2e | 12617 | plt = htab->elf.splt; |
a345bc8d AM |
12618 | if (!htab->elf.dynamic_sections_created |
12619 | || h->dynindx == -1) | |
33e44f2e | 12620 | plt = htab->elf.iplt; |
a345bc8d AM |
12621 | off = pent->plt.offset + plt->output_offset + plt->output_section->vma; |
12622 | off -= h->root.u.def.value + s->output_offset + s->output_section->vma; | |
12623 | ||
12624 | if (off + 0x80008000 > 0xffffffff || (off & 3) != 0) | |
12625 | { | |
12626 | info->callbacks->einfo | |
12627 | (_("%P: linkage table error against `%T'\n"), | |
12628 | h->root.root.string); | |
12629 | bfd_set_error (bfd_error_bad_value); | |
12630 | htab->stub_error = TRUE; | |
12631 | } | |
12632 | ||
7341d5e2 AM |
12633 | htab->stub_count[ppc_stub_global_entry - 1] += 1; |
12634 | if (htab->params->emit_stub_syms) | |
12635 | { | |
12636 | size_t len = strlen (h->root.root.string); | |
12637 | char *name = bfd_malloc (sizeof "12345678.global_entry." + len); | |
12638 | ||
12639 | if (name == NULL) | |
12640 | return FALSE; | |
12641 | ||
12642 | sprintf (name, "%08x.global_entry.%s", s->id, h->root.root.string); | |
12643 | h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE); | |
12644 | if (h == NULL) | |
12645 | return FALSE; | |
12646 | if (h->root.type == bfd_link_hash_new) | |
12647 | { | |
12648 | h->root.type = bfd_link_hash_defined; | |
12649 | h->root.u.def.section = s; | |
12650 | h->root.u.def.value = p - s->contents; | |
12651 | h->ref_regular = 1; | |
12652 | h->def_regular = 1; | |
12653 | h->ref_regular_nonweak = 1; | |
12654 | h->forced_local = 1; | |
12655 | h->non_elf = 0; | |
12656 | } | |
12657 | } | |
12658 | ||
a345bc8d AM |
12659 | if (PPC_HA (off) != 0) |
12660 | { | |
12661 | bfd_put_32 (s->owner, ADDIS_R12_R12 | PPC_HA (off), p); | |
12662 | p += 4; | |
12663 | } | |
12664 | bfd_put_32 (s->owner, LD_R12_0R12 | PPC_LO (off), p); | |
12665 | p += 4; | |
12666 | bfd_put_32 (s->owner, MTCTR_R12, p); | |
12667 | p += 4; | |
12668 | bfd_put_32 (s->owner, BCTR, p); | |
12669 | break; | |
12670 | } | |
12671 | return TRUE; | |
12672 | } | |
12673 | ||
721956f4 AM |
12674 | /* Build all the stubs associated with the current output file. |
12675 | The stubs are kept in a hash table attached to the main linker | |
12676 | hash table. This function is called via gldelf64ppc_finish. */ | |
12677 | ||
b34976b6 | 12678 | bfd_boolean |
e7d1c40c | 12679 | ppc64_elf_build_stubs (struct bfd_link_info *info, |
4ce794b7 | 12680 | char **stats) |
5d1634d7 AM |
12681 | { |
12682 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
721956f4 | 12683 | asection *stub_sec; |
5d1634d7 | 12684 | bfd_byte *p; |
e717da7e | 12685 | int stub_sec_count = 0; |
5d1634d7 | 12686 | |
4dfe6ac6 NC |
12687 | if (htab == NULL) |
12688 | return FALSE; | |
12689 | ||
eea6121a | 12690 | /* Allocate memory to hold the linker stubs. */ |
e7d1c40c | 12691 | for (stub_sec = htab->params->stub_bfd->sections; |
721956f4 AM |
12692 | stub_sec != NULL; |
12693 | stub_sec = stub_sec->next) | |
eea6121a AM |
12694 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0 |
12695 | && stub_sec->size != 0) | |
e717da7e | 12696 | { |
e7d1c40c | 12697 | stub_sec->contents = bfd_zalloc (htab->params->stub_bfd, stub_sec->size); |
eea6121a AM |
12698 | if (stub_sec->contents == NULL) |
12699 | return FALSE; | |
12700 | /* We want to check that built size is the same as calculated | |
12701 | size. rawsize is a convenient location to use. */ | |
12702 | stub_sec->rawsize = stub_sec->size; | |
12703 | stub_sec->size = 0; | |
e717da7e | 12704 | } |
5d1634d7 | 12705 | |
23eb7e01 | 12706 | if (htab->glink != NULL && htab->glink->size != 0) |
5d1634d7 | 12707 | { |
9f951329 | 12708 | unsigned int indx; |
ad8e1ba5 | 12709 | bfd_vma plt0; |
9f951329 | 12710 | |
721956f4 | 12711 | /* Build the .glink plt call stub. */ |
e7d1c40c | 12712 | if (htab->params->emit_stub_syms) |
97b639ba AM |
12713 | { |
12714 | struct elf_link_hash_entry *h; | |
468392fb AM |
12715 | h = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve", |
12716 | TRUE, FALSE, FALSE); | |
97b639ba AM |
12717 | if (h == NULL) |
12718 | return FALSE; | |
12719 | if (h->root.type == bfd_link_hash_new) | |
12720 | { | |
12721 | h->root.type = bfd_link_hash_defined; | |
12722 | h->root.u.def.section = htab->glink; | |
ee4bf8d2 | 12723 | h->root.u.def.value = 8; |
f5385ebf AM |
12724 | h->ref_regular = 1; |
12725 | h->def_regular = 1; | |
12726 | h->ref_regular_nonweak = 1; | |
12727 | h->forced_local = 1; | |
12728 | h->non_elf = 0; | |
97b639ba AM |
12729 | } |
12730 | } | |
33e44f2e AM |
12731 | plt0 = (htab->elf.splt->output_section->vma |
12732 | + htab->elf.splt->output_offset | |
12733 | - 16); | |
176a0d42 AM |
12734 | if (info->emitrelocations) |
12735 | { | |
12736 | Elf_Internal_Rela *r = get_relocs (htab->glink, 1); | |
12737 | if (r == NULL) | |
12738 | return FALSE; | |
12739 | r->r_offset = (htab->glink->output_offset | |
12740 | + htab->glink->output_section->vma); | |
12741 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL64); | |
12742 | r->r_addend = plt0; | |
12743 | } | |
4ce794b7 | 12744 | p = htab->glink->contents; |
176a0d42 | 12745 | plt0 -= htab->glink->output_section->vma + htab->glink->output_offset; |
ee4bf8d2 AM |
12746 | bfd_put_64 (htab->glink->owner, plt0, p); |
12747 | p += 8; | |
b9e5796b AM |
12748 | if (htab->opd_abi) |
12749 | { | |
12750 | bfd_put_32 (htab->glink->owner, MFLR_R12, p); | |
12751 | p += 4; | |
12752 | bfd_put_32 (htab->glink->owner, BCL_20_31, p); | |
12753 | p += 4; | |
12754 | bfd_put_32 (htab->glink->owner, MFLR_R11, p); | |
12755 | p += 4; | |
12756 | bfd_put_32 (htab->glink->owner, LD_R2_0R11 | (-16 & 0xfffc), p); | |
12757 | p += 4; | |
12758 | bfd_put_32 (htab->glink->owner, MTLR_R12, p); | |
12759 | p += 4; | |
12760 | bfd_put_32 (htab->glink->owner, ADD_R11_R2_R11, p); | |
12761 | p += 4; | |
12762 | bfd_put_32 (htab->glink->owner, LD_R12_0R11, p); | |
12763 | p += 4; | |
12764 | bfd_put_32 (htab->glink->owner, LD_R2_0R11 | 8, p); | |
12765 | p += 4; | |
12766 | bfd_put_32 (htab->glink->owner, MTCTR_R12, p); | |
12767 | p += 4; | |
12768 | bfd_put_32 (htab->glink->owner, LD_R11_0R11 | 16, p); | |
12769 | p += 4; | |
12770 | } | |
12771 | else | |
12772 | { | |
12773 | bfd_put_32 (htab->glink->owner, MFLR_R0, p); | |
12774 | p += 4; | |
12775 | bfd_put_32 (htab->glink->owner, BCL_20_31, p); | |
12776 | p += 4; | |
12777 | bfd_put_32 (htab->glink->owner, MFLR_R11, p); | |
12778 | p += 4; | |
12779 | bfd_put_32 (htab->glink->owner, LD_R2_0R11 | (-16 & 0xfffc), p); | |
12780 | p += 4; | |
12781 | bfd_put_32 (htab->glink->owner, MTLR_R0, p); | |
12782 | p += 4; | |
12783 | bfd_put_32 (htab->glink->owner, SUB_R12_R12_R11, p); | |
12784 | p += 4; | |
12785 | bfd_put_32 (htab->glink->owner, ADD_R11_R2_R11, p); | |
12786 | p += 4; | |
12787 | bfd_put_32 (htab->glink->owner, ADDI_R0_R12 | (-48 & 0xffff), p); | |
12788 | p += 4; | |
12789 | bfd_put_32 (htab->glink->owner, LD_R12_0R11, p); | |
12790 | p += 4; | |
12791 | bfd_put_32 (htab->glink->owner, SRDI_R0_R0_2, p); | |
12792 | p += 4; | |
12793 | bfd_put_32 (htab->glink->owner, MTCTR_R12, p); | |
12794 | p += 4; | |
12795 | bfd_put_32 (htab->glink->owner, LD_R11_0R11 | 8, p); | |
12796 | p += 4; | |
12797 | } | |
4ce794b7 | 12798 | bfd_put_32 (htab->glink->owner, BCTR, p); |
ad8e1ba5 | 12799 | p += 4; |
ee4bf8d2 AM |
12800 | while (p - htab->glink->contents < GLINK_CALL_STUB_SIZE) |
12801 | { | |
12802 | bfd_put_32 (htab->glink->owner, NOP, p); | |
12803 | p += 4; | |
12804 | } | |
ad8e1ba5 | 12805 | |
9f951329 AM |
12806 | /* Build the .glink lazy link call stubs. */ |
12807 | indx = 0; | |
a345bc8d | 12808 | while (p < htab->glink->contents + htab->glink->rawsize) |
9f951329 | 12809 | { |
b9e5796b | 12810 | if (htab->opd_abi) |
9f951329 | 12811 | { |
b9e5796b AM |
12812 | if (indx < 0x8000) |
12813 | { | |
12814 | bfd_put_32 (htab->glink->owner, LI_R0_0 | indx, p); | |
12815 | p += 4; | |
12816 | } | |
12817 | else | |
12818 | { | |
12819 | bfd_put_32 (htab->glink->owner, LIS_R0_0 | PPC_HI (indx), p); | |
12820 | p += 4; | |
12821 | bfd_put_32 (htab->glink->owner, ORI_R0_R0_0 | PPC_LO (indx), | |
12822 | p); | |
12823 | p += 4; | |
12824 | } | |
9f951329 | 12825 | } |
4ce794b7 | 12826 | bfd_put_32 (htab->glink->owner, |
ee4bf8d2 | 12827 | B_DOT | ((htab->glink->contents - p + 8) & 0x3fffffc), p); |
a16d5acb | 12828 | indx++; |
9f951329 AM |
12829 | p += 4; |
12830 | } | |
a345bc8d AM |
12831 | |
12832 | /* Build .glink global entry stubs. */ | |
12833 | if (htab->glink->size > htab->glink->rawsize) | |
afe397ea | 12834 | elf_link_hash_traverse (&htab->elf, build_global_entry_stubs, info); |
5d1634d7 | 12835 | } |
5d1634d7 | 12836 | |
7341d5e2 | 12837 | if (htab->brlt != NULL && htab->brlt->size != 0) |
721956f4 | 12838 | { |
4ce794b7 | 12839 | htab->brlt->contents = bfd_zalloc (htab->brlt->owner, |
eea6121a | 12840 | htab->brlt->size); |
4ce794b7 | 12841 | if (htab->brlt->contents == NULL) |
b34976b6 | 12842 | return FALSE; |
721956f4 | 12843 | } |
ee75fd95 | 12844 | if (htab->relbrlt != NULL && htab->relbrlt->size != 0) |
63bc6f6c AM |
12845 | { |
12846 | htab->relbrlt->contents = bfd_zalloc (htab->relbrlt->owner, | |
eea6121a | 12847 | htab->relbrlt->size); |
63bc6f6c AM |
12848 | if (htab->relbrlt->contents == NULL) |
12849 | return FALSE; | |
12850 | } | |
5d1634d7 | 12851 | |
721956f4 AM |
12852 | /* Build the stubs as directed by the stub hash table. */ |
12853 | bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info); | |
5d1634d7 | 12854 | |
aa8a7074 AM |
12855 | if (htab->relbrlt != NULL) |
12856 | htab->relbrlt->reloc_count = 0; | |
12857 | ||
e7d1c40c AM |
12858 | if (htab->params->plt_stub_align != 0) |
12859 | for (stub_sec = htab->params->stub_bfd->sections; | |
794e51c0 AM |
12860 | stub_sec != NULL; |
12861 | stub_sec = stub_sec->next) | |
12862 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) | |
e7d1c40c AM |
12863 | stub_sec->size = ((stub_sec->size |
12864 | + (1 << htab->params->plt_stub_align) - 1) | |
12865 | & (-1 << htab->params->plt_stub_align)); | |
794e51c0 | 12866 | |
e7d1c40c | 12867 | for (stub_sec = htab->params->stub_bfd->sections; |
721956f4 AM |
12868 | stub_sec != NULL; |
12869 | stub_sec = stub_sec->next) | |
e717da7e AM |
12870 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) |
12871 | { | |
12872 | stub_sec_count += 1; | |
eea6121a | 12873 | if (stub_sec->rawsize != stub_sec->size) |
e717da7e AM |
12874 | break; |
12875 | } | |
5d1634d7 | 12876 | |
da44f4e5 AM |
12877 | /* Note that the glink_eh_frame check here is not only testing that |
12878 | the generated size matched the calculated size but also that | |
12879 | bfd_elf_discard_info didn't make any changes to the section. */ | |
721956f4 | 12880 | if (stub_sec != NULL |
58d180e8 AM |
12881 | || (htab->glink_eh_frame != NULL |
12882 | && htab->glink_eh_frame->rawsize != htab->glink_eh_frame->size)) | |
5d1634d7 | 12883 | { |
b34976b6 | 12884 | htab->stub_error = TRUE; |
8de848d8 | 12885 | info->callbacks->einfo (_("%P: stubs don't match calculated size\n")); |
5d1634d7 | 12886 | } |
721956f4 | 12887 | |
d2a300cf AM |
12888 | if (htab->stub_error) |
12889 | return FALSE; | |
12890 | ||
12891 | if (stats != NULL) | |
12892 | { | |
12893 | *stats = bfd_malloc (500); | |
12894 | if (*stats == NULL) | |
12895 | return FALSE; | |
12896 | ||
ee75fd95 | 12897 | sprintf (*stats, _("linker stubs in %u group%s\n" |
d2a300cf AM |
12898 | " branch %lu\n" |
12899 | " toc adjust %lu\n" | |
12900 | " long branch %lu\n" | |
12901 | " long toc adj %lu\n" | |
794e51c0 | 12902 | " plt call %lu\n" |
7341d5e2 AM |
12903 | " plt call toc %lu\n" |
12904 | " global entry %lu"), | |
e717da7e | 12905 | stub_sec_count, |
ee75fd95 | 12906 | stub_sec_count == 1 ? "" : "s", |
4ce794b7 AM |
12907 | htab->stub_count[ppc_stub_long_branch - 1], |
12908 | htab->stub_count[ppc_stub_long_branch_r2off - 1], | |
12909 | htab->stub_count[ppc_stub_plt_branch - 1], | |
12910 | htab->stub_count[ppc_stub_plt_branch_r2off - 1], | |
794e51c0 | 12911 | htab->stub_count[ppc_stub_plt_call - 1], |
7341d5e2 AM |
12912 | htab->stub_count[ppc_stub_plt_call_r2save - 1], |
12913 | htab->stub_count[ppc_stub_global_entry - 1]); | |
d2a300cf AM |
12914 | } |
12915 | return TRUE; | |
5bd4f169 AM |
12916 | } |
12917 | ||
99877b66 AM |
12918 | /* This function undoes the changes made by add_symbol_adjust. */ |
12919 | ||
12920 | static bfd_boolean | |
12921 | undo_symbol_twiddle (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED) | |
12922 | { | |
12923 | struct ppc_link_hash_entry *eh; | |
12924 | ||
12925 | if (h->root.type == bfd_link_hash_indirect) | |
12926 | return TRUE; | |
12927 | ||
99877b66 AM |
12928 | eh = (struct ppc_link_hash_entry *) h; |
12929 | if (eh->elf.root.type != bfd_link_hash_undefweak || !eh->was_undefined) | |
12930 | return TRUE; | |
12931 | ||
12932 | eh->elf.root.type = bfd_link_hash_undefined; | |
12933 | return TRUE; | |
12934 | } | |
12935 | ||
12936 | void | |
12937 | ppc64_elf_restore_symbols (struct bfd_link_info *info) | |
12938 | { | |
12939 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
12940 | |
12941 | if (htab != NULL) | |
12942 | elf_link_hash_traverse (&htab->elf, undo_symbol_twiddle, info); | |
99877b66 AM |
12943 | } |
12944 | ||
60124e18 AM |
12945 | /* What to do when ld finds relocations against symbols defined in |
12946 | discarded sections. */ | |
12947 | ||
12948 | static unsigned int | |
12949 | ppc64_elf_action_discarded (asection *sec) | |
12950 | { | |
12951 | if (strcmp (".opd", sec->name) == 0) | |
12952 | return 0; | |
12953 | ||
12954 | if (strcmp (".toc", sec->name) == 0) | |
12955 | return 0; | |
12956 | ||
bce50a28 JJ |
12957 | if (strcmp (".toc1", sec->name) == 0) |
12958 | return 0; | |
12959 | ||
60124e18 AM |
12960 | return _bfd_elf_default_action_discarded (sec); |
12961 | } | |
12962 | ||
5bd4f169 AM |
12963 | /* The RELOCATE_SECTION function is called by the ELF backend linker |
12964 | to handle the relocations for a section. | |
12965 | ||
12966 | The relocs are always passed as Rela structures; if the section | |
12967 | actually uses Rel structures, the r_addend field will always be | |
12968 | zero. | |
12969 | ||
12970 | This function is responsible for adjust the section contents as | |
12971 | necessary, and (if using Rela relocs and generating a | |
1049f94e | 12972 | relocatable output file) adjusting the reloc addend as |
5bd4f169 AM |
12973 | necessary. |
12974 | ||
12975 | This function does not have to worry about setting the reloc | |
12976 | address or the reloc symbol index. | |
12977 | ||
12978 | LOCAL_SYMS is a pointer to the swapped in local symbols. | |
12979 | ||
12980 | LOCAL_SECTIONS is an array giving the section in the input file | |
12981 | corresponding to the st_shndx field of each local symbol. | |
12982 | ||
12983 | The global hash table entry for the global symbols can be found | |
12984 | via elf_sym_hashes (input_bfd). | |
12985 | ||
1049f94e | 12986 | When generating relocatable output, this function must handle |
5bd4f169 AM |
12987 | STB_LOCAL/STT_SECTION symbols specially. The output symbol is |
12988 | going to be the section symbol corresponding to the output | |
12989 | section, which means that the addend must be adjusted | |
12990 | accordingly. */ | |
12991 | ||
b34976b6 | 12992 | static bfd_boolean |
4ce794b7 AM |
12993 | ppc64_elf_relocate_section (bfd *output_bfd, |
12994 | struct bfd_link_info *info, | |
12995 | bfd *input_bfd, | |
12996 | asection *input_section, | |
12997 | bfd_byte *contents, | |
12998 | Elf_Internal_Rela *relocs, | |
12999 | Elf_Internal_Sym *local_syms, | |
13000 | asection **local_sections) | |
5bd4f169 | 13001 | { |
65f38f15 | 13002 | struct ppc_link_hash_table *htab; |
5bd4f169 AM |
13003 | Elf_Internal_Shdr *symtab_hdr; |
13004 | struct elf_link_hash_entry **sym_hashes; | |
5bd4f169 AM |
13005 | Elf_Internal_Rela *rel; |
13006 | Elf_Internal_Rela *relend; | |
411e1bfb AM |
13007 | Elf_Internal_Rela outrel; |
13008 | bfd_byte *loc; | |
411e1bfb | 13009 | struct got_entry **local_got_ents; |
5bd4f169 | 13010 | bfd_vma TOCstart; |
b34976b6 AM |
13011 | bfd_boolean ret = TRUE; |
13012 | bfd_boolean is_opd; | |
794e51c0 AM |
13013 | /* Assume 'at' branch hints. */ |
13014 | bfd_boolean is_isa_v2 = TRUE; | |
4fe5ca5b | 13015 | bfd_vma d_offset = (bfd_big_endian (output_bfd) ? 2 : 0); |
5bd4f169 | 13016 | |
65f38f15 | 13017 | /* Initialize howto table if needed. */ |
5bd4f169 | 13018 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) |
5bd4f169 AM |
13019 | ppc_howto_init (); |
13020 | ||
65f38f15 | 13021 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
13022 | if (htab == NULL) |
13023 | return FALSE; | |
ee75fd95 AM |
13024 | |
13025 | /* Don't relocate stub sections. */ | |
e7d1c40c | 13026 | if (input_section->owner == htab->params->stub_bfd) |
ee75fd95 AM |
13027 | return TRUE; |
13028 | ||
0c8d6e5c | 13029 | BFD_ASSERT (is_ppc64_elf (input_bfd)); |
0ffa91dd | 13030 | |
411e1bfb | 13031 | local_got_ents = elf_local_got_ents (input_bfd); |
5bd4f169 | 13032 | TOCstart = elf_gp (output_bfd); |
0ffa91dd | 13033 | symtab_hdr = &elf_symtab_hdr (input_bfd); |
5bd4f169 | 13034 | sym_hashes = elf_sym_hashes (input_bfd); |
7c8fe5c4 | 13035 | is_opd = ppc64_elf_section_data (input_section)->sec_type == sec_opd; |
65f38f15 | 13036 | |
5bd4f169 AM |
13037 | rel = relocs; |
13038 | relend = relocs + input_section->reloc_count; | |
13039 | for (; rel < relend; rel++) | |
13040 | { | |
04c9666a | 13041 | enum elf_ppc64_reloc_type r_type; |
31c76678 | 13042 | bfd_vma addend; |
5bd4f169 AM |
13043 | bfd_reloc_status_type r; |
13044 | Elf_Internal_Sym *sym; | |
13045 | asection *sec; | |
039b3fef AM |
13046 | struct elf_link_hash_entry *h_elf; |
13047 | struct ppc_link_hash_entry *h; | |
13048 | struct ppc_link_hash_entry *fdh; | |
5bd4f169 | 13049 | const char *sym_name; |
0d4792f7 | 13050 | unsigned long r_symndx, toc_symndx; |
3a71aa26 | 13051 | bfd_vma toc_addend; |
f961d9dd AM |
13052 | unsigned char tls_mask, tls_gd, tls_type; |
13053 | unsigned char sym_type; | |
5bd4f169 | 13054 | bfd_vma relocation; |
b34976b6 AM |
13055 | bfd_boolean unresolved_reloc; |
13056 | bfd_boolean warned; | |
bc30df16 | 13057 | enum { DEST_NORMAL, DEST_OPD, DEST_STUB } reloc_dest; |
67f0cbdb | 13058 | unsigned int insn; |
e11840f9 | 13059 | unsigned int mask; |
721956f4 AM |
13060 | struct ppc_stub_hash_entry *stub_entry; |
13061 | bfd_vma max_br_offset; | |
13062 | bfd_vma from; | |
31c76678 | 13063 | const Elf_Internal_Rela orig_rel = *rel; |
b80eed39 AM |
13064 | reloc_howto_type *howto; |
13065 | struct reloc_howto_struct alt_howto; | |
5bd4f169 | 13066 | |
4ce794b7 | 13067 | r_type = ELF64_R_TYPE (rel->r_info); |
5bd4f169 | 13068 | r_symndx = ELF64_R_SYM (rel->r_info); |
ee87f2da AM |
13069 | |
13070 | /* For old style R_PPC64_TOC relocs with a zero symbol, use the | |
13071 | symbol of the previous ADDR64 reloc. The symbol gives us the | |
13072 | proper TOC base to use. */ | |
13073 | if (rel->r_info == ELF64_R_INFO (0, R_PPC64_TOC) | |
13074 | && rel != relocs | |
13075 | && ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_ADDR64 | |
13076 | && is_opd) | |
13077 | r_symndx = ELF64_R_SYM (rel[-1].r_info); | |
13078 | ||
4ce794b7 AM |
13079 | sym = NULL; |
13080 | sec = NULL; | |
039b3fef | 13081 | h_elf = NULL; |
4ce794b7 | 13082 | sym_name = NULL; |
b34976b6 AM |
13083 | unresolved_reloc = FALSE; |
13084 | warned = FALSE; | |
65f38f15 | 13085 | |
0b13192e | 13086 | if (r_symndx < symtab_hdr->sh_info) |
5bd4f169 AM |
13087 | { |
13088 | /* It's a local symbol. */ | |
74f0fb50 | 13089 | struct _opd_sec_data *opd; |
4025353c | 13090 | |
5bd4f169 AM |
13091 | sym = local_syms + r_symndx; |
13092 | sec = local_sections[r_symndx]; | |
26c61ae5 | 13093 | sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec); |
0d4792f7 | 13094 | sym_type = ELF64_ST_TYPE (sym->st_info); |
8517fae7 | 13095 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); |
74f0fb50 AM |
13096 | opd = get_opd_info (sec); |
13097 | if (opd != NULL && opd->adjust != NULL) | |
1e2f5b6e | 13098 | { |
51aecdc5 AM |
13099 | long adjust = opd->adjust[OPD_NDX (sym->st_value |
13100 | + rel->r_addend)]; | |
4025353c AM |
13101 | if (adjust == -1) |
13102 | relocation = 0; | |
13103 | else | |
4cc603a5 AM |
13104 | { |
13105 | /* If this is a relocation against the opd section sym | |
13106 | and we have edited .opd, adjust the reloc addend so | |
13107 | that ld -r and ld --emit-relocs output is correct. | |
13108 | If it is a reloc against some other .opd symbol, | |
13109 | then the symbol value will be adjusted later. */ | |
13110 | if (ELF_ST_TYPE (sym->st_info) == STT_SECTION) | |
13111 | rel->r_addend += adjust; | |
13112 | else | |
13113 | relocation += adjust; | |
13114 | } | |
1e2f5b6e | 13115 | } |
5bd4f169 AM |
13116 | } |
13117 | else | |
13118 | { | |
62d887d4 L |
13119 | bfd_boolean ignored; |
13120 | ||
b2a8e766 AM |
13121 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
13122 | r_symndx, symtab_hdr, sym_hashes, | |
039b3fef | 13123 | h_elf, sec, relocation, |
62d887d4 | 13124 | unresolved_reloc, warned, ignored); |
039b3fef AM |
13125 | sym_name = h_elf->root.root.string; |
13126 | sym_type = h_elf->type; | |
b69fdb4e AM |
13127 | if (sec != NULL |
13128 | && sec->owner == output_bfd | |
13129 | && strcmp (sec->name, ".opd") == 0) | |
13130 | { | |
13131 | /* This is a symbol defined in a linker script. All | |
13132 | such are defined in output sections, even those | |
13133 | defined by simple assignment from a symbol defined in | |
13134 | an input section. Transfer the symbol to an | |
13135 | appropriate input .opd section, so that a branch to | |
13136 | this symbol will be mapped to the location specified | |
13137 | by the opd entry. */ | |
13138 | struct bfd_link_order *lo; | |
13139 | for (lo = sec->map_head.link_order; lo != NULL; lo = lo->next) | |
13140 | if (lo->type == bfd_indirect_link_order) | |
13141 | { | |
13142 | asection *isec = lo->u.indirect.section; | |
13143 | if (h_elf->root.u.def.value >= isec->output_offset | |
13144 | && h_elf->root.u.def.value < (isec->output_offset | |
13145 | + isec->size)) | |
13146 | { | |
13147 | h_elf->root.u.def.value -= isec->output_offset; | |
13148 | h_elf->root.u.def.section = isec; | |
13149 | sec = isec; | |
13150 | break; | |
13151 | } | |
13152 | } | |
13153 | } | |
5bd4f169 | 13154 | } |
039b3fef | 13155 | h = (struct ppc_link_hash_entry *) h_elf; |
5bd4f169 | 13156 | |
dbaa2011 | 13157 | if (sec != NULL && discarded_section (sec)) |
e4067dbb | 13158 | RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, |
545fd46b MR |
13159 | rel, 1, relend, |
13160 | ppc64_elf_howto_table[r_type], 0, | |
e4067dbb | 13161 | contents); |
ab96bf03 AM |
13162 | |
13163 | if (info->relocatable) | |
13164 | continue; | |
13165 | ||
f40da81b AM |
13166 | if (h != NULL && &h->elf == htab->elf.hgot) |
13167 | { | |
13168 | relocation = (TOCstart | |
13169 | + htab->stub_group[input_section->id].toc_off); | |
13170 | sec = bfd_abs_section_ptr; | |
13171 | unresolved_reloc = FALSE; | |
13172 | } | |
13173 | ||
951fd09b AM |
13174 | /* TLS optimizations. Replace instruction sequences and relocs |
13175 | based on information we collected in tls_optimize. We edit | |
13176 | RELOCS so that --emit-relocs will output something sensible | |
13177 | for the final instruction stream. */ | |
13178 | tls_mask = 0; | |
13179 | tls_gd = 0; | |
0d4792f7 | 13180 | toc_symndx = 0; |
727fc41e AM |
13181 | if (h != NULL) |
13182 | tls_mask = h->tls_mask; | |
13183 | else if (local_got_ents != NULL) | |
411e1bfb | 13184 | { |
e054468f AM |
13185 | struct plt_entry **local_plt = (struct plt_entry **) |
13186 | (local_got_ents + symtab_hdr->sh_info); | |
f961d9dd | 13187 | unsigned char *lgot_masks = (unsigned char *) |
e054468f | 13188 | (local_plt + symtab_hdr->sh_info); |
727fc41e AM |
13189 | tls_mask = lgot_masks[r_symndx]; |
13190 | } | |
13191 | if (tls_mask == 0 | |
13192 | && (r_type == R_PPC64_TLS | |
13193 | || r_type == R_PPC64_TLSGD | |
13194 | || r_type == R_PPC64_TLSLD)) | |
13195 | { | |
13196 | /* Check for toc tls entries. */ | |
f961d9dd | 13197 | unsigned char *toc_tls; |
0d4792f7 | 13198 | |
727fc41e AM |
13199 | if (!get_tls_mask (&toc_tls, &toc_symndx, &toc_addend, |
13200 | &local_syms, rel, input_bfd)) | |
13201 | return FALSE; | |
0d4792f7 | 13202 | |
727fc41e AM |
13203 | if (toc_tls) |
13204 | tls_mask = *toc_tls; | |
0d4792f7 AM |
13205 | } |
13206 | ||
13207 | /* Check that tls relocs are used with tls syms, and non-tls | |
13208 | relocs are used with non-tls syms. */ | |
cf35638d | 13209 | if (r_symndx != STN_UNDEF |
0d4792f7 AM |
13210 | && r_type != R_PPC64_NONE |
13211 | && (h == NULL | |
039b3fef AM |
13212 | || h->elf.root.type == bfd_link_hash_defined |
13213 | || h->elf.root.type == bfd_link_hash_defweak) | |
1d483afe AM |
13214 | && (IS_PPC64_TLS_RELOC (r_type) |
13215 | != (sym_type == STT_TLS | |
13216 | || (sym_type == STT_SECTION | |
13217 | && (sec->flags & SEC_THREAD_LOCAL) != 0)))) | |
0d4792f7 | 13218 | { |
727fc41e AM |
13219 | if (tls_mask != 0 |
13220 | && (r_type == R_PPC64_TLS | |
13221 | || r_type == R_PPC64_TLSGD | |
13222 | || r_type == R_PPC64_TLSLD)) | |
0d4792f7 AM |
13223 | /* R_PPC64_TLS is OK against a symbol in the TOC. */ |
13224 | ; | |
13225 | else | |
25f53a85 | 13226 | info->callbacks->einfo |
1d483afe | 13227 | (!IS_PPC64_TLS_RELOC (r_type) |
bc30df16 AM |
13228 | ? _("%P: %H: %s used with TLS symbol `%T'\n") |
13229 | : _("%P: %H: %s used with non-TLS symbol `%T'\n"), | |
25f53a85 | 13230 | input_bfd, input_section, rel->r_offset, |
0d4792f7 AM |
13231 | ppc64_elf_howto_table[r_type]->name, |
13232 | sym_name); | |
411e1bfb AM |
13233 | } |
13234 | ||
13235 | /* Ensure reloc mapping code below stays sane. */ | |
13236 | if (R_PPC64_TOC16_LO_DS != R_PPC64_TOC16_DS + 1 | |
13237 | || R_PPC64_TOC16_LO != R_PPC64_TOC16 + 1 | |
13238 | || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TLSGD16 & 3) | |
13239 | || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TLSGD16_LO & 3) | |
13240 | || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TLSGD16_HI & 3) | |
13241 | || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TLSGD16_HA & 3) | |
13242 | || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TPREL16_DS & 3) | |
13243 | || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TPREL16_LO_DS & 3) | |
13244 | || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TPREL16_HI & 3) | |
13245 | || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TPREL16_HA & 3)) | |
13246 | abort (); | |
0d4792f7 | 13247 | |
411e1bfb AM |
13248 | switch (r_type) |
13249 | { | |
13250 | default: | |
411e1bfb AM |
13251 | break; |
13252 | ||
ba761f19 AM |
13253 | case R_PPC64_LO_DS_OPT: |
13254 | insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset); | |
13255 | if ((insn & (0x3f << 26)) != 58u << 26) | |
13256 | abort (); | |
13257 | insn += (14u << 26) - (58u << 26); | |
13258 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset); | |
13259 | r_type = R_PPC64_TOC16_LO; | |
13260 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
13261 | break; | |
13262 | ||
411e1bfb AM |
13263 | case R_PPC64_TOC16: |
13264 | case R_PPC64_TOC16_LO: | |
13265 | case R_PPC64_TOC16_DS: | |
13266 | case R_PPC64_TOC16_LO_DS: | |
411e1bfb AM |
13267 | { |
13268 | /* Check for toc tls entries. */ | |
f961d9dd | 13269 | unsigned char *toc_tls; |
951fd09b | 13270 | int retval; |
411e1bfb | 13271 | |
3a71aa26 AM |
13272 | retval = get_tls_mask (&toc_tls, &toc_symndx, &toc_addend, |
13273 | &local_syms, rel, input_bfd); | |
951fd09b | 13274 | if (retval == 0) |
411e1bfb AM |
13275 | return FALSE; |
13276 | ||
13277 | if (toc_tls) | |
13278 | { | |
951fd09b | 13279 | tls_mask = *toc_tls; |
411e1bfb AM |
13280 | if (r_type == R_PPC64_TOC16_DS |
13281 | || r_type == R_PPC64_TOC16_LO_DS) | |
81407a69 AM |
13282 | { |
13283 | if (tls_mask != 0 | |
13284 | && (tls_mask & (TLS_DTPREL | TLS_TPREL)) == 0) | |
13285 | goto toctprel; | |
13286 | } | |
411e1bfb | 13287 | else |
951fd09b AM |
13288 | { |
13289 | /* If we found a GD reloc pair, then we might be | |
13290 | doing a GD->IE transition. */ | |
13291 | if (retval == 2) | |
13292 | { | |
13293 | tls_gd = TLS_TPRELGD; | |
13294 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
102890f0 | 13295 | goto tls_ldgd_opt; |
951fd09b AM |
13296 | } |
13297 | else if (retval == 3) | |
13298 | { | |
13299 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) | |
102890f0 | 13300 | goto tls_ldgd_opt; |
951fd09b AM |
13301 | } |
13302 | } | |
411e1bfb AM |
13303 | } |
13304 | } | |
13305 | break; | |
13306 | ||
9d6ded02 AM |
13307 | case R_PPC64_GOT_TPREL16_HI: |
13308 | case R_PPC64_GOT_TPREL16_HA: | |
13309 | if (tls_mask != 0 | |
13310 | && (tls_mask & TLS_TPREL) == 0) | |
13311 | { | |
13312 | rel->r_offset -= d_offset; | |
13313 | bfd_put_32 (output_bfd, NOP, contents + rel->r_offset); | |
13314 | r_type = R_PPC64_NONE; | |
13315 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
13316 | } | |
13317 | break; | |
13318 | ||
411e1bfb AM |
13319 | case R_PPC64_GOT_TPREL16_DS: |
13320 | case R_PPC64_GOT_TPREL16_LO_DS: | |
951fd09b AM |
13321 | if (tls_mask != 0 |
13322 | && (tls_mask & TLS_TPREL) == 0) | |
411e1bfb | 13323 | { |
81407a69 | 13324 | toctprel: |
4fe5ca5b | 13325 | insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset); |
411e1bfb AM |
13326 | insn &= 31 << 21; |
13327 | insn |= 0x3c0d0000; /* addis 0,13,0 */ | |
4fe5ca5b | 13328 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset); |
411e1bfb | 13329 | r_type = R_PPC64_TPREL16_HA; |
0d4792f7 AM |
13330 | if (toc_symndx != 0) |
13331 | { | |
13332 | rel->r_info = ELF64_R_INFO (toc_symndx, r_type); | |
3a71aa26 | 13333 | rel->r_addend = toc_addend; |
0d4792f7 AM |
13334 | /* We changed the symbol. Start over in order to |
13335 | get h, sym, sec etc. right. */ | |
13336 | rel--; | |
13337 | continue; | |
13338 | } | |
13339 | else | |
13340 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
411e1bfb AM |
13341 | } |
13342 | break; | |
13343 | ||
13344 | case R_PPC64_TLS: | |
951fd09b AM |
13345 | if (tls_mask != 0 |
13346 | && (tls_mask & TLS_TPREL) == 0) | |
411e1bfb | 13347 | { |
411e1bfb | 13348 | insn = bfd_get_32 (output_bfd, contents + rel->r_offset); |
2d0f3896 AM |
13349 | insn = _bfd_elf_ppc_at_tls_transform (insn, 13); |
13350 | if (insn == 0) | |
411e1bfb | 13351 | abort (); |
411e1bfb | 13352 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset); |
411e1bfb | 13353 | /* Was PPC64_TLS which sits on insn boundary, now |
4fe5ca5b GM |
13354 | PPC64_TPREL16_LO which is at low-order half-word. */ |
13355 | rel->r_offset += d_offset; | |
0d4792f7 AM |
13356 | r_type = R_PPC64_TPREL16_LO; |
13357 | if (toc_symndx != 0) | |
13358 | { | |
13359 | rel->r_info = ELF64_R_INFO (toc_symndx, r_type); | |
3a71aa26 | 13360 | rel->r_addend = toc_addend; |
0d4792f7 AM |
13361 | /* We changed the symbol. Start over in order to |
13362 | get h, sym, sec etc. right. */ | |
13363 | rel--; | |
13364 | continue; | |
13365 | } | |
13366 | else | |
13367 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
411e1bfb AM |
13368 | } |
13369 | break; | |
13370 | ||
411e1bfb AM |
13371 | case R_PPC64_GOT_TLSGD16_HI: |
13372 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b AM |
13373 | tls_gd = TLS_TPRELGD; |
13374 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
13375 | goto tls_gdld_hi; | |
13376 | break; | |
13377 | ||
411e1bfb AM |
13378 | case R_PPC64_GOT_TLSLD16_HI: |
13379 | case R_PPC64_GOT_TLSLD16_HA: | |
951fd09b | 13380 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) |
411e1bfb | 13381 | { |
951fd09b AM |
13382 | tls_gdld_hi: |
13383 | if ((tls_mask & tls_gd) != 0) | |
13384 | r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3) | |
13385 | + R_PPC64_GOT_TPREL16_DS); | |
13386 | else | |
411e1bfb | 13387 | { |
4fe5ca5b | 13388 | rel->r_offset -= d_offset; |
727ac201 | 13389 | bfd_put_32 (output_bfd, NOP, contents + rel->r_offset); |
951fd09b | 13390 | r_type = R_PPC64_NONE; |
411e1bfb | 13391 | } |
951fd09b | 13392 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); |
411e1bfb AM |
13393 | } |
13394 | break; | |
13395 | ||
951fd09b AM |
13396 | case R_PPC64_GOT_TLSGD16: |
13397 | case R_PPC64_GOT_TLSGD16_LO: | |
13398 | tls_gd = TLS_TPRELGD; | |
13399 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
102890f0 | 13400 | goto tls_ldgd_opt; |
951fd09b | 13401 | break; |
411e1bfb | 13402 | |
951fd09b AM |
13403 | case R_PPC64_GOT_TLSLD16: |
13404 | case R_PPC64_GOT_TLSLD16_LO: | |
13405 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) | |
13406 | { | |
3a71aa26 | 13407 | unsigned int insn1, insn2, insn3; |
102890f0 AM |
13408 | bfd_vma offset; |
13409 | ||
13410 | tls_ldgd_opt: | |
727fc41e AM |
13411 | offset = (bfd_vma) -1; |
13412 | /* If not using the newer R_PPC64_TLSGD/LD to mark | |
13413 | __tls_get_addr calls, we must trust that the call | |
13414 | stays with its arg setup insns, ie. that the next | |
13415 | reloc is the __tls_get_addr call associated with | |
13416 | the current reloc. Edit both insns. */ | |
13417 | if (input_section->has_tls_get_addr_call | |
13418 | && rel + 1 < relend | |
13419 | && branch_reloc_hash_match (input_bfd, rel + 1, | |
13420 | htab->tls_get_addr, | |
13421 | htab->tls_get_addr_fd)) | |
13422 | offset = rel[1].r_offset; | |
b86ac8e3 AM |
13423 | /* We read the low GOT_TLS (or TOC16) insn because we |
13424 | need to keep the destination reg. It may be | |
13425 | something other than the usual r3, and moved to r3 | |
13426 | before the call by intervening code. */ | |
13427 | insn1 = bfd_get_32 (output_bfd, | |
13428 | contents + rel->r_offset - d_offset); | |
102890f0 | 13429 | if ((tls_mask & tls_gd) != 0) |
411e1bfb | 13430 | { |
102890f0 | 13431 | /* IE */ |
b86ac8e3 | 13432 | insn1 &= (0x1f << 21) | (0x1f << 16); |
102890f0 AM |
13433 | insn1 |= 58 << 26; /* ld */ |
13434 | insn2 = 0x7c636a14; /* add 3,3,13 */ | |
727fc41e | 13435 | if (offset != (bfd_vma) -1) |
f58d5a2d | 13436 | rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE); |
102890f0 AM |
13437 | if ((tls_mask & TLS_EXPLICIT) == 0) |
13438 | r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3) | |
13439 | + R_PPC64_GOT_TPREL16_DS); | |
411e1bfb | 13440 | else |
102890f0 AM |
13441 | r_type += R_PPC64_TOC16_DS - R_PPC64_TOC16; |
13442 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
13443 | } | |
13444 | else | |
13445 | { | |
13446 | /* LE */ | |
b86ac8e3 AM |
13447 | insn1 &= 0x1f << 21; |
13448 | insn1 |= 0x3c0d0000; /* addis r,13,0 */ | |
102890f0 AM |
13449 | insn2 = 0x38630000; /* addi 3,3,0 */ |
13450 | if (tls_gd == 0) | |
951fd09b | 13451 | { |
102890f0 | 13452 | /* Was an LD reloc. */ |
1d483afe AM |
13453 | if (toc_symndx) |
13454 | sec = local_sections[toc_symndx]; | |
13455 | for (r_symndx = 0; | |
13456 | r_symndx < symtab_hdr->sh_info; | |
13457 | r_symndx++) | |
13458 | if (local_sections[r_symndx] == sec) | |
13459 | break; | |
13460 | if (r_symndx >= symtab_hdr->sh_info) | |
cf35638d | 13461 | r_symndx = STN_UNDEF; |
102890f0 | 13462 | rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; |
cf35638d | 13463 | if (r_symndx != STN_UNDEF) |
1d483afe AM |
13464 | rel->r_addend -= (local_syms[r_symndx].st_value |
13465 | + sec->output_offset | |
13466 | + sec->output_section->vma); | |
951fd09b | 13467 | } |
102890f0 | 13468 | else if (toc_symndx != 0) |
3a71aa26 AM |
13469 | { |
13470 | r_symndx = toc_symndx; | |
13471 | rel->r_addend = toc_addend; | |
13472 | } | |
102890f0 AM |
13473 | r_type = R_PPC64_TPREL16_HA; |
13474 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
727fc41e AM |
13475 | if (offset != (bfd_vma) -1) |
13476 | { | |
13477 | rel[1].r_info = ELF64_R_INFO (r_symndx, | |
13478 | R_PPC64_TPREL16_LO); | |
13479 | rel[1].r_offset = offset + d_offset; | |
13480 | rel[1].r_addend = rel->r_addend; | |
13481 | } | |
102890f0 | 13482 | } |
3a71aa26 AM |
13483 | bfd_put_32 (output_bfd, insn1, |
13484 | contents + rel->r_offset - d_offset); | |
727fc41e AM |
13485 | if (offset != (bfd_vma) -1) |
13486 | { | |
13487 | insn3 = bfd_get_32 (output_bfd, | |
13488 | contents + offset + 4); | |
13489 | if (insn3 == NOP | |
13490 | || insn3 == CROR_151515 || insn3 == CROR_313131) | |
13491 | { | |
13492 | rel[1].r_offset += 4; | |
13493 | bfd_put_32 (output_bfd, insn2, contents + offset + 4); | |
13494 | insn2 = NOP; | |
13495 | } | |
13496 | bfd_put_32 (output_bfd, insn2, contents + offset); | |
13497 | } | |
13498 | if ((tls_mask & tls_gd) == 0 | |
13499 | && (tls_gd == 0 || toc_symndx != 0)) | |
13500 | { | |
13501 | /* We changed the symbol. Start over in order | |
13502 | to get h, sym, sec etc. right. */ | |
13503 | rel--; | |
13504 | continue; | |
13505 | } | |
13506 | } | |
13507 | break; | |
13508 | ||
13509 | case R_PPC64_TLSGD: | |
13510 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
13511 | { | |
13512 | unsigned int insn2, insn3; | |
13513 | bfd_vma offset = rel->r_offset; | |
13514 | ||
13515 | if ((tls_mask & TLS_TPRELGD) != 0) | |
13516 | { | |
13517 | /* IE */ | |
13518 | r_type = R_PPC64_NONE; | |
13519 | insn2 = 0x7c636a14; /* add 3,3,13 */ | |
13520 | } | |
13521 | else | |
13522 | { | |
13523 | /* LE */ | |
13524 | if (toc_symndx != 0) | |
13525 | { | |
13526 | r_symndx = toc_symndx; | |
13527 | rel->r_addend = toc_addend; | |
13528 | } | |
13529 | r_type = R_PPC64_TPREL16_LO; | |
13530 | rel->r_offset = offset + d_offset; | |
13531 | insn2 = 0x38630000; /* addi 3,3,0 */ | |
13532 | } | |
13533 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
13534 | /* Zap the reloc on the _tls_get_addr call too. */ | |
13535 | BFD_ASSERT (offset == rel[1].r_offset); | |
f58d5a2d | 13536 | rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE); |
3a71aa26 AM |
13537 | insn3 = bfd_get_32 (output_bfd, |
13538 | contents + offset + 4); | |
102890f0 AM |
13539 | if (insn3 == NOP |
13540 | || insn3 == CROR_151515 || insn3 == CROR_313131) | |
13541 | { | |
727fc41e | 13542 | rel->r_offset += 4; |
3a71aa26 AM |
13543 | bfd_put_32 (output_bfd, insn2, contents + offset + 4); |
13544 | insn2 = NOP; | |
102890f0 | 13545 | } |
102890f0 | 13546 | bfd_put_32 (output_bfd, insn2, contents + offset); |
727fc41e | 13547 | if ((tls_mask & TLS_TPRELGD) == 0 && toc_symndx != 0) |
102890f0 | 13548 | { |
102890f0 AM |
13549 | rel--; |
13550 | continue; | |
411e1bfb | 13551 | } |
411e1bfb | 13552 | } |
411e1bfb AM |
13553 | break; |
13554 | ||
727fc41e AM |
13555 | case R_PPC64_TLSLD: |
13556 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) | |
13557 | { | |
13558 | unsigned int insn2, insn3; | |
13559 | bfd_vma offset = rel->r_offset; | |
13560 | ||
13561 | if (toc_symndx) | |
13562 | sec = local_sections[toc_symndx]; | |
13563 | for (r_symndx = 0; | |
13564 | r_symndx < symtab_hdr->sh_info; | |
13565 | r_symndx++) | |
13566 | if (local_sections[r_symndx] == sec) | |
13567 | break; | |
13568 | if (r_symndx >= symtab_hdr->sh_info) | |
cf35638d | 13569 | r_symndx = STN_UNDEF; |
727fc41e | 13570 | rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; |
cf35638d | 13571 | if (r_symndx != STN_UNDEF) |
727fc41e AM |
13572 | rel->r_addend -= (local_syms[r_symndx].st_value |
13573 | + sec->output_offset | |
13574 | + sec->output_section->vma); | |
13575 | ||
13576 | r_type = R_PPC64_TPREL16_LO; | |
13577 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
13578 | rel->r_offset = offset + d_offset; | |
13579 | /* Zap the reloc on the _tls_get_addr call too. */ | |
13580 | BFD_ASSERT (offset == rel[1].r_offset); | |
f58d5a2d | 13581 | rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE); |
727fc41e AM |
13582 | insn2 = 0x38630000; /* addi 3,3,0 */ |
13583 | insn3 = bfd_get_32 (output_bfd, | |
13584 | contents + offset + 4); | |
13585 | if (insn3 == NOP | |
13586 | || insn3 == CROR_151515 || insn3 == CROR_313131) | |
13587 | { | |
13588 | rel->r_offset += 4; | |
13589 | bfd_put_32 (output_bfd, insn2, contents + offset + 4); | |
13590 | insn2 = NOP; | |
13591 | } | |
13592 | bfd_put_32 (output_bfd, insn2, contents + offset); | |
13593 | rel--; | |
13594 | continue; | |
13595 | } | |
13596 | break; | |
13597 | ||
411e1bfb | 13598 | case R_PPC64_DTPMOD64: |
951fd09b AM |
13599 | if (rel + 1 < relend |
13600 | && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64) | |
13601 | && rel[1].r_offset == rel->r_offset + 8) | |
411e1bfb | 13602 | { |
951fd09b AM |
13603 | if ((tls_mask & TLS_GD) == 0) |
13604 | { | |
13605 | rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_NONE); | |
13606 | if ((tls_mask & TLS_TPRELGD) != 0) | |
13607 | r_type = R_PPC64_TPREL64; | |
13608 | else | |
13609 | { | |
4ce794b7 | 13610 | bfd_put_64 (output_bfd, 1, contents + rel->r_offset); |
951fd09b AM |
13611 | r_type = R_PPC64_NONE; |
13612 | } | |
13613 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
13614 | } | |
13615 | } | |
13616 | else | |
13617 | { | |
13618 | if ((tls_mask & TLS_LD) == 0) | |
411e1bfb | 13619 | { |
4ce794b7 | 13620 | bfd_put_64 (output_bfd, 1, contents + rel->r_offset); |
411e1bfb | 13621 | r_type = R_PPC64_NONE; |
951fd09b | 13622 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); |
411e1bfb | 13623 | } |
411e1bfb AM |
13624 | } |
13625 | break; | |
13626 | ||
13627 | case R_PPC64_TPREL64: | |
951fd09b | 13628 | if ((tls_mask & TLS_TPREL) == 0) |
411e1bfb AM |
13629 | { |
13630 | r_type = R_PPC64_NONE; | |
13631 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
13632 | } | |
13633 | break; | |
52a82034 AM |
13634 | |
13635 | case R_PPC64_REL16_HA: | |
13636 | /* If we are generating a non-PIC executable, edit | |
13637 | . 0: addis 2,12,.TOC.-0b@ha | |
13638 | . addi 2,2,.TOC.-0b@l | |
13639 | used by ELFv2 global entry points to set up r2, to | |
13640 | . lis 2,.TOC.@ha | |
13641 | . addi 2,2,.TOC.@l | |
13642 | if .TOC. is in range. */ | |
13643 | if (!info->shared | |
810d4e75 | 13644 | && !info->traditional_format |
52a82034 AM |
13645 | && h != NULL && &h->elf == htab->elf.hgot |
13646 | && rel + 1 < relend | |
13647 | && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_REL16_LO) | |
13648 | && rel[1].r_offset == rel->r_offset + 4 | |
13649 | && rel[1].r_addend == rel->r_addend + 4 | |
13650 | && relocation + 0x80008000 <= 0xffffffff) | |
13651 | { | |
13652 | unsigned int insn1, insn2; | |
13653 | bfd_vma offset = rel->r_offset - d_offset; | |
13654 | insn1 = bfd_get_32 (output_bfd, contents + offset); | |
13655 | insn2 = bfd_get_32 (output_bfd, contents + offset + 4); | |
13656 | if ((insn1 & 0xffff0000) == 0x3c4c0000 /* addis 2,12 */ | |
13657 | && (insn2 & 0xffff0000) == 0x38420000 /* addi 2,2 */) | |
13658 | { | |
13659 | r_type = R_PPC64_ADDR16_HA; | |
13660 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
13661 | rel->r_addend -= d_offset; | |
13662 | rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_ADDR16_LO); | |
13663 | rel[1].r_addend -= d_offset + 4; | |
13664 | bfd_put_32 (output_bfd, 0x3c400000, contents + offset); | |
13665 | } | |
13666 | } | |
13667 | break; | |
411e1bfb AM |
13668 | } |
13669 | ||
13670 | /* Handle other relocations that tweak non-addend part of insn. */ | |
86c76c7b | 13671 | insn = 0; |
b25116a9 AM |
13672 | max_br_offset = 1 << 25; |
13673 | addend = rel->r_addend; | |
bc30df16 | 13674 | reloc_dest = DEST_NORMAL; |
65f38f15 | 13675 | switch (r_type) |
5bd4f169 AM |
13676 | { |
13677 | default: | |
65f38f15 | 13678 | break; |
5bd4f169 | 13679 | |
3b421ab3 AM |
13680 | case R_PPC64_TOCSAVE: |
13681 | if (relocation + addend == (rel->r_offset | |
13682 | + input_section->output_offset | |
13683 | + input_section->output_section->vma) | |
13684 | && tocsave_find (htab, NO_INSERT, | |
13685 | &local_syms, rel, input_bfd)) | |
13686 | { | |
13687 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
13688 | if (insn == NOP | |
13689 | || insn == CROR_151515 || insn == CROR_313131) | |
a078d95a AM |
13690 | bfd_put_32 (input_bfd, |
13691 | STD_R2_0R1 + STK_TOC (htab), | |
3b421ab3 AM |
13692 | contents + rel->r_offset); |
13693 | } | |
13694 | break; | |
13695 | ||
65f38f15 AM |
13696 | /* Branch taken prediction relocations. */ |
13697 | case R_PPC64_ADDR14_BRTAKEN: | |
13698 | case R_PPC64_REL14_BRTAKEN: | |
cedb70c5 KH |
13699 | insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */ |
13700 | /* Fall thru. */ | |
65f38f15 | 13701 | |
86c76c7b | 13702 | /* Branch not taken prediction relocations. */ |
65f38f15 AM |
13703 | case R_PPC64_ADDR14_BRNTAKEN: |
13704 | case R_PPC64_REL14_BRNTAKEN: | |
411e1bfb AM |
13705 | insn |= bfd_get_32 (output_bfd, |
13706 | contents + rel->r_offset) & ~(0x01 << 21); | |
b25116a9 | 13707 | /* Fall thru. */ |
86c76c7b | 13708 | |
b25116a9 AM |
13709 | case R_PPC64_REL14: |
13710 | max_br_offset = 1 << 15; | |
13711 | /* Fall thru. */ | |
5bd4f169 | 13712 | |
65f38f15 | 13713 | case R_PPC64_REL24: |
ad8e1ba5 AM |
13714 | /* Calls to functions with a different TOC, such as calls to |
13715 | shared objects, need to alter the TOC pointer. This is | |
13716 | done using a linkage stub. A REL24 branching to these | |
13717 | linkage stubs needs to be followed by a nop, as the nop | |
13718 | will be replaced with an instruction to restore the TOC | |
13719 | base pointer. */ | |
8387904d | 13720 | fdh = h; |
b31867b6 AM |
13721 | if (h != NULL |
13722 | && h->oh != NULL | |
13723 | && h->oh->is_func_descriptor) | |
13724 | fdh = ppc_follow_link (h->oh); | |
31c76678 DK |
13725 | stub_entry = ppc_get_stub_entry (input_section, sec, fdh, &orig_rel, |
13726 | htab); | |
6abec6bc | 13727 | if (stub_entry != NULL |
ad8e1ba5 | 13728 | && (stub_entry->stub_type == ppc_stub_plt_call |
794e51c0 | 13729 | || stub_entry->stub_type == ppc_stub_plt_call_r2save |
ad8e1ba5 AM |
13730 | || stub_entry->stub_type == ppc_stub_plt_branch_r2off |
13731 | || stub_entry->stub_type == ppc_stub_long_branch_r2off)) | |
41bd81ab | 13732 | { |
b25116a9 | 13733 | bfd_boolean can_plt_call = FALSE; |
721956f4 | 13734 | |
ba8ca3e7 AM |
13735 | /* All of these stubs will modify r2, so there must be a |
13736 | branch and link followed by a nop. The nop is | |
13737 | replaced by an insn to restore r2. */ | |
eea6121a | 13738 | if (rel->r_offset + 8 <= input_section->size) |
41bd81ab | 13739 | { |
ba8ca3e7 AM |
13740 | unsigned long br; |
13741 | ||
13742 | br = bfd_get_32 (input_bfd, | |
13743 | contents + rel->r_offset); | |
13744 | if ((br & 1) != 0) | |
41bd81ab | 13745 | { |
ba8ca3e7 AM |
13746 | unsigned long nop; |
13747 | ||
13748 | nop = bfd_get_32 (input_bfd, | |
13749 | contents + rel->r_offset + 4); | |
13750 | if (nop == NOP | |
13751 | || nop == CROR_151515 || nop == CROR_313131) | |
a7f2871e | 13752 | { |
ba8ca3e7 AM |
13753 | if (h != NULL |
13754 | && (h == htab->tls_get_addr_fd | |
13755 | || h == htab->tls_get_addr) | |
e7d1c40c | 13756 | && !htab->params->no_tls_get_addr_opt) |
ba8ca3e7 AM |
13757 | { |
13758 | /* Special stub used, leave nop alone. */ | |
13759 | } | |
13760 | else | |
a078d95a AM |
13761 | bfd_put_32 (input_bfd, |
13762 | LD_R2_0R1 + STK_TOC (htab), | |
ba8ca3e7 AM |
13763 | contents + rel->r_offset + 4); |
13764 | can_plt_call = TRUE; | |
a7f2871e | 13765 | } |
41bd81ab | 13766 | } |
5bd4f169 | 13767 | } |
721956f4 | 13768 | |
ba8ca3e7 | 13769 | if (!can_plt_call && h != NULL) |
721956f4 | 13770 | { |
ba8ca3e7 AM |
13771 | const char *name = h->elf.root.root.string; |
13772 | ||
13773 | if (*name == '.') | |
13774 | ++name; | |
13775 | ||
13776 | if (strncmp (name, "__libc_start_main", 17) == 0 | |
13777 | && (name[17] == 0 || name[17] == '@')) | |
6ab189d5 | 13778 | { |
ba8ca3e7 AM |
13779 | /* Allow crt1 branch to go via a toc adjusting |
13780 | stub. Other calls that never return could do | |
13781 | the same, if we could detect such. */ | |
b25116a9 | 13782 | can_plt_call = TRUE; |
6ab189d5 | 13783 | } |
ba8ca3e7 AM |
13784 | } |
13785 | ||
13786 | if (!can_plt_call) | |
13787 | { | |
13788 | /* g++ as of 20130507 emits self-calls without a | |
13789 | following nop. This is arguably wrong since we | |
13790 | have conflicting information. On the one hand a | |
13791 | global symbol and on the other a local call | |
13792 | sequence, but don't error for this special case. | |
13793 | It isn't possible to cheaply verify we have | |
13794 | exactly such a call. Allow all calls to the same | |
13795 | section. */ | |
13796 | asection *code_sec = sec; | |
13797 | ||
13798 | if (get_opd_info (sec) != NULL) | |
ad8e1ba5 | 13799 | { |
ba8ca3e7 AM |
13800 | bfd_vma off = (relocation + addend |
13801 | - sec->output_section->vma | |
13802 | - sec->output_offset); | |
bc30df16 | 13803 | |
ba8ca3e7 | 13804 | opd_entry_value (sec, off, &code_sec, NULL, FALSE); |
ad8e1ba5 | 13805 | } |
ba8ca3e7 AM |
13806 | if (code_sec == input_section) |
13807 | can_plt_call = TRUE; | |
13808 | } | |
13809 | ||
13810 | if (!can_plt_call) | |
13811 | { | |
4805fc55 AM |
13812 | if (stub_entry->stub_type == ppc_stub_plt_call |
13813 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
13814 | info->callbacks->einfo | |
13815 | (_("%P: %H: call to `%T' lacks nop, can't restore toc; " | |
13816 | "recompile with -fPIC\n"), | |
13817 | input_bfd, input_section, rel->r_offset, sym_name); | |
13818 | else | |
13819 | info->callbacks->einfo | |
13820 | (_("%P: %H: call to `%T' lacks nop, can't restore toc; " | |
13821 | "(-mcmodel=small toc adjust stub)\n"), | |
13822 | input_bfd, input_section, rel->r_offset, sym_name); | |
ba8ca3e7 AM |
13823 | |
13824 | bfd_set_error (bfd_error_bad_value); | |
13825 | ret = FALSE; | |
721956f4 AM |
13826 | } |
13827 | ||
b25116a9 | 13828 | if (can_plt_call |
794e51c0 AM |
13829 | && (stub_entry->stub_type == ppc_stub_plt_call |
13830 | || stub_entry->stub_type == ppc_stub_plt_call_r2save)) | |
b25116a9 AM |
13831 | unresolved_reloc = FALSE; |
13832 | } | |
13833 | ||
6abec6bc AM |
13834 | if ((stub_entry == NULL |
13835 | || stub_entry->stub_type == ppc_stub_long_branch | |
13836 | || stub_entry->stub_type == ppc_stub_plt_branch) | |
8387904d AM |
13837 | && get_opd_info (sec) != NULL) |
13838 | { | |
13839 | /* The branch destination is the value of the opd entry. */ | |
4cc603a5 AM |
13840 | bfd_vma off = (relocation + addend |
13841 | - sec->output_section->vma | |
13842 | - sec->output_offset); | |
aef36ac1 | 13843 | bfd_vma dest = opd_entry_value (sec, off, NULL, NULL, FALSE); |
8387904d AM |
13844 | if (dest != (bfd_vma) -1) |
13845 | { | |
13846 | relocation = dest; | |
13847 | addend = 0; | |
bc30df16 | 13848 | reloc_dest = DEST_OPD; |
8387904d AM |
13849 | } |
13850 | } | |
13851 | ||
b25116a9 AM |
13852 | /* If the branch is out of reach we ought to have a long |
13853 | branch stub. */ | |
13854 | from = (rel->r_offset | |
13855 | + input_section->output_offset | |
13856 | + input_section->output_section->vma); | |
13857 | ||
6911b7dc AM |
13858 | relocation += PPC64_LOCAL_ENTRY_OFFSET (fdh |
13859 | ? fdh->elf.other | |
13860 | : sym->st_other); | |
13861 | ||
6abec6bc AM |
13862 | if (stub_entry != NULL |
13863 | && (stub_entry->stub_type == ppc_stub_long_branch | |
13864 | || stub_entry->stub_type == ppc_stub_plt_branch) | |
13865 | && (r_type == R_PPC64_ADDR14_BRTAKEN | |
13866 | || r_type == R_PPC64_ADDR14_BRNTAKEN | |
13867 | || (relocation + addend - from + max_br_offset | |
13868 | < 2 * max_br_offset))) | |
13869 | /* Don't use the stub if this branch is in range. */ | |
13870 | stub_entry = NULL; | |
b25116a9 AM |
13871 | |
13872 | if (stub_entry != NULL) | |
13873 | { | |
13874 | /* Munge up the value and addend so that we call the stub | |
13875 | rather than the procedure directly. */ | |
13876 | relocation = (stub_entry->stub_offset | |
13877 | + stub_entry->stub_sec->output_offset | |
13878 | + stub_entry->stub_sec->output_section->vma); | |
13879 | addend = 0; | |
bc30df16 | 13880 | reloc_dest = DEST_STUB; |
3b421ab3 | 13881 | |
794e51c0 AM |
13882 | if ((stub_entry->stub_type == ppc_stub_plt_call |
13883 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
13884 | && (ALWAYS_EMIT_R2SAVE | |
13885 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
3b421ab3 AM |
13886 | && rel + 1 < relend |
13887 | && rel[1].r_offset == rel->r_offset + 4 | |
13888 | && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOCSAVE) | |
13889 | relocation += 4; | |
b25116a9 AM |
13890 | } |
13891 | ||
13892 | if (insn != 0) | |
13893 | { | |
794e51c0 | 13894 | if (is_isa_v2) |
721956f4 | 13895 | { |
b25116a9 AM |
13896 | /* Set 'a' bit. This is 0b00010 in BO field for branch |
13897 | on CR(BI) insns (BO == 001at or 011at), and 0b01000 | |
13898 | for branch on CTR insns (BO == 1a00t or 1a01t). */ | |
13899 | if ((insn & (0x14 << 21)) == (0x04 << 21)) | |
13900 | insn |= 0x02 << 21; | |
13901 | else if ((insn & (0x14 << 21)) == (0x10 << 21)) | |
13902 | insn |= 0x08 << 21; | |
13903 | else | |
13904 | break; | |
13905 | } | |
13906 | else | |
13907 | { | |
13908 | /* Invert 'y' bit if not the default. */ | |
4cc603a5 | 13909 | if ((bfd_signed_vma) (relocation + addend - from) < 0) |
b25116a9 | 13910 | insn ^= 0x01 << 21; |
721956f4 | 13911 | } |
b25116a9 AM |
13912 | |
13913 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset); | |
5bd4f169 | 13914 | } |
e86ce104 | 13915 | |
06da1e8e AM |
13916 | /* NOP out calls to undefined weak functions. |
13917 | We can thus call a weak function without first | |
13918 | checking whether the function is defined. */ | |
b25116a9 | 13919 | else if (h != NULL |
039b3fef | 13920 | && h->elf.root.type == bfd_link_hash_undefweak |
766bc656 | 13921 | && h->elf.dynindx == -1 |
b25116a9 AM |
13922 | && r_type == R_PPC64_REL24 |
13923 | && relocation == 0 | |
4cc603a5 | 13924 | && addend == 0) |
e86ce104 | 13925 | { |
06da1e8e AM |
13926 | bfd_put_32 (output_bfd, NOP, contents + rel->r_offset); |
13927 | continue; | |
e86ce104 | 13928 | } |
65f38f15 AM |
13929 | break; |
13930 | } | |
5bd4f169 | 13931 | |
65f38f15 | 13932 | /* Set `addend'. */ |
411e1bfb | 13933 | tls_type = 0; |
65f38f15 AM |
13934 | switch (r_type) |
13935 | { | |
13936 | default: | |
25f53a85 | 13937 | info->callbacks->einfo |
bc30df16 | 13938 | (_("%P: %B: unknown relocation type %d for `%T'\n"), |
d003868e | 13939 | input_bfd, (int) r_type, sym_name); |
5bd4f169 | 13940 | |
65f38f15 | 13941 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 13942 | ret = FALSE; |
65f38f15 | 13943 | continue; |
5bd4f169 | 13944 | |
65f38f15 | 13945 | case R_PPC64_NONE: |
411e1bfb | 13946 | case R_PPC64_TLS: |
727fc41e AM |
13947 | case R_PPC64_TLSGD: |
13948 | case R_PPC64_TLSLD: | |
3b421ab3 | 13949 | case R_PPC64_TOCSAVE: |
04c9666a AM |
13950 | case R_PPC64_GNU_VTINHERIT: |
13951 | case R_PPC64_GNU_VTENTRY: | |
65f38f15 | 13952 | continue; |
5bd4f169 AM |
13953 | |
13954 | /* GOT16 relocations. Like an ADDR16 using the symbol's | |
13955 | address in the GOT as relocation value instead of the | |
411e1bfb | 13956 | symbol's value itself. Also, create a GOT entry for the |
5bd4f169 | 13957 | symbol and put the symbol value there. */ |
411e1bfb AM |
13958 | case R_PPC64_GOT_TLSGD16: |
13959 | case R_PPC64_GOT_TLSGD16_LO: | |
13960 | case R_PPC64_GOT_TLSGD16_HI: | |
13961 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b | 13962 | tls_type = TLS_TLS | TLS_GD; |
411e1bfb AM |
13963 | goto dogot; |
13964 | ||
13965 | case R_PPC64_GOT_TLSLD16: | |
13966 | case R_PPC64_GOT_TLSLD16_LO: | |
13967 | case R_PPC64_GOT_TLSLD16_HI: | |
13968 | case R_PPC64_GOT_TLSLD16_HA: | |
951fd09b | 13969 | tls_type = TLS_TLS | TLS_LD; |
411e1bfb AM |
13970 | goto dogot; |
13971 | ||
13972 | case R_PPC64_GOT_TPREL16_DS: | |
13973 | case R_PPC64_GOT_TPREL16_LO_DS: | |
13974 | case R_PPC64_GOT_TPREL16_HI: | |
13975 | case R_PPC64_GOT_TPREL16_HA: | |
13976 | tls_type = TLS_TLS | TLS_TPREL; | |
13977 | goto dogot; | |
13978 | ||
13979 | case R_PPC64_GOT_DTPREL16_DS: | |
13980 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
13981 | case R_PPC64_GOT_DTPREL16_HI: | |
13982 | case R_PPC64_GOT_DTPREL16_HA: | |
13983 | tls_type = TLS_TLS | TLS_DTPREL; | |
13984 | goto dogot; | |
13985 | ||
65f38f15 AM |
13986 | case R_PPC64_GOT16: |
13987 | case R_PPC64_GOT16_LO: | |
13988 | case R_PPC64_GOT16_HI: | |
13989 | case R_PPC64_GOT16_HA: | |
13990 | case R_PPC64_GOT16_DS: | |
13991 | case R_PPC64_GOT16_LO_DS: | |
411e1bfb | 13992 | dogot: |
5bd4f169 AM |
13993 | { |
13994 | /* Relocation is to the entry for this symbol in the global | |
13995 | offset table. */ | |
e717da7e | 13996 | asection *got; |
d881513a | 13997 | bfd_vma *offp; |
5bd4f169 | 13998 | bfd_vma off; |
d881513a | 13999 | unsigned long indx = 0; |
927be08e | 14000 | struct got_entry *ent; |
65f38f15 | 14001 | |
d881513a AM |
14002 | if (tls_type == (TLS_TLS | TLS_LD) |
14003 | && (h == NULL | |
f5385ebf | 14004 | || !h->elf.def_dynamic)) |
927be08e | 14005 | ent = ppc64_tlsld_got (input_bfd); |
411e1bfb | 14006 | else |
5bd4f169 | 14007 | { |
5bd4f169 | 14008 | |
d881513a AM |
14009 | if (h != NULL) |
14010 | { | |
14011 | bfd_boolean dyn = htab->elf.dynamic_sections_created; | |
039b3fef AM |
14012 | if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, |
14013 | &h->elf) | |
d881513a | 14014 | || (info->shared |
afe397ea | 14015 | && SYMBOL_REFERENCES_LOCAL (info, &h->elf))) |
d881513a AM |
14016 | /* This is actually a static link, or it is a |
14017 | -Bsymbolic link and the symbol is defined | |
14018 | locally, or the symbol was forced to be local | |
14019 | because of a version file. */ | |
14020 | ; | |
14021 | else | |
14022 | { | |
14acf4dc | 14023 | BFD_ASSERT (h->elf.dynindx != -1); |
039b3fef | 14024 | indx = h->elf.dynindx; |
d881513a AM |
14025 | unresolved_reloc = FALSE; |
14026 | } | |
039b3fef | 14027 | ent = h->elf.got.glist; |
d881513a | 14028 | } |
411e1bfb | 14029 | else |
5bd4f169 | 14030 | { |
d881513a AM |
14031 | if (local_got_ents == NULL) |
14032 | abort (); | |
14033 | ent = local_got_ents[r_symndx]; | |
5bd4f169 | 14034 | } |
d881513a AM |
14035 | |
14036 | for (; ent != NULL; ent = ent->next) | |
31c76678 | 14037 | if (ent->addend == orig_rel.r_addend |
e717da7e | 14038 | && ent->owner == input_bfd |
d881513a AM |
14039 | && ent->tls_type == tls_type) |
14040 | break; | |
5bd4f169 | 14041 | } |
411e1bfb | 14042 | |
927be08e AM |
14043 | if (ent == NULL) |
14044 | abort (); | |
14045 | if (ent->is_indirect) | |
14046 | ent = ent->got.ent; | |
14047 | offp = &ent->got.offset; | |
14048 | got = ppc64_elf_tdata (ent->owner)->got; | |
e717da7e AM |
14049 | if (got == NULL) |
14050 | abort (); | |
14051 | ||
411e1bfb AM |
14052 | /* The offset must always be a multiple of 8. We use the |
14053 | least significant bit to record whether we have already | |
14054 | processed this entry. */ | |
d881513a | 14055 | off = *offp; |
411e1bfb AM |
14056 | if ((off & 1) != 0) |
14057 | off &= ~1; | |
5bd4f169 AM |
14058 | else |
14059 | { | |
411e1bfb AM |
14060 | /* Generate relocs for the dynamic linker, except in |
14061 | the case of TLSLD where we'll use one entry per | |
14062 | module. */ | |
25f23106 AM |
14063 | asection *relgot; |
14064 | bfd_boolean ifunc; | |
e717da7e | 14065 | |
d881513a | 14066 | *offp = off | 1; |
25f23106 AM |
14067 | relgot = NULL; |
14068 | ifunc = (h != NULL | |
14069 | ? h->elf.type == STT_GNU_IFUNC | |
14070 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC); | |
19e08130 | 14071 | if (ifunc) |
33e44f2e | 14072 | relgot = htab->elf.irelplt; |
19e08130 AM |
14073 | else if ((info->shared || indx != 0) |
14074 | && (h == NULL | |
14075 | || (tls_type == (TLS_TLS | TLS_LD) | |
14076 | && !h->elf.def_dynamic) | |
14077 | || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT | |
14078 | || h->elf.root.type != bfd_link_hash_undefweak)) | |
14079 | relgot = ppc64_elf_tdata (ent->owner)->relgot; | |
25f23106 | 14080 | if (relgot != NULL) |
5bd4f169 | 14081 | { |
e717da7e AM |
14082 | outrel.r_offset = (got->output_section->vma |
14083 | + got->output_offset | |
411e1bfb | 14084 | + off); |
4cc603a5 | 14085 | outrel.r_addend = addend; |
d881513a | 14086 | if (tls_type & (TLS_LD | TLS_GD)) |
5bd4f169 | 14087 | { |
411e1bfb | 14088 | outrel.r_addend = 0; |
e515b051 | 14089 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPMOD64); |
d881513a AM |
14090 | if (tls_type == (TLS_TLS | TLS_GD)) |
14091 | { | |
e717da7e AM |
14092 | loc = relgot->contents; |
14093 | loc += (relgot->reloc_count++ | |
d881513a AM |
14094 | * sizeof (Elf64_External_Rela)); |
14095 | bfd_elf64_swap_reloca_out (output_bfd, | |
14096 | &outrel, loc); | |
e515b051 | 14097 | outrel.r_offset += 8; |
4cc603a5 | 14098 | outrel.r_addend = addend; |
d881513a AM |
14099 | outrel.r_info |
14100 | = ELF64_R_INFO (indx, R_PPC64_DTPREL64); | |
d881513a | 14101 | } |
411e1bfb | 14102 | } |
951fd09b | 14103 | else if (tls_type == (TLS_TLS | TLS_DTPREL)) |
411e1bfb | 14104 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64); |
951fd09b | 14105 | else if (tls_type == (TLS_TLS | TLS_TPREL)) |
411e1bfb | 14106 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_TPREL64); |
25f23106 AM |
14107 | else if (indx != 0) |
14108 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT); | |
14109 | else | |
81407a69 | 14110 | { |
25f23106 AM |
14111 | if (ifunc) |
14112 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE); | |
14113 | else | |
14114 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
81407a69 AM |
14115 | |
14116 | /* Write the .got section contents for the sake | |
14117 | of prelink. */ | |
e717da7e | 14118 | loc = got->contents + off; |
23fbd6fa JJ |
14119 | bfd_put_64 (output_bfd, outrel.r_addend + relocation, |
14120 | loc); | |
81407a69 | 14121 | } |
81407a69 AM |
14122 | |
14123 | if (indx == 0 && tls_type != (TLS_TLS | TLS_LD)) | |
e515b051 AM |
14124 | { |
14125 | outrel.r_addend += relocation; | |
14126 | if (tls_type & (TLS_GD | TLS_DTPREL | TLS_TPREL)) | |
989f9879 AM |
14127 | { |
14128 | if (htab->elf.tls_sec == NULL) | |
14129 | outrel.r_addend = 0; | |
14130 | else | |
14131 | outrel.r_addend -= htab->elf.tls_sec->vma; | |
14132 | } | |
e515b051 | 14133 | } |
e717da7e AM |
14134 | loc = relgot->contents; |
14135 | loc += (relgot->reloc_count++ | |
411e1bfb AM |
14136 | * sizeof (Elf64_External_Rela)); |
14137 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); | |
14138 | } | |
14139 | ||
ad8e1ba5 | 14140 | /* Init the .got section contents here if we're not |
81407a69 | 14141 | emitting a reloc. */ |
d881513a | 14142 | else |
411e1bfb | 14143 | { |
4cc603a5 | 14144 | relocation += addend; |
7b609f53 AM |
14145 | if (tls_type == (TLS_TLS | TLS_LD)) |
14146 | relocation = 1; | |
14147 | else if (tls_type != 0) | |
411e1bfb | 14148 | { |
989f9879 AM |
14149 | if (htab->elf.tls_sec == NULL) |
14150 | relocation = 0; | |
14151 | else | |
14152 | { | |
14153 | relocation -= htab->elf.tls_sec->vma + DTP_OFFSET; | |
14154 | if (tls_type == (TLS_TLS | TLS_TPREL)) | |
14155 | relocation += DTP_OFFSET - TP_OFFSET; | |
14156 | } | |
5bd4f169 | 14157 | |
7b609f53 AM |
14158 | if (tls_type == (TLS_TLS | TLS_GD)) |
14159 | { | |
14160 | bfd_put_64 (output_bfd, relocation, | |
e717da7e | 14161 | got->contents + off + 8); |
7b609f53 AM |
14162 | relocation = 1; |
14163 | } | |
411e1bfb | 14164 | } |
7b609f53 | 14165 | |
411e1bfb | 14166 | bfd_put_64 (output_bfd, relocation, |
e717da7e | 14167 | got->contents + off); |
5bd4f169 AM |
14168 | } |
14169 | } | |
14170 | ||
65f38f15 AM |
14171 | if (off >= (bfd_vma) -2) |
14172 | abort (); | |
14173 | ||
bf102f86 AM |
14174 | relocation = got->output_section->vma + got->output_offset + off; |
14175 | addend = -(TOCstart + htab->stub_group[input_section->id].toc_off); | |
5bd4f169 | 14176 | } |
65f38f15 AM |
14177 | break; |
14178 | ||
14179 | case R_PPC64_PLT16_HA: | |
14180 | case R_PPC64_PLT16_HI: | |
14181 | case R_PPC64_PLT16_LO: | |
14182 | case R_PPC64_PLT32: | |
14183 | case R_PPC64_PLT64: | |
14184 | /* Relocation is to the entry for this symbol in the | |
14185 | procedure linkage table. */ | |
14186 | ||
14187 | /* Resolve a PLT reloc against a local symbol directly, | |
14188 | without using the procedure linkage table. */ | |
14189 | if (h == NULL) | |
14190 | break; | |
14191 | ||
411e1bfb AM |
14192 | /* It's possible that we didn't make a PLT entry for this |
14193 | symbol. This happens when statically linking PIC code, | |
14194 | or when using -Bsymbolic. Go find a match if there is a | |
14195 | PLT entry. */ | |
33e44f2e | 14196 | if (htab->elf.splt != NULL) |
65f38f15 | 14197 | { |
411e1bfb | 14198 | struct plt_entry *ent; |
039b3fef | 14199 | for (ent = h->elf.plt.plist; ent != NULL; ent = ent->next) |
a345bc8d AM |
14200 | if (ent->plt.offset != (bfd_vma) -1 |
14201 | && ent->addend == orig_rel.r_addend) | |
411e1bfb | 14202 | { |
33e44f2e AM |
14203 | relocation = (htab->elf.splt->output_section->vma |
14204 | + htab->elf.splt->output_offset | |
411e1bfb AM |
14205 | + ent->plt.offset); |
14206 | unresolved_reloc = FALSE; | |
a345bc8d | 14207 | break; |
411e1bfb | 14208 | } |
65f38f15 | 14209 | } |
65f38f15 | 14210 | break; |
5bd4f169 | 14211 | |
0b13192e AM |
14212 | case R_PPC64_TOC: |
14213 | /* Relocation value is TOC base. */ | |
14214 | relocation = TOCstart; | |
cf35638d | 14215 | if (r_symndx == STN_UNDEF) |
0b13192e | 14216 | relocation += htab->stub_group[input_section->id].toc_off; |
8517fae7 AM |
14217 | else if (unresolved_reloc) |
14218 | ; | |
14219 | else if (sec != NULL && sec->id <= htab->top_id) | |
0b13192e AM |
14220 | relocation += htab->stub_group[sec->id].toc_off; |
14221 | else | |
14222 | unresolved_reloc = TRUE; | |
ab96bf03 | 14223 | goto dodyn; |
0b13192e | 14224 | |
5bd4f169 AM |
14225 | /* TOC16 relocs. We want the offset relative to the TOC base, |
14226 | which is the address of the start of the TOC plus 0x8000. | |
14227 | The TOC consists of sections .got, .toc, .tocbss, and .plt, | |
14228 | in this order. */ | |
65f38f15 AM |
14229 | case R_PPC64_TOC16: |
14230 | case R_PPC64_TOC16_LO: | |
14231 | case R_PPC64_TOC16_HI: | |
14232 | case R_PPC64_TOC16_DS: | |
14233 | case R_PPC64_TOC16_LO_DS: | |
14234 | case R_PPC64_TOC16_HA: | |
ad8e1ba5 | 14235 | addend -= TOCstart + htab->stub_group[input_section->id].toc_off; |
5bd4f169 AM |
14236 | break; |
14237 | ||
14238 | /* Relocate against the beginning of the section. */ | |
65f38f15 AM |
14239 | case R_PPC64_SECTOFF: |
14240 | case R_PPC64_SECTOFF_LO: | |
14241 | case R_PPC64_SECTOFF_HI: | |
14242 | case R_PPC64_SECTOFF_DS: | |
14243 | case R_PPC64_SECTOFF_LO_DS: | |
14244 | case R_PPC64_SECTOFF_HA: | |
4ce794b7 | 14245 | if (sec != NULL) |
65f38f15 | 14246 | addend -= sec->output_section->vma; |
5bd4f169 AM |
14247 | break; |
14248 | ||
25f23106 AM |
14249 | case R_PPC64_REL16: |
14250 | case R_PPC64_REL16_LO: | |
14251 | case R_PPC64_REL16_HI: | |
14252 | case R_PPC64_REL16_HA: | |
14253 | break; | |
14254 | ||
721956f4 AM |
14255 | case R_PPC64_REL14: |
14256 | case R_PPC64_REL14_BRNTAKEN: | |
14257 | case R_PPC64_REL14_BRTAKEN: | |
5d1634d7 AM |
14258 | case R_PPC64_REL24: |
14259 | break; | |
14260 | ||
411e1bfb AM |
14261 | case R_PPC64_TPREL16: |
14262 | case R_PPC64_TPREL16_LO: | |
14263 | case R_PPC64_TPREL16_HI: | |
14264 | case R_PPC64_TPREL16_HA: | |
14265 | case R_PPC64_TPREL16_DS: | |
14266 | case R_PPC64_TPREL16_LO_DS: | |
f9c6b907 AM |
14267 | case R_PPC64_TPREL16_HIGH: |
14268 | case R_PPC64_TPREL16_HIGHA: | |
411e1bfb AM |
14269 | case R_PPC64_TPREL16_HIGHER: |
14270 | case R_PPC64_TPREL16_HIGHERA: | |
14271 | case R_PPC64_TPREL16_HIGHEST: | |
14272 | case R_PPC64_TPREL16_HIGHESTA: | |
766bc656 AM |
14273 | if (h != NULL |
14274 | && h->elf.root.type == bfd_link_hash_undefweak | |
14275 | && h->elf.dynindx == -1) | |
14276 | { | |
14277 | /* Make this relocation against an undefined weak symbol | |
14278 | resolve to zero. This is really just a tweak, since | |
14279 | code using weak externs ought to check that they are | |
14280 | defined before using them. */ | |
14281 | bfd_byte *p = contents + rel->r_offset - d_offset; | |
14282 | ||
14283 | insn = bfd_get_32 (output_bfd, p); | |
14284 | insn = _bfd_elf_ppc_at_tprel_transform (insn, 13); | |
14285 | if (insn != 0) | |
14286 | bfd_put_32 (output_bfd, insn, p); | |
14287 | break; | |
14288 | } | |
989f9879 AM |
14289 | if (htab->elf.tls_sec != NULL) |
14290 | addend -= htab->elf.tls_sec->vma + TP_OFFSET; | |
411e1bfb AM |
14291 | if (info->shared) |
14292 | /* The TPREL16 relocs shouldn't really be used in shared | |
14293 | libs as they will result in DT_TEXTREL being set, but | |
14294 | support them anyway. */ | |
14295 | goto dodyn; | |
14296 | break; | |
14297 | ||
14298 | case R_PPC64_DTPREL16: | |
14299 | case R_PPC64_DTPREL16_LO: | |
14300 | case R_PPC64_DTPREL16_HI: | |
14301 | case R_PPC64_DTPREL16_HA: | |
14302 | case R_PPC64_DTPREL16_DS: | |
14303 | case R_PPC64_DTPREL16_LO_DS: | |
f9c6b907 AM |
14304 | case R_PPC64_DTPREL16_HIGH: |
14305 | case R_PPC64_DTPREL16_HIGHA: | |
411e1bfb AM |
14306 | case R_PPC64_DTPREL16_HIGHER: |
14307 | case R_PPC64_DTPREL16_HIGHERA: | |
14308 | case R_PPC64_DTPREL16_HIGHEST: | |
14309 | case R_PPC64_DTPREL16_HIGHESTA: | |
989f9879 AM |
14310 | if (htab->elf.tls_sec != NULL) |
14311 | addend -= htab->elf.tls_sec->vma + DTP_OFFSET; | |
411e1bfb AM |
14312 | break; |
14313 | ||
45965137 AM |
14314 | case R_PPC64_ADDR64_LOCAL: |
14315 | addend += PPC64_LOCAL_ENTRY_OFFSET (h != NULL | |
14316 | ? h->elf.other | |
14317 | : sym->st_other); | |
14318 | break; | |
14319 | ||
e515b051 AM |
14320 | case R_PPC64_DTPMOD64: |
14321 | relocation = 1; | |
14322 | addend = 0; | |
14323 | goto dodyn; | |
14324 | ||
411e1bfb | 14325 | case R_PPC64_TPREL64: |
989f9879 AM |
14326 | if (htab->elf.tls_sec != NULL) |
14327 | addend -= htab->elf.tls_sec->vma + TP_OFFSET; | |
411e1bfb AM |
14328 | goto dodyn; |
14329 | ||
14330 | case R_PPC64_DTPREL64: | |
989f9879 AM |
14331 | if (htab->elf.tls_sec != NULL) |
14332 | addend -= htab->elf.tls_sec->vma + DTP_OFFSET; | |
411e1bfb AM |
14333 | /* Fall thru */ |
14334 | ||
65f38f15 AM |
14335 | /* Relocations that may need to be propagated if this is a |
14336 | dynamic object. */ | |
04c9666a | 14337 | case R_PPC64_REL30: |
65f38f15 AM |
14338 | case R_PPC64_REL32: |
14339 | case R_PPC64_REL64: | |
14340 | case R_PPC64_ADDR14: | |
14341 | case R_PPC64_ADDR14_BRNTAKEN: | |
14342 | case R_PPC64_ADDR14_BRTAKEN: | |
14343 | case R_PPC64_ADDR16: | |
14344 | case R_PPC64_ADDR16_DS: | |
14345 | case R_PPC64_ADDR16_HA: | |
14346 | case R_PPC64_ADDR16_HI: | |
f9c6b907 AM |
14347 | case R_PPC64_ADDR16_HIGH: |
14348 | case R_PPC64_ADDR16_HIGHA: | |
65f38f15 AM |
14349 | case R_PPC64_ADDR16_HIGHER: |
14350 | case R_PPC64_ADDR16_HIGHERA: | |
14351 | case R_PPC64_ADDR16_HIGHEST: | |
14352 | case R_PPC64_ADDR16_HIGHESTA: | |
14353 | case R_PPC64_ADDR16_LO: | |
14354 | case R_PPC64_ADDR16_LO_DS: | |
14355 | case R_PPC64_ADDR24: | |
65f38f15 AM |
14356 | case R_PPC64_ADDR32: |
14357 | case R_PPC64_ADDR64: | |
14358 | case R_PPC64_UADDR16: | |
14359 | case R_PPC64_UADDR32: | |
14360 | case R_PPC64_UADDR64: | |
411e1bfb | 14361 | dodyn: |
5d1634d7 | 14362 | if ((input_section->flags & SEC_ALLOC) == 0) |
ec338859 AM |
14363 | break; |
14364 | ||
41bd81ab AM |
14365 | if (NO_OPD_RELOCS && is_opd) |
14366 | break; | |
14367 | ||
65f38f15 | 14368 | if ((info->shared |
4e795f50 | 14369 | && (h == NULL |
039b3fef AM |
14370 | || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT |
14371 | || h->elf.root.type != bfd_link_hash_undefweak) | |
1d483afe | 14372 | && (must_be_dyn_reloc (info, r_type) |
039b3fef | 14373 | || !SYMBOL_CALLS_LOCAL (info, &h->elf))) |
f4656909 AM |
14374 | || (ELIMINATE_COPY_RELOCS |
14375 | && !info->shared | |
65f38f15 | 14376 | && h != NULL |
039b3fef | 14377 | && h->elf.dynindx != -1 |
f5385ebf | 14378 | && !h->elf.non_got_ref |
25f23106 AM |
14379 | && !h->elf.def_regular) |
14380 | || (!info->shared | |
14381 | && (h != NULL | |
14382 | ? h->elf.type == STT_GNU_IFUNC | |
14383 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC))) | |
65f38f15 | 14384 | { |
b34976b6 | 14385 | bfd_boolean skip, relocate; |
65f38f15 | 14386 | asection *sreloc; |
1cf1f670 | 14387 | bfd_vma out_off; |
65f38f15 AM |
14388 | |
14389 | /* When generating a dynamic object, these relocations | |
14390 | are copied into the output file to be resolved at run | |
14391 | time. */ | |
14392 | ||
b34976b6 AM |
14393 | skip = FALSE; |
14394 | relocate = FALSE; | |
65f38f15 | 14395 | |
1cf1f670 AM |
14396 | out_off = _bfd_elf_section_offset (output_bfd, info, |
14397 | input_section, rel->r_offset); | |
14398 | if (out_off == (bfd_vma) -1) | |
b34976b6 | 14399 | skip = TRUE; |
1cf1f670 | 14400 | else if (out_off == (bfd_vma) -2) |
b34976b6 | 14401 | skip = TRUE, relocate = TRUE; |
1cf1f670 AM |
14402 | out_off += (input_section->output_section->vma |
14403 | + input_section->output_offset); | |
14404 | outrel.r_offset = out_off; | |
411e1bfb | 14405 | outrel.r_addend = rel->r_addend; |
65f38f15 | 14406 | |
1cf1f670 AM |
14407 | /* Optimize unaligned reloc use. */ |
14408 | if ((r_type == R_PPC64_ADDR64 && (out_off & 7) != 0) | |
14409 | || (r_type == R_PPC64_UADDR64 && (out_off & 7) == 0)) | |
14410 | r_type ^= R_PPC64_ADDR64 ^ R_PPC64_UADDR64; | |
14411 | else if ((r_type == R_PPC64_ADDR32 && (out_off & 3) != 0) | |
14412 | || (r_type == R_PPC64_UADDR32 && (out_off & 3) == 0)) | |
14413 | r_type ^= R_PPC64_ADDR32 ^ R_PPC64_UADDR32; | |
14414 | else if ((r_type == R_PPC64_ADDR16 && (out_off & 1) != 0) | |
14415 | || (r_type == R_PPC64_UADDR16 && (out_off & 1) == 0)) | |
14416 | r_type ^= R_PPC64_ADDR16 ^ R_PPC64_UADDR16; | |
14417 | ||
65f38f15 | 14418 | if (skip) |
0bb2d96a | 14419 | memset (&outrel, 0, sizeof outrel); |
afe397ea | 14420 | else if (!SYMBOL_REFERENCES_LOCAL (info, &h->elf) |
0b13192e AM |
14421 | && !is_opd |
14422 | && r_type != R_PPC64_TOC) | |
14acf4dc MR |
14423 | { |
14424 | BFD_ASSERT (h->elf.dynindx != -1); | |
14425 | outrel.r_info = ELF64_R_INFO (h->elf.dynindx, r_type); | |
14426 | } | |
65f38f15 AM |
14427 | else |
14428 | { | |
41bd81ab AM |
14429 | /* This symbol is local, or marked to become local, |
14430 | or this is an opd section reloc which must point | |
14431 | at a local function. */ | |
65f38f15 | 14432 | outrel.r_addend += relocation; |
e86ce104 | 14433 | if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC) |
65f38f15 | 14434 | { |
3fad3c7c | 14435 | if (is_opd && h != NULL) |
afbe61cf AM |
14436 | { |
14437 | /* Lie about opd entries. This case occurs | |
14438 | when building shared libraries and we | |
14439 | reference a function in another shared | |
3fad3c7c AM |
14440 | lib. The same thing happens for a weak |
14441 | definition in an application that's | |
14442 | overridden by a strong definition in a | |
14443 | shared lib. (I believe this is a generic | |
14444 | bug in binutils handling of weak syms.) | |
14445 | In these cases we won't use the opd | |
1e2f5b6e | 14446 | entry in this lib. */ |
b34976b6 | 14447 | unresolved_reloc = FALSE; |
afbe61cf | 14448 | } |
25f23106 AM |
14449 | if (!is_opd |
14450 | && r_type == R_PPC64_ADDR64 | |
14451 | && (h != NULL | |
14452 | ? h->elf.type == STT_GNU_IFUNC | |
14453 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)) | |
14454 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE); | |
14455 | else | |
14456 | { | |
14457 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
81407a69 | 14458 | |
25f23106 AM |
14459 | /* We need to relocate .opd contents for ld.so. |
14460 | Prelink also wants simple and consistent rules | |
14461 | for relocs. This make all RELATIVE relocs have | |
14462 | *r_offset equal to r_addend. */ | |
14463 | relocate = TRUE; | |
14464 | } | |
65f38f15 AM |
14465 | } |
14466 | else | |
14467 | { | |
14468 | long indx = 0; | |
14469 | ||
25f23106 AM |
14470 | if (h != NULL |
14471 | ? h->elf.type == STT_GNU_IFUNC | |
14472 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
14473 | { | |
25f53a85 | 14474 | info->callbacks->einfo |
bc30df16 AM |
14475 | (_("%P: %H: %s for indirect " |
14476 | "function `%T' unsupported\n"), | |
25f53a85 | 14477 | input_bfd, input_section, rel->r_offset, |
25f23106 AM |
14478 | ppc64_elf_howto_table[r_type]->name, |
14479 | sym_name); | |
14480 | ret = FALSE; | |
14481 | } | |
cf35638d | 14482 | else if (r_symndx == STN_UNDEF || bfd_is_abs_section (sec)) |
65f38f15 AM |
14483 | ; |
14484 | else if (sec == NULL || sec->owner == NULL) | |
14485 | { | |
14486 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 14487 | return FALSE; |
65f38f15 AM |
14488 | } |
14489 | else | |
14490 | { | |
14491 | asection *osec; | |
14492 | ||
14493 | osec = sec->output_section; | |
14494 | indx = elf_section_data (osec)->dynindx; | |
14495 | ||
74541ad4 AM |
14496 | if (indx == 0) |
14497 | { | |
14498 | if ((osec->flags & SEC_READONLY) == 0 | |
14499 | && htab->elf.data_index_section != NULL) | |
14500 | osec = htab->elf.data_index_section; | |
14501 | else | |
14502 | osec = htab->elf.text_index_section; | |
14503 | indx = elf_section_data (osec)->dynindx; | |
14504 | } | |
14505 | BFD_ASSERT (indx != 0); | |
14506 | ||
65f38f15 AM |
14507 | /* We are turning this relocation into one |
14508 | against a section symbol, so subtract out | |
14509 | the output section's address but not the | |
14510 | offset of the input section in the output | |
14511 | section. */ | |
14512 | outrel.r_addend -= osec->vma; | |
14513 | } | |
14514 | ||
14515 | outrel.r_info = ELF64_R_INFO (indx, r_type); | |
14516 | } | |
14517 | } | |
14518 | ||
14519 | sreloc = elf_section_data (input_section)->sreloc; | |
19e08130 AM |
14520 | if (h != NULL |
14521 | ? h->elf.type == STT_GNU_IFUNC | |
14522 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
33e44f2e | 14523 | sreloc = htab->elf.irelplt; |
65f38f15 AM |
14524 | if (sreloc == NULL) |
14525 | abort (); | |
14526 | ||
dfbb6ac9 AM |
14527 | if (sreloc->reloc_count * sizeof (Elf64_External_Rela) |
14528 | >= sreloc->size) | |
14529 | abort (); | |
947216bf AM |
14530 | loc = sreloc->contents; |
14531 | loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela); | |
65f38f15 AM |
14532 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); |
14533 | ||
14534 | /* If this reloc is against an external symbol, it will | |
14535 | be computed at runtime, so there's no need to do | |
81407a69 AM |
14536 | anything now. However, for the sake of prelink ensure |
14537 | that the section contents are a known value. */ | |
65f38f15 | 14538 | if (! relocate) |
81407a69 AM |
14539 | { |
14540 | unresolved_reloc = FALSE; | |
14541 | /* The value chosen here is quite arbitrary as ld.so | |
14542 | ignores section contents except for the special | |
14543 | case of .opd where the contents might be accessed | |
14544 | before relocation. Choose zero, as that won't | |
14545 | cause reloc overflow. */ | |
14546 | relocation = 0; | |
14547 | addend = 0; | |
14548 | /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs | |
14549 | to improve backward compatibility with older | |
14550 | versions of ld. */ | |
14551 | if (r_type == R_PPC64_ADDR64) | |
14552 | addend = outrel.r_addend; | |
14553 | /* Adjust pc_relative relocs to have zero in *r_offset. */ | |
4ce794b7 | 14554 | else if (ppc64_elf_howto_table[r_type]->pc_relative) |
000732f7 AM |
14555 | addend = (input_section->output_section->vma |
14556 | + input_section->output_offset | |
14557 | + rel->r_offset); | |
81407a69 | 14558 | } |
65f38f15 | 14559 | } |
5bd4f169 AM |
14560 | break; |
14561 | ||
65f38f15 AM |
14562 | case R_PPC64_COPY: |
14563 | case R_PPC64_GLOB_DAT: | |
14564 | case R_PPC64_JMP_SLOT: | |
25f23106 | 14565 | case R_PPC64_JMP_IREL: |
65f38f15 AM |
14566 | case R_PPC64_RELATIVE: |
14567 | /* We shouldn't ever see these dynamic relocs in relocatable | |
14568 | files. */ | |
ae9a127f | 14569 | /* Fall through. */ |
65f38f15 AM |
14570 | |
14571 | case R_PPC64_PLTGOT16: | |
14572 | case R_PPC64_PLTGOT16_DS: | |
14573 | case R_PPC64_PLTGOT16_HA: | |
14574 | case R_PPC64_PLTGOT16_HI: | |
14575 | case R_PPC64_PLTGOT16_LO: | |
14576 | case R_PPC64_PLTGOT16_LO_DS: | |
14577 | case R_PPC64_PLTREL32: | |
14578 | case R_PPC64_PLTREL64: | |
14579 | /* These ones haven't been implemented yet. */ | |
14580 | ||
25f53a85 | 14581 | info->callbacks->einfo |
bc30df16 | 14582 | (_("%P: %B: %s is not supported for `%T'\n"), |
d003868e | 14583 | input_bfd, |
4ce794b7 | 14584 | ppc64_elf_howto_table[r_type]->name, sym_name); |
5bd4f169 AM |
14585 | |
14586 | bfd_set_error (bfd_error_invalid_operation); | |
b34976b6 | 14587 | ret = FALSE; |
5bd4f169 | 14588 | continue; |
65f38f15 | 14589 | } |
5bd4f169 | 14590 | |
67f0cbdb AM |
14591 | /* Multi-instruction sequences that access the TOC can be |
14592 | optimized, eg. addis ra,r2,0; addi rb,ra,x; | |
14593 | to nop; addi rb,r2,x; */ | |
14594 | switch (r_type) | |
14595 | { | |
14596 | default: | |
14597 | break; | |
14598 | ||
14599 | case R_PPC64_GOT_TLSLD16_HI: | |
14600 | case R_PPC64_GOT_TLSGD16_HI: | |
14601 | case R_PPC64_GOT_TPREL16_HI: | |
14602 | case R_PPC64_GOT_DTPREL16_HI: | |
14603 | case R_PPC64_GOT16_HI: | |
14604 | case R_PPC64_TOC16_HI: | |
14605 | /* These relocs would only be useful if building up an | |
14606 | offset to later add to r2, perhaps in an indexed | |
14607 | addressing mode instruction. Don't try to optimize. | |
14608 | Unfortunately, the possibility of someone building up an | |
14609 | offset like this or even with the HA relocs, means that | |
14610 | we need to check the high insn when optimizing the low | |
14611 | insn. */ | |
14612 | break; | |
14613 | ||
14614 | case R_PPC64_GOT_TLSLD16_HA: | |
14615 | case R_PPC64_GOT_TLSGD16_HA: | |
14616 | case R_PPC64_GOT_TPREL16_HA: | |
14617 | case R_PPC64_GOT_DTPREL16_HA: | |
14618 | case R_PPC64_GOT16_HA: | |
14619 | case R_PPC64_TOC16_HA: | |
98528052 | 14620 | if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000 |
560c8763 | 14621 | && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn) |
98528052 AM |
14622 | { |
14623 | bfd_byte *p = contents + (rel->r_offset & ~3); | |
14624 | bfd_put_32 (input_bfd, NOP, p); | |
14625 | } | |
67f0cbdb AM |
14626 | break; |
14627 | ||
14628 | case R_PPC64_GOT_TLSLD16_LO: | |
14629 | case R_PPC64_GOT_TLSGD16_LO: | |
14630 | case R_PPC64_GOT_TPREL16_LO_DS: | |
14631 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
14632 | case R_PPC64_GOT16_LO: | |
14633 | case R_PPC64_GOT16_LO_DS: | |
14634 | case R_PPC64_TOC16_LO: | |
14635 | case R_PPC64_TOC16_LO_DS: | |
98528052 | 14636 | if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000 |
560c8763 | 14637 | && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn) |
67f0cbdb AM |
14638 | { |
14639 | bfd_byte *p = contents + (rel->r_offset & ~3); | |
14640 | insn = bfd_get_32 (input_bfd, p); | |
560c8763 AM |
14641 | if ((insn & (0x3f << 26)) == 12u << 26 /* addic */) |
14642 | { | |
14643 | /* Transform addic to addi when we change reg. */ | |
14644 | insn &= ~((0x3f << 26) | (0x1f << 16)); | |
14645 | insn |= (14u << 26) | (2 << 16); | |
14646 | } | |
14647 | else | |
67f0cbdb | 14648 | { |
98528052 AM |
14649 | insn &= ~(0x1f << 16); |
14650 | insn |= 2 << 16; | |
67f0cbdb | 14651 | } |
560c8763 | 14652 | bfd_put_32 (input_bfd, insn, p); |
67f0cbdb AM |
14653 | } |
14654 | break; | |
14655 | } | |
14656 | ||
65f38f15 | 14657 | /* Do any further special processing. */ |
b80eed39 | 14658 | howto = ppc64_elf_howto_table[(int) r_type]; |
65f38f15 AM |
14659 | switch (r_type) |
14660 | { | |
14661 | default: | |
14662 | break; | |
14663 | ||
25f23106 | 14664 | case R_PPC64_REL16_HA: |
f9c6b907 AM |
14665 | case R_PPC64_ADDR16_HA: |
14666 | case R_PPC64_ADDR16_HIGHA: | |
65f38f15 AM |
14667 | case R_PPC64_ADDR16_HIGHERA: |
14668 | case R_PPC64_ADDR16_HIGHESTA: | |
65f38f15 AM |
14669 | case R_PPC64_TOC16_HA: |
14670 | case R_PPC64_SECTOFF_HA: | |
411e1bfb | 14671 | case R_PPC64_TPREL16_HA: |
f9c6b907 | 14672 | case R_PPC64_TPREL16_HIGHA: |
411e1bfb | 14673 | case R_PPC64_TPREL16_HIGHERA: |
411e1bfb | 14674 | case R_PPC64_TPREL16_HIGHESTA: |
f9c6b907 AM |
14675 | case R_PPC64_DTPREL16_HA: |
14676 | case R_PPC64_DTPREL16_HIGHA: | |
411e1bfb | 14677 | case R_PPC64_DTPREL16_HIGHERA: |
411e1bfb | 14678 | case R_PPC64_DTPREL16_HIGHESTA: |
65f38f15 AM |
14679 | /* It's just possible that this symbol is a weak symbol |
14680 | that's not actually defined anywhere. In that case, | |
14681 | 'sec' would be NULL, and we should leave the symbol | |
14682 | alone (it will be set to zero elsewhere in the link). */ | |
5c5f6e17 AM |
14683 | if (sec == NULL) |
14684 | break; | |
14685 | /* Fall thru */ | |
14686 | ||
14687 | case R_PPC64_GOT16_HA: | |
14688 | case R_PPC64_PLTGOT16_HA: | |
14689 | case R_PPC64_PLT16_HA: | |
14690 | case R_PPC64_GOT_TLSGD16_HA: | |
14691 | case R_PPC64_GOT_TLSLD16_HA: | |
14692 | case R_PPC64_GOT_TPREL16_HA: | |
14693 | case R_PPC64_GOT_DTPREL16_HA: | |
14694 | /* Add 0x10000 if sign bit in 0:15 is set. | |
14695 | Bits 0:15 are not used. */ | |
14696 | addend += 0x8000; | |
65f38f15 AM |
14697 | break; |
14698 | ||
14699 | case R_PPC64_ADDR16_DS: | |
14700 | case R_PPC64_ADDR16_LO_DS: | |
14701 | case R_PPC64_GOT16_DS: | |
14702 | case R_PPC64_GOT16_LO_DS: | |
14703 | case R_PPC64_PLT16_LO_DS: | |
14704 | case R_PPC64_SECTOFF_DS: | |
14705 | case R_PPC64_SECTOFF_LO_DS: | |
14706 | case R_PPC64_TOC16_DS: | |
14707 | case R_PPC64_TOC16_LO_DS: | |
14708 | case R_PPC64_PLTGOT16_DS: | |
14709 | case R_PPC64_PLTGOT16_LO_DS: | |
411e1bfb AM |
14710 | case R_PPC64_GOT_TPREL16_DS: |
14711 | case R_PPC64_GOT_TPREL16_LO_DS: | |
14712 | case R_PPC64_GOT_DTPREL16_DS: | |
14713 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
14714 | case R_PPC64_TPREL16_DS: | |
14715 | case R_PPC64_TPREL16_LO_DS: | |
14716 | case R_PPC64_DTPREL16_DS: | |
14717 | case R_PPC64_DTPREL16_LO_DS: | |
adadcc0c AM |
14718 | insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3)); |
14719 | mask = 3; | |
14720 | /* If this reloc is against an lq insn, then the value must be | |
14721 | a multiple of 16. This is somewhat of a hack, but the | |
14722 | "correct" way to do this by defining _DQ forms of all the | |
14723 | _DS relocs bloats all reloc switches in this file. It | |
14724 | doesn't seem to make much sense to use any of these relocs | |
14725 | in data, so testing the insn should be safe. */ | |
494dac0c | 14726 | if ((insn & (0x3f << 26)) == (56u << 26)) |
adadcc0c AM |
14727 | mask = 15; |
14728 | if (((relocation + addend) & mask) != 0) | |
65f38f15 | 14729 | { |
25f53a85 | 14730 | info->callbacks->einfo |
8de848d8 | 14731 | (_("%P: %H: error: %s not a multiple of %u\n"), |
25f53a85 | 14732 | input_bfd, input_section, rel->r_offset, |
b80eed39 | 14733 | howto->name, |
adadcc0c | 14734 | mask + 1); |
65f38f15 | 14735 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 14736 | ret = FALSE; |
65f38f15 AM |
14737 | continue; |
14738 | } | |
14739 | break; | |
5bd4f169 AM |
14740 | } |
14741 | ||
239e1f3a AM |
14742 | /* Dynamic relocs are not propagated for SEC_DEBUGGING sections |
14743 | because such sections are not SEC_ALLOC and thus ld.so will | |
14744 | not process them. */ | |
65f38f15 | 14745 | if (unresolved_reloc |
239e1f3a | 14746 | && !((input_section->flags & SEC_DEBUGGING) != 0 |
1d5316ab AM |
14747 | && h->elf.def_dynamic) |
14748 | && _bfd_elf_section_offset (output_bfd, info, input_section, | |
14749 | rel->r_offset) != (bfd_vma) -1) | |
9c07fe7c | 14750 | { |
25f53a85 | 14751 | info->callbacks->einfo |
bc30df16 | 14752 | (_("%P: %H: unresolvable %s against `%T'\n"), |
25f53a85 | 14753 | input_bfd, input_section, rel->r_offset, |
b80eed39 | 14754 | howto->name, |
039b3fef | 14755 | h->elf.root.root.string); |
b34976b6 | 14756 | ret = FALSE; |
9c07fe7c | 14757 | } |
5bd4f169 | 14758 | |
b80eed39 AM |
14759 | /* 16-bit fields in insns mostly have signed values, but a |
14760 | few insns have 16-bit unsigned values. Really, we should | |
14761 | have different reloc types. */ | |
14762 | if (howto->complain_on_overflow != complain_overflow_dont | |
14763 | && howto->dst_mask == 0xffff | |
14764 | && (input_section->flags & SEC_CODE) != 0) | |
14765 | { | |
14766 | enum complain_overflow complain = complain_overflow_signed; | |
14767 | ||
14768 | insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3)); | |
a47622ac AM |
14769 | if ((insn & (0x3f << 26)) == 10u << 26 /* cmpli */) |
14770 | complain = complain_overflow_bitfield; | |
14771 | else if (howto->rightshift == 0 | |
14772 | ? ((insn & (0x3f << 26)) == 28u << 26 /* andi */ | |
14773 | || (insn & (0x3f << 26)) == 24u << 26 /* ori */ | |
14774 | || (insn & (0x3f << 26)) == 26u << 26 /* xori */) | |
14775 | : ((insn & (0x3f << 26)) == 29u << 26 /* andis */ | |
14776 | || (insn & (0x3f << 26)) == 25u << 26 /* oris */ | |
14777 | || (insn & (0x3f << 26)) == 27u << 26 /* xoris */)) | |
b80eed39 AM |
14778 | complain = complain_overflow_unsigned; |
14779 | if (howto->complain_on_overflow != complain) | |
14780 | { | |
14781 | alt_howto = *howto; | |
14782 | alt_howto.complain_on_overflow = complain; | |
14783 | howto = &alt_howto; | |
14784 | } | |
14785 | } | |
14786 | ||
14787 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, contents, | |
14788 | rel->r_offset, relocation, addend); | |
5bd4f169 | 14789 | |
ef60b7ff | 14790 | if (r != bfd_reloc_ok) |
5bd4f169 | 14791 | { |
bc30df16 | 14792 | char *more_info = NULL; |
b80eed39 | 14793 | const char *reloc_name = howto->name; |
bc30df16 AM |
14794 | |
14795 | if (reloc_dest != DEST_NORMAL) | |
14796 | { | |
14797 | more_info = bfd_malloc (strlen (reloc_name) + 8); | |
14798 | if (more_info != NULL) | |
14799 | { | |
14800 | strcpy (more_info, reloc_name); | |
14801 | strcat (more_info, (reloc_dest == DEST_OPD | |
14802 | ? " (OPD)" : " (stub)")); | |
14803 | reloc_name = more_info; | |
14804 | } | |
14805 | } | |
14806 | ||
cd27b276 | 14807 | if (r == bfd_reloc_overflow) |
5bd4f169 | 14808 | { |
cd27b276 AM |
14809 | if (warned) |
14810 | continue; | |
14811 | if (h != NULL | |
039b3fef | 14812 | && h->elf.root.type == bfd_link_hash_undefweak |
b80eed39 | 14813 | && howto->pc_relative) |
5bd4f169 AM |
14814 | { |
14815 | /* Assume this is a call protected by other code that | |
14816 | detects the symbol is undefined. If this is the case, | |
14817 | we can safely ignore the overflow. If not, the | |
14818 | program is hosed anyway, and a little warning isn't | |
14819 | going to help. */ | |
14820 | ||
14821 | continue; | |
14822 | } | |
14823 | ||
ef60b7ff | 14824 | if (!((*info->callbacks->reloc_overflow) |
bc30df16 AM |
14825 | (info, &h->elf.root, sym_name, |
14826 | reloc_name, orig_rel.r_addend, | |
14827 | input_bfd, input_section, rel->r_offset))) | |
b34976b6 | 14828 | return FALSE; |
ef60b7ff AM |
14829 | } |
14830 | else | |
14831 | { | |
25f53a85 | 14832 | info->callbacks->einfo |
bc30df16 | 14833 | (_("%P: %H: %s against `%T': error %d\n"), |
25f53a85 | 14834 | input_bfd, input_section, rel->r_offset, |
bc30df16 | 14835 | reloc_name, sym_name, (int) r); |
b34976b6 | 14836 | ret = FALSE; |
ef60b7ff | 14837 | } |
bc30df16 AM |
14838 | if (more_info != NULL) |
14839 | free (more_info); | |
5bd4f169 | 14840 | } |
5bd4f169 AM |
14841 | } |
14842 | ||
645ea6a9 AM |
14843 | /* If we're emitting relocations, then shortly after this function |
14844 | returns, reloc offsets and addends for this section will be | |
14845 | adjusted. Worse, reloc symbol indices will be for the output | |
8860955f AM |
14846 | file rather than the input. Save a copy of the relocs for |
14847 | opd_entry_value. */ | |
4cc603a5 | 14848 | if (is_opd && (info->emitrelocations || info->relocatable)) |
8860955f AM |
14849 | { |
14850 | bfd_size_type amt; | |
14851 | amt = input_section->reloc_count * sizeof (Elf_Internal_Rela); | |
14852 | rel = bfd_alloc (input_bfd, amt); | |
729eabd5 AM |
14853 | BFD_ASSERT (ppc64_elf_tdata (input_bfd)->opd.relocs == NULL); |
14854 | ppc64_elf_tdata (input_bfd)->opd.relocs = rel; | |
8860955f AM |
14855 | if (rel == NULL) |
14856 | return FALSE; | |
14857 | memcpy (rel, relocs, amt); | |
14858 | } | |
5bd4f169 AM |
14859 | return ret; |
14860 | } | |
14861 | ||
754021d0 AM |
14862 | /* Adjust the value of any local symbols in opd sections. */ |
14863 | ||
6e0b88f1 | 14864 | static int |
754021d0 AM |
14865 | ppc64_elf_output_symbol_hook (struct bfd_link_info *info, |
14866 | const char *name ATTRIBUTE_UNUSED, | |
14867 | Elf_Internal_Sym *elfsym, | |
14868 | asection *input_sec, | |
14869 | struct elf_link_hash_entry *h) | |
14870 | { | |
74f0fb50 AM |
14871 | struct _opd_sec_data *opd; |
14872 | long adjust; | |
754021d0 AM |
14873 | bfd_vma value; |
14874 | ||
4025353c | 14875 | if (h != NULL) |
6e0b88f1 | 14876 | return 1; |
4025353c | 14877 | |
74f0fb50 AM |
14878 | opd = get_opd_info (input_sec); |
14879 | if (opd == NULL || opd->adjust == NULL) | |
6e0b88f1 | 14880 | return 1; |
754021d0 AM |
14881 | |
14882 | value = elfsym->st_value - input_sec->output_offset; | |
14883 | if (!info->relocatable) | |
14884 | value -= input_sec->output_section->vma; | |
14885 | ||
51aecdc5 | 14886 | adjust = opd->adjust[OPD_NDX (value)]; |
4025353c | 14887 | if (adjust == -1) |
6e0b88f1 AM |
14888 | return 2; |
14889 | ||
14890 | elfsym->st_value += adjust; | |
14891 | return 1; | |
754021d0 AM |
14892 | } |
14893 | ||
5bd4f169 AM |
14894 | /* Finish up dynamic symbol handling. We set the contents of various |
14895 | dynamic sections here. */ | |
14896 | ||
b34976b6 | 14897 | static bfd_boolean |
4ce794b7 AM |
14898 | ppc64_elf_finish_dynamic_symbol (bfd *output_bfd, |
14899 | struct bfd_link_info *info, | |
14900 | struct elf_link_hash_entry *h, | |
ab6dce23 | 14901 | Elf_Internal_Sym *sym ATTRIBUTE_UNUSED) |
5bd4f169 | 14902 | { |
65f38f15 | 14903 | struct ppc_link_hash_table *htab; |
8387904d AM |
14904 | struct plt_entry *ent; |
14905 | Elf_Internal_Rela rela; | |
14906 | bfd_byte *loc; | |
5bd4f169 | 14907 | |
65f38f15 | 14908 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
14909 | if (htab == NULL) |
14910 | return FALSE; | |
5bd4f169 | 14911 | |
8387904d AM |
14912 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) |
14913 | if (ent->plt.offset != (bfd_vma) -1) | |
14914 | { | |
14915 | /* This symbol has an entry in the procedure linkage | |
14916 | table. Set it up. */ | |
e054468f AM |
14917 | if (!htab->elf.dynamic_sections_created |
14918 | || h->dynindx == -1) | |
14919 | { | |
14920 | BFD_ASSERT (h->type == STT_GNU_IFUNC | |
14921 | && h->def_regular | |
14922 | && (h->root.type == bfd_link_hash_defined | |
14923 | || h->root.type == bfd_link_hash_defweak)); | |
33e44f2e AM |
14924 | rela.r_offset = (htab->elf.iplt->output_section->vma |
14925 | + htab->elf.iplt->output_offset | |
25f23106 | 14926 | + ent->plt.offset); |
ee67d69a AM |
14927 | if (htab->opd_abi) |
14928 | rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL); | |
14929 | else | |
14930 | rela.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE); | |
e054468f AM |
14931 | rela.r_addend = (h->root.u.def.value |
14932 | + h->root.u.def.section->output_offset | |
14933 | + h->root.u.def.section->output_section->vma | |
14934 | + ent->addend); | |
33e44f2e AM |
14935 | loc = (htab->elf.irelplt->contents |
14936 | + (htab->elf.irelplt->reloc_count++ | |
25f23106 | 14937 | * sizeof (Elf64_External_Rela))); |
e054468f AM |
14938 | } |
14939 | else | |
14940 | { | |
33e44f2e AM |
14941 | rela.r_offset = (htab->elf.splt->output_section->vma |
14942 | + htab->elf.splt->output_offset | |
25f23106 | 14943 | + ent->plt.offset); |
e054468f AM |
14944 | rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT); |
14945 | rela.r_addend = ent->addend; | |
33e44f2e | 14946 | loc = (htab->elf.srelplt->contents |
b9e5796b AM |
14947 | + ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE (htab)) |
14948 | / PLT_ENTRY_SIZE (htab) * sizeof (Elf64_External_Rela))); | |
e054468f | 14949 | } |
8387904d | 14950 | bfd_elf64_swap_reloca_out (output_bfd, &rela, loc); |
a345bc8d AM |
14951 | |
14952 | if (!htab->opd_abi) | |
14953 | { | |
14954 | if (!h->def_regular) | |
14955 | { | |
14956 | /* Mark the symbol as undefined, rather than as | |
14957 | defined in glink. Leave the value if there were | |
14958 | any relocations where pointer equality matters | |
14959 | (this is a clue for the dynamic linker, to make | |
14960 | function pointer comparisons work between an | |
14961 | application and shared library), otherwise set it | |
14962 | to zero. */ | |
14963 | sym->st_shndx = SHN_UNDEF; | |
14964 | if (!h->pointer_equality_needed) | |
14965 | sym->st_value = 0; | |
14966 | else if (!h->ref_regular_nonweak) | |
14967 | { | |
14968 | /* This breaks function pointer comparisons, but | |
14969 | that is better than breaking tests for a NULL | |
14970 | function pointer. */ | |
14971 | sym->st_value = 0; | |
14972 | } | |
14973 | } | |
14974 | } | |
8387904d | 14975 | } |
5bd4f169 | 14976 | |
f5385ebf | 14977 | if (h->needs_copy) |
5bd4f169 | 14978 | { |
65f38f15 | 14979 | /* This symbol needs a copy reloc. Set it up. */ |
5bd4f169 | 14980 | |
65f38f15 AM |
14981 | if (h->dynindx == -1 |
14982 | || (h->root.type != bfd_link_hash_defined | |
14983 | && h->root.type != bfd_link_hash_defweak) | |
4ce794b7 | 14984 | || htab->relbss == NULL) |
65f38f15 | 14985 | abort (); |
5bd4f169 AM |
14986 | |
14987 | rela.r_offset = (h->root.u.def.value | |
14988 | + h->root.u.def.section->output_section->vma | |
14989 | + h->root.u.def.section->output_offset); | |
14990 | rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY); | |
14991 | rela.r_addend = 0; | |
4ce794b7 AM |
14992 | loc = htab->relbss->contents; |
14993 | loc += htab->relbss->reloc_count++ * sizeof (Elf64_External_Rela); | |
65f38f15 | 14994 | bfd_elf64_swap_reloca_out (output_bfd, &rela, loc); |
5bd4f169 AM |
14995 | } |
14996 | ||
b34976b6 | 14997 | return TRUE; |
5bd4f169 AM |
14998 | } |
14999 | ||
65f38f15 AM |
15000 | /* Used to decide how to sort relocs in an optimal manner for the |
15001 | dynamic linker, before writing them out. */ | |
15002 | ||
15003 | static enum elf_reloc_type_class | |
7e612e98 AM |
15004 | ppc64_elf_reloc_type_class (const struct bfd_link_info *info, |
15005 | const asection *rel_sec, | |
15006 | const Elf_Internal_Rela *rela) | |
65f38f15 | 15007 | { |
04c9666a | 15008 | enum elf_ppc64_reloc_type r_type; |
7e612e98 AM |
15009 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
15010 | ||
33e44f2e | 15011 | if (rel_sec == htab->elf.irelplt) |
7e612e98 | 15012 | return reloc_class_ifunc; |
a33d1f77 | 15013 | |
4ce794b7 | 15014 | r_type = ELF64_R_TYPE (rela->r_info); |
a33d1f77 | 15015 | switch (r_type) |
65f38f15 AM |
15016 | { |
15017 | case R_PPC64_RELATIVE: | |
15018 | return reloc_class_relative; | |
15019 | case R_PPC64_JMP_SLOT: | |
15020 | return reloc_class_plt; | |
15021 | case R_PPC64_COPY: | |
15022 | return reloc_class_copy; | |
15023 | default: | |
15024 | return reloc_class_normal; | |
15025 | } | |
15026 | } | |
15027 | ||
5bd4f169 AM |
15028 | /* Finish up the dynamic sections. */ |
15029 | ||
b34976b6 | 15030 | static bfd_boolean |
4ce794b7 AM |
15031 | ppc64_elf_finish_dynamic_sections (bfd *output_bfd, |
15032 | struct bfd_link_info *info) | |
5bd4f169 | 15033 | { |
65f38f15 AM |
15034 | struct ppc_link_hash_table *htab; |
15035 | bfd *dynobj; | |
5bd4f169 | 15036 | asection *sdyn; |
5bd4f169 | 15037 | |
65f38f15 | 15038 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
15039 | if (htab == NULL) |
15040 | return FALSE; | |
15041 | ||
65f38f15 | 15042 | dynobj = htab->elf.dynobj; |
3d4d4302 | 15043 | sdyn = bfd_get_linker_section (dynobj, ".dynamic"); |
5bd4f169 | 15044 | |
65f38f15 | 15045 | if (htab->elf.dynamic_sections_created) |
5bd4f169 | 15046 | { |
5bd4f169 AM |
15047 | Elf64_External_Dyn *dyncon, *dynconend; |
15048 | ||
33e44f2e | 15049 | if (sdyn == NULL || htab->elf.sgot == NULL) |
65f38f15 | 15050 | abort (); |
5bd4f169 AM |
15051 | |
15052 | dyncon = (Elf64_External_Dyn *) sdyn->contents; | |
eea6121a | 15053 | dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size); |
5bd4f169 AM |
15054 | for (; dyncon < dynconend; dyncon++) |
15055 | { | |
15056 | Elf_Internal_Dyn dyn; | |
19397422 | 15057 | asection *s; |
5bd4f169 AM |
15058 | |
15059 | bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn); | |
15060 | ||
15061 | switch (dyn.d_tag) | |
15062 | { | |
65f38f15 AM |
15063 | default: |
15064 | continue; | |
5bd4f169 | 15065 | |
5d1634d7 | 15066 | case DT_PPC64_GLINK: |
4ce794b7 | 15067 | s = htab->glink; |
6348e046 | 15068 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
ad8e1ba5 AM |
15069 | /* We stupidly defined DT_PPC64_GLINK to be the start |
15070 | of glink rather than the first entry point, which is | |
15071 | what ld.so needs, and now have a bigger stub to | |
15072 | support automatic multiple TOCs. */ | |
b9e5796b | 15073 | dyn.d_un.d_ptr += GLINK_CALL_STUB_SIZE - 8 * 4; |
5d1634d7 AM |
15074 | break; |
15075 | ||
19397422 AM |
15076 | case DT_PPC64_OPD: |
15077 | s = bfd_get_section_by_name (output_bfd, ".opd"); | |
6348e046 AM |
15078 | if (s == NULL) |
15079 | continue; | |
15080 | dyn.d_un.d_ptr = s->vma; | |
19397422 AM |
15081 | break; |
15082 | ||
e8910a83 AM |
15083 | case DT_PPC64_OPT: |
15084 | if (htab->do_multi_toc && htab->multi_toc_needed) | |
15085 | dyn.d_un.d_val |= PPC64_OPT_MULTI_TOC; | |
15086 | break; | |
15087 | ||
19397422 AM |
15088 | case DT_PPC64_OPDSZ: |
15089 | s = bfd_get_section_by_name (output_bfd, ".opd"); | |
6348e046 AM |
15090 | if (s == NULL) |
15091 | continue; | |
eea6121a | 15092 | dyn.d_un.d_val = s->size; |
19397422 AM |
15093 | break; |
15094 | ||
65f38f15 | 15095 | case DT_PLTGOT: |
33e44f2e | 15096 | s = htab->elf.splt; |
6348e046 | 15097 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
65f38f15 AM |
15098 | break; |
15099 | ||
15100 | case DT_JMPREL: | |
33e44f2e | 15101 | s = htab->elf.srelplt; |
6348e046 | 15102 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
65f38f15 | 15103 | break; |
5bd4f169 | 15104 | |
65f38f15 | 15105 | case DT_PLTRELSZ: |
33e44f2e | 15106 | dyn.d_un.d_val = htab->elf.srelplt->size; |
5d1634d7 AM |
15107 | break; |
15108 | ||
15109 | case DT_RELASZ: | |
15110 | /* Don't count procedure linkage table relocs in the | |
15111 | overall reloc count. */ | |
33e44f2e | 15112 | s = htab->elf.srelplt; |
6348e046 AM |
15113 | if (s == NULL) |
15114 | continue; | |
eea6121a | 15115 | dyn.d_un.d_val -= s->size; |
6348e046 AM |
15116 | break; |
15117 | ||
15118 | case DT_RELA: | |
15119 | /* We may not be using the standard ELF linker script. | |
15120 | If .rela.plt is the first .rela section, we adjust | |
15121 | DT_RELA to not include it. */ | |
33e44f2e | 15122 | s = htab->elf.srelplt; |
6348e046 AM |
15123 | if (s == NULL) |
15124 | continue; | |
15125 | if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset) | |
15126 | continue; | |
eea6121a | 15127 | dyn.d_un.d_ptr += s->size; |
65f38f15 | 15128 | break; |
5bd4f169 | 15129 | } |
5bd4f169 | 15130 | |
65f38f15 | 15131 | bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); |
5bd4f169 | 15132 | } |
5bd4f169 AM |
15133 | } |
15134 | ||
33e44f2e | 15135 | if (htab->elf.sgot != NULL && htab->elf.sgot->size != 0) |
5d1634d7 AM |
15136 | { |
15137 | /* Fill in the first entry in the global offset table. | |
15138 | We use it to hold the link-time TOCbase. */ | |
15139 | bfd_put_64 (output_bfd, | |
60ee0d4a | 15140 | elf_gp (output_bfd) + TOC_BASE_OFF, |
33e44f2e | 15141 | htab->elf.sgot->contents); |
5d1634d7 AM |
15142 | |
15143 | /* Set .got entry size. */ | |
33e44f2e | 15144 | elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize = 8; |
5d1634d7 AM |
15145 | } |
15146 | ||
33e44f2e | 15147 | if (htab->elf.splt != NULL && htab->elf.splt->size != 0) |
5d1634d7 AM |
15148 | { |
15149 | /* Set .plt entry size. */ | |
33e44f2e | 15150 | elf_section_data (htab->elf.splt->output_section)->this_hdr.sh_entsize |
b9e5796b | 15151 | = PLT_ENTRY_SIZE (htab); |
5d1634d7 AM |
15152 | } |
15153 | ||
84f5d08e AM |
15154 | /* brlt is SEC_LINKER_CREATED, so we need to write out relocs for |
15155 | brlt ourselves if emitrelocations. */ | |
15156 | if (htab->brlt != NULL | |
15157 | && htab->brlt->reloc_count != 0 | |
15158 | && !_bfd_elf_link_output_relocs (output_bfd, | |
15159 | htab->brlt, | |
d4730f92 | 15160 | elf_section_data (htab->brlt)->rela.hdr, |
84f5d08e AM |
15161 | elf_section_data (htab->brlt)->relocs, |
15162 | NULL)) | |
15163 | return FALSE; | |
15164 | ||
176a0d42 AM |
15165 | if (htab->glink != NULL |
15166 | && htab->glink->reloc_count != 0 | |
15167 | && !_bfd_elf_link_output_relocs (output_bfd, | |
15168 | htab->glink, | |
d4730f92 | 15169 | elf_section_data (htab->glink)->rela.hdr, |
176a0d42 AM |
15170 | elf_section_data (htab->glink)->relocs, |
15171 | NULL)) | |
15172 | return FALSE; | |
15173 | ||
58d180e8 | 15174 | if (htab->glink_eh_frame != NULL |
da44f4e5 AM |
15175 | && htab->glink_eh_frame->size != 0) |
15176 | { | |
15177 | bfd_vma val; | |
15178 | bfd_byte *p; | |
15179 | asection *stub_sec; | |
15180 | ||
15181 | p = htab->glink_eh_frame->contents + sizeof (glink_eh_frame_cie); | |
15182 | for (stub_sec = htab->params->stub_bfd->sections; | |
15183 | stub_sec != NULL; | |
15184 | stub_sec = stub_sec->next) | |
15185 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) | |
15186 | { | |
15187 | /* FDE length. */ | |
15188 | p += 4; | |
15189 | /* CIE pointer. */ | |
15190 | p += 4; | |
15191 | /* Offset to stub section. */ | |
15192 | val = (stub_sec->output_section->vma | |
15193 | + stub_sec->output_offset); | |
15194 | val -= (htab->glink_eh_frame->output_section->vma | |
15195 | + htab->glink_eh_frame->output_offset | |
15196 | + (p - htab->glink_eh_frame->contents)); | |
15197 | if (val + 0x80000000 > 0xffffffff) | |
15198 | { | |
15199 | info->callbacks->einfo | |
15200 | (_("%P: %s offset too large for .eh_frame sdata4 encoding"), | |
15201 | stub_sec->name); | |
15202 | return FALSE; | |
15203 | } | |
15204 | bfd_put_32 (dynobj, val, p); | |
15205 | p += 4; | |
15206 | /* stub section size. */ | |
15207 | p += 4; | |
15208 | /* Augmentation. */ | |
15209 | p += 1; | |
15210 | /* Pad. */ | |
15211 | p += 7; | |
15212 | } | |
15213 | if (htab->glink != NULL && htab->glink->size != 0) | |
15214 | { | |
15215 | /* FDE length. */ | |
15216 | p += 4; | |
15217 | /* CIE pointer. */ | |
15218 | p += 4; | |
15219 | /* Offset to .glink. */ | |
15220 | val = (htab->glink->output_section->vma | |
15221 | + htab->glink->output_offset | |
15222 | + 8); | |
15223 | val -= (htab->glink_eh_frame->output_section->vma | |
15224 | + htab->glink_eh_frame->output_offset | |
15225 | + (p - htab->glink_eh_frame->contents)); | |
15226 | if (val + 0x80000000 > 0xffffffff) | |
15227 | { | |
15228 | info->callbacks->einfo | |
15229 | (_("%P: %s offset too large for .eh_frame sdata4 encoding"), | |
15230 | htab->glink->name); | |
15231 | return FALSE; | |
15232 | } | |
15233 | bfd_put_32 (dynobj, val, p); | |
15234 | p += 4; | |
15235 | /* .glink size. */ | |
15236 | p += 4; | |
15237 | /* Augmentation. */ | |
15238 | p += 1; | |
15239 | /* Ops. */ | |
15240 | p += 7; | |
15241 | } | |
15242 | ||
15243 | if (htab->glink_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME | |
15244 | && !_bfd_elf_write_section_eh_frame (output_bfd, info, | |
15245 | htab->glink_eh_frame, | |
15246 | htab->glink_eh_frame->contents)) | |
15247 | return FALSE; | |
15248 | } | |
58d180e8 | 15249 | |
e717da7e | 15250 | /* We need to handle writing out multiple GOT sections ourselves, |
7b53ace3 AM |
15251 | since we didn't add them to DYNOBJ. We know dynobj is the first |
15252 | bfd. */ | |
c72f2fb2 | 15253 | while ((dynobj = dynobj->link.next) != NULL) |
e717da7e AM |
15254 | { |
15255 | asection *s; | |
7b53ace3 | 15256 | |
0c8d6e5c | 15257 | if (!is_ppc64_elf (dynobj)) |
7b53ace3 AM |
15258 | continue; |
15259 | ||
e717da7e AM |
15260 | s = ppc64_elf_tdata (dynobj)->got; |
15261 | if (s != NULL | |
eea6121a | 15262 | && s->size != 0 |
e717da7e AM |
15263 | && s->output_section != bfd_abs_section_ptr |
15264 | && !bfd_set_section_contents (output_bfd, s->output_section, | |
15265 | s->contents, s->output_offset, | |
eea6121a | 15266 | s->size)) |
e717da7e AM |
15267 | return FALSE; |
15268 | s = ppc64_elf_tdata (dynobj)->relgot; | |
15269 | if (s != NULL | |
eea6121a | 15270 | && s->size != 0 |
e717da7e AM |
15271 | && s->output_section != bfd_abs_section_ptr |
15272 | && !bfd_set_section_contents (output_bfd, s->output_section, | |
15273 | s->contents, s->output_offset, | |
eea6121a | 15274 | s->size)) |
e717da7e AM |
15275 | return FALSE; |
15276 | } | |
f6c52c13 | 15277 | |
b34976b6 | 15278 | return TRUE; |
5bd4f169 AM |
15279 | } |
15280 | ||
5bd4f169 | 15281 | #include "elf64-target.h" |
7b8e7dad AM |
15282 | |
15283 | /* FreeBSD support */ | |
15284 | ||
15285 | #undef TARGET_LITTLE_SYM | |
15286 | #undef TARGET_LITTLE_NAME | |
15287 | ||
15288 | #undef TARGET_BIG_SYM | |
6d00b590 | 15289 | #define TARGET_BIG_SYM powerpc_elf64_fbsd_vec |
7b8e7dad AM |
15290 | #undef TARGET_BIG_NAME |
15291 | #define TARGET_BIG_NAME "elf64-powerpc-freebsd" | |
15292 | ||
15293 | #undef ELF_OSABI | |
15294 | #define ELF_OSABI ELFOSABI_FREEBSD | |
15295 | ||
15296 | #undef elf64_bed | |
15297 | #define elf64_bed elf64_powerpc_fbsd_bed | |
15298 | ||
15299 | #include "elf64-target.h" | |
15300 |