Commit | Line | Data |
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5bd4f169 | 1 | /* PowerPC64-specific support for 64-bit ELF. |
3eb128b2 | 2 | Copyright 1999, 2000, 2001, 2002, 2003, 2004, 2005 |
b2a8e766 | 3 | Free Software Foundation, Inc. |
5bd4f169 AM |
4 | Written by Linus Nordberg, Swox AB <info@swox.com>, |
5 | based on elf32-ppc.c by Ian Lance Taylor. | |
d37c89e5 | 6 | Largely rewritten by Alan Modra <amodra@bigpond.net.au> |
5bd4f169 | 7 | |
ae9a127f | 8 | This file is part of BFD, the Binary File Descriptor library. |
5bd4f169 | 9 | |
ae9a127f NC |
10 | This program is free software; you can redistribute it and/or modify |
11 | it under the terms of the GNU General Public License as published by | |
12 | the Free Software Foundation; either version 2 of the License, or | |
13 | (at your option) any later version. | |
5bd4f169 | 14 | |
ae9a127f NC |
15 | This program is distributed in the hope that it will be useful, |
16 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
18 | GNU General Public License for more details. | |
5bd4f169 | 19 | |
4ce794b7 AM |
20 | You should have received a copy of the GNU General Public License along |
21 | with this program; if not, write to the Free Software Foundation, Inc., | |
3e110533 | 22 | 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */ |
5bd4f169 | 23 | |
4ce794b7 AM |
24 | /* The 64-bit PowerPC ELF ABI may be found at |
25 | http://www.linuxbase.org/spec/ELF/ppc64/PPC-elf64abi.txt, and | |
26 | http://www.linuxbase.org/spec/ELF/ppc64/spec/book1.html */ | |
5bd4f169 AM |
27 | |
28 | #include "bfd.h" | |
29 | #include "sysdep.h" | |
30 | #include "bfdlink.h" | |
31 | #include "libbfd.h" | |
32 | #include "elf-bfd.h" | |
04c9666a | 33 | #include "elf/ppc64.h" |
5d1634d7 | 34 | #include "elf64-ppc.h" |
5bd4f169 | 35 | |
805fc799 | 36 | static bfd_reloc_status_type ppc64_elf_ha_reloc |
4ce794b7 | 37 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
2441e016 AM |
38 | static bfd_reloc_status_type ppc64_elf_branch_reloc |
39 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); | |
805fc799 | 40 | static bfd_reloc_status_type ppc64_elf_brtaken_reloc |
4ce794b7 | 41 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
805fc799 | 42 | static bfd_reloc_status_type ppc64_elf_sectoff_reloc |
4ce794b7 | 43 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
805fc799 | 44 | static bfd_reloc_status_type ppc64_elf_sectoff_ha_reloc |
4ce794b7 | 45 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
805fc799 | 46 | static bfd_reloc_status_type ppc64_elf_toc_reloc |
4ce794b7 | 47 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
805fc799 | 48 | static bfd_reloc_status_type ppc64_elf_toc_ha_reloc |
4ce794b7 | 49 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
805fc799 | 50 | static bfd_reloc_status_type ppc64_elf_toc64_reloc |
4ce794b7 | 51 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
805fc799 | 52 | static bfd_reloc_status_type ppc64_elf_unhandled_reloc |
4ce794b7 | 53 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
2441e016 AM |
54 | static bfd_vma opd_entry_value |
55 | (asection *, bfd_vma, asection **, bfd_vma *); | |
5bd4f169 | 56 | |
ad8e1ba5 AM |
57 | #define TARGET_LITTLE_SYM bfd_elf64_powerpcle_vec |
58 | #define TARGET_LITTLE_NAME "elf64-powerpcle" | |
59 | #define TARGET_BIG_SYM bfd_elf64_powerpc_vec | |
60 | #define TARGET_BIG_NAME "elf64-powerpc" | |
61 | #define ELF_ARCH bfd_arch_powerpc | |
62 | #define ELF_MACHINE_CODE EM_PPC64 | |
63 | #define ELF_MAXPAGESIZE 0x10000 | |
64 | #define elf_info_to_howto ppc64_elf_info_to_howto | |
65 | ||
66 | #define elf_backend_want_got_sym 0 | |
67 | #define elf_backend_want_plt_sym 0 | |
68 | #define elf_backend_plt_alignment 3 | |
69 | #define elf_backend_plt_not_loaded 1 | |
ad8e1ba5 | 70 | #define elf_backend_got_header_size 8 |
ad8e1ba5 AM |
71 | #define elf_backend_can_gc_sections 1 |
72 | #define elf_backend_can_refcount 1 | |
73 | #define elf_backend_rela_normal 1 | |
74 | ||
e717da7e | 75 | #define bfd_elf64_mkobject ppc64_elf_mkobject |
ad8e1ba5 AM |
76 | #define bfd_elf64_bfd_reloc_type_lookup ppc64_elf_reloc_type_lookup |
77 | #define bfd_elf64_bfd_merge_private_bfd_data ppc64_elf_merge_private_bfd_data | |
78 | #define bfd_elf64_new_section_hook ppc64_elf_new_section_hook | |
79 | #define bfd_elf64_bfd_link_hash_table_create ppc64_elf_link_hash_table_create | |
80 | #define bfd_elf64_bfd_link_hash_table_free ppc64_elf_link_hash_table_free | |
90e3cdf2 | 81 | #define bfd_elf64_get_synthetic_symtab ppc64_elf_get_synthetic_symtab |
ad8e1ba5 AM |
82 | |
83 | #define elf_backend_object_p ppc64_elf_object_p | |
d37c89e5 AM |
84 | #define elf_backend_grok_prstatus ppc64_elf_grok_prstatus |
85 | #define elf_backend_grok_psinfo ppc64_elf_grok_psinfo | |
ad8e1ba5 AM |
86 | #define elf_backend_create_dynamic_sections ppc64_elf_create_dynamic_sections |
87 | #define elf_backend_copy_indirect_symbol ppc64_elf_copy_indirect_symbol | |
555cd476 | 88 | #define elf_backend_add_symbol_hook ppc64_elf_add_symbol_hook |
8387904d AM |
89 | #define elf_backend_check_directives ppc64_elf_check_directives |
90 | #define elf_backend_archive_symbol_lookup ppc64_elf_archive_symbol_lookup | |
ad8e1ba5 AM |
91 | #define elf_backend_check_relocs ppc64_elf_check_relocs |
92 | #define elf_backend_gc_mark_hook ppc64_elf_gc_mark_hook | |
93 | #define elf_backend_gc_sweep_hook ppc64_elf_gc_sweep_hook | |
94 | #define elf_backend_adjust_dynamic_symbol ppc64_elf_adjust_dynamic_symbol | |
95 | #define elf_backend_hide_symbol ppc64_elf_hide_symbol | |
96 | #define elf_backend_always_size_sections ppc64_elf_func_desc_adjust | |
97 | #define elf_backend_size_dynamic_sections ppc64_elf_size_dynamic_sections | |
98 | #define elf_backend_relocate_section ppc64_elf_relocate_section | |
99 | #define elf_backend_finish_dynamic_symbol ppc64_elf_finish_dynamic_symbol | |
100 | #define elf_backend_reloc_type_class ppc64_elf_reloc_type_class | |
101 | #define elf_backend_finish_dynamic_sections ppc64_elf_finish_dynamic_sections | |
754021d0 | 102 | #define elf_backend_link_output_symbol_hook ppc64_elf_output_symbol_hook |
2f89ff8d | 103 | #define elf_backend_special_sections ppc64_elf_special_sections |
ad8e1ba5 | 104 | |
5bd4f169 AM |
105 | /* The name of the dynamic interpreter. This is put in the .interp |
106 | section. */ | |
107 | #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1" | |
108 | ||
109 | /* The size in bytes of an entry in the procedure linkage table. */ | |
110 | #define PLT_ENTRY_SIZE 24 | |
111 | ||
112 | /* The initial size of the plt reserved for the dynamic linker. */ | |
5d1634d7 | 113 | #define PLT_INITIAL_ENTRY_SIZE PLT_ENTRY_SIZE |
5bd4f169 AM |
114 | |
115 | /* TOC base pointers offset from start of TOC. */ | |
411e1bfb AM |
116 | #define TOC_BASE_OFF 0x8000 |
117 | ||
118 | /* Offset of tp and dtp pointers from start of TLS block. */ | |
119 | #define TP_OFFSET 0x7000 | |
120 | #define DTP_OFFSET 0x8000 | |
5bd4f169 | 121 | |
ad8e1ba5 AM |
122 | /* .plt call stub instructions. The normal stub is like this, but |
123 | sometimes the .plt entry crosses a 64k boundary and we need to | |
124 | insert an addis to adjust r12. */ | |
125 | #define PLT_CALL_STUB_SIZE (7*4) | |
5d1634d7 AM |
126 | #define ADDIS_R12_R2 0x3d820000 /* addis %r12,%r2,xxx@ha */ |
127 | #define STD_R2_40R1 0xf8410028 /* std %r2,40(%r1) */ | |
128 | #define LD_R11_0R12 0xe96c0000 /* ld %r11,xxx+0@l(%r12) */ | |
129 | #define LD_R2_0R12 0xe84c0000 /* ld %r2,xxx+8@l(%r12) */ | |
130 | #define MTCTR_R11 0x7d6903a6 /* mtctr %r11 */ | |
131 | /* ld %r11,xxx+16@l(%r12) */ | |
132 | #define BCTR 0x4e800420 /* bctr */ | |
133 | ||
5d1634d7 | 134 | |
ad8e1ba5 AM |
135 | #define ADDIS_R2_R2 0x3c420000 /* addis %r2,%r2,off@ha */ |
136 | #define ADDI_R2_R2 0x38420000 /* addi %r2,%r2,off@l */ | |
137 | ||
138 | #define LD_R2_40R1 0xe8410028 /* ld %r2,40(%r1) */ | |
139 | ||
140 | /* glink call stub instructions. We enter with the index in R0, and the | |
141 | address of glink entry in CTR. From that, we can calculate PLT0. */ | |
142 | #define GLINK_CALL_STUB_SIZE (16*4) | |
143 | #define MFCTR_R12 0x7d8902a6 /* mfctr %r12 */ | |
144 | #define SLDI_R11_R0_3 0x780b1f24 /* sldi %r11,%r0,3 */ | |
145 | #define ADDIC_R2_R0_32K 0x34408000 /* addic. %r2,%r0,-32768 */ | |
146 | #define SUB_R12_R12_R11 0x7d8b6050 /* sub %r12,%r12,%r11 */ | |
147 | #define SRADI_R2_R2_63 0x7c42fe76 /* sradi %r2,%r2,63 */ | |
148 | #define SLDI_R11_R0_2 0x780b1764 /* sldi %r11,%r0,2 */ | |
149 | #define AND_R2_R2_R11 0x7c425838 /* and %r2,%r2,%r11 */ | |
150 | /* sub %r12,%r12,%r11 */ | |
151 | #define ADD_R12_R12_R2 0x7d8c1214 /* add %r12,%r12,%r2 */ | |
152 | #define ADDIS_R12_R12 0x3d8c0000 /* addis %r12,%r12,xxx@ha */ | |
153 | /* ld %r11,xxx@l(%r12) */ | |
154 | #define ADDI_R12_R12 0x398c0000 /* addi %r12,%r12,xxx@l */ | |
155 | /* ld %r2,8(%r12) */ | |
156 | /* mtctr %r11 */ | |
157 | /* ld %r11,16(%r12) */ | |
158 | /* bctr */ | |
5d1634d7 AM |
159 | |
160 | /* Pad with this. */ | |
161 | #define NOP 0x60000000 | |
162 | ||
721956f4 AM |
163 | /* Some other nops. */ |
164 | #define CROR_151515 0x4def7b82 | |
165 | #define CROR_313131 0x4ffffb82 | |
166 | ||
cedb70c5 | 167 | /* .glink entries for the first 32k functions are two instructions. */ |
5d1634d7 AM |
168 | #define LI_R0_0 0x38000000 /* li %r0,0 */ |
169 | #define B_DOT 0x48000000 /* b . */ | |
170 | ||
171 | /* After that, we need two instructions to load the index, followed by | |
172 | a branch. */ | |
173 | #define LIS_R0_0 0x3c000000 /* lis %r0,0 */ | |
10ed1bba | 174 | #define ORI_R0_R0_0 0x60000000 /* ori %r0,%r0,0 */ |
41bd81ab | 175 | |
deb0e272 AM |
176 | /* Instructions used by the save and restore reg functions. */ |
177 | #define STD_R0_0R1 0xf8010000 /* std %r0,0(%r1) */ | |
178 | #define STD_R0_0R12 0xf80c0000 /* std %r0,0(%r12) */ | |
179 | #define LD_R0_0R1 0xe8010000 /* ld %r0,0(%r1) */ | |
180 | #define LD_R0_0R12 0xe80c0000 /* ld %r0,0(%r12) */ | |
82bd7b59 AM |
181 | #define STFD_FR0_0R1 0xd8010000 /* stfd %fr0,0(%r1) */ |
182 | #define LFD_FR0_0R1 0xc8010000 /* lfd %fr0,0(%r1) */ | |
deb0e272 AM |
183 | #define LI_R12_0 0x39800000 /* li %r12,0 */ |
184 | #define STVX_VR0_R12_R0 0x7c0c01ce /* stvx %v0,%r12,%r0 */ | |
185 | #define LVX_VR0_R12_R0 0x7c0c00ce /* lvx %v0,%r12,%r0 */ | |
186 | #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */ | |
82bd7b59 AM |
187 | #define BLR 0x4e800020 /* blr */ |
188 | ||
41bd81ab AM |
189 | /* Since .opd is an array of descriptors and each entry will end up |
190 | with identical R_PPC64_RELATIVE relocs, there is really no need to | |
191 | propagate .opd relocs; The dynamic linker should be taught to | |
1e2f5b6e | 192 | relocate .opd without reloc entries. */ |
41bd81ab AM |
193 | #ifndef NO_OPD_RELOCS |
194 | #define NO_OPD_RELOCS 0 | |
195 | #endif | |
5bd4f169 | 196 | \f |
f5e87a1d | 197 | #define ONES(n) (((bfd_vma) 1 << ((n) - 1) << 1) - 1) |
b34976b6 | 198 | |
5bd4f169 | 199 | /* Relocation HOWTO's. */ |
04c9666a | 200 | static reloc_howto_type *ppc64_elf_howto_table[(int) R_PPC64_max]; |
5bd4f169 AM |
201 | |
202 | static reloc_howto_type ppc64_elf_howto_raw[] = { | |
203 | /* This reloc does nothing. */ | |
204 | HOWTO (R_PPC64_NONE, /* type */ | |
205 | 0, /* rightshift */ | |
411e1bfb AM |
206 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
207 | 32, /* bitsize */ | |
b34976b6 | 208 | FALSE, /* pc_relative */ |
5bd4f169 | 209 | 0, /* bitpos */ |
f5e87a1d | 210 | complain_overflow_dont, /* complain_on_overflow */ |
5bd4f169 AM |
211 | bfd_elf_generic_reloc, /* special_function */ |
212 | "R_PPC64_NONE", /* name */ | |
b34976b6 | 213 | FALSE, /* partial_inplace */ |
d006db6c | 214 | 0, /* src_mask */ |
5bd4f169 | 215 | 0, /* dst_mask */ |
b34976b6 | 216 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
217 | |
218 | /* A standard 32 bit relocation. */ | |
219 | HOWTO (R_PPC64_ADDR32, /* type */ | |
220 | 0, /* rightshift */ | |
221 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
222 | 32, /* bitsize */ | |
b34976b6 | 223 | FALSE, /* pc_relative */ |
5bd4f169 AM |
224 | 0, /* bitpos */ |
225 | complain_overflow_bitfield, /* complain_on_overflow */ | |
226 | bfd_elf_generic_reloc, /* special_function */ | |
227 | "R_PPC64_ADDR32", /* name */ | |
b34976b6 | 228 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
229 | 0, /* src_mask */ |
230 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 231 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
232 | |
233 | /* An absolute 26 bit branch; the lower two bits must be zero. | |
234 | FIXME: we don't check that, we just clear them. */ | |
235 | HOWTO (R_PPC64_ADDR24, /* type */ | |
236 | 0, /* rightshift */ | |
237 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
238 | 26, /* 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_ADDR24", /* name */ | |
b34976b6 | 244 | FALSE, /* partial_inplace */ |
d006db6c | 245 | 0, /* src_mask */ |
f5e87a1d | 246 | 0x03fffffc, /* dst_mask */ |
b34976b6 | 247 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
248 | |
249 | /* A standard 16 bit relocation. */ | |
250 | HOWTO (R_PPC64_ADDR16, /* 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_bitfield, /* complain_on_overflow */ | |
257 | bfd_elf_generic_reloc, /* special_function */ | |
258 | "R_PPC64_ADDR16", /* 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 | /* A 16 bit relocation without overflow. */ | |
265 | HOWTO (R_PPC64_ADDR16_LO, /* type */ | |
266 | 0, /* 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_LO", /* 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. */ | |
280 | HOWTO (R_PPC64_ADDR16_HI, /* type */ | |
281 | 16, /* rightshift */ | |
282 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
283 | 16, /* bitsize */ | |
b34976b6 | 284 | FALSE, /* pc_relative */ |
5bd4f169 AM |
285 | 0, /* bitpos */ |
286 | complain_overflow_dont, /* complain_on_overflow */ | |
287 | bfd_elf_generic_reloc, /* special_function */ | |
288 | "R_PPC64_ADDR16_HI", /* name */ | |
b34976b6 | 289 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
290 | 0, /* src_mask */ |
291 | 0xffff, /* dst_mask */ | |
b34976b6 | 292 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
293 | |
294 | /* Bits 16-31 of an address, plus 1 if the contents of the low 16 | |
295 | bits, treated as a signed number, is negative. */ | |
296 | HOWTO (R_PPC64_ADDR16_HA, /* type */ | |
297 | 16, /* rightshift */ | |
298 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
299 | 16, /* bitsize */ | |
b34976b6 | 300 | FALSE, /* pc_relative */ |
5bd4f169 AM |
301 | 0, /* bitpos */ |
302 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 303 | ppc64_elf_ha_reloc, /* special_function */ |
5bd4f169 | 304 | "R_PPC64_ADDR16_HA", /* name */ |
b34976b6 | 305 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
306 | 0, /* src_mask */ |
307 | 0xffff, /* dst_mask */ | |
b34976b6 | 308 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
309 | |
310 | /* An absolute 16 bit branch; the lower two bits must be zero. | |
311 | FIXME: we don't check that, we just clear them. */ | |
312 | HOWTO (R_PPC64_ADDR14, /* type */ | |
313 | 0, /* rightshift */ | |
314 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
315 | 16, /* bitsize */ | |
b34976b6 | 316 | FALSE, /* pc_relative */ |
5bd4f169 AM |
317 | 0, /* bitpos */ |
318 | complain_overflow_bitfield, /* complain_on_overflow */ | |
2441e016 | 319 | ppc64_elf_branch_reloc, /* special_function */ |
5bd4f169 | 320 | "R_PPC64_ADDR14", /* name */ |
b34976b6 | 321 | FALSE, /* partial_inplace */ |
d006db6c | 322 | 0, /* src_mask */ |
f5e87a1d | 323 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 324 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
325 | |
326 | /* An absolute 16 bit branch, for which bit 10 should be set to | |
327 | indicate that the branch is expected to be taken. The lower two | |
328 | bits must be zero. */ | |
329 | HOWTO (R_PPC64_ADDR14_BRTAKEN, /* type */ | |
330 | 0, /* rightshift */ | |
331 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
332 | 16, /* bitsize */ | |
b34976b6 | 333 | FALSE, /* pc_relative */ |
5bd4f169 AM |
334 | 0, /* bitpos */ |
335 | complain_overflow_bitfield, /* complain_on_overflow */ | |
805fc799 | 336 | ppc64_elf_brtaken_reloc, /* special_function */ |
5bd4f169 | 337 | "R_PPC64_ADDR14_BRTAKEN",/* name */ |
b34976b6 | 338 | FALSE, /* partial_inplace */ |
d006db6c | 339 | 0, /* src_mask */ |
f5e87a1d | 340 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 341 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
342 | |
343 | /* An absolute 16 bit branch, for which bit 10 should be set to | |
344 | indicate that the branch is not expected to be taken. The lower | |
345 | two bits must be zero. */ | |
346 | HOWTO (R_PPC64_ADDR14_BRNTAKEN, /* type */ | |
347 | 0, /* rightshift */ | |
348 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
349 | 16, /* bitsize */ | |
b34976b6 | 350 | FALSE, /* pc_relative */ |
5bd4f169 AM |
351 | 0, /* bitpos */ |
352 | complain_overflow_bitfield, /* complain_on_overflow */ | |
805fc799 | 353 | ppc64_elf_brtaken_reloc, /* special_function */ |
5bd4f169 | 354 | "R_PPC64_ADDR14_BRNTAKEN",/* name */ |
b34976b6 | 355 | FALSE, /* partial_inplace */ |
d006db6c | 356 | 0, /* src_mask */ |
f5e87a1d | 357 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 358 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
359 | |
360 | /* A relative 26 bit branch; the lower two bits must be zero. */ | |
361 | HOWTO (R_PPC64_REL24, /* type */ | |
362 | 0, /* rightshift */ | |
363 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
364 | 26, /* bitsize */ | |
b34976b6 | 365 | TRUE, /* pc_relative */ |
5bd4f169 AM |
366 | 0, /* bitpos */ |
367 | complain_overflow_signed, /* complain_on_overflow */ | |
2441e016 | 368 | ppc64_elf_branch_reloc, /* special_function */ |
5bd4f169 | 369 | "R_PPC64_REL24", /* name */ |
b34976b6 | 370 | FALSE, /* partial_inplace */ |
d006db6c | 371 | 0, /* src_mask */ |
f5e87a1d | 372 | 0x03fffffc, /* dst_mask */ |
b34976b6 | 373 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
374 | |
375 | /* A relative 16 bit branch; the lower two bits must be zero. */ | |
376 | HOWTO (R_PPC64_REL14, /* type */ | |
377 | 0, /* rightshift */ | |
378 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
379 | 16, /* bitsize */ | |
b34976b6 | 380 | TRUE, /* pc_relative */ |
5bd4f169 AM |
381 | 0, /* bitpos */ |
382 | complain_overflow_signed, /* complain_on_overflow */ | |
2441e016 | 383 | ppc64_elf_branch_reloc, /* special_function */ |
5bd4f169 | 384 | "R_PPC64_REL14", /* name */ |
b34976b6 | 385 | FALSE, /* partial_inplace */ |
d006db6c | 386 | 0, /* src_mask */ |
f5e87a1d | 387 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 388 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
389 | |
390 | /* A relative 16 bit branch. Bit 10 should be set to indicate that | |
391 | the branch is expected to be taken. The lower two bits must be | |
392 | zero. */ | |
393 | HOWTO (R_PPC64_REL14_BRTAKEN, /* type */ | |
394 | 0, /* rightshift */ | |
395 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
396 | 16, /* bitsize */ | |
b34976b6 | 397 | TRUE, /* pc_relative */ |
5bd4f169 AM |
398 | 0, /* bitpos */ |
399 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 400 | ppc64_elf_brtaken_reloc, /* special_function */ |
5bd4f169 | 401 | "R_PPC64_REL14_BRTAKEN", /* name */ |
b34976b6 | 402 | FALSE, /* partial_inplace */ |
d006db6c | 403 | 0, /* src_mask */ |
f5e87a1d | 404 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 405 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
406 | |
407 | /* A relative 16 bit branch. Bit 10 should be set to indicate that | |
408 | the branch is not expected to be taken. The lower two bits must | |
409 | be zero. */ | |
410 | HOWTO (R_PPC64_REL14_BRNTAKEN, /* type */ | |
411 | 0, /* rightshift */ | |
412 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
413 | 16, /* bitsize */ | |
b34976b6 | 414 | TRUE, /* pc_relative */ |
5bd4f169 AM |
415 | 0, /* bitpos */ |
416 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 417 | ppc64_elf_brtaken_reloc, /* special_function */ |
5bd4f169 | 418 | "R_PPC64_REL14_BRNTAKEN",/* name */ |
b34976b6 | 419 | FALSE, /* partial_inplace */ |
d006db6c | 420 | 0, /* src_mask */ |
f5e87a1d | 421 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 422 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
423 | |
424 | /* Like R_PPC64_ADDR16, but referring to the GOT table entry for the | |
425 | symbol. */ | |
426 | HOWTO (R_PPC64_GOT16, /* type */ | |
427 | 0, /* rightshift */ | |
428 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
429 | 16, /* bitsize */ | |
b34976b6 | 430 | FALSE, /* pc_relative */ |
5bd4f169 AM |
431 | 0, /* bitpos */ |
432 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 433 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 434 | "R_PPC64_GOT16", /* name */ |
b34976b6 | 435 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
436 | 0, /* src_mask */ |
437 | 0xffff, /* dst_mask */ | |
b34976b6 | 438 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
439 | |
440 | /* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for | |
441 | the symbol. */ | |
442 | HOWTO (R_PPC64_GOT16_LO, /* type */ | |
443 | 0, /* rightshift */ | |
444 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
445 | 16, /* bitsize */ | |
b34976b6 | 446 | FALSE, /* pc_relative */ |
5bd4f169 AM |
447 | 0, /* bitpos */ |
448 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 449 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 450 | "R_PPC64_GOT16_LO", /* name */ |
b34976b6 | 451 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
452 | 0, /* src_mask */ |
453 | 0xffff, /* dst_mask */ | |
b34976b6 | 454 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
455 | |
456 | /* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for | |
457 | the symbol. */ | |
458 | HOWTO (R_PPC64_GOT16_HI, /* type */ | |
459 | 16, /* rightshift */ | |
460 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
461 | 16, /* bitsize */ | |
b34976b6 | 462 | FALSE, /* pc_relative */ |
5bd4f169 AM |
463 | 0, /* bitpos */ |
464 | complain_overflow_dont,/* complain_on_overflow */ | |
805fc799 | 465 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 466 | "R_PPC64_GOT16_HI", /* name */ |
b34976b6 | 467 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
468 | 0, /* src_mask */ |
469 | 0xffff, /* dst_mask */ | |
b34976b6 | 470 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
471 | |
472 | /* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for | |
473 | the symbol. */ | |
474 | HOWTO (R_PPC64_GOT16_HA, /* type */ | |
475 | 16, /* rightshift */ | |
476 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
477 | 16, /* bitsize */ | |
b34976b6 | 478 | FALSE, /* pc_relative */ |
5bd4f169 AM |
479 | 0, /* bitpos */ |
480 | complain_overflow_dont,/* complain_on_overflow */ | |
805fc799 | 481 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 482 | "R_PPC64_GOT16_HA", /* name */ |
b34976b6 | 483 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
484 | 0, /* src_mask */ |
485 | 0xffff, /* dst_mask */ | |
b34976b6 | 486 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
487 | |
488 | /* This is used only by the dynamic linker. The symbol should exist | |
489 | both in the object being run and in some shared library. The | |
490 | dynamic linker copies the data addressed by the symbol from the | |
491 | shared library into the object, because the object being | |
492 | run has to have the data at some particular address. */ | |
493 | HOWTO (R_PPC64_COPY, /* type */ | |
494 | 0, /* rightshift */ | |
f5e87a1d AM |
495 | 0, /* this one is variable size */ |
496 | 0, /* bitsize */ | |
b34976b6 | 497 | FALSE, /* pc_relative */ |
5bd4f169 | 498 | 0, /* bitpos */ |
f5e87a1d AM |
499 | complain_overflow_dont, /* complain_on_overflow */ |
500 | ppc64_elf_unhandled_reloc, /* special_function */ | |
5bd4f169 | 501 | "R_PPC64_COPY", /* name */ |
b34976b6 | 502 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
503 | 0, /* src_mask */ |
504 | 0, /* dst_mask */ | |
b34976b6 | 505 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
506 | |
507 | /* Like R_PPC64_ADDR64, but used when setting global offset table | |
508 | entries. */ | |
509 | HOWTO (R_PPC64_GLOB_DAT, /* type */ | |
510 | 0, /* rightshift */ | |
511 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
512 | 64, /* bitsize */ | |
b34976b6 | 513 | FALSE, /* pc_relative */ |
5bd4f169 AM |
514 | 0, /* bitpos */ |
515 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 516 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 517 | "R_PPC64_GLOB_DAT", /* name */ |
b34976b6 | 518 | FALSE, /* partial_inplace */ |
5bd4f169 | 519 | 0, /* src_mask */ |
f5e87a1d | 520 | ONES (64), /* dst_mask */ |
b34976b6 | 521 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
522 | |
523 | /* Created by the link editor. Marks a procedure linkage table | |
524 | entry for a symbol. */ | |
525 | HOWTO (R_PPC64_JMP_SLOT, /* type */ | |
526 | 0, /* rightshift */ | |
527 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
528 | 0, /* bitsize */ | |
b34976b6 | 529 | FALSE, /* pc_relative */ |
5bd4f169 AM |
530 | 0, /* bitpos */ |
531 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 532 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 533 | "R_PPC64_JMP_SLOT", /* name */ |
b34976b6 | 534 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
535 | 0, /* src_mask */ |
536 | 0, /* dst_mask */ | |
b34976b6 | 537 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
538 | |
539 | /* Used only by the dynamic linker. When the object is run, this | |
540 | doubleword64 is set to the load address of the object, plus the | |
541 | addend. */ | |
542 | HOWTO (R_PPC64_RELATIVE, /* type */ | |
543 | 0, /* rightshift */ | |
544 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
545 | 64, /* bitsize */ | |
b34976b6 | 546 | FALSE, /* pc_relative */ |
5bd4f169 AM |
547 | 0, /* bitpos */ |
548 | complain_overflow_dont, /* complain_on_overflow */ | |
549 | bfd_elf_generic_reloc, /* special_function */ | |
550 | "R_PPC64_RELATIVE", /* name */ | |
b34976b6 | 551 | FALSE, /* partial_inplace */ |
5bd4f169 | 552 | 0, /* src_mask */ |
f5e87a1d | 553 | ONES (64), /* dst_mask */ |
b34976b6 | 554 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
555 | |
556 | /* Like R_PPC64_ADDR32, but may be unaligned. */ | |
557 | HOWTO (R_PPC64_UADDR32, /* type */ | |
558 | 0, /* rightshift */ | |
559 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
560 | 32, /* 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_UADDR32", /* name */ | |
b34976b6 | 566 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
567 | 0, /* src_mask */ |
568 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 569 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
570 | |
571 | /* Like R_PPC64_ADDR16, but may be unaligned. */ | |
572 | HOWTO (R_PPC64_UADDR16, /* type */ | |
573 | 0, /* rightshift */ | |
574 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
575 | 16, /* bitsize */ | |
b34976b6 | 576 | FALSE, /* pc_relative */ |
5bd4f169 AM |
577 | 0, /* bitpos */ |
578 | complain_overflow_bitfield, /* complain_on_overflow */ | |
579 | bfd_elf_generic_reloc, /* special_function */ | |
580 | "R_PPC64_UADDR16", /* name */ | |
b34976b6 | 581 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
582 | 0, /* src_mask */ |
583 | 0xffff, /* dst_mask */ | |
b34976b6 | 584 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
585 | |
586 | /* 32-bit PC relative. */ | |
587 | HOWTO (R_PPC64_REL32, /* type */ | |
588 | 0, /* rightshift */ | |
589 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
590 | 32, /* bitsize */ | |
b34976b6 | 591 | TRUE, /* pc_relative */ |
5bd4f169 | 592 | 0, /* bitpos */ |
cedb70c5 | 593 | /* FIXME: Verify. Was complain_overflow_bitfield. */ |
5bd4f169 AM |
594 | complain_overflow_signed, /* complain_on_overflow */ |
595 | bfd_elf_generic_reloc, /* special_function */ | |
596 | "R_PPC64_REL32", /* name */ | |
b34976b6 | 597 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
598 | 0, /* src_mask */ |
599 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 600 | TRUE), /* pcrel_offset */ |
5bd4f169 | 601 | |
10ed1bba | 602 | /* 32-bit relocation to the symbol's procedure linkage table. */ |
5bd4f169 AM |
603 | HOWTO (R_PPC64_PLT32, /* type */ |
604 | 0, /* rightshift */ | |
605 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
606 | 32, /* bitsize */ | |
b34976b6 | 607 | FALSE, /* pc_relative */ |
5bd4f169 AM |
608 | 0, /* bitpos */ |
609 | complain_overflow_bitfield, /* complain_on_overflow */ | |
805fc799 | 610 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 611 | "R_PPC64_PLT32", /* name */ |
b34976b6 | 612 | FALSE, /* partial_inplace */ |
5bd4f169 | 613 | 0, /* src_mask */ |
f5e87a1d | 614 | 0xffffffff, /* dst_mask */ |
b34976b6 | 615 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
616 | |
617 | /* 32-bit PC relative relocation to the symbol's procedure linkage table. | |
618 | FIXME: R_PPC64_PLTREL32 not supported. */ | |
619 | HOWTO (R_PPC64_PLTREL32, /* type */ | |
620 | 0, /* rightshift */ | |
621 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
622 | 32, /* bitsize */ | |
b34976b6 | 623 | TRUE, /* pc_relative */ |
5bd4f169 AM |
624 | 0, /* bitpos */ |
625 | complain_overflow_signed, /* complain_on_overflow */ | |
626 | bfd_elf_generic_reloc, /* special_function */ | |
627 | "R_PPC64_PLTREL32", /* name */ | |
b34976b6 | 628 | FALSE, /* partial_inplace */ |
5bd4f169 | 629 | 0, /* src_mask */ |
f5e87a1d | 630 | 0xffffffff, /* dst_mask */ |
b34976b6 | 631 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
632 | |
633 | /* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for | |
634 | the symbol. */ | |
635 | HOWTO (R_PPC64_PLT16_LO, /* type */ | |
636 | 0, /* rightshift */ | |
637 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
638 | 16, /* bitsize */ | |
b34976b6 | 639 | FALSE, /* pc_relative */ |
5bd4f169 AM |
640 | 0, /* bitpos */ |
641 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 642 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 643 | "R_PPC64_PLT16_LO", /* name */ |
b34976b6 | 644 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
645 | 0, /* src_mask */ |
646 | 0xffff, /* dst_mask */ | |
b34976b6 | 647 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
648 | |
649 | /* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for | |
650 | the symbol. */ | |
651 | HOWTO (R_PPC64_PLT16_HI, /* type */ | |
652 | 16, /* rightshift */ | |
653 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
654 | 16, /* bitsize */ | |
b34976b6 | 655 | FALSE, /* pc_relative */ |
5bd4f169 AM |
656 | 0, /* bitpos */ |
657 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 658 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 659 | "R_PPC64_PLT16_HI", /* name */ |
b34976b6 | 660 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
661 | 0, /* src_mask */ |
662 | 0xffff, /* dst_mask */ | |
b34976b6 | 663 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
664 | |
665 | /* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for | |
666 | the symbol. */ | |
667 | HOWTO (R_PPC64_PLT16_HA, /* type */ | |
668 | 16, /* rightshift */ | |
669 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
670 | 16, /* bitsize */ | |
b34976b6 | 671 | FALSE, /* pc_relative */ |
5bd4f169 AM |
672 | 0, /* bitpos */ |
673 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 674 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 675 | "R_PPC64_PLT16_HA", /* name */ |
b34976b6 | 676 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
677 | 0, /* src_mask */ |
678 | 0xffff, /* dst_mask */ | |
b34976b6 | 679 | FALSE), /* pcrel_offset */ |
5bd4f169 | 680 | |
c061c2d8 | 681 | /* 16-bit section relative relocation. */ |
5bd4f169 AM |
682 | HOWTO (R_PPC64_SECTOFF, /* type */ |
683 | 0, /* rightshift */ | |
c061c2d8 AM |
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_bitfield, /* complain_on_overflow */ | |
805fc799 | 689 | ppc64_elf_sectoff_reloc, /* special_function */ |
5bd4f169 | 690 | "R_PPC64_SECTOFF", /* name */ |
b34976b6 | 691 | FALSE, /* partial_inplace */ |
5bd4f169 | 692 | 0, /* src_mask */ |
c061c2d8 | 693 | 0xffff, /* dst_mask */ |
b34976b6 | 694 | FALSE), /* pcrel_offset */ |
5bd4f169 | 695 | |
c061c2d8 | 696 | /* Like R_PPC64_SECTOFF, but no overflow warning. */ |
5bd4f169 AM |
697 | HOWTO (R_PPC64_SECTOFF_LO, /* type */ |
698 | 0, /* 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_LO", /* 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 section relative relocation. */ | |
712 | HOWTO (R_PPC64_SECTOFF_HI, /* 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_reloc, /* special_function */ |
5bd4f169 | 720 | "R_PPC64_SECTOFF_HI", /* name */ |
b34976b6 | 721 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
722 | 0, /* src_mask */ |
723 | 0xffff, /* dst_mask */ | |
b34976b6 | 724 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
725 | |
726 | /* 16-bit upper half adjusted section relative relocation. */ | |
727 | HOWTO (R_PPC64_SECTOFF_HA, /* type */ | |
728 | 16, /* rightshift */ | |
729 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
730 | 16, /* bitsize */ | |
b34976b6 | 731 | FALSE, /* pc_relative */ |
5bd4f169 AM |
732 | 0, /* bitpos */ |
733 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 734 | ppc64_elf_sectoff_ha_reloc, /* special_function */ |
5bd4f169 | 735 | "R_PPC64_SECTOFF_HA", /* name */ |
b34976b6 | 736 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
737 | 0, /* src_mask */ |
738 | 0xffff, /* dst_mask */ | |
b34976b6 | 739 | FALSE), /* pcrel_offset */ |
5bd4f169 | 740 | |
04c9666a AM |
741 | /* Like R_PPC64_REL24 without touching the two least significant bits. */ |
742 | HOWTO (R_PPC64_REL30, /* type */ | |
5bd4f169 AM |
743 | 2, /* rightshift */ |
744 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
745 | 30, /* bitsize */ | |
b34976b6 | 746 | TRUE, /* pc_relative */ |
5bd4f169 AM |
747 | 0, /* bitpos */ |
748 | complain_overflow_dont, /* complain_on_overflow */ | |
749 | bfd_elf_generic_reloc, /* special_function */ | |
04c9666a | 750 | "R_PPC64_REL30", /* name */ |
b34976b6 | 751 | FALSE, /* partial_inplace */ |
d006db6c | 752 | 0, /* src_mask */ |
5bd4f169 | 753 | 0xfffffffc, /* dst_mask */ |
b34976b6 | 754 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
755 | |
756 | /* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */ | |
757 | ||
758 | /* A standard 64-bit relocation. */ | |
759 | HOWTO (R_PPC64_ADDR64, /* type */ | |
760 | 0, /* rightshift */ | |
761 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
762 | 64, /* 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_ADDR64", /* name */ | |
b34976b6 | 768 | FALSE, /* partial_inplace */ |
5bd4f169 | 769 | 0, /* src_mask */ |
f5e87a1d | 770 | ONES (64), /* dst_mask */ |
b34976b6 | 771 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
772 | |
773 | /* The bits 32-47 of an address. */ | |
774 | HOWTO (R_PPC64_ADDR16_HIGHER, /* type */ | |
775 | 32, /* rightshift */ | |
776 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
777 | 16, /* bitsize */ | |
b34976b6 | 778 | FALSE, /* pc_relative */ |
5bd4f169 AM |
779 | 0, /* bitpos */ |
780 | complain_overflow_dont, /* complain_on_overflow */ | |
781 | bfd_elf_generic_reloc, /* special_function */ | |
782 | "R_PPC64_ADDR16_HIGHER", /* name */ | |
b34976b6 | 783 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
784 | 0, /* src_mask */ |
785 | 0xffff, /* dst_mask */ | |
b34976b6 | 786 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
787 | |
788 | /* The bits 32-47 of an address, plus 1 if the contents of the low | |
789 | 16 bits, treated as a signed number, is negative. */ | |
790 | HOWTO (R_PPC64_ADDR16_HIGHERA, /* type */ | |
791 | 32, /* rightshift */ | |
792 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
793 | 16, /* bitsize */ | |
b34976b6 | 794 | FALSE, /* pc_relative */ |
5bd4f169 AM |
795 | 0, /* bitpos */ |
796 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 797 | ppc64_elf_ha_reloc, /* special_function */ |
5bd4f169 | 798 | "R_PPC64_ADDR16_HIGHERA", /* 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. */ | |
805 | HOWTO (R_PPC64_ADDR16_HIGHEST,/* type */ | |
806 | 48, /* rightshift */ | |
807 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
808 | 16, /* bitsize */ | |
b34976b6 | 809 | FALSE, /* pc_relative */ |
5bd4f169 AM |
810 | 0, /* bitpos */ |
811 | complain_overflow_dont, /* complain_on_overflow */ | |
812 | bfd_elf_generic_reloc, /* special_function */ | |
813 | "R_PPC64_ADDR16_HIGHEST", /* name */ | |
b34976b6 | 814 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
815 | 0, /* src_mask */ |
816 | 0xffff, /* dst_mask */ | |
b34976b6 | 817 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
818 | |
819 | /* The bits 48-63 of an address, plus 1 if the contents of the low | |
820 | 16 bits, treated as a signed number, is negative. */ | |
821 | HOWTO (R_PPC64_ADDR16_HIGHESTA,/* type */ | |
822 | 48, /* rightshift */ | |
823 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
824 | 16, /* bitsize */ | |
b34976b6 | 825 | FALSE, /* pc_relative */ |
5bd4f169 AM |
826 | 0, /* bitpos */ |
827 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 828 | ppc64_elf_ha_reloc, /* special_function */ |
5bd4f169 | 829 | "R_PPC64_ADDR16_HIGHESTA", /* name */ |
b34976b6 | 830 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
831 | 0, /* src_mask */ |
832 | 0xffff, /* dst_mask */ | |
b34976b6 | 833 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
834 | |
835 | /* Like ADDR64, but may be unaligned. */ | |
836 | HOWTO (R_PPC64_UADDR64, /* type */ | |
837 | 0, /* rightshift */ | |
838 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
839 | 64, /* bitsize */ | |
b34976b6 | 840 | FALSE, /* pc_relative */ |
5bd4f169 AM |
841 | 0, /* bitpos */ |
842 | complain_overflow_dont, /* complain_on_overflow */ | |
843 | bfd_elf_generic_reloc, /* special_function */ | |
844 | "R_PPC64_UADDR64", /* name */ | |
b34976b6 | 845 | FALSE, /* partial_inplace */ |
5bd4f169 | 846 | 0, /* src_mask */ |
f5e87a1d | 847 | ONES (64), /* dst_mask */ |
b34976b6 | 848 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
849 | |
850 | /* 64-bit relative relocation. */ | |
851 | HOWTO (R_PPC64_REL64, /* type */ | |
852 | 0, /* rightshift */ | |
853 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
854 | 64, /* bitsize */ | |
b34976b6 | 855 | TRUE, /* pc_relative */ |
5bd4f169 AM |
856 | 0, /* bitpos */ |
857 | complain_overflow_dont, /* complain_on_overflow */ | |
858 | bfd_elf_generic_reloc, /* special_function */ | |
859 | "R_PPC64_REL64", /* name */ | |
b34976b6 | 860 | FALSE, /* partial_inplace */ |
5bd4f169 | 861 | 0, /* src_mask */ |
f5e87a1d | 862 | ONES (64), /* dst_mask */ |
b34976b6 | 863 | TRUE), /* pcrel_offset */ |
5bd4f169 | 864 | |
cedb70c5 | 865 | /* 64-bit relocation to the symbol's procedure linkage table. */ |
5bd4f169 AM |
866 | HOWTO (R_PPC64_PLT64, /* type */ |
867 | 0, /* rightshift */ | |
868 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
869 | 64, /* bitsize */ | |
b34976b6 | 870 | FALSE, /* pc_relative */ |
5bd4f169 AM |
871 | 0, /* bitpos */ |
872 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 873 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 874 | "R_PPC64_PLT64", /* name */ |
b34976b6 | 875 | FALSE, /* partial_inplace */ |
5bd4f169 | 876 | 0, /* src_mask */ |
f5e87a1d | 877 | ONES (64), /* dst_mask */ |
b34976b6 | 878 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
879 | |
880 | /* 64-bit PC relative relocation to the symbol's procedure linkage | |
881 | table. */ | |
882 | /* FIXME: R_PPC64_PLTREL64 not supported. */ | |
883 | HOWTO (R_PPC64_PLTREL64, /* type */ | |
884 | 0, /* rightshift */ | |
885 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
886 | 64, /* bitsize */ | |
b34976b6 | 887 | TRUE, /* pc_relative */ |
5bd4f169 AM |
888 | 0, /* bitpos */ |
889 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 890 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 891 | "R_PPC64_PLTREL64", /* name */ |
b34976b6 | 892 | FALSE, /* partial_inplace */ |
5bd4f169 | 893 | 0, /* src_mask */ |
f5e87a1d | 894 | ONES (64), /* dst_mask */ |
b34976b6 | 895 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
896 | |
897 | /* 16 bit TOC-relative relocation. */ | |
898 | ||
899 | /* R_PPC64_TOC16 47 half16* S + A - .TOC. */ | |
900 | HOWTO (R_PPC64_TOC16, /* type */ | |
901 | 0, /* rightshift */ | |
902 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
903 | 16, /* bitsize */ | |
b34976b6 | 904 | FALSE, /* pc_relative */ |
5bd4f169 AM |
905 | 0, /* bitpos */ |
906 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 907 | ppc64_elf_toc_reloc, /* special_function */ |
5bd4f169 | 908 | "R_PPC64_TOC16", /* name */ |
b34976b6 | 909 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
910 | 0, /* src_mask */ |
911 | 0xffff, /* dst_mask */ | |
b34976b6 | 912 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
913 | |
914 | /* 16 bit TOC-relative relocation without overflow. */ | |
915 | ||
916 | /* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */ | |
917 | HOWTO (R_PPC64_TOC16_LO, /* type */ | |
918 | 0, /* rightshift */ | |
919 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
920 | 16, /* bitsize */ | |
b34976b6 | 921 | FALSE, /* pc_relative */ |
5bd4f169 AM |
922 | 0, /* bitpos */ |
923 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 924 | ppc64_elf_toc_reloc, /* special_function */ |
5bd4f169 | 925 | "R_PPC64_TOC16_LO", /* name */ |
b34976b6 | 926 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
927 | 0, /* src_mask */ |
928 | 0xffff, /* dst_mask */ | |
b34976b6 | 929 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
930 | |
931 | /* 16 bit TOC-relative relocation, high 16 bits. */ | |
932 | ||
933 | /* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */ | |
934 | HOWTO (R_PPC64_TOC16_HI, /* type */ | |
935 | 16, /* rightshift */ | |
936 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
937 | 16, /* bitsize */ | |
b34976b6 | 938 | FALSE, /* pc_relative */ |
5bd4f169 AM |
939 | 0, /* bitpos */ |
940 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 941 | ppc64_elf_toc_reloc, /* special_function */ |
5bd4f169 | 942 | "R_PPC64_TOC16_HI", /* name */ |
b34976b6 | 943 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
944 | 0, /* src_mask */ |
945 | 0xffff, /* dst_mask */ | |
b34976b6 | 946 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
947 | |
948 | /* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the | |
949 | contents of the low 16 bits, treated as a signed number, is | |
950 | negative. */ | |
951 | ||
952 | /* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */ | |
953 | HOWTO (R_PPC64_TOC16_HA, /* type */ | |
954 | 16, /* rightshift */ | |
955 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
956 | 16, /* bitsize */ | |
b34976b6 | 957 | FALSE, /* pc_relative */ |
5bd4f169 AM |
958 | 0, /* bitpos */ |
959 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 960 | ppc64_elf_toc_ha_reloc, /* special_function */ |
5bd4f169 | 961 | "R_PPC64_TOC16_HA", /* name */ |
b34976b6 | 962 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
963 | 0, /* src_mask */ |
964 | 0xffff, /* dst_mask */ | |
b34976b6 | 965 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
966 | |
967 | /* 64-bit relocation; insert value of TOC base (.TOC.). */ | |
968 | ||
969 | /* R_PPC64_TOC 51 doubleword64 .TOC. */ | |
970 | HOWTO (R_PPC64_TOC, /* type */ | |
971 | 0, /* rightshift */ | |
972 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
973 | 64, /* bitsize */ | |
b34976b6 | 974 | FALSE, /* pc_relative */ |
5bd4f169 AM |
975 | 0, /* bitpos */ |
976 | complain_overflow_bitfield, /* complain_on_overflow */ | |
805fc799 | 977 | ppc64_elf_toc64_reloc, /* special_function */ |
5bd4f169 | 978 | "R_PPC64_TOC", /* name */ |
b34976b6 | 979 | FALSE, /* partial_inplace */ |
5bd4f169 | 980 | 0, /* src_mask */ |
f5e87a1d | 981 | ONES (64), /* dst_mask */ |
b34976b6 | 982 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
983 | |
984 | /* Like R_PPC64_GOT16, but also informs the link editor that the | |
985 | value to relocate may (!) refer to a PLT entry which the link | |
986 | editor (a) may replace with the symbol value. If the link editor | |
987 | is unable to fully resolve the symbol, it may (b) create a PLT | |
988 | entry and store the address to the new PLT entry in the GOT. | |
989 | This permits lazy resolution of function symbols at run time. | |
990 | The link editor may also skip all of this and just (c) emit a | |
991 | R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */ | |
992 | /* FIXME: R_PPC64_PLTGOT16 not implemented. */ | |
993 | HOWTO (R_PPC64_PLTGOT16, /* type */ | |
994 | 0, /* rightshift */ | |
995 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
996 | 16, /* bitsize */ | |
b34976b6 | 997 | FALSE, /* pc_relative */ |
5bd4f169 AM |
998 | 0, /* bitpos */ |
999 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 1000 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb AM |
1001 | "R_PPC64_PLTGOT16", /* name */ |
1002 | FALSE, /* partial_inplace */ | |
1003 | 0, /* src_mask */ | |
1004 | 0xffff, /* dst_mask */ | |
1005 | FALSE), /* pcrel_offset */ | |
1006 | ||
1007 | /* Like R_PPC64_PLTGOT16, but without overflow. */ | |
1008 | /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */ | |
1009 | HOWTO (R_PPC64_PLTGOT16_LO, /* type */ | |
1010 | 0, /* rightshift */ | |
1011 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1012 | 16, /* bitsize */ | |
1013 | FALSE, /* pc_relative */ | |
1014 | 0, /* bitpos */ | |
1015 | complain_overflow_dont, /* complain_on_overflow */ | |
1016 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1017 | "R_PPC64_PLTGOT16_LO", /* name */ | |
1018 | FALSE, /* partial_inplace */ | |
1019 | 0, /* src_mask */ | |
1020 | 0xffff, /* dst_mask */ | |
1021 | FALSE), /* pcrel_offset */ | |
1022 | ||
1023 | /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */ | |
1024 | /* FIXME: R_PPC64_PLTGOT16_HI not implemented. */ | |
1025 | HOWTO (R_PPC64_PLTGOT16_HI, /* type */ | |
1026 | 16, /* rightshift */ | |
1027 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1028 | 16, /* bitsize */ | |
1029 | FALSE, /* pc_relative */ | |
1030 | 0, /* bitpos */ | |
1031 | complain_overflow_dont, /* complain_on_overflow */ | |
1032 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1033 | "R_PPC64_PLTGOT16_HI", /* name */ | |
1034 | FALSE, /* partial_inplace */ | |
1035 | 0, /* src_mask */ | |
1036 | 0xffff, /* dst_mask */ | |
1037 | FALSE), /* pcrel_offset */ | |
1038 | ||
1039 | /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus | |
1040 | 1 if the contents of the low 16 bits, treated as a signed number, | |
1041 | is negative. */ | |
1042 | /* FIXME: R_PPC64_PLTGOT16_HA not implemented. */ | |
1043 | HOWTO (R_PPC64_PLTGOT16_HA, /* type */ | |
1044 | 16, /* rightshift */ | |
1045 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1046 | 16, /* bitsize */ | |
1047 | FALSE, /* pc_relative */ | |
1048 | 0, /* bitpos */ | |
1049 | complain_overflow_dont,/* complain_on_overflow */ | |
1050 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1051 | "R_PPC64_PLTGOT16_HA", /* name */ | |
1052 | FALSE, /* partial_inplace */ | |
1053 | 0, /* src_mask */ | |
1054 | 0xffff, /* dst_mask */ | |
1055 | FALSE), /* pcrel_offset */ | |
1056 | ||
1057 | /* Like R_PPC64_ADDR16, but for instructions with a DS field. */ | |
1058 | HOWTO (R_PPC64_ADDR16_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_bitfield, /* complain_on_overflow */ | |
1065 | bfd_elf_generic_reloc, /* special_function */ | |
1066 | "R_PPC64_ADDR16_DS", /* name */ | |
1067 | FALSE, /* partial_inplace */ | |
1068 | 0, /* src_mask */ | |
1069 | 0xfffc, /* dst_mask */ | |
1070 | FALSE), /* pcrel_offset */ | |
1071 | ||
1072 | /* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */ | |
1073 | HOWTO (R_PPC64_ADDR16_LO_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_dont,/* complain_on_overflow */ | |
1080 | bfd_elf_generic_reloc, /* special_function */ | |
1081 | "R_PPC64_ADDR16_LO_DS",/* name */ | |
1082 | FALSE, /* partial_inplace */ | |
1083 | 0, /* src_mask */ | |
1084 | 0xfffc, /* dst_mask */ | |
1085 | FALSE), /* pcrel_offset */ | |
1086 | ||
1087 | /* Like R_PPC64_GOT16, but for instructions with a DS field. */ | |
1088 | HOWTO (R_PPC64_GOT16_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_signed, /* complain_on_overflow */ | |
1095 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1096 | "R_PPC64_GOT16_DS", /* name */ | |
1097 | FALSE, /* partial_inplace */ | |
1098 | 0, /* src_mask */ | |
1099 | 0xfffc, /* dst_mask */ | |
1100 | FALSE), /* pcrel_offset */ | |
1101 | ||
1102 | /* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */ | |
1103 | HOWTO (R_PPC64_GOT16_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_GOT16_LO_DS", /* name */ | |
1112 | FALSE, /* partial_inplace */ | |
1113 | 0, /* src_mask */ | |
1114 | 0xfffc, /* dst_mask */ | |
1115 | FALSE), /* pcrel_offset */ | |
1116 | ||
1117 | /* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */ | |
1118 | HOWTO (R_PPC64_PLT16_LO_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_dont, /* complain_on_overflow */ | |
1125 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1126 | "R_PPC64_PLT16_LO_DS", /* name */ | |
1127 | FALSE, /* partial_inplace */ | |
1128 | 0, /* src_mask */ | |
1129 | 0xfffc, /* dst_mask */ | |
1130 | FALSE), /* pcrel_offset */ | |
1131 | ||
1132 | /* Like R_PPC64_SECTOFF, but for instructions with a DS field. */ | |
1133 | HOWTO (R_PPC64_SECTOFF_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_bitfield, /* complain_on_overflow */ | |
1140 | ppc64_elf_sectoff_reloc, /* special_function */ | |
1141 | "R_PPC64_SECTOFF_DS", /* name */ | |
1142 | FALSE, /* partial_inplace */ | |
1143 | 0, /* src_mask */ | |
1144 | 0xfffc, /* dst_mask */ | |
1145 | FALSE), /* pcrel_offset */ | |
1146 | ||
1147 | /* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */ | |
1148 | HOWTO (R_PPC64_SECTOFF_LO_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_dont, /* complain_on_overflow */ | |
1155 | ppc64_elf_sectoff_reloc, /* special_function */ | |
1156 | "R_PPC64_SECTOFF_LO_DS",/* name */ | |
1157 | FALSE, /* partial_inplace */ | |
1158 | 0, /* src_mask */ | |
1159 | 0xfffc, /* dst_mask */ | |
1160 | FALSE), /* pcrel_offset */ | |
1161 | ||
1162 | /* Like R_PPC64_TOC16, but for instructions with a DS field. */ | |
1163 | HOWTO (R_PPC64_TOC16_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_signed, /* complain_on_overflow */ | |
1170 | ppc64_elf_toc_reloc, /* special_function */ | |
1171 | "R_PPC64_TOC16_DS", /* name */ | |
1172 | FALSE, /* partial_inplace */ | |
1173 | 0, /* src_mask */ | |
1174 | 0xfffc, /* dst_mask */ | |
1175 | FALSE), /* pcrel_offset */ | |
1176 | ||
1177 | /* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */ | |
1178 | HOWTO (R_PPC64_TOC16_LO_DS, /* type */ | |
1179 | 0, /* rightshift */ | |
1180 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1181 | 16, /* bitsize */ | |
1182 | FALSE, /* pc_relative */ | |
1183 | 0, /* bitpos */ | |
1184 | complain_overflow_dont, /* complain_on_overflow */ | |
1185 | ppc64_elf_toc_reloc, /* special_function */ | |
1186 | "R_PPC64_TOC16_LO_DS", /* name */ | |
1187 | FALSE, /* partial_inplace */ | |
1188 | 0, /* src_mask */ | |
1189 | 0xfffc, /* dst_mask */ | |
1190 | FALSE), /* pcrel_offset */ | |
1191 | ||
1192 | /* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */ | |
1193 | /* FIXME: R_PPC64_PLTGOT16_DS not implemented. */ | |
1194 | HOWTO (R_PPC64_PLTGOT16_DS, /* type */ | |
1195 | 0, /* rightshift */ | |
1196 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1197 | 16, /* bitsize */ | |
1198 | FALSE, /* pc_relative */ | |
1199 | 0, /* bitpos */ | |
1200 | complain_overflow_signed, /* complain_on_overflow */ | |
1201 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1202 | "R_PPC64_PLTGOT16_DS", /* name */ | |
1203 | FALSE, /* partial_inplace */ | |
1204 | 0, /* src_mask */ | |
1205 | 0xfffc, /* dst_mask */ | |
1206 | FALSE), /* pcrel_offset */ | |
1207 | ||
1208 | /* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */ | |
1209 | /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */ | |
1210 | HOWTO (R_PPC64_PLTGOT16_LO_DS,/* type */ | |
1211 | 0, /* rightshift */ | |
1212 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1213 | 16, /* bitsize */ | |
1214 | FALSE, /* pc_relative */ | |
1215 | 0, /* bitpos */ | |
1216 | complain_overflow_dont, /* complain_on_overflow */ | |
1217 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1218 | "R_PPC64_PLTGOT16_LO_DS",/* name */ | |
1219 | FALSE, /* partial_inplace */ | |
1220 | 0, /* src_mask */ | |
1221 | 0xfffc, /* dst_mask */ | |
1222 | FALSE), /* pcrel_offset */ | |
1223 | ||
1224 | /* Marker reloc for TLS. */ | |
1225 | HOWTO (R_PPC64_TLS, | |
1226 | 0, /* rightshift */ | |
1227 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1228 | 32, /* bitsize */ | |
1229 | FALSE, /* pc_relative */ | |
1230 | 0, /* bitpos */ | |
1231 | complain_overflow_dont, /* complain_on_overflow */ | |
1232 | bfd_elf_generic_reloc, /* special_function */ | |
1233 | "R_PPC64_TLS", /* name */ | |
1234 | FALSE, /* partial_inplace */ | |
1235 | 0, /* src_mask */ | |
1236 | 0, /* dst_mask */ | |
1237 | FALSE), /* pcrel_offset */ | |
1238 | ||
1239 | /* Computes the load module index of the load module that contains the | |
1240 | definition of its TLS sym. */ | |
1241 | HOWTO (R_PPC64_DTPMOD64, | |
1242 | 0, /* rightshift */ | |
1243 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
1244 | 64, /* bitsize */ | |
1245 | FALSE, /* pc_relative */ | |
1246 | 0, /* bitpos */ | |
1247 | complain_overflow_dont, /* complain_on_overflow */ | |
1248 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1249 | "R_PPC64_DTPMOD64", /* name */ | |
1250 | FALSE, /* partial_inplace */ | |
1251 | 0, /* src_mask */ | |
1252 | ONES (64), /* dst_mask */ | |
1253 | FALSE), /* pcrel_offset */ | |
1254 | ||
1255 | /* Computes a dtv-relative displacement, the difference between the value | |
1256 | of sym+add and the base address of the thread-local storage block that | |
1257 | contains the definition of sym, minus 0x8000. */ | |
1258 | HOWTO (R_PPC64_DTPREL64, | |
1259 | 0, /* rightshift */ | |
1260 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
1261 | 64, /* bitsize */ | |
1262 | FALSE, /* pc_relative */ | |
1263 | 0, /* bitpos */ | |
1264 | complain_overflow_dont, /* complain_on_overflow */ | |
1265 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1266 | "R_PPC64_DTPREL64", /* name */ | |
1267 | FALSE, /* partial_inplace */ | |
1268 | 0, /* src_mask */ | |
1269 | ONES (64), /* dst_mask */ | |
1270 | FALSE), /* pcrel_offset */ | |
1271 | ||
1272 | /* A 16 bit dtprel reloc. */ | |
1273 | HOWTO (R_PPC64_DTPREL16, | |
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_signed, /* complain_on_overflow */ | |
1280 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1281 | "R_PPC64_DTPREL16", /* name */ | |
1282 | FALSE, /* partial_inplace */ | |
1283 | 0, /* src_mask */ | |
1284 | 0xffff, /* dst_mask */ | |
1285 | FALSE), /* pcrel_offset */ | |
1286 | ||
1287 | /* Like DTPREL16, but no overflow. */ | |
1288 | HOWTO (R_PPC64_DTPREL16_LO, | |
1289 | 0, /* 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_LO", /* name */ | |
1297 | FALSE, /* partial_inplace */ | |
1298 | 0, /* src_mask */ | |
1299 | 0xffff, /* dst_mask */ | |
1300 | FALSE), /* pcrel_offset */ | |
1301 | ||
1302 | /* Like DTPREL16_LO, but next higher group of 16 bits. */ | |
1303 | HOWTO (R_PPC64_DTPREL16_HI, | |
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_HI", /* name */ | |
1312 | FALSE, /* partial_inplace */ | |
1313 | 0, /* src_mask */ | |
1314 | 0xffff, /* dst_mask */ | |
1315 | FALSE), /* pcrel_offset */ | |
1316 | ||
1317 | /* Like DTPREL16_HI, but adjust for low 16 bits. */ | |
1318 | HOWTO (R_PPC64_DTPREL16_HA, | |
1319 | 16, /* 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_HA", /* name */ | |
1327 | FALSE, /* partial_inplace */ | |
1328 | 0, /* src_mask */ | |
1329 | 0xffff, /* dst_mask */ | |
1330 | FALSE), /* pcrel_offset */ | |
1331 | ||
1332 | /* Like DTPREL16_HI, but next higher group of 16 bits. */ | |
1333 | HOWTO (R_PPC64_DTPREL16_HIGHER, | |
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_HIGHER", /* name */ | |
1342 | FALSE, /* partial_inplace */ | |
1343 | 0, /* src_mask */ | |
1344 | 0xffff, /* dst_mask */ | |
1345 | FALSE), /* pcrel_offset */ | |
1346 | ||
1347 | /* Like DTPREL16_HIGHER, but adjust for low 16 bits. */ | |
1348 | HOWTO (R_PPC64_DTPREL16_HIGHERA, | |
1349 | 32, /* 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_HIGHERA", /* name */ | |
1357 | FALSE, /* partial_inplace */ | |
1358 | 0, /* src_mask */ | |
1359 | 0xffff, /* dst_mask */ | |
1360 | FALSE), /* pcrel_offset */ | |
1361 | ||
1362 | /* Like DTPREL16_HIGHER, but next higher group of 16 bits. */ | |
1363 | HOWTO (R_PPC64_DTPREL16_HIGHEST, | |
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_HIGHEST", /* name */ | |
1372 | FALSE, /* partial_inplace */ | |
1373 | 0, /* src_mask */ | |
1374 | 0xffff, /* dst_mask */ | |
1375 | FALSE), /* pcrel_offset */ | |
1376 | ||
1377 | /* Like DTPREL16_HIGHEST, but adjust for low 16 bits. */ | |
1378 | HOWTO (R_PPC64_DTPREL16_HIGHESTA, | |
1379 | 48, /* rightshift */ | |
1380 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1381 | 16, /* bitsize */ | |
1382 | FALSE, /* pc_relative */ | |
1383 | 0, /* bitpos */ | |
1384 | complain_overflow_dont, /* complain_on_overflow */ | |
1385 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1386 | "R_PPC64_DTPREL16_HIGHESTA", /* name */ | |
1387 | FALSE, /* partial_inplace */ | |
1388 | 0, /* src_mask */ | |
1389 | 0xffff, /* dst_mask */ | |
1390 | FALSE), /* pcrel_offset */ | |
1391 | ||
1392 | /* Like DTPREL16, but for insns with a DS field. */ | |
1393 | HOWTO (R_PPC64_DTPREL16_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_signed, /* complain_on_overflow */ | |
1400 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1401 | "R_PPC64_DTPREL16_DS", /* name */ | |
1402 | FALSE, /* partial_inplace */ | |
1403 | 0, /* src_mask */ | |
1404 | 0xfffc, /* dst_mask */ | |
1405 | FALSE), /* pcrel_offset */ | |
1406 | ||
1407 | /* Like DTPREL16_DS, but no overflow. */ | |
1408 | HOWTO (R_PPC64_DTPREL16_LO_DS, | |
1409 | 0, /* rightshift */ | |
1410 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1411 | 16, /* bitsize */ | |
1412 | FALSE, /* pc_relative */ | |
1413 | 0, /* bitpos */ | |
1414 | complain_overflow_dont, /* complain_on_overflow */ | |
1415 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1416 | "R_PPC64_DTPREL16_LO_DS", /* name */ | |
1417 | FALSE, /* partial_inplace */ | |
1418 | 0, /* src_mask */ | |
1419 | 0xfffc, /* dst_mask */ | |
1420 | FALSE), /* pcrel_offset */ | |
1421 | ||
1422 | /* Computes a tp-relative displacement, the difference between the value of | |
1423 | sym+add and the value of the thread pointer (r13). */ | |
1424 | HOWTO (R_PPC64_TPREL64, | |
1425 | 0, /* rightshift */ | |
1426 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
1427 | 64, /* bitsize */ | |
1428 | FALSE, /* pc_relative */ | |
1429 | 0, /* bitpos */ | |
1430 | complain_overflow_dont, /* complain_on_overflow */ | |
1431 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1432 | "R_PPC64_TPREL64", /* name */ | |
1433 | FALSE, /* partial_inplace */ | |
1434 | 0, /* src_mask */ | |
1435 | ONES (64), /* dst_mask */ | |
1436 | FALSE), /* pcrel_offset */ | |
1437 | ||
1438 | /* A 16 bit tprel reloc. */ | |
1439 | HOWTO (R_PPC64_TPREL16, | |
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_signed, /* complain_on_overflow */ | |
1446 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1447 | "R_PPC64_TPREL16", /* name */ | |
1448 | FALSE, /* partial_inplace */ | |
1449 | 0, /* src_mask */ | |
1450 | 0xffff, /* dst_mask */ | |
1451 | FALSE), /* pcrel_offset */ | |
1452 | ||
1453 | /* Like TPREL16, but no overflow. */ | |
1454 | HOWTO (R_PPC64_TPREL16_LO, | |
1455 | 0, /* 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_LO", /* name */ | |
1463 | FALSE, /* partial_inplace */ | |
1464 | 0, /* src_mask */ | |
1465 | 0xffff, /* dst_mask */ | |
1466 | FALSE), /* pcrel_offset */ | |
1467 | ||
1468 | /* Like TPREL16_LO, but next higher group of 16 bits. */ | |
1469 | HOWTO (R_PPC64_TPREL16_HI, | |
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_HI", /* name */ | |
1478 | FALSE, /* partial_inplace */ | |
1479 | 0, /* src_mask */ | |
1480 | 0xffff, /* dst_mask */ | |
1481 | FALSE), /* pcrel_offset */ | |
1482 | ||
1483 | /* Like TPREL16_HI, but adjust for low 16 bits. */ | |
1484 | HOWTO (R_PPC64_TPREL16_HA, | |
1485 | 16, /* 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_HA", /* name */ | |
1493 | FALSE, /* partial_inplace */ | |
1494 | 0, /* src_mask */ | |
1495 | 0xffff, /* dst_mask */ | |
1496 | FALSE), /* pcrel_offset */ | |
1497 | ||
1498 | /* Like TPREL16_HI, but next higher group of 16 bits. */ | |
1499 | HOWTO (R_PPC64_TPREL16_HIGHER, | |
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_HIGHER", /* name */ | |
1508 | FALSE, /* partial_inplace */ | |
1509 | 0, /* src_mask */ | |
1510 | 0xffff, /* dst_mask */ | |
1511 | FALSE), /* pcrel_offset */ | |
1512 | ||
1513 | /* Like TPREL16_HIGHER, but adjust for low 16 bits. */ | |
1514 | HOWTO (R_PPC64_TPREL16_HIGHERA, | |
1515 | 32, /* 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_HIGHERA", /* name */ | |
1523 | FALSE, /* partial_inplace */ | |
1524 | 0, /* src_mask */ | |
1525 | 0xffff, /* dst_mask */ | |
1526 | FALSE), /* pcrel_offset */ | |
1527 | ||
1528 | /* Like TPREL16_HIGHER, but next higher group of 16 bits. */ | |
1529 | HOWTO (R_PPC64_TPREL16_HIGHEST, | |
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_HIGHEST", /* name */ | |
1538 | FALSE, /* partial_inplace */ | |
1539 | 0, /* src_mask */ | |
1540 | 0xffff, /* dst_mask */ | |
1541 | FALSE), /* pcrel_offset */ | |
1542 | ||
1543 | /* Like TPREL16_HIGHEST, but adjust for low 16 bits. */ | |
1544 | HOWTO (R_PPC64_TPREL16_HIGHESTA, | |
1545 | 48, /* rightshift */ | |
1546 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1547 | 16, /* bitsize */ | |
1548 | FALSE, /* pc_relative */ | |
1549 | 0, /* bitpos */ | |
1550 | complain_overflow_dont, /* complain_on_overflow */ | |
1551 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1552 | "R_PPC64_TPREL16_HIGHESTA", /* name */ | |
1553 | FALSE, /* partial_inplace */ | |
1554 | 0, /* src_mask */ | |
1555 | 0xffff, /* dst_mask */ | |
1556 | FALSE), /* pcrel_offset */ | |
1557 | ||
1558 | /* Like TPREL16, but for insns with a DS field. */ | |
1559 | HOWTO (R_PPC64_TPREL16_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_signed, /* complain_on_overflow */ | |
1566 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1567 | "R_PPC64_TPREL16_DS", /* name */ | |
1568 | FALSE, /* partial_inplace */ | |
1569 | 0, /* src_mask */ | |
1570 | 0xfffc, /* dst_mask */ | |
1571 | FALSE), /* pcrel_offset */ | |
1572 | ||
1573 | /* Like TPREL16_DS, but no overflow. */ | |
1574 | HOWTO (R_PPC64_TPREL16_LO_DS, | |
1575 | 0, /* rightshift */ | |
1576 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1577 | 16, /* bitsize */ | |
1578 | FALSE, /* pc_relative */ | |
1579 | 0, /* bitpos */ | |
1580 | complain_overflow_dont, /* complain_on_overflow */ | |
1581 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1582 | "R_PPC64_TPREL16_LO_DS", /* name */ | |
1583 | FALSE, /* partial_inplace */ | |
1584 | 0, /* src_mask */ | |
1585 | 0xfffc, /* dst_mask */ | |
1586 | FALSE), /* pcrel_offset */ | |
1587 | ||
1588 | /* Allocates two contiguous entries in the GOT to hold a tls_index structure, | |
1589 | with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset | |
1590 | to the first entry relative to the TOC base (r2). */ | |
1591 | HOWTO (R_PPC64_GOT_TLSGD16, | |
1592 | 0, /* rightshift */ | |
1593 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1594 | 16, /* bitsize */ | |
1595 | FALSE, /* pc_relative */ | |
1596 | 0, /* bitpos */ | |
1597 | complain_overflow_signed, /* complain_on_overflow */ | |
1598 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1599 | "R_PPC64_GOT_TLSGD16", /* 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, but no overflow. */ |
1606 | HOWTO (R_PPC64_GOT_TLSGD16_LO, | |
5bd4f169 AM |
1607 | 0, /* 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_LO", /* 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_LO, but next higher group of 16 bits. */ |
1621 | HOWTO (R_PPC64_GOT_TLSGD16_HI, | |
5bd4f169 AM |
1622 | 16, /* rightshift */ |
1623 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1624 | 16, /* bitsize */ | |
b34976b6 | 1625 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1626 | 0, /* bitpos */ |
1627 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 1628 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1629 | "R_PPC64_GOT_TLSGD16_HI", /* 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 | /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */ |
1636 | HOWTO (R_PPC64_GOT_TLSGD16_HA, | |
5bd4f169 AM |
1637 | 16, /* rightshift */ |
1638 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1639 | 16, /* bitsize */ | |
b34976b6 | 1640 | FALSE, /* pc_relative */ |
5bd4f169 | 1641 | 0, /* bitpos */ |
411e1bfb | 1642 | complain_overflow_dont, /* complain_on_overflow */ |
805fc799 | 1643 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1644 | "R_PPC64_GOT_TLSGD16_HA", /* name */ |
b34976b6 | 1645 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1646 | 0, /* src_mask */ |
1647 | 0xffff, /* dst_mask */ | |
b34976b6 | 1648 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1649 | |
411e1bfb AM |
1650 | /* Allocates two contiguous entries in the GOT to hold a tls_index structure, |
1651 | with values (sym+add)@dtpmod and zero, and computes the offset to the | |
1652 | first entry relative to the TOC base (r2). */ | |
1653 | HOWTO (R_PPC64_GOT_TLSLD16, | |
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_signed, /* complain_on_overflow */ |
1660 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1661 | "R_PPC64_GOT_TLSLD16", /* 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, but no overflow. */ |
1668 | HOWTO (R_PPC64_GOT_TLSLD16_LO, | |
5bd4f169 AM |
1669 | 0, /* rightshift */ |
1670 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1671 | 16, /* bitsize */ | |
b34976b6 | 1672 | FALSE, /* pc_relative */ |
5bd4f169 | 1673 | 0, /* bitpos */ |
411e1bfb AM |
1674 | complain_overflow_dont, /* complain_on_overflow */ |
1675 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1676 | "R_PPC64_GOT_TLSLD16_LO", /* 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_LO, but next higher group of 16 bits. */ |
1683 | HOWTO (R_PPC64_GOT_TLSLD16_HI, | |
1684 | 16, /* rightshift */ | |
5bd4f169 AM |
1685 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1686 | 16, /* bitsize */ | |
b34976b6 | 1687 | FALSE, /* pc_relative */ |
5bd4f169 | 1688 | 0, /* bitpos */ |
411e1bfb | 1689 | complain_overflow_dont, /* complain_on_overflow */ |
805fc799 | 1690 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1691 | "R_PPC64_GOT_TLSLD16_HI", /* 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 | /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */ |
1698 | HOWTO (R_PPC64_GOT_TLSLD16_HA, | |
1699 | 16, /* rightshift */ | |
5bd4f169 AM |
1700 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1701 | 16, /* bitsize */ | |
b34976b6 | 1702 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1703 | 0, /* bitpos */ |
1704 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 1705 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1706 | "R_PPC64_GOT_TLSLD16_HA", /* name */ |
b34976b6 | 1707 | FALSE, /* partial_inplace */ |
d006db6c | 1708 | 0, /* src_mask */ |
411e1bfb | 1709 | 0xffff, /* dst_mask */ |
b34976b6 | 1710 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1711 | |
411e1bfb AM |
1712 | /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes |
1713 | the offset to the entry relative to the TOC base (r2). */ | |
1714 | HOWTO (R_PPC64_GOT_DTPREL16_DS, | |
5bd4f169 AM |
1715 | 0, /* rightshift */ |
1716 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1717 | 16, /* bitsize */ | |
b34976b6 | 1718 | FALSE, /* pc_relative */ |
5bd4f169 | 1719 | 0, /* bitpos */ |
411e1bfb | 1720 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 1721 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1722 | "R_PPC64_GOT_DTPREL16_DS", /* name */ |
b34976b6 | 1723 | FALSE, /* partial_inplace */ |
d006db6c | 1724 | 0, /* src_mask */ |
5bd4f169 | 1725 | 0xfffc, /* dst_mask */ |
b34976b6 | 1726 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1727 | |
411e1bfb AM |
1728 | /* Like GOT_DTPREL16_DS, but no overflow. */ |
1729 | HOWTO (R_PPC64_GOT_DTPREL16_LO_DS, | |
5bd4f169 | 1730 | 0, /* rightshift */ |
c061c2d8 AM |
1731 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1732 | 16, /* bitsize */ | |
b34976b6 | 1733 | FALSE, /* pc_relative */ |
5bd4f169 | 1734 | 0, /* bitpos */ |
411e1bfb AM |
1735 | complain_overflow_dont, /* complain_on_overflow */ |
1736 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1737 | "R_PPC64_GOT_DTPREL16_LO_DS", /* name */ | |
b34976b6 | 1738 | FALSE, /* partial_inplace */ |
d006db6c | 1739 | 0, /* src_mask */ |
c061c2d8 | 1740 | 0xfffc, /* dst_mask */ |
b34976b6 | 1741 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1742 | |
411e1bfb AM |
1743 | /* Like GOT_DTPREL16_LO_DS, but next higher group of 16 bits. */ |
1744 | HOWTO (R_PPC64_GOT_DTPREL16_HI, | |
1745 | 16, /* rightshift */ | |
5bd4f169 AM |
1746 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1747 | 16, /* bitsize */ | |
b34976b6 | 1748 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1749 | 0, /* bitpos */ |
1750 | complain_overflow_dont, /* complain_on_overflow */ | |
411e1bfb AM |
1751 | ppc64_elf_unhandled_reloc, /* special_function */ |
1752 | "R_PPC64_GOT_DTPREL16_HI", /* name */ | |
b34976b6 | 1753 | FALSE, /* partial_inplace */ |
d006db6c | 1754 | 0, /* src_mask */ |
411e1bfb | 1755 | 0xffff, /* dst_mask */ |
b34976b6 | 1756 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1757 | |
411e1bfb AM |
1758 | /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */ |
1759 | HOWTO (R_PPC64_GOT_DTPREL16_HA, | |
1760 | 16, /* rightshift */ | |
1761 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1762 | 16, /* bitsize */ | |
1763 | FALSE, /* pc_relative */ | |
1764 | 0, /* bitpos */ | |
1765 | complain_overflow_dont, /* complain_on_overflow */ | |
1766 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1767 | "R_PPC64_GOT_DTPREL16_HA", /* name */ | |
1768 | FALSE, /* partial_inplace */ | |
1769 | 0, /* src_mask */ | |
1770 | 0xffff, /* dst_mask */ | |
1771 | FALSE), /* pcrel_offset */ | |
1772 | ||
1773 | /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the | |
1774 | offset to the entry relative to the TOC base (r2). */ | |
1775 | HOWTO (R_PPC64_GOT_TPREL16_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_signed, /* complain_on_overflow */ | |
411e1bfb AM |
1782 | ppc64_elf_unhandled_reloc, /* special_function */ |
1783 | "R_PPC64_GOT_TPREL16_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_DS, but no overflow. */ |
1790 | HOWTO (R_PPC64_GOT_TPREL16_LO_DS, | |
5bd4f169 AM |
1791 | 0, /* rightshift */ |
1792 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1793 | 16, /* bitsize */ | |
b34976b6 | 1794 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1795 | 0, /* bitpos */ |
1796 | complain_overflow_dont, /* complain_on_overflow */ | |
411e1bfb AM |
1797 | ppc64_elf_unhandled_reloc, /* special_function */ |
1798 | "R_PPC64_GOT_TPREL16_LO_DS", /* name */ | |
b34976b6 | 1799 | FALSE, /* partial_inplace */ |
d006db6c | 1800 | 0, /* src_mask */ |
ad8e1ba5 | 1801 | 0xfffc, /* dst_mask */ |
b34976b6 | 1802 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1803 | |
411e1bfb AM |
1804 | /* Like GOT_TPREL16_LO_DS, but next higher group of 16 bits. */ |
1805 | HOWTO (R_PPC64_GOT_TPREL16_HI, | |
1806 | 16, /* rightshift */ | |
5bd4f169 AM |
1807 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1808 | 16, /* bitsize */ | |
b34976b6 | 1809 | FALSE, /* pc_relative */ |
5bd4f169 | 1810 | 0, /* bitpos */ |
411e1bfb | 1811 | complain_overflow_dont, /* complain_on_overflow */ |
805fc799 | 1812 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1813 | "R_PPC64_GOT_TPREL16_HI", /* name */ |
b34976b6 | 1814 | FALSE, /* partial_inplace */ |
d006db6c | 1815 | 0, /* src_mask */ |
411e1bfb | 1816 | 0xffff, /* dst_mask */ |
b34976b6 | 1817 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1818 | |
411e1bfb AM |
1819 | /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */ |
1820 | HOWTO (R_PPC64_GOT_TPREL16_HA, | |
1821 | 16, /* rightshift */ | |
5bd4f169 AM |
1822 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1823 | 16, /* bitsize */ | |
b34976b6 | 1824 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1825 | 0, /* bitpos */ |
1826 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 1827 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1828 | "R_PPC64_GOT_TPREL16_HA", /* name */ |
b34976b6 | 1829 | FALSE, /* partial_inplace */ |
d006db6c | 1830 | 0, /* src_mask */ |
411e1bfb | 1831 | 0xffff, /* dst_mask */ |
b34976b6 | 1832 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
1833 | |
1834 | /* GNU extension to record C++ vtable hierarchy. */ | |
1835 | HOWTO (R_PPC64_GNU_VTINHERIT, /* 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_VTINHERIT", /* 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 | /* GNU extension to record C++ vtable member usage. */ | |
1850 | HOWTO (R_PPC64_GNU_VTENTRY, /* type */ | |
1851 | 0, /* rightshift */ | |
1852 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
1853 | 0, /* bitsize */ | |
b34976b6 | 1854 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1855 | 0, /* bitpos */ |
1856 | complain_overflow_dont, /* complain_on_overflow */ | |
1857 | NULL, /* special_function */ | |
1858 | "R_PPC64_GNU_VTENTRY", /* name */ | |
b34976b6 | 1859 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1860 | 0, /* src_mask */ |
1861 | 0, /* dst_mask */ | |
b34976b6 | 1862 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
1863 | }; |
1864 | ||
1865 | \f | |
1866 | /* Initialize the ppc64_elf_howto_table, so that linear accesses can | |
1867 | be done. */ | |
1868 | ||
1869 | static void | |
4ce794b7 | 1870 | ppc_howto_init (void) |
5bd4f169 AM |
1871 | { |
1872 | unsigned int i, type; | |
1873 | ||
1874 | for (i = 0; | |
1875 | i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]); | |
1876 | i++) | |
1877 | { | |
1878 | type = ppc64_elf_howto_raw[i].type; | |
1879 | BFD_ASSERT (type < (sizeof (ppc64_elf_howto_table) | |
1880 | / sizeof (ppc64_elf_howto_table[0]))); | |
1881 | ppc64_elf_howto_table[type] = &ppc64_elf_howto_raw[i]; | |
1882 | } | |
1883 | } | |
1884 | ||
1885 | static reloc_howto_type * | |
4ce794b7 AM |
1886 | ppc64_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, |
1887 | bfd_reloc_code_real_type code) | |
5bd4f169 | 1888 | { |
411e1bfb | 1889 | enum elf_ppc64_reloc_type r = R_PPC64_NONE; |
5bd4f169 AM |
1890 | |
1891 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) | |
1892 | /* Initialize howto table if needed. */ | |
1893 | ppc_howto_init (); | |
1894 | ||
4ce794b7 | 1895 | switch (code) |
5bd4f169 AM |
1896 | { |
1897 | default: | |
4ce794b7 | 1898 | return NULL; |
5bd4f169 | 1899 | |
411e1bfb AM |
1900 | case BFD_RELOC_NONE: r = R_PPC64_NONE; |
1901 | break; | |
1902 | case BFD_RELOC_32: r = R_PPC64_ADDR32; | |
1903 | break; | |
1904 | case BFD_RELOC_PPC_BA26: r = R_PPC64_ADDR24; | |
1905 | break; | |
1906 | case BFD_RELOC_16: r = R_PPC64_ADDR16; | |
1907 | break; | |
1908 | case BFD_RELOC_LO16: r = R_PPC64_ADDR16_LO; | |
1909 | break; | |
1910 | case BFD_RELOC_HI16: r = R_PPC64_ADDR16_HI; | |
1911 | break; | |
1912 | case BFD_RELOC_HI16_S: r = R_PPC64_ADDR16_HA; | |
5bd4f169 | 1913 | break; |
411e1bfb | 1914 | case BFD_RELOC_PPC_BA16: r = R_PPC64_ADDR14; |
5bd4f169 | 1915 | break; |
411e1bfb | 1916 | case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC64_ADDR14_BRTAKEN; |
5bd4f169 | 1917 | break; |
411e1bfb | 1918 | case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC64_ADDR14_BRNTAKEN; |
5bd4f169 | 1919 | break; |
411e1bfb | 1920 | case BFD_RELOC_PPC_B26: r = R_PPC64_REL24; |
5bd4f169 | 1921 | break; |
411e1bfb | 1922 | case BFD_RELOC_PPC_B16: r = R_PPC64_REL14; |
5bd4f169 | 1923 | break; |
411e1bfb | 1924 | case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC64_REL14_BRTAKEN; |
5bd4f169 | 1925 | break; |
411e1bfb | 1926 | case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC64_REL14_BRNTAKEN; |
5bd4f169 | 1927 | break; |
411e1bfb | 1928 | case BFD_RELOC_16_GOTOFF: r = R_PPC64_GOT16; |
5bd4f169 | 1929 | break; |
411e1bfb | 1930 | case BFD_RELOC_LO16_GOTOFF: r = R_PPC64_GOT16_LO; |
5bd4f169 | 1931 | break; |
411e1bfb | 1932 | case BFD_RELOC_HI16_GOTOFF: r = R_PPC64_GOT16_HI; |
5bd4f169 | 1933 | break; |
411e1bfb | 1934 | case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC64_GOT16_HA; |
5bd4f169 | 1935 | break; |
411e1bfb | 1936 | case BFD_RELOC_PPC_COPY: r = R_PPC64_COPY; |
5bd4f169 | 1937 | break; |
411e1bfb | 1938 | case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC64_GLOB_DAT; |
5bd4f169 | 1939 | break; |
411e1bfb | 1940 | case BFD_RELOC_32_PCREL: r = R_PPC64_REL32; |
5bd4f169 | 1941 | break; |
411e1bfb | 1942 | case BFD_RELOC_32_PLTOFF: r = R_PPC64_PLT32; |
5bd4f169 | 1943 | break; |
411e1bfb | 1944 | case BFD_RELOC_32_PLT_PCREL: r = R_PPC64_PLTREL32; |
5bd4f169 | 1945 | break; |
411e1bfb | 1946 | case BFD_RELOC_LO16_PLTOFF: r = R_PPC64_PLT16_LO; |
5bd4f169 | 1947 | break; |
411e1bfb | 1948 | case BFD_RELOC_HI16_PLTOFF: r = R_PPC64_PLT16_HI; |
5bd4f169 | 1949 | break; |
411e1bfb | 1950 | case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC64_PLT16_HA; |
5bd4f169 | 1951 | break; |
411e1bfb | 1952 | case BFD_RELOC_16_BASEREL: r = R_PPC64_SECTOFF; |
5bd4f169 | 1953 | break; |
411e1bfb | 1954 | case BFD_RELOC_LO16_BASEREL: r = R_PPC64_SECTOFF_LO; |
5bd4f169 | 1955 | break; |
411e1bfb | 1956 | case BFD_RELOC_HI16_BASEREL: r = R_PPC64_SECTOFF_HI; |
5bd4f169 | 1957 | break; |
411e1bfb | 1958 | case BFD_RELOC_HI16_S_BASEREL: r = R_PPC64_SECTOFF_HA; |
5bd4f169 | 1959 | break; |
411e1bfb | 1960 | case BFD_RELOC_CTOR: r = R_PPC64_ADDR64; |
5bd4f169 | 1961 | break; |
411e1bfb | 1962 | case BFD_RELOC_64: r = R_PPC64_ADDR64; |
5bd4f169 | 1963 | break; |
411e1bfb | 1964 | case BFD_RELOC_PPC64_HIGHER: r = R_PPC64_ADDR16_HIGHER; |
5bd4f169 | 1965 | break; |
411e1bfb | 1966 | case BFD_RELOC_PPC64_HIGHER_S: r = R_PPC64_ADDR16_HIGHERA; |
5bd4f169 | 1967 | break; |
411e1bfb | 1968 | case BFD_RELOC_PPC64_HIGHEST: r = R_PPC64_ADDR16_HIGHEST; |
5bd4f169 | 1969 | break; |
411e1bfb | 1970 | case BFD_RELOC_PPC64_HIGHEST_S: r = R_PPC64_ADDR16_HIGHESTA; |
5bd4f169 | 1971 | break; |
411e1bfb | 1972 | case BFD_RELOC_64_PCREL: r = R_PPC64_REL64; |
5bd4f169 | 1973 | break; |
411e1bfb | 1974 | case BFD_RELOC_64_PLTOFF: r = R_PPC64_PLT64; |
5bd4f169 | 1975 | break; |
411e1bfb | 1976 | case BFD_RELOC_64_PLT_PCREL: r = R_PPC64_PLTREL64; |
5bd4f169 | 1977 | break; |
411e1bfb | 1978 | case BFD_RELOC_PPC_TOC16: r = R_PPC64_TOC16; |
5bd4f169 | 1979 | break; |
411e1bfb | 1980 | case BFD_RELOC_PPC64_TOC16_LO: r = R_PPC64_TOC16_LO; |
5bd4f169 | 1981 | break; |
411e1bfb | 1982 | case BFD_RELOC_PPC64_TOC16_HI: r = R_PPC64_TOC16_HI; |
5bd4f169 | 1983 | break; |
411e1bfb | 1984 | case BFD_RELOC_PPC64_TOC16_HA: r = R_PPC64_TOC16_HA; |
5bd4f169 | 1985 | break; |
411e1bfb | 1986 | case BFD_RELOC_PPC64_TOC: r = R_PPC64_TOC; |
5bd4f169 | 1987 | break; |
411e1bfb | 1988 | case BFD_RELOC_PPC64_PLTGOT16: r = R_PPC64_PLTGOT16; |
5bd4f169 | 1989 | break; |
411e1bfb | 1990 | case BFD_RELOC_PPC64_PLTGOT16_LO: r = R_PPC64_PLTGOT16_LO; |
5bd4f169 | 1991 | break; |
411e1bfb | 1992 | case BFD_RELOC_PPC64_PLTGOT16_HI: r = R_PPC64_PLTGOT16_HI; |
5bd4f169 | 1993 | break; |
411e1bfb | 1994 | case BFD_RELOC_PPC64_PLTGOT16_HA: r = R_PPC64_PLTGOT16_HA; |
5bd4f169 | 1995 | break; |
411e1bfb | 1996 | case BFD_RELOC_PPC64_ADDR16_DS: r = R_PPC64_ADDR16_DS; |
5bd4f169 | 1997 | break; |
411e1bfb | 1998 | case BFD_RELOC_PPC64_ADDR16_LO_DS: r = R_PPC64_ADDR16_LO_DS; |
5bd4f169 | 1999 | break; |
411e1bfb | 2000 | case BFD_RELOC_PPC64_GOT16_DS: r = R_PPC64_GOT16_DS; |
5bd4f169 | 2001 | break; |
411e1bfb | 2002 | case BFD_RELOC_PPC64_GOT16_LO_DS: r = R_PPC64_GOT16_LO_DS; |
5bd4f169 | 2003 | break; |
411e1bfb | 2004 | case BFD_RELOC_PPC64_PLT16_LO_DS: r = R_PPC64_PLT16_LO_DS; |
5bd4f169 | 2005 | break; |
411e1bfb | 2006 | case BFD_RELOC_PPC64_SECTOFF_DS: r = R_PPC64_SECTOFF_DS; |
5bd4f169 | 2007 | break; |
411e1bfb | 2008 | case BFD_RELOC_PPC64_SECTOFF_LO_DS: r = R_PPC64_SECTOFF_LO_DS; |
5bd4f169 | 2009 | break; |
411e1bfb | 2010 | case BFD_RELOC_PPC64_TOC16_DS: r = R_PPC64_TOC16_DS; |
5bd4f169 | 2011 | break; |
411e1bfb | 2012 | case BFD_RELOC_PPC64_TOC16_LO_DS: r = R_PPC64_TOC16_LO_DS; |
5bd4f169 | 2013 | break; |
411e1bfb | 2014 | case BFD_RELOC_PPC64_PLTGOT16_DS: r = R_PPC64_PLTGOT16_DS; |
5bd4f169 | 2015 | break; |
411e1bfb | 2016 | case BFD_RELOC_PPC64_PLTGOT16_LO_DS: r = R_PPC64_PLTGOT16_LO_DS; |
5bd4f169 | 2017 | break; |
411e1bfb | 2018 | case BFD_RELOC_PPC_TLS: r = R_PPC64_TLS; |
5bd4f169 | 2019 | break; |
411e1bfb | 2020 | case BFD_RELOC_PPC_DTPMOD: r = R_PPC64_DTPMOD64; |
5bd4f169 | 2021 | break; |
411e1bfb | 2022 | case BFD_RELOC_PPC_TPREL16: r = R_PPC64_TPREL16; |
5bd4f169 | 2023 | break; |
411e1bfb | 2024 | case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC64_TPREL16_LO; |
5bd4f169 | 2025 | break; |
411e1bfb | 2026 | case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC64_TPREL16_HI; |
5bd4f169 | 2027 | break; |
411e1bfb | 2028 | case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC64_TPREL16_HA; |
5bd4f169 | 2029 | break; |
411e1bfb | 2030 | case BFD_RELOC_PPC_TPREL: r = R_PPC64_TPREL64; |
5bd4f169 | 2031 | break; |
411e1bfb AM |
2032 | case BFD_RELOC_PPC_DTPREL16: r = R_PPC64_DTPREL16; |
2033 | break; | |
2034 | case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC64_DTPREL16_LO; | |
2035 | break; | |
2036 | case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC64_DTPREL16_HI; | |
2037 | break; | |
2038 | case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC64_DTPREL16_HA; | |
2039 | break; | |
2040 | case BFD_RELOC_PPC_DTPREL: r = R_PPC64_DTPREL64; | |
2041 | break; | |
2042 | case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC64_GOT_TLSGD16; | |
2043 | break; | |
2044 | case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC64_GOT_TLSGD16_LO; | |
2045 | break; | |
2046 | case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC64_GOT_TLSGD16_HI; | |
2047 | break; | |
2048 | case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC64_GOT_TLSGD16_HA; | |
2049 | break; | |
2050 | case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC64_GOT_TLSLD16; | |
2051 | break; | |
2052 | case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC64_GOT_TLSLD16_LO; | |
2053 | break; | |
2054 | case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC64_GOT_TLSLD16_HI; | |
2055 | break; | |
2056 | case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC64_GOT_TLSLD16_HA; | |
2057 | break; | |
2058 | case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC64_GOT_TPREL16_DS; | |
2059 | break; | |
2060 | case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC64_GOT_TPREL16_LO_DS; | |
2061 | break; | |
2062 | case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC64_GOT_TPREL16_HI; | |
2063 | break; | |
2064 | case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC64_GOT_TPREL16_HA; | |
2065 | break; | |
2066 | case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC64_GOT_DTPREL16_DS; | |
2067 | break; | |
2068 | case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC64_GOT_DTPREL16_LO_DS; | |
2069 | break; | |
2070 | case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC64_GOT_DTPREL16_HI; | |
2071 | break; | |
2072 | case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC64_GOT_DTPREL16_HA; | |
2073 | break; | |
2074 | case BFD_RELOC_PPC64_TPREL16_DS: r = R_PPC64_TPREL16_DS; | |
2075 | break; | |
2076 | case BFD_RELOC_PPC64_TPREL16_LO_DS: r = R_PPC64_TPREL16_LO_DS; | |
2077 | break; | |
2078 | case BFD_RELOC_PPC64_TPREL16_HIGHER: r = R_PPC64_TPREL16_HIGHER; | |
2079 | break; | |
2080 | case BFD_RELOC_PPC64_TPREL16_HIGHERA: r = R_PPC64_TPREL16_HIGHERA; | |
2081 | break; | |
2082 | case BFD_RELOC_PPC64_TPREL16_HIGHEST: r = R_PPC64_TPREL16_HIGHEST; | |
2083 | break; | |
2084 | case BFD_RELOC_PPC64_TPREL16_HIGHESTA: r = R_PPC64_TPREL16_HIGHESTA; | |
2085 | break; | |
2086 | case BFD_RELOC_PPC64_DTPREL16_DS: r = R_PPC64_DTPREL16_DS; | |
2087 | break; | |
2088 | case BFD_RELOC_PPC64_DTPREL16_LO_DS: r = R_PPC64_DTPREL16_LO_DS; | |
2089 | break; | |
2090 | case BFD_RELOC_PPC64_DTPREL16_HIGHER: r = R_PPC64_DTPREL16_HIGHER; | |
2091 | break; | |
2092 | case BFD_RELOC_PPC64_DTPREL16_HIGHERA: r = R_PPC64_DTPREL16_HIGHERA; | |
2093 | break; | |
2094 | case BFD_RELOC_PPC64_DTPREL16_HIGHEST: r = R_PPC64_DTPREL16_HIGHEST; | |
2095 | break; | |
2096 | case BFD_RELOC_PPC64_DTPREL16_HIGHESTA: r = R_PPC64_DTPREL16_HIGHESTA; | |
2097 | break; | |
2098 | case BFD_RELOC_VTABLE_INHERIT: r = R_PPC64_GNU_VTINHERIT; | |
2099 | break; | |
2100 | case BFD_RELOC_VTABLE_ENTRY: r = R_PPC64_GNU_VTENTRY; | |
5bd4f169 AM |
2101 | break; |
2102 | } | |
2103 | ||
4ce794b7 | 2104 | return ppc64_elf_howto_table[r]; |
5bd4f169 AM |
2105 | }; |
2106 | ||
2107 | /* Set the howto pointer for a PowerPC ELF reloc. */ | |
2108 | ||
2109 | static void | |
4ce794b7 AM |
2110 | ppc64_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr, |
2111 | Elf_Internal_Rela *dst) | |
5bd4f169 | 2112 | { |
65f38f15 AM |
2113 | unsigned int type; |
2114 | ||
ef60b7ff | 2115 | /* Initialize howto table if needed. */ |
5bd4f169 | 2116 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) |
5bd4f169 AM |
2117 | ppc_howto_init (); |
2118 | ||
65f38f15 AM |
2119 | type = ELF64_R_TYPE (dst->r_info); |
2120 | BFD_ASSERT (type < (sizeof (ppc64_elf_howto_table) | |
2121 | / sizeof (ppc64_elf_howto_table[0]))); | |
2122 | cache_ptr->howto = ppc64_elf_howto_table[type]; | |
5bd4f169 AM |
2123 | } |
2124 | ||
04c9666a | 2125 | /* Handle the R_PPC64_ADDR16_HA and similar relocs. */ |
5bd4f169 AM |
2126 | |
2127 | static bfd_reloc_status_type | |
4ce794b7 AM |
2128 | ppc64_elf_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2129 | void *data, asection *input_section, | |
2130 | bfd *output_bfd, char **error_message) | |
5bd4f169 | 2131 | { |
805fc799 AM |
2132 | /* If this is a relocatable link (output_bfd test tells us), just |
2133 | call the generic function. Any adjustment will be done at final | |
2134 | link time. */ | |
2135 | if (output_bfd != NULL) | |
cedb70c5 | 2136 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2137 | input_section, output_bfd, error_message); |
2138 | ||
2139 | /* Adjust the addend for sign extension of the low 16 bits. | |
2140 | We won't actually be using the low 16 bits, so trashing them | |
2141 | doesn't matter. */ | |
2142 | reloc_entry->addend += 0x8000; | |
2143 | return bfd_reloc_continue; | |
2144 | } | |
5bd4f169 | 2145 | |
2441e016 AM |
2146 | static bfd_reloc_status_type |
2147 | ppc64_elf_branch_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, | |
2148 | void *data, asection *input_section, | |
2149 | bfd *output_bfd, char **error_message) | |
2150 | { | |
2151 | if (output_bfd != NULL) | |
2152 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, | |
2153 | input_section, output_bfd, error_message); | |
2154 | ||
699733f6 AM |
2155 | if (strcmp (symbol->section->name, ".opd") == 0 |
2156 | && (symbol->section->owner->flags & DYNAMIC) == 0) | |
2441e016 AM |
2157 | { |
2158 | bfd_vma dest = opd_entry_value (symbol->section, | |
2159 | symbol->value + reloc_entry->addend, | |
2160 | NULL, NULL); | |
2161 | if (dest != (bfd_vma) -1) | |
2162 | reloc_entry->addend = dest - (symbol->value | |
2163 | + symbol->section->output_section->vma | |
2164 | + symbol->section->output_offset); | |
2165 | } | |
2166 | return bfd_reloc_continue; | |
2167 | } | |
2168 | ||
805fc799 | 2169 | static bfd_reloc_status_type |
4ce794b7 AM |
2170 | ppc64_elf_brtaken_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2171 | void *data, asection *input_section, | |
2172 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2173 | { |
2174 | long insn; | |
04c9666a | 2175 | enum elf_ppc64_reloc_type r_type; |
805fc799 AM |
2176 | bfd_size_type octets; |
2177 | /* Disabled until we sort out how ld should choose 'y' vs 'at'. */ | |
b34976b6 | 2178 | bfd_boolean is_power4 = FALSE; |
805fc799 AM |
2179 | |
2180 | /* If this is a relocatable link (output_bfd test tells us), just | |
2181 | call the generic function. Any adjustment will be done at final | |
2182 | link time. */ | |
5bd4f169 | 2183 | if (output_bfd != NULL) |
cedb70c5 | 2184 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2185 | input_section, output_bfd, error_message); |
2186 | ||
2187 | octets = reloc_entry->address * bfd_octets_per_byte (abfd); | |
2188 | insn = bfd_get_32 (abfd, (bfd_byte *) data + octets); | |
2189 | insn &= ~(0x01 << 21); | |
4ce794b7 | 2190 | r_type = reloc_entry->howto->type; |
805fc799 AM |
2191 | if (r_type == R_PPC64_ADDR14_BRTAKEN |
2192 | || r_type == R_PPC64_REL14_BRTAKEN) | |
cedb70c5 | 2193 | insn |= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */ |
805fc799 AM |
2194 | |
2195 | if (is_power4) | |
5bd4f169 | 2196 | { |
805fc799 AM |
2197 | /* Set 'a' bit. This is 0b00010 in BO field for branch |
2198 | on CR(BI) insns (BO == 001at or 011at), and 0b01000 | |
2199 | for branch on CTR insns (BO == 1a00t or 1a01t). */ | |
2200 | if ((insn & (0x14 << 21)) == (0x04 << 21)) | |
2201 | insn |= 0x02 << 21; | |
2202 | else if ((insn & (0x14 << 21)) == (0x10 << 21)) | |
2203 | insn |= 0x08 << 21; | |
2204 | else | |
2441e016 | 2205 | goto out; |
5bd4f169 | 2206 | } |
805fc799 AM |
2207 | else |
2208 | { | |
2209 | bfd_vma target = 0; | |
2210 | bfd_vma from; | |
5bd4f169 | 2211 | |
805fc799 AM |
2212 | if (!bfd_is_com_section (symbol->section)) |
2213 | target = symbol->value; | |
2214 | target += symbol->section->output_section->vma; | |
2215 | target += symbol->section->output_offset; | |
2216 | target += reloc_entry->addend; | |
5bd4f169 | 2217 | |
805fc799 AM |
2218 | from = (reloc_entry->address |
2219 | + input_section->output_offset | |
2220 | + input_section->output_section->vma); | |
5bd4f169 | 2221 | |
805fc799 AM |
2222 | /* Invert 'y' bit if not the default. */ |
2223 | if ((bfd_signed_vma) (target - from) < 0) | |
2224 | insn ^= 0x01 << 21; | |
2225 | } | |
4ce794b7 | 2226 | bfd_put_32 (abfd, insn, (bfd_byte *) data + octets); |
2441e016 AM |
2227 | out: |
2228 | return ppc64_elf_branch_reloc (abfd, reloc_entry, symbol, data, | |
2229 | input_section, output_bfd, error_message); | |
805fc799 | 2230 | } |
5bd4f169 | 2231 | |
805fc799 | 2232 | static bfd_reloc_status_type |
4ce794b7 AM |
2233 | ppc64_elf_sectoff_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2234 | void *data, asection *input_section, | |
2235 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2236 | { |
2237 | /* If this is a relocatable link (output_bfd test tells us), just | |
2238 | call the generic function. Any adjustment will be done at final | |
2239 | link time. */ | |
2240 | if (output_bfd != NULL) | |
cedb70c5 | 2241 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 | 2242 | input_section, output_bfd, error_message); |
5bd4f169 | 2243 | |
805fc799 AM |
2244 | /* Subtract the symbol section base address. */ |
2245 | reloc_entry->addend -= symbol->section->output_section->vma; | |
5bd4f169 AM |
2246 | return bfd_reloc_continue; |
2247 | } | |
2248 | ||
805fc799 | 2249 | static bfd_reloc_status_type |
4ce794b7 AM |
2250 | ppc64_elf_sectoff_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2251 | void *data, asection *input_section, | |
2252 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2253 | { |
2254 | /* If this is a relocatable link (output_bfd test tells us), just | |
2255 | call the generic function. Any adjustment will be done at final | |
2256 | link time. */ | |
2257 | if (output_bfd != NULL) | |
cedb70c5 | 2258 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2259 | input_section, output_bfd, error_message); |
2260 | ||
2261 | /* Subtract the symbol section base address. */ | |
2262 | reloc_entry->addend -= symbol->section->output_section->vma; | |
2263 | ||
2264 | /* Adjust the addend for sign extension of the low 16 bits. */ | |
2265 | reloc_entry->addend += 0x8000; | |
2266 | return bfd_reloc_continue; | |
2267 | } | |
2268 | ||
2269 | static bfd_reloc_status_type | |
4ce794b7 AM |
2270 | ppc64_elf_toc_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2271 | void *data, asection *input_section, | |
2272 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2273 | { |
2274 | bfd_vma TOCstart; | |
2275 | ||
2276 | /* If this is a relocatable link (output_bfd test tells us), just | |
2277 | call the generic function. Any adjustment will be done at final | |
2278 | link time. */ | |
2279 | if (output_bfd != NULL) | |
cedb70c5 | 2280 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2281 | input_section, output_bfd, error_message); |
2282 | ||
2283 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
2284 | if (TOCstart == 0) | |
2285 | TOCstart = ppc64_elf_toc (input_section->output_section->owner); | |
2286 | ||
2287 | /* Subtract the TOC base address. */ | |
2288 | reloc_entry->addend -= TOCstart + TOC_BASE_OFF; | |
2289 | return bfd_reloc_continue; | |
2290 | } | |
2291 | ||
2292 | static bfd_reloc_status_type | |
4ce794b7 AM |
2293 | ppc64_elf_toc_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2294 | void *data, asection *input_section, | |
2295 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2296 | { |
2297 | bfd_vma TOCstart; | |
2298 | ||
2299 | /* If this is a relocatable link (output_bfd test tells us), just | |
2300 | call the generic function. Any adjustment will be done at final | |
2301 | link time. */ | |
2302 | if (output_bfd != NULL) | |
cedb70c5 | 2303 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2304 | input_section, output_bfd, error_message); |
2305 | ||
2306 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
2307 | if (TOCstart == 0) | |
2308 | TOCstart = ppc64_elf_toc (input_section->output_section->owner); | |
2309 | ||
2310 | /* Subtract the TOC base address. */ | |
2311 | reloc_entry->addend -= TOCstart + TOC_BASE_OFF; | |
2312 | ||
2313 | /* Adjust the addend for sign extension of the low 16 bits. */ | |
2314 | reloc_entry->addend += 0x8000; | |
2315 | return bfd_reloc_continue; | |
2316 | } | |
2317 | ||
2318 | static bfd_reloc_status_type | |
4ce794b7 AM |
2319 | ppc64_elf_toc64_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2320 | void *data, asection *input_section, | |
2321 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2322 | { |
2323 | bfd_vma TOCstart; | |
2324 | bfd_size_type octets; | |
2325 | ||
2326 | /* If this is a relocatable link (output_bfd test tells us), just | |
2327 | call the generic function. Any adjustment will be done at final | |
2328 | link time. */ | |
2329 | if (output_bfd != NULL) | |
cedb70c5 | 2330 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2331 | input_section, output_bfd, error_message); |
2332 | ||
2333 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
2334 | if (TOCstart == 0) | |
2335 | TOCstart = ppc64_elf_toc (input_section->output_section->owner); | |
2336 | ||
2337 | octets = reloc_entry->address * bfd_octets_per_byte (abfd); | |
2338 | bfd_put_64 (abfd, TOCstart + TOC_BASE_OFF, (bfd_byte *) data + octets); | |
2339 | return bfd_reloc_ok; | |
2340 | } | |
2341 | ||
2342 | static bfd_reloc_status_type | |
4ce794b7 AM |
2343 | ppc64_elf_unhandled_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2344 | void *data, asection *input_section, | |
2345 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2346 | { |
2347 | /* If this is a relocatable link (output_bfd test tells us), just | |
2348 | call the generic function. Any adjustment will be done at final | |
2349 | link time. */ | |
2350 | if (output_bfd != NULL) | |
cedb70c5 | 2351 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2352 | input_section, output_bfd, error_message); |
2353 | ||
2354 | if (error_message != NULL) | |
2355 | { | |
2356 | static char buf[60]; | |
2357 | sprintf (buf, "generic linker can't handle %s", | |
2358 | reloc_entry->howto->name); | |
2359 | *error_message = buf; | |
2360 | } | |
2361 | return bfd_reloc_dangerous; | |
2362 | } | |
2363 | ||
e717da7e AM |
2364 | struct ppc64_elf_obj_tdata |
2365 | { | |
2366 | struct elf_obj_tdata elf; | |
2367 | ||
2368 | /* Shortcuts to dynamic linker sections. */ | |
2369 | asection *got; | |
2370 | asection *relgot; | |
2371 | ||
81688140 AM |
2372 | /* Used during garbage collection. We attach global symbols defined |
2373 | on removed .opd entries to this section so that the sym is removed. */ | |
2374 | asection *deleted_section; | |
2375 | ||
e717da7e AM |
2376 | /* TLS local dynamic got entry handling. Suppose for multiple GOT |
2377 | sections means we potentially need one of these for each input bfd. */ | |
2378 | union { | |
2379 | bfd_signed_vma refcount; | |
2380 | bfd_vma offset; | |
2381 | } tlsld_got; | |
8860955f AM |
2382 | |
2383 | /* A copy of relocs before they are modified for --emit-relocs. */ | |
2384 | Elf_Internal_Rela *opd_relocs; | |
e717da7e AM |
2385 | }; |
2386 | ||
2387 | #define ppc64_elf_tdata(bfd) \ | |
2388 | ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any) | |
2389 | ||
2390 | #define ppc64_tlsld_got(bfd) \ | |
2391 | (&ppc64_elf_tdata (bfd)->tlsld_got) | |
2392 | ||
2393 | /* Override the generic function because we store some extras. */ | |
2394 | ||
2395 | static bfd_boolean | |
2396 | ppc64_elf_mkobject (bfd *abfd) | |
2397 | { | |
2398 | bfd_size_type amt = sizeof (struct ppc64_elf_obj_tdata); | |
2399 | abfd->tdata.any = bfd_zalloc (abfd, amt); | |
2400 | if (abfd->tdata.any == NULL) | |
2401 | return FALSE; | |
2402 | return TRUE; | |
2403 | } | |
2404 | ||
ee75fd95 AM |
2405 | /* Return 1 if target is one of ours. */ |
2406 | ||
7b53ace3 | 2407 | static bfd_boolean |
ee75fd95 | 2408 | is_ppc64_elf_target (const struct bfd_target *targ) |
7b53ace3 AM |
2409 | { |
2410 | extern const bfd_target bfd_elf64_powerpc_vec; | |
2411 | extern const bfd_target bfd_elf64_powerpcle_vec; | |
2412 | ||
2413 | return targ == &bfd_elf64_powerpc_vec || targ == &bfd_elf64_powerpcle_vec; | |
2414 | } | |
2415 | ||
feee612b AM |
2416 | /* Fix bad default arch selected for a 64 bit input bfd when the |
2417 | default is 32 bit. */ | |
2418 | ||
b34976b6 | 2419 | static bfd_boolean |
4ce794b7 | 2420 | ppc64_elf_object_p (bfd *abfd) |
feee612b AM |
2421 | { |
2422 | if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 32) | |
2423 | { | |
2424 | Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd); | |
2425 | ||
2426 | if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS64) | |
2427 | { | |
2428 | /* Relies on arch after 32 bit default being 64 bit default. */ | |
2429 | abfd->arch_info = abfd->arch_info->next; | |
2430 | BFD_ASSERT (abfd->arch_info->bits_per_word == 64); | |
2431 | } | |
2432 | } | |
b34976b6 | 2433 | return TRUE; |
feee612b AM |
2434 | } |
2435 | ||
d37c89e5 AM |
2436 | /* Support for core dump NOTE sections. */ |
2437 | ||
2438 | static bfd_boolean | |
2439 | ppc64_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) | |
2440 | { | |
eea6121a | 2441 | size_t offset, size; |
d37c89e5 AM |
2442 | |
2443 | if (note->descsz != 504) | |
2444 | return FALSE; | |
2445 | ||
2446 | /* pr_cursig */ | |
2447 | elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12); | |
2448 | ||
2449 | /* pr_pid */ | |
2450 | elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 32); | |
2451 | ||
2452 | /* pr_reg */ | |
2453 | offset = 112; | |
eea6121a | 2454 | size = 384; |
d37c89e5 AM |
2455 | |
2456 | /* Make a ".reg/999" section. */ | |
2457 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", | |
eea6121a | 2458 | size, note->descpos + offset); |
d37c89e5 AM |
2459 | } |
2460 | ||
2461 | static bfd_boolean | |
2462 | ppc64_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) | |
2463 | { | |
2464 | if (note->descsz != 136) | |
2465 | return FALSE; | |
2466 | ||
2467 | elf_tdata (abfd)->core_program | |
2468 | = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16); | |
2469 | elf_tdata (abfd)->core_command | |
2470 | = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80); | |
2471 | ||
2472 | return TRUE; | |
2473 | } | |
2474 | ||
5bd4f169 AM |
2475 | /* Merge backend specific data from an object file to the output |
2476 | object file when linking. */ | |
2f6d9989 | 2477 | |
b34976b6 | 2478 | static bfd_boolean |
4ce794b7 | 2479 | ppc64_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd) |
5bd4f169 | 2480 | { |
5bd4f169 AM |
2481 | /* Check if we have the same endianess. */ |
2482 | if (ibfd->xvec->byteorder != obfd->xvec->byteorder | |
87e226ce | 2483 | && ibfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN |
5bd4f169 AM |
2484 | && obfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN) |
2485 | { | |
2486 | const char *msg; | |
2487 | ||
2488 | if (bfd_big_endian (ibfd)) | |
d003868e | 2489 | msg = _("%B: compiled for a big endian system " |
4ce794b7 | 2490 | "and target is little endian"); |
5bd4f169 | 2491 | else |
d003868e | 2492 | msg = _("%B: compiled for a little endian system " |
4ce794b7 | 2493 | "and target is big endian"); |
5bd4f169 | 2494 | |
d003868e | 2495 | (*_bfd_error_handler) (msg, ibfd); |
5bd4f169 AM |
2496 | |
2497 | bfd_set_error (bfd_error_wrong_format); | |
b34976b6 | 2498 | return FALSE; |
5bd4f169 AM |
2499 | } |
2500 | ||
b34976b6 | 2501 | return TRUE; |
5bd4f169 | 2502 | } |
f0abc2a1 | 2503 | |
5d35169e AM |
2504 | /* Add extra PPC sections. */ |
2505 | ||
2506 | static struct bfd_elf_special_section const ppc64_elf_special_sections[]= | |
2507 | { | |
7dcb9820 AM |
2508 | { ".sdata", 6, -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, |
2509 | { ".sbss", 5, -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, | |
2510 | { ".plt", 4, 0, SHT_NOBITS, 0 }, | |
2511 | { ".toc", 4, 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
2512 | { ".toc1", 5, 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
2513 | { ".tocbss", 7, 0, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, | |
2514 | { NULL, 0, 0, 0, 0 } | |
5d35169e AM |
2515 | }; |
2516 | ||
f0abc2a1 AM |
2517 | struct _ppc64_elf_section_data |
2518 | { | |
2519 | struct bfd_elf_section_data elf; | |
411e1bfb AM |
2520 | |
2521 | /* An array with one entry for each opd function descriptor. */ | |
f0abc2a1 AM |
2522 | union |
2523 | { | |
411e1bfb | 2524 | /* Points to the function code section for local opd entries. */ |
f0abc2a1 | 2525 | asection **func_sec; |
411e1bfb | 2526 | /* After editing .opd, adjust references to opd local syms. */ |
f0abc2a1 AM |
2527 | long *adjust; |
2528 | } opd; | |
411e1bfb AM |
2529 | |
2530 | /* An array for toc sections, indexed by offset/8. | |
2531 | Specifies the relocation symbol index used at a given toc offset. */ | |
2532 | unsigned *t_symndx; | |
f0abc2a1 AM |
2533 | }; |
2534 | ||
2535 | #define ppc64_elf_section_data(sec) \ | |
411e1bfb | 2536 | ((struct _ppc64_elf_section_data *) elf_section_data (sec)) |
f0abc2a1 AM |
2537 | |
2538 | static bfd_boolean | |
4ce794b7 | 2539 | ppc64_elf_new_section_hook (bfd *abfd, asection *sec) |
f0abc2a1 AM |
2540 | { |
2541 | struct _ppc64_elf_section_data *sdata; | |
2542 | bfd_size_type amt = sizeof (*sdata); | |
2543 | ||
4ce794b7 | 2544 | sdata = bfd_zalloc (abfd, amt); |
f0abc2a1 AM |
2545 | if (sdata == NULL) |
2546 | return FALSE; | |
4ce794b7 | 2547 | sec->used_by_bfd = sdata; |
f0abc2a1 AM |
2548 | |
2549 | return _bfd_elf_new_section_hook (abfd, sec); | |
2550 | } | |
4025353c AM |
2551 | |
2552 | static void * | |
2553 | get_opd_info (asection * sec) | |
2554 | { | |
2555 | if (sec != NULL | |
2556 | && ppc64_elf_section_data (sec) != NULL | |
2557 | && ppc64_elf_section_data (sec)->opd.adjust != NULL) | |
2558 | return ppc64_elf_section_data (sec)->opd.adjust; | |
2559 | return NULL; | |
2560 | } | |
90e3cdf2 JJ |
2561 | \f |
2562 | /* Parameters for the qsort hook. */ | |
2563 | static asection *synthetic_opd; | |
2564 | static bfd_boolean synthetic_relocatable; | |
2565 | ||
699733f6 | 2566 | /* qsort comparison function for ppc64_elf_get_synthetic_symtab. */ |
90e3cdf2 JJ |
2567 | |
2568 | static int | |
2569 | compare_symbols (const void *ap, const void *bp) | |
2570 | { | |
2571 | const asymbol *a = * (const asymbol **) ap; | |
2572 | const asymbol *b = * (const asymbol **) bp; | |
2573 | ||
699733f6 AM |
2574 | /* Section symbols first. */ |
2575 | if ((a->flags & BSF_SECTION_SYM) && !(b->flags & BSF_SECTION_SYM)) | |
90e3cdf2 | 2576 | return -1; |
699733f6 | 2577 | if (!(a->flags & BSF_SECTION_SYM) && (b->flags & BSF_SECTION_SYM)) |
90e3cdf2 JJ |
2578 | return 1; |
2579 | ||
699733f6 | 2580 | /* then .opd symbols. */ |
90e3cdf2 JJ |
2581 | if (a->section == synthetic_opd && b->section != synthetic_opd) |
2582 | return -1; | |
2583 | if (a->section != synthetic_opd && b->section == synthetic_opd) | |
2584 | return 1; | |
2585 | ||
699733f6 | 2586 | /* then other code symbols. */ |
90e3cdf2 JJ |
2587 | if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) |
2588 | == (SEC_CODE | SEC_ALLOC) | |
2589 | && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
2590 | != (SEC_CODE | SEC_ALLOC)) | |
2591 | return -1; | |
2592 | ||
2593 | if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
2594 | != (SEC_CODE | SEC_ALLOC) | |
2595 | && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
2596 | == (SEC_CODE | SEC_ALLOC)) | |
2597 | return 1; | |
2598 | ||
2599 | if (synthetic_relocatable) | |
2600 | { | |
2601 | if (a->section->id < b->section->id) | |
2602 | return -1; | |
2603 | ||
2604 | if (a->section->id > b->section->id) | |
2605 | return 1; | |
2606 | } | |
2607 | ||
2608 | if (a->value + a->section->vma < b->value + b->section->vma) | |
2609 | return -1; | |
2610 | ||
2611 | if (a->value + a->section->vma > b->value + b->section->vma) | |
2612 | return 1; | |
2613 | ||
2614 | return 0; | |
2615 | } | |
2616 | ||
699733f6 | 2617 | /* Search SYMS for a symbol of the given VALUE. */ |
90e3cdf2 | 2618 | |
699733f6 AM |
2619 | static asymbol * |
2620 | sym_exists_at (asymbol **syms, long lo, long hi, int id, bfd_vma value) | |
90e3cdf2 | 2621 | { |
699733f6 | 2622 | long mid; |
90e3cdf2 | 2623 | |
699733f6 AM |
2624 | if (id == -1) |
2625 | { | |
2626 | while (lo < hi) | |
2627 | { | |
2628 | mid = (lo + hi) >> 1; | |
2629 | if (syms[mid]->value + syms[mid]->section->vma < value) | |
2630 | lo = mid + 1; | |
2631 | else if (syms[mid]->value + syms[mid]->section->vma > value) | |
2632 | hi = mid; | |
2633 | else | |
2634 | return syms[mid]; | |
2635 | } | |
2636 | } | |
2637 | else | |
2638 | { | |
2639 | while (lo < hi) | |
2640 | { | |
2641 | mid = (lo + hi) >> 1; | |
2642 | if (syms[mid]->section->id < id) | |
2643 | lo = mid + 1; | |
2644 | else if (syms[mid]->section->id > id) | |
2645 | hi = mid; | |
2646 | else if (syms[mid]->value < value) | |
2647 | lo = mid + 1; | |
2648 | else if (syms[mid]->value > value) | |
2649 | hi = mid; | |
2650 | else | |
2651 | return syms[mid]; | |
2652 | } | |
2653 | } | |
2654 | return NULL; | |
90e3cdf2 JJ |
2655 | } |
2656 | ||
699733f6 AM |
2657 | /* Create synthetic symbols, effectively restoring "dot-symbol" function |
2658 | entry syms. */ | |
90e3cdf2 JJ |
2659 | |
2660 | static long | |
a7535cf3 AM |
2661 | ppc64_elf_get_synthetic_symtab (bfd *abfd, |
2662 | long static_count, asymbol **static_syms, | |
2663 | long dyn_count, asymbol **dyn_syms, | |
c9727e01 | 2664 | asymbol **ret) |
90e3cdf2 JJ |
2665 | { |
2666 | asymbol *s; | |
699733f6 AM |
2667 | long i; |
2668 | long count; | |
90e3cdf2 | 2669 | char *names; |
a7535cf3 | 2670 | long symcount, codesecsym, codesecsymend, secsymend, opdsymend; |
699733f6 | 2671 | asection *opd; |
90e3cdf2 | 2672 | bfd_boolean relocatable = (abfd->flags & (EXEC_P | DYNAMIC)) == 0; |
a7535cf3 | 2673 | asymbol **syms; |
90e3cdf2 JJ |
2674 | |
2675 | *ret = NULL; | |
2676 | ||
2677 | opd = bfd_get_section_by_name (abfd, ".opd"); | |
2678 | if (opd == NULL) | |
2679 | return 0; | |
2680 | ||
a7535cf3 | 2681 | symcount = static_count; |
c9727e01 | 2682 | if (!relocatable) |
a7535cf3 | 2683 | symcount += dyn_count; |
90e3cdf2 | 2684 | if (symcount == 0) |
c9727e01 | 2685 | return 0; |
90e3cdf2 | 2686 | |
a7535cf3 AM |
2687 | syms = bfd_malloc ((symcount + 1) * sizeof (*syms)); |
2688 | if (syms == NULL) | |
7356fed5 | 2689 | return -1; |
a7535cf3 AM |
2690 | |
2691 | if (!relocatable && static_count != 0 && dyn_count != 0) | |
2692 | { | |
2693 | /* Use both symbol tables. */ | |
2694 | memcpy (syms, static_syms, static_count * sizeof (*syms)); | |
2695 | memcpy (syms + static_count, dyn_syms, (dyn_count + 1) * sizeof (*syms)); | |
2696 | } | |
2697 | else if (!relocatable && static_count == 0) | |
2698 | memcpy (syms, dyn_syms, (symcount + 1) * sizeof (*syms)); | |
2699 | else | |
2700 | memcpy (syms, static_syms, (symcount + 1) * sizeof (*syms)); | |
2701 | ||
90e3cdf2 JJ |
2702 | synthetic_opd = opd; |
2703 | synthetic_relocatable = relocatable; | |
595da8c5 | 2704 | qsort (syms, symcount, sizeof (*syms), compare_symbols); |
90e3cdf2 | 2705 | |
c9727e01 AM |
2706 | if (!relocatable && symcount > 1) |
2707 | { | |
2708 | long j; | |
2709 | /* Trim duplicate syms, since we may have merged the normal and | |
2710 | dynamic symbols. Actually, we only care about syms that have | |
3b36f7e6 | 2711 | different values, so trim any with the same value. */ |
c9727e01 AM |
2712 | for (i = 1, j = 1; i < symcount; ++i) |
2713 | if (syms[i - 1]->value + syms[i - 1]->section->vma | |
2714 | != syms[i]->value + syms[i]->section->vma) | |
2715 | syms[j++] = syms[i]; | |
2716 | symcount = j; | |
2717 | } | |
2718 | ||
699733f6 AM |
2719 | i = 0; |
2720 | if (syms[i]->section == opd) | |
2721 | ++i; | |
2722 | codesecsym = i; | |
90e3cdf2 | 2723 | |
699733f6 AM |
2724 | for (; i < symcount; ++i) |
2725 | if (((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
2726 | != (SEC_CODE | SEC_ALLOC)) | |
2727 | || (syms[i]->flags & BSF_SECTION_SYM) == 0) | |
2728 | break; | |
2729 | codesecsymend = i; | |
90e3cdf2 | 2730 | |
699733f6 AM |
2731 | for (; i < symcount; ++i) |
2732 | if ((syms[i]->flags & BSF_SECTION_SYM) == 0) | |
2733 | break; | |
2734 | secsymend = i; | |
90e3cdf2 | 2735 | |
699733f6 AM |
2736 | for (; i < symcount; ++i) |
2737 | if (syms[i]->section != opd) | |
2738 | break; | |
2739 | opdsymend = i; | |
90e3cdf2 | 2740 | |
699733f6 AM |
2741 | for (; i < symcount; ++i) |
2742 | if ((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
2743 | != (SEC_CODE | SEC_ALLOC)) | |
2744 | break; | |
2745 | symcount = i; | |
2746 | ||
c9727e01 | 2747 | count = 0; |
699733f6 | 2748 | if (opdsymend == secsymend) |
c9727e01 | 2749 | goto done; |
90e3cdf2 | 2750 | |
699733f6 | 2751 | if (relocatable) |
90e3cdf2 | 2752 | { |
699733f6 AM |
2753 | bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean); |
2754 | arelent *r; | |
2755 | size_t size; | |
2756 | long relcount; | |
90e3cdf2 | 2757 | |
699733f6 | 2758 | slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; |
90e3cdf2 | 2759 | relcount = (opd->flags & SEC_RELOC) ? opd->reloc_count : 0; |
7356fed5 | 2760 | if (relcount == 0) |
c9727e01 | 2761 | goto done; |
90e3cdf2 | 2762 | |
7356fed5 AM |
2763 | if (!(*slurp_relocs) (abfd, opd, static_syms, FALSE)) |
2764 | { | |
2765 | count = -1; | |
2766 | goto done; | |
2767 | } | |
2768 | ||
699733f6 | 2769 | size = 0; |
595da8c5 | 2770 | for (i = secsymend, r = opd->relocation; i < opdsymend; ++i) |
699733f6 AM |
2771 | { |
2772 | asymbol *sym; | |
90e3cdf2 | 2773 | |
595da8c5 | 2774 | while (r < opd->relocation + relcount |
699733f6 AM |
2775 | && r->address < syms[i]->value + opd->vma) |
2776 | ++r; | |
90e3cdf2 | 2777 | |
595da8c5 | 2778 | if (r == opd->relocation + relcount) |
699733f6 | 2779 | break; |
90e3cdf2 | 2780 | |
699733f6 AM |
2781 | if (r->address != syms[i]->value + opd->vma) |
2782 | continue; | |
90e3cdf2 | 2783 | |
699733f6 AM |
2784 | if (r->howto->type != R_PPC64_ADDR64) |
2785 | continue; | |
90e3cdf2 | 2786 | |
699733f6 AM |
2787 | sym = *r->sym_ptr_ptr; |
2788 | if (!sym_exists_at (syms, opdsymend, symcount, | |
2789 | sym->section->id, sym->value + r->addend)) | |
2790 | { | |
2791 | ++count; | |
2792 | size += sizeof (asymbol); | |
2793 | size += strlen (syms[i]->name) + 2; | |
2794 | } | |
2795 | } | |
90e3cdf2 | 2796 | |
699733f6 AM |
2797 | s = *ret = bfd_malloc (size); |
2798 | if (s == NULL) | |
2799 | { | |
7356fed5 | 2800 | count = -1; |
c9727e01 | 2801 | goto done; |
699733f6 | 2802 | } |
90e3cdf2 | 2803 | |
699733f6 | 2804 | names = (char *) (s + count); |
90e3cdf2 | 2805 | |
595da8c5 | 2806 | for (i = secsymend, r = opd->relocation; i < opdsymend; ++i) |
90e3cdf2 | 2807 | { |
699733f6 | 2808 | asymbol *sym; |
90e3cdf2 | 2809 | |
595da8c5 | 2810 | while (r < opd->relocation + relcount |
699733f6 AM |
2811 | && r->address < syms[i]->value + opd->vma) |
2812 | ++r; | |
90e3cdf2 | 2813 | |
595da8c5 | 2814 | if (r == opd->relocation + relcount) |
699733f6 AM |
2815 | break; |
2816 | ||
2817 | if (r->address != syms[i]->value + opd->vma) | |
2818 | continue; | |
2819 | ||
2820 | if (r->howto->type != R_PPC64_ADDR64) | |
2821 | continue; | |
90e3cdf2 | 2822 | |
699733f6 AM |
2823 | sym = *r->sym_ptr_ptr; |
2824 | if (!sym_exists_at (syms, opdsymend, symcount, | |
2825 | sym->section->id, sym->value + r->addend)) | |
2826 | { | |
2827 | size_t len; | |
2828 | ||
2829 | *s = *syms[i]; | |
2830 | s->section = sym->section; | |
2831 | s->value = sym->value + r->addend; | |
2832 | s->name = names; | |
2833 | *names++ = '.'; | |
2834 | len = strlen (syms[i]->name); | |
2835 | memcpy (names, syms[i]->name, len + 1); | |
2836 | names += len + 1; | |
2837 | s++; | |
2838 | } | |
2839 | } | |
2840 | } | |
2841 | else | |
90e3cdf2 | 2842 | { |
699733f6 AM |
2843 | bfd_byte *contents; |
2844 | size_t size; | |
90e3cdf2 | 2845 | |
699733f6 AM |
2846 | if (!bfd_malloc_and_get_section (abfd, opd, &contents)) |
2847 | { | |
2848 | if (contents) | |
c9727e01 AM |
2849 | { |
2850 | free_contents_and_exit: | |
2851 | free (contents); | |
2852 | } | |
7356fed5 | 2853 | count = -1; |
c9727e01 | 2854 | goto done; |
699733f6 | 2855 | } |
90e3cdf2 | 2856 | |
699733f6 AM |
2857 | size = 0; |
2858 | for (i = secsymend; i < opdsymend; ++i) | |
2859 | { | |
2860 | bfd_vma ent; | |
90e3cdf2 | 2861 | |
699733f6 AM |
2862 | ent = bfd_get_64 (abfd, contents + syms[i]->value); |
2863 | if (!sym_exists_at (syms, opdsymend, symcount, -1, ent)) | |
2864 | { | |
2865 | ++count; | |
2866 | size += sizeof (asymbol); | |
2867 | size += strlen (syms[i]->name) + 2; | |
2868 | } | |
2869 | } | |
90e3cdf2 | 2870 | |
699733f6 AM |
2871 | s = *ret = bfd_malloc (size); |
2872 | if (s == NULL) | |
7356fed5 | 2873 | goto free_contents_and_exit; |
90e3cdf2 | 2874 | |
699733f6 | 2875 | names = (char *) (s + count); |
90e3cdf2 | 2876 | |
699733f6 | 2877 | for (i = secsymend; i < opdsymend; ++i) |
90e3cdf2 | 2878 | { |
699733f6 | 2879 | bfd_vma ent; |
90e3cdf2 | 2880 | |
699733f6 AM |
2881 | ent = bfd_get_64 (abfd, contents + syms[i]->value); |
2882 | if (!sym_exists_at (syms, opdsymend, symcount, -1, ent)) | |
90e3cdf2 | 2883 | { |
c9727e01 | 2884 | long lo, hi; |
699733f6 | 2885 | size_t len; |
c9727e01 | 2886 | asection *sec = abfd->sections; |
90e3cdf2 | 2887 | |
699733f6 AM |
2888 | *s = *syms[i]; |
2889 | lo = codesecsym; | |
2890 | hi = codesecsymend; | |
2891 | while (lo < hi) | |
2892 | { | |
c9727e01 | 2893 | long mid = (lo + hi) >> 1; |
699733f6 AM |
2894 | if (syms[mid]->section->vma < ent) |
2895 | lo = mid + 1; | |
2896 | else if (syms[mid]->section->vma > ent) | |
2897 | hi = mid; | |
2898 | else | |
c9727e01 AM |
2899 | { |
2900 | sec = syms[mid]->section; | |
2901 | break; | |
2902 | } | |
699733f6 AM |
2903 | } |
2904 | ||
c9727e01 | 2905 | if (lo >= hi && lo > codesecsym) |
699733f6 | 2906 | sec = syms[lo - 1]->section; |
699733f6 AM |
2907 | |
2908 | for (; sec != NULL; sec = sec->next) | |
2909 | { | |
2910 | if (sec->vma > ent) | |
2911 | break; | |
2912 | if ((sec->flags & SEC_ALLOC) == 0 | |
2913 | || (sec->flags & SEC_LOAD) == 0) | |
2914 | break; | |
2915 | if ((sec->flags & SEC_CODE) != 0) | |
2916 | s->section = sec; | |
2917 | } | |
2918 | s->value = ent - s->section->vma; | |
2919 | s->name = names; | |
2920 | *names++ = '.'; | |
2921 | len = strlen (syms[i]->name); | |
2922 | memcpy (names, syms[i]->name, len + 1); | |
2923 | names += len + 1; | |
2924 | s++; | |
90e3cdf2 | 2925 | } |
90e3cdf2 | 2926 | } |
699733f6 | 2927 | free (contents); |
90e3cdf2 JJ |
2928 | } |
2929 | ||
c9727e01 | 2930 | done: |
a7535cf3 | 2931 | free (syms); |
90e3cdf2 JJ |
2932 | return count; |
2933 | } | |
5bd4f169 | 2934 | \f |
65f38f15 AM |
2935 | /* The following functions are specific to the ELF linker, while |
2936 | functions above are used generally. Those named ppc64_elf_* are | |
2937 | called by the main ELF linker code. They appear in this file more | |
2938 | or less in the order in which they are called. eg. | |
2939 | ppc64_elf_check_relocs is called early in the link process, | |
2940 | ppc64_elf_finish_dynamic_sections is one of the last functions | |
e86ce104 AM |
2941 | called. |
2942 | ||
2943 | PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that | |
2944 | functions have both a function code symbol and a function descriptor | |
2945 | symbol. A call to foo in a relocatable object file looks like: | |
2946 | ||
2947 | . .text | |
2948 | . x: | |
2949 | . bl .foo | |
2950 | . nop | |
2951 | ||
2952 | The function definition in another object file might be: | |
2953 | ||
2954 | . .section .opd | |
2955 | . foo: .quad .foo | |
2956 | . .quad .TOC.@tocbase | |
2957 | . .quad 0 | |
2958 | . | |
2959 | . .text | |
2960 | . .foo: blr | |
2961 | ||
2962 | When the linker resolves the call during a static link, the branch | |
2963 | unsurprisingly just goes to .foo and the .opd information is unused. | |
2964 | If the function definition is in a shared library, things are a little | |
2965 | different: The call goes via a plt call stub, the opd information gets | |
2966 | copied to the plt, and the linker patches the nop. | |
2967 | ||
2968 | . x: | |
2969 | . bl .foo_stub | |
2970 | . ld 2,40(1) | |
2971 | . | |
2972 | . | |
2973 | . .foo_stub: | |
2974 | . addis 12,2,Lfoo@toc@ha # in practice, the call stub | |
411e1bfb | 2975 | . addi 12,12,Lfoo@toc@l # is slightly optimized, but |
e86ce104 AM |
2976 | . std 2,40(1) # this is the general idea |
2977 | . ld 11,0(12) | |
2978 | . ld 2,8(12) | |
2979 | . mtctr 11 | |
2980 | . ld 11,16(12) | |
2981 | . bctr | |
2982 | . | |
2983 | . .section .plt | |
2984 | . Lfoo: reloc (R_PPC64_JMP_SLOT, foo) | |
2985 | ||
2986 | The "reloc ()" notation is supposed to indicate that the linker emits | |
2987 | an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd | |
2988 | copying. | |
2989 | ||
2990 | What are the difficulties here? Well, firstly, the relocations | |
2991 | examined by the linker in check_relocs are against the function code | |
2992 | sym .foo, while the dynamic relocation in the plt is emitted against | |
2993 | the function descriptor symbol, foo. Somewhere along the line, we need | |
2994 | to carefully copy dynamic link information from one symbol to the other. | |
2995 | Secondly, the generic part of the elf linker will make .foo a dynamic | |
2996 | symbol as is normal for most other backends. We need foo dynamic | |
2997 | instead, at least for an application final link. However, when | |
2998 | creating a shared library containing foo, we need to have both symbols | |
2999 | dynamic so that references to .foo are satisfied during the early | |
3000 | stages of linking. Otherwise the linker might decide to pull in a | |
8387904d AM |
3001 | definition from some other object, eg. a static library. |
3002 | ||
3003 | Update: As of August 2004, we support a new convention. Function | |
3004 | calls may use the function descriptor symbol, ie. "bl foo". This | |
3005 | behaves exactly as "bl .foo". */ | |
65f38f15 AM |
3006 | |
3007 | /* The linker needs to keep track of the number of relocs that it | |
3008 | decides to copy as dynamic relocs in check_relocs for each symbol. | |
3009 | This is so that it can later discard them if they are found to be | |
3010 | unnecessary. We store the information in a field extending the | |
3011 | regular ELF linker hash table. */ | |
3012 | ||
3013 | struct ppc_dyn_relocs | |
3014 | { | |
3015 | struct ppc_dyn_relocs *next; | |
3016 | ||
3017 | /* The input section of the reloc. */ | |
3018 | asection *sec; | |
3019 | ||
3020 | /* Total number of relocs copied for the input section. */ | |
3021 | bfd_size_type count; | |
3022 | ||
3023 | /* Number of pc-relative relocs copied for the input section. */ | |
3024 | bfd_size_type pc_count; | |
3025 | }; | |
3026 | ||
411e1bfb AM |
3027 | /* Track GOT entries needed for a given symbol. We might need more |
3028 | than one got entry per symbol. */ | |
3029 | struct got_entry | |
3030 | { | |
3031 | struct got_entry *next; | |
3032 | ||
e7b938ca | 3033 | /* The symbol addend that we'll be placing in the GOT. */ |
411e1bfb AM |
3034 | bfd_vma addend; |
3035 | ||
e717da7e AM |
3036 | /* Unlike other ELF targets, we use separate GOT entries for the same |
3037 | symbol referenced from different input files. This is to support | |
3038 | automatic multiple TOC/GOT sections, where the TOC base can vary | |
3039 | from one input file to another. | |
3040 | ||
3041 | Point to the BFD owning this GOT entry. */ | |
3042 | bfd *owner; | |
3043 | ||
3044 | /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD, | |
3045 | TLS_TPREL or TLS_DTPREL for tls entries. */ | |
3046 | char tls_type; | |
3047 | ||
e7b938ca | 3048 | /* Reference count until size_dynamic_sections, GOT offset thereafter. */ |
411e1bfb AM |
3049 | union |
3050 | { | |
3051 | bfd_signed_vma refcount; | |
3052 | bfd_vma offset; | |
3053 | } got; | |
411e1bfb AM |
3054 | }; |
3055 | ||
3056 | /* The same for PLT. */ | |
3057 | struct plt_entry | |
3058 | { | |
3059 | struct plt_entry *next; | |
3060 | ||
3061 | bfd_vma addend; | |
3062 | ||
3063 | union | |
3064 | { | |
3065 | bfd_signed_vma refcount; | |
3066 | bfd_vma offset; | |
3067 | } plt; | |
3068 | }; | |
3069 | ||
65f38f15 | 3070 | /* Of those relocs that might be copied as dynamic relocs, this macro |
58ac9f71 AM |
3071 | selects those that must be copied when linking a shared library, |
3072 | even when the symbol is local. */ | |
65f38f15 | 3073 | |
411e1bfb | 3074 | #define MUST_BE_DYN_RELOC(RTYPE) \ |
805fc799 AM |
3075 | ((RTYPE) != R_PPC64_REL32 \ |
3076 | && (RTYPE) != R_PPC64_REL64 \ | |
04c9666a | 3077 | && (RTYPE) != R_PPC64_REL30) |
65f38f15 | 3078 | |
f4656909 AM |
3079 | /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid |
3080 | copying dynamic variables from a shared lib into an app's dynbss | |
3081 | section, and instead use a dynamic relocation to point into the | |
5d35169e AM |
3082 | shared lib. With code that gcc generates, it's vital that this be |
3083 | enabled; In the PowerPC64 ABI, the address of a function is actually | |
3084 | the address of a function descriptor, which resides in the .opd | |
3085 | section. gcc uses the descriptor directly rather than going via the | |
3086 | GOT as some other ABI's do, which means that initialized function | |
3087 | pointers must reference the descriptor. Thus, a function pointer | |
3088 | initialized to the address of a function in a shared library will | |
3089 | either require a copy reloc, or a dynamic reloc. Using a copy reloc | |
4cc11e76 | 3090 | redefines the function descriptor symbol to point to the copy. This |
5d35169e AM |
3091 | presents a problem as a plt entry for that function is also |
3092 | initialized from the function descriptor symbol and the copy reloc | |
3093 | may not be initialized first. */ | |
a23b6845 | 3094 | #define ELIMINATE_COPY_RELOCS 1 |
f4656909 | 3095 | |
721956f4 AM |
3096 | /* Section name for stubs is the associated section name plus this |
3097 | string. */ | |
3098 | #define STUB_SUFFIX ".stub" | |
3099 | ||
3100 | /* Linker stubs. | |
3101 | ppc_stub_long_branch: | |
3102 | Used when a 14 bit branch (or even a 24 bit branch) can't reach its | |
3103 | destination, but a 24 bit branch in a stub section will reach. | |
3104 | . b dest | |
3105 | ||
3106 | ppc_stub_plt_branch: | |
3107 | Similar to the above, but a 24 bit branch in the stub section won't | |
3108 | reach its destination. | |
87e226ce AM |
3109 | . addis %r12,%r2,xxx@toc@ha |
3110 | . ld %r11,xxx@toc@l(%r12) | |
721956f4 AM |
3111 | . mtctr %r11 |
3112 | . bctr | |
3113 | ||
3114 | ppc_stub_plt_call: | |
2c66dc6c AM |
3115 | Used to call a function in a shared library. If it so happens that |
3116 | the plt entry referenced crosses a 64k boundary, then an extra | |
3117 | "addis %r12,%r12,1" will be inserted before the load at xxx+8 or | |
3118 | xxx+16 as appropriate. | |
87e226ce | 3119 | . addis %r12,%r2,xxx@toc@ha |
721956f4 | 3120 | . std %r2,40(%r1) |
87e226ce AM |
3121 | . ld %r11,xxx+0@toc@l(%r12) |
3122 | . ld %r2,xxx+8@toc@l(%r12) | |
721956f4 | 3123 | . mtctr %r11 |
87e226ce | 3124 | . ld %r11,xxx+16@toc@l(%r12) |
721956f4 | 3125 | . bctr |
ad8e1ba5 AM |
3126 | |
3127 | ppc_stub_long_branch and ppc_stub_plt_branch may also have additional | |
3128 | code to adjust the value and save r2 to support multiple toc sections. | |
3129 | A ppc_stub_long_branch with an r2 offset looks like: | |
3130 | . std %r2,40(%r1) | |
3131 | . addis %r2,%r2,off@ha | |
3132 | . addi %r2,%r2,off@l | |
3133 | . b dest | |
3134 | ||
3135 | A ppc_stub_plt_branch with an r2 offset looks like: | |
3136 | . std %r2,40(%r1) | |
3137 | . addis %r12,%r2,xxx@toc@ha | |
3138 | . ld %r11,xxx@toc@l(%r12) | |
3139 | . addis %r2,%r2,off@ha | |
3140 | . addi %r2,%r2,off@l | |
3141 | . mtctr %r11 | |
3142 | . bctr | |
721956f4 AM |
3143 | */ |
3144 | ||
3145 | enum ppc_stub_type { | |
3146 | ppc_stub_none, | |
3147 | ppc_stub_long_branch, | |
ad8e1ba5 | 3148 | ppc_stub_long_branch_r2off, |
721956f4 | 3149 | ppc_stub_plt_branch, |
ad8e1ba5 | 3150 | ppc_stub_plt_branch_r2off, |
721956f4 AM |
3151 | ppc_stub_plt_call |
3152 | }; | |
3153 | ||
3154 | struct ppc_stub_hash_entry { | |
3155 | ||
3156 | /* Base hash table entry structure. */ | |
3157 | struct bfd_hash_entry root; | |
3158 | ||
ad8e1ba5 AM |
3159 | enum ppc_stub_type stub_type; |
3160 | ||
721956f4 AM |
3161 | /* The stub section. */ |
3162 | asection *stub_sec; | |
3163 | ||
3164 | /* Offset within stub_sec of the beginning of this stub. */ | |
3165 | bfd_vma stub_offset; | |
3166 | ||
3167 | /* Given the symbol's value and its section we can determine its final | |
3168 | value when building the stubs (so the stub knows where to jump. */ | |
3169 | bfd_vma target_value; | |
3170 | asection *target_section; | |
3171 | ||
721956f4 AM |
3172 | /* The symbol table entry, if any, that this was derived from. */ |
3173 | struct ppc_link_hash_entry *h; | |
3174 | ||
411e1bfb AM |
3175 | /* And the reloc addend that this was derived from. */ |
3176 | bfd_vma addend; | |
3177 | ||
721956f4 AM |
3178 | /* Where this stub is being called from, or, in the case of combined |
3179 | stub sections, the first input section in the group. */ | |
3180 | asection *id_sec; | |
3181 | }; | |
3182 | ||
3183 | struct ppc_branch_hash_entry { | |
3184 | ||
3185 | /* Base hash table entry structure. */ | |
3186 | struct bfd_hash_entry root; | |
3187 | ||
3188 | /* Offset within .branch_lt. */ | |
3189 | unsigned int offset; | |
3190 | ||
3191 | /* Generation marker. */ | |
3192 | unsigned int iter; | |
3193 | }; | |
65f38f15 AM |
3194 | |
3195 | struct ppc_link_hash_entry | |
3196 | { | |
3197 | struct elf_link_hash_entry elf; | |
3198 | ||
721956f4 AM |
3199 | /* A pointer to the most recently used stub hash entry against this |
3200 | symbol. */ | |
3201 | struct ppc_stub_hash_entry *stub_cache; | |
3202 | ||
65f38f15 AM |
3203 | /* Track dynamic relocs copied for this symbol. */ |
3204 | struct ppc_dyn_relocs *dyn_relocs; | |
e86ce104 | 3205 | |
721956f4 | 3206 | /* Link between function code and descriptor symbols. */ |
34814b9f | 3207 | struct ppc_link_hash_entry *oh; |
721956f4 | 3208 | |
e86ce104 AM |
3209 | /* Flag function code and descriptor symbols. */ |
3210 | unsigned int is_func:1; | |
3211 | unsigned int is_func_descriptor:1; | |
908b32fc | 3212 | unsigned int fake:1; |
411e1bfb | 3213 | |
c5614fa4 AM |
3214 | /* Whether global opd/toc sym has been adjusted or not. |
3215 | After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag | |
3216 | should be set for all globals defined in any opd/toc section. */ | |
754021d0 AM |
3217 | unsigned int adjust_done:1; |
3218 | ||
99877b66 AM |
3219 | /* Set if we twiddled this symbol to weak at some stage. */ |
3220 | unsigned int was_undefined:1; | |
3221 | ||
411e1bfb | 3222 | /* Contexts in which symbol is used in the GOT (or TOC). |
e7b938ca AM |
3223 | TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the |
3224 | corresponding relocs are encountered during check_relocs. | |
3225 | tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to | |
3226 | indicate the corresponding GOT entry type is not needed. | |
3227 | tls_optimize may also set TLS_TPRELGD when a GD reloc turns into | |
3228 | a TPREL one. We use a separate flag rather than setting TPREL | |
3229 | just for convenience in distinguishing the two cases. */ | |
3230 | #define TLS_GD 1 /* GD reloc. */ | |
3231 | #define TLS_LD 2 /* LD reloc. */ | |
3232 | #define TLS_TPREL 4 /* TPREL reloc, => IE. */ | |
3233 | #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */ | |
3234 | #define TLS_TLS 16 /* Any TLS reloc. */ | |
3235 | #define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */ | |
3236 | #define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */ | |
3237 | char tls_mask; | |
65f38f15 AM |
3238 | }; |
3239 | ||
3240 | /* ppc64 ELF linker hash table. */ | |
3241 | ||
3242 | struct ppc_link_hash_table | |
3243 | { | |
3244 | struct elf_link_hash_table elf; | |
3245 | ||
721956f4 AM |
3246 | /* The stub hash table. */ |
3247 | struct bfd_hash_table stub_hash_table; | |
3248 | ||
3249 | /* Another hash table for plt_branch stubs. */ | |
3250 | struct bfd_hash_table branch_hash_table; | |
3251 | ||
3252 | /* Linker stub bfd. */ | |
3253 | bfd *stub_bfd; | |
3254 | ||
3255 | /* Linker call-backs. */ | |
4ce794b7 AM |
3256 | asection * (*add_stub_section) (const char *, asection *); |
3257 | void (*layout_sections_again) (void); | |
721956f4 AM |
3258 | |
3259 | /* Array to keep track of which stub sections have been created, and | |
3260 | information on stub grouping. */ | |
3261 | struct map_stub { | |
3262 | /* This is the section to which stubs in the group will be attached. */ | |
3263 | asection *link_sec; | |
3264 | /* The stub section. */ | |
3265 | asection *stub_sec; | |
ad8e1ba5 AM |
3266 | /* Along with elf_gp, specifies the TOC pointer used in this group. */ |
3267 | bfd_vma toc_off; | |
721956f4 AM |
3268 | } *stub_group; |
3269 | ||
ad8e1ba5 AM |
3270 | /* Temp used when calculating TOC pointers. */ |
3271 | bfd_vma toc_curr; | |
3272 | ||
8f3bab57 AM |
3273 | /* Highest input section id. */ |
3274 | int top_id; | |
3275 | ||
734b6cf9 AM |
3276 | /* Highest output section index. */ |
3277 | int top_index; | |
3278 | ||
3279 | /* List of input sections for each output section. */ | |
3280 | asection **input_list; | |
721956f4 | 3281 | |
65f38f15 | 3282 | /* Short-cuts to get to dynamic linker sections. */ |
4ce794b7 | 3283 | asection *got; |
4ce794b7 AM |
3284 | asection *plt; |
3285 | asection *relplt; | |
3286 | asection *dynbss; | |
3287 | asection *relbss; | |
3288 | asection *glink; | |
82bd7b59 | 3289 | asection *sfpr; |
4ce794b7 AM |
3290 | asection *brlt; |
3291 | asection *relbrlt; | |
ec338859 | 3292 | |
8387904d AM |
3293 | /* Shortcut to .__tls_get_addr and __tls_get_addr. */ |
3294 | struct ppc_link_hash_entry *tls_get_addr; | |
3295 | struct ppc_link_hash_entry *tls_get_addr_fd; | |
411e1bfb | 3296 | |
9b5ecbd0 AM |
3297 | /* Statistics. */ |
3298 | unsigned long stub_count[ppc_stub_plt_call]; | |
3299 | ||
ee75fd95 AM |
3300 | /* Number of stubs against global syms. */ |
3301 | unsigned long stub_globals; | |
3302 | ||
ad8e1ba5 | 3303 | /* Set if we should emit symbols for stubs. */ |
99877b66 | 3304 | unsigned int emit_stub_syms:1; |
ad8e1ba5 | 3305 | |
4c52953f AM |
3306 | /* Support for multiple toc sections. */ |
3307 | unsigned int no_multi_toc:1; | |
3308 | unsigned int multi_toc_needed:1; | |
3309 | ||
5d1634d7 | 3310 | /* Set on error. */ |
99877b66 | 3311 | unsigned int stub_error:1; |
721956f4 AM |
3312 | |
3313 | /* Flag set when small branches are detected. Used to | |
3314 | select suitable defaults for the stub group size. */ | |
99877b66 AM |
3315 | unsigned int has_14bit_branch:1; |
3316 | ||
3317 | /* Temp used by ppc64_elf_check_directives. */ | |
3318 | unsigned int twiddled_syms:1; | |
721956f4 AM |
3319 | |
3320 | /* Incremented every time we size stubs. */ | |
3321 | unsigned int stub_iteration; | |
5d1634d7 | 3322 | |
ec338859 AM |
3323 | /* Small local sym to section mapping cache. */ |
3324 | struct sym_sec_cache sym_sec; | |
65f38f15 AM |
3325 | }; |
3326 | ||
4c52953f AM |
3327 | /* Rename some of the generic section flags to better document how they |
3328 | are used here. */ | |
3329 | #define has_toc_reloc has_gp_reloc | |
3330 | #define makes_toc_func_call need_finalize_relax | |
3331 | #define call_check_in_progress reloc_done | |
3332 | ||
65f38f15 AM |
3333 | /* Get the ppc64 ELF linker hash table from a link_info structure. */ |
3334 | ||
3335 | #define ppc_hash_table(p) \ | |
3336 | ((struct ppc_link_hash_table *) ((p)->hash)) | |
3337 | ||
721956f4 AM |
3338 | #define ppc_stub_hash_lookup(table, string, create, copy) \ |
3339 | ((struct ppc_stub_hash_entry *) \ | |
3340 | bfd_hash_lookup ((table), (string), (create), (copy))) | |
3341 | ||
3342 | #define ppc_branch_hash_lookup(table, string, create, copy) \ | |
3343 | ((struct ppc_branch_hash_entry *) \ | |
3344 | bfd_hash_lookup ((table), (string), (create), (copy))) | |
3345 | ||
3346 | /* Create an entry in the stub hash table. */ | |
3347 | ||
3348 | static struct bfd_hash_entry * | |
4ce794b7 AM |
3349 | stub_hash_newfunc (struct bfd_hash_entry *entry, |
3350 | struct bfd_hash_table *table, | |
3351 | const char *string) | |
721956f4 AM |
3352 | { |
3353 | /* Allocate the structure if it has not already been allocated by a | |
3354 | subclass. */ | |
3355 | if (entry == NULL) | |
3356 | { | |
3357 | entry = bfd_hash_allocate (table, sizeof (struct ppc_stub_hash_entry)); | |
3358 | if (entry == NULL) | |
3359 | return entry; | |
3360 | } | |
3361 | ||
3362 | /* Call the allocation method of the superclass. */ | |
3363 | entry = bfd_hash_newfunc (entry, table, string); | |
3364 | if (entry != NULL) | |
3365 | { | |
3366 | struct ppc_stub_hash_entry *eh; | |
3367 | ||
3368 | /* Initialize the local fields. */ | |
3369 | eh = (struct ppc_stub_hash_entry *) entry; | |
ad8e1ba5 | 3370 | eh->stub_type = ppc_stub_none; |
721956f4 AM |
3371 | eh->stub_sec = NULL; |
3372 | eh->stub_offset = 0; | |
3373 | eh->target_value = 0; | |
3374 | eh->target_section = NULL; | |
721956f4 AM |
3375 | eh->h = NULL; |
3376 | eh->id_sec = NULL; | |
3377 | } | |
3378 | ||
3379 | return entry; | |
3380 | } | |
3381 | ||
3382 | /* Create an entry in the branch hash table. */ | |
3383 | ||
3384 | static struct bfd_hash_entry * | |
4ce794b7 AM |
3385 | branch_hash_newfunc (struct bfd_hash_entry *entry, |
3386 | struct bfd_hash_table *table, | |
3387 | const char *string) | |
721956f4 AM |
3388 | { |
3389 | /* Allocate the structure if it has not already been allocated by a | |
3390 | subclass. */ | |
3391 | if (entry == NULL) | |
3392 | { | |
3393 | entry = bfd_hash_allocate (table, sizeof (struct ppc_branch_hash_entry)); | |
3394 | if (entry == NULL) | |
3395 | return entry; | |
3396 | } | |
3397 | ||
3398 | /* Call the allocation method of the superclass. */ | |
3399 | entry = bfd_hash_newfunc (entry, table, string); | |
3400 | if (entry != NULL) | |
3401 | { | |
3402 | struct ppc_branch_hash_entry *eh; | |
3403 | ||
3404 | /* Initialize the local fields. */ | |
3405 | eh = (struct ppc_branch_hash_entry *) entry; | |
3406 | eh->offset = 0; | |
3407 | eh->iter = 0; | |
3408 | } | |
3409 | ||
3410 | return entry; | |
3411 | } | |
3412 | ||
65f38f15 AM |
3413 | /* Create an entry in a ppc64 ELF linker hash table. */ |
3414 | ||
3415 | static struct bfd_hash_entry * | |
4ce794b7 AM |
3416 | link_hash_newfunc (struct bfd_hash_entry *entry, |
3417 | struct bfd_hash_table *table, | |
3418 | const char *string) | |
65f38f15 AM |
3419 | { |
3420 | /* Allocate the structure if it has not already been allocated by a | |
3421 | subclass. */ | |
3422 | if (entry == NULL) | |
3423 | { | |
3424 | entry = bfd_hash_allocate (table, sizeof (struct ppc_link_hash_entry)); | |
3425 | if (entry == NULL) | |
3426 | return entry; | |
3427 | } | |
3428 | ||
3429 | /* Call the allocation method of the superclass. */ | |
3430 | entry = _bfd_elf_link_hash_newfunc (entry, table, string); | |
3431 | if (entry != NULL) | |
3432 | { | |
3433 | struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) entry; | |
3434 | ||
908b32fc AM |
3435 | memset (&eh->stub_cache, 0, |
3436 | (sizeof (struct ppc_link_hash_entry) | |
3437 | - offsetof (struct ppc_link_hash_entry, stub_cache))); | |
65f38f15 AM |
3438 | } |
3439 | ||
3440 | return entry; | |
3441 | } | |
3442 | ||
3443 | /* Create a ppc64 ELF linker hash table. */ | |
3444 | ||
3445 | static struct bfd_link_hash_table * | |
4ce794b7 | 3446 | ppc64_elf_link_hash_table_create (bfd *abfd) |
65f38f15 AM |
3447 | { |
3448 | struct ppc_link_hash_table *htab; | |
3449 | bfd_size_type amt = sizeof (struct ppc_link_hash_table); | |
3450 | ||
4ce794b7 | 3451 | htab = bfd_zmalloc (amt); |
65f38f15 AM |
3452 | if (htab == NULL) |
3453 | return NULL; | |
3454 | ||
3455 | if (! _bfd_elf_link_hash_table_init (&htab->elf, abfd, link_hash_newfunc)) | |
3456 | { | |
e2d34d7d | 3457 | free (htab); |
65f38f15 AM |
3458 | return NULL; |
3459 | } | |
3460 | ||
721956f4 AM |
3461 | /* Init the stub hash table too. */ |
3462 | if (!bfd_hash_table_init (&htab->stub_hash_table, stub_hash_newfunc)) | |
3463 | return NULL; | |
3464 | ||
3465 | /* And the branch hash table. */ | |
3466 | if (!bfd_hash_table_init (&htab->branch_hash_table, branch_hash_newfunc)) | |
3467 | return NULL; | |
3468 | ||
3254fd24 AM |
3469 | /* Initializing two fields of the union is just cosmetic. We really |
3470 | only care about glist, but when compiled on a 32-bit host the | |
3471 | bfd_vma fields are larger. Setting the bfd_vma to zero makes | |
3472 | debugger inspection of these fields look nicer. */ | |
3473 | htab->elf.init_refcount.refcount = 0; | |
3474 | htab->elf.init_refcount.glist = NULL; | |
3475 | htab->elf.init_offset.offset = 0; | |
3476 | htab->elf.init_offset.glist = NULL; | |
3477 | ||
65f38f15 AM |
3478 | return &htab->elf.root; |
3479 | } | |
3480 | ||
721956f4 AM |
3481 | /* Free the derived linker hash table. */ |
3482 | ||
3483 | static void | |
4ce794b7 | 3484 | ppc64_elf_link_hash_table_free (struct bfd_link_hash_table *hash) |
721956f4 AM |
3485 | { |
3486 | struct ppc_link_hash_table *ret = (struct ppc_link_hash_table *) hash; | |
3487 | ||
3488 | bfd_hash_table_free (&ret->stub_hash_table); | |
3489 | bfd_hash_table_free (&ret->branch_hash_table); | |
3490 | _bfd_generic_link_hash_table_free (hash); | |
3491 | } | |
3492 | ||
e717da7e AM |
3493 | /* Satisfy the ELF linker by filling in some fields in our fake bfd. */ |
3494 | ||
3495 | void | |
3496 | ppc64_elf_init_stub_bfd (bfd *abfd, struct bfd_link_info *info) | |
3497 | { | |
3498 | struct ppc_link_hash_table *htab; | |
3499 | ||
3500 | elf_elfheader (abfd)->e_ident[EI_CLASS] = ELFCLASS64; | |
3501 | ||
3502 | /* Always hook our dynamic sections into the first bfd, which is the | |
3503 | linker created stub bfd. This ensures that the GOT header is at | |
3504 | the start of the output TOC section. */ | |
3505 | htab = ppc_hash_table (info); | |
3506 | htab->stub_bfd = abfd; | |
3507 | htab->elf.dynobj = abfd; | |
3508 | } | |
3509 | ||
721956f4 AM |
3510 | /* Build a name for an entry in the stub hash table. */ |
3511 | ||
3512 | static char * | |
4ce794b7 AM |
3513 | ppc_stub_name (const asection *input_section, |
3514 | const asection *sym_sec, | |
3515 | const struct ppc_link_hash_entry *h, | |
3516 | const Elf_Internal_Rela *rel) | |
721956f4 AM |
3517 | { |
3518 | char *stub_name; | |
3519 | bfd_size_type len; | |
3520 | ||
3521 | /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31 | |
3522 | offsets from a sym as a branch target? In fact, we could | |
3523 | probably assume the addend is always zero. */ | |
3524 | BFD_ASSERT (((int) rel->r_addend & 0xffffffff) == rel->r_addend); | |
3525 | ||
3526 | if (h) | |
3527 | { | |
3528 | len = 8 + 1 + strlen (h->elf.root.root.string) + 1 + 8 + 1; | |
3529 | stub_name = bfd_malloc (len); | |
3530 | if (stub_name != NULL) | |
3531 | { | |
97b639ba | 3532 | sprintf (stub_name, "%08x.%s+%x", |
721956f4 AM |
3533 | input_section->id & 0xffffffff, |
3534 | h->elf.root.root.string, | |
3535 | (int) rel->r_addend & 0xffffffff); | |
3536 | } | |
3537 | } | |
3538 | else | |
3539 | { | |
ad8e1ba5 | 3540 | len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1; |
721956f4 AM |
3541 | stub_name = bfd_malloc (len); |
3542 | if (stub_name != NULL) | |
3543 | { | |
97b639ba | 3544 | sprintf (stub_name, "%08x.%x:%x+%x", |
721956f4 AM |
3545 | input_section->id & 0xffffffff, |
3546 | sym_sec->id & 0xffffffff, | |
3547 | (int) ELF64_R_SYM (rel->r_info) & 0xffffffff, | |
3548 | (int) rel->r_addend & 0xffffffff); | |
3549 | } | |
3550 | } | |
ee75fd95 AM |
3551 | if (stub_name[len - 2] == '+' && stub_name[len - 1] == '0') |
3552 | stub_name[len - 2] = 0; | |
721956f4 AM |
3553 | return stub_name; |
3554 | } | |
3555 | ||
3556 | /* Look up an entry in the stub hash. Stub entries are cached because | |
3557 | creating the stub name takes a bit of time. */ | |
3558 | ||
3559 | static struct ppc_stub_hash_entry * | |
4ce794b7 AM |
3560 | ppc_get_stub_entry (const asection *input_section, |
3561 | const asection *sym_sec, | |
039b3fef | 3562 | struct ppc_link_hash_entry *h, |
4ce794b7 AM |
3563 | const Elf_Internal_Rela *rel, |
3564 | struct ppc_link_hash_table *htab) | |
721956f4 AM |
3565 | { |
3566 | struct ppc_stub_hash_entry *stub_entry; | |
721956f4 AM |
3567 | const asection *id_sec; |
3568 | ||
3569 | /* If this input section is part of a group of sections sharing one | |
3570 | stub section, then use the id of the first section in the group. | |
3571 | Stub names need to include a section id, as there may well be | |
3572 | more than one stub used to reach say, printf, and we need to | |
3573 | distinguish between them. */ | |
3574 | id_sec = htab->stub_group[input_section->id].link_sec; | |
3575 | ||
3576 | if (h != NULL && h->stub_cache != NULL | |
3577 | && h->stub_cache->h == h | |
3578 | && h->stub_cache->id_sec == id_sec) | |
3579 | { | |
3580 | stub_entry = h->stub_cache; | |
3581 | } | |
3582 | else | |
3583 | { | |
3584 | char *stub_name; | |
3585 | ||
3586 | stub_name = ppc_stub_name (id_sec, sym_sec, h, rel); | |
3587 | if (stub_name == NULL) | |
3588 | return NULL; | |
3589 | ||
3590 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, | |
b34976b6 | 3591 | stub_name, FALSE, FALSE); |
721956f4 AM |
3592 | if (h != NULL) |
3593 | h->stub_cache = stub_entry; | |
3594 | ||
3595 | free (stub_name); | |
3596 | } | |
3597 | ||
3598 | return stub_entry; | |
3599 | } | |
3600 | ||
3601 | /* Add a new stub entry to the stub hash. Not all fields of the new | |
3602 | stub entry are initialised. */ | |
3603 | ||
3604 | static struct ppc_stub_hash_entry * | |
4ce794b7 AM |
3605 | ppc_add_stub (const char *stub_name, |
3606 | asection *section, | |
3607 | struct ppc_link_hash_table *htab) | |
721956f4 AM |
3608 | { |
3609 | asection *link_sec; | |
3610 | asection *stub_sec; | |
3611 | struct ppc_stub_hash_entry *stub_entry; | |
3612 | ||
3613 | link_sec = htab->stub_group[section->id].link_sec; | |
3614 | stub_sec = htab->stub_group[section->id].stub_sec; | |
3615 | if (stub_sec == NULL) | |
3616 | { | |
3617 | stub_sec = htab->stub_group[link_sec->id].stub_sec; | |
3618 | if (stub_sec == NULL) | |
3619 | { | |
d4c88bbb | 3620 | size_t namelen; |
721956f4 AM |
3621 | bfd_size_type len; |
3622 | char *s_name; | |
3623 | ||
d4c88bbb AM |
3624 | namelen = strlen (link_sec->name); |
3625 | len = namelen + sizeof (STUB_SUFFIX); | |
721956f4 AM |
3626 | s_name = bfd_alloc (htab->stub_bfd, len); |
3627 | if (s_name == NULL) | |
3628 | return NULL; | |
3629 | ||
d4c88bbb AM |
3630 | memcpy (s_name, link_sec->name, namelen); |
3631 | memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX)); | |
721956f4 AM |
3632 | stub_sec = (*htab->add_stub_section) (s_name, link_sec); |
3633 | if (stub_sec == NULL) | |
3634 | return NULL; | |
3635 | htab->stub_group[link_sec->id].stub_sec = stub_sec; | |
3636 | } | |
3637 | htab->stub_group[section->id].stub_sec = stub_sec; | |
3638 | } | |
3639 | ||
3640 | /* Enter this entry into the linker stub hash table. */ | |
3641 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, stub_name, | |
b34976b6 | 3642 | TRUE, FALSE); |
721956f4 AM |
3643 | if (stub_entry == NULL) |
3644 | { | |
d003868e AM |
3645 | (*_bfd_error_handler) (_("%B: cannot create stub entry %s"), |
3646 | section->owner, stub_name); | |
721956f4 AM |
3647 | return NULL; |
3648 | } | |
3649 | ||
3650 | stub_entry->stub_sec = stub_sec; | |
3651 | stub_entry->stub_offset = 0; | |
3652 | stub_entry->id_sec = link_sec; | |
3653 | return stub_entry; | |
3654 | } | |
3655 | ||
82bd7b59 AM |
3656 | /* Create sections for linker generated code. */ |
3657 | ||
b34976b6 | 3658 | static bfd_boolean |
4ce794b7 | 3659 | create_linkage_sections (bfd *dynobj, struct bfd_link_info *info) |
82bd7b59 AM |
3660 | { |
3661 | struct ppc_link_hash_table *htab; | |
3662 | flagword flags; | |
3663 | ||
3664 | htab = ppc_hash_table (info); | |
3665 | ||
3666 | /* Create .sfpr for code to save and restore fp regs. */ | |
3667 | flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY | |
3668 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
3496cb2a L |
3669 | htab->sfpr = bfd_make_section_anyway_with_flags (dynobj, ".sfpr", |
3670 | flags); | |
82bd7b59 | 3671 | if (htab->sfpr == NULL |
82bd7b59 | 3672 | || ! bfd_set_section_alignment (dynobj, htab->sfpr, 2)) |
b34976b6 | 3673 | return FALSE; |
82bd7b59 | 3674 | |
721956f4 | 3675 | /* Create .glink for lazy dynamic linking support. */ |
3496cb2a L |
3676 | htab->glink = bfd_make_section_anyway_with_flags (dynobj, ".glink", |
3677 | flags); | |
4ce794b7 | 3678 | if (htab->glink == NULL |
4ce794b7 | 3679 | || ! bfd_set_section_alignment (dynobj, htab->glink, 2)) |
b34976b6 | 3680 | return FALSE; |
82bd7b59 | 3681 | |
721956f4 AM |
3682 | /* Create .branch_lt for plt_branch stubs. */ |
3683 | flags = (SEC_ALLOC | SEC_LOAD | |
3684 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
3496cb2a L |
3685 | htab->brlt = bfd_make_section_anyway_with_flags (dynobj, ".branch_lt", |
3686 | flags); | |
4ce794b7 | 3687 | if (htab->brlt == NULL |
4ce794b7 | 3688 | || ! bfd_set_section_alignment (dynobj, htab->brlt, 3)) |
b34976b6 | 3689 | return FALSE; |
721956f4 | 3690 | |
ee75fd95 | 3691 | if (info->shared || info->emitrelocations) |
721956f4 AM |
3692 | { |
3693 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | |
3694 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
3496cb2a L |
3695 | htab->relbrlt = bfd_make_section_anyway_with_flags (dynobj, |
3696 | ".rela.branch_lt", | |
3697 | flags); | |
4ce794b7 | 3698 | if (!htab->relbrlt |
4ce794b7 | 3699 | || ! bfd_set_section_alignment (dynobj, htab->relbrlt, 3)) |
b34976b6 | 3700 | return FALSE; |
721956f4 | 3701 | } |
b34976b6 | 3702 | return TRUE; |
82bd7b59 AM |
3703 | } |
3704 | ||
e717da7e AM |
3705 | /* Create .got and .rela.got sections in ABFD, and .got in dynobj if |
3706 | not already done. */ | |
65f38f15 | 3707 | |
b34976b6 | 3708 | static bfd_boolean |
e717da7e | 3709 | create_got_section (bfd *abfd, struct bfd_link_info *info) |
65f38f15 | 3710 | { |
e717da7e AM |
3711 | asection *got, *relgot; |
3712 | flagword flags; | |
3713 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
65f38f15 | 3714 | |
4ce794b7 | 3715 | if (!htab->got) |
e717da7e AM |
3716 | { |
3717 | if (! _bfd_elf_create_got_section (htab->elf.dynobj, info)) | |
3718 | return FALSE; | |
3719 | ||
3720 | htab->got = bfd_get_section_by_name (htab->elf.dynobj, ".got"); | |
3721 | if (!htab->got) | |
3722 | abort (); | |
3723 | } | |
3724 | ||
3725 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY | |
3726 | | SEC_LINKER_CREATED); | |
3727 | ||
3496cb2a | 3728 | got = bfd_make_section_with_flags (abfd, ".got", flags); |
e717da7e | 3729 | if (!got |
e717da7e AM |
3730 | || !bfd_set_section_alignment (abfd, got, 3)) |
3731 | return FALSE; | |
65f38f15 | 3732 | |
3496cb2a L |
3733 | relgot = bfd_make_section_with_flags (abfd, ".rela.got", |
3734 | flags | SEC_READONLY); | |
e717da7e | 3735 | if (!relgot |
e717da7e | 3736 | || ! bfd_set_section_alignment (abfd, relgot, 3)) |
b34976b6 | 3737 | return FALSE; |
e717da7e AM |
3738 | |
3739 | ppc64_elf_tdata (abfd)->got = got; | |
3740 | ppc64_elf_tdata (abfd)->relgot = relgot; | |
b34976b6 | 3741 | return TRUE; |
65f38f15 | 3742 | } |
5bd4f169 | 3743 | |
82bd7b59 | 3744 | /* Create the dynamic sections, and set up shortcuts. */ |
5bd4f169 | 3745 | |
b34976b6 | 3746 | static bfd_boolean |
4ce794b7 | 3747 | ppc64_elf_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info) |
5bd4f169 | 3748 | { |
65f38f15 | 3749 | struct ppc_link_hash_table *htab; |
5bd4f169 | 3750 | |
65f38f15 | 3751 | if (!_bfd_elf_create_dynamic_sections (dynobj, info)) |
b34976b6 | 3752 | return FALSE; |
65f38f15 | 3753 | |
e717da7e AM |
3754 | htab = ppc_hash_table (info); |
3755 | if (!htab->got) | |
3756 | htab->got = bfd_get_section_by_name (dynobj, ".got"); | |
4ce794b7 AM |
3757 | htab->plt = bfd_get_section_by_name (dynobj, ".plt"); |
3758 | htab->relplt = bfd_get_section_by_name (dynobj, ".rela.plt"); | |
3759 | htab->dynbss = bfd_get_section_by_name (dynobj, ".dynbss"); | |
65f38f15 | 3760 | if (!info->shared) |
4ce794b7 | 3761 | htab->relbss = bfd_get_section_by_name (dynobj, ".rela.bss"); |
65f38f15 | 3762 | |
e717da7e | 3763 | if (!htab->got || !htab->plt || !htab->relplt || !htab->dynbss |
4ce794b7 | 3764 | || (!info->shared && !htab->relbss)) |
65f38f15 AM |
3765 | abort (); |
3766 | ||
b34976b6 | 3767 | return TRUE; |
5bd4f169 AM |
3768 | } |
3769 | ||
40d16e0b AM |
3770 | /* Merge PLT info on FROM with that on TO. */ |
3771 | ||
3772 | static void | |
3773 | move_plt_plist (struct ppc_link_hash_entry *from, | |
3774 | struct ppc_link_hash_entry *to) | |
3775 | { | |
3776 | if (from->elf.plt.plist != NULL) | |
3777 | { | |
3778 | if (to->elf.plt.plist != NULL) | |
3779 | { | |
3780 | struct plt_entry **entp; | |
3781 | struct plt_entry *ent; | |
3782 | ||
3783 | for (entp = &from->elf.plt.plist; (ent = *entp) != NULL; ) | |
3784 | { | |
3785 | struct plt_entry *dent; | |
3786 | ||
3787 | for (dent = to->elf.plt.plist; dent != NULL; dent = dent->next) | |
3788 | if (dent->addend == ent->addend) | |
3789 | { | |
3790 | dent->plt.refcount += ent->plt.refcount; | |
3791 | *entp = ent->next; | |
3792 | break; | |
3793 | } | |
3794 | if (dent == NULL) | |
3795 | entp = &ent->next; | |
3796 | } | |
3797 | *entp = to->elf.plt.plist; | |
3798 | } | |
3799 | ||
3800 | to->elf.plt.plist = from->elf.plt.plist; | |
3801 | from->elf.plt.plist = NULL; | |
3802 | } | |
3803 | } | |
3804 | ||
65f38f15 AM |
3805 | /* Copy the extra info we tack onto an elf_link_hash_entry. */ |
3806 | ||
3807 | static void | |
9c5bfbb7 AM |
3808 | ppc64_elf_copy_indirect_symbol |
3809 | (const struct elf_backend_data *bed ATTRIBUTE_UNUSED, | |
3810 | struct elf_link_hash_entry *dir, | |
3811 | struct elf_link_hash_entry *ind) | |
65f38f15 AM |
3812 | { |
3813 | struct ppc_link_hash_entry *edir, *eind; | |
3814 | ||
3815 | edir = (struct ppc_link_hash_entry *) dir; | |
3816 | eind = (struct ppc_link_hash_entry *) ind; | |
3817 | ||
411e1bfb | 3818 | /* Copy over any dynamic relocs we may have on the indirect sym. */ |
bbd7ec4a | 3819 | if (eind->dyn_relocs != NULL) |
65f38f15 | 3820 | { |
bbd7ec4a AM |
3821 | if (edir->dyn_relocs != NULL) |
3822 | { | |
3823 | struct ppc_dyn_relocs **pp; | |
3824 | struct ppc_dyn_relocs *p; | |
3825 | ||
411e1bfb | 3826 | if (eind->elf.root.type == bfd_link_hash_indirect) |
bbd7ec4a AM |
3827 | abort (); |
3828 | ||
3829 | /* Add reloc counts against the weak sym to the strong sym | |
3830 | list. Merge any entries against the same section. */ | |
3831 | for (pp = &eind->dyn_relocs; (p = *pp) != NULL; ) | |
3832 | { | |
3833 | struct ppc_dyn_relocs *q; | |
3834 | ||
3835 | for (q = edir->dyn_relocs; q != NULL; q = q->next) | |
3836 | if (q->sec == p->sec) | |
3837 | { | |
3838 | q->pc_count += p->pc_count; | |
3839 | q->count += p->count; | |
3840 | *pp = p->next; | |
3841 | break; | |
3842 | } | |
3843 | if (q == NULL) | |
3844 | pp = &p->next; | |
3845 | } | |
3846 | *pp = edir->dyn_relocs; | |
3847 | } | |
3848 | ||
65f38f15 AM |
3849 | edir->dyn_relocs = eind->dyn_relocs; |
3850 | eind->dyn_relocs = NULL; | |
3851 | } | |
65f38f15 | 3852 | |
6349e628 AM |
3853 | edir->is_func |= eind->is_func; |
3854 | edir->is_func_descriptor |= eind->is_func_descriptor; | |
58ac9f71 | 3855 | edir->tls_mask |= eind->tls_mask; |
6349e628 | 3856 | |
81848ca0 | 3857 | /* If called to transfer flags for a weakdef during processing |
f5385ebf | 3858 | of elf_adjust_dynamic_symbol, don't copy NON_GOT_REF. |
81848ca0 | 3859 | We clear it ourselves for ELIMINATE_COPY_RELOCS. */ |
f5385ebf AM |
3860 | if (!(ELIMINATE_COPY_RELOCS |
3861 | && eind->elf.root.type != bfd_link_hash_indirect | |
3862 | && edir->elf.dynamic_adjusted)) | |
3863 | edir->elf.non_got_ref |= eind->elf.non_got_ref; | |
81848ca0 | 3864 | |
f5385ebf AM |
3865 | edir->elf.ref_dynamic |= eind->elf.ref_dynamic; |
3866 | edir->elf.ref_regular |= eind->elf.ref_regular; | |
3867 | edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak; | |
3868 | edir->elf.needs_plt |= eind->elf.needs_plt; | |
6349e628 AM |
3869 | |
3870 | /* If we were called to copy over info for a weak sym, that's all. */ | |
3871 | if (eind->elf.root.type != bfd_link_hash_indirect) | |
3872 | return; | |
3873 | ||
81848ca0 AM |
3874 | /* Copy over got entries that we may have already seen to the |
3875 | symbol which just became indirect. */ | |
411e1bfb AM |
3876 | if (eind->elf.got.glist != NULL) |
3877 | { | |
3878 | if (edir->elf.got.glist != NULL) | |
3879 | { | |
3880 | struct got_entry **entp; | |
3881 | struct got_entry *ent; | |
3882 | ||
3883 | for (entp = &eind->elf.got.glist; (ent = *entp) != NULL; ) | |
3884 | { | |
3885 | struct got_entry *dent; | |
3886 | ||
3887 | for (dent = edir->elf.got.glist; dent != NULL; dent = dent->next) | |
3888 | if (dent->addend == ent->addend | |
e717da7e | 3889 | && dent->owner == ent->owner |
411e1bfb AM |
3890 | && dent->tls_type == ent->tls_type) |
3891 | { | |
3892 | dent->got.refcount += ent->got.refcount; | |
3893 | *entp = ent->next; | |
3894 | break; | |
3895 | } | |
3896 | if (dent == NULL) | |
3897 | entp = &ent->next; | |
3898 | } | |
3899 | *entp = edir->elf.got.glist; | |
3900 | } | |
3901 | ||
3902 | edir->elf.got.glist = eind->elf.got.glist; | |
3903 | eind->elf.got.glist = NULL; | |
3904 | } | |
3905 | ||
3906 | /* And plt entries. */ | |
40d16e0b | 3907 | move_plt_plist (eind, edir); |
411e1bfb | 3908 | |
411e1bfb AM |
3909 | if (edir->elf.dynindx == -1) |
3910 | { | |
3911 | edir->elf.dynindx = eind->elf.dynindx; | |
3912 | edir->elf.dynstr_index = eind->elf.dynstr_index; | |
3913 | eind->elf.dynindx = -1; | |
3914 | eind->elf.dynstr_index = 0; | |
3915 | } | |
3916 | else | |
3917 | BFD_ASSERT (eind->elf.dynindx == -1); | |
3918 | } | |
3919 | ||
8387904d AM |
3920 | /* Find the function descriptor hash entry from the given function code |
3921 | hash entry FH. Link the entries via their OH fields. */ | |
3922 | ||
3923 | static struct ppc_link_hash_entry * | |
3924 | get_fdh (struct ppc_link_hash_entry *fh, struct ppc_link_hash_table *htab) | |
3925 | { | |
3926 | struct ppc_link_hash_entry *fdh = fh->oh; | |
3927 | ||
3928 | if (fdh == NULL) | |
3929 | { | |
3930 | const char *fd_name = fh->elf.root.root.string + 1; | |
3931 | ||
3932 | fdh = (struct ppc_link_hash_entry *) | |
3933 | elf_link_hash_lookup (&htab->elf, fd_name, FALSE, FALSE, FALSE); | |
3934 | if (fdh != NULL) | |
3935 | { | |
3936 | fdh->is_func_descriptor = 1; | |
3937 | fdh->oh = fh; | |
3938 | fh->is_func = 1; | |
3939 | fh->oh = fdh; | |
3940 | } | |
3941 | } | |
3942 | ||
3943 | return fdh; | |
3944 | } | |
3945 | ||
bb700d78 AM |
3946 | /* Make a fake function descriptor sym for the code sym FH. */ |
3947 | ||
3948 | static struct ppc_link_hash_entry * | |
3949 | make_fdh (struct bfd_link_info *info, | |
908b32fc | 3950 | struct ppc_link_hash_entry *fh) |
bb700d78 AM |
3951 | { |
3952 | bfd *abfd; | |
3953 | asymbol *newsym; | |
3954 | struct bfd_link_hash_entry *bh; | |
3955 | struct ppc_link_hash_entry *fdh; | |
3956 | ||
3957 | abfd = fh->elf.root.u.undef.abfd; | |
3958 | newsym = bfd_make_empty_symbol (abfd); | |
3959 | newsym->name = fh->elf.root.root.string + 1; | |
3960 | newsym->section = bfd_und_section_ptr; | |
3961 | newsym->value = 0; | |
908b32fc | 3962 | newsym->flags = BSF_WEAK; |
bb700d78 AM |
3963 | |
3964 | bh = NULL; | |
3965 | if (!_bfd_generic_link_add_one_symbol (info, abfd, newsym->name, | |
3966 | newsym->flags, newsym->section, | |
3967 | newsym->value, NULL, FALSE, FALSE, | |
3968 | &bh)) | |
3969 | return NULL; | |
3970 | ||
3971 | fdh = (struct ppc_link_hash_entry *) bh; | |
3972 | fdh->elf.non_elf = 0; | |
908b32fc AM |
3973 | fdh->fake = 1; |
3974 | fdh->is_func_descriptor = 1; | |
3975 | fdh->oh = fh; | |
3976 | fh->is_func = 1; | |
3977 | fh->oh = fdh; | |
bb700d78 AM |
3978 | return fdh; |
3979 | } | |
3980 | ||
8387904d AM |
3981 | /* Hacks to support old ABI code. |
3982 | When making function calls, old ABI code references function entry | |
3983 | points (dot symbols), while new ABI code references the function | |
3984 | descriptor symbol. We need to make any combination of reference and | |
3985 | definition work together, without breaking archive linking. | |
3986 | ||
3987 | For a defined function "foo" and an undefined call to "bar": | |
3988 | An old object defines "foo" and ".foo", references ".bar" (possibly | |
3989 | "bar" too). | |
3990 | A new object defines "foo" and references "bar". | |
3991 | ||
3992 | A new object thus has no problem with its undefined symbols being | |
3993 | satisfied by definitions in an old object. On the other hand, the | |
3994 | old object won't have ".bar" satisfied by a new object. */ | |
3995 | ||
3996 | /* Fix function descriptor symbols defined in .opd sections to be | |
3997 | function type. */ | |
555cd476 AM |
3998 | |
3999 | static bfd_boolean | |
4000 | ppc64_elf_add_symbol_hook (bfd *ibfd ATTRIBUTE_UNUSED, | |
4001 | struct bfd_link_info *info ATTRIBUTE_UNUSED, | |
4002 | Elf_Internal_Sym *isym, | |
4003 | const char **name ATTRIBUTE_UNUSED, | |
4004 | flagword *flags ATTRIBUTE_UNUSED, | |
4005 | asection **sec, | |
4006 | bfd_vma *value ATTRIBUTE_UNUSED) | |
4007 | { | |
8843416a AM |
4008 | if (*sec != NULL |
4009 | && strcmp (bfd_get_section_name (ibfd, *sec), ".opd") == 0) | |
555cd476 AM |
4010 | isym->st_info = ELF_ST_INFO (ELF_ST_BIND (isym->st_info), STT_FUNC); |
4011 | return TRUE; | |
4012 | } | |
4013 | ||
8387904d | 4014 | /* This function makes an old ABI object reference to ".bar" cause the |
908b32fc AM |
4015 | inclusion of a new ABI object archive that defines "bar". |
4016 | NAME is a symbol defined in an archive. Return a symbol in the hash | |
4017 | table that might be satisfied by the archive symbols. */ | |
8387904d AM |
4018 | |
4019 | static struct elf_link_hash_entry * | |
4020 | ppc64_elf_archive_symbol_lookup (bfd *abfd, | |
4021 | struct bfd_link_info *info, | |
4022 | const char *name) | |
4023 | { | |
4024 | struct elf_link_hash_entry *h; | |
4025 | char *dot_name; | |
4026 | size_t len; | |
4027 | ||
4028 | h = _bfd_elf_archive_symbol_lookup (abfd, info, name); | |
908b32fc AM |
4029 | if (h != NULL |
4030 | /* Don't return this sym if it is a fake function descriptor | |
4031 | created by add_symbol_adjust. */ | |
4032 | && !(h->root.type == bfd_link_hash_undefweak | |
4033 | && ((struct ppc_link_hash_entry *) h)->fake)) | |
8387904d AM |
4034 | return h; |
4035 | ||
4036 | if (name[0] == '.') | |
4037 | return h; | |
4038 | ||
4039 | len = strlen (name); | |
4040 | dot_name = bfd_alloc (abfd, len + 2); | |
4041 | if (dot_name == NULL) | |
4042 | return (struct elf_link_hash_entry *) 0 - 1; | |
4043 | dot_name[0] = '.'; | |
4044 | memcpy (dot_name + 1, name, len + 1); | |
4045 | h = _bfd_elf_archive_symbol_lookup (abfd, info, dot_name); | |
4046 | bfd_release (abfd, dot_name); | |
4047 | return h; | |
4048 | } | |
4049 | ||
4050 | /* This function satisfies all old ABI object references to ".bar" if a | |
99877b66 AM |
4051 | new ABI object defines "bar". Well, at least, undefined dot symbols |
4052 | are made weak. This stops later archive searches from including an | |
4053 | object if we already have a function descriptor definition. It also | |
35b0ce59 AM |
4054 | prevents the linker complaining about undefined symbols. |
4055 | We also check and correct mismatched symbol visibility here. The | |
4056 | most restrictive visibility of the function descriptor and the | |
4057 | function entry symbol is used. */ | |
8387904d | 4058 | |
bb700d78 AM |
4059 | struct add_symbol_adjust_data |
4060 | { | |
4061 | struct bfd_link_info *info; | |
4062 | bfd_boolean ok; | |
4063 | }; | |
4064 | ||
8387904d AM |
4065 | static bfd_boolean |
4066 | add_symbol_adjust (struct elf_link_hash_entry *h, void *inf) | |
4067 | { | |
bb700d78 | 4068 | struct add_symbol_adjust_data *data; |
8387904d | 4069 | struct ppc_link_hash_table *htab; |
99877b66 | 4070 | struct ppc_link_hash_entry *eh; |
8387904d AM |
4071 | struct ppc_link_hash_entry *fdh; |
4072 | ||
4073 | if (h->root.type == bfd_link_hash_indirect) | |
4074 | return TRUE; | |
4075 | ||
4076 | if (h->root.type == bfd_link_hash_warning) | |
4077 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
4078 | ||
35b0ce59 | 4079 | if (h->root.root.string[0] != '.') |
8387904d AM |
4080 | return TRUE; |
4081 | ||
bb700d78 AM |
4082 | data = inf; |
4083 | htab = ppc_hash_table (data->info); | |
99877b66 AM |
4084 | eh = (struct ppc_link_hash_entry *) h; |
4085 | fdh = get_fdh (eh, htab); | |
bb700d78 | 4086 | if (fdh == NULL |
c4f68ce3 | 4087 | && !data->info->relocatable |
bb700d78 AM |
4088 | && (eh->elf.root.type == bfd_link_hash_undefined |
4089 | || eh->elf.root.type == bfd_link_hash_undefweak) | |
4090 | && eh->elf.ref_regular) | |
4091 | { | |
4092 | /* Make an undefweak function descriptor sym, which is enough to | |
4093 | pull in an --as-needed shared lib, but won't cause link | |
4094 | errors. Archives are handled elsewhere. */ | |
908b32fc | 4095 | fdh = make_fdh (data->info, eh); |
bb700d78 AM |
4096 | if (fdh == NULL) |
4097 | data->ok = FALSE; | |
4098 | else | |
4099 | fdh->elf.ref_regular = 1; | |
4100 | } | |
c4f68ce3 AM |
4101 | else if (fdh != NULL |
4102 | && (fdh->elf.root.type == bfd_link_hash_defined | |
4103 | || fdh->elf.root.type == bfd_link_hash_defweak)) | |
8387904d | 4104 | { |
35b0ce59 AM |
4105 | unsigned entry_vis = ELF_ST_VISIBILITY (eh->elf.other) - 1; |
4106 | unsigned descr_vis = ELF_ST_VISIBILITY (fdh->elf.other) - 1; | |
4107 | if (entry_vis < descr_vis) | |
4108 | fdh->elf.other += entry_vis - descr_vis; | |
4109 | else if (entry_vis > descr_vis) | |
4110 | eh->elf.other += descr_vis - entry_vis; | |
4111 | ||
c4f68ce3 | 4112 | if (eh->elf.root.type == bfd_link_hash_undefined) |
35b0ce59 AM |
4113 | { |
4114 | eh->elf.root.type = bfd_link_hash_undefweak; | |
4115 | eh->was_undefined = 1; | |
4116 | htab->twiddled_syms = 1; | |
4117 | } | |
8387904d | 4118 | } |
99877b66 | 4119 | |
8387904d AM |
4120 | return TRUE; |
4121 | } | |
4122 | ||
4123 | static bfd_boolean | |
4124 | ppc64_elf_check_directives (bfd *abfd ATTRIBUTE_UNUSED, | |
4125 | struct bfd_link_info *info) | |
4126 | { | |
99877b66 | 4127 | struct ppc_link_hash_table *htab; |
bb700d78 | 4128 | struct add_symbol_adjust_data data; |
99877b66 AM |
4129 | |
4130 | htab = ppc_hash_table (info); | |
ee75fd95 | 4131 | if (!is_ppc64_elf_target (htab->elf.root.creator)) |
35b0ce59 AM |
4132 | return TRUE; |
4133 | ||
bb700d78 AM |
4134 | data.info = info; |
4135 | data.ok = TRUE; | |
4136 | elf_link_hash_traverse (&htab->elf, add_symbol_adjust, &data); | |
99877b66 AM |
4137 | |
4138 | /* We need to fix the undefs list for any syms we have twiddled to | |
4139 | undef_weak. */ | |
4140 | if (htab->twiddled_syms) | |
4141 | { | |
77cfaee6 | 4142 | bfd_link_repair_undef_list (&htab->elf.root); |
99877b66 AM |
4143 | htab->twiddled_syms = 0; |
4144 | } | |
bb700d78 | 4145 | return data.ok; |
8387904d AM |
4146 | } |
4147 | ||
411e1bfb | 4148 | static bfd_boolean |
4ce794b7 AM |
4149 | update_local_sym_info (bfd *abfd, Elf_Internal_Shdr *symtab_hdr, |
4150 | unsigned long r_symndx, bfd_vma r_addend, int tls_type) | |
411e1bfb AM |
4151 | { |
4152 | struct got_entry **local_got_ents = elf_local_got_ents (abfd); | |
e7b938ca | 4153 | char *local_got_tls_masks; |
411e1bfb AM |
4154 | |
4155 | if (local_got_ents == NULL) | |
4156 | { | |
4157 | bfd_size_type size = symtab_hdr->sh_info; | |
4158 | ||
e7b938ca | 4159 | size *= sizeof (*local_got_ents) + sizeof (*local_got_tls_masks); |
4ce794b7 | 4160 | local_got_ents = bfd_zalloc (abfd, size); |
411e1bfb AM |
4161 | if (local_got_ents == NULL) |
4162 | return FALSE; | |
4163 | elf_local_got_ents (abfd) = local_got_ents; | |
4164 | } | |
4165 | ||
4166 | if ((tls_type & TLS_EXPLICIT) == 0) | |
4167 | { | |
4168 | struct got_entry *ent; | |
4169 | ||
4170 | for (ent = local_got_ents[r_symndx]; ent != NULL; ent = ent->next) | |
e717da7e AM |
4171 | if (ent->addend == r_addend |
4172 | && ent->owner == abfd | |
4173 | && ent->tls_type == tls_type) | |
411e1bfb AM |
4174 | break; |
4175 | if (ent == NULL) | |
4176 | { | |
4177 | bfd_size_type amt = sizeof (*ent); | |
4ce794b7 | 4178 | ent = bfd_alloc (abfd, amt); |
411e1bfb AM |
4179 | if (ent == NULL) |
4180 | return FALSE; | |
4181 | ent->next = local_got_ents[r_symndx]; | |
4182 | ent->addend = r_addend; | |
e717da7e | 4183 | ent->owner = abfd; |
411e1bfb AM |
4184 | ent->tls_type = tls_type; |
4185 | ent->got.refcount = 0; | |
4186 | local_got_ents[r_symndx] = ent; | |
4187 | } | |
4188 | ent->got.refcount += 1; | |
4189 | } | |
4190 | ||
e7b938ca AM |
4191 | local_got_tls_masks = (char *) (local_got_ents + symtab_hdr->sh_info); |
4192 | local_got_tls_masks[r_symndx] |= tls_type; | |
411e1bfb | 4193 | return TRUE; |
65f38f15 AM |
4194 | } |
4195 | ||
411e1bfb | 4196 | static bfd_boolean |
4ce794b7 | 4197 | update_plt_info (bfd *abfd, struct ppc_link_hash_entry *eh, bfd_vma addend) |
1e2f5b6e | 4198 | { |
411e1bfb | 4199 | struct plt_entry *ent; |
1e2f5b6e | 4200 | |
411e1bfb AM |
4201 | for (ent = eh->elf.plt.plist; ent != NULL; ent = ent->next) |
4202 | if (ent->addend == addend) | |
4203 | break; | |
4204 | if (ent == NULL) | |
1e2f5b6e | 4205 | { |
411e1bfb | 4206 | bfd_size_type amt = sizeof (*ent); |
4ce794b7 | 4207 | ent = bfd_alloc (abfd, amt); |
411e1bfb AM |
4208 | if (ent == NULL) |
4209 | return FALSE; | |
4210 | ent->next = eh->elf.plt.plist; | |
4211 | ent->addend = addend; | |
4212 | ent->plt.refcount = 0; | |
4213 | eh->elf.plt.plist = ent; | |
1e2f5b6e | 4214 | } |
411e1bfb | 4215 | ent->plt.refcount += 1; |
f5385ebf | 4216 | eh->elf.needs_plt = 1; |
93f3fa99 AM |
4217 | if (eh->elf.root.root.string[0] == '.' |
4218 | && eh->elf.root.root.string[1] != '\0') | |
4219 | eh->is_func = 1; | |
b34976b6 | 4220 | return TRUE; |
1e2f5b6e AM |
4221 | } |
4222 | ||
5bd4f169 | 4223 | /* Look through the relocs for a section during the first phase, and |
65f38f15 | 4224 | calculate needed space in the global offset table, procedure |
5d1634d7 | 4225 | linkage table, and dynamic reloc sections. */ |
5bd4f169 | 4226 | |
b34976b6 | 4227 | static bfd_boolean |
4ce794b7 AM |
4228 | ppc64_elf_check_relocs (bfd *abfd, struct bfd_link_info *info, |
4229 | asection *sec, const Elf_Internal_Rela *relocs) | |
5bd4f169 | 4230 | { |
65f38f15 | 4231 | struct ppc_link_hash_table *htab; |
5bd4f169 AM |
4232 | Elf_Internal_Shdr *symtab_hdr; |
4233 | struct elf_link_hash_entry **sym_hashes, **sym_hashes_end; | |
4234 | const Elf_Internal_Rela *rel; | |
4235 | const Elf_Internal_Rela *rel_end; | |
5bd4f169 | 4236 | asection *sreloc; |
1e2f5b6e | 4237 | asection **opd_sym_map; |
5bd4f169 | 4238 | |
1049f94e | 4239 | if (info->relocatable) |
b34976b6 | 4240 | return TRUE; |
5bd4f169 | 4241 | |
680a3378 AM |
4242 | /* Don't do anything special with non-loaded, non-alloced sections. |
4243 | In particular, any relocs in such sections should not affect GOT | |
4244 | and PLT reference counting (ie. we don't allow them to create GOT | |
4245 | or PLT entries), there's no possibility or desire to optimize TLS | |
4246 | relocs, and there's not much point in propagating relocs to shared | |
4247 | libs that the dynamic linker won't relocate. */ | |
4248 | if ((sec->flags & SEC_ALLOC) == 0) | |
4249 | return TRUE; | |
4250 | ||
65f38f15 | 4251 | htab = ppc_hash_table (info); |
5bd4f169 | 4252 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
5bd4f169 AM |
4253 | |
4254 | sym_hashes = elf_sym_hashes (abfd); | |
4255 | sym_hashes_end = (sym_hashes | |
1e2f5b6e AM |
4256 | + symtab_hdr->sh_size / sizeof (Elf64_External_Sym) |
4257 | - symtab_hdr->sh_info); | |
5bd4f169 AM |
4258 | |
4259 | sreloc = NULL; | |
1e2f5b6e AM |
4260 | opd_sym_map = NULL; |
4261 | if (strcmp (bfd_get_section_name (abfd, sec), ".opd") == 0) | |
4262 | { | |
4263 | /* Garbage collection needs some extra help with .opd sections. | |
4264 | We don't want to necessarily keep everything referenced by | |
4265 | relocs in .opd, as that would keep all functions. Instead, | |
4266 | if we reference an .opd symbol (a function descriptor), we | |
4267 | want to keep the function code symbol's section. This is | |
4268 | easy for global symbols, but for local syms we need to keep | |
4269 | information about the associated function section. Later, if | |
4270 | edit_opd deletes entries, we'll use this array to adjust | |
4271 | local syms in .opd. */ | |
4272 | union opd_info { | |
4273 | asection *func_section; | |
4274 | long entry_adjust; | |
4275 | }; | |
4276 | bfd_size_type amt; | |
4277 | ||
3f764659 | 4278 | amt = sec->size * sizeof (union opd_info) / 8; |
4ce794b7 | 4279 | opd_sym_map = bfd_zalloc (abfd, amt); |
1e2f5b6e | 4280 | if (opd_sym_map == NULL) |
b34976b6 | 4281 | return FALSE; |
f0abc2a1 | 4282 | ppc64_elf_section_data (sec)->opd.func_sec = opd_sym_map; |
1e2f5b6e | 4283 | } |
5bd4f169 | 4284 | |
82bd7b59 AM |
4285 | if (htab->sfpr == NULL |
4286 | && !create_linkage_sections (htab->elf.dynobj, info)) | |
b34976b6 | 4287 | return FALSE; |
82bd7b59 | 4288 | |
5bd4f169 AM |
4289 | rel_end = relocs + sec->reloc_count; |
4290 | for (rel = relocs; rel < rel_end; rel++) | |
4291 | { | |
4292 | unsigned long r_symndx; | |
4293 | struct elf_link_hash_entry *h; | |
04c9666a | 4294 | enum elf_ppc64_reloc_type r_type; |
411e1bfb | 4295 | int tls_type = 0; |
5bd4f169 AM |
4296 | |
4297 | r_symndx = ELF64_R_SYM (rel->r_info); | |
4298 | if (r_symndx < symtab_hdr->sh_info) | |
4299 | h = NULL; | |
4300 | else | |
4301 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
4302 | ||
4ce794b7 | 4303 | r_type = ELF64_R_TYPE (rel->r_info); |
a33d1f77 | 4304 | switch (r_type) |
5bd4f169 | 4305 | { |
411e1bfb AM |
4306 | case R_PPC64_GOT_TLSLD16: |
4307 | case R_PPC64_GOT_TLSLD16_LO: | |
4308 | case R_PPC64_GOT_TLSLD16_HI: | |
4309 | case R_PPC64_GOT_TLSLD16_HA: | |
e717da7e | 4310 | ppc64_tlsld_got (abfd)->refcount += 1; |
951fd09b | 4311 | tls_type = TLS_TLS | TLS_LD; |
411e1bfb AM |
4312 | goto dogottls; |
4313 | ||
4314 | case R_PPC64_GOT_TLSGD16: | |
4315 | case R_PPC64_GOT_TLSGD16_LO: | |
4316 | case R_PPC64_GOT_TLSGD16_HI: | |
4317 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b | 4318 | tls_type = TLS_TLS | TLS_GD; |
411e1bfb AM |
4319 | goto dogottls; |
4320 | ||
4321 | case R_PPC64_GOT_TPREL16_DS: | |
4322 | case R_PPC64_GOT_TPREL16_LO_DS: | |
4323 | case R_PPC64_GOT_TPREL16_HI: | |
4324 | case R_PPC64_GOT_TPREL16_HA: | |
4325 | if (info->shared) | |
4326 | info->flags |= DF_STATIC_TLS; | |
4327 | tls_type = TLS_TLS | TLS_TPREL; | |
4328 | goto dogottls; | |
4329 | ||
4330 | case R_PPC64_GOT_DTPREL16_DS: | |
4331 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
4332 | case R_PPC64_GOT_DTPREL16_HI: | |
4333 | case R_PPC64_GOT_DTPREL16_HA: | |
4334 | tls_type = TLS_TLS | TLS_DTPREL; | |
4335 | dogottls: | |
4336 | sec->has_tls_reloc = 1; | |
4337 | /* Fall thru */ | |
4338 | ||
5bd4f169 | 4339 | case R_PPC64_GOT16: |
5bd4f169 | 4340 | case R_PPC64_GOT16_DS: |
65f38f15 AM |
4341 | case R_PPC64_GOT16_HA: |
4342 | case R_PPC64_GOT16_HI: | |
4343 | case R_PPC64_GOT16_LO: | |
5bd4f169 | 4344 | case R_PPC64_GOT16_LO_DS: |
65f38f15 | 4345 | /* This symbol requires a global offset table entry. */ |
4c52953f | 4346 | sec->has_toc_reloc = 1; |
e717da7e AM |
4347 | if (ppc64_elf_tdata (abfd)->got == NULL |
4348 | && !create_got_section (abfd, info)) | |
b34976b6 | 4349 | return FALSE; |
5bd4f169 AM |
4350 | |
4351 | if (h != NULL) | |
4352 | { | |
411e1bfb AM |
4353 | struct ppc_link_hash_entry *eh; |
4354 | struct got_entry *ent; | |
65f38f15 | 4355 | |
411e1bfb AM |
4356 | eh = (struct ppc_link_hash_entry *) h; |
4357 | for (ent = eh->elf.got.glist; ent != NULL; ent = ent->next) | |
4358 | if (ent->addend == rel->r_addend | |
e717da7e | 4359 | && ent->owner == abfd |
411e1bfb AM |
4360 | && ent->tls_type == tls_type) |
4361 | break; | |
4362 | if (ent == NULL) | |
5bd4f169 | 4363 | { |
411e1bfb | 4364 | bfd_size_type amt = sizeof (*ent); |
4ce794b7 | 4365 | ent = bfd_alloc (abfd, amt); |
411e1bfb | 4366 | if (ent == NULL) |
b34976b6 | 4367 | return FALSE; |
411e1bfb AM |
4368 | ent->next = eh->elf.got.glist; |
4369 | ent->addend = rel->r_addend; | |
e717da7e | 4370 | ent->owner = abfd; |
411e1bfb AM |
4371 | ent->tls_type = tls_type; |
4372 | ent->got.refcount = 0; | |
4373 | eh->elf.got.glist = ent; | |
5bd4f169 | 4374 | } |
411e1bfb | 4375 | ent->got.refcount += 1; |
e7b938ca | 4376 | eh->tls_mask |= tls_type; |
5bd4f169 | 4377 | } |
411e1bfb AM |
4378 | else |
4379 | /* This is a global offset table entry for a local symbol. */ | |
4380 | if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
4381 | rel->r_addend, tls_type)) | |
4382 | return FALSE; | |
5bd4f169 AM |
4383 | break; |
4384 | ||
5bd4f169 | 4385 | case R_PPC64_PLT16_HA: |
65f38f15 AM |
4386 | case R_PPC64_PLT16_HI: |
4387 | case R_PPC64_PLT16_LO: | |
4388 | case R_PPC64_PLT32: | |
4389 | case R_PPC64_PLT64: | |
5bd4f169 | 4390 | /* This symbol requires a procedure linkage table entry. We |
3fad3c7c AM |
4391 | actually build the entry in adjust_dynamic_symbol, |
4392 | because this might be a case of linking PIC code without | |
4393 | linking in any dynamic objects, in which case we don't | |
4394 | need to generate a procedure linkage table after all. */ | |
5bd4f169 AM |
4395 | if (h == NULL) |
4396 | { | |
4397 | /* It does not make sense to have a procedure linkage | |
3fad3c7c | 4398 | table entry for a local symbol. */ |
5bd4f169 | 4399 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 4400 | return FALSE; |
5bd4f169 | 4401 | } |
411e1bfb AM |
4402 | else |
4403 | if (!update_plt_info (abfd, (struct ppc_link_hash_entry *) h, | |
4404 | rel->r_addend)) | |
4405 | return FALSE; | |
5bd4f169 AM |
4406 | break; |
4407 | ||
4408 | /* The following relocations don't need to propagate the | |
4409 | relocation if linking a shared object since they are | |
4410 | section relative. */ | |
4411 | case R_PPC64_SECTOFF: | |
4412 | case R_PPC64_SECTOFF_LO: | |
4413 | case R_PPC64_SECTOFF_HI: | |
4414 | case R_PPC64_SECTOFF_HA: | |
4415 | case R_PPC64_SECTOFF_DS: | |
4416 | case R_PPC64_SECTOFF_LO_DS: | |
411e1bfb AM |
4417 | case R_PPC64_DTPREL16: |
4418 | case R_PPC64_DTPREL16_LO: | |
4419 | case R_PPC64_DTPREL16_HI: | |
4420 | case R_PPC64_DTPREL16_HA: | |
4421 | case R_PPC64_DTPREL16_DS: | |
4422 | case R_PPC64_DTPREL16_LO_DS: | |
4423 | case R_PPC64_DTPREL16_HIGHER: | |
4424 | case R_PPC64_DTPREL16_HIGHERA: | |
4425 | case R_PPC64_DTPREL16_HIGHEST: | |
4426 | case R_PPC64_DTPREL16_HIGHESTA: | |
5bd4f169 AM |
4427 | break; |
4428 | ||
ad8e1ba5 AM |
4429 | /* Nor do these. */ |
4430 | case R_PPC64_TOC16: | |
4431 | case R_PPC64_TOC16_LO: | |
4432 | case R_PPC64_TOC16_HI: | |
4433 | case R_PPC64_TOC16_HA: | |
4434 | case R_PPC64_TOC16_DS: | |
4435 | case R_PPC64_TOC16_LO_DS: | |
4c52953f | 4436 | sec->has_toc_reloc = 1; |
ad8e1ba5 AM |
4437 | break; |
4438 | ||
5bd4f169 AM |
4439 | /* This relocation describes the C++ object vtable hierarchy. |
4440 | Reconstruct it for later use during GC. */ | |
4441 | case R_PPC64_GNU_VTINHERIT: | |
c152c796 | 4442 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
b34976b6 | 4443 | return FALSE; |
5bd4f169 AM |
4444 | break; |
4445 | ||
4446 | /* This relocation describes which C++ vtable entries are actually | |
4447 | used. Record for later use during GC. */ | |
4448 | case R_PPC64_GNU_VTENTRY: | |
c152c796 | 4449 | if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) |
b34976b6 | 4450 | return FALSE; |
5bd4f169 AM |
4451 | break; |
4452 | ||
721956f4 AM |
4453 | case R_PPC64_REL14: |
4454 | case R_PPC64_REL14_BRTAKEN: | |
4455 | case R_PPC64_REL14_BRNTAKEN: | |
4456 | htab->has_14bit_branch = 1; | |
4457 | /* Fall through. */ | |
4458 | ||
5d1634d7 | 4459 | case R_PPC64_REL24: |
8387904d | 4460 | if (h != NULL) |
5d1634d7 AM |
4461 | { |
4462 | /* We may need a .plt entry if the function this reloc | |
4463 | refers to is in a shared lib. */ | |
411e1bfb AM |
4464 | if (!update_plt_info (abfd, (struct ppc_link_hash_entry *) h, |
4465 | rel->r_addend)) | |
4466 | return FALSE; | |
8387904d AM |
4467 | if (h == &htab->tls_get_addr->elf |
4468 | || h == &htab->tls_get_addr_fd->elf) | |
411e1bfb | 4469 | sec->has_tls_reloc = 1; |
8387904d AM |
4470 | else if (htab->tls_get_addr == NULL |
4471 | && !strncmp (h->root.root.string, ".__tls_get_addr", 15) | |
a48ebf4d AM |
4472 | && (h->root.root.string[15] == 0 |
4473 | || h->root.root.string[15] == '@')) | |
411e1bfb | 4474 | { |
8387904d AM |
4475 | htab->tls_get_addr = (struct ppc_link_hash_entry *) h; |
4476 | sec->has_tls_reloc = 1; | |
4477 | } | |
4478 | else if (htab->tls_get_addr_fd == NULL | |
4479 | && !strncmp (h->root.root.string, "__tls_get_addr", 14) | |
4480 | && (h->root.root.string[14] == 0 | |
4481 | || h->root.root.string[14] == '@')) | |
4482 | { | |
4483 | htab->tls_get_addr_fd = (struct ppc_link_hash_entry *) h; | |
411e1bfb AM |
4484 | sec->has_tls_reloc = 1; |
4485 | } | |
4486 | } | |
4487 | break; | |
4488 | ||
4489 | case R_PPC64_TPREL64: | |
4490 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_TPREL; | |
4491 | if (info->shared) | |
4492 | info->flags |= DF_STATIC_TLS; | |
4493 | goto dotlstoc; | |
4494 | ||
4495 | case R_PPC64_DTPMOD64: | |
4496 | if (rel + 1 < rel_end | |
4497 | && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64) | |
4498 | && rel[1].r_offset == rel->r_offset + 8) | |
951fd09b | 4499 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_GD; |
411e1bfb | 4500 | else |
951fd09b | 4501 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_LD; |
411e1bfb AM |
4502 | goto dotlstoc; |
4503 | ||
4504 | case R_PPC64_DTPREL64: | |
4505 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_DTPREL; | |
4506 | if (rel != relocs | |
4507 | && rel[-1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPMOD64) | |
4508 | && rel[-1].r_offset == rel->r_offset - 8) | |
4509 | /* This is the second reloc of a dtpmod, dtprel pair. | |
4510 | Don't mark with TLS_DTPREL. */ | |
4511 | goto dodyn; | |
4512 | ||
4513 | dotlstoc: | |
4514 | sec->has_tls_reloc = 1; | |
4515 | if (h != NULL) | |
4516 | { | |
4517 | struct ppc_link_hash_entry *eh; | |
4518 | eh = (struct ppc_link_hash_entry *) h; | |
e7b938ca | 4519 | eh->tls_mask |= tls_type; |
411e1bfb AM |
4520 | } |
4521 | else | |
4522 | if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
4523 | rel->r_addend, tls_type)) | |
4524 | return FALSE; | |
4525 | ||
4526 | if (ppc64_elf_section_data (sec)->t_symndx == NULL) | |
4527 | { | |
e7b938ca | 4528 | /* One extra to simplify get_tls_mask. */ |
eea6121a | 4529 | bfd_size_type amt = sec->size * sizeof (unsigned) / 8 + 1; |
4ce794b7 | 4530 | ppc64_elf_section_data (sec)->t_symndx = bfd_zalloc (abfd, amt); |
411e1bfb AM |
4531 | if (ppc64_elf_section_data (sec)->t_symndx == NULL) |
4532 | return FALSE; | |
4533 | } | |
4534 | BFD_ASSERT (rel->r_offset % 8 == 0); | |
4535 | ppc64_elf_section_data (sec)->t_symndx[rel->r_offset / 8] = r_symndx; | |
951fd09b AM |
4536 | |
4537 | /* Mark the second slot of a GD or LD entry. | |
4538 | -1 to indicate GD and -2 to indicate LD. */ | |
4539 | if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_GD)) | |
4540 | ppc64_elf_section_data (sec)->t_symndx[rel->r_offset / 8 + 1] = -1; | |
4541 | else if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_LD)) | |
4542 | ppc64_elf_section_data (sec)->t_symndx[rel->r_offset / 8 + 1] = -2; | |
411e1bfb AM |
4543 | goto dodyn; |
4544 | ||
4545 | case R_PPC64_TPREL16: | |
4546 | case R_PPC64_TPREL16_LO: | |
4547 | case R_PPC64_TPREL16_HI: | |
4548 | case R_PPC64_TPREL16_HA: | |
4549 | case R_PPC64_TPREL16_DS: | |
4550 | case R_PPC64_TPREL16_LO_DS: | |
4551 | case R_PPC64_TPREL16_HIGHER: | |
4552 | case R_PPC64_TPREL16_HIGHERA: | |
4553 | case R_PPC64_TPREL16_HIGHEST: | |
4554 | case R_PPC64_TPREL16_HIGHESTA: | |
4555 | if (info->shared) | |
4556 | { | |
4557 | info->flags |= DF_STATIC_TLS; | |
4558 | goto dodyn; | |
5d1634d7 AM |
4559 | } |
4560 | break; | |
4561 | ||
e86ce104 | 4562 | case R_PPC64_ADDR64: |
1e2f5b6e | 4563 | if (opd_sym_map != NULL |
1e2f5b6e | 4564 | && rel + 1 < rel_end |
4ce794b7 | 4565 | && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC) |
1e2f5b6e | 4566 | { |
8387904d AM |
4567 | if (h != NULL) |
4568 | { | |
4569 | if (h->root.root.string[0] == '.' | |
4570 | && h->root.root.string[1] != 0 | |
4571 | && get_fdh ((struct ppc_link_hash_entry *) h, htab)) | |
4572 | ; | |
4573 | else | |
4574 | ((struct ppc_link_hash_entry *) h)->is_func = 1; | |
4575 | } | |
4576 | else | |
4577 | { | |
4578 | asection *s; | |
1e2f5b6e | 4579 | |
8387904d AM |
4580 | s = bfd_section_from_r_symndx (abfd, &htab->sym_sec, sec, |
4581 | r_symndx); | |
4582 | if (s == NULL) | |
4583 | return FALSE; | |
4584 | else if (s != sec) | |
3f764659 | 4585 | opd_sym_map[rel->r_offset / 8] = s; |
8387904d | 4586 | } |
1e2f5b6e | 4587 | } |
e86ce104 AM |
4588 | /* Fall through. */ |
4589 | ||
04c9666a | 4590 | case R_PPC64_REL30: |
5bd4f169 | 4591 | case R_PPC64_REL32: |
04c9666a | 4592 | case R_PPC64_REL64: |
65f38f15 AM |
4593 | case R_PPC64_ADDR14: |
4594 | case R_PPC64_ADDR14_BRNTAKEN: | |
4595 | case R_PPC64_ADDR14_BRTAKEN: | |
4596 | case R_PPC64_ADDR16: | |
4597 | case R_PPC64_ADDR16_DS: | |
4598 | case R_PPC64_ADDR16_HA: | |
4599 | case R_PPC64_ADDR16_HI: | |
4600 | case R_PPC64_ADDR16_HIGHER: | |
4601 | case R_PPC64_ADDR16_HIGHERA: | |
4602 | case R_PPC64_ADDR16_HIGHEST: | |
4603 | case R_PPC64_ADDR16_HIGHESTA: | |
4604 | case R_PPC64_ADDR16_LO: | |
4605 | case R_PPC64_ADDR16_LO_DS: | |
4606 | case R_PPC64_ADDR24: | |
65f38f15 | 4607 | case R_PPC64_ADDR32: |
65f38f15 AM |
4608 | case R_PPC64_UADDR16: |
4609 | case R_PPC64_UADDR32: | |
4610 | case R_PPC64_UADDR64: | |
5bd4f169 | 4611 | case R_PPC64_TOC: |
81848ca0 AM |
4612 | if (h != NULL && !info->shared) |
4613 | /* We may need a copy reloc. */ | |
f5385ebf | 4614 | h->non_got_ref = 1; |
81848ca0 | 4615 | |
41bd81ab | 4616 | /* Don't propagate .opd relocs. */ |
1e2f5b6e | 4617 | if (NO_OPD_RELOCS && opd_sym_map != NULL) |
e86ce104 | 4618 | break; |
e86ce104 | 4619 | |
65f38f15 AM |
4620 | /* If we are creating a shared library, and this is a reloc |
4621 | against a global symbol, or a non PC relative reloc | |
4622 | against a local symbol, then we need to copy the reloc | |
4623 | into the shared library. However, if we are linking with | |
4624 | -Bsymbolic, we do not need to copy a reloc against a | |
4625 | global symbol which is defined in an object we are | |
4626 | including in the link (i.e., DEF_REGULAR is set). At | |
4627 | this point we have not seen all the input files, so it is | |
4628 | possible that DEF_REGULAR is not set now but will be set | |
4629 | later (it is never cleared). In case of a weak definition, | |
4630 | DEF_REGULAR may be cleared later by a strong definition in | |
4631 | a shared library. We account for that possibility below by | |
f4656909 | 4632 | storing information in the dyn_relocs field of the hash |
65f38f15 AM |
4633 | table entry. A similar situation occurs when creating |
4634 | shared libraries and symbol visibility changes render the | |
4635 | symbol local. | |
4636 | ||
4637 | If on the other hand, we are creating an executable, we | |
4638 | may need to keep relocations for symbols satisfied by a | |
4639 | dynamic library if we manage to avoid copy relocs for the | |
4640 | symbol. */ | |
411e1bfb | 4641 | dodyn: |
65f38f15 | 4642 | if ((info->shared |
411e1bfb | 4643 | && (MUST_BE_DYN_RELOC (r_type) |
65f38f15 AM |
4644 | || (h != NULL |
4645 | && (! info->symbolic | |
4646 | || h->root.type == bfd_link_hash_defweak | |
f5385ebf | 4647 | || !h->def_regular)))) |
f4656909 AM |
4648 | || (ELIMINATE_COPY_RELOCS |
4649 | && !info->shared | |
65f38f15 AM |
4650 | && h != NULL |
4651 | && (h->root.type == bfd_link_hash_defweak | |
f5385ebf | 4652 | || !h->def_regular))) |
5bd4f169 | 4653 | { |
ec338859 AM |
4654 | struct ppc_dyn_relocs *p; |
4655 | struct ppc_dyn_relocs **head; | |
4656 | ||
65f38f15 AM |
4657 | /* We must copy these reloc types into the output file. |
4658 | Create a reloc section in dynobj and make room for | |
4659 | this reloc. */ | |
5bd4f169 AM |
4660 | if (sreloc == NULL) |
4661 | { | |
4662 | const char *name; | |
65f38f15 | 4663 | bfd *dynobj; |
5bd4f169 AM |
4664 | |
4665 | name = (bfd_elf_string_from_elf_section | |
4666 | (abfd, | |
4667 | elf_elfheader (abfd)->e_shstrndx, | |
4668 | elf_section_data (sec)->rel_hdr.sh_name)); | |
4669 | if (name == NULL) | |
b34976b6 | 4670 | return FALSE; |
5bd4f169 | 4671 | |
65f38f15 AM |
4672 | if (strncmp (name, ".rela", 5) != 0 |
4673 | || strcmp (bfd_get_section_name (abfd, sec), | |
4674 | name + 5) != 0) | |
4675 | { | |
4676 | (*_bfd_error_handler) | |
d003868e AM |
4677 | (_("%B: bad relocation section name `%s\'"), |
4678 | abfd, name); | |
5d1634d7 | 4679 | bfd_set_error (bfd_error_bad_value); |
65f38f15 AM |
4680 | } |
4681 | ||
65f38f15 | 4682 | dynobj = htab->elf.dynobj; |
5bd4f169 AM |
4683 | sreloc = bfd_get_section_by_name (dynobj, name); |
4684 | if (sreloc == NULL) | |
4685 | { | |
4686 | flagword flags; | |
4687 | ||
5bd4f169 | 4688 | flags = (SEC_HAS_CONTENTS | SEC_READONLY |
77623a34 AM |
4689 | | SEC_IN_MEMORY | SEC_LINKER_CREATED |
4690 | | SEC_ALLOC | SEC_LOAD); | |
3496cb2a L |
4691 | sreloc = bfd_make_section_with_flags (dynobj, |
4692 | name, | |
4693 | flags); | |
5bd4f169 | 4694 | if (sreloc == NULL |
65f38f15 | 4695 | || ! bfd_set_section_alignment (dynobj, sreloc, 3)) |
b34976b6 | 4696 | return FALSE; |
5bd4f169 | 4697 | } |
65f38f15 | 4698 | elf_section_data (sec)->sreloc = sreloc; |
5bd4f169 AM |
4699 | } |
4700 | ||
65f38f15 AM |
4701 | /* If this is a global symbol, we count the number of |
4702 | relocations we need for this symbol. */ | |
4703 | if (h != NULL) | |
4704 | { | |
ec338859 | 4705 | head = &((struct ppc_link_hash_entry *) h)->dyn_relocs; |
65f38f15 AM |
4706 | } |
4707 | else | |
4708 | { | |
ec338859 AM |
4709 | /* Track dynamic relocs needed for local syms too. |
4710 | We really need local syms available to do this | |
4711 | easily. Oh well. */ | |
4712 | ||
4713 | asection *s; | |
4714 | s = bfd_section_from_r_symndx (abfd, &htab->sym_sec, | |
4715 | sec, r_symndx); | |
4716 | if (s == NULL) | |
b34976b6 | 4717 | return FALSE; |
ec338859 AM |
4718 | |
4719 | head = ((struct ppc_dyn_relocs **) | |
4720 | &elf_section_data (s)->local_dynrel); | |
65f38f15 | 4721 | } |
ec338859 AM |
4722 | |
4723 | p = *head; | |
4724 | if (p == NULL || p->sec != sec) | |
4725 | { | |
4ce794b7 | 4726 | p = bfd_alloc (htab->elf.dynobj, sizeof *p); |
ec338859 | 4727 | if (p == NULL) |
b34976b6 | 4728 | return FALSE; |
ec338859 AM |
4729 | p->next = *head; |
4730 | *head = p; | |
4731 | p->sec = sec; | |
4732 | p->count = 0; | |
4733 | p->pc_count = 0; | |
4734 | } | |
4735 | ||
4736 | p->count += 1; | |
411e1bfb | 4737 | if (!MUST_BE_DYN_RELOC (r_type)) |
ec338859 | 4738 | p->pc_count += 1; |
65f38f15 | 4739 | } |
5bd4f169 | 4740 | break; |
65f38f15 AM |
4741 | |
4742 | default: | |
96e0dda4 | 4743 | break; |
5bd4f169 AM |
4744 | } |
4745 | } | |
4746 | ||
b34976b6 | 4747 | return TRUE; |
5bd4f169 AM |
4748 | } |
4749 | ||
8387904d AM |
4750 | /* OFFSET in OPD_SEC specifies a function descriptor. Return the address |
4751 | of the code entry point, and its section. */ | |
4752 | ||
4753 | static bfd_vma | |
4754 | opd_entry_value (asection *opd_sec, | |
4755 | bfd_vma offset, | |
4756 | asection **code_sec, | |
4757 | bfd_vma *code_off) | |
4758 | { | |
4759 | bfd *opd_bfd = opd_sec->owner; | |
8860955f | 4760 | Elf_Internal_Rela *relocs; |
8387904d | 4761 | Elf_Internal_Rela *lo, *hi, *look; |
645ea6a9 | 4762 | bfd_vma val; |
8387904d | 4763 | |
4b85d634 AM |
4764 | /* No relocs implies we are linking a --just-symbols object. */ |
4765 | if (opd_sec->reloc_count == 0) | |
4766 | { | |
4767 | bfd_vma val; | |
4768 | ||
4769 | if (!bfd_get_section_contents (opd_bfd, opd_sec, &val, offset, 8)) | |
4770 | return (bfd_vma) -1; | |
3b36f7e6 | 4771 | |
4b85d634 AM |
4772 | if (code_sec != NULL) |
4773 | { | |
4774 | asection *sec, *likely = NULL; | |
4775 | for (sec = opd_bfd->sections; sec != NULL; sec = sec->next) | |
4776 | if (sec->vma <= val | |
4777 | && (sec->flags & SEC_LOAD) != 0 | |
4778 | && (sec->flags & SEC_ALLOC) != 0) | |
4779 | likely = sec; | |
4780 | if (likely != NULL) | |
4781 | { | |
4782 | *code_sec = likely; | |
4783 | if (code_off != NULL) | |
4784 | *code_off = val - likely->vma; | |
4785 | } | |
4786 | } | |
4787 | return val; | |
4788 | } | |
4789 | ||
8860955f AM |
4790 | relocs = ppc64_elf_tdata (opd_bfd)->opd_relocs; |
4791 | if (relocs == NULL) | |
4792 | relocs = _bfd_elf_link_read_relocs (opd_bfd, opd_sec, NULL, NULL, TRUE); | |
645ea6a9 | 4793 | |
8387904d | 4794 | /* Go find the opd reloc at the sym address. */ |
8860955f | 4795 | lo = relocs; |
8387904d AM |
4796 | BFD_ASSERT (lo != NULL); |
4797 | hi = lo + opd_sec->reloc_count - 1; /* ignore last reloc */ | |
645ea6a9 | 4798 | val = (bfd_vma) -1; |
8387904d AM |
4799 | while (lo < hi) |
4800 | { | |
4801 | look = lo + (hi - lo) / 2; | |
4802 | if (look->r_offset < offset) | |
4803 | lo = look + 1; | |
4804 | else if (look->r_offset > offset) | |
4805 | hi = look; | |
4806 | else | |
4807 | { | |
4808 | Elf_Internal_Shdr *symtab_hdr = &elf_tdata (opd_bfd)->symtab_hdr; | |
4809 | if (ELF64_R_TYPE (look->r_info) == R_PPC64_ADDR64 | |
4810 | && ELF64_R_TYPE ((look + 1)->r_info) == R_PPC64_TOC) | |
4811 | { | |
4812 | unsigned long symndx = ELF64_R_SYM (look->r_info); | |
8387904d AM |
4813 | asection *sec; |
4814 | ||
4815 | if (symndx < symtab_hdr->sh_info) | |
4816 | { | |
4817 | Elf_Internal_Sym *sym; | |
4818 | ||
4819 | sym = (Elf_Internal_Sym *) symtab_hdr->contents; | |
4820 | if (sym == NULL) | |
4821 | { | |
4822 | sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr, | |
4823 | symtab_hdr->sh_info, | |
4824 | 0, NULL, NULL, NULL); | |
4825 | if (sym == NULL) | |
645ea6a9 | 4826 | break; |
8387904d AM |
4827 | symtab_hdr->contents = (bfd_byte *) sym; |
4828 | } | |
4829 | ||
4830 | sym += symndx; | |
4831 | val = sym->st_value; | |
4832 | sec = NULL; | |
4833 | if ((sym->st_shndx != SHN_UNDEF | |
4834 | && sym->st_shndx < SHN_LORESERVE) | |
4835 | || sym->st_shndx > SHN_HIRESERVE) | |
4836 | sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx); | |
4837 | BFD_ASSERT ((sec->flags & SEC_MERGE) == 0); | |
4838 | } | |
4839 | else | |
4840 | { | |
4841 | struct elf_link_hash_entry **sym_hashes; | |
4842 | struct elf_link_hash_entry *rh; | |
4843 | ||
4844 | sym_hashes = elf_sym_hashes (opd_bfd); | |
4845 | rh = sym_hashes[symndx - symtab_hdr->sh_info]; | |
4846 | while (rh->root.type == bfd_link_hash_indirect | |
4847 | || rh->root.type == bfd_link_hash_warning) | |
4848 | rh = ((struct elf_link_hash_entry *) rh->root.u.i.link); | |
4849 | BFD_ASSERT (rh->root.type == bfd_link_hash_defined | |
4850 | || rh->root.type == bfd_link_hash_defweak); | |
4851 | val = rh->root.u.def.value; | |
4852 | sec = rh->root.u.def.section; | |
4853 | } | |
4854 | val += look->r_addend; | |
4855 | if (code_off != NULL) | |
4856 | *code_off = val; | |
4857 | if (code_sec != NULL) | |
4858 | *code_sec = sec; | |
4859 | if (sec != NULL && sec->output_section != NULL) | |
4860 | val += sec->output_section->vma + sec->output_offset; | |
8387904d AM |
4861 | } |
4862 | break; | |
4863 | } | |
4864 | } | |
645ea6a9 | 4865 | |
645ea6a9 | 4866 | return val; |
8387904d AM |
4867 | } |
4868 | ||
5bd4f169 AM |
4869 | /* Return the section that should be marked against GC for a given |
4870 | relocation. */ | |
4871 | ||
4872 | static asection * | |
4ce794b7 | 4873 | ppc64_elf_gc_mark_hook (asection *sec, |
ccfa59ea | 4874 | struct bfd_link_info *info, |
4ce794b7 AM |
4875 | Elf_Internal_Rela *rel, |
4876 | struct elf_link_hash_entry *h, | |
4877 | Elf_Internal_Sym *sym) | |
5bd4f169 | 4878 | { |
ccfa59ea AM |
4879 | asection *rsec; |
4880 | ||
4881 | /* First mark all our entry sym sections. */ | |
4882 | if (info->gc_sym_list != NULL) | |
4883 | { | |
4884 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
4885 | struct bfd_sym_chain *sym = info->gc_sym_list; | |
4886 | ||
4887 | info->gc_sym_list = NULL; | |
4888 | do | |
4889 | { | |
4890 | struct ppc_link_hash_entry *eh; | |
4891 | ||
4892 | eh = (struct ppc_link_hash_entry *) | |
4893 | elf_link_hash_lookup (&htab->elf, sym->name, FALSE, FALSE, FALSE); | |
4894 | if (eh == NULL) | |
4895 | continue; | |
4896 | if (eh->elf.root.type != bfd_link_hash_defined | |
4897 | && eh->elf.root.type != bfd_link_hash_defweak) | |
4898 | continue; | |
4899 | ||
c4f68ce3 AM |
4900 | if (eh->is_func_descriptor |
4901 | && (eh->oh->elf.root.type == bfd_link_hash_defined | |
4902 | || eh->oh->elf.root.type == bfd_link_hash_defweak)) | |
ccfa59ea | 4903 | rsec = eh->oh->elf.root.u.def.section; |
8387904d AM |
4904 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL |
4905 | && opd_entry_value (eh->elf.root.u.def.section, | |
4906 | eh->elf.root.u.def.value, | |
4907 | &rsec, NULL) != (bfd_vma) -1) | |
4908 | ; | |
ccfa59ea AM |
4909 | else |
4910 | continue; | |
4911 | ||
4912 | if (!rsec->gc_mark) | |
4913 | _bfd_elf_gc_mark (info, rsec, ppc64_elf_gc_mark_hook); | |
4914 | ||
4915 | rsec = eh->elf.root.u.def.section; | |
4916 | if (!rsec->gc_mark) | |
4917 | _bfd_elf_gc_mark (info, rsec, ppc64_elf_gc_mark_hook); | |
4918 | ||
4919 | sym = sym->next; | |
4920 | } | |
4921 | while (sym != NULL); | |
4922 | } | |
4923 | ||
4924 | /* Syms return NULL if we're marking .opd, so we avoid marking all | |
4925 | function sections, as all functions are referenced in .opd. */ | |
4926 | rsec = NULL; | |
4927 | if (get_opd_info (sec) != NULL) | |
4928 | return rsec; | |
1e2f5b6e | 4929 | |
5bd4f169 AM |
4930 | if (h != NULL) |
4931 | { | |
04c9666a | 4932 | enum elf_ppc64_reloc_type r_type; |
ccfa59ea | 4933 | struct ppc_link_hash_entry *eh; |
a33d1f77 | 4934 | |
4ce794b7 | 4935 | r_type = ELF64_R_TYPE (rel->r_info); |
a33d1f77 | 4936 | switch (r_type) |
5bd4f169 AM |
4937 | { |
4938 | case R_PPC64_GNU_VTINHERIT: | |
4939 | case R_PPC64_GNU_VTENTRY: | |
4940 | break; | |
4941 | ||
4942 | default: | |
4943 | switch (h->root.type) | |
4944 | { | |
4945 | case bfd_link_hash_defined: | |
4946 | case bfd_link_hash_defweak: | |
ccfa59ea | 4947 | eh = (struct ppc_link_hash_entry *) h; |
c4f68ce3 AM |
4948 | if (eh->oh != NULL |
4949 | && eh->oh->is_func_descriptor | |
4950 | && (eh->oh->elf.root.type == bfd_link_hash_defined | |
4951 | || eh->oh->elf.root.type == bfd_link_hash_defweak)) | |
ccfa59ea | 4952 | eh = eh->oh; |
1e2f5b6e AM |
4953 | |
4954 | /* Function descriptor syms cause the associated | |
4955 | function code sym section to be marked. */ | |
c4f68ce3 AM |
4956 | if (eh->is_func_descriptor |
4957 | && (eh->oh->elf.root.type == bfd_link_hash_defined | |
4958 | || eh->oh->elf.root.type == bfd_link_hash_defweak)) | |
ccfa59ea AM |
4959 | { |
4960 | /* They also mark their opd section. */ | |
4961 | if (!eh->elf.root.u.def.section->gc_mark) | |
4962 | _bfd_elf_gc_mark (info, eh->elf.root.u.def.section, | |
4963 | ppc64_elf_gc_mark_hook); | |
4964 | ||
4965 | rsec = eh->oh->elf.root.u.def.section; | |
4966 | } | |
8387904d AM |
4967 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL |
4968 | && opd_entry_value (eh->elf.root.u.def.section, | |
4969 | eh->elf.root.u.def.value, | |
4970 | &rsec, NULL) != (bfd_vma) -1) | |
4971 | { | |
4972 | if (!eh->elf.root.u.def.section->gc_mark) | |
4973 | _bfd_elf_gc_mark (info, eh->elf.root.u.def.section, | |
4974 | ppc64_elf_gc_mark_hook); | |
4975 | } | |
ccfa59ea | 4976 | else |
1e2f5b6e AM |
4977 | rsec = h->root.u.def.section; |
4978 | break; | |
5bd4f169 AM |
4979 | |
4980 | case bfd_link_hash_common: | |
1e2f5b6e AM |
4981 | rsec = h->root.u.c.p->section; |
4982 | break; | |
5bd4f169 AM |
4983 | |
4984 | default: | |
4985 | break; | |
4986 | } | |
4987 | } | |
4988 | } | |
4989 | else | |
4990 | { | |
1e2f5b6e AM |
4991 | asection **opd_sym_section; |
4992 | ||
4993 | rsec = bfd_section_from_elf_index (sec->owner, sym->st_shndx); | |
ccfa59ea | 4994 | opd_sym_section = get_opd_info (rsec); |
1e2f5b6e | 4995 | if (opd_sym_section != NULL) |
ccfa59ea AM |
4996 | { |
4997 | if (!rsec->gc_mark) | |
4998 | _bfd_elf_gc_mark (info, rsec, ppc64_elf_gc_mark_hook); | |
4999 | ||
3f764659 | 5000 | rsec = opd_sym_section[sym->st_value / 8]; |
ccfa59ea | 5001 | } |
5bd4f169 AM |
5002 | } |
5003 | ||
1e2f5b6e | 5004 | return rsec; |
5bd4f169 AM |
5005 | } |
5006 | ||
65f38f15 AM |
5007 | /* Update the .got, .plt. and dynamic reloc reference counts for the |
5008 | section being removed. */ | |
5bd4f169 | 5009 | |
b34976b6 | 5010 | static bfd_boolean |
4ce794b7 AM |
5011 | ppc64_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info, |
5012 | asection *sec, const Elf_Internal_Rela *relocs) | |
5bd4f169 | 5013 | { |
411e1bfb | 5014 | struct ppc_link_hash_table *htab; |
5bd4f169 AM |
5015 | Elf_Internal_Shdr *symtab_hdr; |
5016 | struct elf_link_hash_entry **sym_hashes; | |
411e1bfb | 5017 | struct got_entry **local_got_ents; |
5bd4f169 | 5018 | const Elf_Internal_Rela *rel, *relend; |
5bd4f169 | 5019 | |
680a3378 AM |
5020 | if ((sec->flags & SEC_ALLOC) == 0) |
5021 | return TRUE; | |
5022 | ||
ec338859 AM |
5023 | elf_section_data (sec)->local_dynrel = NULL; |
5024 | ||
411e1bfb | 5025 | htab = ppc_hash_table (info); |
5bd4f169 AM |
5026 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
5027 | sym_hashes = elf_sym_hashes (abfd); | |
411e1bfb | 5028 | local_got_ents = elf_local_got_ents (abfd); |
5bd4f169 AM |
5029 | |
5030 | relend = relocs + sec->reloc_count; | |
5031 | for (rel = relocs; rel < relend; rel++) | |
a33d1f77 AM |
5032 | { |
5033 | unsigned long r_symndx; | |
04c9666a | 5034 | enum elf_ppc64_reloc_type r_type; |
58ac9f71 | 5035 | struct elf_link_hash_entry *h = NULL; |
411e1bfb | 5036 | char tls_type = 0; |
5bd4f169 | 5037 | |
a33d1f77 | 5038 | r_symndx = ELF64_R_SYM (rel->r_info); |
4ce794b7 | 5039 | r_type = ELF64_R_TYPE (rel->r_info); |
58ac9f71 AM |
5040 | if (r_symndx >= symtab_hdr->sh_info) |
5041 | { | |
5042 | struct ppc_link_hash_entry *eh; | |
5043 | struct ppc_dyn_relocs **pp; | |
5044 | struct ppc_dyn_relocs *p; | |
5045 | ||
5046 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
3eb128b2 AM |
5047 | while (h->root.type == bfd_link_hash_indirect |
5048 | || h->root.type == bfd_link_hash_warning) | |
5049 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
58ac9f71 AM |
5050 | eh = (struct ppc_link_hash_entry *) h; |
5051 | ||
5052 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next) | |
5053 | if (p->sec == sec) | |
5054 | { | |
5055 | /* Everything must go for SEC. */ | |
5056 | *pp = p->next; | |
5057 | break; | |
5058 | } | |
5059 | } | |
5060 | ||
a33d1f77 AM |
5061 | switch (r_type) |
5062 | { | |
411e1bfb AM |
5063 | case R_PPC64_GOT_TLSLD16: |
5064 | case R_PPC64_GOT_TLSLD16_LO: | |
5065 | case R_PPC64_GOT_TLSLD16_HI: | |
5066 | case R_PPC64_GOT_TLSLD16_HA: | |
e717da7e | 5067 | ppc64_tlsld_got (abfd)->refcount -= 1; |
951fd09b | 5068 | tls_type = TLS_TLS | TLS_LD; |
411e1bfb AM |
5069 | goto dogot; |
5070 | ||
5071 | case R_PPC64_GOT_TLSGD16: | |
5072 | case R_PPC64_GOT_TLSGD16_LO: | |
5073 | case R_PPC64_GOT_TLSGD16_HI: | |
5074 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b | 5075 | tls_type = TLS_TLS | TLS_GD; |
411e1bfb AM |
5076 | goto dogot; |
5077 | ||
5078 | case R_PPC64_GOT_TPREL16_DS: | |
5079 | case R_PPC64_GOT_TPREL16_LO_DS: | |
5080 | case R_PPC64_GOT_TPREL16_HI: | |
5081 | case R_PPC64_GOT_TPREL16_HA: | |
5082 | tls_type = TLS_TLS | TLS_TPREL; | |
5083 | goto dogot; | |
5084 | ||
5085 | case R_PPC64_GOT_DTPREL16_DS: | |
5086 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
5087 | case R_PPC64_GOT_DTPREL16_HI: | |
5088 | case R_PPC64_GOT_DTPREL16_HA: | |
5089 | tls_type = TLS_TLS | TLS_DTPREL; | |
5090 | goto dogot; | |
5091 | ||
a33d1f77 AM |
5092 | case R_PPC64_GOT16: |
5093 | case R_PPC64_GOT16_DS: | |
5094 | case R_PPC64_GOT16_HA: | |
5095 | case R_PPC64_GOT16_HI: | |
5096 | case R_PPC64_GOT16_LO: | |
5097 | case R_PPC64_GOT16_LO_DS: | |
411e1bfb AM |
5098 | dogot: |
5099 | { | |
5100 | struct got_entry *ent; | |
5101 | ||
58ac9f71 AM |
5102 | if (h != NULL) |
5103 | ent = h->got.glist; | |
411e1bfb AM |
5104 | else |
5105 | ent = local_got_ents[r_symndx]; | |
5106 | ||
5107 | for (; ent != NULL; ent = ent->next) | |
5108 | if (ent->addend == rel->r_addend | |
e717da7e | 5109 | && ent->owner == abfd |
411e1bfb AM |
5110 | && ent->tls_type == tls_type) |
5111 | break; | |
5112 | if (ent == NULL) | |
5113 | abort (); | |
5114 | if (ent->got.refcount > 0) | |
5115 | ent->got.refcount -= 1; | |
5116 | } | |
a33d1f77 | 5117 | break; |
65f38f15 | 5118 | |
a33d1f77 AM |
5119 | case R_PPC64_PLT16_HA: |
5120 | case R_PPC64_PLT16_HI: | |
5121 | case R_PPC64_PLT16_LO: | |
5122 | case R_PPC64_PLT32: | |
5123 | case R_PPC64_PLT64: | |
721956f4 AM |
5124 | case R_PPC64_REL14: |
5125 | case R_PPC64_REL14_BRNTAKEN: | |
5126 | case R_PPC64_REL14_BRTAKEN: | |
5d1634d7 | 5127 | case R_PPC64_REL24: |
58ac9f71 | 5128 | if (h != NULL) |
5d1634d7 | 5129 | { |
411e1bfb AM |
5130 | struct plt_entry *ent; |
5131 | ||
411e1bfb AM |
5132 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) |
5133 | if (ent->addend == rel->r_addend) | |
5134 | break; | |
5135 | if (ent == NULL) | |
5136 | abort (); | |
5137 | if (ent->plt.refcount > 0) | |
5138 | ent->plt.refcount -= 1; | |
5d1634d7 | 5139 | } |
e86ce104 | 5140 | break; |
5d1634d7 | 5141 | |
a33d1f77 AM |
5142 | default: |
5143 | break; | |
5144 | } | |
5145 | } | |
b34976b6 | 5146 | return TRUE; |
5bd4f169 AM |
5147 | } |
5148 | ||
deb0e272 AM |
5149 | /* The maximum size of .sfpr. */ |
5150 | #define SFPR_MAX (218*4) | |
5151 | ||
5152 | struct sfpr_def_parms | |
5153 | { | |
699733f6 AM |
5154 | const char name[12]; |
5155 | unsigned char lo, hi; | |
deb0e272 AM |
5156 | bfd_byte * (*write_ent) (bfd *, bfd_byte *, int); |
5157 | bfd_byte * (*write_tail) (bfd *, bfd_byte *, int); | |
5158 | }; | |
5159 | ||
5160 | /* Auto-generate _save*, _rest* functions in .sfpr. */ | |
5161 | ||
5162 | static unsigned int | |
5163 | sfpr_define (struct bfd_link_info *info, const struct sfpr_def_parms *parm) | |
5164 | { | |
5165 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
5166 | unsigned int i; | |
5167 | size_t len = strlen (parm->name); | |
5168 | bfd_boolean writing = FALSE; | |
699733f6 | 5169 | char sym[16]; |
deb0e272 AM |
5170 | |
5171 | memcpy (sym, parm->name, len); | |
5172 | sym[len + 2] = 0; | |
5173 | ||
5174 | for (i = parm->lo; i <= parm->hi; i++) | |
5175 | { | |
5176 | struct elf_link_hash_entry *h; | |
5177 | ||
5178 | sym[len + 0] = i / 10 + '0'; | |
5179 | sym[len + 1] = i % 10 + '0'; | |
5180 | h = elf_link_hash_lookup (&htab->elf, sym, FALSE, FALSE, TRUE); | |
5181 | if (h != NULL | |
f5385ebf | 5182 | && !h->def_regular) |
deb0e272 AM |
5183 | { |
5184 | h->root.type = bfd_link_hash_defined; | |
5185 | h->root.u.def.section = htab->sfpr; | |
5186 | h->root.u.def.value = htab->sfpr->size; | |
5187 | h->type = STT_FUNC; | |
f5385ebf | 5188 | h->def_regular = 1; |
deb0e272 AM |
5189 | _bfd_elf_link_hash_hide_symbol (info, h, TRUE); |
5190 | writing = TRUE; | |
5191 | if (htab->sfpr->contents == NULL) | |
5192 | { | |
5193 | htab->sfpr->contents = bfd_alloc (htab->elf.dynobj, SFPR_MAX); | |
5194 | if (htab->sfpr->contents == NULL) | |
5195 | return FALSE; | |
5196 | } | |
5197 | } | |
5198 | if (writing) | |
5199 | { | |
5200 | bfd_byte *p = htab->sfpr->contents + htab->sfpr->size; | |
5201 | if (i != parm->hi) | |
5202 | p = (*parm->write_ent) (htab->elf.dynobj, p, i); | |
5203 | else | |
5204 | p = (*parm->write_tail) (htab->elf.dynobj, p, i); | |
5205 | htab->sfpr->size = p - htab->sfpr->contents; | |
5206 | } | |
5207 | } | |
5208 | ||
5209 | return TRUE; | |
5210 | } | |
5211 | ||
5212 | static bfd_byte * | |
5213 | savegpr0 (bfd *abfd, bfd_byte *p, int r) | |
5214 | { | |
5215 | bfd_put_32 (abfd, STD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
5216 | return p + 4; | |
5217 | } | |
5218 | ||
5219 | static bfd_byte * | |
5220 | savegpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
5221 | { | |
5222 | p = savegpr0 (abfd, p, r); | |
5223 | bfd_put_32 (abfd, STD_R0_0R1 + 16, p); | |
5224 | p = p + 4; | |
5225 | bfd_put_32 (abfd, BLR, p); | |
5226 | return p + 4; | |
5227 | } | |
5228 | ||
5229 | static bfd_byte * | |
5230 | restgpr0 (bfd *abfd, bfd_byte *p, int r) | |
5231 | { | |
5232 | bfd_put_32 (abfd, LD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
5233 | return p + 4; | |
5234 | } | |
5235 | ||
5236 | static bfd_byte * | |
5237 | restgpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
5238 | { | |
5239 | bfd_put_32 (abfd, LD_R0_0R1 + 16, p); | |
5240 | p = p + 4; | |
5241 | p = restgpr0 (abfd, p, r); | |
5242 | bfd_put_32 (abfd, MTLR_R0, p); | |
5243 | p = p + 4; | |
5244 | if (r == 29) | |
5245 | { | |
5246 | p = restgpr0 (abfd, p, 30); | |
5247 | p = restgpr0 (abfd, p, 31); | |
5248 | } | |
5249 | bfd_put_32 (abfd, BLR, p); | |
5250 | return p + 4; | |
5251 | } | |
5252 | ||
5253 | static bfd_byte * | |
5254 | savegpr1 (bfd *abfd, bfd_byte *p, int r) | |
5255 | { | |
5256 | bfd_put_32 (abfd, STD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
5257 | return p + 4; | |
5258 | } | |
5259 | ||
5260 | static bfd_byte * | |
5261 | savegpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
5262 | { | |
5263 | p = savegpr1 (abfd, p, r); | |
5264 | bfd_put_32 (abfd, BLR, p); | |
5265 | return p + 4; | |
5266 | } | |
5267 | ||
5268 | static bfd_byte * | |
5269 | restgpr1 (bfd *abfd, bfd_byte *p, int r) | |
5270 | { | |
5271 | bfd_put_32 (abfd, LD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
5272 | return p + 4; | |
5273 | } | |
5274 | ||
5275 | static bfd_byte * | |
5276 | restgpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
5277 | { | |
5278 | p = restgpr1 (abfd, p, r); | |
5279 | bfd_put_32 (abfd, BLR, p); | |
5280 | return p + 4; | |
5281 | } | |
5282 | ||
5283 | static bfd_byte * | |
5284 | savefpr (bfd *abfd, bfd_byte *p, int r) | |
5285 | { | |
5286 | bfd_put_32 (abfd, STFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
5287 | return p + 4; | |
5288 | } | |
5289 | ||
5290 | static bfd_byte * | |
5291 | savefpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
5292 | { | |
5293 | p = savefpr (abfd, p, r); | |
5294 | bfd_put_32 (abfd, STD_R0_0R1 + 16, p); | |
5295 | p = p + 4; | |
5296 | bfd_put_32 (abfd, BLR, p); | |
5297 | return p + 4; | |
5298 | } | |
5299 | ||
5300 | static bfd_byte * | |
5301 | restfpr (bfd *abfd, bfd_byte *p, int r) | |
5302 | { | |
5303 | bfd_put_32 (abfd, LFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
5304 | return p + 4; | |
5305 | } | |
5306 | ||
5307 | static bfd_byte * | |
5308 | restfpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
5309 | { | |
5310 | bfd_put_32 (abfd, LD_R0_0R1 + 16, p); | |
5311 | p = p + 4; | |
5312 | p = restfpr (abfd, p, r); | |
5313 | bfd_put_32 (abfd, MTLR_R0, p); | |
5314 | p = p + 4; | |
5315 | if (r == 29) | |
5316 | { | |
5317 | p = restfpr (abfd, p, 30); | |
5318 | p = restfpr (abfd, p, 31); | |
5319 | } | |
5320 | bfd_put_32 (abfd, BLR, p); | |
5321 | return p + 4; | |
5322 | } | |
5323 | ||
5324 | static bfd_byte * | |
5325 | savefpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
5326 | { | |
5327 | p = savefpr (abfd, p, r); | |
5328 | bfd_put_32 (abfd, BLR, p); | |
5329 | return p + 4; | |
5330 | } | |
5331 | ||
5332 | static bfd_byte * | |
5333 | restfpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
5334 | { | |
5335 | p = restfpr (abfd, p, r); | |
5336 | bfd_put_32 (abfd, BLR, p); | |
5337 | return p + 4; | |
5338 | } | |
5339 | ||
5340 | static bfd_byte * | |
5341 | savevr (bfd *abfd, bfd_byte *p, int r) | |
5342 | { | |
5343 | bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p); | |
5344 | p = p + 4; | |
5345 | bfd_put_32 (abfd, STVX_VR0_R12_R0 + (r << 21), p); | |
5346 | return p + 4; | |
5347 | } | |
5348 | ||
5349 | static bfd_byte * | |
5350 | savevr_tail (bfd *abfd, bfd_byte *p, int r) | |
5351 | { | |
5352 | p = savevr (abfd, p, r); | |
5353 | bfd_put_32 (abfd, BLR, p); | |
5354 | return p + 4; | |
5355 | } | |
5356 | ||
5357 | static bfd_byte * | |
5358 | restvr (bfd *abfd, bfd_byte *p, int r) | |
5359 | { | |
5360 | bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p); | |
5361 | p = p + 4; | |
5362 | bfd_put_32 (abfd, LVX_VR0_R12_R0 + (r << 21), p); | |
5363 | return p + 4; | |
5364 | } | |
5365 | ||
5366 | static bfd_byte * | |
5367 | restvr_tail (bfd *abfd, bfd_byte *p, int r) | |
5368 | { | |
5369 | p = restvr (abfd, p, r); | |
5370 | bfd_put_32 (abfd, BLR, p); | |
5371 | return p + 4; | |
5372 | } | |
5373 | ||
e86ce104 AM |
5374 | /* Called via elf_link_hash_traverse to transfer dynamic linking |
5375 | information on function code symbol entries to their corresponding | |
5376 | function descriptor symbol entries. */ | |
deb0e272 | 5377 | |
b34976b6 | 5378 | static bfd_boolean |
4ce794b7 | 5379 | func_desc_adjust (struct elf_link_hash_entry *h, void *inf) |
5bd4f169 | 5380 | { |
e86ce104 | 5381 | struct bfd_link_info *info; |
65f38f15 | 5382 | struct ppc_link_hash_table *htab; |
411e1bfb | 5383 | struct plt_entry *ent; |
50bc7936 AM |
5384 | struct ppc_link_hash_entry *fh; |
5385 | struct ppc_link_hash_entry *fdh; | |
5386 | bfd_boolean force_local; | |
5bd4f169 | 5387 | |
50bc7936 AM |
5388 | fh = (struct ppc_link_hash_entry *) h; |
5389 | if (fh->elf.root.type == bfd_link_hash_indirect) | |
b34976b6 | 5390 | return TRUE; |
e86ce104 | 5391 | |
50bc7936 AM |
5392 | if (fh->elf.root.type == bfd_link_hash_warning) |
5393 | fh = (struct ppc_link_hash_entry *) fh->elf.root.u.i.link; | |
e92d460e | 5394 | |
4ce794b7 | 5395 | info = inf; |
65f38f15 | 5396 | htab = ppc_hash_table (info); |
5bd4f169 | 5397 | |
c09bdfe5 AM |
5398 | /* Resolve undefined references to dot-symbols as the value |
5399 | in the function descriptor, if we have one in a regular object. | |
5400 | This is to satisfy cases like ".quad .foo". Calls to functions | |
5401 | in dynamic objects are handled elsewhere. */ | |
5402 | if (fh->elf.root.type == bfd_link_hash_undefweak | |
5403 | && fh->was_undefined | |
5404 | && (fh->oh->elf.root.type == bfd_link_hash_defined | |
5405 | || fh->oh->elf.root.type == bfd_link_hash_defweak) | |
5406 | && get_opd_info (fh->oh->elf.root.u.def.section) != NULL | |
5407 | && opd_entry_value (fh->oh->elf.root.u.def.section, | |
5408 | fh->oh->elf.root.u.def.value, | |
5409 | &fh->elf.root.u.def.section, | |
5410 | &fh->elf.root.u.def.value) != (bfd_vma) -1) | |
5411 | { | |
5412 | fh->elf.root.type = fh->oh->elf.root.type; | |
f5385ebf | 5413 | fh->elf.forced_local = 1; |
c09bdfe5 AM |
5414 | } |
5415 | ||
e86ce104 AM |
5416 | /* If this is a function code symbol, transfer dynamic linking |
5417 | information to the function descriptor symbol. */ | |
50bc7936 | 5418 | if (!fh->is_func) |
b34976b6 | 5419 | return TRUE; |
e86ce104 | 5420 | |
50bc7936 | 5421 | for (ent = fh->elf.plt.plist; ent != NULL; ent = ent->next) |
411e1bfb AM |
5422 | if (ent->plt.refcount > 0) |
5423 | break; | |
50bc7936 AM |
5424 | if (ent == NULL |
5425 | || fh->elf.root.root.string[0] != '.' | |
5426 | || fh->elf.root.root.string[1] == '\0') | |
5427 | return TRUE; | |
5bd4f169 | 5428 | |
50bc7936 AM |
5429 | /* Find the corresponding function descriptor symbol. Create it |
5430 | as undefined if necessary. */ | |
5bd4f169 | 5431 | |
50bc7936 AM |
5432 | fdh = get_fdh (fh, htab); |
5433 | if (fdh != NULL) | |
5434 | while (fdh->elf.root.type == bfd_link_hash_indirect | |
5435 | || fdh->elf.root.type == bfd_link_hash_warning) | |
5436 | fdh = (struct ppc_link_hash_entry *) fdh->elf.root.u.i.link; | |
5bd4f169 | 5437 | |
50bc7936 AM |
5438 | if (fdh == NULL |
5439 | && info->shared | |
5440 | && (fh->elf.root.type == bfd_link_hash_undefined | |
5441 | || fh->elf.root.type == bfd_link_hash_undefweak)) | |
5442 | { | |
908b32fc | 5443 | fdh = make_fdh (info, fh); |
bb700d78 AM |
5444 | if (fdh == NULL) |
5445 | return FALSE; | |
50bc7936 | 5446 | } |
648cca2c | 5447 | |
908b32fc AM |
5448 | /* Fake function descriptors are made undefweak. If the function |
5449 | code symbol is strong undefined, make the fake sym the same. */ | |
5450 | ||
5451 | if (fdh != NULL | |
5452 | && fdh->fake | |
5453 | && fdh->elf.root.type == bfd_link_hash_undefweak | |
5454 | && fh->elf.root.type == bfd_link_hash_undefined) | |
5455 | { | |
5456 | fdh->elf.root.type = bfd_link_hash_undefined; | |
5457 | bfd_link_add_undef (&htab->elf.root, &fdh->elf.root); | |
5458 | } | |
5459 | ||
50bc7936 | 5460 | if (fdh != NULL |
f5385ebf | 5461 | && !fdh->elf.forced_local |
50bc7936 | 5462 | && (info->shared |
f5385ebf AM |
5463 | || fdh->elf.def_dynamic |
5464 | || fdh->elf.ref_dynamic | |
50bc7936 AM |
5465 | || (fdh->elf.root.type == bfd_link_hash_undefweak |
5466 | && ELF_ST_VISIBILITY (fdh->elf.other) == STV_DEFAULT))) | |
5467 | { | |
5468 | if (fdh->elf.dynindx == -1) | |
c152c796 | 5469 | if (! bfd_elf_link_record_dynamic_symbol (info, &fdh->elf)) |
50bc7936 | 5470 | return FALSE; |
f5385ebf AM |
5471 | fdh->elf.ref_regular |= fh->elf.ref_regular; |
5472 | fdh->elf.ref_dynamic |= fh->elf.ref_dynamic; | |
5473 | fdh->elf.ref_regular_nonweak |= fh->elf.ref_regular_nonweak; | |
5474 | fdh->elf.non_got_ref |= fh->elf.non_got_ref; | |
50bc7936 | 5475 | if (ELF_ST_VISIBILITY (fh->elf.other) == STV_DEFAULT) |
e86ce104 | 5476 | { |
40d16e0b | 5477 | move_plt_plist (fh, fdh); |
f5385ebf | 5478 | fdh->elf.needs_plt = 1; |
e86ce104 | 5479 | } |
50bc7936 | 5480 | fdh->is_func_descriptor = 1; |
34814b9f AM |
5481 | fdh->oh = fh; |
5482 | fh->oh = fdh; | |
e86ce104 AM |
5483 | } |
5484 | ||
50bc7936 AM |
5485 | /* Now that the info is on the function descriptor, clear the |
5486 | function code sym info. Any function code syms for which we | |
5487 | don't have a definition in a regular file, we force local. | |
5488 | This prevents a shared library from exporting syms that have | |
5489 | been imported from another library. Function code syms that | |
5490 | are really in the library we must leave global to prevent the | |
5491 | linker dragging in a definition from a static library. */ | |
93f3fa99 AM |
5492 | force_local = (!fh->elf.def_regular |
5493 | || fdh == NULL | |
5494 | || !fdh->elf.def_regular | |
5495 | || fdh->elf.forced_local); | |
50bc7936 AM |
5496 | _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local); |
5497 | ||
b34976b6 | 5498 | return TRUE; |
e86ce104 | 5499 | } |
40b8271b | 5500 | |
e86ce104 | 5501 | /* Called near the start of bfd_elf_size_dynamic_sections. We use |
82bd7b59 AM |
5502 | this hook to a) provide some gcc support functions, and b) transfer |
5503 | dynamic linking information gathered so far on function code symbol | |
5504 | entries, to their corresponding function descriptor symbol entries. */ | |
deb0e272 | 5505 | |
b34976b6 | 5506 | static bfd_boolean |
4ce794b7 AM |
5507 | ppc64_elf_func_desc_adjust (bfd *obfd ATTRIBUTE_UNUSED, |
5508 | struct bfd_link_info *info) | |
e86ce104 AM |
5509 | { |
5510 | struct ppc_link_hash_table *htab; | |
82bd7b59 | 5511 | unsigned int i; |
deb0e272 AM |
5512 | const struct sfpr_def_parms funcs[] = |
5513 | { | |
5514 | { "_savegpr0_", 14, 31, savegpr0, savegpr0_tail }, | |
5515 | { "_restgpr0_", 14, 29, restgpr0, restgpr0_tail }, | |
5516 | { "_restgpr0_", 30, 31, restgpr0, restgpr0_tail }, | |
5517 | { "_savegpr1_", 14, 31, savegpr1, savegpr1_tail }, | |
5518 | { "_restgpr1_", 14, 31, restgpr1, restgpr1_tail }, | |
5519 | { "_savefpr_", 14, 31, savefpr, savefpr0_tail }, | |
5520 | { "_restfpr_", 14, 29, restfpr, restfpr0_tail }, | |
5521 | { "_restfpr_", 30, 31, restfpr, restfpr0_tail }, | |
5522 | { "._savef", 14, 31, savefpr, savefpr1_tail }, | |
5523 | { "._restf", 14, 31, restfpr, restfpr1_tail }, | |
5524 | { "_savevr_", 20, 31, savevr, savevr_tail }, | |
5525 | { "_restvr_", 20, 31, restvr, restvr_tail } | |
5526 | }; | |
e86ce104 AM |
5527 | |
5528 | htab = ppc_hash_table (info); | |
82bd7b59 AM |
5529 | if (htab->sfpr == NULL) |
5530 | /* We don't have any relocs. */ | |
b34976b6 | 5531 | return TRUE; |
82bd7b59 | 5532 | |
deb0e272 AM |
5533 | /* Provide any missing _save* and _rest* functions. */ |
5534 | htab->sfpr->size = 0; | |
5535 | for (i = 0; i < sizeof (funcs) / sizeof (funcs[0]); i++) | |
5536 | if (!sfpr_define (info, &funcs[i])) | |
5537 | return FALSE; | |
82bd7b59 | 5538 | |
4ce794b7 | 5539 | elf_link_hash_traverse (&htab->elf, func_desc_adjust, info); |
805fc799 | 5540 | |
eea6121a | 5541 | if (htab->sfpr->size == 0) |
8423293d | 5542 | htab->sfpr->flags |= SEC_EXCLUDE; |
82bd7b59 | 5543 | |
b34976b6 | 5544 | return TRUE; |
e86ce104 AM |
5545 | } |
5546 | ||
5547 | /* Adjust a symbol defined by a dynamic object and referenced by a | |
5548 | regular object. The current definition is in some section of the | |
5549 | dynamic object, but we're not including those sections. We have to | |
5550 | change the definition to something the rest of the link can | |
5551 | understand. */ | |
5552 | ||
b34976b6 | 5553 | static bfd_boolean |
4ce794b7 AM |
5554 | ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info *info, |
5555 | struct elf_link_hash_entry *h) | |
e86ce104 AM |
5556 | { |
5557 | struct ppc_link_hash_table *htab; | |
e86ce104 AM |
5558 | asection *s; |
5559 | unsigned int power_of_two; | |
5560 | ||
5561 | htab = ppc_hash_table (info); | |
5562 | ||
5563 | /* Deal with function syms. */ | |
5564 | if (h->type == STT_FUNC | |
f5385ebf | 5565 | || h->needs_plt) |
e86ce104 AM |
5566 | { |
5567 | /* Clear procedure linkage table information for any symbol that | |
5568 | won't need a .plt entry. */ | |
411e1bfb AM |
5569 | struct plt_entry *ent; |
5570 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) | |
5571 | if (ent->plt.refcount > 0) | |
5572 | break; | |
8387904d | 5573 | if (ent == NULL |
9c7a29a3 AM |
5574 | || SYMBOL_CALLS_LOCAL (info, h) |
5575 | || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
5576 | && h->root.type == bfd_link_hash_undefweak)) | |
40b8271b | 5577 | { |
411e1bfb | 5578 | h->plt.plist = NULL; |
f5385ebf | 5579 | h->needs_plt = 0; |
40b8271b | 5580 | } |
5bd4f169 | 5581 | } |
bbd7ec4a | 5582 | else |
411e1bfb | 5583 | h->plt.plist = NULL; |
5bd4f169 AM |
5584 | |
5585 | /* If this is a weak symbol, and there is a real definition, the | |
5586 | processor independent code will have arranged for us to see the | |
5587 | real definition first, and we can just use the same value. */ | |
f6e332e6 | 5588 | if (h->u.weakdef != NULL) |
5bd4f169 | 5589 | { |
f6e332e6 AM |
5590 | BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined |
5591 | || h->u.weakdef->root.type == bfd_link_hash_defweak); | |
5592 | h->root.u.def.section = h->u.weakdef->root.u.def.section; | |
5593 | h->root.u.def.value = h->u.weakdef->root.u.def.value; | |
a23b6845 | 5594 | if (ELIMINATE_COPY_RELOCS) |
f6e332e6 | 5595 | h->non_got_ref = h->u.weakdef->non_got_ref; |
b34976b6 | 5596 | return TRUE; |
5bd4f169 AM |
5597 | } |
5598 | ||
5bd4f169 AM |
5599 | /* If we are creating a shared library, we must presume that the |
5600 | only references to the symbol are via the global offset table. | |
5601 | For such cases we need not do anything here; the relocations will | |
5602 | be handled correctly by relocate_section. */ | |
5603 | if (info->shared) | |
b34976b6 | 5604 | return TRUE; |
5bd4f169 | 5605 | |
65f38f15 AM |
5606 | /* If there are no references to this symbol that do not use the |
5607 | GOT, we don't need to generate a copy reloc. */ | |
f5385ebf | 5608 | if (!h->non_got_ref) |
b34976b6 | 5609 | return TRUE; |
65f38f15 | 5610 | |
f4656909 | 5611 | if (ELIMINATE_COPY_RELOCS) |
65f38f15 | 5612 | { |
f4656909 AM |
5613 | struct ppc_link_hash_entry * eh; |
5614 | struct ppc_dyn_relocs *p; | |
65f38f15 | 5615 | |
f4656909 AM |
5616 | eh = (struct ppc_link_hash_entry *) h; |
5617 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
5618 | { | |
5619 | s = p->sec->output_section; | |
5620 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
5621 | break; | |
5622 | } | |
5623 | ||
5624 | /* If we didn't find any dynamic relocs in read-only sections, then | |
5625 | we'll be keeping the dynamic relocs and avoiding the copy reloc. */ | |
5626 | if (p == NULL) | |
5627 | { | |
f5385ebf | 5628 | h->non_got_ref = 0; |
f4656909 AM |
5629 | return TRUE; |
5630 | } | |
65f38f15 AM |
5631 | } |
5632 | ||
5d35169e | 5633 | if (h->plt.plist != NULL) |
97b639ba AM |
5634 | { |
5635 | /* We should never get here, but unfortunately there are versions | |
5636 | of gcc out there that improperly (for this ABI) put initialized | |
5637 | function pointers, vtable refs and suchlike in read-only | |
5638 | sections. Allow them to proceed, but warn that this might | |
5639 | break at runtime. */ | |
5640 | (*_bfd_error_handler) | |
5641 | (_("copy reloc against `%s' requires lazy plt linking; " | |
5642 | "avoid setting LD_BIND_NOW=1 or upgrade gcc"), | |
5643 | h->root.root.string); | |
5644 | } | |
5d35169e AM |
5645 | |
5646 | /* This is a reference to a symbol defined by a dynamic object which | |
5647 | is not a function. */ | |
5648 | ||
5bd4f169 AM |
5649 | /* We must allocate the symbol in our .dynbss section, which will |
5650 | become part of the .bss section of the executable. There will be | |
5651 | an entry for this symbol in the .dynsym section. The dynamic | |
5652 | object will contain position independent code, so all references | |
5653 | from the dynamic object to this symbol will go through the global | |
5654 | offset table. The dynamic linker will use the .dynsym entry to | |
5655 | determine the address it must put in the global offset table, so | |
5656 | both the dynamic object and the regular object will refer to the | |
5657 | same memory location for the variable. */ | |
5bd4f169 | 5658 | |
04c9666a AM |
5659 | /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker |
5660 | to copy the initial value out of the dynamic object and into the | |
5bd4f169 AM |
5661 | runtime process image. We need to remember the offset into the |
5662 | .rela.bss section we are going to use. */ | |
5663 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) | |
5664 | { | |
eea6121a | 5665 | htab->relbss->size += sizeof (Elf64_External_Rela); |
f5385ebf | 5666 | h->needs_copy = 1; |
5bd4f169 AM |
5667 | } |
5668 | ||
5669 | /* We need to figure out the alignment required for this symbol. I | |
5670 | have no idea how ELF linkers handle this. */ | |
5671 | power_of_two = bfd_log2 (h->size); | |
5672 | if (power_of_two > 4) | |
5673 | power_of_two = 4; | |
5674 | ||
5675 | /* Apply the required alignment. */ | |
4ce794b7 | 5676 | s = htab->dynbss; |
eea6121a | 5677 | s->size = BFD_ALIGN (s->size, (bfd_size_type) (1 << power_of_two)); |
65f38f15 | 5678 | if (power_of_two > bfd_get_section_alignment (htab->elf.dynobj, s)) |
5bd4f169 | 5679 | { |
65f38f15 | 5680 | if (! bfd_set_section_alignment (htab->elf.dynobj, s, power_of_two)) |
b34976b6 | 5681 | return FALSE; |
5bd4f169 AM |
5682 | } |
5683 | ||
5684 | /* Define the symbol as being at this point in the section. */ | |
5685 | h->root.u.def.section = s; | |
eea6121a | 5686 | h->root.u.def.value = s->size; |
5bd4f169 AM |
5687 | |
5688 | /* Increment the section size to make room for the symbol. */ | |
eea6121a | 5689 | s->size += h->size; |
5bd4f169 | 5690 | |
b34976b6 | 5691 | return TRUE; |
5bd4f169 AM |
5692 | } |
5693 | ||
e86ce104 AM |
5694 | /* If given a function descriptor symbol, hide both the function code |
5695 | sym and the descriptor. */ | |
5696 | static void | |
4ce794b7 AM |
5697 | ppc64_elf_hide_symbol (struct bfd_link_info *info, |
5698 | struct elf_link_hash_entry *h, | |
5699 | bfd_boolean force_local) | |
e86ce104 | 5700 | { |
34814b9f | 5701 | struct ppc_link_hash_entry *eh; |
e86ce104 AM |
5702 | _bfd_elf_link_hash_hide_symbol (info, h, force_local); |
5703 | ||
34814b9f AM |
5704 | eh = (struct ppc_link_hash_entry *) h; |
5705 | if (eh->is_func_descriptor) | |
e86ce104 | 5706 | { |
34814b9f | 5707 | struct ppc_link_hash_entry *fh = eh->oh; |
e86ce104 | 5708 | |
721956f4 | 5709 | if (fh == NULL) |
d1329ca3 AM |
5710 | { |
5711 | const char *p, *q; | |
5712 | struct ppc_link_hash_table *htab; | |
5713 | char save; | |
5714 | ||
5715 | /* We aren't supposed to use alloca in BFD because on | |
5716 | systems which do not have alloca the version in libiberty | |
5717 | calls xmalloc, which might cause the program to crash | |
5718 | when it runs out of memory. This function doesn't have a | |
5719 | return status, so there's no way to gracefully return an | |
5720 | error. So cheat. We know that string[-1] can be safely | |
34814b9f AM |
5721 | accessed; It's either a string in an ELF string table, |
5722 | or allocated in an objalloc structure. */ | |
d1329ca3 | 5723 | |
34814b9f | 5724 | p = eh->elf.root.root.string - 1; |
d1329ca3 AM |
5725 | save = *p; |
5726 | *(char *) p = '.'; | |
5727 | htab = ppc_hash_table (info); | |
34814b9f AM |
5728 | fh = (struct ppc_link_hash_entry *) |
5729 | elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE); | |
d1329ca3 AM |
5730 | *(char *) p = save; |
5731 | ||
5732 | /* Unfortunately, if it so happens that the string we were | |
5733 | looking for was allocated immediately before this string, | |
5734 | then we overwrote the string terminator. That's the only | |
5735 | reason the lookup should fail. */ | |
5736 | if (fh == NULL) | |
5737 | { | |
34814b9f AM |
5738 | q = eh->elf.root.root.string + strlen (eh->elf.root.root.string); |
5739 | while (q >= eh->elf.root.root.string && *q == *p) | |
d1329ca3 | 5740 | --q, --p; |
34814b9f AM |
5741 | if (q < eh->elf.root.root.string && *p == '.') |
5742 | fh = (struct ppc_link_hash_entry *) | |
5743 | elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE); | |
d1329ca3 AM |
5744 | } |
5745 | if (fh != NULL) | |
5746 | { | |
34814b9f AM |
5747 | eh->oh = fh; |
5748 | fh->oh = eh; | |
d1329ca3 AM |
5749 | } |
5750 | } | |
e86ce104 | 5751 | if (fh != NULL) |
34814b9f | 5752 | _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local); |
e86ce104 AM |
5753 | } |
5754 | } | |
5755 | ||
411e1bfb | 5756 | static bfd_boolean |
8843416a AM |
5757 | get_sym_h (struct elf_link_hash_entry **hp, |
5758 | Elf_Internal_Sym **symp, | |
5759 | asection **symsecp, | |
5760 | char **tls_maskp, | |
5761 | Elf_Internal_Sym **locsymsp, | |
5762 | unsigned long r_symndx, | |
5763 | bfd *ibfd) | |
411e1bfb AM |
5764 | { |
5765 | Elf_Internal_Shdr *symtab_hdr = &elf_tdata (ibfd)->symtab_hdr; | |
5766 | ||
5767 | if (r_symndx >= symtab_hdr->sh_info) | |
5768 | { | |
5769 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd); | |
5770 | struct elf_link_hash_entry *h; | |
5771 | ||
5772 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
5773 | while (h->root.type == bfd_link_hash_indirect | |
5774 | || h->root.type == bfd_link_hash_warning) | |
5775 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
5776 | ||
5777 | if (hp != NULL) | |
5778 | *hp = h; | |
5779 | ||
5780 | if (symp != NULL) | |
5781 | *symp = NULL; | |
5782 | ||
5783 | if (symsecp != NULL) | |
5784 | { | |
5785 | asection *symsec = NULL; | |
5786 | if (h->root.type == bfd_link_hash_defined | |
5787 | || h->root.type == bfd_link_hash_defweak) | |
5788 | symsec = h->root.u.def.section; | |
5789 | *symsecp = symsec; | |
5790 | } | |
5791 | ||
e7b938ca | 5792 | if (tls_maskp != NULL) |
411e1bfb AM |
5793 | { |
5794 | struct ppc_link_hash_entry *eh; | |
5795 | ||
5796 | eh = (struct ppc_link_hash_entry *) h; | |
e7b938ca | 5797 | *tls_maskp = &eh->tls_mask; |
411e1bfb AM |
5798 | } |
5799 | } | |
5800 | else | |
5801 | { | |
5802 | Elf_Internal_Sym *sym; | |
5803 | Elf_Internal_Sym *locsyms = *locsymsp; | |
5804 | ||
5805 | if (locsyms == NULL) | |
5806 | { | |
5807 | locsyms = (Elf_Internal_Sym *) symtab_hdr->contents; | |
5808 | if (locsyms == NULL) | |
5809 | locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr, | |
5810 | symtab_hdr->sh_info, | |
5811 | 0, NULL, NULL, NULL); | |
5812 | if (locsyms == NULL) | |
5813 | return FALSE; | |
5814 | *locsymsp = locsyms; | |
5815 | } | |
5816 | sym = locsyms + r_symndx; | |
5817 | ||
5818 | if (hp != NULL) | |
5819 | *hp = NULL; | |
5820 | ||
5821 | if (symp != NULL) | |
5822 | *symp = sym; | |
5823 | ||
5824 | if (symsecp != NULL) | |
5825 | { | |
5826 | asection *symsec = NULL; | |
5827 | if ((sym->st_shndx != SHN_UNDEF | |
5828 | && sym->st_shndx < SHN_LORESERVE) | |
5829 | || sym->st_shndx > SHN_HIRESERVE) | |
5830 | symsec = bfd_section_from_elf_index (ibfd, sym->st_shndx); | |
5831 | *symsecp = symsec; | |
5832 | } | |
5833 | ||
e7b938ca | 5834 | if (tls_maskp != NULL) |
411e1bfb AM |
5835 | { |
5836 | struct got_entry **lgot_ents; | |
e7b938ca | 5837 | char *tls_mask; |
411e1bfb | 5838 | |
e7b938ca | 5839 | tls_mask = NULL; |
411e1bfb AM |
5840 | lgot_ents = elf_local_got_ents (ibfd); |
5841 | if (lgot_ents != NULL) | |
5842 | { | |
e7b938ca AM |
5843 | char *lgot_masks = (char *) (lgot_ents + symtab_hdr->sh_info); |
5844 | tls_mask = &lgot_masks[r_symndx]; | |
411e1bfb | 5845 | } |
e7b938ca | 5846 | *tls_maskp = tls_mask; |
411e1bfb AM |
5847 | } |
5848 | } | |
5849 | return TRUE; | |
5850 | } | |
5851 | ||
e7b938ca | 5852 | /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on |
951fd09b | 5853 | error, 2 on a toc GD type suitable for optimization, 3 on a toc LD |
ad8e1ba5 | 5854 | type suitable for optimization, and 1 otherwise. */ |
951fd09b AM |
5855 | |
5856 | static int | |
0d4792f7 AM |
5857 | get_tls_mask (char **tls_maskp, unsigned long *toc_symndx, |
5858 | Elf_Internal_Sym **locsymsp, | |
4ce794b7 | 5859 | const Elf_Internal_Rela *rel, bfd *ibfd) |
411e1bfb AM |
5860 | { |
5861 | unsigned long r_symndx; | |
0d4792f7 | 5862 | int next_r; |
411e1bfb AM |
5863 | struct elf_link_hash_entry *h; |
5864 | Elf_Internal_Sym *sym; | |
5865 | asection *sec; | |
5866 | bfd_vma off; | |
5867 | ||
5868 | r_symndx = ELF64_R_SYM (rel->r_info); | |
e7b938ca | 5869 | if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd)) |
951fd09b | 5870 | return 0; |
411e1bfb | 5871 | |
e7b938ca | 5872 | if ((*tls_maskp != NULL && **tls_maskp != 0) |
411e1bfb AM |
5873 | || sec == NULL |
5874 | || ppc64_elf_section_data (sec)->t_symndx == NULL) | |
951fd09b | 5875 | return 1; |
411e1bfb AM |
5876 | |
5877 | /* Look inside a TOC section too. */ | |
5878 | if (h != NULL) | |
5879 | { | |
5880 | BFD_ASSERT (h->root.type == bfd_link_hash_defined); | |
5881 | off = h->root.u.def.value; | |
5882 | } | |
5883 | else | |
5884 | off = sym->st_value; | |
5885 | off += rel->r_addend; | |
5886 | BFD_ASSERT (off % 8 == 0); | |
5887 | r_symndx = ppc64_elf_section_data (sec)->t_symndx[off / 8]; | |
951fd09b | 5888 | next_r = ppc64_elf_section_data (sec)->t_symndx[off / 8 + 1]; |
e7b938ca | 5889 | if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd)) |
951fd09b | 5890 | return 0; |
0d4792f7 AM |
5891 | if (toc_symndx != NULL) |
5892 | *toc_symndx = r_symndx; | |
5893 | if ((h == NULL | |
5894 | || ((h->root.type == bfd_link_hash_defined | |
5895 | || h->root.type == bfd_link_hash_defweak) | |
f5385ebf | 5896 | && !h->def_dynamic)) |
0d4792f7 AM |
5897 | && (next_r == -1 || next_r == -2)) |
5898 | return 1 - next_r; | |
951fd09b | 5899 | return 1; |
411e1bfb AM |
5900 | } |
5901 | ||
754021d0 | 5902 | /* Adjust all global syms defined in opd sections. In gcc generated |
8387904d | 5903 | code for the old ABI, these will already have been done. */ |
754021d0 AM |
5904 | |
5905 | static bfd_boolean | |
5906 | adjust_opd_syms (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED) | |
5907 | { | |
5908 | struct ppc_link_hash_entry *eh; | |
5909 | asection *sym_sec; | |
5910 | long *opd_adjust; | |
5911 | ||
5912 | if (h->root.type == bfd_link_hash_indirect) | |
5913 | return TRUE; | |
5914 | ||
5915 | if (h->root.type == bfd_link_hash_warning) | |
5916 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
5917 | ||
5918 | if (h->root.type != bfd_link_hash_defined | |
5919 | && h->root.type != bfd_link_hash_defweak) | |
5920 | return TRUE; | |
5921 | ||
5922 | eh = (struct ppc_link_hash_entry *) h; | |
5923 | if (eh->adjust_done) | |
5924 | return TRUE; | |
5925 | ||
5926 | sym_sec = eh->elf.root.u.def.section; | |
4025353c AM |
5927 | opd_adjust = get_opd_info (sym_sec); |
5928 | if (opd_adjust != NULL) | |
754021d0 | 5929 | { |
3f764659 | 5930 | long adjust = opd_adjust[eh->elf.root.u.def.value / 8]; |
4025353c AM |
5931 | if (adjust == -1) |
5932 | { | |
5933 | /* This entry has been deleted. */ | |
81688140 AM |
5934 | asection *dsec = ppc64_elf_tdata (sym_sec->owner)->deleted_section; |
5935 | if (dsec == NULL) | |
5936 | { | |
5937 | for (dsec = sym_sec->owner->sections; dsec; dsec = dsec->next) | |
5938 | if (elf_discarded_section (dsec)) | |
5939 | { | |
5940 | ppc64_elf_tdata (sym_sec->owner)->deleted_section = dsec; | |
5941 | break; | |
5942 | } | |
5943 | } | |
4025353c | 5944 | eh->elf.root.u.def.value = 0; |
81688140 | 5945 | eh->elf.root.u.def.section = dsec; |
4025353c AM |
5946 | } |
5947 | else | |
5948 | eh->elf.root.u.def.value += adjust; | |
754021d0 AM |
5949 | eh->adjust_done = 1; |
5950 | } | |
5951 | return TRUE; | |
5952 | } | |
5953 | ||
8c1d1bb8 AM |
5954 | /* Handles decrementing dynamic reloc counts for the reloc specified by |
5955 | R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM_SEC | |
5956 | have already been determined. */ | |
5957 | ||
5958 | static bfd_boolean | |
5959 | dec_dynrel_count (bfd_vma r_info, | |
5960 | asection *sec, | |
5961 | struct bfd_link_info *info, | |
5962 | Elf_Internal_Sym **local_syms, | |
5963 | struct elf_link_hash_entry *h, | |
5964 | asection *sym_sec) | |
5965 | { | |
5966 | enum elf_ppc64_reloc_type r_type; | |
5967 | struct ppc_dyn_relocs *p; | |
5968 | struct ppc_dyn_relocs **pp; | |
5969 | ||
5970 | /* Can this reloc be dynamic? This switch, and later tests here | |
5971 | should be kept in sync with the code in check_relocs. */ | |
5972 | r_type = ELF64_R_TYPE (r_info); | |
5973 | switch (r_type) | |
5974 | { | |
5975 | default: | |
5976 | return TRUE; | |
5977 | ||
5978 | case R_PPC64_TPREL16: | |
5979 | case R_PPC64_TPREL16_LO: | |
5980 | case R_PPC64_TPREL16_HI: | |
5981 | case R_PPC64_TPREL16_HA: | |
5982 | case R_PPC64_TPREL16_DS: | |
5983 | case R_PPC64_TPREL16_LO_DS: | |
5984 | case R_PPC64_TPREL16_HIGHER: | |
5985 | case R_PPC64_TPREL16_HIGHERA: | |
5986 | case R_PPC64_TPREL16_HIGHEST: | |
5987 | case R_PPC64_TPREL16_HIGHESTA: | |
5988 | if (!info->shared) | |
5989 | return TRUE; | |
5990 | ||
5991 | case R_PPC64_TPREL64: | |
5992 | case R_PPC64_DTPMOD64: | |
5993 | case R_PPC64_DTPREL64: | |
5994 | case R_PPC64_ADDR64: | |
5995 | case R_PPC64_REL30: | |
5996 | case R_PPC64_REL32: | |
5997 | case R_PPC64_REL64: | |
5998 | case R_PPC64_ADDR14: | |
5999 | case R_PPC64_ADDR14_BRNTAKEN: | |
6000 | case R_PPC64_ADDR14_BRTAKEN: | |
6001 | case R_PPC64_ADDR16: | |
6002 | case R_PPC64_ADDR16_DS: | |
6003 | case R_PPC64_ADDR16_HA: | |
6004 | case R_PPC64_ADDR16_HI: | |
6005 | case R_PPC64_ADDR16_HIGHER: | |
6006 | case R_PPC64_ADDR16_HIGHERA: | |
6007 | case R_PPC64_ADDR16_HIGHEST: | |
6008 | case R_PPC64_ADDR16_HIGHESTA: | |
6009 | case R_PPC64_ADDR16_LO: | |
6010 | case R_PPC64_ADDR16_LO_DS: | |
6011 | case R_PPC64_ADDR24: | |
6012 | case R_PPC64_ADDR32: | |
6013 | case R_PPC64_UADDR16: | |
6014 | case R_PPC64_UADDR32: | |
6015 | case R_PPC64_UADDR64: | |
6016 | case R_PPC64_TOC: | |
6017 | break; | |
6018 | } | |
6019 | ||
6020 | if (local_syms != NULL) | |
6021 | { | |
6022 | unsigned long r_symndx; | |
6023 | Elf_Internal_Sym *sym; | |
6024 | bfd *ibfd = sec->owner; | |
6025 | ||
6026 | r_symndx = ELF64_R_SYM (r_info); | |
6027 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, local_syms, r_symndx, ibfd)) | |
6028 | return FALSE; | |
6029 | } | |
6030 | ||
6031 | if ((info->shared | |
6032 | && (MUST_BE_DYN_RELOC (r_type) | |
6033 | || (h != NULL | |
6034 | && (!info->symbolic | |
6035 | || h->root.type == bfd_link_hash_defweak | |
6036 | || !h->def_regular)))) | |
6037 | || (ELIMINATE_COPY_RELOCS | |
6038 | && !info->shared | |
6039 | && h != NULL | |
6040 | && (h->root.type == bfd_link_hash_defweak | |
6041 | || !h->def_regular))) | |
6042 | ; | |
6043 | else | |
6044 | return TRUE; | |
6045 | ||
6046 | if (h != NULL) | |
6047 | pp = &((struct ppc_link_hash_entry *) h)->dyn_relocs; | |
6048 | else if (sym_sec != NULL) | |
6049 | pp = (struct ppc_dyn_relocs **) &elf_section_data (sym_sec)->local_dynrel; | |
6050 | else | |
6051 | pp = (struct ppc_dyn_relocs **) &elf_section_data (sec)->local_dynrel; | |
6052 | ||
6053 | while ((p = *pp) != NULL) | |
6054 | { | |
6055 | if (p->sec == sec) | |
6056 | { | |
6057 | if (!MUST_BE_DYN_RELOC (r_type)) | |
6058 | p->pc_count -= 1; | |
6059 | p->count -= 1; | |
6060 | if (p->count == 0) | |
6061 | *pp = p->next; | |
6062 | return TRUE; | |
6063 | } | |
6064 | pp = &p->next; | |
6065 | } | |
6066 | ||
6067 | (*_bfd_error_handler) (_("dynreloc miscount for %B, section %A"), | |
6068 | sec->owner, sec); | |
6069 | bfd_set_error (bfd_error_bad_value); | |
6070 | return FALSE; | |
6071 | } | |
6072 | ||
754021d0 AM |
6073 | /* Remove unused Official Procedure Descriptor entries. Currently we |
6074 | only remove those associated with functions in discarded link-once | |
6075 | sections, or weakly defined functions that have been overridden. It | |
6076 | would be possible to remove many more entries for statically linked | |
6077 | applications. */ | |
6078 | ||
b34976b6 | 6079 | bfd_boolean |
3f764659 JJ |
6080 | ppc64_elf_edit_opd (bfd *obfd, struct bfd_link_info *info, |
6081 | bfd_boolean non_overlapping) | |
1e2f5b6e AM |
6082 | { |
6083 | bfd *ibfd; | |
754021d0 | 6084 | bfd_boolean some_edited = FALSE; |
3f764659 | 6085 | asection *need_pad = NULL; |
1e2f5b6e | 6086 | |
411e1bfb | 6087 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) |
1e2f5b6e AM |
6088 | { |
6089 | asection *sec; | |
6090 | Elf_Internal_Rela *relstart, *rel, *relend; | |
6091 | Elf_Internal_Shdr *symtab_hdr; | |
6cdc0ccc | 6092 | Elf_Internal_Sym *local_syms; |
1e2f5b6e AM |
6093 | struct elf_link_hash_entry **sym_hashes; |
6094 | bfd_vma offset; | |
d6fe2dc1 | 6095 | bfd_size_type amt; |
4025353c | 6096 | long *opd_adjust; |
3f764659 JJ |
6097 | bfd_boolean need_edit, add_aux_fields; |
6098 | bfd_size_type cnt_16b = 0; | |
1e2f5b6e AM |
6099 | |
6100 | sec = bfd_get_section_by_name (ibfd, ".opd"); | |
6101 | if (sec == NULL) | |
6102 | continue; | |
6103 | ||
3f764659 | 6104 | amt = sec->size * sizeof (long) / 8; |
4025353c AM |
6105 | opd_adjust = get_opd_info (sec); |
6106 | if (opd_adjust == NULL) | |
d6fe2dc1 | 6107 | { |
4b85d634 AM |
6108 | /* check_relocs hasn't been called. Must be a ld -r link |
6109 | or --just-symbols object. */ | |
4025353c AM |
6110 | opd_adjust = bfd_zalloc (obfd, amt); |
6111 | ppc64_elf_section_data (sec)->opd.adjust = opd_adjust; | |
d6fe2dc1 | 6112 | } |
4025353c | 6113 | memset (opd_adjust, 0, amt); |
1e2f5b6e | 6114 | |
4b85d634 AM |
6115 | if (sec->sec_info_type == ELF_INFO_TYPE_JUST_SYMS) |
6116 | continue; | |
6117 | ||
1e2f5b6e AM |
6118 | if (sec->output_section == bfd_abs_section_ptr) |
6119 | continue; | |
6120 | ||
6121 | /* Look through the section relocs. */ | |
6122 | if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0) | |
6123 | continue; | |
6124 | ||
6cdc0ccc | 6125 | local_syms = NULL; |
1e2f5b6e AM |
6126 | symtab_hdr = &elf_tdata (ibfd)->symtab_hdr; |
6127 | sym_hashes = elf_sym_hashes (ibfd); | |
6128 | ||
6129 | /* Read the relocations. */ | |
4ce794b7 | 6130 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, |
45d6a902 | 6131 | info->keep_memory); |
1e2f5b6e | 6132 | if (relstart == NULL) |
b34976b6 | 6133 | return FALSE; |
1e2f5b6e AM |
6134 | |
6135 | /* First run through the relocs to check they are sane, and to | |
6136 | determine whether we need to edit this opd section. */ | |
b34976b6 | 6137 | need_edit = FALSE; |
3f764659 | 6138 | need_pad = sec; |
1e2f5b6e AM |
6139 | offset = 0; |
6140 | relend = relstart + sec->reloc_count; | |
50bc7936 | 6141 | for (rel = relstart; rel < relend; ) |
1e2f5b6e | 6142 | { |
04c9666a | 6143 | enum elf_ppc64_reloc_type r_type; |
1e2f5b6e AM |
6144 | unsigned long r_symndx; |
6145 | asection *sym_sec; | |
6146 | struct elf_link_hash_entry *h; | |
6147 | Elf_Internal_Sym *sym; | |
6148 | ||
3f764659 | 6149 | /* .opd contains a regular array of 16 or 24 byte entries. We're |
1e2f5b6e AM |
6150 | only interested in the reloc pointing to a function entry |
6151 | point. */ | |
50bc7936 AM |
6152 | if (rel->r_offset != offset |
6153 | || rel + 1 >= relend | |
6154 | || (rel + 1)->r_offset != offset + 8) | |
1e2f5b6e AM |
6155 | { |
6156 | /* If someone messes with .opd alignment then after a | |
6157 | "ld -r" we might have padding in the middle of .opd. | |
6158 | Also, there's nothing to prevent someone putting | |
6159 | something silly in .opd with the assembler. No .opd | |
b34976b6 | 6160 | optimization for them! */ |
3f764659 | 6161 | broken_opd: |
1e2f5b6e | 6162 | (*_bfd_error_handler) |
d003868e | 6163 | (_("%B: .opd is not a regular array of opd entries"), ibfd); |
b34976b6 | 6164 | need_edit = FALSE; |
1e2f5b6e AM |
6165 | break; |
6166 | } | |
6167 | ||
50bc7936 AM |
6168 | if ((r_type = ELF64_R_TYPE (rel->r_info)) != R_PPC64_ADDR64 |
6169 | || (r_type = ELF64_R_TYPE ((rel + 1)->r_info)) != R_PPC64_TOC) | |
6170 | { | |
6171 | (*_bfd_error_handler) | |
d003868e AM |
6172 | (_("%B: unexpected reloc type %u in .opd section"), |
6173 | ibfd, r_type); | |
50bc7936 AM |
6174 | need_edit = FALSE; |
6175 | break; | |
6176 | } | |
6177 | ||
1e2f5b6e | 6178 | r_symndx = ELF64_R_SYM (rel->r_info); |
411e1bfb AM |
6179 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, |
6180 | r_symndx, ibfd)) | |
50bc7936 | 6181 | goto error_ret; |
1e2f5b6e AM |
6182 | |
6183 | if (sym_sec == NULL || sym_sec->owner == NULL) | |
6184 | { | |
411e1bfb AM |
6185 | const char *sym_name; |
6186 | if (h != NULL) | |
6187 | sym_name = h->root.root.string; | |
6188 | else | |
26c61ae5 L |
6189 | sym_name = bfd_elf_sym_name (ibfd, symtab_hdr, sym, |
6190 | sym_sec); | |
411e1bfb | 6191 | |
1e2f5b6e | 6192 | (*_bfd_error_handler) |
d003868e AM |
6193 | (_("%B: undefined sym `%s' in .opd section"), |
6194 | ibfd, sym_name); | |
b34976b6 | 6195 | need_edit = FALSE; |
1e2f5b6e AM |
6196 | break; |
6197 | } | |
6198 | ||
51020317 AM |
6199 | /* opd entries are always for functions defined in the |
6200 | current input bfd. If the symbol isn't defined in the | |
6201 | input bfd, then we won't be using the function in this | |
6202 | bfd; It must be defined in a linkonce section in another | |
6203 | bfd, or is weak. It's also possible that we are | |
6204 | discarding the function due to a linker script /DISCARD/, | |
6205 | which we test for via the output_section. */ | |
6206 | if (sym_sec->owner != ibfd | |
6207 | || sym_sec->output_section == bfd_abs_section_ptr) | |
b34976b6 | 6208 | need_edit = TRUE; |
1e2f5b6e | 6209 | |
50bc7936 | 6210 | rel += 2; |
3f764659 JJ |
6211 | if (rel == relend |
6212 | || (rel + 1 == relend && rel->r_offset == offset + 16)) | |
6213 | { | |
6214 | if (sec->size == offset + 24) | |
6215 | { | |
6216 | need_pad = NULL; | |
6217 | break; | |
6218 | } | |
6219 | if (rel == relend && sec->size == offset + 16) | |
6220 | { | |
6221 | cnt_16b++; | |
6222 | break; | |
6223 | } | |
6224 | goto broken_opd; | |
6225 | } | |
6226 | ||
6227 | if (rel->r_offset == offset + 24) | |
6228 | offset += 24; | |
6229 | else if (rel->r_offset != offset + 16) | |
6230 | goto broken_opd; | |
6231 | else if (rel + 1 < relend | |
6232 | && ELF64_R_TYPE (rel[0].r_info) == R_PPC64_ADDR64 | |
6233 | && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOC) | |
6234 | { | |
6235 | offset += 16; | |
6236 | cnt_16b++; | |
6237 | } | |
6238 | else if (rel + 2 < relend | |
6239 | && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_ADDR64 | |
6240 | && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_TOC) | |
6241 | { | |
6242 | offset += 24; | |
6243 | rel += 1; | |
6244 | } | |
6245 | else | |
6246 | goto broken_opd; | |
1e2f5b6e AM |
6247 | } |
6248 | ||
3f764659 JJ |
6249 | add_aux_fields = non_overlapping && cnt_16b > 0; |
6250 | ||
6251 | if (need_edit || add_aux_fields) | |
1e2f5b6e AM |
6252 | { |
6253 | Elf_Internal_Rela *write_rel; | |
6254 | bfd_byte *rptr, *wptr; | |
3f764659 | 6255 | bfd_byte *new_contents = NULL; |
b34976b6 | 6256 | bfd_boolean skip; |
3f764659 | 6257 | long opd_ent_size; |
1e2f5b6e AM |
6258 | |
6259 | /* This seems a waste of time as input .opd sections are all | |
6260 | zeros as generated by gcc, but I suppose there's no reason | |
6261 | this will always be so. We might start putting something in | |
6262 | the third word of .opd entries. */ | |
6263 | if ((sec->flags & SEC_IN_MEMORY) == 0) | |
6264 | { | |
eea6121a AM |
6265 | bfd_byte *loc; |
6266 | if (!bfd_malloc_and_get_section (ibfd, sec, &loc)) | |
6cdc0ccc | 6267 | { |
eea6121a AM |
6268 | if (loc != NULL) |
6269 | free (loc); | |
50bc7936 | 6270 | error_ret: |
6cdc0ccc AM |
6271 | if (local_syms != NULL |
6272 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
6273 | free (local_syms); | |
6cdc0ccc AM |
6274 | if (elf_section_data (sec)->relocs != relstart) |
6275 | free (relstart); | |
b34976b6 | 6276 | return FALSE; |
6cdc0ccc | 6277 | } |
1e2f5b6e AM |
6278 | sec->contents = loc; |
6279 | sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS); | |
6280 | } | |
6281 | ||
6282 | elf_section_data (sec)->relocs = relstart; | |
6283 | ||
6284 | wptr = sec->contents; | |
6285 | rptr = sec->contents; | |
3f764659 JJ |
6286 | new_contents = sec->contents; |
6287 | ||
6288 | if (add_aux_fields) | |
6289 | { | |
6290 | new_contents = bfd_malloc (sec->size + cnt_16b * 8); | |
6291 | if (new_contents == NULL) | |
6292 | return FALSE; | |
6293 | need_pad = FALSE; | |
6294 | wptr = new_contents; | |
6295 | } | |
6296 | ||
1e2f5b6e | 6297 | write_rel = relstart; |
b34976b6 | 6298 | skip = FALSE; |
1e2f5b6e | 6299 | offset = 0; |
3f764659 | 6300 | opd_ent_size = 0; |
1e2f5b6e AM |
6301 | for (rel = relstart; rel < relend; rel++) |
6302 | { | |
50bc7936 AM |
6303 | unsigned long r_symndx; |
6304 | asection *sym_sec; | |
6305 | struct elf_link_hash_entry *h; | |
6306 | Elf_Internal_Sym *sym; | |
6307 | ||
6308 | r_symndx = ELF64_R_SYM (rel->r_info); | |
6309 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
d37c89e5 | 6310 | r_symndx, ibfd)) |
50bc7936 AM |
6311 | goto error_ret; |
6312 | ||
1e2f5b6e AM |
6313 | if (rel->r_offset == offset) |
6314 | { | |
50bc7936 | 6315 | struct ppc_link_hash_entry *fdh = NULL; |
3f764659 JJ |
6316 | |
6317 | /* See if the .opd entry is full 24 byte or | |
6318 | 16 byte (with fd_aux entry overlapped with next | |
6319 | fd_func). */ | |
6320 | opd_ent_size = 24; | |
6321 | if ((rel + 2 == relend && sec->size == offset + 16) | |
6322 | || (rel + 3 < relend | |
6323 | && rel[2].r_offset == offset + 16 | |
6324 | && rel[3].r_offset == offset + 24 | |
6325 | && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_ADDR64 | |
6326 | && ELF64_R_TYPE (rel[3].r_info) == R_PPC64_TOC)) | |
6327 | opd_ent_size = 16; | |
6328 | ||
4025353c AM |
6329 | if (h != NULL |
6330 | && h->root.root.string[0] == '.') | |
c4f68ce3 AM |
6331 | { |
6332 | fdh = get_fdh ((struct ppc_link_hash_entry *) h, | |
6333 | ppc_hash_table (info)); | |
6334 | if (fdh != NULL | |
6335 | && fdh->elf.root.type != bfd_link_hash_defined | |
6336 | && fdh->elf.root.type != bfd_link_hash_defweak) | |
6337 | fdh = NULL; | |
6338 | } | |
1e2f5b6e | 6339 | |
51020317 AM |
6340 | skip = (sym_sec->owner != ibfd |
6341 | || sym_sec->output_section == bfd_abs_section_ptr); | |
a4aa0fb7 AM |
6342 | if (skip) |
6343 | { | |
4025353c | 6344 | if (fdh != NULL && sym_sec->owner == ibfd) |
a4aa0fb7 AM |
6345 | { |
6346 | /* Arrange for the function descriptor sym | |
6347 | to be dropped. */ | |
d6fe2dc1 AM |
6348 | fdh->elf.root.u.def.value = 0; |
6349 | fdh->elf.root.u.def.section = sym_sec; | |
a4aa0fb7 | 6350 | } |
3f764659 | 6351 | opd_adjust[rel->r_offset / 8] = -1; |
a4aa0fb7 AM |
6352 | } |
6353 | else | |
1e2f5b6e AM |
6354 | { |
6355 | /* We'll be keeping this opd entry. */ | |
6356 | ||
4025353c | 6357 | if (fdh != NULL) |
1e2f5b6e | 6358 | { |
754021d0 AM |
6359 | /* Redefine the function descriptor symbol to |
6360 | this location in the opd section. It is | |
6361 | necessary to update the value here rather | |
6362 | than using an array of adjustments as we do | |
6363 | for local symbols, because various places | |
6364 | in the generic ELF code use the value | |
6365 | stored in u.def.value. */ | |
3f764659 | 6366 | fdh->elf.root.u.def.value = wptr - new_contents; |
754021d0 | 6367 | fdh->adjust_done = 1; |
1e2f5b6e | 6368 | } |
754021d0 AM |
6369 | |
6370 | /* Local syms are a bit tricky. We could | |
6371 | tweak them as they can be cached, but | |
6372 | we'd need to look through the local syms | |
6373 | for the function descriptor sym which we | |
6374 | don't have at the moment. So keep an | |
6375 | array of adjustments. */ | |
3f764659 JJ |
6376 | opd_adjust[rel->r_offset / 8] |
6377 | = (wptr - new_contents) - (rptr - sec->contents); | |
1e2f5b6e AM |
6378 | |
6379 | if (wptr != rptr) | |
3f764659 JJ |
6380 | memcpy (wptr, rptr, opd_ent_size); |
6381 | wptr += opd_ent_size; | |
6382 | if (add_aux_fields && opd_ent_size == 16) | |
6383 | { | |
6384 | memset (wptr, '\0', 8); | |
6385 | wptr += 8; | |
6386 | } | |
1e2f5b6e | 6387 | } |
3f764659 JJ |
6388 | rptr += opd_ent_size; |
6389 | offset += opd_ent_size; | |
1e2f5b6e AM |
6390 | } |
6391 | ||
50bc7936 AM |
6392 | if (skip) |
6393 | { | |
8c1d1bb8 AM |
6394 | if (!dec_dynrel_count (rel->r_info, sec, info, |
6395 | NULL, h, sym_sec)) | |
6396 | goto error_ret; | |
50bc7936 AM |
6397 | } |
6398 | else | |
1e2f5b6e | 6399 | { |
50bc7936 AM |
6400 | /* We need to adjust any reloc offsets to point to the |
6401 | new opd entries. While we're at it, we may as well | |
6402 | remove redundant relocs. */ | |
3f764659 | 6403 | rel->r_offset += opd_adjust[(offset - opd_ent_size) / 8]; |
1e2f5b6e AM |
6404 | if (write_rel != rel) |
6405 | memcpy (write_rel, rel, sizeof (*rel)); | |
6406 | ++write_rel; | |
6407 | } | |
6408 | } | |
6409 | ||
3f764659 | 6410 | sec->size = wptr - new_contents; |
1e2f5b6e | 6411 | sec->reloc_count = write_rel - relstart; |
3f764659 JJ |
6412 | if (add_aux_fields) |
6413 | { | |
6414 | free (sec->contents); | |
6415 | sec->contents = new_contents; | |
6416 | } | |
6417 | ||
cdcf6e38 AM |
6418 | /* Fudge the size too, as this is used later in |
6419 | elf_bfd_final_link if we are emitting relocs. */ | |
6420 | elf_section_data (sec)->rel_hdr.sh_size | |
6421 | = sec->reloc_count * elf_section_data (sec)->rel_hdr.sh_entsize; | |
6422 | BFD_ASSERT (elf_section_data (sec)->rel_hdr2 == NULL); | |
754021d0 | 6423 | some_edited = TRUE; |
1e2f5b6e | 6424 | } |
6cdc0ccc | 6425 | else if (elf_section_data (sec)->relocs != relstart) |
1e2f5b6e | 6426 | free (relstart); |
6cdc0ccc | 6427 | |
411e1bfb AM |
6428 | if (local_syms != NULL |
6429 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
6430 | { | |
6431 | if (!info->keep_memory) | |
6432 | free (local_syms); | |
6433 | else | |
6434 | symtab_hdr->contents = (unsigned char *) local_syms; | |
6435 | } | |
6436 | } | |
6437 | ||
754021d0 AM |
6438 | if (some_edited) |
6439 | elf_link_hash_traverse (elf_hash_table (info), adjust_opd_syms, NULL); | |
6440 | ||
3f764659 JJ |
6441 | /* If we are doing a final link and the last .opd entry is just 16 byte |
6442 | long, add a 8 byte padding after it. */ | |
6443 | if (need_pad != NULL && !info->relocatable) | |
6444 | { | |
6445 | bfd_byte *p; | |
6446 | ||
6447 | if ((need_pad->flags & SEC_IN_MEMORY) == 0) | |
6448 | { | |
6449 | BFD_ASSERT (need_pad->size > 0); | |
6450 | ||
6451 | p = bfd_malloc (need_pad->size + 8); | |
6452 | if (p == NULL) | |
6453 | return FALSE; | |
699733f6 | 6454 | |
3f764659 JJ |
6455 | if (! bfd_get_section_contents (need_pad->owner, need_pad, |
6456 | p, 0, need_pad->size)) | |
6457 | return FALSE; | |
6458 | ||
6459 | need_pad->contents = p; | |
6460 | need_pad->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS); | |
6461 | } | |
6462 | else | |
6463 | { | |
6464 | p = bfd_realloc (need_pad->contents, need_pad->size + 8); | |
6465 | if (p == NULL) | |
6466 | return FALSE; | |
6467 | ||
6468 | need_pad->contents = p; | |
6469 | } | |
6470 | ||
6471 | memset (need_pad->contents + need_pad->size, 0, 8); | |
6472 | need_pad->size += 8; | |
6473 | } | |
6474 | ||
411e1bfb AM |
6475 | return TRUE; |
6476 | } | |
6477 | ||
e1918d23 | 6478 | /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */ |
411e1bfb | 6479 | |
e1918d23 | 6480 | asection * |
4ce794b7 | 6481 | ppc64_elf_tls_setup (bfd *obfd, struct bfd_link_info *info) |
411e1bfb | 6482 | { |
411e1bfb AM |
6483 | struct ppc_link_hash_table *htab; |
6484 | ||
411e1bfb | 6485 | htab = ppc_hash_table (info); |
a48ebf4d AM |
6486 | if (htab->tls_get_addr != NULL) |
6487 | { | |
8387904d | 6488 | struct ppc_link_hash_entry *h = htab->tls_get_addr; |
a48ebf4d | 6489 | |
8387904d AM |
6490 | while (h->elf.root.type == bfd_link_hash_indirect |
6491 | || h->elf.root.type == bfd_link_hash_warning) | |
6492 | h = (struct ppc_link_hash_entry *) h->elf.root.u.i.link; | |
a48ebf4d AM |
6493 | |
6494 | htab->tls_get_addr = h; | |
8387904d AM |
6495 | |
6496 | if (htab->tls_get_addr_fd == NULL | |
6497 | && h->oh != NULL | |
c4f68ce3 AM |
6498 | && h->oh->is_func_descriptor |
6499 | && (h->oh->elf.root.type == bfd_link_hash_defined | |
6500 | || h->oh->elf.root.type == bfd_link_hash_defweak)) | |
8387904d AM |
6501 | htab->tls_get_addr_fd = h->oh; |
6502 | } | |
6503 | ||
6504 | if (htab->tls_get_addr_fd != NULL) | |
6505 | { | |
6506 | struct ppc_link_hash_entry *h = htab->tls_get_addr_fd; | |
6507 | ||
6508 | while (h->elf.root.type == bfd_link_hash_indirect | |
6509 | || h->elf.root.type == bfd_link_hash_warning) | |
6510 | h = (struct ppc_link_hash_entry *) h->elf.root.u.i.link; | |
6511 | ||
6512 | htab->tls_get_addr_fd = h; | |
a48ebf4d AM |
6513 | } |
6514 | ||
e1918d23 | 6515 | return _bfd_elf_tls_setup (obfd, info); |
951fd09b | 6516 | } |
411e1bfb | 6517 | |
951fd09b AM |
6518 | /* Run through all the TLS relocs looking for optimization |
6519 | opportunities. The linker has been hacked (see ppc64elf.em) to do | |
6520 | a preliminary section layout so that we know the TLS segment | |
6521 | offsets. We can't optimize earlier because some optimizations need | |
6522 | to know the tp offset, and we need to optimize before allocating | |
6523 | dynamic relocations. */ | |
6524 | ||
6525 | bfd_boolean | |
4ce794b7 | 6526 | ppc64_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED, struct bfd_link_info *info) |
951fd09b AM |
6527 | { |
6528 | bfd *ibfd; | |
6529 | asection *sec; | |
6530 | struct ppc_link_hash_table *htab; | |
6531 | ||
1049f94e | 6532 | if (info->relocatable || info->shared) |
411e1bfb AM |
6533 | return TRUE; |
6534 | ||
951fd09b | 6535 | htab = ppc_hash_table (info); |
411e1bfb AM |
6536 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) |
6537 | { | |
6538 | Elf_Internal_Sym *locsyms = NULL; | |
6539 | ||
6540 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
6541 | if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section)) | |
6542 | { | |
6543 | Elf_Internal_Rela *relstart, *rel, *relend; | |
6544 | int expecting_tls_get_addr; | |
6545 | ||
6546 | /* Read the relocations. */ | |
4ce794b7 | 6547 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, |
45d6a902 | 6548 | info->keep_memory); |
411e1bfb AM |
6549 | if (relstart == NULL) |
6550 | return FALSE; | |
6551 | ||
6552 | expecting_tls_get_addr = 0; | |
6553 | relend = relstart + sec->reloc_count; | |
6554 | for (rel = relstart; rel < relend; rel++) | |
6555 | { | |
6556 | enum elf_ppc64_reloc_type r_type; | |
6557 | unsigned long r_symndx; | |
6558 | struct elf_link_hash_entry *h; | |
6559 | Elf_Internal_Sym *sym; | |
6560 | asection *sym_sec; | |
e7b938ca AM |
6561 | char *tls_mask; |
6562 | char tls_set, tls_clear, tls_type = 0; | |
411e1bfb | 6563 | bfd_vma value; |
951fd09b | 6564 | bfd_boolean ok_tprel, is_local; |
411e1bfb AM |
6565 | |
6566 | r_symndx = ELF64_R_SYM (rel->r_info); | |
e7b938ca | 6567 | if (!get_sym_h (&h, &sym, &sym_sec, &tls_mask, &locsyms, |
411e1bfb AM |
6568 | r_symndx, ibfd)) |
6569 | { | |
6570 | err_free_rel: | |
6571 | if (elf_section_data (sec)->relocs != relstart) | |
6572 | free (relstart); | |
6573 | if (locsyms != NULL | |
6574 | && (elf_tdata (ibfd)->symtab_hdr.contents | |
6575 | != (unsigned char *) locsyms)) | |
6576 | free (locsyms); | |
6577 | return FALSE; | |
6578 | } | |
6579 | ||
6580 | if (h != NULL) | |
6581 | { | |
6582 | if (h->root.type != bfd_link_hash_defined | |
6583 | && h->root.type != bfd_link_hash_defweak) | |
6584 | continue; | |
6585 | value = h->root.u.def.value; | |
6586 | } | |
6587 | else | |
4025353c AM |
6588 | /* Symbols referenced by TLS relocs must be of type |
6589 | STT_TLS. So no need for .opd local sym adjust. */ | |
6590 | value = sym->st_value; | |
951fd09b | 6591 | |
411e1bfb | 6592 | ok_tprel = FALSE; |
951fd09b AM |
6593 | is_local = FALSE; |
6594 | if (h == NULL | |
f5385ebf | 6595 | || !h->def_dynamic) |
411e1bfb | 6596 | { |
951fd09b | 6597 | is_local = TRUE; |
411e1bfb AM |
6598 | value += sym_sec->output_offset; |
6599 | value += sym_sec->output_section->vma; | |
e1918d23 | 6600 | value -= htab->elf.tls_sec->vma; |
411e1bfb AM |
6601 | ok_tprel = (value + TP_OFFSET + ((bfd_vma) 1 << 31) |
6602 | < (bfd_vma) 1 << 32); | |
6603 | } | |
6604 | ||
4ce794b7 | 6605 | r_type = ELF64_R_TYPE (rel->r_info); |
411e1bfb AM |
6606 | switch (r_type) |
6607 | { | |
6608 | case R_PPC64_GOT_TLSLD16: | |
6609 | case R_PPC64_GOT_TLSLD16_LO: | |
6610 | case R_PPC64_GOT_TLSLD16_HI: | |
6611 | case R_PPC64_GOT_TLSLD16_HA: | |
951fd09b AM |
6612 | /* These relocs should never be against a symbol |
6613 | defined in a shared lib. Leave them alone if | |
6614 | that turns out to be the case. */ | |
e717da7e | 6615 | ppc64_tlsld_got (ibfd)->refcount -= 1; |
951fd09b AM |
6616 | if (!is_local) |
6617 | continue; | |
6618 | ||
951fd09b AM |
6619 | /* LD -> LE */ |
6620 | tls_set = 0; | |
6621 | tls_clear = TLS_LD; | |
e7b938ca | 6622 | tls_type = TLS_TLS | TLS_LD; |
411e1bfb AM |
6623 | expecting_tls_get_addr = 1; |
6624 | break; | |
6625 | ||
6626 | case R_PPC64_GOT_TLSGD16: | |
6627 | case R_PPC64_GOT_TLSGD16_LO: | |
6628 | case R_PPC64_GOT_TLSGD16_HI: | |
6629 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b | 6630 | if (ok_tprel) |
411e1bfb AM |
6631 | /* GD -> LE */ |
6632 | tls_set = 0; | |
6633 | else | |
6634 | /* GD -> IE */ | |
951fd09b AM |
6635 | tls_set = TLS_TLS | TLS_TPRELGD; |
6636 | tls_clear = TLS_GD; | |
e7b938ca | 6637 | tls_type = TLS_TLS | TLS_GD; |
411e1bfb AM |
6638 | expecting_tls_get_addr = 1; |
6639 | break; | |
6640 | ||
6641 | case R_PPC64_GOT_TPREL16_DS: | |
6642 | case R_PPC64_GOT_TPREL16_LO_DS: | |
6643 | case R_PPC64_GOT_TPREL16_HI: | |
6644 | case R_PPC64_GOT_TPREL16_HA: | |
6645 | expecting_tls_get_addr = 0; | |
6646 | if (ok_tprel) | |
6647 | { | |
6648 | /* IE -> LE */ | |
6649 | tls_set = 0; | |
6650 | tls_clear = TLS_TPREL; | |
e7b938ca | 6651 | tls_type = TLS_TLS | TLS_TPREL; |
411e1bfb AM |
6652 | break; |
6653 | } | |
6654 | else | |
6655 | continue; | |
6656 | ||
6657 | case R_PPC64_REL14: | |
6658 | case R_PPC64_REL14_BRTAKEN: | |
6659 | case R_PPC64_REL14_BRNTAKEN: | |
6660 | case R_PPC64_REL24: | |
6661 | if (h != NULL | |
8387904d AM |
6662 | && (h == &htab->tls_get_addr->elf |
6663 | || h == &htab->tls_get_addr_fd->elf)) | |
411e1bfb AM |
6664 | { |
6665 | if (!expecting_tls_get_addr | |
6666 | && rel != relstart | |
6667 | && ((ELF64_R_TYPE (rel[-1].r_info) | |
6668 | == R_PPC64_TOC16) | |
6669 | || (ELF64_R_TYPE (rel[-1].r_info) | |
6670 | == R_PPC64_TOC16_LO))) | |
6671 | { | |
6672 | /* Check for toc tls entries. */ | |
6673 | char *toc_tls; | |
951fd09b | 6674 | int retval; |
411e1bfb | 6675 | |
0d4792f7 | 6676 | retval = get_tls_mask (&toc_tls, NULL, &locsyms, |
951fd09b AM |
6677 | rel - 1, ibfd); |
6678 | if (retval == 0) | |
411e1bfb AM |
6679 | goto err_free_rel; |
6680 | if (toc_tls != NULL) | |
951fd09b | 6681 | expecting_tls_get_addr = retval > 1; |
411e1bfb AM |
6682 | } |
6683 | ||
6684 | if (expecting_tls_get_addr) | |
6685 | { | |
6686 | struct plt_entry *ent; | |
6687 | for (ent = h->plt.plist; ent; ent = ent->next) | |
6688 | if (ent->addend == 0) | |
6689 | { | |
6690 | if (ent->plt.refcount > 0) | |
6691 | ent->plt.refcount -= 1; | |
6692 | break; | |
6693 | } | |
6694 | } | |
6695 | } | |
6696 | expecting_tls_get_addr = 0; | |
6697 | continue; | |
6698 | ||
6699 | case R_PPC64_TPREL64: | |
6700 | expecting_tls_get_addr = 0; | |
6701 | if (ok_tprel) | |
6702 | { | |
6703 | /* IE -> LE */ | |
6704 | tls_set = TLS_EXPLICIT; | |
6705 | tls_clear = TLS_TPREL; | |
6706 | break; | |
6707 | } | |
6708 | else | |
6709 | continue; | |
6710 | ||
6711 | case R_PPC64_DTPMOD64: | |
6712 | expecting_tls_get_addr = 0; | |
951fd09b AM |
6713 | if (rel + 1 < relend |
6714 | && (rel[1].r_info | |
6715 | == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)) | |
6716 | && rel[1].r_offset == rel->r_offset + 8) | |
411e1bfb | 6717 | { |
951fd09b | 6718 | if (ok_tprel) |
411e1bfb | 6719 | /* GD -> LE */ |
951fd09b | 6720 | tls_set = TLS_EXPLICIT | TLS_GD; |
411e1bfb AM |
6721 | else |
6722 | /* GD -> IE */ | |
951fd09b AM |
6723 | tls_set = TLS_EXPLICIT | TLS_GD | TLS_TPRELGD; |
6724 | tls_clear = TLS_GD; | |
411e1bfb AM |
6725 | } |
6726 | else | |
6727 | { | |
951fd09b AM |
6728 | if (!is_local) |
6729 | continue; | |
6730 | ||
6731 | /* LD -> LE */ | |
6732 | tls_set = TLS_EXPLICIT; | |
6733 | tls_clear = TLS_LD; | |
411e1bfb AM |
6734 | } |
6735 | break; | |
6736 | ||
6737 | default: | |
6738 | expecting_tls_get_addr = 0; | |
6739 | continue; | |
6740 | } | |
6741 | ||
6742 | if ((tls_set & TLS_EXPLICIT) == 0) | |
6743 | { | |
6744 | struct got_entry *ent; | |
6745 | ||
6746 | /* Adjust got entry for this reloc. */ | |
6747 | if (h != NULL) | |
6748 | ent = h->got.glist; | |
6749 | else | |
6750 | ent = elf_local_got_ents (ibfd)[r_symndx]; | |
6751 | ||
6752 | for (; ent != NULL; ent = ent->next) | |
6753 | if (ent->addend == rel->r_addend | |
e717da7e | 6754 | && ent->owner == ibfd |
e7b938ca | 6755 | && ent->tls_type == tls_type) |
411e1bfb AM |
6756 | break; |
6757 | if (ent == NULL) | |
6758 | abort (); | |
6759 | ||
6760 | if (tls_set == 0) | |
6761 | { | |
6762 | /* We managed to get rid of a got entry. */ | |
6763 | if (ent->got.refcount > 0) | |
6764 | ent->got.refcount -= 1; | |
6765 | } | |
411e1bfb | 6766 | } |
8c1d1bb8 | 6767 | else |
411e1bfb | 6768 | { |
8c1d1bb8 AM |
6769 | /* If we got rid of a DTPMOD/DTPREL reloc pair then |
6770 | we'll lose one or two dyn relocs. */ | |
6771 | if (!dec_dynrel_count (rel->r_info, sec, info, | |
6772 | NULL, h, sym_sec)) | |
6773 | return FALSE; | |
6774 | ||
6775 | if (tls_set == (TLS_EXPLICIT | TLS_GD)) | |
6776 | { | |
6777 | if (!dec_dynrel_count ((rel + 1)->r_info, sec, info, | |
6778 | NULL, h, sym_sec)) | |
6779 | return FALSE; | |
6780 | } | |
411e1bfb AM |
6781 | } |
6782 | ||
e7b938ca AM |
6783 | *tls_mask |= tls_set; |
6784 | *tls_mask &= ~tls_clear; | |
411e1bfb AM |
6785 | } |
6786 | ||
6787 | if (elf_section_data (sec)->relocs != relstart) | |
6788 | free (relstart); | |
6789 | } | |
6790 | ||
6791 | if (locsyms != NULL | |
6792 | && (elf_tdata (ibfd)->symtab_hdr.contents | |
6793 | != (unsigned char *) locsyms)) | |
6cdc0ccc AM |
6794 | { |
6795 | if (!info->keep_memory) | |
411e1bfb | 6796 | free (locsyms); |
6cdc0ccc | 6797 | else |
411e1bfb | 6798 | elf_tdata (ibfd)->symtab_hdr.contents = (unsigned char *) locsyms; |
6cdc0ccc | 6799 | } |
1e2f5b6e | 6800 | } |
b34976b6 | 6801 | return TRUE; |
1e2f5b6e | 6802 | } |
b34976b6 | 6803 | |
c5614fa4 AM |
6804 | /* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust |
6805 | the values of any global symbols in a toc section that has been | |
6806 | edited. Globals in toc sections should be a rarity, so this function | |
6807 | sets a flag if any are found in toc sections other than the one just | |
6808 | edited, so that futher hash table traversals can be avoided. */ | |
6809 | ||
6810 | struct adjust_toc_info | |
6811 | { | |
6812 | asection *toc; | |
6813 | unsigned long *skip; | |
6814 | bfd_boolean global_toc_syms; | |
6815 | }; | |
6816 | ||
6817 | static bfd_boolean | |
6818 | adjust_toc_syms (struct elf_link_hash_entry *h, void *inf) | |
6819 | { | |
6820 | struct ppc_link_hash_entry *eh; | |
6821 | struct adjust_toc_info *toc_inf = (struct adjust_toc_info *) inf; | |
6822 | ||
6823 | if (h->root.type == bfd_link_hash_indirect) | |
6824 | return TRUE; | |
6825 | ||
6826 | if (h->root.type == bfd_link_hash_warning) | |
6827 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
6828 | ||
6829 | if (h->root.type != bfd_link_hash_defined | |
6830 | && h->root.type != bfd_link_hash_defweak) | |
6831 | return TRUE; | |
6832 | ||
6833 | eh = (struct ppc_link_hash_entry *) h; | |
6834 | if (eh->adjust_done) | |
6835 | return TRUE; | |
6836 | ||
6837 | if (eh->elf.root.u.def.section == toc_inf->toc) | |
6838 | { | |
6839 | unsigned long skip = toc_inf->skip[eh->elf.root.u.def.value >> 3]; | |
6840 | if (skip != (unsigned long) -1) | |
6841 | eh->elf.root.u.def.value -= skip; | |
6842 | else | |
6843 | { | |
6844 | (*_bfd_error_handler) | |
6845 | (_("%s defined in removed toc entry"), eh->elf.root.root.string); | |
6846 | eh->elf.root.u.def.section = &bfd_abs_section; | |
6847 | eh->elf.root.u.def.value = 0; | |
6848 | } | |
6849 | eh->adjust_done = 1; | |
6850 | } | |
6851 | else if (strcmp (eh->elf.root.u.def.section->name, ".toc") == 0) | |
6852 | toc_inf->global_toc_syms = TRUE; | |
6853 | ||
6854 | return TRUE; | |
6855 | } | |
6856 | ||
6857 | /* Examine all relocs referencing .toc sections in order to remove | |
6858 | unused .toc entries. */ | |
6859 | ||
6860 | bfd_boolean | |
6861 | ppc64_elf_edit_toc (bfd *obfd ATTRIBUTE_UNUSED, struct bfd_link_info *info) | |
6862 | { | |
6863 | bfd *ibfd; | |
6864 | struct adjust_toc_info toc_inf; | |
6865 | ||
6866 | toc_inf.global_toc_syms = TRUE; | |
6867 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
6868 | { | |
6869 | asection *toc, *sec; | |
6870 | Elf_Internal_Shdr *symtab_hdr; | |
6871 | Elf_Internal_Sym *local_syms; | |
6872 | struct elf_link_hash_entry **sym_hashes; | |
92b7a70f | 6873 | Elf_Internal_Rela *relstart, *rel; |
c5614fa4 AM |
6874 | unsigned long *skip, *drop; |
6875 | unsigned char *used; | |
6876 | unsigned char *keep, last, some_unused; | |
6877 | ||
6878 | toc = bfd_get_section_by_name (ibfd, ".toc"); | |
6879 | if (toc == NULL | |
92b7a70f | 6880 | || toc->size == 0 |
c5614fa4 AM |
6881 | || toc->sec_info_type == ELF_INFO_TYPE_JUST_SYMS |
6882 | || elf_discarded_section (toc)) | |
6883 | continue; | |
6884 | ||
6885 | local_syms = NULL; | |
6886 | symtab_hdr = &elf_tdata (ibfd)->symtab_hdr; | |
6887 | sym_hashes = elf_sym_hashes (ibfd); | |
6888 | ||
6889 | /* Look at sections dropped from the final link. */ | |
6890 | skip = NULL; | |
6891 | relstart = NULL; | |
6892 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
6893 | { | |
6894 | if (sec->reloc_count == 0 | |
6895 | || !elf_discarded_section (sec) | |
6896 | || get_opd_info (sec) | |
6897 | || (sec->flags & SEC_ALLOC) == 0 | |
6898 | || (sec->flags & SEC_DEBUGGING) != 0) | |
6899 | continue; | |
6900 | ||
6901 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, FALSE); | |
6902 | if (relstart == NULL) | |
6903 | goto error_ret; | |
6904 | ||
6905 | /* Run through the relocs to see which toc entries might be | |
6906 | unused. */ | |
6907 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
6908 | { | |
6909 | enum elf_ppc64_reloc_type r_type; | |
6910 | unsigned long r_symndx; | |
6911 | asection *sym_sec; | |
6912 | struct elf_link_hash_entry *h; | |
6913 | Elf_Internal_Sym *sym; | |
6914 | bfd_vma val; | |
6915 | ||
6916 | r_type = ELF64_R_TYPE (rel->r_info); | |
6917 | switch (r_type) | |
6918 | { | |
6919 | default: | |
6920 | continue; | |
6921 | ||
6922 | case R_PPC64_TOC16: | |
6923 | case R_PPC64_TOC16_LO: | |
6924 | case R_PPC64_TOC16_HI: | |
6925 | case R_PPC64_TOC16_HA: | |
6926 | case R_PPC64_TOC16_DS: | |
6927 | case R_PPC64_TOC16_LO_DS: | |
6928 | break; | |
6929 | } | |
6930 | ||
6931 | r_symndx = ELF64_R_SYM (rel->r_info); | |
6932 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
6933 | r_symndx, ibfd)) | |
6934 | goto error_ret; | |
6935 | ||
6936 | if (sym_sec != toc) | |
6937 | continue; | |
6938 | ||
6939 | if (h != NULL) | |
6940 | val = h->root.u.def.value; | |
6941 | else | |
6942 | val = sym->st_value; | |
6943 | val += rel->r_addend; | |
6944 | ||
6945 | if (val >= toc->size) | |
6946 | continue; | |
6947 | ||
6948 | /* Anything in the toc ought to be aligned to 8 bytes. | |
6949 | If not, don't mark as unused. */ | |
6950 | if (val & 7) | |
6951 | continue; | |
6952 | ||
6953 | if (skip == NULL) | |
6954 | { | |
6955 | skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 7) / 8); | |
6956 | if (skip == NULL) | |
6957 | goto error_ret; | |
6958 | } | |
6959 | ||
6960 | skip[val >> 3] = 1; | |
6961 | } | |
6962 | ||
6963 | if (elf_section_data (sec)->relocs != relstart) | |
6964 | free (relstart); | |
6965 | } | |
6966 | ||
6967 | if (skip == NULL) | |
6968 | continue; | |
6969 | ||
6970 | used = bfd_zmalloc (sizeof (*used) * (toc->size + 7) / 8); | |
6971 | if (used == NULL) | |
6972 | { | |
6973 | error_ret: | |
6974 | if (local_syms != NULL | |
6975 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
6976 | free (local_syms); | |
6977 | if (sec != NULL | |
6978 | && relstart != NULL | |
6979 | && elf_section_data (sec)->relocs != relstart) | |
6980 | free (relstart); | |
6981 | if (skip != NULL) | |
6982 | free (skip); | |
6983 | return FALSE; | |
6984 | } | |
6985 | ||
6986 | /* Now check all kept sections that might reference the toc. */ | |
6987 | for (sec = ibfd->sections; | |
6988 | sec != NULL; | |
6989 | /* Check the toc itself last. */ | |
6990 | sec = (sec == toc ? NULL | |
6991 | : sec->next == toc && sec->next->next ? sec->next->next | |
6992 | : sec->next == NULL ? toc | |
6993 | : sec->next)) | |
6994 | { | |
6995 | int repeat; | |
6996 | ||
6997 | if (sec->reloc_count == 0 | |
6998 | || elf_discarded_section (sec) | |
6999 | || get_opd_info (sec) | |
7000 | || (sec->flags & SEC_ALLOC) == 0 | |
7001 | || (sec->flags & SEC_DEBUGGING) != 0) | |
7002 | continue; | |
7003 | ||
7004 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, TRUE); | |
7005 | if (relstart == NULL) | |
7006 | goto error_ret; | |
7007 | ||
7008 | /* Mark toc entries referenced as used. */ | |
7009 | repeat = 0; | |
7010 | do | |
7011 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
7012 | { | |
7013 | enum elf_ppc64_reloc_type r_type; | |
7014 | unsigned long r_symndx; | |
7015 | asection *sym_sec; | |
7016 | struct elf_link_hash_entry *h; | |
7017 | Elf_Internal_Sym *sym; | |
7018 | bfd_vma val; | |
7019 | ||
7020 | r_type = ELF64_R_TYPE (rel->r_info); | |
7021 | switch (r_type) | |
7022 | { | |
7023 | case R_PPC64_TOC16: | |
7024 | case R_PPC64_TOC16_LO: | |
7025 | case R_PPC64_TOC16_HI: | |
7026 | case R_PPC64_TOC16_HA: | |
7027 | case R_PPC64_TOC16_DS: | |
7028 | case R_PPC64_TOC16_LO_DS: | |
7029 | /* In case we're taking addresses of toc entries. */ | |
7030 | case R_PPC64_ADDR64: | |
7031 | break; | |
7032 | ||
7033 | default: | |
7034 | continue; | |
7035 | } | |
7036 | ||
7037 | r_symndx = ELF64_R_SYM (rel->r_info); | |
7038 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
7039 | r_symndx, ibfd)) | |
7040 | { | |
7041 | free (used); | |
7042 | goto error_ret; | |
7043 | } | |
7044 | ||
7045 | if (sym_sec != toc) | |
7046 | continue; | |
7047 | ||
7048 | if (h != NULL) | |
7049 | val = h->root.u.def.value; | |
7050 | else | |
7051 | val = sym->st_value; | |
7052 | val += rel->r_addend; | |
7053 | ||
7054 | if (val >= toc->size) | |
7055 | continue; | |
7056 | ||
7057 | /* For the toc section, we only mark as used if | |
7058 | this entry itself isn't unused. */ | |
7059 | if (sec == toc | |
7060 | && !used[val >> 3] | |
7061 | && (used[rel->r_offset >> 3] | |
7062 | || !skip[rel->r_offset >> 3])) | |
7063 | /* Do all the relocs again, to catch reference | |
7064 | chains. */ | |
7065 | repeat = 1; | |
7066 | ||
7067 | used[val >> 3] = 1; | |
7068 | } | |
7069 | while (repeat); | |
7070 | } | |
7071 | ||
7072 | /* Merge the used and skip arrays. Assume that TOC | |
7073 | doublewords not appearing as either used or unused belong | |
7074 | to to an entry more than one doubleword in size. */ | |
7075 | for (drop = skip, keep = used, last = 0, some_unused = 0; | |
7076 | drop < skip + (toc->size + 7) / 8; | |
7077 | ++drop, ++keep) | |
7078 | { | |
7079 | if (*keep) | |
7080 | { | |
7081 | *drop = 0; | |
7082 | last = 0; | |
7083 | } | |
7084 | else if (*drop) | |
7085 | { | |
7086 | some_unused = 1; | |
7087 | last = 1; | |
7088 | } | |
7089 | else | |
7090 | *drop = last; | |
7091 | } | |
7092 | ||
7093 | free (used); | |
7094 | ||
7095 | if (some_unused) | |
7096 | { | |
7097 | bfd_byte *contents, *src; | |
7098 | unsigned long off; | |
7099 | ||
7100 | /* Shuffle the toc contents, and at the same time convert the | |
7101 | skip array from booleans into offsets. */ | |
7102 | if (!bfd_malloc_and_get_section (ibfd, toc, &contents)) | |
7103 | goto error_ret; | |
7104 | ||
7105 | elf_section_data (toc)->this_hdr.contents = contents; | |
7106 | ||
7107 | for (src = contents, off = 0, drop = skip; | |
7108 | src < contents + toc->size; | |
7109 | src += 8, ++drop) | |
7110 | { | |
7111 | if (*drop) | |
7112 | { | |
7113 | *drop = (unsigned long) -1; | |
7114 | off += 8; | |
7115 | } | |
7116 | else if (off != 0) | |
7117 | { | |
7118 | *drop = off; | |
7119 | memcpy (src - off, src, 8); | |
7120 | } | |
7121 | } | |
7122 | toc->rawsize = toc->size; | |
7123 | toc->size = src - contents - off; | |
7124 | ||
92b7a70f AM |
7125 | if (toc->reloc_count != 0) |
7126 | { | |
7127 | Elf_Internal_Rela *wrel; | |
7128 | bfd_size_type sz; | |
c5614fa4 | 7129 | |
92b7a70f AM |
7130 | /* Read toc relocs. */ |
7131 | relstart = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL, | |
7132 | TRUE); | |
7133 | if (relstart == NULL) | |
7134 | goto error_ret; | |
7135 | ||
7136 | /* Remove unused toc relocs, and adjust those we keep. */ | |
7137 | wrel = relstart; | |
7138 | for (rel = relstart; rel < relstart + toc->reloc_count; ++rel) | |
7139 | if (skip[rel->r_offset >> 3] != (unsigned long) -1) | |
7140 | { | |
7141 | wrel->r_offset = rel->r_offset - skip[rel->r_offset >> 3]; | |
7142 | wrel->r_info = rel->r_info; | |
7143 | wrel->r_addend = rel->r_addend; | |
7144 | ++wrel; | |
7145 | } | |
8c1d1bb8 AM |
7146 | else if (!dec_dynrel_count (rel->r_info, toc, info, |
7147 | &local_syms, NULL, NULL)) | |
7148 | goto error_ret; | |
35090471 | 7149 | |
92b7a70f AM |
7150 | toc->reloc_count = wrel - relstart; |
7151 | sz = elf_section_data (toc)->rel_hdr.sh_entsize; | |
7152 | elf_section_data (toc)->rel_hdr.sh_size = toc->reloc_count * sz; | |
7153 | BFD_ASSERT (elf_section_data (toc)->rel_hdr2 == NULL); | |
7154 | } | |
c5614fa4 AM |
7155 | |
7156 | /* Adjust addends for relocs against the toc section sym. */ | |
7157 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
7158 | { | |
7159 | if (sec->reloc_count == 0 | |
7160 | || elf_discarded_section (sec)) | |
7161 | continue; | |
7162 | ||
7163 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, | |
7164 | TRUE); | |
7165 | if (relstart == NULL) | |
7166 | goto error_ret; | |
7167 | ||
7168 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
7169 | { | |
7170 | enum elf_ppc64_reloc_type r_type; | |
7171 | unsigned long r_symndx; | |
7172 | asection *sym_sec; | |
7173 | struct elf_link_hash_entry *h; | |
7174 | Elf_Internal_Sym *sym; | |
7175 | ||
7176 | r_type = ELF64_R_TYPE (rel->r_info); | |
7177 | switch (r_type) | |
7178 | { | |
7179 | default: | |
7180 | continue; | |
7181 | ||
7182 | case R_PPC64_TOC16: | |
7183 | case R_PPC64_TOC16_LO: | |
7184 | case R_PPC64_TOC16_HI: | |
7185 | case R_PPC64_TOC16_HA: | |
7186 | case R_PPC64_TOC16_DS: | |
7187 | case R_PPC64_TOC16_LO_DS: | |
7188 | case R_PPC64_ADDR64: | |
7189 | break; | |
7190 | } | |
7191 | ||
7192 | r_symndx = ELF64_R_SYM (rel->r_info); | |
7193 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
7194 | r_symndx, ibfd)) | |
7195 | goto error_ret; | |
7196 | ||
7197 | if (sym_sec != toc || h != NULL || sym->st_value != 0) | |
7198 | continue; | |
7199 | ||
7200 | rel->r_addend -= skip[rel->r_addend >> 3]; | |
7201 | } | |
7202 | } | |
7203 | ||
7204 | /* We shouldn't have local or global symbols defined in the TOC, | |
7205 | but handle them anyway. */ | |
7206 | if (local_syms != NULL) | |
7207 | { | |
7208 | Elf_Internal_Sym *sym; | |
7209 | ||
7210 | for (sym = local_syms; | |
7211 | sym < local_syms + symtab_hdr->sh_info; | |
7212 | ++sym) | |
7213 | if (sym->st_shndx != SHN_UNDEF | |
7214 | && (sym->st_shndx < SHN_LORESERVE | |
7215 | || sym->st_shndx > SHN_HIRESERVE) | |
7216 | && sym->st_value != 0 | |
7217 | && bfd_section_from_elf_index (ibfd, sym->st_shndx) == toc) | |
7218 | { | |
7219 | if (skip[sym->st_value >> 3] != (unsigned long) -1) | |
7220 | sym->st_value -= skip[sym->st_value >> 3]; | |
7221 | else | |
7222 | { | |
7223 | (*_bfd_error_handler) | |
7224 | (_("%s defined in removed toc entry"), | |
26c61ae5 L |
7225 | bfd_elf_sym_name (ibfd, symtab_hdr, sym, |
7226 | NULL)); | |
c5614fa4 AM |
7227 | sym->st_value = 0; |
7228 | sym->st_shndx = SHN_ABS; | |
7229 | } | |
7230 | symtab_hdr->contents = (unsigned char *) local_syms; | |
7231 | } | |
7232 | } | |
7233 | ||
7234 | /* Finally, adjust any global syms defined in the toc. */ | |
7235 | if (toc_inf.global_toc_syms) | |
7236 | { | |
7237 | toc_inf.toc = toc; | |
7238 | toc_inf.skip = skip; | |
7239 | toc_inf.global_toc_syms = FALSE; | |
7240 | elf_link_hash_traverse (elf_hash_table (info), adjust_toc_syms, | |
7241 | &toc_inf); | |
7242 | } | |
7243 | } | |
7244 | ||
7245 | if (local_syms != NULL | |
7246 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
7247 | { | |
7248 | if (!info->keep_memory) | |
7249 | free (local_syms); | |
7250 | else | |
7251 | symtab_hdr->contents = (unsigned char *) local_syms; | |
7252 | } | |
7253 | free (skip); | |
7254 | } | |
7255 | ||
7256 | return TRUE; | |
7257 | } | |
7258 | ||
65f38f15 AM |
7259 | /* Allocate space in .plt, .got and associated reloc sections for |
7260 | dynamic relocs. */ | |
5bd4f169 | 7261 | |
b34976b6 | 7262 | static bfd_boolean |
4ce794b7 | 7263 | allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf) |
5bd4f169 | 7264 | { |
65f38f15 AM |
7265 | struct bfd_link_info *info; |
7266 | struct ppc_link_hash_table *htab; | |
5bd4f169 | 7267 | asection *s; |
65f38f15 AM |
7268 | struct ppc_link_hash_entry *eh; |
7269 | struct ppc_dyn_relocs *p; | |
411e1bfb | 7270 | struct got_entry *gent; |
5bd4f169 | 7271 | |
e92d460e | 7272 | if (h->root.type == bfd_link_hash_indirect) |
b34976b6 | 7273 | return TRUE; |
5bd4f169 | 7274 | |
e92d460e AM |
7275 | if (h->root.type == bfd_link_hash_warning) |
7276 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
7277 | ||
65f38f15 AM |
7278 | info = (struct bfd_link_info *) inf; |
7279 | htab = ppc_hash_table (info); | |
5bd4f169 | 7280 | |
65f38f15 | 7281 | if (htab->elf.dynamic_sections_created |
411e1bfb | 7282 | && h->dynindx != -1 |
9c7a29a3 | 7283 | && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h)) |
5bd4f169 | 7284 | { |
411e1bfb AM |
7285 | struct plt_entry *pent; |
7286 | bfd_boolean doneone = FALSE; | |
7287 | for (pent = h->plt.plist; pent != NULL; pent = pent->next) | |
7288 | if (pent->plt.refcount > 0) | |
7289 | { | |
411e1bfb AM |
7290 | /* If this is the first .plt entry, make room for the special |
7291 | first entry. */ | |
4ce794b7 | 7292 | s = htab->plt; |
eea6121a AM |
7293 | if (s->size == 0) |
7294 | s->size += PLT_INITIAL_ENTRY_SIZE; | |
411e1bfb | 7295 | |
eea6121a | 7296 | pent->plt.offset = s->size; |
411e1bfb AM |
7297 | |
7298 | /* Make room for this entry. */ | |
eea6121a | 7299 | s->size += PLT_ENTRY_SIZE; |
411e1bfb AM |
7300 | |
7301 | /* Make room for the .glink code. */ | |
4ce794b7 | 7302 | s = htab->glink; |
eea6121a AM |
7303 | if (s->size == 0) |
7304 | s->size += GLINK_CALL_STUB_SIZE; | |
411e1bfb | 7305 | /* We need bigger stubs past index 32767. */ |
eea6121a AM |
7306 | if (s->size >= GLINK_CALL_STUB_SIZE + 32768*2*4) |
7307 | s->size += 4; | |
7308 | s->size += 2*4; | |
411e1bfb AM |
7309 | |
7310 | /* We also need to make an entry in the .rela.plt section. */ | |
4ce794b7 | 7311 | s = htab->relplt; |
eea6121a | 7312 | s->size += sizeof (Elf64_External_Rela); |
411e1bfb AM |
7313 | doneone = TRUE; |
7314 | } | |
7315 | else | |
7316 | pent->plt.offset = (bfd_vma) -1; | |
7317 | if (!doneone) | |
65f38f15 | 7318 | { |
411e1bfb | 7319 | h->plt.plist = NULL; |
f5385ebf | 7320 | h->needs_plt = 0; |
65f38f15 AM |
7321 | } |
7322 | } | |
7323 | else | |
7324 | { | |
411e1bfb | 7325 | h->plt.plist = NULL; |
f5385ebf | 7326 | h->needs_plt = 0; |
65f38f15 AM |
7327 | } |
7328 | ||
951fd09b AM |
7329 | eh = (struct ppc_link_hash_entry *) h; |
7330 | /* Run through the TLS GD got entries first if we're changing them | |
7331 | to TPREL. */ | |
e7b938ca | 7332 | if ((eh->tls_mask & TLS_TPRELGD) != 0) |
951fd09b AM |
7333 | for (gent = h->got.glist; gent != NULL; gent = gent->next) |
7334 | if (gent->got.refcount > 0 | |
7335 | && (gent->tls_type & TLS_GD) != 0) | |
7336 | { | |
7337 | /* This was a GD entry that has been converted to TPREL. If | |
7338 | there happens to be a TPREL entry we can use that one. */ | |
7339 | struct got_entry *ent; | |
7340 | for (ent = h->got.glist; ent != NULL; ent = ent->next) | |
7341 | if (ent->got.refcount > 0 | |
7342 | && (ent->tls_type & TLS_TPREL) != 0 | |
e717da7e AM |
7343 | && ent->addend == gent->addend |
7344 | && ent->owner == gent->owner) | |
951fd09b AM |
7345 | { |
7346 | gent->got.refcount = 0; | |
7347 | break; | |
7348 | } | |
7349 | ||
7350 | /* If not, then we'll be using our own TPREL entry. */ | |
7351 | if (gent->got.refcount != 0) | |
7352 | gent->tls_type = TLS_TLS | TLS_TPREL; | |
7353 | } | |
7354 | ||
411e1bfb AM |
7355 | for (gent = h->got.glist; gent != NULL; gent = gent->next) |
7356 | if (gent->got.refcount > 0) | |
7357 | { | |
951fd09b AM |
7358 | bfd_boolean dyn; |
7359 | ||
411e1bfb | 7360 | /* Make sure this symbol is output as a dynamic symbol. |
951fd09b AM |
7361 | Undefined weak syms won't yet be marked as dynamic, |
7362 | nor will all TLS symbols. */ | |
411e1bfb | 7363 | if (h->dynindx == -1 |
f5385ebf | 7364 | && !h->forced_local) |
411e1bfb | 7365 | { |
c152c796 | 7366 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
411e1bfb AM |
7367 | return FALSE; |
7368 | } | |
65f38f15 | 7369 | |
d881513a | 7370 | if ((gent->tls_type & TLS_LD) != 0 |
f5385ebf | 7371 | && !h->def_dynamic) |
411e1bfb | 7372 | { |
e717da7e | 7373 | gent->got.offset = ppc64_tlsld_got (gent->owner)->offset; |
951fd09b | 7374 | continue; |
411e1bfb | 7375 | } |
951fd09b | 7376 | |
e717da7e | 7377 | s = ppc64_elf_tdata (gent->owner)->got; |
eea6121a AM |
7378 | gent->got.offset = s->size; |
7379 | s->size | |
d881513a | 7380 | += (gent->tls_type & eh->tls_mask & (TLS_GD | TLS_LD)) ? 16 : 8; |
951fd09b | 7381 | dyn = htab->elf.dynamic_sections_created; |
4e795f50 AM |
7382 | if ((info->shared |
7383 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)) | |
7384 | && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
7385 | || h->root.type != bfd_link_hash_undefweak)) | |
eea6121a | 7386 | ppc64_elf_tdata (gent->owner)->relgot->size |
e7b938ca | 7387 | += (gent->tls_type & eh->tls_mask & TLS_GD |
951fd09b AM |
7388 | ? 2 * sizeof (Elf64_External_Rela) |
7389 | : sizeof (Elf64_External_Rela)); | |
411e1bfb AM |
7390 | } |
7391 | else | |
7392 | gent->got.offset = (bfd_vma) -1; | |
65f38f15 | 7393 | |
65f38f15 | 7394 | if (eh->dyn_relocs == NULL) |
b34976b6 | 7395 | return TRUE; |
65f38f15 AM |
7396 | |
7397 | /* In the shared -Bsymbolic case, discard space allocated for | |
7398 | dynamic pc-relative relocs against symbols which turn out to be | |
7399 | defined in regular objects. For the normal shared case, discard | |
7400 | space for relocs that have become local due to symbol visibility | |
7401 | changes. */ | |
7402 | ||
7403 | if (info->shared) | |
7404 | { | |
9c7a29a3 AM |
7405 | /* Relocs that use pc_count are those that appear on a call insn, |
7406 | or certain REL relocs (see MUST_BE_DYN_RELOC) that can be | |
7407 | generated via assembly. We want calls to protected symbols to | |
7408 | resolve directly to the function rather than going via the plt. | |
7409 | If people want function pointer comparisons to work as expected | |
7410 | then they should avoid writing weird assembly. */ | |
09695f56 | 7411 | if (SYMBOL_CALLS_LOCAL (info, h)) |
65f38f15 AM |
7412 | { |
7413 | struct ppc_dyn_relocs **pp; | |
7414 | ||
7415 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) | |
5bd4f169 | 7416 | { |
65f38f15 AM |
7417 | p->count -= p->pc_count; |
7418 | p->pc_count = 0; | |
7419 | if (p->count == 0) | |
7420 | *pp = p->next; | |
7421 | else | |
7422 | pp = &p->next; | |
5bd4f169 | 7423 | } |
65f38f15 | 7424 | } |
4e795f50 AM |
7425 | |
7426 | /* Also discard relocs on undefined weak syms with non-default | |
7427 | visibility. */ | |
7428 | if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
7429 | && h->root.type == bfd_link_hash_undefweak) | |
7430 | eh->dyn_relocs = NULL; | |
65f38f15 | 7431 | } |
f4656909 | 7432 | else if (ELIMINATE_COPY_RELOCS) |
65f38f15 AM |
7433 | { |
7434 | /* For the non-shared case, discard space for relocs against | |
7435 | symbols which turn out to need copy relocs or are not | |
7436 | dynamic. */ | |
7437 | ||
f5385ebf AM |
7438 | if (!h->non_got_ref |
7439 | && h->def_dynamic | |
7440 | && !h->def_regular) | |
65f38f15 AM |
7441 | { |
7442 | /* Make sure this symbol is output as a dynamic symbol. | |
7443 | Undefined weak syms won't yet be marked as dynamic. */ | |
7444 | if (h->dynindx == -1 | |
f5385ebf | 7445 | && !h->forced_local) |
65f38f15 | 7446 | { |
c152c796 | 7447 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 7448 | return FALSE; |
65f38f15 AM |
7449 | } |
7450 | ||
7451 | /* If that succeeded, we know we'll be keeping all the | |
7452 | relocs. */ | |
7453 | if (h->dynindx != -1) | |
7454 | goto keep; | |
7455 | } | |
7456 | ||
7457 | eh->dyn_relocs = NULL; | |
7458 | ||
ec338859 | 7459 | keep: ; |
65f38f15 AM |
7460 | } |
7461 | ||
7462 | /* Finally, allocate space. */ | |
7463 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
7464 | { | |
7465 | asection *sreloc = elf_section_data (p->sec)->sreloc; | |
eea6121a | 7466 | sreloc->size += p->count * sizeof (Elf64_External_Rela); |
65f38f15 AM |
7467 | } |
7468 | ||
b34976b6 | 7469 | return TRUE; |
65f38f15 AM |
7470 | } |
7471 | ||
7472 | /* Find any dynamic relocs that apply to read-only sections. */ | |
7473 | ||
b34976b6 | 7474 | static bfd_boolean |
4ce794b7 | 7475 | readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf) |
65f38f15 AM |
7476 | { |
7477 | struct ppc_link_hash_entry *eh; | |
7478 | struct ppc_dyn_relocs *p; | |
7479 | ||
e92d460e AM |
7480 | if (h->root.type == bfd_link_hash_warning) |
7481 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
7482 | ||
65f38f15 AM |
7483 | eh = (struct ppc_link_hash_entry *) h; |
7484 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
7485 | { | |
7486 | asection *s = p->sec->output_section; | |
7487 | ||
7488 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
7489 | { | |
4ce794b7 | 7490 | struct bfd_link_info *info = inf; |
65f38f15 AM |
7491 | |
7492 | info->flags |= DF_TEXTREL; | |
7493 | ||
7494 | /* Not an error, just cut short the traversal. */ | |
b34976b6 | 7495 | return FALSE; |
65f38f15 AM |
7496 | } |
7497 | } | |
b34976b6 | 7498 | return TRUE; |
65f38f15 AM |
7499 | } |
7500 | ||
7501 | /* Set the sizes of the dynamic sections. */ | |
7502 | ||
b34976b6 | 7503 | static bfd_boolean |
4ce794b7 AM |
7504 | ppc64_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED, |
7505 | struct bfd_link_info *info) | |
65f38f15 AM |
7506 | { |
7507 | struct ppc_link_hash_table *htab; | |
7508 | bfd *dynobj; | |
7509 | asection *s; | |
b34976b6 | 7510 | bfd_boolean relocs; |
65f38f15 AM |
7511 | bfd *ibfd; |
7512 | ||
7513 | htab = ppc_hash_table (info); | |
7514 | dynobj = htab->elf.dynobj; | |
7515 | if (dynobj == NULL) | |
7516 | abort (); | |
7517 | ||
7518 | if (htab->elf.dynamic_sections_created) | |
7519 | { | |
7520 | /* Set the contents of the .interp section to the interpreter. */ | |
36af4a4e | 7521 | if (info->executable) |
65f38f15 AM |
7522 | { |
7523 | s = bfd_get_section_by_name (dynobj, ".interp"); | |
7524 | if (s == NULL) | |
7525 | abort (); | |
eea6121a | 7526 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; |
65f38f15 AM |
7527 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; |
7528 | } | |
7529 | } | |
7530 | ||
7531 | /* Set up .got offsets for local syms, and space for local dynamic | |
7532 | relocs. */ | |
7533 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
7534 | { | |
411e1bfb AM |
7535 | struct got_entry **lgot_ents; |
7536 | struct got_entry **end_lgot_ents; | |
e7b938ca | 7537 | char *lgot_masks; |
65f38f15 AM |
7538 | bfd_size_type locsymcount; |
7539 | Elf_Internal_Shdr *symtab_hdr; | |
7540 | asection *srel; | |
7541 | ||
ee75fd95 | 7542 | if (!is_ppc64_elf_target (ibfd->xvec)) |
65f38f15 AM |
7543 | continue; |
7544 | ||
e717da7e AM |
7545 | if (ppc64_tlsld_got (ibfd)->refcount > 0) |
7546 | { | |
7547 | s = ppc64_elf_tdata (ibfd)->got; | |
eea6121a AM |
7548 | ppc64_tlsld_got (ibfd)->offset = s->size; |
7549 | s->size += 16; | |
e717da7e AM |
7550 | if (info->shared) |
7551 | { | |
7552 | srel = ppc64_elf_tdata (ibfd)->relgot; | |
eea6121a | 7553 | srel->size += sizeof (Elf64_External_Rela); |
e717da7e AM |
7554 | } |
7555 | } | |
7556 | else | |
7557 | ppc64_tlsld_got (ibfd)->offset = (bfd_vma) -1; | |
7558 | ||
65f38f15 AM |
7559 | for (s = ibfd->sections; s != NULL; s = s->next) |
7560 | { | |
ec338859 | 7561 | struct ppc_dyn_relocs *p; |
65f38f15 | 7562 | |
ec338859 AM |
7563 | for (p = *((struct ppc_dyn_relocs **) |
7564 | &elf_section_data (s)->local_dynrel); | |
7565 | p != NULL; | |
7566 | p = p->next) | |
65f38f15 | 7567 | { |
ec338859 AM |
7568 | if (!bfd_is_abs_section (p->sec) |
7569 | && bfd_is_abs_section (p->sec->output_section)) | |
7570 | { | |
7571 | /* Input section has been discarded, either because | |
7572 | it is a copy of a linkonce section or due to | |
7573 | linker script /DISCARD/, so we'll be discarding | |
7574 | the relocs too. */ | |
7575 | } | |
248866a8 | 7576 | else if (p->count != 0) |
ec338859 AM |
7577 | { |
7578 | srel = elf_section_data (p->sec)->sreloc; | |
eea6121a | 7579 | srel->size += p->count * sizeof (Elf64_External_Rela); |
248866a8 AM |
7580 | if ((p->sec->output_section->flags & SEC_READONLY) != 0) |
7581 | info->flags |= DF_TEXTREL; | |
ec338859 | 7582 | } |
65f38f15 AM |
7583 | } |
7584 | } | |
7585 | ||
411e1bfb AM |
7586 | lgot_ents = elf_local_got_ents (ibfd); |
7587 | if (!lgot_ents) | |
65f38f15 AM |
7588 | continue; |
7589 | ||
7590 | symtab_hdr = &elf_tdata (ibfd)->symtab_hdr; | |
7591 | locsymcount = symtab_hdr->sh_info; | |
411e1bfb | 7592 | end_lgot_ents = lgot_ents + locsymcount; |
e7b938ca | 7593 | lgot_masks = (char *) end_lgot_ents; |
e717da7e AM |
7594 | s = ppc64_elf_tdata (ibfd)->got; |
7595 | srel = ppc64_elf_tdata (ibfd)->relgot; | |
e7b938ca | 7596 | for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks) |
65f38f15 | 7597 | { |
411e1bfb AM |
7598 | struct got_entry *ent; |
7599 | ||
7600 | for (ent = *lgot_ents; ent != NULL; ent = ent->next) | |
7601 | if (ent->got.refcount > 0) | |
7602 | { | |
e7b938ca | 7603 | if ((ent->tls_type & *lgot_masks & TLS_LD) != 0) |
411e1bfb | 7604 | { |
e717da7e | 7605 | if (ppc64_tlsld_got (ibfd)->offset == (bfd_vma) -1) |
411e1bfb | 7606 | { |
eea6121a AM |
7607 | ppc64_tlsld_got (ibfd)->offset = s->size; |
7608 | s->size += 16; | |
411e1bfb | 7609 | if (info->shared) |
eea6121a | 7610 | srel->size += sizeof (Elf64_External_Rela); |
411e1bfb | 7611 | } |
e717da7e | 7612 | ent->got.offset = ppc64_tlsld_got (ibfd)->offset; |
411e1bfb AM |
7613 | } |
7614 | else | |
7615 | { | |
eea6121a | 7616 | ent->got.offset = s->size; |
e7b938ca | 7617 | if ((ent->tls_type & *lgot_masks & TLS_GD) != 0) |
411e1bfb | 7618 | { |
eea6121a | 7619 | s->size += 16; |
411e1bfb | 7620 | if (info->shared) |
eea6121a | 7621 | srel->size += 2 * sizeof (Elf64_External_Rela); |
411e1bfb AM |
7622 | } |
7623 | else | |
7624 | { | |
eea6121a | 7625 | s->size += 8; |
411e1bfb | 7626 | if (info->shared) |
eea6121a | 7627 | srel->size += sizeof (Elf64_External_Rela); |
411e1bfb AM |
7628 | } |
7629 | } | |
7630 | } | |
7631 | else | |
7632 | ent->got.offset = (bfd_vma) -1; | |
65f38f15 AM |
7633 | } |
7634 | } | |
7635 | ||
7636 | /* Allocate global sym .plt and .got entries, and space for global | |
7637 | sym dynamic relocs. */ | |
4ce794b7 | 7638 | elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info); |
65f38f15 AM |
7639 | |
7640 | /* We now have determined the sizes of the various dynamic sections. | |
7641 | Allocate memory for them. */ | |
b34976b6 | 7642 | relocs = FALSE; |
65f38f15 AM |
7643 | for (s = dynobj->sections; s != NULL; s = s->next) |
7644 | { | |
7645 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
7646 | continue; | |
7647 | ||
4ce794b7 | 7648 | if (s == htab->brlt || s == htab->relbrlt) |
721956f4 AM |
7649 | /* These haven't been allocated yet; don't strip. */ |
7650 | continue; | |
e717da7e AM |
7651 | else if (s == htab->got |
7652 | || s == htab->plt | |
4ce794b7 | 7653 | || s == htab->glink) |
65f38f15 AM |
7654 | { |
7655 | /* Strip this section if we don't need it; see the | |
7656 | comment below. */ | |
5bd4f169 | 7657 | } |
65f38f15 | 7658 | else if (strncmp (bfd_get_section_name (dynobj, s), ".rela", 5) == 0) |
5bd4f169 | 7659 | { |
eea6121a | 7660 | if (s->size == 0) |
5bd4f169 AM |
7661 | { |
7662 | /* If we don't need this section, strip it from the | |
7663 | output file. This is mostly to handle .rela.bss and | |
7664 | .rela.plt. We must create both sections in | |
7665 | create_dynamic_sections, because they must be created | |
7666 | before the linker maps input sections to output | |
7667 | sections. The linker does that before | |
7668 | adjust_dynamic_symbol is called, and it is that | |
7669 | function which decides whether anything needs to go | |
7670 | into these sections. */ | |
5bd4f169 AM |
7671 | } |
7672 | else | |
7673 | { | |
4ce794b7 | 7674 | if (s != htab->relplt) |
b34976b6 | 7675 | relocs = TRUE; |
5bd4f169 AM |
7676 | |
7677 | /* We use the reloc_count field as a counter if we need | |
7678 | to copy relocs into the output file. */ | |
7679 | s->reloc_count = 0; | |
7680 | } | |
7681 | } | |
65f38f15 | 7682 | else |
5bd4f169 AM |
7683 | { |
7684 | /* It's not one of our sections, so don't allocate space. */ | |
7685 | continue; | |
7686 | } | |
7687 | ||
eea6121a | 7688 | if (s->size == 0) |
5bd4f169 | 7689 | { |
8423293d | 7690 | s->flags |= SEC_EXCLUDE; |
5bd4f169 AM |
7691 | continue; |
7692 | } | |
7693 | ||
5f333394 | 7694 | /* .plt is in the bss section. We don't initialise it. */ |
680a3378 | 7695 | if (s == htab->plt) |
5f333394 AM |
7696 | continue; |
7697 | ||
65f38f15 AM |
7698 | /* Allocate memory for the section contents. We use bfd_zalloc |
7699 | here in case unused entries are not reclaimed before the | |
7700 | section's contents are written out. This should not happen, | |
411e1bfb AM |
7701 | but this way if it does we get a R_PPC64_NONE reloc in .rela |
7702 | sections instead of garbage. | |
7703 | We also rely on the section contents being zero when writing | |
7704 | the GOT. */ | |
eea6121a | 7705 | s->contents = bfd_zalloc (dynobj, s->size); |
65f38f15 | 7706 | if (s->contents == NULL) |
b34976b6 | 7707 | return FALSE; |
5bd4f169 AM |
7708 | } |
7709 | ||
e717da7e AM |
7710 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) |
7711 | { | |
ee75fd95 | 7712 | if (!is_ppc64_elf_target (ibfd->xvec)) |
7b53ace3 AM |
7713 | continue; |
7714 | ||
e717da7e AM |
7715 | s = ppc64_elf_tdata (ibfd)->got; |
7716 | if (s != NULL && s != htab->got) | |
7717 | { | |
eea6121a | 7718 | if (s->size == 0) |
8423293d | 7719 | s->flags |= SEC_EXCLUDE; |
e717da7e AM |
7720 | else |
7721 | { | |
eea6121a | 7722 | s->contents = bfd_zalloc (ibfd, s->size); |
e717da7e AM |
7723 | if (s->contents == NULL) |
7724 | return FALSE; | |
7725 | } | |
7726 | } | |
7727 | s = ppc64_elf_tdata (ibfd)->relgot; | |
7728 | if (s != NULL) | |
7729 | { | |
eea6121a | 7730 | if (s->size == 0) |
8423293d | 7731 | s->flags |= SEC_EXCLUDE; |
e717da7e AM |
7732 | else |
7733 | { | |
eea6121a | 7734 | s->contents = bfd_zalloc (ibfd, s->size); |
e717da7e AM |
7735 | if (s->contents == NULL) |
7736 | return FALSE; | |
7737 | relocs = TRUE; | |
7738 | s->reloc_count = 0; | |
7739 | } | |
7740 | } | |
7741 | } | |
7742 | ||
e86ce104 | 7743 | if (htab->elf.dynamic_sections_created) |
5bd4f169 AM |
7744 | { |
7745 | /* Add some entries to the .dynamic section. We fill in the | |
7746 | values later, in ppc64_elf_finish_dynamic_sections, but we | |
7747 | must add the entries now so that we get the correct size for | |
7748 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
7749 | dynamic linker and used by the debugger. */ | |
dc810e39 | 7750 | #define add_dynamic_entry(TAG, VAL) \ |
5a580b3a | 7751 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) |
dc810e39 | 7752 | |
36af4a4e | 7753 | if (info->executable) |
5bd4f169 | 7754 | { |
dc810e39 | 7755 | if (!add_dynamic_entry (DT_DEBUG, 0)) |
b34976b6 | 7756 | return FALSE; |
5bd4f169 AM |
7757 | } |
7758 | ||
eea6121a | 7759 | if (htab->plt != NULL && htab->plt->size != 0) |
5bd4f169 | 7760 | { |
dc810e39 AM |
7761 | if (!add_dynamic_entry (DT_PLTGOT, 0) |
7762 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
7763 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
5d1634d7 AM |
7764 | || !add_dynamic_entry (DT_JMPREL, 0) |
7765 | || !add_dynamic_entry (DT_PPC64_GLINK, 0)) | |
b34976b6 | 7766 | return FALSE; |
5bd4f169 AM |
7767 | } |
7768 | ||
19397422 AM |
7769 | if (NO_OPD_RELOCS) |
7770 | { | |
7771 | if (!add_dynamic_entry (DT_PPC64_OPD, 0) | |
7772 | || !add_dynamic_entry (DT_PPC64_OPDSZ, 0)) | |
b34976b6 | 7773 | return FALSE; |
19397422 AM |
7774 | } |
7775 | ||
5bd4f169 AM |
7776 | if (relocs) |
7777 | { | |
dc810e39 AM |
7778 | if (!add_dynamic_entry (DT_RELA, 0) |
7779 | || !add_dynamic_entry (DT_RELASZ, 0) | |
7780 | || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela))) | |
b34976b6 | 7781 | return FALSE; |
5bd4f169 | 7782 | |
65f38f15 AM |
7783 | /* If any dynamic relocs apply to a read-only section, |
7784 | then we need a DT_TEXTREL entry. */ | |
248866a8 | 7785 | if ((info->flags & DF_TEXTREL) == 0) |
4ce794b7 | 7786 | elf_link_hash_traverse (&htab->elf, readonly_dynrelocs, info); |
5bd4f169 | 7787 | |
65f38f15 | 7788 | if ((info->flags & DF_TEXTREL) != 0) |
5bd4f169 | 7789 | { |
65f38f15 | 7790 | if (!add_dynamic_entry (DT_TEXTREL, 0)) |
b34976b6 | 7791 | return FALSE; |
5bd4f169 | 7792 | } |
5bd4f169 | 7793 | } |
5bd4f169 | 7794 | } |
65f38f15 | 7795 | #undef add_dynamic_entry |
5bd4f169 | 7796 | |
b34976b6 | 7797 | return TRUE; |
5bd4f169 AM |
7798 | } |
7799 | ||
721956f4 | 7800 | /* Determine the type of stub needed, if any, for a call. */ |
5bd4f169 | 7801 | |
4ce794b7 AM |
7802 | static inline enum ppc_stub_type |
7803 | ppc_type_of_stub (asection *input_sec, | |
7804 | const Elf_Internal_Rela *rel, | |
7805 | struct ppc_link_hash_entry **hash, | |
7806 | bfd_vma destination) | |
5bd4f169 | 7807 | { |
721956f4 AM |
7808 | struct ppc_link_hash_entry *h = *hash; |
7809 | bfd_vma location; | |
7810 | bfd_vma branch_offset; | |
7811 | bfd_vma max_branch_offset; | |
4ce794b7 | 7812 | enum elf_ppc64_reloc_type r_type; |
5bd4f169 | 7813 | |
721956f4 AM |
7814 | if (h != NULL) |
7815 | { | |
7816 | if (h->oh != NULL | |
8387904d AM |
7817 | && h->oh->is_func_descriptor) |
7818 | h = h->oh; | |
7819 | ||
7820 | if (h->elf.dynindx != -1) | |
5bd4f169 | 7821 | { |
411e1bfb | 7822 | struct plt_entry *ent; |
8387904d AM |
7823 | |
7824 | for (ent = h->elf.plt.plist; ent != NULL; ent = ent->next) | |
411e1bfb AM |
7825 | if (ent->addend == rel->r_addend |
7826 | && ent->plt.offset != (bfd_vma) -1) | |
7827 | { | |
8387904d | 7828 | *hash = h; |
411e1bfb AM |
7829 | return ppc_stub_plt_call; |
7830 | } | |
5bd4f169 AM |
7831 | } |
7832 | ||
ee7de3e6 AM |
7833 | if (!(h->elf.root.type == bfd_link_hash_defined |
7834 | || h->elf.root.type == bfd_link_hash_defweak) | |
7835 | || h->elf.root.u.def.section->output_section == NULL) | |
721956f4 | 7836 | return ppc_stub_none; |
5d1634d7 | 7837 | } |
5d1634d7 | 7838 | |
721956f4 AM |
7839 | /* Determine where the call point is. */ |
7840 | location = (input_sec->output_offset | |
7841 | + input_sec->output_section->vma | |
7842 | + rel->r_offset); | |
5d1634d7 | 7843 | |
721956f4 AM |
7844 | branch_offset = destination - location; |
7845 | r_type = ELF64_R_TYPE (rel->r_info); | |
5d1634d7 | 7846 | |
721956f4 AM |
7847 | /* Determine if a long branch stub is needed. */ |
7848 | max_branch_offset = 1 << 25; | |
4ce794b7 | 7849 | if (r_type != R_PPC64_REL24) |
721956f4 | 7850 | max_branch_offset = 1 << 15; |
5d1634d7 | 7851 | |
721956f4 AM |
7852 | if (branch_offset + max_branch_offset >= 2 * max_branch_offset) |
7853 | /* We need a stub. Figure out whether a long_branch or plt_branch | |
7854 | is needed later. */ | |
7855 | return ppc_stub_long_branch; | |
5d1634d7 | 7856 | |
721956f4 | 7857 | return ppc_stub_none; |
5d1634d7 AM |
7858 | } |
7859 | ||
7860 | /* Build a .plt call stub. */ | |
7861 | ||
4ce794b7 AM |
7862 | static inline bfd_byte * |
7863 | build_plt_stub (bfd *obfd, bfd_byte *p, int offset) | |
5d1634d7 AM |
7864 | { |
7865 | #define PPC_LO(v) ((v) & 0xffff) | |
7866 | #define PPC_HI(v) (((v) >> 16) & 0xffff) | |
7867 | #define PPC_HA(v) PPC_HI ((v) + 0x8000) | |
7868 | ||
5d1634d7 | 7869 | bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (offset), p), p += 4; |
ad8e1ba5 | 7870 | bfd_put_32 (obfd, STD_R2_40R1, p), p += 4; |
5d1634d7 AM |
7871 | bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset), p), p += 4; |
7872 | if (PPC_HA (offset + 8) != PPC_HA (offset)) | |
ad8e1ba5 | 7873 | bfd_put_32 (obfd, ADDIS_R12_R12 | 1, p), p += 4; |
5d1634d7 AM |
7874 | offset += 8; |
7875 | bfd_put_32 (obfd, LD_R2_0R12 | PPC_LO (offset), p), p += 4; | |
7876 | if (PPC_HA (offset + 8) != PPC_HA (offset)) | |
ad8e1ba5 | 7877 | bfd_put_32 (obfd, ADDIS_R12_R12 | 1, p), p += 4; |
5d1634d7 AM |
7878 | offset += 8; |
7879 | bfd_put_32 (obfd, MTCTR_R11, p), p += 4; | |
7880 | bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset), p), p += 4; | |
7881 | bfd_put_32 (obfd, BCTR, p), p += 4; | |
7882 | return p; | |
7883 | } | |
7884 | ||
b34976b6 | 7885 | static bfd_boolean |
4ce794b7 | 7886 | ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg) |
5d1634d7 | 7887 | { |
721956f4 AM |
7888 | struct ppc_stub_hash_entry *stub_entry; |
7889 | struct ppc_branch_hash_entry *br_entry; | |
5d1634d7 AM |
7890 | struct bfd_link_info *info; |
7891 | struct ppc_link_hash_table *htab; | |
721956f4 AM |
7892 | bfd_byte *loc; |
7893 | bfd_byte *p; | |
7894 | unsigned int indx; | |
411e1bfb | 7895 | struct plt_entry *ent; |
ee75fd95 | 7896 | bfd_vma dest, off; |
721956f4 | 7897 | int size; |
5d1634d7 | 7898 | |
721956f4 AM |
7899 | /* Massage our args to the form they really have. */ |
7900 | stub_entry = (struct ppc_stub_hash_entry *) gen_entry; | |
4ce794b7 | 7901 | info = in_arg; |
5d1634d7 | 7902 | |
5d1634d7 AM |
7903 | htab = ppc_hash_table (info); |
7904 | ||
721956f4 | 7905 | /* Make a note of the offset within the stubs for this entry. */ |
eea6121a | 7906 | stub_entry->stub_offset = stub_entry->stub_sec->size; |
97b639ba | 7907 | loc = stub_entry->stub_sec->contents + stub_entry->stub_offset; |
721956f4 | 7908 | |
4ce794b7 | 7909 | htab->stub_count[stub_entry->stub_type - 1] += 1; |
721956f4 | 7910 | switch (stub_entry->stub_type) |
5d1634d7 | 7911 | { |
721956f4 | 7912 | case ppc_stub_long_branch: |
ad8e1ba5 | 7913 | case ppc_stub_long_branch_r2off: |
721956f4 | 7914 | /* Branches are relative. This is where we are going to. */ |
ee75fd95 AM |
7915 | off = dest = (stub_entry->target_value |
7916 | + stub_entry->target_section->output_offset | |
7917 | + stub_entry->target_section->output_section->vma); | |
5d1634d7 | 7918 | |
721956f4 AM |
7919 | /* And this is where we are coming from. */ |
7920 | off -= (stub_entry->stub_offset | |
97b639ba AM |
7921 | + stub_entry->stub_sec->output_offset |
7922 | + stub_entry->stub_sec->output_section->vma); | |
e86ce104 | 7923 | |
ad8e1ba5 AM |
7924 | if (stub_entry->stub_type != ppc_stub_long_branch_r2off) |
7925 | size = 4; | |
7926 | else | |
7927 | { | |
7928 | bfd_vma r2off; | |
7929 | ||
7930 | r2off = (htab->stub_group[stub_entry->target_section->id].toc_off | |
7931 | - htab->stub_group[stub_entry->id_sec->id].toc_off); | |
97b639ba | 7932 | bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc); |
ad8e1ba5 | 7933 | loc += 4; |
97b639ba | 7934 | bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc); |
ad8e1ba5 | 7935 | loc += 4; |
97b639ba | 7936 | bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc); |
ad8e1ba5 AM |
7937 | loc += 4; |
7938 | off -= 12; | |
7939 | size = 16; | |
7940 | } | |
97b639ba | 7941 | bfd_put_32 (htab->stub_bfd, B_DOT | (off & 0x3fffffc), loc); |
ad8e1ba5 AM |
7942 | |
7943 | BFD_ASSERT (off + (1 << 25) < (bfd_vma) (1 << 26)); | |
ee75fd95 AM |
7944 | |
7945 | if (info->emitrelocations) | |
7946 | { | |
7947 | Elf_Internal_Rela *relocs, *r; | |
7948 | struct bfd_elf_section_data *elfsec_data; | |
7949 | ||
7950 | elfsec_data = elf_section_data (stub_entry->stub_sec); | |
7951 | relocs = elfsec_data->relocs; | |
7952 | if (relocs == NULL) | |
7953 | { | |
7954 | bfd_size_type relsize; | |
7955 | relsize = stub_entry->stub_sec->reloc_count * sizeof (*relocs); | |
7956 | relocs = bfd_alloc (htab->stub_bfd, relsize); | |
7957 | if (relocs == NULL) | |
7958 | return FALSE; | |
7959 | elfsec_data->relocs = relocs; | |
7960 | elfsec_data->rel_hdr.sh_size = relsize; | |
7961 | elfsec_data->rel_hdr.sh_entsize = 24; | |
7962 | stub_entry->stub_sec->reloc_count = 0; | |
7963 | } | |
7964 | r = relocs + stub_entry->stub_sec->reloc_count; | |
7965 | stub_entry->stub_sec->reloc_count += 1; | |
7966 | r->r_offset = loc - stub_entry->stub_sec->contents; | |
7967 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL24); | |
7968 | r->r_addend = dest; | |
7969 | if (stub_entry->h != NULL) | |
7970 | { | |
7971 | struct elf_link_hash_entry **hashes; | |
7972 | unsigned long symndx; | |
7973 | struct ppc_link_hash_entry *h; | |
7974 | ||
7975 | hashes = elf_sym_hashes (htab->stub_bfd); | |
7976 | if (hashes == NULL) | |
7977 | { | |
7978 | bfd_size_type hsize; | |
7979 | ||
7980 | hsize = (htab->stub_globals + 1) * sizeof (*hashes); | |
7981 | hashes = bfd_zalloc (htab->stub_bfd, hsize); | |
7982 | if (hashes == NULL) | |
7983 | return FALSE; | |
7984 | elf_sym_hashes (htab->stub_bfd) = hashes; | |
7985 | htab->stub_globals = 1; | |
7986 | } | |
7987 | symndx = htab->stub_globals++; | |
7988 | h = stub_entry->h; | |
7989 | hashes[symndx] = &h->elf; | |
7990 | r->r_info = ELF64_R_INFO (symndx, R_PPC64_REL24); | |
7991 | if (h->oh != NULL && h->oh->is_func) | |
7992 | h = h->oh; | |
7993 | if (h->elf.root.u.def.section != stub_entry->target_section) | |
7994 | /* H is an opd symbol. The addend must be zero. */ | |
7995 | r->r_addend = 0; | |
7996 | else | |
7997 | { | |
7998 | off = (h->elf.root.u.def.value | |
7999 | + h->elf.root.u.def.section->output_offset | |
8000 | + h->elf.root.u.def.section->output_section->vma); | |
8001 | r->r_addend -= off; | |
8002 | } | |
8003 | } | |
8004 | } | |
721956f4 | 8005 | break; |
e86ce104 | 8006 | |
721956f4 | 8007 | case ppc_stub_plt_branch: |
ad8e1ba5 | 8008 | case ppc_stub_plt_branch_r2off: |
721956f4 AM |
8009 | br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table, |
8010 | stub_entry->root.string + 9, | |
b34976b6 | 8011 | FALSE, FALSE); |
721956f4 AM |
8012 | if (br_entry == NULL) |
8013 | { | |
8014 | (*_bfd_error_handler) (_("can't find branch stub `%s'"), | |
8015 | stub_entry->root.string + 9); | |
b34976b6 AM |
8016 | htab->stub_error = TRUE; |
8017 | return FALSE; | |
721956f4 AM |
8018 | } |
8019 | ||
8020 | off = (stub_entry->target_value | |
8021 | + stub_entry->target_section->output_offset | |
8022 | + stub_entry->target_section->output_section->vma); | |
8023 | ||
4ce794b7 AM |
8024 | bfd_put_64 (htab->brlt->owner, off, |
8025 | htab->brlt->contents + br_entry->offset); | |
721956f4 | 8026 | |
ee75fd95 | 8027 | if (htab->relbrlt != NULL) |
721956f4 AM |
8028 | { |
8029 | /* Create a reloc for the branch lookup table entry. */ | |
8030 | Elf_Internal_Rela rela; | |
ad8e1ba5 | 8031 | bfd_byte *rl; |
5d1634d7 | 8032 | |
721956f4 | 8033 | rela.r_offset = (br_entry->offset |
4ce794b7 AM |
8034 | + htab->brlt->output_offset |
8035 | + htab->brlt->output_section->vma); | |
721956f4 AM |
8036 | rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); |
8037 | rela.r_addend = off; | |
8038 | ||
4ce794b7 AM |
8039 | rl = htab->relbrlt->contents; |
8040 | rl += htab->relbrlt->reloc_count++ * sizeof (Elf64_External_Rela); | |
8041 | bfd_elf64_swap_reloca_out (htab->relbrlt->owner, &rela, rl); | |
721956f4 AM |
8042 | } |
8043 | ||
8044 | off = (br_entry->offset | |
4ce794b7 AM |
8045 | + htab->brlt->output_offset |
8046 | + htab->brlt->output_section->vma | |
8047 | - elf_gp (htab->brlt->output_section->owner) | |
ad8e1ba5 | 8048 | - htab->stub_group[stub_entry->id_sec->id].toc_off); |
721956f4 | 8049 | |
ad8e1ba5 | 8050 | if (off + 0x80008000 > 0xffffffff || (off & 7) != 0) |
5d1634d7 AM |
8051 | { |
8052 | (*_bfd_error_handler) | |
e86ce104 | 8053 | (_("linkage table error against `%s'"), |
721956f4 | 8054 | stub_entry->root.string); |
5d1634d7 | 8055 | bfd_set_error (bfd_error_bad_value); |
b34976b6 AM |
8056 | htab->stub_error = TRUE; |
8057 | return FALSE; | |
5d1634d7 | 8058 | } |
41bd81ab | 8059 | |
721956f4 | 8060 | indx = off; |
ad8e1ba5 AM |
8061 | if (stub_entry->stub_type != ppc_stub_plt_branch_r2off) |
8062 | { | |
97b639ba | 8063 | bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (indx), loc); |
ad8e1ba5 | 8064 | loc += 4; |
97b639ba | 8065 | bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (indx), loc); |
ad8e1ba5 AM |
8066 | size = 16; |
8067 | } | |
8068 | else | |
8069 | { | |
8070 | bfd_vma r2off; | |
8071 | ||
8072 | r2off = (htab->stub_group[stub_entry->target_section->id].toc_off | |
8073 | - htab->stub_group[stub_entry->id_sec->id].toc_off); | |
97b639ba | 8074 | bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc); |
ad8e1ba5 | 8075 | loc += 4; |
97b639ba | 8076 | bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (indx), loc); |
ad8e1ba5 | 8077 | loc += 4; |
97b639ba | 8078 | bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (indx), loc); |
ad8e1ba5 | 8079 | loc += 4; |
97b639ba | 8080 | bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc); |
ad8e1ba5 | 8081 | loc += 4; |
97b639ba | 8082 | bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc); |
ad8e1ba5 AM |
8083 | size = 28; |
8084 | } | |
8085 | loc += 4; | |
97b639ba | 8086 | bfd_put_32 (htab->stub_bfd, MTCTR_R11, loc); |
ad8e1ba5 | 8087 | loc += 4; |
97b639ba | 8088 | bfd_put_32 (htab->stub_bfd, BCTR, loc); |
721956f4 | 8089 | break; |
5d1634d7 | 8090 | |
721956f4 | 8091 | case ppc_stub_plt_call: |
c862ae31 AM |
8092 | /* Do the best we can for shared libraries built without |
8093 | exporting ".foo" for each "foo". This can happen when symbol | |
8094 | versioning scripts strip all bar a subset of symbols. */ | |
8387904d AM |
8095 | if (stub_entry->h->oh != NULL |
8096 | && stub_entry->h->oh->elf.root.type != bfd_link_hash_defined | |
34814b9f | 8097 | && stub_entry->h->oh->elf.root.type != bfd_link_hash_defweak) |
c862ae31 AM |
8098 | { |
8099 | /* Point the symbol at the stub. There may be multiple stubs, | |
8100 | we don't really care; The main thing is to make this sym | |
8f3bab57 AM |
8101 | defined somewhere. Maybe defining the symbol in the stub |
8102 | section is a silly idea. If we didn't do this, htab->top_id | |
8103 | could disappear. */ | |
34814b9f AM |
8104 | stub_entry->h->oh->elf.root.type = bfd_link_hash_defined; |
8105 | stub_entry->h->oh->elf.root.u.def.section = stub_entry->stub_sec; | |
8106 | stub_entry->h->oh->elf.root.u.def.value = stub_entry->stub_offset; | |
c862ae31 AM |
8107 | } |
8108 | ||
721956f4 | 8109 | /* Now build the stub. */ |
411e1bfb AM |
8110 | off = (bfd_vma) -1; |
8111 | for (ent = stub_entry->h->elf.plt.plist; ent != NULL; ent = ent->next) | |
8112 | if (ent->addend == stub_entry->addend) | |
8113 | { | |
8114 | off = ent->plt.offset; | |
8115 | break; | |
8116 | } | |
721956f4 AM |
8117 | if (off >= (bfd_vma) -2) |
8118 | abort (); | |
8119 | ||
8120 | off &= ~ (bfd_vma) 1; | |
4ce794b7 AM |
8121 | off += (htab->plt->output_offset |
8122 | + htab->plt->output_section->vma | |
8123 | - elf_gp (htab->plt->output_section->owner) | |
ad8e1ba5 | 8124 | - htab->stub_group[stub_entry->id_sec->id].toc_off); |
721956f4 | 8125 | |
ad8e1ba5 | 8126 | if (off + 0x80008000 > 0xffffffff || (off & 7) != 0) |
721956f4 AM |
8127 | { |
8128 | (*_bfd_error_handler) | |
8129 | (_("linkage table error against `%s'"), | |
8130 | stub_entry->h->elf.root.root.string); | |
8131 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 AM |
8132 | htab->stub_error = TRUE; |
8133 | return FALSE; | |
721956f4 AM |
8134 | } |
8135 | ||
97b639ba | 8136 | p = build_plt_stub (htab->stub_bfd, loc, off); |
721956f4 AM |
8137 | size = p - loc; |
8138 | break; | |
8139 | ||
8140 | default: | |
8141 | BFD_FAIL (); | |
b34976b6 | 8142 | return FALSE; |
721956f4 AM |
8143 | } |
8144 | ||
eea6121a | 8145 | stub_entry->stub_sec->size += size; |
97b639ba | 8146 | |
ee75fd95 | 8147 | if (htab->emit_stub_syms) |
97b639ba AM |
8148 | { |
8149 | struct elf_link_hash_entry *h; | |
ee75fd95 AM |
8150 | size_t len1, len2; |
8151 | char *name; | |
8152 | const char *const stub_str[] = { "long_branch", | |
8153 | "long_branch_r2off", | |
8154 | "plt_branch", | |
8155 | "plt_branch_r2off", | |
8156 | "plt_call" }; | |
8157 | ||
8158 | len1 = strlen (stub_str[stub_entry->stub_type - 1]); | |
8159 | len2 = strlen (stub_entry->root.string); | |
8160 | name = bfd_malloc (len1 + len2 + 2); | |
8161 | if (name == NULL) | |
8162 | return FALSE; | |
8163 | memcpy (name, stub_entry->root.string, 9); | |
8164 | memcpy (name + 9, stub_str[stub_entry->stub_type - 1], len1); | |
8165 | memcpy (name + len1 + 9, stub_entry->root.string + 8, len2 - 8 + 1); | |
8166 | h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE); | |
97b639ba AM |
8167 | if (h == NULL) |
8168 | return FALSE; | |
8169 | if (h->root.type == bfd_link_hash_new) | |
8170 | { | |
8171 | h->root.type = bfd_link_hash_defined; | |
8172 | h->root.u.def.section = stub_entry->stub_sec; | |
8173 | h->root.u.def.value = stub_entry->stub_offset; | |
f5385ebf AM |
8174 | h->ref_regular = 1; |
8175 | h->def_regular = 1; | |
8176 | h->ref_regular_nonweak = 1; | |
8177 | h->forced_local = 1; | |
8178 | h->non_elf = 0; | |
97b639ba AM |
8179 | } |
8180 | } | |
8181 | ||
b34976b6 | 8182 | return TRUE; |
721956f4 AM |
8183 | } |
8184 | ||
8185 | /* As above, but don't actually build the stub. Just bump offset so | |
8186 | we know stub section sizes, and select plt_branch stubs where | |
8187 | long_branch stubs won't do. */ | |
8188 | ||
b34976b6 | 8189 | static bfd_boolean |
4ce794b7 | 8190 | ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg) |
721956f4 AM |
8191 | { |
8192 | struct ppc_stub_hash_entry *stub_entry; | |
63bc6f6c | 8193 | struct bfd_link_info *info; |
721956f4 AM |
8194 | struct ppc_link_hash_table *htab; |
8195 | bfd_vma off; | |
8196 | int size; | |
8197 | ||
8198 | /* Massage our args to the form they really have. */ | |
8199 | stub_entry = (struct ppc_stub_hash_entry *) gen_entry; | |
63bc6f6c AM |
8200 | info = in_arg; |
8201 | ||
8202 | htab = ppc_hash_table (info); | |
721956f4 AM |
8203 | |
8204 | if (stub_entry->stub_type == ppc_stub_plt_call) | |
8205 | { | |
411e1bfb | 8206 | struct plt_entry *ent; |
58ac9f71 | 8207 | off = (bfd_vma) -1; |
411e1bfb AM |
8208 | for (ent = stub_entry->h->elf.plt.plist; ent != NULL; ent = ent->next) |
8209 | if (ent->addend == stub_entry->addend) | |
8210 | { | |
8211 | off = ent->plt.offset & ~(bfd_vma) 1; | |
8212 | break; | |
8213 | } | |
58ac9f71 | 8214 | if (off >= (bfd_vma) -2) |
411e1bfb | 8215 | abort (); |
4ce794b7 AM |
8216 | off += (htab->plt->output_offset |
8217 | + htab->plt->output_section->vma | |
8218 | - elf_gp (htab->plt->output_section->owner) | |
ad8e1ba5 | 8219 | - htab->stub_group[stub_entry->id_sec->id].toc_off); |
721956f4 | 8220 | |
ad8e1ba5 | 8221 | size = PLT_CALL_STUB_SIZE; |
4ce794b7 | 8222 | if (PPC_HA (off + 16) != PPC_HA (off)) |
721956f4 AM |
8223 | size += 4; |
8224 | } | |
8225 | else | |
8226 | { | |
ad8e1ba5 AM |
8227 | /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off |
8228 | variants. */ | |
721956f4 AM |
8229 | off = (stub_entry->target_value |
8230 | + stub_entry->target_section->output_offset | |
8231 | + stub_entry->target_section->output_section->vma); | |
eea6121a | 8232 | off -= (stub_entry->stub_sec->size |
721956f4 AM |
8233 | + stub_entry->stub_sec->output_offset |
8234 | + stub_entry->stub_sec->output_section->vma); | |
8235 | ||
ad8e1ba5 AM |
8236 | /* Reset the stub type from the plt variant in case we now |
8237 | can reach with a shorter stub. */ | |
8238 | if (stub_entry->stub_type >= ppc_stub_plt_branch) | |
8239 | stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch; | |
8240 | ||
8241 | size = 4; | |
8242 | if (stub_entry->stub_type == ppc_stub_long_branch_r2off) | |
8243 | { | |
8244 | off -= 12; | |
8245 | size = 16; | |
8246 | } | |
8247 | ||
8248 | /* If the branch offset if too big, use a ppc_stub_plt_branch. */ | |
721956f4 AM |
8249 | if (off + (1 << 25) >= (bfd_vma) (1 << 26)) |
8250 | { | |
8251 | struct ppc_branch_hash_entry *br_entry; | |
8252 | ||
8253 | br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table, | |
8254 | stub_entry->root.string + 9, | |
b34976b6 | 8255 | TRUE, FALSE); |
721956f4 AM |
8256 | if (br_entry == NULL) |
8257 | { | |
8258 | (*_bfd_error_handler) (_("can't build branch stub `%s'"), | |
8259 | stub_entry->root.string + 9); | |
b34976b6 AM |
8260 | htab->stub_error = TRUE; |
8261 | return FALSE; | |
721956f4 AM |
8262 | } |
8263 | ||
8264 | if (br_entry->iter != htab->stub_iteration) | |
8265 | { | |
8266 | br_entry->iter = htab->stub_iteration; | |
eea6121a AM |
8267 | br_entry->offset = htab->brlt->size; |
8268 | htab->brlt->size += 8; | |
63bc6f6c | 8269 | |
ee75fd95 | 8270 | if (htab->relbrlt != NULL) |
eea6121a | 8271 | htab->relbrlt->size += sizeof (Elf64_External_Rela); |
721956f4 | 8272 | } |
ad8e1ba5 AM |
8273 | |
8274 | stub_entry->stub_type += ppc_stub_plt_branch - ppc_stub_long_branch; | |
721956f4 | 8275 | size = 16; |
ad8e1ba5 AM |
8276 | if (stub_entry->stub_type != ppc_stub_plt_branch) |
8277 | size = 28; | |
721956f4 | 8278 | } |
ee75fd95 AM |
8279 | |
8280 | if (info->emitrelocations | |
8281 | && (stub_entry->stub_type == ppc_stub_long_branch | |
8282 | || stub_entry->stub_type == ppc_stub_long_branch_r2off)) | |
8283 | stub_entry->stub_sec->reloc_count += 1; | |
721956f4 AM |
8284 | } |
8285 | ||
eea6121a | 8286 | stub_entry->stub_sec->size += size; |
b34976b6 | 8287 | return TRUE; |
721956f4 AM |
8288 | } |
8289 | ||
8290 | /* Set up various things so that we can make a list of input sections | |
8291 | for each output section included in the link. Returns -1 on error, | |
cedb70c5 | 8292 | 0 when no stubs will be needed, and 1 on success. */ |
721956f4 AM |
8293 | |
8294 | int | |
4c52953f AM |
8295 | ppc64_elf_setup_section_lists (bfd *output_bfd, |
8296 | struct bfd_link_info *info, | |
8297 | int no_multi_toc) | |
721956f4 AM |
8298 | { |
8299 | bfd *input_bfd; | |
734b6cf9 | 8300 | int top_id, top_index, id; |
721956f4 | 8301 | asection *section; |
734b6cf9 | 8302 | asection **input_list; |
721956f4 AM |
8303 | bfd_size_type amt; |
8304 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
8305 | ||
4c52953f AM |
8306 | htab->no_multi_toc = no_multi_toc; |
8307 | ||
4ce794b7 | 8308 | if (htab->brlt == NULL) |
721956f4 AM |
8309 | return 0; |
8310 | ||
1e2f5b6e | 8311 | /* Find the top input section id. */ |
3d6f9012 | 8312 | for (input_bfd = info->input_bfds, top_id = 3; |
721956f4 AM |
8313 | input_bfd != NULL; |
8314 | input_bfd = input_bfd->link_next) | |
8315 | { | |
721956f4 AM |
8316 | for (section = input_bfd->sections; |
8317 | section != NULL; | |
8318 | section = section->next) | |
8319 | { | |
8320 | if (top_id < section->id) | |
8321 | top_id = section->id; | |
8322 | } | |
8323 | } | |
721956f4 | 8324 | |
8f3bab57 | 8325 | htab->top_id = top_id; |
721956f4 | 8326 | amt = sizeof (struct map_stub) * (top_id + 1); |
4ce794b7 | 8327 | htab->stub_group = bfd_zmalloc (amt); |
721956f4 AM |
8328 | if (htab->stub_group == NULL) |
8329 | return -1; | |
8330 | ||
3d6f9012 AM |
8331 | /* Set toc_off for com, und, abs and ind sections. */ |
8332 | for (id = 0; id < 3; id++) | |
8333 | htab->stub_group[id].toc_off = TOC_BASE_OFF; | |
721956f4 | 8334 | |
3d6f9012 | 8335 | elf_gp (output_bfd) = htab->toc_curr = ppc64_elf_toc (output_bfd); |
734b6cf9 AM |
8336 | |
8337 | /* We can't use output_bfd->section_count here to find the top output | |
8338 | section index as some sections may have been removed, and | |
8423293d | 8339 | strip_excluded_output_sections doesn't renumber the indices. */ |
734b6cf9 AM |
8340 | for (section = output_bfd->sections, top_index = 0; |
8341 | section != NULL; | |
8342 | section = section->next) | |
8343 | { | |
8344 | if (top_index < section->index) | |
8345 | top_index = section->index; | |
8346 | } | |
8347 | ||
8348 | htab->top_index = top_index; | |
8349 | amt = sizeof (asection *) * (top_index + 1); | |
4ce794b7 | 8350 | input_list = bfd_zmalloc (amt); |
734b6cf9 AM |
8351 | htab->input_list = input_list; |
8352 | if (input_list == NULL) | |
8353 | return -1; | |
8354 | ||
721956f4 AM |
8355 | return 1; |
8356 | } | |
8357 | ||
e717da7e AM |
8358 | /* The linker repeatedly calls this function for each TOC input section |
8359 | and linker generated GOT section. Group input bfds such that the toc | |
8360 | within a group is less than 64k in size. Will break with cute linker | |
8361 | scripts that play games with dot in the output toc section. */ | |
ad8e1ba5 AM |
8362 | |
8363 | void | |
4ce794b7 | 8364 | ppc64_elf_next_toc_section (struct bfd_link_info *info, asection *isec) |
ad8e1ba5 AM |
8365 | { |
8366 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
8367 | ||
4c52953f AM |
8368 | if (!htab->no_multi_toc) |
8369 | { | |
8370 | bfd_vma addr = isec->output_offset + isec->output_section->vma; | |
8371 | bfd_vma off = addr - htab->toc_curr; | |
8372 | ||
8373 | if (off + isec->size > 0x10000) | |
8374 | htab->toc_curr = addr; | |
99877b66 | 8375 | |
4c52953f AM |
8376 | elf_gp (isec->owner) = (htab->toc_curr |
8377 | - elf_gp (isec->output_section->owner) | |
8378 | + TOC_BASE_OFF); | |
8379 | } | |
ad8e1ba5 AM |
8380 | } |
8381 | ||
8382 | /* Called after the last call to the above function. */ | |
8383 | ||
8384 | void | |
4c52953f | 8385 | ppc64_elf_reinit_toc (bfd *output_bfd, struct bfd_link_info *info) |
ad8e1ba5 AM |
8386 | { |
8387 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
ad8e1ba5 | 8388 | |
4c52953f AM |
8389 | htab->multi_toc_needed = htab->toc_curr != elf_gp (output_bfd); |
8390 | ||
ad8e1ba5 AM |
8391 | /* toc_curr tracks the TOC offset used for code sections below in |
8392 | ppc64_elf_next_input_section. Start off at 0x8000. */ | |
3d6f9012 | 8393 | htab->toc_curr = TOC_BASE_OFF; |
ad8e1ba5 AM |
8394 | } |
8395 | ||
9b5ecbd0 AM |
8396 | /* No toc references were found in ISEC. If the code in ISEC makes no |
8397 | calls, then there's no need to use toc adjusting stubs when branching | |
8398 | into ISEC. Actually, indirect calls from ISEC are OK as they will | |
4c52953f AM |
8399 | load r2. Returns -1 on error, 0 for no stub needed, 1 for stub |
8400 | needed, and 2 if a cyclical call-graph was found but no other reason | |
8401 | for a stub was detected. If called from the top level, a return of | |
8402 | 2 means the same as a return of 0. */ | |
9b5ecbd0 AM |
8403 | |
8404 | static int | |
4ce794b7 | 8405 | toc_adjusting_stub_needed (struct bfd_link_info *info, asection *isec) |
9b5ecbd0 | 8406 | { |
4c52953f AM |
8407 | Elf_Internal_Rela *relstart, *rel; |
8408 | Elf_Internal_Sym *local_syms; | |
9b5ecbd0 | 8409 | int ret; |
4c52953f | 8410 | struct ppc_link_hash_table *htab; |
9b5ecbd0 | 8411 | |
772119ce AM |
8412 | /* We know none of our code bearing sections will need toc stubs. */ |
8413 | if ((isec->flags & SEC_LINKER_CREATED) != 0) | |
8414 | return 0; | |
8415 | ||
eea6121a | 8416 | if (isec->size == 0) |
082c50f8 AM |
8417 | return 0; |
8418 | ||
4c52953f AM |
8419 | if (isec->output_section == NULL) |
8420 | return 0; | |
8421 | ||
9b5ecbd0 AM |
8422 | /* Hack for linux kernel. .fixup contains branches, but only back to |
8423 | the function that hit an exception. */ | |
4c52953f AM |
8424 | if (strcmp (isec->name, ".fixup") == 0) |
8425 | return 0; | |
9b5ecbd0 | 8426 | |
4c52953f AM |
8427 | if (isec->reloc_count == 0) |
8428 | return 0; | |
8429 | ||
8430 | relstart = _bfd_elf_link_read_relocs (isec->owner, isec, NULL, NULL, | |
8431 | info->keep_memory); | |
8432 | if (relstart == NULL) | |
8433 | return -1; | |
8434 | ||
8435 | /* Look for branches to outside of this section. */ | |
8436 | local_syms = NULL; | |
8437 | ret = 0; | |
8438 | htab = ppc_hash_table (info); | |
8439 | for (rel = relstart; rel < relstart + isec->reloc_count; ++rel) | |
9b5ecbd0 | 8440 | { |
4c52953f AM |
8441 | enum elf_ppc64_reloc_type r_type; |
8442 | unsigned long r_symndx; | |
8443 | struct elf_link_hash_entry *h; | |
8444 | Elf_Internal_Sym *sym; | |
8445 | asection *sym_sec; | |
8446 | long *opd_adjust; | |
8447 | bfd_vma sym_value; | |
8448 | bfd_vma dest; | |
8449 | ||
8450 | r_type = ELF64_R_TYPE (rel->r_info); | |
8451 | if (r_type != R_PPC64_REL24 | |
8452 | && r_type != R_PPC64_REL14 | |
8453 | && r_type != R_PPC64_REL14_BRTAKEN | |
8454 | && r_type != R_PPC64_REL14_BRNTAKEN) | |
8455 | continue; | |
8456 | ||
8457 | r_symndx = ELF64_R_SYM (rel->r_info); | |
8458 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, r_symndx, | |
8459 | isec->owner)) | |
9b5ecbd0 | 8460 | { |
4c52953f AM |
8461 | ret = -1; |
8462 | break; | |
9b5ecbd0 | 8463 | } |
9b5ecbd0 | 8464 | |
2917689a AM |
8465 | /* Calls to dynamic lib functions go through a plt call stub |
8466 | that uses r2. Branches to undefined symbols might be a call | |
8467 | using old-style dot symbols that can be satisfied by a plt | |
8468 | call into a new-style dynamic library. */ | |
4c52953f | 8469 | if (sym_sec == NULL) |
2917689a AM |
8470 | { |
8471 | struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h; | |
8472 | if (eh != NULL | |
8473 | && eh->oh != NULL | |
8474 | && eh->oh->elf.plt.plist != NULL) | |
8475 | { | |
8476 | ret = 1; | |
8477 | break; | |
8478 | } | |
4c52953f | 8479 | |
2917689a AM |
8480 | /* Ignore other undefined symbols. */ |
8481 | continue; | |
8482 | } | |
8483 | ||
8484 | /* Assume branches to other sections not included in the link need | |
8485 | stubs too, to cover -R and absolute syms. */ | |
4c52953f AM |
8486 | if (sym_sec->output_section == NULL) |
8487 | { | |
8488 | ret = 1; | |
8489 | break; | |
8490 | } | |
8491 | ||
8492 | if (h == NULL) | |
8493 | sym_value = sym->st_value; | |
8494 | else | |
8495 | { | |
8496 | if (h->root.type != bfd_link_hash_defined | |
8497 | && h->root.type != bfd_link_hash_defweak) | |
8498 | abort (); | |
8499 | sym_value = h->root.u.def.value; | |
8500 | } | |
8501 | sym_value += rel->r_addend; | |
8502 | ||
8503 | /* If this branch reloc uses an opd sym, find the code section. */ | |
8504 | opd_adjust = get_opd_info (sym_sec); | |
8505 | if (opd_adjust != NULL) | |
8506 | { | |
4c52953f AM |
8507 | if (h == NULL) |
8508 | { | |
8509 | long adjust; | |
8510 | ||
8511 | adjust = opd_adjust[sym->st_value / 8]; | |
8512 | if (adjust == -1) | |
8513 | /* Assume deleted functions won't ever be called. */ | |
8514 | continue; | |
8515 | sym_value += adjust; | |
8516 | } | |
8517 | ||
8518 | dest = opd_entry_value (sym_sec, sym_value, &sym_sec, NULL); | |
8519 | if (dest == (bfd_vma) -1) | |
8520 | continue; | |
8521 | } | |
8522 | else | |
8523 | dest = (sym_value | |
8524 | + sym_sec->output_offset | |
8525 | + sym_sec->output_section->vma); | |
8526 | ||
8527 | /* Ignore branch to self. */ | |
8528 | if (sym_sec == isec) | |
8529 | continue; | |
8530 | ||
8531 | /* If the called function uses the toc, we need a stub. */ | |
8532 | if (sym_sec->has_toc_reloc | |
8533 | || sym_sec->makes_toc_func_call) | |
8534 | { | |
8535 | ret = 1; | |
8536 | break; | |
8537 | } | |
8538 | ||
8539 | /* Assume any branch that needs a long branch stub might in fact | |
8540 | need a plt_branch stub. A plt_branch stub uses r2. */ | |
8541 | else if (dest - (isec->output_offset | |
8542 | + isec->output_section->vma | |
8543 | + rel->r_offset) + (1 << 25) >= (2 << 25)) | |
9b5ecbd0 AM |
8544 | { |
8545 | ret = 1; | |
8546 | break; | |
8547 | } | |
4c52953f AM |
8548 | |
8549 | /* If calling back to a section in the process of being tested, we | |
8550 | can't say for sure that no toc adjusting stubs are needed, so | |
8551 | don't return zero. */ | |
8552 | else if (sym_sec->call_check_in_progress) | |
8553 | ret = 2; | |
8554 | ||
8555 | /* Branches to another section that itself doesn't have any TOC | |
8556 | references are OK. Recursively call ourselves to check. */ | |
8557 | else if (sym_sec->id <= htab->top_id | |
8558 | && htab->stub_group[sym_sec->id].toc_off == 0) | |
8559 | { | |
8560 | int recur; | |
8561 | ||
8562 | /* Mark current section as indeterminate, so that other | |
8563 | sections that call back to current won't be marked as | |
8564 | known. */ | |
8565 | isec->call_check_in_progress = 1; | |
8566 | recur = toc_adjusting_stub_needed (info, sym_sec); | |
8567 | isec->call_check_in_progress = 0; | |
8568 | ||
8569 | if (recur < 0) | |
8570 | { | |
8571 | /* An error. Exit. */ | |
8572 | ret = -1; | |
8573 | break; | |
8574 | } | |
8575 | else if (recur <= 1) | |
8576 | { | |
8577 | /* Known result. Mark as checked and set section flag. */ | |
8578 | htab->stub_group[sym_sec->id].toc_off = 1; | |
8579 | if (recur != 0) | |
8580 | { | |
8581 | sym_sec->makes_toc_func_call = 1; | |
8582 | ret = 1; | |
8583 | break; | |
8584 | } | |
8585 | } | |
8586 | else | |
8587 | { | |
8588 | /* Unknown result. Continue checking. */ | |
8589 | ret = 2; | |
8590 | } | |
8591 | } | |
9b5ecbd0 AM |
8592 | } |
8593 | ||
4c52953f AM |
8594 | if (local_syms != NULL |
8595 | && (elf_tdata (isec->owner)->symtab_hdr.contents | |
8596 | != (unsigned char *) local_syms)) | |
8597 | free (local_syms); | |
8598 | if (elf_section_data (isec)->relocs != relstart) | |
8599 | free (relstart); | |
8600 | ||
9b5ecbd0 AM |
8601 | return ret; |
8602 | } | |
8603 | ||
721956f4 AM |
8604 | /* The linker repeatedly calls this function for each input section, |
8605 | in the order that input sections are linked into output sections. | |
8606 | Build lists of input sections to determine groupings between which | |
8607 | we may insert linker stubs. */ | |
8608 | ||
9b5ecbd0 | 8609 | bfd_boolean |
4ce794b7 | 8610 | ppc64_elf_next_input_section (struct bfd_link_info *info, asection *isec) |
721956f4 AM |
8611 | { |
8612 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
8613 | ||
734b6cf9 AM |
8614 | if ((isec->output_section->flags & SEC_CODE) != 0 |
8615 | && isec->output_section->index <= htab->top_index) | |
721956f4 | 8616 | { |
734b6cf9 | 8617 | asection **list = htab->input_list + isec->output_section->index; |
3d6f9012 | 8618 | /* Steal the link_sec pointer for our list. */ |
721956f4 | 8619 | #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec) |
3d6f9012 AM |
8620 | /* This happens to make the list in reverse order, |
8621 | which is what we want. */ | |
734b6cf9 AM |
8622 | PREV_SEC (isec) = *list; |
8623 | *list = isec; | |
721956f4 | 8624 | } |
ad8e1ba5 | 8625 | |
4c52953f | 8626 | if (htab->multi_toc_needed) |
9b5ecbd0 | 8627 | { |
4c52953f AM |
8628 | /* If a code section has a function that uses the TOC then we need |
8629 | to use the right TOC (obviously). Also, make sure that .opd gets | |
8630 | the correct TOC value for R_PPC64_TOC relocs that don't have or | |
8631 | can't find their function symbol (shouldn't ever happen now). */ | |
8632 | if (isec->has_toc_reloc || (isec->flags & SEC_CODE) == 0) | |
8633 | { | |
8634 | if (elf_gp (isec->owner) != 0) | |
8635 | htab->toc_curr = elf_gp (isec->owner); | |
8636 | } | |
8637 | else if (htab->stub_group[isec->id].toc_off == 0) | |
8638 | { | |
8639 | int ret = toc_adjusting_stub_needed (info, isec); | |
8640 | if (ret < 0) | |
8641 | return FALSE; | |
8642 | else | |
8643 | isec->makes_toc_func_call = ret & 1; | |
8644 | } | |
9b5ecbd0 | 8645 | } |
ad8e1ba5 AM |
8646 | |
8647 | /* Functions that don't use the TOC can belong in any TOC group. | |
8648 | Use the last TOC base. This happens to make _init and _fini | |
8649 | pasting work. */ | |
8650 | htab->stub_group[isec->id].toc_off = htab->toc_curr; | |
9b5ecbd0 | 8651 | return TRUE; |
721956f4 AM |
8652 | } |
8653 | ||
8654 | /* See whether we can group stub sections together. Grouping stub | |
8655 | sections may result in fewer stubs. More importantly, we need to | |
8656 | put all .init* and .fini* stubs at the beginning of the .init or | |
8657 | .fini output sections respectively, because glibc splits the | |
8658 | _init and _fini functions into multiple parts. Putting a stub in | |
8659 | the middle of a function is not a good idea. */ | |
8660 | ||
8661 | static void | |
4ce794b7 AM |
8662 | group_sections (struct ppc_link_hash_table *htab, |
8663 | bfd_size_type stub_group_size, | |
8664 | bfd_boolean stubs_always_before_branch) | |
721956f4 | 8665 | { |
734b6cf9 AM |
8666 | asection **list = htab->input_list + htab->top_index; |
8667 | do | |
721956f4 | 8668 | { |
734b6cf9 AM |
8669 | asection *tail = *list; |
8670 | while (tail != NULL) | |
721956f4 | 8671 | { |
734b6cf9 AM |
8672 | asection *curr; |
8673 | asection *prev; | |
8674 | bfd_size_type total; | |
8675 | bfd_boolean big_sec; | |
8676 | bfd_vma curr_toc; | |
8677 | ||
8678 | curr = tail; | |
eea6121a | 8679 | total = tail->size; |
734b6cf9 AM |
8680 | big_sec = total >= stub_group_size; |
8681 | curr_toc = htab->stub_group[tail->id].toc_off; | |
8682 | ||
8683 | while ((prev = PREV_SEC (curr)) != NULL | |
8684 | && ((total += curr->output_offset - prev->output_offset) | |
ad8e1ba5 AM |
8685 | < stub_group_size) |
8686 | && htab->stub_group[prev->id].toc_off == curr_toc) | |
734b6cf9 AM |
8687 | curr = prev; |
8688 | ||
8689 | /* OK, the size from the start of CURR to the end is less | |
8690 | than stub_group_size and thus can be handled by one stub | |
8691 | section. (or the tail section is itself larger than | |
8692 | stub_group_size, in which case we may be toast.) We | |
8693 | should really be keeping track of the total size of stubs | |
8694 | added here, as stubs contribute to the final output | |
8695 | section size. That's a little tricky, and this way will | |
8696 | only break if stubs added make the total size more than | |
8697 | 2^25, ie. for the default stub_group_size, if stubs total | |
8698 | more than 2097152 bytes, or nearly 75000 plt call stubs. */ | |
8699 | do | |
721956f4 AM |
8700 | { |
8701 | prev = PREV_SEC (tail); | |
734b6cf9 | 8702 | /* Set up this stub group. */ |
721956f4 AM |
8703 | htab->stub_group[tail->id].link_sec = curr; |
8704 | } | |
734b6cf9 AM |
8705 | while (tail != curr && (tail = prev) != NULL); |
8706 | ||
8707 | /* But wait, there's more! Input sections up to stub_group_size | |
8708 | bytes before the stub section can be handled by it too. | |
8709 | Don't do this if we have a really large section after the | |
8710 | stubs, as adding more stubs increases the chance that | |
8711 | branches may not reach into the stub section. */ | |
8712 | if (!stubs_always_before_branch && !big_sec) | |
8713 | { | |
8714 | total = 0; | |
8715 | while (prev != NULL | |
8716 | && ((total += tail->output_offset - prev->output_offset) | |
8717 | < stub_group_size) | |
8718 | && htab->stub_group[prev->id].toc_off == curr_toc) | |
8719 | { | |
8720 | tail = prev; | |
8721 | prev = PREV_SEC (tail); | |
8722 | htab->stub_group[tail->id].link_sec = curr; | |
8723 | } | |
8724 | } | |
8725 | tail = prev; | |
721956f4 AM |
8726 | } |
8727 | } | |
734b6cf9 AM |
8728 | while (list-- != htab->input_list); |
8729 | free (htab->input_list); | |
721956f4 AM |
8730 | #undef PREV_SEC |
8731 | } | |
8732 | ||
721956f4 AM |
8733 | /* Determine and set the size of the stub section for a final link. |
8734 | ||
8735 | The basic idea here is to examine all the relocations looking for | |
8736 | PC-relative calls to a target that is unreachable with a "bl" | |
8737 | instruction. */ | |
8738 | ||
b34976b6 | 8739 | bfd_boolean |
4ce794b7 | 8740 | ppc64_elf_size_stubs (bfd *output_bfd, |
4ce794b7 AM |
8741 | struct bfd_link_info *info, |
8742 | bfd_signed_vma group_size, | |
8743 | asection *(*add_stub_section) (const char *, asection *), | |
8744 | void (*layout_sections_again) (void)) | |
721956f4 AM |
8745 | { |
8746 | bfd_size_type stub_group_size; | |
b34976b6 | 8747 | bfd_boolean stubs_always_before_branch; |
721956f4 AM |
8748 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
8749 | ||
8750 | /* Stash our params away. */ | |
721956f4 AM |
8751 | htab->add_stub_section = add_stub_section; |
8752 | htab->layout_sections_again = layout_sections_again; | |
8753 | stubs_always_before_branch = group_size < 0; | |
8754 | if (group_size < 0) | |
8755 | stub_group_size = -group_size; | |
8756 | else | |
8757 | stub_group_size = group_size; | |
8758 | if (stub_group_size == 1) | |
8759 | { | |
8760 | /* Default values. */ | |
58ac9f71 AM |
8761 | if (stubs_always_before_branch) |
8762 | { | |
8763 | stub_group_size = 0x1e00000; | |
8764 | if (htab->has_14bit_branch) | |
8765 | stub_group_size = 0x7800; | |
8766 | } | |
8767 | else | |
8768 | { | |
8769 | stub_group_size = 0x1c00000; | |
8770 | if (htab->has_14bit_branch) | |
8771 | stub_group_size = 0x7000; | |
8772 | } | |
721956f4 AM |
8773 | } |
8774 | ||
8775 | group_sections (htab, stub_group_size, stubs_always_before_branch); | |
8776 | ||
721956f4 AM |
8777 | while (1) |
8778 | { | |
8779 | bfd *input_bfd; | |
8780 | unsigned int bfd_indx; | |
8781 | asection *stub_sec; | |
b34976b6 | 8782 | bfd_boolean stub_changed; |
721956f4 AM |
8783 | |
8784 | htab->stub_iteration += 1; | |
b34976b6 | 8785 | stub_changed = FALSE; |
721956f4 AM |
8786 | |
8787 | for (input_bfd = info->input_bfds, bfd_indx = 0; | |
8788 | input_bfd != NULL; | |
8789 | input_bfd = input_bfd->link_next, bfd_indx++) | |
8790 | { | |
8791 | Elf_Internal_Shdr *symtab_hdr; | |
8792 | asection *section; | |
6cdc0ccc | 8793 | Elf_Internal_Sym *local_syms = NULL; |
721956f4 AM |
8794 | |
8795 | /* We'll need the symbol table in a second. */ | |
8796 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
8797 | if (symtab_hdr->sh_info == 0) | |
8798 | continue; | |
8799 | ||
721956f4 AM |
8800 | /* Walk over each section attached to the input bfd. */ |
8801 | for (section = input_bfd->sections; | |
8802 | section != NULL; | |
8803 | section = section->next) | |
8804 | { | |
721956f4 | 8805 | Elf_Internal_Rela *internal_relocs, *irelaend, *irela; |
721956f4 AM |
8806 | |
8807 | /* If there aren't any relocs, then there's nothing more | |
8808 | to do. */ | |
8809 | if ((section->flags & SEC_RELOC) == 0 | |
8810 | || section->reloc_count == 0) | |
8811 | continue; | |
8812 | ||
8813 | /* If this section is a link-once section that will be | |
8814 | discarded, then don't create any stubs. */ | |
8815 | if (section->output_section == NULL | |
8816 | || section->output_section->owner != output_bfd) | |
8817 | continue; | |
8818 | ||
1e2f5b6e AM |
8819 | /* Get the relocs. */ |
8820 | internal_relocs | |
4ce794b7 | 8821 | = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL, |
45d6a902 | 8822 | info->keep_memory); |
721956f4 | 8823 | if (internal_relocs == NULL) |
1e2f5b6e | 8824 | goto error_ret_free_local; |
721956f4 AM |
8825 | |
8826 | /* Now examine each relocation. */ | |
8827 | irela = internal_relocs; | |
8828 | irelaend = irela + section->reloc_count; | |
8829 | for (; irela < irelaend; irela++) | |
8830 | { | |
4ce794b7 AM |
8831 | enum elf_ppc64_reloc_type r_type; |
8832 | unsigned int r_indx; | |
721956f4 AM |
8833 | enum ppc_stub_type stub_type; |
8834 | struct ppc_stub_hash_entry *stub_entry; | |
8387904d | 8835 | asection *sym_sec, *code_sec; |
721956f4 AM |
8836 | bfd_vma sym_value; |
8837 | bfd_vma destination; | |
8843416a | 8838 | bfd_boolean ok_dest; |
721956f4 | 8839 | struct ppc_link_hash_entry *hash; |
8387904d | 8840 | struct ppc_link_hash_entry *fdh; |
411e1bfb AM |
8841 | struct elf_link_hash_entry *h; |
8842 | Elf_Internal_Sym *sym; | |
721956f4 AM |
8843 | char *stub_name; |
8844 | const asection *id_sec; | |
8387904d | 8845 | long *opd_adjust; |
721956f4 AM |
8846 | |
8847 | r_type = ELF64_R_TYPE (irela->r_info); | |
8848 | r_indx = ELF64_R_SYM (irela->r_info); | |
8849 | ||
4ce794b7 | 8850 | if (r_type >= R_PPC64_max) |
721956f4 AM |
8851 | { |
8852 | bfd_set_error (bfd_error_bad_value); | |
6cdc0ccc | 8853 | goto error_ret_free_internal; |
721956f4 AM |
8854 | } |
8855 | ||
8856 | /* Only look for stubs on branch instructions. */ | |
4ce794b7 AM |
8857 | if (r_type != R_PPC64_REL24 |
8858 | && r_type != R_PPC64_REL14 | |
8859 | && r_type != R_PPC64_REL14_BRTAKEN | |
8860 | && r_type != R_PPC64_REL14_BRNTAKEN) | |
721956f4 AM |
8861 | continue; |
8862 | ||
8863 | /* Now determine the call target, its name, value, | |
8864 | section. */ | |
411e1bfb AM |
8865 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, |
8866 | r_indx, input_bfd)) | |
8867 | goto error_ret_free_internal; | |
8868 | hash = (struct ppc_link_hash_entry *) h; | |
8869 | ||
8843416a | 8870 | ok_dest = FALSE; |
8387904d | 8871 | fdh = NULL; |
411e1bfb | 8872 | if (hash == NULL) |
721956f4 | 8873 | { |
411e1bfb | 8874 | sym_value = sym->st_value; |
8843416a | 8875 | ok_dest = TRUE; |
721956f4 AM |
8876 | } |
8877 | else | |
8878 | { | |
411e1bfb | 8879 | sym_value = 0; |
99877b66 AM |
8880 | /* Recognise an old ABI func code entry sym, and |
8881 | use the func descriptor sym instead. */ | |
ceb1f1ef | 8882 | if (hash->elf.root.root.string[0] == '.' |
8387904d AM |
8883 | && (fdh = get_fdh (hash, htab)) != NULL) |
8884 | { | |
8387904d AM |
8885 | if (fdh->elf.root.type == bfd_link_hash_defined |
8886 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
8887 | { | |
8888 | sym_sec = fdh->elf.root.u.def.section; | |
8889 | sym_value = fdh->elf.root.u.def.value; | |
8890 | if (sym_sec->output_section != NULL) | |
8891 | ok_dest = TRUE; | |
8892 | } | |
99877b66 AM |
8893 | else |
8894 | fdh = NULL; | |
8387904d AM |
8895 | } |
8896 | else if (hash->elf.root.type == bfd_link_hash_defined | |
8897 | || hash->elf.root.type == bfd_link_hash_defweak) | |
721956f4 | 8898 | { |
721956f4 AM |
8899 | sym_value = hash->elf.root.u.def.value; |
8900 | if (sym_sec->output_section != NULL) | |
8843416a | 8901 | ok_dest = TRUE; |
721956f4 AM |
8902 | } |
8903 | else if (hash->elf.root.type == bfd_link_hash_undefweak) | |
8904 | ; | |
8905 | else if (hash->elf.root.type == bfd_link_hash_undefined) | |
8906 | ; | |
8907 | else | |
8908 | { | |
8909 | bfd_set_error (bfd_error_bad_value); | |
8910 | goto error_ret_free_internal; | |
8911 | } | |
8912 | } | |
8913 | ||
8843416a AM |
8914 | destination = 0; |
8915 | if (ok_dest) | |
8916 | { | |
8917 | sym_value += irela->r_addend; | |
8918 | destination = (sym_value | |
8919 | + sym_sec->output_offset | |
8920 | + sym_sec->output_section->vma); | |
8921 | } | |
8922 | ||
8387904d AM |
8923 | code_sec = sym_sec; |
8924 | opd_adjust = get_opd_info (sym_sec); | |
8925 | if (opd_adjust != NULL) | |
8926 | { | |
8927 | bfd_vma dest; | |
8928 | ||
8929 | if (hash == NULL) | |
8930 | { | |
3f764659 | 8931 | long adjust = opd_adjust[sym_value / 8]; |
8387904d AM |
8932 | if (adjust == -1) |
8933 | continue; | |
8934 | sym_value += adjust; | |
8935 | } | |
8936 | dest = opd_entry_value (sym_sec, sym_value, | |
8937 | &code_sec, &sym_value); | |
8938 | if (dest != (bfd_vma) -1) | |
8939 | { | |
8940 | destination = dest; | |
8941 | if (fdh != NULL) | |
8942 | { | |
8943 | /* Fixup old ABI sym to point at code | |
8944 | entry. */ | |
99877b66 | 8945 | hash->elf.root.type = bfd_link_hash_defweak; |
8387904d AM |
8946 | hash->elf.root.u.def.section = code_sec; |
8947 | hash->elf.root.u.def.value = sym_value; | |
8948 | } | |
8949 | } | |
8950 | } | |
8951 | ||
721956f4 AM |
8952 | /* Determine what (if any) linker stub is needed. */ |
8953 | stub_type = ppc_type_of_stub (section, irela, &hash, | |
8954 | destination); | |
ad8e1ba5 AM |
8955 | |
8956 | if (stub_type != ppc_stub_plt_call) | |
8957 | { | |
8958 | /* Check whether we need a TOC adjusting stub. | |
8959 | Since the linker pastes together pieces from | |
8960 | different object files when creating the | |
8961 | _init and _fini functions, it may be that a | |
8962 | call to what looks like a local sym is in | |
8963 | fact a call needing a TOC adjustment. */ | |
8387904d AM |
8964 | if (code_sec != NULL |
8965 | && code_sec->output_section != NULL | |
8966 | && (htab->stub_group[code_sec->id].toc_off | |
9b5ecbd0 | 8967 | != htab->stub_group[section->id].toc_off) |
4c52953f AM |
8968 | && (code_sec->has_toc_reloc |
8969 | || code_sec->makes_toc_func_call)) | |
ad8e1ba5 AM |
8970 | stub_type = ppc_stub_long_branch_r2off; |
8971 | } | |
8972 | ||
721956f4 AM |
8973 | if (stub_type == ppc_stub_none) |
8974 | continue; | |
8975 | ||
411e1bfb AM |
8976 | /* __tls_get_addr calls might be eliminated. */ |
8977 | if (stub_type != ppc_stub_plt_call | |
8978 | && hash != NULL | |
8387904d AM |
8979 | && (hash == htab->tls_get_addr |
8980 | || hash == htab->tls_get_addr_fd) | |
411e1bfb AM |
8981 | && section->has_tls_reloc |
8982 | && irela != internal_relocs) | |
8983 | { | |
8984 | /* Get tls info. */ | |
e7b938ca | 8985 | char *tls_mask; |
411e1bfb | 8986 | |
0d4792f7 | 8987 | if (!get_tls_mask (&tls_mask, NULL, &local_syms, |
411e1bfb AM |
8988 | irela - 1, input_bfd)) |
8989 | goto error_ret_free_internal; | |
e7b938ca | 8990 | if (*tls_mask != 0) |
411e1bfb AM |
8991 | continue; |
8992 | } | |
8993 | ||
721956f4 AM |
8994 | /* Support for grouping stub sections. */ |
8995 | id_sec = htab->stub_group[section->id].link_sec; | |
8996 | ||
8997 | /* Get the name of this stub. */ | |
8998 | stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela); | |
8999 | if (!stub_name) | |
9000 | goto error_ret_free_internal; | |
9001 | ||
9002 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, | |
b34976b6 | 9003 | stub_name, FALSE, FALSE); |
721956f4 AM |
9004 | if (stub_entry != NULL) |
9005 | { | |
9006 | /* The proper stub has already been created. */ | |
9007 | free (stub_name); | |
9008 | continue; | |
9009 | } | |
9010 | ||
9011 | stub_entry = ppc_add_stub (stub_name, section, htab); | |
9012 | if (stub_entry == NULL) | |
9013 | { | |
9014 | free (stub_name); | |
6cdc0ccc AM |
9015 | error_ret_free_internal: |
9016 | if (elf_section_data (section)->relocs == NULL) | |
9017 | free (internal_relocs); | |
9018 | error_ret_free_local: | |
9019 | if (local_syms != NULL | |
9020 | && (symtab_hdr->contents | |
9021 | != (unsigned char *) local_syms)) | |
9022 | free (local_syms); | |
b34976b6 | 9023 | return FALSE; |
721956f4 AM |
9024 | } |
9025 | ||
ad8e1ba5 | 9026 | stub_entry->stub_type = stub_type; |
721956f4 | 9027 | stub_entry->target_value = sym_value; |
8387904d | 9028 | stub_entry->target_section = code_sec; |
721956f4 | 9029 | stub_entry->h = hash; |
411e1bfb | 9030 | stub_entry->addend = irela->r_addend; |
ee75fd95 AM |
9031 | |
9032 | if (stub_entry->h != NULL) | |
9033 | htab->stub_globals += 1; | |
9034 | ||
b34976b6 | 9035 | stub_changed = TRUE; |
721956f4 AM |
9036 | } |
9037 | ||
9038 | /* We're done with the internal relocs, free them. */ | |
6cdc0ccc | 9039 | if (elf_section_data (section)->relocs != internal_relocs) |
1e2f5b6e | 9040 | free (internal_relocs); |
721956f4 | 9041 | } |
6cdc0ccc AM |
9042 | |
9043 | if (local_syms != NULL | |
9044 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
9045 | { | |
9046 | if (!info->keep_memory) | |
9047 | free (local_syms); | |
9048 | else | |
9049 | symtab_hdr->contents = (unsigned char *) local_syms; | |
9050 | } | |
721956f4 AM |
9051 | } |
9052 | ||
9053 | if (!stub_changed) | |
9054 | break; | |
9055 | ||
9056 | /* OK, we've added some stubs. Find out the new size of the | |
9057 | stub sections. */ | |
9058 | for (stub_sec = htab->stub_bfd->sections; | |
9059 | stub_sec != NULL; | |
9060 | stub_sec = stub_sec->next) | |
e717da7e | 9061 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) |
ee75fd95 AM |
9062 | { |
9063 | stub_sec->size = 0; | |
9064 | stub_sec->reloc_count = 0; | |
9065 | } | |
eea6121a AM |
9066 | |
9067 | htab->brlt->size = 0; | |
ee75fd95 | 9068 | if (htab->relbrlt != NULL) |
eea6121a | 9069 | htab->relbrlt->size = 0; |
721956f4 | 9070 | |
63bc6f6c | 9071 | bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, info); |
721956f4 AM |
9072 | |
9073 | /* Ask the linker to do its stuff. */ | |
9074 | (*htab->layout_sections_again) (); | |
9075 | } | |
9076 | ||
afbe61cf AM |
9077 | /* It would be nice to strip .branch_lt from the output if the |
9078 | section is empty, but it's too late. If we strip sections here, | |
9079 | the dynamic symbol table is corrupted since the section symbol | |
9080 | for the stripped section isn't written. */ | |
721956f4 | 9081 | |
b34976b6 | 9082 | return TRUE; |
721956f4 AM |
9083 | } |
9084 | ||
9085 | /* Called after we have determined section placement. If sections | |
805fc799 | 9086 | move, we'll be called again. Provide a value for TOCstart. */ |
721956f4 | 9087 | |
805fc799 | 9088 | bfd_vma |
4ce794b7 | 9089 | ppc64_elf_toc (bfd *obfd) |
721956f4 | 9090 | { |
805fc799 AM |
9091 | asection *s; |
9092 | bfd_vma TOCstart; | |
721956f4 | 9093 | |
805fc799 AM |
9094 | /* The TOC consists of sections .got, .toc, .tocbss, .plt in that |
9095 | order. The TOC starts where the first of these sections starts. */ | |
9096 | s = bfd_get_section_by_name (obfd, ".got"); | |
9097 | if (s == NULL) | |
9098 | s = bfd_get_section_by_name (obfd, ".toc"); | |
9099 | if (s == NULL) | |
9100 | s = bfd_get_section_by_name (obfd, ".tocbss"); | |
9101 | if (s == NULL) | |
9102 | s = bfd_get_section_by_name (obfd, ".plt"); | |
9103 | if (s == NULL) | |
9104 | { | |
9105 | /* This may happen for | |
9106 | o references to TOC base (SYM@toc / TOC[tc0]) without a | |
9107 | .toc directive | |
9108 | o bad linker script | |
9109 | o --gc-sections and empty TOC sections | |
9110 | ||
9111 | FIXME: Warn user? */ | |
9112 | ||
9113 | /* Look for a likely section. We probably won't even be | |
9114 | using TOCstart. */ | |
9115 | for (s = obfd->sections; s != NULL; s = s->next) | |
9116 | if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY)) | |
9117 | == (SEC_ALLOC | SEC_SMALL_DATA)) | |
9118 | break; | |
721956f4 | 9119 | if (s == NULL) |
805fc799 AM |
9120 | for (s = obfd->sections; s != NULL; s = s->next) |
9121 | if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA)) | |
9122 | == (SEC_ALLOC | SEC_SMALL_DATA)) | |
9123 | break; | |
721956f4 | 9124 | if (s == NULL) |
805fc799 AM |
9125 | for (s = obfd->sections; s != NULL; s = s->next) |
9126 | if ((s->flags & (SEC_ALLOC | SEC_READONLY)) == SEC_ALLOC) | |
9127 | break; | |
721956f4 | 9128 | if (s == NULL) |
805fc799 AM |
9129 | for (s = obfd->sections; s != NULL; s = s->next) |
9130 | if ((s->flags & SEC_ALLOC) == SEC_ALLOC) | |
9131 | break; | |
9132 | } | |
721956f4 | 9133 | |
805fc799 AM |
9134 | TOCstart = 0; |
9135 | if (s != NULL) | |
9136 | TOCstart = s->output_section->vma + s->output_offset; | |
721956f4 | 9137 | |
805fc799 | 9138 | return TOCstart; |
721956f4 AM |
9139 | } |
9140 | ||
9141 | /* Build all the stubs associated with the current output file. | |
9142 | The stubs are kept in a hash table attached to the main linker | |
9143 | hash table. This function is called via gldelf64ppc_finish. */ | |
9144 | ||
b34976b6 | 9145 | bfd_boolean |
4ce794b7 AM |
9146 | ppc64_elf_build_stubs (bfd_boolean emit_stub_syms, |
9147 | struct bfd_link_info *info, | |
9148 | char **stats) | |
5d1634d7 AM |
9149 | { |
9150 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
721956f4 | 9151 | asection *stub_sec; |
5d1634d7 | 9152 | bfd_byte *p; |
e717da7e | 9153 | int stub_sec_count = 0; |
5d1634d7 | 9154 | |
ad8e1ba5 | 9155 | htab->emit_stub_syms = emit_stub_syms; |
eea6121a AM |
9156 | |
9157 | /* Allocate memory to hold the linker stubs. */ | |
721956f4 AM |
9158 | for (stub_sec = htab->stub_bfd->sections; |
9159 | stub_sec != NULL; | |
9160 | stub_sec = stub_sec->next) | |
eea6121a AM |
9161 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0 |
9162 | && stub_sec->size != 0) | |
e717da7e | 9163 | { |
eea6121a AM |
9164 | stub_sec->contents = bfd_zalloc (htab->stub_bfd, stub_sec->size); |
9165 | if (stub_sec->contents == NULL) | |
9166 | return FALSE; | |
9167 | /* We want to check that built size is the same as calculated | |
9168 | size. rawsize is a convenient location to use. */ | |
9169 | stub_sec->rawsize = stub_sec->size; | |
9170 | stub_sec->size = 0; | |
e717da7e | 9171 | } |
5d1634d7 | 9172 | |
4ce794b7 | 9173 | if (htab->plt != NULL) |
5d1634d7 | 9174 | { |
9f951329 | 9175 | unsigned int indx; |
ad8e1ba5 | 9176 | bfd_vma plt0; |
9f951329 | 9177 | |
721956f4 | 9178 | /* Build the .glink plt call stub. */ |
4ce794b7 AM |
9179 | plt0 = (htab->plt->output_section->vma |
9180 | + htab->plt->output_offset | |
9181 | - (htab->glink->output_section->vma | |
9182 | + htab->glink->output_offset | |
ad8e1ba5 AM |
9183 | + GLINK_CALL_STUB_SIZE)); |
9184 | if (plt0 + 0x80008000 > 0xffffffff) | |
721956f4 | 9185 | { |
ad8e1ba5 AM |
9186 | (*_bfd_error_handler) (_(".glink and .plt too far apart")); |
9187 | bfd_set_error (bfd_error_bad_value); | |
9188 | return FALSE; | |
721956f4 | 9189 | } |
721956f4 | 9190 | |
97b639ba AM |
9191 | if (htab->emit_stub_syms) |
9192 | { | |
9193 | struct elf_link_hash_entry *h; | |
9194 | h = elf_link_hash_lookup (&htab->elf, "__glink", TRUE, FALSE, FALSE); | |
9195 | if (h == NULL) | |
9196 | return FALSE; | |
9197 | if (h->root.type == bfd_link_hash_new) | |
9198 | { | |
9199 | h->root.type = bfd_link_hash_defined; | |
9200 | h->root.u.def.section = htab->glink; | |
9201 | h->root.u.def.value = 0; | |
f5385ebf AM |
9202 | h->ref_regular = 1; |
9203 | h->def_regular = 1; | |
9204 | h->ref_regular_nonweak = 1; | |
9205 | h->forced_local = 1; | |
9206 | h->non_elf = 0; | |
97b639ba AM |
9207 | } |
9208 | } | |
4ce794b7 AM |
9209 | p = htab->glink->contents; |
9210 | bfd_put_32 (htab->glink->owner, MFCTR_R12, p); | |
ad8e1ba5 | 9211 | p += 4; |
4ce794b7 | 9212 | bfd_put_32 (htab->glink->owner, SLDI_R11_R0_3, p); |
ad8e1ba5 | 9213 | p += 4; |
4ce794b7 | 9214 | bfd_put_32 (htab->glink->owner, ADDIC_R2_R0_32K, p); |
ad8e1ba5 | 9215 | p += 4; |
4ce794b7 | 9216 | bfd_put_32 (htab->glink->owner, SUB_R12_R12_R11, p); |
ad8e1ba5 | 9217 | p += 4; |
4ce794b7 | 9218 | bfd_put_32 (htab->glink->owner, SRADI_R2_R2_63, p); |
ad8e1ba5 | 9219 | p += 4; |
4ce794b7 | 9220 | bfd_put_32 (htab->glink->owner, SLDI_R11_R0_2, p); |
ad8e1ba5 | 9221 | p += 4; |
4ce794b7 | 9222 | bfd_put_32 (htab->glink->owner, AND_R2_R2_R11, p); |
ad8e1ba5 | 9223 | p += 4; |
4ce794b7 | 9224 | bfd_put_32 (htab->glink->owner, SUB_R12_R12_R11, p); |
ad8e1ba5 | 9225 | p += 4; |
4ce794b7 | 9226 | bfd_put_32 (htab->glink->owner, ADD_R12_R12_R2, p); |
ad8e1ba5 | 9227 | p += 4; |
4ce794b7 | 9228 | bfd_put_32 (htab->glink->owner, ADDIS_R12_R12 | PPC_HA (plt0), p); |
ad8e1ba5 | 9229 | p += 4; |
4ce794b7 | 9230 | bfd_put_32 (htab->glink->owner, LD_R11_0R12 | PPC_LO (plt0), p); |
ad8e1ba5 | 9231 | p += 4; |
4ce794b7 | 9232 | bfd_put_32 (htab->glink->owner, ADDI_R12_R12 | PPC_LO (plt0), p); |
ad8e1ba5 | 9233 | p += 4; |
4ce794b7 | 9234 | bfd_put_32 (htab->glink->owner, LD_R2_0R12 | 8, p); |
ad8e1ba5 | 9235 | p += 4; |
4ce794b7 | 9236 | bfd_put_32 (htab->glink->owner, MTCTR_R11, p); |
ad8e1ba5 | 9237 | p += 4; |
4ce794b7 | 9238 | bfd_put_32 (htab->glink->owner, LD_R11_0R12 | 16, p); |
ad8e1ba5 | 9239 | p += 4; |
4ce794b7 | 9240 | bfd_put_32 (htab->glink->owner, BCTR, p); |
ad8e1ba5 AM |
9241 | p += 4; |
9242 | ||
9f951329 AM |
9243 | /* Build the .glink lazy link call stubs. */ |
9244 | indx = 0; | |
eea6121a | 9245 | while (p < htab->glink->contents + htab->glink->size) |
9f951329 AM |
9246 | { |
9247 | if (indx < 0x8000) | |
9248 | { | |
4ce794b7 | 9249 | bfd_put_32 (htab->glink->owner, LI_R0_0 | indx, p); |
9f951329 AM |
9250 | p += 4; |
9251 | } | |
9252 | else | |
9253 | { | |
4ce794b7 | 9254 | bfd_put_32 (htab->glink->owner, LIS_R0_0 | PPC_HI (indx), p); |
9f951329 | 9255 | p += 4; |
4ce794b7 | 9256 | bfd_put_32 (htab->glink->owner, ORI_R0_R0_0 | PPC_LO (indx), p); |
9f951329 AM |
9257 | p += 4; |
9258 | } | |
4ce794b7 AM |
9259 | bfd_put_32 (htab->glink->owner, |
9260 | B_DOT | ((htab->glink->contents - p) & 0x3fffffc), p); | |
a16d5acb | 9261 | indx++; |
9f951329 AM |
9262 | p += 4; |
9263 | } | |
eea6121a | 9264 | htab->glink->rawsize = p - htab->glink->contents; |
5d1634d7 | 9265 | } |
5d1634d7 | 9266 | |
eea6121a | 9267 | if (htab->brlt->size != 0) |
721956f4 | 9268 | { |
4ce794b7 | 9269 | htab->brlt->contents = bfd_zalloc (htab->brlt->owner, |
eea6121a | 9270 | htab->brlt->size); |
4ce794b7 | 9271 | if (htab->brlt->contents == NULL) |
b34976b6 | 9272 | return FALSE; |
721956f4 | 9273 | } |
ee75fd95 | 9274 | if (htab->relbrlt != NULL && htab->relbrlt->size != 0) |
63bc6f6c AM |
9275 | { |
9276 | htab->relbrlt->contents = bfd_zalloc (htab->relbrlt->owner, | |
eea6121a | 9277 | htab->relbrlt->size); |
63bc6f6c AM |
9278 | if (htab->relbrlt->contents == NULL) |
9279 | return FALSE; | |
9280 | } | |
5d1634d7 | 9281 | |
721956f4 AM |
9282 | /* Build the stubs as directed by the stub hash table. */ |
9283 | bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info); | |
5d1634d7 | 9284 | |
721956f4 AM |
9285 | for (stub_sec = htab->stub_bfd->sections; |
9286 | stub_sec != NULL; | |
9287 | stub_sec = stub_sec->next) | |
e717da7e AM |
9288 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) |
9289 | { | |
9290 | stub_sec_count += 1; | |
eea6121a | 9291 | if (stub_sec->rawsize != stub_sec->size) |
e717da7e AM |
9292 | break; |
9293 | } | |
5d1634d7 | 9294 | |
721956f4 | 9295 | if (stub_sec != NULL |
eea6121a | 9296 | || htab->glink->rawsize != htab->glink->size) |
5d1634d7 | 9297 | { |
b34976b6 | 9298 | htab->stub_error = TRUE; |
721956f4 | 9299 | (*_bfd_error_handler) (_("stubs don't match calculated size")); |
5d1634d7 | 9300 | } |
721956f4 | 9301 | |
d2a300cf AM |
9302 | if (htab->stub_error) |
9303 | return FALSE; | |
9304 | ||
9305 | if (stats != NULL) | |
9306 | { | |
9307 | *stats = bfd_malloc (500); | |
9308 | if (*stats == NULL) | |
9309 | return FALSE; | |
9310 | ||
ee75fd95 | 9311 | sprintf (*stats, _("linker stubs in %u group%s\n" |
d2a300cf AM |
9312 | " branch %lu\n" |
9313 | " toc adjust %lu\n" | |
9314 | " long branch %lu\n" | |
9315 | " long toc adj %lu\n" | |
9316 | " plt call %lu"), | |
e717da7e | 9317 | stub_sec_count, |
ee75fd95 | 9318 | stub_sec_count == 1 ? "" : "s", |
4ce794b7 AM |
9319 | htab->stub_count[ppc_stub_long_branch - 1], |
9320 | htab->stub_count[ppc_stub_long_branch_r2off - 1], | |
9321 | htab->stub_count[ppc_stub_plt_branch - 1], | |
9322 | htab->stub_count[ppc_stub_plt_branch_r2off - 1], | |
9323 | htab->stub_count[ppc_stub_plt_call - 1]); | |
d2a300cf AM |
9324 | } |
9325 | return TRUE; | |
5bd4f169 AM |
9326 | } |
9327 | ||
99877b66 AM |
9328 | /* This function undoes the changes made by add_symbol_adjust. */ |
9329 | ||
9330 | static bfd_boolean | |
9331 | undo_symbol_twiddle (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED) | |
9332 | { | |
9333 | struct ppc_link_hash_entry *eh; | |
9334 | ||
9335 | if (h->root.type == bfd_link_hash_indirect) | |
9336 | return TRUE; | |
9337 | ||
9338 | if (h->root.type == bfd_link_hash_warning) | |
9339 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
9340 | ||
9341 | eh = (struct ppc_link_hash_entry *) h; | |
9342 | if (eh->elf.root.type != bfd_link_hash_undefweak || !eh->was_undefined) | |
9343 | return TRUE; | |
9344 | ||
9345 | eh->elf.root.type = bfd_link_hash_undefined; | |
9346 | return TRUE; | |
9347 | } | |
9348 | ||
9349 | void | |
9350 | ppc64_elf_restore_symbols (struct bfd_link_info *info) | |
9351 | { | |
9352 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
9353 | elf_link_hash_traverse (&htab->elf, undo_symbol_twiddle, info); | |
9354 | } | |
9355 | ||
5bd4f169 AM |
9356 | /* The RELOCATE_SECTION function is called by the ELF backend linker |
9357 | to handle the relocations for a section. | |
9358 | ||
9359 | The relocs are always passed as Rela structures; if the section | |
9360 | actually uses Rel structures, the r_addend field will always be | |
9361 | zero. | |
9362 | ||
9363 | This function is responsible for adjust the section contents as | |
9364 | necessary, and (if using Rela relocs and generating a | |
1049f94e | 9365 | relocatable output file) adjusting the reloc addend as |
5bd4f169 AM |
9366 | necessary. |
9367 | ||
9368 | This function does not have to worry about setting the reloc | |
9369 | address or the reloc symbol index. | |
9370 | ||
9371 | LOCAL_SYMS is a pointer to the swapped in local symbols. | |
9372 | ||
9373 | LOCAL_SECTIONS is an array giving the section in the input file | |
9374 | corresponding to the st_shndx field of each local symbol. | |
9375 | ||
9376 | The global hash table entry for the global symbols can be found | |
9377 | via elf_sym_hashes (input_bfd). | |
9378 | ||
1049f94e | 9379 | When generating relocatable output, this function must handle |
5bd4f169 AM |
9380 | STB_LOCAL/STT_SECTION symbols specially. The output symbol is |
9381 | going to be the section symbol corresponding to the output | |
9382 | section, which means that the addend must be adjusted | |
9383 | accordingly. */ | |
9384 | ||
b34976b6 | 9385 | static bfd_boolean |
4ce794b7 AM |
9386 | ppc64_elf_relocate_section (bfd *output_bfd, |
9387 | struct bfd_link_info *info, | |
9388 | bfd *input_bfd, | |
9389 | asection *input_section, | |
9390 | bfd_byte *contents, | |
9391 | Elf_Internal_Rela *relocs, | |
9392 | Elf_Internal_Sym *local_syms, | |
9393 | asection **local_sections) | |
5bd4f169 | 9394 | { |
65f38f15 | 9395 | struct ppc_link_hash_table *htab; |
5bd4f169 AM |
9396 | Elf_Internal_Shdr *symtab_hdr; |
9397 | struct elf_link_hash_entry **sym_hashes; | |
5bd4f169 AM |
9398 | Elf_Internal_Rela *rel; |
9399 | Elf_Internal_Rela *relend; | |
411e1bfb AM |
9400 | Elf_Internal_Rela outrel; |
9401 | bfd_byte *loc; | |
411e1bfb | 9402 | struct got_entry **local_got_ents; |
5bd4f169 | 9403 | bfd_vma TOCstart; |
b34976b6 AM |
9404 | bfd_boolean ret = TRUE; |
9405 | bfd_boolean is_opd; | |
96e0dda4 | 9406 | /* Disabled until we sort out how ld should choose 'y' vs 'at'. */ |
b34976b6 | 9407 | bfd_boolean is_power4 = FALSE; |
5bd4f169 | 9408 | |
1049f94e | 9409 | if (info->relocatable) |
b34976b6 | 9410 | return TRUE; |
b491616a | 9411 | |
65f38f15 | 9412 | /* Initialize howto table if needed. */ |
5bd4f169 | 9413 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) |
5bd4f169 AM |
9414 | ppc_howto_init (); |
9415 | ||
65f38f15 | 9416 | htab = ppc_hash_table (info); |
ee75fd95 AM |
9417 | |
9418 | /* Don't relocate stub sections. */ | |
9419 | if (input_section->owner == htab->stub_bfd) | |
9420 | return TRUE; | |
9421 | ||
411e1bfb | 9422 | local_got_ents = elf_local_got_ents (input_bfd); |
5bd4f169 | 9423 | TOCstart = elf_gp (output_bfd); |
5bd4f169 AM |
9424 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; |
9425 | sym_hashes = elf_sym_hashes (input_bfd); | |
f0abc2a1 | 9426 | is_opd = ppc64_elf_section_data (input_section)->opd.adjust != NULL; |
65f38f15 | 9427 | |
5bd4f169 AM |
9428 | rel = relocs; |
9429 | relend = relocs + input_section->reloc_count; | |
9430 | for (; rel < relend; rel++) | |
9431 | { | |
04c9666a | 9432 | enum elf_ppc64_reloc_type r_type; |
5bd4f169 AM |
9433 | bfd_vma addend; |
9434 | bfd_reloc_status_type r; | |
9435 | Elf_Internal_Sym *sym; | |
9436 | asection *sec; | |
039b3fef AM |
9437 | struct elf_link_hash_entry *h_elf; |
9438 | struct ppc_link_hash_entry *h; | |
9439 | struct ppc_link_hash_entry *fdh; | |
5bd4f169 | 9440 | const char *sym_name; |
0d4792f7 | 9441 | unsigned long r_symndx, toc_symndx; |
951fd09b | 9442 | char tls_mask, tls_gd, tls_type; |
0d4792f7 | 9443 | char sym_type; |
5bd4f169 | 9444 | bfd_vma relocation; |
b34976b6 AM |
9445 | bfd_boolean unresolved_reloc; |
9446 | bfd_boolean warned; | |
50bc7936 | 9447 | unsigned long insn, mask; |
721956f4 AM |
9448 | struct ppc_stub_hash_entry *stub_entry; |
9449 | bfd_vma max_br_offset; | |
9450 | bfd_vma from; | |
5bd4f169 | 9451 | |
4ce794b7 | 9452 | r_type = ELF64_R_TYPE (rel->r_info); |
5bd4f169 | 9453 | r_symndx = ELF64_R_SYM (rel->r_info); |
ee87f2da AM |
9454 | |
9455 | /* For old style R_PPC64_TOC relocs with a zero symbol, use the | |
9456 | symbol of the previous ADDR64 reloc. The symbol gives us the | |
9457 | proper TOC base to use. */ | |
9458 | if (rel->r_info == ELF64_R_INFO (0, R_PPC64_TOC) | |
9459 | && rel != relocs | |
9460 | && ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_ADDR64 | |
9461 | && is_opd) | |
9462 | r_symndx = ELF64_R_SYM (rel[-1].r_info); | |
9463 | ||
4ce794b7 AM |
9464 | sym = NULL; |
9465 | sec = NULL; | |
039b3fef | 9466 | h_elf = NULL; |
4ce794b7 | 9467 | sym_name = NULL; |
b34976b6 AM |
9468 | unresolved_reloc = FALSE; |
9469 | warned = FALSE; | |
65f38f15 | 9470 | |
0b13192e | 9471 | if (r_symndx < symtab_hdr->sh_info) |
5bd4f169 AM |
9472 | { |
9473 | /* It's a local symbol. */ | |
4025353c AM |
9474 | long *opd_adjust; |
9475 | ||
5bd4f169 AM |
9476 | sym = local_syms + r_symndx; |
9477 | sec = local_sections[r_symndx]; | |
26c61ae5 | 9478 | sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec); |
0d4792f7 | 9479 | sym_type = ELF64_ST_TYPE (sym->st_info); |
8517fae7 | 9480 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); |
4025353c AM |
9481 | opd_adjust = get_opd_info (sec); |
9482 | if (opd_adjust != NULL) | |
1e2f5b6e | 9483 | { |
3f764659 | 9484 | long adjust = opd_adjust[(sym->st_value + rel->r_addend) / 8]; |
4025353c AM |
9485 | if (adjust == -1) |
9486 | relocation = 0; | |
9487 | else | |
9488 | relocation += adjust; | |
1e2f5b6e | 9489 | } |
5bd4f169 AM |
9490 | } |
9491 | else | |
9492 | { | |
b2a8e766 AM |
9493 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
9494 | r_symndx, symtab_hdr, sym_hashes, | |
039b3fef | 9495 | h_elf, sec, relocation, |
b2a8e766 | 9496 | unresolved_reloc, warned); |
039b3fef AM |
9497 | sym_name = h_elf->root.root.string; |
9498 | sym_type = h_elf->type; | |
5bd4f169 | 9499 | } |
039b3fef | 9500 | h = (struct ppc_link_hash_entry *) h_elf; |
5bd4f169 | 9501 | |
951fd09b AM |
9502 | /* TLS optimizations. Replace instruction sequences and relocs |
9503 | based on information we collected in tls_optimize. We edit | |
9504 | RELOCS so that --emit-relocs will output something sensible | |
9505 | for the final instruction stream. */ | |
9506 | tls_mask = 0; | |
9507 | tls_gd = 0; | |
0d4792f7 | 9508 | toc_symndx = 0; |
d881513a | 9509 | if (IS_PPC64_TLS_RELOC (r_type)) |
411e1bfb AM |
9510 | { |
9511 | if (h != NULL) | |
039b3fef | 9512 | tls_mask = h->tls_mask; |
411e1bfb AM |
9513 | else if (local_got_ents != NULL) |
9514 | { | |
e7b938ca AM |
9515 | char *lgot_masks; |
9516 | lgot_masks = (char *) (local_got_ents + symtab_hdr->sh_info); | |
9517 | tls_mask = lgot_masks[r_symndx]; | |
411e1bfb | 9518 | } |
0d4792f7 AM |
9519 | if (tls_mask == 0 && r_type == R_PPC64_TLS) |
9520 | { | |
9521 | /* Check for toc tls entries. */ | |
9522 | char *toc_tls; | |
9523 | ||
9524 | if (!get_tls_mask (&toc_tls, &toc_symndx, &local_syms, | |
9525 | rel, input_bfd)) | |
9526 | return FALSE; | |
9527 | ||
9528 | if (toc_tls) | |
9529 | tls_mask = *toc_tls; | |
9530 | } | |
9531 | } | |
9532 | ||
9533 | /* Check that tls relocs are used with tls syms, and non-tls | |
9534 | relocs are used with non-tls syms. */ | |
9535 | if (r_symndx != 0 | |
9536 | && r_type != R_PPC64_NONE | |
9537 | && (h == NULL | |
039b3fef AM |
9538 | || h->elf.root.type == bfd_link_hash_defined |
9539 | || h->elf.root.type == bfd_link_hash_defweak) | |
0d4792f7 AM |
9540 | && IS_PPC64_TLS_RELOC (r_type) != (sym_type == STT_TLS)) |
9541 | { | |
9542 | if (r_type == R_PPC64_TLS && tls_mask != 0) | |
9543 | /* R_PPC64_TLS is OK against a symbol in the TOC. */ | |
9544 | ; | |
9545 | else | |
9546 | (*_bfd_error_handler) | |
9547 | (sym_type == STT_TLS | |
d003868e AM |
9548 | ? _("%B(%A+0x%lx): %s used with TLS symbol %s") |
9549 | : _("%B(%A+0x%lx): %s used with non-TLS symbol %s"), | |
9550 | input_bfd, | |
9551 | input_section, | |
0d4792f7 AM |
9552 | (long) rel->r_offset, |
9553 | ppc64_elf_howto_table[r_type]->name, | |
9554 | sym_name); | |
411e1bfb AM |
9555 | } |
9556 | ||
9557 | /* Ensure reloc mapping code below stays sane. */ | |
9558 | if (R_PPC64_TOC16_LO_DS != R_PPC64_TOC16_DS + 1 | |
9559 | || R_PPC64_TOC16_LO != R_PPC64_TOC16 + 1 | |
9560 | || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TLSGD16 & 3) | |
9561 | || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TLSGD16_LO & 3) | |
9562 | || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TLSGD16_HI & 3) | |
9563 | || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TLSGD16_HA & 3) | |
9564 | || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TPREL16_DS & 3) | |
9565 | || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TPREL16_LO_DS & 3) | |
9566 | || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TPREL16_HI & 3) | |
9567 | || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TPREL16_HA & 3)) | |
9568 | abort (); | |
0d4792f7 | 9569 | |
411e1bfb AM |
9570 | switch (r_type) |
9571 | { | |
9572 | default: | |
411e1bfb AM |
9573 | break; |
9574 | ||
9575 | case R_PPC64_TOC16: | |
9576 | case R_PPC64_TOC16_LO: | |
9577 | case R_PPC64_TOC16_DS: | |
9578 | case R_PPC64_TOC16_LO_DS: | |
411e1bfb AM |
9579 | { |
9580 | /* Check for toc tls entries. */ | |
9581 | char *toc_tls; | |
951fd09b | 9582 | int retval; |
411e1bfb | 9583 | |
0d4792f7 AM |
9584 | retval = get_tls_mask (&toc_tls, &toc_symndx, &local_syms, |
9585 | rel, input_bfd); | |
951fd09b | 9586 | if (retval == 0) |
411e1bfb AM |
9587 | return FALSE; |
9588 | ||
9589 | if (toc_tls) | |
9590 | { | |
951fd09b | 9591 | tls_mask = *toc_tls; |
411e1bfb AM |
9592 | if (r_type == R_PPC64_TOC16_DS |
9593 | || r_type == R_PPC64_TOC16_LO_DS) | |
81407a69 AM |
9594 | { |
9595 | if (tls_mask != 0 | |
9596 | && (tls_mask & (TLS_DTPREL | TLS_TPREL)) == 0) | |
9597 | goto toctprel; | |
9598 | } | |
411e1bfb | 9599 | else |
951fd09b AM |
9600 | { |
9601 | /* If we found a GD reloc pair, then we might be | |
9602 | doing a GD->IE transition. */ | |
9603 | if (retval == 2) | |
9604 | { | |
9605 | tls_gd = TLS_TPRELGD; | |
9606 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
9607 | goto tls_get_addr_check; | |
9608 | } | |
9609 | else if (retval == 3) | |
9610 | { | |
9611 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) | |
9612 | goto tls_get_addr_check; | |
9613 | } | |
9614 | } | |
411e1bfb AM |
9615 | } |
9616 | } | |
9617 | break; | |
9618 | ||
9619 | case R_PPC64_GOT_TPREL16_DS: | |
9620 | case R_PPC64_GOT_TPREL16_LO_DS: | |
951fd09b AM |
9621 | if (tls_mask != 0 |
9622 | && (tls_mask & TLS_TPREL) == 0) | |
411e1bfb | 9623 | { |
81407a69 | 9624 | toctprel: |
411e1bfb AM |
9625 | insn = bfd_get_32 (output_bfd, contents + rel->r_offset - 2); |
9626 | insn &= 31 << 21; | |
9627 | insn |= 0x3c0d0000; /* addis 0,13,0 */ | |
9628 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset - 2); | |
9629 | r_type = R_PPC64_TPREL16_HA; | |
0d4792f7 AM |
9630 | if (toc_symndx != 0) |
9631 | { | |
9632 | rel->r_info = ELF64_R_INFO (toc_symndx, r_type); | |
9633 | /* We changed the symbol. Start over in order to | |
9634 | get h, sym, sec etc. right. */ | |
9635 | rel--; | |
9636 | continue; | |
9637 | } | |
9638 | else | |
9639 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
411e1bfb AM |
9640 | } |
9641 | break; | |
9642 | ||
9643 | case R_PPC64_TLS: | |
951fd09b AM |
9644 | if (tls_mask != 0 |
9645 | && (tls_mask & TLS_TPREL) == 0) | |
411e1bfb | 9646 | { |
50bc7936 | 9647 | bfd_vma rtra; |
411e1bfb | 9648 | insn = bfd_get_32 (output_bfd, contents + rel->r_offset); |
772119ce | 9649 | if ((insn & ((0x3f << 26) | (31 << 11))) |
411e1bfb AM |
9650 | == ((31 << 26) | (13 << 11))) |
9651 | rtra = insn & ((1 << 26) - (1 << 16)); | |
772119ce | 9652 | else if ((insn & ((0x3f << 26) | (31 << 16))) |
411e1bfb AM |
9653 | == ((31 << 26) | (13 << 16))) |
9654 | rtra = (insn & (31 << 21)) | ((insn & (31 << 11)) << 5); | |
9655 | else | |
9656 | abort (); | |
9657 | if ((insn & ((1 << 11) - (1 << 1))) == 266 << 1) | |
9658 | /* add -> addi. */ | |
9659 | insn = 14 << 26; | |
9660 | else if ((insn & (31 << 1)) == 23 << 1 | |
9661 | && ((insn & (31 << 6)) < 14 << 6 | |
9662 | || ((insn & (31 << 6)) >= 16 << 6 | |
9663 | && (insn & (31 << 6)) < 24 << 6))) | |
9664 | /* load and store indexed -> dform. */ | |
9665 | insn = (32 | ((insn >> 6) & 31)) << 26; | |
9666 | else if ((insn & (31 << 1)) == 21 << 1 | |
9667 | && (insn & (0x1a << 6)) == 0) | |
9668 | /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */ | |
9669 | insn = (((58 | ((insn >> 6) & 4)) << 26) | |
9670 | | ((insn >> 6) & 1)); | |
9671 | else if ((insn & (31 << 1)) == 21 << 1 | |
9672 | && (insn & ((1 << 11) - (1 << 1))) == 341 << 1) | |
9673 | /* lwax -> lwa. */ | |
9674 | insn = (58 << 26) | 2; | |
9675 | else | |
9676 | abort (); | |
9677 | insn |= rtra; | |
9678 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset); | |
411e1bfb AM |
9679 | /* Was PPC64_TLS which sits on insn boundary, now |
9680 | PPC64_TPREL16_LO which is at insn+2. */ | |
9681 | rel->r_offset += 2; | |
0d4792f7 AM |
9682 | r_type = R_PPC64_TPREL16_LO; |
9683 | if (toc_symndx != 0) | |
9684 | { | |
9685 | rel->r_info = ELF64_R_INFO (toc_symndx, r_type); | |
9686 | /* We changed the symbol. Start over in order to | |
9687 | get h, sym, sec etc. right. */ | |
9688 | rel--; | |
9689 | continue; | |
9690 | } | |
9691 | else | |
9692 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
411e1bfb AM |
9693 | } |
9694 | break; | |
9695 | ||
411e1bfb AM |
9696 | case R_PPC64_GOT_TLSGD16_HI: |
9697 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b AM |
9698 | tls_gd = TLS_TPRELGD; |
9699 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
9700 | goto tls_gdld_hi; | |
9701 | break; | |
9702 | ||
411e1bfb AM |
9703 | case R_PPC64_GOT_TLSLD16_HI: |
9704 | case R_PPC64_GOT_TLSLD16_HA: | |
951fd09b | 9705 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) |
411e1bfb | 9706 | { |
951fd09b AM |
9707 | tls_gdld_hi: |
9708 | if ((tls_mask & tls_gd) != 0) | |
9709 | r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3) | |
9710 | + R_PPC64_GOT_TPREL16_DS); | |
9711 | else | |
411e1bfb | 9712 | { |
951fd09b AM |
9713 | bfd_put_32 (output_bfd, NOP, contents + rel->r_offset); |
9714 | rel->r_offset -= 2; | |
9715 | r_type = R_PPC64_NONE; | |
411e1bfb | 9716 | } |
951fd09b | 9717 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); |
411e1bfb AM |
9718 | } |
9719 | break; | |
9720 | ||
951fd09b AM |
9721 | case R_PPC64_GOT_TLSGD16: |
9722 | case R_PPC64_GOT_TLSGD16_LO: | |
9723 | tls_gd = TLS_TPRELGD; | |
9724 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
9725 | goto tls_get_addr_check; | |
9726 | break; | |
411e1bfb | 9727 | |
951fd09b AM |
9728 | case R_PPC64_GOT_TLSLD16: |
9729 | case R_PPC64_GOT_TLSLD16_LO: | |
9730 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) | |
9731 | { | |
9732 | tls_get_addr_check: | |
9733 | if (rel + 1 < relend) | |
411e1bfb | 9734 | { |
951fd09b AM |
9735 | enum elf_ppc64_reloc_type r_type2; |
9736 | unsigned long r_symndx2; | |
9737 | struct elf_link_hash_entry *h2; | |
9738 | bfd_vma insn1, insn2, insn3; | |
9739 | bfd_vma offset; | |
9740 | ||
9741 | /* The next instruction should be a call to | |
9742 | __tls_get_addr. Peek at the reloc to be sure. */ | |
4ce794b7 | 9743 | r_type2 = ELF64_R_TYPE (rel[1].r_info); |
951fd09b AM |
9744 | r_symndx2 = ELF64_R_SYM (rel[1].r_info); |
9745 | if (r_symndx2 < symtab_hdr->sh_info | |
9746 | || (r_type2 != R_PPC64_REL14 | |
9747 | && r_type2 != R_PPC64_REL14_BRTAKEN | |
9748 | && r_type2 != R_PPC64_REL14_BRNTAKEN | |
9749 | && r_type2 != R_PPC64_REL24)) | |
9750 | break; | |
9751 | ||
9752 | h2 = sym_hashes[r_symndx2 - symtab_hdr->sh_info]; | |
9753 | while (h2->root.type == bfd_link_hash_indirect | |
9754 | || h2->root.type == bfd_link_hash_warning) | |
9755 | h2 = (struct elf_link_hash_entry *) h2->root.u.i.link; | |
8387904d AM |
9756 | if (h2 == NULL || (h2 != &htab->tls_get_addr->elf |
9757 | && h2 != &htab->tls_get_addr_fd->elf)) | |
951fd09b AM |
9758 | break; |
9759 | ||
9760 | /* OK, it checks out. Replace the call. */ | |
9761 | offset = rel[1].r_offset; | |
9762 | insn1 = bfd_get_32 (output_bfd, | |
9763 | contents + rel->r_offset - 2); | |
9764 | insn3 = bfd_get_32 (output_bfd, | |
9765 | contents + offset + 4); | |
9766 | if ((tls_mask & tls_gd) != 0) | |
411e1bfb | 9767 | { |
951fd09b AM |
9768 | /* IE */ |
9769 | insn1 &= (1 << 26) - (1 << 2); | |
9770 | insn1 |= 58 << 26; /* ld */ | |
9771 | insn2 = 0x7c636a14; /* add 3,3,13 */ | |
9772 | rel[1].r_info = ELF64_R_INFO (r_symndx2, R_PPC64_NONE); | |
9773 | if ((tls_mask & TLS_EXPLICIT) == 0) | |
9774 | r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3) | |
9775 | + R_PPC64_GOT_TPREL16_DS); | |
9776 | else | |
9777 | r_type += R_PPC64_TOC16_DS - R_PPC64_TOC16; | |
9778 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
411e1bfb AM |
9779 | } |
9780 | else | |
951fd09b AM |
9781 | { |
9782 | /* LE */ | |
9783 | insn1 = 0x3c6d0000; /* addis 3,13,0 */ | |
9784 | insn2 = 0x38630000; /* addi 3,3,0 */ | |
9785 | if (tls_gd == 0) | |
9786 | { | |
9787 | /* Was an LD reloc. */ | |
9788 | r_symndx = 0; | |
e1918d23 AM |
9789 | rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; |
9790 | rel[1].r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; | |
951fd09b | 9791 | } |
0d4792f7 AM |
9792 | else if (toc_symndx != 0) |
9793 | r_symndx = toc_symndx; | |
951fd09b AM |
9794 | r_type = R_PPC64_TPREL16_HA; |
9795 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
9796 | rel[1].r_info = ELF64_R_INFO (r_symndx, | |
9797 | R_PPC64_TPREL16_LO); | |
9798 | rel[1].r_offset += 2; | |
9799 | } | |
9800 | if (insn3 == NOP | |
9801 | || insn3 == CROR_151515 || insn3 == CROR_313131) | |
9802 | { | |
9803 | insn3 = insn2; | |
9804 | insn2 = NOP; | |
9805 | rel[1].r_offset += 4; | |
9806 | } | |
9807 | bfd_put_32 (output_bfd, insn1, contents + rel->r_offset - 2); | |
9808 | bfd_put_32 (output_bfd, insn2, contents + offset); | |
9809 | bfd_put_32 (output_bfd, insn3, contents + offset + 4); | |
0d4792f7 | 9810 | if (tls_gd == 0 || toc_symndx != 0) |
951fd09b | 9811 | { |
0d4792f7 AM |
9812 | /* We changed the symbol. Start over in order |
9813 | to get h, sym, sec etc. right. */ | |
951fd09b AM |
9814 | rel--; |
9815 | continue; | |
9816 | } | |
411e1bfb | 9817 | } |
411e1bfb | 9818 | } |
411e1bfb AM |
9819 | break; |
9820 | ||
9821 | case R_PPC64_DTPMOD64: | |
951fd09b AM |
9822 | if (rel + 1 < relend |
9823 | && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64) | |
9824 | && rel[1].r_offset == rel->r_offset + 8) | |
411e1bfb | 9825 | { |
951fd09b AM |
9826 | if ((tls_mask & TLS_GD) == 0) |
9827 | { | |
9828 | rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_NONE); | |
9829 | if ((tls_mask & TLS_TPRELGD) != 0) | |
9830 | r_type = R_PPC64_TPREL64; | |
9831 | else | |
9832 | { | |
4ce794b7 | 9833 | bfd_put_64 (output_bfd, 1, contents + rel->r_offset); |
951fd09b AM |
9834 | r_type = R_PPC64_NONE; |
9835 | } | |
9836 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
9837 | } | |
9838 | } | |
9839 | else | |
9840 | { | |
9841 | if ((tls_mask & TLS_LD) == 0) | |
411e1bfb | 9842 | { |
4ce794b7 | 9843 | bfd_put_64 (output_bfd, 1, contents + rel->r_offset); |
411e1bfb | 9844 | r_type = R_PPC64_NONE; |
951fd09b | 9845 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); |
411e1bfb | 9846 | } |
411e1bfb AM |
9847 | } |
9848 | break; | |
9849 | ||
9850 | case R_PPC64_TPREL64: | |
951fd09b | 9851 | if ((tls_mask & TLS_TPREL) == 0) |
411e1bfb AM |
9852 | { |
9853 | r_type = R_PPC64_NONE; | |
9854 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
9855 | } | |
9856 | break; | |
9857 | } | |
9858 | ||
9859 | /* Handle other relocations that tweak non-addend part of insn. */ | |
86c76c7b | 9860 | insn = 0; |
b25116a9 AM |
9861 | max_br_offset = 1 << 25; |
9862 | addend = rel->r_addend; | |
65f38f15 | 9863 | switch (r_type) |
5bd4f169 AM |
9864 | { |
9865 | default: | |
65f38f15 | 9866 | break; |
5bd4f169 | 9867 | |
65f38f15 AM |
9868 | /* Branch taken prediction relocations. */ |
9869 | case R_PPC64_ADDR14_BRTAKEN: | |
9870 | case R_PPC64_REL14_BRTAKEN: | |
cedb70c5 KH |
9871 | insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */ |
9872 | /* Fall thru. */ | |
65f38f15 | 9873 | |
86c76c7b | 9874 | /* Branch not taken prediction relocations. */ |
65f38f15 AM |
9875 | case R_PPC64_ADDR14_BRNTAKEN: |
9876 | case R_PPC64_REL14_BRNTAKEN: | |
411e1bfb AM |
9877 | insn |= bfd_get_32 (output_bfd, |
9878 | contents + rel->r_offset) & ~(0x01 << 21); | |
b25116a9 | 9879 | /* Fall thru. */ |
86c76c7b | 9880 | |
b25116a9 AM |
9881 | case R_PPC64_REL14: |
9882 | max_br_offset = 1 << 15; | |
9883 | /* Fall thru. */ | |
5bd4f169 | 9884 | |
65f38f15 | 9885 | case R_PPC64_REL24: |
ad8e1ba5 AM |
9886 | /* Calls to functions with a different TOC, such as calls to |
9887 | shared objects, need to alter the TOC pointer. This is | |
9888 | done using a linkage stub. A REL24 branching to these | |
9889 | linkage stubs needs to be followed by a nop, as the nop | |
9890 | will be replaced with an instruction to restore the TOC | |
9891 | base pointer. */ | |
b25116a9 | 9892 | stub_entry = NULL; |
8387904d | 9893 | fdh = h; |
ad8e1ba5 | 9894 | if (((h != NULL |
039b3fef AM |
9895 | && (((fdh = h->oh) != NULL |
9896 | && fdh->elf.plt.plist != NULL) | |
9897 | || (fdh = h)->elf.plt.plist != NULL)) | |
8387904d | 9898 | || (sec != NULL |
ad8e1ba5 | 9899 | && sec->output_section != NULL |
b25116a9 | 9900 | && sec->id <= htab->top_id |
ad8e1ba5 AM |
9901 | && (htab->stub_group[sec->id].toc_off |
9902 | != htab->stub_group[input_section->id].toc_off))) | |
721956f4 | 9903 | && (stub_entry = ppc_get_stub_entry (input_section, sec, fdh, |
ad8e1ba5 AM |
9904 | rel, htab)) != NULL |
9905 | && (stub_entry->stub_type == ppc_stub_plt_call | |
9906 | || stub_entry->stub_type == ppc_stub_plt_branch_r2off | |
9907 | || stub_entry->stub_type == ppc_stub_long_branch_r2off)) | |
41bd81ab | 9908 | { |
b25116a9 | 9909 | bfd_boolean can_plt_call = FALSE; |
721956f4 | 9910 | |
eea6121a | 9911 | if (rel->r_offset + 8 <= input_section->size) |
41bd81ab | 9912 | { |
b25116a9 AM |
9913 | unsigned long nop; |
9914 | nop = bfd_get_32 (input_bfd, contents + rel->r_offset + 4); | |
9915 | if (nop == NOP | |
9916 | || nop == CROR_151515 || nop == CROR_313131) | |
41bd81ab | 9917 | { |
4ce794b7 | 9918 | bfd_put_32 (input_bfd, LD_R2_40R1, |
411e1bfb | 9919 | contents + rel->r_offset + 4); |
b25116a9 | 9920 | can_plt_call = TRUE; |
41bd81ab | 9921 | } |
5bd4f169 | 9922 | } |
721956f4 AM |
9923 | |
9924 | if (!can_plt_call) | |
9925 | { | |
ad8e1ba5 AM |
9926 | if (stub_entry->stub_type == ppc_stub_plt_call) |
9927 | { | |
9928 | /* If this is a plain branch rather than a branch | |
9929 | and link, don't require a nop. */ | |
b25116a9 AM |
9930 | unsigned long br; |
9931 | br = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
9932 | if ((br & 1) == 0) | |
9933 | can_plt_call = TRUE; | |
ad8e1ba5 | 9934 | } |
6ab189d5 | 9935 | else if (h != NULL |
039b3fef | 9936 | && strcmp (h->elf.root.root.string, |
6ab189d5 AM |
9937 | ".__libc_start_main") == 0) |
9938 | { | |
9939 | /* Allow crt1 branch to go via a toc adjusting stub. */ | |
b25116a9 | 9940 | can_plt_call = TRUE; |
6ab189d5 | 9941 | } |
ad8e1ba5 AM |
9942 | else |
9943 | { | |
9944 | if (strcmp (input_section->output_section->name, | |
9945 | ".init") == 0 | |
9946 | || strcmp (input_section->output_section->name, | |
9947 | ".fini") == 0) | |
9948 | (*_bfd_error_handler) | |
d003868e | 9949 | (_("%B(%A+0x%lx): automatic multiple TOCs " |
ad8e1ba5 AM |
9950 | "not supported using your crt files; " |
9951 | "recompile with -mminimal-toc or upgrade gcc"), | |
d003868e AM |
9952 | input_bfd, |
9953 | input_section, | |
ad8e1ba5 AM |
9954 | (long) rel->r_offset); |
9955 | else | |
9956 | (*_bfd_error_handler) | |
d003868e | 9957 | (_("%B(%A+0x%lx): sibling call optimization to `%s' " |
ad8e1ba5 AM |
9958 | "does not allow automatic multiple TOCs; " |
9959 | "recompile with -mminimal-toc or " | |
9960 | "-fno-optimize-sibling-calls, " | |
9961 | "or make `%s' extern"), | |
d003868e AM |
9962 | input_bfd, |
9963 | input_section, | |
ad8e1ba5 AM |
9964 | (long) rel->r_offset, |
9965 | sym_name, | |
9966 | sym_name); | |
9967 | bfd_set_error (bfd_error_bad_value); | |
9968 | ret = FALSE; | |
9969 | } | |
721956f4 AM |
9970 | } |
9971 | ||
b25116a9 AM |
9972 | if (can_plt_call |
9973 | && stub_entry->stub_type == ppc_stub_plt_call) | |
9974 | unresolved_reloc = FALSE; | |
9975 | } | |
9976 | ||
8387904d AM |
9977 | if (stub_entry == NULL |
9978 | && get_opd_info (sec) != NULL) | |
9979 | { | |
9980 | /* The branch destination is the value of the opd entry. */ | |
9981 | bfd_vma off = (relocation - sec->output_section->vma | |
9982 | - sec->output_offset + rel->r_addend); | |
9983 | bfd_vma dest = opd_entry_value (sec, off, NULL, NULL); | |
9984 | if (dest != (bfd_vma) -1) | |
9985 | { | |
9986 | relocation = dest; | |
9987 | addend = 0; | |
9988 | } | |
9989 | } | |
9990 | ||
b25116a9 AM |
9991 | /* If the branch is out of reach we ought to have a long |
9992 | branch stub. */ | |
9993 | from = (rel->r_offset | |
9994 | + input_section->output_offset | |
9995 | + input_section->output_section->vma); | |
9996 | ||
9997 | if (stub_entry == NULL | |
9998 | && (relocation + rel->r_addend - from + max_br_offset | |
9999 | >= 2 * max_br_offset) | |
10000 | && r_type != R_PPC64_ADDR14_BRTAKEN | |
10001 | && r_type != R_PPC64_ADDR14_BRNTAKEN) | |
039b3fef AM |
10002 | stub_entry = ppc_get_stub_entry (input_section, sec, h, rel, |
10003 | htab); | |
b25116a9 AM |
10004 | |
10005 | if (stub_entry != NULL) | |
10006 | { | |
10007 | /* Munge up the value and addend so that we call the stub | |
10008 | rather than the procedure directly. */ | |
10009 | relocation = (stub_entry->stub_offset | |
10010 | + stub_entry->stub_sec->output_offset | |
10011 | + stub_entry->stub_sec->output_section->vma); | |
10012 | addend = 0; | |
10013 | } | |
10014 | ||
10015 | if (insn != 0) | |
10016 | { | |
10017 | if (is_power4) | |
721956f4 | 10018 | { |
b25116a9 AM |
10019 | /* Set 'a' bit. This is 0b00010 in BO field for branch |
10020 | on CR(BI) insns (BO == 001at or 011at), and 0b01000 | |
10021 | for branch on CTR insns (BO == 1a00t or 1a01t). */ | |
10022 | if ((insn & (0x14 << 21)) == (0x04 << 21)) | |
10023 | insn |= 0x02 << 21; | |
10024 | else if ((insn & (0x14 << 21)) == (0x10 << 21)) | |
10025 | insn |= 0x08 << 21; | |
10026 | else | |
10027 | break; | |
10028 | } | |
10029 | else | |
10030 | { | |
10031 | /* Invert 'y' bit if not the default. */ | |
10032 | if ((bfd_signed_vma) (relocation + rel->r_addend - from) < 0) | |
10033 | insn ^= 0x01 << 21; | |
721956f4 | 10034 | } |
b25116a9 AM |
10035 | |
10036 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset); | |
5bd4f169 | 10037 | } |
e86ce104 | 10038 | |
06da1e8e AM |
10039 | /* NOP out calls to undefined weak functions. |
10040 | We can thus call a weak function without first | |
10041 | checking whether the function is defined. */ | |
b25116a9 | 10042 | else if (h != NULL |
039b3fef | 10043 | && h->elf.root.type == bfd_link_hash_undefweak |
b25116a9 AM |
10044 | && r_type == R_PPC64_REL24 |
10045 | && relocation == 0 | |
10046 | && rel->r_addend == 0) | |
e86ce104 | 10047 | { |
06da1e8e AM |
10048 | bfd_put_32 (output_bfd, NOP, contents + rel->r_offset); |
10049 | continue; | |
e86ce104 | 10050 | } |
65f38f15 AM |
10051 | break; |
10052 | } | |
5bd4f169 | 10053 | |
65f38f15 | 10054 | /* Set `addend'. */ |
411e1bfb | 10055 | tls_type = 0; |
65f38f15 AM |
10056 | switch (r_type) |
10057 | { | |
10058 | default: | |
10059 | (*_bfd_error_handler) | |
d003868e AM |
10060 | (_("%B: unknown relocation type %d for symbol %s"), |
10061 | input_bfd, (int) r_type, sym_name); | |
5bd4f169 | 10062 | |
65f38f15 | 10063 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 10064 | ret = FALSE; |
65f38f15 | 10065 | continue; |
5bd4f169 | 10066 | |
65f38f15 | 10067 | case R_PPC64_NONE: |
411e1bfb | 10068 | case R_PPC64_TLS: |
04c9666a AM |
10069 | case R_PPC64_GNU_VTINHERIT: |
10070 | case R_PPC64_GNU_VTENTRY: | |
65f38f15 | 10071 | continue; |
5bd4f169 AM |
10072 | |
10073 | /* GOT16 relocations. Like an ADDR16 using the symbol's | |
10074 | address in the GOT as relocation value instead of the | |
411e1bfb | 10075 | symbol's value itself. Also, create a GOT entry for the |
5bd4f169 | 10076 | symbol and put the symbol value there. */ |
411e1bfb AM |
10077 | case R_PPC64_GOT_TLSGD16: |
10078 | case R_PPC64_GOT_TLSGD16_LO: | |
10079 | case R_PPC64_GOT_TLSGD16_HI: | |
10080 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b | 10081 | tls_type = TLS_TLS | TLS_GD; |
411e1bfb AM |
10082 | goto dogot; |
10083 | ||
10084 | case R_PPC64_GOT_TLSLD16: | |
10085 | case R_PPC64_GOT_TLSLD16_LO: | |
10086 | case R_PPC64_GOT_TLSLD16_HI: | |
10087 | case R_PPC64_GOT_TLSLD16_HA: | |
951fd09b | 10088 | tls_type = TLS_TLS | TLS_LD; |
411e1bfb AM |
10089 | goto dogot; |
10090 | ||
10091 | case R_PPC64_GOT_TPREL16_DS: | |
10092 | case R_PPC64_GOT_TPREL16_LO_DS: | |
10093 | case R_PPC64_GOT_TPREL16_HI: | |
10094 | case R_PPC64_GOT_TPREL16_HA: | |
10095 | tls_type = TLS_TLS | TLS_TPREL; | |
10096 | goto dogot; | |
10097 | ||
10098 | case R_PPC64_GOT_DTPREL16_DS: | |
10099 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
10100 | case R_PPC64_GOT_DTPREL16_HI: | |
10101 | case R_PPC64_GOT_DTPREL16_HA: | |
10102 | tls_type = TLS_TLS | TLS_DTPREL; | |
10103 | goto dogot; | |
10104 | ||
65f38f15 AM |
10105 | case R_PPC64_GOT16: |
10106 | case R_PPC64_GOT16_LO: | |
10107 | case R_PPC64_GOT16_HI: | |
10108 | case R_PPC64_GOT16_HA: | |
10109 | case R_PPC64_GOT16_DS: | |
10110 | case R_PPC64_GOT16_LO_DS: | |
411e1bfb | 10111 | dogot: |
5bd4f169 AM |
10112 | { |
10113 | /* Relocation is to the entry for this symbol in the global | |
10114 | offset table. */ | |
e717da7e | 10115 | asection *got; |
d881513a | 10116 | bfd_vma *offp; |
5bd4f169 | 10117 | bfd_vma off; |
d881513a | 10118 | unsigned long indx = 0; |
65f38f15 | 10119 | |
d881513a AM |
10120 | if (tls_type == (TLS_TLS | TLS_LD) |
10121 | && (h == NULL | |
f5385ebf | 10122 | || !h->elf.def_dynamic)) |
e717da7e | 10123 | offp = &ppc64_tlsld_got (input_bfd)->offset; |
411e1bfb | 10124 | else |
5bd4f169 | 10125 | { |
d881513a | 10126 | struct got_entry *ent; |
5bd4f169 | 10127 | |
d881513a AM |
10128 | if (h != NULL) |
10129 | { | |
10130 | bfd_boolean dyn = htab->elf.dynamic_sections_created; | |
039b3fef AM |
10131 | if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, |
10132 | &h->elf) | |
d881513a | 10133 | || (info->shared |
039b3fef | 10134 | && SYMBOL_REFERENCES_LOCAL (info, &h->elf))) |
d881513a AM |
10135 | /* This is actually a static link, or it is a |
10136 | -Bsymbolic link and the symbol is defined | |
10137 | locally, or the symbol was forced to be local | |
10138 | because of a version file. */ | |
10139 | ; | |
10140 | else | |
10141 | { | |
039b3fef | 10142 | indx = h->elf.dynindx; |
d881513a AM |
10143 | unresolved_reloc = FALSE; |
10144 | } | |
039b3fef | 10145 | ent = h->elf.got.glist; |
d881513a | 10146 | } |
411e1bfb | 10147 | else |
5bd4f169 | 10148 | { |
d881513a AM |
10149 | if (local_got_ents == NULL) |
10150 | abort (); | |
10151 | ent = local_got_ents[r_symndx]; | |
5bd4f169 | 10152 | } |
d881513a AM |
10153 | |
10154 | for (; ent != NULL; ent = ent->next) | |
10155 | if (ent->addend == rel->r_addend | |
e717da7e | 10156 | && ent->owner == input_bfd |
d881513a AM |
10157 | && ent->tls_type == tls_type) |
10158 | break; | |
10159 | if (ent == NULL) | |
10160 | abort (); | |
10161 | offp = &ent->got.offset; | |
5bd4f169 | 10162 | } |
411e1bfb | 10163 | |
e717da7e AM |
10164 | got = ppc64_elf_tdata (input_bfd)->got; |
10165 | if (got == NULL) | |
10166 | abort (); | |
10167 | ||
411e1bfb AM |
10168 | /* The offset must always be a multiple of 8. We use the |
10169 | least significant bit to record whether we have already | |
10170 | processed this entry. */ | |
d881513a | 10171 | off = *offp; |
411e1bfb AM |
10172 | if ((off & 1) != 0) |
10173 | off &= ~1; | |
5bd4f169 AM |
10174 | else |
10175 | { | |
411e1bfb AM |
10176 | /* Generate relocs for the dynamic linker, except in |
10177 | the case of TLSLD where we'll use one entry per | |
10178 | module. */ | |
e717da7e AM |
10179 | asection *relgot = ppc64_elf_tdata (input_bfd)->relgot; |
10180 | ||
d881513a | 10181 | *offp = off | 1; |
4e795f50 AM |
10182 | if ((info->shared || indx != 0) |
10183 | && (h == NULL | |
039b3fef AM |
10184 | || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT |
10185 | || h->elf.root.type != bfd_link_hash_undefweak)) | |
5bd4f169 | 10186 | { |
e717da7e AM |
10187 | outrel.r_offset = (got->output_section->vma |
10188 | + got->output_offset | |
411e1bfb | 10189 | + off); |
81407a69 | 10190 | outrel.r_addend = rel->r_addend; |
d881513a | 10191 | if (tls_type & (TLS_LD | TLS_GD)) |
5bd4f169 | 10192 | { |
411e1bfb | 10193 | outrel.r_addend = 0; |
e515b051 | 10194 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPMOD64); |
d881513a AM |
10195 | if (tls_type == (TLS_TLS | TLS_GD)) |
10196 | { | |
e717da7e AM |
10197 | loc = relgot->contents; |
10198 | loc += (relgot->reloc_count++ | |
d881513a AM |
10199 | * sizeof (Elf64_External_Rela)); |
10200 | bfd_elf64_swap_reloca_out (output_bfd, | |
10201 | &outrel, loc); | |
e515b051 | 10202 | outrel.r_offset += 8; |
81407a69 | 10203 | outrel.r_addend = rel->r_addend; |
d881513a AM |
10204 | outrel.r_info |
10205 | = ELF64_R_INFO (indx, R_PPC64_DTPREL64); | |
d881513a | 10206 | } |
411e1bfb | 10207 | } |
951fd09b | 10208 | else if (tls_type == (TLS_TLS | TLS_DTPREL)) |
411e1bfb | 10209 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64); |
951fd09b | 10210 | else if (tls_type == (TLS_TLS | TLS_TPREL)) |
411e1bfb AM |
10211 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_TPREL64); |
10212 | else if (indx == 0) | |
81407a69 AM |
10213 | { |
10214 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_RELATIVE); | |
10215 | ||
10216 | /* Write the .got section contents for the sake | |
10217 | of prelink. */ | |
e717da7e | 10218 | loc = got->contents + off; |
23fbd6fa JJ |
10219 | bfd_put_64 (output_bfd, outrel.r_addend + relocation, |
10220 | loc); | |
81407a69 | 10221 | } |
411e1bfb AM |
10222 | else |
10223 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT); | |
81407a69 AM |
10224 | |
10225 | if (indx == 0 && tls_type != (TLS_TLS | TLS_LD)) | |
e515b051 AM |
10226 | { |
10227 | outrel.r_addend += relocation; | |
10228 | if (tls_type & (TLS_GD | TLS_DTPREL | TLS_TPREL)) | |
e1918d23 | 10229 | outrel.r_addend -= htab->elf.tls_sec->vma; |
e515b051 | 10230 | } |
e717da7e AM |
10231 | loc = relgot->contents; |
10232 | loc += (relgot->reloc_count++ | |
411e1bfb AM |
10233 | * sizeof (Elf64_External_Rela)); |
10234 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); | |
10235 | } | |
10236 | ||
ad8e1ba5 | 10237 | /* Init the .got section contents here if we're not |
81407a69 | 10238 | emitting a reloc. */ |
d881513a | 10239 | else |
411e1bfb | 10240 | { |
d881513a | 10241 | relocation += rel->r_addend; |
7b609f53 AM |
10242 | if (tls_type == (TLS_TLS | TLS_LD)) |
10243 | relocation = 1; | |
10244 | else if (tls_type != 0) | |
411e1bfb | 10245 | { |
e1918d23 | 10246 | relocation -= htab->elf.tls_sec->vma + DTP_OFFSET; |
7b609f53 | 10247 | if (tls_type == (TLS_TLS | TLS_TPREL)) |
411e1bfb | 10248 | relocation += DTP_OFFSET - TP_OFFSET; |
5bd4f169 | 10249 | |
7b609f53 AM |
10250 | if (tls_type == (TLS_TLS | TLS_GD)) |
10251 | { | |
10252 | bfd_put_64 (output_bfd, relocation, | |
e717da7e | 10253 | got->contents + off + 8); |
7b609f53 AM |
10254 | relocation = 1; |
10255 | } | |
411e1bfb | 10256 | } |
7b609f53 | 10257 | |
411e1bfb | 10258 | bfd_put_64 (output_bfd, relocation, |
e717da7e | 10259 | got->contents + off); |
5bd4f169 AM |
10260 | } |
10261 | } | |
10262 | ||
65f38f15 AM |
10263 | if (off >= (bfd_vma) -2) |
10264 | abort (); | |
10265 | ||
e717da7e | 10266 | relocation = got->output_offset + off; |
65f38f15 | 10267 | |
5bd4f169 | 10268 | /* TOC base (r2) is TOC start plus 0x8000. */ |
e717da7e | 10269 | addend = -TOC_BASE_OFF; |
5bd4f169 | 10270 | } |
65f38f15 AM |
10271 | break; |
10272 | ||
10273 | case R_PPC64_PLT16_HA: | |
10274 | case R_PPC64_PLT16_HI: | |
10275 | case R_PPC64_PLT16_LO: | |
10276 | case R_PPC64_PLT32: | |
10277 | case R_PPC64_PLT64: | |
10278 | /* Relocation is to the entry for this symbol in the | |
10279 | procedure linkage table. */ | |
10280 | ||
10281 | /* Resolve a PLT reloc against a local symbol directly, | |
10282 | without using the procedure linkage table. */ | |
10283 | if (h == NULL) | |
10284 | break; | |
10285 | ||
411e1bfb AM |
10286 | /* It's possible that we didn't make a PLT entry for this |
10287 | symbol. This happens when statically linking PIC code, | |
10288 | or when using -Bsymbolic. Go find a match if there is a | |
10289 | PLT entry. */ | |
4ce794b7 | 10290 | if (htab->plt != NULL) |
65f38f15 | 10291 | { |
411e1bfb | 10292 | struct plt_entry *ent; |
039b3fef | 10293 | for (ent = h->elf.plt.plist; ent != NULL; ent = ent->next) |
411e1bfb AM |
10294 | if (ent->addend == rel->r_addend |
10295 | && ent->plt.offset != (bfd_vma) -1) | |
10296 | { | |
4ce794b7 AM |
10297 | relocation = (htab->plt->output_section->vma |
10298 | + htab->plt->output_offset | |
411e1bfb AM |
10299 | + ent->plt.offset); |
10300 | unresolved_reloc = FALSE; | |
10301 | } | |
65f38f15 | 10302 | } |
65f38f15 | 10303 | break; |
5bd4f169 | 10304 | |
0b13192e AM |
10305 | case R_PPC64_TOC: |
10306 | /* Relocation value is TOC base. */ | |
10307 | relocation = TOCstart; | |
10308 | if (r_symndx == 0) | |
10309 | relocation += htab->stub_group[input_section->id].toc_off; | |
8517fae7 AM |
10310 | else if (unresolved_reloc) |
10311 | ; | |
10312 | else if (sec != NULL && sec->id <= htab->top_id) | |
0b13192e AM |
10313 | relocation += htab->stub_group[sec->id].toc_off; |
10314 | else | |
10315 | unresolved_reloc = TRUE; | |
10316 | goto dodyn2; | |
10317 | ||
5bd4f169 AM |
10318 | /* TOC16 relocs. We want the offset relative to the TOC base, |
10319 | which is the address of the start of the TOC plus 0x8000. | |
10320 | The TOC consists of sections .got, .toc, .tocbss, and .plt, | |
10321 | in this order. */ | |
65f38f15 AM |
10322 | case R_PPC64_TOC16: |
10323 | case R_PPC64_TOC16_LO: | |
10324 | case R_PPC64_TOC16_HI: | |
10325 | case R_PPC64_TOC16_DS: | |
10326 | case R_PPC64_TOC16_LO_DS: | |
10327 | case R_PPC64_TOC16_HA: | |
ad8e1ba5 | 10328 | addend -= TOCstart + htab->stub_group[input_section->id].toc_off; |
5bd4f169 AM |
10329 | break; |
10330 | ||
10331 | /* Relocate against the beginning of the section. */ | |
65f38f15 AM |
10332 | case R_PPC64_SECTOFF: |
10333 | case R_PPC64_SECTOFF_LO: | |
10334 | case R_PPC64_SECTOFF_HI: | |
10335 | case R_PPC64_SECTOFF_DS: | |
10336 | case R_PPC64_SECTOFF_LO_DS: | |
10337 | case R_PPC64_SECTOFF_HA: | |
4ce794b7 | 10338 | if (sec != NULL) |
65f38f15 | 10339 | addend -= sec->output_section->vma; |
5bd4f169 AM |
10340 | break; |
10341 | ||
721956f4 AM |
10342 | case R_PPC64_REL14: |
10343 | case R_PPC64_REL14_BRNTAKEN: | |
10344 | case R_PPC64_REL14_BRTAKEN: | |
5d1634d7 AM |
10345 | case R_PPC64_REL24: |
10346 | break; | |
10347 | ||
411e1bfb AM |
10348 | case R_PPC64_TPREL16: |
10349 | case R_PPC64_TPREL16_LO: | |
10350 | case R_PPC64_TPREL16_HI: | |
10351 | case R_PPC64_TPREL16_HA: | |
10352 | case R_PPC64_TPREL16_DS: | |
10353 | case R_PPC64_TPREL16_LO_DS: | |
10354 | case R_PPC64_TPREL16_HIGHER: | |
10355 | case R_PPC64_TPREL16_HIGHERA: | |
10356 | case R_PPC64_TPREL16_HIGHEST: | |
10357 | case R_PPC64_TPREL16_HIGHESTA: | |
e1918d23 | 10358 | addend -= htab->elf.tls_sec->vma + TP_OFFSET; |
411e1bfb AM |
10359 | if (info->shared) |
10360 | /* The TPREL16 relocs shouldn't really be used in shared | |
10361 | libs as they will result in DT_TEXTREL being set, but | |
10362 | support them anyway. */ | |
10363 | goto dodyn; | |
10364 | break; | |
10365 | ||
10366 | case R_PPC64_DTPREL16: | |
10367 | case R_PPC64_DTPREL16_LO: | |
10368 | case R_PPC64_DTPREL16_HI: | |
10369 | case R_PPC64_DTPREL16_HA: | |
10370 | case R_PPC64_DTPREL16_DS: | |
10371 | case R_PPC64_DTPREL16_LO_DS: | |
10372 | case R_PPC64_DTPREL16_HIGHER: | |
10373 | case R_PPC64_DTPREL16_HIGHERA: | |
10374 | case R_PPC64_DTPREL16_HIGHEST: | |
10375 | case R_PPC64_DTPREL16_HIGHESTA: | |
e1918d23 | 10376 | addend -= htab->elf.tls_sec->vma + DTP_OFFSET; |
411e1bfb AM |
10377 | break; |
10378 | ||
e515b051 AM |
10379 | case R_PPC64_DTPMOD64: |
10380 | relocation = 1; | |
10381 | addend = 0; | |
10382 | goto dodyn; | |
10383 | ||
411e1bfb | 10384 | case R_PPC64_TPREL64: |
e1918d23 | 10385 | addend -= htab->elf.tls_sec->vma + TP_OFFSET; |
411e1bfb AM |
10386 | goto dodyn; |
10387 | ||
10388 | case R_PPC64_DTPREL64: | |
e1918d23 | 10389 | addend -= htab->elf.tls_sec->vma + DTP_OFFSET; |
411e1bfb AM |
10390 | /* Fall thru */ |
10391 | ||
65f38f15 AM |
10392 | /* Relocations that may need to be propagated if this is a |
10393 | dynamic object. */ | |
04c9666a | 10394 | case R_PPC64_REL30: |
65f38f15 AM |
10395 | case R_PPC64_REL32: |
10396 | case R_PPC64_REL64: | |
10397 | case R_PPC64_ADDR14: | |
10398 | case R_PPC64_ADDR14_BRNTAKEN: | |
10399 | case R_PPC64_ADDR14_BRTAKEN: | |
10400 | case R_PPC64_ADDR16: | |
10401 | case R_PPC64_ADDR16_DS: | |
10402 | case R_PPC64_ADDR16_HA: | |
10403 | case R_PPC64_ADDR16_HI: | |
10404 | case R_PPC64_ADDR16_HIGHER: | |
10405 | case R_PPC64_ADDR16_HIGHERA: | |
10406 | case R_PPC64_ADDR16_HIGHEST: | |
10407 | case R_PPC64_ADDR16_HIGHESTA: | |
10408 | case R_PPC64_ADDR16_LO: | |
10409 | case R_PPC64_ADDR16_LO_DS: | |
10410 | case R_PPC64_ADDR24: | |
65f38f15 AM |
10411 | case R_PPC64_ADDR32: |
10412 | case R_PPC64_ADDR64: | |
10413 | case R_PPC64_UADDR16: | |
10414 | case R_PPC64_UADDR32: | |
10415 | case R_PPC64_UADDR64: | |
ec338859 AM |
10416 | /* r_symndx will be zero only for relocs against symbols |
10417 | from removed linkonce sections, or sections discarded by | |
10418 | a linker script. */ | |
411e1bfb | 10419 | dodyn: |
5d1634d7 AM |
10420 | if (r_symndx == 0) |
10421 | break; | |
10422 | /* Fall thru. */ | |
10423 | ||
0b13192e | 10424 | dodyn2: |
5d1634d7 | 10425 | if ((input_section->flags & SEC_ALLOC) == 0) |
ec338859 AM |
10426 | break; |
10427 | ||
41bd81ab AM |
10428 | if (NO_OPD_RELOCS && is_opd) |
10429 | break; | |
10430 | ||
65f38f15 | 10431 | if ((info->shared |
4e795f50 | 10432 | && (h == NULL |
039b3fef AM |
10433 | || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT |
10434 | || h->elf.root.type != bfd_link_hash_undefweak) | |
411e1bfb | 10435 | && (MUST_BE_DYN_RELOC (r_type) |
039b3fef | 10436 | || !SYMBOL_CALLS_LOCAL (info, &h->elf))) |
f4656909 AM |
10437 | || (ELIMINATE_COPY_RELOCS |
10438 | && !info->shared | |
65f38f15 | 10439 | && h != NULL |
039b3fef | 10440 | && h->elf.dynindx != -1 |
f5385ebf AM |
10441 | && !h->elf.non_got_ref |
10442 | && h->elf.def_dynamic | |
10443 | && !h->elf.def_regular)) | |
65f38f15 AM |
10444 | { |
10445 | Elf_Internal_Rela outrel; | |
b34976b6 | 10446 | bfd_boolean skip, relocate; |
65f38f15 | 10447 | asection *sreloc; |
947216bf | 10448 | bfd_byte *loc; |
1cf1f670 | 10449 | bfd_vma out_off; |
65f38f15 AM |
10450 | |
10451 | /* When generating a dynamic object, these relocations | |
10452 | are copied into the output file to be resolved at run | |
10453 | time. */ | |
10454 | ||
b34976b6 AM |
10455 | skip = FALSE; |
10456 | relocate = FALSE; | |
65f38f15 | 10457 | |
1cf1f670 AM |
10458 | out_off = _bfd_elf_section_offset (output_bfd, info, |
10459 | input_section, rel->r_offset); | |
10460 | if (out_off == (bfd_vma) -1) | |
b34976b6 | 10461 | skip = TRUE; |
1cf1f670 | 10462 | else if (out_off == (bfd_vma) -2) |
b34976b6 | 10463 | skip = TRUE, relocate = TRUE; |
1cf1f670 AM |
10464 | out_off += (input_section->output_section->vma |
10465 | + input_section->output_offset); | |
10466 | outrel.r_offset = out_off; | |
411e1bfb | 10467 | outrel.r_addend = rel->r_addend; |
65f38f15 | 10468 | |
1cf1f670 AM |
10469 | /* Optimize unaligned reloc use. */ |
10470 | if ((r_type == R_PPC64_ADDR64 && (out_off & 7) != 0) | |
10471 | || (r_type == R_PPC64_UADDR64 && (out_off & 7) == 0)) | |
10472 | r_type ^= R_PPC64_ADDR64 ^ R_PPC64_UADDR64; | |
10473 | else if ((r_type == R_PPC64_ADDR32 && (out_off & 3) != 0) | |
10474 | || (r_type == R_PPC64_UADDR32 && (out_off & 3) == 0)) | |
10475 | r_type ^= R_PPC64_ADDR32 ^ R_PPC64_UADDR32; | |
10476 | else if ((r_type == R_PPC64_ADDR16 && (out_off & 1) != 0) | |
10477 | || (r_type == R_PPC64_UADDR16 && (out_off & 1) == 0)) | |
10478 | r_type ^= R_PPC64_ADDR16 ^ R_PPC64_UADDR16; | |
10479 | ||
65f38f15 | 10480 | if (skip) |
0bb2d96a | 10481 | memset (&outrel, 0, sizeof outrel); |
039b3fef | 10482 | else if (!SYMBOL_REFERENCES_LOCAL (info, &h->elf) |
0b13192e AM |
10483 | && !is_opd |
10484 | && r_type != R_PPC64_TOC) | |
039b3fef | 10485 | outrel.r_info = ELF64_R_INFO (h->elf.dynindx, r_type); |
65f38f15 AM |
10486 | else |
10487 | { | |
41bd81ab AM |
10488 | /* This symbol is local, or marked to become local, |
10489 | or this is an opd section reloc which must point | |
10490 | at a local function. */ | |
65f38f15 | 10491 | outrel.r_addend += relocation; |
e86ce104 | 10492 | if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC) |
65f38f15 | 10493 | { |
3fad3c7c | 10494 | if (is_opd && h != NULL) |
afbe61cf AM |
10495 | { |
10496 | /* Lie about opd entries. This case occurs | |
10497 | when building shared libraries and we | |
10498 | reference a function in another shared | |
3fad3c7c AM |
10499 | lib. The same thing happens for a weak |
10500 | definition in an application that's | |
10501 | overridden by a strong definition in a | |
10502 | shared lib. (I believe this is a generic | |
10503 | bug in binutils handling of weak syms.) | |
10504 | In these cases we won't use the opd | |
1e2f5b6e | 10505 | entry in this lib. */ |
b34976b6 | 10506 | unresolved_reloc = FALSE; |
afbe61cf | 10507 | } |
65f38f15 | 10508 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); |
81407a69 AM |
10509 | |
10510 | /* We need to relocate .opd contents for ld.so. | |
10511 | Prelink also wants simple and consistent rules | |
10512 | for relocs. This make all RELATIVE relocs have | |
10513 | *r_offset equal to r_addend. */ | |
10514 | relocate = TRUE; | |
65f38f15 AM |
10515 | } |
10516 | else | |
10517 | { | |
10518 | long indx = 0; | |
10519 | ||
41bd81ab | 10520 | if (bfd_is_abs_section (sec)) |
65f38f15 AM |
10521 | ; |
10522 | else if (sec == NULL || sec->owner == NULL) | |
10523 | { | |
10524 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 10525 | return FALSE; |
65f38f15 AM |
10526 | } |
10527 | else | |
10528 | { | |
10529 | asection *osec; | |
10530 | ||
10531 | osec = sec->output_section; | |
10532 | indx = elf_section_data (osec)->dynindx; | |
10533 | ||
10534 | /* We are turning this relocation into one | |
10535 | against a section symbol, so subtract out | |
10536 | the output section's address but not the | |
10537 | offset of the input section in the output | |
10538 | section. */ | |
10539 | outrel.r_addend -= osec->vma; | |
10540 | } | |
10541 | ||
10542 | outrel.r_info = ELF64_R_INFO (indx, r_type); | |
10543 | } | |
10544 | } | |
10545 | ||
10546 | sreloc = elf_section_data (input_section)->sreloc; | |
10547 | if (sreloc == NULL) | |
10548 | abort (); | |
10549 | ||
947216bf AM |
10550 | loc = sreloc->contents; |
10551 | loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela); | |
65f38f15 AM |
10552 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); |
10553 | ||
10554 | /* If this reloc is against an external symbol, it will | |
10555 | be computed at runtime, so there's no need to do | |
81407a69 AM |
10556 | anything now. However, for the sake of prelink ensure |
10557 | that the section contents are a known value. */ | |
65f38f15 | 10558 | if (! relocate) |
81407a69 AM |
10559 | { |
10560 | unresolved_reloc = FALSE; | |
10561 | /* The value chosen here is quite arbitrary as ld.so | |
10562 | ignores section contents except for the special | |
10563 | case of .opd where the contents might be accessed | |
10564 | before relocation. Choose zero, as that won't | |
10565 | cause reloc overflow. */ | |
10566 | relocation = 0; | |
10567 | addend = 0; | |
10568 | /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs | |
10569 | to improve backward compatibility with older | |
10570 | versions of ld. */ | |
10571 | if (r_type == R_PPC64_ADDR64) | |
10572 | addend = outrel.r_addend; | |
10573 | /* Adjust pc_relative relocs to have zero in *r_offset. */ | |
4ce794b7 | 10574 | else if (ppc64_elf_howto_table[r_type]->pc_relative) |
000732f7 AM |
10575 | addend = (input_section->output_section->vma |
10576 | + input_section->output_offset | |
10577 | + rel->r_offset); | |
81407a69 | 10578 | } |
65f38f15 | 10579 | } |
5bd4f169 AM |
10580 | break; |
10581 | ||
65f38f15 AM |
10582 | case R_PPC64_COPY: |
10583 | case R_PPC64_GLOB_DAT: | |
10584 | case R_PPC64_JMP_SLOT: | |
10585 | case R_PPC64_RELATIVE: | |
10586 | /* We shouldn't ever see these dynamic relocs in relocatable | |
10587 | files. */ | |
ae9a127f | 10588 | /* Fall through. */ |
65f38f15 AM |
10589 | |
10590 | case R_PPC64_PLTGOT16: | |
10591 | case R_PPC64_PLTGOT16_DS: | |
10592 | case R_PPC64_PLTGOT16_HA: | |
10593 | case R_PPC64_PLTGOT16_HI: | |
10594 | case R_PPC64_PLTGOT16_LO: | |
10595 | case R_PPC64_PLTGOT16_LO_DS: | |
10596 | case R_PPC64_PLTREL32: | |
10597 | case R_PPC64_PLTREL64: | |
10598 | /* These ones haven't been implemented yet. */ | |
10599 | ||
10600 | (*_bfd_error_handler) | |
d003868e AM |
10601 | (_("%B: relocation %s is not supported for symbol %s."), |
10602 | input_bfd, | |
4ce794b7 | 10603 | ppc64_elf_howto_table[r_type]->name, sym_name); |
5bd4f169 AM |
10604 | |
10605 | bfd_set_error (bfd_error_invalid_operation); | |
b34976b6 | 10606 | ret = FALSE; |
5bd4f169 | 10607 | continue; |
65f38f15 | 10608 | } |
5bd4f169 | 10609 | |
65f38f15 AM |
10610 | /* Do any further special processing. */ |
10611 | switch (r_type) | |
10612 | { | |
10613 | default: | |
10614 | break; | |
10615 | ||
10616 | case R_PPC64_ADDR16_HA: | |
10617 | case R_PPC64_ADDR16_HIGHERA: | |
10618 | case R_PPC64_ADDR16_HIGHESTA: | |
86bbe32f AM |
10619 | case R_PPC64_GOT16_HA: |
10620 | case R_PPC64_PLTGOT16_HA: | |
65f38f15 AM |
10621 | case R_PPC64_PLT16_HA: |
10622 | case R_PPC64_TOC16_HA: | |
10623 | case R_PPC64_SECTOFF_HA: | |
411e1bfb AM |
10624 | case R_PPC64_TPREL16_HA: |
10625 | case R_PPC64_DTPREL16_HA: | |
10626 | case R_PPC64_GOT_TLSGD16_HA: | |
10627 | case R_PPC64_GOT_TLSLD16_HA: | |
10628 | case R_PPC64_GOT_TPREL16_HA: | |
10629 | case R_PPC64_GOT_DTPREL16_HA: | |
10630 | case R_PPC64_TPREL16_HIGHER: | |
10631 | case R_PPC64_TPREL16_HIGHERA: | |
10632 | case R_PPC64_TPREL16_HIGHEST: | |
10633 | case R_PPC64_TPREL16_HIGHESTA: | |
10634 | case R_PPC64_DTPREL16_HIGHER: | |
10635 | case R_PPC64_DTPREL16_HIGHERA: | |
10636 | case R_PPC64_DTPREL16_HIGHEST: | |
10637 | case R_PPC64_DTPREL16_HIGHESTA: | |
65f38f15 AM |
10638 | /* It's just possible that this symbol is a weak symbol |
10639 | that's not actually defined anywhere. In that case, | |
10640 | 'sec' would be NULL, and we should leave the symbol | |
10641 | alone (it will be set to zero elsewhere in the link). */ | |
10642 | if (sec != NULL) | |
e515b051 AM |
10643 | /* Add 0x10000 if sign bit in 0:15 is set. |
10644 | Bits 0:15 are not used. */ | |
10645 | addend += 0x8000; | |
65f38f15 AM |
10646 | break; |
10647 | ||
10648 | case R_PPC64_ADDR16_DS: | |
10649 | case R_PPC64_ADDR16_LO_DS: | |
10650 | case R_PPC64_GOT16_DS: | |
10651 | case R_PPC64_GOT16_LO_DS: | |
10652 | case R_PPC64_PLT16_LO_DS: | |
10653 | case R_PPC64_SECTOFF_DS: | |
10654 | case R_PPC64_SECTOFF_LO_DS: | |
10655 | case R_PPC64_TOC16_DS: | |
10656 | case R_PPC64_TOC16_LO_DS: | |
10657 | case R_PPC64_PLTGOT16_DS: | |
10658 | case R_PPC64_PLTGOT16_LO_DS: | |
411e1bfb AM |
10659 | case R_PPC64_GOT_TPREL16_DS: |
10660 | case R_PPC64_GOT_TPREL16_LO_DS: | |
10661 | case R_PPC64_GOT_DTPREL16_DS: | |
10662 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
10663 | case R_PPC64_TPREL16_DS: | |
10664 | case R_PPC64_TPREL16_LO_DS: | |
10665 | case R_PPC64_DTPREL16_DS: | |
10666 | case R_PPC64_DTPREL16_LO_DS: | |
adadcc0c AM |
10667 | insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3)); |
10668 | mask = 3; | |
10669 | /* If this reloc is against an lq insn, then the value must be | |
10670 | a multiple of 16. This is somewhat of a hack, but the | |
10671 | "correct" way to do this by defining _DQ forms of all the | |
10672 | _DS relocs bloats all reloc switches in this file. It | |
10673 | doesn't seem to make much sense to use any of these relocs | |
10674 | in data, so testing the insn should be safe. */ | |
494dac0c | 10675 | if ((insn & (0x3f << 26)) == (56u << 26)) |
adadcc0c AM |
10676 | mask = 15; |
10677 | if (((relocation + addend) & mask) != 0) | |
65f38f15 AM |
10678 | { |
10679 | (*_bfd_error_handler) | |
d003868e AM |
10680 | (_("%B: error: relocation %s not a multiple of %d"), |
10681 | input_bfd, | |
4ce794b7 | 10682 | ppc64_elf_howto_table[r_type]->name, |
adadcc0c | 10683 | mask + 1); |
65f38f15 | 10684 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 10685 | ret = FALSE; |
65f38f15 AM |
10686 | continue; |
10687 | } | |
10688 | break; | |
5bd4f169 AM |
10689 | } |
10690 | ||
239e1f3a AM |
10691 | /* Dynamic relocs are not propagated for SEC_DEBUGGING sections |
10692 | because such sections are not SEC_ALLOC and thus ld.so will | |
10693 | not process them. */ | |
65f38f15 | 10694 | if (unresolved_reloc |
239e1f3a | 10695 | && !((input_section->flags & SEC_DEBUGGING) != 0 |
f5385ebf | 10696 | && h->elf.def_dynamic)) |
9c07fe7c AM |
10697 | { |
10698 | (*_bfd_error_handler) | |
d003868e AM |
10699 | (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"), |
10700 | input_bfd, | |
10701 | input_section, | |
9c07fe7c | 10702 | (long) rel->r_offset, |
7b609f53 | 10703 | ppc64_elf_howto_table[(int) r_type]->name, |
039b3fef | 10704 | h->elf.root.root.string); |
b34976b6 | 10705 | ret = FALSE; |
9c07fe7c | 10706 | } |
5bd4f169 | 10707 | |
65f38f15 | 10708 | r = _bfd_final_link_relocate (ppc64_elf_howto_table[(int) r_type], |
5bd4f169 AM |
10709 | input_bfd, |
10710 | input_section, | |
10711 | contents, | |
411e1bfb | 10712 | rel->r_offset, |
5bd4f169 AM |
10713 | relocation, |
10714 | addend); | |
10715 | ||
ef60b7ff | 10716 | if (r != bfd_reloc_ok) |
5bd4f169 | 10717 | { |
cd27b276 AM |
10718 | if (sym_name == NULL) |
10719 | sym_name = "(null)"; | |
10720 | if (r == bfd_reloc_overflow) | |
5bd4f169 | 10721 | { |
cd27b276 AM |
10722 | if (warned) |
10723 | continue; | |
10724 | if (h != NULL | |
039b3fef | 10725 | && h->elf.root.type == bfd_link_hash_undefweak |
4ce794b7 | 10726 | && ppc64_elf_howto_table[r_type]->pc_relative) |
5bd4f169 AM |
10727 | { |
10728 | /* Assume this is a call protected by other code that | |
10729 | detects the symbol is undefined. If this is the case, | |
10730 | we can safely ignore the overflow. If not, the | |
10731 | program is hosed anyway, and a little warning isn't | |
10732 | going to help. */ | |
10733 | ||
10734 | continue; | |
10735 | } | |
10736 | ||
ef60b7ff | 10737 | if (!((*info->callbacks->reloc_overflow) |
dfeffb9f L |
10738 | (info, (h ? &h->elf.root : NULL), sym_name, |
10739 | ppc64_elf_howto_table[r_type]->name, | |
411e1bfb | 10740 | rel->r_addend, input_bfd, input_section, rel->r_offset))) |
b34976b6 | 10741 | return FALSE; |
ef60b7ff AM |
10742 | } |
10743 | else | |
10744 | { | |
10745 | (*_bfd_error_handler) | |
d003868e AM |
10746 | (_("%B(%A+0x%lx): %s reloc against `%s': error %d"), |
10747 | input_bfd, | |
10748 | input_section, | |
7b609f53 | 10749 | (long) rel->r_offset, |
4ce794b7 | 10750 | ppc64_elf_howto_table[r_type]->name, |
7b609f53 AM |
10751 | sym_name, |
10752 | (int) r); | |
b34976b6 | 10753 | ret = FALSE; |
ef60b7ff | 10754 | } |
5bd4f169 | 10755 | } |
5bd4f169 AM |
10756 | } |
10757 | ||
645ea6a9 AM |
10758 | /* If we're emitting relocations, then shortly after this function |
10759 | returns, reloc offsets and addends for this section will be | |
10760 | adjusted. Worse, reloc symbol indices will be for the output | |
8860955f AM |
10761 | file rather than the input. Save a copy of the relocs for |
10762 | opd_entry_value. */ | |
10763 | if (is_opd && info->emitrelocations) | |
10764 | { | |
10765 | bfd_size_type amt; | |
10766 | amt = input_section->reloc_count * sizeof (Elf_Internal_Rela); | |
10767 | rel = bfd_alloc (input_bfd, amt); | |
10768 | BFD_ASSERT (ppc64_elf_tdata (input_bfd)->opd_relocs == NULL); | |
10769 | ppc64_elf_tdata (input_bfd)->opd_relocs = rel; | |
10770 | if (rel == NULL) | |
10771 | return FALSE; | |
10772 | memcpy (rel, relocs, amt); | |
10773 | } | |
5bd4f169 AM |
10774 | return ret; |
10775 | } | |
10776 | ||
754021d0 AM |
10777 | /* Adjust the value of any local symbols in opd sections. */ |
10778 | ||
10779 | static bfd_boolean | |
10780 | ppc64_elf_output_symbol_hook (struct bfd_link_info *info, | |
10781 | const char *name ATTRIBUTE_UNUSED, | |
10782 | Elf_Internal_Sym *elfsym, | |
10783 | asection *input_sec, | |
10784 | struct elf_link_hash_entry *h) | |
10785 | { | |
4025353c | 10786 | long *opd_adjust, adjust; |
754021d0 AM |
10787 | bfd_vma value; |
10788 | ||
4025353c AM |
10789 | if (h != NULL) |
10790 | return TRUE; | |
10791 | ||
10792 | opd_adjust = get_opd_info (input_sec); | |
10793 | if (opd_adjust == NULL) | |
754021d0 AM |
10794 | return TRUE; |
10795 | ||
10796 | value = elfsym->st_value - input_sec->output_offset; | |
10797 | if (!info->relocatable) | |
10798 | value -= input_sec->output_section->vma; | |
10799 | ||
3f764659 | 10800 | adjust = opd_adjust[value / 8]; |
4025353c AM |
10801 | if (adjust == -1) |
10802 | elfsym->st_value = 0; | |
10803 | else | |
10804 | elfsym->st_value += adjust; | |
754021d0 AM |
10805 | return TRUE; |
10806 | } | |
10807 | ||
5bd4f169 AM |
10808 | /* Finish up dynamic symbol handling. We set the contents of various |
10809 | dynamic sections here. */ | |
10810 | ||
b34976b6 | 10811 | static bfd_boolean |
4ce794b7 AM |
10812 | ppc64_elf_finish_dynamic_symbol (bfd *output_bfd, |
10813 | struct bfd_link_info *info, | |
10814 | struct elf_link_hash_entry *h, | |
10815 | Elf_Internal_Sym *sym) | |
5bd4f169 | 10816 | { |
65f38f15 | 10817 | struct ppc_link_hash_table *htab; |
5bd4f169 | 10818 | bfd *dynobj; |
8387904d AM |
10819 | struct plt_entry *ent; |
10820 | Elf_Internal_Rela rela; | |
10821 | bfd_byte *loc; | |
5bd4f169 | 10822 | |
65f38f15 AM |
10823 | htab = ppc_hash_table (info); |
10824 | dynobj = htab->elf.dynobj; | |
5bd4f169 | 10825 | |
8387904d AM |
10826 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) |
10827 | if (ent->plt.offset != (bfd_vma) -1) | |
10828 | { | |
10829 | /* This symbol has an entry in the procedure linkage | |
10830 | table. Set it up. */ | |
10831 | ||
10832 | if (htab->plt == NULL | |
10833 | || htab->relplt == NULL | |
10834 | || htab->glink == NULL) | |
10835 | abort (); | |
10836 | ||
10837 | /* Create a JMP_SLOT reloc to inform the dynamic linker to | |
10838 | fill in the PLT entry. */ | |
10839 | rela.r_offset = (htab->plt->output_section->vma | |
10840 | + htab->plt->output_offset | |
10841 | + ent->plt.offset); | |
10842 | rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT); | |
10843 | rela.r_addend = ent->addend; | |
10844 | ||
10845 | loc = htab->relplt->contents; | |
10846 | loc += ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE) / PLT_ENTRY_SIZE | |
10847 | * sizeof (Elf64_External_Rela)); | |
10848 | bfd_elf64_swap_reloca_out (output_bfd, &rela, loc); | |
10849 | } | |
5bd4f169 | 10850 | |
f5385ebf | 10851 | if (h->needs_copy) |
5bd4f169 | 10852 | { |
5bd4f169 | 10853 | Elf_Internal_Rela rela; |
947216bf | 10854 | bfd_byte *loc; |
5bd4f169 | 10855 | |
65f38f15 | 10856 | /* This symbol needs a copy reloc. Set it up. */ |
5bd4f169 | 10857 | |
65f38f15 AM |
10858 | if (h->dynindx == -1 |
10859 | || (h->root.type != bfd_link_hash_defined | |
10860 | && h->root.type != bfd_link_hash_defweak) | |
4ce794b7 | 10861 | || htab->relbss == NULL) |
65f38f15 | 10862 | abort (); |
5bd4f169 AM |
10863 | |
10864 | rela.r_offset = (h->root.u.def.value | |
10865 | + h->root.u.def.section->output_section->vma | |
10866 | + h->root.u.def.section->output_offset); | |
10867 | rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY); | |
10868 | rela.r_addend = 0; | |
4ce794b7 AM |
10869 | loc = htab->relbss->contents; |
10870 | loc += htab->relbss->reloc_count++ * sizeof (Elf64_External_Rela); | |
65f38f15 | 10871 | bfd_elf64_swap_reloca_out (output_bfd, &rela, loc); |
5bd4f169 AM |
10872 | } |
10873 | ||
5bd4f169 AM |
10874 | /* Mark some specially defined symbols as absolute. */ |
10875 | if (strcmp (h->root.root.string, "_DYNAMIC") == 0) | |
10876 | sym->st_shndx = SHN_ABS; | |
10877 | ||
b34976b6 | 10878 | return TRUE; |
5bd4f169 AM |
10879 | } |
10880 | ||
65f38f15 AM |
10881 | /* Used to decide how to sort relocs in an optimal manner for the |
10882 | dynamic linker, before writing them out. */ | |
10883 | ||
10884 | static enum elf_reloc_type_class | |
4ce794b7 | 10885 | ppc64_elf_reloc_type_class (const Elf_Internal_Rela *rela) |
65f38f15 | 10886 | { |
04c9666a | 10887 | enum elf_ppc64_reloc_type r_type; |
a33d1f77 | 10888 | |
4ce794b7 | 10889 | r_type = ELF64_R_TYPE (rela->r_info); |
a33d1f77 | 10890 | switch (r_type) |
65f38f15 AM |
10891 | { |
10892 | case R_PPC64_RELATIVE: | |
10893 | return reloc_class_relative; | |
10894 | case R_PPC64_JMP_SLOT: | |
10895 | return reloc_class_plt; | |
10896 | case R_PPC64_COPY: | |
10897 | return reloc_class_copy; | |
10898 | default: | |
10899 | return reloc_class_normal; | |
10900 | } | |
10901 | } | |
10902 | ||
5bd4f169 AM |
10903 | /* Finish up the dynamic sections. */ |
10904 | ||
b34976b6 | 10905 | static bfd_boolean |
4ce794b7 AM |
10906 | ppc64_elf_finish_dynamic_sections (bfd *output_bfd, |
10907 | struct bfd_link_info *info) | |
5bd4f169 | 10908 | { |
65f38f15 AM |
10909 | struct ppc_link_hash_table *htab; |
10910 | bfd *dynobj; | |
5bd4f169 | 10911 | asection *sdyn; |
5bd4f169 | 10912 | |
65f38f15 AM |
10913 | htab = ppc_hash_table (info); |
10914 | dynobj = htab->elf.dynobj; | |
5bd4f169 AM |
10915 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); |
10916 | ||
65f38f15 | 10917 | if (htab->elf.dynamic_sections_created) |
5bd4f169 | 10918 | { |
5bd4f169 AM |
10919 | Elf64_External_Dyn *dyncon, *dynconend; |
10920 | ||
4ce794b7 | 10921 | if (sdyn == NULL || htab->got == NULL) |
65f38f15 | 10922 | abort (); |
5bd4f169 AM |
10923 | |
10924 | dyncon = (Elf64_External_Dyn *) sdyn->contents; | |
eea6121a | 10925 | dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size); |
5bd4f169 AM |
10926 | for (; dyncon < dynconend; dyncon++) |
10927 | { | |
10928 | Elf_Internal_Dyn dyn; | |
19397422 | 10929 | asection *s; |
5bd4f169 AM |
10930 | |
10931 | bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn); | |
10932 | ||
10933 | switch (dyn.d_tag) | |
10934 | { | |
65f38f15 AM |
10935 | default: |
10936 | continue; | |
5bd4f169 | 10937 | |
5d1634d7 | 10938 | case DT_PPC64_GLINK: |
4ce794b7 | 10939 | s = htab->glink; |
6348e046 | 10940 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
ad8e1ba5 AM |
10941 | /* We stupidly defined DT_PPC64_GLINK to be the start |
10942 | of glink rather than the first entry point, which is | |
10943 | what ld.so needs, and now have a bigger stub to | |
10944 | support automatic multiple TOCs. */ | |
10945 | dyn.d_un.d_ptr += GLINK_CALL_STUB_SIZE - 32; | |
5d1634d7 AM |
10946 | break; |
10947 | ||
19397422 AM |
10948 | case DT_PPC64_OPD: |
10949 | s = bfd_get_section_by_name (output_bfd, ".opd"); | |
6348e046 AM |
10950 | if (s == NULL) |
10951 | continue; | |
10952 | dyn.d_un.d_ptr = s->vma; | |
19397422 AM |
10953 | break; |
10954 | ||
10955 | case DT_PPC64_OPDSZ: | |
10956 | s = bfd_get_section_by_name (output_bfd, ".opd"); | |
6348e046 AM |
10957 | if (s == NULL) |
10958 | continue; | |
eea6121a | 10959 | dyn.d_un.d_val = s->size; |
19397422 AM |
10960 | break; |
10961 | ||
65f38f15 | 10962 | case DT_PLTGOT: |
4ce794b7 | 10963 | s = htab->plt; |
6348e046 | 10964 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
65f38f15 AM |
10965 | break; |
10966 | ||
10967 | case DT_JMPREL: | |
4ce794b7 | 10968 | s = htab->relplt; |
6348e046 | 10969 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
65f38f15 | 10970 | break; |
5bd4f169 | 10971 | |
65f38f15 | 10972 | case DT_PLTRELSZ: |
eea6121a | 10973 | dyn.d_un.d_val = htab->relplt->size; |
5d1634d7 AM |
10974 | break; |
10975 | ||
10976 | case DT_RELASZ: | |
10977 | /* Don't count procedure linkage table relocs in the | |
10978 | overall reloc count. */ | |
4ce794b7 | 10979 | s = htab->relplt; |
6348e046 AM |
10980 | if (s == NULL) |
10981 | continue; | |
eea6121a | 10982 | dyn.d_un.d_val -= s->size; |
6348e046 AM |
10983 | break; |
10984 | ||
10985 | case DT_RELA: | |
10986 | /* We may not be using the standard ELF linker script. | |
10987 | If .rela.plt is the first .rela section, we adjust | |
10988 | DT_RELA to not include it. */ | |
4ce794b7 | 10989 | s = htab->relplt; |
6348e046 AM |
10990 | if (s == NULL) |
10991 | continue; | |
10992 | if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset) | |
10993 | continue; | |
eea6121a | 10994 | dyn.d_un.d_ptr += s->size; |
65f38f15 | 10995 | break; |
5bd4f169 | 10996 | } |
5bd4f169 | 10997 | |
65f38f15 | 10998 | bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); |
5bd4f169 | 10999 | } |
5bd4f169 AM |
11000 | } |
11001 | ||
eea6121a | 11002 | if (htab->got != NULL && htab->got->size != 0) |
5d1634d7 AM |
11003 | { |
11004 | /* Fill in the first entry in the global offset table. | |
11005 | We use it to hold the link-time TOCbase. */ | |
11006 | bfd_put_64 (output_bfd, | |
60ee0d4a | 11007 | elf_gp (output_bfd) + TOC_BASE_OFF, |
4ce794b7 | 11008 | htab->got->contents); |
5d1634d7 AM |
11009 | |
11010 | /* Set .got entry size. */ | |
4ce794b7 | 11011 | elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 8; |
5d1634d7 AM |
11012 | } |
11013 | ||
eea6121a | 11014 | if (htab->plt != NULL && htab->plt->size != 0) |
5d1634d7 AM |
11015 | { |
11016 | /* Set .plt entry size. */ | |
4ce794b7 | 11017 | elf_section_data (htab->plt->output_section)->this_hdr.sh_entsize |
5d1634d7 AM |
11018 | = PLT_ENTRY_SIZE; |
11019 | } | |
11020 | ||
e717da7e | 11021 | /* We need to handle writing out multiple GOT sections ourselves, |
7b53ace3 AM |
11022 | since we didn't add them to DYNOBJ. We know dynobj is the first |
11023 | bfd. */ | |
e717da7e AM |
11024 | while ((dynobj = dynobj->link_next) != NULL) |
11025 | { | |
11026 | asection *s; | |
7b53ace3 | 11027 | |
ee75fd95 | 11028 | if (!is_ppc64_elf_target (dynobj->xvec)) |
7b53ace3 AM |
11029 | continue; |
11030 | ||
e717da7e AM |
11031 | s = ppc64_elf_tdata (dynobj)->got; |
11032 | if (s != NULL | |
eea6121a | 11033 | && s->size != 0 |
e717da7e AM |
11034 | && s->output_section != bfd_abs_section_ptr |
11035 | && !bfd_set_section_contents (output_bfd, s->output_section, | |
11036 | s->contents, s->output_offset, | |
eea6121a | 11037 | s->size)) |
e717da7e AM |
11038 | return FALSE; |
11039 | s = ppc64_elf_tdata (dynobj)->relgot; | |
11040 | if (s != NULL | |
eea6121a | 11041 | && s->size != 0 |
e717da7e AM |
11042 | && s->output_section != bfd_abs_section_ptr |
11043 | && !bfd_set_section_contents (output_bfd, s->output_section, | |
11044 | s->contents, s->output_offset, | |
eea6121a | 11045 | s->size)) |
e717da7e AM |
11046 | return FALSE; |
11047 | } | |
f6c52c13 | 11048 | |
b34976b6 | 11049 | return TRUE; |
5bd4f169 AM |
11050 | } |
11051 | ||
5bd4f169 | 11052 | #include "elf64-target.h" |