Commit | Line | Data |
---|---|---|
5bd4f169 | 1 | /* PowerPC64-specific support for 64-bit ELF. |
4b95cf5c | 2 | Copyright (C) 1999-2014 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 | |
ad8e1ba5 AM |
59 | #define TARGET_LITTLE_SYM bfd_elf64_powerpcle_vec |
60 | #define TARGET_LITTLE_NAME "elf64-powerpcle" | |
61 | #define TARGET_BIG_SYM bfd_elf64_powerpc_vec | |
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 | |
24718e3b | 67 | #define ELF_COMMONPAGESIZE 0x1000 |
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 | |
87 | #define bfd_elf64_bfd_link_hash_table_free ppc64_elf_link_hash_table_free | |
90e3cdf2 | 88 | #define bfd_elf64_get_synthetic_symtab ppc64_elf_get_synthetic_symtab |
aa374f67 | 89 | #define bfd_elf64_bfd_link_just_syms ppc64_elf_link_just_syms |
ad8e1ba5 AM |
90 | |
91 | #define elf_backend_object_p ppc64_elf_object_p | |
d37c89e5 AM |
92 | #define elf_backend_grok_prstatus ppc64_elf_grok_prstatus |
93 | #define elf_backend_grok_psinfo ppc64_elf_grok_psinfo | |
183e98be | 94 | #define elf_backend_write_core_note ppc64_elf_write_core_note |
ad8e1ba5 AM |
95 | #define elf_backend_create_dynamic_sections ppc64_elf_create_dynamic_sections |
96 | #define elf_backend_copy_indirect_symbol ppc64_elf_copy_indirect_symbol | |
555cd476 | 97 | #define elf_backend_add_symbol_hook ppc64_elf_add_symbol_hook |
7d9616d7 | 98 | #define elf_backend_check_directives ppc64_elf_process_dot_syms |
e5034e59 | 99 | #define elf_backend_notice_as_needed ppc64_elf_notice_as_needed |
8387904d | 100 | #define elf_backend_archive_symbol_lookup ppc64_elf_archive_symbol_lookup |
ad8e1ba5 | 101 | #define elf_backend_check_relocs ppc64_elf_check_relocs |
74f0fb50 | 102 | #define elf_backend_gc_keep ppc64_elf_gc_keep |
64d03ab5 | 103 | #define elf_backend_gc_mark_dynamic_ref ppc64_elf_gc_mark_dynamic_ref |
ad8e1ba5 AM |
104 | #define elf_backend_gc_mark_hook ppc64_elf_gc_mark_hook |
105 | #define elf_backend_gc_sweep_hook ppc64_elf_gc_sweep_hook | |
106 | #define elf_backend_adjust_dynamic_symbol ppc64_elf_adjust_dynamic_symbol | |
107 | #define elf_backend_hide_symbol ppc64_elf_hide_symbol | |
9f296da3 | 108 | #define elf_backend_maybe_function_sym ppc64_elf_maybe_function_sym |
ad8e1ba5 AM |
109 | #define elf_backend_always_size_sections ppc64_elf_func_desc_adjust |
110 | #define elf_backend_size_dynamic_sections ppc64_elf_size_dynamic_sections | |
a345bc8d | 111 | #define elf_backend_hash_symbol ppc64_elf_hash_symbol |
74541ad4 | 112 | #define elf_backend_init_index_section _bfd_elf_init_2_index_sections |
60124e18 | 113 | #define elf_backend_action_discarded ppc64_elf_action_discarded |
ad8e1ba5 AM |
114 | #define elf_backend_relocate_section ppc64_elf_relocate_section |
115 | #define elf_backend_finish_dynamic_symbol ppc64_elf_finish_dynamic_symbol | |
116 | #define elf_backend_reloc_type_class ppc64_elf_reloc_type_class | |
117 | #define elf_backend_finish_dynamic_sections ppc64_elf_finish_dynamic_sections | |
754021d0 | 118 | #define elf_backend_link_output_symbol_hook ppc64_elf_output_symbol_hook |
29ef7005 | 119 | #define elf_backend_special_sections ppc64_elf_special_sections |
6911b7dc | 120 | #define elf_backend_merge_symbol_attribute ppc64_elf_merge_symbol_attribute |
ad8e1ba5 | 121 | |
5bd4f169 AM |
122 | /* The name of the dynamic interpreter. This is put in the .interp |
123 | section. */ | |
124 | #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1" | |
125 | ||
126 | /* The size in bytes of an entry in the procedure linkage table. */ | |
b9e5796b | 127 | #define PLT_ENTRY_SIZE(htab) (htab->opd_abi ? 24 : 8) |
5bd4f169 AM |
128 | |
129 | /* The initial size of the plt reserved for the dynamic linker. */ | |
b9e5796b | 130 | #define PLT_INITIAL_ENTRY_SIZE(htab) (htab->opd_abi ? 24 : 16) |
5bd4f169 | 131 | |
a078d95a AM |
132 | /* Offsets to some stack save slots. */ |
133 | #define STK_LR 16 | |
134 | #define STK_TOC(htab) (htab->opd_abi ? 40 : 24) | |
eb8d7fda | 135 | /* This one is dodgy. ELFv2 does not have a linker word, so use the |
a078d95a AM |
136 | CR save slot. Used only by optimised __tls_get_addr call stub, |
137 | relying on __tls_get_addr_opt not saving CR.. */ | |
138 | #define STK_LINKER(htab) (htab->opd_abi ? 32 : 8) | |
139 | ||
5bd4f169 | 140 | /* TOC base pointers offset from start of TOC. */ |
411e1bfb AM |
141 | #define TOC_BASE_OFF 0x8000 |
142 | ||
143 | /* Offset of tp and dtp pointers from start of TLS block. */ | |
144 | #define TP_OFFSET 0x7000 | |
145 | #define DTP_OFFSET 0x8000 | |
5bd4f169 | 146 | |
ad8e1ba5 AM |
147 | /* .plt call stub instructions. The normal stub is like this, but |
148 | sometimes the .plt entry crosses a 64k boundary and we need to | |
71a39c98 | 149 | insert an addi to adjust r11. */ |
a078d95a | 150 | #define STD_R2_0R1 0xf8410000 /* std %r2,0+40(%r1) */ |
71a39c98 AM |
151 | #define ADDIS_R11_R2 0x3d620000 /* addis %r11,%r2,xxx@ha */ |
152 | #define LD_R12_0R11 0xe98b0000 /* ld %r12,xxx+0@l(%r11) */ | |
153 | #define MTCTR_R12 0x7d8903a6 /* mtctr %r12 */ | |
154 | #define LD_R2_0R11 0xe84b0000 /* ld %r2,xxx+8@l(%r11) */ | |
155 | #define LD_R11_0R11 0xe96b0000 /* ld %r11,xxx+16@l(%r11) */ | |
5d1634d7 AM |
156 | #define BCTR 0x4e800420 /* bctr */ |
157 | ||
71a39c98 | 158 | #define ADDI_R11_R11 0x396b0000 /* addi %r11,%r11,off@l */ |
ad8e1ba5 AM |
159 | #define ADDIS_R2_R2 0x3c420000 /* addis %r2,%r2,off@ha */ |
160 | #define ADDI_R2_R2 0x38420000 /* addi %r2,%r2,off@l */ | |
161 | ||
71a39c98 AM |
162 | #define XOR_R2_R12_R12 0x7d826278 /* xor %r2,%r12,%r12 */ |
163 | #define ADD_R11_R11_R2 0x7d6b1214 /* add %r11,%r11,%r2 */ | |
164 | #define XOR_R11_R12_R12 0x7d8b6278 /* xor %r11,%r12,%r12 */ | |
794e51c0 AM |
165 | #define ADD_R2_R2_R11 0x7c425a14 /* add %r2,%r2,%r11 */ |
166 | #define CMPLDI_R2_0 0x28220000 /* cmpldi %r2,0 */ | |
167 | #define BNECTR 0x4ca20420 /* bnectr+ */ | |
168 | #define BNECTR_P4 0x4ce20420 /* bnectr+ */ | |
169 | ||
71a39c98 | 170 | #define LD_R12_0R2 0xe9820000 /* ld %r12,xxx+0(%r2) */ |
ac2df442 AM |
171 | #define LD_R11_0R2 0xe9620000 /* ld %r11,xxx+0(%r2) */ |
172 | #define LD_R2_0R2 0xe8420000 /* ld %r2,xxx+0(%r2) */ | |
173 | ||
a078d95a | 174 | #define LD_R2_0R1 0xe8410000 /* ld %r2,0(%r1) */ |
ad8e1ba5 | 175 | |
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 | |
5bd4f169 | 238 | \f |
f5e87a1d | 239 | #define ONES(n) (((bfd_vma) 1 << ((n) - 1) << 1) - 1) |
b34976b6 | 240 | |
5bd4f169 | 241 | /* Relocation HOWTO's. */ |
04c9666a | 242 | static reloc_howto_type *ppc64_elf_howto_table[(int) R_PPC64_max]; |
5bd4f169 AM |
243 | |
244 | static reloc_howto_type ppc64_elf_howto_raw[] = { | |
245 | /* This reloc does nothing. */ | |
246 | HOWTO (R_PPC64_NONE, /* type */ | |
247 | 0, /* rightshift */ | |
411e1bfb AM |
248 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
249 | 32, /* bitsize */ | |
b34976b6 | 250 | FALSE, /* pc_relative */ |
5bd4f169 | 251 | 0, /* bitpos */ |
f5e87a1d | 252 | complain_overflow_dont, /* complain_on_overflow */ |
5bd4f169 AM |
253 | bfd_elf_generic_reloc, /* special_function */ |
254 | "R_PPC64_NONE", /* name */ | |
b34976b6 | 255 | FALSE, /* partial_inplace */ |
d006db6c | 256 | 0, /* src_mask */ |
5bd4f169 | 257 | 0, /* dst_mask */ |
b34976b6 | 258 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
259 | |
260 | /* A standard 32 bit relocation. */ | |
261 | HOWTO (R_PPC64_ADDR32, /* type */ | |
262 | 0, /* rightshift */ | |
263 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
264 | 32, /* bitsize */ | |
b34976b6 | 265 | FALSE, /* pc_relative */ |
5bd4f169 AM |
266 | 0, /* bitpos */ |
267 | complain_overflow_bitfield, /* complain_on_overflow */ | |
268 | bfd_elf_generic_reloc, /* special_function */ | |
269 | "R_PPC64_ADDR32", /* name */ | |
b34976b6 | 270 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
271 | 0, /* src_mask */ |
272 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 273 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
274 | |
275 | /* An absolute 26 bit branch; the lower two bits must be zero. | |
276 | FIXME: we don't check that, we just clear them. */ | |
277 | HOWTO (R_PPC64_ADDR24, /* type */ | |
278 | 0, /* rightshift */ | |
279 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
280 | 26, /* bitsize */ | |
b34976b6 | 281 | FALSE, /* pc_relative */ |
5bd4f169 AM |
282 | 0, /* bitpos */ |
283 | complain_overflow_bitfield, /* complain_on_overflow */ | |
284 | bfd_elf_generic_reloc, /* special_function */ | |
285 | "R_PPC64_ADDR24", /* name */ | |
b34976b6 | 286 | FALSE, /* partial_inplace */ |
d006db6c | 287 | 0, /* src_mask */ |
f5e87a1d | 288 | 0x03fffffc, /* dst_mask */ |
b34976b6 | 289 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
290 | |
291 | /* A standard 16 bit relocation. */ | |
292 | HOWTO (R_PPC64_ADDR16, /* type */ | |
293 | 0, /* rightshift */ | |
294 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
295 | 16, /* bitsize */ | |
b34976b6 | 296 | FALSE, /* pc_relative */ |
5bd4f169 AM |
297 | 0, /* bitpos */ |
298 | complain_overflow_bitfield, /* complain_on_overflow */ | |
299 | bfd_elf_generic_reloc, /* special_function */ | |
300 | "R_PPC64_ADDR16", /* name */ | |
b34976b6 | 301 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
302 | 0, /* src_mask */ |
303 | 0xffff, /* dst_mask */ | |
b34976b6 | 304 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
305 | |
306 | /* A 16 bit relocation without overflow. */ | |
307 | HOWTO (R_PPC64_ADDR16_LO, /* type */ | |
308 | 0, /* rightshift */ | |
309 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
310 | 16, /* bitsize */ | |
b34976b6 | 311 | FALSE, /* pc_relative */ |
5bd4f169 AM |
312 | 0, /* bitpos */ |
313 | complain_overflow_dont,/* complain_on_overflow */ | |
314 | bfd_elf_generic_reloc, /* special_function */ | |
315 | "R_PPC64_ADDR16_LO", /* name */ | |
b34976b6 | 316 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
317 | 0, /* src_mask */ |
318 | 0xffff, /* dst_mask */ | |
b34976b6 | 319 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
320 | |
321 | /* Bits 16-31 of an address. */ | |
322 | HOWTO (R_PPC64_ADDR16_HI, /* type */ | |
323 | 16, /* rightshift */ | |
324 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
325 | 16, /* bitsize */ | |
b34976b6 | 326 | FALSE, /* pc_relative */ |
5bd4f169 | 327 | 0, /* bitpos */ |
f9c6b907 | 328 | complain_overflow_signed, /* complain_on_overflow */ |
5bd4f169 AM |
329 | bfd_elf_generic_reloc, /* special_function */ |
330 | "R_PPC64_ADDR16_HI", /* name */ | |
b34976b6 | 331 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
332 | 0, /* src_mask */ |
333 | 0xffff, /* dst_mask */ | |
b34976b6 | 334 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
335 | |
336 | /* Bits 16-31 of an address, plus 1 if the contents of the low 16 | |
337 | bits, treated as a signed number, is negative. */ | |
338 | HOWTO (R_PPC64_ADDR16_HA, /* type */ | |
339 | 16, /* rightshift */ | |
340 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
341 | 16, /* bitsize */ | |
b34976b6 | 342 | FALSE, /* pc_relative */ |
5bd4f169 | 343 | 0, /* bitpos */ |
f9c6b907 | 344 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 345 | ppc64_elf_ha_reloc, /* special_function */ |
5bd4f169 | 346 | "R_PPC64_ADDR16_HA", /* name */ |
b34976b6 | 347 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
348 | 0, /* src_mask */ |
349 | 0xffff, /* dst_mask */ | |
b34976b6 | 350 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
351 | |
352 | /* An absolute 16 bit branch; the lower two bits must be zero. | |
353 | FIXME: we don't check that, we just clear them. */ | |
354 | HOWTO (R_PPC64_ADDR14, /* type */ | |
355 | 0, /* rightshift */ | |
356 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
357 | 16, /* bitsize */ | |
b34976b6 | 358 | FALSE, /* pc_relative */ |
5bd4f169 AM |
359 | 0, /* bitpos */ |
360 | complain_overflow_bitfield, /* complain_on_overflow */ | |
2441e016 | 361 | ppc64_elf_branch_reloc, /* special_function */ |
5bd4f169 | 362 | "R_PPC64_ADDR14", /* name */ |
b34976b6 | 363 | FALSE, /* partial_inplace */ |
d006db6c | 364 | 0, /* src_mask */ |
f5e87a1d | 365 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 366 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
367 | |
368 | /* An absolute 16 bit branch, for which bit 10 should be set to | |
369 | indicate that the branch is expected to be taken. The lower two | |
370 | bits must be zero. */ | |
371 | HOWTO (R_PPC64_ADDR14_BRTAKEN, /* type */ | |
372 | 0, /* rightshift */ | |
373 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
374 | 16, /* bitsize */ | |
b34976b6 | 375 | FALSE, /* pc_relative */ |
5bd4f169 AM |
376 | 0, /* bitpos */ |
377 | complain_overflow_bitfield, /* complain_on_overflow */ | |
805fc799 | 378 | ppc64_elf_brtaken_reloc, /* special_function */ |
5bd4f169 | 379 | "R_PPC64_ADDR14_BRTAKEN",/* name */ |
b34976b6 | 380 | FALSE, /* partial_inplace */ |
d006db6c | 381 | 0, /* src_mask */ |
f5e87a1d | 382 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 383 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
384 | |
385 | /* An absolute 16 bit branch, for which bit 10 should be set to | |
386 | indicate that the branch is not expected to be taken. The lower | |
387 | two bits must be zero. */ | |
388 | HOWTO (R_PPC64_ADDR14_BRNTAKEN, /* type */ | |
389 | 0, /* rightshift */ | |
390 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
391 | 16, /* bitsize */ | |
b34976b6 | 392 | FALSE, /* pc_relative */ |
5bd4f169 AM |
393 | 0, /* bitpos */ |
394 | complain_overflow_bitfield, /* complain_on_overflow */ | |
805fc799 | 395 | ppc64_elf_brtaken_reloc, /* special_function */ |
5bd4f169 | 396 | "R_PPC64_ADDR14_BRNTAKEN",/* name */ |
b34976b6 | 397 | FALSE, /* partial_inplace */ |
d006db6c | 398 | 0, /* src_mask */ |
f5e87a1d | 399 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 400 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
401 | |
402 | /* A relative 26 bit branch; the lower two bits must be zero. */ | |
403 | HOWTO (R_PPC64_REL24, /* type */ | |
404 | 0, /* rightshift */ | |
405 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
406 | 26, /* bitsize */ | |
b34976b6 | 407 | TRUE, /* pc_relative */ |
5bd4f169 AM |
408 | 0, /* bitpos */ |
409 | complain_overflow_signed, /* complain_on_overflow */ | |
2441e016 | 410 | ppc64_elf_branch_reloc, /* special_function */ |
5bd4f169 | 411 | "R_PPC64_REL24", /* name */ |
b34976b6 | 412 | FALSE, /* partial_inplace */ |
d006db6c | 413 | 0, /* src_mask */ |
f5e87a1d | 414 | 0x03fffffc, /* dst_mask */ |
b34976b6 | 415 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
416 | |
417 | /* A relative 16 bit branch; the lower two bits must be zero. */ | |
418 | HOWTO (R_PPC64_REL14, /* type */ | |
419 | 0, /* rightshift */ | |
420 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
421 | 16, /* bitsize */ | |
b34976b6 | 422 | TRUE, /* pc_relative */ |
5bd4f169 AM |
423 | 0, /* bitpos */ |
424 | complain_overflow_signed, /* complain_on_overflow */ | |
2441e016 | 425 | ppc64_elf_branch_reloc, /* special_function */ |
5bd4f169 | 426 | "R_PPC64_REL14", /* name */ |
b34976b6 | 427 | FALSE, /* partial_inplace */ |
d006db6c | 428 | 0, /* src_mask */ |
f5e87a1d | 429 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 430 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
431 | |
432 | /* A relative 16 bit branch. Bit 10 should be set to indicate that | |
433 | the branch is expected to be taken. The lower two bits must be | |
434 | zero. */ | |
435 | HOWTO (R_PPC64_REL14_BRTAKEN, /* type */ | |
436 | 0, /* rightshift */ | |
437 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
438 | 16, /* bitsize */ | |
b34976b6 | 439 | TRUE, /* pc_relative */ |
5bd4f169 AM |
440 | 0, /* bitpos */ |
441 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 442 | ppc64_elf_brtaken_reloc, /* special_function */ |
5bd4f169 | 443 | "R_PPC64_REL14_BRTAKEN", /* name */ |
b34976b6 | 444 | FALSE, /* partial_inplace */ |
d006db6c | 445 | 0, /* src_mask */ |
f5e87a1d | 446 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 447 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
448 | |
449 | /* A relative 16 bit branch. Bit 10 should be set to indicate that | |
450 | the branch is not expected to be taken. The lower two bits must | |
451 | be zero. */ | |
452 | HOWTO (R_PPC64_REL14_BRNTAKEN, /* type */ | |
453 | 0, /* rightshift */ | |
454 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
455 | 16, /* bitsize */ | |
b34976b6 | 456 | TRUE, /* pc_relative */ |
5bd4f169 AM |
457 | 0, /* bitpos */ |
458 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 459 | ppc64_elf_brtaken_reloc, /* special_function */ |
5bd4f169 | 460 | "R_PPC64_REL14_BRNTAKEN",/* name */ |
b34976b6 | 461 | FALSE, /* partial_inplace */ |
d006db6c | 462 | 0, /* src_mask */ |
f5e87a1d | 463 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 464 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
465 | |
466 | /* Like R_PPC64_ADDR16, but referring to the GOT table entry for the | |
467 | symbol. */ | |
468 | HOWTO (R_PPC64_GOT16, /* type */ | |
469 | 0, /* rightshift */ | |
470 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
471 | 16, /* bitsize */ | |
b34976b6 | 472 | FALSE, /* pc_relative */ |
5bd4f169 AM |
473 | 0, /* bitpos */ |
474 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 475 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 476 | "R_PPC64_GOT16", /* name */ |
b34976b6 | 477 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
478 | 0, /* src_mask */ |
479 | 0xffff, /* dst_mask */ | |
b34976b6 | 480 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
481 | |
482 | /* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for | |
483 | the symbol. */ | |
484 | HOWTO (R_PPC64_GOT16_LO, /* type */ | |
485 | 0, /* rightshift */ | |
486 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
487 | 16, /* bitsize */ | |
b34976b6 | 488 | FALSE, /* pc_relative */ |
5bd4f169 AM |
489 | 0, /* bitpos */ |
490 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 491 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 492 | "R_PPC64_GOT16_LO", /* name */ |
b34976b6 | 493 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
494 | 0, /* src_mask */ |
495 | 0xffff, /* dst_mask */ | |
b34976b6 | 496 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
497 | |
498 | /* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for | |
499 | the symbol. */ | |
500 | HOWTO (R_PPC64_GOT16_HI, /* type */ | |
501 | 16, /* rightshift */ | |
502 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
503 | 16, /* bitsize */ | |
b34976b6 | 504 | FALSE, /* pc_relative */ |
5bd4f169 | 505 | 0, /* bitpos */ |
f9c6b907 | 506 | complain_overflow_signed,/* complain_on_overflow */ |
805fc799 | 507 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 508 | "R_PPC64_GOT16_HI", /* name */ |
b34976b6 | 509 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
510 | 0, /* src_mask */ |
511 | 0xffff, /* dst_mask */ | |
b34976b6 | 512 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
513 | |
514 | /* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for | |
515 | the symbol. */ | |
516 | HOWTO (R_PPC64_GOT16_HA, /* type */ | |
517 | 16, /* rightshift */ | |
518 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
519 | 16, /* bitsize */ | |
b34976b6 | 520 | FALSE, /* pc_relative */ |
5bd4f169 | 521 | 0, /* bitpos */ |
f9c6b907 | 522 | complain_overflow_signed,/* complain_on_overflow */ |
805fc799 | 523 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 524 | "R_PPC64_GOT16_HA", /* name */ |
b34976b6 | 525 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
526 | 0, /* src_mask */ |
527 | 0xffff, /* dst_mask */ | |
b34976b6 | 528 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
529 | |
530 | /* This is used only by the dynamic linker. The symbol should exist | |
531 | both in the object being run and in some shared library. The | |
532 | dynamic linker copies the data addressed by the symbol from the | |
533 | shared library into the object, because the object being | |
534 | run has to have the data at some particular address. */ | |
535 | HOWTO (R_PPC64_COPY, /* type */ | |
536 | 0, /* rightshift */ | |
f5e87a1d AM |
537 | 0, /* this one is variable size */ |
538 | 0, /* bitsize */ | |
b34976b6 | 539 | FALSE, /* pc_relative */ |
5bd4f169 | 540 | 0, /* bitpos */ |
f5e87a1d AM |
541 | complain_overflow_dont, /* complain_on_overflow */ |
542 | ppc64_elf_unhandled_reloc, /* special_function */ | |
5bd4f169 | 543 | "R_PPC64_COPY", /* name */ |
b34976b6 | 544 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
545 | 0, /* src_mask */ |
546 | 0, /* dst_mask */ | |
b34976b6 | 547 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
548 | |
549 | /* Like R_PPC64_ADDR64, but used when setting global offset table | |
550 | entries. */ | |
551 | HOWTO (R_PPC64_GLOB_DAT, /* type */ | |
552 | 0, /* rightshift */ | |
553 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
554 | 64, /* bitsize */ | |
b34976b6 | 555 | FALSE, /* pc_relative */ |
5bd4f169 AM |
556 | 0, /* bitpos */ |
557 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 558 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 559 | "R_PPC64_GLOB_DAT", /* name */ |
b34976b6 | 560 | FALSE, /* partial_inplace */ |
5bd4f169 | 561 | 0, /* src_mask */ |
f5e87a1d | 562 | ONES (64), /* dst_mask */ |
b34976b6 | 563 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
564 | |
565 | /* Created by the link editor. Marks a procedure linkage table | |
566 | entry for a symbol. */ | |
567 | HOWTO (R_PPC64_JMP_SLOT, /* type */ | |
568 | 0, /* rightshift */ | |
569 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
570 | 0, /* bitsize */ | |
b34976b6 | 571 | FALSE, /* pc_relative */ |
5bd4f169 AM |
572 | 0, /* bitpos */ |
573 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 574 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 575 | "R_PPC64_JMP_SLOT", /* name */ |
b34976b6 | 576 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
577 | 0, /* src_mask */ |
578 | 0, /* dst_mask */ | |
b34976b6 | 579 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
580 | |
581 | /* Used only by the dynamic linker. When the object is run, this | |
582 | doubleword64 is set to the load address of the object, plus the | |
583 | addend. */ | |
584 | HOWTO (R_PPC64_RELATIVE, /* type */ | |
585 | 0, /* rightshift */ | |
586 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
587 | 64, /* bitsize */ | |
b34976b6 | 588 | FALSE, /* pc_relative */ |
5bd4f169 AM |
589 | 0, /* bitpos */ |
590 | complain_overflow_dont, /* complain_on_overflow */ | |
591 | bfd_elf_generic_reloc, /* special_function */ | |
592 | "R_PPC64_RELATIVE", /* name */ | |
b34976b6 | 593 | FALSE, /* partial_inplace */ |
5bd4f169 | 594 | 0, /* src_mask */ |
f5e87a1d | 595 | ONES (64), /* dst_mask */ |
b34976b6 | 596 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
597 | |
598 | /* Like R_PPC64_ADDR32, but may be unaligned. */ | |
599 | HOWTO (R_PPC64_UADDR32, /* type */ | |
600 | 0, /* rightshift */ | |
601 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
602 | 32, /* bitsize */ | |
b34976b6 | 603 | FALSE, /* pc_relative */ |
5bd4f169 AM |
604 | 0, /* bitpos */ |
605 | complain_overflow_bitfield, /* complain_on_overflow */ | |
606 | bfd_elf_generic_reloc, /* special_function */ | |
607 | "R_PPC64_UADDR32", /* name */ | |
b34976b6 | 608 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
609 | 0, /* src_mask */ |
610 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 611 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
612 | |
613 | /* Like R_PPC64_ADDR16, but may be unaligned. */ | |
614 | HOWTO (R_PPC64_UADDR16, /* type */ | |
615 | 0, /* rightshift */ | |
616 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
617 | 16, /* bitsize */ | |
b34976b6 | 618 | FALSE, /* pc_relative */ |
5bd4f169 AM |
619 | 0, /* bitpos */ |
620 | complain_overflow_bitfield, /* complain_on_overflow */ | |
621 | bfd_elf_generic_reloc, /* special_function */ | |
622 | "R_PPC64_UADDR16", /* name */ | |
b34976b6 | 623 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
624 | 0, /* src_mask */ |
625 | 0xffff, /* dst_mask */ | |
b34976b6 | 626 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
627 | |
628 | /* 32-bit PC relative. */ | |
629 | HOWTO (R_PPC64_REL32, /* type */ | |
630 | 0, /* rightshift */ | |
631 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
632 | 32, /* bitsize */ | |
b34976b6 | 633 | TRUE, /* pc_relative */ |
5bd4f169 | 634 | 0, /* bitpos */ |
cedb70c5 | 635 | /* FIXME: Verify. Was complain_overflow_bitfield. */ |
5bd4f169 AM |
636 | complain_overflow_signed, /* complain_on_overflow */ |
637 | bfd_elf_generic_reloc, /* special_function */ | |
638 | "R_PPC64_REL32", /* name */ | |
b34976b6 | 639 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
640 | 0, /* src_mask */ |
641 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 642 | TRUE), /* pcrel_offset */ |
5bd4f169 | 643 | |
10ed1bba | 644 | /* 32-bit relocation to the symbol's procedure linkage table. */ |
5bd4f169 AM |
645 | HOWTO (R_PPC64_PLT32, /* type */ |
646 | 0, /* rightshift */ | |
647 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
648 | 32, /* bitsize */ | |
b34976b6 | 649 | FALSE, /* pc_relative */ |
5bd4f169 AM |
650 | 0, /* bitpos */ |
651 | complain_overflow_bitfield, /* complain_on_overflow */ | |
805fc799 | 652 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 653 | "R_PPC64_PLT32", /* name */ |
b34976b6 | 654 | FALSE, /* partial_inplace */ |
5bd4f169 | 655 | 0, /* src_mask */ |
f5e87a1d | 656 | 0xffffffff, /* dst_mask */ |
b34976b6 | 657 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
658 | |
659 | /* 32-bit PC relative relocation to the symbol's procedure linkage table. | |
660 | FIXME: R_PPC64_PLTREL32 not supported. */ | |
661 | HOWTO (R_PPC64_PLTREL32, /* type */ | |
662 | 0, /* rightshift */ | |
663 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
664 | 32, /* bitsize */ | |
b34976b6 | 665 | TRUE, /* pc_relative */ |
5bd4f169 AM |
666 | 0, /* bitpos */ |
667 | complain_overflow_signed, /* complain_on_overflow */ | |
668 | bfd_elf_generic_reloc, /* special_function */ | |
669 | "R_PPC64_PLTREL32", /* name */ | |
b34976b6 | 670 | FALSE, /* partial_inplace */ |
5bd4f169 | 671 | 0, /* src_mask */ |
f5e87a1d | 672 | 0xffffffff, /* dst_mask */ |
b34976b6 | 673 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
674 | |
675 | /* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for | |
676 | the symbol. */ | |
677 | HOWTO (R_PPC64_PLT16_LO, /* type */ | |
678 | 0, /* rightshift */ | |
679 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
680 | 16, /* bitsize */ | |
b34976b6 | 681 | FALSE, /* pc_relative */ |
5bd4f169 AM |
682 | 0, /* bitpos */ |
683 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 684 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 685 | "R_PPC64_PLT16_LO", /* name */ |
b34976b6 | 686 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
687 | 0, /* src_mask */ |
688 | 0xffff, /* dst_mask */ | |
b34976b6 | 689 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
690 | |
691 | /* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for | |
692 | the symbol. */ | |
693 | HOWTO (R_PPC64_PLT16_HI, /* type */ | |
694 | 16, /* rightshift */ | |
695 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
696 | 16, /* bitsize */ | |
b34976b6 | 697 | FALSE, /* pc_relative */ |
5bd4f169 | 698 | 0, /* bitpos */ |
f9c6b907 | 699 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 700 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 701 | "R_PPC64_PLT16_HI", /* name */ |
b34976b6 | 702 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
703 | 0, /* src_mask */ |
704 | 0xffff, /* dst_mask */ | |
b34976b6 | 705 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
706 | |
707 | /* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for | |
708 | the symbol. */ | |
709 | HOWTO (R_PPC64_PLT16_HA, /* type */ | |
710 | 16, /* rightshift */ | |
711 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
712 | 16, /* bitsize */ | |
b34976b6 | 713 | FALSE, /* pc_relative */ |
5bd4f169 | 714 | 0, /* bitpos */ |
f9c6b907 | 715 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 716 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 717 | "R_PPC64_PLT16_HA", /* name */ |
b34976b6 | 718 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
719 | 0, /* src_mask */ |
720 | 0xffff, /* dst_mask */ | |
b34976b6 | 721 | FALSE), /* pcrel_offset */ |
5bd4f169 | 722 | |
c061c2d8 | 723 | /* 16-bit section relative relocation. */ |
5bd4f169 AM |
724 | HOWTO (R_PPC64_SECTOFF, /* type */ |
725 | 0, /* rightshift */ | |
c061c2d8 AM |
726 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
727 | 16, /* bitsize */ | |
b34976b6 | 728 | FALSE, /* pc_relative */ |
5bd4f169 AM |
729 | 0, /* bitpos */ |
730 | complain_overflow_bitfield, /* complain_on_overflow */ | |
805fc799 | 731 | ppc64_elf_sectoff_reloc, /* special_function */ |
5bd4f169 | 732 | "R_PPC64_SECTOFF", /* name */ |
b34976b6 | 733 | FALSE, /* partial_inplace */ |
5bd4f169 | 734 | 0, /* src_mask */ |
c061c2d8 | 735 | 0xffff, /* dst_mask */ |
b34976b6 | 736 | FALSE), /* pcrel_offset */ |
5bd4f169 | 737 | |
c061c2d8 | 738 | /* Like R_PPC64_SECTOFF, but no overflow warning. */ |
5bd4f169 AM |
739 | HOWTO (R_PPC64_SECTOFF_LO, /* type */ |
740 | 0, /* rightshift */ | |
741 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
742 | 16, /* bitsize */ | |
b34976b6 | 743 | FALSE, /* pc_relative */ |
5bd4f169 AM |
744 | 0, /* bitpos */ |
745 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 746 | ppc64_elf_sectoff_reloc, /* special_function */ |
5bd4f169 | 747 | "R_PPC64_SECTOFF_LO", /* name */ |
b34976b6 | 748 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
749 | 0, /* src_mask */ |
750 | 0xffff, /* dst_mask */ | |
b34976b6 | 751 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
752 | |
753 | /* 16-bit upper half section relative relocation. */ | |
754 | HOWTO (R_PPC64_SECTOFF_HI, /* type */ | |
755 | 16, /* rightshift */ | |
756 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
757 | 16, /* bitsize */ | |
b34976b6 | 758 | FALSE, /* pc_relative */ |
5bd4f169 | 759 | 0, /* bitpos */ |
f9c6b907 | 760 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 761 | ppc64_elf_sectoff_reloc, /* special_function */ |
5bd4f169 | 762 | "R_PPC64_SECTOFF_HI", /* name */ |
b34976b6 | 763 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
764 | 0, /* src_mask */ |
765 | 0xffff, /* dst_mask */ | |
b34976b6 | 766 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
767 | |
768 | /* 16-bit upper half adjusted section relative relocation. */ | |
769 | HOWTO (R_PPC64_SECTOFF_HA, /* type */ | |
770 | 16, /* rightshift */ | |
771 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
772 | 16, /* bitsize */ | |
b34976b6 | 773 | FALSE, /* pc_relative */ |
5bd4f169 | 774 | 0, /* bitpos */ |
f9c6b907 | 775 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 776 | ppc64_elf_sectoff_ha_reloc, /* special_function */ |
5bd4f169 | 777 | "R_PPC64_SECTOFF_HA", /* name */ |
b34976b6 | 778 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
779 | 0, /* src_mask */ |
780 | 0xffff, /* dst_mask */ | |
b34976b6 | 781 | FALSE), /* pcrel_offset */ |
5bd4f169 | 782 | |
04c9666a AM |
783 | /* Like R_PPC64_REL24 without touching the two least significant bits. */ |
784 | HOWTO (R_PPC64_REL30, /* type */ | |
5bd4f169 AM |
785 | 2, /* rightshift */ |
786 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
787 | 30, /* bitsize */ | |
b34976b6 | 788 | TRUE, /* pc_relative */ |
5bd4f169 AM |
789 | 0, /* bitpos */ |
790 | complain_overflow_dont, /* complain_on_overflow */ | |
791 | bfd_elf_generic_reloc, /* special_function */ | |
04c9666a | 792 | "R_PPC64_REL30", /* name */ |
b34976b6 | 793 | FALSE, /* partial_inplace */ |
d006db6c | 794 | 0, /* src_mask */ |
5bd4f169 | 795 | 0xfffffffc, /* dst_mask */ |
b34976b6 | 796 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
797 | |
798 | /* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */ | |
799 | ||
800 | /* A standard 64-bit relocation. */ | |
801 | HOWTO (R_PPC64_ADDR64, /* type */ | |
802 | 0, /* rightshift */ | |
803 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
804 | 64, /* bitsize */ | |
b34976b6 | 805 | FALSE, /* pc_relative */ |
5bd4f169 AM |
806 | 0, /* bitpos */ |
807 | complain_overflow_dont, /* complain_on_overflow */ | |
808 | bfd_elf_generic_reloc, /* special_function */ | |
809 | "R_PPC64_ADDR64", /* name */ | |
b34976b6 | 810 | FALSE, /* partial_inplace */ |
5bd4f169 | 811 | 0, /* src_mask */ |
f5e87a1d | 812 | ONES (64), /* dst_mask */ |
b34976b6 | 813 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
814 | |
815 | /* The bits 32-47 of an address. */ | |
816 | HOWTO (R_PPC64_ADDR16_HIGHER, /* type */ | |
817 | 32, /* rightshift */ | |
818 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
819 | 16, /* bitsize */ | |
b34976b6 | 820 | FALSE, /* pc_relative */ |
5bd4f169 AM |
821 | 0, /* bitpos */ |
822 | complain_overflow_dont, /* complain_on_overflow */ | |
823 | bfd_elf_generic_reloc, /* special_function */ | |
824 | "R_PPC64_ADDR16_HIGHER", /* name */ | |
b34976b6 | 825 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
826 | 0, /* src_mask */ |
827 | 0xffff, /* dst_mask */ | |
b34976b6 | 828 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
829 | |
830 | /* The bits 32-47 of an address, plus 1 if the contents of the low | |
831 | 16 bits, treated as a signed number, is negative. */ | |
832 | HOWTO (R_PPC64_ADDR16_HIGHERA, /* type */ | |
833 | 32, /* rightshift */ | |
834 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
835 | 16, /* bitsize */ | |
b34976b6 | 836 | FALSE, /* pc_relative */ |
5bd4f169 AM |
837 | 0, /* bitpos */ |
838 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 839 | ppc64_elf_ha_reloc, /* special_function */ |
5bd4f169 | 840 | "R_PPC64_ADDR16_HIGHERA", /* name */ |
b34976b6 | 841 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
842 | 0, /* src_mask */ |
843 | 0xffff, /* dst_mask */ | |
b34976b6 | 844 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
845 | |
846 | /* The bits 48-63 of an address. */ | |
847 | HOWTO (R_PPC64_ADDR16_HIGHEST,/* type */ | |
848 | 48, /* rightshift */ | |
849 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
850 | 16, /* bitsize */ | |
b34976b6 | 851 | FALSE, /* pc_relative */ |
5bd4f169 AM |
852 | 0, /* bitpos */ |
853 | complain_overflow_dont, /* complain_on_overflow */ | |
854 | bfd_elf_generic_reloc, /* special_function */ | |
855 | "R_PPC64_ADDR16_HIGHEST", /* name */ | |
b34976b6 | 856 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
857 | 0, /* src_mask */ |
858 | 0xffff, /* dst_mask */ | |
b34976b6 | 859 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
860 | |
861 | /* The bits 48-63 of an address, plus 1 if the contents of the low | |
862 | 16 bits, treated as a signed number, is negative. */ | |
863 | HOWTO (R_PPC64_ADDR16_HIGHESTA,/* type */ | |
864 | 48, /* rightshift */ | |
865 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
866 | 16, /* bitsize */ | |
b34976b6 | 867 | FALSE, /* pc_relative */ |
5bd4f169 AM |
868 | 0, /* bitpos */ |
869 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 870 | ppc64_elf_ha_reloc, /* special_function */ |
5bd4f169 | 871 | "R_PPC64_ADDR16_HIGHESTA", /* name */ |
b34976b6 | 872 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
873 | 0, /* src_mask */ |
874 | 0xffff, /* dst_mask */ | |
b34976b6 | 875 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
876 | |
877 | /* Like ADDR64, but may be unaligned. */ | |
878 | HOWTO (R_PPC64_UADDR64, /* type */ | |
879 | 0, /* rightshift */ | |
880 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
881 | 64, /* bitsize */ | |
b34976b6 | 882 | FALSE, /* pc_relative */ |
5bd4f169 AM |
883 | 0, /* bitpos */ |
884 | complain_overflow_dont, /* complain_on_overflow */ | |
885 | bfd_elf_generic_reloc, /* special_function */ | |
886 | "R_PPC64_UADDR64", /* name */ | |
b34976b6 | 887 | FALSE, /* partial_inplace */ |
5bd4f169 | 888 | 0, /* src_mask */ |
f5e87a1d | 889 | ONES (64), /* dst_mask */ |
b34976b6 | 890 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
891 | |
892 | /* 64-bit relative relocation. */ | |
893 | HOWTO (R_PPC64_REL64, /* type */ | |
894 | 0, /* rightshift */ | |
895 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
896 | 64, /* bitsize */ | |
b34976b6 | 897 | TRUE, /* pc_relative */ |
5bd4f169 AM |
898 | 0, /* bitpos */ |
899 | complain_overflow_dont, /* complain_on_overflow */ | |
900 | bfd_elf_generic_reloc, /* special_function */ | |
901 | "R_PPC64_REL64", /* name */ | |
b34976b6 | 902 | FALSE, /* partial_inplace */ |
5bd4f169 | 903 | 0, /* src_mask */ |
f5e87a1d | 904 | ONES (64), /* dst_mask */ |
b34976b6 | 905 | TRUE), /* pcrel_offset */ |
5bd4f169 | 906 | |
cedb70c5 | 907 | /* 64-bit relocation to the symbol's procedure linkage table. */ |
5bd4f169 AM |
908 | HOWTO (R_PPC64_PLT64, /* type */ |
909 | 0, /* rightshift */ | |
910 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
911 | 64, /* bitsize */ | |
b34976b6 | 912 | FALSE, /* pc_relative */ |
5bd4f169 AM |
913 | 0, /* bitpos */ |
914 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 915 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 916 | "R_PPC64_PLT64", /* name */ |
b34976b6 | 917 | FALSE, /* partial_inplace */ |
5bd4f169 | 918 | 0, /* src_mask */ |
f5e87a1d | 919 | ONES (64), /* dst_mask */ |
b34976b6 | 920 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
921 | |
922 | /* 64-bit PC relative relocation to the symbol's procedure linkage | |
923 | table. */ | |
924 | /* FIXME: R_PPC64_PLTREL64 not supported. */ | |
925 | HOWTO (R_PPC64_PLTREL64, /* type */ | |
926 | 0, /* rightshift */ | |
927 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
928 | 64, /* bitsize */ | |
b34976b6 | 929 | TRUE, /* pc_relative */ |
5bd4f169 AM |
930 | 0, /* bitpos */ |
931 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 932 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 933 | "R_PPC64_PLTREL64", /* name */ |
b34976b6 | 934 | FALSE, /* partial_inplace */ |
5bd4f169 | 935 | 0, /* src_mask */ |
f5e87a1d | 936 | ONES (64), /* dst_mask */ |
b34976b6 | 937 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
938 | |
939 | /* 16 bit TOC-relative relocation. */ | |
940 | ||
941 | /* R_PPC64_TOC16 47 half16* S + A - .TOC. */ | |
942 | HOWTO (R_PPC64_TOC16, /* type */ | |
943 | 0, /* rightshift */ | |
944 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
945 | 16, /* bitsize */ | |
b34976b6 | 946 | FALSE, /* pc_relative */ |
5bd4f169 AM |
947 | 0, /* bitpos */ |
948 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 949 | ppc64_elf_toc_reloc, /* special_function */ |
5bd4f169 | 950 | "R_PPC64_TOC16", /* name */ |
b34976b6 | 951 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
952 | 0, /* src_mask */ |
953 | 0xffff, /* dst_mask */ | |
b34976b6 | 954 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
955 | |
956 | /* 16 bit TOC-relative relocation without overflow. */ | |
957 | ||
958 | /* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */ | |
959 | HOWTO (R_PPC64_TOC16_LO, /* type */ | |
960 | 0, /* rightshift */ | |
961 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
962 | 16, /* bitsize */ | |
b34976b6 | 963 | FALSE, /* pc_relative */ |
5bd4f169 AM |
964 | 0, /* bitpos */ |
965 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 966 | ppc64_elf_toc_reloc, /* special_function */ |
5bd4f169 | 967 | "R_PPC64_TOC16_LO", /* name */ |
b34976b6 | 968 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
969 | 0, /* src_mask */ |
970 | 0xffff, /* dst_mask */ | |
b34976b6 | 971 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
972 | |
973 | /* 16 bit TOC-relative relocation, high 16 bits. */ | |
974 | ||
975 | /* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */ | |
976 | HOWTO (R_PPC64_TOC16_HI, /* type */ | |
977 | 16, /* rightshift */ | |
978 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
979 | 16, /* bitsize */ | |
b34976b6 | 980 | FALSE, /* pc_relative */ |
5bd4f169 | 981 | 0, /* bitpos */ |
f9c6b907 | 982 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 983 | ppc64_elf_toc_reloc, /* special_function */ |
5bd4f169 | 984 | "R_PPC64_TOC16_HI", /* name */ |
b34976b6 | 985 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
986 | 0, /* src_mask */ |
987 | 0xffff, /* dst_mask */ | |
b34976b6 | 988 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
989 | |
990 | /* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the | |
991 | contents of the low 16 bits, treated as a signed number, is | |
992 | negative. */ | |
993 | ||
994 | /* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */ | |
995 | HOWTO (R_PPC64_TOC16_HA, /* type */ | |
996 | 16, /* rightshift */ | |
997 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
998 | 16, /* bitsize */ | |
b34976b6 | 999 | FALSE, /* pc_relative */ |
5bd4f169 | 1000 | 0, /* bitpos */ |
f9c6b907 | 1001 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 1002 | ppc64_elf_toc_ha_reloc, /* special_function */ |
5bd4f169 | 1003 | "R_PPC64_TOC16_HA", /* name */ |
b34976b6 | 1004 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1005 | 0, /* src_mask */ |
1006 | 0xffff, /* dst_mask */ | |
b34976b6 | 1007 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
1008 | |
1009 | /* 64-bit relocation; insert value of TOC base (.TOC.). */ | |
1010 | ||
1011 | /* R_PPC64_TOC 51 doubleword64 .TOC. */ | |
1012 | HOWTO (R_PPC64_TOC, /* type */ | |
1013 | 0, /* rightshift */ | |
1014 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
1015 | 64, /* bitsize */ | |
b34976b6 | 1016 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1017 | 0, /* bitpos */ |
1018 | complain_overflow_bitfield, /* complain_on_overflow */ | |
805fc799 | 1019 | ppc64_elf_toc64_reloc, /* special_function */ |
5bd4f169 | 1020 | "R_PPC64_TOC", /* name */ |
b34976b6 | 1021 | FALSE, /* partial_inplace */ |
5bd4f169 | 1022 | 0, /* src_mask */ |
f5e87a1d | 1023 | ONES (64), /* dst_mask */ |
b34976b6 | 1024 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
1025 | |
1026 | /* Like R_PPC64_GOT16, but also informs the link editor that the | |
1027 | value to relocate may (!) refer to a PLT entry which the link | |
1028 | editor (a) may replace with the symbol value. If the link editor | |
1029 | is unable to fully resolve the symbol, it may (b) create a PLT | |
1030 | entry and store the address to the new PLT entry in the GOT. | |
1031 | This permits lazy resolution of function symbols at run time. | |
1032 | The link editor may also skip all of this and just (c) emit a | |
1033 | R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */ | |
1034 | /* FIXME: R_PPC64_PLTGOT16 not implemented. */ | |
1035 | HOWTO (R_PPC64_PLTGOT16, /* type */ | |
1036 | 0, /* rightshift */ | |
1037 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1038 | 16, /* bitsize */ | |
b34976b6 | 1039 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1040 | 0, /* bitpos */ |
1041 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 1042 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb AM |
1043 | "R_PPC64_PLTGOT16", /* name */ |
1044 | FALSE, /* partial_inplace */ | |
1045 | 0, /* src_mask */ | |
1046 | 0xffff, /* dst_mask */ | |
1047 | FALSE), /* pcrel_offset */ | |
1048 | ||
1049 | /* Like R_PPC64_PLTGOT16, but without overflow. */ | |
1050 | /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */ | |
1051 | HOWTO (R_PPC64_PLTGOT16_LO, /* type */ | |
1052 | 0, /* rightshift */ | |
1053 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1054 | 16, /* bitsize */ | |
1055 | FALSE, /* pc_relative */ | |
1056 | 0, /* bitpos */ | |
1057 | complain_overflow_dont, /* complain_on_overflow */ | |
1058 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1059 | "R_PPC64_PLTGOT16_LO", /* name */ | |
1060 | FALSE, /* partial_inplace */ | |
1061 | 0, /* src_mask */ | |
1062 | 0xffff, /* dst_mask */ | |
1063 | FALSE), /* pcrel_offset */ | |
1064 | ||
1065 | /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */ | |
1066 | /* FIXME: R_PPC64_PLTGOT16_HI not implemented. */ | |
1067 | HOWTO (R_PPC64_PLTGOT16_HI, /* type */ | |
1068 | 16, /* rightshift */ | |
1069 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1070 | 16, /* bitsize */ | |
1071 | FALSE, /* pc_relative */ | |
1072 | 0, /* bitpos */ | |
f9c6b907 | 1073 | complain_overflow_signed, /* complain_on_overflow */ |
411e1bfb AM |
1074 | ppc64_elf_unhandled_reloc, /* special_function */ |
1075 | "R_PPC64_PLTGOT16_HI", /* name */ | |
1076 | FALSE, /* partial_inplace */ | |
1077 | 0, /* src_mask */ | |
1078 | 0xffff, /* dst_mask */ | |
1079 | FALSE), /* pcrel_offset */ | |
1080 | ||
1081 | /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus | |
1082 | 1 if the contents of the low 16 bits, treated as a signed number, | |
1083 | is negative. */ | |
1084 | /* FIXME: R_PPC64_PLTGOT16_HA not implemented. */ | |
1085 | HOWTO (R_PPC64_PLTGOT16_HA, /* type */ | |
1086 | 16, /* rightshift */ | |
1087 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1088 | 16, /* bitsize */ | |
1089 | FALSE, /* pc_relative */ | |
1090 | 0, /* bitpos */ | |
f9c6b907 | 1091 | complain_overflow_signed, /* complain_on_overflow */ |
411e1bfb AM |
1092 | ppc64_elf_unhandled_reloc, /* special_function */ |
1093 | "R_PPC64_PLTGOT16_HA", /* name */ | |
1094 | FALSE, /* partial_inplace */ | |
1095 | 0, /* src_mask */ | |
1096 | 0xffff, /* dst_mask */ | |
1097 | FALSE), /* pcrel_offset */ | |
1098 | ||
1099 | /* Like R_PPC64_ADDR16, but for instructions with a DS field. */ | |
1100 | HOWTO (R_PPC64_ADDR16_DS, /* type */ | |
1101 | 0, /* rightshift */ | |
1102 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1103 | 16, /* bitsize */ | |
1104 | FALSE, /* pc_relative */ | |
1105 | 0, /* bitpos */ | |
1106 | complain_overflow_bitfield, /* complain_on_overflow */ | |
1107 | bfd_elf_generic_reloc, /* special_function */ | |
1108 | "R_PPC64_ADDR16_DS", /* name */ | |
1109 | FALSE, /* partial_inplace */ | |
1110 | 0, /* src_mask */ | |
1111 | 0xfffc, /* dst_mask */ | |
1112 | FALSE), /* pcrel_offset */ | |
1113 | ||
1114 | /* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */ | |
1115 | HOWTO (R_PPC64_ADDR16_LO_DS, /* type */ | |
1116 | 0, /* rightshift */ | |
1117 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1118 | 16, /* bitsize */ | |
1119 | FALSE, /* pc_relative */ | |
1120 | 0, /* bitpos */ | |
1121 | complain_overflow_dont,/* complain_on_overflow */ | |
1122 | bfd_elf_generic_reloc, /* special_function */ | |
1123 | "R_PPC64_ADDR16_LO_DS",/* name */ | |
1124 | FALSE, /* partial_inplace */ | |
1125 | 0, /* src_mask */ | |
1126 | 0xfffc, /* dst_mask */ | |
1127 | FALSE), /* pcrel_offset */ | |
1128 | ||
1129 | /* Like R_PPC64_GOT16, but for instructions with a DS field. */ | |
1130 | HOWTO (R_PPC64_GOT16_DS, /* type */ | |
1131 | 0, /* rightshift */ | |
1132 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1133 | 16, /* bitsize */ | |
1134 | FALSE, /* pc_relative */ | |
1135 | 0, /* bitpos */ | |
1136 | complain_overflow_signed, /* complain_on_overflow */ | |
1137 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1138 | "R_PPC64_GOT16_DS", /* name */ | |
1139 | FALSE, /* partial_inplace */ | |
1140 | 0, /* src_mask */ | |
1141 | 0xfffc, /* dst_mask */ | |
1142 | FALSE), /* pcrel_offset */ | |
1143 | ||
1144 | /* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */ | |
1145 | HOWTO (R_PPC64_GOT16_LO_DS, /* type */ | |
1146 | 0, /* rightshift */ | |
1147 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1148 | 16, /* bitsize */ | |
1149 | FALSE, /* pc_relative */ | |
1150 | 0, /* bitpos */ | |
1151 | complain_overflow_dont, /* complain_on_overflow */ | |
1152 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1153 | "R_PPC64_GOT16_LO_DS", /* name */ | |
1154 | FALSE, /* partial_inplace */ | |
1155 | 0, /* src_mask */ | |
1156 | 0xfffc, /* dst_mask */ | |
1157 | FALSE), /* pcrel_offset */ | |
1158 | ||
1159 | /* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */ | |
1160 | HOWTO (R_PPC64_PLT16_LO_DS, /* type */ | |
1161 | 0, /* rightshift */ | |
1162 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1163 | 16, /* bitsize */ | |
1164 | FALSE, /* pc_relative */ | |
1165 | 0, /* bitpos */ | |
1166 | complain_overflow_dont, /* complain_on_overflow */ | |
1167 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1168 | "R_PPC64_PLT16_LO_DS", /* name */ | |
1169 | FALSE, /* partial_inplace */ | |
1170 | 0, /* src_mask */ | |
1171 | 0xfffc, /* dst_mask */ | |
1172 | FALSE), /* pcrel_offset */ | |
1173 | ||
1174 | /* Like R_PPC64_SECTOFF, but for instructions with a DS field. */ | |
1175 | HOWTO (R_PPC64_SECTOFF_DS, /* type */ | |
1176 | 0, /* rightshift */ | |
1177 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1178 | 16, /* bitsize */ | |
1179 | FALSE, /* pc_relative */ | |
1180 | 0, /* bitpos */ | |
1181 | complain_overflow_bitfield, /* complain_on_overflow */ | |
1182 | ppc64_elf_sectoff_reloc, /* special_function */ | |
1183 | "R_PPC64_SECTOFF_DS", /* name */ | |
1184 | FALSE, /* partial_inplace */ | |
1185 | 0, /* src_mask */ | |
1186 | 0xfffc, /* dst_mask */ | |
1187 | FALSE), /* pcrel_offset */ | |
1188 | ||
1189 | /* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */ | |
1190 | HOWTO (R_PPC64_SECTOFF_LO_DS, /* type */ | |
1191 | 0, /* rightshift */ | |
1192 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1193 | 16, /* bitsize */ | |
1194 | FALSE, /* pc_relative */ | |
1195 | 0, /* bitpos */ | |
1196 | complain_overflow_dont, /* complain_on_overflow */ | |
1197 | ppc64_elf_sectoff_reloc, /* special_function */ | |
1198 | "R_PPC64_SECTOFF_LO_DS",/* name */ | |
1199 | FALSE, /* partial_inplace */ | |
1200 | 0, /* src_mask */ | |
1201 | 0xfffc, /* dst_mask */ | |
1202 | FALSE), /* pcrel_offset */ | |
1203 | ||
1204 | /* Like R_PPC64_TOC16, but for instructions with a DS field. */ | |
1205 | HOWTO (R_PPC64_TOC16_DS, /* type */ | |
1206 | 0, /* rightshift */ | |
1207 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1208 | 16, /* bitsize */ | |
1209 | FALSE, /* pc_relative */ | |
1210 | 0, /* bitpos */ | |
1211 | complain_overflow_signed, /* complain_on_overflow */ | |
1212 | ppc64_elf_toc_reloc, /* special_function */ | |
1213 | "R_PPC64_TOC16_DS", /* name */ | |
1214 | FALSE, /* partial_inplace */ | |
1215 | 0, /* src_mask */ | |
1216 | 0xfffc, /* dst_mask */ | |
1217 | FALSE), /* pcrel_offset */ | |
1218 | ||
1219 | /* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */ | |
1220 | HOWTO (R_PPC64_TOC16_LO_DS, /* type */ | |
1221 | 0, /* rightshift */ | |
1222 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1223 | 16, /* bitsize */ | |
1224 | FALSE, /* pc_relative */ | |
1225 | 0, /* bitpos */ | |
1226 | complain_overflow_dont, /* complain_on_overflow */ | |
1227 | ppc64_elf_toc_reloc, /* special_function */ | |
1228 | "R_PPC64_TOC16_LO_DS", /* name */ | |
1229 | FALSE, /* partial_inplace */ | |
1230 | 0, /* src_mask */ | |
1231 | 0xfffc, /* dst_mask */ | |
1232 | FALSE), /* pcrel_offset */ | |
1233 | ||
1234 | /* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */ | |
1235 | /* FIXME: R_PPC64_PLTGOT16_DS not implemented. */ | |
6bfdb61b | 1236 | HOWTO (R_PPC64_PLTGOT16_DS, /* type */ |
411e1bfb AM |
1237 | 0, /* rightshift */ |
1238 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1239 | 16, /* bitsize */ | |
1240 | FALSE, /* pc_relative */ | |
1241 | 0, /* bitpos */ | |
1242 | complain_overflow_signed, /* complain_on_overflow */ | |
1243 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1244 | "R_PPC64_PLTGOT16_DS", /* name */ | |
1245 | FALSE, /* partial_inplace */ | |
1246 | 0, /* src_mask */ | |
1247 | 0xfffc, /* dst_mask */ | |
1248 | FALSE), /* pcrel_offset */ | |
1249 | ||
1250 | /* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */ | |
1251 | /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */ | |
1252 | HOWTO (R_PPC64_PLTGOT16_LO_DS,/* type */ | |
1253 | 0, /* rightshift */ | |
1254 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1255 | 16, /* bitsize */ | |
1256 | FALSE, /* pc_relative */ | |
1257 | 0, /* bitpos */ | |
1258 | complain_overflow_dont, /* complain_on_overflow */ | |
1259 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1260 | "R_PPC64_PLTGOT16_LO_DS",/* name */ | |
1261 | FALSE, /* partial_inplace */ | |
1262 | 0, /* src_mask */ | |
1263 | 0xfffc, /* dst_mask */ | |
1264 | FALSE), /* pcrel_offset */ | |
1265 | ||
727fc41e | 1266 | /* Marker relocs for TLS. */ |
411e1bfb AM |
1267 | HOWTO (R_PPC64_TLS, |
1268 | 0, /* rightshift */ | |
1269 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1270 | 32, /* bitsize */ | |
1271 | FALSE, /* pc_relative */ | |
1272 | 0, /* bitpos */ | |
1273 | complain_overflow_dont, /* complain_on_overflow */ | |
1274 | bfd_elf_generic_reloc, /* special_function */ | |
1275 | "R_PPC64_TLS", /* name */ | |
1276 | FALSE, /* partial_inplace */ | |
1277 | 0, /* src_mask */ | |
1278 | 0, /* dst_mask */ | |
1279 | FALSE), /* pcrel_offset */ | |
1280 | ||
727fc41e AM |
1281 | HOWTO (R_PPC64_TLSGD, |
1282 | 0, /* rightshift */ | |
1283 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1284 | 32, /* bitsize */ | |
1285 | FALSE, /* pc_relative */ | |
1286 | 0, /* bitpos */ | |
1287 | complain_overflow_dont, /* complain_on_overflow */ | |
1288 | bfd_elf_generic_reloc, /* special_function */ | |
1289 | "R_PPC64_TLSGD", /* name */ | |
1290 | FALSE, /* partial_inplace */ | |
1291 | 0, /* src_mask */ | |
1292 | 0, /* dst_mask */ | |
1293 | FALSE), /* pcrel_offset */ | |
1294 | ||
1295 | HOWTO (R_PPC64_TLSLD, | |
1296 | 0, /* rightshift */ | |
1297 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1298 | 32, /* bitsize */ | |
1299 | FALSE, /* pc_relative */ | |
1300 | 0, /* bitpos */ | |
1301 | complain_overflow_dont, /* complain_on_overflow */ | |
1302 | bfd_elf_generic_reloc, /* special_function */ | |
1303 | "R_PPC64_TLSLD", /* name */ | |
1304 | FALSE, /* partial_inplace */ | |
1305 | 0, /* src_mask */ | |
1306 | 0, /* dst_mask */ | |
1307 | FALSE), /* pcrel_offset */ | |
1308 | ||
3b421ab3 AM |
1309 | HOWTO (R_PPC64_TOCSAVE, |
1310 | 0, /* rightshift */ | |
1311 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1312 | 32, /* bitsize */ | |
1313 | FALSE, /* pc_relative */ | |
1314 | 0, /* bitpos */ | |
1315 | complain_overflow_dont, /* complain_on_overflow */ | |
1316 | bfd_elf_generic_reloc, /* special_function */ | |
1317 | "R_PPC64_TOCSAVE", /* name */ | |
1318 | FALSE, /* partial_inplace */ | |
1319 | 0, /* src_mask */ | |
1320 | 0, /* dst_mask */ | |
1321 | FALSE), /* pcrel_offset */ | |
1322 | ||
411e1bfb AM |
1323 | /* Computes the load module index of the load module that contains the |
1324 | definition of its TLS sym. */ | |
1325 | HOWTO (R_PPC64_DTPMOD64, | |
1326 | 0, /* rightshift */ | |
1327 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
1328 | 64, /* bitsize */ | |
1329 | FALSE, /* pc_relative */ | |
1330 | 0, /* bitpos */ | |
1331 | complain_overflow_dont, /* complain_on_overflow */ | |
1332 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1333 | "R_PPC64_DTPMOD64", /* name */ | |
1334 | FALSE, /* partial_inplace */ | |
1335 | 0, /* src_mask */ | |
1336 | ONES (64), /* dst_mask */ | |
1337 | FALSE), /* pcrel_offset */ | |
1338 | ||
1339 | /* Computes a dtv-relative displacement, the difference between the value | |
1340 | of sym+add and the base address of the thread-local storage block that | |
1341 | contains the definition of sym, minus 0x8000. */ | |
1342 | HOWTO (R_PPC64_DTPREL64, | |
1343 | 0, /* rightshift */ | |
1344 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
1345 | 64, /* bitsize */ | |
1346 | FALSE, /* pc_relative */ | |
1347 | 0, /* bitpos */ | |
1348 | complain_overflow_dont, /* complain_on_overflow */ | |
1349 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1350 | "R_PPC64_DTPREL64", /* name */ | |
1351 | FALSE, /* partial_inplace */ | |
1352 | 0, /* src_mask */ | |
1353 | ONES (64), /* dst_mask */ | |
1354 | FALSE), /* pcrel_offset */ | |
1355 | ||
1356 | /* A 16 bit dtprel reloc. */ | |
1357 | HOWTO (R_PPC64_DTPREL16, | |
1358 | 0, /* rightshift */ | |
1359 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1360 | 16, /* bitsize */ | |
1361 | FALSE, /* pc_relative */ | |
1362 | 0, /* bitpos */ | |
1363 | complain_overflow_signed, /* complain_on_overflow */ | |
1364 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1365 | "R_PPC64_DTPREL16", /* name */ | |
1366 | FALSE, /* partial_inplace */ | |
1367 | 0, /* src_mask */ | |
1368 | 0xffff, /* dst_mask */ | |
1369 | FALSE), /* pcrel_offset */ | |
1370 | ||
1371 | /* Like DTPREL16, but no overflow. */ | |
1372 | HOWTO (R_PPC64_DTPREL16_LO, | |
1373 | 0, /* rightshift */ | |
1374 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1375 | 16, /* bitsize */ | |
1376 | FALSE, /* pc_relative */ | |
1377 | 0, /* bitpos */ | |
1378 | complain_overflow_dont, /* complain_on_overflow */ | |
1379 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1380 | "R_PPC64_DTPREL16_LO", /* name */ | |
1381 | FALSE, /* partial_inplace */ | |
1382 | 0, /* src_mask */ | |
1383 | 0xffff, /* dst_mask */ | |
1384 | FALSE), /* pcrel_offset */ | |
1385 | ||
1386 | /* Like DTPREL16_LO, but next higher group of 16 bits. */ | |
1387 | HOWTO (R_PPC64_DTPREL16_HI, | |
1388 | 16, /* rightshift */ | |
1389 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1390 | 16, /* bitsize */ | |
1391 | FALSE, /* pc_relative */ | |
1392 | 0, /* bitpos */ | |
f9c6b907 | 1393 | complain_overflow_signed, /* complain_on_overflow */ |
411e1bfb AM |
1394 | ppc64_elf_unhandled_reloc, /* special_function */ |
1395 | "R_PPC64_DTPREL16_HI", /* name */ | |
1396 | FALSE, /* partial_inplace */ | |
1397 | 0, /* src_mask */ | |
1398 | 0xffff, /* dst_mask */ | |
1399 | FALSE), /* pcrel_offset */ | |
1400 | ||
1401 | /* Like DTPREL16_HI, but adjust for low 16 bits. */ | |
1402 | HOWTO (R_PPC64_DTPREL16_HA, | |
1403 | 16, /* rightshift */ | |
1404 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1405 | 16, /* bitsize */ | |
1406 | FALSE, /* pc_relative */ | |
1407 | 0, /* bitpos */ | |
f9c6b907 | 1408 | complain_overflow_signed, /* complain_on_overflow */ |
411e1bfb AM |
1409 | ppc64_elf_unhandled_reloc, /* special_function */ |
1410 | "R_PPC64_DTPREL16_HA", /* name */ | |
1411 | FALSE, /* partial_inplace */ | |
1412 | 0, /* src_mask */ | |
1413 | 0xffff, /* dst_mask */ | |
1414 | FALSE), /* pcrel_offset */ | |
1415 | ||
1416 | /* Like DTPREL16_HI, but next higher group of 16 bits. */ | |
1417 | HOWTO (R_PPC64_DTPREL16_HIGHER, | |
1418 | 32, /* rightshift */ | |
1419 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1420 | 16, /* bitsize */ | |
1421 | FALSE, /* pc_relative */ | |
1422 | 0, /* bitpos */ | |
1423 | complain_overflow_dont, /* complain_on_overflow */ | |
1424 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1425 | "R_PPC64_DTPREL16_HIGHER", /* name */ | |
1426 | FALSE, /* partial_inplace */ | |
1427 | 0, /* src_mask */ | |
1428 | 0xffff, /* dst_mask */ | |
1429 | FALSE), /* pcrel_offset */ | |
1430 | ||
1431 | /* Like DTPREL16_HIGHER, but adjust for low 16 bits. */ | |
1432 | HOWTO (R_PPC64_DTPREL16_HIGHERA, | |
1433 | 32, /* rightshift */ | |
1434 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1435 | 16, /* bitsize */ | |
1436 | FALSE, /* pc_relative */ | |
1437 | 0, /* bitpos */ | |
1438 | complain_overflow_dont, /* complain_on_overflow */ | |
1439 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1440 | "R_PPC64_DTPREL16_HIGHERA", /* name */ | |
1441 | FALSE, /* partial_inplace */ | |
1442 | 0, /* src_mask */ | |
1443 | 0xffff, /* dst_mask */ | |
1444 | FALSE), /* pcrel_offset */ | |
1445 | ||
1446 | /* Like DTPREL16_HIGHER, but next higher group of 16 bits. */ | |
1447 | HOWTO (R_PPC64_DTPREL16_HIGHEST, | |
1448 | 48, /* rightshift */ | |
1449 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1450 | 16, /* bitsize */ | |
1451 | FALSE, /* pc_relative */ | |
1452 | 0, /* bitpos */ | |
1453 | complain_overflow_dont, /* complain_on_overflow */ | |
1454 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1455 | "R_PPC64_DTPREL16_HIGHEST", /* name */ | |
1456 | FALSE, /* partial_inplace */ | |
1457 | 0, /* src_mask */ | |
1458 | 0xffff, /* dst_mask */ | |
1459 | FALSE), /* pcrel_offset */ | |
1460 | ||
1461 | /* Like DTPREL16_HIGHEST, but adjust for low 16 bits. */ | |
1462 | HOWTO (R_PPC64_DTPREL16_HIGHESTA, | |
1463 | 48, /* rightshift */ | |
1464 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1465 | 16, /* bitsize */ | |
1466 | FALSE, /* pc_relative */ | |
1467 | 0, /* bitpos */ | |
1468 | complain_overflow_dont, /* complain_on_overflow */ | |
1469 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1470 | "R_PPC64_DTPREL16_HIGHESTA", /* name */ | |
1471 | FALSE, /* partial_inplace */ | |
1472 | 0, /* src_mask */ | |
1473 | 0xffff, /* dst_mask */ | |
1474 | FALSE), /* pcrel_offset */ | |
1475 | ||
1476 | /* Like DTPREL16, but for insns with a DS field. */ | |
1477 | HOWTO (R_PPC64_DTPREL16_DS, | |
1478 | 0, /* rightshift */ | |
1479 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1480 | 16, /* bitsize */ | |
1481 | FALSE, /* pc_relative */ | |
1482 | 0, /* bitpos */ | |
1483 | complain_overflow_signed, /* complain_on_overflow */ | |
1484 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1485 | "R_PPC64_DTPREL16_DS", /* name */ | |
1486 | FALSE, /* partial_inplace */ | |
1487 | 0, /* src_mask */ | |
1488 | 0xfffc, /* dst_mask */ | |
1489 | FALSE), /* pcrel_offset */ | |
1490 | ||
1491 | /* Like DTPREL16_DS, but no overflow. */ | |
1492 | HOWTO (R_PPC64_DTPREL16_LO_DS, | |
1493 | 0, /* rightshift */ | |
1494 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1495 | 16, /* bitsize */ | |
1496 | FALSE, /* pc_relative */ | |
1497 | 0, /* bitpos */ | |
1498 | complain_overflow_dont, /* complain_on_overflow */ | |
1499 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1500 | "R_PPC64_DTPREL16_LO_DS", /* name */ | |
1501 | FALSE, /* partial_inplace */ | |
1502 | 0, /* src_mask */ | |
1503 | 0xfffc, /* dst_mask */ | |
1504 | FALSE), /* pcrel_offset */ | |
1505 | ||
1506 | /* Computes a tp-relative displacement, the difference between the value of | |
1507 | sym+add and the value of the thread pointer (r13). */ | |
1508 | HOWTO (R_PPC64_TPREL64, | |
1509 | 0, /* rightshift */ | |
1510 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
1511 | 64, /* bitsize */ | |
1512 | FALSE, /* pc_relative */ | |
1513 | 0, /* bitpos */ | |
1514 | complain_overflow_dont, /* complain_on_overflow */ | |
1515 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1516 | "R_PPC64_TPREL64", /* name */ | |
1517 | FALSE, /* partial_inplace */ | |
1518 | 0, /* src_mask */ | |
1519 | ONES (64), /* dst_mask */ | |
1520 | FALSE), /* pcrel_offset */ | |
1521 | ||
1522 | /* A 16 bit tprel reloc. */ | |
1523 | HOWTO (R_PPC64_TPREL16, | |
1524 | 0, /* rightshift */ | |
1525 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1526 | 16, /* bitsize */ | |
1527 | FALSE, /* pc_relative */ | |
1528 | 0, /* bitpos */ | |
1529 | complain_overflow_signed, /* complain_on_overflow */ | |
1530 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1531 | "R_PPC64_TPREL16", /* name */ | |
1532 | FALSE, /* partial_inplace */ | |
1533 | 0, /* src_mask */ | |
1534 | 0xffff, /* dst_mask */ | |
1535 | FALSE), /* pcrel_offset */ | |
1536 | ||
1537 | /* Like TPREL16, but no overflow. */ | |
1538 | HOWTO (R_PPC64_TPREL16_LO, | |
1539 | 0, /* rightshift */ | |
1540 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1541 | 16, /* bitsize */ | |
1542 | FALSE, /* pc_relative */ | |
1543 | 0, /* bitpos */ | |
1544 | complain_overflow_dont, /* complain_on_overflow */ | |
1545 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1546 | "R_PPC64_TPREL16_LO", /* name */ | |
1547 | FALSE, /* partial_inplace */ | |
1548 | 0, /* src_mask */ | |
1549 | 0xffff, /* dst_mask */ | |
1550 | FALSE), /* pcrel_offset */ | |
1551 | ||
1552 | /* Like TPREL16_LO, but next higher group of 16 bits. */ | |
1553 | HOWTO (R_PPC64_TPREL16_HI, | |
1554 | 16, /* rightshift */ | |
1555 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1556 | 16, /* bitsize */ | |
1557 | FALSE, /* pc_relative */ | |
1558 | 0, /* bitpos */ | |
f9c6b907 | 1559 | complain_overflow_signed, /* complain_on_overflow */ |
411e1bfb AM |
1560 | ppc64_elf_unhandled_reloc, /* special_function */ |
1561 | "R_PPC64_TPREL16_HI", /* name */ | |
1562 | FALSE, /* partial_inplace */ | |
1563 | 0, /* src_mask */ | |
1564 | 0xffff, /* dst_mask */ | |
1565 | FALSE), /* pcrel_offset */ | |
1566 | ||
1567 | /* Like TPREL16_HI, but adjust for low 16 bits. */ | |
1568 | HOWTO (R_PPC64_TPREL16_HA, | |
1569 | 16, /* rightshift */ | |
1570 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1571 | 16, /* bitsize */ | |
1572 | FALSE, /* pc_relative */ | |
1573 | 0, /* bitpos */ | |
f9c6b907 | 1574 | complain_overflow_signed, /* complain_on_overflow */ |
411e1bfb AM |
1575 | ppc64_elf_unhandled_reloc, /* special_function */ |
1576 | "R_PPC64_TPREL16_HA", /* name */ | |
1577 | FALSE, /* partial_inplace */ | |
1578 | 0, /* src_mask */ | |
1579 | 0xffff, /* dst_mask */ | |
1580 | FALSE), /* pcrel_offset */ | |
1581 | ||
1582 | /* Like TPREL16_HI, but next higher group of 16 bits. */ | |
1583 | HOWTO (R_PPC64_TPREL16_HIGHER, | |
1584 | 32, /* rightshift */ | |
1585 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1586 | 16, /* bitsize */ | |
1587 | FALSE, /* pc_relative */ | |
1588 | 0, /* bitpos */ | |
1589 | complain_overflow_dont, /* complain_on_overflow */ | |
1590 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1591 | "R_PPC64_TPREL16_HIGHER", /* name */ | |
1592 | FALSE, /* partial_inplace */ | |
1593 | 0, /* src_mask */ | |
1594 | 0xffff, /* dst_mask */ | |
1595 | FALSE), /* pcrel_offset */ | |
1596 | ||
1597 | /* Like TPREL16_HIGHER, but adjust for low 16 bits. */ | |
1598 | HOWTO (R_PPC64_TPREL16_HIGHERA, | |
1599 | 32, /* rightshift */ | |
1600 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1601 | 16, /* bitsize */ | |
1602 | FALSE, /* pc_relative */ | |
1603 | 0, /* bitpos */ | |
1604 | complain_overflow_dont, /* complain_on_overflow */ | |
1605 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1606 | "R_PPC64_TPREL16_HIGHERA", /* name */ | |
1607 | FALSE, /* partial_inplace */ | |
1608 | 0, /* src_mask */ | |
1609 | 0xffff, /* dst_mask */ | |
1610 | FALSE), /* pcrel_offset */ | |
1611 | ||
1612 | /* Like TPREL16_HIGHER, but next higher group of 16 bits. */ | |
1613 | HOWTO (R_PPC64_TPREL16_HIGHEST, | |
1614 | 48, /* rightshift */ | |
1615 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1616 | 16, /* bitsize */ | |
1617 | FALSE, /* pc_relative */ | |
1618 | 0, /* bitpos */ | |
1619 | complain_overflow_dont, /* complain_on_overflow */ | |
1620 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1621 | "R_PPC64_TPREL16_HIGHEST", /* name */ | |
1622 | FALSE, /* partial_inplace */ | |
1623 | 0, /* src_mask */ | |
1624 | 0xffff, /* dst_mask */ | |
1625 | FALSE), /* pcrel_offset */ | |
1626 | ||
1627 | /* Like TPREL16_HIGHEST, but adjust for low 16 bits. */ | |
1628 | HOWTO (R_PPC64_TPREL16_HIGHESTA, | |
1629 | 48, /* rightshift */ | |
1630 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1631 | 16, /* bitsize */ | |
1632 | FALSE, /* pc_relative */ | |
1633 | 0, /* bitpos */ | |
1634 | complain_overflow_dont, /* complain_on_overflow */ | |
1635 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1636 | "R_PPC64_TPREL16_HIGHESTA", /* name */ | |
1637 | FALSE, /* partial_inplace */ | |
1638 | 0, /* src_mask */ | |
1639 | 0xffff, /* dst_mask */ | |
1640 | FALSE), /* pcrel_offset */ | |
1641 | ||
1642 | /* Like TPREL16, but for insns with a DS field. */ | |
1643 | HOWTO (R_PPC64_TPREL16_DS, | |
1644 | 0, /* rightshift */ | |
1645 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1646 | 16, /* bitsize */ | |
1647 | FALSE, /* pc_relative */ | |
1648 | 0, /* bitpos */ | |
1649 | complain_overflow_signed, /* complain_on_overflow */ | |
1650 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1651 | "R_PPC64_TPREL16_DS", /* name */ | |
1652 | FALSE, /* partial_inplace */ | |
1653 | 0, /* src_mask */ | |
1654 | 0xfffc, /* dst_mask */ | |
1655 | FALSE), /* pcrel_offset */ | |
1656 | ||
1657 | /* Like TPREL16_DS, but no overflow. */ | |
1658 | HOWTO (R_PPC64_TPREL16_LO_DS, | |
1659 | 0, /* rightshift */ | |
1660 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1661 | 16, /* bitsize */ | |
1662 | FALSE, /* pc_relative */ | |
1663 | 0, /* bitpos */ | |
1664 | complain_overflow_dont, /* complain_on_overflow */ | |
1665 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1666 | "R_PPC64_TPREL16_LO_DS", /* name */ | |
1667 | FALSE, /* partial_inplace */ | |
1668 | 0, /* src_mask */ | |
1669 | 0xfffc, /* dst_mask */ | |
1670 | FALSE), /* pcrel_offset */ | |
1671 | ||
1672 | /* Allocates two contiguous entries in the GOT to hold a tls_index structure, | |
1673 | with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset | |
1674 | to the first entry relative to the TOC base (r2). */ | |
1675 | HOWTO (R_PPC64_GOT_TLSGD16, | |
1676 | 0, /* rightshift */ | |
1677 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1678 | 16, /* bitsize */ | |
1679 | FALSE, /* pc_relative */ | |
1680 | 0, /* bitpos */ | |
1681 | complain_overflow_signed, /* complain_on_overflow */ | |
1682 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1683 | "R_PPC64_GOT_TLSGD16", /* name */ | |
b34976b6 | 1684 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1685 | 0, /* src_mask */ |
1686 | 0xffff, /* dst_mask */ | |
b34976b6 | 1687 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1688 | |
411e1bfb AM |
1689 | /* Like GOT_TLSGD16, but no overflow. */ |
1690 | HOWTO (R_PPC64_GOT_TLSGD16_LO, | |
5bd4f169 AM |
1691 | 0, /* rightshift */ |
1692 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1693 | 16, /* bitsize */ | |
b34976b6 | 1694 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1695 | 0, /* bitpos */ |
1696 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 1697 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1698 | "R_PPC64_GOT_TLSGD16_LO", /* name */ |
b34976b6 | 1699 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1700 | 0, /* src_mask */ |
1701 | 0xffff, /* dst_mask */ | |
b34976b6 | 1702 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1703 | |
411e1bfb AM |
1704 | /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */ |
1705 | HOWTO (R_PPC64_GOT_TLSGD16_HI, | |
5bd4f169 AM |
1706 | 16, /* rightshift */ |
1707 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1708 | 16, /* bitsize */ | |
b34976b6 | 1709 | FALSE, /* pc_relative */ |
5bd4f169 | 1710 | 0, /* bitpos */ |
f9c6b907 | 1711 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 1712 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1713 | "R_PPC64_GOT_TLSGD16_HI", /* name */ |
b34976b6 | 1714 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1715 | 0, /* src_mask */ |
1716 | 0xffff, /* dst_mask */ | |
b34976b6 | 1717 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1718 | |
411e1bfb AM |
1719 | /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */ |
1720 | HOWTO (R_PPC64_GOT_TLSGD16_HA, | |
5bd4f169 AM |
1721 | 16, /* rightshift */ |
1722 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1723 | 16, /* bitsize */ | |
b34976b6 | 1724 | FALSE, /* pc_relative */ |
5bd4f169 | 1725 | 0, /* bitpos */ |
f9c6b907 | 1726 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 1727 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1728 | "R_PPC64_GOT_TLSGD16_HA", /* name */ |
b34976b6 | 1729 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1730 | 0, /* src_mask */ |
1731 | 0xffff, /* dst_mask */ | |
b34976b6 | 1732 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1733 | |
411e1bfb AM |
1734 | /* Allocates two contiguous entries in the GOT to hold a tls_index structure, |
1735 | with values (sym+add)@dtpmod and zero, and computes the offset to the | |
1736 | first entry relative to the TOC base (r2). */ | |
1737 | HOWTO (R_PPC64_GOT_TLSLD16, | |
5bd4f169 AM |
1738 | 0, /* rightshift */ |
1739 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1740 | 16, /* bitsize */ | |
b34976b6 | 1741 | FALSE, /* pc_relative */ |
5bd4f169 | 1742 | 0, /* bitpos */ |
411e1bfb AM |
1743 | complain_overflow_signed, /* complain_on_overflow */ |
1744 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1745 | "R_PPC64_GOT_TLSLD16", /* name */ | |
b34976b6 | 1746 | FALSE, /* partial_inplace */ |
d006db6c | 1747 | 0, /* src_mask */ |
411e1bfb | 1748 | 0xffff, /* dst_mask */ |
b34976b6 | 1749 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1750 | |
411e1bfb AM |
1751 | /* Like GOT_TLSLD16, but no overflow. */ |
1752 | HOWTO (R_PPC64_GOT_TLSLD16_LO, | |
5bd4f169 AM |
1753 | 0, /* rightshift */ |
1754 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1755 | 16, /* bitsize */ | |
b34976b6 | 1756 | FALSE, /* pc_relative */ |
5bd4f169 | 1757 | 0, /* bitpos */ |
411e1bfb AM |
1758 | complain_overflow_dont, /* complain_on_overflow */ |
1759 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1760 | "R_PPC64_GOT_TLSLD16_LO", /* name */ | |
b34976b6 | 1761 | FALSE, /* partial_inplace */ |
d006db6c | 1762 | 0, /* src_mask */ |
411e1bfb | 1763 | 0xffff, /* dst_mask */ |
b34976b6 | 1764 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1765 | |
411e1bfb AM |
1766 | /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */ |
1767 | HOWTO (R_PPC64_GOT_TLSLD16_HI, | |
1768 | 16, /* rightshift */ | |
5bd4f169 AM |
1769 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1770 | 16, /* bitsize */ | |
b34976b6 | 1771 | FALSE, /* pc_relative */ |
5bd4f169 | 1772 | 0, /* bitpos */ |
f9c6b907 | 1773 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 1774 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1775 | "R_PPC64_GOT_TLSLD16_HI", /* name */ |
b34976b6 | 1776 | FALSE, /* partial_inplace */ |
d006db6c | 1777 | 0, /* src_mask */ |
411e1bfb | 1778 | 0xffff, /* dst_mask */ |
b34976b6 | 1779 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1780 | |
411e1bfb AM |
1781 | /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */ |
1782 | HOWTO (R_PPC64_GOT_TLSLD16_HA, | |
1783 | 16, /* rightshift */ | |
5bd4f169 AM |
1784 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1785 | 16, /* bitsize */ | |
b34976b6 | 1786 | FALSE, /* pc_relative */ |
5bd4f169 | 1787 | 0, /* bitpos */ |
f9c6b907 | 1788 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 1789 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1790 | "R_PPC64_GOT_TLSLD16_HA", /* name */ |
b34976b6 | 1791 | FALSE, /* partial_inplace */ |
d006db6c | 1792 | 0, /* src_mask */ |
411e1bfb | 1793 | 0xffff, /* dst_mask */ |
b34976b6 | 1794 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1795 | |
411e1bfb AM |
1796 | /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes |
1797 | the offset to the entry relative to the TOC base (r2). */ | |
1798 | HOWTO (R_PPC64_GOT_DTPREL16_DS, | |
5bd4f169 AM |
1799 | 0, /* rightshift */ |
1800 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1801 | 16, /* bitsize */ | |
b34976b6 | 1802 | FALSE, /* pc_relative */ |
5bd4f169 | 1803 | 0, /* bitpos */ |
411e1bfb | 1804 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 1805 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1806 | "R_PPC64_GOT_DTPREL16_DS", /* name */ |
b34976b6 | 1807 | FALSE, /* partial_inplace */ |
d006db6c | 1808 | 0, /* src_mask */ |
5bd4f169 | 1809 | 0xfffc, /* dst_mask */ |
b34976b6 | 1810 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1811 | |
411e1bfb AM |
1812 | /* Like GOT_DTPREL16_DS, but no overflow. */ |
1813 | HOWTO (R_PPC64_GOT_DTPREL16_LO_DS, | |
5bd4f169 | 1814 | 0, /* rightshift */ |
c061c2d8 AM |
1815 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1816 | 16, /* bitsize */ | |
b34976b6 | 1817 | FALSE, /* pc_relative */ |
5bd4f169 | 1818 | 0, /* bitpos */ |
411e1bfb AM |
1819 | complain_overflow_dont, /* complain_on_overflow */ |
1820 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1821 | "R_PPC64_GOT_DTPREL16_LO_DS", /* name */ | |
b34976b6 | 1822 | FALSE, /* partial_inplace */ |
d006db6c | 1823 | 0, /* src_mask */ |
c061c2d8 | 1824 | 0xfffc, /* dst_mask */ |
b34976b6 | 1825 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1826 | |
411e1bfb AM |
1827 | /* Like GOT_DTPREL16_LO_DS, but next higher group of 16 bits. */ |
1828 | HOWTO (R_PPC64_GOT_DTPREL16_HI, | |
1829 | 16, /* rightshift */ | |
5bd4f169 AM |
1830 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1831 | 16, /* bitsize */ | |
b34976b6 | 1832 | FALSE, /* pc_relative */ |
5bd4f169 | 1833 | 0, /* bitpos */ |
f9c6b907 | 1834 | complain_overflow_signed, /* complain_on_overflow */ |
411e1bfb AM |
1835 | ppc64_elf_unhandled_reloc, /* special_function */ |
1836 | "R_PPC64_GOT_DTPREL16_HI", /* name */ | |
b34976b6 | 1837 | FALSE, /* partial_inplace */ |
d006db6c | 1838 | 0, /* src_mask */ |
411e1bfb | 1839 | 0xffff, /* dst_mask */ |
b34976b6 | 1840 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1841 | |
411e1bfb AM |
1842 | /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */ |
1843 | HOWTO (R_PPC64_GOT_DTPREL16_HA, | |
1844 | 16, /* rightshift */ | |
1845 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1846 | 16, /* bitsize */ | |
1847 | FALSE, /* pc_relative */ | |
1848 | 0, /* bitpos */ | |
f9c6b907 | 1849 | complain_overflow_signed, /* complain_on_overflow */ |
411e1bfb AM |
1850 | ppc64_elf_unhandled_reloc, /* special_function */ |
1851 | "R_PPC64_GOT_DTPREL16_HA", /* name */ | |
1852 | FALSE, /* partial_inplace */ | |
1853 | 0, /* src_mask */ | |
1854 | 0xffff, /* dst_mask */ | |
1855 | FALSE), /* pcrel_offset */ | |
1856 | ||
1857 | /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the | |
1858 | offset to the entry relative to the TOC base (r2). */ | |
1859 | HOWTO (R_PPC64_GOT_TPREL16_DS, | |
5bd4f169 AM |
1860 | 0, /* rightshift */ |
1861 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1862 | 16, /* bitsize */ | |
b34976b6 | 1863 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1864 | 0, /* bitpos */ |
1865 | complain_overflow_signed, /* complain_on_overflow */ | |
411e1bfb AM |
1866 | ppc64_elf_unhandled_reloc, /* special_function */ |
1867 | "R_PPC64_GOT_TPREL16_DS", /* name */ | |
b34976b6 | 1868 | FALSE, /* partial_inplace */ |
d006db6c | 1869 | 0, /* src_mask */ |
ad8e1ba5 | 1870 | 0xfffc, /* dst_mask */ |
b34976b6 | 1871 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1872 | |
411e1bfb AM |
1873 | /* Like GOT_TPREL16_DS, but no overflow. */ |
1874 | HOWTO (R_PPC64_GOT_TPREL16_LO_DS, | |
5bd4f169 AM |
1875 | 0, /* rightshift */ |
1876 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1877 | 16, /* bitsize */ | |
b34976b6 | 1878 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1879 | 0, /* bitpos */ |
1880 | complain_overflow_dont, /* complain_on_overflow */ | |
411e1bfb AM |
1881 | ppc64_elf_unhandled_reloc, /* special_function */ |
1882 | "R_PPC64_GOT_TPREL16_LO_DS", /* name */ | |
b34976b6 | 1883 | FALSE, /* partial_inplace */ |
d006db6c | 1884 | 0, /* src_mask */ |
ad8e1ba5 | 1885 | 0xfffc, /* dst_mask */ |
b34976b6 | 1886 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1887 | |
411e1bfb AM |
1888 | /* Like GOT_TPREL16_LO_DS, but next higher group of 16 bits. */ |
1889 | HOWTO (R_PPC64_GOT_TPREL16_HI, | |
1890 | 16, /* rightshift */ | |
5bd4f169 AM |
1891 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1892 | 16, /* bitsize */ | |
b34976b6 | 1893 | FALSE, /* pc_relative */ |
5bd4f169 | 1894 | 0, /* bitpos */ |
f9c6b907 | 1895 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 1896 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1897 | "R_PPC64_GOT_TPREL16_HI", /* name */ |
b34976b6 | 1898 | FALSE, /* partial_inplace */ |
d006db6c | 1899 | 0, /* src_mask */ |
411e1bfb | 1900 | 0xffff, /* dst_mask */ |
b34976b6 | 1901 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1902 | |
411e1bfb AM |
1903 | /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */ |
1904 | HOWTO (R_PPC64_GOT_TPREL16_HA, | |
1905 | 16, /* rightshift */ | |
5bd4f169 AM |
1906 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1907 | 16, /* bitsize */ | |
b34976b6 | 1908 | FALSE, /* pc_relative */ |
5bd4f169 | 1909 | 0, /* bitpos */ |
f9c6b907 | 1910 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 1911 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1912 | "R_PPC64_GOT_TPREL16_HA", /* name */ |
b34976b6 | 1913 | FALSE, /* partial_inplace */ |
d006db6c | 1914 | 0, /* src_mask */ |
411e1bfb | 1915 | 0xffff, /* dst_mask */ |
b34976b6 | 1916 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1917 | |
25f23106 AM |
1918 | HOWTO (R_PPC64_JMP_IREL, /* type */ |
1919 | 0, /* rightshift */ | |
1920 | 0, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
1921 | 0, /* bitsize */ | |
1922 | FALSE, /* pc_relative */ | |
1923 | 0, /* bitpos */ | |
1924 | complain_overflow_dont, /* complain_on_overflow */ | |
1925 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1926 | "R_PPC64_JMP_IREL", /* name */ | |
1927 | FALSE, /* partial_inplace */ | |
1928 | 0, /* src_mask */ | |
1929 | 0, /* dst_mask */ | |
1930 | FALSE), /* pcrel_offset */ | |
1931 | ||
e054468f AM |
1932 | HOWTO (R_PPC64_IRELATIVE, /* type */ |
1933 | 0, /* rightshift */ | |
1934 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
1935 | 64, /* bitsize */ | |
1936 | FALSE, /* pc_relative */ | |
1937 | 0, /* bitpos */ | |
1938 | complain_overflow_dont, /* complain_on_overflow */ | |
1939 | bfd_elf_generic_reloc, /* special_function */ | |
1940 | "R_PPC64_IRELATIVE", /* name */ | |
1941 | FALSE, /* partial_inplace */ | |
1942 | 0, /* src_mask */ | |
1943 | ONES (64), /* dst_mask */ | |
1944 | FALSE), /* pcrel_offset */ | |
1945 | ||
25f23106 AM |
1946 | /* A 16 bit relative relocation. */ |
1947 | HOWTO (R_PPC64_REL16, /* type */ | |
1948 | 0, /* rightshift */ | |
1949 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1950 | 16, /* bitsize */ | |
1951 | TRUE, /* pc_relative */ | |
1952 | 0, /* bitpos */ | |
1953 | complain_overflow_bitfield, /* complain_on_overflow */ | |
1954 | bfd_elf_generic_reloc, /* special_function */ | |
1955 | "R_PPC64_REL16", /* name */ | |
1956 | FALSE, /* partial_inplace */ | |
1957 | 0, /* src_mask */ | |
1958 | 0xffff, /* dst_mask */ | |
1959 | TRUE), /* pcrel_offset */ | |
1960 | ||
1961 | /* A 16 bit relative relocation without overflow. */ | |
1962 | HOWTO (R_PPC64_REL16_LO, /* type */ | |
1963 | 0, /* rightshift */ | |
1964 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1965 | 16, /* bitsize */ | |
1966 | TRUE, /* pc_relative */ | |
1967 | 0, /* bitpos */ | |
1968 | complain_overflow_dont,/* complain_on_overflow */ | |
1969 | bfd_elf_generic_reloc, /* special_function */ | |
1970 | "R_PPC64_REL16_LO", /* name */ | |
1971 | FALSE, /* partial_inplace */ | |
1972 | 0, /* src_mask */ | |
1973 | 0xffff, /* dst_mask */ | |
1974 | TRUE), /* pcrel_offset */ | |
1975 | ||
1976 | /* The high order 16 bits of a relative address. */ | |
1977 | HOWTO (R_PPC64_REL16_HI, /* type */ | |
1978 | 16, /* rightshift */ | |
1979 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1980 | 16, /* bitsize */ | |
1981 | TRUE, /* pc_relative */ | |
1982 | 0, /* bitpos */ | |
f9c6b907 | 1983 | complain_overflow_signed, /* complain_on_overflow */ |
25f23106 AM |
1984 | bfd_elf_generic_reloc, /* special_function */ |
1985 | "R_PPC64_REL16_HI", /* name */ | |
1986 | FALSE, /* partial_inplace */ | |
1987 | 0, /* src_mask */ | |
1988 | 0xffff, /* dst_mask */ | |
1989 | TRUE), /* pcrel_offset */ | |
1990 | ||
1991 | /* The high order 16 bits of a relative address, plus 1 if the contents of | |
1992 | the low 16 bits, treated as a signed number, is negative. */ | |
1993 | HOWTO (R_PPC64_REL16_HA, /* type */ | |
1994 | 16, /* rightshift */ | |
1995 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1996 | 16, /* bitsize */ | |
1997 | TRUE, /* pc_relative */ | |
1998 | 0, /* bitpos */ | |
f9c6b907 | 1999 | complain_overflow_signed, /* complain_on_overflow */ |
25f23106 AM |
2000 | ppc64_elf_ha_reloc, /* special_function */ |
2001 | "R_PPC64_REL16_HA", /* name */ | |
2002 | FALSE, /* partial_inplace */ | |
2003 | 0, /* src_mask */ | |
2004 | 0xffff, /* dst_mask */ | |
2005 | TRUE), /* pcrel_offset */ | |
2006 | ||
f9c6b907 AM |
2007 | /* Like R_PPC64_ADDR16_HI, but no overflow. */ |
2008 | HOWTO (R_PPC64_ADDR16_HIGH, /* type */ | |
2009 | 16, /* rightshift */ | |
2010 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
2011 | 16, /* bitsize */ | |
2012 | FALSE, /* pc_relative */ | |
2013 | 0, /* bitpos */ | |
2014 | complain_overflow_dont, /* complain_on_overflow */ | |
2015 | bfd_elf_generic_reloc, /* special_function */ | |
2016 | "R_PPC64_ADDR16_HIGH", /* name */ | |
2017 | FALSE, /* partial_inplace */ | |
2018 | 0, /* src_mask */ | |
2019 | 0xffff, /* dst_mask */ | |
2020 | FALSE), /* pcrel_offset */ | |
2021 | ||
2022 | /* Like R_PPC64_ADDR16_HA, but no overflow. */ | |
2023 | HOWTO (R_PPC64_ADDR16_HIGHA, /* type */ | |
2024 | 16, /* rightshift */ | |
2025 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
2026 | 16, /* bitsize */ | |
2027 | FALSE, /* pc_relative */ | |
2028 | 0, /* bitpos */ | |
2029 | complain_overflow_dont, /* complain_on_overflow */ | |
2030 | ppc64_elf_ha_reloc, /* special_function */ | |
2031 | "R_PPC64_ADDR16_HIGHA", /* name */ | |
2032 | FALSE, /* partial_inplace */ | |
2033 | 0, /* src_mask */ | |
2034 | 0xffff, /* dst_mask */ | |
2035 | FALSE), /* pcrel_offset */ | |
2036 | ||
2037 | /* Like R_PPC64_DTPREL16_HI, but no overflow. */ | |
2038 | HOWTO (R_PPC64_DTPREL16_HIGH, | |
2039 | 16, /* rightshift */ | |
2040 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
2041 | 16, /* bitsize */ | |
2042 | FALSE, /* pc_relative */ | |
2043 | 0, /* bitpos */ | |
2044 | complain_overflow_dont, /* complain_on_overflow */ | |
2045 | ppc64_elf_unhandled_reloc, /* special_function */ | |
2046 | "R_PPC64_DTPREL16_HIGH", /* name */ | |
2047 | FALSE, /* partial_inplace */ | |
2048 | 0, /* src_mask */ | |
2049 | 0xffff, /* dst_mask */ | |
2050 | FALSE), /* pcrel_offset */ | |
2051 | ||
2052 | /* Like R_PPC64_DTPREL16_HA, but no overflow. */ | |
2053 | HOWTO (R_PPC64_DTPREL16_HIGHA, | |
2054 | 16, /* rightshift */ | |
2055 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
2056 | 16, /* bitsize */ | |
2057 | FALSE, /* pc_relative */ | |
2058 | 0, /* bitpos */ | |
2059 | complain_overflow_dont, /* complain_on_overflow */ | |
2060 | ppc64_elf_unhandled_reloc, /* special_function */ | |
2061 | "R_PPC64_DTPREL16_HIGHA", /* name */ | |
2062 | FALSE, /* partial_inplace */ | |
2063 | 0, /* src_mask */ | |
2064 | 0xffff, /* dst_mask */ | |
2065 | FALSE), /* pcrel_offset */ | |
2066 | ||
2067 | /* Like R_PPC64_TPREL16_HI, but no overflow. */ | |
2068 | HOWTO (R_PPC64_TPREL16_HIGH, | |
2069 | 16, /* rightshift */ | |
2070 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
2071 | 16, /* bitsize */ | |
2072 | FALSE, /* pc_relative */ | |
2073 | 0, /* bitpos */ | |
2074 | complain_overflow_dont, /* complain_on_overflow */ | |
2075 | ppc64_elf_unhandled_reloc, /* special_function */ | |
2076 | "R_PPC64_TPREL16_HIGH", /* name */ | |
2077 | FALSE, /* partial_inplace */ | |
2078 | 0, /* src_mask */ | |
2079 | 0xffff, /* dst_mask */ | |
2080 | FALSE), /* pcrel_offset */ | |
2081 | ||
2082 | /* Like R_PPC64_TPREL16_HA, but no overflow. */ | |
2083 | HOWTO (R_PPC64_TPREL16_HIGHA, | |
2084 | 16, /* rightshift */ | |
2085 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
2086 | 16, /* bitsize */ | |
2087 | FALSE, /* pc_relative */ | |
2088 | 0, /* bitpos */ | |
2089 | complain_overflow_dont, /* complain_on_overflow */ | |
2090 | ppc64_elf_unhandled_reloc, /* special_function */ | |
2091 | "R_PPC64_TPREL16_HIGHA", /* name */ | |
2092 | FALSE, /* partial_inplace */ | |
2093 | 0, /* src_mask */ | |
2094 | 0xffff, /* dst_mask */ | |
2095 | FALSE), /* pcrel_offset */ | |
2096 | ||
45965137 AM |
2097 | /* Like ADDR64, but use local entry point of function. */ |
2098 | HOWTO (R_PPC64_ADDR64_LOCAL, /* type */ | |
2099 | 0, /* rightshift */ | |
2100 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
2101 | 64, /* bitsize */ | |
2102 | FALSE, /* pc_relative */ | |
2103 | 0, /* bitpos */ | |
2104 | complain_overflow_dont, /* complain_on_overflow */ | |
2105 | bfd_elf_generic_reloc, /* special_function */ | |
2106 | "R_PPC64_ADDR64_LOCAL", /* name */ | |
2107 | FALSE, /* partial_inplace */ | |
2108 | 0, /* src_mask */ | |
2109 | ONES (64), /* dst_mask */ | |
2110 | FALSE), /* pcrel_offset */ | |
2111 | ||
5bd4f169 AM |
2112 | /* GNU extension to record C++ vtable hierarchy. */ |
2113 | HOWTO (R_PPC64_GNU_VTINHERIT, /* type */ | |
2114 | 0, /* rightshift */ | |
2115 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
2116 | 0, /* bitsize */ | |
b34976b6 | 2117 | FALSE, /* pc_relative */ |
5bd4f169 AM |
2118 | 0, /* bitpos */ |
2119 | complain_overflow_dont, /* complain_on_overflow */ | |
2120 | NULL, /* special_function */ | |
2121 | "R_PPC64_GNU_VTINHERIT", /* name */ | |
b34976b6 | 2122 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
2123 | 0, /* src_mask */ |
2124 | 0, /* dst_mask */ | |
b34976b6 | 2125 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
2126 | |
2127 | /* GNU extension to record C++ vtable member usage. */ | |
2128 | HOWTO (R_PPC64_GNU_VTENTRY, /* type */ | |
2129 | 0, /* rightshift */ | |
2130 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
2131 | 0, /* bitsize */ | |
b34976b6 | 2132 | FALSE, /* pc_relative */ |
5bd4f169 AM |
2133 | 0, /* bitpos */ |
2134 | complain_overflow_dont, /* complain_on_overflow */ | |
2135 | NULL, /* special_function */ | |
2136 | "R_PPC64_GNU_VTENTRY", /* name */ | |
b34976b6 | 2137 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
2138 | 0, /* src_mask */ |
2139 | 0, /* dst_mask */ | |
b34976b6 | 2140 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
2141 | }; |
2142 | ||
2143 | \f | |
2144 | /* Initialize the ppc64_elf_howto_table, so that linear accesses can | |
2145 | be done. */ | |
2146 | ||
2147 | static void | |
4ce794b7 | 2148 | ppc_howto_init (void) |
5bd4f169 AM |
2149 | { |
2150 | unsigned int i, type; | |
2151 | ||
2152 | for (i = 0; | |
2153 | i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]); | |
2154 | i++) | |
2155 | { | |
2156 | type = ppc64_elf_howto_raw[i].type; | |
2157 | BFD_ASSERT (type < (sizeof (ppc64_elf_howto_table) | |
2158 | / sizeof (ppc64_elf_howto_table[0]))); | |
2159 | ppc64_elf_howto_table[type] = &ppc64_elf_howto_raw[i]; | |
2160 | } | |
2161 | } | |
2162 | ||
2163 | static reloc_howto_type * | |
4ce794b7 AM |
2164 | ppc64_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, |
2165 | bfd_reloc_code_real_type code) | |
5bd4f169 | 2166 | { |
411e1bfb | 2167 | enum elf_ppc64_reloc_type r = R_PPC64_NONE; |
5bd4f169 AM |
2168 | |
2169 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) | |
2170 | /* Initialize howto table if needed. */ | |
2171 | ppc_howto_init (); | |
2172 | ||
4ce794b7 | 2173 | switch (code) |
5bd4f169 AM |
2174 | { |
2175 | default: | |
4ce794b7 | 2176 | return NULL; |
5bd4f169 | 2177 | |
411e1bfb AM |
2178 | case BFD_RELOC_NONE: r = R_PPC64_NONE; |
2179 | break; | |
2180 | case BFD_RELOC_32: r = R_PPC64_ADDR32; | |
2181 | break; | |
2182 | case BFD_RELOC_PPC_BA26: r = R_PPC64_ADDR24; | |
2183 | break; | |
2184 | case BFD_RELOC_16: r = R_PPC64_ADDR16; | |
2185 | break; | |
2186 | case BFD_RELOC_LO16: r = R_PPC64_ADDR16_LO; | |
2187 | break; | |
2188 | case BFD_RELOC_HI16: r = R_PPC64_ADDR16_HI; | |
2189 | break; | |
f9c6b907 AM |
2190 | case BFD_RELOC_PPC64_ADDR16_HIGH: r = R_PPC64_ADDR16_HIGH; |
2191 | break; | |
411e1bfb | 2192 | case BFD_RELOC_HI16_S: r = R_PPC64_ADDR16_HA; |
5bd4f169 | 2193 | break; |
f9c6b907 AM |
2194 | case BFD_RELOC_PPC64_ADDR16_HIGHA: r = R_PPC64_ADDR16_HIGHA; |
2195 | break; | |
411e1bfb | 2196 | case BFD_RELOC_PPC_BA16: r = R_PPC64_ADDR14; |
5bd4f169 | 2197 | break; |
411e1bfb | 2198 | case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC64_ADDR14_BRTAKEN; |
5bd4f169 | 2199 | break; |
411e1bfb | 2200 | case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC64_ADDR14_BRNTAKEN; |
5bd4f169 | 2201 | break; |
411e1bfb | 2202 | case BFD_RELOC_PPC_B26: r = R_PPC64_REL24; |
5bd4f169 | 2203 | break; |
411e1bfb | 2204 | case BFD_RELOC_PPC_B16: r = R_PPC64_REL14; |
5bd4f169 | 2205 | break; |
411e1bfb | 2206 | case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC64_REL14_BRTAKEN; |
5bd4f169 | 2207 | break; |
411e1bfb | 2208 | case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC64_REL14_BRNTAKEN; |
5bd4f169 | 2209 | break; |
411e1bfb | 2210 | case BFD_RELOC_16_GOTOFF: r = R_PPC64_GOT16; |
5bd4f169 | 2211 | break; |
411e1bfb | 2212 | case BFD_RELOC_LO16_GOTOFF: r = R_PPC64_GOT16_LO; |
5bd4f169 | 2213 | break; |
411e1bfb | 2214 | case BFD_RELOC_HI16_GOTOFF: r = R_PPC64_GOT16_HI; |
5bd4f169 | 2215 | break; |
411e1bfb | 2216 | case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC64_GOT16_HA; |
5bd4f169 | 2217 | break; |
411e1bfb | 2218 | case BFD_RELOC_PPC_COPY: r = R_PPC64_COPY; |
5bd4f169 | 2219 | break; |
411e1bfb | 2220 | case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC64_GLOB_DAT; |
5bd4f169 | 2221 | break; |
411e1bfb | 2222 | case BFD_RELOC_32_PCREL: r = R_PPC64_REL32; |
5bd4f169 | 2223 | break; |
411e1bfb | 2224 | case BFD_RELOC_32_PLTOFF: r = R_PPC64_PLT32; |
5bd4f169 | 2225 | break; |
411e1bfb | 2226 | case BFD_RELOC_32_PLT_PCREL: r = R_PPC64_PLTREL32; |
5bd4f169 | 2227 | break; |
411e1bfb | 2228 | case BFD_RELOC_LO16_PLTOFF: r = R_PPC64_PLT16_LO; |
5bd4f169 | 2229 | break; |
411e1bfb | 2230 | case BFD_RELOC_HI16_PLTOFF: r = R_PPC64_PLT16_HI; |
5bd4f169 | 2231 | break; |
411e1bfb | 2232 | case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC64_PLT16_HA; |
5bd4f169 | 2233 | break; |
411e1bfb | 2234 | case BFD_RELOC_16_BASEREL: r = R_PPC64_SECTOFF; |
5bd4f169 | 2235 | break; |
411e1bfb | 2236 | case BFD_RELOC_LO16_BASEREL: r = R_PPC64_SECTOFF_LO; |
5bd4f169 | 2237 | break; |
411e1bfb | 2238 | case BFD_RELOC_HI16_BASEREL: r = R_PPC64_SECTOFF_HI; |
5bd4f169 | 2239 | break; |
411e1bfb | 2240 | case BFD_RELOC_HI16_S_BASEREL: r = R_PPC64_SECTOFF_HA; |
5bd4f169 | 2241 | break; |
411e1bfb | 2242 | case BFD_RELOC_CTOR: r = R_PPC64_ADDR64; |
5bd4f169 | 2243 | break; |
411e1bfb | 2244 | case BFD_RELOC_64: r = R_PPC64_ADDR64; |
5bd4f169 | 2245 | break; |
411e1bfb | 2246 | case BFD_RELOC_PPC64_HIGHER: r = R_PPC64_ADDR16_HIGHER; |
5bd4f169 | 2247 | break; |
411e1bfb | 2248 | case BFD_RELOC_PPC64_HIGHER_S: r = R_PPC64_ADDR16_HIGHERA; |
5bd4f169 | 2249 | break; |
411e1bfb | 2250 | case BFD_RELOC_PPC64_HIGHEST: r = R_PPC64_ADDR16_HIGHEST; |
5bd4f169 | 2251 | break; |
411e1bfb | 2252 | case BFD_RELOC_PPC64_HIGHEST_S: r = R_PPC64_ADDR16_HIGHESTA; |
5bd4f169 | 2253 | break; |
411e1bfb | 2254 | case BFD_RELOC_64_PCREL: r = R_PPC64_REL64; |
5bd4f169 | 2255 | break; |
411e1bfb | 2256 | case BFD_RELOC_64_PLTOFF: r = R_PPC64_PLT64; |
5bd4f169 | 2257 | break; |
411e1bfb | 2258 | case BFD_RELOC_64_PLT_PCREL: r = R_PPC64_PLTREL64; |
5bd4f169 | 2259 | break; |
411e1bfb | 2260 | case BFD_RELOC_PPC_TOC16: r = R_PPC64_TOC16; |
5bd4f169 | 2261 | break; |
411e1bfb | 2262 | case BFD_RELOC_PPC64_TOC16_LO: r = R_PPC64_TOC16_LO; |
5bd4f169 | 2263 | break; |
411e1bfb | 2264 | case BFD_RELOC_PPC64_TOC16_HI: r = R_PPC64_TOC16_HI; |
5bd4f169 | 2265 | break; |
411e1bfb | 2266 | case BFD_RELOC_PPC64_TOC16_HA: r = R_PPC64_TOC16_HA; |
5bd4f169 | 2267 | break; |
411e1bfb | 2268 | case BFD_RELOC_PPC64_TOC: r = R_PPC64_TOC; |
5bd4f169 | 2269 | break; |
411e1bfb | 2270 | case BFD_RELOC_PPC64_PLTGOT16: r = R_PPC64_PLTGOT16; |
5bd4f169 | 2271 | break; |
411e1bfb | 2272 | case BFD_RELOC_PPC64_PLTGOT16_LO: r = R_PPC64_PLTGOT16_LO; |
5bd4f169 | 2273 | break; |
411e1bfb | 2274 | case BFD_RELOC_PPC64_PLTGOT16_HI: r = R_PPC64_PLTGOT16_HI; |
5bd4f169 | 2275 | break; |
411e1bfb | 2276 | case BFD_RELOC_PPC64_PLTGOT16_HA: r = R_PPC64_PLTGOT16_HA; |
5bd4f169 | 2277 | break; |
411e1bfb | 2278 | case BFD_RELOC_PPC64_ADDR16_DS: r = R_PPC64_ADDR16_DS; |
5bd4f169 | 2279 | break; |
411e1bfb | 2280 | case BFD_RELOC_PPC64_ADDR16_LO_DS: r = R_PPC64_ADDR16_LO_DS; |
5bd4f169 | 2281 | break; |
411e1bfb | 2282 | case BFD_RELOC_PPC64_GOT16_DS: r = R_PPC64_GOT16_DS; |
5bd4f169 | 2283 | break; |
411e1bfb | 2284 | case BFD_RELOC_PPC64_GOT16_LO_DS: r = R_PPC64_GOT16_LO_DS; |
5bd4f169 | 2285 | break; |
411e1bfb | 2286 | case BFD_RELOC_PPC64_PLT16_LO_DS: r = R_PPC64_PLT16_LO_DS; |
5bd4f169 | 2287 | break; |
411e1bfb | 2288 | case BFD_RELOC_PPC64_SECTOFF_DS: r = R_PPC64_SECTOFF_DS; |
5bd4f169 | 2289 | break; |
411e1bfb | 2290 | case BFD_RELOC_PPC64_SECTOFF_LO_DS: r = R_PPC64_SECTOFF_LO_DS; |
5bd4f169 | 2291 | break; |
411e1bfb | 2292 | case BFD_RELOC_PPC64_TOC16_DS: r = R_PPC64_TOC16_DS; |
5bd4f169 | 2293 | break; |
411e1bfb | 2294 | case BFD_RELOC_PPC64_TOC16_LO_DS: r = R_PPC64_TOC16_LO_DS; |
5bd4f169 | 2295 | break; |
411e1bfb | 2296 | case BFD_RELOC_PPC64_PLTGOT16_DS: r = R_PPC64_PLTGOT16_DS; |
5bd4f169 | 2297 | break; |
411e1bfb | 2298 | case BFD_RELOC_PPC64_PLTGOT16_LO_DS: r = R_PPC64_PLTGOT16_LO_DS; |
5bd4f169 | 2299 | break; |
411e1bfb | 2300 | case BFD_RELOC_PPC_TLS: r = R_PPC64_TLS; |
5bd4f169 | 2301 | break; |
727fc41e AM |
2302 | case BFD_RELOC_PPC_TLSGD: r = R_PPC64_TLSGD; |
2303 | break; | |
2304 | case BFD_RELOC_PPC_TLSLD: r = R_PPC64_TLSLD; | |
2305 | break; | |
411e1bfb | 2306 | case BFD_RELOC_PPC_DTPMOD: r = R_PPC64_DTPMOD64; |
5bd4f169 | 2307 | break; |
411e1bfb | 2308 | case BFD_RELOC_PPC_TPREL16: r = R_PPC64_TPREL16; |
5bd4f169 | 2309 | break; |
411e1bfb | 2310 | case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC64_TPREL16_LO; |
5bd4f169 | 2311 | break; |
411e1bfb | 2312 | case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC64_TPREL16_HI; |
5bd4f169 | 2313 | break; |
f9c6b907 AM |
2314 | case BFD_RELOC_PPC64_TPREL16_HIGH: r = R_PPC64_TPREL16_HIGH; |
2315 | break; | |
411e1bfb | 2316 | case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC64_TPREL16_HA; |
5bd4f169 | 2317 | break; |
f9c6b907 AM |
2318 | case BFD_RELOC_PPC64_TPREL16_HIGHA: r = R_PPC64_TPREL16_HIGHA; |
2319 | break; | |
411e1bfb | 2320 | case BFD_RELOC_PPC_TPREL: r = R_PPC64_TPREL64; |
5bd4f169 | 2321 | break; |
411e1bfb AM |
2322 | case BFD_RELOC_PPC_DTPREL16: r = R_PPC64_DTPREL16; |
2323 | break; | |
2324 | case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC64_DTPREL16_LO; | |
2325 | break; | |
2326 | case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC64_DTPREL16_HI; | |
2327 | break; | |
f9c6b907 AM |
2328 | case BFD_RELOC_PPC64_DTPREL16_HIGH: r = R_PPC64_DTPREL16_HIGH; |
2329 | break; | |
411e1bfb AM |
2330 | case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC64_DTPREL16_HA; |
2331 | break; | |
f9c6b907 AM |
2332 | case BFD_RELOC_PPC64_DTPREL16_HIGHA: r = R_PPC64_DTPREL16_HIGHA; |
2333 | break; | |
411e1bfb AM |
2334 | case BFD_RELOC_PPC_DTPREL: r = R_PPC64_DTPREL64; |
2335 | break; | |
2336 | case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC64_GOT_TLSGD16; | |
2337 | break; | |
2338 | case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC64_GOT_TLSGD16_LO; | |
2339 | break; | |
2340 | case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC64_GOT_TLSGD16_HI; | |
2341 | break; | |
2342 | case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC64_GOT_TLSGD16_HA; | |
2343 | break; | |
2344 | case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC64_GOT_TLSLD16; | |
2345 | break; | |
2346 | case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC64_GOT_TLSLD16_LO; | |
2347 | break; | |
2348 | case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC64_GOT_TLSLD16_HI; | |
2349 | break; | |
2350 | case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC64_GOT_TLSLD16_HA; | |
2351 | break; | |
2352 | case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC64_GOT_TPREL16_DS; | |
2353 | break; | |
2354 | case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC64_GOT_TPREL16_LO_DS; | |
2355 | break; | |
2356 | case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC64_GOT_TPREL16_HI; | |
2357 | break; | |
2358 | case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC64_GOT_TPREL16_HA; | |
2359 | break; | |
2360 | case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC64_GOT_DTPREL16_DS; | |
2361 | break; | |
2362 | case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC64_GOT_DTPREL16_LO_DS; | |
2363 | break; | |
2364 | case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC64_GOT_DTPREL16_HI; | |
2365 | break; | |
2366 | case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC64_GOT_DTPREL16_HA; | |
2367 | break; | |
2368 | case BFD_RELOC_PPC64_TPREL16_DS: r = R_PPC64_TPREL16_DS; | |
2369 | break; | |
2370 | case BFD_RELOC_PPC64_TPREL16_LO_DS: r = R_PPC64_TPREL16_LO_DS; | |
2371 | break; | |
2372 | case BFD_RELOC_PPC64_TPREL16_HIGHER: r = R_PPC64_TPREL16_HIGHER; | |
2373 | break; | |
2374 | case BFD_RELOC_PPC64_TPREL16_HIGHERA: r = R_PPC64_TPREL16_HIGHERA; | |
2375 | break; | |
2376 | case BFD_RELOC_PPC64_TPREL16_HIGHEST: r = R_PPC64_TPREL16_HIGHEST; | |
2377 | break; | |
2378 | case BFD_RELOC_PPC64_TPREL16_HIGHESTA: r = R_PPC64_TPREL16_HIGHESTA; | |
2379 | break; | |
2380 | case BFD_RELOC_PPC64_DTPREL16_DS: r = R_PPC64_DTPREL16_DS; | |
2381 | break; | |
2382 | case BFD_RELOC_PPC64_DTPREL16_LO_DS: r = R_PPC64_DTPREL16_LO_DS; | |
2383 | break; | |
2384 | case BFD_RELOC_PPC64_DTPREL16_HIGHER: r = R_PPC64_DTPREL16_HIGHER; | |
2385 | break; | |
2386 | case BFD_RELOC_PPC64_DTPREL16_HIGHERA: r = R_PPC64_DTPREL16_HIGHERA; | |
2387 | break; | |
2388 | case BFD_RELOC_PPC64_DTPREL16_HIGHEST: r = R_PPC64_DTPREL16_HIGHEST; | |
2389 | break; | |
2390 | case BFD_RELOC_PPC64_DTPREL16_HIGHESTA: r = R_PPC64_DTPREL16_HIGHESTA; | |
2391 | break; | |
25f23106 AM |
2392 | case BFD_RELOC_16_PCREL: r = R_PPC64_REL16; |
2393 | break; | |
2394 | case BFD_RELOC_LO16_PCREL: r = R_PPC64_REL16_LO; | |
2395 | break; | |
2396 | case BFD_RELOC_HI16_PCREL: r = R_PPC64_REL16_HI; | |
2397 | break; | |
2398 | case BFD_RELOC_HI16_S_PCREL: r = R_PPC64_REL16_HA; | |
2399 | break; | |
45965137 AM |
2400 | case BFD_RELOC_PPC64_ADDR64_LOCAL: r = R_PPC64_ADDR64_LOCAL; |
2401 | break; | |
411e1bfb AM |
2402 | case BFD_RELOC_VTABLE_INHERIT: r = R_PPC64_GNU_VTINHERIT; |
2403 | break; | |
2404 | case BFD_RELOC_VTABLE_ENTRY: r = R_PPC64_GNU_VTENTRY; | |
5bd4f169 AM |
2405 | break; |
2406 | } | |
2407 | ||
4ce794b7 | 2408 | return ppc64_elf_howto_table[r]; |
5bd4f169 AM |
2409 | }; |
2410 | ||
157090f7 AM |
2411 | static reloc_howto_type * |
2412 | ppc64_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, | |
2413 | const char *r_name) | |
2414 | { | |
2415 | unsigned int i; | |
2416 | ||
2417 | for (i = 0; | |
2418 | i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]); | |
2419 | i++) | |
2420 | if (ppc64_elf_howto_raw[i].name != NULL | |
2421 | && strcasecmp (ppc64_elf_howto_raw[i].name, r_name) == 0) | |
2422 | return &ppc64_elf_howto_raw[i]; | |
2423 | ||
2424 | return NULL; | |
2425 | } | |
2426 | ||
5bd4f169 AM |
2427 | /* Set the howto pointer for a PowerPC ELF reloc. */ |
2428 | ||
2429 | static void | |
4ce794b7 AM |
2430 | ppc64_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr, |
2431 | Elf_Internal_Rela *dst) | |
5bd4f169 | 2432 | { |
65f38f15 AM |
2433 | unsigned int type; |
2434 | ||
ef60b7ff | 2435 | /* Initialize howto table if needed. */ |
5bd4f169 | 2436 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) |
5bd4f169 AM |
2437 | ppc_howto_init (); |
2438 | ||
65f38f15 | 2439 | type = ELF64_R_TYPE (dst->r_info); |
d0fb9a8d JJ |
2440 | if (type >= (sizeof (ppc64_elf_howto_table) |
2441 | / sizeof (ppc64_elf_howto_table[0]))) | |
2442 | { | |
2443 | (*_bfd_error_handler) (_("%B: invalid relocation type %d"), | |
3ec2b351 NC |
2444 | abfd, (int) type); |
2445 | type = R_PPC64_NONE; | |
d0fb9a8d | 2446 | } |
65f38f15 | 2447 | cache_ptr->howto = ppc64_elf_howto_table[type]; |
5bd4f169 AM |
2448 | } |
2449 | ||
04c9666a | 2450 | /* Handle the R_PPC64_ADDR16_HA and similar relocs. */ |
5bd4f169 AM |
2451 | |
2452 | static bfd_reloc_status_type | |
4ce794b7 AM |
2453 | ppc64_elf_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2454 | void *data, asection *input_section, | |
2455 | bfd *output_bfd, char **error_message) | |
5bd4f169 | 2456 | { |
805fc799 AM |
2457 | /* If this is a relocatable link (output_bfd test tells us), just |
2458 | call the generic function. Any adjustment will be done at final | |
2459 | link time. */ | |
2460 | if (output_bfd != NULL) | |
cedb70c5 | 2461 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2462 | input_section, output_bfd, error_message); |
2463 | ||
2464 | /* Adjust the addend for sign extension of the low 16 bits. | |
2465 | We won't actually be using the low 16 bits, so trashing them | |
2466 | doesn't matter. */ | |
2467 | reloc_entry->addend += 0x8000; | |
2468 | return bfd_reloc_continue; | |
2469 | } | |
5bd4f169 | 2470 | |
2441e016 AM |
2471 | static bfd_reloc_status_type |
2472 | ppc64_elf_branch_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, | |
2473 | void *data, asection *input_section, | |
2474 | bfd *output_bfd, char **error_message) | |
2475 | { | |
2476 | if (output_bfd != NULL) | |
2477 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, | |
2478 | input_section, output_bfd, error_message); | |
2479 | ||
699733f6 AM |
2480 | if (strcmp (symbol->section->name, ".opd") == 0 |
2481 | && (symbol->section->owner->flags & DYNAMIC) == 0) | |
2441e016 AM |
2482 | { |
2483 | bfd_vma dest = opd_entry_value (symbol->section, | |
2484 | symbol->value + reloc_entry->addend, | |
aef36ac1 | 2485 | NULL, NULL, FALSE); |
2441e016 AM |
2486 | if (dest != (bfd_vma) -1) |
2487 | reloc_entry->addend = dest - (symbol->value | |
2488 | + symbol->section->output_section->vma | |
2489 | + symbol->section->output_offset); | |
2490 | } | |
2491 | return bfd_reloc_continue; | |
2492 | } | |
2493 | ||
805fc799 | 2494 | static bfd_reloc_status_type |
4ce794b7 AM |
2495 | ppc64_elf_brtaken_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2496 | void *data, asection *input_section, | |
2497 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2498 | { |
2499 | long insn; | |
04c9666a | 2500 | enum elf_ppc64_reloc_type r_type; |
805fc799 | 2501 | bfd_size_type octets; |
794e51c0 AM |
2502 | /* Assume 'at' branch hints. */ |
2503 | bfd_boolean is_isa_v2 = TRUE; | |
805fc799 AM |
2504 | |
2505 | /* If this is a relocatable link (output_bfd test tells us), just | |
2506 | call the generic function. Any adjustment will be done at final | |
2507 | link time. */ | |
5bd4f169 | 2508 | if (output_bfd != NULL) |
cedb70c5 | 2509 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2510 | input_section, output_bfd, error_message); |
2511 | ||
2512 | octets = reloc_entry->address * bfd_octets_per_byte (abfd); | |
2513 | insn = bfd_get_32 (abfd, (bfd_byte *) data + octets); | |
2514 | insn &= ~(0x01 << 21); | |
4ce794b7 | 2515 | r_type = reloc_entry->howto->type; |
805fc799 AM |
2516 | if (r_type == R_PPC64_ADDR14_BRTAKEN |
2517 | || r_type == R_PPC64_REL14_BRTAKEN) | |
cedb70c5 | 2518 | insn |= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */ |
805fc799 | 2519 | |
794e51c0 | 2520 | if (is_isa_v2) |
5bd4f169 | 2521 | { |
805fc799 AM |
2522 | /* Set 'a' bit. This is 0b00010 in BO field for branch |
2523 | on CR(BI) insns (BO == 001at or 011at), and 0b01000 | |
2524 | for branch on CTR insns (BO == 1a00t or 1a01t). */ | |
2525 | if ((insn & (0x14 << 21)) == (0x04 << 21)) | |
2526 | insn |= 0x02 << 21; | |
2527 | else if ((insn & (0x14 << 21)) == (0x10 << 21)) | |
2528 | insn |= 0x08 << 21; | |
2529 | else | |
2441e016 | 2530 | goto out; |
5bd4f169 | 2531 | } |
805fc799 AM |
2532 | else |
2533 | { | |
2534 | bfd_vma target = 0; | |
2535 | bfd_vma from; | |
5bd4f169 | 2536 | |
805fc799 AM |
2537 | if (!bfd_is_com_section (symbol->section)) |
2538 | target = symbol->value; | |
2539 | target += symbol->section->output_section->vma; | |
2540 | target += symbol->section->output_offset; | |
2541 | target += reloc_entry->addend; | |
5bd4f169 | 2542 | |
805fc799 AM |
2543 | from = (reloc_entry->address |
2544 | + input_section->output_offset | |
2545 | + input_section->output_section->vma); | |
5bd4f169 | 2546 | |
805fc799 AM |
2547 | /* Invert 'y' bit if not the default. */ |
2548 | if ((bfd_signed_vma) (target - from) < 0) | |
2549 | insn ^= 0x01 << 21; | |
2550 | } | |
4ce794b7 | 2551 | bfd_put_32 (abfd, insn, (bfd_byte *) data + octets); |
2441e016 AM |
2552 | out: |
2553 | return ppc64_elf_branch_reloc (abfd, reloc_entry, symbol, data, | |
2554 | input_section, output_bfd, error_message); | |
805fc799 | 2555 | } |
5bd4f169 | 2556 | |
805fc799 | 2557 | static bfd_reloc_status_type |
4ce794b7 AM |
2558 | ppc64_elf_sectoff_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2559 | void *data, asection *input_section, | |
2560 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2561 | { |
2562 | /* If this is a relocatable link (output_bfd test tells us), just | |
2563 | call the generic function. Any adjustment will be done at final | |
2564 | link time. */ | |
2565 | if (output_bfd != NULL) | |
cedb70c5 | 2566 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 | 2567 | input_section, output_bfd, error_message); |
5bd4f169 | 2568 | |
805fc799 AM |
2569 | /* Subtract the symbol section base address. */ |
2570 | reloc_entry->addend -= symbol->section->output_section->vma; | |
5bd4f169 AM |
2571 | return bfd_reloc_continue; |
2572 | } | |
2573 | ||
805fc799 | 2574 | static bfd_reloc_status_type |
4ce794b7 AM |
2575 | ppc64_elf_sectoff_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2576 | void *data, asection *input_section, | |
2577 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2578 | { |
2579 | /* If this is a relocatable link (output_bfd test tells us), just | |
2580 | call the generic function. Any adjustment will be done at final | |
2581 | link time. */ | |
2582 | if (output_bfd != NULL) | |
cedb70c5 | 2583 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2584 | input_section, output_bfd, error_message); |
2585 | ||
2586 | /* Subtract the symbol section base address. */ | |
2587 | reloc_entry->addend -= symbol->section->output_section->vma; | |
2588 | ||
2589 | /* Adjust the addend for sign extension of the low 16 bits. */ | |
2590 | reloc_entry->addend += 0x8000; | |
2591 | return bfd_reloc_continue; | |
2592 | } | |
2593 | ||
2594 | static bfd_reloc_status_type | |
4ce794b7 AM |
2595 | ppc64_elf_toc_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2596 | void *data, asection *input_section, | |
2597 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2598 | { |
2599 | bfd_vma TOCstart; | |
2600 | ||
2601 | /* If this is a relocatable link (output_bfd test tells us), just | |
2602 | call the generic function. Any adjustment will be done at final | |
2603 | link time. */ | |
2604 | if (output_bfd != NULL) | |
cedb70c5 | 2605 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2606 | input_section, output_bfd, error_message); |
2607 | ||
2608 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
2609 | if (TOCstart == 0) | |
1c865ab2 | 2610 | TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner); |
805fc799 AM |
2611 | |
2612 | /* Subtract the TOC base address. */ | |
2613 | reloc_entry->addend -= TOCstart + TOC_BASE_OFF; | |
2614 | return bfd_reloc_continue; | |
2615 | } | |
2616 | ||
2617 | static bfd_reloc_status_type | |
4ce794b7 AM |
2618 | ppc64_elf_toc_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2619 | void *data, asection *input_section, | |
2620 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2621 | { |
2622 | bfd_vma TOCstart; | |
2623 | ||
2624 | /* If this is a relocatable link (output_bfd test tells us), just | |
2625 | call the generic function. Any adjustment will be done at final | |
2626 | link time. */ | |
2627 | if (output_bfd != NULL) | |
cedb70c5 | 2628 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2629 | input_section, output_bfd, error_message); |
2630 | ||
2631 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
2632 | if (TOCstart == 0) | |
1c865ab2 | 2633 | TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner); |
805fc799 AM |
2634 | |
2635 | /* Subtract the TOC base address. */ | |
2636 | reloc_entry->addend -= TOCstart + TOC_BASE_OFF; | |
2637 | ||
2638 | /* Adjust the addend for sign extension of the low 16 bits. */ | |
2639 | reloc_entry->addend += 0x8000; | |
2640 | return bfd_reloc_continue; | |
2641 | } | |
2642 | ||
2643 | static bfd_reloc_status_type | |
4ce794b7 AM |
2644 | ppc64_elf_toc64_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2645 | void *data, asection *input_section, | |
2646 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2647 | { |
2648 | bfd_vma TOCstart; | |
2649 | bfd_size_type octets; | |
2650 | ||
2651 | /* If this is a relocatable link (output_bfd test tells us), just | |
2652 | call the generic function. Any adjustment will be done at final | |
2653 | link time. */ | |
2654 | if (output_bfd != NULL) | |
cedb70c5 | 2655 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2656 | input_section, output_bfd, error_message); |
2657 | ||
2658 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
2659 | if (TOCstart == 0) | |
1c865ab2 | 2660 | TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner); |
805fc799 AM |
2661 | |
2662 | octets = reloc_entry->address * bfd_octets_per_byte (abfd); | |
2663 | bfd_put_64 (abfd, TOCstart + TOC_BASE_OFF, (bfd_byte *) data + octets); | |
2664 | return bfd_reloc_ok; | |
2665 | } | |
2666 | ||
2667 | static bfd_reloc_status_type | |
4ce794b7 AM |
2668 | ppc64_elf_unhandled_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2669 | void *data, asection *input_section, | |
2670 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2671 | { |
2672 | /* If this is a relocatable link (output_bfd test tells us), just | |
2673 | call the generic function. Any adjustment will be done at final | |
2674 | link time. */ | |
2675 | if (output_bfd != NULL) | |
cedb70c5 | 2676 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2677 | input_section, output_bfd, error_message); |
2678 | ||
2679 | if (error_message != NULL) | |
2680 | { | |
2681 | static char buf[60]; | |
2682 | sprintf (buf, "generic linker can't handle %s", | |
2683 | reloc_entry->howto->name); | |
2684 | *error_message = buf; | |
2685 | } | |
2686 | return bfd_reloc_dangerous; | |
2687 | } | |
2688 | ||
927be08e AM |
2689 | /* Track GOT entries needed for a given symbol. We might need more |
2690 | than one got entry per symbol. */ | |
2691 | struct got_entry | |
2692 | { | |
2693 | struct got_entry *next; | |
2694 | ||
2695 | /* The symbol addend that we'll be placing in the GOT. */ | |
2696 | bfd_vma addend; | |
2697 | ||
2698 | /* Unlike other ELF targets, we use separate GOT entries for the same | |
2699 | symbol referenced from different input files. This is to support | |
2700 | automatic multiple TOC/GOT sections, where the TOC base can vary | |
2701 | from one input file to another. After partitioning into TOC groups | |
2702 | we merge entries within the group. | |
2703 | ||
2704 | Point to the BFD owning this GOT entry. */ | |
2705 | bfd *owner; | |
2706 | ||
2707 | /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD, | |
2708 | TLS_TPREL or TLS_DTPREL for tls entries. */ | |
f961d9dd | 2709 | unsigned char tls_type; |
927be08e AM |
2710 | |
2711 | /* Non-zero if got.ent points to real entry. */ | |
f961d9dd | 2712 | unsigned char is_indirect; |
927be08e AM |
2713 | |
2714 | /* Reference count until size_dynamic_sections, GOT offset thereafter. */ | |
2715 | union | |
2716 | { | |
2717 | bfd_signed_vma refcount; | |
2718 | bfd_vma offset; | |
2719 | struct got_entry *ent; | |
2720 | } got; | |
2721 | }; | |
2722 | ||
2723 | /* The same for PLT. */ | |
2724 | struct plt_entry | |
2725 | { | |
2726 | struct plt_entry *next; | |
2727 | ||
2728 | bfd_vma addend; | |
2729 | ||
2730 | union | |
2731 | { | |
2732 | bfd_signed_vma refcount; | |
2733 | bfd_vma offset; | |
2734 | } plt; | |
2735 | }; | |
2736 | ||
e717da7e AM |
2737 | struct ppc64_elf_obj_tdata |
2738 | { | |
2739 | struct elf_obj_tdata elf; | |
2740 | ||
2741 | /* Shortcuts to dynamic linker sections. */ | |
2742 | asection *got; | |
2743 | asection *relgot; | |
2744 | ||
b3fac117 AM |
2745 | /* Used during garbage collection. We attach global symbols defined |
2746 | on removed .opd entries to this section so that the sym is removed. */ | |
2747 | asection *deleted_section; | |
81688140 | 2748 | |
927be08e | 2749 | /* TLS local dynamic got entry handling. Support for multiple GOT |
e717da7e | 2750 | sections means we potentially need one of these for each input bfd. */ |
927be08e | 2751 | struct got_entry tlsld_got; |
8860955f | 2752 | |
729eabd5 AM |
2753 | union { |
2754 | /* A copy of relocs before they are modified for --emit-relocs. */ | |
2755 | Elf_Internal_Rela *relocs; | |
2756 | ||
2757 | /* Section contents. */ | |
2758 | bfd_byte *contents; | |
2759 | } opd; | |
d77c8a4b AM |
2760 | |
2761 | /* Nonzero if this bfd has small toc/got relocs, ie. that expect | |
2762 | the reloc to be in the range -32768 to 32767. */ | |
98528052 AM |
2763 | unsigned int has_small_toc_reloc : 1; |
2764 | ||
560c8763 AM |
2765 | /* Set if toc/got ha relocs detected not using r2, or lo reloc |
2766 | instruction not one we handle. */ | |
2767 | unsigned int unexpected_toc_insn : 1; | |
e717da7e AM |
2768 | }; |
2769 | ||
2770 | #define ppc64_elf_tdata(bfd) \ | |
2771 | ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any) | |
2772 | ||
2773 | #define ppc64_tlsld_got(bfd) \ | |
2774 | (&ppc64_elf_tdata (bfd)->tlsld_got) | |
2775 | ||
0c8d6e5c AM |
2776 | #define is_ppc64_elf(bfd) \ |
2777 | (bfd_get_flavour (bfd) == bfd_target_elf_flavour \ | |
4dfe6ac6 | 2778 | && elf_object_id (bfd) == PPC64_ELF_DATA) |
0c8d6e5c | 2779 | |
e717da7e AM |
2780 | /* Override the generic function because we store some extras. */ |
2781 | ||
2782 | static bfd_boolean | |
2783 | ppc64_elf_mkobject (bfd *abfd) | |
2784 | { | |
0ffa91dd | 2785 | return bfd_elf_allocate_object (abfd, sizeof (struct ppc64_elf_obj_tdata), |
4dfe6ac6 | 2786 | PPC64_ELF_DATA); |
e717da7e AM |
2787 | } |
2788 | ||
feee612b AM |
2789 | /* Fix bad default arch selected for a 64 bit input bfd when the |
2790 | default is 32 bit. */ | |
2791 | ||
b34976b6 | 2792 | static bfd_boolean |
4ce794b7 | 2793 | ppc64_elf_object_p (bfd *abfd) |
feee612b AM |
2794 | { |
2795 | if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 32) | |
2796 | { | |
2797 | Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd); | |
2798 | ||
2799 | if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS64) | |
2800 | { | |
2801 | /* Relies on arch after 32 bit default being 64 bit default. */ | |
2802 | abfd->arch_info = abfd->arch_info->next; | |
2803 | BFD_ASSERT (abfd->arch_info->bits_per_word == 64); | |
2804 | } | |
2805 | } | |
b34976b6 | 2806 | return TRUE; |
feee612b AM |
2807 | } |
2808 | ||
d37c89e5 AM |
2809 | /* Support for core dump NOTE sections. */ |
2810 | ||
2811 | static bfd_boolean | |
2812 | ppc64_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) | |
2813 | { | |
eea6121a | 2814 | size_t offset, size; |
d37c89e5 AM |
2815 | |
2816 | if (note->descsz != 504) | |
2817 | return FALSE; | |
2818 | ||
2819 | /* pr_cursig */ | |
228e534f | 2820 | elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12); |
d37c89e5 AM |
2821 | |
2822 | /* pr_pid */ | |
228e534f | 2823 | elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 32); |
d37c89e5 AM |
2824 | |
2825 | /* pr_reg */ | |
2826 | offset = 112; | |
eea6121a | 2827 | size = 384; |
d37c89e5 AM |
2828 | |
2829 | /* Make a ".reg/999" section. */ | |
2830 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", | |
eea6121a | 2831 | size, note->descpos + offset); |
d37c89e5 AM |
2832 | } |
2833 | ||
2834 | static bfd_boolean | |
2835 | ppc64_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) | |
2836 | { | |
2837 | if (note->descsz != 136) | |
2838 | return FALSE; | |
2839 | ||
228e534f | 2840 | elf_tdata (abfd)->core->pid |
bc989cdc | 2841 | = bfd_get_32 (abfd, note->descdata + 24); |
228e534f | 2842 | elf_tdata (abfd)->core->program |
d37c89e5 | 2843 | = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16); |
228e534f | 2844 | elf_tdata (abfd)->core->command |
d37c89e5 AM |
2845 | = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80); |
2846 | ||
2847 | return TRUE; | |
2848 | } | |
2849 | ||
183e98be AM |
2850 | static char * |
2851 | ppc64_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type, | |
2852 | ...) | |
2853 | { | |
2854 | switch (note_type) | |
2855 | { | |
2856 | default: | |
2857 | return NULL; | |
2858 | ||
2859 | case NT_PRPSINFO: | |
2860 | { | |
2861 | char data[136]; | |
2862 | va_list ap; | |
2863 | ||
2864 | va_start (ap, note_type); | |
75cd47ed | 2865 | memset (data, 0, sizeof (data)); |
183e98be AM |
2866 | strncpy (data + 40, va_arg (ap, const char *), 16); |
2867 | strncpy (data + 56, va_arg (ap, const char *), 80); | |
2868 | va_end (ap); | |
2869 | return elfcore_write_note (abfd, buf, bufsiz, | |
2870 | "CORE", note_type, data, sizeof (data)); | |
2871 | } | |
2872 | ||
2873 | case NT_PRSTATUS: | |
2874 | { | |
2875 | char data[504]; | |
2876 | va_list ap; | |
2877 | long pid; | |
2878 | int cursig; | |
2879 | const void *greg; | |
2880 | ||
2881 | va_start (ap, note_type); | |
2882 | memset (data, 0, 112); | |
2883 | pid = va_arg (ap, long); | |
2884 | bfd_put_32 (abfd, pid, data + 32); | |
2885 | cursig = va_arg (ap, int); | |
2886 | bfd_put_16 (abfd, cursig, data + 12); | |
2887 | greg = va_arg (ap, const void *); | |
2888 | memcpy (data + 112, greg, 384); | |
2889 | memset (data + 496, 0, 8); | |
2890 | va_end (ap); | |
2891 | return elfcore_write_note (abfd, buf, bufsiz, | |
2892 | "CORE", note_type, data, sizeof (data)); | |
2893 | } | |
2894 | } | |
2895 | } | |
2896 | ||
5d35169e AM |
2897 | /* Add extra PPC sections. */ |
2898 | ||
b35d266b | 2899 | static const struct bfd_elf_special_section ppc64_elf_special_sections[]= |
7f4d3958 | 2900 | { |
0112cd26 NC |
2901 | { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, 0 }, |
2902 | { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, | |
2903 | { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
2904 | { STRING_COMMA_LEN (".toc"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
2905 | { STRING_COMMA_LEN (".toc1"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
2906 | { STRING_COMMA_LEN (".tocbss"), 0, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, | |
2907 | { NULL, 0, 0, 0, 0 } | |
5d35169e AM |
2908 | }; |
2909 | ||
7c8fe5c4 AM |
2910 | enum _ppc64_sec_type { |
2911 | sec_normal = 0, | |
2912 | sec_opd = 1, | |
2913 | sec_toc = 2 | |
2914 | }; | |
2915 | ||
f0abc2a1 AM |
2916 | struct _ppc64_elf_section_data |
2917 | { | |
2918 | struct bfd_elf_section_data elf; | |
411e1bfb | 2919 | |
f0abc2a1 AM |
2920 | union |
2921 | { | |
74f0fb50 AM |
2922 | /* An array with one entry for each opd function descriptor. */ |
2923 | struct _opd_sec_data | |
2924 | { | |
2925 | /* Points to the function code section for local opd entries. */ | |
2926 | asection **func_sec; | |
2927 | ||
2928 | /* After editing .opd, adjust references to opd local syms. */ | |
2929 | long *adjust; | |
2930 | } opd; | |
7c8fe5c4 | 2931 | |
3a71aa26 AM |
2932 | /* An array for toc sections, indexed by offset/8. */ |
2933 | struct _toc_sec_data | |
2934 | { | |
2935 | /* Specifies the relocation symbol index used at a given toc offset. */ | |
2936 | unsigned *symndx; | |
2937 | ||
2938 | /* And the relocation addend. */ | |
2939 | bfd_vma *add; | |
2940 | } toc; | |
7c8fe5c4 AM |
2941 | } u; |
2942 | ||
2943 | enum _ppc64_sec_type sec_type:2; | |
411e1bfb | 2944 | |
7c8fe5c4 AM |
2945 | /* Flag set when small branches are detected. Used to |
2946 | select suitable defaults for the stub group size. */ | |
2947 | unsigned int has_14bit_branch:1; | |
f0abc2a1 AM |
2948 | }; |
2949 | ||
2950 | #define ppc64_elf_section_data(sec) \ | |
411e1bfb | 2951 | ((struct _ppc64_elf_section_data *) elf_section_data (sec)) |
f0abc2a1 AM |
2952 | |
2953 | static bfd_boolean | |
4ce794b7 | 2954 | ppc64_elf_new_section_hook (bfd *abfd, asection *sec) |
f0abc2a1 | 2955 | { |
f592407e AM |
2956 | if (!sec->used_by_bfd) |
2957 | { | |
2958 | struct _ppc64_elf_section_data *sdata; | |
2959 | bfd_size_type amt = sizeof (*sdata); | |
f0abc2a1 | 2960 | |
f592407e AM |
2961 | sdata = bfd_zalloc (abfd, amt); |
2962 | if (sdata == NULL) | |
2963 | return FALSE; | |
2964 | sec->used_by_bfd = sdata; | |
2965 | } | |
f0abc2a1 AM |
2966 | |
2967 | return _bfd_elf_new_section_hook (abfd, sec); | |
2968 | } | |
4025353c | 2969 | |
74f0fb50 | 2970 | static struct _opd_sec_data * |
4025353c AM |
2971 | get_opd_info (asection * sec) |
2972 | { | |
2973 | if (sec != NULL | |
2974 | && ppc64_elf_section_data (sec) != NULL | |
7c8fe5c4 | 2975 | && ppc64_elf_section_data (sec)->sec_type == sec_opd) |
74f0fb50 | 2976 | return &ppc64_elf_section_data (sec)->u.opd; |
4025353c AM |
2977 | return NULL; |
2978 | } | |
ee67d69a AM |
2979 | |
2980 | static inline int | |
2981 | abiversion (bfd *abfd) | |
2982 | { | |
2983 | return elf_elfheader (abfd)->e_flags & EF_PPC64_ABI; | |
2984 | } | |
2985 | ||
2986 | static inline void | |
2987 | set_abiversion (bfd *abfd, int ver) | |
2988 | { | |
2989 | elf_elfheader (abfd)->e_flags &= ~EF_PPC64_ABI; | |
2990 | elf_elfheader (abfd)->e_flags |= ver & EF_PPC64_ABI; | |
2991 | } | |
90e3cdf2 JJ |
2992 | \f |
2993 | /* Parameters for the qsort hook. */ | |
90e3cdf2 JJ |
2994 | static bfd_boolean synthetic_relocatable; |
2995 | ||
699733f6 | 2996 | /* qsort comparison function for ppc64_elf_get_synthetic_symtab. */ |
90e3cdf2 JJ |
2997 | |
2998 | static int | |
2999 | compare_symbols (const void *ap, const void *bp) | |
3000 | { | |
3001 | const asymbol *a = * (const asymbol **) ap; | |
3002 | const asymbol *b = * (const asymbol **) bp; | |
3003 | ||
699733f6 AM |
3004 | /* Section symbols first. */ |
3005 | if ((a->flags & BSF_SECTION_SYM) && !(b->flags & BSF_SECTION_SYM)) | |
90e3cdf2 | 3006 | return -1; |
699733f6 | 3007 | if (!(a->flags & BSF_SECTION_SYM) && (b->flags & BSF_SECTION_SYM)) |
90e3cdf2 JJ |
3008 | return 1; |
3009 | ||
699733f6 | 3010 | /* then .opd symbols. */ |
ffcfec52 AM |
3011 | if (strcmp (a->section->name, ".opd") == 0 |
3012 | && strcmp (b->section->name, ".opd") != 0) | |
90e3cdf2 | 3013 | return -1; |
ffcfec52 AM |
3014 | if (strcmp (a->section->name, ".opd") != 0 |
3015 | && strcmp (b->section->name, ".opd") == 0) | |
90e3cdf2 JJ |
3016 | return 1; |
3017 | ||
699733f6 | 3018 | /* then other code symbols. */ |
90e3cdf2 JJ |
3019 | if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) |
3020 | == (SEC_CODE | SEC_ALLOC) | |
3021 | && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
3022 | != (SEC_CODE | SEC_ALLOC)) | |
3023 | return -1; | |
3024 | ||
3025 | if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
3026 | != (SEC_CODE | SEC_ALLOC) | |
3027 | && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
3028 | == (SEC_CODE | SEC_ALLOC)) | |
3029 | return 1; | |
3030 | ||
3031 | if (synthetic_relocatable) | |
3032 | { | |
3033 | if (a->section->id < b->section->id) | |
3034 | return -1; | |
3035 | ||
3036 | if (a->section->id > b->section->id) | |
3037 | return 1; | |
3038 | } | |
3039 | ||
3040 | if (a->value + a->section->vma < b->value + b->section->vma) | |
3041 | return -1; | |
3042 | ||
3043 | if (a->value + a->section->vma > b->value + b->section->vma) | |
3044 | return 1; | |
3045 | ||
4d35a0aa AM |
3046 | /* For syms with the same value, prefer strong dynamic global function |
3047 | syms over other syms. */ | |
3048 | if ((a->flags & BSF_GLOBAL) != 0 && (b->flags & BSF_GLOBAL) == 0) | |
3049 | return -1; | |
3050 | ||
3051 | if ((a->flags & BSF_GLOBAL) == 0 && (b->flags & BSF_GLOBAL) != 0) | |
3052 | return 1; | |
3053 | ||
3054 | if ((a->flags & BSF_FUNCTION) != 0 && (b->flags & BSF_FUNCTION) == 0) | |
3055 | return -1; | |
3056 | ||
3057 | if ((a->flags & BSF_FUNCTION) == 0 && (b->flags & BSF_FUNCTION) != 0) | |
3058 | return 1; | |
3059 | ||
3060 | if ((a->flags & BSF_WEAK) == 0 && (b->flags & BSF_WEAK) != 0) | |
3061 | return -1; | |
3062 | ||
3063 | if ((a->flags & BSF_WEAK) != 0 && (b->flags & BSF_WEAK) == 0) | |
3064 | return 1; | |
3065 | ||
3066 | if ((a->flags & BSF_DYNAMIC) != 0 && (b->flags & BSF_DYNAMIC) == 0) | |
3067 | return -1; | |
3068 | ||
3069 | if ((a->flags & BSF_DYNAMIC) == 0 && (b->flags & BSF_DYNAMIC) != 0) | |
3070 | return 1; | |
3071 | ||
90e3cdf2 JJ |
3072 | return 0; |
3073 | } | |
3074 | ||
699733f6 | 3075 | /* Search SYMS for a symbol of the given VALUE. */ |
90e3cdf2 | 3076 | |
699733f6 AM |
3077 | static asymbol * |
3078 | sym_exists_at (asymbol **syms, long lo, long hi, int id, bfd_vma value) | |
90e3cdf2 | 3079 | { |
699733f6 | 3080 | long mid; |
90e3cdf2 | 3081 | |
699733f6 AM |
3082 | if (id == -1) |
3083 | { | |
3084 | while (lo < hi) | |
3085 | { | |
3086 | mid = (lo + hi) >> 1; | |
3087 | if (syms[mid]->value + syms[mid]->section->vma < value) | |
3088 | lo = mid + 1; | |
3089 | else if (syms[mid]->value + syms[mid]->section->vma > value) | |
3090 | hi = mid; | |
3091 | else | |
3092 | return syms[mid]; | |
3093 | } | |
3094 | } | |
3095 | else | |
3096 | { | |
3097 | while (lo < hi) | |
3098 | { | |
3099 | mid = (lo + hi) >> 1; | |
3100 | if (syms[mid]->section->id < id) | |
3101 | lo = mid + 1; | |
3102 | else if (syms[mid]->section->id > id) | |
3103 | hi = mid; | |
3104 | else if (syms[mid]->value < value) | |
3105 | lo = mid + 1; | |
3106 | else if (syms[mid]->value > value) | |
3107 | hi = mid; | |
3108 | else | |
3109 | return syms[mid]; | |
3110 | } | |
3111 | } | |
3112 | return NULL; | |
90e3cdf2 JJ |
3113 | } |
3114 | ||
468392fb AM |
3115 | static bfd_boolean |
3116 | section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr) | |
3117 | { | |
3118 | bfd_vma vma = *(bfd_vma *) ptr; | |
3119 | return ((section->flags & SEC_ALLOC) != 0 | |
3120 | && section->vma <= vma | |
3121 | && vma < section->vma + section->size); | |
3122 | } | |
3123 | ||
699733f6 | 3124 | /* Create synthetic symbols, effectively restoring "dot-symbol" function |
468392fb | 3125 | entry syms. Also generate @plt symbols for the glink branch table. */ |
90e3cdf2 JJ |
3126 | |
3127 | static long | |
a7535cf3 AM |
3128 | ppc64_elf_get_synthetic_symtab (bfd *abfd, |
3129 | long static_count, asymbol **static_syms, | |
3130 | long dyn_count, asymbol **dyn_syms, | |
c9727e01 | 3131 | asymbol **ret) |
90e3cdf2 JJ |
3132 | { |
3133 | asymbol *s; | |
699733f6 AM |
3134 | long i; |
3135 | long count; | |
90e3cdf2 | 3136 | char *names; |
a7535cf3 | 3137 | long symcount, codesecsym, codesecsymend, secsymend, opdsymend; |
ee67d69a | 3138 | asection *opd = NULL; |
90e3cdf2 | 3139 | bfd_boolean relocatable = (abfd->flags & (EXEC_P | DYNAMIC)) == 0; |
a7535cf3 | 3140 | asymbol **syms; |
ee67d69a | 3141 | int abi = abiversion (abfd); |
90e3cdf2 JJ |
3142 | |
3143 | *ret = NULL; | |
3144 | ||
ee67d69a AM |
3145 | if (abi < 2) |
3146 | { | |
3147 | opd = bfd_get_section_by_name (abfd, ".opd"); | |
3148 | if (opd == NULL && abi == 1) | |
3149 | return 0; | |
3150 | } | |
90e3cdf2 | 3151 | |
a7535cf3 | 3152 | symcount = static_count; |
c9727e01 | 3153 | if (!relocatable) |
a7535cf3 | 3154 | symcount += dyn_count; |
90e3cdf2 | 3155 | if (symcount == 0) |
c9727e01 | 3156 | return 0; |
90e3cdf2 | 3157 | |
a7535cf3 AM |
3158 | syms = bfd_malloc ((symcount + 1) * sizeof (*syms)); |
3159 | if (syms == NULL) | |
7356fed5 | 3160 | return -1; |
a7535cf3 AM |
3161 | |
3162 | if (!relocatable && static_count != 0 && dyn_count != 0) | |
3163 | { | |
3164 | /* Use both symbol tables. */ | |
3165 | memcpy (syms, static_syms, static_count * sizeof (*syms)); | |
3166 | memcpy (syms + static_count, dyn_syms, (dyn_count + 1) * sizeof (*syms)); | |
3167 | } | |
3168 | else if (!relocatable && static_count == 0) | |
3169 | memcpy (syms, dyn_syms, (symcount + 1) * sizeof (*syms)); | |
3170 | else | |
3171 | memcpy (syms, static_syms, (symcount + 1) * sizeof (*syms)); | |
3172 | ||
90e3cdf2 | 3173 | synthetic_relocatable = relocatable; |
595da8c5 | 3174 | qsort (syms, symcount, sizeof (*syms), compare_symbols); |
90e3cdf2 | 3175 | |
c9727e01 AM |
3176 | if (!relocatable && symcount > 1) |
3177 | { | |
3178 | long j; | |
3179 | /* Trim duplicate syms, since we may have merged the normal and | |
3180 | dynamic symbols. Actually, we only care about syms that have | |
3b36f7e6 | 3181 | different values, so trim any with the same value. */ |
c9727e01 AM |
3182 | for (i = 1, j = 1; i < symcount; ++i) |
3183 | if (syms[i - 1]->value + syms[i - 1]->section->vma | |
3184 | != syms[i]->value + syms[i]->section->vma) | |
3185 | syms[j++] = syms[i]; | |
3186 | symcount = j; | |
3187 | } | |
3188 | ||
699733f6 | 3189 | i = 0; |
ffcfec52 | 3190 | if (strcmp (syms[i]->section->name, ".opd") == 0) |
699733f6 AM |
3191 | ++i; |
3192 | codesecsym = i; | |
90e3cdf2 | 3193 | |
699733f6 AM |
3194 | for (; i < symcount; ++i) |
3195 | if (((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
3196 | != (SEC_CODE | SEC_ALLOC)) | |
3197 | || (syms[i]->flags & BSF_SECTION_SYM) == 0) | |
3198 | break; | |
3199 | codesecsymend = i; | |
90e3cdf2 | 3200 | |
699733f6 AM |
3201 | for (; i < symcount; ++i) |
3202 | if ((syms[i]->flags & BSF_SECTION_SYM) == 0) | |
3203 | break; | |
3204 | secsymend = i; | |
90e3cdf2 | 3205 | |
699733f6 | 3206 | for (; i < symcount; ++i) |
ffcfec52 | 3207 | if (strcmp (syms[i]->section->name, ".opd") != 0) |
699733f6 AM |
3208 | break; |
3209 | opdsymend = i; | |
90e3cdf2 | 3210 | |
699733f6 AM |
3211 | for (; i < symcount; ++i) |
3212 | if ((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
3213 | != (SEC_CODE | SEC_ALLOC)) | |
3214 | break; | |
3215 | symcount = i; | |
3216 | ||
c9727e01 | 3217 | count = 0; |
90e3cdf2 | 3218 | |
699733f6 | 3219 | if (relocatable) |
90e3cdf2 | 3220 | { |
699733f6 AM |
3221 | bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean); |
3222 | arelent *r; | |
3223 | size_t size; | |
3224 | long relcount; | |
90e3cdf2 | 3225 | |
468392fb AM |
3226 | if (opdsymend == secsymend) |
3227 | goto done; | |
3228 | ||
699733f6 | 3229 | slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; |
90e3cdf2 | 3230 | relcount = (opd->flags & SEC_RELOC) ? opd->reloc_count : 0; |
7356fed5 | 3231 | if (relcount == 0) |
c9727e01 | 3232 | goto done; |
90e3cdf2 | 3233 | |
7356fed5 AM |
3234 | if (!(*slurp_relocs) (abfd, opd, static_syms, FALSE)) |
3235 | { | |
3236 | count = -1; | |
3237 | goto done; | |
3238 | } | |
3239 | ||
699733f6 | 3240 | size = 0; |
595da8c5 | 3241 | for (i = secsymend, r = opd->relocation; i < opdsymend; ++i) |
699733f6 AM |
3242 | { |
3243 | asymbol *sym; | |
90e3cdf2 | 3244 | |
595da8c5 | 3245 | while (r < opd->relocation + relcount |
699733f6 AM |
3246 | && r->address < syms[i]->value + opd->vma) |
3247 | ++r; | |
90e3cdf2 | 3248 | |
595da8c5 | 3249 | if (r == opd->relocation + relcount) |
699733f6 | 3250 | break; |
90e3cdf2 | 3251 | |
699733f6 AM |
3252 | if (r->address != syms[i]->value + opd->vma) |
3253 | continue; | |
90e3cdf2 | 3254 | |
699733f6 AM |
3255 | if (r->howto->type != R_PPC64_ADDR64) |
3256 | continue; | |
90e3cdf2 | 3257 | |
699733f6 AM |
3258 | sym = *r->sym_ptr_ptr; |
3259 | if (!sym_exists_at (syms, opdsymend, symcount, | |
3260 | sym->section->id, sym->value + r->addend)) | |
3261 | { | |
3262 | ++count; | |
3263 | size += sizeof (asymbol); | |
3264 | size += strlen (syms[i]->name) + 2; | |
3265 | } | |
3266 | } | |
90e3cdf2 | 3267 | |
699733f6 AM |
3268 | s = *ret = bfd_malloc (size); |
3269 | if (s == NULL) | |
3270 | { | |
7356fed5 | 3271 | count = -1; |
c9727e01 | 3272 | goto done; |
699733f6 | 3273 | } |
90e3cdf2 | 3274 | |
699733f6 | 3275 | names = (char *) (s + count); |
90e3cdf2 | 3276 | |
595da8c5 | 3277 | for (i = secsymend, r = opd->relocation; i < opdsymend; ++i) |
90e3cdf2 | 3278 | { |
699733f6 | 3279 | asymbol *sym; |
90e3cdf2 | 3280 | |
595da8c5 | 3281 | while (r < opd->relocation + relcount |
699733f6 AM |
3282 | && r->address < syms[i]->value + opd->vma) |
3283 | ++r; | |
90e3cdf2 | 3284 | |
595da8c5 | 3285 | if (r == opd->relocation + relcount) |
699733f6 AM |
3286 | break; |
3287 | ||
3288 | if (r->address != syms[i]->value + opd->vma) | |
3289 | continue; | |
3290 | ||
3291 | if (r->howto->type != R_PPC64_ADDR64) | |
3292 | continue; | |
90e3cdf2 | 3293 | |
699733f6 AM |
3294 | sym = *r->sym_ptr_ptr; |
3295 | if (!sym_exists_at (syms, opdsymend, symcount, | |
3296 | sym->section->id, sym->value + r->addend)) | |
3297 | { | |
3298 | size_t len; | |
3299 | ||
3300 | *s = *syms[i]; | |
6ba2a415 | 3301 | s->flags |= BSF_SYNTHETIC; |
699733f6 AM |
3302 | s->section = sym->section; |
3303 | s->value = sym->value + r->addend; | |
3304 | s->name = names; | |
3305 | *names++ = '.'; | |
3306 | len = strlen (syms[i]->name); | |
3307 | memcpy (names, syms[i]->name, len + 1); | |
3308 | names += len + 1; | |
6f610d07 UW |
3309 | /* Have udata.p point back to the original symbol this |
3310 | synthetic symbol was derived from. */ | |
3311 | s->udata.p = syms[i]; | |
699733f6 AM |
3312 | s++; |
3313 | } | |
3314 | } | |
3315 | } | |
3316 | else | |
90e3cdf2 | 3317 | { |
468392fb | 3318 | bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean); |
ee67d69a | 3319 | bfd_byte *contents = NULL; |
699733f6 | 3320 | size_t size; |
468392fb AM |
3321 | long plt_count = 0; |
3322 | bfd_vma glink_vma = 0, resolv_vma = 0; | |
3323 | asection *dynamic, *glink = NULL, *relplt = NULL; | |
3324 | arelent *p; | |
90e3cdf2 | 3325 | |
ee67d69a | 3326 | if (opd != NULL && !bfd_malloc_and_get_section (abfd, opd, &contents)) |
699733f6 | 3327 | { |
ee67d69a | 3328 | free_contents_and_exit: |
699733f6 | 3329 | if (contents) |
ee67d69a | 3330 | free (contents); |
7356fed5 | 3331 | count = -1; |
c9727e01 | 3332 | goto done; |
699733f6 | 3333 | } |
90e3cdf2 | 3334 | |
699733f6 AM |
3335 | size = 0; |
3336 | for (i = secsymend; i < opdsymend; ++i) | |
3337 | { | |
3338 | bfd_vma ent; | |
90e3cdf2 | 3339 | |
5ef11c02 AM |
3340 | /* Ignore bogus symbols. */ |
3341 | if (syms[i]->value > opd->size - 8) | |
3342 | continue; | |
3343 | ||
699733f6 AM |
3344 | ent = bfd_get_64 (abfd, contents + syms[i]->value); |
3345 | if (!sym_exists_at (syms, opdsymend, symcount, -1, ent)) | |
3346 | { | |
3347 | ++count; | |
3348 | size += sizeof (asymbol); | |
3349 | size += strlen (syms[i]->name) + 2; | |
3350 | } | |
3351 | } | |
90e3cdf2 | 3352 | |
468392fb | 3353 | /* Get start of .glink stubs from DT_PPC64_GLINK. */ |
066ee829 AM |
3354 | if (dyn_count != 0 |
3355 | && (dynamic = bfd_get_section_by_name (abfd, ".dynamic")) != NULL) | |
468392fb AM |
3356 | { |
3357 | bfd_byte *dynbuf, *extdyn, *extdynend; | |
3358 | size_t extdynsize; | |
3359 | void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *); | |
3360 | ||
3361 | if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf)) | |
3362 | goto free_contents_and_exit; | |
3363 | ||
3364 | extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn; | |
3365 | swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in; | |
3366 | ||
3367 | extdyn = dynbuf; | |
3368 | extdynend = extdyn + dynamic->size; | |
3369 | for (; extdyn < extdynend; extdyn += extdynsize) | |
3370 | { | |
3371 | Elf_Internal_Dyn dyn; | |
3372 | (*swap_dyn_in) (abfd, extdyn, &dyn); | |
3373 | ||
3374 | if (dyn.d_tag == DT_NULL) | |
3375 | break; | |
3376 | ||
3377 | if (dyn.d_tag == DT_PPC64_GLINK) | |
3378 | { | |
b9e5796b AM |
3379 | /* The first glink stub starts at offset 32; see |
3380 | comment in ppc64_elf_finish_dynamic_sections. */ | |
3381 | glink_vma = dyn.d_un.d_val + GLINK_CALL_STUB_SIZE - 8 * 4; | |
468392fb AM |
3382 | /* The .glink section usually does not survive the final |
3383 | link; search for the section (usually .text) where the | |
3384 | glink stubs now reside. */ | |
3385 | glink = bfd_sections_find_if (abfd, section_covers_vma, | |
3386 | &glink_vma); | |
3387 | break; | |
3388 | } | |
3389 | } | |
3390 | ||
3391 | free (dynbuf); | |
3392 | } | |
3393 | ||
3394 | if (glink != NULL) | |
3395 | { | |
3396 | /* Determine __glink trampoline by reading the relative branch | |
3397 | from the first glink stub. */ | |
3398 | bfd_byte buf[4]; | |
b9e5796b AM |
3399 | unsigned int off = 0; |
3400 | ||
3401 | while (bfd_get_section_contents (abfd, glink, buf, | |
3402 | glink_vma + off - glink->vma, 4)) | |
468392fb AM |
3403 | { |
3404 | unsigned int insn = bfd_get_32 (abfd, buf); | |
3405 | insn ^= B_DOT; | |
3406 | if ((insn & ~0x3fffffc) == 0) | |
b9e5796b AM |
3407 | { |
3408 | resolv_vma = glink_vma + off + (insn ^ 0x2000000) - 0x2000000; | |
3409 | break; | |
3410 | } | |
3411 | off += 4; | |
3412 | if (off > 4) | |
3413 | break; | |
468392fb AM |
3414 | } |
3415 | ||
3416 | if (resolv_vma) | |
3417 | size += sizeof (asymbol) + sizeof ("__glink_PLTresolve"); | |
468392fb | 3418 | |
066ee829 AM |
3419 | relplt = bfd_get_section_by_name (abfd, ".rela.plt"); |
3420 | if (relplt != NULL) | |
3421 | { | |
3422 | slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; | |
3423 | if (! (*slurp_relocs) (abfd, relplt, dyn_syms, TRUE)) | |
3424 | goto free_contents_and_exit; | |
68ffbac6 | 3425 | |
066ee829 AM |
3426 | plt_count = relplt->size / sizeof (Elf64_External_Rela); |
3427 | size += plt_count * sizeof (asymbol); | |
468392fb | 3428 | |
066ee829 AM |
3429 | p = relplt->relocation; |
3430 | for (i = 0; i < plt_count; i++, p++) | |
e054468f AM |
3431 | { |
3432 | size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt"); | |
3433 | if (p->addend != 0) | |
3434 | size += sizeof ("+0x") - 1 + 16; | |
3435 | } | |
066ee829 | 3436 | } |
468392fb AM |
3437 | } |
3438 | ||
699733f6 AM |
3439 | s = *ret = bfd_malloc (size); |
3440 | if (s == NULL) | |
7356fed5 | 3441 | goto free_contents_and_exit; |
90e3cdf2 | 3442 | |
468392fb | 3443 | names = (char *) (s + count + plt_count + (resolv_vma != 0)); |
90e3cdf2 | 3444 | |
699733f6 | 3445 | for (i = secsymend; i < opdsymend; ++i) |
90e3cdf2 | 3446 | { |
699733f6 | 3447 | bfd_vma ent; |
90e3cdf2 | 3448 | |
5ef11c02 AM |
3449 | if (syms[i]->value > opd->size - 8) |
3450 | continue; | |
3451 | ||
699733f6 AM |
3452 | ent = bfd_get_64 (abfd, contents + syms[i]->value); |
3453 | if (!sym_exists_at (syms, opdsymend, symcount, -1, ent)) | |
90e3cdf2 | 3454 | { |
c9727e01 | 3455 | long lo, hi; |
699733f6 | 3456 | size_t len; |
c9727e01 | 3457 | asection *sec = abfd->sections; |
90e3cdf2 | 3458 | |
699733f6 AM |
3459 | *s = *syms[i]; |
3460 | lo = codesecsym; | |
3461 | hi = codesecsymend; | |
3462 | while (lo < hi) | |
3463 | { | |
c9727e01 | 3464 | long mid = (lo + hi) >> 1; |
699733f6 AM |
3465 | if (syms[mid]->section->vma < ent) |
3466 | lo = mid + 1; | |
3467 | else if (syms[mid]->section->vma > ent) | |
3468 | hi = mid; | |
3469 | else | |
c9727e01 AM |
3470 | { |
3471 | sec = syms[mid]->section; | |
3472 | break; | |
3473 | } | |
699733f6 AM |
3474 | } |
3475 | ||
c9727e01 | 3476 | if (lo >= hi && lo > codesecsym) |
699733f6 | 3477 | sec = syms[lo - 1]->section; |
699733f6 AM |
3478 | |
3479 | for (; sec != NULL; sec = sec->next) | |
3480 | { | |
3481 | if (sec->vma > ent) | |
3482 | break; | |
63524580 JK |
3483 | /* SEC_LOAD may not be set if SEC is from a separate debug |
3484 | info file. */ | |
3485 | if ((sec->flags & SEC_ALLOC) == 0) | |
699733f6 AM |
3486 | break; |
3487 | if ((sec->flags & SEC_CODE) != 0) | |
3488 | s->section = sec; | |
3489 | } | |
6ba2a415 | 3490 | s->flags |= BSF_SYNTHETIC; |
699733f6 AM |
3491 | s->value = ent - s->section->vma; |
3492 | s->name = names; | |
3493 | *names++ = '.'; | |
3494 | len = strlen (syms[i]->name); | |
3495 | memcpy (names, syms[i]->name, len + 1); | |
3496 | names += len + 1; | |
6f610d07 UW |
3497 | /* Have udata.p point back to the original symbol this |
3498 | synthetic symbol was derived from. */ | |
3499 | s->udata.p = syms[i]; | |
699733f6 | 3500 | s++; |
90e3cdf2 | 3501 | } |
90e3cdf2 | 3502 | } |
699733f6 | 3503 | free (contents); |
468392fb AM |
3504 | |
3505 | if (glink != NULL && relplt != NULL) | |
3506 | { | |
3507 | if (resolv_vma) | |
3508 | { | |
3509 | /* Add a symbol for the main glink trampoline. */ | |
86a4952b | 3510 | memset (s, 0, sizeof *s); |
468392fb | 3511 | s->the_bfd = abfd; |
6ba2a415 | 3512 | s->flags = BSF_GLOBAL | BSF_SYNTHETIC; |
468392fb AM |
3513 | s->section = glink; |
3514 | s->value = resolv_vma - glink->vma; | |
3515 | s->name = names; | |
3516 | memcpy (names, "__glink_PLTresolve", sizeof ("__glink_PLTresolve")); | |
3517 | names += sizeof ("__glink_PLTresolve"); | |
3518 | s++; | |
3519 | count++; | |
3520 | } | |
3521 | ||
3522 | /* FIXME: It would be very much nicer to put sym@plt on the | |
3523 | stub rather than on the glink branch table entry. The | |
3524 | objdump disassembler would then use a sensible symbol | |
3525 | name on plt calls. The difficulty in doing so is | |
3526 | a) finding the stubs, and, | |
3527 | b) matching stubs against plt entries, and, | |
3528 | c) there can be multiple stubs for a given plt entry. | |
3529 | ||
3530 | Solving (a) could be done by code scanning, but older | |
3531 | ppc64 binaries used different stubs to current code. | |
3532 | (b) is the tricky one since you need to known the toc | |
3533 | pointer for at least one function that uses a pic stub to | |
3534 | be able to calculate the plt address referenced. | |
3535 | (c) means gdb would need to set multiple breakpoints (or | |
3536 | find the glink branch itself) when setting breakpoints | |
3537 | for pending shared library loads. */ | |
3538 | p = relplt->relocation; | |
3539 | for (i = 0; i < plt_count; i++, p++) | |
3540 | { | |
3541 | size_t len; | |
3542 | ||
3543 | *s = **p->sym_ptr_ptr; | |
3544 | /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since | |
3545 | we are defining a symbol, ensure one of them is set. */ | |
3546 | if ((s->flags & BSF_LOCAL) == 0) | |
3547 | s->flags |= BSF_GLOBAL; | |
6ba2a415 | 3548 | s->flags |= BSF_SYNTHETIC; |
468392fb AM |
3549 | s->section = glink; |
3550 | s->value = glink_vma - glink->vma; | |
3551 | s->name = names; | |
3552 | s->udata.p = NULL; | |
3553 | len = strlen ((*p->sym_ptr_ptr)->name); | |
3554 | memcpy (names, (*p->sym_ptr_ptr)->name, len); | |
3555 | names += len; | |
e054468f AM |
3556 | if (p->addend != 0) |
3557 | { | |
3558 | memcpy (names, "+0x", sizeof ("+0x") - 1); | |
3559 | names += sizeof ("+0x") - 1; | |
3560 | bfd_sprintf_vma (abfd, names, p->addend); | |
3561 | names += strlen (names); | |
3562 | } | |
468392fb AM |
3563 | memcpy (names, "@plt", sizeof ("@plt")); |
3564 | names += sizeof ("@plt"); | |
3565 | s++; | |
b9e5796b AM |
3566 | if (abi < 2) |
3567 | { | |
3568 | glink_vma += 8; | |
3569 | if (i >= 0x8000) | |
3570 | glink_vma += 4; | |
3571 | } | |
3572 | else | |
468392fb AM |
3573 | glink_vma += 4; |
3574 | } | |
3575 | count += plt_count; | |
3576 | } | |
90e3cdf2 JJ |
3577 | } |
3578 | ||
c9727e01 | 3579 | done: |
a7535cf3 | 3580 | free (syms); |
90e3cdf2 JJ |
3581 | return count; |
3582 | } | |
5bd4f169 | 3583 | \f |
65f38f15 AM |
3584 | /* The following functions are specific to the ELF linker, while |
3585 | functions above are used generally. Those named ppc64_elf_* are | |
3586 | called by the main ELF linker code. They appear in this file more | |
3587 | or less in the order in which they are called. eg. | |
3588 | ppc64_elf_check_relocs is called early in the link process, | |
3589 | ppc64_elf_finish_dynamic_sections is one of the last functions | |
e86ce104 AM |
3590 | called. |
3591 | ||
3592 | PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that | |
3593 | functions have both a function code symbol and a function descriptor | |
3594 | symbol. A call to foo in a relocatable object file looks like: | |
3595 | ||
3596 | . .text | |
3597 | . x: | |
3598 | . bl .foo | |
3599 | . nop | |
3600 | ||
3601 | The function definition in another object file might be: | |
3602 | ||
3603 | . .section .opd | |
3604 | . foo: .quad .foo | |
3605 | . .quad .TOC.@tocbase | |
3606 | . .quad 0 | |
3607 | . | |
3608 | . .text | |
3609 | . .foo: blr | |
3610 | ||
3611 | When the linker resolves the call during a static link, the branch | |
3612 | unsurprisingly just goes to .foo and the .opd information is unused. | |
3613 | If the function definition is in a shared library, things are a little | |
3614 | different: The call goes via a plt call stub, the opd information gets | |
3615 | copied to the plt, and the linker patches the nop. | |
3616 | ||
3617 | . x: | |
3618 | . bl .foo_stub | |
3619 | . ld 2,40(1) | |
3620 | . | |
3621 | . | |
3622 | . .foo_stub: | |
71a39c98 AM |
3623 | . std 2,40(1) # in practice, the call stub |
3624 | . addis 11,2,Lfoo@toc@ha # is slightly optimized, but | |
3625 | . addi 11,11,Lfoo@toc@l # this is the general idea | |
3626 | . ld 12,0(11) | |
3627 | . ld 2,8(11) | |
3628 | . mtctr 12 | |
3629 | . ld 11,16(11) | |
e86ce104 AM |
3630 | . bctr |
3631 | . | |
3632 | . .section .plt | |
3633 | . Lfoo: reloc (R_PPC64_JMP_SLOT, foo) | |
3634 | ||
3635 | The "reloc ()" notation is supposed to indicate that the linker emits | |
3636 | an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd | |
3637 | copying. | |
3638 | ||
3639 | What are the difficulties here? Well, firstly, the relocations | |
3640 | examined by the linker in check_relocs are against the function code | |
3641 | sym .foo, while the dynamic relocation in the plt is emitted against | |
3642 | the function descriptor symbol, foo. Somewhere along the line, we need | |
3643 | to carefully copy dynamic link information from one symbol to the other. | |
3644 | Secondly, the generic part of the elf linker will make .foo a dynamic | |
3645 | symbol as is normal for most other backends. We need foo dynamic | |
3646 | instead, at least for an application final link. However, when | |
3647 | creating a shared library containing foo, we need to have both symbols | |
3648 | dynamic so that references to .foo are satisfied during the early | |
3649 | stages of linking. Otherwise the linker might decide to pull in a | |
8387904d AM |
3650 | definition from some other object, eg. a static library. |
3651 | ||
3652 | Update: As of August 2004, we support a new convention. Function | |
3653 | calls may use the function descriptor symbol, ie. "bl foo". This | |
3654 | behaves exactly as "bl .foo". */ | |
65f38f15 | 3655 | |
1d483afe | 3656 | /* Of those relocs that might be copied as dynamic relocs, this function |
58ac9f71 AM |
3657 | selects those that must be copied when linking a shared library, |
3658 | even when the symbol is local. */ | |
65f38f15 | 3659 | |
1d483afe AM |
3660 | static int |
3661 | must_be_dyn_reloc (struct bfd_link_info *info, | |
3662 | enum elf_ppc64_reloc_type r_type) | |
3663 | { | |
3664 | switch (r_type) | |
3665 | { | |
3666 | default: | |
3667 | return 1; | |
3668 | ||
3669 | case R_PPC64_REL32: | |
3670 | case R_PPC64_REL64: | |
3671 | case R_PPC64_REL30: | |
3672 | return 0; | |
3673 | ||
3674 | case R_PPC64_TPREL16: | |
3675 | case R_PPC64_TPREL16_LO: | |
3676 | case R_PPC64_TPREL16_HI: | |
3677 | case R_PPC64_TPREL16_HA: | |
3678 | case R_PPC64_TPREL16_DS: | |
3679 | case R_PPC64_TPREL16_LO_DS: | |
f9c6b907 AM |
3680 | case R_PPC64_TPREL16_HIGH: |
3681 | case R_PPC64_TPREL16_HIGHA: | |
1d483afe AM |
3682 | case R_PPC64_TPREL16_HIGHER: |
3683 | case R_PPC64_TPREL16_HIGHERA: | |
3684 | case R_PPC64_TPREL16_HIGHEST: | |
3685 | case R_PPC64_TPREL16_HIGHESTA: | |
3686 | case R_PPC64_TPREL64: | |
3687 | return !info->executable; | |
3688 | } | |
3689 | } | |
65f38f15 | 3690 | |
f4656909 AM |
3691 | /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid |
3692 | copying dynamic variables from a shared lib into an app's dynbss | |
3693 | section, and instead use a dynamic relocation to point into the | |
5d35169e AM |
3694 | shared lib. With code that gcc generates, it's vital that this be |
3695 | enabled; In the PowerPC64 ABI, the address of a function is actually | |
3696 | the address of a function descriptor, which resides in the .opd | |
3697 | section. gcc uses the descriptor directly rather than going via the | |
3698 | GOT as some other ABI's do, which means that initialized function | |
3699 | pointers must reference the descriptor. Thus, a function pointer | |
3700 | initialized to the address of a function in a shared library will | |
3701 | either require a copy reloc, or a dynamic reloc. Using a copy reloc | |
4cc11e76 | 3702 | redefines the function descriptor symbol to point to the copy. This |
5d35169e AM |
3703 | presents a problem as a plt entry for that function is also |
3704 | initialized from the function descriptor symbol and the copy reloc | |
3705 | may not be initialized first. */ | |
a23b6845 | 3706 | #define ELIMINATE_COPY_RELOCS 1 |
f4656909 | 3707 | |
721956f4 | 3708 | /* Section name for stubs is the associated section name plus this |
29942be8 NC |
3709 | string. */ |
3710 | #define STUB_SUFFIX ".stub" | |
721956f4 AM |
3711 | |
3712 | /* Linker stubs. | |
3713 | ppc_stub_long_branch: | |
3714 | Used when a 14 bit branch (or even a 24 bit branch) can't reach its | |
3715 | destination, but a 24 bit branch in a stub section will reach. | |
3716 | . b dest | |
3717 | ||
3718 | ppc_stub_plt_branch: | |
3719 | Similar to the above, but a 24 bit branch in the stub section won't | |
3720 | reach its destination. | |
71a39c98 AM |
3721 | . addis %r11,%r2,xxx@toc@ha |
3722 | . ld %r12,xxx@toc@l(%r11) | |
3723 | . mtctr %r12 | |
721956f4 AM |
3724 | . bctr |
3725 | ||
3726 | ppc_stub_plt_call: | |
2c66dc6c AM |
3727 | Used to call a function in a shared library. If it so happens that |
3728 | the plt entry referenced crosses a 64k boundary, then an extra | |
71a39c98 | 3729 | "addi %r11,%r11,xxx@toc@l" will be inserted before the "mtctr". |
721956f4 | 3730 | . std %r2,40(%r1) |
71a39c98 AM |
3731 | . addis %r11,%r2,xxx@toc@ha |
3732 | . ld %r12,xxx+0@toc@l(%r11) | |
3733 | . mtctr %r12 | |
3734 | . ld %r2,xxx+8@toc@l(%r11) | |
3735 | . ld %r11,xxx+16@toc@l(%r11) | |
721956f4 | 3736 | . bctr |
ad8e1ba5 AM |
3737 | |
3738 | ppc_stub_long_branch and ppc_stub_plt_branch may also have additional | |
3739 | code to adjust the value and save r2 to support multiple toc sections. | |
3740 | A ppc_stub_long_branch with an r2 offset looks like: | |
3741 | . std %r2,40(%r1) | |
3742 | . addis %r2,%r2,off@ha | |
3743 | . addi %r2,%r2,off@l | |
3744 | . b dest | |
3745 | ||
3746 | A ppc_stub_plt_branch with an r2 offset looks like: | |
3747 | . std %r2,40(%r1) | |
71a39c98 AM |
3748 | . addis %r11,%r2,xxx@toc@ha |
3749 | . ld %r12,xxx@toc@l(%r11) | |
ad8e1ba5 AM |
3750 | . addis %r2,%r2,off@ha |
3751 | . addi %r2,%r2,off@l | |
71a39c98 | 3752 | . mtctr %r12 |
ad8e1ba5 | 3753 | . bctr |
ac2df442 AM |
3754 | |
3755 | In cases where the "addis" instruction would add zero, the "addis" is | |
3756 | omitted and following instructions modified slightly in some cases. | |
721956f4 AM |
3757 | */ |
3758 | ||
3759 | enum ppc_stub_type { | |
3760 | ppc_stub_none, | |
3761 | ppc_stub_long_branch, | |
ad8e1ba5 | 3762 | ppc_stub_long_branch_r2off, |
721956f4 | 3763 | ppc_stub_plt_branch, |
ad8e1ba5 | 3764 | ppc_stub_plt_branch_r2off, |
794e51c0 AM |
3765 | ppc_stub_plt_call, |
3766 | ppc_stub_plt_call_r2save | |
721956f4 AM |
3767 | }; |
3768 | ||
3769 | struct ppc_stub_hash_entry { | |
3770 | ||
3771 | /* Base hash table entry structure. */ | |
3772 | struct bfd_hash_entry root; | |
3773 | ||
ad8e1ba5 AM |
3774 | enum ppc_stub_type stub_type; |
3775 | ||
721956f4 AM |
3776 | /* The stub section. */ |
3777 | asection *stub_sec; | |
3778 | ||
3779 | /* Offset within stub_sec of the beginning of this stub. */ | |
3780 | bfd_vma stub_offset; | |
3781 | ||
3782 | /* Given the symbol's value and its section we can determine its final | |
3783 | value when building the stubs (so the stub knows where to jump. */ | |
3784 | bfd_vma target_value; | |
3785 | asection *target_section; | |
3786 | ||
721956f4 AM |
3787 | /* The symbol table entry, if any, that this was derived from. */ |
3788 | struct ppc_link_hash_entry *h; | |
e054468f | 3789 | struct plt_entry *plt_ent; |
721956f4 AM |
3790 | |
3791 | /* Where this stub is being called from, or, in the case of combined | |
3792 | stub sections, the first input section in the group. */ | |
3793 | asection *id_sec; | |
6911b7dc AM |
3794 | |
3795 | /* Symbol st_other. */ | |
3796 | unsigned char other; | |
721956f4 AM |
3797 | }; |
3798 | ||
3799 | struct ppc_branch_hash_entry { | |
3800 | ||
3801 | /* Base hash table entry structure. */ | |
3802 | struct bfd_hash_entry root; | |
3803 | ||
c456f082 | 3804 | /* Offset within branch lookup table. */ |
721956f4 AM |
3805 | unsigned int offset; |
3806 | ||
3807 | /* Generation marker. */ | |
3808 | unsigned int iter; | |
3809 | }; | |
65f38f15 | 3810 | |
19e08130 AM |
3811 | /* Used to track dynamic relocations for local symbols. */ |
3812 | struct ppc_dyn_relocs | |
3813 | { | |
3814 | struct ppc_dyn_relocs *next; | |
3815 | ||
3816 | /* The input section of the reloc. */ | |
3817 | asection *sec; | |
3818 | ||
3819 | /* Total number of relocs copied for the input section. */ | |
3820 | unsigned int count : 31; | |
3821 | ||
3822 | /* Whether this entry is for STT_GNU_IFUNC symbols. */ | |
3823 | unsigned int ifunc : 1; | |
3824 | }; | |
3825 | ||
65f38f15 AM |
3826 | struct ppc_link_hash_entry |
3827 | { | |
3828 | struct elf_link_hash_entry elf; | |
3829 | ||
b3fac117 AM |
3830 | union { |
3831 | /* A pointer to the most recently used stub hash entry against this | |
3832 | symbol. */ | |
3833 | struct ppc_stub_hash_entry *stub_cache; | |
3834 | ||
3835 | /* A pointer to the next symbol starting with a '.' */ | |
3836 | struct ppc_link_hash_entry *next_dot_sym; | |
3837 | } u; | |
721956f4 | 3838 | |
65f38f15 | 3839 | /* Track dynamic relocs copied for this symbol. */ |
6061a67d | 3840 | struct elf_dyn_relocs *dyn_relocs; |
e86ce104 | 3841 | |
721956f4 | 3842 | /* Link between function code and descriptor symbols. */ |
34814b9f | 3843 | struct ppc_link_hash_entry *oh; |
721956f4 | 3844 | |
e86ce104 AM |
3845 | /* Flag function code and descriptor symbols. */ |
3846 | unsigned int is_func:1; | |
3847 | unsigned int is_func_descriptor:1; | |
908b32fc | 3848 | unsigned int fake:1; |
411e1bfb | 3849 | |
c5614fa4 AM |
3850 | /* Whether global opd/toc sym has been adjusted or not. |
3851 | After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag | |
3852 | should be set for all globals defined in any opd/toc section. */ | |
754021d0 AM |
3853 | unsigned int adjust_done:1; |
3854 | ||
99877b66 AM |
3855 | /* Set if we twiddled this symbol to weak at some stage. */ |
3856 | unsigned int was_undefined:1; | |
3857 | ||
411e1bfb | 3858 | /* Contexts in which symbol is used in the GOT (or TOC). |
e7b938ca AM |
3859 | TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the |
3860 | corresponding relocs are encountered during check_relocs. | |
3861 | tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to | |
3862 | indicate the corresponding GOT entry type is not needed. | |
3863 | tls_optimize may also set TLS_TPRELGD when a GD reloc turns into | |
3864 | a TPREL one. We use a separate flag rather than setting TPREL | |
3865 | just for convenience in distinguishing the two cases. */ | |
3866 | #define TLS_GD 1 /* GD reloc. */ | |
3867 | #define TLS_LD 2 /* LD reloc. */ | |
3868 | #define TLS_TPREL 4 /* TPREL reloc, => IE. */ | |
3869 | #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */ | |
3870 | #define TLS_TLS 16 /* Any TLS reloc. */ | |
3871 | #define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */ | |
3872 | #define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */ | |
e054468f | 3873 | #define PLT_IFUNC 128 /* STT_GNU_IFUNC. */ |
f961d9dd | 3874 | unsigned char tls_mask; |
65f38f15 AM |
3875 | }; |
3876 | ||
3877 | /* ppc64 ELF linker hash table. */ | |
3878 | ||
3879 | struct ppc_link_hash_table | |
3880 | { | |
3881 | struct elf_link_hash_table elf; | |
3882 | ||
721956f4 AM |
3883 | /* The stub hash table. */ |
3884 | struct bfd_hash_table stub_hash_table; | |
3885 | ||
3886 | /* Another hash table for plt_branch stubs. */ | |
3887 | struct bfd_hash_table branch_hash_table; | |
3888 | ||
3b421ab3 AM |
3889 | /* Hash table for function prologue tocsave. */ |
3890 | htab_t tocsave_htab; | |
3891 | ||
e7d1c40c AM |
3892 | /* Various options and other info passed from the linker. */ |
3893 | struct ppc64_elf_params *params; | |
721956f4 AM |
3894 | |
3895 | /* Array to keep track of which stub sections have been created, and | |
3896 | information on stub grouping. */ | |
3897 | struct map_stub { | |
3898 | /* This is the section to which stubs in the group will be attached. */ | |
3899 | asection *link_sec; | |
3900 | /* The stub section. */ | |
3901 | asection *stub_sec; | |
ad8e1ba5 AM |
3902 | /* Along with elf_gp, specifies the TOC pointer used in this group. */ |
3903 | bfd_vma toc_off; | |
721956f4 AM |
3904 | } *stub_group; |
3905 | ||
ad8e1ba5 AM |
3906 | /* Temp used when calculating TOC pointers. */ |
3907 | bfd_vma toc_curr; | |
bf102f86 AM |
3908 | bfd *toc_bfd; |
3909 | asection *toc_first_sec; | |
ad8e1ba5 | 3910 | |
8f3bab57 AM |
3911 | /* Highest input section id. */ |
3912 | int top_id; | |
3913 | ||
734b6cf9 AM |
3914 | /* Highest output section index. */ |
3915 | int top_index; | |
3916 | ||
b3fac117 AM |
3917 | /* Used when adding symbols. */ |
3918 | struct ppc_link_hash_entry *dot_syms; | |
3919 | ||
734b6cf9 AM |
3920 | /* List of input sections for each output section. */ |
3921 | asection **input_list; | |
721956f4 | 3922 | |
33e44f2e | 3923 | /* Shortcuts to get to dynamic linker sections. */ |
4ce794b7 AM |
3924 | asection *dynbss; |
3925 | asection *relbss; | |
3926 | asection *glink; | |
82bd7b59 | 3927 | asection *sfpr; |
4ce794b7 AM |
3928 | asection *brlt; |
3929 | asection *relbrlt; | |
58d180e8 | 3930 | asection *glink_eh_frame; |
ec338859 | 3931 | |
8387904d AM |
3932 | /* Shortcut to .__tls_get_addr and __tls_get_addr. */ |
3933 | struct ppc_link_hash_entry *tls_get_addr; | |
3934 | struct ppc_link_hash_entry *tls_get_addr_fd; | |
411e1bfb | 3935 | |
927be08e AM |
3936 | /* The size of reliplt used by got entry relocs. */ |
3937 | bfd_size_type got_reli_size; | |
3938 | ||
9b5ecbd0 | 3939 | /* Statistics. */ |
794e51c0 | 3940 | unsigned long stub_count[ppc_stub_plt_call_r2save]; |
9b5ecbd0 | 3941 | |
ee75fd95 AM |
3942 | /* Number of stubs against global syms. */ |
3943 | unsigned long stub_globals; | |
3944 | ||
ee67d69a AM |
3945 | /* Set if we're linking code with function descriptors. */ |
3946 | unsigned int opd_abi:1; | |
3947 | ||
4c52953f | 3948 | /* Support for multiple toc sections. */ |
33c0ec9d | 3949 | unsigned int do_multi_toc:1; |
4c52953f | 3950 | unsigned int multi_toc_needed:1; |
927be08e | 3951 | unsigned int second_toc_pass:1; |
67f0cbdb | 3952 | unsigned int do_toc_opt:1; |
4c52953f | 3953 | |
5d1634d7 | 3954 | /* Set on error. */ |
99877b66 | 3955 | unsigned int stub_error:1; |
721956f4 | 3956 | |
7d9616d7 | 3957 | /* Temp used by ppc64_elf_process_dot_syms. */ |
99877b66 | 3958 | unsigned int twiddled_syms:1; |
721956f4 AM |
3959 | |
3960 | /* Incremented every time we size stubs. */ | |
3961 | unsigned int stub_iteration; | |
5d1634d7 | 3962 | |
87d72d41 AM |
3963 | /* Small local sym cache. */ |
3964 | struct sym_cache sym_cache; | |
65f38f15 AM |
3965 | }; |
3966 | ||
4c52953f AM |
3967 | /* Rename some of the generic section flags to better document how they |
3968 | are used here. */ | |
b0dddeec AM |
3969 | |
3970 | /* Nonzero if this section has TLS related relocations. */ | |
3971 | #define has_tls_reloc sec_flg0 | |
3972 | ||
3973 | /* Nonzero if this section has a call to __tls_get_addr. */ | |
3974 | #define has_tls_get_addr_call sec_flg1 | |
3975 | ||
3976 | /* Nonzero if this section has any toc or got relocs. */ | |
3977 | #define has_toc_reloc sec_flg2 | |
3978 | ||
3979 | /* Nonzero if this section has a call to another section that uses | |
3980 | the toc or got. */ | |
d77c8a4b | 3981 | #define makes_toc_func_call sec_flg3 |
b0dddeec AM |
3982 | |
3983 | /* Recursion protection when determining above flag. */ | |
d77c8a4b | 3984 | #define call_check_in_progress sec_flg4 |
70cc837d | 3985 | #define call_check_done sec_flg5 |
4c52953f | 3986 | |
65f38f15 AM |
3987 | /* Get the ppc64 ELF linker hash table from a link_info structure. */ |
3988 | ||
3989 | #define ppc_hash_table(p) \ | |
4dfe6ac6 NC |
3990 | (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \ |
3991 | == PPC64_ELF_DATA ? ((struct ppc_link_hash_table *) ((p)->hash)) : NULL) | |
65f38f15 | 3992 | |
721956f4 AM |
3993 | #define ppc_stub_hash_lookup(table, string, create, copy) \ |
3994 | ((struct ppc_stub_hash_entry *) \ | |
3995 | bfd_hash_lookup ((table), (string), (create), (copy))) | |
3996 | ||
3997 | #define ppc_branch_hash_lookup(table, string, create, copy) \ | |
3998 | ((struct ppc_branch_hash_entry *) \ | |
3999 | bfd_hash_lookup ((table), (string), (create), (copy))) | |
4000 | ||
4001 | /* Create an entry in the stub hash table. */ | |
4002 | ||
4003 | static struct bfd_hash_entry * | |
4ce794b7 AM |
4004 | stub_hash_newfunc (struct bfd_hash_entry *entry, |
4005 | struct bfd_hash_table *table, | |
4006 | const char *string) | |
721956f4 AM |
4007 | { |
4008 | /* Allocate the structure if it has not already been allocated by a | |
4009 | subclass. */ | |
4010 | if (entry == NULL) | |
4011 | { | |
4012 | entry = bfd_hash_allocate (table, sizeof (struct ppc_stub_hash_entry)); | |
4013 | if (entry == NULL) | |
4014 | return entry; | |
4015 | } | |
4016 | ||
4017 | /* Call the allocation method of the superclass. */ | |
4018 | entry = bfd_hash_newfunc (entry, table, string); | |
4019 | if (entry != NULL) | |
4020 | { | |
4021 | struct ppc_stub_hash_entry *eh; | |
4022 | ||
4023 | /* Initialize the local fields. */ | |
4024 | eh = (struct ppc_stub_hash_entry *) entry; | |
ad8e1ba5 | 4025 | eh->stub_type = ppc_stub_none; |
721956f4 AM |
4026 | eh->stub_sec = NULL; |
4027 | eh->stub_offset = 0; | |
4028 | eh->target_value = 0; | |
4029 | eh->target_section = NULL; | |
721956f4 | 4030 | eh->h = NULL; |
6911b7dc | 4031 | eh->plt_ent = NULL; |
721956f4 | 4032 | eh->id_sec = NULL; |
6911b7dc | 4033 | eh->other = 0; |
721956f4 AM |
4034 | } |
4035 | ||
4036 | return entry; | |
4037 | } | |
4038 | ||
4039 | /* Create an entry in the branch hash table. */ | |
4040 | ||
4041 | static struct bfd_hash_entry * | |
4ce794b7 AM |
4042 | branch_hash_newfunc (struct bfd_hash_entry *entry, |
4043 | struct bfd_hash_table *table, | |
4044 | const char *string) | |
721956f4 AM |
4045 | { |
4046 | /* Allocate the structure if it has not already been allocated by a | |
4047 | subclass. */ | |
4048 | if (entry == NULL) | |
4049 | { | |
4050 | entry = bfd_hash_allocate (table, sizeof (struct ppc_branch_hash_entry)); | |
4051 | if (entry == NULL) | |
4052 | return entry; | |
4053 | } | |
4054 | ||
4055 | /* Call the allocation method of the superclass. */ | |
4056 | entry = bfd_hash_newfunc (entry, table, string); | |
4057 | if (entry != NULL) | |
4058 | { | |
4059 | struct ppc_branch_hash_entry *eh; | |
4060 | ||
4061 | /* Initialize the local fields. */ | |
4062 | eh = (struct ppc_branch_hash_entry *) entry; | |
4063 | eh->offset = 0; | |
4064 | eh->iter = 0; | |
4065 | } | |
4066 | ||
4067 | return entry; | |
4068 | } | |
4069 | ||
65f38f15 AM |
4070 | /* Create an entry in a ppc64 ELF linker hash table. */ |
4071 | ||
4072 | static struct bfd_hash_entry * | |
4ce794b7 AM |
4073 | link_hash_newfunc (struct bfd_hash_entry *entry, |
4074 | struct bfd_hash_table *table, | |
4075 | const char *string) | |
65f38f15 AM |
4076 | { |
4077 | /* Allocate the structure if it has not already been allocated by a | |
4078 | subclass. */ | |
4079 | if (entry == NULL) | |
4080 | { | |
4081 | entry = bfd_hash_allocate (table, sizeof (struct ppc_link_hash_entry)); | |
4082 | if (entry == NULL) | |
4083 | return entry; | |
4084 | } | |
4085 | ||
4086 | /* Call the allocation method of the superclass. */ | |
4087 | entry = _bfd_elf_link_hash_newfunc (entry, table, string); | |
4088 | if (entry != NULL) | |
4089 | { | |
4090 | struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) entry; | |
4091 | ||
b3fac117 | 4092 | memset (&eh->u.stub_cache, 0, |
908b32fc | 4093 | (sizeof (struct ppc_link_hash_entry) |
b3fac117 AM |
4094 | - offsetof (struct ppc_link_hash_entry, u.stub_cache))); |
4095 | ||
4096 | /* When making function calls, old ABI code references function entry | |
4097 | points (dot symbols), while new ABI code references the function | |
4098 | descriptor symbol. We need to make any combination of reference and | |
4099 | definition work together, without breaking archive linking. | |
4100 | ||
4101 | For a defined function "foo" and an undefined call to "bar": | |
4102 | An old object defines "foo" and ".foo", references ".bar" (possibly | |
4103 | "bar" too). | |
4104 | A new object defines "foo" and references "bar". | |
4105 | ||
4106 | A new object thus has no problem with its undefined symbols being | |
4107 | satisfied by definitions in an old object. On the other hand, the | |
4108 | old object won't have ".bar" satisfied by a new object. | |
4109 | ||
4110 | Keep a list of newly added dot-symbols. */ | |
4111 | ||
4112 | if (string[0] == '.') | |
4113 | { | |
4114 | struct ppc_link_hash_table *htab; | |
4115 | ||
4116 | htab = (struct ppc_link_hash_table *) table; | |
4117 | eh->u.next_dot_sym = htab->dot_syms; | |
4118 | htab->dot_syms = eh; | |
4119 | } | |
65f38f15 AM |
4120 | } |
4121 | ||
4122 | return entry; | |
4123 | } | |
4124 | ||
3b421ab3 AM |
4125 | struct tocsave_entry { |
4126 | asection *sec; | |
4127 | bfd_vma offset; | |
4128 | }; | |
4129 | ||
4130 | static hashval_t | |
4131 | tocsave_htab_hash (const void *p) | |
4132 | { | |
4133 | const struct tocsave_entry *e = (const struct tocsave_entry *) p; | |
4134 | return ((bfd_vma)(intptr_t) e->sec ^ e->offset) >> 3; | |
4135 | } | |
4136 | ||
4137 | static int | |
4138 | tocsave_htab_eq (const void *p1, const void *p2) | |
4139 | { | |
4140 | const struct tocsave_entry *e1 = (const struct tocsave_entry *) p1; | |
4141 | const struct tocsave_entry *e2 = (const struct tocsave_entry *) p2; | |
4142 | return e1->sec == e2->sec && e1->offset == e2->offset; | |
4143 | } | |
4144 | ||
65f38f15 AM |
4145 | /* Create a ppc64 ELF linker hash table. */ |
4146 | ||
4147 | static struct bfd_link_hash_table * | |
4ce794b7 | 4148 | ppc64_elf_link_hash_table_create (bfd *abfd) |
65f38f15 AM |
4149 | { |
4150 | struct ppc_link_hash_table *htab; | |
4151 | bfd_size_type amt = sizeof (struct ppc_link_hash_table); | |
4152 | ||
4ce794b7 | 4153 | htab = bfd_zmalloc (amt); |
65f38f15 AM |
4154 | if (htab == NULL) |
4155 | return NULL; | |
4156 | ||
66eb6687 | 4157 | if (!_bfd_elf_link_hash_table_init (&htab->elf, abfd, link_hash_newfunc, |
4dfe6ac6 NC |
4158 | sizeof (struct ppc_link_hash_entry), |
4159 | PPC64_ELF_DATA)) | |
65f38f15 | 4160 | { |
e2d34d7d | 4161 | free (htab); |
65f38f15 AM |
4162 | return NULL; |
4163 | } | |
4164 | ||
721956f4 | 4165 | /* Init the stub hash table too. */ |
66eb6687 AM |
4166 | if (!bfd_hash_table_init (&htab->stub_hash_table, stub_hash_newfunc, |
4167 | sizeof (struct ppc_stub_hash_entry))) | |
2915c55b JK |
4168 | { |
4169 | _bfd_elf_link_hash_table_free ((struct bfd_link_hash_table *) htab); | |
4170 | return NULL; | |
4171 | } | |
721956f4 AM |
4172 | |
4173 | /* And the branch hash table. */ | |
66eb6687 AM |
4174 | if (!bfd_hash_table_init (&htab->branch_hash_table, branch_hash_newfunc, |
4175 | sizeof (struct ppc_branch_hash_entry))) | |
2915c55b JK |
4176 | { |
4177 | bfd_hash_table_free (&htab->stub_hash_table); | |
4178 | _bfd_elf_link_hash_table_free ((struct bfd_link_hash_table *) htab); | |
4179 | return NULL; | |
4180 | } | |
721956f4 | 4181 | |
3b421ab3 AM |
4182 | htab->tocsave_htab = htab_try_create (1024, |
4183 | tocsave_htab_hash, | |
4184 | tocsave_htab_eq, | |
4185 | NULL); | |
4186 | if (htab->tocsave_htab == NULL) | |
2915c55b JK |
4187 | { |
4188 | bfd_hash_table_free (&htab->branch_hash_table); | |
4189 | bfd_hash_table_free (&htab->stub_hash_table); | |
4190 | _bfd_elf_link_hash_table_free ((struct bfd_link_hash_table *) htab); | |
4191 | return NULL; | |
4192 | } | |
3b421ab3 | 4193 | |
3254fd24 AM |
4194 | /* Initializing two fields of the union is just cosmetic. We really |
4195 | only care about glist, but when compiled on a 32-bit host the | |
4196 | bfd_vma fields are larger. Setting the bfd_vma to zero makes | |
4197 | debugger inspection of these fields look nicer. */ | |
a6aa5195 AM |
4198 | htab->elf.init_got_refcount.refcount = 0; |
4199 | htab->elf.init_got_refcount.glist = NULL; | |
4200 | htab->elf.init_plt_refcount.refcount = 0; | |
4201 | htab->elf.init_plt_refcount.glist = NULL; | |
4202 | htab->elf.init_got_offset.offset = 0; | |
4203 | htab->elf.init_got_offset.glist = NULL; | |
4204 | htab->elf.init_plt_offset.offset = 0; | |
4205 | htab->elf.init_plt_offset.glist = NULL; | |
3254fd24 | 4206 | |
65f38f15 AM |
4207 | return &htab->elf.root; |
4208 | } | |
4209 | ||
721956f4 AM |
4210 | /* Free the derived linker hash table. */ |
4211 | ||
4212 | static void | |
4ce794b7 | 4213 | ppc64_elf_link_hash_table_free (struct bfd_link_hash_table *hash) |
721956f4 | 4214 | { |
3b421ab3 | 4215 | struct ppc_link_hash_table *htab = (struct ppc_link_hash_table *) hash; |
721956f4 | 4216 | |
3b421ab3 AM |
4217 | bfd_hash_table_free (&htab->stub_hash_table); |
4218 | bfd_hash_table_free (&htab->branch_hash_table); | |
4219 | if (htab->tocsave_htab) | |
4220 | htab_delete (htab->tocsave_htab); | |
9f7c3e5e | 4221 | _bfd_elf_link_hash_table_free (hash); |
721956f4 AM |
4222 | } |
4223 | ||
bfeb4a28 AM |
4224 | /* Create sections for linker generated code. */ |
4225 | ||
4226 | static bfd_boolean | |
4227 | create_linkage_sections (bfd *dynobj, struct bfd_link_info *info) | |
4228 | { | |
4229 | struct ppc_link_hash_table *htab; | |
4230 | flagword flags; | |
4231 | ||
4232 | htab = ppc_hash_table (info); | |
4233 | ||
4234 | /* Create .sfpr for code to save and restore fp regs. */ | |
4235 | flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY | |
4236 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
4237 | htab->sfpr = bfd_make_section_anyway_with_flags (dynobj, ".sfpr", | |
4238 | flags); | |
4239 | if (htab->sfpr == NULL | |
4240 | || ! bfd_set_section_alignment (dynobj, htab->sfpr, 2)) | |
4241 | return FALSE; | |
4242 | ||
4243 | /* Create .glink for lazy dynamic linking support. */ | |
4244 | htab->glink = bfd_make_section_anyway_with_flags (dynobj, ".glink", | |
4245 | flags); | |
4246 | if (htab->glink == NULL | |
4247 | || ! bfd_set_section_alignment (dynobj, htab->glink, 3)) | |
4248 | return FALSE; | |
4249 | ||
4250 | if (!info->no_ld_generated_unwind_info) | |
4251 | { | |
4252 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS | |
4253 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
4254 | htab->glink_eh_frame = bfd_make_section_anyway_with_flags (dynobj, | |
4255 | ".eh_frame", | |
4256 | flags); | |
4257 | if (htab->glink_eh_frame == NULL | |
4258 | || !bfd_set_section_alignment (dynobj, htab->glink_eh_frame, 2)) | |
4259 | return FALSE; | |
4260 | } | |
4261 | ||
4262 | flags = SEC_ALLOC | SEC_LINKER_CREATED; | |
33e44f2e AM |
4263 | htab->elf.iplt = bfd_make_section_anyway_with_flags (dynobj, ".iplt", flags); |
4264 | if (htab->elf.iplt == NULL | |
4265 | || ! bfd_set_section_alignment (dynobj, htab->elf.iplt, 3)) | |
bfeb4a28 AM |
4266 | return FALSE; |
4267 | ||
4268 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | |
4269 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
33e44f2e AM |
4270 | htab->elf.irelplt |
4271 | = bfd_make_section_anyway_with_flags (dynobj, ".rela.iplt", flags); | |
4272 | if (htab->elf.irelplt == NULL | |
4273 | || ! bfd_set_section_alignment (dynobj, htab->elf.irelplt, 3)) | |
bfeb4a28 AM |
4274 | return FALSE; |
4275 | ||
4276 | /* Create branch lookup table for plt_branch stubs. */ | |
4277 | flags = (SEC_ALLOC | SEC_LOAD | |
4278 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
4279 | htab->brlt = bfd_make_section_anyway_with_flags (dynobj, ".branch_lt", | |
4280 | flags); | |
4281 | if (htab->brlt == NULL | |
4282 | || ! bfd_set_section_alignment (dynobj, htab->brlt, 3)) | |
4283 | return FALSE; | |
4284 | ||
4285 | if (!info->shared) | |
4286 | return TRUE; | |
4287 | ||
4288 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | |
4289 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
4290 | htab->relbrlt = bfd_make_section_anyway_with_flags (dynobj, | |
4291 | ".rela.branch_lt", | |
4292 | flags); | |
4293 | if (htab->relbrlt == NULL | |
4294 | || ! bfd_set_section_alignment (dynobj, htab->relbrlt, 3)) | |
4295 | return FALSE; | |
4296 | ||
4297 | return TRUE; | |
4298 | } | |
4299 | ||
e717da7e AM |
4300 | /* Satisfy the ELF linker by filling in some fields in our fake bfd. */ |
4301 | ||
bfeb4a28 | 4302 | bfd_boolean |
e7d1c40c AM |
4303 | ppc64_elf_init_stub_bfd (struct bfd_link_info *info, |
4304 | struct ppc64_elf_params *params) | |
e717da7e AM |
4305 | { |
4306 | struct ppc_link_hash_table *htab; | |
4307 | ||
e7d1c40c | 4308 | elf_elfheader (params->stub_bfd)->e_ident[EI_CLASS] = ELFCLASS64; |
e717da7e AM |
4309 | |
4310 | /* Always hook our dynamic sections into the first bfd, which is the | |
4311 | linker created stub bfd. This ensures that the GOT header is at | |
4312 | the start of the output TOC section. */ | |
4313 | htab = ppc_hash_table (info); | |
4dfe6ac6 | 4314 | if (htab == NULL) |
bfeb4a28 | 4315 | return FALSE; |
e7d1c40c AM |
4316 | htab->elf.dynobj = params->stub_bfd; |
4317 | htab->params = params; | |
bfeb4a28 AM |
4318 | |
4319 | if (info->relocatable) | |
4320 | return TRUE; | |
4321 | ||
4322 | return create_linkage_sections (htab->elf.dynobj, info); | |
e717da7e AM |
4323 | } |
4324 | ||
721956f4 AM |
4325 | /* Build a name for an entry in the stub hash table. */ |
4326 | ||
4327 | static char * | |
4ce794b7 AM |
4328 | ppc_stub_name (const asection *input_section, |
4329 | const asection *sym_sec, | |
4330 | const struct ppc_link_hash_entry *h, | |
4331 | const Elf_Internal_Rela *rel) | |
721956f4 AM |
4332 | { |
4333 | char *stub_name; | |
bcaa2f82 | 4334 | ssize_t len; |
721956f4 AM |
4335 | |
4336 | /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31 | |
4337 | offsets from a sym as a branch target? In fact, we could | |
4338 | probably assume the addend is always zero. */ | |
4339 | BFD_ASSERT (((int) rel->r_addend & 0xffffffff) == rel->r_addend); | |
4340 | ||
4341 | if (h) | |
4342 | { | |
4343 | len = 8 + 1 + strlen (h->elf.root.root.string) + 1 + 8 + 1; | |
4344 | stub_name = bfd_malloc (len); | |
46de2a7c AM |
4345 | if (stub_name == NULL) |
4346 | return stub_name; | |
4347 | ||
bcaa2f82 AM |
4348 | len = sprintf (stub_name, "%08x.%s+%x", |
4349 | input_section->id & 0xffffffff, | |
4350 | h->elf.root.root.string, | |
4351 | (int) rel->r_addend & 0xffffffff); | |
721956f4 AM |
4352 | } |
4353 | else | |
4354 | { | |
ad8e1ba5 | 4355 | len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1; |
721956f4 | 4356 | stub_name = bfd_malloc (len); |
46de2a7c AM |
4357 | if (stub_name == NULL) |
4358 | return stub_name; | |
4359 | ||
bcaa2f82 AM |
4360 | len = sprintf (stub_name, "%08x.%x:%x+%x", |
4361 | input_section->id & 0xffffffff, | |
4362 | sym_sec->id & 0xffffffff, | |
4363 | (int) ELF64_R_SYM (rel->r_info) & 0xffffffff, | |
4364 | (int) rel->r_addend & 0xffffffff); | |
721956f4 | 4365 | } |
bcaa2f82 | 4366 | if (len > 2 && stub_name[len - 2] == '+' && stub_name[len - 1] == '0') |
ee75fd95 | 4367 | stub_name[len - 2] = 0; |
721956f4 AM |
4368 | return stub_name; |
4369 | } | |
4370 | ||
4371 | /* Look up an entry in the stub hash. Stub entries are cached because | |
4372 | creating the stub name takes a bit of time. */ | |
4373 | ||
4374 | static struct ppc_stub_hash_entry * | |
4ce794b7 AM |
4375 | ppc_get_stub_entry (const asection *input_section, |
4376 | const asection *sym_sec, | |
039b3fef | 4377 | struct ppc_link_hash_entry *h, |
4ce794b7 AM |
4378 | const Elf_Internal_Rela *rel, |
4379 | struct ppc_link_hash_table *htab) | |
721956f4 AM |
4380 | { |
4381 | struct ppc_stub_hash_entry *stub_entry; | |
721956f4 AM |
4382 | const asection *id_sec; |
4383 | ||
4384 | /* If this input section is part of a group of sections sharing one | |
4385 | stub section, then use the id of the first section in the group. | |
4386 | Stub names need to include a section id, as there may well be | |
4387 | more than one stub used to reach say, printf, and we need to | |
4388 | distinguish between them. */ | |
4389 | id_sec = htab->stub_group[input_section->id].link_sec; | |
4390 | ||
b3fac117 AM |
4391 | if (h != NULL && h->u.stub_cache != NULL |
4392 | && h->u.stub_cache->h == h | |
4393 | && h->u.stub_cache->id_sec == id_sec) | |
721956f4 | 4394 | { |
b3fac117 | 4395 | stub_entry = h->u.stub_cache; |
721956f4 AM |
4396 | } |
4397 | else | |
4398 | { | |
4399 | char *stub_name; | |
4400 | ||
4401 | stub_name = ppc_stub_name (id_sec, sym_sec, h, rel); | |
4402 | if (stub_name == NULL) | |
4403 | return NULL; | |
4404 | ||
4405 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, | |
b34976b6 | 4406 | stub_name, FALSE, FALSE); |
721956f4 | 4407 | if (h != NULL) |
b3fac117 | 4408 | h->u.stub_cache = stub_entry; |
721956f4 AM |
4409 | |
4410 | free (stub_name); | |
4411 | } | |
4412 | ||
4413 | return stub_entry; | |
4414 | } | |
4415 | ||
4416 | /* Add a new stub entry to the stub hash. Not all fields of the new | |
4417 | stub entry are initialised. */ | |
4418 | ||
4419 | static struct ppc_stub_hash_entry * | |
4ce794b7 AM |
4420 | ppc_add_stub (const char *stub_name, |
4421 | asection *section, | |
25f53a85 | 4422 | struct bfd_link_info *info) |
721956f4 | 4423 | { |
25f53a85 | 4424 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
721956f4 AM |
4425 | asection *link_sec; |
4426 | asection *stub_sec; | |
4427 | struct ppc_stub_hash_entry *stub_entry; | |
4428 | ||
4429 | link_sec = htab->stub_group[section->id].link_sec; | |
4430 | stub_sec = htab->stub_group[section->id].stub_sec; | |
4431 | if (stub_sec == NULL) | |
4432 | { | |
4433 | stub_sec = htab->stub_group[link_sec->id].stub_sec; | |
4434 | if (stub_sec == NULL) | |
4435 | { | |
d4c88bbb | 4436 | size_t namelen; |
721956f4 AM |
4437 | bfd_size_type len; |
4438 | char *s_name; | |
4439 | ||
d4c88bbb AM |
4440 | namelen = strlen (link_sec->name); |
4441 | len = namelen + sizeof (STUB_SUFFIX); | |
e7d1c40c | 4442 | s_name = bfd_alloc (htab->params->stub_bfd, len); |
721956f4 AM |
4443 | if (s_name == NULL) |
4444 | return NULL; | |
4445 | ||
d4c88bbb AM |
4446 | memcpy (s_name, link_sec->name, namelen); |
4447 | memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX)); | |
e7d1c40c | 4448 | stub_sec = (*htab->params->add_stub_section) (s_name, link_sec); |
721956f4 AM |
4449 | if (stub_sec == NULL) |
4450 | return NULL; | |
4451 | htab->stub_group[link_sec->id].stub_sec = stub_sec; | |
4452 | } | |
4453 | htab->stub_group[section->id].stub_sec = stub_sec; | |
4454 | } | |
4455 | ||
4456 | /* Enter this entry into the linker stub hash table. */ | |
4457 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, stub_name, | |
b34976b6 | 4458 | TRUE, FALSE); |
721956f4 AM |
4459 | if (stub_entry == NULL) |
4460 | { | |
8de848d8 | 4461 | info->callbacks->einfo (_("%P: %B: cannot create stub entry %s\n"), |
25f53a85 | 4462 | section->owner, stub_name); |
721956f4 AM |
4463 | return NULL; |
4464 | } | |
4465 | ||
4466 | stub_entry->stub_sec = stub_sec; | |
4467 | stub_entry->stub_offset = 0; | |
4468 | stub_entry->id_sec = link_sec; | |
4469 | return stub_entry; | |
4470 | } | |
4471 | ||
e717da7e AM |
4472 | /* Create .got and .rela.got sections in ABFD, and .got in dynobj if |
4473 | not already done. */ | |
65f38f15 | 4474 | |
b34976b6 | 4475 | static bfd_boolean |
e717da7e | 4476 | create_got_section (bfd *abfd, struct bfd_link_info *info) |
65f38f15 | 4477 | { |
e717da7e AM |
4478 | asection *got, *relgot; |
4479 | flagword flags; | |
4480 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
65f38f15 | 4481 | |
0c8d6e5c | 4482 | if (!is_ppc64_elf (abfd)) |
0ffa91dd | 4483 | return FALSE; |
4dfe6ac6 NC |
4484 | if (htab == NULL) |
4485 | return FALSE; | |
0ffa91dd | 4486 | |
33e44f2e AM |
4487 | if (!htab->elf.sgot |
4488 | && !_bfd_elf_create_got_section (htab->elf.dynobj, info)) | |
4489 | return FALSE; | |
e717da7e AM |
4490 | |
4491 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY | |
4492 | | SEC_LINKER_CREATED); | |
4493 | ||
c456f082 | 4494 | got = bfd_make_section_anyway_with_flags (abfd, ".got", flags); |
e717da7e | 4495 | if (!got |
e717da7e AM |
4496 | || !bfd_set_section_alignment (abfd, got, 3)) |
4497 | return FALSE; | |
65f38f15 | 4498 | |
c456f082 AM |
4499 | relgot = bfd_make_section_anyway_with_flags (abfd, ".rela.got", |
4500 | flags | SEC_READONLY); | |
e717da7e | 4501 | if (!relgot |
e717da7e | 4502 | || ! bfd_set_section_alignment (abfd, relgot, 3)) |
b34976b6 | 4503 | return FALSE; |
e717da7e AM |
4504 | |
4505 | ppc64_elf_tdata (abfd)->got = got; | |
4506 | ppc64_elf_tdata (abfd)->relgot = relgot; | |
b34976b6 | 4507 | return TRUE; |
65f38f15 | 4508 | } |
5bd4f169 | 4509 | |
82bd7b59 | 4510 | /* Create the dynamic sections, and set up shortcuts. */ |
5bd4f169 | 4511 | |
b34976b6 | 4512 | static bfd_boolean |
4ce794b7 | 4513 | ppc64_elf_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info) |
5bd4f169 | 4514 | { |
65f38f15 | 4515 | struct ppc_link_hash_table *htab; |
5bd4f169 | 4516 | |
65f38f15 | 4517 | if (!_bfd_elf_create_dynamic_sections (dynobj, info)) |
b34976b6 | 4518 | return FALSE; |
65f38f15 | 4519 | |
e717da7e | 4520 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
4521 | if (htab == NULL) |
4522 | return FALSE; | |
4523 | ||
3d4d4302 | 4524 | htab->dynbss = bfd_get_linker_section (dynobj, ".dynbss"); |
65f38f15 | 4525 | if (!info->shared) |
3d4d4302 | 4526 | htab->relbss = bfd_get_linker_section (dynobj, ".rela.bss"); |
65f38f15 | 4527 | |
33e44f2e | 4528 | if (!htab->elf.sgot || !htab->elf.splt || !htab->elf.srelplt || !htab->dynbss |
4ce794b7 | 4529 | || (!info->shared && !htab->relbss)) |
65f38f15 AM |
4530 | abort (); |
4531 | ||
b34976b6 | 4532 | return TRUE; |
5bd4f169 AM |
4533 | } |
4534 | ||
b31867b6 AM |
4535 | /* Follow indirect and warning symbol links. */ |
4536 | ||
4537 | static inline struct bfd_link_hash_entry * | |
4538 | follow_link (struct bfd_link_hash_entry *h) | |
4539 | { | |
4540 | while (h->type == bfd_link_hash_indirect | |
4541 | || h->type == bfd_link_hash_warning) | |
4542 | h = h->u.i.link; | |
4543 | return h; | |
4544 | } | |
4545 | ||
4546 | static inline struct elf_link_hash_entry * | |
4547 | elf_follow_link (struct elf_link_hash_entry *h) | |
4548 | { | |
4549 | return (struct elf_link_hash_entry *) follow_link (&h->root); | |
4550 | } | |
4551 | ||
4552 | static inline struct ppc_link_hash_entry * | |
4553 | ppc_follow_link (struct ppc_link_hash_entry *h) | |
4554 | { | |
4555 | return (struct ppc_link_hash_entry *) follow_link (&h->elf.root); | |
4556 | } | |
4557 | ||
40d16e0b AM |
4558 | /* Merge PLT info on FROM with that on TO. */ |
4559 | ||
4560 | static void | |
4561 | move_plt_plist (struct ppc_link_hash_entry *from, | |
4562 | struct ppc_link_hash_entry *to) | |
4563 | { | |
4564 | if (from->elf.plt.plist != NULL) | |
4565 | { | |
4566 | if (to->elf.plt.plist != NULL) | |
4567 | { | |
4568 | struct plt_entry **entp; | |
4569 | struct plt_entry *ent; | |
4570 | ||
4571 | for (entp = &from->elf.plt.plist; (ent = *entp) != NULL; ) | |
4572 | { | |
4573 | struct plt_entry *dent; | |
4574 | ||
4575 | for (dent = to->elf.plt.plist; dent != NULL; dent = dent->next) | |
4576 | if (dent->addend == ent->addend) | |
4577 | { | |
4578 | dent->plt.refcount += ent->plt.refcount; | |
4579 | *entp = ent->next; | |
4580 | break; | |
4581 | } | |
4582 | if (dent == NULL) | |
4583 | entp = &ent->next; | |
4584 | } | |
4585 | *entp = to->elf.plt.plist; | |
4586 | } | |
4587 | ||
4588 | to->elf.plt.plist = from->elf.plt.plist; | |
4589 | from->elf.plt.plist = NULL; | |
4590 | } | |
4591 | } | |
4592 | ||
65f38f15 AM |
4593 | /* Copy the extra info we tack onto an elf_link_hash_entry. */ |
4594 | ||
4595 | static void | |
fcfa13d2 AM |
4596 | ppc64_elf_copy_indirect_symbol (struct bfd_link_info *info, |
4597 | struct elf_link_hash_entry *dir, | |
4598 | struct elf_link_hash_entry *ind) | |
65f38f15 AM |
4599 | { |
4600 | struct ppc_link_hash_entry *edir, *eind; | |
4601 | ||
4602 | edir = (struct ppc_link_hash_entry *) dir; | |
4603 | eind = (struct ppc_link_hash_entry *) ind; | |
4604 | ||
c79d6685 AM |
4605 | edir->is_func |= eind->is_func; |
4606 | edir->is_func_descriptor |= eind->is_func_descriptor; | |
4607 | edir->tls_mask |= eind->tls_mask; | |
4608 | if (eind->oh != NULL) | |
4609 | edir->oh = ppc_follow_link (eind->oh); | |
4610 | ||
4611 | /* If called to transfer flags for a weakdef during processing | |
4612 | of elf_adjust_dynamic_symbol, don't copy NON_GOT_REF. | |
4613 | We clear it ourselves for ELIMINATE_COPY_RELOCS. */ | |
4614 | if (!(ELIMINATE_COPY_RELOCS | |
4615 | && eind->elf.root.type != bfd_link_hash_indirect | |
4616 | && edir->elf.dynamic_adjusted)) | |
4617 | edir->elf.non_got_ref |= eind->elf.non_got_ref; | |
4618 | ||
4619 | edir->elf.ref_dynamic |= eind->elf.ref_dynamic; | |
4620 | edir->elf.ref_regular |= eind->elf.ref_regular; | |
4621 | edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak; | |
4622 | edir->elf.needs_plt |= eind->elf.needs_plt; | |
a345bc8d | 4623 | edir->elf.pointer_equality_needed |= eind->elf.pointer_equality_needed; |
c79d6685 | 4624 | |
411e1bfb | 4625 | /* Copy over any dynamic relocs we may have on the indirect sym. */ |
bbd7ec4a | 4626 | if (eind->dyn_relocs != NULL) |
65f38f15 | 4627 | { |
bbd7ec4a AM |
4628 | if (edir->dyn_relocs != NULL) |
4629 | { | |
6061a67d AM |
4630 | struct elf_dyn_relocs **pp; |
4631 | struct elf_dyn_relocs *p; | |
bbd7ec4a | 4632 | |
fcfa13d2 | 4633 | /* Add reloc counts against the indirect sym to the direct sym |
bbd7ec4a AM |
4634 | list. Merge any entries against the same section. */ |
4635 | for (pp = &eind->dyn_relocs; (p = *pp) != NULL; ) | |
4636 | { | |
6061a67d | 4637 | struct elf_dyn_relocs *q; |
bbd7ec4a AM |
4638 | |
4639 | for (q = edir->dyn_relocs; q != NULL; q = q->next) | |
4640 | if (q->sec == p->sec) | |
4641 | { | |
4642 | q->pc_count += p->pc_count; | |
4643 | q->count += p->count; | |
4644 | *pp = p->next; | |
4645 | break; | |
4646 | } | |
4647 | if (q == NULL) | |
4648 | pp = &p->next; | |
4649 | } | |
4650 | *pp = edir->dyn_relocs; | |
4651 | } | |
4652 | ||
65f38f15 AM |
4653 | edir->dyn_relocs = eind->dyn_relocs; |
4654 | eind->dyn_relocs = NULL; | |
4655 | } | |
65f38f15 | 4656 | |
68ba6d40 AM |
4657 | /* If we were called to copy over info for a weak sym, that's all. |
4658 | You might think dyn_relocs need not be copied over; After all, | |
4659 | both syms will be dynamic or both non-dynamic so we're just | |
68ffbac6 | 4660 | moving reloc accounting around. However, ELIMINATE_COPY_RELOCS |
68ba6d40 AM |
4661 | code in ppc64_elf_adjust_dynamic_symbol needs to check for |
4662 | dyn_relocs in read-only sections, and it does so on what is the | |
4663 | DIR sym here. */ | |
4664 | if (eind->elf.root.type != bfd_link_hash_indirect) | |
4665 | return; | |
4666 | ||
81848ca0 AM |
4667 | /* Copy over got entries that we may have already seen to the |
4668 | symbol which just became indirect. */ | |
411e1bfb AM |
4669 | if (eind->elf.got.glist != NULL) |
4670 | { | |
4671 | if (edir->elf.got.glist != NULL) | |
4672 | { | |
4673 | struct got_entry **entp; | |
4674 | struct got_entry *ent; | |
4675 | ||
4676 | for (entp = &eind->elf.got.glist; (ent = *entp) != NULL; ) | |
4677 | { | |
4678 | struct got_entry *dent; | |
4679 | ||
4680 | for (dent = edir->elf.got.glist; dent != NULL; dent = dent->next) | |
4681 | if (dent->addend == ent->addend | |
e717da7e | 4682 | && dent->owner == ent->owner |
411e1bfb AM |
4683 | && dent->tls_type == ent->tls_type) |
4684 | { | |
4685 | dent->got.refcount += ent->got.refcount; | |
4686 | *entp = ent->next; | |
4687 | break; | |
4688 | } | |
4689 | if (dent == NULL) | |
4690 | entp = &ent->next; | |
4691 | } | |
4692 | *entp = edir->elf.got.glist; | |
4693 | } | |
4694 | ||
4695 | edir->elf.got.glist = eind->elf.got.glist; | |
4696 | eind->elf.got.glist = NULL; | |
4697 | } | |
4698 | ||
4699 | /* And plt entries. */ | |
40d16e0b | 4700 | move_plt_plist (eind, edir); |
411e1bfb | 4701 | |
fcfa13d2 | 4702 | if (eind->elf.dynindx != -1) |
411e1bfb | 4703 | { |
fcfa13d2 AM |
4704 | if (edir->elf.dynindx != -1) |
4705 | _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr, | |
4706 | edir->elf.dynstr_index); | |
411e1bfb AM |
4707 | edir->elf.dynindx = eind->elf.dynindx; |
4708 | edir->elf.dynstr_index = eind->elf.dynstr_index; | |
4709 | eind->elf.dynindx = -1; | |
4710 | eind->elf.dynstr_index = 0; | |
4711 | } | |
411e1bfb AM |
4712 | } |
4713 | ||
8387904d AM |
4714 | /* Find the function descriptor hash entry from the given function code |
4715 | hash entry FH. Link the entries via their OH fields. */ | |
4716 | ||
4717 | static struct ppc_link_hash_entry * | |
b31867b6 | 4718 | lookup_fdh (struct ppc_link_hash_entry *fh, struct ppc_link_hash_table *htab) |
8387904d AM |
4719 | { |
4720 | struct ppc_link_hash_entry *fdh = fh->oh; | |
4721 | ||
4722 | if (fdh == NULL) | |
4723 | { | |
4724 | const char *fd_name = fh->elf.root.root.string + 1; | |
4725 | ||
4726 | fdh = (struct ppc_link_hash_entry *) | |
4727 | elf_link_hash_lookup (&htab->elf, fd_name, FALSE, FALSE, FALSE); | |
b31867b6 AM |
4728 | if (fdh == NULL) |
4729 | return fdh; | |
4730 | ||
4731 | fdh->is_func_descriptor = 1; | |
4732 | fdh->oh = fh; | |
4733 | fh->is_func = 1; | |
4734 | fh->oh = fdh; | |
8387904d AM |
4735 | } |
4736 | ||
b31867b6 | 4737 | return ppc_follow_link (fdh); |
8387904d AM |
4738 | } |
4739 | ||
bb700d78 AM |
4740 | /* Make a fake function descriptor sym for the code sym FH. */ |
4741 | ||
4742 | static struct ppc_link_hash_entry * | |
4743 | make_fdh (struct bfd_link_info *info, | |
908b32fc | 4744 | struct ppc_link_hash_entry *fh) |
bb700d78 AM |
4745 | { |
4746 | bfd *abfd; | |
4747 | asymbol *newsym; | |
4748 | struct bfd_link_hash_entry *bh; | |
4749 | struct ppc_link_hash_entry *fdh; | |
4750 | ||
4751 | abfd = fh->elf.root.u.undef.abfd; | |
4752 | newsym = bfd_make_empty_symbol (abfd); | |
4753 | newsym->name = fh->elf.root.root.string + 1; | |
4754 | newsym->section = bfd_und_section_ptr; | |
4755 | newsym->value = 0; | |
908b32fc | 4756 | newsym->flags = BSF_WEAK; |
bb700d78 AM |
4757 | |
4758 | bh = NULL; | |
4759 | if (!_bfd_generic_link_add_one_symbol (info, abfd, newsym->name, | |
4760 | newsym->flags, newsym->section, | |
4761 | newsym->value, NULL, FALSE, FALSE, | |
4762 | &bh)) | |
4763 | return NULL; | |
4764 | ||
4765 | fdh = (struct ppc_link_hash_entry *) bh; | |
4766 | fdh->elf.non_elf = 0; | |
908b32fc AM |
4767 | fdh->fake = 1; |
4768 | fdh->is_func_descriptor = 1; | |
4769 | fdh->oh = fh; | |
4770 | fh->is_func = 1; | |
4771 | fh->oh = fdh; | |
bb700d78 AM |
4772 | return fdh; |
4773 | } | |
4774 | ||
8387904d AM |
4775 | /* Fix function descriptor symbols defined in .opd sections to be |
4776 | function type. */ | |
555cd476 AM |
4777 | |
4778 | static bfd_boolean | |
c16153ae | 4779 | ppc64_elf_add_symbol_hook (bfd *ibfd, |
e054468f | 4780 | struct bfd_link_info *info, |
555cd476 | 4781 | Elf_Internal_Sym *isym, |
6911b7dc | 4782 | const char **name, |
555cd476 AM |
4783 | flagword *flags ATTRIBUTE_UNUSED, |
4784 | asection **sec, | |
4785 | bfd_vma *value ATTRIBUTE_UNUSED) | |
4786 | { | |
f64b2e8d NC |
4787 | if ((ibfd->flags & DYNAMIC) == 0 |
4788 | && ELF_ST_BIND (isym->st_info) == STB_GNU_UNIQUE) | |
4789 | elf_tdata (info->output_bfd)->has_gnu_symbols = TRUE; | |
4790 | ||
e054468f | 4791 | if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC) |
c16153ae L |
4792 | { |
4793 | if ((ibfd->flags & DYNAMIC) == 0) | |
f64b2e8d | 4794 | elf_tdata (info->output_bfd)->has_gnu_symbols = TRUE; |
c16153ae | 4795 | } |
e054468f AM |
4796 | else if (ELF_ST_TYPE (isym->st_info) == STT_FUNC) |
4797 | ; | |
4798 | else if (*sec != NULL | |
70cc837d | 4799 | && strcmp ((*sec)->name, ".opd") == 0) |
555cd476 | 4800 | isym->st_info = ELF_ST_INFO (ELF_ST_BIND (isym->st_info), STT_FUNC); |
433817dd | 4801 | |
6911b7dc AM |
4802 | if ((STO_PPC64_LOCAL_MASK & isym->st_other) != 0) |
4803 | { | |
4804 | if (abiversion (ibfd) == 0) | |
4805 | set_abiversion (ibfd, 2); | |
4806 | else if (abiversion (ibfd) == 1) | |
4807 | { | |
4808 | info->callbacks->einfo (_("%P: symbol '%s' has invalid st_other" | |
4809 | " for ABI version 1\n"), name); | |
4810 | bfd_set_error (bfd_error_bad_value); | |
4811 | return FALSE; | |
4812 | } | |
4813 | } | |
4814 | ||
555cd476 AM |
4815 | return TRUE; |
4816 | } | |
4817 | ||
6911b7dc AM |
4818 | /* Merge non-visibility st_other attributes: local entry point. */ |
4819 | ||
4820 | static void | |
4821 | ppc64_elf_merge_symbol_attribute (struct elf_link_hash_entry *h, | |
4822 | const Elf_Internal_Sym *isym, | |
4823 | bfd_boolean definition, | |
4824 | bfd_boolean dynamic) | |
4825 | { | |
4826 | if (definition && !dynamic) | |
4827 | h->other = ((isym->st_other & ~ELF_ST_VISIBILITY (-1)) | |
4828 | | ELF_ST_VISIBILITY (h->other)); | |
4829 | } | |
4830 | ||
8387904d | 4831 | /* This function makes an old ABI object reference to ".bar" cause the |
908b32fc AM |
4832 | inclusion of a new ABI object archive that defines "bar". |
4833 | NAME is a symbol defined in an archive. Return a symbol in the hash | |
4834 | table that might be satisfied by the archive symbols. */ | |
8387904d AM |
4835 | |
4836 | static struct elf_link_hash_entry * | |
4837 | ppc64_elf_archive_symbol_lookup (bfd *abfd, | |
4838 | struct bfd_link_info *info, | |
4839 | const char *name) | |
4840 | { | |
4841 | struct elf_link_hash_entry *h; | |
4842 | char *dot_name; | |
4843 | size_t len; | |
4844 | ||
4845 | h = _bfd_elf_archive_symbol_lookup (abfd, info, name); | |
908b32fc AM |
4846 | if (h != NULL |
4847 | /* Don't return this sym if it is a fake function descriptor | |
4848 | created by add_symbol_adjust. */ | |
4849 | && !(h->root.type == bfd_link_hash_undefweak | |
4850 | && ((struct ppc_link_hash_entry *) h)->fake)) | |
8387904d AM |
4851 | return h; |
4852 | ||
4853 | if (name[0] == '.') | |
4854 | return h; | |
4855 | ||
4856 | len = strlen (name); | |
4857 | dot_name = bfd_alloc (abfd, len + 2); | |
4858 | if (dot_name == NULL) | |
4859 | return (struct elf_link_hash_entry *) 0 - 1; | |
4860 | dot_name[0] = '.'; | |
4861 | memcpy (dot_name + 1, name, len + 1); | |
4862 | h = _bfd_elf_archive_symbol_lookup (abfd, info, dot_name); | |
4863 | bfd_release (abfd, dot_name); | |
4864 | return h; | |
4865 | } | |
4866 | ||
4867 | /* This function satisfies all old ABI object references to ".bar" if a | |
99877b66 AM |
4868 | new ABI object defines "bar". Well, at least, undefined dot symbols |
4869 | are made weak. This stops later archive searches from including an | |
4870 | object if we already have a function descriptor definition. It also | |
35b0ce59 AM |
4871 | prevents the linker complaining about undefined symbols. |
4872 | We also check and correct mismatched symbol visibility here. The | |
4873 | most restrictive visibility of the function descriptor and the | |
4874 | function entry symbol is used. */ | |
8387904d AM |
4875 | |
4876 | static bfd_boolean | |
b3fac117 | 4877 | add_symbol_adjust (struct ppc_link_hash_entry *eh, struct bfd_link_info *info) |
8387904d | 4878 | { |
8387904d AM |
4879 | struct ppc_link_hash_table *htab; |
4880 | struct ppc_link_hash_entry *fdh; | |
4881 | ||
b3fac117 | 4882 | if (eh->elf.root.type == bfd_link_hash_indirect) |
8387904d AM |
4883 | return TRUE; |
4884 | ||
b3fac117 AM |
4885 | if (eh->elf.root.type == bfd_link_hash_warning) |
4886 | eh = (struct ppc_link_hash_entry *) eh->elf.root.u.i.link; | |
8387904d | 4887 | |
b3fac117 AM |
4888 | if (eh->elf.root.root.string[0] != '.') |
4889 | abort (); | |
8387904d | 4890 | |
b3fac117 | 4891 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
4892 | if (htab == NULL) |
4893 | return FALSE; | |
4894 | ||
b31867b6 AM |
4895 | fdh = lookup_fdh (eh, htab); |
4896 | if (fdh == NULL) | |
4897 | { | |
4898 | if (!info->relocatable | |
4899 | && (eh->elf.root.type == bfd_link_hash_undefined | |
4900 | || eh->elf.root.type == bfd_link_hash_undefweak) | |
4901 | && eh->elf.ref_regular) | |
4902 | { | |
4903 | /* Make an undefweak function descriptor sym, which is enough to | |
4904 | pull in an --as-needed shared lib, but won't cause link | |
4905 | errors. Archives are handled elsewhere. */ | |
4906 | fdh = make_fdh (info, eh); | |
4907 | if (fdh == NULL) | |
4908 | return FALSE; | |
4909 | fdh->elf.ref_regular = 1; | |
4910 | } | |
bb700d78 | 4911 | } |
b31867b6 | 4912 | else |
8387904d | 4913 | { |
35b0ce59 AM |
4914 | unsigned entry_vis = ELF_ST_VISIBILITY (eh->elf.other) - 1; |
4915 | unsigned descr_vis = ELF_ST_VISIBILITY (fdh->elf.other) - 1; | |
4916 | if (entry_vis < descr_vis) | |
4917 | fdh->elf.other += entry_vis - descr_vis; | |
4918 | else if (entry_vis > descr_vis) | |
4919 | eh->elf.other += descr_vis - entry_vis; | |
4920 | ||
e87d886e AM |
4921 | if ((fdh->elf.root.type == bfd_link_hash_defined |
4922 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
4923 | && eh->elf.root.type == bfd_link_hash_undefined) | |
35b0ce59 AM |
4924 | { |
4925 | eh->elf.root.type = bfd_link_hash_undefweak; | |
4926 | eh->was_undefined = 1; | |
4927 | htab->twiddled_syms = 1; | |
4928 | } | |
8387904d | 4929 | } |
99877b66 | 4930 | |
8387904d AM |
4931 | return TRUE; |
4932 | } | |
4933 | ||
b3fac117 AM |
4934 | /* Process list of dot-symbols we made in link_hash_newfunc. */ |
4935 | ||
8387904d | 4936 | static bfd_boolean |
7d9616d7 | 4937 | ppc64_elf_process_dot_syms (bfd *ibfd, struct bfd_link_info *info) |
8387904d | 4938 | { |
99877b66 | 4939 | struct ppc_link_hash_table *htab; |
b3fac117 | 4940 | struct ppc_link_hash_entry **p, *eh; |
433817dd | 4941 | |
0c8d6e5c | 4942 | if (!is_ppc64_elf (info->output_bfd)) |
35b0ce59 | 4943 | return TRUE; |
4dfe6ac6 NC |
4944 | htab = ppc_hash_table (info); |
4945 | if (htab == NULL) | |
4946 | return FALSE; | |
35b0ce59 | 4947 | |
0c8d6e5c | 4948 | if (is_ppc64_elf (ibfd)) |
b3fac117 AM |
4949 | { |
4950 | p = &htab->dot_syms; | |
4951 | while ((eh = *p) != NULL) | |
4952 | { | |
4953 | *p = NULL; | |
1c865ab2 AM |
4954 | if (&eh->elf == htab->elf.hgot) |
4955 | ; | |
4956 | else if (htab->elf.hgot == NULL | |
4957 | && strcmp (eh->elf.root.root.string, ".TOC.") == 0) | |
4958 | htab->elf.hgot = &eh->elf; | |
4959 | else if (!add_symbol_adjust (eh, info)) | |
b3fac117 AM |
4960 | return FALSE; |
4961 | p = &eh->u.next_dot_sym; | |
4962 | } | |
4963 | } | |
4964 | ||
4965 | /* Clear the list for non-ppc64 input files. */ | |
4966 | p = &htab->dot_syms; | |
4967 | while ((eh = *p) != NULL) | |
4968 | { | |
4969 | *p = NULL; | |
4970 | p = &eh->u.next_dot_sym; | |
4971 | } | |
99877b66 AM |
4972 | |
4973 | /* We need to fix the undefs list for any syms we have twiddled to | |
4974 | undef_weak. */ | |
4975 | if (htab->twiddled_syms) | |
4976 | { | |
77cfaee6 | 4977 | bfd_link_repair_undef_list (&htab->elf.root); |
99877b66 AM |
4978 | htab->twiddled_syms = 0; |
4979 | } | |
b3fac117 | 4980 | return TRUE; |
8387904d AM |
4981 | } |
4982 | ||
97fed1c9 JJ |
4983 | /* Undo hash table changes when an --as-needed input file is determined |
4984 | not to be needed. */ | |
4985 | ||
4986 | static bfd_boolean | |
e5034e59 AM |
4987 | ppc64_elf_notice_as_needed (bfd *ibfd, |
4988 | struct bfd_link_info *info, | |
4989 | enum notice_asneeded_action act) | |
97fed1c9 | 4990 | { |
e5034e59 AM |
4991 | if (act == notice_not_needed) |
4992 | { | |
4993 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
4dfe6ac6 | 4994 | |
e5034e59 AM |
4995 | if (htab == NULL) |
4996 | return FALSE; | |
4dfe6ac6 | 4997 | |
e5034e59 AM |
4998 | htab->dot_syms = NULL; |
4999 | } | |
5000 | return _bfd_elf_notice_as_needed (ibfd, info, act); | |
97fed1c9 JJ |
5001 | } |
5002 | ||
aa374f67 AM |
5003 | /* If --just-symbols against a final linked binary, then assume we need |
5004 | toc adjusting stubs when calling functions defined there. */ | |
5005 | ||
5006 | static void | |
5007 | ppc64_elf_link_just_syms (asection *sec, struct bfd_link_info *info) | |
5008 | { | |
5009 | if ((sec->flags & SEC_CODE) != 0 | |
5010 | && (sec->owner->flags & (EXEC_P | DYNAMIC)) != 0 | |
5011 | && is_ppc64_elf (sec->owner)) | |
5012 | { | |
2c3f079f AM |
5013 | if (abiversion (sec->owner) >= 2 |
5014 | || bfd_get_section_by_name (sec->owner, ".opd") != NULL) | |
aa374f67 AM |
5015 | sec->has_toc_reloc = 1; |
5016 | } | |
5017 | _bfd_elf_link_just_syms (sec, info); | |
5018 | } | |
5019 | ||
e054468f | 5020 | static struct plt_entry ** |
4ce794b7 AM |
5021 | update_local_sym_info (bfd *abfd, Elf_Internal_Shdr *symtab_hdr, |
5022 | unsigned long r_symndx, bfd_vma r_addend, int tls_type) | |
411e1bfb AM |
5023 | { |
5024 | struct got_entry **local_got_ents = elf_local_got_ents (abfd); | |
e054468f | 5025 | struct plt_entry **local_plt; |
f961d9dd | 5026 | unsigned char *local_got_tls_masks; |
411e1bfb AM |
5027 | |
5028 | if (local_got_ents == NULL) | |
5029 | { | |
5030 | bfd_size_type size = symtab_hdr->sh_info; | |
5031 | ||
e054468f AM |
5032 | size *= (sizeof (*local_got_ents) |
5033 | + sizeof (*local_plt) | |
5034 | + sizeof (*local_got_tls_masks)); | |
4ce794b7 | 5035 | local_got_ents = bfd_zalloc (abfd, size); |
411e1bfb | 5036 | if (local_got_ents == NULL) |
e054468f | 5037 | return NULL; |
411e1bfb AM |
5038 | elf_local_got_ents (abfd) = local_got_ents; |
5039 | } | |
5040 | ||
e054468f | 5041 | if ((tls_type & (PLT_IFUNC | TLS_EXPLICIT)) == 0) |
411e1bfb AM |
5042 | { |
5043 | struct got_entry *ent; | |
5044 | ||
5045 | for (ent = local_got_ents[r_symndx]; ent != NULL; ent = ent->next) | |
e717da7e AM |
5046 | if (ent->addend == r_addend |
5047 | && ent->owner == abfd | |
5048 | && ent->tls_type == tls_type) | |
411e1bfb AM |
5049 | break; |
5050 | if (ent == NULL) | |
5051 | { | |
5052 | bfd_size_type amt = sizeof (*ent); | |
4ce794b7 | 5053 | ent = bfd_alloc (abfd, amt); |
411e1bfb AM |
5054 | if (ent == NULL) |
5055 | return FALSE; | |
5056 | ent->next = local_got_ents[r_symndx]; | |
5057 | ent->addend = r_addend; | |
e717da7e | 5058 | ent->owner = abfd; |
411e1bfb | 5059 | ent->tls_type = tls_type; |
927be08e | 5060 | ent->is_indirect = FALSE; |
411e1bfb AM |
5061 | ent->got.refcount = 0; |
5062 | local_got_ents[r_symndx] = ent; | |
5063 | } | |
5064 | ent->got.refcount += 1; | |
5065 | } | |
5066 | ||
e054468f | 5067 | local_plt = (struct plt_entry **) (local_got_ents + symtab_hdr->sh_info); |
f961d9dd | 5068 | local_got_tls_masks = (unsigned char *) (local_plt + symtab_hdr->sh_info); |
e7b938ca | 5069 | local_got_tls_masks[r_symndx] |= tls_type; |
e054468f AM |
5070 | |
5071 | return local_plt + r_symndx; | |
65f38f15 AM |
5072 | } |
5073 | ||
411e1bfb | 5074 | static bfd_boolean |
e054468f | 5075 | update_plt_info (bfd *abfd, struct plt_entry **plist, bfd_vma addend) |
1e2f5b6e | 5076 | { |
411e1bfb | 5077 | struct plt_entry *ent; |
1e2f5b6e | 5078 | |
e054468f | 5079 | for (ent = *plist; ent != NULL; ent = ent->next) |
411e1bfb AM |
5080 | if (ent->addend == addend) |
5081 | break; | |
5082 | if (ent == NULL) | |
1e2f5b6e | 5083 | { |
411e1bfb | 5084 | bfd_size_type amt = sizeof (*ent); |
4ce794b7 | 5085 | ent = bfd_alloc (abfd, amt); |
411e1bfb AM |
5086 | if (ent == NULL) |
5087 | return FALSE; | |
e054468f | 5088 | ent->next = *plist; |
411e1bfb AM |
5089 | ent->addend = addend; |
5090 | ent->plt.refcount = 0; | |
e054468f | 5091 | *plist = ent; |
1e2f5b6e | 5092 | } |
411e1bfb | 5093 | ent->plt.refcount += 1; |
b34976b6 | 5094 | return TRUE; |
1e2f5b6e AM |
5095 | } |
5096 | ||
e054468f AM |
5097 | static bfd_boolean |
5098 | is_branch_reloc (enum elf_ppc64_reloc_type r_type) | |
5099 | { | |
5100 | return (r_type == R_PPC64_REL24 | |
5101 | || r_type == R_PPC64_REL14 | |
5102 | || r_type == R_PPC64_REL14_BRTAKEN | |
5103 | || r_type == R_PPC64_REL14_BRNTAKEN | |
5104 | || r_type == R_PPC64_ADDR24 | |
5105 | || r_type == R_PPC64_ADDR14 | |
5106 | || r_type == R_PPC64_ADDR14_BRTAKEN | |
5107 | || r_type == R_PPC64_ADDR14_BRNTAKEN); | |
5108 | } | |
5109 | ||
5bd4f169 | 5110 | /* Look through the relocs for a section during the first phase, and |
65f38f15 | 5111 | calculate needed space in the global offset table, procedure |
5d1634d7 | 5112 | linkage table, and dynamic reloc sections. */ |
5bd4f169 | 5113 | |
b34976b6 | 5114 | static bfd_boolean |
4ce794b7 AM |
5115 | ppc64_elf_check_relocs (bfd *abfd, struct bfd_link_info *info, |
5116 | asection *sec, const Elf_Internal_Rela *relocs) | |
5bd4f169 | 5117 | { |
65f38f15 | 5118 | struct ppc_link_hash_table *htab; |
5bd4f169 | 5119 | Elf_Internal_Shdr *symtab_hdr; |
c7e2358a | 5120 | struct elf_link_hash_entry **sym_hashes; |
5bd4f169 AM |
5121 | const Elf_Internal_Rela *rel; |
5122 | const Elf_Internal_Rela *rel_end; | |
5bd4f169 | 5123 | asection *sreloc; |
1e2f5b6e | 5124 | asection **opd_sym_map; |
3a71aa26 | 5125 | struct elf_link_hash_entry *tga, *dottga; |
5bd4f169 | 5126 | |
1049f94e | 5127 | if (info->relocatable) |
b34976b6 | 5128 | return TRUE; |
5bd4f169 | 5129 | |
680a3378 AM |
5130 | /* Don't do anything special with non-loaded, non-alloced sections. |
5131 | In particular, any relocs in such sections should not affect GOT | |
5132 | and PLT reference counting (ie. we don't allow them to create GOT | |
5133 | or PLT entries), there's no possibility or desire to optimize TLS | |
5134 | relocs, and there's not much point in propagating relocs to shared | |
5135 | libs that the dynamic linker won't relocate. */ | |
5136 | if ((sec->flags & SEC_ALLOC) == 0) | |
5137 | return TRUE; | |
5138 | ||
0c8d6e5c | 5139 | BFD_ASSERT (is_ppc64_elf (abfd)); |
0ffa91dd | 5140 | |
65f38f15 | 5141 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
5142 | if (htab == NULL) |
5143 | return FALSE; | |
5144 | ||
3a71aa26 AM |
5145 | tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr", |
5146 | FALSE, FALSE, TRUE); | |
5147 | dottga = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr", | |
5148 | FALSE, FALSE, TRUE); | |
0ffa91dd | 5149 | symtab_hdr = &elf_symtab_hdr (abfd); |
5bd4f169 | 5150 | sym_hashes = elf_sym_hashes (abfd); |
5bd4f169 | 5151 | sreloc = NULL; |
1e2f5b6e | 5152 | opd_sym_map = NULL; |
70cc837d | 5153 | if (strcmp (sec->name, ".opd") == 0) |
1e2f5b6e AM |
5154 | { |
5155 | /* Garbage collection needs some extra help with .opd sections. | |
5156 | We don't want to necessarily keep everything referenced by | |
5157 | relocs in .opd, as that would keep all functions. Instead, | |
5158 | if we reference an .opd symbol (a function descriptor), we | |
5159 | want to keep the function code symbol's section. This is | |
5160 | easy for global symbols, but for local syms we need to keep | |
74f0fb50 | 5161 | information about the associated function section. */ |
1e2f5b6e AM |
5162 | bfd_size_type amt; |
5163 | ||
ee67d69a AM |
5164 | if (abiversion (abfd) == 0) |
5165 | set_abiversion (abfd, 1); | |
5166 | else if (abiversion (abfd) == 2) | |
5167 | { | |
5168 | info->callbacks->einfo (_("%P: .opd not allowed in ABI version %d\n"), | |
5169 | abiversion (abfd)); | |
5170 | bfd_set_error (bfd_error_bad_value); | |
5171 | return FALSE; | |
5172 | } | |
74f0fb50 | 5173 | amt = sec->size * sizeof (*opd_sym_map) / 8; |
4ce794b7 | 5174 | opd_sym_map = bfd_zalloc (abfd, amt); |
1e2f5b6e | 5175 | if (opd_sym_map == NULL) |
b34976b6 | 5176 | return FALSE; |
74f0fb50 | 5177 | ppc64_elf_section_data (sec)->u.opd.func_sec = opd_sym_map; |
7c8fe5c4 AM |
5178 | BFD_ASSERT (ppc64_elf_section_data (sec)->sec_type == sec_normal); |
5179 | ppc64_elf_section_data (sec)->sec_type = sec_opd; | |
1e2f5b6e | 5180 | } |
5bd4f169 AM |
5181 | |
5182 | rel_end = relocs + sec->reloc_count; | |
5183 | for (rel = relocs; rel < rel_end; rel++) | |
5184 | { | |
5185 | unsigned long r_symndx; | |
5186 | struct elf_link_hash_entry *h; | |
04c9666a | 5187 | enum elf_ppc64_reloc_type r_type; |
727fc41e | 5188 | int tls_type; |
7c8fe5c4 | 5189 | struct _ppc64_elf_section_data *ppc64_sec; |
e054468f | 5190 | struct plt_entry **ifunc; |
5bd4f169 AM |
5191 | |
5192 | r_symndx = ELF64_R_SYM (rel->r_info); | |
5193 | if (r_symndx < symtab_hdr->sh_info) | |
5194 | h = NULL; | |
5195 | else | |
973a3492 L |
5196 | { |
5197 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
b31867b6 | 5198 | h = elf_follow_link (h); |
81fbe831 AM |
5199 | |
5200 | /* PR15323, ref flags aren't set for references in the same | |
5201 | object. */ | |
5202 | h->root.non_ir_ref = 1; | |
1c865ab2 AM |
5203 | |
5204 | if (h == htab->elf.hgot) | |
5205 | sec->has_toc_reloc = 1; | |
973a3492 | 5206 | } |
5bd4f169 | 5207 | |
727fc41e | 5208 | tls_type = 0; |
e054468f | 5209 | ifunc = NULL; |
25f23106 AM |
5210 | if (h != NULL) |
5211 | { | |
5212 | if (h->type == STT_GNU_IFUNC) | |
5213 | { | |
5214 | h->needs_plt = 1; | |
5215 | ifunc = &h->plt.plist; | |
5216 | } | |
5217 | } | |
5218 | else | |
5219 | { | |
5220 | Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache, | |
5221 | abfd, r_symndx); | |
5222 | if (isym == NULL) | |
5223 | return FALSE; | |
5224 | ||
5225 | if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC) | |
5226 | { | |
5227 | ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
5228 | rel->r_addend, PLT_IFUNC); | |
5229 | if (ifunc == NULL) | |
5230 | return FALSE; | |
5231 | } | |
5232 | } | |
4ce794b7 | 5233 | r_type = ELF64_R_TYPE (rel->r_info); |
e054468f AM |
5234 | if (is_branch_reloc (r_type)) |
5235 | { | |
5236 | if (h != NULL && (h == tga || h == dottga)) | |
5237 | { | |
5238 | if (rel != relocs | |
5239 | && (ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSGD | |
5240 | || ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSLD)) | |
5241 | /* We have a new-style __tls_get_addr call with a marker | |
5242 | reloc. */ | |
5243 | ; | |
5244 | else | |
5245 | /* Mark this section as having an old-style call. */ | |
5246 | sec->has_tls_get_addr_call = 1; | |
5247 | } | |
727fc41e | 5248 | |
e054468f | 5249 | /* STT_GNU_IFUNC symbols must have a PLT entry. */ |
e054468f AM |
5250 | if (ifunc != NULL |
5251 | && !update_plt_info (abfd, ifunc, rel->r_addend)) | |
5252 | return FALSE; | |
5253 | } | |
727fc41e | 5254 | |
a33d1f77 | 5255 | switch (r_type) |
5bd4f169 | 5256 | { |
727fc41e AM |
5257 | case R_PPC64_TLSGD: |
5258 | case R_PPC64_TLSLD: | |
5259 | /* These special tls relocs tie a call to __tls_get_addr with | |
5260 | its parameter symbol. */ | |
5261 | break; | |
5262 | ||
411e1bfb AM |
5263 | case R_PPC64_GOT_TLSLD16: |
5264 | case R_PPC64_GOT_TLSLD16_LO: | |
5265 | case R_PPC64_GOT_TLSLD16_HI: | |
5266 | case R_PPC64_GOT_TLSLD16_HA: | |
951fd09b | 5267 | tls_type = TLS_TLS | TLS_LD; |
411e1bfb AM |
5268 | goto dogottls; |
5269 | ||
5270 | case R_PPC64_GOT_TLSGD16: | |
5271 | case R_PPC64_GOT_TLSGD16_LO: | |
5272 | case R_PPC64_GOT_TLSGD16_HI: | |
5273 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b | 5274 | tls_type = TLS_TLS | TLS_GD; |
411e1bfb AM |
5275 | goto dogottls; |
5276 | ||
5277 | case R_PPC64_GOT_TPREL16_DS: | |
5278 | case R_PPC64_GOT_TPREL16_LO_DS: | |
5279 | case R_PPC64_GOT_TPREL16_HI: | |
5280 | case R_PPC64_GOT_TPREL16_HA: | |
1d483afe | 5281 | if (!info->executable) |
411e1bfb AM |
5282 | info->flags |= DF_STATIC_TLS; |
5283 | tls_type = TLS_TLS | TLS_TPREL; | |
5284 | goto dogottls; | |
5285 | ||
5286 | case R_PPC64_GOT_DTPREL16_DS: | |
5287 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
5288 | case R_PPC64_GOT_DTPREL16_HI: | |
5289 | case R_PPC64_GOT_DTPREL16_HA: | |
5290 | tls_type = TLS_TLS | TLS_DTPREL; | |
5291 | dogottls: | |
5292 | sec->has_tls_reloc = 1; | |
5293 | /* Fall thru */ | |
5294 | ||
5bd4f169 | 5295 | case R_PPC64_GOT16: |
5bd4f169 | 5296 | case R_PPC64_GOT16_DS: |
65f38f15 AM |
5297 | case R_PPC64_GOT16_HA: |
5298 | case R_PPC64_GOT16_HI: | |
5299 | case R_PPC64_GOT16_LO: | |
5bd4f169 | 5300 | case R_PPC64_GOT16_LO_DS: |
65f38f15 | 5301 | /* This symbol requires a global offset table entry. */ |
4c52953f | 5302 | sec->has_toc_reloc = 1; |
33c0ec9d AM |
5303 | if (r_type == R_PPC64_GOT_TLSLD16 |
5304 | || r_type == R_PPC64_GOT_TLSGD16 | |
5305 | || r_type == R_PPC64_GOT_TPREL16_DS | |
5306 | || r_type == R_PPC64_GOT_DTPREL16_DS | |
5307 | || r_type == R_PPC64_GOT16 | |
5308 | || r_type == R_PPC64_GOT16_DS) | |
5309 | { | |
5310 | htab->do_multi_toc = 1; | |
d77c8a4b | 5311 | ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1; |
33c0ec9d AM |
5312 | } |
5313 | ||
e717da7e AM |
5314 | if (ppc64_elf_tdata (abfd)->got == NULL |
5315 | && !create_got_section (abfd, info)) | |
b34976b6 | 5316 | return FALSE; |
5bd4f169 AM |
5317 | |
5318 | if (h != NULL) | |
5319 | { | |
411e1bfb AM |
5320 | struct ppc_link_hash_entry *eh; |
5321 | struct got_entry *ent; | |
65f38f15 | 5322 | |
411e1bfb AM |
5323 | eh = (struct ppc_link_hash_entry *) h; |
5324 | for (ent = eh->elf.got.glist; ent != NULL; ent = ent->next) | |
5325 | if (ent->addend == rel->r_addend | |
e717da7e | 5326 | && ent->owner == abfd |
411e1bfb AM |
5327 | && ent->tls_type == tls_type) |
5328 | break; | |
5329 | if (ent == NULL) | |
5bd4f169 | 5330 | { |
411e1bfb | 5331 | bfd_size_type amt = sizeof (*ent); |
4ce794b7 | 5332 | ent = bfd_alloc (abfd, amt); |
411e1bfb | 5333 | if (ent == NULL) |
b34976b6 | 5334 | return FALSE; |
411e1bfb AM |
5335 | ent->next = eh->elf.got.glist; |
5336 | ent->addend = rel->r_addend; | |
e717da7e | 5337 | ent->owner = abfd; |
411e1bfb | 5338 | ent->tls_type = tls_type; |
927be08e | 5339 | ent->is_indirect = FALSE; |
411e1bfb AM |
5340 | ent->got.refcount = 0; |
5341 | eh->elf.got.glist = ent; | |
5bd4f169 | 5342 | } |
411e1bfb | 5343 | ent->got.refcount += 1; |
e7b938ca | 5344 | eh->tls_mask |= tls_type; |
5bd4f169 | 5345 | } |
411e1bfb AM |
5346 | else |
5347 | /* This is a global offset table entry for a local symbol. */ | |
5348 | if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
5349 | rel->r_addend, tls_type)) | |
5350 | return FALSE; | |
a345bc8d AM |
5351 | |
5352 | /* We may also need a plt entry if the symbol turns out to be | |
5353 | an ifunc. */ | |
5354 | if (h != NULL && !info->shared && abiversion (abfd) == 2) | |
5355 | { | |
5356 | if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend)) | |
5357 | return FALSE; | |
5358 | } | |
5bd4f169 AM |
5359 | break; |
5360 | ||
5bd4f169 | 5361 | case R_PPC64_PLT16_HA: |
65f38f15 AM |
5362 | case R_PPC64_PLT16_HI: |
5363 | case R_PPC64_PLT16_LO: | |
5364 | case R_PPC64_PLT32: | |
5365 | case R_PPC64_PLT64: | |
5bd4f169 | 5366 | /* This symbol requires a procedure linkage table entry. We |
3fad3c7c AM |
5367 | actually build the entry in adjust_dynamic_symbol, |
5368 | because this might be a case of linking PIC code without | |
5369 | linking in any dynamic objects, in which case we don't | |
5370 | need to generate a procedure linkage table after all. */ | |
5bd4f169 AM |
5371 | if (h == NULL) |
5372 | { | |
5373 | /* It does not make sense to have a procedure linkage | |
3fad3c7c | 5374 | table entry for a local symbol. */ |
5bd4f169 | 5375 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 5376 | return FALSE; |
5bd4f169 | 5377 | } |
411e1bfb | 5378 | else |
e054468f AM |
5379 | { |
5380 | if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend)) | |
5381 | return FALSE; | |
5382 | h->needs_plt = 1; | |
5383 | if (h->root.root.string[0] == '.' | |
5384 | && h->root.root.string[1] != '\0') | |
5385 | ((struct ppc_link_hash_entry *) h)->is_func = 1; | |
5386 | } | |
5bd4f169 AM |
5387 | break; |
5388 | ||
5389 | /* The following relocations don't need to propagate the | |
5390 | relocation if linking a shared object since they are | |
5391 | section relative. */ | |
5392 | case R_PPC64_SECTOFF: | |
5393 | case R_PPC64_SECTOFF_LO: | |
5394 | case R_PPC64_SECTOFF_HI: | |
5395 | case R_PPC64_SECTOFF_HA: | |
5396 | case R_PPC64_SECTOFF_DS: | |
5397 | case R_PPC64_SECTOFF_LO_DS: | |
411e1bfb AM |
5398 | case R_PPC64_DTPREL16: |
5399 | case R_PPC64_DTPREL16_LO: | |
5400 | case R_PPC64_DTPREL16_HI: | |
5401 | case R_PPC64_DTPREL16_HA: | |
5402 | case R_PPC64_DTPREL16_DS: | |
5403 | case R_PPC64_DTPREL16_LO_DS: | |
f9c6b907 AM |
5404 | case R_PPC64_DTPREL16_HIGH: |
5405 | case R_PPC64_DTPREL16_HIGHA: | |
411e1bfb AM |
5406 | case R_PPC64_DTPREL16_HIGHER: |
5407 | case R_PPC64_DTPREL16_HIGHERA: | |
5408 | case R_PPC64_DTPREL16_HIGHEST: | |
5409 | case R_PPC64_DTPREL16_HIGHESTA: | |
5bd4f169 AM |
5410 | break; |
5411 | ||
ad8e1ba5 | 5412 | /* Nor do these. */ |
25f23106 AM |
5413 | case R_PPC64_REL16: |
5414 | case R_PPC64_REL16_LO: | |
5415 | case R_PPC64_REL16_HI: | |
5416 | case R_PPC64_REL16_HA: | |
5417 | break; | |
5418 | ||
45965137 AM |
5419 | /* Not supported as a dynamic relocation. */ |
5420 | case R_PPC64_ADDR64_LOCAL: | |
5421 | if (info->shared) | |
5422 | { | |
5423 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) | |
5424 | ppc_howto_init (); | |
5425 | info->callbacks->einfo (_("%P: %H: %s reloc unsupported " | |
5426 | "in shared libraries and PIEs.\n"), | |
5427 | abfd, sec, rel->r_offset, | |
5428 | ppc64_elf_howto_table[r_type]->name); | |
5429 | bfd_set_error (bfd_error_bad_value); | |
5430 | return FALSE; | |
5431 | } | |
5432 | break; | |
5433 | ||
ad8e1ba5 | 5434 | case R_PPC64_TOC16: |
33c0ec9d AM |
5435 | case R_PPC64_TOC16_DS: |
5436 | htab->do_multi_toc = 1; | |
d77c8a4b | 5437 | ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1; |
ad8e1ba5 AM |
5438 | case R_PPC64_TOC16_LO: |
5439 | case R_PPC64_TOC16_HI: | |
5440 | case R_PPC64_TOC16_HA: | |
ad8e1ba5 | 5441 | case R_PPC64_TOC16_LO_DS: |
4c52953f | 5442 | sec->has_toc_reloc = 1; |
ad8e1ba5 AM |
5443 | break; |
5444 | ||
5bd4f169 AM |
5445 | /* This relocation describes the C++ object vtable hierarchy. |
5446 | Reconstruct it for later use during GC. */ | |
5447 | case R_PPC64_GNU_VTINHERIT: | |
c152c796 | 5448 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
b34976b6 | 5449 | return FALSE; |
5bd4f169 AM |
5450 | break; |
5451 | ||
5452 | /* This relocation describes which C++ vtable entries are actually | |
5453 | used. Record for later use during GC. */ | |
5454 | case R_PPC64_GNU_VTENTRY: | |
d17e0c6e JB |
5455 | BFD_ASSERT (h != NULL); |
5456 | if (h != NULL | |
5457 | && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) | |
b34976b6 | 5458 | return FALSE; |
5bd4f169 AM |
5459 | break; |
5460 | ||
721956f4 AM |
5461 | case R_PPC64_REL14: |
5462 | case R_PPC64_REL14_BRTAKEN: | |
5463 | case R_PPC64_REL14_BRNTAKEN: | |
220c76dd AM |
5464 | { |
5465 | asection *dest = NULL; | |
5466 | ||
5467 | /* Heuristic: If jumping outside our section, chances are | |
5468 | we are going to need a stub. */ | |
5469 | if (h != NULL) | |
5470 | { | |
5471 | /* If the sym is weak it may be overridden later, so | |
5472 | don't assume we know where a weak sym lives. */ | |
5473 | if (h->root.type == bfd_link_hash_defined) | |
5474 | dest = h->root.u.def.section; | |
5475 | } | |
5476 | else | |
87d72d41 AM |
5477 | { |
5478 | Elf_Internal_Sym *isym; | |
5479 | ||
5480 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, | |
5481 | abfd, r_symndx); | |
5482 | if (isym == NULL) | |
5483 | return FALSE; | |
5484 | ||
5485 | dest = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
5486 | } | |
5487 | ||
220c76dd | 5488 | if (dest != sec) |
7c8fe5c4 | 5489 | ppc64_elf_section_data (sec)->has_14bit_branch = 1; |
220c76dd | 5490 | } |
721956f4 AM |
5491 | /* Fall through. */ |
5492 | ||
5d1634d7 | 5493 | case R_PPC64_REL24: |
e054468f | 5494 | if (h != NULL && ifunc == NULL) |
5d1634d7 AM |
5495 | { |
5496 | /* We may need a .plt entry if the function this reloc | |
5497 | refers to is in a shared lib. */ | |
e054468f | 5498 | if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend)) |
411e1bfb | 5499 | return FALSE; |
e054468f AM |
5500 | h->needs_plt = 1; |
5501 | if (h->root.root.string[0] == '.' | |
5502 | && h->root.root.string[1] != '\0') | |
5503 | ((struct ppc_link_hash_entry *) h)->is_func = 1; | |
3a71aa26 | 5504 | if (h == tga || h == dottga) |
411e1bfb | 5505 | sec->has_tls_reloc = 1; |
411e1bfb AM |
5506 | } |
5507 | break; | |
5508 | ||
5509 | case R_PPC64_TPREL64: | |
5510 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_TPREL; | |
1d483afe | 5511 | if (!info->executable) |
411e1bfb AM |
5512 | info->flags |= DF_STATIC_TLS; |
5513 | goto dotlstoc; | |
5514 | ||
5515 | case R_PPC64_DTPMOD64: | |
5516 | if (rel + 1 < rel_end | |
5517 | && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64) | |
5518 | && rel[1].r_offset == rel->r_offset + 8) | |
951fd09b | 5519 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_GD; |
411e1bfb | 5520 | else |
951fd09b | 5521 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_LD; |
411e1bfb AM |
5522 | goto dotlstoc; |
5523 | ||
5524 | case R_PPC64_DTPREL64: | |
5525 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_DTPREL; | |
5526 | if (rel != relocs | |
5527 | && rel[-1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPMOD64) | |
5528 | && rel[-1].r_offset == rel->r_offset - 8) | |
5529 | /* This is the second reloc of a dtpmod, dtprel pair. | |
5530 | Don't mark with TLS_DTPREL. */ | |
5531 | goto dodyn; | |
5532 | ||
5533 | dotlstoc: | |
5534 | sec->has_tls_reloc = 1; | |
5535 | if (h != NULL) | |
5536 | { | |
5537 | struct ppc_link_hash_entry *eh; | |
5538 | eh = (struct ppc_link_hash_entry *) h; | |
e7b938ca | 5539 | eh->tls_mask |= tls_type; |
411e1bfb AM |
5540 | } |
5541 | else | |
5542 | if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
5543 | rel->r_addend, tls_type)) | |
5544 | return FALSE; | |
5545 | ||
7c8fe5c4 AM |
5546 | ppc64_sec = ppc64_elf_section_data (sec); |
5547 | if (ppc64_sec->sec_type != sec_toc) | |
411e1bfb | 5548 | { |
3a71aa26 AM |
5549 | bfd_size_type amt; |
5550 | ||
e7b938ca | 5551 | /* One extra to simplify get_tls_mask. */ |
3a71aa26 AM |
5552 | amt = sec->size * sizeof (unsigned) / 8 + sizeof (unsigned); |
5553 | ppc64_sec->u.toc.symndx = bfd_zalloc (abfd, amt); | |
5554 | if (ppc64_sec->u.toc.symndx == NULL) | |
5555 | return FALSE; | |
5556 | amt = sec->size * sizeof (bfd_vma) / 8; | |
5557 | ppc64_sec->u.toc.add = bfd_zalloc (abfd, amt); | |
5558 | if (ppc64_sec->u.toc.add == NULL) | |
411e1bfb | 5559 | return FALSE; |
7c8fe5c4 AM |
5560 | BFD_ASSERT (ppc64_sec->sec_type == sec_normal); |
5561 | ppc64_sec->sec_type = sec_toc; | |
411e1bfb AM |
5562 | } |
5563 | BFD_ASSERT (rel->r_offset % 8 == 0); | |
3a71aa26 AM |
5564 | ppc64_sec->u.toc.symndx[rel->r_offset / 8] = r_symndx; |
5565 | ppc64_sec->u.toc.add[rel->r_offset / 8] = rel->r_addend; | |
951fd09b AM |
5566 | |
5567 | /* Mark the second slot of a GD or LD entry. | |
5568 | -1 to indicate GD and -2 to indicate LD. */ | |
5569 | if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_GD)) | |
3a71aa26 | 5570 | ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -1; |
951fd09b | 5571 | else if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_LD)) |
3a71aa26 | 5572 | ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -2; |
411e1bfb AM |
5573 | goto dodyn; |
5574 | ||
5575 | case R_PPC64_TPREL16: | |
5576 | case R_PPC64_TPREL16_LO: | |
5577 | case R_PPC64_TPREL16_HI: | |
5578 | case R_PPC64_TPREL16_HA: | |
5579 | case R_PPC64_TPREL16_DS: | |
5580 | case R_PPC64_TPREL16_LO_DS: | |
f9c6b907 AM |
5581 | case R_PPC64_TPREL16_HIGH: |
5582 | case R_PPC64_TPREL16_HIGHA: | |
411e1bfb AM |
5583 | case R_PPC64_TPREL16_HIGHER: |
5584 | case R_PPC64_TPREL16_HIGHERA: | |
5585 | case R_PPC64_TPREL16_HIGHEST: | |
5586 | case R_PPC64_TPREL16_HIGHESTA: | |
5587 | if (info->shared) | |
5588 | { | |
1d483afe AM |
5589 | if (!info->executable) |
5590 | info->flags |= DF_STATIC_TLS; | |
411e1bfb | 5591 | goto dodyn; |
5d1634d7 AM |
5592 | } |
5593 | break; | |
5594 | ||
e86ce104 | 5595 | case R_PPC64_ADDR64: |
1e2f5b6e | 5596 | if (opd_sym_map != NULL |
1e2f5b6e | 5597 | && rel + 1 < rel_end |
4ce794b7 | 5598 | && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC) |
1e2f5b6e | 5599 | { |
8387904d AM |
5600 | if (h != NULL) |
5601 | { | |
5602 | if (h->root.root.string[0] == '.' | |
5603 | && h->root.root.string[1] != 0 | |
b31867b6 | 5604 | && lookup_fdh ((struct ppc_link_hash_entry *) h, htab)) |
8387904d AM |
5605 | ; |
5606 | else | |
5607 | ((struct ppc_link_hash_entry *) h)->is_func = 1; | |
5608 | } | |
5609 | else | |
5610 | { | |
5611 | asection *s; | |
87d72d41 | 5612 | Elf_Internal_Sym *isym; |
1e2f5b6e | 5613 | |
87d72d41 AM |
5614 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, |
5615 | abfd, r_symndx); | |
5616 | if (isym == NULL) | |
8387904d | 5617 | return FALSE; |
87d72d41 AM |
5618 | |
5619 | s = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
5620 | if (s != NULL && s != sec) | |
3f764659 | 5621 | opd_sym_map[rel->r_offset / 8] = s; |
8387904d | 5622 | } |
1e2f5b6e | 5623 | } |
e86ce104 AM |
5624 | /* Fall through. */ |
5625 | ||
65f38f15 AM |
5626 | case R_PPC64_ADDR16: |
5627 | case R_PPC64_ADDR16_DS: | |
5628 | case R_PPC64_ADDR16_HA: | |
5629 | case R_PPC64_ADDR16_HI: | |
f9c6b907 AM |
5630 | case R_PPC64_ADDR16_HIGH: |
5631 | case R_PPC64_ADDR16_HIGHA: | |
65f38f15 AM |
5632 | case R_PPC64_ADDR16_HIGHER: |
5633 | case R_PPC64_ADDR16_HIGHERA: | |
5634 | case R_PPC64_ADDR16_HIGHEST: | |
5635 | case R_PPC64_ADDR16_HIGHESTA: | |
5636 | case R_PPC64_ADDR16_LO: | |
5637 | case R_PPC64_ADDR16_LO_DS: | |
a345bc8d AM |
5638 | if (h != NULL && !info->shared && abiversion (abfd) == 2 |
5639 | && rel->r_addend == 0) | |
5640 | { | |
5641 | /* We may need a .plt entry if this reloc refers to a | |
5642 | function in a shared lib. */ | |
5643 | if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend)) | |
5644 | return FALSE; | |
5645 | h->pointer_equality_needed = 1; | |
5646 | } | |
5647 | /* Fall through. */ | |
5648 | ||
5649 | case R_PPC64_REL30: | |
5650 | case R_PPC64_REL32: | |
5651 | case R_PPC64_REL64: | |
5652 | case R_PPC64_ADDR14: | |
5653 | case R_PPC64_ADDR14_BRNTAKEN: | |
5654 | case R_PPC64_ADDR14_BRTAKEN: | |
65f38f15 | 5655 | case R_PPC64_ADDR24: |
65f38f15 | 5656 | case R_PPC64_ADDR32: |
65f38f15 AM |
5657 | case R_PPC64_UADDR16: |
5658 | case R_PPC64_UADDR32: | |
5659 | case R_PPC64_UADDR64: | |
5bd4f169 | 5660 | case R_PPC64_TOC: |
81848ca0 AM |
5661 | if (h != NULL && !info->shared) |
5662 | /* We may need a copy reloc. */ | |
f5385ebf | 5663 | h->non_got_ref = 1; |
81848ca0 | 5664 | |
41bd81ab | 5665 | /* Don't propagate .opd relocs. */ |
1e2f5b6e | 5666 | if (NO_OPD_RELOCS && opd_sym_map != NULL) |
e86ce104 | 5667 | break; |
e86ce104 | 5668 | |
65f38f15 AM |
5669 | /* If we are creating a shared library, and this is a reloc |
5670 | against a global symbol, or a non PC relative reloc | |
5671 | against a local symbol, then we need to copy the reloc | |
5672 | into the shared library. However, if we are linking with | |
5673 | -Bsymbolic, we do not need to copy a reloc against a | |
5674 | global symbol which is defined in an object we are | |
5675 | including in the link (i.e., DEF_REGULAR is set). At | |
5676 | this point we have not seen all the input files, so it is | |
5677 | possible that DEF_REGULAR is not set now but will be set | |
5678 | later (it is never cleared). In case of a weak definition, | |
5679 | DEF_REGULAR may be cleared later by a strong definition in | |
5680 | a shared library. We account for that possibility below by | |
f4656909 | 5681 | storing information in the dyn_relocs field of the hash |
65f38f15 AM |
5682 | table entry. A similar situation occurs when creating |
5683 | shared libraries and symbol visibility changes render the | |
5684 | symbol local. | |
5685 | ||
5686 | If on the other hand, we are creating an executable, we | |
5687 | may need to keep relocations for symbols satisfied by a | |
5688 | dynamic library if we manage to avoid copy relocs for the | |
5689 | symbol. */ | |
411e1bfb | 5690 | dodyn: |
65f38f15 | 5691 | if ((info->shared |
1d483afe | 5692 | && (must_be_dyn_reloc (info, r_type) |
65f38f15 | 5693 | || (h != NULL |
198f1157 | 5694 | && (!SYMBOLIC_BIND (info, h) |
65f38f15 | 5695 | || h->root.type == bfd_link_hash_defweak |
f5385ebf | 5696 | || !h->def_regular)))) |
f4656909 AM |
5697 | || (ELIMINATE_COPY_RELOCS |
5698 | && !info->shared | |
65f38f15 AM |
5699 | && h != NULL |
5700 | && (h->root.type == bfd_link_hash_defweak | |
25f23106 AM |
5701 | || !h->def_regular)) |
5702 | || (!info->shared | |
5703 | && ifunc != NULL)) | |
5bd4f169 | 5704 | { |
65f38f15 AM |
5705 | /* We must copy these reloc types into the output file. |
5706 | Create a reloc section in dynobj and make room for | |
5707 | this reloc. */ | |
5bd4f169 AM |
5708 | if (sreloc == NULL) |
5709 | { | |
83bac4b0 NC |
5710 | sreloc = _bfd_elf_make_dynamic_reloc_section |
5711 | (sec, htab->elf.dynobj, 3, abfd, /*rela?*/ TRUE); | |
65f38f15 | 5712 | |
5bd4f169 | 5713 | if (sreloc == NULL) |
83bac4b0 | 5714 | return FALSE; |
5bd4f169 AM |
5715 | } |
5716 | ||
65f38f15 AM |
5717 | /* If this is a global symbol, we count the number of |
5718 | relocations we need for this symbol. */ | |
5719 | if (h != NULL) | |
5720 | { | |
19e08130 AM |
5721 | struct elf_dyn_relocs *p; |
5722 | struct elf_dyn_relocs **head; | |
5723 | ||
ec338859 | 5724 | head = &((struct ppc_link_hash_entry *) h)->dyn_relocs; |
19e08130 AM |
5725 | p = *head; |
5726 | if (p == NULL || p->sec != sec) | |
5727 | { | |
5728 | p = bfd_alloc (htab->elf.dynobj, sizeof *p); | |
5729 | if (p == NULL) | |
5730 | return FALSE; | |
5731 | p->next = *head; | |
5732 | *head = p; | |
5733 | p->sec = sec; | |
5734 | p->count = 0; | |
5735 | p->pc_count = 0; | |
5736 | } | |
5737 | p->count += 1; | |
5738 | if (!must_be_dyn_reloc (info, r_type)) | |
5739 | p->pc_count += 1; | |
65f38f15 AM |
5740 | } |
5741 | else | |
5742 | { | |
ec338859 AM |
5743 | /* Track dynamic relocs needed for local syms too. |
5744 | We really need local syms available to do this | |
5745 | easily. Oh well. */ | |
19e08130 AM |
5746 | struct ppc_dyn_relocs *p; |
5747 | struct ppc_dyn_relocs **head; | |
5748 | bfd_boolean is_ifunc; | |
ec338859 | 5749 | asection *s; |
6edfbbad | 5750 | void *vpp; |
87d72d41 | 5751 | Elf_Internal_Sym *isym; |
6edfbbad | 5752 | |
87d72d41 AM |
5753 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, |
5754 | abfd, r_symndx); | |
5755 | if (isym == NULL) | |
b34976b6 | 5756 | return FALSE; |
ec338859 | 5757 | |
87d72d41 AM |
5758 | s = bfd_section_from_elf_index (abfd, isym->st_shndx); |
5759 | if (s == NULL) | |
5760 | s = sec; | |
5761 | ||
6edfbbad | 5762 | vpp = &elf_section_data (s)->local_dynrel; |
19e08130 AM |
5763 | head = (struct ppc_dyn_relocs **) vpp; |
5764 | is_ifunc = ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC; | |
5765 | p = *head; | |
5766 | if (p != NULL && p->sec == sec && p->ifunc != is_ifunc) | |
5767 | p = p->next; | |
5768 | if (p == NULL || p->sec != sec || p->ifunc != is_ifunc) | |
5769 | { | |
5770 | p = bfd_alloc (htab->elf.dynobj, sizeof *p); | |
5771 | if (p == NULL) | |
5772 | return FALSE; | |
5773 | p->next = *head; | |
5774 | *head = p; | |
5775 | p->sec = sec; | |
5776 | p->ifunc = is_ifunc; | |
5777 | p->count = 0; | |
5778 | } | |
5779 | p->count += 1; | |
ec338859 | 5780 | } |
65f38f15 | 5781 | } |
5bd4f169 | 5782 | break; |
65f38f15 AM |
5783 | |
5784 | default: | |
96e0dda4 | 5785 | break; |
5bd4f169 AM |
5786 | } |
5787 | } | |
5788 | ||
b34976b6 | 5789 | return TRUE; |
5bd4f169 AM |
5790 | } |
5791 | ||
ee67d69a AM |
5792 | /* Merge backend specific data from an object file to the output |
5793 | object file when linking. */ | |
5794 | ||
5795 | static bfd_boolean | |
5796 | ppc64_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd) | |
5797 | { | |
5798 | unsigned long iflags, oflags; | |
5799 | ||
5800 | if ((ibfd->flags & BFD_LINKER_CREATED) != 0) | |
5801 | return TRUE; | |
5802 | ||
5803 | if (!is_ppc64_elf (ibfd) || !is_ppc64_elf (obfd)) | |
5804 | return TRUE; | |
5805 | ||
5806 | if (!_bfd_generic_verify_endian_match (ibfd, obfd)) | |
5807 | return FALSE; | |
5808 | ||
5809 | iflags = elf_elfheader (ibfd)->e_flags; | |
5810 | oflags = elf_elfheader (obfd)->e_flags; | |
5811 | ||
5812 | if (!elf_flags_init (obfd) || oflags == 0) | |
5813 | { | |
5814 | elf_flags_init (obfd) = TRUE; | |
5815 | elf_elfheader (obfd)->e_flags = iflags; | |
5816 | } | |
5817 | else if (iflags == oflags || iflags == 0) | |
5818 | ; | |
5819 | else if (iflags & ~EF_PPC64_ABI) | |
5820 | { | |
5821 | (*_bfd_error_handler) | |
5822 | (_("%B uses unknown e_flags 0x%lx"), ibfd, iflags); | |
5823 | bfd_set_error (bfd_error_bad_value); | |
5824 | return FALSE; | |
5825 | } | |
5826 | else | |
5827 | { | |
5828 | (*_bfd_error_handler) | |
5829 | (_("%B: ABI version %ld is not compatible with ABI version %ld output"), | |
5830 | ibfd, iflags, oflags); | |
5831 | bfd_set_error (bfd_error_bad_value); | |
5832 | return FALSE; | |
5833 | } | |
5834 | ||
5835 | /* Merge Tag_compatibility attributes and any common GNU ones. */ | |
5836 | _bfd_elf_merge_object_attributes (ibfd, obfd); | |
5837 | ||
5838 | return TRUE; | |
5839 | } | |
5840 | ||
5841 | static bfd_boolean | |
5842 | ppc64_elf_print_private_bfd_data (bfd *abfd, void *ptr) | |
5843 | { | |
5844 | /* Print normal ELF private data. */ | |
5845 | _bfd_elf_print_private_bfd_data (abfd, ptr); | |
5846 | ||
5847 | if (elf_elfheader (abfd)->e_flags != 0) | |
5848 | { | |
5849 | FILE *file = ptr; | |
5850 | ||
5851 | /* xgettext:c-format */ | |
5852 | fprintf (file, _("private flags = 0x%lx:"), | |
5853 | elf_elfheader (abfd)->e_flags); | |
5854 | ||
5855 | if ((elf_elfheader (abfd)->e_flags & EF_PPC64_ABI) != 0) | |
5856 | fprintf (file, _(" [abiv%ld]"), | |
5857 | elf_elfheader (abfd)->e_flags & EF_PPC64_ABI); | |
5858 | fputc ('\n', file); | |
5859 | } | |
5860 | ||
5861 | return TRUE; | |
5862 | } | |
5863 | ||
8387904d AM |
5864 | /* OFFSET in OPD_SEC specifies a function descriptor. Return the address |
5865 | of the code entry point, and its section. */ | |
5866 | ||
5867 | static bfd_vma | |
5868 | opd_entry_value (asection *opd_sec, | |
5869 | bfd_vma offset, | |
5870 | asection **code_sec, | |
aef36ac1 AM |
5871 | bfd_vma *code_off, |
5872 | bfd_boolean in_code_sec) | |
8387904d AM |
5873 | { |
5874 | bfd *opd_bfd = opd_sec->owner; | |
8860955f | 5875 | Elf_Internal_Rela *relocs; |
8387904d | 5876 | Elf_Internal_Rela *lo, *hi, *look; |
645ea6a9 | 5877 | bfd_vma val; |
8387904d | 5878 | |
9f296da3 AM |
5879 | /* No relocs implies we are linking a --just-symbols object, or looking |
5880 | at a final linked executable with addr2line or somesuch. */ | |
4b85d634 AM |
5881 | if (opd_sec->reloc_count == 0) |
5882 | { | |
729eabd5 | 5883 | bfd_byte *contents = ppc64_elf_tdata (opd_bfd)->opd.contents; |
3b36f7e6 | 5884 | |
729eabd5 AM |
5885 | if (contents == NULL) |
5886 | { | |
5887 | if (!bfd_malloc_and_get_section (opd_bfd, opd_sec, &contents)) | |
5888 | return (bfd_vma) -1; | |
5889 | ppc64_elf_tdata (opd_bfd)->opd.contents = contents; | |
5890 | } | |
ee1e4ede | 5891 | |
729eabd5 | 5892 | val = bfd_get_64 (opd_bfd, contents + offset); |
aef36ac1 AM |
5893 | if (code_sec != NULL) |
5894 | { | |
5895 | asection *sec, *likely = NULL; | |
ee1e4ede | 5896 | |
aef36ac1 | 5897 | if (in_code_sec) |
4b85d634 | 5898 | { |
aef36ac1 AM |
5899 | sec = *code_sec; |
5900 | if (sec->vma <= val | |
5901 | && val < sec->vma + sec->size) | |
5902 | likely = sec; | |
5903 | else | |
5904 | val = -1; | |
5905 | } | |
5906 | else | |
5907 | for (sec = opd_bfd->sections; sec != NULL; sec = sec->next) | |
5908 | if (sec->vma <= val | |
5909 | && (sec->flags & SEC_LOAD) != 0 | |
5910 | && (sec->flags & SEC_ALLOC) != 0) | |
5911 | likely = sec; | |
5912 | if (likely != NULL) | |
5913 | { | |
5914 | *code_sec = likely; | |
5915 | if (code_off != NULL) | |
5916 | *code_off = val - likely->vma; | |
4b85d634 AM |
5917 | } |
5918 | } | |
aef36ac1 | 5919 | return val; |
4b85d634 AM |
5920 | } |
5921 | ||
0c8d6e5c | 5922 | BFD_ASSERT (is_ppc64_elf (opd_bfd)); |
0ffa91dd | 5923 | |
729eabd5 | 5924 | relocs = ppc64_elf_tdata (opd_bfd)->opd.relocs; |
8860955f AM |
5925 | if (relocs == NULL) |
5926 | relocs = _bfd_elf_link_read_relocs (opd_bfd, opd_sec, NULL, NULL, TRUE); | |
645ea6a9 | 5927 | |
8387904d | 5928 | /* Go find the opd reloc at the sym address. */ |
8860955f | 5929 | lo = relocs; |
8387904d AM |
5930 | BFD_ASSERT (lo != NULL); |
5931 | hi = lo + opd_sec->reloc_count - 1; /* ignore last reloc */ | |
645ea6a9 | 5932 | val = (bfd_vma) -1; |
8387904d AM |
5933 | while (lo < hi) |
5934 | { | |
5935 | look = lo + (hi - lo) / 2; | |
5936 | if (look->r_offset < offset) | |
5937 | lo = look + 1; | |
5938 | else if (look->r_offset > offset) | |
5939 | hi = look; | |
5940 | else | |
5941 | { | |
0ffa91dd NC |
5942 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (opd_bfd); |
5943 | ||
8387904d AM |
5944 | if (ELF64_R_TYPE (look->r_info) == R_PPC64_ADDR64 |
5945 | && ELF64_R_TYPE ((look + 1)->r_info) == R_PPC64_TOC) | |
5946 | { | |
5947 | unsigned long symndx = ELF64_R_SYM (look->r_info); | |
8387904d AM |
5948 | asection *sec; |
5949 | ||
62599110 AM |
5950 | if (symndx < symtab_hdr->sh_info |
5951 | || elf_sym_hashes (opd_bfd) == NULL) | |
8387904d AM |
5952 | { |
5953 | Elf_Internal_Sym *sym; | |
5954 | ||
5955 | sym = (Elf_Internal_Sym *) symtab_hdr->contents; | |
5956 | if (sym == NULL) | |
5957 | { | |
62599110 AM |
5958 | size_t symcnt = symtab_hdr->sh_info; |
5959 | if (elf_sym_hashes (opd_bfd) == NULL) | |
5960 | symcnt = symtab_hdr->sh_size / symtab_hdr->sh_entsize; | |
5961 | sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr, symcnt, | |
8387904d AM |
5962 | 0, NULL, NULL, NULL); |
5963 | if (sym == NULL) | |
645ea6a9 | 5964 | break; |
8387904d AM |
5965 | symtab_hdr->contents = (bfd_byte *) sym; |
5966 | } | |
5967 | ||
5968 | sym += symndx; | |
5969 | val = sym->st_value; | |
cb33740c | 5970 | sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx); |
8387904d AM |
5971 | BFD_ASSERT ((sec->flags & SEC_MERGE) == 0); |
5972 | } | |
5973 | else | |
5974 | { | |
5975 | struct elf_link_hash_entry **sym_hashes; | |
5976 | struct elf_link_hash_entry *rh; | |
5977 | ||
5978 | sym_hashes = elf_sym_hashes (opd_bfd); | |
5979 | rh = sym_hashes[symndx - symtab_hdr->sh_info]; | |
128205bb AM |
5980 | if (rh != NULL) |
5981 | { | |
5982 | rh = elf_follow_link (rh); | |
5983 | BFD_ASSERT (rh->root.type == bfd_link_hash_defined | |
5984 | || rh->root.type == bfd_link_hash_defweak); | |
5985 | val = rh->root.u.def.value; | |
5986 | sec = rh->root.u.def.section; | |
5987 | } | |
5988 | else | |
5989 | { | |
5990 | /* Handle the odd case where we can be called | |
5991 | during bfd_elf_link_add_symbols before the | |
5992 | symbol hashes have been fully populated. */ | |
5993 | Elf_Internal_Sym *sym; | |
5994 | ||
5995 | sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr, 1, | |
5996 | symndx, NULL, NULL, NULL); | |
5997 | if (sym == NULL) | |
5998 | break; | |
5999 | ||
6000 | val = sym->st_value; | |
6001 | sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx); | |
6002 | free (sym); | |
6003 | } | |
8387904d AM |
6004 | } |
6005 | val += look->r_addend; | |
6006 | if (code_off != NULL) | |
6007 | *code_off = val; | |
6008 | if (code_sec != NULL) | |
aef36ac1 AM |
6009 | { |
6010 | if (in_code_sec && *code_sec != sec) | |
6011 | return -1; | |
6012 | else | |
6013 | *code_sec = sec; | |
6014 | } | |
8387904d AM |
6015 | if (sec != NULL && sec->output_section != NULL) |
6016 | val += sec->output_section->vma + sec->output_offset; | |
8387904d AM |
6017 | } |
6018 | break; | |
6019 | } | |
6020 | } | |
645ea6a9 | 6021 | |
645ea6a9 | 6022 | return val; |
8387904d AM |
6023 | } |
6024 | ||
aef36ac1 AM |
6025 | /* If the ELF symbol SYM might be a function in SEC, return the |
6026 | function size and set *CODE_OFF to the function's entry point, | |
6027 | otherwise return zero. */ | |
9f296da3 | 6028 | |
aef36ac1 AM |
6029 | static bfd_size_type |
6030 | ppc64_elf_maybe_function_sym (const asymbol *sym, asection *sec, | |
6031 | bfd_vma *code_off) | |
9f296da3 | 6032 | { |
aef36ac1 AM |
6033 | bfd_size_type size; |
6034 | ||
6035 | if ((sym->flags & (BSF_SECTION_SYM | BSF_FILE | BSF_OBJECT | |
6036 | | BSF_THREAD_LOCAL | BSF_RELC | BSF_SRELC)) != 0) | |
6037 | return 0; | |
6038 | ||
6039 | size = 0; | |
6040 | if (!(sym->flags & BSF_SYNTHETIC)) | |
6041 | size = ((elf_symbol_type *) sym)->internal_elf_sym.st_size; | |
6042 | ||
6043 | if (strcmp (sym->section->name, ".opd") == 0) | |
9f296da3 | 6044 | { |
aef36ac1 AM |
6045 | if (opd_entry_value (sym->section, sym->value, |
6046 | &sec, code_off, TRUE) == (bfd_vma) -1) | |
6047 | return 0; | |
6048 | /* An old ABI binary with dot-syms has a size of 24 on the .opd | |
6049 | symbol. This size has nothing to do with the code size of the | |
6050 | function, which is what we're supposed to return, but the | |
6051 | code size isn't available without looking up the dot-sym. | |
6052 | However, doing that would be a waste of time particularly | |
6053 | since elf_find_function will look at the dot-sym anyway. | |
6054 | Now, elf_find_function will keep the largest size of any | |
6055 | function sym found at the code address of interest, so return | |
6056 | 1 here to avoid it incorrectly caching a larger function size | |
6057 | for a small function. This does mean we return the wrong | |
6058 | size for a new-ABI function of size 24, but all that does is | |
6059 | disable caching for such functions. */ | |
6060 | if (size == 24) | |
6061 | size = 1; | |
9f296da3 | 6062 | } |
aef36ac1 AM |
6063 | else |
6064 | { | |
6065 | if (sym->section != sec) | |
6066 | return 0; | |
6067 | *code_off = sym->value; | |
6068 | } | |
6069 | if (size == 0) | |
6070 | size = 1; | |
6071 | return size; | |
9f296da3 AM |
6072 | } |
6073 | ||
854b41e7 AM |
6074 | /* Return true if symbol is defined in a regular object file. */ |
6075 | ||
6076 | static bfd_boolean | |
6077 | is_static_defined (struct elf_link_hash_entry *h) | |
6078 | { | |
6079 | return ((h->root.type == bfd_link_hash_defined | |
6080 | || h->root.type == bfd_link_hash_defweak) | |
6081 | && h->root.u.def.section != NULL | |
6082 | && h->root.u.def.section->output_section != NULL); | |
6083 | } | |
6084 | ||
b31867b6 AM |
6085 | /* If FDH is a function descriptor symbol, return the associated code |
6086 | entry symbol if it is defined. Return NULL otherwise. */ | |
6087 | ||
6088 | static struct ppc_link_hash_entry * | |
6089 | defined_code_entry (struct ppc_link_hash_entry *fdh) | |
6090 | { | |
6091 | if (fdh->is_func_descriptor) | |
6092 | { | |
6093 | struct ppc_link_hash_entry *fh = ppc_follow_link (fdh->oh); | |
6094 | if (fh->elf.root.type == bfd_link_hash_defined | |
6095 | || fh->elf.root.type == bfd_link_hash_defweak) | |
6096 | return fh; | |
6097 | } | |
6098 | return NULL; | |
6099 | } | |
6100 | ||
6101 | /* If FH is a function code entry symbol, return the associated | |
6102 | function descriptor symbol if it is defined. Return NULL otherwise. */ | |
6103 | ||
6104 | static struct ppc_link_hash_entry * | |
6105 | defined_func_desc (struct ppc_link_hash_entry *fh) | |
6106 | { | |
6107 | if (fh->oh != NULL | |
6108 | && fh->oh->is_func_descriptor) | |
6109 | { | |
6110 | struct ppc_link_hash_entry *fdh = ppc_follow_link (fh->oh); | |
6111 | if (fdh->elf.root.type == bfd_link_hash_defined | |
6112 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
6113 | return fdh; | |
6114 | } | |
6115 | return NULL; | |
6116 | } | |
6117 | ||
74f0fb50 AM |
6118 | /* Mark all our entry sym sections, both opd and code section. */ |
6119 | ||
6120 | static void | |
6121 | ppc64_elf_gc_keep (struct bfd_link_info *info) | |
6122 | { | |
6123 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
6124 | struct bfd_sym_chain *sym; | |
6125 | ||
4dfe6ac6 NC |
6126 | if (htab == NULL) |
6127 | return; | |
6128 | ||
74f0fb50 AM |
6129 | for (sym = info->gc_sym_list; sym != NULL; sym = sym->next) |
6130 | { | |
b31867b6 | 6131 | struct ppc_link_hash_entry *eh, *fh; |
74f0fb50 AM |
6132 | asection *sec; |
6133 | ||
6134 | eh = (struct ppc_link_hash_entry *) | |
b31867b6 | 6135 | elf_link_hash_lookup (&htab->elf, sym->name, FALSE, FALSE, TRUE); |
74f0fb50 AM |
6136 | if (eh == NULL) |
6137 | continue; | |
6138 | if (eh->elf.root.type != bfd_link_hash_defined | |
6139 | && eh->elf.root.type != bfd_link_hash_defweak) | |
6140 | continue; | |
6141 | ||
b31867b6 AM |
6142 | fh = defined_code_entry (eh); |
6143 | if (fh != NULL) | |
74f0fb50 | 6144 | { |
b31867b6 | 6145 | sec = fh->elf.root.u.def.section; |
74f0fb50 AM |
6146 | sec->flags |= SEC_KEEP; |
6147 | } | |
6148 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL | |
6149 | && opd_entry_value (eh->elf.root.u.def.section, | |
6150 | eh->elf.root.u.def.value, | |
aef36ac1 | 6151 | &sec, NULL, FALSE) != (bfd_vma) -1) |
74f0fb50 AM |
6152 | sec->flags |= SEC_KEEP; |
6153 | ||
6154 | sec = eh->elf.root.u.def.section; | |
6155 | sec->flags |= SEC_KEEP; | |
6156 | } | |
6157 | } | |
6158 | ||
64d03ab5 AM |
6159 | /* Mark sections containing dynamically referenced symbols. When |
6160 | building shared libraries, we must assume that any visible symbol is | |
6161 | referenced. */ | |
6162 | ||
6163 | static bfd_boolean | |
6164 | ppc64_elf_gc_mark_dynamic_ref (struct elf_link_hash_entry *h, void *inf) | |
6165 | { | |
6166 | struct bfd_link_info *info = (struct bfd_link_info *) inf; | |
6167 | struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h; | |
b31867b6 | 6168 | struct ppc_link_hash_entry *fdh; |
b407645f | 6169 | struct bfd_elf_dynamic_list *d = info->dynamic_list; |
64d03ab5 | 6170 | |
64d03ab5 | 6171 | /* Dynamic linking info is on the func descriptor sym. */ |
b31867b6 AM |
6172 | fdh = defined_func_desc (eh); |
6173 | if (fdh != NULL) | |
6174 | eh = fdh; | |
64d03ab5 AM |
6175 | |
6176 | if ((eh->elf.root.type == bfd_link_hash_defined | |
6177 | || eh->elf.root.type == bfd_link_hash_defweak) | |
6178 | && (eh->elf.ref_dynamic | |
b407645f | 6179 | || (eh->elf.def_regular |
64d03ab5 | 6180 | && ELF_ST_VISIBILITY (eh->elf.other) != STV_INTERNAL |
4c58e0d8 | 6181 | && ELF_ST_VISIBILITY (eh->elf.other) != STV_HIDDEN |
b407645f AM |
6182 | && (!info->executable |
6183 | || info->export_dynamic | |
6184 | || (eh->elf.dynamic | |
6185 | && d != NULL | |
6186 | && (*d->match) (&d->head, NULL, eh->elf.root.root.string))) | |
4c58e0d8 AM |
6187 | && (strchr (eh->elf.root.root.string, ELF_VER_CHR) != NULL |
6188 | || !bfd_hide_sym_by_version (info->version_info, | |
6189 | eh->elf.root.root.string))))) | |
64d03ab5 AM |
6190 | { |
6191 | asection *code_sec; | |
b31867b6 | 6192 | struct ppc_link_hash_entry *fh; |
64d03ab5 AM |
6193 | |
6194 | eh->elf.root.u.def.section->flags |= SEC_KEEP; | |
6195 | ||
6196 | /* Function descriptor syms cause the associated | |
6197 | function code sym section to be marked. */ | |
b31867b6 AM |
6198 | fh = defined_code_entry (eh); |
6199 | if (fh != NULL) | |
6200 | { | |
6201 | code_sec = fh->elf.root.u.def.section; | |
6202 | code_sec->flags |= SEC_KEEP; | |
6203 | } | |
64d03ab5 AM |
6204 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL |
6205 | && opd_entry_value (eh->elf.root.u.def.section, | |
6206 | eh->elf.root.u.def.value, | |
aef36ac1 | 6207 | &code_sec, NULL, FALSE) != (bfd_vma) -1) |
64d03ab5 AM |
6208 | code_sec->flags |= SEC_KEEP; |
6209 | } | |
6210 | ||
6211 | return TRUE; | |
6212 | } | |
6213 | ||
5bd4f169 AM |
6214 | /* Return the section that should be marked against GC for a given |
6215 | relocation. */ | |
6216 | ||
6217 | static asection * | |
4ce794b7 | 6218 | ppc64_elf_gc_mark_hook (asection *sec, |
fb34365b | 6219 | struct bfd_link_info *info, |
4ce794b7 AM |
6220 | Elf_Internal_Rela *rel, |
6221 | struct elf_link_hash_entry *h, | |
6222 | Elf_Internal_Sym *sym) | |
5bd4f169 | 6223 | { |
ccfa59ea AM |
6224 | asection *rsec; |
6225 | ||
ccfa59ea AM |
6226 | /* Syms return NULL if we're marking .opd, so we avoid marking all |
6227 | function sections, as all functions are referenced in .opd. */ | |
6228 | rsec = NULL; | |
6229 | if (get_opd_info (sec) != NULL) | |
6230 | return rsec; | |
1e2f5b6e | 6231 | |
5bd4f169 AM |
6232 | if (h != NULL) |
6233 | { | |
04c9666a | 6234 | enum elf_ppc64_reloc_type r_type; |
b31867b6 | 6235 | struct ppc_link_hash_entry *eh, *fh, *fdh; |
a33d1f77 | 6236 | |
4ce794b7 | 6237 | r_type = ELF64_R_TYPE (rel->r_info); |
a33d1f77 | 6238 | switch (r_type) |
5bd4f169 AM |
6239 | { |
6240 | case R_PPC64_GNU_VTINHERIT: | |
6241 | case R_PPC64_GNU_VTENTRY: | |
6242 | break; | |
6243 | ||
6244 | default: | |
6245 | switch (h->root.type) | |
6246 | { | |
6247 | case bfd_link_hash_defined: | |
6248 | case bfd_link_hash_defweak: | |
ccfa59ea | 6249 | eh = (struct ppc_link_hash_entry *) h; |
b31867b6 AM |
6250 | fdh = defined_func_desc (eh); |
6251 | if (fdh != NULL) | |
6252 | eh = fdh; | |
1e2f5b6e AM |
6253 | |
6254 | /* Function descriptor syms cause the associated | |
6255 | function code sym section to be marked. */ | |
b31867b6 AM |
6256 | fh = defined_code_entry (eh); |
6257 | if (fh != NULL) | |
ccfa59ea AM |
6258 | { |
6259 | /* They also mark their opd section. */ | |
74f0fb50 | 6260 | eh->elf.root.u.def.section->gc_mark = 1; |
ccfa59ea | 6261 | |
b31867b6 | 6262 | rsec = fh->elf.root.u.def.section; |
ccfa59ea | 6263 | } |
8387904d AM |
6264 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL |
6265 | && opd_entry_value (eh->elf.root.u.def.section, | |
6266 | eh->elf.root.u.def.value, | |
aef36ac1 | 6267 | &rsec, NULL, FALSE) != (bfd_vma) -1) |
74f0fb50 | 6268 | eh->elf.root.u.def.section->gc_mark = 1; |
ccfa59ea | 6269 | else |
1e2f5b6e AM |
6270 | rsec = h->root.u.def.section; |
6271 | break; | |
5bd4f169 AM |
6272 | |
6273 | case bfd_link_hash_common: | |
1e2f5b6e AM |
6274 | rsec = h->root.u.c.p->section; |
6275 | break; | |
5bd4f169 AM |
6276 | |
6277 | default: | |
fb34365b | 6278 | return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); |
5bd4f169 AM |
6279 | } |
6280 | } | |
6281 | } | |
6282 | else | |
6283 | { | |
74f0fb50 | 6284 | struct _opd_sec_data *opd; |
1e2f5b6e AM |
6285 | |
6286 | rsec = bfd_section_from_elf_index (sec->owner, sym->st_shndx); | |
74f0fb50 AM |
6287 | opd = get_opd_info (rsec); |
6288 | if (opd != NULL && opd->func_sec != NULL) | |
ccfa59ea | 6289 | { |
74f0fb50 | 6290 | rsec->gc_mark = 1; |
ccfa59ea | 6291 | |
74f0fb50 | 6292 | rsec = opd->func_sec[(sym->st_value + rel->r_addend) / 8]; |
ccfa59ea | 6293 | } |
5bd4f169 AM |
6294 | } |
6295 | ||
1e2f5b6e | 6296 | return rsec; |
5bd4f169 AM |
6297 | } |
6298 | ||
65f38f15 AM |
6299 | /* Update the .got, .plt. and dynamic reloc reference counts for the |
6300 | section being removed. */ | |
5bd4f169 | 6301 | |
b34976b6 | 6302 | static bfd_boolean |
4ce794b7 AM |
6303 | ppc64_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info, |
6304 | asection *sec, const Elf_Internal_Rela *relocs) | |
5bd4f169 | 6305 | { |
411e1bfb | 6306 | struct ppc_link_hash_table *htab; |
5bd4f169 AM |
6307 | Elf_Internal_Shdr *symtab_hdr; |
6308 | struct elf_link_hash_entry **sym_hashes; | |
411e1bfb | 6309 | struct got_entry **local_got_ents; |
5bd4f169 | 6310 | const Elf_Internal_Rela *rel, *relend; |
5bd4f169 | 6311 | |
7dda2462 TG |
6312 | if (info->relocatable) |
6313 | return TRUE; | |
6314 | ||
680a3378 AM |
6315 | if ((sec->flags & SEC_ALLOC) == 0) |
6316 | return TRUE; | |
6317 | ||
ec338859 AM |
6318 | elf_section_data (sec)->local_dynrel = NULL; |
6319 | ||
411e1bfb | 6320 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
6321 | if (htab == NULL) |
6322 | return FALSE; | |
6323 | ||
0ffa91dd | 6324 | symtab_hdr = &elf_symtab_hdr (abfd); |
5bd4f169 | 6325 | sym_hashes = elf_sym_hashes (abfd); |
411e1bfb | 6326 | local_got_ents = elf_local_got_ents (abfd); |
5bd4f169 AM |
6327 | |
6328 | relend = relocs + sec->reloc_count; | |
6329 | for (rel = relocs; rel < relend; rel++) | |
a33d1f77 AM |
6330 | { |
6331 | unsigned long r_symndx; | |
04c9666a | 6332 | enum elf_ppc64_reloc_type r_type; |
58ac9f71 | 6333 | struct elf_link_hash_entry *h = NULL; |
f961d9dd | 6334 | unsigned char tls_type = 0; |
5bd4f169 | 6335 | |
a33d1f77 | 6336 | r_symndx = ELF64_R_SYM (rel->r_info); |
4ce794b7 | 6337 | r_type = ELF64_R_TYPE (rel->r_info); |
58ac9f71 AM |
6338 | if (r_symndx >= symtab_hdr->sh_info) |
6339 | { | |
6340 | struct ppc_link_hash_entry *eh; | |
6061a67d AM |
6341 | struct elf_dyn_relocs **pp; |
6342 | struct elf_dyn_relocs *p; | |
58ac9f71 AM |
6343 | |
6344 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
b31867b6 | 6345 | h = elf_follow_link (h); |
58ac9f71 AM |
6346 | eh = (struct ppc_link_hash_entry *) h; |
6347 | ||
6348 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next) | |
6349 | if (p->sec == sec) | |
6350 | { | |
6351 | /* Everything must go for SEC. */ | |
6352 | *pp = p->next; | |
6353 | break; | |
6354 | } | |
6355 | } | |
6356 | ||
e054468f AM |
6357 | if (is_branch_reloc (r_type)) |
6358 | { | |
6359 | struct plt_entry **ifunc = NULL; | |
6360 | if (h != NULL) | |
6361 | { | |
6362 | if (h->type == STT_GNU_IFUNC) | |
6363 | ifunc = &h->plt.plist; | |
6364 | } | |
6365 | else if (local_got_ents != NULL) | |
6366 | { | |
6367 | struct plt_entry **local_plt = (struct plt_entry **) | |
6368 | (local_got_ents + symtab_hdr->sh_info); | |
f961d9dd | 6369 | unsigned char *local_got_tls_masks = (unsigned char *) |
e054468f AM |
6370 | (local_plt + symtab_hdr->sh_info); |
6371 | if ((local_got_tls_masks[r_symndx] & PLT_IFUNC) != 0) | |
6372 | ifunc = local_plt + r_symndx; | |
6373 | } | |
6374 | if (ifunc != NULL) | |
6375 | { | |
6376 | struct plt_entry *ent; | |
6377 | ||
6378 | for (ent = *ifunc; ent != NULL; ent = ent->next) | |
6379 | if (ent->addend == rel->r_addend) | |
6380 | break; | |
6381 | if (ent == NULL) | |
6382 | abort (); | |
6383 | if (ent->plt.refcount > 0) | |
6384 | ent->plt.refcount -= 1; | |
6385 | continue; | |
6386 | } | |
6387 | } | |
6388 | ||
a33d1f77 AM |
6389 | switch (r_type) |
6390 | { | |
411e1bfb AM |
6391 | case R_PPC64_GOT_TLSLD16: |
6392 | case R_PPC64_GOT_TLSLD16_LO: | |
6393 | case R_PPC64_GOT_TLSLD16_HI: | |
6394 | case R_PPC64_GOT_TLSLD16_HA: | |
951fd09b | 6395 | tls_type = TLS_TLS | TLS_LD; |
411e1bfb AM |
6396 | goto dogot; |
6397 | ||
6398 | case R_PPC64_GOT_TLSGD16: | |
6399 | case R_PPC64_GOT_TLSGD16_LO: | |
6400 | case R_PPC64_GOT_TLSGD16_HI: | |
6401 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b | 6402 | tls_type = TLS_TLS | TLS_GD; |
411e1bfb AM |
6403 | goto dogot; |
6404 | ||
6405 | case R_PPC64_GOT_TPREL16_DS: | |
6406 | case R_PPC64_GOT_TPREL16_LO_DS: | |
6407 | case R_PPC64_GOT_TPREL16_HI: | |
6408 | case R_PPC64_GOT_TPREL16_HA: | |
6409 | tls_type = TLS_TLS | TLS_TPREL; | |
6410 | goto dogot; | |
6411 | ||
6412 | case R_PPC64_GOT_DTPREL16_DS: | |
6413 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
6414 | case R_PPC64_GOT_DTPREL16_HI: | |
6415 | case R_PPC64_GOT_DTPREL16_HA: | |
6416 | tls_type = TLS_TLS | TLS_DTPREL; | |
6417 | goto dogot; | |
6418 | ||
a33d1f77 AM |
6419 | case R_PPC64_GOT16: |
6420 | case R_PPC64_GOT16_DS: | |
6421 | case R_PPC64_GOT16_HA: | |
6422 | case R_PPC64_GOT16_HI: | |
6423 | case R_PPC64_GOT16_LO: | |
6424 | case R_PPC64_GOT16_LO_DS: | |
411e1bfb AM |
6425 | dogot: |
6426 | { | |
6427 | struct got_entry *ent; | |
6428 | ||
58ac9f71 AM |
6429 | if (h != NULL) |
6430 | ent = h->got.glist; | |
411e1bfb AM |
6431 | else |
6432 | ent = local_got_ents[r_symndx]; | |
6433 | ||
6434 | for (; ent != NULL; ent = ent->next) | |
6435 | if (ent->addend == rel->r_addend | |
e717da7e | 6436 | && ent->owner == abfd |
411e1bfb AM |
6437 | && ent->tls_type == tls_type) |
6438 | break; | |
6439 | if (ent == NULL) | |
6440 | abort (); | |
6441 | if (ent->got.refcount > 0) | |
6442 | ent->got.refcount -= 1; | |
6443 | } | |
a33d1f77 | 6444 | break; |
65f38f15 | 6445 | |
a33d1f77 AM |
6446 | case R_PPC64_PLT16_HA: |
6447 | case R_PPC64_PLT16_HI: | |
6448 | case R_PPC64_PLT16_LO: | |
6449 | case R_PPC64_PLT32: | |
6450 | case R_PPC64_PLT64: | |
721956f4 AM |
6451 | case R_PPC64_REL14: |
6452 | case R_PPC64_REL14_BRNTAKEN: | |
6453 | case R_PPC64_REL14_BRTAKEN: | |
5d1634d7 | 6454 | case R_PPC64_REL24: |
58ac9f71 | 6455 | if (h != NULL) |
5d1634d7 | 6456 | { |
411e1bfb AM |
6457 | struct plt_entry *ent; |
6458 | ||
411e1bfb AM |
6459 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) |
6460 | if (ent->addend == rel->r_addend) | |
6461 | break; | |
7c6c1722 | 6462 | if (ent != NULL && ent->plt.refcount > 0) |
411e1bfb | 6463 | ent->plt.refcount -= 1; |
5d1634d7 | 6464 | } |
e86ce104 | 6465 | break; |
5d1634d7 | 6466 | |
a33d1f77 AM |
6467 | default: |
6468 | break; | |
6469 | } | |
6470 | } | |
b34976b6 | 6471 | return TRUE; |
5bd4f169 AM |
6472 | } |
6473 | ||
deb0e272 AM |
6474 | /* The maximum size of .sfpr. */ |
6475 | #define SFPR_MAX (218*4) | |
6476 | ||
6477 | struct sfpr_def_parms | |
6478 | { | |
699733f6 AM |
6479 | const char name[12]; |
6480 | unsigned char lo, hi; | |
deb0e272 AM |
6481 | bfd_byte * (*write_ent) (bfd *, bfd_byte *, int); |
6482 | bfd_byte * (*write_tail) (bfd *, bfd_byte *, int); | |
6483 | }; | |
6484 | ||
6485 | /* Auto-generate _save*, _rest* functions in .sfpr. */ | |
6486 | ||
4dfe6ac6 | 6487 | static bfd_boolean |
deb0e272 AM |
6488 | sfpr_define (struct bfd_link_info *info, const struct sfpr_def_parms *parm) |
6489 | { | |
6490 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
6491 | unsigned int i; | |
6492 | size_t len = strlen (parm->name); | |
6493 | bfd_boolean writing = FALSE; | |
699733f6 | 6494 | char sym[16]; |
deb0e272 | 6495 | |
4dfe6ac6 NC |
6496 | if (htab == NULL) |
6497 | return FALSE; | |
6498 | ||
deb0e272 AM |
6499 | memcpy (sym, parm->name, len); |
6500 | sym[len + 2] = 0; | |
6501 | ||
6502 | for (i = parm->lo; i <= parm->hi; i++) | |
6503 | { | |
6504 | struct elf_link_hash_entry *h; | |
6505 | ||
6506 | sym[len + 0] = i / 10 + '0'; | |
6507 | sym[len + 1] = i % 10 + '0'; | |
6508 | h = elf_link_hash_lookup (&htab->elf, sym, FALSE, FALSE, TRUE); | |
6509 | if (h != NULL | |
f5385ebf | 6510 | && !h->def_regular) |
deb0e272 AM |
6511 | { |
6512 | h->root.type = bfd_link_hash_defined; | |
6513 | h->root.u.def.section = htab->sfpr; | |
6514 | h->root.u.def.value = htab->sfpr->size; | |
6515 | h->type = STT_FUNC; | |
f5385ebf | 6516 | h->def_regular = 1; |
deb0e272 AM |
6517 | _bfd_elf_link_hash_hide_symbol (info, h, TRUE); |
6518 | writing = TRUE; | |
6519 | if (htab->sfpr->contents == NULL) | |
6520 | { | |
6521 | htab->sfpr->contents = bfd_alloc (htab->elf.dynobj, SFPR_MAX); | |
6522 | if (htab->sfpr->contents == NULL) | |
6523 | return FALSE; | |
6524 | } | |
6525 | } | |
6526 | if (writing) | |
6527 | { | |
6528 | bfd_byte *p = htab->sfpr->contents + htab->sfpr->size; | |
6529 | if (i != parm->hi) | |
6530 | p = (*parm->write_ent) (htab->elf.dynobj, p, i); | |
6531 | else | |
6532 | p = (*parm->write_tail) (htab->elf.dynobj, p, i); | |
6533 | htab->sfpr->size = p - htab->sfpr->contents; | |
6534 | } | |
6535 | } | |
6536 | ||
6537 | return TRUE; | |
6538 | } | |
6539 | ||
6540 | static bfd_byte * | |
6541 | savegpr0 (bfd *abfd, bfd_byte *p, int r) | |
6542 | { | |
6543 | bfd_put_32 (abfd, STD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
6544 | return p + 4; | |
6545 | } | |
6546 | ||
6547 | static bfd_byte * | |
6548 | savegpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
6549 | { | |
6550 | p = savegpr0 (abfd, p, r); | |
a078d95a | 6551 | bfd_put_32 (abfd, STD_R0_0R1 + STK_LR, p); |
deb0e272 AM |
6552 | p = p + 4; |
6553 | bfd_put_32 (abfd, BLR, p); | |
6554 | return p + 4; | |
6555 | } | |
6556 | ||
6557 | static bfd_byte * | |
6558 | restgpr0 (bfd *abfd, bfd_byte *p, int r) | |
6559 | { | |
6560 | bfd_put_32 (abfd, LD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
6561 | return p + 4; | |
6562 | } | |
6563 | ||
6564 | static bfd_byte * | |
6565 | restgpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
6566 | { | |
a078d95a | 6567 | bfd_put_32 (abfd, LD_R0_0R1 + STK_LR, p); |
deb0e272 AM |
6568 | p = p + 4; |
6569 | p = restgpr0 (abfd, p, r); | |
6570 | bfd_put_32 (abfd, MTLR_R0, p); | |
6571 | p = p + 4; | |
6572 | if (r == 29) | |
6573 | { | |
6574 | p = restgpr0 (abfd, p, 30); | |
6575 | p = restgpr0 (abfd, p, 31); | |
6576 | } | |
6577 | bfd_put_32 (abfd, BLR, p); | |
6578 | return p + 4; | |
6579 | } | |
6580 | ||
6581 | static bfd_byte * | |
6582 | savegpr1 (bfd *abfd, bfd_byte *p, int r) | |
6583 | { | |
6584 | bfd_put_32 (abfd, STD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
6585 | return p + 4; | |
6586 | } | |
6587 | ||
6588 | static bfd_byte * | |
6589 | savegpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
6590 | { | |
6591 | p = savegpr1 (abfd, p, r); | |
6592 | bfd_put_32 (abfd, BLR, p); | |
6593 | return p + 4; | |
6594 | } | |
6595 | ||
6596 | static bfd_byte * | |
6597 | restgpr1 (bfd *abfd, bfd_byte *p, int r) | |
6598 | { | |
6599 | bfd_put_32 (abfd, LD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
6600 | return p + 4; | |
6601 | } | |
6602 | ||
6603 | static bfd_byte * | |
6604 | restgpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
6605 | { | |
6606 | p = restgpr1 (abfd, p, r); | |
6607 | bfd_put_32 (abfd, BLR, p); | |
6608 | return p + 4; | |
6609 | } | |
6610 | ||
6611 | static bfd_byte * | |
6612 | savefpr (bfd *abfd, bfd_byte *p, int r) | |
6613 | { | |
6614 | bfd_put_32 (abfd, STFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
6615 | return p + 4; | |
6616 | } | |
6617 | ||
6618 | static bfd_byte * | |
6619 | savefpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
6620 | { | |
6621 | p = savefpr (abfd, p, r); | |
a078d95a | 6622 | bfd_put_32 (abfd, STD_R0_0R1 + STK_LR, p); |
deb0e272 AM |
6623 | p = p + 4; |
6624 | bfd_put_32 (abfd, BLR, p); | |
6625 | return p + 4; | |
6626 | } | |
6627 | ||
6628 | static bfd_byte * | |
6629 | restfpr (bfd *abfd, bfd_byte *p, int r) | |
6630 | { | |
6631 | bfd_put_32 (abfd, LFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
6632 | return p + 4; | |
6633 | } | |
6634 | ||
6635 | static bfd_byte * | |
6636 | restfpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
6637 | { | |
a078d95a | 6638 | bfd_put_32 (abfd, LD_R0_0R1 + STK_LR, p); |
deb0e272 AM |
6639 | p = p + 4; |
6640 | p = restfpr (abfd, p, r); | |
6641 | bfd_put_32 (abfd, MTLR_R0, p); | |
6642 | p = p + 4; | |
6643 | if (r == 29) | |
6644 | { | |
6645 | p = restfpr (abfd, p, 30); | |
6646 | p = restfpr (abfd, p, 31); | |
6647 | } | |
6648 | bfd_put_32 (abfd, BLR, p); | |
6649 | return p + 4; | |
6650 | } | |
6651 | ||
6652 | static bfd_byte * | |
6653 | savefpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
6654 | { | |
6655 | p = savefpr (abfd, p, r); | |
6656 | bfd_put_32 (abfd, BLR, p); | |
6657 | return p + 4; | |
6658 | } | |
6659 | ||
6660 | static bfd_byte * | |
6661 | restfpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
6662 | { | |
6663 | p = restfpr (abfd, p, r); | |
6664 | bfd_put_32 (abfd, BLR, p); | |
6665 | return p + 4; | |
6666 | } | |
6667 | ||
6668 | static bfd_byte * | |
6669 | savevr (bfd *abfd, bfd_byte *p, int r) | |
6670 | { | |
6671 | bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p); | |
6672 | p = p + 4; | |
6673 | bfd_put_32 (abfd, STVX_VR0_R12_R0 + (r << 21), p); | |
6674 | return p + 4; | |
6675 | } | |
6676 | ||
6677 | static bfd_byte * | |
6678 | savevr_tail (bfd *abfd, bfd_byte *p, int r) | |
6679 | { | |
6680 | p = savevr (abfd, p, r); | |
6681 | bfd_put_32 (abfd, BLR, p); | |
6682 | return p + 4; | |
6683 | } | |
6684 | ||
6685 | static bfd_byte * | |
6686 | restvr (bfd *abfd, bfd_byte *p, int r) | |
6687 | { | |
6688 | bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p); | |
6689 | p = p + 4; | |
6690 | bfd_put_32 (abfd, LVX_VR0_R12_R0 + (r << 21), p); | |
6691 | return p + 4; | |
6692 | } | |
6693 | ||
6694 | static bfd_byte * | |
6695 | restvr_tail (bfd *abfd, bfd_byte *p, int r) | |
6696 | { | |
6697 | p = restvr (abfd, p, r); | |
6698 | bfd_put_32 (abfd, BLR, p); | |
6699 | return p + 4; | |
6700 | } | |
6701 | ||
e86ce104 AM |
6702 | /* Called via elf_link_hash_traverse to transfer dynamic linking |
6703 | information on function code symbol entries to their corresponding | |
6704 | function descriptor symbol entries. */ | |
deb0e272 | 6705 | |
b34976b6 | 6706 | static bfd_boolean |
4ce794b7 | 6707 | func_desc_adjust (struct elf_link_hash_entry *h, void *inf) |
5bd4f169 | 6708 | { |
e86ce104 | 6709 | struct bfd_link_info *info; |
65f38f15 | 6710 | struct ppc_link_hash_table *htab; |
411e1bfb | 6711 | struct plt_entry *ent; |
50bc7936 AM |
6712 | struct ppc_link_hash_entry *fh; |
6713 | struct ppc_link_hash_entry *fdh; | |
6714 | bfd_boolean force_local; | |
5bd4f169 | 6715 | |
50bc7936 AM |
6716 | fh = (struct ppc_link_hash_entry *) h; |
6717 | if (fh->elf.root.type == bfd_link_hash_indirect) | |
b34976b6 | 6718 | return TRUE; |
e86ce104 | 6719 | |
4ce794b7 | 6720 | info = inf; |
65f38f15 | 6721 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
6722 | if (htab == NULL) |
6723 | return FALSE; | |
5bd4f169 | 6724 | |
c09bdfe5 AM |
6725 | /* Resolve undefined references to dot-symbols as the value |
6726 | in the function descriptor, if we have one in a regular object. | |
6727 | This is to satisfy cases like ".quad .foo". Calls to functions | |
6728 | in dynamic objects are handled elsewhere. */ | |
6729 | if (fh->elf.root.type == bfd_link_hash_undefweak | |
6730 | && fh->was_undefined | |
b31867b6 AM |
6731 | && (fdh = defined_func_desc (fh)) != NULL |
6732 | && get_opd_info (fdh->elf.root.u.def.section) != NULL | |
6733 | && opd_entry_value (fdh->elf.root.u.def.section, | |
6734 | fdh->elf.root.u.def.value, | |
c09bdfe5 | 6735 | &fh->elf.root.u.def.section, |
aef36ac1 | 6736 | &fh->elf.root.u.def.value, FALSE) != (bfd_vma) -1) |
c09bdfe5 | 6737 | { |
b31867b6 | 6738 | fh->elf.root.type = fdh->elf.root.type; |
f5385ebf | 6739 | fh->elf.forced_local = 1; |
b31867b6 AM |
6740 | fh->elf.def_regular = fdh->elf.def_regular; |
6741 | fh->elf.def_dynamic = fdh->elf.def_dynamic; | |
c09bdfe5 AM |
6742 | } |
6743 | ||
e86ce104 AM |
6744 | /* If this is a function code symbol, transfer dynamic linking |
6745 | information to the function descriptor symbol. */ | |
50bc7936 | 6746 | if (!fh->is_func) |
b34976b6 | 6747 | return TRUE; |
e86ce104 | 6748 | |
50bc7936 | 6749 | for (ent = fh->elf.plt.plist; ent != NULL; ent = ent->next) |
411e1bfb AM |
6750 | if (ent->plt.refcount > 0) |
6751 | break; | |
50bc7936 AM |
6752 | if (ent == NULL |
6753 | || fh->elf.root.root.string[0] != '.' | |
6754 | || fh->elf.root.root.string[1] == '\0') | |
6755 | return TRUE; | |
5bd4f169 | 6756 | |
50bc7936 AM |
6757 | /* Find the corresponding function descriptor symbol. Create it |
6758 | as undefined if necessary. */ | |
5bd4f169 | 6759 | |
b31867b6 | 6760 | fdh = lookup_fdh (fh, htab); |
50bc7936 | 6761 | if (fdh == NULL |
df131623 | 6762 | && !info->executable |
50bc7936 AM |
6763 | && (fh->elf.root.type == bfd_link_hash_undefined |
6764 | || fh->elf.root.type == bfd_link_hash_undefweak)) | |
6765 | { | |
908b32fc | 6766 | fdh = make_fdh (info, fh); |
bb700d78 AM |
6767 | if (fdh == NULL) |
6768 | return FALSE; | |
50bc7936 | 6769 | } |
648cca2c | 6770 | |
908b32fc | 6771 | /* Fake function descriptors are made undefweak. If the function |
433817dd AM |
6772 | code symbol is strong undefined, make the fake sym the same. |
6773 | If the function code symbol is defined, then force the fake | |
6774 | descriptor local; We can't support overriding of symbols in a | |
6775 | shared library on a fake descriptor. */ | |
908b32fc AM |
6776 | |
6777 | if (fdh != NULL | |
6778 | && fdh->fake | |
433817dd | 6779 | && fdh->elf.root.type == bfd_link_hash_undefweak) |
908b32fc | 6780 | { |
433817dd AM |
6781 | if (fh->elf.root.type == bfd_link_hash_undefined) |
6782 | { | |
6783 | fdh->elf.root.type = bfd_link_hash_undefined; | |
6784 | bfd_link_add_undef (&htab->elf.root, &fdh->elf.root); | |
6785 | } | |
6786 | else if (fh->elf.root.type == bfd_link_hash_defined | |
6787 | || fh->elf.root.type == bfd_link_hash_defweak) | |
6788 | { | |
6789 | _bfd_elf_link_hash_hide_symbol (info, &fdh->elf, TRUE); | |
6790 | } | |
908b32fc AM |
6791 | } |
6792 | ||
50bc7936 | 6793 | if (fdh != NULL |
f5385ebf | 6794 | && !fdh->elf.forced_local |
df131623 | 6795 | && (!info->executable |
f5385ebf AM |
6796 | || fdh->elf.def_dynamic |
6797 | || fdh->elf.ref_dynamic | |
50bc7936 AM |
6798 | || (fdh->elf.root.type == bfd_link_hash_undefweak |
6799 | && ELF_ST_VISIBILITY (fdh->elf.other) == STV_DEFAULT))) | |
6800 | { | |
6801 | if (fdh->elf.dynindx == -1) | |
c152c796 | 6802 | if (! bfd_elf_link_record_dynamic_symbol (info, &fdh->elf)) |
50bc7936 | 6803 | return FALSE; |
f5385ebf AM |
6804 | fdh->elf.ref_regular |= fh->elf.ref_regular; |
6805 | fdh->elf.ref_dynamic |= fh->elf.ref_dynamic; | |
6806 | fdh->elf.ref_regular_nonweak |= fh->elf.ref_regular_nonweak; | |
6807 | fdh->elf.non_got_ref |= fh->elf.non_got_ref; | |
50bc7936 | 6808 | if (ELF_ST_VISIBILITY (fh->elf.other) == STV_DEFAULT) |
e86ce104 | 6809 | { |
40d16e0b | 6810 | move_plt_plist (fh, fdh); |
f5385ebf | 6811 | fdh->elf.needs_plt = 1; |
e86ce104 | 6812 | } |
50bc7936 | 6813 | fdh->is_func_descriptor = 1; |
34814b9f AM |
6814 | fdh->oh = fh; |
6815 | fh->oh = fdh; | |
e86ce104 AM |
6816 | } |
6817 | ||
50bc7936 AM |
6818 | /* Now that the info is on the function descriptor, clear the |
6819 | function code sym info. Any function code syms for which we | |
6820 | don't have a definition in a regular file, we force local. | |
6821 | This prevents a shared library from exporting syms that have | |
6822 | been imported from another library. Function code syms that | |
6823 | are really in the library we must leave global to prevent the | |
6824 | linker dragging in a definition from a static library. */ | |
93f3fa99 AM |
6825 | force_local = (!fh->elf.def_regular |
6826 | || fdh == NULL | |
6827 | || !fdh->elf.def_regular | |
6828 | || fdh->elf.forced_local); | |
50bc7936 AM |
6829 | _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local); |
6830 | ||
b34976b6 | 6831 | return TRUE; |
e86ce104 | 6832 | } |
40b8271b | 6833 | |
e86ce104 | 6834 | /* Called near the start of bfd_elf_size_dynamic_sections. We use |
82bd7b59 AM |
6835 | this hook to a) provide some gcc support functions, and b) transfer |
6836 | dynamic linking information gathered so far on function code symbol | |
6837 | entries, to their corresponding function descriptor symbol entries. */ | |
deb0e272 | 6838 | |
b34976b6 | 6839 | static bfd_boolean |
4ce794b7 AM |
6840 | ppc64_elf_func_desc_adjust (bfd *obfd ATTRIBUTE_UNUSED, |
6841 | struct bfd_link_info *info) | |
e86ce104 AM |
6842 | { |
6843 | struct ppc_link_hash_table *htab; | |
82bd7b59 | 6844 | unsigned int i; |
27fc25a1 | 6845 | static const struct sfpr_def_parms funcs[] = |
deb0e272 AM |
6846 | { |
6847 | { "_savegpr0_", 14, 31, savegpr0, savegpr0_tail }, | |
6848 | { "_restgpr0_", 14, 29, restgpr0, restgpr0_tail }, | |
6849 | { "_restgpr0_", 30, 31, restgpr0, restgpr0_tail }, | |
6850 | { "_savegpr1_", 14, 31, savegpr1, savegpr1_tail }, | |
6851 | { "_restgpr1_", 14, 31, restgpr1, restgpr1_tail }, | |
6852 | { "_savefpr_", 14, 31, savefpr, savefpr0_tail }, | |
6853 | { "_restfpr_", 14, 29, restfpr, restfpr0_tail }, | |
6854 | { "_restfpr_", 30, 31, restfpr, restfpr0_tail }, | |
6855 | { "._savef", 14, 31, savefpr, savefpr1_tail }, | |
6856 | { "._restf", 14, 31, restfpr, restfpr1_tail }, | |
6857 | { "_savevr_", 20, 31, savevr, savevr_tail }, | |
6858 | { "_restvr_", 20, 31, restvr, restvr_tail } | |
6859 | }; | |
e86ce104 AM |
6860 | |
6861 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
6862 | if (htab == NULL) |
6863 | return FALSE; | |
6864 | ||
5295321c AM |
6865 | if (!info->relocatable |
6866 | && htab->elf.hgot != NULL) | |
dba6fa9b AM |
6867 | { |
6868 | _bfd_elf_link_hash_hide_symbol (info, htab->elf.hgot, TRUE); | |
6869 | /* Make .TOC. defined so as to prevent it being made dynamic. | |
6870 | The wrong value here is fixed later in ppc64_elf_set_toc. */ | |
6871 | htab->elf.hgot->type = STT_OBJECT; | |
6872 | htab->elf.hgot->root.type = bfd_link_hash_defined; | |
6873 | htab->elf.hgot->root.u.def.value = 0; | |
6874 | htab->elf.hgot->root.u.def.section = bfd_abs_section_ptr; | |
6875 | htab->elf.hgot->def_regular = 1; | |
6876 | htab->elf.hgot->other = ((htab->elf.hgot->other & ~ELF_ST_VISIBILITY (-1)) | |
6877 | | STV_HIDDEN); | |
6878 | } | |
c66bb0ee | 6879 | |
82bd7b59 AM |
6880 | if (htab->sfpr == NULL) |
6881 | /* We don't have any relocs. */ | |
b34976b6 | 6882 | return TRUE; |
82bd7b59 | 6883 | |
deb0e272 AM |
6884 | /* Provide any missing _save* and _rest* functions. */ |
6885 | htab->sfpr->size = 0; | |
7d4c687d | 6886 | if (htab->params->save_restore_funcs) |
27fc25a1 AM |
6887 | for (i = 0; i < sizeof (funcs) / sizeof (funcs[0]); i++) |
6888 | if (!sfpr_define (info, &funcs[i])) | |
6889 | return FALSE; | |
82bd7b59 | 6890 | |
4ce794b7 | 6891 | elf_link_hash_traverse (&htab->elf, func_desc_adjust, info); |
805fc799 | 6892 | |
eea6121a | 6893 | if (htab->sfpr->size == 0) |
8423293d | 6894 | htab->sfpr->flags |= SEC_EXCLUDE; |
82bd7b59 | 6895 | |
b34976b6 | 6896 | return TRUE; |
e86ce104 AM |
6897 | } |
6898 | ||
a345bc8d AM |
6899 | /* Return true if we have dynamic relocs that apply to read-only sections. */ |
6900 | ||
6901 | static bfd_boolean | |
6902 | readonly_dynrelocs (struct elf_link_hash_entry *h) | |
6903 | { | |
6904 | struct ppc_link_hash_entry *eh; | |
6905 | struct elf_dyn_relocs *p; | |
6906 | ||
6907 | eh = (struct ppc_link_hash_entry *) h; | |
6908 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
6909 | { | |
6910 | asection *s = p->sec->output_section; | |
6911 | ||
6912 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
6913 | return TRUE; | |
6914 | } | |
6915 | return FALSE; | |
6916 | } | |
6917 | ||
e86ce104 AM |
6918 | /* Adjust a symbol defined by a dynamic object and referenced by a |
6919 | regular object. The current definition is in some section of the | |
6920 | dynamic object, but we're not including those sections. We have to | |
6921 | change the definition to something the rest of the link can | |
6922 | understand. */ | |
6923 | ||
b34976b6 | 6924 | static bfd_boolean |
4ce794b7 AM |
6925 | ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info *info, |
6926 | struct elf_link_hash_entry *h) | |
e86ce104 AM |
6927 | { |
6928 | struct ppc_link_hash_table *htab; | |
e86ce104 | 6929 | asection *s; |
e86ce104 AM |
6930 | |
6931 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
6932 | if (htab == NULL) |
6933 | return FALSE; | |
e86ce104 AM |
6934 | |
6935 | /* Deal with function syms. */ | |
6936 | if (h->type == STT_FUNC | |
e054468f | 6937 | || h->type == STT_GNU_IFUNC |
f5385ebf | 6938 | || h->needs_plt) |
e86ce104 AM |
6939 | { |
6940 | /* Clear procedure linkage table information for any symbol that | |
6941 | won't need a .plt entry. */ | |
411e1bfb AM |
6942 | struct plt_entry *ent; |
6943 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) | |
6944 | if (ent->plt.refcount > 0) | |
6945 | break; | |
8387904d | 6946 | if (ent == NULL |
e054468f AM |
6947 | || (h->type != STT_GNU_IFUNC |
6948 | && (SYMBOL_CALLS_LOCAL (info, h) | |
6949 | || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
6950 | && h->root.type == bfd_link_hash_undefweak)))) | |
40b8271b | 6951 | { |
411e1bfb | 6952 | h->plt.plist = NULL; |
f5385ebf | 6953 | h->needs_plt = 0; |
40b8271b | 6954 | } |
a345bc8d AM |
6955 | else if (abiversion (info->output_bfd) == 2) |
6956 | { | |
6957 | /* After adjust_dynamic_symbol, non_got_ref set in the | |
6958 | non-shared case means that we have allocated space in | |
6959 | .dynbss for the symbol and thus dyn_relocs for this | |
6960 | symbol should be discarded. | |
6961 | If we get here we know we are making a PLT entry for this | |
6962 | symbol, and in an executable we'd normally resolve | |
6963 | relocations against this symbol to the PLT entry. Allow | |
6964 | dynamic relocs if the reference is weak, and the dynamic | |
6965 | relocs will not cause text relocation. */ | |
6966 | if (!h->ref_regular_nonweak | |
6967 | && h->non_got_ref | |
6968 | && h->type != STT_GNU_IFUNC | |
6969 | && !readonly_dynrelocs (h)) | |
6970 | h->non_got_ref = 0; | |
6971 | ||
6972 | /* If making a plt entry, then we don't need copy relocs. */ | |
6973 | return TRUE; | |
6974 | } | |
5bd4f169 | 6975 | } |
bbd7ec4a | 6976 | else |
411e1bfb | 6977 | h->plt.plist = NULL; |
5bd4f169 AM |
6978 | |
6979 | /* If this is a weak symbol, and there is a real definition, the | |
6980 | processor independent code will have arranged for us to see the | |
6981 | real definition first, and we can just use the same value. */ | |
f6e332e6 | 6982 | if (h->u.weakdef != NULL) |
5bd4f169 | 6983 | { |
f6e332e6 AM |
6984 | BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined |
6985 | || h->u.weakdef->root.type == bfd_link_hash_defweak); | |
6986 | h->root.u.def.section = h->u.weakdef->root.u.def.section; | |
6987 | h->root.u.def.value = h->u.weakdef->root.u.def.value; | |
a23b6845 | 6988 | if (ELIMINATE_COPY_RELOCS) |
f6e332e6 | 6989 | h->non_got_ref = h->u.weakdef->non_got_ref; |
b34976b6 | 6990 | return TRUE; |
5bd4f169 AM |
6991 | } |
6992 | ||
5bd4f169 AM |
6993 | /* If we are creating a shared library, we must presume that the |
6994 | only references to the symbol are via the global offset table. | |
6995 | For such cases we need not do anything here; the relocations will | |
6996 | be handled correctly by relocate_section. */ | |
6997 | if (info->shared) | |
b34976b6 | 6998 | return TRUE; |
5bd4f169 | 6999 | |
65f38f15 AM |
7000 | /* If there are no references to this symbol that do not use the |
7001 | GOT, we don't need to generate a copy reloc. */ | |
f5385ebf | 7002 | if (!h->non_got_ref) |
b34976b6 | 7003 | return TRUE; |
65f38f15 | 7004 | |
b186458a JJ |
7005 | /* Don't generate a copy reloc for symbols defined in the executable. */ |
7006 | if (!h->def_dynamic || !h->ref_regular || h->def_regular) | |
7007 | return TRUE; | |
7008 | ||
a345bc8d AM |
7009 | /* If we didn't find any dynamic relocs in read-only sections, then |
7010 | we'll be keeping the dynamic relocs and avoiding the copy reloc. */ | |
7011 | if (ELIMINATE_COPY_RELOCS && !readonly_dynrelocs (h)) | |
65f38f15 | 7012 | { |
a345bc8d AM |
7013 | h->non_got_ref = 0; |
7014 | return TRUE; | |
65f38f15 AM |
7015 | } |
7016 | ||
5d35169e | 7017 | if (h->plt.plist != NULL) |
97b639ba AM |
7018 | { |
7019 | /* We should never get here, but unfortunately there are versions | |
7020 | of gcc out there that improperly (for this ABI) put initialized | |
7021 | function pointers, vtable refs and suchlike in read-only | |
7022 | sections. Allow them to proceed, but warn that this might | |
7023 | break at runtime. */ | |
25f53a85 | 7024 | info->callbacks->einfo |
bc30df16 | 7025 | (_("%P: copy reloc against `%T' requires lazy plt linking; " |
25f53a85 | 7026 | "avoid setting LD_BIND_NOW=1 or upgrade gcc\n"), |
97b639ba AM |
7027 | h->root.root.string); |
7028 | } | |
5d35169e AM |
7029 | |
7030 | /* This is a reference to a symbol defined by a dynamic object which | |
7031 | is not a function. */ | |
7032 | ||
5bd4f169 AM |
7033 | /* We must allocate the symbol in our .dynbss section, which will |
7034 | become part of the .bss section of the executable. There will be | |
7035 | an entry for this symbol in the .dynsym section. The dynamic | |
7036 | object will contain position independent code, so all references | |
7037 | from the dynamic object to this symbol will go through the global | |
7038 | offset table. The dynamic linker will use the .dynsym entry to | |
7039 | determine the address it must put in the global offset table, so | |
7040 | both the dynamic object and the regular object will refer to the | |
7041 | same memory location for the variable. */ | |
5bd4f169 | 7042 | |
04c9666a AM |
7043 | /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker |
7044 | to copy the initial value out of the dynamic object and into the | |
5bd4f169 AM |
7045 | runtime process image. We need to remember the offset into the |
7046 | .rela.bss section we are going to use. */ | |
1d7e9d18 | 7047 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0) |
5bd4f169 | 7048 | { |
eea6121a | 7049 | htab->relbss->size += sizeof (Elf64_External_Rela); |
f5385ebf | 7050 | h->needs_copy = 1; |
5bd4f169 AM |
7051 | } |
7052 | ||
4ce794b7 | 7053 | s = htab->dynbss; |
5bd4f169 | 7054 | |
027297b7 | 7055 | return _bfd_elf_adjust_dynamic_copy (h, s); |
5bd4f169 AM |
7056 | } |
7057 | ||
e86ce104 AM |
7058 | /* If given a function descriptor symbol, hide both the function code |
7059 | sym and the descriptor. */ | |
7060 | static void | |
4ce794b7 AM |
7061 | ppc64_elf_hide_symbol (struct bfd_link_info *info, |
7062 | struct elf_link_hash_entry *h, | |
7063 | bfd_boolean force_local) | |
e86ce104 | 7064 | { |
34814b9f | 7065 | struct ppc_link_hash_entry *eh; |
e86ce104 AM |
7066 | _bfd_elf_link_hash_hide_symbol (info, h, force_local); |
7067 | ||
34814b9f AM |
7068 | eh = (struct ppc_link_hash_entry *) h; |
7069 | if (eh->is_func_descriptor) | |
e86ce104 | 7070 | { |
34814b9f | 7071 | struct ppc_link_hash_entry *fh = eh->oh; |
e86ce104 | 7072 | |
721956f4 | 7073 | if (fh == NULL) |
d1329ca3 AM |
7074 | { |
7075 | const char *p, *q; | |
7076 | struct ppc_link_hash_table *htab; | |
7077 | char save; | |
7078 | ||
7079 | /* We aren't supposed to use alloca in BFD because on | |
7080 | systems which do not have alloca the version in libiberty | |
7081 | calls xmalloc, which might cause the program to crash | |
7082 | when it runs out of memory. This function doesn't have a | |
7083 | return status, so there's no way to gracefully return an | |
7084 | error. So cheat. We know that string[-1] can be safely | |
34814b9f AM |
7085 | accessed; It's either a string in an ELF string table, |
7086 | or allocated in an objalloc structure. */ | |
d1329ca3 | 7087 | |
34814b9f | 7088 | p = eh->elf.root.root.string - 1; |
d1329ca3 AM |
7089 | save = *p; |
7090 | *(char *) p = '.'; | |
7091 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
7092 | if (htab == NULL) |
7093 | return; | |
7094 | ||
34814b9f AM |
7095 | fh = (struct ppc_link_hash_entry *) |
7096 | elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE); | |
d1329ca3 AM |
7097 | *(char *) p = save; |
7098 | ||
7099 | /* Unfortunately, if it so happens that the string we were | |
7100 | looking for was allocated immediately before this string, | |
7101 | then we overwrote the string terminator. That's the only | |
7102 | reason the lookup should fail. */ | |
7103 | if (fh == NULL) | |
7104 | { | |
34814b9f AM |
7105 | q = eh->elf.root.root.string + strlen (eh->elf.root.root.string); |
7106 | while (q >= eh->elf.root.root.string && *q == *p) | |
d1329ca3 | 7107 | --q, --p; |
34814b9f AM |
7108 | if (q < eh->elf.root.root.string && *p == '.') |
7109 | fh = (struct ppc_link_hash_entry *) | |
7110 | elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE); | |
d1329ca3 AM |
7111 | } |
7112 | if (fh != NULL) | |
7113 | { | |
34814b9f AM |
7114 | eh->oh = fh; |
7115 | fh->oh = eh; | |
d1329ca3 AM |
7116 | } |
7117 | } | |
e86ce104 | 7118 | if (fh != NULL) |
34814b9f | 7119 | _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local); |
e86ce104 AM |
7120 | } |
7121 | } | |
7122 | ||
411e1bfb | 7123 | static bfd_boolean |
8843416a AM |
7124 | get_sym_h (struct elf_link_hash_entry **hp, |
7125 | Elf_Internal_Sym **symp, | |
7126 | asection **symsecp, | |
f961d9dd | 7127 | unsigned char **tls_maskp, |
8843416a AM |
7128 | Elf_Internal_Sym **locsymsp, |
7129 | unsigned long r_symndx, | |
7130 | bfd *ibfd) | |
411e1bfb | 7131 | { |
0ffa91dd | 7132 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd); |
411e1bfb AM |
7133 | |
7134 | if (r_symndx >= symtab_hdr->sh_info) | |
7135 | { | |
7136 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd); | |
7137 | struct elf_link_hash_entry *h; | |
7138 | ||
7139 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
b31867b6 | 7140 | h = elf_follow_link (h); |
411e1bfb AM |
7141 | |
7142 | if (hp != NULL) | |
7143 | *hp = h; | |
7144 | ||
7145 | if (symp != NULL) | |
7146 | *symp = NULL; | |
7147 | ||
7148 | if (symsecp != NULL) | |
7149 | { | |
7150 | asection *symsec = NULL; | |
7151 | if (h->root.type == bfd_link_hash_defined | |
7152 | || h->root.type == bfd_link_hash_defweak) | |
7153 | symsec = h->root.u.def.section; | |
7154 | *symsecp = symsec; | |
7155 | } | |
7156 | ||
e7b938ca | 7157 | if (tls_maskp != NULL) |
411e1bfb AM |
7158 | { |
7159 | struct ppc_link_hash_entry *eh; | |
7160 | ||
7161 | eh = (struct ppc_link_hash_entry *) h; | |
e7b938ca | 7162 | *tls_maskp = &eh->tls_mask; |
411e1bfb AM |
7163 | } |
7164 | } | |
7165 | else | |
7166 | { | |
7167 | Elf_Internal_Sym *sym; | |
7168 | Elf_Internal_Sym *locsyms = *locsymsp; | |
7169 | ||
7170 | if (locsyms == NULL) | |
7171 | { | |
7172 | locsyms = (Elf_Internal_Sym *) symtab_hdr->contents; | |
7173 | if (locsyms == NULL) | |
7174 | locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr, | |
7175 | symtab_hdr->sh_info, | |
7176 | 0, NULL, NULL, NULL); | |
7177 | if (locsyms == NULL) | |
7178 | return FALSE; | |
7179 | *locsymsp = locsyms; | |
7180 | } | |
7181 | sym = locsyms + r_symndx; | |
7182 | ||
7183 | if (hp != NULL) | |
7184 | *hp = NULL; | |
7185 | ||
7186 | if (symp != NULL) | |
7187 | *symp = sym; | |
7188 | ||
7189 | if (symsecp != NULL) | |
cb33740c | 7190 | *symsecp = bfd_section_from_elf_index (ibfd, sym->st_shndx); |
411e1bfb | 7191 | |
e7b938ca | 7192 | if (tls_maskp != NULL) |
411e1bfb AM |
7193 | { |
7194 | struct got_entry **lgot_ents; | |
f961d9dd | 7195 | unsigned char *tls_mask; |
411e1bfb | 7196 | |
e7b938ca | 7197 | tls_mask = NULL; |
411e1bfb AM |
7198 | lgot_ents = elf_local_got_ents (ibfd); |
7199 | if (lgot_ents != NULL) | |
7200 | { | |
e054468f AM |
7201 | struct plt_entry **local_plt = (struct plt_entry **) |
7202 | (lgot_ents + symtab_hdr->sh_info); | |
f961d9dd | 7203 | unsigned char *lgot_masks = (unsigned char *) |
e054468f | 7204 | (local_plt + symtab_hdr->sh_info); |
e7b938ca | 7205 | tls_mask = &lgot_masks[r_symndx]; |
411e1bfb | 7206 | } |
e7b938ca | 7207 | *tls_maskp = tls_mask; |
411e1bfb AM |
7208 | } |
7209 | } | |
7210 | return TRUE; | |
7211 | } | |
7212 | ||
e7b938ca | 7213 | /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on |
951fd09b | 7214 | error, 2 on a toc GD type suitable for optimization, 3 on a toc LD |
ad8e1ba5 | 7215 | type suitable for optimization, and 1 otherwise. */ |
951fd09b AM |
7216 | |
7217 | static int | |
f961d9dd | 7218 | get_tls_mask (unsigned char **tls_maskp, |
3a71aa26 AM |
7219 | unsigned long *toc_symndx, |
7220 | bfd_vma *toc_addend, | |
0d4792f7 | 7221 | Elf_Internal_Sym **locsymsp, |
3a71aa26 AM |
7222 | const Elf_Internal_Rela *rel, |
7223 | bfd *ibfd) | |
411e1bfb AM |
7224 | { |
7225 | unsigned long r_symndx; | |
0d4792f7 | 7226 | int next_r; |
411e1bfb AM |
7227 | struct elf_link_hash_entry *h; |
7228 | Elf_Internal_Sym *sym; | |
7229 | asection *sec; | |
7230 | bfd_vma off; | |
7231 | ||
7232 | r_symndx = ELF64_R_SYM (rel->r_info); | |
e7b938ca | 7233 | if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd)) |
951fd09b | 7234 | return 0; |
411e1bfb | 7235 | |
e7b938ca | 7236 | if ((*tls_maskp != NULL && **tls_maskp != 0) |
411e1bfb | 7237 | || sec == NULL |
6bee8834 | 7238 | || ppc64_elf_section_data (sec) == NULL |
7c8fe5c4 | 7239 | || ppc64_elf_section_data (sec)->sec_type != sec_toc) |
951fd09b | 7240 | return 1; |
411e1bfb AM |
7241 | |
7242 | /* Look inside a TOC section too. */ | |
7243 | if (h != NULL) | |
7244 | { | |
7245 | BFD_ASSERT (h->root.type == bfd_link_hash_defined); | |
7246 | off = h->root.u.def.value; | |
7247 | } | |
7248 | else | |
7249 | off = sym->st_value; | |
7250 | off += rel->r_addend; | |
7251 | BFD_ASSERT (off % 8 == 0); | |
3a71aa26 AM |
7252 | r_symndx = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8]; |
7253 | next_r = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8 + 1]; | |
0d4792f7 AM |
7254 | if (toc_symndx != NULL) |
7255 | *toc_symndx = r_symndx; | |
3a71aa26 AM |
7256 | if (toc_addend != NULL) |
7257 | *toc_addend = ppc64_elf_section_data (sec)->u.toc.add[off / 8]; | |
7258 | if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd)) | |
7259 | return 0; | |
854b41e7 | 7260 | if ((h == NULL || is_static_defined (h)) |
0d4792f7 AM |
7261 | && (next_r == -1 || next_r == -2)) |
7262 | return 1 - next_r; | |
951fd09b | 7263 | return 1; |
411e1bfb AM |
7264 | } |
7265 | ||
3b421ab3 AM |
7266 | /* Find (or create) an entry in the tocsave hash table. */ |
7267 | ||
7268 | static struct tocsave_entry * | |
7269 | tocsave_find (struct ppc_link_hash_table *htab, | |
7270 | enum insert_option insert, | |
7271 | Elf_Internal_Sym **local_syms, | |
7272 | const Elf_Internal_Rela *irela, | |
7273 | bfd *ibfd) | |
7274 | { | |
7275 | unsigned long r_indx; | |
7276 | struct elf_link_hash_entry *h; | |
7277 | Elf_Internal_Sym *sym; | |
7278 | struct tocsave_entry ent, *p; | |
7279 | hashval_t hash; | |
7280 | struct tocsave_entry **slot; | |
7281 | ||
7282 | r_indx = ELF64_R_SYM (irela->r_info); | |
7283 | if (!get_sym_h (&h, &sym, &ent.sec, NULL, local_syms, r_indx, ibfd)) | |
7284 | return NULL; | |
7285 | if (ent.sec == NULL || ent.sec->output_section == NULL) | |
7286 | { | |
7287 | (*_bfd_error_handler) | |
7288 | (_("%B: undefined symbol on R_PPC64_TOCSAVE relocation")); | |
7289 | return NULL; | |
7290 | } | |
7291 | ||
7292 | if (h != NULL) | |
7293 | ent.offset = h->root.u.def.value; | |
7294 | else | |
7295 | ent.offset = sym->st_value; | |
7296 | ent.offset += irela->r_addend; | |
7297 | ||
7298 | hash = tocsave_htab_hash (&ent); | |
7299 | slot = ((struct tocsave_entry **) | |
7300 | htab_find_slot_with_hash (htab->tocsave_htab, &ent, hash, insert)); | |
7301 | if (slot == NULL) | |
7302 | return NULL; | |
7303 | ||
7304 | if (*slot == NULL) | |
7305 | { | |
7306 | p = (struct tocsave_entry *) bfd_alloc (ibfd, sizeof (*p)); | |
7307 | if (p == NULL) | |
7308 | return NULL; | |
7309 | *p = ent; | |
7310 | *slot = p; | |
7311 | } | |
7312 | return *slot; | |
7313 | } | |
7314 | ||
754021d0 | 7315 | /* Adjust all global syms defined in opd sections. In gcc generated |
8387904d | 7316 | code for the old ABI, these will already have been done. */ |
754021d0 AM |
7317 | |
7318 | static bfd_boolean | |
7319 | adjust_opd_syms (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED) | |
7320 | { | |
7321 | struct ppc_link_hash_entry *eh; | |
7322 | asection *sym_sec; | |
74f0fb50 | 7323 | struct _opd_sec_data *opd; |
754021d0 AM |
7324 | |
7325 | if (h->root.type == bfd_link_hash_indirect) | |
7326 | return TRUE; | |
7327 | ||
754021d0 AM |
7328 | if (h->root.type != bfd_link_hash_defined |
7329 | && h->root.type != bfd_link_hash_defweak) | |
7330 | return TRUE; | |
7331 | ||
7332 | eh = (struct ppc_link_hash_entry *) h; | |
7333 | if (eh->adjust_done) | |
7334 | return TRUE; | |
7335 | ||
7336 | sym_sec = eh->elf.root.u.def.section; | |
74f0fb50 AM |
7337 | opd = get_opd_info (sym_sec); |
7338 | if (opd != NULL && opd->adjust != NULL) | |
754021d0 | 7339 | { |
74f0fb50 | 7340 | long adjust = opd->adjust[eh->elf.root.u.def.value / 8]; |
4025353c AM |
7341 | if (adjust == -1) |
7342 | { | |
7343 | /* This entry has been deleted. */ | |
b3fac117 | 7344 | asection *dsec = ppc64_elf_tdata (sym_sec->owner)->deleted_section; |
81688140 AM |
7345 | if (dsec == NULL) |
7346 | { | |
7347 | for (dsec = sym_sec->owner->sections; dsec; dsec = dsec->next) | |
dbaa2011 | 7348 | if (discarded_section (dsec)) |
81688140 | 7349 | { |
b3fac117 | 7350 | ppc64_elf_tdata (sym_sec->owner)->deleted_section = dsec; |
81688140 AM |
7351 | break; |
7352 | } | |
7353 | } | |
4025353c | 7354 | eh->elf.root.u.def.value = 0; |
81688140 | 7355 | eh->elf.root.u.def.section = dsec; |
4025353c AM |
7356 | } |
7357 | else | |
7358 | eh->elf.root.u.def.value += adjust; | |
754021d0 AM |
7359 | eh->adjust_done = 1; |
7360 | } | |
7361 | return TRUE; | |
7362 | } | |
7363 | ||
8c1d1bb8 | 7364 | /* Handles decrementing dynamic reloc counts for the reloc specified by |
19e08130 | 7365 | R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM |
8c1d1bb8 AM |
7366 | have already been determined. */ |
7367 | ||
7368 | static bfd_boolean | |
7369 | dec_dynrel_count (bfd_vma r_info, | |
7370 | asection *sec, | |
7371 | struct bfd_link_info *info, | |
7372 | Elf_Internal_Sym **local_syms, | |
7373 | struct elf_link_hash_entry *h, | |
19e08130 | 7374 | Elf_Internal_Sym *sym) |
8c1d1bb8 AM |
7375 | { |
7376 | enum elf_ppc64_reloc_type r_type; | |
19e08130 | 7377 | asection *sym_sec = NULL; |
8c1d1bb8 AM |
7378 | |
7379 | /* Can this reloc be dynamic? This switch, and later tests here | |
7380 | should be kept in sync with the code in check_relocs. */ | |
7381 | r_type = ELF64_R_TYPE (r_info); | |
7382 | switch (r_type) | |
7383 | { | |
7384 | default: | |
7385 | return TRUE; | |
7386 | ||
7387 | case R_PPC64_TPREL16: | |
7388 | case R_PPC64_TPREL16_LO: | |
7389 | case R_PPC64_TPREL16_HI: | |
7390 | case R_PPC64_TPREL16_HA: | |
7391 | case R_PPC64_TPREL16_DS: | |
7392 | case R_PPC64_TPREL16_LO_DS: | |
f9c6b907 AM |
7393 | case R_PPC64_TPREL16_HIGH: |
7394 | case R_PPC64_TPREL16_HIGHA: | |
8c1d1bb8 AM |
7395 | case R_PPC64_TPREL16_HIGHER: |
7396 | case R_PPC64_TPREL16_HIGHERA: | |
7397 | case R_PPC64_TPREL16_HIGHEST: | |
7398 | case R_PPC64_TPREL16_HIGHESTA: | |
7399 | if (!info->shared) | |
7400 | return TRUE; | |
7401 | ||
7402 | case R_PPC64_TPREL64: | |
7403 | case R_PPC64_DTPMOD64: | |
7404 | case R_PPC64_DTPREL64: | |
7405 | case R_PPC64_ADDR64: | |
7406 | case R_PPC64_REL30: | |
7407 | case R_PPC64_REL32: | |
7408 | case R_PPC64_REL64: | |
7409 | case R_PPC64_ADDR14: | |
7410 | case R_PPC64_ADDR14_BRNTAKEN: | |
7411 | case R_PPC64_ADDR14_BRTAKEN: | |
7412 | case R_PPC64_ADDR16: | |
7413 | case R_PPC64_ADDR16_DS: | |
7414 | case R_PPC64_ADDR16_HA: | |
7415 | case R_PPC64_ADDR16_HI: | |
f9c6b907 AM |
7416 | case R_PPC64_ADDR16_HIGH: |
7417 | case R_PPC64_ADDR16_HIGHA: | |
8c1d1bb8 AM |
7418 | case R_PPC64_ADDR16_HIGHER: |
7419 | case R_PPC64_ADDR16_HIGHERA: | |
7420 | case R_PPC64_ADDR16_HIGHEST: | |
7421 | case R_PPC64_ADDR16_HIGHESTA: | |
7422 | case R_PPC64_ADDR16_LO: | |
7423 | case R_PPC64_ADDR16_LO_DS: | |
7424 | case R_PPC64_ADDR24: | |
7425 | case R_PPC64_ADDR32: | |
7426 | case R_PPC64_UADDR16: | |
7427 | case R_PPC64_UADDR32: | |
7428 | case R_PPC64_UADDR64: | |
7429 | case R_PPC64_TOC: | |
7430 | break; | |
7431 | } | |
7432 | ||
7433 | if (local_syms != NULL) | |
7434 | { | |
7435 | unsigned long r_symndx; | |
8c1d1bb8 AM |
7436 | bfd *ibfd = sec->owner; |
7437 | ||
7438 | r_symndx = ELF64_R_SYM (r_info); | |
7439 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, local_syms, r_symndx, ibfd)) | |
7440 | return FALSE; | |
7441 | } | |
7442 | ||
7443 | if ((info->shared | |
1d483afe | 7444 | && (must_be_dyn_reloc (info, r_type) |
8c1d1bb8 | 7445 | || (h != NULL |
198f1157 | 7446 | && (!SYMBOLIC_BIND (info, h) |
8c1d1bb8 AM |
7447 | || h->root.type == bfd_link_hash_defweak |
7448 | || !h->def_regular)))) | |
7449 | || (ELIMINATE_COPY_RELOCS | |
7450 | && !info->shared | |
7451 | && h != NULL | |
7452 | && (h->root.type == bfd_link_hash_defweak | |
7453 | || !h->def_regular))) | |
7454 | ; | |
7455 | else | |
7456 | return TRUE; | |
7457 | ||
7458 | if (h != NULL) | |
6edfbbad | 7459 | { |
19e08130 AM |
7460 | struct elf_dyn_relocs *p; |
7461 | struct elf_dyn_relocs **pp; | |
7462 | pp = &((struct ppc_link_hash_entry *) h)->dyn_relocs; | |
7463 | ||
7464 | /* elf_gc_sweep may have already removed all dyn relocs associated | |
7465 | with local syms for a given section. Also, symbol flags are | |
7466 | changed by elf_gc_sweep_symbol, confusing the test above. Don't | |
7467 | report a dynreloc miscount. */ | |
7468 | if (*pp == NULL && info->gc_sections) | |
7469 | return TRUE; | |
7470 | ||
7471 | while ((p = *pp) != NULL) | |
60124e18 | 7472 | { |
19e08130 AM |
7473 | if (p->sec == sec) |
7474 | { | |
7475 | if (!must_be_dyn_reloc (info, r_type)) | |
7476 | p->pc_count -= 1; | |
7477 | p->count -= 1; | |
7478 | if (p->count == 0) | |
7479 | *pp = p->next; | |
7480 | return TRUE; | |
7481 | } | |
7482 | pp = &p->next; | |
60124e18 | 7483 | } |
6edfbbad | 7484 | } |
19e08130 AM |
7485 | else |
7486 | { | |
7487 | struct ppc_dyn_relocs *p; | |
7488 | struct ppc_dyn_relocs **pp; | |
7489 | void *vpp; | |
7490 | bfd_boolean is_ifunc; | |
8c1d1bb8 | 7491 | |
19e08130 AM |
7492 | if (local_syms == NULL) |
7493 | sym_sec = bfd_section_from_elf_index (sec->owner, sym->st_shndx); | |
7494 | if (sym_sec == NULL) | |
7495 | sym_sec = sec; | |
c57da1a7 | 7496 | |
19e08130 AM |
7497 | vpp = &elf_section_data (sym_sec)->local_dynrel; |
7498 | pp = (struct ppc_dyn_relocs **) vpp; | |
7499 | ||
7500 | if (*pp == NULL && info->gc_sections) | |
7501 | return TRUE; | |
7502 | ||
7503 | is_ifunc = ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC; | |
7504 | while ((p = *pp) != NULL) | |
8c1d1bb8 | 7505 | { |
19e08130 AM |
7506 | if (p->sec == sec && p->ifunc == is_ifunc) |
7507 | { | |
7508 | p->count -= 1; | |
7509 | if (p->count == 0) | |
7510 | *pp = p->next; | |
7511 | return TRUE; | |
7512 | } | |
7513 | pp = &p->next; | |
8c1d1bb8 | 7514 | } |
8c1d1bb8 AM |
7515 | } |
7516 | ||
8de848d8 | 7517 | info->callbacks->einfo (_("%P: dynreloc miscount for %B, section %A\n"), |
25f53a85 | 7518 | sec->owner, sec); |
8c1d1bb8 AM |
7519 | bfd_set_error (bfd_error_bad_value); |
7520 | return FALSE; | |
7521 | } | |
7522 | ||
754021d0 AM |
7523 | /* Remove unused Official Procedure Descriptor entries. Currently we |
7524 | only remove those associated with functions in discarded link-once | |
7525 | sections, or weakly defined functions that have been overridden. It | |
7526 | would be possible to remove many more entries for statically linked | |
7527 | applications. */ | |
7528 | ||
b34976b6 | 7529 | bfd_boolean |
e7d1c40c | 7530 | ppc64_elf_edit_opd (struct bfd_link_info *info) |
1e2f5b6e AM |
7531 | { |
7532 | bfd *ibfd; | |
754021d0 | 7533 | bfd_boolean some_edited = FALSE; |
3f764659 | 7534 | asection *need_pad = NULL; |
e7d1c40c AM |
7535 | struct ppc_link_hash_table *htab; |
7536 | ||
7537 | htab = ppc_hash_table (info); | |
7538 | if (htab == NULL) | |
7539 | return FALSE; | |
1e2f5b6e | 7540 | |
411e1bfb | 7541 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) |
1e2f5b6e AM |
7542 | { |
7543 | asection *sec; | |
7544 | Elf_Internal_Rela *relstart, *rel, *relend; | |
7545 | Elf_Internal_Shdr *symtab_hdr; | |
6cdc0ccc | 7546 | Elf_Internal_Sym *local_syms; |
1e2f5b6e | 7547 | bfd_vma offset; |
74f0fb50 | 7548 | struct _opd_sec_data *opd; |
3f764659 JJ |
7549 | bfd_boolean need_edit, add_aux_fields; |
7550 | bfd_size_type cnt_16b = 0; | |
1e2f5b6e | 7551 | |
854b41e7 AM |
7552 | if (!is_ppc64_elf (ibfd)) |
7553 | continue; | |
7554 | ||
1e2f5b6e | 7555 | sec = bfd_get_section_by_name (ibfd, ".opd"); |
46de2a7c | 7556 | if (sec == NULL || sec->size == 0) |
1e2f5b6e AM |
7557 | continue; |
7558 | ||
dbaa2011 | 7559 | if (sec->sec_info_type == SEC_INFO_TYPE_JUST_SYMS) |
4b85d634 AM |
7560 | continue; |
7561 | ||
1e2f5b6e AM |
7562 | if (sec->output_section == bfd_abs_section_ptr) |
7563 | continue; | |
7564 | ||
7565 | /* Look through the section relocs. */ | |
7566 | if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0) | |
7567 | continue; | |
7568 | ||
6cdc0ccc | 7569 | local_syms = NULL; |
0ffa91dd | 7570 | symtab_hdr = &elf_symtab_hdr (ibfd); |
1e2f5b6e AM |
7571 | |
7572 | /* Read the relocations. */ | |
4ce794b7 | 7573 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, |
45d6a902 | 7574 | info->keep_memory); |
1e2f5b6e | 7575 | if (relstart == NULL) |
b34976b6 | 7576 | return FALSE; |
1e2f5b6e AM |
7577 | |
7578 | /* First run through the relocs to check they are sane, and to | |
7579 | determine whether we need to edit this opd section. */ | |
b34976b6 | 7580 | need_edit = FALSE; |
3f764659 | 7581 | need_pad = sec; |
1e2f5b6e AM |
7582 | offset = 0; |
7583 | relend = relstart + sec->reloc_count; | |
50bc7936 | 7584 | for (rel = relstart; rel < relend; ) |
1e2f5b6e | 7585 | { |
04c9666a | 7586 | enum elf_ppc64_reloc_type r_type; |
1e2f5b6e AM |
7587 | unsigned long r_symndx; |
7588 | asection *sym_sec; | |
7589 | struct elf_link_hash_entry *h; | |
7590 | Elf_Internal_Sym *sym; | |
7591 | ||
3f764659 | 7592 | /* .opd contains a regular array of 16 or 24 byte entries. We're |
1e2f5b6e AM |
7593 | only interested in the reloc pointing to a function entry |
7594 | point. */ | |
50bc7936 AM |
7595 | if (rel->r_offset != offset |
7596 | || rel + 1 >= relend | |
7597 | || (rel + 1)->r_offset != offset + 8) | |
1e2f5b6e AM |
7598 | { |
7599 | /* If someone messes with .opd alignment then after a | |
7600 | "ld -r" we might have padding in the middle of .opd. | |
7601 | Also, there's nothing to prevent someone putting | |
7602 | something silly in .opd with the assembler. No .opd | |
b34976b6 | 7603 | optimization for them! */ |
3f764659 | 7604 | broken_opd: |
1e2f5b6e | 7605 | (*_bfd_error_handler) |
d003868e | 7606 | (_("%B: .opd is not a regular array of opd entries"), ibfd); |
b34976b6 | 7607 | need_edit = FALSE; |
1e2f5b6e AM |
7608 | break; |
7609 | } | |
7610 | ||
50bc7936 AM |
7611 | if ((r_type = ELF64_R_TYPE (rel->r_info)) != R_PPC64_ADDR64 |
7612 | || (r_type = ELF64_R_TYPE ((rel + 1)->r_info)) != R_PPC64_TOC) | |
7613 | { | |
7614 | (*_bfd_error_handler) | |
d003868e AM |
7615 | (_("%B: unexpected reloc type %u in .opd section"), |
7616 | ibfd, r_type); | |
50bc7936 AM |
7617 | need_edit = FALSE; |
7618 | break; | |
7619 | } | |
7620 | ||
1e2f5b6e | 7621 | r_symndx = ELF64_R_SYM (rel->r_info); |
411e1bfb AM |
7622 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, |
7623 | r_symndx, ibfd)) | |
50bc7936 | 7624 | goto error_ret; |
1e2f5b6e AM |
7625 | |
7626 | if (sym_sec == NULL || sym_sec->owner == NULL) | |
7627 | { | |
411e1bfb AM |
7628 | const char *sym_name; |
7629 | if (h != NULL) | |
7630 | sym_name = h->root.root.string; | |
7631 | else | |
26c61ae5 L |
7632 | sym_name = bfd_elf_sym_name (ibfd, symtab_hdr, sym, |
7633 | sym_sec); | |
411e1bfb | 7634 | |
1e2f5b6e | 7635 | (*_bfd_error_handler) |
d003868e AM |
7636 | (_("%B: undefined sym `%s' in .opd section"), |
7637 | ibfd, sym_name); | |
b34976b6 | 7638 | need_edit = FALSE; |
1e2f5b6e AM |
7639 | break; |
7640 | } | |
7641 | ||
51020317 AM |
7642 | /* opd entries are always for functions defined in the |
7643 | current input bfd. If the symbol isn't defined in the | |
7644 | input bfd, then we won't be using the function in this | |
7645 | bfd; It must be defined in a linkonce section in another | |
7646 | bfd, or is weak. It's also possible that we are | |
7647 | discarding the function due to a linker script /DISCARD/, | |
7648 | which we test for via the output_section. */ | |
7649 | if (sym_sec->owner != ibfd | |
7650 | || sym_sec->output_section == bfd_abs_section_ptr) | |
b34976b6 | 7651 | need_edit = TRUE; |
1e2f5b6e | 7652 | |
50bc7936 | 7653 | rel += 2; |
3f764659 JJ |
7654 | if (rel == relend |
7655 | || (rel + 1 == relend && rel->r_offset == offset + 16)) | |
7656 | { | |
7657 | if (sec->size == offset + 24) | |
7658 | { | |
7659 | need_pad = NULL; | |
7660 | break; | |
7661 | } | |
7662 | if (rel == relend && sec->size == offset + 16) | |
7663 | { | |
7664 | cnt_16b++; | |
7665 | break; | |
7666 | } | |
7667 | goto broken_opd; | |
7668 | } | |
7669 | ||
7670 | if (rel->r_offset == offset + 24) | |
7671 | offset += 24; | |
7672 | else if (rel->r_offset != offset + 16) | |
7673 | goto broken_opd; | |
7674 | else if (rel + 1 < relend | |
7675 | && ELF64_R_TYPE (rel[0].r_info) == R_PPC64_ADDR64 | |
7676 | && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOC) | |
7677 | { | |
7678 | offset += 16; | |
7679 | cnt_16b++; | |
7680 | } | |
7681 | else if (rel + 2 < relend | |
7682 | && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_ADDR64 | |
7683 | && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_TOC) | |
7684 | { | |
7685 | offset += 24; | |
7686 | rel += 1; | |
7687 | } | |
7688 | else | |
7689 | goto broken_opd; | |
1e2f5b6e AM |
7690 | } |
7691 | ||
e7d1c40c | 7692 | add_aux_fields = htab->params->non_overlapping_opd && cnt_16b > 0; |
3f764659 JJ |
7693 | |
7694 | if (need_edit || add_aux_fields) | |
1e2f5b6e AM |
7695 | { |
7696 | Elf_Internal_Rela *write_rel; | |
d4730f92 | 7697 | Elf_Internal_Shdr *rel_hdr; |
1e2f5b6e | 7698 | bfd_byte *rptr, *wptr; |
983bddc8 | 7699 | bfd_byte *new_contents; |
b34976b6 | 7700 | bfd_boolean skip; |
3f764659 | 7701 | long opd_ent_size; |
74f0fb50 AM |
7702 | bfd_size_type amt; |
7703 | ||
983bddc8 | 7704 | new_contents = NULL; |
74f0fb50 AM |
7705 | amt = sec->size * sizeof (long) / 8; |
7706 | opd = &ppc64_elf_section_data (sec)->u.opd; | |
33c0ec9d | 7707 | opd->adjust = bfd_zalloc (sec->owner, amt); |
74f0fb50 AM |
7708 | if (opd->adjust == NULL) |
7709 | return FALSE; | |
7710 | ppc64_elf_section_data (sec)->sec_type = sec_opd; | |
1e2f5b6e AM |
7711 | |
7712 | /* This seems a waste of time as input .opd sections are all | |
7713 | zeros as generated by gcc, but I suppose there's no reason | |
7714 | this will always be so. We might start putting something in | |
7715 | the third word of .opd entries. */ | |
7716 | if ((sec->flags & SEC_IN_MEMORY) == 0) | |
7717 | { | |
eea6121a AM |
7718 | bfd_byte *loc; |
7719 | if (!bfd_malloc_and_get_section (ibfd, sec, &loc)) | |
6cdc0ccc | 7720 | { |
eea6121a AM |
7721 | if (loc != NULL) |
7722 | free (loc); | |
50bc7936 | 7723 | error_ret: |
6cdc0ccc AM |
7724 | if (local_syms != NULL |
7725 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
7726 | free (local_syms); | |
6cdc0ccc AM |
7727 | if (elf_section_data (sec)->relocs != relstart) |
7728 | free (relstart); | |
b34976b6 | 7729 | return FALSE; |
6cdc0ccc | 7730 | } |
1e2f5b6e AM |
7731 | sec->contents = loc; |
7732 | sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS); | |
7733 | } | |
7734 | ||
7735 | elf_section_data (sec)->relocs = relstart; | |
7736 | ||
3f764659 | 7737 | new_contents = sec->contents; |
3f764659 JJ |
7738 | if (add_aux_fields) |
7739 | { | |
7740 | new_contents = bfd_malloc (sec->size + cnt_16b * 8); | |
7741 | if (new_contents == NULL) | |
7742 | return FALSE; | |
7743 | need_pad = FALSE; | |
3f764659 | 7744 | } |
b4f4e59f AM |
7745 | wptr = new_contents; |
7746 | rptr = sec->contents; | |
3f764659 | 7747 | |
1e2f5b6e | 7748 | write_rel = relstart; |
b34976b6 | 7749 | skip = FALSE; |
1e2f5b6e | 7750 | offset = 0; |
3f764659 | 7751 | opd_ent_size = 0; |
1e2f5b6e AM |
7752 | for (rel = relstart; rel < relend; rel++) |
7753 | { | |
50bc7936 AM |
7754 | unsigned long r_symndx; |
7755 | asection *sym_sec; | |
7756 | struct elf_link_hash_entry *h; | |
7757 | Elf_Internal_Sym *sym; | |
7758 | ||
7759 | r_symndx = ELF64_R_SYM (rel->r_info); | |
7760 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
d37c89e5 | 7761 | r_symndx, ibfd)) |
50bc7936 AM |
7762 | goto error_ret; |
7763 | ||
1e2f5b6e AM |
7764 | if (rel->r_offset == offset) |
7765 | { | |
50bc7936 | 7766 | struct ppc_link_hash_entry *fdh = NULL; |
3f764659 JJ |
7767 | |
7768 | /* See if the .opd entry is full 24 byte or | |
7769 | 16 byte (with fd_aux entry overlapped with next | |
7770 | fd_func). */ | |
7771 | opd_ent_size = 24; | |
7772 | if ((rel + 2 == relend && sec->size == offset + 16) | |
7773 | || (rel + 3 < relend | |
7774 | && rel[2].r_offset == offset + 16 | |
7775 | && rel[3].r_offset == offset + 24 | |
7776 | && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_ADDR64 | |
7777 | && ELF64_R_TYPE (rel[3].r_info) == R_PPC64_TOC)) | |
7778 | opd_ent_size = 16; | |
7779 | ||
4025353c AM |
7780 | if (h != NULL |
7781 | && h->root.root.string[0] == '.') | |
c4f68ce3 | 7782 | { |
e7d1c40c | 7783 | fdh = lookup_fdh ((struct ppc_link_hash_entry *) h, htab); |
c4f68ce3 AM |
7784 | if (fdh != NULL |
7785 | && fdh->elf.root.type != bfd_link_hash_defined | |
7786 | && fdh->elf.root.type != bfd_link_hash_defweak) | |
7787 | fdh = NULL; | |
7788 | } | |
1e2f5b6e | 7789 | |
51020317 AM |
7790 | skip = (sym_sec->owner != ibfd |
7791 | || sym_sec->output_section == bfd_abs_section_ptr); | |
a4aa0fb7 AM |
7792 | if (skip) |
7793 | { | |
4025353c | 7794 | if (fdh != NULL && sym_sec->owner == ibfd) |
a4aa0fb7 AM |
7795 | { |
7796 | /* Arrange for the function descriptor sym | |
7797 | to be dropped. */ | |
d6fe2dc1 AM |
7798 | fdh->elf.root.u.def.value = 0; |
7799 | fdh->elf.root.u.def.section = sym_sec; | |
a4aa0fb7 | 7800 | } |
74f0fb50 | 7801 | opd->adjust[rel->r_offset / 8] = -1; |
a4aa0fb7 AM |
7802 | } |
7803 | else | |
1e2f5b6e AM |
7804 | { |
7805 | /* We'll be keeping this opd entry. */ | |
7806 | ||
4025353c | 7807 | if (fdh != NULL) |
1e2f5b6e | 7808 | { |
754021d0 AM |
7809 | /* Redefine the function descriptor symbol to |
7810 | this location in the opd section. It is | |
7811 | necessary to update the value here rather | |
7812 | than using an array of adjustments as we do | |
7813 | for local symbols, because various places | |
7814 | in the generic ELF code use the value | |
7815 | stored in u.def.value. */ | |
3f764659 | 7816 | fdh->elf.root.u.def.value = wptr - new_contents; |
754021d0 | 7817 | fdh->adjust_done = 1; |
1e2f5b6e | 7818 | } |
754021d0 AM |
7819 | |
7820 | /* Local syms are a bit tricky. We could | |
7821 | tweak them as they can be cached, but | |
7822 | we'd need to look through the local syms | |
7823 | for the function descriptor sym which we | |
7824 | don't have at the moment. So keep an | |
7825 | array of adjustments. */ | |
74f0fb50 | 7826 | opd->adjust[rel->r_offset / 8] |
3f764659 | 7827 | = (wptr - new_contents) - (rptr - sec->contents); |
1e2f5b6e AM |
7828 | |
7829 | if (wptr != rptr) | |
3f764659 JJ |
7830 | memcpy (wptr, rptr, opd_ent_size); |
7831 | wptr += opd_ent_size; | |
7832 | if (add_aux_fields && opd_ent_size == 16) | |
7833 | { | |
7834 | memset (wptr, '\0', 8); | |
7835 | wptr += 8; | |
7836 | } | |
1e2f5b6e | 7837 | } |
3f764659 JJ |
7838 | rptr += opd_ent_size; |
7839 | offset += opd_ent_size; | |
1e2f5b6e AM |
7840 | } |
7841 | ||
50bc7936 AM |
7842 | if (skip) |
7843 | { | |
60124e18 AM |
7844 | if (!NO_OPD_RELOCS |
7845 | && !info->relocatable | |
18d944df | 7846 | && !dec_dynrel_count (rel->r_info, sec, info, |
19e08130 | 7847 | NULL, h, sym)) |
8c1d1bb8 | 7848 | goto error_ret; |
50bc7936 AM |
7849 | } |
7850 | else | |
1e2f5b6e | 7851 | { |
50bc7936 AM |
7852 | /* We need to adjust any reloc offsets to point to the |
7853 | new opd entries. While we're at it, we may as well | |
7854 | remove redundant relocs. */ | |
74f0fb50 | 7855 | rel->r_offset += opd->adjust[(offset - opd_ent_size) / 8]; |
1e2f5b6e AM |
7856 | if (write_rel != rel) |
7857 | memcpy (write_rel, rel, sizeof (*rel)); | |
7858 | ++write_rel; | |
7859 | } | |
7860 | } | |
7861 | ||
3f764659 | 7862 | sec->size = wptr - new_contents; |
1e2f5b6e | 7863 | sec->reloc_count = write_rel - relstart; |
3f764659 JJ |
7864 | if (add_aux_fields) |
7865 | { | |
7866 | free (sec->contents); | |
7867 | sec->contents = new_contents; | |
7868 | } | |
7869 | ||
05bf9422 | 7870 | /* Fudge the header size too, as this is used later in |
cdcf6e38 | 7871 | elf_bfd_final_link if we are emitting relocs. */ |
d4730f92 BS |
7872 | rel_hdr = _bfd_elf_single_rel_hdr (sec); |
7873 | rel_hdr->sh_size = sec->reloc_count * rel_hdr->sh_entsize; | |
754021d0 | 7874 | some_edited = TRUE; |
1e2f5b6e | 7875 | } |
6cdc0ccc | 7876 | else if (elf_section_data (sec)->relocs != relstart) |
1e2f5b6e | 7877 | free (relstart); |
6cdc0ccc | 7878 | |
411e1bfb AM |
7879 | if (local_syms != NULL |
7880 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
7881 | { | |
7882 | if (!info->keep_memory) | |
7883 | free (local_syms); | |
7884 | else | |
7885 | symtab_hdr->contents = (unsigned char *) local_syms; | |
7886 | } | |
7887 | } | |
7888 | ||
754021d0 AM |
7889 | if (some_edited) |
7890 | elf_link_hash_traverse (elf_hash_table (info), adjust_opd_syms, NULL); | |
7891 | ||
3f764659 JJ |
7892 | /* If we are doing a final link and the last .opd entry is just 16 byte |
7893 | long, add a 8 byte padding after it. */ | |
7894 | if (need_pad != NULL && !info->relocatable) | |
7895 | { | |
7896 | bfd_byte *p; | |
7897 | ||
7898 | if ((need_pad->flags & SEC_IN_MEMORY) == 0) | |
7899 | { | |
7900 | BFD_ASSERT (need_pad->size > 0); | |
7901 | ||
7902 | p = bfd_malloc (need_pad->size + 8); | |
7903 | if (p == NULL) | |
7904 | return FALSE; | |
699733f6 | 7905 | |
3f764659 JJ |
7906 | if (! bfd_get_section_contents (need_pad->owner, need_pad, |
7907 | p, 0, need_pad->size)) | |
7908 | return FALSE; | |
7909 | ||
7910 | need_pad->contents = p; | |
7911 | need_pad->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS); | |
7912 | } | |
7913 | else | |
7914 | { | |
7915 | p = bfd_realloc (need_pad->contents, need_pad->size + 8); | |
7916 | if (p == NULL) | |
7917 | return FALSE; | |
7918 | ||
7919 | need_pad->contents = p; | |
7920 | } | |
7921 | ||
7922 | memset (need_pad->contents + need_pad->size, 0, 8); | |
7923 | need_pad->size += 8; | |
7924 | } | |
7925 | ||
411e1bfb AM |
7926 | return TRUE; |
7927 | } | |
7928 | ||
e1918d23 | 7929 | /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */ |
411e1bfb | 7930 | |
e1918d23 | 7931 | asection * |
e7d1c40c | 7932 | ppc64_elf_tls_setup (struct bfd_link_info *info) |
411e1bfb | 7933 | { |
411e1bfb AM |
7934 | struct ppc_link_hash_table *htab; |
7935 | ||
411e1bfb | 7936 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
7937 | if (htab == NULL) |
7938 | return NULL; | |
7939 | ||
ee67d69a AM |
7940 | if (abiversion (info->output_bfd) == 1) |
7941 | htab->opd_abi = 1; | |
7942 | ||
e7d1c40c | 7943 | if (htab->params->no_multi_toc) |
33c0ec9d AM |
7944 | htab->do_multi_toc = 0; |
7945 | else if (!htab->do_multi_toc) | |
e7d1c40c | 7946 | htab->params->no_multi_toc = 1; |
33c0ec9d | 7947 | |
3a71aa26 AM |
7948 | htab->tls_get_addr = ((struct ppc_link_hash_entry *) |
7949 | elf_link_hash_lookup (&htab->elf, ".__tls_get_addr", | |
7950 | FALSE, FALSE, TRUE)); | |
a7f2871e AM |
7951 | /* Move dynamic linking info to the function descriptor sym. */ |
7952 | if (htab->tls_get_addr != NULL) | |
7953 | func_desc_adjust (&htab->tls_get_addr->elf, info); | |
3a71aa26 AM |
7954 | htab->tls_get_addr_fd = ((struct ppc_link_hash_entry *) |
7955 | elf_link_hash_lookup (&htab->elf, "__tls_get_addr", | |
7956 | FALSE, FALSE, TRUE)); | |
e7d1c40c | 7957 | if (!htab->params->no_tls_get_addr_opt) |
a7f2871e AM |
7958 | { |
7959 | struct elf_link_hash_entry *opt, *opt_fd, *tga, *tga_fd; | |
7960 | ||
7961 | opt = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr_opt", | |
7962 | FALSE, FALSE, TRUE); | |
7963 | if (opt != NULL) | |
7964 | func_desc_adjust (opt, info); | |
7965 | opt_fd = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt", | |
7966 | FALSE, FALSE, TRUE); | |
7967 | if (opt_fd != NULL | |
7968 | && (opt_fd->root.type == bfd_link_hash_defined | |
7969 | || opt_fd->root.type == bfd_link_hash_defweak)) | |
7970 | { | |
7971 | /* If glibc supports an optimized __tls_get_addr call stub, | |
7972 | signalled by the presence of __tls_get_addr_opt, and we'll | |
7973 | be calling __tls_get_addr via a plt call stub, then | |
7974 | make __tls_get_addr point to __tls_get_addr_opt. */ | |
7975 | tga_fd = &htab->tls_get_addr_fd->elf; | |
7976 | if (htab->elf.dynamic_sections_created | |
7977 | && tga_fd != NULL | |
7978 | && (tga_fd->type == STT_FUNC | |
7979 | || tga_fd->needs_plt) | |
7980 | && !(SYMBOL_CALLS_LOCAL (info, tga_fd) | |
7981 | || (ELF_ST_VISIBILITY (tga_fd->other) != STV_DEFAULT | |
7982 | && tga_fd->root.type == bfd_link_hash_undefweak))) | |
7983 | { | |
7984 | struct plt_entry *ent; | |
7985 | ||
7986 | for (ent = tga_fd->plt.plist; ent != NULL; ent = ent->next) | |
7987 | if (ent->plt.refcount > 0) | |
7988 | break; | |
7989 | if (ent != NULL) | |
7990 | { | |
7991 | tga_fd->root.type = bfd_link_hash_indirect; | |
7992 | tga_fd->root.u.i.link = &opt_fd->root; | |
7993 | ppc64_elf_copy_indirect_symbol (info, opt_fd, tga_fd); | |
7994 | if (opt_fd->dynindx != -1) | |
7995 | { | |
7996 | /* Use __tls_get_addr_opt in dynamic relocations. */ | |
7997 | opt_fd->dynindx = -1; | |
7998 | _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr, | |
7999 | opt_fd->dynstr_index); | |
8000 | if (!bfd_elf_link_record_dynamic_symbol (info, opt_fd)) | |
854b41e7 | 8001 | return NULL; |
a7f2871e AM |
8002 | } |
8003 | htab->tls_get_addr_fd = (struct ppc_link_hash_entry *) opt_fd; | |
8004 | tga = &htab->tls_get_addr->elf; | |
8005 | if (opt != NULL && tga != NULL) | |
8006 | { | |
8007 | tga->root.type = bfd_link_hash_indirect; | |
8008 | tga->root.u.i.link = &opt->root; | |
8009 | ppc64_elf_copy_indirect_symbol (info, opt, tga); | |
8010 | _bfd_elf_link_hash_hide_symbol (info, opt, | |
8011 | tga->forced_local); | |
8012 | htab->tls_get_addr = (struct ppc_link_hash_entry *) opt; | |
8013 | } | |
8014 | htab->tls_get_addr_fd->oh = htab->tls_get_addr; | |
8015 | htab->tls_get_addr_fd->is_func_descriptor = 1; | |
8016 | if (htab->tls_get_addr != NULL) | |
8017 | { | |
8018 | htab->tls_get_addr->oh = htab->tls_get_addr_fd; | |
8019 | htab->tls_get_addr->is_func = 1; | |
8020 | } | |
8021 | } | |
8022 | } | |
8023 | } | |
8024 | else | |
e7d1c40c | 8025 | htab->params->no_tls_get_addr_opt = TRUE; |
a7f2871e | 8026 | } |
33c0ec9d | 8027 | return _bfd_elf_tls_setup (info->output_bfd, info); |
3a71aa26 | 8028 | } |
8387904d | 8029 | |
3a71aa26 AM |
8030 | /* Return TRUE iff REL is a branch reloc with a global symbol matching |
8031 | HASH1 or HASH2. */ | |
8387904d | 8032 | |
3a71aa26 AM |
8033 | static bfd_boolean |
8034 | branch_reloc_hash_match (const bfd *ibfd, | |
8035 | const Elf_Internal_Rela *rel, | |
8036 | const struct ppc_link_hash_entry *hash1, | |
8037 | const struct ppc_link_hash_entry *hash2) | |
8038 | { | |
8039 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd); | |
8040 | enum elf_ppc64_reloc_type r_type = ELF64_R_TYPE (rel->r_info); | |
8041 | unsigned int r_symndx = ELF64_R_SYM (rel->r_info); | |
8042 | ||
e054468f | 8043 | if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type)) |
8387904d | 8044 | { |
3a71aa26 AM |
8045 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd); |
8046 | struct elf_link_hash_entry *h; | |
8387904d | 8047 | |
3a71aa26 | 8048 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; |
b31867b6 | 8049 | h = elf_follow_link (h); |
3a71aa26 AM |
8050 | if (h == &hash1->elf || h == &hash2->elf) |
8051 | return TRUE; | |
a48ebf4d | 8052 | } |
3a71aa26 | 8053 | return FALSE; |
951fd09b | 8054 | } |
411e1bfb | 8055 | |
951fd09b AM |
8056 | /* Run through all the TLS relocs looking for optimization |
8057 | opportunities. The linker has been hacked (see ppc64elf.em) to do | |
8058 | a preliminary section layout so that we know the TLS segment | |
8059 | offsets. We can't optimize earlier because some optimizations need | |
8060 | to know the tp offset, and we need to optimize before allocating | |
8061 | dynamic relocations. */ | |
8062 | ||
8063 | bfd_boolean | |
33c0ec9d | 8064 | ppc64_elf_tls_optimize (struct bfd_link_info *info) |
951fd09b AM |
8065 | { |
8066 | bfd *ibfd; | |
8067 | asection *sec; | |
8068 | struct ppc_link_hash_table *htab; | |
663a1470 | 8069 | unsigned char *toc_ref; |
102890f0 | 8070 | int pass; |
951fd09b | 8071 | |
1d483afe | 8072 | if (info->relocatable || !info->executable) |
411e1bfb AM |
8073 | return TRUE; |
8074 | ||
951fd09b | 8075 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
8076 | if (htab == NULL) |
8077 | return FALSE; | |
8078 | ||
663a1470 AM |
8079 | /* Make two passes over the relocs. On the first pass, mark toc |
8080 | entries involved with tls relocs, and check that tls relocs | |
8081 | involved in setting up a tls_get_addr call are indeed followed by | |
8082 | such a call. If they are not, we can't do any tls optimization. | |
8083 | On the second pass twiddle tls_mask flags to notify | |
8084 | relocate_section that optimization can be done, and adjust got | |
8085 | and plt refcounts. */ | |
8086 | toc_ref = NULL; | |
8087 | for (pass = 0; pass < 2; ++pass) | |
8088 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
8089 | { | |
8090 | Elf_Internal_Sym *locsyms = NULL; | |
8091 | asection *toc = bfd_get_section_by_name (ibfd, ".toc"); | |
8092 | ||
102890f0 AM |
8093 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) |
8094 | if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section)) | |
8095 | { | |
8096 | Elf_Internal_Rela *relstart, *rel, *relend; | |
663a1470 | 8097 | bfd_boolean found_tls_get_addr_arg = 0; |
411e1bfb | 8098 | |
102890f0 AM |
8099 | /* Read the relocations. */ |
8100 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, | |
8101 | info->keep_memory); | |
8102 | if (relstart == NULL) | |
2915c55b JK |
8103 | { |
8104 | free (toc_ref); | |
8105 | return FALSE; | |
8106 | } | |
411e1bfb | 8107 | |
102890f0 AM |
8108 | relend = relstart + sec->reloc_count; |
8109 | for (rel = relstart; rel < relend; rel++) | |
8110 | { | |
8111 | enum elf_ppc64_reloc_type r_type; | |
8112 | unsigned long r_symndx; | |
8113 | struct elf_link_hash_entry *h; | |
8114 | Elf_Internal_Sym *sym; | |
8115 | asection *sym_sec; | |
f961d9dd AM |
8116 | unsigned char *tls_mask; |
8117 | unsigned char tls_set, tls_clear, tls_type = 0; | |
102890f0 AM |
8118 | bfd_vma value; |
8119 | bfd_boolean ok_tprel, is_local; | |
8120 | long toc_ref_index = 0; | |
8121 | int expecting_tls_get_addr = 0; | |
663a1470 | 8122 | bfd_boolean ret = FALSE; |
411e1bfb | 8123 | |
102890f0 AM |
8124 | r_symndx = ELF64_R_SYM (rel->r_info); |
8125 | if (!get_sym_h (&h, &sym, &sym_sec, &tls_mask, &locsyms, | |
8126 | r_symndx, ibfd)) | |
8127 | { | |
8128 | err_free_rel: | |
8129 | if (elf_section_data (sec)->relocs != relstart) | |
8130 | free (relstart); | |
8131 | if (toc_ref != NULL) | |
8132 | free (toc_ref); | |
8133 | if (locsyms != NULL | |
0ffa91dd | 8134 | && (elf_symtab_hdr (ibfd).contents |
102890f0 AM |
8135 | != (unsigned char *) locsyms)) |
8136 | free (locsyms); | |
663a1470 | 8137 | return ret; |
102890f0 | 8138 | } |
411e1bfb | 8139 | |
102890f0 AM |
8140 | if (h != NULL) |
8141 | { | |
766bc656 AM |
8142 | if (h->root.type == bfd_link_hash_defined |
8143 | || h->root.type == bfd_link_hash_defweak) | |
8144 | value = h->root.u.def.value; | |
8145 | else if (h->root.type == bfd_link_hash_undefweak) | |
8146 | value = 0; | |
8147 | else | |
663a1470 AM |
8148 | { |
8149 | found_tls_get_addr_arg = 0; | |
8150 | continue; | |
8151 | } | |
102890f0 AM |
8152 | } |
8153 | else | |
8154 | /* Symbols referenced by TLS relocs must be of type | |
8155 | STT_TLS. So no need for .opd local sym adjust. */ | |
8156 | value = sym->st_value; | |
8157 | ||
8158 | ok_tprel = FALSE; | |
8159 | is_local = FALSE; | |
8160 | if (h == NULL | |
8161 | || !h->def_dynamic) | |
8162 | { | |
8163 | is_local = TRUE; | |
766bc656 AM |
8164 | if (h != NULL |
8165 | && h->root.type == bfd_link_hash_undefweak) | |
8166 | ok_tprel = TRUE; | |
8167 | else | |
8168 | { | |
8169 | value += sym_sec->output_offset; | |
8170 | value += sym_sec->output_section->vma; | |
8171 | value -= htab->elf.tls_sec->vma; | |
8172 | ok_tprel = (value + TP_OFFSET + ((bfd_vma) 1 << 31) | |
8173 | < (bfd_vma) 1 << 32); | |
8174 | } | |
102890f0 | 8175 | } |
951fd09b | 8176 | |
102890f0 | 8177 | r_type = ELF64_R_TYPE (rel->r_info); |
663a1470 AM |
8178 | /* If this section has old-style __tls_get_addr calls |
8179 | without marker relocs, then check that each | |
8180 | __tls_get_addr call reloc is preceded by a reloc | |
8181 | that conceivably belongs to the __tls_get_addr arg | |
8182 | setup insn. If we don't find matching arg setup | |
8183 | relocs, don't do any tls optimization. */ | |
8184 | if (pass == 0 | |
8185 | && sec->has_tls_get_addr_call | |
8186 | && h != NULL | |
8187 | && (h == &htab->tls_get_addr->elf | |
8188 | || h == &htab->tls_get_addr_fd->elf) | |
8189 | && !found_tls_get_addr_arg | |
8190 | && is_branch_reloc (r_type)) | |
8191 | { | |
25f53a85 | 8192 | info->callbacks->minfo (_("%H __tls_get_addr lost arg, " |
663a1470 AM |
8193 | "TLS optimization disabled\n"), |
8194 | ibfd, sec, rel->r_offset); | |
8195 | ret = TRUE; | |
8196 | goto err_free_rel; | |
8197 | } | |
8198 | ||
8199 | found_tls_get_addr_arg = 0; | |
102890f0 AM |
8200 | switch (r_type) |
8201 | { | |
8202 | case R_PPC64_GOT_TLSLD16: | |
8203 | case R_PPC64_GOT_TLSLD16_LO: | |
8204 | expecting_tls_get_addr = 1; | |
663a1470 | 8205 | found_tls_get_addr_arg = 1; |
102890f0 AM |
8206 | /* Fall thru */ |
8207 | ||
8208 | case R_PPC64_GOT_TLSLD16_HI: | |
8209 | case R_PPC64_GOT_TLSLD16_HA: | |
8210 | /* These relocs should never be against a symbol | |
8211 | defined in a shared lib. Leave them alone if | |
8212 | that turns out to be the case. */ | |
8213 | if (!is_local) | |
8214 | continue; | |
411e1bfb | 8215 | |
102890f0 | 8216 | /* LD -> LE */ |
411e1bfb | 8217 | tls_set = 0; |
102890f0 AM |
8218 | tls_clear = TLS_LD; |
8219 | tls_type = TLS_TLS | TLS_LD; | |
8220 | break; | |
411e1bfb | 8221 | |
102890f0 AM |
8222 | case R_PPC64_GOT_TLSGD16: |
8223 | case R_PPC64_GOT_TLSGD16_LO: | |
8224 | expecting_tls_get_addr = 1; | |
663a1470 | 8225 | found_tls_get_addr_arg = 1; |
102890f0 AM |
8226 | /* Fall thru */ |
8227 | ||
8228 | case R_PPC64_GOT_TLSGD16_HI: | |
8229 | case R_PPC64_GOT_TLSGD16_HA: | |
8230 | if (ok_tprel) | |
8231 | /* GD -> LE */ | |
411e1bfb | 8232 | tls_set = 0; |
102890f0 AM |
8233 | else |
8234 | /* GD -> IE */ | |
8235 | tls_set = TLS_TLS | TLS_TPRELGD; | |
8236 | tls_clear = TLS_GD; | |
8237 | tls_type = TLS_TLS | TLS_GD; | |
8238 | break; | |
8239 | ||
8240 | case R_PPC64_GOT_TPREL16_DS: | |
8241 | case R_PPC64_GOT_TPREL16_LO_DS: | |
8242 | case R_PPC64_GOT_TPREL16_HI: | |
8243 | case R_PPC64_GOT_TPREL16_HA: | |
8244 | if (ok_tprel) | |
8245 | { | |
8246 | /* IE -> LE */ | |
8247 | tls_set = 0; | |
8248 | tls_clear = TLS_TPREL; | |
8249 | tls_type = TLS_TLS | TLS_TPREL; | |
8250 | break; | |
8251 | } | |
411e1bfb AM |
8252 | continue; |
8253 | ||
727fc41e AM |
8254 | case R_PPC64_TLSGD: |
8255 | case R_PPC64_TLSLD: | |
663a1470 AM |
8256 | found_tls_get_addr_arg = 1; |
8257 | /* Fall thru */ | |
8258 | ||
8259 | case R_PPC64_TLS: | |
8260 | case R_PPC64_TOC16: | |
8261 | case R_PPC64_TOC16_LO: | |
102890f0 AM |
8262 | if (sym_sec == NULL || sym_sec != toc) |
8263 | continue; | |
8264 | ||
8265 | /* Mark this toc entry as referenced by a TLS | |
8266 | code sequence. We can do that now in the | |
8267 | case of R_PPC64_TLS, and after checking for | |
8268 | tls_get_addr for the TOC16 relocs. */ | |
8269 | if (toc_ref == NULL) | |
663a1470 AM |
8270 | toc_ref = bfd_zmalloc (toc->output_section->rawsize / 8); |
8271 | if (toc_ref == NULL) | |
8272 | goto err_free_rel; | |
8273 | ||
102890f0 AM |
8274 | if (h != NULL) |
8275 | value = h->root.u.def.value; | |
8276 | else | |
8277 | value = sym->st_value; | |
8278 | value += rel->r_addend; | |
8279 | BFD_ASSERT (value < toc->size && value % 8 == 0); | |
663a1470 | 8280 | toc_ref_index = (value + toc->output_offset) / 8; |
727fc41e AM |
8281 | if (r_type == R_PPC64_TLS |
8282 | || r_type == R_PPC64_TLSGD | |
8283 | || r_type == R_PPC64_TLSLD) | |
102890f0 AM |
8284 | { |
8285 | toc_ref[toc_ref_index] = 1; | |
8286 | continue; | |
8287 | } | |
8288 | ||
8289 | if (pass != 0 && toc_ref[toc_ref_index] == 0) | |
8290 | continue; | |
8291 | ||
8292 | tls_set = 0; | |
8293 | tls_clear = 0; | |
8294 | expecting_tls_get_addr = 2; | |
8295 | break; | |
8296 | ||
8297 | case R_PPC64_TPREL64: | |
8298 | if (pass == 0 | |
8299 | || sec != toc | |
8300 | || toc_ref == NULL | |
663a1470 | 8301 | || !toc_ref[(rel->r_offset + toc->output_offset) / 8]) |
102890f0 AM |
8302 | continue; |
8303 | if (ok_tprel) | |
8304 | { | |
8305 | /* IE -> LE */ | |
8306 | tls_set = TLS_EXPLICIT; | |
8307 | tls_clear = TLS_TPREL; | |
8308 | break; | |
8309 | } | |
8310 | continue; | |
8311 | ||
8312 | case R_PPC64_DTPMOD64: | |
8313 | if (pass == 0 | |
8314 | || sec != toc | |
8315 | || toc_ref == NULL | |
663a1470 | 8316 | || !toc_ref[(rel->r_offset + toc->output_offset) / 8]) |
102890f0 AM |
8317 | continue; |
8318 | if (rel + 1 < relend | |
8319 | && (rel[1].r_info | |
8320 | == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)) | |
8321 | && rel[1].r_offset == rel->r_offset + 8) | |
8322 | { | |
8323 | if (ok_tprel) | |
8324 | /* GD -> LE */ | |
8325 | tls_set = TLS_EXPLICIT | TLS_GD; | |
8326 | else | |
8327 | /* GD -> IE */ | |
8328 | tls_set = TLS_EXPLICIT | TLS_GD | TLS_TPRELGD; | |
8329 | tls_clear = TLS_GD; | |
8330 | } | |
8331 | else | |
8332 | { | |
8333 | if (!is_local) | |
8334 | continue; | |
8335 | ||
8336 | /* LD -> LE */ | |
8337 | tls_set = TLS_EXPLICIT; | |
8338 | tls_clear = TLS_LD; | |
8339 | } | |
8340 | break; | |
8341 | ||
8342 | default: | |
8343 | continue; | |
8344 | } | |
8345 | ||
8346 | if (pass == 0) | |
8347 | { | |
727fc41e AM |
8348 | if (!expecting_tls_get_addr |
8349 | || !sec->has_tls_get_addr_call) | |
102890f0 AM |
8350 | continue; |
8351 | ||
3a71aa26 AM |
8352 | if (rel + 1 < relend |
8353 | && branch_reloc_hash_match (ibfd, rel + 1, | |
8354 | htab->tls_get_addr, | |
8355 | htab->tls_get_addr_fd)) | |
102890f0 | 8356 | { |
3a71aa26 | 8357 | if (expecting_tls_get_addr == 2) |
102890f0 | 8358 | { |
3a71aa26 | 8359 | /* Check for toc tls entries. */ |
f961d9dd | 8360 | unsigned char *toc_tls; |
3a71aa26 AM |
8361 | int retval; |
8362 | ||
8363 | retval = get_tls_mask (&toc_tls, NULL, NULL, | |
8364 | &locsyms, | |
8365 | rel, ibfd); | |
8366 | if (retval == 0) | |
8367 | goto err_free_rel; | |
663a1470 AM |
8368 | if (toc_tls != NULL) |
8369 | { | |
8370 | if ((*toc_tls & (TLS_GD | TLS_LD)) != 0) | |
8371 | found_tls_get_addr_arg = 1; | |
8372 | if (retval > 1) | |
8373 | toc_ref[toc_ref_index] = 1; | |
8374 | } | |
102890f0 | 8375 | } |
3a71aa26 | 8376 | continue; |
102890f0 AM |
8377 | } |
8378 | ||
8379 | if (expecting_tls_get_addr != 1) | |
8380 | continue; | |
8381 | ||
8382 | /* Uh oh, we didn't find the expected call. We | |
8383 | could just mark this symbol to exclude it | |
8384 | from tls optimization but it's safer to skip | |
663a1470 | 8385 | the entire optimization. */ |
25f53a85 | 8386 | info->callbacks->minfo (_("%H arg lost __tls_get_addr, " |
663a1470 AM |
8387 | "TLS optimization disabled\n"), |
8388 | ibfd, sec, rel->r_offset); | |
8389 | ret = TRUE; | |
8390 | goto err_free_rel; | |
102890f0 AM |
8391 | } |
8392 | ||
85f7a9cb | 8393 | if (expecting_tls_get_addr && htab->tls_get_addr != NULL) |
102890f0 AM |
8394 | { |
8395 | struct plt_entry *ent; | |
8396 | for (ent = htab->tls_get_addr->elf.plt.plist; | |
8397 | ent != NULL; | |
8398 | ent = ent->next) | |
8399 | if (ent->addend == 0) | |
411e1bfb | 8400 | { |
102890f0 | 8401 | if (ent->plt.refcount > 0) |
30038c59 | 8402 | { |
102890f0 AM |
8403 | ent->plt.refcount -= 1; |
8404 | expecting_tls_get_addr = 0; | |
30038c59 | 8405 | } |
102890f0 | 8406 | break; |
411e1bfb | 8407 | } |
102890f0 | 8408 | } |
411e1bfb | 8409 | |
85f7a9cb | 8410 | if (expecting_tls_get_addr && htab->tls_get_addr_fd != NULL) |
102890f0 AM |
8411 | { |
8412 | struct plt_entry *ent; | |
8413 | for (ent = htab->tls_get_addr_fd->elf.plt.plist; | |
8414 | ent != NULL; | |
8415 | ent = ent->next) | |
8416 | if (ent->addend == 0) | |
411e1bfb | 8417 | { |
102890f0 AM |
8418 | if (ent->plt.refcount > 0) |
8419 | ent->plt.refcount -= 1; | |
8420 | break; | |
411e1bfb | 8421 | } |
102890f0 | 8422 | } |
411e1bfb | 8423 | |
102890f0 | 8424 | if (tls_clear == 0) |
30038c59 AM |
8425 | continue; |
8426 | ||
102890f0 AM |
8427 | if ((tls_set & TLS_EXPLICIT) == 0) |
8428 | { | |
8429 | struct got_entry *ent; | |
411e1bfb | 8430 | |
102890f0 AM |
8431 | /* Adjust got entry for this reloc. */ |
8432 | if (h != NULL) | |
8433 | ent = h->got.glist; | |
8434 | else | |
8435 | ent = elf_local_got_ents (ibfd)[r_symndx]; | |
411e1bfb | 8436 | |
102890f0 AM |
8437 | for (; ent != NULL; ent = ent->next) |
8438 | if (ent->addend == rel->r_addend | |
8439 | && ent->owner == ibfd | |
8440 | && ent->tls_type == tls_type) | |
8441 | break; | |
8442 | if (ent == NULL) | |
8443 | abort (); | |
411e1bfb | 8444 | |
102890f0 AM |
8445 | if (tls_set == 0) |
8446 | { | |
8447 | /* We managed to get rid of a got entry. */ | |
8448 | if (ent->got.refcount > 0) | |
8449 | ent->got.refcount -= 1; | |
8450 | } | |
8451 | } | |
8452 | else | |
8453 | { | |
8454 | /* If we got rid of a DTPMOD/DTPREL reloc pair then | |
8455 | we'll lose one or two dyn relocs. */ | |
8456 | if (!dec_dynrel_count (rel->r_info, sec, info, | |
19e08130 | 8457 | NULL, h, sym)) |
102890f0 | 8458 | return FALSE; |
411e1bfb | 8459 | |
102890f0 AM |
8460 | if (tls_set == (TLS_EXPLICIT | TLS_GD)) |
8461 | { | |
8462 | if (!dec_dynrel_count ((rel + 1)->r_info, sec, info, | |
19e08130 | 8463 | NULL, h, sym)) |
102890f0 AM |
8464 | return FALSE; |
8465 | } | |
8466 | } | |
411e1bfb | 8467 | |
102890f0 AM |
8468 | *tls_mask |= tls_set; |
8469 | *tls_mask &= ~tls_clear; | |
8470 | } | |
8c1d1bb8 | 8471 | |
102890f0 AM |
8472 | if (elf_section_data (sec)->relocs != relstart) |
8473 | free (relstart); | |
8474 | } | |
411e1bfb | 8475 | |
663a1470 AM |
8476 | if (locsyms != NULL |
8477 | && (elf_symtab_hdr (ibfd).contents != (unsigned char *) locsyms)) | |
8478 | { | |
8479 | if (!info->keep_memory) | |
8480 | free (locsyms); | |
8481 | else | |
8482 | elf_symtab_hdr (ibfd).contents = (unsigned char *) locsyms; | |
8483 | } | |
8484 | } | |
411e1bfb | 8485 | |
663a1470 AM |
8486 | if (toc_ref != NULL) |
8487 | free (toc_ref); | |
b34976b6 | 8488 | return TRUE; |
1e2f5b6e | 8489 | } |
b34976b6 | 8490 | |
c5614fa4 AM |
8491 | /* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust |
8492 | the values of any global symbols in a toc section that has been | |
8493 | edited. Globals in toc sections should be a rarity, so this function | |
8494 | sets a flag if any are found in toc sections other than the one just | |
8495 | edited, so that futher hash table traversals can be avoided. */ | |
8496 | ||
8497 | struct adjust_toc_info | |
8498 | { | |
8499 | asection *toc; | |
8500 | unsigned long *skip; | |
8501 | bfd_boolean global_toc_syms; | |
8502 | }; | |
8503 | ||
ba761f19 AM |
8504 | enum toc_skip_enum { ref_from_discarded = 1, can_optimize = 2 }; |
8505 | ||
c5614fa4 AM |
8506 | static bfd_boolean |
8507 | adjust_toc_syms (struct elf_link_hash_entry *h, void *inf) | |
8508 | { | |
8509 | struct ppc_link_hash_entry *eh; | |
8510 | struct adjust_toc_info *toc_inf = (struct adjust_toc_info *) inf; | |
854b41e7 | 8511 | unsigned long i; |
c5614fa4 | 8512 | |
c5614fa4 AM |
8513 | if (h->root.type != bfd_link_hash_defined |
8514 | && h->root.type != bfd_link_hash_defweak) | |
8515 | return TRUE; | |
8516 | ||
8517 | eh = (struct ppc_link_hash_entry *) h; | |
8518 | if (eh->adjust_done) | |
8519 | return TRUE; | |
8520 | ||
8521 | if (eh->elf.root.u.def.section == toc_inf->toc) | |
8522 | { | |
854b41e7 AM |
8523 | if (eh->elf.root.u.def.value > toc_inf->toc->rawsize) |
8524 | i = toc_inf->toc->rawsize >> 3; | |
c5614fa4 | 8525 | else |
854b41e7 AM |
8526 | i = eh->elf.root.u.def.value >> 3; |
8527 | ||
ba761f19 | 8528 | if ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0) |
c5614fa4 AM |
8529 | { |
8530 | (*_bfd_error_handler) | |
854b41e7 AM |
8531 | (_("%s defined on removed toc entry"), eh->elf.root.root.string); |
8532 | do | |
8533 | ++i; | |
ba761f19 | 8534 | while ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0); |
854b41e7 | 8535 | eh->elf.root.u.def.value = (bfd_vma) i << 3; |
c5614fa4 | 8536 | } |
854b41e7 AM |
8537 | |
8538 | eh->elf.root.u.def.value -= toc_inf->skip[i]; | |
c5614fa4 AM |
8539 | eh->adjust_done = 1; |
8540 | } | |
8541 | else if (strcmp (eh->elf.root.u.def.section->name, ".toc") == 0) | |
8542 | toc_inf->global_toc_syms = TRUE; | |
8543 | ||
8544 | return TRUE; | |
8545 | } | |
8546 | ||
560c8763 AM |
8547 | /* Return TRUE iff INSN is one we expect on a _LO variety toc/got reloc. */ |
8548 | ||
8549 | static bfd_boolean | |
8550 | ok_lo_toc_insn (unsigned int insn) | |
8551 | { | |
8552 | return ((insn & (0x3f << 26)) == 14u << 26 /* addi */ | |
8553 | || (insn & (0x3f << 26)) == 32u << 26 /* lwz */ | |
8554 | || (insn & (0x3f << 26)) == 34u << 26 /* lbz */ | |
8555 | || (insn & (0x3f << 26)) == 36u << 26 /* stw */ | |
8556 | || (insn & (0x3f << 26)) == 38u << 26 /* stb */ | |
8557 | || (insn & (0x3f << 26)) == 40u << 26 /* lhz */ | |
8558 | || (insn & (0x3f << 26)) == 42u << 26 /* lha */ | |
8559 | || (insn & (0x3f << 26)) == 44u << 26 /* sth */ | |
8560 | || (insn & (0x3f << 26)) == 46u << 26 /* lmw */ | |
8561 | || (insn & (0x3f << 26)) == 47u << 26 /* stmw */ | |
8562 | || (insn & (0x3f << 26)) == 48u << 26 /* lfs */ | |
8563 | || (insn & (0x3f << 26)) == 50u << 26 /* lfd */ | |
8564 | || (insn & (0x3f << 26)) == 52u << 26 /* stfs */ | |
8565 | || (insn & (0x3f << 26)) == 54u << 26 /* stfd */ | |
8566 | || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */ | |
8567 | && (insn & 3) != 1) | |
8568 | || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */ | |
8569 | && ((insn & 3) == 0 || (insn & 3) == 3)) | |
8570 | || (insn & (0x3f << 26)) == 12u << 26 /* addic */); | |
8571 | } | |
8572 | ||
c5614fa4 AM |
8573 | /* Examine all relocs referencing .toc sections in order to remove |
8574 | unused .toc entries. */ | |
8575 | ||
8576 | bfd_boolean | |
33c0ec9d | 8577 | ppc64_elf_edit_toc (struct bfd_link_info *info) |
c5614fa4 AM |
8578 | { |
8579 | bfd *ibfd; | |
8580 | struct adjust_toc_info toc_inf; | |
67f0cbdb | 8581 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
c5614fa4 | 8582 | |
67f0cbdb | 8583 | htab->do_toc_opt = 1; |
c5614fa4 AM |
8584 | toc_inf.global_toc_syms = TRUE; |
8585 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
8586 | { | |
8587 | asection *toc, *sec; | |
8588 | Elf_Internal_Shdr *symtab_hdr; | |
8589 | Elf_Internal_Sym *local_syms; | |
425b145b | 8590 | Elf_Internal_Rela *relstart, *rel, *toc_relocs; |
c5614fa4 AM |
8591 | unsigned long *skip, *drop; |
8592 | unsigned char *used; | |
8593 | unsigned char *keep, last, some_unused; | |
8594 | ||
854b41e7 AM |
8595 | if (!is_ppc64_elf (ibfd)) |
8596 | continue; | |
8597 | ||
c5614fa4 AM |
8598 | toc = bfd_get_section_by_name (ibfd, ".toc"); |
8599 | if (toc == NULL | |
92b7a70f | 8600 | || toc->size == 0 |
dbaa2011 AM |
8601 | || toc->sec_info_type == SEC_INFO_TYPE_JUST_SYMS |
8602 | || discarded_section (toc)) | |
c5614fa4 AM |
8603 | continue; |
8604 | ||
425b145b | 8605 | toc_relocs = NULL; |
c5614fa4 | 8606 | local_syms = NULL; |
0ffa91dd | 8607 | symtab_hdr = &elf_symtab_hdr (ibfd); |
c5614fa4 AM |
8608 | |
8609 | /* Look at sections dropped from the final link. */ | |
8610 | skip = NULL; | |
8611 | relstart = NULL; | |
8612 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
8613 | { | |
8614 | if (sec->reloc_count == 0 | |
dbaa2011 | 8615 | || !discarded_section (sec) |
c5614fa4 AM |
8616 | || get_opd_info (sec) |
8617 | || (sec->flags & SEC_ALLOC) == 0 | |
8618 | || (sec->flags & SEC_DEBUGGING) != 0) | |
8619 | continue; | |
8620 | ||
8621 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, FALSE); | |
8622 | if (relstart == NULL) | |
8623 | goto error_ret; | |
8624 | ||
8625 | /* Run through the relocs to see which toc entries might be | |
8626 | unused. */ | |
8627 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
8628 | { | |
8629 | enum elf_ppc64_reloc_type r_type; | |
8630 | unsigned long r_symndx; | |
8631 | asection *sym_sec; | |
8632 | struct elf_link_hash_entry *h; | |
8633 | Elf_Internal_Sym *sym; | |
8634 | bfd_vma val; | |
8635 | ||
8636 | r_type = ELF64_R_TYPE (rel->r_info); | |
8637 | switch (r_type) | |
8638 | { | |
8639 | default: | |
8640 | continue; | |
8641 | ||
8642 | case R_PPC64_TOC16: | |
8643 | case R_PPC64_TOC16_LO: | |
8644 | case R_PPC64_TOC16_HI: | |
8645 | case R_PPC64_TOC16_HA: | |
8646 | case R_PPC64_TOC16_DS: | |
8647 | case R_PPC64_TOC16_LO_DS: | |
8648 | break; | |
8649 | } | |
8650 | ||
8651 | r_symndx = ELF64_R_SYM (rel->r_info); | |
8652 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
8653 | r_symndx, ibfd)) | |
8654 | goto error_ret; | |
8655 | ||
8656 | if (sym_sec != toc) | |
8657 | continue; | |
8658 | ||
8659 | if (h != NULL) | |
8660 | val = h->root.u.def.value; | |
8661 | else | |
8662 | val = sym->st_value; | |
8663 | val += rel->r_addend; | |
8664 | ||
8665 | if (val >= toc->size) | |
8666 | continue; | |
8667 | ||
8668 | /* Anything in the toc ought to be aligned to 8 bytes. | |
8669 | If not, don't mark as unused. */ | |
8670 | if (val & 7) | |
8671 | continue; | |
8672 | ||
8673 | if (skip == NULL) | |
8674 | { | |
854b41e7 | 8675 | skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8); |
c5614fa4 AM |
8676 | if (skip == NULL) |
8677 | goto error_ret; | |
8678 | } | |
8679 | ||
ba761f19 | 8680 | skip[val >> 3] = ref_from_discarded; |
c5614fa4 AM |
8681 | } |
8682 | ||
8683 | if (elf_section_data (sec)->relocs != relstart) | |
8684 | free (relstart); | |
8685 | } | |
8686 | ||
ba761f19 AM |
8687 | /* For largetoc loads of address constants, we can convert |
8688 | . addis rx,2,addr@got@ha | |
8689 | . ld ry,addr@got@l(rx) | |
8690 | to | |
8691 | . addis rx,2,addr@toc@ha | |
8692 | . addi ry,rx,addr@toc@l | |
8693 | when addr is within 2G of the toc pointer. This then means | |
8694 | that the word storing "addr" in the toc is no longer needed. */ | |
68ffbac6 | 8695 | |
ba761f19 AM |
8696 | if (!ppc64_elf_tdata (ibfd)->has_small_toc_reloc |
8697 | && toc->output_section->rawsize < (bfd_vma) 1 << 31 | |
8698 | && toc->reloc_count != 0) | |
8699 | { | |
8700 | /* Read toc relocs. */ | |
425b145b AM |
8701 | toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL, |
8702 | info->keep_memory); | |
8703 | if (toc_relocs == NULL) | |
ba761f19 AM |
8704 | goto error_ret; |
8705 | ||
425b145b | 8706 | for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel) |
ba761f19 AM |
8707 | { |
8708 | enum elf_ppc64_reloc_type r_type; | |
8709 | unsigned long r_symndx; | |
8710 | asection *sym_sec; | |
8711 | struct elf_link_hash_entry *h; | |
8712 | Elf_Internal_Sym *sym; | |
8713 | bfd_vma val, addr; | |
8714 | ||
8715 | r_type = ELF64_R_TYPE (rel->r_info); | |
8716 | if (r_type != R_PPC64_ADDR64) | |
8717 | continue; | |
8718 | ||
8719 | r_symndx = ELF64_R_SYM (rel->r_info); | |
8720 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
8721 | r_symndx, ibfd)) | |
8722 | goto error_ret; | |
8723 | ||
425b145b | 8724 | if (sym_sec == NULL |
dbaa2011 | 8725 | || discarded_section (sym_sec)) |
425b145b AM |
8726 | continue; |
8727 | ||
afe397ea | 8728 | if (!SYMBOL_REFERENCES_LOCAL (info, h)) |
ba761f19 AM |
8729 | continue; |
8730 | ||
8731 | if (h != NULL) | |
bddc25c9 AM |
8732 | { |
8733 | if (h->type == STT_GNU_IFUNC) | |
8734 | continue; | |
8735 | val = h->root.u.def.value; | |
8736 | } | |
ba761f19 | 8737 | else |
bddc25c9 AM |
8738 | { |
8739 | if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
8740 | continue; | |
8741 | val = sym->st_value; | |
8742 | } | |
ba761f19 AM |
8743 | val += rel->r_addend; |
8744 | val += sym_sec->output_section->vma + sym_sec->output_offset; | |
8745 | ||
8746 | /* We don't yet know the exact toc pointer value, but we | |
8747 | know it will be somewhere in the toc section. Don't | |
8748 | optimize if the difference from any possible toc | |
8749 | pointer is outside [ff..f80008000, 7fff7fff]. */ | |
8750 | addr = toc->output_section->vma + TOC_BASE_OFF; | |
8751 | if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32) | |
8752 | continue; | |
8753 | ||
8754 | addr = toc->output_section->vma + toc->output_section->rawsize; | |
8755 | if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32) | |
8756 | continue; | |
8757 | ||
8758 | if (skip == NULL) | |
8759 | { | |
8760 | skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8); | |
8761 | if (skip == NULL) | |
8762 | goto error_ret; | |
8763 | } | |
8764 | ||
8765 | skip[rel->r_offset >> 3] | |
425b145b | 8766 | |= can_optimize | ((rel - toc_relocs) << 2); |
ba761f19 | 8767 | } |
ba761f19 AM |
8768 | } |
8769 | ||
c5614fa4 AM |
8770 | if (skip == NULL) |
8771 | continue; | |
8772 | ||
8773 | used = bfd_zmalloc (sizeof (*used) * (toc->size + 7) / 8); | |
8774 | if (used == NULL) | |
8775 | { | |
8776 | error_ret: | |
8777 | if (local_syms != NULL | |
8778 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
8779 | free (local_syms); | |
8780 | if (sec != NULL | |
8781 | && relstart != NULL | |
8782 | && elf_section_data (sec)->relocs != relstart) | |
8783 | free (relstart); | |
425b145b AM |
8784 | if (toc_relocs != NULL |
8785 | && elf_section_data (toc)->relocs != toc_relocs) | |
8786 | free (toc_relocs); | |
c5614fa4 AM |
8787 | if (skip != NULL) |
8788 | free (skip); | |
8789 | return FALSE; | |
8790 | } | |
8791 | ||
30038c59 AM |
8792 | /* Now check all kept sections that might reference the toc. |
8793 | Check the toc itself last. */ | |
8794 | for (sec = (ibfd->sections == toc && toc->next ? toc->next | |
8795 | : ibfd->sections); | |
c5614fa4 | 8796 | sec != NULL; |
c5614fa4 | 8797 | sec = (sec == toc ? NULL |
c5614fa4 | 8798 | : sec->next == NULL ? toc |
30038c59 | 8799 | : sec->next == toc && toc->next ? toc->next |
c5614fa4 AM |
8800 | : sec->next)) |
8801 | { | |
8802 | int repeat; | |
8803 | ||
8804 | if (sec->reloc_count == 0 | |
dbaa2011 | 8805 | || discarded_section (sec) |
c5614fa4 AM |
8806 | || get_opd_info (sec) |
8807 | || (sec->flags & SEC_ALLOC) == 0 | |
8808 | || (sec->flags & SEC_DEBUGGING) != 0) | |
8809 | continue; | |
8810 | ||
854b41e7 AM |
8811 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, |
8812 | info->keep_memory); | |
c5614fa4 | 8813 | if (relstart == NULL) |
2915c55b JK |
8814 | { |
8815 | free (used); | |
8816 | goto error_ret; | |
8817 | } | |
c5614fa4 AM |
8818 | |
8819 | /* Mark toc entries referenced as used. */ | |
c5614fa4 | 8820 | do |
d4f1ee75 AM |
8821 | { |
8822 | repeat = 0; | |
8823 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
8824 | { | |
8825 | enum elf_ppc64_reloc_type r_type; | |
8826 | unsigned long r_symndx; | |
8827 | asection *sym_sec; | |
8828 | struct elf_link_hash_entry *h; | |
8829 | Elf_Internal_Sym *sym; | |
8830 | bfd_vma val; | |
8831 | enum {no_check, check_lo, check_ha} insn_check; | |
98528052 | 8832 | |
d4f1ee75 AM |
8833 | r_type = ELF64_R_TYPE (rel->r_info); |
8834 | switch (r_type) | |
8835 | { | |
8836 | default: | |
8837 | insn_check = no_check; | |
8838 | break; | |
98528052 | 8839 | |
d4f1ee75 AM |
8840 | case R_PPC64_GOT_TLSLD16_HA: |
8841 | case R_PPC64_GOT_TLSGD16_HA: | |
8842 | case R_PPC64_GOT_TPREL16_HA: | |
8843 | case R_PPC64_GOT_DTPREL16_HA: | |
8844 | case R_PPC64_GOT16_HA: | |
8845 | case R_PPC64_TOC16_HA: | |
8846 | insn_check = check_ha; | |
8847 | break; | |
98528052 | 8848 | |
d4f1ee75 AM |
8849 | case R_PPC64_GOT_TLSLD16_LO: |
8850 | case R_PPC64_GOT_TLSGD16_LO: | |
8851 | case R_PPC64_GOT_TPREL16_LO_DS: | |
8852 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
8853 | case R_PPC64_GOT16_LO: | |
8854 | case R_PPC64_GOT16_LO_DS: | |
8855 | case R_PPC64_TOC16_LO: | |
8856 | case R_PPC64_TOC16_LO_DS: | |
8857 | insn_check = check_lo; | |
8858 | break; | |
8859 | } | |
560c8763 | 8860 | |
d4f1ee75 AM |
8861 | if (insn_check != no_check) |
8862 | { | |
8863 | bfd_vma off = rel->r_offset & ~3; | |
8864 | unsigned char buf[4]; | |
8865 | unsigned int insn; | |
c5614fa4 | 8866 | |
d4f1ee75 AM |
8867 | if (!bfd_get_section_contents (ibfd, sec, buf, off, 4)) |
8868 | { | |
8869 | free (used); | |
8870 | goto error_ret; | |
8871 | } | |
8872 | insn = bfd_get_32 (ibfd, buf); | |
8873 | if (insn_check == check_lo | |
8874 | ? !ok_lo_toc_insn (insn) | |
8875 | : ((insn & ((0x3f << 26) | 0x1f << 16)) | |
8876 | != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */)) | |
8877 | { | |
8878 | char str[12]; | |
8879 | ||
8880 | ppc64_elf_tdata (ibfd)->unexpected_toc_insn = 1; | |
8881 | sprintf (str, "%#08x", insn); | |
8882 | info->callbacks->einfo | |
8883 | (_("%P: %H: toc optimization is not supported for" | |
8884 | " %s instruction.\n"), | |
8885 | ibfd, sec, rel->r_offset & ~3, str); | |
8886 | } | |
8887 | } | |
c5614fa4 | 8888 | |
d4f1ee75 AM |
8889 | switch (r_type) |
8890 | { | |
8891 | case R_PPC64_TOC16: | |
8892 | case R_PPC64_TOC16_LO: | |
8893 | case R_PPC64_TOC16_HI: | |
8894 | case R_PPC64_TOC16_HA: | |
8895 | case R_PPC64_TOC16_DS: | |
8896 | case R_PPC64_TOC16_LO_DS: | |
8897 | /* In case we're taking addresses of toc entries. */ | |
8898 | case R_PPC64_ADDR64: | |
8899 | break; | |
c5614fa4 | 8900 | |
d4f1ee75 AM |
8901 | default: |
8902 | continue; | |
8903 | } | |
c5614fa4 | 8904 | |
d4f1ee75 AM |
8905 | r_symndx = ELF64_R_SYM (rel->r_info); |
8906 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
8907 | r_symndx, ibfd)) | |
8908 | { | |
8909 | free (used); | |
8910 | goto error_ret; | |
8911 | } | |
c5614fa4 | 8912 | |
d4f1ee75 AM |
8913 | if (sym_sec != toc) |
8914 | continue; | |
c5614fa4 | 8915 | |
d4f1ee75 AM |
8916 | if (h != NULL) |
8917 | val = h->root.u.def.value; | |
8918 | else | |
8919 | val = sym->st_value; | |
8920 | val += rel->r_addend; | |
ba761f19 | 8921 | |
d4f1ee75 AM |
8922 | if (val >= toc->size) |
8923 | continue; | |
ba761f19 | 8924 | |
d4f1ee75 AM |
8925 | if ((skip[val >> 3] & can_optimize) != 0) |
8926 | { | |
8927 | bfd_vma off; | |
8928 | unsigned char opc; | |
8929 | ||
8930 | switch (r_type) | |
8931 | { | |
8932 | case R_PPC64_TOC16_HA: | |
ba761f19 | 8933 | break; |
ba761f19 | 8934 | |
d4f1ee75 AM |
8935 | case R_PPC64_TOC16_LO_DS: |
8936 | off = rel->r_offset; | |
8937 | off += (bfd_big_endian (ibfd) ? -2 : 3); | |
8938 | if (!bfd_get_section_contents (ibfd, sec, &opc, | |
8939 | off, 1)) | |
8940 | { | |
8941 | free (used); | |
8942 | goto error_ret; | |
8943 | } | |
8944 | if ((opc & (0x3f << 2)) == (58u << 2)) | |
8945 | break; | |
8946 | /* Fall thru */ | |
ba761f19 | 8947 | |
d4f1ee75 AM |
8948 | default: |
8949 | /* Wrong sort of reloc, or not a ld. We may | |
8950 | as well clear ref_from_discarded too. */ | |
8951 | skip[val >> 3] = 0; | |
8952 | } | |
8953 | } | |
8954 | ||
8955 | if (sec != toc) | |
8956 | used[val >> 3] = 1; | |
8957 | /* For the toc section, we only mark as used if this | |
8958 | entry itself isn't unused. */ | |
8959 | else if ((used[rel->r_offset >> 3] | |
8960 | || !(skip[rel->r_offset >> 3] & ref_from_discarded)) | |
8961 | && !used[val >> 3]) | |
8962 | { | |
8963 | /* Do all the relocs again, to catch reference | |
8964 | chains. */ | |
8965 | repeat = 1; | |
8966 | used[val >> 3] = 1; | |
8967 | } | |
8968 | } | |
8969 | } | |
c5614fa4 | 8970 | while (repeat); |
854b41e7 AM |
8971 | |
8972 | if (elf_section_data (sec)->relocs != relstart) | |
8973 | free (relstart); | |
c5614fa4 AM |
8974 | } |
8975 | ||
8976 | /* Merge the used and skip arrays. Assume that TOC | |
8977 | doublewords not appearing as either used or unused belong | |
8978 | to to an entry more than one doubleword in size. */ | |
8979 | for (drop = skip, keep = used, last = 0, some_unused = 0; | |
8980 | drop < skip + (toc->size + 7) / 8; | |
8981 | ++drop, ++keep) | |
8982 | { | |
8983 | if (*keep) | |
8984 | { | |
ba761f19 AM |
8985 | *drop &= ~ref_from_discarded; |
8986 | if ((*drop & can_optimize) != 0) | |
8987 | some_unused = 1; | |
c5614fa4 AM |
8988 | last = 0; |
8989 | } | |
b140b010 | 8990 | else if ((*drop & ref_from_discarded) != 0) |
c5614fa4 AM |
8991 | { |
8992 | some_unused = 1; | |
ba761f19 | 8993 | last = ref_from_discarded; |
c5614fa4 AM |
8994 | } |
8995 | else | |
8996 | *drop = last; | |
8997 | } | |
8998 | ||
8999 | free (used); | |
9000 | ||
9001 | if (some_unused) | |
9002 | { | |
9003 | bfd_byte *contents, *src; | |
9004 | unsigned long off; | |
d62b3684 | 9005 | Elf_Internal_Sym *sym; |
ba761f19 | 9006 | bfd_boolean local_toc_syms = FALSE; |
c5614fa4 AM |
9007 | |
9008 | /* Shuffle the toc contents, and at the same time convert the | |
9009 | skip array from booleans into offsets. */ | |
9010 | if (!bfd_malloc_and_get_section (ibfd, toc, &contents)) | |
9011 | goto error_ret; | |
9012 | ||
9013 | elf_section_data (toc)->this_hdr.contents = contents; | |
9014 | ||
9015 | for (src = contents, off = 0, drop = skip; | |
9016 | src < contents + toc->size; | |
9017 | src += 8, ++drop) | |
9018 | { | |
ba761f19 AM |
9019 | if ((*drop & (can_optimize | ref_from_discarded)) != 0) |
9020 | off += 8; | |
c5614fa4 AM |
9021 | else if (off != 0) |
9022 | { | |
9023 | *drop = off; | |
9024 | memcpy (src - off, src, 8); | |
9025 | } | |
9026 | } | |
854b41e7 | 9027 | *drop = off; |
c5614fa4 AM |
9028 | toc->rawsize = toc->size; |
9029 | toc->size = src - contents - off; | |
9030 | ||
ba761f19 AM |
9031 | /* Adjust addends for relocs against the toc section sym, |
9032 | and optimize any accesses we can. */ | |
c5614fa4 AM |
9033 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) |
9034 | { | |
9035 | if (sec->reloc_count == 0 | |
dbaa2011 | 9036 | || discarded_section (sec)) |
c5614fa4 AM |
9037 | continue; |
9038 | ||
9039 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, | |
854b41e7 | 9040 | info->keep_memory); |
c5614fa4 AM |
9041 | if (relstart == NULL) |
9042 | goto error_ret; | |
9043 | ||
9044 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
9045 | { | |
9046 | enum elf_ppc64_reloc_type r_type; | |
9047 | unsigned long r_symndx; | |
9048 | asection *sym_sec; | |
9049 | struct elf_link_hash_entry *h; | |
854b41e7 | 9050 | bfd_vma val; |
c5614fa4 AM |
9051 | |
9052 | r_type = ELF64_R_TYPE (rel->r_info); | |
9053 | switch (r_type) | |
9054 | { | |
9055 | default: | |
9056 | continue; | |
9057 | ||
9058 | case R_PPC64_TOC16: | |
9059 | case R_PPC64_TOC16_LO: | |
9060 | case R_PPC64_TOC16_HI: | |
9061 | case R_PPC64_TOC16_HA: | |
9062 | case R_PPC64_TOC16_DS: | |
9063 | case R_PPC64_TOC16_LO_DS: | |
9064 | case R_PPC64_ADDR64: | |
9065 | break; | |
9066 | } | |
9067 | ||
9068 | r_symndx = ELF64_R_SYM (rel->r_info); | |
9069 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
9070 | r_symndx, ibfd)) | |
9071 | goto error_ret; | |
9072 | ||
ba761f19 | 9073 | if (sym_sec != toc) |
c5614fa4 AM |
9074 | continue; |
9075 | ||
ba761f19 AM |
9076 | if (h != NULL) |
9077 | val = h->root.u.def.value; | |
9078 | else | |
9079 | { | |
9080 | val = sym->st_value; | |
9081 | if (val != 0) | |
9082 | local_toc_syms = TRUE; | |
9083 | } | |
9084 | ||
9085 | val += rel->r_addend; | |
854b41e7 AM |
9086 | |
9087 | if (val > toc->rawsize) | |
9088 | val = toc->rawsize; | |
ba761f19 AM |
9089 | else if ((skip[val >> 3] & ref_from_discarded) != 0) |
9090 | continue; | |
9091 | else if ((skip[val >> 3] & can_optimize) != 0) | |
9092 | { | |
9093 | Elf_Internal_Rela *tocrel | |
425b145b | 9094 | = toc_relocs + (skip[val >> 3] >> 2); |
ba761f19 AM |
9095 | unsigned long tsym = ELF64_R_SYM (tocrel->r_info); |
9096 | ||
9097 | switch (r_type) | |
9098 | { | |
9099 | case R_PPC64_TOC16_HA: | |
9100 | rel->r_info = ELF64_R_INFO (tsym, R_PPC64_TOC16_HA); | |
9101 | break; | |
9102 | ||
9103 | case R_PPC64_TOC16_LO_DS: | |
9104 | rel->r_info = ELF64_R_INFO (tsym, R_PPC64_LO_DS_OPT); | |
9105 | break; | |
9106 | ||
9107 | default: | |
28942f62 AM |
9108 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) |
9109 | ppc_howto_init (); | |
b140b010 | 9110 | info->callbacks->einfo |
bc30df16 | 9111 | (_("%P: %H: %s references " |
b140b010 AM |
9112 | "optimized away TOC entry\n"), |
9113 | ibfd, sec, rel->r_offset, | |
9114 | ppc64_elf_howto_table[r_type]->name); | |
9115 | bfd_set_error (bfd_error_bad_value); | |
9116 | goto error_ret; | |
ba761f19 AM |
9117 | } |
9118 | rel->r_addend = tocrel->r_addend; | |
9119 | elf_section_data (sec)->relocs = relstart; | |
9120 | continue; | |
9121 | } | |
9122 | ||
9123 | if (h != NULL || sym->st_value != 0) | |
9124 | continue; | |
854b41e7 AM |
9125 | |
9126 | rel->r_addend -= skip[val >> 3]; | |
9127 | elf_section_data (sec)->relocs = relstart; | |
c5614fa4 | 9128 | } |
854b41e7 AM |
9129 | |
9130 | if (elf_section_data (sec)->relocs != relstart) | |
9131 | free (relstart); | |
c5614fa4 AM |
9132 | } |
9133 | ||
9134 | /* We shouldn't have local or global symbols defined in the TOC, | |
9135 | but handle them anyway. */ | |
df22d223 AM |
9136 | if (local_syms != NULL) |
9137 | for (sym = local_syms; | |
9138 | sym < local_syms + symtab_hdr->sh_info; | |
9139 | ++sym) | |
9140 | if (sym->st_value != 0 | |
9141 | && bfd_section_from_elf_index (ibfd, sym->st_shndx) == toc) | |
9142 | { | |
9143 | unsigned long i; | |
854b41e7 | 9144 | |
df22d223 AM |
9145 | if (sym->st_value > toc->rawsize) |
9146 | i = toc->rawsize >> 3; | |
9147 | else | |
9148 | i = sym->st_value >> 3; | |
854b41e7 | 9149 | |
df22d223 AM |
9150 | if ((skip[i] & (ref_from_discarded | can_optimize)) != 0) |
9151 | { | |
9152 | if (local_toc_syms) | |
9153 | (*_bfd_error_handler) | |
9154 | (_("%s defined on removed toc entry"), | |
9155 | bfd_elf_sym_name (ibfd, symtab_hdr, sym, NULL)); | |
9156 | do | |
9157 | ++i; | |
9158 | while ((skip[i] & (ref_from_discarded | can_optimize))); | |
9159 | sym->st_value = (bfd_vma) i << 3; | |
9160 | } | |
d62b3684 | 9161 | |
df22d223 AM |
9162 | sym->st_value -= skip[i]; |
9163 | symtab_hdr->contents = (unsigned char *) local_syms; | |
9164 | } | |
c5614fa4 | 9165 | |
854b41e7 | 9166 | /* Adjust any global syms defined in this toc input section. */ |
c5614fa4 AM |
9167 | if (toc_inf.global_toc_syms) |
9168 | { | |
9169 | toc_inf.toc = toc; | |
9170 | toc_inf.skip = skip; | |
9171 | toc_inf.global_toc_syms = FALSE; | |
9172 | elf_link_hash_traverse (elf_hash_table (info), adjust_toc_syms, | |
9173 | &toc_inf); | |
9174 | } | |
854b41e7 AM |
9175 | |
9176 | if (toc->reloc_count != 0) | |
9177 | { | |
d4730f92 | 9178 | Elf_Internal_Shdr *rel_hdr; |
854b41e7 AM |
9179 | Elf_Internal_Rela *wrel; |
9180 | bfd_size_type sz; | |
9181 | ||
854b41e7 | 9182 | /* Remove unused toc relocs, and adjust those we keep. */ |
28be611c AM |
9183 | if (toc_relocs == NULL) |
9184 | toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL, | |
9185 | info->keep_memory); | |
9186 | if (toc_relocs == NULL) | |
9187 | goto error_ret; | |
9188 | ||
425b145b AM |
9189 | wrel = toc_relocs; |
9190 | for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel) | |
ba761f19 AM |
9191 | if ((skip[rel->r_offset >> 3] |
9192 | & (ref_from_discarded | can_optimize)) == 0) | |
854b41e7 AM |
9193 | { |
9194 | wrel->r_offset = rel->r_offset - skip[rel->r_offset >> 3]; | |
9195 | wrel->r_info = rel->r_info; | |
9196 | wrel->r_addend = rel->r_addend; | |
9197 | ++wrel; | |
9198 | } | |
9199 | else if (!dec_dynrel_count (rel->r_info, toc, info, | |
9200 | &local_syms, NULL, NULL)) | |
9201 | goto error_ret; | |
9202 | ||
425b145b AM |
9203 | elf_section_data (toc)->relocs = toc_relocs; |
9204 | toc->reloc_count = wrel - toc_relocs; | |
d4730f92 BS |
9205 | rel_hdr = _bfd_elf_single_rel_hdr (toc); |
9206 | sz = rel_hdr->sh_entsize; | |
9207 | rel_hdr->sh_size = toc->reloc_count * sz; | |
854b41e7 | 9208 | } |
c5614fa4 | 9209 | } |
28be611c AM |
9210 | else if (toc_relocs != NULL |
9211 | && elf_section_data (toc)->relocs != toc_relocs) | |
425b145b | 9212 | free (toc_relocs); |
c5614fa4 AM |
9213 | |
9214 | if (local_syms != NULL | |
9215 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
9216 | { | |
9217 | if (!info->keep_memory) | |
9218 | free (local_syms); | |
9219 | else | |
9220 | symtab_hdr->contents = (unsigned char *) local_syms; | |
9221 | } | |
9222 | free (skip); | |
9223 | } | |
9224 | ||
9225 | return TRUE; | |
9226 | } | |
9227 | ||
1bbe0902 AM |
9228 | /* Return true iff input section I references the TOC using |
9229 | instructions limited to +/-32k offsets. */ | |
9230 | ||
9231 | bfd_boolean | |
9232 | ppc64_elf_has_small_toc_reloc (asection *i) | |
9233 | { | |
9234 | return (is_ppc64_elf (i->owner) | |
9235 | && ppc64_elf_tdata (i->owner)->has_small_toc_reloc); | |
9236 | } | |
9237 | ||
927be08e AM |
9238 | /* Allocate space for one GOT entry. */ |
9239 | ||
9240 | static void | |
9241 | allocate_got (struct elf_link_hash_entry *h, | |
9242 | struct bfd_link_info *info, | |
9243 | struct got_entry *gent) | |
9244 | { | |
9245 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
9246 | bfd_boolean dyn; | |
9247 | struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h; | |
9248 | int entsize = (gent->tls_type & eh->tls_mask & (TLS_GD | TLS_LD) | |
9249 | ? 16 : 8); | |
9250 | int rentsize = (gent->tls_type & eh->tls_mask & TLS_GD | |
9251 | ? 2 : 1) * sizeof (Elf64_External_Rela); | |
9252 | asection *got = ppc64_elf_tdata (gent->owner)->got; | |
9253 | ||
9254 | gent->got.offset = got->size; | |
9255 | got->size += entsize; | |
9256 | ||
9257 | dyn = htab->elf.dynamic_sections_created; | |
19e08130 | 9258 | if (h->type == STT_GNU_IFUNC) |
927be08e | 9259 | { |
33e44f2e | 9260 | htab->elf.irelplt->size += rentsize; |
19e08130 | 9261 | htab->got_reli_size += rentsize; |
927be08e | 9262 | } |
19e08130 AM |
9263 | else if ((info->shared |
9264 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)) | |
9265 | && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
9266 | || h->root.type != bfd_link_hash_undefweak)) | |
927be08e | 9267 | { |
19e08130 | 9268 | asection *relgot = ppc64_elf_tdata (gent->owner)->relgot; |
927be08e | 9269 | relgot->size += rentsize; |
927be08e AM |
9270 | } |
9271 | } | |
9272 | ||
7865406b AM |
9273 | /* This function merges got entries in the same toc group. */ |
9274 | ||
9275 | static void | |
9276 | merge_got_entries (struct got_entry **pent) | |
9277 | { | |
9278 | struct got_entry *ent, *ent2; | |
9279 | ||
9280 | for (ent = *pent; ent != NULL; ent = ent->next) | |
9281 | if (!ent->is_indirect) | |
9282 | for (ent2 = ent->next; ent2 != NULL; ent2 = ent2->next) | |
9283 | if (!ent2->is_indirect | |
9284 | && ent2->addend == ent->addend | |
9285 | && ent2->tls_type == ent->tls_type | |
9286 | && elf_gp (ent2->owner) == elf_gp (ent->owner)) | |
9287 | { | |
9288 | ent2->is_indirect = TRUE; | |
9289 | ent2->got.ent = ent; | |
9290 | } | |
9291 | } | |
9292 | ||
65f38f15 AM |
9293 | /* Allocate space in .plt, .got and associated reloc sections for |
9294 | dynamic relocs. */ | |
5bd4f169 | 9295 | |
b34976b6 | 9296 | static bfd_boolean |
4ce794b7 | 9297 | allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf) |
5bd4f169 | 9298 | { |
65f38f15 AM |
9299 | struct bfd_link_info *info; |
9300 | struct ppc_link_hash_table *htab; | |
5bd4f169 | 9301 | asection *s; |
65f38f15 | 9302 | struct ppc_link_hash_entry *eh; |
6061a67d | 9303 | struct elf_dyn_relocs *p; |
0b8bcf0d | 9304 | struct got_entry **pgent, *gent; |
5bd4f169 | 9305 | |
e92d460e | 9306 | if (h->root.type == bfd_link_hash_indirect) |
b34976b6 | 9307 | return TRUE; |
5bd4f169 | 9308 | |
65f38f15 AM |
9309 | info = (struct bfd_link_info *) inf; |
9310 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
9311 | if (htab == NULL) |
9312 | return FALSE; | |
5bd4f169 | 9313 | |
e054468f AM |
9314 | if ((htab->elf.dynamic_sections_created |
9315 | && h->dynindx != -1 | |
9316 | && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h)) | |
9317 | || h->type == STT_GNU_IFUNC) | |
5bd4f169 | 9318 | { |
411e1bfb AM |
9319 | struct plt_entry *pent; |
9320 | bfd_boolean doneone = FALSE; | |
9321 | for (pent = h->plt.plist; pent != NULL; pent = pent->next) | |
9322 | if (pent->plt.refcount > 0) | |
9323 | { | |
25f23106 AM |
9324 | if (!htab->elf.dynamic_sections_created |
9325 | || h->dynindx == -1) | |
e054468f | 9326 | { |
33e44f2e | 9327 | s = htab->elf.iplt; |
e054468f | 9328 | pent->plt.offset = s->size; |
b9e5796b | 9329 | s->size += PLT_ENTRY_SIZE (htab); |
33e44f2e | 9330 | s = htab->elf.irelplt; |
e054468f AM |
9331 | } |
9332 | else | |
9333 | { | |
9334 | /* If this is the first .plt entry, make room for the special | |
9335 | first entry. */ | |
33e44f2e | 9336 | s = htab->elf.splt; |
e054468f | 9337 | if (s->size == 0) |
b9e5796b | 9338 | s->size += PLT_INITIAL_ENTRY_SIZE (htab); |
e054468f AM |
9339 | |
9340 | pent->plt.offset = s->size; | |
9341 | ||
9342 | /* Make room for this entry. */ | |
b9e5796b | 9343 | s->size += PLT_ENTRY_SIZE (htab); |
e054468f AM |
9344 | |
9345 | /* Make room for the .glink code. */ | |
9346 | s = htab->glink; | |
9347 | if (s->size == 0) | |
9348 | s->size += GLINK_CALL_STUB_SIZE; | |
b9e5796b AM |
9349 | if (htab->opd_abi) |
9350 | { | |
9351 | /* We need bigger stubs past index 32767. */ | |
9352 | if (s->size >= GLINK_CALL_STUB_SIZE + 32768*2*4) | |
9353 | s->size += 4; | |
9354 | s->size += 2*4; | |
9355 | } | |
9356 | else | |
e054468f | 9357 | s->size += 4; |
e054468f AM |
9358 | |
9359 | /* We also need to make an entry in the .rela.plt section. */ | |
33e44f2e | 9360 | s = htab->elf.srelplt; |
e054468f | 9361 | } |
eea6121a | 9362 | s->size += sizeof (Elf64_External_Rela); |
411e1bfb AM |
9363 | doneone = TRUE; |
9364 | } | |
9365 | else | |
9366 | pent->plt.offset = (bfd_vma) -1; | |
9367 | if (!doneone) | |
65f38f15 | 9368 | { |
411e1bfb | 9369 | h->plt.plist = NULL; |
f5385ebf | 9370 | h->needs_plt = 0; |
65f38f15 AM |
9371 | } |
9372 | } | |
9373 | else | |
9374 | { | |
411e1bfb | 9375 | h->plt.plist = NULL; |
f5385ebf | 9376 | h->needs_plt = 0; |
65f38f15 AM |
9377 | } |
9378 | ||
951fd09b AM |
9379 | eh = (struct ppc_link_hash_entry *) h; |
9380 | /* Run through the TLS GD got entries first if we're changing them | |
9381 | to TPREL. */ | |
e7b938ca | 9382 | if ((eh->tls_mask & TLS_TPRELGD) != 0) |
951fd09b AM |
9383 | for (gent = h->got.glist; gent != NULL; gent = gent->next) |
9384 | if (gent->got.refcount > 0 | |
9385 | && (gent->tls_type & TLS_GD) != 0) | |
9386 | { | |
9387 | /* This was a GD entry that has been converted to TPREL. If | |
9388 | there happens to be a TPREL entry we can use that one. */ | |
9389 | struct got_entry *ent; | |
9390 | for (ent = h->got.glist; ent != NULL; ent = ent->next) | |
9391 | if (ent->got.refcount > 0 | |
9392 | && (ent->tls_type & TLS_TPREL) != 0 | |
e717da7e AM |
9393 | && ent->addend == gent->addend |
9394 | && ent->owner == gent->owner) | |
951fd09b AM |
9395 | { |
9396 | gent->got.refcount = 0; | |
9397 | break; | |
9398 | } | |
9399 | ||
9400 | /* If not, then we'll be using our own TPREL entry. */ | |
9401 | if (gent->got.refcount != 0) | |
9402 | gent->tls_type = TLS_TLS | TLS_TPREL; | |
9403 | } | |
9404 | ||
7865406b AM |
9405 | /* Remove any list entry that won't generate a word in the GOT before |
9406 | we call merge_got_entries. Otherwise we risk merging to empty | |
9407 | entries. */ | |
0b8bcf0d AM |
9408 | pgent = &h->got.glist; |
9409 | while ((gent = *pgent) != NULL) | |
411e1bfb | 9410 | if (gent->got.refcount > 0) |
7865406b AM |
9411 | { |
9412 | if ((gent->tls_type & TLS_LD) != 0 | |
9413 | && !h->def_dynamic) | |
9414 | { | |
9415 | ppc64_tlsld_got (gent->owner)->got.refcount += 1; | |
9416 | *pgent = gent->next; | |
9417 | } | |
9418 | else | |
9419 | pgent = &gent->next; | |
9420 | } | |
9421 | else | |
9422 | *pgent = gent->next; | |
9423 | ||
9424 | if (!htab->do_multi_toc) | |
9425 | merge_got_entries (&h->got.glist); | |
9426 | ||
9427 | for (gent = h->got.glist; gent != NULL; gent = gent->next) | |
9428 | if (!gent->is_indirect) | |
411e1bfb AM |
9429 | { |
9430 | /* Make sure this symbol is output as a dynamic symbol. | |
951fd09b AM |
9431 | Undefined weak syms won't yet be marked as dynamic, |
9432 | nor will all TLS symbols. */ | |
411e1bfb | 9433 | if (h->dynindx == -1 |
b099ab9f | 9434 | && !h->forced_local |
25f23106 | 9435 | && h->type != STT_GNU_IFUNC |
b099ab9f | 9436 | && htab->elf.dynamic_sections_created) |
411e1bfb | 9437 | { |
c152c796 | 9438 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
411e1bfb AM |
9439 | return FALSE; |
9440 | } | |
65f38f15 | 9441 | |
0c8d6e5c | 9442 | if (!is_ppc64_elf (gent->owner)) |
927be08e | 9443 | abort (); |
0ffa91dd | 9444 | |
927be08e | 9445 | allocate_got (h, info, gent); |
411e1bfb | 9446 | } |
65f38f15 | 9447 | |
b099ab9f | 9448 | if (eh->dyn_relocs == NULL |
25f23106 | 9449 | || (!htab->elf.dynamic_sections_created |
14b5f73f | 9450 | && h->type != STT_GNU_IFUNC)) |
b34976b6 | 9451 | return TRUE; |
65f38f15 AM |
9452 | |
9453 | /* In the shared -Bsymbolic case, discard space allocated for | |
9454 | dynamic pc-relative relocs against symbols which turn out to be | |
9455 | defined in regular objects. For the normal shared case, discard | |
9456 | space for relocs that have become local due to symbol visibility | |
9457 | changes. */ | |
9458 | ||
9459 | if (info->shared) | |
9460 | { | |
9c7a29a3 | 9461 | /* Relocs that use pc_count are those that appear on a call insn, |
1d483afe | 9462 | or certain REL relocs (see must_be_dyn_reloc) that can be |
9c7a29a3 AM |
9463 | generated via assembly. We want calls to protected symbols to |
9464 | resolve directly to the function rather than going via the plt. | |
9465 | If people want function pointer comparisons to work as expected | |
9466 | then they should avoid writing weird assembly. */ | |
09695f56 | 9467 | if (SYMBOL_CALLS_LOCAL (info, h)) |
65f38f15 | 9468 | { |
6061a67d | 9469 | struct elf_dyn_relocs **pp; |
65f38f15 AM |
9470 | |
9471 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) | |
5bd4f169 | 9472 | { |
65f38f15 AM |
9473 | p->count -= p->pc_count; |
9474 | p->pc_count = 0; | |
9475 | if (p->count == 0) | |
9476 | *pp = p->next; | |
9477 | else | |
9478 | pp = &p->next; | |
5bd4f169 | 9479 | } |
65f38f15 | 9480 | } |
4e795f50 AM |
9481 | |
9482 | /* Also discard relocs on undefined weak syms with non-default | |
9483 | visibility. */ | |
cab87ef9 AM |
9484 | if (eh->dyn_relocs != NULL |
9485 | && h->root.type == bfd_link_hash_undefweak) | |
dfbb6ac9 AM |
9486 | { |
9487 | if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) | |
9488 | eh->dyn_relocs = NULL; | |
9489 | ||
9490 | /* Make sure this symbol is output as a dynamic symbol. | |
9491 | Undefined weak syms won't yet be marked as dynamic. */ | |
9492 | else if (h->dynindx == -1 | |
9493 | && !h->forced_local) | |
9494 | { | |
9495 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) | |
9496 | return FALSE; | |
9497 | } | |
9498 | } | |
65f38f15 | 9499 | } |
25f23106 AM |
9500 | else if (h->type == STT_GNU_IFUNC) |
9501 | { | |
9502 | if (!h->non_got_ref) | |
9503 | eh->dyn_relocs = NULL; | |
9504 | } | |
f4656909 | 9505 | else if (ELIMINATE_COPY_RELOCS) |
65f38f15 AM |
9506 | { |
9507 | /* For the non-shared case, discard space for relocs against | |
9508 | symbols which turn out to need copy relocs or are not | |
9509 | dynamic. */ | |
9510 | ||
f5385ebf | 9511 | if (!h->non_got_ref |
f5385ebf | 9512 | && !h->def_regular) |
65f38f15 AM |
9513 | { |
9514 | /* Make sure this symbol is output as a dynamic symbol. | |
9515 | Undefined weak syms won't yet be marked as dynamic. */ | |
9516 | if (h->dynindx == -1 | |
f5385ebf | 9517 | && !h->forced_local) |
65f38f15 | 9518 | { |
c152c796 | 9519 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 9520 | return FALSE; |
65f38f15 AM |
9521 | } |
9522 | ||
9523 | /* If that succeeded, we know we'll be keeping all the | |
9524 | relocs. */ | |
9525 | if (h->dynindx != -1) | |
9526 | goto keep; | |
9527 | } | |
9528 | ||
9529 | eh->dyn_relocs = NULL; | |
9530 | ||
ec338859 | 9531 | keep: ; |
65f38f15 AM |
9532 | } |
9533 | ||
9534 | /* Finally, allocate space. */ | |
9535 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
9536 | { | |
9537 | asection *sreloc = elf_section_data (p->sec)->sreloc; | |
19e08130 | 9538 | if (eh->elf.type == STT_GNU_IFUNC) |
33e44f2e | 9539 | sreloc = htab->elf.irelplt; |
eea6121a | 9540 | sreloc->size += p->count * sizeof (Elf64_External_Rela); |
65f38f15 AM |
9541 | } |
9542 | ||
b34976b6 | 9543 | return TRUE; |
65f38f15 AM |
9544 | } |
9545 | ||
a345bc8d AM |
9546 | /* Called via elf_link_hash_traverse from ppc64_elf_size_dynamic_sections |
9547 | to set up space for global entry stubs. These are put in glink, | |
9548 | after the branch table. */ | |
65f38f15 | 9549 | |
b34976b6 | 9550 | static bfd_boolean |
a345bc8d | 9551 | size_global_entry_stubs (struct elf_link_hash_entry *h, void *inf) |
65f38f15 | 9552 | { |
a345bc8d AM |
9553 | struct bfd_link_info *info; |
9554 | struct ppc_link_hash_table *htab; | |
9555 | struct plt_entry *pent; | |
9556 | asection *s; | |
65f38f15 | 9557 | |
a345bc8d AM |
9558 | if (h->root.type == bfd_link_hash_indirect) |
9559 | return TRUE; | |
65f38f15 | 9560 | |
a345bc8d AM |
9561 | if (!h->pointer_equality_needed) |
9562 | return TRUE; | |
65f38f15 | 9563 | |
a345bc8d AM |
9564 | if (h->def_regular) |
9565 | return TRUE; | |
65f38f15 | 9566 | |
a345bc8d AM |
9567 | info = inf; |
9568 | htab = ppc_hash_table (info); | |
9569 | if (htab == NULL) | |
9570 | return FALSE; | |
9571 | ||
9572 | s = htab->glink; | |
9573 | for (pent = h->plt.plist; pent != NULL; pent = pent->next) | |
9574 | if (pent->plt.offset != (bfd_vma) -1 | |
9575 | && pent->addend == 0) | |
9576 | { | |
afe397ea AM |
9577 | /* For ELFv2, if this symbol is not defined in a regular file |
9578 | and we are not generating a shared library or pie, then we | |
9579 | need to define the symbol in the executable on a call stub. | |
9580 | This is to avoid text relocations. */ | |
a345bc8d | 9581 | s->size = (s->size + 15) & -16; |
afe397ea AM |
9582 | h->root.u.def.section = s; |
9583 | h->root.u.def.value = s->size; | |
a345bc8d AM |
9584 | s->size += 16; |
9585 | break; | |
9586 | } | |
9587 | return TRUE; | |
9588 | } | |
9589 | ||
9590 | /* Set DF_TEXTREL if we find any dynamic relocs that apply to | |
9591 | read-only sections. */ | |
9592 | ||
9593 | static bfd_boolean | |
9594 | maybe_set_textrel (struct elf_link_hash_entry *h, void *info) | |
9595 | { | |
9596 | if (h->root.type == bfd_link_hash_indirect) | |
9597 | return TRUE; | |
9598 | ||
9599 | if (readonly_dynrelocs (h)) | |
9600 | { | |
9601 | ((struct bfd_link_info *) info)->flags |= DF_TEXTREL; | |
9602 | ||
9603 | /* Not an error, just cut short the traversal. */ | |
9604 | return FALSE; | |
65f38f15 | 9605 | } |
b34976b6 | 9606 | return TRUE; |
65f38f15 AM |
9607 | } |
9608 | ||
9609 | /* Set the sizes of the dynamic sections. */ | |
9610 | ||
b34976b6 | 9611 | static bfd_boolean |
ee67d69a | 9612 | ppc64_elf_size_dynamic_sections (bfd *output_bfd, |
4ce794b7 | 9613 | struct bfd_link_info *info) |
65f38f15 AM |
9614 | { |
9615 | struct ppc_link_hash_table *htab; | |
9616 | bfd *dynobj; | |
9617 | asection *s; | |
b34976b6 | 9618 | bfd_boolean relocs; |
65f38f15 | 9619 | bfd *ibfd; |
7865406b | 9620 | struct got_entry *first_tlsld; |
65f38f15 AM |
9621 | |
9622 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
9623 | if (htab == NULL) |
9624 | return FALSE; | |
9625 | ||
65f38f15 AM |
9626 | dynobj = htab->elf.dynobj; |
9627 | if (dynobj == NULL) | |
9628 | abort (); | |
9629 | ||
9630 | if (htab->elf.dynamic_sections_created) | |
9631 | { | |
9632 | /* Set the contents of the .interp section to the interpreter. */ | |
36af4a4e | 9633 | if (info->executable) |
65f38f15 | 9634 | { |
3d4d4302 | 9635 | s = bfd_get_linker_section (dynobj, ".interp"); |
65f38f15 AM |
9636 | if (s == NULL) |
9637 | abort (); | |
eea6121a | 9638 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; |
65f38f15 AM |
9639 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; |
9640 | } | |
9641 | } | |
9642 | ||
9643 | /* Set up .got offsets for local syms, and space for local dynamic | |
9644 | relocs. */ | |
9645 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
9646 | { | |
411e1bfb AM |
9647 | struct got_entry **lgot_ents; |
9648 | struct got_entry **end_lgot_ents; | |
e054468f AM |
9649 | struct plt_entry **local_plt; |
9650 | struct plt_entry **end_local_plt; | |
f961d9dd | 9651 | unsigned char *lgot_masks; |
65f38f15 AM |
9652 | bfd_size_type locsymcount; |
9653 | Elf_Internal_Shdr *symtab_hdr; | |
65f38f15 | 9654 | |
0c8d6e5c | 9655 | if (!is_ppc64_elf (ibfd)) |
65f38f15 AM |
9656 | continue; |
9657 | ||
9658 | for (s = ibfd->sections; s != NULL; s = s->next) | |
9659 | { | |
19e08130 | 9660 | struct ppc_dyn_relocs *p; |
65f38f15 | 9661 | |
6edfbbad | 9662 | for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next) |
65f38f15 | 9663 | { |
ec338859 AM |
9664 | if (!bfd_is_abs_section (p->sec) |
9665 | && bfd_is_abs_section (p->sec->output_section)) | |
9666 | { | |
9667 | /* Input section has been discarded, either because | |
9668 | it is a copy of a linkonce section or due to | |
9669 | linker script /DISCARD/, so we'll be discarding | |
9670 | the relocs too. */ | |
9671 | } | |
248866a8 | 9672 | else if (p->count != 0) |
ec338859 | 9673 | { |
19e08130 AM |
9674 | asection *srel = elf_section_data (p->sec)->sreloc; |
9675 | if (p->ifunc) | |
33e44f2e | 9676 | srel = htab->elf.irelplt; |
eea6121a | 9677 | srel->size += p->count * sizeof (Elf64_External_Rela); |
248866a8 AM |
9678 | if ((p->sec->output_section->flags & SEC_READONLY) != 0) |
9679 | info->flags |= DF_TEXTREL; | |
ec338859 | 9680 | } |
65f38f15 AM |
9681 | } |
9682 | } | |
9683 | ||
411e1bfb AM |
9684 | lgot_ents = elf_local_got_ents (ibfd); |
9685 | if (!lgot_ents) | |
65f38f15 AM |
9686 | continue; |
9687 | ||
0ffa91dd | 9688 | symtab_hdr = &elf_symtab_hdr (ibfd); |
65f38f15 | 9689 | locsymcount = symtab_hdr->sh_info; |
411e1bfb | 9690 | end_lgot_ents = lgot_ents + locsymcount; |
e054468f AM |
9691 | local_plt = (struct plt_entry **) end_lgot_ents; |
9692 | end_local_plt = local_plt + locsymcount; | |
f961d9dd | 9693 | lgot_masks = (unsigned char *) end_local_plt; |
e717da7e | 9694 | s = ppc64_elf_tdata (ibfd)->got; |
e7b938ca | 9695 | for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks) |
65f38f15 | 9696 | { |
0b8bcf0d | 9697 | struct got_entry **pent, *ent; |
411e1bfb | 9698 | |
0b8bcf0d AM |
9699 | pent = lgot_ents; |
9700 | while ((ent = *pent) != NULL) | |
411e1bfb AM |
9701 | if (ent->got.refcount > 0) |
9702 | { | |
e7b938ca | 9703 | if ((ent->tls_type & *lgot_masks & TLS_LD) != 0) |
411e1bfb | 9704 | { |
927be08e | 9705 | ppc64_tlsld_got (ibfd)->got.refcount += 1; |
0b8bcf0d | 9706 | *pent = ent->next; |
411e1bfb AM |
9707 | } |
9708 | else | |
9709 | { | |
19e08130 AM |
9710 | unsigned int ent_size = 8; |
9711 | unsigned int rel_size = sizeof (Elf64_External_Rela); | |
9712 | ||
eea6121a | 9713 | ent->got.offset = s->size; |
e7b938ca | 9714 | if ((ent->tls_type & *lgot_masks & TLS_GD) != 0) |
927be08e | 9715 | { |
19e08130 AM |
9716 | ent_size *= 2; |
9717 | rel_size *= 2; | |
9718 | } | |
9719 | s->size += ent_size; | |
9720 | if ((*lgot_masks & PLT_IFUNC) != 0) | |
9721 | { | |
33e44f2e | 9722 | htab->elf.irelplt->size += rel_size; |
19e08130 AM |
9723 | htab->got_reli_size += rel_size; |
9724 | } | |
9725 | else if (info->shared) | |
9726 | { | |
9727 | asection *srel = ppc64_elf_tdata (ibfd)->relgot; | |
9728 | srel->size += rel_size; | |
927be08e | 9729 | } |
0b8bcf0d | 9730 | pent = &ent->next; |
411e1bfb AM |
9731 | } |
9732 | } | |
9733 | else | |
0b8bcf0d | 9734 | *pent = ent->next; |
65f38f15 | 9735 | } |
e054468f AM |
9736 | |
9737 | /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */ | |
9738 | for (; local_plt < end_local_plt; ++local_plt) | |
9739 | { | |
9740 | struct plt_entry *ent; | |
9741 | ||
9742 | for (ent = *local_plt; ent != NULL; ent = ent->next) | |
9743 | if (ent->plt.refcount > 0) | |
9744 | { | |
33e44f2e | 9745 | s = htab->elf.iplt; |
e054468f | 9746 | ent->plt.offset = s->size; |
b9e5796b | 9747 | s->size += PLT_ENTRY_SIZE (htab); |
e054468f | 9748 | |
33e44f2e | 9749 | htab->elf.irelplt->size += sizeof (Elf64_External_Rela); |
e054468f AM |
9750 | } |
9751 | else | |
9752 | ent->plt.offset = (bfd_vma) -1; | |
9753 | } | |
65f38f15 AM |
9754 | } |
9755 | ||
9756 | /* Allocate global sym .plt and .got entries, and space for global | |
9757 | sym dynamic relocs. */ | |
4ce794b7 | 9758 | elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info); |
a345bc8d AM |
9759 | /* Stash the end of glink branch table. */ |
9760 | if (htab->glink != NULL) | |
9761 | htab->glink->rawsize = htab->glink->size; | |
9762 | ||
9763 | if (!htab->opd_abi && !info->shared) | |
9764 | elf_link_hash_traverse (&htab->elf, size_global_entry_stubs, info); | |
65f38f15 | 9765 | |
7865406b | 9766 | first_tlsld = NULL; |
102890f0 AM |
9767 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) |
9768 | { | |
7865406b AM |
9769 | struct got_entry *ent; |
9770 | ||
0c8d6e5c | 9771 | if (!is_ppc64_elf (ibfd)) |
102890f0 AM |
9772 | continue; |
9773 | ||
7865406b AM |
9774 | ent = ppc64_tlsld_got (ibfd); |
9775 | if (ent->got.refcount > 0) | |
102890f0 | 9776 | { |
7865406b | 9777 | if (!htab->do_multi_toc && first_tlsld != NULL) |
102890f0 | 9778 | { |
7865406b AM |
9779 | ent->is_indirect = TRUE; |
9780 | ent->got.ent = first_tlsld; | |
9781 | } | |
9782 | else | |
9783 | { | |
9784 | if (first_tlsld == NULL) | |
9785 | first_tlsld = ent; | |
9786 | s = ppc64_elf_tdata (ibfd)->got; | |
9787 | ent->got.offset = s->size; | |
9788 | ent->owner = ibfd; | |
9789 | s->size += 16; | |
9790 | if (info->shared) | |
9791 | { | |
9792 | asection *srel = ppc64_elf_tdata (ibfd)->relgot; | |
9793 | srel->size += sizeof (Elf64_External_Rela); | |
9794 | } | |
102890f0 AM |
9795 | } |
9796 | } | |
9797 | else | |
7865406b | 9798 | ent->got.offset = (bfd_vma) -1; |
102890f0 AM |
9799 | } |
9800 | ||
65f38f15 AM |
9801 | /* We now have determined the sizes of the various dynamic sections. |
9802 | Allocate memory for them. */ | |
b34976b6 | 9803 | relocs = FALSE; |
65f38f15 AM |
9804 | for (s = dynobj->sections; s != NULL; s = s->next) |
9805 | { | |
9806 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
9807 | continue; | |
9808 | ||
4ce794b7 | 9809 | if (s == htab->brlt || s == htab->relbrlt) |
721956f4 AM |
9810 | /* These haven't been allocated yet; don't strip. */ |
9811 | continue; | |
33e44f2e AM |
9812 | else if (s == htab->elf.sgot |
9813 | || s == htab->elf.splt | |
9814 | || s == htab->elf.iplt | |
c456f082 AM |
9815 | || s == htab->glink |
9816 | || s == htab->dynbss) | |
65f38f15 AM |
9817 | { |
9818 | /* Strip this section if we don't need it; see the | |
9819 | comment below. */ | |
5bd4f169 | 9820 | } |
58d180e8 AM |
9821 | else if (s == htab->glink_eh_frame) |
9822 | { | |
9823 | if (!bfd_is_abs_section (s->output_section)) | |
9824 | /* Not sized yet. */ | |
9825 | continue; | |
9826 | } | |
70cc837d | 9827 | else if (CONST_STRNEQ (s->name, ".rela")) |
5bd4f169 | 9828 | { |
c456f082 | 9829 | if (s->size != 0) |
5bd4f169 | 9830 | { |
33e44f2e | 9831 | if (s != htab->elf.srelplt) |
b34976b6 | 9832 | relocs = TRUE; |
5bd4f169 AM |
9833 | |
9834 | /* We use the reloc_count field as a counter if we need | |
9835 | to copy relocs into the output file. */ | |
9836 | s->reloc_count = 0; | |
9837 | } | |
9838 | } | |
65f38f15 | 9839 | else |
5bd4f169 AM |
9840 | { |
9841 | /* It's not one of our sections, so don't allocate space. */ | |
9842 | continue; | |
9843 | } | |
9844 | ||
eea6121a | 9845 | if (s->size == 0) |
5bd4f169 | 9846 | { |
c456f082 AM |
9847 | /* If we don't need this section, strip it from the |
9848 | output file. This is mostly to handle .rela.bss and | |
9849 | .rela.plt. We must create both sections in | |
9850 | create_dynamic_sections, because they must be created | |
9851 | before the linker maps input sections to output | |
9852 | sections. The linker does that before | |
9853 | adjust_dynamic_symbol is called, and it is that | |
9854 | function which decides whether anything needs to go | |
9855 | into these sections. */ | |
8423293d | 9856 | s->flags |= SEC_EXCLUDE; |
5bd4f169 AM |
9857 | continue; |
9858 | } | |
9859 | ||
c456f082 | 9860 | if ((s->flags & SEC_HAS_CONTENTS) == 0) |
5f333394 AM |
9861 | continue; |
9862 | ||
65f38f15 AM |
9863 | /* Allocate memory for the section contents. We use bfd_zalloc |
9864 | here in case unused entries are not reclaimed before the | |
9865 | section's contents are written out. This should not happen, | |
411e1bfb AM |
9866 | but this way if it does we get a R_PPC64_NONE reloc in .rela |
9867 | sections instead of garbage. | |
9868 | We also rely on the section contents being zero when writing | |
9869 | the GOT. */ | |
eea6121a | 9870 | s->contents = bfd_zalloc (dynobj, s->size); |
65f38f15 | 9871 | if (s->contents == NULL) |
b34976b6 | 9872 | return FALSE; |
5bd4f169 AM |
9873 | } |
9874 | ||
e717da7e AM |
9875 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) |
9876 | { | |
0c8d6e5c | 9877 | if (!is_ppc64_elf (ibfd)) |
7b53ace3 AM |
9878 | continue; |
9879 | ||
e717da7e | 9880 | s = ppc64_elf_tdata (ibfd)->got; |
33e44f2e | 9881 | if (s != NULL && s != htab->elf.sgot) |
e717da7e | 9882 | { |
eea6121a | 9883 | if (s->size == 0) |
8423293d | 9884 | s->flags |= SEC_EXCLUDE; |
e717da7e AM |
9885 | else |
9886 | { | |
eea6121a | 9887 | s->contents = bfd_zalloc (ibfd, s->size); |
e717da7e AM |
9888 | if (s->contents == NULL) |
9889 | return FALSE; | |
9890 | } | |
9891 | } | |
9892 | s = ppc64_elf_tdata (ibfd)->relgot; | |
9893 | if (s != NULL) | |
9894 | { | |
eea6121a | 9895 | if (s->size == 0) |
8423293d | 9896 | s->flags |= SEC_EXCLUDE; |
e717da7e AM |
9897 | else |
9898 | { | |
eea6121a | 9899 | s->contents = bfd_zalloc (ibfd, s->size); |
e717da7e AM |
9900 | if (s->contents == NULL) |
9901 | return FALSE; | |
9902 | relocs = TRUE; | |
9903 | s->reloc_count = 0; | |
9904 | } | |
9905 | } | |
9906 | } | |
9907 | ||
e86ce104 | 9908 | if (htab->elf.dynamic_sections_created) |
5bd4f169 | 9909 | { |
e8910a83 AM |
9910 | bfd_boolean tls_opt; |
9911 | ||
5bd4f169 AM |
9912 | /* Add some entries to the .dynamic section. We fill in the |
9913 | values later, in ppc64_elf_finish_dynamic_sections, but we | |
9914 | must add the entries now so that we get the correct size for | |
9915 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
9916 | dynamic linker and used by the debugger. */ | |
dc810e39 | 9917 | #define add_dynamic_entry(TAG, VAL) \ |
5a580b3a | 9918 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) |
dc810e39 | 9919 | |
36af4a4e | 9920 | if (info->executable) |
5bd4f169 | 9921 | { |
dc810e39 | 9922 | if (!add_dynamic_entry (DT_DEBUG, 0)) |
b34976b6 | 9923 | return FALSE; |
5bd4f169 AM |
9924 | } |
9925 | ||
33e44f2e | 9926 | if (htab->elf.splt != NULL && htab->elf.splt->size != 0) |
5bd4f169 | 9927 | { |
dc810e39 AM |
9928 | if (!add_dynamic_entry (DT_PLTGOT, 0) |
9929 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
9930 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
5d1634d7 AM |
9931 | || !add_dynamic_entry (DT_JMPREL, 0) |
9932 | || !add_dynamic_entry (DT_PPC64_GLINK, 0)) | |
b34976b6 | 9933 | return FALSE; |
5bd4f169 AM |
9934 | } |
9935 | ||
ee67d69a | 9936 | if (NO_OPD_RELOCS && abiversion (output_bfd) <= 1) |
19397422 AM |
9937 | { |
9938 | if (!add_dynamic_entry (DT_PPC64_OPD, 0) | |
9939 | || !add_dynamic_entry (DT_PPC64_OPDSZ, 0)) | |
b34976b6 | 9940 | return FALSE; |
19397422 AM |
9941 | } |
9942 | ||
e7d1c40c | 9943 | tls_opt = (!htab->params->no_tls_get_addr_opt |
e8910a83 AM |
9944 | && htab->tls_get_addr_fd != NULL |
9945 | && htab->tls_get_addr_fd->elf.plt.plist != NULL); | |
9946 | if (tls_opt || !htab->opd_abi) | |
9947 | { | |
9948 | if (!add_dynamic_entry (DT_PPC64_OPT, tls_opt ? PPC64_OPT_TLS : 0)) | |
9949 | return FALSE; | |
9950 | } | |
a7f2871e | 9951 | |
5bd4f169 AM |
9952 | if (relocs) |
9953 | { | |
dc810e39 AM |
9954 | if (!add_dynamic_entry (DT_RELA, 0) |
9955 | || !add_dynamic_entry (DT_RELASZ, 0) | |
9956 | || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela))) | |
b34976b6 | 9957 | return FALSE; |
5bd4f169 | 9958 | |
65f38f15 AM |
9959 | /* If any dynamic relocs apply to a read-only section, |
9960 | then we need a DT_TEXTREL entry. */ | |
248866a8 | 9961 | if ((info->flags & DF_TEXTREL) == 0) |
a345bc8d | 9962 | elf_link_hash_traverse (&htab->elf, maybe_set_textrel, info); |
5bd4f169 | 9963 | |
65f38f15 | 9964 | if ((info->flags & DF_TEXTREL) != 0) |
5bd4f169 | 9965 | { |
65f38f15 | 9966 | if (!add_dynamic_entry (DT_TEXTREL, 0)) |
b34976b6 | 9967 | return FALSE; |
5bd4f169 | 9968 | } |
5bd4f169 | 9969 | } |
5bd4f169 | 9970 | } |
65f38f15 | 9971 | #undef add_dynamic_entry |
5bd4f169 | 9972 | |
b34976b6 | 9973 | return TRUE; |
5bd4f169 AM |
9974 | } |
9975 | ||
a345bc8d AM |
9976 | /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */ |
9977 | ||
9978 | static bfd_boolean | |
9979 | ppc64_elf_hash_symbol (struct elf_link_hash_entry *h) | |
9980 | { | |
9981 | if (h->plt.plist != NULL | |
9982 | && !h->def_regular | |
9983 | && !h->pointer_equality_needed) | |
9984 | return FALSE; | |
9985 | ||
9986 | return _bfd_elf_hash_symbol (h); | |
9987 | } | |
9988 | ||
721956f4 | 9989 | /* Determine the type of stub needed, if any, for a call. */ |
5bd4f169 | 9990 | |
4ce794b7 AM |
9991 | static inline enum ppc_stub_type |
9992 | ppc_type_of_stub (asection *input_sec, | |
9993 | const Elf_Internal_Rela *rel, | |
9994 | struct ppc_link_hash_entry **hash, | |
e054468f | 9995 | struct plt_entry **plt_ent, |
6911b7dc AM |
9996 | bfd_vma destination, |
9997 | unsigned long local_off) | |
5bd4f169 | 9998 | { |
721956f4 AM |
9999 | struct ppc_link_hash_entry *h = *hash; |
10000 | bfd_vma location; | |
10001 | bfd_vma branch_offset; | |
10002 | bfd_vma max_branch_offset; | |
4ce794b7 | 10003 | enum elf_ppc64_reloc_type r_type; |
5bd4f169 | 10004 | |
721956f4 AM |
10005 | if (h != NULL) |
10006 | { | |
e054468f | 10007 | struct plt_entry *ent; |
7fe2b9a6 | 10008 | struct ppc_link_hash_entry *fdh = h; |
b31867b6 AM |
10009 | if (h->oh != NULL |
10010 | && h->oh->is_func_descriptor) | |
7b8f6675 AM |
10011 | { |
10012 | fdh = ppc_follow_link (h->oh); | |
10013 | *hash = fdh; | |
10014 | } | |
8387904d | 10015 | |
e054468f AM |
10016 | for (ent = fdh->elf.plt.plist; ent != NULL; ent = ent->next) |
10017 | if (ent->addend == rel->r_addend | |
10018 | && ent->plt.offset != (bfd_vma) -1) | |
10019 | { | |
e054468f AM |
10020 | *plt_ent = ent; |
10021 | return ppc_stub_plt_call; | |
10022 | } | |
5bd4f169 | 10023 | |
7fe2b9a6 AM |
10024 | /* Here, we know we don't have a plt entry. If we don't have a |
10025 | either a defined function descriptor or a defined entry symbol | |
10026 | in a regular object file, then it is pointless trying to make | |
10027 | any other type of stub. */ | |
854b41e7 AM |
10028 | if (!is_static_defined (&fdh->elf) |
10029 | && !is_static_defined (&h->elf)) | |
721956f4 | 10030 | return ppc_stub_none; |
5d1634d7 | 10031 | } |
e054468f AM |
10032 | else if (elf_local_got_ents (input_sec->owner) != NULL) |
10033 | { | |
10034 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (input_sec->owner); | |
10035 | struct plt_entry **local_plt = (struct plt_entry **) | |
10036 | elf_local_got_ents (input_sec->owner) + symtab_hdr->sh_info; | |
10037 | unsigned long r_symndx = ELF64_R_SYM (rel->r_info); | |
10038 | ||
10039 | if (local_plt[r_symndx] != NULL) | |
10040 | { | |
10041 | struct plt_entry *ent; | |
10042 | ||
10043 | for (ent = local_plt[r_symndx]; ent != NULL; ent = ent->next) | |
10044 | if (ent->addend == rel->r_addend | |
10045 | && ent->plt.offset != (bfd_vma) -1) | |
10046 | { | |
10047 | *plt_ent = ent; | |
10048 | return ppc_stub_plt_call; | |
10049 | } | |
10050 | } | |
10051 | } | |
5d1634d7 | 10052 | |
721956f4 AM |
10053 | /* Determine where the call point is. */ |
10054 | location = (input_sec->output_offset | |
10055 | + input_sec->output_section->vma | |
10056 | + rel->r_offset); | |
5d1634d7 | 10057 | |
721956f4 AM |
10058 | branch_offset = destination - location; |
10059 | r_type = ELF64_R_TYPE (rel->r_info); | |
5d1634d7 | 10060 | |
721956f4 AM |
10061 | /* Determine if a long branch stub is needed. */ |
10062 | max_branch_offset = 1 << 25; | |
4ce794b7 | 10063 | if (r_type != R_PPC64_REL24) |
721956f4 | 10064 | max_branch_offset = 1 << 15; |
5d1634d7 | 10065 | |
6911b7dc | 10066 | if (branch_offset + max_branch_offset >= 2 * max_branch_offset - local_off) |
721956f4 AM |
10067 | /* We need a stub. Figure out whether a long_branch or plt_branch |
10068 | is needed later. */ | |
10069 | return ppc_stub_long_branch; | |
5d1634d7 | 10070 | |
721956f4 | 10071 | return ppc_stub_none; |
5d1634d7 AM |
10072 | } |
10073 | ||
794e51c0 AM |
10074 | /* With power7 weakly ordered memory model, it is possible for ld.so |
10075 | to update a plt entry in one thread and have another thread see a | |
10076 | stale zero toc entry. To avoid this we need some sort of acquire | |
10077 | barrier in the call stub. One solution is to make the load of the | |
10078 | toc word seem to appear to depend on the load of the function entry | |
10079 | word. Another solution is to test for r2 being zero, and branch to | |
10080 | the appropriate glink entry if so. | |
10081 | ||
10082 | . fake dep barrier compare | |
71a39c98 AM |
10083 | . ld 12,xxx(2) ld 12,xxx(2) |
10084 | . mtctr 12 mtctr 12 | |
10085 | . xor 11,12,12 ld 2,xxx+8(2) | |
794e51c0 AM |
10086 | . add 2,2,11 cmpldi 2,0 |
10087 | . ld 2,xxx+8(2) bnectr+ | |
10088 | . bctr b <glink_entry> | |
10089 | ||
10090 | The solution involving the compare turns out to be faster, so | |
10091 | that's what we use unless the branch won't reach. */ | |
10092 | ||
10093 | #define ALWAYS_USE_FAKE_DEP 0 | |
10094 | #define ALWAYS_EMIT_R2SAVE 0 | |
5d1634d7 | 10095 | |
5d1634d7 AM |
10096 | #define PPC_LO(v) ((v) & 0xffff) |
10097 | #define PPC_HI(v) (((v) >> 16) & 0xffff) | |
10098 | #define PPC_HA(v) PPC_HI ((v) + 0x8000) | |
10099 | ||
794e51c0 AM |
10100 | static inline unsigned int |
10101 | plt_stub_size (struct ppc_link_hash_table *htab, | |
10102 | struct ppc_stub_hash_entry *stub_entry, | |
10103 | bfd_vma off) | |
10104 | { | |
b9e5796b AM |
10105 | unsigned size = 12; |
10106 | ||
10107 | if (ALWAYS_EMIT_R2SAVE | |
10108 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
10109 | size += 4; | |
10110 | if (PPC_HA (off) != 0) | |
794e51c0 | 10111 | size += 4; |
b9e5796b AM |
10112 | if (htab->opd_abi) |
10113 | { | |
10114 | size += 4; | |
e7d1c40c | 10115 | if (htab->params->plt_static_chain) |
b9e5796b | 10116 | size += 4; |
e7d1c40c | 10117 | if (htab->params->plt_thread_safe) |
b9e5796b | 10118 | size += 8; |
e7d1c40c | 10119 | if (PPC_HA (off + 8 + 8 * htab->params->plt_static_chain) != PPC_HA (off)) |
b9e5796b AM |
10120 | size += 4; |
10121 | } | |
794e51c0 AM |
10122 | if (stub_entry->h != NULL |
10123 | && (stub_entry->h == htab->tls_get_addr_fd | |
10124 | || stub_entry->h == htab->tls_get_addr) | |
e7d1c40c | 10125 | && !htab->params->no_tls_get_addr_opt) |
794e51c0 AM |
10126 | size += 13 * 4; |
10127 | return size; | |
10128 | } | |
10129 | ||
10130 | /* If this stub would cross fewer 2**plt_stub_align boundaries if we align, | |
10131 | then return the padding needed to do so. */ | |
10132 | static inline unsigned int | |
10133 | plt_stub_pad (struct ppc_link_hash_table *htab, | |
10134 | struct ppc_stub_hash_entry *stub_entry, | |
10135 | bfd_vma plt_off) | |
10136 | { | |
e7d1c40c | 10137 | int stub_align = 1 << htab->params->plt_stub_align; |
794e51c0 AM |
10138 | unsigned stub_size = plt_stub_size (htab, stub_entry, plt_off); |
10139 | bfd_vma stub_off = stub_entry->stub_sec->size; | |
10140 | ||
10141 | if (((stub_off + stub_size - 1) & -stub_align) - (stub_off & -stub_align) | |
10142 | > (stub_size & -stub_align)) | |
10143 | return stub_align - (stub_off & (stub_align - 1)); | |
10144 | return 0; | |
10145 | } | |
10146 | ||
10147 | /* Build a .plt call stub. */ | |
10148 | ||
10149 | static inline bfd_byte * | |
10150 | build_plt_stub (struct ppc_link_hash_table *htab, | |
10151 | struct ppc_stub_hash_entry *stub_entry, | |
10152 | bfd_byte *p, bfd_vma offset, Elf_Internal_Rela *r) | |
10153 | { | |
e7d1c40c | 10154 | bfd *obfd = htab->params->stub_bfd; |
b9e5796b | 10155 | bfd_boolean plt_load_toc = htab->opd_abi; |
e7d1c40c AM |
10156 | bfd_boolean plt_static_chain = htab->params->plt_static_chain; |
10157 | bfd_boolean plt_thread_safe = htab->params->plt_thread_safe; | |
794e51c0 AM |
10158 | bfd_boolean use_fake_dep = plt_thread_safe; |
10159 | bfd_vma cmp_branch_off = 0; | |
10160 | ||
10161 | if (!ALWAYS_USE_FAKE_DEP | |
b9e5796b | 10162 | && plt_load_toc |
794e51c0 AM |
10163 | && plt_thread_safe |
10164 | && !(stub_entry->h != NULL | |
10165 | && (stub_entry->h == htab->tls_get_addr_fd | |
10166 | || stub_entry->h == htab->tls_get_addr) | |
e7d1c40c | 10167 | && !htab->params->no_tls_get_addr_opt)) |
794e51c0 AM |
10168 | { |
10169 | bfd_vma pltoff = stub_entry->plt_ent->plt.offset & ~1; | |
b9e5796b AM |
10170 | bfd_vma pltindex = ((pltoff - PLT_INITIAL_ENTRY_SIZE (htab)) |
10171 | / PLT_ENTRY_SIZE (htab)); | |
794e51c0 AM |
10172 | bfd_vma glinkoff = GLINK_CALL_STUB_SIZE + pltindex * 8; |
10173 | bfd_vma to, from; | |
10174 | ||
68d62958 AM |
10175 | if (pltindex > 32768) |
10176 | glinkoff += (pltindex - 32768) * 4; | |
794e51c0 AM |
10177 | to = (glinkoff |
10178 | + htab->glink->output_offset | |
10179 | + htab->glink->output_section->vma); | |
10180 | from = (p - stub_entry->stub_sec->contents | |
10181 | + 4 * (ALWAYS_EMIT_R2SAVE | |
10182 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
10183 | + 4 * (PPC_HA (offset) != 0) | |
10184 | + 4 * (PPC_HA (offset + 8 + 8 * plt_static_chain) | |
10185 | != PPC_HA (offset)) | |
10186 | + 4 * (plt_static_chain != 0) | |
10187 | + 20 | |
10188 | + stub_entry->stub_sec->output_offset | |
10189 | + stub_entry->stub_sec->output_section->vma); | |
10190 | cmp_branch_off = to - from; | |
10191 | use_fake_dep = cmp_branch_off + (1 << 25) >= (1 << 26); | |
10192 | } | |
10193 | ||
ac2df442 AM |
10194 | if (PPC_HA (offset) != 0) |
10195 | { | |
176a0d42 AM |
10196 | if (r != NULL) |
10197 | { | |
794e51c0 AM |
10198 | if (ALWAYS_EMIT_R2SAVE |
10199 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
10200 | r[0].r_offset += 4; | |
176a0d42 | 10201 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA); |
3b421ab3 | 10202 | r[1].r_offset = r[0].r_offset + 4; |
176a0d42 AM |
10203 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); |
10204 | r[1].r_addend = r[0].r_addend; | |
b9e5796b | 10205 | if (plt_load_toc) |
176a0d42 | 10206 | { |
b9e5796b | 10207 | if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset)) |
c7131b65 | 10208 | { |
b9e5796b AM |
10209 | r[2].r_offset = r[1].r_offset + 4; |
10210 | r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO); | |
10211 | r[2].r_addend = r[0].r_addend; | |
10212 | } | |
10213 | else | |
10214 | { | |
10215 | r[2].r_offset = r[1].r_offset + 8 + 8 * use_fake_dep; | |
10216 | r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); | |
10217 | r[2].r_addend = r[0].r_addend + 8; | |
10218 | if (plt_static_chain) | |
10219 | { | |
10220 | r[3].r_offset = r[2].r_offset + 4; | |
10221 | r[3].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); | |
10222 | r[3].r_addend = r[0].r_addend + 16; | |
10223 | } | |
c7131b65 | 10224 | } |
176a0d42 AM |
10225 | } |
10226 | } | |
794e51c0 AM |
10227 | if (ALWAYS_EMIT_R2SAVE |
10228 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
a078d95a | 10229 | bfd_put_32 (obfd, STD_R2_0R1 + STK_TOC (htab), p), p += 4; |
71a39c98 AM |
10230 | bfd_put_32 (obfd, ADDIS_R11_R2 | PPC_HA (offset), p), p += 4; |
10231 | bfd_put_32 (obfd, LD_R12_0R11 | PPC_LO (offset), p), p += 4; | |
b9e5796b AM |
10232 | if (plt_load_toc |
10233 | && PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset)) | |
ac2df442 | 10234 | { |
71a39c98 | 10235 | bfd_put_32 (obfd, ADDI_R11_R11 | PPC_LO (offset), p), p += 4; |
ac2df442 AM |
10236 | offset = 0; |
10237 | } | |
71a39c98 | 10238 | bfd_put_32 (obfd, MTCTR_R12, p), p += 4; |
b9e5796b | 10239 | if (plt_load_toc) |
794e51c0 | 10240 | { |
b9e5796b AM |
10241 | if (use_fake_dep) |
10242 | { | |
10243 | bfd_put_32 (obfd, XOR_R2_R12_R12, p), p += 4; | |
10244 | bfd_put_32 (obfd, ADD_R11_R11_R2, p), p += 4; | |
10245 | } | |
10246 | bfd_put_32 (obfd, LD_R2_0R11 | PPC_LO (offset + 8), p), p += 4; | |
10247 | if (plt_static_chain) | |
10248 | bfd_put_32 (obfd, LD_R11_0R11 | PPC_LO (offset + 16), p), p += 4; | |
794e51c0 | 10249 | } |
ac2df442 AM |
10250 | } |
10251 | else | |
10252 | { | |
176a0d42 AM |
10253 | if (r != NULL) |
10254 | { | |
794e51c0 AM |
10255 | if (ALWAYS_EMIT_R2SAVE |
10256 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
10257 | r[0].r_offset += 4; | |
176a0d42 | 10258 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); |
b9e5796b | 10259 | if (plt_load_toc) |
176a0d42 | 10260 | { |
b9e5796b | 10261 | if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset)) |
c7131b65 | 10262 | { |
b9e5796b AM |
10263 | r[1].r_offset = r[0].r_offset + 4; |
10264 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16); | |
10265 | r[1].r_addend = r[0].r_addend; | |
10266 | } | |
10267 | else | |
10268 | { | |
10269 | r[1].r_offset = r[0].r_offset + 8 + 8 * use_fake_dep; | |
10270 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); | |
10271 | r[1].r_addend = r[0].r_addend + 8 + 8 * plt_static_chain; | |
10272 | if (plt_static_chain) | |
10273 | { | |
10274 | r[2].r_offset = r[1].r_offset + 4; | |
10275 | r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); | |
10276 | r[2].r_addend = r[0].r_addend + 8; | |
10277 | } | |
c7131b65 | 10278 | } |
176a0d42 AM |
10279 | } |
10280 | } | |
794e51c0 AM |
10281 | if (ALWAYS_EMIT_R2SAVE |
10282 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
a078d95a | 10283 | bfd_put_32 (obfd, STD_R2_0R1 + STK_TOC (htab), p), p += 4; |
71a39c98 | 10284 | bfd_put_32 (obfd, LD_R12_0R2 | PPC_LO (offset), p), p += 4; |
b9e5796b AM |
10285 | if (plt_load_toc |
10286 | && PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset)) | |
ac2df442 AM |
10287 | { |
10288 | bfd_put_32 (obfd, ADDI_R2_R2 | PPC_LO (offset), p), p += 4; | |
10289 | offset = 0; | |
10290 | } | |
71a39c98 | 10291 | bfd_put_32 (obfd, MTCTR_R12, p), p += 4; |
b9e5796b | 10292 | if (plt_load_toc) |
794e51c0 | 10293 | { |
b9e5796b AM |
10294 | if (use_fake_dep) |
10295 | { | |
10296 | bfd_put_32 (obfd, XOR_R11_R12_R12, p), p += 4; | |
10297 | bfd_put_32 (obfd, ADD_R2_R2_R11, p), p += 4; | |
10298 | } | |
10299 | if (plt_static_chain) | |
10300 | bfd_put_32 (obfd, LD_R11_0R2 | PPC_LO (offset + 16), p), p += 4; | |
10301 | bfd_put_32 (obfd, LD_R2_0R2 | PPC_LO (offset + 8), p), p += 4; | |
794e51c0 | 10302 | } |
ac2df442 | 10303 | } |
b9e5796b | 10304 | if (plt_load_toc && plt_thread_safe && !use_fake_dep) |
794e51c0 AM |
10305 | { |
10306 | bfd_put_32 (obfd, CMPLDI_R2_0, p), p += 4; | |
10307 | bfd_put_32 (obfd, BNECTR_P4, p), p += 4; | |
22aa0c7e | 10308 | bfd_put_32 (obfd, B_DOT | (cmp_branch_off & 0x3fffffc), p), p += 4; |
794e51c0 AM |
10309 | } |
10310 | else | |
10311 | bfd_put_32 (obfd, BCTR, p), p += 4; | |
5d1634d7 AM |
10312 | return p; |
10313 | } | |
10314 | ||
a7f2871e AM |
10315 | /* Build a special .plt call stub for __tls_get_addr. */ |
10316 | ||
10317 | #define LD_R11_0R3 0xe9630000 | |
10318 | #define LD_R12_0R3 0xe9830000 | |
10319 | #define MR_R0_R3 0x7c601b78 | |
10320 | #define CMPDI_R11_0 0x2c2b0000 | |
10321 | #define ADD_R3_R12_R13 0x7c6c6a14 | |
10322 | #define BEQLR 0x4d820020 | |
10323 | #define MR_R3_R0 0x7c030378 | |
a7f2871e AM |
10324 | #define STD_R11_0R1 0xf9610000 |
10325 | #define BCTRL 0x4e800421 | |
10326 | #define LD_R11_0R1 0xe9610000 | |
a7f2871e AM |
10327 | #define MTLR_R11 0x7d6803a6 |
10328 | ||
10329 | static inline bfd_byte * | |
794e51c0 AM |
10330 | build_tls_get_addr_stub (struct ppc_link_hash_table *htab, |
10331 | struct ppc_stub_hash_entry *stub_entry, | |
10332 | bfd_byte *p, bfd_vma offset, Elf_Internal_Rela *r) | |
a7f2871e | 10333 | { |
e7d1c40c | 10334 | bfd *obfd = htab->params->stub_bfd; |
794e51c0 | 10335 | |
a7f2871e AM |
10336 | bfd_put_32 (obfd, LD_R11_0R3 + 0, p), p += 4; |
10337 | bfd_put_32 (obfd, LD_R12_0R3 + 8, p), p += 4; | |
10338 | bfd_put_32 (obfd, MR_R0_R3, p), p += 4; | |
10339 | bfd_put_32 (obfd, CMPDI_R11_0, p), p += 4; | |
10340 | bfd_put_32 (obfd, ADD_R3_R12_R13, p), p += 4; | |
10341 | bfd_put_32 (obfd, BEQLR, p), p += 4; | |
10342 | bfd_put_32 (obfd, MR_R3_R0, p), p += 4; | |
10343 | bfd_put_32 (obfd, MFLR_R11, p), p += 4; | |
a078d95a | 10344 | bfd_put_32 (obfd, STD_R11_0R1 + STK_LINKER (htab), p), p += 4; |
a7f2871e AM |
10345 | |
10346 | if (r != NULL) | |
10347 | r[0].r_offset += 9 * 4; | |
794e51c0 | 10348 | p = build_plt_stub (htab, stub_entry, p, offset, r); |
a7f2871e AM |
10349 | bfd_put_32 (obfd, BCTRL, p - 4); |
10350 | ||
a078d95a AM |
10351 | bfd_put_32 (obfd, LD_R11_0R1 + STK_LINKER (htab), p), p += 4; |
10352 | bfd_put_32 (obfd, LD_R2_0R1 + STK_TOC (htab), p), p += 4; | |
a7f2871e AM |
10353 | bfd_put_32 (obfd, MTLR_R11, p), p += 4; |
10354 | bfd_put_32 (obfd, BLR, p), p += 4; | |
10355 | ||
10356 | return p; | |
10357 | } | |
10358 | ||
176a0d42 AM |
10359 | static Elf_Internal_Rela * |
10360 | get_relocs (asection *sec, int count) | |
10361 | { | |
10362 | Elf_Internal_Rela *relocs; | |
10363 | struct bfd_elf_section_data *elfsec_data; | |
10364 | ||
10365 | elfsec_data = elf_section_data (sec); | |
10366 | relocs = elfsec_data->relocs; | |
10367 | if (relocs == NULL) | |
10368 | { | |
10369 | bfd_size_type relsize; | |
10370 | relsize = sec->reloc_count * sizeof (*relocs); | |
10371 | relocs = bfd_alloc (sec->owner, relsize); | |
10372 | if (relocs == NULL) | |
10373 | return NULL; | |
10374 | elfsec_data->relocs = relocs; | |
d4730f92 BS |
10375 | elfsec_data->rela.hdr = bfd_zalloc (sec->owner, |
10376 | sizeof (Elf_Internal_Shdr)); | |
10377 | if (elfsec_data->rela.hdr == NULL) | |
10378 | return NULL; | |
10379 | elfsec_data->rela.hdr->sh_size = (sec->reloc_count | |
10380 | * sizeof (Elf64_External_Rela)); | |
10381 | elfsec_data->rela.hdr->sh_entsize = sizeof (Elf64_External_Rela); | |
176a0d42 AM |
10382 | sec->reloc_count = 0; |
10383 | } | |
10384 | relocs += sec->reloc_count; | |
10385 | sec->reloc_count += count; | |
10386 | return relocs; | |
10387 | } | |
10388 | ||
aa374f67 | 10389 | static bfd_vma |
25f53a85 | 10390 | get_r2off (struct bfd_link_info *info, |
aa374f67 AM |
10391 | struct ppc_stub_hash_entry *stub_entry) |
10392 | { | |
25f53a85 | 10393 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
aa374f67 AM |
10394 | bfd_vma r2off = htab->stub_group[stub_entry->target_section->id].toc_off; |
10395 | ||
10396 | if (r2off == 0) | |
10397 | { | |
10398 | /* Support linking -R objects. Get the toc pointer from the | |
10399 | opd entry. */ | |
10400 | char buf[8]; | |
b9e5796b AM |
10401 | if (!htab->opd_abi) |
10402 | return r2off; | |
aa374f67 AM |
10403 | asection *opd = stub_entry->h->elf.root.u.def.section; |
10404 | bfd_vma opd_off = stub_entry->h->elf.root.u.def.value; | |
10405 | ||
10406 | if (strcmp (opd->name, ".opd") != 0 | |
10407 | || opd->reloc_count != 0) | |
10408 | { | |
bc30df16 | 10409 | info->callbacks->einfo (_("%P: cannot find opd entry toc for `%T'\n"), |
25f53a85 | 10410 | stub_entry->h->elf.root.root.string); |
aa374f67 AM |
10411 | bfd_set_error (bfd_error_bad_value); |
10412 | return 0; | |
10413 | } | |
10414 | if (!bfd_get_section_contents (opd->owner, opd, buf, opd_off + 8, 8)) | |
10415 | return 0; | |
10416 | r2off = bfd_get_64 (opd->owner, buf); | |
25f53a85 | 10417 | r2off -= elf_gp (info->output_bfd); |
aa374f67 AM |
10418 | } |
10419 | r2off -= htab->stub_group[stub_entry->id_sec->id].toc_off; | |
10420 | return r2off; | |
10421 | } | |
10422 | ||
b34976b6 | 10423 | static bfd_boolean |
4ce794b7 | 10424 | ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg) |
5d1634d7 | 10425 | { |
721956f4 AM |
10426 | struct ppc_stub_hash_entry *stub_entry; |
10427 | struct ppc_branch_hash_entry *br_entry; | |
5d1634d7 AM |
10428 | struct bfd_link_info *info; |
10429 | struct ppc_link_hash_table *htab; | |
721956f4 AM |
10430 | bfd_byte *loc; |
10431 | bfd_byte *p; | |
ee75fd95 | 10432 | bfd_vma dest, off; |
721956f4 | 10433 | int size; |
176a0d42 | 10434 | Elf_Internal_Rela *r; |
e054468f | 10435 | asection *plt; |
5d1634d7 | 10436 | |
721956f4 AM |
10437 | /* Massage our args to the form they really have. */ |
10438 | stub_entry = (struct ppc_stub_hash_entry *) gen_entry; | |
4ce794b7 | 10439 | info = in_arg; |
5d1634d7 | 10440 | |
5d1634d7 | 10441 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
10442 | if (htab == NULL) |
10443 | return FALSE; | |
5d1634d7 | 10444 | |
721956f4 | 10445 | /* Make a note of the offset within the stubs for this entry. */ |
eea6121a | 10446 | stub_entry->stub_offset = stub_entry->stub_sec->size; |
97b639ba | 10447 | loc = stub_entry->stub_sec->contents + stub_entry->stub_offset; |
721956f4 | 10448 | |
4ce794b7 | 10449 | htab->stub_count[stub_entry->stub_type - 1] += 1; |
721956f4 | 10450 | switch (stub_entry->stub_type) |
5d1634d7 | 10451 | { |
721956f4 | 10452 | case ppc_stub_long_branch: |
ad8e1ba5 | 10453 | case ppc_stub_long_branch_r2off: |
721956f4 | 10454 | /* Branches are relative. This is where we are going to. */ |
6911b7dc AM |
10455 | dest = (stub_entry->target_value |
10456 | + stub_entry->target_section->output_offset | |
10457 | + stub_entry->target_section->output_section->vma); | |
10458 | dest += PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other); | |
10459 | off = dest; | |
5d1634d7 | 10460 | |
721956f4 AM |
10461 | /* And this is where we are coming from. */ |
10462 | off -= (stub_entry->stub_offset | |
97b639ba AM |
10463 | + stub_entry->stub_sec->output_offset |
10464 | + stub_entry->stub_sec->output_section->vma); | |
e86ce104 | 10465 | |
ac2df442 AM |
10466 | size = 4; |
10467 | if (stub_entry->stub_type == ppc_stub_long_branch_r2off) | |
ad8e1ba5 | 10468 | { |
25f53a85 | 10469 | bfd_vma r2off = get_r2off (info, stub_entry); |
ad8e1ba5 | 10470 | |
aa374f67 AM |
10471 | if (r2off == 0) |
10472 | { | |
10473 | htab->stub_error = TRUE; | |
10474 | return FALSE; | |
10475 | } | |
e7d1c40c | 10476 | bfd_put_32 (htab->params->stub_bfd, STD_R2_0R1 + STK_TOC (htab), loc); |
ad8e1ba5 | 10477 | loc += 4; |
ac2df442 AM |
10478 | size = 12; |
10479 | if (PPC_HA (r2off) != 0) | |
10480 | { | |
10481 | size = 16; | |
e7d1c40c AM |
10482 | bfd_put_32 (htab->params->stub_bfd, |
10483 | ADDIS_R2_R2 | PPC_HA (r2off), loc); | |
ac2df442 AM |
10484 | loc += 4; |
10485 | } | |
e7d1c40c | 10486 | bfd_put_32 (htab->params->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc); |
ad8e1ba5 | 10487 | loc += 4; |
ac2df442 | 10488 | off -= size - 4; |
ad8e1ba5 | 10489 | } |
e7d1c40c | 10490 | bfd_put_32 (htab->params->stub_bfd, B_DOT | (off & 0x3fffffc), loc); |
ad8e1ba5 | 10491 | |
5c3dead3 AM |
10492 | if (off + (1 << 25) >= (bfd_vma) (1 << 26)) |
10493 | { | |
bc30df16 AM |
10494 | info->callbacks->einfo |
10495 | (_("%P: long branch stub `%s' offset overflow\n"), | |
10496 | stub_entry->root.string); | |
5c3dead3 AM |
10497 | htab->stub_error = TRUE; |
10498 | return FALSE; | |
10499 | } | |
ee75fd95 AM |
10500 | |
10501 | if (info->emitrelocations) | |
10502 | { | |
176a0d42 AM |
10503 | r = get_relocs (stub_entry->stub_sec, 1); |
10504 | if (r == NULL) | |
10505 | return FALSE; | |
ee75fd95 AM |
10506 | r->r_offset = loc - stub_entry->stub_sec->contents; |
10507 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL24); | |
10508 | r->r_addend = dest; | |
10509 | if (stub_entry->h != NULL) | |
10510 | { | |
10511 | struct elf_link_hash_entry **hashes; | |
10512 | unsigned long symndx; | |
10513 | struct ppc_link_hash_entry *h; | |
10514 | ||
e7d1c40c | 10515 | hashes = elf_sym_hashes (htab->params->stub_bfd); |
ee75fd95 AM |
10516 | if (hashes == NULL) |
10517 | { | |
10518 | bfd_size_type hsize; | |
10519 | ||
10520 | hsize = (htab->stub_globals + 1) * sizeof (*hashes); | |
e7d1c40c | 10521 | hashes = bfd_zalloc (htab->params->stub_bfd, hsize); |
ee75fd95 AM |
10522 | if (hashes == NULL) |
10523 | return FALSE; | |
e7d1c40c | 10524 | elf_sym_hashes (htab->params->stub_bfd) = hashes; |
ee75fd95 AM |
10525 | htab->stub_globals = 1; |
10526 | } | |
10527 | symndx = htab->stub_globals++; | |
10528 | h = stub_entry->h; | |
10529 | hashes[symndx] = &h->elf; | |
10530 | r->r_info = ELF64_R_INFO (symndx, R_PPC64_REL24); | |
10531 | if (h->oh != NULL && h->oh->is_func) | |
b31867b6 | 10532 | h = ppc_follow_link (h->oh); |
ee75fd95 AM |
10533 | if (h->elf.root.u.def.section != stub_entry->target_section) |
10534 | /* H is an opd symbol. The addend must be zero. */ | |
10535 | r->r_addend = 0; | |
10536 | else | |
10537 | { | |
10538 | off = (h->elf.root.u.def.value | |
10539 | + h->elf.root.u.def.section->output_offset | |
10540 | + h->elf.root.u.def.section->output_section->vma); | |
10541 | r->r_addend -= off; | |
10542 | } | |
10543 | } | |
10544 | } | |
721956f4 | 10545 | break; |
e86ce104 | 10546 | |
721956f4 | 10547 | case ppc_stub_plt_branch: |
ad8e1ba5 | 10548 | case ppc_stub_plt_branch_r2off: |
721956f4 AM |
10549 | br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table, |
10550 | stub_entry->root.string + 9, | |
b34976b6 | 10551 | FALSE, FALSE); |
721956f4 AM |
10552 | if (br_entry == NULL) |
10553 | { | |
8de848d8 | 10554 | info->callbacks->einfo (_("%P: can't find branch stub `%s'\n"), |
25f53a85 | 10555 | stub_entry->root.string); |
b34976b6 AM |
10556 | htab->stub_error = TRUE; |
10557 | return FALSE; | |
721956f4 AM |
10558 | } |
10559 | ||
176a0d42 AM |
10560 | dest = (stub_entry->target_value |
10561 | + stub_entry->target_section->output_offset | |
10562 | + stub_entry->target_section->output_section->vma); | |
6911b7dc AM |
10563 | if (stub_entry->stub_type != ppc_stub_plt_branch_r2off) |
10564 | dest += PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other); | |
721956f4 | 10565 | |
176a0d42 | 10566 | bfd_put_64 (htab->brlt->owner, dest, |
4ce794b7 | 10567 | htab->brlt->contents + br_entry->offset); |
721956f4 | 10568 | |
f94498ff | 10569 | if (br_entry->iter == htab->stub_iteration) |
721956f4 | 10570 | { |
f94498ff | 10571 | br_entry->iter = 0; |
84f5d08e | 10572 | |
f94498ff | 10573 | if (htab->relbrlt != NULL) |
84f5d08e | 10574 | { |
f94498ff AM |
10575 | /* Create a reloc for the branch lookup table entry. */ |
10576 | Elf_Internal_Rela rela; | |
10577 | bfd_byte *rl; | |
10578 | ||
10579 | rela.r_offset = (br_entry->offset | |
10580 | + htab->brlt->output_offset | |
10581 | + htab->brlt->output_section->vma); | |
10582 | rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
176a0d42 | 10583 | rela.r_addend = dest; |
f94498ff AM |
10584 | |
10585 | rl = htab->relbrlt->contents; | |
10586 | rl += (htab->relbrlt->reloc_count++ | |
10587 | * sizeof (Elf64_External_Rela)); | |
10588 | bfd_elf64_swap_reloca_out (htab->relbrlt->owner, &rela, rl); | |
10589 | } | |
10590 | else if (info->emitrelocations) | |
10591 | { | |
176a0d42 AM |
10592 | r = get_relocs (htab->brlt, 1); |
10593 | if (r == NULL) | |
10594 | return FALSE; | |
10595 | /* brlt, being SEC_LINKER_CREATED does not go through the | |
10596 | normal reloc processing. Symbols and offsets are not | |
10597 | translated from input file to output file form, so | |
10598 | set up the offset per the output file. */ | |
f94498ff AM |
10599 | r->r_offset = (br_entry->offset |
10600 | + htab->brlt->output_offset | |
10601 | + htab->brlt->output_section->vma); | |
10602 | r->r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
176a0d42 | 10603 | r->r_addend = dest; |
84f5d08e | 10604 | } |
84f5d08e | 10605 | } |
721956f4 | 10606 | |
176a0d42 AM |
10607 | dest = (br_entry->offset |
10608 | + htab->brlt->output_offset | |
10609 | + htab->brlt->output_section->vma); | |
10610 | ||
10611 | off = (dest | |
4ce794b7 | 10612 | - elf_gp (htab->brlt->output_section->owner) |
ad8e1ba5 | 10613 | - htab->stub_group[stub_entry->id_sec->id].toc_off); |
721956f4 | 10614 | |
ad8e1ba5 | 10615 | if (off + 0x80008000 > 0xffffffff || (off & 7) != 0) |
5d1634d7 | 10616 | { |
25f53a85 | 10617 | info->callbacks->einfo |
bc30df16 | 10618 | (_("%P: linkage table error against `%T'\n"), |
721956f4 | 10619 | stub_entry->root.string); |
5d1634d7 | 10620 | bfd_set_error (bfd_error_bad_value); |
b34976b6 AM |
10621 | htab->stub_error = TRUE; |
10622 | return FALSE; | |
5d1634d7 | 10623 | } |
41bd81ab | 10624 | |
176a0d42 AM |
10625 | if (info->emitrelocations) |
10626 | { | |
10627 | r = get_relocs (stub_entry->stub_sec, 1 + (PPC_HA (off) != 0)); | |
10628 | if (r == NULL) | |
10629 | return FALSE; | |
10630 | r[0].r_offset = loc - stub_entry->stub_sec->contents; | |
7cfbafbc AM |
10631 | if (bfd_big_endian (info->output_bfd)) |
10632 | r[0].r_offset += 2; | |
00f412ee | 10633 | if (stub_entry->stub_type == ppc_stub_plt_branch_r2off) |
176a0d42 AM |
10634 | r[0].r_offset += 4; |
10635 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); | |
10636 | r[0].r_addend = dest; | |
10637 | if (PPC_HA (off) != 0) | |
10638 | { | |
10639 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA); | |
10640 | r[1].r_offset = r[0].r_offset + 4; | |
10641 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); | |
10642 | r[1].r_addend = r[0].r_addend; | |
10643 | } | |
10644 | } | |
10645 | ||
00f412ee | 10646 | if (stub_entry->stub_type != ppc_stub_plt_branch_r2off) |
ad8e1ba5 | 10647 | { |
176a0d42 | 10648 | if (PPC_HA (off) != 0) |
ac2df442 AM |
10649 | { |
10650 | size = 16; | |
e7d1c40c AM |
10651 | bfd_put_32 (htab->params->stub_bfd, |
10652 | ADDIS_R11_R2 | PPC_HA (off), loc); | |
ac2df442 | 10653 | loc += 4; |
e7d1c40c AM |
10654 | bfd_put_32 (htab->params->stub_bfd, |
10655 | LD_R12_0R11 | PPC_LO (off), loc); | |
ac2df442 AM |
10656 | } |
10657 | else | |
10658 | { | |
10659 | size = 12; | |
e7d1c40c AM |
10660 | bfd_put_32 (htab->params->stub_bfd, |
10661 | LD_R12_0R2 | PPC_LO (off), loc); | |
ac2df442 | 10662 | } |
ad8e1ba5 AM |
10663 | } |
10664 | else | |
10665 | { | |
25f53a85 | 10666 | bfd_vma r2off = get_r2off (info, stub_entry); |
aa374f67 | 10667 | |
00f412ee | 10668 | if (r2off == 0 && htab->opd_abi) |
aa374f67 AM |
10669 | { |
10670 | htab->stub_error = TRUE; | |
10671 | return FALSE; | |
10672 | } | |
ad8e1ba5 | 10673 | |
e7d1c40c | 10674 | bfd_put_32 (htab->params->stub_bfd, STD_R2_0R1 + STK_TOC (htab), loc); |
ad8e1ba5 | 10675 | loc += 4; |
00f412ee | 10676 | size = 16; |
176a0d42 | 10677 | if (PPC_HA (off) != 0) |
ac2df442 AM |
10678 | { |
10679 | size += 4; | |
e7d1c40c AM |
10680 | bfd_put_32 (htab->params->stub_bfd, |
10681 | ADDIS_R11_R2 | PPC_HA (off), loc); | |
ac2df442 | 10682 | loc += 4; |
e7d1c40c AM |
10683 | bfd_put_32 (htab->params->stub_bfd, |
10684 | LD_R12_0R11 | PPC_LO (off), loc); | |
ac2df442 AM |
10685 | } |
10686 | else | |
e7d1c40c | 10687 | bfd_put_32 (htab->params->stub_bfd, LD_R12_0R2 | PPC_LO (off), loc); |
ac2df442 AM |
10688 | |
10689 | if (PPC_HA (r2off) != 0) | |
10690 | { | |
10691 | size += 4; | |
00f412ee | 10692 | loc += 4; |
e7d1c40c AM |
10693 | bfd_put_32 (htab->params->stub_bfd, |
10694 | ADDIS_R2_R2 | PPC_HA (r2off), loc); | |
00f412ee AM |
10695 | } |
10696 | if (PPC_LO (r2off) != 0) | |
10697 | { | |
10698 | size += 4; | |
ac2df442 | 10699 | loc += 4; |
e7d1c40c AM |
10700 | bfd_put_32 (htab->params->stub_bfd, |
10701 | ADDI_R2_R2 | PPC_LO (r2off), loc); | |
ac2df442 | 10702 | } |
ad8e1ba5 AM |
10703 | } |
10704 | loc += 4; | |
e7d1c40c | 10705 | bfd_put_32 (htab->params->stub_bfd, MTCTR_R12, loc); |
ad8e1ba5 | 10706 | loc += 4; |
e7d1c40c | 10707 | bfd_put_32 (htab->params->stub_bfd, BCTR, loc); |
721956f4 | 10708 | break; |
5d1634d7 | 10709 | |
721956f4 | 10710 | case ppc_stub_plt_call: |
794e51c0 | 10711 | case ppc_stub_plt_call_r2save: |
e054468f | 10712 | if (stub_entry->h != NULL |
b31867b6 AM |
10713 | && stub_entry->h->is_func_descriptor |
10714 | && stub_entry->h->oh != NULL) | |
c862ae31 | 10715 | { |
b31867b6 AM |
10716 | struct ppc_link_hash_entry *fh = ppc_follow_link (stub_entry->h->oh); |
10717 | ||
10718 | /* If the old-ABI "dot-symbol" is undefined make it weak so | |
10719 | we don't get a link error from RELOC_FOR_GLOBAL_SYMBOL. | |
10720 | FIXME: We used to define the symbol on one of the call | |
10721 | stubs instead, which is why we test symbol section id | |
10722 | against htab->top_id in various places. Likely all | |
10723 | these checks could now disappear. */ | |
10724 | if (fh->elf.root.type == bfd_link_hash_undefined) | |
10725 | fh->elf.root.type = bfd_link_hash_undefweak; | |
9507a174 AM |
10726 | /* Stop undo_symbol_twiddle changing it back to undefined. */ |
10727 | fh->was_undefined = 0; | |
c862ae31 AM |
10728 | } |
10729 | ||
721956f4 | 10730 | /* Now build the stub. */ |
e054468f | 10731 | dest = stub_entry->plt_ent->plt.offset & ~1; |
176a0d42 | 10732 | if (dest >= (bfd_vma) -2) |
721956f4 AM |
10733 | abort (); |
10734 | ||
33e44f2e | 10735 | plt = htab->elf.splt; |
25f23106 AM |
10736 | if (!htab->elf.dynamic_sections_created |
10737 | || stub_entry->h == NULL | |
10738 | || stub_entry->h->elf.dynindx == -1) | |
33e44f2e | 10739 | plt = htab->elf.iplt; |
e054468f AM |
10740 | |
10741 | dest += plt->output_offset + plt->output_section->vma; | |
10742 | ||
10743 | if (stub_entry->h == NULL | |
10744 | && (stub_entry->plt_ent->plt.offset & 1) == 0) | |
10745 | { | |
10746 | Elf_Internal_Rela rela; | |
10747 | bfd_byte *rl; | |
10748 | ||
10749 | rela.r_offset = dest; | |
ee67d69a AM |
10750 | if (htab->opd_abi) |
10751 | rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL); | |
10752 | else | |
10753 | rela.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE); | |
e054468f AM |
10754 | rela.r_addend = (stub_entry->target_value |
10755 | + stub_entry->target_section->output_offset | |
10756 | + stub_entry->target_section->output_section->vma); | |
10757 | ||
33e44f2e AM |
10758 | rl = (htab->elf.irelplt->contents |
10759 | + (htab->elf.irelplt->reloc_count++ | |
25f23106 AM |
10760 | * sizeof (Elf64_External_Rela))); |
10761 | bfd_elf64_swap_reloca_out (info->output_bfd, &rela, rl); | |
e054468f AM |
10762 | stub_entry->plt_ent->plt.offset |= 1; |
10763 | } | |
176a0d42 AM |
10764 | |
10765 | off = (dest | |
e054468f | 10766 | - elf_gp (plt->output_section->owner) |
176a0d42 | 10767 | - htab->stub_group[stub_entry->id_sec->id].toc_off); |
721956f4 | 10768 | |
ad8e1ba5 | 10769 | if (off + 0x80008000 > 0xffffffff || (off & 7) != 0) |
721956f4 | 10770 | { |
25f53a85 | 10771 | info->callbacks->einfo |
bc30df16 | 10772 | (_("%P: linkage table error against `%T'\n"), |
e054468f AM |
10773 | stub_entry->h != NULL |
10774 | ? stub_entry->h->elf.root.root.string | |
10775 | : "<local sym>"); | |
721956f4 | 10776 | bfd_set_error (bfd_error_bad_value); |
b34976b6 AM |
10777 | htab->stub_error = TRUE; |
10778 | return FALSE; | |
721956f4 AM |
10779 | } |
10780 | ||
e7d1c40c | 10781 | if (htab->params->plt_stub_align != 0) |
794e51c0 AM |
10782 | { |
10783 | unsigned pad = plt_stub_pad (htab, stub_entry, off); | |
10784 | ||
10785 | stub_entry->stub_sec->size += pad; | |
10786 | stub_entry->stub_offset = stub_entry->stub_sec->size; | |
10787 | loc += pad; | |
10788 | } | |
10789 | ||
176a0d42 AM |
10790 | r = NULL; |
10791 | if (info->emitrelocations) | |
10792 | { | |
10793 | r = get_relocs (stub_entry->stub_sec, | |
3ba720c7 AM |
10794 | ((PPC_HA (off) != 0) |
10795 | + (htab->opd_abi | |
e7d1c40c | 10796 | ? 2 + (htab->params->plt_static_chain |
3ba720c7 AM |
10797 | && PPC_HA (off + 16) == PPC_HA (off)) |
10798 | : 1))); | |
176a0d42 AM |
10799 | if (r == NULL) |
10800 | return FALSE; | |
10801 | r[0].r_offset = loc - stub_entry->stub_sec->contents; | |
7cfbafbc AM |
10802 | if (bfd_big_endian (info->output_bfd)) |
10803 | r[0].r_offset += 2; | |
176a0d42 AM |
10804 | r[0].r_addend = dest; |
10805 | } | |
a7f2871e AM |
10806 | if (stub_entry->h != NULL |
10807 | && (stub_entry->h == htab->tls_get_addr_fd | |
10808 | || stub_entry->h == htab->tls_get_addr) | |
e7d1c40c | 10809 | && !htab->params->no_tls_get_addr_opt) |
794e51c0 | 10810 | p = build_tls_get_addr_stub (htab, stub_entry, loc, off, r); |
a7f2871e | 10811 | else |
794e51c0 | 10812 | p = build_plt_stub (htab, stub_entry, loc, off, r); |
721956f4 AM |
10813 | size = p - loc; |
10814 | break; | |
10815 | ||
10816 | default: | |
10817 | BFD_FAIL (); | |
b34976b6 | 10818 | return FALSE; |
721956f4 AM |
10819 | } |
10820 | ||
eea6121a | 10821 | stub_entry->stub_sec->size += size; |
97b639ba | 10822 | |
e7d1c40c | 10823 | if (htab->params->emit_stub_syms) |
97b639ba AM |
10824 | { |
10825 | struct elf_link_hash_entry *h; | |
ee75fd95 AM |
10826 | size_t len1, len2; |
10827 | char *name; | |
10828 | const char *const stub_str[] = { "long_branch", | |
10829 | "long_branch_r2off", | |
10830 | "plt_branch", | |
10831 | "plt_branch_r2off", | |
794e51c0 | 10832 | "plt_call", |
ee75fd95 AM |
10833 | "plt_call" }; |
10834 | ||
10835 | len1 = strlen (stub_str[stub_entry->stub_type - 1]); | |
10836 | len2 = strlen (stub_entry->root.string); | |
10837 | name = bfd_malloc (len1 + len2 + 2); | |
10838 | if (name == NULL) | |
10839 | return FALSE; | |
10840 | memcpy (name, stub_entry->root.string, 9); | |
10841 | memcpy (name + 9, stub_str[stub_entry->stub_type - 1], len1); | |
10842 | memcpy (name + len1 + 9, stub_entry->root.string + 8, len2 - 8 + 1); | |
10843 | h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE); | |
97b639ba AM |
10844 | if (h == NULL) |
10845 | return FALSE; | |
10846 | if (h->root.type == bfd_link_hash_new) | |
10847 | { | |
10848 | h->root.type = bfd_link_hash_defined; | |
10849 | h->root.u.def.section = stub_entry->stub_sec; | |
10850 | h->root.u.def.value = stub_entry->stub_offset; | |
f5385ebf AM |
10851 | h->ref_regular = 1; |
10852 | h->def_regular = 1; | |
10853 | h->ref_regular_nonweak = 1; | |
10854 | h->forced_local = 1; | |
10855 | h->non_elf = 0; | |
97b639ba AM |
10856 | } |
10857 | } | |
10858 | ||
b34976b6 | 10859 | return TRUE; |
721956f4 AM |
10860 | } |
10861 | ||
10862 | /* As above, but don't actually build the stub. Just bump offset so | |
10863 | we know stub section sizes, and select plt_branch stubs where | |
10864 | long_branch stubs won't do. */ | |
10865 | ||
b34976b6 | 10866 | static bfd_boolean |
4ce794b7 | 10867 | ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg) |
721956f4 AM |
10868 | { |
10869 | struct ppc_stub_hash_entry *stub_entry; | |
63bc6f6c | 10870 | struct bfd_link_info *info; |
721956f4 AM |
10871 | struct ppc_link_hash_table *htab; |
10872 | bfd_vma off; | |
10873 | int size; | |
10874 | ||
10875 | /* Massage our args to the form they really have. */ | |
10876 | stub_entry = (struct ppc_stub_hash_entry *) gen_entry; | |
63bc6f6c AM |
10877 | info = in_arg; |
10878 | ||
10879 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
10880 | if (htab == NULL) |
10881 | return FALSE; | |
721956f4 | 10882 | |
794e51c0 AM |
10883 | if (stub_entry->stub_type == ppc_stub_plt_call |
10884 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
721956f4 | 10885 | { |
e054468f AM |
10886 | asection *plt; |
10887 | off = stub_entry->plt_ent->plt.offset & ~(bfd_vma) 1; | |
58ac9f71 | 10888 | if (off >= (bfd_vma) -2) |
411e1bfb | 10889 | abort (); |
33e44f2e | 10890 | plt = htab->elf.splt; |
25f23106 AM |
10891 | if (!htab->elf.dynamic_sections_created |
10892 | || stub_entry->h == NULL | |
10893 | || stub_entry->h->elf.dynindx == -1) | |
33e44f2e | 10894 | plt = htab->elf.iplt; |
e054468f AM |
10895 | off += (plt->output_offset |
10896 | + plt->output_section->vma | |
10897 | - elf_gp (plt->output_section->owner) | |
ad8e1ba5 | 10898 | - htab->stub_group[stub_entry->id_sec->id].toc_off); |
721956f4 | 10899 | |
794e51c0 | 10900 | size = plt_stub_size (htab, stub_entry, off); |
e7d1c40c | 10901 | if (htab->params->plt_stub_align) |
794e51c0 | 10902 | size += plt_stub_pad (htab, stub_entry, off); |
176a0d42 AM |
10903 | if (info->emitrelocations) |
10904 | { | |
10905 | stub_entry->stub_sec->reloc_count | |
b9e5796b AM |
10906 | += ((PPC_HA (off) != 0) |
10907 | + (htab->opd_abi | |
e7d1c40c | 10908 | ? 2 + (htab->params->plt_static_chain |
b9e5796b AM |
10909 | && PPC_HA (off + 16) == PPC_HA (off)) |
10910 | : 1)); | |
176a0d42 AM |
10911 | stub_entry->stub_sec->flags |= SEC_RELOC; |
10912 | } | |
721956f4 AM |
10913 | } |
10914 | else | |
10915 | { | |
ad8e1ba5 AM |
10916 | /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off |
10917 | variants. */ | |
ac2df442 | 10918 | bfd_vma r2off = 0; |
6911b7dc | 10919 | bfd_vma local_off = 0; |
ac2df442 | 10920 | |
721956f4 AM |
10921 | off = (stub_entry->target_value |
10922 | + stub_entry->target_section->output_offset | |
10923 | + stub_entry->target_section->output_section->vma); | |
eea6121a | 10924 | off -= (stub_entry->stub_sec->size |
721956f4 AM |
10925 | + stub_entry->stub_sec->output_offset |
10926 | + stub_entry->stub_sec->output_section->vma); | |
10927 | ||
ad8e1ba5 AM |
10928 | /* Reset the stub type from the plt variant in case we now |
10929 | can reach with a shorter stub. */ | |
10930 | if (stub_entry->stub_type >= ppc_stub_plt_branch) | |
10931 | stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch; | |
10932 | ||
10933 | size = 4; | |
10934 | if (stub_entry->stub_type == ppc_stub_long_branch_r2off) | |
10935 | { | |
25f53a85 | 10936 | r2off = get_r2off (info, stub_entry); |
b9e5796b | 10937 | if (r2off == 0 && htab->opd_abi) |
aa374f67 AM |
10938 | { |
10939 | htab->stub_error = TRUE; | |
10940 | return FALSE; | |
10941 | } | |
ac2df442 AM |
10942 | size = 12; |
10943 | if (PPC_HA (r2off) != 0) | |
10944 | size = 16; | |
10945 | off -= size - 4; | |
ad8e1ba5 AM |
10946 | } |
10947 | ||
6911b7dc AM |
10948 | local_off = PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other); |
10949 | ||
b9e5796b AM |
10950 | /* If the branch offset if too big, use a ppc_stub_plt_branch. |
10951 | Do the same for -R objects without function descriptors. */ | |
10952 | if (off + (1 << 25) >= (bfd_vma) (1 << 26) - local_off | |
10953 | || (stub_entry->stub_type == ppc_stub_long_branch_r2off | |
10954 | && r2off == 0)) | |
721956f4 AM |
10955 | { |
10956 | struct ppc_branch_hash_entry *br_entry; | |
10957 | ||
10958 | br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table, | |
10959 | stub_entry->root.string + 9, | |
b34976b6 | 10960 | TRUE, FALSE); |
721956f4 AM |
10961 | if (br_entry == NULL) |
10962 | { | |
8de848d8 | 10963 | info->callbacks->einfo (_("%P: can't build branch stub `%s'\n"), |
25f53a85 | 10964 | stub_entry->root.string); |
b34976b6 AM |
10965 | htab->stub_error = TRUE; |
10966 | return FALSE; | |
721956f4 AM |
10967 | } |
10968 | ||
10969 | if (br_entry->iter != htab->stub_iteration) | |
10970 | { | |
10971 | br_entry->iter = htab->stub_iteration; | |
eea6121a AM |
10972 | br_entry->offset = htab->brlt->size; |
10973 | htab->brlt->size += 8; | |
63bc6f6c | 10974 | |
ee75fd95 | 10975 | if (htab->relbrlt != NULL) |
eea6121a | 10976 | htab->relbrlt->size += sizeof (Elf64_External_Rela); |
84f5d08e AM |
10977 | else if (info->emitrelocations) |
10978 | { | |
10979 | htab->brlt->reloc_count += 1; | |
10980 | htab->brlt->flags |= SEC_RELOC; | |
10981 | } | |
721956f4 | 10982 | } |
ad8e1ba5 AM |
10983 | |
10984 | stub_entry->stub_type += ppc_stub_plt_branch - ppc_stub_long_branch; | |
ac2df442 AM |
10985 | off = (br_entry->offset |
10986 | + htab->brlt->output_offset | |
10987 | + htab->brlt->output_section->vma | |
10988 | - elf_gp (htab->brlt->output_section->owner) | |
10989 | - htab->stub_group[stub_entry->id_sec->id].toc_off); | |
10990 | ||
176a0d42 AM |
10991 | if (info->emitrelocations) |
10992 | { | |
10993 | stub_entry->stub_sec->reloc_count += 1 + (PPC_HA (off) != 0); | |
10994 | stub_entry->stub_sec->flags |= SEC_RELOC; | |
10995 | } | |
10996 | ||
00f412ee | 10997 | if (stub_entry->stub_type != ppc_stub_plt_branch_r2off) |
ac2df442 AM |
10998 | { |
10999 | size = 12; | |
176a0d42 | 11000 | if (PPC_HA (off) != 0) |
ac2df442 AM |
11001 | size = 16; |
11002 | } | |
11003 | else | |
11004 | { | |
00f412ee | 11005 | size = 16; |
176a0d42 | 11006 | if (PPC_HA (off) != 0) |
ac2df442 AM |
11007 | size += 4; |
11008 | ||
11009 | if (PPC_HA (r2off) != 0) | |
11010 | size += 4; | |
00f412ee AM |
11011 | if (PPC_LO (r2off) != 0) |
11012 | size += 4; | |
ac2df442 | 11013 | } |
721956f4 | 11014 | } |
84f5d08e AM |
11015 | else if (info->emitrelocations) |
11016 | { | |
11017 | stub_entry->stub_sec->reloc_count += 1; | |
11018 | stub_entry->stub_sec->flags |= SEC_RELOC; | |
11019 | } | |
721956f4 AM |
11020 | } |
11021 | ||
eea6121a | 11022 | stub_entry->stub_sec->size += size; |
b34976b6 | 11023 | return TRUE; |
721956f4 AM |
11024 | } |
11025 | ||
11026 | /* Set up various things so that we can make a list of input sections | |
11027 | for each output section included in the link. Returns -1 on error, | |
cedb70c5 | 11028 | 0 when no stubs will be needed, and 1 on success. */ |
721956f4 AM |
11029 | |
11030 | int | |
e7d1c40c | 11031 | ppc64_elf_setup_section_lists (struct bfd_link_info *info) |
721956f4 AM |
11032 | { |
11033 | bfd *input_bfd; | |
734b6cf9 | 11034 | int top_id, top_index, id; |
721956f4 | 11035 | asection *section; |
734b6cf9 | 11036 | asection **input_list; |
721956f4 AM |
11037 | bfd_size_type amt; |
11038 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
11039 | ||
4dfe6ac6 NC |
11040 | if (htab == NULL) |
11041 | return -1; | |
4c52953f | 11042 | |
1e2f5b6e | 11043 | /* Find the top input section id. */ |
3d6f9012 | 11044 | for (input_bfd = info->input_bfds, top_id = 3; |
721956f4 AM |
11045 | input_bfd != NULL; |
11046 | input_bfd = input_bfd->link_next) | |
11047 | { | |
721956f4 AM |
11048 | for (section = input_bfd->sections; |
11049 | section != NULL; | |
11050 | section = section->next) | |
11051 | { | |
11052 | if (top_id < section->id) | |
11053 | top_id = section->id; | |
11054 | } | |
11055 | } | |
721956f4 | 11056 | |
8f3bab57 | 11057 | htab->top_id = top_id; |
721956f4 | 11058 | amt = sizeof (struct map_stub) * (top_id + 1); |
4ce794b7 | 11059 | htab->stub_group = bfd_zmalloc (amt); |
721956f4 AM |
11060 | if (htab->stub_group == NULL) |
11061 | return -1; | |
11062 | ||
3d6f9012 AM |
11063 | /* Set toc_off for com, und, abs and ind sections. */ |
11064 | for (id = 0; id < 3; id++) | |
11065 | htab->stub_group[id].toc_off = TOC_BASE_OFF; | |
721956f4 | 11066 | |
734b6cf9 AM |
11067 | /* We can't use output_bfd->section_count here to find the top output |
11068 | section index as some sections may have been removed, and | |
8423293d | 11069 | strip_excluded_output_sections doesn't renumber the indices. */ |
927be08e | 11070 | for (section = info->output_bfd->sections, top_index = 0; |
734b6cf9 AM |
11071 | section != NULL; |
11072 | section = section->next) | |
11073 | { | |
11074 | if (top_index < section->index) | |
11075 | top_index = section->index; | |
11076 | } | |
11077 | ||
11078 | htab->top_index = top_index; | |
11079 | amt = sizeof (asection *) * (top_index + 1); | |
4ce794b7 | 11080 | input_list = bfd_zmalloc (amt); |
734b6cf9 AM |
11081 | htab->input_list = input_list; |
11082 | if (input_list == NULL) | |
11083 | return -1; | |
11084 | ||
721956f4 AM |
11085 | return 1; |
11086 | } | |
11087 | ||
927be08e AM |
11088 | /* Set up for first pass at multitoc partitioning. */ |
11089 | ||
11090 | void | |
11091 | ppc64_elf_start_multitoc_partition (struct bfd_link_info *info) | |
11092 | { | |
11093 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
11094 | ||
1c865ab2 | 11095 | htab->toc_curr = ppc64_elf_set_toc (info, info->output_bfd); |
927be08e AM |
11096 | htab->toc_bfd = NULL; |
11097 | htab->toc_first_sec = NULL; | |
11098 | } | |
11099 | ||
e717da7e AM |
11100 | /* The linker repeatedly calls this function for each TOC input section |
11101 | and linker generated GOT section. Group input bfds such that the toc | |
927be08e | 11102 | within a group is less than 64k in size. */ |
ad8e1ba5 | 11103 | |
927be08e | 11104 | bfd_boolean |
4ce794b7 | 11105 | ppc64_elf_next_toc_section (struct bfd_link_info *info, asection *isec) |
ad8e1ba5 AM |
11106 | { |
11107 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
d77c8a4b | 11108 | bfd_vma addr, off, limit; |
ad8e1ba5 | 11109 | |
4dfe6ac6 NC |
11110 | if (htab == NULL) |
11111 | return FALSE; | |
11112 | ||
927be08e | 11113 | if (!htab->second_toc_pass) |
4c52953f | 11114 | { |
927be08e | 11115 | /* Keep track of the first .toc or .got section for this input bfd. */ |
a4fd3de5 AM |
11116 | bfd_boolean new_bfd = htab->toc_bfd != isec->owner; |
11117 | ||
11118 | if (new_bfd) | |
bf102f86 AM |
11119 | { |
11120 | htab->toc_bfd = isec->owner; | |
11121 | htab->toc_first_sec = isec; | |
11122 | } | |
927be08e | 11123 | |
bf102f86 AM |
11124 | addr = isec->output_offset + isec->output_section->vma; |
11125 | off = addr - htab->toc_curr; | |
d77c8a4b AM |
11126 | limit = 0x80008000; |
11127 | if (ppc64_elf_tdata (isec->owner)->has_small_toc_reloc) | |
11128 | limit = 0x10000; | |
11129 | if (off + isec->size > limit) | |
bf102f86 AM |
11130 | { |
11131 | addr = (htab->toc_first_sec->output_offset | |
11132 | + htab->toc_first_sec->output_section->vma); | |
11133 | htab->toc_curr = addr; | |
11134 | } | |
99877b66 | 11135 | |
927be08e AM |
11136 | /* toc_curr is the base address of this toc group. Set elf_gp |
11137 | for the input section to be the offset relative to the | |
11138 | output toc base plus 0x8000. Making the input elf_gp an | |
11139 | offset allows us to move the toc as a whole without | |
11140 | recalculating input elf_gp. */ | |
11141 | off = htab->toc_curr - elf_gp (isec->output_section->owner); | |
11142 | off += TOC_BASE_OFF; | |
11143 | ||
11144 | /* Die if someone uses a linker script that doesn't keep input | |
11145 | file .toc and .got together. */ | |
a4fd3de5 AM |
11146 | if (new_bfd |
11147 | && elf_gp (isec->owner) != 0 | |
927be08e AM |
11148 | && elf_gp (isec->owner) != off) |
11149 | return FALSE; | |
11150 | ||
11151 | elf_gp (isec->owner) = off; | |
11152 | return TRUE; | |
4c52953f | 11153 | } |
927be08e AM |
11154 | |
11155 | /* During the second pass toc_first_sec points to the start of | |
11156 | a toc group, and toc_curr is used to track the old elf_gp. | |
11157 | We use toc_bfd to ensure we only look at each bfd once. */ | |
11158 | if (htab->toc_bfd == isec->owner) | |
11159 | return TRUE; | |
11160 | htab->toc_bfd = isec->owner; | |
11161 | ||
11162 | if (htab->toc_first_sec == NULL | |
11163 | || htab->toc_curr != elf_gp (isec->owner)) | |
11164 | { | |
11165 | htab->toc_curr = elf_gp (isec->owner); | |
11166 | htab->toc_first_sec = isec; | |
11167 | } | |
11168 | addr = (htab->toc_first_sec->output_offset | |
11169 | + htab->toc_first_sec->output_section->vma); | |
11170 | off = addr - elf_gp (isec->output_section->owner) + TOC_BASE_OFF; | |
11171 | elf_gp (isec->owner) = off; | |
11172 | ||
11173 | return TRUE; | |
ad8e1ba5 AM |
11174 | } |
11175 | ||
927be08e AM |
11176 | /* Called via elf_link_hash_traverse to merge GOT entries for global |
11177 | symbol H. */ | |
11178 | ||
11179 | static bfd_boolean | |
11180 | merge_global_got (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED) | |
11181 | { | |
11182 | if (h->root.type == bfd_link_hash_indirect) | |
11183 | return TRUE; | |
11184 | ||
927be08e AM |
11185 | merge_got_entries (&h->got.glist); |
11186 | ||
11187 | return TRUE; | |
11188 | } | |
11189 | ||
11190 | /* Called via elf_link_hash_traverse to allocate GOT entries for global | |
11191 | symbol H. */ | |
11192 | ||
11193 | static bfd_boolean | |
11194 | reallocate_got (struct elf_link_hash_entry *h, void *inf) | |
11195 | { | |
11196 | struct got_entry *gent; | |
11197 | ||
11198 | if (h->root.type == bfd_link_hash_indirect) | |
11199 | return TRUE; | |
11200 | ||
927be08e AM |
11201 | for (gent = h->got.glist; gent != NULL; gent = gent->next) |
11202 | if (!gent->is_indirect) | |
11203 | allocate_got (h, (struct bfd_link_info *) inf, gent); | |
11204 | return TRUE; | |
11205 | } | |
11206 | ||
11207 | /* Called on the first multitoc pass after the last call to | |
11208 | ppc64_elf_next_toc_section. This function removes duplicate GOT | |
11209 | entries. */ | |
11210 | ||
11211 | bfd_boolean | |
11212 | ppc64_elf_layout_multitoc (struct bfd_link_info *info) | |
ad8e1ba5 AM |
11213 | { |
11214 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
927be08e AM |
11215 | struct bfd *ibfd, *ibfd2; |
11216 | bfd_boolean done_something; | |
11217 | ||
11218 | htab->multi_toc_needed = htab->toc_curr != elf_gp (info->output_bfd); | |
ad8e1ba5 | 11219 | |
7865406b AM |
11220 | if (!htab->do_multi_toc) |
11221 | return FALSE; | |
11222 | ||
d0fae19d | 11223 | /* Merge global sym got entries within a toc group. */ |
927be08e AM |
11224 | elf_link_hash_traverse (&htab->elf, merge_global_got, info); |
11225 | ||
11226 | /* And tlsld_got. */ | |
11227 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
11228 | { | |
11229 | struct got_entry *ent, *ent2; | |
11230 | ||
11231 | if (!is_ppc64_elf (ibfd)) | |
11232 | continue; | |
11233 | ||
11234 | ent = ppc64_tlsld_got (ibfd); | |
11235 | if (!ent->is_indirect | |
11236 | && ent->got.offset != (bfd_vma) -1) | |
11237 | { | |
11238 | for (ibfd2 = ibfd->link_next; ibfd2 != NULL; ibfd2 = ibfd2->link_next) | |
11239 | { | |
11240 | if (!is_ppc64_elf (ibfd2)) | |
11241 | continue; | |
11242 | ||
11243 | ent2 = ppc64_tlsld_got (ibfd2); | |
11244 | if (!ent2->is_indirect | |
11245 | && ent2->got.offset != (bfd_vma) -1 | |
11246 | && elf_gp (ibfd2) == elf_gp (ibfd)) | |
11247 | { | |
11248 | ent2->is_indirect = TRUE; | |
11249 | ent2->got.ent = ent; | |
11250 | } | |
11251 | } | |
11252 | } | |
11253 | } | |
11254 | ||
11255 | /* Zap sizes of got sections. */ | |
33e44f2e AM |
11256 | htab->elf.irelplt->rawsize = htab->elf.irelplt->size; |
11257 | htab->elf.irelplt->size -= htab->got_reli_size; | |
927be08e AM |
11258 | htab->got_reli_size = 0; |
11259 | ||
11260 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
11261 | { | |
11262 | asection *got, *relgot; | |
11263 | ||
11264 | if (!is_ppc64_elf (ibfd)) | |
11265 | continue; | |
11266 | ||
11267 | got = ppc64_elf_tdata (ibfd)->got; | |
11268 | if (got != NULL) | |
11269 | { | |
11270 | got->rawsize = got->size; | |
11271 | got->size = 0; | |
11272 | relgot = ppc64_elf_tdata (ibfd)->relgot; | |
11273 | relgot->rawsize = relgot->size; | |
11274 | relgot->size = 0; | |
11275 | } | |
11276 | } | |
11277 | ||
11278 | /* Now reallocate the got, local syms first. We don't need to | |
11279 | allocate section contents again since we never increase size. */ | |
11280 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
11281 | { | |
11282 | struct got_entry **lgot_ents; | |
11283 | struct got_entry **end_lgot_ents; | |
11284 | struct plt_entry **local_plt; | |
11285 | struct plt_entry **end_local_plt; | |
f961d9dd | 11286 | unsigned char *lgot_masks; |
927be08e AM |
11287 | bfd_size_type locsymcount; |
11288 | Elf_Internal_Shdr *symtab_hdr; | |
19e08130 | 11289 | asection *s; |
927be08e AM |
11290 | |
11291 | if (!is_ppc64_elf (ibfd)) | |
11292 | continue; | |
11293 | ||
11294 | lgot_ents = elf_local_got_ents (ibfd); | |
11295 | if (!lgot_ents) | |
11296 | continue; | |
11297 | ||
11298 | symtab_hdr = &elf_symtab_hdr (ibfd); | |
11299 | locsymcount = symtab_hdr->sh_info; | |
11300 | end_lgot_ents = lgot_ents + locsymcount; | |
11301 | local_plt = (struct plt_entry **) end_lgot_ents; | |
11302 | end_local_plt = local_plt + locsymcount; | |
f961d9dd | 11303 | lgot_masks = (unsigned char *) end_local_plt; |
927be08e | 11304 | s = ppc64_elf_tdata (ibfd)->got; |
927be08e AM |
11305 | for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks) |
11306 | { | |
11307 | struct got_entry *ent; | |
11308 | ||
11309 | for (ent = *lgot_ents; ent != NULL; ent = ent->next) | |
d0fae19d | 11310 | { |
19e08130 AM |
11311 | unsigned int ent_size = 8; |
11312 | unsigned int rel_size = sizeof (Elf64_External_Rela); | |
11313 | ||
d0fae19d AM |
11314 | ent->got.offset = s->size; |
11315 | if ((ent->tls_type & *lgot_masks & TLS_GD) != 0) | |
d0fae19d | 11316 | { |
19e08130 AM |
11317 | ent_size *= 2; |
11318 | rel_size *= 2; | |
11319 | } | |
11320 | s->size += ent_size; | |
11321 | if ((*lgot_masks & PLT_IFUNC) != 0) | |
11322 | { | |
33e44f2e | 11323 | htab->elf.irelplt->size += rel_size; |
19e08130 AM |
11324 | htab->got_reli_size += rel_size; |
11325 | } | |
11326 | else if (info->shared) | |
11327 | { | |
11328 | asection *srel = ppc64_elf_tdata (ibfd)->relgot; | |
11329 | srel->size += rel_size; | |
d0fae19d AM |
11330 | } |
11331 | } | |
927be08e AM |
11332 | } |
11333 | } | |
11334 | ||
11335 | elf_link_hash_traverse (&htab->elf, reallocate_got, info); | |
11336 | ||
11337 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
11338 | { | |
11339 | struct got_entry *ent; | |
11340 | ||
11341 | if (!is_ppc64_elf (ibfd)) | |
11342 | continue; | |
11343 | ||
11344 | ent = ppc64_tlsld_got (ibfd); | |
11345 | if (!ent->is_indirect | |
11346 | && ent->got.offset != (bfd_vma) -1) | |
11347 | { | |
11348 | asection *s = ppc64_elf_tdata (ibfd)->got; | |
11349 | ent->got.offset = s->size; | |
11350 | s->size += 16; | |
11351 | if (info->shared) | |
11352 | { | |
11353 | asection *srel = ppc64_elf_tdata (ibfd)->relgot; | |
11354 | srel->size += sizeof (Elf64_External_Rela); | |
11355 | } | |
11356 | } | |
11357 | } | |
11358 | ||
33e44f2e | 11359 | done_something = htab->elf.irelplt->rawsize != htab->elf.irelplt->size; |
927be08e AM |
11360 | if (!done_something) |
11361 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
11362 | { | |
11363 | asection *got; | |
11364 | ||
11365 | if (!is_ppc64_elf (ibfd)) | |
11366 | continue; | |
11367 | ||
11368 | got = ppc64_elf_tdata (ibfd)->got; | |
11369 | if (got != NULL) | |
11370 | { | |
11371 | done_something = got->rawsize != got->size; | |
11372 | if (done_something) | |
11373 | break; | |
11374 | } | |
11375 | } | |
11376 | ||
11377 | if (done_something) | |
e7d1c40c | 11378 | (*htab->params->layout_sections_again) (); |
927be08e AM |
11379 | |
11380 | /* Set up for second pass over toc sections to recalculate elf_gp | |
11381 | on input sections. */ | |
11382 | htab->toc_bfd = NULL; | |
11383 | htab->toc_first_sec = NULL; | |
11384 | htab->second_toc_pass = TRUE; | |
11385 | return done_something; | |
11386 | } | |
11387 | ||
11388 | /* Called after second pass of multitoc partitioning. */ | |
11389 | ||
11390 | void | |
11391 | ppc64_elf_finish_multitoc_partition (struct bfd_link_info *info) | |
11392 | { | |
11393 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
11394 | ||
11395 | /* After the second pass, toc_curr tracks the TOC offset used | |
11396 | for code sections below in ppc64_elf_next_input_section. */ | |
3d6f9012 | 11397 | htab->toc_curr = TOC_BASE_OFF; |
ad8e1ba5 AM |
11398 | } |
11399 | ||
9b5ecbd0 AM |
11400 | /* No toc references were found in ISEC. If the code in ISEC makes no |
11401 | calls, then there's no need to use toc adjusting stubs when branching | |
11402 | into ISEC. Actually, indirect calls from ISEC are OK as they will | |
4c52953f AM |
11403 | load r2. Returns -1 on error, 0 for no stub needed, 1 for stub |
11404 | needed, and 2 if a cyclical call-graph was found but no other reason | |
11405 | for a stub was detected. If called from the top level, a return of | |
11406 | 2 means the same as a return of 0. */ | |
9b5ecbd0 AM |
11407 | |
11408 | static int | |
4ce794b7 | 11409 | toc_adjusting_stub_needed (struct bfd_link_info *info, asection *isec) |
9b5ecbd0 | 11410 | { |
9b5ecbd0 | 11411 | int ret; |
70cc837d AM |
11412 | |
11413 | /* Mark this section as checked. */ | |
11414 | isec->call_check_done = 1; | |
9b5ecbd0 | 11415 | |
772119ce AM |
11416 | /* We know none of our code bearing sections will need toc stubs. */ |
11417 | if ((isec->flags & SEC_LINKER_CREATED) != 0) | |
11418 | return 0; | |
11419 | ||
eea6121a | 11420 | if (isec->size == 0) |
082c50f8 AM |
11421 | return 0; |
11422 | ||
4c52953f AM |
11423 | if (isec->output_section == NULL) |
11424 | return 0; | |
11425 | ||
4c52953f | 11426 | ret = 0; |
70cc837d | 11427 | if (isec->reloc_count != 0) |
9b5ecbd0 | 11428 | { |
70cc837d AM |
11429 | Elf_Internal_Rela *relstart, *rel; |
11430 | Elf_Internal_Sym *local_syms; | |
11431 | struct ppc_link_hash_table *htab; | |
2917689a | 11432 | |
70cc837d AM |
11433 | relstart = _bfd_elf_link_read_relocs (isec->owner, isec, NULL, NULL, |
11434 | info->keep_memory); | |
11435 | if (relstart == NULL) | |
11436 | return -1; | |
90aecf7a | 11437 | |
70cc837d AM |
11438 | /* Look for branches to outside of this section. */ |
11439 | local_syms = NULL; | |
11440 | htab = ppc_hash_table (info); | |
11441 | if (htab == NULL) | |
11442 | return -1; | |
4c52953f | 11443 | |
70cc837d | 11444 | for (rel = relstart; rel < relstart + isec->reloc_count; ++rel) |
4c52953f | 11445 | { |
70cc837d AM |
11446 | enum elf_ppc64_reloc_type r_type; |
11447 | unsigned long r_symndx; | |
11448 | struct elf_link_hash_entry *h; | |
11449 | struct ppc_link_hash_entry *eh; | |
11450 | Elf_Internal_Sym *sym; | |
11451 | asection *sym_sec; | |
11452 | struct _opd_sec_data *opd; | |
11453 | bfd_vma sym_value; | |
11454 | bfd_vma dest; | |
11455 | ||
11456 | r_type = ELF64_R_TYPE (rel->r_info); | |
11457 | if (r_type != R_PPC64_REL24 | |
11458 | && r_type != R_PPC64_REL14 | |
11459 | && r_type != R_PPC64_REL14_BRTAKEN | |
11460 | && r_type != R_PPC64_REL14_BRNTAKEN) | |
11461 | continue; | |
4c52953f | 11462 | |
70cc837d AM |
11463 | r_symndx = ELF64_R_SYM (rel->r_info); |
11464 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, r_symndx, | |
11465 | isec->owner)) | |
4c52953f | 11466 | { |
70cc837d AM |
11467 | ret = -1; |
11468 | break; | |
11469 | } | |
4c52953f | 11470 | |
70cc837d AM |
11471 | /* Calls to dynamic lib functions go through a plt call stub |
11472 | that uses r2. */ | |
11473 | eh = (struct ppc_link_hash_entry *) h; | |
11474 | if (eh != NULL | |
11475 | && (eh->elf.plt.plist != NULL | |
11476 | || (eh->oh != NULL | |
11477 | && ppc_follow_link (eh->oh)->elf.plt.plist != NULL))) | |
11478 | { | |
11479 | ret = 1; | |
11480 | break; | |
4c52953f AM |
11481 | } |
11482 | ||
70cc837d AM |
11483 | if (sym_sec == NULL) |
11484 | /* Ignore other undefined symbols. */ | |
4c52953f | 11485 | continue; |
4c52953f | 11486 | |
70cc837d AM |
11487 | /* Assume branches to other sections not included in the |
11488 | link need stubs too, to cover -R and absolute syms. */ | |
11489 | if (sym_sec->output_section == NULL) | |
11490 | { | |
11491 | ret = 1; | |
11492 | break; | |
11493 | } | |
4c52953f | 11494 | |
70cc837d AM |
11495 | if (h == NULL) |
11496 | sym_value = sym->st_value; | |
11497 | else | |
11498 | { | |
11499 | if (h->root.type != bfd_link_hash_defined | |
11500 | && h->root.type != bfd_link_hash_defweak) | |
11501 | abort (); | |
11502 | sym_value = h->root.u.def.value; | |
11503 | } | |
11504 | sym_value += rel->r_addend; | |
4c52953f | 11505 | |
70cc837d AM |
11506 | /* If this branch reloc uses an opd sym, find the code section. */ |
11507 | opd = get_opd_info (sym_sec); | |
11508 | if (opd != NULL) | |
11509 | { | |
11510 | if (h == NULL && opd->adjust != NULL) | |
11511 | { | |
11512 | long adjust; | |
4c52953f | 11513 | |
70cc837d AM |
11514 | adjust = opd->adjust[sym->st_value / 8]; |
11515 | if (adjust == -1) | |
11516 | /* Assume deleted functions won't ever be called. */ | |
11517 | continue; | |
11518 | sym_value += adjust; | |
11519 | } | |
4c52953f | 11520 | |
aef36ac1 AM |
11521 | dest = opd_entry_value (sym_sec, sym_value, |
11522 | &sym_sec, NULL, FALSE); | |
70cc837d AM |
11523 | if (dest == (bfd_vma) -1) |
11524 | continue; | |
11525 | } | |
11526 | else | |
11527 | dest = (sym_value | |
11528 | + sym_sec->output_offset | |
11529 | + sym_sec->output_section->vma); | |
4c52953f | 11530 | |
70cc837d AM |
11531 | /* Ignore branch to self. */ |
11532 | if (sym_sec == isec) | |
11533 | continue; | |
4c52953f | 11534 | |
70cc837d AM |
11535 | /* If the called function uses the toc, we need a stub. */ |
11536 | if (sym_sec->has_toc_reloc | |
11537 | || sym_sec->makes_toc_func_call) | |
4c52953f | 11538 | { |
70cc837d | 11539 | ret = 1; |
4c52953f AM |
11540 | break; |
11541 | } | |
70cc837d AM |
11542 | |
11543 | /* Assume any branch that needs a long branch stub might in fact | |
11544 | need a plt_branch stub. A plt_branch stub uses r2. */ | |
11545 | else if (dest - (isec->output_offset | |
11546 | + isec->output_section->vma | |
6911b7dc AM |
11547 | + rel->r_offset) + (1 << 25) |
11548 | >= (2u << 25) - PPC64_LOCAL_ENTRY_OFFSET (h | |
11549 | ? h->other | |
11550 | : sym->st_other)) | |
4c52953f | 11551 | { |
70cc837d AM |
11552 | ret = 1; |
11553 | break; | |
11554 | } | |
11555 | ||
11556 | /* If calling back to a section in the process of being | |
11557 | tested, we can't say for sure that no toc adjusting stubs | |
11558 | are needed, so don't return zero. */ | |
11559 | else if (sym_sec->call_check_in_progress) | |
11560 | ret = 2; | |
11561 | ||
11562 | /* Branches to another section that itself doesn't have any TOC | |
11563 | references are OK. Recursively call ourselves to check. */ | |
11564 | else if (!sym_sec->call_check_done) | |
11565 | { | |
11566 | int recur; | |
11567 | ||
11568 | /* Mark current section as indeterminate, so that other | |
11569 | sections that call back to current won't be marked as | |
11570 | known. */ | |
11571 | isec->call_check_in_progress = 1; | |
11572 | recur = toc_adjusting_stub_needed (info, sym_sec); | |
11573 | isec->call_check_in_progress = 0; | |
11574 | ||
4c52953f AM |
11575 | if (recur != 0) |
11576 | { | |
70cc837d AM |
11577 | ret = recur; |
11578 | if (recur != 2) | |
11579 | break; | |
4c52953f AM |
11580 | } |
11581 | } | |
4c52953f | 11582 | } |
70cc837d AM |
11583 | |
11584 | if (local_syms != NULL | |
11585 | && (elf_symtab_hdr (isec->owner).contents | |
11586 | != (unsigned char *) local_syms)) | |
11587 | free (local_syms); | |
11588 | if (elf_section_data (isec)->relocs != relstart) | |
11589 | free (relstart); | |
9b5ecbd0 AM |
11590 | } |
11591 | ||
70cc837d AM |
11592 | if ((ret & 1) == 0 |
11593 | && isec->map_head.s != NULL | |
11594 | && (strcmp (isec->output_section->name, ".init") == 0 | |
11595 | || strcmp (isec->output_section->name, ".fini") == 0)) | |
11596 | { | |
11597 | if (isec->map_head.s->has_toc_reloc | |
11598 | || isec->map_head.s->makes_toc_func_call) | |
11599 | ret = 1; | |
11600 | else if (!isec->map_head.s->call_check_done) | |
11601 | { | |
11602 | int recur; | |
11603 | isec->call_check_in_progress = 1; | |
11604 | recur = toc_adjusting_stub_needed (info, isec->map_head.s); | |
11605 | isec->call_check_in_progress = 0; | |
11606 | if (recur != 0) | |
11607 | ret = recur; | |
11608 | } | |
11609 | } | |
11610 | ||
11611 | if (ret == 1) | |
11612 | isec->makes_toc_func_call = 1; | |
4c52953f | 11613 | |
9b5ecbd0 AM |
11614 | return ret; |
11615 | } | |
11616 | ||
721956f4 AM |
11617 | /* The linker repeatedly calls this function for each input section, |
11618 | in the order that input sections are linked into output sections. | |
11619 | Build lists of input sections to determine groupings between which | |
11620 | we may insert linker stubs. */ | |
11621 | ||
9b5ecbd0 | 11622 | bfd_boolean |
4ce794b7 | 11623 | ppc64_elf_next_input_section (struct bfd_link_info *info, asection *isec) |
721956f4 AM |
11624 | { |
11625 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
11626 | ||
4dfe6ac6 NC |
11627 | if (htab == NULL) |
11628 | return FALSE; | |
11629 | ||
734b6cf9 AM |
11630 | if ((isec->output_section->flags & SEC_CODE) != 0 |
11631 | && isec->output_section->index <= htab->top_index) | |
721956f4 | 11632 | { |
734b6cf9 | 11633 | asection **list = htab->input_list + isec->output_section->index; |
3d6f9012 | 11634 | /* Steal the link_sec pointer for our list. */ |
721956f4 | 11635 | #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec) |
3d6f9012 AM |
11636 | /* This happens to make the list in reverse order, |
11637 | which is what we want. */ | |
734b6cf9 AM |
11638 | PREV_SEC (isec) = *list; |
11639 | *list = isec; | |
721956f4 | 11640 | } |
ad8e1ba5 | 11641 | |
4c52953f | 11642 | if (htab->multi_toc_needed) |
9b5ecbd0 | 11643 | { |
8b974ba3 AM |
11644 | /* Analyse sections that aren't already flagged as needing a |
11645 | valid toc pointer. Exclude .fixup for the linux kernel. | |
11646 | .fixup contains branches, but only back to the function that | |
11647 | hit an exception. */ | |
11648 | if (!(isec->has_toc_reloc | |
11649 | || (isec->flags & SEC_CODE) == 0 | |
11650 | || strcmp (isec->name, ".fixup") == 0 | |
11651 | || isec->call_check_done)) | |
11652 | { | |
11653 | if (toc_adjusting_stub_needed (info, isec) < 0) | |
6683a28d | 11654 | return FALSE; |
8b974ba3 AM |
11655 | } |
11656 | /* Make all sections use the TOC assigned for this object file. | |
11657 | This will be wrong for pasted sections; We fix that in | |
11658 | check_pasted_section(). */ | |
11659 | if (elf_gp (isec->owner) != 0) | |
11660 | htab->toc_curr = elf_gp (isec->owner); | |
11661 | } | |
11662 | ||
ad8e1ba5 | 11663 | htab->stub_group[isec->id].toc_off = htab->toc_curr; |
9b5ecbd0 | 11664 | return TRUE; |
721956f4 AM |
11665 | } |
11666 | ||
70cc837d AM |
11667 | /* Check that all .init and .fini sections use the same toc, if they |
11668 | have toc relocs. */ | |
11669 | ||
11670 | static bfd_boolean | |
11671 | check_pasted_section (struct bfd_link_info *info, const char *name) | |
11672 | { | |
11673 | asection *o = bfd_get_section_by_name (info->output_bfd, name); | |
11674 | ||
11675 | if (o != NULL) | |
11676 | { | |
11677 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
11678 | bfd_vma toc_off = 0; | |
11679 | asection *i; | |
11680 | ||
11681 | for (i = o->map_head.s; i != NULL; i = i->map_head.s) | |
11682 | if (i->has_toc_reloc) | |
11683 | { | |
11684 | if (toc_off == 0) | |
11685 | toc_off = htab->stub_group[i->id].toc_off; | |
11686 | else if (toc_off != htab->stub_group[i->id].toc_off) | |
11687 | return FALSE; | |
11688 | } | |
6683a28d AM |
11689 | |
11690 | if (toc_off == 0) | |
11691 | for (i = o->map_head.s; i != NULL; i = i->map_head.s) | |
11692 | if (i->makes_toc_func_call) | |
11693 | { | |
11694 | toc_off = htab->stub_group[i->id].toc_off; | |
11695 | break; | |
11696 | } | |
11697 | ||
70cc837d AM |
11698 | /* Make sure the whole pasted function uses the same toc offset. */ |
11699 | if (toc_off != 0) | |
11700 | for (i = o->map_head.s; i != NULL; i = i->map_head.s) | |
11701 | htab->stub_group[i->id].toc_off = toc_off; | |
11702 | } | |
11703 | return TRUE; | |
11704 | } | |
11705 | ||
11706 | bfd_boolean | |
11707 | ppc64_elf_check_init_fini (struct bfd_link_info *info) | |
11708 | { | |
11709 | return (check_pasted_section (info, ".init") | |
11710 | & check_pasted_section (info, ".fini")); | |
11711 | } | |
11712 | ||
721956f4 AM |
11713 | /* See whether we can group stub sections together. Grouping stub |
11714 | sections may result in fewer stubs. More importantly, we need to | |
11715 | put all .init* and .fini* stubs at the beginning of the .init or | |
11716 | .fini output sections respectively, because glibc splits the | |
11717 | _init and _fini functions into multiple parts. Putting a stub in | |
11718 | the middle of a function is not a good idea. */ | |
11719 | ||
11720 | static void | |
4ce794b7 AM |
11721 | group_sections (struct ppc_link_hash_table *htab, |
11722 | bfd_size_type stub_group_size, | |
11723 | bfd_boolean stubs_always_before_branch) | |
721956f4 | 11724 | { |
7c8fe5c4 AM |
11725 | asection **list; |
11726 | bfd_size_type stub14_group_size; | |
11727 | bfd_boolean suppress_size_errors; | |
11728 | ||
11729 | suppress_size_errors = FALSE; | |
11730 | stub14_group_size = stub_group_size; | |
11731 | if (stub_group_size == 1) | |
11732 | { | |
11733 | /* Default values. */ | |
11734 | if (stubs_always_before_branch) | |
11735 | { | |
11736 | stub_group_size = 0x1e00000; | |
11737 | stub14_group_size = 0x7800; | |
11738 | } | |
11739 | else | |
11740 | { | |
11741 | stub_group_size = 0x1c00000; | |
11742 | stub14_group_size = 0x7000; | |
11743 | } | |
11744 | suppress_size_errors = TRUE; | |
11745 | } | |
11746 | ||
11747 | list = htab->input_list + htab->top_index; | |
734b6cf9 | 11748 | do |
721956f4 | 11749 | { |
734b6cf9 AM |
11750 | asection *tail = *list; |
11751 | while (tail != NULL) | |
721956f4 | 11752 | { |
734b6cf9 AM |
11753 | asection *curr; |
11754 | asection *prev; | |
11755 | bfd_size_type total; | |
11756 | bfd_boolean big_sec; | |
11757 | bfd_vma curr_toc; | |
11758 | ||
11759 | curr = tail; | |
eea6121a | 11760 | total = tail->size; |
6bee8834 AM |
11761 | big_sec = total > (ppc64_elf_section_data (tail) != NULL |
11762 | && ppc64_elf_section_data (tail)->has_14bit_branch | |
7c8fe5c4 AM |
11763 | ? stub14_group_size : stub_group_size); |
11764 | if (big_sec && !suppress_size_errors) | |
5c3dead3 AM |
11765 | (*_bfd_error_handler) (_("%B section %A exceeds stub group size"), |
11766 | tail->owner, tail); | |
734b6cf9 AM |
11767 | curr_toc = htab->stub_group[tail->id].toc_off; |
11768 | ||
11769 | while ((prev = PREV_SEC (curr)) != NULL | |
11770 | && ((total += curr->output_offset - prev->output_offset) | |
6bee8834 AM |
11771 | < (ppc64_elf_section_data (prev) != NULL |
11772 | && ppc64_elf_section_data (prev)->has_14bit_branch | |
7c8fe5c4 | 11773 | ? stub14_group_size : stub_group_size)) |
ad8e1ba5 | 11774 | && htab->stub_group[prev->id].toc_off == curr_toc) |
734b6cf9 AM |
11775 | curr = prev; |
11776 | ||
11777 | /* OK, the size from the start of CURR to the end is less | |
11778 | than stub_group_size and thus can be handled by one stub | |
11779 | section. (or the tail section is itself larger than | |
11780 | stub_group_size, in which case we may be toast.) We | |
11781 | should really be keeping track of the total size of stubs | |
11782 | added here, as stubs contribute to the final output | |
11783 | section size. That's a little tricky, and this way will | |
11784 | only break if stubs added make the total size more than | |
11785 | 2^25, ie. for the default stub_group_size, if stubs total | |
11786 | more than 2097152 bytes, or nearly 75000 plt call stubs. */ | |
11787 | do | |
721956f4 AM |
11788 | { |
11789 | prev = PREV_SEC (tail); | |
734b6cf9 | 11790 | /* Set up this stub group. */ |
721956f4 AM |
11791 | htab->stub_group[tail->id].link_sec = curr; |
11792 | } | |
734b6cf9 AM |
11793 | while (tail != curr && (tail = prev) != NULL); |
11794 | ||
11795 | /* But wait, there's more! Input sections up to stub_group_size | |
11796 | bytes before the stub section can be handled by it too. | |
11797 | Don't do this if we have a really large section after the | |
11798 | stubs, as adding more stubs increases the chance that | |
11799 | branches may not reach into the stub section. */ | |
11800 | if (!stubs_always_before_branch && !big_sec) | |
11801 | { | |
11802 | total = 0; | |
11803 | while (prev != NULL | |
11804 | && ((total += tail->output_offset - prev->output_offset) | |
6bee8834 AM |
11805 | < (ppc64_elf_section_data (prev) != NULL |
11806 | && ppc64_elf_section_data (prev)->has_14bit_branch | |
7c8fe5c4 | 11807 | ? stub14_group_size : stub_group_size)) |
734b6cf9 AM |
11808 | && htab->stub_group[prev->id].toc_off == curr_toc) |
11809 | { | |
11810 | tail = prev; | |
11811 | prev = PREV_SEC (tail); | |
11812 | htab->stub_group[tail->id].link_sec = curr; | |
11813 | } | |
11814 | } | |
11815 | tail = prev; | |
721956f4 AM |
11816 | } |
11817 | } | |
734b6cf9 AM |
11818 | while (list-- != htab->input_list); |
11819 | free (htab->input_list); | |
721956f4 AM |
11820 | #undef PREV_SEC |
11821 | } | |
11822 | ||
58d180e8 AM |
11823 | static const unsigned char glink_eh_frame_cie[] = |
11824 | { | |
11825 | 0, 0, 0, 16, /* length. */ | |
11826 | 0, 0, 0, 0, /* id. */ | |
11827 | 1, /* CIE version. */ | |
11828 | 'z', 'R', 0, /* Augmentation string. */ | |
11829 | 4, /* Code alignment. */ | |
11830 | 0x78, /* Data alignment. */ | |
11831 | 65, /* RA reg. */ | |
11832 | 1, /* Augmentation size. */ | |
11833 | DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding. */ | |
11834 | DW_CFA_def_cfa, 1, 0 /* def_cfa: r1 offset 0. */ | |
11835 | }; | |
11836 | ||
d969d15f AM |
11837 | /* Stripping output sections is normally done before dynamic section |
11838 | symbols have been allocated. This function is called later, and | |
11839 | handles cases like htab->brlt which is mapped to its own output | |
11840 | section. */ | |
11841 | ||
11842 | static void | |
11843 | maybe_strip_output (struct bfd_link_info *info, asection *isec) | |
11844 | { | |
11845 | if (isec->size == 0 | |
11846 | && isec->output_section->size == 0 | |
53d8967a | 11847 | && !(isec->output_section->flags & SEC_KEEP) |
d969d15f AM |
11848 | && !bfd_section_removed_from_list (info->output_bfd, |
11849 | isec->output_section) | |
11850 | && elf_section_data (isec->output_section)->dynindx == 0) | |
11851 | { | |
11852 | isec->output_section->flags |= SEC_EXCLUDE; | |
11853 | bfd_section_list_remove (info->output_bfd, isec->output_section); | |
11854 | info->output_bfd->section_count--; | |
11855 | } | |
11856 | } | |
11857 | ||
721956f4 AM |
11858 | /* Determine and set the size of the stub section for a final link. |
11859 | ||
11860 | The basic idea here is to examine all the relocations looking for | |
11861 | PC-relative calls to a target that is unreachable with a "bl" | |
11862 | instruction. */ | |
11863 | ||
b34976b6 | 11864 | bfd_boolean |
e7d1c40c | 11865 | ppc64_elf_size_stubs (struct bfd_link_info *info) |
721956f4 AM |
11866 | { |
11867 | bfd_size_type stub_group_size; | |
b34976b6 | 11868 | bfd_boolean stubs_always_before_branch; |
721956f4 AM |
11869 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
11870 | ||
4dfe6ac6 NC |
11871 | if (htab == NULL) |
11872 | return FALSE; | |
11873 | ||
e7d1c40c AM |
11874 | if (htab->params->plt_thread_safe == -1 && !info->executable) |
11875 | htab->params->plt_thread_safe = 1; | |
b9e5796b | 11876 | if (!htab->opd_abi) |
e7d1c40c AM |
11877 | htab->params->plt_thread_safe = 0; |
11878 | else if (htab->params->plt_thread_safe == -1) | |
794e51c0 | 11879 | { |
e2458743 | 11880 | static const char *const thread_starter[] = |
794e51c0 AM |
11881 | { |
11882 | "pthread_create", | |
11883 | /* libstdc++ */ | |
11884 | "_ZNSt6thread15_M_start_threadESt10shared_ptrINS_10_Impl_baseEE", | |
11885 | /* librt */ | |
11886 | "aio_init", "aio_read", "aio_write", "aio_fsync", "lio_listio", | |
11887 | "mq_notify", "create_timer", | |
11888 | /* libanl */ | |
11889 | "getaddrinfo_a", | |
11890 | /* libgomp */ | |
11891 | "GOMP_parallel_start", | |
11892 | "GOMP_parallel_loop_static_start", | |
11893 | "GOMP_parallel_loop_dynamic_start", | |
11894 | "GOMP_parallel_loop_guided_start", | |
11895 | "GOMP_parallel_loop_runtime_start", | |
68ffbac6 | 11896 | "GOMP_parallel_sections_start", |
794e51c0 AM |
11897 | }; |
11898 | unsigned i; | |
11899 | ||
11900 | for (i = 0; i < sizeof (thread_starter)/ sizeof (thread_starter[0]); i++) | |
11901 | { | |
11902 | struct elf_link_hash_entry *h; | |
11903 | h = elf_link_hash_lookup (&htab->elf, thread_starter[i], | |
11904 | FALSE, FALSE, TRUE); | |
e7d1c40c AM |
11905 | htab->params->plt_thread_safe = h != NULL && h->ref_regular; |
11906 | if (htab->params->plt_thread_safe) | |
794e51c0 AM |
11907 | break; |
11908 | } | |
11909 | } | |
e7d1c40c AM |
11910 | stubs_always_before_branch = htab->params->group_size < 0; |
11911 | if (htab->params->group_size < 0) | |
11912 | stub_group_size = -htab->params->group_size; | |
721956f4 | 11913 | else |
e7d1c40c | 11914 | stub_group_size = htab->params->group_size; |
721956f4 AM |
11915 | |
11916 | group_sections (htab, stub_group_size, stubs_always_before_branch); | |
11917 | ||
721956f4 AM |
11918 | while (1) |
11919 | { | |
11920 | bfd *input_bfd; | |
11921 | unsigned int bfd_indx; | |
11922 | asection *stub_sec; | |
721956f4 AM |
11923 | |
11924 | htab->stub_iteration += 1; | |
721956f4 AM |
11925 | |
11926 | for (input_bfd = info->input_bfds, bfd_indx = 0; | |
11927 | input_bfd != NULL; | |
11928 | input_bfd = input_bfd->link_next, bfd_indx++) | |
11929 | { | |
11930 | Elf_Internal_Shdr *symtab_hdr; | |
11931 | asection *section; | |
6cdc0ccc | 11932 | Elf_Internal_Sym *local_syms = NULL; |
721956f4 | 11933 | |
0c8d6e5c | 11934 | if (!is_ppc64_elf (input_bfd)) |
67f93c31 AM |
11935 | continue; |
11936 | ||
721956f4 | 11937 | /* We'll need the symbol table in a second. */ |
0ffa91dd | 11938 | symtab_hdr = &elf_symtab_hdr (input_bfd); |
721956f4 AM |
11939 | if (symtab_hdr->sh_info == 0) |
11940 | continue; | |
11941 | ||
721956f4 AM |
11942 | /* Walk over each section attached to the input bfd. */ |
11943 | for (section = input_bfd->sections; | |
11944 | section != NULL; | |
11945 | section = section->next) | |
11946 | { | |
721956f4 | 11947 | Elf_Internal_Rela *internal_relocs, *irelaend, *irela; |
721956f4 AM |
11948 | |
11949 | /* If there aren't any relocs, then there's nothing more | |
11950 | to do. */ | |
11951 | if ((section->flags & SEC_RELOC) == 0 | |
12c0f757 AM |
11952 | || (section->flags & SEC_ALLOC) == 0 |
11953 | || (section->flags & SEC_LOAD) == 0 | |
11954 | || (section->flags & SEC_CODE) == 0 | |
721956f4 AM |
11955 | || section->reloc_count == 0) |
11956 | continue; | |
11957 | ||
11958 | /* If this section is a link-once section that will be | |
11959 | discarded, then don't create any stubs. */ | |
11960 | if (section->output_section == NULL | |
927be08e | 11961 | || section->output_section->owner != info->output_bfd) |
721956f4 AM |
11962 | continue; |
11963 | ||
1e2f5b6e AM |
11964 | /* Get the relocs. */ |
11965 | internal_relocs | |
4ce794b7 | 11966 | = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL, |
45d6a902 | 11967 | info->keep_memory); |
721956f4 | 11968 | if (internal_relocs == NULL) |
1e2f5b6e | 11969 | goto error_ret_free_local; |
721956f4 AM |
11970 | |
11971 | /* Now examine each relocation. */ | |
11972 | irela = internal_relocs; | |
11973 | irelaend = irela + section->reloc_count; | |
11974 | for (; irela < irelaend; irela++) | |
11975 | { | |
4ce794b7 AM |
11976 | enum elf_ppc64_reloc_type r_type; |
11977 | unsigned int r_indx; | |
721956f4 AM |
11978 | enum ppc_stub_type stub_type; |
11979 | struct ppc_stub_hash_entry *stub_entry; | |
8387904d | 11980 | asection *sym_sec, *code_sec; |
e054468f | 11981 | bfd_vma sym_value, code_value; |
721956f4 | 11982 | bfd_vma destination; |
6911b7dc | 11983 | unsigned long local_off; |
8843416a | 11984 | bfd_boolean ok_dest; |
721956f4 | 11985 | struct ppc_link_hash_entry *hash; |
8387904d | 11986 | struct ppc_link_hash_entry *fdh; |
411e1bfb AM |
11987 | struct elf_link_hash_entry *h; |
11988 | Elf_Internal_Sym *sym; | |
721956f4 AM |
11989 | char *stub_name; |
11990 | const asection *id_sec; | |
74f0fb50 | 11991 | struct _opd_sec_data *opd; |
e054468f | 11992 | struct plt_entry *plt_ent; |
721956f4 AM |
11993 | |
11994 | r_type = ELF64_R_TYPE (irela->r_info); | |
11995 | r_indx = ELF64_R_SYM (irela->r_info); | |
11996 | ||
4ce794b7 | 11997 | if (r_type >= R_PPC64_max) |
721956f4 AM |
11998 | { |
11999 | bfd_set_error (bfd_error_bad_value); | |
6cdc0ccc | 12000 | goto error_ret_free_internal; |
721956f4 AM |
12001 | } |
12002 | ||
12003 | /* Only look for stubs on branch instructions. */ | |
4ce794b7 AM |
12004 | if (r_type != R_PPC64_REL24 |
12005 | && r_type != R_PPC64_REL14 | |
12006 | && r_type != R_PPC64_REL14_BRTAKEN | |
12007 | && r_type != R_PPC64_REL14_BRNTAKEN) | |
721956f4 AM |
12008 | continue; |
12009 | ||
12010 | /* Now determine the call target, its name, value, | |
12011 | section. */ | |
411e1bfb AM |
12012 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, |
12013 | r_indx, input_bfd)) | |
12014 | goto error_ret_free_internal; | |
12015 | hash = (struct ppc_link_hash_entry *) h; | |
12016 | ||
8843416a | 12017 | ok_dest = FALSE; |
8387904d | 12018 | fdh = NULL; |
7fe2b9a6 | 12019 | sym_value = 0; |
411e1bfb | 12020 | if (hash == NULL) |
721956f4 | 12021 | { |
411e1bfb | 12022 | sym_value = sym->st_value; |
8843416a | 12023 | ok_dest = TRUE; |
721956f4 | 12024 | } |
7fe2b9a6 AM |
12025 | else if (hash->elf.root.type == bfd_link_hash_defined |
12026 | || hash->elf.root.type == bfd_link_hash_defweak) | |
12027 | { | |
12028 | sym_value = hash->elf.root.u.def.value; | |
12029 | if (sym_sec->output_section != NULL) | |
12030 | ok_dest = TRUE; | |
12031 | } | |
12032 | else if (hash->elf.root.type == bfd_link_hash_undefweak | |
12033 | || hash->elf.root.type == bfd_link_hash_undefined) | |
721956f4 | 12034 | { |
99877b66 | 12035 | /* Recognise an old ABI func code entry sym, and |
7fe2b9a6 AM |
12036 | use the func descriptor sym instead if it is |
12037 | defined. */ | |
ceb1f1ef | 12038 | if (hash->elf.root.root.string[0] == '.' |
b31867b6 | 12039 | && (fdh = lookup_fdh (hash, htab)) != NULL) |
8387904d | 12040 | { |
8387904d AM |
12041 | if (fdh->elf.root.type == bfd_link_hash_defined |
12042 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
12043 | { | |
12044 | sym_sec = fdh->elf.root.u.def.section; | |
12045 | sym_value = fdh->elf.root.u.def.value; | |
12046 | if (sym_sec->output_section != NULL) | |
12047 | ok_dest = TRUE; | |
12048 | } | |
99877b66 AM |
12049 | else |
12050 | fdh = NULL; | |
8387904d | 12051 | } |
7fe2b9a6 AM |
12052 | } |
12053 | else | |
12054 | { | |
12055 | bfd_set_error (bfd_error_bad_value); | |
12056 | goto error_ret_free_internal; | |
721956f4 AM |
12057 | } |
12058 | ||
8843416a | 12059 | destination = 0; |
6911b7dc | 12060 | local_off = 0; |
8843416a AM |
12061 | if (ok_dest) |
12062 | { | |
12063 | sym_value += irela->r_addend; | |
12064 | destination = (sym_value | |
12065 | + sym_sec->output_offset | |
12066 | + sym_sec->output_section->vma); | |
6911b7dc AM |
12067 | local_off = PPC64_LOCAL_ENTRY_OFFSET (hash |
12068 | ? hash->elf.other | |
12069 | : sym->st_other); | |
8843416a AM |
12070 | } |
12071 | ||
8387904d | 12072 | code_sec = sym_sec; |
e054468f | 12073 | code_value = sym_value; |
74f0fb50 AM |
12074 | opd = get_opd_info (sym_sec); |
12075 | if (opd != NULL) | |
8387904d AM |
12076 | { |
12077 | bfd_vma dest; | |
12078 | ||
74f0fb50 | 12079 | if (hash == NULL && opd->adjust != NULL) |
8387904d | 12080 | { |
74f0fb50 | 12081 | long adjust = opd->adjust[sym_value / 8]; |
8387904d AM |
12082 | if (adjust == -1) |
12083 | continue; | |
e054468f | 12084 | code_value += adjust; |
8387904d AM |
12085 | sym_value += adjust; |
12086 | } | |
12087 | dest = opd_entry_value (sym_sec, sym_value, | |
aef36ac1 | 12088 | &code_sec, &code_value, FALSE); |
8387904d AM |
12089 | if (dest != (bfd_vma) -1) |
12090 | { | |
12091 | destination = dest; | |
12092 | if (fdh != NULL) | |
12093 | { | |
12094 | /* Fixup old ABI sym to point at code | |
12095 | entry. */ | |
99877b66 | 12096 | hash->elf.root.type = bfd_link_hash_defweak; |
8387904d | 12097 | hash->elf.root.u.def.section = code_sec; |
e054468f | 12098 | hash->elf.root.u.def.value = code_value; |
8387904d AM |
12099 | } |
12100 | } | |
12101 | } | |
12102 | ||
721956f4 | 12103 | /* Determine what (if any) linker stub is needed. */ |
e054468f | 12104 | plt_ent = NULL; |
721956f4 | 12105 | stub_type = ppc_type_of_stub (section, irela, &hash, |
6911b7dc AM |
12106 | &plt_ent, destination, |
12107 | local_off); | |
ad8e1ba5 AM |
12108 | |
12109 | if (stub_type != ppc_stub_plt_call) | |
12110 | { | |
12111 | /* Check whether we need a TOC adjusting stub. | |
12112 | Since the linker pastes together pieces from | |
12113 | different object files when creating the | |
12114 | _init and _fini functions, it may be that a | |
12115 | call to what looks like a local sym is in | |
12116 | fact a call needing a TOC adjustment. */ | |
8387904d AM |
12117 | if (code_sec != NULL |
12118 | && code_sec->output_section != NULL | |
12119 | && (htab->stub_group[code_sec->id].toc_off | |
9b5ecbd0 | 12120 | != htab->stub_group[section->id].toc_off) |
4c52953f AM |
12121 | && (code_sec->has_toc_reloc |
12122 | || code_sec->makes_toc_func_call)) | |
ad8e1ba5 AM |
12123 | stub_type = ppc_stub_long_branch_r2off; |
12124 | } | |
12125 | ||
721956f4 AM |
12126 | if (stub_type == ppc_stub_none) |
12127 | continue; | |
12128 | ||
411e1bfb AM |
12129 | /* __tls_get_addr calls might be eliminated. */ |
12130 | if (stub_type != ppc_stub_plt_call | |
12131 | && hash != NULL | |
8387904d AM |
12132 | && (hash == htab->tls_get_addr |
12133 | || hash == htab->tls_get_addr_fd) | |
411e1bfb AM |
12134 | && section->has_tls_reloc |
12135 | && irela != internal_relocs) | |
12136 | { | |
12137 | /* Get tls info. */ | |
f961d9dd | 12138 | unsigned char *tls_mask; |
411e1bfb | 12139 | |
3a71aa26 | 12140 | if (!get_tls_mask (&tls_mask, NULL, NULL, &local_syms, |
411e1bfb AM |
12141 | irela - 1, input_bfd)) |
12142 | goto error_ret_free_internal; | |
e7b938ca | 12143 | if (*tls_mask != 0) |
411e1bfb AM |
12144 | continue; |
12145 | } | |
12146 | ||
3b421ab3 AM |
12147 | if (stub_type == ppc_stub_plt_call |
12148 | && irela + 1 < irelaend | |
12149 | && irela[1].r_offset == irela->r_offset + 4 | |
794e51c0 AM |
12150 | && ELF64_R_TYPE (irela[1].r_info) == R_PPC64_TOCSAVE) |
12151 | { | |
12152 | if (!tocsave_find (htab, INSERT, | |
12153 | &local_syms, irela + 1, input_bfd)) | |
12154 | goto error_ret_free_internal; | |
12155 | } | |
12156 | else if (stub_type == ppc_stub_plt_call) | |
12157 | stub_type = ppc_stub_plt_call_r2save; | |
3b421ab3 | 12158 | |
721956f4 AM |
12159 | /* Support for grouping stub sections. */ |
12160 | id_sec = htab->stub_group[section->id].link_sec; | |
12161 | ||
12162 | /* Get the name of this stub. */ | |
12163 | stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela); | |
12164 | if (!stub_name) | |
12165 | goto error_ret_free_internal; | |
12166 | ||
12167 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, | |
b34976b6 | 12168 | stub_name, FALSE, FALSE); |
721956f4 AM |
12169 | if (stub_entry != NULL) |
12170 | { | |
12171 | /* The proper stub has already been created. */ | |
12172 | free (stub_name); | |
794e51c0 AM |
12173 | if (stub_type == ppc_stub_plt_call_r2save) |
12174 | stub_entry->stub_type = stub_type; | |
721956f4 AM |
12175 | continue; |
12176 | } | |
12177 | ||
25f53a85 | 12178 | stub_entry = ppc_add_stub (stub_name, section, info); |
721956f4 AM |
12179 | if (stub_entry == NULL) |
12180 | { | |
12181 | free (stub_name); | |
6cdc0ccc AM |
12182 | error_ret_free_internal: |
12183 | if (elf_section_data (section)->relocs == NULL) | |
12184 | free (internal_relocs); | |
12185 | error_ret_free_local: | |
12186 | if (local_syms != NULL | |
12187 | && (symtab_hdr->contents | |
12188 | != (unsigned char *) local_syms)) | |
12189 | free (local_syms); | |
b34976b6 | 12190 | return FALSE; |
721956f4 AM |
12191 | } |
12192 | ||
ad8e1ba5 | 12193 | stub_entry->stub_type = stub_type; |
794e51c0 AM |
12194 | if (stub_type != ppc_stub_plt_call |
12195 | && stub_type != ppc_stub_plt_call_r2save) | |
e054468f AM |
12196 | { |
12197 | stub_entry->target_value = code_value; | |
12198 | stub_entry->target_section = code_sec; | |
12199 | } | |
12200 | else | |
12201 | { | |
12202 | stub_entry->target_value = sym_value; | |
12203 | stub_entry->target_section = sym_sec; | |
12204 | } | |
721956f4 | 12205 | stub_entry->h = hash; |
e054468f | 12206 | stub_entry->plt_ent = plt_ent; |
6911b7dc | 12207 | stub_entry->other = hash ? hash->elf.other : sym->st_other; |
ee75fd95 AM |
12208 | |
12209 | if (stub_entry->h != NULL) | |
12210 | htab->stub_globals += 1; | |
721956f4 AM |
12211 | } |
12212 | ||
12213 | /* We're done with the internal relocs, free them. */ | |
6cdc0ccc | 12214 | if (elf_section_data (section)->relocs != internal_relocs) |
1e2f5b6e | 12215 | free (internal_relocs); |
721956f4 | 12216 | } |
6cdc0ccc AM |
12217 | |
12218 | if (local_syms != NULL | |
12219 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
12220 | { | |
12221 | if (!info->keep_memory) | |
12222 | free (local_syms); | |
12223 | else | |
12224 | symtab_hdr->contents = (unsigned char *) local_syms; | |
12225 | } | |
721956f4 AM |
12226 | } |
12227 | ||
5c3dead3 | 12228 | /* We may have added some stubs. Find out the new size of the |
721956f4 | 12229 | stub sections. */ |
e7d1c40c | 12230 | for (stub_sec = htab->params->stub_bfd->sections; |
721956f4 AM |
12231 | stub_sec != NULL; |
12232 | stub_sec = stub_sec->next) | |
e717da7e | 12233 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) |
ee75fd95 | 12234 | { |
5c3dead3 | 12235 | stub_sec->rawsize = stub_sec->size; |
ee75fd95 AM |
12236 | stub_sec->size = 0; |
12237 | stub_sec->reloc_count = 0; | |
84f5d08e | 12238 | stub_sec->flags &= ~SEC_RELOC; |
ee75fd95 | 12239 | } |
eea6121a AM |
12240 | |
12241 | htab->brlt->size = 0; | |
84f5d08e AM |
12242 | htab->brlt->reloc_count = 0; |
12243 | htab->brlt->flags &= ~SEC_RELOC; | |
ee75fd95 | 12244 | if (htab->relbrlt != NULL) |
eea6121a | 12245 | htab->relbrlt->size = 0; |
721956f4 | 12246 | |
63bc6f6c | 12247 | bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, info); |
721956f4 | 12248 | |
176a0d42 AM |
12249 | if (info->emitrelocations |
12250 | && htab->glink != NULL && htab->glink->size != 0) | |
12251 | { | |
12252 | htab->glink->reloc_count = 1; | |
12253 | htab->glink->flags |= SEC_RELOC; | |
12254 | } | |
12255 | ||
58d180e8 AM |
12256 | if (htab->glink_eh_frame != NULL |
12257 | && !bfd_is_abs_section (htab->glink_eh_frame->output_section) | |
9a2a56cc | 12258 | && htab->glink_eh_frame->output_section->size != 0) |
58d180e8 | 12259 | { |
4bbe044a | 12260 | size_t size = 0, align; |
58d180e8 | 12261 | |
e7d1c40c | 12262 | for (stub_sec = htab->params->stub_bfd->sections; |
58d180e8 AM |
12263 | stub_sec != NULL; |
12264 | stub_sec = stub_sec->next) | |
12265 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) | |
12266 | size += 20; | |
12267 | if (htab->glink != NULL && htab->glink->size != 0) | |
12268 | size += 24; | |
12269 | if (size != 0) | |
12270 | size += sizeof (glink_eh_frame_cie); | |
4bbe044a AM |
12271 | align = 1; |
12272 | align <<= htab->glink_eh_frame->output_section->alignment_power; | |
12273 | align -= 1; | |
12274 | size = (size + align) & ~align; | |
58d180e8 AM |
12275 | htab->glink_eh_frame->rawsize = htab->glink_eh_frame->size; |
12276 | htab->glink_eh_frame->size = size; | |
12277 | } | |
12278 | ||
e7d1c40c AM |
12279 | if (htab->params->plt_stub_align != 0) |
12280 | for (stub_sec = htab->params->stub_bfd->sections; | |
794e51c0 AM |
12281 | stub_sec != NULL; |
12282 | stub_sec = stub_sec->next) | |
12283 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) | |
e7d1c40c AM |
12284 | stub_sec->size = ((stub_sec->size |
12285 | + (1 << htab->params->plt_stub_align) - 1) | |
12286 | & (-1 << htab->params->plt_stub_align)); | |
794e51c0 | 12287 | |
e7d1c40c | 12288 | for (stub_sec = htab->params->stub_bfd->sections; |
5c3dead3 AM |
12289 | stub_sec != NULL; |
12290 | stub_sec = stub_sec->next) | |
12291 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0 | |
12292 | && stub_sec->rawsize != stub_sec->size) | |
12293 | break; | |
12294 | ||
12295 | /* Exit from this loop when no stubs have been added, and no stubs | |
12296 | have changed size. */ | |
58d180e8 AM |
12297 | if (stub_sec == NULL |
12298 | && (htab->glink_eh_frame == NULL | |
12299 | || htab->glink_eh_frame->rawsize == htab->glink_eh_frame->size)) | |
5c3dead3 AM |
12300 | break; |
12301 | ||
721956f4 | 12302 | /* Ask the linker to do its stuff. */ |
e7d1c40c | 12303 | (*htab->params->layout_sections_again) (); |
721956f4 AM |
12304 | } |
12305 | ||
d969d15f AM |
12306 | maybe_strip_output (info, htab->brlt); |
12307 | if (htab->glink_eh_frame != NULL) | |
12308 | maybe_strip_output (info, htab->glink_eh_frame); | |
721956f4 | 12309 | |
b34976b6 | 12310 | return TRUE; |
721956f4 AM |
12311 | } |
12312 | ||
12313 | /* Called after we have determined section placement. If sections | |
805fc799 | 12314 | move, we'll be called again. Provide a value for TOCstart. */ |
721956f4 | 12315 | |
805fc799 | 12316 | bfd_vma |
1c865ab2 | 12317 | ppc64_elf_set_toc (struct bfd_link_info *info, bfd *obfd) |
721956f4 | 12318 | { |
805fc799 AM |
12319 | asection *s; |
12320 | bfd_vma TOCstart; | |
721956f4 | 12321 | |
805fc799 AM |
12322 | /* The TOC consists of sections .got, .toc, .tocbss, .plt in that |
12323 | order. The TOC starts where the first of these sections starts. */ | |
12324 | s = bfd_get_section_by_name (obfd, ".got"); | |
e054468f | 12325 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
805fc799 | 12326 | s = bfd_get_section_by_name (obfd, ".toc"); |
e054468f | 12327 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
805fc799 | 12328 | s = bfd_get_section_by_name (obfd, ".tocbss"); |
e054468f | 12329 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
805fc799 | 12330 | s = bfd_get_section_by_name (obfd, ".plt"); |
e054468f | 12331 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
805fc799 AM |
12332 | { |
12333 | /* This may happen for | |
12334 | o references to TOC base (SYM@toc / TOC[tc0]) without a | |
12335 | .toc directive | |
12336 | o bad linker script | |
12337 | o --gc-sections and empty TOC sections | |
12338 | ||
12339 | FIXME: Warn user? */ | |
12340 | ||
12341 | /* Look for a likely section. We probably won't even be | |
12342 | using TOCstart. */ | |
12343 | for (s = obfd->sections; s != NULL; s = s->next) | |
e054468f AM |
12344 | if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY |
12345 | | SEC_EXCLUDE)) | |
805fc799 AM |
12346 | == (SEC_ALLOC | SEC_SMALL_DATA)) |
12347 | break; | |
721956f4 | 12348 | if (s == NULL) |
805fc799 | 12349 | for (s = obfd->sections; s != NULL; s = s->next) |
e054468f | 12350 | if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_EXCLUDE)) |
805fc799 AM |
12351 | == (SEC_ALLOC | SEC_SMALL_DATA)) |
12352 | break; | |
721956f4 | 12353 | if (s == NULL) |
805fc799 | 12354 | for (s = obfd->sections; s != NULL; s = s->next) |
e054468f AM |
12355 | if ((s->flags & (SEC_ALLOC | SEC_READONLY | SEC_EXCLUDE)) |
12356 | == SEC_ALLOC) | |
805fc799 | 12357 | break; |
721956f4 | 12358 | if (s == NULL) |
805fc799 | 12359 | for (s = obfd->sections; s != NULL; s = s->next) |
e054468f | 12360 | if ((s->flags & (SEC_ALLOC | SEC_EXCLUDE)) == SEC_ALLOC) |
805fc799 AM |
12361 | break; |
12362 | } | |
721956f4 | 12363 | |
805fc799 AM |
12364 | TOCstart = 0; |
12365 | if (s != NULL) | |
12366 | TOCstart = s->output_section->vma + s->output_offset; | |
721956f4 | 12367 | |
1c865ab2 AM |
12368 | _bfd_set_gp_value (obfd, TOCstart); |
12369 | ||
12370 | if (info != NULL && s != NULL && is_ppc64_elf (obfd)) | |
12371 | { | |
12372 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
12373 | ||
12374 | if (htab != NULL | |
12375 | && htab->elf.hgot != NULL) | |
12376 | { | |
1c865ab2 AM |
12377 | htab->elf.hgot->root.u.def.value = TOC_BASE_OFF; |
12378 | htab->elf.hgot->root.u.def.section = s; | |
12379 | } | |
12380 | } | |
805fc799 | 12381 | return TOCstart; |
721956f4 AM |
12382 | } |
12383 | ||
a345bc8d AM |
12384 | /* Called via elf_link_hash_traverse from ppc64_elf_build_stubs to |
12385 | write out any global entry stubs. */ | |
12386 | ||
12387 | static bfd_boolean | |
12388 | build_global_entry_stubs (struct elf_link_hash_entry *h, void *inf) | |
12389 | { | |
12390 | struct bfd_link_info *info; | |
12391 | struct ppc_link_hash_table *htab; | |
12392 | struct plt_entry *pent; | |
12393 | asection *s; | |
12394 | ||
12395 | if (h->root.type == bfd_link_hash_indirect) | |
12396 | return TRUE; | |
12397 | ||
12398 | if (!h->pointer_equality_needed) | |
12399 | return TRUE; | |
12400 | ||
12401 | if (h->def_regular) | |
12402 | return TRUE; | |
12403 | ||
12404 | info = inf; | |
12405 | htab = ppc_hash_table (info); | |
12406 | if (htab == NULL) | |
12407 | return FALSE; | |
12408 | ||
12409 | s = htab->glink; | |
12410 | for (pent = h->plt.plist; pent != NULL; pent = pent->next) | |
12411 | if (pent->plt.offset != (bfd_vma) -1 | |
12412 | && pent->addend == 0) | |
12413 | { | |
12414 | bfd_byte *p; | |
12415 | asection *plt; | |
12416 | bfd_vma off; | |
12417 | ||
a345bc8d | 12418 | p = s->contents + h->root.u.def.value; |
33e44f2e | 12419 | plt = htab->elf.splt; |
a345bc8d AM |
12420 | if (!htab->elf.dynamic_sections_created |
12421 | || h->dynindx == -1) | |
33e44f2e | 12422 | plt = htab->elf.iplt; |
a345bc8d AM |
12423 | off = pent->plt.offset + plt->output_offset + plt->output_section->vma; |
12424 | off -= h->root.u.def.value + s->output_offset + s->output_section->vma; | |
12425 | ||
12426 | if (off + 0x80008000 > 0xffffffff || (off & 3) != 0) | |
12427 | { | |
12428 | info->callbacks->einfo | |
12429 | (_("%P: linkage table error against `%T'\n"), | |
12430 | h->root.root.string); | |
12431 | bfd_set_error (bfd_error_bad_value); | |
12432 | htab->stub_error = TRUE; | |
12433 | } | |
12434 | ||
12435 | if (PPC_HA (off) != 0) | |
12436 | { | |
12437 | bfd_put_32 (s->owner, ADDIS_R12_R12 | PPC_HA (off), p); | |
12438 | p += 4; | |
12439 | } | |
12440 | bfd_put_32 (s->owner, LD_R12_0R12 | PPC_LO (off), p); | |
12441 | p += 4; | |
12442 | bfd_put_32 (s->owner, MTCTR_R12, p); | |
12443 | p += 4; | |
12444 | bfd_put_32 (s->owner, BCTR, p); | |
12445 | break; | |
12446 | } | |
12447 | return TRUE; | |
12448 | } | |
12449 | ||
721956f4 AM |
12450 | /* Build all the stubs associated with the current output file. |
12451 | The stubs are kept in a hash table attached to the main linker | |
12452 | hash table. This function is called via gldelf64ppc_finish. */ | |
12453 | ||
b34976b6 | 12454 | bfd_boolean |
e7d1c40c | 12455 | ppc64_elf_build_stubs (struct bfd_link_info *info, |
4ce794b7 | 12456 | char **stats) |
5d1634d7 AM |
12457 | { |
12458 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
721956f4 | 12459 | asection *stub_sec; |
5d1634d7 | 12460 | bfd_byte *p; |
e717da7e | 12461 | int stub_sec_count = 0; |
5d1634d7 | 12462 | |
4dfe6ac6 NC |
12463 | if (htab == NULL) |
12464 | return FALSE; | |
12465 | ||
eea6121a | 12466 | /* Allocate memory to hold the linker stubs. */ |
e7d1c40c | 12467 | for (stub_sec = htab->params->stub_bfd->sections; |
721956f4 AM |
12468 | stub_sec != NULL; |
12469 | stub_sec = stub_sec->next) | |
eea6121a AM |
12470 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0 |
12471 | && stub_sec->size != 0) | |
e717da7e | 12472 | { |
e7d1c40c | 12473 | stub_sec->contents = bfd_zalloc (htab->params->stub_bfd, stub_sec->size); |
eea6121a AM |
12474 | if (stub_sec->contents == NULL) |
12475 | return FALSE; | |
12476 | /* We want to check that built size is the same as calculated | |
12477 | size. rawsize is a convenient location to use. */ | |
12478 | stub_sec->rawsize = stub_sec->size; | |
12479 | stub_sec->size = 0; | |
e717da7e | 12480 | } |
5d1634d7 | 12481 | |
23eb7e01 | 12482 | if (htab->glink != NULL && htab->glink->size != 0) |
5d1634d7 | 12483 | { |
9f951329 | 12484 | unsigned int indx; |
ad8e1ba5 | 12485 | bfd_vma plt0; |
9f951329 | 12486 | |
721956f4 | 12487 | /* Build the .glink plt call stub. */ |
e7d1c40c | 12488 | if (htab->params->emit_stub_syms) |
97b639ba AM |
12489 | { |
12490 | struct elf_link_hash_entry *h; | |
468392fb AM |
12491 | h = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve", |
12492 | TRUE, FALSE, FALSE); | |
97b639ba AM |
12493 | if (h == NULL) |
12494 | return FALSE; | |
12495 | if (h->root.type == bfd_link_hash_new) | |
12496 | { | |
12497 | h->root.type = bfd_link_hash_defined; | |
12498 | h->root.u.def.section = htab->glink; | |
ee4bf8d2 | 12499 | h->root.u.def.value = 8; |
f5385ebf AM |
12500 | h->ref_regular = 1; |
12501 | h->def_regular = 1; | |
12502 | h->ref_regular_nonweak = 1; | |
12503 | h->forced_local = 1; | |
12504 | h->non_elf = 0; | |
97b639ba AM |
12505 | } |
12506 | } | |
33e44f2e AM |
12507 | plt0 = (htab->elf.splt->output_section->vma |
12508 | + htab->elf.splt->output_offset | |
12509 | - 16); | |
176a0d42 AM |
12510 | if (info->emitrelocations) |
12511 | { | |
12512 | Elf_Internal_Rela *r = get_relocs (htab->glink, 1); | |
12513 | if (r == NULL) | |
12514 | return FALSE; | |
12515 | r->r_offset = (htab->glink->output_offset | |
12516 | + htab->glink->output_section->vma); | |
12517 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL64); | |
12518 | r->r_addend = plt0; | |
12519 | } | |
4ce794b7 | 12520 | p = htab->glink->contents; |
176a0d42 | 12521 | plt0 -= htab->glink->output_section->vma + htab->glink->output_offset; |
ee4bf8d2 AM |
12522 | bfd_put_64 (htab->glink->owner, plt0, p); |
12523 | p += 8; | |
b9e5796b AM |
12524 | if (htab->opd_abi) |
12525 | { | |
12526 | bfd_put_32 (htab->glink->owner, MFLR_R12, p); | |
12527 | p += 4; | |
12528 | bfd_put_32 (htab->glink->owner, BCL_20_31, p); | |
12529 | p += 4; | |
12530 | bfd_put_32 (htab->glink->owner, MFLR_R11, p); | |
12531 | p += 4; | |
12532 | bfd_put_32 (htab->glink->owner, LD_R2_0R11 | (-16 & 0xfffc), p); | |
12533 | p += 4; | |
12534 | bfd_put_32 (htab->glink->owner, MTLR_R12, p); | |
12535 | p += 4; | |
12536 | bfd_put_32 (htab->glink->owner, ADD_R11_R2_R11, p); | |
12537 | p += 4; | |
12538 | bfd_put_32 (htab->glink->owner, LD_R12_0R11, p); | |
12539 | p += 4; | |
12540 | bfd_put_32 (htab->glink->owner, LD_R2_0R11 | 8, p); | |
12541 | p += 4; | |
12542 | bfd_put_32 (htab->glink->owner, MTCTR_R12, p); | |
12543 | p += 4; | |
12544 | bfd_put_32 (htab->glink->owner, LD_R11_0R11 | 16, p); | |
12545 | p += 4; | |
12546 | } | |
12547 | else | |
12548 | { | |
12549 | bfd_put_32 (htab->glink->owner, MFLR_R0, p); | |
12550 | p += 4; | |
12551 | bfd_put_32 (htab->glink->owner, BCL_20_31, p); | |
12552 | p += 4; | |
12553 | bfd_put_32 (htab->glink->owner, MFLR_R11, p); | |
12554 | p += 4; | |
12555 | bfd_put_32 (htab->glink->owner, LD_R2_0R11 | (-16 & 0xfffc), p); | |
12556 | p += 4; | |
12557 | bfd_put_32 (htab->glink->owner, MTLR_R0, p); | |
12558 | p += 4; | |
12559 | bfd_put_32 (htab->glink->owner, SUB_R12_R12_R11, p); | |
12560 | p += 4; | |
12561 | bfd_put_32 (htab->glink->owner, ADD_R11_R2_R11, p); | |
12562 | p += 4; | |
12563 | bfd_put_32 (htab->glink->owner, ADDI_R0_R12 | (-48 & 0xffff), p); | |
12564 | p += 4; | |
12565 | bfd_put_32 (htab->glink->owner, LD_R12_0R11, p); | |
12566 | p += 4; | |
12567 | bfd_put_32 (htab->glink->owner, SRDI_R0_R0_2, p); | |
12568 | p += 4; | |
12569 | bfd_put_32 (htab->glink->owner, MTCTR_R12, p); | |
12570 | p += 4; | |
12571 | bfd_put_32 (htab->glink->owner, LD_R11_0R11 | 8, p); | |
12572 | p += 4; | |
12573 | } | |
4ce794b7 | 12574 | bfd_put_32 (htab->glink->owner, BCTR, p); |
ad8e1ba5 | 12575 | p += 4; |
ee4bf8d2 AM |
12576 | while (p - htab->glink->contents < GLINK_CALL_STUB_SIZE) |
12577 | { | |
12578 | bfd_put_32 (htab->glink->owner, NOP, p); | |
12579 | p += 4; | |
12580 | } | |
ad8e1ba5 | 12581 | |
9f951329 AM |
12582 | /* Build the .glink lazy link call stubs. */ |
12583 | indx = 0; | |
a345bc8d | 12584 | while (p < htab->glink->contents + htab->glink->rawsize) |
9f951329 | 12585 | { |
b9e5796b | 12586 | if (htab->opd_abi) |
9f951329 | 12587 | { |
b9e5796b AM |
12588 | if (indx < 0x8000) |
12589 | { | |
12590 | bfd_put_32 (htab->glink->owner, LI_R0_0 | indx, p); | |
12591 | p += 4; | |
12592 | } | |
12593 | else | |
12594 | { | |
12595 | bfd_put_32 (htab->glink->owner, LIS_R0_0 | PPC_HI (indx), p); | |
12596 | p += 4; | |
12597 | bfd_put_32 (htab->glink->owner, ORI_R0_R0_0 | PPC_LO (indx), | |
12598 | p); | |
12599 | p += 4; | |
12600 | } | |
9f951329 | 12601 | } |
4ce794b7 | 12602 | bfd_put_32 (htab->glink->owner, |
ee4bf8d2 | 12603 | B_DOT | ((htab->glink->contents - p + 8) & 0x3fffffc), p); |
a16d5acb | 12604 | indx++; |
9f951329 AM |
12605 | p += 4; |
12606 | } | |
a345bc8d AM |
12607 | |
12608 | /* Build .glink global entry stubs. */ | |
12609 | if (htab->glink->size > htab->glink->rawsize) | |
afe397ea | 12610 | elf_link_hash_traverse (&htab->elf, build_global_entry_stubs, info); |
5d1634d7 | 12611 | } |
5d1634d7 | 12612 | |
eea6121a | 12613 | if (htab->brlt->size != 0) |
721956f4 | 12614 | { |
4ce794b7 | 12615 | htab->brlt->contents = bfd_zalloc (htab->brlt->owner, |
eea6121a | 12616 | htab->brlt->size); |
4ce794b7 | 12617 | if (htab->brlt->contents == NULL) |
b34976b6 | 12618 | return FALSE; |
721956f4 | 12619 | } |
ee75fd95 | 12620 | if (htab->relbrlt != NULL && htab->relbrlt->size != 0) |
63bc6f6c AM |
12621 | { |
12622 | htab->relbrlt->contents = bfd_zalloc (htab->relbrlt->owner, | |
eea6121a | 12623 | htab->relbrlt->size); |
63bc6f6c AM |
12624 | if (htab->relbrlt->contents == NULL) |
12625 | return FALSE; | |
12626 | } | |
5d1634d7 | 12627 | |
58d180e8 AM |
12628 | if (htab->glink_eh_frame != NULL |
12629 | && htab->glink_eh_frame->size != 0) | |
12630 | { | |
12631 | bfd_vma val; | |
4bbe044a AM |
12632 | bfd_byte *last_fde; |
12633 | size_t last_fde_len, size, align, pad; | |
58d180e8 AM |
12634 | |
12635 | p = bfd_zalloc (htab->glink_eh_frame->owner, htab->glink_eh_frame->size); | |
12636 | if (p == NULL) | |
12637 | return FALSE; | |
12638 | htab->glink_eh_frame->contents = p; | |
4bbe044a | 12639 | last_fde = p; |
58d180e8 AM |
12640 | |
12641 | htab->glink_eh_frame->rawsize = htab->glink_eh_frame->size; | |
12642 | ||
12643 | memcpy (p, glink_eh_frame_cie, sizeof (glink_eh_frame_cie)); | |
12644 | /* CIE length (rewrite in case little-endian). */ | |
4bbe044a AM |
12645 | last_fde_len = sizeof (glink_eh_frame_cie) - 4; |
12646 | bfd_put_32 (htab->elf.dynobj, last_fde_len, p); | |
58d180e8 AM |
12647 | p += sizeof (glink_eh_frame_cie); |
12648 | ||
e7d1c40c | 12649 | for (stub_sec = htab->params->stub_bfd->sections; |
58d180e8 AM |
12650 | stub_sec != NULL; |
12651 | stub_sec = stub_sec->next) | |
12652 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) | |
12653 | { | |
4bbe044a AM |
12654 | last_fde = p; |
12655 | last_fde_len = 16; | |
58d180e8 AM |
12656 | /* FDE length. */ |
12657 | bfd_put_32 (htab->elf.dynobj, 16, p); | |
12658 | p += 4; | |
12659 | /* CIE pointer. */ | |
12660 | val = p - htab->glink_eh_frame->contents; | |
12661 | bfd_put_32 (htab->elf.dynobj, val, p); | |
12662 | p += 4; | |
12663 | /* Offset to stub section. */ | |
12664 | val = (stub_sec->output_section->vma | |
12665 | + stub_sec->output_offset); | |
12666 | val -= (htab->glink_eh_frame->output_section->vma | |
12667 | + htab->glink_eh_frame->output_offset); | |
12668 | val -= p - htab->glink_eh_frame->contents; | |
12669 | if (val + 0x80000000 > 0xffffffff) | |
12670 | { | |
12671 | info->callbacks->einfo | |
8de848d8 | 12672 | (_("%P: %s offset too large for .eh_frame sdata4 encoding"), |
58d180e8 AM |
12673 | stub_sec->name); |
12674 | return FALSE; | |
12675 | } | |
12676 | bfd_put_32 (htab->elf.dynobj, val, p); | |
12677 | p += 4; | |
12678 | /* stub section size. */ | |
12679 | bfd_put_32 (htab->elf.dynobj, stub_sec->rawsize, p); | |
12680 | p += 4; | |
12681 | /* Augmentation. */ | |
12682 | p += 1; | |
12683 | /* Pad. */ | |
12684 | p += 3; | |
12685 | } | |
12686 | if (htab->glink != NULL && htab->glink->size != 0) | |
12687 | { | |
4bbe044a AM |
12688 | last_fde = p; |
12689 | last_fde_len = 20; | |
58d180e8 AM |
12690 | /* FDE length. */ |
12691 | bfd_put_32 (htab->elf.dynobj, 20, p); | |
12692 | p += 4; | |
12693 | /* CIE pointer. */ | |
12694 | val = p - htab->glink_eh_frame->contents; | |
12695 | bfd_put_32 (htab->elf.dynobj, val, p); | |
12696 | p += 4; | |
12697 | /* Offset to .glink. */ | |
12698 | val = (htab->glink->output_section->vma | |
12699 | + htab->glink->output_offset | |
12700 | + 8); | |
12701 | val -= (htab->glink_eh_frame->output_section->vma | |
12702 | + htab->glink_eh_frame->output_offset); | |
12703 | val -= p - htab->glink_eh_frame->contents; | |
12704 | if (val + 0x80000000 > 0xffffffff) | |
12705 | { | |
12706 | info->callbacks->einfo | |
8de848d8 | 12707 | (_("%P: %s offset too large for .eh_frame sdata4 encoding"), |
58d180e8 AM |
12708 | htab->glink->name); |
12709 | return FALSE; | |
12710 | } | |
12711 | bfd_put_32 (htab->elf.dynobj, val, p); | |
12712 | p += 4; | |
12713 | /* .glink size. */ | |
a345bc8d | 12714 | bfd_put_32 (htab->elf.dynobj, htab->glink->size - 8, p); |
58d180e8 AM |
12715 | p += 4; |
12716 | /* Augmentation. */ | |
12717 | p += 1; | |
12718 | ||
12719 | *p++ = DW_CFA_advance_loc + 1; | |
12720 | *p++ = DW_CFA_register; | |
12721 | *p++ = 65; | |
12722 | *p++ = 12; | |
12723 | *p++ = DW_CFA_advance_loc + 4; | |
12724 | *p++ = DW_CFA_restore_extended; | |
12725 | *p++ = 65; | |
12726 | } | |
4bbe044a AM |
12727 | /* Subsume any padding into the last FDE if user .eh_frame |
12728 | sections are aligned more than glink_eh_frame. Otherwise any | |
12729 | zero padding will be seen as a terminator. */ | |
12730 | size = p - htab->glink_eh_frame->contents; | |
12731 | align = 1; | |
12732 | align <<= htab->glink_eh_frame->output_section->alignment_power; | |
12733 | align -= 1; | |
12734 | pad = ((size + align) & ~align) - size; | |
12735 | htab->glink_eh_frame->size = size + pad; | |
12736 | bfd_put_32 (htab->elf.dynobj, last_fde_len + pad, last_fde); | |
58d180e8 AM |
12737 | } |
12738 | ||
721956f4 AM |
12739 | /* Build the stubs as directed by the stub hash table. */ |
12740 | bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info); | |
5d1634d7 | 12741 | |
aa8a7074 AM |
12742 | if (htab->relbrlt != NULL) |
12743 | htab->relbrlt->reloc_count = 0; | |
12744 | ||
e7d1c40c AM |
12745 | if (htab->params->plt_stub_align != 0) |
12746 | for (stub_sec = htab->params->stub_bfd->sections; | |
794e51c0 AM |
12747 | stub_sec != NULL; |
12748 | stub_sec = stub_sec->next) | |
12749 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) | |
e7d1c40c AM |
12750 | stub_sec->size = ((stub_sec->size |
12751 | + (1 << htab->params->plt_stub_align) - 1) | |
12752 | & (-1 << htab->params->plt_stub_align)); | |
794e51c0 | 12753 | |
e7d1c40c | 12754 | for (stub_sec = htab->params->stub_bfd->sections; |
721956f4 AM |
12755 | stub_sec != NULL; |
12756 | stub_sec = stub_sec->next) | |
e717da7e AM |
12757 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) |
12758 | { | |
12759 | stub_sec_count += 1; | |
eea6121a | 12760 | if (stub_sec->rawsize != stub_sec->size) |
e717da7e AM |
12761 | break; |
12762 | } | |
5d1634d7 | 12763 | |
721956f4 | 12764 | if (stub_sec != NULL |
58d180e8 AM |
12765 | || (htab->glink_eh_frame != NULL |
12766 | && htab->glink_eh_frame->rawsize != htab->glink_eh_frame->size)) | |
5d1634d7 | 12767 | { |
b34976b6 | 12768 | htab->stub_error = TRUE; |
8de848d8 | 12769 | info->callbacks->einfo (_("%P: stubs don't match calculated size\n")); |
5d1634d7 | 12770 | } |
721956f4 | 12771 | |
d2a300cf AM |
12772 | if (htab->stub_error) |
12773 | return FALSE; | |
12774 | ||
12775 | if (stats != NULL) | |
12776 | { | |
12777 | *stats = bfd_malloc (500); | |
12778 | if (*stats == NULL) | |
12779 | return FALSE; | |
12780 | ||
ee75fd95 | 12781 | sprintf (*stats, _("linker stubs in %u group%s\n" |
d2a300cf AM |
12782 | " branch %lu\n" |
12783 | " toc adjust %lu\n" | |
12784 | " long branch %lu\n" | |
12785 | " long toc adj %lu\n" | |
794e51c0 AM |
12786 | " plt call %lu\n" |
12787 | " plt call toc %lu"), | |
e717da7e | 12788 | stub_sec_count, |
ee75fd95 | 12789 | stub_sec_count == 1 ? "" : "s", |
4ce794b7 AM |
12790 | htab->stub_count[ppc_stub_long_branch - 1], |
12791 | htab->stub_count[ppc_stub_long_branch_r2off - 1], | |
12792 | htab->stub_count[ppc_stub_plt_branch - 1], | |
12793 | htab->stub_count[ppc_stub_plt_branch_r2off - 1], | |
794e51c0 AM |
12794 | htab->stub_count[ppc_stub_plt_call - 1], |
12795 | htab->stub_count[ppc_stub_plt_call_r2save - 1]); | |
d2a300cf AM |
12796 | } |
12797 | return TRUE; | |
5bd4f169 AM |
12798 | } |
12799 | ||
99877b66 AM |
12800 | /* This function undoes the changes made by add_symbol_adjust. */ |
12801 | ||
12802 | static bfd_boolean | |
12803 | undo_symbol_twiddle (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED) | |
12804 | { | |
12805 | struct ppc_link_hash_entry *eh; | |
12806 | ||
12807 | if (h->root.type == bfd_link_hash_indirect) | |
12808 | return TRUE; | |
12809 | ||
99877b66 AM |
12810 | eh = (struct ppc_link_hash_entry *) h; |
12811 | if (eh->elf.root.type != bfd_link_hash_undefweak || !eh->was_undefined) | |
12812 | return TRUE; | |
12813 | ||
12814 | eh->elf.root.type = bfd_link_hash_undefined; | |
12815 | return TRUE; | |
12816 | } | |
12817 | ||
12818 | void | |
12819 | ppc64_elf_restore_symbols (struct bfd_link_info *info) | |
12820 | { | |
12821 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
12822 | |
12823 | if (htab != NULL) | |
12824 | elf_link_hash_traverse (&htab->elf, undo_symbol_twiddle, info); | |
99877b66 AM |
12825 | } |
12826 | ||
60124e18 AM |
12827 | /* What to do when ld finds relocations against symbols defined in |
12828 | discarded sections. */ | |
12829 | ||
12830 | static unsigned int | |
12831 | ppc64_elf_action_discarded (asection *sec) | |
12832 | { | |
12833 | if (strcmp (".opd", sec->name) == 0) | |
12834 | return 0; | |
12835 | ||
12836 | if (strcmp (".toc", sec->name) == 0) | |
12837 | return 0; | |
12838 | ||
bce50a28 JJ |
12839 | if (strcmp (".toc1", sec->name) == 0) |
12840 | return 0; | |
12841 | ||
60124e18 AM |
12842 | return _bfd_elf_default_action_discarded (sec); |
12843 | } | |
12844 | ||
5bd4f169 AM |
12845 | /* The RELOCATE_SECTION function is called by the ELF backend linker |
12846 | to handle the relocations for a section. | |
12847 | ||
12848 | The relocs are always passed as Rela structures; if the section | |
12849 | actually uses Rel structures, the r_addend field will always be | |
12850 | zero. | |
12851 | ||
12852 | This function is responsible for adjust the section contents as | |
12853 | necessary, and (if using Rela relocs and generating a | |
1049f94e | 12854 | relocatable output file) adjusting the reloc addend as |
5bd4f169 AM |
12855 | necessary. |
12856 | ||
12857 | This function does not have to worry about setting the reloc | |
12858 | address or the reloc symbol index. | |
12859 | ||
12860 | LOCAL_SYMS is a pointer to the swapped in local symbols. | |
12861 | ||
12862 | LOCAL_SECTIONS is an array giving the section in the input file | |
12863 | corresponding to the st_shndx field of each local symbol. | |
12864 | ||
12865 | The global hash table entry for the global symbols can be found | |
12866 | via elf_sym_hashes (input_bfd). | |
12867 | ||
1049f94e | 12868 | When generating relocatable output, this function must handle |
5bd4f169 AM |
12869 | STB_LOCAL/STT_SECTION symbols specially. The output symbol is |
12870 | going to be the section symbol corresponding to the output | |
12871 | section, which means that the addend must be adjusted | |
12872 | accordingly. */ | |
12873 | ||
b34976b6 | 12874 | static bfd_boolean |
4ce794b7 AM |
12875 | ppc64_elf_relocate_section (bfd *output_bfd, |
12876 | struct bfd_link_info *info, | |
12877 | bfd *input_bfd, | |
12878 | asection *input_section, | |
12879 | bfd_byte *contents, | |
12880 | Elf_Internal_Rela *relocs, | |
12881 | Elf_Internal_Sym *local_syms, | |
12882 | asection **local_sections) | |
5bd4f169 | 12883 | { |
65f38f15 | 12884 | struct ppc_link_hash_table *htab; |
5bd4f169 AM |
12885 | Elf_Internal_Shdr *symtab_hdr; |
12886 | struct elf_link_hash_entry **sym_hashes; | |
5bd4f169 AM |
12887 | Elf_Internal_Rela *rel; |
12888 | Elf_Internal_Rela *relend; | |
411e1bfb AM |
12889 | Elf_Internal_Rela outrel; |
12890 | bfd_byte *loc; | |
411e1bfb | 12891 | struct got_entry **local_got_ents; |
5bd4f169 | 12892 | bfd_vma TOCstart; |
b34976b6 AM |
12893 | bfd_boolean ret = TRUE; |
12894 | bfd_boolean is_opd; | |
794e51c0 AM |
12895 | /* Assume 'at' branch hints. */ |
12896 | bfd_boolean is_isa_v2 = TRUE; | |
4fe5ca5b | 12897 | bfd_vma d_offset = (bfd_big_endian (output_bfd) ? 2 : 0); |
5bd4f169 | 12898 | |
65f38f15 | 12899 | /* Initialize howto table if needed. */ |
5bd4f169 | 12900 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) |
5bd4f169 AM |
12901 | ppc_howto_init (); |
12902 | ||
65f38f15 | 12903 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
12904 | if (htab == NULL) |
12905 | return FALSE; | |
ee75fd95 AM |
12906 | |
12907 | /* Don't relocate stub sections. */ | |
e7d1c40c | 12908 | if (input_section->owner == htab->params->stub_bfd) |
ee75fd95 AM |
12909 | return TRUE; |
12910 | ||
0c8d6e5c | 12911 | BFD_ASSERT (is_ppc64_elf (input_bfd)); |
0ffa91dd | 12912 | |
411e1bfb | 12913 | local_got_ents = elf_local_got_ents (input_bfd); |
5bd4f169 | 12914 | TOCstart = elf_gp (output_bfd); |
0ffa91dd | 12915 | symtab_hdr = &elf_symtab_hdr (input_bfd); |
5bd4f169 | 12916 | sym_hashes = elf_sym_hashes (input_bfd); |
7c8fe5c4 | 12917 | is_opd = ppc64_elf_section_data (input_section)->sec_type == sec_opd; |
65f38f15 | 12918 | |
5bd4f169 AM |
12919 | rel = relocs; |
12920 | relend = relocs + input_section->reloc_count; | |
12921 | for (; rel < relend; rel++) | |
12922 | { | |
04c9666a | 12923 | enum elf_ppc64_reloc_type r_type; |
31c76678 | 12924 | bfd_vma addend; |
5bd4f169 AM |
12925 | bfd_reloc_status_type r; |
12926 | Elf_Internal_Sym *sym; | |
12927 | asection *sec; | |
039b3fef AM |
12928 | struct elf_link_hash_entry *h_elf; |
12929 | struct ppc_link_hash_entry *h; | |
12930 | struct ppc_link_hash_entry *fdh; | |
5bd4f169 | 12931 | const char *sym_name; |
0d4792f7 | 12932 | unsigned long r_symndx, toc_symndx; |
3a71aa26 | 12933 | bfd_vma toc_addend; |
f961d9dd AM |
12934 | unsigned char tls_mask, tls_gd, tls_type; |
12935 | unsigned char sym_type; | |
5bd4f169 | 12936 | bfd_vma relocation; |
b34976b6 AM |
12937 | bfd_boolean unresolved_reloc; |
12938 | bfd_boolean warned; | |
bc30df16 | 12939 | enum { DEST_NORMAL, DEST_OPD, DEST_STUB } reloc_dest; |
67f0cbdb | 12940 | unsigned int insn; |
e11840f9 | 12941 | unsigned int mask; |
721956f4 AM |
12942 | struct ppc_stub_hash_entry *stub_entry; |
12943 | bfd_vma max_br_offset; | |
12944 | bfd_vma from; | |
31c76678 | 12945 | const Elf_Internal_Rela orig_rel = *rel; |
5bd4f169 | 12946 | |
4ce794b7 | 12947 | r_type = ELF64_R_TYPE (rel->r_info); |
5bd4f169 | 12948 | r_symndx = ELF64_R_SYM (rel->r_info); |
ee87f2da AM |
12949 | |
12950 | /* For old style R_PPC64_TOC relocs with a zero symbol, use the | |
12951 | symbol of the previous ADDR64 reloc. The symbol gives us the | |
12952 | proper TOC base to use. */ | |
12953 | if (rel->r_info == ELF64_R_INFO (0, R_PPC64_TOC) | |
12954 | && rel != relocs | |
12955 | && ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_ADDR64 | |
12956 | && is_opd) | |
12957 | r_symndx = ELF64_R_SYM (rel[-1].r_info); | |
12958 | ||
4ce794b7 AM |
12959 | sym = NULL; |
12960 | sec = NULL; | |
039b3fef | 12961 | h_elf = NULL; |
4ce794b7 | 12962 | sym_name = NULL; |
b34976b6 AM |
12963 | unresolved_reloc = FALSE; |
12964 | warned = FALSE; | |
65f38f15 | 12965 | |
0b13192e | 12966 | if (r_symndx < symtab_hdr->sh_info) |
5bd4f169 AM |
12967 | { |
12968 | /* It's a local symbol. */ | |
74f0fb50 | 12969 | struct _opd_sec_data *opd; |
4025353c | 12970 | |
5bd4f169 AM |
12971 | sym = local_syms + r_symndx; |
12972 | sec = local_sections[r_symndx]; | |
26c61ae5 | 12973 | sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec); |
0d4792f7 | 12974 | sym_type = ELF64_ST_TYPE (sym->st_info); |
8517fae7 | 12975 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); |
74f0fb50 AM |
12976 | opd = get_opd_info (sec); |
12977 | if (opd != NULL && opd->adjust != NULL) | |
1e2f5b6e | 12978 | { |
74f0fb50 | 12979 | long adjust = opd->adjust[(sym->st_value + rel->r_addend) / 8]; |
4025353c AM |
12980 | if (adjust == -1) |
12981 | relocation = 0; | |
12982 | else | |
4cc603a5 AM |
12983 | { |
12984 | /* If this is a relocation against the opd section sym | |
12985 | and we have edited .opd, adjust the reloc addend so | |
12986 | that ld -r and ld --emit-relocs output is correct. | |
12987 | If it is a reloc against some other .opd symbol, | |
12988 | then the symbol value will be adjusted later. */ | |
12989 | if (ELF_ST_TYPE (sym->st_info) == STT_SECTION) | |
12990 | rel->r_addend += adjust; | |
12991 | else | |
12992 | relocation += adjust; | |
12993 | } | |
1e2f5b6e | 12994 | } |
5bd4f169 AM |
12995 | } |
12996 | else | |
12997 | { | |
62d887d4 L |
12998 | bfd_boolean ignored; |
12999 | ||
b2a8e766 AM |
13000 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
13001 | r_symndx, symtab_hdr, sym_hashes, | |
039b3fef | 13002 | h_elf, sec, relocation, |
62d887d4 | 13003 | unresolved_reloc, warned, ignored); |
039b3fef AM |
13004 | sym_name = h_elf->root.root.string; |
13005 | sym_type = h_elf->type; | |
b69fdb4e AM |
13006 | if (sec != NULL |
13007 | && sec->owner == output_bfd | |
13008 | && strcmp (sec->name, ".opd") == 0) | |
13009 | { | |
13010 | /* This is a symbol defined in a linker script. All | |
13011 | such are defined in output sections, even those | |
13012 | defined by simple assignment from a symbol defined in | |
13013 | an input section. Transfer the symbol to an | |
13014 | appropriate input .opd section, so that a branch to | |
13015 | this symbol will be mapped to the location specified | |
13016 | by the opd entry. */ | |
13017 | struct bfd_link_order *lo; | |
13018 | for (lo = sec->map_head.link_order; lo != NULL; lo = lo->next) | |
13019 | if (lo->type == bfd_indirect_link_order) | |
13020 | { | |
13021 | asection *isec = lo->u.indirect.section; | |
13022 | if (h_elf->root.u.def.value >= isec->output_offset | |
13023 | && h_elf->root.u.def.value < (isec->output_offset | |
13024 | + isec->size)) | |
13025 | { | |
13026 | h_elf->root.u.def.value -= isec->output_offset; | |
13027 | h_elf->root.u.def.section = isec; | |
13028 | sec = isec; | |
13029 | break; | |
13030 | } | |
13031 | } | |
13032 | } | |
5bd4f169 | 13033 | } |
039b3fef | 13034 | h = (struct ppc_link_hash_entry *) h_elf; |
5bd4f169 | 13035 | |
dbaa2011 | 13036 | if (sec != NULL && discarded_section (sec)) |
e4067dbb | 13037 | RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, |
545fd46b MR |
13038 | rel, 1, relend, |
13039 | ppc64_elf_howto_table[r_type], 0, | |
e4067dbb | 13040 | contents); |
ab96bf03 AM |
13041 | |
13042 | if (info->relocatable) | |
13043 | continue; | |
13044 | ||
f40da81b AM |
13045 | if (h != NULL && &h->elf == htab->elf.hgot) |
13046 | { | |
13047 | relocation = (TOCstart | |
13048 | + htab->stub_group[input_section->id].toc_off); | |
13049 | sec = bfd_abs_section_ptr; | |
13050 | unresolved_reloc = FALSE; | |
13051 | } | |
13052 | ||
951fd09b AM |
13053 | /* TLS optimizations. Replace instruction sequences and relocs |
13054 | based on information we collected in tls_optimize. We edit | |
13055 | RELOCS so that --emit-relocs will output something sensible | |
13056 | for the final instruction stream. */ | |
13057 | tls_mask = 0; | |
13058 | tls_gd = 0; | |
0d4792f7 | 13059 | toc_symndx = 0; |
727fc41e AM |
13060 | if (h != NULL) |
13061 | tls_mask = h->tls_mask; | |
13062 | else if (local_got_ents != NULL) | |
411e1bfb | 13063 | { |
e054468f AM |
13064 | struct plt_entry **local_plt = (struct plt_entry **) |
13065 | (local_got_ents + symtab_hdr->sh_info); | |
f961d9dd | 13066 | unsigned char *lgot_masks = (unsigned char *) |
e054468f | 13067 | (local_plt + symtab_hdr->sh_info); |
727fc41e AM |
13068 | tls_mask = lgot_masks[r_symndx]; |
13069 | } | |
13070 | if (tls_mask == 0 | |
13071 | && (r_type == R_PPC64_TLS | |
13072 | || r_type == R_PPC64_TLSGD | |
13073 | || r_type == R_PPC64_TLSLD)) | |
13074 | { | |
13075 | /* Check for toc tls entries. */ | |
f961d9dd | 13076 | unsigned char *toc_tls; |
0d4792f7 | 13077 | |
727fc41e AM |
13078 | if (!get_tls_mask (&toc_tls, &toc_symndx, &toc_addend, |
13079 | &local_syms, rel, input_bfd)) | |
13080 | return FALSE; | |
0d4792f7 | 13081 | |
727fc41e AM |
13082 | if (toc_tls) |
13083 | tls_mask = *toc_tls; | |
0d4792f7 AM |
13084 | } |
13085 | ||
13086 | /* Check that tls relocs are used with tls syms, and non-tls | |
13087 | relocs are used with non-tls syms. */ | |
cf35638d | 13088 | if (r_symndx != STN_UNDEF |
0d4792f7 AM |
13089 | && r_type != R_PPC64_NONE |
13090 | && (h == NULL | |
039b3fef AM |
13091 | || h->elf.root.type == bfd_link_hash_defined |
13092 | || h->elf.root.type == bfd_link_hash_defweak) | |
1d483afe AM |
13093 | && (IS_PPC64_TLS_RELOC (r_type) |
13094 | != (sym_type == STT_TLS | |
13095 | || (sym_type == STT_SECTION | |
13096 | && (sec->flags & SEC_THREAD_LOCAL) != 0)))) | |
0d4792f7 | 13097 | { |
727fc41e AM |
13098 | if (tls_mask != 0 |
13099 | && (r_type == R_PPC64_TLS | |
13100 | || r_type == R_PPC64_TLSGD | |
13101 | || r_type == R_PPC64_TLSLD)) | |
0d4792f7 AM |
13102 | /* R_PPC64_TLS is OK against a symbol in the TOC. */ |
13103 | ; | |
13104 | else | |
25f53a85 | 13105 | info->callbacks->einfo |
1d483afe | 13106 | (!IS_PPC64_TLS_RELOC (r_type) |
bc30df16 AM |
13107 | ? _("%P: %H: %s used with TLS symbol `%T'\n") |
13108 | : _("%P: %H: %s used with non-TLS symbol `%T'\n"), | |
25f53a85 | 13109 | input_bfd, input_section, rel->r_offset, |
0d4792f7 AM |
13110 | ppc64_elf_howto_table[r_type]->name, |
13111 | sym_name); | |
411e1bfb AM |
13112 | } |
13113 | ||
13114 | /* Ensure reloc mapping code below stays sane. */ | |
13115 | if (R_PPC64_TOC16_LO_DS != R_PPC64_TOC16_DS + 1 | |
13116 | || R_PPC64_TOC16_LO != R_PPC64_TOC16 + 1 | |
13117 | || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TLSGD16 & 3) | |
13118 | || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TLSGD16_LO & 3) | |
13119 | || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TLSGD16_HI & 3) | |
13120 | || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TLSGD16_HA & 3) | |
13121 | || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TPREL16_DS & 3) | |
13122 | || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TPREL16_LO_DS & 3) | |
13123 | || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TPREL16_HI & 3) | |
13124 | || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TPREL16_HA & 3)) | |
13125 | abort (); | |
0d4792f7 | 13126 | |
411e1bfb AM |
13127 | switch (r_type) |
13128 | { | |
13129 | default: | |
411e1bfb AM |
13130 | break; |
13131 | ||
ba761f19 AM |
13132 | case R_PPC64_LO_DS_OPT: |
13133 | insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset); | |
13134 | if ((insn & (0x3f << 26)) != 58u << 26) | |
13135 | abort (); | |
13136 | insn += (14u << 26) - (58u << 26); | |
13137 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset); | |
13138 | r_type = R_PPC64_TOC16_LO; | |
13139 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
13140 | break; | |
13141 | ||
411e1bfb AM |
13142 | case R_PPC64_TOC16: |
13143 | case R_PPC64_TOC16_LO: | |
13144 | case R_PPC64_TOC16_DS: | |
13145 | case R_PPC64_TOC16_LO_DS: | |
411e1bfb AM |
13146 | { |
13147 | /* Check for toc tls entries. */ | |
f961d9dd | 13148 | unsigned char *toc_tls; |
951fd09b | 13149 | int retval; |
411e1bfb | 13150 | |
3a71aa26 AM |
13151 | retval = get_tls_mask (&toc_tls, &toc_symndx, &toc_addend, |
13152 | &local_syms, rel, input_bfd); | |
951fd09b | 13153 | if (retval == 0) |
411e1bfb AM |
13154 | return FALSE; |
13155 | ||
13156 | if (toc_tls) | |
13157 | { | |
951fd09b | 13158 | tls_mask = *toc_tls; |
411e1bfb AM |
13159 | if (r_type == R_PPC64_TOC16_DS |
13160 | || r_type == R_PPC64_TOC16_LO_DS) | |
81407a69 AM |
13161 | { |
13162 | if (tls_mask != 0 | |
13163 | && (tls_mask & (TLS_DTPREL | TLS_TPREL)) == 0) | |
13164 | goto toctprel; | |
13165 | } | |
411e1bfb | 13166 | else |
951fd09b AM |
13167 | { |
13168 | /* If we found a GD reloc pair, then we might be | |
13169 | doing a GD->IE transition. */ | |
13170 | if (retval == 2) | |
13171 | { | |
13172 | tls_gd = TLS_TPRELGD; | |
13173 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
102890f0 | 13174 | goto tls_ldgd_opt; |
951fd09b AM |
13175 | } |
13176 | else if (retval == 3) | |
13177 | { | |
13178 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) | |
102890f0 | 13179 | goto tls_ldgd_opt; |
951fd09b AM |
13180 | } |
13181 | } | |
411e1bfb AM |
13182 | } |
13183 | } | |
13184 | break; | |
13185 | ||
9d6ded02 AM |
13186 | case R_PPC64_GOT_TPREL16_HI: |
13187 | case R_PPC64_GOT_TPREL16_HA: | |
13188 | if (tls_mask != 0 | |
13189 | && (tls_mask & TLS_TPREL) == 0) | |
13190 | { | |
13191 | rel->r_offset -= d_offset; | |
13192 | bfd_put_32 (output_bfd, NOP, contents + rel->r_offset); | |
13193 | r_type = R_PPC64_NONE; | |
13194 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
13195 | } | |
13196 | break; | |
13197 | ||
411e1bfb AM |
13198 | case R_PPC64_GOT_TPREL16_DS: |
13199 | case R_PPC64_GOT_TPREL16_LO_DS: | |
951fd09b AM |
13200 | if (tls_mask != 0 |
13201 | && (tls_mask & TLS_TPREL) == 0) | |
411e1bfb | 13202 | { |
81407a69 | 13203 | toctprel: |
4fe5ca5b | 13204 | insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset); |
411e1bfb AM |
13205 | insn &= 31 << 21; |
13206 | insn |= 0x3c0d0000; /* addis 0,13,0 */ | |
4fe5ca5b | 13207 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset); |
411e1bfb | 13208 | r_type = R_PPC64_TPREL16_HA; |
0d4792f7 AM |
13209 | if (toc_symndx != 0) |
13210 | { | |
13211 | rel->r_info = ELF64_R_INFO (toc_symndx, r_type); | |
3a71aa26 | 13212 | rel->r_addend = toc_addend; |
0d4792f7 AM |
13213 | /* We changed the symbol. Start over in order to |
13214 | get h, sym, sec etc. right. */ | |
13215 | rel--; | |
13216 | continue; | |
13217 | } | |
13218 | else | |
13219 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
411e1bfb AM |
13220 | } |
13221 | break; | |
13222 | ||
13223 | case R_PPC64_TLS: | |
951fd09b AM |
13224 | if (tls_mask != 0 |
13225 | && (tls_mask & TLS_TPREL) == 0) | |
411e1bfb | 13226 | { |
411e1bfb | 13227 | insn = bfd_get_32 (output_bfd, contents + rel->r_offset); |
2d0f3896 AM |
13228 | insn = _bfd_elf_ppc_at_tls_transform (insn, 13); |
13229 | if (insn == 0) | |
411e1bfb | 13230 | abort (); |
411e1bfb | 13231 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset); |
411e1bfb | 13232 | /* Was PPC64_TLS which sits on insn boundary, now |
4fe5ca5b GM |
13233 | PPC64_TPREL16_LO which is at low-order half-word. */ |
13234 | rel->r_offset += d_offset; | |
0d4792f7 AM |
13235 | r_type = R_PPC64_TPREL16_LO; |
13236 | if (toc_symndx != 0) | |
13237 | { | |
13238 | rel->r_info = ELF64_R_INFO (toc_symndx, r_type); | |
3a71aa26 | 13239 | rel->r_addend = toc_addend; |
0d4792f7 AM |
13240 | /* We changed the symbol. Start over in order to |
13241 | get h, sym, sec etc. right. */ | |
13242 | rel--; | |
13243 | continue; | |
13244 | } | |
13245 | else | |
13246 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
411e1bfb AM |
13247 | } |
13248 | break; | |
13249 | ||
411e1bfb AM |
13250 | case R_PPC64_GOT_TLSGD16_HI: |
13251 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b AM |
13252 | tls_gd = TLS_TPRELGD; |
13253 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
13254 | goto tls_gdld_hi; | |
13255 | break; | |
13256 | ||
411e1bfb AM |
13257 | case R_PPC64_GOT_TLSLD16_HI: |
13258 | case R_PPC64_GOT_TLSLD16_HA: | |
951fd09b | 13259 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) |
411e1bfb | 13260 | { |
951fd09b AM |
13261 | tls_gdld_hi: |
13262 | if ((tls_mask & tls_gd) != 0) | |
13263 | r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3) | |
13264 | + R_PPC64_GOT_TPREL16_DS); | |
13265 | else | |
411e1bfb | 13266 | { |
4fe5ca5b | 13267 | rel->r_offset -= d_offset; |
727ac201 | 13268 | bfd_put_32 (output_bfd, NOP, contents + rel->r_offset); |
951fd09b | 13269 | r_type = R_PPC64_NONE; |
411e1bfb | 13270 | } |
951fd09b | 13271 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); |
411e1bfb AM |
13272 | } |
13273 | break; | |
13274 | ||
951fd09b AM |
13275 | case R_PPC64_GOT_TLSGD16: |
13276 | case R_PPC64_GOT_TLSGD16_LO: | |
13277 | tls_gd = TLS_TPRELGD; | |
13278 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
102890f0 | 13279 | goto tls_ldgd_opt; |
951fd09b | 13280 | break; |
411e1bfb | 13281 | |
951fd09b AM |
13282 | case R_PPC64_GOT_TLSLD16: |
13283 | case R_PPC64_GOT_TLSLD16_LO: | |
13284 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) | |
13285 | { | |
3a71aa26 | 13286 | unsigned int insn1, insn2, insn3; |
102890f0 AM |
13287 | bfd_vma offset; |
13288 | ||
13289 | tls_ldgd_opt: | |
727fc41e AM |
13290 | offset = (bfd_vma) -1; |
13291 | /* If not using the newer R_PPC64_TLSGD/LD to mark | |
13292 | __tls_get_addr calls, we must trust that the call | |
13293 | stays with its arg setup insns, ie. that the next | |
13294 | reloc is the __tls_get_addr call associated with | |
13295 | the current reloc. Edit both insns. */ | |
13296 | if (input_section->has_tls_get_addr_call | |
13297 | && rel + 1 < relend | |
13298 | && branch_reloc_hash_match (input_bfd, rel + 1, | |
13299 | htab->tls_get_addr, | |
13300 | htab->tls_get_addr_fd)) | |
13301 | offset = rel[1].r_offset; | |
102890f0 | 13302 | if ((tls_mask & tls_gd) != 0) |
411e1bfb | 13303 | { |
102890f0 | 13304 | /* IE */ |
3a71aa26 AM |
13305 | insn1 = bfd_get_32 (output_bfd, |
13306 | contents + rel->r_offset - d_offset); | |
102890f0 AM |
13307 | insn1 &= (1 << 26) - (1 << 2); |
13308 | insn1 |= 58 << 26; /* ld */ | |
13309 | insn2 = 0x7c636a14; /* add 3,3,13 */ | |
727fc41e | 13310 | if (offset != (bfd_vma) -1) |
f58d5a2d | 13311 | rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE); |
102890f0 AM |
13312 | if ((tls_mask & TLS_EXPLICIT) == 0) |
13313 | r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3) | |
13314 | + R_PPC64_GOT_TPREL16_DS); | |
411e1bfb | 13315 | else |
102890f0 AM |
13316 | r_type += R_PPC64_TOC16_DS - R_PPC64_TOC16; |
13317 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
13318 | } | |
13319 | else | |
13320 | { | |
13321 | /* LE */ | |
13322 | insn1 = 0x3c6d0000; /* addis 3,13,0 */ | |
13323 | insn2 = 0x38630000; /* addi 3,3,0 */ | |
13324 | if (tls_gd == 0) | |
951fd09b | 13325 | { |
102890f0 | 13326 | /* Was an LD reloc. */ |
1d483afe AM |
13327 | if (toc_symndx) |
13328 | sec = local_sections[toc_symndx]; | |
13329 | for (r_symndx = 0; | |
13330 | r_symndx < symtab_hdr->sh_info; | |
13331 | r_symndx++) | |
13332 | if (local_sections[r_symndx] == sec) | |
13333 | break; | |
13334 | if (r_symndx >= symtab_hdr->sh_info) | |
cf35638d | 13335 | r_symndx = STN_UNDEF; |
102890f0 | 13336 | rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; |
cf35638d | 13337 | if (r_symndx != STN_UNDEF) |
1d483afe AM |
13338 | rel->r_addend -= (local_syms[r_symndx].st_value |
13339 | + sec->output_offset | |
13340 | + sec->output_section->vma); | |
951fd09b | 13341 | } |
102890f0 | 13342 | else if (toc_symndx != 0) |
3a71aa26 AM |
13343 | { |
13344 | r_symndx = toc_symndx; | |
13345 | rel->r_addend = toc_addend; | |
13346 | } | |
102890f0 AM |
13347 | r_type = R_PPC64_TPREL16_HA; |
13348 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
727fc41e AM |
13349 | if (offset != (bfd_vma) -1) |
13350 | { | |
13351 | rel[1].r_info = ELF64_R_INFO (r_symndx, | |
13352 | R_PPC64_TPREL16_LO); | |
13353 | rel[1].r_offset = offset + d_offset; | |
13354 | rel[1].r_addend = rel->r_addend; | |
13355 | } | |
102890f0 | 13356 | } |
3a71aa26 AM |
13357 | bfd_put_32 (output_bfd, insn1, |
13358 | contents + rel->r_offset - d_offset); | |
727fc41e AM |
13359 | if (offset != (bfd_vma) -1) |
13360 | { | |
13361 | insn3 = bfd_get_32 (output_bfd, | |
13362 | contents + offset + 4); | |
13363 | if (insn3 == NOP | |
13364 | || insn3 == CROR_151515 || insn3 == CROR_313131) | |
13365 | { | |
13366 | rel[1].r_offset += 4; | |
13367 | bfd_put_32 (output_bfd, insn2, contents + offset + 4); | |
13368 | insn2 = NOP; | |
13369 | } | |
13370 | bfd_put_32 (output_bfd, insn2, contents + offset); | |
13371 | } | |
13372 | if ((tls_mask & tls_gd) == 0 | |
13373 | && (tls_gd == 0 || toc_symndx != 0)) | |
13374 | { | |
13375 | /* We changed the symbol. Start over in order | |
13376 | to get h, sym, sec etc. right. */ | |
13377 | rel--; | |
13378 | continue; | |
13379 | } | |
13380 | } | |
13381 | break; | |
13382 | ||
13383 | case R_PPC64_TLSGD: | |
13384 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
13385 | { | |
13386 | unsigned int insn2, insn3; | |
13387 | bfd_vma offset = rel->r_offset; | |
13388 | ||
13389 | if ((tls_mask & TLS_TPRELGD) != 0) | |
13390 | { | |
13391 | /* IE */ | |
13392 | r_type = R_PPC64_NONE; | |
13393 | insn2 = 0x7c636a14; /* add 3,3,13 */ | |
13394 | } | |
13395 | else | |
13396 | { | |
13397 | /* LE */ | |
13398 | if (toc_symndx != 0) | |
13399 | { | |
13400 | r_symndx = toc_symndx; | |
13401 | rel->r_addend = toc_addend; | |
13402 | } | |
13403 | r_type = R_PPC64_TPREL16_LO; | |
13404 | rel->r_offset = offset + d_offset; | |
13405 | insn2 = 0x38630000; /* addi 3,3,0 */ | |
13406 | } | |
13407 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
13408 | /* Zap the reloc on the _tls_get_addr call too. */ | |
13409 | BFD_ASSERT (offset == rel[1].r_offset); | |
f58d5a2d | 13410 | rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE); |
3a71aa26 AM |
13411 | insn3 = bfd_get_32 (output_bfd, |
13412 | contents + offset + 4); | |
102890f0 AM |
13413 | if (insn3 == NOP |
13414 | || insn3 == CROR_151515 || insn3 == CROR_313131) | |
13415 | { | |
727fc41e | 13416 | rel->r_offset += 4; |
3a71aa26 AM |
13417 | bfd_put_32 (output_bfd, insn2, contents + offset + 4); |
13418 | insn2 = NOP; | |
102890f0 | 13419 | } |
102890f0 | 13420 | bfd_put_32 (output_bfd, insn2, contents + offset); |
727fc41e | 13421 | if ((tls_mask & TLS_TPRELGD) == 0 && toc_symndx != 0) |
102890f0 | 13422 | { |
102890f0 AM |
13423 | rel--; |
13424 | continue; | |
411e1bfb | 13425 | } |
411e1bfb | 13426 | } |
411e1bfb AM |
13427 | break; |
13428 | ||
727fc41e AM |
13429 | case R_PPC64_TLSLD: |
13430 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) | |
13431 | { | |
13432 | unsigned int insn2, insn3; | |
13433 | bfd_vma offset = rel->r_offset; | |
13434 | ||
13435 | if (toc_symndx) | |
13436 | sec = local_sections[toc_symndx]; | |
13437 | for (r_symndx = 0; | |
13438 | r_symndx < symtab_hdr->sh_info; | |
13439 | r_symndx++) | |
13440 | if (local_sections[r_symndx] == sec) | |
13441 | break; | |
13442 | if (r_symndx >= symtab_hdr->sh_info) | |
cf35638d | 13443 | r_symndx = STN_UNDEF; |
727fc41e | 13444 | rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; |
cf35638d | 13445 | if (r_symndx != STN_UNDEF) |
727fc41e AM |
13446 | rel->r_addend -= (local_syms[r_symndx].st_value |
13447 | + sec->output_offset | |
13448 | + sec->output_section->vma); | |
13449 | ||
13450 | r_type = R_PPC64_TPREL16_LO; | |
13451 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
13452 | rel->r_offset = offset + d_offset; | |
13453 | /* Zap the reloc on the _tls_get_addr call too. */ | |
13454 | BFD_ASSERT (offset == rel[1].r_offset); | |
f58d5a2d | 13455 | rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE); |
727fc41e AM |
13456 | insn2 = 0x38630000; /* addi 3,3,0 */ |
13457 | insn3 = bfd_get_32 (output_bfd, | |
13458 | contents + offset + 4); | |
13459 | if (insn3 == NOP | |
13460 | || insn3 == CROR_151515 || insn3 == CROR_313131) | |
13461 | { | |
13462 | rel->r_offset += 4; | |
13463 | bfd_put_32 (output_bfd, insn2, contents + offset + 4); | |
13464 | insn2 = NOP; | |
13465 | } | |
13466 | bfd_put_32 (output_bfd, insn2, contents + offset); | |
13467 | rel--; | |
13468 | continue; | |
13469 | } | |
13470 | break; | |
13471 | ||
411e1bfb | 13472 | case R_PPC64_DTPMOD64: |
951fd09b AM |
13473 | if (rel + 1 < relend |
13474 | && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64) | |
13475 | && rel[1].r_offset == rel->r_offset + 8) | |
411e1bfb | 13476 | { |
951fd09b AM |
13477 | if ((tls_mask & TLS_GD) == 0) |
13478 | { | |
13479 | rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_NONE); | |
13480 | if ((tls_mask & TLS_TPRELGD) != 0) | |
13481 | r_type = R_PPC64_TPREL64; | |
13482 | else | |
13483 | { | |
4ce794b7 | 13484 | bfd_put_64 (output_bfd, 1, contents + rel->r_offset); |
951fd09b AM |
13485 | r_type = R_PPC64_NONE; |
13486 | } | |
13487 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
13488 | } | |
13489 | } | |
13490 | else | |
13491 | { | |
13492 | if ((tls_mask & TLS_LD) == 0) | |
411e1bfb | 13493 | { |
4ce794b7 | 13494 | bfd_put_64 (output_bfd, 1, contents + rel->r_offset); |
411e1bfb | 13495 | r_type = R_PPC64_NONE; |
951fd09b | 13496 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); |
411e1bfb | 13497 | } |
411e1bfb AM |
13498 | } |
13499 | break; | |
13500 | ||
13501 | case R_PPC64_TPREL64: | |
951fd09b | 13502 | if ((tls_mask & TLS_TPREL) == 0) |
411e1bfb AM |
13503 | { |
13504 | r_type = R_PPC64_NONE; | |
13505 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
13506 | } | |
13507 | break; | |
52a82034 AM |
13508 | |
13509 | case R_PPC64_REL16_HA: | |
13510 | /* If we are generating a non-PIC executable, edit | |
13511 | . 0: addis 2,12,.TOC.-0b@ha | |
13512 | . addi 2,2,.TOC.-0b@l | |
13513 | used by ELFv2 global entry points to set up r2, to | |
13514 | . lis 2,.TOC.@ha | |
13515 | . addi 2,2,.TOC.@l | |
13516 | if .TOC. is in range. */ | |
13517 | if (!info->shared | |
13518 | && h != NULL && &h->elf == htab->elf.hgot | |
13519 | && rel + 1 < relend | |
13520 | && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_REL16_LO) | |
13521 | && rel[1].r_offset == rel->r_offset + 4 | |
13522 | && rel[1].r_addend == rel->r_addend + 4 | |
13523 | && relocation + 0x80008000 <= 0xffffffff) | |
13524 | { | |
13525 | unsigned int insn1, insn2; | |
13526 | bfd_vma offset = rel->r_offset - d_offset; | |
13527 | insn1 = bfd_get_32 (output_bfd, contents + offset); | |
13528 | insn2 = bfd_get_32 (output_bfd, contents + offset + 4); | |
13529 | if ((insn1 & 0xffff0000) == 0x3c4c0000 /* addis 2,12 */ | |
13530 | && (insn2 & 0xffff0000) == 0x38420000 /* addi 2,2 */) | |
13531 | { | |
13532 | r_type = R_PPC64_ADDR16_HA; | |
13533 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
13534 | rel->r_addend -= d_offset; | |
13535 | rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_ADDR16_LO); | |
13536 | rel[1].r_addend -= d_offset + 4; | |
13537 | bfd_put_32 (output_bfd, 0x3c400000, contents + offset); | |
13538 | } | |
13539 | } | |
13540 | break; | |
411e1bfb AM |
13541 | } |
13542 | ||
13543 | /* Handle other relocations that tweak non-addend part of insn. */ | |
86c76c7b | 13544 | insn = 0; |
b25116a9 AM |
13545 | max_br_offset = 1 << 25; |
13546 | addend = rel->r_addend; | |
bc30df16 | 13547 | reloc_dest = DEST_NORMAL; |
65f38f15 | 13548 | switch (r_type) |
5bd4f169 AM |
13549 | { |
13550 | default: | |
65f38f15 | 13551 | break; |
5bd4f169 | 13552 | |
3b421ab3 AM |
13553 | case R_PPC64_TOCSAVE: |
13554 | if (relocation + addend == (rel->r_offset | |
13555 | + input_section->output_offset | |
13556 | + input_section->output_section->vma) | |
13557 | && tocsave_find (htab, NO_INSERT, | |
13558 | &local_syms, rel, input_bfd)) | |
13559 | { | |
13560 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
13561 | if (insn == NOP | |
13562 | || insn == CROR_151515 || insn == CROR_313131) | |
a078d95a AM |
13563 | bfd_put_32 (input_bfd, |
13564 | STD_R2_0R1 + STK_TOC (htab), | |
3b421ab3 AM |
13565 | contents + rel->r_offset); |
13566 | } | |
13567 | break; | |
13568 | ||
65f38f15 AM |
13569 | /* Branch taken prediction relocations. */ |
13570 | case R_PPC64_ADDR14_BRTAKEN: | |
13571 | case R_PPC64_REL14_BRTAKEN: | |
cedb70c5 KH |
13572 | insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */ |
13573 | /* Fall thru. */ | |
65f38f15 | 13574 | |
86c76c7b | 13575 | /* Branch not taken prediction relocations. */ |
65f38f15 AM |
13576 | case R_PPC64_ADDR14_BRNTAKEN: |
13577 | case R_PPC64_REL14_BRNTAKEN: | |
411e1bfb AM |
13578 | insn |= bfd_get_32 (output_bfd, |
13579 | contents + rel->r_offset) & ~(0x01 << 21); | |
b25116a9 | 13580 | /* Fall thru. */ |
86c76c7b | 13581 | |
b25116a9 AM |
13582 | case R_PPC64_REL14: |
13583 | max_br_offset = 1 << 15; | |
13584 | /* Fall thru. */ | |
5bd4f169 | 13585 | |
65f38f15 | 13586 | case R_PPC64_REL24: |
ad8e1ba5 AM |
13587 | /* Calls to functions with a different TOC, such as calls to |
13588 | shared objects, need to alter the TOC pointer. This is | |
13589 | done using a linkage stub. A REL24 branching to these | |
13590 | linkage stubs needs to be followed by a nop, as the nop | |
13591 | will be replaced with an instruction to restore the TOC | |
13592 | base pointer. */ | |
8387904d | 13593 | fdh = h; |
b31867b6 AM |
13594 | if (h != NULL |
13595 | && h->oh != NULL | |
13596 | && h->oh->is_func_descriptor) | |
13597 | fdh = ppc_follow_link (h->oh); | |
31c76678 DK |
13598 | stub_entry = ppc_get_stub_entry (input_section, sec, fdh, &orig_rel, |
13599 | htab); | |
6abec6bc | 13600 | if (stub_entry != NULL |
ad8e1ba5 | 13601 | && (stub_entry->stub_type == ppc_stub_plt_call |
794e51c0 | 13602 | || stub_entry->stub_type == ppc_stub_plt_call_r2save |
ad8e1ba5 AM |
13603 | || stub_entry->stub_type == ppc_stub_plt_branch_r2off |
13604 | || stub_entry->stub_type == ppc_stub_long_branch_r2off)) | |
41bd81ab | 13605 | { |
b25116a9 | 13606 | bfd_boolean can_plt_call = FALSE; |
721956f4 | 13607 | |
ba8ca3e7 AM |
13608 | /* All of these stubs will modify r2, so there must be a |
13609 | branch and link followed by a nop. The nop is | |
13610 | replaced by an insn to restore r2. */ | |
eea6121a | 13611 | if (rel->r_offset + 8 <= input_section->size) |
41bd81ab | 13612 | { |
ba8ca3e7 AM |
13613 | unsigned long br; |
13614 | ||
13615 | br = bfd_get_32 (input_bfd, | |
13616 | contents + rel->r_offset); | |
13617 | if ((br & 1) != 0) | |
41bd81ab | 13618 | { |
ba8ca3e7 AM |
13619 | unsigned long nop; |
13620 | ||
13621 | nop = bfd_get_32 (input_bfd, | |
13622 | contents + rel->r_offset + 4); | |
13623 | if (nop == NOP | |
13624 | || nop == CROR_151515 || nop == CROR_313131) | |
a7f2871e | 13625 | { |
ba8ca3e7 AM |
13626 | if (h != NULL |
13627 | && (h == htab->tls_get_addr_fd | |
13628 | || h == htab->tls_get_addr) | |
e7d1c40c | 13629 | && !htab->params->no_tls_get_addr_opt) |
ba8ca3e7 AM |
13630 | { |
13631 | /* Special stub used, leave nop alone. */ | |
13632 | } | |
13633 | else | |
a078d95a AM |
13634 | bfd_put_32 (input_bfd, |
13635 | LD_R2_0R1 + STK_TOC (htab), | |
ba8ca3e7 AM |
13636 | contents + rel->r_offset + 4); |
13637 | can_plt_call = TRUE; | |
a7f2871e | 13638 | } |
41bd81ab | 13639 | } |
5bd4f169 | 13640 | } |
721956f4 | 13641 | |
ba8ca3e7 | 13642 | if (!can_plt_call && h != NULL) |
721956f4 | 13643 | { |
ba8ca3e7 AM |
13644 | const char *name = h->elf.root.root.string; |
13645 | ||
13646 | if (*name == '.') | |
13647 | ++name; | |
13648 | ||
13649 | if (strncmp (name, "__libc_start_main", 17) == 0 | |
13650 | && (name[17] == 0 || name[17] == '@')) | |
6ab189d5 | 13651 | { |
ba8ca3e7 AM |
13652 | /* Allow crt1 branch to go via a toc adjusting |
13653 | stub. Other calls that never return could do | |
13654 | the same, if we could detect such. */ | |
b25116a9 | 13655 | can_plt_call = TRUE; |
6ab189d5 | 13656 | } |
ba8ca3e7 AM |
13657 | } |
13658 | ||
13659 | if (!can_plt_call) | |
13660 | { | |
13661 | /* g++ as of 20130507 emits self-calls without a | |
13662 | following nop. This is arguably wrong since we | |
13663 | have conflicting information. On the one hand a | |
13664 | global symbol and on the other a local call | |
13665 | sequence, but don't error for this special case. | |
13666 | It isn't possible to cheaply verify we have | |
13667 | exactly such a call. Allow all calls to the same | |
13668 | section. */ | |
13669 | asection *code_sec = sec; | |
13670 | ||
13671 | if (get_opd_info (sec) != NULL) | |
ad8e1ba5 | 13672 | { |
ba8ca3e7 AM |
13673 | bfd_vma off = (relocation + addend |
13674 | - sec->output_section->vma | |
13675 | - sec->output_offset); | |
bc30df16 | 13676 | |
ba8ca3e7 | 13677 | opd_entry_value (sec, off, &code_sec, NULL, FALSE); |
ad8e1ba5 | 13678 | } |
ba8ca3e7 AM |
13679 | if (code_sec == input_section) |
13680 | can_plt_call = TRUE; | |
13681 | } | |
13682 | ||
13683 | if (!can_plt_call) | |
13684 | { | |
13685 | info->callbacks->einfo | |
13686 | (_("%P: %H: call to `%T' lacks nop, can't restore toc; " | |
1a1fb627 | 13687 | "recompile with -fPIC\n"), |
ba8ca3e7 AM |
13688 | input_bfd, input_section, rel->r_offset, sym_name); |
13689 | ||
13690 | bfd_set_error (bfd_error_bad_value); | |
13691 | ret = FALSE; | |
721956f4 AM |
13692 | } |
13693 | ||
b25116a9 | 13694 | if (can_plt_call |
794e51c0 AM |
13695 | && (stub_entry->stub_type == ppc_stub_plt_call |
13696 | || stub_entry->stub_type == ppc_stub_plt_call_r2save)) | |
b25116a9 AM |
13697 | unresolved_reloc = FALSE; |
13698 | } | |
13699 | ||
6abec6bc AM |
13700 | if ((stub_entry == NULL |
13701 | || stub_entry->stub_type == ppc_stub_long_branch | |
13702 | || stub_entry->stub_type == ppc_stub_plt_branch) | |
8387904d AM |
13703 | && get_opd_info (sec) != NULL) |
13704 | { | |
13705 | /* The branch destination is the value of the opd entry. */ | |
4cc603a5 AM |
13706 | bfd_vma off = (relocation + addend |
13707 | - sec->output_section->vma | |
13708 | - sec->output_offset); | |
aef36ac1 | 13709 | bfd_vma dest = opd_entry_value (sec, off, NULL, NULL, FALSE); |
8387904d AM |
13710 | if (dest != (bfd_vma) -1) |
13711 | { | |
13712 | relocation = dest; | |
13713 | addend = 0; | |
bc30df16 | 13714 | reloc_dest = DEST_OPD; |
8387904d AM |
13715 | } |
13716 | } | |
13717 | ||
b25116a9 AM |
13718 | /* If the branch is out of reach we ought to have a long |
13719 | branch stub. */ | |
13720 | from = (rel->r_offset | |
13721 | + input_section->output_offset | |
13722 | + input_section->output_section->vma); | |
13723 | ||
6911b7dc AM |
13724 | relocation += PPC64_LOCAL_ENTRY_OFFSET (fdh |
13725 | ? fdh->elf.other | |
13726 | : sym->st_other); | |
13727 | ||
6abec6bc AM |
13728 | if (stub_entry != NULL |
13729 | && (stub_entry->stub_type == ppc_stub_long_branch | |
13730 | || stub_entry->stub_type == ppc_stub_plt_branch) | |
13731 | && (r_type == R_PPC64_ADDR14_BRTAKEN | |
13732 | || r_type == R_PPC64_ADDR14_BRNTAKEN | |
13733 | || (relocation + addend - from + max_br_offset | |
13734 | < 2 * max_br_offset))) | |
13735 | /* Don't use the stub if this branch is in range. */ | |
13736 | stub_entry = NULL; | |
b25116a9 AM |
13737 | |
13738 | if (stub_entry != NULL) | |
13739 | { | |
13740 | /* Munge up the value and addend so that we call the stub | |
13741 | rather than the procedure directly. */ | |
13742 | relocation = (stub_entry->stub_offset | |
13743 | + stub_entry->stub_sec->output_offset | |
13744 | + stub_entry->stub_sec->output_section->vma); | |
13745 | addend = 0; | |
bc30df16 | 13746 | reloc_dest = DEST_STUB; |
3b421ab3 | 13747 | |
794e51c0 AM |
13748 | if ((stub_entry->stub_type == ppc_stub_plt_call |
13749 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
13750 | && (ALWAYS_EMIT_R2SAVE | |
13751 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
3b421ab3 AM |
13752 | && rel + 1 < relend |
13753 | && rel[1].r_offset == rel->r_offset + 4 | |
13754 | && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOCSAVE) | |
13755 | relocation += 4; | |
b25116a9 AM |
13756 | } |
13757 | ||
13758 | if (insn != 0) | |
13759 | { | |
794e51c0 | 13760 | if (is_isa_v2) |
721956f4 | 13761 | { |
b25116a9 AM |
13762 | /* Set 'a' bit. This is 0b00010 in BO field for branch |
13763 | on CR(BI) insns (BO == 001at or 011at), and 0b01000 | |
13764 | for branch on CTR insns (BO == 1a00t or 1a01t). */ | |
13765 | if ((insn & (0x14 << 21)) == (0x04 << 21)) | |
13766 | insn |= 0x02 << 21; | |
13767 | else if ((insn & (0x14 << 21)) == (0x10 << 21)) | |
13768 | insn |= 0x08 << 21; | |
13769 | else | |
13770 | break; | |
13771 | } | |
13772 | else | |
13773 | { | |
13774 | /* Invert 'y' bit if not the default. */ | |
4cc603a5 | 13775 | if ((bfd_signed_vma) (relocation + addend - from) < 0) |
b25116a9 | 13776 | insn ^= 0x01 << 21; |
721956f4 | 13777 | } |
b25116a9 AM |
13778 | |
13779 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset); | |
5bd4f169 | 13780 | } |
e86ce104 | 13781 | |
06da1e8e AM |
13782 | /* NOP out calls to undefined weak functions. |
13783 | We can thus call a weak function without first | |
13784 | checking whether the function is defined. */ | |
b25116a9 | 13785 | else if (h != NULL |
039b3fef | 13786 | && h->elf.root.type == bfd_link_hash_undefweak |
766bc656 | 13787 | && h->elf.dynindx == -1 |
b25116a9 AM |
13788 | && r_type == R_PPC64_REL24 |
13789 | && relocation == 0 | |
4cc603a5 | 13790 | && addend == 0) |
e86ce104 | 13791 | { |
06da1e8e AM |
13792 | bfd_put_32 (output_bfd, NOP, contents + rel->r_offset); |
13793 | continue; | |
e86ce104 | 13794 | } |
65f38f15 AM |
13795 | break; |
13796 | } | |
5bd4f169 | 13797 | |
65f38f15 | 13798 | /* Set `addend'. */ |
411e1bfb | 13799 | tls_type = 0; |
65f38f15 AM |
13800 | switch (r_type) |
13801 | { | |
13802 | default: | |
25f53a85 | 13803 | info->callbacks->einfo |
bc30df16 | 13804 | (_("%P: %B: unknown relocation type %d for `%T'\n"), |
d003868e | 13805 | input_bfd, (int) r_type, sym_name); |
5bd4f169 | 13806 | |
65f38f15 | 13807 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 13808 | ret = FALSE; |
65f38f15 | 13809 | continue; |
5bd4f169 | 13810 | |
65f38f15 | 13811 | case R_PPC64_NONE: |
411e1bfb | 13812 | case R_PPC64_TLS: |
727fc41e AM |
13813 | case R_PPC64_TLSGD: |
13814 | case R_PPC64_TLSLD: | |
3b421ab3 | 13815 | case R_PPC64_TOCSAVE: |
04c9666a AM |
13816 | case R_PPC64_GNU_VTINHERIT: |
13817 | case R_PPC64_GNU_VTENTRY: | |
65f38f15 | 13818 | continue; |
5bd4f169 AM |
13819 | |
13820 | /* GOT16 relocations. Like an ADDR16 using the symbol's | |
13821 | address in the GOT as relocation value instead of the | |
411e1bfb | 13822 | symbol's value itself. Also, create a GOT entry for the |
5bd4f169 | 13823 | symbol and put the symbol value there. */ |
411e1bfb AM |
13824 | case R_PPC64_GOT_TLSGD16: |
13825 | case R_PPC64_GOT_TLSGD16_LO: | |
13826 | case R_PPC64_GOT_TLSGD16_HI: | |
13827 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b | 13828 | tls_type = TLS_TLS | TLS_GD; |
411e1bfb AM |
13829 | goto dogot; |
13830 | ||
13831 | case R_PPC64_GOT_TLSLD16: | |
13832 | case R_PPC64_GOT_TLSLD16_LO: | |
13833 | case R_PPC64_GOT_TLSLD16_HI: | |
13834 | case R_PPC64_GOT_TLSLD16_HA: | |
951fd09b | 13835 | tls_type = TLS_TLS | TLS_LD; |
411e1bfb AM |
13836 | goto dogot; |
13837 | ||
13838 | case R_PPC64_GOT_TPREL16_DS: | |
13839 | case R_PPC64_GOT_TPREL16_LO_DS: | |
13840 | case R_PPC64_GOT_TPREL16_HI: | |
13841 | case R_PPC64_GOT_TPREL16_HA: | |
13842 | tls_type = TLS_TLS | TLS_TPREL; | |
13843 | goto dogot; | |
13844 | ||
13845 | case R_PPC64_GOT_DTPREL16_DS: | |
13846 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
13847 | case R_PPC64_GOT_DTPREL16_HI: | |
13848 | case R_PPC64_GOT_DTPREL16_HA: | |
13849 | tls_type = TLS_TLS | TLS_DTPREL; | |
13850 | goto dogot; | |
13851 | ||
65f38f15 AM |
13852 | case R_PPC64_GOT16: |
13853 | case R_PPC64_GOT16_LO: | |
13854 | case R_PPC64_GOT16_HI: | |
13855 | case R_PPC64_GOT16_HA: | |
13856 | case R_PPC64_GOT16_DS: | |
13857 | case R_PPC64_GOT16_LO_DS: | |
411e1bfb | 13858 | dogot: |
5bd4f169 AM |
13859 | { |
13860 | /* Relocation is to the entry for this symbol in the global | |
13861 | offset table. */ | |
e717da7e | 13862 | asection *got; |
d881513a | 13863 | bfd_vma *offp; |
5bd4f169 | 13864 | bfd_vma off; |
d881513a | 13865 | unsigned long indx = 0; |
927be08e | 13866 | struct got_entry *ent; |
65f38f15 | 13867 | |
d881513a AM |
13868 | if (tls_type == (TLS_TLS | TLS_LD) |
13869 | && (h == NULL | |
f5385ebf | 13870 | || !h->elf.def_dynamic)) |
927be08e | 13871 | ent = ppc64_tlsld_got (input_bfd); |
411e1bfb | 13872 | else |
5bd4f169 | 13873 | { |
5bd4f169 | 13874 | |
d881513a AM |
13875 | if (h != NULL) |
13876 | { | |
13877 | bfd_boolean dyn = htab->elf.dynamic_sections_created; | |
039b3fef AM |
13878 | if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, |
13879 | &h->elf) | |
d881513a | 13880 | || (info->shared |
afe397ea | 13881 | && SYMBOL_REFERENCES_LOCAL (info, &h->elf))) |
d881513a AM |
13882 | /* This is actually a static link, or it is a |
13883 | -Bsymbolic link and the symbol is defined | |
13884 | locally, or the symbol was forced to be local | |
13885 | because of a version file. */ | |
13886 | ; | |
13887 | else | |
13888 | { | |
14acf4dc | 13889 | BFD_ASSERT (h->elf.dynindx != -1); |
039b3fef | 13890 | indx = h->elf.dynindx; |
d881513a AM |
13891 | unresolved_reloc = FALSE; |
13892 | } | |
039b3fef | 13893 | ent = h->elf.got.glist; |
d881513a | 13894 | } |
411e1bfb | 13895 | else |
5bd4f169 | 13896 | { |
d881513a AM |
13897 | if (local_got_ents == NULL) |
13898 | abort (); | |
13899 | ent = local_got_ents[r_symndx]; | |
5bd4f169 | 13900 | } |
d881513a AM |
13901 | |
13902 | for (; ent != NULL; ent = ent->next) | |
31c76678 | 13903 | if (ent->addend == orig_rel.r_addend |
e717da7e | 13904 | && ent->owner == input_bfd |
d881513a AM |
13905 | && ent->tls_type == tls_type) |
13906 | break; | |
5bd4f169 | 13907 | } |
411e1bfb | 13908 | |
927be08e AM |
13909 | if (ent == NULL) |
13910 | abort (); | |
13911 | if (ent->is_indirect) | |
13912 | ent = ent->got.ent; | |
13913 | offp = &ent->got.offset; | |
13914 | got = ppc64_elf_tdata (ent->owner)->got; | |
e717da7e AM |
13915 | if (got == NULL) |
13916 | abort (); | |
13917 | ||
411e1bfb AM |
13918 | /* The offset must always be a multiple of 8. We use the |
13919 | least significant bit to record whether we have already | |
13920 | processed this entry. */ | |
d881513a | 13921 | off = *offp; |
411e1bfb AM |
13922 | if ((off & 1) != 0) |
13923 | off &= ~1; | |
5bd4f169 AM |
13924 | else |
13925 | { | |
411e1bfb AM |
13926 | /* Generate relocs for the dynamic linker, except in |
13927 | the case of TLSLD where we'll use one entry per | |
13928 | module. */ | |
25f23106 AM |
13929 | asection *relgot; |
13930 | bfd_boolean ifunc; | |
e717da7e | 13931 | |
d881513a | 13932 | *offp = off | 1; |
25f23106 AM |
13933 | relgot = NULL; |
13934 | ifunc = (h != NULL | |
13935 | ? h->elf.type == STT_GNU_IFUNC | |
13936 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC); | |
19e08130 | 13937 | if (ifunc) |
33e44f2e | 13938 | relgot = htab->elf.irelplt; |
19e08130 AM |
13939 | else if ((info->shared || indx != 0) |
13940 | && (h == NULL | |
13941 | || (tls_type == (TLS_TLS | TLS_LD) | |
13942 | && !h->elf.def_dynamic) | |
13943 | || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT | |
13944 | || h->elf.root.type != bfd_link_hash_undefweak)) | |
13945 | relgot = ppc64_elf_tdata (ent->owner)->relgot; | |
25f23106 | 13946 | if (relgot != NULL) |
5bd4f169 | 13947 | { |
e717da7e AM |
13948 | outrel.r_offset = (got->output_section->vma |
13949 | + got->output_offset | |
411e1bfb | 13950 | + off); |
4cc603a5 | 13951 | outrel.r_addend = addend; |
d881513a | 13952 | if (tls_type & (TLS_LD | TLS_GD)) |
5bd4f169 | 13953 | { |
411e1bfb | 13954 | outrel.r_addend = 0; |
e515b051 | 13955 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPMOD64); |
d881513a AM |
13956 | if (tls_type == (TLS_TLS | TLS_GD)) |
13957 | { | |
e717da7e AM |
13958 | loc = relgot->contents; |
13959 | loc += (relgot->reloc_count++ | |
d881513a AM |
13960 | * sizeof (Elf64_External_Rela)); |
13961 | bfd_elf64_swap_reloca_out (output_bfd, | |
13962 | &outrel, loc); | |
e515b051 | 13963 | outrel.r_offset += 8; |
4cc603a5 | 13964 | outrel.r_addend = addend; |
d881513a AM |
13965 | outrel.r_info |
13966 | = ELF64_R_INFO (indx, R_PPC64_DTPREL64); | |
d881513a | 13967 | } |
411e1bfb | 13968 | } |
951fd09b | 13969 | else if (tls_type == (TLS_TLS | TLS_DTPREL)) |
411e1bfb | 13970 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64); |
951fd09b | 13971 | else if (tls_type == (TLS_TLS | TLS_TPREL)) |
411e1bfb | 13972 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_TPREL64); |
25f23106 AM |
13973 | else if (indx != 0) |
13974 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT); | |
13975 | else | |
81407a69 | 13976 | { |
25f23106 AM |
13977 | if (ifunc) |
13978 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE); | |
13979 | else | |
13980 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
81407a69 AM |
13981 | |
13982 | /* Write the .got section contents for the sake | |
13983 | of prelink. */ | |
e717da7e | 13984 | loc = got->contents + off; |
23fbd6fa JJ |
13985 | bfd_put_64 (output_bfd, outrel.r_addend + relocation, |
13986 | loc); | |
81407a69 | 13987 | } |
81407a69 AM |
13988 | |
13989 | if (indx == 0 && tls_type != (TLS_TLS | TLS_LD)) | |
e515b051 AM |
13990 | { |
13991 | outrel.r_addend += relocation; | |
13992 | if (tls_type & (TLS_GD | TLS_DTPREL | TLS_TPREL)) | |
e1918d23 | 13993 | outrel.r_addend -= htab->elf.tls_sec->vma; |
e515b051 | 13994 | } |
e717da7e AM |
13995 | loc = relgot->contents; |
13996 | loc += (relgot->reloc_count++ | |
411e1bfb AM |
13997 | * sizeof (Elf64_External_Rela)); |
13998 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); | |
13999 | } | |
14000 | ||
ad8e1ba5 | 14001 | /* Init the .got section contents here if we're not |
81407a69 | 14002 | emitting a reloc. */ |
d881513a | 14003 | else |
411e1bfb | 14004 | { |
4cc603a5 | 14005 | relocation += addend; |
7b609f53 AM |
14006 | if (tls_type == (TLS_TLS | TLS_LD)) |
14007 | relocation = 1; | |
14008 | else if (tls_type != 0) | |
411e1bfb | 14009 | { |
e1918d23 | 14010 | relocation -= htab->elf.tls_sec->vma + DTP_OFFSET; |
7b609f53 | 14011 | if (tls_type == (TLS_TLS | TLS_TPREL)) |
411e1bfb | 14012 | relocation += DTP_OFFSET - TP_OFFSET; |
5bd4f169 | 14013 | |
7b609f53 AM |
14014 | if (tls_type == (TLS_TLS | TLS_GD)) |
14015 | { | |
14016 | bfd_put_64 (output_bfd, relocation, | |
e717da7e | 14017 | got->contents + off + 8); |
7b609f53 AM |
14018 | relocation = 1; |
14019 | } | |
411e1bfb | 14020 | } |
7b609f53 | 14021 | |
411e1bfb | 14022 | bfd_put_64 (output_bfd, relocation, |
e717da7e | 14023 | got->contents + off); |
5bd4f169 AM |
14024 | } |
14025 | } | |
14026 | ||
65f38f15 AM |
14027 | if (off >= (bfd_vma) -2) |
14028 | abort (); | |
14029 | ||
bf102f86 AM |
14030 | relocation = got->output_section->vma + got->output_offset + off; |
14031 | addend = -(TOCstart + htab->stub_group[input_section->id].toc_off); | |
5bd4f169 | 14032 | } |
65f38f15 AM |
14033 | break; |
14034 | ||
14035 | case R_PPC64_PLT16_HA: | |
14036 | case R_PPC64_PLT16_HI: | |
14037 | case R_PPC64_PLT16_LO: | |
14038 | case R_PPC64_PLT32: | |
14039 | case R_PPC64_PLT64: | |
14040 | /* Relocation is to the entry for this symbol in the | |
14041 | procedure linkage table. */ | |
14042 | ||
14043 | /* Resolve a PLT reloc against a local symbol directly, | |
14044 | without using the procedure linkage table. */ | |
14045 | if (h == NULL) | |
14046 | break; | |
14047 | ||
411e1bfb AM |
14048 | /* It's possible that we didn't make a PLT entry for this |
14049 | symbol. This happens when statically linking PIC code, | |
14050 | or when using -Bsymbolic. Go find a match if there is a | |
14051 | PLT entry. */ | |
33e44f2e | 14052 | if (htab->elf.splt != NULL) |
65f38f15 | 14053 | { |
411e1bfb | 14054 | struct plt_entry *ent; |
039b3fef | 14055 | for (ent = h->elf.plt.plist; ent != NULL; ent = ent->next) |
a345bc8d AM |
14056 | if (ent->plt.offset != (bfd_vma) -1 |
14057 | && ent->addend == orig_rel.r_addend) | |
411e1bfb | 14058 | { |
33e44f2e AM |
14059 | relocation = (htab->elf.splt->output_section->vma |
14060 | + htab->elf.splt->output_offset | |
411e1bfb AM |
14061 | + ent->plt.offset); |
14062 | unresolved_reloc = FALSE; | |
a345bc8d | 14063 | break; |
411e1bfb | 14064 | } |
65f38f15 | 14065 | } |
65f38f15 | 14066 | break; |
5bd4f169 | 14067 | |
0b13192e AM |
14068 | case R_PPC64_TOC: |
14069 | /* Relocation value is TOC base. */ | |
14070 | relocation = TOCstart; | |
cf35638d | 14071 | if (r_symndx == STN_UNDEF) |
0b13192e | 14072 | relocation += htab->stub_group[input_section->id].toc_off; |
8517fae7 AM |
14073 | else if (unresolved_reloc) |
14074 | ; | |
14075 | else if (sec != NULL && sec->id <= htab->top_id) | |
0b13192e AM |
14076 | relocation += htab->stub_group[sec->id].toc_off; |
14077 | else | |
14078 | unresolved_reloc = TRUE; | |
ab96bf03 | 14079 | goto dodyn; |
0b13192e | 14080 | |
5bd4f169 AM |
14081 | /* TOC16 relocs. We want the offset relative to the TOC base, |
14082 | which is the address of the start of the TOC plus 0x8000. | |
14083 | The TOC consists of sections .got, .toc, .tocbss, and .plt, | |
14084 | in this order. */ | |
65f38f15 AM |
14085 | case R_PPC64_TOC16: |
14086 | case R_PPC64_TOC16_LO: | |
14087 | case R_PPC64_TOC16_HI: | |
14088 | case R_PPC64_TOC16_DS: | |
14089 | case R_PPC64_TOC16_LO_DS: | |
14090 | case R_PPC64_TOC16_HA: | |
ad8e1ba5 | 14091 | addend -= TOCstart + htab->stub_group[input_section->id].toc_off; |
5bd4f169 AM |
14092 | break; |
14093 | ||
14094 | /* Relocate against the beginning of the section. */ | |
65f38f15 AM |
14095 | case R_PPC64_SECTOFF: |
14096 | case R_PPC64_SECTOFF_LO: | |
14097 | case R_PPC64_SECTOFF_HI: | |
14098 | case R_PPC64_SECTOFF_DS: | |
14099 | case R_PPC64_SECTOFF_LO_DS: | |
14100 | case R_PPC64_SECTOFF_HA: | |
4ce794b7 | 14101 | if (sec != NULL) |
65f38f15 | 14102 | addend -= sec->output_section->vma; |
5bd4f169 AM |
14103 | break; |
14104 | ||
25f23106 AM |
14105 | case R_PPC64_REL16: |
14106 | case R_PPC64_REL16_LO: | |
14107 | case R_PPC64_REL16_HI: | |
14108 | case R_PPC64_REL16_HA: | |
14109 | break; | |
14110 | ||
721956f4 AM |
14111 | case R_PPC64_REL14: |
14112 | case R_PPC64_REL14_BRNTAKEN: | |
14113 | case R_PPC64_REL14_BRTAKEN: | |
5d1634d7 AM |
14114 | case R_PPC64_REL24: |
14115 | break; | |
14116 | ||
411e1bfb AM |
14117 | case R_PPC64_TPREL16: |
14118 | case R_PPC64_TPREL16_LO: | |
14119 | case R_PPC64_TPREL16_HI: | |
14120 | case R_PPC64_TPREL16_HA: | |
14121 | case R_PPC64_TPREL16_DS: | |
14122 | case R_PPC64_TPREL16_LO_DS: | |
f9c6b907 AM |
14123 | case R_PPC64_TPREL16_HIGH: |
14124 | case R_PPC64_TPREL16_HIGHA: | |
411e1bfb AM |
14125 | case R_PPC64_TPREL16_HIGHER: |
14126 | case R_PPC64_TPREL16_HIGHERA: | |
14127 | case R_PPC64_TPREL16_HIGHEST: | |
14128 | case R_PPC64_TPREL16_HIGHESTA: | |
766bc656 AM |
14129 | if (h != NULL |
14130 | && h->elf.root.type == bfd_link_hash_undefweak | |
14131 | && h->elf.dynindx == -1) | |
14132 | { | |
14133 | /* Make this relocation against an undefined weak symbol | |
14134 | resolve to zero. This is really just a tweak, since | |
14135 | code using weak externs ought to check that they are | |
14136 | defined before using them. */ | |
14137 | bfd_byte *p = contents + rel->r_offset - d_offset; | |
14138 | ||
14139 | insn = bfd_get_32 (output_bfd, p); | |
14140 | insn = _bfd_elf_ppc_at_tprel_transform (insn, 13); | |
14141 | if (insn != 0) | |
14142 | bfd_put_32 (output_bfd, insn, p); | |
14143 | break; | |
14144 | } | |
e1918d23 | 14145 | addend -= htab->elf.tls_sec->vma + TP_OFFSET; |
411e1bfb AM |
14146 | if (info->shared) |
14147 | /* The TPREL16 relocs shouldn't really be used in shared | |
14148 | libs as they will result in DT_TEXTREL being set, but | |
14149 | support them anyway. */ | |
14150 | goto dodyn; | |
14151 | break; | |
14152 | ||
14153 | case R_PPC64_DTPREL16: | |
14154 | case R_PPC64_DTPREL16_LO: | |
14155 | case R_PPC64_DTPREL16_HI: | |
14156 | case R_PPC64_DTPREL16_HA: | |
14157 | case R_PPC64_DTPREL16_DS: | |
14158 | case R_PPC64_DTPREL16_LO_DS: | |
f9c6b907 AM |
14159 | case R_PPC64_DTPREL16_HIGH: |
14160 | case R_PPC64_DTPREL16_HIGHA: | |
411e1bfb AM |
14161 | case R_PPC64_DTPREL16_HIGHER: |
14162 | case R_PPC64_DTPREL16_HIGHERA: | |
14163 | case R_PPC64_DTPREL16_HIGHEST: | |
14164 | case R_PPC64_DTPREL16_HIGHESTA: | |
e1918d23 | 14165 | addend -= htab->elf.tls_sec->vma + DTP_OFFSET; |
411e1bfb AM |
14166 | break; |
14167 | ||
45965137 AM |
14168 | case R_PPC64_ADDR64_LOCAL: |
14169 | addend += PPC64_LOCAL_ENTRY_OFFSET (h != NULL | |
14170 | ? h->elf.other | |
14171 | : sym->st_other); | |
14172 | break; | |
14173 | ||
e515b051 AM |
14174 | case R_PPC64_DTPMOD64: |
14175 | relocation = 1; | |
14176 | addend = 0; | |
14177 | goto dodyn; | |
14178 | ||
411e1bfb | 14179 | case R_PPC64_TPREL64: |
e1918d23 | 14180 | addend -= htab->elf.tls_sec->vma + TP_OFFSET; |
411e1bfb AM |
14181 | goto dodyn; |
14182 | ||
14183 | case R_PPC64_DTPREL64: | |
e1918d23 | 14184 | addend -= htab->elf.tls_sec->vma + DTP_OFFSET; |
411e1bfb AM |
14185 | /* Fall thru */ |
14186 | ||
65f38f15 AM |
14187 | /* Relocations that may need to be propagated if this is a |
14188 | dynamic object. */ | |
04c9666a | 14189 | case R_PPC64_REL30: |
65f38f15 AM |
14190 | case R_PPC64_REL32: |
14191 | case R_PPC64_REL64: | |
14192 | case R_PPC64_ADDR14: | |
14193 | case R_PPC64_ADDR14_BRNTAKEN: | |
14194 | case R_PPC64_ADDR14_BRTAKEN: | |
14195 | case R_PPC64_ADDR16: | |
14196 | case R_PPC64_ADDR16_DS: | |
14197 | case R_PPC64_ADDR16_HA: | |
14198 | case R_PPC64_ADDR16_HI: | |
f9c6b907 AM |
14199 | case R_PPC64_ADDR16_HIGH: |
14200 | case R_PPC64_ADDR16_HIGHA: | |
65f38f15 AM |
14201 | case R_PPC64_ADDR16_HIGHER: |
14202 | case R_PPC64_ADDR16_HIGHERA: | |
14203 | case R_PPC64_ADDR16_HIGHEST: | |
14204 | case R_PPC64_ADDR16_HIGHESTA: | |
14205 | case R_PPC64_ADDR16_LO: | |
14206 | case R_PPC64_ADDR16_LO_DS: | |
14207 | case R_PPC64_ADDR24: | |
65f38f15 AM |
14208 | case R_PPC64_ADDR32: |
14209 | case R_PPC64_ADDR64: | |
14210 | case R_PPC64_UADDR16: | |
14211 | case R_PPC64_UADDR32: | |
14212 | case R_PPC64_UADDR64: | |
411e1bfb | 14213 | dodyn: |
5d1634d7 | 14214 | if ((input_section->flags & SEC_ALLOC) == 0) |
ec338859 AM |
14215 | break; |
14216 | ||
41bd81ab AM |
14217 | if (NO_OPD_RELOCS && is_opd) |
14218 | break; | |
14219 | ||
65f38f15 | 14220 | if ((info->shared |
4e795f50 | 14221 | && (h == NULL |
039b3fef AM |
14222 | || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT |
14223 | || h->elf.root.type != bfd_link_hash_undefweak) | |
1d483afe | 14224 | && (must_be_dyn_reloc (info, r_type) |
039b3fef | 14225 | || !SYMBOL_CALLS_LOCAL (info, &h->elf))) |
f4656909 AM |
14226 | || (ELIMINATE_COPY_RELOCS |
14227 | && !info->shared | |
65f38f15 | 14228 | && h != NULL |
039b3fef | 14229 | && h->elf.dynindx != -1 |
f5385ebf | 14230 | && !h->elf.non_got_ref |
25f23106 AM |
14231 | && !h->elf.def_regular) |
14232 | || (!info->shared | |
14233 | && (h != NULL | |
14234 | ? h->elf.type == STT_GNU_IFUNC | |
14235 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC))) | |
65f38f15 | 14236 | { |
b34976b6 | 14237 | bfd_boolean skip, relocate; |
65f38f15 | 14238 | asection *sreloc; |
1cf1f670 | 14239 | bfd_vma out_off; |
65f38f15 AM |
14240 | |
14241 | /* When generating a dynamic object, these relocations | |
14242 | are copied into the output file to be resolved at run | |
14243 | time. */ | |
14244 | ||
b34976b6 AM |
14245 | skip = FALSE; |
14246 | relocate = FALSE; | |
65f38f15 | 14247 | |
1cf1f670 AM |
14248 | out_off = _bfd_elf_section_offset (output_bfd, info, |
14249 | input_section, rel->r_offset); | |
14250 | if (out_off == (bfd_vma) -1) | |
b34976b6 | 14251 | skip = TRUE; |
1cf1f670 | 14252 | else if (out_off == (bfd_vma) -2) |
b34976b6 | 14253 | skip = TRUE, relocate = TRUE; |
1cf1f670 AM |
14254 | out_off += (input_section->output_section->vma |
14255 | + input_section->output_offset); | |
14256 | outrel.r_offset = out_off; | |
411e1bfb | 14257 | outrel.r_addend = rel->r_addend; |
65f38f15 | 14258 | |
1cf1f670 AM |
14259 | /* Optimize unaligned reloc use. */ |
14260 | if ((r_type == R_PPC64_ADDR64 && (out_off & 7) != 0) | |
14261 | || (r_type == R_PPC64_UADDR64 && (out_off & 7) == 0)) | |
14262 | r_type ^= R_PPC64_ADDR64 ^ R_PPC64_UADDR64; | |
14263 | else if ((r_type == R_PPC64_ADDR32 && (out_off & 3) != 0) | |
14264 | || (r_type == R_PPC64_UADDR32 && (out_off & 3) == 0)) | |
14265 | r_type ^= R_PPC64_ADDR32 ^ R_PPC64_UADDR32; | |
14266 | else if ((r_type == R_PPC64_ADDR16 && (out_off & 1) != 0) | |
14267 | || (r_type == R_PPC64_UADDR16 && (out_off & 1) == 0)) | |
14268 | r_type ^= R_PPC64_ADDR16 ^ R_PPC64_UADDR16; | |
14269 | ||
65f38f15 | 14270 | if (skip) |
0bb2d96a | 14271 | memset (&outrel, 0, sizeof outrel); |
afe397ea | 14272 | else if (!SYMBOL_REFERENCES_LOCAL (info, &h->elf) |
0b13192e AM |
14273 | && !is_opd |
14274 | && r_type != R_PPC64_TOC) | |
14acf4dc MR |
14275 | { |
14276 | BFD_ASSERT (h->elf.dynindx != -1); | |
14277 | outrel.r_info = ELF64_R_INFO (h->elf.dynindx, r_type); | |
14278 | } | |
65f38f15 AM |
14279 | else |
14280 | { | |
41bd81ab AM |
14281 | /* This symbol is local, or marked to become local, |
14282 | or this is an opd section reloc which must point | |
14283 | at a local function. */ | |
65f38f15 | 14284 | outrel.r_addend += relocation; |
e86ce104 | 14285 | if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC) |
65f38f15 | 14286 | { |
3fad3c7c | 14287 | if (is_opd && h != NULL) |
afbe61cf AM |
14288 | { |
14289 | /* Lie about opd entries. This case occurs | |
14290 | when building shared libraries and we | |
14291 | reference a function in another shared | |
3fad3c7c AM |
14292 | lib. The same thing happens for a weak |
14293 | definition in an application that's | |
14294 | overridden by a strong definition in a | |
14295 | shared lib. (I believe this is a generic | |
14296 | bug in binutils handling of weak syms.) | |
14297 | In these cases we won't use the opd | |
1e2f5b6e | 14298 | entry in this lib. */ |
b34976b6 | 14299 | unresolved_reloc = FALSE; |
afbe61cf | 14300 | } |
25f23106 AM |
14301 | if (!is_opd |
14302 | && r_type == R_PPC64_ADDR64 | |
14303 | && (h != NULL | |
14304 | ? h->elf.type == STT_GNU_IFUNC | |
14305 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)) | |
14306 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE); | |
14307 | else | |
14308 | { | |
14309 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
81407a69 | 14310 | |
25f23106 AM |
14311 | /* We need to relocate .opd contents for ld.so. |
14312 | Prelink also wants simple and consistent rules | |
14313 | for relocs. This make all RELATIVE relocs have | |
14314 | *r_offset equal to r_addend. */ | |
14315 | relocate = TRUE; | |
14316 | } | |
65f38f15 AM |
14317 | } |
14318 | else | |
14319 | { | |
14320 | long indx = 0; | |
14321 | ||
25f23106 AM |
14322 | if (h != NULL |
14323 | ? h->elf.type == STT_GNU_IFUNC | |
14324 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
14325 | { | |
25f53a85 | 14326 | info->callbacks->einfo |
bc30df16 AM |
14327 | (_("%P: %H: %s for indirect " |
14328 | "function `%T' unsupported\n"), | |
25f53a85 | 14329 | input_bfd, input_section, rel->r_offset, |
25f23106 AM |
14330 | ppc64_elf_howto_table[r_type]->name, |
14331 | sym_name); | |
14332 | ret = FALSE; | |
14333 | } | |
cf35638d | 14334 | else if (r_symndx == STN_UNDEF || bfd_is_abs_section (sec)) |
65f38f15 AM |
14335 | ; |
14336 | else if (sec == NULL || sec->owner == NULL) | |
14337 | { | |
14338 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 14339 | return FALSE; |
65f38f15 AM |
14340 | } |
14341 | else | |
14342 | { | |
14343 | asection *osec; | |
14344 | ||
14345 | osec = sec->output_section; | |
14346 | indx = elf_section_data (osec)->dynindx; | |
14347 | ||
74541ad4 AM |
14348 | if (indx == 0) |
14349 | { | |
14350 | if ((osec->flags & SEC_READONLY) == 0 | |
14351 | && htab->elf.data_index_section != NULL) | |
14352 | osec = htab->elf.data_index_section; | |
14353 | else | |
14354 | osec = htab->elf.text_index_section; | |
14355 | indx = elf_section_data (osec)->dynindx; | |
14356 | } | |
14357 | BFD_ASSERT (indx != 0); | |
14358 | ||
65f38f15 AM |
14359 | /* We are turning this relocation into one |
14360 | against a section symbol, so subtract out | |
14361 | the output section's address but not the | |
14362 | offset of the input section in the output | |
14363 | section. */ | |
14364 | outrel.r_addend -= osec->vma; | |
14365 | } | |
14366 | ||
14367 | outrel.r_info = ELF64_R_INFO (indx, r_type); | |
14368 | } | |
14369 | } | |
14370 | ||
14371 | sreloc = elf_section_data (input_section)->sreloc; | |
19e08130 AM |
14372 | if (h != NULL |
14373 | ? h->elf.type == STT_GNU_IFUNC | |
14374 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
33e44f2e | 14375 | sreloc = htab->elf.irelplt; |
65f38f15 AM |
14376 | if (sreloc == NULL) |
14377 | abort (); | |
14378 | ||
dfbb6ac9 AM |
14379 | if (sreloc->reloc_count * sizeof (Elf64_External_Rela) |
14380 | >= sreloc->size) | |
14381 | abort (); | |
947216bf AM |
14382 | loc = sreloc->contents; |
14383 | loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela); | |
65f38f15 AM |
14384 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); |
14385 | ||
14386 | /* If this reloc is against an external symbol, it will | |
14387 | be computed at runtime, so there's no need to do | |
81407a69 AM |
14388 | anything now. However, for the sake of prelink ensure |
14389 | that the section contents are a known value. */ | |
65f38f15 | 14390 | if (! relocate) |
81407a69 AM |
14391 | { |
14392 | unresolved_reloc = FALSE; | |
14393 | /* The value chosen here is quite arbitrary as ld.so | |
14394 | ignores section contents except for the special | |
14395 | case of .opd where the contents might be accessed | |
14396 | before relocation. Choose zero, as that won't | |
14397 | cause reloc overflow. */ | |
14398 | relocation = 0; | |
14399 | addend = 0; | |
14400 | /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs | |
14401 | to improve backward compatibility with older | |
14402 | versions of ld. */ | |
14403 | if (r_type == R_PPC64_ADDR64) | |
14404 | addend = outrel.r_addend; | |
14405 | /* Adjust pc_relative relocs to have zero in *r_offset. */ | |
4ce794b7 | 14406 | else if (ppc64_elf_howto_table[r_type]->pc_relative) |
000732f7 AM |
14407 | addend = (input_section->output_section->vma |
14408 | + input_section->output_offset | |
14409 | + rel->r_offset); | |
81407a69 | 14410 | } |
65f38f15 | 14411 | } |
5bd4f169 AM |
14412 | break; |
14413 | ||
65f38f15 AM |
14414 | case R_PPC64_COPY: |
14415 | case R_PPC64_GLOB_DAT: | |
14416 | case R_PPC64_JMP_SLOT: | |
25f23106 | 14417 | case R_PPC64_JMP_IREL: |
65f38f15 AM |
14418 | case R_PPC64_RELATIVE: |
14419 | /* We shouldn't ever see these dynamic relocs in relocatable | |
14420 | files. */ | |
ae9a127f | 14421 | /* Fall through. */ |
65f38f15 AM |
14422 | |
14423 | case R_PPC64_PLTGOT16: | |
14424 | case R_PPC64_PLTGOT16_DS: | |
14425 | case R_PPC64_PLTGOT16_HA: | |
14426 | case R_PPC64_PLTGOT16_HI: | |
14427 | case R_PPC64_PLTGOT16_LO: | |
14428 | case R_PPC64_PLTGOT16_LO_DS: | |
14429 | case R_PPC64_PLTREL32: | |
14430 | case R_PPC64_PLTREL64: | |
14431 | /* These ones haven't been implemented yet. */ | |
14432 | ||
25f53a85 | 14433 | info->callbacks->einfo |
bc30df16 | 14434 | (_("%P: %B: %s is not supported for `%T'\n"), |
d003868e | 14435 | input_bfd, |
4ce794b7 | 14436 | ppc64_elf_howto_table[r_type]->name, sym_name); |
5bd4f169 AM |
14437 | |
14438 | bfd_set_error (bfd_error_invalid_operation); | |
b34976b6 | 14439 | ret = FALSE; |
5bd4f169 | 14440 | continue; |
65f38f15 | 14441 | } |
5bd4f169 | 14442 | |
67f0cbdb AM |
14443 | /* Multi-instruction sequences that access the TOC can be |
14444 | optimized, eg. addis ra,r2,0; addi rb,ra,x; | |
14445 | to nop; addi rb,r2,x; */ | |
14446 | switch (r_type) | |
14447 | { | |
14448 | default: | |
14449 | break; | |
14450 | ||
14451 | case R_PPC64_GOT_TLSLD16_HI: | |
14452 | case R_PPC64_GOT_TLSGD16_HI: | |
14453 | case R_PPC64_GOT_TPREL16_HI: | |
14454 | case R_PPC64_GOT_DTPREL16_HI: | |
14455 | case R_PPC64_GOT16_HI: | |
14456 | case R_PPC64_TOC16_HI: | |
14457 | /* These relocs would only be useful if building up an | |
14458 | offset to later add to r2, perhaps in an indexed | |
14459 | addressing mode instruction. Don't try to optimize. | |
14460 | Unfortunately, the possibility of someone building up an | |
14461 | offset like this or even with the HA relocs, means that | |
14462 | we need to check the high insn when optimizing the low | |
14463 | insn. */ | |
14464 | break; | |
14465 | ||
14466 | case R_PPC64_GOT_TLSLD16_HA: | |
14467 | case R_PPC64_GOT_TLSGD16_HA: | |
14468 | case R_PPC64_GOT_TPREL16_HA: | |
14469 | case R_PPC64_GOT_DTPREL16_HA: | |
14470 | case R_PPC64_GOT16_HA: | |
14471 | case R_PPC64_TOC16_HA: | |
98528052 | 14472 | if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000 |
560c8763 | 14473 | && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn) |
98528052 AM |
14474 | { |
14475 | bfd_byte *p = contents + (rel->r_offset & ~3); | |
14476 | bfd_put_32 (input_bfd, NOP, p); | |
14477 | } | |
67f0cbdb AM |
14478 | break; |
14479 | ||
14480 | case R_PPC64_GOT_TLSLD16_LO: | |
14481 | case R_PPC64_GOT_TLSGD16_LO: | |
14482 | case R_PPC64_GOT_TPREL16_LO_DS: | |
14483 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
14484 | case R_PPC64_GOT16_LO: | |
14485 | case R_PPC64_GOT16_LO_DS: | |
14486 | case R_PPC64_TOC16_LO: | |
14487 | case R_PPC64_TOC16_LO_DS: | |
98528052 | 14488 | if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000 |
560c8763 | 14489 | && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn) |
67f0cbdb AM |
14490 | { |
14491 | bfd_byte *p = contents + (rel->r_offset & ~3); | |
14492 | insn = bfd_get_32 (input_bfd, p); | |
560c8763 AM |
14493 | if ((insn & (0x3f << 26)) == 12u << 26 /* addic */) |
14494 | { | |
14495 | /* Transform addic to addi when we change reg. */ | |
14496 | insn &= ~((0x3f << 26) | (0x1f << 16)); | |
14497 | insn |= (14u << 26) | (2 << 16); | |
14498 | } | |
14499 | else | |
67f0cbdb | 14500 | { |
98528052 AM |
14501 | insn &= ~(0x1f << 16); |
14502 | insn |= 2 << 16; | |
67f0cbdb | 14503 | } |
560c8763 | 14504 | bfd_put_32 (input_bfd, insn, p); |
67f0cbdb AM |
14505 | } |
14506 | break; | |
14507 | } | |
14508 | ||
65f38f15 AM |
14509 | /* Do any further special processing. */ |
14510 | switch (r_type) | |
14511 | { | |
14512 | default: | |
14513 | break; | |
14514 | ||
25f23106 | 14515 | case R_PPC64_REL16_HA: |
f9c6b907 AM |
14516 | case R_PPC64_ADDR16_HA: |
14517 | case R_PPC64_ADDR16_HIGHA: | |
65f38f15 AM |
14518 | case R_PPC64_ADDR16_HIGHERA: |
14519 | case R_PPC64_ADDR16_HIGHESTA: | |
65f38f15 AM |
14520 | case R_PPC64_TOC16_HA: |
14521 | case R_PPC64_SECTOFF_HA: | |
411e1bfb | 14522 | case R_PPC64_TPREL16_HA: |
f9c6b907 | 14523 | case R_PPC64_TPREL16_HIGHA: |
411e1bfb | 14524 | case R_PPC64_TPREL16_HIGHERA: |
411e1bfb | 14525 | case R_PPC64_TPREL16_HIGHESTA: |
f9c6b907 AM |
14526 | case R_PPC64_DTPREL16_HA: |
14527 | case R_PPC64_DTPREL16_HIGHA: | |
411e1bfb | 14528 | case R_PPC64_DTPREL16_HIGHERA: |
411e1bfb | 14529 | case R_PPC64_DTPREL16_HIGHESTA: |
65f38f15 AM |
14530 | /* It's just possible that this symbol is a weak symbol |
14531 | that's not actually defined anywhere. In that case, | |
14532 | 'sec' would be NULL, and we should leave the symbol | |
14533 | alone (it will be set to zero elsewhere in the link). */ | |
5c5f6e17 AM |
14534 | if (sec == NULL) |
14535 | break; | |
14536 | /* Fall thru */ | |
14537 | ||
14538 | case R_PPC64_GOT16_HA: | |
14539 | case R_PPC64_PLTGOT16_HA: | |
14540 | case R_PPC64_PLT16_HA: | |
14541 | case R_PPC64_GOT_TLSGD16_HA: | |
14542 | case R_PPC64_GOT_TLSLD16_HA: | |
14543 | case R_PPC64_GOT_TPREL16_HA: | |
14544 | case R_PPC64_GOT_DTPREL16_HA: | |
14545 | /* Add 0x10000 if sign bit in 0:15 is set. | |
14546 | Bits 0:15 are not used. */ | |
14547 | addend += 0x8000; | |
65f38f15 AM |
14548 | break; |
14549 | ||
14550 | case R_PPC64_ADDR16_DS: | |
14551 | case R_PPC64_ADDR16_LO_DS: | |
14552 | case R_PPC64_GOT16_DS: | |
14553 | case R_PPC64_GOT16_LO_DS: | |
14554 | case R_PPC64_PLT16_LO_DS: | |
14555 | case R_PPC64_SECTOFF_DS: | |
14556 | case R_PPC64_SECTOFF_LO_DS: | |
14557 | case R_PPC64_TOC16_DS: | |
14558 | case R_PPC64_TOC16_LO_DS: | |
14559 | case R_PPC64_PLTGOT16_DS: | |
14560 | case R_PPC64_PLTGOT16_LO_DS: | |
411e1bfb AM |
14561 | case R_PPC64_GOT_TPREL16_DS: |
14562 | case R_PPC64_GOT_TPREL16_LO_DS: | |
14563 | case R_PPC64_GOT_DTPREL16_DS: | |
14564 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
14565 | case R_PPC64_TPREL16_DS: | |
14566 | case R_PPC64_TPREL16_LO_DS: | |
14567 | case R_PPC64_DTPREL16_DS: | |
14568 | case R_PPC64_DTPREL16_LO_DS: | |
adadcc0c AM |
14569 | insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3)); |
14570 | mask = 3; | |
14571 | /* If this reloc is against an lq insn, then the value must be | |
14572 | a multiple of 16. This is somewhat of a hack, but the | |
14573 | "correct" way to do this by defining _DQ forms of all the | |
14574 | _DS relocs bloats all reloc switches in this file. It | |
14575 | doesn't seem to make much sense to use any of these relocs | |
14576 | in data, so testing the insn should be safe. */ | |
494dac0c | 14577 | if ((insn & (0x3f << 26)) == (56u << 26)) |
adadcc0c AM |
14578 | mask = 15; |
14579 | if (((relocation + addend) & mask) != 0) | |
65f38f15 | 14580 | { |
25f53a85 | 14581 | info->callbacks->einfo |
8de848d8 | 14582 | (_("%P: %H: error: %s not a multiple of %u\n"), |
25f53a85 | 14583 | input_bfd, input_section, rel->r_offset, |
4ce794b7 | 14584 | ppc64_elf_howto_table[r_type]->name, |
adadcc0c | 14585 | mask + 1); |
65f38f15 | 14586 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 14587 | ret = FALSE; |
65f38f15 AM |
14588 | continue; |
14589 | } | |
14590 | break; | |
5bd4f169 AM |
14591 | } |
14592 | ||
239e1f3a AM |
14593 | /* Dynamic relocs are not propagated for SEC_DEBUGGING sections |
14594 | because such sections are not SEC_ALLOC and thus ld.so will | |
14595 | not process them. */ | |
65f38f15 | 14596 | if (unresolved_reloc |
239e1f3a | 14597 | && !((input_section->flags & SEC_DEBUGGING) != 0 |
1d5316ab AM |
14598 | && h->elf.def_dynamic) |
14599 | && _bfd_elf_section_offset (output_bfd, info, input_section, | |
14600 | rel->r_offset) != (bfd_vma) -1) | |
9c07fe7c | 14601 | { |
25f53a85 | 14602 | info->callbacks->einfo |
bc30df16 | 14603 | (_("%P: %H: unresolvable %s against `%T'\n"), |
25f53a85 | 14604 | input_bfd, input_section, rel->r_offset, |
7b609f53 | 14605 | ppc64_elf_howto_table[(int) r_type]->name, |
039b3fef | 14606 | h->elf.root.root.string); |
b34976b6 | 14607 | ret = FALSE; |
9c07fe7c | 14608 | } |
5bd4f169 | 14609 | |
65f38f15 | 14610 | r = _bfd_final_link_relocate (ppc64_elf_howto_table[(int) r_type], |
5bd4f169 AM |
14611 | input_bfd, |
14612 | input_section, | |
14613 | contents, | |
411e1bfb | 14614 | rel->r_offset, |
5bd4f169 AM |
14615 | relocation, |
14616 | addend); | |
14617 | ||
ef60b7ff | 14618 | if (r != bfd_reloc_ok) |
5bd4f169 | 14619 | { |
bc30df16 AM |
14620 | char *more_info = NULL; |
14621 | const char *reloc_name = ppc64_elf_howto_table[r_type]->name; | |
14622 | ||
14623 | if (reloc_dest != DEST_NORMAL) | |
14624 | { | |
14625 | more_info = bfd_malloc (strlen (reloc_name) + 8); | |
14626 | if (more_info != NULL) | |
14627 | { | |
14628 | strcpy (more_info, reloc_name); | |
14629 | strcat (more_info, (reloc_dest == DEST_OPD | |
14630 | ? " (OPD)" : " (stub)")); | |
14631 | reloc_name = more_info; | |
14632 | } | |
14633 | } | |
14634 | ||
cd27b276 | 14635 | if (r == bfd_reloc_overflow) |
5bd4f169 | 14636 | { |
cd27b276 AM |
14637 | if (warned) |
14638 | continue; | |
14639 | if (h != NULL | |
039b3fef | 14640 | && h->elf.root.type == bfd_link_hash_undefweak |
4ce794b7 | 14641 | && ppc64_elf_howto_table[r_type]->pc_relative) |
5bd4f169 AM |
14642 | { |
14643 | /* Assume this is a call protected by other code that | |
14644 | detects the symbol is undefined. If this is the case, | |
14645 | we can safely ignore the overflow. If not, the | |
14646 | program is hosed anyway, and a little warning isn't | |
14647 | going to help. */ | |
14648 | ||
14649 | continue; | |
14650 | } | |
14651 | ||
ef60b7ff | 14652 | if (!((*info->callbacks->reloc_overflow) |
bc30df16 AM |
14653 | (info, &h->elf.root, sym_name, |
14654 | reloc_name, orig_rel.r_addend, | |
14655 | input_bfd, input_section, rel->r_offset))) | |
b34976b6 | 14656 | return FALSE; |
ef60b7ff AM |
14657 | } |
14658 | else | |
14659 | { | |
25f53a85 | 14660 | info->callbacks->einfo |
bc30df16 | 14661 | (_("%P: %H: %s against `%T': error %d\n"), |
25f53a85 | 14662 | input_bfd, input_section, rel->r_offset, |
bc30df16 | 14663 | reloc_name, sym_name, (int) r); |
b34976b6 | 14664 | ret = FALSE; |
ef60b7ff | 14665 | } |
bc30df16 AM |
14666 | if (more_info != NULL) |
14667 | free (more_info); | |
5bd4f169 | 14668 | } |
5bd4f169 AM |
14669 | } |
14670 | ||
645ea6a9 AM |
14671 | /* If we're emitting relocations, then shortly after this function |
14672 | returns, reloc offsets and addends for this section will be | |
14673 | adjusted. Worse, reloc symbol indices will be for the output | |
8860955f AM |
14674 | file rather than the input. Save a copy of the relocs for |
14675 | opd_entry_value. */ | |
4cc603a5 | 14676 | if (is_opd && (info->emitrelocations || info->relocatable)) |
8860955f AM |
14677 | { |
14678 | bfd_size_type amt; | |
14679 | amt = input_section->reloc_count * sizeof (Elf_Internal_Rela); | |
14680 | rel = bfd_alloc (input_bfd, amt); | |
729eabd5 AM |
14681 | BFD_ASSERT (ppc64_elf_tdata (input_bfd)->opd.relocs == NULL); |
14682 | ppc64_elf_tdata (input_bfd)->opd.relocs = rel; | |
8860955f AM |
14683 | if (rel == NULL) |
14684 | return FALSE; | |
14685 | memcpy (rel, relocs, amt); | |
14686 | } | |
5bd4f169 AM |
14687 | return ret; |
14688 | } | |
14689 | ||
754021d0 AM |
14690 | /* Adjust the value of any local symbols in opd sections. */ |
14691 | ||
6e0b88f1 | 14692 | static int |
754021d0 AM |
14693 | ppc64_elf_output_symbol_hook (struct bfd_link_info *info, |
14694 | const char *name ATTRIBUTE_UNUSED, | |
14695 | Elf_Internal_Sym *elfsym, | |
14696 | asection *input_sec, | |
14697 | struct elf_link_hash_entry *h) | |
14698 | { | |
74f0fb50 AM |
14699 | struct _opd_sec_data *opd; |
14700 | long adjust; | |
754021d0 AM |
14701 | bfd_vma value; |
14702 | ||
4025353c | 14703 | if (h != NULL) |
6e0b88f1 | 14704 | return 1; |
4025353c | 14705 | |
74f0fb50 AM |
14706 | opd = get_opd_info (input_sec); |
14707 | if (opd == NULL || opd->adjust == NULL) | |
6e0b88f1 | 14708 | return 1; |
754021d0 AM |
14709 | |
14710 | value = elfsym->st_value - input_sec->output_offset; | |
14711 | if (!info->relocatable) | |
14712 | value -= input_sec->output_section->vma; | |
14713 | ||
74f0fb50 | 14714 | adjust = opd->adjust[value / 8]; |
4025353c | 14715 | if (adjust == -1) |
6e0b88f1 AM |
14716 | return 2; |
14717 | ||
14718 | elfsym->st_value += adjust; | |
14719 | return 1; | |
754021d0 AM |
14720 | } |
14721 | ||
5bd4f169 AM |
14722 | /* Finish up dynamic symbol handling. We set the contents of various |
14723 | dynamic sections here. */ | |
14724 | ||
b34976b6 | 14725 | static bfd_boolean |
4ce794b7 AM |
14726 | ppc64_elf_finish_dynamic_symbol (bfd *output_bfd, |
14727 | struct bfd_link_info *info, | |
14728 | struct elf_link_hash_entry *h, | |
ab6dce23 | 14729 | Elf_Internal_Sym *sym ATTRIBUTE_UNUSED) |
5bd4f169 | 14730 | { |
65f38f15 | 14731 | struct ppc_link_hash_table *htab; |
8387904d AM |
14732 | struct plt_entry *ent; |
14733 | Elf_Internal_Rela rela; | |
14734 | bfd_byte *loc; | |
5bd4f169 | 14735 | |
65f38f15 | 14736 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
14737 | if (htab == NULL) |
14738 | return FALSE; | |
5bd4f169 | 14739 | |
8387904d AM |
14740 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) |
14741 | if (ent->plt.offset != (bfd_vma) -1) | |
14742 | { | |
14743 | /* This symbol has an entry in the procedure linkage | |
14744 | table. Set it up. */ | |
e054468f AM |
14745 | if (!htab->elf.dynamic_sections_created |
14746 | || h->dynindx == -1) | |
14747 | { | |
14748 | BFD_ASSERT (h->type == STT_GNU_IFUNC | |
14749 | && h->def_regular | |
14750 | && (h->root.type == bfd_link_hash_defined | |
14751 | || h->root.type == bfd_link_hash_defweak)); | |
33e44f2e AM |
14752 | rela.r_offset = (htab->elf.iplt->output_section->vma |
14753 | + htab->elf.iplt->output_offset | |
25f23106 | 14754 | + ent->plt.offset); |
ee67d69a AM |
14755 | if (htab->opd_abi) |
14756 | rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL); | |
14757 | else | |
14758 | rela.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE); | |
e054468f AM |
14759 | rela.r_addend = (h->root.u.def.value |
14760 | + h->root.u.def.section->output_offset | |
14761 | + h->root.u.def.section->output_section->vma | |
14762 | + ent->addend); | |
33e44f2e AM |
14763 | loc = (htab->elf.irelplt->contents |
14764 | + (htab->elf.irelplt->reloc_count++ | |
25f23106 | 14765 | * sizeof (Elf64_External_Rela))); |
e054468f AM |
14766 | } |
14767 | else | |
14768 | { | |
33e44f2e AM |
14769 | rela.r_offset = (htab->elf.splt->output_section->vma |
14770 | + htab->elf.splt->output_offset | |
25f23106 | 14771 | + ent->plt.offset); |
e054468f AM |
14772 | rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT); |
14773 | rela.r_addend = ent->addend; | |
33e44f2e | 14774 | loc = (htab->elf.srelplt->contents |
b9e5796b AM |
14775 | + ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE (htab)) |
14776 | / PLT_ENTRY_SIZE (htab) * sizeof (Elf64_External_Rela))); | |
e054468f | 14777 | } |
8387904d | 14778 | bfd_elf64_swap_reloca_out (output_bfd, &rela, loc); |
a345bc8d AM |
14779 | |
14780 | if (!htab->opd_abi) | |
14781 | { | |
14782 | if (!h->def_regular) | |
14783 | { | |
14784 | /* Mark the symbol as undefined, rather than as | |
14785 | defined in glink. Leave the value if there were | |
14786 | any relocations where pointer equality matters | |
14787 | (this is a clue for the dynamic linker, to make | |
14788 | function pointer comparisons work between an | |
14789 | application and shared library), otherwise set it | |
14790 | to zero. */ | |
14791 | sym->st_shndx = SHN_UNDEF; | |
14792 | if (!h->pointer_equality_needed) | |
14793 | sym->st_value = 0; | |
14794 | else if (!h->ref_regular_nonweak) | |
14795 | { | |
14796 | /* This breaks function pointer comparisons, but | |
14797 | that is better than breaking tests for a NULL | |
14798 | function pointer. */ | |
14799 | sym->st_value = 0; | |
14800 | } | |
14801 | } | |
14802 | } | |
8387904d | 14803 | } |
5bd4f169 | 14804 | |
f5385ebf | 14805 | if (h->needs_copy) |
5bd4f169 | 14806 | { |
65f38f15 | 14807 | /* This symbol needs a copy reloc. Set it up. */ |
5bd4f169 | 14808 | |
65f38f15 AM |
14809 | if (h->dynindx == -1 |
14810 | || (h->root.type != bfd_link_hash_defined | |
14811 | && h->root.type != bfd_link_hash_defweak) | |
4ce794b7 | 14812 | || htab->relbss == NULL) |
65f38f15 | 14813 | abort (); |
5bd4f169 AM |
14814 | |
14815 | rela.r_offset = (h->root.u.def.value | |
14816 | + h->root.u.def.section->output_section->vma | |
14817 | + h->root.u.def.section->output_offset); | |
14818 | rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY); | |
14819 | rela.r_addend = 0; | |
4ce794b7 AM |
14820 | loc = htab->relbss->contents; |
14821 | loc += htab->relbss->reloc_count++ * sizeof (Elf64_External_Rela); | |
65f38f15 | 14822 | bfd_elf64_swap_reloca_out (output_bfd, &rela, loc); |
5bd4f169 AM |
14823 | } |
14824 | ||
b34976b6 | 14825 | return TRUE; |
5bd4f169 AM |
14826 | } |
14827 | ||
65f38f15 AM |
14828 | /* Used to decide how to sort relocs in an optimal manner for the |
14829 | dynamic linker, before writing them out. */ | |
14830 | ||
14831 | static enum elf_reloc_type_class | |
7e612e98 AM |
14832 | ppc64_elf_reloc_type_class (const struct bfd_link_info *info, |
14833 | const asection *rel_sec, | |
14834 | const Elf_Internal_Rela *rela) | |
65f38f15 | 14835 | { |
04c9666a | 14836 | enum elf_ppc64_reloc_type r_type; |
7e612e98 AM |
14837 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
14838 | ||
33e44f2e | 14839 | if (rel_sec == htab->elf.irelplt) |
7e612e98 | 14840 | return reloc_class_ifunc; |
a33d1f77 | 14841 | |
4ce794b7 | 14842 | r_type = ELF64_R_TYPE (rela->r_info); |
a33d1f77 | 14843 | switch (r_type) |
65f38f15 AM |
14844 | { |
14845 | case R_PPC64_RELATIVE: | |
14846 | return reloc_class_relative; | |
14847 | case R_PPC64_JMP_SLOT: | |
14848 | return reloc_class_plt; | |
14849 | case R_PPC64_COPY: | |
14850 | return reloc_class_copy; | |
14851 | default: | |
14852 | return reloc_class_normal; | |
14853 | } | |
14854 | } | |
14855 | ||
5bd4f169 AM |
14856 | /* Finish up the dynamic sections. */ |
14857 | ||
b34976b6 | 14858 | static bfd_boolean |
4ce794b7 AM |
14859 | ppc64_elf_finish_dynamic_sections (bfd *output_bfd, |
14860 | struct bfd_link_info *info) | |
5bd4f169 | 14861 | { |
65f38f15 AM |
14862 | struct ppc_link_hash_table *htab; |
14863 | bfd *dynobj; | |
5bd4f169 | 14864 | asection *sdyn; |
5bd4f169 | 14865 | |
65f38f15 | 14866 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
14867 | if (htab == NULL) |
14868 | return FALSE; | |
14869 | ||
65f38f15 | 14870 | dynobj = htab->elf.dynobj; |
3d4d4302 | 14871 | sdyn = bfd_get_linker_section (dynobj, ".dynamic"); |
5bd4f169 | 14872 | |
65f38f15 | 14873 | if (htab->elf.dynamic_sections_created) |
5bd4f169 | 14874 | { |
5bd4f169 AM |
14875 | Elf64_External_Dyn *dyncon, *dynconend; |
14876 | ||
33e44f2e | 14877 | if (sdyn == NULL || htab->elf.sgot == NULL) |
65f38f15 | 14878 | abort (); |
5bd4f169 AM |
14879 | |
14880 | dyncon = (Elf64_External_Dyn *) sdyn->contents; | |
eea6121a | 14881 | dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size); |
5bd4f169 AM |
14882 | for (; dyncon < dynconend; dyncon++) |
14883 | { | |
14884 | Elf_Internal_Dyn dyn; | |
19397422 | 14885 | asection *s; |
5bd4f169 AM |
14886 | |
14887 | bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn); | |
14888 | ||
14889 | switch (dyn.d_tag) | |
14890 | { | |
65f38f15 AM |
14891 | default: |
14892 | continue; | |
5bd4f169 | 14893 | |
5d1634d7 | 14894 | case DT_PPC64_GLINK: |
4ce794b7 | 14895 | s = htab->glink; |
6348e046 | 14896 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
ad8e1ba5 AM |
14897 | /* We stupidly defined DT_PPC64_GLINK to be the start |
14898 | of glink rather than the first entry point, which is | |
14899 | what ld.so needs, and now have a bigger stub to | |
14900 | support automatic multiple TOCs. */ | |
b9e5796b | 14901 | dyn.d_un.d_ptr += GLINK_CALL_STUB_SIZE - 8 * 4; |
5d1634d7 AM |
14902 | break; |
14903 | ||
19397422 AM |
14904 | case DT_PPC64_OPD: |
14905 | s = bfd_get_section_by_name (output_bfd, ".opd"); | |
6348e046 AM |
14906 | if (s == NULL) |
14907 | continue; | |
14908 | dyn.d_un.d_ptr = s->vma; | |
19397422 AM |
14909 | break; |
14910 | ||
e8910a83 AM |
14911 | case DT_PPC64_OPT: |
14912 | if (htab->do_multi_toc && htab->multi_toc_needed) | |
14913 | dyn.d_un.d_val |= PPC64_OPT_MULTI_TOC; | |
14914 | break; | |
14915 | ||
19397422 AM |
14916 | case DT_PPC64_OPDSZ: |
14917 | s = bfd_get_section_by_name (output_bfd, ".opd"); | |
6348e046 AM |
14918 | if (s == NULL) |
14919 | continue; | |
eea6121a | 14920 | dyn.d_un.d_val = s->size; |
19397422 AM |
14921 | break; |
14922 | ||
65f38f15 | 14923 | case DT_PLTGOT: |
33e44f2e | 14924 | s = htab->elf.splt; |
6348e046 | 14925 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
65f38f15 AM |
14926 | break; |
14927 | ||
14928 | case DT_JMPREL: | |
33e44f2e | 14929 | s = htab->elf.srelplt; |
6348e046 | 14930 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
65f38f15 | 14931 | break; |
5bd4f169 | 14932 | |
65f38f15 | 14933 | case DT_PLTRELSZ: |
33e44f2e | 14934 | dyn.d_un.d_val = htab->elf.srelplt->size; |
5d1634d7 AM |
14935 | break; |
14936 | ||
14937 | case DT_RELASZ: | |
14938 | /* Don't count procedure linkage table relocs in the | |
14939 | overall reloc count. */ | |
33e44f2e | 14940 | s = htab->elf.srelplt; |
6348e046 AM |
14941 | if (s == NULL) |
14942 | continue; | |
eea6121a | 14943 | dyn.d_un.d_val -= s->size; |
6348e046 AM |
14944 | break; |
14945 | ||
14946 | case DT_RELA: | |
14947 | /* We may not be using the standard ELF linker script. | |
14948 | If .rela.plt is the first .rela section, we adjust | |
14949 | DT_RELA to not include it. */ | |
33e44f2e | 14950 | s = htab->elf.srelplt; |
6348e046 AM |
14951 | if (s == NULL) |
14952 | continue; | |
14953 | if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset) | |
14954 | continue; | |
eea6121a | 14955 | dyn.d_un.d_ptr += s->size; |
65f38f15 | 14956 | break; |
5bd4f169 | 14957 | } |
5bd4f169 | 14958 | |
65f38f15 | 14959 | bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); |
5bd4f169 | 14960 | } |
5bd4f169 AM |
14961 | } |
14962 | ||
33e44f2e | 14963 | if (htab->elf.sgot != NULL && htab->elf.sgot->size != 0) |
5d1634d7 AM |
14964 | { |
14965 | /* Fill in the first entry in the global offset table. | |
14966 | We use it to hold the link-time TOCbase. */ | |
14967 | bfd_put_64 (output_bfd, | |
60ee0d4a | 14968 | elf_gp (output_bfd) + TOC_BASE_OFF, |
33e44f2e | 14969 | htab->elf.sgot->contents); |
5d1634d7 AM |
14970 | |
14971 | /* Set .got entry size. */ | |
33e44f2e | 14972 | elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize = 8; |
5d1634d7 AM |
14973 | } |
14974 | ||
33e44f2e | 14975 | if (htab->elf.splt != NULL && htab->elf.splt->size != 0) |
5d1634d7 AM |
14976 | { |
14977 | /* Set .plt entry size. */ | |
33e44f2e | 14978 | elf_section_data (htab->elf.splt->output_section)->this_hdr.sh_entsize |
b9e5796b | 14979 | = PLT_ENTRY_SIZE (htab); |
5d1634d7 AM |
14980 | } |
14981 | ||
84f5d08e AM |
14982 | /* brlt is SEC_LINKER_CREATED, so we need to write out relocs for |
14983 | brlt ourselves if emitrelocations. */ | |
14984 | if (htab->brlt != NULL | |
14985 | && htab->brlt->reloc_count != 0 | |
14986 | && !_bfd_elf_link_output_relocs (output_bfd, | |
14987 | htab->brlt, | |
d4730f92 | 14988 | elf_section_data (htab->brlt)->rela.hdr, |
84f5d08e AM |
14989 | elf_section_data (htab->brlt)->relocs, |
14990 | NULL)) | |
14991 | return FALSE; | |
14992 | ||
176a0d42 AM |
14993 | if (htab->glink != NULL |
14994 | && htab->glink->reloc_count != 0 | |
14995 | && !_bfd_elf_link_output_relocs (output_bfd, | |
14996 | htab->glink, | |
d4730f92 | 14997 | elf_section_data (htab->glink)->rela.hdr, |
176a0d42 AM |
14998 | elf_section_data (htab->glink)->relocs, |
14999 | NULL)) | |
15000 | return FALSE; | |
15001 | ||
58d180e8 AM |
15002 | |
15003 | if (htab->glink_eh_frame != NULL | |
dbaa2011 | 15004 | && htab->glink_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME |
58d180e8 AM |
15005 | && !_bfd_elf_write_section_eh_frame (output_bfd, info, |
15006 | htab->glink_eh_frame, | |
15007 | htab->glink_eh_frame->contents)) | |
15008 | return FALSE; | |
15009 | ||
e717da7e | 15010 | /* We need to handle writing out multiple GOT sections ourselves, |
7b53ace3 AM |
15011 | since we didn't add them to DYNOBJ. We know dynobj is the first |
15012 | bfd. */ | |
e717da7e AM |
15013 | while ((dynobj = dynobj->link_next) != NULL) |
15014 | { | |
15015 | asection *s; | |
7b53ace3 | 15016 | |
0c8d6e5c | 15017 | if (!is_ppc64_elf (dynobj)) |
7b53ace3 AM |
15018 | continue; |
15019 | ||
e717da7e AM |
15020 | s = ppc64_elf_tdata (dynobj)->got; |
15021 | if (s != NULL | |
eea6121a | 15022 | && s->size != 0 |
e717da7e AM |
15023 | && s->output_section != bfd_abs_section_ptr |
15024 | && !bfd_set_section_contents (output_bfd, s->output_section, | |
15025 | s->contents, s->output_offset, | |
eea6121a | 15026 | s->size)) |
e717da7e AM |
15027 | return FALSE; |
15028 | s = ppc64_elf_tdata (dynobj)->relgot; | |
15029 | if (s != NULL | |
eea6121a | 15030 | && s->size != 0 |
e717da7e AM |
15031 | && s->output_section != bfd_abs_section_ptr |
15032 | && !bfd_set_section_contents (output_bfd, s->output_section, | |
15033 | s->contents, s->output_offset, | |
eea6121a | 15034 | s->size)) |
e717da7e AM |
15035 | return FALSE; |
15036 | } | |
f6c52c13 | 15037 | |
b34976b6 | 15038 | return TRUE; |
5bd4f169 AM |
15039 | } |
15040 | ||
5bd4f169 | 15041 | #include "elf64-target.h" |
7b8e7dad AM |
15042 | |
15043 | /* FreeBSD support */ | |
15044 | ||
15045 | #undef TARGET_LITTLE_SYM | |
15046 | #undef TARGET_LITTLE_NAME | |
15047 | ||
15048 | #undef TARGET_BIG_SYM | |
15049 | #define TARGET_BIG_SYM bfd_elf64_powerpc_freebsd_vec | |
15050 | #undef TARGET_BIG_NAME | |
15051 | #define TARGET_BIG_NAME "elf64-powerpc-freebsd" | |
15052 | ||
15053 | #undef ELF_OSABI | |
15054 | #define ELF_OSABI ELFOSABI_FREEBSD | |
15055 | ||
15056 | #undef elf64_bed | |
15057 | #define elf64_bed elf64_powerpc_fbsd_bed | |
15058 | ||
15059 | #include "elf64-target.h" | |
15060 |