Commit | Line | Data |
---|---|---|
5bd4f169 | 1 | /* PowerPC64-specific support for 64-bit ELF. |
3a71aa26 | 2 | Copyright 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, |
fb34365b | 3 | 2009, 2010 Free Software Foundation, Inc. |
5bd4f169 AM |
4 | Written by Linus Nordberg, Swox AB <info@swox.com>, |
5 | based on elf32-ppc.c by Ian Lance Taylor. | |
32ca9640 | 6 | Largely rewritten by Alan Modra. |
5bd4f169 | 7 | |
ae9a127f | 8 | This file is part of BFD, the Binary File Descriptor library. |
5bd4f169 | 9 | |
ae9a127f NC |
10 | This program is free software; you can redistribute it and/or modify |
11 | it under the terms of the GNU General Public License as published by | |
cd123cb7 | 12 | the Free Software Foundation; either version 3 of the License, or |
ae9a127f | 13 | (at your option) any later version. |
5bd4f169 | 14 | |
ae9a127f NC |
15 | This program is distributed in the hope that it will be useful, |
16 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
18 | GNU General Public License for more details. | |
5bd4f169 | 19 | |
4ce794b7 AM |
20 | You should have received a copy of the GNU General Public License along |
21 | with this program; if not, write to the Free Software Foundation, Inc., | |
3e110533 | 22 | 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */ |
5bd4f169 | 23 | |
cd123cb7 | 24 | |
4ce794b7 AM |
25 | /* The 64-bit PowerPC ELF ABI may be found at |
26 | http://www.linuxbase.org/spec/ELF/ppc64/PPC-elf64abi.txt, and | |
27 | http://www.linuxbase.org/spec/ELF/ppc64/spec/book1.html */ | |
5bd4f169 | 28 | |
3db64b00 | 29 | #include "sysdep.h" |
183e98be | 30 | #include <stdarg.h> |
5bd4f169 | 31 | #include "bfd.h" |
5bd4f169 AM |
32 | #include "bfdlink.h" |
33 | #include "libbfd.h" | |
34 | #include "elf-bfd.h" | |
04c9666a | 35 | #include "elf/ppc64.h" |
5d1634d7 | 36 | #include "elf64-ppc.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 AM |
56 | static bfd_vma opd_entry_value |
57 | (asection *, bfd_vma, asection **, bfd_vma *); | |
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 |
157090f7 | 82 | #define bfd_elf64_bfd_reloc_name_lookup ppc64_elf_reloc_name_lookup |
ad8e1ba5 AM |
83 | #define bfd_elf64_bfd_merge_private_bfd_data ppc64_elf_merge_private_bfd_data |
84 | #define bfd_elf64_new_section_hook ppc64_elf_new_section_hook | |
85 | #define bfd_elf64_bfd_link_hash_table_create ppc64_elf_link_hash_table_create | |
86 | #define bfd_elf64_bfd_link_hash_table_free ppc64_elf_link_hash_table_free | |
90e3cdf2 | 87 | #define bfd_elf64_get_synthetic_symtab ppc64_elf_get_synthetic_symtab |
ad8e1ba5 AM |
88 | |
89 | #define elf_backend_object_p ppc64_elf_object_p | |
d37c89e5 AM |
90 | #define elf_backend_grok_prstatus ppc64_elf_grok_prstatus |
91 | #define elf_backend_grok_psinfo ppc64_elf_grok_psinfo | |
183e98be | 92 | #define elf_backend_write_core_note ppc64_elf_write_core_note |
ad8e1ba5 AM |
93 | #define elf_backend_create_dynamic_sections ppc64_elf_create_dynamic_sections |
94 | #define elf_backend_copy_indirect_symbol ppc64_elf_copy_indirect_symbol | |
555cd476 | 95 | #define elf_backend_add_symbol_hook ppc64_elf_add_symbol_hook |
7d9616d7 | 96 | #define elf_backend_check_directives ppc64_elf_process_dot_syms |
97fed1c9 | 97 | #define elf_backend_as_needed_cleanup ppc64_elf_as_needed_cleanup |
8387904d | 98 | #define elf_backend_archive_symbol_lookup ppc64_elf_archive_symbol_lookup |
ad8e1ba5 | 99 | #define elf_backend_check_relocs ppc64_elf_check_relocs |
74f0fb50 | 100 | #define elf_backend_gc_keep ppc64_elf_gc_keep |
64d03ab5 | 101 | #define elf_backend_gc_mark_dynamic_ref ppc64_elf_gc_mark_dynamic_ref |
ad8e1ba5 AM |
102 | #define elf_backend_gc_mark_hook ppc64_elf_gc_mark_hook |
103 | #define elf_backend_gc_sweep_hook ppc64_elf_gc_sweep_hook | |
104 | #define elf_backend_adjust_dynamic_symbol ppc64_elf_adjust_dynamic_symbol | |
105 | #define elf_backend_hide_symbol ppc64_elf_hide_symbol | |
106 | #define elf_backend_always_size_sections ppc64_elf_func_desc_adjust | |
107 | #define elf_backend_size_dynamic_sections ppc64_elf_size_dynamic_sections | |
74541ad4 | 108 | #define elf_backend_init_index_section _bfd_elf_init_2_index_sections |
60124e18 | 109 | #define elf_backend_action_discarded ppc64_elf_action_discarded |
ad8e1ba5 AM |
110 | #define elf_backend_relocate_section ppc64_elf_relocate_section |
111 | #define elf_backend_finish_dynamic_symbol ppc64_elf_finish_dynamic_symbol | |
112 | #define elf_backend_reloc_type_class ppc64_elf_reloc_type_class | |
113 | #define elf_backend_finish_dynamic_sections ppc64_elf_finish_dynamic_sections | |
754021d0 | 114 | #define elf_backend_link_output_symbol_hook ppc64_elf_output_symbol_hook |
29ef7005 | 115 | #define elf_backend_special_sections ppc64_elf_special_sections |
e054468f | 116 | #define elf_backend_post_process_headers _bfd_elf_set_osabi |
ad8e1ba5 | 117 | |
5bd4f169 AM |
118 | /* The name of the dynamic interpreter. This is put in the .interp |
119 | section. */ | |
120 | #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1" | |
121 | ||
122 | /* The size in bytes of an entry in the procedure linkage table. */ | |
123 | #define PLT_ENTRY_SIZE 24 | |
124 | ||
125 | /* The initial size of the plt reserved for the dynamic linker. */ | |
5d1634d7 | 126 | #define PLT_INITIAL_ENTRY_SIZE PLT_ENTRY_SIZE |
5bd4f169 AM |
127 | |
128 | /* TOC base pointers offset from start of TOC. */ | |
411e1bfb AM |
129 | #define TOC_BASE_OFF 0x8000 |
130 | ||
131 | /* Offset of tp and dtp pointers from start of TLS block. */ | |
132 | #define TP_OFFSET 0x7000 | |
133 | #define DTP_OFFSET 0x8000 | |
5bd4f169 | 134 | |
ad8e1ba5 AM |
135 | /* .plt call stub instructions. The normal stub is like this, but |
136 | sometimes the .plt entry crosses a 64k boundary and we need to | |
ac2df442 | 137 | insert an addi to adjust r12. */ |
ad8e1ba5 | 138 | #define PLT_CALL_STUB_SIZE (7*4) |
5d1634d7 AM |
139 | #define ADDIS_R12_R2 0x3d820000 /* addis %r12,%r2,xxx@ha */ |
140 | #define STD_R2_40R1 0xf8410028 /* std %r2,40(%r1) */ | |
141 | #define LD_R11_0R12 0xe96c0000 /* ld %r11,xxx+0@l(%r12) */ | |
5d1634d7 | 142 | #define MTCTR_R11 0x7d6903a6 /* mtctr %r11 */ |
ac2df442 | 143 | #define LD_R2_0R12 0xe84c0000 /* ld %r2,xxx+8@l(%r12) */ |
5d1634d7 AM |
144 | /* ld %r11,xxx+16@l(%r12) */ |
145 | #define BCTR 0x4e800420 /* bctr */ | |
146 | ||
5d1634d7 | 147 | |
ee4bf8d2 | 148 | #define ADDIS_R12_R12 0x3d8c0000 /* addis %r12,%r12,off@ha */ |
ac2df442 | 149 | #define ADDI_R12_R12 0x398c0000 /* addi %r12,%r12,off@l */ |
ad8e1ba5 AM |
150 | #define ADDIS_R2_R2 0x3c420000 /* addis %r2,%r2,off@ha */ |
151 | #define ADDI_R2_R2 0x38420000 /* addi %r2,%r2,off@l */ | |
152 | ||
ac2df442 AM |
153 | #define LD_R11_0R2 0xe9620000 /* ld %r11,xxx+0(%r2) */ |
154 | #define LD_R2_0R2 0xe8420000 /* ld %r2,xxx+0(%r2) */ | |
155 | ||
ad8e1ba5 AM |
156 | #define LD_R2_40R1 0xe8410028 /* ld %r2,40(%r1) */ |
157 | ||
ee4bf8d2 | 158 | /* glink call stub instructions. We enter with the index in R0. */ |
ad8e1ba5 | 159 | #define GLINK_CALL_STUB_SIZE (16*4) |
ee4bf8d2 AM |
160 | /* 0: */ |
161 | /* .quad plt0-1f */ | |
162 | /* __glink: */ | |
163 | #define MFLR_R12 0x7d8802a6 /* mflr %12 */ | |
164 | #define BCL_20_31 0x429f0005 /* bcl 20,31,1f */ | |
165 | /* 1: */ | |
166 | #define MFLR_R11 0x7d6802a6 /* mflr %11 */ | |
167 | #define LD_R2_M16R11 0xe84bfff0 /* ld %2,(0b-1b)(%11) */ | |
168 | #define MTLR_R12 0x7d8803a6 /* mtlr %12 */ | |
169 | #define ADD_R12_R2_R11 0x7d825a14 /* add %12,%2,%11 */ | |
170 | /* ld %11,0(%12) */ | |
171 | /* ld %2,8(%12) */ | |
172 | /* mtctr %11 */ | |
173 | /* ld %11,16(%12) */ | |
174 | /* bctr */ | |
5d1634d7 AM |
175 | |
176 | /* Pad with this. */ | |
177 | #define NOP 0x60000000 | |
178 | ||
721956f4 AM |
179 | /* Some other nops. */ |
180 | #define CROR_151515 0x4def7b82 | |
181 | #define CROR_313131 0x4ffffb82 | |
182 | ||
cedb70c5 | 183 | /* .glink entries for the first 32k functions are two instructions. */ |
5d1634d7 AM |
184 | #define LI_R0_0 0x38000000 /* li %r0,0 */ |
185 | #define B_DOT 0x48000000 /* b . */ | |
186 | ||
187 | /* After that, we need two instructions to load the index, followed by | |
188 | a branch. */ | |
189 | #define LIS_R0_0 0x3c000000 /* lis %r0,0 */ | |
10ed1bba | 190 | #define ORI_R0_R0_0 0x60000000 /* ori %r0,%r0,0 */ |
41bd81ab | 191 | |
deb0e272 AM |
192 | /* Instructions used by the save and restore reg functions. */ |
193 | #define STD_R0_0R1 0xf8010000 /* std %r0,0(%r1) */ | |
194 | #define STD_R0_0R12 0xf80c0000 /* std %r0,0(%r12) */ | |
195 | #define LD_R0_0R1 0xe8010000 /* ld %r0,0(%r1) */ | |
196 | #define LD_R0_0R12 0xe80c0000 /* ld %r0,0(%r12) */ | |
82bd7b59 AM |
197 | #define STFD_FR0_0R1 0xd8010000 /* stfd %fr0,0(%r1) */ |
198 | #define LFD_FR0_0R1 0xc8010000 /* lfd %fr0,0(%r1) */ | |
deb0e272 AM |
199 | #define LI_R12_0 0x39800000 /* li %r12,0 */ |
200 | #define STVX_VR0_R12_R0 0x7c0c01ce /* stvx %v0,%r12,%r0 */ | |
201 | #define LVX_VR0_R12_R0 0x7c0c00ce /* lvx %v0,%r12,%r0 */ | |
202 | #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */ | |
82bd7b59 AM |
203 | #define BLR 0x4e800020 /* blr */ |
204 | ||
41bd81ab AM |
205 | /* Since .opd is an array of descriptors and each entry will end up |
206 | with identical R_PPC64_RELATIVE relocs, there is really no need to | |
207 | propagate .opd relocs; The dynamic linker should be taught to | |
1e2f5b6e | 208 | relocate .opd without reloc entries. */ |
41bd81ab AM |
209 | #ifndef NO_OPD_RELOCS |
210 | #define NO_OPD_RELOCS 0 | |
211 | #endif | |
5bd4f169 | 212 | \f |
f5e87a1d | 213 | #define ONES(n) (((bfd_vma) 1 << ((n) - 1) << 1) - 1) |
b34976b6 | 214 | |
5bd4f169 | 215 | /* Relocation HOWTO's. */ |
04c9666a | 216 | static reloc_howto_type *ppc64_elf_howto_table[(int) R_PPC64_max]; |
5bd4f169 AM |
217 | |
218 | static reloc_howto_type ppc64_elf_howto_raw[] = { | |
219 | /* This reloc does nothing. */ | |
220 | HOWTO (R_PPC64_NONE, /* type */ | |
221 | 0, /* rightshift */ | |
411e1bfb AM |
222 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
223 | 32, /* bitsize */ | |
b34976b6 | 224 | FALSE, /* pc_relative */ |
5bd4f169 | 225 | 0, /* bitpos */ |
f5e87a1d | 226 | complain_overflow_dont, /* complain_on_overflow */ |
5bd4f169 AM |
227 | bfd_elf_generic_reloc, /* special_function */ |
228 | "R_PPC64_NONE", /* name */ | |
b34976b6 | 229 | FALSE, /* partial_inplace */ |
d006db6c | 230 | 0, /* src_mask */ |
5bd4f169 | 231 | 0, /* dst_mask */ |
b34976b6 | 232 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
233 | |
234 | /* A standard 32 bit relocation. */ | |
235 | HOWTO (R_PPC64_ADDR32, /* type */ | |
236 | 0, /* rightshift */ | |
237 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
238 | 32, /* bitsize */ | |
b34976b6 | 239 | FALSE, /* pc_relative */ |
5bd4f169 AM |
240 | 0, /* bitpos */ |
241 | complain_overflow_bitfield, /* complain_on_overflow */ | |
242 | bfd_elf_generic_reloc, /* special_function */ | |
243 | "R_PPC64_ADDR32", /* name */ | |
b34976b6 | 244 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
245 | 0, /* src_mask */ |
246 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 247 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
248 | |
249 | /* An absolute 26 bit branch; the lower two bits must be zero. | |
250 | FIXME: we don't check that, we just clear them. */ | |
251 | HOWTO (R_PPC64_ADDR24, /* type */ | |
252 | 0, /* rightshift */ | |
253 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
254 | 26, /* bitsize */ | |
b34976b6 | 255 | FALSE, /* pc_relative */ |
5bd4f169 AM |
256 | 0, /* bitpos */ |
257 | complain_overflow_bitfield, /* complain_on_overflow */ | |
258 | bfd_elf_generic_reloc, /* special_function */ | |
259 | "R_PPC64_ADDR24", /* name */ | |
b34976b6 | 260 | FALSE, /* partial_inplace */ |
d006db6c | 261 | 0, /* src_mask */ |
f5e87a1d | 262 | 0x03fffffc, /* dst_mask */ |
b34976b6 | 263 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
264 | |
265 | /* A standard 16 bit relocation. */ | |
266 | HOWTO (R_PPC64_ADDR16, /* type */ | |
267 | 0, /* rightshift */ | |
268 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
269 | 16, /* bitsize */ | |
b34976b6 | 270 | FALSE, /* pc_relative */ |
5bd4f169 AM |
271 | 0, /* bitpos */ |
272 | complain_overflow_bitfield, /* complain_on_overflow */ | |
273 | bfd_elf_generic_reloc, /* special_function */ | |
274 | "R_PPC64_ADDR16", /* name */ | |
b34976b6 | 275 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
276 | 0, /* src_mask */ |
277 | 0xffff, /* dst_mask */ | |
b34976b6 | 278 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
279 | |
280 | /* A 16 bit relocation without overflow. */ | |
281 | HOWTO (R_PPC64_ADDR16_LO, /* type */ | |
282 | 0, /* rightshift */ | |
283 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
284 | 16, /* bitsize */ | |
b34976b6 | 285 | FALSE, /* pc_relative */ |
5bd4f169 AM |
286 | 0, /* bitpos */ |
287 | complain_overflow_dont,/* complain_on_overflow */ | |
288 | bfd_elf_generic_reloc, /* special_function */ | |
289 | "R_PPC64_ADDR16_LO", /* name */ | |
b34976b6 | 290 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
291 | 0, /* src_mask */ |
292 | 0xffff, /* dst_mask */ | |
b34976b6 | 293 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
294 | |
295 | /* Bits 16-31 of an address. */ | |
296 | HOWTO (R_PPC64_ADDR16_HI, /* type */ | |
297 | 16, /* rightshift */ | |
298 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
299 | 16, /* bitsize */ | |
b34976b6 | 300 | FALSE, /* pc_relative */ |
5bd4f169 AM |
301 | 0, /* bitpos */ |
302 | complain_overflow_dont, /* complain_on_overflow */ | |
303 | bfd_elf_generic_reloc, /* special_function */ | |
304 | "R_PPC64_ADDR16_HI", /* name */ | |
b34976b6 | 305 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
306 | 0, /* src_mask */ |
307 | 0xffff, /* dst_mask */ | |
b34976b6 | 308 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
309 | |
310 | /* Bits 16-31 of an address, plus 1 if the contents of the low 16 | |
311 | bits, treated as a signed number, is negative. */ | |
312 | HOWTO (R_PPC64_ADDR16_HA, /* type */ | |
313 | 16, /* rightshift */ | |
314 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
315 | 16, /* bitsize */ | |
b34976b6 | 316 | FALSE, /* pc_relative */ |
5bd4f169 AM |
317 | 0, /* bitpos */ |
318 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 319 | ppc64_elf_ha_reloc, /* special_function */ |
5bd4f169 | 320 | "R_PPC64_ADDR16_HA", /* name */ |
b34976b6 | 321 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
322 | 0, /* src_mask */ |
323 | 0xffff, /* dst_mask */ | |
b34976b6 | 324 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
325 | |
326 | /* An absolute 16 bit branch; the lower two bits must be zero. | |
327 | FIXME: we don't check that, we just clear them. */ | |
328 | HOWTO (R_PPC64_ADDR14, /* type */ | |
329 | 0, /* rightshift */ | |
330 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
331 | 16, /* bitsize */ | |
b34976b6 | 332 | FALSE, /* pc_relative */ |
5bd4f169 AM |
333 | 0, /* bitpos */ |
334 | complain_overflow_bitfield, /* complain_on_overflow */ | |
2441e016 | 335 | ppc64_elf_branch_reloc, /* special_function */ |
5bd4f169 | 336 | "R_PPC64_ADDR14", /* name */ |
b34976b6 | 337 | FALSE, /* partial_inplace */ |
d006db6c | 338 | 0, /* src_mask */ |
f5e87a1d | 339 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 340 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
341 | |
342 | /* An absolute 16 bit branch, for which bit 10 should be set to | |
343 | indicate that the branch is expected to be taken. The lower two | |
344 | bits must be zero. */ | |
345 | HOWTO (R_PPC64_ADDR14_BRTAKEN, /* type */ | |
346 | 0, /* rightshift */ | |
347 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
348 | 16, /* bitsize */ | |
b34976b6 | 349 | FALSE, /* pc_relative */ |
5bd4f169 AM |
350 | 0, /* bitpos */ |
351 | complain_overflow_bitfield, /* complain_on_overflow */ | |
805fc799 | 352 | ppc64_elf_brtaken_reloc, /* special_function */ |
5bd4f169 | 353 | "R_PPC64_ADDR14_BRTAKEN",/* name */ |
b34976b6 | 354 | FALSE, /* partial_inplace */ |
d006db6c | 355 | 0, /* src_mask */ |
f5e87a1d | 356 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 357 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
358 | |
359 | /* An absolute 16 bit branch, for which bit 10 should be set to | |
360 | indicate that the branch is not expected to be taken. The lower | |
361 | two bits must be zero. */ | |
362 | HOWTO (R_PPC64_ADDR14_BRNTAKEN, /* type */ | |
363 | 0, /* rightshift */ | |
364 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
365 | 16, /* bitsize */ | |
b34976b6 | 366 | FALSE, /* pc_relative */ |
5bd4f169 AM |
367 | 0, /* bitpos */ |
368 | complain_overflow_bitfield, /* complain_on_overflow */ | |
805fc799 | 369 | ppc64_elf_brtaken_reloc, /* special_function */ |
5bd4f169 | 370 | "R_PPC64_ADDR14_BRNTAKEN",/* name */ |
b34976b6 | 371 | FALSE, /* partial_inplace */ |
d006db6c | 372 | 0, /* src_mask */ |
f5e87a1d | 373 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 374 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
375 | |
376 | /* A relative 26 bit branch; the lower two bits must be zero. */ | |
377 | HOWTO (R_PPC64_REL24, /* type */ | |
378 | 0, /* rightshift */ | |
379 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
380 | 26, /* bitsize */ | |
b34976b6 | 381 | TRUE, /* pc_relative */ |
5bd4f169 AM |
382 | 0, /* bitpos */ |
383 | complain_overflow_signed, /* complain_on_overflow */ | |
2441e016 | 384 | ppc64_elf_branch_reloc, /* special_function */ |
5bd4f169 | 385 | "R_PPC64_REL24", /* name */ |
b34976b6 | 386 | FALSE, /* partial_inplace */ |
d006db6c | 387 | 0, /* src_mask */ |
f5e87a1d | 388 | 0x03fffffc, /* dst_mask */ |
b34976b6 | 389 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
390 | |
391 | /* A relative 16 bit branch; the lower two bits must be zero. */ | |
392 | HOWTO (R_PPC64_REL14, /* type */ | |
393 | 0, /* rightshift */ | |
394 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
395 | 16, /* bitsize */ | |
b34976b6 | 396 | TRUE, /* pc_relative */ |
5bd4f169 AM |
397 | 0, /* bitpos */ |
398 | complain_overflow_signed, /* complain_on_overflow */ | |
2441e016 | 399 | ppc64_elf_branch_reloc, /* special_function */ |
5bd4f169 | 400 | "R_PPC64_REL14", /* name */ |
b34976b6 | 401 | FALSE, /* partial_inplace */ |
d006db6c | 402 | 0, /* src_mask */ |
f5e87a1d | 403 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 404 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
405 | |
406 | /* A relative 16 bit branch. Bit 10 should be set to indicate that | |
407 | the branch is expected to be taken. The lower two bits must be | |
408 | zero. */ | |
409 | HOWTO (R_PPC64_REL14_BRTAKEN, /* type */ | |
410 | 0, /* rightshift */ | |
411 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
412 | 16, /* bitsize */ | |
b34976b6 | 413 | TRUE, /* pc_relative */ |
5bd4f169 AM |
414 | 0, /* bitpos */ |
415 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 416 | ppc64_elf_brtaken_reloc, /* special_function */ |
5bd4f169 | 417 | "R_PPC64_REL14_BRTAKEN", /* name */ |
b34976b6 | 418 | FALSE, /* partial_inplace */ |
d006db6c | 419 | 0, /* src_mask */ |
f5e87a1d | 420 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 421 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
422 | |
423 | /* A relative 16 bit branch. Bit 10 should be set to indicate that | |
424 | the branch is not expected to be taken. The lower two bits must | |
425 | be zero. */ | |
426 | HOWTO (R_PPC64_REL14_BRNTAKEN, /* type */ | |
427 | 0, /* rightshift */ | |
428 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
429 | 16, /* bitsize */ | |
b34976b6 | 430 | TRUE, /* pc_relative */ |
5bd4f169 AM |
431 | 0, /* bitpos */ |
432 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 433 | ppc64_elf_brtaken_reloc, /* special_function */ |
5bd4f169 | 434 | "R_PPC64_REL14_BRNTAKEN",/* name */ |
b34976b6 | 435 | FALSE, /* partial_inplace */ |
d006db6c | 436 | 0, /* src_mask */ |
f5e87a1d | 437 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 438 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
439 | |
440 | /* Like R_PPC64_ADDR16, but referring to the GOT table entry for the | |
441 | symbol. */ | |
442 | HOWTO (R_PPC64_GOT16, /* type */ | |
443 | 0, /* rightshift */ | |
444 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
445 | 16, /* bitsize */ | |
b34976b6 | 446 | FALSE, /* pc_relative */ |
5bd4f169 AM |
447 | 0, /* bitpos */ |
448 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 449 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 450 | "R_PPC64_GOT16", /* name */ |
b34976b6 | 451 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
452 | 0, /* src_mask */ |
453 | 0xffff, /* dst_mask */ | |
b34976b6 | 454 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
455 | |
456 | /* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for | |
457 | the symbol. */ | |
458 | HOWTO (R_PPC64_GOT16_LO, /* type */ | |
459 | 0, /* rightshift */ | |
460 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
461 | 16, /* bitsize */ | |
b34976b6 | 462 | FALSE, /* pc_relative */ |
5bd4f169 AM |
463 | 0, /* bitpos */ |
464 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 465 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 466 | "R_PPC64_GOT16_LO", /* name */ |
b34976b6 | 467 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
468 | 0, /* src_mask */ |
469 | 0xffff, /* dst_mask */ | |
b34976b6 | 470 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
471 | |
472 | /* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for | |
473 | the symbol. */ | |
474 | HOWTO (R_PPC64_GOT16_HI, /* type */ | |
475 | 16, /* rightshift */ | |
476 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
477 | 16, /* bitsize */ | |
b34976b6 | 478 | FALSE, /* pc_relative */ |
5bd4f169 AM |
479 | 0, /* bitpos */ |
480 | complain_overflow_dont,/* complain_on_overflow */ | |
805fc799 | 481 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 482 | "R_PPC64_GOT16_HI", /* name */ |
b34976b6 | 483 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
484 | 0, /* src_mask */ |
485 | 0xffff, /* dst_mask */ | |
b34976b6 | 486 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
487 | |
488 | /* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for | |
489 | the symbol. */ | |
490 | HOWTO (R_PPC64_GOT16_HA, /* type */ | |
491 | 16, /* rightshift */ | |
492 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
493 | 16, /* bitsize */ | |
b34976b6 | 494 | FALSE, /* pc_relative */ |
5bd4f169 AM |
495 | 0, /* bitpos */ |
496 | complain_overflow_dont,/* complain_on_overflow */ | |
805fc799 | 497 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 498 | "R_PPC64_GOT16_HA", /* name */ |
b34976b6 | 499 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
500 | 0, /* src_mask */ |
501 | 0xffff, /* dst_mask */ | |
b34976b6 | 502 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
503 | |
504 | /* This is used only by the dynamic linker. The symbol should exist | |
505 | both in the object being run and in some shared library. The | |
506 | dynamic linker copies the data addressed by the symbol from the | |
507 | shared library into the object, because the object being | |
508 | run has to have the data at some particular address. */ | |
509 | HOWTO (R_PPC64_COPY, /* type */ | |
510 | 0, /* rightshift */ | |
f5e87a1d AM |
511 | 0, /* this one is variable size */ |
512 | 0, /* bitsize */ | |
b34976b6 | 513 | FALSE, /* pc_relative */ |
5bd4f169 | 514 | 0, /* bitpos */ |
f5e87a1d AM |
515 | complain_overflow_dont, /* complain_on_overflow */ |
516 | ppc64_elf_unhandled_reloc, /* special_function */ | |
5bd4f169 | 517 | "R_PPC64_COPY", /* name */ |
b34976b6 | 518 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
519 | 0, /* src_mask */ |
520 | 0, /* dst_mask */ | |
b34976b6 | 521 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
522 | |
523 | /* Like R_PPC64_ADDR64, but used when setting global offset table | |
524 | entries. */ | |
525 | HOWTO (R_PPC64_GLOB_DAT, /* type */ | |
526 | 0, /* rightshift */ | |
527 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
528 | 64, /* bitsize */ | |
b34976b6 | 529 | FALSE, /* pc_relative */ |
5bd4f169 AM |
530 | 0, /* bitpos */ |
531 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 532 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 533 | "R_PPC64_GLOB_DAT", /* name */ |
b34976b6 | 534 | FALSE, /* partial_inplace */ |
5bd4f169 | 535 | 0, /* src_mask */ |
f5e87a1d | 536 | ONES (64), /* dst_mask */ |
b34976b6 | 537 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
538 | |
539 | /* Created by the link editor. Marks a procedure linkage table | |
540 | entry for a symbol. */ | |
541 | HOWTO (R_PPC64_JMP_SLOT, /* type */ | |
542 | 0, /* rightshift */ | |
543 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
544 | 0, /* bitsize */ | |
b34976b6 | 545 | FALSE, /* pc_relative */ |
5bd4f169 AM |
546 | 0, /* bitpos */ |
547 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 548 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 549 | "R_PPC64_JMP_SLOT", /* name */ |
b34976b6 | 550 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
551 | 0, /* src_mask */ |
552 | 0, /* dst_mask */ | |
b34976b6 | 553 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
554 | |
555 | /* Used only by the dynamic linker. When the object is run, this | |
556 | doubleword64 is set to the load address of the object, plus the | |
557 | addend. */ | |
558 | HOWTO (R_PPC64_RELATIVE, /* type */ | |
559 | 0, /* rightshift */ | |
560 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
561 | 64, /* bitsize */ | |
b34976b6 | 562 | FALSE, /* pc_relative */ |
5bd4f169 AM |
563 | 0, /* bitpos */ |
564 | complain_overflow_dont, /* complain_on_overflow */ | |
565 | bfd_elf_generic_reloc, /* special_function */ | |
566 | "R_PPC64_RELATIVE", /* name */ | |
b34976b6 | 567 | FALSE, /* partial_inplace */ |
5bd4f169 | 568 | 0, /* src_mask */ |
f5e87a1d | 569 | ONES (64), /* dst_mask */ |
b34976b6 | 570 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
571 | |
572 | /* Like R_PPC64_ADDR32, but may be unaligned. */ | |
573 | HOWTO (R_PPC64_UADDR32, /* type */ | |
574 | 0, /* rightshift */ | |
575 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
576 | 32, /* bitsize */ | |
b34976b6 | 577 | FALSE, /* pc_relative */ |
5bd4f169 AM |
578 | 0, /* bitpos */ |
579 | complain_overflow_bitfield, /* complain_on_overflow */ | |
580 | bfd_elf_generic_reloc, /* special_function */ | |
581 | "R_PPC64_UADDR32", /* name */ | |
b34976b6 | 582 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
583 | 0, /* src_mask */ |
584 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 585 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
586 | |
587 | /* Like R_PPC64_ADDR16, but may be unaligned. */ | |
588 | HOWTO (R_PPC64_UADDR16, /* type */ | |
589 | 0, /* rightshift */ | |
590 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
591 | 16, /* bitsize */ | |
b34976b6 | 592 | FALSE, /* pc_relative */ |
5bd4f169 AM |
593 | 0, /* bitpos */ |
594 | complain_overflow_bitfield, /* complain_on_overflow */ | |
595 | bfd_elf_generic_reloc, /* special_function */ | |
596 | "R_PPC64_UADDR16", /* name */ | |
b34976b6 | 597 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
598 | 0, /* src_mask */ |
599 | 0xffff, /* dst_mask */ | |
b34976b6 | 600 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
601 | |
602 | /* 32-bit PC relative. */ | |
603 | HOWTO (R_PPC64_REL32, /* type */ | |
604 | 0, /* rightshift */ | |
605 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
606 | 32, /* bitsize */ | |
b34976b6 | 607 | TRUE, /* pc_relative */ |
5bd4f169 | 608 | 0, /* bitpos */ |
cedb70c5 | 609 | /* FIXME: Verify. Was complain_overflow_bitfield. */ |
5bd4f169 AM |
610 | complain_overflow_signed, /* complain_on_overflow */ |
611 | bfd_elf_generic_reloc, /* special_function */ | |
612 | "R_PPC64_REL32", /* name */ | |
b34976b6 | 613 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
614 | 0, /* src_mask */ |
615 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 616 | TRUE), /* pcrel_offset */ |
5bd4f169 | 617 | |
10ed1bba | 618 | /* 32-bit relocation to the symbol's procedure linkage table. */ |
5bd4f169 AM |
619 | HOWTO (R_PPC64_PLT32, /* type */ |
620 | 0, /* rightshift */ | |
621 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
622 | 32, /* bitsize */ | |
b34976b6 | 623 | FALSE, /* pc_relative */ |
5bd4f169 AM |
624 | 0, /* bitpos */ |
625 | complain_overflow_bitfield, /* complain_on_overflow */ | |
805fc799 | 626 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 627 | "R_PPC64_PLT32", /* name */ |
b34976b6 | 628 | FALSE, /* partial_inplace */ |
5bd4f169 | 629 | 0, /* src_mask */ |
f5e87a1d | 630 | 0xffffffff, /* dst_mask */ |
b34976b6 | 631 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
632 | |
633 | /* 32-bit PC relative relocation to the symbol's procedure linkage table. | |
634 | FIXME: R_PPC64_PLTREL32 not supported. */ | |
635 | HOWTO (R_PPC64_PLTREL32, /* type */ | |
636 | 0, /* rightshift */ | |
637 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
638 | 32, /* bitsize */ | |
b34976b6 | 639 | TRUE, /* pc_relative */ |
5bd4f169 AM |
640 | 0, /* bitpos */ |
641 | complain_overflow_signed, /* complain_on_overflow */ | |
642 | bfd_elf_generic_reloc, /* special_function */ | |
643 | "R_PPC64_PLTREL32", /* name */ | |
b34976b6 | 644 | FALSE, /* partial_inplace */ |
5bd4f169 | 645 | 0, /* src_mask */ |
f5e87a1d | 646 | 0xffffffff, /* dst_mask */ |
b34976b6 | 647 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
648 | |
649 | /* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for | |
650 | the symbol. */ | |
651 | HOWTO (R_PPC64_PLT16_LO, /* type */ | |
652 | 0, /* rightshift */ | |
653 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
654 | 16, /* bitsize */ | |
b34976b6 | 655 | FALSE, /* pc_relative */ |
5bd4f169 AM |
656 | 0, /* bitpos */ |
657 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 658 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 659 | "R_PPC64_PLT16_LO", /* name */ |
b34976b6 | 660 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
661 | 0, /* src_mask */ |
662 | 0xffff, /* dst_mask */ | |
b34976b6 | 663 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
664 | |
665 | /* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for | |
666 | the symbol. */ | |
667 | HOWTO (R_PPC64_PLT16_HI, /* type */ | |
668 | 16, /* rightshift */ | |
669 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
670 | 16, /* bitsize */ | |
b34976b6 | 671 | FALSE, /* pc_relative */ |
5bd4f169 AM |
672 | 0, /* bitpos */ |
673 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 674 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 675 | "R_PPC64_PLT16_HI", /* name */ |
b34976b6 | 676 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
677 | 0, /* src_mask */ |
678 | 0xffff, /* dst_mask */ | |
b34976b6 | 679 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
680 | |
681 | /* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for | |
682 | the symbol. */ | |
683 | HOWTO (R_PPC64_PLT16_HA, /* type */ | |
684 | 16, /* rightshift */ | |
685 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
686 | 16, /* bitsize */ | |
b34976b6 | 687 | FALSE, /* pc_relative */ |
5bd4f169 AM |
688 | 0, /* bitpos */ |
689 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 690 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 691 | "R_PPC64_PLT16_HA", /* name */ |
b34976b6 | 692 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
693 | 0, /* src_mask */ |
694 | 0xffff, /* dst_mask */ | |
b34976b6 | 695 | FALSE), /* pcrel_offset */ |
5bd4f169 | 696 | |
c061c2d8 | 697 | /* 16-bit section relative relocation. */ |
5bd4f169 AM |
698 | HOWTO (R_PPC64_SECTOFF, /* type */ |
699 | 0, /* rightshift */ | |
c061c2d8 AM |
700 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
701 | 16, /* bitsize */ | |
b34976b6 | 702 | FALSE, /* pc_relative */ |
5bd4f169 AM |
703 | 0, /* bitpos */ |
704 | complain_overflow_bitfield, /* complain_on_overflow */ | |
805fc799 | 705 | ppc64_elf_sectoff_reloc, /* special_function */ |
5bd4f169 | 706 | "R_PPC64_SECTOFF", /* name */ |
b34976b6 | 707 | FALSE, /* partial_inplace */ |
5bd4f169 | 708 | 0, /* src_mask */ |
c061c2d8 | 709 | 0xffff, /* dst_mask */ |
b34976b6 | 710 | FALSE), /* pcrel_offset */ |
5bd4f169 | 711 | |
c061c2d8 | 712 | /* Like R_PPC64_SECTOFF, but no overflow warning. */ |
5bd4f169 AM |
713 | HOWTO (R_PPC64_SECTOFF_LO, /* type */ |
714 | 0, /* rightshift */ | |
715 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
716 | 16, /* bitsize */ | |
b34976b6 | 717 | FALSE, /* pc_relative */ |
5bd4f169 AM |
718 | 0, /* bitpos */ |
719 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 720 | ppc64_elf_sectoff_reloc, /* special_function */ |
5bd4f169 | 721 | "R_PPC64_SECTOFF_LO", /* name */ |
b34976b6 | 722 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
723 | 0, /* src_mask */ |
724 | 0xffff, /* dst_mask */ | |
b34976b6 | 725 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
726 | |
727 | /* 16-bit upper half section relative relocation. */ | |
728 | HOWTO (R_PPC64_SECTOFF_HI, /* type */ | |
729 | 16, /* rightshift */ | |
730 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
731 | 16, /* bitsize */ | |
b34976b6 | 732 | FALSE, /* pc_relative */ |
5bd4f169 AM |
733 | 0, /* bitpos */ |
734 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 735 | ppc64_elf_sectoff_reloc, /* special_function */ |
5bd4f169 | 736 | "R_PPC64_SECTOFF_HI", /* name */ |
b34976b6 | 737 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
738 | 0, /* src_mask */ |
739 | 0xffff, /* dst_mask */ | |
b34976b6 | 740 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
741 | |
742 | /* 16-bit upper half adjusted section relative relocation. */ | |
743 | HOWTO (R_PPC64_SECTOFF_HA, /* type */ | |
744 | 16, /* rightshift */ | |
745 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
746 | 16, /* bitsize */ | |
b34976b6 | 747 | FALSE, /* pc_relative */ |
5bd4f169 AM |
748 | 0, /* bitpos */ |
749 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 750 | ppc64_elf_sectoff_ha_reloc, /* special_function */ |
5bd4f169 | 751 | "R_PPC64_SECTOFF_HA", /* name */ |
b34976b6 | 752 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
753 | 0, /* src_mask */ |
754 | 0xffff, /* dst_mask */ | |
b34976b6 | 755 | FALSE), /* pcrel_offset */ |
5bd4f169 | 756 | |
04c9666a AM |
757 | /* Like R_PPC64_REL24 without touching the two least significant bits. */ |
758 | HOWTO (R_PPC64_REL30, /* type */ | |
5bd4f169 AM |
759 | 2, /* rightshift */ |
760 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
761 | 30, /* bitsize */ | |
b34976b6 | 762 | TRUE, /* pc_relative */ |
5bd4f169 AM |
763 | 0, /* bitpos */ |
764 | complain_overflow_dont, /* complain_on_overflow */ | |
765 | bfd_elf_generic_reloc, /* special_function */ | |
04c9666a | 766 | "R_PPC64_REL30", /* name */ |
b34976b6 | 767 | FALSE, /* partial_inplace */ |
d006db6c | 768 | 0, /* src_mask */ |
5bd4f169 | 769 | 0xfffffffc, /* dst_mask */ |
b34976b6 | 770 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
771 | |
772 | /* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */ | |
773 | ||
774 | /* A standard 64-bit relocation. */ | |
775 | HOWTO (R_PPC64_ADDR64, /* type */ | |
776 | 0, /* rightshift */ | |
777 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
778 | 64, /* bitsize */ | |
b34976b6 | 779 | FALSE, /* pc_relative */ |
5bd4f169 AM |
780 | 0, /* bitpos */ |
781 | complain_overflow_dont, /* complain_on_overflow */ | |
782 | bfd_elf_generic_reloc, /* special_function */ | |
783 | "R_PPC64_ADDR64", /* name */ | |
b34976b6 | 784 | FALSE, /* partial_inplace */ |
5bd4f169 | 785 | 0, /* src_mask */ |
f5e87a1d | 786 | ONES (64), /* dst_mask */ |
b34976b6 | 787 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
788 | |
789 | /* The bits 32-47 of an address. */ | |
790 | HOWTO (R_PPC64_ADDR16_HIGHER, /* type */ | |
791 | 32, /* rightshift */ | |
792 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
793 | 16, /* bitsize */ | |
b34976b6 | 794 | FALSE, /* pc_relative */ |
5bd4f169 AM |
795 | 0, /* bitpos */ |
796 | complain_overflow_dont, /* complain_on_overflow */ | |
797 | bfd_elf_generic_reloc, /* special_function */ | |
798 | "R_PPC64_ADDR16_HIGHER", /* name */ | |
b34976b6 | 799 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
800 | 0, /* src_mask */ |
801 | 0xffff, /* dst_mask */ | |
b34976b6 | 802 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
803 | |
804 | /* The bits 32-47 of an address, plus 1 if the contents of the low | |
805 | 16 bits, treated as a signed number, is negative. */ | |
806 | HOWTO (R_PPC64_ADDR16_HIGHERA, /* type */ | |
807 | 32, /* rightshift */ | |
808 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
809 | 16, /* bitsize */ | |
b34976b6 | 810 | FALSE, /* pc_relative */ |
5bd4f169 AM |
811 | 0, /* bitpos */ |
812 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 813 | ppc64_elf_ha_reloc, /* special_function */ |
5bd4f169 | 814 | "R_PPC64_ADDR16_HIGHERA", /* name */ |
b34976b6 | 815 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
816 | 0, /* src_mask */ |
817 | 0xffff, /* dst_mask */ | |
b34976b6 | 818 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
819 | |
820 | /* The bits 48-63 of an address. */ | |
821 | HOWTO (R_PPC64_ADDR16_HIGHEST,/* type */ | |
822 | 48, /* rightshift */ | |
823 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
824 | 16, /* bitsize */ | |
b34976b6 | 825 | FALSE, /* pc_relative */ |
5bd4f169 AM |
826 | 0, /* bitpos */ |
827 | complain_overflow_dont, /* complain_on_overflow */ | |
828 | bfd_elf_generic_reloc, /* special_function */ | |
829 | "R_PPC64_ADDR16_HIGHEST", /* name */ | |
b34976b6 | 830 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
831 | 0, /* src_mask */ |
832 | 0xffff, /* dst_mask */ | |
b34976b6 | 833 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
834 | |
835 | /* The bits 48-63 of an address, plus 1 if the contents of the low | |
836 | 16 bits, treated as a signed number, is negative. */ | |
837 | HOWTO (R_PPC64_ADDR16_HIGHESTA,/* type */ | |
838 | 48, /* rightshift */ | |
839 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
840 | 16, /* bitsize */ | |
b34976b6 | 841 | FALSE, /* pc_relative */ |
5bd4f169 AM |
842 | 0, /* bitpos */ |
843 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 844 | ppc64_elf_ha_reloc, /* special_function */ |
5bd4f169 | 845 | "R_PPC64_ADDR16_HIGHESTA", /* name */ |
b34976b6 | 846 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
847 | 0, /* src_mask */ |
848 | 0xffff, /* dst_mask */ | |
b34976b6 | 849 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
850 | |
851 | /* Like ADDR64, but may be unaligned. */ | |
852 | HOWTO (R_PPC64_UADDR64, /* type */ | |
853 | 0, /* rightshift */ | |
854 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
855 | 64, /* bitsize */ | |
b34976b6 | 856 | FALSE, /* pc_relative */ |
5bd4f169 AM |
857 | 0, /* bitpos */ |
858 | complain_overflow_dont, /* complain_on_overflow */ | |
859 | bfd_elf_generic_reloc, /* special_function */ | |
860 | "R_PPC64_UADDR64", /* name */ | |
b34976b6 | 861 | FALSE, /* partial_inplace */ |
5bd4f169 | 862 | 0, /* src_mask */ |
f5e87a1d | 863 | ONES (64), /* dst_mask */ |
b34976b6 | 864 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
865 | |
866 | /* 64-bit relative relocation. */ | |
867 | HOWTO (R_PPC64_REL64, /* type */ | |
868 | 0, /* rightshift */ | |
869 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
870 | 64, /* bitsize */ | |
b34976b6 | 871 | TRUE, /* pc_relative */ |
5bd4f169 AM |
872 | 0, /* bitpos */ |
873 | complain_overflow_dont, /* complain_on_overflow */ | |
874 | bfd_elf_generic_reloc, /* special_function */ | |
875 | "R_PPC64_REL64", /* name */ | |
b34976b6 | 876 | FALSE, /* partial_inplace */ |
5bd4f169 | 877 | 0, /* src_mask */ |
f5e87a1d | 878 | ONES (64), /* dst_mask */ |
b34976b6 | 879 | TRUE), /* pcrel_offset */ |
5bd4f169 | 880 | |
cedb70c5 | 881 | /* 64-bit relocation to the symbol's procedure linkage table. */ |
5bd4f169 AM |
882 | HOWTO (R_PPC64_PLT64, /* type */ |
883 | 0, /* rightshift */ | |
884 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
885 | 64, /* bitsize */ | |
b34976b6 | 886 | FALSE, /* pc_relative */ |
5bd4f169 AM |
887 | 0, /* bitpos */ |
888 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 889 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 890 | "R_PPC64_PLT64", /* name */ |
b34976b6 | 891 | FALSE, /* partial_inplace */ |
5bd4f169 | 892 | 0, /* src_mask */ |
f5e87a1d | 893 | ONES (64), /* dst_mask */ |
b34976b6 | 894 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
895 | |
896 | /* 64-bit PC relative relocation to the symbol's procedure linkage | |
897 | table. */ | |
898 | /* FIXME: R_PPC64_PLTREL64 not supported. */ | |
899 | HOWTO (R_PPC64_PLTREL64, /* type */ | |
900 | 0, /* rightshift */ | |
901 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
902 | 64, /* bitsize */ | |
b34976b6 | 903 | TRUE, /* pc_relative */ |
5bd4f169 AM |
904 | 0, /* bitpos */ |
905 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 906 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 907 | "R_PPC64_PLTREL64", /* name */ |
b34976b6 | 908 | FALSE, /* partial_inplace */ |
5bd4f169 | 909 | 0, /* src_mask */ |
f5e87a1d | 910 | ONES (64), /* dst_mask */ |
b34976b6 | 911 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
912 | |
913 | /* 16 bit TOC-relative relocation. */ | |
914 | ||
915 | /* R_PPC64_TOC16 47 half16* S + A - .TOC. */ | |
916 | HOWTO (R_PPC64_TOC16, /* type */ | |
917 | 0, /* rightshift */ | |
918 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
919 | 16, /* bitsize */ | |
b34976b6 | 920 | FALSE, /* pc_relative */ |
5bd4f169 AM |
921 | 0, /* bitpos */ |
922 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 923 | ppc64_elf_toc_reloc, /* special_function */ |
5bd4f169 | 924 | "R_PPC64_TOC16", /* name */ |
b34976b6 | 925 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
926 | 0, /* src_mask */ |
927 | 0xffff, /* dst_mask */ | |
b34976b6 | 928 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
929 | |
930 | /* 16 bit TOC-relative relocation without overflow. */ | |
931 | ||
932 | /* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */ | |
933 | HOWTO (R_PPC64_TOC16_LO, /* type */ | |
934 | 0, /* rightshift */ | |
935 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
936 | 16, /* bitsize */ | |
b34976b6 | 937 | FALSE, /* pc_relative */ |
5bd4f169 AM |
938 | 0, /* bitpos */ |
939 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 940 | ppc64_elf_toc_reloc, /* special_function */ |
5bd4f169 | 941 | "R_PPC64_TOC16_LO", /* name */ |
b34976b6 | 942 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
943 | 0, /* src_mask */ |
944 | 0xffff, /* dst_mask */ | |
b34976b6 | 945 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
946 | |
947 | /* 16 bit TOC-relative relocation, high 16 bits. */ | |
948 | ||
949 | /* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */ | |
950 | HOWTO (R_PPC64_TOC16_HI, /* type */ | |
951 | 16, /* rightshift */ | |
952 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
953 | 16, /* bitsize */ | |
b34976b6 | 954 | FALSE, /* pc_relative */ |
5bd4f169 AM |
955 | 0, /* bitpos */ |
956 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 957 | ppc64_elf_toc_reloc, /* special_function */ |
5bd4f169 | 958 | "R_PPC64_TOC16_HI", /* name */ |
b34976b6 | 959 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
960 | 0, /* src_mask */ |
961 | 0xffff, /* dst_mask */ | |
b34976b6 | 962 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
963 | |
964 | /* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the | |
965 | contents of the low 16 bits, treated as a signed number, is | |
966 | negative. */ | |
967 | ||
968 | /* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */ | |
969 | HOWTO (R_PPC64_TOC16_HA, /* type */ | |
970 | 16, /* rightshift */ | |
971 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
972 | 16, /* bitsize */ | |
b34976b6 | 973 | FALSE, /* pc_relative */ |
5bd4f169 AM |
974 | 0, /* bitpos */ |
975 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 976 | ppc64_elf_toc_ha_reloc, /* special_function */ |
5bd4f169 | 977 | "R_PPC64_TOC16_HA", /* name */ |
b34976b6 | 978 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
979 | 0, /* src_mask */ |
980 | 0xffff, /* dst_mask */ | |
b34976b6 | 981 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
982 | |
983 | /* 64-bit relocation; insert value of TOC base (.TOC.). */ | |
984 | ||
985 | /* R_PPC64_TOC 51 doubleword64 .TOC. */ | |
986 | HOWTO (R_PPC64_TOC, /* type */ | |
987 | 0, /* rightshift */ | |
988 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
989 | 64, /* bitsize */ | |
b34976b6 | 990 | FALSE, /* pc_relative */ |
5bd4f169 AM |
991 | 0, /* bitpos */ |
992 | complain_overflow_bitfield, /* complain_on_overflow */ | |
805fc799 | 993 | ppc64_elf_toc64_reloc, /* special_function */ |
5bd4f169 | 994 | "R_PPC64_TOC", /* name */ |
b34976b6 | 995 | FALSE, /* partial_inplace */ |
5bd4f169 | 996 | 0, /* src_mask */ |
f5e87a1d | 997 | ONES (64), /* dst_mask */ |
b34976b6 | 998 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
999 | |
1000 | /* Like R_PPC64_GOT16, but also informs the link editor that the | |
1001 | value to relocate may (!) refer to a PLT entry which the link | |
1002 | editor (a) may replace with the symbol value. If the link editor | |
1003 | is unable to fully resolve the symbol, it may (b) create a PLT | |
1004 | entry and store the address to the new PLT entry in the GOT. | |
1005 | This permits lazy resolution of function symbols at run time. | |
1006 | The link editor may also skip all of this and just (c) emit a | |
1007 | R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */ | |
1008 | /* FIXME: R_PPC64_PLTGOT16 not implemented. */ | |
1009 | HOWTO (R_PPC64_PLTGOT16, /* type */ | |
1010 | 0, /* rightshift */ | |
1011 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1012 | 16, /* bitsize */ | |
b34976b6 | 1013 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1014 | 0, /* bitpos */ |
1015 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 1016 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb AM |
1017 | "R_PPC64_PLTGOT16", /* name */ |
1018 | FALSE, /* partial_inplace */ | |
1019 | 0, /* src_mask */ | |
1020 | 0xffff, /* dst_mask */ | |
1021 | FALSE), /* pcrel_offset */ | |
1022 | ||
1023 | /* Like R_PPC64_PLTGOT16, but without overflow. */ | |
1024 | /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */ | |
1025 | HOWTO (R_PPC64_PLTGOT16_LO, /* type */ | |
1026 | 0, /* rightshift */ | |
1027 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1028 | 16, /* bitsize */ | |
1029 | FALSE, /* pc_relative */ | |
1030 | 0, /* bitpos */ | |
1031 | complain_overflow_dont, /* complain_on_overflow */ | |
1032 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1033 | "R_PPC64_PLTGOT16_LO", /* name */ | |
1034 | FALSE, /* partial_inplace */ | |
1035 | 0, /* src_mask */ | |
1036 | 0xffff, /* dst_mask */ | |
1037 | FALSE), /* pcrel_offset */ | |
1038 | ||
1039 | /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */ | |
1040 | /* FIXME: R_PPC64_PLTGOT16_HI not implemented. */ | |
1041 | HOWTO (R_PPC64_PLTGOT16_HI, /* type */ | |
1042 | 16, /* rightshift */ | |
1043 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1044 | 16, /* bitsize */ | |
1045 | FALSE, /* pc_relative */ | |
1046 | 0, /* bitpos */ | |
1047 | complain_overflow_dont, /* complain_on_overflow */ | |
1048 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1049 | "R_PPC64_PLTGOT16_HI", /* name */ | |
1050 | FALSE, /* partial_inplace */ | |
1051 | 0, /* src_mask */ | |
1052 | 0xffff, /* dst_mask */ | |
1053 | FALSE), /* pcrel_offset */ | |
1054 | ||
1055 | /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus | |
1056 | 1 if the contents of the low 16 bits, treated as a signed number, | |
1057 | is negative. */ | |
1058 | /* FIXME: R_PPC64_PLTGOT16_HA not implemented. */ | |
1059 | HOWTO (R_PPC64_PLTGOT16_HA, /* type */ | |
1060 | 16, /* rightshift */ | |
1061 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1062 | 16, /* bitsize */ | |
1063 | FALSE, /* pc_relative */ | |
1064 | 0, /* bitpos */ | |
1065 | complain_overflow_dont,/* complain_on_overflow */ | |
1066 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1067 | "R_PPC64_PLTGOT16_HA", /* name */ | |
1068 | FALSE, /* partial_inplace */ | |
1069 | 0, /* src_mask */ | |
1070 | 0xffff, /* dst_mask */ | |
1071 | FALSE), /* pcrel_offset */ | |
1072 | ||
1073 | /* Like R_PPC64_ADDR16, but for instructions with a DS field. */ | |
1074 | HOWTO (R_PPC64_ADDR16_DS, /* type */ | |
1075 | 0, /* rightshift */ | |
1076 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1077 | 16, /* bitsize */ | |
1078 | FALSE, /* pc_relative */ | |
1079 | 0, /* bitpos */ | |
1080 | complain_overflow_bitfield, /* complain_on_overflow */ | |
1081 | bfd_elf_generic_reloc, /* special_function */ | |
1082 | "R_PPC64_ADDR16_DS", /* name */ | |
1083 | FALSE, /* partial_inplace */ | |
1084 | 0, /* src_mask */ | |
1085 | 0xfffc, /* dst_mask */ | |
1086 | FALSE), /* pcrel_offset */ | |
1087 | ||
1088 | /* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */ | |
1089 | HOWTO (R_PPC64_ADDR16_LO_DS, /* type */ | |
1090 | 0, /* rightshift */ | |
1091 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1092 | 16, /* bitsize */ | |
1093 | FALSE, /* pc_relative */ | |
1094 | 0, /* bitpos */ | |
1095 | complain_overflow_dont,/* complain_on_overflow */ | |
1096 | bfd_elf_generic_reloc, /* special_function */ | |
1097 | "R_PPC64_ADDR16_LO_DS",/* name */ | |
1098 | FALSE, /* partial_inplace */ | |
1099 | 0, /* src_mask */ | |
1100 | 0xfffc, /* dst_mask */ | |
1101 | FALSE), /* pcrel_offset */ | |
1102 | ||
1103 | /* Like R_PPC64_GOT16, but for instructions with a DS field. */ | |
1104 | HOWTO (R_PPC64_GOT16_DS, /* type */ | |
1105 | 0, /* rightshift */ | |
1106 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1107 | 16, /* bitsize */ | |
1108 | FALSE, /* pc_relative */ | |
1109 | 0, /* bitpos */ | |
1110 | complain_overflow_signed, /* complain_on_overflow */ | |
1111 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1112 | "R_PPC64_GOT16_DS", /* name */ | |
1113 | FALSE, /* partial_inplace */ | |
1114 | 0, /* src_mask */ | |
1115 | 0xfffc, /* dst_mask */ | |
1116 | FALSE), /* pcrel_offset */ | |
1117 | ||
1118 | /* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */ | |
1119 | HOWTO (R_PPC64_GOT16_LO_DS, /* type */ | |
1120 | 0, /* rightshift */ | |
1121 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1122 | 16, /* bitsize */ | |
1123 | FALSE, /* pc_relative */ | |
1124 | 0, /* bitpos */ | |
1125 | complain_overflow_dont, /* complain_on_overflow */ | |
1126 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1127 | "R_PPC64_GOT16_LO_DS", /* name */ | |
1128 | FALSE, /* partial_inplace */ | |
1129 | 0, /* src_mask */ | |
1130 | 0xfffc, /* dst_mask */ | |
1131 | FALSE), /* pcrel_offset */ | |
1132 | ||
1133 | /* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */ | |
1134 | HOWTO (R_PPC64_PLT16_LO_DS, /* type */ | |
1135 | 0, /* rightshift */ | |
1136 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1137 | 16, /* bitsize */ | |
1138 | FALSE, /* pc_relative */ | |
1139 | 0, /* bitpos */ | |
1140 | complain_overflow_dont, /* complain_on_overflow */ | |
1141 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1142 | "R_PPC64_PLT16_LO_DS", /* name */ | |
1143 | FALSE, /* partial_inplace */ | |
1144 | 0, /* src_mask */ | |
1145 | 0xfffc, /* dst_mask */ | |
1146 | FALSE), /* pcrel_offset */ | |
1147 | ||
1148 | /* Like R_PPC64_SECTOFF, but for instructions with a DS field. */ | |
1149 | HOWTO (R_PPC64_SECTOFF_DS, /* type */ | |
1150 | 0, /* rightshift */ | |
1151 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1152 | 16, /* bitsize */ | |
1153 | FALSE, /* pc_relative */ | |
1154 | 0, /* bitpos */ | |
1155 | complain_overflow_bitfield, /* complain_on_overflow */ | |
1156 | ppc64_elf_sectoff_reloc, /* special_function */ | |
1157 | "R_PPC64_SECTOFF_DS", /* name */ | |
1158 | FALSE, /* partial_inplace */ | |
1159 | 0, /* src_mask */ | |
1160 | 0xfffc, /* dst_mask */ | |
1161 | FALSE), /* pcrel_offset */ | |
1162 | ||
1163 | /* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */ | |
1164 | HOWTO (R_PPC64_SECTOFF_LO_DS, /* type */ | |
1165 | 0, /* rightshift */ | |
1166 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1167 | 16, /* bitsize */ | |
1168 | FALSE, /* pc_relative */ | |
1169 | 0, /* bitpos */ | |
1170 | complain_overflow_dont, /* complain_on_overflow */ | |
1171 | ppc64_elf_sectoff_reloc, /* special_function */ | |
1172 | "R_PPC64_SECTOFF_LO_DS",/* name */ | |
1173 | FALSE, /* partial_inplace */ | |
1174 | 0, /* src_mask */ | |
1175 | 0xfffc, /* dst_mask */ | |
1176 | FALSE), /* pcrel_offset */ | |
1177 | ||
1178 | /* Like R_PPC64_TOC16, but for instructions with a DS field. */ | |
1179 | HOWTO (R_PPC64_TOC16_DS, /* type */ | |
1180 | 0, /* rightshift */ | |
1181 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1182 | 16, /* bitsize */ | |
1183 | FALSE, /* pc_relative */ | |
1184 | 0, /* bitpos */ | |
1185 | complain_overflow_signed, /* complain_on_overflow */ | |
1186 | ppc64_elf_toc_reloc, /* special_function */ | |
1187 | "R_PPC64_TOC16_DS", /* name */ | |
1188 | FALSE, /* partial_inplace */ | |
1189 | 0, /* src_mask */ | |
1190 | 0xfffc, /* dst_mask */ | |
1191 | FALSE), /* pcrel_offset */ | |
1192 | ||
1193 | /* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */ | |
1194 | HOWTO (R_PPC64_TOC16_LO_DS, /* type */ | |
1195 | 0, /* rightshift */ | |
1196 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1197 | 16, /* bitsize */ | |
1198 | FALSE, /* pc_relative */ | |
1199 | 0, /* bitpos */ | |
1200 | complain_overflow_dont, /* complain_on_overflow */ | |
1201 | ppc64_elf_toc_reloc, /* special_function */ | |
1202 | "R_PPC64_TOC16_LO_DS", /* name */ | |
1203 | FALSE, /* partial_inplace */ | |
1204 | 0, /* src_mask */ | |
1205 | 0xfffc, /* dst_mask */ | |
1206 | FALSE), /* pcrel_offset */ | |
1207 | ||
1208 | /* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */ | |
1209 | /* FIXME: R_PPC64_PLTGOT16_DS not implemented. */ | |
6bfdb61b | 1210 | HOWTO (R_PPC64_PLTGOT16_DS, /* type */ |
411e1bfb AM |
1211 | 0, /* rightshift */ |
1212 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1213 | 16, /* bitsize */ | |
1214 | FALSE, /* pc_relative */ | |
1215 | 0, /* bitpos */ | |
1216 | complain_overflow_signed, /* complain_on_overflow */ | |
1217 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1218 | "R_PPC64_PLTGOT16_DS", /* name */ | |
1219 | FALSE, /* partial_inplace */ | |
1220 | 0, /* src_mask */ | |
1221 | 0xfffc, /* dst_mask */ | |
1222 | FALSE), /* pcrel_offset */ | |
1223 | ||
1224 | /* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */ | |
1225 | /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */ | |
1226 | HOWTO (R_PPC64_PLTGOT16_LO_DS,/* type */ | |
1227 | 0, /* rightshift */ | |
1228 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1229 | 16, /* bitsize */ | |
1230 | FALSE, /* pc_relative */ | |
1231 | 0, /* bitpos */ | |
1232 | complain_overflow_dont, /* complain_on_overflow */ | |
1233 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1234 | "R_PPC64_PLTGOT16_LO_DS",/* name */ | |
1235 | FALSE, /* partial_inplace */ | |
1236 | 0, /* src_mask */ | |
1237 | 0xfffc, /* dst_mask */ | |
1238 | FALSE), /* pcrel_offset */ | |
1239 | ||
727fc41e | 1240 | /* Marker relocs for TLS. */ |
411e1bfb AM |
1241 | HOWTO (R_PPC64_TLS, |
1242 | 0, /* rightshift */ | |
1243 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1244 | 32, /* bitsize */ | |
1245 | FALSE, /* pc_relative */ | |
1246 | 0, /* bitpos */ | |
1247 | complain_overflow_dont, /* complain_on_overflow */ | |
1248 | bfd_elf_generic_reloc, /* special_function */ | |
1249 | "R_PPC64_TLS", /* name */ | |
1250 | FALSE, /* partial_inplace */ | |
1251 | 0, /* src_mask */ | |
1252 | 0, /* dst_mask */ | |
1253 | FALSE), /* pcrel_offset */ | |
1254 | ||
727fc41e AM |
1255 | HOWTO (R_PPC64_TLSGD, |
1256 | 0, /* rightshift */ | |
1257 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1258 | 32, /* bitsize */ | |
1259 | FALSE, /* pc_relative */ | |
1260 | 0, /* bitpos */ | |
1261 | complain_overflow_dont, /* complain_on_overflow */ | |
1262 | bfd_elf_generic_reloc, /* special_function */ | |
1263 | "R_PPC64_TLSGD", /* name */ | |
1264 | FALSE, /* partial_inplace */ | |
1265 | 0, /* src_mask */ | |
1266 | 0, /* dst_mask */ | |
1267 | FALSE), /* pcrel_offset */ | |
1268 | ||
1269 | HOWTO (R_PPC64_TLSLD, | |
1270 | 0, /* rightshift */ | |
1271 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1272 | 32, /* bitsize */ | |
1273 | FALSE, /* pc_relative */ | |
1274 | 0, /* bitpos */ | |
1275 | complain_overflow_dont, /* complain_on_overflow */ | |
1276 | bfd_elf_generic_reloc, /* special_function */ | |
1277 | "R_PPC64_TLSLD", /* name */ | |
1278 | FALSE, /* partial_inplace */ | |
1279 | 0, /* src_mask */ | |
1280 | 0, /* dst_mask */ | |
1281 | FALSE), /* pcrel_offset */ | |
1282 | ||
411e1bfb AM |
1283 | /* Computes the load module index of the load module that contains the |
1284 | definition of its TLS sym. */ | |
1285 | HOWTO (R_PPC64_DTPMOD64, | |
1286 | 0, /* rightshift */ | |
1287 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
1288 | 64, /* bitsize */ | |
1289 | FALSE, /* pc_relative */ | |
1290 | 0, /* bitpos */ | |
1291 | complain_overflow_dont, /* complain_on_overflow */ | |
1292 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1293 | "R_PPC64_DTPMOD64", /* name */ | |
1294 | FALSE, /* partial_inplace */ | |
1295 | 0, /* src_mask */ | |
1296 | ONES (64), /* dst_mask */ | |
1297 | FALSE), /* pcrel_offset */ | |
1298 | ||
1299 | /* Computes a dtv-relative displacement, the difference between the value | |
1300 | of sym+add and the base address of the thread-local storage block that | |
1301 | contains the definition of sym, minus 0x8000. */ | |
1302 | HOWTO (R_PPC64_DTPREL64, | |
1303 | 0, /* rightshift */ | |
1304 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
1305 | 64, /* bitsize */ | |
1306 | FALSE, /* pc_relative */ | |
1307 | 0, /* bitpos */ | |
1308 | complain_overflow_dont, /* complain_on_overflow */ | |
1309 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1310 | "R_PPC64_DTPREL64", /* name */ | |
1311 | FALSE, /* partial_inplace */ | |
1312 | 0, /* src_mask */ | |
1313 | ONES (64), /* dst_mask */ | |
1314 | FALSE), /* pcrel_offset */ | |
1315 | ||
1316 | /* A 16 bit dtprel reloc. */ | |
1317 | HOWTO (R_PPC64_DTPREL16, | |
1318 | 0, /* rightshift */ | |
1319 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1320 | 16, /* bitsize */ | |
1321 | FALSE, /* pc_relative */ | |
1322 | 0, /* bitpos */ | |
1323 | complain_overflow_signed, /* complain_on_overflow */ | |
1324 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1325 | "R_PPC64_DTPREL16", /* name */ | |
1326 | FALSE, /* partial_inplace */ | |
1327 | 0, /* src_mask */ | |
1328 | 0xffff, /* dst_mask */ | |
1329 | FALSE), /* pcrel_offset */ | |
1330 | ||
1331 | /* Like DTPREL16, but no overflow. */ | |
1332 | HOWTO (R_PPC64_DTPREL16_LO, | |
1333 | 0, /* rightshift */ | |
1334 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1335 | 16, /* bitsize */ | |
1336 | FALSE, /* pc_relative */ | |
1337 | 0, /* bitpos */ | |
1338 | complain_overflow_dont, /* complain_on_overflow */ | |
1339 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1340 | "R_PPC64_DTPREL16_LO", /* name */ | |
1341 | FALSE, /* partial_inplace */ | |
1342 | 0, /* src_mask */ | |
1343 | 0xffff, /* dst_mask */ | |
1344 | FALSE), /* pcrel_offset */ | |
1345 | ||
1346 | /* Like DTPREL16_LO, but next higher group of 16 bits. */ | |
1347 | HOWTO (R_PPC64_DTPREL16_HI, | |
1348 | 16, /* rightshift */ | |
1349 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1350 | 16, /* bitsize */ | |
1351 | FALSE, /* pc_relative */ | |
1352 | 0, /* bitpos */ | |
1353 | complain_overflow_dont, /* complain_on_overflow */ | |
1354 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1355 | "R_PPC64_DTPREL16_HI", /* name */ | |
1356 | FALSE, /* partial_inplace */ | |
1357 | 0, /* src_mask */ | |
1358 | 0xffff, /* dst_mask */ | |
1359 | FALSE), /* pcrel_offset */ | |
1360 | ||
1361 | /* Like DTPREL16_HI, but adjust for low 16 bits. */ | |
1362 | HOWTO (R_PPC64_DTPREL16_HA, | |
1363 | 16, /* rightshift */ | |
1364 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1365 | 16, /* bitsize */ | |
1366 | FALSE, /* pc_relative */ | |
1367 | 0, /* bitpos */ | |
1368 | complain_overflow_dont, /* complain_on_overflow */ | |
1369 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1370 | "R_PPC64_DTPREL16_HA", /* name */ | |
1371 | FALSE, /* partial_inplace */ | |
1372 | 0, /* src_mask */ | |
1373 | 0xffff, /* dst_mask */ | |
1374 | FALSE), /* pcrel_offset */ | |
1375 | ||
1376 | /* Like DTPREL16_HI, but next higher group of 16 bits. */ | |
1377 | HOWTO (R_PPC64_DTPREL16_HIGHER, | |
1378 | 32, /* rightshift */ | |
1379 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1380 | 16, /* bitsize */ | |
1381 | FALSE, /* pc_relative */ | |
1382 | 0, /* bitpos */ | |
1383 | complain_overflow_dont, /* complain_on_overflow */ | |
1384 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1385 | "R_PPC64_DTPREL16_HIGHER", /* name */ | |
1386 | FALSE, /* partial_inplace */ | |
1387 | 0, /* src_mask */ | |
1388 | 0xffff, /* dst_mask */ | |
1389 | FALSE), /* pcrel_offset */ | |
1390 | ||
1391 | /* Like DTPREL16_HIGHER, but adjust for low 16 bits. */ | |
1392 | HOWTO (R_PPC64_DTPREL16_HIGHERA, | |
1393 | 32, /* rightshift */ | |
1394 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1395 | 16, /* bitsize */ | |
1396 | FALSE, /* pc_relative */ | |
1397 | 0, /* bitpos */ | |
1398 | complain_overflow_dont, /* complain_on_overflow */ | |
1399 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1400 | "R_PPC64_DTPREL16_HIGHERA", /* name */ | |
1401 | FALSE, /* partial_inplace */ | |
1402 | 0, /* src_mask */ | |
1403 | 0xffff, /* dst_mask */ | |
1404 | FALSE), /* pcrel_offset */ | |
1405 | ||
1406 | /* Like DTPREL16_HIGHER, but next higher group of 16 bits. */ | |
1407 | HOWTO (R_PPC64_DTPREL16_HIGHEST, | |
1408 | 48, /* rightshift */ | |
1409 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1410 | 16, /* bitsize */ | |
1411 | FALSE, /* pc_relative */ | |
1412 | 0, /* bitpos */ | |
1413 | complain_overflow_dont, /* complain_on_overflow */ | |
1414 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1415 | "R_PPC64_DTPREL16_HIGHEST", /* name */ | |
1416 | FALSE, /* partial_inplace */ | |
1417 | 0, /* src_mask */ | |
1418 | 0xffff, /* dst_mask */ | |
1419 | FALSE), /* pcrel_offset */ | |
1420 | ||
1421 | /* Like DTPREL16_HIGHEST, but adjust for low 16 bits. */ | |
1422 | HOWTO (R_PPC64_DTPREL16_HIGHESTA, | |
1423 | 48, /* rightshift */ | |
1424 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1425 | 16, /* bitsize */ | |
1426 | FALSE, /* pc_relative */ | |
1427 | 0, /* bitpos */ | |
1428 | complain_overflow_dont, /* complain_on_overflow */ | |
1429 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1430 | "R_PPC64_DTPREL16_HIGHESTA", /* name */ | |
1431 | FALSE, /* partial_inplace */ | |
1432 | 0, /* src_mask */ | |
1433 | 0xffff, /* dst_mask */ | |
1434 | FALSE), /* pcrel_offset */ | |
1435 | ||
1436 | /* Like DTPREL16, but for insns with a DS field. */ | |
1437 | HOWTO (R_PPC64_DTPREL16_DS, | |
1438 | 0, /* rightshift */ | |
1439 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1440 | 16, /* bitsize */ | |
1441 | FALSE, /* pc_relative */ | |
1442 | 0, /* bitpos */ | |
1443 | complain_overflow_signed, /* complain_on_overflow */ | |
1444 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1445 | "R_PPC64_DTPREL16_DS", /* name */ | |
1446 | FALSE, /* partial_inplace */ | |
1447 | 0, /* src_mask */ | |
1448 | 0xfffc, /* dst_mask */ | |
1449 | FALSE), /* pcrel_offset */ | |
1450 | ||
1451 | /* Like DTPREL16_DS, but no overflow. */ | |
1452 | HOWTO (R_PPC64_DTPREL16_LO_DS, | |
1453 | 0, /* rightshift */ | |
1454 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1455 | 16, /* bitsize */ | |
1456 | FALSE, /* pc_relative */ | |
1457 | 0, /* bitpos */ | |
1458 | complain_overflow_dont, /* complain_on_overflow */ | |
1459 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1460 | "R_PPC64_DTPREL16_LO_DS", /* name */ | |
1461 | FALSE, /* partial_inplace */ | |
1462 | 0, /* src_mask */ | |
1463 | 0xfffc, /* dst_mask */ | |
1464 | FALSE), /* pcrel_offset */ | |
1465 | ||
1466 | /* Computes a tp-relative displacement, the difference between the value of | |
1467 | sym+add and the value of the thread pointer (r13). */ | |
1468 | HOWTO (R_PPC64_TPREL64, | |
1469 | 0, /* rightshift */ | |
1470 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
1471 | 64, /* bitsize */ | |
1472 | FALSE, /* pc_relative */ | |
1473 | 0, /* bitpos */ | |
1474 | complain_overflow_dont, /* complain_on_overflow */ | |
1475 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1476 | "R_PPC64_TPREL64", /* name */ | |
1477 | FALSE, /* partial_inplace */ | |
1478 | 0, /* src_mask */ | |
1479 | ONES (64), /* dst_mask */ | |
1480 | FALSE), /* pcrel_offset */ | |
1481 | ||
1482 | /* A 16 bit tprel reloc. */ | |
1483 | HOWTO (R_PPC64_TPREL16, | |
1484 | 0, /* rightshift */ | |
1485 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1486 | 16, /* bitsize */ | |
1487 | FALSE, /* pc_relative */ | |
1488 | 0, /* bitpos */ | |
1489 | complain_overflow_signed, /* complain_on_overflow */ | |
1490 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1491 | "R_PPC64_TPREL16", /* name */ | |
1492 | FALSE, /* partial_inplace */ | |
1493 | 0, /* src_mask */ | |
1494 | 0xffff, /* dst_mask */ | |
1495 | FALSE), /* pcrel_offset */ | |
1496 | ||
1497 | /* Like TPREL16, but no overflow. */ | |
1498 | HOWTO (R_PPC64_TPREL16_LO, | |
1499 | 0, /* rightshift */ | |
1500 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1501 | 16, /* bitsize */ | |
1502 | FALSE, /* pc_relative */ | |
1503 | 0, /* bitpos */ | |
1504 | complain_overflow_dont, /* complain_on_overflow */ | |
1505 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1506 | "R_PPC64_TPREL16_LO", /* name */ | |
1507 | FALSE, /* partial_inplace */ | |
1508 | 0, /* src_mask */ | |
1509 | 0xffff, /* dst_mask */ | |
1510 | FALSE), /* pcrel_offset */ | |
1511 | ||
1512 | /* Like TPREL16_LO, but next higher group of 16 bits. */ | |
1513 | HOWTO (R_PPC64_TPREL16_HI, | |
1514 | 16, /* rightshift */ | |
1515 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1516 | 16, /* bitsize */ | |
1517 | FALSE, /* pc_relative */ | |
1518 | 0, /* bitpos */ | |
1519 | complain_overflow_dont, /* complain_on_overflow */ | |
1520 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1521 | "R_PPC64_TPREL16_HI", /* name */ | |
1522 | FALSE, /* partial_inplace */ | |
1523 | 0, /* src_mask */ | |
1524 | 0xffff, /* dst_mask */ | |
1525 | FALSE), /* pcrel_offset */ | |
1526 | ||
1527 | /* Like TPREL16_HI, but adjust for low 16 bits. */ | |
1528 | HOWTO (R_PPC64_TPREL16_HA, | |
1529 | 16, /* rightshift */ | |
1530 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1531 | 16, /* bitsize */ | |
1532 | FALSE, /* pc_relative */ | |
1533 | 0, /* bitpos */ | |
1534 | complain_overflow_dont, /* complain_on_overflow */ | |
1535 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1536 | "R_PPC64_TPREL16_HA", /* name */ | |
1537 | FALSE, /* partial_inplace */ | |
1538 | 0, /* src_mask */ | |
1539 | 0xffff, /* dst_mask */ | |
1540 | FALSE), /* pcrel_offset */ | |
1541 | ||
1542 | /* Like TPREL16_HI, but next higher group of 16 bits. */ | |
1543 | HOWTO (R_PPC64_TPREL16_HIGHER, | |
1544 | 32, /* rightshift */ | |
1545 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1546 | 16, /* bitsize */ | |
1547 | FALSE, /* pc_relative */ | |
1548 | 0, /* bitpos */ | |
1549 | complain_overflow_dont, /* complain_on_overflow */ | |
1550 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1551 | "R_PPC64_TPREL16_HIGHER", /* name */ | |
1552 | FALSE, /* partial_inplace */ | |
1553 | 0, /* src_mask */ | |
1554 | 0xffff, /* dst_mask */ | |
1555 | FALSE), /* pcrel_offset */ | |
1556 | ||
1557 | /* Like TPREL16_HIGHER, but adjust for low 16 bits. */ | |
1558 | HOWTO (R_PPC64_TPREL16_HIGHERA, | |
1559 | 32, /* rightshift */ | |
1560 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1561 | 16, /* bitsize */ | |
1562 | FALSE, /* pc_relative */ | |
1563 | 0, /* bitpos */ | |
1564 | complain_overflow_dont, /* complain_on_overflow */ | |
1565 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1566 | "R_PPC64_TPREL16_HIGHERA", /* name */ | |
1567 | FALSE, /* partial_inplace */ | |
1568 | 0, /* src_mask */ | |
1569 | 0xffff, /* dst_mask */ | |
1570 | FALSE), /* pcrel_offset */ | |
1571 | ||
1572 | /* Like TPREL16_HIGHER, but next higher group of 16 bits. */ | |
1573 | HOWTO (R_PPC64_TPREL16_HIGHEST, | |
1574 | 48, /* rightshift */ | |
1575 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1576 | 16, /* bitsize */ | |
1577 | FALSE, /* pc_relative */ | |
1578 | 0, /* bitpos */ | |
1579 | complain_overflow_dont, /* complain_on_overflow */ | |
1580 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1581 | "R_PPC64_TPREL16_HIGHEST", /* name */ | |
1582 | FALSE, /* partial_inplace */ | |
1583 | 0, /* src_mask */ | |
1584 | 0xffff, /* dst_mask */ | |
1585 | FALSE), /* pcrel_offset */ | |
1586 | ||
1587 | /* Like TPREL16_HIGHEST, but adjust for low 16 bits. */ | |
1588 | HOWTO (R_PPC64_TPREL16_HIGHESTA, | |
1589 | 48, /* rightshift */ | |
1590 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1591 | 16, /* bitsize */ | |
1592 | FALSE, /* pc_relative */ | |
1593 | 0, /* bitpos */ | |
1594 | complain_overflow_dont, /* complain_on_overflow */ | |
1595 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1596 | "R_PPC64_TPREL16_HIGHESTA", /* name */ | |
1597 | FALSE, /* partial_inplace */ | |
1598 | 0, /* src_mask */ | |
1599 | 0xffff, /* dst_mask */ | |
1600 | FALSE), /* pcrel_offset */ | |
1601 | ||
1602 | /* Like TPREL16, but for insns with a DS field. */ | |
1603 | HOWTO (R_PPC64_TPREL16_DS, | |
1604 | 0, /* rightshift */ | |
1605 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1606 | 16, /* bitsize */ | |
1607 | FALSE, /* pc_relative */ | |
1608 | 0, /* bitpos */ | |
1609 | complain_overflow_signed, /* complain_on_overflow */ | |
1610 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1611 | "R_PPC64_TPREL16_DS", /* name */ | |
1612 | FALSE, /* partial_inplace */ | |
1613 | 0, /* src_mask */ | |
1614 | 0xfffc, /* dst_mask */ | |
1615 | FALSE), /* pcrel_offset */ | |
1616 | ||
1617 | /* Like TPREL16_DS, but no overflow. */ | |
1618 | HOWTO (R_PPC64_TPREL16_LO_DS, | |
1619 | 0, /* rightshift */ | |
1620 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1621 | 16, /* bitsize */ | |
1622 | FALSE, /* pc_relative */ | |
1623 | 0, /* bitpos */ | |
1624 | complain_overflow_dont, /* complain_on_overflow */ | |
1625 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1626 | "R_PPC64_TPREL16_LO_DS", /* name */ | |
1627 | FALSE, /* partial_inplace */ | |
1628 | 0, /* src_mask */ | |
1629 | 0xfffc, /* dst_mask */ | |
1630 | FALSE), /* pcrel_offset */ | |
1631 | ||
1632 | /* Allocates two contiguous entries in the GOT to hold a tls_index structure, | |
1633 | with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset | |
1634 | to the first entry relative to the TOC base (r2). */ | |
1635 | HOWTO (R_PPC64_GOT_TLSGD16, | |
1636 | 0, /* rightshift */ | |
1637 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1638 | 16, /* bitsize */ | |
1639 | FALSE, /* pc_relative */ | |
1640 | 0, /* bitpos */ | |
1641 | complain_overflow_signed, /* complain_on_overflow */ | |
1642 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1643 | "R_PPC64_GOT_TLSGD16", /* name */ | |
b34976b6 | 1644 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1645 | 0, /* src_mask */ |
1646 | 0xffff, /* dst_mask */ | |
b34976b6 | 1647 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1648 | |
411e1bfb AM |
1649 | /* Like GOT_TLSGD16, but no overflow. */ |
1650 | HOWTO (R_PPC64_GOT_TLSGD16_LO, | |
5bd4f169 AM |
1651 | 0, /* rightshift */ |
1652 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1653 | 16, /* bitsize */ | |
b34976b6 | 1654 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1655 | 0, /* bitpos */ |
1656 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 1657 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1658 | "R_PPC64_GOT_TLSGD16_LO", /* name */ |
b34976b6 | 1659 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1660 | 0, /* src_mask */ |
1661 | 0xffff, /* dst_mask */ | |
b34976b6 | 1662 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1663 | |
411e1bfb AM |
1664 | /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */ |
1665 | HOWTO (R_PPC64_GOT_TLSGD16_HI, | |
5bd4f169 AM |
1666 | 16, /* rightshift */ |
1667 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1668 | 16, /* bitsize */ | |
b34976b6 | 1669 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1670 | 0, /* bitpos */ |
1671 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 1672 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1673 | "R_PPC64_GOT_TLSGD16_HI", /* name */ |
b34976b6 | 1674 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1675 | 0, /* src_mask */ |
1676 | 0xffff, /* dst_mask */ | |
b34976b6 | 1677 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1678 | |
411e1bfb AM |
1679 | /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */ |
1680 | HOWTO (R_PPC64_GOT_TLSGD16_HA, | |
5bd4f169 AM |
1681 | 16, /* rightshift */ |
1682 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1683 | 16, /* bitsize */ | |
b34976b6 | 1684 | FALSE, /* pc_relative */ |
5bd4f169 | 1685 | 0, /* bitpos */ |
411e1bfb | 1686 | complain_overflow_dont, /* complain_on_overflow */ |
805fc799 | 1687 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1688 | "R_PPC64_GOT_TLSGD16_HA", /* name */ |
b34976b6 | 1689 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1690 | 0, /* src_mask */ |
1691 | 0xffff, /* dst_mask */ | |
b34976b6 | 1692 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1693 | |
411e1bfb AM |
1694 | /* Allocates two contiguous entries in the GOT to hold a tls_index structure, |
1695 | with values (sym+add)@dtpmod and zero, and computes the offset to the | |
1696 | first entry relative to the TOC base (r2). */ | |
1697 | HOWTO (R_PPC64_GOT_TLSLD16, | |
5bd4f169 AM |
1698 | 0, /* rightshift */ |
1699 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1700 | 16, /* bitsize */ | |
b34976b6 | 1701 | FALSE, /* pc_relative */ |
5bd4f169 | 1702 | 0, /* bitpos */ |
411e1bfb AM |
1703 | complain_overflow_signed, /* complain_on_overflow */ |
1704 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1705 | "R_PPC64_GOT_TLSLD16", /* name */ | |
b34976b6 | 1706 | FALSE, /* partial_inplace */ |
d006db6c | 1707 | 0, /* src_mask */ |
411e1bfb | 1708 | 0xffff, /* dst_mask */ |
b34976b6 | 1709 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1710 | |
411e1bfb AM |
1711 | /* Like GOT_TLSLD16, but no overflow. */ |
1712 | HOWTO (R_PPC64_GOT_TLSLD16_LO, | |
5bd4f169 AM |
1713 | 0, /* rightshift */ |
1714 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1715 | 16, /* bitsize */ | |
b34976b6 | 1716 | FALSE, /* pc_relative */ |
5bd4f169 | 1717 | 0, /* bitpos */ |
411e1bfb AM |
1718 | complain_overflow_dont, /* complain_on_overflow */ |
1719 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1720 | "R_PPC64_GOT_TLSLD16_LO", /* name */ | |
b34976b6 | 1721 | FALSE, /* partial_inplace */ |
d006db6c | 1722 | 0, /* src_mask */ |
411e1bfb | 1723 | 0xffff, /* dst_mask */ |
b34976b6 | 1724 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1725 | |
411e1bfb AM |
1726 | /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */ |
1727 | HOWTO (R_PPC64_GOT_TLSLD16_HI, | |
1728 | 16, /* rightshift */ | |
5bd4f169 AM |
1729 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1730 | 16, /* bitsize */ | |
b34976b6 | 1731 | FALSE, /* pc_relative */ |
5bd4f169 | 1732 | 0, /* bitpos */ |
411e1bfb | 1733 | complain_overflow_dont, /* complain_on_overflow */ |
805fc799 | 1734 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1735 | "R_PPC64_GOT_TLSLD16_HI", /* name */ |
b34976b6 | 1736 | FALSE, /* partial_inplace */ |
d006db6c | 1737 | 0, /* src_mask */ |
411e1bfb | 1738 | 0xffff, /* dst_mask */ |
b34976b6 | 1739 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1740 | |
411e1bfb AM |
1741 | /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */ |
1742 | HOWTO (R_PPC64_GOT_TLSLD16_HA, | |
1743 | 16, /* rightshift */ | |
5bd4f169 AM |
1744 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1745 | 16, /* bitsize */ | |
b34976b6 | 1746 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1747 | 0, /* bitpos */ |
1748 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 1749 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1750 | "R_PPC64_GOT_TLSLD16_HA", /* name */ |
b34976b6 | 1751 | FALSE, /* partial_inplace */ |
d006db6c | 1752 | 0, /* src_mask */ |
411e1bfb | 1753 | 0xffff, /* dst_mask */ |
b34976b6 | 1754 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1755 | |
411e1bfb AM |
1756 | /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes |
1757 | the offset to the entry relative to the TOC base (r2). */ | |
1758 | HOWTO (R_PPC64_GOT_DTPREL16_DS, | |
5bd4f169 AM |
1759 | 0, /* rightshift */ |
1760 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1761 | 16, /* bitsize */ | |
b34976b6 | 1762 | FALSE, /* pc_relative */ |
5bd4f169 | 1763 | 0, /* bitpos */ |
411e1bfb | 1764 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 1765 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1766 | "R_PPC64_GOT_DTPREL16_DS", /* name */ |
b34976b6 | 1767 | FALSE, /* partial_inplace */ |
d006db6c | 1768 | 0, /* src_mask */ |
5bd4f169 | 1769 | 0xfffc, /* dst_mask */ |
b34976b6 | 1770 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1771 | |
411e1bfb AM |
1772 | /* Like GOT_DTPREL16_DS, but no overflow. */ |
1773 | HOWTO (R_PPC64_GOT_DTPREL16_LO_DS, | |
5bd4f169 | 1774 | 0, /* rightshift */ |
c061c2d8 AM |
1775 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1776 | 16, /* bitsize */ | |
b34976b6 | 1777 | FALSE, /* pc_relative */ |
5bd4f169 | 1778 | 0, /* bitpos */ |
411e1bfb AM |
1779 | complain_overflow_dont, /* complain_on_overflow */ |
1780 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1781 | "R_PPC64_GOT_DTPREL16_LO_DS", /* name */ | |
b34976b6 | 1782 | FALSE, /* partial_inplace */ |
d006db6c | 1783 | 0, /* src_mask */ |
c061c2d8 | 1784 | 0xfffc, /* dst_mask */ |
b34976b6 | 1785 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1786 | |
411e1bfb AM |
1787 | /* Like GOT_DTPREL16_LO_DS, but next higher group of 16 bits. */ |
1788 | HOWTO (R_PPC64_GOT_DTPREL16_HI, | |
1789 | 16, /* rightshift */ | |
5bd4f169 AM |
1790 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1791 | 16, /* bitsize */ | |
b34976b6 | 1792 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1793 | 0, /* bitpos */ |
1794 | complain_overflow_dont, /* complain_on_overflow */ | |
411e1bfb AM |
1795 | ppc64_elf_unhandled_reloc, /* special_function */ |
1796 | "R_PPC64_GOT_DTPREL16_HI", /* name */ | |
b34976b6 | 1797 | FALSE, /* partial_inplace */ |
d006db6c | 1798 | 0, /* src_mask */ |
411e1bfb | 1799 | 0xffff, /* dst_mask */ |
b34976b6 | 1800 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1801 | |
411e1bfb AM |
1802 | /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */ |
1803 | HOWTO (R_PPC64_GOT_DTPREL16_HA, | |
1804 | 16, /* rightshift */ | |
1805 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1806 | 16, /* bitsize */ | |
1807 | FALSE, /* pc_relative */ | |
1808 | 0, /* bitpos */ | |
1809 | complain_overflow_dont, /* complain_on_overflow */ | |
1810 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1811 | "R_PPC64_GOT_DTPREL16_HA", /* name */ | |
1812 | FALSE, /* partial_inplace */ | |
1813 | 0, /* src_mask */ | |
1814 | 0xffff, /* dst_mask */ | |
1815 | FALSE), /* pcrel_offset */ | |
1816 | ||
1817 | /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the | |
1818 | offset to the entry relative to the TOC base (r2). */ | |
1819 | HOWTO (R_PPC64_GOT_TPREL16_DS, | |
5bd4f169 AM |
1820 | 0, /* rightshift */ |
1821 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1822 | 16, /* bitsize */ | |
b34976b6 | 1823 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1824 | 0, /* bitpos */ |
1825 | complain_overflow_signed, /* complain_on_overflow */ | |
411e1bfb AM |
1826 | ppc64_elf_unhandled_reloc, /* special_function */ |
1827 | "R_PPC64_GOT_TPREL16_DS", /* name */ | |
b34976b6 | 1828 | FALSE, /* partial_inplace */ |
d006db6c | 1829 | 0, /* src_mask */ |
ad8e1ba5 | 1830 | 0xfffc, /* dst_mask */ |
b34976b6 | 1831 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1832 | |
411e1bfb AM |
1833 | /* Like GOT_TPREL16_DS, but no overflow. */ |
1834 | HOWTO (R_PPC64_GOT_TPREL16_LO_DS, | |
5bd4f169 AM |
1835 | 0, /* rightshift */ |
1836 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1837 | 16, /* bitsize */ | |
b34976b6 | 1838 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1839 | 0, /* bitpos */ |
1840 | complain_overflow_dont, /* complain_on_overflow */ | |
411e1bfb AM |
1841 | ppc64_elf_unhandled_reloc, /* special_function */ |
1842 | "R_PPC64_GOT_TPREL16_LO_DS", /* name */ | |
b34976b6 | 1843 | FALSE, /* partial_inplace */ |
d006db6c | 1844 | 0, /* src_mask */ |
ad8e1ba5 | 1845 | 0xfffc, /* dst_mask */ |
b34976b6 | 1846 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1847 | |
411e1bfb AM |
1848 | /* Like GOT_TPREL16_LO_DS, but next higher group of 16 bits. */ |
1849 | HOWTO (R_PPC64_GOT_TPREL16_HI, | |
1850 | 16, /* rightshift */ | |
5bd4f169 AM |
1851 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1852 | 16, /* bitsize */ | |
b34976b6 | 1853 | FALSE, /* pc_relative */ |
5bd4f169 | 1854 | 0, /* bitpos */ |
411e1bfb | 1855 | complain_overflow_dont, /* complain_on_overflow */ |
805fc799 | 1856 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1857 | "R_PPC64_GOT_TPREL16_HI", /* name */ |
b34976b6 | 1858 | FALSE, /* partial_inplace */ |
d006db6c | 1859 | 0, /* src_mask */ |
411e1bfb | 1860 | 0xffff, /* dst_mask */ |
b34976b6 | 1861 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1862 | |
411e1bfb AM |
1863 | /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */ |
1864 | HOWTO (R_PPC64_GOT_TPREL16_HA, | |
1865 | 16, /* rightshift */ | |
5bd4f169 AM |
1866 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1867 | 16, /* bitsize */ | |
b34976b6 | 1868 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1869 | 0, /* bitpos */ |
1870 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 1871 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1872 | "R_PPC64_GOT_TPREL16_HA", /* name */ |
b34976b6 | 1873 | FALSE, /* partial_inplace */ |
d006db6c | 1874 | 0, /* src_mask */ |
411e1bfb | 1875 | 0xffff, /* dst_mask */ |
b34976b6 | 1876 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1877 | |
25f23106 AM |
1878 | HOWTO (R_PPC64_JMP_IREL, /* type */ |
1879 | 0, /* rightshift */ | |
1880 | 0, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
1881 | 0, /* bitsize */ | |
1882 | FALSE, /* pc_relative */ | |
1883 | 0, /* bitpos */ | |
1884 | complain_overflow_dont, /* complain_on_overflow */ | |
1885 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1886 | "R_PPC64_JMP_IREL", /* name */ | |
1887 | FALSE, /* partial_inplace */ | |
1888 | 0, /* src_mask */ | |
1889 | 0, /* dst_mask */ | |
1890 | FALSE), /* pcrel_offset */ | |
1891 | ||
e054468f AM |
1892 | HOWTO (R_PPC64_IRELATIVE, /* type */ |
1893 | 0, /* rightshift */ | |
1894 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
1895 | 64, /* bitsize */ | |
1896 | FALSE, /* pc_relative */ | |
1897 | 0, /* bitpos */ | |
1898 | complain_overflow_dont, /* complain_on_overflow */ | |
1899 | bfd_elf_generic_reloc, /* special_function */ | |
1900 | "R_PPC64_IRELATIVE", /* name */ | |
1901 | FALSE, /* partial_inplace */ | |
1902 | 0, /* src_mask */ | |
1903 | ONES (64), /* dst_mask */ | |
1904 | FALSE), /* pcrel_offset */ | |
1905 | ||
25f23106 AM |
1906 | /* A 16 bit relative relocation. */ |
1907 | HOWTO (R_PPC64_REL16, /* type */ | |
1908 | 0, /* rightshift */ | |
1909 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1910 | 16, /* bitsize */ | |
1911 | TRUE, /* pc_relative */ | |
1912 | 0, /* bitpos */ | |
1913 | complain_overflow_bitfield, /* complain_on_overflow */ | |
1914 | bfd_elf_generic_reloc, /* special_function */ | |
1915 | "R_PPC64_REL16", /* name */ | |
1916 | FALSE, /* partial_inplace */ | |
1917 | 0, /* src_mask */ | |
1918 | 0xffff, /* dst_mask */ | |
1919 | TRUE), /* pcrel_offset */ | |
1920 | ||
1921 | /* A 16 bit relative relocation without overflow. */ | |
1922 | HOWTO (R_PPC64_REL16_LO, /* type */ | |
1923 | 0, /* rightshift */ | |
1924 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1925 | 16, /* bitsize */ | |
1926 | TRUE, /* pc_relative */ | |
1927 | 0, /* bitpos */ | |
1928 | complain_overflow_dont,/* complain_on_overflow */ | |
1929 | bfd_elf_generic_reloc, /* special_function */ | |
1930 | "R_PPC64_REL16_LO", /* name */ | |
1931 | FALSE, /* partial_inplace */ | |
1932 | 0, /* src_mask */ | |
1933 | 0xffff, /* dst_mask */ | |
1934 | TRUE), /* pcrel_offset */ | |
1935 | ||
1936 | /* The high order 16 bits of a relative address. */ | |
1937 | HOWTO (R_PPC64_REL16_HI, /* type */ | |
1938 | 16, /* rightshift */ | |
1939 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1940 | 16, /* bitsize */ | |
1941 | TRUE, /* pc_relative */ | |
1942 | 0, /* bitpos */ | |
1943 | complain_overflow_dont, /* complain_on_overflow */ | |
1944 | bfd_elf_generic_reloc, /* special_function */ | |
1945 | "R_PPC64_REL16_HI", /* name */ | |
1946 | FALSE, /* partial_inplace */ | |
1947 | 0, /* src_mask */ | |
1948 | 0xffff, /* dst_mask */ | |
1949 | TRUE), /* pcrel_offset */ | |
1950 | ||
1951 | /* The high order 16 bits of a relative address, plus 1 if the contents of | |
1952 | the low 16 bits, treated as a signed number, is negative. */ | |
1953 | HOWTO (R_PPC64_REL16_HA, /* type */ | |
1954 | 16, /* rightshift */ | |
1955 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1956 | 16, /* bitsize */ | |
1957 | TRUE, /* pc_relative */ | |
1958 | 0, /* bitpos */ | |
1959 | complain_overflow_dont, /* complain_on_overflow */ | |
1960 | ppc64_elf_ha_reloc, /* special_function */ | |
1961 | "R_PPC64_REL16_HA", /* name */ | |
1962 | FALSE, /* partial_inplace */ | |
1963 | 0, /* src_mask */ | |
1964 | 0xffff, /* dst_mask */ | |
1965 | TRUE), /* pcrel_offset */ | |
1966 | ||
5bd4f169 AM |
1967 | /* GNU extension to record C++ vtable hierarchy. */ |
1968 | HOWTO (R_PPC64_GNU_VTINHERIT, /* type */ | |
1969 | 0, /* rightshift */ | |
1970 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
1971 | 0, /* bitsize */ | |
b34976b6 | 1972 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1973 | 0, /* bitpos */ |
1974 | complain_overflow_dont, /* complain_on_overflow */ | |
1975 | NULL, /* special_function */ | |
1976 | "R_PPC64_GNU_VTINHERIT", /* name */ | |
b34976b6 | 1977 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1978 | 0, /* src_mask */ |
1979 | 0, /* dst_mask */ | |
b34976b6 | 1980 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
1981 | |
1982 | /* GNU extension to record C++ vtable member usage. */ | |
1983 | HOWTO (R_PPC64_GNU_VTENTRY, /* type */ | |
1984 | 0, /* rightshift */ | |
1985 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
1986 | 0, /* bitsize */ | |
b34976b6 | 1987 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1988 | 0, /* bitpos */ |
1989 | complain_overflow_dont, /* complain_on_overflow */ | |
1990 | NULL, /* special_function */ | |
1991 | "R_PPC64_GNU_VTENTRY", /* name */ | |
b34976b6 | 1992 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1993 | 0, /* src_mask */ |
1994 | 0, /* dst_mask */ | |
b34976b6 | 1995 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
1996 | }; |
1997 | ||
1998 | \f | |
1999 | /* Initialize the ppc64_elf_howto_table, so that linear accesses can | |
2000 | be done. */ | |
2001 | ||
2002 | static void | |
4ce794b7 | 2003 | ppc_howto_init (void) |
5bd4f169 AM |
2004 | { |
2005 | unsigned int i, type; | |
2006 | ||
2007 | for (i = 0; | |
2008 | i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]); | |
2009 | i++) | |
2010 | { | |
2011 | type = ppc64_elf_howto_raw[i].type; | |
2012 | BFD_ASSERT (type < (sizeof (ppc64_elf_howto_table) | |
2013 | / sizeof (ppc64_elf_howto_table[0]))); | |
2014 | ppc64_elf_howto_table[type] = &ppc64_elf_howto_raw[i]; | |
2015 | } | |
2016 | } | |
2017 | ||
2018 | static reloc_howto_type * | |
4ce794b7 AM |
2019 | ppc64_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, |
2020 | bfd_reloc_code_real_type code) | |
5bd4f169 | 2021 | { |
411e1bfb | 2022 | enum elf_ppc64_reloc_type r = R_PPC64_NONE; |
5bd4f169 AM |
2023 | |
2024 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) | |
2025 | /* Initialize howto table if needed. */ | |
2026 | ppc_howto_init (); | |
2027 | ||
4ce794b7 | 2028 | switch (code) |
5bd4f169 AM |
2029 | { |
2030 | default: | |
4ce794b7 | 2031 | return NULL; |
5bd4f169 | 2032 | |
411e1bfb AM |
2033 | case BFD_RELOC_NONE: r = R_PPC64_NONE; |
2034 | break; | |
2035 | case BFD_RELOC_32: r = R_PPC64_ADDR32; | |
2036 | break; | |
2037 | case BFD_RELOC_PPC_BA26: r = R_PPC64_ADDR24; | |
2038 | break; | |
2039 | case BFD_RELOC_16: r = R_PPC64_ADDR16; | |
2040 | break; | |
2041 | case BFD_RELOC_LO16: r = R_PPC64_ADDR16_LO; | |
2042 | break; | |
2043 | case BFD_RELOC_HI16: r = R_PPC64_ADDR16_HI; | |
2044 | break; | |
2045 | case BFD_RELOC_HI16_S: r = R_PPC64_ADDR16_HA; | |
5bd4f169 | 2046 | break; |
411e1bfb | 2047 | case BFD_RELOC_PPC_BA16: r = R_PPC64_ADDR14; |
5bd4f169 | 2048 | break; |
411e1bfb | 2049 | case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC64_ADDR14_BRTAKEN; |
5bd4f169 | 2050 | break; |
411e1bfb | 2051 | case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC64_ADDR14_BRNTAKEN; |
5bd4f169 | 2052 | break; |
411e1bfb | 2053 | case BFD_RELOC_PPC_B26: r = R_PPC64_REL24; |
5bd4f169 | 2054 | break; |
411e1bfb | 2055 | case BFD_RELOC_PPC_B16: r = R_PPC64_REL14; |
5bd4f169 | 2056 | break; |
411e1bfb | 2057 | case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC64_REL14_BRTAKEN; |
5bd4f169 | 2058 | break; |
411e1bfb | 2059 | case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC64_REL14_BRNTAKEN; |
5bd4f169 | 2060 | break; |
411e1bfb | 2061 | case BFD_RELOC_16_GOTOFF: r = R_PPC64_GOT16; |
5bd4f169 | 2062 | break; |
411e1bfb | 2063 | case BFD_RELOC_LO16_GOTOFF: r = R_PPC64_GOT16_LO; |
5bd4f169 | 2064 | break; |
411e1bfb | 2065 | case BFD_RELOC_HI16_GOTOFF: r = R_PPC64_GOT16_HI; |
5bd4f169 | 2066 | break; |
411e1bfb | 2067 | case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC64_GOT16_HA; |
5bd4f169 | 2068 | break; |
411e1bfb | 2069 | case BFD_RELOC_PPC_COPY: r = R_PPC64_COPY; |
5bd4f169 | 2070 | break; |
411e1bfb | 2071 | case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC64_GLOB_DAT; |
5bd4f169 | 2072 | break; |
411e1bfb | 2073 | case BFD_RELOC_32_PCREL: r = R_PPC64_REL32; |
5bd4f169 | 2074 | break; |
411e1bfb | 2075 | case BFD_RELOC_32_PLTOFF: r = R_PPC64_PLT32; |
5bd4f169 | 2076 | break; |
411e1bfb | 2077 | case BFD_RELOC_32_PLT_PCREL: r = R_PPC64_PLTREL32; |
5bd4f169 | 2078 | break; |
411e1bfb | 2079 | case BFD_RELOC_LO16_PLTOFF: r = R_PPC64_PLT16_LO; |
5bd4f169 | 2080 | break; |
411e1bfb | 2081 | case BFD_RELOC_HI16_PLTOFF: r = R_PPC64_PLT16_HI; |
5bd4f169 | 2082 | break; |
411e1bfb | 2083 | case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC64_PLT16_HA; |
5bd4f169 | 2084 | break; |
411e1bfb | 2085 | case BFD_RELOC_16_BASEREL: r = R_PPC64_SECTOFF; |
5bd4f169 | 2086 | break; |
411e1bfb | 2087 | case BFD_RELOC_LO16_BASEREL: r = R_PPC64_SECTOFF_LO; |
5bd4f169 | 2088 | break; |
411e1bfb | 2089 | case BFD_RELOC_HI16_BASEREL: r = R_PPC64_SECTOFF_HI; |
5bd4f169 | 2090 | break; |
411e1bfb | 2091 | case BFD_RELOC_HI16_S_BASEREL: r = R_PPC64_SECTOFF_HA; |
5bd4f169 | 2092 | break; |
411e1bfb | 2093 | case BFD_RELOC_CTOR: r = R_PPC64_ADDR64; |
5bd4f169 | 2094 | break; |
411e1bfb | 2095 | case BFD_RELOC_64: r = R_PPC64_ADDR64; |
5bd4f169 | 2096 | break; |
411e1bfb | 2097 | case BFD_RELOC_PPC64_HIGHER: r = R_PPC64_ADDR16_HIGHER; |
5bd4f169 | 2098 | break; |
411e1bfb | 2099 | case BFD_RELOC_PPC64_HIGHER_S: r = R_PPC64_ADDR16_HIGHERA; |
5bd4f169 | 2100 | break; |
411e1bfb | 2101 | case BFD_RELOC_PPC64_HIGHEST: r = R_PPC64_ADDR16_HIGHEST; |
5bd4f169 | 2102 | break; |
411e1bfb | 2103 | case BFD_RELOC_PPC64_HIGHEST_S: r = R_PPC64_ADDR16_HIGHESTA; |
5bd4f169 | 2104 | break; |
411e1bfb | 2105 | case BFD_RELOC_64_PCREL: r = R_PPC64_REL64; |
5bd4f169 | 2106 | break; |
411e1bfb | 2107 | case BFD_RELOC_64_PLTOFF: r = R_PPC64_PLT64; |
5bd4f169 | 2108 | break; |
411e1bfb | 2109 | case BFD_RELOC_64_PLT_PCREL: r = R_PPC64_PLTREL64; |
5bd4f169 | 2110 | break; |
411e1bfb | 2111 | case BFD_RELOC_PPC_TOC16: r = R_PPC64_TOC16; |
5bd4f169 | 2112 | break; |
411e1bfb | 2113 | case BFD_RELOC_PPC64_TOC16_LO: r = R_PPC64_TOC16_LO; |
5bd4f169 | 2114 | break; |
411e1bfb | 2115 | case BFD_RELOC_PPC64_TOC16_HI: r = R_PPC64_TOC16_HI; |
5bd4f169 | 2116 | break; |
411e1bfb | 2117 | case BFD_RELOC_PPC64_TOC16_HA: r = R_PPC64_TOC16_HA; |
5bd4f169 | 2118 | break; |
411e1bfb | 2119 | case BFD_RELOC_PPC64_TOC: r = R_PPC64_TOC; |
5bd4f169 | 2120 | break; |
411e1bfb | 2121 | case BFD_RELOC_PPC64_PLTGOT16: r = R_PPC64_PLTGOT16; |
5bd4f169 | 2122 | break; |
411e1bfb | 2123 | case BFD_RELOC_PPC64_PLTGOT16_LO: r = R_PPC64_PLTGOT16_LO; |
5bd4f169 | 2124 | break; |
411e1bfb | 2125 | case BFD_RELOC_PPC64_PLTGOT16_HI: r = R_PPC64_PLTGOT16_HI; |
5bd4f169 | 2126 | break; |
411e1bfb | 2127 | case BFD_RELOC_PPC64_PLTGOT16_HA: r = R_PPC64_PLTGOT16_HA; |
5bd4f169 | 2128 | break; |
411e1bfb | 2129 | case BFD_RELOC_PPC64_ADDR16_DS: r = R_PPC64_ADDR16_DS; |
5bd4f169 | 2130 | break; |
411e1bfb | 2131 | case BFD_RELOC_PPC64_ADDR16_LO_DS: r = R_PPC64_ADDR16_LO_DS; |
5bd4f169 | 2132 | break; |
411e1bfb | 2133 | case BFD_RELOC_PPC64_GOT16_DS: r = R_PPC64_GOT16_DS; |
5bd4f169 | 2134 | break; |
411e1bfb | 2135 | case BFD_RELOC_PPC64_GOT16_LO_DS: r = R_PPC64_GOT16_LO_DS; |
5bd4f169 | 2136 | break; |
411e1bfb | 2137 | case BFD_RELOC_PPC64_PLT16_LO_DS: r = R_PPC64_PLT16_LO_DS; |
5bd4f169 | 2138 | break; |
411e1bfb | 2139 | case BFD_RELOC_PPC64_SECTOFF_DS: r = R_PPC64_SECTOFF_DS; |
5bd4f169 | 2140 | break; |
411e1bfb | 2141 | case BFD_RELOC_PPC64_SECTOFF_LO_DS: r = R_PPC64_SECTOFF_LO_DS; |
5bd4f169 | 2142 | break; |
411e1bfb | 2143 | case BFD_RELOC_PPC64_TOC16_DS: r = R_PPC64_TOC16_DS; |
5bd4f169 | 2144 | break; |
411e1bfb | 2145 | case BFD_RELOC_PPC64_TOC16_LO_DS: r = R_PPC64_TOC16_LO_DS; |
5bd4f169 | 2146 | break; |
411e1bfb | 2147 | case BFD_RELOC_PPC64_PLTGOT16_DS: r = R_PPC64_PLTGOT16_DS; |
5bd4f169 | 2148 | break; |
411e1bfb | 2149 | case BFD_RELOC_PPC64_PLTGOT16_LO_DS: r = R_PPC64_PLTGOT16_LO_DS; |
5bd4f169 | 2150 | break; |
411e1bfb | 2151 | case BFD_RELOC_PPC_TLS: r = R_PPC64_TLS; |
5bd4f169 | 2152 | break; |
727fc41e AM |
2153 | case BFD_RELOC_PPC_TLSGD: r = R_PPC64_TLSGD; |
2154 | break; | |
2155 | case BFD_RELOC_PPC_TLSLD: r = R_PPC64_TLSLD; | |
2156 | break; | |
411e1bfb | 2157 | case BFD_RELOC_PPC_DTPMOD: r = R_PPC64_DTPMOD64; |
5bd4f169 | 2158 | break; |
411e1bfb | 2159 | case BFD_RELOC_PPC_TPREL16: r = R_PPC64_TPREL16; |
5bd4f169 | 2160 | break; |
411e1bfb | 2161 | case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC64_TPREL16_LO; |
5bd4f169 | 2162 | break; |
411e1bfb | 2163 | case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC64_TPREL16_HI; |
5bd4f169 | 2164 | break; |
411e1bfb | 2165 | case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC64_TPREL16_HA; |
5bd4f169 | 2166 | break; |
411e1bfb | 2167 | case BFD_RELOC_PPC_TPREL: r = R_PPC64_TPREL64; |
5bd4f169 | 2168 | break; |
411e1bfb AM |
2169 | case BFD_RELOC_PPC_DTPREL16: r = R_PPC64_DTPREL16; |
2170 | break; | |
2171 | case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC64_DTPREL16_LO; | |
2172 | break; | |
2173 | case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC64_DTPREL16_HI; | |
2174 | break; | |
2175 | case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC64_DTPREL16_HA; | |
2176 | break; | |
2177 | case BFD_RELOC_PPC_DTPREL: r = R_PPC64_DTPREL64; | |
2178 | break; | |
2179 | case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC64_GOT_TLSGD16; | |
2180 | break; | |
2181 | case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC64_GOT_TLSGD16_LO; | |
2182 | break; | |
2183 | case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC64_GOT_TLSGD16_HI; | |
2184 | break; | |
2185 | case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC64_GOT_TLSGD16_HA; | |
2186 | break; | |
2187 | case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC64_GOT_TLSLD16; | |
2188 | break; | |
2189 | case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC64_GOT_TLSLD16_LO; | |
2190 | break; | |
2191 | case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC64_GOT_TLSLD16_HI; | |
2192 | break; | |
2193 | case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC64_GOT_TLSLD16_HA; | |
2194 | break; | |
2195 | case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC64_GOT_TPREL16_DS; | |
2196 | break; | |
2197 | case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC64_GOT_TPREL16_LO_DS; | |
2198 | break; | |
2199 | case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC64_GOT_TPREL16_HI; | |
2200 | break; | |
2201 | case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC64_GOT_TPREL16_HA; | |
2202 | break; | |
2203 | case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC64_GOT_DTPREL16_DS; | |
2204 | break; | |
2205 | case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC64_GOT_DTPREL16_LO_DS; | |
2206 | break; | |
2207 | case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC64_GOT_DTPREL16_HI; | |
2208 | break; | |
2209 | case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC64_GOT_DTPREL16_HA; | |
2210 | break; | |
2211 | case BFD_RELOC_PPC64_TPREL16_DS: r = R_PPC64_TPREL16_DS; | |
2212 | break; | |
2213 | case BFD_RELOC_PPC64_TPREL16_LO_DS: r = R_PPC64_TPREL16_LO_DS; | |
2214 | break; | |
2215 | case BFD_RELOC_PPC64_TPREL16_HIGHER: r = R_PPC64_TPREL16_HIGHER; | |
2216 | break; | |
2217 | case BFD_RELOC_PPC64_TPREL16_HIGHERA: r = R_PPC64_TPREL16_HIGHERA; | |
2218 | break; | |
2219 | case BFD_RELOC_PPC64_TPREL16_HIGHEST: r = R_PPC64_TPREL16_HIGHEST; | |
2220 | break; | |
2221 | case BFD_RELOC_PPC64_TPREL16_HIGHESTA: r = R_PPC64_TPREL16_HIGHESTA; | |
2222 | break; | |
2223 | case BFD_RELOC_PPC64_DTPREL16_DS: r = R_PPC64_DTPREL16_DS; | |
2224 | break; | |
2225 | case BFD_RELOC_PPC64_DTPREL16_LO_DS: r = R_PPC64_DTPREL16_LO_DS; | |
2226 | break; | |
2227 | case BFD_RELOC_PPC64_DTPREL16_HIGHER: r = R_PPC64_DTPREL16_HIGHER; | |
2228 | break; | |
2229 | case BFD_RELOC_PPC64_DTPREL16_HIGHERA: r = R_PPC64_DTPREL16_HIGHERA; | |
2230 | break; | |
2231 | case BFD_RELOC_PPC64_DTPREL16_HIGHEST: r = R_PPC64_DTPREL16_HIGHEST; | |
2232 | break; | |
2233 | case BFD_RELOC_PPC64_DTPREL16_HIGHESTA: r = R_PPC64_DTPREL16_HIGHESTA; | |
2234 | break; | |
25f23106 AM |
2235 | case BFD_RELOC_16_PCREL: r = R_PPC64_REL16; |
2236 | break; | |
2237 | case BFD_RELOC_LO16_PCREL: r = R_PPC64_REL16_LO; | |
2238 | break; | |
2239 | case BFD_RELOC_HI16_PCREL: r = R_PPC64_REL16_HI; | |
2240 | break; | |
2241 | case BFD_RELOC_HI16_S_PCREL: r = R_PPC64_REL16_HA; | |
2242 | break; | |
411e1bfb AM |
2243 | case BFD_RELOC_VTABLE_INHERIT: r = R_PPC64_GNU_VTINHERIT; |
2244 | break; | |
2245 | case BFD_RELOC_VTABLE_ENTRY: r = R_PPC64_GNU_VTENTRY; | |
5bd4f169 AM |
2246 | break; |
2247 | } | |
2248 | ||
4ce794b7 | 2249 | return ppc64_elf_howto_table[r]; |
5bd4f169 AM |
2250 | }; |
2251 | ||
157090f7 AM |
2252 | static reloc_howto_type * |
2253 | ppc64_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, | |
2254 | const char *r_name) | |
2255 | { | |
2256 | unsigned int i; | |
2257 | ||
2258 | for (i = 0; | |
2259 | i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]); | |
2260 | i++) | |
2261 | if (ppc64_elf_howto_raw[i].name != NULL | |
2262 | && strcasecmp (ppc64_elf_howto_raw[i].name, r_name) == 0) | |
2263 | return &ppc64_elf_howto_raw[i]; | |
2264 | ||
2265 | return NULL; | |
2266 | } | |
2267 | ||
5bd4f169 AM |
2268 | /* Set the howto pointer for a PowerPC ELF reloc. */ |
2269 | ||
2270 | static void | |
4ce794b7 AM |
2271 | ppc64_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr, |
2272 | Elf_Internal_Rela *dst) | |
5bd4f169 | 2273 | { |
65f38f15 AM |
2274 | unsigned int type; |
2275 | ||
ef60b7ff | 2276 | /* Initialize howto table if needed. */ |
5bd4f169 | 2277 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) |
5bd4f169 AM |
2278 | ppc_howto_init (); |
2279 | ||
65f38f15 | 2280 | type = ELF64_R_TYPE (dst->r_info); |
d0fb9a8d JJ |
2281 | if (type >= (sizeof (ppc64_elf_howto_table) |
2282 | / sizeof (ppc64_elf_howto_table[0]))) | |
2283 | { | |
2284 | (*_bfd_error_handler) (_("%B: invalid relocation type %d"), | |
3ec2b351 NC |
2285 | abfd, (int) type); |
2286 | type = R_PPC64_NONE; | |
d0fb9a8d | 2287 | } |
65f38f15 | 2288 | cache_ptr->howto = ppc64_elf_howto_table[type]; |
5bd4f169 AM |
2289 | } |
2290 | ||
04c9666a | 2291 | /* Handle the R_PPC64_ADDR16_HA and similar relocs. */ |
5bd4f169 AM |
2292 | |
2293 | static bfd_reloc_status_type | |
4ce794b7 AM |
2294 | ppc64_elf_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2295 | void *data, asection *input_section, | |
2296 | bfd *output_bfd, char **error_message) | |
5bd4f169 | 2297 | { |
805fc799 AM |
2298 | /* If this is a relocatable link (output_bfd test tells us), just |
2299 | call the generic function. Any adjustment will be done at final | |
2300 | link time. */ | |
2301 | if (output_bfd != NULL) | |
cedb70c5 | 2302 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2303 | input_section, output_bfd, error_message); |
2304 | ||
2305 | /* Adjust the addend for sign extension of the low 16 bits. | |
2306 | We won't actually be using the low 16 bits, so trashing them | |
2307 | doesn't matter. */ | |
2308 | reloc_entry->addend += 0x8000; | |
2309 | return bfd_reloc_continue; | |
2310 | } | |
5bd4f169 | 2311 | |
2441e016 AM |
2312 | static bfd_reloc_status_type |
2313 | ppc64_elf_branch_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, | |
2314 | void *data, asection *input_section, | |
2315 | bfd *output_bfd, char **error_message) | |
2316 | { | |
2317 | if (output_bfd != NULL) | |
2318 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, | |
2319 | input_section, output_bfd, error_message); | |
2320 | ||
699733f6 AM |
2321 | if (strcmp (symbol->section->name, ".opd") == 0 |
2322 | && (symbol->section->owner->flags & DYNAMIC) == 0) | |
2441e016 AM |
2323 | { |
2324 | bfd_vma dest = opd_entry_value (symbol->section, | |
2325 | symbol->value + reloc_entry->addend, | |
2326 | NULL, NULL); | |
2327 | if (dest != (bfd_vma) -1) | |
2328 | reloc_entry->addend = dest - (symbol->value | |
2329 | + symbol->section->output_section->vma | |
2330 | + symbol->section->output_offset); | |
2331 | } | |
2332 | return bfd_reloc_continue; | |
2333 | } | |
2334 | ||
805fc799 | 2335 | static bfd_reloc_status_type |
4ce794b7 AM |
2336 | ppc64_elf_brtaken_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2337 | void *data, asection *input_section, | |
2338 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2339 | { |
2340 | long insn; | |
04c9666a | 2341 | enum elf_ppc64_reloc_type r_type; |
805fc799 AM |
2342 | bfd_size_type octets; |
2343 | /* Disabled until we sort out how ld should choose 'y' vs 'at'. */ | |
b34976b6 | 2344 | bfd_boolean is_power4 = FALSE; |
805fc799 AM |
2345 | |
2346 | /* If this is a relocatable link (output_bfd test tells us), just | |
2347 | call the generic function. Any adjustment will be done at final | |
2348 | link time. */ | |
5bd4f169 | 2349 | if (output_bfd != NULL) |
cedb70c5 | 2350 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2351 | input_section, output_bfd, error_message); |
2352 | ||
2353 | octets = reloc_entry->address * bfd_octets_per_byte (abfd); | |
2354 | insn = bfd_get_32 (abfd, (bfd_byte *) data + octets); | |
2355 | insn &= ~(0x01 << 21); | |
4ce794b7 | 2356 | r_type = reloc_entry->howto->type; |
805fc799 AM |
2357 | if (r_type == R_PPC64_ADDR14_BRTAKEN |
2358 | || r_type == R_PPC64_REL14_BRTAKEN) | |
cedb70c5 | 2359 | insn |= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */ |
805fc799 AM |
2360 | |
2361 | if (is_power4) | |
5bd4f169 | 2362 | { |
805fc799 AM |
2363 | /* Set 'a' bit. This is 0b00010 in BO field for branch |
2364 | on CR(BI) insns (BO == 001at or 011at), and 0b01000 | |
2365 | for branch on CTR insns (BO == 1a00t or 1a01t). */ | |
2366 | if ((insn & (0x14 << 21)) == (0x04 << 21)) | |
2367 | insn |= 0x02 << 21; | |
2368 | else if ((insn & (0x14 << 21)) == (0x10 << 21)) | |
2369 | insn |= 0x08 << 21; | |
2370 | else | |
2441e016 | 2371 | goto out; |
5bd4f169 | 2372 | } |
805fc799 AM |
2373 | else |
2374 | { | |
2375 | bfd_vma target = 0; | |
2376 | bfd_vma from; | |
5bd4f169 | 2377 | |
805fc799 AM |
2378 | if (!bfd_is_com_section (symbol->section)) |
2379 | target = symbol->value; | |
2380 | target += symbol->section->output_section->vma; | |
2381 | target += symbol->section->output_offset; | |
2382 | target += reloc_entry->addend; | |
5bd4f169 | 2383 | |
805fc799 AM |
2384 | from = (reloc_entry->address |
2385 | + input_section->output_offset | |
2386 | + input_section->output_section->vma); | |
5bd4f169 | 2387 | |
805fc799 AM |
2388 | /* Invert 'y' bit if not the default. */ |
2389 | if ((bfd_signed_vma) (target - from) < 0) | |
2390 | insn ^= 0x01 << 21; | |
2391 | } | |
4ce794b7 | 2392 | bfd_put_32 (abfd, insn, (bfd_byte *) data + octets); |
2441e016 AM |
2393 | out: |
2394 | return ppc64_elf_branch_reloc (abfd, reloc_entry, symbol, data, | |
2395 | input_section, output_bfd, error_message); | |
805fc799 | 2396 | } |
5bd4f169 | 2397 | |
805fc799 | 2398 | static bfd_reloc_status_type |
4ce794b7 AM |
2399 | ppc64_elf_sectoff_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2400 | void *data, asection *input_section, | |
2401 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2402 | { |
2403 | /* If this is a relocatable link (output_bfd test tells us), just | |
2404 | call the generic function. Any adjustment will be done at final | |
2405 | link time. */ | |
2406 | if (output_bfd != NULL) | |
cedb70c5 | 2407 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 | 2408 | input_section, output_bfd, error_message); |
5bd4f169 | 2409 | |
805fc799 AM |
2410 | /* Subtract the symbol section base address. */ |
2411 | reloc_entry->addend -= symbol->section->output_section->vma; | |
5bd4f169 AM |
2412 | return bfd_reloc_continue; |
2413 | } | |
2414 | ||
805fc799 | 2415 | static bfd_reloc_status_type |
4ce794b7 AM |
2416 | ppc64_elf_sectoff_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2417 | void *data, asection *input_section, | |
2418 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2419 | { |
2420 | /* If this is a relocatable link (output_bfd test tells us), just | |
2421 | call the generic function. Any adjustment will be done at final | |
2422 | link time. */ | |
2423 | if (output_bfd != NULL) | |
cedb70c5 | 2424 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2425 | input_section, output_bfd, error_message); |
2426 | ||
2427 | /* Subtract the symbol section base address. */ | |
2428 | reloc_entry->addend -= symbol->section->output_section->vma; | |
2429 | ||
2430 | /* Adjust the addend for sign extension of the low 16 bits. */ | |
2431 | reloc_entry->addend += 0x8000; | |
2432 | return bfd_reloc_continue; | |
2433 | } | |
2434 | ||
2435 | static bfd_reloc_status_type | |
4ce794b7 AM |
2436 | ppc64_elf_toc_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2437 | void *data, asection *input_section, | |
2438 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2439 | { |
2440 | bfd_vma TOCstart; | |
2441 | ||
2442 | /* If this is a relocatable link (output_bfd test tells us), just | |
2443 | call the generic function. Any adjustment will be done at final | |
2444 | link time. */ | |
2445 | if (output_bfd != NULL) | |
cedb70c5 | 2446 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2447 | input_section, output_bfd, error_message); |
2448 | ||
2449 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
2450 | if (TOCstart == 0) | |
2451 | TOCstart = ppc64_elf_toc (input_section->output_section->owner); | |
2452 | ||
2453 | /* Subtract the TOC base address. */ | |
2454 | reloc_entry->addend -= TOCstart + TOC_BASE_OFF; | |
2455 | return bfd_reloc_continue; | |
2456 | } | |
2457 | ||
2458 | static bfd_reloc_status_type | |
4ce794b7 AM |
2459 | ppc64_elf_toc_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2460 | void *data, asection *input_section, | |
2461 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2462 | { |
2463 | bfd_vma TOCstart; | |
2464 | ||
2465 | /* If this is a relocatable link (output_bfd test tells us), just | |
2466 | call the generic function. Any adjustment will be done at final | |
2467 | link time. */ | |
2468 | if (output_bfd != NULL) | |
cedb70c5 | 2469 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2470 | input_section, output_bfd, error_message); |
2471 | ||
2472 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
2473 | if (TOCstart == 0) | |
2474 | TOCstart = ppc64_elf_toc (input_section->output_section->owner); | |
2475 | ||
2476 | /* Subtract the TOC base address. */ | |
2477 | reloc_entry->addend -= TOCstart + TOC_BASE_OFF; | |
2478 | ||
2479 | /* Adjust the addend for sign extension of the low 16 bits. */ | |
2480 | reloc_entry->addend += 0x8000; | |
2481 | return bfd_reloc_continue; | |
2482 | } | |
2483 | ||
2484 | static bfd_reloc_status_type | |
4ce794b7 AM |
2485 | ppc64_elf_toc64_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2486 | void *data, asection *input_section, | |
2487 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2488 | { |
2489 | bfd_vma TOCstart; | |
2490 | bfd_size_type octets; | |
2491 | ||
2492 | /* If this is a relocatable link (output_bfd test tells us), just | |
2493 | call the generic function. Any adjustment will be done at final | |
2494 | link time. */ | |
2495 | if (output_bfd != NULL) | |
cedb70c5 | 2496 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2497 | input_section, output_bfd, error_message); |
2498 | ||
2499 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
2500 | if (TOCstart == 0) | |
2501 | TOCstart = ppc64_elf_toc (input_section->output_section->owner); | |
2502 | ||
2503 | octets = reloc_entry->address * bfd_octets_per_byte (abfd); | |
2504 | bfd_put_64 (abfd, TOCstart + TOC_BASE_OFF, (bfd_byte *) data + octets); | |
2505 | return bfd_reloc_ok; | |
2506 | } | |
2507 | ||
2508 | static bfd_reloc_status_type | |
4ce794b7 AM |
2509 | ppc64_elf_unhandled_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2510 | void *data, asection *input_section, | |
2511 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2512 | { |
2513 | /* If this is a relocatable link (output_bfd test tells us), just | |
2514 | call the generic function. Any adjustment will be done at final | |
2515 | link time. */ | |
2516 | if (output_bfd != NULL) | |
cedb70c5 | 2517 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2518 | input_section, output_bfd, error_message); |
2519 | ||
2520 | if (error_message != NULL) | |
2521 | { | |
2522 | static char buf[60]; | |
2523 | sprintf (buf, "generic linker can't handle %s", | |
2524 | reloc_entry->howto->name); | |
2525 | *error_message = buf; | |
2526 | } | |
2527 | return bfd_reloc_dangerous; | |
2528 | } | |
2529 | ||
927be08e AM |
2530 | /* Track GOT entries needed for a given symbol. We might need more |
2531 | than one got entry per symbol. */ | |
2532 | struct got_entry | |
2533 | { | |
2534 | struct got_entry *next; | |
2535 | ||
2536 | /* The symbol addend that we'll be placing in the GOT. */ | |
2537 | bfd_vma addend; | |
2538 | ||
2539 | /* Unlike other ELF targets, we use separate GOT entries for the same | |
2540 | symbol referenced from different input files. This is to support | |
2541 | automatic multiple TOC/GOT sections, where the TOC base can vary | |
2542 | from one input file to another. After partitioning into TOC groups | |
2543 | we merge entries within the group. | |
2544 | ||
2545 | Point to the BFD owning this GOT entry. */ | |
2546 | bfd *owner; | |
2547 | ||
2548 | /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD, | |
2549 | TLS_TPREL or TLS_DTPREL for tls entries. */ | |
f961d9dd | 2550 | unsigned char tls_type; |
927be08e AM |
2551 | |
2552 | /* Non-zero if got.ent points to real entry. */ | |
f961d9dd | 2553 | unsigned char is_indirect; |
927be08e AM |
2554 | |
2555 | /* Reference count until size_dynamic_sections, GOT offset thereafter. */ | |
2556 | union | |
2557 | { | |
2558 | bfd_signed_vma refcount; | |
2559 | bfd_vma offset; | |
2560 | struct got_entry *ent; | |
2561 | } got; | |
2562 | }; | |
2563 | ||
2564 | /* The same for PLT. */ | |
2565 | struct plt_entry | |
2566 | { | |
2567 | struct plt_entry *next; | |
2568 | ||
2569 | bfd_vma addend; | |
2570 | ||
2571 | union | |
2572 | { | |
2573 | bfd_signed_vma refcount; | |
2574 | bfd_vma offset; | |
2575 | } plt; | |
2576 | }; | |
2577 | ||
e717da7e AM |
2578 | struct ppc64_elf_obj_tdata |
2579 | { | |
2580 | struct elf_obj_tdata elf; | |
2581 | ||
2582 | /* Shortcuts to dynamic linker sections. */ | |
2583 | asection *got; | |
2584 | asection *relgot; | |
2585 | ||
b3fac117 AM |
2586 | /* Used during garbage collection. We attach global symbols defined |
2587 | on removed .opd entries to this section so that the sym is removed. */ | |
2588 | asection *deleted_section; | |
81688140 | 2589 | |
927be08e | 2590 | /* TLS local dynamic got entry handling. Support for multiple GOT |
e717da7e | 2591 | sections means we potentially need one of these for each input bfd. */ |
927be08e | 2592 | struct got_entry tlsld_got; |
8860955f AM |
2593 | |
2594 | /* A copy of relocs before they are modified for --emit-relocs. */ | |
2595 | Elf_Internal_Rela *opd_relocs; | |
d77c8a4b AM |
2596 | |
2597 | /* Nonzero if this bfd has small toc/got relocs, ie. that expect | |
2598 | the reloc to be in the range -32768 to 32767. */ | |
2599 | unsigned int has_small_toc_reloc; | |
e717da7e AM |
2600 | }; |
2601 | ||
2602 | #define ppc64_elf_tdata(bfd) \ | |
2603 | ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any) | |
2604 | ||
2605 | #define ppc64_tlsld_got(bfd) \ | |
2606 | (&ppc64_elf_tdata (bfd)->tlsld_got) | |
2607 | ||
0c8d6e5c AM |
2608 | #define is_ppc64_elf(bfd) \ |
2609 | (bfd_get_flavour (bfd) == bfd_target_elf_flavour \ | |
4dfe6ac6 | 2610 | && elf_object_id (bfd) == PPC64_ELF_DATA) |
0c8d6e5c | 2611 | |
e717da7e AM |
2612 | /* Override the generic function because we store some extras. */ |
2613 | ||
2614 | static bfd_boolean | |
2615 | ppc64_elf_mkobject (bfd *abfd) | |
2616 | { | |
0ffa91dd | 2617 | return bfd_elf_allocate_object (abfd, sizeof (struct ppc64_elf_obj_tdata), |
4dfe6ac6 | 2618 | PPC64_ELF_DATA); |
e717da7e AM |
2619 | } |
2620 | ||
feee612b AM |
2621 | /* Fix bad default arch selected for a 64 bit input bfd when the |
2622 | default is 32 bit. */ | |
2623 | ||
b34976b6 | 2624 | static bfd_boolean |
4ce794b7 | 2625 | ppc64_elf_object_p (bfd *abfd) |
feee612b AM |
2626 | { |
2627 | if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 32) | |
2628 | { | |
2629 | Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd); | |
2630 | ||
2631 | if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS64) | |
2632 | { | |
2633 | /* Relies on arch after 32 bit default being 64 bit default. */ | |
2634 | abfd->arch_info = abfd->arch_info->next; | |
2635 | BFD_ASSERT (abfd->arch_info->bits_per_word == 64); | |
2636 | } | |
2637 | } | |
b34976b6 | 2638 | return TRUE; |
feee612b AM |
2639 | } |
2640 | ||
d37c89e5 AM |
2641 | /* Support for core dump NOTE sections. */ |
2642 | ||
2643 | static bfd_boolean | |
2644 | ppc64_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) | |
2645 | { | |
eea6121a | 2646 | size_t offset, size; |
d37c89e5 AM |
2647 | |
2648 | if (note->descsz != 504) | |
2649 | return FALSE; | |
2650 | ||
2651 | /* pr_cursig */ | |
2652 | elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12); | |
2653 | ||
2654 | /* pr_pid */ | |
261b8d08 | 2655 | elf_tdata (abfd)->core_lwpid = bfd_get_32 (abfd, note->descdata + 32); |
d37c89e5 AM |
2656 | |
2657 | /* pr_reg */ | |
2658 | offset = 112; | |
eea6121a | 2659 | size = 384; |
d37c89e5 AM |
2660 | |
2661 | /* Make a ".reg/999" section. */ | |
2662 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", | |
eea6121a | 2663 | size, note->descpos + offset); |
d37c89e5 AM |
2664 | } |
2665 | ||
2666 | static bfd_boolean | |
2667 | ppc64_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) | |
2668 | { | |
2669 | if (note->descsz != 136) | |
2670 | return FALSE; | |
2671 | ||
2672 | elf_tdata (abfd)->core_program | |
2673 | = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16); | |
2674 | elf_tdata (abfd)->core_command | |
2675 | = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80); | |
2676 | ||
2677 | return TRUE; | |
2678 | } | |
2679 | ||
183e98be AM |
2680 | static char * |
2681 | ppc64_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type, | |
2682 | ...) | |
2683 | { | |
2684 | switch (note_type) | |
2685 | { | |
2686 | default: | |
2687 | return NULL; | |
2688 | ||
2689 | case NT_PRPSINFO: | |
2690 | { | |
2691 | char data[136]; | |
2692 | va_list ap; | |
2693 | ||
2694 | va_start (ap, note_type); | |
2695 | memset (data, 0, 40); | |
2696 | strncpy (data + 40, va_arg (ap, const char *), 16); | |
2697 | strncpy (data + 56, va_arg (ap, const char *), 80); | |
2698 | va_end (ap); | |
2699 | return elfcore_write_note (abfd, buf, bufsiz, | |
2700 | "CORE", note_type, data, sizeof (data)); | |
2701 | } | |
2702 | ||
2703 | case NT_PRSTATUS: | |
2704 | { | |
2705 | char data[504]; | |
2706 | va_list ap; | |
2707 | long pid; | |
2708 | int cursig; | |
2709 | const void *greg; | |
2710 | ||
2711 | va_start (ap, note_type); | |
2712 | memset (data, 0, 112); | |
2713 | pid = va_arg (ap, long); | |
2714 | bfd_put_32 (abfd, pid, data + 32); | |
2715 | cursig = va_arg (ap, int); | |
2716 | bfd_put_16 (abfd, cursig, data + 12); | |
2717 | greg = va_arg (ap, const void *); | |
2718 | memcpy (data + 112, greg, 384); | |
2719 | memset (data + 496, 0, 8); | |
2720 | va_end (ap); | |
2721 | return elfcore_write_note (abfd, buf, bufsiz, | |
2722 | "CORE", note_type, data, sizeof (data)); | |
2723 | } | |
2724 | } | |
2725 | } | |
2726 | ||
5bd4f169 AM |
2727 | /* Merge backend specific data from an object file to the output |
2728 | object file when linking. */ | |
2f6d9989 | 2729 | |
b34976b6 | 2730 | static bfd_boolean |
4ce794b7 | 2731 | ppc64_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd) |
5bd4f169 | 2732 | { |
5bd4f169 AM |
2733 | /* Check if we have the same endianess. */ |
2734 | if (ibfd->xvec->byteorder != obfd->xvec->byteorder | |
87e226ce | 2735 | && ibfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN |
5bd4f169 AM |
2736 | && obfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN) |
2737 | { | |
2738 | const char *msg; | |
2739 | ||
2740 | if (bfd_big_endian (ibfd)) | |
d003868e | 2741 | msg = _("%B: compiled for a big endian system " |
4ce794b7 | 2742 | "and target is little endian"); |
5bd4f169 | 2743 | else |
d003868e | 2744 | msg = _("%B: compiled for a little endian system " |
4ce794b7 | 2745 | "and target is big endian"); |
5bd4f169 | 2746 | |
d003868e | 2747 | (*_bfd_error_handler) (msg, ibfd); |
5bd4f169 AM |
2748 | |
2749 | bfd_set_error (bfd_error_wrong_format); | |
b34976b6 | 2750 | return FALSE; |
5bd4f169 AM |
2751 | } |
2752 | ||
b34976b6 | 2753 | return TRUE; |
5bd4f169 | 2754 | } |
f0abc2a1 | 2755 | |
5d35169e AM |
2756 | /* Add extra PPC sections. */ |
2757 | ||
b35d266b | 2758 | static const struct bfd_elf_special_section ppc64_elf_special_sections[]= |
7f4d3958 | 2759 | { |
0112cd26 NC |
2760 | { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, 0 }, |
2761 | { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, | |
2762 | { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
2763 | { STRING_COMMA_LEN (".toc"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
2764 | { STRING_COMMA_LEN (".toc1"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
2765 | { STRING_COMMA_LEN (".tocbss"), 0, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, | |
2766 | { NULL, 0, 0, 0, 0 } | |
5d35169e AM |
2767 | }; |
2768 | ||
7c8fe5c4 AM |
2769 | enum _ppc64_sec_type { |
2770 | sec_normal = 0, | |
2771 | sec_opd = 1, | |
2772 | sec_toc = 2 | |
2773 | }; | |
2774 | ||
f0abc2a1 AM |
2775 | struct _ppc64_elf_section_data |
2776 | { | |
2777 | struct bfd_elf_section_data elf; | |
411e1bfb | 2778 | |
f0abc2a1 AM |
2779 | union |
2780 | { | |
74f0fb50 AM |
2781 | /* An array with one entry for each opd function descriptor. */ |
2782 | struct _opd_sec_data | |
2783 | { | |
2784 | /* Points to the function code section for local opd entries. */ | |
2785 | asection **func_sec; | |
2786 | ||
2787 | /* After editing .opd, adjust references to opd local syms. */ | |
2788 | long *adjust; | |
2789 | } opd; | |
7c8fe5c4 | 2790 | |
3a71aa26 AM |
2791 | /* An array for toc sections, indexed by offset/8. */ |
2792 | struct _toc_sec_data | |
2793 | { | |
2794 | /* Specifies the relocation symbol index used at a given toc offset. */ | |
2795 | unsigned *symndx; | |
2796 | ||
2797 | /* And the relocation addend. */ | |
2798 | bfd_vma *add; | |
2799 | } toc; | |
7c8fe5c4 AM |
2800 | } u; |
2801 | ||
2802 | enum _ppc64_sec_type sec_type:2; | |
411e1bfb | 2803 | |
7c8fe5c4 AM |
2804 | /* Flag set when small branches are detected. Used to |
2805 | select suitable defaults for the stub group size. */ | |
2806 | unsigned int has_14bit_branch:1; | |
f0abc2a1 AM |
2807 | }; |
2808 | ||
2809 | #define ppc64_elf_section_data(sec) \ | |
411e1bfb | 2810 | ((struct _ppc64_elf_section_data *) elf_section_data (sec)) |
f0abc2a1 AM |
2811 | |
2812 | static bfd_boolean | |
4ce794b7 | 2813 | ppc64_elf_new_section_hook (bfd *abfd, asection *sec) |
f0abc2a1 | 2814 | { |
f592407e AM |
2815 | if (!sec->used_by_bfd) |
2816 | { | |
2817 | struct _ppc64_elf_section_data *sdata; | |
2818 | bfd_size_type amt = sizeof (*sdata); | |
f0abc2a1 | 2819 | |
f592407e AM |
2820 | sdata = bfd_zalloc (abfd, amt); |
2821 | if (sdata == NULL) | |
2822 | return FALSE; | |
2823 | sec->used_by_bfd = sdata; | |
2824 | } | |
f0abc2a1 AM |
2825 | |
2826 | return _bfd_elf_new_section_hook (abfd, sec); | |
2827 | } | |
4025353c | 2828 | |
74f0fb50 | 2829 | static struct _opd_sec_data * |
4025353c AM |
2830 | get_opd_info (asection * sec) |
2831 | { | |
2832 | if (sec != NULL | |
2833 | && ppc64_elf_section_data (sec) != NULL | |
7c8fe5c4 | 2834 | && ppc64_elf_section_data (sec)->sec_type == sec_opd) |
74f0fb50 | 2835 | return &ppc64_elf_section_data (sec)->u.opd; |
4025353c AM |
2836 | return NULL; |
2837 | } | |
90e3cdf2 JJ |
2838 | \f |
2839 | /* Parameters for the qsort hook. */ | |
90e3cdf2 JJ |
2840 | static bfd_boolean synthetic_relocatable; |
2841 | ||
699733f6 | 2842 | /* qsort comparison function for ppc64_elf_get_synthetic_symtab. */ |
90e3cdf2 JJ |
2843 | |
2844 | static int | |
2845 | compare_symbols (const void *ap, const void *bp) | |
2846 | { | |
2847 | const asymbol *a = * (const asymbol **) ap; | |
2848 | const asymbol *b = * (const asymbol **) bp; | |
2849 | ||
699733f6 AM |
2850 | /* Section symbols first. */ |
2851 | if ((a->flags & BSF_SECTION_SYM) && !(b->flags & BSF_SECTION_SYM)) | |
90e3cdf2 | 2852 | return -1; |
699733f6 | 2853 | if (!(a->flags & BSF_SECTION_SYM) && (b->flags & BSF_SECTION_SYM)) |
90e3cdf2 JJ |
2854 | return 1; |
2855 | ||
699733f6 | 2856 | /* then .opd symbols. */ |
ffcfec52 AM |
2857 | if (strcmp (a->section->name, ".opd") == 0 |
2858 | && strcmp (b->section->name, ".opd") != 0) | |
90e3cdf2 | 2859 | return -1; |
ffcfec52 AM |
2860 | if (strcmp (a->section->name, ".opd") != 0 |
2861 | && strcmp (b->section->name, ".opd") == 0) | |
90e3cdf2 JJ |
2862 | return 1; |
2863 | ||
699733f6 | 2864 | /* then other code symbols. */ |
90e3cdf2 JJ |
2865 | if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) |
2866 | == (SEC_CODE | SEC_ALLOC) | |
2867 | && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
2868 | != (SEC_CODE | SEC_ALLOC)) | |
2869 | return -1; | |
2870 | ||
2871 | if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
2872 | != (SEC_CODE | SEC_ALLOC) | |
2873 | && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
2874 | == (SEC_CODE | SEC_ALLOC)) | |
2875 | return 1; | |
2876 | ||
2877 | if (synthetic_relocatable) | |
2878 | { | |
2879 | if (a->section->id < b->section->id) | |
2880 | return -1; | |
2881 | ||
2882 | if (a->section->id > b->section->id) | |
2883 | return 1; | |
2884 | } | |
2885 | ||
2886 | if (a->value + a->section->vma < b->value + b->section->vma) | |
2887 | return -1; | |
2888 | ||
2889 | if (a->value + a->section->vma > b->value + b->section->vma) | |
2890 | return 1; | |
2891 | ||
4d35a0aa AM |
2892 | /* For syms with the same value, prefer strong dynamic global function |
2893 | syms over other syms. */ | |
2894 | if ((a->flags & BSF_GLOBAL) != 0 && (b->flags & BSF_GLOBAL) == 0) | |
2895 | return -1; | |
2896 | ||
2897 | if ((a->flags & BSF_GLOBAL) == 0 && (b->flags & BSF_GLOBAL) != 0) | |
2898 | return 1; | |
2899 | ||
2900 | if ((a->flags & BSF_FUNCTION) != 0 && (b->flags & BSF_FUNCTION) == 0) | |
2901 | return -1; | |
2902 | ||
2903 | if ((a->flags & BSF_FUNCTION) == 0 && (b->flags & BSF_FUNCTION) != 0) | |
2904 | return 1; | |
2905 | ||
2906 | if ((a->flags & BSF_WEAK) == 0 && (b->flags & BSF_WEAK) != 0) | |
2907 | return -1; | |
2908 | ||
2909 | if ((a->flags & BSF_WEAK) != 0 && (b->flags & BSF_WEAK) == 0) | |
2910 | return 1; | |
2911 | ||
2912 | if ((a->flags & BSF_DYNAMIC) != 0 && (b->flags & BSF_DYNAMIC) == 0) | |
2913 | return -1; | |
2914 | ||
2915 | if ((a->flags & BSF_DYNAMIC) == 0 && (b->flags & BSF_DYNAMIC) != 0) | |
2916 | return 1; | |
2917 | ||
90e3cdf2 JJ |
2918 | return 0; |
2919 | } | |
2920 | ||
699733f6 | 2921 | /* Search SYMS for a symbol of the given VALUE. */ |
90e3cdf2 | 2922 | |
699733f6 AM |
2923 | static asymbol * |
2924 | sym_exists_at (asymbol **syms, long lo, long hi, int id, bfd_vma value) | |
90e3cdf2 | 2925 | { |
699733f6 | 2926 | long mid; |
90e3cdf2 | 2927 | |
699733f6 AM |
2928 | if (id == -1) |
2929 | { | |
2930 | while (lo < hi) | |
2931 | { | |
2932 | mid = (lo + hi) >> 1; | |
2933 | if (syms[mid]->value + syms[mid]->section->vma < value) | |
2934 | lo = mid + 1; | |
2935 | else if (syms[mid]->value + syms[mid]->section->vma > value) | |
2936 | hi = mid; | |
2937 | else | |
2938 | return syms[mid]; | |
2939 | } | |
2940 | } | |
2941 | else | |
2942 | { | |
2943 | while (lo < hi) | |
2944 | { | |
2945 | mid = (lo + hi) >> 1; | |
2946 | if (syms[mid]->section->id < id) | |
2947 | lo = mid + 1; | |
2948 | else if (syms[mid]->section->id > id) | |
2949 | hi = mid; | |
2950 | else if (syms[mid]->value < value) | |
2951 | lo = mid + 1; | |
2952 | else if (syms[mid]->value > value) | |
2953 | hi = mid; | |
2954 | else | |
2955 | return syms[mid]; | |
2956 | } | |
2957 | } | |
2958 | return NULL; | |
90e3cdf2 JJ |
2959 | } |
2960 | ||
468392fb AM |
2961 | static bfd_boolean |
2962 | section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr) | |
2963 | { | |
2964 | bfd_vma vma = *(bfd_vma *) ptr; | |
2965 | return ((section->flags & SEC_ALLOC) != 0 | |
2966 | && section->vma <= vma | |
2967 | && vma < section->vma + section->size); | |
2968 | } | |
2969 | ||
699733f6 | 2970 | /* Create synthetic symbols, effectively restoring "dot-symbol" function |
468392fb | 2971 | entry syms. Also generate @plt symbols for the glink branch table. */ |
90e3cdf2 JJ |
2972 | |
2973 | static long | |
a7535cf3 AM |
2974 | ppc64_elf_get_synthetic_symtab (bfd *abfd, |
2975 | long static_count, asymbol **static_syms, | |
2976 | long dyn_count, asymbol **dyn_syms, | |
c9727e01 | 2977 | asymbol **ret) |
90e3cdf2 JJ |
2978 | { |
2979 | asymbol *s; | |
699733f6 AM |
2980 | long i; |
2981 | long count; | |
90e3cdf2 | 2982 | char *names; |
a7535cf3 | 2983 | long symcount, codesecsym, codesecsymend, secsymend, opdsymend; |
699733f6 | 2984 | asection *opd; |
90e3cdf2 | 2985 | bfd_boolean relocatable = (abfd->flags & (EXEC_P | DYNAMIC)) == 0; |
a7535cf3 | 2986 | asymbol **syms; |
90e3cdf2 JJ |
2987 | |
2988 | *ret = NULL; | |
2989 | ||
2990 | opd = bfd_get_section_by_name (abfd, ".opd"); | |
2991 | if (opd == NULL) | |
2992 | return 0; | |
2993 | ||
a7535cf3 | 2994 | symcount = static_count; |
c9727e01 | 2995 | if (!relocatable) |
a7535cf3 | 2996 | symcount += dyn_count; |
90e3cdf2 | 2997 | if (symcount == 0) |
c9727e01 | 2998 | return 0; |
90e3cdf2 | 2999 | |
a7535cf3 AM |
3000 | syms = bfd_malloc ((symcount + 1) * sizeof (*syms)); |
3001 | if (syms == NULL) | |
7356fed5 | 3002 | return -1; |
a7535cf3 AM |
3003 | |
3004 | if (!relocatable && static_count != 0 && dyn_count != 0) | |
3005 | { | |
3006 | /* Use both symbol tables. */ | |
3007 | memcpy (syms, static_syms, static_count * sizeof (*syms)); | |
3008 | memcpy (syms + static_count, dyn_syms, (dyn_count + 1) * sizeof (*syms)); | |
3009 | } | |
3010 | else if (!relocatable && static_count == 0) | |
3011 | memcpy (syms, dyn_syms, (symcount + 1) * sizeof (*syms)); | |
3012 | else | |
3013 | memcpy (syms, static_syms, (symcount + 1) * sizeof (*syms)); | |
3014 | ||
90e3cdf2 | 3015 | synthetic_relocatable = relocatable; |
595da8c5 | 3016 | qsort (syms, symcount, sizeof (*syms), compare_symbols); |
90e3cdf2 | 3017 | |
c9727e01 AM |
3018 | if (!relocatable && symcount > 1) |
3019 | { | |
3020 | long j; | |
3021 | /* Trim duplicate syms, since we may have merged the normal and | |
3022 | dynamic symbols. Actually, we only care about syms that have | |
3b36f7e6 | 3023 | different values, so trim any with the same value. */ |
c9727e01 AM |
3024 | for (i = 1, j = 1; i < symcount; ++i) |
3025 | if (syms[i - 1]->value + syms[i - 1]->section->vma | |
3026 | != syms[i]->value + syms[i]->section->vma) | |
3027 | syms[j++] = syms[i]; | |
3028 | symcount = j; | |
3029 | } | |
3030 | ||
699733f6 | 3031 | i = 0; |
ffcfec52 | 3032 | if (strcmp (syms[i]->section->name, ".opd") == 0) |
699733f6 AM |
3033 | ++i; |
3034 | codesecsym = i; | |
90e3cdf2 | 3035 | |
699733f6 AM |
3036 | for (; i < symcount; ++i) |
3037 | if (((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
3038 | != (SEC_CODE | SEC_ALLOC)) | |
3039 | || (syms[i]->flags & BSF_SECTION_SYM) == 0) | |
3040 | break; | |
3041 | codesecsymend = i; | |
90e3cdf2 | 3042 | |
699733f6 AM |
3043 | for (; i < symcount; ++i) |
3044 | if ((syms[i]->flags & BSF_SECTION_SYM) == 0) | |
3045 | break; | |
3046 | secsymend = i; | |
90e3cdf2 | 3047 | |
699733f6 | 3048 | for (; i < symcount; ++i) |
ffcfec52 | 3049 | if (strcmp (syms[i]->section->name, ".opd") != 0) |
699733f6 AM |
3050 | break; |
3051 | opdsymend = i; | |
90e3cdf2 | 3052 | |
699733f6 AM |
3053 | for (; i < symcount; ++i) |
3054 | if ((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
3055 | != (SEC_CODE | SEC_ALLOC)) | |
3056 | break; | |
3057 | symcount = i; | |
3058 | ||
c9727e01 | 3059 | count = 0; |
90e3cdf2 | 3060 | |
699733f6 | 3061 | if (relocatable) |
90e3cdf2 | 3062 | { |
699733f6 AM |
3063 | bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean); |
3064 | arelent *r; | |
3065 | size_t size; | |
3066 | long relcount; | |
90e3cdf2 | 3067 | |
468392fb AM |
3068 | if (opdsymend == secsymend) |
3069 | goto done; | |
3070 | ||
699733f6 | 3071 | slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; |
90e3cdf2 | 3072 | relcount = (opd->flags & SEC_RELOC) ? opd->reloc_count : 0; |
7356fed5 | 3073 | if (relcount == 0) |
c9727e01 | 3074 | goto done; |
90e3cdf2 | 3075 | |
7356fed5 AM |
3076 | if (!(*slurp_relocs) (abfd, opd, static_syms, FALSE)) |
3077 | { | |
3078 | count = -1; | |
3079 | goto done; | |
3080 | } | |
3081 | ||
699733f6 | 3082 | size = 0; |
595da8c5 | 3083 | for (i = secsymend, r = opd->relocation; i < opdsymend; ++i) |
699733f6 AM |
3084 | { |
3085 | asymbol *sym; | |
90e3cdf2 | 3086 | |
595da8c5 | 3087 | while (r < opd->relocation + relcount |
699733f6 AM |
3088 | && r->address < syms[i]->value + opd->vma) |
3089 | ++r; | |
90e3cdf2 | 3090 | |
595da8c5 | 3091 | if (r == opd->relocation + relcount) |
699733f6 | 3092 | break; |
90e3cdf2 | 3093 | |
699733f6 AM |
3094 | if (r->address != syms[i]->value + opd->vma) |
3095 | continue; | |
90e3cdf2 | 3096 | |
699733f6 AM |
3097 | if (r->howto->type != R_PPC64_ADDR64) |
3098 | continue; | |
90e3cdf2 | 3099 | |
699733f6 AM |
3100 | sym = *r->sym_ptr_ptr; |
3101 | if (!sym_exists_at (syms, opdsymend, symcount, | |
3102 | sym->section->id, sym->value + r->addend)) | |
3103 | { | |
3104 | ++count; | |
3105 | size += sizeof (asymbol); | |
3106 | size += strlen (syms[i]->name) + 2; | |
3107 | } | |
3108 | } | |
90e3cdf2 | 3109 | |
699733f6 AM |
3110 | s = *ret = bfd_malloc (size); |
3111 | if (s == NULL) | |
3112 | { | |
7356fed5 | 3113 | count = -1; |
c9727e01 | 3114 | goto done; |
699733f6 | 3115 | } |
90e3cdf2 | 3116 | |
699733f6 | 3117 | names = (char *) (s + count); |
90e3cdf2 | 3118 | |
595da8c5 | 3119 | for (i = secsymend, r = opd->relocation; i < opdsymend; ++i) |
90e3cdf2 | 3120 | { |
699733f6 | 3121 | asymbol *sym; |
90e3cdf2 | 3122 | |
595da8c5 | 3123 | while (r < opd->relocation + relcount |
699733f6 AM |
3124 | && r->address < syms[i]->value + opd->vma) |
3125 | ++r; | |
90e3cdf2 | 3126 | |
595da8c5 | 3127 | if (r == opd->relocation + relcount) |
699733f6 AM |
3128 | break; |
3129 | ||
3130 | if (r->address != syms[i]->value + opd->vma) | |
3131 | continue; | |
3132 | ||
3133 | if (r->howto->type != R_PPC64_ADDR64) | |
3134 | continue; | |
90e3cdf2 | 3135 | |
699733f6 AM |
3136 | sym = *r->sym_ptr_ptr; |
3137 | if (!sym_exists_at (syms, opdsymend, symcount, | |
3138 | sym->section->id, sym->value + r->addend)) | |
3139 | { | |
3140 | size_t len; | |
3141 | ||
3142 | *s = *syms[i]; | |
6ba2a415 | 3143 | s->flags |= BSF_SYNTHETIC; |
699733f6 AM |
3144 | s->section = sym->section; |
3145 | s->value = sym->value + r->addend; | |
3146 | s->name = names; | |
3147 | *names++ = '.'; | |
3148 | len = strlen (syms[i]->name); | |
3149 | memcpy (names, syms[i]->name, len + 1); | |
3150 | names += len + 1; | |
6f610d07 UW |
3151 | /* Have udata.p point back to the original symbol this |
3152 | synthetic symbol was derived from. */ | |
3153 | s->udata.p = syms[i]; | |
699733f6 AM |
3154 | s++; |
3155 | } | |
3156 | } | |
3157 | } | |
3158 | else | |
90e3cdf2 | 3159 | { |
468392fb | 3160 | bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean); |
699733f6 AM |
3161 | bfd_byte *contents; |
3162 | size_t size; | |
468392fb AM |
3163 | long plt_count = 0; |
3164 | bfd_vma glink_vma = 0, resolv_vma = 0; | |
3165 | asection *dynamic, *glink = NULL, *relplt = NULL; | |
3166 | arelent *p; | |
90e3cdf2 | 3167 | |
699733f6 AM |
3168 | if (!bfd_malloc_and_get_section (abfd, opd, &contents)) |
3169 | { | |
3170 | if (contents) | |
c9727e01 AM |
3171 | { |
3172 | free_contents_and_exit: | |
3173 | free (contents); | |
3174 | } | |
7356fed5 | 3175 | count = -1; |
c9727e01 | 3176 | goto done; |
699733f6 | 3177 | } |
90e3cdf2 | 3178 | |
699733f6 AM |
3179 | size = 0; |
3180 | for (i = secsymend; i < opdsymend; ++i) | |
3181 | { | |
3182 | bfd_vma ent; | |
90e3cdf2 | 3183 | |
5ef11c02 AM |
3184 | /* Ignore bogus symbols. */ |
3185 | if (syms[i]->value > opd->size - 8) | |
3186 | continue; | |
3187 | ||
699733f6 AM |
3188 | ent = bfd_get_64 (abfd, contents + syms[i]->value); |
3189 | if (!sym_exists_at (syms, opdsymend, symcount, -1, ent)) | |
3190 | { | |
3191 | ++count; | |
3192 | size += sizeof (asymbol); | |
3193 | size += strlen (syms[i]->name) + 2; | |
3194 | } | |
3195 | } | |
90e3cdf2 | 3196 | |
468392fb | 3197 | /* Get start of .glink stubs from DT_PPC64_GLINK. */ |
066ee829 AM |
3198 | if (dyn_count != 0 |
3199 | && (dynamic = bfd_get_section_by_name (abfd, ".dynamic")) != NULL) | |
468392fb AM |
3200 | { |
3201 | bfd_byte *dynbuf, *extdyn, *extdynend; | |
3202 | size_t extdynsize; | |
3203 | void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *); | |
3204 | ||
3205 | if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf)) | |
3206 | goto free_contents_and_exit; | |
3207 | ||
3208 | extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn; | |
3209 | swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in; | |
3210 | ||
3211 | extdyn = dynbuf; | |
3212 | extdynend = extdyn + dynamic->size; | |
3213 | for (; extdyn < extdynend; extdyn += extdynsize) | |
3214 | { | |
3215 | Elf_Internal_Dyn dyn; | |
3216 | (*swap_dyn_in) (abfd, extdyn, &dyn); | |
3217 | ||
3218 | if (dyn.d_tag == DT_NULL) | |
3219 | break; | |
3220 | ||
3221 | if (dyn.d_tag == DT_PPC64_GLINK) | |
3222 | { | |
3223 | /* The first glink stub starts at offset 32; see comment in | |
3224 | ppc64_elf_finish_dynamic_sections. */ | |
3225 | glink_vma = dyn.d_un.d_val + 32; | |
3226 | /* The .glink section usually does not survive the final | |
3227 | link; search for the section (usually .text) where the | |
3228 | glink stubs now reside. */ | |
3229 | glink = bfd_sections_find_if (abfd, section_covers_vma, | |
3230 | &glink_vma); | |
3231 | break; | |
3232 | } | |
3233 | } | |
3234 | ||
3235 | free (dynbuf); | |
3236 | } | |
3237 | ||
3238 | if (glink != NULL) | |
3239 | { | |
3240 | /* Determine __glink trampoline by reading the relative branch | |
3241 | from the first glink stub. */ | |
3242 | bfd_byte buf[4]; | |
3243 | if (bfd_get_section_contents (abfd, glink, buf, | |
3244 | glink_vma + 4 - glink->vma, 4)) | |
3245 | { | |
3246 | unsigned int insn = bfd_get_32 (abfd, buf); | |
3247 | insn ^= B_DOT; | |
3248 | if ((insn & ~0x3fffffc) == 0) | |
3249 | resolv_vma = glink_vma + 4 + (insn ^ 0x2000000) - 0x2000000; | |
3250 | } | |
3251 | ||
3252 | if (resolv_vma) | |
3253 | size += sizeof (asymbol) + sizeof ("__glink_PLTresolve"); | |
468392fb | 3254 | |
066ee829 AM |
3255 | relplt = bfd_get_section_by_name (abfd, ".rela.plt"); |
3256 | if (relplt != NULL) | |
3257 | { | |
3258 | slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; | |
3259 | if (! (*slurp_relocs) (abfd, relplt, dyn_syms, TRUE)) | |
3260 | goto free_contents_and_exit; | |
468392fb | 3261 | |
066ee829 AM |
3262 | plt_count = relplt->size / sizeof (Elf64_External_Rela); |
3263 | size += plt_count * sizeof (asymbol); | |
468392fb | 3264 | |
066ee829 AM |
3265 | p = relplt->relocation; |
3266 | for (i = 0; i < plt_count; i++, p++) | |
e054468f AM |
3267 | { |
3268 | size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt"); | |
3269 | if (p->addend != 0) | |
3270 | size += sizeof ("+0x") - 1 + 16; | |
3271 | } | |
066ee829 | 3272 | } |
468392fb AM |
3273 | } |
3274 | ||
699733f6 AM |
3275 | s = *ret = bfd_malloc (size); |
3276 | if (s == NULL) | |
7356fed5 | 3277 | goto free_contents_and_exit; |
90e3cdf2 | 3278 | |
468392fb | 3279 | names = (char *) (s + count + plt_count + (resolv_vma != 0)); |
90e3cdf2 | 3280 | |
699733f6 | 3281 | for (i = secsymend; i < opdsymend; ++i) |
90e3cdf2 | 3282 | { |
699733f6 | 3283 | bfd_vma ent; |
90e3cdf2 | 3284 | |
5ef11c02 AM |
3285 | if (syms[i]->value > opd->size - 8) |
3286 | continue; | |
3287 | ||
699733f6 AM |
3288 | ent = bfd_get_64 (abfd, contents + syms[i]->value); |
3289 | if (!sym_exists_at (syms, opdsymend, symcount, -1, ent)) | |
90e3cdf2 | 3290 | { |
c9727e01 | 3291 | long lo, hi; |
699733f6 | 3292 | size_t len; |
c9727e01 | 3293 | asection *sec = abfd->sections; |
90e3cdf2 | 3294 | |
699733f6 AM |
3295 | *s = *syms[i]; |
3296 | lo = codesecsym; | |
3297 | hi = codesecsymend; | |
3298 | while (lo < hi) | |
3299 | { | |
c9727e01 | 3300 | long mid = (lo + hi) >> 1; |
699733f6 AM |
3301 | if (syms[mid]->section->vma < ent) |
3302 | lo = mid + 1; | |
3303 | else if (syms[mid]->section->vma > ent) | |
3304 | hi = mid; | |
3305 | else | |
c9727e01 AM |
3306 | { |
3307 | sec = syms[mid]->section; | |
3308 | break; | |
3309 | } | |
699733f6 AM |
3310 | } |
3311 | ||
c9727e01 | 3312 | if (lo >= hi && lo > codesecsym) |
699733f6 | 3313 | sec = syms[lo - 1]->section; |
699733f6 AM |
3314 | |
3315 | for (; sec != NULL; sec = sec->next) | |
3316 | { | |
3317 | if (sec->vma > ent) | |
3318 | break; | |
3319 | if ((sec->flags & SEC_ALLOC) == 0 | |
3320 | || (sec->flags & SEC_LOAD) == 0) | |
3321 | break; | |
3322 | if ((sec->flags & SEC_CODE) != 0) | |
3323 | s->section = sec; | |
3324 | } | |
6ba2a415 | 3325 | s->flags |= BSF_SYNTHETIC; |
699733f6 AM |
3326 | s->value = ent - s->section->vma; |
3327 | s->name = names; | |
3328 | *names++ = '.'; | |
3329 | len = strlen (syms[i]->name); | |
3330 | memcpy (names, syms[i]->name, len + 1); | |
3331 | names += len + 1; | |
6f610d07 UW |
3332 | /* Have udata.p point back to the original symbol this |
3333 | synthetic symbol was derived from. */ | |
3334 | s->udata.p = syms[i]; | |
699733f6 | 3335 | s++; |
90e3cdf2 | 3336 | } |
90e3cdf2 | 3337 | } |
699733f6 | 3338 | free (contents); |
468392fb AM |
3339 | |
3340 | if (glink != NULL && relplt != NULL) | |
3341 | { | |
3342 | if (resolv_vma) | |
3343 | { | |
3344 | /* Add a symbol for the main glink trampoline. */ | |
86a4952b | 3345 | memset (s, 0, sizeof *s); |
468392fb | 3346 | s->the_bfd = abfd; |
6ba2a415 | 3347 | s->flags = BSF_GLOBAL | BSF_SYNTHETIC; |
468392fb AM |
3348 | s->section = glink; |
3349 | s->value = resolv_vma - glink->vma; | |
3350 | s->name = names; | |
3351 | memcpy (names, "__glink_PLTresolve", sizeof ("__glink_PLTresolve")); | |
3352 | names += sizeof ("__glink_PLTresolve"); | |
3353 | s++; | |
3354 | count++; | |
3355 | } | |
3356 | ||
3357 | /* FIXME: It would be very much nicer to put sym@plt on the | |
3358 | stub rather than on the glink branch table entry. The | |
3359 | objdump disassembler would then use a sensible symbol | |
3360 | name on plt calls. The difficulty in doing so is | |
3361 | a) finding the stubs, and, | |
3362 | b) matching stubs against plt entries, and, | |
3363 | c) there can be multiple stubs for a given plt entry. | |
3364 | ||
3365 | Solving (a) could be done by code scanning, but older | |
3366 | ppc64 binaries used different stubs to current code. | |
3367 | (b) is the tricky one since you need to known the toc | |
3368 | pointer for at least one function that uses a pic stub to | |
3369 | be able to calculate the plt address referenced. | |
3370 | (c) means gdb would need to set multiple breakpoints (or | |
3371 | find the glink branch itself) when setting breakpoints | |
3372 | for pending shared library loads. */ | |
3373 | p = relplt->relocation; | |
3374 | for (i = 0; i < plt_count; i++, p++) | |
3375 | { | |
3376 | size_t len; | |
3377 | ||
3378 | *s = **p->sym_ptr_ptr; | |
3379 | /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since | |
3380 | we are defining a symbol, ensure one of them is set. */ | |
3381 | if ((s->flags & BSF_LOCAL) == 0) | |
3382 | s->flags |= BSF_GLOBAL; | |
6ba2a415 | 3383 | s->flags |= BSF_SYNTHETIC; |
468392fb AM |
3384 | s->section = glink; |
3385 | s->value = glink_vma - glink->vma; | |
3386 | s->name = names; | |
3387 | s->udata.p = NULL; | |
3388 | len = strlen ((*p->sym_ptr_ptr)->name); | |
3389 | memcpy (names, (*p->sym_ptr_ptr)->name, len); | |
3390 | names += len; | |
e054468f AM |
3391 | if (p->addend != 0) |
3392 | { | |
3393 | memcpy (names, "+0x", sizeof ("+0x") - 1); | |
3394 | names += sizeof ("+0x") - 1; | |
3395 | bfd_sprintf_vma (abfd, names, p->addend); | |
3396 | names += strlen (names); | |
3397 | } | |
468392fb AM |
3398 | memcpy (names, "@plt", sizeof ("@plt")); |
3399 | names += sizeof ("@plt"); | |
3400 | s++; | |
3401 | glink_vma += 8; | |
3402 | if (i >= 0x8000) | |
3403 | glink_vma += 4; | |
3404 | } | |
3405 | count += plt_count; | |
3406 | } | |
90e3cdf2 JJ |
3407 | } |
3408 | ||
c9727e01 | 3409 | done: |
a7535cf3 | 3410 | free (syms); |
90e3cdf2 JJ |
3411 | return count; |
3412 | } | |
5bd4f169 | 3413 | \f |
65f38f15 AM |
3414 | /* The following functions are specific to the ELF linker, while |
3415 | functions above are used generally. Those named ppc64_elf_* are | |
3416 | called by the main ELF linker code. They appear in this file more | |
3417 | or less in the order in which they are called. eg. | |
3418 | ppc64_elf_check_relocs is called early in the link process, | |
3419 | ppc64_elf_finish_dynamic_sections is one of the last functions | |
e86ce104 AM |
3420 | called. |
3421 | ||
3422 | PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that | |
3423 | functions have both a function code symbol and a function descriptor | |
3424 | symbol. A call to foo in a relocatable object file looks like: | |
3425 | ||
3426 | . .text | |
3427 | . x: | |
3428 | . bl .foo | |
3429 | . nop | |
3430 | ||
3431 | The function definition in another object file might be: | |
3432 | ||
3433 | . .section .opd | |
3434 | . foo: .quad .foo | |
3435 | . .quad .TOC.@tocbase | |
3436 | . .quad 0 | |
3437 | . | |
3438 | . .text | |
3439 | . .foo: blr | |
3440 | ||
3441 | When the linker resolves the call during a static link, the branch | |
3442 | unsurprisingly just goes to .foo and the .opd information is unused. | |
3443 | If the function definition is in a shared library, things are a little | |
3444 | different: The call goes via a plt call stub, the opd information gets | |
3445 | copied to the plt, and the linker patches the nop. | |
3446 | ||
3447 | . x: | |
3448 | . bl .foo_stub | |
3449 | . ld 2,40(1) | |
3450 | . | |
3451 | . | |
3452 | . .foo_stub: | |
3453 | . addis 12,2,Lfoo@toc@ha # in practice, the call stub | |
411e1bfb | 3454 | . addi 12,12,Lfoo@toc@l # is slightly optimized, but |
e86ce104 AM |
3455 | . std 2,40(1) # this is the general idea |
3456 | . ld 11,0(12) | |
3457 | . ld 2,8(12) | |
3458 | . mtctr 11 | |
3459 | . ld 11,16(12) | |
3460 | . bctr | |
3461 | . | |
3462 | . .section .plt | |
3463 | . Lfoo: reloc (R_PPC64_JMP_SLOT, foo) | |
3464 | ||
3465 | The "reloc ()" notation is supposed to indicate that the linker emits | |
3466 | an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd | |
3467 | copying. | |
3468 | ||
3469 | What are the difficulties here? Well, firstly, the relocations | |
3470 | examined by the linker in check_relocs are against the function code | |
3471 | sym .foo, while the dynamic relocation in the plt is emitted against | |
3472 | the function descriptor symbol, foo. Somewhere along the line, we need | |
3473 | to carefully copy dynamic link information from one symbol to the other. | |
3474 | Secondly, the generic part of the elf linker will make .foo a dynamic | |
3475 | symbol as is normal for most other backends. We need foo dynamic | |
3476 | instead, at least for an application final link. However, when | |
3477 | creating a shared library containing foo, we need to have both symbols | |
3478 | dynamic so that references to .foo are satisfied during the early | |
3479 | stages of linking. Otherwise the linker might decide to pull in a | |
8387904d AM |
3480 | definition from some other object, eg. a static library. |
3481 | ||
3482 | Update: As of August 2004, we support a new convention. Function | |
3483 | calls may use the function descriptor symbol, ie. "bl foo". This | |
3484 | behaves exactly as "bl .foo". */ | |
65f38f15 AM |
3485 | |
3486 | /* The linker needs to keep track of the number of relocs that it | |
3487 | decides to copy as dynamic relocs in check_relocs for each symbol. | |
3488 | This is so that it can later discard them if they are found to be | |
3489 | unnecessary. We store the information in a field extending the | |
3490 | regular ELF linker hash table. */ | |
3491 | ||
3492 | struct ppc_dyn_relocs | |
3493 | { | |
3494 | struct ppc_dyn_relocs *next; | |
3495 | ||
3496 | /* The input section of the reloc. */ | |
3497 | asection *sec; | |
3498 | ||
3499 | /* Total number of relocs copied for the input section. */ | |
3500 | bfd_size_type count; | |
3501 | ||
3502 | /* Number of pc-relative relocs copied for the input section. */ | |
3503 | bfd_size_type pc_count; | |
3504 | }; | |
3505 | ||
1d483afe | 3506 | /* Of those relocs that might be copied as dynamic relocs, this function |
58ac9f71 AM |
3507 | selects those that must be copied when linking a shared library, |
3508 | even when the symbol is local. */ | |
65f38f15 | 3509 | |
1d483afe AM |
3510 | static int |
3511 | must_be_dyn_reloc (struct bfd_link_info *info, | |
3512 | enum elf_ppc64_reloc_type r_type) | |
3513 | { | |
3514 | switch (r_type) | |
3515 | { | |
3516 | default: | |
3517 | return 1; | |
3518 | ||
3519 | case R_PPC64_REL32: | |
3520 | case R_PPC64_REL64: | |
3521 | case R_PPC64_REL30: | |
3522 | return 0; | |
3523 | ||
3524 | case R_PPC64_TPREL16: | |
3525 | case R_PPC64_TPREL16_LO: | |
3526 | case R_PPC64_TPREL16_HI: | |
3527 | case R_PPC64_TPREL16_HA: | |
3528 | case R_PPC64_TPREL16_DS: | |
3529 | case R_PPC64_TPREL16_LO_DS: | |
3530 | case R_PPC64_TPREL16_HIGHER: | |
3531 | case R_PPC64_TPREL16_HIGHERA: | |
3532 | case R_PPC64_TPREL16_HIGHEST: | |
3533 | case R_PPC64_TPREL16_HIGHESTA: | |
3534 | case R_PPC64_TPREL64: | |
3535 | return !info->executable; | |
3536 | } | |
3537 | } | |
65f38f15 | 3538 | |
f4656909 AM |
3539 | /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid |
3540 | copying dynamic variables from a shared lib into an app's dynbss | |
3541 | section, and instead use a dynamic relocation to point into the | |
5d35169e AM |
3542 | shared lib. With code that gcc generates, it's vital that this be |
3543 | enabled; In the PowerPC64 ABI, the address of a function is actually | |
3544 | the address of a function descriptor, which resides in the .opd | |
3545 | section. gcc uses the descriptor directly rather than going via the | |
3546 | GOT as some other ABI's do, which means that initialized function | |
3547 | pointers must reference the descriptor. Thus, a function pointer | |
3548 | initialized to the address of a function in a shared library will | |
3549 | either require a copy reloc, or a dynamic reloc. Using a copy reloc | |
4cc11e76 | 3550 | redefines the function descriptor symbol to point to the copy. This |
5d35169e AM |
3551 | presents a problem as a plt entry for that function is also |
3552 | initialized from the function descriptor symbol and the copy reloc | |
3553 | may not be initialized first. */ | |
a23b6845 | 3554 | #define ELIMINATE_COPY_RELOCS 1 |
f4656909 | 3555 | |
721956f4 AM |
3556 | /* Section name for stubs is the associated section name plus this |
3557 | string. */ | |
3558 | #define STUB_SUFFIX ".stub" | |
3559 | ||
3560 | /* Linker stubs. | |
3561 | ppc_stub_long_branch: | |
3562 | Used when a 14 bit branch (or even a 24 bit branch) can't reach its | |
3563 | destination, but a 24 bit branch in a stub section will reach. | |
3564 | . b dest | |
3565 | ||
3566 | ppc_stub_plt_branch: | |
3567 | Similar to the above, but a 24 bit branch in the stub section won't | |
3568 | reach its destination. | |
87e226ce AM |
3569 | . addis %r12,%r2,xxx@toc@ha |
3570 | . ld %r11,xxx@toc@l(%r12) | |
721956f4 AM |
3571 | . mtctr %r11 |
3572 | . bctr | |
3573 | ||
3574 | ppc_stub_plt_call: | |
2c66dc6c AM |
3575 | Used to call a function in a shared library. If it so happens that |
3576 | the plt entry referenced crosses a 64k boundary, then an extra | |
ac2df442 | 3577 | "addi %r12,%r12,xxx@toc@l" will be inserted before the "mtctr". |
87e226ce | 3578 | . addis %r12,%r2,xxx@toc@ha |
721956f4 | 3579 | . std %r2,40(%r1) |
87e226ce | 3580 | . ld %r11,xxx+0@toc@l(%r12) |
721956f4 | 3581 | . mtctr %r11 |
ac2df442 | 3582 | . ld %r2,xxx+8@toc@l(%r12) |
87e226ce | 3583 | . ld %r11,xxx+16@toc@l(%r12) |
721956f4 | 3584 | . bctr |
ad8e1ba5 AM |
3585 | |
3586 | ppc_stub_long_branch and ppc_stub_plt_branch may also have additional | |
3587 | code to adjust the value and save r2 to support multiple toc sections. | |
3588 | A ppc_stub_long_branch with an r2 offset looks like: | |
3589 | . std %r2,40(%r1) | |
3590 | . addis %r2,%r2,off@ha | |
3591 | . addi %r2,%r2,off@l | |
3592 | . b dest | |
3593 | ||
3594 | A ppc_stub_plt_branch with an r2 offset looks like: | |
3595 | . std %r2,40(%r1) | |
3596 | . addis %r12,%r2,xxx@toc@ha | |
3597 | . ld %r11,xxx@toc@l(%r12) | |
3598 | . addis %r2,%r2,off@ha | |
3599 | . addi %r2,%r2,off@l | |
3600 | . mtctr %r11 | |
3601 | . bctr | |
ac2df442 AM |
3602 | |
3603 | In cases where the "addis" instruction would add zero, the "addis" is | |
3604 | omitted and following instructions modified slightly in some cases. | |
721956f4 AM |
3605 | */ |
3606 | ||
3607 | enum ppc_stub_type { | |
3608 | ppc_stub_none, | |
3609 | ppc_stub_long_branch, | |
ad8e1ba5 | 3610 | ppc_stub_long_branch_r2off, |
721956f4 | 3611 | ppc_stub_plt_branch, |
ad8e1ba5 | 3612 | ppc_stub_plt_branch_r2off, |
721956f4 AM |
3613 | ppc_stub_plt_call |
3614 | }; | |
3615 | ||
3616 | struct ppc_stub_hash_entry { | |
3617 | ||
3618 | /* Base hash table entry structure. */ | |
3619 | struct bfd_hash_entry root; | |
3620 | ||
ad8e1ba5 AM |
3621 | enum ppc_stub_type stub_type; |
3622 | ||
721956f4 AM |
3623 | /* The stub section. */ |
3624 | asection *stub_sec; | |
3625 | ||
3626 | /* Offset within stub_sec of the beginning of this stub. */ | |
3627 | bfd_vma stub_offset; | |
3628 | ||
3629 | /* Given the symbol's value and its section we can determine its final | |
3630 | value when building the stubs (so the stub knows where to jump. */ | |
3631 | bfd_vma target_value; | |
3632 | asection *target_section; | |
3633 | ||
721956f4 AM |
3634 | /* The symbol table entry, if any, that this was derived from. */ |
3635 | struct ppc_link_hash_entry *h; | |
e054468f | 3636 | struct plt_entry *plt_ent; |
721956f4 | 3637 | |
411e1bfb AM |
3638 | /* And the reloc addend that this was derived from. */ |
3639 | bfd_vma addend; | |
3640 | ||
721956f4 AM |
3641 | /* Where this stub is being called from, or, in the case of combined |
3642 | stub sections, the first input section in the group. */ | |
3643 | asection *id_sec; | |
3644 | }; | |
3645 | ||
3646 | struct ppc_branch_hash_entry { | |
3647 | ||
3648 | /* Base hash table entry structure. */ | |
3649 | struct bfd_hash_entry root; | |
3650 | ||
c456f082 | 3651 | /* Offset within branch lookup table. */ |
721956f4 AM |
3652 | unsigned int offset; |
3653 | ||
3654 | /* Generation marker. */ | |
3655 | unsigned int iter; | |
3656 | }; | |
65f38f15 AM |
3657 | |
3658 | struct ppc_link_hash_entry | |
3659 | { | |
3660 | struct elf_link_hash_entry elf; | |
3661 | ||
b3fac117 AM |
3662 | union { |
3663 | /* A pointer to the most recently used stub hash entry against this | |
3664 | symbol. */ | |
3665 | struct ppc_stub_hash_entry *stub_cache; | |
3666 | ||
3667 | /* A pointer to the next symbol starting with a '.' */ | |
3668 | struct ppc_link_hash_entry *next_dot_sym; | |
3669 | } u; | |
721956f4 | 3670 | |
65f38f15 AM |
3671 | /* Track dynamic relocs copied for this symbol. */ |
3672 | struct ppc_dyn_relocs *dyn_relocs; | |
e86ce104 | 3673 | |
721956f4 | 3674 | /* Link between function code and descriptor symbols. */ |
34814b9f | 3675 | struct ppc_link_hash_entry *oh; |
721956f4 | 3676 | |
e86ce104 AM |
3677 | /* Flag function code and descriptor symbols. */ |
3678 | unsigned int is_func:1; | |
3679 | unsigned int is_func_descriptor:1; | |
908b32fc | 3680 | unsigned int fake:1; |
411e1bfb | 3681 | |
c5614fa4 AM |
3682 | /* Whether global opd/toc sym has been adjusted or not. |
3683 | After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag | |
3684 | should be set for all globals defined in any opd/toc section. */ | |
754021d0 AM |
3685 | unsigned int adjust_done:1; |
3686 | ||
99877b66 AM |
3687 | /* Set if we twiddled this symbol to weak at some stage. */ |
3688 | unsigned int was_undefined:1; | |
3689 | ||
411e1bfb | 3690 | /* Contexts in which symbol is used in the GOT (or TOC). |
e7b938ca AM |
3691 | TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the |
3692 | corresponding relocs are encountered during check_relocs. | |
3693 | tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to | |
3694 | indicate the corresponding GOT entry type is not needed. | |
3695 | tls_optimize may also set TLS_TPRELGD when a GD reloc turns into | |
3696 | a TPREL one. We use a separate flag rather than setting TPREL | |
3697 | just for convenience in distinguishing the two cases. */ | |
3698 | #define TLS_GD 1 /* GD reloc. */ | |
3699 | #define TLS_LD 2 /* LD reloc. */ | |
3700 | #define TLS_TPREL 4 /* TPREL reloc, => IE. */ | |
3701 | #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */ | |
3702 | #define TLS_TLS 16 /* Any TLS reloc. */ | |
3703 | #define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */ | |
3704 | #define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */ | |
e054468f | 3705 | #define PLT_IFUNC 128 /* STT_GNU_IFUNC. */ |
f961d9dd | 3706 | unsigned char tls_mask; |
65f38f15 AM |
3707 | }; |
3708 | ||
3709 | /* ppc64 ELF linker hash table. */ | |
3710 | ||
3711 | struct ppc_link_hash_table | |
3712 | { | |
3713 | struct elf_link_hash_table elf; | |
3714 | ||
721956f4 AM |
3715 | /* The stub hash table. */ |
3716 | struct bfd_hash_table stub_hash_table; | |
3717 | ||
3718 | /* Another hash table for plt_branch stubs. */ | |
3719 | struct bfd_hash_table branch_hash_table; | |
3720 | ||
3721 | /* Linker stub bfd. */ | |
3722 | bfd *stub_bfd; | |
3723 | ||
3724 | /* Linker call-backs. */ | |
4ce794b7 AM |
3725 | asection * (*add_stub_section) (const char *, asection *); |
3726 | void (*layout_sections_again) (void); | |
721956f4 AM |
3727 | |
3728 | /* Array to keep track of which stub sections have been created, and | |
3729 | information on stub grouping. */ | |
3730 | struct map_stub { | |
3731 | /* This is the section to which stubs in the group will be attached. */ | |
3732 | asection *link_sec; | |
3733 | /* The stub section. */ | |
3734 | asection *stub_sec; | |
ad8e1ba5 AM |
3735 | /* Along with elf_gp, specifies the TOC pointer used in this group. */ |
3736 | bfd_vma toc_off; | |
721956f4 AM |
3737 | } *stub_group; |
3738 | ||
ad8e1ba5 AM |
3739 | /* Temp used when calculating TOC pointers. */ |
3740 | bfd_vma toc_curr; | |
bf102f86 AM |
3741 | bfd *toc_bfd; |
3742 | asection *toc_first_sec; | |
ad8e1ba5 | 3743 | |
8f3bab57 AM |
3744 | /* Highest input section id. */ |
3745 | int top_id; | |
3746 | ||
734b6cf9 AM |
3747 | /* Highest output section index. */ |
3748 | int top_index; | |
3749 | ||
b3fac117 AM |
3750 | /* Used when adding symbols. */ |
3751 | struct ppc_link_hash_entry *dot_syms; | |
3752 | ||
734b6cf9 AM |
3753 | /* List of input sections for each output section. */ |
3754 | asection **input_list; | |
721956f4 | 3755 | |
65f38f15 | 3756 | /* Short-cuts to get to dynamic linker sections. */ |
4ce794b7 | 3757 | asection *got; |
4ce794b7 AM |
3758 | asection *plt; |
3759 | asection *relplt; | |
e054468f AM |
3760 | asection *iplt; |
3761 | asection *reliplt; | |
4ce794b7 AM |
3762 | asection *dynbss; |
3763 | asection *relbss; | |
3764 | asection *glink; | |
82bd7b59 | 3765 | asection *sfpr; |
4ce794b7 AM |
3766 | asection *brlt; |
3767 | asection *relbrlt; | |
ec338859 | 3768 | |
8387904d AM |
3769 | /* Shortcut to .__tls_get_addr and __tls_get_addr. */ |
3770 | struct ppc_link_hash_entry *tls_get_addr; | |
3771 | struct ppc_link_hash_entry *tls_get_addr_fd; | |
411e1bfb | 3772 | |
927be08e AM |
3773 | /* The size of reliplt used by got entry relocs. */ |
3774 | bfd_size_type got_reli_size; | |
3775 | ||
9b5ecbd0 AM |
3776 | /* Statistics. */ |
3777 | unsigned long stub_count[ppc_stub_plt_call]; | |
3778 | ||
ee75fd95 AM |
3779 | /* Number of stubs against global syms. */ |
3780 | unsigned long stub_globals; | |
3781 | ||
ad8e1ba5 | 3782 | /* Set if we should emit symbols for stubs. */ |
99877b66 | 3783 | unsigned int emit_stub_syms:1; |
ad8e1ba5 | 3784 | |
a7f2871e AM |
3785 | /* Set if __tls_get_addr optimization should not be done. */ |
3786 | unsigned int no_tls_get_addr_opt:1; | |
3787 | ||
4c52953f | 3788 | /* Support for multiple toc sections. */ |
33c0ec9d | 3789 | unsigned int do_multi_toc:1; |
4c52953f | 3790 | unsigned int multi_toc_needed:1; |
927be08e | 3791 | unsigned int second_toc_pass:1; |
67f0cbdb | 3792 | unsigned int do_toc_opt:1; |
4c52953f | 3793 | |
5d1634d7 | 3794 | /* Set on error. */ |
99877b66 | 3795 | unsigned int stub_error:1; |
721956f4 | 3796 | |
7d9616d7 | 3797 | /* Temp used by ppc64_elf_process_dot_syms. */ |
99877b66 | 3798 | unsigned int twiddled_syms:1; |
721956f4 AM |
3799 | |
3800 | /* Incremented every time we size stubs. */ | |
3801 | unsigned int stub_iteration; | |
5d1634d7 | 3802 | |
87d72d41 AM |
3803 | /* Small local sym cache. */ |
3804 | struct sym_cache sym_cache; | |
65f38f15 AM |
3805 | }; |
3806 | ||
4c52953f AM |
3807 | /* Rename some of the generic section flags to better document how they |
3808 | are used here. */ | |
b0dddeec AM |
3809 | |
3810 | /* Nonzero if this section has TLS related relocations. */ | |
3811 | #define has_tls_reloc sec_flg0 | |
3812 | ||
3813 | /* Nonzero if this section has a call to __tls_get_addr. */ | |
3814 | #define has_tls_get_addr_call sec_flg1 | |
3815 | ||
3816 | /* Nonzero if this section has any toc or got relocs. */ | |
3817 | #define has_toc_reloc sec_flg2 | |
3818 | ||
3819 | /* Nonzero if this section has a call to another section that uses | |
3820 | the toc or got. */ | |
d77c8a4b | 3821 | #define makes_toc_func_call sec_flg3 |
b0dddeec AM |
3822 | |
3823 | /* Recursion protection when determining above flag. */ | |
d77c8a4b | 3824 | #define call_check_in_progress sec_flg4 |
70cc837d | 3825 | #define call_check_done sec_flg5 |
4c52953f | 3826 | |
65f38f15 AM |
3827 | /* Get the ppc64 ELF linker hash table from a link_info structure. */ |
3828 | ||
3829 | #define ppc_hash_table(p) \ | |
4dfe6ac6 NC |
3830 | (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \ |
3831 | == PPC64_ELF_DATA ? ((struct ppc_link_hash_table *) ((p)->hash)) : NULL) | |
65f38f15 | 3832 | |
721956f4 AM |
3833 | #define ppc_stub_hash_lookup(table, string, create, copy) \ |
3834 | ((struct ppc_stub_hash_entry *) \ | |
3835 | bfd_hash_lookup ((table), (string), (create), (copy))) | |
3836 | ||
3837 | #define ppc_branch_hash_lookup(table, string, create, copy) \ | |
3838 | ((struct ppc_branch_hash_entry *) \ | |
3839 | bfd_hash_lookup ((table), (string), (create), (copy))) | |
3840 | ||
3841 | /* Create an entry in the stub hash table. */ | |
3842 | ||
3843 | static struct bfd_hash_entry * | |
4ce794b7 AM |
3844 | stub_hash_newfunc (struct bfd_hash_entry *entry, |
3845 | struct bfd_hash_table *table, | |
3846 | const char *string) | |
721956f4 AM |
3847 | { |
3848 | /* Allocate the structure if it has not already been allocated by a | |
3849 | subclass. */ | |
3850 | if (entry == NULL) | |
3851 | { | |
3852 | entry = bfd_hash_allocate (table, sizeof (struct ppc_stub_hash_entry)); | |
3853 | if (entry == NULL) | |
3854 | return entry; | |
3855 | } | |
3856 | ||
3857 | /* Call the allocation method of the superclass. */ | |
3858 | entry = bfd_hash_newfunc (entry, table, string); | |
3859 | if (entry != NULL) | |
3860 | { | |
3861 | struct ppc_stub_hash_entry *eh; | |
3862 | ||
3863 | /* Initialize the local fields. */ | |
3864 | eh = (struct ppc_stub_hash_entry *) entry; | |
ad8e1ba5 | 3865 | eh->stub_type = ppc_stub_none; |
721956f4 AM |
3866 | eh->stub_sec = NULL; |
3867 | eh->stub_offset = 0; | |
3868 | eh->target_value = 0; | |
3869 | eh->target_section = NULL; | |
721956f4 AM |
3870 | eh->h = NULL; |
3871 | eh->id_sec = NULL; | |
3872 | } | |
3873 | ||
3874 | return entry; | |
3875 | } | |
3876 | ||
3877 | /* Create an entry in the branch hash table. */ | |
3878 | ||
3879 | static struct bfd_hash_entry * | |
4ce794b7 AM |
3880 | branch_hash_newfunc (struct bfd_hash_entry *entry, |
3881 | struct bfd_hash_table *table, | |
3882 | const char *string) | |
721956f4 AM |
3883 | { |
3884 | /* Allocate the structure if it has not already been allocated by a | |
3885 | subclass. */ | |
3886 | if (entry == NULL) | |
3887 | { | |
3888 | entry = bfd_hash_allocate (table, sizeof (struct ppc_branch_hash_entry)); | |
3889 | if (entry == NULL) | |
3890 | return entry; | |
3891 | } | |
3892 | ||
3893 | /* Call the allocation method of the superclass. */ | |
3894 | entry = bfd_hash_newfunc (entry, table, string); | |
3895 | if (entry != NULL) | |
3896 | { | |
3897 | struct ppc_branch_hash_entry *eh; | |
3898 | ||
3899 | /* Initialize the local fields. */ | |
3900 | eh = (struct ppc_branch_hash_entry *) entry; | |
3901 | eh->offset = 0; | |
3902 | eh->iter = 0; | |
3903 | } | |
3904 | ||
3905 | return entry; | |
3906 | } | |
3907 | ||
65f38f15 AM |
3908 | /* Create an entry in a ppc64 ELF linker hash table. */ |
3909 | ||
3910 | static struct bfd_hash_entry * | |
4ce794b7 AM |
3911 | link_hash_newfunc (struct bfd_hash_entry *entry, |
3912 | struct bfd_hash_table *table, | |
3913 | const char *string) | |
65f38f15 AM |
3914 | { |
3915 | /* Allocate the structure if it has not already been allocated by a | |
3916 | subclass. */ | |
3917 | if (entry == NULL) | |
3918 | { | |
3919 | entry = bfd_hash_allocate (table, sizeof (struct ppc_link_hash_entry)); | |
3920 | if (entry == NULL) | |
3921 | return entry; | |
3922 | } | |
3923 | ||
3924 | /* Call the allocation method of the superclass. */ | |
3925 | entry = _bfd_elf_link_hash_newfunc (entry, table, string); | |
3926 | if (entry != NULL) | |
3927 | { | |
3928 | struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) entry; | |
3929 | ||
b3fac117 | 3930 | memset (&eh->u.stub_cache, 0, |
908b32fc | 3931 | (sizeof (struct ppc_link_hash_entry) |
b3fac117 AM |
3932 | - offsetof (struct ppc_link_hash_entry, u.stub_cache))); |
3933 | ||
3934 | /* When making function calls, old ABI code references function entry | |
3935 | points (dot symbols), while new ABI code references the function | |
3936 | descriptor symbol. We need to make any combination of reference and | |
3937 | definition work together, without breaking archive linking. | |
3938 | ||
3939 | For a defined function "foo" and an undefined call to "bar": | |
3940 | An old object defines "foo" and ".foo", references ".bar" (possibly | |
3941 | "bar" too). | |
3942 | A new object defines "foo" and references "bar". | |
3943 | ||
3944 | A new object thus has no problem with its undefined symbols being | |
3945 | satisfied by definitions in an old object. On the other hand, the | |
3946 | old object won't have ".bar" satisfied by a new object. | |
3947 | ||
3948 | Keep a list of newly added dot-symbols. */ | |
3949 | ||
3950 | if (string[0] == '.') | |
3951 | { | |
3952 | struct ppc_link_hash_table *htab; | |
3953 | ||
3954 | htab = (struct ppc_link_hash_table *) table; | |
3955 | eh->u.next_dot_sym = htab->dot_syms; | |
3956 | htab->dot_syms = eh; | |
3957 | } | |
65f38f15 AM |
3958 | } |
3959 | ||
3960 | return entry; | |
3961 | } | |
3962 | ||
3963 | /* Create a ppc64 ELF linker hash table. */ | |
3964 | ||
3965 | static struct bfd_link_hash_table * | |
4ce794b7 | 3966 | ppc64_elf_link_hash_table_create (bfd *abfd) |
65f38f15 AM |
3967 | { |
3968 | struct ppc_link_hash_table *htab; | |
3969 | bfd_size_type amt = sizeof (struct ppc_link_hash_table); | |
3970 | ||
4ce794b7 | 3971 | htab = bfd_zmalloc (amt); |
65f38f15 AM |
3972 | if (htab == NULL) |
3973 | return NULL; | |
3974 | ||
66eb6687 | 3975 | if (!_bfd_elf_link_hash_table_init (&htab->elf, abfd, link_hash_newfunc, |
4dfe6ac6 NC |
3976 | sizeof (struct ppc_link_hash_entry), |
3977 | PPC64_ELF_DATA)) | |
65f38f15 | 3978 | { |
e2d34d7d | 3979 | free (htab); |
65f38f15 AM |
3980 | return NULL; |
3981 | } | |
3982 | ||
721956f4 | 3983 | /* Init the stub hash table too. */ |
66eb6687 AM |
3984 | if (!bfd_hash_table_init (&htab->stub_hash_table, stub_hash_newfunc, |
3985 | sizeof (struct ppc_stub_hash_entry))) | |
721956f4 AM |
3986 | return NULL; |
3987 | ||
3988 | /* And the branch hash table. */ | |
66eb6687 AM |
3989 | if (!bfd_hash_table_init (&htab->branch_hash_table, branch_hash_newfunc, |
3990 | sizeof (struct ppc_branch_hash_entry))) | |
721956f4 AM |
3991 | return NULL; |
3992 | ||
3254fd24 AM |
3993 | /* Initializing two fields of the union is just cosmetic. We really |
3994 | only care about glist, but when compiled on a 32-bit host the | |
3995 | bfd_vma fields are larger. Setting the bfd_vma to zero makes | |
3996 | debugger inspection of these fields look nicer. */ | |
a6aa5195 AM |
3997 | htab->elf.init_got_refcount.refcount = 0; |
3998 | htab->elf.init_got_refcount.glist = NULL; | |
3999 | htab->elf.init_plt_refcount.refcount = 0; | |
4000 | htab->elf.init_plt_refcount.glist = NULL; | |
4001 | htab->elf.init_got_offset.offset = 0; | |
4002 | htab->elf.init_got_offset.glist = NULL; | |
4003 | htab->elf.init_plt_offset.offset = 0; | |
4004 | htab->elf.init_plt_offset.glist = NULL; | |
3254fd24 | 4005 | |
65f38f15 AM |
4006 | return &htab->elf.root; |
4007 | } | |
4008 | ||
721956f4 AM |
4009 | /* Free the derived linker hash table. */ |
4010 | ||
4011 | static void | |
4ce794b7 | 4012 | ppc64_elf_link_hash_table_free (struct bfd_link_hash_table *hash) |
721956f4 AM |
4013 | { |
4014 | struct ppc_link_hash_table *ret = (struct ppc_link_hash_table *) hash; | |
4015 | ||
4016 | bfd_hash_table_free (&ret->stub_hash_table); | |
4017 | bfd_hash_table_free (&ret->branch_hash_table); | |
4018 | _bfd_generic_link_hash_table_free (hash); | |
4019 | } | |
4020 | ||
e717da7e AM |
4021 | /* Satisfy the ELF linker by filling in some fields in our fake bfd. */ |
4022 | ||
4023 | void | |
4024 | ppc64_elf_init_stub_bfd (bfd *abfd, struct bfd_link_info *info) | |
4025 | { | |
4026 | struct ppc_link_hash_table *htab; | |
4027 | ||
4028 | elf_elfheader (abfd)->e_ident[EI_CLASS] = ELFCLASS64; | |
4029 | ||
4030 | /* Always hook our dynamic sections into the first bfd, which is the | |
4031 | linker created stub bfd. This ensures that the GOT header is at | |
4032 | the start of the output TOC section. */ | |
4033 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
4034 | if (htab == NULL) |
4035 | return; | |
e717da7e AM |
4036 | htab->stub_bfd = abfd; |
4037 | htab->elf.dynobj = abfd; | |
4038 | } | |
4039 | ||
721956f4 AM |
4040 | /* Build a name for an entry in the stub hash table. */ |
4041 | ||
4042 | static char * | |
4ce794b7 AM |
4043 | ppc_stub_name (const asection *input_section, |
4044 | const asection *sym_sec, | |
4045 | const struct ppc_link_hash_entry *h, | |
4046 | const Elf_Internal_Rela *rel) | |
721956f4 AM |
4047 | { |
4048 | char *stub_name; | |
4049 | bfd_size_type len; | |
4050 | ||
4051 | /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31 | |
4052 | offsets from a sym as a branch target? In fact, we could | |
4053 | probably assume the addend is always zero. */ | |
4054 | BFD_ASSERT (((int) rel->r_addend & 0xffffffff) == rel->r_addend); | |
4055 | ||
4056 | if (h) | |
4057 | { | |
4058 | len = 8 + 1 + strlen (h->elf.root.root.string) + 1 + 8 + 1; | |
4059 | stub_name = bfd_malloc (len); | |
46de2a7c AM |
4060 | if (stub_name == NULL) |
4061 | return stub_name; | |
4062 | ||
4063 | sprintf (stub_name, "%08x.%s+%x", | |
4064 | input_section->id & 0xffffffff, | |
4065 | h->elf.root.root.string, | |
4066 | (int) rel->r_addend & 0xffffffff); | |
721956f4 AM |
4067 | } |
4068 | else | |
4069 | { | |
ad8e1ba5 | 4070 | len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1; |
721956f4 | 4071 | stub_name = bfd_malloc (len); |
46de2a7c AM |
4072 | if (stub_name == NULL) |
4073 | return stub_name; | |
4074 | ||
4075 | sprintf (stub_name, "%08x.%x:%x+%x", | |
4076 | input_section->id & 0xffffffff, | |
4077 | sym_sec->id & 0xffffffff, | |
4078 | (int) ELF64_R_SYM (rel->r_info) & 0xffffffff, | |
4079 | (int) rel->r_addend & 0xffffffff); | |
721956f4 | 4080 | } |
ee75fd95 AM |
4081 | if (stub_name[len - 2] == '+' && stub_name[len - 1] == '0') |
4082 | stub_name[len - 2] = 0; | |
721956f4 AM |
4083 | return stub_name; |
4084 | } | |
4085 | ||
4086 | /* Look up an entry in the stub hash. Stub entries are cached because | |
4087 | creating the stub name takes a bit of time. */ | |
4088 | ||
4089 | static struct ppc_stub_hash_entry * | |
4ce794b7 AM |
4090 | ppc_get_stub_entry (const asection *input_section, |
4091 | const asection *sym_sec, | |
039b3fef | 4092 | struct ppc_link_hash_entry *h, |
4ce794b7 AM |
4093 | const Elf_Internal_Rela *rel, |
4094 | struct ppc_link_hash_table *htab) | |
721956f4 AM |
4095 | { |
4096 | struct ppc_stub_hash_entry *stub_entry; | |
721956f4 AM |
4097 | const asection *id_sec; |
4098 | ||
4099 | /* If this input section is part of a group of sections sharing one | |
4100 | stub section, then use the id of the first section in the group. | |
4101 | Stub names need to include a section id, as there may well be | |
4102 | more than one stub used to reach say, printf, and we need to | |
4103 | distinguish between them. */ | |
4104 | id_sec = htab->stub_group[input_section->id].link_sec; | |
4105 | ||
b3fac117 AM |
4106 | if (h != NULL && h->u.stub_cache != NULL |
4107 | && h->u.stub_cache->h == h | |
4108 | && h->u.stub_cache->id_sec == id_sec) | |
721956f4 | 4109 | { |
b3fac117 | 4110 | stub_entry = h->u.stub_cache; |
721956f4 AM |
4111 | } |
4112 | else | |
4113 | { | |
4114 | char *stub_name; | |
4115 | ||
4116 | stub_name = ppc_stub_name (id_sec, sym_sec, h, rel); | |
4117 | if (stub_name == NULL) | |
4118 | return NULL; | |
4119 | ||
4120 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, | |
b34976b6 | 4121 | stub_name, FALSE, FALSE); |
721956f4 | 4122 | if (h != NULL) |
b3fac117 | 4123 | h->u.stub_cache = stub_entry; |
721956f4 AM |
4124 | |
4125 | free (stub_name); | |
4126 | } | |
4127 | ||
4128 | return stub_entry; | |
4129 | } | |
4130 | ||
4131 | /* Add a new stub entry to the stub hash. Not all fields of the new | |
4132 | stub entry are initialised. */ | |
4133 | ||
4134 | static struct ppc_stub_hash_entry * | |
4ce794b7 AM |
4135 | ppc_add_stub (const char *stub_name, |
4136 | asection *section, | |
4137 | struct ppc_link_hash_table *htab) | |
721956f4 AM |
4138 | { |
4139 | asection *link_sec; | |
4140 | asection *stub_sec; | |
4141 | struct ppc_stub_hash_entry *stub_entry; | |
4142 | ||
4143 | link_sec = htab->stub_group[section->id].link_sec; | |
4144 | stub_sec = htab->stub_group[section->id].stub_sec; | |
4145 | if (stub_sec == NULL) | |
4146 | { | |
4147 | stub_sec = htab->stub_group[link_sec->id].stub_sec; | |
4148 | if (stub_sec == NULL) | |
4149 | { | |
d4c88bbb | 4150 | size_t namelen; |
721956f4 AM |
4151 | bfd_size_type len; |
4152 | char *s_name; | |
4153 | ||
d4c88bbb AM |
4154 | namelen = strlen (link_sec->name); |
4155 | len = namelen + sizeof (STUB_SUFFIX); | |
721956f4 AM |
4156 | s_name = bfd_alloc (htab->stub_bfd, len); |
4157 | if (s_name == NULL) | |
4158 | return NULL; | |
4159 | ||
d4c88bbb AM |
4160 | memcpy (s_name, link_sec->name, namelen); |
4161 | memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX)); | |
721956f4 AM |
4162 | stub_sec = (*htab->add_stub_section) (s_name, link_sec); |
4163 | if (stub_sec == NULL) | |
4164 | return NULL; | |
4165 | htab->stub_group[link_sec->id].stub_sec = stub_sec; | |
4166 | } | |
4167 | htab->stub_group[section->id].stub_sec = stub_sec; | |
4168 | } | |
4169 | ||
4170 | /* Enter this entry into the linker stub hash table. */ | |
4171 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, stub_name, | |
b34976b6 | 4172 | TRUE, FALSE); |
721956f4 AM |
4173 | if (stub_entry == NULL) |
4174 | { | |
d003868e AM |
4175 | (*_bfd_error_handler) (_("%B: cannot create stub entry %s"), |
4176 | section->owner, stub_name); | |
721956f4 AM |
4177 | return NULL; |
4178 | } | |
4179 | ||
4180 | stub_entry->stub_sec = stub_sec; | |
4181 | stub_entry->stub_offset = 0; | |
4182 | stub_entry->id_sec = link_sec; | |
4183 | return stub_entry; | |
4184 | } | |
4185 | ||
82bd7b59 AM |
4186 | /* Create sections for linker generated code. */ |
4187 | ||
b34976b6 | 4188 | static bfd_boolean |
4ce794b7 | 4189 | create_linkage_sections (bfd *dynobj, struct bfd_link_info *info) |
82bd7b59 AM |
4190 | { |
4191 | struct ppc_link_hash_table *htab; | |
4192 | flagword flags; | |
4193 | ||
4194 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
4195 | if (htab == NULL) |
4196 | return FALSE; | |
82bd7b59 AM |
4197 | |
4198 | /* Create .sfpr for code to save and restore fp regs. */ | |
4199 | flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY | |
4200 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
3496cb2a L |
4201 | htab->sfpr = bfd_make_section_anyway_with_flags (dynobj, ".sfpr", |
4202 | flags); | |
82bd7b59 | 4203 | if (htab->sfpr == NULL |
82bd7b59 | 4204 | || ! bfd_set_section_alignment (dynobj, htab->sfpr, 2)) |
b34976b6 | 4205 | return FALSE; |
82bd7b59 | 4206 | |
721956f4 | 4207 | /* Create .glink for lazy dynamic linking support. */ |
3496cb2a L |
4208 | htab->glink = bfd_make_section_anyway_with_flags (dynobj, ".glink", |
4209 | flags); | |
4ce794b7 | 4210 | if (htab->glink == NULL |
ee4bf8d2 | 4211 | || ! bfd_set_section_alignment (dynobj, htab->glink, 3)) |
b34976b6 | 4212 | return FALSE; |
82bd7b59 | 4213 | |
e054468f AM |
4214 | flags = SEC_ALLOC | SEC_LINKER_CREATED; |
4215 | htab->iplt = bfd_make_section_anyway_with_flags (dynobj, ".iplt", flags); | |
4216 | if (htab->iplt == NULL | |
4217 | || ! bfd_set_section_alignment (dynobj, htab->iplt, 3)) | |
4218 | return FALSE; | |
4219 | ||
4220 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | |
4221 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
4222 | htab->reliplt = bfd_make_section_anyway_with_flags (dynobj, | |
4223 | ".rela.iplt", | |
4224 | flags); | |
4225 | if (htab->reliplt == NULL | |
4226 | || ! bfd_set_section_alignment (dynobj, htab->reliplt, 3)) | |
4227 | return FALSE; | |
4228 | ||
c456f082 | 4229 | /* Create branch lookup table for plt_branch stubs. */ |
e4e0193e AM |
4230 | flags = (SEC_ALLOC | SEC_LOAD |
4231 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
4232 | htab->brlt = bfd_make_section_anyway_with_flags (dynobj, ".branch_lt", | |
4233 | flags); | |
4ce794b7 | 4234 | if (htab->brlt == NULL |
4ce794b7 | 4235 | || ! bfd_set_section_alignment (dynobj, htab->brlt, 3)) |
b34976b6 | 4236 | return FALSE; |
721956f4 | 4237 | |
e4e0193e | 4238 | if (!info->shared) |
c456f082 AM |
4239 | return TRUE; |
4240 | ||
e4e0193e AM |
4241 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY |
4242 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
4243 | htab->relbrlt = bfd_make_section_anyway_with_flags (dynobj, | |
4244 | ".rela.branch_lt", | |
4245 | flags); | |
e054468f | 4246 | if (htab->relbrlt == NULL |
c456f082 AM |
4247 | || ! bfd_set_section_alignment (dynobj, htab->relbrlt, 3)) |
4248 | return FALSE; | |
4249 | ||
b34976b6 | 4250 | return TRUE; |
82bd7b59 AM |
4251 | } |
4252 | ||
e717da7e AM |
4253 | /* Create .got and .rela.got sections in ABFD, and .got in dynobj if |
4254 | not already done. */ | |
65f38f15 | 4255 | |
b34976b6 | 4256 | static bfd_boolean |
e717da7e | 4257 | create_got_section (bfd *abfd, struct bfd_link_info *info) |
65f38f15 | 4258 | { |
e717da7e AM |
4259 | asection *got, *relgot; |
4260 | flagword flags; | |
4261 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
65f38f15 | 4262 | |
0c8d6e5c | 4263 | if (!is_ppc64_elf (abfd)) |
0ffa91dd | 4264 | return FALSE; |
4dfe6ac6 NC |
4265 | if (htab == NULL) |
4266 | return FALSE; | |
0ffa91dd | 4267 | |
4ce794b7 | 4268 | if (!htab->got) |
e717da7e AM |
4269 | { |
4270 | if (! _bfd_elf_create_got_section (htab->elf.dynobj, info)) | |
4271 | return FALSE; | |
4272 | ||
4273 | htab->got = bfd_get_section_by_name (htab->elf.dynobj, ".got"); | |
4274 | if (!htab->got) | |
4275 | abort (); | |
4276 | } | |
4277 | ||
4278 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY | |
4279 | | SEC_LINKER_CREATED); | |
4280 | ||
c456f082 | 4281 | got = bfd_make_section_anyway_with_flags (abfd, ".got", flags); |
e717da7e | 4282 | if (!got |
e717da7e AM |
4283 | || !bfd_set_section_alignment (abfd, got, 3)) |
4284 | return FALSE; | |
65f38f15 | 4285 | |
c456f082 AM |
4286 | relgot = bfd_make_section_anyway_with_flags (abfd, ".rela.got", |
4287 | flags | SEC_READONLY); | |
e717da7e | 4288 | if (!relgot |
e717da7e | 4289 | || ! bfd_set_section_alignment (abfd, relgot, 3)) |
b34976b6 | 4290 | return FALSE; |
e717da7e AM |
4291 | |
4292 | ppc64_elf_tdata (abfd)->got = got; | |
4293 | ppc64_elf_tdata (abfd)->relgot = relgot; | |
b34976b6 | 4294 | return TRUE; |
65f38f15 | 4295 | } |
5bd4f169 | 4296 | |
82bd7b59 | 4297 | /* Create the dynamic sections, and set up shortcuts. */ |
5bd4f169 | 4298 | |
b34976b6 | 4299 | static bfd_boolean |
4ce794b7 | 4300 | ppc64_elf_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info) |
5bd4f169 | 4301 | { |
65f38f15 | 4302 | struct ppc_link_hash_table *htab; |
5bd4f169 | 4303 | |
65f38f15 | 4304 | if (!_bfd_elf_create_dynamic_sections (dynobj, info)) |
b34976b6 | 4305 | return FALSE; |
65f38f15 | 4306 | |
e717da7e | 4307 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
4308 | if (htab == NULL) |
4309 | return FALSE; | |
4310 | ||
e717da7e AM |
4311 | if (!htab->got) |
4312 | htab->got = bfd_get_section_by_name (dynobj, ".got"); | |
4ce794b7 AM |
4313 | htab->plt = bfd_get_section_by_name (dynobj, ".plt"); |
4314 | htab->relplt = bfd_get_section_by_name (dynobj, ".rela.plt"); | |
4315 | htab->dynbss = bfd_get_section_by_name (dynobj, ".dynbss"); | |
65f38f15 | 4316 | if (!info->shared) |
4ce794b7 | 4317 | htab->relbss = bfd_get_section_by_name (dynobj, ".rela.bss"); |
65f38f15 | 4318 | |
e717da7e | 4319 | if (!htab->got || !htab->plt || !htab->relplt || !htab->dynbss |
4ce794b7 | 4320 | || (!info->shared && !htab->relbss)) |
65f38f15 AM |
4321 | abort (); |
4322 | ||
b34976b6 | 4323 | return TRUE; |
5bd4f169 AM |
4324 | } |
4325 | ||
b31867b6 AM |
4326 | /* Follow indirect and warning symbol links. */ |
4327 | ||
4328 | static inline struct bfd_link_hash_entry * | |
4329 | follow_link (struct bfd_link_hash_entry *h) | |
4330 | { | |
4331 | while (h->type == bfd_link_hash_indirect | |
4332 | || h->type == bfd_link_hash_warning) | |
4333 | h = h->u.i.link; | |
4334 | return h; | |
4335 | } | |
4336 | ||
4337 | static inline struct elf_link_hash_entry * | |
4338 | elf_follow_link (struct elf_link_hash_entry *h) | |
4339 | { | |
4340 | return (struct elf_link_hash_entry *) follow_link (&h->root); | |
4341 | } | |
4342 | ||
4343 | static inline struct ppc_link_hash_entry * | |
4344 | ppc_follow_link (struct ppc_link_hash_entry *h) | |
4345 | { | |
4346 | return (struct ppc_link_hash_entry *) follow_link (&h->elf.root); | |
4347 | } | |
4348 | ||
40d16e0b AM |
4349 | /* Merge PLT info on FROM with that on TO. */ |
4350 | ||
4351 | static void | |
4352 | move_plt_plist (struct ppc_link_hash_entry *from, | |
4353 | struct ppc_link_hash_entry *to) | |
4354 | { | |
4355 | if (from->elf.plt.plist != NULL) | |
4356 | { | |
4357 | if (to->elf.plt.plist != NULL) | |
4358 | { | |
4359 | struct plt_entry **entp; | |
4360 | struct plt_entry *ent; | |
4361 | ||
4362 | for (entp = &from->elf.plt.plist; (ent = *entp) != NULL; ) | |
4363 | { | |
4364 | struct plt_entry *dent; | |
4365 | ||
4366 | for (dent = to->elf.plt.plist; dent != NULL; dent = dent->next) | |
4367 | if (dent->addend == ent->addend) | |
4368 | { | |
4369 | dent->plt.refcount += ent->plt.refcount; | |
4370 | *entp = ent->next; | |
4371 | break; | |
4372 | } | |
4373 | if (dent == NULL) | |
4374 | entp = &ent->next; | |
4375 | } | |
4376 | *entp = to->elf.plt.plist; | |
4377 | } | |
4378 | ||
4379 | to->elf.plt.plist = from->elf.plt.plist; | |
4380 | from->elf.plt.plist = NULL; | |
4381 | } | |
4382 | } | |
4383 | ||
65f38f15 AM |
4384 | /* Copy the extra info we tack onto an elf_link_hash_entry. */ |
4385 | ||
4386 | static void | |
fcfa13d2 AM |
4387 | ppc64_elf_copy_indirect_symbol (struct bfd_link_info *info, |
4388 | struct elf_link_hash_entry *dir, | |
4389 | struct elf_link_hash_entry *ind) | |
65f38f15 AM |
4390 | { |
4391 | struct ppc_link_hash_entry *edir, *eind; | |
4392 | ||
4393 | edir = (struct ppc_link_hash_entry *) dir; | |
4394 | eind = (struct ppc_link_hash_entry *) ind; | |
4395 | ||
411e1bfb | 4396 | /* Copy over any dynamic relocs we may have on the indirect sym. */ |
bbd7ec4a | 4397 | if (eind->dyn_relocs != NULL) |
65f38f15 | 4398 | { |
bbd7ec4a AM |
4399 | if (edir->dyn_relocs != NULL) |
4400 | { | |
4401 | struct ppc_dyn_relocs **pp; | |
4402 | struct ppc_dyn_relocs *p; | |
4403 | ||
fcfa13d2 | 4404 | /* Add reloc counts against the indirect sym to the direct sym |
bbd7ec4a AM |
4405 | list. Merge any entries against the same section. */ |
4406 | for (pp = &eind->dyn_relocs; (p = *pp) != NULL; ) | |
4407 | { | |
4408 | struct ppc_dyn_relocs *q; | |
4409 | ||
4410 | for (q = edir->dyn_relocs; q != NULL; q = q->next) | |
4411 | if (q->sec == p->sec) | |
4412 | { | |
4413 | q->pc_count += p->pc_count; | |
4414 | q->count += p->count; | |
4415 | *pp = p->next; | |
4416 | break; | |
4417 | } | |
4418 | if (q == NULL) | |
4419 | pp = &p->next; | |
4420 | } | |
4421 | *pp = edir->dyn_relocs; | |
4422 | } | |
4423 | ||
65f38f15 AM |
4424 | edir->dyn_relocs = eind->dyn_relocs; |
4425 | eind->dyn_relocs = NULL; | |
4426 | } | |
65f38f15 | 4427 | |
6349e628 AM |
4428 | edir->is_func |= eind->is_func; |
4429 | edir->is_func_descriptor |= eind->is_func_descriptor; | |
58ac9f71 | 4430 | edir->tls_mask |= eind->tls_mask; |
b31867b6 AM |
4431 | if (eind->oh != NULL) |
4432 | edir->oh = ppc_follow_link (eind->oh); | |
6349e628 | 4433 | |
81848ca0 | 4434 | /* If called to transfer flags for a weakdef during processing |
f5385ebf | 4435 | of elf_adjust_dynamic_symbol, don't copy NON_GOT_REF. |
81848ca0 | 4436 | We clear it ourselves for ELIMINATE_COPY_RELOCS. */ |
f5385ebf AM |
4437 | if (!(ELIMINATE_COPY_RELOCS |
4438 | && eind->elf.root.type != bfd_link_hash_indirect | |
4439 | && edir->elf.dynamic_adjusted)) | |
4440 | edir->elf.non_got_ref |= eind->elf.non_got_ref; | |
81848ca0 | 4441 | |
f5385ebf AM |
4442 | edir->elf.ref_dynamic |= eind->elf.ref_dynamic; |
4443 | edir->elf.ref_regular |= eind->elf.ref_regular; | |
4444 | edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak; | |
4445 | edir->elf.needs_plt |= eind->elf.needs_plt; | |
6349e628 AM |
4446 | |
4447 | /* If we were called to copy over info for a weak sym, that's all. */ | |
4448 | if (eind->elf.root.type != bfd_link_hash_indirect) | |
4449 | return; | |
4450 | ||
81848ca0 AM |
4451 | /* Copy over got entries that we may have already seen to the |
4452 | symbol which just became indirect. */ | |
411e1bfb AM |
4453 | if (eind->elf.got.glist != NULL) |
4454 | { | |
4455 | if (edir->elf.got.glist != NULL) | |
4456 | { | |
4457 | struct got_entry **entp; | |
4458 | struct got_entry *ent; | |
4459 | ||
4460 | for (entp = &eind->elf.got.glist; (ent = *entp) != NULL; ) | |
4461 | { | |
4462 | struct got_entry *dent; | |
4463 | ||
4464 | for (dent = edir->elf.got.glist; dent != NULL; dent = dent->next) | |
4465 | if (dent->addend == ent->addend | |
e717da7e | 4466 | && dent->owner == ent->owner |
411e1bfb AM |
4467 | && dent->tls_type == ent->tls_type) |
4468 | { | |
4469 | dent->got.refcount += ent->got.refcount; | |
4470 | *entp = ent->next; | |
4471 | break; | |
4472 | } | |
4473 | if (dent == NULL) | |
4474 | entp = &ent->next; | |
4475 | } | |
4476 | *entp = edir->elf.got.glist; | |
4477 | } | |
4478 | ||
4479 | edir->elf.got.glist = eind->elf.got.glist; | |
4480 | eind->elf.got.glist = NULL; | |
4481 | } | |
4482 | ||
4483 | /* And plt entries. */ | |
40d16e0b | 4484 | move_plt_plist (eind, edir); |
411e1bfb | 4485 | |
fcfa13d2 | 4486 | if (eind->elf.dynindx != -1) |
411e1bfb | 4487 | { |
fcfa13d2 AM |
4488 | if (edir->elf.dynindx != -1) |
4489 | _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr, | |
4490 | edir->elf.dynstr_index); | |
411e1bfb AM |
4491 | edir->elf.dynindx = eind->elf.dynindx; |
4492 | edir->elf.dynstr_index = eind->elf.dynstr_index; | |
4493 | eind->elf.dynindx = -1; | |
4494 | eind->elf.dynstr_index = 0; | |
4495 | } | |
411e1bfb AM |
4496 | } |
4497 | ||
8387904d AM |
4498 | /* Find the function descriptor hash entry from the given function code |
4499 | hash entry FH. Link the entries via their OH fields. */ | |
4500 | ||
4501 | static struct ppc_link_hash_entry * | |
b31867b6 | 4502 | lookup_fdh (struct ppc_link_hash_entry *fh, struct ppc_link_hash_table *htab) |
8387904d AM |
4503 | { |
4504 | struct ppc_link_hash_entry *fdh = fh->oh; | |
4505 | ||
4506 | if (fdh == NULL) | |
4507 | { | |
4508 | const char *fd_name = fh->elf.root.root.string + 1; | |
4509 | ||
4510 | fdh = (struct ppc_link_hash_entry *) | |
4511 | elf_link_hash_lookup (&htab->elf, fd_name, FALSE, FALSE, FALSE); | |
b31867b6 AM |
4512 | if (fdh == NULL) |
4513 | return fdh; | |
4514 | ||
4515 | fdh->is_func_descriptor = 1; | |
4516 | fdh->oh = fh; | |
4517 | fh->is_func = 1; | |
4518 | fh->oh = fdh; | |
8387904d AM |
4519 | } |
4520 | ||
b31867b6 | 4521 | return ppc_follow_link (fdh); |
8387904d AM |
4522 | } |
4523 | ||
bb700d78 AM |
4524 | /* Make a fake function descriptor sym for the code sym FH. */ |
4525 | ||
4526 | static struct ppc_link_hash_entry * | |
4527 | make_fdh (struct bfd_link_info *info, | |
908b32fc | 4528 | struct ppc_link_hash_entry *fh) |
bb700d78 AM |
4529 | { |
4530 | bfd *abfd; | |
4531 | asymbol *newsym; | |
4532 | struct bfd_link_hash_entry *bh; | |
4533 | struct ppc_link_hash_entry *fdh; | |
4534 | ||
4535 | abfd = fh->elf.root.u.undef.abfd; | |
4536 | newsym = bfd_make_empty_symbol (abfd); | |
4537 | newsym->name = fh->elf.root.root.string + 1; | |
4538 | newsym->section = bfd_und_section_ptr; | |
4539 | newsym->value = 0; | |
908b32fc | 4540 | newsym->flags = BSF_WEAK; |
bb700d78 AM |
4541 | |
4542 | bh = NULL; | |
4543 | if (!_bfd_generic_link_add_one_symbol (info, abfd, newsym->name, | |
4544 | newsym->flags, newsym->section, | |
4545 | newsym->value, NULL, FALSE, FALSE, | |
4546 | &bh)) | |
4547 | return NULL; | |
4548 | ||
4549 | fdh = (struct ppc_link_hash_entry *) bh; | |
4550 | fdh->elf.non_elf = 0; | |
908b32fc AM |
4551 | fdh->fake = 1; |
4552 | fdh->is_func_descriptor = 1; | |
4553 | fdh->oh = fh; | |
4554 | fh->is_func = 1; | |
4555 | fh->oh = fdh; | |
bb700d78 AM |
4556 | return fdh; |
4557 | } | |
4558 | ||
8387904d AM |
4559 | /* Fix function descriptor symbols defined in .opd sections to be |
4560 | function type. */ | |
555cd476 AM |
4561 | |
4562 | static bfd_boolean | |
c16153ae | 4563 | ppc64_elf_add_symbol_hook (bfd *ibfd, |
e054468f | 4564 | struct bfd_link_info *info, |
555cd476 | 4565 | Elf_Internal_Sym *isym, |
b3fac117 | 4566 | const char **name ATTRIBUTE_UNUSED, |
555cd476 AM |
4567 | flagword *flags ATTRIBUTE_UNUSED, |
4568 | asection **sec, | |
4569 | bfd_vma *value ATTRIBUTE_UNUSED) | |
4570 | { | |
e054468f | 4571 | if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC) |
c16153ae L |
4572 | { |
4573 | if ((ibfd->flags & DYNAMIC) == 0) | |
4574 | elf_tdata (info->output_bfd)->has_ifunc_symbols = TRUE; | |
4575 | } | |
e054468f AM |
4576 | else if (ELF_ST_TYPE (isym->st_info) == STT_FUNC) |
4577 | ; | |
4578 | else if (*sec != NULL | |
70cc837d | 4579 | && strcmp ((*sec)->name, ".opd") == 0) |
555cd476 | 4580 | isym->st_info = ELF_ST_INFO (ELF_ST_BIND (isym->st_info), STT_FUNC); |
433817dd | 4581 | |
555cd476 AM |
4582 | return TRUE; |
4583 | } | |
4584 | ||
8387904d | 4585 | /* This function makes an old ABI object reference to ".bar" cause the |
908b32fc AM |
4586 | inclusion of a new ABI object archive that defines "bar". |
4587 | NAME is a symbol defined in an archive. Return a symbol in the hash | |
4588 | table that might be satisfied by the archive symbols. */ | |
8387904d AM |
4589 | |
4590 | static struct elf_link_hash_entry * | |
4591 | ppc64_elf_archive_symbol_lookup (bfd *abfd, | |
4592 | struct bfd_link_info *info, | |
4593 | const char *name) | |
4594 | { | |
4595 | struct elf_link_hash_entry *h; | |
4596 | char *dot_name; | |
4597 | size_t len; | |
4598 | ||
4599 | h = _bfd_elf_archive_symbol_lookup (abfd, info, name); | |
908b32fc AM |
4600 | if (h != NULL |
4601 | /* Don't return this sym if it is a fake function descriptor | |
4602 | created by add_symbol_adjust. */ | |
4603 | && !(h->root.type == bfd_link_hash_undefweak | |
4604 | && ((struct ppc_link_hash_entry *) h)->fake)) | |
8387904d AM |
4605 | return h; |
4606 | ||
4607 | if (name[0] == '.') | |
4608 | return h; | |
4609 | ||
4610 | len = strlen (name); | |
4611 | dot_name = bfd_alloc (abfd, len + 2); | |
4612 | if (dot_name == NULL) | |
4613 | return (struct elf_link_hash_entry *) 0 - 1; | |
4614 | dot_name[0] = '.'; | |
4615 | memcpy (dot_name + 1, name, len + 1); | |
4616 | h = _bfd_elf_archive_symbol_lookup (abfd, info, dot_name); | |
4617 | bfd_release (abfd, dot_name); | |
4618 | return h; | |
4619 | } | |
4620 | ||
4621 | /* This function satisfies all old ABI object references to ".bar" if a | |
99877b66 AM |
4622 | new ABI object defines "bar". Well, at least, undefined dot symbols |
4623 | are made weak. This stops later archive searches from including an | |
4624 | object if we already have a function descriptor definition. It also | |
35b0ce59 AM |
4625 | prevents the linker complaining about undefined symbols. |
4626 | We also check and correct mismatched symbol visibility here. The | |
4627 | most restrictive visibility of the function descriptor and the | |
4628 | function entry symbol is used. */ | |
8387904d AM |
4629 | |
4630 | static bfd_boolean | |
b3fac117 | 4631 | add_symbol_adjust (struct ppc_link_hash_entry *eh, struct bfd_link_info *info) |
8387904d | 4632 | { |
8387904d AM |
4633 | struct ppc_link_hash_table *htab; |
4634 | struct ppc_link_hash_entry *fdh; | |
4635 | ||
b3fac117 | 4636 | if (eh->elf.root.type == bfd_link_hash_indirect) |
8387904d AM |
4637 | return TRUE; |
4638 | ||
b3fac117 AM |
4639 | if (eh->elf.root.type == bfd_link_hash_warning) |
4640 | eh = (struct ppc_link_hash_entry *) eh->elf.root.u.i.link; | |
8387904d | 4641 | |
b3fac117 AM |
4642 | if (eh->elf.root.root.string[0] != '.') |
4643 | abort (); | |
8387904d | 4644 | |
b3fac117 | 4645 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
4646 | if (htab == NULL) |
4647 | return FALSE; | |
4648 | ||
b31867b6 AM |
4649 | fdh = lookup_fdh (eh, htab); |
4650 | if (fdh == NULL) | |
4651 | { | |
4652 | if (!info->relocatable | |
4653 | && (eh->elf.root.type == bfd_link_hash_undefined | |
4654 | || eh->elf.root.type == bfd_link_hash_undefweak) | |
4655 | && eh->elf.ref_regular) | |
4656 | { | |
4657 | /* Make an undefweak function descriptor sym, which is enough to | |
4658 | pull in an --as-needed shared lib, but won't cause link | |
4659 | errors. Archives are handled elsewhere. */ | |
4660 | fdh = make_fdh (info, eh); | |
4661 | if (fdh == NULL) | |
4662 | return FALSE; | |
4663 | fdh->elf.ref_regular = 1; | |
4664 | } | |
bb700d78 | 4665 | } |
b31867b6 | 4666 | else |
8387904d | 4667 | { |
35b0ce59 AM |
4668 | unsigned entry_vis = ELF_ST_VISIBILITY (eh->elf.other) - 1; |
4669 | unsigned descr_vis = ELF_ST_VISIBILITY (fdh->elf.other) - 1; | |
4670 | if (entry_vis < descr_vis) | |
4671 | fdh->elf.other += entry_vis - descr_vis; | |
4672 | else if (entry_vis > descr_vis) | |
4673 | eh->elf.other += descr_vis - entry_vis; | |
4674 | ||
e87d886e AM |
4675 | if ((fdh->elf.root.type == bfd_link_hash_defined |
4676 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
4677 | && eh->elf.root.type == bfd_link_hash_undefined) | |
35b0ce59 AM |
4678 | { |
4679 | eh->elf.root.type = bfd_link_hash_undefweak; | |
4680 | eh->was_undefined = 1; | |
4681 | htab->twiddled_syms = 1; | |
4682 | } | |
8387904d | 4683 | } |
99877b66 | 4684 | |
8387904d AM |
4685 | return TRUE; |
4686 | } | |
4687 | ||
b3fac117 AM |
4688 | /* Process list of dot-symbols we made in link_hash_newfunc. */ |
4689 | ||
8387904d | 4690 | static bfd_boolean |
7d9616d7 | 4691 | ppc64_elf_process_dot_syms (bfd *ibfd, struct bfd_link_info *info) |
8387904d | 4692 | { |
99877b66 | 4693 | struct ppc_link_hash_table *htab; |
b3fac117 | 4694 | struct ppc_link_hash_entry **p, *eh; |
433817dd | 4695 | |
0c8d6e5c | 4696 | if (!is_ppc64_elf (info->output_bfd)) |
35b0ce59 | 4697 | return TRUE; |
4dfe6ac6 NC |
4698 | htab = ppc_hash_table (info); |
4699 | if (htab == NULL) | |
4700 | return FALSE; | |
35b0ce59 | 4701 | |
0c8d6e5c | 4702 | if (is_ppc64_elf (ibfd)) |
b3fac117 AM |
4703 | { |
4704 | p = &htab->dot_syms; | |
4705 | while ((eh = *p) != NULL) | |
4706 | { | |
4707 | *p = NULL; | |
4708 | if (!add_symbol_adjust (eh, info)) | |
4709 | return FALSE; | |
4710 | p = &eh->u.next_dot_sym; | |
4711 | } | |
4712 | } | |
4713 | ||
4714 | /* Clear the list for non-ppc64 input files. */ | |
4715 | p = &htab->dot_syms; | |
4716 | while ((eh = *p) != NULL) | |
4717 | { | |
4718 | *p = NULL; | |
4719 | p = &eh->u.next_dot_sym; | |
4720 | } | |
99877b66 AM |
4721 | |
4722 | /* We need to fix the undefs list for any syms we have twiddled to | |
4723 | undef_weak. */ | |
4724 | if (htab->twiddled_syms) | |
4725 | { | |
77cfaee6 | 4726 | bfd_link_repair_undef_list (&htab->elf.root); |
99877b66 AM |
4727 | htab->twiddled_syms = 0; |
4728 | } | |
b3fac117 | 4729 | return TRUE; |
8387904d AM |
4730 | } |
4731 | ||
97fed1c9 JJ |
4732 | /* Undo hash table changes when an --as-needed input file is determined |
4733 | not to be needed. */ | |
4734 | ||
4735 | static bfd_boolean | |
4736 | ppc64_elf_as_needed_cleanup (bfd *ibfd ATTRIBUTE_UNUSED, | |
4737 | struct bfd_link_info *info) | |
4738 | { | |
4dfe6ac6 NC |
4739 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
4740 | ||
4741 | if (htab == NULL) | |
4742 | return FALSE; | |
4743 | ||
4744 | htab->dot_syms = NULL; | |
97fed1c9 JJ |
4745 | return TRUE; |
4746 | } | |
4747 | ||
e054468f | 4748 | static struct plt_entry ** |
4ce794b7 AM |
4749 | update_local_sym_info (bfd *abfd, Elf_Internal_Shdr *symtab_hdr, |
4750 | unsigned long r_symndx, bfd_vma r_addend, int tls_type) | |
411e1bfb AM |
4751 | { |
4752 | struct got_entry **local_got_ents = elf_local_got_ents (abfd); | |
e054468f | 4753 | struct plt_entry **local_plt; |
f961d9dd | 4754 | unsigned char *local_got_tls_masks; |
411e1bfb AM |
4755 | |
4756 | if (local_got_ents == NULL) | |
4757 | { | |
4758 | bfd_size_type size = symtab_hdr->sh_info; | |
4759 | ||
e054468f AM |
4760 | size *= (sizeof (*local_got_ents) |
4761 | + sizeof (*local_plt) | |
4762 | + sizeof (*local_got_tls_masks)); | |
4ce794b7 | 4763 | local_got_ents = bfd_zalloc (abfd, size); |
411e1bfb | 4764 | if (local_got_ents == NULL) |
e054468f | 4765 | return NULL; |
411e1bfb AM |
4766 | elf_local_got_ents (abfd) = local_got_ents; |
4767 | } | |
4768 | ||
e054468f | 4769 | if ((tls_type & (PLT_IFUNC | TLS_EXPLICIT)) == 0) |
411e1bfb AM |
4770 | { |
4771 | struct got_entry *ent; | |
4772 | ||
4773 | for (ent = local_got_ents[r_symndx]; ent != NULL; ent = ent->next) | |
e717da7e AM |
4774 | if (ent->addend == r_addend |
4775 | && ent->owner == abfd | |
4776 | && ent->tls_type == tls_type) | |
411e1bfb AM |
4777 | break; |
4778 | if (ent == NULL) | |
4779 | { | |
4780 | bfd_size_type amt = sizeof (*ent); | |
4ce794b7 | 4781 | ent = bfd_alloc (abfd, amt); |
411e1bfb AM |
4782 | if (ent == NULL) |
4783 | return FALSE; | |
4784 | ent->next = local_got_ents[r_symndx]; | |
4785 | ent->addend = r_addend; | |
e717da7e | 4786 | ent->owner = abfd; |
411e1bfb | 4787 | ent->tls_type = tls_type; |
927be08e | 4788 | ent->is_indirect = FALSE; |
411e1bfb AM |
4789 | ent->got.refcount = 0; |
4790 | local_got_ents[r_symndx] = ent; | |
4791 | } | |
4792 | ent->got.refcount += 1; | |
4793 | } | |
4794 | ||
e054468f | 4795 | local_plt = (struct plt_entry **) (local_got_ents + symtab_hdr->sh_info); |
f961d9dd | 4796 | local_got_tls_masks = (unsigned char *) (local_plt + symtab_hdr->sh_info); |
e7b938ca | 4797 | local_got_tls_masks[r_symndx] |= tls_type; |
e054468f AM |
4798 | |
4799 | return local_plt + r_symndx; | |
65f38f15 AM |
4800 | } |
4801 | ||
411e1bfb | 4802 | static bfd_boolean |
e054468f | 4803 | update_plt_info (bfd *abfd, struct plt_entry **plist, bfd_vma addend) |
1e2f5b6e | 4804 | { |
411e1bfb | 4805 | struct plt_entry *ent; |
1e2f5b6e | 4806 | |
e054468f | 4807 | for (ent = *plist; ent != NULL; ent = ent->next) |
411e1bfb AM |
4808 | if (ent->addend == addend) |
4809 | break; | |
4810 | if (ent == NULL) | |
1e2f5b6e | 4811 | { |
411e1bfb | 4812 | bfd_size_type amt = sizeof (*ent); |
4ce794b7 | 4813 | ent = bfd_alloc (abfd, amt); |
411e1bfb AM |
4814 | if (ent == NULL) |
4815 | return FALSE; | |
e054468f | 4816 | ent->next = *plist; |
411e1bfb AM |
4817 | ent->addend = addend; |
4818 | ent->plt.refcount = 0; | |
e054468f | 4819 | *plist = ent; |
1e2f5b6e | 4820 | } |
411e1bfb | 4821 | ent->plt.refcount += 1; |
b34976b6 | 4822 | return TRUE; |
1e2f5b6e AM |
4823 | } |
4824 | ||
e054468f AM |
4825 | static bfd_boolean |
4826 | is_branch_reloc (enum elf_ppc64_reloc_type r_type) | |
4827 | { | |
4828 | return (r_type == R_PPC64_REL24 | |
4829 | || r_type == R_PPC64_REL14 | |
4830 | || r_type == R_PPC64_REL14_BRTAKEN | |
4831 | || r_type == R_PPC64_REL14_BRNTAKEN | |
4832 | || r_type == R_PPC64_ADDR24 | |
4833 | || r_type == R_PPC64_ADDR14 | |
4834 | || r_type == R_PPC64_ADDR14_BRTAKEN | |
4835 | || r_type == R_PPC64_ADDR14_BRNTAKEN); | |
4836 | } | |
4837 | ||
5bd4f169 | 4838 | /* Look through the relocs for a section during the first phase, and |
65f38f15 | 4839 | calculate needed space in the global offset table, procedure |
5d1634d7 | 4840 | linkage table, and dynamic reloc sections. */ |
5bd4f169 | 4841 | |
b34976b6 | 4842 | static bfd_boolean |
4ce794b7 AM |
4843 | ppc64_elf_check_relocs (bfd *abfd, struct bfd_link_info *info, |
4844 | asection *sec, const Elf_Internal_Rela *relocs) | |
5bd4f169 | 4845 | { |
65f38f15 | 4846 | struct ppc_link_hash_table *htab; |
5bd4f169 | 4847 | Elf_Internal_Shdr *symtab_hdr; |
c7e2358a | 4848 | struct elf_link_hash_entry **sym_hashes; |
5bd4f169 AM |
4849 | const Elf_Internal_Rela *rel; |
4850 | const Elf_Internal_Rela *rel_end; | |
5bd4f169 | 4851 | asection *sreloc; |
1e2f5b6e | 4852 | asection **opd_sym_map; |
3a71aa26 | 4853 | struct elf_link_hash_entry *tga, *dottga; |
5bd4f169 | 4854 | |
1049f94e | 4855 | if (info->relocatable) |
b34976b6 | 4856 | return TRUE; |
5bd4f169 | 4857 | |
680a3378 AM |
4858 | /* Don't do anything special with non-loaded, non-alloced sections. |
4859 | In particular, any relocs in such sections should not affect GOT | |
4860 | and PLT reference counting (ie. we don't allow them to create GOT | |
4861 | or PLT entries), there's no possibility or desire to optimize TLS | |
4862 | relocs, and there's not much point in propagating relocs to shared | |
4863 | libs that the dynamic linker won't relocate. */ | |
4864 | if ((sec->flags & SEC_ALLOC) == 0) | |
4865 | return TRUE; | |
4866 | ||
0c8d6e5c | 4867 | BFD_ASSERT (is_ppc64_elf (abfd)); |
0ffa91dd | 4868 | |
65f38f15 | 4869 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
4870 | if (htab == NULL) |
4871 | return FALSE; | |
4872 | ||
3a71aa26 AM |
4873 | tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr", |
4874 | FALSE, FALSE, TRUE); | |
4875 | dottga = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr", | |
4876 | FALSE, FALSE, TRUE); | |
0ffa91dd | 4877 | symtab_hdr = &elf_symtab_hdr (abfd); |
5bd4f169 | 4878 | sym_hashes = elf_sym_hashes (abfd); |
5bd4f169 | 4879 | sreloc = NULL; |
1e2f5b6e | 4880 | opd_sym_map = NULL; |
70cc837d | 4881 | if (strcmp (sec->name, ".opd") == 0) |
1e2f5b6e AM |
4882 | { |
4883 | /* Garbage collection needs some extra help with .opd sections. | |
4884 | We don't want to necessarily keep everything referenced by | |
4885 | relocs in .opd, as that would keep all functions. Instead, | |
4886 | if we reference an .opd symbol (a function descriptor), we | |
4887 | want to keep the function code symbol's section. This is | |
4888 | easy for global symbols, but for local syms we need to keep | |
74f0fb50 | 4889 | information about the associated function section. */ |
1e2f5b6e AM |
4890 | bfd_size_type amt; |
4891 | ||
74f0fb50 | 4892 | amt = sec->size * sizeof (*opd_sym_map) / 8; |
4ce794b7 | 4893 | opd_sym_map = bfd_zalloc (abfd, amt); |
1e2f5b6e | 4894 | if (opd_sym_map == NULL) |
b34976b6 | 4895 | return FALSE; |
74f0fb50 | 4896 | ppc64_elf_section_data (sec)->u.opd.func_sec = opd_sym_map; |
7c8fe5c4 AM |
4897 | BFD_ASSERT (ppc64_elf_section_data (sec)->sec_type == sec_normal); |
4898 | ppc64_elf_section_data (sec)->sec_type = sec_opd; | |
1e2f5b6e | 4899 | } |
5bd4f169 | 4900 | |
82bd7b59 AM |
4901 | if (htab->sfpr == NULL |
4902 | && !create_linkage_sections (htab->elf.dynobj, info)) | |
b34976b6 | 4903 | return FALSE; |
82bd7b59 | 4904 | |
5bd4f169 AM |
4905 | rel_end = relocs + sec->reloc_count; |
4906 | for (rel = relocs; rel < rel_end; rel++) | |
4907 | { | |
4908 | unsigned long r_symndx; | |
4909 | struct elf_link_hash_entry *h; | |
04c9666a | 4910 | enum elf_ppc64_reloc_type r_type; |
727fc41e | 4911 | int tls_type; |
7c8fe5c4 | 4912 | struct _ppc64_elf_section_data *ppc64_sec; |
e054468f | 4913 | struct plt_entry **ifunc; |
5bd4f169 AM |
4914 | |
4915 | r_symndx = ELF64_R_SYM (rel->r_info); | |
4916 | if (r_symndx < symtab_hdr->sh_info) | |
4917 | h = NULL; | |
4918 | else | |
973a3492 L |
4919 | { |
4920 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
b31867b6 | 4921 | h = elf_follow_link (h); |
973a3492 | 4922 | } |
5bd4f169 | 4923 | |
727fc41e | 4924 | tls_type = 0; |
e054468f | 4925 | ifunc = NULL; |
25f23106 AM |
4926 | if (h != NULL) |
4927 | { | |
4928 | if (h->type == STT_GNU_IFUNC) | |
4929 | { | |
4930 | h->needs_plt = 1; | |
4931 | ifunc = &h->plt.plist; | |
4932 | } | |
4933 | } | |
4934 | else | |
4935 | { | |
4936 | Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache, | |
4937 | abfd, r_symndx); | |
4938 | if (isym == NULL) | |
4939 | return FALSE; | |
4940 | ||
4941 | if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC) | |
4942 | { | |
4943 | ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
4944 | rel->r_addend, PLT_IFUNC); | |
4945 | if (ifunc == NULL) | |
4946 | return FALSE; | |
4947 | } | |
4948 | } | |
4ce794b7 | 4949 | r_type = ELF64_R_TYPE (rel->r_info); |
e054468f AM |
4950 | if (is_branch_reloc (r_type)) |
4951 | { | |
4952 | if (h != NULL && (h == tga || h == dottga)) | |
4953 | { | |
4954 | if (rel != relocs | |
4955 | && (ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSGD | |
4956 | || ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSLD)) | |
4957 | /* We have a new-style __tls_get_addr call with a marker | |
4958 | reloc. */ | |
4959 | ; | |
4960 | else | |
4961 | /* Mark this section as having an old-style call. */ | |
4962 | sec->has_tls_get_addr_call = 1; | |
4963 | } | |
727fc41e | 4964 | |
e054468f | 4965 | /* STT_GNU_IFUNC symbols must have a PLT entry. */ |
e054468f AM |
4966 | if (ifunc != NULL |
4967 | && !update_plt_info (abfd, ifunc, rel->r_addend)) | |
4968 | return FALSE; | |
4969 | } | |
727fc41e | 4970 | |
a33d1f77 | 4971 | switch (r_type) |
5bd4f169 | 4972 | { |
727fc41e AM |
4973 | case R_PPC64_TLSGD: |
4974 | case R_PPC64_TLSLD: | |
4975 | /* These special tls relocs tie a call to __tls_get_addr with | |
4976 | its parameter symbol. */ | |
4977 | break; | |
4978 | ||
411e1bfb AM |
4979 | case R_PPC64_GOT_TLSLD16: |
4980 | case R_PPC64_GOT_TLSLD16_LO: | |
4981 | case R_PPC64_GOT_TLSLD16_HI: | |
4982 | case R_PPC64_GOT_TLSLD16_HA: | |
951fd09b | 4983 | tls_type = TLS_TLS | TLS_LD; |
411e1bfb AM |
4984 | goto dogottls; |
4985 | ||
4986 | case R_PPC64_GOT_TLSGD16: | |
4987 | case R_PPC64_GOT_TLSGD16_LO: | |
4988 | case R_PPC64_GOT_TLSGD16_HI: | |
4989 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b | 4990 | tls_type = TLS_TLS | TLS_GD; |
411e1bfb AM |
4991 | goto dogottls; |
4992 | ||
4993 | case R_PPC64_GOT_TPREL16_DS: | |
4994 | case R_PPC64_GOT_TPREL16_LO_DS: | |
4995 | case R_PPC64_GOT_TPREL16_HI: | |
4996 | case R_PPC64_GOT_TPREL16_HA: | |
1d483afe | 4997 | if (!info->executable) |
411e1bfb AM |
4998 | info->flags |= DF_STATIC_TLS; |
4999 | tls_type = TLS_TLS | TLS_TPREL; | |
5000 | goto dogottls; | |
5001 | ||
5002 | case R_PPC64_GOT_DTPREL16_DS: | |
5003 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
5004 | case R_PPC64_GOT_DTPREL16_HI: | |
5005 | case R_PPC64_GOT_DTPREL16_HA: | |
5006 | tls_type = TLS_TLS | TLS_DTPREL; | |
5007 | dogottls: | |
5008 | sec->has_tls_reloc = 1; | |
5009 | /* Fall thru */ | |
5010 | ||
5bd4f169 | 5011 | case R_PPC64_GOT16: |
5bd4f169 | 5012 | case R_PPC64_GOT16_DS: |
65f38f15 AM |
5013 | case R_PPC64_GOT16_HA: |
5014 | case R_PPC64_GOT16_HI: | |
5015 | case R_PPC64_GOT16_LO: | |
5bd4f169 | 5016 | case R_PPC64_GOT16_LO_DS: |
65f38f15 | 5017 | /* This symbol requires a global offset table entry. */ |
4c52953f | 5018 | sec->has_toc_reloc = 1; |
33c0ec9d AM |
5019 | if (r_type == R_PPC64_GOT_TLSLD16 |
5020 | || r_type == R_PPC64_GOT_TLSGD16 | |
5021 | || r_type == R_PPC64_GOT_TPREL16_DS | |
5022 | || r_type == R_PPC64_GOT_DTPREL16_DS | |
5023 | || r_type == R_PPC64_GOT16 | |
5024 | || r_type == R_PPC64_GOT16_DS) | |
5025 | { | |
5026 | htab->do_multi_toc = 1; | |
d77c8a4b | 5027 | ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1; |
33c0ec9d AM |
5028 | } |
5029 | ||
e717da7e AM |
5030 | if (ppc64_elf_tdata (abfd)->got == NULL |
5031 | && !create_got_section (abfd, info)) | |
b34976b6 | 5032 | return FALSE; |
5bd4f169 AM |
5033 | |
5034 | if (h != NULL) | |
5035 | { | |
411e1bfb AM |
5036 | struct ppc_link_hash_entry *eh; |
5037 | struct got_entry *ent; | |
65f38f15 | 5038 | |
411e1bfb AM |
5039 | eh = (struct ppc_link_hash_entry *) h; |
5040 | for (ent = eh->elf.got.glist; ent != NULL; ent = ent->next) | |
5041 | if (ent->addend == rel->r_addend | |
e717da7e | 5042 | && ent->owner == abfd |
411e1bfb AM |
5043 | && ent->tls_type == tls_type) |
5044 | break; | |
5045 | if (ent == NULL) | |
5bd4f169 | 5046 | { |
411e1bfb | 5047 | bfd_size_type amt = sizeof (*ent); |
4ce794b7 | 5048 | ent = bfd_alloc (abfd, amt); |
411e1bfb | 5049 | if (ent == NULL) |
b34976b6 | 5050 | return FALSE; |
411e1bfb AM |
5051 | ent->next = eh->elf.got.glist; |
5052 | ent->addend = rel->r_addend; | |
e717da7e | 5053 | ent->owner = abfd; |
411e1bfb | 5054 | ent->tls_type = tls_type; |
927be08e | 5055 | ent->is_indirect = FALSE; |
411e1bfb AM |
5056 | ent->got.refcount = 0; |
5057 | eh->elf.got.glist = ent; | |
5bd4f169 | 5058 | } |
411e1bfb | 5059 | ent->got.refcount += 1; |
e7b938ca | 5060 | eh->tls_mask |= tls_type; |
5bd4f169 | 5061 | } |
411e1bfb AM |
5062 | else |
5063 | /* This is a global offset table entry for a local symbol. */ | |
5064 | if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
5065 | rel->r_addend, tls_type)) | |
5066 | return FALSE; | |
5bd4f169 AM |
5067 | break; |
5068 | ||
5bd4f169 | 5069 | case R_PPC64_PLT16_HA: |
65f38f15 AM |
5070 | case R_PPC64_PLT16_HI: |
5071 | case R_PPC64_PLT16_LO: | |
5072 | case R_PPC64_PLT32: | |
5073 | case R_PPC64_PLT64: | |
5bd4f169 | 5074 | /* This symbol requires a procedure linkage table entry. We |
3fad3c7c AM |
5075 | actually build the entry in adjust_dynamic_symbol, |
5076 | because this might be a case of linking PIC code without | |
5077 | linking in any dynamic objects, in which case we don't | |
5078 | need to generate a procedure linkage table after all. */ | |
5bd4f169 AM |
5079 | if (h == NULL) |
5080 | { | |
5081 | /* It does not make sense to have a procedure linkage | |
3fad3c7c | 5082 | table entry for a local symbol. */ |
5bd4f169 | 5083 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 5084 | return FALSE; |
5bd4f169 | 5085 | } |
411e1bfb | 5086 | else |
e054468f AM |
5087 | { |
5088 | if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend)) | |
5089 | return FALSE; | |
5090 | h->needs_plt = 1; | |
5091 | if (h->root.root.string[0] == '.' | |
5092 | && h->root.root.string[1] != '\0') | |
5093 | ((struct ppc_link_hash_entry *) h)->is_func = 1; | |
5094 | } | |
5bd4f169 AM |
5095 | break; |
5096 | ||
5097 | /* The following relocations don't need to propagate the | |
5098 | relocation if linking a shared object since they are | |
5099 | section relative. */ | |
5100 | case R_PPC64_SECTOFF: | |
5101 | case R_PPC64_SECTOFF_LO: | |
5102 | case R_PPC64_SECTOFF_HI: | |
5103 | case R_PPC64_SECTOFF_HA: | |
5104 | case R_PPC64_SECTOFF_DS: | |
5105 | case R_PPC64_SECTOFF_LO_DS: | |
411e1bfb AM |
5106 | case R_PPC64_DTPREL16: |
5107 | case R_PPC64_DTPREL16_LO: | |
5108 | case R_PPC64_DTPREL16_HI: | |
5109 | case R_PPC64_DTPREL16_HA: | |
5110 | case R_PPC64_DTPREL16_DS: | |
5111 | case R_PPC64_DTPREL16_LO_DS: | |
5112 | case R_PPC64_DTPREL16_HIGHER: | |
5113 | case R_PPC64_DTPREL16_HIGHERA: | |
5114 | case R_PPC64_DTPREL16_HIGHEST: | |
5115 | case R_PPC64_DTPREL16_HIGHESTA: | |
5bd4f169 AM |
5116 | break; |
5117 | ||
ad8e1ba5 | 5118 | /* Nor do these. */ |
25f23106 AM |
5119 | case R_PPC64_REL16: |
5120 | case R_PPC64_REL16_LO: | |
5121 | case R_PPC64_REL16_HI: | |
5122 | case R_PPC64_REL16_HA: | |
5123 | break; | |
5124 | ||
ad8e1ba5 | 5125 | case R_PPC64_TOC16: |
33c0ec9d AM |
5126 | case R_PPC64_TOC16_DS: |
5127 | htab->do_multi_toc = 1; | |
d77c8a4b | 5128 | ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1; |
ad8e1ba5 AM |
5129 | case R_PPC64_TOC16_LO: |
5130 | case R_PPC64_TOC16_HI: | |
5131 | case R_PPC64_TOC16_HA: | |
ad8e1ba5 | 5132 | case R_PPC64_TOC16_LO_DS: |
4c52953f | 5133 | sec->has_toc_reloc = 1; |
ad8e1ba5 AM |
5134 | break; |
5135 | ||
5bd4f169 AM |
5136 | /* This relocation describes the C++ object vtable hierarchy. |
5137 | Reconstruct it for later use during GC. */ | |
5138 | case R_PPC64_GNU_VTINHERIT: | |
c152c796 | 5139 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
b34976b6 | 5140 | return FALSE; |
5bd4f169 AM |
5141 | break; |
5142 | ||
5143 | /* This relocation describes which C++ vtable entries are actually | |
5144 | used. Record for later use during GC. */ | |
5145 | case R_PPC64_GNU_VTENTRY: | |
d17e0c6e JB |
5146 | BFD_ASSERT (h != NULL); |
5147 | if (h != NULL | |
5148 | && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) | |
b34976b6 | 5149 | return FALSE; |
5bd4f169 AM |
5150 | break; |
5151 | ||
721956f4 AM |
5152 | case R_PPC64_REL14: |
5153 | case R_PPC64_REL14_BRTAKEN: | |
5154 | case R_PPC64_REL14_BRNTAKEN: | |
220c76dd AM |
5155 | { |
5156 | asection *dest = NULL; | |
5157 | ||
5158 | /* Heuristic: If jumping outside our section, chances are | |
5159 | we are going to need a stub. */ | |
5160 | if (h != NULL) | |
5161 | { | |
5162 | /* If the sym is weak it may be overridden later, so | |
5163 | don't assume we know where a weak sym lives. */ | |
5164 | if (h->root.type == bfd_link_hash_defined) | |
5165 | dest = h->root.u.def.section; | |
5166 | } | |
5167 | else | |
87d72d41 AM |
5168 | { |
5169 | Elf_Internal_Sym *isym; | |
5170 | ||
5171 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, | |
5172 | abfd, r_symndx); | |
5173 | if (isym == NULL) | |
5174 | return FALSE; | |
5175 | ||
5176 | dest = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
5177 | } | |
5178 | ||
220c76dd | 5179 | if (dest != sec) |
7c8fe5c4 | 5180 | ppc64_elf_section_data (sec)->has_14bit_branch = 1; |
220c76dd | 5181 | } |
721956f4 AM |
5182 | /* Fall through. */ |
5183 | ||
5d1634d7 | 5184 | case R_PPC64_REL24: |
e054468f | 5185 | if (h != NULL && ifunc == NULL) |
5d1634d7 AM |
5186 | { |
5187 | /* We may need a .plt entry if the function this reloc | |
5188 | refers to is in a shared lib. */ | |
e054468f | 5189 | if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend)) |
411e1bfb | 5190 | return FALSE; |
e054468f AM |
5191 | h->needs_plt = 1; |
5192 | if (h->root.root.string[0] == '.' | |
5193 | && h->root.root.string[1] != '\0') | |
5194 | ((struct ppc_link_hash_entry *) h)->is_func = 1; | |
3a71aa26 | 5195 | if (h == tga || h == dottga) |
411e1bfb | 5196 | sec->has_tls_reloc = 1; |
411e1bfb AM |
5197 | } |
5198 | break; | |
5199 | ||
5200 | case R_PPC64_TPREL64: | |
5201 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_TPREL; | |
1d483afe | 5202 | if (!info->executable) |
411e1bfb AM |
5203 | info->flags |= DF_STATIC_TLS; |
5204 | goto dotlstoc; | |
5205 | ||
5206 | case R_PPC64_DTPMOD64: | |
5207 | if (rel + 1 < rel_end | |
5208 | && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64) | |
5209 | && rel[1].r_offset == rel->r_offset + 8) | |
951fd09b | 5210 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_GD; |
411e1bfb | 5211 | else |
951fd09b | 5212 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_LD; |
411e1bfb AM |
5213 | goto dotlstoc; |
5214 | ||
5215 | case R_PPC64_DTPREL64: | |
5216 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_DTPREL; | |
5217 | if (rel != relocs | |
5218 | && rel[-1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPMOD64) | |
5219 | && rel[-1].r_offset == rel->r_offset - 8) | |
5220 | /* This is the second reloc of a dtpmod, dtprel pair. | |
5221 | Don't mark with TLS_DTPREL. */ | |
5222 | goto dodyn; | |
5223 | ||
5224 | dotlstoc: | |
5225 | sec->has_tls_reloc = 1; | |
5226 | if (h != NULL) | |
5227 | { | |
5228 | struct ppc_link_hash_entry *eh; | |
5229 | eh = (struct ppc_link_hash_entry *) h; | |
e7b938ca | 5230 | eh->tls_mask |= tls_type; |
411e1bfb AM |
5231 | } |
5232 | else | |
5233 | if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
5234 | rel->r_addend, tls_type)) | |
5235 | return FALSE; | |
5236 | ||
7c8fe5c4 AM |
5237 | ppc64_sec = ppc64_elf_section_data (sec); |
5238 | if (ppc64_sec->sec_type != sec_toc) | |
411e1bfb | 5239 | { |
3a71aa26 AM |
5240 | bfd_size_type amt; |
5241 | ||
e7b938ca | 5242 | /* One extra to simplify get_tls_mask. */ |
3a71aa26 AM |
5243 | amt = sec->size * sizeof (unsigned) / 8 + sizeof (unsigned); |
5244 | ppc64_sec->u.toc.symndx = bfd_zalloc (abfd, amt); | |
5245 | if (ppc64_sec->u.toc.symndx == NULL) | |
5246 | return FALSE; | |
5247 | amt = sec->size * sizeof (bfd_vma) / 8; | |
5248 | ppc64_sec->u.toc.add = bfd_zalloc (abfd, amt); | |
5249 | if (ppc64_sec->u.toc.add == NULL) | |
411e1bfb | 5250 | return FALSE; |
7c8fe5c4 AM |
5251 | BFD_ASSERT (ppc64_sec->sec_type == sec_normal); |
5252 | ppc64_sec->sec_type = sec_toc; | |
411e1bfb AM |
5253 | } |
5254 | BFD_ASSERT (rel->r_offset % 8 == 0); | |
3a71aa26 AM |
5255 | ppc64_sec->u.toc.symndx[rel->r_offset / 8] = r_symndx; |
5256 | ppc64_sec->u.toc.add[rel->r_offset / 8] = rel->r_addend; | |
951fd09b AM |
5257 | |
5258 | /* Mark the second slot of a GD or LD entry. | |
5259 | -1 to indicate GD and -2 to indicate LD. */ | |
5260 | if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_GD)) | |
3a71aa26 | 5261 | ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -1; |
951fd09b | 5262 | else if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_LD)) |
3a71aa26 | 5263 | ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -2; |
411e1bfb AM |
5264 | goto dodyn; |
5265 | ||
5266 | case R_PPC64_TPREL16: | |
5267 | case R_PPC64_TPREL16_LO: | |
5268 | case R_PPC64_TPREL16_HI: | |
5269 | case R_PPC64_TPREL16_HA: | |
5270 | case R_PPC64_TPREL16_DS: | |
5271 | case R_PPC64_TPREL16_LO_DS: | |
5272 | case R_PPC64_TPREL16_HIGHER: | |
5273 | case R_PPC64_TPREL16_HIGHERA: | |
5274 | case R_PPC64_TPREL16_HIGHEST: | |
5275 | case R_PPC64_TPREL16_HIGHESTA: | |
5276 | if (info->shared) | |
5277 | { | |
1d483afe AM |
5278 | if (!info->executable) |
5279 | info->flags |= DF_STATIC_TLS; | |
411e1bfb | 5280 | goto dodyn; |
5d1634d7 AM |
5281 | } |
5282 | break; | |
5283 | ||
e86ce104 | 5284 | case R_PPC64_ADDR64: |
1e2f5b6e | 5285 | if (opd_sym_map != NULL |
1e2f5b6e | 5286 | && rel + 1 < rel_end |
4ce794b7 | 5287 | && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC) |
1e2f5b6e | 5288 | { |
8387904d AM |
5289 | if (h != NULL) |
5290 | { | |
5291 | if (h->root.root.string[0] == '.' | |
5292 | && h->root.root.string[1] != 0 | |
b31867b6 | 5293 | && lookup_fdh ((struct ppc_link_hash_entry *) h, htab)) |
8387904d AM |
5294 | ; |
5295 | else | |
5296 | ((struct ppc_link_hash_entry *) h)->is_func = 1; | |
5297 | } | |
5298 | else | |
5299 | { | |
5300 | asection *s; | |
87d72d41 | 5301 | Elf_Internal_Sym *isym; |
1e2f5b6e | 5302 | |
87d72d41 AM |
5303 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, |
5304 | abfd, r_symndx); | |
5305 | if (isym == NULL) | |
8387904d | 5306 | return FALSE; |
87d72d41 AM |
5307 | |
5308 | s = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
5309 | if (s != NULL && s != sec) | |
3f764659 | 5310 | opd_sym_map[rel->r_offset / 8] = s; |
8387904d | 5311 | } |
1e2f5b6e | 5312 | } |
e86ce104 AM |
5313 | /* Fall through. */ |
5314 | ||
04c9666a | 5315 | case R_PPC64_REL30: |
5bd4f169 | 5316 | case R_PPC64_REL32: |
04c9666a | 5317 | case R_PPC64_REL64: |
65f38f15 AM |
5318 | case R_PPC64_ADDR14: |
5319 | case R_PPC64_ADDR14_BRNTAKEN: | |
5320 | case R_PPC64_ADDR14_BRTAKEN: | |
5321 | case R_PPC64_ADDR16: | |
5322 | case R_PPC64_ADDR16_DS: | |
5323 | case R_PPC64_ADDR16_HA: | |
5324 | case R_PPC64_ADDR16_HI: | |
5325 | case R_PPC64_ADDR16_HIGHER: | |
5326 | case R_PPC64_ADDR16_HIGHERA: | |
5327 | case R_PPC64_ADDR16_HIGHEST: | |
5328 | case R_PPC64_ADDR16_HIGHESTA: | |
5329 | case R_PPC64_ADDR16_LO: | |
5330 | case R_PPC64_ADDR16_LO_DS: | |
5331 | case R_PPC64_ADDR24: | |
65f38f15 | 5332 | case R_PPC64_ADDR32: |
65f38f15 AM |
5333 | case R_PPC64_UADDR16: |
5334 | case R_PPC64_UADDR32: | |
5335 | case R_PPC64_UADDR64: | |
5bd4f169 | 5336 | case R_PPC64_TOC: |
81848ca0 AM |
5337 | if (h != NULL && !info->shared) |
5338 | /* We may need a copy reloc. */ | |
f5385ebf | 5339 | h->non_got_ref = 1; |
81848ca0 | 5340 | |
41bd81ab | 5341 | /* Don't propagate .opd relocs. */ |
1e2f5b6e | 5342 | if (NO_OPD_RELOCS && opd_sym_map != NULL) |
e86ce104 | 5343 | break; |
e86ce104 | 5344 | |
65f38f15 AM |
5345 | /* If we are creating a shared library, and this is a reloc |
5346 | against a global symbol, or a non PC relative reloc | |
5347 | against a local symbol, then we need to copy the reloc | |
5348 | into the shared library. However, if we are linking with | |
5349 | -Bsymbolic, we do not need to copy a reloc against a | |
5350 | global symbol which is defined in an object we are | |
5351 | including in the link (i.e., DEF_REGULAR is set). At | |
5352 | this point we have not seen all the input files, so it is | |
5353 | possible that DEF_REGULAR is not set now but will be set | |
5354 | later (it is never cleared). In case of a weak definition, | |
5355 | DEF_REGULAR may be cleared later by a strong definition in | |
5356 | a shared library. We account for that possibility below by | |
f4656909 | 5357 | storing information in the dyn_relocs field of the hash |
65f38f15 AM |
5358 | table entry. A similar situation occurs when creating |
5359 | shared libraries and symbol visibility changes render the | |
5360 | symbol local. | |
5361 | ||
5362 | If on the other hand, we are creating an executable, we | |
5363 | may need to keep relocations for symbols satisfied by a | |
5364 | dynamic library if we manage to avoid copy relocs for the | |
5365 | symbol. */ | |
411e1bfb | 5366 | dodyn: |
65f38f15 | 5367 | if ((info->shared |
1d483afe | 5368 | && (must_be_dyn_reloc (info, r_type) |
65f38f15 AM |
5369 | || (h != NULL |
5370 | && (! info->symbolic | |
5371 | || h->root.type == bfd_link_hash_defweak | |
f5385ebf | 5372 | || !h->def_regular)))) |
f4656909 AM |
5373 | || (ELIMINATE_COPY_RELOCS |
5374 | && !info->shared | |
65f38f15 AM |
5375 | && h != NULL |
5376 | && (h->root.type == bfd_link_hash_defweak | |
25f23106 AM |
5377 | || !h->def_regular)) |
5378 | || (!info->shared | |
5379 | && ifunc != NULL)) | |
5bd4f169 | 5380 | { |
ec338859 AM |
5381 | struct ppc_dyn_relocs *p; |
5382 | struct ppc_dyn_relocs **head; | |
5383 | ||
65f38f15 AM |
5384 | /* We must copy these reloc types into the output file. |
5385 | Create a reloc section in dynobj and make room for | |
5386 | this reloc. */ | |
5bd4f169 AM |
5387 | if (sreloc == NULL) |
5388 | { | |
83bac4b0 NC |
5389 | sreloc = _bfd_elf_make_dynamic_reloc_section |
5390 | (sec, htab->elf.dynobj, 3, abfd, /*rela?*/ TRUE); | |
65f38f15 | 5391 | |
5bd4f169 | 5392 | if (sreloc == NULL) |
83bac4b0 | 5393 | return FALSE; |
5bd4f169 AM |
5394 | } |
5395 | ||
65f38f15 AM |
5396 | /* If this is a global symbol, we count the number of |
5397 | relocations we need for this symbol. */ | |
5398 | if (h != NULL) | |
5399 | { | |
ec338859 | 5400 | head = &((struct ppc_link_hash_entry *) h)->dyn_relocs; |
65f38f15 AM |
5401 | } |
5402 | else | |
5403 | { | |
ec338859 AM |
5404 | /* Track dynamic relocs needed for local syms too. |
5405 | We really need local syms available to do this | |
5406 | easily. Oh well. */ | |
ec338859 | 5407 | asection *s; |
6edfbbad | 5408 | void *vpp; |
87d72d41 | 5409 | Elf_Internal_Sym *isym; |
6edfbbad | 5410 | |
87d72d41 AM |
5411 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, |
5412 | abfd, r_symndx); | |
5413 | if (isym == NULL) | |
b34976b6 | 5414 | return FALSE; |
ec338859 | 5415 | |
87d72d41 AM |
5416 | s = bfd_section_from_elf_index (abfd, isym->st_shndx); |
5417 | if (s == NULL) | |
5418 | s = sec; | |
5419 | ||
6edfbbad DJ |
5420 | vpp = &elf_section_data (s)->local_dynrel; |
5421 | head = (struct ppc_dyn_relocs **) vpp; | |
65f38f15 | 5422 | } |
ec338859 AM |
5423 | |
5424 | p = *head; | |
5425 | if (p == NULL || p->sec != sec) | |
5426 | { | |
4ce794b7 | 5427 | p = bfd_alloc (htab->elf.dynobj, sizeof *p); |
ec338859 | 5428 | if (p == NULL) |
b34976b6 | 5429 | return FALSE; |
ec338859 AM |
5430 | p->next = *head; |
5431 | *head = p; | |
5432 | p->sec = sec; | |
5433 | p->count = 0; | |
5434 | p->pc_count = 0; | |
5435 | } | |
5436 | ||
5437 | p->count += 1; | |
1d483afe | 5438 | if (!must_be_dyn_reloc (info, r_type)) |
ec338859 | 5439 | p->pc_count += 1; |
65f38f15 | 5440 | } |
5bd4f169 | 5441 | break; |
65f38f15 AM |
5442 | |
5443 | default: | |
96e0dda4 | 5444 | break; |
5bd4f169 AM |
5445 | } |
5446 | } | |
5447 | ||
b34976b6 | 5448 | return TRUE; |
5bd4f169 AM |
5449 | } |
5450 | ||
8387904d AM |
5451 | /* OFFSET in OPD_SEC specifies a function descriptor. Return the address |
5452 | of the code entry point, and its section. */ | |
5453 | ||
5454 | static bfd_vma | |
5455 | opd_entry_value (asection *opd_sec, | |
5456 | bfd_vma offset, | |
5457 | asection **code_sec, | |
5458 | bfd_vma *code_off) | |
5459 | { | |
5460 | bfd *opd_bfd = opd_sec->owner; | |
8860955f | 5461 | Elf_Internal_Rela *relocs; |
8387904d | 5462 | Elf_Internal_Rela *lo, *hi, *look; |
645ea6a9 | 5463 | bfd_vma val; |
8387904d | 5464 | |
4b85d634 AM |
5465 | /* No relocs implies we are linking a --just-symbols object. */ |
5466 | if (opd_sec->reloc_count == 0) | |
5467 | { | |
4b85d634 AM |
5468 | if (!bfd_get_section_contents (opd_bfd, opd_sec, &val, offset, 8)) |
5469 | return (bfd_vma) -1; | |
3b36f7e6 | 5470 | |
4b85d634 AM |
5471 | if (code_sec != NULL) |
5472 | { | |
5473 | asection *sec, *likely = NULL; | |
5474 | for (sec = opd_bfd->sections; sec != NULL; sec = sec->next) | |
5475 | if (sec->vma <= val | |
5476 | && (sec->flags & SEC_LOAD) != 0 | |
5477 | && (sec->flags & SEC_ALLOC) != 0) | |
5478 | likely = sec; | |
5479 | if (likely != NULL) | |
5480 | { | |
5481 | *code_sec = likely; | |
5482 | if (code_off != NULL) | |
5483 | *code_off = val - likely->vma; | |
5484 | } | |
5485 | } | |
5486 | return val; | |
5487 | } | |
5488 | ||
0c8d6e5c | 5489 | BFD_ASSERT (is_ppc64_elf (opd_bfd)); |
0ffa91dd | 5490 | |
8860955f AM |
5491 | relocs = ppc64_elf_tdata (opd_bfd)->opd_relocs; |
5492 | if (relocs == NULL) | |
5493 | relocs = _bfd_elf_link_read_relocs (opd_bfd, opd_sec, NULL, NULL, TRUE); | |
645ea6a9 | 5494 | |
8387904d | 5495 | /* Go find the opd reloc at the sym address. */ |
8860955f | 5496 | lo = relocs; |
8387904d AM |
5497 | BFD_ASSERT (lo != NULL); |
5498 | hi = lo + opd_sec->reloc_count - 1; /* ignore last reloc */ | |
645ea6a9 | 5499 | val = (bfd_vma) -1; |
8387904d AM |
5500 | while (lo < hi) |
5501 | { | |
5502 | look = lo + (hi - lo) / 2; | |
5503 | if (look->r_offset < offset) | |
5504 | lo = look + 1; | |
5505 | else if (look->r_offset > offset) | |
5506 | hi = look; | |
5507 | else | |
5508 | { | |
0ffa91dd NC |
5509 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (opd_bfd); |
5510 | ||
8387904d AM |
5511 | if (ELF64_R_TYPE (look->r_info) == R_PPC64_ADDR64 |
5512 | && ELF64_R_TYPE ((look + 1)->r_info) == R_PPC64_TOC) | |
5513 | { | |
5514 | unsigned long symndx = ELF64_R_SYM (look->r_info); | |
8387904d AM |
5515 | asection *sec; |
5516 | ||
5517 | if (symndx < symtab_hdr->sh_info) | |
5518 | { | |
5519 | Elf_Internal_Sym *sym; | |
5520 | ||
5521 | sym = (Elf_Internal_Sym *) symtab_hdr->contents; | |
5522 | if (sym == NULL) | |
5523 | { | |
5524 | sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr, | |
5525 | symtab_hdr->sh_info, | |
5526 | 0, NULL, NULL, NULL); | |
5527 | if (sym == NULL) | |
645ea6a9 | 5528 | break; |
8387904d AM |
5529 | symtab_hdr->contents = (bfd_byte *) sym; |
5530 | } | |
5531 | ||
5532 | sym += symndx; | |
5533 | val = sym->st_value; | |
cb33740c | 5534 | sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx); |
8387904d AM |
5535 | BFD_ASSERT ((sec->flags & SEC_MERGE) == 0); |
5536 | } | |
5537 | else | |
5538 | { | |
5539 | struct elf_link_hash_entry **sym_hashes; | |
5540 | struct elf_link_hash_entry *rh; | |
5541 | ||
5542 | sym_hashes = elf_sym_hashes (opd_bfd); | |
5543 | rh = sym_hashes[symndx - symtab_hdr->sh_info]; | |
b31867b6 | 5544 | rh = elf_follow_link (rh); |
8387904d AM |
5545 | BFD_ASSERT (rh->root.type == bfd_link_hash_defined |
5546 | || rh->root.type == bfd_link_hash_defweak); | |
5547 | val = rh->root.u.def.value; | |
5548 | sec = rh->root.u.def.section; | |
5549 | } | |
5550 | val += look->r_addend; | |
5551 | if (code_off != NULL) | |
5552 | *code_off = val; | |
5553 | if (code_sec != NULL) | |
5554 | *code_sec = sec; | |
5555 | if (sec != NULL && sec->output_section != NULL) | |
5556 | val += sec->output_section->vma + sec->output_offset; | |
8387904d AM |
5557 | } |
5558 | break; | |
5559 | } | |
5560 | } | |
645ea6a9 | 5561 | |
645ea6a9 | 5562 | return val; |
8387904d AM |
5563 | } |
5564 | ||
854b41e7 AM |
5565 | /* Return true if symbol is defined in a regular object file. */ |
5566 | ||
5567 | static bfd_boolean | |
5568 | is_static_defined (struct elf_link_hash_entry *h) | |
5569 | { | |
5570 | return ((h->root.type == bfd_link_hash_defined | |
5571 | || h->root.type == bfd_link_hash_defweak) | |
5572 | && h->root.u.def.section != NULL | |
5573 | && h->root.u.def.section->output_section != NULL); | |
5574 | } | |
5575 | ||
b31867b6 AM |
5576 | /* If FDH is a function descriptor symbol, return the associated code |
5577 | entry symbol if it is defined. Return NULL otherwise. */ | |
5578 | ||
5579 | static struct ppc_link_hash_entry * | |
5580 | defined_code_entry (struct ppc_link_hash_entry *fdh) | |
5581 | { | |
5582 | if (fdh->is_func_descriptor) | |
5583 | { | |
5584 | struct ppc_link_hash_entry *fh = ppc_follow_link (fdh->oh); | |
5585 | if (fh->elf.root.type == bfd_link_hash_defined | |
5586 | || fh->elf.root.type == bfd_link_hash_defweak) | |
5587 | return fh; | |
5588 | } | |
5589 | return NULL; | |
5590 | } | |
5591 | ||
5592 | /* If FH is a function code entry symbol, return the associated | |
5593 | function descriptor symbol if it is defined. Return NULL otherwise. */ | |
5594 | ||
5595 | static struct ppc_link_hash_entry * | |
5596 | defined_func_desc (struct ppc_link_hash_entry *fh) | |
5597 | { | |
5598 | if (fh->oh != NULL | |
5599 | && fh->oh->is_func_descriptor) | |
5600 | { | |
5601 | struct ppc_link_hash_entry *fdh = ppc_follow_link (fh->oh); | |
5602 | if (fdh->elf.root.type == bfd_link_hash_defined | |
5603 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
5604 | return fdh; | |
5605 | } | |
5606 | return NULL; | |
5607 | } | |
5608 | ||
74f0fb50 AM |
5609 | /* Mark all our entry sym sections, both opd and code section. */ |
5610 | ||
5611 | static void | |
5612 | ppc64_elf_gc_keep (struct bfd_link_info *info) | |
5613 | { | |
5614 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
5615 | struct bfd_sym_chain *sym; | |
5616 | ||
4dfe6ac6 NC |
5617 | if (htab == NULL) |
5618 | return; | |
5619 | ||
74f0fb50 AM |
5620 | for (sym = info->gc_sym_list; sym != NULL; sym = sym->next) |
5621 | { | |
b31867b6 | 5622 | struct ppc_link_hash_entry *eh, *fh; |
74f0fb50 AM |
5623 | asection *sec; |
5624 | ||
5625 | eh = (struct ppc_link_hash_entry *) | |
b31867b6 | 5626 | elf_link_hash_lookup (&htab->elf, sym->name, FALSE, FALSE, TRUE); |
74f0fb50 AM |
5627 | if (eh == NULL) |
5628 | continue; | |
5629 | if (eh->elf.root.type != bfd_link_hash_defined | |
5630 | && eh->elf.root.type != bfd_link_hash_defweak) | |
5631 | continue; | |
5632 | ||
b31867b6 AM |
5633 | fh = defined_code_entry (eh); |
5634 | if (fh != NULL) | |
74f0fb50 | 5635 | { |
b31867b6 | 5636 | sec = fh->elf.root.u.def.section; |
74f0fb50 AM |
5637 | sec->flags |= SEC_KEEP; |
5638 | } | |
5639 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL | |
5640 | && opd_entry_value (eh->elf.root.u.def.section, | |
5641 | eh->elf.root.u.def.value, | |
5642 | &sec, NULL) != (bfd_vma) -1) | |
5643 | sec->flags |= SEC_KEEP; | |
5644 | ||
5645 | sec = eh->elf.root.u.def.section; | |
5646 | sec->flags |= SEC_KEEP; | |
5647 | } | |
5648 | } | |
5649 | ||
64d03ab5 AM |
5650 | /* Mark sections containing dynamically referenced symbols. When |
5651 | building shared libraries, we must assume that any visible symbol is | |
5652 | referenced. */ | |
5653 | ||
5654 | static bfd_boolean | |
5655 | ppc64_elf_gc_mark_dynamic_ref (struct elf_link_hash_entry *h, void *inf) | |
5656 | { | |
5657 | struct bfd_link_info *info = (struct bfd_link_info *) inf; | |
5658 | struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h; | |
b31867b6 | 5659 | struct ppc_link_hash_entry *fdh; |
64d03ab5 AM |
5660 | |
5661 | if (eh->elf.root.type == bfd_link_hash_warning) | |
5662 | eh = (struct ppc_link_hash_entry *) eh->elf.root.u.i.link; | |
5663 | ||
5664 | /* Dynamic linking info is on the func descriptor sym. */ | |
b31867b6 AM |
5665 | fdh = defined_func_desc (eh); |
5666 | if (fdh != NULL) | |
5667 | eh = fdh; | |
64d03ab5 AM |
5668 | |
5669 | if ((eh->elf.root.type == bfd_link_hash_defined | |
5670 | || eh->elf.root.type == bfd_link_hash_defweak) | |
5671 | && (eh->elf.ref_dynamic | |
5672 | || (!info->executable | |
5673 | && eh->elf.def_regular | |
5674 | && ELF_ST_VISIBILITY (eh->elf.other) != STV_INTERNAL | |
5675 | && ELF_ST_VISIBILITY (eh->elf.other) != STV_HIDDEN))) | |
5676 | { | |
5677 | asection *code_sec; | |
b31867b6 | 5678 | struct ppc_link_hash_entry *fh; |
64d03ab5 AM |
5679 | |
5680 | eh->elf.root.u.def.section->flags |= SEC_KEEP; | |
5681 | ||
5682 | /* Function descriptor syms cause the associated | |
5683 | function code sym section to be marked. */ | |
b31867b6 AM |
5684 | fh = defined_code_entry (eh); |
5685 | if (fh != NULL) | |
5686 | { | |
5687 | code_sec = fh->elf.root.u.def.section; | |
5688 | code_sec->flags |= SEC_KEEP; | |
5689 | } | |
64d03ab5 AM |
5690 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL |
5691 | && opd_entry_value (eh->elf.root.u.def.section, | |
5692 | eh->elf.root.u.def.value, | |
5693 | &code_sec, NULL) != (bfd_vma) -1) | |
5694 | code_sec->flags |= SEC_KEEP; | |
5695 | } | |
5696 | ||
5697 | return TRUE; | |
5698 | } | |
5699 | ||
5bd4f169 AM |
5700 | /* Return the section that should be marked against GC for a given |
5701 | relocation. */ | |
5702 | ||
5703 | static asection * | |
4ce794b7 | 5704 | ppc64_elf_gc_mark_hook (asection *sec, |
fb34365b | 5705 | struct bfd_link_info *info, |
4ce794b7 AM |
5706 | Elf_Internal_Rela *rel, |
5707 | struct elf_link_hash_entry *h, | |
5708 | Elf_Internal_Sym *sym) | |
5bd4f169 | 5709 | { |
ccfa59ea AM |
5710 | asection *rsec; |
5711 | ||
ccfa59ea AM |
5712 | /* Syms return NULL if we're marking .opd, so we avoid marking all |
5713 | function sections, as all functions are referenced in .opd. */ | |
5714 | rsec = NULL; | |
5715 | if (get_opd_info (sec) != NULL) | |
5716 | return rsec; | |
1e2f5b6e | 5717 | |
5bd4f169 AM |
5718 | if (h != NULL) |
5719 | { | |
04c9666a | 5720 | enum elf_ppc64_reloc_type r_type; |
b31867b6 | 5721 | struct ppc_link_hash_entry *eh, *fh, *fdh; |
a33d1f77 | 5722 | |
4ce794b7 | 5723 | r_type = ELF64_R_TYPE (rel->r_info); |
a33d1f77 | 5724 | switch (r_type) |
5bd4f169 AM |
5725 | { |
5726 | case R_PPC64_GNU_VTINHERIT: | |
5727 | case R_PPC64_GNU_VTENTRY: | |
5728 | break; | |
5729 | ||
5730 | default: | |
5731 | switch (h->root.type) | |
5732 | { | |
5733 | case bfd_link_hash_defined: | |
5734 | case bfd_link_hash_defweak: | |
ccfa59ea | 5735 | eh = (struct ppc_link_hash_entry *) h; |
b31867b6 AM |
5736 | fdh = defined_func_desc (eh); |
5737 | if (fdh != NULL) | |
5738 | eh = fdh; | |
1e2f5b6e AM |
5739 | |
5740 | /* Function descriptor syms cause the associated | |
5741 | function code sym section to be marked. */ | |
b31867b6 AM |
5742 | fh = defined_code_entry (eh); |
5743 | if (fh != NULL) | |
ccfa59ea AM |
5744 | { |
5745 | /* They also mark their opd section. */ | |
74f0fb50 | 5746 | eh->elf.root.u.def.section->gc_mark = 1; |
ccfa59ea | 5747 | |
b31867b6 | 5748 | rsec = fh->elf.root.u.def.section; |
ccfa59ea | 5749 | } |
8387904d AM |
5750 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL |
5751 | && opd_entry_value (eh->elf.root.u.def.section, | |
5752 | eh->elf.root.u.def.value, | |
5753 | &rsec, NULL) != (bfd_vma) -1) | |
74f0fb50 | 5754 | eh->elf.root.u.def.section->gc_mark = 1; |
ccfa59ea | 5755 | else |
1e2f5b6e AM |
5756 | rsec = h->root.u.def.section; |
5757 | break; | |
5bd4f169 AM |
5758 | |
5759 | case bfd_link_hash_common: | |
1e2f5b6e AM |
5760 | rsec = h->root.u.c.p->section; |
5761 | break; | |
5bd4f169 AM |
5762 | |
5763 | default: | |
fb34365b | 5764 | return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); |
5bd4f169 AM |
5765 | } |
5766 | } | |
5767 | } | |
5768 | else | |
5769 | { | |
74f0fb50 | 5770 | struct _opd_sec_data *opd; |
1e2f5b6e AM |
5771 | |
5772 | rsec = bfd_section_from_elf_index (sec->owner, sym->st_shndx); | |
74f0fb50 AM |
5773 | opd = get_opd_info (rsec); |
5774 | if (opd != NULL && opd->func_sec != NULL) | |
ccfa59ea | 5775 | { |
74f0fb50 | 5776 | rsec->gc_mark = 1; |
ccfa59ea | 5777 | |
74f0fb50 | 5778 | rsec = opd->func_sec[(sym->st_value + rel->r_addend) / 8]; |
ccfa59ea | 5779 | } |
5bd4f169 AM |
5780 | } |
5781 | ||
1e2f5b6e | 5782 | return rsec; |
5bd4f169 AM |
5783 | } |
5784 | ||
65f38f15 AM |
5785 | /* Update the .got, .plt. and dynamic reloc reference counts for the |
5786 | section being removed. */ | |
5bd4f169 | 5787 | |
b34976b6 | 5788 | static bfd_boolean |
4ce794b7 AM |
5789 | ppc64_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info, |
5790 | asection *sec, const Elf_Internal_Rela *relocs) | |
5bd4f169 | 5791 | { |
411e1bfb | 5792 | struct ppc_link_hash_table *htab; |
5bd4f169 AM |
5793 | Elf_Internal_Shdr *symtab_hdr; |
5794 | struct elf_link_hash_entry **sym_hashes; | |
411e1bfb | 5795 | struct got_entry **local_got_ents; |
5bd4f169 | 5796 | const Elf_Internal_Rela *rel, *relend; |
5bd4f169 | 5797 | |
7dda2462 TG |
5798 | if (info->relocatable) |
5799 | return TRUE; | |
5800 | ||
680a3378 AM |
5801 | if ((sec->flags & SEC_ALLOC) == 0) |
5802 | return TRUE; | |
5803 | ||
ec338859 AM |
5804 | elf_section_data (sec)->local_dynrel = NULL; |
5805 | ||
411e1bfb | 5806 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
5807 | if (htab == NULL) |
5808 | return FALSE; | |
5809 | ||
0ffa91dd | 5810 | symtab_hdr = &elf_symtab_hdr (abfd); |
5bd4f169 | 5811 | sym_hashes = elf_sym_hashes (abfd); |
411e1bfb | 5812 | local_got_ents = elf_local_got_ents (abfd); |
5bd4f169 AM |
5813 | |
5814 | relend = relocs + sec->reloc_count; | |
5815 | for (rel = relocs; rel < relend; rel++) | |
a33d1f77 AM |
5816 | { |
5817 | unsigned long r_symndx; | |
04c9666a | 5818 | enum elf_ppc64_reloc_type r_type; |
58ac9f71 | 5819 | struct elf_link_hash_entry *h = NULL; |
f961d9dd | 5820 | unsigned char tls_type = 0; |
5bd4f169 | 5821 | |
a33d1f77 | 5822 | r_symndx = ELF64_R_SYM (rel->r_info); |
4ce794b7 | 5823 | r_type = ELF64_R_TYPE (rel->r_info); |
58ac9f71 AM |
5824 | if (r_symndx >= symtab_hdr->sh_info) |
5825 | { | |
5826 | struct ppc_link_hash_entry *eh; | |
5827 | struct ppc_dyn_relocs **pp; | |
5828 | struct ppc_dyn_relocs *p; | |
5829 | ||
5830 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
b31867b6 | 5831 | h = elf_follow_link (h); |
58ac9f71 AM |
5832 | eh = (struct ppc_link_hash_entry *) h; |
5833 | ||
5834 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next) | |
5835 | if (p->sec == sec) | |
5836 | { | |
5837 | /* Everything must go for SEC. */ | |
5838 | *pp = p->next; | |
5839 | break; | |
5840 | } | |
5841 | } | |
5842 | ||
e054468f AM |
5843 | if (is_branch_reloc (r_type)) |
5844 | { | |
5845 | struct plt_entry **ifunc = NULL; | |
5846 | if (h != NULL) | |
5847 | { | |
5848 | if (h->type == STT_GNU_IFUNC) | |
5849 | ifunc = &h->plt.plist; | |
5850 | } | |
5851 | else if (local_got_ents != NULL) | |
5852 | { | |
5853 | struct plt_entry **local_plt = (struct plt_entry **) | |
5854 | (local_got_ents + symtab_hdr->sh_info); | |
f961d9dd | 5855 | unsigned char *local_got_tls_masks = (unsigned char *) |
e054468f AM |
5856 | (local_plt + symtab_hdr->sh_info); |
5857 | if ((local_got_tls_masks[r_symndx] & PLT_IFUNC) != 0) | |
5858 | ifunc = local_plt + r_symndx; | |
5859 | } | |
5860 | if (ifunc != NULL) | |
5861 | { | |
5862 | struct plt_entry *ent; | |
5863 | ||
5864 | for (ent = *ifunc; ent != NULL; ent = ent->next) | |
5865 | if (ent->addend == rel->r_addend) | |
5866 | break; | |
5867 | if (ent == NULL) | |
5868 | abort (); | |
5869 | if (ent->plt.refcount > 0) | |
5870 | ent->plt.refcount -= 1; | |
5871 | continue; | |
5872 | } | |
5873 | } | |
5874 | ||
a33d1f77 AM |
5875 | switch (r_type) |
5876 | { | |
411e1bfb AM |
5877 | case R_PPC64_GOT_TLSLD16: |
5878 | case R_PPC64_GOT_TLSLD16_LO: | |
5879 | case R_PPC64_GOT_TLSLD16_HI: | |
5880 | case R_PPC64_GOT_TLSLD16_HA: | |
951fd09b | 5881 | tls_type = TLS_TLS | TLS_LD; |
411e1bfb AM |
5882 | goto dogot; |
5883 | ||
5884 | case R_PPC64_GOT_TLSGD16: | |
5885 | case R_PPC64_GOT_TLSGD16_LO: | |
5886 | case R_PPC64_GOT_TLSGD16_HI: | |
5887 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b | 5888 | tls_type = TLS_TLS | TLS_GD; |
411e1bfb AM |
5889 | goto dogot; |
5890 | ||
5891 | case R_PPC64_GOT_TPREL16_DS: | |
5892 | case R_PPC64_GOT_TPREL16_LO_DS: | |
5893 | case R_PPC64_GOT_TPREL16_HI: | |
5894 | case R_PPC64_GOT_TPREL16_HA: | |
5895 | tls_type = TLS_TLS | TLS_TPREL; | |
5896 | goto dogot; | |
5897 | ||
5898 | case R_PPC64_GOT_DTPREL16_DS: | |
5899 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
5900 | case R_PPC64_GOT_DTPREL16_HI: | |
5901 | case R_PPC64_GOT_DTPREL16_HA: | |
5902 | tls_type = TLS_TLS | TLS_DTPREL; | |
5903 | goto dogot; | |
5904 | ||
a33d1f77 AM |
5905 | case R_PPC64_GOT16: |
5906 | case R_PPC64_GOT16_DS: | |
5907 | case R_PPC64_GOT16_HA: | |
5908 | case R_PPC64_GOT16_HI: | |
5909 | case R_PPC64_GOT16_LO: | |
5910 | case R_PPC64_GOT16_LO_DS: | |
411e1bfb AM |
5911 | dogot: |
5912 | { | |
5913 | struct got_entry *ent; | |
5914 | ||
58ac9f71 AM |
5915 | if (h != NULL) |
5916 | ent = h->got.glist; | |
411e1bfb AM |
5917 | else |
5918 | ent = local_got_ents[r_symndx]; | |
5919 | ||
5920 | for (; ent != NULL; ent = ent->next) | |
5921 | if (ent->addend == rel->r_addend | |
e717da7e | 5922 | && ent->owner == abfd |
411e1bfb AM |
5923 | && ent->tls_type == tls_type) |
5924 | break; | |
5925 | if (ent == NULL) | |
5926 | abort (); | |
5927 | if (ent->got.refcount > 0) | |
5928 | ent->got.refcount -= 1; | |
5929 | } | |
a33d1f77 | 5930 | break; |
65f38f15 | 5931 | |
a33d1f77 AM |
5932 | case R_PPC64_PLT16_HA: |
5933 | case R_PPC64_PLT16_HI: | |
5934 | case R_PPC64_PLT16_LO: | |
5935 | case R_PPC64_PLT32: | |
5936 | case R_PPC64_PLT64: | |
721956f4 AM |
5937 | case R_PPC64_REL14: |
5938 | case R_PPC64_REL14_BRNTAKEN: | |
5939 | case R_PPC64_REL14_BRTAKEN: | |
5d1634d7 | 5940 | case R_PPC64_REL24: |
58ac9f71 | 5941 | if (h != NULL) |
5d1634d7 | 5942 | { |
411e1bfb AM |
5943 | struct plt_entry *ent; |
5944 | ||
411e1bfb AM |
5945 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) |
5946 | if (ent->addend == rel->r_addend) | |
5947 | break; | |
7c6c1722 | 5948 | if (ent != NULL && ent->plt.refcount > 0) |
411e1bfb | 5949 | ent->plt.refcount -= 1; |
5d1634d7 | 5950 | } |
e86ce104 | 5951 | break; |
5d1634d7 | 5952 | |
a33d1f77 AM |
5953 | default: |
5954 | break; | |
5955 | } | |
5956 | } | |
b34976b6 | 5957 | return TRUE; |
5bd4f169 AM |
5958 | } |
5959 | ||
deb0e272 AM |
5960 | /* The maximum size of .sfpr. */ |
5961 | #define SFPR_MAX (218*4) | |
5962 | ||
5963 | struct sfpr_def_parms | |
5964 | { | |
699733f6 AM |
5965 | const char name[12]; |
5966 | unsigned char lo, hi; | |
deb0e272 AM |
5967 | bfd_byte * (*write_ent) (bfd *, bfd_byte *, int); |
5968 | bfd_byte * (*write_tail) (bfd *, bfd_byte *, int); | |
5969 | }; | |
5970 | ||
5971 | /* Auto-generate _save*, _rest* functions in .sfpr. */ | |
5972 | ||
4dfe6ac6 | 5973 | static bfd_boolean |
deb0e272 AM |
5974 | sfpr_define (struct bfd_link_info *info, const struct sfpr_def_parms *parm) |
5975 | { | |
5976 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
5977 | unsigned int i; | |
5978 | size_t len = strlen (parm->name); | |
5979 | bfd_boolean writing = FALSE; | |
699733f6 | 5980 | char sym[16]; |
deb0e272 | 5981 | |
4dfe6ac6 NC |
5982 | if (htab == NULL) |
5983 | return FALSE; | |
5984 | ||
deb0e272 AM |
5985 | memcpy (sym, parm->name, len); |
5986 | sym[len + 2] = 0; | |
5987 | ||
5988 | for (i = parm->lo; i <= parm->hi; i++) | |
5989 | { | |
5990 | struct elf_link_hash_entry *h; | |
5991 | ||
5992 | sym[len + 0] = i / 10 + '0'; | |
5993 | sym[len + 1] = i % 10 + '0'; | |
5994 | h = elf_link_hash_lookup (&htab->elf, sym, FALSE, FALSE, TRUE); | |
5995 | if (h != NULL | |
f5385ebf | 5996 | && !h->def_regular) |
deb0e272 AM |
5997 | { |
5998 | h->root.type = bfd_link_hash_defined; | |
5999 | h->root.u.def.section = htab->sfpr; | |
6000 | h->root.u.def.value = htab->sfpr->size; | |
6001 | h->type = STT_FUNC; | |
f5385ebf | 6002 | h->def_regular = 1; |
deb0e272 AM |
6003 | _bfd_elf_link_hash_hide_symbol (info, h, TRUE); |
6004 | writing = TRUE; | |
6005 | if (htab->sfpr->contents == NULL) | |
6006 | { | |
6007 | htab->sfpr->contents = bfd_alloc (htab->elf.dynobj, SFPR_MAX); | |
6008 | if (htab->sfpr->contents == NULL) | |
6009 | return FALSE; | |
6010 | } | |
6011 | } | |
6012 | if (writing) | |
6013 | { | |
6014 | bfd_byte *p = htab->sfpr->contents + htab->sfpr->size; | |
6015 | if (i != parm->hi) | |
6016 | p = (*parm->write_ent) (htab->elf.dynobj, p, i); | |
6017 | else | |
6018 | p = (*parm->write_tail) (htab->elf.dynobj, p, i); | |
6019 | htab->sfpr->size = p - htab->sfpr->contents; | |
6020 | } | |
6021 | } | |
6022 | ||
6023 | return TRUE; | |
6024 | } | |
6025 | ||
6026 | static bfd_byte * | |
6027 | savegpr0 (bfd *abfd, bfd_byte *p, int r) | |
6028 | { | |
6029 | bfd_put_32 (abfd, STD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
6030 | return p + 4; | |
6031 | } | |
6032 | ||
6033 | static bfd_byte * | |
6034 | savegpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
6035 | { | |
6036 | p = savegpr0 (abfd, p, r); | |
6037 | bfd_put_32 (abfd, STD_R0_0R1 + 16, p); | |
6038 | p = p + 4; | |
6039 | bfd_put_32 (abfd, BLR, p); | |
6040 | return p + 4; | |
6041 | } | |
6042 | ||
6043 | static bfd_byte * | |
6044 | restgpr0 (bfd *abfd, bfd_byte *p, int r) | |
6045 | { | |
6046 | bfd_put_32 (abfd, LD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
6047 | return p + 4; | |
6048 | } | |
6049 | ||
6050 | static bfd_byte * | |
6051 | restgpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
6052 | { | |
6053 | bfd_put_32 (abfd, LD_R0_0R1 + 16, p); | |
6054 | p = p + 4; | |
6055 | p = restgpr0 (abfd, p, r); | |
6056 | bfd_put_32 (abfd, MTLR_R0, p); | |
6057 | p = p + 4; | |
6058 | if (r == 29) | |
6059 | { | |
6060 | p = restgpr0 (abfd, p, 30); | |
6061 | p = restgpr0 (abfd, p, 31); | |
6062 | } | |
6063 | bfd_put_32 (abfd, BLR, p); | |
6064 | return p + 4; | |
6065 | } | |
6066 | ||
6067 | static bfd_byte * | |
6068 | savegpr1 (bfd *abfd, bfd_byte *p, int r) | |
6069 | { | |
6070 | bfd_put_32 (abfd, STD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
6071 | return p + 4; | |
6072 | } | |
6073 | ||
6074 | static bfd_byte * | |
6075 | savegpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
6076 | { | |
6077 | p = savegpr1 (abfd, p, r); | |
6078 | bfd_put_32 (abfd, BLR, p); | |
6079 | return p + 4; | |
6080 | } | |
6081 | ||
6082 | static bfd_byte * | |
6083 | restgpr1 (bfd *abfd, bfd_byte *p, int r) | |
6084 | { | |
6085 | bfd_put_32 (abfd, LD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
6086 | return p + 4; | |
6087 | } | |
6088 | ||
6089 | static bfd_byte * | |
6090 | restgpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
6091 | { | |
6092 | p = restgpr1 (abfd, p, r); | |
6093 | bfd_put_32 (abfd, BLR, p); | |
6094 | return p + 4; | |
6095 | } | |
6096 | ||
6097 | static bfd_byte * | |
6098 | savefpr (bfd *abfd, bfd_byte *p, int r) | |
6099 | { | |
6100 | bfd_put_32 (abfd, STFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
6101 | return p + 4; | |
6102 | } | |
6103 | ||
6104 | static bfd_byte * | |
6105 | savefpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
6106 | { | |
6107 | p = savefpr (abfd, p, r); | |
6108 | bfd_put_32 (abfd, STD_R0_0R1 + 16, p); | |
6109 | p = p + 4; | |
6110 | bfd_put_32 (abfd, BLR, p); | |
6111 | return p + 4; | |
6112 | } | |
6113 | ||
6114 | static bfd_byte * | |
6115 | restfpr (bfd *abfd, bfd_byte *p, int r) | |
6116 | { | |
6117 | bfd_put_32 (abfd, LFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
6118 | return p + 4; | |
6119 | } | |
6120 | ||
6121 | static bfd_byte * | |
6122 | restfpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
6123 | { | |
6124 | bfd_put_32 (abfd, LD_R0_0R1 + 16, p); | |
6125 | p = p + 4; | |
6126 | p = restfpr (abfd, p, r); | |
6127 | bfd_put_32 (abfd, MTLR_R0, p); | |
6128 | p = p + 4; | |
6129 | if (r == 29) | |
6130 | { | |
6131 | p = restfpr (abfd, p, 30); | |
6132 | p = restfpr (abfd, p, 31); | |
6133 | } | |
6134 | bfd_put_32 (abfd, BLR, p); | |
6135 | return p + 4; | |
6136 | } | |
6137 | ||
6138 | static bfd_byte * | |
6139 | savefpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
6140 | { | |
6141 | p = savefpr (abfd, p, r); | |
6142 | bfd_put_32 (abfd, BLR, p); | |
6143 | return p + 4; | |
6144 | } | |
6145 | ||
6146 | static bfd_byte * | |
6147 | restfpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
6148 | { | |
6149 | p = restfpr (abfd, p, r); | |
6150 | bfd_put_32 (abfd, BLR, p); | |
6151 | return p + 4; | |
6152 | } | |
6153 | ||
6154 | static bfd_byte * | |
6155 | savevr (bfd *abfd, bfd_byte *p, int r) | |
6156 | { | |
6157 | bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p); | |
6158 | p = p + 4; | |
6159 | bfd_put_32 (abfd, STVX_VR0_R12_R0 + (r << 21), p); | |
6160 | return p + 4; | |
6161 | } | |
6162 | ||
6163 | static bfd_byte * | |
6164 | savevr_tail (bfd *abfd, bfd_byte *p, int r) | |
6165 | { | |
6166 | p = savevr (abfd, p, r); | |
6167 | bfd_put_32 (abfd, BLR, p); | |
6168 | return p + 4; | |
6169 | } | |
6170 | ||
6171 | static bfd_byte * | |
6172 | restvr (bfd *abfd, bfd_byte *p, int r) | |
6173 | { | |
6174 | bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p); | |
6175 | p = p + 4; | |
6176 | bfd_put_32 (abfd, LVX_VR0_R12_R0 + (r << 21), p); | |
6177 | return p + 4; | |
6178 | } | |
6179 | ||
6180 | static bfd_byte * | |
6181 | restvr_tail (bfd *abfd, bfd_byte *p, int r) | |
6182 | { | |
6183 | p = restvr (abfd, p, r); | |
6184 | bfd_put_32 (abfd, BLR, p); | |
6185 | return p + 4; | |
6186 | } | |
6187 | ||
e86ce104 AM |
6188 | /* Called via elf_link_hash_traverse to transfer dynamic linking |
6189 | information on function code symbol entries to their corresponding | |
6190 | function descriptor symbol entries. */ | |
deb0e272 | 6191 | |
b34976b6 | 6192 | static bfd_boolean |
4ce794b7 | 6193 | func_desc_adjust (struct elf_link_hash_entry *h, void *inf) |
5bd4f169 | 6194 | { |
e86ce104 | 6195 | struct bfd_link_info *info; |
65f38f15 | 6196 | struct ppc_link_hash_table *htab; |
411e1bfb | 6197 | struct plt_entry *ent; |
50bc7936 AM |
6198 | struct ppc_link_hash_entry *fh; |
6199 | struct ppc_link_hash_entry *fdh; | |
6200 | bfd_boolean force_local; | |
5bd4f169 | 6201 | |
50bc7936 AM |
6202 | fh = (struct ppc_link_hash_entry *) h; |
6203 | if (fh->elf.root.type == bfd_link_hash_indirect) | |
b34976b6 | 6204 | return TRUE; |
e86ce104 | 6205 | |
50bc7936 AM |
6206 | if (fh->elf.root.type == bfd_link_hash_warning) |
6207 | fh = (struct ppc_link_hash_entry *) fh->elf.root.u.i.link; | |
e92d460e | 6208 | |
4ce794b7 | 6209 | info = inf; |
65f38f15 | 6210 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
6211 | if (htab == NULL) |
6212 | return FALSE; | |
5bd4f169 | 6213 | |
c09bdfe5 AM |
6214 | /* Resolve undefined references to dot-symbols as the value |
6215 | in the function descriptor, if we have one in a regular object. | |
6216 | This is to satisfy cases like ".quad .foo". Calls to functions | |
6217 | in dynamic objects are handled elsewhere. */ | |
6218 | if (fh->elf.root.type == bfd_link_hash_undefweak | |
6219 | && fh->was_undefined | |
b31867b6 AM |
6220 | && (fdh = defined_func_desc (fh)) != NULL |
6221 | && get_opd_info (fdh->elf.root.u.def.section) != NULL | |
6222 | && opd_entry_value (fdh->elf.root.u.def.section, | |
6223 | fdh->elf.root.u.def.value, | |
c09bdfe5 AM |
6224 | &fh->elf.root.u.def.section, |
6225 | &fh->elf.root.u.def.value) != (bfd_vma) -1) | |
6226 | { | |
b31867b6 | 6227 | fh->elf.root.type = fdh->elf.root.type; |
f5385ebf | 6228 | fh->elf.forced_local = 1; |
b31867b6 AM |
6229 | fh->elf.def_regular = fdh->elf.def_regular; |
6230 | fh->elf.def_dynamic = fdh->elf.def_dynamic; | |
c09bdfe5 AM |
6231 | } |
6232 | ||
e86ce104 AM |
6233 | /* If this is a function code symbol, transfer dynamic linking |
6234 | information to the function descriptor symbol. */ | |
50bc7936 | 6235 | if (!fh->is_func) |
b34976b6 | 6236 | return TRUE; |
e86ce104 | 6237 | |
50bc7936 | 6238 | for (ent = fh->elf.plt.plist; ent != NULL; ent = ent->next) |
411e1bfb AM |
6239 | if (ent->plt.refcount > 0) |
6240 | break; | |
50bc7936 AM |
6241 | if (ent == NULL |
6242 | || fh->elf.root.root.string[0] != '.' | |
6243 | || fh->elf.root.root.string[1] == '\0') | |
6244 | return TRUE; | |
5bd4f169 | 6245 | |
50bc7936 AM |
6246 | /* Find the corresponding function descriptor symbol. Create it |
6247 | as undefined if necessary. */ | |
5bd4f169 | 6248 | |
b31867b6 | 6249 | fdh = lookup_fdh (fh, htab); |
50bc7936 | 6250 | if (fdh == NULL |
df131623 | 6251 | && !info->executable |
50bc7936 AM |
6252 | && (fh->elf.root.type == bfd_link_hash_undefined |
6253 | || fh->elf.root.type == bfd_link_hash_undefweak)) | |
6254 | { | |
908b32fc | 6255 | fdh = make_fdh (info, fh); |
bb700d78 AM |
6256 | if (fdh == NULL) |
6257 | return FALSE; | |
50bc7936 | 6258 | } |
648cca2c | 6259 | |
908b32fc | 6260 | /* Fake function descriptors are made undefweak. If the function |
433817dd AM |
6261 | code symbol is strong undefined, make the fake sym the same. |
6262 | If the function code symbol is defined, then force the fake | |
6263 | descriptor local; We can't support overriding of symbols in a | |
6264 | shared library on a fake descriptor. */ | |
908b32fc AM |
6265 | |
6266 | if (fdh != NULL | |
6267 | && fdh->fake | |
433817dd | 6268 | && fdh->elf.root.type == bfd_link_hash_undefweak) |
908b32fc | 6269 | { |
433817dd AM |
6270 | if (fh->elf.root.type == bfd_link_hash_undefined) |
6271 | { | |
6272 | fdh->elf.root.type = bfd_link_hash_undefined; | |
6273 | bfd_link_add_undef (&htab->elf.root, &fdh->elf.root); | |
6274 | } | |
6275 | else if (fh->elf.root.type == bfd_link_hash_defined | |
6276 | || fh->elf.root.type == bfd_link_hash_defweak) | |
6277 | { | |
6278 | _bfd_elf_link_hash_hide_symbol (info, &fdh->elf, TRUE); | |
6279 | } | |
908b32fc AM |
6280 | } |
6281 | ||
50bc7936 | 6282 | if (fdh != NULL |
f5385ebf | 6283 | && !fdh->elf.forced_local |
df131623 | 6284 | && (!info->executable |
f5385ebf AM |
6285 | || fdh->elf.def_dynamic |
6286 | || fdh->elf.ref_dynamic | |
50bc7936 AM |
6287 | || (fdh->elf.root.type == bfd_link_hash_undefweak |
6288 | && ELF_ST_VISIBILITY (fdh->elf.other) == STV_DEFAULT))) | |
6289 | { | |
6290 | if (fdh->elf.dynindx == -1) | |
c152c796 | 6291 | if (! bfd_elf_link_record_dynamic_symbol (info, &fdh->elf)) |
50bc7936 | 6292 | return FALSE; |
f5385ebf AM |
6293 | fdh->elf.ref_regular |= fh->elf.ref_regular; |
6294 | fdh->elf.ref_dynamic |= fh->elf.ref_dynamic; | |
6295 | fdh->elf.ref_regular_nonweak |= fh->elf.ref_regular_nonweak; | |
6296 | fdh->elf.non_got_ref |= fh->elf.non_got_ref; | |
50bc7936 | 6297 | if (ELF_ST_VISIBILITY (fh->elf.other) == STV_DEFAULT) |
e86ce104 | 6298 | { |
40d16e0b | 6299 | move_plt_plist (fh, fdh); |
f5385ebf | 6300 | fdh->elf.needs_plt = 1; |
e86ce104 | 6301 | } |
50bc7936 | 6302 | fdh->is_func_descriptor = 1; |
34814b9f AM |
6303 | fdh->oh = fh; |
6304 | fh->oh = fdh; | |
e86ce104 AM |
6305 | } |
6306 | ||
50bc7936 AM |
6307 | /* Now that the info is on the function descriptor, clear the |
6308 | function code sym info. Any function code syms for which we | |
6309 | don't have a definition in a regular file, we force local. | |
6310 | This prevents a shared library from exporting syms that have | |
6311 | been imported from another library. Function code syms that | |
6312 | are really in the library we must leave global to prevent the | |
6313 | linker dragging in a definition from a static library. */ | |
93f3fa99 AM |
6314 | force_local = (!fh->elf.def_regular |
6315 | || fdh == NULL | |
6316 | || !fdh->elf.def_regular | |
6317 | || fdh->elf.forced_local); | |
50bc7936 AM |
6318 | _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local); |
6319 | ||
b34976b6 | 6320 | return TRUE; |
e86ce104 | 6321 | } |
40b8271b | 6322 | |
e86ce104 | 6323 | /* Called near the start of bfd_elf_size_dynamic_sections. We use |
82bd7b59 AM |
6324 | this hook to a) provide some gcc support functions, and b) transfer |
6325 | dynamic linking information gathered so far on function code symbol | |
6326 | entries, to their corresponding function descriptor symbol entries. */ | |
deb0e272 | 6327 | |
b34976b6 | 6328 | static bfd_boolean |
4ce794b7 AM |
6329 | ppc64_elf_func_desc_adjust (bfd *obfd ATTRIBUTE_UNUSED, |
6330 | struct bfd_link_info *info) | |
e86ce104 AM |
6331 | { |
6332 | struct ppc_link_hash_table *htab; | |
82bd7b59 | 6333 | unsigned int i; |
deb0e272 AM |
6334 | const struct sfpr_def_parms funcs[] = |
6335 | { | |
6336 | { "_savegpr0_", 14, 31, savegpr0, savegpr0_tail }, | |
6337 | { "_restgpr0_", 14, 29, restgpr0, restgpr0_tail }, | |
6338 | { "_restgpr0_", 30, 31, restgpr0, restgpr0_tail }, | |
6339 | { "_savegpr1_", 14, 31, savegpr1, savegpr1_tail }, | |
6340 | { "_restgpr1_", 14, 31, restgpr1, restgpr1_tail }, | |
6341 | { "_savefpr_", 14, 31, savefpr, savefpr0_tail }, | |
6342 | { "_restfpr_", 14, 29, restfpr, restfpr0_tail }, | |
6343 | { "_restfpr_", 30, 31, restfpr, restfpr0_tail }, | |
6344 | { "._savef", 14, 31, savefpr, savefpr1_tail }, | |
6345 | { "._restf", 14, 31, restfpr, restfpr1_tail }, | |
6346 | { "_savevr_", 20, 31, savevr, savevr_tail }, | |
6347 | { "_restvr_", 20, 31, restvr, restvr_tail } | |
6348 | }; | |
e86ce104 AM |
6349 | |
6350 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
6351 | if (htab == NULL) |
6352 | return FALSE; | |
6353 | ||
82bd7b59 AM |
6354 | if (htab->sfpr == NULL) |
6355 | /* We don't have any relocs. */ | |
b34976b6 | 6356 | return TRUE; |
82bd7b59 | 6357 | |
deb0e272 AM |
6358 | /* Provide any missing _save* and _rest* functions. */ |
6359 | htab->sfpr->size = 0; | |
6360 | for (i = 0; i < sizeof (funcs) / sizeof (funcs[0]); i++) | |
6361 | if (!sfpr_define (info, &funcs[i])) | |
6362 | return FALSE; | |
82bd7b59 | 6363 | |
4ce794b7 | 6364 | elf_link_hash_traverse (&htab->elf, func_desc_adjust, info); |
805fc799 | 6365 | |
eea6121a | 6366 | if (htab->sfpr->size == 0) |
8423293d | 6367 | htab->sfpr->flags |= SEC_EXCLUDE; |
82bd7b59 | 6368 | |
b34976b6 | 6369 | return TRUE; |
e86ce104 AM |
6370 | } |
6371 | ||
6372 | /* Adjust a symbol defined by a dynamic object and referenced by a | |
6373 | regular object. The current definition is in some section of the | |
6374 | dynamic object, but we're not including those sections. We have to | |
6375 | change the definition to something the rest of the link can | |
6376 | understand. */ | |
6377 | ||
b34976b6 | 6378 | static bfd_boolean |
4ce794b7 AM |
6379 | ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info *info, |
6380 | struct elf_link_hash_entry *h) | |
e86ce104 AM |
6381 | { |
6382 | struct ppc_link_hash_table *htab; | |
e86ce104 | 6383 | asection *s; |
e86ce104 AM |
6384 | |
6385 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
6386 | if (htab == NULL) |
6387 | return FALSE; | |
e86ce104 AM |
6388 | |
6389 | /* Deal with function syms. */ | |
6390 | if (h->type == STT_FUNC | |
e054468f | 6391 | || h->type == STT_GNU_IFUNC |
f5385ebf | 6392 | || h->needs_plt) |
e86ce104 AM |
6393 | { |
6394 | /* Clear procedure linkage table information for any symbol that | |
6395 | won't need a .plt entry. */ | |
411e1bfb AM |
6396 | struct plt_entry *ent; |
6397 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) | |
6398 | if (ent->plt.refcount > 0) | |
6399 | break; | |
8387904d | 6400 | if (ent == NULL |
e054468f AM |
6401 | || (h->type != STT_GNU_IFUNC |
6402 | && (SYMBOL_CALLS_LOCAL (info, h) | |
6403 | || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
6404 | && h->root.type == bfd_link_hash_undefweak)))) | |
40b8271b | 6405 | { |
411e1bfb | 6406 | h->plt.plist = NULL; |
f5385ebf | 6407 | h->needs_plt = 0; |
40b8271b | 6408 | } |
5bd4f169 | 6409 | } |
bbd7ec4a | 6410 | else |
411e1bfb | 6411 | h->plt.plist = NULL; |
5bd4f169 AM |
6412 | |
6413 | /* If this is a weak symbol, and there is a real definition, the | |
6414 | processor independent code will have arranged for us to see the | |
6415 | real definition first, and we can just use the same value. */ | |
f6e332e6 | 6416 | if (h->u.weakdef != NULL) |
5bd4f169 | 6417 | { |
f6e332e6 AM |
6418 | BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined |
6419 | || h->u.weakdef->root.type == bfd_link_hash_defweak); | |
6420 | h->root.u.def.section = h->u.weakdef->root.u.def.section; | |
6421 | h->root.u.def.value = h->u.weakdef->root.u.def.value; | |
a23b6845 | 6422 | if (ELIMINATE_COPY_RELOCS) |
f6e332e6 | 6423 | h->non_got_ref = h->u.weakdef->non_got_ref; |
b34976b6 | 6424 | return TRUE; |
5bd4f169 AM |
6425 | } |
6426 | ||
5bd4f169 AM |
6427 | /* If we are creating a shared library, we must presume that the |
6428 | only references to the symbol are via the global offset table. | |
6429 | For such cases we need not do anything here; the relocations will | |
6430 | be handled correctly by relocate_section. */ | |
6431 | if (info->shared) | |
b34976b6 | 6432 | return TRUE; |
5bd4f169 | 6433 | |
65f38f15 AM |
6434 | /* If there are no references to this symbol that do not use the |
6435 | GOT, we don't need to generate a copy reloc. */ | |
f5385ebf | 6436 | if (!h->non_got_ref) |
b34976b6 | 6437 | return TRUE; |
65f38f15 | 6438 | |
b186458a JJ |
6439 | /* Don't generate a copy reloc for symbols defined in the executable. */ |
6440 | if (!h->def_dynamic || !h->ref_regular || h->def_regular) | |
6441 | return TRUE; | |
6442 | ||
f4656909 | 6443 | if (ELIMINATE_COPY_RELOCS) |
65f38f15 | 6444 | { |
f4656909 AM |
6445 | struct ppc_link_hash_entry * eh; |
6446 | struct ppc_dyn_relocs *p; | |
65f38f15 | 6447 | |
f4656909 AM |
6448 | eh = (struct ppc_link_hash_entry *) h; |
6449 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
6450 | { | |
6451 | s = p->sec->output_section; | |
6452 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
6453 | break; | |
6454 | } | |
6455 | ||
6456 | /* If we didn't find any dynamic relocs in read-only sections, then | |
6457 | we'll be keeping the dynamic relocs and avoiding the copy reloc. */ | |
6458 | if (p == NULL) | |
6459 | { | |
f5385ebf | 6460 | h->non_got_ref = 0; |
f4656909 AM |
6461 | return TRUE; |
6462 | } | |
65f38f15 AM |
6463 | } |
6464 | ||
5d35169e | 6465 | if (h->plt.plist != NULL) |
97b639ba AM |
6466 | { |
6467 | /* We should never get here, but unfortunately there are versions | |
6468 | of gcc out there that improperly (for this ABI) put initialized | |
6469 | function pointers, vtable refs and suchlike in read-only | |
6470 | sections. Allow them to proceed, but warn that this might | |
6471 | break at runtime. */ | |
6472 | (*_bfd_error_handler) | |
6473 | (_("copy reloc against `%s' requires lazy plt linking; " | |
6474 | "avoid setting LD_BIND_NOW=1 or upgrade gcc"), | |
6475 | h->root.root.string); | |
6476 | } | |
5d35169e AM |
6477 | |
6478 | /* This is a reference to a symbol defined by a dynamic object which | |
6479 | is not a function. */ | |
6480 | ||
909272ee AM |
6481 | if (h->size == 0) |
6482 | { | |
6483 | (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"), | |
6484 | h->root.root.string); | |
6485 | return TRUE; | |
6486 | } | |
6487 | ||
5bd4f169 AM |
6488 | /* We must allocate the symbol in our .dynbss section, which will |
6489 | become part of the .bss section of the executable. There will be | |
6490 | an entry for this symbol in the .dynsym section. The dynamic | |
6491 | object will contain position independent code, so all references | |
6492 | from the dynamic object to this symbol will go through the global | |
6493 | offset table. The dynamic linker will use the .dynsym entry to | |
6494 | determine the address it must put in the global offset table, so | |
6495 | both the dynamic object and the regular object will refer to the | |
6496 | same memory location for the variable. */ | |
5bd4f169 | 6497 | |
04c9666a AM |
6498 | /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker |
6499 | to copy the initial value out of the dynamic object and into the | |
5bd4f169 AM |
6500 | runtime process image. We need to remember the offset into the |
6501 | .rela.bss section we are going to use. */ | |
6502 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) | |
6503 | { | |
eea6121a | 6504 | htab->relbss->size += sizeof (Elf64_External_Rela); |
f5385ebf | 6505 | h->needs_copy = 1; |
5bd4f169 AM |
6506 | } |
6507 | ||
4ce794b7 | 6508 | s = htab->dynbss; |
5bd4f169 | 6509 | |
027297b7 | 6510 | return _bfd_elf_adjust_dynamic_copy (h, s); |
5bd4f169 AM |
6511 | } |
6512 | ||
e86ce104 AM |
6513 | /* If given a function descriptor symbol, hide both the function code |
6514 | sym and the descriptor. */ | |
6515 | static void | |
4ce794b7 AM |
6516 | ppc64_elf_hide_symbol (struct bfd_link_info *info, |
6517 | struct elf_link_hash_entry *h, | |
6518 | bfd_boolean force_local) | |
e86ce104 | 6519 | { |
34814b9f | 6520 | struct ppc_link_hash_entry *eh; |
e86ce104 AM |
6521 | _bfd_elf_link_hash_hide_symbol (info, h, force_local); |
6522 | ||
34814b9f AM |
6523 | eh = (struct ppc_link_hash_entry *) h; |
6524 | if (eh->is_func_descriptor) | |
e86ce104 | 6525 | { |
34814b9f | 6526 | struct ppc_link_hash_entry *fh = eh->oh; |
e86ce104 | 6527 | |
721956f4 | 6528 | if (fh == NULL) |
d1329ca3 AM |
6529 | { |
6530 | const char *p, *q; | |
6531 | struct ppc_link_hash_table *htab; | |
6532 | char save; | |
6533 | ||
6534 | /* We aren't supposed to use alloca in BFD because on | |
6535 | systems which do not have alloca the version in libiberty | |
6536 | calls xmalloc, which might cause the program to crash | |
6537 | when it runs out of memory. This function doesn't have a | |
6538 | return status, so there's no way to gracefully return an | |
6539 | error. So cheat. We know that string[-1] can be safely | |
34814b9f AM |
6540 | accessed; It's either a string in an ELF string table, |
6541 | or allocated in an objalloc structure. */ | |
d1329ca3 | 6542 | |
34814b9f | 6543 | p = eh->elf.root.root.string - 1; |
d1329ca3 AM |
6544 | save = *p; |
6545 | *(char *) p = '.'; | |
6546 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
6547 | if (htab == NULL) |
6548 | return; | |
6549 | ||
34814b9f AM |
6550 | fh = (struct ppc_link_hash_entry *) |
6551 | elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE); | |
d1329ca3 AM |
6552 | *(char *) p = save; |
6553 | ||
6554 | /* Unfortunately, if it so happens that the string we were | |
6555 | looking for was allocated immediately before this string, | |
6556 | then we overwrote the string terminator. That's the only | |
6557 | reason the lookup should fail. */ | |
6558 | if (fh == NULL) | |
6559 | { | |
34814b9f AM |
6560 | q = eh->elf.root.root.string + strlen (eh->elf.root.root.string); |
6561 | while (q >= eh->elf.root.root.string && *q == *p) | |
d1329ca3 | 6562 | --q, --p; |
34814b9f AM |
6563 | if (q < eh->elf.root.root.string && *p == '.') |
6564 | fh = (struct ppc_link_hash_entry *) | |
6565 | elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE); | |
d1329ca3 AM |
6566 | } |
6567 | if (fh != NULL) | |
6568 | { | |
34814b9f AM |
6569 | eh->oh = fh; |
6570 | fh->oh = eh; | |
d1329ca3 AM |
6571 | } |
6572 | } | |
e86ce104 | 6573 | if (fh != NULL) |
34814b9f | 6574 | _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local); |
e86ce104 AM |
6575 | } |
6576 | } | |
6577 | ||
411e1bfb | 6578 | static bfd_boolean |
8843416a AM |
6579 | get_sym_h (struct elf_link_hash_entry **hp, |
6580 | Elf_Internal_Sym **symp, | |
6581 | asection **symsecp, | |
f961d9dd | 6582 | unsigned char **tls_maskp, |
8843416a AM |
6583 | Elf_Internal_Sym **locsymsp, |
6584 | unsigned long r_symndx, | |
6585 | bfd *ibfd) | |
411e1bfb | 6586 | { |
0ffa91dd | 6587 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd); |
411e1bfb AM |
6588 | |
6589 | if (r_symndx >= symtab_hdr->sh_info) | |
6590 | { | |
6591 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd); | |
6592 | struct elf_link_hash_entry *h; | |
6593 | ||
6594 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
b31867b6 | 6595 | h = elf_follow_link (h); |
411e1bfb AM |
6596 | |
6597 | if (hp != NULL) | |
6598 | *hp = h; | |
6599 | ||
6600 | if (symp != NULL) | |
6601 | *symp = NULL; | |
6602 | ||
6603 | if (symsecp != NULL) | |
6604 | { | |
6605 | asection *symsec = NULL; | |
6606 | if (h->root.type == bfd_link_hash_defined | |
6607 | || h->root.type == bfd_link_hash_defweak) | |
6608 | symsec = h->root.u.def.section; | |
6609 | *symsecp = symsec; | |
6610 | } | |
6611 | ||
e7b938ca | 6612 | if (tls_maskp != NULL) |
411e1bfb AM |
6613 | { |
6614 | struct ppc_link_hash_entry *eh; | |
6615 | ||
6616 | eh = (struct ppc_link_hash_entry *) h; | |
e7b938ca | 6617 | *tls_maskp = &eh->tls_mask; |
411e1bfb AM |
6618 | } |
6619 | } | |
6620 | else | |
6621 | { | |
6622 | Elf_Internal_Sym *sym; | |
6623 | Elf_Internal_Sym *locsyms = *locsymsp; | |
6624 | ||
6625 | if (locsyms == NULL) | |
6626 | { | |
6627 | locsyms = (Elf_Internal_Sym *) symtab_hdr->contents; | |
6628 | if (locsyms == NULL) | |
6629 | locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr, | |
6630 | symtab_hdr->sh_info, | |
6631 | 0, NULL, NULL, NULL); | |
6632 | if (locsyms == NULL) | |
6633 | return FALSE; | |
6634 | *locsymsp = locsyms; | |
6635 | } | |
6636 | sym = locsyms + r_symndx; | |
6637 | ||
6638 | if (hp != NULL) | |
6639 | *hp = NULL; | |
6640 | ||
6641 | if (symp != NULL) | |
6642 | *symp = sym; | |
6643 | ||
6644 | if (symsecp != NULL) | |
cb33740c | 6645 | *symsecp = bfd_section_from_elf_index (ibfd, sym->st_shndx); |
411e1bfb | 6646 | |
e7b938ca | 6647 | if (tls_maskp != NULL) |
411e1bfb AM |
6648 | { |
6649 | struct got_entry **lgot_ents; | |
f961d9dd | 6650 | unsigned char *tls_mask; |
411e1bfb | 6651 | |
e7b938ca | 6652 | tls_mask = NULL; |
411e1bfb AM |
6653 | lgot_ents = elf_local_got_ents (ibfd); |
6654 | if (lgot_ents != NULL) | |
6655 | { | |
e054468f AM |
6656 | struct plt_entry **local_plt = (struct plt_entry **) |
6657 | (lgot_ents + symtab_hdr->sh_info); | |
f961d9dd | 6658 | unsigned char *lgot_masks = (unsigned char *) |
e054468f | 6659 | (local_plt + symtab_hdr->sh_info); |
e7b938ca | 6660 | tls_mask = &lgot_masks[r_symndx]; |
411e1bfb | 6661 | } |
e7b938ca | 6662 | *tls_maskp = tls_mask; |
411e1bfb AM |
6663 | } |
6664 | } | |
6665 | return TRUE; | |
6666 | } | |
6667 | ||
e7b938ca | 6668 | /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on |
951fd09b | 6669 | error, 2 on a toc GD type suitable for optimization, 3 on a toc LD |
ad8e1ba5 | 6670 | type suitable for optimization, and 1 otherwise. */ |
951fd09b AM |
6671 | |
6672 | static int | |
f961d9dd | 6673 | get_tls_mask (unsigned char **tls_maskp, |
3a71aa26 AM |
6674 | unsigned long *toc_symndx, |
6675 | bfd_vma *toc_addend, | |
0d4792f7 | 6676 | Elf_Internal_Sym **locsymsp, |
3a71aa26 AM |
6677 | const Elf_Internal_Rela *rel, |
6678 | bfd *ibfd) | |
411e1bfb AM |
6679 | { |
6680 | unsigned long r_symndx; | |
0d4792f7 | 6681 | int next_r; |
411e1bfb AM |
6682 | struct elf_link_hash_entry *h; |
6683 | Elf_Internal_Sym *sym; | |
6684 | asection *sec; | |
6685 | bfd_vma off; | |
6686 | ||
6687 | r_symndx = ELF64_R_SYM (rel->r_info); | |
e7b938ca | 6688 | if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd)) |
951fd09b | 6689 | return 0; |
411e1bfb | 6690 | |
e7b938ca | 6691 | if ((*tls_maskp != NULL && **tls_maskp != 0) |
411e1bfb | 6692 | || sec == NULL |
6bee8834 | 6693 | || ppc64_elf_section_data (sec) == NULL |
7c8fe5c4 | 6694 | || ppc64_elf_section_data (sec)->sec_type != sec_toc) |
951fd09b | 6695 | return 1; |
411e1bfb AM |
6696 | |
6697 | /* Look inside a TOC section too. */ | |
6698 | if (h != NULL) | |
6699 | { | |
6700 | BFD_ASSERT (h->root.type == bfd_link_hash_defined); | |
6701 | off = h->root.u.def.value; | |
6702 | } | |
6703 | else | |
6704 | off = sym->st_value; | |
6705 | off += rel->r_addend; | |
6706 | BFD_ASSERT (off % 8 == 0); | |
3a71aa26 AM |
6707 | r_symndx = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8]; |
6708 | next_r = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8 + 1]; | |
0d4792f7 AM |
6709 | if (toc_symndx != NULL) |
6710 | *toc_symndx = r_symndx; | |
3a71aa26 AM |
6711 | if (toc_addend != NULL) |
6712 | *toc_addend = ppc64_elf_section_data (sec)->u.toc.add[off / 8]; | |
6713 | if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd)) | |
6714 | return 0; | |
854b41e7 | 6715 | if ((h == NULL || is_static_defined (h)) |
0d4792f7 AM |
6716 | && (next_r == -1 || next_r == -2)) |
6717 | return 1 - next_r; | |
951fd09b | 6718 | return 1; |
411e1bfb AM |
6719 | } |
6720 | ||
754021d0 | 6721 | /* Adjust all global syms defined in opd sections. In gcc generated |
8387904d | 6722 | code for the old ABI, these will already have been done. */ |
754021d0 AM |
6723 | |
6724 | static bfd_boolean | |
6725 | adjust_opd_syms (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED) | |
6726 | { | |
6727 | struct ppc_link_hash_entry *eh; | |
6728 | asection *sym_sec; | |
74f0fb50 | 6729 | struct _opd_sec_data *opd; |
754021d0 AM |
6730 | |
6731 | if (h->root.type == bfd_link_hash_indirect) | |
6732 | return TRUE; | |
6733 | ||
6734 | if (h->root.type == bfd_link_hash_warning) | |
6735 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
6736 | ||
6737 | if (h->root.type != bfd_link_hash_defined | |
6738 | && h->root.type != bfd_link_hash_defweak) | |
6739 | return TRUE; | |
6740 | ||
6741 | eh = (struct ppc_link_hash_entry *) h; | |
6742 | if (eh->adjust_done) | |
6743 | return TRUE; | |
6744 | ||
6745 | sym_sec = eh->elf.root.u.def.section; | |
74f0fb50 AM |
6746 | opd = get_opd_info (sym_sec); |
6747 | if (opd != NULL && opd->adjust != NULL) | |
754021d0 | 6748 | { |
74f0fb50 | 6749 | long adjust = opd->adjust[eh->elf.root.u.def.value / 8]; |
4025353c AM |
6750 | if (adjust == -1) |
6751 | { | |
6752 | /* This entry has been deleted. */ | |
b3fac117 | 6753 | asection *dsec = ppc64_elf_tdata (sym_sec->owner)->deleted_section; |
81688140 AM |
6754 | if (dsec == NULL) |
6755 | { | |
6756 | for (dsec = sym_sec->owner->sections; dsec; dsec = dsec->next) | |
6757 | if (elf_discarded_section (dsec)) | |
6758 | { | |
b3fac117 | 6759 | ppc64_elf_tdata (sym_sec->owner)->deleted_section = dsec; |
81688140 AM |
6760 | break; |
6761 | } | |
6762 | } | |
4025353c | 6763 | eh->elf.root.u.def.value = 0; |
81688140 | 6764 | eh->elf.root.u.def.section = dsec; |
4025353c AM |
6765 | } |
6766 | else | |
6767 | eh->elf.root.u.def.value += adjust; | |
754021d0 AM |
6768 | eh->adjust_done = 1; |
6769 | } | |
6770 | return TRUE; | |
6771 | } | |
6772 | ||
8c1d1bb8 AM |
6773 | /* Handles decrementing dynamic reloc counts for the reloc specified by |
6774 | R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM_SEC | |
6775 | have already been determined. */ | |
6776 | ||
6777 | static bfd_boolean | |
6778 | dec_dynrel_count (bfd_vma r_info, | |
6779 | asection *sec, | |
6780 | struct bfd_link_info *info, | |
6781 | Elf_Internal_Sym **local_syms, | |
6782 | struct elf_link_hash_entry *h, | |
6783 | asection *sym_sec) | |
6784 | { | |
6785 | enum elf_ppc64_reloc_type r_type; | |
6786 | struct ppc_dyn_relocs *p; | |
6787 | struct ppc_dyn_relocs **pp; | |
6788 | ||
6789 | /* Can this reloc be dynamic? This switch, and later tests here | |
6790 | should be kept in sync with the code in check_relocs. */ | |
6791 | r_type = ELF64_R_TYPE (r_info); | |
6792 | switch (r_type) | |
6793 | { | |
6794 | default: | |
6795 | return TRUE; | |
6796 | ||
6797 | case R_PPC64_TPREL16: | |
6798 | case R_PPC64_TPREL16_LO: | |
6799 | case R_PPC64_TPREL16_HI: | |
6800 | case R_PPC64_TPREL16_HA: | |
6801 | case R_PPC64_TPREL16_DS: | |
6802 | case R_PPC64_TPREL16_LO_DS: | |
6803 | case R_PPC64_TPREL16_HIGHER: | |
6804 | case R_PPC64_TPREL16_HIGHERA: | |
6805 | case R_PPC64_TPREL16_HIGHEST: | |
6806 | case R_PPC64_TPREL16_HIGHESTA: | |
6807 | if (!info->shared) | |
6808 | return TRUE; | |
6809 | ||
6810 | case R_PPC64_TPREL64: | |
6811 | case R_PPC64_DTPMOD64: | |
6812 | case R_PPC64_DTPREL64: | |
6813 | case R_PPC64_ADDR64: | |
6814 | case R_PPC64_REL30: | |
6815 | case R_PPC64_REL32: | |
6816 | case R_PPC64_REL64: | |
6817 | case R_PPC64_ADDR14: | |
6818 | case R_PPC64_ADDR14_BRNTAKEN: | |
6819 | case R_PPC64_ADDR14_BRTAKEN: | |
6820 | case R_PPC64_ADDR16: | |
6821 | case R_PPC64_ADDR16_DS: | |
6822 | case R_PPC64_ADDR16_HA: | |
6823 | case R_PPC64_ADDR16_HI: | |
6824 | case R_PPC64_ADDR16_HIGHER: | |
6825 | case R_PPC64_ADDR16_HIGHERA: | |
6826 | case R_PPC64_ADDR16_HIGHEST: | |
6827 | case R_PPC64_ADDR16_HIGHESTA: | |
6828 | case R_PPC64_ADDR16_LO: | |
6829 | case R_PPC64_ADDR16_LO_DS: | |
6830 | case R_PPC64_ADDR24: | |
6831 | case R_PPC64_ADDR32: | |
6832 | case R_PPC64_UADDR16: | |
6833 | case R_PPC64_UADDR32: | |
6834 | case R_PPC64_UADDR64: | |
6835 | case R_PPC64_TOC: | |
6836 | break; | |
6837 | } | |
6838 | ||
6839 | if (local_syms != NULL) | |
6840 | { | |
6841 | unsigned long r_symndx; | |
6842 | Elf_Internal_Sym *sym; | |
6843 | bfd *ibfd = sec->owner; | |
6844 | ||
6845 | r_symndx = ELF64_R_SYM (r_info); | |
6846 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, local_syms, r_symndx, ibfd)) | |
6847 | return FALSE; | |
6848 | } | |
6849 | ||
6850 | if ((info->shared | |
1d483afe | 6851 | && (must_be_dyn_reloc (info, r_type) |
8c1d1bb8 AM |
6852 | || (h != NULL |
6853 | && (!info->symbolic | |
6854 | || h->root.type == bfd_link_hash_defweak | |
6855 | || !h->def_regular)))) | |
6856 | || (ELIMINATE_COPY_RELOCS | |
6857 | && !info->shared | |
6858 | && h != NULL | |
6859 | && (h->root.type == bfd_link_hash_defweak | |
6860 | || !h->def_regular))) | |
6861 | ; | |
6862 | else | |
6863 | return TRUE; | |
6864 | ||
6865 | if (h != NULL) | |
6866 | pp = &((struct ppc_link_hash_entry *) h)->dyn_relocs; | |
8c1d1bb8 | 6867 | else |
6edfbbad | 6868 | { |
60124e18 AM |
6869 | if (sym_sec != NULL) |
6870 | { | |
6871 | void *vpp = &elf_section_data (sym_sec)->local_dynrel; | |
6872 | pp = (struct ppc_dyn_relocs **) vpp; | |
6873 | } | |
6874 | else | |
6875 | { | |
6876 | void *vpp = &elf_section_data (sec)->local_dynrel; | |
6877 | pp = (struct ppc_dyn_relocs **) vpp; | |
6878 | } | |
6879 | ||
6880 | /* elf_gc_sweep may have already removed all dyn relocs associated | |
6881 | with local syms for a given section. Don't report a dynreloc | |
6882 | miscount. */ | |
6883 | if (*pp == NULL) | |
6884 | return TRUE; | |
6edfbbad | 6885 | } |
8c1d1bb8 AM |
6886 | |
6887 | while ((p = *pp) != NULL) | |
6888 | { | |
6889 | if (p->sec == sec) | |
6890 | { | |
1d483afe | 6891 | if (!must_be_dyn_reloc (info, r_type)) |
8c1d1bb8 AM |
6892 | p->pc_count -= 1; |
6893 | p->count -= 1; | |
6894 | if (p->count == 0) | |
6895 | *pp = p->next; | |
6896 | return TRUE; | |
6897 | } | |
6898 | pp = &p->next; | |
6899 | } | |
6900 | ||
6901 | (*_bfd_error_handler) (_("dynreloc miscount for %B, section %A"), | |
6902 | sec->owner, sec); | |
6903 | bfd_set_error (bfd_error_bad_value); | |
6904 | return FALSE; | |
6905 | } | |
6906 | ||
754021d0 AM |
6907 | /* Remove unused Official Procedure Descriptor entries. Currently we |
6908 | only remove those associated with functions in discarded link-once | |
6909 | sections, or weakly defined functions that have been overridden. It | |
6910 | would be possible to remove many more entries for statically linked | |
6911 | applications. */ | |
6912 | ||
b34976b6 | 6913 | bfd_boolean |
33c0ec9d | 6914 | ppc64_elf_edit_opd (struct bfd_link_info *info, bfd_boolean non_overlapping) |
1e2f5b6e AM |
6915 | { |
6916 | bfd *ibfd; | |
754021d0 | 6917 | bfd_boolean some_edited = FALSE; |
3f764659 | 6918 | asection *need_pad = NULL; |
1e2f5b6e | 6919 | |
411e1bfb | 6920 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) |
1e2f5b6e AM |
6921 | { |
6922 | asection *sec; | |
6923 | Elf_Internal_Rela *relstart, *rel, *relend; | |
6924 | Elf_Internal_Shdr *symtab_hdr; | |
6cdc0ccc | 6925 | Elf_Internal_Sym *local_syms; |
1e2f5b6e | 6926 | bfd_vma offset; |
74f0fb50 | 6927 | struct _opd_sec_data *opd; |
3f764659 JJ |
6928 | bfd_boolean need_edit, add_aux_fields; |
6929 | bfd_size_type cnt_16b = 0; | |
1e2f5b6e | 6930 | |
854b41e7 AM |
6931 | if (!is_ppc64_elf (ibfd)) |
6932 | continue; | |
6933 | ||
1e2f5b6e | 6934 | sec = bfd_get_section_by_name (ibfd, ".opd"); |
46de2a7c | 6935 | if (sec == NULL || sec->size == 0) |
1e2f5b6e AM |
6936 | continue; |
6937 | ||
4b85d634 AM |
6938 | if (sec->sec_info_type == ELF_INFO_TYPE_JUST_SYMS) |
6939 | continue; | |
6940 | ||
1e2f5b6e AM |
6941 | if (sec->output_section == bfd_abs_section_ptr) |
6942 | continue; | |
6943 | ||
6944 | /* Look through the section relocs. */ | |
6945 | if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0) | |
6946 | continue; | |
6947 | ||
6cdc0ccc | 6948 | local_syms = NULL; |
0ffa91dd | 6949 | symtab_hdr = &elf_symtab_hdr (ibfd); |
1e2f5b6e AM |
6950 | |
6951 | /* Read the relocations. */ | |
4ce794b7 | 6952 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, |
45d6a902 | 6953 | info->keep_memory); |
1e2f5b6e | 6954 | if (relstart == NULL) |
b34976b6 | 6955 | return FALSE; |
1e2f5b6e AM |
6956 | |
6957 | /* First run through the relocs to check they are sane, and to | |
6958 | determine whether we need to edit this opd section. */ | |
b34976b6 | 6959 | need_edit = FALSE; |
3f764659 | 6960 | need_pad = sec; |
1e2f5b6e AM |
6961 | offset = 0; |
6962 | relend = relstart + sec->reloc_count; | |
50bc7936 | 6963 | for (rel = relstart; rel < relend; ) |
1e2f5b6e | 6964 | { |
04c9666a | 6965 | enum elf_ppc64_reloc_type r_type; |
1e2f5b6e AM |
6966 | unsigned long r_symndx; |
6967 | asection *sym_sec; | |
6968 | struct elf_link_hash_entry *h; | |
6969 | Elf_Internal_Sym *sym; | |
6970 | ||
3f764659 | 6971 | /* .opd contains a regular array of 16 or 24 byte entries. We're |
1e2f5b6e AM |
6972 | only interested in the reloc pointing to a function entry |
6973 | point. */ | |
50bc7936 AM |
6974 | if (rel->r_offset != offset |
6975 | || rel + 1 >= relend | |
6976 | || (rel + 1)->r_offset != offset + 8) | |
1e2f5b6e AM |
6977 | { |
6978 | /* If someone messes with .opd alignment then after a | |
6979 | "ld -r" we might have padding in the middle of .opd. | |
6980 | Also, there's nothing to prevent someone putting | |
6981 | something silly in .opd with the assembler. No .opd | |
b34976b6 | 6982 | optimization for them! */ |
3f764659 | 6983 | broken_opd: |
1e2f5b6e | 6984 | (*_bfd_error_handler) |
d003868e | 6985 | (_("%B: .opd is not a regular array of opd entries"), ibfd); |
b34976b6 | 6986 | need_edit = FALSE; |
1e2f5b6e AM |
6987 | break; |
6988 | } | |
6989 | ||
50bc7936 AM |
6990 | if ((r_type = ELF64_R_TYPE (rel->r_info)) != R_PPC64_ADDR64 |
6991 | || (r_type = ELF64_R_TYPE ((rel + 1)->r_info)) != R_PPC64_TOC) | |
6992 | { | |
6993 | (*_bfd_error_handler) | |
d003868e AM |
6994 | (_("%B: unexpected reloc type %u in .opd section"), |
6995 | ibfd, r_type); | |
50bc7936 AM |
6996 | need_edit = FALSE; |
6997 | break; | |
6998 | } | |
6999 | ||
1e2f5b6e | 7000 | r_symndx = ELF64_R_SYM (rel->r_info); |
411e1bfb AM |
7001 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, |
7002 | r_symndx, ibfd)) | |
50bc7936 | 7003 | goto error_ret; |
1e2f5b6e AM |
7004 | |
7005 | if (sym_sec == NULL || sym_sec->owner == NULL) | |
7006 | { | |
411e1bfb AM |
7007 | const char *sym_name; |
7008 | if (h != NULL) | |
7009 | sym_name = h->root.root.string; | |
7010 | else | |
26c61ae5 L |
7011 | sym_name = bfd_elf_sym_name (ibfd, symtab_hdr, sym, |
7012 | sym_sec); | |
411e1bfb | 7013 | |
1e2f5b6e | 7014 | (*_bfd_error_handler) |
d003868e AM |
7015 | (_("%B: undefined sym `%s' in .opd section"), |
7016 | ibfd, sym_name); | |
b34976b6 | 7017 | need_edit = FALSE; |
1e2f5b6e AM |
7018 | break; |
7019 | } | |
7020 | ||
51020317 AM |
7021 | /* opd entries are always for functions defined in the |
7022 | current input bfd. If the symbol isn't defined in the | |
7023 | input bfd, then we won't be using the function in this | |
7024 | bfd; It must be defined in a linkonce section in another | |
7025 | bfd, or is weak. It's also possible that we are | |
7026 | discarding the function due to a linker script /DISCARD/, | |
7027 | which we test for via the output_section. */ | |
7028 | if (sym_sec->owner != ibfd | |
7029 | || sym_sec->output_section == bfd_abs_section_ptr) | |
b34976b6 | 7030 | need_edit = TRUE; |
1e2f5b6e | 7031 | |
50bc7936 | 7032 | rel += 2; |
3f764659 JJ |
7033 | if (rel == relend |
7034 | || (rel + 1 == relend && rel->r_offset == offset + 16)) | |
7035 | { | |
7036 | if (sec->size == offset + 24) | |
7037 | { | |
7038 | need_pad = NULL; | |
7039 | break; | |
7040 | } | |
7041 | if (rel == relend && sec->size == offset + 16) | |
7042 | { | |
7043 | cnt_16b++; | |
7044 | break; | |
7045 | } | |
7046 | goto broken_opd; | |
7047 | } | |
7048 | ||
7049 | if (rel->r_offset == offset + 24) | |
7050 | offset += 24; | |
7051 | else if (rel->r_offset != offset + 16) | |
7052 | goto broken_opd; | |
7053 | else if (rel + 1 < relend | |
7054 | && ELF64_R_TYPE (rel[0].r_info) == R_PPC64_ADDR64 | |
7055 | && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOC) | |
7056 | { | |
7057 | offset += 16; | |
7058 | cnt_16b++; | |
7059 | } | |
7060 | else if (rel + 2 < relend | |
7061 | && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_ADDR64 | |
7062 | && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_TOC) | |
7063 | { | |
7064 | offset += 24; | |
7065 | rel += 1; | |
7066 | } | |
7067 | else | |
7068 | goto broken_opd; | |
1e2f5b6e AM |
7069 | } |
7070 | ||
3f764659 JJ |
7071 | add_aux_fields = non_overlapping && cnt_16b > 0; |
7072 | ||
7073 | if (need_edit || add_aux_fields) | |
1e2f5b6e AM |
7074 | { |
7075 | Elf_Internal_Rela *write_rel; | |
d4730f92 | 7076 | Elf_Internal_Shdr *rel_hdr; |
1e2f5b6e | 7077 | bfd_byte *rptr, *wptr; |
983bddc8 | 7078 | bfd_byte *new_contents; |
b34976b6 | 7079 | bfd_boolean skip; |
3f764659 | 7080 | long opd_ent_size; |
74f0fb50 AM |
7081 | bfd_size_type amt; |
7082 | ||
983bddc8 | 7083 | new_contents = NULL; |
74f0fb50 AM |
7084 | amt = sec->size * sizeof (long) / 8; |
7085 | opd = &ppc64_elf_section_data (sec)->u.opd; | |
33c0ec9d | 7086 | opd->adjust = bfd_zalloc (sec->owner, amt); |
74f0fb50 AM |
7087 | if (opd->adjust == NULL) |
7088 | return FALSE; | |
7089 | ppc64_elf_section_data (sec)->sec_type = sec_opd; | |
1e2f5b6e AM |
7090 | |
7091 | /* This seems a waste of time as input .opd sections are all | |
7092 | zeros as generated by gcc, but I suppose there's no reason | |
7093 | this will always be so. We might start putting something in | |
7094 | the third word of .opd entries. */ | |
7095 | if ((sec->flags & SEC_IN_MEMORY) == 0) | |
7096 | { | |
eea6121a AM |
7097 | bfd_byte *loc; |
7098 | if (!bfd_malloc_and_get_section (ibfd, sec, &loc)) | |
6cdc0ccc | 7099 | { |
eea6121a AM |
7100 | if (loc != NULL) |
7101 | free (loc); | |
50bc7936 | 7102 | error_ret: |
6cdc0ccc AM |
7103 | if (local_syms != NULL |
7104 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
7105 | free (local_syms); | |
6cdc0ccc AM |
7106 | if (elf_section_data (sec)->relocs != relstart) |
7107 | free (relstart); | |
b34976b6 | 7108 | return FALSE; |
6cdc0ccc | 7109 | } |
1e2f5b6e AM |
7110 | sec->contents = loc; |
7111 | sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS); | |
7112 | } | |
7113 | ||
7114 | elf_section_data (sec)->relocs = relstart; | |
7115 | ||
3f764659 | 7116 | new_contents = sec->contents; |
3f764659 JJ |
7117 | if (add_aux_fields) |
7118 | { | |
7119 | new_contents = bfd_malloc (sec->size + cnt_16b * 8); | |
7120 | if (new_contents == NULL) | |
7121 | return FALSE; | |
7122 | need_pad = FALSE; | |
3f764659 | 7123 | } |
b4f4e59f AM |
7124 | wptr = new_contents; |
7125 | rptr = sec->contents; | |
3f764659 | 7126 | |
1e2f5b6e | 7127 | write_rel = relstart; |
b34976b6 | 7128 | skip = FALSE; |
1e2f5b6e | 7129 | offset = 0; |
3f764659 | 7130 | opd_ent_size = 0; |
1e2f5b6e AM |
7131 | for (rel = relstart; rel < relend; rel++) |
7132 | { | |
50bc7936 AM |
7133 | unsigned long r_symndx; |
7134 | asection *sym_sec; | |
7135 | struct elf_link_hash_entry *h; | |
7136 | Elf_Internal_Sym *sym; | |
7137 | ||
7138 | r_symndx = ELF64_R_SYM (rel->r_info); | |
7139 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
d37c89e5 | 7140 | r_symndx, ibfd)) |
50bc7936 AM |
7141 | goto error_ret; |
7142 | ||
1e2f5b6e AM |
7143 | if (rel->r_offset == offset) |
7144 | { | |
50bc7936 | 7145 | struct ppc_link_hash_entry *fdh = NULL; |
3f764659 JJ |
7146 | |
7147 | /* See if the .opd entry is full 24 byte or | |
7148 | 16 byte (with fd_aux entry overlapped with next | |
7149 | fd_func). */ | |
7150 | opd_ent_size = 24; | |
7151 | if ((rel + 2 == relend && sec->size == offset + 16) | |
7152 | || (rel + 3 < relend | |
7153 | && rel[2].r_offset == offset + 16 | |
7154 | && rel[3].r_offset == offset + 24 | |
7155 | && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_ADDR64 | |
7156 | && ELF64_R_TYPE (rel[3].r_info) == R_PPC64_TOC)) | |
7157 | opd_ent_size = 16; | |
7158 | ||
4025353c AM |
7159 | if (h != NULL |
7160 | && h->root.root.string[0] == '.') | |
c4f68ce3 | 7161 | { |
4dfe6ac6 NC |
7162 | struct ppc_link_hash_table *htab; |
7163 | ||
7164 | htab = ppc_hash_table (info); | |
7165 | if (htab != NULL) | |
7166 | fdh = lookup_fdh ((struct ppc_link_hash_entry *) h, | |
7167 | htab); | |
c4f68ce3 AM |
7168 | if (fdh != NULL |
7169 | && fdh->elf.root.type != bfd_link_hash_defined | |
7170 | && fdh->elf.root.type != bfd_link_hash_defweak) | |
7171 | fdh = NULL; | |
7172 | } | |
1e2f5b6e | 7173 | |
51020317 AM |
7174 | skip = (sym_sec->owner != ibfd |
7175 | || sym_sec->output_section == bfd_abs_section_ptr); | |
a4aa0fb7 AM |
7176 | if (skip) |
7177 | { | |
4025353c | 7178 | if (fdh != NULL && sym_sec->owner == ibfd) |
a4aa0fb7 AM |
7179 | { |
7180 | /* Arrange for the function descriptor sym | |
7181 | to be dropped. */ | |
d6fe2dc1 AM |
7182 | fdh->elf.root.u.def.value = 0; |
7183 | fdh->elf.root.u.def.section = sym_sec; | |
a4aa0fb7 | 7184 | } |
74f0fb50 | 7185 | opd->adjust[rel->r_offset / 8] = -1; |
a4aa0fb7 AM |
7186 | } |
7187 | else | |
1e2f5b6e AM |
7188 | { |
7189 | /* We'll be keeping this opd entry. */ | |
7190 | ||
4025353c | 7191 | if (fdh != NULL) |
1e2f5b6e | 7192 | { |
754021d0 AM |
7193 | /* Redefine the function descriptor symbol to |
7194 | this location in the opd section. It is | |
7195 | necessary to update the value here rather | |
7196 | than using an array of adjustments as we do | |
7197 | for local symbols, because various places | |
7198 | in the generic ELF code use the value | |
7199 | stored in u.def.value. */ | |
3f764659 | 7200 | fdh->elf.root.u.def.value = wptr - new_contents; |
754021d0 | 7201 | fdh->adjust_done = 1; |
1e2f5b6e | 7202 | } |
754021d0 AM |
7203 | |
7204 | /* Local syms are a bit tricky. We could | |
7205 | tweak them as they can be cached, but | |
7206 | we'd need to look through the local syms | |
7207 | for the function descriptor sym which we | |
7208 | don't have at the moment. So keep an | |
7209 | array of adjustments. */ | |
74f0fb50 | 7210 | opd->adjust[rel->r_offset / 8] |
3f764659 | 7211 | = (wptr - new_contents) - (rptr - sec->contents); |
1e2f5b6e AM |
7212 | |
7213 | if (wptr != rptr) | |
3f764659 JJ |
7214 | memcpy (wptr, rptr, opd_ent_size); |
7215 | wptr += opd_ent_size; | |
7216 | if (add_aux_fields && opd_ent_size == 16) | |
7217 | { | |
7218 | memset (wptr, '\0', 8); | |
7219 | wptr += 8; | |
7220 | } | |
1e2f5b6e | 7221 | } |
3f764659 JJ |
7222 | rptr += opd_ent_size; |
7223 | offset += opd_ent_size; | |
1e2f5b6e AM |
7224 | } |
7225 | ||
50bc7936 AM |
7226 | if (skip) |
7227 | { | |
60124e18 AM |
7228 | if (!NO_OPD_RELOCS |
7229 | && !info->relocatable | |
18d944df AM |
7230 | && !dec_dynrel_count (rel->r_info, sec, info, |
7231 | NULL, h, sym_sec)) | |
8c1d1bb8 | 7232 | goto error_ret; |
50bc7936 AM |
7233 | } |
7234 | else | |
1e2f5b6e | 7235 | { |
50bc7936 AM |
7236 | /* We need to adjust any reloc offsets to point to the |
7237 | new opd entries. While we're at it, we may as well | |
7238 | remove redundant relocs. */ | |
74f0fb50 | 7239 | rel->r_offset += opd->adjust[(offset - opd_ent_size) / 8]; |
1e2f5b6e AM |
7240 | if (write_rel != rel) |
7241 | memcpy (write_rel, rel, sizeof (*rel)); | |
7242 | ++write_rel; | |
7243 | } | |
7244 | } | |
7245 | ||
3f764659 | 7246 | sec->size = wptr - new_contents; |
1e2f5b6e | 7247 | sec->reloc_count = write_rel - relstart; |
3f764659 JJ |
7248 | if (add_aux_fields) |
7249 | { | |
7250 | free (sec->contents); | |
7251 | sec->contents = new_contents; | |
7252 | } | |
7253 | ||
05bf9422 | 7254 | /* Fudge the header size too, as this is used later in |
cdcf6e38 | 7255 | elf_bfd_final_link if we are emitting relocs. */ |
d4730f92 BS |
7256 | rel_hdr = _bfd_elf_single_rel_hdr (sec); |
7257 | rel_hdr->sh_size = sec->reloc_count * rel_hdr->sh_entsize; | |
754021d0 | 7258 | some_edited = TRUE; |
1e2f5b6e | 7259 | } |
6cdc0ccc | 7260 | else if (elf_section_data (sec)->relocs != relstart) |
1e2f5b6e | 7261 | free (relstart); |
6cdc0ccc | 7262 | |
411e1bfb AM |
7263 | if (local_syms != NULL |
7264 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
7265 | { | |
7266 | if (!info->keep_memory) | |
7267 | free (local_syms); | |
7268 | else | |
7269 | symtab_hdr->contents = (unsigned char *) local_syms; | |
7270 | } | |
7271 | } | |
7272 | ||
754021d0 AM |
7273 | if (some_edited) |
7274 | elf_link_hash_traverse (elf_hash_table (info), adjust_opd_syms, NULL); | |
7275 | ||
3f764659 JJ |
7276 | /* If we are doing a final link and the last .opd entry is just 16 byte |
7277 | long, add a 8 byte padding after it. */ | |
7278 | if (need_pad != NULL && !info->relocatable) | |
7279 | { | |
7280 | bfd_byte *p; | |
7281 | ||
7282 | if ((need_pad->flags & SEC_IN_MEMORY) == 0) | |
7283 | { | |
7284 | BFD_ASSERT (need_pad->size > 0); | |
7285 | ||
7286 | p = bfd_malloc (need_pad->size + 8); | |
7287 | if (p == NULL) | |
7288 | return FALSE; | |
699733f6 | 7289 | |
3f764659 JJ |
7290 | if (! bfd_get_section_contents (need_pad->owner, need_pad, |
7291 | p, 0, need_pad->size)) | |
7292 | return FALSE; | |
7293 | ||
7294 | need_pad->contents = p; | |
7295 | need_pad->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS); | |
7296 | } | |
7297 | else | |
7298 | { | |
7299 | p = bfd_realloc (need_pad->contents, need_pad->size + 8); | |
7300 | if (p == NULL) | |
7301 | return FALSE; | |
7302 | ||
7303 | need_pad->contents = p; | |
7304 | } | |
7305 | ||
7306 | memset (need_pad->contents + need_pad->size, 0, 8); | |
7307 | need_pad->size += 8; | |
7308 | } | |
7309 | ||
411e1bfb AM |
7310 | return TRUE; |
7311 | } | |
7312 | ||
e1918d23 | 7313 | /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */ |
411e1bfb | 7314 | |
e1918d23 | 7315 | asection * |
33c0ec9d AM |
7316 | ppc64_elf_tls_setup (struct bfd_link_info *info, |
7317 | int no_tls_get_addr_opt, | |
7318 | int *no_multi_toc) | |
411e1bfb | 7319 | { |
411e1bfb AM |
7320 | struct ppc_link_hash_table *htab; |
7321 | ||
411e1bfb | 7322 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
7323 | if (htab == NULL) |
7324 | return NULL; | |
7325 | ||
33c0ec9d AM |
7326 | if (*no_multi_toc) |
7327 | htab->do_multi_toc = 0; | |
7328 | else if (!htab->do_multi_toc) | |
7329 | *no_multi_toc = 1; | |
7330 | ||
3a71aa26 AM |
7331 | htab->tls_get_addr = ((struct ppc_link_hash_entry *) |
7332 | elf_link_hash_lookup (&htab->elf, ".__tls_get_addr", | |
7333 | FALSE, FALSE, TRUE)); | |
a7f2871e AM |
7334 | /* Move dynamic linking info to the function descriptor sym. */ |
7335 | if (htab->tls_get_addr != NULL) | |
7336 | func_desc_adjust (&htab->tls_get_addr->elf, info); | |
3a71aa26 AM |
7337 | htab->tls_get_addr_fd = ((struct ppc_link_hash_entry *) |
7338 | elf_link_hash_lookup (&htab->elf, "__tls_get_addr", | |
7339 | FALSE, FALSE, TRUE)); | |
a7f2871e AM |
7340 | if (!no_tls_get_addr_opt) |
7341 | { | |
7342 | struct elf_link_hash_entry *opt, *opt_fd, *tga, *tga_fd; | |
7343 | ||
7344 | opt = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr_opt", | |
7345 | FALSE, FALSE, TRUE); | |
7346 | if (opt != NULL) | |
7347 | func_desc_adjust (opt, info); | |
7348 | opt_fd = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt", | |
7349 | FALSE, FALSE, TRUE); | |
7350 | if (opt_fd != NULL | |
7351 | && (opt_fd->root.type == bfd_link_hash_defined | |
7352 | || opt_fd->root.type == bfd_link_hash_defweak)) | |
7353 | { | |
7354 | /* If glibc supports an optimized __tls_get_addr call stub, | |
7355 | signalled by the presence of __tls_get_addr_opt, and we'll | |
7356 | be calling __tls_get_addr via a plt call stub, then | |
7357 | make __tls_get_addr point to __tls_get_addr_opt. */ | |
7358 | tga_fd = &htab->tls_get_addr_fd->elf; | |
7359 | if (htab->elf.dynamic_sections_created | |
7360 | && tga_fd != NULL | |
7361 | && (tga_fd->type == STT_FUNC | |
7362 | || tga_fd->needs_plt) | |
7363 | && !(SYMBOL_CALLS_LOCAL (info, tga_fd) | |
7364 | || (ELF_ST_VISIBILITY (tga_fd->other) != STV_DEFAULT | |
7365 | && tga_fd->root.type == bfd_link_hash_undefweak))) | |
7366 | { | |
7367 | struct plt_entry *ent; | |
7368 | ||
7369 | for (ent = tga_fd->plt.plist; ent != NULL; ent = ent->next) | |
7370 | if (ent->plt.refcount > 0) | |
7371 | break; | |
7372 | if (ent != NULL) | |
7373 | { | |
7374 | tga_fd->root.type = bfd_link_hash_indirect; | |
7375 | tga_fd->root.u.i.link = &opt_fd->root; | |
7376 | ppc64_elf_copy_indirect_symbol (info, opt_fd, tga_fd); | |
7377 | if (opt_fd->dynindx != -1) | |
7378 | { | |
7379 | /* Use __tls_get_addr_opt in dynamic relocations. */ | |
7380 | opt_fd->dynindx = -1; | |
7381 | _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr, | |
7382 | opt_fd->dynstr_index); | |
7383 | if (!bfd_elf_link_record_dynamic_symbol (info, opt_fd)) | |
854b41e7 | 7384 | return NULL; |
a7f2871e AM |
7385 | } |
7386 | htab->tls_get_addr_fd = (struct ppc_link_hash_entry *) opt_fd; | |
7387 | tga = &htab->tls_get_addr->elf; | |
7388 | if (opt != NULL && tga != NULL) | |
7389 | { | |
7390 | tga->root.type = bfd_link_hash_indirect; | |
7391 | tga->root.u.i.link = &opt->root; | |
7392 | ppc64_elf_copy_indirect_symbol (info, opt, tga); | |
7393 | _bfd_elf_link_hash_hide_symbol (info, opt, | |
7394 | tga->forced_local); | |
7395 | htab->tls_get_addr = (struct ppc_link_hash_entry *) opt; | |
7396 | } | |
7397 | htab->tls_get_addr_fd->oh = htab->tls_get_addr; | |
7398 | htab->tls_get_addr_fd->is_func_descriptor = 1; | |
7399 | if (htab->tls_get_addr != NULL) | |
7400 | { | |
7401 | htab->tls_get_addr->oh = htab->tls_get_addr_fd; | |
7402 | htab->tls_get_addr->is_func = 1; | |
7403 | } | |
7404 | } | |
7405 | } | |
7406 | } | |
7407 | else | |
7408 | no_tls_get_addr_opt = TRUE; | |
7409 | } | |
7410 | htab->no_tls_get_addr_opt = no_tls_get_addr_opt; | |
33c0ec9d | 7411 | return _bfd_elf_tls_setup (info->output_bfd, info); |
3a71aa26 | 7412 | } |
8387904d | 7413 | |
3a71aa26 AM |
7414 | /* Return TRUE iff REL is a branch reloc with a global symbol matching |
7415 | HASH1 or HASH2. */ | |
8387904d | 7416 | |
3a71aa26 AM |
7417 | static bfd_boolean |
7418 | branch_reloc_hash_match (const bfd *ibfd, | |
7419 | const Elf_Internal_Rela *rel, | |
7420 | const struct ppc_link_hash_entry *hash1, | |
7421 | const struct ppc_link_hash_entry *hash2) | |
7422 | { | |
7423 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd); | |
7424 | enum elf_ppc64_reloc_type r_type = ELF64_R_TYPE (rel->r_info); | |
7425 | unsigned int r_symndx = ELF64_R_SYM (rel->r_info); | |
7426 | ||
e054468f | 7427 | if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type)) |
8387904d | 7428 | { |
3a71aa26 AM |
7429 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd); |
7430 | struct elf_link_hash_entry *h; | |
8387904d | 7431 | |
3a71aa26 | 7432 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; |
b31867b6 | 7433 | h = elf_follow_link (h); |
3a71aa26 AM |
7434 | if (h == &hash1->elf || h == &hash2->elf) |
7435 | return TRUE; | |
a48ebf4d | 7436 | } |
3a71aa26 | 7437 | return FALSE; |
951fd09b | 7438 | } |
411e1bfb | 7439 | |
951fd09b AM |
7440 | /* Run through all the TLS relocs looking for optimization |
7441 | opportunities. The linker has been hacked (see ppc64elf.em) to do | |
7442 | a preliminary section layout so that we know the TLS segment | |
7443 | offsets. We can't optimize earlier because some optimizations need | |
7444 | to know the tp offset, and we need to optimize before allocating | |
7445 | dynamic relocations. */ | |
7446 | ||
7447 | bfd_boolean | |
33c0ec9d | 7448 | ppc64_elf_tls_optimize (struct bfd_link_info *info) |
951fd09b AM |
7449 | { |
7450 | bfd *ibfd; | |
7451 | asection *sec; | |
7452 | struct ppc_link_hash_table *htab; | |
102890f0 | 7453 | int pass; |
951fd09b | 7454 | |
1d483afe | 7455 | if (info->relocatable || !info->executable) |
411e1bfb AM |
7456 | return TRUE; |
7457 | ||
951fd09b | 7458 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
7459 | if (htab == NULL) |
7460 | return FALSE; | |
7461 | ||
411e1bfb AM |
7462 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) |
7463 | { | |
7464 | Elf_Internal_Sym *locsyms = NULL; | |
30038c59 AM |
7465 | asection *toc = bfd_get_section_by_name (ibfd, ".toc"); |
7466 | unsigned char *toc_ref = NULL; | |
411e1bfb | 7467 | |
102890f0 AM |
7468 | /* Look at all the sections for this file. Make two passes over |
7469 | the relocs. On the first pass, mark toc entries involved | |
7470 | with tls relocs, and check that tls relocs involved in | |
7471 | setting up a tls_get_addr call are indeed followed by such a | |
7472 | call. If they are not, exclude them from the optimizations | |
7473 | done on the second pass. */ | |
7474 | for (pass = 0; pass < 2; ++pass) | |
7475 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
7476 | if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section)) | |
7477 | { | |
7478 | Elf_Internal_Rela *relstart, *rel, *relend; | |
411e1bfb | 7479 | |
102890f0 AM |
7480 | /* Read the relocations. */ |
7481 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, | |
7482 | info->keep_memory); | |
7483 | if (relstart == NULL) | |
7484 | return FALSE; | |
411e1bfb | 7485 | |
102890f0 AM |
7486 | relend = relstart + sec->reloc_count; |
7487 | for (rel = relstart; rel < relend; rel++) | |
7488 | { | |
7489 | enum elf_ppc64_reloc_type r_type; | |
7490 | unsigned long r_symndx; | |
7491 | struct elf_link_hash_entry *h; | |
7492 | Elf_Internal_Sym *sym; | |
7493 | asection *sym_sec; | |
f961d9dd AM |
7494 | unsigned char *tls_mask; |
7495 | unsigned char tls_set, tls_clear, tls_type = 0; | |
102890f0 AM |
7496 | bfd_vma value; |
7497 | bfd_boolean ok_tprel, is_local; | |
7498 | long toc_ref_index = 0; | |
7499 | int expecting_tls_get_addr = 0; | |
411e1bfb | 7500 | |
102890f0 AM |
7501 | r_symndx = ELF64_R_SYM (rel->r_info); |
7502 | if (!get_sym_h (&h, &sym, &sym_sec, &tls_mask, &locsyms, | |
7503 | r_symndx, ibfd)) | |
7504 | { | |
7505 | err_free_rel: | |
7506 | if (elf_section_data (sec)->relocs != relstart) | |
7507 | free (relstart); | |
7508 | if (toc_ref != NULL) | |
7509 | free (toc_ref); | |
7510 | if (locsyms != NULL | |
0ffa91dd | 7511 | && (elf_symtab_hdr (ibfd).contents |
102890f0 AM |
7512 | != (unsigned char *) locsyms)) |
7513 | free (locsyms); | |
7514 | return FALSE; | |
7515 | } | |
411e1bfb | 7516 | |
102890f0 AM |
7517 | if (h != NULL) |
7518 | { | |
766bc656 AM |
7519 | if (h->root.type == bfd_link_hash_defined |
7520 | || h->root.type == bfd_link_hash_defweak) | |
7521 | value = h->root.u.def.value; | |
7522 | else if (h->root.type == bfd_link_hash_undefweak) | |
7523 | value = 0; | |
7524 | else | |
102890f0 | 7525 | continue; |
102890f0 AM |
7526 | } |
7527 | else | |
7528 | /* Symbols referenced by TLS relocs must be of type | |
7529 | STT_TLS. So no need for .opd local sym adjust. */ | |
7530 | value = sym->st_value; | |
7531 | ||
7532 | ok_tprel = FALSE; | |
7533 | is_local = FALSE; | |
7534 | if (h == NULL | |
7535 | || !h->def_dynamic) | |
7536 | { | |
7537 | is_local = TRUE; | |
766bc656 AM |
7538 | if (h != NULL |
7539 | && h->root.type == bfd_link_hash_undefweak) | |
7540 | ok_tprel = TRUE; | |
7541 | else | |
7542 | { | |
7543 | value += sym_sec->output_offset; | |
7544 | value += sym_sec->output_section->vma; | |
7545 | value -= htab->elf.tls_sec->vma; | |
7546 | ok_tprel = (value + TP_OFFSET + ((bfd_vma) 1 << 31) | |
7547 | < (bfd_vma) 1 << 32); | |
7548 | } | |
102890f0 | 7549 | } |
951fd09b | 7550 | |
102890f0 AM |
7551 | r_type = ELF64_R_TYPE (rel->r_info); |
7552 | switch (r_type) | |
7553 | { | |
7554 | case R_PPC64_GOT_TLSLD16: | |
7555 | case R_PPC64_GOT_TLSLD16_LO: | |
7556 | expecting_tls_get_addr = 1; | |
7557 | /* Fall thru */ | |
7558 | ||
7559 | case R_PPC64_GOT_TLSLD16_HI: | |
7560 | case R_PPC64_GOT_TLSLD16_HA: | |
7561 | /* These relocs should never be against a symbol | |
7562 | defined in a shared lib. Leave them alone if | |
7563 | that turns out to be the case. */ | |
7564 | if (!is_local) | |
7565 | continue; | |
411e1bfb | 7566 | |
102890f0 | 7567 | /* LD -> LE */ |
411e1bfb | 7568 | tls_set = 0; |
102890f0 AM |
7569 | tls_clear = TLS_LD; |
7570 | tls_type = TLS_TLS | TLS_LD; | |
7571 | break; | |
411e1bfb | 7572 | |
102890f0 AM |
7573 | case R_PPC64_GOT_TLSGD16: |
7574 | case R_PPC64_GOT_TLSGD16_LO: | |
7575 | expecting_tls_get_addr = 1; | |
7576 | /* Fall thru */ | |
7577 | ||
7578 | case R_PPC64_GOT_TLSGD16_HI: | |
7579 | case R_PPC64_GOT_TLSGD16_HA: | |
7580 | if (ok_tprel) | |
7581 | /* GD -> LE */ | |
411e1bfb | 7582 | tls_set = 0; |
102890f0 AM |
7583 | else |
7584 | /* GD -> IE */ | |
7585 | tls_set = TLS_TLS | TLS_TPRELGD; | |
7586 | tls_clear = TLS_GD; | |
7587 | tls_type = TLS_TLS | TLS_GD; | |
7588 | break; | |
7589 | ||
7590 | case R_PPC64_GOT_TPREL16_DS: | |
7591 | case R_PPC64_GOT_TPREL16_LO_DS: | |
7592 | case R_PPC64_GOT_TPREL16_HI: | |
7593 | case R_PPC64_GOT_TPREL16_HA: | |
7594 | if (ok_tprel) | |
7595 | { | |
7596 | /* IE -> LE */ | |
7597 | tls_set = 0; | |
7598 | tls_clear = TLS_TPREL; | |
7599 | tls_type = TLS_TLS | TLS_TPREL; | |
7600 | break; | |
7601 | } | |
411e1bfb AM |
7602 | continue; |
7603 | ||
102890f0 AM |
7604 | case R_PPC64_TOC16: |
7605 | case R_PPC64_TOC16_LO: | |
7606 | case R_PPC64_TLS: | |
727fc41e AM |
7607 | case R_PPC64_TLSGD: |
7608 | case R_PPC64_TLSLD: | |
102890f0 AM |
7609 | if (sym_sec == NULL || sym_sec != toc) |
7610 | continue; | |
7611 | ||
7612 | /* Mark this toc entry as referenced by a TLS | |
7613 | code sequence. We can do that now in the | |
7614 | case of R_PPC64_TLS, and after checking for | |
7615 | tls_get_addr for the TOC16 relocs. */ | |
7616 | if (toc_ref == NULL) | |
7617 | { | |
7618 | toc_ref = bfd_zmalloc (toc->size / 8); | |
7619 | if (toc_ref == NULL) | |
7620 | goto err_free_rel; | |
7621 | } | |
7622 | if (h != NULL) | |
7623 | value = h->root.u.def.value; | |
7624 | else | |
7625 | value = sym->st_value; | |
7626 | value += rel->r_addend; | |
7627 | BFD_ASSERT (value < toc->size && value % 8 == 0); | |
7628 | toc_ref_index = value / 8; | |
727fc41e AM |
7629 | if (r_type == R_PPC64_TLS |
7630 | || r_type == R_PPC64_TLSGD | |
7631 | || r_type == R_PPC64_TLSLD) | |
102890f0 AM |
7632 | { |
7633 | toc_ref[toc_ref_index] = 1; | |
7634 | continue; | |
7635 | } | |
7636 | ||
7637 | if (pass != 0 && toc_ref[toc_ref_index] == 0) | |
7638 | continue; | |
7639 | ||
7640 | tls_set = 0; | |
7641 | tls_clear = 0; | |
7642 | expecting_tls_get_addr = 2; | |
7643 | break; | |
7644 | ||
7645 | case R_PPC64_TPREL64: | |
7646 | if (pass == 0 | |
7647 | || sec != toc | |
7648 | || toc_ref == NULL | |
7649 | || !toc_ref[rel->r_offset / 8]) | |
7650 | continue; | |
7651 | if (ok_tprel) | |
7652 | { | |
7653 | /* IE -> LE */ | |
7654 | tls_set = TLS_EXPLICIT; | |
7655 | tls_clear = TLS_TPREL; | |
7656 | break; | |
7657 | } | |
7658 | continue; | |
7659 | ||
7660 | case R_PPC64_DTPMOD64: | |
7661 | if (pass == 0 | |
7662 | || sec != toc | |
7663 | || toc_ref == NULL | |
7664 | || !toc_ref[rel->r_offset / 8]) | |
7665 | continue; | |
7666 | if (rel + 1 < relend | |
7667 | && (rel[1].r_info | |
7668 | == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)) | |
7669 | && rel[1].r_offset == rel->r_offset + 8) | |
7670 | { | |
7671 | if (ok_tprel) | |
7672 | /* GD -> LE */ | |
7673 | tls_set = TLS_EXPLICIT | TLS_GD; | |
7674 | else | |
7675 | /* GD -> IE */ | |
7676 | tls_set = TLS_EXPLICIT | TLS_GD | TLS_TPRELGD; | |
7677 | tls_clear = TLS_GD; | |
7678 | } | |
7679 | else | |
7680 | { | |
7681 | if (!is_local) | |
7682 | continue; | |
7683 | ||
7684 | /* LD -> LE */ | |
7685 | tls_set = TLS_EXPLICIT; | |
7686 | tls_clear = TLS_LD; | |
7687 | } | |
7688 | break; | |
7689 | ||
7690 | default: | |
7691 | continue; | |
7692 | } | |
7693 | ||
7694 | if (pass == 0) | |
7695 | { | |
727fc41e AM |
7696 | if (!expecting_tls_get_addr |
7697 | || !sec->has_tls_get_addr_call) | |
102890f0 AM |
7698 | continue; |
7699 | ||
3a71aa26 AM |
7700 | if (rel + 1 < relend |
7701 | && branch_reloc_hash_match (ibfd, rel + 1, | |
7702 | htab->tls_get_addr, | |
7703 | htab->tls_get_addr_fd)) | |
102890f0 | 7704 | { |
3a71aa26 | 7705 | if (expecting_tls_get_addr == 2) |
102890f0 | 7706 | { |
3a71aa26 | 7707 | /* Check for toc tls entries. */ |
f961d9dd | 7708 | unsigned char *toc_tls; |
3a71aa26 AM |
7709 | int retval; |
7710 | ||
7711 | retval = get_tls_mask (&toc_tls, NULL, NULL, | |
7712 | &locsyms, | |
7713 | rel, ibfd); | |
7714 | if (retval == 0) | |
7715 | goto err_free_rel; | |
7716 | if (retval > 1 && toc_tls != NULL) | |
7717 | toc_ref[toc_ref_index] = 1; | |
102890f0 | 7718 | } |
3a71aa26 | 7719 | continue; |
102890f0 AM |
7720 | } |
7721 | ||
7722 | if (expecting_tls_get_addr != 1) | |
7723 | continue; | |
7724 | ||
7725 | /* Uh oh, we didn't find the expected call. We | |
7726 | could just mark this symbol to exclude it | |
7727 | from tls optimization but it's safer to skip | |
7728 | the entire section. */ | |
7729 | sec->has_tls_reloc = 0; | |
7730 | break; | |
7731 | } | |
7732 | ||
85f7a9cb | 7733 | if (expecting_tls_get_addr && htab->tls_get_addr != NULL) |
102890f0 AM |
7734 | { |
7735 | struct plt_entry *ent; | |
7736 | for (ent = htab->tls_get_addr->elf.plt.plist; | |
7737 | ent != NULL; | |
7738 | ent = ent->next) | |
7739 | if (ent->addend == 0) | |
411e1bfb | 7740 | { |
102890f0 | 7741 | if (ent->plt.refcount > 0) |
30038c59 | 7742 | { |
102890f0 AM |
7743 | ent->plt.refcount -= 1; |
7744 | expecting_tls_get_addr = 0; | |
30038c59 | 7745 | } |
102890f0 | 7746 | break; |
411e1bfb | 7747 | } |
102890f0 | 7748 | } |
411e1bfb | 7749 | |
85f7a9cb | 7750 | if (expecting_tls_get_addr && htab->tls_get_addr_fd != NULL) |
102890f0 AM |
7751 | { |
7752 | struct plt_entry *ent; | |
7753 | for (ent = htab->tls_get_addr_fd->elf.plt.plist; | |
7754 | ent != NULL; | |
7755 | ent = ent->next) | |
7756 | if (ent->addend == 0) | |
411e1bfb | 7757 | { |
102890f0 AM |
7758 | if (ent->plt.refcount > 0) |
7759 | ent->plt.refcount -= 1; | |
7760 | break; | |
411e1bfb | 7761 | } |
102890f0 | 7762 | } |
411e1bfb | 7763 | |
102890f0 | 7764 | if (tls_clear == 0) |
30038c59 AM |
7765 | continue; |
7766 | ||
102890f0 AM |
7767 | if ((tls_set & TLS_EXPLICIT) == 0) |
7768 | { | |
7769 | struct got_entry *ent; | |
411e1bfb | 7770 | |
102890f0 AM |
7771 | /* Adjust got entry for this reloc. */ |
7772 | if (h != NULL) | |
7773 | ent = h->got.glist; | |
7774 | else | |
7775 | ent = elf_local_got_ents (ibfd)[r_symndx]; | |
411e1bfb | 7776 | |
102890f0 AM |
7777 | for (; ent != NULL; ent = ent->next) |
7778 | if (ent->addend == rel->r_addend | |
7779 | && ent->owner == ibfd | |
7780 | && ent->tls_type == tls_type) | |
7781 | break; | |
7782 | if (ent == NULL) | |
7783 | abort (); | |
411e1bfb | 7784 | |
102890f0 AM |
7785 | if (tls_set == 0) |
7786 | { | |
7787 | /* We managed to get rid of a got entry. */ | |
7788 | if (ent->got.refcount > 0) | |
7789 | ent->got.refcount -= 1; | |
7790 | } | |
7791 | } | |
7792 | else | |
7793 | { | |
7794 | /* If we got rid of a DTPMOD/DTPREL reloc pair then | |
7795 | we'll lose one or two dyn relocs. */ | |
7796 | if (!dec_dynrel_count (rel->r_info, sec, info, | |
7797 | NULL, h, sym_sec)) | |
7798 | return FALSE; | |
411e1bfb | 7799 | |
102890f0 AM |
7800 | if (tls_set == (TLS_EXPLICIT | TLS_GD)) |
7801 | { | |
7802 | if (!dec_dynrel_count ((rel + 1)->r_info, sec, info, | |
7803 | NULL, h, sym_sec)) | |
7804 | return FALSE; | |
7805 | } | |
7806 | } | |
411e1bfb | 7807 | |
102890f0 AM |
7808 | *tls_mask |= tls_set; |
7809 | *tls_mask &= ~tls_clear; | |
7810 | } | |
8c1d1bb8 | 7811 | |
102890f0 AM |
7812 | if (elf_section_data (sec)->relocs != relstart) |
7813 | free (relstart); | |
7814 | } | |
411e1bfb | 7815 | |
727fc41e AM |
7816 | if (toc_ref != NULL) |
7817 | free (toc_ref); | |
411e1bfb | 7818 | |
727fc41e AM |
7819 | if (locsyms != NULL |
7820 | && (elf_symtab_hdr (ibfd).contents != (unsigned char *) locsyms)) | |
7821 | { | |
7822 | if (!info->keep_memory) | |
7823 | free (locsyms); | |
7824 | else | |
7825 | elf_symtab_hdr (ibfd).contents = (unsigned char *) locsyms; | |
7826 | } | |
7827 | } | |
b34976b6 | 7828 | return TRUE; |
1e2f5b6e | 7829 | } |
b34976b6 | 7830 | |
c5614fa4 AM |
7831 | /* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust |
7832 | the values of any global symbols in a toc section that has been | |
7833 | edited. Globals in toc sections should be a rarity, so this function | |
7834 | sets a flag if any are found in toc sections other than the one just | |
7835 | edited, so that futher hash table traversals can be avoided. */ | |
7836 | ||
7837 | struct adjust_toc_info | |
7838 | { | |
7839 | asection *toc; | |
7840 | unsigned long *skip; | |
7841 | bfd_boolean global_toc_syms; | |
7842 | }; | |
7843 | ||
ba761f19 AM |
7844 | enum toc_skip_enum { ref_from_discarded = 1, can_optimize = 2 }; |
7845 | ||
c5614fa4 AM |
7846 | static bfd_boolean |
7847 | adjust_toc_syms (struct elf_link_hash_entry *h, void *inf) | |
7848 | { | |
7849 | struct ppc_link_hash_entry *eh; | |
7850 | struct adjust_toc_info *toc_inf = (struct adjust_toc_info *) inf; | |
854b41e7 | 7851 | unsigned long i; |
c5614fa4 AM |
7852 | |
7853 | if (h->root.type == bfd_link_hash_indirect) | |
7854 | return TRUE; | |
7855 | ||
7856 | if (h->root.type == bfd_link_hash_warning) | |
7857 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
7858 | ||
7859 | if (h->root.type != bfd_link_hash_defined | |
7860 | && h->root.type != bfd_link_hash_defweak) | |
7861 | return TRUE; | |
7862 | ||
7863 | eh = (struct ppc_link_hash_entry *) h; | |
7864 | if (eh->adjust_done) | |
7865 | return TRUE; | |
7866 | ||
7867 | if (eh->elf.root.u.def.section == toc_inf->toc) | |
7868 | { | |
854b41e7 AM |
7869 | if (eh->elf.root.u.def.value > toc_inf->toc->rawsize) |
7870 | i = toc_inf->toc->rawsize >> 3; | |
c5614fa4 | 7871 | else |
854b41e7 AM |
7872 | i = eh->elf.root.u.def.value >> 3; |
7873 | ||
ba761f19 | 7874 | if ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0) |
c5614fa4 AM |
7875 | { |
7876 | (*_bfd_error_handler) | |
854b41e7 AM |
7877 | (_("%s defined on removed toc entry"), eh->elf.root.root.string); |
7878 | do | |
7879 | ++i; | |
ba761f19 | 7880 | while ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0); |
854b41e7 | 7881 | eh->elf.root.u.def.value = (bfd_vma) i << 3; |
c5614fa4 | 7882 | } |
854b41e7 AM |
7883 | |
7884 | eh->elf.root.u.def.value -= toc_inf->skip[i]; | |
c5614fa4 AM |
7885 | eh->adjust_done = 1; |
7886 | } | |
7887 | else if (strcmp (eh->elf.root.u.def.section->name, ".toc") == 0) | |
7888 | toc_inf->global_toc_syms = TRUE; | |
7889 | ||
7890 | return TRUE; | |
7891 | } | |
7892 | ||
7893 | /* Examine all relocs referencing .toc sections in order to remove | |
7894 | unused .toc entries. */ | |
7895 | ||
7896 | bfd_boolean | |
33c0ec9d | 7897 | ppc64_elf_edit_toc (struct bfd_link_info *info) |
c5614fa4 AM |
7898 | { |
7899 | bfd *ibfd; | |
7900 | struct adjust_toc_info toc_inf; | |
67f0cbdb | 7901 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
c5614fa4 | 7902 | |
67f0cbdb | 7903 | htab->do_toc_opt = 1; |
c5614fa4 AM |
7904 | toc_inf.global_toc_syms = TRUE; |
7905 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
7906 | { | |
7907 | asection *toc, *sec; | |
7908 | Elf_Internal_Shdr *symtab_hdr; | |
7909 | Elf_Internal_Sym *local_syms; | |
92b7a70f | 7910 | Elf_Internal_Rela *relstart, *rel; |
c5614fa4 AM |
7911 | unsigned long *skip, *drop; |
7912 | unsigned char *used; | |
7913 | unsigned char *keep, last, some_unused; | |
7914 | ||
854b41e7 AM |
7915 | if (!is_ppc64_elf (ibfd)) |
7916 | continue; | |
7917 | ||
c5614fa4 AM |
7918 | toc = bfd_get_section_by_name (ibfd, ".toc"); |
7919 | if (toc == NULL | |
92b7a70f | 7920 | || toc->size == 0 |
c5614fa4 AM |
7921 | || toc->sec_info_type == ELF_INFO_TYPE_JUST_SYMS |
7922 | || elf_discarded_section (toc)) | |
7923 | continue; | |
7924 | ||
7925 | local_syms = NULL; | |
0ffa91dd | 7926 | symtab_hdr = &elf_symtab_hdr (ibfd); |
c5614fa4 AM |
7927 | |
7928 | /* Look at sections dropped from the final link. */ | |
7929 | skip = NULL; | |
7930 | relstart = NULL; | |
7931 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
7932 | { | |
7933 | if (sec->reloc_count == 0 | |
7934 | || !elf_discarded_section (sec) | |
7935 | || get_opd_info (sec) | |
7936 | || (sec->flags & SEC_ALLOC) == 0 | |
7937 | || (sec->flags & SEC_DEBUGGING) != 0) | |
7938 | continue; | |
7939 | ||
7940 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, FALSE); | |
7941 | if (relstart == NULL) | |
7942 | goto error_ret; | |
7943 | ||
7944 | /* Run through the relocs to see which toc entries might be | |
7945 | unused. */ | |
7946 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
7947 | { | |
7948 | enum elf_ppc64_reloc_type r_type; | |
7949 | unsigned long r_symndx; | |
7950 | asection *sym_sec; | |
7951 | struct elf_link_hash_entry *h; | |
7952 | Elf_Internal_Sym *sym; | |
7953 | bfd_vma val; | |
7954 | ||
7955 | r_type = ELF64_R_TYPE (rel->r_info); | |
7956 | switch (r_type) | |
7957 | { | |
7958 | default: | |
7959 | continue; | |
7960 | ||
7961 | case R_PPC64_TOC16: | |
7962 | case R_PPC64_TOC16_LO: | |
7963 | case R_PPC64_TOC16_HI: | |
7964 | case R_PPC64_TOC16_HA: | |
7965 | case R_PPC64_TOC16_DS: | |
7966 | case R_PPC64_TOC16_LO_DS: | |
7967 | break; | |
7968 | } | |
7969 | ||
7970 | r_symndx = ELF64_R_SYM (rel->r_info); | |
7971 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
7972 | r_symndx, ibfd)) | |
7973 | goto error_ret; | |
7974 | ||
7975 | if (sym_sec != toc) | |
7976 | continue; | |
7977 | ||
7978 | if (h != NULL) | |
7979 | val = h->root.u.def.value; | |
7980 | else | |
7981 | val = sym->st_value; | |
7982 | val += rel->r_addend; | |
7983 | ||
7984 | if (val >= toc->size) | |
7985 | continue; | |
7986 | ||
7987 | /* Anything in the toc ought to be aligned to 8 bytes. | |
7988 | If not, don't mark as unused. */ | |
7989 | if (val & 7) | |
7990 | continue; | |
7991 | ||
7992 | if (skip == NULL) | |
7993 | { | |
854b41e7 | 7994 | skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8); |
c5614fa4 AM |
7995 | if (skip == NULL) |
7996 | goto error_ret; | |
7997 | } | |
7998 | ||
ba761f19 | 7999 | skip[val >> 3] = ref_from_discarded; |
c5614fa4 AM |
8000 | } |
8001 | ||
8002 | if (elf_section_data (sec)->relocs != relstart) | |
8003 | free (relstart); | |
8004 | } | |
8005 | ||
ba761f19 AM |
8006 | /* For largetoc loads of address constants, we can convert |
8007 | . addis rx,2,addr@got@ha | |
8008 | . ld ry,addr@got@l(rx) | |
8009 | to | |
8010 | . addis rx,2,addr@toc@ha | |
8011 | . addi ry,rx,addr@toc@l | |
8012 | when addr is within 2G of the toc pointer. This then means | |
8013 | that the word storing "addr" in the toc is no longer needed. */ | |
8014 | ||
8015 | if (!ppc64_elf_tdata (ibfd)->has_small_toc_reloc | |
8016 | && toc->output_section->rawsize < (bfd_vma) 1 << 31 | |
8017 | && toc->reloc_count != 0) | |
8018 | { | |
8019 | /* Read toc relocs. */ | |
8020 | relstart = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL, | |
8021 | info->keep_memory); | |
8022 | if (relstart == NULL) | |
8023 | goto error_ret; | |
8024 | ||
8025 | for (rel = relstart; rel < relstart + toc->reloc_count; ++rel) | |
8026 | { | |
8027 | enum elf_ppc64_reloc_type r_type; | |
8028 | unsigned long r_symndx; | |
8029 | asection *sym_sec; | |
8030 | struct elf_link_hash_entry *h; | |
8031 | Elf_Internal_Sym *sym; | |
8032 | bfd_vma val, addr; | |
8033 | ||
8034 | r_type = ELF64_R_TYPE (rel->r_info); | |
8035 | if (r_type != R_PPC64_ADDR64) | |
8036 | continue; | |
8037 | ||
8038 | r_symndx = ELF64_R_SYM (rel->r_info); | |
8039 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
8040 | r_symndx, ibfd)) | |
8041 | goto error_ret; | |
8042 | ||
726d3ab0 | 8043 | if (!SYMBOL_CALLS_LOCAL (info, h)) |
ba761f19 AM |
8044 | continue; |
8045 | ||
8046 | if (h != NULL) | |
bddc25c9 AM |
8047 | { |
8048 | if (h->type == STT_GNU_IFUNC) | |
8049 | continue; | |
8050 | val = h->root.u.def.value; | |
8051 | } | |
ba761f19 | 8052 | else |
bddc25c9 AM |
8053 | { |
8054 | if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
8055 | continue; | |
8056 | val = sym->st_value; | |
8057 | } | |
ba761f19 AM |
8058 | val += rel->r_addend; |
8059 | val += sym_sec->output_section->vma + sym_sec->output_offset; | |
8060 | ||
8061 | /* We don't yet know the exact toc pointer value, but we | |
8062 | know it will be somewhere in the toc section. Don't | |
8063 | optimize if the difference from any possible toc | |
8064 | pointer is outside [ff..f80008000, 7fff7fff]. */ | |
8065 | addr = toc->output_section->vma + TOC_BASE_OFF; | |
8066 | if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32) | |
8067 | continue; | |
8068 | ||
8069 | addr = toc->output_section->vma + toc->output_section->rawsize; | |
8070 | if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32) | |
8071 | continue; | |
8072 | ||
8073 | if (skip == NULL) | |
8074 | { | |
8075 | skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8); | |
8076 | if (skip == NULL) | |
8077 | goto error_ret; | |
8078 | } | |
8079 | ||
8080 | skip[rel->r_offset >> 3] | |
8081 | |= can_optimize | ((rel - relstart) << 2); | |
8082 | } | |
8083 | ||
8084 | if (elf_section_data (toc)->relocs != relstart) | |
8085 | free (relstart); | |
8086 | } | |
8087 | ||
c5614fa4 AM |
8088 | if (skip == NULL) |
8089 | continue; | |
8090 | ||
8091 | used = bfd_zmalloc (sizeof (*used) * (toc->size + 7) / 8); | |
8092 | if (used == NULL) | |
8093 | { | |
8094 | error_ret: | |
8095 | if (local_syms != NULL | |
8096 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
8097 | free (local_syms); | |
8098 | if (sec != NULL | |
8099 | && relstart != NULL | |
8100 | && elf_section_data (sec)->relocs != relstart) | |
8101 | free (relstart); | |
8102 | if (skip != NULL) | |
8103 | free (skip); | |
8104 | return FALSE; | |
8105 | } | |
8106 | ||
30038c59 AM |
8107 | /* Now check all kept sections that might reference the toc. |
8108 | Check the toc itself last. */ | |
8109 | for (sec = (ibfd->sections == toc && toc->next ? toc->next | |
8110 | : ibfd->sections); | |
c5614fa4 | 8111 | sec != NULL; |
c5614fa4 | 8112 | sec = (sec == toc ? NULL |
c5614fa4 | 8113 | : sec->next == NULL ? toc |
30038c59 | 8114 | : sec->next == toc && toc->next ? toc->next |
c5614fa4 AM |
8115 | : sec->next)) |
8116 | { | |
8117 | int repeat; | |
8118 | ||
8119 | if (sec->reloc_count == 0 | |
8120 | || elf_discarded_section (sec) | |
8121 | || get_opd_info (sec) | |
8122 | || (sec->flags & SEC_ALLOC) == 0 | |
8123 | || (sec->flags & SEC_DEBUGGING) != 0) | |
8124 | continue; | |
8125 | ||
854b41e7 AM |
8126 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, |
8127 | info->keep_memory); | |
c5614fa4 AM |
8128 | if (relstart == NULL) |
8129 | goto error_ret; | |
8130 | ||
8131 | /* Mark toc entries referenced as used. */ | |
8132 | repeat = 0; | |
8133 | do | |
8134 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
8135 | { | |
8136 | enum elf_ppc64_reloc_type r_type; | |
8137 | unsigned long r_symndx; | |
8138 | asection *sym_sec; | |
8139 | struct elf_link_hash_entry *h; | |
8140 | Elf_Internal_Sym *sym; | |
8141 | bfd_vma val; | |
8142 | ||
8143 | r_type = ELF64_R_TYPE (rel->r_info); | |
8144 | switch (r_type) | |
8145 | { | |
8146 | case R_PPC64_TOC16: | |
8147 | case R_PPC64_TOC16_LO: | |
8148 | case R_PPC64_TOC16_HI: | |
8149 | case R_PPC64_TOC16_HA: | |
8150 | case R_PPC64_TOC16_DS: | |
8151 | case R_PPC64_TOC16_LO_DS: | |
8152 | /* In case we're taking addresses of toc entries. */ | |
8153 | case R_PPC64_ADDR64: | |
8154 | break; | |
8155 | ||
8156 | default: | |
8157 | continue; | |
8158 | } | |
8159 | ||
8160 | r_symndx = ELF64_R_SYM (rel->r_info); | |
8161 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
8162 | r_symndx, ibfd)) | |
8163 | { | |
8164 | free (used); | |
8165 | goto error_ret; | |
8166 | } | |
8167 | ||
8168 | if (sym_sec != toc) | |
8169 | continue; | |
8170 | ||
8171 | if (h != NULL) | |
8172 | val = h->root.u.def.value; | |
8173 | else | |
8174 | val = sym->st_value; | |
8175 | val += rel->r_addend; | |
8176 | ||
8177 | if (val >= toc->size) | |
8178 | continue; | |
8179 | ||
ba761f19 AM |
8180 | if ((skip[val >> 3] & can_optimize) != 0) |
8181 | { | |
8182 | bfd_vma off; | |
8183 | unsigned char opc; | |
8184 | ||
8185 | switch (r_type) | |
8186 | { | |
8187 | case R_PPC64_TOC16_HA: | |
8188 | break; | |
8189 | ||
8190 | case R_PPC64_TOC16_LO_DS: | |
8191 | off = rel->r_offset + (bfd_big_endian (ibfd) ? -2 : 3); | |
8192 | if (!bfd_get_section_contents (ibfd, sec, &opc, off, 1)) | |
8193 | return FALSE; | |
8194 | if ((opc & (0x3f << 2)) == (58u << 2)) | |
8195 | break; | |
8196 | /* Fall thru */ | |
8197 | ||
8198 | default: | |
8199 | /* Wrong sort of reloc, or not a ld. We may | |
8200 | as well clear ref_from_discarded too. */ | |
8201 | skip[val >> 3] = 0; | |
8202 | } | |
8203 | } | |
8204 | ||
c5614fa4 AM |
8205 | /* For the toc section, we only mark as used if |
8206 | this entry itself isn't unused. */ | |
8207 | if (sec == toc | |
8208 | && !used[val >> 3] | |
8209 | && (used[rel->r_offset >> 3] | |
ba761f19 | 8210 | || !(skip[rel->r_offset >> 3] & ref_from_discarded))) |
c5614fa4 AM |
8211 | /* Do all the relocs again, to catch reference |
8212 | chains. */ | |
8213 | repeat = 1; | |
8214 | ||
8215 | used[val >> 3] = 1; | |
8216 | } | |
8217 | while (repeat); | |
854b41e7 AM |
8218 | |
8219 | if (elf_section_data (sec)->relocs != relstart) | |
8220 | free (relstart); | |
c5614fa4 AM |
8221 | } |
8222 | ||
8223 | /* Merge the used and skip arrays. Assume that TOC | |
8224 | doublewords not appearing as either used or unused belong | |
8225 | to to an entry more than one doubleword in size. */ | |
8226 | for (drop = skip, keep = used, last = 0, some_unused = 0; | |
8227 | drop < skip + (toc->size + 7) / 8; | |
8228 | ++drop, ++keep) | |
8229 | { | |
8230 | if (*keep) | |
8231 | { | |
ba761f19 AM |
8232 | *drop &= ~ref_from_discarded; |
8233 | if ((*drop & can_optimize) != 0) | |
8234 | some_unused = 1; | |
c5614fa4 AM |
8235 | last = 0; |
8236 | } | |
8237 | else if (*drop) | |
8238 | { | |
8239 | some_unused = 1; | |
ba761f19 | 8240 | last = ref_from_discarded; |
c5614fa4 AM |
8241 | } |
8242 | else | |
8243 | *drop = last; | |
8244 | } | |
8245 | ||
8246 | free (used); | |
8247 | ||
8248 | if (some_unused) | |
8249 | { | |
8250 | bfd_byte *contents, *src; | |
8251 | unsigned long off; | |
d62b3684 | 8252 | Elf_Internal_Sym *sym; |
ba761f19 | 8253 | bfd_boolean local_toc_syms = FALSE; |
c5614fa4 AM |
8254 | |
8255 | /* Shuffle the toc contents, and at the same time convert the | |
8256 | skip array from booleans into offsets. */ | |
8257 | if (!bfd_malloc_and_get_section (ibfd, toc, &contents)) | |
8258 | goto error_ret; | |
8259 | ||
8260 | elf_section_data (toc)->this_hdr.contents = contents; | |
8261 | ||
8262 | for (src = contents, off = 0, drop = skip; | |
8263 | src < contents + toc->size; | |
8264 | src += 8, ++drop) | |
8265 | { | |
ba761f19 AM |
8266 | if ((*drop & (can_optimize | ref_from_discarded)) != 0) |
8267 | off += 8; | |
c5614fa4 AM |
8268 | else if (off != 0) |
8269 | { | |
8270 | *drop = off; | |
8271 | memcpy (src - off, src, 8); | |
8272 | } | |
8273 | } | |
854b41e7 | 8274 | *drop = off; |
c5614fa4 AM |
8275 | toc->rawsize = toc->size; |
8276 | toc->size = src - contents - off; | |
8277 | ||
ba761f19 AM |
8278 | /* Adjust addends for relocs against the toc section sym, |
8279 | and optimize any accesses we can. */ | |
c5614fa4 AM |
8280 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) |
8281 | { | |
8282 | if (sec->reloc_count == 0 | |
8283 | || elf_discarded_section (sec)) | |
8284 | continue; | |
8285 | ||
8286 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, | |
854b41e7 | 8287 | info->keep_memory); |
c5614fa4 AM |
8288 | if (relstart == NULL) |
8289 | goto error_ret; | |
8290 | ||
8291 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
8292 | { | |
8293 | enum elf_ppc64_reloc_type r_type; | |
8294 | unsigned long r_symndx; | |
8295 | asection *sym_sec; | |
8296 | struct elf_link_hash_entry *h; | |
854b41e7 | 8297 | bfd_vma val; |
c5614fa4 AM |
8298 | |
8299 | r_type = ELF64_R_TYPE (rel->r_info); | |
8300 | switch (r_type) | |
8301 | { | |
8302 | default: | |
8303 | continue; | |
8304 | ||
8305 | case R_PPC64_TOC16: | |
8306 | case R_PPC64_TOC16_LO: | |
8307 | case R_PPC64_TOC16_HI: | |
8308 | case R_PPC64_TOC16_HA: | |
8309 | case R_PPC64_TOC16_DS: | |
8310 | case R_PPC64_TOC16_LO_DS: | |
8311 | case R_PPC64_ADDR64: | |
8312 | break; | |
8313 | } | |
8314 | ||
8315 | r_symndx = ELF64_R_SYM (rel->r_info); | |
8316 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
8317 | r_symndx, ibfd)) | |
8318 | goto error_ret; | |
8319 | ||
ba761f19 | 8320 | if (sym_sec != toc) |
c5614fa4 AM |
8321 | continue; |
8322 | ||
ba761f19 AM |
8323 | if (h != NULL) |
8324 | val = h->root.u.def.value; | |
8325 | else | |
8326 | { | |
8327 | val = sym->st_value; | |
8328 | if (val != 0) | |
8329 | local_toc_syms = TRUE; | |
8330 | } | |
8331 | ||
8332 | val += rel->r_addend; | |
854b41e7 AM |
8333 | |
8334 | if (val > toc->rawsize) | |
8335 | val = toc->rawsize; | |
ba761f19 AM |
8336 | else if ((skip[val >> 3] & ref_from_discarded) != 0) |
8337 | continue; | |
8338 | else if ((skip[val >> 3] & can_optimize) != 0) | |
8339 | { | |
8340 | Elf_Internal_Rela *tocrel | |
8341 | = elf_section_data (toc)->relocs + (skip[val >> 3] >> 2); | |
8342 | unsigned long tsym = ELF64_R_SYM (tocrel->r_info); | |
8343 | ||
8344 | switch (r_type) | |
8345 | { | |
8346 | case R_PPC64_TOC16_HA: | |
8347 | rel->r_info = ELF64_R_INFO (tsym, R_PPC64_TOC16_HA); | |
8348 | break; | |
8349 | ||
8350 | case R_PPC64_TOC16_LO_DS: | |
8351 | rel->r_info = ELF64_R_INFO (tsym, R_PPC64_LO_DS_OPT); | |
8352 | break; | |
8353 | ||
8354 | default: | |
8355 | abort (); | |
8356 | } | |
8357 | rel->r_addend = tocrel->r_addend; | |
8358 | elf_section_data (sec)->relocs = relstart; | |
8359 | continue; | |
8360 | } | |
8361 | ||
8362 | if (h != NULL || sym->st_value != 0) | |
8363 | continue; | |
854b41e7 AM |
8364 | |
8365 | rel->r_addend -= skip[val >> 3]; | |
8366 | elf_section_data (sec)->relocs = relstart; | |
c5614fa4 | 8367 | } |
854b41e7 AM |
8368 | |
8369 | if (elf_section_data (sec)->relocs != relstart) | |
8370 | free (relstart); | |
c5614fa4 AM |
8371 | } |
8372 | ||
8373 | /* We shouldn't have local or global symbols defined in the TOC, | |
8374 | but handle them anyway. */ | |
d62b3684 AM |
8375 | for (sym = local_syms; |
8376 | sym < local_syms + symtab_hdr->sh_info; | |
8377 | ++sym) | |
8378 | if (sym->st_value != 0 | |
8379 | && bfd_section_from_elf_index (ibfd, sym->st_shndx) == toc) | |
8380 | { | |
8381 | unsigned long i; | |
854b41e7 | 8382 | |
d62b3684 AM |
8383 | if (sym->st_value > toc->rawsize) |
8384 | i = toc->rawsize >> 3; | |
8385 | else | |
8386 | i = sym->st_value >> 3; | |
854b41e7 | 8387 | |
d62b3684 AM |
8388 | if ((skip[i] & (ref_from_discarded | can_optimize)) != 0) |
8389 | { | |
8390 | if (local_toc_syms) | |
8391 | (*_bfd_error_handler) | |
8392 | (_("%s defined on removed toc entry"), | |
8393 | bfd_elf_sym_name (ibfd, symtab_hdr, sym, NULL)); | |
8394 | do | |
8395 | ++i; | |
8396 | while ((skip[i] & (ref_from_discarded | can_optimize))); | |
8397 | sym->st_value = (bfd_vma) i << 3; | |
c5614fa4 | 8398 | } |
d62b3684 AM |
8399 | |
8400 | sym->st_value -= skip[i]; | |
8401 | symtab_hdr->contents = (unsigned char *) local_syms; | |
8402 | } | |
c5614fa4 | 8403 | |
854b41e7 | 8404 | /* Adjust any global syms defined in this toc input section. */ |
c5614fa4 AM |
8405 | if (toc_inf.global_toc_syms) |
8406 | { | |
8407 | toc_inf.toc = toc; | |
8408 | toc_inf.skip = skip; | |
8409 | toc_inf.global_toc_syms = FALSE; | |
8410 | elf_link_hash_traverse (elf_hash_table (info), adjust_toc_syms, | |
8411 | &toc_inf); | |
8412 | } | |
854b41e7 AM |
8413 | |
8414 | if (toc->reloc_count != 0) | |
8415 | { | |
d4730f92 | 8416 | Elf_Internal_Shdr *rel_hdr; |
854b41e7 AM |
8417 | Elf_Internal_Rela *wrel; |
8418 | bfd_size_type sz; | |
8419 | ||
8420 | /* Read toc relocs. */ | |
8421 | relstart = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL, | |
8422 | TRUE); | |
8423 | if (relstart == NULL) | |
8424 | goto error_ret; | |
8425 | ||
8426 | /* Remove unused toc relocs, and adjust those we keep. */ | |
8427 | wrel = relstart; | |
8428 | for (rel = relstart; rel < relstart + toc->reloc_count; ++rel) | |
ba761f19 AM |
8429 | if ((skip[rel->r_offset >> 3] |
8430 | & (ref_from_discarded | can_optimize)) == 0) | |
854b41e7 AM |
8431 | { |
8432 | wrel->r_offset = rel->r_offset - skip[rel->r_offset >> 3]; | |
8433 | wrel->r_info = rel->r_info; | |
8434 | wrel->r_addend = rel->r_addend; | |
8435 | ++wrel; | |
8436 | } | |
8437 | else if (!dec_dynrel_count (rel->r_info, toc, info, | |
8438 | &local_syms, NULL, NULL)) | |
8439 | goto error_ret; | |
8440 | ||
8441 | toc->reloc_count = wrel - relstart; | |
d4730f92 BS |
8442 | rel_hdr = _bfd_elf_single_rel_hdr (toc); |
8443 | sz = rel_hdr->sh_entsize; | |
8444 | rel_hdr->sh_size = toc->reloc_count * sz; | |
854b41e7 | 8445 | } |
c5614fa4 AM |
8446 | } |
8447 | ||
8448 | if (local_syms != NULL | |
8449 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
8450 | { | |
8451 | if (!info->keep_memory) | |
8452 | free (local_syms); | |
8453 | else | |
8454 | symtab_hdr->contents = (unsigned char *) local_syms; | |
8455 | } | |
8456 | free (skip); | |
8457 | } | |
8458 | ||
8459 | return TRUE; | |
8460 | } | |
8461 | ||
1bbe0902 AM |
8462 | /* Return true iff input section I references the TOC using |
8463 | instructions limited to +/-32k offsets. */ | |
8464 | ||
8465 | bfd_boolean | |
8466 | ppc64_elf_has_small_toc_reloc (asection *i) | |
8467 | { | |
8468 | return (is_ppc64_elf (i->owner) | |
8469 | && ppc64_elf_tdata (i->owner)->has_small_toc_reloc); | |
8470 | } | |
8471 | ||
927be08e AM |
8472 | /* Allocate space for one GOT entry. */ |
8473 | ||
8474 | static void | |
8475 | allocate_got (struct elf_link_hash_entry *h, | |
8476 | struct bfd_link_info *info, | |
8477 | struct got_entry *gent) | |
8478 | { | |
8479 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
8480 | bfd_boolean dyn; | |
8481 | struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h; | |
8482 | int entsize = (gent->tls_type & eh->tls_mask & (TLS_GD | TLS_LD) | |
8483 | ? 16 : 8); | |
8484 | int rentsize = (gent->tls_type & eh->tls_mask & TLS_GD | |
8485 | ? 2 : 1) * sizeof (Elf64_External_Rela); | |
8486 | asection *got = ppc64_elf_tdata (gent->owner)->got; | |
8487 | ||
8488 | gent->got.offset = got->size; | |
8489 | got->size += entsize; | |
8490 | ||
8491 | dyn = htab->elf.dynamic_sections_created; | |
8492 | if ((info->shared | |
8493 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)) | |
8494 | && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
8495 | || h->root.type != bfd_link_hash_undefweak)) | |
8496 | { | |
8497 | asection *relgot = ppc64_elf_tdata (gent->owner)->relgot; | |
8498 | relgot->size += rentsize; | |
8499 | } | |
8500 | else if (h->type == STT_GNU_IFUNC) | |
8501 | { | |
8502 | asection *relgot = htab->reliplt; | |
8503 | relgot->size += rentsize; | |
8504 | htab->got_reli_size += rentsize; | |
8505 | } | |
8506 | } | |
8507 | ||
7865406b AM |
8508 | /* This function merges got entries in the same toc group. */ |
8509 | ||
8510 | static void | |
8511 | merge_got_entries (struct got_entry **pent) | |
8512 | { | |
8513 | struct got_entry *ent, *ent2; | |
8514 | ||
8515 | for (ent = *pent; ent != NULL; ent = ent->next) | |
8516 | if (!ent->is_indirect) | |
8517 | for (ent2 = ent->next; ent2 != NULL; ent2 = ent2->next) | |
8518 | if (!ent2->is_indirect | |
8519 | && ent2->addend == ent->addend | |
8520 | && ent2->tls_type == ent->tls_type | |
8521 | && elf_gp (ent2->owner) == elf_gp (ent->owner)) | |
8522 | { | |
8523 | ent2->is_indirect = TRUE; | |
8524 | ent2->got.ent = ent; | |
8525 | } | |
8526 | } | |
8527 | ||
65f38f15 AM |
8528 | /* Allocate space in .plt, .got and associated reloc sections for |
8529 | dynamic relocs. */ | |
5bd4f169 | 8530 | |
b34976b6 | 8531 | static bfd_boolean |
4ce794b7 | 8532 | allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf) |
5bd4f169 | 8533 | { |
65f38f15 AM |
8534 | struct bfd_link_info *info; |
8535 | struct ppc_link_hash_table *htab; | |
5bd4f169 | 8536 | asection *s; |
65f38f15 AM |
8537 | struct ppc_link_hash_entry *eh; |
8538 | struct ppc_dyn_relocs *p; | |
0b8bcf0d | 8539 | struct got_entry **pgent, *gent; |
5bd4f169 | 8540 | |
e92d460e | 8541 | if (h->root.type == bfd_link_hash_indirect) |
b34976b6 | 8542 | return TRUE; |
5bd4f169 | 8543 | |
e92d460e AM |
8544 | if (h->root.type == bfd_link_hash_warning) |
8545 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
8546 | ||
65f38f15 AM |
8547 | info = (struct bfd_link_info *) inf; |
8548 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
8549 | if (htab == NULL) |
8550 | return FALSE; | |
5bd4f169 | 8551 | |
e054468f AM |
8552 | if ((htab->elf.dynamic_sections_created |
8553 | && h->dynindx != -1 | |
8554 | && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h)) | |
8555 | || h->type == STT_GNU_IFUNC) | |
5bd4f169 | 8556 | { |
411e1bfb AM |
8557 | struct plt_entry *pent; |
8558 | bfd_boolean doneone = FALSE; | |
8559 | for (pent = h->plt.plist; pent != NULL; pent = pent->next) | |
8560 | if (pent->plt.refcount > 0) | |
8561 | { | |
25f23106 AM |
8562 | if (!htab->elf.dynamic_sections_created |
8563 | || h->dynindx == -1) | |
e054468f AM |
8564 | { |
8565 | s = htab->iplt; | |
8566 | pent->plt.offset = s->size; | |
8567 | s->size += PLT_ENTRY_SIZE; | |
8568 | s = htab->reliplt; | |
8569 | } | |
8570 | else | |
8571 | { | |
8572 | /* If this is the first .plt entry, make room for the special | |
8573 | first entry. */ | |
8574 | s = htab->plt; | |
8575 | if (s->size == 0) | |
8576 | s->size += PLT_INITIAL_ENTRY_SIZE; | |
8577 | ||
8578 | pent->plt.offset = s->size; | |
8579 | ||
8580 | /* Make room for this entry. */ | |
8581 | s->size += PLT_ENTRY_SIZE; | |
8582 | ||
8583 | /* Make room for the .glink code. */ | |
8584 | s = htab->glink; | |
8585 | if (s->size == 0) | |
8586 | s->size += GLINK_CALL_STUB_SIZE; | |
8587 | /* We need bigger stubs past index 32767. */ | |
8588 | if (s->size >= GLINK_CALL_STUB_SIZE + 32768*2*4) | |
8589 | s->size += 4; | |
8590 | s->size += 2*4; | |
8591 | ||
8592 | /* We also need to make an entry in the .rela.plt section. */ | |
8593 | s = htab->relplt; | |
8594 | } | |
eea6121a | 8595 | s->size += sizeof (Elf64_External_Rela); |
411e1bfb AM |
8596 | doneone = TRUE; |
8597 | } | |
8598 | else | |
8599 | pent->plt.offset = (bfd_vma) -1; | |
8600 | if (!doneone) | |
65f38f15 | 8601 | { |
411e1bfb | 8602 | h->plt.plist = NULL; |
f5385ebf | 8603 | h->needs_plt = 0; |
65f38f15 AM |
8604 | } |
8605 | } | |
8606 | else | |
8607 | { | |
411e1bfb | 8608 | h->plt.plist = NULL; |
f5385ebf | 8609 | h->needs_plt = 0; |
65f38f15 AM |
8610 | } |
8611 | ||
951fd09b AM |
8612 | eh = (struct ppc_link_hash_entry *) h; |
8613 | /* Run through the TLS GD got entries first if we're changing them | |
8614 | to TPREL. */ | |
e7b938ca | 8615 | if ((eh->tls_mask & TLS_TPRELGD) != 0) |
951fd09b AM |
8616 | for (gent = h->got.glist; gent != NULL; gent = gent->next) |
8617 | if (gent->got.refcount > 0 | |
8618 | && (gent->tls_type & TLS_GD) != 0) | |
8619 | { | |
8620 | /* This was a GD entry that has been converted to TPREL. If | |
8621 | there happens to be a TPREL entry we can use that one. */ | |
8622 | struct got_entry *ent; | |
8623 | for (ent = h->got.glist; ent != NULL; ent = ent->next) | |
8624 | if (ent->got.refcount > 0 | |
8625 | && (ent->tls_type & TLS_TPREL) != 0 | |
e717da7e AM |
8626 | && ent->addend == gent->addend |
8627 | && ent->owner == gent->owner) | |
951fd09b AM |
8628 | { |
8629 | gent->got.refcount = 0; | |
8630 | break; | |
8631 | } | |
8632 | ||
8633 | /* If not, then we'll be using our own TPREL entry. */ | |
8634 | if (gent->got.refcount != 0) | |
8635 | gent->tls_type = TLS_TLS | TLS_TPREL; | |
8636 | } | |
8637 | ||
7865406b AM |
8638 | /* Remove any list entry that won't generate a word in the GOT before |
8639 | we call merge_got_entries. Otherwise we risk merging to empty | |
8640 | entries. */ | |
0b8bcf0d AM |
8641 | pgent = &h->got.glist; |
8642 | while ((gent = *pgent) != NULL) | |
411e1bfb | 8643 | if (gent->got.refcount > 0) |
7865406b AM |
8644 | { |
8645 | if ((gent->tls_type & TLS_LD) != 0 | |
8646 | && !h->def_dynamic) | |
8647 | { | |
8648 | ppc64_tlsld_got (gent->owner)->got.refcount += 1; | |
8649 | *pgent = gent->next; | |
8650 | } | |
8651 | else | |
8652 | pgent = &gent->next; | |
8653 | } | |
8654 | else | |
8655 | *pgent = gent->next; | |
8656 | ||
8657 | if (!htab->do_multi_toc) | |
8658 | merge_got_entries (&h->got.glist); | |
8659 | ||
8660 | for (gent = h->got.glist; gent != NULL; gent = gent->next) | |
8661 | if (!gent->is_indirect) | |
411e1bfb AM |
8662 | { |
8663 | /* Make sure this symbol is output as a dynamic symbol. | |
951fd09b AM |
8664 | Undefined weak syms won't yet be marked as dynamic, |
8665 | nor will all TLS symbols. */ | |
411e1bfb | 8666 | if (h->dynindx == -1 |
b099ab9f | 8667 | && !h->forced_local |
25f23106 | 8668 | && h->type != STT_GNU_IFUNC |
b099ab9f | 8669 | && htab->elf.dynamic_sections_created) |
411e1bfb | 8670 | { |
c152c796 | 8671 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
411e1bfb AM |
8672 | return FALSE; |
8673 | } | |
65f38f15 | 8674 | |
0c8d6e5c | 8675 | if (!is_ppc64_elf (gent->owner)) |
927be08e | 8676 | abort (); |
0ffa91dd | 8677 | |
927be08e | 8678 | allocate_got (h, info, gent); |
411e1bfb | 8679 | } |
65f38f15 | 8680 | |
b099ab9f | 8681 | if (eh->dyn_relocs == NULL |
25f23106 AM |
8682 | || (!htab->elf.dynamic_sections_created |
8683 | && h->type != STT_GNU_IFUNC)) | |
b34976b6 | 8684 | return TRUE; |
65f38f15 AM |
8685 | |
8686 | /* In the shared -Bsymbolic case, discard space allocated for | |
8687 | dynamic pc-relative relocs against symbols which turn out to be | |
8688 | defined in regular objects. For the normal shared case, discard | |
8689 | space for relocs that have become local due to symbol visibility | |
8690 | changes. */ | |
8691 | ||
8692 | if (info->shared) | |
8693 | { | |
9c7a29a3 | 8694 | /* Relocs that use pc_count are those that appear on a call insn, |
1d483afe | 8695 | or certain REL relocs (see must_be_dyn_reloc) that can be |
9c7a29a3 AM |
8696 | generated via assembly. We want calls to protected symbols to |
8697 | resolve directly to the function rather than going via the plt. | |
8698 | If people want function pointer comparisons to work as expected | |
8699 | then they should avoid writing weird assembly. */ | |
09695f56 | 8700 | if (SYMBOL_CALLS_LOCAL (info, h)) |
65f38f15 AM |
8701 | { |
8702 | struct ppc_dyn_relocs **pp; | |
8703 | ||
8704 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) | |
5bd4f169 | 8705 | { |
65f38f15 AM |
8706 | p->count -= p->pc_count; |
8707 | p->pc_count = 0; | |
8708 | if (p->count == 0) | |
8709 | *pp = p->next; | |
8710 | else | |
8711 | pp = &p->next; | |
5bd4f169 | 8712 | } |
65f38f15 | 8713 | } |
4e795f50 AM |
8714 | |
8715 | /* Also discard relocs on undefined weak syms with non-default | |
8716 | visibility. */ | |
cab87ef9 AM |
8717 | if (eh->dyn_relocs != NULL |
8718 | && h->root.type == bfd_link_hash_undefweak) | |
dfbb6ac9 AM |
8719 | { |
8720 | if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) | |
8721 | eh->dyn_relocs = NULL; | |
8722 | ||
8723 | /* Make sure this symbol is output as a dynamic symbol. | |
8724 | Undefined weak syms won't yet be marked as dynamic. */ | |
8725 | else if (h->dynindx == -1 | |
8726 | && !h->forced_local) | |
8727 | { | |
8728 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) | |
8729 | return FALSE; | |
8730 | } | |
8731 | } | |
65f38f15 | 8732 | } |
25f23106 AM |
8733 | else if (h->type == STT_GNU_IFUNC) |
8734 | { | |
8735 | if (!h->non_got_ref) | |
8736 | eh->dyn_relocs = NULL; | |
8737 | } | |
f4656909 | 8738 | else if (ELIMINATE_COPY_RELOCS) |
65f38f15 AM |
8739 | { |
8740 | /* For the non-shared case, discard space for relocs against | |
8741 | symbols which turn out to need copy relocs or are not | |
8742 | dynamic. */ | |
8743 | ||
f5385ebf | 8744 | if (!h->non_got_ref |
f5385ebf | 8745 | && !h->def_regular) |
65f38f15 AM |
8746 | { |
8747 | /* Make sure this symbol is output as a dynamic symbol. | |
8748 | Undefined weak syms won't yet be marked as dynamic. */ | |
8749 | if (h->dynindx == -1 | |
f5385ebf | 8750 | && !h->forced_local) |
65f38f15 | 8751 | { |
c152c796 | 8752 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 8753 | return FALSE; |
65f38f15 AM |
8754 | } |
8755 | ||
8756 | /* If that succeeded, we know we'll be keeping all the | |
8757 | relocs. */ | |
8758 | if (h->dynindx != -1) | |
8759 | goto keep; | |
8760 | } | |
8761 | ||
8762 | eh->dyn_relocs = NULL; | |
8763 | ||
ec338859 | 8764 | keep: ; |
65f38f15 AM |
8765 | } |
8766 | ||
8767 | /* Finally, allocate space. */ | |
8768 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
8769 | { | |
8770 | asection *sreloc = elf_section_data (p->sec)->sreloc; | |
25f23106 AM |
8771 | if (!htab->elf.dynamic_sections_created) |
8772 | sreloc = htab->reliplt; | |
eea6121a | 8773 | sreloc->size += p->count * sizeof (Elf64_External_Rela); |
65f38f15 AM |
8774 | } |
8775 | ||
b34976b6 | 8776 | return TRUE; |
65f38f15 AM |
8777 | } |
8778 | ||
8779 | /* Find any dynamic relocs that apply to read-only sections. */ | |
8780 | ||
b34976b6 | 8781 | static bfd_boolean |
4ce794b7 | 8782 | readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf) |
65f38f15 AM |
8783 | { |
8784 | struct ppc_link_hash_entry *eh; | |
8785 | struct ppc_dyn_relocs *p; | |
8786 | ||
e92d460e AM |
8787 | if (h->root.type == bfd_link_hash_warning) |
8788 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
8789 | ||
65f38f15 AM |
8790 | eh = (struct ppc_link_hash_entry *) h; |
8791 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
8792 | { | |
8793 | asection *s = p->sec->output_section; | |
8794 | ||
8795 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
8796 | { | |
4ce794b7 | 8797 | struct bfd_link_info *info = inf; |
65f38f15 AM |
8798 | |
8799 | info->flags |= DF_TEXTREL; | |
8800 | ||
8801 | /* Not an error, just cut short the traversal. */ | |
b34976b6 | 8802 | return FALSE; |
65f38f15 AM |
8803 | } |
8804 | } | |
b34976b6 | 8805 | return TRUE; |
65f38f15 AM |
8806 | } |
8807 | ||
8808 | /* Set the sizes of the dynamic sections. */ | |
8809 | ||
b34976b6 | 8810 | static bfd_boolean |
4ce794b7 AM |
8811 | ppc64_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED, |
8812 | struct bfd_link_info *info) | |
65f38f15 AM |
8813 | { |
8814 | struct ppc_link_hash_table *htab; | |
8815 | bfd *dynobj; | |
8816 | asection *s; | |
b34976b6 | 8817 | bfd_boolean relocs; |
65f38f15 | 8818 | bfd *ibfd; |
7865406b | 8819 | struct got_entry *first_tlsld; |
65f38f15 AM |
8820 | |
8821 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
8822 | if (htab == NULL) |
8823 | return FALSE; | |
8824 | ||
65f38f15 AM |
8825 | dynobj = htab->elf.dynobj; |
8826 | if (dynobj == NULL) | |
8827 | abort (); | |
8828 | ||
8829 | if (htab->elf.dynamic_sections_created) | |
8830 | { | |
8831 | /* Set the contents of the .interp section to the interpreter. */ | |
36af4a4e | 8832 | if (info->executable) |
65f38f15 AM |
8833 | { |
8834 | s = bfd_get_section_by_name (dynobj, ".interp"); | |
8835 | if (s == NULL) | |
8836 | abort (); | |
eea6121a | 8837 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; |
65f38f15 AM |
8838 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; |
8839 | } | |
8840 | } | |
8841 | ||
8842 | /* Set up .got offsets for local syms, and space for local dynamic | |
8843 | relocs. */ | |
8844 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
8845 | { | |
411e1bfb AM |
8846 | struct got_entry **lgot_ents; |
8847 | struct got_entry **end_lgot_ents; | |
e054468f AM |
8848 | struct plt_entry **local_plt; |
8849 | struct plt_entry **end_local_plt; | |
f961d9dd | 8850 | unsigned char *lgot_masks; |
65f38f15 AM |
8851 | bfd_size_type locsymcount; |
8852 | Elf_Internal_Shdr *symtab_hdr; | |
8853 | asection *srel; | |
8854 | ||
0c8d6e5c | 8855 | if (!is_ppc64_elf (ibfd)) |
65f38f15 AM |
8856 | continue; |
8857 | ||
8858 | for (s = ibfd->sections; s != NULL; s = s->next) | |
8859 | { | |
ec338859 | 8860 | struct ppc_dyn_relocs *p; |
65f38f15 | 8861 | |
6edfbbad | 8862 | for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next) |
65f38f15 | 8863 | { |
ec338859 AM |
8864 | if (!bfd_is_abs_section (p->sec) |
8865 | && bfd_is_abs_section (p->sec->output_section)) | |
8866 | { | |
8867 | /* Input section has been discarded, either because | |
8868 | it is a copy of a linkonce section or due to | |
8869 | linker script /DISCARD/, so we'll be discarding | |
8870 | the relocs too. */ | |
8871 | } | |
248866a8 | 8872 | else if (p->count != 0) |
ec338859 AM |
8873 | { |
8874 | srel = elf_section_data (p->sec)->sreloc; | |
25f23106 AM |
8875 | if (!htab->elf.dynamic_sections_created) |
8876 | srel = htab->reliplt; | |
eea6121a | 8877 | srel->size += p->count * sizeof (Elf64_External_Rela); |
248866a8 AM |
8878 | if ((p->sec->output_section->flags & SEC_READONLY) != 0) |
8879 | info->flags |= DF_TEXTREL; | |
ec338859 | 8880 | } |
65f38f15 AM |
8881 | } |
8882 | } | |
8883 | ||
411e1bfb AM |
8884 | lgot_ents = elf_local_got_ents (ibfd); |
8885 | if (!lgot_ents) | |
65f38f15 AM |
8886 | continue; |
8887 | ||
0ffa91dd | 8888 | symtab_hdr = &elf_symtab_hdr (ibfd); |
65f38f15 | 8889 | locsymcount = symtab_hdr->sh_info; |
411e1bfb | 8890 | end_lgot_ents = lgot_ents + locsymcount; |
e054468f AM |
8891 | local_plt = (struct plt_entry **) end_lgot_ents; |
8892 | end_local_plt = local_plt + locsymcount; | |
f961d9dd | 8893 | lgot_masks = (unsigned char *) end_local_plt; |
e717da7e AM |
8894 | s = ppc64_elf_tdata (ibfd)->got; |
8895 | srel = ppc64_elf_tdata (ibfd)->relgot; | |
e7b938ca | 8896 | for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks) |
65f38f15 | 8897 | { |
0b8bcf0d | 8898 | struct got_entry **pent, *ent; |
411e1bfb | 8899 | |
0b8bcf0d AM |
8900 | pent = lgot_ents; |
8901 | while ((ent = *pent) != NULL) | |
411e1bfb AM |
8902 | if (ent->got.refcount > 0) |
8903 | { | |
e7b938ca | 8904 | if ((ent->tls_type & *lgot_masks & TLS_LD) != 0) |
411e1bfb | 8905 | { |
927be08e | 8906 | ppc64_tlsld_got (ibfd)->got.refcount += 1; |
0b8bcf0d | 8907 | *pent = ent->next; |
411e1bfb AM |
8908 | } |
8909 | else | |
8910 | { | |
25f23106 | 8911 | unsigned int num = 1; |
eea6121a | 8912 | ent->got.offset = s->size; |
e7b938ca | 8913 | if ((ent->tls_type & *lgot_masks & TLS_GD) != 0) |
25f23106 AM |
8914 | num = 2; |
8915 | s->size += num * 8; | |
8916 | if (info->shared) | |
8917 | srel->size += num * sizeof (Elf64_External_Rela); | |
8918 | else if ((*lgot_masks & PLT_IFUNC) != 0) | |
927be08e AM |
8919 | { |
8920 | htab->reliplt->size | |
8921 | += num * sizeof (Elf64_External_Rela); | |
8922 | htab->got_reli_size | |
8923 | += num * sizeof (Elf64_External_Rela); | |
8924 | } | |
0b8bcf0d | 8925 | pent = &ent->next; |
411e1bfb AM |
8926 | } |
8927 | } | |
8928 | else | |
0b8bcf0d | 8929 | *pent = ent->next; |
65f38f15 | 8930 | } |
e054468f AM |
8931 | |
8932 | /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */ | |
8933 | for (; local_plt < end_local_plt; ++local_plt) | |
8934 | { | |
8935 | struct plt_entry *ent; | |
8936 | ||
8937 | for (ent = *local_plt; ent != NULL; ent = ent->next) | |
8938 | if (ent->plt.refcount > 0) | |
8939 | { | |
91d6fa6a | 8940 | s = htab->iplt; |
e054468f AM |
8941 | ent->plt.offset = s->size; |
8942 | s->size += PLT_ENTRY_SIZE; | |
8943 | ||
25f23106 | 8944 | htab->reliplt->size += sizeof (Elf64_External_Rela); |
e054468f AM |
8945 | } |
8946 | else | |
8947 | ent->plt.offset = (bfd_vma) -1; | |
8948 | } | |
65f38f15 AM |
8949 | } |
8950 | ||
8951 | /* Allocate global sym .plt and .got entries, and space for global | |
8952 | sym dynamic relocs. */ | |
4ce794b7 | 8953 | elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info); |
65f38f15 | 8954 | |
7865406b | 8955 | first_tlsld = NULL; |
102890f0 AM |
8956 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) |
8957 | { | |
7865406b AM |
8958 | struct got_entry *ent; |
8959 | ||
0c8d6e5c | 8960 | if (!is_ppc64_elf (ibfd)) |
102890f0 AM |
8961 | continue; |
8962 | ||
7865406b AM |
8963 | ent = ppc64_tlsld_got (ibfd); |
8964 | if (ent->got.refcount > 0) | |
102890f0 | 8965 | { |
7865406b | 8966 | if (!htab->do_multi_toc && first_tlsld != NULL) |
102890f0 | 8967 | { |
7865406b AM |
8968 | ent->is_indirect = TRUE; |
8969 | ent->got.ent = first_tlsld; | |
8970 | } | |
8971 | else | |
8972 | { | |
8973 | if (first_tlsld == NULL) | |
8974 | first_tlsld = ent; | |
8975 | s = ppc64_elf_tdata (ibfd)->got; | |
8976 | ent->got.offset = s->size; | |
8977 | ent->owner = ibfd; | |
8978 | s->size += 16; | |
8979 | if (info->shared) | |
8980 | { | |
8981 | asection *srel = ppc64_elf_tdata (ibfd)->relgot; | |
8982 | srel->size += sizeof (Elf64_External_Rela); | |
8983 | } | |
102890f0 AM |
8984 | } |
8985 | } | |
8986 | else | |
7865406b | 8987 | ent->got.offset = (bfd_vma) -1; |
102890f0 AM |
8988 | } |
8989 | ||
65f38f15 AM |
8990 | /* We now have determined the sizes of the various dynamic sections. |
8991 | Allocate memory for them. */ | |
b34976b6 | 8992 | relocs = FALSE; |
65f38f15 AM |
8993 | for (s = dynobj->sections; s != NULL; s = s->next) |
8994 | { | |
8995 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
8996 | continue; | |
8997 | ||
4ce794b7 | 8998 | if (s == htab->brlt || s == htab->relbrlt) |
721956f4 AM |
8999 | /* These haven't been allocated yet; don't strip. */ |
9000 | continue; | |
e717da7e AM |
9001 | else if (s == htab->got |
9002 | || s == htab->plt | |
e054468f | 9003 | || s == htab->iplt |
c456f082 AM |
9004 | || s == htab->glink |
9005 | || s == htab->dynbss) | |
65f38f15 AM |
9006 | { |
9007 | /* Strip this section if we don't need it; see the | |
9008 | comment below. */ | |
5bd4f169 | 9009 | } |
70cc837d | 9010 | else if (CONST_STRNEQ (s->name, ".rela")) |
5bd4f169 | 9011 | { |
c456f082 | 9012 | if (s->size != 0) |
5bd4f169 | 9013 | { |
4ce794b7 | 9014 | if (s != htab->relplt) |
b34976b6 | 9015 | relocs = TRUE; |
5bd4f169 AM |
9016 | |
9017 | /* We use the reloc_count field as a counter if we need | |
9018 | to copy relocs into the output file. */ | |
9019 | s->reloc_count = 0; | |
9020 | } | |
9021 | } | |
65f38f15 | 9022 | else |
5bd4f169 AM |
9023 | { |
9024 | /* It's not one of our sections, so don't allocate space. */ | |
9025 | continue; | |
9026 | } | |
9027 | ||
eea6121a | 9028 | if (s->size == 0) |
5bd4f169 | 9029 | { |
c456f082 AM |
9030 | /* If we don't need this section, strip it from the |
9031 | output file. This is mostly to handle .rela.bss and | |
9032 | .rela.plt. We must create both sections in | |
9033 | create_dynamic_sections, because they must be created | |
9034 | before the linker maps input sections to output | |
9035 | sections. The linker does that before | |
9036 | adjust_dynamic_symbol is called, and it is that | |
9037 | function which decides whether anything needs to go | |
9038 | into these sections. */ | |
8423293d | 9039 | s->flags |= SEC_EXCLUDE; |
5bd4f169 AM |
9040 | continue; |
9041 | } | |
9042 | ||
c456f082 | 9043 | if ((s->flags & SEC_HAS_CONTENTS) == 0) |
5f333394 AM |
9044 | continue; |
9045 | ||
65f38f15 AM |
9046 | /* Allocate memory for the section contents. We use bfd_zalloc |
9047 | here in case unused entries are not reclaimed before the | |
9048 | section's contents are written out. This should not happen, | |
411e1bfb AM |
9049 | but this way if it does we get a R_PPC64_NONE reloc in .rela |
9050 | sections instead of garbage. | |
9051 | We also rely on the section contents being zero when writing | |
9052 | the GOT. */ | |
eea6121a | 9053 | s->contents = bfd_zalloc (dynobj, s->size); |
65f38f15 | 9054 | if (s->contents == NULL) |
b34976b6 | 9055 | return FALSE; |
5bd4f169 AM |
9056 | } |
9057 | ||
e717da7e AM |
9058 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) |
9059 | { | |
0c8d6e5c | 9060 | if (!is_ppc64_elf (ibfd)) |
7b53ace3 AM |
9061 | continue; |
9062 | ||
e717da7e AM |
9063 | s = ppc64_elf_tdata (ibfd)->got; |
9064 | if (s != NULL && s != htab->got) | |
9065 | { | |
eea6121a | 9066 | if (s->size == 0) |
8423293d | 9067 | s->flags |= SEC_EXCLUDE; |
e717da7e AM |
9068 | else |
9069 | { | |
eea6121a | 9070 | s->contents = bfd_zalloc (ibfd, s->size); |
e717da7e AM |
9071 | if (s->contents == NULL) |
9072 | return FALSE; | |
9073 | } | |
9074 | } | |
9075 | s = ppc64_elf_tdata (ibfd)->relgot; | |
9076 | if (s != NULL) | |
9077 | { | |
eea6121a | 9078 | if (s->size == 0) |
8423293d | 9079 | s->flags |= SEC_EXCLUDE; |
e717da7e AM |
9080 | else |
9081 | { | |
eea6121a | 9082 | s->contents = bfd_zalloc (ibfd, s->size); |
e717da7e AM |
9083 | if (s->contents == NULL) |
9084 | return FALSE; | |
9085 | relocs = TRUE; | |
9086 | s->reloc_count = 0; | |
9087 | } | |
9088 | } | |
9089 | } | |
9090 | ||
e86ce104 | 9091 | if (htab->elf.dynamic_sections_created) |
5bd4f169 AM |
9092 | { |
9093 | /* Add some entries to the .dynamic section. We fill in the | |
9094 | values later, in ppc64_elf_finish_dynamic_sections, but we | |
9095 | must add the entries now so that we get the correct size for | |
9096 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
9097 | dynamic linker and used by the debugger. */ | |
dc810e39 | 9098 | #define add_dynamic_entry(TAG, VAL) \ |
5a580b3a | 9099 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) |
dc810e39 | 9100 | |
36af4a4e | 9101 | if (info->executable) |
5bd4f169 | 9102 | { |
dc810e39 | 9103 | if (!add_dynamic_entry (DT_DEBUG, 0)) |
b34976b6 | 9104 | return FALSE; |
5bd4f169 AM |
9105 | } |
9106 | ||
eea6121a | 9107 | if (htab->plt != NULL && htab->plt->size != 0) |
5bd4f169 | 9108 | { |
dc810e39 AM |
9109 | if (!add_dynamic_entry (DT_PLTGOT, 0) |
9110 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
9111 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
5d1634d7 AM |
9112 | || !add_dynamic_entry (DT_JMPREL, 0) |
9113 | || !add_dynamic_entry (DT_PPC64_GLINK, 0)) | |
b34976b6 | 9114 | return FALSE; |
5bd4f169 AM |
9115 | } |
9116 | ||
19397422 AM |
9117 | if (NO_OPD_RELOCS) |
9118 | { | |
9119 | if (!add_dynamic_entry (DT_PPC64_OPD, 0) | |
9120 | || !add_dynamic_entry (DT_PPC64_OPDSZ, 0)) | |
b34976b6 | 9121 | return FALSE; |
19397422 AM |
9122 | } |
9123 | ||
a7f2871e AM |
9124 | if (!htab->no_tls_get_addr_opt |
9125 | && htab->tls_get_addr_fd != NULL | |
9126 | && htab->tls_get_addr_fd->elf.plt.plist != NULL | |
9127 | && !add_dynamic_entry (DT_PPC64_TLSOPT, 0)) | |
9128 | return FALSE; | |
9129 | ||
5bd4f169 AM |
9130 | if (relocs) |
9131 | { | |
dc810e39 AM |
9132 | if (!add_dynamic_entry (DT_RELA, 0) |
9133 | || !add_dynamic_entry (DT_RELASZ, 0) | |
9134 | || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela))) | |
b34976b6 | 9135 | return FALSE; |
5bd4f169 | 9136 | |
65f38f15 AM |
9137 | /* If any dynamic relocs apply to a read-only section, |
9138 | then we need a DT_TEXTREL entry. */ | |
248866a8 | 9139 | if ((info->flags & DF_TEXTREL) == 0) |
4ce794b7 | 9140 | elf_link_hash_traverse (&htab->elf, readonly_dynrelocs, info); |
5bd4f169 | 9141 | |
65f38f15 | 9142 | if ((info->flags & DF_TEXTREL) != 0) |
5bd4f169 | 9143 | { |
65f38f15 | 9144 | if (!add_dynamic_entry (DT_TEXTREL, 0)) |
b34976b6 | 9145 | return FALSE; |
5bd4f169 | 9146 | } |
5bd4f169 | 9147 | } |
5bd4f169 | 9148 | } |
65f38f15 | 9149 | #undef add_dynamic_entry |
5bd4f169 | 9150 | |
b34976b6 | 9151 | return TRUE; |
5bd4f169 AM |
9152 | } |
9153 | ||
721956f4 | 9154 | /* Determine the type of stub needed, if any, for a call. */ |
5bd4f169 | 9155 | |
4ce794b7 AM |
9156 | static inline enum ppc_stub_type |
9157 | ppc_type_of_stub (asection *input_sec, | |
9158 | const Elf_Internal_Rela *rel, | |
9159 | struct ppc_link_hash_entry **hash, | |
e054468f | 9160 | struct plt_entry **plt_ent, |
4ce794b7 | 9161 | bfd_vma destination) |
5bd4f169 | 9162 | { |
721956f4 AM |
9163 | struct ppc_link_hash_entry *h = *hash; |
9164 | bfd_vma location; | |
9165 | bfd_vma branch_offset; | |
9166 | bfd_vma max_branch_offset; | |
4ce794b7 | 9167 | enum elf_ppc64_reloc_type r_type; |
5bd4f169 | 9168 | |
721956f4 AM |
9169 | if (h != NULL) |
9170 | { | |
e054468f | 9171 | struct plt_entry *ent; |
7fe2b9a6 | 9172 | struct ppc_link_hash_entry *fdh = h; |
b31867b6 AM |
9173 | if (h->oh != NULL |
9174 | && h->oh->is_func_descriptor) | |
7b8f6675 AM |
9175 | { |
9176 | fdh = ppc_follow_link (h->oh); | |
9177 | *hash = fdh; | |
9178 | } | |
8387904d | 9179 | |
e054468f AM |
9180 | for (ent = fdh->elf.plt.plist; ent != NULL; ent = ent->next) |
9181 | if (ent->addend == rel->r_addend | |
9182 | && ent->plt.offset != (bfd_vma) -1) | |
9183 | { | |
e054468f AM |
9184 | *plt_ent = ent; |
9185 | return ppc_stub_plt_call; | |
9186 | } | |
5bd4f169 | 9187 | |
7fe2b9a6 AM |
9188 | /* Here, we know we don't have a plt entry. If we don't have a |
9189 | either a defined function descriptor or a defined entry symbol | |
9190 | in a regular object file, then it is pointless trying to make | |
9191 | any other type of stub. */ | |
854b41e7 AM |
9192 | if (!is_static_defined (&fdh->elf) |
9193 | && !is_static_defined (&h->elf)) | |
721956f4 | 9194 | return ppc_stub_none; |
5d1634d7 | 9195 | } |
e054468f AM |
9196 | else if (elf_local_got_ents (input_sec->owner) != NULL) |
9197 | { | |
9198 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (input_sec->owner); | |
9199 | struct plt_entry **local_plt = (struct plt_entry **) | |
9200 | elf_local_got_ents (input_sec->owner) + symtab_hdr->sh_info; | |
9201 | unsigned long r_symndx = ELF64_R_SYM (rel->r_info); | |
9202 | ||
9203 | if (local_plt[r_symndx] != NULL) | |
9204 | { | |
9205 | struct plt_entry *ent; | |
9206 | ||
9207 | for (ent = local_plt[r_symndx]; ent != NULL; ent = ent->next) | |
9208 | if (ent->addend == rel->r_addend | |
9209 | && ent->plt.offset != (bfd_vma) -1) | |
9210 | { | |
9211 | *plt_ent = ent; | |
9212 | return ppc_stub_plt_call; | |
9213 | } | |
9214 | } | |
9215 | } | |
5d1634d7 | 9216 | |
721956f4 AM |
9217 | /* Determine where the call point is. */ |
9218 | location = (input_sec->output_offset | |
9219 | + input_sec->output_section->vma | |
9220 | + rel->r_offset); | |
5d1634d7 | 9221 | |
721956f4 AM |
9222 | branch_offset = destination - location; |
9223 | r_type = ELF64_R_TYPE (rel->r_info); | |
5d1634d7 | 9224 | |
721956f4 AM |
9225 | /* Determine if a long branch stub is needed. */ |
9226 | max_branch_offset = 1 << 25; | |
4ce794b7 | 9227 | if (r_type != R_PPC64_REL24) |
721956f4 | 9228 | max_branch_offset = 1 << 15; |
5d1634d7 | 9229 | |
721956f4 AM |
9230 | if (branch_offset + max_branch_offset >= 2 * max_branch_offset) |
9231 | /* We need a stub. Figure out whether a long_branch or plt_branch | |
9232 | is needed later. */ | |
9233 | return ppc_stub_long_branch; | |
5d1634d7 | 9234 | |
721956f4 | 9235 | return ppc_stub_none; |
5d1634d7 AM |
9236 | } |
9237 | ||
9238 | /* Build a .plt call stub. */ | |
9239 | ||
4ce794b7 | 9240 | static inline bfd_byte * |
176a0d42 | 9241 | build_plt_stub (bfd *obfd, bfd_byte *p, int offset, Elf_Internal_Rela *r) |
5d1634d7 AM |
9242 | { |
9243 | #define PPC_LO(v) ((v) & 0xffff) | |
9244 | #define PPC_HI(v) (((v) >> 16) & 0xffff) | |
9245 | #define PPC_HA(v) PPC_HI ((v) + 0x8000) | |
9246 | ||
ac2df442 AM |
9247 | if (PPC_HA (offset) != 0) |
9248 | { | |
176a0d42 AM |
9249 | if (r != NULL) |
9250 | { | |
9251 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA); | |
9252 | r[1].r_offset = r[0].r_offset + 8; | |
9253 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); | |
9254 | r[1].r_addend = r[0].r_addend; | |
9255 | if (PPC_HA (offset + 16) != PPC_HA (offset)) | |
9256 | { | |
9257 | r[2].r_offset = r[1].r_offset + 4; | |
9258 | r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO); | |
9259 | r[2].r_addend = r[0].r_addend; | |
9260 | } | |
9261 | else | |
9262 | { | |
9263 | r[2].r_offset = r[1].r_offset + 8; | |
9264 | r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); | |
9265 | r[2].r_addend = r[0].r_addend + 8; | |
9266 | r[3].r_offset = r[2].r_offset + 4; | |
9267 | r[3].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); | |
9268 | r[3].r_addend = r[0].r_addend + 16; | |
9269 | } | |
9270 | } | |
ac2df442 AM |
9271 | bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (offset), p), p += 4; |
9272 | bfd_put_32 (obfd, STD_R2_40R1, p), p += 4; | |
9273 | bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset), p), p += 4; | |
9274 | if (PPC_HA (offset + 16) != PPC_HA (offset)) | |
9275 | { | |
9276 | bfd_put_32 (obfd, ADDI_R12_R12 | PPC_LO (offset), p), p += 4; | |
9277 | offset = 0; | |
9278 | } | |
9279 | bfd_put_32 (obfd, MTCTR_R11, p), p += 4; | |
9280 | bfd_put_32 (obfd, LD_R2_0R12 | PPC_LO (offset + 8), p), p += 4; | |
9281 | bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset + 16), p), p += 4; | |
9282 | bfd_put_32 (obfd, BCTR, p), p += 4; | |
9283 | } | |
9284 | else | |
9285 | { | |
176a0d42 AM |
9286 | if (r != NULL) |
9287 | { | |
9288 | r[0].r_offset += 4; | |
9289 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); | |
9290 | if (PPC_HA (offset + 16) != PPC_HA (offset)) | |
9291 | { | |
9292 | r[1].r_offset = r[0].r_offset + 4; | |
9293 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16); | |
9294 | r[1].r_addend = r[0].r_addend; | |
9295 | } | |
9296 | else | |
9297 | { | |
9298 | r[1].r_offset = r[0].r_offset + 8; | |
9299 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); | |
9300 | r[1].r_addend = r[0].r_addend + 16; | |
9301 | r[2].r_offset = r[1].r_offset + 4; | |
9302 | r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); | |
9303 | r[2].r_addend = r[0].r_addend + 8; | |
9304 | } | |
9305 | } | |
ac2df442 AM |
9306 | bfd_put_32 (obfd, STD_R2_40R1, p), p += 4; |
9307 | bfd_put_32 (obfd, LD_R11_0R2 | PPC_LO (offset), p), p += 4; | |
9308 | if (PPC_HA (offset + 16) != PPC_HA (offset)) | |
9309 | { | |
9310 | bfd_put_32 (obfd, ADDI_R2_R2 | PPC_LO (offset), p), p += 4; | |
9311 | offset = 0; | |
9312 | } | |
9313 | bfd_put_32 (obfd, MTCTR_R11, p), p += 4; | |
9314 | bfd_put_32 (obfd, LD_R11_0R2 | PPC_LO (offset + 16), p), p += 4; | |
9315 | bfd_put_32 (obfd, LD_R2_0R2 | PPC_LO (offset + 8), p), p += 4; | |
9316 | bfd_put_32 (obfd, BCTR, p), p += 4; | |
9317 | } | |
5d1634d7 AM |
9318 | return p; |
9319 | } | |
9320 | ||
a7f2871e AM |
9321 | /* Build a special .plt call stub for __tls_get_addr. */ |
9322 | ||
9323 | #define LD_R11_0R3 0xe9630000 | |
9324 | #define LD_R12_0R3 0xe9830000 | |
9325 | #define MR_R0_R3 0x7c601b78 | |
9326 | #define CMPDI_R11_0 0x2c2b0000 | |
9327 | #define ADD_R3_R12_R13 0x7c6c6a14 | |
9328 | #define BEQLR 0x4d820020 | |
9329 | #define MR_R3_R0 0x7c030378 | |
9330 | #define MFLR_R11 0x7d6802a6 | |
9331 | #define STD_R11_0R1 0xf9610000 | |
9332 | #define BCTRL 0x4e800421 | |
9333 | #define LD_R11_0R1 0xe9610000 | |
9334 | #define LD_R2_0R1 0xe8410000 | |
9335 | #define MTLR_R11 0x7d6803a6 | |
9336 | ||
9337 | static inline bfd_byte * | |
9338 | build_tls_get_addr_stub (bfd *obfd, bfd_byte *p, int offset, | |
9339 | Elf_Internal_Rela *r) | |
9340 | { | |
9341 | bfd_put_32 (obfd, LD_R11_0R3 + 0, p), p += 4; | |
9342 | bfd_put_32 (obfd, LD_R12_0R3 + 8, p), p += 4; | |
9343 | bfd_put_32 (obfd, MR_R0_R3, p), p += 4; | |
9344 | bfd_put_32 (obfd, CMPDI_R11_0, p), p += 4; | |
9345 | bfd_put_32 (obfd, ADD_R3_R12_R13, p), p += 4; | |
9346 | bfd_put_32 (obfd, BEQLR, p), p += 4; | |
9347 | bfd_put_32 (obfd, MR_R3_R0, p), p += 4; | |
9348 | bfd_put_32 (obfd, MFLR_R11, p), p += 4; | |
9349 | bfd_put_32 (obfd, STD_R11_0R1 + 32, p), p += 4; | |
9350 | ||
9351 | if (r != NULL) | |
9352 | r[0].r_offset += 9 * 4; | |
9353 | p = build_plt_stub (obfd, p, offset, r); | |
9354 | bfd_put_32 (obfd, BCTRL, p - 4); | |
9355 | ||
9356 | bfd_put_32 (obfd, LD_R11_0R1 + 32, p), p += 4; | |
9357 | bfd_put_32 (obfd, LD_R2_0R1 + 40, p), p += 4; | |
9358 | bfd_put_32 (obfd, MTLR_R11, p), p += 4; | |
9359 | bfd_put_32 (obfd, BLR, p), p += 4; | |
9360 | ||
9361 | return p; | |
9362 | } | |
9363 | ||
176a0d42 AM |
9364 | static Elf_Internal_Rela * |
9365 | get_relocs (asection *sec, int count) | |
9366 | { | |
9367 | Elf_Internal_Rela *relocs; | |
9368 | struct bfd_elf_section_data *elfsec_data; | |
9369 | ||
9370 | elfsec_data = elf_section_data (sec); | |
9371 | relocs = elfsec_data->relocs; | |
9372 | if (relocs == NULL) | |
9373 | { | |
9374 | bfd_size_type relsize; | |
9375 | relsize = sec->reloc_count * sizeof (*relocs); | |
9376 | relocs = bfd_alloc (sec->owner, relsize); | |
9377 | if (relocs == NULL) | |
9378 | return NULL; | |
9379 | elfsec_data->relocs = relocs; | |
d4730f92 BS |
9380 | elfsec_data->rela.hdr = bfd_zalloc (sec->owner, |
9381 | sizeof (Elf_Internal_Shdr)); | |
9382 | if (elfsec_data->rela.hdr == NULL) | |
9383 | return NULL; | |
9384 | elfsec_data->rela.hdr->sh_size = (sec->reloc_count | |
9385 | * sizeof (Elf64_External_Rela)); | |
9386 | elfsec_data->rela.hdr->sh_entsize = sizeof (Elf64_External_Rela); | |
176a0d42 AM |
9387 | sec->reloc_count = 0; |
9388 | } | |
9389 | relocs += sec->reloc_count; | |
9390 | sec->reloc_count += count; | |
9391 | return relocs; | |
9392 | } | |
9393 | ||
b34976b6 | 9394 | static bfd_boolean |
4ce794b7 | 9395 | ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg) |
5d1634d7 | 9396 | { |
721956f4 AM |
9397 | struct ppc_stub_hash_entry *stub_entry; |
9398 | struct ppc_branch_hash_entry *br_entry; | |
5d1634d7 AM |
9399 | struct bfd_link_info *info; |
9400 | struct ppc_link_hash_table *htab; | |
721956f4 AM |
9401 | bfd_byte *loc; |
9402 | bfd_byte *p; | |
ee75fd95 | 9403 | bfd_vma dest, off; |
721956f4 | 9404 | int size; |
176a0d42 | 9405 | Elf_Internal_Rela *r; |
e054468f | 9406 | asection *plt; |
5d1634d7 | 9407 | |
721956f4 AM |
9408 | /* Massage our args to the form they really have. */ |
9409 | stub_entry = (struct ppc_stub_hash_entry *) gen_entry; | |
4ce794b7 | 9410 | info = in_arg; |
5d1634d7 | 9411 | |
5d1634d7 | 9412 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
9413 | if (htab == NULL) |
9414 | return FALSE; | |
5d1634d7 | 9415 | |
721956f4 | 9416 | /* Make a note of the offset within the stubs for this entry. */ |
eea6121a | 9417 | stub_entry->stub_offset = stub_entry->stub_sec->size; |
97b639ba | 9418 | loc = stub_entry->stub_sec->contents + stub_entry->stub_offset; |
721956f4 | 9419 | |
4ce794b7 | 9420 | htab->stub_count[stub_entry->stub_type - 1] += 1; |
721956f4 | 9421 | switch (stub_entry->stub_type) |
5d1634d7 | 9422 | { |
721956f4 | 9423 | case ppc_stub_long_branch: |
ad8e1ba5 | 9424 | case ppc_stub_long_branch_r2off: |
721956f4 | 9425 | /* Branches are relative. This is where we are going to. */ |
ee75fd95 AM |
9426 | off = dest = (stub_entry->target_value |
9427 | + stub_entry->target_section->output_offset | |
9428 | + stub_entry->target_section->output_section->vma); | |
5d1634d7 | 9429 | |
721956f4 AM |
9430 | /* And this is where we are coming from. */ |
9431 | off -= (stub_entry->stub_offset | |
97b639ba AM |
9432 | + stub_entry->stub_sec->output_offset |
9433 | + stub_entry->stub_sec->output_section->vma); | |
e86ce104 | 9434 | |
ac2df442 AM |
9435 | size = 4; |
9436 | if (stub_entry->stub_type == ppc_stub_long_branch_r2off) | |
ad8e1ba5 AM |
9437 | { |
9438 | bfd_vma r2off; | |
9439 | ||
9440 | r2off = (htab->stub_group[stub_entry->target_section->id].toc_off | |
9441 | - htab->stub_group[stub_entry->id_sec->id].toc_off); | |
97b639ba | 9442 | bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc); |
ad8e1ba5 | 9443 | loc += 4; |
ac2df442 AM |
9444 | size = 12; |
9445 | if (PPC_HA (r2off) != 0) | |
9446 | { | |
9447 | size = 16; | |
9448 | bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc); | |
9449 | loc += 4; | |
9450 | } | |
97b639ba | 9451 | bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc); |
ad8e1ba5 | 9452 | loc += 4; |
ac2df442 | 9453 | off -= size - 4; |
ad8e1ba5 | 9454 | } |
97b639ba | 9455 | bfd_put_32 (htab->stub_bfd, B_DOT | (off & 0x3fffffc), loc); |
ad8e1ba5 | 9456 | |
5c3dead3 AM |
9457 | if (off + (1 << 25) >= (bfd_vma) (1 << 26)) |
9458 | { | |
9459 | (*_bfd_error_handler) (_("long branch stub `%s' offset overflow"), | |
9460 | stub_entry->root.string); | |
9461 | htab->stub_error = TRUE; | |
9462 | return FALSE; | |
9463 | } | |
ee75fd95 AM |
9464 | |
9465 | if (info->emitrelocations) | |
9466 | { | |
176a0d42 AM |
9467 | r = get_relocs (stub_entry->stub_sec, 1); |
9468 | if (r == NULL) | |
9469 | return FALSE; | |
ee75fd95 AM |
9470 | r->r_offset = loc - stub_entry->stub_sec->contents; |
9471 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL24); | |
9472 | r->r_addend = dest; | |
9473 | if (stub_entry->h != NULL) | |
9474 | { | |
9475 | struct elf_link_hash_entry **hashes; | |
9476 | unsigned long symndx; | |
9477 | struct ppc_link_hash_entry *h; | |
9478 | ||
9479 | hashes = elf_sym_hashes (htab->stub_bfd); | |
9480 | if (hashes == NULL) | |
9481 | { | |
9482 | bfd_size_type hsize; | |
9483 | ||
9484 | hsize = (htab->stub_globals + 1) * sizeof (*hashes); | |
9485 | hashes = bfd_zalloc (htab->stub_bfd, hsize); | |
9486 | if (hashes == NULL) | |
9487 | return FALSE; | |
9488 | elf_sym_hashes (htab->stub_bfd) = hashes; | |
9489 | htab->stub_globals = 1; | |
9490 | } | |
9491 | symndx = htab->stub_globals++; | |
9492 | h = stub_entry->h; | |
9493 | hashes[symndx] = &h->elf; | |
9494 | r->r_info = ELF64_R_INFO (symndx, R_PPC64_REL24); | |
9495 | if (h->oh != NULL && h->oh->is_func) | |
b31867b6 | 9496 | h = ppc_follow_link (h->oh); |
ee75fd95 AM |
9497 | if (h->elf.root.u.def.section != stub_entry->target_section) |
9498 | /* H is an opd symbol. The addend must be zero. */ | |
9499 | r->r_addend = 0; | |
9500 | else | |
9501 | { | |
9502 | off = (h->elf.root.u.def.value | |
9503 | + h->elf.root.u.def.section->output_offset | |
9504 | + h->elf.root.u.def.section->output_section->vma); | |
9505 | r->r_addend -= off; | |
9506 | } | |
9507 | } | |
9508 | } | |
721956f4 | 9509 | break; |
e86ce104 | 9510 | |
721956f4 | 9511 | case ppc_stub_plt_branch: |
ad8e1ba5 | 9512 | case ppc_stub_plt_branch_r2off: |
721956f4 AM |
9513 | br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table, |
9514 | stub_entry->root.string + 9, | |
b34976b6 | 9515 | FALSE, FALSE); |
721956f4 AM |
9516 | if (br_entry == NULL) |
9517 | { | |
9518 | (*_bfd_error_handler) (_("can't find branch stub `%s'"), | |
5c3dead3 | 9519 | stub_entry->root.string); |
b34976b6 AM |
9520 | htab->stub_error = TRUE; |
9521 | return FALSE; | |
721956f4 AM |
9522 | } |
9523 | ||
176a0d42 AM |
9524 | dest = (stub_entry->target_value |
9525 | + stub_entry->target_section->output_offset | |
9526 | + stub_entry->target_section->output_section->vma); | |
721956f4 | 9527 | |
176a0d42 | 9528 | bfd_put_64 (htab->brlt->owner, dest, |
4ce794b7 | 9529 | htab->brlt->contents + br_entry->offset); |
721956f4 | 9530 | |
f94498ff | 9531 | if (br_entry->iter == htab->stub_iteration) |
721956f4 | 9532 | { |
f94498ff | 9533 | br_entry->iter = 0; |
84f5d08e | 9534 | |
f94498ff | 9535 | if (htab->relbrlt != NULL) |
84f5d08e | 9536 | { |
f94498ff AM |
9537 | /* Create a reloc for the branch lookup table entry. */ |
9538 | Elf_Internal_Rela rela; | |
9539 | bfd_byte *rl; | |
9540 | ||
9541 | rela.r_offset = (br_entry->offset | |
9542 | + htab->brlt->output_offset | |
9543 | + htab->brlt->output_section->vma); | |
9544 | rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
176a0d42 | 9545 | rela.r_addend = dest; |
f94498ff AM |
9546 | |
9547 | rl = htab->relbrlt->contents; | |
9548 | rl += (htab->relbrlt->reloc_count++ | |
9549 | * sizeof (Elf64_External_Rela)); | |
9550 | bfd_elf64_swap_reloca_out (htab->relbrlt->owner, &rela, rl); | |
9551 | } | |
9552 | else if (info->emitrelocations) | |
9553 | { | |
176a0d42 AM |
9554 | r = get_relocs (htab->brlt, 1); |
9555 | if (r == NULL) | |
9556 | return FALSE; | |
9557 | /* brlt, being SEC_LINKER_CREATED does not go through the | |
9558 | normal reloc processing. Symbols and offsets are not | |
9559 | translated from input file to output file form, so | |
9560 | set up the offset per the output file. */ | |
f94498ff AM |
9561 | r->r_offset = (br_entry->offset |
9562 | + htab->brlt->output_offset | |
9563 | + htab->brlt->output_section->vma); | |
9564 | r->r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
176a0d42 | 9565 | r->r_addend = dest; |
84f5d08e | 9566 | } |
84f5d08e | 9567 | } |
721956f4 | 9568 | |
176a0d42 AM |
9569 | dest = (br_entry->offset |
9570 | + htab->brlt->output_offset | |
9571 | + htab->brlt->output_section->vma); | |
9572 | ||
9573 | off = (dest | |
4ce794b7 | 9574 | - elf_gp (htab->brlt->output_section->owner) |
ad8e1ba5 | 9575 | - htab->stub_group[stub_entry->id_sec->id].toc_off); |
721956f4 | 9576 | |
ad8e1ba5 | 9577 | if (off + 0x80008000 > 0xffffffff || (off & 7) != 0) |
5d1634d7 AM |
9578 | { |
9579 | (*_bfd_error_handler) | |
e86ce104 | 9580 | (_("linkage table error against `%s'"), |
721956f4 | 9581 | stub_entry->root.string); |
5d1634d7 | 9582 | bfd_set_error (bfd_error_bad_value); |
b34976b6 AM |
9583 | htab->stub_error = TRUE; |
9584 | return FALSE; | |
5d1634d7 | 9585 | } |
41bd81ab | 9586 | |
176a0d42 AM |
9587 | if (info->emitrelocations) |
9588 | { | |
9589 | r = get_relocs (stub_entry->stub_sec, 1 + (PPC_HA (off) != 0)); | |
9590 | if (r == NULL) | |
9591 | return FALSE; | |
9592 | r[0].r_offset = loc - stub_entry->stub_sec->contents; | |
7cfbafbc AM |
9593 | if (bfd_big_endian (info->output_bfd)) |
9594 | r[0].r_offset += 2; | |
176a0d42 AM |
9595 | if (stub_entry->stub_type == ppc_stub_plt_branch_r2off) |
9596 | r[0].r_offset += 4; | |
9597 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); | |
9598 | r[0].r_addend = dest; | |
9599 | if (PPC_HA (off) != 0) | |
9600 | { | |
9601 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA); | |
9602 | r[1].r_offset = r[0].r_offset + 4; | |
9603 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); | |
9604 | r[1].r_addend = r[0].r_addend; | |
9605 | } | |
9606 | } | |
9607 | ||
ad8e1ba5 AM |
9608 | if (stub_entry->stub_type != ppc_stub_plt_branch_r2off) |
9609 | { | |
176a0d42 | 9610 | if (PPC_HA (off) != 0) |
ac2df442 AM |
9611 | { |
9612 | size = 16; | |
176a0d42 | 9613 | bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (off), loc); |
ac2df442 | 9614 | loc += 4; |
176a0d42 | 9615 | bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (off), loc); |
ac2df442 AM |
9616 | } |
9617 | else | |
9618 | { | |
9619 | size = 12; | |
176a0d42 | 9620 | bfd_put_32 (htab->stub_bfd, LD_R11_0R2 | PPC_LO (off), loc); |
ac2df442 | 9621 | } |
ad8e1ba5 AM |
9622 | } |
9623 | else | |
9624 | { | |
9625 | bfd_vma r2off; | |
9626 | ||
9627 | r2off = (htab->stub_group[stub_entry->target_section->id].toc_off | |
9628 | - htab->stub_group[stub_entry->id_sec->id].toc_off); | |
97b639ba | 9629 | bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc); |
ad8e1ba5 | 9630 | loc += 4; |
ac2df442 | 9631 | size = 20; |
176a0d42 | 9632 | if (PPC_HA (off) != 0) |
ac2df442 AM |
9633 | { |
9634 | size += 4; | |
176a0d42 | 9635 | bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (off), loc); |
ac2df442 | 9636 | loc += 4; |
176a0d42 | 9637 | bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (off), loc); |
ac2df442 AM |
9638 | loc += 4; |
9639 | } | |
9640 | else | |
9641 | { | |
176a0d42 | 9642 | bfd_put_32 (htab->stub_bfd, LD_R11_0R2 | PPC_LO (off), loc); |
ac2df442 AM |
9643 | loc += 4; |
9644 | } | |
9645 | ||
9646 | if (PPC_HA (r2off) != 0) | |
9647 | { | |
9648 | size += 4; | |
9649 | bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc); | |
9650 | loc += 4; | |
9651 | } | |
97b639ba | 9652 | bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc); |
ad8e1ba5 AM |
9653 | } |
9654 | loc += 4; | |
97b639ba | 9655 | bfd_put_32 (htab->stub_bfd, MTCTR_R11, loc); |
ad8e1ba5 | 9656 | loc += 4; |
97b639ba | 9657 | bfd_put_32 (htab->stub_bfd, BCTR, loc); |
721956f4 | 9658 | break; |
5d1634d7 | 9659 | |
721956f4 | 9660 | case ppc_stub_plt_call: |
e054468f | 9661 | if (stub_entry->h != NULL |
b31867b6 AM |
9662 | && stub_entry->h->is_func_descriptor |
9663 | && stub_entry->h->oh != NULL) | |
c862ae31 | 9664 | { |
b31867b6 AM |
9665 | struct ppc_link_hash_entry *fh = ppc_follow_link (stub_entry->h->oh); |
9666 | ||
9667 | /* If the old-ABI "dot-symbol" is undefined make it weak so | |
9668 | we don't get a link error from RELOC_FOR_GLOBAL_SYMBOL. | |
9669 | FIXME: We used to define the symbol on one of the call | |
9670 | stubs instead, which is why we test symbol section id | |
9671 | against htab->top_id in various places. Likely all | |
9672 | these checks could now disappear. */ | |
9673 | if (fh->elf.root.type == bfd_link_hash_undefined) | |
9674 | fh->elf.root.type = bfd_link_hash_undefweak; | |
c862ae31 AM |
9675 | } |
9676 | ||
721956f4 | 9677 | /* Now build the stub. */ |
e054468f | 9678 | dest = stub_entry->plt_ent->plt.offset & ~1; |
176a0d42 | 9679 | if (dest >= (bfd_vma) -2) |
721956f4 AM |
9680 | abort (); |
9681 | ||
e054468f | 9682 | plt = htab->plt; |
25f23106 AM |
9683 | if (!htab->elf.dynamic_sections_created |
9684 | || stub_entry->h == NULL | |
9685 | || stub_entry->h->elf.dynindx == -1) | |
e054468f AM |
9686 | plt = htab->iplt; |
9687 | ||
9688 | dest += plt->output_offset + plt->output_section->vma; | |
9689 | ||
9690 | if (stub_entry->h == NULL | |
9691 | && (stub_entry->plt_ent->plt.offset & 1) == 0) | |
9692 | { | |
9693 | Elf_Internal_Rela rela; | |
9694 | bfd_byte *rl; | |
9695 | ||
9696 | rela.r_offset = dest; | |
25f23106 | 9697 | rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL); |
e054468f AM |
9698 | rela.r_addend = (stub_entry->target_value |
9699 | + stub_entry->target_section->output_offset | |
9700 | + stub_entry->target_section->output_section->vma); | |
9701 | ||
25f23106 AM |
9702 | rl = (htab->reliplt->contents |
9703 | + (htab->reliplt->reloc_count++ | |
9704 | * sizeof (Elf64_External_Rela))); | |
9705 | bfd_elf64_swap_reloca_out (info->output_bfd, &rela, rl); | |
e054468f AM |
9706 | stub_entry->plt_ent->plt.offset |= 1; |
9707 | } | |
176a0d42 AM |
9708 | |
9709 | off = (dest | |
e054468f | 9710 | - elf_gp (plt->output_section->owner) |
176a0d42 | 9711 | - htab->stub_group[stub_entry->id_sec->id].toc_off); |
721956f4 | 9712 | |
ad8e1ba5 | 9713 | if (off + 0x80008000 > 0xffffffff || (off & 7) != 0) |
721956f4 AM |
9714 | { |
9715 | (*_bfd_error_handler) | |
9716 | (_("linkage table error against `%s'"), | |
e054468f AM |
9717 | stub_entry->h != NULL |
9718 | ? stub_entry->h->elf.root.root.string | |
9719 | : "<local sym>"); | |
721956f4 | 9720 | bfd_set_error (bfd_error_bad_value); |
b34976b6 AM |
9721 | htab->stub_error = TRUE; |
9722 | return FALSE; | |
721956f4 AM |
9723 | } |
9724 | ||
176a0d42 AM |
9725 | r = NULL; |
9726 | if (info->emitrelocations) | |
9727 | { | |
9728 | r = get_relocs (stub_entry->stub_sec, | |
9729 | (2 + (PPC_HA (off) != 0) | |
9730 | + (PPC_HA (off + 16) == PPC_HA (off)))); | |
9731 | if (r == NULL) | |
9732 | return FALSE; | |
9733 | r[0].r_offset = loc - stub_entry->stub_sec->contents; | |
7cfbafbc AM |
9734 | if (bfd_big_endian (info->output_bfd)) |
9735 | r[0].r_offset += 2; | |
176a0d42 AM |
9736 | r[0].r_addend = dest; |
9737 | } | |
a7f2871e AM |
9738 | if (stub_entry->h != NULL |
9739 | && (stub_entry->h == htab->tls_get_addr_fd | |
9740 | || stub_entry->h == htab->tls_get_addr) | |
9741 | && !htab->no_tls_get_addr_opt) | |
9742 | p = build_tls_get_addr_stub (htab->stub_bfd, loc, off, r); | |
9743 | else | |
9744 | p = build_plt_stub (htab->stub_bfd, loc, off, r); | |
721956f4 AM |
9745 | size = p - loc; |
9746 | break; | |
9747 | ||
9748 | default: | |
9749 | BFD_FAIL (); | |
b34976b6 | 9750 | return FALSE; |
721956f4 AM |
9751 | } |
9752 | ||
eea6121a | 9753 | stub_entry->stub_sec->size += size; |
97b639ba | 9754 | |
ee75fd95 | 9755 | if (htab->emit_stub_syms) |
97b639ba AM |
9756 | { |
9757 | struct elf_link_hash_entry *h; | |
ee75fd95 AM |
9758 | size_t len1, len2; |
9759 | char *name; | |
9760 | const char *const stub_str[] = { "long_branch", | |
9761 | "long_branch_r2off", | |
9762 | "plt_branch", | |
9763 | "plt_branch_r2off", | |
9764 | "plt_call" }; | |
9765 | ||
9766 | len1 = strlen (stub_str[stub_entry->stub_type - 1]); | |
9767 | len2 = strlen (stub_entry->root.string); | |
9768 | name = bfd_malloc (len1 + len2 + 2); | |
9769 | if (name == NULL) | |
9770 | return FALSE; | |
9771 | memcpy (name, stub_entry->root.string, 9); | |
9772 | memcpy (name + 9, stub_str[stub_entry->stub_type - 1], len1); | |
9773 | memcpy (name + len1 + 9, stub_entry->root.string + 8, len2 - 8 + 1); | |
9774 | h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE); | |
97b639ba AM |
9775 | if (h == NULL) |
9776 | return FALSE; | |
9777 | if (h->root.type == bfd_link_hash_new) | |
9778 | { | |
9779 | h->root.type = bfd_link_hash_defined; | |
9780 | h->root.u.def.section = stub_entry->stub_sec; | |
9781 | h->root.u.def.value = stub_entry->stub_offset; | |
f5385ebf AM |
9782 | h->ref_regular = 1; |
9783 | h->def_regular = 1; | |
9784 | h->ref_regular_nonweak = 1; | |
9785 | h->forced_local = 1; | |
9786 | h->non_elf = 0; | |
97b639ba AM |
9787 | } |
9788 | } | |
9789 | ||
b34976b6 | 9790 | return TRUE; |
721956f4 AM |
9791 | } |
9792 | ||
9793 | /* As above, but don't actually build the stub. Just bump offset so | |
9794 | we know stub section sizes, and select plt_branch stubs where | |
9795 | long_branch stubs won't do. */ | |
9796 | ||
b34976b6 | 9797 | static bfd_boolean |
4ce794b7 | 9798 | ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg) |
721956f4 AM |
9799 | { |
9800 | struct ppc_stub_hash_entry *stub_entry; | |
63bc6f6c | 9801 | struct bfd_link_info *info; |
721956f4 AM |
9802 | struct ppc_link_hash_table *htab; |
9803 | bfd_vma off; | |
9804 | int size; | |
9805 | ||
9806 | /* Massage our args to the form they really have. */ | |
9807 | stub_entry = (struct ppc_stub_hash_entry *) gen_entry; | |
63bc6f6c AM |
9808 | info = in_arg; |
9809 | ||
9810 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
9811 | if (htab == NULL) |
9812 | return FALSE; | |
721956f4 AM |
9813 | |
9814 | if (stub_entry->stub_type == ppc_stub_plt_call) | |
9815 | { | |
e054468f AM |
9816 | asection *plt; |
9817 | off = stub_entry->plt_ent->plt.offset & ~(bfd_vma) 1; | |
58ac9f71 | 9818 | if (off >= (bfd_vma) -2) |
411e1bfb | 9819 | abort (); |
e054468f | 9820 | plt = htab->plt; |
25f23106 AM |
9821 | if (!htab->elf.dynamic_sections_created |
9822 | || stub_entry->h == NULL | |
9823 | || stub_entry->h->elf.dynindx == -1) | |
e054468f AM |
9824 | plt = htab->iplt; |
9825 | off += (plt->output_offset | |
9826 | + plt->output_section->vma | |
9827 | - elf_gp (plt->output_section->owner) | |
ad8e1ba5 | 9828 | - htab->stub_group[stub_entry->id_sec->id].toc_off); |
721956f4 | 9829 | |
ad8e1ba5 | 9830 | size = PLT_CALL_STUB_SIZE; |
ac2df442 AM |
9831 | if (PPC_HA (off) == 0) |
9832 | size -= 4; | |
4ce794b7 | 9833 | if (PPC_HA (off + 16) != PPC_HA (off)) |
721956f4 | 9834 | size += 4; |
a7f2871e AM |
9835 | if (stub_entry->h != NULL |
9836 | && (stub_entry->h == htab->tls_get_addr_fd | |
9837 | || stub_entry->h == htab->tls_get_addr) | |
9838 | && !htab->no_tls_get_addr_opt) | |
9839 | size += 13 * 4; | |
176a0d42 AM |
9840 | if (info->emitrelocations) |
9841 | { | |
9842 | stub_entry->stub_sec->reloc_count | |
9843 | += 2 + (PPC_HA (off) != 0) + (PPC_HA (off + 16) == PPC_HA (off)); | |
9844 | stub_entry->stub_sec->flags |= SEC_RELOC; | |
9845 | } | |
721956f4 AM |
9846 | } |
9847 | else | |
9848 | { | |
ad8e1ba5 AM |
9849 | /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off |
9850 | variants. */ | |
ac2df442 AM |
9851 | bfd_vma r2off = 0; |
9852 | ||
721956f4 AM |
9853 | off = (stub_entry->target_value |
9854 | + stub_entry->target_section->output_offset | |
9855 | + stub_entry->target_section->output_section->vma); | |
eea6121a | 9856 | off -= (stub_entry->stub_sec->size |
721956f4 AM |
9857 | + stub_entry->stub_sec->output_offset |
9858 | + stub_entry->stub_sec->output_section->vma); | |
9859 | ||
ad8e1ba5 AM |
9860 | /* Reset the stub type from the plt variant in case we now |
9861 | can reach with a shorter stub. */ | |
9862 | if (stub_entry->stub_type >= ppc_stub_plt_branch) | |
9863 | stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch; | |
9864 | ||
9865 | size = 4; | |
9866 | if (stub_entry->stub_type == ppc_stub_long_branch_r2off) | |
9867 | { | |
ac2df442 AM |
9868 | r2off = (htab->stub_group[stub_entry->target_section->id].toc_off |
9869 | - htab->stub_group[stub_entry->id_sec->id].toc_off); | |
9870 | size = 12; | |
9871 | if (PPC_HA (r2off) != 0) | |
9872 | size = 16; | |
9873 | off -= size - 4; | |
ad8e1ba5 AM |
9874 | } |
9875 | ||
9876 | /* If the branch offset if too big, use a ppc_stub_plt_branch. */ | |
721956f4 AM |
9877 | if (off + (1 << 25) >= (bfd_vma) (1 << 26)) |
9878 | { | |
9879 | struct ppc_branch_hash_entry *br_entry; | |
9880 | ||
9881 | br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table, | |
9882 | stub_entry->root.string + 9, | |
b34976b6 | 9883 | TRUE, FALSE); |
721956f4 AM |
9884 | if (br_entry == NULL) |
9885 | { | |
9886 | (*_bfd_error_handler) (_("can't build branch stub `%s'"), | |
5c3dead3 | 9887 | stub_entry->root.string); |
b34976b6 AM |
9888 | htab->stub_error = TRUE; |
9889 | return FALSE; | |
721956f4 AM |
9890 | } |
9891 | ||
9892 | if (br_entry->iter != htab->stub_iteration) | |
9893 | { | |
9894 | br_entry->iter = htab->stub_iteration; | |
eea6121a AM |
9895 | br_entry->offset = htab->brlt->size; |
9896 | htab->brlt->size += 8; | |
63bc6f6c | 9897 | |
ee75fd95 | 9898 | if (htab->relbrlt != NULL) |
eea6121a | 9899 | htab->relbrlt->size += sizeof (Elf64_External_Rela); |
84f5d08e AM |
9900 | else if (info->emitrelocations) |
9901 | { | |
9902 | htab->brlt->reloc_count += 1; | |
9903 | htab->brlt->flags |= SEC_RELOC; | |
9904 | } | |
721956f4 | 9905 | } |
ad8e1ba5 AM |
9906 | |
9907 | stub_entry->stub_type += ppc_stub_plt_branch - ppc_stub_long_branch; | |
ac2df442 AM |
9908 | off = (br_entry->offset |
9909 | + htab->brlt->output_offset | |
9910 | + htab->brlt->output_section->vma | |
9911 | - elf_gp (htab->brlt->output_section->owner) | |
9912 | - htab->stub_group[stub_entry->id_sec->id].toc_off); | |
9913 | ||
176a0d42 AM |
9914 | if (info->emitrelocations) |
9915 | { | |
9916 | stub_entry->stub_sec->reloc_count += 1 + (PPC_HA (off) != 0); | |
9917 | stub_entry->stub_sec->flags |= SEC_RELOC; | |
9918 | } | |
9919 | ||
ac2df442 AM |
9920 | if (stub_entry->stub_type != ppc_stub_plt_branch_r2off) |
9921 | { | |
9922 | size = 12; | |
176a0d42 | 9923 | if (PPC_HA (off) != 0) |
ac2df442 AM |
9924 | size = 16; |
9925 | } | |
9926 | else | |
9927 | { | |
9928 | size = 20; | |
176a0d42 | 9929 | if (PPC_HA (off) != 0) |
ac2df442 AM |
9930 | size += 4; |
9931 | ||
9932 | if (PPC_HA (r2off) != 0) | |
9933 | size += 4; | |
9934 | } | |
721956f4 | 9935 | } |
84f5d08e AM |
9936 | else if (info->emitrelocations) |
9937 | { | |
9938 | stub_entry->stub_sec->reloc_count += 1; | |
9939 | stub_entry->stub_sec->flags |= SEC_RELOC; | |
9940 | } | |
721956f4 AM |
9941 | } |
9942 | ||
eea6121a | 9943 | stub_entry->stub_sec->size += size; |
b34976b6 | 9944 | return TRUE; |
721956f4 AM |
9945 | } |
9946 | ||
9947 | /* Set up various things so that we can make a list of input sections | |
9948 | for each output section included in the link. Returns -1 on error, | |
cedb70c5 | 9949 | 0 when no stubs will be needed, and 1 on success. */ |
721956f4 AM |
9950 | |
9951 | int | |
927be08e AM |
9952 | ppc64_elf_setup_section_lists |
9953 | (struct bfd_link_info *info, | |
9954 | asection *(*add_stub_section) (const char *, asection *), | |
9955 | void (*layout_sections_again) (void)) | |
721956f4 AM |
9956 | { |
9957 | bfd *input_bfd; | |
734b6cf9 | 9958 | int top_id, top_index, id; |
721956f4 | 9959 | asection *section; |
734b6cf9 | 9960 | asection **input_list; |
721956f4 AM |
9961 | bfd_size_type amt; |
9962 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
9963 | ||
4dfe6ac6 NC |
9964 | if (htab == NULL) |
9965 | return -1; | |
927be08e AM |
9966 | /* Stash our params away. */ |
9967 | htab->add_stub_section = add_stub_section; | |
9968 | htab->layout_sections_again = layout_sections_again; | |
4c52953f | 9969 | |
4ce794b7 | 9970 | if (htab->brlt == NULL) |
721956f4 AM |
9971 | return 0; |
9972 | ||
1e2f5b6e | 9973 | /* Find the top input section id. */ |
3d6f9012 | 9974 | for (input_bfd = info->input_bfds, top_id = 3; |
721956f4 AM |
9975 | input_bfd != NULL; |
9976 | input_bfd = input_bfd->link_next) | |
9977 | { | |
721956f4 AM |
9978 | for (section = input_bfd->sections; |
9979 | section != NULL; | |
9980 | section = section->next) | |
9981 | { | |
9982 | if (top_id < section->id) | |
9983 | top_id = section->id; | |
9984 | } | |
9985 | } | |
721956f4 | 9986 | |
8f3bab57 | 9987 | htab->top_id = top_id; |
721956f4 | 9988 | amt = sizeof (struct map_stub) * (top_id + 1); |
4ce794b7 | 9989 | htab->stub_group = bfd_zmalloc (amt); |
721956f4 AM |
9990 | if (htab->stub_group == NULL) |
9991 | return -1; | |
9992 | ||
3d6f9012 AM |
9993 | /* Set toc_off for com, und, abs and ind sections. */ |
9994 | for (id = 0; id < 3; id++) | |
9995 | htab->stub_group[id].toc_off = TOC_BASE_OFF; | |
721956f4 | 9996 | |
734b6cf9 AM |
9997 | /* We can't use output_bfd->section_count here to find the top output |
9998 | section index as some sections may have been removed, and | |
8423293d | 9999 | strip_excluded_output_sections doesn't renumber the indices. */ |
927be08e | 10000 | for (section = info->output_bfd->sections, top_index = 0; |
734b6cf9 AM |
10001 | section != NULL; |
10002 | section = section->next) | |
10003 | { | |
10004 | if (top_index < section->index) | |
10005 | top_index = section->index; | |
10006 | } | |
10007 | ||
10008 | htab->top_index = top_index; | |
10009 | amt = sizeof (asection *) * (top_index + 1); | |
4ce794b7 | 10010 | input_list = bfd_zmalloc (amt); |
734b6cf9 AM |
10011 | htab->input_list = input_list; |
10012 | if (input_list == NULL) | |
10013 | return -1; | |
10014 | ||
721956f4 AM |
10015 | return 1; |
10016 | } | |
10017 | ||
927be08e AM |
10018 | /* Set up for first pass at multitoc partitioning. */ |
10019 | ||
10020 | void | |
10021 | ppc64_elf_start_multitoc_partition (struct bfd_link_info *info) | |
10022 | { | |
10023 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
10024 | ||
10025 | elf_gp (info->output_bfd) = ppc64_elf_toc (info->output_bfd); | |
10026 | htab->toc_curr = elf_gp (info->output_bfd); | |
10027 | htab->toc_bfd = NULL; | |
10028 | htab->toc_first_sec = NULL; | |
10029 | } | |
10030 | ||
e717da7e AM |
10031 | /* The linker repeatedly calls this function for each TOC input section |
10032 | and linker generated GOT section. Group input bfds such that the toc | |
927be08e | 10033 | within a group is less than 64k in size. */ |
ad8e1ba5 | 10034 | |
927be08e | 10035 | bfd_boolean |
4ce794b7 | 10036 | ppc64_elf_next_toc_section (struct bfd_link_info *info, asection *isec) |
ad8e1ba5 AM |
10037 | { |
10038 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
d77c8a4b | 10039 | bfd_vma addr, off, limit; |
ad8e1ba5 | 10040 | |
4dfe6ac6 NC |
10041 | if (htab == NULL) |
10042 | return FALSE; | |
10043 | ||
927be08e | 10044 | if (!htab->second_toc_pass) |
4c52953f | 10045 | { |
927be08e | 10046 | /* Keep track of the first .toc or .got section for this input bfd. */ |
bf102f86 AM |
10047 | if (htab->toc_bfd != isec->owner) |
10048 | { | |
10049 | htab->toc_bfd = isec->owner; | |
10050 | htab->toc_first_sec = isec; | |
10051 | } | |
927be08e | 10052 | |
bf102f86 AM |
10053 | addr = isec->output_offset + isec->output_section->vma; |
10054 | off = addr - htab->toc_curr; | |
d77c8a4b AM |
10055 | limit = 0x80008000; |
10056 | if (ppc64_elf_tdata (isec->owner)->has_small_toc_reloc) | |
10057 | limit = 0x10000; | |
10058 | if (off + isec->size > limit) | |
bf102f86 AM |
10059 | { |
10060 | addr = (htab->toc_first_sec->output_offset | |
10061 | + htab->toc_first_sec->output_section->vma); | |
10062 | htab->toc_curr = addr; | |
10063 | } | |
99877b66 | 10064 | |
927be08e AM |
10065 | /* toc_curr is the base address of this toc group. Set elf_gp |
10066 | for the input section to be the offset relative to the | |
10067 | output toc base plus 0x8000. Making the input elf_gp an | |
10068 | offset allows us to move the toc as a whole without | |
10069 | recalculating input elf_gp. */ | |
10070 | off = htab->toc_curr - elf_gp (isec->output_section->owner); | |
10071 | off += TOC_BASE_OFF; | |
10072 | ||
10073 | /* Die if someone uses a linker script that doesn't keep input | |
10074 | file .toc and .got together. */ | |
10075 | if (elf_gp (isec->owner) != 0 | |
10076 | && elf_gp (isec->owner) != off) | |
10077 | return FALSE; | |
10078 | ||
10079 | elf_gp (isec->owner) = off; | |
10080 | return TRUE; | |
4c52953f | 10081 | } |
927be08e AM |
10082 | |
10083 | /* During the second pass toc_first_sec points to the start of | |
10084 | a toc group, and toc_curr is used to track the old elf_gp. | |
10085 | We use toc_bfd to ensure we only look at each bfd once. */ | |
10086 | if (htab->toc_bfd == isec->owner) | |
10087 | return TRUE; | |
10088 | htab->toc_bfd = isec->owner; | |
10089 | ||
10090 | if (htab->toc_first_sec == NULL | |
10091 | || htab->toc_curr != elf_gp (isec->owner)) | |
10092 | { | |
10093 | htab->toc_curr = elf_gp (isec->owner); | |
10094 | htab->toc_first_sec = isec; | |
10095 | } | |
10096 | addr = (htab->toc_first_sec->output_offset | |
10097 | + htab->toc_first_sec->output_section->vma); | |
10098 | off = addr - elf_gp (isec->output_section->owner) + TOC_BASE_OFF; | |
10099 | elf_gp (isec->owner) = off; | |
10100 | ||
10101 | return TRUE; | |
ad8e1ba5 AM |
10102 | } |
10103 | ||
927be08e AM |
10104 | /* Called via elf_link_hash_traverse to merge GOT entries for global |
10105 | symbol H. */ | |
10106 | ||
10107 | static bfd_boolean | |
10108 | merge_global_got (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED) | |
10109 | { | |
10110 | if (h->root.type == bfd_link_hash_indirect) | |
10111 | return TRUE; | |
10112 | ||
10113 | if (h->root.type == bfd_link_hash_warning) | |
10114 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
10115 | ||
10116 | merge_got_entries (&h->got.glist); | |
10117 | ||
10118 | return TRUE; | |
10119 | } | |
10120 | ||
10121 | /* Called via elf_link_hash_traverse to allocate GOT entries for global | |
10122 | symbol H. */ | |
10123 | ||
10124 | static bfd_boolean | |
10125 | reallocate_got (struct elf_link_hash_entry *h, void *inf) | |
10126 | { | |
10127 | struct got_entry *gent; | |
10128 | ||
10129 | if (h->root.type == bfd_link_hash_indirect) | |
10130 | return TRUE; | |
10131 | ||
10132 | if (h->root.type == bfd_link_hash_warning) | |
10133 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
10134 | ||
10135 | for (gent = h->got.glist; gent != NULL; gent = gent->next) | |
10136 | if (!gent->is_indirect) | |
10137 | allocate_got (h, (struct bfd_link_info *) inf, gent); | |
10138 | return TRUE; | |
10139 | } | |
10140 | ||
10141 | /* Called on the first multitoc pass after the last call to | |
10142 | ppc64_elf_next_toc_section. This function removes duplicate GOT | |
10143 | entries. */ | |
10144 | ||
10145 | bfd_boolean | |
10146 | ppc64_elf_layout_multitoc (struct bfd_link_info *info) | |
ad8e1ba5 AM |
10147 | { |
10148 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
927be08e AM |
10149 | struct bfd *ibfd, *ibfd2; |
10150 | bfd_boolean done_something; | |
10151 | ||
10152 | htab->multi_toc_needed = htab->toc_curr != elf_gp (info->output_bfd); | |
ad8e1ba5 | 10153 | |
7865406b AM |
10154 | if (!htab->do_multi_toc) |
10155 | return FALSE; | |
10156 | ||
d0fae19d | 10157 | /* Merge global sym got entries within a toc group. */ |
927be08e AM |
10158 | elf_link_hash_traverse (&htab->elf, merge_global_got, info); |
10159 | ||
10160 | /* And tlsld_got. */ | |
10161 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
10162 | { | |
10163 | struct got_entry *ent, *ent2; | |
10164 | ||
10165 | if (!is_ppc64_elf (ibfd)) | |
10166 | continue; | |
10167 | ||
10168 | ent = ppc64_tlsld_got (ibfd); | |
10169 | if (!ent->is_indirect | |
10170 | && ent->got.offset != (bfd_vma) -1) | |
10171 | { | |
10172 | for (ibfd2 = ibfd->link_next; ibfd2 != NULL; ibfd2 = ibfd2->link_next) | |
10173 | { | |
10174 | if (!is_ppc64_elf (ibfd2)) | |
10175 | continue; | |
10176 | ||
10177 | ent2 = ppc64_tlsld_got (ibfd2); | |
10178 | if (!ent2->is_indirect | |
10179 | && ent2->got.offset != (bfd_vma) -1 | |
10180 | && elf_gp (ibfd2) == elf_gp (ibfd)) | |
10181 | { | |
10182 | ent2->is_indirect = TRUE; | |
10183 | ent2->got.ent = ent; | |
10184 | } | |
10185 | } | |
10186 | } | |
10187 | } | |
10188 | ||
10189 | /* Zap sizes of got sections. */ | |
10190 | htab->reliplt->rawsize = htab->reliplt->size; | |
10191 | htab->reliplt->size -= htab->got_reli_size; | |
10192 | htab->got_reli_size = 0; | |
10193 | ||
10194 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
10195 | { | |
10196 | asection *got, *relgot; | |
10197 | ||
10198 | if (!is_ppc64_elf (ibfd)) | |
10199 | continue; | |
10200 | ||
10201 | got = ppc64_elf_tdata (ibfd)->got; | |
10202 | if (got != NULL) | |
10203 | { | |
10204 | got->rawsize = got->size; | |
10205 | got->size = 0; | |
10206 | relgot = ppc64_elf_tdata (ibfd)->relgot; | |
10207 | relgot->rawsize = relgot->size; | |
10208 | relgot->size = 0; | |
10209 | } | |
10210 | } | |
10211 | ||
10212 | /* Now reallocate the got, local syms first. We don't need to | |
10213 | allocate section contents again since we never increase size. */ | |
10214 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
10215 | { | |
10216 | struct got_entry **lgot_ents; | |
10217 | struct got_entry **end_lgot_ents; | |
10218 | struct plt_entry **local_plt; | |
10219 | struct plt_entry **end_local_plt; | |
f961d9dd | 10220 | unsigned char *lgot_masks; |
927be08e AM |
10221 | bfd_size_type locsymcount; |
10222 | Elf_Internal_Shdr *symtab_hdr; | |
10223 | asection *s, *srel; | |
10224 | ||
10225 | if (!is_ppc64_elf (ibfd)) | |
10226 | continue; | |
10227 | ||
10228 | lgot_ents = elf_local_got_ents (ibfd); | |
10229 | if (!lgot_ents) | |
10230 | continue; | |
10231 | ||
10232 | symtab_hdr = &elf_symtab_hdr (ibfd); | |
10233 | locsymcount = symtab_hdr->sh_info; | |
10234 | end_lgot_ents = lgot_ents + locsymcount; | |
10235 | local_plt = (struct plt_entry **) end_lgot_ents; | |
10236 | end_local_plt = local_plt + locsymcount; | |
f961d9dd | 10237 | lgot_masks = (unsigned char *) end_local_plt; |
927be08e AM |
10238 | s = ppc64_elf_tdata (ibfd)->got; |
10239 | srel = ppc64_elf_tdata (ibfd)->relgot; | |
10240 | for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks) | |
10241 | { | |
10242 | struct got_entry *ent; | |
10243 | ||
10244 | for (ent = *lgot_ents; ent != NULL; ent = ent->next) | |
d0fae19d AM |
10245 | { |
10246 | unsigned int num = 1; | |
10247 | ent->got.offset = s->size; | |
10248 | if ((ent->tls_type & *lgot_masks & TLS_GD) != 0) | |
10249 | num = 2; | |
10250 | s->size += num * 8; | |
10251 | if (info->shared) | |
10252 | srel->size += num * sizeof (Elf64_External_Rela); | |
10253 | else if ((*lgot_masks & PLT_IFUNC) != 0) | |
10254 | { | |
10255 | htab->reliplt->size | |
10256 | += num * sizeof (Elf64_External_Rela); | |
10257 | htab->got_reli_size | |
10258 | += num * sizeof (Elf64_External_Rela); | |
10259 | } | |
10260 | } | |
927be08e AM |
10261 | } |
10262 | } | |
10263 | ||
10264 | elf_link_hash_traverse (&htab->elf, reallocate_got, info); | |
10265 | ||
10266 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
10267 | { | |
10268 | struct got_entry *ent; | |
10269 | ||
10270 | if (!is_ppc64_elf (ibfd)) | |
10271 | continue; | |
10272 | ||
10273 | ent = ppc64_tlsld_got (ibfd); | |
10274 | if (!ent->is_indirect | |
10275 | && ent->got.offset != (bfd_vma) -1) | |
10276 | { | |
10277 | asection *s = ppc64_elf_tdata (ibfd)->got; | |
10278 | ent->got.offset = s->size; | |
10279 | s->size += 16; | |
10280 | if (info->shared) | |
10281 | { | |
10282 | asection *srel = ppc64_elf_tdata (ibfd)->relgot; | |
10283 | srel->size += sizeof (Elf64_External_Rela); | |
10284 | } | |
10285 | } | |
10286 | } | |
10287 | ||
10288 | done_something = htab->reliplt->rawsize != htab->reliplt->size; | |
10289 | if (!done_something) | |
10290 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
10291 | { | |
10292 | asection *got; | |
10293 | ||
10294 | if (!is_ppc64_elf (ibfd)) | |
10295 | continue; | |
10296 | ||
10297 | got = ppc64_elf_tdata (ibfd)->got; | |
10298 | if (got != NULL) | |
10299 | { | |
10300 | done_something = got->rawsize != got->size; | |
10301 | if (done_something) | |
10302 | break; | |
10303 | } | |
10304 | } | |
10305 | ||
10306 | if (done_something) | |
10307 | (*htab->layout_sections_again) (); | |
10308 | ||
10309 | /* Set up for second pass over toc sections to recalculate elf_gp | |
10310 | on input sections. */ | |
10311 | htab->toc_bfd = NULL; | |
10312 | htab->toc_first_sec = NULL; | |
10313 | htab->second_toc_pass = TRUE; | |
10314 | return done_something; | |
10315 | } | |
10316 | ||
10317 | /* Called after second pass of multitoc partitioning. */ | |
10318 | ||
10319 | void | |
10320 | ppc64_elf_finish_multitoc_partition (struct bfd_link_info *info) | |
10321 | { | |
10322 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
10323 | ||
10324 | /* After the second pass, toc_curr tracks the TOC offset used | |
10325 | for code sections below in ppc64_elf_next_input_section. */ | |
3d6f9012 | 10326 | htab->toc_curr = TOC_BASE_OFF; |
ad8e1ba5 AM |
10327 | } |
10328 | ||
9b5ecbd0 AM |
10329 | /* No toc references were found in ISEC. If the code in ISEC makes no |
10330 | calls, then there's no need to use toc adjusting stubs when branching | |
10331 | into ISEC. Actually, indirect calls from ISEC are OK as they will | |
4c52953f AM |
10332 | load r2. Returns -1 on error, 0 for no stub needed, 1 for stub |
10333 | needed, and 2 if a cyclical call-graph was found but no other reason | |
10334 | for a stub was detected. If called from the top level, a return of | |
10335 | 2 means the same as a return of 0. */ | |
9b5ecbd0 AM |
10336 | |
10337 | static int | |
4ce794b7 | 10338 | toc_adjusting_stub_needed (struct bfd_link_info *info, asection *isec) |
9b5ecbd0 | 10339 | { |
9b5ecbd0 | 10340 | int ret; |
70cc837d AM |
10341 | |
10342 | /* Mark this section as checked. */ | |
10343 | isec->call_check_done = 1; | |
9b5ecbd0 | 10344 | |
772119ce AM |
10345 | /* We know none of our code bearing sections will need toc stubs. */ |
10346 | if ((isec->flags & SEC_LINKER_CREATED) != 0) | |
10347 | return 0; | |
10348 | ||
eea6121a | 10349 | if (isec->size == 0) |
082c50f8 AM |
10350 | return 0; |
10351 | ||
4c52953f AM |
10352 | if (isec->output_section == NULL) |
10353 | return 0; | |
10354 | ||
4c52953f | 10355 | ret = 0; |
70cc837d | 10356 | if (isec->reloc_count != 0) |
9b5ecbd0 | 10357 | { |
70cc837d AM |
10358 | Elf_Internal_Rela *relstart, *rel; |
10359 | Elf_Internal_Sym *local_syms; | |
10360 | struct ppc_link_hash_table *htab; | |
2917689a | 10361 | |
70cc837d AM |
10362 | relstart = _bfd_elf_link_read_relocs (isec->owner, isec, NULL, NULL, |
10363 | info->keep_memory); | |
10364 | if (relstart == NULL) | |
10365 | return -1; | |
90aecf7a | 10366 | |
70cc837d AM |
10367 | /* Look for branches to outside of this section. */ |
10368 | local_syms = NULL; | |
10369 | htab = ppc_hash_table (info); | |
10370 | if (htab == NULL) | |
10371 | return -1; | |
4c52953f | 10372 | |
70cc837d | 10373 | for (rel = relstart; rel < relstart + isec->reloc_count; ++rel) |
4c52953f | 10374 | { |
70cc837d AM |
10375 | enum elf_ppc64_reloc_type r_type; |
10376 | unsigned long r_symndx; | |
10377 | struct elf_link_hash_entry *h; | |
10378 | struct ppc_link_hash_entry *eh; | |
10379 | Elf_Internal_Sym *sym; | |
10380 | asection *sym_sec; | |
10381 | struct _opd_sec_data *opd; | |
10382 | bfd_vma sym_value; | |
10383 | bfd_vma dest; | |
10384 | ||
10385 | r_type = ELF64_R_TYPE (rel->r_info); | |
10386 | if (r_type != R_PPC64_REL24 | |
10387 | && r_type != R_PPC64_REL14 | |
10388 | && r_type != R_PPC64_REL14_BRTAKEN | |
10389 | && r_type != R_PPC64_REL14_BRNTAKEN) | |
10390 | continue; | |
4c52953f | 10391 | |
70cc837d AM |
10392 | r_symndx = ELF64_R_SYM (rel->r_info); |
10393 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, r_symndx, | |
10394 | isec->owner)) | |
4c52953f | 10395 | { |
70cc837d AM |
10396 | ret = -1; |
10397 | break; | |
10398 | } | |
4c52953f | 10399 | |
70cc837d AM |
10400 | /* Calls to dynamic lib functions go through a plt call stub |
10401 | that uses r2. */ | |
10402 | eh = (struct ppc_link_hash_entry *) h; | |
10403 | if (eh != NULL | |
10404 | && (eh->elf.plt.plist != NULL | |
10405 | || (eh->oh != NULL | |
10406 | && ppc_follow_link (eh->oh)->elf.plt.plist != NULL))) | |
10407 | { | |
10408 | ret = 1; | |
10409 | break; | |
4c52953f AM |
10410 | } |
10411 | ||
70cc837d AM |
10412 | if (sym_sec == NULL) |
10413 | /* Ignore other undefined symbols. */ | |
4c52953f | 10414 | continue; |
4c52953f | 10415 | |
70cc837d AM |
10416 | /* Assume branches to other sections not included in the |
10417 | link need stubs too, to cover -R and absolute syms. */ | |
10418 | if (sym_sec->output_section == NULL) | |
10419 | { | |
10420 | ret = 1; | |
10421 | break; | |
10422 | } | |
4c52953f | 10423 | |
70cc837d AM |
10424 | if (h == NULL) |
10425 | sym_value = sym->st_value; | |
10426 | else | |
10427 | { | |
10428 | if (h->root.type != bfd_link_hash_defined | |
10429 | && h->root.type != bfd_link_hash_defweak) | |
10430 | abort (); | |
10431 | sym_value = h->root.u.def.value; | |
10432 | } | |
10433 | sym_value += rel->r_addend; | |
4c52953f | 10434 | |
70cc837d AM |
10435 | /* If this branch reloc uses an opd sym, find the code section. */ |
10436 | opd = get_opd_info (sym_sec); | |
10437 | if (opd != NULL) | |
10438 | { | |
10439 | if (h == NULL && opd->adjust != NULL) | |
10440 | { | |
10441 | long adjust; | |
4c52953f | 10442 | |
70cc837d AM |
10443 | adjust = opd->adjust[sym->st_value / 8]; |
10444 | if (adjust == -1) | |
10445 | /* Assume deleted functions won't ever be called. */ | |
10446 | continue; | |
10447 | sym_value += adjust; | |
10448 | } | |
4c52953f | 10449 | |
70cc837d AM |
10450 | dest = opd_entry_value (sym_sec, sym_value, &sym_sec, NULL); |
10451 | if (dest == (bfd_vma) -1) | |
10452 | continue; | |
10453 | } | |
10454 | else | |
10455 | dest = (sym_value | |
10456 | + sym_sec->output_offset | |
10457 | + sym_sec->output_section->vma); | |
4c52953f | 10458 | |
70cc837d AM |
10459 | /* Ignore branch to self. */ |
10460 | if (sym_sec == isec) | |
10461 | continue; | |
4c52953f | 10462 | |
70cc837d AM |
10463 | /* If the called function uses the toc, we need a stub. */ |
10464 | if (sym_sec->has_toc_reloc | |
10465 | || sym_sec->makes_toc_func_call) | |
4c52953f | 10466 | { |
70cc837d | 10467 | ret = 1; |
4c52953f AM |
10468 | break; |
10469 | } | |
70cc837d AM |
10470 | |
10471 | /* Assume any branch that needs a long branch stub might in fact | |
10472 | need a plt_branch stub. A plt_branch stub uses r2. */ | |
10473 | else if (dest - (isec->output_offset | |
10474 | + isec->output_section->vma | |
10475 | + rel->r_offset) + (1 << 25) >= (2 << 25)) | |
4c52953f | 10476 | { |
70cc837d AM |
10477 | ret = 1; |
10478 | break; | |
10479 | } | |
10480 | ||
10481 | /* If calling back to a section in the process of being | |
10482 | tested, we can't say for sure that no toc adjusting stubs | |
10483 | are needed, so don't return zero. */ | |
10484 | else if (sym_sec->call_check_in_progress) | |
10485 | ret = 2; | |
10486 | ||
10487 | /* Branches to another section that itself doesn't have any TOC | |
10488 | references are OK. Recursively call ourselves to check. */ | |
10489 | else if (!sym_sec->call_check_done) | |
10490 | { | |
10491 | int recur; | |
10492 | ||
10493 | /* Mark current section as indeterminate, so that other | |
10494 | sections that call back to current won't be marked as | |
10495 | known. */ | |
10496 | isec->call_check_in_progress = 1; | |
10497 | recur = toc_adjusting_stub_needed (info, sym_sec); | |
10498 | isec->call_check_in_progress = 0; | |
10499 | ||
4c52953f AM |
10500 | if (recur != 0) |
10501 | { | |
70cc837d AM |
10502 | ret = recur; |
10503 | if (recur != 2) | |
10504 | break; | |
4c52953f AM |
10505 | } |
10506 | } | |
4c52953f | 10507 | } |
70cc837d AM |
10508 | |
10509 | if (local_syms != NULL | |
10510 | && (elf_symtab_hdr (isec->owner).contents | |
10511 | != (unsigned char *) local_syms)) | |
10512 | free (local_syms); | |
10513 | if (elf_section_data (isec)->relocs != relstart) | |
10514 | free (relstart); | |
9b5ecbd0 AM |
10515 | } |
10516 | ||
70cc837d AM |
10517 | if ((ret & 1) == 0 |
10518 | && isec->map_head.s != NULL | |
10519 | && (strcmp (isec->output_section->name, ".init") == 0 | |
10520 | || strcmp (isec->output_section->name, ".fini") == 0)) | |
10521 | { | |
10522 | if (isec->map_head.s->has_toc_reloc | |
10523 | || isec->map_head.s->makes_toc_func_call) | |
10524 | ret = 1; | |
10525 | else if (!isec->map_head.s->call_check_done) | |
10526 | { | |
10527 | int recur; | |
10528 | isec->call_check_in_progress = 1; | |
10529 | recur = toc_adjusting_stub_needed (info, isec->map_head.s); | |
10530 | isec->call_check_in_progress = 0; | |
10531 | if (recur != 0) | |
10532 | ret = recur; | |
10533 | } | |
10534 | } | |
10535 | ||
10536 | if (ret == 1) | |
10537 | isec->makes_toc_func_call = 1; | |
4c52953f | 10538 | |
9b5ecbd0 AM |
10539 | return ret; |
10540 | } | |
10541 | ||
721956f4 AM |
10542 | /* The linker repeatedly calls this function for each input section, |
10543 | in the order that input sections are linked into output sections. | |
10544 | Build lists of input sections to determine groupings between which | |
10545 | we may insert linker stubs. */ | |
10546 | ||
9b5ecbd0 | 10547 | bfd_boolean |
4ce794b7 | 10548 | ppc64_elf_next_input_section (struct bfd_link_info *info, asection *isec) |
721956f4 AM |
10549 | { |
10550 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
10551 | ||
4dfe6ac6 NC |
10552 | if (htab == NULL) |
10553 | return FALSE; | |
10554 | ||
734b6cf9 AM |
10555 | if ((isec->output_section->flags & SEC_CODE) != 0 |
10556 | && isec->output_section->index <= htab->top_index) | |
721956f4 | 10557 | { |
734b6cf9 | 10558 | asection **list = htab->input_list + isec->output_section->index; |
3d6f9012 | 10559 | /* Steal the link_sec pointer for our list. */ |
721956f4 | 10560 | #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec) |
3d6f9012 AM |
10561 | /* This happens to make the list in reverse order, |
10562 | which is what we want. */ | |
734b6cf9 AM |
10563 | PREV_SEC (isec) = *list; |
10564 | *list = isec; | |
721956f4 | 10565 | } |
ad8e1ba5 | 10566 | |
4c52953f | 10567 | if (htab->multi_toc_needed) |
9b5ecbd0 | 10568 | { |
4c52953f AM |
10569 | /* If a code section has a function that uses the TOC then we need |
10570 | to use the right TOC (obviously). Also, make sure that .opd gets | |
10571 | the correct TOC value for R_PPC64_TOC relocs that don't have or | |
f94498ff AM |
10572 | can't find their function symbol (shouldn't ever happen now). |
10573 | Also specially treat .fixup for the linux kernel. .fixup | |
10574 | contains branches, but only back to the function that hit an | |
10575 | exception. */ | |
10576 | if (isec->has_toc_reloc | |
10577 | || (isec->flags & SEC_CODE) == 0 | |
10578 | || strcmp (isec->name, ".fixup") == 0) | |
4c52953f AM |
10579 | { |
10580 | if (elf_gp (isec->owner) != 0) | |
10581 | htab->toc_curr = elf_gp (isec->owner); | |
10582 | } | |
70cc837d AM |
10583 | else if (!isec->call_check_done |
10584 | && toc_adjusting_stub_needed (info, isec) < 0) | |
10585 | return FALSE; | |
9b5ecbd0 | 10586 | } |
ad8e1ba5 AM |
10587 | |
10588 | /* Functions that don't use the TOC can belong in any TOC group. | |
10589 | Use the last TOC base. This happens to make _init and _fini | |
70cc837d | 10590 | pasting work, because the fragments generally don't use the TOC. */ |
ad8e1ba5 | 10591 | htab->stub_group[isec->id].toc_off = htab->toc_curr; |
9b5ecbd0 | 10592 | return TRUE; |
721956f4 AM |
10593 | } |
10594 | ||
70cc837d AM |
10595 | /* Check that all .init and .fini sections use the same toc, if they |
10596 | have toc relocs. */ | |
10597 | ||
10598 | static bfd_boolean | |
10599 | check_pasted_section (struct bfd_link_info *info, const char *name) | |
10600 | { | |
10601 | asection *o = bfd_get_section_by_name (info->output_bfd, name); | |
10602 | ||
10603 | if (o != NULL) | |
10604 | { | |
10605 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
10606 | bfd_vma toc_off = 0; | |
10607 | asection *i; | |
10608 | ||
10609 | for (i = o->map_head.s; i != NULL; i = i->map_head.s) | |
10610 | if (i->has_toc_reloc) | |
10611 | { | |
10612 | if (toc_off == 0) | |
10613 | toc_off = htab->stub_group[i->id].toc_off; | |
10614 | else if (toc_off != htab->stub_group[i->id].toc_off) | |
10615 | return FALSE; | |
10616 | } | |
10617 | /* Make sure the whole pasted function uses the same toc offset. */ | |
10618 | if (toc_off != 0) | |
10619 | for (i = o->map_head.s; i != NULL; i = i->map_head.s) | |
10620 | htab->stub_group[i->id].toc_off = toc_off; | |
10621 | } | |
10622 | return TRUE; | |
10623 | } | |
10624 | ||
10625 | bfd_boolean | |
10626 | ppc64_elf_check_init_fini (struct bfd_link_info *info) | |
10627 | { | |
10628 | return (check_pasted_section (info, ".init") | |
10629 | & check_pasted_section (info, ".fini")); | |
10630 | } | |
10631 | ||
721956f4 AM |
10632 | /* See whether we can group stub sections together. Grouping stub |
10633 | sections may result in fewer stubs. More importantly, we need to | |
10634 | put all .init* and .fini* stubs at the beginning of the .init or | |
10635 | .fini output sections respectively, because glibc splits the | |
10636 | _init and _fini functions into multiple parts. Putting a stub in | |
10637 | the middle of a function is not a good idea. */ | |
10638 | ||
10639 | static void | |
4ce794b7 AM |
10640 | group_sections (struct ppc_link_hash_table *htab, |
10641 | bfd_size_type stub_group_size, | |
10642 | bfd_boolean stubs_always_before_branch) | |
721956f4 | 10643 | { |
7c8fe5c4 AM |
10644 | asection **list; |
10645 | bfd_size_type stub14_group_size; | |
10646 | bfd_boolean suppress_size_errors; | |
10647 | ||
10648 | suppress_size_errors = FALSE; | |
10649 | stub14_group_size = stub_group_size; | |
10650 | if (stub_group_size == 1) | |
10651 | { | |
10652 | /* Default values. */ | |
10653 | if (stubs_always_before_branch) | |
10654 | { | |
10655 | stub_group_size = 0x1e00000; | |
10656 | stub14_group_size = 0x7800; | |
10657 | } | |
10658 | else | |
10659 | { | |
10660 | stub_group_size = 0x1c00000; | |
10661 | stub14_group_size = 0x7000; | |
10662 | } | |
10663 | suppress_size_errors = TRUE; | |
10664 | } | |
10665 | ||
10666 | list = htab->input_list + htab->top_index; | |
734b6cf9 | 10667 | do |
721956f4 | 10668 | { |
734b6cf9 AM |
10669 | asection *tail = *list; |
10670 | while (tail != NULL) | |
721956f4 | 10671 | { |
734b6cf9 AM |
10672 | asection *curr; |
10673 | asection *prev; | |
10674 | bfd_size_type total; | |
10675 | bfd_boolean big_sec; | |
10676 | bfd_vma curr_toc; | |
10677 | ||
10678 | curr = tail; | |
eea6121a | 10679 | total = tail->size; |
6bee8834 AM |
10680 | big_sec = total > (ppc64_elf_section_data (tail) != NULL |
10681 | && ppc64_elf_section_data (tail)->has_14bit_branch | |
7c8fe5c4 AM |
10682 | ? stub14_group_size : stub_group_size); |
10683 | if (big_sec && !suppress_size_errors) | |
5c3dead3 AM |
10684 | (*_bfd_error_handler) (_("%B section %A exceeds stub group size"), |
10685 | tail->owner, tail); | |
734b6cf9 AM |
10686 | curr_toc = htab->stub_group[tail->id].toc_off; |
10687 | ||
10688 | while ((prev = PREV_SEC (curr)) != NULL | |
10689 | && ((total += curr->output_offset - prev->output_offset) | |
6bee8834 AM |
10690 | < (ppc64_elf_section_data (prev) != NULL |
10691 | && ppc64_elf_section_data (prev)->has_14bit_branch | |
7c8fe5c4 | 10692 | ? stub14_group_size : stub_group_size)) |
ad8e1ba5 | 10693 | && htab->stub_group[prev->id].toc_off == curr_toc) |
734b6cf9 AM |
10694 | curr = prev; |
10695 | ||
10696 | /* OK, the size from the start of CURR to the end is less | |
10697 | than stub_group_size and thus can be handled by one stub | |
10698 | section. (or the tail section is itself larger than | |
10699 | stub_group_size, in which case we may be toast.) We | |
10700 | should really be keeping track of the total size of stubs | |
10701 | added here, as stubs contribute to the final output | |
10702 | section size. That's a little tricky, and this way will | |
10703 | only break if stubs added make the total size more than | |
10704 | 2^25, ie. for the default stub_group_size, if stubs total | |
10705 | more than 2097152 bytes, or nearly 75000 plt call stubs. */ | |
10706 | do | |
721956f4 AM |
10707 | { |
10708 | prev = PREV_SEC (tail); | |
734b6cf9 | 10709 | /* Set up this stub group. */ |
721956f4 AM |
10710 | htab->stub_group[tail->id].link_sec = curr; |
10711 | } | |
734b6cf9 AM |
10712 | while (tail != curr && (tail = prev) != NULL); |
10713 | ||
10714 | /* But wait, there's more! Input sections up to stub_group_size | |
10715 | bytes before the stub section can be handled by it too. | |
10716 | Don't do this if we have a really large section after the | |
10717 | stubs, as adding more stubs increases the chance that | |
10718 | branches may not reach into the stub section. */ | |
10719 | if (!stubs_always_before_branch && !big_sec) | |
10720 | { | |
10721 | total = 0; | |
10722 | while (prev != NULL | |
10723 | && ((total += tail->output_offset - prev->output_offset) | |
6bee8834 AM |
10724 | < (ppc64_elf_section_data (prev) != NULL |
10725 | && ppc64_elf_section_data (prev)->has_14bit_branch | |
7c8fe5c4 | 10726 | ? stub14_group_size : stub_group_size)) |
734b6cf9 AM |
10727 | && htab->stub_group[prev->id].toc_off == curr_toc) |
10728 | { | |
10729 | tail = prev; | |
10730 | prev = PREV_SEC (tail); | |
10731 | htab->stub_group[tail->id].link_sec = curr; | |
10732 | } | |
10733 | } | |
10734 | tail = prev; | |
721956f4 AM |
10735 | } |
10736 | } | |
734b6cf9 AM |
10737 | while (list-- != htab->input_list); |
10738 | free (htab->input_list); | |
721956f4 AM |
10739 | #undef PREV_SEC |
10740 | } | |
10741 | ||
721956f4 AM |
10742 | /* Determine and set the size of the stub section for a final link. |
10743 | ||
10744 | The basic idea here is to examine all the relocations looking for | |
10745 | PC-relative calls to a target that is unreachable with a "bl" | |
10746 | instruction. */ | |
10747 | ||
b34976b6 | 10748 | bfd_boolean |
927be08e | 10749 | ppc64_elf_size_stubs (struct bfd_link_info *info, bfd_signed_vma group_size) |
721956f4 AM |
10750 | { |
10751 | bfd_size_type stub_group_size; | |
b34976b6 | 10752 | bfd_boolean stubs_always_before_branch; |
721956f4 AM |
10753 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
10754 | ||
4dfe6ac6 NC |
10755 | if (htab == NULL) |
10756 | return FALSE; | |
10757 | ||
721956f4 AM |
10758 | stubs_always_before_branch = group_size < 0; |
10759 | if (group_size < 0) | |
10760 | stub_group_size = -group_size; | |
10761 | else | |
10762 | stub_group_size = group_size; | |
721956f4 AM |
10763 | |
10764 | group_sections (htab, stub_group_size, stubs_always_before_branch); | |
10765 | ||
721956f4 AM |
10766 | while (1) |
10767 | { | |
10768 | bfd *input_bfd; | |
10769 | unsigned int bfd_indx; | |
10770 | asection *stub_sec; | |
721956f4 AM |
10771 | |
10772 | htab->stub_iteration += 1; | |
721956f4 AM |
10773 | |
10774 | for (input_bfd = info->input_bfds, bfd_indx = 0; | |
10775 | input_bfd != NULL; | |
10776 | input_bfd = input_bfd->link_next, bfd_indx++) | |
10777 | { | |
10778 | Elf_Internal_Shdr *symtab_hdr; | |
10779 | asection *section; | |
6cdc0ccc | 10780 | Elf_Internal_Sym *local_syms = NULL; |
721956f4 | 10781 | |
0c8d6e5c | 10782 | if (!is_ppc64_elf (input_bfd)) |
67f93c31 AM |
10783 | continue; |
10784 | ||
721956f4 | 10785 | /* We'll need the symbol table in a second. */ |
0ffa91dd | 10786 | symtab_hdr = &elf_symtab_hdr (input_bfd); |
721956f4 AM |
10787 | if (symtab_hdr->sh_info == 0) |
10788 | continue; | |
10789 | ||
721956f4 AM |
10790 | /* Walk over each section attached to the input bfd. */ |
10791 | for (section = input_bfd->sections; | |
10792 | section != NULL; | |
10793 | section = section->next) | |
10794 | { | |
721956f4 | 10795 | Elf_Internal_Rela *internal_relocs, *irelaend, *irela; |
721956f4 AM |
10796 | |
10797 | /* If there aren't any relocs, then there's nothing more | |
10798 | to do. */ | |
10799 | if ((section->flags & SEC_RELOC) == 0 | |
12c0f757 AM |
10800 | || (section->flags & SEC_ALLOC) == 0 |
10801 | || (section->flags & SEC_LOAD) == 0 | |
10802 | || (section->flags & SEC_CODE) == 0 | |
721956f4 AM |
10803 | || section->reloc_count == 0) |
10804 | continue; | |
10805 | ||
10806 | /* If this section is a link-once section that will be | |
10807 | discarded, then don't create any stubs. */ | |
10808 | if (section->output_section == NULL | |
927be08e | 10809 | || section->output_section->owner != info->output_bfd) |
721956f4 AM |
10810 | continue; |
10811 | ||
1e2f5b6e AM |
10812 | /* Get the relocs. */ |
10813 | internal_relocs | |
4ce794b7 | 10814 | = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL, |
45d6a902 | 10815 | info->keep_memory); |
721956f4 | 10816 | if (internal_relocs == NULL) |
1e2f5b6e | 10817 | goto error_ret_free_local; |
721956f4 AM |
10818 | |
10819 | /* Now examine each relocation. */ | |
10820 | irela = internal_relocs; | |
10821 | irelaend = irela + section->reloc_count; | |
10822 | for (; irela < irelaend; irela++) | |
10823 | { | |
4ce794b7 AM |
10824 | enum elf_ppc64_reloc_type r_type; |
10825 | unsigned int r_indx; | |
721956f4 AM |
10826 | enum ppc_stub_type stub_type; |
10827 | struct ppc_stub_hash_entry *stub_entry; | |
8387904d | 10828 | asection *sym_sec, *code_sec; |
e054468f | 10829 | bfd_vma sym_value, code_value; |
721956f4 | 10830 | bfd_vma destination; |
8843416a | 10831 | bfd_boolean ok_dest; |
721956f4 | 10832 | struct ppc_link_hash_entry *hash; |
8387904d | 10833 | struct ppc_link_hash_entry *fdh; |
411e1bfb AM |
10834 | struct elf_link_hash_entry *h; |
10835 | Elf_Internal_Sym *sym; | |
721956f4 AM |
10836 | char *stub_name; |
10837 | const asection *id_sec; | |
74f0fb50 | 10838 | struct _opd_sec_data *opd; |
e054468f | 10839 | struct plt_entry *plt_ent; |
721956f4 AM |
10840 | |
10841 | r_type = ELF64_R_TYPE (irela->r_info); | |
10842 | r_indx = ELF64_R_SYM (irela->r_info); | |
10843 | ||
4ce794b7 | 10844 | if (r_type >= R_PPC64_max) |
721956f4 AM |
10845 | { |
10846 | bfd_set_error (bfd_error_bad_value); | |
6cdc0ccc | 10847 | goto error_ret_free_internal; |
721956f4 AM |
10848 | } |
10849 | ||
10850 | /* Only look for stubs on branch instructions. */ | |
4ce794b7 AM |
10851 | if (r_type != R_PPC64_REL24 |
10852 | && r_type != R_PPC64_REL14 | |
10853 | && r_type != R_PPC64_REL14_BRTAKEN | |
10854 | && r_type != R_PPC64_REL14_BRNTAKEN) | |
721956f4 AM |
10855 | continue; |
10856 | ||
10857 | /* Now determine the call target, its name, value, | |
10858 | section. */ | |
411e1bfb AM |
10859 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, |
10860 | r_indx, input_bfd)) | |
10861 | goto error_ret_free_internal; | |
10862 | hash = (struct ppc_link_hash_entry *) h; | |
10863 | ||
8843416a | 10864 | ok_dest = FALSE; |
8387904d | 10865 | fdh = NULL; |
7fe2b9a6 | 10866 | sym_value = 0; |
411e1bfb | 10867 | if (hash == NULL) |
721956f4 | 10868 | { |
411e1bfb | 10869 | sym_value = sym->st_value; |
8843416a | 10870 | ok_dest = TRUE; |
721956f4 | 10871 | } |
7fe2b9a6 AM |
10872 | else if (hash->elf.root.type == bfd_link_hash_defined |
10873 | || hash->elf.root.type == bfd_link_hash_defweak) | |
10874 | { | |
10875 | sym_value = hash->elf.root.u.def.value; | |
10876 | if (sym_sec->output_section != NULL) | |
10877 | ok_dest = TRUE; | |
10878 | } | |
10879 | else if (hash->elf.root.type == bfd_link_hash_undefweak | |
10880 | || hash->elf.root.type == bfd_link_hash_undefined) | |
721956f4 | 10881 | { |
99877b66 | 10882 | /* Recognise an old ABI func code entry sym, and |
7fe2b9a6 AM |
10883 | use the func descriptor sym instead if it is |
10884 | defined. */ | |
ceb1f1ef | 10885 | if (hash->elf.root.root.string[0] == '.' |
b31867b6 | 10886 | && (fdh = lookup_fdh (hash, htab)) != NULL) |
8387904d | 10887 | { |
8387904d AM |
10888 | if (fdh->elf.root.type == bfd_link_hash_defined |
10889 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
10890 | { | |
10891 | sym_sec = fdh->elf.root.u.def.section; | |
10892 | sym_value = fdh->elf.root.u.def.value; | |
10893 | if (sym_sec->output_section != NULL) | |
10894 | ok_dest = TRUE; | |
10895 | } | |
99877b66 AM |
10896 | else |
10897 | fdh = NULL; | |
8387904d | 10898 | } |
7fe2b9a6 AM |
10899 | } |
10900 | else | |
10901 | { | |
10902 | bfd_set_error (bfd_error_bad_value); | |
10903 | goto error_ret_free_internal; | |
721956f4 AM |
10904 | } |
10905 | ||
8843416a AM |
10906 | destination = 0; |
10907 | if (ok_dest) | |
10908 | { | |
10909 | sym_value += irela->r_addend; | |
10910 | destination = (sym_value | |
10911 | + sym_sec->output_offset | |
10912 | + sym_sec->output_section->vma); | |
10913 | } | |
10914 | ||
8387904d | 10915 | code_sec = sym_sec; |
e054468f | 10916 | code_value = sym_value; |
74f0fb50 AM |
10917 | opd = get_opd_info (sym_sec); |
10918 | if (opd != NULL) | |
8387904d AM |
10919 | { |
10920 | bfd_vma dest; | |
10921 | ||
74f0fb50 | 10922 | if (hash == NULL && opd->adjust != NULL) |
8387904d | 10923 | { |
74f0fb50 | 10924 | long adjust = opd->adjust[sym_value / 8]; |
8387904d AM |
10925 | if (adjust == -1) |
10926 | continue; | |
e054468f | 10927 | code_value += adjust; |
8387904d AM |
10928 | sym_value += adjust; |
10929 | } | |
10930 | dest = opd_entry_value (sym_sec, sym_value, | |
e054468f | 10931 | &code_sec, &code_value); |
8387904d AM |
10932 | if (dest != (bfd_vma) -1) |
10933 | { | |
10934 | destination = dest; | |
10935 | if (fdh != NULL) | |
10936 | { | |
10937 | /* Fixup old ABI sym to point at code | |
10938 | entry. */ | |
99877b66 | 10939 | hash->elf.root.type = bfd_link_hash_defweak; |
8387904d | 10940 | hash->elf.root.u.def.section = code_sec; |
e054468f | 10941 | hash->elf.root.u.def.value = code_value; |
8387904d AM |
10942 | } |
10943 | } | |
10944 | } | |
10945 | ||
721956f4 | 10946 | /* Determine what (if any) linker stub is needed. */ |
e054468f | 10947 | plt_ent = NULL; |
721956f4 | 10948 | stub_type = ppc_type_of_stub (section, irela, &hash, |
e054468f | 10949 | &plt_ent, destination); |
ad8e1ba5 AM |
10950 | |
10951 | if (stub_type != ppc_stub_plt_call) | |
10952 | { | |
10953 | /* Check whether we need a TOC adjusting stub. | |
10954 | Since the linker pastes together pieces from | |
10955 | different object files when creating the | |
10956 | _init and _fini functions, it may be that a | |
10957 | call to what looks like a local sym is in | |
10958 | fact a call needing a TOC adjustment. */ | |
8387904d AM |
10959 | if (code_sec != NULL |
10960 | && code_sec->output_section != NULL | |
10961 | && (htab->stub_group[code_sec->id].toc_off | |
9b5ecbd0 | 10962 | != htab->stub_group[section->id].toc_off) |
4c52953f AM |
10963 | && (code_sec->has_toc_reloc |
10964 | || code_sec->makes_toc_func_call)) | |
ad8e1ba5 AM |
10965 | stub_type = ppc_stub_long_branch_r2off; |
10966 | } | |
10967 | ||
721956f4 AM |
10968 | if (stub_type == ppc_stub_none) |
10969 | continue; | |
10970 | ||
411e1bfb AM |
10971 | /* __tls_get_addr calls might be eliminated. */ |
10972 | if (stub_type != ppc_stub_plt_call | |
10973 | && hash != NULL | |
8387904d AM |
10974 | && (hash == htab->tls_get_addr |
10975 | || hash == htab->tls_get_addr_fd) | |
411e1bfb AM |
10976 | && section->has_tls_reloc |
10977 | && irela != internal_relocs) | |
10978 | { | |
10979 | /* Get tls info. */ | |
f961d9dd | 10980 | unsigned char *tls_mask; |
411e1bfb | 10981 | |
3a71aa26 | 10982 | if (!get_tls_mask (&tls_mask, NULL, NULL, &local_syms, |
411e1bfb AM |
10983 | irela - 1, input_bfd)) |
10984 | goto error_ret_free_internal; | |
e7b938ca | 10985 | if (*tls_mask != 0) |
411e1bfb AM |
10986 | continue; |
10987 | } | |
10988 | ||
721956f4 AM |
10989 | /* Support for grouping stub sections. */ |
10990 | id_sec = htab->stub_group[section->id].link_sec; | |
10991 | ||
10992 | /* Get the name of this stub. */ | |
10993 | stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela); | |
10994 | if (!stub_name) | |
10995 | goto error_ret_free_internal; | |
10996 | ||
10997 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, | |
b34976b6 | 10998 | stub_name, FALSE, FALSE); |
721956f4 AM |
10999 | if (stub_entry != NULL) |
11000 | { | |
11001 | /* The proper stub has already been created. */ | |
11002 | free (stub_name); | |
11003 | continue; | |
11004 | } | |
11005 | ||
11006 | stub_entry = ppc_add_stub (stub_name, section, htab); | |
11007 | if (stub_entry == NULL) | |
11008 | { | |
11009 | free (stub_name); | |
6cdc0ccc AM |
11010 | error_ret_free_internal: |
11011 | if (elf_section_data (section)->relocs == NULL) | |
11012 | free (internal_relocs); | |
11013 | error_ret_free_local: | |
11014 | if (local_syms != NULL | |
11015 | && (symtab_hdr->contents | |
11016 | != (unsigned char *) local_syms)) | |
11017 | free (local_syms); | |
b34976b6 | 11018 | return FALSE; |
721956f4 AM |
11019 | } |
11020 | ||
ad8e1ba5 | 11021 | stub_entry->stub_type = stub_type; |
e054468f AM |
11022 | if (stub_type != ppc_stub_plt_call) |
11023 | { | |
11024 | stub_entry->target_value = code_value; | |
11025 | stub_entry->target_section = code_sec; | |
11026 | } | |
11027 | else | |
11028 | { | |
11029 | stub_entry->target_value = sym_value; | |
11030 | stub_entry->target_section = sym_sec; | |
11031 | } | |
721956f4 | 11032 | stub_entry->h = hash; |
e054468f | 11033 | stub_entry->plt_ent = plt_ent; |
411e1bfb | 11034 | stub_entry->addend = irela->r_addend; |
ee75fd95 AM |
11035 | |
11036 | if (stub_entry->h != NULL) | |
11037 | htab->stub_globals += 1; | |
721956f4 AM |
11038 | } |
11039 | ||
11040 | /* We're done with the internal relocs, free them. */ | |
6cdc0ccc | 11041 | if (elf_section_data (section)->relocs != internal_relocs) |
1e2f5b6e | 11042 | free (internal_relocs); |
721956f4 | 11043 | } |
6cdc0ccc AM |
11044 | |
11045 | if (local_syms != NULL | |
11046 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
11047 | { | |
11048 | if (!info->keep_memory) | |
11049 | free (local_syms); | |
11050 | else | |
11051 | symtab_hdr->contents = (unsigned char *) local_syms; | |
11052 | } | |
721956f4 AM |
11053 | } |
11054 | ||
5c3dead3 | 11055 | /* We may have added some stubs. Find out the new size of the |
721956f4 AM |
11056 | stub sections. */ |
11057 | for (stub_sec = htab->stub_bfd->sections; | |
11058 | stub_sec != NULL; | |
11059 | stub_sec = stub_sec->next) | |
e717da7e | 11060 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) |
ee75fd95 | 11061 | { |
5c3dead3 | 11062 | stub_sec->rawsize = stub_sec->size; |
ee75fd95 AM |
11063 | stub_sec->size = 0; |
11064 | stub_sec->reloc_count = 0; | |
84f5d08e | 11065 | stub_sec->flags &= ~SEC_RELOC; |
ee75fd95 | 11066 | } |
eea6121a AM |
11067 | |
11068 | htab->brlt->size = 0; | |
84f5d08e AM |
11069 | htab->brlt->reloc_count = 0; |
11070 | htab->brlt->flags &= ~SEC_RELOC; | |
ee75fd95 | 11071 | if (htab->relbrlt != NULL) |
eea6121a | 11072 | htab->relbrlt->size = 0; |
721956f4 | 11073 | |
63bc6f6c | 11074 | bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, info); |
721956f4 | 11075 | |
176a0d42 AM |
11076 | if (info->emitrelocations |
11077 | && htab->glink != NULL && htab->glink->size != 0) | |
11078 | { | |
11079 | htab->glink->reloc_count = 1; | |
11080 | htab->glink->flags |= SEC_RELOC; | |
11081 | } | |
11082 | ||
5c3dead3 AM |
11083 | for (stub_sec = htab->stub_bfd->sections; |
11084 | stub_sec != NULL; | |
11085 | stub_sec = stub_sec->next) | |
11086 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0 | |
11087 | && stub_sec->rawsize != stub_sec->size) | |
11088 | break; | |
11089 | ||
11090 | /* Exit from this loop when no stubs have been added, and no stubs | |
11091 | have changed size. */ | |
11092 | if (stub_sec == NULL) | |
11093 | break; | |
11094 | ||
721956f4 AM |
11095 | /* Ask the linker to do its stuff. */ |
11096 | (*htab->layout_sections_again) (); | |
11097 | } | |
11098 | ||
c456f082 | 11099 | /* It would be nice to strip htab->brlt from the output if the |
afbe61cf AM |
11100 | section is empty, but it's too late. If we strip sections here, |
11101 | the dynamic symbol table is corrupted since the section symbol | |
11102 | for the stripped section isn't written. */ | |
721956f4 | 11103 | |
b34976b6 | 11104 | return TRUE; |
721956f4 AM |
11105 | } |
11106 | ||
11107 | /* Called after we have determined section placement. If sections | |
805fc799 | 11108 | move, we'll be called again. Provide a value for TOCstart. */ |
721956f4 | 11109 | |
805fc799 | 11110 | bfd_vma |
4ce794b7 | 11111 | ppc64_elf_toc (bfd *obfd) |
721956f4 | 11112 | { |
805fc799 AM |
11113 | asection *s; |
11114 | bfd_vma TOCstart; | |
721956f4 | 11115 | |
805fc799 AM |
11116 | /* The TOC consists of sections .got, .toc, .tocbss, .plt in that |
11117 | order. The TOC starts where the first of these sections starts. */ | |
11118 | s = bfd_get_section_by_name (obfd, ".got"); | |
e054468f | 11119 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
805fc799 | 11120 | s = bfd_get_section_by_name (obfd, ".toc"); |
e054468f | 11121 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
805fc799 | 11122 | s = bfd_get_section_by_name (obfd, ".tocbss"); |
e054468f | 11123 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
805fc799 | 11124 | s = bfd_get_section_by_name (obfd, ".plt"); |
e054468f | 11125 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
805fc799 AM |
11126 | { |
11127 | /* This may happen for | |
11128 | o references to TOC base (SYM@toc / TOC[tc0]) without a | |
11129 | .toc directive | |
11130 | o bad linker script | |
11131 | o --gc-sections and empty TOC sections | |
11132 | ||
11133 | FIXME: Warn user? */ | |
11134 | ||
11135 | /* Look for a likely section. We probably won't even be | |
11136 | using TOCstart. */ | |
11137 | for (s = obfd->sections; s != NULL; s = s->next) | |
e054468f AM |
11138 | if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY |
11139 | | SEC_EXCLUDE)) | |
805fc799 AM |
11140 | == (SEC_ALLOC | SEC_SMALL_DATA)) |
11141 | break; | |
721956f4 | 11142 | if (s == NULL) |
805fc799 | 11143 | for (s = obfd->sections; s != NULL; s = s->next) |
e054468f | 11144 | if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_EXCLUDE)) |
805fc799 AM |
11145 | == (SEC_ALLOC | SEC_SMALL_DATA)) |
11146 | break; | |
721956f4 | 11147 | if (s == NULL) |
805fc799 | 11148 | for (s = obfd->sections; s != NULL; s = s->next) |
e054468f AM |
11149 | if ((s->flags & (SEC_ALLOC | SEC_READONLY | SEC_EXCLUDE)) |
11150 | == SEC_ALLOC) | |
805fc799 | 11151 | break; |
721956f4 | 11152 | if (s == NULL) |
805fc799 | 11153 | for (s = obfd->sections; s != NULL; s = s->next) |
e054468f | 11154 | if ((s->flags & (SEC_ALLOC | SEC_EXCLUDE)) == SEC_ALLOC) |
805fc799 AM |
11155 | break; |
11156 | } | |
721956f4 | 11157 | |
805fc799 AM |
11158 | TOCstart = 0; |
11159 | if (s != NULL) | |
11160 | TOCstart = s->output_section->vma + s->output_offset; | |
721956f4 | 11161 | |
805fc799 | 11162 | return TOCstart; |
721956f4 AM |
11163 | } |
11164 | ||
11165 | /* Build all the stubs associated with the current output file. | |
11166 | The stubs are kept in a hash table attached to the main linker | |
11167 | hash table. This function is called via gldelf64ppc_finish. */ | |
11168 | ||
b34976b6 | 11169 | bfd_boolean |
4ce794b7 AM |
11170 | ppc64_elf_build_stubs (bfd_boolean emit_stub_syms, |
11171 | struct bfd_link_info *info, | |
11172 | char **stats) | |
5d1634d7 AM |
11173 | { |
11174 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
721956f4 | 11175 | asection *stub_sec; |
5d1634d7 | 11176 | bfd_byte *p; |
e717da7e | 11177 | int stub_sec_count = 0; |
5d1634d7 | 11178 | |
4dfe6ac6 NC |
11179 | if (htab == NULL) |
11180 | return FALSE; | |
11181 | ||
ad8e1ba5 | 11182 | htab->emit_stub_syms = emit_stub_syms; |
eea6121a AM |
11183 | |
11184 | /* Allocate memory to hold the linker stubs. */ | |
721956f4 AM |
11185 | for (stub_sec = htab->stub_bfd->sections; |
11186 | stub_sec != NULL; | |
11187 | stub_sec = stub_sec->next) | |
eea6121a AM |
11188 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0 |
11189 | && stub_sec->size != 0) | |
e717da7e | 11190 | { |
eea6121a AM |
11191 | stub_sec->contents = bfd_zalloc (htab->stub_bfd, stub_sec->size); |
11192 | if (stub_sec->contents == NULL) | |
11193 | return FALSE; | |
11194 | /* We want to check that built size is the same as calculated | |
11195 | size. rawsize is a convenient location to use. */ | |
11196 | stub_sec->rawsize = stub_sec->size; | |
11197 | stub_sec->size = 0; | |
e717da7e | 11198 | } |
5d1634d7 | 11199 | |
23eb7e01 | 11200 | if (htab->glink != NULL && htab->glink->size != 0) |
5d1634d7 | 11201 | { |
9f951329 | 11202 | unsigned int indx; |
ad8e1ba5 | 11203 | bfd_vma plt0; |
9f951329 | 11204 | |
721956f4 | 11205 | /* Build the .glink plt call stub. */ |
97b639ba AM |
11206 | if (htab->emit_stub_syms) |
11207 | { | |
11208 | struct elf_link_hash_entry *h; | |
468392fb AM |
11209 | h = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve", |
11210 | TRUE, FALSE, FALSE); | |
97b639ba AM |
11211 | if (h == NULL) |
11212 | return FALSE; | |
11213 | if (h->root.type == bfd_link_hash_new) | |
11214 | { | |
11215 | h->root.type = bfd_link_hash_defined; | |
11216 | h->root.u.def.section = htab->glink; | |
ee4bf8d2 | 11217 | h->root.u.def.value = 8; |
f5385ebf AM |
11218 | h->ref_regular = 1; |
11219 | h->def_regular = 1; | |
11220 | h->ref_regular_nonweak = 1; | |
11221 | h->forced_local = 1; | |
11222 | h->non_elf = 0; | |
97b639ba AM |
11223 | } |
11224 | } | |
176a0d42 AM |
11225 | plt0 = htab->plt->output_section->vma + htab->plt->output_offset - 16; |
11226 | if (info->emitrelocations) | |
11227 | { | |
11228 | Elf_Internal_Rela *r = get_relocs (htab->glink, 1); | |
11229 | if (r == NULL) | |
11230 | return FALSE; | |
11231 | r->r_offset = (htab->glink->output_offset | |
11232 | + htab->glink->output_section->vma); | |
11233 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL64); | |
11234 | r->r_addend = plt0; | |
11235 | } | |
4ce794b7 | 11236 | p = htab->glink->contents; |
176a0d42 | 11237 | plt0 -= htab->glink->output_section->vma + htab->glink->output_offset; |
ee4bf8d2 AM |
11238 | bfd_put_64 (htab->glink->owner, plt0, p); |
11239 | p += 8; | |
11240 | bfd_put_32 (htab->glink->owner, MFLR_R12, p); | |
ad8e1ba5 | 11241 | p += 4; |
ee4bf8d2 | 11242 | bfd_put_32 (htab->glink->owner, BCL_20_31, p); |
ad8e1ba5 | 11243 | p += 4; |
ee4bf8d2 | 11244 | bfd_put_32 (htab->glink->owner, MFLR_R11, p); |
ad8e1ba5 | 11245 | p += 4; |
ee4bf8d2 | 11246 | bfd_put_32 (htab->glink->owner, LD_R2_M16R11, p); |
ad8e1ba5 | 11247 | p += 4; |
ee4bf8d2 | 11248 | bfd_put_32 (htab->glink->owner, MTLR_R12, p); |
ad8e1ba5 | 11249 | p += 4; |
ee4bf8d2 | 11250 | bfd_put_32 (htab->glink->owner, ADD_R12_R2_R11, p); |
ad8e1ba5 | 11251 | p += 4; |
ee4bf8d2 | 11252 | bfd_put_32 (htab->glink->owner, LD_R11_0R12, p); |
ad8e1ba5 | 11253 | p += 4; |
4ce794b7 | 11254 | bfd_put_32 (htab->glink->owner, LD_R2_0R12 | 8, p); |
ad8e1ba5 | 11255 | p += 4; |
4ce794b7 | 11256 | bfd_put_32 (htab->glink->owner, MTCTR_R11, p); |
ad8e1ba5 | 11257 | p += 4; |
4ce794b7 | 11258 | bfd_put_32 (htab->glink->owner, LD_R11_0R12 | 16, p); |
ad8e1ba5 | 11259 | p += 4; |
4ce794b7 | 11260 | bfd_put_32 (htab->glink->owner, BCTR, p); |
ad8e1ba5 | 11261 | p += 4; |
ee4bf8d2 AM |
11262 | while (p - htab->glink->contents < GLINK_CALL_STUB_SIZE) |
11263 | { | |
11264 | bfd_put_32 (htab->glink->owner, NOP, p); | |
11265 | p += 4; | |
11266 | } | |
ad8e1ba5 | 11267 | |
9f951329 AM |
11268 | /* Build the .glink lazy link call stubs. */ |
11269 | indx = 0; | |
eea6121a | 11270 | while (p < htab->glink->contents + htab->glink->size) |
9f951329 AM |
11271 | { |
11272 | if (indx < 0x8000) | |
11273 | { | |
4ce794b7 | 11274 | bfd_put_32 (htab->glink->owner, LI_R0_0 | indx, p); |
9f951329 AM |
11275 | p += 4; |
11276 | } | |
11277 | else | |
11278 | { | |
4ce794b7 | 11279 | bfd_put_32 (htab->glink->owner, LIS_R0_0 | PPC_HI (indx), p); |
9f951329 | 11280 | p += 4; |
4ce794b7 | 11281 | bfd_put_32 (htab->glink->owner, ORI_R0_R0_0 | PPC_LO (indx), p); |
9f951329 AM |
11282 | p += 4; |
11283 | } | |
4ce794b7 | 11284 | bfd_put_32 (htab->glink->owner, |
ee4bf8d2 | 11285 | B_DOT | ((htab->glink->contents - p + 8) & 0x3fffffc), p); |
a16d5acb | 11286 | indx++; |
9f951329 AM |
11287 | p += 4; |
11288 | } | |
eea6121a | 11289 | htab->glink->rawsize = p - htab->glink->contents; |
5d1634d7 | 11290 | } |
5d1634d7 | 11291 | |
eea6121a | 11292 | if (htab->brlt->size != 0) |
721956f4 | 11293 | { |
4ce794b7 | 11294 | htab->brlt->contents = bfd_zalloc (htab->brlt->owner, |
eea6121a | 11295 | htab->brlt->size); |
4ce794b7 | 11296 | if (htab->brlt->contents == NULL) |
b34976b6 | 11297 | return FALSE; |
721956f4 | 11298 | } |
ee75fd95 | 11299 | if (htab->relbrlt != NULL && htab->relbrlt->size != 0) |
63bc6f6c AM |
11300 | { |
11301 | htab->relbrlt->contents = bfd_zalloc (htab->relbrlt->owner, | |
eea6121a | 11302 | htab->relbrlt->size); |
63bc6f6c AM |
11303 | if (htab->relbrlt->contents == NULL) |
11304 | return FALSE; | |
11305 | } | |
5d1634d7 | 11306 | |
721956f4 AM |
11307 | /* Build the stubs as directed by the stub hash table. */ |
11308 | bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info); | |
5d1634d7 | 11309 | |
aa8a7074 AM |
11310 | if (htab->relbrlt != NULL) |
11311 | htab->relbrlt->reloc_count = 0; | |
11312 | ||
721956f4 AM |
11313 | for (stub_sec = htab->stub_bfd->sections; |
11314 | stub_sec != NULL; | |
11315 | stub_sec = stub_sec->next) | |
e717da7e AM |
11316 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) |
11317 | { | |
11318 | stub_sec_count += 1; | |
eea6121a | 11319 | if (stub_sec->rawsize != stub_sec->size) |
e717da7e AM |
11320 | break; |
11321 | } | |
5d1634d7 | 11322 | |
721956f4 | 11323 | if (stub_sec != NULL |
eea6121a | 11324 | || htab->glink->rawsize != htab->glink->size) |
5d1634d7 | 11325 | { |
b34976b6 | 11326 | htab->stub_error = TRUE; |
721956f4 | 11327 | (*_bfd_error_handler) (_("stubs don't match calculated size")); |
5d1634d7 | 11328 | } |
721956f4 | 11329 | |
d2a300cf AM |
11330 | if (htab->stub_error) |
11331 | return FALSE; | |
11332 | ||
11333 | if (stats != NULL) | |
11334 | { | |
11335 | *stats = bfd_malloc (500); | |
11336 | if (*stats == NULL) | |
11337 | return FALSE; | |
11338 | ||
ee75fd95 | 11339 | sprintf (*stats, _("linker stubs in %u group%s\n" |
d2a300cf AM |
11340 | " branch %lu\n" |
11341 | " toc adjust %lu\n" | |
11342 | " long branch %lu\n" | |
11343 | " long toc adj %lu\n" | |
11344 | " plt call %lu"), | |
e717da7e | 11345 | stub_sec_count, |
ee75fd95 | 11346 | stub_sec_count == 1 ? "" : "s", |
4ce794b7 AM |
11347 | htab->stub_count[ppc_stub_long_branch - 1], |
11348 | htab->stub_count[ppc_stub_long_branch_r2off - 1], | |
11349 | htab->stub_count[ppc_stub_plt_branch - 1], | |
11350 | htab->stub_count[ppc_stub_plt_branch_r2off - 1], | |
11351 | htab->stub_count[ppc_stub_plt_call - 1]); | |
d2a300cf AM |
11352 | } |
11353 | return TRUE; | |
5bd4f169 AM |
11354 | } |
11355 | ||
99877b66 AM |
11356 | /* This function undoes the changes made by add_symbol_adjust. */ |
11357 | ||
11358 | static bfd_boolean | |
11359 | undo_symbol_twiddle (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED) | |
11360 | { | |
11361 | struct ppc_link_hash_entry *eh; | |
11362 | ||
11363 | if (h->root.type == bfd_link_hash_indirect) | |
11364 | return TRUE; | |
11365 | ||
11366 | if (h->root.type == bfd_link_hash_warning) | |
11367 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
11368 | ||
11369 | eh = (struct ppc_link_hash_entry *) h; | |
11370 | if (eh->elf.root.type != bfd_link_hash_undefweak || !eh->was_undefined) | |
11371 | return TRUE; | |
11372 | ||
11373 | eh->elf.root.type = bfd_link_hash_undefined; | |
11374 | return TRUE; | |
11375 | } | |
11376 | ||
11377 | void | |
11378 | ppc64_elf_restore_symbols (struct bfd_link_info *info) | |
11379 | { | |
11380 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
11381 | |
11382 | if (htab != NULL) | |
11383 | elf_link_hash_traverse (&htab->elf, undo_symbol_twiddle, info); | |
99877b66 AM |
11384 | } |
11385 | ||
60124e18 AM |
11386 | /* What to do when ld finds relocations against symbols defined in |
11387 | discarded sections. */ | |
11388 | ||
11389 | static unsigned int | |
11390 | ppc64_elf_action_discarded (asection *sec) | |
11391 | { | |
11392 | if (strcmp (".opd", sec->name) == 0) | |
11393 | return 0; | |
11394 | ||
11395 | if (strcmp (".toc", sec->name) == 0) | |
11396 | return 0; | |
11397 | ||
bce50a28 JJ |
11398 | if (strcmp (".toc1", sec->name) == 0) |
11399 | return 0; | |
11400 | ||
60124e18 AM |
11401 | return _bfd_elf_default_action_discarded (sec); |
11402 | } | |
11403 | ||
ba761f19 | 11404 | /* REL points to a low-part reloc on a largetoc instruction sequence. |
67f0cbdb | 11405 | Find the matching high-part reloc instruction and verify that it |
d983b7a0 AM |
11406 | is addis REG,x,imm. If so, set *REG to x and return a pointer to |
11407 | the high-part reloc. */ | |
67f0cbdb AM |
11408 | |
11409 | static const Elf_Internal_Rela * | |
11410 | ha_reloc_match (const Elf_Internal_Rela *relocs, | |
11411 | const Elf_Internal_Rela *rel, | |
d983b7a0 AM |
11412 | unsigned int *reg, |
11413 | bfd_boolean match_addend, | |
67f0cbdb AM |
11414 | const bfd *input_bfd, |
11415 | const bfd_byte *contents) | |
11416 | { | |
11417 | enum elf_ppc64_reloc_type r_type, r_type_ha; | |
11418 | bfd_vma r_info_ha, r_addend; | |
11419 | ||
11420 | r_type = ELF64_R_TYPE (rel->r_info); | |
11421 | switch (r_type) | |
11422 | { | |
11423 | case R_PPC64_GOT_TLSLD16_LO: | |
11424 | case R_PPC64_GOT_TLSGD16_LO: | |
11425 | case R_PPC64_GOT_TPREL16_LO_DS: | |
11426 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
11427 | case R_PPC64_GOT16_LO: | |
11428 | case R_PPC64_TOC16_LO: | |
11429 | r_type_ha = r_type + 2; | |
11430 | break; | |
11431 | case R_PPC64_GOT16_LO_DS: | |
11432 | r_type_ha = R_PPC64_GOT16_HA; | |
11433 | break; | |
11434 | case R_PPC64_TOC16_LO_DS: | |
11435 | r_type_ha = R_PPC64_TOC16_HA; | |
11436 | break; | |
11437 | default: | |
11438 | abort (); | |
11439 | } | |
11440 | r_info_ha = ELF64_R_INFO (ELF64_R_SYM (rel->r_info), r_type_ha); | |
11441 | r_addend = rel->r_addend; | |
11442 | ||
11443 | while (--rel >= relocs) | |
11444 | if (rel->r_info == r_info_ha | |
d983b7a0 AM |
11445 | && (!match_addend |
11446 | || rel->r_addend == r_addend)) | |
67f0cbdb AM |
11447 | { |
11448 | const bfd_byte *p = contents + (rel->r_offset & ~3); | |
11449 | unsigned int insn = bfd_get_32 (input_bfd, p); | |
d983b7a0 AM |
11450 | if ((insn & (0x3f << 26)) == (15u << 26) /* addis rt,x,imm */ |
11451 | && (insn & (0x1f << 21)) == (*reg << 21)) | |
11452 | { | |
11453 | *reg = (insn >> 16) & 0x1f; | |
11454 | return rel; | |
11455 | } | |
67f0cbdb AM |
11456 | break; |
11457 | } | |
11458 | return NULL; | |
11459 | } | |
11460 | ||
5bd4f169 AM |
11461 | /* The RELOCATE_SECTION function is called by the ELF backend linker |
11462 | to handle the relocations for a section. | |
11463 | ||
11464 | The relocs are always passed as Rela structures; if the section | |
11465 | actually uses Rel structures, the r_addend field will always be | |
11466 | zero. | |
11467 | ||
11468 | This function is responsible for adjust the section contents as | |
11469 | necessary, and (if using Rela relocs and generating a | |
1049f94e | 11470 | relocatable output file) adjusting the reloc addend as |
5bd4f169 AM |
11471 | necessary. |
11472 | ||
11473 | This function does not have to worry about setting the reloc | |
11474 | address or the reloc symbol index. | |
11475 | ||
11476 | LOCAL_SYMS is a pointer to the swapped in local symbols. | |
11477 | ||
11478 | LOCAL_SECTIONS is an array giving the section in the input file | |
11479 | corresponding to the st_shndx field of each local symbol. | |
11480 | ||
11481 | The global hash table entry for the global symbols can be found | |
11482 | via elf_sym_hashes (input_bfd). | |
11483 | ||
1049f94e | 11484 | When generating relocatable output, this function must handle |
5bd4f169 AM |
11485 | STB_LOCAL/STT_SECTION symbols specially. The output symbol is |
11486 | going to be the section symbol corresponding to the output | |
11487 | section, which means that the addend must be adjusted | |
11488 | accordingly. */ | |
11489 | ||
b34976b6 | 11490 | static bfd_boolean |
4ce794b7 AM |
11491 | ppc64_elf_relocate_section (bfd *output_bfd, |
11492 | struct bfd_link_info *info, | |
11493 | bfd *input_bfd, | |
11494 | asection *input_section, | |
11495 | bfd_byte *contents, | |
11496 | Elf_Internal_Rela *relocs, | |
11497 | Elf_Internal_Sym *local_syms, | |
11498 | asection **local_sections) | |
5bd4f169 | 11499 | { |
65f38f15 | 11500 | struct ppc_link_hash_table *htab; |
5bd4f169 AM |
11501 | Elf_Internal_Shdr *symtab_hdr; |
11502 | struct elf_link_hash_entry **sym_hashes; | |
5bd4f169 AM |
11503 | Elf_Internal_Rela *rel; |
11504 | Elf_Internal_Rela *relend; | |
411e1bfb AM |
11505 | Elf_Internal_Rela outrel; |
11506 | bfd_byte *loc; | |
411e1bfb | 11507 | struct got_entry **local_got_ents; |
d983b7a0 | 11508 | unsigned char *ha_opt; |
5bd4f169 | 11509 | bfd_vma TOCstart; |
d983b7a0 | 11510 | bfd_boolean no_ha_opt; |
b34976b6 AM |
11511 | bfd_boolean ret = TRUE; |
11512 | bfd_boolean is_opd; | |
96e0dda4 | 11513 | /* Disabled until we sort out how ld should choose 'y' vs 'at'. */ |
b34976b6 | 11514 | bfd_boolean is_power4 = FALSE; |
4fe5ca5b | 11515 | bfd_vma d_offset = (bfd_big_endian (output_bfd) ? 2 : 0); |
5bd4f169 | 11516 | |
65f38f15 | 11517 | /* Initialize howto table if needed. */ |
5bd4f169 | 11518 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) |
5bd4f169 AM |
11519 | ppc_howto_init (); |
11520 | ||
65f38f15 | 11521 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
11522 | if (htab == NULL) |
11523 | return FALSE; | |
ee75fd95 AM |
11524 | |
11525 | /* Don't relocate stub sections. */ | |
11526 | if (input_section->owner == htab->stub_bfd) | |
11527 | return TRUE; | |
11528 | ||
0c8d6e5c | 11529 | BFD_ASSERT (is_ppc64_elf (input_bfd)); |
0ffa91dd | 11530 | |
411e1bfb | 11531 | local_got_ents = elf_local_got_ents (input_bfd); |
5bd4f169 | 11532 | TOCstart = elf_gp (output_bfd); |
0ffa91dd | 11533 | symtab_hdr = &elf_symtab_hdr (input_bfd); |
5bd4f169 | 11534 | sym_hashes = elf_sym_hashes (input_bfd); |
7c8fe5c4 | 11535 | is_opd = ppc64_elf_section_data (input_section)->sec_type == sec_opd; |
d983b7a0 AM |
11536 | ha_opt = NULL; |
11537 | no_ha_opt = FALSE; | |
65f38f15 | 11538 | |
5bd4f169 AM |
11539 | rel = relocs; |
11540 | relend = relocs + input_section->reloc_count; | |
11541 | for (; rel < relend; rel++) | |
11542 | { | |
04c9666a | 11543 | enum elf_ppc64_reloc_type r_type; |
4cc603a5 | 11544 | bfd_vma addend, orig_addend; |
5bd4f169 AM |
11545 | bfd_reloc_status_type r; |
11546 | Elf_Internal_Sym *sym; | |
11547 | asection *sec; | |
039b3fef AM |
11548 | struct elf_link_hash_entry *h_elf; |
11549 | struct ppc_link_hash_entry *h; | |
11550 | struct ppc_link_hash_entry *fdh; | |
5bd4f169 | 11551 | const char *sym_name; |
0d4792f7 | 11552 | unsigned long r_symndx, toc_symndx; |
3a71aa26 | 11553 | bfd_vma toc_addend; |
f961d9dd AM |
11554 | unsigned char tls_mask, tls_gd, tls_type; |
11555 | unsigned char sym_type; | |
5bd4f169 | 11556 | bfd_vma relocation; |
b34976b6 AM |
11557 | bfd_boolean unresolved_reloc; |
11558 | bfd_boolean warned; | |
67f0cbdb AM |
11559 | unsigned int insn; |
11560 | bfd_vma mask; | |
721956f4 AM |
11561 | struct ppc_stub_hash_entry *stub_entry; |
11562 | bfd_vma max_br_offset; | |
11563 | bfd_vma from; | |
5bd4f169 | 11564 | |
4ce794b7 | 11565 | r_type = ELF64_R_TYPE (rel->r_info); |
5bd4f169 | 11566 | r_symndx = ELF64_R_SYM (rel->r_info); |
ee87f2da AM |
11567 | |
11568 | /* For old style R_PPC64_TOC relocs with a zero symbol, use the | |
11569 | symbol of the previous ADDR64 reloc. The symbol gives us the | |
11570 | proper TOC base to use. */ | |
11571 | if (rel->r_info == ELF64_R_INFO (0, R_PPC64_TOC) | |
11572 | && rel != relocs | |
11573 | && ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_ADDR64 | |
11574 | && is_opd) | |
11575 | r_symndx = ELF64_R_SYM (rel[-1].r_info); | |
11576 | ||
4ce794b7 AM |
11577 | sym = NULL; |
11578 | sec = NULL; | |
039b3fef | 11579 | h_elf = NULL; |
4ce794b7 | 11580 | sym_name = NULL; |
b34976b6 AM |
11581 | unresolved_reloc = FALSE; |
11582 | warned = FALSE; | |
4cc603a5 | 11583 | orig_addend = rel->r_addend; |
65f38f15 | 11584 | |
0b13192e | 11585 | if (r_symndx < symtab_hdr->sh_info) |
5bd4f169 AM |
11586 | { |
11587 | /* It's a local symbol. */ | |
74f0fb50 | 11588 | struct _opd_sec_data *opd; |
4025353c | 11589 | |
5bd4f169 AM |
11590 | sym = local_syms + r_symndx; |
11591 | sec = local_sections[r_symndx]; | |
26c61ae5 | 11592 | sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec); |
0d4792f7 | 11593 | sym_type = ELF64_ST_TYPE (sym->st_info); |
8517fae7 | 11594 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); |
74f0fb50 AM |
11595 | opd = get_opd_info (sec); |
11596 | if (opd != NULL && opd->adjust != NULL) | |
1e2f5b6e | 11597 | { |
74f0fb50 | 11598 | long adjust = opd->adjust[(sym->st_value + rel->r_addend) / 8]; |
4025353c AM |
11599 | if (adjust == -1) |
11600 | relocation = 0; | |
11601 | else | |
4cc603a5 AM |
11602 | { |
11603 | /* If this is a relocation against the opd section sym | |
11604 | and we have edited .opd, adjust the reloc addend so | |
11605 | that ld -r and ld --emit-relocs output is correct. | |
11606 | If it is a reloc against some other .opd symbol, | |
11607 | then the symbol value will be adjusted later. */ | |
11608 | if (ELF_ST_TYPE (sym->st_info) == STT_SECTION) | |
11609 | rel->r_addend += adjust; | |
11610 | else | |
11611 | relocation += adjust; | |
11612 | } | |
1e2f5b6e | 11613 | } |
5bd4f169 AM |
11614 | } |
11615 | else | |
11616 | { | |
b2a8e766 AM |
11617 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
11618 | r_symndx, symtab_hdr, sym_hashes, | |
039b3fef | 11619 | h_elf, sec, relocation, |
b2a8e766 | 11620 | unresolved_reloc, warned); |
039b3fef AM |
11621 | sym_name = h_elf->root.root.string; |
11622 | sym_type = h_elf->type; | |
5bd4f169 | 11623 | } |
039b3fef | 11624 | h = (struct ppc_link_hash_entry *) h_elf; |
5bd4f169 | 11625 | |
ab96bf03 | 11626 | if (sec != NULL && elf_discarded_section (sec)) |
e4067dbb DJ |
11627 | RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, |
11628 | rel, relend, | |
11629 | ppc64_elf_howto_table[r_type], | |
11630 | contents); | |
ab96bf03 AM |
11631 | |
11632 | if (info->relocatable) | |
11633 | continue; | |
11634 | ||
951fd09b AM |
11635 | /* TLS optimizations. Replace instruction sequences and relocs |
11636 | based on information we collected in tls_optimize. We edit | |
11637 | RELOCS so that --emit-relocs will output something sensible | |
11638 | for the final instruction stream. */ | |
11639 | tls_mask = 0; | |
11640 | tls_gd = 0; | |
0d4792f7 | 11641 | toc_symndx = 0; |
727fc41e AM |
11642 | if (h != NULL) |
11643 | tls_mask = h->tls_mask; | |
11644 | else if (local_got_ents != NULL) | |
411e1bfb | 11645 | { |
e054468f AM |
11646 | struct plt_entry **local_plt = (struct plt_entry **) |
11647 | (local_got_ents + symtab_hdr->sh_info); | |
f961d9dd | 11648 | unsigned char *lgot_masks = (unsigned char *) |
e054468f | 11649 | (local_plt + symtab_hdr->sh_info); |
727fc41e AM |
11650 | tls_mask = lgot_masks[r_symndx]; |
11651 | } | |
11652 | if (tls_mask == 0 | |
11653 | && (r_type == R_PPC64_TLS | |
11654 | || r_type == R_PPC64_TLSGD | |
11655 | || r_type == R_PPC64_TLSLD)) | |
11656 | { | |
11657 | /* Check for toc tls entries. */ | |
f961d9dd | 11658 | unsigned char *toc_tls; |
0d4792f7 | 11659 | |
727fc41e AM |
11660 | if (!get_tls_mask (&toc_tls, &toc_symndx, &toc_addend, |
11661 | &local_syms, rel, input_bfd)) | |
11662 | return FALSE; | |
0d4792f7 | 11663 | |
727fc41e AM |
11664 | if (toc_tls) |
11665 | tls_mask = *toc_tls; | |
0d4792f7 AM |
11666 | } |
11667 | ||
11668 | /* Check that tls relocs are used with tls syms, and non-tls | |
11669 | relocs are used with non-tls syms. */ | |
cf35638d | 11670 | if (r_symndx != STN_UNDEF |
0d4792f7 AM |
11671 | && r_type != R_PPC64_NONE |
11672 | && (h == NULL | |
039b3fef AM |
11673 | || h->elf.root.type == bfd_link_hash_defined |
11674 | || h->elf.root.type == bfd_link_hash_defweak) | |
1d483afe AM |
11675 | && (IS_PPC64_TLS_RELOC (r_type) |
11676 | != (sym_type == STT_TLS | |
11677 | || (sym_type == STT_SECTION | |
11678 | && (sec->flags & SEC_THREAD_LOCAL) != 0)))) | |
0d4792f7 | 11679 | { |
727fc41e AM |
11680 | if (tls_mask != 0 |
11681 | && (r_type == R_PPC64_TLS | |
11682 | || r_type == R_PPC64_TLSGD | |
11683 | || r_type == R_PPC64_TLSLD)) | |
0d4792f7 AM |
11684 | /* R_PPC64_TLS is OK against a symbol in the TOC. */ |
11685 | ; | |
11686 | else | |
11687 | (*_bfd_error_handler) | |
1d483afe | 11688 | (!IS_PPC64_TLS_RELOC (r_type) |
d003868e AM |
11689 | ? _("%B(%A+0x%lx): %s used with TLS symbol %s") |
11690 | : _("%B(%A+0x%lx): %s used with non-TLS symbol %s"), | |
11691 | input_bfd, | |
11692 | input_section, | |
0d4792f7 AM |
11693 | (long) rel->r_offset, |
11694 | ppc64_elf_howto_table[r_type]->name, | |
11695 | sym_name); | |
411e1bfb AM |
11696 | } |
11697 | ||
11698 | /* Ensure reloc mapping code below stays sane. */ | |
11699 | if (R_PPC64_TOC16_LO_DS != R_PPC64_TOC16_DS + 1 | |
11700 | || R_PPC64_TOC16_LO != R_PPC64_TOC16 + 1 | |
11701 | || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TLSGD16 & 3) | |
11702 | || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TLSGD16_LO & 3) | |
11703 | || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TLSGD16_HI & 3) | |
11704 | || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TLSGD16_HA & 3) | |
11705 | || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TPREL16_DS & 3) | |
11706 | || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TPREL16_LO_DS & 3) | |
11707 | || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TPREL16_HI & 3) | |
11708 | || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TPREL16_HA & 3)) | |
11709 | abort (); | |
0d4792f7 | 11710 | |
411e1bfb AM |
11711 | switch (r_type) |
11712 | { | |
11713 | default: | |
411e1bfb AM |
11714 | break; |
11715 | ||
ba761f19 AM |
11716 | case R_PPC64_LO_DS_OPT: |
11717 | insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset); | |
11718 | if ((insn & (0x3f << 26)) != 58u << 26) | |
11719 | abort (); | |
11720 | insn += (14u << 26) - (58u << 26); | |
11721 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset); | |
11722 | r_type = R_PPC64_TOC16_LO; | |
11723 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
11724 | break; | |
11725 | ||
411e1bfb AM |
11726 | case R_PPC64_TOC16: |
11727 | case R_PPC64_TOC16_LO: | |
11728 | case R_PPC64_TOC16_DS: | |
11729 | case R_PPC64_TOC16_LO_DS: | |
411e1bfb AM |
11730 | { |
11731 | /* Check for toc tls entries. */ | |
f961d9dd | 11732 | unsigned char *toc_tls; |
951fd09b | 11733 | int retval; |
411e1bfb | 11734 | |
3a71aa26 AM |
11735 | retval = get_tls_mask (&toc_tls, &toc_symndx, &toc_addend, |
11736 | &local_syms, rel, input_bfd); | |
951fd09b | 11737 | if (retval == 0) |
411e1bfb AM |
11738 | return FALSE; |
11739 | ||
11740 | if (toc_tls) | |
11741 | { | |
951fd09b | 11742 | tls_mask = *toc_tls; |
411e1bfb AM |
11743 | if (r_type == R_PPC64_TOC16_DS |
11744 | || r_type == R_PPC64_TOC16_LO_DS) | |
81407a69 AM |
11745 | { |
11746 | if (tls_mask != 0 | |
11747 | && (tls_mask & (TLS_DTPREL | TLS_TPREL)) == 0) | |
11748 | goto toctprel; | |
11749 | } | |
411e1bfb | 11750 | else |
951fd09b AM |
11751 | { |
11752 | /* If we found a GD reloc pair, then we might be | |
11753 | doing a GD->IE transition. */ | |
11754 | if (retval == 2) | |
11755 | { | |
11756 | tls_gd = TLS_TPRELGD; | |
11757 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
102890f0 | 11758 | goto tls_ldgd_opt; |
951fd09b AM |
11759 | } |
11760 | else if (retval == 3) | |
11761 | { | |
11762 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) | |
102890f0 | 11763 | goto tls_ldgd_opt; |
951fd09b AM |
11764 | } |
11765 | } | |
411e1bfb AM |
11766 | } |
11767 | } | |
11768 | break; | |
11769 | ||
9d6ded02 AM |
11770 | case R_PPC64_GOT_TPREL16_HI: |
11771 | case R_PPC64_GOT_TPREL16_HA: | |
11772 | if (tls_mask != 0 | |
11773 | && (tls_mask & TLS_TPREL) == 0) | |
11774 | { | |
11775 | rel->r_offset -= d_offset; | |
11776 | bfd_put_32 (output_bfd, NOP, contents + rel->r_offset); | |
11777 | r_type = R_PPC64_NONE; | |
11778 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
11779 | } | |
11780 | break; | |
11781 | ||
411e1bfb AM |
11782 | case R_PPC64_GOT_TPREL16_DS: |
11783 | case R_PPC64_GOT_TPREL16_LO_DS: | |
951fd09b AM |
11784 | if (tls_mask != 0 |
11785 | && (tls_mask & TLS_TPREL) == 0) | |
411e1bfb | 11786 | { |
81407a69 | 11787 | toctprel: |
4fe5ca5b | 11788 | insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset); |
411e1bfb AM |
11789 | insn &= 31 << 21; |
11790 | insn |= 0x3c0d0000; /* addis 0,13,0 */ | |
4fe5ca5b | 11791 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset); |
411e1bfb | 11792 | r_type = R_PPC64_TPREL16_HA; |
0d4792f7 AM |
11793 | if (toc_symndx != 0) |
11794 | { | |
11795 | rel->r_info = ELF64_R_INFO (toc_symndx, r_type); | |
3a71aa26 | 11796 | rel->r_addend = toc_addend; |
0d4792f7 AM |
11797 | /* We changed the symbol. Start over in order to |
11798 | get h, sym, sec etc. right. */ | |
11799 | rel--; | |
11800 | continue; | |
11801 | } | |
11802 | else | |
11803 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
411e1bfb AM |
11804 | } |
11805 | break; | |
11806 | ||
11807 | case R_PPC64_TLS: | |
951fd09b AM |
11808 | if (tls_mask != 0 |
11809 | && (tls_mask & TLS_TPREL) == 0) | |
411e1bfb | 11810 | { |
411e1bfb | 11811 | insn = bfd_get_32 (output_bfd, contents + rel->r_offset); |
2d0f3896 AM |
11812 | insn = _bfd_elf_ppc_at_tls_transform (insn, 13); |
11813 | if (insn == 0) | |
411e1bfb | 11814 | abort (); |
411e1bfb | 11815 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset); |
411e1bfb | 11816 | /* Was PPC64_TLS which sits on insn boundary, now |
4fe5ca5b GM |
11817 | PPC64_TPREL16_LO which is at low-order half-word. */ |
11818 | rel->r_offset += d_offset; | |
0d4792f7 AM |
11819 | r_type = R_PPC64_TPREL16_LO; |
11820 | if (toc_symndx != 0) | |
11821 | { | |
11822 | rel->r_info = ELF64_R_INFO (toc_symndx, r_type); | |
3a71aa26 | 11823 | rel->r_addend = toc_addend; |
0d4792f7 AM |
11824 | /* We changed the symbol. Start over in order to |
11825 | get h, sym, sec etc. right. */ | |
11826 | rel--; | |
11827 | continue; | |
11828 | } | |
11829 | else | |
11830 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
411e1bfb AM |
11831 | } |
11832 | break; | |
11833 | ||
411e1bfb AM |
11834 | case R_PPC64_GOT_TLSGD16_HI: |
11835 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b AM |
11836 | tls_gd = TLS_TPRELGD; |
11837 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
11838 | goto tls_gdld_hi; | |
11839 | break; | |
11840 | ||
411e1bfb AM |
11841 | case R_PPC64_GOT_TLSLD16_HI: |
11842 | case R_PPC64_GOT_TLSLD16_HA: | |
951fd09b | 11843 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) |
411e1bfb | 11844 | { |
951fd09b AM |
11845 | tls_gdld_hi: |
11846 | if ((tls_mask & tls_gd) != 0) | |
11847 | r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3) | |
11848 | + R_PPC64_GOT_TPREL16_DS); | |
11849 | else | |
411e1bfb | 11850 | { |
4fe5ca5b | 11851 | rel->r_offset -= d_offset; |
727ac201 | 11852 | bfd_put_32 (output_bfd, NOP, contents + rel->r_offset); |
951fd09b | 11853 | r_type = R_PPC64_NONE; |
411e1bfb | 11854 | } |
951fd09b | 11855 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); |
411e1bfb AM |
11856 | } |
11857 | break; | |
11858 | ||
951fd09b AM |
11859 | case R_PPC64_GOT_TLSGD16: |
11860 | case R_PPC64_GOT_TLSGD16_LO: | |
11861 | tls_gd = TLS_TPRELGD; | |
11862 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
102890f0 | 11863 | goto tls_ldgd_opt; |
951fd09b | 11864 | break; |
411e1bfb | 11865 | |
951fd09b AM |
11866 | case R_PPC64_GOT_TLSLD16: |
11867 | case R_PPC64_GOT_TLSLD16_LO: | |
11868 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) | |
11869 | { | |
3a71aa26 | 11870 | unsigned int insn1, insn2, insn3; |
102890f0 AM |
11871 | bfd_vma offset; |
11872 | ||
11873 | tls_ldgd_opt: | |
727fc41e AM |
11874 | offset = (bfd_vma) -1; |
11875 | /* If not using the newer R_PPC64_TLSGD/LD to mark | |
11876 | __tls_get_addr calls, we must trust that the call | |
11877 | stays with its arg setup insns, ie. that the next | |
11878 | reloc is the __tls_get_addr call associated with | |
11879 | the current reloc. Edit both insns. */ | |
11880 | if (input_section->has_tls_get_addr_call | |
11881 | && rel + 1 < relend | |
11882 | && branch_reloc_hash_match (input_bfd, rel + 1, | |
11883 | htab->tls_get_addr, | |
11884 | htab->tls_get_addr_fd)) | |
11885 | offset = rel[1].r_offset; | |
102890f0 | 11886 | if ((tls_mask & tls_gd) != 0) |
411e1bfb | 11887 | { |
102890f0 | 11888 | /* IE */ |
3a71aa26 AM |
11889 | insn1 = bfd_get_32 (output_bfd, |
11890 | contents + rel->r_offset - d_offset); | |
102890f0 AM |
11891 | insn1 &= (1 << 26) - (1 << 2); |
11892 | insn1 |= 58 << 26; /* ld */ | |
11893 | insn2 = 0x7c636a14; /* add 3,3,13 */ | |
727fc41e | 11894 | if (offset != (bfd_vma) -1) |
f58d5a2d | 11895 | rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE); |
102890f0 AM |
11896 | if ((tls_mask & TLS_EXPLICIT) == 0) |
11897 | r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3) | |
11898 | + R_PPC64_GOT_TPREL16_DS); | |
411e1bfb | 11899 | else |
102890f0 AM |
11900 | r_type += R_PPC64_TOC16_DS - R_PPC64_TOC16; |
11901 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
11902 | } | |
11903 | else | |
11904 | { | |
11905 | /* LE */ | |
11906 | insn1 = 0x3c6d0000; /* addis 3,13,0 */ | |
11907 | insn2 = 0x38630000; /* addi 3,3,0 */ | |
11908 | if (tls_gd == 0) | |
951fd09b | 11909 | { |
102890f0 | 11910 | /* Was an LD reloc. */ |
1d483afe AM |
11911 | if (toc_symndx) |
11912 | sec = local_sections[toc_symndx]; | |
11913 | for (r_symndx = 0; | |
11914 | r_symndx < symtab_hdr->sh_info; | |
11915 | r_symndx++) | |
11916 | if (local_sections[r_symndx] == sec) | |
11917 | break; | |
11918 | if (r_symndx >= symtab_hdr->sh_info) | |
cf35638d | 11919 | r_symndx = STN_UNDEF; |
102890f0 | 11920 | rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; |
cf35638d | 11921 | if (r_symndx != STN_UNDEF) |
1d483afe AM |
11922 | rel->r_addend -= (local_syms[r_symndx].st_value |
11923 | + sec->output_offset | |
11924 | + sec->output_section->vma); | |
951fd09b | 11925 | } |
102890f0 | 11926 | else if (toc_symndx != 0) |
3a71aa26 AM |
11927 | { |
11928 | r_symndx = toc_symndx; | |
11929 | rel->r_addend = toc_addend; | |
11930 | } | |
102890f0 AM |
11931 | r_type = R_PPC64_TPREL16_HA; |
11932 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
727fc41e AM |
11933 | if (offset != (bfd_vma) -1) |
11934 | { | |
11935 | rel[1].r_info = ELF64_R_INFO (r_symndx, | |
11936 | R_PPC64_TPREL16_LO); | |
11937 | rel[1].r_offset = offset + d_offset; | |
11938 | rel[1].r_addend = rel->r_addend; | |
11939 | } | |
102890f0 | 11940 | } |
3a71aa26 AM |
11941 | bfd_put_32 (output_bfd, insn1, |
11942 | contents + rel->r_offset - d_offset); | |
727fc41e AM |
11943 | if (offset != (bfd_vma) -1) |
11944 | { | |
11945 | insn3 = bfd_get_32 (output_bfd, | |
11946 | contents + offset + 4); | |
11947 | if (insn3 == NOP | |
11948 | || insn3 == CROR_151515 || insn3 == CROR_313131) | |
11949 | { | |
11950 | rel[1].r_offset += 4; | |
11951 | bfd_put_32 (output_bfd, insn2, contents + offset + 4); | |
11952 | insn2 = NOP; | |
11953 | } | |
11954 | bfd_put_32 (output_bfd, insn2, contents + offset); | |
11955 | } | |
11956 | if ((tls_mask & tls_gd) == 0 | |
11957 | && (tls_gd == 0 || toc_symndx != 0)) | |
11958 | { | |
11959 | /* We changed the symbol. Start over in order | |
11960 | to get h, sym, sec etc. right. */ | |
11961 | rel--; | |
11962 | continue; | |
11963 | } | |
11964 | } | |
11965 | break; | |
11966 | ||
11967 | case R_PPC64_TLSGD: | |
11968 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
11969 | { | |
11970 | unsigned int insn2, insn3; | |
11971 | bfd_vma offset = rel->r_offset; | |
11972 | ||
11973 | if ((tls_mask & TLS_TPRELGD) != 0) | |
11974 | { | |
11975 | /* IE */ | |
11976 | r_type = R_PPC64_NONE; | |
11977 | insn2 = 0x7c636a14; /* add 3,3,13 */ | |
11978 | } | |
11979 | else | |
11980 | { | |
11981 | /* LE */ | |
11982 | if (toc_symndx != 0) | |
11983 | { | |
11984 | r_symndx = toc_symndx; | |
11985 | rel->r_addend = toc_addend; | |
11986 | } | |
11987 | r_type = R_PPC64_TPREL16_LO; | |
11988 | rel->r_offset = offset + d_offset; | |
11989 | insn2 = 0x38630000; /* addi 3,3,0 */ | |
11990 | } | |
11991 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
11992 | /* Zap the reloc on the _tls_get_addr call too. */ | |
11993 | BFD_ASSERT (offset == rel[1].r_offset); | |
f58d5a2d | 11994 | rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE); |
3a71aa26 AM |
11995 | insn3 = bfd_get_32 (output_bfd, |
11996 | contents + offset + 4); | |
102890f0 AM |
11997 | if (insn3 == NOP |
11998 | || insn3 == CROR_151515 || insn3 == CROR_313131) | |
11999 | { | |
727fc41e | 12000 | rel->r_offset += 4; |
3a71aa26 AM |
12001 | bfd_put_32 (output_bfd, insn2, contents + offset + 4); |
12002 | insn2 = NOP; | |
102890f0 | 12003 | } |
102890f0 | 12004 | bfd_put_32 (output_bfd, insn2, contents + offset); |
727fc41e | 12005 | if ((tls_mask & TLS_TPRELGD) == 0 && toc_symndx != 0) |
102890f0 | 12006 | { |
102890f0 AM |
12007 | rel--; |
12008 | continue; | |
411e1bfb | 12009 | } |
411e1bfb | 12010 | } |
411e1bfb AM |
12011 | break; |
12012 | ||
727fc41e AM |
12013 | case R_PPC64_TLSLD: |
12014 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) | |
12015 | { | |
12016 | unsigned int insn2, insn3; | |
12017 | bfd_vma offset = rel->r_offset; | |
12018 | ||
12019 | if (toc_symndx) | |
12020 | sec = local_sections[toc_symndx]; | |
12021 | for (r_symndx = 0; | |
12022 | r_symndx < symtab_hdr->sh_info; | |
12023 | r_symndx++) | |
12024 | if (local_sections[r_symndx] == sec) | |
12025 | break; | |
12026 | if (r_symndx >= symtab_hdr->sh_info) | |
cf35638d | 12027 | r_symndx = STN_UNDEF; |
727fc41e | 12028 | rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; |
cf35638d | 12029 | if (r_symndx != STN_UNDEF) |
727fc41e AM |
12030 | rel->r_addend -= (local_syms[r_symndx].st_value |
12031 | + sec->output_offset | |
12032 | + sec->output_section->vma); | |
12033 | ||
12034 | r_type = R_PPC64_TPREL16_LO; | |
12035 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
12036 | rel->r_offset = offset + d_offset; | |
12037 | /* Zap the reloc on the _tls_get_addr call too. */ | |
12038 | BFD_ASSERT (offset == rel[1].r_offset); | |
f58d5a2d | 12039 | rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE); |
727fc41e AM |
12040 | insn2 = 0x38630000; /* addi 3,3,0 */ |
12041 | insn3 = bfd_get_32 (output_bfd, | |
12042 | contents + offset + 4); | |
12043 | if (insn3 == NOP | |
12044 | || insn3 == CROR_151515 || insn3 == CROR_313131) | |
12045 | { | |
12046 | rel->r_offset += 4; | |
12047 | bfd_put_32 (output_bfd, insn2, contents + offset + 4); | |
12048 | insn2 = NOP; | |
12049 | } | |
12050 | bfd_put_32 (output_bfd, insn2, contents + offset); | |
12051 | rel--; | |
12052 | continue; | |
12053 | } | |
12054 | break; | |
12055 | ||
411e1bfb | 12056 | case R_PPC64_DTPMOD64: |
951fd09b AM |
12057 | if (rel + 1 < relend |
12058 | && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64) | |
12059 | && rel[1].r_offset == rel->r_offset + 8) | |
411e1bfb | 12060 | { |
951fd09b AM |
12061 | if ((tls_mask & TLS_GD) == 0) |
12062 | { | |
12063 | rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_NONE); | |
12064 | if ((tls_mask & TLS_TPRELGD) != 0) | |
12065 | r_type = R_PPC64_TPREL64; | |
12066 | else | |
12067 | { | |
4ce794b7 | 12068 | bfd_put_64 (output_bfd, 1, contents + rel->r_offset); |
951fd09b AM |
12069 | r_type = R_PPC64_NONE; |
12070 | } | |
12071 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
12072 | } | |
12073 | } | |
12074 | else | |
12075 | { | |
12076 | if ((tls_mask & TLS_LD) == 0) | |
411e1bfb | 12077 | { |
4ce794b7 | 12078 | bfd_put_64 (output_bfd, 1, contents + rel->r_offset); |
411e1bfb | 12079 | r_type = R_PPC64_NONE; |
951fd09b | 12080 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); |
411e1bfb | 12081 | } |
411e1bfb AM |
12082 | } |
12083 | break; | |
12084 | ||
12085 | case R_PPC64_TPREL64: | |
951fd09b | 12086 | if ((tls_mask & TLS_TPREL) == 0) |
411e1bfb AM |
12087 | { |
12088 | r_type = R_PPC64_NONE; | |
12089 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
12090 | } | |
12091 | break; | |
12092 | } | |
12093 | ||
12094 | /* Handle other relocations that tweak non-addend part of insn. */ | |
86c76c7b | 12095 | insn = 0; |
b25116a9 AM |
12096 | max_br_offset = 1 << 25; |
12097 | addend = rel->r_addend; | |
65f38f15 | 12098 | switch (r_type) |
5bd4f169 AM |
12099 | { |
12100 | default: | |
65f38f15 | 12101 | break; |
5bd4f169 | 12102 | |
65f38f15 AM |
12103 | /* Branch taken prediction relocations. */ |
12104 | case R_PPC64_ADDR14_BRTAKEN: | |
12105 | case R_PPC64_REL14_BRTAKEN: | |
cedb70c5 KH |
12106 | insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */ |
12107 | /* Fall thru. */ | |
65f38f15 | 12108 | |
86c76c7b | 12109 | /* Branch not taken prediction relocations. */ |
65f38f15 AM |
12110 | case R_PPC64_ADDR14_BRNTAKEN: |
12111 | case R_PPC64_REL14_BRNTAKEN: | |
411e1bfb AM |
12112 | insn |= bfd_get_32 (output_bfd, |
12113 | contents + rel->r_offset) & ~(0x01 << 21); | |
b25116a9 | 12114 | /* Fall thru. */ |
86c76c7b | 12115 | |
b25116a9 AM |
12116 | case R_PPC64_REL14: |
12117 | max_br_offset = 1 << 15; | |
12118 | /* Fall thru. */ | |
5bd4f169 | 12119 | |
65f38f15 | 12120 | case R_PPC64_REL24: |
ad8e1ba5 AM |
12121 | /* Calls to functions with a different TOC, such as calls to |
12122 | shared objects, need to alter the TOC pointer. This is | |
12123 | done using a linkage stub. A REL24 branching to these | |
12124 | linkage stubs needs to be followed by a nop, as the nop | |
12125 | will be replaced with an instruction to restore the TOC | |
12126 | base pointer. */ | |
8387904d | 12127 | fdh = h; |
b31867b6 AM |
12128 | if (h != NULL |
12129 | && h->oh != NULL | |
12130 | && h->oh->is_func_descriptor) | |
12131 | fdh = ppc_follow_link (h->oh); | |
6abec6bc AM |
12132 | stub_entry = ppc_get_stub_entry (input_section, sec, fdh, rel, htab); |
12133 | if (stub_entry != NULL | |
ad8e1ba5 AM |
12134 | && (stub_entry->stub_type == ppc_stub_plt_call |
12135 | || stub_entry->stub_type == ppc_stub_plt_branch_r2off | |
12136 | || stub_entry->stub_type == ppc_stub_long_branch_r2off)) | |
41bd81ab | 12137 | { |
b25116a9 | 12138 | bfd_boolean can_plt_call = FALSE; |
721956f4 | 12139 | |
eea6121a | 12140 | if (rel->r_offset + 8 <= input_section->size) |
41bd81ab | 12141 | { |
b25116a9 AM |
12142 | unsigned long nop; |
12143 | nop = bfd_get_32 (input_bfd, contents + rel->r_offset + 4); | |
12144 | if (nop == NOP | |
12145 | || nop == CROR_151515 || nop == CROR_313131) | |
41bd81ab | 12146 | { |
a7f2871e AM |
12147 | if (h != NULL |
12148 | && (h == htab->tls_get_addr_fd | |
12149 | || h == htab->tls_get_addr) | |
12150 | && !htab->no_tls_get_addr_opt) | |
12151 | { | |
12152 | /* Special stub used, leave nop alone. */ | |
12153 | } | |
12154 | else | |
12155 | bfd_put_32 (input_bfd, LD_R2_40R1, | |
12156 | contents + rel->r_offset + 4); | |
b25116a9 | 12157 | can_plt_call = TRUE; |
41bd81ab | 12158 | } |
5bd4f169 | 12159 | } |
721956f4 AM |
12160 | |
12161 | if (!can_plt_call) | |
12162 | { | |
ad8e1ba5 AM |
12163 | if (stub_entry->stub_type == ppc_stub_plt_call) |
12164 | { | |
12165 | /* If this is a plain branch rather than a branch | |
4fa1c237 AM |
12166 | and link, don't require a nop. However, don't |
12167 | allow tail calls in a shared library as they | |
12168 | will result in r2 being corrupted. */ | |
b25116a9 AM |
12169 | unsigned long br; |
12170 | br = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
4fa1c237 | 12171 | if (info->executable && (br & 1) == 0) |
b25116a9 | 12172 | can_plt_call = TRUE; |
15b552e9 AM |
12173 | else |
12174 | stub_entry = NULL; | |
ad8e1ba5 | 12175 | } |
6ab189d5 | 12176 | else if (h != NULL |
039b3fef | 12177 | && strcmp (h->elf.root.root.string, |
6ab189d5 AM |
12178 | ".__libc_start_main") == 0) |
12179 | { | |
12180 | /* Allow crt1 branch to go via a toc adjusting stub. */ | |
b25116a9 | 12181 | can_plt_call = TRUE; |
6ab189d5 | 12182 | } |
ad8e1ba5 AM |
12183 | else |
12184 | { | |
12185 | if (strcmp (input_section->output_section->name, | |
12186 | ".init") == 0 | |
12187 | || strcmp (input_section->output_section->name, | |
12188 | ".fini") == 0) | |
12189 | (*_bfd_error_handler) | |
d003868e | 12190 | (_("%B(%A+0x%lx): automatic multiple TOCs " |
ad8e1ba5 AM |
12191 | "not supported using your crt files; " |
12192 | "recompile with -mminimal-toc or upgrade gcc"), | |
d003868e AM |
12193 | input_bfd, |
12194 | input_section, | |
ad8e1ba5 AM |
12195 | (long) rel->r_offset); |
12196 | else | |
12197 | (*_bfd_error_handler) | |
d003868e | 12198 | (_("%B(%A+0x%lx): sibling call optimization to `%s' " |
ad8e1ba5 AM |
12199 | "does not allow automatic multiple TOCs; " |
12200 | "recompile with -mminimal-toc or " | |
12201 | "-fno-optimize-sibling-calls, " | |
12202 | "or make `%s' extern"), | |
d003868e AM |
12203 | input_bfd, |
12204 | input_section, | |
ad8e1ba5 AM |
12205 | (long) rel->r_offset, |
12206 | sym_name, | |
12207 | sym_name); | |
12208 | bfd_set_error (bfd_error_bad_value); | |
12209 | ret = FALSE; | |
12210 | } | |
721956f4 AM |
12211 | } |
12212 | ||
b25116a9 AM |
12213 | if (can_plt_call |
12214 | && stub_entry->stub_type == ppc_stub_plt_call) | |
12215 | unresolved_reloc = FALSE; | |
12216 | } | |
12217 | ||
6abec6bc AM |
12218 | if ((stub_entry == NULL |
12219 | || stub_entry->stub_type == ppc_stub_long_branch | |
12220 | || stub_entry->stub_type == ppc_stub_plt_branch) | |
8387904d AM |
12221 | && get_opd_info (sec) != NULL) |
12222 | { | |
12223 | /* The branch destination is the value of the opd entry. */ | |
4cc603a5 AM |
12224 | bfd_vma off = (relocation + addend |
12225 | - sec->output_section->vma | |
12226 | - sec->output_offset); | |
8387904d AM |
12227 | bfd_vma dest = opd_entry_value (sec, off, NULL, NULL); |
12228 | if (dest != (bfd_vma) -1) | |
12229 | { | |
12230 | relocation = dest; | |
12231 | addend = 0; | |
12232 | } | |
12233 | } | |
12234 | ||
b25116a9 AM |
12235 | /* If the branch is out of reach we ought to have a long |
12236 | branch stub. */ | |
12237 | from = (rel->r_offset | |
12238 | + input_section->output_offset | |
12239 | + input_section->output_section->vma); | |
12240 | ||
6abec6bc AM |
12241 | if (stub_entry != NULL |
12242 | && (stub_entry->stub_type == ppc_stub_long_branch | |
12243 | || stub_entry->stub_type == ppc_stub_plt_branch) | |
12244 | && (r_type == R_PPC64_ADDR14_BRTAKEN | |
12245 | || r_type == R_PPC64_ADDR14_BRNTAKEN | |
12246 | || (relocation + addend - from + max_br_offset | |
12247 | < 2 * max_br_offset))) | |
12248 | /* Don't use the stub if this branch is in range. */ | |
12249 | stub_entry = NULL; | |
b25116a9 AM |
12250 | |
12251 | if (stub_entry != NULL) | |
12252 | { | |
12253 | /* Munge up the value and addend so that we call the stub | |
12254 | rather than the procedure directly. */ | |
12255 | relocation = (stub_entry->stub_offset | |
12256 | + stub_entry->stub_sec->output_offset | |
12257 | + stub_entry->stub_sec->output_section->vma); | |
12258 | addend = 0; | |
12259 | } | |
12260 | ||
12261 | if (insn != 0) | |
12262 | { | |
12263 | if (is_power4) | |
721956f4 | 12264 | { |
b25116a9 AM |
12265 | /* Set 'a' bit. This is 0b00010 in BO field for branch |
12266 | on CR(BI) insns (BO == 001at or 011at), and 0b01000 | |
12267 | for branch on CTR insns (BO == 1a00t or 1a01t). */ | |
12268 | if ((insn & (0x14 << 21)) == (0x04 << 21)) | |
12269 | insn |= 0x02 << 21; | |
12270 | else if ((insn & (0x14 << 21)) == (0x10 << 21)) | |
12271 | insn |= 0x08 << 21; | |
12272 | else | |
12273 | break; | |
12274 | } | |
12275 | else | |
12276 | { | |
12277 | /* Invert 'y' bit if not the default. */ | |
4cc603a5 | 12278 | if ((bfd_signed_vma) (relocation + addend - from) < 0) |
b25116a9 | 12279 | insn ^= 0x01 << 21; |
721956f4 | 12280 | } |
b25116a9 AM |
12281 | |
12282 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset); | |
5bd4f169 | 12283 | } |
e86ce104 | 12284 | |
06da1e8e AM |
12285 | /* NOP out calls to undefined weak functions. |
12286 | We can thus call a weak function without first | |
12287 | checking whether the function is defined. */ | |
b25116a9 | 12288 | else if (h != NULL |
039b3fef | 12289 | && h->elf.root.type == bfd_link_hash_undefweak |
766bc656 | 12290 | && h->elf.dynindx == -1 |
b25116a9 AM |
12291 | && r_type == R_PPC64_REL24 |
12292 | && relocation == 0 | |
4cc603a5 | 12293 | && addend == 0) |
e86ce104 | 12294 | { |
06da1e8e AM |
12295 | bfd_put_32 (output_bfd, NOP, contents + rel->r_offset); |
12296 | continue; | |
e86ce104 | 12297 | } |
65f38f15 AM |
12298 | break; |
12299 | } | |
5bd4f169 | 12300 | |
65f38f15 | 12301 | /* Set `addend'. */ |
411e1bfb | 12302 | tls_type = 0; |
65f38f15 AM |
12303 | switch (r_type) |
12304 | { | |
12305 | default: | |
12306 | (*_bfd_error_handler) | |
d003868e AM |
12307 | (_("%B: unknown relocation type %d for symbol %s"), |
12308 | input_bfd, (int) r_type, sym_name); | |
5bd4f169 | 12309 | |
65f38f15 | 12310 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 12311 | ret = FALSE; |
65f38f15 | 12312 | continue; |
5bd4f169 | 12313 | |
65f38f15 | 12314 | case R_PPC64_NONE: |
411e1bfb | 12315 | case R_PPC64_TLS: |
727fc41e AM |
12316 | case R_PPC64_TLSGD: |
12317 | case R_PPC64_TLSLD: | |
04c9666a AM |
12318 | case R_PPC64_GNU_VTINHERIT: |
12319 | case R_PPC64_GNU_VTENTRY: | |
65f38f15 | 12320 | continue; |
5bd4f169 AM |
12321 | |
12322 | /* GOT16 relocations. Like an ADDR16 using the symbol's | |
12323 | address in the GOT as relocation value instead of the | |
411e1bfb | 12324 | symbol's value itself. Also, create a GOT entry for the |
5bd4f169 | 12325 | symbol and put the symbol value there. */ |
411e1bfb AM |
12326 | case R_PPC64_GOT_TLSGD16: |
12327 | case R_PPC64_GOT_TLSGD16_LO: | |
12328 | case R_PPC64_GOT_TLSGD16_HI: | |
12329 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b | 12330 | tls_type = TLS_TLS | TLS_GD; |
411e1bfb AM |
12331 | goto dogot; |
12332 | ||
12333 | case R_PPC64_GOT_TLSLD16: | |
12334 | case R_PPC64_GOT_TLSLD16_LO: | |
12335 | case R_PPC64_GOT_TLSLD16_HI: | |
12336 | case R_PPC64_GOT_TLSLD16_HA: | |
951fd09b | 12337 | tls_type = TLS_TLS | TLS_LD; |
411e1bfb AM |
12338 | goto dogot; |
12339 | ||
12340 | case R_PPC64_GOT_TPREL16_DS: | |
12341 | case R_PPC64_GOT_TPREL16_LO_DS: | |
12342 | case R_PPC64_GOT_TPREL16_HI: | |
12343 | case R_PPC64_GOT_TPREL16_HA: | |
12344 | tls_type = TLS_TLS | TLS_TPREL; | |
12345 | goto dogot; | |
12346 | ||
12347 | case R_PPC64_GOT_DTPREL16_DS: | |
12348 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
12349 | case R_PPC64_GOT_DTPREL16_HI: | |
12350 | case R_PPC64_GOT_DTPREL16_HA: | |
12351 | tls_type = TLS_TLS | TLS_DTPREL; | |
12352 | goto dogot; | |
12353 | ||
65f38f15 AM |
12354 | case R_PPC64_GOT16: |
12355 | case R_PPC64_GOT16_LO: | |
12356 | case R_PPC64_GOT16_HI: | |
12357 | case R_PPC64_GOT16_HA: | |
12358 | case R_PPC64_GOT16_DS: | |
12359 | case R_PPC64_GOT16_LO_DS: | |
411e1bfb | 12360 | dogot: |
5bd4f169 AM |
12361 | { |
12362 | /* Relocation is to the entry for this symbol in the global | |
12363 | offset table. */ | |
e717da7e | 12364 | asection *got; |
d881513a | 12365 | bfd_vma *offp; |
5bd4f169 | 12366 | bfd_vma off; |
d881513a | 12367 | unsigned long indx = 0; |
927be08e | 12368 | struct got_entry *ent; |
65f38f15 | 12369 | |
d881513a AM |
12370 | if (tls_type == (TLS_TLS | TLS_LD) |
12371 | && (h == NULL | |
f5385ebf | 12372 | || !h->elf.def_dynamic)) |
927be08e | 12373 | ent = ppc64_tlsld_got (input_bfd); |
411e1bfb | 12374 | else |
5bd4f169 | 12375 | { |
5bd4f169 | 12376 | |
d881513a AM |
12377 | if (h != NULL) |
12378 | { | |
12379 | bfd_boolean dyn = htab->elf.dynamic_sections_created; | |
039b3fef AM |
12380 | if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, |
12381 | &h->elf) | |
d881513a | 12382 | || (info->shared |
726d3ab0 | 12383 | && SYMBOL_CALLS_LOCAL (info, &h->elf))) |
d881513a AM |
12384 | /* This is actually a static link, or it is a |
12385 | -Bsymbolic link and the symbol is defined | |
12386 | locally, or the symbol was forced to be local | |
12387 | because of a version file. */ | |
12388 | ; | |
12389 | else | |
12390 | { | |
039b3fef | 12391 | indx = h->elf.dynindx; |
d881513a AM |
12392 | unresolved_reloc = FALSE; |
12393 | } | |
039b3fef | 12394 | ent = h->elf.got.glist; |
d881513a | 12395 | } |
411e1bfb | 12396 | else |
5bd4f169 | 12397 | { |
d881513a AM |
12398 | if (local_got_ents == NULL) |
12399 | abort (); | |
12400 | ent = local_got_ents[r_symndx]; | |
5bd4f169 | 12401 | } |
d881513a AM |
12402 | |
12403 | for (; ent != NULL; ent = ent->next) | |
4cc603a5 | 12404 | if (ent->addend == orig_addend |
e717da7e | 12405 | && ent->owner == input_bfd |
d881513a AM |
12406 | && ent->tls_type == tls_type) |
12407 | break; | |
5bd4f169 | 12408 | } |
411e1bfb | 12409 | |
927be08e AM |
12410 | if (ent == NULL) |
12411 | abort (); | |
12412 | if (ent->is_indirect) | |
12413 | ent = ent->got.ent; | |
12414 | offp = &ent->got.offset; | |
12415 | got = ppc64_elf_tdata (ent->owner)->got; | |
e717da7e AM |
12416 | if (got == NULL) |
12417 | abort (); | |
12418 | ||
411e1bfb AM |
12419 | /* The offset must always be a multiple of 8. We use the |
12420 | least significant bit to record whether we have already | |
12421 | processed this entry. */ | |
d881513a | 12422 | off = *offp; |
411e1bfb AM |
12423 | if ((off & 1) != 0) |
12424 | off &= ~1; | |
5bd4f169 AM |
12425 | else |
12426 | { | |
411e1bfb AM |
12427 | /* Generate relocs for the dynamic linker, except in |
12428 | the case of TLSLD where we'll use one entry per | |
12429 | module. */ | |
25f23106 AM |
12430 | asection *relgot; |
12431 | bfd_boolean ifunc; | |
e717da7e | 12432 | |
d881513a | 12433 | *offp = off | 1; |
25f23106 AM |
12434 | relgot = NULL; |
12435 | ifunc = (h != NULL | |
12436 | ? h->elf.type == STT_GNU_IFUNC | |
12437 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC); | |
4e795f50 | 12438 | if ((info->shared || indx != 0) |
927be08e AM |
12439 | && (h == NULL |
12440 | || (tls_type == (TLS_TLS | TLS_LD) | |
12441 | && !h->elf.def_dynamic) | |
039b3fef AM |
12442 | || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT |
12443 | || h->elf.root.type != bfd_link_hash_undefweak)) | |
927be08e | 12444 | relgot = ppc64_elf_tdata (ent->owner)->relgot; |
25f23106 AM |
12445 | else if (ifunc) |
12446 | relgot = htab->reliplt; | |
12447 | if (relgot != NULL) | |
5bd4f169 | 12448 | { |
e717da7e AM |
12449 | outrel.r_offset = (got->output_section->vma |
12450 | + got->output_offset | |
411e1bfb | 12451 | + off); |
4cc603a5 | 12452 | outrel.r_addend = addend; |
d881513a | 12453 | if (tls_type & (TLS_LD | TLS_GD)) |
5bd4f169 | 12454 | { |
411e1bfb | 12455 | outrel.r_addend = 0; |
e515b051 | 12456 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPMOD64); |
d881513a AM |
12457 | if (tls_type == (TLS_TLS | TLS_GD)) |
12458 | { | |
e717da7e AM |
12459 | loc = relgot->contents; |
12460 | loc += (relgot->reloc_count++ | |
d881513a AM |
12461 | * sizeof (Elf64_External_Rela)); |
12462 | bfd_elf64_swap_reloca_out (output_bfd, | |
12463 | &outrel, loc); | |
e515b051 | 12464 | outrel.r_offset += 8; |
4cc603a5 | 12465 | outrel.r_addend = addend; |
d881513a AM |
12466 | outrel.r_info |
12467 | = ELF64_R_INFO (indx, R_PPC64_DTPREL64); | |
d881513a | 12468 | } |
411e1bfb | 12469 | } |
951fd09b | 12470 | else if (tls_type == (TLS_TLS | TLS_DTPREL)) |
411e1bfb | 12471 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64); |
951fd09b | 12472 | else if (tls_type == (TLS_TLS | TLS_TPREL)) |
411e1bfb | 12473 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_TPREL64); |
25f23106 AM |
12474 | else if (indx != 0) |
12475 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT); | |
12476 | else | |
81407a69 | 12477 | { |
25f23106 AM |
12478 | if (ifunc) |
12479 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE); | |
12480 | else | |
12481 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
81407a69 AM |
12482 | |
12483 | /* Write the .got section contents for the sake | |
12484 | of prelink. */ | |
e717da7e | 12485 | loc = got->contents + off; |
23fbd6fa JJ |
12486 | bfd_put_64 (output_bfd, outrel.r_addend + relocation, |
12487 | loc); | |
81407a69 | 12488 | } |
81407a69 AM |
12489 | |
12490 | if (indx == 0 && tls_type != (TLS_TLS | TLS_LD)) | |
e515b051 AM |
12491 | { |
12492 | outrel.r_addend += relocation; | |
12493 | if (tls_type & (TLS_GD | TLS_DTPREL | TLS_TPREL)) | |
e1918d23 | 12494 | outrel.r_addend -= htab->elf.tls_sec->vma; |
e515b051 | 12495 | } |
e717da7e AM |
12496 | loc = relgot->contents; |
12497 | loc += (relgot->reloc_count++ | |
411e1bfb AM |
12498 | * sizeof (Elf64_External_Rela)); |
12499 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); | |
12500 | } | |
12501 | ||
ad8e1ba5 | 12502 | /* Init the .got section contents here if we're not |
81407a69 | 12503 | emitting a reloc. */ |
d881513a | 12504 | else |
411e1bfb | 12505 | { |
4cc603a5 | 12506 | relocation += addend; |
7b609f53 AM |
12507 | if (tls_type == (TLS_TLS | TLS_LD)) |
12508 | relocation = 1; | |
12509 | else if (tls_type != 0) | |
411e1bfb | 12510 | { |
e1918d23 | 12511 | relocation -= htab->elf.tls_sec->vma + DTP_OFFSET; |
7b609f53 | 12512 | if (tls_type == (TLS_TLS | TLS_TPREL)) |
411e1bfb | 12513 | relocation += DTP_OFFSET - TP_OFFSET; |
5bd4f169 | 12514 | |
7b609f53 AM |
12515 | if (tls_type == (TLS_TLS | TLS_GD)) |
12516 | { | |
12517 | bfd_put_64 (output_bfd, relocation, | |
e717da7e | 12518 | got->contents + off + 8); |
7b609f53 AM |
12519 | relocation = 1; |
12520 | } | |
411e1bfb | 12521 | } |
7b609f53 | 12522 | |
411e1bfb | 12523 | bfd_put_64 (output_bfd, relocation, |
e717da7e | 12524 | got->contents + off); |
5bd4f169 AM |
12525 | } |
12526 | } | |
12527 | ||
65f38f15 AM |
12528 | if (off >= (bfd_vma) -2) |
12529 | abort (); | |
12530 | ||
bf102f86 AM |
12531 | relocation = got->output_section->vma + got->output_offset + off; |
12532 | addend = -(TOCstart + htab->stub_group[input_section->id].toc_off); | |
5bd4f169 | 12533 | } |
65f38f15 AM |
12534 | break; |
12535 | ||
12536 | case R_PPC64_PLT16_HA: | |
12537 | case R_PPC64_PLT16_HI: | |
12538 | case R_PPC64_PLT16_LO: | |
12539 | case R_PPC64_PLT32: | |
12540 | case R_PPC64_PLT64: | |
12541 | /* Relocation is to the entry for this symbol in the | |
12542 | procedure linkage table. */ | |
12543 | ||
12544 | /* Resolve a PLT reloc against a local symbol directly, | |
12545 | without using the procedure linkage table. */ | |
12546 | if (h == NULL) | |
12547 | break; | |
12548 | ||
411e1bfb AM |
12549 | /* It's possible that we didn't make a PLT entry for this |
12550 | symbol. This happens when statically linking PIC code, | |
12551 | or when using -Bsymbolic. Go find a match if there is a | |
12552 | PLT entry. */ | |
4ce794b7 | 12553 | if (htab->plt != NULL) |
65f38f15 | 12554 | { |
411e1bfb | 12555 | struct plt_entry *ent; |
039b3fef | 12556 | for (ent = h->elf.plt.plist; ent != NULL; ent = ent->next) |
4cc603a5 | 12557 | if (ent->addend == orig_addend |
411e1bfb AM |
12558 | && ent->plt.offset != (bfd_vma) -1) |
12559 | { | |
4ce794b7 AM |
12560 | relocation = (htab->plt->output_section->vma |
12561 | + htab->plt->output_offset | |
411e1bfb AM |
12562 | + ent->plt.offset); |
12563 | unresolved_reloc = FALSE; | |
12564 | } | |
65f38f15 | 12565 | } |
65f38f15 | 12566 | break; |
5bd4f169 | 12567 | |
0b13192e AM |
12568 | case R_PPC64_TOC: |
12569 | /* Relocation value is TOC base. */ | |
12570 | relocation = TOCstart; | |
cf35638d | 12571 | if (r_symndx == STN_UNDEF) |
0b13192e | 12572 | relocation += htab->stub_group[input_section->id].toc_off; |
8517fae7 AM |
12573 | else if (unresolved_reloc) |
12574 | ; | |
12575 | else if (sec != NULL && sec->id <= htab->top_id) | |
0b13192e AM |
12576 | relocation += htab->stub_group[sec->id].toc_off; |
12577 | else | |
12578 | unresolved_reloc = TRUE; | |
ab96bf03 | 12579 | goto dodyn; |
0b13192e | 12580 | |
5bd4f169 AM |
12581 | /* TOC16 relocs. We want the offset relative to the TOC base, |
12582 | which is the address of the start of the TOC plus 0x8000. | |
12583 | The TOC consists of sections .got, .toc, .tocbss, and .plt, | |
12584 | in this order. */ | |
65f38f15 AM |
12585 | case R_PPC64_TOC16: |
12586 | case R_PPC64_TOC16_LO: | |
12587 | case R_PPC64_TOC16_HI: | |
12588 | case R_PPC64_TOC16_DS: | |
12589 | case R_PPC64_TOC16_LO_DS: | |
12590 | case R_PPC64_TOC16_HA: | |
ad8e1ba5 | 12591 | addend -= TOCstart + htab->stub_group[input_section->id].toc_off; |
5bd4f169 AM |
12592 | break; |
12593 | ||
12594 | /* Relocate against the beginning of the section. */ | |
65f38f15 AM |
12595 | case R_PPC64_SECTOFF: |
12596 | case R_PPC64_SECTOFF_LO: | |
12597 | case R_PPC64_SECTOFF_HI: | |
12598 | case R_PPC64_SECTOFF_DS: | |
12599 | case R_PPC64_SECTOFF_LO_DS: | |
12600 | case R_PPC64_SECTOFF_HA: | |
4ce794b7 | 12601 | if (sec != NULL) |
65f38f15 | 12602 | addend -= sec->output_section->vma; |
5bd4f169 AM |
12603 | break; |
12604 | ||
25f23106 AM |
12605 | case R_PPC64_REL16: |
12606 | case R_PPC64_REL16_LO: | |
12607 | case R_PPC64_REL16_HI: | |
12608 | case R_PPC64_REL16_HA: | |
12609 | break; | |
12610 | ||
721956f4 AM |
12611 | case R_PPC64_REL14: |
12612 | case R_PPC64_REL14_BRNTAKEN: | |
12613 | case R_PPC64_REL14_BRTAKEN: | |
5d1634d7 AM |
12614 | case R_PPC64_REL24: |
12615 | break; | |
12616 | ||
411e1bfb AM |
12617 | case R_PPC64_TPREL16: |
12618 | case R_PPC64_TPREL16_LO: | |
12619 | case R_PPC64_TPREL16_HI: | |
12620 | case R_PPC64_TPREL16_HA: | |
12621 | case R_PPC64_TPREL16_DS: | |
12622 | case R_PPC64_TPREL16_LO_DS: | |
12623 | case R_PPC64_TPREL16_HIGHER: | |
12624 | case R_PPC64_TPREL16_HIGHERA: | |
12625 | case R_PPC64_TPREL16_HIGHEST: | |
12626 | case R_PPC64_TPREL16_HIGHESTA: | |
766bc656 AM |
12627 | if (h != NULL |
12628 | && h->elf.root.type == bfd_link_hash_undefweak | |
12629 | && h->elf.dynindx == -1) | |
12630 | { | |
12631 | /* Make this relocation against an undefined weak symbol | |
12632 | resolve to zero. This is really just a tweak, since | |
12633 | code using weak externs ought to check that they are | |
12634 | defined before using them. */ | |
12635 | bfd_byte *p = contents + rel->r_offset - d_offset; | |
12636 | ||
12637 | insn = bfd_get_32 (output_bfd, p); | |
12638 | insn = _bfd_elf_ppc_at_tprel_transform (insn, 13); | |
12639 | if (insn != 0) | |
12640 | bfd_put_32 (output_bfd, insn, p); | |
12641 | break; | |
12642 | } | |
e1918d23 | 12643 | addend -= htab->elf.tls_sec->vma + TP_OFFSET; |
411e1bfb AM |
12644 | if (info->shared) |
12645 | /* The TPREL16 relocs shouldn't really be used in shared | |
12646 | libs as they will result in DT_TEXTREL being set, but | |
12647 | support them anyway. */ | |
12648 | goto dodyn; | |
12649 | break; | |
12650 | ||
12651 | case R_PPC64_DTPREL16: | |
12652 | case R_PPC64_DTPREL16_LO: | |
12653 | case R_PPC64_DTPREL16_HI: | |
12654 | case R_PPC64_DTPREL16_HA: | |
12655 | case R_PPC64_DTPREL16_DS: | |
12656 | case R_PPC64_DTPREL16_LO_DS: | |
12657 | case R_PPC64_DTPREL16_HIGHER: | |
12658 | case R_PPC64_DTPREL16_HIGHERA: | |
12659 | case R_PPC64_DTPREL16_HIGHEST: | |
12660 | case R_PPC64_DTPREL16_HIGHESTA: | |
e1918d23 | 12661 | addend -= htab->elf.tls_sec->vma + DTP_OFFSET; |
411e1bfb AM |
12662 | break; |
12663 | ||
e515b051 AM |
12664 | case R_PPC64_DTPMOD64: |
12665 | relocation = 1; | |
12666 | addend = 0; | |
12667 | goto dodyn; | |
12668 | ||
411e1bfb | 12669 | case R_PPC64_TPREL64: |
e1918d23 | 12670 | addend -= htab->elf.tls_sec->vma + TP_OFFSET; |
411e1bfb AM |
12671 | goto dodyn; |
12672 | ||
12673 | case R_PPC64_DTPREL64: | |
e1918d23 | 12674 | addend -= htab->elf.tls_sec->vma + DTP_OFFSET; |
411e1bfb AM |
12675 | /* Fall thru */ |
12676 | ||
65f38f15 AM |
12677 | /* Relocations that may need to be propagated if this is a |
12678 | dynamic object. */ | |
04c9666a | 12679 | case R_PPC64_REL30: |
65f38f15 AM |
12680 | case R_PPC64_REL32: |
12681 | case R_PPC64_REL64: | |
12682 | case R_PPC64_ADDR14: | |
12683 | case R_PPC64_ADDR14_BRNTAKEN: | |
12684 | case R_PPC64_ADDR14_BRTAKEN: | |
12685 | case R_PPC64_ADDR16: | |
12686 | case R_PPC64_ADDR16_DS: | |
12687 | case R_PPC64_ADDR16_HA: | |
12688 | case R_PPC64_ADDR16_HI: | |
12689 | case R_PPC64_ADDR16_HIGHER: | |
12690 | case R_PPC64_ADDR16_HIGHERA: | |
12691 | case R_PPC64_ADDR16_HIGHEST: | |
12692 | case R_PPC64_ADDR16_HIGHESTA: | |
12693 | case R_PPC64_ADDR16_LO: | |
12694 | case R_PPC64_ADDR16_LO_DS: | |
12695 | case R_PPC64_ADDR24: | |
65f38f15 AM |
12696 | case R_PPC64_ADDR32: |
12697 | case R_PPC64_ADDR64: | |
12698 | case R_PPC64_UADDR16: | |
12699 | case R_PPC64_UADDR32: | |
12700 | case R_PPC64_UADDR64: | |
411e1bfb | 12701 | dodyn: |
5d1634d7 | 12702 | if ((input_section->flags & SEC_ALLOC) == 0) |
ec338859 AM |
12703 | break; |
12704 | ||
41bd81ab AM |
12705 | if (NO_OPD_RELOCS && is_opd) |
12706 | break; | |
12707 | ||
65f38f15 | 12708 | if ((info->shared |
4e795f50 | 12709 | && (h == NULL |
039b3fef AM |
12710 | || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT |
12711 | || h->elf.root.type != bfd_link_hash_undefweak) | |
1d483afe | 12712 | && (must_be_dyn_reloc (info, r_type) |
039b3fef | 12713 | || !SYMBOL_CALLS_LOCAL (info, &h->elf))) |
f4656909 AM |
12714 | || (ELIMINATE_COPY_RELOCS |
12715 | && !info->shared | |
65f38f15 | 12716 | && h != NULL |
039b3fef | 12717 | && h->elf.dynindx != -1 |
f5385ebf | 12718 | && !h->elf.non_got_ref |
25f23106 AM |
12719 | && !h->elf.def_regular) |
12720 | || (!info->shared | |
12721 | && (h != NULL | |
12722 | ? h->elf.type == STT_GNU_IFUNC | |
12723 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC))) | |
65f38f15 | 12724 | { |
b34976b6 | 12725 | bfd_boolean skip, relocate; |
65f38f15 | 12726 | asection *sreloc; |
1cf1f670 | 12727 | bfd_vma out_off; |
65f38f15 AM |
12728 | |
12729 | /* When generating a dynamic object, these relocations | |
12730 | are copied into the output file to be resolved at run | |
12731 | time. */ | |
12732 | ||
b34976b6 AM |
12733 | skip = FALSE; |
12734 | relocate = FALSE; | |
65f38f15 | 12735 | |
1cf1f670 AM |
12736 | out_off = _bfd_elf_section_offset (output_bfd, info, |
12737 | input_section, rel->r_offset); | |
12738 | if (out_off == (bfd_vma) -1) | |
b34976b6 | 12739 | skip = TRUE; |
1cf1f670 | 12740 | else if (out_off == (bfd_vma) -2) |
b34976b6 | 12741 | skip = TRUE, relocate = TRUE; |
1cf1f670 AM |
12742 | out_off += (input_section->output_section->vma |
12743 | + input_section->output_offset); | |
12744 | outrel.r_offset = out_off; | |
411e1bfb | 12745 | outrel.r_addend = rel->r_addend; |
65f38f15 | 12746 | |
1cf1f670 AM |
12747 | /* Optimize unaligned reloc use. */ |
12748 | if ((r_type == R_PPC64_ADDR64 && (out_off & 7) != 0) | |
12749 | || (r_type == R_PPC64_UADDR64 && (out_off & 7) == 0)) | |
12750 | r_type ^= R_PPC64_ADDR64 ^ R_PPC64_UADDR64; | |
12751 | else if ((r_type == R_PPC64_ADDR32 && (out_off & 3) != 0) | |
12752 | || (r_type == R_PPC64_UADDR32 && (out_off & 3) == 0)) | |
12753 | r_type ^= R_PPC64_ADDR32 ^ R_PPC64_UADDR32; | |
12754 | else if ((r_type == R_PPC64_ADDR16 && (out_off & 1) != 0) | |
12755 | || (r_type == R_PPC64_UADDR16 && (out_off & 1) == 0)) | |
12756 | r_type ^= R_PPC64_ADDR16 ^ R_PPC64_UADDR16; | |
12757 | ||
65f38f15 | 12758 | if (skip) |
0bb2d96a | 12759 | memset (&outrel, 0, sizeof outrel); |
726d3ab0 | 12760 | else if (!SYMBOL_CALLS_LOCAL (info, &h->elf) |
0b13192e AM |
12761 | && !is_opd |
12762 | && r_type != R_PPC64_TOC) | |
039b3fef | 12763 | outrel.r_info = ELF64_R_INFO (h->elf.dynindx, r_type); |
65f38f15 AM |
12764 | else |
12765 | { | |
41bd81ab AM |
12766 | /* This symbol is local, or marked to become local, |
12767 | or this is an opd section reloc which must point | |
12768 | at a local function. */ | |
65f38f15 | 12769 | outrel.r_addend += relocation; |
e86ce104 | 12770 | if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC) |
65f38f15 | 12771 | { |
3fad3c7c | 12772 | if (is_opd && h != NULL) |
afbe61cf AM |
12773 | { |
12774 | /* Lie about opd entries. This case occurs | |
12775 | when building shared libraries and we | |
12776 | reference a function in another shared | |
3fad3c7c AM |
12777 | lib. The same thing happens for a weak |
12778 | definition in an application that's | |
12779 | overridden by a strong definition in a | |
12780 | shared lib. (I believe this is a generic | |
12781 | bug in binutils handling of weak syms.) | |
12782 | In these cases we won't use the opd | |
1e2f5b6e | 12783 | entry in this lib. */ |
b34976b6 | 12784 | unresolved_reloc = FALSE; |
afbe61cf | 12785 | } |
25f23106 AM |
12786 | if (!is_opd |
12787 | && r_type == R_PPC64_ADDR64 | |
12788 | && (h != NULL | |
12789 | ? h->elf.type == STT_GNU_IFUNC | |
12790 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)) | |
12791 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE); | |
12792 | else | |
12793 | { | |
12794 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
81407a69 | 12795 | |
25f23106 AM |
12796 | /* We need to relocate .opd contents for ld.so. |
12797 | Prelink also wants simple and consistent rules | |
12798 | for relocs. This make all RELATIVE relocs have | |
12799 | *r_offset equal to r_addend. */ | |
12800 | relocate = TRUE; | |
12801 | } | |
65f38f15 AM |
12802 | } |
12803 | else | |
12804 | { | |
12805 | long indx = 0; | |
12806 | ||
25f23106 AM |
12807 | if (h != NULL |
12808 | ? h->elf.type == STT_GNU_IFUNC | |
12809 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
12810 | { | |
12811 | (*_bfd_error_handler) | |
12812 | (_("%B(%A+0x%lx): relocation %s for indirect " | |
12813 | "function %s unsupported"), | |
12814 | input_bfd, | |
12815 | input_section, | |
12816 | (long) rel->r_offset, | |
12817 | ppc64_elf_howto_table[r_type]->name, | |
12818 | sym_name); | |
12819 | ret = FALSE; | |
12820 | } | |
cf35638d | 12821 | else if (r_symndx == STN_UNDEF || bfd_is_abs_section (sec)) |
65f38f15 AM |
12822 | ; |
12823 | else if (sec == NULL || sec->owner == NULL) | |
12824 | { | |
12825 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 12826 | return FALSE; |
65f38f15 AM |
12827 | } |
12828 | else | |
12829 | { | |
12830 | asection *osec; | |
12831 | ||
12832 | osec = sec->output_section; | |
12833 | indx = elf_section_data (osec)->dynindx; | |
12834 | ||
74541ad4 AM |
12835 | if (indx == 0) |
12836 | { | |
12837 | if ((osec->flags & SEC_READONLY) == 0 | |
12838 | && htab->elf.data_index_section != NULL) | |
12839 | osec = htab->elf.data_index_section; | |
12840 | else | |
12841 | osec = htab->elf.text_index_section; | |
12842 | indx = elf_section_data (osec)->dynindx; | |
12843 | } | |
12844 | BFD_ASSERT (indx != 0); | |
12845 | ||
65f38f15 AM |
12846 | /* We are turning this relocation into one |
12847 | against a section symbol, so subtract out | |
12848 | the output section's address but not the | |
12849 | offset of the input section in the output | |
12850 | section. */ | |
12851 | outrel.r_addend -= osec->vma; | |
12852 | } | |
12853 | ||
12854 | outrel.r_info = ELF64_R_INFO (indx, r_type); | |
12855 | } | |
12856 | } | |
12857 | ||
12858 | sreloc = elf_section_data (input_section)->sreloc; | |
25f23106 AM |
12859 | if (!htab->elf.dynamic_sections_created) |
12860 | sreloc = htab->reliplt; | |
65f38f15 AM |
12861 | if (sreloc == NULL) |
12862 | abort (); | |
12863 | ||
dfbb6ac9 AM |
12864 | if (sreloc->reloc_count * sizeof (Elf64_External_Rela) |
12865 | >= sreloc->size) | |
12866 | abort (); | |
947216bf AM |
12867 | loc = sreloc->contents; |
12868 | loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela); | |
65f38f15 AM |
12869 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); |
12870 | ||
12871 | /* If this reloc is against an external symbol, it will | |
12872 | be computed at runtime, so there's no need to do | |
81407a69 AM |
12873 | anything now. However, for the sake of prelink ensure |
12874 | that the section contents are a known value. */ | |
65f38f15 | 12875 | if (! relocate) |
81407a69 AM |
12876 | { |
12877 | unresolved_reloc = FALSE; | |
12878 | /* The value chosen here is quite arbitrary as ld.so | |
12879 | ignores section contents except for the special | |
12880 | case of .opd where the contents might be accessed | |
12881 | before relocation. Choose zero, as that won't | |
12882 | cause reloc overflow. */ | |
12883 | relocation = 0; | |
12884 | addend = 0; | |
12885 | /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs | |
12886 | to improve backward compatibility with older | |
12887 | versions of ld. */ | |
12888 | if (r_type == R_PPC64_ADDR64) | |
12889 | addend = outrel.r_addend; | |
12890 | /* Adjust pc_relative relocs to have zero in *r_offset. */ | |
4ce794b7 | 12891 | else if (ppc64_elf_howto_table[r_type]->pc_relative) |
000732f7 AM |
12892 | addend = (input_section->output_section->vma |
12893 | + input_section->output_offset | |
12894 | + rel->r_offset); | |
81407a69 | 12895 | } |
65f38f15 | 12896 | } |
5bd4f169 AM |
12897 | break; |
12898 | ||
65f38f15 AM |
12899 | case R_PPC64_COPY: |
12900 | case R_PPC64_GLOB_DAT: | |
12901 | case R_PPC64_JMP_SLOT: | |
25f23106 | 12902 | case R_PPC64_JMP_IREL: |
65f38f15 AM |
12903 | case R_PPC64_RELATIVE: |
12904 | /* We shouldn't ever see these dynamic relocs in relocatable | |
12905 | files. */ | |
ae9a127f | 12906 | /* Fall through. */ |
65f38f15 AM |
12907 | |
12908 | case R_PPC64_PLTGOT16: | |
12909 | case R_PPC64_PLTGOT16_DS: | |
12910 | case R_PPC64_PLTGOT16_HA: | |
12911 | case R_PPC64_PLTGOT16_HI: | |
12912 | case R_PPC64_PLTGOT16_LO: | |
12913 | case R_PPC64_PLTGOT16_LO_DS: | |
12914 | case R_PPC64_PLTREL32: | |
12915 | case R_PPC64_PLTREL64: | |
12916 | /* These ones haven't been implemented yet. */ | |
12917 | ||
12918 | (*_bfd_error_handler) | |
d003868e AM |
12919 | (_("%B: relocation %s is not supported for symbol %s."), |
12920 | input_bfd, | |
4ce794b7 | 12921 | ppc64_elf_howto_table[r_type]->name, sym_name); |
5bd4f169 AM |
12922 | |
12923 | bfd_set_error (bfd_error_invalid_operation); | |
b34976b6 | 12924 | ret = FALSE; |
5bd4f169 | 12925 | continue; |
65f38f15 | 12926 | } |
5bd4f169 | 12927 | |
67f0cbdb AM |
12928 | /* Multi-instruction sequences that access the TOC can be |
12929 | optimized, eg. addis ra,r2,0; addi rb,ra,x; | |
12930 | to nop; addi rb,r2,x; */ | |
12931 | switch (r_type) | |
12932 | { | |
12933 | default: | |
12934 | break; | |
12935 | ||
12936 | case R_PPC64_GOT_TLSLD16_HI: | |
12937 | case R_PPC64_GOT_TLSGD16_HI: | |
12938 | case R_PPC64_GOT_TPREL16_HI: | |
12939 | case R_PPC64_GOT_DTPREL16_HI: | |
12940 | case R_PPC64_GOT16_HI: | |
12941 | case R_PPC64_TOC16_HI: | |
12942 | /* These relocs would only be useful if building up an | |
12943 | offset to later add to r2, perhaps in an indexed | |
12944 | addressing mode instruction. Don't try to optimize. | |
12945 | Unfortunately, the possibility of someone building up an | |
12946 | offset like this or even with the HA relocs, means that | |
12947 | we need to check the high insn when optimizing the low | |
12948 | insn. */ | |
12949 | break; | |
12950 | ||
12951 | case R_PPC64_GOT_TLSLD16_HA: | |
12952 | case R_PPC64_GOT_TLSGD16_HA: | |
12953 | case R_PPC64_GOT_TPREL16_HA: | |
12954 | case R_PPC64_GOT_DTPREL16_HA: | |
12955 | case R_PPC64_GOT16_HA: | |
12956 | case R_PPC64_TOC16_HA: | |
d983b7a0 | 12957 | /* nop is done later. */ |
67f0cbdb AM |
12958 | break; |
12959 | ||
12960 | case R_PPC64_GOT_TLSLD16_LO: | |
12961 | case R_PPC64_GOT_TLSGD16_LO: | |
12962 | case R_PPC64_GOT_TPREL16_LO_DS: | |
12963 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
12964 | case R_PPC64_GOT16_LO: | |
12965 | case R_PPC64_GOT16_LO_DS: | |
12966 | case R_PPC64_TOC16_LO: | |
12967 | case R_PPC64_TOC16_LO_DS: | |
12968 | if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000) | |
12969 | { | |
12970 | bfd_byte *p = contents + (rel->r_offset & ~3); | |
12971 | insn = bfd_get_32 (input_bfd, p); | |
12972 | if ((insn & (0x3f << 26)) == 14u << 26 /* addi */ | |
12973 | || (insn & (0x3f << 26)) == 32u << 26 /* lwz */ | |
12974 | || (insn & (0x3f << 26)) == 34u << 26 /* lbz */ | |
12975 | || (insn & (0x3f << 26)) == 36u << 26 /* stw */ | |
12976 | || (insn & (0x3f << 26)) == 38u << 26 /* stb */ | |
12977 | || (insn & (0x3f << 26)) == 40u << 26 /* lhz */ | |
12978 | || (insn & (0x3f << 26)) == 42u << 26 /* lha */ | |
12979 | || (insn & (0x3f << 26)) == 44u << 26 /* sth */ | |
12980 | || (insn & (0x3f << 26)) == 46u << 26 /* lmw */ | |
12981 | || (insn & (0x3f << 26)) == 47u << 26 /* stmw */ | |
12982 | || (insn & (0x3f << 26)) == 48u << 26 /* lfs */ | |
12983 | || (insn & (0x3f << 26)) == 50u << 26 /* lfd */ | |
12984 | || (insn & (0x3f << 26)) == 52u << 26 /* stfs */ | |
12985 | || (insn & (0x3f << 26)) == 54u << 26 /* stfd */ | |
12986 | || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */ | |
12987 | && (insn & 3) != 1) | |
12988 | || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */ | |
12989 | && ((insn & 3) == 0 || (insn & 3) == 3))) | |
12990 | { | |
12991 | unsigned int reg = (insn >> 16) & 0x1f; | |
d983b7a0 AM |
12992 | const Elf_Internal_Rela *ha; |
12993 | bfd_boolean match_addend; | |
12994 | ||
12995 | match_addend = (sym != NULL | |
12996 | && ELF_ST_TYPE (sym->st_info) == STT_SECTION); | |
12997 | ha = ha_reloc_match (relocs, rel, ®, match_addend, | |
12998 | input_bfd, contents); | |
12999 | if (ha != NULL) | |
67f0cbdb AM |
13000 | { |
13001 | insn &= ~(0x1f << 16); | |
d983b7a0 | 13002 | insn |= reg << 16; |
67f0cbdb | 13003 | bfd_put_32 (input_bfd, insn, p); |
d983b7a0 AM |
13004 | if (ha_opt == NULL) |
13005 | { | |
13006 | ha_opt = bfd_zmalloc (input_section->reloc_count); | |
13007 | if (ha_opt == NULL) | |
13008 | return FALSE; | |
13009 | } | |
13010 | ha_opt[ha - relocs] = 1; | |
67f0cbdb | 13011 | } |
d983b7a0 AM |
13012 | else |
13013 | /* If we don't find a matching high part insn, | |
13014 | something is fishy. Refuse to nop any high | |
13015 | part insn in this section. */ | |
13016 | no_ha_opt = TRUE; | |
67f0cbdb AM |
13017 | } |
13018 | } | |
13019 | break; | |
13020 | } | |
13021 | ||
65f38f15 AM |
13022 | /* Do any further special processing. */ |
13023 | switch (r_type) | |
13024 | { | |
13025 | default: | |
13026 | break; | |
13027 | ||
13028 | case R_PPC64_ADDR16_HA: | |
25f23106 | 13029 | case R_PPC64_REL16_HA: |
65f38f15 AM |
13030 | case R_PPC64_ADDR16_HIGHERA: |
13031 | case R_PPC64_ADDR16_HIGHESTA: | |
65f38f15 AM |
13032 | case R_PPC64_TOC16_HA: |
13033 | case R_PPC64_SECTOFF_HA: | |
411e1bfb AM |
13034 | case R_PPC64_TPREL16_HA: |
13035 | case R_PPC64_DTPREL16_HA: | |
411e1bfb AM |
13036 | case R_PPC64_TPREL16_HIGHER: |
13037 | case R_PPC64_TPREL16_HIGHERA: | |
13038 | case R_PPC64_TPREL16_HIGHEST: | |
13039 | case R_PPC64_TPREL16_HIGHESTA: | |
13040 | case R_PPC64_DTPREL16_HIGHER: | |
13041 | case R_PPC64_DTPREL16_HIGHERA: | |
13042 | case R_PPC64_DTPREL16_HIGHEST: | |
13043 | case R_PPC64_DTPREL16_HIGHESTA: | |
65f38f15 AM |
13044 | /* It's just possible that this symbol is a weak symbol |
13045 | that's not actually defined anywhere. In that case, | |
13046 | 'sec' would be NULL, and we should leave the symbol | |
13047 | alone (it will be set to zero elsewhere in the link). */ | |
5c5f6e17 AM |
13048 | if (sec == NULL) |
13049 | break; | |
13050 | /* Fall thru */ | |
13051 | ||
13052 | case R_PPC64_GOT16_HA: | |
13053 | case R_PPC64_PLTGOT16_HA: | |
13054 | case R_PPC64_PLT16_HA: | |
13055 | case R_PPC64_GOT_TLSGD16_HA: | |
13056 | case R_PPC64_GOT_TLSLD16_HA: | |
13057 | case R_PPC64_GOT_TPREL16_HA: | |
13058 | case R_PPC64_GOT_DTPREL16_HA: | |
13059 | /* Add 0x10000 if sign bit in 0:15 is set. | |
13060 | Bits 0:15 are not used. */ | |
13061 | addend += 0x8000; | |
65f38f15 AM |
13062 | break; |
13063 | ||
13064 | case R_PPC64_ADDR16_DS: | |
13065 | case R_PPC64_ADDR16_LO_DS: | |
13066 | case R_PPC64_GOT16_DS: | |
13067 | case R_PPC64_GOT16_LO_DS: | |
13068 | case R_PPC64_PLT16_LO_DS: | |
13069 | case R_PPC64_SECTOFF_DS: | |
13070 | case R_PPC64_SECTOFF_LO_DS: | |
13071 | case R_PPC64_TOC16_DS: | |
13072 | case R_PPC64_TOC16_LO_DS: | |
13073 | case R_PPC64_PLTGOT16_DS: | |
13074 | case R_PPC64_PLTGOT16_LO_DS: | |
411e1bfb AM |
13075 | case R_PPC64_GOT_TPREL16_DS: |
13076 | case R_PPC64_GOT_TPREL16_LO_DS: | |
13077 | case R_PPC64_GOT_DTPREL16_DS: | |
13078 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
13079 | case R_PPC64_TPREL16_DS: | |
13080 | case R_PPC64_TPREL16_LO_DS: | |
13081 | case R_PPC64_DTPREL16_DS: | |
13082 | case R_PPC64_DTPREL16_LO_DS: | |
adadcc0c AM |
13083 | insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3)); |
13084 | mask = 3; | |
13085 | /* If this reloc is against an lq insn, then the value must be | |
13086 | a multiple of 16. This is somewhat of a hack, but the | |
13087 | "correct" way to do this by defining _DQ forms of all the | |
13088 | _DS relocs bloats all reloc switches in this file. It | |
13089 | doesn't seem to make much sense to use any of these relocs | |
13090 | in data, so testing the insn should be safe. */ | |
494dac0c | 13091 | if ((insn & (0x3f << 26)) == (56u << 26)) |
adadcc0c AM |
13092 | mask = 15; |
13093 | if (((relocation + addend) & mask) != 0) | |
65f38f15 AM |
13094 | { |
13095 | (*_bfd_error_handler) | |
d003868e AM |
13096 | (_("%B: error: relocation %s not a multiple of %d"), |
13097 | input_bfd, | |
4ce794b7 | 13098 | ppc64_elf_howto_table[r_type]->name, |
adadcc0c | 13099 | mask + 1); |
65f38f15 | 13100 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 13101 | ret = FALSE; |
65f38f15 AM |
13102 | continue; |
13103 | } | |
13104 | break; | |
5bd4f169 AM |
13105 | } |
13106 | ||
239e1f3a AM |
13107 | /* Dynamic relocs are not propagated for SEC_DEBUGGING sections |
13108 | because such sections are not SEC_ALLOC and thus ld.so will | |
13109 | not process them. */ | |
65f38f15 | 13110 | if (unresolved_reloc |
239e1f3a | 13111 | && !((input_section->flags & SEC_DEBUGGING) != 0 |
f5385ebf | 13112 | && h->elf.def_dynamic)) |
9c07fe7c AM |
13113 | { |
13114 | (*_bfd_error_handler) | |
d003868e AM |
13115 | (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"), |
13116 | input_bfd, | |
13117 | input_section, | |
9c07fe7c | 13118 | (long) rel->r_offset, |
7b609f53 | 13119 | ppc64_elf_howto_table[(int) r_type]->name, |
039b3fef | 13120 | h->elf.root.root.string); |
b34976b6 | 13121 | ret = FALSE; |
9c07fe7c | 13122 | } |
5bd4f169 | 13123 | |
65f38f15 | 13124 | r = _bfd_final_link_relocate (ppc64_elf_howto_table[(int) r_type], |
5bd4f169 AM |
13125 | input_bfd, |
13126 | input_section, | |
13127 | contents, | |
411e1bfb | 13128 | rel->r_offset, |
5bd4f169 AM |
13129 | relocation, |
13130 | addend); | |
13131 | ||
ef60b7ff | 13132 | if (r != bfd_reloc_ok) |
5bd4f169 | 13133 | { |
cd27b276 AM |
13134 | if (sym_name == NULL) |
13135 | sym_name = "(null)"; | |
13136 | if (r == bfd_reloc_overflow) | |
5bd4f169 | 13137 | { |
cd27b276 AM |
13138 | if (warned) |
13139 | continue; | |
13140 | if (h != NULL | |
039b3fef | 13141 | && h->elf.root.type == bfd_link_hash_undefweak |
4ce794b7 | 13142 | && ppc64_elf_howto_table[r_type]->pc_relative) |
5bd4f169 AM |
13143 | { |
13144 | /* Assume this is a call protected by other code that | |
13145 | detects the symbol is undefined. If this is the case, | |
13146 | we can safely ignore the overflow. If not, the | |
13147 | program is hosed anyway, and a little warning isn't | |
13148 | going to help. */ | |
13149 | ||
13150 | continue; | |
13151 | } | |
13152 | ||
ef60b7ff | 13153 | if (!((*info->callbacks->reloc_overflow) |
dfeffb9f L |
13154 | (info, (h ? &h->elf.root : NULL), sym_name, |
13155 | ppc64_elf_howto_table[r_type]->name, | |
4cc603a5 | 13156 | orig_addend, input_bfd, input_section, rel->r_offset))) |
b34976b6 | 13157 | return FALSE; |
ef60b7ff AM |
13158 | } |
13159 | else | |
13160 | { | |
13161 | (*_bfd_error_handler) | |
d003868e AM |
13162 | (_("%B(%A+0x%lx): %s reloc against `%s': error %d"), |
13163 | input_bfd, | |
13164 | input_section, | |
7b609f53 | 13165 | (long) rel->r_offset, |
4ce794b7 | 13166 | ppc64_elf_howto_table[r_type]->name, |
7b609f53 AM |
13167 | sym_name, |
13168 | (int) r); | |
b34976b6 | 13169 | ret = FALSE; |
ef60b7ff | 13170 | } |
5bd4f169 | 13171 | } |
5bd4f169 AM |
13172 | } |
13173 | ||
d983b7a0 AM |
13174 | if (ha_opt != NULL) |
13175 | { | |
13176 | if (!no_ha_opt) | |
13177 | { | |
13178 | unsigned char *opt = ha_opt; | |
13179 | rel = relocs; | |
13180 | relend = relocs + input_section->reloc_count; | |
13181 | for (; rel < relend; opt++, rel++) | |
13182 | if (*opt != 0) | |
13183 | { | |
13184 | bfd_byte *p = contents + (rel->r_offset & ~3); | |
13185 | bfd_put_32 (input_bfd, NOP, p); | |
13186 | } | |
13187 | } | |
13188 | free (ha_opt); | |
13189 | } | |
13190 | ||
645ea6a9 AM |
13191 | /* If we're emitting relocations, then shortly after this function |
13192 | returns, reloc offsets and addends for this section will be | |
13193 | adjusted. Worse, reloc symbol indices will be for the output | |
8860955f AM |
13194 | file rather than the input. Save a copy of the relocs for |
13195 | opd_entry_value. */ | |
4cc603a5 | 13196 | if (is_opd && (info->emitrelocations || info->relocatable)) |
8860955f AM |
13197 | { |
13198 | bfd_size_type amt; | |
13199 | amt = input_section->reloc_count * sizeof (Elf_Internal_Rela); | |
13200 | rel = bfd_alloc (input_bfd, amt); | |
13201 | BFD_ASSERT (ppc64_elf_tdata (input_bfd)->opd_relocs == NULL); | |
13202 | ppc64_elf_tdata (input_bfd)->opd_relocs = rel; | |
13203 | if (rel == NULL) | |
13204 | return FALSE; | |
13205 | memcpy (rel, relocs, amt); | |
13206 | } | |
5bd4f169 AM |
13207 | return ret; |
13208 | } | |
13209 | ||
754021d0 AM |
13210 | /* Adjust the value of any local symbols in opd sections. */ |
13211 | ||
6e0b88f1 | 13212 | static int |
754021d0 AM |
13213 | ppc64_elf_output_symbol_hook (struct bfd_link_info *info, |
13214 | const char *name ATTRIBUTE_UNUSED, | |
13215 | Elf_Internal_Sym *elfsym, | |
13216 | asection *input_sec, | |
13217 | struct elf_link_hash_entry *h) | |
13218 | { | |
74f0fb50 AM |
13219 | struct _opd_sec_data *opd; |
13220 | long adjust; | |
754021d0 AM |
13221 | bfd_vma value; |
13222 | ||
4025353c | 13223 | if (h != NULL) |
6e0b88f1 | 13224 | return 1; |
4025353c | 13225 | |
74f0fb50 AM |
13226 | opd = get_opd_info (input_sec); |
13227 | if (opd == NULL || opd->adjust == NULL) | |
6e0b88f1 | 13228 | return 1; |
754021d0 AM |
13229 | |
13230 | value = elfsym->st_value - input_sec->output_offset; | |
13231 | if (!info->relocatable) | |
13232 | value -= input_sec->output_section->vma; | |
13233 | ||
74f0fb50 | 13234 | adjust = opd->adjust[value / 8]; |
4025353c | 13235 | if (adjust == -1) |
6e0b88f1 AM |
13236 | return 2; |
13237 | ||
13238 | elfsym->st_value += adjust; | |
13239 | return 1; | |
754021d0 AM |
13240 | } |
13241 | ||
5bd4f169 AM |
13242 | /* Finish up dynamic symbol handling. We set the contents of various |
13243 | dynamic sections here. */ | |
13244 | ||
b34976b6 | 13245 | static bfd_boolean |
4ce794b7 AM |
13246 | ppc64_elf_finish_dynamic_symbol (bfd *output_bfd, |
13247 | struct bfd_link_info *info, | |
13248 | struct elf_link_hash_entry *h, | |
13249 | Elf_Internal_Sym *sym) | |
5bd4f169 | 13250 | { |
65f38f15 | 13251 | struct ppc_link_hash_table *htab; |
8387904d AM |
13252 | struct plt_entry *ent; |
13253 | Elf_Internal_Rela rela; | |
13254 | bfd_byte *loc; | |
5bd4f169 | 13255 | |
65f38f15 | 13256 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
13257 | if (htab == NULL) |
13258 | return FALSE; | |
5bd4f169 | 13259 | |
8387904d AM |
13260 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) |
13261 | if (ent->plt.offset != (bfd_vma) -1) | |
13262 | { | |
13263 | /* This symbol has an entry in the procedure linkage | |
13264 | table. Set it up. */ | |
e054468f AM |
13265 | if (!htab->elf.dynamic_sections_created |
13266 | || h->dynindx == -1) | |
13267 | { | |
13268 | BFD_ASSERT (h->type == STT_GNU_IFUNC | |
13269 | && h->def_regular | |
13270 | && (h->root.type == bfd_link_hash_defined | |
13271 | || h->root.type == bfd_link_hash_defweak)); | |
25f23106 AM |
13272 | rela.r_offset = (htab->iplt->output_section->vma |
13273 | + htab->iplt->output_offset | |
13274 | + ent->plt.offset); | |
13275 | rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL); | |
e054468f AM |
13276 | rela.r_addend = (h->root.u.def.value |
13277 | + h->root.u.def.section->output_offset | |
13278 | + h->root.u.def.section->output_section->vma | |
13279 | + ent->addend); | |
25f23106 AM |
13280 | loc = (htab->reliplt->contents |
13281 | + (htab->reliplt->reloc_count++ | |
13282 | * sizeof (Elf64_External_Rela))); | |
e054468f AM |
13283 | } |
13284 | else | |
13285 | { | |
25f23106 AM |
13286 | rela.r_offset = (htab->plt->output_section->vma |
13287 | + htab->plt->output_offset | |
13288 | + ent->plt.offset); | |
e054468f AM |
13289 | rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT); |
13290 | rela.r_addend = ent->addend; | |
25f23106 AM |
13291 | loc = (htab->relplt->contents |
13292 | + ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE) | |
13293 | / (PLT_ENTRY_SIZE / sizeof (Elf64_External_Rela)))); | |
e054468f | 13294 | } |
8387904d AM |
13295 | bfd_elf64_swap_reloca_out (output_bfd, &rela, loc); |
13296 | } | |
5bd4f169 | 13297 | |
f5385ebf | 13298 | if (h->needs_copy) |
5bd4f169 | 13299 | { |
65f38f15 | 13300 | /* This symbol needs a copy reloc. Set it up. */ |
5bd4f169 | 13301 | |
65f38f15 AM |
13302 | if (h->dynindx == -1 |
13303 | || (h->root.type != bfd_link_hash_defined | |
13304 | && h->root.type != bfd_link_hash_defweak) | |
4ce794b7 | 13305 | || htab->relbss == NULL) |
65f38f15 | 13306 | abort (); |
5bd4f169 AM |
13307 | |
13308 | rela.r_offset = (h->root.u.def.value | |
13309 | + h->root.u.def.section->output_section->vma | |
13310 | + h->root.u.def.section->output_offset); | |
13311 | rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY); | |
13312 | rela.r_addend = 0; | |
4ce794b7 AM |
13313 | loc = htab->relbss->contents; |
13314 | loc += htab->relbss->reloc_count++ * sizeof (Elf64_External_Rela); | |
65f38f15 | 13315 | bfd_elf64_swap_reloca_out (output_bfd, &rela, loc); |
5bd4f169 AM |
13316 | } |
13317 | ||
5bd4f169 AM |
13318 | /* Mark some specially defined symbols as absolute. */ |
13319 | if (strcmp (h->root.root.string, "_DYNAMIC") == 0) | |
13320 | sym->st_shndx = SHN_ABS; | |
13321 | ||
b34976b6 | 13322 | return TRUE; |
5bd4f169 AM |
13323 | } |
13324 | ||
65f38f15 AM |
13325 | /* Used to decide how to sort relocs in an optimal manner for the |
13326 | dynamic linker, before writing them out. */ | |
13327 | ||
13328 | static enum elf_reloc_type_class | |
4ce794b7 | 13329 | ppc64_elf_reloc_type_class (const Elf_Internal_Rela *rela) |
65f38f15 | 13330 | { |
04c9666a | 13331 | enum elf_ppc64_reloc_type r_type; |
a33d1f77 | 13332 | |
4ce794b7 | 13333 | r_type = ELF64_R_TYPE (rela->r_info); |
a33d1f77 | 13334 | switch (r_type) |
65f38f15 AM |
13335 | { |
13336 | case R_PPC64_RELATIVE: | |
13337 | return reloc_class_relative; | |
13338 | case R_PPC64_JMP_SLOT: | |
13339 | return reloc_class_plt; | |
13340 | case R_PPC64_COPY: | |
13341 | return reloc_class_copy; | |
13342 | default: | |
13343 | return reloc_class_normal; | |
13344 | } | |
13345 | } | |
13346 | ||
5bd4f169 AM |
13347 | /* Finish up the dynamic sections. */ |
13348 | ||
b34976b6 | 13349 | static bfd_boolean |
4ce794b7 AM |
13350 | ppc64_elf_finish_dynamic_sections (bfd *output_bfd, |
13351 | struct bfd_link_info *info) | |
5bd4f169 | 13352 | { |
65f38f15 AM |
13353 | struct ppc_link_hash_table *htab; |
13354 | bfd *dynobj; | |
5bd4f169 | 13355 | asection *sdyn; |
5bd4f169 | 13356 | |
65f38f15 | 13357 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
13358 | if (htab == NULL) |
13359 | return FALSE; | |
13360 | ||
65f38f15 | 13361 | dynobj = htab->elf.dynobj; |
5bd4f169 AM |
13362 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); |
13363 | ||
65f38f15 | 13364 | if (htab->elf.dynamic_sections_created) |
5bd4f169 | 13365 | { |
5bd4f169 AM |
13366 | Elf64_External_Dyn *dyncon, *dynconend; |
13367 | ||
4ce794b7 | 13368 | if (sdyn == NULL || htab->got == NULL) |
65f38f15 | 13369 | abort (); |
5bd4f169 AM |
13370 | |
13371 | dyncon = (Elf64_External_Dyn *) sdyn->contents; | |
eea6121a | 13372 | dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size); |
5bd4f169 AM |
13373 | for (; dyncon < dynconend; dyncon++) |
13374 | { | |
13375 | Elf_Internal_Dyn dyn; | |
19397422 | 13376 | asection *s; |
5bd4f169 AM |
13377 | |
13378 | bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn); | |
13379 | ||
13380 | switch (dyn.d_tag) | |
13381 | { | |
65f38f15 AM |
13382 | default: |
13383 | continue; | |
5bd4f169 | 13384 | |
5d1634d7 | 13385 | case DT_PPC64_GLINK: |
4ce794b7 | 13386 | s = htab->glink; |
6348e046 | 13387 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
ad8e1ba5 AM |
13388 | /* We stupidly defined DT_PPC64_GLINK to be the start |
13389 | of glink rather than the first entry point, which is | |
13390 | what ld.so needs, and now have a bigger stub to | |
13391 | support automatic multiple TOCs. */ | |
13392 | dyn.d_un.d_ptr += GLINK_CALL_STUB_SIZE - 32; | |
5d1634d7 AM |
13393 | break; |
13394 | ||
19397422 AM |
13395 | case DT_PPC64_OPD: |
13396 | s = bfd_get_section_by_name (output_bfd, ".opd"); | |
6348e046 AM |
13397 | if (s == NULL) |
13398 | continue; | |
13399 | dyn.d_un.d_ptr = s->vma; | |
19397422 AM |
13400 | break; |
13401 | ||
13402 | case DT_PPC64_OPDSZ: | |
13403 | s = bfd_get_section_by_name (output_bfd, ".opd"); | |
6348e046 AM |
13404 | if (s == NULL) |
13405 | continue; | |
eea6121a | 13406 | dyn.d_un.d_val = s->size; |
19397422 AM |
13407 | break; |
13408 | ||
65f38f15 | 13409 | case DT_PLTGOT: |
4ce794b7 | 13410 | s = htab->plt; |
6348e046 | 13411 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
65f38f15 AM |
13412 | break; |
13413 | ||
13414 | case DT_JMPREL: | |
4ce794b7 | 13415 | s = htab->relplt; |
6348e046 | 13416 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
65f38f15 | 13417 | break; |
5bd4f169 | 13418 | |
65f38f15 | 13419 | case DT_PLTRELSZ: |
eea6121a | 13420 | dyn.d_un.d_val = htab->relplt->size; |
5d1634d7 AM |
13421 | break; |
13422 | ||
13423 | case DT_RELASZ: | |
13424 | /* Don't count procedure linkage table relocs in the | |
13425 | overall reloc count. */ | |
4ce794b7 | 13426 | s = htab->relplt; |
6348e046 AM |
13427 | if (s == NULL) |
13428 | continue; | |
eea6121a | 13429 | dyn.d_un.d_val -= s->size; |
6348e046 AM |
13430 | break; |
13431 | ||
13432 | case DT_RELA: | |
13433 | /* We may not be using the standard ELF linker script. | |
13434 | If .rela.plt is the first .rela section, we adjust | |
13435 | DT_RELA to not include it. */ | |
4ce794b7 | 13436 | s = htab->relplt; |
6348e046 AM |
13437 | if (s == NULL) |
13438 | continue; | |
13439 | if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset) | |
13440 | continue; | |
eea6121a | 13441 | dyn.d_un.d_ptr += s->size; |
65f38f15 | 13442 | break; |
5bd4f169 | 13443 | } |
5bd4f169 | 13444 | |
65f38f15 | 13445 | bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); |
5bd4f169 | 13446 | } |
5bd4f169 AM |
13447 | } |
13448 | ||
eea6121a | 13449 | if (htab->got != NULL && htab->got->size != 0) |
5d1634d7 AM |
13450 | { |
13451 | /* Fill in the first entry in the global offset table. | |
13452 | We use it to hold the link-time TOCbase. */ | |
13453 | bfd_put_64 (output_bfd, | |
60ee0d4a | 13454 | elf_gp (output_bfd) + TOC_BASE_OFF, |
4ce794b7 | 13455 | htab->got->contents); |
5d1634d7 AM |
13456 | |
13457 | /* Set .got entry size. */ | |
4ce794b7 | 13458 | elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 8; |
5d1634d7 AM |
13459 | } |
13460 | ||
eea6121a | 13461 | if (htab->plt != NULL && htab->plt->size != 0) |
5d1634d7 AM |
13462 | { |
13463 | /* Set .plt entry size. */ | |
4ce794b7 | 13464 | elf_section_data (htab->plt->output_section)->this_hdr.sh_entsize |
5d1634d7 AM |
13465 | = PLT_ENTRY_SIZE; |
13466 | } | |
13467 | ||
84f5d08e AM |
13468 | /* brlt is SEC_LINKER_CREATED, so we need to write out relocs for |
13469 | brlt ourselves if emitrelocations. */ | |
13470 | if (htab->brlt != NULL | |
13471 | && htab->brlt->reloc_count != 0 | |
13472 | && !_bfd_elf_link_output_relocs (output_bfd, | |
13473 | htab->brlt, | |
d4730f92 | 13474 | elf_section_data (htab->brlt)->rela.hdr, |
84f5d08e AM |
13475 | elf_section_data (htab->brlt)->relocs, |
13476 | NULL)) | |
13477 | return FALSE; | |
13478 | ||
176a0d42 AM |
13479 | if (htab->glink != NULL |
13480 | && htab->glink->reloc_count != 0 | |
13481 | && !_bfd_elf_link_output_relocs (output_bfd, | |
13482 | htab->glink, | |
d4730f92 | 13483 | elf_section_data (htab->glink)->rela.hdr, |
176a0d42 AM |
13484 | elf_section_data (htab->glink)->relocs, |
13485 | NULL)) | |
13486 | return FALSE; | |
13487 | ||
e717da7e | 13488 | /* We need to handle writing out multiple GOT sections ourselves, |
7b53ace3 AM |
13489 | since we didn't add them to DYNOBJ. We know dynobj is the first |
13490 | bfd. */ | |
e717da7e AM |
13491 | while ((dynobj = dynobj->link_next) != NULL) |
13492 | { | |
13493 | asection *s; | |
7b53ace3 | 13494 | |
0c8d6e5c | 13495 | if (!is_ppc64_elf (dynobj)) |
7b53ace3 AM |
13496 | continue; |
13497 | ||
e717da7e AM |
13498 | s = ppc64_elf_tdata (dynobj)->got; |
13499 | if (s != NULL | |
eea6121a | 13500 | && s->size != 0 |
e717da7e AM |
13501 | && s->output_section != bfd_abs_section_ptr |
13502 | && !bfd_set_section_contents (output_bfd, s->output_section, | |
13503 | s->contents, s->output_offset, | |
eea6121a | 13504 | s->size)) |
e717da7e AM |
13505 | return FALSE; |
13506 | s = ppc64_elf_tdata (dynobj)->relgot; | |
13507 | if (s != NULL | |
eea6121a | 13508 | && s->size != 0 |
e717da7e AM |
13509 | && s->output_section != bfd_abs_section_ptr |
13510 | && !bfd_set_section_contents (output_bfd, s->output_section, | |
13511 | s->contents, s->output_offset, | |
eea6121a | 13512 | s->size)) |
e717da7e AM |
13513 | return FALSE; |
13514 | } | |
f6c52c13 | 13515 | |
b34976b6 | 13516 | return TRUE; |
5bd4f169 AM |
13517 | } |
13518 | ||
5bd4f169 | 13519 | #include "elf64-target.h" |