Commit | Line | Data |
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5bd4f169 | 1 | /* PowerPC64-specific support for 64-bit ELF. |
86bbe32f | 2 | Copyright 1999, 2000, 2001, 2002, 2003 Free Software Foundation, Inc. |
5bd4f169 AM |
3 | Written by Linus Nordberg, Swox AB <info@swox.com>, |
4 | based on elf32-ppc.c by Ian Lance Taylor. | |
d37c89e5 | 5 | Largely rewritten by Alan Modra <amodra@bigpond.net.au> |
5bd4f169 | 6 | |
ae9a127f | 7 | This file is part of BFD, the Binary File Descriptor library. |
5bd4f169 | 8 | |
ae9a127f NC |
9 | This program is free software; you can redistribute it and/or modify |
10 | it under the terms of the GNU General Public License as published by | |
11 | the Free Software Foundation; either version 2 of the License, or | |
12 | (at your option) any later version. | |
5bd4f169 | 13 | |
ae9a127f NC |
14 | This program is distributed in the hope that it will be useful, |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
5bd4f169 | 18 | |
4ce794b7 AM |
19 | You should have received a copy of the GNU General Public License along |
20 | with this program; if not, write to the Free Software Foundation, Inc., | |
21 | 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ | |
5bd4f169 | 22 | |
4ce794b7 AM |
23 | /* The 64-bit PowerPC ELF ABI may be found at |
24 | http://www.linuxbase.org/spec/ELF/ppc64/PPC-elf64abi.txt, and | |
25 | http://www.linuxbase.org/spec/ELF/ppc64/spec/book1.html */ | |
5bd4f169 AM |
26 | |
27 | #include "bfd.h" | |
28 | #include "sysdep.h" | |
29 | #include "bfdlink.h" | |
30 | #include "libbfd.h" | |
31 | #include "elf-bfd.h" | |
04c9666a | 32 | #include "elf/ppc64.h" |
5d1634d7 | 33 | #include "elf64-ppc.h" |
5bd4f169 | 34 | |
805fc799 | 35 | static bfd_reloc_status_type ppc64_elf_ha_reloc |
4ce794b7 | 36 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
805fc799 | 37 | static bfd_reloc_status_type ppc64_elf_brtaken_reloc |
4ce794b7 | 38 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
805fc799 | 39 | static bfd_reloc_status_type ppc64_elf_sectoff_reloc |
4ce794b7 | 40 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
805fc799 | 41 | static bfd_reloc_status_type ppc64_elf_sectoff_ha_reloc |
4ce794b7 | 42 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
805fc799 | 43 | static bfd_reloc_status_type ppc64_elf_toc_reloc |
4ce794b7 | 44 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
805fc799 | 45 | static bfd_reloc_status_type ppc64_elf_toc_ha_reloc |
4ce794b7 | 46 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
805fc799 | 47 | static bfd_reloc_status_type ppc64_elf_toc64_reloc |
4ce794b7 | 48 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
805fc799 | 49 | static bfd_reloc_status_type ppc64_elf_unhandled_reloc |
4ce794b7 | 50 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
5bd4f169 AM |
51 | |
52 | ||
ad8e1ba5 AM |
53 | #define TARGET_LITTLE_SYM bfd_elf64_powerpcle_vec |
54 | #define TARGET_LITTLE_NAME "elf64-powerpcle" | |
55 | #define TARGET_BIG_SYM bfd_elf64_powerpc_vec | |
56 | #define TARGET_BIG_NAME "elf64-powerpc" | |
57 | #define ELF_ARCH bfd_arch_powerpc | |
58 | #define ELF_MACHINE_CODE EM_PPC64 | |
59 | #define ELF_MAXPAGESIZE 0x10000 | |
60 | #define elf_info_to_howto ppc64_elf_info_to_howto | |
61 | ||
62 | #define elf_backend_want_got_sym 0 | |
63 | #define elf_backend_want_plt_sym 0 | |
64 | #define elf_backend_plt_alignment 3 | |
65 | #define elf_backend_plt_not_loaded 1 | |
66 | #define elf_backend_got_symbol_offset 0 | |
67 | #define elf_backend_got_header_size 8 | |
ad8e1ba5 AM |
68 | #define elf_backend_can_gc_sections 1 |
69 | #define elf_backend_can_refcount 1 | |
70 | #define elf_backend_rela_normal 1 | |
71 | ||
e717da7e | 72 | #define bfd_elf64_mkobject ppc64_elf_mkobject |
ad8e1ba5 AM |
73 | #define bfd_elf64_bfd_reloc_type_lookup ppc64_elf_reloc_type_lookup |
74 | #define bfd_elf64_bfd_merge_private_bfd_data ppc64_elf_merge_private_bfd_data | |
75 | #define bfd_elf64_new_section_hook ppc64_elf_new_section_hook | |
76 | #define bfd_elf64_bfd_link_hash_table_create ppc64_elf_link_hash_table_create | |
77 | #define bfd_elf64_bfd_link_hash_table_free ppc64_elf_link_hash_table_free | |
78 | ||
79 | #define elf_backend_object_p ppc64_elf_object_p | |
d37c89e5 AM |
80 | #define elf_backend_grok_prstatus ppc64_elf_grok_prstatus |
81 | #define elf_backend_grok_psinfo ppc64_elf_grok_psinfo | |
ad8e1ba5 AM |
82 | #define elf_backend_create_dynamic_sections ppc64_elf_create_dynamic_sections |
83 | #define elf_backend_copy_indirect_symbol ppc64_elf_copy_indirect_symbol | |
84 | #define elf_backend_check_relocs ppc64_elf_check_relocs | |
85 | #define elf_backend_gc_mark_hook ppc64_elf_gc_mark_hook | |
86 | #define elf_backend_gc_sweep_hook ppc64_elf_gc_sweep_hook | |
87 | #define elf_backend_adjust_dynamic_symbol ppc64_elf_adjust_dynamic_symbol | |
88 | #define elf_backend_hide_symbol ppc64_elf_hide_symbol | |
89 | #define elf_backend_always_size_sections ppc64_elf_func_desc_adjust | |
90 | #define elf_backend_size_dynamic_sections ppc64_elf_size_dynamic_sections | |
91 | #define elf_backend_relocate_section ppc64_elf_relocate_section | |
92 | #define elf_backend_finish_dynamic_symbol ppc64_elf_finish_dynamic_symbol | |
93 | #define elf_backend_reloc_type_class ppc64_elf_reloc_type_class | |
94 | #define elf_backend_finish_dynamic_sections ppc64_elf_finish_dynamic_sections | |
754021d0 | 95 | #define elf_backend_link_output_symbol_hook ppc64_elf_output_symbol_hook |
2f89ff8d | 96 | #define elf_backend_special_sections ppc64_elf_special_sections |
ad8e1ba5 | 97 | |
5bd4f169 AM |
98 | /* The name of the dynamic interpreter. This is put in the .interp |
99 | section. */ | |
100 | #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1" | |
101 | ||
102 | /* The size in bytes of an entry in the procedure linkage table. */ | |
103 | #define PLT_ENTRY_SIZE 24 | |
104 | ||
105 | /* The initial size of the plt reserved for the dynamic linker. */ | |
5d1634d7 | 106 | #define PLT_INITIAL_ENTRY_SIZE PLT_ENTRY_SIZE |
5bd4f169 AM |
107 | |
108 | /* TOC base pointers offset from start of TOC. */ | |
411e1bfb AM |
109 | #define TOC_BASE_OFF 0x8000 |
110 | ||
111 | /* Offset of tp and dtp pointers from start of TLS block. */ | |
112 | #define TP_OFFSET 0x7000 | |
113 | #define DTP_OFFSET 0x8000 | |
5bd4f169 | 114 | |
ad8e1ba5 AM |
115 | /* .plt call stub instructions. The normal stub is like this, but |
116 | sometimes the .plt entry crosses a 64k boundary and we need to | |
117 | insert an addis to adjust r12. */ | |
118 | #define PLT_CALL_STUB_SIZE (7*4) | |
5d1634d7 AM |
119 | #define ADDIS_R12_R2 0x3d820000 /* addis %r12,%r2,xxx@ha */ |
120 | #define STD_R2_40R1 0xf8410028 /* std %r2,40(%r1) */ | |
121 | #define LD_R11_0R12 0xe96c0000 /* ld %r11,xxx+0@l(%r12) */ | |
122 | #define LD_R2_0R12 0xe84c0000 /* ld %r2,xxx+8@l(%r12) */ | |
123 | #define MTCTR_R11 0x7d6903a6 /* mtctr %r11 */ | |
124 | /* ld %r11,xxx+16@l(%r12) */ | |
125 | #define BCTR 0x4e800420 /* bctr */ | |
126 | ||
5d1634d7 | 127 | |
ad8e1ba5 AM |
128 | #define ADDIS_R2_R2 0x3c420000 /* addis %r2,%r2,off@ha */ |
129 | #define ADDI_R2_R2 0x38420000 /* addi %r2,%r2,off@l */ | |
130 | ||
131 | #define LD_R2_40R1 0xe8410028 /* ld %r2,40(%r1) */ | |
132 | ||
133 | /* glink call stub instructions. We enter with the index in R0, and the | |
134 | address of glink entry in CTR. From that, we can calculate PLT0. */ | |
135 | #define GLINK_CALL_STUB_SIZE (16*4) | |
136 | #define MFCTR_R12 0x7d8902a6 /* mfctr %r12 */ | |
137 | #define SLDI_R11_R0_3 0x780b1f24 /* sldi %r11,%r0,3 */ | |
138 | #define ADDIC_R2_R0_32K 0x34408000 /* addic. %r2,%r0,-32768 */ | |
139 | #define SUB_R12_R12_R11 0x7d8b6050 /* sub %r12,%r12,%r11 */ | |
140 | #define SRADI_R2_R2_63 0x7c42fe76 /* sradi %r2,%r2,63 */ | |
141 | #define SLDI_R11_R0_2 0x780b1764 /* sldi %r11,%r0,2 */ | |
142 | #define AND_R2_R2_R11 0x7c425838 /* and %r2,%r2,%r11 */ | |
143 | /* sub %r12,%r12,%r11 */ | |
144 | #define ADD_R12_R12_R2 0x7d8c1214 /* add %r12,%r12,%r2 */ | |
145 | #define ADDIS_R12_R12 0x3d8c0000 /* addis %r12,%r12,xxx@ha */ | |
146 | /* ld %r11,xxx@l(%r12) */ | |
147 | #define ADDI_R12_R12 0x398c0000 /* addi %r12,%r12,xxx@l */ | |
148 | /* ld %r2,8(%r12) */ | |
149 | /* mtctr %r11 */ | |
150 | /* ld %r11,16(%r12) */ | |
151 | /* bctr */ | |
5d1634d7 AM |
152 | |
153 | /* Pad with this. */ | |
154 | #define NOP 0x60000000 | |
155 | ||
721956f4 AM |
156 | /* Some other nops. */ |
157 | #define CROR_151515 0x4def7b82 | |
158 | #define CROR_313131 0x4ffffb82 | |
159 | ||
cedb70c5 | 160 | /* .glink entries for the first 32k functions are two instructions. */ |
5d1634d7 AM |
161 | #define LI_R0_0 0x38000000 /* li %r0,0 */ |
162 | #define B_DOT 0x48000000 /* b . */ | |
163 | ||
164 | /* After that, we need two instructions to load the index, followed by | |
165 | a branch. */ | |
166 | #define LIS_R0_0 0x3c000000 /* lis %r0,0 */ | |
10ed1bba | 167 | #define ORI_R0_R0_0 0x60000000 /* ori %r0,%r0,0 */ |
41bd81ab | 168 | |
82bd7b59 AM |
169 | /* Instructions to save and restore floating point regs. */ |
170 | #define STFD_FR0_0R1 0xd8010000 /* stfd %fr0,0(%r1) */ | |
171 | #define LFD_FR0_0R1 0xc8010000 /* lfd %fr0,0(%r1) */ | |
172 | #define BLR 0x4e800020 /* blr */ | |
173 | ||
41bd81ab AM |
174 | /* Since .opd is an array of descriptors and each entry will end up |
175 | with identical R_PPC64_RELATIVE relocs, there is really no need to | |
176 | propagate .opd relocs; The dynamic linker should be taught to | |
1e2f5b6e | 177 | relocate .opd without reloc entries. */ |
41bd81ab AM |
178 | #ifndef NO_OPD_RELOCS |
179 | #define NO_OPD_RELOCS 0 | |
180 | #endif | |
5bd4f169 | 181 | \f |
f5e87a1d | 182 | #define ONES(n) (((bfd_vma) 1 << ((n) - 1) << 1) - 1) |
b34976b6 | 183 | |
5bd4f169 | 184 | /* Relocation HOWTO's. */ |
04c9666a | 185 | static reloc_howto_type *ppc64_elf_howto_table[(int) R_PPC64_max]; |
5bd4f169 AM |
186 | |
187 | static reloc_howto_type ppc64_elf_howto_raw[] = { | |
188 | /* This reloc does nothing. */ | |
189 | HOWTO (R_PPC64_NONE, /* type */ | |
190 | 0, /* rightshift */ | |
411e1bfb AM |
191 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
192 | 32, /* bitsize */ | |
b34976b6 | 193 | FALSE, /* pc_relative */ |
5bd4f169 | 194 | 0, /* bitpos */ |
f5e87a1d | 195 | complain_overflow_dont, /* complain_on_overflow */ |
5bd4f169 AM |
196 | bfd_elf_generic_reloc, /* special_function */ |
197 | "R_PPC64_NONE", /* name */ | |
b34976b6 | 198 | FALSE, /* partial_inplace */ |
d006db6c | 199 | 0, /* src_mask */ |
5bd4f169 | 200 | 0, /* dst_mask */ |
b34976b6 | 201 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
202 | |
203 | /* A standard 32 bit relocation. */ | |
204 | HOWTO (R_PPC64_ADDR32, /* type */ | |
205 | 0, /* rightshift */ | |
206 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
207 | 32, /* bitsize */ | |
b34976b6 | 208 | FALSE, /* pc_relative */ |
5bd4f169 AM |
209 | 0, /* bitpos */ |
210 | complain_overflow_bitfield, /* complain_on_overflow */ | |
211 | bfd_elf_generic_reloc, /* special_function */ | |
212 | "R_PPC64_ADDR32", /* name */ | |
b34976b6 | 213 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
214 | 0, /* src_mask */ |
215 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 216 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
217 | |
218 | /* An absolute 26 bit branch; the lower two bits must be zero. | |
219 | FIXME: we don't check that, we just clear them. */ | |
220 | HOWTO (R_PPC64_ADDR24, /* type */ | |
221 | 0, /* rightshift */ | |
222 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
223 | 26, /* bitsize */ | |
b34976b6 | 224 | FALSE, /* pc_relative */ |
5bd4f169 AM |
225 | 0, /* bitpos */ |
226 | complain_overflow_bitfield, /* complain_on_overflow */ | |
227 | bfd_elf_generic_reloc, /* special_function */ | |
228 | "R_PPC64_ADDR24", /* name */ | |
b34976b6 | 229 | FALSE, /* partial_inplace */ |
d006db6c | 230 | 0, /* src_mask */ |
f5e87a1d | 231 | 0x03fffffc, /* dst_mask */ |
b34976b6 | 232 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
233 | |
234 | /* A standard 16 bit relocation. */ | |
235 | HOWTO (R_PPC64_ADDR16, /* type */ | |
236 | 0, /* rightshift */ | |
237 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
238 | 16, /* bitsize */ | |
b34976b6 | 239 | FALSE, /* pc_relative */ |
5bd4f169 AM |
240 | 0, /* bitpos */ |
241 | complain_overflow_bitfield, /* complain_on_overflow */ | |
242 | bfd_elf_generic_reloc, /* special_function */ | |
243 | "R_PPC64_ADDR16", /* name */ | |
b34976b6 | 244 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
245 | 0, /* src_mask */ |
246 | 0xffff, /* dst_mask */ | |
b34976b6 | 247 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
248 | |
249 | /* A 16 bit relocation without overflow. */ | |
250 | HOWTO (R_PPC64_ADDR16_LO, /* type */ | |
251 | 0, /* rightshift */ | |
252 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
253 | 16, /* bitsize */ | |
b34976b6 | 254 | FALSE, /* pc_relative */ |
5bd4f169 AM |
255 | 0, /* bitpos */ |
256 | complain_overflow_dont,/* complain_on_overflow */ | |
257 | bfd_elf_generic_reloc, /* special_function */ | |
258 | "R_PPC64_ADDR16_LO", /* name */ | |
b34976b6 | 259 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
260 | 0, /* src_mask */ |
261 | 0xffff, /* dst_mask */ | |
b34976b6 | 262 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
263 | |
264 | /* Bits 16-31 of an address. */ | |
265 | HOWTO (R_PPC64_ADDR16_HI, /* type */ | |
266 | 16, /* rightshift */ | |
267 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
268 | 16, /* bitsize */ | |
b34976b6 | 269 | FALSE, /* pc_relative */ |
5bd4f169 AM |
270 | 0, /* bitpos */ |
271 | complain_overflow_dont, /* complain_on_overflow */ | |
272 | bfd_elf_generic_reloc, /* special_function */ | |
273 | "R_PPC64_ADDR16_HI", /* name */ | |
b34976b6 | 274 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
275 | 0, /* src_mask */ |
276 | 0xffff, /* dst_mask */ | |
b34976b6 | 277 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
278 | |
279 | /* Bits 16-31 of an address, plus 1 if the contents of the low 16 | |
280 | bits, treated as a signed number, is negative. */ | |
281 | HOWTO (R_PPC64_ADDR16_HA, /* type */ | |
282 | 16, /* rightshift */ | |
283 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
284 | 16, /* bitsize */ | |
b34976b6 | 285 | FALSE, /* pc_relative */ |
5bd4f169 AM |
286 | 0, /* bitpos */ |
287 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 288 | ppc64_elf_ha_reloc, /* special_function */ |
5bd4f169 | 289 | "R_PPC64_ADDR16_HA", /* name */ |
b34976b6 | 290 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
291 | 0, /* src_mask */ |
292 | 0xffff, /* dst_mask */ | |
b34976b6 | 293 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
294 | |
295 | /* An absolute 16 bit branch; the lower two bits must be zero. | |
296 | FIXME: we don't check that, we just clear them. */ | |
297 | HOWTO (R_PPC64_ADDR14, /* type */ | |
298 | 0, /* rightshift */ | |
299 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
300 | 16, /* bitsize */ | |
b34976b6 | 301 | FALSE, /* pc_relative */ |
5bd4f169 AM |
302 | 0, /* bitpos */ |
303 | complain_overflow_bitfield, /* complain_on_overflow */ | |
304 | bfd_elf_generic_reloc, /* special_function */ | |
305 | "R_PPC64_ADDR14", /* name */ | |
b34976b6 | 306 | FALSE, /* partial_inplace */ |
d006db6c | 307 | 0, /* src_mask */ |
f5e87a1d | 308 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 309 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
310 | |
311 | /* An absolute 16 bit branch, for which bit 10 should be set to | |
312 | indicate that the branch is expected to be taken. The lower two | |
313 | bits must be zero. */ | |
314 | HOWTO (R_PPC64_ADDR14_BRTAKEN, /* type */ | |
315 | 0, /* rightshift */ | |
316 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
317 | 16, /* bitsize */ | |
b34976b6 | 318 | FALSE, /* pc_relative */ |
5bd4f169 AM |
319 | 0, /* bitpos */ |
320 | complain_overflow_bitfield, /* complain_on_overflow */ | |
805fc799 | 321 | ppc64_elf_brtaken_reloc, /* special_function */ |
5bd4f169 | 322 | "R_PPC64_ADDR14_BRTAKEN",/* name */ |
b34976b6 | 323 | FALSE, /* partial_inplace */ |
d006db6c | 324 | 0, /* src_mask */ |
f5e87a1d | 325 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 326 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
327 | |
328 | /* An absolute 16 bit branch, for which bit 10 should be set to | |
329 | indicate that the branch is not expected to be taken. The lower | |
330 | two bits must be zero. */ | |
331 | HOWTO (R_PPC64_ADDR14_BRNTAKEN, /* type */ | |
332 | 0, /* rightshift */ | |
333 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
334 | 16, /* bitsize */ | |
b34976b6 | 335 | FALSE, /* pc_relative */ |
5bd4f169 AM |
336 | 0, /* bitpos */ |
337 | complain_overflow_bitfield, /* complain_on_overflow */ | |
805fc799 | 338 | ppc64_elf_brtaken_reloc, /* special_function */ |
5bd4f169 | 339 | "R_PPC64_ADDR14_BRNTAKEN",/* name */ |
b34976b6 | 340 | FALSE, /* partial_inplace */ |
d006db6c | 341 | 0, /* src_mask */ |
f5e87a1d | 342 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 343 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
344 | |
345 | /* A relative 26 bit branch; the lower two bits must be zero. */ | |
346 | HOWTO (R_PPC64_REL24, /* type */ | |
347 | 0, /* rightshift */ | |
348 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
349 | 26, /* bitsize */ | |
b34976b6 | 350 | TRUE, /* pc_relative */ |
5bd4f169 AM |
351 | 0, /* bitpos */ |
352 | complain_overflow_signed, /* complain_on_overflow */ | |
353 | bfd_elf_generic_reloc, /* special_function */ | |
354 | "R_PPC64_REL24", /* name */ | |
b34976b6 | 355 | FALSE, /* partial_inplace */ |
d006db6c | 356 | 0, /* src_mask */ |
f5e87a1d | 357 | 0x03fffffc, /* dst_mask */ |
b34976b6 | 358 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
359 | |
360 | /* A relative 16 bit branch; the lower two bits must be zero. */ | |
361 | HOWTO (R_PPC64_REL14, /* type */ | |
362 | 0, /* rightshift */ | |
363 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
364 | 16, /* bitsize */ | |
b34976b6 | 365 | TRUE, /* pc_relative */ |
5bd4f169 AM |
366 | 0, /* bitpos */ |
367 | complain_overflow_signed, /* complain_on_overflow */ | |
368 | bfd_elf_generic_reloc, /* special_function */ | |
369 | "R_PPC64_REL14", /* name */ | |
b34976b6 | 370 | FALSE, /* partial_inplace */ |
d006db6c | 371 | 0, /* src_mask */ |
f5e87a1d | 372 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 373 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
374 | |
375 | /* A relative 16 bit branch. Bit 10 should be set to indicate that | |
376 | the branch is expected to be taken. The lower two bits must be | |
377 | zero. */ | |
378 | HOWTO (R_PPC64_REL14_BRTAKEN, /* type */ | |
379 | 0, /* rightshift */ | |
380 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
381 | 16, /* bitsize */ | |
b34976b6 | 382 | TRUE, /* pc_relative */ |
5bd4f169 AM |
383 | 0, /* bitpos */ |
384 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 385 | ppc64_elf_brtaken_reloc, /* special_function */ |
5bd4f169 | 386 | "R_PPC64_REL14_BRTAKEN", /* name */ |
b34976b6 | 387 | FALSE, /* partial_inplace */ |
d006db6c | 388 | 0, /* src_mask */ |
f5e87a1d | 389 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 390 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
391 | |
392 | /* A relative 16 bit branch. Bit 10 should be set to indicate that | |
393 | the branch is not expected to be taken. The lower two bits must | |
394 | be zero. */ | |
395 | HOWTO (R_PPC64_REL14_BRNTAKEN, /* type */ | |
396 | 0, /* rightshift */ | |
397 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
398 | 16, /* bitsize */ | |
b34976b6 | 399 | TRUE, /* pc_relative */ |
5bd4f169 AM |
400 | 0, /* bitpos */ |
401 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 402 | ppc64_elf_brtaken_reloc, /* special_function */ |
5bd4f169 | 403 | "R_PPC64_REL14_BRNTAKEN",/* name */ |
b34976b6 | 404 | FALSE, /* partial_inplace */ |
d006db6c | 405 | 0, /* src_mask */ |
f5e87a1d | 406 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 407 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
408 | |
409 | /* Like R_PPC64_ADDR16, but referring to the GOT table entry for the | |
410 | symbol. */ | |
411 | HOWTO (R_PPC64_GOT16, /* type */ | |
412 | 0, /* rightshift */ | |
413 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
414 | 16, /* bitsize */ | |
b34976b6 | 415 | FALSE, /* pc_relative */ |
5bd4f169 AM |
416 | 0, /* bitpos */ |
417 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 418 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 419 | "R_PPC64_GOT16", /* name */ |
b34976b6 | 420 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
421 | 0, /* src_mask */ |
422 | 0xffff, /* dst_mask */ | |
b34976b6 | 423 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
424 | |
425 | /* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for | |
426 | the symbol. */ | |
427 | HOWTO (R_PPC64_GOT16_LO, /* type */ | |
428 | 0, /* rightshift */ | |
429 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
430 | 16, /* bitsize */ | |
b34976b6 | 431 | FALSE, /* pc_relative */ |
5bd4f169 AM |
432 | 0, /* bitpos */ |
433 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 434 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 435 | "R_PPC64_GOT16_LO", /* name */ |
b34976b6 | 436 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
437 | 0, /* src_mask */ |
438 | 0xffff, /* dst_mask */ | |
b34976b6 | 439 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
440 | |
441 | /* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for | |
442 | the symbol. */ | |
443 | HOWTO (R_PPC64_GOT16_HI, /* type */ | |
444 | 16, /* rightshift */ | |
445 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
446 | 16, /* bitsize */ | |
b34976b6 | 447 | FALSE, /* pc_relative */ |
5bd4f169 AM |
448 | 0, /* bitpos */ |
449 | complain_overflow_dont,/* complain_on_overflow */ | |
805fc799 | 450 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 451 | "R_PPC64_GOT16_HI", /* name */ |
b34976b6 | 452 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
453 | 0, /* src_mask */ |
454 | 0xffff, /* dst_mask */ | |
b34976b6 | 455 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
456 | |
457 | /* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for | |
458 | the symbol. */ | |
459 | HOWTO (R_PPC64_GOT16_HA, /* type */ | |
460 | 16, /* rightshift */ | |
461 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
462 | 16, /* bitsize */ | |
b34976b6 | 463 | FALSE, /* pc_relative */ |
5bd4f169 AM |
464 | 0, /* bitpos */ |
465 | complain_overflow_dont,/* complain_on_overflow */ | |
805fc799 | 466 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 467 | "R_PPC64_GOT16_HA", /* name */ |
b34976b6 | 468 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
469 | 0, /* src_mask */ |
470 | 0xffff, /* dst_mask */ | |
b34976b6 | 471 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
472 | |
473 | /* This is used only by the dynamic linker. The symbol should exist | |
474 | both in the object being run and in some shared library. The | |
475 | dynamic linker copies the data addressed by the symbol from the | |
476 | shared library into the object, because the object being | |
477 | run has to have the data at some particular address. */ | |
478 | HOWTO (R_PPC64_COPY, /* type */ | |
479 | 0, /* rightshift */ | |
f5e87a1d AM |
480 | 0, /* this one is variable size */ |
481 | 0, /* bitsize */ | |
b34976b6 | 482 | FALSE, /* pc_relative */ |
5bd4f169 | 483 | 0, /* bitpos */ |
f5e87a1d AM |
484 | complain_overflow_dont, /* complain_on_overflow */ |
485 | ppc64_elf_unhandled_reloc, /* special_function */ | |
5bd4f169 | 486 | "R_PPC64_COPY", /* name */ |
b34976b6 | 487 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
488 | 0, /* src_mask */ |
489 | 0, /* dst_mask */ | |
b34976b6 | 490 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
491 | |
492 | /* Like R_PPC64_ADDR64, but used when setting global offset table | |
493 | entries. */ | |
494 | HOWTO (R_PPC64_GLOB_DAT, /* type */ | |
495 | 0, /* rightshift */ | |
496 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
497 | 64, /* bitsize */ | |
b34976b6 | 498 | FALSE, /* pc_relative */ |
5bd4f169 AM |
499 | 0, /* bitpos */ |
500 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 501 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 502 | "R_PPC64_GLOB_DAT", /* name */ |
b34976b6 | 503 | FALSE, /* partial_inplace */ |
5bd4f169 | 504 | 0, /* src_mask */ |
f5e87a1d | 505 | ONES (64), /* dst_mask */ |
b34976b6 | 506 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
507 | |
508 | /* Created by the link editor. Marks a procedure linkage table | |
509 | entry for a symbol. */ | |
510 | HOWTO (R_PPC64_JMP_SLOT, /* type */ | |
511 | 0, /* rightshift */ | |
512 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
513 | 0, /* bitsize */ | |
b34976b6 | 514 | FALSE, /* pc_relative */ |
5bd4f169 AM |
515 | 0, /* bitpos */ |
516 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 517 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 518 | "R_PPC64_JMP_SLOT", /* name */ |
b34976b6 | 519 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
520 | 0, /* src_mask */ |
521 | 0, /* dst_mask */ | |
b34976b6 | 522 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
523 | |
524 | /* Used only by the dynamic linker. When the object is run, this | |
525 | doubleword64 is set to the load address of the object, plus the | |
526 | addend. */ | |
527 | HOWTO (R_PPC64_RELATIVE, /* type */ | |
528 | 0, /* rightshift */ | |
529 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
530 | 64, /* bitsize */ | |
b34976b6 | 531 | FALSE, /* pc_relative */ |
5bd4f169 AM |
532 | 0, /* bitpos */ |
533 | complain_overflow_dont, /* complain_on_overflow */ | |
534 | bfd_elf_generic_reloc, /* special_function */ | |
535 | "R_PPC64_RELATIVE", /* name */ | |
b34976b6 | 536 | FALSE, /* partial_inplace */ |
5bd4f169 | 537 | 0, /* src_mask */ |
f5e87a1d | 538 | ONES (64), /* dst_mask */ |
b34976b6 | 539 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
540 | |
541 | /* Like R_PPC64_ADDR32, but may be unaligned. */ | |
542 | HOWTO (R_PPC64_UADDR32, /* type */ | |
543 | 0, /* rightshift */ | |
544 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
545 | 32, /* bitsize */ | |
b34976b6 | 546 | FALSE, /* pc_relative */ |
5bd4f169 AM |
547 | 0, /* bitpos */ |
548 | complain_overflow_bitfield, /* complain_on_overflow */ | |
549 | bfd_elf_generic_reloc, /* special_function */ | |
550 | "R_PPC64_UADDR32", /* name */ | |
b34976b6 | 551 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
552 | 0, /* src_mask */ |
553 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 554 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
555 | |
556 | /* Like R_PPC64_ADDR16, but may be unaligned. */ | |
557 | HOWTO (R_PPC64_UADDR16, /* type */ | |
558 | 0, /* rightshift */ | |
559 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
560 | 16, /* bitsize */ | |
b34976b6 | 561 | FALSE, /* pc_relative */ |
5bd4f169 AM |
562 | 0, /* bitpos */ |
563 | complain_overflow_bitfield, /* complain_on_overflow */ | |
564 | bfd_elf_generic_reloc, /* special_function */ | |
565 | "R_PPC64_UADDR16", /* name */ | |
b34976b6 | 566 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
567 | 0, /* src_mask */ |
568 | 0xffff, /* dst_mask */ | |
b34976b6 | 569 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
570 | |
571 | /* 32-bit PC relative. */ | |
572 | HOWTO (R_PPC64_REL32, /* type */ | |
573 | 0, /* rightshift */ | |
574 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
575 | 32, /* bitsize */ | |
b34976b6 | 576 | TRUE, /* pc_relative */ |
5bd4f169 | 577 | 0, /* bitpos */ |
cedb70c5 | 578 | /* FIXME: Verify. Was complain_overflow_bitfield. */ |
5bd4f169 AM |
579 | complain_overflow_signed, /* complain_on_overflow */ |
580 | bfd_elf_generic_reloc, /* special_function */ | |
581 | "R_PPC64_REL32", /* name */ | |
b34976b6 | 582 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
583 | 0, /* src_mask */ |
584 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 585 | TRUE), /* pcrel_offset */ |
5bd4f169 | 586 | |
10ed1bba | 587 | /* 32-bit relocation to the symbol's procedure linkage table. */ |
5bd4f169 AM |
588 | HOWTO (R_PPC64_PLT32, /* type */ |
589 | 0, /* rightshift */ | |
590 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
591 | 32, /* bitsize */ | |
b34976b6 | 592 | FALSE, /* pc_relative */ |
5bd4f169 AM |
593 | 0, /* bitpos */ |
594 | complain_overflow_bitfield, /* complain_on_overflow */ | |
805fc799 | 595 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 596 | "R_PPC64_PLT32", /* name */ |
b34976b6 | 597 | FALSE, /* partial_inplace */ |
5bd4f169 | 598 | 0, /* src_mask */ |
f5e87a1d | 599 | 0xffffffff, /* dst_mask */ |
b34976b6 | 600 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
601 | |
602 | /* 32-bit PC relative relocation to the symbol's procedure linkage table. | |
603 | FIXME: R_PPC64_PLTREL32 not supported. */ | |
604 | HOWTO (R_PPC64_PLTREL32, /* type */ | |
605 | 0, /* rightshift */ | |
606 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
607 | 32, /* bitsize */ | |
b34976b6 | 608 | TRUE, /* pc_relative */ |
5bd4f169 AM |
609 | 0, /* bitpos */ |
610 | complain_overflow_signed, /* complain_on_overflow */ | |
611 | bfd_elf_generic_reloc, /* special_function */ | |
612 | "R_PPC64_PLTREL32", /* name */ | |
b34976b6 | 613 | FALSE, /* partial_inplace */ |
5bd4f169 | 614 | 0, /* src_mask */ |
f5e87a1d | 615 | 0xffffffff, /* dst_mask */ |
b34976b6 | 616 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
617 | |
618 | /* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for | |
619 | the symbol. */ | |
620 | HOWTO (R_PPC64_PLT16_LO, /* type */ | |
621 | 0, /* rightshift */ | |
622 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
623 | 16, /* bitsize */ | |
b34976b6 | 624 | FALSE, /* pc_relative */ |
5bd4f169 AM |
625 | 0, /* bitpos */ |
626 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 627 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 628 | "R_PPC64_PLT16_LO", /* name */ |
b34976b6 | 629 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
630 | 0, /* src_mask */ |
631 | 0xffff, /* dst_mask */ | |
b34976b6 | 632 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
633 | |
634 | /* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for | |
635 | the symbol. */ | |
636 | HOWTO (R_PPC64_PLT16_HI, /* type */ | |
637 | 16, /* rightshift */ | |
638 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
639 | 16, /* bitsize */ | |
b34976b6 | 640 | FALSE, /* pc_relative */ |
5bd4f169 AM |
641 | 0, /* bitpos */ |
642 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 643 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 644 | "R_PPC64_PLT16_HI", /* name */ |
b34976b6 | 645 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
646 | 0, /* src_mask */ |
647 | 0xffff, /* dst_mask */ | |
b34976b6 | 648 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
649 | |
650 | /* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for | |
651 | the symbol. */ | |
652 | HOWTO (R_PPC64_PLT16_HA, /* type */ | |
653 | 16, /* rightshift */ | |
654 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
655 | 16, /* bitsize */ | |
b34976b6 | 656 | FALSE, /* pc_relative */ |
5bd4f169 AM |
657 | 0, /* bitpos */ |
658 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 659 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 660 | "R_PPC64_PLT16_HA", /* name */ |
b34976b6 | 661 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
662 | 0, /* src_mask */ |
663 | 0xffff, /* dst_mask */ | |
b34976b6 | 664 | FALSE), /* pcrel_offset */ |
5bd4f169 | 665 | |
c061c2d8 | 666 | /* 16-bit section relative relocation. */ |
5bd4f169 AM |
667 | HOWTO (R_PPC64_SECTOFF, /* type */ |
668 | 0, /* rightshift */ | |
c061c2d8 AM |
669 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
670 | 16, /* bitsize */ | |
b34976b6 | 671 | FALSE, /* pc_relative */ |
5bd4f169 AM |
672 | 0, /* bitpos */ |
673 | complain_overflow_bitfield, /* complain_on_overflow */ | |
805fc799 | 674 | ppc64_elf_sectoff_reloc, /* special_function */ |
5bd4f169 | 675 | "R_PPC64_SECTOFF", /* name */ |
b34976b6 | 676 | FALSE, /* partial_inplace */ |
5bd4f169 | 677 | 0, /* src_mask */ |
c061c2d8 | 678 | 0xffff, /* dst_mask */ |
b34976b6 | 679 | FALSE), /* pcrel_offset */ |
5bd4f169 | 680 | |
c061c2d8 | 681 | /* Like R_PPC64_SECTOFF, but no overflow warning. */ |
5bd4f169 AM |
682 | HOWTO (R_PPC64_SECTOFF_LO, /* type */ |
683 | 0, /* rightshift */ | |
684 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
685 | 16, /* bitsize */ | |
b34976b6 | 686 | FALSE, /* pc_relative */ |
5bd4f169 AM |
687 | 0, /* bitpos */ |
688 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 689 | ppc64_elf_sectoff_reloc, /* special_function */ |
5bd4f169 | 690 | "R_PPC64_SECTOFF_LO", /* name */ |
b34976b6 | 691 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
692 | 0, /* src_mask */ |
693 | 0xffff, /* dst_mask */ | |
b34976b6 | 694 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
695 | |
696 | /* 16-bit upper half section relative relocation. */ | |
697 | HOWTO (R_PPC64_SECTOFF_HI, /* type */ | |
698 | 16, /* rightshift */ | |
699 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
700 | 16, /* bitsize */ | |
b34976b6 | 701 | FALSE, /* pc_relative */ |
5bd4f169 AM |
702 | 0, /* bitpos */ |
703 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 704 | ppc64_elf_sectoff_reloc, /* special_function */ |
5bd4f169 | 705 | "R_PPC64_SECTOFF_HI", /* name */ |
b34976b6 | 706 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
707 | 0, /* src_mask */ |
708 | 0xffff, /* dst_mask */ | |
b34976b6 | 709 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
710 | |
711 | /* 16-bit upper half adjusted section relative relocation. */ | |
712 | HOWTO (R_PPC64_SECTOFF_HA, /* type */ | |
713 | 16, /* rightshift */ | |
714 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
715 | 16, /* bitsize */ | |
b34976b6 | 716 | FALSE, /* pc_relative */ |
5bd4f169 AM |
717 | 0, /* bitpos */ |
718 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 719 | ppc64_elf_sectoff_ha_reloc, /* special_function */ |
5bd4f169 | 720 | "R_PPC64_SECTOFF_HA", /* name */ |
b34976b6 | 721 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
722 | 0, /* src_mask */ |
723 | 0xffff, /* dst_mask */ | |
b34976b6 | 724 | FALSE), /* pcrel_offset */ |
5bd4f169 | 725 | |
04c9666a AM |
726 | /* Like R_PPC64_REL24 without touching the two least significant bits. */ |
727 | HOWTO (R_PPC64_REL30, /* type */ | |
5bd4f169 AM |
728 | 2, /* rightshift */ |
729 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
730 | 30, /* bitsize */ | |
b34976b6 | 731 | TRUE, /* pc_relative */ |
5bd4f169 AM |
732 | 0, /* bitpos */ |
733 | complain_overflow_dont, /* complain_on_overflow */ | |
734 | bfd_elf_generic_reloc, /* special_function */ | |
04c9666a | 735 | "R_PPC64_REL30", /* name */ |
b34976b6 | 736 | FALSE, /* partial_inplace */ |
d006db6c | 737 | 0, /* src_mask */ |
5bd4f169 | 738 | 0xfffffffc, /* dst_mask */ |
b34976b6 | 739 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
740 | |
741 | /* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */ | |
742 | ||
743 | /* A standard 64-bit relocation. */ | |
744 | HOWTO (R_PPC64_ADDR64, /* type */ | |
745 | 0, /* rightshift */ | |
746 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
747 | 64, /* bitsize */ | |
b34976b6 | 748 | FALSE, /* pc_relative */ |
5bd4f169 AM |
749 | 0, /* bitpos */ |
750 | complain_overflow_dont, /* complain_on_overflow */ | |
751 | bfd_elf_generic_reloc, /* special_function */ | |
752 | "R_PPC64_ADDR64", /* name */ | |
b34976b6 | 753 | FALSE, /* partial_inplace */ |
5bd4f169 | 754 | 0, /* src_mask */ |
f5e87a1d | 755 | ONES (64), /* dst_mask */ |
b34976b6 | 756 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
757 | |
758 | /* The bits 32-47 of an address. */ | |
759 | HOWTO (R_PPC64_ADDR16_HIGHER, /* type */ | |
760 | 32, /* rightshift */ | |
761 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
762 | 16, /* bitsize */ | |
b34976b6 | 763 | FALSE, /* pc_relative */ |
5bd4f169 AM |
764 | 0, /* bitpos */ |
765 | complain_overflow_dont, /* complain_on_overflow */ | |
766 | bfd_elf_generic_reloc, /* special_function */ | |
767 | "R_PPC64_ADDR16_HIGHER", /* name */ | |
b34976b6 | 768 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
769 | 0, /* src_mask */ |
770 | 0xffff, /* dst_mask */ | |
b34976b6 | 771 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
772 | |
773 | /* The bits 32-47 of an address, plus 1 if the contents of the low | |
774 | 16 bits, treated as a signed number, is negative. */ | |
775 | HOWTO (R_PPC64_ADDR16_HIGHERA, /* type */ | |
776 | 32, /* rightshift */ | |
777 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
778 | 16, /* bitsize */ | |
b34976b6 | 779 | FALSE, /* pc_relative */ |
5bd4f169 AM |
780 | 0, /* bitpos */ |
781 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 782 | ppc64_elf_ha_reloc, /* special_function */ |
5bd4f169 | 783 | "R_PPC64_ADDR16_HIGHERA", /* name */ |
b34976b6 | 784 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
785 | 0, /* src_mask */ |
786 | 0xffff, /* dst_mask */ | |
b34976b6 | 787 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
788 | |
789 | /* The bits 48-63 of an address. */ | |
790 | HOWTO (R_PPC64_ADDR16_HIGHEST,/* type */ | |
791 | 48, /* rightshift */ | |
792 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
793 | 16, /* bitsize */ | |
b34976b6 | 794 | FALSE, /* pc_relative */ |
5bd4f169 AM |
795 | 0, /* bitpos */ |
796 | complain_overflow_dont, /* complain_on_overflow */ | |
797 | bfd_elf_generic_reloc, /* special_function */ | |
798 | "R_PPC64_ADDR16_HIGHEST", /* name */ | |
b34976b6 | 799 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
800 | 0, /* src_mask */ |
801 | 0xffff, /* dst_mask */ | |
b34976b6 | 802 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
803 | |
804 | /* The bits 48-63 of an address, plus 1 if the contents of the low | |
805 | 16 bits, treated as a signed number, is negative. */ | |
806 | HOWTO (R_PPC64_ADDR16_HIGHESTA,/* type */ | |
807 | 48, /* rightshift */ | |
808 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
809 | 16, /* bitsize */ | |
b34976b6 | 810 | FALSE, /* pc_relative */ |
5bd4f169 AM |
811 | 0, /* bitpos */ |
812 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 813 | ppc64_elf_ha_reloc, /* special_function */ |
5bd4f169 | 814 | "R_PPC64_ADDR16_HIGHESTA", /* name */ |
b34976b6 | 815 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
816 | 0, /* src_mask */ |
817 | 0xffff, /* dst_mask */ | |
b34976b6 | 818 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
819 | |
820 | /* Like ADDR64, but may be unaligned. */ | |
821 | HOWTO (R_PPC64_UADDR64, /* type */ | |
822 | 0, /* rightshift */ | |
823 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
824 | 64, /* bitsize */ | |
b34976b6 | 825 | FALSE, /* pc_relative */ |
5bd4f169 AM |
826 | 0, /* bitpos */ |
827 | complain_overflow_dont, /* complain_on_overflow */ | |
828 | bfd_elf_generic_reloc, /* special_function */ | |
829 | "R_PPC64_UADDR64", /* name */ | |
b34976b6 | 830 | FALSE, /* partial_inplace */ |
5bd4f169 | 831 | 0, /* src_mask */ |
f5e87a1d | 832 | ONES (64), /* dst_mask */ |
b34976b6 | 833 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
834 | |
835 | /* 64-bit relative relocation. */ | |
836 | HOWTO (R_PPC64_REL64, /* type */ | |
837 | 0, /* rightshift */ | |
838 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
839 | 64, /* bitsize */ | |
b34976b6 | 840 | TRUE, /* pc_relative */ |
5bd4f169 AM |
841 | 0, /* bitpos */ |
842 | complain_overflow_dont, /* complain_on_overflow */ | |
843 | bfd_elf_generic_reloc, /* special_function */ | |
844 | "R_PPC64_REL64", /* name */ | |
b34976b6 | 845 | FALSE, /* partial_inplace */ |
5bd4f169 | 846 | 0, /* src_mask */ |
f5e87a1d | 847 | ONES (64), /* dst_mask */ |
b34976b6 | 848 | TRUE), /* pcrel_offset */ |
5bd4f169 | 849 | |
cedb70c5 | 850 | /* 64-bit relocation to the symbol's procedure linkage table. */ |
5bd4f169 AM |
851 | HOWTO (R_PPC64_PLT64, /* type */ |
852 | 0, /* rightshift */ | |
853 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
854 | 64, /* bitsize */ | |
b34976b6 | 855 | FALSE, /* pc_relative */ |
5bd4f169 AM |
856 | 0, /* bitpos */ |
857 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 858 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 859 | "R_PPC64_PLT64", /* name */ |
b34976b6 | 860 | FALSE, /* partial_inplace */ |
5bd4f169 | 861 | 0, /* src_mask */ |
f5e87a1d | 862 | ONES (64), /* dst_mask */ |
b34976b6 | 863 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
864 | |
865 | /* 64-bit PC relative relocation to the symbol's procedure linkage | |
866 | table. */ | |
867 | /* FIXME: R_PPC64_PLTREL64 not supported. */ | |
868 | HOWTO (R_PPC64_PLTREL64, /* type */ | |
869 | 0, /* rightshift */ | |
870 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
871 | 64, /* bitsize */ | |
b34976b6 | 872 | TRUE, /* pc_relative */ |
5bd4f169 AM |
873 | 0, /* bitpos */ |
874 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 875 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 876 | "R_PPC64_PLTREL64", /* name */ |
b34976b6 | 877 | FALSE, /* partial_inplace */ |
5bd4f169 | 878 | 0, /* src_mask */ |
f5e87a1d | 879 | ONES (64), /* dst_mask */ |
b34976b6 | 880 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
881 | |
882 | /* 16 bit TOC-relative relocation. */ | |
883 | ||
884 | /* R_PPC64_TOC16 47 half16* S + A - .TOC. */ | |
885 | HOWTO (R_PPC64_TOC16, /* type */ | |
886 | 0, /* rightshift */ | |
887 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
888 | 16, /* bitsize */ | |
b34976b6 | 889 | FALSE, /* pc_relative */ |
5bd4f169 AM |
890 | 0, /* bitpos */ |
891 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 892 | ppc64_elf_toc_reloc, /* special_function */ |
5bd4f169 | 893 | "R_PPC64_TOC16", /* name */ |
b34976b6 | 894 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
895 | 0, /* src_mask */ |
896 | 0xffff, /* dst_mask */ | |
b34976b6 | 897 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
898 | |
899 | /* 16 bit TOC-relative relocation without overflow. */ | |
900 | ||
901 | /* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */ | |
902 | HOWTO (R_PPC64_TOC16_LO, /* type */ | |
903 | 0, /* rightshift */ | |
904 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
905 | 16, /* bitsize */ | |
b34976b6 | 906 | FALSE, /* pc_relative */ |
5bd4f169 AM |
907 | 0, /* bitpos */ |
908 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 909 | ppc64_elf_toc_reloc, /* special_function */ |
5bd4f169 | 910 | "R_PPC64_TOC16_LO", /* name */ |
b34976b6 | 911 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
912 | 0, /* src_mask */ |
913 | 0xffff, /* dst_mask */ | |
b34976b6 | 914 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
915 | |
916 | /* 16 bit TOC-relative relocation, high 16 bits. */ | |
917 | ||
918 | /* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */ | |
919 | HOWTO (R_PPC64_TOC16_HI, /* type */ | |
920 | 16, /* rightshift */ | |
921 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
922 | 16, /* bitsize */ | |
b34976b6 | 923 | FALSE, /* pc_relative */ |
5bd4f169 AM |
924 | 0, /* bitpos */ |
925 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 926 | ppc64_elf_toc_reloc, /* special_function */ |
5bd4f169 | 927 | "R_PPC64_TOC16_HI", /* name */ |
b34976b6 | 928 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
929 | 0, /* src_mask */ |
930 | 0xffff, /* dst_mask */ | |
b34976b6 | 931 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
932 | |
933 | /* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the | |
934 | contents of the low 16 bits, treated as a signed number, is | |
935 | negative. */ | |
936 | ||
937 | /* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */ | |
938 | HOWTO (R_PPC64_TOC16_HA, /* type */ | |
939 | 16, /* rightshift */ | |
940 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
941 | 16, /* bitsize */ | |
b34976b6 | 942 | FALSE, /* pc_relative */ |
5bd4f169 AM |
943 | 0, /* bitpos */ |
944 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 945 | ppc64_elf_toc_ha_reloc, /* special_function */ |
5bd4f169 | 946 | "R_PPC64_TOC16_HA", /* name */ |
b34976b6 | 947 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
948 | 0, /* src_mask */ |
949 | 0xffff, /* dst_mask */ | |
b34976b6 | 950 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
951 | |
952 | /* 64-bit relocation; insert value of TOC base (.TOC.). */ | |
953 | ||
954 | /* R_PPC64_TOC 51 doubleword64 .TOC. */ | |
955 | HOWTO (R_PPC64_TOC, /* type */ | |
956 | 0, /* rightshift */ | |
957 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
958 | 64, /* bitsize */ | |
b34976b6 | 959 | FALSE, /* pc_relative */ |
5bd4f169 AM |
960 | 0, /* bitpos */ |
961 | complain_overflow_bitfield, /* complain_on_overflow */ | |
805fc799 | 962 | ppc64_elf_toc64_reloc, /* special_function */ |
5bd4f169 | 963 | "R_PPC64_TOC", /* name */ |
b34976b6 | 964 | FALSE, /* partial_inplace */ |
5bd4f169 | 965 | 0, /* src_mask */ |
f5e87a1d | 966 | ONES (64), /* dst_mask */ |
b34976b6 | 967 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
968 | |
969 | /* Like R_PPC64_GOT16, but also informs the link editor that the | |
970 | value to relocate may (!) refer to a PLT entry which the link | |
971 | editor (a) may replace with the symbol value. If the link editor | |
972 | is unable to fully resolve the symbol, it may (b) create a PLT | |
973 | entry and store the address to the new PLT entry in the GOT. | |
974 | This permits lazy resolution of function symbols at run time. | |
975 | The link editor may also skip all of this and just (c) emit a | |
976 | R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */ | |
977 | /* FIXME: R_PPC64_PLTGOT16 not implemented. */ | |
978 | HOWTO (R_PPC64_PLTGOT16, /* type */ | |
979 | 0, /* rightshift */ | |
980 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
981 | 16, /* bitsize */ | |
b34976b6 | 982 | FALSE, /* pc_relative */ |
5bd4f169 AM |
983 | 0, /* bitpos */ |
984 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 985 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb AM |
986 | "R_PPC64_PLTGOT16", /* name */ |
987 | FALSE, /* partial_inplace */ | |
988 | 0, /* src_mask */ | |
989 | 0xffff, /* dst_mask */ | |
990 | FALSE), /* pcrel_offset */ | |
991 | ||
992 | /* Like R_PPC64_PLTGOT16, but without overflow. */ | |
993 | /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */ | |
994 | HOWTO (R_PPC64_PLTGOT16_LO, /* type */ | |
995 | 0, /* rightshift */ | |
996 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
997 | 16, /* bitsize */ | |
998 | FALSE, /* pc_relative */ | |
999 | 0, /* bitpos */ | |
1000 | complain_overflow_dont, /* complain_on_overflow */ | |
1001 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1002 | "R_PPC64_PLTGOT16_LO", /* name */ | |
1003 | FALSE, /* partial_inplace */ | |
1004 | 0, /* src_mask */ | |
1005 | 0xffff, /* dst_mask */ | |
1006 | FALSE), /* pcrel_offset */ | |
1007 | ||
1008 | /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */ | |
1009 | /* FIXME: R_PPC64_PLTGOT16_HI not implemented. */ | |
1010 | HOWTO (R_PPC64_PLTGOT16_HI, /* type */ | |
1011 | 16, /* rightshift */ | |
1012 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1013 | 16, /* bitsize */ | |
1014 | FALSE, /* pc_relative */ | |
1015 | 0, /* bitpos */ | |
1016 | complain_overflow_dont, /* complain_on_overflow */ | |
1017 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1018 | "R_PPC64_PLTGOT16_HI", /* name */ | |
1019 | FALSE, /* partial_inplace */ | |
1020 | 0, /* src_mask */ | |
1021 | 0xffff, /* dst_mask */ | |
1022 | FALSE), /* pcrel_offset */ | |
1023 | ||
1024 | /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus | |
1025 | 1 if the contents of the low 16 bits, treated as a signed number, | |
1026 | is negative. */ | |
1027 | /* FIXME: R_PPC64_PLTGOT16_HA not implemented. */ | |
1028 | HOWTO (R_PPC64_PLTGOT16_HA, /* type */ | |
1029 | 16, /* rightshift */ | |
1030 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1031 | 16, /* bitsize */ | |
1032 | FALSE, /* pc_relative */ | |
1033 | 0, /* bitpos */ | |
1034 | complain_overflow_dont,/* complain_on_overflow */ | |
1035 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1036 | "R_PPC64_PLTGOT16_HA", /* name */ | |
1037 | FALSE, /* partial_inplace */ | |
1038 | 0, /* src_mask */ | |
1039 | 0xffff, /* dst_mask */ | |
1040 | FALSE), /* pcrel_offset */ | |
1041 | ||
1042 | /* Like R_PPC64_ADDR16, but for instructions with a DS field. */ | |
1043 | HOWTO (R_PPC64_ADDR16_DS, /* type */ | |
1044 | 0, /* rightshift */ | |
1045 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1046 | 16, /* bitsize */ | |
1047 | FALSE, /* pc_relative */ | |
1048 | 0, /* bitpos */ | |
1049 | complain_overflow_bitfield, /* complain_on_overflow */ | |
1050 | bfd_elf_generic_reloc, /* special_function */ | |
1051 | "R_PPC64_ADDR16_DS", /* name */ | |
1052 | FALSE, /* partial_inplace */ | |
1053 | 0, /* src_mask */ | |
1054 | 0xfffc, /* dst_mask */ | |
1055 | FALSE), /* pcrel_offset */ | |
1056 | ||
1057 | /* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */ | |
1058 | HOWTO (R_PPC64_ADDR16_LO_DS, /* type */ | |
1059 | 0, /* rightshift */ | |
1060 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1061 | 16, /* bitsize */ | |
1062 | FALSE, /* pc_relative */ | |
1063 | 0, /* bitpos */ | |
1064 | complain_overflow_dont,/* complain_on_overflow */ | |
1065 | bfd_elf_generic_reloc, /* special_function */ | |
1066 | "R_PPC64_ADDR16_LO_DS",/* name */ | |
1067 | FALSE, /* partial_inplace */ | |
1068 | 0, /* src_mask */ | |
1069 | 0xfffc, /* dst_mask */ | |
1070 | FALSE), /* pcrel_offset */ | |
1071 | ||
1072 | /* Like R_PPC64_GOT16, but for instructions with a DS field. */ | |
1073 | HOWTO (R_PPC64_GOT16_DS, /* type */ | |
1074 | 0, /* rightshift */ | |
1075 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1076 | 16, /* bitsize */ | |
1077 | FALSE, /* pc_relative */ | |
1078 | 0, /* bitpos */ | |
1079 | complain_overflow_signed, /* complain_on_overflow */ | |
1080 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1081 | "R_PPC64_GOT16_DS", /* name */ | |
1082 | FALSE, /* partial_inplace */ | |
1083 | 0, /* src_mask */ | |
1084 | 0xfffc, /* dst_mask */ | |
1085 | FALSE), /* pcrel_offset */ | |
1086 | ||
1087 | /* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */ | |
1088 | HOWTO (R_PPC64_GOT16_LO_DS, /* type */ | |
1089 | 0, /* rightshift */ | |
1090 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1091 | 16, /* bitsize */ | |
1092 | FALSE, /* pc_relative */ | |
1093 | 0, /* bitpos */ | |
1094 | complain_overflow_dont, /* complain_on_overflow */ | |
1095 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1096 | "R_PPC64_GOT16_LO_DS", /* name */ | |
1097 | FALSE, /* partial_inplace */ | |
1098 | 0, /* src_mask */ | |
1099 | 0xfffc, /* dst_mask */ | |
1100 | FALSE), /* pcrel_offset */ | |
1101 | ||
1102 | /* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */ | |
1103 | HOWTO (R_PPC64_PLT16_LO_DS, /* type */ | |
1104 | 0, /* rightshift */ | |
1105 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1106 | 16, /* bitsize */ | |
1107 | FALSE, /* pc_relative */ | |
1108 | 0, /* bitpos */ | |
1109 | complain_overflow_dont, /* complain_on_overflow */ | |
1110 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1111 | "R_PPC64_PLT16_LO_DS", /* name */ | |
1112 | FALSE, /* partial_inplace */ | |
1113 | 0, /* src_mask */ | |
1114 | 0xfffc, /* dst_mask */ | |
1115 | FALSE), /* pcrel_offset */ | |
1116 | ||
1117 | /* Like R_PPC64_SECTOFF, but for instructions with a DS field. */ | |
1118 | HOWTO (R_PPC64_SECTOFF_DS, /* type */ | |
1119 | 0, /* rightshift */ | |
1120 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1121 | 16, /* bitsize */ | |
1122 | FALSE, /* pc_relative */ | |
1123 | 0, /* bitpos */ | |
1124 | complain_overflow_bitfield, /* complain_on_overflow */ | |
1125 | ppc64_elf_sectoff_reloc, /* special_function */ | |
1126 | "R_PPC64_SECTOFF_DS", /* name */ | |
1127 | FALSE, /* partial_inplace */ | |
1128 | 0, /* src_mask */ | |
1129 | 0xfffc, /* dst_mask */ | |
1130 | FALSE), /* pcrel_offset */ | |
1131 | ||
1132 | /* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */ | |
1133 | HOWTO (R_PPC64_SECTOFF_LO_DS, /* type */ | |
1134 | 0, /* rightshift */ | |
1135 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1136 | 16, /* bitsize */ | |
1137 | FALSE, /* pc_relative */ | |
1138 | 0, /* bitpos */ | |
1139 | complain_overflow_dont, /* complain_on_overflow */ | |
1140 | ppc64_elf_sectoff_reloc, /* special_function */ | |
1141 | "R_PPC64_SECTOFF_LO_DS",/* name */ | |
1142 | FALSE, /* partial_inplace */ | |
1143 | 0, /* src_mask */ | |
1144 | 0xfffc, /* dst_mask */ | |
1145 | FALSE), /* pcrel_offset */ | |
1146 | ||
1147 | /* Like R_PPC64_TOC16, but for instructions with a DS field. */ | |
1148 | HOWTO (R_PPC64_TOC16_DS, /* type */ | |
1149 | 0, /* rightshift */ | |
1150 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1151 | 16, /* bitsize */ | |
1152 | FALSE, /* pc_relative */ | |
1153 | 0, /* bitpos */ | |
1154 | complain_overflow_signed, /* complain_on_overflow */ | |
1155 | ppc64_elf_toc_reloc, /* special_function */ | |
1156 | "R_PPC64_TOC16_DS", /* name */ | |
1157 | FALSE, /* partial_inplace */ | |
1158 | 0, /* src_mask */ | |
1159 | 0xfffc, /* dst_mask */ | |
1160 | FALSE), /* pcrel_offset */ | |
1161 | ||
1162 | /* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */ | |
1163 | HOWTO (R_PPC64_TOC16_LO_DS, /* type */ | |
1164 | 0, /* rightshift */ | |
1165 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1166 | 16, /* bitsize */ | |
1167 | FALSE, /* pc_relative */ | |
1168 | 0, /* bitpos */ | |
1169 | complain_overflow_dont, /* complain_on_overflow */ | |
1170 | ppc64_elf_toc_reloc, /* special_function */ | |
1171 | "R_PPC64_TOC16_LO_DS", /* name */ | |
1172 | FALSE, /* partial_inplace */ | |
1173 | 0, /* src_mask */ | |
1174 | 0xfffc, /* dst_mask */ | |
1175 | FALSE), /* pcrel_offset */ | |
1176 | ||
1177 | /* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */ | |
1178 | /* FIXME: R_PPC64_PLTGOT16_DS not implemented. */ | |
1179 | HOWTO (R_PPC64_PLTGOT16_DS, /* type */ | |
1180 | 0, /* rightshift */ | |
1181 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1182 | 16, /* bitsize */ | |
1183 | FALSE, /* pc_relative */ | |
1184 | 0, /* bitpos */ | |
1185 | complain_overflow_signed, /* complain_on_overflow */ | |
1186 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1187 | "R_PPC64_PLTGOT16_DS", /* name */ | |
1188 | FALSE, /* partial_inplace */ | |
1189 | 0, /* src_mask */ | |
1190 | 0xfffc, /* dst_mask */ | |
1191 | FALSE), /* pcrel_offset */ | |
1192 | ||
1193 | /* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */ | |
1194 | /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */ | |
1195 | HOWTO (R_PPC64_PLTGOT16_LO_DS,/* type */ | |
1196 | 0, /* rightshift */ | |
1197 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1198 | 16, /* bitsize */ | |
1199 | FALSE, /* pc_relative */ | |
1200 | 0, /* bitpos */ | |
1201 | complain_overflow_dont, /* complain_on_overflow */ | |
1202 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1203 | "R_PPC64_PLTGOT16_LO_DS",/* name */ | |
1204 | FALSE, /* partial_inplace */ | |
1205 | 0, /* src_mask */ | |
1206 | 0xfffc, /* dst_mask */ | |
1207 | FALSE), /* pcrel_offset */ | |
1208 | ||
1209 | /* Marker reloc for TLS. */ | |
1210 | HOWTO (R_PPC64_TLS, | |
1211 | 0, /* rightshift */ | |
1212 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1213 | 32, /* bitsize */ | |
1214 | FALSE, /* pc_relative */ | |
1215 | 0, /* bitpos */ | |
1216 | complain_overflow_dont, /* complain_on_overflow */ | |
1217 | bfd_elf_generic_reloc, /* special_function */ | |
1218 | "R_PPC64_TLS", /* name */ | |
1219 | FALSE, /* partial_inplace */ | |
1220 | 0, /* src_mask */ | |
1221 | 0, /* dst_mask */ | |
1222 | FALSE), /* pcrel_offset */ | |
1223 | ||
1224 | /* Computes the load module index of the load module that contains the | |
1225 | definition of its TLS sym. */ | |
1226 | HOWTO (R_PPC64_DTPMOD64, | |
1227 | 0, /* rightshift */ | |
1228 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
1229 | 64, /* bitsize */ | |
1230 | FALSE, /* pc_relative */ | |
1231 | 0, /* bitpos */ | |
1232 | complain_overflow_dont, /* complain_on_overflow */ | |
1233 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1234 | "R_PPC64_DTPMOD64", /* name */ | |
1235 | FALSE, /* partial_inplace */ | |
1236 | 0, /* src_mask */ | |
1237 | ONES (64), /* dst_mask */ | |
1238 | FALSE), /* pcrel_offset */ | |
1239 | ||
1240 | /* Computes a dtv-relative displacement, the difference between the value | |
1241 | of sym+add and the base address of the thread-local storage block that | |
1242 | contains the definition of sym, minus 0x8000. */ | |
1243 | HOWTO (R_PPC64_DTPREL64, | |
1244 | 0, /* rightshift */ | |
1245 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
1246 | 64, /* bitsize */ | |
1247 | FALSE, /* pc_relative */ | |
1248 | 0, /* bitpos */ | |
1249 | complain_overflow_dont, /* complain_on_overflow */ | |
1250 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1251 | "R_PPC64_DTPREL64", /* name */ | |
1252 | FALSE, /* partial_inplace */ | |
1253 | 0, /* src_mask */ | |
1254 | ONES (64), /* dst_mask */ | |
1255 | FALSE), /* pcrel_offset */ | |
1256 | ||
1257 | /* A 16 bit dtprel reloc. */ | |
1258 | HOWTO (R_PPC64_DTPREL16, | |
1259 | 0, /* rightshift */ | |
1260 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1261 | 16, /* bitsize */ | |
1262 | FALSE, /* pc_relative */ | |
1263 | 0, /* bitpos */ | |
1264 | complain_overflow_signed, /* complain_on_overflow */ | |
1265 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1266 | "R_PPC64_DTPREL16", /* name */ | |
1267 | FALSE, /* partial_inplace */ | |
1268 | 0, /* src_mask */ | |
1269 | 0xffff, /* dst_mask */ | |
1270 | FALSE), /* pcrel_offset */ | |
1271 | ||
1272 | /* Like DTPREL16, but no overflow. */ | |
1273 | HOWTO (R_PPC64_DTPREL16_LO, | |
1274 | 0, /* rightshift */ | |
1275 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1276 | 16, /* bitsize */ | |
1277 | FALSE, /* pc_relative */ | |
1278 | 0, /* bitpos */ | |
1279 | complain_overflow_dont, /* complain_on_overflow */ | |
1280 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1281 | "R_PPC64_DTPREL16_LO", /* name */ | |
1282 | FALSE, /* partial_inplace */ | |
1283 | 0, /* src_mask */ | |
1284 | 0xffff, /* dst_mask */ | |
1285 | FALSE), /* pcrel_offset */ | |
1286 | ||
1287 | /* Like DTPREL16_LO, but next higher group of 16 bits. */ | |
1288 | HOWTO (R_PPC64_DTPREL16_HI, | |
1289 | 16, /* rightshift */ | |
1290 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1291 | 16, /* bitsize */ | |
1292 | FALSE, /* pc_relative */ | |
1293 | 0, /* bitpos */ | |
1294 | complain_overflow_dont, /* complain_on_overflow */ | |
1295 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1296 | "R_PPC64_DTPREL16_HI", /* name */ | |
1297 | FALSE, /* partial_inplace */ | |
1298 | 0, /* src_mask */ | |
1299 | 0xffff, /* dst_mask */ | |
1300 | FALSE), /* pcrel_offset */ | |
1301 | ||
1302 | /* Like DTPREL16_HI, but adjust for low 16 bits. */ | |
1303 | HOWTO (R_PPC64_DTPREL16_HA, | |
1304 | 16, /* rightshift */ | |
1305 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1306 | 16, /* bitsize */ | |
1307 | FALSE, /* pc_relative */ | |
1308 | 0, /* bitpos */ | |
1309 | complain_overflow_dont, /* complain_on_overflow */ | |
1310 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1311 | "R_PPC64_DTPREL16_HA", /* name */ | |
1312 | FALSE, /* partial_inplace */ | |
1313 | 0, /* src_mask */ | |
1314 | 0xffff, /* dst_mask */ | |
1315 | FALSE), /* pcrel_offset */ | |
1316 | ||
1317 | /* Like DTPREL16_HI, but next higher group of 16 bits. */ | |
1318 | HOWTO (R_PPC64_DTPREL16_HIGHER, | |
1319 | 32, /* rightshift */ | |
1320 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1321 | 16, /* bitsize */ | |
1322 | FALSE, /* pc_relative */ | |
1323 | 0, /* bitpos */ | |
1324 | complain_overflow_dont, /* complain_on_overflow */ | |
1325 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1326 | "R_PPC64_DTPREL16_HIGHER", /* name */ | |
1327 | FALSE, /* partial_inplace */ | |
1328 | 0, /* src_mask */ | |
1329 | 0xffff, /* dst_mask */ | |
1330 | FALSE), /* pcrel_offset */ | |
1331 | ||
1332 | /* Like DTPREL16_HIGHER, but adjust for low 16 bits. */ | |
1333 | HOWTO (R_PPC64_DTPREL16_HIGHERA, | |
1334 | 32, /* rightshift */ | |
1335 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1336 | 16, /* bitsize */ | |
1337 | FALSE, /* pc_relative */ | |
1338 | 0, /* bitpos */ | |
1339 | complain_overflow_dont, /* complain_on_overflow */ | |
1340 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1341 | "R_PPC64_DTPREL16_HIGHERA", /* name */ | |
1342 | FALSE, /* partial_inplace */ | |
1343 | 0, /* src_mask */ | |
1344 | 0xffff, /* dst_mask */ | |
1345 | FALSE), /* pcrel_offset */ | |
1346 | ||
1347 | /* Like DTPREL16_HIGHER, but next higher group of 16 bits. */ | |
1348 | HOWTO (R_PPC64_DTPREL16_HIGHEST, | |
1349 | 48, /* rightshift */ | |
1350 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1351 | 16, /* bitsize */ | |
1352 | FALSE, /* pc_relative */ | |
1353 | 0, /* bitpos */ | |
1354 | complain_overflow_dont, /* complain_on_overflow */ | |
1355 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1356 | "R_PPC64_DTPREL16_HIGHEST", /* name */ | |
1357 | FALSE, /* partial_inplace */ | |
1358 | 0, /* src_mask */ | |
1359 | 0xffff, /* dst_mask */ | |
1360 | FALSE), /* pcrel_offset */ | |
1361 | ||
1362 | /* Like DTPREL16_HIGHEST, but adjust for low 16 bits. */ | |
1363 | HOWTO (R_PPC64_DTPREL16_HIGHESTA, | |
1364 | 48, /* rightshift */ | |
1365 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1366 | 16, /* bitsize */ | |
1367 | FALSE, /* pc_relative */ | |
1368 | 0, /* bitpos */ | |
1369 | complain_overflow_dont, /* complain_on_overflow */ | |
1370 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1371 | "R_PPC64_DTPREL16_HIGHESTA", /* name */ | |
1372 | FALSE, /* partial_inplace */ | |
1373 | 0, /* src_mask */ | |
1374 | 0xffff, /* dst_mask */ | |
1375 | FALSE), /* pcrel_offset */ | |
1376 | ||
1377 | /* Like DTPREL16, but for insns with a DS field. */ | |
1378 | HOWTO (R_PPC64_DTPREL16_DS, | |
1379 | 0, /* rightshift */ | |
1380 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1381 | 16, /* bitsize */ | |
1382 | FALSE, /* pc_relative */ | |
1383 | 0, /* bitpos */ | |
1384 | complain_overflow_signed, /* complain_on_overflow */ | |
1385 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1386 | "R_PPC64_DTPREL16_DS", /* name */ | |
1387 | FALSE, /* partial_inplace */ | |
1388 | 0, /* src_mask */ | |
1389 | 0xfffc, /* dst_mask */ | |
1390 | FALSE), /* pcrel_offset */ | |
1391 | ||
1392 | /* Like DTPREL16_DS, but no overflow. */ | |
1393 | HOWTO (R_PPC64_DTPREL16_LO_DS, | |
1394 | 0, /* rightshift */ | |
1395 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1396 | 16, /* bitsize */ | |
1397 | FALSE, /* pc_relative */ | |
1398 | 0, /* bitpos */ | |
1399 | complain_overflow_dont, /* complain_on_overflow */ | |
1400 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1401 | "R_PPC64_DTPREL16_LO_DS", /* name */ | |
1402 | FALSE, /* partial_inplace */ | |
1403 | 0, /* src_mask */ | |
1404 | 0xfffc, /* dst_mask */ | |
1405 | FALSE), /* pcrel_offset */ | |
1406 | ||
1407 | /* Computes a tp-relative displacement, the difference between the value of | |
1408 | sym+add and the value of the thread pointer (r13). */ | |
1409 | HOWTO (R_PPC64_TPREL64, | |
1410 | 0, /* rightshift */ | |
1411 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
1412 | 64, /* bitsize */ | |
1413 | FALSE, /* pc_relative */ | |
1414 | 0, /* bitpos */ | |
1415 | complain_overflow_dont, /* complain_on_overflow */ | |
1416 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1417 | "R_PPC64_TPREL64", /* name */ | |
1418 | FALSE, /* partial_inplace */ | |
1419 | 0, /* src_mask */ | |
1420 | ONES (64), /* dst_mask */ | |
1421 | FALSE), /* pcrel_offset */ | |
1422 | ||
1423 | /* A 16 bit tprel reloc. */ | |
1424 | HOWTO (R_PPC64_TPREL16, | |
1425 | 0, /* rightshift */ | |
1426 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1427 | 16, /* bitsize */ | |
1428 | FALSE, /* pc_relative */ | |
1429 | 0, /* bitpos */ | |
1430 | complain_overflow_signed, /* complain_on_overflow */ | |
1431 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1432 | "R_PPC64_TPREL16", /* name */ | |
1433 | FALSE, /* partial_inplace */ | |
1434 | 0, /* src_mask */ | |
1435 | 0xffff, /* dst_mask */ | |
1436 | FALSE), /* pcrel_offset */ | |
1437 | ||
1438 | /* Like TPREL16, but no overflow. */ | |
1439 | HOWTO (R_PPC64_TPREL16_LO, | |
1440 | 0, /* rightshift */ | |
1441 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1442 | 16, /* bitsize */ | |
1443 | FALSE, /* pc_relative */ | |
1444 | 0, /* bitpos */ | |
1445 | complain_overflow_dont, /* complain_on_overflow */ | |
1446 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1447 | "R_PPC64_TPREL16_LO", /* name */ | |
1448 | FALSE, /* partial_inplace */ | |
1449 | 0, /* src_mask */ | |
1450 | 0xffff, /* dst_mask */ | |
1451 | FALSE), /* pcrel_offset */ | |
1452 | ||
1453 | /* Like TPREL16_LO, but next higher group of 16 bits. */ | |
1454 | HOWTO (R_PPC64_TPREL16_HI, | |
1455 | 16, /* rightshift */ | |
1456 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1457 | 16, /* bitsize */ | |
1458 | FALSE, /* pc_relative */ | |
1459 | 0, /* bitpos */ | |
1460 | complain_overflow_dont, /* complain_on_overflow */ | |
1461 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1462 | "R_PPC64_TPREL16_HI", /* name */ | |
1463 | FALSE, /* partial_inplace */ | |
1464 | 0, /* src_mask */ | |
1465 | 0xffff, /* dst_mask */ | |
1466 | FALSE), /* pcrel_offset */ | |
1467 | ||
1468 | /* Like TPREL16_HI, but adjust for low 16 bits. */ | |
1469 | HOWTO (R_PPC64_TPREL16_HA, | |
1470 | 16, /* rightshift */ | |
1471 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1472 | 16, /* bitsize */ | |
1473 | FALSE, /* pc_relative */ | |
1474 | 0, /* bitpos */ | |
1475 | complain_overflow_dont, /* complain_on_overflow */ | |
1476 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1477 | "R_PPC64_TPREL16_HA", /* name */ | |
1478 | FALSE, /* partial_inplace */ | |
1479 | 0, /* src_mask */ | |
1480 | 0xffff, /* dst_mask */ | |
1481 | FALSE), /* pcrel_offset */ | |
1482 | ||
1483 | /* Like TPREL16_HI, but next higher group of 16 bits. */ | |
1484 | HOWTO (R_PPC64_TPREL16_HIGHER, | |
1485 | 32, /* rightshift */ | |
1486 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1487 | 16, /* bitsize */ | |
1488 | FALSE, /* pc_relative */ | |
1489 | 0, /* bitpos */ | |
1490 | complain_overflow_dont, /* complain_on_overflow */ | |
1491 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1492 | "R_PPC64_TPREL16_HIGHER", /* name */ | |
1493 | FALSE, /* partial_inplace */ | |
1494 | 0, /* src_mask */ | |
1495 | 0xffff, /* dst_mask */ | |
1496 | FALSE), /* pcrel_offset */ | |
1497 | ||
1498 | /* Like TPREL16_HIGHER, but adjust for low 16 bits. */ | |
1499 | HOWTO (R_PPC64_TPREL16_HIGHERA, | |
1500 | 32, /* rightshift */ | |
1501 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1502 | 16, /* bitsize */ | |
1503 | FALSE, /* pc_relative */ | |
1504 | 0, /* bitpos */ | |
1505 | complain_overflow_dont, /* complain_on_overflow */ | |
1506 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1507 | "R_PPC64_TPREL16_HIGHERA", /* name */ | |
1508 | FALSE, /* partial_inplace */ | |
1509 | 0, /* src_mask */ | |
1510 | 0xffff, /* dst_mask */ | |
1511 | FALSE), /* pcrel_offset */ | |
1512 | ||
1513 | /* Like TPREL16_HIGHER, but next higher group of 16 bits. */ | |
1514 | HOWTO (R_PPC64_TPREL16_HIGHEST, | |
1515 | 48, /* rightshift */ | |
1516 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1517 | 16, /* bitsize */ | |
1518 | FALSE, /* pc_relative */ | |
1519 | 0, /* bitpos */ | |
1520 | complain_overflow_dont, /* complain_on_overflow */ | |
1521 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1522 | "R_PPC64_TPREL16_HIGHEST", /* name */ | |
1523 | FALSE, /* partial_inplace */ | |
1524 | 0, /* src_mask */ | |
1525 | 0xffff, /* dst_mask */ | |
1526 | FALSE), /* pcrel_offset */ | |
1527 | ||
1528 | /* Like TPREL16_HIGHEST, but adjust for low 16 bits. */ | |
1529 | HOWTO (R_PPC64_TPREL16_HIGHESTA, | |
1530 | 48, /* rightshift */ | |
1531 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1532 | 16, /* bitsize */ | |
1533 | FALSE, /* pc_relative */ | |
1534 | 0, /* bitpos */ | |
1535 | complain_overflow_dont, /* complain_on_overflow */ | |
1536 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1537 | "R_PPC64_TPREL16_HIGHESTA", /* name */ | |
1538 | FALSE, /* partial_inplace */ | |
1539 | 0, /* src_mask */ | |
1540 | 0xffff, /* dst_mask */ | |
1541 | FALSE), /* pcrel_offset */ | |
1542 | ||
1543 | /* Like TPREL16, but for insns with a DS field. */ | |
1544 | HOWTO (R_PPC64_TPREL16_DS, | |
1545 | 0, /* rightshift */ | |
1546 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1547 | 16, /* bitsize */ | |
1548 | FALSE, /* pc_relative */ | |
1549 | 0, /* bitpos */ | |
1550 | complain_overflow_signed, /* complain_on_overflow */ | |
1551 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1552 | "R_PPC64_TPREL16_DS", /* name */ | |
1553 | FALSE, /* partial_inplace */ | |
1554 | 0, /* src_mask */ | |
1555 | 0xfffc, /* dst_mask */ | |
1556 | FALSE), /* pcrel_offset */ | |
1557 | ||
1558 | /* Like TPREL16_DS, but no overflow. */ | |
1559 | HOWTO (R_PPC64_TPREL16_LO_DS, | |
1560 | 0, /* rightshift */ | |
1561 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1562 | 16, /* bitsize */ | |
1563 | FALSE, /* pc_relative */ | |
1564 | 0, /* bitpos */ | |
1565 | complain_overflow_dont, /* complain_on_overflow */ | |
1566 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1567 | "R_PPC64_TPREL16_LO_DS", /* name */ | |
1568 | FALSE, /* partial_inplace */ | |
1569 | 0, /* src_mask */ | |
1570 | 0xfffc, /* dst_mask */ | |
1571 | FALSE), /* pcrel_offset */ | |
1572 | ||
1573 | /* Allocates two contiguous entries in the GOT to hold a tls_index structure, | |
1574 | with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset | |
1575 | to the first entry relative to the TOC base (r2). */ | |
1576 | HOWTO (R_PPC64_GOT_TLSGD16, | |
1577 | 0, /* rightshift */ | |
1578 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1579 | 16, /* bitsize */ | |
1580 | FALSE, /* pc_relative */ | |
1581 | 0, /* bitpos */ | |
1582 | complain_overflow_signed, /* complain_on_overflow */ | |
1583 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1584 | "R_PPC64_GOT_TLSGD16", /* name */ | |
b34976b6 | 1585 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1586 | 0, /* src_mask */ |
1587 | 0xffff, /* dst_mask */ | |
b34976b6 | 1588 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1589 | |
411e1bfb AM |
1590 | /* Like GOT_TLSGD16, but no overflow. */ |
1591 | HOWTO (R_PPC64_GOT_TLSGD16_LO, | |
5bd4f169 AM |
1592 | 0, /* rightshift */ |
1593 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1594 | 16, /* bitsize */ | |
b34976b6 | 1595 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1596 | 0, /* bitpos */ |
1597 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 1598 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1599 | "R_PPC64_GOT_TLSGD16_LO", /* name */ |
b34976b6 | 1600 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1601 | 0, /* src_mask */ |
1602 | 0xffff, /* dst_mask */ | |
b34976b6 | 1603 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1604 | |
411e1bfb AM |
1605 | /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */ |
1606 | HOWTO (R_PPC64_GOT_TLSGD16_HI, | |
5bd4f169 AM |
1607 | 16, /* rightshift */ |
1608 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1609 | 16, /* bitsize */ | |
b34976b6 | 1610 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1611 | 0, /* bitpos */ |
1612 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 1613 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1614 | "R_PPC64_GOT_TLSGD16_HI", /* name */ |
b34976b6 | 1615 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1616 | 0, /* src_mask */ |
1617 | 0xffff, /* dst_mask */ | |
b34976b6 | 1618 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1619 | |
411e1bfb AM |
1620 | /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */ |
1621 | HOWTO (R_PPC64_GOT_TLSGD16_HA, | |
5bd4f169 AM |
1622 | 16, /* rightshift */ |
1623 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1624 | 16, /* bitsize */ | |
b34976b6 | 1625 | FALSE, /* pc_relative */ |
5bd4f169 | 1626 | 0, /* bitpos */ |
411e1bfb | 1627 | complain_overflow_dont, /* complain_on_overflow */ |
805fc799 | 1628 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1629 | "R_PPC64_GOT_TLSGD16_HA", /* name */ |
b34976b6 | 1630 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1631 | 0, /* src_mask */ |
1632 | 0xffff, /* dst_mask */ | |
b34976b6 | 1633 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1634 | |
411e1bfb AM |
1635 | /* Allocates two contiguous entries in the GOT to hold a tls_index structure, |
1636 | with values (sym+add)@dtpmod and zero, and computes the offset to the | |
1637 | first entry relative to the TOC base (r2). */ | |
1638 | HOWTO (R_PPC64_GOT_TLSLD16, | |
5bd4f169 AM |
1639 | 0, /* rightshift */ |
1640 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1641 | 16, /* bitsize */ | |
b34976b6 | 1642 | FALSE, /* pc_relative */ |
5bd4f169 | 1643 | 0, /* bitpos */ |
411e1bfb AM |
1644 | complain_overflow_signed, /* complain_on_overflow */ |
1645 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1646 | "R_PPC64_GOT_TLSLD16", /* name */ | |
b34976b6 | 1647 | FALSE, /* partial_inplace */ |
d006db6c | 1648 | 0, /* src_mask */ |
411e1bfb | 1649 | 0xffff, /* dst_mask */ |
b34976b6 | 1650 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1651 | |
411e1bfb AM |
1652 | /* Like GOT_TLSLD16, but no overflow. */ |
1653 | HOWTO (R_PPC64_GOT_TLSLD16_LO, | |
5bd4f169 AM |
1654 | 0, /* rightshift */ |
1655 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1656 | 16, /* bitsize */ | |
b34976b6 | 1657 | FALSE, /* pc_relative */ |
5bd4f169 | 1658 | 0, /* bitpos */ |
411e1bfb AM |
1659 | complain_overflow_dont, /* complain_on_overflow */ |
1660 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1661 | "R_PPC64_GOT_TLSLD16_LO", /* name */ | |
b34976b6 | 1662 | FALSE, /* partial_inplace */ |
d006db6c | 1663 | 0, /* src_mask */ |
411e1bfb | 1664 | 0xffff, /* dst_mask */ |
b34976b6 | 1665 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1666 | |
411e1bfb AM |
1667 | /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */ |
1668 | HOWTO (R_PPC64_GOT_TLSLD16_HI, | |
1669 | 16, /* rightshift */ | |
5bd4f169 AM |
1670 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1671 | 16, /* bitsize */ | |
b34976b6 | 1672 | FALSE, /* pc_relative */ |
5bd4f169 | 1673 | 0, /* bitpos */ |
411e1bfb | 1674 | complain_overflow_dont, /* complain_on_overflow */ |
805fc799 | 1675 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1676 | "R_PPC64_GOT_TLSLD16_HI", /* name */ |
b34976b6 | 1677 | FALSE, /* partial_inplace */ |
d006db6c | 1678 | 0, /* src_mask */ |
411e1bfb | 1679 | 0xffff, /* dst_mask */ |
b34976b6 | 1680 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1681 | |
411e1bfb AM |
1682 | /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */ |
1683 | HOWTO (R_PPC64_GOT_TLSLD16_HA, | |
1684 | 16, /* rightshift */ | |
5bd4f169 AM |
1685 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1686 | 16, /* bitsize */ | |
b34976b6 | 1687 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1688 | 0, /* bitpos */ |
1689 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 1690 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1691 | "R_PPC64_GOT_TLSLD16_HA", /* name */ |
b34976b6 | 1692 | FALSE, /* partial_inplace */ |
d006db6c | 1693 | 0, /* src_mask */ |
411e1bfb | 1694 | 0xffff, /* dst_mask */ |
b34976b6 | 1695 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1696 | |
411e1bfb AM |
1697 | /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes |
1698 | the offset to the entry relative to the TOC base (r2). */ | |
1699 | HOWTO (R_PPC64_GOT_DTPREL16_DS, | |
5bd4f169 AM |
1700 | 0, /* rightshift */ |
1701 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1702 | 16, /* bitsize */ | |
b34976b6 | 1703 | FALSE, /* pc_relative */ |
5bd4f169 | 1704 | 0, /* bitpos */ |
411e1bfb | 1705 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 1706 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1707 | "R_PPC64_GOT_DTPREL16_DS", /* name */ |
b34976b6 | 1708 | FALSE, /* partial_inplace */ |
d006db6c | 1709 | 0, /* src_mask */ |
5bd4f169 | 1710 | 0xfffc, /* dst_mask */ |
b34976b6 | 1711 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1712 | |
411e1bfb AM |
1713 | /* Like GOT_DTPREL16_DS, but no overflow. */ |
1714 | HOWTO (R_PPC64_GOT_DTPREL16_LO_DS, | |
5bd4f169 | 1715 | 0, /* rightshift */ |
c061c2d8 AM |
1716 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1717 | 16, /* bitsize */ | |
b34976b6 | 1718 | FALSE, /* pc_relative */ |
5bd4f169 | 1719 | 0, /* bitpos */ |
411e1bfb AM |
1720 | complain_overflow_dont, /* complain_on_overflow */ |
1721 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1722 | "R_PPC64_GOT_DTPREL16_LO_DS", /* name */ | |
b34976b6 | 1723 | FALSE, /* partial_inplace */ |
d006db6c | 1724 | 0, /* src_mask */ |
c061c2d8 | 1725 | 0xfffc, /* dst_mask */ |
b34976b6 | 1726 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1727 | |
411e1bfb AM |
1728 | /* Like GOT_DTPREL16_LO_DS, but next higher group of 16 bits. */ |
1729 | HOWTO (R_PPC64_GOT_DTPREL16_HI, | |
1730 | 16, /* rightshift */ | |
5bd4f169 AM |
1731 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1732 | 16, /* bitsize */ | |
b34976b6 | 1733 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1734 | 0, /* bitpos */ |
1735 | complain_overflow_dont, /* complain_on_overflow */ | |
411e1bfb AM |
1736 | ppc64_elf_unhandled_reloc, /* special_function */ |
1737 | "R_PPC64_GOT_DTPREL16_HI", /* name */ | |
b34976b6 | 1738 | FALSE, /* partial_inplace */ |
d006db6c | 1739 | 0, /* src_mask */ |
411e1bfb | 1740 | 0xffff, /* dst_mask */ |
b34976b6 | 1741 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1742 | |
411e1bfb AM |
1743 | /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */ |
1744 | HOWTO (R_PPC64_GOT_DTPREL16_HA, | |
1745 | 16, /* rightshift */ | |
1746 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1747 | 16, /* bitsize */ | |
1748 | FALSE, /* pc_relative */ | |
1749 | 0, /* bitpos */ | |
1750 | complain_overflow_dont, /* complain_on_overflow */ | |
1751 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1752 | "R_PPC64_GOT_DTPREL16_HA", /* name */ | |
1753 | FALSE, /* partial_inplace */ | |
1754 | 0, /* src_mask */ | |
1755 | 0xffff, /* dst_mask */ | |
1756 | FALSE), /* pcrel_offset */ | |
1757 | ||
1758 | /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the | |
1759 | offset to the entry relative to the TOC base (r2). */ | |
1760 | HOWTO (R_PPC64_GOT_TPREL16_DS, | |
5bd4f169 AM |
1761 | 0, /* rightshift */ |
1762 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1763 | 16, /* bitsize */ | |
b34976b6 | 1764 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1765 | 0, /* bitpos */ |
1766 | complain_overflow_signed, /* complain_on_overflow */ | |
411e1bfb AM |
1767 | ppc64_elf_unhandled_reloc, /* special_function */ |
1768 | "R_PPC64_GOT_TPREL16_DS", /* name */ | |
b34976b6 | 1769 | FALSE, /* partial_inplace */ |
d006db6c | 1770 | 0, /* src_mask */ |
ad8e1ba5 | 1771 | 0xfffc, /* dst_mask */ |
b34976b6 | 1772 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1773 | |
411e1bfb AM |
1774 | /* Like GOT_TPREL16_DS, but no overflow. */ |
1775 | HOWTO (R_PPC64_GOT_TPREL16_LO_DS, | |
5bd4f169 AM |
1776 | 0, /* rightshift */ |
1777 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1778 | 16, /* bitsize */ | |
b34976b6 | 1779 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1780 | 0, /* bitpos */ |
1781 | complain_overflow_dont, /* complain_on_overflow */ | |
411e1bfb AM |
1782 | ppc64_elf_unhandled_reloc, /* special_function */ |
1783 | "R_PPC64_GOT_TPREL16_LO_DS", /* name */ | |
b34976b6 | 1784 | FALSE, /* partial_inplace */ |
d006db6c | 1785 | 0, /* src_mask */ |
ad8e1ba5 | 1786 | 0xfffc, /* dst_mask */ |
b34976b6 | 1787 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1788 | |
411e1bfb AM |
1789 | /* Like GOT_TPREL16_LO_DS, but next higher group of 16 bits. */ |
1790 | HOWTO (R_PPC64_GOT_TPREL16_HI, | |
1791 | 16, /* rightshift */ | |
5bd4f169 AM |
1792 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1793 | 16, /* bitsize */ | |
b34976b6 | 1794 | FALSE, /* pc_relative */ |
5bd4f169 | 1795 | 0, /* bitpos */ |
411e1bfb | 1796 | complain_overflow_dont, /* complain_on_overflow */ |
805fc799 | 1797 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1798 | "R_PPC64_GOT_TPREL16_HI", /* name */ |
b34976b6 | 1799 | FALSE, /* partial_inplace */ |
d006db6c | 1800 | 0, /* src_mask */ |
411e1bfb | 1801 | 0xffff, /* dst_mask */ |
b34976b6 | 1802 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1803 | |
411e1bfb AM |
1804 | /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */ |
1805 | HOWTO (R_PPC64_GOT_TPREL16_HA, | |
1806 | 16, /* rightshift */ | |
5bd4f169 AM |
1807 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1808 | 16, /* bitsize */ | |
b34976b6 | 1809 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1810 | 0, /* bitpos */ |
1811 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 1812 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1813 | "R_PPC64_GOT_TPREL16_HA", /* name */ |
b34976b6 | 1814 | FALSE, /* partial_inplace */ |
d006db6c | 1815 | 0, /* src_mask */ |
411e1bfb | 1816 | 0xffff, /* dst_mask */ |
b34976b6 | 1817 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
1818 | |
1819 | /* GNU extension to record C++ vtable hierarchy. */ | |
1820 | HOWTO (R_PPC64_GNU_VTINHERIT, /* type */ | |
1821 | 0, /* rightshift */ | |
1822 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
1823 | 0, /* bitsize */ | |
b34976b6 | 1824 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1825 | 0, /* bitpos */ |
1826 | complain_overflow_dont, /* complain_on_overflow */ | |
1827 | NULL, /* special_function */ | |
1828 | "R_PPC64_GNU_VTINHERIT", /* name */ | |
b34976b6 | 1829 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1830 | 0, /* src_mask */ |
1831 | 0, /* dst_mask */ | |
b34976b6 | 1832 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
1833 | |
1834 | /* GNU extension to record C++ vtable member usage. */ | |
1835 | HOWTO (R_PPC64_GNU_VTENTRY, /* type */ | |
1836 | 0, /* rightshift */ | |
1837 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
1838 | 0, /* bitsize */ | |
b34976b6 | 1839 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1840 | 0, /* bitpos */ |
1841 | complain_overflow_dont, /* complain_on_overflow */ | |
1842 | NULL, /* special_function */ | |
1843 | "R_PPC64_GNU_VTENTRY", /* name */ | |
b34976b6 | 1844 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1845 | 0, /* src_mask */ |
1846 | 0, /* dst_mask */ | |
b34976b6 | 1847 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
1848 | }; |
1849 | ||
1850 | \f | |
1851 | /* Initialize the ppc64_elf_howto_table, so that linear accesses can | |
1852 | be done. */ | |
1853 | ||
1854 | static void | |
4ce794b7 | 1855 | ppc_howto_init (void) |
5bd4f169 AM |
1856 | { |
1857 | unsigned int i, type; | |
1858 | ||
1859 | for (i = 0; | |
1860 | i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]); | |
1861 | i++) | |
1862 | { | |
1863 | type = ppc64_elf_howto_raw[i].type; | |
1864 | BFD_ASSERT (type < (sizeof (ppc64_elf_howto_table) | |
1865 | / sizeof (ppc64_elf_howto_table[0]))); | |
1866 | ppc64_elf_howto_table[type] = &ppc64_elf_howto_raw[i]; | |
1867 | } | |
1868 | } | |
1869 | ||
1870 | static reloc_howto_type * | |
4ce794b7 AM |
1871 | ppc64_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, |
1872 | bfd_reloc_code_real_type code) | |
5bd4f169 | 1873 | { |
411e1bfb | 1874 | enum elf_ppc64_reloc_type r = R_PPC64_NONE; |
5bd4f169 AM |
1875 | |
1876 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) | |
1877 | /* Initialize howto table if needed. */ | |
1878 | ppc_howto_init (); | |
1879 | ||
4ce794b7 | 1880 | switch (code) |
5bd4f169 AM |
1881 | { |
1882 | default: | |
4ce794b7 | 1883 | return NULL; |
5bd4f169 | 1884 | |
411e1bfb AM |
1885 | case BFD_RELOC_NONE: r = R_PPC64_NONE; |
1886 | break; | |
1887 | case BFD_RELOC_32: r = R_PPC64_ADDR32; | |
1888 | break; | |
1889 | case BFD_RELOC_PPC_BA26: r = R_PPC64_ADDR24; | |
1890 | break; | |
1891 | case BFD_RELOC_16: r = R_PPC64_ADDR16; | |
1892 | break; | |
1893 | case BFD_RELOC_LO16: r = R_PPC64_ADDR16_LO; | |
1894 | break; | |
1895 | case BFD_RELOC_HI16: r = R_PPC64_ADDR16_HI; | |
1896 | break; | |
1897 | case BFD_RELOC_HI16_S: r = R_PPC64_ADDR16_HA; | |
5bd4f169 | 1898 | break; |
411e1bfb | 1899 | case BFD_RELOC_PPC_BA16: r = R_PPC64_ADDR14; |
5bd4f169 | 1900 | break; |
411e1bfb | 1901 | case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC64_ADDR14_BRTAKEN; |
5bd4f169 | 1902 | break; |
411e1bfb | 1903 | case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC64_ADDR14_BRNTAKEN; |
5bd4f169 | 1904 | break; |
411e1bfb | 1905 | case BFD_RELOC_PPC_B26: r = R_PPC64_REL24; |
5bd4f169 | 1906 | break; |
411e1bfb | 1907 | case BFD_RELOC_PPC_B16: r = R_PPC64_REL14; |
5bd4f169 | 1908 | break; |
411e1bfb | 1909 | case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC64_REL14_BRTAKEN; |
5bd4f169 | 1910 | break; |
411e1bfb | 1911 | case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC64_REL14_BRNTAKEN; |
5bd4f169 | 1912 | break; |
411e1bfb | 1913 | case BFD_RELOC_16_GOTOFF: r = R_PPC64_GOT16; |
5bd4f169 | 1914 | break; |
411e1bfb | 1915 | case BFD_RELOC_LO16_GOTOFF: r = R_PPC64_GOT16_LO; |
5bd4f169 | 1916 | break; |
411e1bfb | 1917 | case BFD_RELOC_HI16_GOTOFF: r = R_PPC64_GOT16_HI; |
5bd4f169 | 1918 | break; |
411e1bfb | 1919 | case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC64_GOT16_HA; |
5bd4f169 | 1920 | break; |
411e1bfb | 1921 | case BFD_RELOC_PPC_COPY: r = R_PPC64_COPY; |
5bd4f169 | 1922 | break; |
411e1bfb | 1923 | case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC64_GLOB_DAT; |
5bd4f169 | 1924 | break; |
411e1bfb | 1925 | case BFD_RELOC_32_PCREL: r = R_PPC64_REL32; |
5bd4f169 | 1926 | break; |
411e1bfb | 1927 | case BFD_RELOC_32_PLTOFF: r = R_PPC64_PLT32; |
5bd4f169 | 1928 | break; |
411e1bfb | 1929 | case BFD_RELOC_32_PLT_PCREL: r = R_PPC64_PLTREL32; |
5bd4f169 | 1930 | break; |
411e1bfb | 1931 | case BFD_RELOC_LO16_PLTOFF: r = R_PPC64_PLT16_LO; |
5bd4f169 | 1932 | break; |
411e1bfb | 1933 | case BFD_RELOC_HI16_PLTOFF: r = R_PPC64_PLT16_HI; |
5bd4f169 | 1934 | break; |
411e1bfb | 1935 | case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC64_PLT16_HA; |
5bd4f169 | 1936 | break; |
411e1bfb | 1937 | case BFD_RELOC_16_BASEREL: r = R_PPC64_SECTOFF; |
5bd4f169 | 1938 | break; |
411e1bfb | 1939 | case BFD_RELOC_LO16_BASEREL: r = R_PPC64_SECTOFF_LO; |
5bd4f169 | 1940 | break; |
411e1bfb | 1941 | case BFD_RELOC_HI16_BASEREL: r = R_PPC64_SECTOFF_HI; |
5bd4f169 | 1942 | break; |
411e1bfb | 1943 | case BFD_RELOC_HI16_S_BASEREL: r = R_PPC64_SECTOFF_HA; |
5bd4f169 | 1944 | break; |
411e1bfb | 1945 | case BFD_RELOC_CTOR: r = R_PPC64_ADDR64; |
5bd4f169 | 1946 | break; |
411e1bfb | 1947 | case BFD_RELOC_64: r = R_PPC64_ADDR64; |
5bd4f169 | 1948 | break; |
411e1bfb | 1949 | case BFD_RELOC_PPC64_HIGHER: r = R_PPC64_ADDR16_HIGHER; |
5bd4f169 | 1950 | break; |
411e1bfb | 1951 | case BFD_RELOC_PPC64_HIGHER_S: r = R_PPC64_ADDR16_HIGHERA; |
5bd4f169 | 1952 | break; |
411e1bfb | 1953 | case BFD_RELOC_PPC64_HIGHEST: r = R_PPC64_ADDR16_HIGHEST; |
5bd4f169 | 1954 | break; |
411e1bfb | 1955 | case BFD_RELOC_PPC64_HIGHEST_S: r = R_PPC64_ADDR16_HIGHESTA; |
5bd4f169 | 1956 | break; |
411e1bfb | 1957 | case BFD_RELOC_64_PCREL: r = R_PPC64_REL64; |
5bd4f169 | 1958 | break; |
411e1bfb | 1959 | case BFD_RELOC_64_PLTOFF: r = R_PPC64_PLT64; |
5bd4f169 | 1960 | break; |
411e1bfb | 1961 | case BFD_RELOC_64_PLT_PCREL: r = R_PPC64_PLTREL64; |
5bd4f169 | 1962 | break; |
411e1bfb | 1963 | case BFD_RELOC_PPC_TOC16: r = R_PPC64_TOC16; |
5bd4f169 | 1964 | break; |
411e1bfb | 1965 | case BFD_RELOC_PPC64_TOC16_LO: r = R_PPC64_TOC16_LO; |
5bd4f169 | 1966 | break; |
411e1bfb | 1967 | case BFD_RELOC_PPC64_TOC16_HI: r = R_PPC64_TOC16_HI; |
5bd4f169 | 1968 | break; |
411e1bfb | 1969 | case BFD_RELOC_PPC64_TOC16_HA: r = R_PPC64_TOC16_HA; |
5bd4f169 | 1970 | break; |
411e1bfb | 1971 | case BFD_RELOC_PPC64_TOC: r = R_PPC64_TOC; |
5bd4f169 | 1972 | break; |
411e1bfb | 1973 | case BFD_RELOC_PPC64_PLTGOT16: r = R_PPC64_PLTGOT16; |
5bd4f169 | 1974 | break; |
411e1bfb | 1975 | case BFD_RELOC_PPC64_PLTGOT16_LO: r = R_PPC64_PLTGOT16_LO; |
5bd4f169 | 1976 | break; |
411e1bfb | 1977 | case BFD_RELOC_PPC64_PLTGOT16_HI: r = R_PPC64_PLTGOT16_HI; |
5bd4f169 | 1978 | break; |
411e1bfb | 1979 | case BFD_RELOC_PPC64_PLTGOT16_HA: r = R_PPC64_PLTGOT16_HA; |
5bd4f169 | 1980 | break; |
411e1bfb | 1981 | case BFD_RELOC_PPC64_ADDR16_DS: r = R_PPC64_ADDR16_DS; |
5bd4f169 | 1982 | break; |
411e1bfb | 1983 | case BFD_RELOC_PPC64_ADDR16_LO_DS: r = R_PPC64_ADDR16_LO_DS; |
5bd4f169 | 1984 | break; |
411e1bfb | 1985 | case BFD_RELOC_PPC64_GOT16_DS: r = R_PPC64_GOT16_DS; |
5bd4f169 | 1986 | break; |
411e1bfb | 1987 | case BFD_RELOC_PPC64_GOT16_LO_DS: r = R_PPC64_GOT16_LO_DS; |
5bd4f169 | 1988 | break; |
411e1bfb | 1989 | case BFD_RELOC_PPC64_PLT16_LO_DS: r = R_PPC64_PLT16_LO_DS; |
5bd4f169 | 1990 | break; |
411e1bfb | 1991 | case BFD_RELOC_PPC64_SECTOFF_DS: r = R_PPC64_SECTOFF_DS; |
5bd4f169 | 1992 | break; |
411e1bfb | 1993 | case BFD_RELOC_PPC64_SECTOFF_LO_DS: r = R_PPC64_SECTOFF_LO_DS; |
5bd4f169 | 1994 | break; |
411e1bfb | 1995 | case BFD_RELOC_PPC64_TOC16_DS: r = R_PPC64_TOC16_DS; |
5bd4f169 | 1996 | break; |
411e1bfb | 1997 | case BFD_RELOC_PPC64_TOC16_LO_DS: r = R_PPC64_TOC16_LO_DS; |
5bd4f169 | 1998 | break; |
411e1bfb | 1999 | case BFD_RELOC_PPC64_PLTGOT16_DS: r = R_PPC64_PLTGOT16_DS; |
5bd4f169 | 2000 | break; |
411e1bfb | 2001 | case BFD_RELOC_PPC64_PLTGOT16_LO_DS: r = R_PPC64_PLTGOT16_LO_DS; |
5bd4f169 | 2002 | break; |
411e1bfb | 2003 | case BFD_RELOC_PPC_TLS: r = R_PPC64_TLS; |
5bd4f169 | 2004 | break; |
411e1bfb | 2005 | case BFD_RELOC_PPC_DTPMOD: r = R_PPC64_DTPMOD64; |
5bd4f169 | 2006 | break; |
411e1bfb | 2007 | case BFD_RELOC_PPC_TPREL16: r = R_PPC64_TPREL16; |
5bd4f169 | 2008 | break; |
411e1bfb | 2009 | case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC64_TPREL16_LO; |
5bd4f169 | 2010 | break; |
411e1bfb | 2011 | case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC64_TPREL16_HI; |
5bd4f169 | 2012 | break; |
411e1bfb | 2013 | case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC64_TPREL16_HA; |
5bd4f169 | 2014 | break; |
411e1bfb | 2015 | case BFD_RELOC_PPC_TPREL: r = R_PPC64_TPREL64; |
5bd4f169 | 2016 | break; |
411e1bfb AM |
2017 | case BFD_RELOC_PPC_DTPREL16: r = R_PPC64_DTPREL16; |
2018 | break; | |
2019 | case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC64_DTPREL16_LO; | |
2020 | break; | |
2021 | case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC64_DTPREL16_HI; | |
2022 | break; | |
2023 | case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC64_DTPREL16_HA; | |
2024 | break; | |
2025 | case BFD_RELOC_PPC_DTPREL: r = R_PPC64_DTPREL64; | |
2026 | break; | |
2027 | case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC64_GOT_TLSGD16; | |
2028 | break; | |
2029 | case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC64_GOT_TLSGD16_LO; | |
2030 | break; | |
2031 | case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC64_GOT_TLSGD16_HI; | |
2032 | break; | |
2033 | case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC64_GOT_TLSGD16_HA; | |
2034 | break; | |
2035 | case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC64_GOT_TLSLD16; | |
2036 | break; | |
2037 | case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC64_GOT_TLSLD16_LO; | |
2038 | break; | |
2039 | case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC64_GOT_TLSLD16_HI; | |
2040 | break; | |
2041 | case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC64_GOT_TLSLD16_HA; | |
2042 | break; | |
2043 | case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC64_GOT_TPREL16_DS; | |
2044 | break; | |
2045 | case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC64_GOT_TPREL16_LO_DS; | |
2046 | break; | |
2047 | case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC64_GOT_TPREL16_HI; | |
2048 | break; | |
2049 | case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC64_GOT_TPREL16_HA; | |
2050 | break; | |
2051 | case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC64_GOT_DTPREL16_DS; | |
2052 | break; | |
2053 | case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC64_GOT_DTPREL16_LO_DS; | |
2054 | break; | |
2055 | case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC64_GOT_DTPREL16_HI; | |
2056 | break; | |
2057 | case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC64_GOT_DTPREL16_HA; | |
2058 | break; | |
2059 | case BFD_RELOC_PPC64_TPREL16_DS: r = R_PPC64_TPREL16_DS; | |
2060 | break; | |
2061 | case BFD_RELOC_PPC64_TPREL16_LO_DS: r = R_PPC64_TPREL16_LO_DS; | |
2062 | break; | |
2063 | case BFD_RELOC_PPC64_TPREL16_HIGHER: r = R_PPC64_TPREL16_HIGHER; | |
2064 | break; | |
2065 | case BFD_RELOC_PPC64_TPREL16_HIGHERA: r = R_PPC64_TPREL16_HIGHERA; | |
2066 | break; | |
2067 | case BFD_RELOC_PPC64_TPREL16_HIGHEST: r = R_PPC64_TPREL16_HIGHEST; | |
2068 | break; | |
2069 | case BFD_RELOC_PPC64_TPREL16_HIGHESTA: r = R_PPC64_TPREL16_HIGHESTA; | |
2070 | break; | |
2071 | case BFD_RELOC_PPC64_DTPREL16_DS: r = R_PPC64_DTPREL16_DS; | |
2072 | break; | |
2073 | case BFD_RELOC_PPC64_DTPREL16_LO_DS: r = R_PPC64_DTPREL16_LO_DS; | |
2074 | break; | |
2075 | case BFD_RELOC_PPC64_DTPREL16_HIGHER: r = R_PPC64_DTPREL16_HIGHER; | |
2076 | break; | |
2077 | case BFD_RELOC_PPC64_DTPREL16_HIGHERA: r = R_PPC64_DTPREL16_HIGHERA; | |
2078 | break; | |
2079 | case BFD_RELOC_PPC64_DTPREL16_HIGHEST: r = R_PPC64_DTPREL16_HIGHEST; | |
2080 | break; | |
2081 | case BFD_RELOC_PPC64_DTPREL16_HIGHESTA: r = R_PPC64_DTPREL16_HIGHESTA; | |
2082 | break; | |
2083 | case BFD_RELOC_VTABLE_INHERIT: r = R_PPC64_GNU_VTINHERIT; | |
2084 | break; | |
2085 | case BFD_RELOC_VTABLE_ENTRY: r = R_PPC64_GNU_VTENTRY; | |
5bd4f169 AM |
2086 | break; |
2087 | } | |
2088 | ||
4ce794b7 | 2089 | return ppc64_elf_howto_table[r]; |
5bd4f169 AM |
2090 | }; |
2091 | ||
2092 | /* Set the howto pointer for a PowerPC ELF reloc. */ | |
2093 | ||
2094 | static void | |
4ce794b7 AM |
2095 | ppc64_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr, |
2096 | Elf_Internal_Rela *dst) | |
5bd4f169 | 2097 | { |
65f38f15 AM |
2098 | unsigned int type; |
2099 | ||
ef60b7ff | 2100 | /* Initialize howto table if needed. */ |
5bd4f169 | 2101 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) |
5bd4f169 AM |
2102 | ppc_howto_init (); |
2103 | ||
65f38f15 AM |
2104 | type = ELF64_R_TYPE (dst->r_info); |
2105 | BFD_ASSERT (type < (sizeof (ppc64_elf_howto_table) | |
2106 | / sizeof (ppc64_elf_howto_table[0]))); | |
2107 | cache_ptr->howto = ppc64_elf_howto_table[type]; | |
5bd4f169 AM |
2108 | } |
2109 | ||
04c9666a | 2110 | /* Handle the R_PPC64_ADDR16_HA and similar relocs. */ |
5bd4f169 AM |
2111 | |
2112 | static bfd_reloc_status_type | |
4ce794b7 AM |
2113 | ppc64_elf_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2114 | void *data, asection *input_section, | |
2115 | bfd *output_bfd, char **error_message) | |
5bd4f169 | 2116 | { |
805fc799 AM |
2117 | /* If this is a relocatable link (output_bfd test tells us), just |
2118 | call the generic function. Any adjustment will be done at final | |
2119 | link time. */ | |
2120 | if (output_bfd != NULL) | |
cedb70c5 | 2121 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2122 | input_section, output_bfd, error_message); |
2123 | ||
2124 | /* Adjust the addend for sign extension of the low 16 bits. | |
2125 | We won't actually be using the low 16 bits, so trashing them | |
2126 | doesn't matter. */ | |
2127 | reloc_entry->addend += 0x8000; | |
2128 | return bfd_reloc_continue; | |
2129 | } | |
5bd4f169 | 2130 | |
805fc799 | 2131 | static bfd_reloc_status_type |
4ce794b7 AM |
2132 | ppc64_elf_brtaken_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2133 | void *data, asection *input_section, | |
2134 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2135 | { |
2136 | long insn; | |
04c9666a | 2137 | enum elf_ppc64_reloc_type r_type; |
805fc799 AM |
2138 | bfd_size_type octets; |
2139 | /* Disabled until we sort out how ld should choose 'y' vs 'at'. */ | |
b34976b6 | 2140 | bfd_boolean is_power4 = FALSE; |
805fc799 AM |
2141 | |
2142 | /* If this is a relocatable link (output_bfd test tells us), just | |
2143 | call the generic function. Any adjustment will be done at final | |
2144 | link time. */ | |
5bd4f169 | 2145 | if (output_bfd != NULL) |
cedb70c5 | 2146 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2147 | input_section, output_bfd, error_message); |
2148 | ||
2149 | octets = reloc_entry->address * bfd_octets_per_byte (abfd); | |
2150 | insn = bfd_get_32 (abfd, (bfd_byte *) data + octets); | |
2151 | insn &= ~(0x01 << 21); | |
4ce794b7 | 2152 | r_type = reloc_entry->howto->type; |
805fc799 AM |
2153 | if (r_type == R_PPC64_ADDR14_BRTAKEN |
2154 | || r_type == R_PPC64_REL14_BRTAKEN) | |
cedb70c5 | 2155 | insn |= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */ |
805fc799 AM |
2156 | |
2157 | if (is_power4) | |
5bd4f169 | 2158 | { |
805fc799 AM |
2159 | /* Set 'a' bit. This is 0b00010 in BO field for branch |
2160 | on CR(BI) insns (BO == 001at or 011at), and 0b01000 | |
2161 | for branch on CTR insns (BO == 1a00t or 1a01t). */ | |
2162 | if ((insn & (0x14 << 21)) == (0x04 << 21)) | |
2163 | insn |= 0x02 << 21; | |
2164 | else if ((insn & (0x14 << 21)) == (0x10 << 21)) | |
2165 | insn |= 0x08 << 21; | |
2166 | else | |
2167 | return bfd_reloc_continue; | |
5bd4f169 | 2168 | } |
805fc799 AM |
2169 | else |
2170 | { | |
2171 | bfd_vma target = 0; | |
2172 | bfd_vma from; | |
5bd4f169 | 2173 | |
805fc799 AM |
2174 | if (!bfd_is_com_section (symbol->section)) |
2175 | target = symbol->value; | |
2176 | target += symbol->section->output_section->vma; | |
2177 | target += symbol->section->output_offset; | |
2178 | target += reloc_entry->addend; | |
5bd4f169 | 2179 | |
805fc799 AM |
2180 | from = (reloc_entry->address |
2181 | + input_section->output_offset | |
2182 | + input_section->output_section->vma); | |
5bd4f169 | 2183 | |
805fc799 AM |
2184 | /* Invert 'y' bit if not the default. */ |
2185 | if ((bfd_signed_vma) (target - from) < 0) | |
2186 | insn ^= 0x01 << 21; | |
2187 | } | |
4ce794b7 | 2188 | bfd_put_32 (abfd, insn, (bfd_byte *) data + octets); |
805fc799 AM |
2189 | return bfd_reloc_continue; |
2190 | } | |
5bd4f169 | 2191 | |
805fc799 | 2192 | static bfd_reloc_status_type |
4ce794b7 AM |
2193 | ppc64_elf_sectoff_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2194 | void *data, asection *input_section, | |
2195 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2196 | { |
2197 | /* If this is a relocatable link (output_bfd test tells us), just | |
2198 | call the generic function. Any adjustment will be done at final | |
2199 | link time. */ | |
2200 | if (output_bfd != NULL) | |
cedb70c5 | 2201 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 | 2202 | input_section, output_bfd, error_message); |
5bd4f169 | 2203 | |
805fc799 AM |
2204 | /* Subtract the symbol section base address. */ |
2205 | reloc_entry->addend -= symbol->section->output_section->vma; | |
5bd4f169 AM |
2206 | return bfd_reloc_continue; |
2207 | } | |
2208 | ||
805fc799 | 2209 | static bfd_reloc_status_type |
4ce794b7 AM |
2210 | ppc64_elf_sectoff_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2211 | void *data, asection *input_section, | |
2212 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2213 | { |
2214 | /* If this is a relocatable link (output_bfd test tells us), just | |
2215 | call the generic function. Any adjustment will be done at final | |
2216 | link time. */ | |
2217 | if (output_bfd != NULL) | |
cedb70c5 | 2218 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2219 | input_section, output_bfd, error_message); |
2220 | ||
2221 | /* Subtract the symbol section base address. */ | |
2222 | reloc_entry->addend -= symbol->section->output_section->vma; | |
2223 | ||
2224 | /* Adjust the addend for sign extension of the low 16 bits. */ | |
2225 | reloc_entry->addend += 0x8000; | |
2226 | return bfd_reloc_continue; | |
2227 | } | |
2228 | ||
2229 | static bfd_reloc_status_type | |
4ce794b7 AM |
2230 | ppc64_elf_toc_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2231 | void *data, asection *input_section, | |
2232 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2233 | { |
2234 | bfd_vma TOCstart; | |
2235 | ||
2236 | /* If this is a relocatable link (output_bfd test tells us), just | |
2237 | call the generic function. Any adjustment will be done at final | |
2238 | link time. */ | |
2239 | if (output_bfd != NULL) | |
cedb70c5 | 2240 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2241 | input_section, output_bfd, error_message); |
2242 | ||
2243 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
2244 | if (TOCstart == 0) | |
2245 | TOCstart = ppc64_elf_toc (input_section->output_section->owner); | |
2246 | ||
2247 | /* Subtract the TOC base address. */ | |
2248 | reloc_entry->addend -= TOCstart + TOC_BASE_OFF; | |
2249 | return bfd_reloc_continue; | |
2250 | } | |
2251 | ||
2252 | static bfd_reloc_status_type | |
4ce794b7 AM |
2253 | ppc64_elf_toc_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2254 | void *data, asection *input_section, | |
2255 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2256 | { |
2257 | bfd_vma TOCstart; | |
2258 | ||
2259 | /* If this is a relocatable link (output_bfd test tells us), just | |
2260 | call the generic function. Any adjustment will be done at final | |
2261 | link time. */ | |
2262 | if (output_bfd != NULL) | |
cedb70c5 | 2263 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2264 | input_section, output_bfd, error_message); |
2265 | ||
2266 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
2267 | if (TOCstart == 0) | |
2268 | TOCstart = ppc64_elf_toc (input_section->output_section->owner); | |
2269 | ||
2270 | /* Subtract the TOC base address. */ | |
2271 | reloc_entry->addend -= TOCstart + TOC_BASE_OFF; | |
2272 | ||
2273 | /* Adjust the addend for sign extension of the low 16 bits. */ | |
2274 | reloc_entry->addend += 0x8000; | |
2275 | return bfd_reloc_continue; | |
2276 | } | |
2277 | ||
2278 | static bfd_reloc_status_type | |
4ce794b7 AM |
2279 | ppc64_elf_toc64_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2280 | void *data, asection *input_section, | |
2281 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2282 | { |
2283 | bfd_vma TOCstart; | |
2284 | bfd_size_type octets; | |
2285 | ||
2286 | /* If this is a relocatable link (output_bfd test tells us), just | |
2287 | call the generic function. Any adjustment will be done at final | |
2288 | link time. */ | |
2289 | if (output_bfd != NULL) | |
cedb70c5 | 2290 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2291 | input_section, output_bfd, error_message); |
2292 | ||
2293 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
2294 | if (TOCstart == 0) | |
2295 | TOCstart = ppc64_elf_toc (input_section->output_section->owner); | |
2296 | ||
2297 | octets = reloc_entry->address * bfd_octets_per_byte (abfd); | |
2298 | bfd_put_64 (abfd, TOCstart + TOC_BASE_OFF, (bfd_byte *) data + octets); | |
2299 | return bfd_reloc_ok; | |
2300 | } | |
2301 | ||
2302 | static bfd_reloc_status_type | |
4ce794b7 AM |
2303 | ppc64_elf_unhandled_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2304 | void *data, asection *input_section, | |
2305 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2306 | { |
2307 | /* If this is a relocatable link (output_bfd test tells us), just | |
2308 | call the generic function. Any adjustment will be done at final | |
2309 | link time. */ | |
2310 | if (output_bfd != NULL) | |
cedb70c5 | 2311 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2312 | input_section, output_bfd, error_message); |
2313 | ||
2314 | if (error_message != NULL) | |
2315 | { | |
2316 | static char buf[60]; | |
2317 | sprintf (buf, "generic linker can't handle %s", | |
2318 | reloc_entry->howto->name); | |
2319 | *error_message = buf; | |
2320 | } | |
2321 | return bfd_reloc_dangerous; | |
2322 | } | |
2323 | ||
e717da7e AM |
2324 | struct ppc64_elf_obj_tdata |
2325 | { | |
2326 | struct elf_obj_tdata elf; | |
2327 | ||
2328 | /* Shortcuts to dynamic linker sections. */ | |
2329 | asection *got; | |
2330 | asection *relgot; | |
2331 | ||
2332 | /* TLS local dynamic got entry handling. Suppose for multiple GOT | |
2333 | sections means we potentially need one of these for each input bfd. */ | |
2334 | union { | |
2335 | bfd_signed_vma refcount; | |
2336 | bfd_vma offset; | |
2337 | } tlsld_got; | |
2338 | }; | |
2339 | ||
2340 | #define ppc64_elf_tdata(bfd) \ | |
2341 | ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any) | |
2342 | ||
2343 | #define ppc64_tlsld_got(bfd) \ | |
2344 | (&ppc64_elf_tdata (bfd)->tlsld_got) | |
2345 | ||
2346 | /* Override the generic function because we store some extras. */ | |
2347 | ||
2348 | static bfd_boolean | |
2349 | ppc64_elf_mkobject (bfd *abfd) | |
2350 | { | |
2351 | bfd_size_type amt = sizeof (struct ppc64_elf_obj_tdata); | |
2352 | abfd->tdata.any = bfd_zalloc (abfd, amt); | |
2353 | if (abfd->tdata.any == NULL) | |
2354 | return FALSE; | |
2355 | return TRUE; | |
2356 | } | |
2357 | ||
feee612b AM |
2358 | /* Fix bad default arch selected for a 64 bit input bfd when the |
2359 | default is 32 bit. */ | |
2360 | ||
b34976b6 | 2361 | static bfd_boolean |
4ce794b7 | 2362 | ppc64_elf_object_p (bfd *abfd) |
feee612b AM |
2363 | { |
2364 | if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 32) | |
2365 | { | |
2366 | Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd); | |
2367 | ||
2368 | if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS64) | |
2369 | { | |
2370 | /* Relies on arch after 32 bit default being 64 bit default. */ | |
2371 | abfd->arch_info = abfd->arch_info->next; | |
2372 | BFD_ASSERT (abfd->arch_info->bits_per_word == 64); | |
2373 | } | |
2374 | } | |
b34976b6 | 2375 | return TRUE; |
feee612b AM |
2376 | } |
2377 | ||
d37c89e5 AM |
2378 | /* Support for core dump NOTE sections. */ |
2379 | ||
2380 | static bfd_boolean | |
2381 | ppc64_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) | |
2382 | { | |
2383 | size_t offset, raw_size; | |
2384 | ||
2385 | if (note->descsz != 504) | |
2386 | return FALSE; | |
2387 | ||
2388 | /* pr_cursig */ | |
2389 | elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12); | |
2390 | ||
2391 | /* pr_pid */ | |
2392 | elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 32); | |
2393 | ||
2394 | /* pr_reg */ | |
2395 | offset = 112; | |
2396 | raw_size = 384; | |
2397 | ||
2398 | /* Make a ".reg/999" section. */ | |
2399 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", | |
2400 | raw_size, note->descpos + offset); | |
2401 | } | |
2402 | ||
2403 | static bfd_boolean | |
2404 | ppc64_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) | |
2405 | { | |
2406 | if (note->descsz != 136) | |
2407 | return FALSE; | |
2408 | ||
2409 | elf_tdata (abfd)->core_program | |
2410 | = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16); | |
2411 | elf_tdata (abfd)->core_command | |
2412 | = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80); | |
2413 | ||
2414 | return TRUE; | |
2415 | } | |
2416 | ||
5bd4f169 AM |
2417 | /* Merge backend specific data from an object file to the output |
2418 | object file when linking. */ | |
2f6d9989 | 2419 | |
b34976b6 | 2420 | static bfd_boolean |
4ce794b7 | 2421 | ppc64_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd) |
5bd4f169 | 2422 | { |
5bd4f169 AM |
2423 | /* Check if we have the same endianess. */ |
2424 | if (ibfd->xvec->byteorder != obfd->xvec->byteorder | |
87e226ce | 2425 | && ibfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN |
5bd4f169 AM |
2426 | && obfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN) |
2427 | { | |
2428 | const char *msg; | |
2429 | ||
2430 | if (bfd_big_endian (ibfd)) | |
4ce794b7 AM |
2431 | msg = _("%s: compiled for a big endian system " |
2432 | "and target is little endian"); | |
5bd4f169 | 2433 | else |
4ce794b7 AM |
2434 | msg = _("%s: compiled for a little endian system " |
2435 | "and target is big endian"); | |
5bd4f169 | 2436 | |
8f615d07 | 2437 | (*_bfd_error_handler) (msg, bfd_archive_filename (ibfd)); |
5bd4f169 AM |
2438 | |
2439 | bfd_set_error (bfd_error_wrong_format); | |
b34976b6 | 2440 | return FALSE; |
5bd4f169 AM |
2441 | } |
2442 | ||
b34976b6 | 2443 | return TRUE; |
5bd4f169 | 2444 | } |
f0abc2a1 | 2445 | |
5d35169e AM |
2446 | /* Add extra PPC sections. */ |
2447 | ||
2448 | static struct bfd_elf_special_section const ppc64_elf_special_sections[]= | |
2449 | { | |
7dcb9820 AM |
2450 | { ".sdata", 6, -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, |
2451 | { ".sbss", 5, -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, | |
2452 | { ".plt", 4, 0, SHT_NOBITS, 0 }, | |
2453 | { ".toc", 4, 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
2454 | { ".toc1", 5, 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
2455 | { ".tocbss", 7, 0, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, | |
2456 | { NULL, 0, 0, 0, 0 } | |
5d35169e AM |
2457 | }; |
2458 | ||
f0abc2a1 AM |
2459 | struct _ppc64_elf_section_data |
2460 | { | |
2461 | struct bfd_elf_section_data elf; | |
411e1bfb AM |
2462 | |
2463 | /* An array with one entry for each opd function descriptor. */ | |
f0abc2a1 AM |
2464 | union |
2465 | { | |
411e1bfb | 2466 | /* Points to the function code section for local opd entries. */ |
f0abc2a1 | 2467 | asection **func_sec; |
411e1bfb | 2468 | /* After editing .opd, adjust references to opd local syms. */ |
f0abc2a1 AM |
2469 | long *adjust; |
2470 | } opd; | |
411e1bfb AM |
2471 | |
2472 | /* An array for toc sections, indexed by offset/8. | |
2473 | Specifies the relocation symbol index used at a given toc offset. */ | |
2474 | unsigned *t_symndx; | |
f0abc2a1 AM |
2475 | }; |
2476 | ||
2477 | #define ppc64_elf_section_data(sec) \ | |
411e1bfb | 2478 | ((struct _ppc64_elf_section_data *) elf_section_data (sec)) |
f0abc2a1 AM |
2479 | |
2480 | static bfd_boolean | |
4ce794b7 | 2481 | ppc64_elf_new_section_hook (bfd *abfd, asection *sec) |
f0abc2a1 AM |
2482 | { |
2483 | struct _ppc64_elf_section_data *sdata; | |
2484 | bfd_size_type amt = sizeof (*sdata); | |
2485 | ||
4ce794b7 | 2486 | sdata = bfd_zalloc (abfd, amt); |
f0abc2a1 AM |
2487 | if (sdata == NULL) |
2488 | return FALSE; | |
4ce794b7 | 2489 | sec->used_by_bfd = sdata; |
f0abc2a1 AM |
2490 | |
2491 | return _bfd_elf_new_section_hook (abfd, sec); | |
2492 | } | |
5bd4f169 | 2493 | \f |
65f38f15 AM |
2494 | /* The following functions are specific to the ELF linker, while |
2495 | functions above are used generally. Those named ppc64_elf_* are | |
2496 | called by the main ELF linker code. They appear in this file more | |
2497 | or less in the order in which they are called. eg. | |
2498 | ppc64_elf_check_relocs is called early in the link process, | |
2499 | ppc64_elf_finish_dynamic_sections is one of the last functions | |
e86ce104 AM |
2500 | called. |
2501 | ||
2502 | PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that | |
2503 | functions have both a function code symbol and a function descriptor | |
2504 | symbol. A call to foo in a relocatable object file looks like: | |
2505 | ||
2506 | . .text | |
2507 | . x: | |
2508 | . bl .foo | |
2509 | . nop | |
2510 | ||
2511 | The function definition in another object file might be: | |
2512 | ||
2513 | . .section .opd | |
2514 | . foo: .quad .foo | |
2515 | . .quad .TOC.@tocbase | |
2516 | . .quad 0 | |
2517 | . | |
2518 | . .text | |
2519 | . .foo: blr | |
2520 | ||
2521 | When the linker resolves the call during a static link, the branch | |
2522 | unsurprisingly just goes to .foo and the .opd information is unused. | |
2523 | If the function definition is in a shared library, things are a little | |
2524 | different: The call goes via a plt call stub, the opd information gets | |
2525 | copied to the plt, and the linker patches the nop. | |
2526 | ||
2527 | . x: | |
2528 | . bl .foo_stub | |
2529 | . ld 2,40(1) | |
2530 | . | |
2531 | . | |
2532 | . .foo_stub: | |
2533 | . addis 12,2,Lfoo@toc@ha # in practice, the call stub | |
411e1bfb | 2534 | . addi 12,12,Lfoo@toc@l # is slightly optimized, but |
e86ce104 AM |
2535 | . std 2,40(1) # this is the general idea |
2536 | . ld 11,0(12) | |
2537 | . ld 2,8(12) | |
2538 | . mtctr 11 | |
2539 | . ld 11,16(12) | |
2540 | . bctr | |
2541 | . | |
2542 | . .section .plt | |
2543 | . Lfoo: reloc (R_PPC64_JMP_SLOT, foo) | |
2544 | ||
2545 | The "reloc ()" notation is supposed to indicate that the linker emits | |
2546 | an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd | |
2547 | copying. | |
2548 | ||
2549 | What are the difficulties here? Well, firstly, the relocations | |
2550 | examined by the linker in check_relocs are against the function code | |
2551 | sym .foo, while the dynamic relocation in the plt is emitted against | |
2552 | the function descriptor symbol, foo. Somewhere along the line, we need | |
2553 | to carefully copy dynamic link information from one symbol to the other. | |
2554 | Secondly, the generic part of the elf linker will make .foo a dynamic | |
2555 | symbol as is normal for most other backends. We need foo dynamic | |
2556 | instead, at least for an application final link. However, when | |
2557 | creating a shared library containing foo, we need to have both symbols | |
2558 | dynamic so that references to .foo are satisfied during the early | |
2559 | stages of linking. Otherwise the linker might decide to pull in a | |
41bd81ab | 2560 | definition from some other object, eg. a static library. */ |
65f38f15 AM |
2561 | |
2562 | /* The linker needs to keep track of the number of relocs that it | |
2563 | decides to copy as dynamic relocs in check_relocs for each symbol. | |
2564 | This is so that it can later discard them if they are found to be | |
2565 | unnecessary. We store the information in a field extending the | |
2566 | regular ELF linker hash table. */ | |
2567 | ||
2568 | struct ppc_dyn_relocs | |
2569 | { | |
2570 | struct ppc_dyn_relocs *next; | |
2571 | ||
2572 | /* The input section of the reloc. */ | |
2573 | asection *sec; | |
2574 | ||
2575 | /* Total number of relocs copied for the input section. */ | |
2576 | bfd_size_type count; | |
2577 | ||
2578 | /* Number of pc-relative relocs copied for the input section. */ | |
2579 | bfd_size_type pc_count; | |
2580 | }; | |
2581 | ||
411e1bfb AM |
2582 | /* Track GOT entries needed for a given symbol. We might need more |
2583 | than one got entry per symbol. */ | |
2584 | struct got_entry | |
2585 | { | |
2586 | struct got_entry *next; | |
2587 | ||
e7b938ca | 2588 | /* The symbol addend that we'll be placing in the GOT. */ |
411e1bfb AM |
2589 | bfd_vma addend; |
2590 | ||
e717da7e AM |
2591 | /* Unlike other ELF targets, we use separate GOT entries for the same |
2592 | symbol referenced from different input files. This is to support | |
2593 | automatic multiple TOC/GOT sections, where the TOC base can vary | |
2594 | from one input file to another. | |
2595 | ||
2596 | Point to the BFD owning this GOT entry. */ | |
2597 | bfd *owner; | |
2598 | ||
2599 | /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD, | |
2600 | TLS_TPREL or TLS_DTPREL for tls entries. */ | |
2601 | char tls_type; | |
2602 | ||
e7b938ca | 2603 | /* Reference count until size_dynamic_sections, GOT offset thereafter. */ |
411e1bfb AM |
2604 | union |
2605 | { | |
2606 | bfd_signed_vma refcount; | |
2607 | bfd_vma offset; | |
2608 | } got; | |
411e1bfb AM |
2609 | }; |
2610 | ||
2611 | /* The same for PLT. */ | |
2612 | struct plt_entry | |
2613 | { | |
2614 | struct plt_entry *next; | |
2615 | ||
2616 | bfd_vma addend; | |
2617 | ||
2618 | union | |
2619 | { | |
2620 | bfd_signed_vma refcount; | |
2621 | bfd_vma offset; | |
2622 | } plt; | |
2623 | }; | |
2624 | ||
65f38f15 | 2625 | /* Of those relocs that might be copied as dynamic relocs, this macro |
58ac9f71 AM |
2626 | selects those that must be copied when linking a shared library, |
2627 | even when the symbol is local. */ | |
65f38f15 | 2628 | |
411e1bfb | 2629 | #define MUST_BE_DYN_RELOC(RTYPE) \ |
805fc799 AM |
2630 | ((RTYPE) != R_PPC64_REL32 \ |
2631 | && (RTYPE) != R_PPC64_REL64 \ | |
04c9666a | 2632 | && (RTYPE) != R_PPC64_REL30) |
65f38f15 | 2633 | |
f4656909 AM |
2634 | /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid |
2635 | copying dynamic variables from a shared lib into an app's dynbss | |
2636 | section, and instead use a dynamic relocation to point into the | |
5d35169e AM |
2637 | shared lib. With code that gcc generates, it's vital that this be |
2638 | enabled; In the PowerPC64 ABI, the address of a function is actually | |
2639 | the address of a function descriptor, which resides in the .opd | |
2640 | section. gcc uses the descriptor directly rather than going via the | |
2641 | GOT as some other ABI's do, which means that initialized function | |
2642 | pointers must reference the descriptor. Thus, a function pointer | |
2643 | initialized to the address of a function in a shared library will | |
2644 | either require a copy reloc, or a dynamic reloc. Using a copy reloc | |
4cc11e76 | 2645 | redefines the function descriptor symbol to point to the copy. This |
5d35169e AM |
2646 | presents a problem as a plt entry for that function is also |
2647 | initialized from the function descriptor symbol and the copy reloc | |
2648 | may not be initialized first. */ | |
a23b6845 | 2649 | #define ELIMINATE_COPY_RELOCS 1 |
f4656909 | 2650 | |
721956f4 AM |
2651 | /* Section name for stubs is the associated section name plus this |
2652 | string. */ | |
2653 | #define STUB_SUFFIX ".stub" | |
2654 | ||
2655 | /* Linker stubs. | |
2656 | ppc_stub_long_branch: | |
2657 | Used when a 14 bit branch (or even a 24 bit branch) can't reach its | |
2658 | destination, but a 24 bit branch in a stub section will reach. | |
2659 | . b dest | |
2660 | ||
2661 | ppc_stub_plt_branch: | |
2662 | Similar to the above, but a 24 bit branch in the stub section won't | |
2663 | reach its destination. | |
87e226ce AM |
2664 | . addis %r12,%r2,xxx@toc@ha |
2665 | . ld %r11,xxx@toc@l(%r12) | |
721956f4 AM |
2666 | . mtctr %r11 |
2667 | . bctr | |
2668 | ||
2669 | ppc_stub_plt_call: | |
2670 | Used to call a function in a shared library. | |
87e226ce | 2671 | . addis %r12,%r2,xxx@toc@ha |
721956f4 | 2672 | . std %r2,40(%r1) |
87e226ce AM |
2673 | . ld %r11,xxx+0@toc@l(%r12) |
2674 | . ld %r2,xxx+8@toc@l(%r12) | |
721956f4 | 2675 | . mtctr %r11 |
87e226ce | 2676 | . ld %r11,xxx+16@toc@l(%r12) |
721956f4 | 2677 | . bctr |
ad8e1ba5 AM |
2678 | |
2679 | ppc_stub_long_branch and ppc_stub_plt_branch may also have additional | |
2680 | code to adjust the value and save r2 to support multiple toc sections. | |
2681 | A ppc_stub_long_branch with an r2 offset looks like: | |
2682 | . std %r2,40(%r1) | |
2683 | . addis %r2,%r2,off@ha | |
2684 | . addi %r2,%r2,off@l | |
2685 | . b dest | |
2686 | ||
2687 | A ppc_stub_plt_branch with an r2 offset looks like: | |
2688 | . std %r2,40(%r1) | |
2689 | . addis %r12,%r2,xxx@toc@ha | |
2690 | . ld %r11,xxx@toc@l(%r12) | |
2691 | . addis %r2,%r2,off@ha | |
2692 | . addi %r2,%r2,off@l | |
2693 | . mtctr %r11 | |
2694 | . bctr | |
721956f4 AM |
2695 | */ |
2696 | ||
2697 | enum ppc_stub_type { | |
2698 | ppc_stub_none, | |
2699 | ppc_stub_long_branch, | |
ad8e1ba5 | 2700 | ppc_stub_long_branch_r2off, |
721956f4 | 2701 | ppc_stub_plt_branch, |
ad8e1ba5 | 2702 | ppc_stub_plt_branch_r2off, |
721956f4 AM |
2703 | ppc_stub_plt_call |
2704 | }; | |
2705 | ||
2706 | struct ppc_stub_hash_entry { | |
2707 | ||
2708 | /* Base hash table entry structure. */ | |
2709 | struct bfd_hash_entry root; | |
2710 | ||
ad8e1ba5 AM |
2711 | enum ppc_stub_type stub_type; |
2712 | ||
721956f4 AM |
2713 | /* The stub section. */ |
2714 | asection *stub_sec; | |
2715 | ||
2716 | /* Offset within stub_sec of the beginning of this stub. */ | |
2717 | bfd_vma stub_offset; | |
2718 | ||
2719 | /* Given the symbol's value and its section we can determine its final | |
2720 | value when building the stubs (so the stub knows where to jump. */ | |
2721 | bfd_vma target_value; | |
2722 | asection *target_section; | |
2723 | ||
721956f4 AM |
2724 | /* The symbol table entry, if any, that this was derived from. */ |
2725 | struct ppc_link_hash_entry *h; | |
2726 | ||
411e1bfb AM |
2727 | /* And the reloc addend that this was derived from. */ |
2728 | bfd_vma addend; | |
2729 | ||
721956f4 AM |
2730 | /* Where this stub is being called from, or, in the case of combined |
2731 | stub sections, the first input section in the group. */ | |
2732 | asection *id_sec; | |
2733 | }; | |
2734 | ||
2735 | struct ppc_branch_hash_entry { | |
2736 | ||
2737 | /* Base hash table entry structure. */ | |
2738 | struct bfd_hash_entry root; | |
2739 | ||
2740 | /* Offset within .branch_lt. */ | |
2741 | unsigned int offset; | |
2742 | ||
2743 | /* Generation marker. */ | |
2744 | unsigned int iter; | |
2745 | }; | |
65f38f15 AM |
2746 | |
2747 | struct ppc_link_hash_entry | |
2748 | { | |
2749 | struct elf_link_hash_entry elf; | |
2750 | ||
721956f4 AM |
2751 | /* A pointer to the most recently used stub hash entry against this |
2752 | symbol. */ | |
2753 | struct ppc_stub_hash_entry *stub_cache; | |
2754 | ||
65f38f15 AM |
2755 | /* Track dynamic relocs copied for this symbol. */ |
2756 | struct ppc_dyn_relocs *dyn_relocs; | |
e86ce104 | 2757 | |
721956f4 AM |
2758 | /* Link between function code and descriptor symbols. */ |
2759 | struct elf_link_hash_entry *oh; | |
2760 | ||
e86ce104 AM |
2761 | /* Flag function code and descriptor symbols. */ |
2762 | unsigned int is_func:1; | |
2763 | unsigned int is_func_descriptor:1; | |
1e2f5b6e | 2764 | unsigned int is_entry:1; |
411e1bfb | 2765 | |
754021d0 AM |
2766 | /* Whether global opd sym has been adjusted or not. */ |
2767 | unsigned int adjust_done:1; | |
2768 | ||
411e1bfb | 2769 | /* Contexts in which symbol is used in the GOT (or TOC). |
e7b938ca AM |
2770 | TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the |
2771 | corresponding relocs are encountered during check_relocs. | |
2772 | tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to | |
2773 | indicate the corresponding GOT entry type is not needed. | |
2774 | tls_optimize may also set TLS_TPRELGD when a GD reloc turns into | |
2775 | a TPREL one. We use a separate flag rather than setting TPREL | |
2776 | just for convenience in distinguishing the two cases. */ | |
2777 | #define TLS_GD 1 /* GD reloc. */ | |
2778 | #define TLS_LD 2 /* LD reloc. */ | |
2779 | #define TLS_TPREL 4 /* TPREL reloc, => IE. */ | |
2780 | #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */ | |
2781 | #define TLS_TLS 16 /* Any TLS reloc. */ | |
2782 | #define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */ | |
2783 | #define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */ | |
2784 | char tls_mask; | |
65f38f15 AM |
2785 | }; |
2786 | ||
2787 | /* ppc64 ELF linker hash table. */ | |
2788 | ||
2789 | struct ppc_link_hash_table | |
2790 | { | |
2791 | struct elf_link_hash_table elf; | |
2792 | ||
721956f4 AM |
2793 | /* The stub hash table. */ |
2794 | struct bfd_hash_table stub_hash_table; | |
2795 | ||
2796 | /* Another hash table for plt_branch stubs. */ | |
2797 | struct bfd_hash_table branch_hash_table; | |
2798 | ||
2799 | /* Linker stub bfd. */ | |
2800 | bfd *stub_bfd; | |
2801 | ||
2802 | /* Linker call-backs. */ | |
4ce794b7 AM |
2803 | asection * (*add_stub_section) (const char *, asection *); |
2804 | void (*layout_sections_again) (void); | |
721956f4 AM |
2805 | |
2806 | /* Array to keep track of which stub sections have been created, and | |
2807 | information on stub grouping. */ | |
2808 | struct map_stub { | |
2809 | /* This is the section to which stubs in the group will be attached. */ | |
2810 | asection *link_sec; | |
2811 | /* The stub section. */ | |
2812 | asection *stub_sec; | |
ad8e1ba5 AM |
2813 | /* Along with elf_gp, specifies the TOC pointer used in this group. */ |
2814 | bfd_vma toc_off; | |
721956f4 AM |
2815 | } *stub_group; |
2816 | ||
ad8e1ba5 AM |
2817 | /* Support for multiple toc sections. */ |
2818 | unsigned int no_multi_toc; | |
2819 | unsigned int multi_toc_needed; | |
2820 | ||
2821 | /* Temp used when calculating TOC pointers. */ | |
2822 | bfd_vma toc_curr; | |
2823 | ||
8f3bab57 AM |
2824 | /* Highest input section id. */ |
2825 | int top_id; | |
2826 | ||
734b6cf9 AM |
2827 | /* Highest output section index. */ |
2828 | int top_index; | |
2829 | ||
2830 | /* List of input sections for each output section. */ | |
2831 | asection **input_list; | |
721956f4 | 2832 | |
65f38f15 | 2833 | /* Short-cuts to get to dynamic linker sections. */ |
4ce794b7 | 2834 | asection *got; |
4ce794b7 AM |
2835 | asection *plt; |
2836 | asection *relplt; | |
2837 | asection *dynbss; | |
2838 | asection *relbss; | |
2839 | asection *glink; | |
82bd7b59 | 2840 | asection *sfpr; |
4ce794b7 AM |
2841 | asection *brlt; |
2842 | asection *relbrlt; | |
ec338859 | 2843 | |
411e1bfb AM |
2844 | /* Shortcut to .__tls_get_addr. */ |
2845 | struct elf_link_hash_entry *tls_get_addr; | |
2846 | ||
9b5ecbd0 AM |
2847 | /* Statistics. */ |
2848 | unsigned long stub_count[ppc_stub_plt_call]; | |
2849 | ||
ad8e1ba5 AM |
2850 | /* Set if we should emit symbols for stubs. */ |
2851 | unsigned int emit_stub_syms; | |
2852 | ||
5d1634d7 | 2853 | /* Set on error. */ |
721956f4 AM |
2854 | unsigned int stub_error; |
2855 | ||
2856 | /* Flag set when small branches are detected. Used to | |
2857 | select suitable defaults for the stub group size. */ | |
2858 | unsigned int has_14bit_branch; | |
2859 | ||
805fc799 AM |
2860 | /* Set if we detect a reference undefined weak symbol. */ |
2861 | unsigned int have_undefweak; | |
2862 | ||
721956f4 AM |
2863 | /* Incremented every time we size stubs. */ |
2864 | unsigned int stub_iteration; | |
5d1634d7 | 2865 | |
ec338859 AM |
2866 | /* Small local sym to section mapping cache. */ |
2867 | struct sym_sec_cache sym_sec; | |
65f38f15 AM |
2868 | }; |
2869 | ||
2870 | /* Get the ppc64 ELF linker hash table from a link_info structure. */ | |
2871 | ||
2872 | #define ppc_hash_table(p) \ | |
2873 | ((struct ppc_link_hash_table *) ((p)->hash)) | |
2874 | ||
721956f4 AM |
2875 | #define ppc_stub_hash_lookup(table, string, create, copy) \ |
2876 | ((struct ppc_stub_hash_entry *) \ | |
2877 | bfd_hash_lookup ((table), (string), (create), (copy))) | |
2878 | ||
2879 | #define ppc_branch_hash_lookup(table, string, create, copy) \ | |
2880 | ((struct ppc_branch_hash_entry *) \ | |
2881 | bfd_hash_lookup ((table), (string), (create), (copy))) | |
2882 | ||
2883 | /* Create an entry in the stub hash table. */ | |
2884 | ||
2885 | static struct bfd_hash_entry * | |
4ce794b7 AM |
2886 | stub_hash_newfunc (struct bfd_hash_entry *entry, |
2887 | struct bfd_hash_table *table, | |
2888 | const char *string) | |
721956f4 AM |
2889 | { |
2890 | /* Allocate the structure if it has not already been allocated by a | |
2891 | subclass. */ | |
2892 | if (entry == NULL) | |
2893 | { | |
2894 | entry = bfd_hash_allocate (table, sizeof (struct ppc_stub_hash_entry)); | |
2895 | if (entry == NULL) | |
2896 | return entry; | |
2897 | } | |
2898 | ||
2899 | /* Call the allocation method of the superclass. */ | |
2900 | entry = bfd_hash_newfunc (entry, table, string); | |
2901 | if (entry != NULL) | |
2902 | { | |
2903 | struct ppc_stub_hash_entry *eh; | |
2904 | ||
2905 | /* Initialize the local fields. */ | |
2906 | eh = (struct ppc_stub_hash_entry *) entry; | |
ad8e1ba5 | 2907 | eh->stub_type = ppc_stub_none; |
721956f4 AM |
2908 | eh->stub_sec = NULL; |
2909 | eh->stub_offset = 0; | |
2910 | eh->target_value = 0; | |
2911 | eh->target_section = NULL; | |
721956f4 AM |
2912 | eh->h = NULL; |
2913 | eh->id_sec = NULL; | |
2914 | } | |
2915 | ||
2916 | return entry; | |
2917 | } | |
2918 | ||
2919 | /* Create an entry in the branch hash table. */ | |
2920 | ||
2921 | static struct bfd_hash_entry * | |
4ce794b7 AM |
2922 | branch_hash_newfunc (struct bfd_hash_entry *entry, |
2923 | struct bfd_hash_table *table, | |
2924 | const char *string) | |
721956f4 AM |
2925 | { |
2926 | /* Allocate the structure if it has not already been allocated by a | |
2927 | subclass. */ | |
2928 | if (entry == NULL) | |
2929 | { | |
2930 | entry = bfd_hash_allocate (table, sizeof (struct ppc_branch_hash_entry)); | |
2931 | if (entry == NULL) | |
2932 | return entry; | |
2933 | } | |
2934 | ||
2935 | /* Call the allocation method of the superclass. */ | |
2936 | entry = bfd_hash_newfunc (entry, table, string); | |
2937 | if (entry != NULL) | |
2938 | { | |
2939 | struct ppc_branch_hash_entry *eh; | |
2940 | ||
2941 | /* Initialize the local fields. */ | |
2942 | eh = (struct ppc_branch_hash_entry *) entry; | |
2943 | eh->offset = 0; | |
2944 | eh->iter = 0; | |
2945 | } | |
2946 | ||
2947 | return entry; | |
2948 | } | |
2949 | ||
65f38f15 AM |
2950 | /* Create an entry in a ppc64 ELF linker hash table. */ |
2951 | ||
2952 | static struct bfd_hash_entry * | |
4ce794b7 AM |
2953 | link_hash_newfunc (struct bfd_hash_entry *entry, |
2954 | struct bfd_hash_table *table, | |
2955 | const char *string) | |
65f38f15 AM |
2956 | { |
2957 | /* Allocate the structure if it has not already been allocated by a | |
2958 | subclass. */ | |
2959 | if (entry == NULL) | |
2960 | { | |
2961 | entry = bfd_hash_allocate (table, sizeof (struct ppc_link_hash_entry)); | |
2962 | if (entry == NULL) | |
2963 | return entry; | |
2964 | } | |
2965 | ||
2966 | /* Call the allocation method of the superclass. */ | |
2967 | entry = _bfd_elf_link_hash_newfunc (entry, table, string); | |
2968 | if (entry != NULL) | |
2969 | { | |
2970 | struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) entry; | |
2971 | ||
721956f4 | 2972 | eh->stub_cache = NULL; |
65f38f15 | 2973 | eh->dyn_relocs = NULL; |
721956f4 | 2974 | eh->oh = NULL; |
e86ce104 AM |
2975 | eh->is_func = 0; |
2976 | eh->is_func_descriptor = 0; | |
1e2f5b6e | 2977 | eh->is_entry = 0; |
754021d0 | 2978 | eh->adjust_done = 0; |
e7b938ca | 2979 | eh->tls_mask = 0; |
65f38f15 AM |
2980 | } |
2981 | ||
2982 | return entry; | |
2983 | } | |
2984 | ||
2985 | /* Create a ppc64 ELF linker hash table. */ | |
2986 | ||
2987 | static struct bfd_link_hash_table * | |
4ce794b7 | 2988 | ppc64_elf_link_hash_table_create (bfd *abfd) |
65f38f15 AM |
2989 | { |
2990 | struct ppc_link_hash_table *htab; | |
2991 | bfd_size_type amt = sizeof (struct ppc_link_hash_table); | |
2992 | ||
4ce794b7 | 2993 | htab = bfd_zmalloc (amt); |
65f38f15 AM |
2994 | if (htab == NULL) |
2995 | return NULL; | |
2996 | ||
2997 | if (! _bfd_elf_link_hash_table_init (&htab->elf, abfd, link_hash_newfunc)) | |
2998 | { | |
e2d34d7d | 2999 | free (htab); |
65f38f15 AM |
3000 | return NULL; |
3001 | } | |
3002 | ||
721956f4 AM |
3003 | /* Init the stub hash table too. */ |
3004 | if (!bfd_hash_table_init (&htab->stub_hash_table, stub_hash_newfunc)) | |
3005 | return NULL; | |
3006 | ||
3007 | /* And the branch hash table. */ | |
3008 | if (!bfd_hash_table_init (&htab->branch_hash_table, branch_hash_newfunc)) | |
3009 | return NULL; | |
3010 | ||
3254fd24 AM |
3011 | /* Initializing two fields of the union is just cosmetic. We really |
3012 | only care about glist, but when compiled on a 32-bit host the | |
3013 | bfd_vma fields are larger. Setting the bfd_vma to zero makes | |
3014 | debugger inspection of these fields look nicer. */ | |
3015 | htab->elf.init_refcount.refcount = 0; | |
3016 | htab->elf.init_refcount.glist = NULL; | |
3017 | htab->elf.init_offset.offset = 0; | |
3018 | htab->elf.init_offset.glist = NULL; | |
3019 | ||
65f38f15 AM |
3020 | return &htab->elf.root; |
3021 | } | |
3022 | ||
721956f4 AM |
3023 | /* Free the derived linker hash table. */ |
3024 | ||
3025 | static void | |
4ce794b7 | 3026 | ppc64_elf_link_hash_table_free (struct bfd_link_hash_table *hash) |
721956f4 AM |
3027 | { |
3028 | struct ppc_link_hash_table *ret = (struct ppc_link_hash_table *) hash; | |
3029 | ||
3030 | bfd_hash_table_free (&ret->stub_hash_table); | |
3031 | bfd_hash_table_free (&ret->branch_hash_table); | |
3032 | _bfd_generic_link_hash_table_free (hash); | |
3033 | } | |
3034 | ||
e717da7e AM |
3035 | /* Satisfy the ELF linker by filling in some fields in our fake bfd. */ |
3036 | ||
3037 | void | |
3038 | ppc64_elf_init_stub_bfd (bfd *abfd, struct bfd_link_info *info) | |
3039 | { | |
3040 | struct ppc_link_hash_table *htab; | |
3041 | ||
3042 | elf_elfheader (abfd)->e_ident[EI_CLASS] = ELFCLASS64; | |
3043 | ||
3044 | /* Always hook our dynamic sections into the first bfd, which is the | |
3045 | linker created stub bfd. This ensures that the GOT header is at | |
3046 | the start of the output TOC section. */ | |
3047 | htab = ppc_hash_table (info); | |
3048 | htab->stub_bfd = abfd; | |
3049 | htab->elf.dynobj = abfd; | |
3050 | } | |
3051 | ||
721956f4 AM |
3052 | /* Build a name for an entry in the stub hash table. */ |
3053 | ||
3054 | static char * | |
4ce794b7 AM |
3055 | ppc_stub_name (const asection *input_section, |
3056 | const asection *sym_sec, | |
3057 | const struct ppc_link_hash_entry *h, | |
3058 | const Elf_Internal_Rela *rel) | |
721956f4 AM |
3059 | { |
3060 | char *stub_name; | |
3061 | bfd_size_type len; | |
3062 | ||
3063 | /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31 | |
3064 | offsets from a sym as a branch target? In fact, we could | |
3065 | probably assume the addend is always zero. */ | |
3066 | BFD_ASSERT (((int) rel->r_addend & 0xffffffff) == rel->r_addend); | |
3067 | ||
3068 | if (h) | |
3069 | { | |
3070 | len = 8 + 1 + strlen (h->elf.root.root.string) + 1 + 8 + 1; | |
3071 | stub_name = bfd_malloc (len); | |
3072 | if (stub_name != NULL) | |
3073 | { | |
97b639ba | 3074 | sprintf (stub_name, "%08x.%s+%x", |
721956f4 AM |
3075 | input_section->id & 0xffffffff, |
3076 | h->elf.root.root.string, | |
3077 | (int) rel->r_addend & 0xffffffff); | |
3078 | } | |
3079 | } | |
3080 | else | |
3081 | { | |
ad8e1ba5 | 3082 | len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1; |
721956f4 AM |
3083 | stub_name = bfd_malloc (len); |
3084 | if (stub_name != NULL) | |
3085 | { | |
97b639ba | 3086 | sprintf (stub_name, "%08x.%x:%x+%x", |
721956f4 AM |
3087 | input_section->id & 0xffffffff, |
3088 | sym_sec->id & 0xffffffff, | |
3089 | (int) ELF64_R_SYM (rel->r_info) & 0xffffffff, | |
3090 | (int) rel->r_addend & 0xffffffff); | |
3091 | } | |
3092 | } | |
3093 | return stub_name; | |
3094 | } | |
3095 | ||
3096 | /* Look up an entry in the stub hash. Stub entries are cached because | |
3097 | creating the stub name takes a bit of time. */ | |
3098 | ||
3099 | static struct ppc_stub_hash_entry * | |
4ce794b7 AM |
3100 | ppc_get_stub_entry (const asection *input_section, |
3101 | const asection *sym_sec, | |
3102 | struct elf_link_hash_entry *hash, | |
3103 | const Elf_Internal_Rela *rel, | |
3104 | struct ppc_link_hash_table *htab) | |
721956f4 AM |
3105 | { |
3106 | struct ppc_stub_hash_entry *stub_entry; | |
3107 | struct ppc_link_hash_entry *h = (struct ppc_link_hash_entry *) hash; | |
3108 | const asection *id_sec; | |
3109 | ||
3110 | /* If this input section is part of a group of sections sharing one | |
3111 | stub section, then use the id of the first section in the group. | |
3112 | Stub names need to include a section id, as there may well be | |
3113 | more than one stub used to reach say, printf, and we need to | |
3114 | distinguish between them. */ | |
3115 | id_sec = htab->stub_group[input_section->id].link_sec; | |
3116 | ||
3117 | if (h != NULL && h->stub_cache != NULL | |
3118 | && h->stub_cache->h == h | |
3119 | && h->stub_cache->id_sec == id_sec) | |
3120 | { | |
3121 | stub_entry = h->stub_cache; | |
3122 | } | |
3123 | else | |
3124 | { | |
3125 | char *stub_name; | |
3126 | ||
3127 | stub_name = ppc_stub_name (id_sec, sym_sec, h, rel); | |
3128 | if (stub_name == NULL) | |
3129 | return NULL; | |
3130 | ||
3131 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, | |
b34976b6 | 3132 | stub_name, FALSE, FALSE); |
721956f4 AM |
3133 | if (h != NULL) |
3134 | h->stub_cache = stub_entry; | |
3135 | ||
3136 | free (stub_name); | |
3137 | } | |
3138 | ||
3139 | return stub_entry; | |
3140 | } | |
3141 | ||
3142 | /* Add a new stub entry to the stub hash. Not all fields of the new | |
3143 | stub entry are initialised. */ | |
3144 | ||
3145 | static struct ppc_stub_hash_entry * | |
4ce794b7 AM |
3146 | ppc_add_stub (const char *stub_name, |
3147 | asection *section, | |
3148 | struct ppc_link_hash_table *htab) | |
721956f4 AM |
3149 | { |
3150 | asection *link_sec; | |
3151 | asection *stub_sec; | |
3152 | struct ppc_stub_hash_entry *stub_entry; | |
3153 | ||
3154 | link_sec = htab->stub_group[section->id].link_sec; | |
3155 | stub_sec = htab->stub_group[section->id].stub_sec; | |
3156 | if (stub_sec == NULL) | |
3157 | { | |
3158 | stub_sec = htab->stub_group[link_sec->id].stub_sec; | |
3159 | if (stub_sec == NULL) | |
3160 | { | |
d4c88bbb | 3161 | size_t namelen; |
721956f4 AM |
3162 | bfd_size_type len; |
3163 | char *s_name; | |
3164 | ||
d4c88bbb AM |
3165 | namelen = strlen (link_sec->name); |
3166 | len = namelen + sizeof (STUB_SUFFIX); | |
721956f4 AM |
3167 | s_name = bfd_alloc (htab->stub_bfd, len); |
3168 | if (s_name == NULL) | |
3169 | return NULL; | |
3170 | ||
d4c88bbb AM |
3171 | memcpy (s_name, link_sec->name, namelen); |
3172 | memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX)); | |
721956f4 AM |
3173 | stub_sec = (*htab->add_stub_section) (s_name, link_sec); |
3174 | if (stub_sec == NULL) | |
3175 | return NULL; | |
3176 | htab->stub_group[link_sec->id].stub_sec = stub_sec; | |
3177 | } | |
3178 | htab->stub_group[section->id].stub_sec = stub_sec; | |
3179 | } | |
3180 | ||
3181 | /* Enter this entry into the linker stub hash table. */ | |
3182 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, stub_name, | |
b34976b6 | 3183 | TRUE, FALSE); |
721956f4 AM |
3184 | if (stub_entry == NULL) |
3185 | { | |
3186 | (*_bfd_error_handler) (_("%s: cannot create stub entry %s"), | |
3187 | bfd_archive_filename (section->owner), | |
3188 | stub_name); | |
3189 | return NULL; | |
3190 | } | |
3191 | ||
3192 | stub_entry->stub_sec = stub_sec; | |
3193 | stub_entry->stub_offset = 0; | |
3194 | stub_entry->id_sec = link_sec; | |
3195 | return stub_entry; | |
3196 | } | |
3197 | ||
82bd7b59 AM |
3198 | /* Create sections for linker generated code. */ |
3199 | ||
b34976b6 | 3200 | static bfd_boolean |
4ce794b7 | 3201 | create_linkage_sections (bfd *dynobj, struct bfd_link_info *info) |
82bd7b59 AM |
3202 | { |
3203 | struct ppc_link_hash_table *htab; | |
3204 | flagword flags; | |
3205 | ||
3206 | htab = ppc_hash_table (info); | |
3207 | ||
3208 | /* Create .sfpr for code to save and restore fp regs. */ | |
3209 | flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY | |
3210 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
721956f4 | 3211 | htab->sfpr = bfd_make_section_anyway (dynobj, ".sfpr"); |
82bd7b59 AM |
3212 | if (htab->sfpr == NULL |
3213 | || ! bfd_set_section_flags (dynobj, htab->sfpr, flags) | |
3214 | || ! bfd_set_section_alignment (dynobj, htab->sfpr, 2)) | |
b34976b6 | 3215 | return FALSE; |
82bd7b59 | 3216 | |
721956f4 | 3217 | /* Create .glink for lazy dynamic linking support. */ |
4ce794b7 AM |
3218 | htab->glink = bfd_make_section_anyway (dynobj, ".glink"); |
3219 | if (htab->glink == NULL | |
3220 | || ! bfd_set_section_flags (dynobj, htab->glink, flags) | |
3221 | || ! bfd_set_section_alignment (dynobj, htab->glink, 2)) | |
b34976b6 | 3222 | return FALSE; |
82bd7b59 | 3223 | |
721956f4 AM |
3224 | /* Create .branch_lt for plt_branch stubs. */ |
3225 | flags = (SEC_ALLOC | SEC_LOAD | |
3226 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
4ce794b7 AM |
3227 | htab->brlt = bfd_make_section_anyway (dynobj, ".branch_lt"); |
3228 | if (htab->brlt == NULL | |
3229 | || ! bfd_set_section_flags (dynobj, htab->brlt, flags) | |
3230 | || ! bfd_set_section_alignment (dynobj, htab->brlt, 3)) | |
b34976b6 | 3231 | return FALSE; |
721956f4 AM |
3232 | |
3233 | if (info->shared) | |
3234 | { | |
3235 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | |
3236 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
4ce794b7 AM |
3237 | htab->relbrlt = bfd_make_section_anyway (dynobj, ".rela.branch_lt"); |
3238 | if (!htab->relbrlt | |
3239 | || ! bfd_set_section_flags (dynobj, htab->relbrlt, flags) | |
3240 | || ! bfd_set_section_alignment (dynobj, htab->relbrlt, 3)) | |
b34976b6 | 3241 | return FALSE; |
721956f4 | 3242 | } |
b34976b6 | 3243 | return TRUE; |
82bd7b59 AM |
3244 | } |
3245 | ||
e717da7e AM |
3246 | /* Create .got and .rela.got sections in ABFD, and .got in dynobj if |
3247 | not already done. */ | |
65f38f15 | 3248 | |
b34976b6 | 3249 | static bfd_boolean |
e717da7e | 3250 | create_got_section (bfd *abfd, struct bfd_link_info *info) |
65f38f15 | 3251 | { |
e717da7e AM |
3252 | asection *got, *relgot; |
3253 | flagword flags; | |
3254 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
65f38f15 | 3255 | |
4ce794b7 | 3256 | if (!htab->got) |
e717da7e AM |
3257 | { |
3258 | if (! _bfd_elf_create_got_section (htab->elf.dynobj, info)) | |
3259 | return FALSE; | |
3260 | ||
3261 | htab->got = bfd_get_section_by_name (htab->elf.dynobj, ".got"); | |
3262 | if (!htab->got) | |
3263 | abort (); | |
3264 | } | |
3265 | ||
3266 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY | |
3267 | | SEC_LINKER_CREATED); | |
3268 | ||
3269 | got = bfd_make_section (abfd, ".got"); | |
3270 | if (!got | |
3271 | || !bfd_set_section_flags (abfd, got, flags) | |
3272 | || !bfd_set_section_alignment (abfd, got, 3)) | |
3273 | return FALSE; | |
65f38f15 | 3274 | |
e717da7e AM |
3275 | relgot = bfd_make_section (abfd, ".rela.got"); |
3276 | if (!relgot | |
3277 | || ! bfd_set_section_flags (abfd, relgot, flags | SEC_READONLY) | |
3278 | || ! bfd_set_section_alignment (abfd, relgot, 3)) | |
b34976b6 | 3279 | return FALSE; |
e717da7e AM |
3280 | |
3281 | ppc64_elf_tdata (abfd)->got = got; | |
3282 | ppc64_elf_tdata (abfd)->relgot = relgot; | |
b34976b6 | 3283 | return TRUE; |
65f38f15 | 3284 | } |
5bd4f169 | 3285 | |
82bd7b59 | 3286 | /* Create the dynamic sections, and set up shortcuts. */ |
5bd4f169 | 3287 | |
b34976b6 | 3288 | static bfd_boolean |
4ce794b7 | 3289 | ppc64_elf_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info) |
5bd4f169 | 3290 | { |
65f38f15 | 3291 | struct ppc_link_hash_table *htab; |
5bd4f169 | 3292 | |
65f38f15 | 3293 | if (!_bfd_elf_create_dynamic_sections (dynobj, info)) |
b34976b6 | 3294 | return FALSE; |
65f38f15 | 3295 | |
e717da7e AM |
3296 | htab = ppc_hash_table (info); |
3297 | if (!htab->got) | |
3298 | htab->got = bfd_get_section_by_name (dynobj, ".got"); | |
4ce794b7 AM |
3299 | htab->plt = bfd_get_section_by_name (dynobj, ".plt"); |
3300 | htab->relplt = bfd_get_section_by_name (dynobj, ".rela.plt"); | |
3301 | htab->dynbss = bfd_get_section_by_name (dynobj, ".dynbss"); | |
65f38f15 | 3302 | if (!info->shared) |
4ce794b7 | 3303 | htab->relbss = bfd_get_section_by_name (dynobj, ".rela.bss"); |
65f38f15 | 3304 | |
e717da7e | 3305 | if (!htab->got || !htab->plt || !htab->relplt || !htab->dynbss |
4ce794b7 | 3306 | || (!info->shared && !htab->relbss)) |
65f38f15 AM |
3307 | abort (); |
3308 | ||
b34976b6 | 3309 | return TRUE; |
5bd4f169 AM |
3310 | } |
3311 | ||
65f38f15 AM |
3312 | /* Copy the extra info we tack onto an elf_link_hash_entry. */ |
3313 | ||
3314 | static void | |
9c5bfbb7 AM |
3315 | ppc64_elf_copy_indirect_symbol |
3316 | (const struct elf_backend_data *bed ATTRIBUTE_UNUSED, | |
3317 | struct elf_link_hash_entry *dir, | |
3318 | struct elf_link_hash_entry *ind) | |
65f38f15 AM |
3319 | { |
3320 | struct ppc_link_hash_entry *edir, *eind; | |
81848ca0 | 3321 | flagword mask; |
65f38f15 AM |
3322 | |
3323 | edir = (struct ppc_link_hash_entry *) dir; | |
3324 | eind = (struct ppc_link_hash_entry *) ind; | |
3325 | ||
411e1bfb | 3326 | /* Copy over any dynamic relocs we may have on the indirect sym. */ |
bbd7ec4a | 3327 | if (eind->dyn_relocs != NULL) |
65f38f15 | 3328 | { |
bbd7ec4a AM |
3329 | if (edir->dyn_relocs != NULL) |
3330 | { | |
3331 | struct ppc_dyn_relocs **pp; | |
3332 | struct ppc_dyn_relocs *p; | |
3333 | ||
411e1bfb | 3334 | if (eind->elf.root.type == bfd_link_hash_indirect) |
bbd7ec4a AM |
3335 | abort (); |
3336 | ||
3337 | /* Add reloc counts against the weak sym to the strong sym | |
3338 | list. Merge any entries against the same section. */ | |
3339 | for (pp = &eind->dyn_relocs; (p = *pp) != NULL; ) | |
3340 | { | |
3341 | struct ppc_dyn_relocs *q; | |
3342 | ||
3343 | for (q = edir->dyn_relocs; q != NULL; q = q->next) | |
3344 | if (q->sec == p->sec) | |
3345 | { | |
3346 | q->pc_count += p->pc_count; | |
3347 | q->count += p->count; | |
3348 | *pp = p->next; | |
3349 | break; | |
3350 | } | |
3351 | if (q == NULL) | |
3352 | pp = &p->next; | |
3353 | } | |
3354 | *pp = edir->dyn_relocs; | |
3355 | } | |
3356 | ||
65f38f15 AM |
3357 | edir->dyn_relocs = eind->dyn_relocs; |
3358 | eind->dyn_relocs = NULL; | |
3359 | } | |
65f38f15 | 3360 | |
6349e628 AM |
3361 | edir->is_func |= eind->is_func; |
3362 | edir->is_func_descriptor |= eind->is_func_descriptor; | |
3363 | edir->is_entry |= eind->is_entry; | |
58ac9f71 | 3364 | edir->tls_mask |= eind->tls_mask; |
6349e628 | 3365 | |
81848ca0 | 3366 | mask = (ELF_LINK_HASH_REF_DYNAMIC | ELF_LINK_HASH_REF_REGULAR |
3addb0a9 DJ |
3367 | | ELF_LINK_HASH_REF_REGULAR_NONWEAK | ELF_LINK_NON_GOT_REF |
3368 | | ELF_LINK_HASH_NEEDS_PLT); | |
81848ca0 AM |
3369 | /* If called to transfer flags for a weakdef during processing |
3370 | of elf_adjust_dynamic_symbol, don't copy ELF_LINK_NON_GOT_REF. | |
3371 | We clear it ourselves for ELIMINATE_COPY_RELOCS. */ | |
3372 | if (ELIMINATE_COPY_RELOCS | |
3373 | && eind->elf.root.type != bfd_link_hash_indirect | |
3374 | && (edir->elf.elf_link_hash_flags & ELF_LINK_HASH_DYNAMIC_ADJUSTED) != 0) | |
3375 | mask &= ~ELF_LINK_NON_GOT_REF; | |
3376 | ||
3377 | edir->elf.elf_link_hash_flags |= eind->elf.elf_link_hash_flags & mask; | |
6349e628 AM |
3378 | |
3379 | /* If we were called to copy over info for a weak sym, that's all. */ | |
3380 | if (eind->elf.root.type != bfd_link_hash_indirect) | |
3381 | return; | |
3382 | ||
81848ca0 AM |
3383 | /* Copy over got entries that we may have already seen to the |
3384 | symbol which just became indirect. */ | |
411e1bfb AM |
3385 | if (eind->elf.got.glist != NULL) |
3386 | { | |
3387 | if (edir->elf.got.glist != NULL) | |
3388 | { | |
3389 | struct got_entry **entp; | |
3390 | struct got_entry *ent; | |
3391 | ||
3392 | for (entp = &eind->elf.got.glist; (ent = *entp) != NULL; ) | |
3393 | { | |
3394 | struct got_entry *dent; | |
3395 | ||
3396 | for (dent = edir->elf.got.glist; dent != NULL; dent = dent->next) | |
3397 | if (dent->addend == ent->addend | |
e717da7e | 3398 | && dent->owner == ent->owner |
411e1bfb AM |
3399 | && dent->tls_type == ent->tls_type) |
3400 | { | |
3401 | dent->got.refcount += ent->got.refcount; | |
3402 | *entp = ent->next; | |
3403 | break; | |
3404 | } | |
3405 | if (dent == NULL) | |
3406 | entp = &ent->next; | |
3407 | } | |
3408 | *entp = edir->elf.got.glist; | |
3409 | } | |
3410 | ||
3411 | edir->elf.got.glist = eind->elf.got.glist; | |
3412 | eind->elf.got.glist = NULL; | |
3413 | } | |
3414 | ||
3415 | /* And plt entries. */ | |
3416 | if (eind->elf.plt.plist != NULL) | |
3417 | { | |
3418 | if (edir->elf.plt.plist != NULL) | |
3419 | { | |
3420 | struct plt_entry **entp; | |
3421 | struct plt_entry *ent; | |
3422 | ||
3423 | for (entp = &eind->elf.plt.plist; (ent = *entp) != NULL; ) | |
3424 | { | |
3425 | struct plt_entry *dent; | |
3426 | ||
3427 | for (dent = edir->elf.plt.plist; dent != NULL; dent = dent->next) | |
3428 | if (dent->addend == ent->addend) | |
3429 | { | |
3430 | dent->plt.refcount += ent->plt.refcount; | |
3431 | *entp = ent->next; | |
3432 | break; | |
3433 | } | |
3434 | if (dent == NULL) | |
3435 | entp = &ent->next; | |
3436 | } | |
3437 | *entp = edir->elf.plt.plist; | |
3438 | } | |
3439 | ||
3440 | edir->elf.plt.plist = eind->elf.plt.plist; | |
3441 | eind->elf.plt.plist = NULL; | |
3442 | } | |
3443 | ||
411e1bfb AM |
3444 | if (edir->elf.dynindx == -1) |
3445 | { | |
3446 | edir->elf.dynindx = eind->elf.dynindx; | |
3447 | edir->elf.dynstr_index = eind->elf.dynstr_index; | |
3448 | eind->elf.dynindx = -1; | |
3449 | eind->elf.dynstr_index = 0; | |
3450 | } | |
3451 | else | |
3452 | BFD_ASSERT (eind->elf.dynindx == -1); | |
3453 | } | |
3454 | ||
3455 | /* Set a flag, used by ppc64_elf_gc_mark_hook, on the entry symbol and | |
3456 | symbols undefined on the command-line. */ | |
3457 | ||
3458 | bfd_boolean | |
4ce794b7 | 3459 | ppc64_elf_mark_entry_syms (struct bfd_link_info *info) |
411e1bfb AM |
3460 | { |
3461 | struct ppc_link_hash_table *htab; | |
3462 | struct bfd_sym_chain *sym; | |
3463 | ||
3464 | htab = ppc_hash_table (info); | |
3465 | for (sym = info->gc_sym_list; sym; sym = sym->next) | |
3466 | { | |
3467 | struct elf_link_hash_entry *h; | |
3468 | ||
3469 | h = elf_link_hash_lookup (&htab->elf, sym->name, FALSE, FALSE, FALSE); | |
3470 | if (h != NULL) | |
3471 | ((struct ppc_link_hash_entry *) h)->is_entry = 1; | |
3472 | } | |
3473 | return TRUE; | |
3474 | } | |
3475 | ||
3476 | static bfd_boolean | |
4ce794b7 AM |
3477 | update_local_sym_info (bfd *abfd, Elf_Internal_Shdr *symtab_hdr, |
3478 | unsigned long r_symndx, bfd_vma r_addend, int tls_type) | |
411e1bfb AM |
3479 | { |
3480 | struct got_entry **local_got_ents = elf_local_got_ents (abfd); | |
e7b938ca | 3481 | char *local_got_tls_masks; |
411e1bfb AM |
3482 | |
3483 | if (local_got_ents == NULL) | |
3484 | { | |
3485 | bfd_size_type size = symtab_hdr->sh_info; | |
3486 | ||
e7b938ca | 3487 | size *= sizeof (*local_got_ents) + sizeof (*local_got_tls_masks); |
4ce794b7 | 3488 | local_got_ents = bfd_zalloc (abfd, size); |
411e1bfb AM |
3489 | if (local_got_ents == NULL) |
3490 | return FALSE; | |
3491 | elf_local_got_ents (abfd) = local_got_ents; | |
3492 | } | |
3493 | ||
3494 | if ((tls_type & TLS_EXPLICIT) == 0) | |
3495 | { | |
3496 | struct got_entry *ent; | |
3497 | ||
3498 | for (ent = local_got_ents[r_symndx]; ent != NULL; ent = ent->next) | |
e717da7e AM |
3499 | if (ent->addend == r_addend |
3500 | && ent->owner == abfd | |
3501 | && ent->tls_type == tls_type) | |
411e1bfb AM |
3502 | break; |
3503 | if (ent == NULL) | |
3504 | { | |
3505 | bfd_size_type amt = sizeof (*ent); | |
4ce794b7 | 3506 | ent = bfd_alloc (abfd, amt); |
411e1bfb AM |
3507 | if (ent == NULL) |
3508 | return FALSE; | |
3509 | ent->next = local_got_ents[r_symndx]; | |
3510 | ent->addend = r_addend; | |
e717da7e | 3511 | ent->owner = abfd; |
411e1bfb AM |
3512 | ent->tls_type = tls_type; |
3513 | ent->got.refcount = 0; | |
3514 | local_got_ents[r_symndx] = ent; | |
3515 | } | |
3516 | ent->got.refcount += 1; | |
3517 | } | |
3518 | ||
e7b938ca AM |
3519 | local_got_tls_masks = (char *) (local_got_ents + symtab_hdr->sh_info); |
3520 | local_got_tls_masks[r_symndx] |= tls_type; | |
411e1bfb | 3521 | return TRUE; |
65f38f15 AM |
3522 | } |
3523 | ||
411e1bfb | 3524 | static bfd_boolean |
4ce794b7 | 3525 | update_plt_info (bfd *abfd, struct ppc_link_hash_entry *eh, bfd_vma addend) |
1e2f5b6e | 3526 | { |
411e1bfb | 3527 | struct plt_entry *ent; |
1e2f5b6e | 3528 | |
411e1bfb AM |
3529 | for (ent = eh->elf.plt.plist; ent != NULL; ent = ent->next) |
3530 | if (ent->addend == addend) | |
3531 | break; | |
3532 | if (ent == NULL) | |
1e2f5b6e | 3533 | { |
411e1bfb | 3534 | bfd_size_type amt = sizeof (*ent); |
4ce794b7 | 3535 | ent = bfd_alloc (abfd, amt); |
411e1bfb AM |
3536 | if (ent == NULL) |
3537 | return FALSE; | |
3538 | ent->next = eh->elf.plt.plist; | |
3539 | ent->addend = addend; | |
3540 | ent->plt.refcount = 0; | |
3541 | eh->elf.plt.plist = ent; | |
1e2f5b6e | 3542 | } |
411e1bfb AM |
3543 | ent->plt.refcount += 1; |
3544 | eh->elf.elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT; | |
3545 | eh->is_func = 1; | |
b34976b6 | 3546 | return TRUE; |
1e2f5b6e AM |
3547 | } |
3548 | ||
50bc7936 AM |
3549 | /* Find the function descriptor hash entry from the given function code |
3550 | hash entry FH. Link the entries via their OH fields. */ | |
3551 | static struct ppc_link_hash_entry * | |
3552 | get_fdh (struct ppc_link_hash_entry *fh, struct ppc_link_hash_table *htab) | |
3553 | { | |
3554 | struct ppc_link_hash_entry *fdh = (struct ppc_link_hash_entry *) fh->oh; | |
3555 | ||
3556 | if (fdh == NULL) | |
3557 | { | |
3558 | const char *fd_name = fh->elf.root.root.string + 1; | |
3559 | ||
3560 | fdh = (struct ppc_link_hash_entry *) | |
3561 | elf_link_hash_lookup (&htab->elf, fd_name, FALSE, FALSE, FALSE); | |
3562 | if (fdh != NULL) | |
3563 | { | |
3564 | fdh->is_func_descriptor = 1; | |
3565 | fdh->oh = &fh->elf; | |
3566 | fh->is_func = 1; | |
3567 | fh->oh = &fdh->elf; | |
3568 | } | |
3569 | } | |
3570 | ||
3571 | return fdh; | |
3572 | } | |
3573 | ||
5bd4f169 | 3574 | /* Look through the relocs for a section during the first phase, and |
65f38f15 | 3575 | calculate needed space in the global offset table, procedure |
5d1634d7 | 3576 | linkage table, and dynamic reloc sections. */ |
5bd4f169 | 3577 | |
b34976b6 | 3578 | static bfd_boolean |
4ce794b7 AM |
3579 | ppc64_elf_check_relocs (bfd *abfd, struct bfd_link_info *info, |
3580 | asection *sec, const Elf_Internal_Rela *relocs) | |
5bd4f169 | 3581 | { |
65f38f15 | 3582 | struct ppc_link_hash_table *htab; |
5bd4f169 AM |
3583 | Elf_Internal_Shdr *symtab_hdr; |
3584 | struct elf_link_hash_entry **sym_hashes, **sym_hashes_end; | |
3585 | const Elf_Internal_Rela *rel; | |
3586 | const Elf_Internal_Rela *rel_end; | |
5bd4f169 | 3587 | asection *sreloc; |
1e2f5b6e | 3588 | asection **opd_sym_map; |
5bd4f169 | 3589 | |
1049f94e | 3590 | if (info->relocatable) |
b34976b6 | 3591 | return TRUE; |
5bd4f169 | 3592 | |
680a3378 AM |
3593 | /* Don't do anything special with non-loaded, non-alloced sections. |
3594 | In particular, any relocs in such sections should not affect GOT | |
3595 | and PLT reference counting (ie. we don't allow them to create GOT | |
3596 | or PLT entries), there's no possibility or desire to optimize TLS | |
3597 | relocs, and there's not much point in propagating relocs to shared | |
3598 | libs that the dynamic linker won't relocate. */ | |
3599 | if ((sec->flags & SEC_ALLOC) == 0) | |
3600 | return TRUE; | |
3601 | ||
65f38f15 | 3602 | htab = ppc_hash_table (info); |
5bd4f169 | 3603 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
5bd4f169 AM |
3604 | |
3605 | sym_hashes = elf_sym_hashes (abfd); | |
3606 | sym_hashes_end = (sym_hashes | |
1e2f5b6e AM |
3607 | + symtab_hdr->sh_size / sizeof (Elf64_External_Sym) |
3608 | - symtab_hdr->sh_info); | |
5bd4f169 AM |
3609 | |
3610 | sreloc = NULL; | |
1e2f5b6e AM |
3611 | opd_sym_map = NULL; |
3612 | if (strcmp (bfd_get_section_name (abfd, sec), ".opd") == 0) | |
3613 | { | |
3614 | /* Garbage collection needs some extra help with .opd sections. | |
3615 | We don't want to necessarily keep everything referenced by | |
3616 | relocs in .opd, as that would keep all functions. Instead, | |
3617 | if we reference an .opd symbol (a function descriptor), we | |
3618 | want to keep the function code symbol's section. This is | |
3619 | easy for global symbols, but for local syms we need to keep | |
3620 | information about the associated function section. Later, if | |
3621 | edit_opd deletes entries, we'll use this array to adjust | |
3622 | local syms in .opd. */ | |
3623 | union opd_info { | |
3624 | asection *func_section; | |
3625 | long entry_adjust; | |
3626 | }; | |
3627 | bfd_size_type amt; | |
3628 | ||
3629 | amt = sec->_raw_size * sizeof (union opd_info) / 24; | |
4ce794b7 | 3630 | opd_sym_map = bfd_zalloc (abfd, amt); |
1e2f5b6e | 3631 | if (opd_sym_map == NULL) |
b34976b6 | 3632 | return FALSE; |
f0abc2a1 | 3633 | ppc64_elf_section_data (sec)->opd.func_sec = opd_sym_map; |
1e2f5b6e | 3634 | } |
5bd4f169 | 3635 | |
82bd7b59 AM |
3636 | if (htab->sfpr == NULL |
3637 | && !create_linkage_sections (htab->elf.dynobj, info)) | |
b34976b6 | 3638 | return FALSE; |
82bd7b59 | 3639 | |
5bd4f169 AM |
3640 | rel_end = relocs + sec->reloc_count; |
3641 | for (rel = relocs; rel < rel_end; rel++) | |
3642 | { | |
3643 | unsigned long r_symndx; | |
3644 | struct elf_link_hash_entry *h; | |
04c9666a | 3645 | enum elf_ppc64_reloc_type r_type; |
411e1bfb | 3646 | int tls_type = 0; |
5bd4f169 AM |
3647 | |
3648 | r_symndx = ELF64_R_SYM (rel->r_info); | |
3649 | if (r_symndx < symtab_hdr->sh_info) | |
3650 | h = NULL; | |
3651 | else | |
3652 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
3653 | ||
4ce794b7 | 3654 | r_type = ELF64_R_TYPE (rel->r_info); |
a33d1f77 | 3655 | switch (r_type) |
5bd4f169 | 3656 | { |
411e1bfb AM |
3657 | case R_PPC64_GOT_TLSLD16: |
3658 | case R_PPC64_GOT_TLSLD16_LO: | |
3659 | case R_PPC64_GOT_TLSLD16_HI: | |
3660 | case R_PPC64_GOT_TLSLD16_HA: | |
e717da7e | 3661 | ppc64_tlsld_got (abfd)->refcount += 1; |
951fd09b | 3662 | tls_type = TLS_TLS | TLS_LD; |
411e1bfb AM |
3663 | goto dogottls; |
3664 | ||
3665 | case R_PPC64_GOT_TLSGD16: | |
3666 | case R_PPC64_GOT_TLSGD16_LO: | |
3667 | case R_PPC64_GOT_TLSGD16_HI: | |
3668 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b | 3669 | tls_type = TLS_TLS | TLS_GD; |
411e1bfb AM |
3670 | goto dogottls; |
3671 | ||
3672 | case R_PPC64_GOT_TPREL16_DS: | |
3673 | case R_PPC64_GOT_TPREL16_LO_DS: | |
3674 | case R_PPC64_GOT_TPREL16_HI: | |
3675 | case R_PPC64_GOT_TPREL16_HA: | |
3676 | if (info->shared) | |
3677 | info->flags |= DF_STATIC_TLS; | |
3678 | tls_type = TLS_TLS | TLS_TPREL; | |
3679 | goto dogottls; | |
3680 | ||
3681 | case R_PPC64_GOT_DTPREL16_DS: | |
3682 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
3683 | case R_PPC64_GOT_DTPREL16_HI: | |
3684 | case R_PPC64_GOT_DTPREL16_HA: | |
3685 | tls_type = TLS_TLS | TLS_DTPREL; | |
3686 | dogottls: | |
3687 | sec->has_tls_reloc = 1; | |
3688 | /* Fall thru */ | |
3689 | ||
5bd4f169 | 3690 | case R_PPC64_GOT16: |
5bd4f169 | 3691 | case R_PPC64_GOT16_DS: |
65f38f15 AM |
3692 | case R_PPC64_GOT16_HA: |
3693 | case R_PPC64_GOT16_HI: | |
3694 | case R_PPC64_GOT16_LO: | |
5bd4f169 | 3695 | case R_PPC64_GOT16_LO_DS: |
65f38f15 | 3696 | /* This symbol requires a global offset table entry. */ |
ad8e1ba5 | 3697 | sec->has_gp_reloc = 1; |
e717da7e AM |
3698 | if (ppc64_elf_tdata (abfd)->got == NULL |
3699 | && !create_got_section (abfd, info)) | |
b34976b6 | 3700 | return FALSE; |
5bd4f169 AM |
3701 | |
3702 | if (h != NULL) | |
3703 | { | |
411e1bfb AM |
3704 | struct ppc_link_hash_entry *eh; |
3705 | struct got_entry *ent; | |
65f38f15 | 3706 | |
411e1bfb AM |
3707 | eh = (struct ppc_link_hash_entry *) h; |
3708 | for (ent = eh->elf.got.glist; ent != NULL; ent = ent->next) | |
3709 | if (ent->addend == rel->r_addend | |
e717da7e | 3710 | && ent->owner == abfd |
411e1bfb AM |
3711 | && ent->tls_type == tls_type) |
3712 | break; | |
3713 | if (ent == NULL) | |
5bd4f169 | 3714 | { |
411e1bfb | 3715 | bfd_size_type amt = sizeof (*ent); |
4ce794b7 | 3716 | ent = bfd_alloc (abfd, amt); |
411e1bfb | 3717 | if (ent == NULL) |
b34976b6 | 3718 | return FALSE; |
411e1bfb AM |
3719 | ent->next = eh->elf.got.glist; |
3720 | ent->addend = rel->r_addend; | |
e717da7e | 3721 | ent->owner = abfd; |
411e1bfb AM |
3722 | ent->tls_type = tls_type; |
3723 | ent->got.refcount = 0; | |
3724 | eh->elf.got.glist = ent; | |
5bd4f169 | 3725 | } |
411e1bfb | 3726 | ent->got.refcount += 1; |
e7b938ca | 3727 | eh->tls_mask |= tls_type; |
5bd4f169 | 3728 | } |
411e1bfb AM |
3729 | else |
3730 | /* This is a global offset table entry for a local symbol. */ | |
3731 | if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
3732 | rel->r_addend, tls_type)) | |
3733 | return FALSE; | |
5bd4f169 AM |
3734 | break; |
3735 | ||
5bd4f169 | 3736 | case R_PPC64_PLT16_HA: |
65f38f15 AM |
3737 | case R_PPC64_PLT16_HI: |
3738 | case R_PPC64_PLT16_LO: | |
3739 | case R_PPC64_PLT32: | |
3740 | case R_PPC64_PLT64: | |
5bd4f169 | 3741 | /* This symbol requires a procedure linkage table entry. We |
3fad3c7c AM |
3742 | actually build the entry in adjust_dynamic_symbol, |
3743 | because this might be a case of linking PIC code without | |
3744 | linking in any dynamic objects, in which case we don't | |
3745 | need to generate a procedure linkage table after all. */ | |
5bd4f169 AM |
3746 | if (h == NULL) |
3747 | { | |
3748 | /* It does not make sense to have a procedure linkage | |
3fad3c7c | 3749 | table entry for a local symbol. */ |
5bd4f169 | 3750 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 3751 | return FALSE; |
5bd4f169 | 3752 | } |
411e1bfb AM |
3753 | else |
3754 | if (!update_plt_info (abfd, (struct ppc_link_hash_entry *) h, | |
3755 | rel->r_addend)) | |
3756 | return FALSE; | |
5bd4f169 AM |
3757 | break; |
3758 | ||
3759 | /* The following relocations don't need to propagate the | |
3760 | relocation if linking a shared object since they are | |
3761 | section relative. */ | |
3762 | case R_PPC64_SECTOFF: | |
3763 | case R_PPC64_SECTOFF_LO: | |
3764 | case R_PPC64_SECTOFF_HI: | |
3765 | case R_PPC64_SECTOFF_HA: | |
3766 | case R_PPC64_SECTOFF_DS: | |
3767 | case R_PPC64_SECTOFF_LO_DS: | |
411e1bfb AM |
3768 | case R_PPC64_DTPREL16: |
3769 | case R_PPC64_DTPREL16_LO: | |
3770 | case R_PPC64_DTPREL16_HI: | |
3771 | case R_PPC64_DTPREL16_HA: | |
3772 | case R_PPC64_DTPREL16_DS: | |
3773 | case R_PPC64_DTPREL16_LO_DS: | |
3774 | case R_PPC64_DTPREL16_HIGHER: | |
3775 | case R_PPC64_DTPREL16_HIGHERA: | |
3776 | case R_PPC64_DTPREL16_HIGHEST: | |
3777 | case R_PPC64_DTPREL16_HIGHESTA: | |
5bd4f169 AM |
3778 | break; |
3779 | ||
ad8e1ba5 AM |
3780 | /* Nor do these. */ |
3781 | case R_PPC64_TOC16: | |
3782 | case R_PPC64_TOC16_LO: | |
3783 | case R_PPC64_TOC16_HI: | |
3784 | case R_PPC64_TOC16_HA: | |
3785 | case R_PPC64_TOC16_DS: | |
3786 | case R_PPC64_TOC16_LO_DS: | |
3787 | sec->has_gp_reloc = 1; | |
3788 | break; | |
3789 | ||
5bd4f169 AM |
3790 | /* This relocation describes the C++ object vtable hierarchy. |
3791 | Reconstruct it for later use during GC. */ | |
3792 | case R_PPC64_GNU_VTINHERIT: | |
3793 | if (!_bfd_elf64_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) | |
b34976b6 | 3794 | return FALSE; |
5bd4f169 AM |
3795 | break; |
3796 | ||
3797 | /* This relocation describes which C++ vtable entries are actually | |
3798 | used. Record for later use during GC. */ | |
3799 | case R_PPC64_GNU_VTENTRY: | |
3800 | if (!_bfd_elf64_gc_record_vtentry (abfd, sec, h, rel->r_addend)) | |
b34976b6 | 3801 | return FALSE; |
5bd4f169 AM |
3802 | break; |
3803 | ||
721956f4 AM |
3804 | case R_PPC64_REL14: |
3805 | case R_PPC64_REL14_BRTAKEN: | |
3806 | case R_PPC64_REL14_BRNTAKEN: | |
3807 | htab->has_14bit_branch = 1; | |
3808 | /* Fall through. */ | |
3809 | ||
5d1634d7 | 3810 | case R_PPC64_REL24: |
e86ce104 AM |
3811 | if (h != NULL |
3812 | && h->root.root.string[0] == '.' | |
3813 | && h->root.root.string[1] != 0) | |
5d1634d7 AM |
3814 | { |
3815 | /* We may need a .plt entry if the function this reloc | |
3816 | refers to is in a shared lib. */ | |
411e1bfb AM |
3817 | if (!update_plt_info (abfd, (struct ppc_link_hash_entry *) h, |
3818 | rel->r_addend)) | |
3819 | return FALSE; | |
3820 | if (h == htab->tls_get_addr) | |
3821 | sec->has_tls_reloc = 1; | |
a48ebf4d AM |
3822 | else if ((strncmp (h->root.root.string, ".__tls_get_addr", 15) |
3823 | == 0) | |
3824 | && (h->root.root.string[15] == 0 | |
3825 | || h->root.root.string[15] == '@')) | |
411e1bfb AM |
3826 | { |
3827 | htab->tls_get_addr = h; | |
3828 | sec->has_tls_reloc = 1; | |
3829 | } | |
3830 | } | |
3831 | break; | |
3832 | ||
3833 | case R_PPC64_TPREL64: | |
3834 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_TPREL; | |
3835 | if (info->shared) | |
3836 | info->flags |= DF_STATIC_TLS; | |
3837 | goto dotlstoc; | |
3838 | ||
3839 | case R_PPC64_DTPMOD64: | |
3840 | if (rel + 1 < rel_end | |
3841 | && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64) | |
3842 | && rel[1].r_offset == rel->r_offset + 8) | |
951fd09b | 3843 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_GD; |
411e1bfb | 3844 | else |
951fd09b | 3845 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_LD; |
411e1bfb AM |
3846 | goto dotlstoc; |
3847 | ||
3848 | case R_PPC64_DTPREL64: | |
3849 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_DTPREL; | |
3850 | if (rel != relocs | |
3851 | && rel[-1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPMOD64) | |
3852 | && rel[-1].r_offset == rel->r_offset - 8) | |
3853 | /* This is the second reloc of a dtpmod, dtprel pair. | |
3854 | Don't mark with TLS_DTPREL. */ | |
3855 | goto dodyn; | |
3856 | ||
3857 | dotlstoc: | |
3858 | sec->has_tls_reloc = 1; | |
3859 | if (h != NULL) | |
3860 | { | |
3861 | struct ppc_link_hash_entry *eh; | |
3862 | eh = (struct ppc_link_hash_entry *) h; | |
e7b938ca | 3863 | eh->tls_mask |= tls_type; |
411e1bfb AM |
3864 | } |
3865 | else | |
3866 | if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
3867 | rel->r_addend, tls_type)) | |
3868 | return FALSE; | |
3869 | ||
3870 | if (ppc64_elf_section_data (sec)->t_symndx == NULL) | |
3871 | { | |
e7b938ca | 3872 | /* One extra to simplify get_tls_mask. */ |
951fd09b | 3873 | bfd_size_type amt = sec->_raw_size * sizeof (unsigned) / 8 + 1; |
4ce794b7 | 3874 | ppc64_elf_section_data (sec)->t_symndx = bfd_zalloc (abfd, amt); |
411e1bfb AM |
3875 | if (ppc64_elf_section_data (sec)->t_symndx == NULL) |
3876 | return FALSE; | |
3877 | } | |
3878 | BFD_ASSERT (rel->r_offset % 8 == 0); | |
3879 | ppc64_elf_section_data (sec)->t_symndx[rel->r_offset / 8] = r_symndx; | |
951fd09b AM |
3880 | |
3881 | /* Mark the second slot of a GD or LD entry. | |
3882 | -1 to indicate GD and -2 to indicate LD. */ | |
3883 | if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_GD)) | |
3884 | ppc64_elf_section_data (sec)->t_symndx[rel->r_offset / 8 + 1] = -1; | |
3885 | else if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_LD)) | |
3886 | ppc64_elf_section_data (sec)->t_symndx[rel->r_offset / 8 + 1] = -2; | |
411e1bfb AM |
3887 | goto dodyn; |
3888 | ||
3889 | case R_PPC64_TPREL16: | |
3890 | case R_PPC64_TPREL16_LO: | |
3891 | case R_PPC64_TPREL16_HI: | |
3892 | case R_PPC64_TPREL16_HA: | |
3893 | case R_PPC64_TPREL16_DS: | |
3894 | case R_PPC64_TPREL16_LO_DS: | |
3895 | case R_PPC64_TPREL16_HIGHER: | |
3896 | case R_PPC64_TPREL16_HIGHERA: | |
3897 | case R_PPC64_TPREL16_HIGHEST: | |
3898 | case R_PPC64_TPREL16_HIGHESTA: | |
3899 | if (info->shared) | |
3900 | { | |
3901 | info->flags |= DF_STATIC_TLS; | |
3902 | goto dodyn; | |
5d1634d7 AM |
3903 | } |
3904 | break; | |
3905 | ||
e86ce104 | 3906 | case R_PPC64_ADDR64: |
1e2f5b6e | 3907 | if (opd_sym_map != NULL |
e86ce104 AM |
3908 | && h != NULL |
3909 | && h->root.root.string[0] == '.' | |
3910 | && h->root.root.string[1] != 0) | |
50bc7936 | 3911 | get_fdh ((struct ppc_link_hash_entry *) h, htab); |
e86ce104 | 3912 | |
1e2f5b6e AM |
3913 | if (opd_sym_map != NULL |
3914 | && h == NULL | |
3915 | && rel + 1 < rel_end | |
4ce794b7 | 3916 | && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC) |
1e2f5b6e AM |
3917 | { |
3918 | asection *s; | |
3919 | ||
3920 | s = bfd_section_from_r_symndx (abfd, &htab->sym_sec, sec, | |
3921 | r_symndx); | |
3922 | if (s == NULL) | |
b34976b6 | 3923 | return FALSE; |
1e2f5b6e AM |
3924 | else if (s != sec) |
3925 | opd_sym_map[rel->r_offset / 24] = s; | |
3926 | } | |
e86ce104 AM |
3927 | /* Fall through. */ |
3928 | ||
04c9666a | 3929 | case R_PPC64_REL30: |
5bd4f169 | 3930 | case R_PPC64_REL32: |
04c9666a | 3931 | case R_PPC64_REL64: |
65f38f15 AM |
3932 | case R_PPC64_ADDR14: |
3933 | case R_PPC64_ADDR14_BRNTAKEN: | |
3934 | case R_PPC64_ADDR14_BRTAKEN: | |
3935 | case R_PPC64_ADDR16: | |
3936 | case R_PPC64_ADDR16_DS: | |
3937 | case R_PPC64_ADDR16_HA: | |
3938 | case R_PPC64_ADDR16_HI: | |
3939 | case R_PPC64_ADDR16_HIGHER: | |
3940 | case R_PPC64_ADDR16_HIGHERA: | |
3941 | case R_PPC64_ADDR16_HIGHEST: | |
3942 | case R_PPC64_ADDR16_HIGHESTA: | |
3943 | case R_PPC64_ADDR16_LO: | |
3944 | case R_PPC64_ADDR16_LO_DS: | |
3945 | case R_PPC64_ADDR24: | |
65f38f15 | 3946 | case R_PPC64_ADDR32: |
65f38f15 AM |
3947 | case R_PPC64_UADDR16: |
3948 | case R_PPC64_UADDR32: | |
3949 | case R_PPC64_UADDR64: | |
5bd4f169 | 3950 | case R_PPC64_TOC: |
81848ca0 AM |
3951 | if (h != NULL && !info->shared) |
3952 | /* We may need a copy reloc. */ | |
3953 | h->elf_link_hash_flags |= ELF_LINK_NON_GOT_REF; | |
3954 | ||
41bd81ab | 3955 | /* Don't propagate .opd relocs. */ |
1e2f5b6e | 3956 | if (NO_OPD_RELOCS && opd_sym_map != NULL) |
e86ce104 | 3957 | break; |
e86ce104 | 3958 | |
65f38f15 AM |
3959 | /* If we are creating a shared library, and this is a reloc |
3960 | against a global symbol, or a non PC relative reloc | |
3961 | against a local symbol, then we need to copy the reloc | |
3962 | into the shared library. However, if we are linking with | |
3963 | -Bsymbolic, we do not need to copy a reloc against a | |
3964 | global symbol which is defined in an object we are | |
3965 | including in the link (i.e., DEF_REGULAR is set). At | |
3966 | this point we have not seen all the input files, so it is | |
3967 | possible that DEF_REGULAR is not set now but will be set | |
3968 | later (it is never cleared). In case of a weak definition, | |
3969 | DEF_REGULAR may be cleared later by a strong definition in | |
3970 | a shared library. We account for that possibility below by | |
f4656909 | 3971 | storing information in the dyn_relocs field of the hash |
65f38f15 AM |
3972 | table entry. A similar situation occurs when creating |
3973 | shared libraries and symbol visibility changes render the | |
3974 | symbol local. | |
3975 | ||
3976 | If on the other hand, we are creating an executable, we | |
3977 | may need to keep relocations for symbols satisfied by a | |
3978 | dynamic library if we manage to avoid copy relocs for the | |
3979 | symbol. */ | |
411e1bfb | 3980 | dodyn: |
65f38f15 | 3981 | if ((info->shared |
411e1bfb | 3982 | && (MUST_BE_DYN_RELOC (r_type) |
65f38f15 AM |
3983 | || (h != NULL |
3984 | && (! info->symbolic | |
3985 | || h->root.type == bfd_link_hash_defweak | |
3986 | || (h->elf_link_hash_flags | |
3987 | & ELF_LINK_HASH_DEF_REGULAR) == 0)))) | |
f4656909 AM |
3988 | || (ELIMINATE_COPY_RELOCS |
3989 | && !info->shared | |
65f38f15 AM |
3990 | && h != NULL |
3991 | && (h->root.type == bfd_link_hash_defweak | |
3992 | || (h->elf_link_hash_flags | |
3993 | & ELF_LINK_HASH_DEF_REGULAR) == 0))) | |
5bd4f169 | 3994 | { |
ec338859 AM |
3995 | struct ppc_dyn_relocs *p; |
3996 | struct ppc_dyn_relocs **head; | |
3997 | ||
65f38f15 AM |
3998 | /* We must copy these reloc types into the output file. |
3999 | Create a reloc section in dynobj and make room for | |
4000 | this reloc. */ | |
5bd4f169 AM |
4001 | if (sreloc == NULL) |
4002 | { | |
4003 | const char *name; | |
65f38f15 | 4004 | bfd *dynobj; |
5bd4f169 AM |
4005 | |
4006 | name = (bfd_elf_string_from_elf_section | |
4007 | (abfd, | |
4008 | elf_elfheader (abfd)->e_shstrndx, | |
4009 | elf_section_data (sec)->rel_hdr.sh_name)); | |
4010 | if (name == NULL) | |
b34976b6 | 4011 | return FALSE; |
5bd4f169 | 4012 | |
65f38f15 AM |
4013 | if (strncmp (name, ".rela", 5) != 0 |
4014 | || strcmp (bfd_get_section_name (abfd, sec), | |
4015 | name + 5) != 0) | |
4016 | { | |
4017 | (*_bfd_error_handler) | |
4018 | (_("%s: bad relocation section name `%s\'"), | |
4019 | bfd_archive_filename (abfd), name); | |
5d1634d7 | 4020 | bfd_set_error (bfd_error_bad_value); |
65f38f15 AM |
4021 | } |
4022 | ||
65f38f15 | 4023 | dynobj = htab->elf.dynobj; |
5bd4f169 AM |
4024 | sreloc = bfd_get_section_by_name (dynobj, name); |
4025 | if (sreloc == NULL) | |
4026 | { | |
4027 | flagword flags; | |
4028 | ||
4029 | sreloc = bfd_make_section (dynobj, name); | |
4030 | flags = (SEC_HAS_CONTENTS | SEC_READONLY | |
4031 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
4032 | if ((sec->flags & SEC_ALLOC) != 0) | |
4033 | flags |= SEC_ALLOC | SEC_LOAD; | |
4034 | if (sreloc == NULL | |
4035 | || ! bfd_set_section_flags (dynobj, sreloc, flags) | |
65f38f15 | 4036 | || ! bfd_set_section_alignment (dynobj, sreloc, 3)) |
b34976b6 | 4037 | return FALSE; |
5bd4f169 | 4038 | } |
65f38f15 | 4039 | elf_section_data (sec)->sreloc = sreloc; |
5bd4f169 AM |
4040 | } |
4041 | ||
65f38f15 AM |
4042 | /* If this is a global symbol, we count the number of |
4043 | relocations we need for this symbol. */ | |
4044 | if (h != NULL) | |
4045 | { | |
ec338859 | 4046 | head = &((struct ppc_link_hash_entry *) h)->dyn_relocs; |
65f38f15 AM |
4047 | } |
4048 | else | |
4049 | { | |
ec338859 AM |
4050 | /* Track dynamic relocs needed for local syms too. |
4051 | We really need local syms available to do this | |
4052 | easily. Oh well. */ | |
4053 | ||
4054 | asection *s; | |
4055 | s = bfd_section_from_r_symndx (abfd, &htab->sym_sec, | |
4056 | sec, r_symndx); | |
4057 | if (s == NULL) | |
b34976b6 | 4058 | return FALSE; |
ec338859 AM |
4059 | |
4060 | head = ((struct ppc_dyn_relocs **) | |
4061 | &elf_section_data (s)->local_dynrel); | |
65f38f15 | 4062 | } |
ec338859 AM |
4063 | |
4064 | p = *head; | |
4065 | if (p == NULL || p->sec != sec) | |
4066 | { | |
4ce794b7 | 4067 | p = bfd_alloc (htab->elf.dynobj, sizeof *p); |
ec338859 | 4068 | if (p == NULL) |
b34976b6 | 4069 | return FALSE; |
ec338859 AM |
4070 | p->next = *head; |
4071 | *head = p; | |
4072 | p->sec = sec; | |
4073 | p->count = 0; | |
4074 | p->pc_count = 0; | |
4075 | } | |
4076 | ||
4077 | p->count += 1; | |
411e1bfb | 4078 | if (!MUST_BE_DYN_RELOC (r_type)) |
ec338859 | 4079 | p->pc_count += 1; |
65f38f15 | 4080 | } |
5bd4f169 | 4081 | break; |
65f38f15 AM |
4082 | |
4083 | default: | |
96e0dda4 | 4084 | break; |
5bd4f169 AM |
4085 | } |
4086 | } | |
4087 | ||
b34976b6 | 4088 | return TRUE; |
5bd4f169 AM |
4089 | } |
4090 | ||
4091 | /* Return the section that should be marked against GC for a given | |
4092 | relocation. */ | |
4093 | ||
4094 | static asection * | |
4ce794b7 AM |
4095 | ppc64_elf_gc_mark_hook (asection *sec, |
4096 | struct bfd_link_info *info ATTRIBUTE_UNUSED, | |
4097 | Elf_Internal_Rela *rel, | |
4098 | struct elf_link_hash_entry *h, | |
4099 | Elf_Internal_Sym *sym) | |
5bd4f169 | 4100 | { |
1e2f5b6e AM |
4101 | asection *rsec = NULL; |
4102 | ||
5bd4f169 AM |
4103 | if (h != NULL) |
4104 | { | |
04c9666a | 4105 | enum elf_ppc64_reloc_type r_type; |
1e2f5b6e | 4106 | struct ppc_link_hash_entry *fdh; |
a33d1f77 | 4107 | |
4ce794b7 | 4108 | r_type = ELF64_R_TYPE (rel->r_info); |
a33d1f77 | 4109 | switch (r_type) |
5bd4f169 AM |
4110 | { |
4111 | case R_PPC64_GNU_VTINHERIT: | |
4112 | case R_PPC64_GNU_VTENTRY: | |
4113 | break; | |
4114 | ||
4115 | default: | |
4116 | switch (h->root.type) | |
4117 | { | |
4118 | case bfd_link_hash_defined: | |
4119 | case bfd_link_hash_defweak: | |
1e2f5b6e AM |
4120 | fdh = (struct ppc_link_hash_entry *) h; |
4121 | ||
4122 | /* Function descriptor syms cause the associated | |
4123 | function code sym section to be marked. */ | |
4124 | if (fdh->is_func_descriptor) | |
4125 | rsec = fdh->oh->root.u.def.section; | |
4126 | ||
4127 | /* Function entry syms return NULL if they are in .opd | |
4128 | and are not ._start (or others undefined on the ld | |
4129 | command line). Thus we avoid marking all function | |
b34976b6 | 4130 | sections, as all functions are referenced in .opd. */ |
1e2f5b6e AM |
4131 | else if ((fdh->oh != NULL |
4132 | && ((struct ppc_link_hash_entry *) fdh->oh)->is_entry) | |
f0abc2a1 | 4133 | || ppc64_elf_section_data (sec)->opd.func_sec == NULL) |
1e2f5b6e AM |
4134 | rsec = h->root.u.def.section; |
4135 | break; | |
5bd4f169 AM |
4136 | |
4137 | case bfd_link_hash_common: | |
1e2f5b6e AM |
4138 | rsec = h->root.u.c.p->section; |
4139 | break; | |
5bd4f169 AM |
4140 | |
4141 | default: | |
4142 | break; | |
4143 | } | |
4144 | } | |
4145 | } | |
4146 | else | |
4147 | { | |
1e2f5b6e AM |
4148 | asection **opd_sym_section; |
4149 | ||
4150 | rsec = bfd_section_from_elf_index (sec->owner, sym->st_shndx); | |
f0abc2a1 | 4151 | opd_sym_section = ppc64_elf_section_data (rsec)->opd.func_sec; |
1e2f5b6e AM |
4152 | if (opd_sym_section != NULL) |
4153 | rsec = opd_sym_section[sym->st_value / 24]; | |
f0abc2a1 | 4154 | else if (ppc64_elf_section_data (sec)->opd.func_sec != NULL) |
1e2f5b6e | 4155 | rsec = NULL; |
5bd4f169 AM |
4156 | } |
4157 | ||
1e2f5b6e | 4158 | return rsec; |
5bd4f169 AM |
4159 | } |
4160 | ||
65f38f15 AM |
4161 | /* Update the .got, .plt. and dynamic reloc reference counts for the |
4162 | section being removed. */ | |
5bd4f169 | 4163 | |
b34976b6 | 4164 | static bfd_boolean |
4ce794b7 AM |
4165 | ppc64_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info, |
4166 | asection *sec, const Elf_Internal_Rela *relocs) | |
5bd4f169 | 4167 | { |
411e1bfb | 4168 | struct ppc_link_hash_table *htab; |
5bd4f169 AM |
4169 | Elf_Internal_Shdr *symtab_hdr; |
4170 | struct elf_link_hash_entry **sym_hashes; | |
411e1bfb | 4171 | struct got_entry **local_got_ents; |
5bd4f169 | 4172 | const Elf_Internal_Rela *rel, *relend; |
5bd4f169 | 4173 | |
680a3378 AM |
4174 | if ((sec->flags & SEC_ALLOC) == 0) |
4175 | return TRUE; | |
4176 | ||
ec338859 AM |
4177 | elf_section_data (sec)->local_dynrel = NULL; |
4178 | ||
411e1bfb | 4179 | htab = ppc_hash_table (info); |
5bd4f169 AM |
4180 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
4181 | sym_hashes = elf_sym_hashes (abfd); | |
411e1bfb | 4182 | local_got_ents = elf_local_got_ents (abfd); |
5bd4f169 AM |
4183 | |
4184 | relend = relocs + sec->reloc_count; | |
4185 | for (rel = relocs; rel < relend; rel++) | |
a33d1f77 AM |
4186 | { |
4187 | unsigned long r_symndx; | |
04c9666a | 4188 | enum elf_ppc64_reloc_type r_type; |
58ac9f71 | 4189 | struct elf_link_hash_entry *h = NULL; |
411e1bfb | 4190 | char tls_type = 0; |
5bd4f169 | 4191 | |
a33d1f77 | 4192 | r_symndx = ELF64_R_SYM (rel->r_info); |
4ce794b7 | 4193 | r_type = ELF64_R_TYPE (rel->r_info); |
58ac9f71 AM |
4194 | if (r_symndx >= symtab_hdr->sh_info) |
4195 | { | |
4196 | struct ppc_link_hash_entry *eh; | |
4197 | struct ppc_dyn_relocs **pp; | |
4198 | struct ppc_dyn_relocs *p; | |
4199 | ||
4200 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
4201 | eh = (struct ppc_link_hash_entry *) h; | |
4202 | ||
4203 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next) | |
4204 | if (p->sec == sec) | |
4205 | { | |
4206 | /* Everything must go for SEC. */ | |
4207 | *pp = p->next; | |
4208 | break; | |
4209 | } | |
4210 | } | |
4211 | ||
a33d1f77 AM |
4212 | switch (r_type) |
4213 | { | |
411e1bfb AM |
4214 | case R_PPC64_GOT_TLSLD16: |
4215 | case R_PPC64_GOT_TLSLD16_LO: | |
4216 | case R_PPC64_GOT_TLSLD16_HI: | |
4217 | case R_PPC64_GOT_TLSLD16_HA: | |
e717da7e | 4218 | ppc64_tlsld_got (abfd)->refcount -= 1; |
951fd09b | 4219 | tls_type = TLS_TLS | TLS_LD; |
411e1bfb AM |
4220 | goto dogot; |
4221 | ||
4222 | case R_PPC64_GOT_TLSGD16: | |
4223 | case R_PPC64_GOT_TLSGD16_LO: | |
4224 | case R_PPC64_GOT_TLSGD16_HI: | |
4225 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b | 4226 | tls_type = TLS_TLS | TLS_GD; |
411e1bfb AM |
4227 | goto dogot; |
4228 | ||
4229 | case R_PPC64_GOT_TPREL16_DS: | |
4230 | case R_PPC64_GOT_TPREL16_LO_DS: | |
4231 | case R_PPC64_GOT_TPREL16_HI: | |
4232 | case R_PPC64_GOT_TPREL16_HA: | |
4233 | tls_type = TLS_TLS | TLS_TPREL; | |
4234 | goto dogot; | |
4235 | ||
4236 | case R_PPC64_GOT_DTPREL16_DS: | |
4237 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
4238 | case R_PPC64_GOT_DTPREL16_HI: | |
4239 | case R_PPC64_GOT_DTPREL16_HA: | |
4240 | tls_type = TLS_TLS | TLS_DTPREL; | |
4241 | goto dogot; | |
4242 | ||
a33d1f77 AM |
4243 | case R_PPC64_GOT16: |
4244 | case R_PPC64_GOT16_DS: | |
4245 | case R_PPC64_GOT16_HA: | |
4246 | case R_PPC64_GOT16_HI: | |
4247 | case R_PPC64_GOT16_LO: | |
4248 | case R_PPC64_GOT16_LO_DS: | |
411e1bfb AM |
4249 | dogot: |
4250 | { | |
4251 | struct got_entry *ent; | |
4252 | ||
58ac9f71 AM |
4253 | if (h != NULL) |
4254 | ent = h->got.glist; | |
411e1bfb AM |
4255 | else |
4256 | ent = local_got_ents[r_symndx]; | |
4257 | ||
4258 | for (; ent != NULL; ent = ent->next) | |
4259 | if (ent->addend == rel->r_addend | |
e717da7e | 4260 | && ent->owner == abfd |
411e1bfb AM |
4261 | && ent->tls_type == tls_type) |
4262 | break; | |
4263 | if (ent == NULL) | |
4264 | abort (); | |
4265 | if (ent->got.refcount > 0) | |
4266 | ent->got.refcount -= 1; | |
4267 | } | |
a33d1f77 | 4268 | break; |
65f38f15 | 4269 | |
a33d1f77 AM |
4270 | case R_PPC64_PLT16_HA: |
4271 | case R_PPC64_PLT16_HI: | |
4272 | case R_PPC64_PLT16_LO: | |
4273 | case R_PPC64_PLT32: | |
4274 | case R_PPC64_PLT64: | |
721956f4 AM |
4275 | case R_PPC64_REL14: |
4276 | case R_PPC64_REL14_BRNTAKEN: | |
4277 | case R_PPC64_REL14_BRTAKEN: | |
5d1634d7 | 4278 | case R_PPC64_REL24: |
58ac9f71 | 4279 | if (h != NULL) |
5d1634d7 | 4280 | { |
411e1bfb AM |
4281 | struct plt_entry *ent; |
4282 | ||
411e1bfb AM |
4283 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) |
4284 | if (ent->addend == rel->r_addend) | |
4285 | break; | |
4286 | if (ent == NULL) | |
4287 | abort (); | |
4288 | if (ent->plt.refcount > 0) | |
4289 | ent->plt.refcount -= 1; | |
5d1634d7 | 4290 | } |
e86ce104 | 4291 | break; |
5d1634d7 | 4292 | |
a33d1f77 AM |
4293 | default: |
4294 | break; | |
4295 | } | |
4296 | } | |
b34976b6 | 4297 | return TRUE; |
5bd4f169 AM |
4298 | } |
4299 | ||
e86ce104 AM |
4300 | /* Called via elf_link_hash_traverse to transfer dynamic linking |
4301 | information on function code symbol entries to their corresponding | |
4302 | function descriptor symbol entries. */ | |
b34976b6 | 4303 | static bfd_boolean |
4ce794b7 | 4304 | func_desc_adjust (struct elf_link_hash_entry *h, void *inf) |
5bd4f169 | 4305 | { |
e86ce104 | 4306 | struct bfd_link_info *info; |
65f38f15 | 4307 | struct ppc_link_hash_table *htab; |
411e1bfb | 4308 | struct plt_entry *ent; |
50bc7936 AM |
4309 | struct ppc_link_hash_entry *fh; |
4310 | struct ppc_link_hash_entry *fdh; | |
4311 | bfd_boolean force_local; | |
5bd4f169 | 4312 | |
50bc7936 AM |
4313 | fh = (struct ppc_link_hash_entry *) h; |
4314 | if (fh->elf.root.type == bfd_link_hash_indirect) | |
b34976b6 | 4315 | return TRUE; |
e86ce104 | 4316 | |
50bc7936 AM |
4317 | if (fh->elf.root.type == bfd_link_hash_warning) |
4318 | fh = (struct ppc_link_hash_entry *) fh->elf.root.u.i.link; | |
e92d460e | 4319 | |
4ce794b7 | 4320 | info = inf; |
65f38f15 | 4321 | htab = ppc_hash_table (info); |
5bd4f169 | 4322 | |
e86ce104 AM |
4323 | /* If this is a function code symbol, transfer dynamic linking |
4324 | information to the function descriptor symbol. */ | |
50bc7936 | 4325 | if (!fh->is_func) |
b34976b6 | 4326 | return TRUE; |
e86ce104 | 4327 | |
50bc7936 AM |
4328 | if (fh->elf.root.type == bfd_link_hash_undefweak |
4329 | && (fh->elf.elf_link_hash_flags & ELF_LINK_HASH_REF_REGULAR)) | |
b34976b6 | 4330 | htab->have_undefweak = TRUE; |
805fc799 | 4331 | |
50bc7936 | 4332 | for (ent = fh->elf.plt.plist; ent != NULL; ent = ent->next) |
411e1bfb AM |
4333 | if (ent->plt.refcount > 0) |
4334 | break; | |
50bc7936 AM |
4335 | if (ent == NULL |
4336 | || fh->elf.root.root.string[0] != '.' | |
4337 | || fh->elf.root.root.string[1] == '\0') | |
4338 | return TRUE; | |
5bd4f169 | 4339 | |
50bc7936 AM |
4340 | /* Find the corresponding function descriptor symbol. Create it |
4341 | as undefined if necessary. */ | |
5bd4f169 | 4342 | |
50bc7936 AM |
4343 | fdh = get_fdh (fh, htab); |
4344 | if (fdh != NULL) | |
4345 | while (fdh->elf.root.type == bfd_link_hash_indirect | |
4346 | || fdh->elf.root.type == bfd_link_hash_warning) | |
4347 | fdh = (struct ppc_link_hash_entry *) fdh->elf.root.u.i.link; | |
5bd4f169 | 4348 | |
50bc7936 AM |
4349 | if (fdh == NULL |
4350 | && info->shared | |
4351 | && (fh->elf.root.type == bfd_link_hash_undefined | |
4352 | || fh->elf.root.type == bfd_link_hash_undefweak)) | |
4353 | { | |
4354 | bfd *abfd; | |
4355 | asymbol *newsym; | |
4356 | struct bfd_link_hash_entry *bh; | |
4357 | ||
4358 | abfd = fh->elf.root.u.undef.abfd; | |
4359 | newsym = bfd_make_empty_symbol (abfd); | |
4360 | newsym->name = fh->elf.root.root.string + 1; | |
4361 | newsym->section = bfd_und_section_ptr; | |
4362 | newsym->value = 0; | |
4363 | newsym->flags = BSF_OBJECT; | |
4364 | if (fh->elf.root.type == bfd_link_hash_undefweak) | |
4365 | newsym->flags |= BSF_WEAK; | |
4366 | ||
4367 | bh = &fdh->elf.root; | |
4368 | if ( !(_bfd_generic_link_add_one_symbol | |
4369 | (info, abfd, newsym->name, newsym->flags, | |
4370 | newsym->section, newsym->value, NULL, FALSE, FALSE, &bh))) | |
648cca2c | 4371 | { |
50bc7936 | 4372 | return FALSE; |
648cca2c | 4373 | } |
50bc7936 AM |
4374 | fdh = (struct ppc_link_hash_entry *) bh; |
4375 | fdh->elf.elf_link_hash_flags &= ~ELF_LINK_NON_ELF; | |
4376 | fdh->elf.size = 24; | |
4377 | fdh->elf.type = STT_OBJECT; | |
4378 | } | |
648cca2c | 4379 | |
50bc7936 AM |
4380 | if (fdh != NULL |
4381 | && (fdh->elf.elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0 | |
4382 | && (info->shared | |
4383 | || (fdh->elf.elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0 | |
4384 | || (fdh->elf.elf_link_hash_flags & ELF_LINK_HASH_REF_DYNAMIC) != 0 | |
4385 | || (fdh->elf.root.type == bfd_link_hash_undefweak | |
4386 | && ELF_ST_VISIBILITY (fdh->elf.other) == STV_DEFAULT))) | |
4387 | { | |
4388 | if (fdh->elf.dynindx == -1) | |
4389 | if (! bfd_elf64_link_record_dynamic_symbol (info, &fdh->elf)) | |
4390 | return FALSE; | |
4391 | fdh->elf.elf_link_hash_flags | |
4392 | |= (fh->elf.elf_link_hash_flags & (ELF_LINK_HASH_REF_REGULAR | |
4393 | | ELF_LINK_HASH_REF_DYNAMIC | |
4394 | | ELF_LINK_HASH_REF_REGULAR_NONWEAK | |
4395 | | ELF_LINK_NON_GOT_REF)); | |
4396 | if (ELF_ST_VISIBILITY (fh->elf.other) == STV_DEFAULT) | |
e86ce104 | 4397 | { |
50bc7936 AM |
4398 | fdh->elf.plt.plist = fh->elf.plt.plist; |
4399 | fdh->elf.elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT; | |
e86ce104 | 4400 | } |
50bc7936 AM |
4401 | fdh->is_func_descriptor = 1; |
4402 | fdh->oh = &fh->elf; | |
4403 | fh->oh = &fdh->elf; | |
e86ce104 AM |
4404 | } |
4405 | ||
50bc7936 AM |
4406 | /* Now that the info is on the function descriptor, clear the |
4407 | function code sym info. Any function code syms for which we | |
4408 | don't have a definition in a regular file, we force local. | |
4409 | This prevents a shared library from exporting syms that have | |
4410 | been imported from another library. Function code syms that | |
4411 | are really in the library we must leave global to prevent the | |
4412 | linker dragging in a definition from a static library. */ | |
4413 | force_local | |
4414 | = (info->shared | |
4415 | && ((fh->elf.elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0 | |
4416 | || fdh == NULL | |
4417 | || (fdh->elf.elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0 | |
4418 | || (fdh->elf.elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0)); | |
4419 | _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local); | |
4420 | ||
b34976b6 | 4421 | return TRUE; |
e86ce104 | 4422 | } |
40b8271b | 4423 | |
82bd7b59 AM |
4424 | #define MIN_SAVE_FPR 14 |
4425 | #define MAX_SAVE_FPR 31 | |
4426 | ||
e86ce104 | 4427 | /* Called near the start of bfd_elf_size_dynamic_sections. We use |
82bd7b59 AM |
4428 | this hook to a) provide some gcc support functions, and b) transfer |
4429 | dynamic linking information gathered so far on function code symbol | |
4430 | entries, to their corresponding function descriptor symbol entries. */ | |
b34976b6 | 4431 | static bfd_boolean |
4ce794b7 AM |
4432 | ppc64_elf_func_desc_adjust (bfd *obfd ATTRIBUTE_UNUSED, |
4433 | struct bfd_link_info *info) | |
e86ce104 AM |
4434 | { |
4435 | struct ppc_link_hash_table *htab; | |
82bd7b59 AM |
4436 | unsigned int lowest_savef = MAX_SAVE_FPR + 2; |
4437 | unsigned int lowest_restf = MAX_SAVE_FPR + 2; | |
4438 | unsigned int i; | |
4439 | struct elf_link_hash_entry *h; | |
721956f4 | 4440 | bfd_byte *p; |
82bd7b59 | 4441 | char sym[10]; |
e86ce104 AM |
4442 | |
4443 | htab = ppc_hash_table (info); | |
82bd7b59 AM |
4444 | |
4445 | if (htab->sfpr == NULL) | |
4446 | /* We don't have any relocs. */ | |
b34976b6 | 4447 | return TRUE; |
82bd7b59 AM |
4448 | |
4449 | /* First provide any missing ._savef* and ._restf* functions. */ | |
4450 | memcpy (sym, "._savef14", 10); | |
4451 | for (i = MIN_SAVE_FPR; i <= MAX_SAVE_FPR; i++) | |
4452 | { | |
4453 | sym[7] = i / 10 + '0'; | |
4454 | sym[8] = i % 10 + '0'; | |
b34976b6 | 4455 | h = elf_link_hash_lookup (&htab->elf, sym, FALSE, FALSE, TRUE); |
82bd7b59 | 4456 | if (h != NULL |
772119ce | 4457 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0) |
82bd7b59 AM |
4458 | { |
4459 | if (lowest_savef > i) | |
4460 | lowest_savef = i; | |
4461 | h->root.type = bfd_link_hash_defined; | |
4462 | h->root.u.def.section = htab->sfpr; | |
4463 | h->root.u.def.value = (i - lowest_savef) * 4; | |
4464 | h->type = STT_FUNC; | |
4465 | h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR; | |
772119ce | 4466 | _bfd_elf_link_hash_hide_symbol (info, h, TRUE); |
82bd7b59 AM |
4467 | } |
4468 | } | |
4469 | ||
4470 | memcpy (sym, "._restf14", 10); | |
4471 | for (i = MIN_SAVE_FPR; i <= MAX_SAVE_FPR; i++) | |
4472 | { | |
4473 | sym[7] = i / 10 + '0'; | |
4474 | sym[8] = i % 10 + '0'; | |
b34976b6 | 4475 | h = elf_link_hash_lookup (&htab->elf, sym, FALSE, FALSE, TRUE); |
82bd7b59 | 4476 | if (h != NULL |
772119ce | 4477 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0) |
82bd7b59 AM |
4478 | { |
4479 | if (lowest_restf > i) | |
4480 | lowest_restf = i; | |
4481 | h->root.type = bfd_link_hash_defined; | |
4482 | h->root.u.def.section = htab->sfpr; | |
4483 | h->root.u.def.value = ((MAX_SAVE_FPR + 2 - lowest_savef) * 4 | |
4484 | + (i - lowest_restf) * 4); | |
4485 | h->type = STT_FUNC; | |
4486 | h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR; | |
772119ce | 4487 | _bfd_elf_link_hash_hide_symbol (info, h, TRUE); |
82bd7b59 AM |
4488 | } |
4489 | } | |
4490 | ||
4ce794b7 | 4491 | elf_link_hash_traverse (&htab->elf, func_desc_adjust, info); |
805fc799 | 4492 | |
82bd7b59 AM |
4493 | htab->sfpr->_raw_size = ((MAX_SAVE_FPR + 2 - lowest_savef) * 4 |
4494 | + (MAX_SAVE_FPR + 2 - lowest_restf) * 4); | |
4495 | ||
4496 | if (htab->sfpr->_raw_size == 0) | |
805fc799 AM |
4497 | { |
4498 | if (!htab->have_undefweak) | |
4499 | { | |
4500 | _bfd_strip_section_from_output (info, htab->sfpr); | |
b34976b6 | 4501 | return TRUE; |
805fc799 AM |
4502 | } |
4503 | ||
4504 | htab->sfpr->_raw_size = 4; | |
4505 | } | |
82bd7b59 | 4506 | |
4ce794b7 | 4507 | p = bfd_alloc (htab->elf.dynobj, htab->sfpr->_raw_size); |
721956f4 | 4508 | if (p == NULL) |
b34976b6 | 4509 | return FALSE; |
721956f4 AM |
4510 | htab->sfpr->contents = p; |
4511 | ||
4512 | for (i = lowest_savef; i <= MAX_SAVE_FPR; i++) | |
4513 | { | |
4514 | unsigned int fpr = i << 21; | |
4515 | unsigned int stackoff = (1 << 16) - (MAX_SAVE_FPR + 1 - i) * 8; | |
4516 | bfd_put_32 (htab->elf.dynobj, STFD_FR0_0R1 + fpr + stackoff, p); | |
4517 | p += 4; | |
4518 | } | |
4519 | if (lowest_savef <= MAX_SAVE_FPR) | |
4520 | { | |
82bd7b59 AM |
4521 | bfd_put_32 (htab->elf.dynobj, BLR, p); |
4522 | p += 4; | |
721956f4 | 4523 | } |
82bd7b59 | 4524 | |
721956f4 AM |
4525 | for (i = lowest_restf; i <= MAX_SAVE_FPR; i++) |
4526 | { | |
4527 | unsigned int fpr = i << 21; | |
4528 | unsigned int stackoff = (1 << 16) - (MAX_SAVE_FPR + 1 - i) * 8; | |
4529 | bfd_put_32 (htab->elf.dynobj, LFD_FR0_0R1 + fpr + stackoff, p); | |
82bd7b59 AM |
4530 | p += 4; |
4531 | } | |
721956f4 AM |
4532 | if (lowest_restf <= MAX_SAVE_FPR |
4533 | || htab->sfpr->_raw_size == 4) | |
4534 | { | |
4535 | bfd_put_32 (htab->elf.dynobj, BLR, p); | |
4536 | } | |
82bd7b59 | 4537 | |
b34976b6 | 4538 | return TRUE; |
e86ce104 AM |
4539 | } |
4540 | ||
4541 | /* Adjust a symbol defined by a dynamic object and referenced by a | |
4542 | regular object. The current definition is in some section of the | |
4543 | dynamic object, but we're not including those sections. We have to | |
4544 | change the definition to something the rest of the link can | |
4545 | understand. */ | |
4546 | ||
b34976b6 | 4547 | static bfd_boolean |
4ce794b7 AM |
4548 | ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info *info, |
4549 | struct elf_link_hash_entry *h) | |
e86ce104 AM |
4550 | { |
4551 | struct ppc_link_hash_table *htab; | |
e86ce104 AM |
4552 | asection *s; |
4553 | unsigned int power_of_two; | |
4554 | ||
4555 | htab = ppc_hash_table (info); | |
4556 | ||
4557 | /* Deal with function syms. */ | |
4558 | if (h->type == STT_FUNC | |
4559 | || (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0) | |
4560 | { | |
4561 | /* Clear procedure linkage table information for any symbol that | |
4562 | won't need a .plt entry. */ | |
411e1bfb AM |
4563 | struct plt_entry *ent; |
4564 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) | |
4565 | if (ent->plt.refcount > 0) | |
4566 | break; | |
e86ce104 | 4567 | if (!((struct ppc_link_hash_entry *) h)->is_func_descriptor |
411e1bfb | 4568 | || ent == NULL |
9c7a29a3 AM |
4569 | || SYMBOL_CALLS_LOCAL (info, h) |
4570 | || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
4571 | && h->root.type == bfd_link_hash_undefweak)) | |
40b8271b | 4572 | { |
411e1bfb | 4573 | h->plt.plist = NULL; |
40b8271b | 4574 | h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT; |
40b8271b | 4575 | } |
5bd4f169 | 4576 | } |
bbd7ec4a | 4577 | else |
411e1bfb | 4578 | h->plt.plist = NULL; |
5bd4f169 AM |
4579 | |
4580 | /* If this is a weak symbol, and there is a real definition, the | |
4581 | processor independent code will have arranged for us to see the | |
4582 | real definition first, and we can just use the same value. */ | |
4583 | if (h->weakdef != NULL) | |
4584 | { | |
4585 | BFD_ASSERT (h->weakdef->root.type == bfd_link_hash_defined | |
4586 | || h->weakdef->root.type == bfd_link_hash_defweak); | |
4587 | h->root.u.def.section = h->weakdef->root.u.def.section; | |
4588 | h->root.u.def.value = h->weakdef->root.u.def.value; | |
a23b6845 AM |
4589 | if (ELIMINATE_COPY_RELOCS) |
4590 | h->elf_link_hash_flags | |
4591 | = ((h->elf_link_hash_flags & ~ELF_LINK_NON_GOT_REF) | |
4592 | | (h->weakdef->elf_link_hash_flags & ELF_LINK_NON_GOT_REF)); | |
b34976b6 | 4593 | return TRUE; |
5bd4f169 AM |
4594 | } |
4595 | ||
5bd4f169 AM |
4596 | /* If we are creating a shared library, we must presume that the |
4597 | only references to the symbol are via the global offset table. | |
4598 | For such cases we need not do anything here; the relocations will | |
4599 | be handled correctly by relocate_section. */ | |
4600 | if (info->shared) | |
b34976b6 | 4601 | return TRUE; |
5bd4f169 | 4602 | |
65f38f15 AM |
4603 | /* If there are no references to this symbol that do not use the |
4604 | GOT, we don't need to generate a copy reloc. */ | |
4605 | if ((h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0) | |
b34976b6 | 4606 | return TRUE; |
65f38f15 | 4607 | |
f4656909 | 4608 | if (ELIMINATE_COPY_RELOCS) |
65f38f15 | 4609 | { |
f4656909 AM |
4610 | struct ppc_link_hash_entry * eh; |
4611 | struct ppc_dyn_relocs *p; | |
65f38f15 | 4612 | |
f4656909 AM |
4613 | eh = (struct ppc_link_hash_entry *) h; |
4614 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
4615 | { | |
4616 | s = p->sec->output_section; | |
4617 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
4618 | break; | |
4619 | } | |
4620 | ||
4621 | /* If we didn't find any dynamic relocs in read-only sections, then | |
4622 | we'll be keeping the dynamic relocs and avoiding the copy reloc. */ | |
4623 | if (p == NULL) | |
4624 | { | |
4625 | h->elf_link_hash_flags &= ~ELF_LINK_NON_GOT_REF; | |
4626 | return TRUE; | |
4627 | } | |
65f38f15 AM |
4628 | } |
4629 | ||
5d35169e | 4630 | if (h->plt.plist != NULL) |
97b639ba AM |
4631 | { |
4632 | /* We should never get here, but unfortunately there are versions | |
4633 | of gcc out there that improperly (for this ABI) put initialized | |
4634 | function pointers, vtable refs and suchlike in read-only | |
4635 | sections. Allow them to proceed, but warn that this might | |
4636 | break at runtime. */ | |
4637 | (*_bfd_error_handler) | |
4638 | (_("copy reloc against `%s' requires lazy plt linking; " | |
4639 | "avoid setting LD_BIND_NOW=1 or upgrade gcc"), | |
4640 | h->root.root.string); | |
4641 | } | |
5d35169e AM |
4642 | |
4643 | /* This is a reference to a symbol defined by a dynamic object which | |
4644 | is not a function. */ | |
4645 | ||
5bd4f169 AM |
4646 | /* We must allocate the symbol in our .dynbss section, which will |
4647 | become part of the .bss section of the executable. There will be | |
4648 | an entry for this symbol in the .dynsym section. The dynamic | |
4649 | object will contain position independent code, so all references | |
4650 | from the dynamic object to this symbol will go through the global | |
4651 | offset table. The dynamic linker will use the .dynsym entry to | |
4652 | determine the address it must put in the global offset table, so | |
4653 | both the dynamic object and the regular object will refer to the | |
4654 | same memory location for the variable. */ | |
5bd4f169 | 4655 | |
04c9666a AM |
4656 | /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker |
4657 | to copy the initial value out of the dynamic object and into the | |
5bd4f169 AM |
4658 | runtime process image. We need to remember the offset into the |
4659 | .rela.bss section we are going to use. */ | |
4660 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) | |
4661 | { | |
4ce794b7 | 4662 | htab->relbss->_raw_size += sizeof (Elf64_External_Rela); |
5bd4f169 AM |
4663 | h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_COPY; |
4664 | } | |
4665 | ||
4666 | /* We need to figure out the alignment required for this symbol. I | |
4667 | have no idea how ELF linkers handle this. */ | |
4668 | power_of_two = bfd_log2 (h->size); | |
4669 | if (power_of_two > 4) | |
4670 | power_of_two = 4; | |
4671 | ||
4672 | /* Apply the required alignment. */ | |
4ce794b7 | 4673 | s = htab->dynbss; |
65f38f15 AM |
4674 | s->_raw_size = BFD_ALIGN (s->_raw_size, (bfd_size_type) (1 << power_of_two)); |
4675 | if (power_of_two > bfd_get_section_alignment (htab->elf.dynobj, s)) | |
5bd4f169 | 4676 | { |
65f38f15 | 4677 | if (! bfd_set_section_alignment (htab->elf.dynobj, s, power_of_two)) |
b34976b6 | 4678 | return FALSE; |
5bd4f169 AM |
4679 | } |
4680 | ||
4681 | /* Define the symbol as being at this point in the section. */ | |
4682 | h->root.u.def.section = s; | |
4683 | h->root.u.def.value = s->_raw_size; | |
4684 | ||
4685 | /* Increment the section size to make room for the symbol. */ | |
4686 | s->_raw_size += h->size; | |
4687 | ||
b34976b6 | 4688 | return TRUE; |
5bd4f169 AM |
4689 | } |
4690 | ||
e86ce104 AM |
4691 | /* If given a function descriptor symbol, hide both the function code |
4692 | sym and the descriptor. */ | |
4693 | static void | |
4ce794b7 AM |
4694 | ppc64_elf_hide_symbol (struct bfd_link_info *info, |
4695 | struct elf_link_hash_entry *h, | |
4696 | bfd_boolean force_local) | |
e86ce104 AM |
4697 | { |
4698 | _bfd_elf_link_hash_hide_symbol (info, h, force_local); | |
4699 | ||
4700 | if (((struct ppc_link_hash_entry *) h)->is_func_descriptor) | |
4701 | { | |
721956f4 | 4702 | struct elf_link_hash_entry *fh = ((struct ppc_link_hash_entry *) h)->oh; |
e86ce104 | 4703 | |
721956f4 | 4704 | if (fh == NULL) |
d1329ca3 AM |
4705 | { |
4706 | const char *p, *q; | |
4707 | struct ppc_link_hash_table *htab; | |
4708 | char save; | |
4709 | ||
4710 | /* We aren't supposed to use alloca in BFD because on | |
4711 | systems which do not have alloca the version in libiberty | |
4712 | calls xmalloc, which might cause the program to crash | |
4713 | when it runs out of memory. This function doesn't have a | |
4714 | return status, so there's no way to gracefully return an | |
4715 | error. So cheat. We know that string[-1] can be safely | |
4716 | dereferenced; It's either a string in an ELF string | |
4717 | table, or allocated in an objalloc structure. */ | |
4718 | ||
4719 | p = h->root.root.string - 1; | |
4720 | save = *p; | |
4721 | *(char *) p = '.'; | |
4722 | htab = ppc_hash_table (info); | |
b34976b6 | 4723 | fh = elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE); |
d1329ca3 AM |
4724 | *(char *) p = save; |
4725 | ||
4726 | /* Unfortunately, if it so happens that the string we were | |
4727 | looking for was allocated immediately before this string, | |
4728 | then we overwrote the string terminator. That's the only | |
4729 | reason the lookup should fail. */ | |
4730 | if (fh == NULL) | |
4731 | { | |
4732 | q = h->root.root.string + strlen (h->root.root.string); | |
4733 | while (q >= h->root.root.string && *q == *p) | |
4734 | --q, --p; | |
4735 | if (q < h->root.root.string && *p == '.') | |
b34976b6 | 4736 | fh = elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE); |
d1329ca3 AM |
4737 | } |
4738 | if (fh != NULL) | |
4739 | { | |
4740 | ((struct ppc_link_hash_entry *) h)->oh = fh; | |
4741 | ((struct ppc_link_hash_entry *) fh)->oh = h; | |
4742 | } | |
4743 | } | |
e86ce104 AM |
4744 | if (fh != NULL) |
4745 | _bfd_elf_link_hash_hide_symbol (info, fh, force_local); | |
4746 | } | |
4747 | } | |
4748 | ||
411e1bfb | 4749 | static bfd_boolean |
4ce794b7 AM |
4750 | get_sym_h (struct elf_link_hash_entry **hp, Elf_Internal_Sym **symp, |
4751 | asection **symsecp, char **tls_maskp, Elf_Internal_Sym **locsymsp, | |
4752 | unsigned long r_symndx, bfd *ibfd) | |
411e1bfb AM |
4753 | { |
4754 | Elf_Internal_Shdr *symtab_hdr = &elf_tdata (ibfd)->symtab_hdr; | |
4755 | ||
4756 | if (r_symndx >= symtab_hdr->sh_info) | |
4757 | { | |
4758 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd); | |
4759 | struct elf_link_hash_entry *h; | |
4760 | ||
4761 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
4762 | while (h->root.type == bfd_link_hash_indirect | |
4763 | || h->root.type == bfd_link_hash_warning) | |
4764 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
4765 | ||
4766 | if (hp != NULL) | |
4767 | *hp = h; | |
4768 | ||
4769 | if (symp != NULL) | |
4770 | *symp = NULL; | |
4771 | ||
4772 | if (symsecp != NULL) | |
4773 | { | |
4774 | asection *symsec = NULL; | |
4775 | if (h->root.type == bfd_link_hash_defined | |
4776 | || h->root.type == bfd_link_hash_defweak) | |
4777 | symsec = h->root.u.def.section; | |
4778 | *symsecp = symsec; | |
4779 | } | |
4780 | ||
e7b938ca | 4781 | if (tls_maskp != NULL) |
411e1bfb AM |
4782 | { |
4783 | struct ppc_link_hash_entry *eh; | |
4784 | ||
4785 | eh = (struct ppc_link_hash_entry *) h; | |
e7b938ca | 4786 | *tls_maskp = &eh->tls_mask; |
411e1bfb AM |
4787 | } |
4788 | } | |
4789 | else | |
4790 | { | |
4791 | Elf_Internal_Sym *sym; | |
4792 | Elf_Internal_Sym *locsyms = *locsymsp; | |
4793 | ||
4794 | if (locsyms == NULL) | |
4795 | { | |
4796 | locsyms = (Elf_Internal_Sym *) symtab_hdr->contents; | |
4797 | if (locsyms == NULL) | |
4798 | locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr, | |
4799 | symtab_hdr->sh_info, | |
4800 | 0, NULL, NULL, NULL); | |
4801 | if (locsyms == NULL) | |
4802 | return FALSE; | |
4803 | *locsymsp = locsyms; | |
4804 | } | |
4805 | sym = locsyms + r_symndx; | |
4806 | ||
4807 | if (hp != NULL) | |
4808 | *hp = NULL; | |
4809 | ||
4810 | if (symp != NULL) | |
4811 | *symp = sym; | |
4812 | ||
4813 | if (symsecp != NULL) | |
4814 | { | |
4815 | asection *symsec = NULL; | |
4816 | if ((sym->st_shndx != SHN_UNDEF | |
4817 | && sym->st_shndx < SHN_LORESERVE) | |
4818 | || sym->st_shndx > SHN_HIRESERVE) | |
4819 | symsec = bfd_section_from_elf_index (ibfd, sym->st_shndx); | |
4820 | *symsecp = symsec; | |
4821 | } | |
4822 | ||
e7b938ca | 4823 | if (tls_maskp != NULL) |
411e1bfb AM |
4824 | { |
4825 | struct got_entry **lgot_ents; | |
e7b938ca | 4826 | char *tls_mask; |
411e1bfb | 4827 | |
e7b938ca | 4828 | tls_mask = NULL; |
411e1bfb AM |
4829 | lgot_ents = elf_local_got_ents (ibfd); |
4830 | if (lgot_ents != NULL) | |
4831 | { | |
e7b938ca AM |
4832 | char *lgot_masks = (char *) (lgot_ents + symtab_hdr->sh_info); |
4833 | tls_mask = &lgot_masks[r_symndx]; | |
411e1bfb | 4834 | } |
e7b938ca | 4835 | *tls_maskp = tls_mask; |
411e1bfb AM |
4836 | } |
4837 | } | |
4838 | return TRUE; | |
4839 | } | |
4840 | ||
e7b938ca | 4841 | /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on |
951fd09b | 4842 | error, 2 on a toc GD type suitable for optimization, 3 on a toc LD |
ad8e1ba5 | 4843 | type suitable for optimization, and 1 otherwise. */ |
951fd09b AM |
4844 | |
4845 | static int | |
0d4792f7 AM |
4846 | get_tls_mask (char **tls_maskp, unsigned long *toc_symndx, |
4847 | Elf_Internal_Sym **locsymsp, | |
4ce794b7 | 4848 | const Elf_Internal_Rela *rel, bfd *ibfd) |
411e1bfb AM |
4849 | { |
4850 | unsigned long r_symndx; | |
0d4792f7 | 4851 | int next_r; |
411e1bfb AM |
4852 | struct elf_link_hash_entry *h; |
4853 | Elf_Internal_Sym *sym; | |
4854 | asection *sec; | |
4855 | bfd_vma off; | |
4856 | ||
4857 | r_symndx = ELF64_R_SYM (rel->r_info); | |
e7b938ca | 4858 | if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd)) |
951fd09b | 4859 | return 0; |
411e1bfb | 4860 | |
e7b938ca | 4861 | if ((*tls_maskp != NULL && **tls_maskp != 0) |
411e1bfb AM |
4862 | || sec == NULL |
4863 | || ppc64_elf_section_data (sec)->t_symndx == NULL) | |
951fd09b | 4864 | return 1; |
411e1bfb AM |
4865 | |
4866 | /* Look inside a TOC section too. */ | |
4867 | if (h != NULL) | |
4868 | { | |
4869 | BFD_ASSERT (h->root.type == bfd_link_hash_defined); | |
4870 | off = h->root.u.def.value; | |
4871 | } | |
4872 | else | |
4873 | off = sym->st_value; | |
4874 | off += rel->r_addend; | |
4875 | BFD_ASSERT (off % 8 == 0); | |
4876 | r_symndx = ppc64_elf_section_data (sec)->t_symndx[off / 8]; | |
951fd09b | 4877 | next_r = ppc64_elf_section_data (sec)->t_symndx[off / 8 + 1]; |
e7b938ca | 4878 | if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd)) |
951fd09b | 4879 | return 0; |
0d4792f7 AM |
4880 | if (toc_symndx != NULL) |
4881 | *toc_symndx = r_symndx; | |
4882 | if ((h == NULL | |
4883 | || ((h->root.type == bfd_link_hash_defined | |
4884 | || h->root.type == bfd_link_hash_defweak) | |
4885 | && !(h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC))) | |
4886 | && (next_r == -1 || next_r == -2)) | |
4887 | return 1 - next_r; | |
951fd09b | 4888 | return 1; |
411e1bfb AM |
4889 | } |
4890 | ||
754021d0 AM |
4891 | /* Adjust all global syms defined in opd sections. In gcc generated |
4892 | code these will already have been done, but I suppose we have to | |
4893 | cater for all sorts of hand written assembly. */ | |
4894 | ||
4895 | static bfd_boolean | |
4896 | adjust_opd_syms (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED) | |
4897 | { | |
4898 | struct ppc_link_hash_entry *eh; | |
4899 | asection *sym_sec; | |
4900 | long *opd_adjust; | |
4901 | ||
4902 | if (h->root.type == bfd_link_hash_indirect) | |
4903 | return TRUE; | |
4904 | ||
4905 | if (h->root.type == bfd_link_hash_warning) | |
4906 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
4907 | ||
4908 | if (h->root.type != bfd_link_hash_defined | |
4909 | && h->root.type != bfd_link_hash_defweak) | |
4910 | return TRUE; | |
4911 | ||
4912 | eh = (struct ppc_link_hash_entry *) h; | |
4913 | if (eh->adjust_done) | |
4914 | return TRUE; | |
4915 | ||
4916 | sym_sec = eh->elf.root.u.def.section; | |
4917 | if (sym_sec != NULL | |
4918 | && elf_section_data (sym_sec) != NULL | |
4919 | && (opd_adjust = ppc64_elf_section_data (sym_sec)->opd.adjust) != NULL) | |
4920 | { | |
4921 | eh->elf.root.u.def.value += opd_adjust[eh->elf.root.u.def.value / 24]; | |
4922 | eh->adjust_done = 1; | |
4923 | } | |
4924 | return TRUE; | |
4925 | } | |
4926 | ||
4927 | /* Remove unused Official Procedure Descriptor entries. Currently we | |
4928 | only remove those associated with functions in discarded link-once | |
4929 | sections, or weakly defined functions that have been overridden. It | |
4930 | would be possible to remove many more entries for statically linked | |
4931 | applications. */ | |
4932 | ||
b34976b6 | 4933 | bfd_boolean |
4ce794b7 | 4934 | ppc64_elf_edit_opd (bfd *obfd, struct bfd_link_info *info) |
1e2f5b6e AM |
4935 | { |
4936 | bfd *ibfd; | |
754021d0 | 4937 | bfd_boolean some_edited = FALSE; |
1e2f5b6e | 4938 | |
411e1bfb | 4939 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) |
1e2f5b6e AM |
4940 | { |
4941 | asection *sec; | |
4942 | Elf_Internal_Rela *relstart, *rel, *relend; | |
4943 | Elf_Internal_Shdr *symtab_hdr; | |
6cdc0ccc | 4944 | Elf_Internal_Sym *local_syms; |
1e2f5b6e AM |
4945 | struct elf_link_hash_entry **sym_hashes; |
4946 | bfd_vma offset; | |
d6fe2dc1 | 4947 | bfd_size_type amt; |
1e2f5b6e | 4948 | long *adjust; |
b34976b6 | 4949 | bfd_boolean need_edit; |
1e2f5b6e AM |
4950 | |
4951 | sec = bfd_get_section_by_name (ibfd, ".opd"); | |
4952 | if (sec == NULL) | |
4953 | continue; | |
4954 | ||
d6fe2dc1 | 4955 | amt = sec->_raw_size * sizeof (long) / 24; |
f0abc2a1 | 4956 | adjust = ppc64_elf_section_data (sec)->opd.adjust; |
d6fe2dc1 AM |
4957 | if (adjust == NULL) |
4958 | { | |
4959 | /* Must be a ld -r link. ie. check_relocs hasn't been | |
4960 | called. */ | |
4ce794b7 | 4961 | adjust = bfd_zalloc (obfd, amt); |
f0abc2a1 | 4962 | ppc64_elf_section_data (sec)->opd.adjust = adjust; |
d6fe2dc1 | 4963 | } |
4ce794b7 | 4964 | memset (adjust, 0, amt); |
1e2f5b6e AM |
4965 | |
4966 | if (sec->output_section == bfd_abs_section_ptr) | |
4967 | continue; | |
4968 | ||
4969 | /* Look through the section relocs. */ | |
4970 | if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0) | |
4971 | continue; | |
4972 | ||
6cdc0ccc | 4973 | local_syms = NULL; |
1e2f5b6e AM |
4974 | symtab_hdr = &elf_tdata (ibfd)->symtab_hdr; |
4975 | sym_hashes = elf_sym_hashes (ibfd); | |
4976 | ||
4977 | /* Read the relocations. */ | |
4ce794b7 | 4978 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, |
45d6a902 | 4979 | info->keep_memory); |
1e2f5b6e | 4980 | if (relstart == NULL) |
b34976b6 | 4981 | return FALSE; |
1e2f5b6e AM |
4982 | |
4983 | /* First run through the relocs to check they are sane, and to | |
4984 | determine whether we need to edit this opd section. */ | |
b34976b6 | 4985 | need_edit = FALSE; |
1e2f5b6e AM |
4986 | offset = 0; |
4987 | relend = relstart + sec->reloc_count; | |
50bc7936 | 4988 | for (rel = relstart; rel < relend; ) |
1e2f5b6e | 4989 | { |
04c9666a | 4990 | enum elf_ppc64_reloc_type r_type; |
1e2f5b6e AM |
4991 | unsigned long r_symndx; |
4992 | asection *sym_sec; | |
4993 | struct elf_link_hash_entry *h; | |
4994 | Elf_Internal_Sym *sym; | |
4995 | ||
4996 | /* .opd contains a regular array of 24 byte entries. We're | |
4997 | only interested in the reloc pointing to a function entry | |
4998 | point. */ | |
50bc7936 AM |
4999 | if (rel->r_offset != offset |
5000 | || rel + 1 >= relend | |
5001 | || (rel + 1)->r_offset != offset + 8) | |
1e2f5b6e AM |
5002 | { |
5003 | /* If someone messes with .opd alignment then after a | |
5004 | "ld -r" we might have padding in the middle of .opd. | |
5005 | Also, there's nothing to prevent someone putting | |
5006 | something silly in .opd with the assembler. No .opd | |
b34976b6 | 5007 | optimization for them! */ |
1e2f5b6e AM |
5008 | (*_bfd_error_handler) |
5009 | (_("%s: .opd is not a regular array of opd entries"), | |
5010 | bfd_archive_filename (ibfd)); | |
b34976b6 | 5011 | need_edit = FALSE; |
1e2f5b6e AM |
5012 | break; |
5013 | } | |
5014 | ||
50bc7936 AM |
5015 | if ((r_type = ELF64_R_TYPE (rel->r_info)) != R_PPC64_ADDR64 |
5016 | || (r_type = ELF64_R_TYPE ((rel + 1)->r_info)) != R_PPC64_TOC) | |
5017 | { | |
5018 | (*_bfd_error_handler) | |
5019 | (_("%s: unexpected reloc type %u in .opd section"), | |
5020 | bfd_archive_filename (ibfd), r_type); | |
5021 | need_edit = FALSE; | |
5022 | break; | |
5023 | } | |
5024 | ||
1e2f5b6e | 5025 | r_symndx = ELF64_R_SYM (rel->r_info); |
411e1bfb AM |
5026 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, |
5027 | r_symndx, ibfd)) | |
50bc7936 | 5028 | goto error_ret; |
1e2f5b6e AM |
5029 | |
5030 | if (sym_sec == NULL || sym_sec->owner == NULL) | |
5031 | { | |
411e1bfb AM |
5032 | const char *sym_name; |
5033 | if (h != NULL) | |
5034 | sym_name = h->root.root.string; | |
5035 | else | |
5036 | sym_name = bfd_elf_local_sym_name (ibfd, sym); | |
5037 | ||
1e2f5b6e AM |
5038 | (*_bfd_error_handler) |
5039 | (_("%s: undefined sym `%s' in .opd section"), | |
5040 | bfd_archive_filename (ibfd), | |
411e1bfb | 5041 | sym_name); |
b34976b6 | 5042 | need_edit = FALSE; |
1e2f5b6e AM |
5043 | break; |
5044 | } | |
5045 | ||
51020317 AM |
5046 | /* opd entries are always for functions defined in the |
5047 | current input bfd. If the symbol isn't defined in the | |
5048 | input bfd, then we won't be using the function in this | |
5049 | bfd; It must be defined in a linkonce section in another | |
5050 | bfd, or is weak. It's also possible that we are | |
5051 | discarding the function due to a linker script /DISCARD/, | |
5052 | which we test for via the output_section. */ | |
5053 | if (sym_sec->owner != ibfd | |
5054 | || sym_sec->output_section == bfd_abs_section_ptr) | |
b34976b6 | 5055 | need_edit = TRUE; |
1e2f5b6e AM |
5056 | |
5057 | offset += 24; | |
50bc7936 AM |
5058 | rel += 2; |
5059 | /* Allow for the possibility of a reloc on the third word. */ | |
5060 | if (rel < relend | |
5061 | && rel->r_offset == offset - 8) | |
5062 | rel += 1; | |
1e2f5b6e AM |
5063 | } |
5064 | ||
5065 | if (need_edit) | |
5066 | { | |
5067 | Elf_Internal_Rela *write_rel; | |
5068 | bfd_byte *rptr, *wptr; | |
b34976b6 | 5069 | bfd_boolean skip; |
1e2f5b6e AM |
5070 | |
5071 | /* This seems a waste of time as input .opd sections are all | |
5072 | zeros as generated by gcc, but I suppose there's no reason | |
5073 | this will always be so. We might start putting something in | |
5074 | the third word of .opd entries. */ | |
5075 | if ((sec->flags & SEC_IN_MEMORY) == 0) | |
5076 | { | |
5077 | bfd_byte *loc = bfd_alloc (ibfd, sec->_raw_size); | |
6cdc0ccc | 5078 | if (loc == NULL |
4ce794b7 | 5079 | || !bfd_get_section_contents (ibfd, sec, loc, 0, |
6cdc0ccc AM |
5080 | sec->_raw_size)) |
5081 | { | |
50bc7936 | 5082 | error_ret: |
6cdc0ccc AM |
5083 | if (local_syms != NULL |
5084 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
5085 | free (local_syms); | |
6cdc0ccc AM |
5086 | if (elf_section_data (sec)->relocs != relstart) |
5087 | free (relstart); | |
b34976b6 | 5088 | return FALSE; |
6cdc0ccc | 5089 | } |
1e2f5b6e AM |
5090 | sec->contents = loc; |
5091 | sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS); | |
5092 | } | |
5093 | ||
5094 | elf_section_data (sec)->relocs = relstart; | |
5095 | ||
5096 | wptr = sec->contents; | |
5097 | rptr = sec->contents; | |
5098 | write_rel = relstart; | |
b34976b6 | 5099 | skip = FALSE; |
1e2f5b6e AM |
5100 | offset = 0; |
5101 | for (rel = relstart; rel < relend; rel++) | |
5102 | { | |
50bc7936 AM |
5103 | unsigned long r_symndx; |
5104 | asection *sym_sec; | |
5105 | struct elf_link_hash_entry *h; | |
5106 | Elf_Internal_Sym *sym; | |
5107 | ||
5108 | r_symndx = ELF64_R_SYM (rel->r_info); | |
5109 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
d37c89e5 | 5110 | r_symndx, ibfd)) |
50bc7936 AM |
5111 | goto error_ret; |
5112 | ||
1e2f5b6e AM |
5113 | if (rel->r_offset == offset) |
5114 | { | |
50bc7936 AM |
5115 | struct ppc_link_hash_entry *fdh = NULL; |
5116 | if (h != NULL) | |
5117 | fdh = get_fdh ((struct ppc_link_hash_entry *) h, | |
5118 | ppc_hash_table (info)); | |
1e2f5b6e | 5119 | |
51020317 AM |
5120 | skip = (sym_sec->owner != ibfd |
5121 | || sym_sec->output_section == bfd_abs_section_ptr); | |
a4aa0fb7 AM |
5122 | if (skip) |
5123 | { | |
0be617ce | 5124 | if (h != NULL && sym_sec->owner == ibfd) |
a4aa0fb7 AM |
5125 | { |
5126 | /* Arrange for the function descriptor sym | |
5127 | to be dropped. */ | |
d6fe2dc1 AM |
5128 | fdh->elf.root.u.def.value = 0; |
5129 | fdh->elf.root.u.def.section = sym_sec; | |
a4aa0fb7 AM |
5130 | } |
5131 | } | |
5132 | else | |
1e2f5b6e AM |
5133 | { |
5134 | /* We'll be keeping this opd entry. */ | |
5135 | ||
5136 | if (h != NULL) | |
5137 | { | |
754021d0 AM |
5138 | /* Redefine the function descriptor symbol to |
5139 | this location in the opd section. It is | |
5140 | necessary to update the value here rather | |
5141 | than using an array of adjustments as we do | |
5142 | for local symbols, because various places | |
5143 | in the generic ELF code use the value | |
5144 | stored in u.def.value. */ | |
d6fe2dc1 | 5145 | fdh->elf.root.u.def.value = wptr - sec->contents; |
754021d0 | 5146 | fdh->adjust_done = 1; |
1e2f5b6e | 5147 | } |
754021d0 AM |
5148 | |
5149 | /* Local syms are a bit tricky. We could | |
5150 | tweak them as they can be cached, but | |
5151 | we'd need to look through the local syms | |
5152 | for the function descriptor sym which we | |
5153 | don't have at the moment. So keep an | |
5154 | array of adjustments. */ | |
5155 | adjust[rel->r_offset / 24] = wptr - rptr; | |
1e2f5b6e AM |
5156 | |
5157 | if (wptr != rptr) | |
5158 | memcpy (wptr, rptr, 24); | |
5159 | wptr += 24; | |
5160 | } | |
5161 | rptr += 24; | |
5162 | offset += 24; | |
5163 | } | |
5164 | ||
50bc7936 AM |
5165 | if (skip) |
5166 | { | |
5167 | BFD_ASSERT (MUST_BE_DYN_RELOC (ELF64_R_TYPE (rel->r_info))); | |
5168 | if (info->shared) | |
5169 | { | |
5170 | /* We won't be needing dynamic relocs here. */ | |
5171 | struct ppc_dyn_relocs **pp; | |
5172 | struct ppc_dyn_relocs *p; | |
5173 | ||
5174 | if (h != NULL) | |
5175 | pp = &((struct ppc_link_hash_entry *) h)->dyn_relocs; | |
5176 | else if (sym_sec != NULL) | |
5177 | pp = ((struct ppc_dyn_relocs **) | |
5178 | &elf_section_data (sym_sec)->local_dynrel); | |
5179 | else | |
5180 | pp = ((struct ppc_dyn_relocs **) | |
5181 | &elf_section_data (sec)->local_dynrel); | |
5182 | while ((p = *pp) != NULL) | |
5183 | { | |
5184 | if (p->sec == sec) | |
5185 | { | |
5186 | p->count -= 1; | |
5187 | if (p->count == 0) | |
d37c89e5 | 5188 | *pp = p->next; |
50bc7936 AM |
5189 | break; |
5190 | } | |
5191 | pp = &p->next; | |
5192 | } | |
5193 | } | |
5194 | } | |
5195 | else | |
1e2f5b6e | 5196 | { |
50bc7936 AM |
5197 | /* We need to adjust any reloc offsets to point to the |
5198 | new opd entries. While we're at it, we may as well | |
5199 | remove redundant relocs. */ | |
1e2f5b6e AM |
5200 | rel->r_offset += wptr - rptr; |
5201 | if (write_rel != rel) | |
5202 | memcpy (write_rel, rel, sizeof (*rel)); | |
5203 | ++write_rel; | |
5204 | } | |
5205 | } | |
5206 | ||
5207 | sec->_cooked_size = wptr - sec->contents; | |
5208 | sec->reloc_count = write_rel - relstart; | |
cdcf6e38 AM |
5209 | /* Fudge the size too, as this is used later in |
5210 | elf_bfd_final_link if we are emitting relocs. */ | |
5211 | elf_section_data (sec)->rel_hdr.sh_size | |
5212 | = sec->reloc_count * elf_section_data (sec)->rel_hdr.sh_entsize; | |
5213 | BFD_ASSERT (elf_section_data (sec)->rel_hdr2 == NULL); | |
754021d0 | 5214 | some_edited = TRUE; |
1e2f5b6e | 5215 | } |
6cdc0ccc | 5216 | else if (elf_section_data (sec)->relocs != relstart) |
1e2f5b6e | 5217 | free (relstart); |
6cdc0ccc | 5218 | |
411e1bfb AM |
5219 | if (local_syms != NULL |
5220 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
5221 | { | |
5222 | if (!info->keep_memory) | |
5223 | free (local_syms); | |
5224 | else | |
5225 | symtab_hdr->contents = (unsigned char *) local_syms; | |
5226 | } | |
5227 | } | |
5228 | ||
754021d0 AM |
5229 | if (some_edited) |
5230 | elf_link_hash_traverse (elf_hash_table (info), adjust_opd_syms, NULL); | |
5231 | ||
411e1bfb AM |
5232 | return TRUE; |
5233 | } | |
5234 | ||
e1918d23 | 5235 | /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */ |
411e1bfb | 5236 | |
e1918d23 | 5237 | asection * |
4ce794b7 | 5238 | ppc64_elf_tls_setup (bfd *obfd, struct bfd_link_info *info) |
411e1bfb | 5239 | { |
411e1bfb AM |
5240 | struct ppc_link_hash_table *htab; |
5241 | ||
411e1bfb | 5242 | htab = ppc_hash_table (info); |
a48ebf4d AM |
5243 | if (htab->tls_get_addr != NULL) |
5244 | { | |
5245 | struct elf_link_hash_entry *h = htab->tls_get_addr; | |
5246 | ||
5247 | while (h->root.type == bfd_link_hash_indirect | |
5248 | || h->root.type == bfd_link_hash_warning) | |
5249 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
5250 | ||
5251 | htab->tls_get_addr = h; | |
5252 | } | |
5253 | ||
e1918d23 | 5254 | return _bfd_elf_tls_setup (obfd, info); |
951fd09b | 5255 | } |
411e1bfb | 5256 | |
951fd09b AM |
5257 | /* Run through all the TLS relocs looking for optimization |
5258 | opportunities. The linker has been hacked (see ppc64elf.em) to do | |
5259 | a preliminary section layout so that we know the TLS segment | |
5260 | offsets. We can't optimize earlier because some optimizations need | |
5261 | to know the tp offset, and we need to optimize before allocating | |
5262 | dynamic relocations. */ | |
5263 | ||
5264 | bfd_boolean | |
4ce794b7 | 5265 | ppc64_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED, struct bfd_link_info *info) |
951fd09b AM |
5266 | { |
5267 | bfd *ibfd; | |
5268 | asection *sec; | |
5269 | struct ppc_link_hash_table *htab; | |
5270 | ||
1049f94e | 5271 | if (info->relocatable || info->shared) |
411e1bfb AM |
5272 | return TRUE; |
5273 | ||
951fd09b | 5274 | htab = ppc_hash_table (info); |
411e1bfb AM |
5275 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) |
5276 | { | |
5277 | Elf_Internal_Sym *locsyms = NULL; | |
5278 | ||
5279 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
5280 | if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section)) | |
5281 | { | |
5282 | Elf_Internal_Rela *relstart, *rel, *relend; | |
5283 | int expecting_tls_get_addr; | |
5284 | ||
5285 | /* Read the relocations. */ | |
4ce794b7 | 5286 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, |
45d6a902 | 5287 | info->keep_memory); |
411e1bfb AM |
5288 | if (relstart == NULL) |
5289 | return FALSE; | |
5290 | ||
5291 | expecting_tls_get_addr = 0; | |
5292 | relend = relstart + sec->reloc_count; | |
5293 | for (rel = relstart; rel < relend; rel++) | |
5294 | { | |
5295 | enum elf_ppc64_reloc_type r_type; | |
5296 | unsigned long r_symndx; | |
5297 | struct elf_link_hash_entry *h; | |
5298 | Elf_Internal_Sym *sym; | |
5299 | asection *sym_sec; | |
e7b938ca AM |
5300 | char *tls_mask; |
5301 | char tls_set, tls_clear, tls_type = 0; | |
411e1bfb | 5302 | bfd_vma value; |
951fd09b | 5303 | bfd_boolean ok_tprel, is_local; |
411e1bfb AM |
5304 | |
5305 | r_symndx = ELF64_R_SYM (rel->r_info); | |
e7b938ca | 5306 | if (!get_sym_h (&h, &sym, &sym_sec, &tls_mask, &locsyms, |
411e1bfb AM |
5307 | r_symndx, ibfd)) |
5308 | { | |
5309 | err_free_rel: | |
5310 | if (elf_section_data (sec)->relocs != relstart) | |
5311 | free (relstart); | |
5312 | if (locsyms != NULL | |
5313 | && (elf_tdata (ibfd)->symtab_hdr.contents | |
5314 | != (unsigned char *) locsyms)) | |
5315 | free (locsyms); | |
5316 | return FALSE; | |
5317 | } | |
5318 | ||
5319 | if (h != NULL) | |
5320 | { | |
5321 | if (h->root.type != bfd_link_hash_defined | |
5322 | && h->root.type != bfd_link_hash_defweak) | |
5323 | continue; | |
5324 | value = h->root.u.def.value; | |
5325 | } | |
5326 | else | |
754021d0 AM |
5327 | { |
5328 | value = sym->st_value; | |
5329 | ||
5330 | if (elf_section_data (sym_sec) != NULL) | |
5331 | { | |
5332 | long *adjust; | |
5333 | adjust = ppc64_elf_section_data (sym_sec)->opd.adjust; | |
5334 | if (adjust != NULL) | |
5335 | value += adjust[value / 24]; | |
5336 | } | |
5337 | } | |
951fd09b | 5338 | |
411e1bfb | 5339 | ok_tprel = FALSE; |
951fd09b AM |
5340 | is_local = FALSE; |
5341 | if (h == NULL | |
5342 | || !(h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC)) | |
411e1bfb | 5343 | { |
951fd09b | 5344 | is_local = TRUE; |
411e1bfb AM |
5345 | value += sym_sec->output_offset; |
5346 | value += sym_sec->output_section->vma; | |
e1918d23 | 5347 | value -= htab->elf.tls_sec->vma; |
411e1bfb AM |
5348 | ok_tprel = (value + TP_OFFSET + ((bfd_vma) 1 << 31) |
5349 | < (bfd_vma) 1 << 32); | |
5350 | } | |
5351 | ||
4ce794b7 | 5352 | r_type = ELF64_R_TYPE (rel->r_info); |
411e1bfb AM |
5353 | switch (r_type) |
5354 | { | |
5355 | case R_PPC64_GOT_TLSLD16: | |
5356 | case R_PPC64_GOT_TLSLD16_LO: | |
5357 | case R_PPC64_GOT_TLSLD16_HI: | |
5358 | case R_PPC64_GOT_TLSLD16_HA: | |
951fd09b AM |
5359 | /* These relocs should never be against a symbol |
5360 | defined in a shared lib. Leave them alone if | |
5361 | that turns out to be the case. */ | |
e717da7e | 5362 | ppc64_tlsld_got (ibfd)->refcount -= 1; |
951fd09b AM |
5363 | if (!is_local) |
5364 | continue; | |
5365 | ||
951fd09b AM |
5366 | /* LD -> LE */ |
5367 | tls_set = 0; | |
5368 | tls_clear = TLS_LD; | |
e7b938ca | 5369 | tls_type = TLS_TLS | TLS_LD; |
411e1bfb AM |
5370 | expecting_tls_get_addr = 1; |
5371 | break; | |
5372 | ||
5373 | case R_PPC64_GOT_TLSGD16: | |
5374 | case R_PPC64_GOT_TLSGD16_LO: | |
5375 | case R_PPC64_GOT_TLSGD16_HI: | |
5376 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b | 5377 | if (ok_tprel) |
411e1bfb AM |
5378 | /* GD -> LE */ |
5379 | tls_set = 0; | |
5380 | else | |
5381 | /* GD -> IE */ | |
951fd09b AM |
5382 | tls_set = TLS_TLS | TLS_TPRELGD; |
5383 | tls_clear = TLS_GD; | |
e7b938ca | 5384 | tls_type = TLS_TLS | TLS_GD; |
411e1bfb AM |
5385 | expecting_tls_get_addr = 1; |
5386 | break; | |
5387 | ||
5388 | case R_PPC64_GOT_TPREL16_DS: | |
5389 | case R_PPC64_GOT_TPREL16_LO_DS: | |
5390 | case R_PPC64_GOT_TPREL16_HI: | |
5391 | case R_PPC64_GOT_TPREL16_HA: | |
5392 | expecting_tls_get_addr = 0; | |
5393 | if (ok_tprel) | |
5394 | { | |
5395 | /* IE -> LE */ | |
5396 | tls_set = 0; | |
5397 | tls_clear = TLS_TPREL; | |
e7b938ca | 5398 | tls_type = TLS_TLS | TLS_TPREL; |
411e1bfb AM |
5399 | break; |
5400 | } | |
5401 | else | |
5402 | continue; | |
5403 | ||
5404 | case R_PPC64_REL14: | |
5405 | case R_PPC64_REL14_BRTAKEN: | |
5406 | case R_PPC64_REL14_BRNTAKEN: | |
5407 | case R_PPC64_REL24: | |
5408 | if (h != NULL | |
5409 | && h == htab->tls_get_addr) | |
5410 | { | |
5411 | if (!expecting_tls_get_addr | |
5412 | && rel != relstart | |
5413 | && ((ELF64_R_TYPE (rel[-1].r_info) | |
5414 | == R_PPC64_TOC16) | |
5415 | || (ELF64_R_TYPE (rel[-1].r_info) | |
5416 | == R_PPC64_TOC16_LO))) | |
5417 | { | |
5418 | /* Check for toc tls entries. */ | |
5419 | char *toc_tls; | |
951fd09b | 5420 | int retval; |
411e1bfb | 5421 | |
0d4792f7 | 5422 | retval = get_tls_mask (&toc_tls, NULL, &locsyms, |
951fd09b AM |
5423 | rel - 1, ibfd); |
5424 | if (retval == 0) | |
411e1bfb AM |
5425 | goto err_free_rel; |
5426 | if (toc_tls != NULL) | |
951fd09b | 5427 | expecting_tls_get_addr = retval > 1; |
411e1bfb AM |
5428 | } |
5429 | ||
5430 | if (expecting_tls_get_addr) | |
5431 | { | |
5432 | struct plt_entry *ent; | |
5433 | for (ent = h->plt.plist; ent; ent = ent->next) | |
5434 | if (ent->addend == 0) | |
5435 | { | |
5436 | if (ent->plt.refcount > 0) | |
5437 | ent->plt.refcount -= 1; | |
5438 | break; | |
5439 | } | |
5440 | } | |
5441 | } | |
5442 | expecting_tls_get_addr = 0; | |
5443 | continue; | |
5444 | ||
5445 | case R_PPC64_TPREL64: | |
5446 | expecting_tls_get_addr = 0; | |
5447 | if (ok_tprel) | |
5448 | { | |
5449 | /* IE -> LE */ | |
5450 | tls_set = TLS_EXPLICIT; | |
5451 | tls_clear = TLS_TPREL; | |
5452 | break; | |
5453 | } | |
5454 | else | |
5455 | continue; | |
5456 | ||
5457 | case R_PPC64_DTPMOD64: | |
5458 | expecting_tls_get_addr = 0; | |
951fd09b AM |
5459 | if (rel + 1 < relend |
5460 | && (rel[1].r_info | |
5461 | == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)) | |
5462 | && rel[1].r_offset == rel->r_offset + 8) | |
411e1bfb | 5463 | { |
951fd09b | 5464 | if (ok_tprel) |
411e1bfb | 5465 | /* GD -> LE */ |
951fd09b | 5466 | tls_set = TLS_EXPLICIT | TLS_GD; |
411e1bfb AM |
5467 | else |
5468 | /* GD -> IE */ | |
951fd09b AM |
5469 | tls_set = TLS_EXPLICIT | TLS_GD | TLS_TPRELGD; |
5470 | tls_clear = TLS_GD; | |
411e1bfb AM |
5471 | } |
5472 | else | |
5473 | { | |
951fd09b AM |
5474 | if (!is_local) |
5475 | continue; | |
5476 | ||
5477 | /* LD -> LE */ | |
5478 | tls_set = TLS_EXPLICIT; | |
5479 | tls_clear = TLS_LD; | |
411e1bfb AM |
5480 | } |
5481 | break; | |
5482 | ||
5483 | default: | |
5484 | expecting_tls_get_addr = 0; | |
5485 | continue; | |
5486 | } | |
5487 | ||
5488 | if ((tls_set & TLS_EXPLICIT) == 0) | |
5489 | { | |
5490 | struct got_entry *ent; | |
5491 | ||
5492 | /* Adjust got entry for this reloc. */ | |
5493 | if (h != NULL) | |
5494 | ent = h->got.glist; | |
5495 | else | |
5496 | ent = elf_local_got_ents (ibfd)[r_symndx]; | |
5497 | ||
5498 | for (; ent != NULL; ent = ent->next) | |
5499 | if (ent->addend == rel->r_addend | |
e717da7e | 5500 | && ent->owner == ibfd |
e7b938ca | 5501 | && ent->tls_type == tls_type) |
411e1bfb AM |
5502 | break; |
5503 | if (ent == NULL) | |
5504 | abort (); | |
5505 | ||
5506 | if (tls_set == 0) | |
5507 | { | |
5508 | /* We managed to get rid of a got entry. */ | |
5509 | if (ent->got.refcount > 0) | |
5510 | ent->got.refcount -= 1; | |
5511 | } | |
411e1bfb AM |
5512 | } |
5513 | else if (h != NULL) | |
5514 | { | |
5515 | struct ppc_link_hash_entry * eh; | |
5516 | struct ppc_dyn_relocs **pp; | |
5517 | struct ppc_dyn_relocs *p; | |
5518 | ||
5519 | /* Adjust dynamic relocs. */ | |
5520 | eh = (struct ppc_link_hash_entry *) h; | |
5521 | for (pp = &eh->dyn_relocs; | |
5522 | (p = *pp) != NULL; | |
5523 | pp = &p->next) | |
5524 | if (p->sec == sec) | |
5525 | { | |
5526 | /* If we got rid of a DTPMOD/DTPREL reloc | |
5527 | pair then we'll lose one or two dyn | |
5528 | relocs. */ | |
951fd09b | 5529 | if (tls_set == (TLS_EXPLICIT | TLS_GD)) |
411e1bfb | 5530 | p->count -= 1; |
951fd09b | 5531 | p->count -= 1; |
411e1bfb AM |
5532 | if (p->count == 0) |
5533 | *pp = p->next; | |
5534 | break; | |
5535 | } | |
5536 | } | |
5537 | ||
e7b938ca AM |
5538 | *tls_mask |= tls_set; |
5539 | *tls_mask &= ~tls_clear; | |
411e1bfb AM |
5540 | } |
5541 | ||
5542 | if (elf_section_data (sec)->relocs != relstart) | |
5543 | free (relstart); | |
5544 | } | |
5545 | ||
5546 | if (locsyms != NULL | |
5547 | && (elf_tdata (ibfd)->symtab_hdr.contents | |
5548 | != (unsigned char *) locsyms)) | |
6cdc0ccc AM |
5549 | { |
5550 | if (!info->keep_memory) | |
411e1bfb | 5551 | free (locsyms); |
6cdc0ccc | 5552 | else |
411e1bfb | 5553 | elf_tdata (ibfd)->symtab_hdr.contents = (unsigned char *) locsyms; |
6cdc0ccc | 5554 | } |
1e2f5b6e | 5555 | } |
b34976b6 | 5556 | return TRUE; |
1e2f5b6e | 5557 | } |
b34976b6 | 5558 | |
65f38f15 AM |
5559 | /* This is the condition under which ppc64_elf_finish_dynamic_symbol |
5560 | will be called from elflink.h. If elflink.h doesn't call our | |
5561 | finish_dynamic_symbol routine, we'll need to do something about | |
5562 | initializing any .plt and .got entries in ppc64_elf_relocate_section. */ | |
f4656909 | 5563 | #define WILL_CALL_FINISH_DYNAMIC_SYMBOL(DYN, SHARED, H) \ |
65f38f15 | 5564 | ((DYN) \ |
f4656909 | 5565 | && ((SHARED) \ |
65f38f15 AM |
5566 | || ((H)->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0) \ |
5567 | && ((H)->dynindx != -1 \ | |
5568 | || ((H)->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0)) | |
5bd4f169 | 5569 | |
65f38f15 AM |
5570 | /* Allocate space in .plt, .got and associated reloc sections for |
5571 | dynamic relocs. */ | |
5bd4f169 | 5572 | |
b34976b6 | 5573 | static bfd_boolean |
4ce794b7 | 5574 | allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf) |
5bd4f169 | 5575 | { |
65f38f15 AM |
5576 | struct bfd_link_info *info; |
5577 | struct ppc_link_hash_table *htab; | |
5bd4f169 | 5578 | asection *s; |
65f38f15 AM |
5579 | struct ppc_link_hash_entry *eh; |
5580 | struct ppc_dyn_relocs *p; | |
411e1bfb | 5581 | struct got_entry *gent; |
5bd4f169 | 5582 | |
e92d460e | 5583 | if (h->root.type == bfd_link_hash_indirect) |
b34976b6 | 5584 | return TRUE; |
5bd4f169 | 5585 | |
e92d460e AM |
5586 | if (h->root.type == bfd_link_hash_warning) |
5587 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
5588 | ||
65f38f15 AM |
5589 | info = (struct bfd_link_info *) inf; |
5590 | htab = ppc_hash_table (info); | |
5bd4f169 | 5591 | |
65f38f15 | 5592 | if (htab->elf.dynamic_sections_created |
411e1bfb | 5593 | && h->dynindx != -1 |
9c7a29a3 | 5594 | && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h)) |
5bd4f169 | 5595 | { |
411e1bfb AM |
5596 | struct plt_entry *pent; |
5597 | bfd_boolean doneone = FALSE; | |
5598 | for (pent = h->plt.plist; pent != NULL; pent = pent->next) | |
5599 | if (pent->plt.refcount > 0) | |
5600 | { | |
5601 | BFD_ASSERT (((struct ppc_link_hash_entry *) h)->is_func_descriptor); | |
5602 | ||
5603 | /* If this is the first .plt entry, make room for the special | |
5604 | first entry. */ | |
4ce794b7 | 5605 | s = htab->plt; |
411e1bfb AM |
5606 | if (s->_raw_size == 0) |
5607 | s->_raw_size += PLT_INITIAL_ENTRY_SIZE; | |
5608 | ||
5609 | pent->plt.offset = s->_raw_size; | |
5610 | ||
5611 | /* Make room for this entry. */ | |
5612 | s->_raw_size += PLT_ENTRY_SIZE; | |
5613 | ||
5614 | /* Make room for the .glink code. */ | |
4ce794b7 | 5615 | s = htab->glink; |
411e1bfb AM |
5616 | if (s->_raw_size == 0) |
5617 | s->_raw_size += GLINK_CALL_STUB_SIZE; | |
5618 | /* We need bigger stubs past index 32767. */ | |
5619 | if (s->_raw_size >= GLINK_CALL_STUB_SIZE + 32768*2*4) | |
5620 | s->_raw_size += 4; | |
5621 | s->_raw_size += 2*4; | |
5622 | ||
5623 | /* We also need to make an entry in the .rela.plt section. */ | |
4ce794b7 | 5624 | s = htab->relplt; |
411e1bfb AM |
5625 | s->_raw_size += sizeof (Elf64_External_Rela); |
5626 | doneone = TRUE; | |
5627 | } | |
5628 | else | |
5629 | pent->plt.offset = (bfd_vma) -1; | |
5630 | if (!doneone) | |
65f38f15 | 5631 | { |
411e1bfb | 5632 | h->plt.plist = NULL; |
65f38f15 AM |
5633 | h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT; |
5634 | } | |
5635 | } | |
5636 | else | |
5637 | { | |
411e1bfb | 5638 | h->plt.plist = NULL; |
65f38f15 AM |
5639 | h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT; |
5640 | } | |
5641 | ||
951fd09b AM |
5642 | eh = (struct ppc_link_hash_entry *) h; |
5643 | /* Run through the TLS GD got entries first if we're changing them | |
5644 | to TPREL. */ | |
e7b938ca | 5645 | if ((eh->tls_mask & TLS_TPRELGD) != 0) |
951fd09b AM |
5646 | for (gent = h->got.glist; gent != NULL; gent = gent->next) |
5647 | if (gent->got.refcount > 0 | |
5648 | && (gent->tls_type & TLS_GD) != 0) | |
5649 | { | |
5650 | /* This was a GD entry that has been converted to TPREL. If | |
5651 | there happens to be a TPREL entry we can use that one. */ | |
5652 | struct got_entry *ent; | |
5653 | for (ent = h->got.glist; ent != NULL; ent = ent->next) | |
5654 | if (ent->got.refcount > 0 | |
5655 | && (ent->tls_type & TLS_TPREL) != 0 | |
e717da7e AM |
5656 | && ent->addend == gent->addend |
5657 | && ent->owner == gent->owner) | |
951fd09b AM |
5658 | { |
5659 | gent->got.refcount = 0; | |
5660 | break; | |
5661 | } | |
5662 | ||
5663 | /* If not, then we'll be using our own TPREL entry. */ | |
5664 | if (gent->got.refcount != 0) | |
5665 | gent->tls_type = TLS_TLS | TLS_TPREL; | |
5666 | } | |
5667 | ||
411e1bfb AM |
5668 | for (gent = h->got.glist; gent != NULL; gent = gent->next) |
5669 | if (gent->got.refcount > 0) | |
5670 | { | |
951fd09b AM |
5671 | bfd_boolean dyn; |
5672 | ||
411e1bfb | 5673 | /* Make sure this symbol is output as a dynamic symbol. |
951fd09b AM |
5674 | Undefined weak syms won't yet be marked as dynamic, |
5675 | nor will all TLS symbols. */ | |
411e1bfb AM |
5676 | if (h->dynindx == -1 |
5677 | && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0) | |
5678 | { | |
5679 | if (! bfd_elf64_link_record_dynamic_symbol (info, h)) | |
5680 | return FALSE; | |
5681 | } | |
65f38f15 | 5682 | |
d881513a AM |
5683 | if ((gent->tls_type & TLS_LD) != 0 |
5684 | && !(h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC)) | |
411e1bfb | 5685 | { |
e717da7e | 5686 | gent->got.offset = ppc64_tlsld_got (gent->owner)->offset; |
951fd09b | 5687 | continue; |
411e1bfb | 5688 | } |
951fd09b | 5689 | |
e717da7e | 5690 | s = ppc64_elf_tdata (gent->owner)->got; |
951fd09b | 5691 | gent->got.offset = s->_raw_size; |
d881513a AM |
5692 | s->_raw_size |
5693 | += (gent->tls_type & eh->tls_mask & (TLS_GD | TLS_LD)) ? 16 : 8; | |
951fd09b | 5694 | dyn = htab->elf.dynamic_sections_created; |
4e795f50 AM |
5695 | if ((info->shared |
5696 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)) | |
5697 | && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
5698 | || h->root.type != bfd_link_hash_undefweak)) | |
e717da7e | 5699 | ppc64_elf_tdata (gent->owner)->relgot->_raw_size |
e7b938ca | 5700 | += (gent->tls_type & eh->tls_mask & TLS_GD |
951fd09b AM |
5701 | ? 2 * sizeof (Elf64_External_Rela) |
5702 | : sizeof (Elf64_External_Rela)); | |
411e1bfb AM |
5703 | } |
5704 | else | |
5705 | gent->got.offset = (bfd_vma) -1; | |
65f38f15 | 5706 | |
65f38f15 | 5707 | if (eh->dyn_relocs == NULL) |
b34976b6 | 5708 | return TRUE; |
65f38f15 AM |
5709 | |
5710 | /* In the shared -Bsymbolic case, discard space allocated for | |
5711 | dynamic pc-relative relocs against symbols which turn out to be | |
5712 | defined in regular objects. For the normal shared case, discard | |
5713 | space for relocs that have become local due to symbol visibility | |
5714 | changes. */ | |
5715 | ||
5716 | if (info->shared) | |
5717 | { | |
9c7a29a3 AM |
5718 | /* Relocs that use pc_count are those that appear on a call insn, |
5719 | or certain REL relocs (see MUST_BE_DYN_RELOC) that can be | |
5720 | generated via assembly. We want calls to protected symbols to | |
5721 | resolve directly to the function rather than going via the plt. | |
5722 | If people want function pointer comparisons to work as expected | |
5723 | then they should avoid writing weird assembly. */ | |
09695f56 | 5724 | if (SYMBOL_CALLS_LOCAL (info, h)) |
65f38f15 AM |
5725 | { |
5726 | struct ppc_dyn_relocs **pp; | |
5727 | ||
5728 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) | |
5bd4f169 | 5729 | { |
65f38f15 AM |
5730 | p->count -= p->pc_count; |
5731 | p->pc_count = 0; | |
5732 | if (p->count == 0) | |
5733 | *pp = p->next; | |
5734 | else | |
5735 | pp = &p->next; | |
5bd4f169 | 5736 | } |
65f38f15 | 5737 | } |
4e795f50 AM |
5738 | |
5739 | /* Also discard relocs on undefined weak syms with non-default | |
5740 | visibility. */ | |
5741 | if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
5742 | && h->root.type == bfd_link_hash_undefweak) | |
5743 | eh->dyn_relocs = NULL; | |
65f38f15 | 5744 | } |
f4656909 | 5745 | else if (ELIMINATE_COPY_RELOCS) |
65f38f15 AM |
5746 | { |
5747 | /* For the non-shared case, discard space for relocs against | |
5748 | symbols which turn out to need copy relocs or are not | |
5749 | dynamic. */ | |
5750 | ||
5751 | if ((h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0 | |
58ac9f71 AM |
5752 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0 |
5753 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0) | |
65f38f15 AM |
5754 | { |
5755 | /* Make sure this symbol is output as a dynamic symbol. | |
5756 | Undefined weak syms won't yet be marked as dynamic. */ | |
5757 | if (h->dynindx == -1 | |
5758 | && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0) | |
5759 | { | |
ec338859 | 5760 | if (! bfd_elf64_link_record_dynamic_symbol (info, h)) |
b34976b6 | 5761 | return FALSE; |
65f38f15 AM |
5762 | } |
5763 | ||
5764 | /* If that succeeded, we know we'll be keeping all the | |
5765 | relocs. */ | |
5766 | if (h->dynindx != -1) | |
5767 | goto keep; | |
5768 | } | |
5769 | ||
5770 | eh->dyn_relocs = NULL; | |
5771 | ||
ec338859 | 5772 | keep: ; |
65f38f15 AM |
5773 | } |
5774 | ||
5775 | /* Finally, allocate space. */ | |
5776 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
5777 | { | |
5778 | asection *sreloc = elf_section_data (p->sec)->sreloc; | |
5779 | sreloc->_raw_size += p->count * sizeof (Elf64_External_Rela); | |
5780 | } | |
5781 | ||
b34976b6 | 5782 | return TRUE; |
65f38f15 AM |
5783 | } |
5784 | ||
5785 | /* Find any dynamic relocs that apply to read-only sections. */ | |
5786 | ||
b34976b6 | 5787 | static bfd_boolean |
4ce794b7 | 5788 | readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf) |
65f38f15 AM |
5789 | { |
5790 | struct ppc_link_hash_entry *eh; | |
5791 | struct ppc_dyn_relocs *p; | |
5792 | ||
e92d460e AM |
5793 | if (h->root.type == bfd_link_hash_warning) |
5794 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
5795 | ||
65f38f15 AM |
5796 | eh = (struct ppc_link_hash_entry *) h; |
5797 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
5798 | { | |
5799 | asection *s = p->sec->output_section; | |
5800 | ||
5801 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
5802 | { | |
4ce794b7 | 5803 | struct bfd_link_info *info = inf; |
65f38f15 AM |
5804 | |
5805 | info->flags |= DF_TEXTREL; | |
5806 | ||
5807 | /* Not an error, just cut short the traversal. */ | |
b34976b6 | 5808 | return FALSE; |
65f38f15 AM |
5809 | } |
5810 | } | |
b34976b6 | 5811 | return TRUE; |
65f38f15 AM |
5812 | } |
5813 | ||
5814 | /* Set the sizes of the dynamic sections. */ | |
5815 | ||
b34976b6 | 5816 | static bfd_boolean |
4ce794b7 AM |
5817 | ppc64_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED, |
5818 | struct bfd_link_info *info) | |
65f38f15 AM |
5819 | { |
5820 | struct ppc_link_hash_table *htab; | |
5821 | bfd *dynobj; | |
5822 | asection *s; | |
b34976b6 | 5823 | bfd_boolean relocs; |
65f38f15 AM |
5824 | bfd *ibfd; |
5825 | ||
5826 | htab = ppc_hash_table (info); | |
5827 | dynobj = htab->elf.dynobj; | |
5828 | if (dynobj == NULL) | |
5829 | abort (); | |
5830 | ||
5831 | if (htab->elf.dynamic_sections_created) | |
5832 | { | |
5833 | /* Set the contents of the .interp section to the interpreter. */ | |
36af4a4e | 5834 | if (info->executable) |
65f38f15 AM |
5835 | { |
5836 | s = bfd_get_section_by_name (dynobj, ".interp"); | |
5837 | if (s == NULL) | |
5838 | abort (); | |
5839 | s->_raw_size = sizeof ELF_DYNAMIC_INTERPRETER; | |
5840 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; | |
5841 | } | |
5842 | } | |
5843 | ||
5844 | /* Set up .got offsets for local syms, and space for local dynamic | |
5845 | relocs. */ | |
5846 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
5847 | { | |
411e1bfb AM |
5848 | struct got_entry **lgot_ents; |
5849 | struct got_entry **end_lgot_ents; | |
e7b938ca | 5850 | char *lgot_masks; |
65f38f15 AM |
5851 | bfd_size_type locsymcount; |
5852 | Elf_Internal_Shdr *symtab_hdr; | |
5853 | asection *srel; | |
5854 | ||
5855 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour) | |
5856 | continue; | |
5857 | ||
e717da7e AM |
5858 | if (ppc64_tlsld_got (ibfd)->refcount > 0) |
5859 | { | |
5860 | s = ppc64_elf_tdata (ibfd)->got; | |
5861 | ppc64_tlsld_got (ibfd)->offset = s->_raw_size; | |
5862 | s->_raw_size += 16; | |
5863 | if (info->shared) | |
5864 | { | |
5865 | srel = ppc64_elf_tdata (ibfd)->relgot; | |
5866 | srel->_raw_size += sizeof (Elf64_External_Rela); | |
5867 | } | |
5868 | } | |
5869 | else | |
5870 | ppc64_tlsld_got (ibfd)->offset = (bfd_vma) -1; | |
5871 | ||
65f38f15 AM |
5872 | for (s = ibfd->sections; s != NULL; s = s->next) |
5873 | { | |
ec338859 | 5874 | struct ppc_dyn_relocs *p; |
65f38f15 | 5875 | |
ec338859 AM |
5876 | for (p = *((struct ppc_dyn_relocs **) |
5877 | &elf_section_data (s)->local_dynrel); | |
5878 | p != NULL; | |
5879 | p = p->next) | |
65f38f15 | 5880 | { |
ec338859 AM |
5881 | if (!bfd_is_abs_section (p->sec) |
5882 | && bfd_is_abs_section (p->sec->output_section)) | |
5883 | { | |
5884 | /* Input section has been discarded, either because | |
5885 | it is a copy of a linkonce section or due to | |
5886 | linker script /DISCARD/, so we'll be discarding | |
5887 | the relocs too. */ | |
5888 | } | |
248866a8 | 5889 | else if (p->count != 0) |
ec338859 AM |
5890 | { |
5891 | srel = elf_section_data (p->sec)->sreloc; | |
5892 | srel->_raw_size += p->count * sizeof (Elf64_External_Rela); | |
248866a8 AM |
5893 | if ((p->sec->output_section->flags & SEC_READONLY) != 0) |
5894 | info->flags |= DF_TEXTREL; | |
ec338859 | 5895 | } |
65f38f15 AM |
5896 | } |
5897 | } | |
5898 | ||
411e1bfb AM |
5899 | lgot_ents = elf_local_got_ents (ibfd); |
5900 | if (!lgot_ents) | |
65f38f15 AM |
5901 | continue; |
5902 | ||
5903 | symtab_hdr = &elf_tdata (ibfd)->symtab_hdr; | |
5904 | locsymcount = symtab_hdr->sh_info; | |
411e1bfb | 5905 | end_lgot_ents = lgot_ents + locsymcount; |
e7b938ca | 5906 | lgot_masks = (char *) end_lgot_ents; |
e717da7e AM |
5907 | s = ppc64_elf_tdata (ibfd)->got; |
5908 | srel = ppc64_elf_tdata (ibfd)->relgot; | |
e7b938ca | 5909 | for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks) |
65f38f15 | 5910 | { |
411e1bfb AM |
5911 | struct got_entry *ent; |
5912 | ||
5913 | for (ent = *lgot_ents; ent != NULL; ent = ent->next) | |
5914 | if (ent->got.refcount > 0) | |
5915 | { | |
e7b938ca | 5916 | if ((ent->tls_type & *lgot_masks & TLS_LD) != 0) |
411e1bfb | 5917 | { |
e717da7e | 5918 | if (ppc64_tlsld_got (ibfd)->offset == (bfd_vma) -1) |
411e1bfb | 5919 | { |
e717da7e | 5920 | ppc64_tlsld_got (ibfd)->offset = s->_raw_size; |
411e1bfb AM |
5921 | s->_raw_size += 16; |
5922 | if (info->shared) | |
5923 | srel->_raw_size += sizeof (Elf64_External_Rela); | |
5924 | } | |
e717da7e | 5925 | ent->got.offset = ppc64_tlsld_got (ibfd)->offset; |
411e1bfb AM |
5926 | } |
5927 | else | |
5928 | { | |
5929 | ent->got.offset = s->_raw_size; | |
e7b938ca | 5930 | if ((ent->tls_type & *lgot_masks & TLS_GD) != 0) |
411e1bfb AM |
5931 | { |
5932 | s->_raw_size += 16; | |
5933 | if (info->shared) | |
5934 | srel->_raw_size += 2 * sizeof (Elf64_External_Rela); | |
5935 | } | |
5936 | else | |
5937 | { | |
5938 | s->_raw_size += 8; | |
5939 | if (info->shared) | |
5940 | srel->_raw_size += sizeof (Elf64_External_Rela); | |
5941 | } | |
5942 | } | |
5943 | } | |
5944 | else | |
5945 | ent->got.offset = (bfd_vma) -1; | |
65f38f15 AM |
5946 | } |
5947 | } | |
5948 | ||
5949 | /* Allocate global sym .plt and .got entries, and space for global | |
5950 | sym dynamic relocs. */ | |
4ce794b7 | 5951 | elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info); |
65f38f15 AM |
5952 | |
5953 | /* We now have determined the sizes of the various dynamic sections. | |
5954 | Allocate memory for them. */ | |
b34976b6 | 5955 | relocs = FALSE; |
65f38f15 AM |
5956 | for (s = dynobj->sections; s != NULL; s = s->next) |
5957 | { | |
5958 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
5959 | continue; | |
5960 | ||
411e1bfb AM |
5961 | /* Reset _cooked_size since prelim layout will set it wrongly, |
5962 | and a non-zero _cooked_size sticks. */ | |
5963 | s->_cooked_size = 0; | |
5964 | ||
4ce794b7 | 5965 | if (s == htab->brlt || s == htab->relbrlt) |
721956f4 AM |
5966 | /* These haven't been allocated yet; don't strip. */ |
5967 | continue; | |
e717da7e AM |
5968 | else if (s == htab->got |
5969 | || s == htab->plt | |
4ce794b7 | 5970 | || s == htab->glink) |
65f38f15 AM |
5971 | { |
5972 | /* Strip this section if we don't need it; see the | |
5973 | comment below. */ | |
5bd4f169 | 5974 | } |
65f38f15 | 5975 | else if (strncmp (bfd_get_section_name (dynobj, s), ".rela", 5) == 0) |
5bd4f169 AM |
5976 | { |
5977 | if (s->_raw_size == 0) | |
5978 | { | |
5979 | /* If we don't need this section, strip it from the | |
5980 | output file. This is mostly to handle .rela.bss and | |
5981 | .rela.plt. We must create both sections in | |
5982 | create_dynamic_sections, because they must be created | |
5983 | before the linker maps input sections to output | |
5984 | sections. The linker does that before | |
5985 | adjust_dynamic_symbol is called, and it is that | |
5986 | function which decides whether anything needs to go | |
5987 | into these sections. */ | |
5bd4f169 AM |
5988 | } |
5989 | else | |
5990 | { | |
4ce794b7 | 5991 | if (s != htab->relplt) |
b34976b6 | 5992 | relocs = TRUE; |
5bd4f169 AM |
5993 | |
5994 | /* We use the reloc_count field as a counter if we need | |
5995 | to copy relocs into the output file. */ | |
5996 | s->reloc_count = 0; | |
5997 | } | |
5998 | } | |
65f38f15 | 5999 | else |
5bd4f169 AM |
6000 | { |
6001 | /* It's not one of our sections, so don't allocate space. */ | |
6002 | continue; | |
6003 | } | |
6004 | ||
65f38f15 | 6005 | if (s->_raw_size == 0) |
5bd4f169 AM |
6006 | { |
6007 | _bfd_strip_section_from_output (info, s); | |
6008 | continue; | |
6009 | } | |
6010 | ||
5f333394 | 6011 | /* .plt is in the bss section. We don't initialise it. */ |
680a3378 | 6012 | if (s == htab->plt) |
5f333394 AM |
6013 | continue; |
6014 | ||
65f38f15 AM |
6015 | /* Allocate memory for the section contents. We use bfd_zalloc |
6016 | here in case unused entries are not reclaimed before the | |
6017 | section's contents are written out. This should not happen, | |
411e1bfb AM |
6018 | but this way if it does we get a R_PPC64_NONE reloc in .rela |
6019 | sections instead of garbage. | |
6020 | We also rely on the section contents being zero when writing | |
6021 | the GOT. */ | |
4ce794b7 | 6022 | s->contents = bfd_zalloc (dynobj, s->_raw_size); |
65f38f15 | 6023 | if (s->contents == NULL) |
b34976b6 | 6024 | return FALSE; |
5bd4f169 AM |
6025 | } |
6026 | ||
e717da7e AM |
6027 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) |
6028 | { | |
6029 | s = ppc64_elf_tdata (ibfd)->got; | |
6030 | if (s != NULL && s != htab->got) | |
6031 | { | |
6032 | s->_cooked_size = 0; | |
6033 | if (s->_raw_size == 0) | |
6034 | _bfd_strip_section_from_output (info, s); | |
6035 | else | |
6036 | { | |
6037 | s->contents = bfd_zalloc (ibfd, s->_raw_size); | |
6038 | if (s->contents == NULL) | |
6039 | return FALSE; | |
6040 | } | |
6041 | } | |
6042 | s = ppc64_elf_tdata (ibfd)->relgot; | |
6043 | if (s != NULL) | |
6044 | { | |
6045 | s->_cooked_size = 0; | |
6046 | if (s->_raw_size == 0) | |
6047 | _bfd_strip_section_from_output (info, s); | |
6048 | else | |
6049 | { | |
6050 | s->contents = bfd_zalloc (ibfd, s->_raw_size); | |
6051 | if (s->contents == NULL) | |
6052 | return FALSE; | |
6053 | relocs = TRUE; | |
6054 | s->reloc_count = 0; | |
6055 | } | |
6056 | } | |
6057 | } | |
6058 | ||
e86ce104 | 6059 | if (htab->elf.dynamic_sections_created) |
5bd4f169 AM |
6060 | { |
6061 | /* Add some entries to the .dynamic section. We fill in the | |
6062 | values later, in ppc64_elf_finish_dynamic_sections, but we | |
6063 | must add the entries now so that we get the correct size for | |
6064 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
6065 | dynamic linker and used by the debugger. */ | |
dc810e39 | 6066 | #define add_dynamic_entry(TAG, VAL) \ |
4ce794b7 | 6067 | bfd_elf64_add_dynamic_entry (info, (TAG), (VAL)) |
dc810e39 | 6068 | |
36af4a4e | 6069 | if (info->executable) |
5bd4f169 | 6070 | { |
dc810e39 | 6071 | if (!add_dynamic_entry (DT_DEBUG, 0)) |
b34976b6 | 6072 | return FALSE; |
5bd4f169 AM |
6073 | } |
6074 | ||
4ce794b7 | 6075 | if (htab->plt != NULL && htab->plt->_raw_size != 0) |
5bd4f169 | 6076 | { |
dc810e39 AM |
6077 | if (!add_dynamic_entry (DT_PLTGOT, 0) |
6078 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
6079 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
5d1634d7 AM |
6080 | || !add_dynamic_entry (DT_JMPREL, 0) |
6081 | || !add_dynamic_entry (DT_PPC64_GLINK, 0)) | |
b34976b6 | 6082 | return FALSE; |
5bd4f169 AM |
6083 | } |
6084 | ||
19397422 AM |
6085 | if (NO_OPD_RELOCS) |
6086 | { | |
6087 | if (!add_dynamic_entry (DT_PPC64_OPD, 0) | |
6088 | || !add_dynamic_entry (DT_PPC64_OPDSZ, 0)) | |
b34976b6 | 6089 | return FALSE; |
19397422 AM |
6090 | } |
6091 | ||
5bd4f169 AM |
6092 | if (relocs) |
6093 | { | |
dc810e39 AM |
6094 | if (!add_dynamic_entry (DT_RELA, 0) |
6095 | || !add_dynamic_entry (DT_RELASZ, 0) | |
6096 | || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela))) | |
b34976b6 | 6097 | return FALSE; |
5bd4f169 | 6098 | |
65f38f15 AM |
6099 | /* If any dynamic relocs apply to a read-only section, |
6100 | then we need a DT_TEXTREL entry. */ | |
248866a8 | 6101 | if ((info->flags & DF_TEXTREL) == 0) |
4ce794b7 | 6102 | elf_link_hash_traverse (&htab->elf, readonly_dynrelocs, info); |
5bd4f169 | 6103 | |
65f38f15 | 6104 | if ((info->flags & DF_TEXTREL) != 0) |
5bd4f169 | 6105 | { |
65f38f15 | 6106 | if (!add_dynamic_entry (DT_TEXTREL, 0)) |
b34976b6 | 6107 | return FALSE; |
5bd4f169 | 6108 | } |
5bd4f169 | 6109 | } |
5bd4f169 | 6110 | } |
65f38f15 | 6111 | #undef add_dynamic_entry |
5bd4f169 | 6112 | |
b34976b6 | 6113 | return TRUE; |
5bd4f169 AM |
6114 | } |
6115 | ||
721956f4 | 6116 | /* Determine the type of stub needed, if any, for a call. */ |
5bd4f169 | 6117 | |
4ce794b7 AM |
6118 | static inline enum ppc_stub_type |
6119 | ppc_type_of_stub (asection *input_sec, | |
6120 | const Elf_Internal_Rela *rel, | |
6121 | struct ppc_link_hash_entry **hash, | |
6122 | bfd_vma destination) | |
5bd4f169 | 6123 | { |
721956f4 AM |
6124 | struct ppc_link_hash_entry *h = *hash; |
6125 | bfd_vma location; | |
6126 | bfd_vma branch_offset; | |
6127 | bfd_vma max_branch_offset; | |
4ce794b7 | 6128 | enum elf_ppc64_reloc_type r_type; |
5bd4f169 | 6129 | |
721956f4 AM |
6130 | if (h != NULL) |
6131 | { | |
6132 | if (h->oh != NULL | |
721956f4 | 6133 | && h->oh->dynindx != -1) |
5bd4f169 | 6134 | { |
411e1bfb AM |
6135 | struct plt_entry *ent; |
6136 | for (ent = h->oh->plt.plist; ent != NULL; ent = ent->next) | |
6137 | if (ent->addend == rel->r_addend | |
6138 | && ent->plt.offset != (bfd_vma) -1) | |
6139 | { | |
6140 | *hash = (struct ppc_link_hash_entry *) h->oh; | |
6141 | return ppc_stub_plt_call; | |
6142 | } | |
5bd4f169 AM |
6143 | } |
6144 | ||
ee7de3e6 AM |
6145 | if (!(h->elf.root.type == bfd_link_hash_defined |
6146 | || h->elf.root.type == bfd_link_hash_defweak) | |
6147 | || h->elf.root.u.def.section->output_section == NULL) | |
721956f4 | 6148 | return ppc_stub_none; |
5d1634d7 | 6149 | } |
5d1634d7 | 6150 | |
721956f4 AM |
6151 | /* Determine where the call point is. */ |
6152 | location = (input_sec->output_offset | |
6153 | + input_sec->output_section->vma | |
6154 | + rel->r_offset); | |
5d1634d7 | 6155 | |
721956f4 AM |
6156 | branch_offset = destination - location; |
6157 | r_type = ELF64_R_TYPE (rel->r_info); | |
5d1634d7 | 6158 | |
721956f4 AM |
6159 | /* Determine if a long branch stub is needed. */ |
6160 | max_branch_offset = 1 << 25; | |
4ce794b7 | 6161 | if (r_type != R_PPC64_REL24) |
721956f4 | 6162 | max_branch_offset = 1 << 15; |
5d1634d7 | 6163 | |
721956f4 AM |
6164 | if (branch_offset + max_branch_offset >= 2 * max_branch_offset) |
6165 | /* We need a stub. Figure out whether a long_branch or plt_branch | |
6166 | is needed later. */ | |
6167 | return ppc_stub_long_branch; | |
5d1634d7 | 6168 | |
721956f4 | 6169 | return ppc_stub_none; |
5d1634d7 AM |
6170 | } |
6171 | ||
6172 | /* Build a .plt call stub. */ | |
6173 | ||
4ce794b7 AM |
6174 | static inline bfd_byte * |
6175 | build_plt_stub (bfd *obfd, bfd_byte *p, int offset) | |
5d1634d7 AM |
6176 | { |
6177 | #define PPC_LO(v) ((v) & 0xffff) | |
6178 | #define PPC_HI(v) (((v) >> 16) & 0xffff) | |
6179 | #define PPC_HA(v) PPC_HI ((v) + 0x8000) | |
6180 | ||
5d1634d7 | 6181 | bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (offset), p), p += 4; |
ad8e1ba5 | 6182 | bfd_put_32 (obfd, STD_R2_40R1, p), p += 4; |
5d1634d7 AM |
6183 | bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset), p), p += 4; |
6184 | if (PPC_HA (offset + 8) != PPC_HA (offset)) | |
ad8e1ba5 | 6185 | bfd_put_32 (obfd, ADDIS_R12_R12 | 1, p), p += 4; |
5d1634d7 AM |
6186 | offset += 8; |
6187 | bfd_put_32 (obfd, LD_R2_0R12 | PPC_LO (offset), p), p += 4; | |
6188 | if (PPC_HA (offset + 8) != PPC_HA (offset)) | |
ad8e1ba5 | 6189 | bfd_put_32 (obfd, ADDIS_R12_R12 | 1, p), p += 4; |
5d1634d7 AM |
6190 | offset += 8; |
6191 | bfd_put_32 (obfd, MTCTR_R11, p), p += 4; | |
6192 | bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset), p), p += 4; | |
6193 | bfd_put_32 (obfd, BCTR, p), p += 4; | |
6194 | return p; | |
6195 | } | |
6196 | ||
b34976b6 | 6197 | static bfd_boolean |
4ce794b7 | 6198 | ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg) |
5d1634d7 | 6199 | { |
721956f4 AM |
6200 | struct ppc_stub_hash_entry *stub_entry; |
6201 | struct ppc_branch_hash_entry *br_entry; | |
5d1634d7 AM |
6202 | struct bfd_link_info *info; |
6203 | struct ppc_link_hash_table *htab; | |
721956f4 AM |
6204 | bfd_byte *loc; |
6205 | bfd_byte *p; | |
6206 | unsigned int indx; | |
411e1bfb | 6207 | struct plt_entry *ent; |
721956f4 AM |
6208 | bfd_vma off; |
6209 | int size; | |
5d1634d7 | 6210 | |
721956f4 AM |
6211 | /* Massage our args to the form they really have. */ |
6212 | stub_entry = (struct ppc_stub_hash_entry *) gen_entry; | |
4ce794b7 | 6213 | info = in_arg; |
5d1634d7 | 6214 | |
5d1634d7 AM |
6215 | htab = ppc_hash_table (info); |
6216 | ||
721956f4 | 6217 | /* Make a note of the offset within the stubs for this entry. */ |
97b639ba AM |
6218 | stub_entry->stub_offset = stub_entry->stub_sec->_cooked_size; |
6219 | loc = stub_entry->stub_sec->contents + stub_entry->stub_offset; | |
721956f4 | 6220 | |
4ce794b7 | 6221 | htab->stub_count[stub_entry->stub_type - 1] += 1; |
721956f4 | 6222 | switch (stub_entry->stub_type) |
5d1634d7 | 6223 | { |
721956f4 | 6224 | case ppc_stub_long_branch: |
ad8e1ba5 | 6225 | case ppc_stub_long_branch_r2off: |
721956f4 AM |
6226 | /* Branches are relative. This is where we are going to. */ |
6227 | off = (stub_entry->target_value | |
6228 | + stub_entry->target_section->output_offset | |
6229 | + stub_entry->target_section->output_section->vma); | |
5d1634d7 | 6230 | |
721956f4 AM |
6231 | /* And this is where we are coming from. */ |
6232 | off -= (stub_entry->stub_offset | |
97b639ba AM |
6233 | + stub_entry->stub_sec->output_offset |
6234 | + stub_entry->stub_sec->output_section->vma); | |
e86ce104 | 6235 | |
ad8e1ba5 AM |
6236 | if (stub_entry->stub_type != ppc_stub_long_branch_r2off) |
6237 | size = 4; | |
6238 | else | |
6239 | { | |
6240 | bfd_vma r2off; | |
6241 | ||
6242 | r2off = (htab->stub_group[stub_entry->target_section->id].toc_off | |
6243 | - htab->stub_group[stub_entry->id_sec->id].toc_off); | |
97b639ba | 6244 | bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc); |
ad8e1ba5 | 6245 | loc += 4; |
97b639ba | 6246 | bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc); |
ad8e1ba5 | 6247 | loc += 4; |
97b639ba | 6248 | bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc); |
ad8e1ba5 AM |
6249 | loc += 4; |
6250 | off -= 12; | |
6251 | size = 16; | |
6252 | } | |
97b639ba | 6253 | bfd_put_32 (htab->stub_bfd, B_DOT | (off & 0x3fffffc), loc); |
ad8e1ba5 AM |
6254 | |
6255 | BFD_ASSERT (off + (1 << 25) < (bfd_vma) (1 << 26)); | |
721956f4 | 6256 | break; |
e86ce104 | 6257 | |
721956f4 | 6258 | case ppc_stub_plt_branch: |
ad8e1ba5 | 6259 | case ppc_stub_plt_branch_r2off: |
721956f4 AM |
6260 | br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table, |
6261 | stub_entry->root.string + 9, | |
b34976b6 | 6262 | FALSE, FALSE); |
721956f4 AM |
6263 | if (br_entry == NULL) |
6264 | { | |
6265 | (*_bfd_error_handler) (_("can't find branch stub `%s'"), | |
6266 | stub_entry->root.string + 9); | |
b34976b6 AM |
6267 | htab->stub_error = TRUE; |
6268 | return FALSE; | |
721956f4 AM |
6269 | } |
6270 | ||
6271 | off = (stub_entry->target_value | |
6272 | + stub_entry->target_section->output_offset | |
6273 | + stub_entry->target_section->output_section->vma); | |
6274 | ||
4ce794b7 AM |
6275 | bfd_put_64 (htab->brlt->owner, off, |
6276 | htab->brlt->contents + br_entry->offset); | |
721956f4 AM |
6277 | |
6278 | if (info->shared) | |
6279 | { | |
6280 | /* Create a reloc for the branch lookup table entry. */ | |
6281 | Elf_Internal_Rela rela; | |
ad8e1ba5 | 6282 | bfd_byte *rl; |
5d1634d7 | 6283 | |
721956f4 | 6284 | rela.r_offset = (br_entry->offset |
4ce794b7 AM |
6285 | + htab->brlt->output_offset |
6286 | + htab->brlt->output_section->vma); | |
721956f4 AM |
6287 | rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); |
6288 | rela.r_addend = off; | |
6289 | ||
4ce794b7 AM |
6290 | rl = htab->relbrlt->contents; |
6291 | rl += htab->relbrlt->reloc_count++ * sizeof (Elf64_External_Rela); | |
6292 | bfd_elf64_swap_reloca_out (htab->relbrlt->owner, &rela, rl); | |
721956f4 AM |
6293 | } |
6294 | ||
6295 | off = (br_entry->offset | |
4ce794b7 AM |
6296 | + htab->brlt->output_offset |
6297 | + htab->brlt->output_section->vma | |
6298 | - elf_gp (htab->brlt->output_section->owner) | |
ad8e1ba5 | 6299 | - htab->stub_group[stub_entry->id_sec->id].toc_off); |
721956f4 | 6300 | |
ad8e1ba5 | 6301 | if (off + 0x80008000 > 0xffffffff || (off & 7) != 0) |
5d1634d7 AM |
6302 | { |
6303 | (*_bfd_error_handler) | |
e86ce104 | 6304 | (_("linkage table error against `%s'"), |
721956f4 | 6305 | stub_entry->root.string); |
5d1634d7 | 6306 | bfd_set_error (bfd_error_bad_value); |
b34976b6 AM |
6307 | htab->stub_error = TRUE; |
6308 | return FALSE; | |
5d1634d7 | 6309 | } |
41bd81ab | 6310 | |
721956f4 | 6311 | indx = off; |
ad8e1ba5 AM |
6312 | if (stub_entry->stub_type != ppc_stub_plt_branch_r2off) |
6313 | { | |
97b639ba | 6314 | bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (indx), loc); |
ad8e1ba5 | 6315 | loc += 4; |
97b639ba | 6316 | bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (indx), loc); |
ad8e1ba5 AM |
6317 | size = 16; |
6318 | } | |
6319 | else | |
6320 | { | |
6321 | bfd_vma r2off; | |
6322 | ||
6323 | r2off = (htab->stub_group[stub_entry->target_section->id].toc_off | |
6324 | - htab->stub_group[stub_entry->id_sec->id].toc_off); | |
97b639ba | 6325 | bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc); |
ad8e1ba5 | 6326 | loc += 4; |
97b639ba | 6327 | bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (indx), loc); |
ad8e1ba5 | 6328 | loc += 4; |
97b639ba | 6329 | bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (indx), loc); |
ad8e1ba5 | 6330 | loc += 4; |
97b639ba | 6331 | bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc); |
ad8e1ba5 | 6332 | loc += 4; |
97b639ba | 6333 | bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc); |
ad8e1ba5 AM |
6334 | size = 28; |
6335 | } | |
6336 | loc += 4; | |
97b639ba | 6337 | bfd_put_32 (htab->stub_bfd, MTCTR_R11, loc); |
ad8e1ba5 | 6338 | loc += 4; |
97b639ba | 6339 | bfd_put_32 (htab->stub_bfd, BCTR, loc); |
721956f4 | 6340 | break; |
5d1634d7 | 6341 | |
721956f4 | 6342 | case ppc_stub_plt_call: |
c862ae31 AM |
6343 | /* Do the best we can for shared libraries built without |
6344 | exporting ".foo" for each "foo". This can happen when symbol | |
6345 | versioning scripts strip all bar a subset of symbols. */ | |
6346 | if (stub_entry->h->oh->root.type != bfd_link_hash_defined | |
6347 | && stub_entry->h->oh->root.type != bfd_link_hash_defweak) | |
6348 | { | |
6349 | /* Point the symbol at the stub. There may be multiple stubs, | |
6350 | we don't really care; The main thing is to make this sym | |
8f3bab57 AM |
6351 | defined somewhere. Maybe defining the symbol in the stub |
6352 | section is a silly idea. If we didn't do this, htab->top_id | |
6353 | could disappear. */ | |
c862ae31 AM |
6354 | stub_entry->h->oh->root.type = bfd_link_hash_defined; |
6355 | stub_entry->h->oh->root.u.def.section = stub_entry->stub_sec; | |
6356 | stub_entry->h->oh->root.u.def.value = stub_entry->stub_offset; | |
6357 | } | |
6358 | ||
721956f4 | 6359 | /* Now build the stub. */ |
411e1bfb AM |
6360 | off = (bfd_vma) -1; |
6361 | for (ent = stub_entry->h->elf.plt.plist; ent != NULL; ent = ent->next) | |
6362 | if (ent->addend == stub_entry->addend) | |
6363 | { | |
6364 | off = ent->plt.offset; | |
6365 | break; | |
6366 | } | |
721956f4 AM |
6367 | if (off >= (bfd_vma) -2) |
6368 | abort (); | |
6369 | ||
6370 | off &= ~ (bfd_vma) 1; | |
4ce794b7 AM |
6371 | off += (htab->plt->output_offset |
6372 | + htab->plt->output_section->vma | |
6373 | - elf_gp (htab->plt->output_section->owner) | |
ad8e1ba5 | 6374 | - htab->stub_group[stub_entry->id_sec->id].toc_off); |
721956f4 | 6375 | |
ad8e1ba5 | 6376 | if (off + 0x80008000 > 0xffffffff || (off & 7) != 0) |
721956f4 AM |
6377 | { |
6378 | (*_bfd_error_handler) | |
6379 | (_("linkage table error against `%s'"), | |
6380 | stub_entry->h->elf.root.root.string); | |
6381 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 AM |
6382 | htab->stub_error = TRUE; |
6383 | return FALSE; | |
721956f4 AM |
6384 | } |
6385 | ||
97b639ba | 6386 | p = build_plt_stub (htab->stub_bfd, loc, off); |
721956f4 AM |
6387 | size = p - loc; |
6388 | break; | |
6389 | ||
6390 | default: | |
6391 | BFD_FAIL (); | |
b34976b6 | 6392 | return FALSE; |
721956f4 AM |
6393 | } |
6394 | ||
97b639ba AM |
6395 | stub_entry->stub_sec->_cooked_size += size; |
6396 | ||
6397 | if (htab->emit_stub_syms | |
6398 | && !(stub_entry->stub_type == ppc_stub_plt_call | |
6399 | && stub_entry->h->oh->root.type == bfd_link_hash_defined | |
6400 | && stub_entry->h->oh->root.u.def.section == stub_entry->stub_sec | |
6401 | && stub_entry->h->oh->root.u.def.value == stub_entry->stub_offset)) | |
6402 | { | |
6403 | struct elf_link_hash_entry *h; | |
6404 | h = elf_link_hash_lookup (&htab->elf, stub_entry->root.string, | |
6405 | TRUE, FALSE, FALSE); | |
6406 | if (h == NULL) | |
6407 | return FALSE; | |
6408 | if (h->root.type == bfd_link_hash_new) | |
6409 | { | |
6410 | h->root.type = bfd_link_hash_defined; | |
6411 | h->root.u.def.section = stub_entry->stub_sec; | |
6412 | h->root.u.def.value = stub_entry->stub_offset; | |
6413 | h->elf_link_hash_flags = (ELF_LINK_HASH_REF_REGULAR | |
6414 | | ELF_LINK_HASH_DEF_REGULAR | |
6415 | | ELF_LINK_HASH_REF_REGULAR_NONWEAK | |
6416 | | ELF_LINK_FORCED_LOCAL); | |
6417 | } | |
6418 | } | |
6419 | ||
b34976b6 | 6420 | return TRUE; |
721956f4 AM |
6421 | } |
6422 | ||
6423 | /* As above, but don't actually build the stub. Just bump offset so | |
6424 | we know stub section sizes, and select plt_branch stubs where | |
6425 | long_branch stubs won't do. */ | |
6426 | ||
b34976b6 | 6427 | static bfd_boolean |
4ce794b7 | 6428 | ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg) |
721956f4 AM |
6429 | { |
6430 | struct ppc_stub_hash_entry *stub_entry; | |
63bc6f6c | 6431 | struct bfd_link_info *info; |
721956f4 AM |
6432 | struct ppc_link_hash_table *htab; |
6433 | bfd_vma off; | |
6434 | int size; | |
6435 | ||
6436 | /* Massage our args to the form they really have. */ | |
6437 | stub_entry = (struct ppc_stub_hash_entry *) gen_entry; | |
63bc6f6c AM |
6438 | info = in_arg; |
6439 | ||
6440 | htab = ppc_hash_table (info); | |
721956f4 AM |
6441 | |
6442 | if (stub_entry->stub_type == ppc_stub_plt_call) | |
6443 | { | |
411e1bfb | 6444 | struct plt_entry *ent; |
58ac9f71 | 6445 | off = (bfd_vma) -1; |
411e1bfb AM |
6446 | for (ent = stub_entry->h->elf.plt.plist; ent != NULL; ent = ent->next) |
6447 | if (ent->addend == stub_entry->addend) | |
6448 | { | |
6449 | off = ent->plt.offset & ~(bfd_vma) 1; | |
6450 | break; | |
6451 | } | |
58ac9f71 | 6452 | if (off >= (bfd_vma) -2) |
411e1bfb | 6453 | abort (); |
4ce794b7 AM |
6454 | off += (htab->plt->output_offset |
6455 | + htab->plt->output_section->vma | |
6456 | - elf_gp (htab->plt->output_section->owner) | |
ad8e1ba5 | 6457 | - htab->stub_group[stub_entry->id_sec->id].toc_off); |
721956f4 | 6458 | |
ad8e1ba5 | 6459 | size = PLT_CALL_STUB_SIZE; |
4ce794b7 | 6460 | if (PPC_HA (off + 16) != PPC_HA (off)) |
721956f4 AM |
6461 | size += 4; |
6462 | } | |
6463 | else | |
6464 | { | |
ad8e1ba5 AM |
6465 | /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off |
6466 | variants. */ | |
721956f4 AM |
6467 | off = (stub_entry->target_value |
6468 | + stub_entry->target_section->output_offset | |
6469 | + stub_entry->target_section->output_section->vma); | |
6470 | off -= (stub_entry->stub_sec->_raw_size | |
6471 | + stub_entry->stub_sec->output_offset | |
6472 | + stub_entry->stub_sec->output_section->vma); | |
6473 | ||
ad8e1ba5 AM |
6474 | /* Reset the stub type from the plt variant in case we now |
6475 | can reach with a shorter stub. */ | |
6476 | if (stub_entry->stub_type >= ppc_stub_plt_branch) | |
6477 | stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch; | |
6478 | ||
6479 | size = 4; | |
6480 | if (stub_entry->stub_type == ppc_stub_long_branch_r2off) | |
6481 | { | |
6482 | off -= 12; | |
6483 | size = 16; | |
6484 | } | |
6485 | ||
6486 | /* If the branch offset if too big, use a ppc_stub_plt_branch. */ | |
721956f4 AM |
6487 | if (off + (1 << 25) >= (bfd_vma) (1 << 26)) |
6488 | { | |
6489 | struct ppc_branch_hash_entry *br_entry; | |
6490 | ||
6491 | br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table, | |
6492 | stub_entry->root.string + 9, | |
b34976b6 | 6493 | TRUE, FALSE); |
721956f4 AM |
6494 | if (br_entry == NULL) |
6495 | { | |
6496 | (*_bfd_error_handler) (_("can't build branch stub `%s'"), | |
6497 | stub_entry->root.string + 9); | |
b34976b6 AM |
6498 | htab->stub_error = TRUE; |
6499 | return FALSE; | |
721956f4 AM |
6500 | } |
6501 | ||
6502 | if (br_entry->iter != htab->stub_iteration) | |
6503 | { | |
6504 | br_entry->iter = htab->stub_iteration; | |
4ce794b7 AM |
6505 | br_entry->offset = htab->brlt->_raw_size; |
6506 | htab->brlt->_raw_size += 8; | |
63bc6f6c AM |
6507 | |
6508 | if (info->shared) | |
6509 | htab->relbrlt->_raw_size += sizeof (Elf64_External_Rela); | |
721956f4 | 6510 | } |
ad8e1ba5 AM |
6511 | |
6512 | stub_entry->stub_type += ppc_stub_plt_branch - ppc_stub_long_branch; | |
721956f4 | 6513 | size = 16; |
ad8e1ba5 AM |
6514 | if (stub_entry->stub_type != ppc_stub_plt_branch) |
6515 | size = 28; | |
721956f4 AM |
6516 | } |
6517 | } | |
6518 | ||
6519 | stub_entry->stub_sec->_raw_size += size; | |
b34976b6 | 6520 | return TRUE; |
721956f4 AM |
6521 | } |
6522 | ||
6523 | /* Set up various things so that we can make a list of input sections | |
6524 | for each output section included in the link. Returns -1 on error, | |
cedb70c5 | 6525 | 0 when no stubs will be needed, and 1 on success. */ |
721956f4 AM |
6526 | |
6527 | int | |
4ce794b7 | 6528 | ppc64_elf_setup_section_lists (bfd *output_bfd, struct bfd_link_info *info) |
721956f4 AM |
6529 | { |
6530 | bfd *input_bfd; | |
734b6cf9 | 6531 | int top_id, top_index, id; |
721956f4 | 6532 | asection *section; |
734b6cf9 | 6533 | asection **input_list; |
721956f4 AM |
6534 | bfd_size_type amt; |
6535 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
6536 | ||
4ce794b7 | 6537 | if (htab->brlt == NULL) |
721956f4 AM |
6538 | return 0; |
6539 | ||
1e2f5b6e | 6540 | /* Find the top input section id. */ |
3d6f9012 | 6541 | for (input_bfd = info->input_bfds, top_id = 3; |
721956f4 AM |
6542 | input_bfd != NULL; |
6543 | input_bfd = input_bfd->link_next) | |
6544 | { | |
721956f4 AM |
6545 | for (section = input_bfd->sections; |
6546 | section != NULL; | |
6547 | section = section->next) | |
6548 | { | |
6549 | if (top_id < section->id) | |
6550 | top_id = section->id; | |
6551 | } | |
6552 | } | |
721956f4 | 6553 | |
8f3bab57 | 6554 | htab->top_id = top_id; |
721956f4 | 6555 | amt = sizeof (struct map_stub) * (top_id + 1); |
4ce794b7 | 6556 | htab->stub_group = bfd_zmalloc (amt); |
721956f4 AM |
6557 | if (htab->stub_group == NULL) |
6558 | return -1; | |
6559 | ||
3d6f9012 AM |
6560 | /* Set toc_off for com, und, abs and ind sections. */ |
6561 | for (id = 0; id < 3; id++) | |
6562 | htab->stub_group[id].toc_off = TOC_BASE_OFF; | |
721956f4 | 6563 | |
3d6f9012 | 6564 | elf_gp (output_bfd) = htab->toc_curr = ppc64_elf_toc (output_bfd); |
734b6cf9 AM |
6565 | |
6566 | /* We can't use output_bfd->section_count here to find the top output | |
6567 | section index as some sections may have been removed, and | |
6568 | _bfd_strip_section_from_output doesn't renumber the indices. */ | |
6569 | for (section = output_bfd->sections, top_index = 0; | |
6570 | section != NULL; | |
6571 | section = section->next) | |
6572 | { | |
6573 | if (top_index < section->index) | |
6574 | top_index = section->index; | |
6575 | } | |
6576 | ||
6577 | htab->top_index = top_index; | |
6578 | amt = sizeof (asection *) * (top_index + 1); | |
4ce794b7 | 6579 | input_list = bfd_zmalloc (amt); |
734b6cf9 AM |
6580 | htab->input_list = input_list; |
6581 | if (input_list == NULL) | |
6582 | return -1; | |
6583 | ||
721956f4 AM |
6584 | return 1; |
6585 | } | |
6586 | ||
e717da7e AM |
6587 | /* The linker repeatedly calls this function for each TOC input section |
6588 | and linker generated GOT section. Group input bfds such that the toc | |
6589 | within a group is less than 64k in size. Will break with cute linker | |
6590 | scripts that play games with dot in the output toc section. */ | |
ad8e1ba5 AM |
6591 | |
6592 | void | |
4ce794b7 | 6593 | ppc64_elf_next_toc_section (struct bfd_link_info *info, asection *isec) |
ad8e1ba5 AM |
6594 | { |
6595 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
6596 | ||
6597 | if (!htab->no_multi_toc) | |
6598 | { | |
6599 | bfd_vma addr = isec->output_offset + isec->output_section->vma; | |
6600 | bfd_vma off = addr - htab->toc_curr; | |
6601 | if (off + isec->_raw_size > 0x10000) | |
6602 | { | |
6603 | htab->toc_curr = addr; | |
6604 | htab->multi_toc_needed = 1; | |
6605 | } | |
6606 | elf_gp (isec->owner) = (htab->toc_curr | |
6607 | - elf_gp (isec->output_section->owner) | |
6608 | + TOC_BASE_OFF); | |
6609 | } | |
6610 | } | |
6611 | ||
6612 | /* Called after the last call to the above function. */ | |
6613 | ||
6614 | void | |
4ce794b7 AM |
6615 | ppc64_elf_reinit_toc (bfd *output_bfd ATTRIBUTE_UNUSED, |
6616 | struct bfd_link_info *info) | |
ad8e1ba5 AM |
6617 | { |
6618 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
ad8e1ba5 AM |
6619 | |
6620 | /* toc_curr tracks the TOC offset used for code sections below in | |
6621 | ppc64_elf_next_input_section. Start off at 0x8000. */ | |
3d6f9012 | 6622 | htab->toc_curr = TOC_BASE_OFF; |
ad8e1ba5 AM |
6623 | } |
6624 | ||
9b5ecbd0 AM |
6625 | /* No toc references were found in ISEC. If the code in ISEC makes no |
6626 | calls, then there's no need to use toc adjusting stubs when branching | |
6627 | into ISEC. Actually, indirect calls from ISEC are OK as they will | |
6628 | load r2. */ | |
6629 | ||
6630 | static int | |
4ce794b7 | 6631 | toc_adjusting_stub_needed (struct bfd_link_info *info, asection *isec) |
9b5ecbd0 AM |
6632 | { |
6633 | bfd_byte *contents; | |
6634 | bfd_size_type i; | |
6635 | int ret; | |
6636 | int branch_ok; | |
6637 | ||
772119ce AM |
6638 | /* We know none of our code bearing sections will need toc stubs. */ |
6639 | if ((isec->flags & SEC_LINKER_CREATED) != 0) | |
6640 | return 0; | |
6641 | ||
082c50f8 AM |
6642 | if (isec->_raw_size == 0) |
6643 | return 0; | |
6644 | ||
9b5ecbd0 AM |
6645 | /* Hack for linux kernel. .fixup contains branches, but only back to |
6646 | the function that hit an exception. */ | |
6647 | branch_ok = strcmp (isec->name, ".fixup") == 0; | |
6648 | ||
6649 | contents = elf_section_data (isec)->this_hdr.contents; | |
6650 | if (contents == NULL) | |
6651 | { | |
6652 | contents = bfd_malloc (isec->_raw_size); | |
6653 | if (contents == NULL) | |
6654 | return -1; | |
6655 | if (! bfd_get_section_contents (isec->owner, isec, contents, | |
e717da7e | 6656 | 0, isec->_raw_size)) |
9b5ecbd0 AM |
6657 | { |
6658 | free (contents); | |
6659 | return -1; | |
6660 | } | |
6661 | if (info->keep_memory) | |
6662 | elf_section_data (isec)->this_hdr.contents = contents; | |
6663 | } | |
6664 | ||
6665 | /* Code scan, because we don't necessarily have relocs on calls to | |
6666 | static functions. */ | |
6667 | ret = 0; | |
6668 | for (i = 0; i < isec->_raw_size; i += 4) | |
6669 | { | |
6670 | unsigned long insn = bfd_get_32 (isec->owner, contents + i); | |
6671 | /* Is this a branch? */ | |
772119ce | 6672 | if ((insn & (0x3f << 26)) == (18 << 26) |
9b5ecbd0 AM |
6673 | /* If branch and link, it's a function call. */ |
6674 | && ((insn & 1) != 0 | |
6675 | /* Sibling calls use a plain branch. I don't know a way | |
6676 | of deciding whether a branch is really a sibling call. */ | |
6677 | || !branch_ok)) | |
6678 | { | |
6679 | ret = 1; | |
6680 | break; | |
6681 | } | |
6682 | } | |
6683 | ||
6684 | if (elf_section_data (isec)->this_hdr.contents != contents) | |
6685 | free (contents); | |
6686 | return ret; | |
6687 | } | |
6688 | ||
721956f4 AM |
6689 | /* The linker repeatedly calls this function for each input section, |
6690 | in the order that input sections are linked into output sections. | |
6691 | Build lists of input sections to determine groupings between which | |
6692 | we may insert linker stubs. */ | |
6693 | ||
9b5ecbd0 | 6694 | bfd_boolean |
4ce794b7 | 6695 | ppc64_elf_next_input_section (struct bfd_link_info *info, asection *isec) |
721956f4 AM |
6696 | { |
6697 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
9b5ecbd0 | 6698 | int ret; |
721956f4 | 6699 | |
734b6cf9 AM |
6700 | if ((isec->output_section->flags & SEC_CODE) != 0 |
6701 | && isec->output_section->index <= htab->top_index) | |
721956f4 | 6702 | { |
734b6cf9 | 6703 | asection **list = htab->input_list + isec->output_section->index; |
3d6f9012 | 6704 | /* Steal the link_sec pointer for our list. */ |
721956f4 | 6705 | #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec) |
3d6f9012 AM |
6706 | /* This happens to make the list in reverse order, |
6707 | which is what we want. */ | |
734b6cf9 AM |
6708 | PREV_SEC (isec) = *list; |
6709 | *list = isec; | |
721956f4 | 6710 | } |
ad8e1ba5 AM |
6711 | |
6712 | /* If a code section has a function that uses the TOC then we need | |
6713 | to use the right TOC (obviously). Also, make sure that .opd gets | |
ee87f2da AM |
6714 | the correct TOC value for R_PPC64_TOC relocs that don't have or |
6715 | can't find their function symbol (shouldn't ever happen now). */ | |
ad8e1ba5 | 6716 | if (isec->has_gp_reloc || (isec->flags & SEC_CODE) == 0) |
9b5ecbd0 AM |
6717 | { |
6718 | if (elf_gp (isec->owner) != 0) | |
6719 | htab->toc_curr = elf_gp (isec->owner); | |
6720 | } | |
6721 | else if ((ret = toc_adjusting_stub_needed (info, isec)) < 0) | |
6722 | return FALSE; | |
6723 | else | |
6724 | isec->has_gp_reloc = ret; | |
ad8e1ba5 AM |
6725 | |
6726 | /* Functions that don't use the TOC can belong in any TOC group. | |
6727 | Use the last TOC base. This happens to make _init and _fini | |
6728 | pasting work. */ | |
6729 | htab->stub_group[isec->id].toc_off = htab->toc_curr; | |
9b5ecbd0 | 6730 | return TRUE; |
721956f4 AM |
6731 | } |
6732 | ||
6733 | /* See whether we can group stub sections together. Grouping stub | |
6734 | sections may result in fewer stubs. More importantly, we need to | |
6735 | put all .init* and .fini* stubs at the beginning of the .init or | |
6736 | .fini output sections respectively, because glibc splits the | |
6737 | _init and _fini functions into multiple parts. Putting a stub in | |
6738 | the middle of a function is not a good idea. */ | |
6739 | ||
6740 | static void | |
4ce794b7 AM |
6741 | group_sections (struct ppc_link_hash_table *htab, |
6742 | bfd_size_type stub_group_size, | |
6743 | bfd_boolean stubs_always_before_branch) | |
721956f4 | 6744 | { |
734b6cf9 AM |
6745 | asection **list = htab->input_list + htab->top_index; |
6746 | do | |
721956f4 | 6747 | { |
734b6cf9 AM |
6748 | asection *tail = *list; |
6749 | while (tail != NULL) | |
721956f4 | 6750 | { |
734b6cf9 AM |
6751 | asection *curr; |
6752 | asection *prev; | |
6753 | bfd_size_type total; | |
6754 | bfd_boolean big_sec; | |
6755 | bfd_vma curr_toc; | |
6756 | ||
6757 | curr = tail; | |
6758 | if (tail->_cooked_size) | |
6759 | total = tail->_cooked_size; | |
6760 | else | |
6761 | total = tail->_raw_size; | |
6762 | big_sec = total >= stub_group_size; | |
6763 | curr_toc = htab->stub_group[tail->id].toc_off; | |
6764 | ||
6765 | while ((prev = PREV_SEC (curr)) != NULL | |
6766 | && ((total += curr->output_offset - prev->output_offset) | |
ad8e1ba5 AM |
6767 | < stub_group_size) |
6768 | && htab->stub_group[prev->id].toc_off == curr_toc) | |
734b6cf9 AM |
6769 | curr = prev; |
6770 | ||
6771 | /* OK, the size from the start of CURR to the end is less | |
6772 | than stub_group_size and thus can be handled by one stub | |
6773 | section. (or the tail section is itself larger than | |
6774 | stub_group_size, in which case we may be toast.) We | |
6775 | should really be keeping track of the total size of stubs | |
6776 | added here, as stubs contribute to the final output | |
6777 | section size. That's a little tricky, and this way will | |
6778 | only break if stubs added make the total size more than | |
6779 | 2^25, ie. for the default stub_group_size, if stubs total | |
6780 | more than 2097152 bytes, or nearly 75000 plt call stubs. */ | |
6781 | do | |
721956f4 AM |
6782 | { |
6783 | prev = PREV_SEC (tail); | |
734b6cf9 | 6784 | /* Set up this stub group. */ |
721956f4 AM |
6785 | htab->stub_group[tail->id].link_sec = curr; |
6786 | } | |
734b6cf9 AM |
6787 | while (tail != curr && (tail = prev) != NULL); |
6788 | ||
6789 | /* But wait, there's more! Input sections up to stub_group_size | |
6790 | bytes before the stub section can be handled by it too. | |
6791 | Don't do this if we have a really large section after the | |
6792 | stubs, as adding more stubs increases the chance that | |
6793 | branches may not reach into the stub section. */ | |
6794 | if (!stubs_always_before_branch && !big_sec) | |
6795 | { | |
6796 | total = 0; | |
6797 | while (prev != NULL | |
6798 | && ((total += tail->output_offset - prev->output_offset) | |
6799 | < stub_group_size) | |
6800 | && htab->stub_group[prev->id].toc_off == curr_toc) | |
6801 | { | |
6802 | tail = prev; | |
6803 | prev = PREV_SEC (tail); | |
6804 | htab->stub_group[tail->id].link_sec = curr; | |
6805 | } | |
6806 | } | |
6807 | tail = prev; | |
721956f4 AM |
6808 | } |
6809 | } | |
734b6cf9 AM |
6810 | while (list-- != htab->input_list); |
6811 | free (htab->input_list); | |
721956f4 AM |
6812 | #undef PREV_SEC |
6813 | } | |
6814 | ||
721956f4 AM |
6815 | /* Determine and set the size of the stub section for a final link. |
6816 | ||
6817 | The basic idea here is to examine all the relocations looking for | |
6818 | PC-relative calls to a target that is unreachable with a "bl" | |
6819 | instruction. */ | |
6820 | ||
b34976b6 | 6821 | bfd_boolean |
4ce794b7 | 6822 | ppc64_elf_size_stubs (bfd *output_bfd, |
4ce794b7 AM |
6823 | struct bfd_link_info *info, |
6824 | bfd_signed_vma group_size, | |
6825 | asection *(*add_stub_section) (const char *, asection *), | |
6826 | void (*layout_sections_again) (void)) | |
721956f4 AM |
6827 | { |
6828 | bfd_size_type stub_group_size; | |
b34976b6 | 6829 | bfd_boolean stubs_always_before_branch; |
721956f4 AM |
6830 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
6831 | ||
6832 | /* Stash our params away. */ | |
721956f4 AM |
6833 | htab->add_stub_section = add_stub_section; |
6834 | htab->layout_sections_again = layout_sections_again; | |
6835 | stubs_always_before_branch = group_size < 0; | |
6836 | if (group_size < 0) | |
6837 | stub_group_size = -group_size; | |
6838 | else | |
6839 | stub_group_size = group_size; | |
6840 | if (stub_group_size == 1) | |
6841 | { | |
6842 | /* Default values. */ | |
58ac9f71 AM |
6843 | if (stubs_always_before_branch) |
6844 | { | |
6845 | stub_group_size = 0x1e00000; | |
6846 | if (htab->has_14bit_branch) | |
6847 | stub_group_size = 0x7800; | |
6848 | } | |
6849 | else | |
6850 | { | |
6851 | stub_group_size = 0x1c00000; | |
6852 | if (htab->has_14bit_branch) | |
6853 | stub_group_size = 0x7000; | |
6854 | } | |
721956f4 AM |
6855 | } |
6856 | ||
6857 | group_sections (htab, stub_group_size, stubs_always_before_branch); | |
6858 | ||
721956f4 AM |
6859 | while (1) |
6860 | { | |
6861 | bfd *input_bfd; | |
6862 | unsigned int bfd_indx; | |
6863 | asection *stub_sec; | |
b34976b6 | 6864 | bfd_boolean stub_changed; |
721956f4 AM |
6865 | |
6866 | htab->stub_iteration += 1; | |
b34976b6 | 6867 | stub_changed = FALSE; |
721956f4 AM |
6868 | |
6869 | for (input_bfd = info->input_bfds, bfd_indx = 0; | |
6870 | input_bfd != NULL; | |
6871 | input_bfd = input_bfd->link_next, bfd_indx++) | |
6872 | { | |
6873 | Elf_Internal_Shdr *symtab_hdr; | |
6874 | asection *section; | |
6cdc0ccc | 6875 | Elf_Internal_Sym *local_syms = NULL; |
721956f4 AM |
6876 | |
6877 | /* We'll need the symbol table in a second. */ | |
6878 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
6879 | if (symtab_hdr->sh_info == 0) | |
6880 | continue; | |
6881 | ||
721956f4 AM |
6882 | /* Walk over each section attached to the input bfd. */ |
6883 | for (section = input_bfd->sections; | |
6884 | section != NULL; | |
6885 | section = section->next) | |
6886 | { | |
721956f4 | 6887 | Elf_Internal_Rela *internal_relocs, *irelaend, *irela; |
721956f4 AM |
6888 | |
6889 | /* If there aren't any relocs, then there's nothing more | |
6890 | to do. */ | |
6891 | if ((section->flags & SEC_RELOC) == 0 | |
6892 | || section->reloc_count == 0) | |
6893 | continue; | |
6894 | ||
6895 | /* If this section is a link-once section that will be | |
6896 | discarded, then don't create any stubs. */ | |
6897 | if (section->output_section == NULL | |
6898 | || section->output_section->owner != output_bfd) | |
6899 | continue; | |
6900 | ||
1e2f5b6e AM |
6901 | /* Get the relocs. */ |
6902 | internal_relocs | |
4ce794b7 | 6903 | = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL, |
45d6a902 | 6904 | info->keep_memory); |
721956f4 | 6905 | if (internal_relocs == NULL) |
1e2f5b6e | 6906 | goto error_ret_free_local; |
721956f4 AM |
6907 | |
6908 | /* Now examine each relocation. */ | |
6909 | irela = internal_relocs; | |
6910 | irelaend = irela + section->reloc_count; | |
6911 | for (; irela < irelaend; irela++) | |
6912 | { | |
4ce794b7 AM |
6913 | enum elf_ppc64_reloc_type r_type; |
6914 | unsigned int r_indx; | |
721956f4 AM |
6915 | enum ppc_stub_type stub_type; |
6916 | struct ppc_stub_hash_entry *stub_entry; | |
6917 | asection *sym_sec; | |
6918 | bfd_vma sym_value; | |
6919 | bfd_vma destination; | |
6920 | struct ppc_link_hash_entry *hash; | |
411e1bfb AM |
6921 | struct elf_link_hash_entry *h; |
6922 | Elf_Internal_Sym *sym; | |
721956f4 AM |
6923 | char *stub_name; |
6924 | const asection *id_sec; | |
6925 | ||
6926 | r_type = ELF64_R_TYPE (irela->r_info); | |
6927 | r_indx = ELF64_R_SYM (irela->r_info); | |
6928 | ||
4ce794b7 | 6929 | if (r_type >= R_PPC64_max) |
721956f4 AM |
6930 | { |
6931 | bfd_set_error (bfd_error_bad_value); | |
6cdc0ccc | 6932 | goto error_ret_free_internal; |
721956f4 AM |
6933 | } |
6934 | ||
6935 | /* Only look for stubs on branch instructions. */ | |
4ce794b7 AM |
6936 | if (r_type != R_PPC64_REL24 |
6937 | && r_type != R_PPC64_REL14 | |
6938 | && r_type != R_PPC64_REL14_BRTAKEN | |
6939 | && r_type != R_PPC64_REL14_BRNTAKEN) | |
721956f4 AM |
6940 | continue; |
6941 | ||
6942 | /* Now determine the call target, its name, value, | |
6943 | section. */ | |
721956f4 | 6944 | destination = 0; |
411e1bfb AM |
6945 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, |
6946 | r_indx, input_bfd)) | |
6947 | goto error_ret_free_internal; | |
6948 | hash = (struct ppc_link_hash_entry *) h; | |
6949 | ||
6950 | if (hash == NULL) | |
721956f4 AM |
6951 | { |
6952 | /* It's a local symbol. */ | |
411e1bfb | 6953 | sym_value = sym->st_value; |
721956f4 AM |
6954 | destination = (sym_value + irela->r_addend |
6955 | + sym_sec->output_offset | |
6956 | + sym_sec->output_section->vma); | |
6957 | } | |
6958 | else | |
6959 | { | |
6960 | /* It's an external symbol. */ | |
411e1bfb | 6961 | sym_value = 0; |
721956f4 AM |
6962 | if (hash->elf.root.type == bfd_link_hash_defined |
6963 | || hash->elf.root.type == bfd_link_hash_defweak) | |
6964 | { | |
721956f4 AM |
6965 | sym_value = hash->elf.root.u.def.value; |
6966 | if (sym_sec->output_section != NULL) | |
6967 | destination = (sym_value + irela->r_addend | |
6968 | + sym_sec->output_offset | |
6969 | + sym_sec->output_section->vma); | |
6970 | } | |
6971 | else if (hash->elf.root.type == bfd_link_hash_undefweak) | |
6972 | ; | |
6973 | else if (hash->elf.root.type == bfd_link_hash_undefined) | |
6974 | ; | |
6975 | else | |
6976 | { | |
6977 | bfd_set_error (bfd_error_bad_value); | |
6978 | goto error_ret_free_internal; | |
6979 | } | |
6980 | } | |
6981 | ||
6982 | /* Determine what (if any) linker stub is needed. */ | |
6983 | stub_type = ppc_type_of_stub (section, irela, &hash, | |
6984 | destination); | |
ad8e1ba5 AM |
6985 | |
6986 | if (stub_type != ppc_stub_plt_call) | |
6987 | { | |
6988 | /* Check whether we need a TOC adjusting stub. | |
6989 | Since the linker pastes together pieces from | |
6990 | different object files when creating the | |
6991 | _init and _fini functions, it may be that a | |
6992 | call to what looks like a local sym is in | |
6993 | fact a call needing a TOC adjustment. */ | |
6994 | if (sym_sec != NULL | |
6995 | && sym_sec->output_section != NULL | |
6996 | && (htab->stub_group[sym_sec->id].toc_off | |
9b5ecbd0 AM |
6997 | != htab->stub_group[section->id].toc_off) |
6998 | && sym_sec->has_gp_reloc | |
6999 | && section->has_gp_reloc) | |
ad8e1ba5 AM |
7000 | stub_type = ppc_stub_long_branch_r2off; |
7001 | } | |
7002 | ||
721956f4 AM |
7003 | if (stub_type == ppc_stub_none) |
7004 | continue; | |
7005 | ||
411e1bfb AM |
7006 | /* __tls_get_addr calls might be eliminated. */ |
7007 | if (stub_type != ppc_stub_plt_call | |
7008 | && hash != NULL | |
7009 | && &hash->elf == htab->tls_get_addr | |
7010 | && section->has_tls_reloc | |
7011 | && irela != internal_relocs) | |
7012 | { | |
7013 | /* Get tls info. */ | |
e7b938ca | 7014 | char *tls_mask; |
411e1bfb | 7015 | |
0d4792f7 | 7016 | if (!get_tls_mask (&tls_mask, NULL, &local_syms, |
411e1bfb AM |
7017 | irela - 1, input_bfd)) |
7018 | goto error_ret_free_internal; | |
e7b938ca | 7019 | if (*tls_mask != 0) |
411e1bfb AM |
7020 | continue; |
7021 | } | |
7022 | ||
721956f4 AM |
7023 | /* Support for grouping stub sections. */ |
7024 | id_sec = htab->stub_group[section->id].link_sec; | |
7025 | ||
7026 | /* Get the name of this stub. */ | |
7027 | stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela); | |
7028 | if (!stub_name) | |
7029 | goto error_ret_free_internal; | |
7030 | ||
7031 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, | |
b34976b6 | 7032 | stub_name, FALSE, FALSE); |
721956f4 AM |
7033 | if (stub_entry != NULL) |
7034 | { | |
7035 | /* The proper stub has already been created. */ | |
7036 | free (stub_name); | |
7037 | continue; | |
7038 | } | |
7039 | ||
7040 | stub_entry = ppc_add_stub (stub_name, section, htab); | |
7041 | if (stub_entry == NULL) | |
7042 | { | |
7043 | free (stub_name); | |
6cdc0ccc AM |
7044 | error_ret_free_internal: |
7045 | if (elf_section_data (section)->relocs == NULL) | |
7046 | free (internal_relocs); | |
7047 | error_ret_free_local: | |
7048 | if (local_syms != NULL | |
7049 | && (symtab_hdr->contents | |
7050 | != (unsigned char *) local_syms)) | |
7051 | free (local_syms); | |
b34976b6 | 7052 | return FALSE; |
721956f4 AM |
7053 | } |
7054 | ||
ad8e1ba5 | 7055 | stub_entry->stub_type = stub_type; |
721956f4 AM |
7056 | stub_entry->target_value = sym_value; |
7057 | stub_entry->target_section = sym_sec; | |
721956f4 | 7058 | stub_entry->h = hash; |
411e1bfb | 7059 | stub_entry->addend = irela->r_addend; |
b34976b6 | 7060 | stub_changed = TRUE; |
721956f4 AM |
7061 | } |
7062 | ||
7063 | /* We're done with the internal relocs, free them. */ | |
6cdc0ccc | 7064 | if (elf_section_data (section)->relocs != internal_relocs) |
1e2f5b6e | 7065 | free (internal_relocs); |
721956f4 | 7066 | } |
6cdc0ccc AM |
7067 | |
7068 | if (local_syms != NULL | |
7069 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
7070 | { | |
7071 | if (!info->keep_memory) | |
7072 | free (local_syms); | |
7073 | else | |
7074 | symtab_hdr->contents = (unsigned char *) local_syms; | |
7075 | } | |
721956f4 AM |
7076 | } |
7077 | ||
7078 | if (!stub_changed) | |
7079 | break; | |
7080 | ||
7081 | /* OK, we've added some stubs. Find out the new size of the | |
7082 | stub sections. */ | |
7083 | for (stub_sec = htab->stub_bfd->sections; | |
7084 | stub_sec != NULL; | |
7085 | stub_sec = stub_sec->next) | |
e717da7e AM |
7086 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) |
7087 | { | |
7088 | stub_sec->_raw_size = 0; | |
7089 | stub_sec->_cooked_size = 0; | |
7090 | } | |
4ce794b7 AM |
7091 | htab->brlt->_raw_size = 0; |
7092 | htab->brlt->_cooked_size = 0; | |
63bc6f6c AM |
7093 | if (info->shared) |
7094 | { | |
7095 | htab->relbrlt->_raw_size = 0; | |
7096 | htab->relbrlt->_cooked_size = 0; | |
7097 | } | |
721956f4 | 7098 | |
63bc6f6c | 7099 | bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, info); |
721956f4 AM |
7100 | |
7101 | /* Ask the linker to do its stuff. */ | |
7102 | (*htab->layout_sections_again) (); | |
7103 | } | |
7104 | ||
afbe61cf AM |
7105 | /* It would be nice to strip .branch_lt from the output if the |
7106 | section is empty, but it's too late. If we strip sections here, | |
7107 | the dynamic symbol table is corrupted since the section symbol | |
7108 | for the stripped section isn't written. */ | |
721956f4 | 7109 | |
b34976b6 | 7110 | return TRUE; |
721956f4 AM |
7111 | } |
7112 | ||
7113 | /* Called after we have determined section placement. If sections | |
805fc799 | 7114 | move, we'll be called again. Provide a value for TOCstart. */ |
721956f4 | 7115 | |
805fc799 | 7116 | bfd_vma |
4ce794b7 | 7117 | ppc64_elf_toc (bfd *obfd) |
721956f4 | 7118 | { |
805fc799 AM |
7119 | asection *s; |
7120 | bfd_vma TOCstart; | |
721956f4 | 7121 | |
805fc799 AM |
7122 | /* The TOC consists of sections .got, .toc, .tocbss, .plt in that |
7123 | order. The TOC starts where the first of these sections starts. */ | |
7124 | s = bfd_get_section_by_name (obfd, ".got"); | |
7125 | if (s == NULL) | |
7126 | s = bfd_get_section_by_name (obfd, ".toc"); | |
7127 | if (s == NULL) | |
7128 | s = bfd_get_section_by_name (obfd, ".tocbss"); | |
7129 | if (s == NULL) | |
7130 | s = bfd_get_section_by_name (obfd, ".plt"); | |
7131 | if (s == NULL) | |
7132 | { | |
7133 | /* This may happen for | |
7134 | o references to TOC base (SYM@toc / TOC[tc0]) without a | |
7135 | .toc directive | |
7136 | o bad linker script | |
7137 | o --gc-sections and empty TOC sections | |
7138 | ||
7139 | FIXME: Warn user? */ | |
7140 | ||
7141 | /* Look for a likely section. We probably won't even be | |
7142 | using TOCstart. */ | |
7143 | for (s = obfd->sections; s != NULL; s = s->next) | |
7144 | if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY)) | |
7145 | == (SEC_ALLOC | SEC_SMALL_DATA)) | |
7146 | break; | |
721956f4 | 7147 | if (s == NULL) |
805fc799 AM |
7148 | for (s = obfd->sections; s != NULL; s = s->next) |
7149 | if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA)) | |
7150 | == (SEC_ALLOC | SEC_SMALL_DATA)) | |
7151 | break; | |
721956f4 | 7152 | if (s == NULL) |
805fc799 AM |
7153 | for (s = obfd->sections; s != NULL; s = s->next) |
7154 | if ((s->flags & (SEC_ALLOC | SEC_READONLY)) == SEC_ALLOC) | |
7155 | break; | |
721956f4 | 7156 | if (s == NULL) |
805fc799 AM |
7157 | for (s = obfd->sections; s != NULL; s = s->next) |
7158 | if ((s->flags & SEC_ALLOC) == SEC_ALLOC) | |
7159 | break; | |
7160 | } | |
721956f4 | 7161 | |
805fc799 AM |
7162 | TOCstart = 0; |
7163 | if (s != NULL) | |
7164 | TOCstart = s->output_section->vma + s->output_offset; | |
721956f4 | 7165 | |
805fc799 | 7166 | return TOCstart; |
721956f4 AM |
7167 | } |
7168 | ||
7169 | /* Build all the stubs associated with the current output file. | |
7170 | The stubs are kept in a hash table attached to the main linker | |
7171 | hash table. This function is called via gldelf64ppc_finish. */ | |
7172 | ||
b34976b6 | 7173 | bfd_boolean |
4ce794b7 AM |
7174 | ppc64_elf_build_stubs (bfd_boolean emit_stub_syms, |
7175 | struct bfd_link_info *info, | |
7176 | char **stats) | |
5d1634d7 AM |
7177 | { |
7178 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
721956f4 | 7179 | asection *stub_sec; |
5d1634d7 | 7180 | bfd_byte *p; |
e717da7e | 7181 | int stub_sec_count = 0; |
5d1634d7 | 7182 | |
ad8e1ba5 | 7183 | htab->emit_stub_syms = emit_stub_syms; |
721956f4 AM |
7184 | for (stub_sec = htab->stub_bfd->sections; |
7185 | stub_sec != NULL; | |
7186 | stub_sec = stub_sec->next) | |
e717da7e AM |
7187 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) |
7188 | { | |
7189 | bfd_size_type size; | |
721956f4 | 7190 | |
e717da7e AM |
7191 | /* Allocate memory to hold the linker stubs. */ |
7192 | size = stub_sec->_raw_size; | |
7193 | if (size != 0) | |
7194 | { | |
7195 | stub_sec->contents = bfd_zalloc (htab->stub_bfd, size); | |
7196 | if (stub_sec->contents == NULL) | |
7197 | return FALSE; | |
7198 | } | |
7199 | stub_sec->_cooked_size = 0; | |
7200 | } | |
5d1634d7 | 7201 | |
4ce794b7 | 7202 | if (htab->plt != NULL) |
5d1634d7 | 7203 | { |
9f951329 | 7204 | unsigned int indx; |
ad8e1ba5 | 7205 | bfd_vma plt0; |
9f951329 | 7206 | |
721956f4 | 7207 | /* Build the .glink plt call stub. */ |
4ce794b7 AM |
7208 | plt0 = (htab->plt->output_section->vma |
7209 | + htab->plt->output_offset | |
7210 | - (htab->glink->output_section->vma | |
7211 | + htab->glink->output_offset | |
ad8e1ba5 AM |
7212 | + GLINK_CALL_STUB_SIZE)); |
7213 | if (plt0 + 0x80008000 > 0xffffffff) | |
721956f4 | 7214 | { |
ad8e1ba5 AM |
7215 | (*_bfd_error_handler) (_(".glink and .plt too far apart")); |
7216 | bfd_set_error (bfd_error_bad_value); | |
7217 | return FALSE; | |
721956f4 | 7218 | } |
721956f4 | 7219 | |
97b639ba AM |
7220 | if (htab->emit_stub_syms) |
7221 | { | |
7222 | struct elf_link_hash_entry *h; | |
7223 | h = elf_link_hash_lookup (&htab->elf, "__glink", TRUE, FALSE, FALSE); | |
7224 | if (h == NULL) | |
7225 | return FALSE; | |
7226 | if (h->root.type == bfd_link_hash_new) | |
7227 | { | |
7228 | h->root.type = bfd_link_hash_defined; | |
7229 | h->root.u.def.section = htab->glink; | |
7230 | h->root.u.def.value = 0; | |
7231 | h->elf_link_hash_flags = (ELF_LINK_HASH_REF_REGULAR | |
7232 | | ELF_LINK_HASH_DEF_REGULAR | |
7233 | | ELF_LINK_HASH_REF_REGULAR_NONWEAK | |
7234 | | ELF_LINK_FORCED_LOCAL); | |
7235 | } | |
7236 | } | |
4ce794b7 AM |
7237 | p = htab->glink->contents; |
7238 | bfd_put_32 (htab->glink->owner, MFCTR_R12, p); | |
ad8e1ba5 | 7239 | p += 4; |
4ce794b7 | 7240 | bfd_put_32 (htab->glink->owner, SLDI_R11_R0_3, p); |
ad8e1ba5 | 7241 | p += 4; |
4ce794b7 | 7242 | bfd_put_32 (htab->glink->owner, ADDIC_R2_R0_32K, p); |
ad8e1ba5 | 7243 | p += 4; |
4ce794b7 | 7244 | bfd_put_32 (htab->glink->owner, SUB_R12_R12_R11, p); |
ad8e1ba5 | 7245 | p += 4; |
4ce794b7 | 7246 | bfd_put_32 (htab->glink->owner, SRADI_R2_R2_63, p); |
ad8e1ba5 | 7247 | p += 4; |
4ce794b7 | 7248 | bfd_put_32 (htab->glink->owner, SLDI_R11_R0_2, p); |
ad8e1ba5 | 7249 | p += 4; |
4ce794b7 | 7250 | bfd_put_32 (htab->glink->owner, AND_R2_R2_R11, p); |
ad8e1ba5 | 7251 | p += 4; |
4ce794b7 | 7252 | bfd_put_32 (htab->glink->owner, SUB_R12_R12_R11, p); |
ad8e1ba5 | 7253 | p += 4; |
4ce794b7 | 7254 | bfd_put_32 (htab->glink->owner, ADD_R12_R12_R2, p); |
ad8e1ba5 | 7255 | p += 4; |
4ce794b7 | 7256 | bfd_put_32 (htab->glink->owner, ADDIS_R12_R12 | PPC_HA (plt0), p); |
ad8e1ba5 | 7257 | p += 4; |
4ce794b7 | 7258 | bfd_put_32 (htab->glink->owner, LD_R11_0R12 | PPC_LO (plt0), p); |
ad8e1ba5 | 7259 | p += 4; |
4ce794b7 | 7260 | bfd_put_32 (htab->glink->owner, ADDI_R12_R12 | PPC_LO (plt0), p); |
ad8e1ba5 | 7261 | p += 4; |
4ce794b7 | 7262 | bfd_put_32 (htab->glink->owner, LD_R2_0R12 | 8, p); |
ad8e1ba5 | 7263 | p += 4; |
4ce794b7 | 7264 | bfd_put_32 (htab->glink->owner, MTCTR_R11, p); |
ad8e1ba5 | 7265 | p += 4; |
4ce794b7 | 7266 | bfd_put_32 (htab->glink->owner, LD_R11_0R12 | 16, p); |
ad8e1ba5 | 7267 | p += 4; |
4ce794b7 | 7268 | bfd_put_32 (htab->glink->owner, BCTR, p); |
ad8e1ba5 AM |
7269 | p += 4; |
7270 | ||
9f951329 AM |
7271 | /* Build the .glink lazy link call stubs. */ |
7272 | indx = 0; | |
4ce794b7 | 7273 | while (p < htab->glink->contents + htab->glink->_raw_size) |
9f951329 AM |
7274 | { |
7275 | if (indx < 0x8000) | |
7276 | { | |
4ce794b7 | 7277 | bfd_put_32 (htab->glink->owner, LI_R0_0 | indx, p); |
9f951329 AM |
7278 | p += 4; |
7279 | } | |
7280 | else | |
7281 | { | |
4ce794b7 | 7282 | bfd_put_32 (htab->glink->owner, LIS_R0_0 | PPC_HI (indx), p); |
9f951329 | 7283 | p += 4; |
4ce794b7 | 7284 | bfd_put_32 (htab->glink->owner, ORI_R0_R0_0 | PPC_LO (indx), p); |
9f951329 AM |
7285 | p += 4; |
7286 | } | |
4ce794b7 AM |
7287 | bfd_put_32 (htab->glink->owner, |
7288 | B_DOT | ((htab->glink->contents - p) & 0x3fffffc), p); | |
a16d5acb | 7289 | indx++; |
9f951329 AM |
7290 | p += 4; |
7291 | } | |
4ce794b7 | 7292 | htab->glink->_cooked_size = p - htab->glink->contents; |
5d1634d7 | 7293 | } |
5d1634d7 | 7294 | |
4ce794b7 | 7295 | if (htab->brlt->_raw_size != 0) |
721956f4 | 7296 | { |
4ce794b7 AM |
7297 | htab->brlt->contents = bfd_zalloc (htab->brlt->owner, |
7298 | htab->brlt->_raw_size); | |
7299 | if (htab->brlt->contents == NULL) | |
b34976b6 | 7300 | return FALSE; |
721956f4 | 7301 | } |
63bc6f6c AM |
7302 | if (info->shared && htab->relbrlt->_raw_size != 0) |
7303 | { | |
7304 | htab->relbrlt->contents = bfd_zalloc (htab->relbrlt->owner, | |
7305 | htab->relbrlt->_raw_size); | |
7306 | if (htab->relbrlt->contents == NULL) | |
7307 | return FALSE; | |
7308 | } | |
5d1634d7 | 7309 | |
721956f4 AM |
7310 | /* Build the stubs as directed by the stub hash table. */ |
7311 | bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info); | |
5d1634d7 | 7312 | |
721956f4 AM |
7313 | for (stub_sec = htab->stub_bfd->sections; |
7314 | stub_sec != NULL; | |
7315 | stub_sec = stub_sec->next) | |
e717da7e AM |
7316 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) |
7317 | { | |
7318 | stub_sec_count += 1; | |
7319 | if (stub_sec->_raw_size != stub_sec->_cooked_size) | |
7320 | break; | |
7321 | } | |
5d1634d7 | 7322 | |
721956f4 | 7323 | if (stub_sec != NULL |
4ce794b7 | 7324 | || htab->glink->_raw_size != htab->glink->_cooked_size) |
5d1634d7 | 7325 | { |
b34976b6 | 7326 | htab->stub_error = TRUE; |
721956f4 | 7327 | (*_bfd_error_handler) (_("stubs don't match calculated size")); |
5d1634d7 | 7328 | } |
721956f4 | 7329 | |
d2a300cf AM |
7330 | if (htab->stub_error) |
7331 | return FALSE; | |
7332 | ||
7333 | if (stats != NULL) | |
7334 | { | |
7335 | *stats = bfd_malloc (500); | |
7336 | if (*stats == NULL) | |
7337 | return FALSE; | |
7338 | ||
7339 | sprintf (*stats, _("linker stubs in %u groups\n" | |
7340 | " branch %lu\n" | |
7341 | " toc adjust %lu\n" | |
7342 | " long branch %lu\n" | |
7343 | " long toc adj %lu\n" | |
7344 | " plt call %lu"), | |
e717da7e | 7345 | stub_sec_count, |
4ce794b7 AM |
7346 | htab->stub_count[ppc_stub_long_branch - 1], |
7347 | htab->stub_count[ppc_stub_long_branch_r2off - 1], | |
7348 | htab->stub_count[ppc_stub_plt_branch - 1], | |
7349 | htab->stub_count[ppc_stub_plt_branch_r2off - 1], | |
7350 | htab->stub_count[ppc_stub_plt_call - 1]); | |
d2a300cf AM |
7351 | } |
7352 | return TRUE; | |
5bd4f169 AM |
7353 | } |
7354 | ||
5bd4f169 AM |
7355 | /* The RELOCATE_SECTION function is called by the ELF backend linker |
7356 | to handle the relocations for a section. | |
7357 | ||
7358 | The relocs are always passed as Rela structures; if the section | |
7359 | actually uses Rel structures, the r_addend field will always be | |
7360 | zero. | |
7361 | ||
7362 | This function is responsible for adjust the section contents as | |
7363 | necessary, and (if using Rela relocs and generating a | |
1049f94e | 7364 | relocatable output file) adjusting the reloc addend as |
5bd4f169 AM |
7365 | necessary. |
7366 | ||
7367 | This function does not have to worry about setting the reloc | |
7368 | address or the reloc symbol index. | |
7369 | ||
7370 | LOCAL_SYMS is a pointer to the swapped in local symbols. | |
7371 | ||
7372 | LOCAL_SECTIONS is an array giving the section in the input file | |
7373 | corresponding to the st_shndx field of each local symbol. | |
7374 | ||
7375 | The global hash table entry for the global symbols can be found | |
7376 | via elf_sym_hashes (input_bfd). | |
7377 | ||
1049f94e | 7378 | When generating relocatable output, this function must handle |
5bd4f169 AM |
7379 | STB_LOCAL/STT_SECTION symbols specially. The output symbol is |
7380 | going to be the section symbol corresponding to the output | |
7381 | section, which means that the addend must be adjusted | |
7382 | accordingly. */ | |
7383 | ||
b34976b6 | 7384 | static bfd_boolean |
4ce794b7 AM |
7385 | ppc64_elf_relocate_section (bfd *output_bfd, |
7386 | struct bfd_link_info *info, | |
7387 | bfd *input_bfd, | |
7388 | asection *input_section, | |
7389 | bfd_byte *contents, | |
7390 | Elf_Internal_Rela *relocs, | |
7391 | Elf_Internal_Sym *local_syms, | |
7392 | asection **local_sections) | |
5bd4f169 | 7393 | { |
65f38f15 | 7394 | struct ppc_link_hash_table *htab; |
5bd4f169 AM |
7395 | Elf_Internal_Shdr *symtab_hdr; |
7396 | struct elf_link_hash_entry **sym_hashes; | |
5bd4f169 AM |
7397 | Elf_Internal_Rela *rel; |
7398 | Elf_Internal_Rela *relend; | |
411e1bfb AM |
7399 | Elf_Internal_Rela outrel; |
7400 | bfd_byte *loc; | |
411e1bfb | 7401 | struct got_entry **local_got_ents; |
5bd4f169 | 7402 | bfd_vma TOCstart; |
b34976b6 AM |
7403 | bfd_boolean ret = TRUE; |
7404 | bfd_boolean is_opd; | |
96e0dda4 | 7405 | /* Disabled until we sort out how ld should choose 'y' vs 'at'. */ |
b34976b6 | 7406 | bfd_boolean is_power4 = FALSE; |
5bd4f169 | 7407 | |
1049f94e | 7408 | if (info->relocatable) |
b34976b6 | 7409 | return TRUE; |
b491616a | 7410 | |
65f38f15 | 7411 | /* Initialize howto table if needed. */ |
5bd4f169 | 7412 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) |
5bd4f169 AM |
7413 | ppc_howto_init (); |
7414 | ||
65f38f15 | 7415 | htab = ppc_hash_table (info); |
411e1bfb | 7416 | local_got_ents = elf_local_got_ents (input_bfd); |
5bd4f169 | 7417 | TOCstart = elf_gp (output_bfd); |
5bd4f169 AM |
7418 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; |
7419 | sym_hashes = elf_sym_hashes (input_bfd); | |
f0abc2a1 | 7420 | is_opd = ppc64_elf_section_data (input_section)->opd.adjust != NULL; |
65f38f15 | 7421 | |
5bd4f169 AM |
7422 | rel = relocs; |
7423 | relend = relocs + input_section->reloc_count; | |
7424 | for (; rel < relend; rel++) | |
7425 | { | |
04c9666a | 7426 | enum elf_ppc64_reloc_type r_type; |
5bd4f169 AM |
7427 | bfd_vma addend; |
7428 | bfd_reloc_status_type r; | |
7429 | Elf_Internal_Sym *sym; | |
7430 | asection *sec; | |
7431 | struct elf_link_hash_entry *h; | |
721956f4 | 7432 | struct elf_link_hash_entry *fdh; |
5bd4f169 | 7433 | const char *sym_name; |
0d4792f7 | 7434 | unsigned long r_symndx, toc_symndx; |
951fd09b | 7435 | char tls_mask, tls_gd, tls_type; |
0d4792f7 | 7436 | char sym_type; |
5bd4f169 | 7437 | bfd_vma relocation; |
b34976b6 AM |
7438 | bfd_boolean unresolved_reloc; |
7439 | bfd_boolean warned; | |
50bc7936 | 7440 | unsigned long insn, mask; |
721956f4 AM |
7441 | struct ppc_stub_hash_entry *stub_entry; |
7442 | bfd_vma max_br_offset; | |
7443 | bfd_vma from; | |
5bd4f169 | 7444 | |
4ce794b7 | 7445 | r_type = ELF64_R_TYPE (rel->r_info); |
5bd4f169 | 7446 | r_symndx = ELF64_R_SYM (rel->r_info); |
ee87f2da AM |
7447 | |
7448 | /* For old style R_PPC64_TOC relocs with a zero symbol, use the | |
7449 | symbol of the previous ADDR64 reloc. The symbol gives us the | |
7450 | proper TOC base to use. */ | |
7451 | if (rel->r_info == ELF64_R_INFO (0, R_PPC64_TOC) | |
7452 | && rel != relocs | |
7453 | && ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_ADDR64 | |
7454 | && is_opd) | |
7455 | r_symndx = ELF64_R_SYM (rel[-1].r_info); | |
7456 | ||
4ce794b7 AM |
7457 | sym = NULL; |
7458 | sec = NULL; | |
7459 | h = NULL; | |
7460 | sym_name = NULL; | |
b34976b6 AM |
7461 | unresolved_reloc = FALSE; |
7462 | warned = FALSE; | |
65f38f15 | 7463 | |
0b13192e | 7464 | if (r_symndx < symtab_hdr->sh_info) |
5bd4f169 AM |
7465 | { |
7466 | /* It's a local symbol. */ | |
7467 | sym = local_syms + r_symndx; | |
7468 | sec = local_sections[r_symndx]; | |
411e1bfb | 7469 | sym_name = bfd_elf_local_sym_name (input_bfd, sym); |
0d4792f7 | 7470 | sym_type = ELF64_ST_TYPE (sym->st_info); |
8517fae7 | 7471 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); |
1e2f5b6e AM |
7472 | if (elf_section_data (sec) != NULL) |
7473 | { | |
7474 | long *opd_sym_adjust; | |
7475 | ||
f0abc2a1 | 7476 | opd_sym_adjust = ppc64_elf_section_data (sec)->opd.adjust; |
754021d0 | 7477 | if (opd_sym_adjust != NULL) |
1e2f5b6e AM |
7478 | relocation += opd_sym_adjust[sym->st_value / 24]; |
7479 | } | |
5bd4f169 AM |
7480 | } |
7481 | else | |
7482 | { | |
560e09e9 NC |
7483 | RELOC_FOR_GLOBAL_SYMBOL (h, sym_hashes, r_symndx, |
7484 | symtab_hdr, relocation, sec, | |
7485 | unresolved_reloc, info, | |
7486 | warned); | |
5bd4f169 | 7487 | sym_name = h->root.root.string; |
0d4792f7 | 7488 | sym_type = h->type; |
5bd4f169 AM |
7489 | } |
7490 | ||
951fd09b AM |
7491 | /* TLS optimizations. Replace instruction sequences and relocs |
7492 | based on information we collected in tls_optimize. We edit | |
7493 | RELOCS so that --emit-relocs will output something sensible | |
7494 | for the final instruction stream. */ | |
7495 | tls_mask = 0; | |
7496 | tls_gd = 0; | |
0d4792f7 | 7497 | toc_symndx = 0; |
d881513a | 7498 | if (IS_PPC64_TLS_RELOC (r_type)) |
411e1bfb AM |
7499 | { |
7500 | if (h != NULL) | |
e7b938ca | 7501 | tls_mask = ((struct ppc_link_hash_entry *) h)->tls_mask; |
411e1bfb AM |
7502 | else if (local_got_ents != NULL) |
7503 | { | |
e7b938ca AM |
7504 | char *lgot_masks; |
7505 | lgot_masks = (char *) (local_got_ents + symtab_hdr->sh_info); | |
7506 | tls_mask = lgot_masks[r_symndx]; | |
411e1bfb | 7507 | } |
0d4792f7 AM |
7508 | if (tls_mask == 0 && r_type == R_PPC64_TLS) |
7509 | { | |
7510 | /* Check for toc tls entries. */ | |
7511 | char *toc_tls; | |
7512 | ||
7513 | if (!get_tls_mask (&toc_tls, &toc_symndx, &local_syms, | |
7514 | rel, input_bfd)) | |
7515 | return FALSE; | |
7516 | ||
7517 | if (toc_tls) | |
7518 | tls_mask = *toc_tls; | |
7519 | } | |
7520 | } | |
7521 | ||
7522 | /* Check that tls relocs are used with tls syms, and non-tls | |
7523 | relocs are used with non-tls syms. */ | |
7524 | if (r_symndx != 0 | |
7525 | && r_type != R_PPC64_NONE | |
7526 | && (h == NULL | |
7527 | || h->root.type == bfd_link_hash_defined | |
7528 | || h->root.type == bfd_link_hash_defweak) | |
7529 | && IS_PPC64_TLS_RELOC (r_type) != (sym_type == STT_TLS)) | |
7530 | { | |
7531 | if (r_type == R_PPC64_TLS && tls_mask != 0) | |
7532 | /* R_PPC64_TLS is OK against a symbol in the TOC. */ | |
7533 | ; | |
7534 | else | |
7535 | (*_bfd_error_handler) | |
7536 | (sym_type == STT_TLS | |
7537 | ? _("%s(%s+0x%lx): %s used with TLS symbol %s") | |
7538 | : _("%s(%s+0x%lx): %s used with non-TLS symbol %s"), | |
7539 | bfd_archive_filename (input_bfd), | |
7540 | input_section->name, | |
7541 | (long) rel->r_offset, | |
7542 | ppc64_elf_howto_table[r_type]->name, | |
7543 | sym_name); | |
411e1bfb AM |
7544 | } |
7545 | ||
7546 | /* Ensure reloc mapping code below stays sane. */ | |
7547 | if (R_PPC64_TOC16_LO_DS != R_PPC64_TOC16_DS + 1 | |
7548 | || R_PPC64_TOC16_LO != R_PPC64_TOC16 + 1 | |
7549 | || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TLSGD16 & 3) | |
7550 | || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TLSGD16_LO & 3) | |
7551 | || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TLSGD16_HI & 3) | |
7552 | || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TLSGD16_HA & 3) | |
7553 | || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TPREL16_DS & 3) | |
7554 | || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TPREL16_LO_DS & 3) | |
7555 | || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TPREL16_HI & 3) | |
7556 | || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TPREL16_HA & 3)) | |
7557 | abort (); | |
0d4792f7 | 7558 | |
411e1bfb AM |
7559 | switch (r_type) |
7560 | { | |
7561 | default: | |
411e1bfb AM |
7562 | break; |
7563 | ||
7564 | case R_PPC64_TOC16: | |
7565 | case R_PPC64_TOC16_LO: | |
7566 | case R_PPC64_TOC16_DS: | |
7567 | case R_PPC64_TOC16_LO_DS: | |
411e1bfb AM |
7568 | { |
7569 | /* Check for toc tls entries. */ | |
7570 | char *toc_tls; | |
951fd09b | 7571 | int retval; |
411e1bfb | 7572 | |
0d4792f7 AM |
7573 | retval = get_tls_mask (&toc_tls, &toc_symndx, &local_syms, |
7574 | rel, input_bfd); | |
951fd09b | 7575 | if (retval == 0) |
411e1bfb AM |
7576 | return FALSE; |
7577 | ||
7578 | if (toc_tls) | |
7579 | { | |
951fd09b | 7580 | tls_mask = *toc_tls; |
411e1bfb AM |
7581 | if (r_type == R_PPC64_TOC16_DS |
7582 | || r_type == R_PPC64_TOC16_LO_DS) | |
81407a69 AM |
7583 | { |
7584 | if (tls_mask != 0 | |
7585 | && (tls_mask & (TLS_DTPREL | TLS_TPREL)) == 0) | |
7586 | goto toctprel; | |
7587 | } | |
411e1bfb | 7588 | else |
951fd09b AM |
7589 | { |
7590 | /* If we found a GD reloc pair, then we might be | |
7591 | doing a GD->IE transition. */ | |
7592 | if (retval == 2) | |
7593 | { | |
7594 | tls_gd = TLS_TPRELGD; | |
7595 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
7596 | goto tls_get_addr_check; | |
7597 | } | |
7598 | else if (retval == 3) | |
7599 | { | |
7600 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) | |
7601 | goto tls_get_addr_check; | |
7602 | } | |
7603 | } | |
411e1bfb AM |
7604 | } |
7605 | } | |
7606 | break; | |
7607 | ||
7608 | case R_PPC64_GOT_TPREL16_DS: | |
7609 | case R_PPC64_GOT_TPREL16_LO_DS: | |
951fd09b AM |
7610 | if (tls_mask != 0 |
7611 | && (tls_mask & TLS_TPREL) == 0) | |
411e1bfb | 7612 | { |
81407a69 | 7613 | toctprel: |
411e1bfb AM |
7614 | insn = bfd_get_32 (output_bfd, contents + rel->r_offset - 2); |
7615 | insn &= 31 << 21; | |
7616 | insn |= 0x3c0d0000; /* addis 0,13,0 */ | |
7617 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset - 2); | |
7618 | r_type = R_PPC64_TPREL16_HA; | |
0d4792f7 AM |
7619 | if (toc_symndx != 0) |
7620 | { | |
7621 | rel->r_info = ELF64_R_INFO (toc_symndx, r_type); | |
7622 | /* We changed the symbol. Start over in order to | |
7623 | get h, sym, sec etc. right. */ | |
7624 | rel--; | |
7625 | continue; | |
7626 | } | |
7627 | else | |
7628 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
411e1bfb AM |
7629 | } |
7630 | break; | |
7631 | ||
7632 | case R_PPC64_TLS: | |
951fd09b AM |
7633 | if (tls_mask != 0 |
7634 | && (tls_mask & TLS_TPREL) == 0) | |
411e1bfb | 7635 | { |
50bc7936 | 7636 | bfd_vma rtra; |
411e1bfb | 7637 | insn = bfd_get_32 (output_bfd, contents + rel->r_offset); |
772119ce | 7638 | if ((insn & ((0x3f << 26) | (31 << 11))) |
411e1bfb AM |
7639 | == ((31 << 26) | (13 << 11))) |
7640 | rtra = insn & ((1 << 26) - (1 << 16)); | |
772119ce | 7641 | else if ((insn & ((0x3f << 26) | (31 << 16))) |
411e1bfb AM |
7642 | == ((31 << 26) | (13 << 16))) |
7643 | rtra = (insn & (31 << 21)) | ((insn & (31 << 11)) << 5); | |
7644 | else | |
7645 | abort (); | |
7646 | if ((insn & ((1 << 11) - (1 << 1))) == 266 << 1) | |
7647 | /* add -> addi. */ | |
7648 | insn = 14 << 26; | |
7649 | else if ((insn & (31 << 1)) == 23 << 1 | |
7650 | && ((insn & (31 << 6)) < 14 << 6 | |
7651 | || ((insn & (31 << 6)) >= 16 << 6 | |
7652 | && (insn & (31 << 6)) < 24 << 6))) | |
7653 | /* load and store indexed -> dform. */ | |
7654 | insn = (32 | ((insn >> 6) & 31)) << 26; | |
7655 | else if ((insn & (31 << 1)) == 21 << 1 | |
7656 | && (insn & (0x1a << 6)) == 0) | |
7657 | /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */ | |
7658 | insn = (((58 | ((insn >> 6) & 4)) << 26) | |
7659 | | ((insn >> 6) & 1)); | |
7660 | else if ((insn & (31 << 1)) == 21 << 1 | |
7661 | && (insn & ((1 << 11) - (1 << 1))) == 341 << 1) | |
7662 | /* lwax -> lwa. */ | |
7663 | insn = (58 << 26) | 2; | |
7664 | else | |
7665 | abort (); | |
7666 | insn |= rtra; | |
7667 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset); | |
411e1bfb AM |
7668 | /* Was PPC64_TLS which sits on insn boundary, now |
7669 | PPC64_TPREL16_LO which is at insn+2. */ | |
7670 | rel->r_offset += 2; | |
0d4792f7 AM |
7671 | r_type = R_PPC64_TPREL16_LO; |
7672 | if (toc_symndx != 0) | |
7673 | { | |
7674 | rel->r_info = ELF64_R_INFO (toc_symndx, r_type); | |
7675 | /* We changed the symbol. Start over in order to | |
7676 | get h, sym, sec etc. right. */ | |
7677 | rel--; | |
7678 | continue; | |
7679 | } | |
7680 | else | |
7681 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
411e1bfb AM |
7682 | } |
7683 | break; | |
7684 | ||
411e1bfb AM |
7685 | case R_PPC64_GOT_TLSGD16_HI: |
7686 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b AM |
7687 | tls_gd = TLS_TPRELGD; |
7688 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
7689 | goto tls_gdld_hi; | |
7690 | break; | |
7691 | ||
411e1bfb AM |
7692 | case R_PPC64_GOT_TLSLD16_HI: |
7693 | case R_PPC64_GOT_TLSLD16_HA: | |
951fd09b | 7694 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) |
411e1bfb | 7695 | { |
951fd09b AM |
7696 | tls_gdld_hi: |
7697 | if ((tls_mask & tls_gd) != 0) | |
7698 | r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3) | |
7699 | + R_PPC64_GOT_TPREL16_DS); | |
7700 | else | |
411e1bfb | 7701 | { |
951fd09b AM |
7702 | bfd_put_32 (output_bfd, NOP, contents + rel->r_offset); |
7703 | rel->r_offset -= 2; | |
7704 | r_type = R_PPC64_NONE; | |
411e1bfb | 7705 | } |
951fd09b | 7706 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); |
411e1bfb AM |
7707 | } |
7708 | break; | |
7709 | ||
951fd09b AM |
7710 | case R_PPC64_GOT_TLSGD16: |
7711 | case R_PPC64_GOT_TLSGD16_LO: | |
7712 | tls_gd = TLS_TPRELGD; | |
7713 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
7714 | goto tls_get_addr_check; | |
7715 | break; | |
411e1bfb | 7716 | |
951fd09b AM |
7717 | case R_PPC64_GOT_TLSLD16: |
7718 | case R_PPC64_GOT_TLSLD16_LO: | |
7719 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) | |
7720 | { | |
7721 | tls_get_addr_check: | |
7722 | if (rel + 1 < relend) | |
411e1bfb | 7723 | { |
951fd09b AM |
7724 | enum elf_ppc64_reloc_type r_type2; |
7725 | unsigned long r_symndx2; | |
7726 | struct elf_link_hash_entry *h2; | |
7727 | bfd_vma insn1, insn2, insn3; | |
7728 | bfd_vma offset; | |
7729 | ||
7730 | /* The next instruction should be a call to | |
7731 | __tls_get_addr. Peek at the reloc to be sure. */ | |
4ce794b7 | 7732 | r_type2 = ELF64_R_TYPE (rel[1].r_info); |
951fd09b AM |
7733 | r_symndx2 = ELF64_R_SYM (rel[1].r_info); |
7734 | if (r_symndx2 < symtab_hdr->sh_info | |
7735 | || (r_type2 != R_PPC64_REL14 | |
7736 | && r_type2 != R_PPC64_REL14_BRTAKEN | |
7737 | && r_type2 != R_PPC64_REL14_BRNTAKEN | |
7738 | && r_type2 != R_PPC64_REL24)) | |
7739 | break; | |
7740 | ||
7741 | h2 = sym_hashes[r_symndx2 - symtab_hdr->sh_info]; | |
7742 | while (h2->root.type == bfd_link_hash_indirect | |
7743 | || h2->root.type == bfd_link_hash_warning) | |
7744 | h2 = (struct elf_link_hash_entry *) h2->root.u.i.link; | |
7745 | if (h2 == NULL || h2 != htab->tls_get_addr) | |
7746 | break; | |
7747 | ||
7748 | /* OK, it checks out. Replace the call. */ | |
7749 | offset = rel[1].r_offset; | |
7750 | insn1 = bfd_get_32 (output_bfd, | |
7751 | contents + rel->r_offset - 2); | |
7752 | insn3 = bfd_get_32 (output_bfd, | |
7753 | contents + offset + 4); | |
7754 | if ((tls_mask & tls_gd) != 0) | |
411e1bfb | 7755 | { |
951fd09b AM |
7756 | /* IE */ |
7757 | insn1 &= (1 << 26) - (1 << 2); | |
7758 | insn1 |= 58 << 26; /* ld */ | |
7759 | insn2 = 0x7c636a14; /* add 3,3,13 */ | |
7760 | rel[1].r_info = ELF64_R_INFO (r_symndx2, R_PPC64_NONE); | |
7761 | if ((tls_mask & TLS_EXPLICIT) == 0) | |
7762 | r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3) | |
7763 | + R_PPC64_GOT_TPREL16_DS); | |
7764 | else | |
7765 | r_type += R_PPC64_TOC16_DS - R_PPC64_TOC16; | |
7766 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
411e1bfb AM |
7767 | } |
7768 | else | |
951fd09b AM |
7769 | { |
7770 | /* LE */ | |
7771 | insn1 = 0x3c6d0000; /* addis 3,13,0 */ | |
7772 | insn2 = 0x38630000; /* addi 3,3,0 */ | |
7773 | if (tls_gd == 0) | |
7774 | { | |
7775 | /* Was an LD reloc. */ | |
7776 | r_symndx = 0; | |
e1918d23 AM |
7777 | rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; |
7778 | rel[1].r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; | |
951fd09b | 7779 | } |
0d4792f7 AM |
7780 | else if (toc_symndx != 0) |
7781 | r_symndx = toc_symndx; | |
951fd09b AM |
7782 | r_type = R_PPC64_TPREL16_HA; |
7783 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
7784 | rel[1].r_info = ELF64_R_INFO (r_symndx, | |
7785 | R_PPC64_TPREL16_LO); | |
7786 | rel[1].r_offset += 2; | |
7787 | } | |
7788 | if (insn3 == NOP | |
7789 | || insn3 == CROR_151515 || insn3 == CROR_313131) | |
7790 | { | |
7791 | insn3 = insn2; | |
7792 | insn2 = NOP; | |
7793 | rel[1].r_offset += 4; | |
7794 | } | |
7795 | bfd_put_32 (output_bfd, insn1, contents + rel->r_offset - 2); | |
7796 | bfd_put_32 (output_bfd, insn2, contents + offset); | |
7797 | bfd_put_32 (output_bfd, insn3, contents + offset + 4); | |
0d4792f7 | 7798 | if (tls_gd == 0 || toc_symndx != 0) |
951fd09b | 7799 | { |
0d4792f7 AM |
7800 | /* We changed the symbol. Start over in order |
7801 | to get h, sym, sec etc. right. */ | |
951fd09b AM |
7802 | rel--; |
7803 | continue; | |
7804 | } | |
411e1bfb | 7805 | } |
411e1bfb | 7806 | } |
411e1bfb AM |
7807 | break; |
7808 | ||
7809 | case R_PPC64_DTPMOD64: | |
951fd09b AM |
7810 | if (rel + 1 < relend |
7811 | && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64) | |
7812 | && rel[1].r_offset == rel->r_offset + 8) | |
411e1bfb | 7813 | { |
951fd09b AM |
7814 | if ((tls_mask & TLS_GD) == 0) |
7815 | { | |
7816 | rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_NONE); | |
7817 | if ((tls_mask & TLS_TPRELGD) != 0) | |
7818 | r_type = R_PPC64_TPREL64; | |
7819 | else | |
7820 | { | |
4ce794b7 | 7821 | bfd_put_64 (output_bfd, 1, contents + rel->r_offset); |
951fd09b AM |
7822 | r_type = R_PPC64_NONE; |
7823 | } | |
7824 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
7825 | } | |
7826 | } | |
7827 | else | |
7828 | { | |
7829 | if ((tls_mask & TLS_LD) == 0) | |
411e1bfb | 7830 | { |
4ce794b7 | 7831 | bfd_put_64 (output_bfd, 1, contents + rel->r_offset); |
411e1bfb | 7832 | r_type = R_PPC64_NONE; |
951fd09b | 7833 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); |
411e1bfb | 7834 | } |
411e1bfb AM |
7835 | } |
7836 | break; | |
7837 | ||
7838 | case R_PPC64_TPREL64: | |
951fd09b | 7839 | if ((tls_mask & TLS_TPREL) == 0) |
411e1bfb AM |
7840 | { |
7841 | r_type = R_PPC64_NONE; | |
7842 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
7843 | } | |
7844 | break; | |
7845 | } | |
7846 | ||
7847 | /* Handle other relocations that tweak non-addend part of insn. */ | |
86c76c7b | 7848 | insn = 0; |
65f38f15 | 7849 | switch (r_type) |
5bd4f169 AM |
7850 | { |
7851 | default: | |
65f38f15 | 7852 | break; |
5bd4f169 | 7853 | |
65f38f15 AM |
7854 | /* Branch taken prediction relocations. */ |
7855 | case R_PPC64_ADDR14_BRTAKEN: | |
7856 | case R_PPC64_REL14_BRTAKEN: | |
cedb70c5 KH |
7857 | insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */ |
7858 | /* Fall thru. */ | |
65f38f15 | 7859 | |
86c76c7b | 7860 | /* Branch not taken prediction relocations. */ |
65f38f15 AM |
7861 | case R_PPC64_ADDR14_BRNTAKEN: |
7862 | case R_PPC64_REL14_BRNTAKEN: | |
411e1bfb AM |
7863 | insn |= bfd_get_32 (output_bfd, |
7864 | contents + rel->r_offset) & ~(0x01 << 21); | |
96e0dda4 AM |
7865 | if (is_power4) |
7866 | { | |
7867 | /* Set 'a' bit. This is 0b00010 in BO field for branch | |
7868 | on CR(BI) insns (BO == 001at or 011at), and 0b01000 | |
7869 | for branch on CTR insns (BO == 1a00t or 1a01t). */ | |
7870 | if ((insn & (0x14 << 21)) == (0x04 << 21)) | |
7871 | insn |= 0x02 << 21; | |
7872 | else if ((insn & (0x14 << 21)) == (0x10 << 21)) | |
7873 | insn |= 0x08 << 21; | |
7874 | else | |
7875 | break; | |
7876 | } | |
65f38f15 | 7877 | else |
96e0dda4 | 7878 | { |
411e1bfb | 7879 | from = (rel->r_offset |
805fc799 AM |
7880 | + input_section->output_offset |
7881 | + input_section->output_section->vma); | |
7882 | ||
96e0dda4 | 7883 | /* Invert 'y' bit if not the default. */ |
411e1bfb | 7884 | if ((bfd_signed_vma) (relocation + rel->r_addend - from) < 0) |
96e0dda4 AM |
7885 | insn ^= 0x01 << 21; |
7886 | } | |
86c76c7b | 7887 | |
4ce794b7 | 7888 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset); |
65f38f15 | 7889 | break; |
5bd4f169 | 7890 | |
65f38f15 | 7891 | case R_PPC64_REL24: |
ad8e1ba5 AM |
7892 | /* Calls to functions with a different TOC, such as calls to |
7893 | shared objects, need to alter the TOC pointer. This is | |
7894 | done using a linkage stub. A REL24 branching to these | |
7895 | linkage stubs needs to be followed by a nop, as the nop | |
7896 | will be replaced with an instruction to restore the TOC | |
7897 | base pointer. */ | |
7898 | if (((h != NULL | |
7899 | && (fdh = ((struct ppc_link_hash_entry *) h)->oh) != NULL | |
7900 | && fdh->plt.plist != NULL) | |
7901 | || ((fdh = h, sec) != NULL | |
7902 | && sec->output_section != NULL | |
7903 | && (htab->stub_group[sec->id].toc_off | |
7904 | != htab->stub_group[input_section->id].toc_off))) | |
721956f4 | 7905 | && (stub_entry = ppc_get_stub_entry (input_section, sec, fdh, |
ad8e1ba5 AM |
7906 | rel, htab)) != NULL |
7907 | && (stub_entry->stub_type == ppc_stub_plt_call | |
7908 | || stub_entry->stub_type == ppc_stub_plt_branch_r2off | |
7909 | || stub_entry->stub_type == ppc_stub_long_branch_r2off)) | |
41bd81ab | 7910 | { |
b34976b6 | 7911 | bfd_boolean can_plt_call = 0; |
721956f4 | 7912 | |
411e1bfb | 7913 | if (rel->r_offset + 8 <= input_section->_cooked_size) |
41bd81ab | 7914 | { |
411e1bfb | 7915 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset + 4); |
721956f4 AM |
7916 | if (insn == NOP |
7917 | || insn == CROR_151515 || insn == CROR_313131) | |
41bd81ab | 7918 | { |
4ce794b7 | 7919 | bfd_put_32 (input_bfd, LD_R2_40R1, |
411e1bfb | 7920 | contents + rel->r_offset + 4); |
721956f4 | 7921 | can_plt_call = 1; |
41bd81ab | 7922 | } |
5bd4f169 | 7923 | } |
721956f4 AM |
7924 | |
7925 | if (!can_plt_call) | |
7926 | { | |
ad8e1ba5 AM |
7927 | if (stub_entry->stub_type == ppc_stub_plt_call) |
7928 | { | |
7929 | /* If this is a plain branch rather than a branch | |
7930 | and link, don't require a nop. */ | |
7931 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
7932 | if ((insn & 1) == 0) | |
7933 | can_plt_call = 1; | |
7934 | } | |
6ab189d5 AM |
7935 | else if (h != NULL |
7936 | && strcmp (h->root.root.string, | |
7937 | ".__libc_start_main") == 0) | |
7938 | { | |
7939 | /* Allow crt1 branch to go via a toc adjusting stub. */ | |
7940 | can_plt_call = 1; | |
7941 | } | |
ad8e1ba5 AM |
7942 | else |
7943 | { | |
7944 | if (strcmp (input_section->output_section->name, | |
7945 | ".init") == 0 | |
7946 | || strcmp (input_section->output_section->name, | |
7947 | ".fini") == 0) | |
7948 | (*_bfd_error_handler) | |
7949 | (_("%s(%s+0x%lx): automatic multiple TOCs " | |
7950 | "not supported using your crt files; " | |
7951 | "recompile with -mminimal-toc or upgrade gcc"), | |
7952 | bfd_archive_filename (input_bfd), | |
7953 | input_section->name, | |
7954 | (long) rel->r_offset); | |
7955 | else | |
7956 | (*_bfd_error_handler) | |
7957 | (_("%s(%s+0x%lx): sibling call optimization to `%s' " | |
7958 | "does not allow automatic multiple TOCs; " | |
7959 | "recompile with -mminimal-toc or " | |
7960 | "-fno-optimize-sibling-calls, " | |
7961 | "or make `%s' extern"), | |
7962 | bfd_archive_filename (input_bfd), | |
7963 | input_section->name, | |
7964 | (long) rel->r_offset, | |
7965 | sym_name, | |
7966 | sym_name); | |
7967 | bfd_set_error (bfd_error_bad_value); | |
7968 | ret = FALSE; | |
7969 | } | |
721956f4 AM |
7970 | } |
7971 | ||
7972 | if (can_plt_call) | |
7973 | { | |
7974 | relocation = (stub_entry->stub_offset | |
7975 | + stub_entry->stub_sec->output_offset | |
7976 | + stub_entry->stub_sec->output_section->vma); | |
ad8e1ba5 AM |
7977 | if (stub_entry->stub_type == ppc_stub_plt_call) |
7978 | unresolved_reloc = FALSE; | |
721956f4 | 7979 | } |
5bd4f169 | 7980 | } |
e86ce104 AM |
7981 | |
7982 | if (h != NULL | |
7983 | && h->root.type == bfd_link_hash_undefweak | |
721956f4 | 7984 | && relocation == 0 |
411e1bfb | 7985 | && rel->r_addend == 0) |
e86ce104 | 7986 | { |
721956f4 AM |
7987 | /* Tweak calls to undefined weak functions to point at a |
7988 | blr. We can thus call a weak function without first | |
7989 | checking whether the function is defined. We have a | |
7990 | blr at the end of .sfpr. */ | |
805fc799 | 7991 | BFD_ASSERT (htab->sfpr->_raw_size != 0); |
721956f4 AM |
7992 | relocation = (htab->sfpr->_raw_size - 4 |
7993 | + htab->sfpr->output_offset | |
7994 | + htab->sfpr->output_section->vma); | |
411e1bfb | 7995 | from = (rel->r_offset |
721956f4 AM |
7996 | + input_section->output_offset |
7997 | + input_section->output_section->vma); | |
805fc799 | 7998 | |
721956f4 AM |
7999 | /* But let's not be silly about it. If the blr isn't in |
8000 | reach, just go to the next instruction. */ | |
805fc799 AM |
8001 | if (relocation - from + (1 << 25) >= (1 << 26) |
8002 | || htab->sfpr->_raw_size == 0) | |
721956f4 | 8003 | relocation = from + 4; |
e86ce104 | 8004 | } |
65f38f15 AM |
8005 | break; |
8006 | } | |
5bd4f169 | 8007 | |
65f38f15 | 8008 | /* Set `addend'. */ |
411e1bfb AM |
8009 | tls_type = 0; |
8010 | addend = rel->r_addend; | |
65f38f15 AM |
8011 | switch (r_type) |
8012 | { | |
8013 | default: | |
8014 | (*_bfd_error_handler) | |
8015 | (_("%s: unknown relocation type %d for symbol %s"), | |
8016 | bfd_archive_filename (input_bfd), (int) r_type, sym_name); | |
5bd4f169 | 8017 | |
65f38f15 | 8018 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 8019 | ret = FALSE; |
65f38f15 | 8020 | continue; |
5bd4f169 | 8021 | |
65f38f15 | 8022 | case R_PPC64_NONE: |
411e1bfb | 8023 | case R_PPC64_TLS: |
04c9666a AM |
8024 | case R_PPC64_GNU_VTINHERIT: |
8025 | case R_PPC64_GNU_VTENTRY: | |
65f38f15 | 8026 | continue; |
5bd4f169 AM |
8027 | |
8028 | /* GOT16 relocations. Like an ADDR16 using the symbol's | |
8029 | address in the GOT as relocation value instead of the | |
411e1bfb | 8030 | symbol's value itself. Also, create a GOT entry for the |
5bd4f169 | 8031 | symbol and put the symbol value there. */ |
411e1bfb AM |
8032 | case R_PPC64_GOT_TLSGD16: |
8033 | case R_PPC64_GOT_TLSGD16_LO: | |
8034 | case R_PPC64_GOT_TLSGD16_HI: | |
8035 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b | 8036 | tls_type = TLS_TLS | TLS_GD; |
411e1bfb AM |
8037 | goto dogot; |
8038 | ||
8039 | case R_PPC64_GOT_TLSLD16: | |
8040 | case R_PPC64_GOT_TLSLD16_LO: | |
8041 | case R_PPC64_GOT_TLSLD16_HI: | |
8042 | case R_PPC64_GOT_TLSLD16_HA: | |
951fd09b | 8043 | tls_type = TLS_TLS | TLS_LD; |
411e1bfb AM |
8044 | goto dogot; |
8045 | ||
8046 | case R_PPC64_GOT_TPREL16_DS: | |
8047 | case R_PPC64_GOT_TPREL16_LO_DS: | |
8048 | case R_PPC64_GOT_TPREL16_HI: | |
8049 | case R_PPC64_GOT_TPREL16_HA: | |
8050 | tls_type = TLS_TLS | TLS_TPREL; | |
8051 | goto dogot; | |
8052 | ||
8053 | case R_PPC64_GOT_DTPREL16_DS: | |
8054 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
8055 | case R_PPC64_GOT_DTPREL16_HI: | |
8056 | case R_PPC64_GOT_DTPREL16_HA: | |
8057 | tls_type = TLS_TLS | TLS_DTPREL; | |
8058 | goto dogot; | |
8059 | ||
65f38f15 AM |
8060 | case R_PPC64_GOT16: |
8061 | case R_PPC64_GOT16_LO: | |
8062 | case R_PPC64_GOT16_HI: | |
8063 | case R_PPC64_GOT16_HA: | |
8064 | case R_PPC64_GOT16_DS: | |
8065 | case R_PPC64_GOT16_LO_DS: | |
411e1bfb | 8066 | dogot: |
5bd4f169 AM |
8067 | { |
8068 | /* Relocation is to the entry for this symbol in the global | |
8069 | offset table. */ | |
e717da7e | 8070 | asection *got; |
d881513a | 8071 | bfd_vma *offp; |
5bd4f169 | 8072 | bfd_vma off; |
d881513a | 8073 | unsigned long indx = 0; |
65f38f15 | 8074 | |
d881513a AM |
8075 | if (tls_type == (TLS_TLS | TLS_LD) |
8076 | && (h == NULL | |
8077 | || !(h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC))) | |
e717da7e | 8078 | offp = &ppc64_tlsld_got (input_bfd)->offset; |
411e1bfb | 8079 | else |
5bd4f169 | 8080 | { |
d881513a | 8081 | struct got_entry *ent; |
5bd4f169 | 8082 | |
d881513a AM |
8083 | if (h != NULL) |
8084 | { | |
8085 | bfd_boolean dyn = htab->elf.dynamic_sections_created; | |
f4656909 | 8086 | if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h) |
d881513a | 8087 | || (info->shared |
586119b3 | 8088 | && SYMBOL_REFERENCES_LOCAL (info, h))) |
d881513a AM |
8089 | /* This is actually a static link, or it is a |
8090 | -Bsymbolic link and the symbol is defined | |
8091 | locally, or the symbol was forced to be local | |
8092 | because of a version file. */ | |
8093 | ; | |
8094 | else | |
8095 | { | |
8096 | indx = h->dynindx; | |
8097 | unresolved_reloc = FALSE; | |
8098 | } | |
8099 | ent = h->got.glist; | |
8100 | } | |
411e1bfb | 8101 | else |
5bd4f169 | 8102 | { |
d881513a AM |
8103 | if (local_got_ents == NULL) |
8104 | abort (); | |
8105 | ent = local_got_ents[r_symndx]; | |
5bd4f169 | 8106 | } |
d881513a AM |
8107 | |
8108 | for (; ent != NULL; ent = ent->next) | |
8109 | if (ent->addend == rel->r_addend | |
e717da7e | 8110 | && ent->owner == input_bfd |
d881513a AM |
8111 | && ent->tls_type == tls_type) |
8112 | break; | |
8113 | if (ent == NULL) | |
8114 | abort (); | |
8115 | offp = &ent->got.offset; | |
5bd4f169 | 8116 | } |
411e1bfb | 8117 | |
e717da7e AM |
8118 | got = ppc64_elf_tdata (input_bfd)->got; |
8119 | if (got == NULL) | |
8120 | abort (); | |
8121 | ||
411e1bfb AM |
8122 | /* The offset must always be a multiple of 8. We use the |
8123 | least significant bit to record whether we have already | |
8124 | processed this entry. */ | |
d881513a | 8125 | off = *offp; |
411e1bfb AM |
8126 | if ((off & 1) != 0) |
8127 | off &= ~1; | |
5bd4f169 AM |
8128 | else |
8129 | { | |
411e1bfb AM |
8130 | /* Generate relocs for the dynamic linker, except in |
8131 | the case of TLSLD where we'll use one entry per | |
8132 | module. */ | |
e717da7e AM |
8133 | asection *relgot = ppc64_elf_tdata (input_bfd)->relgot; |
8134 | ||
d881513a | 8135 | *offp = off | 1; |
4e795f50 AM |
8136 | if ((info->shared || indx != 0) |
8137 | && (h == NULL | |
8138 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
8139 | || h->root.type != bfd_link_hash_undefweak)) | |
5bd4f169 | 8140 | { |
e717da7e AM |
8141 | outrel.r_offset = (got->output_section->vma |
8142 | + got->output_offset | |
411e1bfb | 8143 | + off); |
81407a69 | 8144 | outrel.r_addend = rel->r_addend; |
d881513a | 8145 | if (tls_type & (TLS_LD | TLS_GD)) |
5bd4f169 | 8146 | { |
411e1bfb | 8147 | outrel.r_addend = 0; |
e515b051 | 8148 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPMOD64); |
d881513a AM |
8149 | if (tls_type == (TLS_TLS | TLS_GD)) |
8150 | { | |
e717da7e AM |
8151 | loc = relgot->contents; |
8152 | loc += (relgot->reloc_count++ | |
d881513a AM |
8153 | * sizeof (Elf64_External_Rela)); |
8154 | bfd_elf64_swap_reloca_out (output_bfd, | |
8155 | &outrel, loc); | |
e515b051 | 8156 | outrel.r_offset += 8; |
81407a69 | 8157 | outrel.r_addend = rel->r_addend; |
d881513a AM |
8158 | outrel.r_info |
8159 | = ELF64_R_INFO (indx, R_PPC64_DTPREL64); | |
d881513a | 8160 | } |
411e1bfb | 8161 | } |
951fd09b | 8162 | else if (tls_type == (TLS_TLS | TLS_DTPREL)) |
411e1bfb | 8163 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64); |
951fd09b | 8164 | else if (tls_type == (TLS_TLS | TLS_TPREL)) |
411e1bfb AM |
8165 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_TPREL64); |
8166 | else if (indx == 0) | |
81407a69 AM |
8167 | { |
8168 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_RELATIVE); | |
8169 | ||
8170 | /* Write the .got section contents for the sake | |
8171 | of prelink. */ | |
e717da7e | 8172 | loc = got->contents + off; |
23fbd6fa JJ |
8173 | bfd_put_64 (output_bfd, outrel.r_addend + relocation, |
8174 | loc); | |
81407a69 | 8175 | } |
411e1bfb AM |
8176 | else |
8177 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT); | |
81407a69 AM |
8178 | |
8179 | if (indx == 0 && tls_type != (TLS_TLS | TLS_LD)) | |
e515b051 AM |
8180 | { |
8181 | outrel.r_addend += relocation; | |
8182 | if (tls_type & (TLS_GD | TLS_DTPREL | TLS_TPREL)) | |
e1918d23 | 8183 | outrel.r_addend -= htab->elf.tls_sec->vma; |
e515b051 | 8184 | } |
e717da7e AM |
8185 | loc = relgot->contents; |
8186 | loc += (relgot->reloc_count++ | |
411e1bfb AM |
8187 | * sizeof (Elf64_External_Rela)); |
8188 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); | |
8189 | } | |
8190 | ||
ad8e1ba5 | 8191 | /* Init the .got section contents here if we're not |
81407a69 | 8192 | emitting a reloc. */ |
d881513a | 8193 | else |
411e1bfb | 8194 | { |
d881513a | 8195 | relocation += rel->r_addend; |
7b609f53 AM |
8196 | if (tls_type == (TLS_TLS | TLS_LD)) |
8197 | relocation = 1; | |
8198 | else if (tls_type != 0) | |
411e1bfb | 8199 | { |
e1918d23 | 8200 | relocation -= htab->elf.tls_sec->vma + DTP_OFFSET; |
7b609f53 | 8201 | if (tls_type == (TLS_TLS | TLS_TPREL)) |
411e1bfb | 8202 | relocation += DTP_OFFSET - TP_OFFSET; |
5bd4f169 | 8203 | |
7b609f53 AM |
8204 | if (tls_type == (TLS_TLS | TLS_GD)) |
8205 | { | |
8206 | bfd_put_64 (output_bfd, relocation, | |
e717da7e | 8207 | got->contents + off + 8); |
7b609f53 AM |
8208 | relocation = 1; |
8209 | } | |
411e1bfb | 8210 | } |
7b609f53 | 8211 | |
411e1bfb | 8212 | bfd_put_64 (output_bfd, relocation, |
e717da7e | 8213 | got->contents + off); |
5bd4f169 AM |
8214 | } |
8215 | } | |
8216 | ||
65f38f15 AM |
8217 | if (off >= (bfd_vma) -2) |
8218 | abort (); | |
8219 | ||
e717da7e | 8220 | relocation = got->output_offset + off; |
65f38f15 | 8221 | |
5bd4f169 | 8222 | /* TOC base (r2) is TOC start plus 0x8000. */ |
e717da7e | 8223 | addend = -TOC_BASE_OFF; |
5bd4f169 | 8224 | } |
65f38f15 AM |
8225 | break; |
8226 | ||
8227 | case R_PPC64_PLT16_HA: | |
8228 | case R_PPC64_PLT16_HI: | |
8229 | case R_PPC64_PLT16_LO: | |
8230 | case R_PPC64_PLT32: | |
8231 | case R_PPC64_PLT64: | |
8232 | /* Relocation is to the entry for this symbol in the | |
8233 | procedure linkage table. */ | |
8234 | ||
8235 | /* Resolve a PLT reloc against a local symbol directly, | |
8236 | without using the procedure linkage table. */ | |
8237 | if (h == NULL) | |
8238 | break; | |
8239 | ||
411e1bfb AM |
8240 | /* It's possible that we didn't make a PLT entry for this |
8241 | symbol. This happens when statically linking PIC code, | |
8242 | or when using -Bsymbolic. Go find a match if there is a | |
8243 | PLT entry. */ | |
4ce794b7 | 8244 | if (htab->plt != NULL) |
65f38f15 | 8245 | { |
411e1bfb AM |
8246 | struct plt_entry *ent; |
8247 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) | |
8248 | if (ent->addend == rel->r_addend | |
8249 | && ent->plt.offset != (bfd_vma) -1) | |
8250 | { | |
4ce794b7 AM |
8251 | relocation = (htab->plt->output_section->vma |
8252 | + htab->plt->output_offset | |
411e1bfb AM |
8253 | + ent->plt.offset); |
8254 | unresolved_reloc = FALSE; | |
8255 | } | |
65f38f15 | 8256 | } |
65f38f15 | 8257 | break; |
5bd4f169 | 8258 | |
0b13192e AM |
8259 | case R_PPC64_TOC: |
8260 | /* Relocation value is TOC base. */ | |
8261 | relocation = TOCstart; | |
8262 | if (r_symndx == 0) | |
8263 | relocation += htab->stub_group[input_section->id].toc_off; | |
8517fae7 AM |
8264 | else if (unresolved_reloc) |
8265 | ; | |
8266 | else if (sec != NULL && sec->id <= htab->top_id) | |
0b13192e AM |
8267 | relocation += htab->stub_group[sec->id].toc_off; |
8268 | else | |
8269 | unresolved_reloc = TRUE; | |
8270 | goto dodyn2; | |
8271 | ||
5bd4f169 AM |
8272 | /* TOC16 relocs. We want the offset relative to the TOC base, |
8273 | which is the address of the start of the TOC plus 0x8000. | |
8274 | The TOC consists of sections .got, .toc, .tocbss, and .plt, | |
8275 | in this order. */ | |
65f38f15 AM |
8276 | case R_PPC64_TOC16: |
8277 | case R_PPC64_TOC16_LO: | |
8278 | case R_PPC64_TOC16_HI: | |
8279 | case R_PPC64_TOC16_DS: | |
8280 | case R_PPC64_TOC16_LO_DS: | |
8281 | case R_PPC64_TOC16_HA: | |
ad8e1ba5 | 8282 | addend -= TOCstart + htab->stub_group[input_section->id].toc_off; |
5bd4f169 AM |
8283 | break; |
8284 | ||
8285 | /* Relocate against the beginning of the section. */ | |
65f38f15 AM |
8286 | case R_PPC64_SECTOFF: |
8287 | case R_PPC64_SECTOFF_LO: | |
8288 | case R_PPC64_SECTOFF_HI: | |
8289 | case R_PPC64_SECTOFF_DS: | |
8290 | case R_PPC64_SECTOFF_LO_DS: | |
8291 | case R_PPC64_SECTOFF_HA: | |
4ce794b7 | 8292 | if (sec != NULL) |
65f38f15 | 8293 | addend -= sec->output_section->vma; |
5bd4f169 AM |
8294 | break; |
8295 | ||
721956f4 AM |
8296 | case R_PPC64_REL14: |
8297 | case R_PPC64_REL14_BRNTAKEN: | |
8298 | case R_PPC64_REL14_BRTAKEN: | |
5d1634d7 AM |
8299 | case R_PPC64_REL24: |
8300 | break; | |
8301 | ||
411e1bfb AM |
8302 | case R_PPC64_TPREL16: |
8303 | case R_PPC64_TPREL16_LO: | |
8304 | case R_PPC64_TPREL16_HI: | |
8305 | case R_PPC64_TPREL16_HA: | |
8306 | case R_PPC64_TPREL16_DS: | |
8307 | case R_PPC64_TPREL16_LO_DS: | |
8308 | case R_PPC64_TPREL16_HIGHER: | |
8309 | case R_PPC64_TPREL16_HIGHERA: | |
8310 | case R_PPC64_TPREL16_HIGHEST: | |
8311 | case R_PPC64_TPREL16_HIGHESTA: | |
e1918d23 | 8312 | addend -= htab->elf.tls_sec->vma + TP_OFFSET; |
411e1bfb AM |
8313 | if (info->shared) |
8314 | /* The TPREL16 relocs shouldn't really be used in shared | |
8315 | libs as they will result in DT_TEXTREL being set, but | |
8316 | support them anyway. */ | |
8317 | goto dodyn; | |
8318 | break; | |
8319 | ||
8320 | case R_PPC64_DTPREL16: | |
8321 | case R_PPC64_DTPREL16_LO: | |
8322 | case R_PPC64_DTPREL16_HI: | |
8323 | case R_PPC64_DTPREL16_HA: | |
8324 | case R_PPC64_DTPREL16_DS: | |
8325 | case R_PPC64_DTPREL16_LO_DS: | |
8326 | case R_PPC64_DTPREL16_HIGHER: | |
8327 | case R_PPC64_DTPREL16_HIGHERA: | |
8328 | case R_PPC64_DTPREL16_HIGHEST: | |
8329 | case R_PPC64_DTPREL16_HIGHESTA: | |
e1918d23 | 8330 | addend -= htab->elf.tls_sec->vma + DTP_OFFSET; |
411e1bfb AM |
8331 | break; |
8332 | ||
e515b051 AM |
8333 | case R_PPC64_DTPMOD64: |
8334 | relocation = 1; | |
8335 | addend = 0; | |
8336 | goto dodyn; | |
8337 | ||
411e1bfb | 8338 | case R_PPC64_TPREL64: |
e1918d23 | 8339 | addend -= htab->elf.tls_sec->vma + TP_OFFSET; |
411e1bfb AM |
8340 | goto dodyn; |
8341 | ||
8342 | case R_PPC64_DTPREL64: | |
e1918d23 | 8343 | addend -= htab->elf.tls_sec->vma + DTP_OFFSET; |
411e1bfb AM |
8344 | /* Fall thru */ |
8345 | ||
65f38f15 AM |
8346 | /* Relocations that may need to be propagated if this is a |
8347 | dynamic object. */ | |
04c9666a | 8348 | case R_PPC64_REL30: |
65f38f15 AM |
8349 | case R_PPC64_REL32: |
8350 | case R_PPC64_REL64: | |
8351 | case R_PPC64_ADDR14: | |
8352 | case R_PPC64_ADDR14_BRNTAKEN: | |
8353 | case R_PPC64_ADDR14_BRTAKEN: | |
8354 | case R_PPC64_ADDR16: | |
8355 | case R_PPC64_ADDR16_DS: | |
8356 | case R_PPC64_ADDR16_HA: | |
8357 | case R_PPC64_ADDR16_HI: | |
8358 | case R_PPC64_ADDR16_HIGHER: | |
8359 | case R_PPC64_ADDR16_HIGHERA: | |
8360 | case R_PPC64_ADDR16_HIGHEST: | |
8361 | case R_PPC64_ADDR16_HIGHESTA: | |
8362 | case R_PPC64_ADDR16_LO: | |
8363 | case R_PPC64_ADDR16_LO_DS: | |
8364 | case R_PPC64_ADDR24: | |
65f38f15 AM |
8365 | case R_PPC64_ADDR32: |
8366 | case R_PPC64_ADDR64: | |
8367 | case R_PPC64_UADDR16: | |
8368 | case R_PPC64_UADDR32: | |
8369 | case R_PPC64_UADDR64: | |
ec338859 AM |
8370 | /* r_symndx will be zero only for relocs against symbols |
8371 | from removed linkonce sections, or sections discarded by | |
8372 | a linker script. */ | |
411e1bfb | 8373 | dodyn: |
5d1634d7 AM |
8374 | if (r_symndx == 0) |
8375 | break; | |
8376 | /* Fall thru. */ | |
8377 | ||
0b13192e | 8378 | dodyn2: |
5d1634d7 | 8379 | if ((input_section->flags & SEC_ALLOC) == 0) |
ec338859 AM |
8380 | break; |
8381 | ||
41bd81ab AM |
8382 | if (NO_OPD_RELOCS && is_opd) |
8383 | break; | |
8384 | ||
65f38f15 | 8385 | if ((info->shared |
4e795f50 AM |
8386 | && (h == NULL |
8387 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
8388 | || h->root.type != bfd_link_hash_undefweak) | |
411e1bfb | 8389 | && (MUST_BE_DYN_RELOC (r_type) |
f6c52c13 | 8390 | || !SYMBOL_CALLS_LOCAL (info, h))) |
f4656909 AM |
8391 | || (ELIMINATE_COPY_RELOCS |
8392 | && !info->shared | |
65f38f15 AM |
8393 | && h != NULL |
8394 | && h->dynindx != -1 | |
8395 | && (h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0 | |
58ac9f71 AM |
8396 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0 |
8397 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)) | |
65f38f15 AM |
8398 | { |
8399 | Elf_Internal_Rela outrel; | |
b34976b6 | 8400 | bfd_boolean skip, relocate; |
65f38f15 | 8401 | asection *sreloc; |
947216bf | 8402 | bfd_byte *loc; |
1cf1f670 | 8403 | bfd_vma out_off; |
65f38f15 AM |
8404 | |
8405 | /* When generating a dynamic object, these relocations | |
8406 | are copied into the output file to be resolved at run | |
8407 | time. */ | |
8408 | ||
b34976b6 AM |
8409 | skip = FALSE; |
8410 | relocate = FALSE; | |
65f38f15 | 8411 | |
1cf1f670 AM |
8412 | out_off = _bfd_elf_section_offset (output_bfd, info, |
8413 | input_section, rel->r_offset); | |
8414 | if (out_off == (bfd_vma) -1) | |
b34976b6 | 8415 | skip = TRUE; |
1cf1f670 | 8416 | else if (out_off == (bfd_vma) -2) |
b34976b6 | 8417 | skip = TRUE, relocate = TRUE; |
1cf1f670 AM |
8418 | out_off += (input_section->output_section->vma |
8419 | + input_section->output_offset); | |
8420 | outrel.r_offset = out_off; | |
411e1bfb | 8421 | outrel.r_addend = rel->r_addend; |
65f38f15 | 8422 | |
1cf1f670 AM |
8423 | /* Optimize unaligned reloc use. */ |
8424 | if ((r_type == R_PPC64_ADDR64 && (out_off & 7) != 0) | |
8425 | || (r_type == R_PPC64_UADDR64 && (out_off & 7) == 0)) | |
8426 | r_type ^= R_PPC64_ADDR64 ^ R_PPC64_UADDR64; | |
8427 | else if ((r_type == R_PPC64_ADDR32 && (out_off & 3) != 0) | |
8428 | || (r_type == R_PPC64_UADDR32 && (out_off & 3) == 0)) | |
8429 | r_type ^= R_PPC64_ADDR32 ^ R_PPC64_UADDR32; | |
8430 | else if ((r_type == R_PPC64_ADDR16 && (out_off & 1) != 0) | |
8431 | || (r_type == R_PPC64_UADDR16 && (out_off & 1) == 0)) | |
8432 | r_type ^= R_PPC64_ADDR16 ^ R_PPC64_UADDR16; | |
8433 | ||
65f38f15 | 8434 | if (skip) |
0bb2d96a | 8435 | memset (&outrel, 0, sizeof outrel); |
f6c52c13 | 8436 | else if (!SYMBOL_REFERENCES_LOCAL (info, h) |
0b13192e AM |
8437 | && !is_opd |
8438 | && r_type != R_PPC64_TOC) | |
0bb2d96a | 8439 | outrel.r_info = ELF64_R_INFO (h->dynindx, r_type); |
65f38f15 AM |
8440 | else |
8441 | { | |
41bd81ab AM |
8442 | /* This symbol is local, or marked to become local, |
8443 | or this is an opd section reloc which must point | |
8444 | at a local function. */ | |
65f38f15 | 8445 | outrel.r_addend += relocation; |
e86ce104 | 8446 | if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC) |
65f38f15 | 8447 | { |
3fad3c7c | 8448 | if (is_opd && h != NULL) |
afbe61cf AM |
8449 | { |
8450 | /* Lie about opd entries. This case occurs | |
8451 | when building shared libraries and we | |
8452 | reference a function in another shared | |
3fad3c7c AM |
8453 | lib. The same thing happens for a weak |
8454 | definition in an application that's | |
8455 | overridden by a strong definition in a | |
8456 | shared lib. (I believe this is a generic | |
8457 | bug in binutils handling of weak syms.) | |
8458 | In these cases we won't use the opd | |
1e2f5b6e | 8459 | entry in this lib. */ |
b34976b6 | 8460 | unresolved_reloc = FALSE; |
afbe61cf | 8461 | } |
65f38f15 | 8462 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); |
81407a69 AM |
8463 | |
8464 | /* We need to relocate .opd contents for ld.so. | |
8465 | Prelink also wants simple and consistent rules | |
8466 | for relocs. This make all RELATIVE relocs have | |
8467 | *r_offset equal to r_addend. */ | |
8468 | relocate = TRUE; | |
65f38f15 AM |
8469 | } |
8470 | else | |
8471 | { | |
8472 | long indx = 0; | |
8473 | ||
41bd81ab | 8474 | if (bfd_is_abs_section (sec)) |
65f38f15 AM |
8475 | ; |
8476 | else if (sec == NULL || sec->owner == NULL) | |
8477 | { | |
8478 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 8479 | return FALSE; |
65f38f15 AM |
8480 | } |
8481 | else | |
8482 | { | |
8483 | asection *osec; | |
8484 | ||
8485 | osec = sec->output_section; | |
8486 | indx = elf_section_data (osec)->dynindx; | |
8487 | ||
8488 | /* We are turning this relocation into one | |
8489 | against a section symbol, so subtract out | |
8490 | the output section's address but not the | |
8491 | offset of the input section in the output | |
8492 | section. */ | |
8493 | outrel.r_addend -= osec->vma; | |
8494 | } | |
8495 | ||
8496 | outrel.r_info = ELF64_R_INFO (indx, r_type); | |
8497 | } | |
8498 | } | |
8499 | ||
8500 | sreloc = elf_section_data (input_section)->sreloc; | |
8501 | if (sreloc == NULL) | |
8502 | abort (); | |
8503 | ||
947216bf AM |
8504 | loc = sreloc->contents; |
8505 | loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela); | |
65f38f15 AM |
8506 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); |
8507 | ||
8508 | /* If this reloc is against an external symbol, it will | |
8509 | be computed at runtime, so there's no need to do | |
81407a69 AM |
8510 | anything now. However, for the sake of prelink ensure |
8511 | that the section contents are a known value. */ | |
65f38f15 | 8512 | if (! relocate) |
81407a69 AM |
8513 | { |
8514 | unresolved_reloc = FALSE; | |
8515 | /* The value chosen here is quite arbitrary as ld.so | |
8516 | ignores section contents except for the special | |
8517 | case of .opd where the contents might be accessed | |
8518 | before relocation. Choose zero, as that won't | |
8519 | cause reloc overflow. */ | |
8520 | relocation = 0; | |
8521 | addend = 0; | |
8522 | /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs | |
8523 | to improve backward compatibility with older | |
8524 | versions of ld. */ | |
8525 | if (r_type == R_PPC64_ADDR64) | |
8526 | addend = outrel.r_addend; | |
8527 | /* Adjust pc_relative relocs to have zero in *r_offset. */ | |
4ce794b7 | 8528 | else if (ppc64_elf_howto_table[r_type]->pc_relative) |
000732f7 AM |
8529 | addend = (input_section->output_section->vma |
8530 | + input_section->output_offset | |
8531 | + rel->r_offset); | |
81407a69 | 8532 | } |
65f38f15 | 8533 | } |
5bd4f169 AM |
8534 | break; |
8535 | ||
65f38f15 AM |
8536 | case R_PPC64_COPY: |
8537 | case R_PPC64_GLOB_DAT: | |
8538 | case R_PPC64_JMP_SLOT: | |
8539 | case R_PPC64_RELATIVE: | |
8540 | /* We shouldn't ever see these dynamic relocs in relocatable | |
8541 | files. */ | |
ae9a127f | 8542 | /* Fall through. */ |
65f38f15 AM |
8543 | |
8544 | case R_PPC64_PLTGOT16: | |
8545 | case R_PPC64_PLTGOT16_DS: | |
8546 | case R_PPC64_PLTGOT16_HA: | |
8547 | case R_PPC64_PLTGOT16_HI: | |
8548 | case R_PPC64_PLTGOT16_LO: | |
8549 | case R_PPC64_PLTGOT16_LO_DS: | |
8550 | case R_PPC64_PLTREL32: | |
8551 | case R_PPC64_PLTREL64: | |
8552 | /* These ones haven't been implemented yet. */ | |
8553 | ||
8554 | (*_bfd_error_handler) | |
7b609f53 | 8555 | (_("%s: relocation %s is not supported for symbol %s."), |
65f38f15 | 8556 | bfd_archive_filename (input_bfd), |
4ce794b7 | 8557 | ppc64_elf_howto_table[r_type]->name, sym_name); |
5bd4f169 AM |
8558 | |
8559 | bfd_set_error (bfd_error_invalid_operation); | |
b34976b6 | 8560 | ret = FALSE; |
5bd4f169 | 8561 | continue; |
65f38f15 | 8562 | } |
5bd4f169 | 8563 | |
65f38f15 AM |
8564 | /* Do any further special processing. */ |
8565 | switch (r_type) | |
8566 | { | |
8567 | default: | |
8568 | break; | |
8569 | ||
8570 | case R_PPC64_ADDR16_HA: | |
8571 | case R_PPC64_ADDR16_HIGHERA: | |
8572 | case R_PPC64_ADDR16_HIGHESTA: | |
86bbe32f AM |
8573 | case R_PPC64_GOT16_HA: |
8574 | case R_PPC64_PLTGOT16_HA: | |
65f38f15 AM |
8575 | case R_PPC64_PLT16_HA: |
8576 | case R_PPC64_TOC16_HA: | |
8577 | case R_PPC64_SECTOFF_HA: | |
411e1bfb AM |
8578 | case R_PPC64_TPREL16_HA: |
8579 | case R_PPC64_DTPREL16_HA: | |
8580 | case R_PPC64_GOT_TLSGD16_HA: | |
8581 | case R_PPC64_GOT_TLSLD16_HA: | |
8582 | case R_PPC64_GOT_TPREL16_HA: | |
8583 | case R_PPC64_GOT_DTPREL16_HA: | |
8584 | case R_PPC64_TPREL16_HIGHER: | |
8585 | case R_PPC64_TPREL16_HIGHERA: | |
8586 | case R_PPC64_TPREL16_HIGHEST: | |
8587 | case R_PPC64_TPREL16_HIGHESTA: | |
8588 | case R_PPC64_DTPREL16_HIGHER: | |
8589 | case R_PPC64_DTPREL16_HIGHERA: | |
8590 | case R_PPC64_DTPREL16_HIGHEST: | |
8591 | case R_PPC64_DTPREL16_HIGHESTA: | |
65f38f15 AM |
8592 | /* It's just possible that this symbol is a weak symbol |
8593 | that's not actually defined anywhere. In that case, | |
8594 | 'sec' would be NULL, and we should leave the symbol | |
8595 | alone (it will be set to zero elsewhere in the link). */ | |
8596 | if (sec != NULL) | |
e515b051 AM |
8597 | /* Add 0x10000 if sign bit in 0:15 is set. |
8598 | Bits 0:15 are not used. */ | |
8599 | addend += 0x8000; | |
65f38f15 AM |
8600 | break; |
8601 | ||
8602 | case R_PPC64_ADDR16_DS: | |
8603 | case R_PPC64_ADDR16_LO_DS: | |
8604 | case R_PPC64_GOT16_DS: | |
8605 | case R_PPC64_GOT16_LO_DS: | |
8606 | case R_PPC64_PLT16_LO_DS: | |
8607 | case R_PPC64_SECTOFF_DS: | |
8608 | case R_PPC64_SECTOFF_LO_DS: | |
8609 | case R_PPC64_TOC16_DS: | |
8610 | case R_PPC64_TOC16_LO_DS: | |
8611 | case R_PPC64_PLTGOT16_DS: | |
8612 | case R_PPC64_PLTGOT16_LO_DS: | |
411e1bfb AM |
8613 | case R_PPC64_GOT_TPREL16_DS: |
8614 | case R_PPC64_GOT_TPREL16_LO_DS: | |
8615 | case R_PPC64_GOT_DTPREL16_DS: | |
8616 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
8617 | case R_PPC64_TPREL16_DS: | |
8618 | case R_PPC64_TPREL16_LO_DS: | |
8619 | case R_PPC64_DTPREL16_DS: | |
8620 | case R_PPC64_DTPREL16_LO_DS: | |
adadcc0c AM |
8621 | insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3)); |
8622 | mask = 3; | |
8623 | /* If this reloc is against an lq insn, then the value must be | |
8624 | a multiple of 16. This is somewhat of a hack, but the | |
8625 | "correct" way to do this by defining _DQ forms of all the | |
8626 | _DS relocs bloats all reloc switches in this file. It | |
8627 | doesn't seem to make much sense to use any of these relocs | |
8628 | in data, so testing the insn should be safe. */ | |
494dac0c | 8629 | if ((insn & (0x3f << 26)) == (56u << 26)) |
adadcc0c AM |
8630 | mask = 15; |
8631 | if (((relocation + addend) & mask) != 0) | |
65f38f15 AM |
8632 | { |
8633 | (*_bfd_error_handler) | |
adadcc0c | 8634 | (_("%s: error: relocation %s not a multiple of %d"), |
65f38f15 | 8635 | bfd_archive_filename (input_bfd), |
4ce794b7 | 8636 | ppc64_elf_howto_table[r_type]->name, |
adadcc0c | 8637 | mask + 1); |
65f38f15 | 8638 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 8639 | ret = FALSE; |
65f38f15 AM |
8640 | continue; |
8641 | } | |
8642 | break; | |
721956f4 AM |
8643 | |
8644 | case R_PPC64_REL14: | |
8645 | case R_PPC64_REL14_BRNTAKEN: | |
8646 | case R_PPC64_REL14_BRTAKEN: | |
8647 | max_br_offset = 1 << 15; | |
8648 | goto branch_check; | |
8649 | ||
8650 | case R_PPC64_REL24: | |
8651 | max_br_offset = 1 << 25; | |
8652 | ||
8653 | branch_check: | |
ad8e1ba5 AM |
8654 | /* If the branch is out of reach or the TOC register needs |
8655 | adjusting, then redirect the call to the local stub for | |
8656 | this function. */ | |
411e1bfb | 8657 | from = (rel->r_offset |
721956f4 AM |
8658 | + input_section->output_offset |
8659 | + input_section->output_section->vma); | |
ad8e1ba5 AM |
8660 | if ((relocation + addend - from + max_br_offset >= 2 * max_br_offset |
8661 | || (sec != NULL | |
8662 | && sec->output_section != NULL | |
8f3bab57 | 8663 | && sec->id <= htab->top_id |
ad8e1ba5 AM |
8664 | && (htab->stub_group[sec->id].toc_off |
8665 | != htab->stub_group[input_section->id].toc_off))) | |
721956f4 AM |
8666 | && (stub_entry = ppc_get_stub_entry (input_section, sec, h, |
8667 | rel, htab)) != NULL) | |
8668 | { | |
8669 | /* Munge up the value and addend so that we call the stub | |
8670 | rather than the procedure directly. */ | |
8671 | relocation = (stub_entry->stub_offset | |
8672 | + stub_entry->stub_sec->output_offset | |
8673 | + stub_entry->stub_sec->output_section->vma); | |
8674 | addend = 0; | |
8675 | } | |
8676 | break; | |
5bd4f169 AM |
8677 | } |
8678 | ||
239e1f3a AM |
8679 | /* Dynamic relocs are not propagated for SEC_DEBUGGING sections |
8680 | because such sections are not SEC_ALLOC and thus ld.so will | |
8681 | not process them. */ | |
65f38f15 | 8682 | if (unresolved_reloc |
239e1f3a | 8683 | && !((input_section->flags & SEC_DEBUGGING) != 0 |
65f38f15 | 8684 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0)) |
9c07fe7c AM |
8685 | { |
8686 | (*_bfd_error_handler) | |
7b609f53 | 8687 | (_("%s(%s+0x%lx): unresolvable %s relocation against symbol `%s'"), |
9c07fe7c AM |
8688 | bfd_archive_filename (input_bfd), |
8689 | bfd_get_section_name (input_bfd, input_section), | |
8690 | (long) rel->r_offset, | |
7b609f53 | 8691 | ppc64_elf_howto_table[(int) r_type]->name, |
9c07fe7c | 8692 | h->root.root.string); |
b34976b6 | 8693 | ret = FALSE; |
9c07fe7c | 8694 | } |
5bd4f169 | 8695 | |
65f38f15 | 8696 | r = _bfd_final_link_relocate (ppc64_elf_howto_table[(int) r_type], |
5bd4f169 AM |
8697 | input_bfd, |
8698 | input_section, | |
8699 | contents, | |
411e1bfb | 8700 | rel->r_offset, |
5bd4f169 AM |
8701 | relocation, |
8702 | addend); | |
8703 | ||
ef60b7ff | 8704 | if (r != bfd_reloc_ok) |
5bd4f169 | 8705 | { |
cd27b276 AM |
8706 | if (sym_name == NULL) |
8707 | sym_name = "(null)"; | |
8708 | if (r == bfd_reloc_overflow) | |
5bd4f169 | 8709 | { |
cd27b276 AM |
8710 | if (warned) |
8711 | continue; | |
8712 | if (h != NULL | |
8713 | && h->root.type == bfd_link_hash_undefweak | |
4ce794b7 | 8714 | && ppc64_elf_howto_table[r_type]->pc_relative) |
5bd4f169 AM |
8715 | { |
8716 | /* Assume this is a call protected by other code that | |
8717 | detects the symbol is undefined. If this is the case, | |
8718 | we can safely ignore the overflow. If not, the | |
8719 | program is hosed anyway, and a little warning isn't | |
8720 | going to help. */ | |
8721 | ||
8722 | continue; | |
8723 | } | |
8724 | ||
ef60b7ff | 8725 | if (!((*info->callbacks->reloc_overflow) |
4ce794b7 | 8726 | (info, sym_name, ppc64_elf_howto_table[r_type]->name, |
411e1bfb | 8727 | rel->r_addend, input_bfd, input_section, rel->r_offset))) |
b34976b6 | 8728 | return FALSE; |
ef60b7ff AM |
8729 | } |
8730 | else | |
8731 | { | |
8732 | (*_bfd_error_handler) | |
7b609f53 | 8733 | (_("%s(%s+0x%lx): %s reloc against `%s': error %d"), |
ef60b7ff AM |
8734 | bfd_archive_filename (input_bfd), |
8735 | bfd_get_section_name (input_bfd, input_section), | |
7b609f53 | 8736 | (long) rel->r_offset, |
4ce794b7 | 8737 | ppc64_elf_howto_table[r_type]->name, |
7b609f53 AM |
8738 | sym_name, |
8739 | (int) r); | |
b34976b6 | 8740 | ret = FALSE; |
ef60b7ff | 8741 | } |
5bd4f169 | 8742 | } |
5bd4f169 AM |
8743 | } |
8744 | ||
5bd4f169 AM |
8745 | return ret; |
8746 | } | |
8747 | ||
754021d0 AM |
8748 | /* Adjust the value of any local symbols in opd sections. */ |
8749 | ||
8750 | static bfd_boolean | |
8751 | ppc64_elf_output_symbol_hook (struct bfd_link_info *info, | |
8752 | const char *name ATTRIBUTE_UNUSED, | |
8753 | Elf_Internal_Sym *elfsym, | |
8754 | asection *input_sec, | |
8755 | struct elf_link_hash_entry *h) | |
8756 | { | |
8757 | long *adjust; | |
8758 | bfd_vma value; | |
8759 | ||
8760 | if (h != NULL | |
8761 | || input_sec == NULL | |
8762 | || ppc64_elf_section_data (input_sec) == NULL | |
8763 | || (adjust = ppc64_elf_section_data (input_sec)->opd.adjust) == NULL) | |
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 | ||
8770 | elfsym->st_value += adjust[value / 24]; | |
8771 | return TRUE; | |
8772 | } | |
8773 | ||
5bd4f169 AM |
8774 | /* Finish up dynamic symbol handling. We set the contents of various |
8775 | dynamic sections here. */ | |
8776 | ||
b34976b6 | 8777 | static bfd_boolean |
4ce794b7 AM |
8778 | ppc64_elf_finish_dynamic_symbol (bfd *output_bfd, |
8779 | struct bfd_link_info *info, | |
8780 | struct elf_link_hash_entry *h, | |
8781 | Elf_Internal_Sym *sym) | |
5bd4f169 | 8782 | { |
65f38f15 | 8783 | struct ppc_link_hash_table *htab; |
5bd4f169 AM |
8784 | bfd *dynobj; |
8785 | ||
65f38f15 AM |
8786 | htab = ppc_hash_table (info); |
8787 | dynobj = htab->elf.dynobj; | |
5bd4f169 | 8788 | |
411e1bfb | 8789 | if (((struct ppc_link_hash_entry *) h)->is_func_descriptor) |
5bd4f169 | 8790 | { |
411e1bfb | 8791 | struct plt_entry *ent; |
65f38f15 | 8792 | Elf_Internal_Rela rela; |
947216bf | 8793 | bfd_byte *loc; |
5bd4f169 | 8794 | |
411e1bfb AM |
8795 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) |
8796 | if (ent->plt.offset != (bfd_vma) -1) | |
8797 | { | |
8798 | /* This symbol has an entry in the procedure linkage | |
8799 | table. Set it up. */ | |
5bd4f169 | 8800 | |
4ce794b7 AM |
8801 | if (htab->plt == NULL |
8802 | || htab->relplt == NULL | |
8803 | || htab->glink == NULL) | |
411e1bfb | 8804 | abort (); |
5bd4f169 | 8805 | |
411e1bfb AM |
8806 | /* Create a JMP_SLOT reloc to inform the dynamic linker to |
8807 | fill in the PLT entry. */ | |
4ce794b7 AM |
8808 | rela.r_offset = (htab->plt->output_section->vma |
8809 | + htab->plt->output_offset | |
411e1bfb AM |
8810 | + ent->plt.offset); |
8811 | rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT); | |
8812 | rela.r_addend = ent->addend; | |
5bd4f169 | 8813 | |
4ce794b7 | 8814 | loc = htab->relplt->contents; |
411e1bfb AM |
8815 | loc += ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE) / PLT_ENTRY_SIZE |
8816 | * sizeof (Elf64_External_Rela)); | |
8817 | bfd_elf64_swap_reloca_out (output_bfd, &rela, loc); | |
8818 | } | |
5bd4f169 AM |
8819 | } |
8820 | ||
8821 | if ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_COPY) != 0) | |
8822 | { | |
5bd4f169 | 8823 | Elf_Internal_Rela rela; |
947216bf | 8824 | bfd_byte *loc; |
5bd4f169 | 8825 | |
65f38f15 | 8826 | /* This symbol needs a copy reloc. Set it up. */ |
5bd4f169 | 8827 | |
65f38f15 AM |
8828 | if (h->dynindx == -1 |
8829 | || (h->root.type != bfd_link_hash_defined | |
8830 | && h->root.type != bfd_link_hash_defweak) | |
4ce794b7 | 8831 | || htab->relbss == NULL) |
65f38f15 | 8832 | abort (); |
5bd4f169 AM |
8833 | |
8834 | rela.r_offset = (h->root.u.def.value | |
8835 | + h->root.u.def.section->output_section->vma | |
8836 | + h->root.u.def.section->output_offset); | |
8837 | rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY); | |
8838 | rela.r_addend = 0; | |
4ce794b7 AM |
8839 | loc = htab->relbss->contents; |
8840 | loc += htab->relbss->reloc_count++ * sizeof (Elf64_External_Rela); | |
65f38f15 | 8841 | bfd_elf64_swap_reloca_out (output_bfd, &rela, loc); |
5bd4f169 AM |
8842 | } |
8843 | ||
5bd4f169 AM |
8844 | /* Mark some specially defined symbols as absolute. */ |
8845 | if (strcmp (h->root.root.string, "_DYNAMIC") == 0) | |
8846 | sym->st_shndx = SHN_ABS; | |
8847 | ||
b34976b6 | 8848 | return TRUE; |
5bd4f169 AM |
8849 | } |
8850 | ||
65f38f15 AM |
8851 | /* Used to decide how to sort relocs in an optimal manner for the |
8852 | dynamic linker, before writing them out. */ | |
8853 | ||
8854 | static enum elf_reloc_type_class | |
4ce794b7 | 8855 | ppc64_elf_reloc_type_class (const Elf_Internal_Rela *rela) |
65f38f15 | 8856 | { |
04c9666a | 8857 | enum elf_ppc64_reloc_type r_type; |
a33d1f77 | 8858 | |
4ce794b7 | 8859 | r_type = ELF64_R_TYPE (rela->r_info); |
a33d1f77 | 8860 | switch (r_type) |
65f38f15 AM |
8861 | { |
8862 | case R_PPC64_RELATIVE: | |
8863 | return reloc_class_relative; | |
8864 | case R_PPC64_JMP_SLOT: | |
8865 | return reloc_class_plt; | |
8866 | case R_PPC64_COPY: | |
8867 | return reloc_class_copy; | |
8868 | default: | |
8869 | return reloc_class_normal; | |
8870 | } | |
8871 | } | |
8872 | ||
5bd4f169 AM |
8873 | /* Finish up the dynamic sections. */ |
8874 | ||
b34976b6 | 8875 | static bfd_boolean |
4ce794b7 AM |
8876 | ppc64_elf_finish_dynamic_sections (bfd *output_bfd, |
8877 | struct bfd_link_info *info) | |
5bd4f169 | 8878 | { |
65f38f15 AM |
8879 | struct ppc_link_hash_table *htab; |
8880 | bfd *dynobj; | |
5bd4f169 | 8881 | asection *sdyn; |
5bd4f169 | 8882 | |
65f38f15 AM |
8883 | htab = ppc_hash_table (info); |
8884 | dynobj = htab->elf.dynobj; | |
5bd4f169 AM |
8885 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); |
8886 | ||
65f38f15 | 8887 | if (htab->elf.dynamic_sections_created) |
5bd4f169 | 8888 | { |
5bd4f169 AM |
8889 | Elf64_External_Dyn *dyncon, *dynconend; |
8890 | ||
4ce794b7 | 8891 | if (sdyn == NULL || htab->got == NULL) |
65f38f15 | 8892 | abort (); |
5bd4f169 AM |
8893 | |
8894 | dyncon = (Elf64_External_Dyn *) sdyn->contents; | |
8895 | dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->_raw_size); | |
8896 | for (; dyncon < dynconend; dyncon++) | |
8897 | { | |
8898 | Elf_Internal_Dyn dyn; | |
19397422 | 8899 | asection *s; |
5bd4f169 AM |
8900 | |
8901 | bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn); | |
8902 | ||
8903 | switch (dyn.d_tag) | |
8904 | { | |
65f38f15 AM |
8905 | default: |
8906 | continue; | |
5bd4f169 | 8907 | |
5d1634d7 | 8908 | case DT_PPC64_GLINK: |
4ce794b7 | 8909 | s = htab->glink; |
6348e046 | 8910 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
ad8e1ba5 AM |
8911 | /* We stupidly defined DT_PPC64_GLINK to be the start |
8912 | of glink rather than the first entry point, which is | |
8913 | what ld.so needs, and now have a bigger stub to | |
8914 | support automatic multiple TOCs. */ | |
8915 | dyn.d_un.d_ptr += GLINK_CALL_STUB_SIZE - 32; | |
5d1634d7 AM |
8916 | break; |
8917 | ||
19397422 AM |
8918 | case DT_PPC64_OPD: |
8919 | s = bfd_get_section_by_name (output_bfd, ".opd"); | |
6348e046 AM |
8920 | if (s == NULL) |
8921 | continue; | |
8922 | dyn.d_un.d_ptr = s->vma; | |
19397422 AM |
8923 | break; |
8924 | ||
8925 | case DT_PPC64_OPDSZ: | |
8926 | s = bfd_get_section_by_name (output_bfd, ".opd"); | |
6348e046 AM |
8927 | if (s == NULL) |
8928 | continue; | |
8929 | dyn.d_un.d_val = s->_raw_size; | |
19397422 AM |
8930 | break; |
8931 | ||
65f38f15 | 8932 | case DT_PLTGOT: |
4ce794b7 | 8933 | s = htab->plt; |
6348e046 | 8934 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
65f38f15 AM |
8935 | break; |
8936 | ||
8937 | case DT_JMPREL: | |
4ce794b7 | 8938 | s = htab->relplt; |
6348e046 | 8939 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
65f38f15 | 8940 | break; |
5bd4f169 | 8941 | |
65f38f15 | 8942 | case DT_PLTRELSZ: |
4ce794b7 | 8943 | dyn.d_un.d_val = htab->relplt->_raw_size; |
5d1634d7 AM |
8944 | break; |
8945 | ||
8946 | case DT_RELASZ: | |
8947 | /* Don't count procedure linkage table relocs in the | |
8948 | overall reloc count. */ | |
4ce794b7 | 8949 | s = htab->relplt; |
6348e046 AM |
8950 | if (s == NULL) |
8951 | continue; | |
8952 | dyn.d_un.d_val -= s->_raw_size; | |
8953 | break; | |
8954 | ||
8955 | case DT_RELA: | |
8956 | /* We may not be using the standard ELF linker script. | |
8957 | If .rela.plt is the first .rela section, we adjust | |
8958 | DT_RELA to not include it. */ | |
4ce794b7 | 8959 | s = htab->relplt; |
6348e046 AM |
8960 | if (s == NULL) |
8961 | continue; | |
8962 | if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset) | |
8963 | continue; | |
8964 | dyn.d_un.d_ptr += s->_raw_size; | |
65f38f15 | 8965 | break; |
5bd4f169 | 8966 | } |
5bd4f169 | 8967 | |
65f38f15 | 8968 | bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); |
5bd4f169 | 8969 | } |
5bd4f169 AM |
8970 | } |
8971 | ||
4ce794b7 | 8972 | if (htab->got != NULL && htab->got->_raw_size != 0) |
5d1634d7 AM |
8973 | { |
8974 | /* Fill in the first entry in the global offset table. | |
8975 | We use it to hold the link-time TOCbase. */ | |
8976 | bfd_put_64 (output_bfd, | |
60ee0d4a | 8977 | elf_gp (output_bfd) + TOC_BASE_OFF, |
4ce794b7 | 8978 | htab->got->contents); |
5d1634d7 AM |
8979 | |
8980 | /* Set .got entry size. */ | |
4ce794b7 | 8981 | elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 8; |
5d1634d7 AM |
8982 | } |
8983 | ||
4ce794b7 | 8984 | if (htab->plt != NULL && htab->plt->_raw_size != 0) |
5d1634d7 AM |
8985 | { |
8986 | /* Set .plt entry size. */ | |
4ce794b7 | 8987 | elf_section_data (htab->plt->output_section)->this_hdr.sh_entsize |
5d1634d7 AM |
8988 | = PLT_ENTRY_SIZE; |
8989 | } | |
8990 | ||
e717da7e AM |
8991 | /* We need to handle writing out multiple GOT sections ourselves, |
8992 | since we didn't add them to DYNOBJ. */ | |
8993 | while ((dynobj = dynobj->link_next) != NULL) | |
8994 | { | |
8995 | asection *s; | |
8996 | s = ppc64_elf_tdata (dynobj)->got; | |
8997 | if (s != NULL | |
8998 | && s->_raw_size != 0 | |
8999 | && s->output_section != bfd_abs_section_ptr | |
9000 | && !bfd_set_section_contents (output_bfd, s->output_section, | |
9001 | s->contents, s->output_offset, | |
9002 | s->_raw_size)) | |
9003 | return FALSE; | |
9004 | s = ppc64_elf_tdata (dynobj)->relgot; | |
9005 | if (s != NULL | |
9006 | && s->_raw_size != 0 | |
9007 | && s->output_section != bfd_abs_section_ptr | |
9008 | && !bfd_set_section_contents (output_bfd, s->output_section, | |
9009 | s->contents, s->output_offset, | |
9010 | s->_raw_size)) | |
9011 | return FALSE; | |
9012 | } | |
f6c52c13 | 9013 | |
b34976b6 | 9014 | return TRUE; |
5bd4f169 AM |
9015 | } |
9016 | ||
5bd4f169 | 9017 | #include "elf64-target.h" |