Commit | Line | Data |
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5bd4f169 | 1 | /* PowerPC64-specific support for 64-bit ELF. |
b2a8e766 AM |
2 | Copyright 1999, 2000, 2001, 2002, 2003, 2004 |
3 | 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. | |
d37c89e5 | 6 | Largely rewritten by Alan Modra <amodra@bigpond.net.au> |
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 | |
12 | the Free Software Foundation; either version 2 of the License, or | |
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., | |
22 | 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ | |
5bd4f169 | 23 | |
4ce794b7 AM |
24 | /* The 64-bit PowerPC ELF ABI may be found at |
25 | http://www.linuxbase.org/spec/ELF/ppc64/PPC-elf64abi.txt, and | |
26 | http://www.linuxbase.org/spec/ELF/ppc64/spec/book1.html */ | |
5bd4f169 AM |
27 | |
28 | #include "bfd.h" | |
29 | #include "sysdep.h" | |
30 | #include "bfdlink.h" | |
31 | #include "libbfd.h" | |
32 | #include "elf-bfd.h" | |
04c9666a | 33 | #include "elf/ppc64.h" |
5d1634d7 | 34 | #include "elf64-ppc.h" |
5bd4f169 | 35 | |
805fc799 | 36 | static bfd_reloc_status_type ppc64_elf_ha_reloc |
4ce794b7 | 37 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
805fc799 | 38 | static bfd_reloc_status_type ppc64_elf_brtaken_reloc |
4ce794b7 | 39 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
805fc799 | 40 | static bfd_reloc_status_type ppc64_elf_sectoff_reloc |
4ce794b7 | 41 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
805fc799 | 42 | static bfd_reloc_status_type ppc64_elf_sectoff_ha_reloc |
4ce794b7 | 43 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
805fc799 | 44 | static bfd_reloc_status_type ppc64_elf_toc_reloc |
4ce794b7 | 45 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
805fc799 | 46 | static bfd_reloc_status_type ppc64_elf_toc_ha_reloc |
4ce794b7 | 47 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
805fc799 | 48 | static bfd_reloc_status_type ppc64_elf_toc64_reloc |
4ce794b7 | 49 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
805fc799 | 50 | static bfd_reloc_status_type ppc64_elf_unhandled_reloc |
4ce794b7 | 51 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
5bd4f169 AM |
52 | |
53 | ||
ad8e1ba5 AM |
54 | #define TARGET_LITTLE_SYM bfd_elf64_powerpcle_vec |
55 | #define TARGET_LITTLE_NAME "elf64-powerpcle" | |
56 | #define TARGET_BIG_SYM bfd_elf64_powerpc_vec | |
57 | #define TARGET_BIG_NAME "elf64-powerpc" | |
58 | #define ELF_ARCH bfd_arch_powerpc | |
59 | #define ELF_MACHINE_CODE EM_PPC64 | |
60 | #define ELF_MAXPAGESIZE 0x10000 | |
61 | #define elf_info_to_howto ppc64_elf_info_to_howto | |
62 | ||
63 | #define elf_backend_want_got_sym 0 | |
64 | #define elf_backend_want_plt_sym 0 | |
65 | #define elf_backend_plt_alignment 3 | |
66 | #define elf_backend_plt_not_loaded 1 | |
67 | #define elf_backend_got_symbol_offset 0 | |
68 | #define elf_backend_got_header_size 8 | |
ad8e1ba5 AM |
69 | #define elf_backend_can_gc_sections 1 |
70 | #define elf_backend_can_refcount 1 | |
71 | #define elf_backend_rela_normal 1 | |
72 | ||
e717da7e | 73 | #define bfd_elf64_mkobject ppc64_elf_mkobject |
ad8e1ba5 AM |
74 | #define bfd_elf64_bfd_reloc_type_lookup ppc64_elf_reloc_type_lookup |
75 | #define bfd_elf64_bfd_merge_private_bfd_data ppc64_elf_merge_private_bfd_data | |
76 | #define bfd_elf64_new_section_hook ppc64_elf_new_section_hook | |
77 | #define bfd_elf64_bfd_link_hash_table_create ppc64_elf_link_hash_table_create | |
78 | #define bfd_elf64_bfd_link_hash_table_free ppc64_elf_link_hash_table_free | |
79 | ||
80 | #define elf_backend_object_p ppc64_elf_object_p | |
d37c89e5 AM |
81 | #define elf_backend_grok_prstatus ppc64_elf_grok_prstatus |
82 | #define elf_backend_grok_psinfo ppc64_elf_grok_psinfo | |
ad8e1ba5 AM |
83 | #define elf_backend_create_dynamic_sections ppc64_elf_create_dynamic_sections |
84 | #define elf_backend_copy_indirect_symbol ppc64_elf_copy_indirect_symbol | |
555cd476 | 85 | #define elf_backend_add_symbol_hook ppc64_elf_add_symbol_hook |
ad8e1ba5 AM |
86 | #define elf_backend_check_relocs ppc64_elf_check_relocs |
87 | #define elf_backend_gc_mark_hook ppc64_elf_gc_mark_hook | |
88 | #define elf_backend_gc_sweep_hook ppc64_elf_gc_sweep_hook | |
89 | #define elf_backend_adjust_dynamic_symbol ppc64_elf_adjust_dynamic_symbol | |
90 | #define elf_backend_hide_symbol ppc64_elf_hide_symbol | |
91 | #define elf_backend_always_size_sections ppc64_elf_func_desc_adjust | |
92 | #define elf_backend_size_dynamic_sections ppc64_elf_size_dynamic_sections | |
93 | #define elf_backend_relocate_section ppc64_elf_relocate_section | |
94 | #define elf_backend_finish_dynamic_symbol ppc64_elf_finish_dynamic_symbol | |
95 | #define elf_backend_reloc_type_class ppc64_elf_reloc_type_class | |
96 | #define elf_backend_finish_dynamic_sections ppc64_elf_finish_dynamic_sections | |
754021d0 | 97 | #define elf_backend_link_output_symbol_hook ppc64_elf_output_symbol_hook |
2f89ff8d | 98 | #define elf_backend_special_sections ppc64_elf_special_sections |
ad8e1ba5 | 99 | |
5bd4f169 AM |
100 | /* The name of the dynamic interpreter. This is put in the .interp |
101 | section. */ | |
102 | #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1" | |
103 | ||
104 | /* The size in bytes of an entry in the procedure linkage table. */ | |
105 | #define PLT_ENTRY_SIZE 24 | |
106 | ||
107 | /* The initial size of the plt reserved for the dynamic linker. */ | |
5d1634d7 | 108 | #define PLT_INITIAL_ENTRY_SIZE PLT_ENTRY_SIZE |
5bd4f169 AM |
109 | |
110 | /* TOC base pointers offset from start of TOC. */ | |
411e1bfb AM |
111 | #define TOC_BASE_OFF 0x8000 |
112 | ||
113 | /* Offset of tp and dtp pointers from start of TLS block. */ | |
114 | #define TP_OFFSET 0x7000 | |
115 | #define DTP_OFFSET 0x8000 | |
5bd4f169 | 116 | |
ad8e1ba5 AM |
117 | /* .plt call stub instructions. The normal stub is like this, but |
118 | sometimes the .plt entry crosses a 64k boundary and we need to | |
119 | insert an addis to adjust r12. */ | |
120 | #define PLT_CALL_STUB_SIZE (7*4) | |
5d1634d7 AM |
121 | #define ADDIS_R12_R2 0x3d820000 /* addis %r12,%r2,xxx@ha */ |
122 | #define STD_R2_40R1 0xf8410028 /* std %r2,40(%r1) */ | |
123 | #define LD_R11_0R12 0xe96c0000 /* ld %r11,xxx+0@l(%r12) */ | |
124 | #define LD_R2_0R12 0xe84c0000 /* ld %r2,xxx+8@l(%r12) */ | |
125 | #define MTCTR_R11 0x7d6903a6 /* mtctr %r11 */ | |
126 | /* ld %r11,xxx+16@l(%r12) */ | |
127 | #define BCTR 0x4e800420 /* bctr */ | |
128 | ||
5d1634d7 | 129 | |
ad8e1ba5 AM |
130 | #define ADDIS_R2_R2 0x3c420000 /* addis %r2,%r2,off@ha */ |
131 | #define ADDI_R2_R2 0x38420000 /* addi %r2,%r2,off@l */ | |
132 | ||
133 | #define LD_R2_40R1 0xe8410028 /* ld %r2,40(%r1) */ | |
134 | ||
135 | /* glink call stub instructions. We enter with the index in R0, and the | |
136 | address of glink entry in CTR. From that, we can calculate PLT0. */ | |
137 | #define GLINK_CALL_STUB_SIZE (16*4) | |
138 | #define MFCTR_R12 0x7d8902a6 /* mfctr %r12 */ | |
139 | #define SLDI_R11_R0_3 0x780b1f24 /* sldi %r11,%r0,3 */ | |
140 | #define ADDIC_R2_R0_32K 0x34408000 /* addic. %r2,%r0,-32768 */ | |
141 | #define SUB_R12_R12_R11 0x7d8b6050 /* sub %r12,%r12,%r11 */ | |
142 | #define SRADI_R2_R2_63 0x7c42fe76 /* sradi %r2,%r2,63 */ | |
143 | #define SLDI_R11_R0_2 0x780b1764 /* sldi %r11,%r0,2 */ | |
144 | #define AND_R2_R2_R11 0x7c425838 /* and %r2,%r2,%r11 */ | |
145 | /* sub %r12,%r12,%r11 */ | |
146 | #define ADD_R12_R12_R2 0x7d8c1214 /* add %r12,%r12,%r2 */ | |
147 | #define ADDIS_R12_R12 0x3d8c0000 /* addis %r12,%r12,xxx@ha */ | |
148 | /* ld %r11,xxx@l(%r12) */ | |
149 | #define ADDI_R12_R12 0x398c0000 /* addi %r12,%r12,xxx@l */ | |
150 | /* ld %r2,8(%r12) */ | |
151 | /* mtctr %r11 */ | |
152 | /* ld %r11,16(%r12) */ | |
153 | /* bctr */ | |
5d1634d7 AM |
154 | |
155 | /* Pad with this. */ | |
156 | #define NOP 0x60000000 | |
157 | ||
721956f4 AM |
158 | /* Some other nops. */ |
159 | #define CROR_151515 0x4def7b82 | |
160 | #define CROR_313131 0x4ffffb82 | |
161 | ||
cedb70c5 | 162 | /* .glink entries for the first 32k functions are two instructions. */ |
5d1634d7 AM |
163 | #define LI_R0_0 0x38000000 /* li %r0,0 */ |
164 | #define B_DOT 0x48000000 /* b . */ | |
165 | ||
166 | /* After that, we need two instructions to load the index, followed by | |
167 | a branch. */ | |
168 | #define LIS_R0_0 0x3c000000 /* lis %r0,0 */ | |
10ed1bba | 169 | #define ORI_R0_R0_0 0x60000000 /* ori %r0,%r0,0 */ |
41bd81ab | 170 | |
82bd7b59 AM |
171 | /* Instructions to save and restore floating point regs. */ |
172 | #define STFD_FR0_0R1 0xd8010000 /* stfd %fr0,0(%r1) */ | |
173 | #define LFD_FR0_0R1 0xc8010000 /* lfd %fr0,0(%r1) */ | |
174 | #define BLR 0x4e800020 /* blr */ | |
175 | ||
41bd81ab AM |
176 | /* Since .opd is an array of descriptors and each entry will end up |
177 | with identical R_PPC64_RELATIVE relocs, there is really no need to | |
178 | propagate .opd relocs; The dynamic linker should be taught to | |
1e2f5b6e | 179 | relocate .opd without reloc entries. */ |
41bd81ab AM |
180 | #ifndef NO_OPD_RELOCS |
181 | #define NO_OPD_RELOCS 0 | |
182 | #endif | |
5bd4f169 | 183 | \f |
f5e87a1d | 184 | #define ONES(n) (((bfd_vma) 1 << ((n) - 1) << 1) - 1) |
b34976b6 | 185 | |
5bd4f169 | 186 | /* Relocation HOWTO's. */ |
04c9666a | 187 | static reloc_howto_type *ppc64_elf_howto_table[(int) R_PPC64_max]; |
5bd4f169 AM |
188 | |
189 | static reloc_howto_type ppc64_elf_howto_raw[] = { | |
190 | /* This reloc does nothing. */ | |
191 | HOWTO (R_PPC64_NONE, /* type */ | |
192 | 0, /* rightshift */ | |
411e1bfb AM |
193 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
194 | 32, /* bitsize */ | |
b34976b6 | 195 | FALSE, /* pc_relative */ |
5bd4f169 | 196 | 0, /* bitpos */ |
f5e87a1d | 197 | complain_overflow_dont, /* complain_on_overflow */ |
5bd4f169 AM |
198 | bfd_elf_generic_reloc, /* special_function */ |
199 | "R_PPC64_NONE", /* name */ | |
b34976b6 | 200 | FALSE, /* partial_inplace */ |
d006db6c | 201 | 0, /* src_mask */ |
5bd4f169 | 202 | 0, /* dst_mask */ |
b34976b6 | 203 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
204 | |
205 | /* A standard 32 bit relocation. */ | |
206 | HOWTO (R_PPC64_ADDR32, /* type */ | |
207 | 0, /* rightshift */ | |
208 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
209 | 32, /* bitsize */ | |
b34976b6 | 210 | FALSE, /* pc_relative */ |
5bd4f169 AM |
211 | 0, /* bitpos */ |
212 | complain_overflow_bitfield, /* complain_on_overflow */ | |
213 | bfd_elf_generic_reloc, /* special_function */ | |
214 | "R_PPC64_ADDR32", /* name */ | |
b34976b6 | 215 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
216 | 0, /* src_mask */ |
217 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 218 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
219 | |
220 | /* An absolute 26 bit branch; the lower two bits must be zero. | |
221 | FIXME: we don't check that, we just clear them. */ | |
222 | HOWTO (R_PPC64_ADDR24, /* type */ | |
223 | 0, /* rightshift */ | |
224 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
225 | 26, /* bitsize */ | |
b34976b6 | 226 | FALSE, /* pc_relative */ |
5bd4f169 AM |
227 | 0, /* bitpos */ |
228 | complain_overflow_bitfield, /* complain_on_overflow */ | |
229 | bfd_elf_generic_reloc, /* special_function */ | |
230 | "R_PPC64_ADDR24", /* name */ | |
b34976b6 | 231 | FALSE, /* partial_inplace */ |
d006db6c | 232 | 0, /* src_mask */ |
f5e87a1d | 233 | 0x03fffffc, /* dst_mask */ |
b34976b6 | 234 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
235 | |
236 | /* A standard 16 bit relocation. */ | |
237 | HOWTO (R_PPC64_ADDR16, /* type */ | |
238 | 0, /* rightshift */ | |
239 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
240 | 16, /* bitsize */ | |
b34976b6 | 241 | FALSE, /* pc_relative */ |
5bd4f169 AM |
242 | 0, /* bitpos */ |
243 | complain_overflow_bitfield, /* complain_on_overflow */ | |
244 | bfd_elf_generic_reloc, /* special_function */ | |
245 | "R_PPC64_ADDR16", /* name */ | |
b34976b6 | 246 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
247 | 0, /* src_mask */ |
248 | 0xffff, /* dst_mask */ | |
b34976b6 | 249 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
250 | |
251 | /* A 16 bit relocation without overflow. */ | |
252 | HOWTO (R_PPC64_ADDR16_LO, /* type */ | |
253 | 0, /* rightshift */ | |
254 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
255 | 16, /* bitsize */ | |
b34976b6 | 256 | FALSE, /* pc_relative */ |
5bd4f169 AM |
257 | 0, /* bitpos */ |
258 | complain_overflow_dont,/* complain_on_overflow */ | |
259 | bfd_elf_generic_reloc, /* special_function */ | |
260 | "R_PPC64_ADDR16_LO", /* name */ | |
b34976b6 | 261 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
262 | 0, /* src_mask */ |
263 | 0xffff, /* dst_mask */ | |
b34976b6 | 264 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
265 | |
266 | /* Bits 16-31 of an address. */ | |
267 | HOWTO (R_PPC64_ADDR16_HI, /* type */ | |
268 | 16, /* rightshift */ | |
269 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
270 | 16, /* bitsize */ | |
b34976b6 | 271 | FALSE, /* pc_relative */ |
5bd4f169 AM |
272 | 0, /* bitpos */ |
273 | complain_overflow_dont, /* complain_on_overflow */ | |
274 | bfd_elf_generic_reloc, /* special_function */ | |
275 | "R_PPC64_ADDR16_HI", /* name */ | |
b34976b6 | 276 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
277 | 0, /* src_mask */ |
278 | 0xffff, /* dst_mask */ | |
b34976b6 | 279 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
280 | |
281 | /* Bits 16-31 of an address, plus 1 if the contents of the low 16 | |
282 | bits, treated as a signed number, is negative. */ | |
283 | HOWTO (R_PPC64_ADDR16_HA, /* type */ | |
284 | 16, /* rightshift */ | |
285 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
286 | 16, /* bitsize */ | |
b34976b6 | 287 | FALSE, /* pc_relative */ |
5bd4f169 AM |
288 | 0, /* bitpos */ |
289 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 290 | ppc64_elf_ha_reloc, /* special_function */ |
5bd4f169 | 291 | "R_PPC64_ADDR16_HA", /* name */ |
b34976b6 | 292 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
293 | 0, /* src_mask */ |
294 | 0xffff, /* dst_mask */ | |
b34976b6 | 295 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
296 | |
297 | /* An absolute 16 bit branch; the lower two bits must be zero. | |
298 | FIXME: we don't check that, we just clear them. */ | |
299 | HOWTO (R_PPC64_ADDR14, /* type */ | |
300 | 0, /* rightshift */ | |
301 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
302 | 16, /* bitsize */ | |
b34976b6 | 303 | FALSE, /* pc_relative */ |
5bd4f169 AM |
304 | 0, /* bitpos */ |
305 | complain_overflow_bitfield, /* complain_on_overflow */ | |
306 | bfd_elf_generic_reloc, /* special_function */ | |
307 | "R_PPC64_ADDR14", /* name */ | |
b34976b6 | 308 | FALSE, /* partial_inplace */ |
d006db6c | 309 | 0, /* src_mask */ |
f5e87a1d | 310 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 311 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
312 | |
313 | /* An absolute 16 bit branch, for which bit 10 should be set to | |
314 | indicate that the branch is expected to be taken. The lower two | |
315 | bits must be zero. */ | |
316 | HOWTO (R_PPC64_ADDR14_BRTAKEN, /* type */ | |
317 | 0, /* rightshift */ | |
318 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
319 | 16, /* bitsize */ | |
b34976b6 | 320 | FALSE, /* pc_relative */ |
5bd4f169 AM |
321 | 0, /* bitpos */ |
322 | complain_overflow_bitfield, /* complain_on_overflow */ | |
805fc799 | 323 | ppc64_elf_brtaken_reloc, /* special_function */ |
5bd4f169 | 324 | "R_PPC64_ADDR14_BRTAKEN",/* name */ |
b34976b6 | 325 | FALSE, /* partial_inplace */ |
d006db6c | 326 | 0, /* src_mask */ |
f5e87a1d | 327 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 328 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
329 | |
330 | /* An absolute 16 bit branch, for which bit 10 should be set to | |
331 | indicate that the branch is not expected to be taken. The lower | |
332 | two bits must be zero. */ | |
333 | HOWTO (R_PPC64_ADDR14_BRNTAKEN, /* type */ | |
334 | 0, /* rightshift */ | |
335 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
336 | 16, /* bitsize */ | |
b34976b6 | 337 | FALSE, /* pc_relative */ |
5bd4f169 AM |
338 | 0, /* bitpos */ |
339 | complain_overflow_bitfield, /* complain_on_overflow */ | |
805fc799 | 340 | ppc64_elf_brtaken_reloc, /* special_function */ |
5bd4f169 | 341 | "R_PPC64_ADDR14_BRNTAKEN",/* name */ |
b34976b6 | 342 | FALSE, /* partial_inplace */ |
d006db6c | 343 | 0, /* src_mask */ |
f5e87a1d | 344 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 345 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
346 | |
347 | /* A relative 26 bit branch; the lower two bits must be zero. */ | |
348 | HOWTO (R_PPC64_REL24, /* type */ | |
349 | 0, /* rightshift */ | |
350 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
351 | 26, /* bitsize */ | |
b34976b6 | 352 | TRUE, /* pc_relative */ |
5bd4f169 AM |
353 | 0, /* bitpos */ |
354 | complain_overflow_signed, /* complain_on_overflow */ | |
355 | bfd_elf_generic_reloc, /* special_function */ | |
356 | "R_PPC64_REL24", /* name */ | |
b34976b6 | 357 | FALSE, /* partial_inplace */ |
d006db6c | 358 | 0, /* src_mask */ |
f5e87a1d | 359 | 0x03fffffc, /* dst_mask */ |
b34976b6 | 360 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
361 | |
362 | /* A relative 16 bit branch; the lower two bits must be zero. */ | |
363 | HOWTO (R_PPC64_REL14, /* type */ | |
364 | 0, /* rightshift */ | |
365 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
366 | 16, /* bitsize */ | |
b34976b6 | 367 | TRUE, /* pc_relative */ |
5bd4f169 AM |
368 | 0, /* bitpos */ |
369 | complain_overflow_signed, /* complain_on_overflow */ | |
370 | bfd_elf_generic_reloc, /* special_function */ | |
371 | "R_PPC64_REL14", /* name */ | |
b34976b6 | 372 | FALSE, /* partial_inplace */ |
d006db6c | 373 | 0, /* src_mask */ |
f5e87a1d | 374 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 375 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
376 | |
377 | /* A relative 16 bit branch. Bit 10 should be set to indicate that | |
378 | the branch is expected to be taken. The lower two bits must be | |
379 | zero. */ | |
380 | HOWTO (R_PPC64_REL14_BRTAKEN, /* type */ | |
381 | 0, /* rightshift */ | |
382 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
383 | 16, /* bitsize */ | |
b34976b6 | 384 | TRUE, /* pc_relative */ |
5bd4f169 AM |
385 | 0, /* bitpos */ |
386 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 387 | ppc64_elf_brtaken_reloc, /* special_function */ |
5bd4f169 | 388 | "R_PPC64_REL14_BRTAKEN", /* name */ |
b34976b6 | 389 | FALSE, /* partial_inplace */ |
d006db6c | 390 | 0, /* src_mask */ |
f5e87a1d | 391 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 392 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
393 | |
394 | /* A relative 16 bit branch. Bit 10 should be set to indicate that | |
395 | the branch is not expected to be taken. The lower two bits must | |
396 | be zero. */ | |
397 | HOWTO (R_PPC64_REL14_BRNTAKEN, /* type */ | |
398 | 0, /* rightshift */ | |
399 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
400 | 16, /* bitsize */ | |
b34976b6 | 401 | TRUE, /* pc_relative */ |
5bd4f169 AM |
402 | 0, /* bitpos */ |
403 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 404 | ppc64_elf_brtaken_reloc, /* special_function */ |
5bd4f169 | 405 | "R_PPC64_REL14_BRNTAKEN",/* name */ |
b34976b6 | 406 | FALSE, /* partial_inplace */ |
d006db6c | 407 | 0, /* src_mask */ |
f5e87a1d | 408 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 409 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
410 | |
411 | /* Like R_PPC64_ADDR16, but referring to the GOT table entry for the | |
412 | symbol. */ | |
413 | HOWTO (R_PPC64_GOT16, /* type */ | |
414 | 0, /* rightshift */ | |
415 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
416 | 16, /* bitsize */ | |
b34976b6 | 417 | FALSE, /* pc_relative */ |
5bd4f169 AM |
418 | 0, /* bitpos */ |
419 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 420 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 421 | "R_PPC64_GOT16", /* name */ |
b34976b6 | 422 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
423 | 0, /* src_mask */ |
424 | 0xffff, /* dst_mask */ | |
b34976b6 | 425 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
426 | |
427 | /* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for | |
428 | the symbol. */ | |
429 | HOWTO (R_PPC64_GOT16_LO, /* type */ | |
430 | 0, /* rightshift */ | |
431 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
432 | 16, /* bitsize */ | |
b34976b6 | 433 | FALSE, /* pc_relative */ |
5bd4f169 AM |
434 | 0, /* bitpos */ |
435 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 436 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 437 | "R_PPC64_GOT16_LO", /* name */ |
b34976b6 | 438 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
439 | 0, /* src_mask */ |
440 | 0xffff, /* dst_mask */ | |
b34976b6 | 441 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
442 | |
443 | /* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for | |
444 | the symbol. */ | |
445 | HOWTO (R_PPC64_GOT16_HI, /* type */ | |
446 | 16, /* rightshift */ | |
447 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
448 | 16, /* bitsize */ | |
b34976b6 | 449 | FALSE, /* pc_relative */ |
5bd4f169 AM |
450 | 0, /* bitpos */ |
451 | complain_overflow_dont,/* complain_on_overflow */ | |
805fc799 | 452 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 453 | "R_PPC64_GOT16_HI", /* name */ |
b34976b6 | 454 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
455 | 0, /* src_mask */ |
456 | 0xffff, /* dst_mask */ | |
b34976b6 | 457 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
458 | |
459 | /* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for | |
460 | the symbol. */ | |
461 | HOWTO (R_PPC64_GOT16_HA, /* type */ | |
462 | 16, /* rightshift */ | |
463 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
464 | 16, /* bitsize */ | |
b34976b6 | 465 | FALSE, /* pc_relative */ |
5bd4f169 AM |
466 | 0, /* bitpos */ |
467 | complain_overflow_dont,/* complain_on_overflow */ | |
805fc799 | 468 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 469 | "R_PPC64_GOT16_HA", /* name */ |
b34976b6 | 470 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
471 | 0, /* src_mask */ |
472 | 0xffff, /* dst_mask */ | |
b34976b6 | 473 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
474 | |
475 | /* This is used only by the dynamic linker. The symbol should exist | |
476 | both in the object being run and in some shared library. The | |
477 | dynamic linker copies the data addressed by the symbol from the | |
478 | shared library into the object, because the object being | |
479 | run has to have the data at some particular address. */ | |
480 | HOWTO (R_PPC64_COPY, /* type */ | |
481 | 0, /* rightshift */ | |
f5e87a1d AM |
482 | 0, /* this one is variable size */ |
483 | 0, /* bitsize */ | |
b34976b6 | 484 | FALSE, /* pc_relative */ |
5bd4f169 | 485 | 0, /* bitpos */ |
f5e87a1d AM |
486 | complain_overflow_dont, /* complain_on_overflow */ |
487 | ppc64_elf_unhandled_reloc, /* special_function */ | |
5bd4f169 | 488 | "R_PPC64_COPY", /* name */ |
b34976b6 | 489 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
490 | 0, /* src_mask */ |
491 | 0, /* dst_mask */ | |
b34976b6 | 492 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
493 | |
494 | /* Like R_PPC64_ADDR64, but used when setting global offset table | |
495 | entries. */ | |
496 | HOWTO (R_PPC64_GLOB_DAT, /* type */ | |
497 | 0, /* rightshift */ | |
498 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
499 | 64, /* bitsize */ | |
b34976b6 | 500 | FALSE, /* pc_relative */ |
5bd4f169 AM |
501 | 0, /* bitpos */ |
502 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 503 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 504 | "R_PPC64_GLOB_DAT", /* name */ |
b34976b6 | 505 | FALSE, /* partial_inplace */ |
5bd4f169 | 506 | 0, /* src_mask */ |
f5e87a1d | 507 | ONES (64), /* dst_mask */ |
b34976b6 | 508 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
509 | |
510 | /* Created by the link editor. Marks a procedure linkage table | |
511 | entry for a symbol. */ | |
512 | HOWTO (R_PPC64_JMP_SLOT, /* type */ | |
513 | 0, /* rightshift */ | |
514 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
515 | 0, /* bitsize */ | |
b34976b6 | 516 | FALSE, /* pc_relative */ |
5bd4f169 AM |
517 | 0, /* bitpos */ |
518 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 519 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 520 | "R_PPC64_JMP_SLOT", /* name */ |
b34976b6 | 521 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
522 | 0, /* src_mask */ |
523 | 0, /* dst_mask */ | |
b34976b6 | 524 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
525 | |
526 | /* Used only by the dynamic linker. When the object is run, this | |
527 | doubleword64 is set to the load address of the object, plus the | |
528 | addend. */ | |
529 | HOWTO (R_PPC64_RELATIVE, /* type */ | |
530 | 0, /* rightshift */ | |
531 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
532 | 64, /* bitsize */ | |
b34976b6 | 533 | FALSE, /* pc_relative */ |
5bd4f169 AM |
534 | 0, /* bitpos */ |
535 | complain_overflow_dont, /* complain_on_overflow */ | |
536 | bfd_elf_generic_reloc, /* special_function */ | |
537 | "R_PPC64_RELATIVE", /* name */ | |
b34976b6 | 538 | FALSE, /* partial_inplace */ |
5bd4f169 | 539 | 0, /* src_mask */ |
f5e87a1d | 540 | ONES (64), /* dst_mask */ |
b34976b6 | 541 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
542 | |
543 | /* Like R_PPC64_ADDR32, but may be unaligned. */ | |
544 | HOWTO (R_PPC64_UADDR32, /* type */ | |
545 | 0, /* rightshift */ | |
546 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
547 | 32, /* bitsize */ | |
b34976b6 | 548 | FALSE, /* pc_relative */ |
5bd4f169 AM |
549 | 0, /* bitpos */ |
550 | complain_overflow_bitfield, /* complain_on_overflow */ | |
551 | bfd_elf_generic_reloc, /* special_function */ | |
552 | "R_PPC64_UADDR32", /* name */ | |
b34976b6 | 553 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
554 | 0, /* src_mask */ |
555 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 556 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
557 | |
558 | /* Like R_PPC64_ADDR16, but may be unaligned. */ | |
559 | HOWTO (R_PPC64_UADDR16, /* type */ | |
560 | 0, /* rightshift */ | |
561 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
562 | 16, /* bitsize */ | |
b34976b6 | 563 | FALSE, /* pc_relative */ |
5bd4f169 AM |
564 | 0, /* bitpos */ |
565 | complain_overflow_bitfield, /* complain_on_overflow */ | |
566 | bfd_elf_generic_reloc, /* special_function */ | |
567 | "R_PPC64_UADDR16", /* name */ | |
b34976b6 | 568 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
569 | 0, /* src_mask */ |
570 | 0xffff, /* dst_mask */ | |
b34976b6 | 571 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
572 | |
573 | /* 32-bit PC relative. */ | |
574 | HOWTO (R_PPC64_REL32, /* type */ | |
575 | 0, /* rightshift */ | |
576 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
577 | 32, /* bitsize */ | |
b34976b6 | 578 | TRUE, /* pc_relative */ |
5bd4f169 | 579 | 0, /* bitpos */ |
cedb70c5 | 580 | /* FIXME: Verify. Was complain_overflow_bitfield. */ |
5bd4f169 AM |
581 | complain_overflow_signed, /* complain_on_overflow */ |
582 | bfd_elf_generic_reloc, /* special_function */ | |
583 | "R_PPC64_REL32", /* name */ | |
b34976b6 | 584 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
585 | 0, /* src_mask */ |
586 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 587 | TRUE), /* pcrel_offset */ |
5bd4f169 | 588 | |
10ed1bba | 589 | /* 32-bit relocation to the symbol's procedure linkage table. */ |
5bd4f169 AM |
590 | HOWTO (R_PPC64_PLT32, /* type */ |
591 | 0, /* rightshift */ | |
592 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
593 | 32, /* bitsize */ | |
b34976b6 | 594 | FALSE, /* pc_relative */ |
5bd4f169 AM |
595 | 0, /* bitpos */ |
596 | complain_overflow_bitfield, /* complain_on_overflow */ | |
805fc799 | 597 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 598 | "R_PPC64_PLT32", /* name */ |
b34976b6 | 599 | FALSE, /* partial_inplace */ |
5bd4f169 | 600 | 0, /* src_mask */ |
f5e87a1d | 601 | 0xffffffff, /* dst_mask */ |
b34976b6 | 602 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
603 | |
604 | /* 32-bit PC relative relocation to the symbol's procedure linkage table. | |
605 | FIXME: R_PPC64_PLTREL32 not supported. */ | |
606 | HOWTO (R_PPC64_PLTREL32, /* type */ | |
607 | 0, /* rightshift */ | |
608 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
609 | 32, /* bitsize */ | |
b34976b6 | 610 | TRUE, /* pc_relative */ |
5bd4f169 AM |
611 | 0, /* bitpos */ |
612 | complain_overflow_signed, /* complain_on_overflow */ | |
613 | bfd_elf_generic_reloc, /* special_function */ | |
614 | "R_PPC64_PLTREL32", /* name */ | |
b34976b6 | 615 | FALSE, /* partial_inplace */ |
5bd4f169 | 616 | 0, /* src_mask */ |
f5e87a1d | 617 | 0xffffffff, /* dst_mask */ |
b34976b6 | 618 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
619 | |
620 | /* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for | |
621 | the symbol. */ | |
622 | HOWTO (R_PPC64_PLT16_LO, /* type */ | |
623 | 0, /* rightshift */ | |
624 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
625 | 16, /* bitsize */ | |
b34976b6 | 626 | FALSE, /* pc_relative */ |
5bd4f169 AM |
627 | 0, /* bitpos */ |
628 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 629 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 630 | "R_PPC64_PLT16_LO", /* name */ |
b34976b6 | 631 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
632 | 0, /* src_mask */ |
633 | 0xffff, /* dst_mask */ | |
b34976b6 | 634 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
635 | |
636 | /* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for | |
637 | the symbol. */ | |
638 | HOWTO (R_PPC64_PLT16_HI, /* type */ | |
639 | 16, /* rightshift */ | |
640 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
641 | 16, /* bitsize */ | |
b34976b6 | 642 | FALSE, /* pc_relative */ |
5bd4f169 AM |
643 | 0, /* bitpos */ |
644 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 645 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 646 | "R_PPC64_PLT16_HI", /* name */ |
b34976b6 | 647 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
648 | 0, /* src_mask */ |
649 | 0xffff, /* dst_mask */ | |
b34976b6 | 650 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
651 | |
652 | /* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for | |
653 | the symbol. */ | |
654 | HOWTO (R_PPC64_PLT16_HA, /* type */ | |
655 | 16, /* rightshift */ | |
656 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
657 | 16, /* bitsize */ | |
b34976b6 | 658 | FALSE, /* pc_relative */ |
5bd4f169 AM |
659 | 0, /* bitpos */ |
660 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 661 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 662 | "R_PPC64_PLT16_HA", /* name */ |
b34976b6 | 663 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
664 | 0, /* src_mask */ |
665 | 0xffff, /* dst_mask */ | |
b34976b6 | 666 | FALSE), /* pcrel_offset */ |
5bd4f169 | 667 | |
c061c2d8 | 668 | /* 16-bit section relative relocation. */ |
5bd4f169 AM |
669 | HOWTO (R_PPC64_SECTOFF, /* type */ |
670 | 0, /* rightshift */ | |
c061c2d8 AM |
671 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
672 | 16, /* bitsize */ | |
b34976b6 | 673 | FALSE, /* pc_relative */ |
5bd4f169 AM |
674 | 0, /* bitpos */ |
675 | complain_overflow_bitfield, /* complain_on_overflow */ | |
805fc799 | 676 | ppc64_elf_sectoff_reloc, /* special_function */ |
5bd4f169 | 677 | "R_PPC64_SECTOFF", /* name */ |
b34976b6 | 678 | FALSE, /* partial_inplace */ |
5bd4f169 | 679 | 0, /* src_mask */ |
c061c2d8 | 680 | 0xffff, /* dst_mask */ |
b34976b6 | 681 | FALSE), /* pcrel_offset */ |
5bd4f169 | 682 | |
c061c2d8 | 683 | /* Like R_PPC64_SECTOFF, but no overflow warning. */ |
5bd4f169 AM |
684 | HOWTO (R_PPC64_SECTOFF_LO, /* type */ |
685 | 0, /* rightshift */ | |
686 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
687 | 16, /* bitsize */ | |
b34976b6 | 688 | FALSE, /* pc_relative */ |
5bd4f169 AM |
689 | 0, /* bitpos */ |
690 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 691 | ppc64_elf_sectoff_reloc, /* special_function */ |
5bd4f169 | 692 | "R_PPC64_SECTOFF_LO", /* name */ |
b34976b6 | 693 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
694 | 0, /* src_mask */ |
695 | 0xffff, /* dst_mask */ | |
b34976b6 | 696 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
697 | |
698 | /* 16-bit upper half section relative relocation. */ | |
699 | HOWTO (R_PPC64_SECTOFF_HI, /* type */ | |
700 | 16, /* rightshift */ | |
701 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
702 | 16, /* bitsize */ | |
b34976b6 | 703 | FALSE, /* pc_relative */ |
5bd4f169 AM |
704 | 0, /* bitpos */ |
705 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 706 | ppc64_elf_sectoff_reloc, /* special_function */ |
5bd4f169 | 707 | "R_PPC64_SECTOFF_HI", /* name */ |
b34976b6 | 708 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
709 | 0, /* src_mask */ |
710 | 0xffff, /* dst_mask */ | |
b34976b6 | 711 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
712 | |
713 | /* 16-bit upper half adjusted section relative relocation. */ | |
714 | HOWTO (R_PPC64_SECTOFF_HA, /* type */ | |
715 | 16, /* rightshift */ | |
716 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
717 | 16, /* bitsize */ | |
b34976b6 | 718 | FALSE, /* pc_relative */ |
5bd4f169 AM |
719 | 0, /* bitpos */ |
720 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 721 | ppc64_elf_sectoff_ha_reloc, /* special_function */ |
5bd4f169 | 722 | "R_PPC64_SECTOFF_HA", /* name */ |
b34976b6 | 723 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
724 | 0, /* src_mask */ |
725 | 0xffff, /* dst_mask */ | |
b34976b6 | 726 | FALSE), /* pcrel_offset */ |
5bd4f169 | 727 | |
04c9666a AM |
728 | /* Like R_PPC64_REL24 without touching the two least significant bits. */ |
729 | HOWTO (R_PPC64_REL30, /* type */ | |
5bd4f169 AM |
730 | 2, /* rightshift */ |
731 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
732 | 30, /* bitsize */ | |
b34976b6 | 733 | TRUE, /* pc_relative */ |
5bd4f169 AM |
734 | 0, /* bitpos */ |
735 | complain_overflow_dont, /* complain_on_overflow */ | |
736 | bfd_elf_generic_reloc, /* special_function */ | |
04c9666a | 737 | "R_PPC64_REL30", /* name */ |
b34976b6 | 738 | FALSE, /* partial_inplace */ |
d006db6c | 739 | 0, /* src_mask */ |
5bd4f169 | 740 | 0xfffffffc, /* dst_mask */ |
b34976b6 | 741 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
742 | |
743 | /* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */ | |
744 | ||
745 | /* A standard 64-bit relocation. */ | |
746 | HOWTO (R_PPC64_ADDR64, /* type */ | |
747 | 0, /* rightshift */ | |
748 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
749 | 64, /* bitsize */ | |
b34976b6 | 750 | FALSE, /* pc_relative */ |
5bd4f169 AM |
751 | 0, /* bitpos */ |
752 | complain_overflow_dont, /* complain_on_overflow */ | |
753 | bfd_elf_generic_reloc, /* special_function */ | |
754 | "R_PPC64_ADDR64", /* name */ | |
b34976b6 | 755 | FALSE, /* partial_inplace */ |
5bd4f169 | 756 | 0, /* src_mask */ |
f5e87a1d | 757 | ONES (64), /* dst_mask */ |
b34976b6 | 758 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
759 | |
760 | /* The bits 32-47 of an address. */ | |
761 | HOWTO (R_PPC64_ADDR16_HIGHER, /* type */ | |
762 | 32, /* rightshift */ | |
763 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
764 | 16, /* bitsize */ | |
b34976b6 | 765 | FALSE, /* pc_relative */ |
5bd4f169 AM |
766 | 0, /* bitpos */ |
767 | complain_overflow_dont, /* complain_on_overflow */ | |
768 | bfd_elf_generic_reloc, /* special_function */ | |
769 | "R_PPC64_ADDR16_HIGHER", /* name */ | |
b34976b6 | 770 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
771 | 0, /* src_mask */ |
772 | 0xffff, /* dst_mask */ | |
b34976b6 | 773 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
774 | |
775 | /* The bits 32-47 of an address, plus 1 if the contents of the low | |
776 | 16 bits, treated as a signed number, is negative. */ | |
777 | HOWTO (R_PPC64_ADDR16_HIGHERA, /* type */ | |
778 | 32, /* rightshift */ | |
779 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
780 | 16, /* bitsize */ | |
b34976b6 | 781 | FALSE, /* pc_relative */ |
5bd4f169 AM |
782 | 0, /* bitpos */ |
783 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 784 | ppc64_elf_ha_reloc, /* special_function */ |
5bd4f169 | 785 | "R_PPC64_ADDR16_HIGHERA", /* name */ |
b34976b6 | 786 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
787 | 0, /* src_mask */ |
788 | 0xffff, /* dst_mask */ | |
b34976b6 | 789 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
790 | |
791 | /* The bits 48-63 of an address. */ | |
792 | HOWTO (R_PPC64_ADDR16_HIGHEST,/* type */ | |
793 | 48, /* rightshift */ | |
794 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
795 | 16, /* bitsize */ | |
b34976b6 | 796 | FALSE, /* pc_relative */ |
5bd4f169 AM |
797 | 0, /* bitpos */ |
798 | complain_overflow_dont, /* complain_on_overflow */ | |
799 | bfd_elf_generic_reloc, /* special_function */ | |
800 | "R_PPC64_ADDR16_HIGHEST", /* name */ | |
b34976b6 | 801 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
802 | 0, /* src_mask */ |
803 | 0xffff, /* dst_mask */ | |
b34976b6 | 804 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
805 | |
806 | /* The bits 48-63 of an address, plus 1 if the contents of the low | |
807 | 16 bits, treated as a signed number, is negative. */ | |
808 | HOWTO (R_PPC64_ADDR16_HIGHESTA,/* type */ | |
809 | 48, /* rightshift */ | |
810 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
811 | 16, /* bitsize */ | |
b34976b6 | 812 | FALSE, /* pc_relative */ |
5bd4f169 AM |
813 | 0, /* bitpos */ |
814 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 815 | ppc64_elf_ha_reloc, /* special_function */ |
5bd4f169 | 816 | "R_PPC64_ADDR16_HIGHESTA", /* name */ |
b34976b6 | 817 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
818 | 0, /* src_mask */ |
819 | 0xffff, /* dst_mask */ | |
b34976b6 | 820 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
821 | |
822 | /* Like ADDR64, but may be unaligned. */ | |
823 | HOWTO (R_PPC64_UADDR64, /* type */ | |
824 | 0, /* rightshift */ | |
825 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
826 | 64, /* bitsize */ | |
b34976b6 | 827 | FALSE, /* pc_relative */ |
5bd4f169 AM |
828 | 0, /* bitpos */ |
829 | complain_overflow_dont, /* complain_on_overflow */ | |
830 | bfd_elf_generic_reloc, /* special_function */ | |
831 | "R_PPC64_UADDR64", /* name */ | |
b34976b6 | 832 | FALSE, /* partial_inplace */ |
5bd4f169 | 833 | 0, /* src_mask */ |
f5e87a1d | 834 | ONES (64), /* dst_mask */ |
b34976b6 | 835 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
836 | |
837 | /* 64-bit relative relocation. */ | |
838 | HOWTO (R_PPC64_REL64, /* type */ | |
839 | 0, /* rightshift */ | |
840 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
841 | 64, /* bitsize */ | |
b34976b6 | 842 | TRUE, /* pc_relative */ |
5bd4f169 AM |
843 | 0, /* bitpos */ |
844 | complain_overflow_dont, /* complain_on_overflow */ | |
845 | bfd_elf_generic_reloc, /* special_function */ | |
846 | "R_PPC64_REL64", /* name */ | |
b34976b6 | 847 | FALSE, /* partial_inplace */ |
5bd4f169 | 848 | 0, /* src_mask */ |
f5e87a1d | 849 | ONES (64), /* dst_mask */ |
b34976b6 | 850 | TRUE), /* pcrel_offset */ |
5bd4f169 | 851 | |
cedb70c5 | 852 | /* 64-bit relocation to the symbol's procedure linkage table. */ |
5bd4f169 AM |
853 | HOWTO (R_PPC64_PLT64, /* type */ |
854 | 0, /* rightshift */ | |
855 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
856 | 64, /* bitsize */ | |
b34976b6 | 857 | FALSE, /* pc_relative */ |
5bd4f169 AM |
858 | 0, /* bitpos */ |
859 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 860 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 861 | "R_PPC64_PLT64", /* name */ |
b34976b6 | 862 | FALSE, /* partial_inplace */ |
5bd4f169 | 863 | 0, /* src_mask */ |
f5e87a1d | 864 | ONES (64), /* dst_mask */ |
b34976b6 | 865 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
866 | |
867 | /* 64-bit PC relative relocation to the symbol's procedure linkage | |
868 | table. */ | |
869 | /* FIXME: R_PPC64_PLTREL64 not supported. */ | |
870 | HOWTO (R_PPC64_PLTREL64, /* type */ | |
871 | 0, /* rightshift */ | |
872 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
873 | 64, /* bitsize */ | |
b34976b6 | 874 | TRUE, /* pc_relative */ |
5bd4f169 AM |
875 | 0, /* bitpos */ |
876 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 877 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 878 | "R_PPC64_PLTREL64", /* name */ |
b34976b6 | 879 | FALSE, /* partial_inplace */ |
5bd4f169 | 880 | 0, /* src_mask */ |
f5e87a1d | 881 | ONES (64), /* dst_mask */ |
b34976b6 | 882 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
883 | |
884 | /* 16 bit TOC-relative relocation. */ | |
885 | ||
886 | /* R_PPC64_TOC16 47 half16* S + A - .TOC. */ | |
887 | HOWTO (R_PPC64_TOC16, /* type */ | |
888 | 0, /* rightshift */ | |
889 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
890 | 16, /* bitsize */ | |
b34976b6 | 891 | FALSE, /* pc_relative */ |
5bd4f169 AM |
892 | 0, /* bitpos */ |
893 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 894 | ppc64_elf_toc_reloc, /* special_function */ |
5bd4f169 | 895 | "R_PPC64_TOC16", /* name */ |
b34976b6 | 896 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
897 | 0, /* src_mask */ |
898 | 0xffff, /* dst_mask */ | |
b34976b6 | 899 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
900 | |
901 | /* 16 bit TOC-relative relocation without overflow. */ | |
902 | ||
903 | /* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */ | |
904 | HOWTO (R_PPC64_TOC16_LO, /* type */ | |
905 | 0, /* rightshift */ | |
906 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
907 | 16, /* bitsize */ | |
b34976b6 | 908 | FALSE, /* pc_relative */ |
5bd4f169 AM |
909 | 0, /* bitpos */ |
910 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 911 | ppc64_elf_toc_reloc, /* special_function */ |
5bd4f169 | 912 | "R_PPC64_TOC16_LO", /* name */ |
b34976b6 | 913 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
914 | 0, /* src_mask */ |
915 | 0xffff, /* dst_mask */ | |
b34976b6 | 916 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
917 | |
918 | /* 16 bit TOC-relative relocation, high 16 bits. */ | |
919 | ||
920 | /* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */ | |
921 | HOWTO (R_PPC64_TOC16_HI, /* type */ | |
922 | 16, /* rightshift */ | |
923 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
924 | 16, /* bitsize */ | |
b34976b6 | 925 | FALSE, /* pc_relative */ |
5bd4f169 AM |
926 | 0, /* bitpos */ |
927 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 928 | ppc64_elf_toc_reloc, /* special_function */ |
5bd4f169 | 929 | "R_PPC64_TOC16_HI", /* name */ |
b34976b6 | 930 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
931 | 0, /* src_mask */ |
932 | 0xffff, /* dst_mask */ | |
b34976b6 | 933 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
934 | |
935 | /* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the | |
936 | contents of the low 16 bits, treated as a signed number, is | |
937 | negative. */ | |
938 | ||
939 | /* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */ | |
940 | HOWTO (R_PPC64_TOC16_HA, /* type */ | |
941 | 16, /* rightshift */ | |
942 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
943 | 16, /* bitsize */ | |
b34976b6 | 944 | FALSE, /* pc_relative */ |
5bd4f169 AM |
945 | 0, /* bitpos */ |
946 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 947 | ppc64_elf_toc_ha_reloc, /* special_function */ |
5bd4f169 | 948 | "R_PPC64_TOC16_HA", /* name */ |
b34976b6 | 949 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
950 | 0, /* src_mask */ |
951 | 0xffff, /* dst_mask */ | |
b34976b6 | 952 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
953 | |
954 | /* 64-bit relocation; insert value of TOC base (.TOC.). */ | |
955 | ||
956 | /* R_PPC64_TOC 51 doubleword64 .TOC. */ | |
957 | HOWTO (R_PPC64_TOC, /* type */ | |
958 | 0, /* rightshift */ | |
959 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
960 | 64, /* bitsize */ | |
b34976b6 | 961 | FALSE, /* pc_relative */ |
5bd4f169 AM |
962 | 0, /* bitpos */ |
963 | complain_overflow_bitfield, /* complain_on_overflow */ | |
805fc799 | 964 | ppc64_elf_toc64_reloc, /* special_function */ |
5bd4f169 | 965 | "R_PPC64_TOC", /* name */ |
b34976b6 | 966 | FALSE, /* partial_inplace */ |
5bd4f169 | 967 | 0, /* src_mask */ |
f5e87a1d | 968 | ONES (64), /* dst_mask */ |
b34976b6 | 969 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
970 | |
971 | /* Like R_PPC64_GOT16, but also informs the link editor that the | |
972 | value to relocate may (!) refer to a PLT entry which the link | |
973 | editor (a) may replace with the symbol value. If the link editor | |
974 | is unable to fully resolve the symbol, it may (b) create a PLT | |
975 | entry and store the address to the new PLT entry in the GOT. | |
976 | This permits lazy resolution of function symbols at run time. | |
977 | The link editor may also skip all of this and just (c) emit a | |
978 | R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */ | |
979 | /* FIXME: R_PPC64_PLTGOT16 not implemented. */ | |
980 | HOWTO (R_PPC64_PLTGOT16, /* type */ | |
981 | 0, /* rightshift */ | |
982 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
983 | 16, /* bitsize */ | |
b34976b6 | 984 | FALSE, /* pc_relative */ |
5bd4f169 AM |
985 | 0, /* bitpos */ |
986 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 987 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb AM |
988 | "R_PPC64_PLTGOT16", /* name */ |
989 | FALSE, /* partial_inplace */ | |
990 | 0, /* src_mask */ | |
991 | 0xffff, /* dst_mask */ | |
992 | FALSE), /* pcrel_offset */ | |
993 | ||
994 | /* Like R_PPC64_PLTGOT16, but without overflow. */ | |
995 | /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */ | |
996 | HOWTO (R_PPC64_PLTGOT16_LO, /* type */ | |
997 | 0, /* rightshift */ | |
998 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
999 | 16, /* bitsize */ | |
1000 | FALSE, /* pc_relative */ | |
1001 | 0, /* bitpos */ | |
1002 | complain_overflow_dont, /* complain_on_overflow */ | |
1003 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1004 | "R_PPC64_PLTGOT16_LO", /* name */ | |
1005 | FALSE, /* partial_inplace */ | |
1006 | 0, /* src_mask */ | |
1007 | 0xffff, /* dst_mask */ | |
1008 | FALSE), /* pcrel_offset */ | |
1009 | ||
1010 | /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */ | |
1011 | /* FIXME: R_PPC64_PLTGOT16_HI not implemented. */ | |
1012 | HOWTO (R_PPC64_PLTGOT16_HI, /* type */ | |
1013 | 16, /* rightshift */ | |
1014 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1015 | 16, /* bitsize */ | |
1016 | FALSE, /* pc_relative */ | |
1017 | 0, /* bitpos */ | |
1018 | complain_overflow_dont, /* complain_on_overflow */ | |
1019 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1020 | "R_PPC64_PLTGOT16_HI", /* name */ | |
1021 | FALSE, /* partial_inplace */ | |
1022 | 0, /* src_mask */ | |
1023 | 0xffff, /* dst_mask */ | |
1024 | FALSE), /* pcrel_offset */ | |
1025 | ||
1026 | /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus | |
1027 | 1 if the contents of the low 16 bits, treated as a signed number, | |
1028 | is negative. */ | |
1029 | /* FIXME: R_PPC64_PLTGOT16_HA not implemented. */ | |
1030 | HOWTO (R_PPC64_PLTGOT16_HA, /* type */ | |
1031 | 16, /* rightshift */ | |
1032 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1033 | 16, /* bitsize */ | |
1034 | FALSE, /* pc_relative */ | |
1035 | 0, /* bitpos */ | |
1036 | complain_overflow_dont,/* complain_on_overflow */ | |
1037 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1038 | "R_PPC64_PLTGOT16_HA", /* name */ | |
1039 | FALSE, /* partial_inplace */ | |
1040 | 0, /* src_mask */ | |
1041 | 0xffff, /* dst_mask */ | |
1042 | FALSE), /* pcrel_offset */ | |
1043 | ||
1044 | /* Like R_PPC64_ADDR16, but for instructions with a DS field. */ | |
1045 | HOWTO (R_PPC64_ADDR16_DS, /* type */ | |
1046 | 0, /* rightshift */ | |
1047 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1048 | 16, /* bitsize */ | |
1049 | FALSE, /* pc_relative */ | |
1050 | 0, /* bitpos */ | |
1051 | complain_overflow_bitfield, /* complain_on_overflow */ | |
1052 | bfd_elf_generic_reloc, /* special_function */ | |
1053 | "R_PPC64_ADDR16_DS", /* name */ | |
1054 | FALSE, /* partial_inplace */ | |
1055 | 0, /* src_mask */ | |
1056 | 0xfffc, /* dst_mask */ | |
1057 | FALSE), /* pcrel_offset */ | |
1058 | ||
1059 | /* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */ | |
1060 | HOWTO (R_PPC64_ADDR16_LO_DS, /* type */ | |
1061 | 0, /* rightshift */ | |
1062 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1063 | 16, /* bitsize */ | |
1064 | FALSE, /* pc_relative */ | |
1065 | 0, /* bitpos */ | |
1066 | complain_overflow_dont,/* complain_on_overflow */ | |
1067 | bfd_elf_generic_reloc, /* special_function */ | |
1068 | "R_PPC64_ADDR16_LO_DS",/* name */ | |
1069 | FALSE, /* partial_inplace */ | |
1070 | 0, /* src_mask */ | |
1071 | 0xfffc, /* dst_mask */ | |
1072 | FALSE), /* pcrel_offset */ | |
1073 | ||
1074 | /* Like R_PPC64_GOT16, but for instructions with a DS field. */ | |
1075 | HOWTO (R_PPC64_GOT16_DS, /* type */ | |
1076 | 0, /* rightshift */ | |
1077 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1078 | 16, /* bitsize */ | |
1079 | FALSE, /* pc_relative */ | |
1080 | 0, /* bitpos */ | |
1081 | complain_overflow_signed, /* complain_on_overflow */ | |
1082 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1083 | "R_PPC64_GOT16_DS", /* name */ | |
1084 | FALSE, /* partial_inplace */ | |
1085 | 0, /* src_mask */ | |
1086 | 0xfffc, /* dst_mask */ | |
1087 | FALSE), /* pcrel_offset */ | |
1088 | ||
1089 | /* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */ | |
1090 | HOWTO (R_PPC64_GOT16_LO_DS, /* type */ | |
1091 | 0, /* rightshift */ | |
1092 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1093 | 16, /* bitsize */ | |
1094 | FALSE, /* pc_relative */ | |
1095 | 0, /* bitpos */ | |
1096 | complain_overflow_dont, /* complain_on_overflow */ | |
1097 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1098 | "R_PPC64_GOT16_LO_DS", /* name */ | |
1099 | FALSE, /* partial_inplace */ | |
1100 | 0, /* src_mask */ | |
1101 | 0xfffc, /* dst_mask */ | |
1102 | FALSE), /* pcrel_offset */ | |
1103 | ||
1104 | /* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */ | |
1105 | HOWTO (R_PPC64_PLT16_LO_DS, /* type */ | |
1106 | 0, /* rightshift */ | |
1107 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1108 | 16, /* bitsize */ | |
1109 | FALSE, /* pc_relative */ | |
1110 | 0, /* bitpos */ | |
1111 | complain_overflow_dont, /* complain_on_overflow */ | |
1112 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1113 | "R_PPC64_PLT16_LO_DS", /* name */ | |
1114 | FALSE, /* partial_inplace */ | |
1115 | 0, /* src_mask */ | |
1116 | 0xfffc, /* dst_mask */ | |
1117 | FALSE), /* pcrel_offset */ | |
1118 | ||
1119 | /* Like R_PPC64_SECTOFF, but for instructions with a DS field. */ | |
1120 | HOWTO (R_PPC64_SECTOFF_DS, /* type */ | |
1121 | 0, /* rightshift */ | |
1122 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1123 | 16, /* bitsize */ | |
1124 | FALSE, /* pc_relative */ | |
1125 | 0, /* bitpos */ | |
1126 | complain_overflow_bitfield, /* complain_on_overflow */ | |
1127 | ppc64_elf_sectoff_reloc, /* special_function */ | |
1128 | "R_PPC64_SECTOFF_DS", /* name */ | |
1129 | FALSE, /* partial_inplace */ | |
1130 | 0, /* src_mask */ | |
1131 | 0xfffc, /* dst_mask */ | |
1132 | FALSE), /* pcrel_offset */ | |
1133 | ||
1134 | /* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */ | |
1135 | HOWTO (R_PPC64_SECTOFF_LO_DS, /* type */ | |
1136 | 0, /* rightshift */ | |
1137 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1138 | 16, /* bitsize */ | |
1139 | FALSE, /* pc_relative */ | |
1140 | 0, /* bitpos */ | |
1141 | complain_overflow_dont, /* complain_on_overflow */ | |
1142 | ppc64_elf_sectoff_reloc, /* special_function */ | |
1143 | "R_PPC64_SECTOFF_LO_DS",/* name */ | |
1144 | FALSE, /* partial_inplace */ | |
1145 | 0, /* src_mask */ | |
1146 | 0xfffc, /* dst_mask */ | |
1147 | FALSE), /* pcrel_offset */ | |
1148 | ||
1149 | /* Like R_PPC64_TOC16, but for instructions with a DS field. */ | |
1150 | HOWTO (R_PPC64_TOC16_DS, /* type */ | |
1151 | 0, /* rightshift */ | |
1152 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1153 | 16, /* bitsize */ | |
1154 | FALSE, /* pc_relative */ | |
1155 | 0, /* bitpos */ | |
1156 | complain_overflow_signed, /* complain_on_overflow */ | |
1157 | ppc64_elf_toc_reloc, /* special_function */ | |
1158 | "R_PPC64_TOC16_DS", /* name */ | |
1159 | FALSE, /* partial_inplace */ | |
1160 | 0, /* src_mask */ | |
1161 | 0xfffc, /* dst_mask */ | |
1162 | FALSE), /* pcrel_offset */ | |
1163 | ||
1164 | /* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */ | |
1165 | HOWTO (R_PPC64_TOC16_LO_DS, /* type */ | |
1166 | 0, /* rightshift */ | |
1167 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1168 | 16, /* bitsize */ | |
1169 | FALSE, /* pc_relative */ | |
1170 | 0, /* bitpos */ | |
1171 | complain_overflow_dont, /* complain_on_overflow */ | |
1172 | ppc64_elf_toc_reloc, /* special_function */ | |
1173 | "R_PPC64_TOC16_LO_DS", /* name */ | |
1174 | FALSE, /* partial_inplace */ | |
1175 | 0, /* src_mask */ | |
1176 | 0xfffc, /* dst_mask */ | |
1177 | FALSE), /* pcrel_offset */ | |
1178 | ||
1179 | /* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */ | |
1180 | /* FIXME: R_PPC64_PLTGOT16_DS not implemented. */ | |
1181 | HOWTO (R_PPC64_PLTGOT16_DS, /* type */ | |
1182 | 0, /* rightshift */ | |
1183 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1184 | 16, /* bitsize */ | |
1185 | FALSE, /* pc_relative */ | |
1186 | 0, /* bitpos */ | |
1187 | complain_overflow_signed, /* complain_on_overflow */ | |
1188 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1189 | "R_PPC64_PLTGOT16_DS", /* name */ | |
1190 | FALSE, /* partial_inplace */ | |
1191 | 0, /* src_mask */ | |
1192 | 0xfffc, /* dst_mask */ | |
1193 | FALSE), /* pcrel_offset */ | |
1194 | ||
1195 | /* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */ | |
1196 | /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */ | |
1197 | HOWTO (R_PPC64_PLTGOT16_LO_DS,/* type */ | |
1198 | 0, /* rightshift */ | |
1199 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1200 | 16, /* bitsize */ | |
1201 | FALSE, /* pc_relative */ | |
1202 | 0, /* bitpos */ | |
1203 | complain_overflow_dont, /* complain_on_overflow */ | |
1204 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1205 | "R_PPC64_PLTGOT16_LO_DS",/* name */ | |
1206 | FALSE, /* partial_inplace */ | |
1207 | 0, /* src_mask */ | |
1208 | 0xfffc, /* dst_mask */ | |
1209 | FALSE), /* pcrel_offset */ | |
1210 | ||
1211 | /* Marker reloc for TLS. */ | |
1212 | HOWTO (R_PPC64_TLS, | |
1213 | 0, /* rightshift */ | |
1214 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1215 | 32, /* bitsize */ | |
1216 | FALSE, /* pc_relative */ | |
1217 | 0, /* bitpos */ | |
1218 | complain_overflow_dont, /* complain_on_overflow */ | |
1219 | bfd_elf_generic_reloc, /* special_function */ | |
1220 | "R_PPC64_TLS", /* name */ | |
1221 | FALSE, /* partial_inplace */ | |
1222 | 0, /* src_mask */ | |
1223 | 0, /* dst_mask */ | |
1224 | FALSE), /* pcrel_offset */ | |
1225 | ||
1226 | /* Computes the load module index of the load module that contains the | |
1227 | definition of its TLS sym. */ | |
1228 | HOWTO (R_PPC64_DTPMOD64, | |
1229 | 0, /* rightshift */ | |
1230 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
1231 | 64, /* bitsize */ | |
1232 | FALSE, /* pc_relative */ | |
1233 | 0, /* bitpos */ | |
1234 | complain_overflow_dont, /* complain_on_overflow */ | |
1235 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1236 | "R_PPC64_DTPMOD64", /* name */ | |
1237 | FALSE, /* partial_inplace */ | |
1238 | 0, /* src_mask */ | |
1239 | ONES (64), /* dst_mask */ | |
1240 | FALSE), /* pcrel_offset */ | |
1241 | ||
1242 | /* Computes a dtv-relative displacement, the difference between the value | |
1243 | of sym+add and the base address of the thread-local storage block that | |
1244 | contains the definition of sym, minus 0x8000. */ | |
1245 | HOWTO (R_PPC64_DTPREL64, | |
1246 | 0, /* rightshift */ | |
1247 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
1248 | 64, /* bitsize */ | |
1249 | FALSE, /* pc_relative */ | |
1250 | 0, /* bitpos */ | |
1251 | complain_overflow_dont, /* complain_on_overflow */ | |
1252 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1253 | "R_PPC64_DTPREL64", /* name */ | |
1254 | FALSE, /* partial_inplace */ | |
1255 | 0, /* src_mask */ | |
1256 | ONES (64), /* dst_mask */ | |
1257 | FALSE), /* pcrel_offset */ | |
1258 | ||
1259 | /* A 16 bit dtprel reloc. */ | |
1260 | HOWTO (R_PPC64_DTPREL16, | |
1261 | 0, /* rightshift */ | |
1262 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1263 | 16, /* bitsize */ | |
1264 | FALSE, /* pc_relative */ | |
1265 | 0, /* bitpos */ | |
1266 | complain_overflow_signed, /* complain_on_overflow */ | |
1267 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1268 | "R_PPC64_DTPREL16", /* name */ | |
1269 | FALSE, /* partial_inplace */ | |
1270 | 0, /* src_mask */ | |
1271 | 0xffff, /* dst_mask */ | |
1272 | FALSE), /* pcrel_offset */ | |
1273 | ||
1274 | /* Like DTPREL16, but no overflow. */ | |
1275 | HOWTO (R_PPC64_DTPREL16_LO, | |
1276 | 0, /* rightshift */ | |
1277 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1278 | 16, /* bitsize */ | |
1279 | FALSE, /* pc_relative */ | |
1280 | 0, /* bitpos */ | |
1281 | complain_overflow_dont, /* complain_on_overflow */ | |
1282 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1283 | "R_PPC64_DTPREL16_LO", /* name */ | |
1284 | FALSE, /* partial_inplace */ | |
1285 | 0, /* src_mask */ | |
1286 | 0xffff, /* dst_mask */ | |
1287 | FALSE), /* pcrel_offset */ | |
1288 | ||
1289 | /* Like DTPREL16_LO, but next higher group of 16 bits. */ | |
1290 | HOWTO (R_PPC64_DTPREL16_HI, | |
1291 | 16, /* rightshift */ | |
1292 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1293 | 16, /* bitsize */ | |
1294 | FALSE, /* pc_relative */ | |
1295 | 0, /* bitpos */ | |
1296 | complain_overflow_dont, /* complain_on_overflow */ | |
1297 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1298 | "R_PPC64_DTPREL16_HI", /* name */ | |
1299 | FALSE, /* partial_inplace */ | |
1300 | 0, /* src_mask */ | |
1301 | 0xffff, /* dst_mask */ | |
1302 | FALSE), /* pcrel_offset */ | |
1303 | ||
1304 | /* Like DTPREL16_HI, but adjust for low 16 bits. */ | |
1305 | HOWTO (R_PPC64_DTPREL16_HA, | |
1306 | 16, /* rightshift */ | |
1307 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1308 | 16, /* bitsize */ | |
1309 | FALSE, /* pc_relative */ | |
1310 | 0, /* bitpos */ | |
1311 | complain_overflow_dont, /* complain_on_overflow */ | |
1312 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1313 | "R_PPC64_DTPREL16_HA", /* name */ | |
1314 | FALSE, /* partial_inplace */ | |
1315 | 0, /* src_mask */ | |
1316 | 0xffff, /* dst_mask */ | |
1317 | FALSE), /* pcrel_offset */ | |
1318 | ||
1319 | /* Like DTPREL16_HI, but next higher group of 16 bits. */ | |
1320 | HOWTO (R_PPC64_DTPREL16_HIGHER, | |
1321 | 32, /* rightshift */ | |
1322 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1323 | 16, /* bitsize */ | |
1324 | FALSE, /* pc_relative */ | |
1325 | 0, /* bitpos */ | |
1326 | complain_overflow_dont, /* complain_on_overflow */ | |
1327 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1328 | "R_PPC64_DTPREL16_HIGHER", /* name */ | |
1329 | FALSE, /* partial_inplace */ | |
1330 | 0, /* src_mask */ | |
1331 | 0xffff, /* dst_mask */ | |
1332 | FALSE), /* pcrel_offset */ | |
1333 | ||
1334 | /* Like DTPREL16_HIGHER, but adjust for low 16 bits. */ | |
1335 | HOWTO (R_PPC64_DTPREL16_HIGHERA, | |
1336 | 32, /* rightshift */ | |
1337 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1338 | 16, /* bitsize */ | |
1339 | FALSE, /* pc_relative */ | |
1340 | 0, /* bitpos */ | |
1341 | complain_overflow_dont, /* complain_on_overflow */ | |
1342 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1343 | "R_PPC64_DTPREL16_HIGHERA", /* name */ | |
1344 | FALSE, /* partial_inplace */ | |
1345 | 0, /* src_mask */ | |
1346 | 0xffff, /* dst_mask */ | |
1347 | FALSE), /* pcrel_offset */ | |
1348 | ||
1349 | /* Like DTPREL16_HIGHER, but next higher group of 16 bits. */ | |
1350 | HOWTO (R_PPC64_DTPREL16_HIGHEST, | |
1351 | 48, /* rightshift */ | |
1352 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1353 | 16, /* bitsize */ | |
1354 | FALSE, /* pc_relative */ | |
1355 | 0, /* bitpos */ | |
1356 | complain_overflow_dont, /* complain_on_overflow */ | |
1357 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1358 | "R_PPC64_DTPREL16_HIGHEST", /* name */ | |
1359 | FALSE, /* partial_inplace */ | |
1360 | 0, /* src_mask */ | |
1361 | 0xffff, /* dst_mask */ | |
1362 | FALSE), /* pcrel_offset */ | |
1363 | ||
1364 | /* Like DTPREL16_HIGHEST, but adjust for low 16 bits. */ | |
1365 | HOWTO (R_PPC64_DTPREL16_HIGHESTA, | |
1366 | 48, /* rightshift */ | |
1367 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1368 | 16, /* bitsize */ | |
1369 | FALSE, /* pc_relative */ | |
1370 | 0, /* bitpos */ | |
1371 | complain_overflow_dont, /* complain_on_overflow */ | |
1372 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1373 | "R_PPC64_DTPREL16_HIGHESTA", /* name */ | |
1374 | FALSE, /* partial_inplace */ | |
1375 | 0, /* src_mask */ | |
1376 | 0xffff, /* dst_mask */ | |
1377 | FALSE), /* pcrel_offset */ | |
1378 | ||
1379 | /* Like DTPREL16, but for insns with a DS field. */ | |
1380 | HOWTO (R_PPC64_DTPREL16_DS, | |
1381 | 0, /* rightshift */ | |
1382 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1383 | 16, /* bitsize */ | |
1384 | FALSE, /* pc_relative */ | |
1385 | 0, /* bitpos */ | |
1386 | complain_overflow_signed, /* complain_on_overflow */ | |
1387 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1388 | "R_PPC64_DTPREL16_DS", /* name */ | |
1389 | FALSE, /* partial_inplace */ | |
1390 | 0, /* src_mask */ | |
1391 | 0xfffc, /* dst_mask */ | |
1392 | FALSE), /* pcrel_offset */ | |
1393 | ||
1394 | /* Like DTPREL16_DS, but no overflow. */ | |
1395 | HOWTO (R_PPC64_DTPREL16_LO_DS, | |
1396 | 0, /* rightshift */ | |
1397 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1398 | 16, /* bitsize */ | |
1399 | FALSE, /* pc_relative */ | |
1400 | 0, /* bitpos */ | |
1401 | complain_overflow_dont, /* complain_on_overflow */ | |
1402 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1403 | "R_PPC64_DTPREL16_LO_DS", /* name */ | |
1404 | FALSE, /* partial_inplace */ | |
1405 | 0, /* src_mask */ | |
1406 | 0xfffc, /* dst_mask */ | |
1407 | FALSE), /* pcrel_offset */ | |
1408 | ||
1409 | /* Computes a tp-relative displacement, the difference between the value of | |
1410 | sym+add and the value of the thread pointer (r13). */ | |
1411 | HOWTO (R_PPC64_TPREL64, | |
1412 | 0, /* rightshift */ | |
1413 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
1414 | 64, /* bitsize */ | |
1415 | FALSE, /* pc_relative */ | |
1416 | 0, /* bitpos */ | |
1417 | complain_overflow_dont, /* complain_on_overflow */ | |
1418 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1419 | "R_PPC64_TPREL64", /* name */ | |
1420 | FALSE, /* partial_inplace */ | |
1421 | 0, /* src_mask */ | |
1422 | ONES (64), /* dst_mask */ | |
1423 | FALSE), /* pcrel_offset */ | |
1424 | ||
1425 | /* A 16 bit tprel reloc. */ | |
1426 | HOWTO (R_PPC64_TPREL16, | |
1427 | 0, /* rightshift */ | |
1428 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1429 | 16, /* bitsize */ | |
1430 | FALSE, /* pc_relative */ | |
1431 | 0, /* bitpos */ | |
1432 | complain_overflow_signed, /* complain_on_overflow */ | |
1433 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1434 | "R_PPC64_TPREL16", /* name */ | |
1435 | FALSE, /* partial_inplace */ | |
1436 | 0, /* src_mask */ | |
1437 | 0xffff, /* dst_mask */ | |
1438 | FALSE), /* pcrel_offset */ | |
1439 | ||
1440 | /* Like TPREL16, but no overflow. */ | |
1441 | HOWTO (R_PPC64_TPREL16_LO, | |
1442 | 0, /* rightshift */ | |
1443 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1444 | 16, /* bitsize */ | |
1445 | FALSE, /* pc_relative */ | |
1446 | 0, /* bitpos */ | |
1447 | complain_overflow_dont, /* complain_on_overflow */ | |
1448 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1449 | "R_PPC64_TPREL16_LO", /* name */ | |
1450 | FALSE, /* partial_inplace */ | |
1451 | 0, /* src_mask */ | |
1452 | 0xffff, /* dst_mask */ | |
1453 | FALSE), /* pcrel_offset */ | |
1454 | ||
1455 | /* Like TPREL16_LO, but next higher group of 16 bits. */ | |
1456 | HOWTO (R_PPC64_TPREL16_HI, | |
1457 | 16, /* rightshift */ | |
1458 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1459 | 16, /* bitsize */ | |
1460 | FALSE, /* pc_relative */ | |
1461 | 0, /* bitpos */ | |
1462 | complain_overflow_dont, /* complain_on_overflow */ | |
1463 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1464 | "R_PPC64_TPREL16_HI", /* name */ | |
1465 | FALSE, /* partial_inplace */ | |
1466 | 0, /* src_mask */ | |
1467 | 0xffff, /* dst_mask */ | |
1468 | FALSE), /* pcrel_offset */ | |
1469 | ||
1470 | /* Like TPREL16_HI, but adjust for low 16 bits. */ | |
1471 | HOWTO (R_PPC64_TPREL16_HA, | |
1472 | 16, /* rightshift */ | |
1473 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1474 | 16, /* bitsize */ | |
1475 | FALSE, /* pc_relative */ | |
1476 | 0, /* bitpos */ | |
1477 | complain_overflow_dont, /* complain_on_overflow */ | |
1478 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1479 | "R_PPC64_TPREL16_HA", /* name */ | |
1480 | FALSE, /* partial_inplace */ | |
1481 | 0, /* src_mask */ | |
1482 | 0xffff, /* dst_mask */ | |
1483 | FALSE), /* pcrel_offset */ | |
1484 | ||
1485 | /* Like TPREL16_HI, but next higher group of 16 bits. */ | |
1486 | HOWTO (R_PPC64_TPREL16_HIGHER, | |
1487 | 32, /* rightshift */ | |
1488 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1489 | 16, /* bitsize */ | |
1490 | FALSE, /* pc_relative */ | |
1491 | 0, /* bitpos */ | |
1492 | complain_overflow_dont, /* complain_on_overflow */ | |
1493 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1494 | "R_PPC64_TPREL16_HIGHER", /* name */ | |
1495 | FALSE, /* partial_inplace */ | |
1496 | 0, /* src_mask */ | |
1497 | 0xffff, /* dst_mask */ | |
1498 | FALSE), /* pcrel_offset */ | |
1499 | ||
1500 | /* Like TPREL16_HIGHER, but adjust for low 16 bits. */ | |
1501 | HOWTO (R_PPC64_TPREL16_HIGHERA, | |
1502 | 32, /* rightshift */ | |
1503 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1504 | 16, /* bitsize */ | |
1505 | FALSE, /* pc_relative */ | |
1506 | 0, /* bitpos */ | |
1507 | complain_overflow_dont, /* complain_on_overflow */ | |
1508 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1509 | "R_PPC64_TPREL16_HIGHERA", /* name */ | |
1510 | FALSE, /* partial_inplace */ | |
1511 | 0, /* src_mask */ | |
1512 | 0xffff, /* dst_mask */ | |
1513 | FALSE), /* pcrel_offset */ | |
1514 | ||
1515 | /* Like TPREL16_HIGHER, but next higher group of 16 bits. */ | |
1516 | HOWTO (R_PPC64_TPREL16_HIGHEST, | |
1517 | 48, /* rightshift */ | |
1518 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1519 | 16, /* bitsize */ | |
1520 | FALSE, /* pc_relative */ | |
1521 | 0, /* bitpos */ | |
1522 | complain_overflow_dont, /* complain_on_overflow */ | |
1523 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1524 | "R_PPC64_TPREL16_HIGHEST", /* name */ | |
1525 | FALSE, /* partial_inplace */ | |
1526 | 0, /* src_mask */ | |
1527 | 0xffff, /* dst_mask */ | |
1528 | FALSE), /* pcrel_offset */ | |
1529 | ||
1530 | /* Like TPREL16_HIGHEST, but adjust for low 16 bits. */ | |
1531 | HOWTO (R_PPC64_TPREL16_HIGHESTA, | |
1532 | 48, /* rightshift */ | |
1533 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1534 | 16, /* bitsize */ | |
1535 | FALSE, /* pc_relative */ | |
1536 | 0, /* bitpos */ | |
1537 | complain_overflow_dont, /* complain_on_overflow */ | |
1538 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1539 | "R_PPC64_TPREL16_HIGHESTA", /* name */ | |
1540 | FALSE, /* partial_inplace */ | |
1541 | 0, /* src_mask */ | |
1542 | 0xffff, /* dst_mask */ | |
1543 | FALSE), /* pcrel_offset */ | |
1544 | ||
1545 | /* Like TPREL16, but for insns with a DS field. */ | |
1546 | HOWTO (R_PPC64_TPREL16_DS, | |
1547 | 0, /* rightshift */ | |
1548 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1549 | 16, /* bitsize */ | |
1550 | FALSE, /* pc_relative */ | |
1551 | 0, /* bitpos */ | |
1552 | complain_overflow_signed, /* complain_on_overflow */ | |
1553 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1554 | "R_PPC64_TPREL16_DS", /* name */ | |
1555 | FALSE, /* partial_inplace */ | |
1556 | 0, /* src_mask */ | |
1557 | 0xfffc, /* dst_mask */ | |
1558 | FALSE), /* pcrel_offset */ | |
1559 | ||
1560 | /* Like TPREL16_DS, but no overflow. */ | |
1561 | HOWTO (R_PPC64_TPREL16_LO_DS, | |
1562 | 0, /* rightshift */ | |
1563 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1564 | 16, /* bitsize */ | |
1565 | FALSE, /* pc_relative */ | |
1566 | 0, /* bitpos */ | |
1567 | complain_overflow_dont, /* complain_on_overflow */ | |
1568 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1569 | "R_PPC64_TPREL16_LO_DS", /* name */ | |
1570 | FALSE, /* partial_inplace */ | |
1571 | 0, /* src_mask */ | |
1572 | 0xfffc, /* dst_mask */ | |
1573 | FALSE), /* pcrel_offset */ | |
1574 | ||
1575 | /* Allocates two contiguous entries in the GOT to hold a tls_index structure, | |
1576 | with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset | |
1577 | to the first entry relative to the TOC base (r2). */ | |
1578 | HOWTO (R_PPC64_GOT_TLSGD16, | |
1579 | 0, /* rightshift */ | |
1580 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1581 | 16, /* bitsize */ | |
1582 | FALSE, /* pc_relative */ | |
1583 | 0, /* bitpos */ | |
1584 | complain_overflow_signed, /* complain_on_overflow */ | |
1585 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1586 | "R_PPC64_GOT_TLSGD16", /* name */ | |
b34976b6 | 1587 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1588 | 0, /* src_mask */ |
1589 | 0xffff, /* dst_mask */ | |
b34976b6 | 1590 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1591 | |
411e1bfb AM |
1592 | /* Like GOT_TLSGD16, but no overflow. */ |
1593 | HOWTO (R_PPC64_GOT_TLSGD16_LO, | |
5bd4f169 AM |
1594 | 0, /* rightshift */ |
1595 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1596 | 16, /* bitsize */ | |
b34976b6 | 1597 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1598 | 0, /* bitpos */ |
1599 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 1600 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1601 | "R_PPC64_GOT_TLSGD16_LO", /* name */ |
b34976b6 | 1602 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1603 | 0, /* src_mask */ |
1604 | 0xffff, /* dst_mask */ | |
b34976b6 | 1605 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1606 | |
411e1bfb AM |
1607 | /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */ |
1608 | HOWTO (R_PPC64_GOT_TLSGD16_HI, | |
5bd4f169 AM |
1609 | 16, /* rightshift */ |
1610 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1611 | 16, /* bitsize */ | |
b34976b6 | 1612 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1613 | 0, /* bitpos */ |
1614 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 1615 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1616 | "R_PPC64_GOT_TLSGD16_HI", /* name */ |
b34976b6 | 1617 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1618 | 0, /* src_mask */ |
1619 | 0xffff, /* dst_mask */ | |
b34976b6 | 1620 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1621 | |
411e1bfb AM |
1622 | /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */ |
1623 | HOWTO (R_PPC64_GOT_TLSGD16_HA, | |
5bd4f169 AM |
1624 | 16, /* rightshift */ |
1625 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1626 | 16, /* bitsize */ | |
b34976b6 | 1627 | FALSE, /* pc_relative */ |
5bd4f169 | 1628 | 0, /* bitpos */ |
411e1bfb | 1629 | complain_overflow_dont, /* complain_on_overflow */ |
805fc799 | 1630 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1631 | "R_PPC64_GOT_TLSGD16_HA", /* name */ |
b34976b6 | 1632 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1633 | 0, /* src_mask */ |
1634 | 0xffff, /* dst_mask */ | |
b34976b6 | 1635 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1636 | |
411e1bfb AM |
1637 | /* Allocates two contiguous entries in the GOT to hold a tls_index structure, |
1638 | with values (sym+add)@dtpmod and zero, and computes the offset to the | |
1639 | first entry relative to the TOC base (r2). */ | |
1640 | HOWTO (R_PPC64_GOT_TLSLD16, | |
5bd4f169 AM |
1641 | 0, /* rightshift */ |
1642 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1643 | 16, /* bitsize */ | |
b34976b6 | 1644 | FALSE, /* pc_relative */ |
5bd4f169 | 1645 | 0, /* bitpos */ |
411e1bfb AM |
1646 | complain_overflow_signed, /* complain_on_overflow */ |
1647 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1648 | "R_PPC64_GOT_TLSLD16", /* name */ | |
b34976b6 | 1649 | FALSE, /* partial_inplace */ |
d006db6c | 1650 | 0, /* src_mask */ |
411e1bfb | 1651 | 0xffff, /* dst_mask */ |
b34976b6 | 1652 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1653 | |
411e1bfb AM |
1654 | /* Like GOT_TLSLD16, but no overflow. */ |
1655 | HOWTO (R_PPC64_GOT_TLSLD16_LO, | |
5bd4f169 AM |
1656 | 0, /* rightshift */ |
1657 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1658 | 16, /* bitsize */ | |
b34976b6 | 1659 | FALSE, /* pc_relative */ |
5bd4f169 | 1660 | 0, /* bitpos */ |
411e1bfb AM |
1661 | complain_overflow_dont, /* complain_on_overflow */ |
1662 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1663 | "R_PPC64_GOT_TLSLD16_LO", /* name */ | |
b34976b6 | 1664 | FALSE, /* partial_inplace */ |
d006db6c | 1665 | 0, /* src_mask */ |
411e1bfb | 1666 | 0xffff, /* dst_mask */ |
b34976b6 | 1667 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1668 | |
411e1bfb AM |
1669 | /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */ |
1670 | HOWTO (R_PPC64_GOT_TLSLD16_HI, | |
1671 | 16, /* rightshift */ | |
5bd4f169 AM |
1672 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1673 | 16, /* bitsize */ | |
b34976b6 | 1674 | FALSE, /* pc_relative */ |
5bd4f169 | 1675 | 0, /* bitpos */ |
411e1bfb | 1676 | complain_overflow_dont, /* complain_on_overflow */ |
805fc799 | 1677 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1678 | "R_PPC64_GOT_TLSLD16_HI", /* name */ |
b34976b6 | 1679 | FALSE, /* partial_inplace */ |
d006db6c | 1680 | 0, /* src_mask */ |
411e1bfb | 1681 | 0xffff, /* dst_mask */ |
b34976b6 | 1682 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1683 | |
411e1bfb AM |
1684 | /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */ |
1685 | HOWTO (R_PPC64_GOT_TLSLD16_HA, | |
1686 | 16, /* rightshift */ | |
5bd4f169 AM |
1687 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1688 | 16, /* bitsize */ | |
b34976b6 | 1689 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1690 | 0, /* bitpos */ |
1691 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 1692 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1693 | "R_PPC64_GOT_TLSLD16_HA", /* name */ |
b34976b6 | 1694 | FALSE, /* partial_inplace */ |
d006db6c | 1695 | 0, /* src_mask */ |
411e1bfb | 1696 | 0xffff, /* dst_mask */ |
b34976b6 | 1697 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1698 | |
411e1bfb AM |
1699 | /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes |
1700 | the offset to the entry relative to the TOC base (r2). */ | |
1701 | HOWTO (R_PPC64_GOT_DTPREL16_DS, | |
5bd4f169 AM |
1702 | 0, /* rightshift */ |
1703 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1704 | 16, /* bitsize */ | |
b34976b6 | 1705 | FALSE, /* pc_relative */ |
5bd4f169 | 1706 | 0, /* bitpos */ |
411e1bfb | 1707 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 1708 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1709 | "R_PPC64_GOT_DTPREL16_DS", /* name */ |
b34976b6 | 1710 | FALSE, /* partial_inplace */ |
d006db6c | 1711 | 0, /* src_mask */ |
5bd4f169 | 1712 | 0xfffc, /* dst_mask */ |
b34976b6 | 1713 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1714 | |
411e1bfb AM |
1715 | /* Like GOT_DTPREL16_DS, but no overflow. */ |
1716 | HOWTO (R_PPC64_GOT_DTPREL16_LO_DS, | |
5bd4f169 | 1717 | 0, /* rightshift */ |
c061c2d8 AM |
1718 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1719 | 16, /* bitsize */ | |
b34976b6 | 1720 | FALSE, /* pc_relative */ |
5bd4f169 | 1721 | 0, /* bitpos */ |
411e1bfb AM |
1722 | complain_overflow_dont, /* complain_on_overflow */ |
1723 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1724 | "R_PPC64_GOT_DTPREL16_LO_DS", /* name */ | |
b34976b6 | 1725 | FALSE, /* partial_inplace */ |
d006db6c | 1726 | 0, /* src_mask */ |
c061c2d8 | 1727 | 0xfffc, /* dst_mask */ |
b34976b6 | 1728 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1729 | |
411e1bfb AM |
1730 | /* Like GOT_DTPREL16_LO_DS, but next higher group of 16 bits. */ |
1731 | HOWTO (R_PPC64_GOT_DTPREL16_HI, | |
1732 | 16, /* rightshift */ | |
5bd4f169 AM |
1733 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1734 | 16, /* bitsize */ | |
b34976b6 | 1735 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1736 | 0, /* bitpos */ |
1737 | complain_overflow_dont, /* complain_on_overflow */ | |
411e1bfb AM |
1738 | ppc64_elf_unhandled_reloc, /* special_function */ |
1739 | "R_PPC64_GOT_DTPREL16_HI", /* name */ | |
b34976b6 | 1740 | FALSE, /* partial_inplace */ |
d006db6c | 1741 | 0, /* src_mask */ |
411e1bfb | 1742 | 0xffff, /* dst_mask */ |
b34976b6 | 1743 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1744 | |
411e1bfb AM |
1745 | /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */ |
1746 | HOWTO (R_PPC64_GOT_DTPREL16_HA, | |
1747 | 16, /* rightshift */ | |
1748 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1749 | 16, /* bitsize */ | |
1750 | FALSE, /* pc_relative */ | |
1751 | 0, /* bitpos */ | |
1752 | complain_overflow_dont, /* complain_on_overflow */ | |
1753 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1754 | "R_PPC64_GOT_DTPREL16_HA", /* name */ | |
1755 | FALSE, /* partial_inplace */ | |
1756 | 0, /* src_mask */ | |
1757 | 0xffff, /* dst_mask */ | |
1758 | FALSE), /* pcrel_offset */ | |
1759 | ||
1760 | /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the | |
1761 | offset to the entry relative to the TOC base (r2). */ | |
1762 | HOWTO (R_PPC64_GOT_TPREL16_DS, | |
5bd4f169 AM |
1763 | 0, /* rightshift */ |
1764 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1765 | 16, /* bitsize */ | |
b34976b6 | 1766 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1767 | 0, /* bitpos */ |
1768 | complain_overflow_signed, /* complain_on_overflow */ | |
411e1bfb AM |
1769 | ppc64_elf_unhandled_reloc, /* special_function */ |
1770 | "R_PPC64_GOT_TPREL16_DS", /* name */ | |
b34976b6 | 1771 | FALSE, /* partial_inplace */ |
d006db6c | 1772 | 0, /* src_mask */ |
ad8e1ba5 | 1773 | 0xfffc, /* dst_mask */ |
b34976b6 | 1774 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1775 | |
411e1bfb AM |
1776 | /* Like GOT_TPREL16_DS, but no overflow. */ |
1777 | HOWTO (R_PPC64_GOT_TPREL16_LO_DS, | |
5bd4f169 AM |
1778 | 0, /* rightshift */ |
1779 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1780 | 16, /* bitsize */ | |
b34976b6 | 1781 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1782 | 0, /* bitpos */ |
1783 | complain_overflow_dont, /* complain_on_overflow */ | |
411e1bfb AM |
1784 | ppc64_elf_unhandled_reloc, /* special_function */ |
1785 | "R_PPC64_GOT_TPREL16_LO_DS", /* name */ | |
b34976b6 | 1786 | FALSE, /* partial_inplace */ |
d006db6c | 1787 | 0, /* src_mask */ |
ad8e1ba5 | 1788 | 0xfffc, /* dst_mask */ |
b34976b6 | 1789 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1790 | |
411e1bfb AM |
1791 | /* Like GOT_TPREL16_LO_DS, but next higher group of 16 bits. */ |
1792 | HOWTO (R_PPC64_GOT_TPREL16_HI, | |
1793 | 16, /* rightshift */ | |
5bd4f169 AM |
1794 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1795 | 16, /* bitsize */ | |
b34976b6 | 1796 | FALSE, /* pc_relative */ |
5bd4f169 | 1797 | 0, /* bitpos */ |
411e1bfb | 1798 | complain_overflow_dont, /* complain_on_overflow */ |
805fc799 | 1799 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1800 | "R_PPC64_GOT_TPREL16_HI", /* name */ |
b34976b6 | 1801 | FALSE, /* partial_inplace */ |
d006db6c | 1802 | 0, /* src_mask */ |
411e1bfb | 1803 | 0xffff, /* dst_mask */ |
b34976b6 | 1804 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1805 | |
411e1bfb AM |
1806 | /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */ |
1807 | HOWTO (R_PPC64_GOT_TPREL16_HA, | |
1808 | 16, /* rightshift */ | |
5bd4f169 AM |
1809 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1810 | 16, /* bitsize */ | |
b34976b6 | 1811 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1812 | 0, /* bitpos */ |
1813 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 1814 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1815 | "R_PPC64_GOT_TPREL16_HA", /* name */ |
b34976b6 | 1816 | FALSE, /* partial_inplace */ |
d006db6c | 1817 | 0, /* src_mask */ |
411e1bfb | 1818 | 0xffff, /* dst_mask */ |
b34976b6 | 1819 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
1820 | |
1821 | /* GNU extension to record C++ vtable hierarchy. */ | |
1822 | HOWTO (R_PPC64_GNU_VTINHERIT, /* type */ | |
1823 | 0, /* rightshift */ | |
1824 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
1825 | 0, /* bitsize */ | |
b34976b6 | 1826 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1827 | 0, /* bitpos */ |
1828 | complain_overflow_dont, /* complain_on_overflow */ | |
1829 | NULL, /* special_function */ | |
1830 | "R_PPC64_GNU_VTINHERIT", /* name */ | |
b34976b6 | 1831 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1832 | 0, /* src_mask */ |
1833 | 0, /* dst_mask */ | |
b34976b6 | 1834 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
1835 | |
1836 | /* GNU extension to record C++ vtable member usage. */ | |
1837 | HOWTO (R_PPC64_GNU_VTENTRY, /* type */ | |
1838 | 0, /* rightshift */ | |
1839 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
1840 | 0, /* bitsize */ | |
b34976b6 | 1841 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1842 | 0, /* bitpos */ |
1843 | complain_overflow_dont, /* complain_on_overflow */ | |
1844 | NULL, /* special_function */ | |
1845 | "R_PPC64_GNU_VTENTRY", /* name */ | |
b34976b6 | 1846 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1847 | 0, /* src_mask */ |
1848 | 0, /* dst_mask */ | |
b34976b6 | 1849 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
1850 | }; |
1851 | ||
1852 | \f | |
1853 | /* Initialize the ppc64_elf_howto_table, so that linear accesses can | |
1854 | be done. */ | |
1855 | ||
1856 | static void | |
4ce794b7 | 1857 | ppc_howto_init (void) |
5bd4f169 AM |
1858 | { |
1859 | unsigned int i, type; | |
1860 | ||
1861 | for (i = 0; | |
1862 | i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]); | |
1863 | i++) | |
1864 | { | |
1865 | type = ppc64_elf_howto_raw[i].type; | |
1866 | BFD_ASSERT (type < (sizeof (ppc64_elf_howto_table) | |
1867 | / sizeof (ppc64_elf_howto_table[0]))); | |
1868 | ppc64_elf_howto_table[type] = &ppc64_elf_howto_raw[i]; | |
1869 | } | |
1870 | } | |
1871 | ||
1872 | static reloc_howto_type * | |
4ce794b7 AM |
1873 | ppc64_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, |
1874 | bfd_reloc_code_real_type code) | |
5bd4f169 | 1875 | { |
411e1bfb | 1876 | enum elf_ppc64_reloc_type r = R_PPC64_NONE; |
5bd4f169 AM |
1877 | |
1878 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) | |
1879 | /* Initialize howto table if needed. */ | |
1880 | ppc_howto_init (); | |
1881 | ||
4ce794b7 | 1882 | switch (code) |
5bd4f169 AM |
1883 | { |
1884 | default: | |
4ce794b7 | 1885 | return NULL; |
5bd4f169 | 1886 | |
411e1bfb AM |
1887 | case BFD_RELOC_NONE: r = R_PPC64_NONE; |
1888 | break; | |
1889 | case BFD_RELOC_32: r = R_PPC64_ADDR32; | |
1890 | break; | |
1891 | case BFD_RELOC_PPC_BA26: r = R_PPC64_ADDR24; | |
1892 | break; | |
1893 | case BFD_RELOC_16: r = R_PPC64_ADDR16; | |
1894 | break; | |
1895 | case BFD_RELOC_LO16: r = R_PPC64_ADDR16_LO; | |
1896 | break; | |
1897 | case BFD_RELOC_HI16: r = R_PPC64_ADDR16_HI; | |
1898 | break; | |
1899 | case BFD_RELOC_HI16_S: r = R_PPC64_ADDR16_HA; | |
5bd4f169 | 1900 | break; |
411e1bfb | 1901 | case BFD_RELOC_PPC_BA16: r = R_PPC64_ADDR14; |
5bd4f169 | 1902 | break; |
411e1bfb | 1903 | case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC64_ADDR14_BRTAKEN; |
5bd4f169 | 1904 | break; |
411e1bfb | 1905 | case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC64_ADDR14_BRNTAKEN; |
5bd4f169 | 1906 | break; |
411e1bfb | 1907 | case BFD_RELOC_PPC_B26: r = R_PPC64_REL24; |
5bd4f169 | 1908 | break; |
411e1bfb | 1909 | case BFD_RELOC_PPC_B16: r = R_PPC64_REL14; |
5bd4f169 | 1910 | break; |
411e1bfb | 1911 | case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC64_REL14_BRTAKEN; |
5bd4f169 | 1912 | break; |
411e1bfb | 1913 | case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC64_REL14_BRNTAKEN; |
5bd4f169 | 1914 | break; |
411e1bfb | 1915 | case BFD_RELOC_16_GOTOFF: r = R_PPC64_GOT16; |
5bd4f169 | 1916 | break; |
411e1bfb | 1917 | case BFD_RELOC_LO16_GOTOFF: r = R_PPC64_GOT16_LO; |
5bd4f169 | 1918 | break; |
411e1bfb | 1919 | case BFD_RELOC_HI16_GOTOFF: r = R_PPC64_GOT16_HI; |
5bd4f169 | 1920 | break; |
411e1bfb | 1921 | case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC64_GOT16_HA; |
5bd4f169 | 1922 | break; |
411e1bfb | 1923 | case BFD_RELOC_PPC_COPY: r = R_PPC64_COPY; |
5bd4f169 | 1924 | break; |
411e1bfb | 1925 | case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC64_GLOB_DAT; |
5bd4f169 | 1926 | break; |
411e1bfb | 1927 | case BFD_RELOC_32_PCREL: r = R_PPC64_REL32; |
5bd4f169 | 1928 | break; |
411e1bfb | 1929 | case BFD_RELOC_32_PLTOFF: r = R_PPC64_PLT32; |
5bd4f169 | 1930 | break; |
411e1bfb | 1931 | case BFD_RELOC_32_PLT_PCREL: r = R_PPC64_PLTREL32; |
5bd4f169 | 1932 | break; |
411e1bfb | 1933 | case BFD_RELOC_LO16_PLTOFF: r = R_PPC64_PLT16_LO; |
5bd4f169 | 1934 | break; |
411e1bfb | 1935 | case BFD_RELOC_HI16_PLTOFF: r = R_PPC64_PLT16_HI; |
5bd4f169 | 1936 | break; |
411e1bfb | 1937 | case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC64_PLT16_HA; |
5bd4f169 | 1938 | break; |
411e1bfb | 1939 | case BFD_RELOC_16_BASEREL: r = R_PPC64_SECTOFF; |
5bd4f169 | 1940 | break; |
411e1bfb | 1941 | case BFD_RELOC_LO16_BASEREL: r = R_PPC64_SECTOFF_LO; |
5bd4f169 | 1942 | break; |
411e1bfb | 1943 | case BFD_RELOC_HI16_BASEREL: r = R_PPC64_SECTOFF_HI; |
5bd4f169 | 1944 | break; |
411e1bfb | 1945 | case BFD_RELOC_HI16_S_BASEREL: r = R_PPC64_SECTOFF_HA; |
5bd4f169 | 1946 | break; |
411e1bfb | 1947 | case BFD_RELOC_CTOR: r = R_PPC64_ADDR64; |
5bd4f169 | 1948 | break; |
411e1bfb | 1949 | case BFD_RELOC_64: r = R_PPC64_ADDR64; |
5bd4f169 | 1950 | break; |
411e1bfb | 1951 | case BFD_RELOC_PPC64_HIGHER: r = R_PPC64_ADDR16_HIGHER; |
5bd4f169 | 1952 | break; |
411e1bfb | 1953 | case BFD_RELOC_PPC64_HIGHER_S: r = R_PPC64_ADDR16_HIGHERA; |
5bd4f169 | 1954 | break; |
411e1bfb | 1955 | case BFD_RELOC_PPC64_HIGHEST: r = R_PPC64_ADDR16_HIGHEST; |
5bd4f169 | 1956 | break; |
411e1bfb | 1957 | case BFD_RELOC_PPC64_HIGHEST_S: r = R_PPC64_ADDR16_HIGHESTA; |
5bd4f169 | 1958 | break; |
411e1bfb | 1959 | case BFD_RELOC_64_PCREL: r = R_PPC64_REL64; |
5bd4f169 | 1960 | break; |
411e1bfb | 1961 | case BFD_RELOC_64_PLTOFF: r = R_PPC64_PLT64; |
5bd4f169 | 1962 | break; |
411e1bfb | 1963 | case BFD_RELOC_64_PLT_PCREL: r = R_PPC64_PLTREL64; |
5bd4f169 | 1964 | break; |
411e1bfb | 1965 | case BFD_RELOC_PPC_TOC16: r = R_PPC64_TOC16; |
5bd4f169 | 1966 | break; |
411e1bfb | 1967 | case BFD_RELOC_PPC64_TOC16_LO: r = R_PPC64_TOC16_LO; |
5bd4f169 | 1968 | break; |
411e1bfb | 1969 | case BFD_RELOC_PPC64_TOC16_HI: r = R_PPC64_TOC16_HI; |
5bd4f169 | 1970 | break; |
411e1bfb | 1971 | case BFD_RELOC_PPC64_TOC16_HA: r = R_PPC64_TOC16_HA; |
5bd4f169 | 1972 | break; |
411e1bfb | 1973 | case BFD_RELOC_PPC64_TOC: r = R_PPC64_TOC; |
5bd4f169 | 1974 | break; |
411e1bfb | 1975 | case BFD_RELOC_PPC64_PLTGOT16: r = R_PPC64_PLTGOT16; |
5bd4f169 | 1976 | break; |
411e1bfb | 1977 | case BFD_RELOC_PPC64_PLTGOT16_LO: r = R_PPC64_PLTGOT16_LO; |
5bd4f169 | 1978 | break; |
411e1bfb | 1979 | case BFD_RELOC_PPC64_PLTGOT16_HI: r = R_PPC64_PLTGOT16_HI; |
5bd4f169 | 1980 | break; |
411e1bfb | 1981 | case BFD_RELOC_PPC64_PLTGOT16_HA: r = R_PPC64_PLTGOT16_HA; |
5bd4f169 | 1982 | break; |
411e1bfb | 1983 | case BFD_RELOC_PPC64_ADDR16_DS: r = R_PPC64_ADDR16_DS; |
5bd4f169 | 1984 | break; |
411e1bfb | 1985 | case BFD_RELOC_PPC64_ADDR16_LO_DS: r = R_PPC64_ADDR16_LO_DS; |
5bd4f169 | 1986 | break; |
411e1bfb | 1987 | case BFD_RELOC_PPC64_GOT16_DS: r = R_PPC64_GOT16_DS; |
5bd4f169 | 1988 | break; |
411e1bfb | 1989 | case BFD_RELOC_PPC64_GOT16_LO_DS: r = R_PPC64_GOT16_LO_DS; |
5bd4f169 | 1990 | break; |
411e1bfb | 1991 | case BFD_RELOC_PPC64_PLT16_LO_DS: r = R_PPC64_PLT16_LO_DS; |
5bd4f169 | 1992 | break; |
411e1bfb | 1993 | case BFD_RELOC_PPC64_SECTOFF_DS: r = R_PPC64_SECTOFF_DS; |
5bd4f169 | 1994 | break; |
411e1bfb | 1995 | case BFD_RELOC_PPC64_SECTOFF_LO_DS: r = R_PPC64_SECTOFF_LO_DS; |
5bd4f169 | 1996 | break; |
411e1bfb | 1997 | case BFD_RELOC_PPC64_TOC16_DS: r = R_PPC64_TOC16_DS; |
5bd4f169 | 1998 | break; |
411e1bfb | 1999 | case BFD_RELOC_PPC64_TOC16_LO_DS: r = R_PPC64_TOC16_LO_DS; |
5bd4f169 | 2000 | break; |
411e1bfb | 2001 | case BFD_RELOC_PPC64_PLTGOT16_DS: r = R_PPC64_PLTGOT16_DS; |
5bd4f169 | 2002 | break; |
411e1bfb | 2003 | case BFD_RELOC_PPC64_PLTGOT16_LO_DS: r = R_PPC64_PLTGOT16_LO_DS; |
5bd4f169 | 2004 | break; |
411e1bfb | 2005 | case BFD_RELOC_PPC_TLS: r = R_PPC64_TLS; |
5bd4f169 | 2006 | break; |
411e1bfb | 2007 | case BFD_RELOC_PPC_DTPMOD: r = R_PPC64_DTPMOD64; |
5bd4f169 | 2008 | break; |
411e1bfb | 2009 | case BFD_RELOC_PPC_TPREL16: r = R_PPC64_TPREL16; |
5bd4f169 | 2010 | break; |
411e1bfb | 2011 | case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC64_TPREL16_LO; |
5bd4f169 | 2012 | break; |
411e1bfb | 2013 | case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC64_TPREL16_HI; |
5bd4f169 | 2014 | break; |
411e1bfb | 2015 | case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC64_TPREL16_HA; |
5bd4f169 | 2016 | break; |
411e1bfb | 2017 | case BFD_RELOC_PPC_TPREL: r = R_PPC64_TPREL64; |
5bd4f169 | 2018 | break; |
411e1bfb AM |
2019 | case BFD_RELOC_PPC_DTPREL16: r = R_PPC64_DTPREL16; |
2020 | break; | |
2021 | case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC64_DTPREL16_LO; | |
2022 | break; | |
2023 | case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC64_DTPREL16_HI; | |
2024 | break; | |
2025 | case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC64_DTPREL16_HA; | |
2026 | break; | |
2027 | case BFD_RELOC_PPC_DTPREL: r = R_PPC64_DTPREL64; | |
2028 | break; | |
2029 | case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC64_GOT_TLSGD16; | |
2030 | break; | |
2031 | case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC64_GOT_TLSGD16_LO; | |
2032 | break; | |
2033 | case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC64_GOT_TLSGD16_HI; | |
2034 | break; | |
2035 | case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC64_GOT_TLSGD16_HA; | |
2036 | break; | |
2037 | case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC64_GOT_TLSLD16; | |
2038 | break; | |
2039 | case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC64_GOT_TLSLD16_LO; | |
2040 | break; | |
2041 | case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC64_GOT_TLSLD16_HI; | |
2042 | break; | |
2043 | case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC64_GOT_TLSLD16_HA; | |
2044 | break; | |
2045 | case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC64_GOT_TPREL16_DS; | |
2046 | break; | |
2047 | case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC64_GOT_TPREL16_LO_DS; | |
2048 | break; | |
2049 | case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC64_GOT_TPREL16_HI; | |
2050 | break; | |
2051 | case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC64_GOT_TPREL16_HA; | |
2052 | break; | |
2053 | case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC64_GOT_DTPREL16_DS; | |
2054 | break; | |
2055 | case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC64_GOT_DTPREL16_LO_DS; | |
2056 | break; | |
2057 | case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC64_GOT_DTPREL16_HI; | |
2058 | break; | |
2059 | case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC64_GOT_DTPREL16_HA; | |
2060 | break; | |
2061 | case BFD_RELOC_PPC64_TPREL16_DS: r = R_PPC64_TPREL16_DS; | |
2062 | break; | |
2063 | case BFD_RELOC_PPC64_TPREL16_LO_DS: r = R_PPC64_TPREL16_LO_DS; | |
2064 | break; | |
2065 | case BFD_RELOC_PPC64_TPREL16_HIGHER: r = R_PPC64_TPREL16_HIGHER; | |
2066 | break; | |
2067 | case BFD_RELOC_PPC64_TPREL16_HIGHERA: r = R_PPC64_TPREL16_HIGHERA; | |
2068 | break; | |
2069 | case BFD_RELOC_PPC64_TPREL16_HIGHEST: r = R_PPC64_TPREL16_HIGHEST; | |
2070 | break; | |
2071 | case BFD_RELOC_PPC64_TPREL16_HIGHESTA: r = R_PPC64_TPREL16_HIGHESTA; | |
2072 | break; | |
2073 | case BFD_RELOC_PPC64_DTPREL16_DS: r = R_PPC64_DTPREL16_DS; | |
2074 | break; | |
2075 | case BFD_RELOC_PPC64_DTPREL16_LO_DS: r = R_PPC64_DTPREL16_LO_DS; | |
2076 | break; | |
2077 | case BFD_RELOC_PPC64_DTPREL16_HIGHER: r = R_PPC64_DTPREL16_HIGHER; | |
2078 | break; | |
2079 | case BFD_RELOC_PPC64_DTPREL16_HIGHERA: r = R_PPC64_DTPREL16_HIGHERA; | |
2080 | break; | |
2081 | case BFD_RELOC_PPC64_DTPREL16_HIGHEST: r = R_PPC64_DTPREL16_HIGHEST; | |
2082 | break; | |
2083 | case BFD_RELOC_PPC64_DTPREL16_HIGHESTA: r = R_PPC64_DTPREL16_HIGHESTA; | |
2084 | break; | |
2085 | case BFD_RELOC_VTABLE_INHERIT: r = R_PPC64_GNU_VTINHERIT; | |
2086 | break; | |
2087 | case BFD_RELOC_VTABLE_ENTRY: r = R_PPC64_GNU_VTENTRY; | |
5bd4f169 AM |
2088 | break; |
2089 | } | |
2090 | ||
4ce794b7 | 2091 | return ppc64_elf_howto_table[r]; |
5bd4f169 AM |
2092 | }; |
2093 | ||
2094 | /* Set the howto pointer for a PowerPC ELF reloc. */ | |
2095 | ||
2096 | static void | |
4ce794b7 AM |
2097 | ppc64_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr, |
2098 | Elf_Internal_Rela *dst) | |
5bd4f169 | 2099 | { |
65f38f15 AM |
2100 | unsigned int type; |
2101 | ||
ef60b7ff | 2102 | /* Initialize howto table if needed. */ |
5bd4f169 | 2103 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) |
5bd4f169 AM |
2104 | ppc_howto_init (); |
2105 | ||
65f38f15 AM |
2106 | type = ELF64_R_TYPE (dst->r_info); |
2107 | BFD_ASSERT (type < (sizeof (ppc64_elf_howto_table) | |
2108 | / sizeof (ppc64_elf_howto_table[0]))); | |
2109 | cache_ptr->howto = ppc64_elf_howto_table[type]; | |
5bd4f169 AM |
2110 | } |
2111 | ||
04c9666a | 2112 | /* Handle the R_PPC64_ADDR16_HA and similar relocs. */ |
5bd4f169 AM |
2113 | |
2114 | static bfd_reloc_status_type | |
4ce794b7 AM |
2115 | ppc64_elf_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2116 | void *data, asection *input_section, | |
2117 | bfd *output_bfd, char **error_message) | |
5bd4f169 | 2118 | { |
805fc799 AM |
2119 | /* If this is a relocatable link (output_bfd test tells us), just |
2120 | call the generic function. Any adjustment will be done at final | |
2121 | link time. */ | |
2122 | if (output_bfd != NULL) | |
cedb70c5 | 2123 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2124 | input_section, output_bfd, error_message); |
2125 | ||
2126 | /* Adjust the addend for sign extension of the low 16 bits. | |
2127 | We won't actually be using the low 16 bits, so trashing them | |
2128 | doesn't matter. */ | |
2129 | reloc_entry->addend += 0x8000; | |
2130 | return bfd_reloc_continue; | |
2131 | } | |
5bd4f169 | 2132 | |
805fc799 | 2133 | static bfd_reloc_status_type |
4ce794b7 AM |
2134 | ppc64_elf_brtaken_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2135 | void *data, asection *input_section, | |
2136 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2137 | { |
2138 | long insn; | |
04c9666a | 2139 | enum elf_ppc64_reloc_type r_type; |
805fc799 AM |
2140 | bfd_size_type octets; |
2141 | /* Disabled until we sort out how ld should choose 'y' vs 'at'. */ | |
b34976b6 | 2142 | bfd_boolean is_power4 = FALSE; |
805fc799 AM |
2143 | |
2144 | /* If this is a relocatable link (output_bfd test tells us), just | |
2145 | call the generic function. Any adjustment will be done at final | |
2146 | link time. */ | |
5bd4f169 | 2147 | if (output_bfd != NULL) |
cedb70c5 | 2148 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2149 | input_section, output_bfd, error_message); |
2150 | ||
2151 | octets = reloc_entry->address * bfd_octets_per_byte (abfd); | |
2152 | insn = bfd_get_32 (abfd, (bfd_byte *) data + octets); | |
2153 | insn &= ~(0x01 << 21); | |
4ce794b7 | 2154 | r_type = reloc_entry->howto->type; |
805fc799 AM |
2155 | if (r_type == R_PPC64_ADDR14_BRTAKEN |
2156 | || r_type == R_PPC64_REL14_BRTAKEN) | |
cedb70c5 | 2157 | insn |= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */ |
805fc799 AM |
2158 | |
2159 | if (is_power4) | |
5bd4f169 | 2160 | { |
805fc799 AM |
2161 | /* Set 'a' bit. This is 0b00010 in BO field for branch |
2162 | on CR(BI) insns (BO == 001at or 011at), and 0b01000 | |
2163 | for branch on CTR insns (BO == 1a00t or 1a01t). */ | |
2164 | if ((insn & (0x14 << 21)) == (0x04 << 21)) | |
2165 | insn |= 0x02 << 21; | |
2166 | else if ((insn & (0x14 << 21)) == (0x10 << 21)) | |
2167 | insn |= 0x08 << 21; | |
2168 | else | |
2169 | return bfd_reloc_continue; | |
5bd4f169 | 2170 | } |
805fc799 AM |
2171 | else |
2172 | { | |
2173 | bfd_vma target = 0; | |
2174 | bfd_vma from; | |
5bd4f169 | 2175 | |
805fc799 AM |
2176 | if (!bfd_is_com_section (symbol->section)) |
2177 | target = symbol->value; | |
2178 | target += symbol->section->output_section->vma; | |
2179 | target += symbol->section->output_offset; | |
2180 | target += reloc_entry->addend; | |
5bd4f169 | 2181 | |
805fc799 AM |
2182 | from = (reloc_entry->address |
2183 | + input_section->output_offset | |
2184 | + input_section->output_section->vma); | |
5bd4f169 | 2185 | |
805fc799 AM |
2186 | /* Invert 'y' bit if not the default. */ |
2187 | if ((bfd_signed_vma) (target - from) < 0) | |
2188 | insn ^= 0x01 << 21; | |
2189 | } | |
4ce794b7 | 2190 | bfd_put_32 (abfd, insn, (bfd_byte *) data + octets); |
805fc799 AM |
2191 | return bfd_reloc_continue; |
2192 | } | |
5bd4f169 | 2193 | |
805fc799 | 2194 | static bfd_reloc_status_type |
4ce794b7 AM |
2195 | ppc64_elf_sectoff_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2196 | void *data, asection *input_section, | |
2197 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2198 | { |
2199 | /* If this is a relocatable link (output_bfd test tells us), just | |
2200 | call the generic function. Any adjustment will be done at final | |
2201 | link time. */ | |
2202 | if (output_bfd != NULL) | |
cedb70c5 | 2203 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 | 2204 | input_section, output_bfd, error_message); |
5bd4f169 | 2205 | |
805fc799 AM |
2206 | /* Subtract the symbol section base address. */ |
2207 | reloc_entry->addend -= symbol->section->output_section->vma; | |
5bd4f169 AM |
2208 | return bfd_reloc_continue; |
2209 | } | |
2210 | ||
805fc799 | 2211 | static bfd_reloc_status_type |
4ce794b7 AM |
2212 | ppc64_elf_sectoff_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2213 | void *data, asection *input_section, | |
2214 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2215 | { |
2216 | /* If this is a relocatable link (output_bfd test tells us), just | |
2217 | call the generic function. Any adjustment will be done at final | |
2218 | link time. */ | |
2219 | if (output_bfd != NULL) | |
cedb70c5 | 2220 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2221 | input_section, output_bfd, error_message); |
2222 | ||
2223 | /* Subtract the symbol section base address. */ | |
2224 | reloc_entry->addend -= symbol->section->output_section->vma; | |
2225 | ||
2226 | /* Adjust the addend for sign extension of the low 16 bits. */ | |
2227 | reloc_entry->addend += 0x8000; | |
2228 | return bfd_reloc_continue; | |
2229 | } | |
2230 | ||
2231 | static bfd_reloc_status_type | |
4ce794b7 AM |
2232 | ppc64_elf_toc_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2233 | void *data, asection *input_section, | |
2234 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2235 | { |
2236 | bfd_vma TOCstart; | |
2237 | ||
2238 | /* If this is a relocatable link (output_bfd test tells us), just | |
2239 | call the generic function. Any adjustment will be done at final | |
2240 | link time. */ | |
2241 | if (output_bfd != NULL) | |
cedb70c5 | 2242 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2243 | input_section, output_bfd, error_message); |
2244 | ||
2245 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
2246 | if (TOCstart == 0) | |
2247 | TOCstart = ppc64_elf_toc (input_section->output_section->owner); | |
2248 | ||
2249 | /* Subtract the TOC base address. */ | |
2250 | reloc_entry->addend -= TOCstart + TOC_BASE_OFF; | |
2251 | return bfd_reloc_continue; | |
2252 | } | |
2253 | ||
2254 | static bfd_reloc_status_type | |
4ce794b7 AM |
2255 | ppc64_elf_toc_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2256 | void *data, asection *input_section, | |
2257 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2258 | { |
2259 | bfd_vma TOCstart; | |
2260 | ||
2261 | /* If this is a relocatable link (output_bfd test tells us), just | |
2262 | call the generic function. Any adjustment will be done at final | |
2263 | link time. */ | |
2264 | if (output_bfd != NULL) | |
cedb70c5 | 2265 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2266 | input_section, output_bfd, error_message); |
2267 | ||
2268 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
2269 | if (TOCstart == 0) | |
2270 | TOCstart = ppc64_elf_toc (input_section->output_section->owner); | |
2271 | ||
2272 | /* Subtract the TOC base address. */ | |
2273 | reloc_entry->addend -= TOCstart + TOC_BASE_OFF; | |
2274 | ||
2275 | /* Adjust the addend for sign extension of the low 16 bits. */ | |
2276 | reloc_entry->addend += 0x8000; | |
2277 | return bfd_reloc_continue; | |
2278 | } | |
2279 | ||
2280 | static bfd_reloc_status_type | |
4ce794b7 AM |
2281 | ppc64_elf_toc64_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2282 | void *data, asection *input_section, | |
2283 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2284 | { |
2285 | bfd_vma TOCstart; | |
2286 | bfd_size_type octets; | |
2287 | ||
2288 | /* If this is a relocatable link (output_bfd test tells us), just | |
2289 | call the generic function. Any adjustment will be done at final | |
2290 | link time. */ | |
2291 | if (output_bfd != NULL) | |
cedb70c5 | 2292 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2293 | input_section, output_bfd, error_message); |
2294 | ||
2295 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
2296 | if (TOCstart == 0) | |
2297 | TOCstart = ppc64_elf_toc (input_section->output_section->owner); | |
2298 | ||
2299 | octets = reloc_entry->address * bfd_octets_per_byte (abfd); | |
2300 | bfd_put_64 (abfd, TOCstart + TOC_BASE_OFF, (bfd_byte *) data + octets); | |
2301 | return bfd_reloc_ok; | |
2302 | } | |
2303 | ||
2304 | static bfd_reloc_status_type | |
4ce794b7 AM |
2305 | ppc64_elf_unhandled_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2306 | void *data, asection *input_section, | |
2307 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2308 | { |
2309 | /* If this is a relocatable link (output_bfd test tells us), just | |
2310 | call the generic function. Any adjustment will be done at final | |
2311 | link time. */ | |
2312 | if (output_bfd != NULL) | |
cedb70c5 | 2313 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2314 | input_section, output_bfd, error_message); |
2315 | ||
2316 | if (error_message != NULL) | |
2317 | { | |
2318 | static char buf[60]; | |
2319 | sprintf (buf, "generic linker can't handle %s", | |
2320 | reloc_entry->howto->name); | |
2321 | *error_message = buf; | |
2322 | } | |
2323 | return bfd_reloc_dangerous; | |
2324 | } | |
2325 | ||
e717da7e AM |
2326 | struct ppc64_elf_obj_tdata |
2327 | { | |
2328 | struct elf_obj_tdata elf; | |
2329 | ||
2330 | /* Shortcuts to dynamic linker sections. */ | |
2331 | asection *got; | |
2332 | asection *relgot; | |
2333 | ||
2334 | /* TLS local dynamic got entry handling. Suppose for multiple GOT | |
2335 | sections means we potentially need one of these for each input bfd. */ | |
2336 | union { | |
2337 | bfd_signed_vma refcount; | |
2338 | bfd_vma offset; | |
2339 | } tlsld_got; | |
2340 | }; | |
2341 | ||
2342 | #define ppc64_elf_tdata(bfd) \ | |
2343 | ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any) | |
2344 | ||
2345 | #define ppc64_tlsld_got(bfd) \ | |
2346 | (&ppc64_elf_tdata (bfd)->tlsld_got) | |
2347 | ||
2348 | /* Override the generic function because we store some extras. */ | |
2349 | ||
2350 | static bfd_boolean | |
2351 | ppc64_elf_mkobject (bfd *abfd) | |
2352 | { | |
2353 | bfd_size_type amt = sizeof (struct ppc64_elf_obj_tdata); | |
2354 | abfd->tdata.any = bfd_zalloc (abfd, amt); | |
2355 | if (abfd->tdata.any == NULL) | |
2356 | return FALSE; | |
2357 | return TRUE; | |
2358 | } | |
2359 | ||
feee612b AM |
2360 | /* Fix bad default arch selected for a 64 bit input bfd when the |
2361 | default is 32 bit. */ | |
2362 | ||
b34976b6 | 2363 | static bfd_boolean |
4ce794b7 | 2364 | ppc64_elf_object_p (bfd *abfd) |
feee612b AM |
2365 | { |
2366 | if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 32) | |
2367 | { | |
2368 | Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd); | |
2369 | ||
2370 | if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS64) | |
2371 | { | |
2372 | /* Relies on arch after 32 bit default being 64 bit default. */ | |
2373 | abfd->arch_info = abfd->arch_info->next; | |
2374 | BFD_ASSERT (abfd->arch_info->bits_per_word == 64); | |
2375 | } | |
2376 | } | |
b34976b6 | 2377 | return TRUE; |
feee612b AM |
2378 | } |
2379 | ||
d37c89e5 AM |
2380 | /* Support for core dump NOTE sections. */ |
2381 | ||
2382 | static bfd_boolean | |
2383 | ppc64_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) | |
2384 | { | |
eea6121a | 2385 | size_t offset, size; |
d37c89e5 AM |
2386 | |
2387 | if (note->descsz != 504) | |
2388 | return FALSE; | |
2389 | ||
2390 | /* pr_cursig */ | |
2391 | elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12); | |
2392 | ||
2393 | /* pr_pid */ | |
2394 | elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 32); | |
2395 | ||
2396 | /* pr_reg */ | |
2397 | offset = 112; | |
eea6121a | 2398 | size = 384; |
d37c89e5 AM |
2399 | |
2400 | /* Make a ".reg/999" section. */ | |
2401 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", | |
eea6121a | 2402 | size, note->descpos + offset); |
d37c89e5 AM |
2403 | } |
2404 | ||
2405 | static bfd_boolean | |
2406 | ppc64_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) | |
2407 | { | |
2408 | if (note->descsz != 136) | |
2409 | return FALSE; | |
2410 | ||
2411 | elf_tdata (abfd)->core_program | |
2412 | = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16); | |
2413 | elf_tdata (abfd)->core_command | |
2414 | = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80); | |
2415 | ||
2416 | return TRUE; | |
2417 | } | |
2418 | ||
5bd4f169 AM |
2419 | /* Merge backend specific data from an object file to the output |
2420 | object file when linking. */ | |
2f6d9989 | 2421 | |
b34976b6 | 2422 | static bfd_boolean |
4ce794b7 | 2423 | ppc64_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd) |
5bd4f169 | 2424 | { |
5bd4f169 AM |
2425 | /* Check if we have the same endianess. */ |
2426 | if (ibfd->xvec->byteorder != obfd->xvec->byteorder | |
87e226ce | 2427 | && ibfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN |
5bd4f169 AM |
2428 | && obfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN) |
2429 | { | |
2430 | const char *msg; | |
2431 | ||
2432 | if (bfd_big_endian (ibfd)) | |
4ce794b7 AM |
2433 | msg = _("%s: compiled for a big endian system " |
2434 | "and target is little endian"); | |
5bd4f169 | 2435 | else |
4ce794b7 AM |
2436 | msg = _("%s: compiled for a little endian system " |
2437 | "and target is big endian"); | |
5bd4f169 | 2438 | |
8f615d07 | 2439 | (*_bfd_error_handler) (msg, bfd_archive_filename (ibfd)); |
5bd4f169 AM |
2440 | |
2441 | bfd_set_error (bfd_error_wrong_format); | |
b34976b6 | 2442 | return FALSE; |
5bd4f169 AM |
2443 | } |
2444 | ||
b34976b6 | 2445 | return TRUE; |
5bd4f169 | 2446 | } |
f0abc2a1 | 2447 | |
5d35169e AM |
2448 | /* Add extra PPC sections. */ |
2449 | ||
2450 | static struct bfd_elf_special_section const ppc64_elf_special_sections[]= | |
2451 | { | |
7dcb9820 AM |
2452 | { ".sdata", 6, -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, |
2453 | { ".sbss", 5, -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, | |
2454 | { ".plt", 4, 0, SHT_NOBITS, 0 }, | |
2455 | { ".toc", 4, 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
2456 | { ".toc1", 5, 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
2457 | { ".tocbss", 7, 0, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, | |
2458 | { NULL, 0, 0, 0, 0 } | |
5d35169e AM |
2459 | }; |
2460 | ||
f0abc2a1 AM |
2461 | struct _ppc64_elf_section_data |
2462 | { | |
2463 | struct bfd_elf_section_data elf; | |
411e1bfb AM |
2464 | |
2465 | /* An array with one entry for each opd function descriptor. */ | |
f0abc2a1 AM |
2466 | union |
2467 | { | |
411e1bfb | 2468 | /* Points to the function code section for local opd entries. */ |
f0abc2a1 | 2469 | asection **func_sec; |
411e1bfb | 2470 | /* After editing .opd, adjust references to opd local syms. */ |
f0abc2a1 AM |
2471 | long *adjust; |
2472 | } opd; | |
411e1bfb AM |
2473 | |
2474 | /* An array for toc sections, indexed by offset/8. | |
2475 | Specifies the relocation symbol index used at a given toc offset. */ | |
2476 | unsigned *t_symndx; | |
f0abc2a1 AM |
2477 | }; |
2478 | ||
2479 | #define ppc64_elf_section_data(sec) \ | |
411e1bfb | 2480 | ((struct _ppc64_elf_section_data *) elf_section_data (sec)) |
f0abc2a1 AM |
2481 | |
2482 | static bfd_boolean | |
4ce794b7 | 2483 | ppc64_elf_new_section_hook (bfd *abfd, asection *sec) |
f0abc2a1 AM |
2484 | { |
2485 | struct _ppc64_elf_section_data *sdata; | |
2486 | bfd_size_type amt = sizeof (*sdata); | |
2487 | ||
4ce794b7 | 2488 | sdata = bfd_zalloc (abfd, amt); |
f0abc2a1 AM |
2489 | if (sdata == NULL) |
2490 | return FALSE; | |
4ce794b7 | 2491 | sec->used_by_bfd = sdata; |
f0abc2a1 AM |
2492 | |
2493 | return _bfd_elf_new_section_hook (abfd, sec); | |
2494 | } | |
4025353c AM |
2495 | |
2496 | static void * | |
2497 | get_opd_info (asection * sec) | |
2498 | { | |
2499 | if (sec != NULL | |
2500 | && ppc64_elf_section_data (sec) != NULL | |
2501 | && ppc64_elf_section_data (sec)->opd.adjust != NULL) | |
2502 | return ppc64_elf_section_data (sec)->opd.adjust; | |
2503 | return NULL; | |
2504 | } | |
5bd4f169 | 2505 | \f |
65f38f15 AM |
2506 | /* The following functions are specific to the ELF linker, while |
2507 | functions above are used generally. Those named ppc64_elf_* are | |
2508 | called by the main ELF linker code. They appear in this file more | |
2509 | or less in the order in which they are called. eg. | |
2510 | ppc64_elf_check_relocs is called early in the link process, | |
2511 | ppc64_elf_finish_dynamic_sections is one of the last functions | |
e86ce104 AM |
2512 | called. |
2513 | ||
2514 | PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that | |
2515 | functions have both a function code symbol and a function descriptor | |
2516 | symbol. A call to foo in a relocatable object file looks like: | |
2517 | ||
2518 | . .text | |
2519 | . x: | |
2520 | . bl .foo | |
2521 | . nop | |
2522 | ||
2523 | The function definition in another object file might be: | |
2524 | ||
2525 | . .section .opd | |
2526 | . foo: .quad .foo | |
2527 | . .quad .TOC.@tocbase | |
2528 | . .quad 0 | |
2529 | . | |
2530 | . .text | |
2531 | . .foo: blr | |
2532 | ||
2533 | When the linker resolves the call during a static link, the branch | |
2534 | unsurprisingly just goes to .foo and the .opd information is unused. | |
2535 | If the function definition is in a shared library, things are a little | |
2536 | different: The call goes via a plt call stub, the opd information gets | |
2537 | copied to the plt, and the linker patches the nop. | |
2538 | ||
2539 | . x: | |
2540 | . bl .foo_stub | |
2541 | . ld 2,40(1) | |
2542 | . | |
2543 | . | |
2544 | . .foo_stub: | |
2545 | . addis 12,2,Lfoo@toc@ha # in practice, the call stub | |
411e1bfb | 2546 | . addi 12,12,Lfoo@toc@l # is slightly optimized, but |
e86ce104 AM |
2547 | . std 2,40(1) # this is the general idea |
2548 | . ld 11,0(12) | |
2549 | . ld 2,8(12) | |
2550 | . mtctr 11 | |
2551 | . ld 11,16(12) | |
2552 | . bctr | |
2553 | . | |
2554 | . .section .plt | |
2555 | . Lfoo: reloc (R_PPC64_JMP_SLOT, foo) | |
2556 | ||
2557 | The "reloc ()" notation is supposed to indicate that the linker emits | |
2558 | an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd | |
2559 | copying. | |
2560 | ||
2561 | What are the difficulties here? Well, firstly, the relocations | |
2562 | examined by the linker in check_relocs are against the function code | |
2563 | sym .foo, while the dynamic relocation in the plt is emitted against | |
2564 | the function descriptor symbol, foo. Somewhere along the line, we need | |
2565 | to carefully copy dynamic link information from one symbol to the other. | |
2566 | Secondly, the generic part of the elf linker will make .foo a dynamic | |
2567 | symbol as is normal for most other backends. We need foo dynamic | |
2568 | instead, at least for an application final link. However, when | |
2569 | creating a shared library containing foo, we need to have both symbols | |
2570 | dynamic so that references to .foo are satisfied during the early | |
2571 | stages of linking. Otherwise the linker might decide to pull in a | |
41bd81ab | 2572 | definition from some other object, eg. a static library. */ |
65f38f15 AM |
2573 | |
2574 | /* The linker needs to keep track of the number of relocs that it | |
2575 | decides to copy as dynamic relocs in check_relocs for each symbol. | |
2576 | This is so that it can later discard them if they are found to be | |
2577 | unnecessary. We store the information in a field extending the | |
2578 | regular ELF linker hash table. */ | |
2579 | ||
2580 | struct ppc_dyn_relocs | |
2581 | { | |
2582 | struct ppc_dyn_relocs *next; | |
2583 | ||
2584 | /* The input section of the reloc. */ | |
2585 | asection *sec; | |
2586 | ||
2587 | /* Total number of relocs copied for the input section. */ | |
2588 | bfd_size_type count; | |
2589 | ||
2590 | /* Number of pc-relative relocs copied for the input section. */ | |
2591 | bfd_size_type pc_count; | |
2592 | }; | |
2593 | ||
411e1bfb AM |
2594 | /* Track GOT entries needed for a given symbol. We might need more |
2595 | than one got entry per symbol. */ | |
2596 | struct got_entry | |
2597 | { | |
2598 | struct got_entry *next; | |
2599 | ||
e7b938ca | 2600 | /* The symbol addend that we'll be placing in the GOT. */ |
411e1bfb AM |
2601 | bfd_vma addend; |
2602 | ||
e717da7e AM |
2603 | /* Unlike other ELF targets, we use separate GOT entries for the same |
2604 | symbol referenced from different input files. This is to support | |
2605 | automatic multiple TOC/GOT sections, where the TOC base can vary | |
2606 | from one input file to another. | |
2607 | ||
2608 | Point to the BFD owning this GOT entry. */ | |
2609 | bfd *owner; | |
2610 | ||
2611 | /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD, | |
2612 | TLS_TPREL or TLS_DTPREL for tls entries. */ | |
2613 | char tls_type; | |
2614 | ||
e7b938ca | 2615 | /* Reference count until size_dynamic_sections, GOT offset thereafter. */ |
411e1bfb AM |
2616 | union |
2617 | { | |
2618 | bfd_signed_vma refcount; | |
2619 | bfd_vma offset; | |
2620 | } got; | |
411e1bfb AM |
2621 | }; |
2622 | ||
2623 | /* The same for PLT. */ | |
2624 | struct plt_entry | |
2625 | { | |
2626 | struct plt_entry *next; | |
2627 | ||
2628 | bfd_vma addend; | |
2629 | ||
2630 | union | |
2631 | { | |
2632 | bfd_signed_vma refcount; | |
2633 | bfd_vma offset; | |
2634 | } plt; | |
2635 | }; | |
2636 | ||
65f38f15 | 2637 | /* Of those relocs that might be copied as dynamic relocs, this macro |
58ac9f71 AM |
2638 | selects those that must be copied when linking a shared library, |
2639 | even when the symbol is local. */ | |
65f38f15 | 2640 | |
411e1bfb | 2641 | #define MUST_BE_DYN_RELOC(RTYPE) \ |
805fc799 AM |
2642 | ((RTYPE) != R_PPC64_REL32 \ |
2643 | && (RTYPE) != R_PPC64_REL64 \ | |
04c9666a | 2644 | && (RTYPE) != R_PPC64_REL30) |
65f38f15 | 2645 | |
f4656909 AM |
2646 | /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid |
2647 | copying dynamic variables from a shared lib into an app's dynbss | |
2648 | section, and instead use a dynamic relocation to point into the | |
5d35169e AM |
2649 | shared lib. With code that gcc generates, it's vital that this be |
2650 | enabled; In the PowerPC64 ABI, the address of a function is actually | |
2651 | the address of a function descriptor, which resides in the .opd | |
2652 | section. gcc uses the descriptor directly rather than going via the | |
2653 | GOT as some other ABI's do, which means that initialized function | |
2654 | pointers must reference the descriptor. Thus, a function pointer | |
2655 | initialized to the address of a function in a shared library will | |
2656 | either require a copy reloc, or a dynamic reloc. Using a copy reloc | |
4cc11e76 | 2657 | redefines the function descriptor symbol to point to the copy. This |
5d35169e AM |
2658 | presents a problem as a plt entry for that function is also |
2659 | initialized from the function descriptor symbol and the copy reloc | |
2660 | may not be initialized first. */ | |
a23b6845 | 2661 | #define ELIMINATE_COPY_RELOCS 1 |
f4656909 | 2662 | |
721956f4 AM |
2663 | /* Section name for stubs is the associated section name plus this |
2664 | string. */ | |
2665 | #define STUB_SUFFIX ".stub" | |
2666 | ||
2667 | /* Linker stubs. | |
2668 | ppc_stub_long_branch: | |
2669 | Used when a 14 bit branch (or even a 24 bit branch) can't reach its | |
2670 | destination, but a 24 bit branch in a stub section will reach. | |
2671 | . b dest | |
2672 | ||
2673 | ppc_stub_plt_branch: | |
2674 | Similar to the above, but a 24 bit branch in the stub section won't | |
2675 | reach its destination. | |
87e226ce AM |
2676 | . addis %r12,%r2,xxx@toc@ha |
2677 | . ld %r11,xxx@toc@l(%r12) | |
721956f4 AM |
2678 | . mtctr %r11 |
2679 | . bctr | |
2680 | ||
2681 | ppc_stub_plt_call: | |
2c66dc6c AM |
2682 | Used to call a function in a shared library. If it so happens that |
2683 | the plt entry referenced crosses a 64k boundary, then an extra | |
2684 | "addis %r12,%r12,1" will be inserted before the load at xxx+8 or | |
2685 | xxx+16 as appropriate. | |
87e226ce | 2686 | . addis %r12,%r2,xxx@toc@ha |
721956f4 | 2687 | . std %r2,40(%r1) |
87e226ce AM |
2688 | . ld %r11,xxx+0@toc@l(%r12) |
2689 | . ld %r2,xxx+8@toc@l(%r12) | |
721956f4 | 2690 | . mtctr %r11 |
87e226ce | 2691 | . ld %r11,xxx+16@toc@l(%r12) |
721956f4 | 2692 | . bctr |
ad8e1ba5 AM |
2693 | |
2694 | ppc_stub_long_branch and ppc_stub_plt_branch may also have additional | |
2695 | code to adjust the value and save r2 to support multiple toc sections. | |
2696 | A ppc_stub_long_branch with an r2 offset looks like: | |
2697 | . std %r2,40(%r1) | |
2698 | . addis %r2,%r2,off@ha | |
2699 | . addi %r2,%r2,off@l | |
2700 | . b dest | |
2701 | ||
2702 | A ppc_stub_plt_branch with an r2 offset looks like: | |
2703 | . std %r2,40(%r1) | |
2704 | . addis %r12,%r2,xxx@toc@ha | |
2705 | . ld %r11,xxx@toc@l(%r12) | |
2706 | . addis %r2,%r2,off@ha | |
2707 | . addi %r2,%r2,off@l | |
2708 | . mtctr %r11 | |
2709 | . bctr | |
721956f4 AM |
2710 | */ |
2711 | ||
2712 | enum ppc_stub_type { | |
2713 | ppc_stub_none, | |
2714 | ppc_stub_long_branch, | |
ad8e1ba5 | 2715 | ppc_stub_long_branch_r2off, |
721956f4 | 2716 | ppc_stub_plt_branch, |
ad8e1ba5 | 2717 | ppc_stub_plt_branch_r2off, |
721956f4 AM |
2718 | ppc_stub_plt_call |
2719 | }; | |
2720 | ||
2721 | struct ppc_stub_hash_entry { | |
2722 | ||
2723 | /* Base hash table entry structure. */ | |
2724 | struct bfd_hash_entry root; | |
2725 | ||
ad8e1ba5 AM |
2726 | enum ppc_stub_type stub_type; |
2727 | ||
721956f4 AM |
2728 | /* The stub section. */ |
2729 | asection *stub_sec; | |
2730 | ||
2731 | /* Offset within stub_sec of the beginning of this stub. */ | |
2732 | bfd_vma stub_offset; | |
2733 | ||
2734 | /* Given the symbol's value and its section we can determine its final | |
2735 | value when building the stubs (so the stub knows where to jump. */ | |
2736 | bfd_vma target_value; | |
2737 | asection *target_section; | |
2738 | ||
721956f4 AM |
2739 | /* The symbol table entry, if any, that this was derived from. */ |
2740 | struct ppc_link_hash_entry *h; | |
2741 | ||
411e1bfb AM |
2742 | /* And the reloc addend that this was derived from. */ |
2743 | bfd_vma addend; | |
2744 | ||
721956f4 AM |
2745 | /* Where this stub is being called from, or, in the case of combined |
2746 | stub sections, the first input section in the group. */ | |
2747 | asection *id_sec; | |
2748 | }; | |
2749 | ||
2750 | struct ppc_branch_hash_entry { | |
2751 | ||
2752 | /* Base hash table entry structure. */ | |
2753 | struct bfd_hash_entry root; | |
2754 | ||
2755 | /* Offset within .branch_lt. */ | |
2756 | unsigned int offset; | |
2757 | ||
2758 | /* Generation marker. */ | |
2759 | unsigned int iter; | |
2760 | }; | |
65f38f15 AM |
2761 | |
2762 | struct ppc_link_hash_entry | |
2763 | { | |
2764 | struct elf_link_hash_entry elf; | |
2765 | ||
721956f4 AM |
2766 | /* A pointer to the most recently used stub hash entry against this |
2767 | symbol. */ | |
2768 | struct ppc_stub_hash_entry *stub_cache; | |
2769 | ||
65f38f15 AM |
2770 | /* Track dynamic relocs copied for this symbol. */ |
2771 | struct ppc_dyn_relocs *dyn_relocs; | |
e86ce104 | 2772 | |
721956f4 | 2773 | /* Link between function code and descriptor symbols. */ |
34814b9f | 2774 | struct ppc_link_hash_entry *oh; |
721956f4 | 2775 | |
e86ce104 AM |
2776 | /* Flag function code and descriptor symbols. */ |
2777 | unsigned int is_func:1; | |
2778 | unsigned int is_func_descriptor:1; | |
411e1bfb | 2779 | |
754021d0 AM |
2780 | /* Whether global opd sym has been adjusted or not. */ |
2781 | unsigned int adjust_done:1; | |
2782 | ||
411e1bfb | 2783 | /* Contexts in which symbol is used in the GOT (or TOC). |
e7b938ca AM |
2784 | TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the |
2785 | corresponding relocs are encountered during check_relocs. | |
2786 | tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to | |
2787 | indicate the corresponding GOT entry type is not needed. | |
2788 | tls_optimize may also set TLS_TPRELGD when a GD reloc turns into | |
2789 | a TPREL one. We use a separate flag rather than setting TPREL | |
2790 | just for convenience in distinguishing the two cases. */ | |
2791 | #define TLS_GD 1 /* GD reloc. */ | |
2792 | #define TLS_LD 2 /* LD reloc. */ | |
2793 | #define TLS_TPREL 4 /* TPREL reloc, => IE. */ | |
2794 | #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */ | |
2795 | #define TLS_TLS 16 /* Any TLS reloc. */ | |
2796 | #define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */ | |
2797 | #define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */ | |
2798 | char tls_mask; | |
65f38f15 AM |
2799 | }; |
2800 | ||
2801 | /* ppc64 ELF linker hash table. */ | |
2802 | ||
2803 | struct ppc_link_hash_table | |
2804 | { | |
2805 | struct elf_link_hash_table elf; | |
2806 | ||
721956f4 AM |
2807 | /* The stub hash table. */ |
2808 | struct bfd_hash_table stub_hash_table; | |
2809 | ||
2810 | /* Another hash table for plt_branch stubs. */ | |
2811 | struct bfd_hash_table branch_hash_table; | |
2812 | ||
2813 | /* Linker stub bfd. */ | |
2814 | bfd *stub_bfd; | |
2815 | ||
2816 | /* Linker call-backs. */ | |
4ce794b7 AM |
2817 | asection * (*add_stub_section) (const char *, asection *); |
2818 | void (*layout_sections_again) (void); | |
721956f4 AM |
2819 | |
2820 | /* Array to keep track of which stub sections have been created, and | |
2821 | information on stub grouping. */ | |
2822 | struct map_stub { | |
2823 | /* This is the section to which stubs in the group will be attached. */ | |
2824 | asection *link_sec; | |
2825 | /* The stub section. */ | |
2826 | asection *stub_sec; | |
ad8e1ba5 AM |
2827 | /* Along with elf_gp, specifies the TOC pointer used in this group. */ |
2828 | bfd_vma toc_off; | |
721956f4 AM |
2829 | } *stub_group; |
2830 | ||
ad8e1ba5 AM |
2831 | /* Support for multiple toc sections. */ |
2832 | unsigned int no_multi_toc; | |
2833 | unsigned int multi_toc_needed; | |
2834 | ||
2835 | /* Temp used when calculating TOC pointers. */ | |
2836 | bfd_vma toc_curr; | |
2837 | ||
8f3bab57 AM |
2838 | /* Highest input section id. */ |
2839 | int top_id; | |
2840 | ||
734b6cf9 AM |
2841 | /* Highest output section index. */ |
2842 | int top_index; | |
2843 | ||
2844 | /* List of input sections for each output section. */ | |
2845 | asection **input_list; | |
721956f4 | 2846 | |
65f38f15 | 2847 | /* Short-cuts to get to dynamic linker sections. */ |
4ce794b7 | 2848 | asection *got; |
4ce794b7 AM |
2849 | asection *plt; |
2850 | asection *relplt; | |
2851 | asection *dynbss; | |
2852 | asection *relbss; | |
2853 | asection *glink; | |
82bd7b59 | 2854 | asection *sfpr; |
4ce794b7 AM |
2855 | asection *brlt; |
2856 | asection *relbrlt; | |
ec338859 | 2857 | |
411e1bfb AM |
2858 | /* Shortcut to .__tls_get_addr. */ |
2859 | struct elf_link_hash_entry *tls_get_addr; | |
2860 | ||
9b5ecbd0 AM |
2861 | /* Statistics. */ |
2862 | unsigned long stub_count[ppc_stub_plt_call]; | |
2863 | ||
ad8e1ba5 AM |
2864 | /* Set if we should emit symbols for stubs. */ |
2865 | unsigned int emit_stub_syms; | |
2866 | ||
5d1634d7 | 2867 | /* Set on error. */ |
721956f4 AM |
2868 | unsigned int stub_error; |
2869 | ||
2870 | /* Flag set when small branches are detected. Used to | |
2871 | select suitable defaults for the stub group size. */ | |
2872 | unsigned int has_14bit_branch; | |
2873 | ||
2874 | /* Incremented every time we size stubs. */ | |
2875 | unsigned int stub_iteration; | |
5d1634d7 | 2876 | |
ec338859 AM |
2877 | /* Small local sym to section mapping cache. */ |
2878 | struct sym_sec_cache sym_sec; | |
65f38f15 AM |
2879 | }; |
2880 | ||
2881 | /* Get the ppc64 ELF linker hash table from a link_info structure. */ | |
2882 | ||
2883 | #define ppc_hash_table(p) \ | |
2884 | ((struct ppc_link_hash_table *) ((p)->hash)) | |
2885 | ||
721956f4 AM |
2886 | #define ppc_stub_hash_lookup(table, string, create, copy) \ |
2887 | ((struct ppc_stub_hash_entry *) \ | |
2888 | bfd_hash_lookup ((table), (string), (create), (copy))) | |
2889 | ||
2890 | #define ppc_branch_hash_lookup(table, string, create, copy) \ | |
2891 | ((struct ppc_branch_hash_entry *) \ | |
2892 | bfd_hash_lookup ((table), (string), (create), (copy))) | |
2893 | ||
2894 | /* Create an entry in the stub hash table. */ | |
2895 | ||
2896 | static struct bfd_hash_entry * | |
4ce794b7 AM |
2897 | stub_hash_newfunc (struct bfd_hash_entry *entry, |
2898 | struct bfd_hash_table *table, | |
2899 | const char *string) | |
721956f4 AM |
2900 | { |
2901 | /* Allocate the structure if it has not already been allocated by a | |
2902 | subclass. */ | |
2903 | if (entry == NULL) | |
2904 | { | |
2905 | entry = bfd_hash_allocate (table, sizeof (struct ppc_stub_hash_entry)); | |
2906 | if (entry == NULL) | |
2907 | return entry; | |
2908 | } | |
2909 | ||
2910 | /* Call the allocation method of the superclass. */ | |
2911 | entry = bfd_hash_newfunc (entry, table, string); | |
2912 | if (entry != NULL) | |
2913 | { | |
2914 | struct ppc_stub_hash_entry *eh; | |
2915 | ||
2916 | /* Initialize the local fields. */ | |
2917 | eh = (struct ppc_stub_hash_entry *) entry; | |
ad8e1ba5 | 2918 | eh->stub_type = ppc_stub_none; |
721956f4 AM |
2919 | eh->stub_sec = NULL; |
2920 | eh->stub_offset = 0; | |
2921 | eh->target_value = 0; | |
2922 | eh->target_section = NULL; | |
721956f4 AM |
2923 | eh->h = NULL; |
2924 | eh->id_sec = NULL; | |
2925 | } | |
2926 | ||
2927 | return entry; | |
2928 | } | |
2929 | ||
2930 | /* Create an entry in the branch hash table. */ | |
2931 | ||
2932 | static struct bfd_hash_entry * | |
4ce794b7 AM |
2933 | branch_hash_newfunc (struct bfd_hash_entry *entry, |
2934 | struct bfd_hash_table *table, | |
2935 | const char *string) | |
721956f4 AM |
2936 | { |
2937 | /* Allocate the structure if it has not already been allocated by a | |
2938 | subclass. */ | |
2939 | if (entry == NULL) | |
2940 | { | |
2941 | entry = bfd_hash_allocate (table, sizeof (struct ppc_branch_hash_entry)); | |
2942 | if (entry == NULL) | |
2943 | return entry; | |
2944 | } | |
2945 | ||
2946 | /* Call the allocation method of the superclass. */ | |
2947 | entry = bfd_hash_newfunc (entry, table, string); | |
2948 | if (entry != NULL) | |
2949 | { | |
2950 | struct ppc_branch_hash_entry *eh; | |
2951 | ||
2952 | /* Initialize the local fields. */ | |
2953 | eh = (struct ppc_branch_hash_entry *) entry; | |
2954 | eh->offset = 0; | |
2955 | eh->iter = 0; | |
2956 | } | |
2957 | ||
2958 | return entry; | |
2959 | } | |
2960 | ||
65f38f15 AM |
2961 | /* Create an entry in a ppc64 ELF linker hash table. */ |
2962 | ||
2963 | static struct bfd_hash_entry * | |
4ce794b7 AM |
2964 | link_hash_newfunc (struct bfd_hash_entry *entry, |
2965 | struct bfd_hash_table *table, | |
2966 | const char *string) | |
65f38f15 AM |
2967 | { |
2968 | /* Allocate the structure if it has not already been allocated by a | |
2969 | subclass. */ | |
2970 | if (entry == NULL) | |
2971 | { | |
2972 | entry = bfd_hash_allocate (table, sizeof (struct ppc_link_hash_entry)); | |
2973 | if (entry == NULL) | |
2974 | return entry; | |
2975 | } | |
2976 | ||
2977 | /* Call the allocation method of the superclass. */ | |
2978 | entry = _bfd_elf_link_hash_newfunc (entry, table, string); | |
2979 | if (entry != NULL) | |
2980 | { | |
2981 | struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) entry; | |
2982 | ||
721956f4 | 2983 | eh->stub_cache = NULL; |
65f38f15 | 2984 | eh->dyn_relocs = NULL; |
721956f4 | 2985 | eh->oh = NULL; |
e86ce104 AM |
2986 | eh->is_func = 0; |
2987 | eh->is_func_descriptor = 0; | |
754021d0 | 2988 | eh->adjust_done = 0; |
e7b938ca | 2989 | eh->tls_mask = 0; |
65f38f15 AM |
2990 | } |
2991 | ||
2992 | return entry; | |
2993 | } | |
2994 | ||
2995 | /* Create a ppc64 ELF linker hash table. */ | |
2996 | ||
2997 | static struct bfd_link_hash_table * | |
4ce794b7 | 2998 | ppc64_elf_link_hash_table_create (bfd *abfd) |
65f38f15 AM |
2999 | { |
3000 | struct ppc_link_hash_table *htab; | |
3001 | bfd_size_type amt = sizeof (struct ppc_link_hash_table); | |
3002 | ||
4ce794b7 | 3003 | htab = bfd_zmalloc (amt); |
65f38f15 AM |
3004 | if (htab == NULL) |
3005 | return NULL; | |
3006 | ||
3007 | if (! _bfd_elf_link_hash_table_init (&htab->elf, abfd, link_hash_newfunc)) | |
3008 | { | |
e2d34d7d | 3009 | free (htab); |
65f38f15 AM |
3010 | return NULL; |
3011 | } | |
3012 | ||
721956f4 AM |
3013 | /* Init the stub hash table too. */ |
3014 | if (!bfd_hash_table_init (&htab->stub_hash_table, stub_hash_newfunc)) | |
3015 | return NULL; | |
3016 | ||
3017 | /* And the branch hash table. */ | |
3018 | if (!bfd_hash_table_init (&htab->branch_hash_table, branch_hash_newfunc)) | |
3019 | return NULL; | |
3020 | ||
3254fd24 AM |
3021 | /* Initializing two fields of the union is just cosmetic. We really |
3022 | only care about glist, but when compiled on a 32-bit host the | |
3023 | bfd_vma fields are larger. Setting the bfd_vma to zero makes | |
3024 | debugger inspection of these fields look nicer. */ | |
3025 | htab->elf.init_refcount.refcount = 0; | |
3026 | htab->elf.init_refcount.glist = NULL; | |
3027 | htab->elf.init_offset.offset = 0; | |
3028 | htab->elf.init_offset.glist = NULL; | |
3029 | ||
65f38f15 AM |
3030 | return &htab->elf.root; |
3031 | } | |
3032 | ||
721956f4 AM |
3033 | /* Free the derived linker hash table. */ |
3034 | ||
3035 | static void | |
4ce794b7 | 3036 | ppc64_elf_link_hash_table_free (struct bfd_link_hash_table *hash) |
721956f4 AM |
3037 | { |
3038 | struct ppc_link_hash_table *ret = (struct ppc_link_hash_table *) hash; | |
3039 | ||
3040 | bfd_hash_table_free (&ret->stub_hash_table); | |
3041 | bfd_hash_table_free (&ret->branch_hash_table); | |
3042 | _bfd_generic_link_hash_table_free (hash); | |
3043 | } | |
3044 | ||
e717da7e AM |
3045 | /* Satisfy the ELF linker by filling in some fields in our fake bfd. */ |
3046 | ||
3047 | void | |
3048 | ppc64_elf_init_stub_bfd (bfd *abfd, struct bfd_link_info *info) | |
3049 | { | |
3050 | struct ppc_link_hash_table *htab; | |
3051 | ||
3052 | elf_elfheader (abfd)->e_ident[EI_CLASS] = ELFCLASS64; | |
3053 | ||
3054 | /* Always hook our dynamic sections into the first bfd, which is the | |
3055 | linker created stub bfd. This ensures that the GOT header is at | |
3056 | the start of the output TOC section. */ | |
3057 | htab = ppc_hash_table (info); | |
3058 | htab->stub_bfd = abfd; | |
3059 | htab->elf.dynobj = abfd; | |
3060 | } | |
3061 | ||
721956f4 AM |
3062 | /* Build a name for an entry in the stub hash table. */ |
3063 | ||
3064 | static char * | |
4ce794b7 AM |
3065 | ppc_stub_name (const asection *input_section, |
3066 | const asection *sym_sec, | |
3067 | const struct ppc_link_hash_entry *h, | |
3068 | const Elf_Internal_Rela *rel) | |
721956f4 AM |
3069 | { |
3070 | char *stub_name; | |
3071 | bfd_size_type len; | |
3072 | ||
3073 | /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31 | |
3074 | offsets from a sym as a branch target? In fact, we could | |
3075 | probably assume the addend is always zero. */ | |
3076 | BFD_ASSERT (((int) rel->r_addend & 0xffffffff) == rel->r_addend); | |
3077 | ||
3078 | if (h) | |
3079 | { | |
3080 | len = 8 + 1 + strlen (h->elf.root.root.string) + 1 + 8 + 1; | |
3081 | stub_name = bfd_malloc (len); | |
3082 | if (stub_name != NULL) | |
3083 | { | |
97b639ba | 3084 | sprintf (stub_name, "%08x.%s+%x", |
721956f4 AM |
3085 | input_section->id & 0xffffffff, |
3086 | h->elf.root.root.string, | |
3087 | (int) rel->r_addend & 0xffffffff); | |
3088 | } | |
3089 | } | |
3090 | else | |
3091 | { | |
ad8e1ba5 | 3092 | len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1; |
721956f4 AM |
3093 | stub_name = bfd_malloc (len); |
3094 | if (stub_name != NULL) | |
3095 | { | |
97b639ba | 3096 | sprintf (stub_name, "%08x.%x:%x+%x", |
721956f4 AM |
3097 | input_section->id & 0xffffffff, |
3098 | sym_sec->id & 0xffffffff, | |
3099 | (int) ELF64_R_SYM (rel->r_info) & 0xffffffff, | |
3100 | (int) rel->r_addend & 0xffffffff); | |
3101 | } | |
3102 | } | |
3103 | return stub_name; | |
3104 | } | |
3105 | ||
3106 | /* Look up an entry in the stub hash. Stub entries are cached because | |
3107 | creating the stub name takes a bit of time. */ | |
3108 | ||
3109 | static struct ppc_stub_hash_entry * | |
4ce794b7 AM |
3110 | ppc_get_stub_entry (const asection *input_section, |
3111 | const asection *sym_sec, | |
3112 | struct elf_link_hash_entry *hash, | |
3113 | const Elf_Internal_Rela *rel, | |
3114 | struct ppc_link_hash_table *htab) | |
721956f4 AM |
3115 | { |
3116 | struct ppc_stub_hash_entry *stub_entry; | |
3117 | struct ppc_link_hash_entry *h = (struct ppc_link_hash_entry *) hash; | |
3118 | const asection *id_sec; | |
3119 | ||
3120 | /* If this input section is part of a group of sections sharing one | |
3121 | stub section, then use the id of the first section in the group. | |
3122 | Stub names need to include a section id, as there may well be | |
3123 | more than one stub used to reach say, printf, and we need to | |
3124 | distinguish between them. */ | |
3125 | id_sec = htab->stub_group[input_section->id].link_sec; | |
3126 | ||
3127 | if (h != NULL && h->stub_cache != NULL | |
3128 | && h->stub_cache->h == h | |
3129 | && h->stub_cache->id_sec == id_sec) | |
3130 | { | |
3131 | stub_entry = h->stub_cache; | |
3132 | } | |
3133 | else | |
3134 | { | |
3135 | char *stub_name; | |
3136 | ||
3137 | stub_name = ppc_stub_name (id_sec, sym_sec, h, rel); | |
3138 | if (stub_name == NULL) | |
3139 | return NULL; | |
3140 | ||
3141 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, | |
b34976b6 | 3142 | stub_name, FALSE, FALSE); |
721956f4 AM |
3143 | if (h != NULL) |
3144 | h->stub_cache = stub_entry; | |
3145 | ||
3146 | free (stub_name); | |
3147 | } | |
3148 | ||
3149 | return stub_entry; | |
3150 | } | |
3151 | ||
3152 | /* Add a new stub entry to the stub hash. Not all fields of the new | |
3153 | stub entry are initialised. */ | |
3154 | ||
3155 | static struct ppc_stub_hash_entry * | |
4ce794b7 AM |
3156 | ppc_add_stub (const char *stub_name, |
3157 | asection *section, | |
3158 | struct ppc_link_hash_table *htab) | |
721956f4 AM |
3159 | { |
3160 | asection *link_sec; | |
3161 | asection *stub_sec; | |
3162 | struct ppc_stub_hash_entry *stub_entry; | |
3163 | ||
3164 | link_sec = htab->stub_group[section->id].link_sec; | |
3165 | stub_sec = htab->stub_group[section->id].stub_sec; | |
3166 | if (stub_sec == NULL) | |
3167 | { | |
3168 | stub_sec = htab->stub_group[link_sec->id].stub_sec; | |
3169 | if (stub_sec == NULL) | |
3170 | { | |
d4c88bbb | 3171 | size_t namelen; |
721956f4 AM |
3172 | bfd_size_type len; |
3173 | char *s_name; | |
3174 | ||
d4c88bbb AM |
3175 | namelen = strlen (link_sec->name); |
3176 | len = namelen + sizeof (STUB_SUFFIX); | |
721956f4 AM |
3177 | s_name = bfd_alloc (htab->stub_bfd, len); |
3178 | if (s_name == NULL) | |
3179 | return NULL; | |
3180 | ||
d4c88bbb AM |
3181 | memcpy (s_name, link_sec->name, namelen); |
3182 | memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX)); | |
721956f4 AM |
3183 | stub_sec = (*htab->add_stub_section) (s_name, link_sec); |
3184 | if (stub_sec == NULL) | |
3185 | return NULL; | |
3186 | htab->stub_group[link_sec->id].stub_sec = stub_sec; | |
3187 | } | |
3188 | htab->stub_group[section->id].stub_sec = stub_sec; | |
3189 | } | |
3190 | ||
3191 | /* Enter this entry into the linker stub hash table. */ | |
3192 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, stub_name, | |
b34976b6 | 3193 | TRUE, FALSE); |
721956f4 AM |
3194 | if (stub_entry == NULL) |
3195 | { | |
3196 | (*_bfd_error_handler) (_("%s: cannot create stub entry %s"), | |
3197 | bfd_archive_filename (section->owner), | |
3198 | stub_name); | |
3199 | return NULL; | |
3200 | } | |
3201 | ||
3202 | stub_entry->stub_sec = stub_sec; | |
3203 | stub_entry->stub_offset = 0; | |
3204 | stub_entry->id_sec = link_sec; | |
3205 | return stub_entry; | |
3206 | } | |
3207 | ||
82bd7b59 AM |
3208 | /* Create sections for linker generated code. */ |
3209 | ||
b34976b6 | 3210 | static bfd_boolean |
4ce794b7 | 3211 | create_linkage_sections (bfd *dynobj, struct bfd_link_info *info) |
82bd7b59 AM |
3212 | { |
3213 | struct ppc_link_hash_table *htab; | |
3214 | flagword flags; | |
3215 | ||
3216 | htab = ppc_hash_table (info); | |
3217 | ||
3218 | /* Create .sfpr for code to save and restore fp regs. */ | |
3219 | flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY | |
3220 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
721956f4 | 3221 | htab->sfpr = bfd_make_section_anyway (dynobj, ".sfpr"); |
82bd7b59 AM |
3222 | if (htab->sfpr == NULL |
3223 | || ! bfd_set_section_flags (dynobj, htab->sfpr, flags) | |
3224 | || ! bfd_set_section_alignment (dynobj, htab->sfpr, 2)) | |
b34976b6 | 3225 | return FALSE; |
82bd7b59 | 3226 | |
721956f4 | 3227 | /* Create .glink for lazy dynamic linking support. */ |
4ce794b7 AM |
3228 | htab->glink = bfd_make_section_anyway (dynobj, ".glink"); |
3229 | if (htab->glink == NULL | |
3230 | || ! bfd_set_section_flags (dynobj, htab->glink, flags) | |
3231 | || ! bfd_set_section_alignment (dynobj, htab->glink, 2)) | |
b34976b6 | 3232 | return FALSE; |
82bd7b59 | 3233 | |
721956f4 AM |
3234 | /* Create .branch_lt for plt_branch stubs. */ |
3235 | flags = (SEC_ALLOC | SEC_LOAD | |
3236 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
4ce794b7 AM |
3237 | htab->brlt = bfd_make_section_anyway (dynobj, ".branch_lt"); |
3238 | if (htab->brlt == NULL | |
3239 | || ! bfd_set_section_flags (dynobj, htab->brlt, flags) | |
3240 | || ! bfd_set_section_alignment (dynobj, htab->brlt, 3)) | |
b34976b6 | 3241 | return FALSE; |
721956f4 AM |
3242 | |
3243 | if (info->shared) | |
3244 | { | |
3245 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | |
3246 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
4ce794b7 AM |
3247 | htab->relbrlt = bfd_make_section_anyway (dynobj, ".rela.branch_lt"); |
3248 | if (!htab->relbrlt | |
3249 | || ! bfd_set_section_flags (dynobj, htab->relbrlt, flags) | |
3250 | || ! bfd_set_section_alignment (dynobj, htab->relbrlt, 3)) | |
b34976b6 | 3251 | return FALSE; |
721956f4 | 3252 | } |
b34976b6 | 3253 | return TRUE; |
82bd7b59 AM |
3254 | } |
3255 | ||
e717da7e AM |
3256 | /* Create .got and .rela.got sections in ABFD, and .got in dynobj if |
3257 | not already done. */ | |
65f38f15 | 3258 | |
b34976b6 | 3259 | static bfd_boolean |
e717da7e | 3260 | create_got_section (bfd *abfd, struct bfd_link_info *info) |
65f38f15 | 3261 | { |
e717da7e AM |
3262 | asection *got, *relgot; |
3263 | flagword flags; | |
3264 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
65f38f15 | 3265 | |
4ce794b7 | 3266 | if (!htab->got) |
e717da7e AM |
3267 | { |
3268 | if (! _bfd_elf_create_got_section (htab->elf.dynobj, info)) | |
3269 | return FALSE; | |
3270 | ||
3271 | htab->got = bfd_get_section_by_name (htab->elf.dynobj, ".got"); | |
3272 | if (!htab->got) | |
3273 | abort (); | |
3274 | } | |
3275 | ||
3276 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY | |
3277 | | SEC_LINKER_CREATED); | |
3278 | ||
3279 | got = bfd_make_section (abfd, ".got"); | |
3280 | if (!got | |
3281 | || !bfd_set_section_flags (abfd, got, flags) | |
3282 | || !bfd_set_section_alignment (abfd, got, 3)) | |
3283 | return FALSE; | |
65f38f15 | 3284 | |
e717da7e AM |
3285 | relgot = bfd_make_section (abfd, ".rela.got"); |
3286 | if (!relgot | |
3287 | || ! bfd_set_section_flags (abfd, relgot, flags | SEC_READONLY) | |
3288 | || ! bfd_set_section_alignment (abfd, relgot, 3)) | |
b34976b6 | 3289 | return FALSE; |
e717da7e AM |
3290 | |
3291 | ppc64_elf_tdata (abfd)->got = got; | |
3292 | ppc64_elf_tdata (abfd)->relgot = relgot; | |
b34976b6 | 3293 | return TRUE; |
65f38f15 | 3294 | } |
5bd4f169 | 3295 | |
82bd7b59 | 3296 | /* Create the dynamic sections, and set up shortcuts. */ |
5bd4f169 | 3297 | |
b34976b6 | 3298 | static bfd_boolean |
4ce794b7 | 3299 | ppc64_elf_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info) |
5bd4f169 | 3300 | { |
65f38f15 | 3301 | struct ppc_link_hash_table *htab; |
5bd4f169 | 3302 | |
65f38f15 | 3303 | if (!_bfd_elf_create_dynamic_sections (dynobj, info)) |
b34976b6 | 3304 | return FALSE; |
65f38f15 | 3305 | |
e717da7e AM |
3306 | htab = ppc_hash_table (info); |
3307 | if (!htab->got) | |
3308 | htab->got = bfd_get_section_by_name (dynobj, ".got"); | |
4ce794b7 AM |
3309 | htab->plt = bfd_get_section_by_name (dynobj, ".plt"); |
3310 | htab->relplt = bfd_get_section_by_name (dynobj, ".rela.plt"); | |
3311 | htab->dynbss = bfd_get_section_by_name (dynobj, ".dynbss"); | |
65f38f15 | 3312 | if (!info->shared) |
4ce794b7 | 3313 | htab->relbss = bfd_get_section_by_name (dynobj, ".rela.bss"); |
65f38f15 | 3314 | |
e717da7e | 3315 | if (!htab->got || !htab->plt || !htab->relplt || !htab->dynbss |
4ce794b7 | 3316 | || (!info->shared && !htab->relbss)) |
65f38f15 AM |
3317 | abort (); |
3318 | ||
b34976b6 | 3319 | return TRUE; |
5bd4f169 AM |
3320 | } |
3321 | ||
65f38f15 AM |
3322 | /* Copy the extra info we tack onto an elf_link_hash_entry. */ |
3323 | ||
3324 | static void | |
9c5bfbb7 AM |
3325 | ppc64_elf_copy_indirect_symbol |
3326 | (const struct elf_backend_data *bed ATTRIBUTE_UNUSED, | |
3327 | struct elf_link_hash_entry *dir, | |
3328 | struct elf_link_hash_entry *ind) | |
65f38f15 AM |
3329 | { |
3330 | struct ppc_link_hash_entry *edir, *eind; | |
81848ca0 | 3331 | flagword mask; |
65f38f15 AM |
3332 | |
3333 | edir = (struct ppc_link_hash_entry *) dir; | |
3334 | eind = (struct ppc_link_hash_entry *) ind; | |
3335 | ||
411e1bfb | 3336 | /* Copy over any dynamic relocs we may have on the indirect sym. */ |
bbd7ec4a | 3337 | if (eind->dyn_relocs != NULL) |
65f38f15 | 3338 | { |
bbd7ec4a AM |
3339 | if (edir->dyn_relocs != NULL) |
3340 | { | |
3341 | struct ppc_dyn_relocs **pp; | |
3342 | struct ppc_dyn_relocs *p; | |
3343 | ||
411e1bfb | 3344 | if (eind->elf.root.type == bfd_link_hash_indirect) |
bbd7ec4a AM |
3345 | abort (); |
3346 | ||
3347 | /* Add reloc counts against the weak sym to the strong sym | |
3348 | list. Merge any entries against the same section. */ | |
3349 | for (pp = &eind->dyn_relocs; (p = *pp) != NULL; ) | |
3350 | { | |
3351 | struct ppc_dyn_relocs *q; | |
3352 | ||
3353 | for (q = edir->dyn_relocs; q != NULL; q = q->next) | |
3354 | if (q->sec == p->sec) | |
3355 | { | |
3356 | q->pc_count += p->pc_count; | |
3357 | q->count += p->count; | |
3358 | *pp = p->next; | |
3359 | break; | |
3360 | } | |
3361 | if (q == NULL) | |
3362 | pp = &p->next; | |
3363 | } | |
3364 | *pp = edir->dyn_relocs; | |
3365 | } | |
3366 | ||
65f38f15 AM |
3367 | edir->dyn_relocs = eind->dyn_relocs; |
3368 | eind->dyn_relocs = NULL; | |
3369 | } | |
65f38f15 | 3370 | |
6349e628 AM |
3371 | edir->is_func |= eind->is_func; |
3372 | edir->is_func_descriptor |= eind->is_func_descriptor; | |
58ac9f71 | 3373 | edir->tls_mask |= eind->tls_mask; |
6349e628 | 3374 | |
81848ca0 | 3375 | mask = (ELF_LINK_HASH_REF_DYNAMIC | ELF_LINK_HASH_REF_REGULAR |
3addb0a9 DJ |
3376 | | ELF_LINK_HASH_REF_REGULAR_NONWEAK | ELF_LINK_NON_GOT_REF |
3377 | | ELF_LINK_HASH_NEEDS_PLT); | |
81848ca0 AM |
3378 | /* If called to transfer flags for a weakdef during processing |
3379 | of elf_adjust_dynamic_symbol, don't copy ELF_LINK_NON_GOT_REF. | |
3380 | We clear it ourselves for ELIMINATE_COPY_RELOCS. */ | |
3381 | if (ELIMINATE_COPY_RELOCS | |
3382 | && eind->elf.root.type != bfd_link_hash_indirect | |
3383 | && (edir->elf.elf_link_hash_flags & ELF_LINK_HASH_DYNAMIC_ADJUSTED) != 0) | |
3384 | mask &= ~ELF_LINK_NON_GOT_REF; | |
3385 | ||
3386 | edir->elf.elf_link_hash_flags |= eind->elf.elf_link_hash_flags & mask; | |
6349e628 AM |
3387 | |
3388 | /* If we were called to copy over info for a weak sym, that's all. */ | |
3389 | if (eind->elf.root.type != bfd_link_hash_indirect) | |
3390 | return; | |
3391 | ||
81848ca0 AM |
3392 | /* Copy over got entries that we may have already seen to the |
3393 | symbol which just became indirect. */ | |
411e1bfb AM |
3394 | if (eind->elf.got.glist != NULL) |
3395 | { | |
3396 | if (edir->elf.got.glist != NULL) | |
3397 | { | |
3398 | struct got_entry **entp; | |
3399 | struct got_entry *ent; | |
3400 | ||
3401 | for (entp = &eind->elf.got.glist; (ent = *entp) != NULL; ) | |
3402 | { | |
3403 | struct got_entry *dent; | |
3404 | ||
3405 | for (dent = edir->elf.got.glist; dent != NULL; dent = dent->next) | |
3406 | if (dent->addend == ent->addend | |
e717da7e | 3407 | && dent->owner == ent->owner |
411e1bfb AM |
3408 | && dent->tls_type == ent->tls_type) |
3409 | { | |
3410 | dent->got.refcount += ent->got.refcount; | |
3411 | *entp = ent->next; | |
3412 | break; | |
3413 | } | |
3414 | if (dent == NULL) | |
3415 | entp = &ent->next; | |
3416 | } | |
3417 | *entp = edir->elf.got.glist; | |
3418 | } | |
3419 | ||
3420 | edir->elf.got.glist = eind->elf.got.glist; | |
3421 | eind->elf.got.glist = NULL; | |
3422 | } | |
3423 | ||
3424 | /* And plt entries. */ | |
3425 | if (eind->elf.plt.plist != NULL) | |
3426 | { | |
3427 | if (edir->elf.plt.plist != NULL) | |
3428 | { | |
3429 | struct plt_entry **entp; | |
3430 | struct plt_entry *ent; | |
3431 | ||
3432 | for (entp = &eind->elf.plt.plist; (ent = *entp) != NULL; ) | |
3433 | { | |
3434 | struct plt_entry *dent; | |
3435 | ||
3436 | for (dent = edir->elf.plt.plist; dent != NULL; dent = dent->next) | |
3437 | if (dent->addend == ent->addend) | |
3438 | { | |
3439 | dent->plt.refcount += ent->plt.refcount; | |
3440 | *entp = ent->next; | |
3441 | break; | |
3442 | } | |
3443 | if (dent == NULL) | |
3444 | entp = &ent->next; | |
3445 | } | |
3446 | *entp = edir->elf.plt.plist; | |
3447 | } | |
3448 | ||
3449 | edir->elf.plt.plist = eind->elf.plt.plist; | |
3450 | eind->elf.plt.plist = NULL; | |
3451 | } | |
3452 | ||
411e1bfb AM |
3453 | if (edir->elf.dynindx == -1) |
3454 | { | |
3455 | edir->elf.dynindx = eind->elf.dynindx; | |
3456 | edir->elf.dynstr_index = eind->elf.dynstr_index; | |
3457 | eind->elf.dynindx = -1; | |
3458 | eind->elf.dynstr_index = 0; | |
3459 | } | |
3460 | else | |
3461 | BFD_ASSERT (eind->elf.dynindx == -1); | |
3462 | } | |
3463 | ||
555cd476 AM |
3464 | /* Hack symbols defined in .opd sections to be function type. */ |
3465 | ||
3466 | static bfd_boolean | |
3467 | ppc64_elf_add_symbol_hook (bfd *ibfd ATTRIBUTE_UNUSED, | |
3468 | struct bfd_link_info *info ATTRIBUTE_UNUSED, | |
3469 | Elf_Internal_Sym *isym, | |
3470 | const char **name ATTRIBUTE_UNUSED, | |
3471 | flagword *flags ATTRIBUTE_UNUSED, | |
3472 | asection **sec, | |
3473 | bfd_vma *value ATTRIBUTE_UNUSED) | |
3474 | { | |
3475 | if (strcmp (bfd_get_section_name (ibfd, *sec), ".opd") == 0) | |
3476 | isym->st_info = ELF_ST_INFO (ELF_ST_BIND (isym->st_info), STT_FUNC); | |
3477 | return TRUE; | |
3478 | } | |
3479 | ||
411e1bfb | 3480 | static bfd_boolean |
4ce794b7 AM |
3481 | update_local_sym_info (bfd *abfd, Elf_Internal_Shdr *symtab_hdr, |
3482 | unsigned long r_symndx, bfd_vma r_addend, int tls_type) | |
411e1bfb AM |
3483 | { |
3484 | struct got_entry **local_got_ents = elf_local_got_ents (abfd); | |
e7b938ca | 3485 | char *local_got_tls_masks; |
411e1bfb AM |
3486 | |
3487 | if (local_got_ents == NULL) | |
3488 | { | |
3489 | bfd_size_type size = symtab_hdr->sh_info; | |
3490 | ||
e7b938ca | 3491 | size *= sizeof (*local_got_ents) + sizeof (*local_got_tls_masks); |
4ce794b7 | 3492 | local_got_ents = bfd_zalloc (abfd, size); |
411e1bfb AM |
3493 | if (local_got_ents == NULL) |
3494 | return FALSE; | |
3495 | elf_local_got_ents (abfd) = local_got_ents; | |
3496 | } | |
3497 | ||
3498 | if ((tls_type & TLS_EXPLICIT) == 0) | |
3499 | { | |
3500 | struct got_entry *ent; | |
3501 | ||
3502 | for (ent = local_got_ents[r_symndx]; ent != NULL; ent = ent->next) | |
e717da7e AM |
3503 | if (ent->addend == r_addend |
3504 | && ent->owner == abfd | |
3505 | && ent->tls_type == tls_type) | |
411e1bfb AM |
3506 | break; |
3507 | if (ent == NULL) | |
3508 | { | |
3509 | bfd_size_type amt = sizeof (*ent); | |
4ce794b7 | 3510 | ent = bfd_alloc (abfd, amt); |
411e1bfb AM |
3511 | if (ent == NULL) |
3512 | return FALSE; | |
3513 | ent->next = local_got_ents[r_symndx]; | |
3514 | ent->addend = r_addend; | |
e717da7e | 3515 | ent->owner = abfd; |
411e1bfb AM |
3516 | ent->tls_type = tls_type; |
3517 | ent->got.refcount = 0; | |
3518 | local_got_ents[r_symndx] = ent; | |
3519 | } | |
3520 | ent->got.refcount += 1; | |
3521 | } | |
3522 | ||
e7b938ca AM |
3523 | local_got_tls_masks = (char *) (local_got_ents + symtab_hdr->sh_info); |
3524 | local_got_tls_masks[r_symndx] |= tls_type; | |
411e1bfb | 3525 | return TRUE; |
65f38f15 AM |
3526 | } |
3527 | ||
411e1bfb | 3528 | static bfd_boolean |
4ce794b7 | 3529 | update_plt_info (bfd *abfd, struct ppc_link_hash_entry *eh, bfd_vma addend) |
1e2f5b6e | 3530 | { |
411e1bfb | 3531 | struct plt_entry *ent; |
1e2f5b6e | 3532 | |
411e1bfb AM |
3533 | for (ent = eh->elf.plt.plist; ent != NULL; ent = ent->next) |
3534 | if (ent->addend == addend) | |
3535 | break; | |
3536 | if (ent == NULL) | |
1e2f5b6e | 3537 | { |
411e1bfb | 3538 | bfd_size_type amt = sizeof (*ent); |
4ce794b7 | 3539 | ent = bfd_alloc (abfd, amt); |
411e1bfb AM |
3540 | if (ent == NULL) |
3541 | return FALSE; | |
3542 | ent->next = eh->elf.plt.plist; | |
3543 | ent->addend = addend; | |
3544 | ent->plt.refcount = 0; | |
3545 | eh->elf.plt.plist = ent; | |
1e2f5b6e | 3546 | } |
411e1bfb AM |
3547 | ent->plt.refcount += 1; |
3548 | eh->elf.elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT; | |
3549 | eh->is_func = 1; | |
b34976b6 | 3550 | return TRUE; |
1e2f5b6e AM |
3551 | } |
3552 | ||
50bc7936 AM |
3553 | /* Find the function descriptor hash entry from the given function code |
3554 | hash entry FH. Link the entries via their OH fields. */ | |
3555 | static struct ppc_link_hash_entry * | |
3556 | get_fdh (struct ppc_link_hash_entry *fh, struct ppc_link_hash_table *htab) | |
3557 | { | |
34814b9f | 3558 | struct ppc_link_hash_entry *fdh = fh->oh; |
50bc7936 AM |
3559 | |
3560 | if (fdh == NULL) | |
3561 | { | |
3562 | const char *fd_name = fh->elf.root.root.string + 1; | |
3563 | ||
3564 | fdh = (struct ppc_link_hash_entry *) | |
3565 | elf_link_hash_lookup (&htab->elf, fd_name, FALSE, FALSE, FALSE); | |
3566 | if (fdh != NULL) | |
3567 | { | |
3568 | fdh->is_func_descriptor = 1; | |
34814b9f | 3569 | fdh->oh = fh; |
50bc7936 | 3570 | fh->is_func = 1; |
34814b9f | 3571 | fh->oh = fdh; |
50bc7936 AM |
3572 | } |
3573 | } | |
3574 | ||
3575 | return fdh; | |
3576 | } | |
3577 | ||
5bd4f169 | 3578 | /* Look through the relocs for a section during the first phase, and |
65f38f15 | 3579 | calculate needed space in the global offset table, procedure |
5d1634d7 | 3580 | linkage table, and dynamic reloc sections. */ |
5bd4f169 | 3581 | |
b34976b6 | 3582 | static bfd_boolean |
4ce794b7 AM |
3583 | ppc64_elf_check_relocs (bfd *abfd, struct bfd_link_info *info, |
3584 | asection *sec, const Elf_Internal_Rela *relocs) | |
5bd4f169 | 3585 | { |
65f38f15 | 3586 | struct ppc_link_hash_table *htab; |
5bd4f169 AM |
3587 | Elf_Internal_Shdr *symtab_hdr; |
3588 | struct elf_link_hash_entry **sym_hashes, **sym_hashes_end; | |
3589 | const Elf_Internal_Rela *rel; | |
3590 | const Elf_Internal_Rela *rel_end; | |
5bd4f169 | 3591 | asection *sreloc; |
1e2f5b6e | 3592 | asection **opd_sym_map; |
5bd4f169 | 3593 | |
1049f94e | 3594 | if (info->relocatable) |
b34976b6 | 3595 | return TRUE; |
5bd4f169 | 3596 | |
680a3378 AM |
3597 | /* Don't do anything special with non-loaded, non-alloced sections. |
3598 | In particular, any relocs in such sections should not affect GOT | |
3599 | and PLT reference counting (ie. we don't allow them to create GOT | |
3600 | or PLT entries), there's no possibility or desire to optimize TLS | |
3601 | relocs, and there's not much point in propagating relocs to shared | |
3602 | libs that the dynamic linker won't relocate. */ | |
3603 | if ((sec->flags & SEC_ALLOC) == 0) | |
3604 | return TRUE; | |
3605 | ||
65f38f15 | 3606 | htab = ppc_hash_table (info); |
5bd4f169 | 3607 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
5bd4f169 AM |
3608 | |
3609 | sym_hashes = elf_sym_hashes (abfd); | |
3610 | sym_hashes_end = (sym_hashes | |
1e2f5b6e AM |
3611 | + symtab_hdr->sh_size / sizeof (Elf64_External_Sym) |
3612 | - symtab_hdr->sh_info); | |
5bd4f169 AM |
3613 | |
3614 | sreloc = NULL; | |
1e2f5b6e AM |
3615 | opd_sym_map = NULL; |
3616 | if (strcmp (bfd_get_section_name (abfd, sec), ".opd") == 0) | |
3617 | { | |
3618 | /* Garbage collection needs some extra help with .opd sections. | |
3619 | We don't want to necessarily keep everything referenced by | |
3620 | relocs in .opd, as that would keep all functions. Instead, | |
3621 | if we reference an .opd symbol (a function descriptor), we | |
3622 | want to keep the function code symbol's section. This is | |
3623 | easy for global symbols, but for local syms we need to keep | |
3624 | information about the associated function section. Later, if | |
3625 | edit_opd deletes entries, we'll use this array to adjust | |
3626 | local syms in .opd. */ | |
3627 | union opd_info { | |
3628 | asection *func_section; | |
3629 | long entry_adjust; | |
3630 | }; | |
3631 | bfd_size_type amt; | |
3632 | ||
eea6121a | 3633 | amt = sec->size * sizeof (union opd_info) / 24; |
4ce794b7 | 3634 | opd_sym_map = bfd_zalloc (abfd, amt); |
1e2f5b6e | 3635 | if (opd_sym_map == NULL) |
b34976b6 | 3636 | return FALSE; |
f0abc2a1 | 3637 | ppc64_elf_section_data (sec)->opd.func_sec = opd_sym_map; |
1e2f5b6e | 3638 | } |
5bd4f169 | 3639 | |
82bd7b59 AM |
3640 | if (htab->sfpr == NULL |
3641 | && !create_linkage_sections (htab->elf.dynobj, info)) | |
b34976b6 | 3642 | return FALSE; |
82bd7b59 | 3643 | |
5bd4f169 AM |
3644 | rel_end = relocs + sec->reloc_count; |
3645 | for (rel = relocs; rel < rel_end; rel++) | |
3646 | { | |
3647 | unsigned long r_symndx; | |
3648 | struct elf_link_hash_entry *h; | |
04c9666a | 3649 | enum elf_ppc64_reloc_type r_type; |
411e1bfb | 3650 | int tls_type = 0; |
5bd4f169 AM |
3651 | |
3652 | r_symndx = ELF64_R_SYM (rel->r_info); | |
3653 | if (r_symndx < symtab_hdr->sh_info) | |
3654 | h = NULL; | |
3655 | else | |
3656 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
3657 | ||
4ce794b7 | 3658 | r_type = ELF64_R_TYPE (rel->r_info); |
a33d1f77 | 3659 | switch (r_type) |
5bd4f169 | 3660 | { |
411e1bfb AM |
3661 | case R_PPC64_GOT_TLSLD16: |
3662 | case R_PPC64_GOT_TLSLD16_LO: | |
3663 | case R_PPC64_GOT_TLSLD16_HI: | |
3664 | case R_PPC64_GOT_TLSLD16_HA: | |
e717da7e | 3665 | ppc64_tlsld_got (abfd)->refcount += 1; |
951fd09b | 3666 | tls_type = TLS_TLS | TLS_LD; |
411e1bfb AM |
3667 | goto dogottls; |
3668 | ||
3669 | case R_PPC64_GOT_TLSGD16: | |
3670 | case R_PPC64_GOT_TLSGD16_LO: | |
3671 | case R_PPC64_GOT_TLSGD16_HI: | |
3672 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b | 3673 | tls_type = TLS_TLS | TLS_GD; |
411e1bfb AM |
3674 | goto dogottls; |
3675 | ||
3676 | case R_PPC64_GOT_TPREL16_DS: | |
3677 | case R_PPC64_GOT_TPREL16_LO_DS: | |
3678 | case R_PPC64_GOT_TPREL16_HI: | |
3679 | case R_PPC64_GOT_TPREL16_HA: | |
3680 | if (info->shared) | |
3681 | info->flags |= DF_STATIC_TLS; | |
3682 | tls_type = TLS_TLS | TLS_TPREL; | |
3683 | goto dogottls; | |
3684 | ||
3685 | case R_PPC64_GOT_DTPREL16_DS: | |
3686 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
3687 | case R_PPC64_GOT_DTPREL16_HI: | |
3688 | case R_PPC64_GOT_DTPREL16_HA: | |
3689 | tls_type = TLS_TLS | TLS_DTPREL; | |
3690 | dogottls: | |
3691 | sec->has_tls_reloc = 1; | |
3692 | /* Fall thru */ | |
3693 | ||
5bd4f169 | 3694 | case R_PPC64_GOT16: |
5bd4f169 | 3695 | case R_PPC64_GOT16_DS: |
65f38f15 AM |
3696 | case R_PPC64_GOT16_HA: |
3697 | case R_PPC64_GOT16_HI: | |
3698 | case R_PPC64_GOT16_LO: | |
5bd4f169 | 3699 | case R_PPC64_GOT16_LO_DS: |
65f38f15 | 3700 | /* This symbol requires a global offset table entry. */ |
ad8e1ba5 | 3701 | sec->has_gp_reloc = 1; |
e717da7e AM |
3702 | if (ppc64_elf_tdata (abfd)->got == NULL |
3703 | && !create_got_section (abfd, info)) | |
b34976b6 | 3704 | return FALSE; |
5bd4f169 AM |
3705 | |
3706 | if (h != NULL) | |
3707 | { | |
411e1bfb AM |
3708 | struct ppc_link_hash_entry *eh; |
3709 | struct got_entry *ent; | |
65f38f15 | 3710 | |
411e1bfb AM |
3711 | eh = (struct ppc_link_hash_entry *) h; |
3712 | for (ent = eh->elf.got.glist; ent != NULL; ent = ent->next) | |
3713 | if (ent->addend == rel->r_addend | |
e717da7e | 3714 | && ent->owner == abfd |
411e1bfb AM |
3715 | && ent->tls_type == tls_type) |
3716 | break; | |
3717 | if (ent == NULL) | |
5bd4f169 | 3718 | { |
411e1bfb | 3719 | bfd_size_type amt = sizeof (*ent); |
4ce794b7 | 3720 | ent = bfd_alloc (abfd, amt); |
411e1bfb | 3721 | if (ent == NULL) |
b34976b6 | 3722 | return FALSE; |
411e1bfb AM |
3723 | ent->next = eh->elf.got.glist; |
3724 | ent->addend = rel->r_addend; | |
e717da7e | 3725 | ent->owner = abfd; |
411e1bfb AM |
3726 | ent->tls_type = tls_type; |
3727 | ent->got.refcount = 0; | |
3728 | eh->elf.got.glist = ent; | |
5bd4f169 | 3729 | } |
411e1bfb | 3730 | ent->got.refcount += 1; |
e7b938ca | 3731 | eh->tls_mask |= tls_type; |
5bd4f169 | 3732 | } |
411e1bfb AM |
3733 | else |
3734 | /* This is a global offset table entry for a local symbol. */ | |
3735 | if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
3736 | rel->r_addend, tls_type)) | |
3737 | return FALSE; | |
5bd4f169 AM |
3738 | break; |
3739 | ||
5bd4f169 | 3740 | case R_PPC64_PLT16_HA: |
65f38f15 AM |
3741 | case R_PPC64_PLT16_HI: |
3742 | case R_PPC64_PLT16_LO: | |
3743 | case R_PPC64_PLT32: | |
3744 | case R_PPC64_PLT64: | |
5bd4f169 | 3745 | /* This symbol requires a procedure linkage table entry. We |
3fad3c7c AM |
3746 | actually build the entry in adjust_dynamic_symbol, |
3747 | because this might be a case of linking PIC code without | |
3748 | linking in any dynamic objects, in which case we don't | |
3749 | need to generate a procedure linkage table after all. */ | |
5bd4f169 AM |
3750 | if (h == NULL) |
3751 | { | |
3752 | /* It does not make sense to have a procedure linkage | |
3fad3c7c | 3753 | table entry for a local symbol. */ |
5bd4f169 | 3754 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 3755 | return FALSE; |
5bd4f169 | 3756 | } |
411e1bfb AM |
3757 | else |
3758 | if (!update_plt_info (abfd, (struct ppc_link_hash_entry *) h, | |
3759 | rel->r_addend)) | |
3760 | return FALSE; | |
5bd4f169 AM |
3761 | break; |
3762 | ||
3763 | /* The following relocations don't need to propagate the | |
3764 | relocation if linking a shared object since they are | |
3765 | section relative. */ | |
3766 | case R_PPC64_SECTOFF: | |
3767 | case R_PPC64_SECTOFF_LO: | |
3768 | case R_PPC64_SECTOFF_HI: | |
3769 | case R_PPC64_SECTOFF_HA: | |
3770 | case R_PPC64_SECTOFF_DS: | |
3771 | case R_PPC64_SECTOFF_LO_DS: | |
411e1bfb AM |
3772 | case R_PPC64_DTPREL16: |
3773 | case R_PPC64_DTPREL16_LO: | |
3774 | case R_PPC64_DTPREL16_HI: | |
3775 | case R_PPC64_DTPREL16_HA: | |
3776 | case R_PPC64_DTPREL16_DS: | |
3777 | case R_PPC64_DTPREL16_LO_DS: | |
3778 | case R_PPC64_DTPREL16_HIGHER: | |
3779 | case R_PPC64_DTPREL16_HIGHERA: | |
3780 | case R_PPC64_DTPREL16_HIGHEST: | |
3781 | case R_PPC64_DTPREL16_HIGHESTA: | |
5bd4f169 AM |
3782 | break; |
3783 | ||
ad8e1ba5 AM |
3784 | /* Nor do these. */ |
3785 | case R_PPC64_TOC16: | |
3786 | case R_PPC64_TOC16_LO: | |
3787 | case R_PPC64_TOC16_HI: | |
3788 | case R_PPC64_TOC16_HA: | |
3789 | case R_PPC64_TOC16_DS: | |
3790 | case R_PPC64_TOC16_LO_DS: | |
3791 | sec->has_gp_reloc = 1; | |
3792 | break; | |
3793 | ||
5bd4f169 AM |
3794 | /* This relocation describes the C++ object vtable hierarchy. |
3795 | Reconstruct it for later use during GC. */ | |
3796 | case R_PPC64_GNU_VTINHERIT: | |
c152c796 | 3797 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
b34976b6 | 3798 | return FALSE; |
5bd4f169 AM |
3799 | break; |
3800 | ||
3801 | /* This relocation describes which C++ vtable entries are actually | |
3802 | used. Record for later use during GC. */ | |
3803 | case R_PPC64_GNU_VTENTRY: | |
c152c796 | 3804 | if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) |
b34976b6 | 3805 | return FALSE; |
5bd4f169 AM |
3806 | break; |
3807 | ||
721956f4 AM |
3808 | case R_PPC64_REL14: |
3809 | case R_PPC64_REL14_BRTAKEN: | |
3810 | case R_PPC64_REL14_BRNTAKEN: | |
3811 | htab->has_14bit_branch = 1; | |
3812 | /* Fall through. */ | |
3813 | ||
5d1634d7 | 3814 | case R_PPC64_REL24: |
e86ce104 AM |
3815 | if (h != NULL |
3816 | && h->root.root.string[0] == '.' | |
3817 | && h->root.root.string[1] != 0) | |
5d1634d7 AM |
3818 | { |
3819 | /* We may need a .plt entry if the function this reloc | |
3820 | refers to is in a shared lib. */ | |
411e1bfb AM |
3821 | if (!update_plt_info (abfd, (struct ppc_link_hash_entry *) h, |
3822 | rel->r_addend)) | |
3823 | return FALSE; | |
3824 | if (h == htab->tls_get_addr) | |
3825 | sec->has_tls_reloc = 1; | |
a48ebf4d AM |
3826 | else if ((strncmp (h->root.root.string, ".__tls_get_addr", 15) |
3827 | == 0) | |
3828 | && (h->root.root.string[15] == 0 | |
3829 | || h->root.root.string[15] == '@')) | |
411e1bfb AM |
3830 | { |
3831 | htab->tls_get_addr = h; | |
3832 | sec->has_tls_reloc = 1; | |
3833 | } | |
3834 | } | |
3835 | break; | |
3836 | ||
3837 | case R_PPC64_TPREL64: | |
3838 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_TPREL; | |
3839 | if (info->shared) | |
3840 | info->flags |= DF_STATIC_TLS; | |
3841 | goto dotlstoc; | |
3842 | ||
3843 | case R_PPC64_DTPMOD64: | |
3844 | if (rel + 1 < rel_end | |
3845 | && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64) | |
3846 | && rel[1].r_offset == rel->r_offset + 8) | |
951fd09b | 3847 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_GD; |
411e1bfb | 3848 | else |
951fd09b | 3849 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_LD; |
411e1bfb AM |
3850 | goto dotlstoc; |
3851 | ||
3852 | case R_PPC64_DTPREL64: | |
3853 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_DTPREL; | |
3854 | if (rel != relocs | |
3855 | && rel[-1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPMOD64) | |
3856 | && rel[-1].r_offset == rel->r_offset - 8) | |
3857 | /* This is the second reloc of a dtpmod, dtprel pair. | |
3858 | Don't mark with TLS_DTPREL. */ | |
3859 | goto dodyn; | |
3860 | ||
3861 | dotlstoc: | |
3862 | sec->has_tls_reloc = 1; | |
3863 | if (h != NULL) | |
3864 | { | |
3865 | struct ppc_link_hash_entry *eh; | |
3866 | eh = (struct ppc_link_hash_entry *) h; | |
e7b938ca | 3867 | eh->tls_mask |= tls_type; |
411e1bfb AM |
3868 | } |
3869 | else | |
3870 | if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
3871 | rel->r_addend, tls_type)) | |
3872 | return FALSE; | |
3873 | ||
3874 | if (ppc64_elf_section_data (sec)->t_symndx == NULL) | |
3875 | { | |
e7b938ca | 3876 | /* One extra to simplify get_tls_mask. */ |
eea6121a | 3877 | bfd_size_type amt = sec->size * sizeof (unsigned) / 8 + 1; |
4ce794b7 | 3878 | ppc64_elf_section_data (sec)->t_symndx = bfd_zalloc (abfd, amt); |
411e1bfb AM |
3879 | if (ppc64_elf_section_data (sec)->t_symndx == NULL) |
3880 | return FALSE; | |
3881 | } | |
3882 | BFD_ASSERT (rel->r_offset % 8 == 0); | |
3883 | ppc64_elf_section_data (sec)->t_symndx[rel->r_offset / 8] = r_symndx; | |
951fd09b AM |
3884 | |
3885 | /* Mark the second slot of a GD or LD entry. | |
3886 | -1 to indicate GD and -2 to indicate LD. */ | |
3887 | if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_GD)) | |
3888 | ppc64_elf_section_data (sec)->t_symndx[rel->r_offset / 8 + 1] = -1; | |
3889 | else if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_LD)) | |
3890 | ppc64_elf_section_data (sec)->t_symndx[rel->r_offset / 8 + 1] = -2; | |
411e1bfb AM |
3891 | goto dodyn; |
3892 | ||
3893 | case R_PPC64_TPREL16: | |
3894 | case R_PPC64_TPREL16_LO: | |
3895 | case R_PPC64_TPREL16_HI: | |
3896 | case R_PPC64_TPREL16_HA: | |
3897 | case R_PPC64_TPREL16_DS: | |
3898 | case R_PPC64_TPREL16_LO_DS: | |
3899 | case R_PPC64_TPREL16_HIGHER: | |
3900 | case R_PPC64_TPREL16_HIGHERA: | |
3901 | case R_PPC64_TPREL16_HIGHEST: | |
3902 | case R_PPC64_TPREL16_HIGHESTA: | |
3903 | if (info->shared) | |
3904 | { | |
3905 | info->flags |= DF_STATIC_TLS; | |
3906 | goto dodyn; | |
5d1634d7 AM |
3907 | } |
3908 | break; | |
3909 | ||
e86ce104 | 3910 | case R_PPC64_ADDR64: |
1e2f5b6e | 3911 | if (opd_sym_map != NULL |
e86ce104 AM |
3912 | && h != NULL |
3913 | && h->root.root.string[0] == '.' | |
3914 | && h->root.root.string[1] != 0) | |
50bc7936 | 3915 | get_fdh ((struct ppc_link_hash_entry *) h, htab); |
e86ce104 | 3916 | |
1e2f5b6e AM |
3917 | if (opd_sym_map != NULL |
3918 | && h == NULL | |
3919 | && rel + 1 < rel_end | |
4ce794b7 | 3920 | && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC) |
1e2f5b6e AM |
3921 | { |
3922 | asection *s; | |
3923 | ||
3924 | s = bfd_section_from_r_symndx (abfd, &htab->sym_sec, sec, | |
3925 | r_symndx); | |
3926 | if (s == NULL) | |
b34976b6 | 3927 | return FALSE; |
1e2f5b6e AM |
3928 | else if (s != sec) |
3929 | opd_sym_map[rel->r_offset / 24] = s; | |
3930 | } | |
e86ce104 AM |
3931 | /* Fall through. */ |
3932 | ||
04c9666a | 3933 | case R_PPC64_REL30: |
5bd4f169 | 3934 | case R_PPC64_REL32: |
04c9666a | 3935 | case R_PPC64_REL64: |
65f38f15 AM |
3936 | case R_PPC64_ADDR14: |
3937 | case R_PPC64_ADDR14_BRNTAKEN: | |
3938 | case R_PPC64_ADDR14_BRTAKEN: | |
3939 | case R_PPC64_ADDR16: | |
3940 | case R_PPC64_ADDR16_DS: | |
3941 | case R_PPC64_ADDR16_HA: | |
3942 | case R_PPC64_ADDR16_HI: | |
3943 | case R_PPC64_ADDR16_HIGHER: | |
3944 | case R_PPC64_ADDR16_HIGHERA: | |
3945 | case R_PPC64_ADDR16_HIGHEST: | |
3946 | case R_PPC64_ADDR16_HIGHESTA: | |
3947 | case R_PPC64_ADDR16_LO: | |
3948 | case R_PPC64_ADDR16_LO_DS: | |
3949 | case R_PPC64_ADDR24: | |
65f38f15 | 3950 | case R_PPC64_ADDR32: |
65f38f15 AM |
3951 | case R_PPC64_UADDR16: |
3952 | case R_PPC64_UADDR32: | |
3953 | case R_PPC64_UADDR64: | |
5bd4f169 | 3954 | case R_PPC64_TOC: |
81848ca0 AM |
3955 | if (h != NULL && !info->shared) |
3956 | /* We may need a copy reloc. */ | |
3957 | h->elf_link_hash_flags |= ELF_LINK_NON_GOT_REF; | |
3958 | ||
41bd81ab | 3959 | /* Don't propagate .opd relocs. */ |
1e2f5b6e | 3960 | if (NO_OPD_RELOCS && opd_sym_map != NULL) |
e86ce104 | 3961 | break; |
e86ce104 | 3962 | |
65f38f15 AM |
3963 | /* If we are creating a shared library, and this is a reloc |
3964 | against a global symbol, or a non PC relative reloc | |
3965 | against a local symbol, then we need to copy the reloc | |
3966 | into the shared library. However, if we are linking with | |
3967 | -Bsymbolic, we do not need to copy a reloc against a | |
3968 | global symbol which is defined in an object we are | |
3969 | including in the link (i.e., DEF_REGULAR is set). At | |
3970 | this point we have not seen all the input files, so it is | |
3971 | possible that DEF_REGULAR is not set now but will be set | |
3972 | later (it is never cleared). In case of a weak definition, | |
3973 | DEF_REGULAR may be cleared later by a strong definition in | |
3974 | a shared library. We account for that possibility below by | |
f4656909 | 3975 | storing information in the dyn_relocs field of the hash |
65f38f15 AM |
3976 | table entry. A similar situation occurs when creating |
3977 | shared libraries and symbol visibility changes render the | |
3978 | symbol local. | |
3979 | ||
3980 | If on the other hand, we are creating an executable, we | |
3981 | may need to keep relocations for symbols satisfied by a | |
3982 | dynamic library if we manage to avoid copy relocs for the | |
3983 | symbol. */ | |
411e1bfb | 3984 | dodyn: |
65f38f15 | 3985 | if ((info->shared |
411e1bfb | 3986 | && (MUST_BE_DYN_RELOC (r_type) |
65f38f15 AM |
3987 | || (h != NULL |
3988 | && (! info->symbolic | |
3989 | || h->root.type == bfd_link_hash_defweak | |
3990 | || (h->elf_link_hash_flags | |
3991 | & ELF_LINK_HASH_DEF_REGULAR) == 0)))) | |
f4656909 AM |
3992 | || (ELIMINATE_COPY_RELOCS |
3993 | && !info->shared | |
65f38f15 AM |
3994 | && h != NULL |
3995 | && (h->root.type == bfd_link_hash_defweak | |
3996 | || (h->elf_link_hash_flags | |
3997 | & ELF_LINK_HASH_DEF_REGULAR) == 0))) | |
5bd4f169 | 3998 | { |
ec338859 AM |
3999 | struct ppc_dyn_relocs *p; |
4000 | struct ppc_dyn_relocs **head; | |
4001 | ||
65f38f15 AM |
4002 | /* We must copy these reloc types into the output file. |
4003 | Create a reloc section in dynobj and make room for | |
4004 | this reloc. */ | |
5bd4f169 AM |
4005 | if (sreloc == NULL) |
4006 | { | |
4007 | const char *name; | |
65f38f15 | 4008 | bfd *dynobj; |
5bd4f169 AM |
4009 | |
4010 | name = (bfd_elf_string_from_elf_section | |
4011 | (abfd, | |
4012 | elf_elfheader (abfd)->e_shstrndx, | |
4013 | elf_section_data (sec)->rel_hdr.sh_name)); | |
4014 | if (name == NULL) | |
b34976b6 | 4015 | return FALSE; |
5bd4f169 | 4016 | |
65f38f15 AM |
4017 | if (strncmp (name, ".rela", 5) != 0 |
4018 | || strcmp (bfd_get_section_name (abfd, sec), | |
4019 | name + 5) != 0) | |
4020 | { | |
4021 | (*_bfd_error_handler) | |
4022 | (_("%s: bad relocation section name `%s\'"), | |
4023 | bfd_archive_filename (abfd), name); | |
5d1634d7 | 4024 | bfd_set_error (bfd_error_bad_value); |
65f38f15 AM |
4025 | } |
4026 | ||
65f38f15 | 4027 | dynobj = htab->elf.dynobj; |
5bd4f169 AM |
4028 | sreloc = bfd_get_section_by_name (dynobj, name); |
4029 | if (sreloc == NULL) | |
4030 | { | |
4031 | flagword flags; | |
4032 | ||
4033 | sreloc = bfd_make_section (dynobj, name); | |
4034 | flags = (SEC_HAS_CONTENTS | SEC_READONLY | |
4035 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
4036 | if ((sec->flags & SEC_ALLOC) != 0) | |
4037 | flags |= SEC_ALLOC | SEC_LOAD; | |
4038 | if (sreloc == NULL | |
4039 | || ! bfd_set_section_flags (dynobj, sreloc, flags) | |
65f38f15 | 4040 | || ! bfd_set_section_alignment (dynobj, sreloc, 3)) |
b34976b6 | 4041 | return FALSE; |
5bd4f169 | 4042 | } |
65f38f15 | 4043 | elf_section_data (sec)->sreloc = sreloc; |
5bd4f169 AM |
4044 | } |
4045 | ||
65f38f15 AM |
4046 | /* If this is a global symbol, we count the number of |
4047 | relocations we need for this symbol. */ | |
4048 | if (h != NULL) | |
4049 | { | |
ec338859 | 4050 | head = &((struct ppc_link_hash_entry *) h)->dyn_relocs; |
65f38f15 AM |
4051 | } |
4052 | else | |
4053 | { | |
ec338859 AM |
4054 | /* Track dynamic relocs needed for local syms too. |
4055 | We really need local syms available to do this | |
4056 | easily. Oh well. */ | |
4057 | ||
4058 | asection *s; | |
4059 | s = bfd_section_from_r_symndx (abfd, &htab->sym_sec, | |
4060 | sec, r_symndx); | |
4061 | if (s == NULL) | |
b34976b6 | 4062 | return FALSE; |
ec338859 AM |
4063 | |
4064 | head = ((struct ppc_dyn_relocs **) | |
4065 | &elf_section_data (s)->local_dynrel); | |
65f38f15 | 4066 | } |
ec338859 AM |
4067 | |
4068 | p = *head; | |
4069 | if (p == NULL || p->sec != sec) | |
4070 | { | |
4ce794b7 | 4071 | p = bfd_alloc (htab->elf.dynobj, sizeof *p); |
ec338859 | 4072 | if (p == NULL) |
b34976b6 | 4073 | return FALSE; |
ec338859 AM |
4074 | p->next = *head; |
4075 | *head = p; | |
4076 | p->sec = sec; | |
4077 | p->count = 0; | |
4078 | p->pc_count = 0; | |
4079 | } | |
4080 | ||
4081 | p->count += 1; | |
411e1bfb | 4082 | if (!MUST_BE_DYN_RELOC (r_type)) |
ec338859 | 4083 | p->pc_count += 1; |
65f38f15 | 4084 | } |
5bd4f169 | 4085 | break; |
65f38f15 AM |
4086 | |
4087 | default: | |
96e0dda4 | 4088 | break; |
5bd4f169 AM |
4089 | } |
4090 | } | |
4091 | ||
b34976b6 | 4092 | return TRUE; |
5bd4f169 AM |
4093 | } |
4094 | ||
4095 | /* Return the section that should be marked against GC for a given | |
4096 | relocation. */ | |
4097 | ||
4098 | static asection * | |
4ce794b7 | 4099 | ppc64_elf_gc_mark_hook (asection *sec, |
ccfa59ea | 4100 | struct bfd_link_info *info, |
4ce794b7 AM |
4101 | Elf_Internal_Rela *rel, |
4102 | struct elf_link_hash_entry *h, | |
4103 | Elf_Internal_Sym *sym) | |
5bd4f169 | 4104 | { |
ccfa59ea AM |
4105 | asection *rsec; |
4106 | ||
4107 | /* First mark all our entry sym sections. */ | |
4108 | if (info->gc_sym_list != NULL) | |
4109 | { | |
4110 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
4111 | struct bfd_sym_chain *sym = info->gc_sym_list; | |
4112 | ||
4113 | info->gc_sym_list = NULL; | |
4114 | do | |
4115 | { | |
4116 | struct ppc_link_hash_entry *eh; | |
4117 | ||
4118 | eh = (struct ppc_link_hash_entry *) | |
4119 | elf_link_hash_lookup (&htab->elf, sym->name, FALSE, FALSE, FALSE); | |
4120 | if (eh == NULL) | |
4121 | continue; | |
4122 | if (eh->elf.root.type != bfd_link_hash_defined | |
4123 | && eh->elf.root.type != bfd_link_hash_defweak) | |
4124 | continue; | |
4125 | ||
4126 | if (eh->is_func_descriptor) | |
4127 | rsec = eh->oh->elf.root.u.def.section; | |
4128 | else | |
4129 | continue; | |
4130 | ||
4131 | if (!rsec->gc_mark) | |
4132 | _bfd_elf_gc_mark (info, rsec, ppc64_elf_gc_mark_hook); | |
4133 | ||
4134 | rsec = eh->elf.root.u.def.section; | |
4135 | if (!rsec->gc_mark) | |
4136 | _bfd_elf_gc_mark (info, rsec, ppc64_elf_gc_mark_hook); | |
4137 | ||
4138 | sym = sym->next; | |
4139 | } | |
4140 | while (sym != NULL); | |
4141 | } | |
4142 | ||
4143 | /* Syms return NULL if we're marking .opd, so we avoid marking all | |
4144 | function sections, as all functions are referenced in .opd. */ | |
4145 | rsec = NULL; | |
4146 | if (get_opd_info (sec) != NULL) | |
4147 | return rsec; | |
1e2f5b6e | 4148 | |
5bd4f169 AM |
4149 | if (h != NULL) |
4150 | { | |
04c9666a | 4151 | enum elf_ppc64_reloc_type r_type; |
ccfa59ea | 4152 | struct ppc_link_hash_entry *eh; |
a33d1f77 | 4153 | |
4ce794b7 | 4154 | r_type = ELF64_R_TYPE (rel->r_info); |
a33d1f77 | 4155 | switch (r_type) |
5bd4f169 AM |
4156 | { |
4157 | case R_PPC64_GNU_VTINHERIT: | |
4158 | case R_PPC64_GNU_VTENTRY: | |
4159 | break; | |
4160 | ||
4161 | default: | |
4162 | switch (h->root.type) | |
4163 | { | |
4164 | case bfd_link_hash_defined: | |
4165 | case bfd_link_hash_defweak: | |
ccfa59ea AM |
4166 | eh = (struct ppc_link_hash_entry *) h; |
4167 | if (eh->oh != NULL && eh->oh->is_func_descriptor) | |
4168 | eh = eh->oh; | |
1e2f5b6e AM |
4169 | |
4170 | /* Function descriptor syms cause the associated | |
4171 | function code sym section to be marked. */ | |
ccfa59ea AM |
4172 | if (eh->is_func_descriptor) |
4173 | { | |
4174 | /* They also mark their opd section. */ | |
4175 | if (!eh->elf.root.u.def.section->gc_mark) | |
4176 | _bfd_elf_gc_mark (info, eh->elf.root.u.def.section, | |
4177 | ppc64_elf_gc_mark_hook); | |
4178 | ||
4179 | rsec = eh->oh->elf.root.u.def.section; | |
4180 | } | |
4181 | else | |
1e2f5b6e AM |
4182 | rsec = h->root.u.def.section; |
4183 | break; | |
5bd4f169 AM |
4184 | |
4185 | case bfd_link_hash_common: | |
1e2f5b6e AM |
4186 | rsec = h->root.u.c.p->section; |
4187 | break; | |
5bd4f169 AM |
4188 | |
4189 | default: | |
4190 | break; | |
4191 | } | |
4192 | } | |
4193 | } | |
4194 | else | |
4195 | { | |
1e2f5b6e AM |
4196 | asection **opd_sym_section; |
4197 | ||
4198 | rsec = bfd_section_from_elf_index (sec->owner, sym->st_shndx); | |
ccfa59ea | 4199 | opd_sym_section = get_opd_info (rsec); |
1e2f5b6e | 4200 | if (opd_sym_section != NULL) |
ccfa59ea AM |
4201 | { |
4202 | if (!rsec->gc_mark) | |
4203 | _bfd_elf_gc_mark (info, rsec, ppc64_elf_gc_mark_hook); | |
4204 | ||
4205 | rsec = opd_sym_section[sym->st_value / 24]; | |
4206 | } | |
5bd4f169 AM |
4207 | } |
4208 | ||
1e2f5b6e | 4209 | return rsec; |
5bd4f169 AM |
4210 | } |
4211 | ||
65f38f15 AM |
4212 | /* Update the .got, .plt. and dynamic reloc reference counts for the |
4213 | section being removed. */ | |
5bd4f169 | 4214 | |
b34976b6 | 4215 | static bfd_boolean |
4ce794b7 AM |
4216 | ppc64_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info, |
4217 | asection *sec, const Elf_Internal_Rela *relocs) | |
5bd4f169 | 4218 | { |
411e1bfb | 4219 | struct ppc_link_hash_table *htab; |
5bd4f169 AM |
4220 | Elf_Internal_Shdr *symtab_hdr; |
4221 | struct elf_link_hash_entry **sym_hashes; | |
411e1bfb | 4222 | struct got_entry **local_got_ents; |
5bd4f169 | 4223 | const Elf_Internal_Rela *rel, *relend; |
5bd4f169 | 4224 | |
680a3378 AM |
4225 | if ((sec->flags & SEC_ALLOC) == 0) |
4226 | return TRUE; | |
4227 | ||
ec338859 AM |
4228 | elf_section_data (sec)->local_dynrel = NULL; |
4229 | ||
411e1bfb | 4230 | htab = ppc_hash_table (info); |
5bd4f169 AM |
4231 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
4232 | sym_hashes = elf_sym_hashes (abfd); | |
411e1bfb | 4233 | local_got_ents = elf_local_got_ents (abfd); |
5bd4f169 AM |
4234 | |
4235 | relend = relocs + sec->reloc_count; | |
4236 | for (rel = relocs; rel < relend; rel++) | |
a33d1f77 AM |
4237 | { |
4238 | unsigned long r_symndx; | |
04c9666a | 4239 | enum elf_ppc64_reloc_type r_type; |
58ac9f71 | 4240 | struct elf_link_hash_entry *h = NULL; |
411e1bfb | 4241 | char tls_type = 0; |
5bd4f169 | 4242 | |
a33d1f77 | 4243 | r_symndx = ELF64_R_SYM (rel->r_info); |
4ce794b7 | 4244 | r_type = ELF64_R_TYPE (rel->r_info); |
58ac9f71 AM |
4245 | if (r_symndx >= symtab_hdr->sh_info) |
4246 | { | |
4247 | struct ppc_link_hash_entry *eh; | |
4248 | struct ppc_dyn_relocs **pp; | |
4249 | struct ppc_dyn_relocs *p; | |
4250 | ||
4251 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
4252 | eh = (struct ppc_link_hash_entry *) h; | |
4253 | ||
4254 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next) | |
4255 | if (p->sec == sec) | |
4256 | { | |
4257 | /* Everything must go for SEC. */ | |
4258 | *pp = p->next; | |
4259 | break; | |
4260 | } | |
4261 | } | |
4262 | ||
a33d1f77 AM |
4263 | switch (r_type) |
4264 | { | |
411e1bfb AM |
4265 | case R_PPC64_GOT_TLSLD16: |
4266 | case R_PPC64_GOT_TLSLD16_LO: | |
4267 | case R_PPC64_GOT_TLSLD16_HI: | |
4268 | case R_PPC64_GOT_TLSLD16_HA: | |
e717da7e | 4269 | ppc64_tlsld_got (abfd)->refcount -= 1; |
951fd09b | 4270 | tls_type = TLS_TLS | TLS_LD; |
411e1bfb AM |
4271 | goto dogot; |
4272 | ||
4273 | case R_PPC64_GOT_TLSGD16: | |
4274 | case R_PPC64_GOT_TLSGD16_LO: | |
4275 | case R_PPC64_GOT_TLSGD16_HI: | |
4276 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b | 4277 | tls_type = TLS_TLS | TLS_GD; |
411e1bfb AM |
4278 | goto dogot; |
4279 | ||
4280 | case R_PPC64_GOT_TPREL16_DS: | |
4281 | case R_PPC64_GOT_TPREL16_LO_DS: | |
4282 | case R_PPC64_GOT_TPREL16_HI: | |
4283 | case R_PPC64_GOT_TPREL16_HA: | |
4284 | tls_type = TLS_TLS | TLS_TPREL; | |
4285 | goto dogot; | |
4286 | ||
4287 | case R_PPC64_GOT_DTPREL16_DS: | |
4288 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
4289 | case R_PPC64_GOT_DTPREL16_HI: | |
4290 | case R_PPC64_GOT_DTPREL16_HA: | |
4291 | tls_type = TLS_TLS | TLS_DTPREL; | |
4292 | goto dogot; | |
4293 | ||
a33d1f77 AM |
4294 | case R_PPC64_GOT16: |
4295 | case R_PPC64_GOT16_DS: | |
4296 | case R_PPC64_GOT16_HA: | |
4297 | case R_PPC64_GOT16_HI: | |
4298 | case R_PPC64_GOT16_LO: | |
4299 | case R_PPC64_GOT16_LO_DS: | |
411e1bfb AM |
4300 | dogot: |
4301 | { | |
4302 | struct got_entry *ent; | |
4303 | ||
58ac9f71 AM |
4304 | if (h != NULL) |
4305 | ent = h->got.glist; | |
411e1bfb AM |
4306 | else |
4307 | ent = local_got_ents[r_symndx]; | |
4308 | ||
4309 | for (; ent != NULL; ent = ent->next) | |
4310 | if (ent->addend == rel->r_addend | |
e717da7e | 4311 | && ent->owner == abfd |
411e1bfb AM |
4312 | && ent->tls_type == tls_type) |
4313 | break; | |
4314 | if (ent == NULL) | |
4315 | abort (); | |
4316 | if (ent->got.refcount > 0) | |
4317 | ent->got.refcount -= 1; | |
4318 | } | |
a33d1f77 | 4319 | break; |
65f38f15 | 4320 | |
a33d1f77 AM |
4321 | case R_PPC64_PLT16_HA: |
4322 | case R_PPC64_PLT16_HI: | |
4323 | case R_PPC64_PLT16_LO: | |
4324 | case R_PPC64_PLT32: | |
4325 | case R_PPC64_PLT64: | |
721956f4 AM |
4326 | case R_PPC64_REL14: |
4327 | case R_PPC64_REL14_BRNTAKEN: | |
4328 | case R_PPC64_REL14_BRTAKEN: | |
5d1634d7 | 4329 | case R_PPC64_REL24: |
58ac9f71 | 4330 | if (h != NULL) |
5d1634d7 | 4331 | { |
411e1bfb AM |
4332 | struct plt_entry *ent; |
4333 | ||
411e1bfb AM |
4334 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) |
4335 | if (ent->addend == rel->r_addend) | |
4336 | break; | |
4337 | if (ent == NULL) | |
4338 | abort (); | |
4339 | if (ent->plt.refcount > 0) | |
4340 | ent->plt.refcount -= 1; | |
5d1634d7 | 4341 | } |
e86ce104 | 4342 | break; |
5d1634d7 | 4343 | |
a33d1f77 AM |
4344 | default: |
4345 | break; | |
4346 | } | |
4347 | } | |
b34976b6 | 4348 | return TRUE; |
5bd4f169 AM |
4349 | } |
4350 | ||
e86ce104 AM |
4351 | /* Called via elf_link_hash_traverse to transfer dynamic linking |
4352 | information on function code symbol entries to their corresponding | |
4353 | function descriptor symbol entries. */ | |
b34976b6 | 4354 | static bfd_boolean |
4ce794b7 | 4355 | func_desc_adjust (struct elf_link_hash_entry *h, void *inf) |
5bd4f169 | 4356 | { |
e86ce104 | 4357 | struct bfd_link_info *info; |
65f38f15 | 4358 | struct ppc_link_hash_table *htab; |
411e1bfb | 4359 | struct plt_entry *ent; |
50bc7936 AM |
4360 | struct ppc_link_hash_entry *fh; |
4361 | struct ppc_link_hash_entry *fdh; | |
4362 | bfd_boolean force_local; | |
5bd4f169 | 4363 | |
50bc7936 AM |
4364 | fh = (struct ppc_link_hash_entry *) h; |
4365 | if (fh->elf.root.type == bfd_link_hash_indirect) | |
b34976b6 | 4366 | return TRUE; |
e86ce104 | 4367 | |
50bc7936 AM |
4368 | if (fh->elf.root.type == bfd_link_hash_warning) |
4369 | fh = (struct ppc_link_hash_entry *) fh->elf.root.u.i.link; | |
e92d460e | 4370 | |
4ce794b7 | 4371 | info = inf; |
65f38f15 | 4372 | htab = ppc_hash_table (info); |
5bd4f169 | 4373 | |
e86ce104 AM |
4374 | /* If this is a function code symbol, transfer dynamic linking |
4375 | information to the function descriptor symbol. */ | |
50bc7936 | 4376 | if (!fh->is_func) |
b34976b6 | 4377 | return TRUE; |
e86ce104 | 4378 | |
50bc7936 | 4379 | for (ent = fh->elf.plt.plist; ent != NULL; ent = ent->next) |
411e1bfb AM |
4380 | if (ent->plt.refcount > 0) |
4381 | break; | |
50bc7936 AM |
4382 | if (ent == NULL |
4383 | || fh->elf.root.root.string[0] != '.' | |
4384 | || fh->elf.root.root.string[1] == '\0') | |
4385 | return TRUE; | |
5bd4f169 | 4386 | |
50bc7936 AM |
4387 | /* Find the corresponding function descriptor symbol. Create it |
4388 | as undefined if necessary. */ | |
5bd4f169 | 4389 | |
50bc7936 AM |
4390 | fdh = get_fdh (fh, htab); |
4391 | if (fdh != NULL) | |
4392 | while (fdh->elf.root.type == bfd_link_hash_indirect | |
4393 | || fdh->elf.root.type == bfd_link_hash_warning) | |
4394 | fdh = (struct ppc_link_hash_entry *) fdh->elf.root.u.i.link; | |
5bd4f169 | 4395 | |
50bc7936 AM |
4396 | if (fdh == NULL |
4397 | && info->shared | |
4398 | && (fh->elf.root.type == bfd_link_hash_undefined | |
4399 | || fh->elf.root.type == bfd_link_hash_undefweak)) | |
4400 | { | |
4401 | bfd *abfd; | |
4402 | asymbol *newsym; | |
4403 | struct bfd_link_hash_entry *bh; | |
4404 | ||
4405 | abfd = fh->elf.root.u.undef.abfd; | |
4406 | newsym = bfd_make_empty_symbol (abfd); | |
4407 | newsym->name = fh->elf.root.root.string + 1; | |
4408 | newsym->section = bfd_und_section_ptr; | |
4409 | newsym->value = 0; | |
4410 | newsym->flags = BSF_OBJECT; | |
4411 | if (fh->elf.root.type == bfd_link_hash_undefweak) | |
4412 | newsym->flags |= BSF_WEAK; | |
4413 | ||
4414 | bh = &fdh->elf.root; | |
4415 | if ( !(_bfd_generic_link_add_one_symbol | |
4416 | (info, abfd, newsym->name, newsym->flags, | |
4417 | newsym->section, newsym->value, NULL, FALSE, FALSE, &bh))) | |
648cca2c | 4418 | { |
50bc7936 | 4419 | return FALSE; |
648cca2c | 4420 | } |
50bc7936 AM |
4421 | fdh = (struct ppc_link_hash_entry *) bh; |
4422 | fdh->elf.elf_link_hash_flags &= ~ELF_LINK_NON_ELF; | |
4423 | fdh->elf.size = 24; | |
4424 | fdh->elf.type = STT_OBJECT; | |
4425 | } | |
648cca2c | 4426 | |
50bc7936 AM |
4427 | if (fdh != NULL |
4428 | && (fdh->elf.elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0 | |
4429 | && (info->shared | |
4430 | || (fdh->elf.elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0 | |
4431 | || (fdh->elf.elf_link_hash_flags & ELF_LINK_HASH_REF_DYNAMIC) != 0 | |
4432 | || (fdh->elf.root.type == bfd_link_hash_undefweak | |
4433 | && ELF_ST_VISIBILITY (fdh->elf.other) == STV_DEFAULT))) | |
4434 | { | |
4435 | if (fdh->elf.dynindx == -1) | |
c152c796 | 4436 | if (! bfd_elf_link_record_dynamic_symbol (info, &fdh->elf)) |
50bc7936 AM |
4437 | return FALSE; |
4438 | fdh->elf.elf_link_hash_flags | |
4439 | |= (fh->elf.elf_link_hash_flags & (ELF_LINK_HASH_REF_REGULAR | |
4440 | | ELF_LINK_HASH_REF_DYNAMIC | |
4441 | | ELF_LINK_HASH_REF_REGULAR_NONWEAK | |
4442 | | ELF_LINK_NON_GOT_REF)); | |
4443 | if (ELF_ST_VISIBILITY (fh->elf.other) == STV_DEFAULT) | |
e86ce104 | 4444 | { |
50bc7936 AM |
4445 | fdh->elf.plt.plist = fh->elf.plt.plist; |
4446 | fdh->elf.elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT; | |
e86ce104 | 4447 | } |
50bc7936 | 4448 | fdh->is_func_descriptor = 1; |
34814b9f AM |
4449 | fdh->oh = fh; |
4450 | fh->oh = fdh; | |
e86ce104 AM |
4451 | } |
4452 | ||
50bc7936 AM |
4453 | /* Now that the info is on the function descriptor, clear the |
4454 | function code sym info. Any function code syms for which we | |
4455 | don't have a definition in a regular file, we force local. | |
4456 | This prevents a shared library from exporting syms that have | |
4457 | been imported from another library. Function code syms that | |
4458 | are really in the library we must leave global to prevent the | |
4459 | linker dragging in a definition from a static library. */ | |
4460 | force_local | |
4461 | = (info->shared | |
4462 | && ((fh->elf.elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0 | |
4463 | || fdh == NULL | |
4464 | || (fdh->elf.elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0 | |
4465 | || (fdh->elf.elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0)); | |
4466 | _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local); | |
4467 | ||
b34976b6 | 4468 | return TRUE; |
e86ce104 | 4469 | } |
40b8271b | 4470 | |
82bd7b59 AM |
4471 | #define MIN_SAVE_FPR 14 |
4472 | #define MAX_SAVE_FPR 31 | |
4473 | ||
e86ce104 | 4474 | /* Called near the start of bfd_elf_size_dynamic_sections. We use |
82bd7b59 AM |
4475 | this hook to a) provide some gcc support functions, and b) transfer |
4476 | dynamic linking information gathered so far on function code symbol | |
4477 | entries, to their corresponding function descriptor symbol entries. */ | |
b34976b6 | 4478 | static bfd_boolean |
4ce794b7 AM |
4479 | ppc64_elf_func_desc_adjust (bfd *obfd ATTRIBUTE_UNUSED, |
4480 | struct bfd_link_info *info) | |
e86ce104 AM |
4481 | { |
4482 | struct ppc_link_hash_table *htab; | |
82bd7b59 AM |
4483 | unsigned int lowest_savef = MAX_SAVE_FPR + 2; |
4484 | unsigned int lowest_restf = MAX_SAVE_FPR + 2; | |
4485 | unsigned int i; | |
4486 | struct elf_link_hash_entry *h; | |
721956f4 | 4487 | bfd_byte *p; |
82bd7b59 | 4488 | char sym[10]; |
e86ce104 AM |
4489 | |
4490 | htab = ppc_hash_table (info); | |
82bd7b59 AM |
4491 | |
4492 | if (htab->sfpr == NULL) | |
4493 | /* We don't have any relocs. */ | |
b34976b6 | 4494 | return TRUE; |
82bd7b59 AM |
4495 | |
4496 | /* First provide any missing ._savef* and ._restf* functions. */ | |
4497 | memcpy (sym, "._savef14", 10); | |
4498 | for (i = MIN_SAVE_FPR; i <= MAX_SAVE_FPR; i++) | |
4499 | { | |
4500 | sym[7] = i / 10 + '0'; | |
4501 | sym[8] = i % 10 + '0'; | |
b34976b6 | 4502 | h = elf_link_hash_lookup (&htab->elf, sym, FALSE, FALSE, TRUE); |
82bd7b59 | 4503 | if (h != NULL |
772119ce | 4504 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0) |
82bd7b59 AM |
4505 | { |
4506 | if (lowest_savef > i) | |
4507 | lowest_savef = i; | |
4508 | h->root.type = bfd_link_hash_defined; | |
4509 | h->root.u.def.section = htab->sfpr; | |
4510 | h->root.u.def.value = (i - lowest_savef) * 4; | |
4511 | h->type = STT_FUNC; | |
4512 | h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR; | |
772119ce | 4513 | _bfd_elf_link_hash_hide_symbol (info, h, TRUE); |
82bd7b59 AM |
4514 | } |
4515 | } | |
4516 | ||
4517 | memcpy (sym, "._restf14", 10); | |
4518 | for (i = MIN_SAVE_FPR; i <= MAX_SAVE_FPR; i++) | |
4519 | { | |
4520 | sym[7] = i / 10 + '0'; | |
4521 | sym[8] = i % 10 + '0'; | |
b34976b6 | 4522 | h = elf_link_hash_lookup (&htab->elf, sym, FALSE, FALSE, TRUE); |
82bd7b59 | 4523 | if (h != NULL |
772119ce | 4524 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0) |
82bd7b59 AM |
4525 | { |
4526 | if (lowest_restf > i) | |
4527 | lowest_restf = i; | |
4528 | h->root.type = bfd_link_hash_defined; | |
4529 | h->root.u.def.section = htab->sfpr; | |
4530 | h->root.u.def.value = ((MAX_SAVE_FPR + 2 - lowest_savef) * 4 | |
4531 | + (i - lowest_restf) * 4); | |
4532 | h->type = STT_FUNC; | |
4533 | h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR; | |
772119ce | 4534 | _bfd_elf_link_hash_hide_symbol (info, h, TRUE); |
82bd7b59 AM |
4535 | } |
4536 | } | |
4537 | ||
4ce794b7 | 4538 | elf_link_hash_traverse (&htab->elf, func_desc_adjust, info); |
805fc799 | 4539 | |
eea6121a AM |
4540 | htab->sfpr->size = ((MAX_SAVE_FPR + 2 - lowest_savef) * 4 |
4541 | + (MAX_SAVE_FPR + 2 - lowest_restf) * 4); | |
82bd7b59 | 4542 | |
eea6121a | 4543 | if (htab->sfpr->size == 0) |
805fc799 | 4544 | { |
06da1e8e AM |
4545 | _bfd_strip_section_from_output (info, htab->sfpr); |
4546 | return TRUE; | |
805fc799 | 4547 | } |
82bd7b59 | 4548 | |
eea6121a | 4549 | p = bfd_alloc (htab->elf.dynobj, htab->sfpr->size); |
721956f4 | 4550 | if (p == NULL) |
b34976b6 | 4551 | return FALSE; |
721956f4 AM |
4552 | htab->sfpr->contents = p; |
4553 | ||
4554 | for (i = lowest_savef; i <= MAX_SAVE_FPR; i++) | |
4555 | { | |
4556 | unsigned int fpr = i << 21; | |
4557 | unsigned int stackoff = (1 << 16) - (MAX_SAVE_FPR + 1 - i) * 8; | |
4558 | bfd_put_32 (htab->elf.dynobj, STFD_FR0_0R1 + fpr + stackoff, p); | |
4559 | p += 4; | |
4560 | } | |
4561 | if (lowest_savef <= MAX_SAVE_FPR) | |
4562 | { | |
82bd7b59 AM |
4563 | bfd_put_32 (htab->elf.dynobj, BLR, p); |
4564 | p += 4; | |
721956f4 | 4565 | } |
82bd7b59 | 4566 | |
721956f4 AM |
4567 | for (i = lowest_restf; i <= MAX_SAVE_FPR; i++) |
4568 | { | |
4569 | unsigned int fpr = i << 21; | |
4570 | unsigned int stackoff = (1 << 16) - (MAX_SAVE_FPR + 1 - i) * 8; | |
4571 | bfd_put_32 (htab->elf.dynobj, LFD_FR0_0R1 + fpr + stackoff, p); | |
82bd7b59 AM |
4572 | p += 4; |
4573 | } | |
06da1e8e AM |
4574 | if (lowest_restf <= MAX_SAVE_FPR) |
4575 | bfd_put_32 (htab->elf.dynobj, BLR, p); | |
82bd7b59 | 4576 | |
b34976b6 | 4577 | return TRUE; |
e86ce104 AM |
4578 | } |
4579 | ||
4580 | /* Adjust a symbol defined by a dynamic object and referenced by a | |
4581 | regular object. The current definition is in some section of the | |
4582 | dynamic object, but we're not including those sections. We have to | |
4583 | change the definition to something the rest of the link can | |
4584 | understand. */ | |
4585 | ||
b34976b6 | 4586 | static bfd_boolean |
4ce794b7 AM |
4587 | ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info *info, |
4588 | struct elf_link_hash_entry *h) | |
e86ce104 AM |
4589 | { |
4590 | struct ppc_link_hash_table *htab; | |
e86ce104 AM |
4591 | asection *s; |
4592 | unsigned int power_of_two; | |
4593 | ||
4594 | htab = ppc_hash_table (info); | |
4595 | ||
4596 | /* Deal with function syms. */ | |
4597 | if (h->type == STT_FUNC | |
4598 | || (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0) | |
4599 | { | |
4600 | /* Clear procedure linkage table information for any symbol that | |
4601 | won't need a .plt entry. */ | |
411e1bfb AM |
4602 | struct plt_entry *ent; |
4603 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) | |
4604 | if (ent->plt.refcount > 0) | |
4605 | break; | |
e86ce104 | 4606 | if (!((struct ppc_link_hash_entry *) h)->is_func_descriptor |
411e1bfb | 4607 | || ent == NULL |
9c7a29a3 AM |
4608 | || SYMBOL_CALLS_LOCAL (info, h) |
4609 | || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
4610 | && h->root.type == bfd_link_hash_undefweak)) | |
40b8271b | 4611 | { |
411e1bfb | 4612 | h->plt.plist = NULL; |
40b8271b | 4613 | h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT; |
40b8271b | 4614 | } |
5bd4f169 | 4615 | } |
bbd7ec4a | 4616 | else |
411e1bfb | 4617 | h->plt.plist = NULL; |
5bd4f169 AM |
4618 | |
4619 | /* If this is a weak symbol, and there is a real definition, the | |
4620 | processor independent code will have arranged for us to see the | |
4621 | real definition first, and we can just use the same value. */ | |
4622 | if (h->weakdef != NULL) | |
4623 | { | |
4624 | BFD_ASSERT (h->weakdef->root.type == bfd_link_hash_defined | |
4625 | || h->weakdef->root.type == bfd_link_hash_defweak); | |
4626 | h->root.u.def.section = h->weakdef->root.u.def.section; | |
4627 | h->root.u.def.value = h->weakdef->root.u.def.value; | |
a23b6845 AM |
4628 | if (ELIMINATE_COPY_RELOCS) |
4629 | h->elf_link_hash_flags | |
4630 | = ((h->elf_link_hash_flags & ~ELF_LINK_NON_GOT_REF) | |
4631 | | (h->weakdef->elf_link_hash_flags & ELF_LINK_NON_GOT_REF)); | |
b34976b6 | 4632 | return TRUE; |
5bd4f169 AM |
4633 | } |
4634 | ||
5bd4f169 AM |
4635 | /* If we are creating a shared library, we must presume that the |
4636 | only references to the symbol are via the global offset table. | |
4637 | For such cases we need not do anything here; the relocations will | |
4638 | be handled correctly by relocate_section. */ | |
4639 | if (info->shared) | |
b34976b6 | 4640 | return TRUE; |
5bd4f169 | 4641 | |
65f38f15 AM |
4642 | /* If there are no references to this symbol that do not use the |
4643 | GOT, we don't need to generate a copy reloc. */ | |
4644 | if ((h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0) | |
b34976b6 | 4645 | return TRUE; |
65f38f15 | 4646 | |
f4656909 | 4647 | if (ELIMINATE_COPY_RELOCS) |
65f38f15 | 4648 | { |
f4656909 AM |
4649 | struct ppc_link_hash_entry * eh; |
4650 | struct ppc_dyn_relocs *p; | |
65f38f15 | 4651 | |
f4656909 AM |
4652 | eh = (struct ppc_link_hash_entry *) h; |
4653 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
4654 | { | |
4655 | s = p->sec->output_section; | |
4656 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
4657 | break; | |
4658 | } | |
4659 | ||
4660 | /* If we didn't find any dynamic relocs in read-only sections, then | |
4661 | we'll be keeping the dynamic relocs and avoiding the copy reloc. */ | |
4662 | if (p == NULL) | |
4663 | { | |
4664 | h->elf_link_hash_flags &= ~ELF_LINK_NON_GOT_REF; | |
4665 | return TRUE; | |
4666 | } | |
65f38f15 AM |
4667 | } |
4668 | ||
5d35169e | 4669 | if (h->plt.plist != NULL) |
97b639ba AM |
4670 | { |
4671 | /* We should never get here, but unfortunately there are versions | |
4672 | of gcc out there that improperly (for this ABI) put initialized | |
4673 | function pointers, vtable refs and suchlike in read-only | |
4674 | sections. Allow them to proceed, but warn that this might | |
4675 | break at runtime. */ | |
4676 | (*_bfd_error_handler) | |
4677 | (_("copy reloc against `%s' requires lazy plt linking; " | |
4678 | "avoid setting LD_BIND_NOW=1 or upgrade gcc"), | |
4679 | h->root.root.string); | |
4680 | } | |
5d35169e AM |
4681 | |
4682 | /* This is a reference to a symbol defined by a dynamic object which | |
4683 | is not a function. */ | |
4684 | ||
5bd4f169 AM |
4685 | /* We must allocate the symbol in our .dynbss section, which will |
4686 | become part of the .bss section of the executable. There will be | |
4687 | an entry for this symbol in the .dynsym section. The dynamic | |
4688 | object will contain position independent code, so all references | |
4689 | from the dynamic object to this symbol will go through the global | |
4690 | offset table. The dynamic linker will use the .dynsym entry to | |
4691 | determine the address it must put in the global offset table, so | |
4692 | both the dynamic object and the regular object will refer to the | |
4693 | same memory location for the variable. */ | |
5bd4f169 | 4694 | |
04c9666a AM |
4695 | /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker |
4696 | to copy the initial value out of the dynamic object and into the | |
5bd4f169 AM |
4697 | runtime process image. We need to remember the offset into the |
4698 | .rela.bss section we are going to use. */ | |
4699 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) | |
4700 | { | |
eea6121a | 4701 | htab->relbss->size += sizeof (Elf64_External_Rela); |
5bd4f169 AM |
4702 | h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_COPY; |
4703 | } | |
4704 | ||
4705 | /* We need to figure out the alignment required for this symbol. I | |
4706 | have no idea how ELF linkers handle this. */ | |
4707 | power_of_two = bfd_log2 (h->size); | |
4708 | if (power_of_two > 4) | |
4709 | power_of_two = 4; | |
4710 | ||
4711 | /* Apply the required alignment. */ | |
4ce794b7 | 4712 | s = htab->dynbss; |
eea6121a | 4713 | s->size = BFD_ALIGN (s->size, (bfd_size_type) (1 << power_of_two)); |
65f38f15 | 4714 | if (power_of_two > bfd_get_section_alignment (htab->elf.dynobj, s)) |
5bd4f169 | 4715 | { |
65f38f15 | 4716 | if (! bfd_set_section_alignment (htab->elf.dynobj, s, power_of_two)) |
b34976b6 | 4717 | return FALSE; |
5bd4f169 AM |
4718 | } |
4719 | ||
4720 | /* Define the symbol as being at this point in the section. */ | |
4721 | h->root.u.def.section = s; | |
eea6121a | 4722 | h->root.u.def.value = s->size; |
5bd4f169 AM |
4723 | |
4724 | /* Increment the section size to make room for the symbol. */ | |
eea6121a | 4725 | s->size += h->size; |
5bd4f169 | 4726 | |
b34976b6 | 4727 | return TRUE; |
5bd4f169 AM |
4728 | } |
4729 | ||
e86ce104 AM |
4730 | /* If given a function descriptor symbol, hide both the function code |
4731 | sym and the descriptor. */ | |
4732 | static void | |
4ce794b7 AM |
4733 | ppc64_elf_hide_symbol (struct bfd_link_info *info, |
4734 | struct elf_link_hash_entry *h, | |
4735 | bfd_boolean force_local) | |
e86ce104 | 4736 | { |
34814b9f | 4737 | struct ppc_link_hash_entry *eh; |
e86ce104 AM |
4738 | _bfd_elf_link_hash_hide_symbol (info, h, force_local); |
4739 | ||
34814b9f AM |
4740 | eh = (struct ppc_link_hash_entry *) h; |
4741 | if (eh->is_func_descriptor) | |
e86ce104 | 4742 | { |
34814b9f | 4743 | struct ppc_link_hash_entry *fh = eh->oh; |
e86ce104 | 4744 | |
721956f4 | 4745 | if (fh == NULL) |
d1329ca3 AM |
4746 | { |
4747 | const char *p, *q; | |
4748 | struct ppc_link_hash_table *htab; | |
4749 | char save; | |
4750 | ||
4751 | /* We aren't supposed to use alloca in BFD because on | |
4752 | systems which do not have alloca the version in libiberty | |
4753 | calls xmalloc, which might cause the program to crash | |
4754 | when it runs out of memory. This function doesn't have a | |
4755 | return status, so there's no way to gracefully return an | |
4756 | error. So cheat. We know that string[-1] can be safely | |
34814b9f AM |
4757 | accessed; It's either a string in an ELF string table, |
4758 | or allocated in an objalloc structure. */ | |
d1329ca3 | 4759 | |
34814b9f | 4760 | p = eh->elf.root.root.string - 1; |
d1329ca3 AM |
4761 | save = *p; |
4762 | *(char *) p = '.'; | |
4763 | htab = ppc_hash_table (info); | |
34814b9f AM |
4764 | fh = (struct ppc_link_hash_entry *) |
4765 | elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE); | |
d1329ca3 AM |
4766 | *(char *) p = save; |
4767 | ||
4768 | /* Unfortunately, if it so happens that the string we were | |
4769 | looking for was allocated immediately before this string, | |
4770 | then we overwrote the string terminator. That's the only | |
4771 | reason the lookup should fail. */ | |
4772 | if (fh == NULL) | |
4773 | { | |
34814b9f AM |
4774 | q = eh->elf.root.root.string + strlen (eh->elf.root.root.string); |
4775 | while (q >= eh->elf.root.root.string && *q == *p) | |
d1329ca3 | 4776 | --q, --p; |
34814b9f AM |
4777 | if (q < eh->elf.root.root.string && *p == '.') |
4778 | fh = (struct ppc_link_hash_entry *) | |
4779 | elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE); | |
d1329ca3 AM |
4780 | } |
4781 | if (fh != NULL) | |
4782 | { | |
34814b9f AM |
4783 | eh->oh = fh; |
4784 | fh->oh = eh; | |
d1329ca3 AM |
4785 | } |
4786 | } | |
e86ce104 | 4787 | if (fh != NULL) |
34814b9f | 4788 | _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local); |
e86ce104 AM |
4789 | } |
4790 | } | |
4791 | ||
411e1bfb | 4792 | static bfd_boolean |
4ce794b7 AM |
4793 | get_sym_h (struct elf_link_hash_entry **hp, Elf_Internal_Sym **symp, |
4794 | asection **symsecp, char **tls_maskp, Elf_Internal_Sym **locsymsp, | |
4795 | unsigned long r_symndx, bfd *ibfd) | |
411e1bfb AM |
4796 | { |
4797 | Elf_Internal_Shdr *symtab_hdr = &elf_tdata (ibfd)->symtab_hdr; | |
4798 | ||
4799 | if (r_symndx >= symtab_hdr->sh_info) | |
4800 | { | |
4801 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd); | |
4802 | struct elf_link_hash_entry *h; | |
4803 | ||
4804 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
4805 | while (h->root.type == bfd_link_hash_indirect | |
4806 | || h->root.type == bfd_link_hash_warning) | |
4807 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
4808 | ||
4809 | if (hp != NULL) | |
4810 | *hp = h; | |
4811 | ||
4812 | if (symp != NULL) | |
4813 | *symp = NULL; | |
4814 | ||
4815 | if (symsecp != NULL) | |
4816 | { | |
4817 | asection *symsec = NULL; | |
4818 | if (h->root.type == bfd_link_hash_defined | |
4819 | || h->root.type == bfd_link_hash_defweak) | |
4820 | symsec = h->root.u.def.section; | |
4821 | *symsecp = symsec; | |
4822 | } | |
4823 | ||
e7b938ca | 4824 | if (tls_maskp != NULL) |
411e1bfb AM |
4825 | { |
4826 | struct ppc_link_hash_entry *eh; | |
4827 | ||
4828 | eh = (struct ppc_link_hash_entry *) h; | |
e7b938ca | 4829 | *tls_maskp = &eh->tls_mask; |
411e1bfb AM |
4830 | } |
4831 | } | |
4832 | else | |
4833 | { | |
4834 | Elf_Internal_Sym *sym; | |
4835 | Elf_Internal_Sym *locsyms = *locsymsp; | |
4836 | ||
4837 | if (locsyms == NULL) | |
4838 | { | |
4839 | locsyms = (Elf_Internal_Sym *) symtab_hdr->contents; | |
4840 | if (locsyms == NULL) | |
4841 | locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr, | |
4842 | symtab_hdr->sh_info, | |
4843 | 0, NULL, NULL, NULL); | |
4844 | if (locsyms == NULL) | |
4845 | return FALSE; | |
4846 | *locsymsp = locsyms; | |
4847 | } | |
4848 | sym = locsyms + r_symndx; | |
4849 | ||
4850 | if (hp != NULL) | |
4851 | *hp = NULL; | |
4852 | ||
4853 | if (symp != NULL) | |
4854 | *symp = sym; | |
4855 | ||
4856 | if (symsecp != NULL) | |
4857 | { | |
4858 | asection *symsec = NULL; | |
4859 | if ((sym->st_shndx != SHN_UNDEF | |
4860 | && sym->st_shndx < SHN_LORESERVE) | |
4861 | || sym->st_shndx > SHN_HIRESERVE) | |
4862 | symsec = bfd_section_from_elf_index (ibfd, sym->st_shndx); | |
4863 | *symsecp = symsec; | |
4864 | } | |
4865 | ||
e7b938ca | 4866 | if (tls_maskp != NULL) |
411e1bfb AM |
4867 | { |
4868 | struct got_entry **lgot_ents; | |
e7b938ca | 4869 | char *tls_mask; |
411e1bfb | 4870 | |
e7b938ca | 4871 | tls_mask = NULL; |
411e1bfb AM |
4872 | lgot_ents = elf_local_got_ents (ibfd); |
4873 | if (lgot_ents != NULL) | |
4874 | { | |
e7b938ca AM |
4875 | char *lgot_masks = (char *) (lgot_ents + symtab_hdr->sh_info); |
4876 | tls_mask = &lgot_masks[r_symndx]; | |
411e1bfb | 4877 | } |
e7b938ca | 4878 | *tls_maskp = tls_mask; |
411e1bfb AM |
4879 | } |
4880 | } | |
4881 | return TRUE; | |
4882 | } | |
4883 | ||
e7b938ca | 4884 | /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on |
951fd09b | 4885 | error, 2 on a toc GD type suitable for optimization, 3 on a toc LD |
ad8e1ba5 | 4886 | type suitable for optimization, and 1 otherwise. */ |
951fd09b AM |
4887 | |
4888 | static int | |
0d4792f7 AM |
4889 | get_tls_mask (char **tls_maskp, unsigned long *toc_symndx, |
4890 | Elf_Internal_Sym **locsymsp, | |
4ce794b7 | 4891 | const Elf_Internal_Rela *rel, bfd *ibfd) |
411e1bfb AM |
4892 | { |
4893 | unsigned long r_symndx; | |
0d4792f7 | 4894 | int next_r; |
411e1bfb AM |
4895 | struct elf_link_hash_entry *h; |
4896 | Elf_Internal_Sym *sym; | |
4897 | asection *sec; | |
4898 | bfd_vma off; | |
4899 | ||
4900 | r_symndx = ELF64_R_SYM (rel->r_info); | |
e7b938ca | 4901 | if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd)) |
951fd09b | 4902 | return 0; |
411e1bfb | 4903 | |
e7b938ca | 4904 | if ((*tls_maskp != NULL && **tls_maskp != 0) |
411e1bfb AM |
4905 | || sec == NULL |
4906 | || ppc64_elf_section_data (sec)->t_symndx == NULL) | |
951fd09b | 4907 | return 1; |
411e1bfb AM |
4908 | |
4909 | /* Look inside a TOC section too. */ | |
4910 | if (h != NULL) | |
4911 | { | |
4912 | BFD_ASSERT (h->root.type == bfd_link_hash_defined); | |
4913 | off = h->root.u.def.value; | |
4914 | } | |
4915 | else | |
4916 | off = sym->st_value; | |
4917 | off += rel->r_addend; | |
4918 | BFD_ASSERT (off % 8 == 0); | |
4919 | r_symndx = ppc64_elf_section_data (sec)->t_symndx[off / 8]; | |
951fd09b | 4920 | next_r = ppc64_elf_section_data (sec)->t_symndx[off / 8 + 1]; |
e7b938ca | 4921 | if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd)) |
951fd09b | 4922 | return 0; |
0d4792f7 AM |
4923 | if (toc_symndx != NULL) |
4924 | *toc_symndx = r_symndx; | |
4925 | if ((h == NULL | |
4926 | || ((h->root.type == bfd_link_hash_defined | |
4927 | || h->root.type == bfd_link_hash_defweak) | |
4928 | && !(h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC))) | |
4929 | && (next_r == -1 || next_r == -2)) | |
4930 | return 1 - next_r; | |
951fd09b | 4931 | return 1; |
411e1bfb AM |
4932 | } |
4933 | ||
754021d0 AM |
4934 | /* Adjust all global syms defined in opd sections. In gcc generated |
4935 | code these will already have been done, but I suppose we have to | |
4936 | cater for all sorts of hand written assembly. */ | |
4937 | ||
4938 | static bfd_boolean | |
4939 | adjust_opd_syms (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED) | |
4940 | { | |
4941 | struct ppc_link_hash_entry *eh; | |
4942 | asection *sym_sec; | |
4943 | long *opd_adjust; | |
4944 | ||
4945 | if (h->root.type == bfd_link_hash_indirect) | |
4946 | return TRUE; | |
4947 | ||
4948 | if (h->root.type == bfd_link_hash_warning) | |
4949 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
4950 | ||
4951 | if (h->root.type != bfd_link_hash_defined | |
4952 | && h->root.type != bfd_link_hash_defweak) | |
4953 | return TRUE; | |
4954 | ||
4955 | eh = (struct ppc_link_hash_entry *) h; | |
4956 | if (eh->adjust_done) | |
4957 | return TRUE; | |
4958 | ||
4959 | sym_sec = eh->elf.root.u.def.section; | |
4025353c AM |
4960 | opd_adjust = get_opd_info (sym_sec); |
4961 | if (opd_adjust != NULL) | |
754021d0 | 4962 | { |
4025353c AM |
4963 | long adjust = opd_adjust[eh->elf.root.u.def.value / 24]; |
4964 | if (adjust == -1) | |
4965 | { | |
4966 | /* This entry has been deleted. */ | |
4967 | eh->elf.root.u.def.value = 0; | |
4968 | eh->elf.root.u.def.section = &bfd_abs_section; | |
4969 | } | |
4970 | else | |
4971 | eh->elf.root.u.def.value += adjust; | |
754021d0 AM |
4972 | eh->adjust_done = 1; |
4973 | } | |
4974 | return TRUE; | |
4975 | } | |
4976 | ||
4977 | /* Remove unused Official Procedure Descriptor entries. Currently we | |
4978 | only remove those associated with functions in discarded link-once | |
4979 | sections, or weakly defined functions that have been overridden. It | |
4980 | would be possible to remove many more entries for statically linked | |
4981 | applications. */ | |
4982 | ||
b34976b6 | 4983 | bfd_boolean |
4ce794b7 | 4984 | ppc64_elf_edit_opd (bfd *obfd, struct bfd_link_info *info) |
1e2f5b6e AM |
4985 | { |
4986 | bfd *ibfd; | |
754021d0 | 4987 | bfd_boolean some_edited = FALSE; |
1e2f5b6e | 4988 | |
411e1bfb | 4989 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) |
1e2f5b6e AM |
4990 | { |
4991 | asection *sec; | |
4992 | Elf_Internal_Rela *relstart, *rel, *relend; | |
4993 | Elf_Internal_Shdr *symtab_hdr; | |
6cdc0ccc | 4994 | Elf_Internal_Sym *local_syms; |
1e2f5b6e AM |
4995 | struct elf_link_hash_entry **sym_hashes; |
4996 | bfd_vma offset; | |
d6fe2dc1 | 4997 | bfd_size_type amt; |
4025353c | 4998 | long *opd_adjust; |
b34976b6 | 4999 | bfd_boolean need_edit; |
1e2f5b6e AM |
5000 | |
5001 | sec = bfd_get_section_by_name (ibfd, ".opd"); | |
5002 | if (sec == NULL) | |
5003 | continue; | |
5004 | ||
eea6121a | 5005 | amt = sec->size * sizeof (long) / 24; |
4025353c AM |
5006 | opd_adjust = get_opd_info (sec); |
5007 | if (opd_adjust == NULL) | |
d6fe2dc1 AM |
5008 | { |
5009 | /* Must be a ld -r link. ie. check_relocs hasn't been | |
5010 | called. */ | |
4025353c AM |
5011 | opd_adjust = bfd_zalloc (obfd, amt); |
5012 | ppc64_elf_section_data (sec)->opd.adjust = opd_adjust; | |
d6fe2dc1 | 5013 | } |
4025353c | 5014 | memset (opd_adjust, 0, amt); |
1e2f5b6e AM |
5015 | |
5016 | if (sec->output_section == bfd_abs_section_ptr) | |
5017 | continue; | |
5018 | ||
5019 | /* Look through the section relocs. */ | |
5020 | if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0) | |
5021 | continue; | |
5022 | ||
6cdc0ccc | 5023 | local_syms = NULL; |
1e2f5b6e AM |
5024 | symtab_hdr = &elf_tdata (ibfd)->symtab_hdr; |
5025 | sym_hashes = elf_sym_hashes (ibfd); | |
5026 | ||
5027 | /* Read the relocations. */ | |
4ce794b7 | 5028 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, |
45d6a902 | 5029 | info->keep_memory); |
1e2f5b6e | 5030 | if (relstart == NULL) |
b34976b6 | 5031 | return FALSE; |
1e2f5b6e AM |
5032 | |
5033 | /* First run through the relocs to check they are sane, and to | |
5034 | determine whether we need to edit this opd section. */ | |
b34976b6 | 5035 | need_edit = FALSE; |
1e2f5b6e AM |
5036 | offset = 0; |
5037 | relend = relstart + sec->reloc_count; | |
50bc7936 | 5038 | for (rel = relstart; rel < relend; ) |
1e2f5b6e | 5039 | { |
04c9666a | 5040 | enum elf_ppc64_reloc_type r_type; |
1e2f5b6e AM |
5041 | unsigned long r_symndx; |
5042 | asection *sym_sec; | |
5043 | struct elf_link_hash_entry *h; | |
5044 | Elf_Internal_Sym *sym; | |
5045 | ||
5046 | /* .opd contains a regular array of 24 byte entries. We're | |
5047 | only interested in the reloc pointing to a function entry | |
5048 | point. */ | |
50bc7936 AM |
5049 | if (rel->r_offset != offset |
5050 | || rel + 1 >= relend | |
5051 | || (rel + 1)->r_offset != offset + 8) | |
1e2f5b6e AM |
5052 | { |
5053 | /* If someone messes with .opd alignment then after a | |
5054 | "ld -r" we might have padding in the middle of .opd. | |
5055 | Also, there's nothing to prevent someone putting | |
5056 | something silly in .opd with the assembler. No .opd | |
b34976b6 | 5057 | optimization for them! */ |
1e2f5b6e AM |
5058 | (*_bfd_error_handler) |
5059 | (_("%s: .opd is not a regular array of opd entries"), | |
5060 | bfd_archive_filename (ibfd)); | |
b34976b6 | 5061 | need_edit = FALSE; |
1e2f5b6e AM |
5062 | break; |
5063 | } | |
5064 | ||
50bc7936 AM |
5065 | if ((r_type = ELF64_R_TYPE (rel->r_info)) != R_PPC64_ADDR64 |
5066 | || (r_type = ELF64_R_TYPE ((rel + 1)->r_info)) != R_PPC64_TOC) | |
5067 | { | |
5068 | (*_bfd_error_handler) | |
5069 | (_("%s: unexpected reloc type %u in .opd section"), | |
5070 | bfd_archive_filename (ibfd), r_type); | |
5071 | need_edit = FALSE; | |
5072 | break; | |
5073 | } | |
5074 | ||
1e2f5b6e | 5075 | r_symndx = ELF64_R_SYM (rel->r_info); |
411e1bfb AM |
5076 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, |
5077 | r_symndx, ibfd)) | |
50bc7936 | 5078 | goto error_ret; |
1e2f5b6e AM |
5079 | |
5080 | if (sym_sec == NULL || sym_sec->owner == NULL) | |
5081 | { | |
411e1bfb AM |
5082 | const char *sym_name; |
5083 | if (h != NULL) | |
5084 | sym_name = h->root.root.string; | |
5085 | else | |
5086 | sym_name = bfd_elf_local_sym_name (ibfd, sym); | |
5087 | ||
1e2f5b6e AM |
5088 | (*_bfd_error_handler) |
5089 | (_("%s: undefined sym `%s' in .opd section"), | |
5090 | bfd_archive_filename (ibfd), | |
411e1bfb | 5091 | sym_name); |
b34976b6 | 5092 | need_edit = FALSE; |
1e2f5b6e AM |
5093 | break; |
5094 | } | |
5095 | ||
51020317 AM |
5096 | /* opd entries are always for functions defined in the |
5097 | current input bfd. If the symbol isn't defined in the | |
5098 | input bfd, then we won't be using the function in this | |
5099 | bfd; It must be defined in a linkonce section in another | |
5100 | bfd, or is weak. It's also possible that we are | |
5101 | discarding the function due to a linker script /DISCARD/, | |
5102 | which we test for via the output_section. */ | |
5103 | if (sym_sec->owner != ibfd | |
5104 | || sym_sec->output_section == bfd_abs_section_ptr) | |
b34976b6 | 5105 | need_edit = TRUE; |
1e2f5b6e AM |
5106 | |
5107 | offset += 24; | |
50bc7936 AM |
5108 | rel += 2; |
5109 | /* Allow for the possibility of a reloc on the third word. */ | |
5110 | if (rel < relend | |
5111 | && rel->r_offset == offset - 8) | |
5112 | rel += 1; | |
1e2f5b6e AM |
5113 | } |
5114 | ||
5115 | if (need_edit) | |
5116 | { | |
5117 | Elf_Internal_Rela *write_rel; | |
5118 | bfd_byte *rptr, *wptr; | |
b34976b6 | 5119 | bfd_boolean skip; |
1e2f5b6e AM |
5120 | |
5121 | /* This seems a waste of time as input .opd sections are all | |
5122 | zeros as generated by gcc, but I suppose there's no reason | |
5123 | this will always be so. We might start putting something in | |
5124 | the third word of .opd entries. */ | |
5125 | if ((sec->flags & SEC_IN_MEMORY) == 0) | |
5126 | { | |
eea6121a AM |
5127 | bfd_byte *loc; |
5128 | if (!bfd_malloc_and_get_section (ibfd, sec, &loc)) | |
6cdc0ccc | 5129 | { |
eea6121a AM |
5130 | if (loc != NULL) |
5131 | free (loc); | |
50bc7936 | 5132 | error_ret: |
6cdc0ccc AM |
5133 | if (local_syms != NULL |
5134 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
5135 | free (local_syms); | |
6cdc0ccc AM |
5136 | if (elf_section_data (sec)->relocs != relstart) |
5137 | free (relstart); | |
b34976b6 | 5138 | return FALSE; |
6cdc0ccc | 5139 | } |
1e2f5b6e AM |
5140 | sec->contents = loc; |
5141 | sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS); | |
5142 | } | |
5143 | ||
5144 | elf_section_data (sec)->relocs = relstart; | |
5145 | ||
5146 | wptr = sec->contents; | |
5147 | rptr = sec->contents; | |
5148 | write_rel = relstart; | |
b34976b6 | 5149 | skip = FALSE; |
1e2f5b6e AM |
5150 | offset = 0; |
5151 | for (rel = relstart; rel < relend; rel++) | |
5152 | { | |
50bc7936 AM |
5153 | unsigned long r_symndx; |
5154 | asection *sym_sec; | |
5155 | struct elf_link_hash_entry *h; | |
5156 | Elf_Internal_Sym *sym; | |
5157 | ||
5158 | r_symndx = ELF64_R_SYM (rel->r_info); | |
5159 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
d37c89e5 | 5160 | r_symndx, ibfd)) |
50bc7936 AM |
5161 | goto error_ret; |
5162 | ||
1e2f5b6e AM |
5163 | if (rel->r_offset == offset) |
5164 | { | |
50bc7936 | 5165 | struct ppc_link_hash_entry *fdh = NULL; |
4025353c AM |
5166 | if (h != NULL |
5167 | && h->root.root.string[0] == '.') | |
50bc7936 AM |
5168 | fdh = get_fdh ((struct ppc_link_hash_entry *) h, |
5169 | ppc_hash_table (info)); | |
1e2f5b6e | 5170 | |
51020317 AM |
5171 | skip = (sym_sec->owner != ibfd |
5172 | || sym_sec->output_section == bfd_abs_section_ptr); | |
a4aa0fb7 AM |
5173 | if (skip) |
5174 | { | |
4025353c | 5175 | if (fdh != NULL && sym_sec->owner == ibfd) |
a4aa0fb7 AM |
5176 | { |
5177 | /* Arrange for the function descriptor sym | |
5178 | to be dropped. */ | |
d6fe2dc1 AM |
5179 | fdh->elf.root.u.def.value = 0; |
5180 | fdh->elf.root.u.def.section = sym_sec; | |
a4aa0fb7 | 5181 | } |
4025353c | 5182 | opd_adjust[rel->r_offset / 24] = -1; |
a4aa0fb7 AM |
5183 | } |
5184 | else | |
1e2f5b6e AM |
5185 | { |
5186 | /* We'll be keeping this opd entry. */ | |
5187 | ||
4025353c | 5188 | if (fdh != NULL) |
1e2f5b6e | 5189 | { |
754021d0 AM |
5190 | /* Redefine the function descriptor symbol to |
5191 | this location in the opd section. It is | |
5192 | necessary to update the value here rather | |
5193 | than using an array of adjustments as we do | |
5194 | for local symbols, because various places | |
5195 | in the generic ELF code use the value | |
5196 | stored in u.def.value. */ | |
d6fe2dc1 | 5197 | fdh->elf.root.u.def.value = wptr - sec->contents; |
754021d0 | 5198 | fdh->adjust_done = 1; |
1e2f5b6e | 5199 | } |
754021d0 AM |
5200 | |
5201 | /* Local syms are a bit tricky. We could | |
5202 | tweak them as they can be cached, but | |
5203 | we'd need to look through the local syms | |
5204 | for the function descriptor sym which we | |
5205 | don't have at the moment. So keep an | |
5206 | array of adjustments. */ | |
4025353c | 5207 | opd_adjust[rel->r_offset / 24] = wptr - rptr; |
1e2f5b6e AM |
5208 | |
5209 | if (wptr != rptr) | |
5210 | memcpy (wptr, rptr, 24); | |
5211 | wptr += 24; | |
5212 | } | |
5213 | rptr += 24; | |
5214 | offset += 24; | |
5215 | } | |
5216 | ||
50bc7936 AM |
5217 | if (skip) |
5218 | { | |
5219 | BFD_ASSERT (MUST_BE_DYN_RELOC (ELF64_R_TYPE (rel->r_info))); | |
5220 | if (info->shared) | |
5221 | { | |
5222 | /* We won't be needing dynamic relocs here. */ | |
5223 | struct ppc_dyn_relocs **pp; | |
5224 | struct ppc_dyn_relocs *p; | |
5225 | ||
5226 | if (h != NULL) | |
5227 | pp = &((struct ppc_link_hash_entry *) h)->dyn_relocs; | |
5228 | else if (sym_sec != NULL) | |
5229 | pp = ((struct ppc_dyn_relocs **) | |
5230 | &elf_section_data (sym_sec)->local_dynrel); | |
5231 | else | |
5232 | pp = ((struct ppc_dyn_relocs **) | |
5233 | &elf_section_data (sec)->local_dynrel); | |
5234 | while ((p = *pp) != NULL) | |
5235 | { | |
5236 | if (p->sec == sec) | |
5237 | { | |
5238 | p->count -= 1; | |
5239 | if (p->count == 0) | |
d37c89e5 | 5240 | *pp = p->next; |
50bc7936 AM |
5241 | break; |
5242 | } | |
5243 | pp = &p->next; | |
5244 | } | |
5245 | } | |
5246 | } | |
5247 | else | |
1e2f5b6e | 5248 | { |
50bc7936 AM |
5249 | /* We need to adjust any reloc offsets to point to the |
5250 | new opd entries. While we're at it, we may as well | |
5251 | remove redundant relocs. */ | |
1e2f5b6e AM |
5252 | rel->r_offset += wptr - rptr; |
5253 | if (write_rel != rel) | |
5254 | memcpy (write_rel, rel, sizeof (*rel)); | |
5255 | ++write_rel; | |
5256 | } | |
5257 | } | |
5258 | ||
eea6121a | 5259 | sec->size = wptr - sec->contents; |
1e2f5b6e | 5260 | sec->reloc_count = write_rel - relstart; |
cdcf6e38 AM |
5261 | /* Fudge the size too, as this is used later in |
5262 | elf_bfd_final_link if we are emitting relocs. */ | |
5263 | elf_section_data (sec)->rel_hdr.sh_size | |
5264 | = sec->reloc_count * elf_section_data (sec)->rel_hdr.sh_entsize; | |
5265 | BFD_ASSERT (elf_section_data (sec)->rel_hdr2 == NULL); | |
754021d0 | 5266 | some_edited = TRUE; |
1e2f5b6e | 5267 | } |
6cdc0ccc | 5268 | else if (elf_section_data (sec)->relocs != relstart) |
1e2f5b6e | 5269 | free (relstart); |
6cdc0ccc | 5270 | |
411e1bfb AM |
5271 | if (local_syms != NULL |
5272 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
5273 | { | |
5274 | if (!info->keep_memory) | |
5275 | free (local_syms); | |
5276 | else | |
5277 | symtab_hdr->contents = (unsigned char *) local_syms; | |
5278 | } | |
5279 | } | |
5280 | ||
754021d0 AM |
5281 | if (some_edited) |
5282 | elf_link_hash_traverse (elf_hash_table (info), adjust_opd_syms, NULL); | |
5283 | ||
411e1bfb AM |
5284 | return TRUE; |
5285 | } | |
5286 | ||
e1918d23 | 5287 | /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */ |
411e1bfb | 5288 | |
e1918d23 | 5289 | asection * |
4ce794b7 | 5290 | ppc64_elf_tls_setup (bfd *obfd, struct bfd_link_info *info) |
411e1bfb | 5291 | { |
411e1bfb AM |
5292 | struct ppc_link_hash_table *htab; |
5293 | ||
411e1bfb | 5294 | htab = ppc_hash_table (info); |
a48ebf4d AM |
5295 | if (htab->tls_get_addr != NULL) |
5296 | { | |
5297 | struct elf_link_hash_entry *h = htab->tls_get_addr; | |
5298 | ||
5299 | while (h->root.type == bfd_link_hash_indirect | |
5300 | || h->root.type == bfd_link_hash_warning) | |
5301 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
5302 | ||
5303 | htab->tls_get_addr = h; | |
5304 | } | |
5305 | ||
e1918d23 | 5306 | return _bfd_elf_tls_setup (obfd, info); |
951fd09b | 5307 | } |
411e1bfb | 5308 | |
951fd09b AM |
5309 | /* Run through all the TLS relocs looking for optimization |
5310 | opportunities. The linker has been hacked (see ppc64elf.em) to do | |
5311 | a preliminary section layout so that we know the TLS segment | |
5312 | offsets. We can't optimize earlier because some optimizations need | |
5313 | to know the tp offset, and we need to optimize before allocating | |
5314 | dynamic relocations. */ | |
5315 | ||
5316 | bfd_boolean | |
4ce794b7 | 5317 | ppc64_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED, struct bfd_link_info *info) |
951fd09b AM |
5318 | { |
5319 | bfd *ibfd; | |
5320 | asection *sec; | |
5321 | struct ppc_link_hash_table *htab; | |
5322 | ||
1049f94e | 5323 | if (info->relocatable || info->shared) |
411e1bfb AM |
5324 | return TRUE; |
5325 | ||
951fd09b | 5326 | htab = ppc_hash_table (info); |
411e1bfb AM |
5327 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) |
5328 | { | |
5329 | Elf_Internal_Sym *locsyms = NULL; | |
5330 | ||
5331 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
5332 | if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section)) | |
5333 | { | |
5334 | Elf_Internal_Rela *relstart, *rel, *relend; | |
5335 | int expecting_tls_get_addr; | |
5336 | ||
5337 | /* Read the relocations. */ | |
4ce794b7 | 5338 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, |
45d6a902 | 5339 | info->keep_memory); |
411e1bfb AM |
5340 | if (relstart == NULL) |
5341 | return FALSE; | |
5342 | ||
5343 | expecting_tls_get_addr = 0; | |
5344 | relend = relstart + sec->reloc_count; | |
5345 | for (rel = relstart; rel < relend; rel++) | |
5346 | { | |
5347 | enum elf_ppc64_reloc_type r_type; | |
5348 | unsigned long r_symndx; | |
5349 | struct elf_link_hash_entry *h; | |
5350 | Elf_Internal_Sym *sym; | |
5351 | asection *sym_sec; | |
e7b938ca AM |
5352 | char *tls_mask; |
5353 | char tls_set, tls_clear, tls_type = 0; | |
411e1bfb | 5354 | bfd_vma value; |
951fd09b | 5355 | bfd_boolean ok_tprel, is_local; |
411e1bfb AM |
5356 | |
5357 | r_symndx = ELF64_R_SYM (rel->r_info); | |
e7b938ca | 5358 | if (!get_sym_h (&h, &sym, &sym_sec, &tls_mask, &locsyms, |
411e1bfb AM |
5359 | r_symndx, ibfd)) |
5360 | { | |
5361 | err_free_rel: | |
5362 | if (elf_section_data (sec)->relocs != relstart) | |
5363 | free (relstart); | |
5364 | if (locsyms != NULL | |
5365 | && (elf_tdata (ibfd)->symtab_hdr.contents | |
5366 | != (unsigned char *) locsyms)) | |
5367 | free (locsyms); | |
5368 | return FALSE; | |
5369 | } | |
5370 | ||
5371 | if (h != NULL) | |
5372 | { | |
5373 | if (h->root.type != bfd_link_hash_defined | |
5374 | && h->root.type != bfd_link_hash_defweak) | |
5375 | continue; | |
5376 | value = h->root.u.def.value; | |
5377 | } | |
5378 | else | |
4025353c AM |
5379 | /* Symbols referenced by TLS relocs must be of type |
5380 | STT_TLS. So no need for .opd local sym adjust. */ | |
5381 | value = sym->st_value; | |
951fd09b | 5382 | |
411e1bfb | 5383 | ok_tprel = FALSE; |
951fd09b AM |
5384 | is_local = FALSE; |
5385 | if (h == NULL | |
5386 | || !(h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC)) | |
411e1bfb | 5387 | { |
951fd09b | 5388 | is_local = TRUE; |
411e1bfb AM |
5389 | value += sym_sec->output_offset; |
5390 | value += sym_sec->output_section->vma; | |
e1918d23 | 5391 | value -= htab->elf.tls_sec->vma; |
411e1bfb AM |
5392 | ok_tprel = (value + TP_OFFSET + ((bfd_vma) 1 << 31) |
5393 | < (bfd_vma) 1 << 32); | |
5394 | } | |
5395 | ||
4ce794b7 | 5396 | r_type = ELF64_R_TYPE (rel->r_info); |
411e1bfb AM |
5397 | switch (r_type) |
5398 | { | |
5399 | case R_PPC64_GOT_TLSLD16: | |
5400 | case R_PPC64_GOT_TLSLD16_LO: | |
5401 | case R_PPC64_GOT_TLSLD16_HI: | |
5402 | case R_PPC64_GOT_TLSLD16_HA: | |
951fd09b AM |
5403 | /* These relocs should never be against a symbol |
5404 | defined in a shared lib. Leave them alone if | |
5405 | that turns out to be the case. */ | |
e717da7e | 5406 | ppc64_tlsld_got (ibfd)->refcount -= 1; |
951fd09b AM |
5407 | if (!is_local) |
5408 | continue; | |
5409 | ||
951fd09b AM |
5410 | /* LD -> LE */ |
5411 | tls_set = 0; | |
5412 | tls_clear = TLS_LD; | |
e7b938ca | 5413 | tls_type = TLS_TLS | TLS_LD; |
411e1bfb AM |
5414 | expecting_tls_get_addr = 1; |
5415 | break; | |
5416 | ||
5417 | case R_PPC64_GOT_TLSGD16: | |
5418 | case R_PPC64_GOT_TLSGD16_LO: | |
5419 | case R_PPC64_GOT_TLSGD16_HI: | |
5420 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b | 5421 | if (ok_tprel) |
411e1bfb AM |
5422 | /* GD -> LE */ |
5423 | tls_set = 0; | |
5424 | else | |
5425 | /* GD -> IE */ | |
951fd09b AM |
5426 | tls_set = TLS_TLS | TLS_TPRELGD; |
5427 | tls_clear = TLS_GD; | |
e7b938ca | 5428 | tls_type = TLS_TLS | TLS_GD; |
411e1bfb AM |
5429 | expecting_tls_get_addr = 1; |
5430 | break; | |
5431 | ||
5432 | case R_PPC64_GOT_TPREL16_DS: | |
5433 | case R_PPC64_GOT_TPREL16_LO_DS: | |
5434 | case R_PPC64_GOT_TPREL16_HI: | |
5435 | case R_PPC64_GOT_TPREL16_HA: | |
5436 | expecting_tls_get_addr = 0; | |
5437 | if (ok_tprel) | |
5438 | { | |
5439 | /* IE -> LE */ | |
5440 | tls_set = 0; | |
5441 | tls_clear = TLS_TPREL; | |
e7b938ca | 5442 | tls_type = TLS_TLS | TLS_TPREL; |
411e1bfb AM |
5443 | break; |
5444 | } | |
5445 | else | |
5446 | continue; | |
5447 | ||
5448 | case R_PPC64_REL14: | |
5449 | case R_PPC64_REL14_BRTAKEN: | |
5450 | case R_PPC64_REL14_BRNTAKEN: | |
5451 | case R_PPC64_REL24: | |
5452 | if (h != NULL | |
5453 | && h == htab->tls_get_addr) | |
5454 | { | |
5455 | if (!expecting_tls_get_addr | |
5456 | && rel != relstart | |
5457 | && ((ELF64_R_TYPE (rel[-1].r_info) | |
5458 | == R_PPC64_TOC16) | |
5459 | || (ELF64_R_TYPE (rel[-1].r_info) | |
5460 | == R_PPC64_TOC16_LO))) | |
5461 | { | |
5462 | /* Check for toc tls entries. */ | |
5463 | char *toc_tls; | |
951fd09b | 5464 | int retval; |
411e1bfb | 5465 | |
0d4792f7 | 5466 | retval = get_tls_mask (&toc_tls, NULL, &locsyms, |
951fd09b AM |
5467 | rel - 1, ibfd); |
5468 | if (retval == 0) | |
411e1bfb AM |
5469 | goto err_free_rel; |
5470 | if (toc_tls != NULL) | |
951fd09b | 5471 | expecting_tls_get_addr = retval > 1; |
411e1bfb AM |
5472 | } |
5473 | ||
5474 | if (expecting_tls_get_addr) | |
5475 | { | |
5476 | struct plt_entry *ent; | |
5477 | for (ent = h->plt.plist; ent; ent = ent->next) | |
5478 | if (ent->addend == 0) | |
5479 | { | |
5480 | if (ent->plt.refcount > 0) | |
5481 | ent->plt.refcount -= 1; | |
5482 | break; | |
5483 | } | |
5484 | } | |
5485 | } | |
5486 | expecting_tls_get_addr = 0; | |
5487 | continue; | |
5488 | ||
5489 | case R_PPC64_TPREL64: | |
5490 | expecting_tls_get_addr = 0; | |
5491 | if (ok_tprel) | |
5492 | { | |
5493 | /* IE -> LE */ | |
5494 | tls_set = TLS_EXPLICIT; | |
5495 | tls_clear = TLS_TPREL; | |
5496 | break; | |
5497 | } | |
5498 | else | |
5499 | continue; | |
5500 | ||
5501 | case R_PPC64_DTPMOD64: | |
5502 | expecting_tls_get_addr = 0; | |
951fd09b AM |
5503 | if (rel + 1 < relend |
5504 | && (rel[1].r_info | |
5505 | == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)) | |
5506 | && rel[1].r_offset == rel->r_offset + 8) | |
411e1bfb | 5507 | { |
951fd09b | 5508 | if (ok_tprel) |
411e1bfb | 5509 | /* GD -> LE */ |
951fd09b | 5510 | tls_set = TLS_EXPLICIT | TLS_GD; |
411e1bfb AM |
5511 | else |
5512 | /* GD -> IE */ | |
951fd09b AM |
5513 | tls_set = TLS_EXPLICIT | TLS_GD | TLS_TPRELGD; |
5514 | tls_clear = TLS_GD; | |
411e1bfb AM |
5515 | } |
5516 | else | |
5517 | { | |
951fd09b AM |
5518 | if (!is_local) |
5519 | continue; | |
5520 | ||
5521 | /* LD -> LE */ | |
5522 | tls_set = TLS_EXPLICIT; | |
5523 | tls_clear = TLS_LD; | |
411e1bfb AM |
5524 | } |
5525 | break; | |
5526 | ||
5527 | default: | |
5528 | expecting_tls_get_addr = 0; | |
5529 | continue; | |
5530 | } | |
5531 | ||
5532 | if ((tls_set & TLS_EXPLICIT) == 0) | |
5533 | { | |
5534 | struct got_entry *ent; | |
5535 | ||
5536 | /* Adjust got entry for this reloc. */ | |
5537 | if (h != NULL) | |
5538 | ent = h->got.glist; | |
5539 | else | |
5540 | ent = elf_local_got_ents (ibfd)[r_symndx]; | |
5541 | ||
5542 | for (; ent != NULL; ent = ent->next) | |
5543 | if (ent->addend == rel->r_addend | |
e717da7e | 5544 | && ent->owner == ibfd |
e7b938ca | 5545 | && ent->tls_type == tls_type) |
411e1bfb AM |
5546 | break; |
5547 | if (ent == NULL) | |
5548 | abort (); | |
5549 | ||
5550 | if (tls_set == 0) | |
5551 | { | |
5552 | /* We managed to get rid of a got entry. */ | |
5553 | if (ent->got.refcount > 0) | |
5554 | ent->got.refcount -= 1; | |
5555 | } | |
411e1bfb AM |
5556 | } |
5557 | else if (h != NULL) | |
5558 | { | |
5559 | struct ppc_link_hash_entry * eh; | |
5560 | struct ppc_dyn_relocs **pp; | |
5561 | struct ppc_dyn_relocs *p; | |
5562 | ||
5563 | /* Adjust dynamic relocs. */ | |
5564 | eh = (struct ppc_link_hash_entry *) h; | |
5565 | for (pp = &eh->dyn_relocs; | |
5566 | (p = *pp) != NULL; | |
5567 | pp = &p->next) | |
5568 | if (p->sec == sec) | |
5569 | { | |
5570 | /* If we got rid of a DTPMOD/DTPREL reloc | |
5571 | pair then we'll lose one or two dyn | |
5572 | relocs. */ | |
951fd09b | 5573 | if (tls_set == (TLS_EXPLICIT | TLS_GD)) |
411e1bfb | 5574 | p->count -= 1; |
951fd09b | 5575 | p->count -= 1; |
411e1bfb AM |
5576 | if (p->count == 0) |
5577 | *pp = p->next; | |
5578 | break; | |
5579 | } | |
5580 | } | |
5581 | ||
e7b938ca AM |
5582 | *tls_mask |= tls_set; |
5583 | *tls_mask &= ~tls_clear; | |
411e1bfb AM |
5584 | } |
5585 | ||
5586 | if (elf_section_data (sec)->relocs != relstart) | |
5587 | free (relstart); | |
5588 | } | |
5589 | ||
5590 | if (locsyms != NULL | |
5591 | && (elf_tdata (ibfd)->symtab_hdr.contents | |
5592 | != (unsigned char *) locsyms)) | |
6cdc0ccc AM |
5593 | { |
5594 | if (!info->keep_memory) | |
411e1bfb | 5595 | free (locsyms); |
6cdc0ccc | 5596 | else |
411e1bfb | 5597 | elf_tdata (ibfd)->symtab_hdr.contents = (unsigned char *) locsyms; |
6cdc0ccc | 5598 | } |
1e2f5b6e | 5599 | } |
b34976b6 | 5600 | return TRUE; |
1e2f5b6e | 5601 | } |
b34976b6 | 5602 | |
65f38f15 AM |
5603 | /* Allocate space in .plt, .got and associated reloc sections for |
5604 | dynamic relocs. */ | |
5bd4f169 | 5605 | |
b34976b6 | 5606 | static bfd_boolean |
4ce794b7 | 5607 | allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf) |
5bd4f169 | 5608 | { |
65f38f15 AM |
5609 | struct bfd_link_info *info; |
5610 | struct ppc_link_hash_table *htab; | |
5bd4f169 | 5611 | asection *s; |
65f38f15 AM |
5612 | struct ppc_link_hash_entry *eh; |
5613 | struct ppc_dyn_relocs *p; | |
411e1bfb | 5614 | struct got_entry *gent; |
5bd4f169 | 5615 | |
e92d460e | 5616 | if (h->root.type == bfd_link_hash_indirect) |
b34976b6 | 5617 | return TRUE; |
5bd4f169 | 5618 | |
e92d460e AM |
5619 | if (h->root.type == bfd_link_hash_warning) |
5620 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
5621 | ||
65f38f15 AM |
5622 | info = (struct bfd_link_info *) inf; |
5623 | htab = ppc_hash_table (info); | |
5bd4f169 | 5624 | |
65f38f15 | 5625 | if (htab->elf.dynamic_sections_created |
411e1bfb | 5626 | && h->dynindx != -1 |
9c7a29a3 | 5627 | && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h)) |
5bd4f169 | 5628 | { |
411e1bfb AM |
5629 | struct plt_entry *pent; |
5630 | bfd_boolean doneone = FALSE; | |
5631 | for (pent = h->plt.plist; pent != NULL; pent = pent->next) | |
5632 | if (pent->plt.refcount > 0) | |
5633 | { | |
5634 | BFD_ASSERT (((struct ppc_link_hash_entry *) h)->is_func_descriptor); | |
5635 | ||
5636 | /* If this is the first .plt entry, make room for the special | |
5637 | first entry. */ | |
4ce794b7 | 5638 | s = htab->plt; |
eea6121a AM |
5639 | if (s->size == 0) |
5640 | s->size += PLT_INITIAL_ENTRY_SIZE; | |
411e1bfb | 5641 | |
eea6121a | 5642 | pent->plt.offset = s->size; |
411e1bfb AM |
5643 | |
5644 | /* Make room for this entry. */ | |
eea6121a | 5645 | s->size += PLT_ENTRY_SIZE; |
411e1bfb AM |
5646 | |
5647 | /* Make room for the .glink code. */ | |
4ce794b7 | 5648 | s = htab->glink; |
eea6121a AM |
5649 | if (s->size == 0) |
5650 | s->size += GLINK_CALL_STUB_SIZE; | |
411e1bfb | 5651 | /* We need bigger stubs past index 32767. */ |
eea6121a AM |
5652 | if (s->size >= GLINK_CALL_STUB_SIZE + 32768*2*4) |
5653 | s->size += 4; | |
5654 | s->size += 2*4; | |
411e1bfb AM |
5655 | |
5656 | /* We also need to make an entry in the .rela.plt section. */ | |
4ce794b7 | 5657 | s = htab->relplt; |
eea6121a | 5658 | s->size += sizeof (Elf64_External_Rela); |
411e1bfb AM |
5659 | doneone = TRUE; |
5660 | } | |
5661 | else | |
5662 | pent->plt.offset = (bfd_vma) -1; | |
5663 | if (!doneone) | |
65f38f15 | 5664 | { |
411e1bfb | 5665 | h->plt.plist = NULL; |
65f38f15 AM |
5666 | h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT; |
5667 | } | |
5668 | } | |
5669 | else | |
5670 | { | |
411e1bfb | 5671 | h->plt.plist = NULL; |
65f38f15 AM |
5672 | h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT; |
5673 | } | |
5674 | ||
951fd09b AM |
5675 | eh = (struct ppc_link_hash_entry *) h; |
5676 | /* Run through the TLS GD got entries first if we're changing them | |
5677 | to TPREL. */ | |
e7b938ca | 5678 | if ((eh->tls_mask & TLS_TPRELGD) != 0) |
951fd09b AM |
5679 | for (gent = h->got.glist; gent != NULL; gent = gent->next) |
5680 | if (gent->got.refcount > 0 | |
5681 | && (gent->tls_type & TLS_GD) != 0) | |
5682 | { | |
5683 | /* This was a GD entry that has been converted to TPREL. If | |
5684 | there happens to be a TPREL entry we can use that one. */ | |
5685 | struct got_entry *ent; | |
5686 | for (ent = h->got.glist; ent != NULL; ent = ent->next) | |
5687 | if (ent->got.refcount > 0 | |
5688 | && (ent->tls_type & TLS_TPREL) != 0 | |
e717da7e AM |
5689 | && ent->addend == gent->addend |
5690 | && ent->owner == gent->owner) | |
951fd09b AM |
5691 | { |
5692 | gent->got.refcount = 0; | |
5693 | break; | |
5694 | } | |
5695 | ||
5696 | /* If not, then we'll be using our own TPREL entry. */ | |
5697 | if (gent->got.refcount != 0) | |
5698 | gent->tls_type = TLS_TLS | TLS_TPREL; | |
5699 | } | |
5700 | ||
411e1bfb AM |
5701 | for (gent = h->got.glist; gent != NULL; gent = gent->next) |
5702 | if (gent->got.refcount > 0) | |
5703 | { | |
951fd09b AM |
5704 | bfd_boolean dyn; |
5705 | ||
411e1bfb | 5706 | /* Make sure this symbol is output as a dynamic symbol. |
951fd09b AM |
5707 | Undefined weak syms won't yet be marked as dynamic, |
5708 | nor will all TLS symbols. */ | |
411e1bfb AM |
5709 | if (h->dynindx == -1 |
5710 | && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0) | |
5711 | { | |
c152c796 | 5712 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
411e1bfb AM |
5713 | return FALSE; |
5714 | } | |
65f38f15 | 5715 | |
d881513a AM |
5716 | if ((gent->tls_type & TLS_LD) != 0 |
5717 | && !(h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC)) | |
411e1bfb | 5718 | { |
e717da7e | 5719 | gent->got.offset = ppc64_tlsld_got (gent->owner)->offset; |
951fd09b | 5720 | continue; |
411e1bfb | 5721 | } |
951fd09b | 5722 | |
e717da7e | 5723 | s = ppc64_elf_tdata (gent->owner)->got; |
eea6121a AM |
5724 | gent->got.offset = s->size; |
5725 | s->size | |
d881513a | 5726 | += (gent->tls_type & eh->tls_mask & (TLS_GD | TLS_LD)) ? 16 : 8; |
951fd09b | 5727 | dyn = htab->elf.dynamic_sections_created; |
4e795f50 AM |
5728 | if ((info->shared |
5729 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)) | |
5730 | && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
5731 | || h->root.type != bfd_link_hash_undefweak)) | |
eea6121a | 5732 | ppc64_elf_tdata (gent->owner)->relgot->size |
e7b938ca | 5733 | += (gent->tls_type & eh->tls_mask & TLS_GD |
951fd09b AM |
5734 | ? 2 * sizeof (Elf64_External_Rela) |
5735 | : sizeof (Elf64_External_Rela)); | |
411e1bfb AM |
5736 | } |
5737 | else | |
5738 | gent->got.offset = (bfd_vma) -1; | |
65f38f15 | 5739 | |
65f38f15 | 5740 | if (eh->dyn_relocs == NULL) |
b34976b6 | 5741 | return TRUE; |
65f38f15 AM |
5742 | |
5743 | /* In the shared -Bsymbolic case, discard space allocated for | |
5744 | dynamic pc-relative relocs against symbols which turn out to be | |
5745 | defined in regular objects. For the normal shared case, discard | |
5746 | space for relocs that have become local due to symbol visibility | |
5747 | changes. */ | |
5748 | ||
5749 | if (info->shared) | |
5750 | { | |
9c7a29a3 AM |
5751 | /* Relocs that use pc_count are those that appear on a call insn, |
5752 | or certain REL relocs (see MUST_BE_DYN_RELOC) that can be | |
5753 | generated via assembly. We want calls to protected symbols to | |
5754 | resolve directly to the function rather than going via the plt. | |
5755 | If people want function pointer comparisons to work as expected | |
5756 | then they should avoid writing weird assembly. */ | |
09695f56 | 5757 | if (SYMBOL_CALLS_LOCAL (info, h)) |
65f38f15 AM |
5758 | { |
5759 | struct ppc_dyn_relocs **pp; | |
5760 | ||
5761 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) | |
5bd4f169 | 5762 | { |
65f38f15 AM |
5763 | p->count -= p->pc_count; |
5764 | p->pc_count = 0; | |
5765 | if (p->count == 0) | |
5766 | *pp = p->next; | |
5767 | else | |
5768 | pp = &p->next; | |
5bd4f169 | 5769 | } |
65f38f15 | 5770 | } |
4e795f50 AM |
5771 | |
5772 | /* Also discard relocs on undefined weak syms with non-default | |
5773 | visibility. */ | |
5774 | if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
5775 | && h->root.type == bfd_link_hash_undefweak) | |
5776 | eh->dyn_relocs = NULL; | |
65f38f15 | 5777 | } |
f4656909 | 5778 | else if (ELIMINATE_COPY_RELOCS) |
65f38f15 AM |
5779 | { |
5780 | /* For the non-shared case, discard space for relocs against | |
5781 | symbols which turn out to need copy relocs or are not | |
5782 | dynamic. */ | |
5783 | ||
5784 | if ((h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0 | |
58ac9f71 AM |
5785 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0 |
5786 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0) | |
65f38f15 AM |
5787 | { |
5788 | /* Make sure this symbol is output as a dynamic symbol. | |
5789 | Undefined weak syms won't yet be marked as dynamic. */ | |
5790 | if (h->dynindx == -1 | |
5791 | && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0) | |
5792 | { | |
c152c796 | 5793 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 5794 | return FALSE; |
65f38f15 AM |
5795 | } |
5796 | ||
5797 | /* If that succeeded, we know we'll be keeping all the | |
5798 | relocs. */ | |
5799 | if (h->dynindx != -1) | |
5800 | goto keep; | |
5801 | } | |
5802 | ||
5803 | eh->dyn_relocs = NULL; | |
5804 | ||
ec338859 | 5805 | keep: ; |
65f38f15 AM |
5806 | } |
5807 | ||
5808 | /* Finally, allocate space. */ | |
5809 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
5810 | { | |
5811 | asection *sreloc = elf_section_data (p->sec)->sreloc; | |
eea6121a | 5812 | sreloc->size += p->count * sizeof (Elf64_External_Rela); |
65f38f15 AM |
5813 | } |
5814 | ||
b34976b6 | 5815 | return TRUE; |
65f38f15 AM |
5816 | } |
5817 | ||
5818 | /* Find any dynamic relocs that apply to read-only sections. */ | |
5819 | ||
b34976b6 | 5820 | static bfd_boolean |
4ce794b7 | 5821 | readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf) |
65f38f15 AM |
5822 | { |
5823 | struct ppc_link_hash_entry *eh; | |
5824 | struct ppc_dyn_relocs *p; | |
5825 | ||
e92d460e AM |
5826 | if (h->root.type == bfd_link_hash_warning) |
5827 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
5828 | ||
65f38f15 AM |
5829 | eh = (struct ppc_link_hash_entry *) h; |
5830 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
5831 | { | |
5832 | asection *s = p->sec->output_section; | |
5833 | ||
5834 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
5835 | { | |
4ce794b7 | 5836 | struct bfd_link_info *info = inf; |
65f38f15 AM |
5837 | |
5838 | info->flags |= DF_TEXTREL; | |
5839 | ||
5840 | /* Not an error, just cut short the traversal. */ | |
b34976b6 | 5841 | return FALSE; |
65f38f15 AM |
5842 | } |
5843 | } | |
b34976b6 | 5844 | return TRUE; |
65f38f15 AM |
5845 | } |
5846 | ||
5847 | /* Set the sizes of the dynamic sections. */ | |
5848 | ||
b34976b6 | 5849 | static bfd_boolean |
4ce794b7 AM |
5850 | ppc64_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED, |
5851 | struct bfd_link_info *info) | |
65f38f15 AM |
5852 | { |
5853 | struct ppc_link_hash_table *htab; | |
5854 | bfd *dynobj; | |
5855 | asection *s; | |
b34976b6 | 5856 | bfd_boolean relocs; |
65f38f15 AM |
5857 | bfd *ibfd; |
5858 | ||
5859 | htab = ppc_hash_table (info); | |
5860 | dynobj = htab->elf.dynobj; | |
5861 | if (dynobj == NULL) | |
5862 | abort (); | |
5863 | ||
5864 | if (htab->elf.dynamic_sections_created) | |
5865 | { | |
5866 | /* Set the contents of the .interp section to the interpreter. */ | |
36af4a4e | 5867 | if (info->executable) |
65f38f15 AM |
5868 | { |
5869 | s = bfd_get_section_by_name (dynobj, ".interp"); | |
5870 | if (s == NULL) | |
5871 | abort (); | |
eea6121a | 5872 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; |
65f38f15 AM |
5873 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; |
5874 | } | |
5875 | } | |
5876 | ||
5877 | /* Set up .got offsets for local syms, and space for local dynamic | |
5878 | relocs. */ | |
5879 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
5880 | { | |
411e1bfb AM |
5881 | struct got_entry **lgot_ents; |
5882 | struct got_entry **end_lgot_ents; | |
e7b938ca | 5883 | char *lgot_masks; |
65f38f15 AM |
5884 | bfd_size_type locsymcount; |
5885 | Elf_Internal_Shdr *symtab_hdr; | |
5886 | asection *srel; | |
5887 | ||
5888 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour) | |
5889 | continue; | |
5890 | ||
e717da7e AM |
5891 | if (ppc64_tlsld_got (ibfd)->refcount > 0) |
5892 | { | |
5893 | s = ppc64_elf_tdata (ibfd)->got; | |
eea6121a AM |
5894 | ppc64_tlsld_got (ibfd)->offset = s->size; |
5895 | s->size += 16; | |
e717da7e AM |
5896 | if (info->shared) |
5897 | { | |
5898 | srel = ppc64_elf_tdata (ibfd)->relgot; | |
eea6121a | 5899 | srel->size += sizeof (Elf64_External_Rela); |
e717da7e AM |
5900 | } |
5901 | } | |
5902 | else | |
5903 | ppc64_tlsld_got (ibfd)->offset = (bfd_vma) -1; | |
5904 | ||
65f38f15 AM |
5905 | for (s = ibfd->sections; s != NULL; s = s->next) |
5906 | { | |
ec338859 | 5907 | struct ppc_dyn_relocs *p; |
65f38f15 | 5908 | |
ec338859 AM |
5909 | for (p = *((struct ppc_dyn_relocs **) |
5910 | &elf_section_data (s)->local_dynrel); | |
5911 | p != NULL; | |
5912 | p = p->next) | |
65f38f15 | 5913 | { |
ec338859 AM |
5914 | if (!bfd_is_abs_section (p->sec) |
5915 | && bfd_is_abs_section (p->sec->output_section)) | |
5916 | { | |
5917 | /* Input section has been discarded, either because | |
5918 | it is a copy of a linkonce section or due to | |
5919 | linker script /DISCARD/, so we'll be discarding | |
5920 | the relocs too. */ | |
5921 | } | |
248866a8 | 5922 | else if (p->count != 0) |
ec338859 AM |
5923 | { |
5924 | srel = elf_section_data (p->sec)->sreloc; | |
eea6121a | 5925 | srel->size += p->count * sizeof (Elf64_External_Rela); |
248866a8 AM |
5926 | if ((p->sec->output_section->flags & SEC_READONLY) != 0) |
5927 | info->flags |= DF_TEXTREL; | |
ec338859 | 5928 | } |
65f38f15 AM |
5929 | } |
5930 | } | |
5931 | ||
411e1bfb AM |
5932 | lgot_ents = elf_local_got_ents (ibfd); |
5933 | if (!lgot_ents) | |
65f38f15 AM |
5934 | continue; |
5935 | ||
5936 | symtab_hdr = &elf_tdata (ibfd)->symtab_hdr; | |
5937 | locsymcount = symtab_hdr->sh_info; | |
411e1bfb | 5938 | end_lgot_ents = lgot_ents + locsymcount; |
e7b938ca | 5939 | lgot_masks = (char *) end_lgot_ents; |
e717da7e AM |
5940 | s = ppc64_elf_tdata (ibfd)->got; |
5941 | srel = ppc64_elf_tdata (ibfd)->relgot; | |
e7b938ca | 5942 | for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks) |
65f38f15 | 5943 | { |
411e1bfb AM |
5944 | struct got_entry *ent; |
5945 | ||
5946 | for (ent = *lgot_ents; ent != NULL; ent = ent->next) | |
5947 | if (ent->got.refcount > 0) | |
5948 | { | |
e7b938ca | 5949 | if ((ent->tls_type & *lgot_masks & TLS_LD) != 0) |
411e1bfb | 5950 | { |
e717da7e | 5951 | if (ppc64_tlsld_got (ibfd)->offset == (bfd_vma) -1) |
411e1bfb | 5952 | { |
eea6121a AM |
5953 | ppc64_tlsld_got (ibfd)->offset = s->size; |
5954 | s->size += 16; | |
411e1bfb | 5955 | if (info->shared) |
eea6121a | 5956 | srel->size += sizeof (Elf64_External_Rela); |
411e1bfb | 5957 | } |
e717da7e | 5958 | ent->got.offset = ppc64_tlsld_got (ibfd)->offset; |
411e1bfb AM |
5959 | } |
5960 | else | |
5961 | { | |
eea6121a | 5962 | ent->got.offset = s->size; |
e7b938ca | 5963 | if ((ent->tls_type & *lgot_masks & TLS_GD) != 0) |
411e1bfb | 5964 | { |
eea6121a | 5965 | s->size += 16; |
411e1bfb | 5966 | if (info->shared) |
eea6121a | 5967 | srel->size += 2 * sizeof (Elf64_External_Rela); |
411e1bfb AM |
5968 | } |
5969 | else | |
5970 | { | |
eea6121a | 5971 | s->size += 8; |
411e1bfb | 5972 | if (info->shared) |
eea6121a | 5973 | srel->size += sizeof (Elf64_External_Rela); |
411e1bfb AM |
5974 | } |
5975 | } | |
5976 | } | |
5977 | else | |
5978 | ent->got.offset = (bfd_vma) -1; | |
65f38f15 AM |
5979 | } |
5980 | } | |
5981 | ||
5982 | /* Allocate global sym .plt and .got entries, and space for global | |
5983 | sym dynamic relocs. */ | |
4ce794b7 | 5984 | elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info); |
65f38f15 AM |
5985 | |
5986 | /* We now have determined the sizes of the various dynamic sections. | |
5987 | Allocate memory for them. */ | |
b34976b6 | 5988 | relocs = FALSE; |
65f38f15 AM |
5989 | for (s = dynobj->sections; s != NULL; s = s->next) |
5990 | { | |
5991 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
5992 | continue; | |
5993 | ||
4ce794b7 | 5994 | if (s == htab->brlt || s == htab->relbrlt) |
721956f4 AM |
5995 | /* These haven't been allocated yet; don't strip. */ |
5996 | continue; | |
e717da7e AM |
5997 | else if (s == htab->got |
5998 | || s == htab->plt | |
4ce794b7 | 5999 | || s == htab->glink) |
65f38f15 AM |
6000 | { |
6001 | /* Strip this section if we don't need it; see the | |
6002 | comment below. */ | |
5bd4f169 | 6003 | } |
65f38f15 | 6004 | else if (strncmp (bfd_get_section_name (dynobj, s), ".rela", 5) == 0) |
5bd4f169 | 6005 | { |
eea6121a | 6006 | if (s->size == 0) |
5bd4f169 AM |
6007 | { |
6008 | /* If we don't need this section, strip it from the | |
6009 | output file. This is mostly to handle .rela.bss and | |
6010 | .rela.plt. We must create both sections in | |
6011 | create_dynamic_sections, because they must be created | |
6012 | before the linker maps input sections to output | |
6013 | sections. The linker does that before | |
6014 | adjust_dynamic_symbol is called, and it is that | |
6015 | function which decides whether anything needs to go | |
6016 | into these sections. */ | |
5bd4f169 AM |
6017 | } |
6018 | else | |
6019 | { | |
4ce794b7 | 6020 | if (s != htab->relplt) |
b34976b6 | 6021 | relocs = TRUE; |
5bd4f169 AM |
6022 | |
6023 | /* We use the reloc_count field as a counter if we need | |
6024 | to copy relocs into the output file. */ | |
6025 | s->reloc_count = 0; | |
6026 | } | |
6027 | } | |
65f38f15 | 6028 | else |
5bd4f169 AM |
6029 | { |
6030 | /* It's not one of our sections, so don't allocate space. */ | |
6031 | continue; | |
6032 | } | |
6033 | ||
eea6121a | 6034 | if (s->size == 0) |
5bd4f169 AM |
6035 | { |
6036 | _bfd_strip_section_from_output (info, s); | |
6037 | continue; | |
6038 | } | |
6039 | ||
5f333394 | 6040 | /* .plt is in the bss section. We don't initialise it. */ |
680a3378 | 6041 | if (s == htab->plt) |
5f333394 AM |
6042 | continue; |
6043 | ||
65f38f15 AM |
6044 | /* Allocate memory for the section contents. We use bfd_zalloc |
6045 | here in case unused entries are not reclaimed before the | |
6046 | section's contents are written out. This should not happen, | |
411e1bfb AM |
6047 | but this way if it does we get a R_PPC64_NONE reloc in .rela |
6048 | sections instead of garbage. | |
6049 | We also rely on the section contents being zero when writing | |
6050 | the GOT. */ | |
eea6121a | 6051 | s->contents = bfd_zalloc (dynobj, s->size); |
65f38f15 | 6052 | if (s->contents == NULL) |
b34976b6 | 6053 | return FALSE; |
5bd4f169 AM |
6054 | } |
6055 | ||
e717da7e AM |
6056 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) |
6057 | { | |
6058 | s = ppc64_elf_tdata (ibfd)->got; | |
6059 | if (s != NULL && s != htab->got) | |
6060 | { | |
eea6121a | 6061 | if (s->size == 0) |
e717da7e AM |
6062 | _bfd_strip_section_from_output (info, s); |
6063 | else | |
6064 | { | |
eea6121a | 6065 | s->contents = bfd_zalloc (ibfd, s->size); |
e717da7e AM |
6066 | if (s->contents == NULL) |
6067 | return FALSE; | |
6068 | } | |
6069 | } | |
6070 | s = ppc64_elf_tdata (ibfd)->relgot; | |
6071 | if (s != NULL) | |
6072 | { | |
eea6121a | 6073 | if (s->size == 0) |
e717da7e AM |
6074 | _bfd_strip_section_from_output (info, s); |
6075 | else | |
6076 | { | |
eea6121a | 6077 | s->contents = bfd_zalloc (ibfd, s->size); |
e717da7e AM |
6078 | if (s->contents == NULL) |
6079 | return FALSE; | |
6080 | relocs = TRUE; | |
6081 | s->reloc_count = 0; | |
6082 | } | |
6083 | } | |
6084 | } | |
6085 | ||
e86ce104 | 6086 | if (htab->elf.dynamic_sections_created) |
5bd4f169 AM |
6087 | { |
6088 | /* Add some entries to the .dynamic section. We fill in the | |
6089 | values later, in ppc64_elf_finish_dynamic_sections, but we | |
6090 | must add the entries now so that we get the correct size for | |
6091 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
6092 | dynamic linker and used by the debugger. */ | |
dc810e39 | 6093 | #define add_dynamic_entry(TAG, VAL) \ |
5a580b3a | 6094 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) |
dc810e39 | 6095 | |
36af4a4e | 6096 | if (info->executable) |
5bd4f169 | 6097 | { |
dc810e39 | 6098 | if (!add_dynamic_entry (DT_DEBUG, 0)) |
b34976b6 | 6099 | return FALSE; |
5bd4f169 AM |
6100 | } |
6101 | ||
eea6121a | 6102 | if (htab->plt != NULL && htab->plt->size != 0) |
5bd4f169 | 6103 | { |
dc810e39 AM |
6104 | if (!add_dynamic_entry (DT_PLTGOT, 0) |
6105 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
6106 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
5d1634d7 AM |
6107 | || !add_dynamic_entry (DT_JMPREL, 0) |
6108 | || !add_dynamic_entry (DT_PPC64_GLINK, 0)) | |
b34976b6 | 6109 | return FALSE; |
5bd4f169 AM |
6110 | } |
6111 | ||
19397422 AM |
6112 | if (NO_OPD_RELOCS) |
6113 | { | |
6114 | if (!add_dynamic_entry (DT_PPC64_OPD, 0) | |
6115 | || !add_dynamic_entry (DT_PPC64_OPDSZ, 0)) | |
b34976b6 | 6116 | return FALSE; |
19397422 AM |
6117 | } |
6118 | ||
5bd4f169 AM |
6119 | if (relocs) |
6120 | { | |
dc810e39 AM |
6121 | if (!add_dynamic_entry (DT_RELA, 0) |
6122 | || !add_dynamic_entry (DT_RELASZ, 0) | |
6123 | || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela))) | |
b34976b6 | 6124 | return FALSE; |
5bd4f169 | 6125 | |
65f38f15 AM |
6126 | /* If any dynamic relocs apply to a read-only section, |
6127 | then we need a DT_TEXTREL entry. */ | |
248866a8 | 6128 | if ((info->flags & DF_TEXTREL) == 0) |
4ce794b7 | 6129 | elf_link_hash_traverse (&htab->elf, readonly_dynrelocs, info); |
5bd4f169 | 6130 | |
65f38f15 | 6131 | if ((info->flags & DF_TEXTREL) != 0) |
5bd4f169 | 6132 | { |
65f38f15 | 6133 | if (!add_dynamic_entry (DT_TEXTREL, 0)) |
b34976b6 | 6134 | return FALSE; |
5bd4f169 | 6135 | } |
5bd4f169 | 6136 | } |
5bd4f169 | 6137 | } |
65f38f15 | 6138 | #undef add_dynamic_entry |
5bd4f169 | 6139 | |
b34976b6 | 6140 | return TRUE; |
5bd4f169 AM |
6141 | } |
6142 | ||
721956f4 | 6143 | /* Determine the type of stub needed, if any, for a call. */ |
5bd4f169 | 6144 | |
4ce794b7 AM |
6145 | static inline enum ppc_stub_type |
6146 | ppc_type_of_stub (asection *input_sec, | |
6147 | const Elf_Internal_Rela *rel, | |
6148 | struct ppc_link_hash_entry **hash, | |
6149 | bfd_vma destination) | |
5bd4f169 | 6150 | { |
721956f4 AM |
6151 | struct ppc_link_hash_entry *h = *hash; |
6152 | bfd_vma location; | |
6153 | bfd_vma branch_offset; | |
6154 | bfd_vma max_branch_offset; | |
4ce794b7 | 6155 | enum elf_ppc64_reloc_type r_type; |
5bd4f169 | 6156 | |
721956f4 AM |
6157 | if (h != NULL) |
6158 | { | |
6159 | if (h->oh != NULL | |
34814b9f | 6160 | && h->oh->elf.dynindx != -1) |
5bd4f169 | 6161 | { |
411e1bfb | 6162 | struct plt_entry *ent; |
34814b9f | 6163 | for (ent = h->oh->elf.plt.plist; ent != NULL; ent = ent->next) |
411e1bfb AM |
6164 | if (ent->addend == rel->r_addend |
6165 | && ent->plt.offset != (bfd_vma) -1) | |
6166 | { | |
34814b9f | 6167 | *hash = h->oh; |
411e1bfb AM |
6168 | return ppc_stub_plt_call; |
6169 | } | |
5bd4f169 AM |
6170 | } |
6171 | ||
ee7de3e6 AM |
6172 | if (!(h->elf.root.type == bfd_link_hash_defined |
6173 | || h->elf.root.type == bfd_link_hash_defweak) | |
6174 | || h->elf.root.u.def.section->output_section == NULL) | |
721956f4 | 6175 | return ppc_stub_none; |
5d1634d7 | 6176 | } |
5d1634d7 | 6177 | |
721956f4 AM |
6178 | /* Determine where the call point is. */ |
6179 | location = (input_sec->output_offset | |
6180 | + input_sec->output_section->vma | |
6181 | + rel->r_offset); | |
5d1634d7 | 6182 | |
721956f4 AM |
6183 | branch_offset = destination - location; |
6184 | r_type = ELF64_R_TYPE (rel->r_info); | |
5d1634d7 | 6185 | |
721956f4 AM |
6186 | /* Determine if a long branch stub is needed. */ |
6187 | max_branch_offset = 1 << 25; | |
4ce794b7 | 6188 | if (r_type != R_PPC64_REL24) |
721956f4 | 6189 | max_branch_offset = 1 << 15; |
5d1634d7 | 6190 | |
721956f4 AM |
6191 | if (branch_offset + max_branch_offset >= 2 * max_branch_offset) |
6192 | /* We need a stub. Figure out whether a long_branch or plt_branch | |
6193 | is needed later. */ | |
6194 | return ppc_stub_long_branch; | |
5d1634d7 | 6195 | |
721956f4 | 6196 | return ppc_stub_none; |
5d1634d7 AM |
6197 | } |
6198 | ||
6199 | /* Build a .plt call stub. */ | |
6200 | ||
4ce794b7 AM |
6201 | static inline bfd_byte * |
6202 | build_plt_stub (bfd *obfd, bfd_byte *p, int offset) | |
5d1634d7 AM |
6203 | { |
6204 | #define PPC_LO(v) ((v) & 0xffff) | |
6205 | #define PPC_HI(v) (((v) >> 16) & 0xffff) | |
6206 | #define PPC_HA(v) PPC_HI ((v) + 0x8000) | |
6207 | ||
5d1634d7 | 6208 | bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (offset), p), p += 4; |
ad8e1ba5 | 6209 | bfd_put_32 (obfd, STD_R2_40R1, p), p += 4; |
5d1634d7 AM |
6210 | bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset), p), p += 4; |
6211 | if (PPC_HA (offset + 8) != PPC_HA (offset)) | |
ad8e1ba5 | 6212 | bfd_put_32 (obfd, ADDIS_R12_R12 | 1, p), p += 4; |
5d1634d7 AM |
6213 | offset += 8; |
6214 | bfd_put_32 (obfd, LD_R2_0R12 | PPC_LO (offset), p), p += 4; | |
6215 | if (PPC_HA (offset + 8) != PPC_HA (offset)) | |
ad8e1ba5 | 6216 | bfd_put_32 (obfd, ADDIS_R12_R12 | 1, p), p += 4; |
5d1634d7 AM |
6217 | offset += 8; |
6218 | bfd_put_32 (obfd, MTCTR_R11, p), p += 4; | |
6219 | bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset), p), p += 4; | |
6220 | bfd_put_32 (obfd, BCTR, p), p += 4; | |
6221 | return p; | |
6222 | } | |
6223 | ||
b34976b6 | 6224 | static bfd_boolean |
4ce794b7 | 6225 | ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg) |
5d1634d7 | 6226 | { |
721956f4 AM |
6227 | struct ppc_stub_hash_entry *stub_entry; |
6228 | struct ppc_branch_hash_entry *br_entry; | |
5d1634d7 AM |
6229 | struct bfd_link_info *info; |
6230 | struct ppc_link_hash_table *htab; | |
721956f4 AM |
6231 | bfd_byte *loc; |
6232 | bfd_byte *p; | |
6233 | unsigned int indx; | |
411e1bfb | 6234 | struct plt_entry *ent; |
721956f4 AM |
6235 | bfd_vma off; |
6236 | int size; | |
5d1634d7 | 6237 | |
721956f4 AM |
6238 | /* Massage our args to the form they really have. */ |
6239 | stub_entry = (struct ppc_stub_hash_entry *) gen_entry; | |
4ce794b7 | 6240 | info = in_arg; |
5d1634d7 | 6241 | |
5d1634d7 AM |
6242 | htab = ppc_hash_table (info); |
6243 | ||
721956f4 | 6244 | /* Make a note of the offset within the stubs for this entry. */ |
eea6121a | 6245 | stub_entry->stub_offset = stub_entry->stub_sec->size; |
97b639ba | 6246 | loc = stub_entry->stub_sec->contents + stub_entry->stub_offset; |
721956f4 | 6247 | |
4ce794b7 | 6248 | htab->stub_count[stub_entry->stub_type - 1] += 1; |
721956f4 | 6249 | switch (stub_entry->stub_type) |
5d1634d7 | 6250 | { |
721956f4 | 6251 | case ppc_stub_long_branch: |
ad8e1ba5 | 6252 | case ppc_stub_long_branch_r2off: |
721956f4 AM |
6253 | /* Branches are relative. This is where we are going to. */ |
6254 | off = (stub_entry->target_value | |
6255 | + stub_entry->target_section->output_offset | |
6256 | + stub_entry->target_section->output_section->vma); | |
5d1634d7 | 6257 | |
721956f4 AM |
6258 | /* And this is where we are coming from. */ |
6259 | off -= (stub_entry->stub_offset | |
97b639ba AM |
6260 | + stub_entry->stub_sec->output_offset |
6261 | + stub_entry->stub_sec->output_section->vma); | |
e86ce104 | 6262 | |
ad8e1ba5 AM |
6263 | if (stub_entry->stub_type != ppc_stub_long_branch_r2off) |
6264 | size = 4; | |
6265 | else | |
6266 | { | |
6267 | bfd_vma r2off; | |
6268 | ||
6269 | r2off = (htab->stub_group[stub_entry->target_section->id].toc_off | |
6270 | - htab->stub_group[stub_entry->id_sec->id].toc_off); | |
97b639ba | 6271 | bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc); |
ad8e1ba5 | 6272 | loc += 4; |
97b639ba | 6273 | bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc); |
ad8e1ba5 | 6274 | loc += 4; |
97b639ba | 6275 | bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc); |
ad8e1ba5 AM |
6276 | loc += 4; |
6277 | off -= 12; | |
6278 | size = 16; | |
6279 | } | |
97b639ba | 6280 | bfd_put_32 (htab->stub_bfd, B_DOT | (off & 0x3fffffc), loc); |
ad8e1ba5 AM |
6281 | |
6282 | BFD_ASSERT (off + (1 << 25) < (bfd_vma) (1 << 26)); | |
721956f4 | 6283 | break; |
e86ce104 | 6284 | |
721956f4 | 6285 | case ppc_stub_plt_branch: |
ad8e1ba5 | 6286 | case ppc_stub_plt_branch_r2off: |
721956f4 AM |
6287 | br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table, |
6288 | stub_entry->root.string + 9, | |
b34976b6 | 6289 | FALSE, FALSE); |
721956f4 AM |
6290 | if (br_entry == NULL) |
6291 | { | |
6292 | (*_bfd_error_handler) (_("can't find branch stub `%s'"), | |
6293 | stub_entry->root.string + 9); | |
b34976b6 AM |
6294 | htab->stub_error = TRUE; |
6295 | return FALSE; | |
721956f4 AM |
6296 | } |
6297 | ||
6298 | off = (stub_entry->target_value | |
6299 | + stub_entry->target_section->output_offset | |
6300 | + stub_entry->target_section->output_section->vma); | |
6301 | ||
4ce794b7 AM |
6302 | bfd_put_64 (htab->brlt->owner, off, |
6303 | htab->brlt->contents + br_entry->offset); | |
721956f4 AM |
6304 | |
6305 | if (info->shared) | |
6306 | { | |
6307 | /* Create a reloc for the branch lookup table entry. */ | |
6308 | Elf_Internal_Rela rela; | |
ad8e1ba5 | 6309 | bfd_byte *rl; |
5d1634d7 | 6310 | |
721956f4 | 6311 | rela.r_offset = (br_entry->offset |
4ce794b7 AM |
6312 | + htab->brlt->output_offset |
6313 | + htab->brlt->output_section->vma); | |
721956f4 AM |
6314 | rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); |
6315 | rela.r_addend = off; | |
6316 | ||
4ce794b7 AM |
6317 | rl = htab->relbrlt->contents; |
6318 | rl += htab->relbrlt->reloc_count++ * sizeof (Elf64_External_Rela); | |
6319 | bfd_elf64_swap_reloca_out (htab->relbrlt->owner, &rela, rl); | |
721956f4 AM |
6320 | } |
6321 | ||
6322 | off = (br_entry->offset | |
4ce794b7 AM |
6323 | + htab->brlt->output_offset |
6324 | + htab->brlt->output_section->vma | |
6325 | - elf_gp (htab->brlt->output_section->owner) | |
ad8e1ba5 | 6326 | - htab->stub_group[stub_entry->id_sec->id].toc_off); |
721956f4 | 6327 | |
ad8e1ba5 | 6328 | if (off + 0x80008000 > 0xffffffff || (off & 7) != 0) |
5d1634d7 AM |
6329 | { |
6330 | (*_bfd_error_handler) | |
e86ce104 | 6331 | (_("linkage table error against `%s'"), |
721956f4 | 6332 | stub_entry->root.string); |
5d1634d7 | 6333 | bfd_set_error (bfd_error_bad_value); |
b34976b6 AM |
6334 | htab->stub_error = TRUE; |
6335 | return FALSE; | |
5d1634d7 | 6336 | } |
41bd81ab | 6337 | |
721956f4 | 6338 | indx = off; |
ad8e1ba5 AM |
6339 | if (stub_entry->stub_type != ppc_stub_plt_branch_r2off) |
6340 | { | |
97b639ba | 6341 | bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (indx), loc); |
ad8e1ba5 | 6342 | loc += 4; |
97b639ba | 6343 | bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (indx), loc); |
ad8e1ba5 AM |
6344 | size = 16; |
6345 | } | |
6346 | else | |
6347 | { | |
6348 | bfd_vma r2off; | |
6349 | ||
6350 | r2off = (htab->stub_group[stub_entry->target_section->id].toc_off | |
6351 | - htab->stub_group[stub_entry->id_sec->id].toc_off); | |
97b639ba | 6352 | bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc); |
ad8e1ba5 | 6353 | loc += 4; |
97b639ba | 6354 | bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (indx), loc); |
ad8e1ba5 | 6355 | loc += 4; |
97b639ba | 6356 | bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (indx), loc); |
ad8e1ba5 | 6357 | loc += 4; |
97b639ba | 6358 | bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc); |
ad8e1ba5 | 6359 | loc += 4; |
97b639ba | 6360 | bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc); |
ad8e1ba5 AM |
6361 | size = 28; |
6362 | } | |
6363 | loc += 4; | |
97b639ba | 6364 | bfd_put_32 (htab->stub_bfd, MTCTR_R11, loc); |
ad8e1ba5 | 6365 | loc += 4; |
97b639ba | 6366 | bfd_put_32 (htab->stub_bfd, BCTR, loc); |
721956f4 | 6367 | break; |
5d1634d7 | 6368 | |
721956f4 | 6369 | case ppc_stub_plt_call: |
c862ae31 AM |
6370 | /* Do the best we can for shared libraries built without |
6371 | exporting ".foo" for each "foo". This can happen when symbol | |
6372 | versioning scripts strip all bar a subset of symbols. */ | |
34814b9f AM |
6373 | if (stub_entry->h->oh->elf.root.type != bfd_link_hash_defined |
6374 | && stub_entry->h->oh->elf.root.type != bfd_link_hash_defweak) | |
c862ae31 AM |
6375 | { |
6376 | /* Point the symbol at the stub. There may be multiple stubs, | |
6377 | we don't really care; The main thing is to make this sym | |
8f3bab57 AM |
6378 | defined somewhere. Maybe defining the symbol in the stub |
6379 | section is a silly idea. If we didn't do this, htab->top_id | |
6380 | could disappear. */ | |
34814b9f AM |
6381 | stub_entry->h->oh->elf.root.type = bfd_link_hash_defined; |
6382 | stub_entry->h->oh->elf.root.u.def.section = stub_entry->stub_sec; | |
6383 | stub_entry->h->oh->elf.root.u.def.value = stub_entry->stub_offset; | |
c862ae31 AM |
6384 | } |
6385 | ||
721956f4 | 6386 | /* Now build the stub. */ |
411e1bfb AM |
6387 | off = (bfd_vma) -1; |
6388 | for (ent = stub_entry->h->elf.plt.plist; ent != NULL; ent = ent->next) | |
6389 | if (ent->addend == stub_entry->addend) | |
6390 | { | |
6391 | off = ent->plt.offset; | |
6392 | break; | |
6393 | } | |
721956f4 AM |
6394 | if (off >= (bfd_vma) -2) |
6395 | abort (); | |
6396 | ||
6397 | off &= ~ (bfd_vma) 1; | |
4ce794b7 AM |
6398 | off += (htab->plt->output_offset |
6399 | + htab->plt->output_section->vma | |
6400 | - elf_gp (htab->plt->output_section->owner) | |
ad8e1ba5 | 6401 | - htab->stub_group[stub_entry->id_sec->id].toc_off); |
721956f4 | 6402 | |
ad8e1ba5 | 6403 | if (off + 0x80008000 > 0xffffffff || (off & 7) != 0) |
721956f4 AM |
6404 | { |
6405 | (*_bfd_error_handler) | |
6406 | (_("linkage table error against `%s'"), | |
6407 | stub_entry->h->elf.root.root.string); | |
6408 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 AM |
6409 | htab->stub_error = TRUE; |
6410 | return FALSE; | |
721956f4 AM |
6411 | } |
6412 | ||
97b639ba | 6413 | p = build_plt_stub (htab->stub_bfd, loc, off); |
721956f4 AM |
6414 | size = p - loc; |
6415 | break; | |
6416 | ||
6417 | default: | |
6418 | BFD_FAIL (); | |
b34976b6 | 6419 | return FALSE; |
721956f4 AM |
6420 | } |
6421 | ||
eea6121a | 6422 | stub_entry->stub_sec->size += size; |
97b639ba AM |
6423 | |
6424 | if (htab->emit_stub_syms | |
6425 | && !(stub_entry->stub_type == ppc_stub_plt_call | |
34814b9f AM |
6426 | && stub_entry->h->oh->elf.root.type == bfd_link_hash_defined |
6427 | && stub_entry->h->oh->elf.root.u.def.section == stub_entry->stub_sec | |
6428 | && stub_entry->h->oh->elf.root.u.def.value == stub_entry->stub_offset)) | |
97b639ba AM |
6429 | { |
6430 | struct elf_link_hash_entry *h; | |
6431 | h = elf_link_hash_lookup (&htab->elf, stub_entry->root.string, | |
6432 | TRUE, FALSE, FALSE); | |
6433 | if (h == NULL) | |
6434 | return FALSE; | |
6435 | if (h->root.type == bfd_link_hash_new) | |
6436 | { | |
6437 | h->root.type = bfd_link_hash_defined; | |
6438 | h->root.u.def.section = stub_entry->stub_sec; | |
6439 | h->root.u.def.value = stub_entry->stub_offset; | |
6440 | h->elf_link_hash_flags = (ELF_LINK_HASH_REF_REGULAR | |
6441 | | ELF_LINK_HASH_DEF_REGULAR | |
6442 | | ELF_LINK_HASH_REF_REGULAR_NONWEAK | |
6443 | | ELF_LINK_FORCED_LOCAL); | |
6444 | } | |
6445 | } | |
6446 | ||
b34976b6 | 6447 | return TRUE; |
721956f4 AM |
6448 | } |
6449 | ||
6450 | /* As above, but don't actually build the stub. Just bump offset so | |
6451 | we know stub section sizes, and select plt_branch stubs where | |
6452 | long_branch stubs won't do. */ | |
6453 | ||
b34976b6 | 6454 | static bfd_boolean |
4ce794b7 | 6455 | ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg) |
721956f4 AM |
6456 | { |
6457 | struct ppc_stub_hash_entry *stub_entry; | |
63bc6f6c | 6458 | struct bfd_link_info *info; |
721956f4 AM |
6459 | struct ppc_link_hash_table *htab; |
6460 | bfd_vma off; | |
6461 | int size; | |
6462 | ||
6463 | /* Massage our args to the form they really have. */ | |
6464 | stub_entry = (struct ppc_stub_hash_entry *) gen_entry; | |
63bc6f6c AM |
6465 | info = in_arg; |
6466 | ||
6467 | htab = ppc_hash_table (info); | |
721956f4 AM |
6468 | |
6469 | if (stub_entry->stub_type == ppc_stub_plt_call) | |
6470 | { | |
411e1bfb | 6471 | struct plt_entry *ent; |
58ac9f71 | 6472 | off = (bfd_vma) -1; |
411e1bfb AM |
6473 | for (ent = stub_entry->h->elf.plt.plist; ent != NULL; ent = ent->next) |
6474 | if (ent->addend == stub_entry->addend) | |
6475 | { | |
6476 | off = ent->plt.offset & ~(bfd_vma) 1; | |
6477 | break; | |
6478 | } | |
58ac9f71 | 6479 | if (off >= (bfd_vma) -2) |
411e1bfb | 6480 | abort (); |
4ce794b7 AM |
6481 | off += (htab->plt->output_offset |
6482 | + htab->plt->output_section->vma | |
6483 | - elf_gp (htab->plt->output_section->owner) | |
ad8e1ba5 | 6484 | - htab->stub_group[stub_entry->id_sec->id].toc_off); |
721956f4 | 6485 | |
ad8e1ba5 | 6486 | size = PLT_CALL_STUB_SIZE; |
4ce794b7 | 6487 | if (PPC_HA (off + 16) != PPC_HA (off)) |
721956f4 AM |
6488 | size += 4; |
6489 | } | |
6490 | else | |
6491 | { | |
ad8e1ba5 AM |
6492 | /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off |
6493 | variants. */ | |
721956f4 AM |
6494 | off = (stub_entry->target_value |
6495 | + stub_entry->target_section->output_offset | |
6496 | + stub_entry->target_section->output_section->vma); | |
eea6121a | 6497 | off -= (stub_entry->stub_sec->size |
721956f4 AM |
6498 | + stub_entry->stub_sec->output_offset |
6499 | + stub_entry->stub_sec->output_section->vma); | |
6500 | ||
ad8e1ba5 AM |
6501 | /* Reset the stub type from the plt variant in case we now |
6502 | can reach with a shorter stub. */ | |
6503 | if (stub_entry->stub_type >= ppc_stub_plt_branch) | |
6504 | stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch; | |
6505 | ||
6506 | size = 4; | |
6507 | if (stub_entry->stub_type == ppc_stub_long_branch_r2off) | |
6508 | { | |
6509 | off -= 12; | |
6510 | size = 16; | |
6511 | } | |
6512 | ||
6513 | /* If the branch offset if too big, use a ppc_stub_plt_branch. */ | |
721956f4 AM |
6514 | if (off + (1 << 25) >= (bfd_vma) (1 << 26)) |
6515 | { | |
6516 | struct ppc_branch_hash_entry *br_entry; | |
6517 | ||
6518 | br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table, | |
6519 | stub_entry->root.string + 9, | |
b34976b6 | 6520 | TRUE, FALSE); |
721956f4 AM |
6521 | if (br_entry == NULL) |
6522 | { | |
6523 | (*_bfd_error_handler) (_("can't build branch stub `%s'"), | |
6524 | stub_entry->root.string + 9); | |
b34976b6 AM |
6525 | htab->stub_error = TRUE; |
6526 | return FALSE; | |
721956f4 AM |
6527 | } |
6528 | ||
6529 | if (br_entry->iter != htab->stub_iteration) | |
6530 | { | |
6531 | br_entry->iter = htab->stub_iteration; | |
eea6121a AM |
6532 | br_entry->offset = htab->brlt->size; |
6533 | htab->brlt->size += 8; | |
63bc6f6c AM |
6534 | |
6535 | if (info->shared) | |
eea6121a | 6536 | htab->relbrlt->size += sizeof (Elf64_External_Rela); |
721956f4 | 6537 | } |
ad8e1ba5 AM |
6538 | |
6539 | stub_entry->stub_type += ppc_stub_plt_branch - ppc_stub_long_branch; | |
721956f4 | 6540 | size = 16; |
ad8e1ba5 AM |
6541 | if (stub_entry->stub_type != ppc_stub_plt_branch) |
6542 | size = 28; | |
721956f4 AM |
6543 | } |
6544 | } | |
6545 | ||
eea6121a | 6546 | stub_entry->stub_sec->size += size; |
b34976b6 | 6547 | return TRUE; |
721956f4 AM |
6548 | } |
6549 | ||
6550 | /* Set up various things so that we can make a list of input sections | |
6551 | for each output section included in the link. Returns -1 on error, | |
cedb70c5 | 6552 | 0 when no stubs will be needed, and 1 on success. */ |
721956f4 AM |
6553 | |
6554 | int | |
4ce794b7 | 6555 | ppc64_elf_setup_section_lists (bfd *output_bfd, struct bfd_link_info *info) |
721956f4 AM |
6556 | { |
6557 | bfd *input_bfd; | |
734b6cf9 | 6558 | int top_id, top_index, id; |
721956f4 | 6559 | asection *section; |
734b6cf9 | 6560 | asection **input_list; |
721956f4 AM |
6561 | bfd_size_type amt; |
6562 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
6563 | ||
4ce794b7 | 6564 | if (htab->brlt == NULL) |
721956f4 AM |
6565 | return 0; |
6566 | ||
1e2f5b6e | 6567 | /* Find the top input section id. */ |
3d6f9012 | 6568 | for (input_bfd = info->input_bfds, top_id = 3; |
721956f4 AM |
6569 | input_bfd != NULL; |
6570 | input_bfd = input_bfd->link_next) | |
6571 | { | |
721956f4 AM |
6572 | for (section = input_bfd->sections; |
6573 | section != NULL; | |
6574 | section = section->next) | |
6575 | { | |
6576 | if (top_id < section->id) | |
6577 | top_id = section->id; | |
6578 | } | |
6579 | } | |
721956f4 | 6580 | |
8f3bab57 | 6581 | htab->top_id = top_id; |
721956f4 | 6582 | amt = sizeof (struct map_stub) * (top_id + 1); |
4ce794b7 | 6583 | htab->stub_group = bfd_zmalloc (amt); |
721956f4 AM |
6584 | if (htab->stub_group == NULL) |
6585 | return -1; | |
6586 | ||
3d6f9012 AM |
6587 | /* Set toc_off for com, und, abs and ind sections. */ |
6588 | for (id = 0; id < 3; id++) | |
6589 | htab->stub_group[id].toc_off = TOC_BASE_OFF; | |
721956f4 | 6590 | |
3d6f9012 | 6591 | elf_gp (output_bfd) = htab->toc_curr = ppc64_elf_toc (output_bfd); |
734b6cf9 AM |
6592 | |
6593 | /* We can't use output_bfd->section_count here to find the top output | |
6594 | section index as some sections may have been removed, and | |
6595 | _bfd_strip_section_from_output doesn't renumber the indices. */ | |
6596 | for (section = output_bfd->sections, top_index = 0; | |
6597 | section != NULL; | |
6598 | section = section->next) | |
6599 | { | |
6600 | if (top_index < section->index) | |
6601 | top_index = section->index; | |
6602 | } | |
6603 | ||
6604 | htab->top_index = top_index; | |
6605 | amt = sizeof (asection *) * (top_index + 1); | |
4ce794b7 | 6606 | input_list = bfd_zmalloc (amt); |
734b6cf9 AM |
6607 | htab->input_list = input_list; |
6608 | if (input_list == NULL) | |
6609 | return -1; | |
6610 | ||
721956f4 AM |
6611 | return 1; |
6612 | } | |
6613 | ||
e717da7e AM |
6614 | /* The linker repeatedly calls this function for each TOC input section |
6615 | and linker generated GOT section. Group input bfds such that the toc | |
6616 | within a group is less than 64k in size. Will break with cute linker | |
6617 | scripts that play games with dot in the output toc section. */ | |
ad8e1ba5 AM |
6618 | |
6619 | void | |
4ce794b7 | 6620 | ppc64_elf_next_toc_section (struct bfd_link_info *info, asection *isec) |
ad8e1ba5 AM |
6621 | { |
6622 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
6623 | ||
6624 | if (!htab->no_multi_toc) | |
6625 | { | |
6626 | bfd_vma addr = isec->output_offset + isec->output_section->vma; | |
6627 | bfd_vma off = addr - htab->toc_curr; | |
eea6121a | 6628 | if (off + isec->size > 0x10000) |
ad8e1ba5 AM |
6629 | { |
6630 | htab->toc_curr = addr; | |
6631 | htab->multi_toc_needed = 1; | |
6632 | } | |
6633 | elf_gp (isec->owner) = (htab->toc_curr | |
6634 | - elf_gp (isec->output_section->owner) | |
6635 | + TOC_BASE_OFF); | |
6636 | } | |
6637 | } | |
6638 | ||
6639 | /* Called after the last call to the above function. */ | |
6640 | ||
6641 | void | |
4ce794b7 AM |
6642 | ppc64_elf_reinit_toc (bfd *output_bfd ATTRIBUTE_UNUSED, |
6643 | struct bfd_link_info *info) | |
ad8e1ba5 AM |
6644 | { |
6645 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
ad8e1ba5 AM |
6646 | |
6647 | /* toc_curr tracks the TOC offset used for code sections below in | |
6648 | ppc64_elf_next_input_section. Start off at 0x8000. */ | |
3d6f9012 | 6649 | htab->toc_curr = TOC_BASE_OFF; |
ad8e1ba5 AM |
6650 | } |
6651 | ||
9b5ecbd0 AM |
6652 | /* No toc references were found in ISEC. If the code in ISEC makes no |
6653 | calls, then there's no need to use toc adjusting stubs when branching | |
6654 | into ISEC. Actually, indirect calls from ISEC are OK as they will | |
6655 | load r2. */ | |
6656 | ||
6657 | static int | |
4ce794b7 | 6658 | toc_adjusting_stub_needed (struct bfd_link_info *info, asection *isec) |
9b5ecbd0 AM |
6659 | { |
6660 | bfd_byte *contents; | |
6661 | bfd_size_type i; | |
6662 | int ret; | |
6663 | int branch_ok; | |
6664 | ||
772119ce AM |
6665 | /* We know none of our code bearing sections will need toc stubs. */ |
6666 | if ((isec->flags & SEC_LINKER_CREATED) != 0) | |
6667 | return 0; | |
6668 | ||
eea6121a | 6669 | if (isec->size == 0) |
082c50f8 AM |
6670 | return 0; |
6671 | ||
9b5ecbd0 AM |
6672 | /* Hack for linux kernel. .fixup contains branches, but only back to |
6673 | the function that hit an exception. */ | |
6674 | branch_ok = strcmp (isec->name, ".fixup") == 0; | |
6675 | ||
6676 | contents = elf_section_data (isec)->this_hdr.contents; | |
6677 | if (contents == NULL) | |
6678 | { | |
eea6121a | 6679 | if (!bfd_malloc_and_get_section (isec->owner, isec, &contents)) |
9b5ecbd0 | 6680 | { |
eea6121a AM |
6681 | if (contents != NULL) |
6682 | free (contents); | |
9b5ecbd0 AM |
6683 | return -1; |
6684 | } | |
6685 | if (info->keep_memory) | |
6686 | elf_section_data (isec)->this_hdr.contents = contents; | |
6687 | } | |
6688 | ||
6689 | /* Code scan, because we don't necessarily have relocs on calls to | |
6690 | static functions. */ | |
6691 | ret = 0; | |
eea6121a | 6692 | for (i = 0; i < isec->size; i += 4) |
9b5ecbd0 AM |
6693 | { |
6694 | unsigned long insn = bfd_get_32 (isec->owner, contents + i); | |
6695 | /* Is this a branch? */ | |
772119ce | 6696 | if ((insn & (0x3f << 26)) == (18 << 26) |
9b5ecbd0 AM |
6697 | /* If branch and link, it's a function call. */ |
6698 | && ((insn & 1) != 0 | |
6699 | /* Sibling calls use a plain branch. I don't know a way | |
6700 | of deciding whether a branch is really a sibling call. */ | |
6701 | || !branch_ok)) | |
6702 | { | |
6703 | ret = 1; | |
6704 | break; | |
6705 | } | |
6706 | } | |
6707 | ||
6708 | if (elf_section_data (isec)->this_hdr.contents != contents) | |
6709 | free (contents); | |
6710 | return ret; | |
6711 | } | |
6712 | ||
721956f4 AM |
6713 | /* The linker repeatedly calls this function for each input section, |
6714 | in the order that input sections are linked into output sections. | |
6715 | Build lists of input sections to determine groupings between which | |
6716 | we may insert linker stubs. */ | |
6717 | ||
9b5ecbd0 | 6718 | bfd_boolean |
4ce794b7 | 6719 | ppc64_elf_next_input_section (struct bfd_link_info *info, asection *isec) |
721956f4 AM |
6720 | { |
6721 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
9b5ecbd0 | 6722 | int ret; |
721956f4 | 6723 | |
734b6cf9 AM |
6724 | if ((isec->output_section->flags & SEC_CODE) != 0 |
6725 | && isec->output_section->index <= htab->top_index) | |
721956f4 | 6726 | { |
734b6cf9 | 6727 | asection **list = htab->input_list + isec->output_section->index; |
3d6f9012 | 6728 | /* Steal the link_sec pointer for our list. */ |
721956f4 | 6729 | #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec) |
3d6f9012 AM |
6730 | /* This happens to make the list in reverse order, |
6731 | which is what we want. */ | |
734b6cf9 AM |
6732 | PREV_SEC (isec) = *list; |
6733 | *list = isec; | |
721956f4 | 6734 | } |
ad8e1ba5 AM |
6735 | |
6736 | /* If a code section has a function that uses the TOC then we need | |
6737 | to use the right TOC (obviously). Also, make sure that .opd gets | |
ee87f2da AM |
6738 | the correct TOC value for R_PPC64_TOC relocs that don't have or |
6739 | can't find their function symbol (shouldn't ever happen now). */ | |
ad8e1ba5 | 6740 | if (isec->has_gp_reloc || (isec->flags & SEC_CODE) == 0) |
9b5ecbd0 AM |
6741 | { |
6742 | if (elf_gp (isec->owner) != 0) | |
6743 | htab->toc_curr = elf_gp (isec->owner); | |
6744 | } | |
6745 | else if ((ret = toc_adjusting_stub_needed (info, isec)) < 0) | |
6746 | return FALSE; | |
6747 | else | |
6748 | isec->has_gp_reloc = ret; | |
ad8e1ba5 AM |
6749 | |
6750 | /* Functions that don't use the TOC can belong in any TOC group. | |
6751 | Use the last TOC base. This happens to make _init and _fini | |
6752 | pasting work. */ | |
6753 | htab->stub_group[isec->id].toc_off = htab->toc_curr; | |
9b5ecbd0 | 6754 | return TRUE; |
721956f4 AM |
6755 | } |
6756 | ||
6757 | /* See whether we can group stub sections together. Grouping stub | |
6758 | sections may result in fewer stubs. More importantly, we need to | |
6759 | put all .init* and .fini* stubs at the beginning of the .init or | |
6760 | .fini output sections respectively, because glibc splits the | |
6761 | _init and _fini functions into multiple parts. Putting a stub in | |
6762 | the middle of a function is not a good idea. */ | |
6763 | ||
6764 | static void | |
4ce794b7 AM |
6765 | group_sections (struct ppc_link_hash_table *htab, |
6766 | bfd_size_type stub_group_size, | |
6767 | bfd_boolean stubs_always_before_branch) | |
721956f4 | 6768 | { |
734b6cf9 AM |
6769 | asection **list = htab->input_list + htab->top_index; |
6770 | do | |
721956f4 | 6771 | { |
734b6cf9 AM |
6772 | asection *tail = *list; |
6773 | while (tail != NULL) | |
721956f4 | 6774 | { |
734b6cf9 AM |
6775 | asection *curr; |
6776 | asection *prev; | |
6777 | bfd_size_type total; | |
6778 | bfd_boolean big_sec; | |
6779 | bfd_vma curr_toc; | |
6780 | ||
6781 | curr = tail; | |
eea6121a | 6782 | total = tail->size; |
734b6cf9 AM |
6783 | big_sec = total >= stub_group_size; |
6784 | curr_toc = htab->stub_group[tail->id].toc_off; | |
6785 | ||
6786 | while ((prev = PREV_SEC (curr)) != NULL | |
6787 | && ((total += curr->output_offset - prev->output_offset) | |
ad8e1ba5 AM |
6788 | < stub_group_size) |
6789 | && htab->stub_group[prev->id].toc_off == curr_toc) | |
734b6cf9 AM |
6790 | curr = prev; |
6791 | ||
6792 | /* OK, the size from the start of CURR to the end is less | |
6793 | than stub_group_size and thus can be handled by one stub | |
6794 | section. (or the tail section is itself larger than | |
6795 | stub_group_size, in which case we may be toast.) We | |
6796 | should really be keeping track of the total size of stubs | |
6797 | added here, as stubs contribute to the final output | |
6798 | section size. That's a little tricky, and this way will | |
6799 | only break if stubs added make the total size more than | |
6800 | 2^25, ie. for the default stub_group_size, if stubs total | |
6801 | more than 2097152 bytes, or nearly 75000 plt call stubs. */ | |
6802 | do | |
721956f4 AM |
6803 | { |
6804 | prev = PREV_SEC (tail); | |
734b6cf9 | 6805 | /* Set up this stub group. */ |
721956f4 AM |
6806 | htab->stub_group[tail->id].link_sec = curr; |
6807 | } | |
734b6cf9 AM |
6808 | while (tail != curr && (tail = prev) != NULL); |
6809 | ||
6810 | /* But wait, there's more! Input sections up to stub_group_size | |
6811 | bytes before the stub section can be handled by it too. | |
6812 | Don't do this if we have a really large section after the | |
6813 | stubs, as adding more stubs increases the chance that | |
6814 | branches may not reach into the stub section. */ | |
6815 | if (!stubs_always_before_branch && !big_sec) | |
6816 | { | |
6817 | total = 0; | |
6818 | while (prev != NULL | |
6819 | && ((total += tail->output_offset - prev->output_offset) | |
6820 | < stub_group_size) | |
6821 | && htab->stub_group[prev->id].toc_off == curr_toc) | |
6822 | { | |
6823 | tail = prev; | |
6824 | prev = PREV_SEC (tail); | |
6825 | htab->stub_group[tail->id].link_sec = curr; | |
6826 | } | |
6827 | } | |
6828 | tail = prev; | |
721956f4 AM |
6829 | } |
6830 | } | |
734b6cf9 AM |
6831 | while (list-- != htab->input_list); |
6832 | free (htab->input_list); | |
721956f4 AM |
6833 | #undef PREV_SEC |
6834 | } | |
6835 | ||
721956f4 AM |
6836 | /* Determine and set the size of the stub section for a final link. |
6837 | ||
6838 | The basic idea here is to examine all the relocations looking for | |
6839 | PC-relative calls to a target that is unreachable with a "bl" | |
6840 | instruction. */ | |
6841 | ||
b34976b6 | 6842 | bfd_boolean |
4ce794b7 | 6843 | ppc64_elf_size_stubs (bfd *output_bfd, |
4ce794b7 AM |
6844 | struct bfd_link_info *info, |
6845 | bfd_signed_vma group_size, | |
6846 | asection *(*add_stub_section) (const char *, asection *), | |
6847 | void (*layout_sections_again) (void)) | |
721956f4 AM |
6848 | { |
6849 | bfd_size_type stub_group_size; | |
b34976b6 | 6850 | bfd_boolean stubs_always_before_branch; |
721956f4 AM |
6851 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
6852 | ||
6853 | /* Stash our params away. */ | |
721956f4 AM |
6854 | htab->add_stub_section = add_stub_section; |
6855 | htab->layout_sections_again = layout_sections_again; | |
6856 | stubs_always_before_branch = group_size < 0; | |
6857 | if (group_size < 0) | |
6858 | stub_group_size = -group_size; | |
6859 | else | |
6860 | stub_group_size = group_size; | |
6861 | if (stub_group_size == 1) | |
6862 | { | |
6863 | /* Default values. */ | |
58ac9f71 AM |
6864 | if (stubs_always_before_branch) |
6865 | { | |
6866 | stub_group_size = 0x1e00000; | |
6867 | if (htab->has_14bit_branch) | |
6868 | stub_group_size = 0x7800; | |
6869 | } | |
6870 | else | |
6871 | { | |
6872 | stub_group_size = 0x1c00000; | |
6873 | if (htab->has_14bit_branch) | |
6874 | stub_group_size = 0x7000; | |
6875 | } | |
721956f4 AM |
6876 | } |
6877 | ||
6878 | group_sections (htab, stub_group_size, stubs_always_before_branch); | |
6879 | ||
721956f4 AM |
6880 | while (1) |
6881 | { | |
6882 | bfd *input_bfd; | |
6883 | unsigned int bfd_indx; | |
6884 | asection *stub_sec; | |
b34976b6 | 6885 | bfd_boolean stub_changed; |
721956f4 AM |
6886 | |
6887 | htab->stub_iteration += 1; | |
b34976b6 | 6888 | stub_changed = FALSE; |
721956f4 AM |
6889 | |
6890 | for (input_bfd = info->input_bfds, bfd_indx = 0; | |
6891 | input_bfd != NULL; | |
6892 | input_bfd = input_bfd->link_next, bfd_indx++) | |
6893 | { | |
6894 | Elf_Internal_Shdr *symtab_hdr; | |
6895 | asection *section; | |
6cdc0ccc | 6896 | Elf_Internal_Sym *local_syms = NULL; |
721956f4 AM |
6897 | |
6898 | /* We'll need the symbol table in a second. */ | |
6899 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
6900 | if (symtab_hdr->sh_info == 0) | |
6901 | continue; | |
6902 | ||
721956f4 AM |
6903 | /* Walk over each section attached to the input bfd. */ |
6904 | for (section = input_bfd->sections; | |
6905 | section != NULL; | |
6906 | section = section->next) | |
6907 | { | |
721956f4 | 6908 | Elf_Internal_Rela *internal_relocs, *irelaend, *irela; |
721956f4 AM |
6909 | |
6910 | /* If there aren't any relocs, then there's nothing more | |
6911 | to do. */ | |
6912 | if ((section->flags & SEC_RELOC) == 0 | |
6913 | || section->reloc_count == 0) | |
6914 | continue; | |
6915 | ||
6916 | /* If this section is a link-once section that will be | |
6917 | discarded, then don't create any stubs. */ | |
6918 | if (section->output_section == NULL | |
6919 | || section->output_section->owner != output_bfd) | |
6920 | continue; | |
6921 | ||
1e2f5b6e AM |
6922 | /* Get the relocs. */ |
6923 | internal_relocs | |
4ce794b7 | 6924 | = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL, |
45d6a902 | 6925 | info->keep_memory); |
721956f4 | 6926 | if (internal_relocs == NULL) |
1e2f5b6e | 6927 | goto error_ret_free_local; |
721956f4 AM |
6928 | |
6929 | /* Now examine each relocation. */ | |
6930 | irela = internal_relocs; | |
6931 | irelaend = irela + section->reloc_count; | |
6932 | for (; irela < irelaend; irela++) | |
6933 | { | |
4ce794b7 AM |
6934 | enum elf_ppc64_reloc_type r_type; |
6935 | unsigned int r_indx; | |
721956f4 AM |
6936 | enum ppc_stub_type stub_type; |
6937 | struct ppc_stub_hash_entry *stub_entry; | |
6938 | asection *sym_sec; | |
6939 | bfd_vma sym_value; | |
6940 | bfd_vma destination; | |
6941 | struct ppc_link_hash_entry *hash; | |
411e1bfb AM |
6942 | struct elf_link_hash_entry *h; |
6943 | Elf_Internal_Sym *sym; | |
721956f4 AM |
6944 | char *stub_name; |
6945 | const asection *id_sec; | |
6946 | ||
6947 | r_type = ELF64_R_TYPE (irela->r_info); | |
6948 | r_indx = ELF64_R_SYM (irela->r_info); | |
6949 | ||
4ce794b7 | 6950 | if (r_type >= R_PPC64_max) |
721956f4 AM |
6951 | { |
6952 | bfd_set_error (bfd_error_bad_value); | |
6cdc0ccc | 6953 | goto error_ret_free_internal; |
721956f4 AM |
6954 | } |
6955 | ||
6956 | /* Only look for stubs on branch instructions. */ | |
4ce794b7 AM |
6957 | if (r_type != R_PPC64_REL24 |
6958 | && r_type != R_PPC64_REL14 | |
6959 | && r_type != R_PPC64_REL14_BRTAKEN | |
6960 | && r_type != R_PPC64_REL14_BRNTAKEN) | |
721956f4 AM |
6961 | continue; |
6962 | ||
6963 | /* Now determine the call target, its name, value, | |
6964 | section. */ | |
721956f4 | 6965 | destination = 0; |
411e1bfb AM |
6966 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, |
6967 | r_indx, input_bfd)) | |
6968 | goto error_ret_free_internal; | |
6969 | hash = (struct ppc_link_hash_entry *) h; | |
6970 | ||
6971 | if (hash == NULL) | |
721956f4 AM |
6972 | { |
6973 | /* It's a local symbol. */ | |
411e1bfb | 6974 | sym_value = sym->st_value; |
721956f4 AM |
6975 | destination = (sym_value + irela->r_addend |
6976 | + sym_sec->output_offset | |
6977 | + sym_sec->output_section->vma); | |
6978 | } | |
6979 | else | |
6980 | { | |
6981 | /* It's an external symbol. */ | |
411e1bfb | 6982 | sym_value = 0; |
721956f4 AM |
6983 | if (hash->elf.root.type == bfd_link_hash_defined |
6984 | || hash->elf.root.type == bfd_link_hash_defweak) | |
6985 | { | |
721956f4 AM |
6986 | sym_value = hash->elf.root.u.def.value; |
6987 | if (sym_sec->output_section != NULL) | |
6988 | destination = (sym_value + irela->r_addend | |
6989 | + sym_sec->output_offset | |
6990 | + sym_sec->output_section->vma); | |
6991 | } | |
6992 | else if (hash->elf.root.type == bfd_link_hash_undefweak) | |
6993 | ; | |
6994 | else if (hash->elf.root.type == bfd_link_hash_undefined) | |
6995 | ; | |
6996 | else | |
6997 | { | |
6998 | bfd_set_error (bfd_error_bad_value); | |
6999 | goto error_ret_free_internal; | |
7000 | } | |
7001 | } | |
7002 | ||
7003 | /* Determine what (if any) linker stub is needed. */ | |
7004 | stub_type = ppc_type_of_stub (section, irela, &hash, | |
7005 | destination); | |
ad8e1ba5 AM |
7006 | |
7007 | if (stub_type != ppc_stub_plt_call) | |
7008 | { | |
7009 | /* Check whether we need a TOC adjusting stub. | |
7010 | Since the linker pastes together pieces from | |
7011 | different object files when creating the | |
7012 | _init and _fini functions, it may be that a | |
7013 | call to what looks like a local sym is in | |
7014 | fact a call needing a TOC adjustment. */ | |
7015 | if (sym_sec != NULL | |
7016 | && sym_sec->output_section != NULL | |
7017 | && (htab->stub_group[sym_sec->id].toc_off | |
9b5ecbd0 AM |
7018 | != htab->stub_group[section->id].toc_off) |
7019 | && sym_sec->has_gp_reloc | |
7020 | && section->has_gp_reloc) | |
ad8e1ba5 AM |
7021 | stub_type = ppc_stub_long_branch_r2off; |
7022 | } | |
7023 | ||
721956f4 AM |
7024 | if (stub_type == ppc_stub_none) |
7025 | continue; | |
7026 | ||
411e1bfb AM |
7027 | /* __tls_get_addr calls might be eliminated. */ |
7028 | if (stub_type != ppc_stub_plt_call | |
7029 | && hash != NULL | |
7030 | && &hash->elf == htab->tls_get_addr | |
7031 | && section->has_tls_reloc | |
7032 | && irela != internal_relocs) | |
7033 | { | |
7034 | /* Get tls info. */ | |
e7b938ca | 7035 | char *tls_mask; |
411e1bfb | 7036 | |
0d4792f7 | 7037 | if (!get_tls_mask (&tls_mask, NULL, &local_syms, |
411e1bfb AM |
7038 | irela - 1, input_bfd)) |
7039 | goto error_ret_free_internal; | |
e7b938ca | 7040 | if (*tls_mask != 0) |
411e1bfb AM |
7041 | continue; |
7042 | } | |
7043 | ||
721956f4 AM |
7044 | /* Support for grouping stub sections. */ |
7045 | id_sec = htab->stub_group[section->id].link_sec; | |
7046 | ||
7047 | /* Get the name of this stub. */ | |
7048 | stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela); | |
7049 | if (!stub_name) | |
7050 | goto error_ret_free_internal; | |
7051 | ||
7052 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, | |
b34976b6 | 7053 | stub_name, FALSE, FALSE); |
721956f4 AM |
7054 | if (stub_entry != NULL) |
7055 | { | |
7056 | /* The proper stub has already been created. */ | |
7057 | free (stub_name); | |
7058 | continue; | |
7059 | } | |
7060 | ||
7061 | stub_entry = ppc_add_stub (stub_name, section, htab); | |
7062 | if (stub_entry == NULL) | |
7063 | { | |
7064 | free (stub_name); | |
6cdc0ccc AM |
7065 | error_ret_free_internal: |
7066 | if (elf_section_data (section)->relocs == NULL) | |
7067 | free (internal_relocs); | |
7068 | error_ret_free_local: | |
7069 | if (local_syms != NULL | |
7070 | && (symtab_hdr->contents | |
7071 | != (unsigned char *) local_syms)) | |
7072 | free (local_syms); | |
b34976b6 | 7073 | return FALSE; |
721956f4 AM |
7074 | } |
7075 | ||
ad8e1ba5 | 7076 | stub_entry->stub_type = stub_type; |
721956f4 AM |
7077 | stub_entry->target_value = sym_value; |
7078 | stub_entry->target_section = sym_sec; | |
721956f4 | 7079 | stub_entry->h = hash; |
411e1bfb | 7080 | stub_entry->addend = irela->r_addend; |
b34976b6 | 7081 | stub_changed = TRUE; |
721956f4 AM |
7082 | } |
7083 | ||
7084 | /* We're done with the internal relocs, free them. */ | |
6cdc0ccc | 7085 | if (elf_section_data (section)->relocs != internal_relocs) |
1e2f5b6e | 7086 | free (internal_relocs); |
721956f4 | 7087 | } |
6cdc0ccc AM |
7088 | |
7089 | if (local_syms != NULL | |
7090 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
7091 | { | |
7092 | if (!info->keep_memory) | |
7093 | free (local_syms); | |
7094 | else | |
7095 | symtab_hdr->contents = (unsigned char *) local_syms; | |
7096 | } | |
721956f4 AM |
7097 | } |
7098 | ||
7099 | if (!stub_changed) | |
7100 | break; | |
7101 | ||
7102 | /* OK, we've added some stubs. Find out the new size of the | |
7103 | stub sections. */ | |
7104 | for (stub_sec = htab->stub_bfd->sections; | |
7105 | stub_sec != NULL; | |
7106 | stub_sec = stub_sec->next) | |
e717da7e | 7107 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) |
eea6121a AM |
7108 | stub_sec->size = 0; |
7109 | ||
7110 | htab->brlt->size = 0; | |
63bc6f6c | 7111 | if (info->shared) |
eea6121a | 7112 | htab->relbrlt->size = 0; |
721956f4 | 7113 | |
63bc6f6c | 7114 | bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, info); |
721956f4 AM |
7115 | |
7116 | /* Ask the linker to do its stuff. */ | |
7117 | (*htab->layout_sections_again) (); | |
7118 | } | |
7119 | ||
afbe61cf AM |
7120 | /* It would be nice to strip .branch_lt from the output if the |
7121 | section is empty, but it's too late. If we strip sections here, | |
7122 | the dynamic symbol table is corrupted since the section symbol | |
7123 | for the stripped section isn't written. */ | |
721956f4 | 7124 | |
b34976b6 | 7125 | return TRUE; |
721956f4 AM |
7126 | } |
7127 | ||
7128 | /* Called after we have determined section placement. If sections | |
805fc799 | 7129 | move, we'll be called again. Provide a value for TOCstart. */ |
721956f4 | 7130 | |
805fc799 | 7131 | bfd_vma |
4ce794b7 | 7132 | ppc64_elf_toc (bfd *obfd) |
721956f4 | 7133 | { |
805fc799 AM |
7134 | asection *s; |
7135 | bfd_vma TOCstart; | |
721956f4 | 7136 | |
805fc799 AM |
7137 | /* The TOC consists of sections .got, .toc, .tocbss, .plt in that |
7138 | order. The TOC starts where the first of these sections starts. */ | |
7139 | s = bfd_get_section_by_name (obfd, ".got"); | |
7140 | if (s == NULL) | |
7141 | s = bfd_get_section_by_name (obfd, ".toc"); | |
7142 | if (s == NULL) | |
7143 | s = bfd_get_section_by_name (obfd, ".tocbss"); | |
7144 | if (s == NULL) | |
7145 | s = bfd_get_section_by_name (obfd, ".plt"); | |
7146 | if (s == NULL) | |
7147 | { | |
7148 | /* This may happen for | |
7149 | o references to TOC base (SYM@toc / TOC[tc0]) without a | |
7150 | .toc directive | |
7151 | o bad linker script | |
7152 | o --gc-sections and empty TOC sections | |
7153 | ||
7154 | FIXME: Warn user? */ | |
7155 | ||
7156 | /* Look for a likely section. We probably won't even be | |
7157 | using TOCstart. */ | |
7158 | for (s = obfd->sections; s != NULL; s = s->next) | |
7159 | if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY)) | |
7160 | == (SEC_ALLOC | SEC_SMALL_DATA)) | |
7161 | break; | |
721956f4 | 7162 | if (s == NULL) |
805fc799 AM |
7163 | for (s = obfd->sections; s != NULL; s = s->next) |
7164 | if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA)) | |
7165 | == (SEC_ALLOC | SEC_SMALL_DATA)) | |
7166 | break; | |
721956f4 | 7167 | if (s == NULL) |
805fc799 AM |
7168 | for (s = obfd->sections; s != NULL; s = s->next) |
7169 | if ((s->flags & (SEC_ALLOC | SEC_READONLY)) == SEC_ALLOC) | |
7170 | break; | |
721956f4 | 7171 | if (s == NULL) |
805fc799 AM |
7172 | for (s = obfd->sections; s != NULL; s = s->next) |
7173 | if ((s->flags & SEC_ALLOC) == SEC_ALLOC) | |
7174 | break; | |
7175 | } | |
721956f4 | 7176 | |
805fc799 AM |
7177 | TOCstart = 0; |
7178 | if (s != NULL) | |
7179 | TOCstart = s->output_section->vma + s->output_offset; | |
721956f4 | 7180 | |
805fc799 | 7181 | return TOCstart; |
721956f4 AM |
7182 | } |
7183 | ||
7184 | /* Build all the stubs associated with the current output file. | |
7185 | The stubs are kept in a hash table attached to the main linker | |
7186 | hash table. This function is called via gldelf64ppc_finish. */ | |
7187 | ||
b34976b6 | 7188 | bfd_boolean |
4ce794b7 AM |
7189 | ppc64_elf_build_stubs (bfd_boolean emit_stub_syms, |
7190 | struct bfd_link_info *info, | |
7191 | char **stats) | |
5d1634d7 AM |
7192 | { |
7193 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
721956f4 | 7194 | asection *stub_sec; |
5d1634d7 | 7195 | bfd_byte *p; |
e717da7e | 7196 | int stub_sec_count = 0; |
5d1634d7 | 7197 | |
ad8e1ba5 | 7198 | htab->emit_stub_syms = emit_stub_syms; |
eea6121a AM |
7199 | |
7200 | /* Allocate memory to hold the linker stubs. */ | |
721956f4 AM |
7201 | for (stub_sec = htab->stub_bfd->sections; |
7202 | stub_sec != NULL; | |
7203 | stub_sec = stub_sec->next) | |
eea6121a AM |
7204 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0 |
7205 | && stub_sec->size != 0) | |
e717da7e | 7206 | { |
eea6121a AM |
7207 | stub_sec->contents = bfd_zalloc (htab->stub_bfd, stub_sec->size); |
7208 | if (stub_sec->contents == NULL) | |
7209 | return FALSE; | |
7210 | /* We want to check that built size is the same as calculated | |
7211 | size. rawsize is a convenient location to use. */ | |
7212 | stub_sec->rawsize = stub_sec->size; | |
7213 | stub_sec->size = 0; | |
e717da7e | 7214 | } |
5d1634d7 | 7215 | |
4ce794b7 | 7216 | if (htab->plt != NULL) |
5d1634d7 | 7217 | { |
9f951329 | 7218 | unsigned int indx; |
ad8e1ba5 | 7219 | bfd_vma plt0; |
9f951329 | 7220 | |
721956f4 | 7221 | /* Build the .glink plt call stub. */ |
4ce794b7 AM |
7222 | plt0 = (htab->plt->output_section->vma |
7223 | + htab->plt->output_offset | |
7224 | - (htab->glink->output_section->vma | |
7225 | + htab->glink->output_offset | |
ad8e1ba5 AM |
7226 | + GLINK_CALL_STUB_SIZE)); |
7227 | if (plt0 + 0x80008000 > 0xffffffff) | |
721956f4 | 7228 | { |
ad8e1ba5 AM |
7229 | (*_bfd_error_handler) (_(".glink and .plt too far apart")); |
7230 | bfd_set_error (bfd_error_bad_value); | |
7231 | return FALSE; | |
721956f4 | 7232 | } |
721956f4 | 7233 | |
97b639ba AM |
7234 | if (htab->emit_stub_syms) |
7235 | { | |
7236 | struct elf_link_hash_entry *h; | |
7237 | h = elf_link_hash_lookup (&htab->elf, "__glink", TRUE, FALSE, FALSE); | |
7238 | if (h == NULL) | |
7239 | return FALSE; | |
7240 | if (h->root.type == bfd_link_hash_new) | |
7241 | { | |
7242 | h->root.type = bfd_link_hash_defined; | |
7243 | h->root.u.def.section = htab->glink; | |
7244 | h->root.u.def.value = 0; | |
7245 | h->elf_link_hash_flags = (ELF_LINK_HASH_REF_REGULAR | |
7246 | | ELF_LINK_HASH_DEF_REGULAR | |
7247 | | ELF_LINK_HASH_REF_REGULAR_NONWEAK | |
7248 | | ELF_LINK_FORCED_LOCAL); | |
7249 | } | |
7250 | } | |
4ce794b7 AM |
7251 | p = htab->glink->contents; |
7252 | bfd_put_32 (htab->glink->owner, MFCTR_R12, p); | |
ad8e1ba5 | 7253 | p += 4; |
4ce794b7 | 7254 | bfd_put_32 (htab->glink->owner, SLDI_R11_R0_3, p); |
ad8e1ba5 | 7255 | p += 4; |
4ce794b7 | 7256 | bfd_put_32 (htab->glink->owner, ADDIC_R2_R0_32K, p); |
ad8e1ba5 | 7257 | p += 4; |
4ce794b7 | 7258 | bfd_put_32 (htab->glink->owner, SUB_R12_R12_R11, p); |
ad8e1ba5 | 7259 | p += 4; |
4ce794b7 | 7260 | bfd_put_32 (htab->glink->owner, SRADI_R2_R2_63, p); |
ad8e1ba5 | 7261 | p += 4; |
4ce794b7 | 7262 | bfd_put_32 (htab->glink->owner, SLDI_R11_R0_2, p); |
ad8e1ba5 | 7263 | p += 4; |
4ce794b7 | 7264 | bfd_put_32 (htab->glink->owner, AND_R2_R2_R11, p); |
ad8e1ba5 | 7265 | p += 4; |
4ce794b7 | 7266 | bfd_put_32 (htab->glink->owner, SUB_R12_R12_R11, p); |
ad8e1ba5 | 7267 | p += 4; |
4ce794b7 | 7268 | bfd_put_32 (htab->glink->owner, ADD_R12_R12_R2, p); |
ad8e1ba5 | 7269 | p += 4; |
4ce794b7 | 7270 | bfd_put_32 (htab->glink->owner, ADDIS_R12_R12 | PPC_HA (plt0), p); |
ad8e1ba5 | 7271 | p += 4; |
4ce794b7 | 7272 | bfd_put_32 (htab->glink->owner, LD_R11_0R12 | PPC_LO (plt0), p); |
ad8e1ba5 | 7273 | p += 4; |
4ce794b7 | 7274 | bfd_put_32 (htab->glink->owner, ADDI_R12_R12 | PPC_LO (plt0), p); |
ad8e1ba5 | 7275 | p += 4; |
4ce794b7 | 7276 | bfd_put_32 (htab->glink->owner, LD_R2_0R12 | 8, p); |
ad8e1ba5 | 7277 | p += 4; |
4ce794b7 | 7278 | bfd_put_32 (htab->glink->owner, MTCTR_R11, p); |
ad8e1ba5 | 7279 | p += 4; |
4ce794b7 | 7280 | bfd_put_32 (htab->glink->owner, LD_R11_0R12 | 16, p); |
ad8e1ba5 | 7281 | p += 4; |
4ce794b7 | 7282 | bfd_put_32 (htab->glink->owner, BCTR, p); |
ad8e1ba5 AM |
7283 | p += 4; |
7284 | ||
9f951329 AM |
7285 | /* Build the .glink lazy link call stubs. */ |
7286 | indx = 0; | |
eea6121a | 7287 | while (p < htab->glink->contents + htab->glink->size) |
9f951329 AM |
7288 | { |
7289 | if (indx < 0x8000) | |
7290 | { | |
4ce794b7 | 7291 | bfd_put_32 (htab->glink->owner, LI_R0_0 | indx, p); |
9f951329 AM |
7292 | p += 4; |
7293 | } | |
7294 | else | |
7295 | { | |
4ce794b7 | 7296 | bfd_put_32 (htab->glink->owner, LIS_R0_0 | PPC_HI (indx), p); |
9f951329 | 7297 | p += 4; |
4ce794b7 | 7298 | bfd_put_32 (htab->glink->owner, ORI_R0_R0_0 | PPC_LO (indx), p); |
9f951329 AM |
7299 | p += 4; |
7300 | } | |
4ce794b7 AM |
7301 | bfd_put_32 (htab->glink->owner, |
7302 | B_DOT | ((htab->glink->contents - p) & 0x3fffffc), p); | |
a16d5acb | 7303 | indx++; |
9f951329 AM |
7304 | p += 4; |
7305 | } | |
eea6121a | 7306 | htab->glink->rawsize = p - htab->glink->contents; |
5d1634d7 | 7307 | } |
5d1634d7 | 7308 | |
eea6121a | 7309 | if (htab->brlt->size != 0) |
721956f4 | 7310 | { |
4ce794b7 | 7311 | htab->brlt->contents = bfd_zalloc (htab->brlt->owner, |
eea6121a | 7312 | htab->brlt->size); |
4ce794b7 | 7313 | if (htab->brlt->contents == NULL) |
b34976b6 | 7314 | return FALSE; |
721956f4 | 7315 | } |
eea6121a | 7316 | if (info->shared && htab->relbrlt->size != 0) |
63bc6f6c AM |
7317 | { |
7318 | htab->relbrlt->contents = bfd_zalloc (htab->relbrlt->owner, | |
eea6121a | 7319 | htab->relbrlt->size); |
63bc6f6c AM |
7320 | if (htab->relbrlt->contents == NULL) |
7321 | return FALSE; | |
7322 | } | |
5d1634d7 | 7323 | |
721956f4 AM |
7324 | /* Build the stubs as directed by the stub hash table. */ |
7325 | bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info); | |
5d1634d7 | 7326 | |
721956f4 AM |
7327 | for (stub_sec = htab->stub_bfd->sections; |
7328 | stub_sec != NULL; | |
7329 | stub_sec = stub_sec->next) | |
e717da7e AM |
7330 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) |
7331 | { | |
7332 | stub_sec_count += 1; | |
eea6121a | 7333 | if (stub_sec->rawsize != stub_sec->size) |
e717da7e AM |
7334 | break; |
7335 | } | |
5d1634d7 | 7336 | |
721956f4 | 7337 | if (stub_sec != NULL |
eea6121a | 7338 | || htab->glink->rawsize != htab->glink->size) |
5d1634d7 | 7339 | { |
b34976b6 | 7340 | htab->stub_error = TRUE; |
721956f4 | 7341 | (*_bfd_error_handler) (_("stubs don't match calculated size")); |
5d1634d7 | 7342 | } |
721956f4 | 7343 | |
d2a300cf AM |
7344 | if (htab->stub_error) |
7345 | return FALSE; | |
7346 | ||
7347 | if (stats != NULL) | |
7348 | { | |
7349 | *stats = bfd_malloc (500); | |
7350 | if (*stats == NULL) | |
7351 | return FALSE; | |
7352 | ||
7353 | sprintf (*stats, _("linker stubs in %u groups\n" | |
7354 | " branch %lu\n" | |
7355 | " toc adjust %lu\n" | |
7356 | " long branch %lu\n" | |
7357 | " long toc adj %lu\n" | |
7358 | " plt call %lu"), | |
e717da7e | 7359 | stub_sec_count, |
4ce794b7 AM |
7360 | htab->stub_count[ppc_stub_long_branch - 1], |
7361 | htab->stub_count[ppc_stub_long_branch_r2off - 1], | |
7362 | htab->stub_count[ppc_stub_plt_branch - 1], | |
7363 | htab->stub_count[ppc_stub_plt_branch_r2off - 1], | |
7364 | htab->stub_count[ppc_stub_plt_call - 1]); | |
d2a300cf AM |
7365 | } |
7366 | return TRUE; | |
5bd4f169 AM |
7367 | } |
7368 | ||
5bd4f169 AM |
7369 | /* The RELOCATE_SECTION function is called by the ELF backend linker |
7370 | to handle the relocations for a section. | |
7371 | ||
7372 | The relocs are always passed as Rela structures; if the section | |
7373 | actually uses Rel structures, the r_addend field will always be | |
7374 | zero. | |
7375 | ||
7376 | This function is responsible for adjust the section contents as | |
7377 | necessary, and (if using Rela relocs and generating a | |
1049f94e | 7378 | relocatable output file) adjusting the reloc addend as |
5bd4f169 AM |
7379 | necessary. |
7380 | ||
7381 | This function does not have to worry about setting the reloc | |
7382 | address or the reloc symbol index. | |
7383 | ||
7384 | LOCAL_SYMS is a pointer to the swapped in local symbols. | |
7385 | ||
7386 | LOCAL_SECTIONS is an array giving the section in the input file | |
7387 | corresponding to the st_shndx field of each local symbol. | |
7388 | ||
7389 | The global hash table entry for the global symbols can be found | |
7390 | via elf_sym_hashes (input_bfd). | |
7391 | ||
1049f94e | 7392 | When generating relocatable output, this function must handle |
5bd4f169 AM |
7393 | STB_LOCAL/STT_SECTION symbols specially. The output symbol is |
7394 | going to be the section symbol corresponding to the output | |
7395 | section, which means that the addend must be adjusted | |
7396 | accordingly. */ | |
7397 | ||
b34976b6 | 7398 | static bfd_boolean |
4ce794b7 AM |
7399 | ppc64_elf_relocate_section (bfd *output_bfd, |
7400 | struct bfd_link_info *info, | |
7401 | bfd *input_bfd, | |
7402 | asection *input_section, | |
7403 | bfd_byte *contents, | |
7404 | Elf_Internal_Rela *relocs, | |
7405 | Elf_Internal_Sym *local_syms, | |
7406 | asection **local_sections) | |
5bd4f169 | 7407 | { |
65f38f15 | 7408 | struct ppc_link_hash_table *htab; |
5bd4f169 AM |
7409 | Elf_Internal_Shdr *symtab_hdr; |
7410 | struct elf_link_hash_entry **sym_hashes; | |
5bd4f169 AM |
7411 | Elf_Internal_Rela *rel; |
7412 | Elf_Internal_Rela *relend; | |
411e1bfb AM |
7413 | Elf_Internal_Rela outrel; |
7414 | bfd_byte *loc; | |
411e1bfb | 7415 | struct got_entry **local_got_ents; |
5bd4f169 | 7416 | bfd_vma TOCstart; |
b34976b6 AM |
7417 | bfd_boolean ret = TRUE; |
7418 | bfd_boolean is_opd; | |
96e0dda4 | 7419 | /* Disabled until we sort out how ld should choose 'y' vs 'at'. */ |
b34976b6 | 7420 | bfd_boolean is_power4 = FALSE; |
5bd4f169 | 7421 | |
1049f94e | 7422 | if (info->relocatable) |
b34976b6 | 7423 | return TRUE; |
b491616a | 7424 | |
65f38f15 | 7425 | /* Initialize howto table if needed. */ |
5bd4f169 | 7426 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) |
5bd4f169 AM |
7427 | ppc_howto_init (); |
7428 | ||
65f38f15 | 7429 | htab = ppc_hash_table (info); |
411e1bfb | 7430 | local_got_ents = elf_local_got_ents (input_bfd); |
5bd4f169 | 7431 | TOCstart = elf_gp (output_bfd); |
5bd4f169 AM |
7432 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; |
7433 | sym_hashes = elf_sym_hashes (input_bfd); | |
f0abc2a1 | 7434 | is_opd = ppc64_elf_section_data (input_section)->opd.adjust != NULL; |
65f38f15 | 7435 | |
5bd4f169 AM |
7436 | rel = relocs; |
7437 | relend = relocs + input_section->reloc_count; | |
7438 | for (; rel < relend; rel++) | |
7439 | { | |
04c9666a | 7440 | enum elf_ppc64_reloc_type r_type; |
5bd4f169 AM |
7441 | bfd_vma addend; |
7442 | bfd_reloc_status_type r; | |
7443 | Elf_Internal_Sym *sym; | |
7444 | asection *sec; | |
7445 | struct elf_link_hash_entry *h; | |
721956f4 | 7446 | struct elf_link_hash_entry *fdh; |
5bd4f169 | 7447 | const char *sym_name; |
0d4792f7 | 7448 | unsigned long r_symndx, toc_symndx; |
951fd09b | 7449 | char tls_mask, tls_gd, tls_type; |
0d4792f7 | 7450 | char sym_type; |
5bd4f169 | 7451 | bfd_vma relocation; |
b34976b6 AM |
7452 | bfd_boolean unresolved_reloc; |
7453 | bfd_boolean warned; | |
50bc7936 | 7454 | unsigned long insn, mask; |
721956f4 AM |
7455 | struct ppc_stub_hash_entry *stub_entry; |
7456 | bfd_vma max_br_offset; | |
7457 | bfd_vma from; | |
5bd4f169 | 7458 | |
4ce794b7 | 7459 | r_type = ELF64_R_TYPE (rel->r_info); |
5bd4f169 | 7460 | r_symndx = ELF64_R_SYM (rel->r_info); |
ee87f2da AM |
7461 | |
7462 | /* For old style R_PPC64_TOC relocs with a zero symbol, use the | |
7463 | symbol of the previous ADDR64 reloc. The symbol gives us the | |
7464 | proper TOC base to use. */ | |
7465 | if (rel->r_info == ELF64_R_INFO (0, R_PPC64_TOC) | |
7466 | && rel != relocs | |
7467 | && ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_ADDR64 | |
7468 | && is_opd) | |
7469 | r_symndx = ELF64_R_SYM (rel[-1].r_info); | |
7470 | ||
4ce794b7 AM |
7471 | sym = NULL; |
7472 | sec = NULL; | |
7473 | h = NULL; | |
7474 | sym_name = NULL; | |
b34976b6 AM |
7475 | unresolved_reloc = FALSE; |
7476 | warned = FALSE; | |
65f38f15 | 7477 | |
0b13192e | 7478 | if (r_symndx < symtab_hdr->sh_info) |
5bd4f169 AM |
7479 | { |
7480 | /* It's a local symbol. */ | |
4025353c AM |
7481 | long *opd_adjust; |
7482 | ||
5bd4f169 AM |
7483 | sym = local_syms + r_symndx; |
7484 | sec = local_sections[r_symndx]; | |
411e1bfb | 7485 | sym_name = bfd_elf_local_sym_name (input_bfd, sym); |
0d4792f7 | 7486 | sym_type = ELF64_ST_TYPE (sym->st_info); |
8517fae7 | 7487 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); |
4025353c AM |
7488 | opd_adjust = get_opd_info (sec); |
7489 | if (opd_adjust != NULL) | |
1e2f5b6e | 7490 | { |
4025353c AM |
7491 | long adjust = opd_adjust[(sym->st_value + rel->r_addend) / 24]; |
7492 | if (adjust == -1) | |
7493 | relocation = 0; | |
7494 | else | |
7495 | relocation += adjust; | |
1e2f5b6e | 7496 | } |
5bd4f169 AM |
7497 | } |
7498 | else | |
7499 | { | |
b2a8e766 AM |
7500 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
7501 | r_symndx, symtab_hdr, sym_hashes, | |
7502 | h, sec, relocation, | |
7503 | unresolved_reloc, warned); | |
5bd4f169 | 7504 | sym_name = h->root.root.string; |
0d4792f7 | 7505 | sym_type = h->type; |
5bd4f169 AM |
7506 | } |
7507 | ||
951fd09b AM |
7508 | /* TLS optimizations. Replace instruction sequences and relocs |
7509 | based on information we collected in tls_optimize. We edit | |
7510 | RELOCS so that --emit-relocs will output something sensible | |
7511 | for the final instruction stream. */ | |
7512 | tls_mask = 0; | |
7513 | tls_gd = 0; | |
0d4792f7 | 7514 | toc_symndx = 0; |
d881513a | 7515 | if (IS_PPC64_TLS_RELOC (r_type)) |
411e1bfb AM |
7516 | { |
7517 | if (h != NULL) | |
e7b938ca | 7518 | tls_mask = ((struct ppc_link_hash_entry *) h)->tls_mask; |
411e1bfb AM |
7519 | else if (local_got_ents != NULL) |
7520 | { | |
e7b938ca AM |
7521 | char *lgot_masks; |
7522 | lgot_masks = (char *) (local_got_ents + symtab_hdr->sh_info); | |
7523 | tls_mask = lgot_masks[r_symndx]; | |
411e1bfb | 7524 | } |
0d4792f7 AM |
7525 | if (tls_mask == 0 && r_type == R_PPC64_TLS) |
7526 | { | |
7527 | /* Check for toc tls entries. */ | |
7528 | char *toc_tls; | |
7529 | ||
7530 | if (!get_tls_mask (&toc_tls, &toc_symndx, &local_syms, | |
7531 | rel, input_bfd)) | |
7532 | return FALSE; | |
7533 | ||
7534 | if (toc_tls) | |
7535 | tls_mask = *toc_tls; | |
7536 | } | |
7537 | } | |
7538 | ||
7539 | /* Check that tls relocs are used with tls syms, and non-tls | |
7540 | relocs are used with non-tls syms. */ | |
7541 | if (r_symndx != 0 | |
7542 | && r_type != R_PPC64_NONE | |
7543 | && (h == NULL | |
7544 | || h->root.type == bfd_link_hash_defined | |
7545 | || h->root.type == bfd_link_hash_defweak) | |
7546 | && IS_PPC64_TLS_RELOC (r_type) != (sym_type == STT_TLS)) | |
7547 | { | |
7548 | if (r_type == R_PPC64_TLS && tls_mask != 0) | |
7549 | /* R_PPC64_TLS is OK against a symbol in the TOC. */ | |
7550 | ; | |
7551 | else | |
7552 | (*_bfd_error_handler) | |
7553 | (sym_type == STT_TLS | |
7554 | ? _("%s(%s+0x%lx): %s used with TLS symbol %s") | |
7555 | : _("%s(%s+0x%lx): %s used with non-TLS symbol %s"), | |
7556 | bfd_archive_filename (input_bfd), | |
7557 | input_section->name, | |
7558 | (long) rel->r_offset, | |
7559 | ppc64_elf_howto_table[r_type]->name, | |
7560 | sym_name); | |
411e1bfb AM |
7561 | } |
7562 | ||
7563 | /* Ensure reloc mapping code below stays sane. */ | |
7564 | if (R_PPC64_TOC16_LO_DS != R_PPC64_TOC16_DS + 1 | |
7565 | || R_PPC64_TOC16_LO != R_PPC64_TOC16 + 1 | |
7566 | || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TLSGD16 & 3) | |
7567 | || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TLSGD16_LO & 3) | |
7568 | || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TLSGD16_HI & 3) | |
7569 | || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TLSGD16_HA & 3) | |
7570 | || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TPREL16_DS & 3) | |
7571 | || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TPREL16_LO_DS & 3) | |
7572 | || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TPREL16_HI & 3) | |
7573 | || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TPREL16_HA & 3)) | |
7574 | abort (); | |
0d4792f7 | 7575 | |
411e1bfb AM |
7576 | switch (r_type) |
7577 | { | |
7578 | default: | |
411e1bfb AM |
7579 | break; |
7580 | ||
7581 | case R_PPC64_TOC16: | |
7582 | case R_PPC64_TOC16_LO: | |
7583 | case R_PPC64_TOC16_DS: | |
7584 | case R_PPC64_TOC16_LO_DS: | |
411e1bfb AM |
7585 | { |
7586 | /* Check for toc tls entries. */ | |
7587 | char *toc_tls; | |
951fd09b | 7588 | int retval; |
411e1bfb | 7589 | |
0d4792f7 AM |
7590 | retval = get_tls_mask (&toc_tls, &toc_symndx, &local_syms, |
7591 | rel, input_bfd); | |
951fd09b | 7592 | if (retval == 0) |
411e1bfb AM |
7593 | return FALSE; |
7594 | ||
7595 | if (toc_tls) | |
7596 | { | |
951fd09b | 7597 | tls_mask = *toc_tls; |
411e1bfb AM |
7598 | if (r_type == R_PPC64_TOC16_DS |
7599 | || r_type == R_PPC64_TOC16_LO_DS) | |
81407a69 AM |
7600 | { |
7601 | if (tls_mask != 0 | |
7602 | && (tls_mask & (TLS_DTPREL | TLS_TPREL)) == 0) | |
7603 | goto toctprel; | |
7604 | } | |
411e1bfb | 7605 | else |
951fd09b AM |
7606 | { |
7607 | /* If we found a GD reloc pair, then we might be | |
7608 | doing a GD->IE transition. */ | |
7609 | if (retval == 2) | |
7610 | { | |
7611 | tls_gd = TLS_TPRELGD; | |
7612 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
7613 | goto tls_get_addr_check; | |
7614 | } | |
7615 | else if (retval == 3) | |
7616 | { | |
7617 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) | |
7618 | goto tls_get_addr_check; | |
7619 | } | |
7620 | } | |
411e1bfb AM |
7621 | } |
7622 | } | |
7623 | break; | |
7624 | ||
7625 | case R_PPC64_GOT_TPREL16_DS: | |
7626 | case R_PPC64_GOT_TPREL16_LO_DS: | |
951fd09b AM |
7627 | if (tls_mask != 0 |
7628 | && (tls_mask & TLS_TPREL) == 0) | |
411e1bfb | 7629 | { |
81407a69 | 7630 | toctprel: |
411e1bfb AM |
7631 | insn = bfd_get_32 (output_bfd, contents + rel->r_offset - 2); |
7632 | insn &= 31 << 21; | |
7633 | insn |= 0x3c0d0000; /* addis 0,13,0 */ | |
7634 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset - 2); | |
7635 | r_type = R_PPC64_TPREL16_HA; | |
0d4792f7 AM |
7636 | if (toc_symndx != 0) |
7637 | { | |
7638 | rel->r_info = ELF64_R_INFO (toc_symndx, r_type); | |
7639 | /* We changed the symbol. Start over in order to | |
7640 | get h, sym, sec etc. right. */ | |
7641 | rel--; | |
7642 | continue; | |
7643 | } | |
7644 | else | |
7645 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
411e1bfb AM |
7646 | } |
7647 | break; | |
7648 | ||
7649 | case R_PPC64_TLS: | |
951fd09b AM |
7650 | if (tls_mask != 0 |
7651 | && (tls_mask & TLS_TPREL) == 0) | |
411e1bfb | 7652 | { |
50bc7936 | 7653 | bfd_vma rtra; |
411e1bfb | 7654 | insn = bfd_get_32 (output_bfd, contents + rel->r_offset); |
772119ce | 7655 | if ((insn & ((0x3f << 26) | (31 << 11))) |
411e1bfb AM |
7656 | == ((31 << 26) | (13 << 11))) |
7657 | rtra = insn & ((1 << 26) - (1 << 16)); | |
772119ce | 7658 | else if ((insn & ((0x3f << 26) | (31 << 16))) |
411e1bfb AM |
7659 | == ((31 << 26) | (13 << 16))) |
7660 | rtra = (insn & (31 << 21)) | ((insn & (31 << 11)) << 5); | |
7661 | else | |
7662 | abort (); | |
7663 | if ((insn & ((1 << 11) - (1 << 1))) == 266 << 1) | |
7664 | /* add -> addi. */ | |
7665 | insn = 14 << 26; | |
7666 | else if ((insn & (31 << 1)) == 23 << 1 | |
7667 | && ((insn & (31 << 6)) < 14 << 6 | |
7668 | || ((insn & (31 << 6)) >= 16 << 6 | |
7669 | && (insn & (31 << 6)) < 24 << 6))) | |
7670 | /* load and store indexed -> dform. */ | |
7671 | insn = (32 | ((insn >> 6) & 31)) << 26; | |
7672 | else if ((insn & (31 << 1)) == 21 << 1 | |
7673 | && (insn & (0x1a << 6)) == 0) | |
7674 | /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */ | |
7675 | insn = (((58 | ((insn >> 6) & 4)) << 26) | |
7676 | | ((insn >> 6) & 1)); | |
7677 | else if ((insn & (31 << 1)) == 21 << 1 | |
7678 | && (insn & ((1 << 11) - (1 << 1))) == 341 << 1) | |
7679 | /* lwax -> lwa. */ | |
7680 | insn = (58 << 26) | 2; | |
7681 | else | |
7682 | abort (); | |
7683 | insn |= rtra; | |
7684 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset); | |
411e1bfb AM |
7685 | /* Was PPC64_TLS which sits on insn boundary, now |
7686 | PPC64_TPREL16_LO which is at insn+2. */ | |
7687 | rel->r_offset += 2; | |
0d4792f7 AM |
7688 | r_type = R_PPC64_TPREL16_LO; |
7689 | if (toc_symndx != 0) | |
7690 | { | |
7691 | rel->r_info = ELF64_R_INFO (toc_symndx, r_type); | |
7692 | /* We changed the symbol. Start over in order to | |
7693 | get h, sym, sec etc. right. */ | |
7694 | rel--; | |
7695 | continue; | |
7696 | } | |
7697 | else | |
7698 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
411e1bfb AM |
7699 | } |
7700 | break; | |
7701 | ||
411e1bfb AM |
7702 | case R_PPC64_GOT_TLSGD16_HI: |
7703 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b AM |
7704 | tls_gd = TLS_TPRELGD; |
7705 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
7706 | goto tls_gdld_hi; | |
7707 | break; | |
7708 | ||
411e1bfb AM |
7709 | case R_PPC64_GOT_TLSLD16_HI: |
7710 | case R_PPC64_GOT_TLSLD16_HA: | |
951fd09b | 7711 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) |
411e1bfb | 7712 | { |
951fd09b AM |
7713 | tls_gdld_hi: |
7714 | if ((tls_mask & tls_gd) != 0) | |
7715 | r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3) | |
7716 | + R_PPC64_GOT_TPREL16_DS); | |
7717 | else | |
411e1bfb | 7718 | { |
951fd09b AM |
7719 | bfd_put_32 (output_bfd, NOP, contents + rel->r_offset); |
7720 | rel->r_offset -= 2; | |
7721 | r_type = R_PPC64_NONE; | |
411e1bfb | 7722 | } |
951fd09b | 7723 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); |
411e1bfb AM |
7724 | } |
7725 | break; | |
7726 | ||
951fd09b AM |
7727 | case R_PPC64_GOT_TLSGD16: |
7728 | case R_PPC64_GOT_TLSGD16_LO: | |
7729 | tls_gd = TLS_TPRELGD; | |
7730 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
7731 | goto tls_get_addr_check; | |
7732 | break; | |
411e1bfb | 7733 | |
951fd09b AM |
7734 | case R_PPC64_GOT_TLSLD16: |
7735 | case R_PPC64_GOT_TLSLD16_LO: | |
7736 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) | |
7737 | { | |
7738 | tls_get_addr_check: | |
7739 | if (rel + 1 < relend) | |
411e1bfb | 7740 | { |
951fd09b AM |
7741 | enum elf_ppc64_reloc_type r_type2; |
7742 | unsigned long r_symndx2; | |
7743 | struct elf_link_hash_entry *h2; | |
7744 | bfd_vma insn1, insn2, insn3; | |
7745 | bfd_vma offset; | |
7746 | ||
7747 | /* The next instruction should be a call to | |
7748 | __tls_get_addr. Peek at the reloc to be sure. */ | |
4ce794b7 | 7749 | r_type2 = ELF64_R_TYPE (rel[1].r_info); |
951fd09b AM |
7750 | r_symndx2 = ELF64_R_SYM (rel[1].r_info); |
7751 | if (r_symndx2 < symtab_hdr->sh_info | |
7752 | || (r_type2 != R_PPC64_REL14 | |
7753 | && r_type2 != R_PPC64_REL14_BRTAKEN | |
7754 | && r_type2 != R_PPC64_REL14_BRNTAKEN | |
7755 | && r_type2 != R_PPC64_REL24)) | |
7756 | break; | |
7757 | ||
7758 | h2 = sym_hashes[r_symndx2 - symtab_hdr->sh_info]; | |
7759 | while (h2->root.type == bfd_link_hash_indirect | |
7760 | || h2->root.type == bfd_link_hash_warning) | |
7761 | h2 = (struct elf_link_hash_entry *) h2->root.u.i.link; | |
7762 | if (h2 == NULL || h2 != htab->tls_get_addr) | |
7763 | break; | |
7764 | ||
7765 | /* OK, it checks out. Replace the call. */ | |
7766 | offset = rel[1].r_offset; | |
7767 | insn1 = bfd_get_32 (output_bfd, | |
7768 | contents + rel->r_offset - 2); | |
7769 | insn3 = bfd_get_32 (output_bfd, | |
7770 | contents + offset + 4); | |
7771 | if ((tls_mask & tls_gd) != 0) | |
411e1bfb | 7772 | { |
951fd09b AM |
7773 | /* IE */ |
7774 | insn1 &= (1 << 26) - (1 << 2); | |
7775 | insn1 |= 58 << 26; /* ld */ | |
7776 | insn2 = 0x7c636a14; /* add 3,3,13 */ | |
7777 | rel[1].r_info = ELF64_R_INFO (r_symndx2, R_PPC64_NONE); | |
7778 | if ((tls_mask & TLS_EXPLICIT) == 0) | |
7779 | r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3) | |
7780 | + R_PPC64_GOT_TPREL16_DS); | |
7781 | else | |
7782 | r_type += R_PPC64_TOC16_DS - R_PPC64_TOC16; | |
7783 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
411e1bfb AM |
7784 | } |
7785 | else | |
951fd09b AM |
7786 | { |
7787 | /* LE */ | |
7788 | insn1 = 0x3c6d0000; /* addis 3,13,0 */ | |
7789 | insn2 = 0x38630000; /* addi 3,3,0 */ | |
7790 | if (tls_gd == 0) | |
7791 | { | |
7792 | /* Was an LD reloc. */ | |
7793 | r_symndx = 0; | |
e1918d23 AM |
7794 | rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; |
7795 | rel[1].r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; | |
951fd09b | 7796 | } |
0d4792f7 AM |
7797 | else if (toc_symndx != 0) |
7798 | r_symndx = toc_symndx; | |
951fd09b AM |
7799 | r_type = R_PPC64_TPREL16_HA; |
7800 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
7801 | rel[1].r_info = ELF64_R_INFO (r_symndx, | |
7802 | R_PPC64_TPREL16_LO); | |
7803 | rel[1].r_offset += 2; | |
7804 | } | |
7805 | if (insn3 == NOP | |
7806 | || insn3 == CROR_151515 || insn3 == CROR_313131) | |
7807 | { | |
7808 | insn3 = insn2; | |
7809 | insn2 = NOP; | |
7810 | rel[1].r_offset += 4; | |
7811 | } | |
7812 | bfd_put_32 (output_bfd, insn1, contents + rel->r_offset - 2); | |
7813 | bfd_put_32 (output_bfd, insn2, contents + offset); | |
7814 | bfd_put_32 (output_bfd, insn3, contents + offset + 4); | |
0d4792f7 | 7815 | if (tls_gd == 0 || toc_symndx != 0) |
951fd09b | 7816 | { |
0d4792f7 AM |
7817 | /* We changed the symbol. Start over in order |
7818 | to get h, sym, sec etc. right. */ | |
951fd09b AM |
7819 | rel--; |
7820 | continue; | |
7821 | } | |
411e1bfb | 7822 | } |
411e1bfb | 7823 | } |
411e1bfb AM |
7824 | break; |
7825 | ||
7826 | case R_PPC64_DTPMOD64: | |
951fd09b AM |
7827 | if (rel + 1 < relend |
7828 | && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64) | |
7829 | && rel[1].r_offset == rel->r_offset + 8) | |
411e1bfb | 7830 | { |
951fd09b AM |
7831 | if ((tls_mask & TLS_GD) == 0) |
7832 | { | |
7833 | rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_NONE); | |
7834 | if ((tls_mask & TLS_TPRELGD) != 0) | |
7835 | r_type = R_PPC64_TPREL64; | |
7836 | else | |
7837 | { | |
4ce794b7 | 7838 | bfd_put_64 (output_bfd, 1, contents + rel->r_offset); |
951fd09b AM |
7839 | r_type = R_PPC64_NONE; |
7840 | } | |
7841 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
7842 | } | |
7843 | } | |
7844 | else | |
7845 | { | |
7846 | if ((tls_mask & TLS_LD) == 0) | |
411e1bfb | 7847 | { |
4ce794b7 | 7848 | bfd_put_64 (output_bfd, 1, contents + rel->r_offset); |
411e1bfb | 7849 | r_type = R_PPC64_NONE; |
951fd09b | 7850 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); |
411e1bfb | 7851 | } |
411e1bfb AM |
7852 | } |
7853 | break; | |
7854 | ||
7855 | case R_PPC64_TPREL64: | |
951fd09b | 7856 | if ((tls_mask & TLS_TPREL) == 0) |
411e1bfb AM |
7857 | { |
7858 | r_type = R_PPC64_NONE; | |
7859 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
7860 | } | |
7861 | break; | |
7862 | } | |
7863 | ||
7864 | /* Handle other relocations that tweak non-addend part of insn. */ | |
86c76c7b | 7865 | insn = 0; |
b25116a9 AM |
7866 | max_br_offset = 1 << 25; |
7867 | addend = rel->r_addend; | |
65f38f15 | 7868 | switch (r_type) |
5bd4f169 AM |
7869 | { |
7870 | default: | |
65f38f15 | 7871 | break; |
5bd4f169 | 7872 | |
65f38f15 AM |
7873 | /* Branch taken prediction relocations. */ |
7874 | case R_PPC64_ADDR14_BRTAKEN: | |
7875 | case R_PPC64_REL14_BRTAKEN: | |
cedb70c5 KH |
7876 | insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */ |
7877 | /* Fall thru. */ | |
65f38f15 | 7878 | |
86c76c7b | 7879 | /* Branch not taken prediction relocations. */ |
65f38f15 AM |
7880 | case R_PPC64_ADDR14_BRNTAKEN: |
7881 | case R_PPC64_REL14_BRNTAKEN: | |
411e1bfb AM |
7882 | insn |= bfd_get_32 (output_bfd, |
7883 | contents + rel->r_offset) & ~(0x01 << 21); | |
b25116a9 | 7884 | /* Fall thru. */ |
86c76c7b | 7885 | |
b25116a9 AM |
7886 | case R_PPC64_REL14: |
7887 | max_br_offset = 1 << 15; | |
7888 | /* Fall thru. */ | |
5bd4f169 | 7889 | |
65f38f15 | 7890 | case R_PPC64_REL24: |
ad8e1ba5 AM |
7891 | /* Calls to functions with a different TOC, such as calls to |
7892 | shared objects, need to alter the TOC pointer. This is | |
7893 | done using a linkage stub. A REL24 branching to these | |
7894 | linkage stubs needs to be followed by a nop, as the nop | |
7895 | will be replaced with an instruction to restore the TOC | |
7896 | base pointer. */ | |
b25116a9 | 7897 | stub_entry = NULL; |
ad8e1ba5 | 7898 | if (((h != NULL |
34814b9f | 7899 | && (fdh = &((struct ppc_link_hash_entry *) h)->oh->elf) != NULL |
ad8e1ba5 AM |
7900 | && fdh->plt.plist != NULL) |
7901 | || ((fdh = h, sec) != NULL | |
7902 | && sec->output_section != NULL | |
b25116a9 | 7903 | && sec->id <= htab->top_id |
ad8e1ba5 AM |
7904 | && (htab->stub_group[sec->id].toc_off |
7905 | != htab->stub_group[input_section->id].toc_off))) | |
721956f4 | 7906 | && (stub_entry = ppc_get_stub_entry (input_section, sec, fdh, |
ad8e1ba5 AM |
7907 | rel, htab)) != NULL |
7908 | && (stub_entry->stub_type == ppc_stub_plt_call | |
7909 | || stub_entry->stub_type == ppc_stub_plt_branch_r2off | |
7910 | || stub_entry->stub_type == ppc_stub_long_branch_r2off)) | |
41bd81ab | 7911 | { |
b25116a9 | 7912 | bfd_boolean can_plt_call = FALSE; |
721956f4 | 7913 | |
eea6121a | 7914 | if (rel->r_offset + 8 <= input_section->size) |
41bd81ab | 7915 | { |
b25116a9 AM |
7916 | unsigned long nop; |
7917 | nop = bfd_get_32 (input_bfd, contents + rel->r_offset + 4); | |
7918 | if (nop == NOP | |
7919 | || nop == CROR_151515 || nop == CROR_313131) | |
41bd81ab | 7920 | { |
4ce794b7 | 7921 | bfd_put_32 (input_bfd, LD_R2_40R1, |
411e1bfb | 7922 | contents + rel->r_offset + 4); |
b25116a9 | 7923 | can_plt_call = TRUE; |
41bd81ab | 7924 | } |
5bd4f169 | 7925 | } |
721956f4 AM |
7926 | |
7927 | if (!can_plt_call) | |
7928 | { | |
ad8e1ba5 AM |
7929 | if (stub_entry->stub_type == ppc_stub_plt_call) |
7930 | { | |
7931 | /* If this is a plain branch rather than a branch | |
7932 | and link, don't require a nop. */ | |
b25116a9 AM |
7933 | unsigned long br; |
7934 | br = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
7935 | if ((br & 1) == 0) | |
7936 | can_plt_call = TRUE; | |
ad8e1ba5 | 7937 | } |
6ab189d5 AM |
7938 | else if (h != NULL |
7939 | && strcmp (h->root.root.string, | |
7940 | ".__libc_start_main") == 0) | |
7941 | { | |
7942 | /* Allow crt1 branch to go via a toc adjusting stub. */ | |
b25116a9 | 7943 | can_plt_call = TRUE; |
6ab189d5 | 7944 | } |
ad8e1ba5 AM |
7945 | else |
7946 | { | |
7947 | if (strcmp (input_section->output_section->name, | |
7948 | ".init") == 0 | |
7949 | || strcmp (input_section->output_section->name, | |
7950 | ".fini") == 0) | |
7951 | (*_bfd_error_handler) | |
7952 | (_("%s(%s+0x%lx): automatic multiple TOCs " | |
7953 | "not supported using your crt files; " | |
7954 | "recompile with -mminimal-toc or upgrade gcc"), | |
7955 | bfd_archive_filename (input_bfd), | |
7956 | input_section->name, | |
7957 | (long) rel->r_offset); | |
7958 | else | |
7959 | (*_bfd_error_handler) | |
7960 | (_("%s(%s+0x%lx): sibling call optimization to `%s' " | |
7961 | "does not allow automatic multiple TOCs; " | |
7962 | "recompile with -mminimal-toc or " | |
7963 | "-fno-optimize-sibling-calls, " | |
7964 | "or make `%s' extern"), | |
7965 | bfd_archive_filename (input_bfd), | |
7966 | input_section->name, | |
7967 | (long) rel->r_offset, | |
7968 | sym_name, | |
7969 | sym_name); | |
7970 | bfd_set_error (bfd_error_bad_value); | |
7971 | ret = FALSE; | |
7972 | } | |
721956f4 AM |
7973 | } |
7974 | ||
b25116a9 AM |
7975 | if (can_plt_call |
7976 | && stub_entry->stub_type == ppc_stub_plt_call) | |
7977 | unresolved_reloc = FALSE; | |
7978 | } | |
7979 | ||
7980 | /* If the branch is out of reach we ought to have a long | |
7981 | branch stub. */ | |
7982 | from = (rel->r_offset | |
7983 | + input_section->output_offset | |
7984 | + input_section->output_section->vma); | |
7985 | ||
7986 | if (stub_entry == NULL | |
7987 | && (relocation + rel->r_addend - from + max_br_offset | |
7988 | >= 2 * max_br_offset) | |
7989 | && r_type != R_PPC64_ADDR14_BRTAKEN | |
7990 | && r_type != R_PPC64_ADDR14_BRNTAKEN) | |
7991 | stub_entry = ppc_get_stub_entry (input_section, sec, h, rel, htab); | |
7992 | ||
7993 | if (stub_entry != NULL) | |
7994 | { | |
7995 | /* Munge up the value and addend so that we call the stub | |
7996 | rather than the procedure directly. */ | |
7997 | relocation = (stub_entry->stub_offset | |
7998 | + stub_entry->stub_sec->output_offset | |
7999 | + stub_entry->stub_sec->output_section->vma); | |
8000 | addend = 0; | |
8001 | } | |
8002 | ||
8003 | if (insn != 0) | |
8004 | { | |
8005 | if (is_power4) | |
721956f4 | 8006 | { |
b25116a9 AM |
8007 | /* Set 'a' bit. This is 0b00010 in BO field for branch |
8008 | on CR(BI) insns (BO == 001at or 011at), and 0b01000 | |
8009 | for branch on CTR insns (BO == 1a00t or 1a01t). */ | |
8010 | if ((insn & (0x14 << 21)) == (0x04 << 21)) | |
8011 | insn |= 0x02 << 21; | |
8012 | else if ((insn & (0x14 << 21)) == (0x10 << 21)) | |
8013 | insn |= 0x08 << 21; | |
8014 | else | |
8015 | break; | |
8016 | } | |
8017 | else | |
8018 | { | |
8019 | /* Invert 'y' bit if not the default. */ | |
8020 | if ((bfd_signed_vma) (relocation + rel->r_addend - from) < 0) | |
8021 | insn ^= 0x01 << 21; | |
721956f4 | 8022 | } |
b25116a9 AM |
8023 | |
8024 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset); | |
5bd4f169 | 8025 | } |
e86ce104 | 8026 | |
06da1e8e AM |
8027 | /* NOP out calls to undefined weak functions. |
8028 | We can thus call a weak function without first | |
8029 | checking whether the function is defined. */ | |
b25116a9 AM |
8030 | else if (h != NULL |
8031 | && h->root.type == bfd_link_hash_undefweak | |
8032 | && r_type == R_PPC64_REL24 | |
8033 | && relocation == 0 | |
8034 | && rel->r_addend == 0) | |
e86ce104 | 8035 | { |
06da1e8e AM |
8036 | bfd_put_32 (output_bfd, NOP, contents + rel->r_offset); |
8037 | continue; | |
e86ce104 | 8038 | } |
65f38f15 AM |
8039 | break; |
8040 | } | |
5bd4f169 | 8041 | |
65f38f15 | 8042 | /* Set `addend'. */ |
411e1bfb | 8043 | tls_type = 0; |
65f38f15 AM |
8044 | switch (r_type) |
8045 | { | |
8046 | default: | |
8047 | (*_bfd_error_handler) | |
8048 | (_("%s: unknown relocation type %d for symbol %s"), | |
8049 | bfd_archive_filename (input_bfd), (int) r_type, sym_name); | |
5bd4f169 | 8050 | |
65f38f15 | 8051 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 8052 | ret = FALSE; |
65f38f15 | 8053 | continue; |
5bd4f169 | 8054 | |
65f38f15 | 8055 | case R_PPC64_NONE: |
411e1bfb | 8056 | case R_PPC64_TLS: |
04c9666a AM |
8057 | case R_PPC64_GNU_VTINHERIT: |
8058 | case R_PPC64_GNU_VTENTRY: | |
65f38f15 | 8059 | continue; |
5bd4f169 AM |
8060 | |
8061 | /* GOT16 relocations. Like an ADDR16 using the symbol's | |
8062 | address in the GOT as relocation value instead of the | |
411e1bfb | 8063 | symbol's value itself. Also, create a GOT entry for the |
5bd4f169 | 8064 | symbol and put the symbol value there. */ |
411e1bfb AM |
8065 | case R_PPC64_GOT_TLSGD16: |
8066 | case R_PPC64_GOT_TLSGD16_LO: | |
8067 | case R_PPC64_GOT_TLSGD16_HI: | |
8068 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b | 8069 | tls_type = TLS_TLS | TLS_GD; |
411e1bfb AM |
8070 | goto dogot; |
8071 | ||
8072 | case R_PPC64_GOT_TLSLD16: | |
8073 | case R_PPC64_GOT_TLSLD16_LO: | |
8074 | case R_PPC64_GOT_TLSLD16_HI: | |
8075 | case R_PPC64_GOT_TLSLD16_HA: | |
951fd09b | 8076 | tls_type = TLS_TLS | TLS_LD; |
411e1bfb AM |
8077 | goto dogot; |
8078 | ||
8079 | case R_PPC64_GOT_TPREL16_DS: | |
8080 | case R_PPC64_GOT_TPREL16_LO_DS: | |
8081 | case R_PPC64_GOT_TPREL16_HI: | |
8082 | case R_PPC64_GOT_TPREL16_HA: | |
8083 | tls_type = TLS_TLS | TLS_TPREL; | |
8084 | goto dogot; | |
8085 | ||
8086 | case R_PPC64_GOT_DTPREL16_DS: | |
8087 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
8088 | case R_PPC64_GOT_DTPREL16_HI: | |
8089 | case R_PPC64_GOT_DTPREL16_HA: | |
8090 | tls_type = TLS_TLS | TLS_DTPREL; | |
8091 | goto dogot; | |
8092 | ||
65f38f15 AM |
8093 | case R_PPC64_GOT16: |
8094 | case R_PPC64_GOT16_LO: | |
8095 | case R_PPC64_GOT16_HI: | |
8096 | case R_PPC64_GOT16_HA: | |
8097 | case R_PPC64_GOT16_DS: | |
8098 | case R_PPC64_GOT16_LO_DS: | |
411e1bfb | 8099 | dogot: |
5bd4f169 AM |
8100 | { |
8101 | /* Relocation is to the entry for this symbol in the global | |
8102 | offset table. */ | |
e717da7e | 8103 | asection *got; |
d881513a | 8104 | bfd_vma *offp; |
5bd4f169 | 8105 | bfd_vma off; |
d881513a | 8106 | unsigned long indx = 0; |
65f38f15 | 8107 | |
d881513a AM |
8108 | if (tls_type == (TLS_TLS | TLS_LD) |
8109 | && (h == NULL | |
8110 | || !(h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC))) | |
e717da7e | 8111 | offp = &ppc64_tlsld_got (input_bfd)->offset; |
411e1bfb | 8112 | else |
5bd4f169 | 8113 | { |
d881513a | 8114 | struct got_entry *ent; |
5bd4f169 | 8115 | |
d881513a AM |
8116 | if (h != NULL) |
8117 | { | |
8118 | bfd_boolean dyn = htab->elf.dynamic_sections_created; | |
f4656909 | 8119 | if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h) |
d881513a | 8120 | || (info->shared |
586119b3 | 8121 | && SYMBOL_REFERENCES_LOCAL (info, h))) |
d881513a AM |
8122 | /* This is actually a static link, or it is a |
8123 | -Bsymbolic link and the symbol is defined | |
8124 | locally, or the symbol was forced to be local | |
8125 | because of a version file. */ | |
8126 | ; | |
8127 | else | |
8128 | { | |
8129 | indx = h->dynindx; | |
8130 | unresolved_reloc = FALSE; | |
8131 | } | |
8132 | ent = h->got.glist; | |
8133 | } | |
411e1bfb | 8134 | else |
5bd4f169 | 8135 | { |
d881513a AM |
8136 | if (local_got_ents == NULL) |
8137 | abort (); | |
8138 | ent = local_got_ents[r_symndx]; | |
5bd4f169 | 8139 | } |
d881513a AM |
8140 | |
8141 | for (; ent != NULL; ent = ent->next) | |
8142 | if (ent->addend == rel->r_addend | |
e717da7e | 8143 | && ent->owner == input_bfd |
d881513a AM |
8144 | && ent->tls_type == tls_type) |
8145 | break; | |
8146 | if (ent == NULL) | |
8147 | abort (); | |
8148 | offp = &ent->got.offset; | |
5bd4f169 | 8149 | } |
411e1bfb | 8150 | |
e717da7e AM |
8151 | got = ppc64_elf_tdata (input_bfd)->got; |
8152 | if (got == NULL) | |
8153 | abort (); | |
8154 | ||
411e1bfb AM |
8155 | /* The offset must always be a multiple of 8. We use the |
8156 | least significant bit to record whether we have already | |
8157 | processed this entry. */ | |
d881513a | 8158 | off = *offp; |
411e1bfb AM |
8159 | if ((off & 1) != 0) |
8160 | off &= ~1; | |
5bd4f169 AM |
8161 | else |
8162 | { | |
411e1bfb AM |
8163 | /* Generate relocs for the dynamic linker, except in |
8164 | the case of TLSLD where we'll use one entry per | |
8165 | module. */ | |
e717da7e AM |
8166 | asection *relgot = ppc64_elf_tdata (input_bfd)->relgot; |
8167 | ||
d881513a | 8168 | *offp = off | 1; |
4e795f50 AM |
8169 | if ((info->shared || indx != 0) |
8170 | && (h == NULL | |
8171 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
8172 | || h->root.type != bfd_link_hash_undefweak)) | |
5bd4f169 | 8173 | { |
e717da7e AM |
8174 | outrel.r_offset = (got->output_section->vma |
8175 | + got->output_offset | |
411e1bfb | 8176 | + off); |
81407a69 | 8177 | outrel.r_addend = rel->r_addend; |
d881513a | 8178 | if (tls_type & (TLS_LD | TLS_GD)) |
5bd4f169 | 8179 | { |
411e1bfb | 8180 | outrel.r_addend = 0; |
e515b051 | 8181 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPMOD64); |
d881513a AM |
8182 | if (tls_type == (TLS_TLS | TLS_GD)) |
8183 | { | |
e717da7e AM |
8184 | loc = relgot->contents; |
8185 | loc += (relgot->reloc_count++ | |
d881513a AM |
8186 | * sizeof (Elf64_External_Rela)); |
8187 | bfd_elf64_swap_reloca_out (output_bfd, | |
8188 | &outrel, loc); | |
e515b051 | 8189 | outrel.r_offset += 8; |
81407a69 | 8190 | outrel.r_addend = rel->r_addend; |
d881513a AM |
8191 | outrel.r_info |
8192 | = ELF64_R_INFO (indx, R_PPC64_DTPREL64); | |
d881513a | 8193 | } |
411e1bfb | 8194 | } |
951fd09b | 8195 | else if (tls_type == (TLS_TLS | TLS_DTPREL)) |
411e1bfb | 8196 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64); |
951fd09b | 8197 | else if (tls_type == (TLS_TLS | TLS_TPREL)) |
411e1bfb AM |
8198 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_TPREL64); |
8199 | else if (indx == 0) | |
81407a69 AM |
8200 | { |
8201 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_RELATIVE); | |
8202 | ||
8203 | /* Write the .got section contents for the sake | |
8204 | of prelink. */ | |
e717da7e | 8205 | loc = got->contents + off; |
23fbd6fa JJ |
8206 | bfd_put_64 (output_bfd, outrel.r_addend + relocation, |
8207 | loc); | |
81407a69 | 8208 | } |
411e1bfb AM |
8209 | else |
8210 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT); | |
81407a69 AM |
8211 | |
8212 | if (indx == 0 && tls_type != (TLS_TLS | TLS_LD)) | |
e515b051 AM |
8213 | { |
8214 | outrel.r_addend += relocation; | |
8215 | if (tls_type & (TLS_GD | TLS_DTPREL | TLS_TPREL)) | |
e1918d23 | 8216 | outrel.r_addend -= htab->elf.tls_sec->vma; |
e515b051 | 8217 | } |
e717da7e AM |
8218 | loc = relgot->contents; |
8219 | loc += (relgot->reloc_count++ | |
411e1bfb AM |
8220 | * sizeof (Elf64_External_Rela)); |
8221 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); | |
8222 | } | |
8223 | ||
ad8e1ba5 | 8224 | /* Init the .got section contents here if we're not |
81407a69 | 8225 | emitting a reloc. */ |
d881513a | 8226 | else |
411e1bfb | 8227 | { |
d881513a | 8228 | relocation += rel->r_addend; |
7b609f53 AM |
8229 | if (tls_type == (TLS_TLS | TLS_LD)) |
8230 | relocation = 1; | |
8231 | else if (tls_type != 0) | |
411e1bfb | 8232 | { |
e1918d23 | 8233 | relocation -= htab->elf.tls_sec->vma + DTP_OFFSET; |
7b609f53 | 8234 | if (tls_type == (TLS_TLS | TLS_TPREL)) |
411e1bfb | 8235 | relocation += DTP_OFFSET - TP_OFFSET; |
5bd4f169 | 8236 | |
7b609f53 AM |
8237 | if (tls_type == (TLS_TLS | TLS_GD)) |
8238 | { | |
8239 | bfd_put_64 (output_bfd, relocation, | |
e717da7e | 8240 | got->contents + off + 8); |
7b609f53 AM |
8241 | relocation = 1; |
8242 | } | |
411e1bfb | 8243 | } |
7b609f53 | 8244 | |
411e1bfb | 8245 | bfd_put_64 (output_bfd, relocation, |
e717da7e | 8246 | got->contents + off); |
5bd4f169 AM |
8247 | } |
8248 | } | |
8249 | ||
65f38f15 AM |
8250 | if (off >= (bfd_vma) -2) |
8251 | abort (); | |
8252 | ||
e717da7e | 8253 | relocation = got->output_offset + off; |
65f38f15 | 8254 | |
5bd4f169 | 8255 | /* TOC base (r2) is TOC start plus 0x8000. */ |
e717da7e | 8256 | addend = -TOC_BASE_OFF; |
5bd4f169 | 8257 | } |
65f38f15 AM |
8258 | break; |
8259 | ||
8260 | case R_PPC64_PLT16_HA: | |
8261 | case R_PPC64_PLT16_HI: | |
8262 | case R_PPC64_PLT16_LO: | |
8263 | case R_PPC64_PLT32: | |
8264 | case R_PPC64_PLT64: | |
8265 | /* Relocation is to the entry for this symbol in the | |
8266 | procedure linkage table. */ | |
8267 | ||
8268 | /* Resolve a PLT reloc against a local symbol directly, | |
8269 | without using the procedure linkage table. */ | |
8270 | if (h == NULL) | |
8271 | break; | |
8272 | ||
411e1bfb AM |
8273 | /* It's possible that we didn't make a PLT entry for this |
8274 | symbol. This happens when statically linking PIC code, | |
8275 | or when using -Bsymbolic. Go find a match if there is a | |
8276 | PLT entry. */ | |
4ce794b7 | 8277 | if (htab->plt != NULL) |
65f38f15 | 8278 | { |
411e1bfb AM |
8279 | struct plt_entry *ent; |
8280 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) | |
8281 | if (ent->addend == rel->r_addend | |
8282 | && ent->plt.offset != (bfd_vma) -1) | |
8283 | { | |
4ce794b7 AM |
8284 | relocation = (htab->plt->output_section->vma |
8285 | + htab->plt->output_offset | |
411e1bfb AM |
8286 | + ent->plt.offset); |
8287 | unresolved_reloc = FALSE; | |
8288 | } | |
65f38f15 | 8289 | } |
65f38f15 | 8290 | break; |
5bd4f169 | 8291 | |
0b13192e AM |
8292 | case R_PPC64_TOC: |
8293 | /* Relocation value is TOC base. */ | |
8294 | relocation = TOCstart; | |
8295 | if (r_symndx == 0) | |
8296 | relocation += htab->stub_group[input_section->id].toc_off; | |
8517fae7 AM |
8297 | else if (unresolved_reloc) |
8298 | ; | |
8299 | else if (sec != NULL && sec->id <= htab->top_id) | |
0b13192e AM |
8300 | relocation += htab->stub_group[sec->id].toc_off; |
8301 | else | |
8302 | unresolved_reloc = TRUE; | |
8303 | goto dodyn2; | |
8304 | ||
5bd4f169 AM |
8305 | /* TOC16 relocs. We want the offset relative to the TOC base, |
8306 | which is the address of the start of the TOC plus 0x8000. | |
8307 | The TOC consists of sections .got, .toc, .tocbss, and .plt, | |
8308 | in this order. */ | |
65f38f15 AM |
8309 | case R_PPC64_TOC16: |
8310 | case R_PPC64_TOC16_LO: | |
8311 | case R_PPC64_TOC16_HI: | |
8312 | case R_PPC64_TOC16_DS: | |
8313 | case R_PPC64_TOC16_LO_DS: | |
8314 | case R_PPC64_TOC16_HA: | |
ad8e1ba5 | 8315 | addend -= TOCstart + htab->stub_group[input_section->id].toc_off; |
5bd4f169 AM |
8316 | break; |
8317 | ||
8318 | /* Relocate against the beginning of the section. */ | |
65f38f15 AM |
8319 | case R_PPC64_SECTOFF: |
8320 | case R_PPC64_SECTOFF_LO: | |
8321 | case R_PPC64_SECTOFF_HI: | |
8322 | case R_PPC64_SECTOFF_DS: | |
8323 | case R_PPC64_SECTOFF_LO_DS: | |
8324 | case R_PPC64_SECTOFF_HA: | |
4ce794b7 | 8325 | if (sec != NULL) |
65f38f15 | 8326 | addend -= sec->output_section->vma; |
5bd4f169 AM |
8327 | break; |
8328 | ||
721956f4 AM |
8329 | case R_PPC64_REL14: |
8330 | case R_PPC64_REL14_BRNTAKEN: | |
8331 | case R_PPC64_REL14_BRTAKEN: | |
5d1634d7 AM |
8332 | case R_PPC64_REL24: |
8333 | break; | |
8334 | ||
411e1bfb AM |
8335 | case R_PPC64_TPREL16: |
8336 | case R_PPC64_TPREL16_LO: | |
8337 | case R_PPC64_TPREL16_HI: | |
8338 | case R_PPC64_TPREL16_HA: | |
8339 | case R_PPC64_TPREL16_DS: | |
8340 | case R_PPC64_TPREL16_LO_DS: | |
8341 | case R_PPC64_TPREL16_HIGHER: | |
8342 | case R_PPC64_TPREL16_HIGHERA: | |
8343 | case R_PPC64_TPREL16_HIGHEST: | |
8344 | case R_PPC64_TPREL16_HIGHESTA: | |
e1918d23 | 8345 | addend -= htab->elf.tls_sec->vma + TP_OFFSET; |
411e1bfb AM |
8346 | if (info->shared) |
8347 | /* The TPREL16 relocs shouldn't really be used in shared | |
8348 | libs as they will result in DT_TEXTREL being set, but | |
8349 | support them anyway. */ | |
8350 | goto dodyn; | |
8351 | break; | |
8352 | ||
8353 | case R_PPC64_DTPREL16: | |
8354 | case R_PPC64_DTPREL16_LO: | |
8355 | case R_PPC64_DTPREL16_HI: | |
8356 | case R_PPC64_DTPREL16_HA: | |
8357 | case R_PPC64_DTPREL16_DS: | |
8358 | case R_PPC64_DTPREL16_LO_DS: | |
8359 | case R_PPC64_DTPREL16_HIGHER: | |
8360 | case R_PPC64_DTPREL16_HIGHERA: | |
8361 | case R_PPC64_DTPREL16_HIGHEST: | |
8362 | case R_PPC64_DTPREL16_HIGHESTA: | |
e1918d23 | 8363 | addend -= htab->elf.tls_sec->vma + DTP_OFFSET; |
411e1bfb AM |
8364 | break; |
8365 | ||
e515b051 AM |
8366 | case R_PPC64_DTPMOD64: |
8367 | relocation = 1; | |
8368 | addend = 0; | |
8369 | goto dodyn; | |
8370 | ||
411e1bfb | 8371 | case R_PPC64_TPREL64: |
e1918d23 | 8372 | addend -= htab->elf.tls_sec->vma + TP_OFFSET; |
411e1bfb AM |
8373 | goto dodyn; |
8374 | ||
8375 | case R_PPC64_DTPREL64: | |
e1918d23 | 8376 | addend -= htab->elf.tls_sec->vma + DTP_OFFSET; |
411e1bfb AM |
8377 | /* Fall thru */ |
8378 | ||
65f38f15 AM |
8379 | /* Relocations that may need to be propagated if this is a |
8380 | dynamic object. */ | |
04c9666a | 8381 | case R_PPC64_REL30: |
65f38f15 AM |
8382 | case R_PPC64_REL32: |
8383 | case R_PPC64_REL64: | |
8384 | case R_PPC64_ADDR14: | |
8385 | case R_PPC64_ADDR14_BRNTAKEN: | |
8386 | case R_PPC64_ADDR14_BRTAKEN: | |
8387 | case R_PPC64_ADDR16: | |
8388 | case R_PPC64_ADDR16_DS: | |
8389 | case R_PPC64_ADDR16_HA: | |
8390 | case R_PPC64_ADDR16_HI: | |
8391 | case R_PPC64_ADDR16_HIGHER: | |
8392 | case R_PPC64_ADDR16_HIGHERA: | |
8393 | case R_PPC64_ADDR16_HIGHEST: | |
8394 | case R_PPC64_ADDR16_HIGHESTA: | |
8395 | case R_PPC64_ADDR16_LO: | |
8396 | case R_PPC64_ADDR16_LO_DS: | |
8397 | case R_PPC64_ADDR24: | |
65f38f15 AM |
8398 | case R_PPC64_ADDR32: |
8399 | case R_PPC64_ADDR64: | |
8400 | case R_PPC64_UADDR16: | |
8401 | case R_PPC64_UADDR32: | |
8402 | case R_PPC64_UADDR64: | |
ec338859 AM |
8403 | /* r_symndx will be zero only for relocs against symbols |
8404 | from removed linkonce sections, or sections discarded by | |
8405 | a linker script. */ | |
411e1bfb | 8406 | dodyn: |
5d1634d7 AM |
8407 | if (r_symndx == 0) |
8408 | break; | |
8409 | /* Fall thru. */ | |
8410 | ||
0b13192e | 8411 | dodyn2: |
5d1634d7 | 8412 | if ((input_section->flags & SEC_ALLOC) == 0) |
ec338859 AM |
8413 | break; |
8414 | ||
41bd81ab AM |
8415 | if (NO_OPD_RELOCS && is_opd) |
8416 | break; | |
8417 | ||
65f38f15 | 8418 | if ((info->shared |
4e795f50 AM |
8419 | && (h == NULL |
8420 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
8421 | || h->root.type != bfd_link_hash_undefweak) | |
411e1bfb | 8422 | && (MUST_BE_DYN_RELOC (r_type) |
f6c52c13 | 8423 | || !SYMBOL_CALLS_LOCAL (info, h))) |
f4656909 AM |
8424 | || (ELIMINATE_COPY_RELOCS |
8425 | && !info->shared | |
65f38f15 AM |
8426 | && h != NULL |
8427 | && h->dynindx != -1 | |
8428 | && (h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0 | |
58ac9f71 AM |
8429 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0 |
8430 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)) | |
65f38f15 AM |
8431 | { |
8432 | Elf_Internal_Rela outrel; | |
b34976b6 | 8433 | bfd_boolean skip, relocate; |
65f38f15 | 8434 | asection *sreloc; |
947216bf | 8435 | bfd_byte *loc; |
1cf1f670 | 8436 | bfd_vma out_off; |
65f38f15 AM |
8437 | |
8438 | /* When generating a dynamic object, these relocations | |
8439 | are copied into the output file to be resolved at run | |
8440 | time. */ | |
8441 | ||
b34976b6 AM |
8442 | skip = FALSE; |
8443 | relocate = FALSE; | |
65f38f15 | 8444 | |
1cf1f670 AM |
8445 | out_off = _bfd_elf_section_offset (output_bfd, info, |
8446 | input_section, rel->r_offset); | |
8447 | if (out_off == (bfd_vma) -1) | |
b34976b6 | 8448 | skip = TRUE; |
1cf1f670 | 8449 | else if (out_off == (bfd_vma) -2) |
b34976b6 | 8450 | skip = TRUE, relocate = TRUE; |
1cf1f670 AM |
8451 | out_off += (input_section->output_section->vma |
8452 | + input_section->output_offset); | |
8453 | outrel.r_offset = out_off; | |
411e1bfb | 8454 | outrel.r_addend = rel->r_addend; |
65f38f15 | 8455 | |
1cf1f670 AM |
8456 | /* Optimize unaligned reloc use. */ |
8457 | if ((r_type == R_PPC64_ADDR64 && (out_off & 7) != 0) | |
8458 | || (r_type == R_PPC64_UADDR64 && (out_off & 7) == 0)) | |
8459 | r_type ^= R_PPC64_ADDR64 ^ R_PPC64_UADDR64; | |
8460 | else if ((r_type == R_PPC64_ADDR32 && (out_off & 3) != 0) | |
8461 | || (r_type == R_PPC64_UADDR32 && (out_off & 3) == 0)) | |
8462 | r_type ^= R_PPC64_ADDR32 ^ R_PPC64_UADDR32; | |
8463 | else if ((r_type == R_PPC64_ADDR16 && (out_off & 1) != 0) | |
8464 | || (r_type == R_PPC64_UADDR16 && (out_off & 1) == 0)) | |
8465 | r_type ^= R_PPC64_ADDR16 ^ R_PPC64_UADDR16; | |
8466 | ||
65f38f15 | 8467 | if (skip) |
0bb2d96a | 8468 | memset (&outrel, 0, sizeof outrel); |
f6c52c13 | 8469 | else if (!SYMBOL_REFERENCES_LOCAL (info, h) |
0b13192e AM |
8470 | && !is_opd |
8471 | && r_type != R_PPC64_TOC) | |
0bb2d96a | 8472 | outrel.r_info = ELF64_R_INFO (h->dynindx, r_type); |
65f38f15 AM |
8473 | else |
8474 | { | |
41bd81ab AM |
8475 | /* This symbol is local, or marked to become local, |
8476 | or this is an opd section reloc which must point | |
8477 | at a local function. */ | |
65f38f15 | 8478 | outrel.r_addend += relocation; |
e86ce104 | 8479 | if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC) |
65f38f15 | 8480 | { |
3fad3c7c | 8481 | if (is_opd && h != NULL) |
afbe61cf AM |
8482 | { |
8483 | /* Lie about opd entries. This case occurs | |
8484 | when building shared libraries and we | |
8485 | reference a function in another shared | |
3fad3c7c AM |
8486 | lib. The same thing happens for a weak |
8487 | definition in an application that's | |
8488 | overridden by a strong definition in a | |
8489 | shared lib. (I believe this is a generic | |
8490 | bug in binutils handling of weak syms.) | |
8491 | In these cases we won't use the opd | |
1e2f5b6e | 8492 | entry in this lib. */ |
b34976b6 | 8493 | unresolved_reloc = FALSE; |
afbe61cf | 8494 | } |
65f38f15 | 8495 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); |
81407a69 AM |
8496 | |
8497 | /* We need to relocate .opd contents for ld.so. | |
8498 | Prelink also wants simple and consistent rules | |
8499 | for relocs. This make all RELATIVE relocs have | |
8500 | *r_offset equal to r_addend. */ | |
8501 | relocate = TRUE; | |
65f38f15 AM |
8502 | } |
8503 | else | |
8504 | { | |
8505 | long indx = 0; | |
8506 | ||
41bd81ab | 8507 | if (bfd_is_abs_section (sec)) |
65f38f15 AM |
8508 | ; |
8509 | else if (sec == NULL || sec->owner == NULL) | |
8510 | { | |
8511 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 8512 | return FALSE; |
65f38f15 AM |
8513 | } |
8514 | else | |
8515 | { | |
8516 | asection *osec; | |
8517 | ||
8518 | osec = sec->output_section; | |
8519 | indx = elf_section_data (osec)->dynindx; | |
8520 | ||
8521 | /* We are turning this relocation into one | |
8522 | against a section symbol, so subtract out | |
8523 | the output section's address but not the | |
8524 | offset of the input section in the output | |
8525 | section. */ | |
8526 | outrel.r_addend -= osec->vma; | |
8527 | } | |
8528 | ||
8529 | outrel.r_info = ELF64_R_INFO (indx, r_type); | |
8530 | } | |
8531 | } | |
8532 | ||
8533 | sreloc = elf_section_data (input_section)->sreloc; | |
8534 | if (sreloc == NULL) | |
8535 | abort (); | |
8536 | ||
947216bf AM |
8537 | loc = sreloc->contents; |
8538 | loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela); | |
65f38f15 AM |
8539 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); |
8540 | ||
8541 | /* If this reloc is against an external symbol, it will | |
8542 | be computed at runtime, so there's no need to do | |
81407a69 AM |
8543 | anything now. However, for the sake of prelink ensure |
8544 | that the section contents are a known value. */ | |
65f38f15 | 8545 | if (! relocate) |
81407a69 AM |
8546 | { |
8547 | unresolved_reloc = FALSE; | |
8548 | /* The value chosen here is quite arbitrary as ld.so | |
8549 | ignores section contents except for the special | |
8550 | case of .opd where the contents might be accessed | |
8551 | before relocation. Choose zero, as that won't | |
8552 | cause reloc overflow. */ | |
8553 | relocation = 0; | |
8554 | addend = 0; | |
8555 | /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs | |
8556 | to improve backward compatibility with older | |
8557 | versions of ld. */ | |
8558 | if (r_type == R_PPC64_ADDR64) | |
8559 | addend = outrel.r_addend; | |
8560 | /* Adjust pc_relative relocs to have zero in *r_offset. */ | |
4ce794b7 | 8561 | else if (ppc64_elf_howto_table[r_type]->pc_relative) |
000732f7 AM |
8562 | addend = (input_section->output_section->vma |
8563 | + input_section->output_offset | |
8564 | + rel->r_offset); | |
81407a69 | 8565 | } |
65f38f15 | 8566 | } |
5bd4f169 AM |
8567 | break; |
8568 | ||
65f38f15 AM |
8569 | case R_PPC64_COPY: |
8570 | case R_PPC64_GLOB_DAT: | |
8571 | case R_PPC64_JMP_SLOT: | |
8572 | case R_PPC64_RELATIVE: | |
8573 | /* We shouldn't ever see these dynamic relocs in relocatable | |
8574 | files. */ | |
ae9a127f | 8575 | /* Fall through. */ |
65f38f15 AM |
8576 | |
8577 | case R_PPC64_PLTGOT16: | |
8578 | case R_PPC64_PLTGOT16_DS: | |
8579 | case R_PPC64_PLTGOT16_HA: | |
8580 | case R_PPC64_PLTGOT16_HI: | |
8581 | case R_PPC64_PLTGOT16_LO: | |
8582 | case R_PPC64_PLTGOT16_LO_DS: | |
8583 | case R_PPC64_PLTREL32: | |
8584 | case R_PPC64_PLTREL64: | |
8585 | /* These ones haven't been implemented yet. */ | |
8586 | ||
8587 | (*_bfd_error_handler) | |
7b609f53 | 8588 | (_("%s: relocation %s is not supported for symbol %s."), |
65f38f15 | 8589 | bfd_archive_filename (input_bfd), |
4ce794b7 | 8590 | ppc64_elf_howto_table[r_type]->name, sym_name); |
5bd4f169 AM |
8591 | |
8592 | bfd_set_error (bfd_error_invalid_operation); | |
b34976b6 | 8593 | ret = FALSE; |
5bd4f169 | 8594 | continue; |
65f38f15 | 8595 | } |
5bd4f169 | 8596 | |
65f38f15 AM |
8597 | /* Do any further special processing. */ |
8598 | switch (r_type) | |
8599 | { | |
8600 | default: | |
8601 | break; | |
8602 | ||
8603 | case R_PPC64_ADDR16_HA: | |
8604 | case R_PPC64_ADDR16_HIGHERA: | |
8605 | case R_PPC64_ADDR16_HIGHESTA: | |
86bbe32f AM |
8606 | case R_PPC64_GOT16_HA: |
8607 | case R_PPC64_PLTGOT16_HA: | |
65f38f15 AM |
8608 | case R_PPC64_PLT16_HA: |
8609 | case R_PPC64_TOC16_HA: | |
8610 | case R_PPC64_SECTOFF_HA: | |
411e1bfb AM |
8611 | case R_PPC64_TPREL16_HA: |
8612 | case R_PPC64_DTPREL16_HA: | |
8613 | case R_PPC64_GOT_TLSGD16_HA: | |
8614 | case R_PPC64_GOT_TLSLD16_HA: | |
8615 | case R_PPC64_GOT_TPREL16_HA: | |
8616 | case R_PPC64_GOT_DTPREL16_HA: | |
8617 | case R_PPC64_TPREL16_HIGHER: | |
8618 | case R_PPC64_TPREL16_HIGHERA: | |
8619 | case R_PPC64_TPREL16_HIGHEST: | |
8620 | case R_PPC64_TPREL16_HIGHESTA: | |
8621 | case R_PPC64_DTPREL16_HIGHER: | |
8622 | case R_PPC64_DTPREL16_HIGHERA: | |
8623 | case R_PPC64_DTPREL16_HIGHEST: | |
8624 | case R_PPC64_DTPREL16_HIGHESTA: | |
65f38f15 AM |
8625 | /* It's just possible that this symbol is a weak symbol |
8626 | that's not actually defined anywhere. In that case, | |
8627 | 'sec' would be NULL, and we should leave the symbol | |
8628 | alone (it will be set to zero elsewhere in the link). */ | |
8629 | if (sec != NULL) | |
e515b051 AM |
8630 | /* Add 0x10000 if sign bit in 0:15 is set. |
8631 | Bits 0:15 are not used. */ | |
8632 | addend += 0x8000; | |
65f38f15 AM |
8633 | break; |
8634 | ||
8635 | case R_PPC64_ADDR16_DS: | |
8636 | case R_PPC64_ADDR16_LO_DS: | |
8637 | case R_PPC64_GOT16_DS: | |
8638 | case R_PPC64_GOT16_LO_DS: | |
8639 | case R_PPC64_PLT16_LO_DS: | |
8640 | case R_PPC64_SECTOFF_DS: | |
8641 | case R_PPC64_SECTOFF_LO_DS: | |
8642 | case R_PPC64_TOC16_DS: | |
8643 | case R_PPC64_TOC16_LO_DS: | |
8644 | case R_PPC64_PLTGOT16_DS: | |
8645 | case R_PPC64_PLTGOT16_LO_DS: | |
411e1bfb AM |
8646 | case R_PPC64_GOT_TPREL16_DS: |
8647 | case R_PPC64_GOT_TPREL16_LO_DS: | |
8648 | case R_PPC64_GOT_DTPREL16_DS: | |
8649 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
8650 | case R_PPC64_TPREL16_DS: | |
8651 | case R_PPC64_TPREL16_LO_DS: | |
8652 | case R_PPC64_DTPREL16_DS: | |
8653 | case R_PPC64_DTPREL16_LO_DS: | |
adadcc0c AM |
8654 | insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3)); |
8655 | mask = 3; | |
8656 | /* If this reloc is against an lq insn, then the value must be | |
8657 | a multiple of 16. This is somewhat of a hack, but the | |
8658 | "correct" way to do this by defining _DQ forms of all the | |
8659 | _DS relocs bloats all reloc switches in this file. It | |
8660 | doesn't seem to make much sense to use any of these relocs | |
8661 | in data, so testing the insn should be safe. */ | |
494dac0c | 8662 | if ((insn & (0x3f << 26)) == (56u << 26)) |
adadcc0c AM |
8663 | mask = 15; |
8664 | if (((relocation + addend) & mask) != 0) | |
65f38f15 AM |
8665 | { |
8666 | (*_bfd_error_handler) | |
adadcc0c | 8667 | (_("%s: error: relocation %s not a multiple of %d"), |
65f38f15 | 8668 | bfd_archive_filename (input_bfd), |
4ce794b7 | 8669 | ppc64_elf_howto_table[r_type]->name, |
adadcc0c | 8670 | mask + 1); |
65f38f15 | 8671 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 8672 | ret = FALSE; |
65f38f15 AM |
8673 | continue; |
8674 | } | |
8675 | break; | |
5bd4f169 AM |
8676 | } |
8677 | ||
239e1f3a AM |
8678 | /* Dynamic relocs are not propagated for SEC_DEBUGGING sections |
8679 | because such sections are not SEC_ALLOC and thus ld.so will | |
8680 | not process them. */ | |
65f38f15 | 8681 | if (unresolved_reloc |
239e1f3a | 8682 | && !((input_section->flags & SEC_DEBUGGING) != 0 |
65f38f15 | 8683 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0)) |
9c07fe7c AM |
8684 | { |
8685 | (*_bfd_error_handler) | |
7b609f53 | 8686 | (_("%s(%s+0x%lx): unresolvable %s relocation against symbol `%s'"), |
9c07fe7c AM |
8687 | bfd_archive_filename (input_bfd), |
8688 | bfd_get_section_name (input_bfd, input_section), | |
8689 | (long) rel->r_offset, | |
7b609f53 | 8690 | ppc64_elf_howto_table[(int) r_type]->name, |
9c07fe7c | 8691 | h->root.root.string); |
b34976b6 | 8692 | ret = FALSE; |
9c07fe7c | 8693 | } |
5bd4f169 | 8694 | |
65f38f15 | 8695 | r = _bfd_final_link_relocate (ppc64_elf_howto_table[(int) r_type], |
5bd4f169 AM |
8696 | input_bfd, |
8697 | input_section, | |
8698 | contents, | |
411e1bfb | 8699 | rel->r_offset, |
5bd4f169 AM |
8700 | relocation, |
8701 | addend); | |
8702 | ||
ef60b7ff | 8703 | if (r != bfd_reloc_ok) |
5bd4f169 | 8704 | { |
cd27b276 AM |
8705 | if (sym_name == NULL) |
8706 | sym_name = "(null)"; | |
8707 | if (r == bfd_reloc_overflow) | |
5bd4f169 | 8708 | { |
cd27b276 AM |
8709 | if (warned) |
8710 | continue; | |
8711 | if (h != NULL | |
8712 | && h->root.type == bfd_link_hash_undefweak | |
4ce794b7 | 8713 | && ppc64_elf_howto_table[r_type]->pc_relative) |
5bd4f169 AM |
8714 | { |
8715 | /* Assume this is a call protected by other code that | |
8716 | detects the symbol is undefined. If this is the case, | |
8717 | we can safely ignore the overflow. If not, the | |
8718 | program is hosed anyway, and a little warning isn't | |
8719 | going to help. */ | |
8720 | ||
8721 | continue; | |
8722 | } | |
8723 | ||
ef60b7ff | 8724 | if (!((*info->callbacks->reloc_overflow) |
4ce794b7 | 8725 | (info, sym_name, ppc64_elf_howto_table[r_type]->name, |
411e1bfb | 8726 | rel->r_addend, input_bfd, input_section, rel->r_offset))) |
b34976b6 | 8727 | return FALSE; |
ef60b7ff AM |
8728 | } |
8729 | else | |
8730 | { | |
8731 | (*_bfd_error_handler) | |
7b609f53 | 8732 | (_("%s(%s+0x%lx): %s reloc against `%s': error %d"), |
ef60b7ff AM |
8733 | bfd_archive_filename (input_bfd), |
8734 | bfd_get_section_name (input_bfd, input_section), | |
7b609f53 | 8735 | (long) rel->r_offset, |
4ce794b7 | 8736 | ppc64_elf_howto_table[r_type]->name, |
7b609f53 AM |
8737 | sym_name, |
8738 | (int) r); | |
b34976b6 | 8739 | ret = FALSE; |
ef60b7ff | 8740 | } |
5bd4f169 | 8741 | } |
5bd4f169 AM |
8742 | } |
8743 | ||
5bd4f169 AM |
8744 | return ret; |
8745 | } | |
8746 | ||
754021d0 AM |
8747 | /* Adjust the value of any local symbols in opd sections. */ |
8748 | ||
8749 | static bfd_boolean | |
8750 | ppc64_elf_output_symbol_hook (struct bfd_link_info *info, | |
8751 | const char *name ATTRIBUTE_UNUSED, | |
8752 | Elf_Internal_Sym *elfsym, | |
8753 | asection *input_sec, | |
8754 | struct elf_link_hash_entry *h) | |
8755 | { | |
4025353c | 8756 | long *opd_adjust, adjust; |
754021d0 AM |
8757 | bfd_vma value; |
8758 | ||
4025353c AM |
8759 | if (h != NULL) |
8760 | return TRUE; | |
8761 | ||
8762 | opd_adjust = get_opd_info (input_sec); | |
8763 | if (opd_adjust == NULL) | |
754021d0 AM |
8764 | return TRUE; |
8765 | ||
8766 | value = elfsym->st_value - input_sec->output_offset; | |
8767 | if (!info->relocatable) | |
8768 | value -= input_sec->output_section->vma; | |
8769 | ||
4025353c AM |
8770 | adjust = opd_adjust[value / 24]; |
8771 | if (adjust == -1) | |
8772 | elfsym->st_value = 0; | |
8773 | else | |
8774 | elfsym->st_value += adjust; | |
754021d0 AM |
8775 | return TRUE; |
8776 | } | |
8777 | ||
5bd4f169 AM |
8778 | /* Finish up dynamic symbol handling. We set the contents of various |
8779 | dynamic sections here. */ | |
8780 | ||
b34976b6 | 8781 | static bfd_boolean |
4ce794b7 AM |
8782 | ppc64_elf_finish_dynamic_symbol (bfd *output_bfd, |
8783 | struct bfd_link_info *info, | |
8784 | struct elf_link_hash_entry *h, | |
8785 | Elf_Internal_Sym *sym) | |
5bd4f169 | 8786 | { |
65f38f15 | 8787 | struct ppc_link_hash_table *htab; |
5bd4f169 AM |
8788 | bfd *dynobj; |
8789 | ||
65f38f15 AM |
8790 | htab = ppc_hash_table (info); |
8791 | dynobj = htab->elf.dynobj; | |
5bd4f169 | 8792 | |
411e1bfb | 8793 | if (((struct ppc_link_hash_entry *) h)->is_func_descriptor) |
5bd4f169 | 8794 | { |
411e1bfb | 8795 | struct plt_entry *ent; |
65f38f15 | 8796 | Elf_Internal_Rela rela; |
947216bf | 8797 | bfd_byte *loc; |
5bd4f169 | 8798 | |
411e1bfb AM |
8799 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) |
8800 | if (ent->plt.offset != (bfd_vma) -1) | |
8801 | { | |
8802 | /* This symbol has an entry in the procedure linkage | |
8803 | table. Set it up. */ | |
5bd4f169 | 8804 | |
4ce794b7 AM |
8805 | if (htab->plt == NULL |
8806 | || htab->relplt == NULL | |
8807 | || htab->glink == NULL) | |
411e1bfb | 8808 | abort (); |
5bd4f169 | 8809 | |
411e1bfb AM |
8810 | /* Create a JMP_SLOT reloc to inform the dynamic linker to |
8811 | fill in the PLT entry. */ | |
4ce794b7 AM |
8812 | rela.r_offset = (htab->plt->output_section->vma |
8813 | + htab->plt->output_offset | |
411e1bfb AM |
8814 | + ent->plt.offset); |
8815 | rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT); | |
8816 | rela.r_addend = ent->addend; | |
5bd4f169 | 8817 | |
4ce794b7 | 8818 | loc = htab->relplt->contents; |
411e1bfb AM |
8819 | loc += ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE) / PLT_ENTRY_SIZE |
8820 | * sizeof (Elf64_External_Rela)); | |
8821 | bfd_elf64_swap_reloca_out (output_bfd, &rela, loc); | |
8822 | } | |
5bd4f169 AM |
8823 | } |
8824 | ||
8825 | if ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_COPY) != 0) | |
8826 | { | |
5bd4f169 | 8827 | Elf_Internal_Rela rela; |
947216bf | 8828 | bfd_byte *loc; |
5bd4f169 | 8829 | |
65f38f15 | 8830 | /* This symbol needs a copy reloc. Set it up. */ |
5bd4f169 | 8831 | |
65f38f15 AM |
8832 | if (h->dynindx == -1 |
8833 | || (h->root.type != bfd_link_hash_defined | |
8834 | && h->root.type != bfd_link_hash_defweak) | |
4ce794b7 | 8835 | || htab->relbss == NULL) |
65f38f15 | 8836 | abort (); |
5bd4f169 AM |
8837 | |
8838 | rela.r_offset = (h->root.u.def.value | |
8839 | + h->root.u.def.section->output_section->vma | |
8840 | + h->root.u.def.section->output_offset); | |
8841 | rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY); | |
8842 | rela.r_addend = 0; | |
4ce794b7 AM |
8843 | loc = htab->relbss->contents; |
8844 | loc += htab->relbss->reloc_count++ * sizeof (Elf64_External_Rela); | |
65f38f15 | 8845 | bfd_elf64_swap_reloca_out (output_bfd, &rela, loc); |
5bd4f169 AM |
8846 | } |
8847 | ||
5bd4f169 AM |
8848 | /* Mark some specially defined symbols as absolute. */ |
8849 | if (strcmp (h->root.root.string, "_DYNAMIC") == 0) | |
8850 | sym->st_shndx = SHN_ABS; | |
8851 | ||
b34976b6 | 8852 | return TRUE; |
5bd4f169 AM |
8853 | } |
8854 | ||
65f38f15 AM |
8855 | /* Used to decide how to sort relocs in an optimal manner for the |
8856 | dynamic linker, before writing them out. */ | |
8857 | ||
8858 | static enum elf_reloc_type_class | |
4ce794b7 | 8859 | ppc64_elf_reloc_type_class (const Elf_Internal_Rela *rela) |
65f38f15 | 8860 | { |
04c9666a | 8861 | enum elf_ppc64_reloc_type r_type; |
a33d1f77 | 8862 | |
4ce794b7 | 8863 | r_type = ELF64_R_TYPE (rela->r_info); |
a33d1f77 | 8864 | switch (r_type) |
65f38f15 AM |
8865 | { |
8866 | case R_PPC64_RELATIVE: | |
8867 | return reloc_class_relative; | |
8868 | case R_PPC64_JMP_SLOT: | |
8869 | return reloc_class_plt; | |
8870 | case R_PPC64_COPY: | |
8871 | return reloc_class_copy; | |
8872 | default: | |
8873 | return reloc_class_normal; | |
8874 | } | |
8875 | } | |
8876 | ||
5bd4f169 AM |
8877 | /* Finish up the dynamic sections. */ |
8878 | ||
b34976b6 | 8879 | static bfd_boolean |
4ce794b7 AM |
8880 | ppc64_elf_finish_dynamic_sections (bfd *output_bfd, |
8881 | struct bfd_link_info *info) | |
5bd4f169 | 8882 | { |
65f38f15 AM |
8883 | struct ppc_link_hash_table *htab; |
8884 | bfd *dynobj; | |
5bd4f169 | 8885 | asection *sdyn; |
5bd4f169 | 8886 | |
65f38f15 AM |
8887 | htab = ppc_hash_table (info); |
8888 | dynobj = htab->elf.dynobj; | |
5bd4f169 AM |
8889 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); |
8890 | ||
65f38f15 | 8891 | if (htab->elf.dynamic_sections_created) |
5bd4f169 | 8892 | { |
5bd4f169 AM |
8893 | Elf64_External_Dyn *dyncon, *dynconend; |
8894 | ||
4ce794b7 | 8895 | if (sdyn == NULL || htab->got == NULL) |
65f38f15 | 8896 | abort (); |
5bd4f169 AM |
8897 | |
8898 | dyncon = (Elf64_External_Dyn *) sdyn->contents; | |
eea6121a | 8899 | dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size); |
5bd4f169 AM |
8900 | for (; dyncon < dynconend; dyncon++) |
8901 | { | |
8902 | Elf_Internal_Dyn dyn; | |
19397422 | 8903 | asection *s; |
5bd4f169 AM |
8904 | |
8905 | bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn); | |
8906 | ||
8907 | switch (dyn.d_tag) | |
8908 | { | |
65f38f15 AM |
8909 | default: |
8910 | continue; | |
5bd4f169 | 8911 | |
5d1634d7 | 8912 | case DT_PPC64_GLINK: |
4ce794b7 | 8913 | s = htab->glink; |
6348e046 | 8914 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
ad8e1ba5 AM |
8915 | /* We stupidly defined DT_PPC64_GLINK to be the start |
8916 | of glink rather than the first entry point, which is | |
8917 | what ld.so needs, and now have a bigger stub to | |
8918 | support automatic multiple TOCs. */ | |
8919 | dyn.d_un.d_ptr += GLINK_CALL_STUB_SIZE - 32; | |
5d1634d7 AM |
8920 | break; |
8921 | ||
19397422 AM |
8922 | case DT_PPC64_OPD: |
8923 | s = bfd_get_section_by_name (output_bfd, ".opd"); | |
6348e046 AM |
8924 | if (s == NULL) |
8925 | continue; | |
8926 | dyn.d_un.d_ptr = s->vma; | |
19397422 AM |
8927 | break; |
8928 | ||
8929 | case DT_PPC64_OPDSZ: | |
8930 | s = bfd_get_section_by_name (output_bfd, ".opd"); | |
6348e046 AM |
8931 | if (s == NULL) |
8932 | continue; | |
eea6121a | 8933 | dyn.d_un.d_val = s->size; |
19397422 AM |
8934 | break; |
8935 | ||
65f38f15 | 8936 | case DT_PLTGOT: |
4ce794b7 | 8937 | s = htab->plt; |
6348e046 | 8938 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
65f38f15 AM |
8939 | break; |
8940 | ||
8941 | case DT_JMPREL: | |
4ce794b7 | 8942 | s = htab->relplt; |
6348e046 | 8943 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
65f38f15 | 8944 | break; |
5bd4f169 | 8945 | |
65f38f15 | 8946 | case DT_PLTRELSZ: |
eea6121a | 8947 | dyn.d_un.d_val = htab->relplt->size; |
5d1634d7 AM |
8948 | break; |
8949 | ||
8950 | case DT_RELASZ: | |
8951 | /* Don't count procedure linkage table relocs in the | |
8952 | overall reloc count. */ | |
4ce794b7 | 8953 | s = htab->relplt; |
6348e046 AM |
8954 | if (s == NULL) |
8955 | continue; | |
eea6121a | 8956 | dyn.d_un.d_val -= s->size; |
6348e046 AM |
8957 | break; |
8958 | ||
8959 | case DT_RELA: | |
8960 | /* We may not be using the standard ELF linker script. | |
8961 | If .rela.plt is the first .rela section, we adjust | |
8962 | DT_RELA to not include it. */ | |
4ce794b7 | 8963 | s = htab->relplt; |
6348e046 AM |
8964 | if (s == NULL) |
8965 | continue; | |
8966 | if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset) | |
8967 | continue; | |
eea6121a | 8968 | dyn.d_un.d_ptr += s->size; |
65f38f15 | 8969 | break; |
5bd4f169 | 8970 | } |
5bd4f169 | 8971 | |
65f38f15 | 8972 | bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); |
5bd4f169 | 8973 | } |
5bd4f169 AM |
8974 | } |
8975 | ||
eea6121a | 8976 | if (htab->got != NULL && htab->got->size != 0) |
5d1634d7 AM |
8977 | { |
8978 | /* Fill in the first entry in the global offset table. | |
8979 | We use it to hold the link-time TOCbase. */ | |
8980 | bfd_put_64 (output_bfd, | |
60ee0d4a | 8981 | elf_gp (output_bfd) + TOC_BASE_OFF, |
4ce794b7 | 8982 | htab->got->contents); |
5d1634d7 AM |
8983 | |
8984 | /* Set .got entry size. */ | |
4ce794b7 | 8985 | elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 8; |
5d1634d7 AM |
8986 | } |
8987 | ||
eea6121a | 8988 | if (htab->plt != NULL && htab->plt->size != 0) |
5d1634d7 AM |
8989 | { |
8990 | /* Set .plt entry size. */ | |
4ce794b7 | 8991 | elf_section_data (htab->plt->output_section)->this_hdr.sh_entsize |
5d1634d7 AM |
8992 | = PLT_ENTRY_SIZE; |
8993 | } | |
8994 | ||
e717da7e AM |
8995 | /* We need to handle writing out multiple GOT sections ourselves, |
8996 | since we didn't add them to DYNOBJ. */ | |
8997 | while ((dynobj = dynobj->link_next) != NULL) | |
8998 | { | |
8999 | asection *s; | |
9000 | s = ppc64_elf_tdata (dynobj)->got; | |
9001 | if (s != NULL | |
eea6121a | 9002 | && s->size != 0 |
e717da7e AM |
9003 | && s->output_section != bfd_abs_section_ptr |
9004 | && !bfd_set_section_contents (output_bfd, s->output_section, | |
9005 | s->contents, s->output_offset, | |
eea6121a | 9006 | s->size)) |
e717da7e AM |
9007 | return FALSE; |
9008 | s = ppc64_elf_tdata (dynobj)->relgot; | |
9009 | if (s != NULL | |
eea6121a | 9010 | && s->size != 0 |
e717da7e AM |
9011 | && s->output_section != bfd_abs_section_ptr |
9012 | && !bfd_set_section_contents (output_bfd, s->output_section, | |
9013 | s->contents, s->output_offset, | |
eea6121a | 9014 | s->size)) |
e717da7e AM |
9015 | return FALSE; |
9016 | } | |
f6c52c13 | 9017 | |
b34976b6 | 9018 | return TRUE; |
5bd4f169 AM |
9019 | } |
9020 | ||
5bd4f169 | 9021 | #include "elf64-target.h" |