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 | ||
433817dd AM |
2372 | union { |
2373 | /* Used during garbage collection. We attach global symbols defined | |
2374 | on removed .opd entries to this section so that the sym is removed. */ | |
2375 | asection *deleted_section; | |
2376 | ||
2377 | /* Used when adding symbols. */ | |
2378 | bfd_boolean has_dotsym; | |
2379 | } u; | |
81688140 | 2380 | |
e717da7e AM |
2381 | /* TLS local dynamic got entry handling. Suppose for multiple GOT |
2382 | sections means we potentially need one of these for each input bfd. */ | |
2383 | union { | |
2384 | bfd_signed_vma refcount; | |
2385 | bfd_vma offset; | |
2386 | } tlsld_got; | |
8860955f AM |
2387 | |
2388 | /* A copy of relocs before they are modified for --emit-relocs. */ | |
2389 | Elf_Internal_Rela *opd_relocs; | |
e717da7e AM |
2390 | }; |
2391 | ||
2392 | #define ppc64_elf_tdata(bfd) \ | |
2393 | ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any) | |
2394 | ||
2395 | #define ppc64_tlsld_got(bfd) \ | |
2396 | (&ppc64_elf_tdata (bfd)->tlsld_got) | |
2397 | ||
2398 | /* Override the generic function because we store some extras. */ | |
2399 | ||
2400 | static bfd_boolean | |
2401 | ppc64_elf_mkobject (bfd *abfd) | |
2402 | { | |
2403 | bfd_size_type amt = sizeof (struct ppc64_elf_obj_tdata); | |
2404 | abfd->tdata.any = bfd_zalloc (abfd, amt); | |
2405 | if (abfd->tdata.any == NULL) | |
2406 | return FALSE; | |
2407 | return TRUE; | |
2408 | } | |
2409 | ||
ee75fd95 AM |
2410 | /* Return 1 if target is one of ours. */ |
2411 | ||
7b53ace3 | 2412 | static bfd_boolean |
ee75fd95 | 2413 | is_ppc64_elf_target (const struct bfd_target *targ) |
7b53ace3 AM |
2414 | { |
2415 | extern const bfd_target bfd_elf64_powerpc_vec; | |
2416 | extern const bfd_target bfd_elf64_powerpcle_vec; | |
2417 | ||
2418 | return targ == &bfd_elf64_powerpc_vec || targ == &bfd_elf64_powerpcle_vec; | |
2419 | } | |
2420 | ||
feee612b AM |
2421 | /* Fix bad default arch selected for a 64 bit input bfd when the |
2422 | default is 32 bit. */ | |
2423 | ||
b34976b6 | 2424 | static bfd_boolean |
4ce794b7 | 2425 | ppc64_elf_object_p (bfd *abfd) |
feee612b AM |
2426 | { |
2427 | if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 32) | |
2428 | { | |
2429 | Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd); | |
2430 | ||
2431 | if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS64) | |
2432 | { | |
2433 | /* Relies on arch after 32 bit default being 64 bit default. */ | |
2434 | abfd->arch_info = abfd->arch_info->next; | |
2435 | BFD_ASSERT (abfd->arch_info->bits_per_word == 64); | |
2436 | } | |
2437 | } | |
b34976b6 | 2438 | return TRUE; |
feee612b AM |
2439 | } |
2440 | ||
d37c89e5 AM |
2441 | /* Support for core dump NOTE sections. */ |
2442 | ||
2443 | static bfd_boolean | |
2444 | ppc64_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) | |
2445 | { | |
eea6121a | 2446 | size_t offset, size; |
d37c89e5 AM |
2447 | |
2448 | if (note->descsz != 504) | |
2449 | return FALSE; | |
2450 | ||
2451 | /* pr_cursig */ | |
2452 | elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12); | |
2453 | ||
2454 | /* pr_pid */ | |
2455 | elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 32); | |
2456 | ||
2457 | /* pr_reg */ | |
2458 | offset = 112; | |
eea6121a | 2459 | size = 384; |
d37c89e5 AM |
2460 | |
2461 | /* Make a ".reg/999" section. */ | |
2462 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", | |
eea6121a | 2463 | size, note->descpos + offset); |
d37c89e5 AM |
2464 | } |
2465 | ||
2466 | static bfd_boolean | |
2467 | ppc64_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) | |
2468 | { | |
2469 | if (note->descsz != 136) | |
2470 | return FALSE; | |
2471 | ||
2472 | elf_tdata (abfd)->core_program | |
2473 | = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16); | |
2474 | elf_tdata (abfd)->core_command | |
2475 | = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80); | |
2476 | ||
2477 | return TRUE; | |
2478 | } | |
2479 | ||
5bd4f169 AM |
2480 | /* Merge backend specific data from an object file to the output |
2481 | object file when linking. */ | |
2f6d9989 | 2482 | |
b34976b6 | 2483 | static bfd_boolean |
4ce794b7 | 2484 | ppc64_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd) |
5bd4f169 | 2485 | { |
5bd4f169 AM |
2486 | /* Check if we have the same endianess. */ |
2487 | if (ibfd->xvec->byteorder != obfd->xvec->byteorder | |
87e226ce | 2488 | && ibfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN |
5bd4f169 AM |
2489 | && obfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN) |
2490 | { | |
2491 | const char *msg; | |
2492 | ||
2493 | if (bfd_big_endian (ibfd)) | |
d003868e | 2494 | msg = _("%B: compiled for a big endian system " |
4ce794b7 | 2495 | "and target is little endian"); |
5bd4f169 | 2496 | else |
d003868e | 2497 | msg = _("%B: compiled for a little endian system " |
4ce794b7 | 2498 | "and target is big endian"); |
5bd4f169 | 2499 | |
d003868e | 2500 | (*_bfd_error_handler) (msg, ibfd); |
5bd4f169 AM |
2501 | |
2502 | bfd_set_error (bfd_error_wrong_format); | |
b34976b6 | 2503 | return FALSE; |
5bd4f169 AM |
2504 | } |
2505 | ||
b34976b6 | 2506 | return TRUE; |
5bd4f169 | 2507 | } |
f0abc2a1 | 2508 | |
5d35169e AM |
2509 | /* Add extra PPC sections. */ |
2510 | ||
7f4d3958 L |
2511 | static struct bfd_elf_special_section const |
2512 | ppc64_special_sections_p[]= | |
2513 | { | |
2514 | { ".plt", 4, 0, SHT_NOBITS, 0 }, | |
2515 | { NULL, 0, 0, 0, 0 } | |
2516 | }; | |
2517 | ||
2518 | static struct bfd_elf_special_section const | |
2519 | ppc64_special_sections_s[]= | |
5d35169e | 2520 | { |
7dcb9820 AM |
2521 | { ".sdata", 6, -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, |
2522 | { ".sbss", 5, -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, | |
7f4d3958 L |
2523 | { NULL, 0, 0, 0, 0 } |
2524 | }; | |
2525 | ||
2526 | static struct bfd_elf_special_section const | |
2527 | ppc64_special_sections_t[]= | |
2528 | { | |
7dcb9820 AM |
2529 | { ".toc", 4, 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, |
2530 | { ".toc1", 5, 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
2531 | { ".tocbss", 7, 0, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, | |
2532 | { NULL, 0, 0, 0, 0 } | |
5d35169e AM |
2533 | }; |
2534 | ||
7f4d3958 L |
2535 | static struct bfd_elf_special_section const * |
2536 | ppc64_elf_special_sections[27]= | |
2537 | { | |
2538 | NULL, /* 'a' */ | |
2539 | NULL, /* 'b' */ | |
2540 | NULL, /* 'c' */ | |
2541 | NULL, /* 'd' */ | |
2542 | NULL, /* 'e' */ | |
2543 | NULL, /* 'f' */ | |
2544 | NULL, /* 'g' */ | |
2545 | NULL, /* 'h' */ | |
2546 | NULL, /* 'i' */ | |
2547 | NULL, /* 'j' */ | |
2548 | NULL, /* 'k' */ | |
2549 | NULL, /* 'l' */ | |
2550 | NULL, /* 'm' */ | |
2551 | NULL, /* 'n' */ | |
2552 | NULL, /* 'o' */ | |
2553 | ppc64_special_sections_p, /* 'p' */ | |
2554 | NULL, /* 'q' */ | |
2555 | NULL, /* 'r' */ | |
2556 | ppc64_special_sections_s, /* 's' */ | |
2557 | ppc64_special_sections_t, /* 't' */ | |
2558 | NULL, /* 'u' */ | |
2559 | NULL, /* 'v' */ | |
2560 | NULL, /* 'w' */ | |
2561 | NULL, /* 'x' */ | |
2562 | NULL, /* 'y' */ | |
2563 | NULL, /* 'z' */ | |
2564 | NULL /* other */ | |
2565 | }; | |
2566 | ||
f0abc2a1 AM |
2567 | struct _ppc64_elf_section_data |
2568 | { | |
2569 | struct bfd_elf_section_data elf; | |
411e1bfb AM |
2570 | |
2571 | /* An array with one entry for each opd function descriptor. */ | |
f0abc2a1 AM |
2572 | union |
2573 | { | |
411e1bfb | 2574 | /* Points to the function code section for local opd entries. */ |
f0abc2a1 | 2575 | asection **func_sec; |
411e1bfb | 2576 | /* After editing .opd, adjust references to opd local syms. */ |
f0abc2a1 AM |
2577 | long *adjust; |
2578 | } opd; | |
411e1bfb AM |
2579 | |
2580 | /* An array for toc sections, indexed by offset/8. | |
2581 | Specifies the relocation symbol index used at a given toc offset. */ | |
2582 | unsigned *t_symndx; | |
f0abc2a1 AM |
2583 | }; |
2584 | ||
2585 | #define ppc64_elf_section_data(sec) \ | |
411e1bfb | 2586 | ((struct _ppc64_elf_section_data *) elf_section_data (sec)) |
f0abc2a1 AM |
2587 | |
2588 | static bfd_boolean | |
4ce794b7 | 2589 | ppc64_elf_new_section_hook (bfd *abfd, asection *sec) |
f0abc2a1 AM |
2590 | { |
2591 | struct _ppc64_elf_section_data *sdata; | |
2592 | bfd_size_type amt = sizeof (*sdata); | |
2593 | ||
4ce794b7 | 2594 | sdata = bfd_zalloc (abfd, amt); |
f0abc2a1 AM |
2595 | if (sdata == NULL) |
2596 | return FALSE; | |
4ce794b7 | 2597 | sec->used_by_bfd = sdata; |
f0abc2a1 AM |
2598 | |
2599 | return _bfd_elf_new_section_hook (abfd, sec); | |
2600 | } | |
4025353c AM |
2601 | |
2602 | static void * | |
2603 | get_opd_info (asection * sec) | |
2604 | { | |
2605 | if (sec != NULL | |
2606 | && ppc64_elf_section_data (sec) != NULL | |
2607 | && ppc64_elf_section_data (sec)->opd.adjust != NULL) | |
2608 | return ppc64_elf_section_data (sec)->opd.adjust; | |
2609 | return NULL; | |
2610 | } | |
90e3cdf2 JJ |
2611 | \f |
2612 | /* Parameters for the qsort hook. */ | |
2613 | static asection *synthetic_opd; | |
2614 | static bfd_boolean synthetic_relocatable; | |
2615 | ||
699733f6 | 2616 | /* qsort comparison function for ppc64_elf_get_synthetic_symtab. */ |
90e3cdf2 JJ |
2617 | |
2618 | static int | |
2619 | compare_symbols (const void *ap, const void *bp) | |
2620 | { | |
2621 | const asymbol *a = * (const asymbol **) ap; | |
2622 | const asymbol *b = * (const asymbol **) bp; | |
2623 | ||
699733f6 AM |
2624 | /* Section symbols first. */ |
2625 | if ((a->flags & BSF_SECTION_SYM) && !(b->flags & BSF_SECTION_SYM)) | |
90e3cdf2 | 2626 | return -1; |
699733f6 | 2627 | if (!(a->flags & BSF_SECTION_SYM) && (b->flags & BSF_SECTION_SYM)) |
90e3cdf2 JJ |
2628 | return 1; |
2629 | ||
699733f6 | 2630 | /* then .opd symbols. */ |
90e3cdf2 JJ |
2631 | if (a->section == synthetic_opd && b->section != synthetic_opd) |
2632 | return -1; | |
2633 | if (a->section != synthetic_opd && b->section == synthetic_opd) | |
2634 | return 1; | |
2635 | ||
699733f6 | 2636 | /* then other code symbols. */ |
90e3cdf2 JJ |
2637 | if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) |
2638 | == (SEC_CODE | SEC_ALLOC) | |
2639 | && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
2640 | != (SEC_CODE | SEC_ALLOC)) | |
2641 | return -1; | |
2642 | ||
2643 | if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
2644 | != (SEC_CODE | SEC_ALLOC) | |
2645 | && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
2646 | == (SEC_CODE | SEC_ALLOC)) | |
2647 | return 1; | |
2648 | ||
2649 | if (synthetic_relocatable) | |
2650 | { | |
2651 | if (a->section->id < b->section->id) | |
2652 | return -1; | |
2653 | ||
2654 | if (a->section->id > b->section->id) | |
2655 | return 1; | |
2656 | } | |
2657 | ||
2658 | if (a->value + a->section->vma < b->value + b->section->vma) | |
2659 | return -1; | |
2660 | ||
2661 | if (a->value + a->section->vma > b->value + b->section->vma) | |
2662 | return 1; | |
2663 | ||
2664 | return 0; | |
2665 | } | |
2666 | ||
699733f6 | 2667 | /* Search SYMS for a symbol of the given VALUE. */ |
90e3cdf2 | 2668 | |
699733f6 AM |
2669 | static asymbol * |
2670 | sym_exists_at (asymbol **syms, long lo, long hi, int id, bfd_vma value) | |
90e3cdf2 | 2671 | { |
699733f6 | 2672 | long mid; |
90e3cdf2 | 2673 | |
699733f6 AM |
2674 | if (id == -1) |
2675 | { | |
2676 | while (lo < hi) | |
2677 | { | |
2678 | mid = (lo + hi) >> 1; | |
2679 | if (syms[mid]->value + syms[mid]->section->vma < value) | |
2680 | lo = mid + 1; | |
2681 | else if (syms[mid]->value + syms[mid]->section->vma > value) | |
2682 | hi = mid; | |
2683 | else | |
2684 | return syms[mid]; | |
2685 | } | |
2686 | } | |
2687 | else | |
2688 | { | |
2689 | while (lo < hi) | |
2690 | { | |
2691 | mid = (lo + hi) >> 1; | |
2692 | if (syms[mid]->section->id < id) | |
2693 | lo = mid + 1; | |
2694 | else if (syms[mid]->section->id > id) | |
2695 | hi = mid; | |
2696 | else if (syms[mid]->value < value) | |
2697 | lo = mid + 1; | |
2698 | else if (syms[mid]->value > value) | |
2699 | hi = mid; | |
2700 | else | |
2701 | return syms[mid]; | |
2702 | } | |
2703 | } | |
2704 | return NULL; | |
90e3cdf2 JJ |
2705 | } |
2706 | ||
699733f6 AM |
2707 | /* Create synthetic symbols, effectively restoring "dot-symbol" function |
2708 | entry syms. */ | |
90e3cdf2 JJ |
2709 | |
2710 | static long | |
a7535cf3 AM |
2711 | ppc64_elf_get_synthetic_symtab (bfd *abfd, |
2712 | long static_count, asymbol **static_syms, | |
2713 | long dyn_count, asymbol **dyn_syms, | |
c9727e01 | 2714 | asymbol **ret) |
90e3cdf2 JJ |
2715 | { |
2716 | asymbol *s; | |
699733f6 AM |
2717 | long i; |
2718 | long count; | |
90e3cdf2 | 2719 | char *names; |
a7535cf3 | 2720 | long symcount, codesecsym, codesecsymend, secsymend, opdsymend; |
699733f6 | 2721 | asection *opd; |
90e3cdf2 | 2722 | bfd_boolean relocatable = (abfd->flags & (EXEC_P | DYNAMIC)) == 0; |
a7535cf3 | 2723 | asymbol **syms; |
90e3cdf2 JJ |
2724 | |
2725 | *ret = NULL; | |
2726 | ||
2727 | opd = bfd_get_section_by_name (abfd, ".opd"); | |
2728 | if (opd == NULL) | |
2729 | return 0; | |
2730 | ||
a7535cf3 | 2731 | symcount = static_count; |
c9727e01 | 2732 | if (!relocatable) |
a7535cf3 | 2733 | symcount += dyn_count; |
90e3cdf2 | 2734 | if (symcount == 0) |
c9727e01 | 2735 | return 0; |
90e3cdf2 | 2736 | |
a7535cf3 AM |
2737 | syms = bfd_malloc ((symcount + 1) * sizeof (*syms)); |
2738 | if (syms == NULL) | |
7356fed5 | 2739 | return -1; |
a7535cf3 AM |
2740 | |
2741 | if (!relocatable && static_count != 0 && dyn_count != 0) | |
2742 | { | |
2743 | /* Use both symbol tables. */ | |
2744 | memcpy (syms, static_syms, static_count * sizeof (*syms)); | |
2745 | memcpy (syms + static_count, dyn_syms, (dyn_count + 1) * sizeof (*syms)); | |
2746 | } | |
2747 | else if (!relocatable && static_count == 0) | |
2748 | memcpy (syms, dyn_syms, (symcount + 1) * sizeof (*syms)); | |
2749 | else | |
2750 | memcpy (syms, static_syms, (symcount + 1) * sizeof (*syms)); | |
2751 | ||
90e3cdf2 JJ |
2752 | synthetic_opd = opd; |
2753 | synthetic_relocatable = relocatable; | |
595da8c5 | 2754 | qsort (syms, symcount, sizeof (*syms), compare_symbols); |
90e3cdf2 | 2755 | |
c9727e01 AM |
2756 | if (!relocatable && symcount > 1) |
2757 | { | |
2758 | long j; | |
2759 | /* Trim duplicate syms, since we may have merged the normal and | |
2760 | dynamic symbols. Actually, we only care about syms that have | |
3b36f7e6 | 2761 | different values, so trim any with the same value. */ |
c9727e01 AM |
2762 | for (i = 1, j = 1; i < symcount; ++i) |
2763 | if (syms[i - 1]->value + syms[i - 1]->section->vma | |
2764 | != syms[i]->value + syms[i]->section->vma) | |
2765 | syms[j++] = syms[i]; | |
2766 | symcount = j; | |
2767 | } | |
2768 | ||
699733f6 AM |
2769 | i = 0; |
2770 | if (syms[i]->section == opd) | |
2771 | ++i; | |
2772 | codesecsym = i; | |
90e3cdf2 | 2773 | |
699733f6 AM |
2774 | for (; i < symcount; ++i) |
2775 | if (((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
2776 | != (SEC_CODE | SEC_ALLOC)) | |
2777 | || (syms[i]->flags & BSF_SECTION_SYM) == 0) | |
2778 | break; | |
2779 | codesecsymend = i; | |
90e3cdf2 | 2780 | |
699733f6 AM |
2781 | for (; i < symcount; ++i) |
2782 | if ((syms[i]->flags & BSF_SECTION_SYM) == 0) | |
2783 | break; | |
2784 | secsymend = i; | |
90e3cdf2 | 2785 | |
699733f6 AM |
2786 | for (; i < symcount; ++i) |
2787 | if (syms[i]->section != opd) | |
2788 | break; | |
2789 | opdsymend = i; | |
90e3cdf2 | 2790 | |
699733f6 AM |
2791 | for (; i < symcount; ++i) |
2792 | if ((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
2793 | != (SEC_CODE | SEC_ALLOC)) | |
2794 | break; | |
2795 | symcount = i; | |
2796 | ||
c9727e01 | 2797 | count = 0; |
699733f6 | 2798 | if (opdsymend == secsymend) |
c9727e01 | 2799 | goto done; |
90e3cdf2 | 2800 | |
699733f6 | 2801 | if (relocatable) |
90e3cdf2 | 2802 | { |
699733f6 AM |
2803 | bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean); |
2804 | arelent *r; | |
2805 | size_t size; | |
2806 | long relcount; | |
90e3cdf2 | 2807 | |
699733f6 | 2808 | slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; |
90e3cdf2 | 2809 | relcount = (opd->flags & SEC_RELOC) ? opd->reloc_count : 0; |
7356fed5 | 2810 | if (relcount == 0) |
c9727e01 | 2811 | goto done; |
90e3cdf2 | 2812 | |
7356fed5 AM |
2813 | if (!(*slurp_relocs) (abfd, opd, static_syms, FALSE)) |
2814 | { | |
2815 | count = -1; | |
2816 | goto done; | |
2817 | } | |
2818 | ||
699733f6 | 2819 | size = 0; |
595da8c5 | 2820 | for (i = secsymend, r = opd->relocation; i < opdsymend; ++i) |
699733f6 AM |
2821 | { |
2822 | asymbol *sym; | |
90e3cdf2 | 2823 | |
595da8c5 | 2824 | while (r < opd->relocation + relcount |
699733f6 AM |
2825 | && r->address < syms[i]->value + opd->vma) |
2826 | ++r; | |
90e3cdf2 | 2827 | |
595da8c5 | 2828 | if (r == opd->relocation + relcount) |
699733f6 | 2829 | break; |
90e3cdf2 | 2830 | |
699733f6 AM |
2831 | if (r->address != syms[i]->value + opd->vma) |
2832 | continue; | |
90e3cdf2 | 2833 | |
699733f6 AM |
2834 | if (r->howto->type != R_PPC64_ADDR64) |
2835 | continue; | |
90e3cdf2 | 2836 | |
699733f6 AM |
2837 | sym = *r->sym_ptr_ptr; |
2838 | if (!sym_exists_at (syms, opdsymend, symcount, | |
2839 | sym->section->id, sym->value + r->addend)) | |
2840 | { | |
2841 | ++count; | |
2842 | size += sizeof (asymbol); | |
2843 | size += strlen (syms[i]->name) + 2; | |
2844 | } | |
2845 | } | |
90e3cdf2 | 2846 | |
699733f6 AM |
2847 | s = *ret = bfd_malloc (size); |
2848 | if (s == NULL) | |
2849 | { | |
7356fed5 | 2850 | count = -1; |
c9727e01 | 2851 | goto done; |
699733f6 | 2852 | } |
90e3cdf2 | 2853 | |
699733f6 | 2854 | names = (char *) (s + count); |
90e3cdf2 | 2855 | |
595da8c5 | 2856 | for (i = secsymend, r = opd->relocation; i < opdsymend; ++i) |
90e3cdf2 | 2857 | { |
699733f6 | 2858 | asymbol *sym; |
90e3cdf2 | 2859 | |
595da8c5 | 2860 | while (r < opd->relocation + relcount |
699733f6 AM |
2861 | && r->address < syms[i]->value + opd->vma) |
2862 | ++r; | |
90e3cdf2 | 2863 | |
595da8c5 | 2864 | if (r == opd->relocation + relcount) |
699733f6 AM |
2865 | break; |
2866 | ||
2867 | if (r->address != syms[i]->value + opd->vma) | |
2868 | continue; | |
2869 | ||
2870 | if (r->howto->type != R_PPC64_ADDR64) | |
2871 | continue; | |
90e3cdf2 | 2872 | |
699733f6 AM |
2873 | sym = *r->sym_ptr_ptr; |
2874 | if (!sym_exists_at (syms, opdsymend, symcount, | |
2875 | sym->section->id, sym->value + r->addend)) | |
2876 | { | |
2877 | size_t len; | |
2878 | ||
2879 | *s = *syms[i]; | |
2880 | s->section = sym->section; | |
2881 | s->value = sym->value + r->addend; | |
2882 | s->name = names; | |
2883 | *names++ = '.'; | |
2884 | len = strlen (syms[i]->name); | |
2885 | memcpy (names, syms[i]->name, len + 1); | |
2886 | names += len + 1; | |
2887 | s++; | |
2888 | } | |
2889 | } | |
2890 | } | |
2891 | else | |
90e3cdf2 | 2892 | { |
699733f6 AM |
2893 | bfd_byte *contents; |
2894 | size_t size; | |
90e3cdf2 | 2895 | |
699733f6 AM |
2896 | if (!bfd_malloc_and_get_section (abfd, opd, &contents)) |
2897 | { | |
2898 | if (contents) | |
c9727e01 AM |
2899 | { |
2900 | free_contents_and_exit: | |
2901 | free (contents); | |
2902 | } | |
7356fed5 | 2903 | count = -1; |
c9727e01 | 2904 | goto done; |
699733f6 | 2905 | } |
90e3cdf2 | 2906 | |
699733f6 AM |
2907 | size = 0; |
2908 | for (i = secsymend; i < opdsymend; ++i) | |
2909 | { | |
2910 | bfd_vma ent; | |
90e3cdf2 | 2911 | |
699733f6 AM |
2912 | ent = bfd_get_64 (abfd, contents + syms[i]->value); |
2913 | if (!sym_exists_at (syms, opdsymend, symcount, -1, ent)) | |
2914 | { | |
2915 | ++count; | |
2916 | size += sizeof (asymbol); | |
2917 | size += strlen (syms[i]->name) + 2; | |
2918 | } | |
2919 | } | |
90e3cdf2 | 2920 | |
699733f6 AM |
2921 | s = *ret = bfd_malloc (size); |
2922 | if (s == NULL) | |
7356fed5 | 2923 | goto free_contents_and_exit; |
90e3cdf2 | 2924 | |
699733f6 | 2925 | names = (char *) (s + count); |
90e3cdf2 | 2926 | |
699733f6 | 2927 | for (i = secsymend; i < opdsymend; ++i) |
90e3cdf2 | 2928 | { |
699733f6 | 2929 | bfd_vma ent; |
90e3cdf2 | 2930 | |
699733f6 AM |
2931 | ent = bfd_get_64 (abfd, contents + syms[i]->value); |
2932 | if (!sym_exists_at (syms, opdsymend, symcount, -1, ent)) | |
90e3cdf2 | 2933 | { |
c9727e01 | 2934 | long lo, hi; |
699733f6 | 2935 | size_t len; |
c9727e01 | 2936 | asection *sec = abfd->sections; |
90e3cdf2 | 2937 | |
699733f6 AM |
2938 | *s = *syms[i]; |
2939 | lo = codesecsym; | |
2940 | hi = codesecsymend; | |
2941 | while (lo < hi) | |
2942 | { | |
c9727e01 | 2943 | long mid = (lo + hi) >> 1; |
699733f6 AM |
2944 | if (syms[mid]->section->vma < ent) |
2945 | lo = mid + 1; | |
2946 | else if (syms[mid]->section->vma > ent) | |
2947 | hi = mid; | |
2948 | else | |
c9727e01 AM |
2949 | { |
2950 | sec = syms[mid]->section; | |
2951 | break; | |
2952 | } | |
699733f6 AM |
2953 | } |
2954 | ||
c9727e01 | 2955 | if (lo >= hi && lo > codesecsym) |
699733f6 | 2956 | sec = syms[lo - 1]->section; |
699733f6 AM |
2957 | |
2958 | for (; sec != NULL; sec = sec->next) | |
2959 | { | |
2960 | if (sec->vma > ent) | |
2961 | break; | |
2962 | if ((sec->flags & SEC_ALLOC) == 0 | |
2963 | || (sec->flags & SEC_LOAD) == 0) | |
2964 | break; | |
2965 | if ((sec->flags & SEC_CODE) != 0) | |
2966 | s->section = sec; | |
2967 | } | |
2968 | s->value = ent - s->section->vma; | |
2969 | s->name = names; | |
2970 | *names++ = '.'; | |
2971 | len = strlen (syms[i]->name); | |
2972 | memcpy (names, syms[i]->name, len + 1); | |
2973 | names += len + 1; | |
2974 | s++; | |
90e3cdf2 | 2975 | } |
90e3cdf2 | 2976 | } |
699733f6 | 2977 | free (contents); |
90e3cdf2 JJ |
2978 | } |
2979 | ||
c9727e01 | 2980 | done: |
a7535cf3 | 2981 | free (syms); |
90e3cdf2 JJ |
2982 | return count; |
2983 | } | |
5bd4f169 | 2984 | \f |
65f38f15 AM |
2985 | /* The following functions are specific to the ELF linker, while |
2986 | functions above are used generally. Those named ppc64_elf_* are | |
2987 | called by the main ELF linker code. They appear in this file more | |
2988 | or less in the order in which they are called. eg. | |
2989 | ppc64_elf_check_relocs is called early in the link process, | |
2990 | ppc64_elf_finish_dynamic_sections is one of the last functions | |
e86ce104 AM |
2991 | called. |
2992 | ||
2993 | PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that | |
2994 | functions have both a function code symbol and a function descriptor | |
2995 | symbol. A call to foo in a relocatable object file looks like: | |
2996 | ||
2997 | . .text | |
2998 | . x: | |
2999 | . bl .foo | |
3000 | . nop | |
3001 | ||
3002 | The function definition in another object file might be: | |
3003 | ||
3004 | . .section .opd | |
3005 | . foo: .quad .foo | |
3006 | . .quad .TOC.@tocbase | |
3007 | . .quad 0 | |
3008 | . | |
3009 | . .text | |
3010 | . .foo: blr | |
3011 | ||
3012 | When the linker resolves the call during a static link, the branch | |
3013 | unsurprisingly just goes to .foo and the .opd information is unused. | |
3014 | If the function definition is in a shared library, things are a little | |
3015 | different: The call goes via a plt call stub, the opd information gets | |
3016 | copied to the plt, and the linker patches the nop. | |
3017 | ||
3018 | . x: | |
3019 | . bl .foo_stub | |
3020 | . ld 2,40(1) | |
3021 | . | |
3022 | . | |
3023 | . .foo_stub: | |
3024 | . addis 12,2,Lfoo@toc@ha # in practice, the call stub | |
411e1bfb | 3025 | . addi 12,12,Lfoo@toc@l # is slightly optimized, but |
e86ce104 AM |
3026 | . std 2,40(1) # this is the general idea |
3027 | . ld 11,0(12) | |
3028 | . ld 2,8(12) | |
3029 | . mtctr 11 | |
3030 | . ld 11,16(12) | |
3031 | . bctr | |
3032 | . | |
3033 | . .section .plt | |
3034 | . Lfoo: reloc (R_PPC64_JMP_SLOT, foo) | |
3035 | ||
3036 | The "reloc ()" notation is supposed to indicate that the linker emits | |
3037 | an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd | |
3038 | copying. | |
3039 | ||
3040 | What are the difficulties here? Well, firstly, the relocations | |
3041 | examined by the linker in check_relocs are against the function code | |
3042 | sym .foo, while the dynamic relocation in the plt is emitted against | |
3043 | the function descriptor symbol, foo. Somewhere along the line, we need | |
3044 | to carefully copy dynamic link information from one symbol to the other. | |
3045 | Secondly, the generic part of the elf linker will make .foo a dynamic | |
3046 | symbol as is normal for most other backends. We need foo dynamic | |
3047 | instead, at least for an application final link. However, when | |
3048 | creating a shared library containing foo, we need to have both symbols | |
3049 | dynamic so that references to .foo are satisfied during the early | |
3050 | stages of linking. Otherwise the linker might decide to pull in a | |
8387904d AM |
3051 | definition from some other object, eg. a static library. |
3052 | ||
3053 | Update: As of August 2004, we support a new convention. Function | |
3054 | calls may use the function descriptor symbol, ie. "bl foo". This | |
3055 | behaves exactly as "bl .foo". */ | |
65f38f15 AM |
3056 | |
3057 | /* The linker needs to keep track of the number of relocs that it | |
3058 | decides to copy as dynamic relocs in check_relocs for each symbol. | |
3059 | This is so that it can later discard them if they are found to be | |
3060 | unnecessary. We store the information in a field extending the | |
3061 | regular ELF linker hash table. */ | |
3062 | ||
3063 | struct ppc_dyn_relocs | |
3064 | { | |
3065 | struct ppc_dyn_relocs *next; | |
3066 | ||
3067 | /* The input section of the reloc. */ | |
3068 | asection *sec; | |
3069 | ||
3070 | /* Total number of relocs copied for the input section. */ | |
3071 | bfd_size_type count; | |
3072 | ||
3073 | /* Number of pc-relative relocs copied for the input section. */ | |
3074 | bfd_size_type pc_count; | |
3075 | }; | |
3076 | ||
411e1bfb AM |
3077 | /* Track GOT entries needed for a given symbol. We might need more |
3078 | than one got entry per symbol. */ | |
3079 | struct got_entry | |
3080 | { | |
3081 | struct got_entry *next; | |
3082 | ||
e7b938ca | 3083 | /* The symbol addend that we'll be placing in the GOT. */ |
411e1bfb AM |
3084 | bfd_vma addend; |
3085 | ||
e717da7e AM |
3086 | /* Unlike other ELF targets, we use separate GOT entries for the same |
3087 | symbol referenced from different input files. This is to support | |
3088 | automatic multiple TOC/GOT sections, where the TOC base can vary | |
3089 | from one input file to another. | |
3090 | ||
3091 | Point to the BFD owning this GOT entry. */ | |
3092 | bfd *owner; | |
3093 | ||
3094 | /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD, | |
3095 | TLS_TPREL or TLS_DTPREL for tls entries. */ | |
3096 | char tls_type; | |
3097 | ||
e7b938ca | 3098 | /* Reference count until size_dynamic_sections, GOT offset thereafter. */ |
411e1bfb AM |
3099 | union |
3100 | { | |
3101 | bfd_signed_vma refcount; | |
3102 | bfd_vma offset; | |
3103 | } got; | |
411e1bfb AM |
3104 | }; |
3105 | ||
3106 | /* The same for PLT. */ | |
3107 | struct plt_entry | |
3108 | { | |
3109 | struct plt_entry *next; | |
3110 | ||
3111 | bfd_vma addend; | |
3112 | ||
3113 | union | |
3114 | { | |
3115 | bfd_signed_vma refcount; | |
3116 | bfd_vma offset; | |
3117 | } plt; | |
3118 | }; | |
3119 | ||
65f38f15 | 3120 | /* Of those relocs that might be copied as dynamic relocs, this macro |
58ac9f71 AM |
3121 | selects those that must be copied when linking a shared library, |
3122 | even when the symbol is local. */ | |
65f38f15 | 3123 | |
411e1bfb | 3124 | #define MUST_BE_DYN_RELOC(RTYPE) \ |
805fc799 AM |
3125 | ((RTYPE) != R_PPC64_REL32 \ |
3126 | && (RTYPE) != R_PPC64_REL64 \ | |
04c9666a | 3127 | && (RTYPE) != R_PPC64_REL30) |
65f38f15 | 3128 | |
f4656909 AM |
3129 | /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid |
3130 | copying dynamic variables from a shared lib into an app's dynbss | |
3131 | section, and instead use a dynamic relocation to point into the | |
5d35169e AM |
3132 | shared lib. With code that gcc generates, it's vital that this be |
3133 | enabled; In the PowerPC64 ABI, the address of a function is actually | |
3134 | the address of a function descriptor, which resides in the .opd | |
3135 | section. gcc uses the descriptor directly rather than going via the | |
3136 | GOT as some other ABI's do, which means that initialized function | |
3137 | pointers must reference the descriptor. Thus, a function pointer | |
3138 | initialized to the address of a function in a shared library will | |
3139 | either require a copy reloc, or a dynamic reloc. Using a copy reloc | |
4cc11e76 | 3140 | redefines the function descriptor symbol to point to the copy. This |
5d35169e AM |
3141 | presents a problem as a plt entry for that function is also |
3142 | initialized from the function descriptor symbol and the copy reloc | |
3143 | may not be initialized first. */ | |
a23b6845 | 3144 | #define ELIMINATE_COPY_RELOCS 1 |
f4656909 | 3145 | |
721956f4 AM |
3146 | /* Section name for stubs is the associated section name plus this |
3147 | string. */ | |
3148 | #define STUB_SUFFIX ".stub" | |
3149 | ||
3150 | /* Linker stubs. | |
3151 | ppc_stub_long_branch: | |
3152 | Used when a 14 bit branch (or even a 24 bit branch) can't reach its | |
3153 | destination, but a 24 bit branch in a stub section will reach. | |
3154 | . b dest | |
3155 | ||
3156 | ppc_stub_plt_branch: | |
3157 | Similar to the above, but a 24 bit branch in the stub section won't | |
3158 | reach its destination. | |
87e226ce AM |
3159 | . addis %r12,%r2,xxx@toc@ha |
3160 | . ld %r11,xxx@toc@l(%r12) | |
721956f4 AM |
3161 | . mtctr %r11 |
3162 | . bctr | |
3163 | ||
3164 | ppc_stub_plt_call: | |
2c66dc6c AM |
3165 | Used to call a function in a shared library. If it so happens that |
3166 | the plt entry referenced crosses a 64k boundary, then an extra | |
3167 | "addis %r12,%r12,1" will be inserted before the load at xxx+8 or | |
3168 | xxx+16 as appropriate. | |
87e226ce | 3169 | . addis %r12,%r2,xxx@toc@ha |
721956f4 | 3170 | . std %r2,40(%r1) |
87e226ce AM |
3171 | . ld %r11,xxx+0@toc@l(%r12) |
3172 | . ld %r2,xxx+8@toc@l(%r12) | |
721956f4 | 3173 | . mtctr %r11 |
87e226ce | 3174 | . ld %r11,xxx+16@toc@l(%r12) |
721956f4 | 3175 | . bctr |
ad8e1ba5 AM |
3176 | |
3177 | ppc_stub_long_branch and ppc_stub_plt_branch may also have additional | |
3178 | code to adjust the value and save r2 to support multiple toc sections. | |
3179 | A ppc_stub_long_branch with an r2 offset looks like: | |
3180 | . std %r2,40(%r1) | |
3181 | . addis %r2,%r2,off@ha | |
3182 | . addi %r2,%r2,off@l | |
3183 | . b dest | |
3184 | ||
3185 | A ppc_stub_plt_branch with an r2 offset looks like: | |
3186 | . std %r2,40(%r1) | |
3187 | . addis %r12,%r2,xxx@toc@ha | |
3188 | . ld %r11,xxx@toc@l(%r12) | |
3189 | . addis %r2,%r2,off@ha | |
3190 | . addi %r2,%r2,off@l | |
3191 | . mtctr %r11 | |
3192 | . bctr | |
721956f4 AM |
3193 | */ |
3194 | ||
3195 | enum ppc_stub_type { | |
3196 | ppc_stub_none, | |
3197 | ppc_stub_long_branch, | |
ad8e1ba5 | 3198 | ppc_stub_long_branch_r2off, |
721956f4 | 3199 | ppc_stub_plt_branch, |
ad8e1ba5 | 3200 | ppc_stub_plt_branch_r2off, |
721956f4 AM |
3201 | ppc_stub_plt_call |
3202 | }; | |
3203 | ||
3204 | struct ppc_stub_hash_entry { | |
3205 | ||
3206 | /* Base hash table entry structure. */ | |
3207 | struct bfd_hash_entry root; | |
3208 | ||
ad8e1ba5 AM |
3209 | enum ppc_stub_type stub_type; |
3210 | ||
721956f4 AM |
3211 | /* The stub section. */ |
3212 | asection *stub_sec; | |
3213 | ||
3214 | /* Offset within stub_sec of the beginning of this stub. */ | |
3215 | bfd_vma stub_offset; | |
3216 | ||
3217 | /* Given the symbol's value and its section we can determine its final | |
3218 | value when building the stubs (so the stub knows where to jump. */ | |
3219 | bfd_vma target_value; | |
3220 | asection *target_section; | |
3221 | ||
721956f4 AM |
3222 | /* The symbol table entry, if any, that this was derived from. */ |
3223 | struct ppc_link_hash_entry *h; | |
3224 | ||
411e1bfb AM |
3225 | /* And the reloc addend that this was derived from. */ |
3226 | bfd_vma addend; | |
3227 | ||
721956f4 AM |
3228 | /* Where this stub is being called from, or, in the case of combined |
3229 | stub sections, the first input section in the group. */ | |
3230 | asection *id_sec; | |
3231 | }; | |
3232 | ||
3233 | struct ppc_branch_hash_entry { | |
3234 | ||
3235 | /* Base hash table entry structure. */ | |
3236 | struct bfd_hash_entry root; | |
3237 | ||
3238 | /* Offset within .branch_lt. */ | |
3239 | unsigned int offset; | |
3240 | ||
3241 | /* Generation marker. */ | |
3242 | unsigned int iter; | |
3243 | }; | |
65f38f15 AM |
3244 | |
3245 | struct ppc_link_hash_entry | |
3246 | { | |
3247 | struct elf_link_hash_entry elf; | |
3248 | ||
721956f4 AM |
3249 | /* A pointer to the most recently used stub hash entry against this |
3250 | symbol. */ | |
3251 | struct ppc_stub_hash_entry *stub_cache; | |
3252 | ||
65f38f15 AM |
3253 | /* Track dynamic relocs copied for this symbol. */ |
3254 | struct ppc_dyn_relocs *dyn_relocs; | |
e86ce104 | 3255 | |
721956f4 | 3256 | /* Link between function code and descriptor symbols. */ |
34814b9f | 3257 | struct ppc_link_hash_entry *oh; |
721956f4 | 3258 | |
e86ce104 AM |
3259 | /* Flag function code and descriptor symbols. */ |
3260 | unsigned int is_func:1; | |
3261 | unsigned int is_func_descriptor:1; | |
908b32fc | 3262 | unsigned int fake:1; |
411e1bfb | 3263 | |
c5614fa4 AM |
3264 | /* Whether global opd/toc sym has been adjusted or not. |
3265 | After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag | |
3266 | should be set for all globals defined in any opd/toc section. */ | |
754021d0 AM |
3267 | unsigned int adjust_done:1; |
3268 | ||
99877b66 AM |
3269 | /* Set if we twiddled this symbol to weak at some stage. */ |
3270 | unsigned int was_undefined:1; | |
3271 | ||
411e1bfb | 3272 | /* Contexts in which symbol is used in the GOT (or TOC). |
e7b938ca AM |
3273 | TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the |
3274 | corresponding relocs are encountered during check_relocs. | |
3275 | tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to | |
3276 | indicate the corresponding GOT entry type is not needed. | |
3277 | tls_optimize may also set TLS_TPRELGD when a GD reloc turns into | |
3278 | a TPREL one. We use a separate flag rather than setting TPREL | |
3279 | just for convenience in distinguishing the two cases. */ | |
3280 | #define TLS_GD 1 /* GD reloc. */ | |
3281 | #define TLS_LD 2 /* LD reloc. */ | |
3282 | #define TLS_TPREL 4 /* TPREL reloc, => IE. */ | |
3283 | #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */ | |
3284 | #define TLS_TLS 16 /* Any TLS reloc. */ | |
3285 | #define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */ | |
3286 | #define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */ | |
3287 | char tls_mask; | |
65f38f15 AM |
3288 | }; |
3289 | ||
3290 | /* ppc64 ELF linker hash table. */ | |
3291 | ||
3292 | struct ppc_link_hash_table | |
3293 | { | |
3294 | struct elf_link_hash_table elf; | |
3295 | ||
721956f4 AM |
3296 | /* The stub hash table. */ |
3297 | struct bfd_hash_table stub_hash_table; | |
3298 | ||
3299 | /* Another hash table for plt_branch stubs. */ | |
3300 | struct bfd_hash_table branch_hash_table; | |
3301 | ||
3302 | /* Linker stub bfd. */ | |
3303 | bfd *stub_bfd; | |
3304 | ||
3305 | /* Linker call-backs. */ | |
4ce794b7 AM |
3306 | asection * (*add_stub_section) (const char *, asection *); |
3307 | void (*layout_sections_again) (void); | |
721956f4 AM |
3308 | |
3309 | /* Array to keep track of which stub sections have been created, and | |
3310 | information on stub grouping. */ | |
3311 | struct map_stub { | |
3312 | /* This is the section to which stubs in the group will be attached. */ | |
3313 | asection *link_sec; | |
3314 | /* The stub section. */ | |
3315 | asection *stub_sec; | |
ad8e1ba5 AM |
3316 | /* Along with elf_gp, specifies the TOC pointer used in this group. */ |
3317 | bfd_vma toc_off; | |
721956f4 AM |
3318 | } *stub_group; |
3319 | ||
ad8e1ba5 AM |
3320 | /* Temp used when calculating TOC pointers. */ |
3321 | bfd_vma toc_curr; | |
3322 | ||
8f3bab57 AM |
3323 | /* Highest input section id. */ |
3324 | int top_id; | |
3325 | ||
734b6cf9 AM |
3326 | /* Highest output section index. */ |
3327 | int top_index; | |
3328 | ||
3329 | /* List of input sections for each output section. */ | |
3330 | asection **input_list; | |
721956f4 | 3331 | |
65f38f15 | 3332 | /* Short-cuts to get to dynamic linker sections. */ |
4ce794b7 | 3333 | asection *got; |
4ce794b7 AM |
3334 | asection *plt; |
3335 | asection *relplt; | |
3336 | asection *dynbss; | |
3337 | asection *relbss; | |
3338 | asection *glink; | |
82bd7b59 | 3339 | asection *sfpr; |
4ce794b7 AM |
3340 | asection *brlt; |
3341 | asection *relbrlt; | |
ec338859 | 3342 | |
8387904d AM |
3343 | /* Shortcut to .__tls_get_addr and __tls_get_addr. */ |
3344 | struct ppc_link_hash_entry *tls_get_addr; | |
3345 | struct ppc_link_hash_entry *tls_get_addr_fd; | |
411e1bfb | 3346 | |
9b5ecbd0 AM |
3347 | /* Statistics. */ |
3348 | unsigned long stub_count[ppc_stub_plt_call]; | |
3349 | ||
ee75fd95 AM |
3350 | /* Number of stubs against global syms. */ |
3351 | unsigned long stub_globals; | |
3352 | ||
ad8e1ba5 | 3353 | /* Set if we should emit symbols for stubs. */ |
99877b66 | 3354 | unsigned int emit_stub_syms:1; |
ad8e1ba5 | 3355 | |
4c52953f AM |
3356 | /* Support for multiple toc sections. */ |
3357 | unsigned int no_multi_toc:1; | |
3358 | unsigned int multi_toc_needed:1; | |
3359 | ||
5d1634d7 | 3360 | /* Set on error. */ |
99877b66 | 3361 | unsigned int stub_error:1; |
721956f4 AM |
3362 | |
3363 | /* Flag set when small branches are detected. Used to | |
3364 | select suitable defaults for the stub group size. */ | |
99877b66 AM |
3365 | unsigned int has_14bit_branch:1; |
3366 | ||
3367 | /* Temp used by ppc64_elf_check_directives. */ | |
3368 | unsigned int twiddled_syms:1; | |
721956f4 AM |
3369 | |
3370 | /* Incremented every time we size stubs. */ | |
3371 | unsigned int stub_iteration; | |
5d1634d7 | 3372 | |
ec338859 AM |
3373 | /* Small local sym to section mapping cache. */ |
3374 | struct sym_sec_cache sym_sec; | |
65f38f15 AM |
3375 | }; |
3376 | ||
4c52953f AM |
3377 | /* Rename some of the generic section flags to better document how they |
3378 | are used here. */ | |
3379 | #define has_toc_reloc has_gp_reloc | |
3380 | #define makes_toc_func_call need_finalize_relax | |
3381 | #define call_check_in_progress reloc_done | |
3382 | ||
65f38f15 AM |
3383 | /* Get the ppc64 ELF linker hash table from a link_info structure. */ |
3384 | ||
3385 | #define ppc_hash_table(p) \ | |
3386 | ((struct ppc_link_hash_table *) ((p)->hash)) | |
3387 | ||
721956f4 AM |
3388 | #define ppc_stub_hash_lookup(table, string, create, copy) \ |
3389 | ((struct ppc_stub_hash_entry *) \ | |
3390 | bfd_hash_lookup ((table), (string), (create), (copy))) | |
3391 | ||
3392 | #define ppc_branch_hash_lookup(table, string, create, copy) \ | |
3393 | ((struct ppc_branch_hash_entry *) \ | |
3394 | bfd_hash_lookup ((table), (string), (create), (copy))) | |
3395 | ||
3396 | /* Create an entry in the stub hash table. */ | |
3397 | ||
3398 | static struct bfd_hash_entry * | |
4ce794b7 AM |
3399 | stub_hash_newfunc (struct bfd_hash_entry *entry, |
3400 | struct bfd_hash_table *table, | |
3401 | const char *string) | |
721956f4 AM |
3402 | { |
3403 | /* Allocate the structure if it has not already been allocated by a | |
3404 | subclass. */ | |
3405 | if (entry == NULL) | |
3406 | { | |
3407 | entry = bfd_hash_allocate (table, sizeof (struct ppc_stub_hash_entry)); | |
3408 | if (entry == NULL) | |
3409 | return entry; | |
3410 | } | |
3411 | ||
3412 | /* Call the allocation method of the superclass. */ | |
3413 | entry = bfd_hash_newfunc (entry, table, string); | |
3414 | if (entry != NULL) | |
3415 | { | |
3416 | struct ppc_stub_hash_entry *eh; | |
3417 | ||
3418 | /* Initialize the local fields. */ | |
3419 | eh = (struct ppc_stub_hash_entry *) entry; | |
ad8e1ba5 | 3420 | eh->stub_type = ppc_stub_none; |
721956f4 AM |
3421 | eh->stub_sec = NULL; |
3422 | eh->stub_offset = 0; | |
3423 | eh->target_value = 0; | |
3424 | eh->target_section = NULL; | |
721956f4 AM |
3425 | eh->h = NULL; |
3426 | eh->id_sec = NULL; | |
3427 | } | |
3428 | ||
3429 | return entry; | |
3430 | } | |
3431 | ||
3432 | /* Create an entry in the branch hash table. */ | |
3433 | ||
3434 | static struct bfd_hash_entry * | |
4ce794b7 AM |
3435 | branch_hash_newfunc (struct bfd_hash_entry *entry, |
3436 | struct bfd_hash_table *table, | |
3437 | const char *string) | |
721956f4 AM |
3438 | { |
3439 | /* Allocate the structure if it has not already been allocated by a | |
3440 | subclass. */ | |
3441 | if (entry == NULL) | |
3442 | { | |
3443 | entry = bfd_hash_allocate (table, sizeof (struct ppc_branch_hash_entry)); | |
3444 | if (entry == NULL) | |
3445 | return entry; | |
3446 | } | |
3447 | ||
3448 | /* Call the allocation method of the superclass. */ | |
3449 | entry = bfd_hash_newfunc (entry, table, string); | |
3450 | if (entry != NULL) | |
3451 | { | |
3452 | struct ppc_branch_hash_entry *eh; | |
3453 | ||
3454 | /* Initialize the local fields. */ | |
3455 | eh = (struct ppc_branch_hash_entry *) entry; | |
3456 | eh->offset = 0; | |
3457 | eh->iter = 0; | |
3458 | } | |
3459 | ||
3460 | return entry; | |
3461 | } | |
3462 | ||
65f38f15 AM |
3463 | /* Create an entry in a ppc64 ELF linker hash table. */ |
3464 | ||
3465 | static struct bfd_hash_entry * | |
4ce794b7 AM |
3466 | link_hash_newfunc (struct bfd_hash_entry *entry, |
3467 | struct bfd_hash_table *table, | |
3468 | const char *string) | |
65f38f15 AM |
3469 | { |
3470 | /* Allocate the structure if it has not already been allocated by a | |
3471 | subclass. */ | |
3472 | if (entry == NULL) | |
3473 | { | |
3474 | entry = bfd_hash_allocate (table, sizeof (struct ppc_link_hash_entry)); | |
3475 | if (entry == NULL) | |
3476 | return entry; | |
3477 | } | |
3478 | ||
3479 | /* Call the allocation method of the superclass. */ | |
3480 | entry = _bfd_elf_link_hash_newfunc (entry, table, string); | |
3481 | if (entry != NULL) | |
3482 | { | |
3483 | struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) entry; | |
3484 | ||
908b32fc AM |
3485 | memset (&eh->stub_cache, 0, |
3486 | (sizeof (struct ppc_link_hash_entry) | |
3487 | - offsetof (struct ppc_link_hash_entry, stub_cache))); | |
65f38f15 AM |
3488 | } |
3489 | ||
3490 | return entry; | |
3491 | } | |
3492 | ||
3493 | /* Create a ppc64 ELF linker hash table. */ | |
3494 | ||
3495 | static struct bfd_link_hash_table * | |
4ce794b7 | 3496 | ppc64_elf_link_hash_table_create (bfd *abfd) |
65f38f15 AM |
3497 | { |
3498 | struct ppc_link_hash_table *htab; | |
3499 | bfd_size_type amt = sizeof (struct ppc_link_hash_table); | |
3500 | ||
4ce794b7 | 3501 | htab = bfd_zmalloc (amt); |
65f38f15 AM |
3502 | if (htab == NULL) |
3503 | return NULL; | |
3504 | ||
3505 | if (! _bfd_elf_link_hash_table_init (&htab->elf, abfd, link_hash_newfunc)) | |
3506 | { | |
e2d34d7d | 3507 | free (htab); |
65f38f15 AM |
3508 | return NULL; |
3509 | } | |
3510 | ||
721956f4 AM |
3511 | /* Init the stub hash table too. */ |
3512 | if (!bfd_hash_table_init (&htab->stub_hash_table, stub_hash_newfunc)) | |
3513 | return NULL; | |
3514 | ||
3515 | /* And the branch hash table. */ | |
3516 | if (!bfd_hash_table_init (&htab->branch_hash_table, branch_hash_newfunc)) | |
3517 | return NULL; | |
3518 | ||
3254fd24 AM |
3519 | /* Initializing two fields of the union is just cosmetic. We really |
3520 | only care about glist, but when compiled on a 32-bit host the | |
3521 | bfd_vma fields are larger. Setting the bfd_vma to zero makes | |
3522 | debugger inspection of these fields look nicer. */ | |
3523 | htab->elf.init_refcount.refcount = 0; | |
3524 | htab->elf.init_refcount.glist = NULL; | |
3525 | htab->elf.init_offset.offset = 0; | |
3526 | htab->elf.init_offset.glist = NULL; | |
3527 | ||
65f38f15 AM |
3528 | return &htab->elf.root; |
3529 | } | |
3530 | ||
721956f4 AM |
3531 | /* Free the derived linker hash table. */ |
3532 | ||
3533 | static void | |
4ce794b7 | 3534 | ppc64_elf_link_hash_table_free (struct bfd_link_hash_table *hash) |
721956f4 AM |
3535 | { |
3536 | struct ppc_link_hash_table *ret = (struct ppc_link_hash_table *) hash; | |
3537 | ||
3538 | bfd_hash_table_free (&ret->stub_hash_table); | |
3539 | bfd_hash_table_free (&ret->branch_hash_table); | |
3540 | _bfd_generic_link_hash_table_free (hash); | |
3541 | } | |
3542 | ||
e717da7e AM |
3543 | /* Satisfy the ELF linker by filling in some fields in our fake bfd. */ |
3544 | ||
3545 | void | |
3546 | ppc64_elf_init_stub_bfd (bfd *abfd, struct bfd_link_info *info) | |
3547 | { | |
3548 | struct ppc_link_hash_table *htab; | |
3549 | ||
3550 | elf_elfheader (abfd)->e_ident[EI_CLASS] = ELFCLASS64; | |
3551 | ||
3552 | /* Always hook our dynamic sections into the first bfd, which is the | |
3553 | linker created stub bfd. This ensures that the GOT header is at | |
3554 | the start of the output TOC section. */ | |
3555 | htab = ppc_hash_table (info); | |
3556 | htab->stub_bfd = abfd; | |
3557 | htab->elf.dynobj = abfd; | |
3558 | } | |
3559 | ||
721956f4 AM |
3560 | /* Build a name for an entry in the stub hash table. */ |
3561 | ||
3562 | static char * | |
4ce794b7 AM |
3563 | ppc_stub_name (const asection *input_section, |
3564 | const asection *sym_sec, | |
3565 | const struct ppc_link_hash_entry *h, | |
3566 | const Elf_Internal_Rela *rel) | |
721956f4 AM |
3567 | { |
3568 | char *stub_name; | |
3569 | bfd_size_type len; | |
3570 | ||
3571 | /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31 | |
3572 | offsets from a sym as a branch target? In fact, we could | |
3573 | probably assume the addend is always zero. */ | |
3574 | BFD_ASSERT (((int) rel->r_addend & 0xffffffff) == rel->r_addend); | |
3575 | ||
3576 | if (h) | |
3577 | { | |
3578 | len = 8 + 1 + strlen (h->elf.root.root.string) + 1 + 8 + 1; | |
3579 | stub_name = bfd_malloc (len); | |
3580 | if (stub_name != NULL) | |
3581 | { | |
97b639ba | 3582 | sprintf (stub_name, "%08x.%s+%x", |
721956f4 AM |
3583 | input_section->id & 0xffffffff, |
3584 | h->elf.root.root.string, | |
3585 | (int) rel->r_addend & 0xffffffff); | |
3586 | } | |
3587 | } | |
3588 | else | |
3589 | { | |
ad8e1ba5 | 3590 | len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1; |
721956f4 AM |
3591 | stub_name = bfd_malloc (len); |
3592 | if (stub_name != NULL) | |
3593 | { | |
97b639ba | 3594 | sprintf (stub_name, "%08x.%x:%x+%x", |
721956f4 AM |
3595 | input_section->id & 0xffffffff, |
3596 | sym_sec->id & 0xffffffff, | |
3597 | (int) ELF64_R_SYM (rel->r_info) & 0xffffffff, | |
3598 | (int) rel->r_addend & 0xffffffff); | |
3599 | } | |
3600 | } | |
ee75fd95 AM |
3601 | if (stub_name[len - 2] == '+' && stub_name[len - 1] == '0') |
3602 | stub_name[len - 2] = 0; | |
721956f4 AM |
3603 | return stub_name; |
3604 | } | |
3605 | ||
3606 | /* Look up an entry in the stub hash. Stub entries are cached because | |
3607 | creating the stub name takes a bit of time. */ | |
3608 | ||
3609 | static struct ppc_stub_hash_entry * | |
4ce794b7 AM |
3610 | ppc_get_stub_entry (const asection *input_section, |
3611 | const asection *sym_sec, | |
039b3fef | 3612 | struct ppc_link_hash_entry *h, |
4ce794b7 AM |
3613 | const Elf_Internal_Rela *rel, |
3614 | struct ppc_link_hash_table *htab) | |
721956f4 AM |
3615 | { |
3616 | struct ppc_stub_hash_entry *stub_entry; | |
721956f4 AM |
3617 | const asection *id_sec; |
3618 | ||
3619 | /* If this input section is part of a group of sections sharing one | |
3620 | stub section, then use the id of the first section in the group. | |
3621 | Stub names need to include a section id, as there may well be | |
3622 | more than one stub used to reach say, printf, and we need to | |
3623 | distinguish between them. */ | |
3624 | id_sec = htab->stub_group[input_section->id].link_sec; | |
3625 | ||
3626 | if (h != NULL && h->stub_cache != NULL | |
3627 | && h->stub_cache->h == h | |
3628 | && h->stub_cache->id_sec == id_sec) | |
3629 | { | |
3630 | stub_entry = h->stub_cache; | |
3631 | } | |
3632 | else | |
3633 | { | |
3634 | char *stub_name; | |
3635 | ||
3636 | stub_name = ppc_stub_name (id_sec, sym_sec, h, rel); | |
3637 | if (stub_name == NULL) | |
3638 | return NULL; | |
3639 | ||
3640 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, | |
b34976b6 | 3641 | stub_name, FALSE, FALSE); |
721956f4 AM |
3642 | if (h != NULL) |
3643 | h->stub_cache = stub_entry; | |
3644 | ||
3645 | free (stub_name); | |
3646 | } | |
3647 | ||
3648 | return stub_entry; | |
3649 | } | |
3650 | ||
3651 | /* Add a new stub entry to the stub hash. Not all fields of the new | |
3652 | stub entry are initialised. */ | |
3653 | ||
3654 | static struct ppc_stub_hash_entry * | |
4ce794b7 AM |
3655 | ppc_add_stub (const char *stub_name, |
3656 | asection *section, | |
3657 | struct ppc_link_hash_table *htab) | |
721956f4 AM |
3658 | { |
3659 | asection *link_sec; | |
3660 | asection *stub_sec; | |
3661 | struct ppc_stub_hash_entry *stub_entry; | |
3662 | ||
3663 | link_sec = htab->stub_group[section->id].link_sec; | |
3664 | stub_sec = htab->stub_group[section->id].stub_sec; | |
3665 | if (stub_sec == NULL) | |
3666 | { | |
3667 | stub_sec = htab->stub_group[link_sec->id].stub_sec; | |
3668 | if (stub_sec == NULL) | |
3669 | { | |
d4c88bbb | 3670 | size_t namelen; |
721956f4 AM |
3671 | bfd_size_type len; |
3672 | char *s_name; | |
3673 | ||
d4c88bbb AM |
3674 | namelen = strlen (link_sec->name); |
3675 | len = namelen + sizeof (STUB_SUFFIX); | |
721956f4 AM |
3676 | s_name = bfd_alloc (htab->stub_bfd, len); |
3677 | if (s_name == NULL) | |
3678 | return NULL; | |
3679 | ||
d4c88bbb AM |
3680 | memcpy (s_name, link_sec->name, namelen); |
3681 | memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX)); | |
721956f4 AM |
3682 | stub_sec = (*htab->add_stub_section) (s_name, link_sec); |
3683 | if (stub_sec == NULL) | |
3684 | return NULL; | |
3685 | htab->stub_group[link_sec->id].stub_sec = stub_sec; | |
3686 | } | |
3687 | htab->stub_group[section->id].stub_sec = stub_sec; | |
3688 | } | |
3689 | ||
3690 | /* Enter this entry into the linker stub hash table. */ | |
3691 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, stub_name, | |
b34976b6 | 3692 | TRUE, FALSE); |
721956f4 AM |
3693 | if (stub_entry == NULL) |
3694 | { | |
d003868e AM |
3695 | (*_bfd_error_handler) (_("%B: cannot create stub entry %s"), |
3696 | section->owner, stub_name); | |
721956f4 AM |
3697 | return NULL; |
3698 | } | |
3699 | ||
3700 | stub_entry->stub_sec = stub_sec; | |
3701 | stub_entry->stub_offset = 0; | |
3702 | stub_entry->id_sec = link_sec; | |
3703 | return stub_entry; | |
3704 | } | |
3705 | ||
82bd7b59 AM |
3706 | /* Create sections for linker generated code. */ |
3707 | ||
b34976b6 | 3708 | static bfd_boolean |
4ce794b7 | 3709 | create_linkage_sections (bfd *dynobj, struct bfd_link_info *info) |
82bd7b59 AM |
3710 | { |
3711 | struct ppc_link_hash_table *htab; | |
3712 | flagword flags; | |
3713 | ||
3714 | htab = ppc_hash_table (info); | |
3715 | ||
3716 | /* Create .sfpr for code to save and restore fp regs. */ | |
3717 | flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY | |
3718 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
3496cb2a L |
3719 | htab->sfpr = bfd_make_section_anyway_with_flags (dynobj, ".sfpr", |
3720 | flags); | |
82bd7b59 | 3721 | if (htab->sfpr == NULL |
82bd7b59 | 3722 | || ! bfd_set_section_alignment (dynobj, htab->sfpr, 2)) |
b34976b6 | 3723 | return FALSE; |
82bd7b59 | 3724 | |
721956f4 | 3725 | /* Create .glink for lazy dynamic linking support. */ |
3496cb2a L |
3726 | htab->glink = bfd_make_section_anyway_with_flags (dynobj, ".glink", |
3727 | flags); | |
4ce794b7 | 3728 | if (htab->glink == NULL |
4ce794b7 | 3729 | || ! bfd_set_section_alignment (dynobj, htab->glink, 2)) |
b34976b6 | 3730 | return FALSE; |
82bd7b59 | 3731 | |
721956f4 AM |
3732 | /* Create .branch_lt for plt_branch stubs. */ |
3733 | flags = (SEC_ALLOC | SEC_LOAD | |
3734 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
3496cb2a L |
3735 | htab->brlt = bfd_make_section_anyway_with_flags (dynobj, ".branch_lt", |
3736 | flags); | |
4ce794b7 | 3737 | if (htab->brlt == NULL |
4ce794b7 | 3738 | || ! bfd_set_section_alignment (dynobj, htab->brlt, 3)) |
b34976b6 | 3739 | return FALSE; |
721956f4 | 3740 | |
ee75fd95 | 3741 | if (info->shared || info->emitrelocations) |
721956f4 AM |
3742 | { |
3743 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | |
3744 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
3496cb2a L |
3745 | htab->relbrlt = bfd_make_section_anyway_with_flags (dynobj, |
3746 | ".rela.branch_lt", | |
3747 | flags); | |
4ce794b7 | 3748 | if (!htab->relbrlt |
4ce794b7 | 3749 | || ! bfd_set_section_alignment (dynobj, htab->relbrlt, 3)) |
b34976b6 | 3750 | return FALSE; |
721956f4 | 3751 | } |
b34976b6 | 3752 | return TRUE; |
82bd7b59 AM |
3753 | } |
3754 | ||
e717da7e AM |
3755 | /* Create .got and .rela.got sections in ABFD, and .got in dynobj if |
3756 | not already done. */ | |
65f38f15 | 3757 | |
b34976b6 | 3758 | static bfd_boolean |
e717da7e | 3759 | create_got_section (bfd *abfd, struct bfd_link_info *info) |
65f38f15 | 3760 | { |
e717da7e AM |
3761 | asection *got, *relgot; |
3762 | flagword flags; | |
3763 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
65f38f15 | 3764 | |
4ce794b7 | 3765 | if (!htab->got) |
e717da7e AM |
3766 | { |
3767 | if (! _bfd_elf_create_got_section (htab->elf.dynobj, info)) | |
3768 | return FALSE; | |
3769 | ||
3770 | htab->got = bfd_get_section_by_name (htab->elf.dynobj, ".got"); | |
3771 | if (!htab->got) | |
3772 | abort (); | |
3773 | } | |
3774 | ||
3775 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY | |
3776 | | SEC_LINKER_CREATED); | |
3777 | ||
3496cb2a | 3778 | got = bfd_make_section_with_flags (abfd, ".got", flags); |
e717da7e | 3779 | if (!got |
e717da7e AM |
3780 | || !bfd_set_section_alignment (abfd, got, 3)) |
3781 | return FALSE; | |
65f38f15 | 3782 | |
3496cb2a L |
3783 | relgot = bfd_make_section_with_flags (abfd, ".rela.got", |
3784 | flags | SEC_READONLY); | |
e717da7e | 3785 | if (!relgot |
e717da7e | 3786 | || ! bfd_set_section_alignment (abfd, relgot, 3)) |
b34976b6 | 3787 | return FALSE; |
e717da7e AM |
3788 | |
3789 | ppc64_elf_tdata (abfd)->got = got; | |
3790 | ppc64_elf_tdata (abfd)->relgot = relgot; | |
b34976b6 | 3791 | return TRUE; |
65f38f15 | 3792 | } |
5bd4f169 | 3793 | |
82bd7b59 | 3794 | /* Create the dynamic sections, and set up shortcuts. */ |
5bd4f169 | 3795 | |
b34976b6 | 3796 | static bfd_boolean |
4ce794b7 | 3797 | ppc64_elf_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info) |
5bd4f169 | 3798 | { |
65f38f15 | 3799 | struct ppc_link_hash_table *htab; |
5bd4f169 | 3800 | |
65f38f15 | 3801 | if (!_bfd_elf_create_dynamic_sections (dynobj, info)) |
b34976b6 | 3802 | return FALSE; |
65f38f15 | 3803 | |
e717da7e AM |
3804 | htab = ppc_hash_table (info); |
3805 | if (!htab->got) | |
3806 | htab->got = bfd_get_section_by_name (dynobj, ".got"); | |
4ce794b7 AM |
3807 | htab->plt = bfd_get_section_by_name (dynobj, ".plt"); |
3808 | htab->relplt = bfd_get_section_by_name (dynobj, ".rela.plt"); | |
3809 | htab->dynbss = bfd_get_section_by_name (dynobj, ".dynbss"); | |
65f38f15 | 3810 | if (!info->shared) |
4ce794b7 | 3811 | htab->relbss = bfd_get_section_by_name (dynobj, ".rela.bss"); |
65f38f15 | 3812 | |
e717da7e | 3813 | if (!htab->got || !htab->plt || !htab->relplt || !htab->dynbss |
4ce794b7 | 3814 | || (!info->shared && !htab->relbss)) |
65f38f15 AM |
3815 | abort (); |
3816 | ||
b34976b6 | 3817 | return TRUE; |
5bd4f169 AM |
3818 | } |
3819 | ||
40d16e0b AM |
3820 | /* Merge PLT info on FROM with that on TO. */ |
3821 | ||
3822 | static void | |
3823 | move_plt_plist (struct ppc_link_hash_entry *from, | |
3824 | struct ppc_link_hash_entry *to) | |
3825 | { | |
3826 | if (from->elf.plt.plist != NULL) | |
3827 | { | |
3828 | if (to->elf.plt.plist != NULL) | |
3829 | { | |
3830 | struct plt_entry **entp; | |
3831 | struct plt_entry *ent; | |
3832 | ||
3833 | for (entp = &from->elf.plt.plist; (ent = *entp) != NULL; ) | |
3834 | { | |
3835 | struct plt_entry *dent; | |
3836 | ||
3837 | for (dent = to->elf.plt.plist; dent != NULL; dent = dent->next) | |
3838 | if (dent->addend == ent->addend) | |
3839 | { | |
3840 | dent->plt.refcount += ent->plt.refcount; | |
3841 | *entp = ent->next; | |
3842 | break; | |
3843 | } | |
3844 | if (dent == NULL) | |
3845 | entp = &ent->next; | |
3846 | } | |
3847 | *entp = to->elf.plt.plist; | |
3848 | } | |
3849 | ||
3850 | to->elf.plt.plist = from->elf.plt.plist; | |
3851 | from->elf.plt.plist = NULL; | |
3852 | } | |
3853 | } | |
3854 | ||
65f38f15 AM |
3855 | /* Copy the extra info we tack onto an elf_link_hash_entry. */ |
3856 | ||
3857 | static void | |
9c5bfbb7 AM |
3858 | ppc64_elf_copy_indirect_symbol |
3859 | (const struct elf_backend_data *bed ATTRIBUTE_UNUSED, | |
3860 | struct elf_link_hash_entry *dir, | |
3861 | struct elf_link_hash_entry *ind) | |
65f38f15 AM |
3862 | { |
3863 | struct ppc_link_hash_entry *edir, *eind; | |
3864 | ||
3865 | edir = (struct ppc_link_hash_entry *) dir; | |
3866 | eind = (struct ppc_link_hash_entry *) ind; | |
3867 | ||
411e1bfb | 3868 | /* Copy over any dynamic relocs we may have on the indirect sym. */ |
bbd7ec4a | 3869 | if (eind->dyn_relocs != NULL) |
65f38f15 | 3870 | { |
bbd7ec4a AM |
3871 | if (edir->dyn_relocs != NULL) |
3872 | { | |
3873 | struct ppc_dyn_relocs **pp; | |
3874 | struct ppc_dyn_relocs *p; | |
3875 | ||
411e1bfb | 3876 | if (eind->elf.root.type == bfd_link_hash_indirect) |
bbd7ec4a AM |
3877 | abort (); |
3878 | ||
3879 | /* Add reloc counts against the weak sym to the strong sym | |
3880 | list. Merge any entries against the same section. */ | |
3881 | for (pp = &eind->dyn_relocs; (p = *pp) != NULL; ) | |
3882 | { | |
3883 | struct ppc_dyn_relocs *q; | |
3884 | ||
3885 | for (q = edir->dyn_relocs; q != NULL; q = q->next) | |
3886 | if (q->sec == p->sec) | |
3887 | { | |
3888 | q->pc_count += p->pc_count; | |
3889 | q->count += p->count; | |
3890 | *pp = p->next; | |
3891 | break; | |
3892 | } | |
3893 | if (q == NULL) | |
3894 | pp = &p->next; | |
3895 | } | |
3896 | *pp = edir->dyn_relocs; | |
3897 | } | |
3898 | ||
65f38f15 AM |
3899 | edir->dyn_relocs = eind->dyn_relocs; |
3900 | eind->dyn_relocs = NULL; | |
3901 | } | |
65f38f15 | 3902 | |
6349e628 AM |
3903 | edir->is_func |= eind->is_func; |
3904 | edir->is_func_descriptor |= eind->is_func_descriptor; | |
58ac9f71 | 3905 | edir->tls_mask |= eind->tls_mask; |
6349e628 | 3906 | |
81848ca0 | 3907 | /* If called to transfer flags for a weakdef during processing |
f5385ebf | 3908 | of elf_adjust_dynamic_symbol, don't copy NON_GOT_REF. |
81848ca0 | 3909 | We clear it ourselves for ELIMINATE_COPY_RELOCS. */ |
f5385ebf AM |
3910 | if (!(ELIMINATE_COPY_RELOCS |
3911 | && eind->elf.root.type != bfd_link_hash_indirect | |
3912 | && edir->elf.dynamic_adjusted)) | |
3913 | edir->elf.non_got_ref |= eind->elf.non_got_ref; | |
81848ca0 | 3914 | |
f5385ebf AM |
3915 | edir->elf.ref_dynamic |= eind->elf.ref_dynamic; |
3916 | edir->elf.ref_regular |= eind->elf.ref_regular; | |
3917 | edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak; | |
3918 | edir->elf.needs_plt |= eind->elf.needs_plt; | |
6349e628 AM |
3919 | |
3920 | /* If we were called to copy over info for a weak sym, that's all. */ | |
3921 | if (eind->elf.root.type != bfd_link_hash_indirect) | |
3922 | return; | |
3923 | ||
81848ca0 AM |
3924 | /* Copy over got entries that we may have already seen to the |
3925 | symbol which just became indirect. */ | |
411e1bfb AM |
3926 | if (eind->elf.got.glist != NULL) |
3927 | { | |
3928 | if (edir->elf.got.glist != NULL) | |
3929 | { | |
3930 | struct got_entry **entp; | |
3931 | struct got_entry *ent; | |
3932 | ||
3933 | for (entp = &eind->elf.got.glist; (ent = *entp) != NULL; ) | |
3934 | { | |
3935 | struct got_entry *dent; | |
3936 | ||
3937 | for (dent = edir->elf.got.glist; dent != NULL; dent = dent->next) | |
3938 | if (dent->addend == ent->addend | |
e717da7e | 3939 | && dent->owner == ent->owner |
411e1bfb AM |
3940 | && dent->tls_type == ent->tls_type) |
3941 | { | |
3942 | dent->got.refcount += ent->got.refcount; | |
3943 | *entp = ent->next; | |
3944 | break; | |
3945 | } | |
3946 | if (dent == NULL) | |
3947 | entp = &ent->next; | |
3948 | } | |
3949 | *entp = edir->elf.got.glist; | |
3950 | } | |
3951 | ||
3952 | edir->elf.got.glist = eind->elf.got.glist; | |
3953 | eind->elf.got.glist = NULL; | |
3954 | } | |
3955 | ||
3956 | /* And plt entries. */ | |
40d16e0b | 3957 | move_plt_plist (eind, edir); |
411e1bfb | 3958 | |
411e1bfb AM |
3959 | if (edir->elf.dynindx == -1) |
3960 | { | |
3961 | edir->elf.dynindx = eind->elf.dynindx; | |
3962 | edir->elf.dynstr_index = eind->elf.dynstr_index; | |
3963 | eind->elf.dynindx = -1; | |
3964 | eind->elf.dynstr_index = 0; | |
3965 | } | |
3966 | else | |
3967 | BFD_ASSERT (eind->elf.dynindx == -1); | |
3968 | } | |
3969 | ||
8387904d AM |
3970 | /* Find the function descriptor hash entry from the given function code |
3971 | hash entry FH. Link the entries via their OH fields. */ | |
3972 | ||
3973 | static struct ppc_link_hash_entry * | |
3974 | get_fdh (struct ppc_link_hash_entry *fh, struct ppc_link_hash_table *htab) | |
3975 | { | |
3976 | struct ppc_link_hash_entry *fdh = fh->oh; | |
3977 | ||
3978 | if (fdh == NULL) | |
3979 | { | |
3980 | const char *fd_name = fh->elf.root.root.string + 1; | |
3981 | ||
3982 | fdh = (struct ppc_link_hash_entry *) | |
3983 | elf_link_hash_lookup (&htab->elf, fd_name, FALSE, FALSE, FALSE); | |
3984 | if (fdh != NULL) | |
3985 | { | |
3986 | fdh->is_func_descriptor = 1; | |
3987 | fdh->oh = fh; | |
3988 | fh->is_func = 1; | |
3989 | fh->oh = fdh; | |
3990 | } | |
3991 | } | |
3992 | ||
3993 | return fdh; | |
3994 | } | |
3995 | ||
bb700d78 AM |
3996 | /* Make a fake function descriptor sym for the code sym FH. */ |
3997 | ||
3998 | static struct ppc_link_hash_entry * | |
3999 | make_fdh (struct bfd_link_info *info, | |
908b32fc | 4000 | struct ppc_link_hash_entry *fh) |
bb700d78 AM |
4001 | { |
4002 | bfd *abfd; | |
4003 | asymbol *newsym; | |
4004 | struct bfd_link_hash_entry *bh; | |
4005 | struct ppc_link_hash_entry *fdh; | |
4006 | ||
4007 | abfd = fh->elf.root.u.undef.abfd; | |
4008 | newsym = bfd_make_empty_symbol (abfd); | |
4009 | newsym->name = fh->elf.root.root.string + 1; | |
4010 | newsym->section = bfd_und_section_ptr; | |
4011 | newsym->value = 0; | |
908b32fc | 4012 | newsym->flags = BSF_WEAK; |
bb700d78 AM |
4013 | |
4014 | bh = NULL; | |
4015 | if (!_bfd_generic_link_add_one_symbol (info, abfd, newsym->name, | |
4016 | newsym->flags, newsym->section, | |
4017 | newsym->value, NULL, FALSE, FALSE, | |
4018 | &bh)) | |
4019 | return NULL; | |
4020 | ||
4021 | fdh = (struct ppc_link_hash_entry *) bh; | |
4022 | fdh->elf.non_elf = 0; | |
908b32fc AM |
4023 | fdh->fake = 1; |
4024 | fdh->is_func_descriptor = 1; | |
4025 | fdh->oh = fh; | |
4026 | fh->is_func = 1; | |
4027 | fh->oh = fdh; | |
bb700d78 AM |
4028 | return fdh; |
4029 | } | |
4030 | ||
8387904d AM |
4031 | /* Hacks to support old ABI code. |
4032 | When making function calls, old ABI code references function entry | |
4033 | points (dot symbols), while new ABI code references the function | |
4034 | descriptor symbol. We need to make any combination of reference and | |
4035 | definition work together, without breaking archive linking. | |
4036 | ||
4037 | For a defined function "foo" and an undefined call to "bar": | |
4038 | An old object defines "foo" and ".foo", references ".bar" (possibly | |
4039 | "bar" too). | |
4040 | A new object defines "foo" and references "bar". | |
4041 | ||
4042 | A new object thus has no problem with its undefined symbols being | |
4043 | satisfied by definitions in an old object. On the other hand, the | |
4044 | old object won't have ".bar" satisfied by a new object. */ | |
4045 | ||
4046 | /* Fix function descriptor symbols defined in .opd sections to be | |
4047 | function type. */ | |
555cd476 AM |
4048 | |
4049 | static bfd_boolean | |
433817dd | 4050 | ppc64_elf_add_symbol_hook (bfd *ibfd, |
555cd476 AM |
4051 | struct bfd_link_info *info ATTRIBUTE_UNUSED, |
4052 | Elf_Internal_Sym *isym, | |
433817dd | 4053 | const char **name, |
555cd476 AM |
4054 | flagword *flags ATTRIBUTE_UNUSED, |
4055 | asection **sec, | |
4056 | bfd_vma *value ATTRIBUTE_UNUSED) | |
4057 | { | |
8843416a AM |
4058 | if (*sec != NULL |
4059 | && strcmp (bfd_get_section_name (ibfd, *sec), ".opd") == 0) | |
555cd476 | 4060 | isym->st_info = ELF_ST_INFO (ELF_ST_BIND (isym->st_info), STT_FUNC); |
433817dd AM |
4061 | |
4062 | if ((*name)[0] == '.' | |
4063 | && ELF_ST_BIND (isym->st_info) == STB_GLOBAL | |
4064 | && ELF_ST_TYPE (isym->st_info) < STT_SECTION | |
4065 | && is_ppc64_elf_target (ibfd->xvec)) | |
4066 | ppc64_elf_tdata (ibfd)->u.has_dotsym = 1; | |
4067 | ||
555cd476 AM |
4068 | return TRUE; |
4069 | } | |
4070 | ||
8387904d | 4071 | /* This function makes an old ABI object reference to ".bar" cause the |
908b32fc AM |
4072 | inclusion of a new ABI object archive that defines "bar". |
4073 | NAME is a symbol defined in an archive. Return a symbol in the hash | |
4074 | table that might be satisfied by the archive symbols. */ | |
8387904d AM |
4075 | |
4076 | static struct elf_link_hash_entry * | |
4077 | ppc64_elf_archive_symbol_lookup (bfd *abfd, | |
4078 | struct bfd_link_info *info, | |
4079 | const char *name) | |
4080 | { | |
4081 | struct elf_link_hash_entry *h; | |
4082 | char *dot_name; | |
4083 | size_t len; | |
4084 | ||
4085 | h = _bfd_elf_archive_symbol_lookup (abfd, info, name); | |
908b32fc AM |
4086 | if (h != NULL |
4087 | /* Don't return this sym if it is a fake function descriptor | |
4088 | created by add_symbol_adjust. */ | |
4089 | && !(h->root.type == bfd_link_hash_undefweak | |
4090 | && ((struct ppc_link_hash_entry *) h)->fake)) | |
8387904d AM |
4091 | return h; |
4092 | ||
4093 | if (name[0] == '.') | |
4094 | return h; | |
4095 | ||
4096 | len = strlen (name); | |
4097 | dot_name = bfd_alloc (abfd, len + 2); | |
4098 | if (dot_name == NULL) | |
4099 | return (struct elf_link_hash_entry *) 0 - 1; | |
4100 | dot_name[0] = '.'; | |
4101 | memcpy (dot_name + 1, name, len + 1); | |
4102 | h = _bfd_elf_archive_symbol_lookup (abfd, info, dot_name); | |
4103 | bfd_release (abfd, dot_name); | |
4104 | return h; | |
4105 | } | |
4106 | ||
4107 | /* This function satisfies all old ABI object references to ".bar" if a | |
99877b66 AM |
4108 | new ABI object defines "bar". Well, at least, undefined dot symbols |
4109 | are made weak. This stops later archive searches from including an | |
4110 | object if we already have a function descriptor definition. It also | |
35b0ce59 AM |
4111 | prevents the linker complaining about undefined symbols. |
4112 | We also check and correct mismatched symbol visibility here. The | |
4113 | most restrictive visibility of the function descriptor and the | |
4114 | function entry symbol is used. */ | |
8387904d | 4115 | |
bb700d78 AM |
4116 | struct add_symbol_adjust_data |
4117 | { | |
4118 | struct bfd_link_info *info; | |
4119 | bfd_boolean ok; | |
4120 | }; | |
4121 | ||
8387904d AM |
4122 | static bfd_boolean |
4123 | add_symbol_adjust (struct elf_link_hash_entry *h, void *inf) | |
4124 | { | |
bb700d78 | 4125 | struct add_symbol_adjust_data *data; |
8387904d | 4126 | struct ppc_link_hash_table *htab; |
99877b66 | 4127 | struct ppc_link_hash_entry *eh; |
8387904d AM |
4128 | struct ppc_link_hash_entry *fdh; |
4129 | ||
4130 | if (h->root.type == bfd_link_hash_indirect) | |
4131 | return TRUE; | |
4132 | ||
4133 | if (h->root.type == bfd_link_hash_warning) | |
4134 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
4135 | ||
35b0ce59 | 4136 | if (h->root.root.string[0] != '.') |
8387904d AM |
4137 | return TRUE; |
4138 | ||
bb700d78 AM |
4139 | data = inf; |
4140 | htab = ppc_hash_table (data->info); | |
99877b66 AM |
4141 | eh = (struct ppc_link_hash_entry *) h; |
4142 | fdh = get_fdh (eh, htab); | |
bb700d78 | 4143 | if (fdh == NULL |
c4f68ce3 | 4144 | && !data->info->relocatable |
bb700d78 AM |
4145 | && (eh->elf.root.type == bfd_link_hash_undefined |
4146 | || eh->elf.root.type == bfd_link_hash_undefweak) | |
4147 | && eh->elf.ref_regular) | |
4148 | { | |
4149 | /* Make an undefweak function descriptor sym, which is enough to | |
4150 | pull in an --as-needed shared lib, but won't cause link | |
4151 | errors. Archives are handled elsewhere. */ | |
908b32fc | 4152 | fdh = make_fdh (data->info, eh); |
bb700d78 AM |
4153 | if (fdh == NULL) |
4154 | data->ok = FALSE; | |
4155 | else | |
4156 | fdh->elf.ref_regular = 1; | |
4157 | } | |
c4f68ce3 AM |
4158 | else if (fdh != NULL |
4159 | && (fdh->elf.root.type == bfd_link_hash_defined | |
4160 | || fdh->elf.root.type == bfd_link_hash_defweak)) | |
8387904d | 4161 | { |
35b0ce59 AM |
4162 | unsigned entry_vis = ELF_ST_VISIBILITY (eh->elf.other) - 1; |
4163 | unsigned descr_vis = ELF_ST_VISIBILITY (fdh->elf.other) - 1; | |
4164 | if (entry_vis < descr_vis) | |
4165 | fdh->elf.other += entry_vis - descr_vis; | |
4166 | else if (entry_vis > descr_vis) | |
4167 | eh->elf.other += descr_vis - entry_vis; | |
4168 | ||
c4f68ce3 | 4169 | if (eh->elf.root.type == bfd_link_hash_undefined) |
35b0ce59 AM |
4170 | { |
4171 | eh->elf.root.type = bfd_link_hash_undefweak; | |
4172 | eh->was_undefined = 1; | |
4173 | htab->twiddled_syms = 1; | |
4174 | } | |
8387904d | 4175 | } |
99877b66 | 4176 | |
8387904d AM |
4177 | return TRUE; |
4178 | } | |
4179 | ||
4180 | static bfd_boolean | |
433817dd | 4181 | ppc64_elf_check_directives (bfd *abfd, struct bfd_link_info *info) |
8387904d | 4182 | { |
99877b66 | 4183 | struct ppc_link_hash_table *htab; |
bb700d78 | 4184 | struct add_symbol_adjust_data data; |
99877b66 | 4185 | |
433817dd AM |
4186 | if (!is_ppc64_elf_target (abfd->xvec)) |
4187 | return TRUE; | |
4188 | ||
4189 | if (!ppc64_elf_tdata (abfd)->u.has_dotsym) | |
4190 | return TRUE; | |
4191 | ppc64_elf_tdata (abfd)->u.deleted_section = NULL; | |
4192 | ||
99877b66 | 4193 | htab = ppc_hash_table (info); |
ee75fd95 | 4194 | if (!is_ppc64_elf_target (htab->elf.root.creator)) |
35b0ce59 AM |
4195 | return TRUE; |
4196 | ||
bb700d78 AM |
4197 | data.info = info; |
4198 | data.ok = TRUE; | |
4199 | elf_link_hash_traverse (&htab->elf, add_symbol_adjust, &data); | |
99877b66 AM |
4200 | |
4201 | /* We need to fix the undefs list for any syms we have twiddled to | |
4202 | undef_weak. */ | |
4203 | if (htab->twiddled_syms) | |
4204 | { | |
77cfaee6 | 4205 | bfd_link_repair_undef_list (&htab->elf.root); |
99877b66 AM |
4206 | htab->twiddled_syms = 0; |
4207 | } | |
bb700d78 | 4208 | return data.ok; |
8387904d AM |
4209 | } |
4210 | ||
411e1bfb | 4211 | static bfd_boolean |
4ce794b7 AM |
4212 | update_local_sym_info (bfd *abfd, Elf_Internal_Shdr *symtab_hdr, |
4213 | unsigned long r_symndx, bfd_vma r_addend, int tls_type) | |
411e1bfb AM |
4214 | { |
4215 | struct got_entry **local_got_ents = elf_local_got_ents (abfd); | |
e7b938ca | 4216 | char *local_got_tls_masks; |
411e1bfb AM |
4217 | |
4218 | if (local_got_ents == NULL) | |
4219 | { | |
4220 | bfd_size_type size = symtab_hdr->sh_info; | |
4221 | ||
e7b938ca | 4222 | size *= sizeof (*local_got_ents) + sizeof (*local_got_tls_masks); |
4ce794b7 | 4223 | local_got_ents = bfd_zalloc (abfd, size); |
411e1bfb AM |
4224 | if (local_got_ents == NULL) |
4225 | return FALSE; | |
4226 | elf_local_got_ents (abfd) = local_got_ents; | |
4227 | } | |
4228 | ||
4229 | if ((tls_type & TLS_EXPLICIT) == 0) | |
4230 | { | |
4231 | struct got_entry *ent; | |
4232 | ||
4233 | for (ent = local_got_ents[r_symndx]; ent != NULL; ent = ent->next) | |
e717da7e AM |
4234 | if (ent->addend == r_addend |
4235 | && ent->owner == abfd | |
4236 | && ent->tls_type == tls_type) | |
411e1bfb AM |
4237 | break; |
4238 | if (ent == NULL) | |
4239 | { | |
4240 | bfd_size_type amt = sizeof (*ent); | |
4ce794b7 | 4241 | ent = bfd_alloc (abfd, amt); |
411e1bfb AM |
4242 | if (ent == NULL) |
4243 | return FALSE; | |
4244 | ent->next = local_got_ents[r_symndx]; | |
4245 | ent->addend = r_addend; | |
e717da7e | 4246 | ent->owner = abfd; |
411e1bfb AM |
4247 | ent->tls_type = tls_type; |
4248 | ent->got.refcount = 0; | |
4249 | local_got_ents[r_symndx] = ent; | |
4250 | } | |
4251 | ent->got.refcount += 1; | |
4252 | } | |
4253 | ||
e7b938ca AM |
4254 | local_got_tls_masks = (char *) (local_got_ents + symtab_hdr->sh_info); |
4255 | local_got_tls_masks[r_symndx] |= tls_type; | |
411e1bfb | 4256 | return TRUE; |
65f38f15 AM |
4257 | } |
4258 | ||
411e1bfb | 4259 | static bfd_boolean |
4ce794b7 | 4260 | update_plt_info (bfd *abfd, struct ppc_link_hash_entry *eh, bfd_vma addend) |
1e2f5b6e | 4261 | { |
411e1bfb | 4262 | struct plt_entry *ent; |
1e2f5b6e | 4263 | |
411e1bfb AM |
4264 | for (ent = eh->elf.plt.plist; ent != NULL; ent = ent->next) |
4265 | if (ent->addend == addend) | |
4266 | break; | |
4267 | if (ent == NULL) | |
1e2f5b6e | 4268 | { |
411e1bfb | 4269 | bfd_size_type amt = sizeof (*ent); |
4ce794b7 | 4270 | ent = bfd_alloc (abfd, amt); |
411e1bfb AM |
4271 | if (ent == NULL) |
4272 | return FALSE; | |
4273 | ent->next = eh->elf.plt.plist; | |
4274 | ent->addend = addend; | |
4275 | ent->plt.refcount = 0; | |
4276 | eh->elf.plt.plist = ent; | |
1e2f5b6e | 4277 | } |
411e1bfb | 4278 | ent->plt.refcount += 1; |
f5385ebf | 4279 | eh->elf.needs_plt = 1; |
93f3fa99 AM |
4280 | if (eh->elf.root.root.string[0] == '.' |
4281 | && eh->elf.root.root.string[1] != '\0') | |
4282 | eh->is_func = 1; | |
b34976b6 | 4283 | return TRUE; |
1e2f5b6e AM |
4284 | } |
4285 | ||
5bd4f169 | 4286 | /* Look through the relocs for a section during the first phase, and |
65f38f15 | 4287 | calculate needed space in the global offset table, procedure |
5d1634d7 | 4288 | linkage table, and dynamic reloc sections. */ |
5bd4f169 | 4289 | |
b34976b6 | 4290 | static bfd_boolean |
4ce794b7 AM |
4291 | ppc64_elf_check_relocs (bfd *abfd, struct bfd_link_info *info, |
4292 | asection *sec, const Elf_Internal_Rela *relocs) | |
5bd4f169 | 4293 | { |
65f38f15 | 4294 | struct ppc_link_hash_table *htab; |
5bd4f169 AM |
4295 | Elf_Internal_Shdr *symtab_hdr; |
4296 | struct elf_link_hash_entry **sym_hashes, **sym_hashes_end; | |
4297 | const Elf_Internal_Rela *rel; | |
4298 | const Elf_Internal_Rela *rel_end; | |
5bd4f169 | 4299 | asection *sreloc; |
1e2f5b6e | 4300 | asection **opd_sym_map; |
5bd4f169 | 4301 | |
1049f94e | 4302 | if (info->relocatable) |
b34976b6 | 4303 | return TRUE; |
5bd4f169 | 4304 | |
680a3378 AM |
4305 | /* Don't do anything special with non-loaded, non-alloced sections. |
4306 | In particular, any relocs in such sections should not affect GOT | |
4307 | and PLT reference counting (ie. we don't allow them to create GOT | |
4308 | or PLT entries), there's no possibility or desire to optimize TLS | |
4309 | relocs, and there's not much point in propagating relocs to shared | |
4310 | libs that the dynamic linker won't relocate. */ | |
4311 | if ((sec->flags & SEC_ALLOC) == 0) | |
4312 | return TRUE; | |
4313 | ||
65f38f15 | 4314 | htab = ppc_hash_table (info); |
5bd4f169 | 4315 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
5bd4f169 AM |
4316 | |
4317 | sym_hashes = elf_sym_hashes (abfd); | |
4318 | sym_hashes_end = (sym_hashes | |
1e2f5b6e AM |
4319 | + symtab_hdr->sh_size / sizeof (Elf64_External_Sym) |
4320 | - symtab_hdr->sh_info); | |
5bd4f169 AM |
4321 | |
4322 | sreloc = NULL; | |
1e2f5b6e AM |
4323 | opd_sym_map = NULL; |
4324 | if (strcmp (bfd_get_section_name (abfd, sec), ".opd") == 0) | |
4325 | { | |
4326 | /* Garbage collection needs some extra help with .opd sections. | |
4327 | We don't want to necessarily keep everything referenced by | |
4328 | relocs in .opd, as that would keep all functions. Instead, | |
4329 | if we reference an .opd symbol (a function descriptor), we | |
4330 | want to keep the function code symbol's section. This is | |
4331 | easy for global symbols, but for local syms we need to keep | |
4332 | information about the associated function section. Later, if | |
4333 | edit_opd deletes entries, we'll use this array to adjust | |
4334 | local syms in .opd. */ | |
4335 | union opd_info { | |
4336 | asection *func_section; | |
4337 | long entry_adjust; | |
4338 | }; | |
4339 | bfd_size_type amt; | |
4340 | ||
3f764659 | 4341 | amt = sec->size * sizeof (union opd_info) / 8; |
4ce794b7 | 4342 | opd_sym_map = bfd_zalloc (abfd, amt); |
1e2f5b6e | 4343 | if (opd_sym_map == NULL) |
b34976b6 | 4344 | return FALSE; |
f0abc2a1 | 4345 | ppc64_elf_section_data (sec)->opd.func_sec = opd_sym_map; |
1e2f5b6e | 4346 | } |
5bd4f169 | 4347 | |
82bd7b59 AM |
4348 | if (htab->sfpr == NULL |
4349 | && !create_linkage_sections (htab->elf.dynobj, info)) | |
b34976b6 | 4350 | return FALSE; |
82bd7b59 | 4351 | |
5bd4f169 AM |
4352 | rel_end = relocs + sec->reloc_count; |
4353 | for (rel = relocs; rel < rel_end; rel++) | |
4354 | { | |
4355 | unsigned long r_symndx; | |
4356 | struct elf_link_hash_entry *h; | |
04c9666a | 4357 | enum elf_ppc64_reloc_type r_type; |
411e1bfb | 4358 | int tls_type = 0; |
5bd4f169 AM |
4359 | |
4360 | r_symndx = ELF64_R_SYM (rel->r_info); | |
4361 | if (r_symndx < symtab_hdr->sh_info) | |
4362 | h = NULL; | |
4363 | else | |
4364 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
4365 | ||
4ce794b7 | 4366 | r_type = ELF64_R_TYPE (rel->r_info); |
a33d1f77 | 4367 | switch (r_type) |
5bd4f169 | 4368 | { |
411e1bfb AM |
4369 | case R_PPC64_GOT_TLSLD16: |
4370 | case R_PPC64_GOT_TLSLD16_LO: | |
4371 | case R_PPC64_GOT_TLSLD16_HI: | |
4372 | case R_PPC64_GOT_TLSLD16_HA: | |
e717da7e | 4373 | ppc64_tlsld_got (abfd)->refcount += 1; |
951fd09b | 4374 | tls_type = TLS_TLS | TLS_LD; |
411e1bfb AM |
4375 | goto dogottls; |
4376 | ||
4377 | case R_PPC64_GOT_TLSGD16: | |
4378 | case R_PPC64_GOT_TLSGD16_LO: | |
4379 | case R_PPC64_GOT_TLSGD16_HI: | |
4380 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b | 4381 | tls_type = TLS_TLS | TLS_GD; |
411e1bfb AM |
4382 | goto dogottls; |
4383 | ||
4384 | case R_PPC64_GOT_TPREL16_DS: | |
4385 | case R_PPC64_GOT_TPREL16_LO_DS: | |
4386 | case R_PPC64_GOT_TPREL16_HI: | |
4387 | case R_PPC64_GOT_TPREL16_HA: | |
4388 | if (info->shared) | |
4389 | info->flags |= DF_STATIC_TLS; | |
4390 | tls_type = TLS_TLS | TLS_TPREL; | |
4391 | goto dogottls; | |
4392 | ||
4393 | case R_PPC64_GOT_DTPREL16_DS: | |
4394 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
4395 | case R_PPC64_GOT_DTPREL16_HI: | |
4396 | case R_PPC64_GOT_DTPREL16_HA: | |
4397 | tls_type = TLS_TLS | TLS_DTPREL; | |
4398 | dogottls: | |
4399 | sec->has_tls_reloc = 1; | |
4400 | /* Fall thru */ | |
4401 | ||
5bd4f169 | 4402 | case R_PPC64_GOT16: |
5bd4f169 | 4403 | case R_PPC64_GOT16_DS: |
65f38f15 AM |
4404 | case R_PPC64_GOT16_HA: |
4405 | case R_PPC64_GOT16_HI: | |
4406 | case R_PPC64_GOT16_LO: | |
5bd4f169 | 4407 | case R_PPC64_GOT16_LO_DS: |
65f38f15 | 4408 | /* This symbol requires a global offset table entry. */ |
4c52953f | 4409 | sec->has_toc_reloc = 1; |
e717da7e AM |
4410 | if (ppc64_elf_tdata (abfd)->got == NULL |
4411 | && !create_got_section (abfd, info)) | |
b34976b6 | 4412 | return FALSE; |
5bd4f169 AM |
4413 | |
4414 | if (h != NULL) | |
4415 | { | |
411e1bfb AM |
4416 | struct ppc_link_hash_entry *eh; |
4417 | struct got_entry *ent; | |
65f38f15 | 4418 | |
411e1bfb AM |
4419 | eh = (struct ppc_link_hash_entry *) h; |
4420 | for (ent = eh->elf.got.glist; ent != NULL; ent = ent->next) | |
4421 | if (ent->addend == rel->r_addend | |
e717da7e | 4422 | && ent->owner == abfd |
411e1bfb AM |
4423 | && ent->tls_type == tls_type) |
4424 | break; | |
4425 | if (ent == NULL) | |
5bd4f169 | 4426 | { |
411e1bfb | 4427 | bfd_size_type amt = sizeof (*ent); |
4ce794b7 | 4428 | ent = bfd_alloc (abfd, amt); |
411e1bfb | 4429 | if (ent == NULL) |
b34976b6 | 4430 | return FALSE; |
411e1bfb AM |
4431 | ent->next = eh->elf.got.glist; |
4432 | ent->addend = rel->r_addend; | |
e717da7e | 4433 | ent->owner = abfd; |
411e1bfb AM |
4434 | ent->tls_type = tls_type; |
4435 | ent->got.refcount = 0; | |
4436 | eh->elf.got.glist = ent; | |
5bd4f169 | 4437 | } |
411e1bfb | 4438 | ent->got.refcount += 1; |
e7b938ca | 4439 | eh->tls_mask |= tls_type; |
5bd4f169 | 4440 | } |
411e1bfb AM |
4441 | else |
4442 | /* This is a global offset table entry for a local symbol. */ | |
4443 | if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
4444 | rel->r_addend, tls_type)) | |
4445 | return FALSE; | |
5bd4f169 AM |
4446 | break; |
4447 | ||
5bd4f169 | 4448 | case R_PPC64_PLT16_HA: |
65f38f15 AM |
4449 | case R_PPC64_PLT16_HI: |
4450 | case R_PPC64_PLT16_LO: | |
4451 | case R_PPC64_PLT32: | |
4452 | case R_PPC64_PLT64: | |
5bd4f169 | 4453 | /* This symbol requires a procedure linkage table entry. We |
3fad3c7c AM |
4454 | actually build the entry in adjust_dynamic_symbol, |
4455 | because this might be a case of linking PIC code without | |
4456 | linking in any dynamic objects, in which case we don't | |
4457 | need to generate a procedure linkage table after all. */ | |
5bd4f169 AM |
4458 | if (h == NULL) |
4459 | { | |
4460 | /* It does not make sense to have a procedure linkage | |
3fad3c7c | 4461 | table entry for a local symbol. */ |
5bd4f169 | 4462 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 4463 | return FALSE; |
5bd4f169 | 4464 | } |
411e1bfb AM |
4465 | else |
4466 | if (!update_plt_info (abfd, (struct ppc_link_hash_entry *) h, | |
4467 | rel->r_addend)) | |
4468 | return FALSE; | |
5bd4f169 AM |
4469 | break; |
4470 | ||
4471 | /* The following relocations don't need to propagate the | |
4472 | relocation if linking a shared object since they are | |
4473 | section relative. */ | |
4474 | case R_PPC64_SECTOFF: | |
4475 | case R_PPC64_SECTOFF_LO: | |
4476 | case R_PPC64_SECTOFF_HI: | |
4477 | case R_PPC64_SECTOFF_HA: | |
4478 | case R_PPC64_SECTOFF_DS: | |
4479 | case R_PPC64_SECTOFF_LO_DS: | |
411e1bfb AM |
4480 | case R_PPC64_DTPREL16: |
4481 | case R_PPC64_DTPREL16_LO: | |
4482 | case R_PPC64_DTPREL16_HI: | |
4483 | case R_PPC64_DTPREL16_HA: | |
4484 | case R_PPC64_DTPREL16_DS: | |
4485 | case R_PPC64_DTPREL16_LO_DS: | |
4486 | case R_PPC64_DTPREL16_HIGHER: | |
4487 | case R_PPC64_DTPREL16_HIGHERA: | |
4488 | case R_PPC64_DTPREL16_HIGHEST: | |
4489 | case R_PPC64_DTPREL16_HIGHESTA: | |
5bd4f169 AM |
4490 | break; |
4491 | ||
ad8e1ba5 AM |
4492 | /* Nor do these. */ |
4493 | case R_PPC64_TOC16: | |
4494 | case R_PPC64_TOC16_LO: | |
4495 | case R_PPC64_TOC16_HI: | |
4496 | case R_PPC64_TOC16_HA: | |
4497 | case R_PPC64_TOC16_DS: | |
4498 | case R_PPC64_TOC16_LO_DS: | |
4c52953f | 4499 | sec->has_toc_reloc = 1; |
ad8e1ba5 AM |
4500 | break; |
4501 | ||
5bd4f169 AM |
4502 | /* This relocation describes the C++ object vtable hierarchy. |
4503 | Reconstruct it for later use during GC. */ | |
4504 | case R_PPC64_GNU_VTINHERIT: | |
c152c796 | 4505 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
b34976b6 | 4506 | return FALSE; |
5bd4f169 AM |
4507 | break; |
4508 | ||
4509 | /* This relocation describes which C++ vtable entries are actually | |
4510 | used. Record for later use during GC. */ | |
4511 | case R_PPC64_GNU_VTENTRY: | |
c152c796 | 4512 | if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) |
b34976b6 | 4513 | return FALSE; |
5bd4f169 AM |
4514 | break; |
4515 | ||
721956f4 AM |
4516 | case R_PPC64_REL14: |
4517 | case R_PPC64_REL14_BRTAKEN: | |
4518 | case R_PPC64_REL14_BRNTAKEN: | |
4519 | htab->has_14bit_branch = 1; | |
4520 | /* Fall through. */ | |
4521 | ||
5d1634d7 | 4522 | case R_PPC64_REL24: |
8387904d | 4523 | if (h != NULL) |
5d1634d7 AM |
4524 | { |
4525 | /* We may need a .plt entry if the function this reloc | |
4526 | refers to is in a shared lib. */ | |
411e1bfb AM |
4527 | if (!update_plt_info (abfd, (struct ppc_link_hash_entry *) h, |
4528 | rel->r_addend)) | |
4529 | return FALSE; | |
8387904d AM |
4530 | if (h == &htab->tls_get_addr->elf |
4531 | || h == &htab->tls_get_addr_fd->elf) | |
411e1bfb | 4532 | sec->has_tls_reloc = 1; |
8387904d AM |
4533 | else if (htab->tls_get_addr == NULL |
4534 | && !strncmp (h->root.root.string, ".__tls_get_addr", 15) | |
a48ebf4d AM |
4535 | && (h->root.root.string[15] == 0 |
4536 | || h->root.root.string[15] == '@')) | |
411e1bfb | 4537 | { |
8387904d AM |
4538 | htab->tls_get_addr = (struct ppc_link_hash_entry *) h; |
4539 | sec->has_tls_reloc = 1; | |
4540 | } | |
4541 | else if (htab->tls_get_addr_fd == NULL | |
4542 | && !strncmp (h->root.root.string, "__tls_get_addr", 14) | |
4543 | && (h->root.root.string[14] == 0 | |
4544 | || h->root.root.string[14] == '@')) | |
4545 | { | |
4546 | htab->tls_get_addr_fd = (struct ppc_link_hash_entry *) h; | |
411e1bfb AM |
4547 | sec->has_tls_reloc = 1; |
4548 | } | |
4549 | } | |
4550 | break; | |
4551 | ||
4552 | case R_PPC64_TPREL64: | |
4553 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_TPREL; | |
4554 | if (info->shared) | |
4555 | info->flags |= DF_STATIC_TLS; | |
4556 | goto dotlstoc; | |
4557 | ||
4558 | case R_PPC64_DTPMOD64: | |
4559 | if (rel + 1 < rel_end | |
4560 | && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64) | |
4561 | && rel[1].r_offset == rel->r_offset + 8) | |
951fd09b | 4562 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_GD; |
411e1bfb | 4563 | else |
951fd09b | 4564 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_LD; |
411e1bfb AM |
4565 | goto dotlstoc; |
4566 | ||
4567 | case R_PPC64_DTPREL64: | |
4568 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_DTPREL; | |
4569 | if (rel != relocs | |
4570 | && rel[-1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPMOD64) | |
4571 | && rel[-1].r_offset == rel->r_offset - 8) | |
4572 | /* This is the second reloc of a dtpmod, dtprel pair. | |
4573 | Don't mark with TLS_DTPREL. */ | |
4574 | goto dodyn; | |
4575 | ||
4576 | dotlstoc: | |
4577 | sec->has_tls_reloc = 1; | |
4578 | if (h != NULL) | |
4579 | { | |
4580 | struct ppc_link_hash_entry *eh; | |
4581 | eh = (struct ppc_link_hash_entry *) h; | |
e7b938ca | 4582 | eh->tls_mask |= tls_type; |
411e1bfb AM |
4583 | } |
4584 | else | |
4585 | if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
4586 | rel->r_addend, tls_type)) | |
4587 | return FALSE; | |
4588 | ||
4589 | if (ppc64_elf_section_data (sec)->t_symndx == NULL) | |
4590 | { | |
e7b938ca | 4591 | /* One extra to simplify get_tls_mask. */ |
eea6121a | 4592 | bfd_size_type amt = sec->size * sizeof (unsigned) / 8 + 1; |
4ce794b7 | 4593 | ppc64_elf_section_data (sec)->t_symndx = bfd_zalloc (abfd, amt); |
411e1bfb AM |
4594 | if (ppc64_elf_section_data (sec)->t_symndx == NULL) |
4595 | return FALSE; | |
4596 | } | |
4597 | BFD_ASSERT (rel->r_offset % 8 == 0); | |
4598 | ppc64_elf_section_data (sec)->t_symndx[rel->r_offset / 8] = r_symndx; | |
951fd09b AM |
4599 | |
4600 | /* Mark the second slot of a GD or LD entry. | |
4601 | -1 to indicate GD and -2 to indicate LD. */ | |
4602 | if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_GD)) | |
4603 | ppc64_elf_section_data (sec)->t_symndx[rel->r_offset / 8 + 1] = -1; | |
4604 | else if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_LD)) | |
4605 | ppc64_elf_section_data (sec)->t_symndx[rel->r_offset / 8 + 1] = -2; | |
411e1bfb AM |
4606 | goto dodyn; |
4607 | ||
4608 | case R_PPC64_TPREL16: | |
4609 | case R_PPC64_TPREL16_LO: | |
4610 | case R_PPC64_TPREL16_HI: | |
4611 | case R_PPC64_TPREL16_HA: | |
4612 | case R_PPC64_TPREL16_DS: | |
4613 | case R_PPC64_TPREL16_LO_DS: | |
4614 | case R_PPC64_TPREL16_HIGHER: | |
4615 | case R_PPC64_TPREL16_HIGHERA: | |
4616 | case R_PPC64_TPREL16_HIGHEST: | |
4617 | case R_PPC64_TPREL16_HIGHESTA: | |
4618 | if (info->shared) | |
4619 | { | |
4620 | info->flags |= DF_STATIC_TLS; | |
4621 | goto dodyn; | |
5d1634d7 AM |
4622 | } |
4623 | break; | |
4624 | ||
e86ce104 | 4625 | case R_PPC64_ADDR64: |
1e2f5b6e | 4626 | if (opd_sym_map != NULL |
1e2f5b6e | 4627 | && rel + 1 < rel_end |
4ce794b7 | 4628 | && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC) |
1e2f5b6e | 4629 | { |
8387904d AM |
4630 | if (h != NULL) |
4631 | { | |
4632 | if (h->root.root.string[0] == '.' | |
4633 | && h->root.root.string[1] != 0 | |
4634 | && get_fdh ((struct ppc_link_hash_entry *) h, htab)) | |
4635 | ; | |
4636 | else | |
4637 | ((struct ppc_link_hash_entry *) h)->is_func = 1; | |
4638 | } | |
4639 | else | |
4640 | { | |
4641 | asection *s; | |
1e2f5b6e | 4642 | |
8387904d AM |
4643 | s = bfd_section_from_r_symndx (abfd, &htab->sym_sec, sec, |
4644 | r_symndx); | |
4645 | if (s == NULL) | |
4646 | return FALSE; | |
4647 | else if (s != sec) | |
3f764659 | 4648 | opd_sym_map[rel->r_offset / 8] = s; |
8387904d | 4649 | } |
1e2f5b6e | 4650 | } |
e86ce104 AM |
4651 | /* Fall through. */ |
4652 | ||
04c9666a | 4653 | case R_PPC64_REL30: |
5bd4f169 | 4654 | case R_PPC64_REL32: |
04c9666a | 4655 | case R_PPC64_REL64: |
65f38f15 AM |
4656 | case R_PPC64_ADDR14: |
4657 | case R_PPC64_ADDR14_BRNTAKEN: | |
4658 | case R_PPC64_ADDR14_BRTAKEN: | |
4659 | case R_PPC64_ADDR16: | |
4660 | case R_PPC64_ADDR16_DS: | |
4661 | case R_PPC64_ADDR16_HA: | |
4662 | case R_PPC64_ADDR16_HI: | |
4663 | case R_PPC64_ADDR16_HIGHER: | |
4664 | case R_PPC64_ADDR16_HIGHERA: | |
4665 | case R_PPC64_ADDR16_HIGHEST: | |
4666 | case R_PPC64_ADDR16_HIGHESTA: | |
4667 | case R_PPC64_ADDR16_LO: | |
4668 | case R_PPC64_ADDR16_LO_DS: | |
4669 | case R_PPC64_ADDR24: | |
65f38f15 | 4670 | case R_PPC64_ADDR32: |
65f38f15 AM |
4671 | case R_PPC64_UADDR16: |
4672 | case R_PPC64_UADDR32: | |
4673 | case R_PPC64_UADDR64: | |
5bd4f169 | 4674 | case R_PPC64_TOC: |
81848ca0 AM |
4675 | if (h != NULL && !info->shared) |
4676 | /* We may need a copy reloc. */ | |
f5385ebf | 4677 | h->non_got_ref = 1; |
81848ca0 | 4678 | |
41bd81ab | 4679 | /* Don't propagate .opd relocs. */ |
1e2f5b6e | 4680 | if (NO_OPD_RELOCS && opd_sym_map != NULL) |
e86ce104 | 4681 | break; |
e86ce104 | 4682 | |
65f38f15 AM |
4683 | /* If we are creating a shared library, and this is a reloc |
4684 | against a global symbol, or a non PC relative reloc | |
4685 | against a local symbol, then we need to copy the reloc | |
4686 | into the shared library. However, if we are linking with | |
4687 | -Bsymbolic, we do not need to copy a reloc against a | |
4688 | global symbol which is defined in an object we are | |
4689 | including in the link (i.e., DEF_REGULAR is set). At | |
4690 | this point we have not seen all the input files, so it is | |
4691 | possible that DEF_REGULAR is not set now but will be set | |
4692 | later (it is never cleared). In case of a weak definition, | |
4693 | DEF_REGULAR may be cleared later by a strong definition in | |
4694 | a shared library. We account for that possibility below by | |
f4656909 | 4695 | storing information in the dyn_relocs field of the hash |
65f38f15 AM |
4696 | table entry. A similar situation occurs when creating |
4697 | shared libraries and symbol visibility changes render the | |
4698 | symbol local. | |
4699 | ||
4700 | If on the other hand, we are creating an executable, we | |
4701 | may need to keep relocations for symbols satisfied by a | |
4702 | dynamic library if we manage to avoid copy relocs for the | |
4703 | symbol. */ | |
411e1bfb | 4704 | dodyn: |
65f38f15 | 4705 | if ((info->shared |
411e1bfb | 4706 | && (MUST_BE_DYN_RELOC (r_type) |
65f38f15 AM |
4707 | || (h != NULL |
4708 | && (! info->symbolic | |
4709 | || h->root.type == bfd_link_hash_defweak | |
f5385ebf | 4710 | || !h->def_regular)))) |
f4656909 AM |
4711 | || (ELIMINATE_COPY_RELOCS |
4712 | && !info->shared | |
65f38f15 AM |
4713 | && h != NULL |
4714 | && (h->root.type == bfd_link_hash_defweak | |
f5385ebf | 4715 | || !h->def_regular))) |
5bd4f169 | 4716 | { |
ec338859 AM |
4717 | struct ppc_dyn_relocs *p; |
4718 | struct ppc_dyn_relocs **head; | |
4719 | ||
65f38f15 AM |
4720 | /* We must copy these reloc types into the output file. |
4721 | Create a reloc section in dynobj and make room for | |
4722 | this reloc. */ | |
5bd4f169 AM |
4723 | if (sreloc == NULL) |
4724 | { | |
4725 | const char *name; | |
65f38f15 | 4726 | bfd *dynobj; |
5bd4f169 AM |
4727 | |
4728 | name = (bfd_elf_string_from_elf_section | |
4729 | (abfd, | |
4730 | elf_elfheader (abfd)->e_shstrndx, | |
4731 | elf_section_data (sec)->rel_hdr.sh_name)); | |
4732 | if (name == NULL) | |
b34976b6 | 4733 | return FALSE; |
5bd4f169 | 4734 | |
65f38f15 AM |
4735 | if (strncmp (name, ".rela", 5) != 0 |
4736 | || strcmp (bfd_get_section_name (abfd, sec), | |
4737 | name + 5) != 0) | |
4738 | { | |
4739 | (*_bfd_error_handler) | |
d003868e AM |
4740 | (_("%B: bad relocation section name `%s\'"), |
4741 | abfd, name); | |
5d1634d7 | 4742 | bfd_set_error (bfd_error_bad_value); |
65f38f15 AM |
4743 | } |
4744 | ||
65f38f15 | 4745 | dynobj = htab->elf.dynobj; |
5bd4f169 AM |
4746 | sreloc = bfd_get_section_by_name (dynobj, name); |
4747 | if (sreloc == NULL) | |
4748 | { | |
4749 | flagword flags; | |
4750 | ||
5bd4f169 | 4751 | flags = (SEC_HAS_CONTENTS | SEC_READONLY |
77623a34 AM |
4752 | | SEC_IN_MEMORY | SEC_LINKER_CREATED |
4753 | | SEC_ALLOC | SEC_LOAD); | |
3496cb2a L |
4754 | sreloc = bfd_make_section_with_flags (dynobj, |
4755 | name, | |
4756 | flags); | |
5bd4f169 | 4757 | if (sreloc == NULL |
65f38f15 | 4758 | || ! bfd_set_section_alignment (dynobj, sreloc, 3)) |
b34976b6 | 4759 | return FALSE; |
5bd4f169 | 4760 | } |
65f38f15 | 4761 | elf_section_data (sec)->sreloc = sreloc; |
5bd4f169 AM |
4762 | } |
4763 | ||
65f38f15 AM |
4764 | /* If this is a global symbol, we count the number of |
4765 | relocations we need for this symbol. */ | |
4766 | if (h != NULL) | |
4767 | { | |
ec338859 | 4768 | head = &((struct ppc_link_hash_entry *) h)->dyn_relocs; |
65f38f15 AM |
4769 | } |
4770 | else | |
4771 | { | |
ec338859 AM |
4772 | /* Track dynamic relocs needed for local syms too. |
4773 | We really need local syms available to do this | |
4774 | easily. Oh well. */ | |
4775 | ||
4776 | asection *s; | |
4777 | s = bfd_section_from_r_symndx (abfd, &htab->sym_sec, | |
4778 | sec, r_symndx); | |
4779 | if (s == NULL) | |
b34976b6 | 4780 | return FALSE; |
ec338859 AM |
4781 | |
4782 | head = ((struct ppc_dyn_relocs **) | |
4783 | &elf_section_data (s)->local_dynrel); | |
65f38f15 | 4784 | } |
ec338859 AM |
4785 | |
4786 | p = *head; | |
4787 | if (p == NULL || p->sec != sec) | |
4788 | { | |
4ce794b7 | 4789 | p = bfd_alloc (htab->elf.dynobj, sizeof *p); |
ec338859 | 4790 | if (p == NULL) |
b34976b6 | 4791 | return FALSE; |
ec338859 AM |
4792 | p->next = *head; |
4793 | *head = p; | |
4794 | p->sec = sec; | |
4795 | p->count = 0; | |
4796 | p->pc_count = 0; | |
4797 | } | |
4798 | ||
4799 | p->count += 1; | |
411e1bfb | 4800 | if (!MUST_BE_DYN_RELOC (r_type)) |
ec338859 | 4801 | p->pc_count += 1; |
65f38f15 | 4802 | } |
5bd4f169 | 4803 | break; |
65f38f15 AM |
4804 | |
4805 | default: | |
96e0dda4 | 4806 | break; |
5bd4f169 AM |
4807 | } |
4808 | } | |
4809 | ||
b34976b6 | 4810 | return TRUE; |
5bd4f169 AM |
4811 | } |
4812 | ||
8387904d AM |
4813 | /* OFFSET in OPD_SEC specifies a function descriptor. Return the address |
4814 | of the code entry point, and its section. */ | |
4815 | ||
4816 | static bfd_vma | |
4817 | opd_entry_value (asection *opd_sec, | |
4818 | bfd_vma offset, | |
4819 | asection **code_sec, | |
4820 | bfd_vma *code_off) | |
4821 | { | |
4822 | bfd *opd_bfd = opd_sec->owner; | |
8860955f | 4823 | Elf_Internal_Rela *relocs; |
8387904d | 4824 | Elf_Internal_Rela *lo, *hi, *look; |
645ea6a9 | 4825 | bfd_vma val; |
8387904d | 4826 | |
4b85d634 AM |
4827 | /* No relocs implies we are linking a --just-symbols object. */ |
4828 | if (opd_sec->reloc_count == 0) | |
4829 | { | |
4830 | bfd_vma val; | |
4831 | ||
4832 | if (!bfd_get_section_contents (opd_bfd, opd_sec, &val, offset, 8)) | |
4833 | return (bfd_vma) -1; | |
3b36f7e6 | 4834 | |
4b85d634 AM |
4835 | if (code_sec != NULL) |
4836 | { | |
4837 | asection *sec, *likely = NULL; | |
4838 | for (sec = opd_bfd->sections; sec != NULL; sec = sec->next) | |
4839 | if (sec->vma <= val | |
4840 | && (sec->flags & SEC_LOAD) != 0 | |
4841 | && (sec->flags & SEC_ALLOC) != 0) | |
4842 | likely = sec; | |
4843 | if (likely != NULL) | |
4844 | { | |
4845 | *code_sec = likely; | |
4846 | if (code_off != NULL) | |
4847 | *code_off = val - likely->vma; | |
4848 | } | |
4849 | } | |
4850 | return val; | |
4851 | } | |
4852 | ||
8860955f AM |
4853 | relocs = ppc64_elf_tdata (opd_bfd)->opd_relocs; |
4854 | if (relocs == NULL) | |
4855 | relocs = _bfd_elf_link_read_relocs (opd_bfd, opd_sec, NULL, NULL, TRUE); | |
645ea6a9 | 4856 | |
8387904d | 4857 | /* Go find the opd reloc at the sym address. */ |
8860955f | 4858 | lo = relocs; |
8387904d AM |
4859 | BFD_ASSERT (lo != NULL); |
4860 | hi = lo + opd_sec->reloc_count - 1; /* ignore last reloc */ | |
645ea6a9 | 4861 | val = (bfd_vma) -1; |
8387904d AM |
4862 | while (lo < hi) |
4863 | { | |
4864 | look = lo + (hi - lo) / 2; | |
4865 | if (look->r_offset < offset) | |
4866 | lo = look + 1; | |
4867 | else if (look->r_offset > offset) | |
4868 | hi = look; | |
4869 | else | |
4870 | { | |
4871 | Elf_Internal_Shdr *symtab_hdr = &elf_tdata (opd_bfd)->symtab_hdr; | |
4872 | if (ELF64_R_TYPE (look->r_info) == R_PPC64_ADDR64 | |
4873 | && ELF64_R_TYPE ((look + 1)->r_info) == R_PPC64_TOC) | |
4874 | { | |
4875 | unsigned long symndx = ELF64_R_SYM (look->r_info); | |
8387904d AM |
4876 | asection *sec; |
4877 | ||
4878 | if (symndx < symtab_hdr->sh_info) | |
4879 | { | |
4880 | Elf_Internal_Sym *sym; | |
4881 | ||
4882 | sym = (Elf_Internal_Sym *) symtab_hdr->contents; | |
4883 | if (sym == NULL) | |
4884 | { | |
4885 | sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr, | |
4886 | symtab_hdr->sh_info, | |
4887 | 0, NULL, NULL, NULL); | |
4888 | if (sym == NULL) | |
645ea6a9 | 4889 | break; |
8387904d AM |
4890 | symtab_hdr->contents = (bfd_byte *) sym; |
4891 | } | |
4892 | ||
4893 | sym += symndx; | |
4894 | val = sym->st_value; | |
4895 | sec = NULL; | |
4896 | if ((sym->st_shndx != SHN_UNDEF | |
4897 | && sym->st_shndx < SHN_LORESERVE) | |
4898 | || sym->st_shndx > SHN_HIRESERVE) | |
4899 | sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx); | |
4900 | BFD_ASSERT ((sec->flags & SEC_MERGE) == 0); | |
4901 | } | |
4902 | else | |
4903 | { | |
4904 | struct elf_link_hash_entry **sym_hashes; | |
4905 | struct elf_link_hash_entry *rh; | |
4906 | ||
4907 | sym_hashes = elf_sym_hashes (opd_bfd); | |
4908 | rh = sym_hashes[symndx - symtab_hdr->sh_info]; | |
4909 | while (rh->root.type == bfd_link_hash_indirect | |
4910 | || rh->root.type == bfd_link_hash_warning) | |
4911 | rh = ((struct elf_link_hash_entry *) rh->root.u.i.link); | |
4912 | BFD_ASSERT (rh->root.type == bfd_link_hash_defined | |
4913 | || rh->root.type == bfd_link_hash_defweak); | |
4914 | val = rh->root.u.def.value; | |
4915 | sec = rh->root.u.def.section; | |
4916 | } | |
4917 | val += look->r_addend; | |
4918 | if (code_off != NULL) | |
4919 | *code_off = val; | |
4920 | if (code_sec != NULL) | |
4921 | *code_sec = sec; | |
4922 | if (sec != NULL && sec->output_section != NULL) | |
4923 | val += sec->output_section->vma + sec->output_offset; | |
8387904d AM |
4924 | } |
4925 | break; | |
4926 | } | |
4927 | } | |
645ea6a9 | 4928 | |
645ea6a9 | 4929 | return val; |
8387904d AM |
4930 | } |
4931 | ||
5bd4f169 AM |
4932 | /* Return the section that should be marked against GC for a given |
4933 | relocation. */ | |
4934 | ||
4935 | static asection * | |
4ce794b7 | 4936 | ppc64_elf_gc_mark_hook (asection *sec, |
ccfa59ea | 4937 | struct bfd_link_info *info, |
4ce794b7 AM |
4938 | Elf_Internal_Rela *rel, |
4939 | struct elf_link_hash_entry *h, | |
4940 | Elf_Internal_Sym *sym) | |
5bd4f169 | 4941 | { |
ccfa59ea AM |
4942 | asection *rsec; |
4943 | ||
4944 | /* First mark all our entry sym sections. */ | |
4945 | if (info->gc_sym_list != NULL) | |
4946 | { | |
4947 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
4948 | struct bfd_sym_chain *sym = info->gc_sym_list; | |
4949 | ||
4950 | info->gc_sym_list = NULL; | |
4951 | do | |
4952 | { | |
4953 | struct ppc_link_hash_entry *eh; | |
4954 | ||
4955 | eh = (struct ppc_link_hash_entry *) | |
4956 | elf_link_hash_lookup (&htab->elf, sym->name, FALSE, FALSE, FALSE); | |
4957 | if (eh == NULL) | |
4958 | continue; | |
4959 | if (eh->elf.root.type != bfd_link_hash_defined | |
4960 | && eh->elf.root.type != bfd_link_hash_defweak) | |
4961 | continue; | |
4962 | ||
c4f68ce3 AM |
4963 | if (eh->is_func_descriptor |
4964 | && (eh->oh->elf.root.type == bfd_link_hash_defined | |
4965 | || eh->oh->elf.root.type == bfd_link_hash_defweak)) | |
ccfa59ea | 4966 | rsec = eh->oh->elf.root.u.def.section; |
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 | ; | |
ccfa59ea AM |
4972 | else |
4973 | continue; | |
4974 | ||
4975 | if (!rsec->gc_mark) | |
4976 | _bfd_elf_gc_mark (info, rsec, ppc64_elf_gc_mark_hook); | |
4977 | ||
4978 | rsec = eh->elf.root.u.def.section; | |
4979 | if (!rsec->gc_mark) | |
4980 | _bfd_elf_gc_mark (info, rsec, ppc64_elf_gc_mark_hook); | |
4981 | ||
4982 | sym = sym->next; | |
4983 | } | |
4984 | while (sym != NULL); | |
4985 | } | |
4986 | ||
4987 | /* Syms return NULL if we're marking .opd, so we avoid marking all | |
4988 | function sections, as all functions are referenced in .opd. */ | |
4989 | rsec = NULL; | |
4990 | if (get_opd_info (sec) != NULL) | |
4991 | return rsec; | |
1e2f5b6e | 4992 | |
5bd4f169 AM |
4993 | if (h != NULL) |
4994 | { | |
04c9666a | 4995 | enum elf_ppc64_reloc_type r_type; |
ccfa59ea | 4996 | struct ppc_link_hash_entry *eh; |
a33d1f77 | 4997 | |
4ce794b7 | 4998 | r_type = ELF64_R_TYPE (rel->r_info); |
a33d1f77 | 4999 | switch (r_type) |
5bd4f169 AM |
5000 | { |
5001 | case R_PPC64_GNU_VTINHERIT: | |
5002 | case R_PPC64_GNU_VTENTRY: | |
5003 | break; | |
5004 | ||
5005 | default: | |
5006 | switch (h->root.type) | |
5007 | { | |
5008 | case bfd_link_hash_defined: | |
5009 | case bfd_link_hash_defweak: | |
ccfa59ea | 5010 | eh = (struct ppc_link_hash_entry *) h; |
c4f68ce3 AM |
5011 | if (eh->oh != NULL |
5012 | && eh->oh->is_func_descriptor | |
5013 | && (eh->oh->elf.root.type == bfd_link_hash_defined | |
5014 | || eh->oh->elf.root.type == bfd_link_hash_defweak)) | |
ccfa59ea | 5015 | eh = eh->oh; |
1e2f5b6e AM |
5016 | |
5017 | /* Function descriptor syms cause the associated | |
5018 | function code sym section to be marked. */ | |
c4f68ce3 AM |
5019 | if (eh->is_func_descriptor |
5020 | && (eh->oh->elf.root.type == bfd_link_hash_defined | |
5021 | || eh->oh->elf.root.type == bfd_link_hash_defweak)) | |
ccfa59ea AM |
5022 | { |
5023 | /* They also mark their opd section. */ | |
5024 | if (!eh->elf.root.u.def.section->gc_mark) | |
5025 | _bfd_elf_gc_mark (info, eh->elf.root.u.def.section, | |
5026 | ppc64_elf_gc_mark_hook); | |
5027 | ||
5028 | rsec = eh->oh->elf.root.u.def.section; | |
5029 | } | |
8387904d AM |
5030 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL |
5031 | && opd_entry_value (eh->elf.root.u.def.section, | |
5032 | eh->elf.root.u.def.value, | |
5033 | &rsec, NULL) != (bfd_vma) -1) | |
5034 | { | |
5035 | if (!eh->elf.root.u.def.section->gc_mark) | |
5036 | _bfd_elf_gc_mark (info, eh->elf.root.u.def.section, | |
5037 | ppc64_elf_gc_mark_hook); | |
5038 | } | |
ccfa59ea | 5039 | else |
1e2f5b6e AM |
5040 | rsec = h->root.u.def.section; |
5041 | break; | |
5bd4f169 AM |
5042 | |
5043 | case bfd_link_hash_common: | |
1e2f5b6e AM |
5044 | rsec = h->root.u.c.p->section; |
5045 | break; | |
5bd4f169 AM |
5046 | |
5047 | default: | |
5048 | break; | |
5049 | } | |
5050 | } | |
5051 | } | |
5052 | else | |
5053 | { | |
1e2f5b6e AM |
5054 | asection **opd_sym_section; |
5055 | ||
5056 | rsec = bfd_section_from_elf_index (sec->owner, sym->st_shndx); | |
ccfa59ea | 5057 | opd_sym_section = get_opd_info (rsec); |
1e2f5b6e | 5058 | if (opd_sym_section != NULL) |
ccfa59ea AM |
5059 | { |
5060 | if (!rsec->gc_mark) | |
5061 | _bfd_elf_gc_mark (info, rsec, ppc64_elf_gc_mark_hook); | |
5062 | ||
3f764659 | 5063 | rsec = opd_sym_section[sym->st_value / 8]; |
ccfa59ea | 5064 | } |
5bd4f169 AM |
5065 | } |
5066 | ||
1e2f5b6e | 5067 | return rsec; |
5bd4f169 AM |
5068 | } |
5069 | ||
65f38f15 AM |
5070 | /* Update the .got, .plt. and dynamic reloc reference counts for the |
5071 | section being removed. */ | |
5bd4f169 | 5072 | |
b34976b6 | 5073 | static bfd_boolean |
4ce794b7 AM |
5074 | ppc64_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info, |
5075 | asection *sec, const Elf_Internal_Rela *relocs) | |
5bd4f169 | 5076 | { |
411e1bfb | 5077 | struct ppc_link_hash_table *htab; |
5bd4f169 AM |
5078 | Elf_Internal_Shdr *symtab_hdr; |
5079 | struct elf_link_hash_entry **sym_hashes; | |
411e1bfb | 5080 | struct got_entry **local_got_ents; |
5bd4f169 | 5081 | const Elf_Internal_Rela *rel, *relend; |
5bd4f169 | 5082 | |
680a3378 AM |
5083 | if ((sec->flags & SEC_ALLOC) == 0) |
5084 | return TRUE; | |
5085 | ||
ec338859 AM |
5086 | elf_section_data (sec)->local_dynrel = NULL; |
5087 | ||
411e1bfb | 5088 | htab = ppc_hash_table (info); |
5bd4f169 AM |
5089 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
5090 | sym_hashes = elf_sym_hashes (abfd); | |
411e1bfb | 5091 | local_got_ents = elf_local_got_ents (abfd); |
5bd4f169 AM |
5092 | |
5093 | relend = relocs + sec->reloc_count; | |
5094 | for (rel = relocs; rel < relend; rel++) | |
a33d1f77 AM |
5095 | { |
5096 | unsigned long r_symndx; | |
04c9666a | 5097 | enum elf_ppc64_reloc_type r_type; |
58ac9f71 | 5098 | struct elf_link_hash_entry *h = NULL; |
411e1bfb | 5099 | char tls_type = 0; |
5bd4f169 | 5100 | |
a33d1f77 | 5101 | r_symndx = ELF64_R_SYM (rel->r_info); |
4ce794b7 | 5102 | r_type = ELF64_R_TYPE (rel->r_info); |
58ac9f71 AM |
5103 | if (r_symndx >= symtab_hdr->sh_info) |
5104 | { | |
5105 | struct ppc_link_hash_entry *eh; | |
5106 | struct ppc_dyn_relocs **pp; | |
5107 | struct ppc_dyn_relocs *p; | |
5108 | ||
5109 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
3eb128b2 AM |
5110 | while (h->root.type == bfd_link_hash_indirect |
5111 | || h->root.type == bfd_link_hash_warning) | |
5112 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
58ac9f71 AM |
5113 | eh = (struct ppc_link_hash_entry *) h; |
5114 | ||
5115 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next) | |
5116 | if (p->sec == sec) | |
5117 | { | |
5118 | /* Everything must go for SEC. */ | |
5119 | *pp = p->next; | |
5120 | break; | |
5121 | } | |
5122 | } | |
5123 | ||
a33d1f77 AM |
5124 | switch (r_type) |
5125 | { | |
411e1bfb AM |
5126 | case R_PPC64_GOT_TLSLD16: |
5127 | case R_PPC64_GOT_TLSLD16_LO: | |
5128 | case R_PPC64_GOT_TLSLD16_HI: | |
5129 | case R_PPC64_GOT_TLSLD16_HA: | |
e717da7e | 5130 | ppc64_tlsld_got (abfd)->refcount -= 1; |
951fd09b | 5131 | tls_type = TLS_TLS | TLS_LD; |
411e1bfb AM |
5132 | goto dogot; |
5133 | ||
5134 | case R_PPC64_GOT_TLSGD16: | |
5135 | case R_PPC64_GOT_TLSGD16_LO: | |
5136 | case R_PPC64_GOT_TLSGD16_HI: | |
5137 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b | 5138 | tls_type = TLS_TLS | TLS_GD; |
411e1bfb AM |
5139 | goto dogot; |
5140 | ||
5141 | case R_PPC64_GOT_TPREL16_DS: | |
5142 | case R_PPC64_GOT_TPREL16_LO_DS: | |
5143 | case R_PPC64_GOT_TPREL16_HI: | |
5144 | case R_PPC64_GOT_TPREL16_HA: | |
5145 | tls_type = TLS_TLS | TLS_TPREL; | |
5146 | goto dogot; | |
5147 | ||
5148 | case R_PPC64_GOT_DTPREL16_DS: | |
5149 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
5150 | case R_PPC64_GOT_DTPREL16_HI: | |
5151 | case R_PPC64_GOT_DTPREL16_HA: | |
5152 | tls_type = TLS_TLS | TLS_DTPREL; | |
5153 | goto dogot; | |
5154 | ||
a33d1f77 AM |
5155 | case R_PPC64_GOT16: |
5156 | case R_PPC64_GOT16_DS: | |
5157 | case R_PPC64_GOT16_HA: | |
5158 | case R_PPC64_GOT16_HI: | |
5159 | case R_PPC64_GOT16_LO: | |
5160 | case R_PPC64_GOT16_LO_DS: | |
411e1bfb AM |
5161 | dogot: |
5162 | { | |
5163 | struct got_entry *ent; | |
5164 | ||
58ac9f71 AM |
5165 | if (h != NULL) |
5166 | ent = h->got.glist; | |
411e1bfb AM |
5167 | else |
5168 | ent = local_got_ents[r_symndx]; | |
5169 | ||
5170 | for (; ent != NULL; ent = ent->next) | |
5171 | if (ent->addend == rel->r_addend | |
e717da7e | 5172 | && ent->owner == abfd |
411e1bfb AM |
5173 | && ent->tls_type == tls_type) |
5174 | break; | |
5175 | if (ent == NULL) | |
5176 | abort (); | |
5177 | if (ent->got.refcount > 0) | |
5178 | ent->got.refcount -= 1; | |
5179 | } | |
a33d1f77 | 5180 | break; |
65f38f15 | 5181 | |
a33d1f77 AM |
5182 | case R_PPC64_PLT16_HA: |
5183 | case R_PPC64_PLT16_HI: | |
5184 | case R_PPC64_PLT16_LO: | |
5185 | case R_PPC64_PLT32: | |
5186 | case R_PPC64_PLT64: | |
721956f4 AM |
5187 | case R_PPC64_REL14: |
5188 | case R_PPC64_REL14_BRNTAKEN: | |
5189 | case R_PPC64_REL14_BRTAKEN: | |
5d1634d7 | 5190 | case R_PPC64_REL24: |
58ac9f71 | 5191 | if (h != NULL) |
5d1634d7 | 5192 | { |
411e1bfb AM |
5193 | struct plt_entry *ent; |
5194 | ||
411e1bfb AM |
5195 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) |
5196 | if (ent->addend == rel->r_addend) | |
5197 | break; | |
5198 | if (ent == NULL) | |
5199 | abort (); | |
5200 | if (ent->plt.refcount > 0) | |
5201 | ent->plt.refcount -= 1; | |
5d1634d7 | 5202 | } |
e86ce104 | 5203 | break; |
5d1634d7 | 5204 | |
a33d1f77 AM |
5205 | default: |
5206 | break; | |
5207 | } | |
5208 | } | |
b34976b6 | 5209 | return TRUE; |
5bd4f169 AM |
5210 | } |
5211 | ||
deb0e272 AM |
5212 | /* The maximum size of .sfpr. */ |
5213 | #define SFPR_MAX (218*4) | |
5214 | ||
5215 | struct sfpr_def_parms | |
5216 | { | |
699733f6 AM |
5217 | const char name[12]; |
5218 | unsigned char lo, hi; | |
deb0e272 AM |
5219 | bfd_byte * (*write_ent) (bfd *, bfd_byte *, int); |
5220 | bfd_byte * (*write_tail) (bfd *, bfd_byte *, int); | |
5221 | }; | |
5222 | ||
5223 | /* Auto-generate _save*, _rest* functions in .sfpr. */ | |
5224 | ||
5225 | static unsigned int | |
5226 | sfpr_define (struct bfd_link_info *info, const struct sfpr_def_parms *parm) | |
5227 | { | |
5228 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
5229 | unsigned int i; | |
5230 | size_t len = strlen (parm->name); | |
5231 | bfd_boolean writing = FALSE; | |
699733f6 | 5232 | char sym[16]; |
deb0e272 AM |
5233 | |
5234 | memcpy (sym, parm->name, len); | |
5235 | sym[len + 2] = 0; | |
5236 | ||
5237 | for (i = parm->lo; i <= parm->hi; i++) | |
5238 | { | |
5239 | struct elf_link_hash_entry *h; | |
5240 | ||
5241 | sym[len + 0] = i / 10 + '0'; | |
5242 | sym[len + 1] = i % 10 + '0'; | |
5243 | h = elf_link_hash_lookup (&htab->elf, sym, FALSE, FALSE, TRUE); | |
5244 | if (h != NULL | |
f5385ebf | 5245 | && !h->def_regular) |
deb0e272 AM |
5246 | { |
5247 | h->root.type = bfd_link_hash_defined; | |
5248 | h->root.u.def.section = htab->sfpr; | |
5249 | h->root.u.def.value = htab->sfpr->size; | |
5250 | h->type = STT_FUNC; | |
f5385ebf | 5251 | h->def_regular = 1; |
deb0e272 AM |
5252 | _bfd_elf_link_hash_hide_symbol (info, h, TRUE); |
5253 | writing = TRUE; | |
5254 | if (htab->sfpr->contents == NULL) | |
5255 | { | |
5256 | htab->sfpr->contents = bfd_alloc (htab->elf.dynobj, SFPR_MAX); | |
5257 | if (htab->sfpr->contents == NULL) | |
5258 | return FALSE; | |
5259 | } | |
5260 | } | |
5261 | if (writing) | |
5262 | { | |
5263 | bfd_byte *p = htab->sfpr->contents + htab->sfpr->size; | |
5264 | if (i != parm->hi) | |
5265 | p = (*parm->write_ent) (htab->elf.dynobj, p, i); | |
5266 | else | |
5267 | p = (*parm->write_tail) (htab->elf.dynobj, p, i); | |
5268 | htab->sfpr->size = p - htab->sfpr->contents; | |
5269 | } | |
5270 | } | |
5271 | ||
5272 | return TRUE; | |
5273 | } | |
5274 | ||
5275 | static bfd_byte * | |
5276 | savegpr0 (bfd *abfd, bfd_byte *p, int r) | |
5277 | { | |
5278 | bfd_put_32 (abfd, STD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
5279 | return p + 4; | |
5280 | } | |
5281 | ||
5282 | static bfd_byte * | |
5283 | savegpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
5284 | { | |
5285 | p = savegpr0 (abfd, p, r); | |
5286 | bfd_put_32 (abfd, STD_R0_0R1 + 16, p); | |
5287 | p = p + 4; | |
5288 | bfd_put_32 (abfd, BLR, p); | |
5289 | return p + 4; | |
5290 | } | |
5291 | ||
5292 | static bfd_byte * | |
5293 | restgpr0 (bfd *abfd, bfd_byte *p, int r) | |
5294 | { | |
5295 | bfd_put_32 (abfd, LD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
5296 | return p + 4; | |
5297 | } | |
5298 | ||
5299 | static bfd_byte * | |
5300 | restgpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
5301 | { | |
5302 | bfd_put_32 (abfd, LD_R0_0R1 + 16, p); | |
5303 | p = p + 4; | |
5304 | p = restgpr0 (abfd, p, r); | |
5305 | bfd_put_32 (abfd, MTLR_R0, p); | |
5306 | p = p + 4; | |
5307 | if (r == 29) | |
5308 | { | |
5309 | p = restgpr0 (abfd, p, 30); | |
5310 | p = restgpr0 (abfd, p, 31); | |
5311 | } | |
5312 | bfd_put_32 (abfd, BLR, p); | |
5313 | return p + 4; | |
5314 | } | |
5315 | ||
5316 | static bfd_byte * | |
5317 | savegpr1 (bfd *abfd, bfd_byte *p, int r) | |
5318 | { | |
5319 | bfd_put_32 (abfd, STD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
5320 | return p + 4; | |
5321 | } | |
5322 | ||
5323 | static bfd_byte * | |
5324 | savegpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
5325 | { | |
5326 | p = savegpr1 (abfd, p, r); | |
5327 | bfd_put_32 (abfd, BLR, p); | |
5328 | return p + 4; | |
5329 | } | |
5330 | ||
5331 | static bfd_byte * | |
5332 | restgpr1 (bfd *abfd, bfd_byte *p, int r) | |
5333 | { | |
5334 | bfd_put_32 (abfd, LD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
5335 | return p + 4; | |
5336 | } | |
5337 | ||
5338 | static bfd_byte * | |
5339 | restgpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
5340 | { | |
5341 | p = restgpr1 (abfd, p, r); | |
5342 | bfd_put_32 (abfd, BLR, p); | |
5343 | return p + 4; | |
5344 | } | |
5345 | ||
5346 | static bfd_byte * | |
5347 | savefpr (bfd *abfd, bfd_byte *p, int r) | |
5348 | { | |
5349 | bfd_put_32 (abfd, STFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
5350 | return p + 4; | |
5351 | } | |
5352 | ||
5353 | static bfd_byte * | |
5354 | savefpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
5355 | { | |
5356 | p = savefpr (abfd, p, r); | |
5357 | bfd_put_32 (abfd, STD_R0_0R1 + 16, p); | |
5358 | p = p + 4; | |
5359 | bfd_put_32 (abfd, BLR, p); | |
5360 | return p + 4; | |
5361 | } | |
5362 | ||
5363 | static bfd_byte * | |
5364 | restfpr (bfd *abfd, bfd_byte *p, int r) | |
5365 | { | |
5366 | bfd_put_32 (abfd, LFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
5367 | return p + 4; | |
5368 | } | |
5369 | ||
5370 | static bfd_byte * | |
5371 | restfpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
5372 | { | |
5373 | bfd_put_32 (abfd, LD_R0_0R1 + 16, p); | |
5374 | p = p + 4; | |
5375 | p = restfpr (abfd, p, r); | |
5376 | bfd_put_32 (abfd, MTLR_R0, p); | |
5377 | p = p + 4; | |
5378 | if (r == 29) | |
5379 | { | |
5380 | p = restfpr (abfd, p, 30); | |
5381 | p = restfpr (abfd, p, 31); | |
5382 | } | |
5383 | bfd_put_32 (abfd, BLR, p); | |
5384 | return p + 4; | |
5385 | } | |
5386 | ||
5387 | static bfd_byte * | |
5388 | savefpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
5389 | { | |
5390 | p = savefpr (abfd, p, r); | |
5391 | bfd_put_32 (abfd, BLR, p); | |
5392 | return p + 4; | |
5393 | } | |
5394 | ||
5395 | static bfd_byte * | |
5396 | restfpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
5397 | { | |
5398 | p = restfpr (abfd, p, r); | |
5399 | bfd_put_32 (abfd, BLR, p); | |
5400 | return p + 4; | |
5401 | } | |
5402 | ||
5403 | static bfd_byte * | |
5404 | savevr (bfd *abfd, bfd_byte *p, int r) | |
5405 | { | |
5406 | bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p); | |
5407 | p = p + 4; | |
5408 | bfd_put_32 (abfd, STVX_VR0_R12_R0 + (r << 21), p); | |
5409 | return p + 4; | |
5410 | } | |
5411 | ||
5412 | static bfd_byte * | |
5413 | savevr_tail (bfd *abfd, bfd_byte *p, int r) | |
5414 | { | |
5415 | p = savevr (abfd, p, r); | |
5416 | bfd_put_32 (abfd, BLR, p); | |
5417 | return p + 4; | |
5418 | } | |
5419 | ||
5420 | static bfd_byte * | |
5421 | restvr (bfd *abfd, bfd_byte *p, int r) | |
5422 | { | |
5423 | bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p); | |
5424 | p = p + 4; | |
5425 | bfd_put_32 (abfd, LVX_VR0_R12_R0 + (r << 21), p); | |
5426 | return p + 4; | |
5427 | } | |
5428 | ||
5429 | static bfd_byte * | |
5430 | restvr_tail (bfd *abfd, bfd_byte *p, int r) | |
5431 | { | |
5432 | p = restvr (abfd, p, r); | |
5433 | bfd_put_32 (abfd, BLR, p); | |
5434 | return p + 4; | |
5435 | } | |
5436 | ||
e86ce104 AM |
5437 | /* Called via elf_link_hash_traverse to transfer dynamic linking |
5438 | information on function code symbol entries to their corresponding | |
5439 | function descriptor symbol entries. */ | |
deb0e272 | 5440 | |
b34976b6 | 5441 | static bfd_boolean |
4ce794b7 | 5442 | func_desc_adjust (struct elf_link_hash_entry *h, void *inf) |
5bd4f169 | 5443 | { |
e86ce104 | 5444 | struct bfd_link_info *info; |
65f38f15 | 5445 | struct ppc_link_hash_table *htab; |
411e1bfb | 5446 | struct plt_entry *ent; |
50bc7936 AM |
5447 | struct ppc_link_hash_entry *fh; |
5448 | struct ppc_link_hash_entry *fdh; | |
5449 | bfd_boolean force_local; | |
5bd4f169 | 5450 | |
50bc7936 AM |
5451 | fh = (struct ppc_link_hash_entry *) h; |
5452 | if (fh->elf.root.type == bfd_link_hash_indirect) | |
b34976b6 | 5453 | return TRUE; |
e86ce104 | 5454 | |
50bc7936 AM |
5455 | if (fh->elf.root.type == bfd_link_hash_warning) |
5456 | fh = (struct ppc_link_hash_entry *) fh->elf.root.u.i.link; | |
e92d460e | 5457 | |
4ce794b7 | 5458 | info = inf; |
65f38f15 | 5459 | htab = ppc_hash_table (info); |
5bd4f169 | 5460 | |
c09bdfe5 AM |
5461 | /* Resolve undefined references to dot-symbols as the value |
5462 | in the function descriptor, if we have one in a regular object. | |
5463 | This is to satisfy cases like ".quad .foo". Calls to functions | |
5464 | in dynamic objects are handled elsewhere. */ | |
5465 | if (fh->elf.root.type == bfd_link_hash_undefweak | |
5466 | && fh->was_undefined | |
5467 | && (fh->oh->elf.root.type == bfd_link_hash_defined | |
5468 | || fh->oh->elf.root.type == bfd_link_hash_defweak) | |
5469 | && get_opd_info (fh->oh->elf.root.u.def.section) != NULL | |
5470 | && opd_entry_value (fh->oh->elf.root.u.def.section, | |
5471 | fh->oh->elf.root.u.def.value, | |
5472 | &fh->elf.root.u.def.section, | |
5473 | &fh->elf.root.u.def.value) != (bfd_vma) -1) | |
5474 | { | |
5475 | fh->elf.root.type = fh->oh->elf.root.type; | |
f5385ebf | 5476 | fh->elf.forced_local = 1; |
c09bdfe5 AM |
5477 | } |
5478 | ||
e86ce104 AM |
5479 | /* If this is a function code symbol, transfer dynamic linking |
5480 | information to the function descriptor symbol. */ | |
50bc7936 | 5481 | if (!fh->is_func) |
b34976b6 | 5482 | return TRUE; |
e86ce104 | 5483 | |
50bc7936 | 5484 | for (ent = fh->elf.plt.plist; ent != NULL; ent = ent->next) |
411e1bfb AM |
5485 | if (ent->plt.refcount > 0) |
5486 | break; | |
50bc7936 AM |
5487 | if (ent == NULL |
5488 | || fh->elf.root.root.string[0] != '.' | |
5489 | || fh->elf.root.root.string[1] == '\0') | |
5490 | return TRUE; | |
5bd4f169 | 5491 | |
50bc7936 AM |
5492 | /* Find the corresponding function descriptor symbol. Create it |
5493 | as undefined if necessary. */ | |
5bd4f169 | 5494 | |
50bc7936 AM |
5495 | fdh = get_fdh (fh, htab); |
5496 | if (fdh != NULL) | |
5497 | while (fdh->elf.root.type == bfd_link_hash_indirect | |
5498 | || fdh->elf.root.type == bfd_link_hash_warning) | |
5499 | fdh = (struct ppc_link_hash_entry *) fdh->elf.root.u.i.link; | |
5bd4f169 | 5500 | |
50bc7936 AM |
5501 | if (fdh == NULL |
5502 | && info->shared | |
5503 | && (fh->elf.root.type == bfd_link_hash_undefined | |
5504 | || fh->elf.root.type == bfd_link_hash_undefweak)) | |
5505 | { | |
908b32fc | 5506 | fdh = make_fdh (info, fh); |
bb700d78 AM |
5507 | if (fdh == NULL) |
5508 | return FALSE; | |
50bc7936 | 5509 | } |
648cca2c | 5510 | |
908b32fc | 5511 | /* Fake function descriptors are made undefweak. If the function |
433817dd AM |
5512 | code symbol is strong undefined, make the fake sym the same. |
5513 | If the function code symbol is defined, then force the fake | |
5514 | descriptor local; We can't support overriding of symbols in a | |
5515 | shared library on a fake descriptor. */ | |
908b32fc AM |
5516 | |
5517 | if (fdh != NULL | |
5518 | && fdh->fake | |
433817dd | 5519 | && fdh->elf.root.type == bfd_link_hash_undefweak) |
908b32fc | 5520 | { |
433817dd AM |
5521 | if (fh->elf.root.type == bfd_link_hash_undefined) |
5522 | { | |
5523 | fdh->elf.root.type = bfd_link_hash_undefined; | |
5524 | bfd_link_add_undef (&htab->elf.root, &fdh->elf.root); | |
5525 | } | |
5526 | else if (fh->elf.root.type == bfd_link_hash_defined | |
5527 | || fh->elf.root.type == bfd_link_hash_defweak) | |
5528 | { | |
5529 | _bfd_elf_link_hash_hide_symbol (info, &fdh->elf, TRUE); | |
5530 | } | |
908b32fc AM |
5531 | } |
5532 | ||
50bc7936 | 5533 | if (fdh != NULL |
f5385ebf | 5534 | && !fdh->elf.forced_local |
50bc7936 | 5535 | && (info->shared |
f5385ebf AM |
5536 | || fdh->elf.def_dynamic |
5537 | || fdh->elf.ref_dynamic | |
50bc7936 AM |
5538 | || (fdh->elf.root.type == bfd_link_hash_undefweak |
5539 | && ELF_ST_VISIBILITY (fdh->elf.other) == STV_DEFAULT))) | |
5540 | { | |
5541 | if (fdh->elf.dynindx == -1) | |
c152c796 | 5542 | if (! bfd_elf_link_record_dynamic_symbol (info, &fdh->elf)) |
50bc7936 | 5543 | return FALSE; |
f5385ebf AM |
5544 | fdh->elf.ref_regular |= fh->elf.ref_regular; |
5545 | fdh->elf.ref_dynamic |= fh->elf.ref_dynamic; | |
5546 | fdh->elf.ref_regular_nonweak |= fh->elf.ref_regular_nonweak; | |
5547 | fdh->elf.non_got_ref |= fh->elf.non_got_ref; | |
50bc7936 | 5548 | if (ELF_ST_VISIBILITY (fh->elf.other) == STV_DEFAULT) |
e86ce104 | 5549 | { |
40d16e0b | 5550 | move_plt_plist (fh, fdh); |
f5385ebf | 5551 | fdh->elf.needs_plt = 1; |
e86ce104 | 5552 | } |
50bc7936 | 5553 | fdh->is_func_descriptor = 1; |
34814b9f AM |
5554 | fdh->oh = fh; |
5555 | fh->oh = fdh; | |
e86ce104 AM |
5556 | } |
5557 | ||
50bc7936 AM |
5558 | /* Now that the info is on the function descriptor, clear the |
5559 | function code sym info. Any function code syms for which we | |
5560 | don't have a definition in a regular file, we force local. | |
5561 | This prevents a shared library from exporting syms that have | |
5562 | been imported from another library. Function code syms that | |
5563 | are really in the library we must leave global to prevent the | |
5564 | linker dragging in a definition from a static library. */ | |
93f3fa99 AM |
5565 | force_local = (!fh->elf.def_regular |
5566 | || fdh == NULL | |
5567 | || !fdh->elf.def_regular | |
5568 | || fdh->elf.forced_local); | |
50bc7936 AM |
5569 | _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local); |
5570 | ||
b34976b6 | 5571 | return TRUE; |
e86ce104 | 5572 | } |
40b8271b | 5573 | |
e86ce104 | 5574 | /* Called near the start of bfd_elf_size_dynamic_sections. We use |
82bd7b59 AM |
5575 | this hook to a) provide some gcc support functions, and b) transfer |
5576 | dynamic linking information gathered so far on function code symbol | |
5577 | entries, to their corresponding function descriptor symbol entries. */ | |
deb0e272 | 5578 | |
b34976b6 | 5579 | static bfd_boolean |
4ce794b7 AM |
5580 | ppc64_elf_func_desc_adjust (bfd *obfd ATTRIBUTE_UNUSED, |
5581 | struct bfd_link_info *info) | |
e86ce104 AM |
5582 | { |
5583 | struct ppc_link_hash_table *htab; | |
82bd7b59 | 5584 | unsigned int i; |
deb0e272 AM |
5585 | const struct sfpr_def_parms funcs[] = |
5586 | { | |
5587 | { "_savegpr0_", 14, 31, savegpr0, savegpr0_tail }, | |
5588 | { "_restgpr0_", 14, 29, restgpr0, restgpr0_tail }, | |
5589 | { "_restgpr0_", 30, 31, restgpr0, restgpr0_tail }, | |
5590 | { "_savegpr1_", 14, 31, savegpr1, savegpr1_tail }, | |
5591 | { "_restgpr1_", 14, 31, restgpr1, restgpr1_tail }, | |
5592 | { "_savefpr_", 14, 31, savefpr, savefpr0_tail }, | |
5593 | { "_restfpr_", 14, 29, restfpr, restfpr0_tail }, | |
5594 | { "_restfpr_", 30, 31, restfpr, restfpr0_tail }, | |
5595 | { "._savef", 14, 31, savefpr, savefpr1_tail }, | |
5596 | { "._restf", 14, 31, restfpr, restfpr1_tail }, | |
5597 | { "_savevr_", 20, 31, savevr, savevr_tail }, | |
5598 | { "_restvr_", 20, 31, restvr, restvr_tail } | |
5599 | }; | |
e86ce104 AM |
5600 | |
5601 | htab = ppc_hash_table (info); | |
82bd7b59 AM |
5602 | if (htab->sfpr == NULL) |
5603 | /* We don't have any relocs. */ | |
b34976b6 | 5604 | return TRUE; |
82bd7b59 | 5605 | |
deb0e272 AM |
5606 | /* Provide any missing _save* and _rest* functions. */ |
5607 | htab->sfpr->size = 0; | |
5608 | for (i = 0; i < sizeof (funcs) / sizeof (funcs[0]); i++) | |
5609 | if (!sfpr_define (info, &funcs[i])) | |
5610 | return FALSE; | |
82bd7b59 | 5611 | |
4ce794b7 | 5612 | elf_link_hash_traverse (&htab->elf, func_desc_adjust, info); |
805fc799 | 5613 | |
eea6121a | 5614 | if (htab->sfpr->size == 0) |
8423293d | 5615 | htab->sfpr->flags |= SEC_EXCLUDE; |
82bd7b59 | 5616 | |
b34976b6 | 5617 | return TRUE; |
e86ce104 AM |
5618 | } |
5619 | ||
5620 | /* Adjust a symbol defined by a dynamic object and referenced by a | |
5621 | regular object. The current definition is in some section of the | |
5622 | dynamic object, but we're not including those sections. We have to | |
5623 | change the definition to something the rest of the link can | |
5624 | understand. */ | |
5625 | ||
b34976b6 | 5626 | static bfd_boolean |
4ce794b7 AM |
5627 | ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info *info, |
5628 | struct elf_link_hash_entry *h) | |
e86ce104 AM |
5629 | { |
5630 | struct ppc_link_hash_table *htab; | |
e86ce104 AM |
5631 | asection *s; |
5632 | unsigned int power_of_two; | |
5633 | ||
5634 | htab = ppc_hash_table (info); | |
5635 | ||
5636 | /* Deal with function syms. */ | |
5637 | if (h->type == STT_FUNC | |
f5385ebf | 5638 | || h->needs_plt) |
e86ce104 AM |
5639 | { |
5640 | /* Clear procedure linkage table information for any symbol that | |
5641 | won't need a .plt entry. */ | |
411e1bfb AM |
5642 | struct plt_entry *ent; |
5643 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) | |
5644 | if (ent->plt.refcount > 0) | |
5645 | break; | |
8387904d | 5646 | if (ent == NULL |
9c7a29a3 AM |
5647 | || SYMBOL_CALLS_LOCAL (info, h) |
5648 | || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
5649 | && h->root.type == bfd_link_hash_undefweak)) | |
40b8271b | 5650 | { |
411e1bfb | 5651 | h->plt.plist = NULL; |
f5385ebf | 5652 | h->needs_plt = 0; |
40b8271b | 5653 | } |
5bd4f169 | 5654 | } |
bbd7ec4a | 5655 | else |
411e1bfb | 5656 | h->plt.plist = NULL; |
5bd4f169 AM |
5657 | |
5658 | /* If this is a weak symbol, and there is a real definition, the | |
5659 | processor independent code will have arranged for us to see the | |
5660 | real definition first, and we can just use the same value. */ | |
f6e332e6 | 5661 | if (h->u.weakdef != NULL) |
5bd4f169 | 5662 | { |
f6e332e6 AM |
5663 | BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined |
5664 | || h->u.weakdef->root.type == bfd_link_hash_defweak); | |
5665 | h->root.u.def.section = h->u.weakdef->root.u.def.section; | |
5666 | h->root.u.def.value = h->u.weakdef->root.u.def.value; | |
a23b6845 | 5667 | if (ELIMINATE_COPY_RELOCS) |
f6e332e6 | 5668 | h->non_got_ref = h->u.weakdef->non_got_ref; |
b34976b6 | 5669 | return TRUE; |
5bd4f169 AM |
5670 | } |
5671 | ||
5bd4f169 AM |
5672 | /* If we are creating a shared library, we must presume that the |
5673 | only references to the symbol are via the global offset table. | |
5674 | For such cases we need not do anything here; the relocations will | |
5675 | be handled correctly by relocate_section. */ | |
5676 | if (info->shared) | |
b34976b6 | 5677 | return TRUE; |
5bd4f169 | 5678 | |
65f38f15 AM |
5679 | /* If there are no references to this symbol that do not use the |
5680 | GOT, we don't need to generate a copy reloc. */ | |
f5385ebf | 5681 | if (!h->non_got_ref) |
b34976b6 | 5682 | return TRUE; |
65f38f15 | 5683 | |
f4656909 | 5684 | if (ELIMINATE_COPY_RELOCS) |
65f38f15 | 5685 | { |
f4656909 AM |
5686 | struct ppc_link_hash_entry * eh; |
5687 | struct ppc_dyn_relocs *p; | |
65f38f15 | 5688 | |
f4656909 AM |
5689 | eh = (struct ppc_link_hash_entry *) h; |
5690 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
5691 | { | |
5692 | s = p->sec->output_section; | |
5693 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
5694 | break; | |
5695 | } | |
5696 | ||
5697 | /* If we didn't find any dynamic relocs in read-only sections, then | |
5698 | we'll be keeping the dynamic relocs and avoiding the copy reloc. */ | |
5699 | if (p == NULL) | |
5700 | { | |
f5385ebf | 5701 | h->non_got_ref = 0; |
f4656909 AM |
5702 | return TRUE; |
5703 | } | |
65f38f15 AM |
5704 | } |
5705 | ||
5d35169e | 5706 | if (h->plt.plist != NULL) |
97b639ba AM |
5707 | { |
5708 | /* We should never get here, but unfortunately there are versions | |
5709 | of gcc out there that improperly (for this ABI) put initialized | |
5710 | function pointers, vtable refs and suchlike in read-only | |
5711 | sections. Allow them to proceed, but warn that this might | |
5712 | break at runtime. */ | |
5713 | (*_bfd_error_handler) | |
5714 | (_("copy reloc against `%s' requires lazy plt linking; " | |
5715 | "avoid setting LD_BIND_NOW=1 or upgrade gcc"), | |
5716 | h->root.root.string); | |
5717 | } | |
5d35169e AM |
5718 | |
5719 | /* This is a reference to a symbol defined by a dynamic object which | |
5720 | is not a function. */ | |
5721 | ||
5bd4f169 AM |
5722 | /* We must allocate the symbol in our .dynbss section, which will |
5723 | become part of the .bss section of the executable. There will be | |
5724 | an entry for this symbol in the .dynsym section. The dynamic | |
5725 | object will contain position independent code, so all references | |
5726 | from the dynamic object to this symbol will go through the global | |
5727 | offset table. The dynamic linker will use the .dynsym entry to | |
5728 | determine the address it must put in the global offset table, so | |
5729 | both the dynamic object and the regular object will refer to the | |
5730 | same memory location for the variable. */ | |
5bd4f169 | 5731 | |
04c9666a AM |
5732 | /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker |
5733 | to copy the initial value out of the dynamic object and into the | |
5bd4f169 AM |
5734 | runtime process image. We need to remember the offset into the |
5735 | .rela.bss section we are going to use. */ | |
5736 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) | |
5737 | { | |
eea6121a | 5738 | htab->relbss->size += sizeof (Elf64_External_Rela); |
f5385ebf | 5739 | h->needs_copy = 1; |
5bd4f169 AM |
5740 | } |
5741 | ||
5742 | /* We need to figure out the alignment required for this symbol. I | |
5743 | have no idea how ELF linkers handle this. */ | |
5744 | power_of_two = bfd_log2 (h->size); | |
5745 | if (power_of_two > 4) | |
5746 | power_of_two = 4; | |
5747 | ||
5748 | /* Apply the required alignment. */ | |
4ce794b7 | 5749 | s = htab->dynbss; |
eea6121a | 5750 | s->size = BFD_ALIGN (s->size, (bfd_size_type) (1 << power_of_two)); |
65f38f15 | 5751 | if (power_of_two > bfd_get_section_alignment (htab->elf.dynobj, s)) |
5bd4f169 | 5752 | { |
65f38f15 | 5753 | if (! bfd_set_section_alignment (htab->elf.dynobj, s, power_of_two)) |
b34976b6 | 5754 | return FALSE; |
5bd4f169 AM |
5755 | } |
5756 | ||
5757 | /* Define the symbol as being at this point in the section. */ | |
5758 | h->root.u.def.section = s; | |
eea6121a | 5759 | h->root.u.def.value = s->size; |
5bd4f169 AM |
5760 | |
5761 | /* Increment the section size to make room for the symbol. */ | |
eea6121a | 5762 | s->size += h->size; |
5bd4f169 | 5763 | |
b34976b6 | 5764 | return TRUE; |
5bd4f169 AM |
5765 | } |
5766 | ||
e86ce104 AM |
5767 | /* If given a function descriptor symbol, hide both the function code |
5768 | sym and the descriptor. */ | |
5769 | static void | |
4ce794b7 AM |
5770 | ppc64_elf_hide_symbol (struct bfd_link_info *info, |
5771 | struct elf_link_hash_entry *h, | |
5772 | bfd_boolean force_local) | |
e86ce104 | 5773 | { |
34814b9f | 5774 | struct ppc_link_hash_entry *eh; |
e86ce104 AM |
5775 | _bfd_elf_link_hash_hide_symbol (info, h, force_local); |
5776 | ||
34814b9f AM |
5777 | eh = (struct ppc_link_hash_entry *) h; |
5778 | if (eh->is_func_descriptor) | |
e86ce104 | 5779 | { |
34814b9f | 5780 | struct ppc_link_hash_entry *fh = eh->oh; |
e86ce104 | 5781 | |
721956f4 | 5782 | if (fh == NULL) |
d1329ca3 AM |
5783 | { |
5784 | const char *p, *q; | |
5785 | struct ppc_link_hash_table *htab; | |
5786 | char save; | |
5787 | ||
5788 | /* We aren't supposed to use alloca in BFD because on | |
5789 | systems which do not have alloca the version in libiberty | |
5790 | calls xmalloc, which might cause the program to crash | |
5791 | when it runs out of memory. This function doesn't have a | |
5792 | return status, so there's no way to gracefully return an | |
5793 | error. So cheat. We know that string[-1] can be safely | |
34814b9f AM |
5794 | accessed; It's either a string in an ELF string table, |
5795 | or allocated in an objalloc structure. */ | |
d1329ca3 | 5796 | |
34814b9f | 5797 | p = eh->elf.root.root.string - 1; |
d1329ca3 AM |
5798 | save = *p; |
5799 | *(char *) p = '.'; | |
5800 | htab = ppc_hash_table (info); | |
34814b9f AM |
5801 | fh = (struct ppc_link_hash_entry *) |
5802 | elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE); | |
d1329ca3 AM |
5803 | *(char *) p = save; |
5804 | ||
5805 | /* Unfortunately, if it so happens that the string we were | |
5806 | looking for was allocated immediately before this string, | |
5807 | then we overwrote the string terminator. That's the only | |
5808 | reason the lookup should fail. */ | |
5809 | if (fh == NULL) | |
5810 | { | |
34814b9f AM |
5811 | q = eh->elf.root.root.string + strlen (eh->elf.root.root.string); |
5812 | while (q >= eh->elf.root.root.string && *q == *p) | |
d1329ca3 | 5813 | --q, --p; |
34814b9f AM |
5814 | if (q < eh->elf.root.root.string && *p == '.') |
5815 | fh = (struct ppc_link_hash_entry *) | |
5816 | elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE); | |
d1329ca3 AM |
5817 | } |
5818 | if (fh != NULL) | |
5819 | { | |
34814b9f AM |
5820 | eh->oh = fh; |
5821 | fh->oh = eh; | |
d1329ca3 AM |
5822 | } |
5823 | } | |
e86ce104 | 5824 | if (fh != NULL) |
34814b9f | 5825 | _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local); |
e86ce104 AM |
5826 | } |
5827 | } | |
5828 | ||
411e1bfb | 5829 | static bfd_boolean |
8843416a AM |
5830 | get_sym_h (struct elf_link_hash_entry **hp, |
5831 | Elf_Internal_Sym **symp, | |
5832 | asection **symsecp, | |
5833 | char **tls_maskp, | |
5834 | Elf_Internal_Sym **locsymsp, | |
5835 | unsigned long r_symndx, | |
5836 | bfd *ibfd) | |
411e1bfb AM |
5837 | { |
5838 | Elf_Internal_Shdr *symtab_hdr = &elf_tdata (ibfd)->symtab_hdr; | |
5839 | ||
5840 | if (r_symndx >= symtab_hdr->sh_info) | |
5841 | { | |
5842 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd); | |
5843 | struct elf_link_hash_entry *h; | |
5844 | ||
5845 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
5846 | while (h->root.type == bfd_link_hash_indirect | |
5847 | || h->root.type == bfd_link_hash_warning) | |
5848 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
5849 | ||
5850 | if (hp != NULL) | |
5851 | *hp = h; | |
5852 | ||
5853 | if (symp != NULL) | |
5854 | *symp = NULL; | |
5855 | ||
5856 | if (symsecp != NULL) | |
5857 | { | |
5858 | asection *symsec = NULL; | |
5859 | if (h->root.type == bfd_link_hash_defined | |
5860 | || h->root.type == bfd_link_hash_defweak) | |
5861 | symsec = h->root.u.def.section; | |
5862 | *symsecp = symsec; | |
5863 | } | |
5864 | ||
e7b938ca | 5865 | if (tls_maskp != NULL) |
411e1bfb AM |
5866 | { |
5867 | struct ppc_link_hash_entry *eh; | |
5868 | ||
5869 | eh = (struct ppc_link_hash_entry *) h; | |
e7b938ca | 5870 | *tls_maskp = &eh->tls_mask; |
411e1bfb AM |
5871 | } |
5872 | } | |
5873 | else | |
5874 | { | |
5875 | Elf_Internal_Sym *sym; | |
5876 | Elf_Internal_Sym *locsyms = *locsymsp; | |
5877 | ||
5878 | if (locsyms == NULL) | |
5879 | { | |
5880 | locsyms = (Elf_Internal_Sym *) symtab_hdr->contents; | |
5881 | if (locsyms == NULL) | |
5882 | locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr, | |
5883 | symtab_hdr->sh_info, | |
5884 | 0, NULL, NULL, NULL); | |
5885 | if (locsyms == NULL) | |
5886 | return FALSE; | |
5887 | *locsymsp = locsyms; | |
5888 | } | |
5889 | sym = locsyms + r_symndx; | |
5890 | ||
5891 | if (hp != NULL) | |
5892 | *hp = NULL; | |
5893 | ||
5894 | if (symp != NULL) | |
5895 | *symp = sym; | |
5896 | ||
5897 | if (symsecp != NULL) | |
5898 | { | |
5899 | asection *symsec = NULL; | |
5900 | if ((sym->st_shndx != SHN_UNDEF | |
5901 | && sym->st_shndx < SHN_LORESERVE) | |
5902 | || sym->st_shndx > SHN_HIRESERVE) | |
5903 | symsec = bfd_section_from_elf_index (ibfd, sym->st_shndx); | |
5904 | *symsecp = symsec; | |
5905 | } | |
5906 | ||
e7b938ca | 5907 | if (tls_maskp != NULL) |
411e1bfb AM |
5908 | { |
5909 | struct got_entry **lgot_ents; | |
e7b938ca | 5910 | char *tls_mask; |
411e1bfb | 5911 | |
e7b938ca | 5912 | tls_mask = NULL; |
411e1bfb AM |
5913 | lgot_ents = elf_local_got_ents (ibfd); |
5914 | if (lgot_ents != NULL) | |
5915 | { | |
e7b938ca AM |
5916 | char *lgot_masks = (char *) (lgot_ents + symtab_hdr->sh_info); |
5917 | tls_mask = &lgot_masks[r_symndx]; | |
411e1bfb | 5918 | } |
e7b938ca | 5919 | *tls_maskp = tls_mask; |
411e1bfb AM |
5920 | } |
5921 | } | |
5922 | return TRUE; | |
5923 | } | |
5924 | ||
e7b938ca | 5925 | /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on |
951fd09b | 5926 | error, 2 on a toc GD type suitable for optimization, 3 on a toc LD |
ad8e1ba5 | 5927 | type suitable for optimization, and 1 otherwise. */ |
951fd09b AM |
5928 | |
5929 | static int | |
0d4792f7 AM |
5930 | get_tls_mask (char **tls_maskp, unsigned long *toc_symndx, |
5931 | Elf_Internal_Sym **locsymsp, | |
4ce794b7 | 5932 | const Elf_Internal_Rela *rel, bfd *ibfd) |
411e1bfb AM |
5933 | { |
5934 | unsigned long r_symndx; | |
0d4792f7 | 5935 | int next_r; |
411e1bfb AM |
5936 | struct elf_link_hash_entry *h; |
5937 | Elf_Internal_Sym *sym; | |
5938 | asection *sec; | |
5939 | bfd_vma off; | |
5940 | ||
5941 | r_symndx = ELF64_R_SYM (rel->r_info); | |
e7b938ca | 5942 | if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd)) |
951fd09b | 5943 | return 0; |
411e1bfb | 5944 | |
e7b938ca | 5945 | if ((*tls_maskp != NULL && **tls_maskp != 0) |
411e1bfb AM |
5946 | || sec == NULL |
5947 | || ppc64_elf_section_data (sec)->t_symndx == NULL) | |
951fd09b | 5948 | return 1; |
411e1bfb AM |
5949 | |
5950 | /* Look inside a TOC section too. */ | |
5951 | if (h != NULL) | |
5952 | { | |
5953 | BFD_ASSERT (h->root.type == bfd_link_hash_defined); | |
5954 | off = h->root.u.def.value; | |
5955 | } | |
5956 | else | |
5957 | off = sym->st_value; | |
5958 | off += rel->r_addend; | |
5959 | BFD_ASSERT (off % 8 == 0); | |
5960 | r_symndx = ppc64_elf_section_data (sec)->t_symndx[off / 8]; | |
951fd09b | 5961 | next_r = ppc64_elf_section_data (sec)->t_symndx[off / 8 + 1]; |
e7b938ca | 5962 | if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd)) |
951fd09b | 5963 | return 0; |
0d4792f7 AM |
5964 | if (toc_symndx != NULL) |
5965 | *toc_symndx = r_symndx; | |
5966 | if ((h == NULL | |
5967 | || ((h->root.type == bfd_link_hash_defined | |
5968 | || h->root.type == bfd_link_hash_defweak) | |
f5385ebf | 5969 | && !h->def_dynamic)) |
0d4792f7 AM |
5970 | && (next_r == -1 || next_r == -2)) |
5971 | return 1 - next_r; | |
951fd09b | 5972 | return 1; |
411e1bfb AM |
5973 | } |
5974 | ||
754021d0 | 5975 | /* Adjust all global syms defined in opd sections. In gcc generated |
8387904d | 5976 | code for the old ABI, these will already have been done. */ |
754021d0 AM |
5977 | |
5978 | static bfd_boolean | |
5979 | adjust_opd_syms (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED) | |
5980 | { | |
5981 | struct ppc_link_hash_entry *eh; | |
5982 | asection *sym_sec; | |
5983 | long *opd_adjust; | |
5984 | ||
5985 | if (h->root.type == bfd_link_hash_indirect) | |
5986 | return TRUE; | |
5987 | ||
5988 | if (h->root.type == bfd_link_hash_warning) | |
5989 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
5990 | ||
5991 | if (h->root.type != bfd_link_hash_defined | |
5992 | && h->root.type != bfd_link_hash_defweak) | |
5993 | return TRUE; | |
5994 | ||
5995 | eh = (struct ppc_link_hash_entry *) h; | |
5996 | if (eh->adjust_done) | |
5997 | return TRUE; | |
5998 | ||
5999 | sym_sec = eh->elf.root.u.def.section; | |
4025353c AM |
6000 | opd_adjust = get_opd_info (sym_sec); |
6001 | if (opd_adjust != NULL) | |
754021d0 | 6002 | { |
3f764659 | 6003 | long adjust = opd_adjust[eh->elf.root.u.def.value / 8]; |
4025353c AM |
6004 | if (adjust == -1) |
6005 | { | |
6006 | /* This entry has been deleted. */ | |
433817dd | 6007 | asection *dsec = ppc64_elf_tdata (sym_sec->owner)->u.deleted_section; |
81688140 AM |
6008 | if (dsec == NULL) |
6009 | { | |
6010 | for (dsec = sym_sec->owner->sections; dsec; dsec = dsec->next) | |
6011 | if (elf_discarded_section (dsec)) | |
6012 | { | |
433817dd | 6013 | ppc64_elf_tdata (sym_sec->owner)->u.deleted_section = dsec; |
81688140 AM |
6014 | break; |
6015 | } | |
6016 | } | |
4025353c | 6017 | eh->elf.root.u.def.value = 0; |
81688140 | 6018 | eh->elf.root.u.def.section = dsec; |
4025353c AM |
6019 | } |
6020 | else | |
6021 | eh->elf.root.u.def.value += adjust; | |
754021d0 AM |
6022 | eh->adjust_done = 1; |
6023 | } | |
6024 | return TRUE; | |
6025 | } | |
6026 | ||
8c1d1bb8 AM |
6027 | /* Handles decrementing dynamic reloc counts for the reloc specified by |
6028 | R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM_SEC | |
6029 | have already been determined. */ | |
6030 | ||
6031 | static bfd_boolean | |
6032 | dec_dynrel_count (bfd_vma r_info, | |
6033 | asection *sec, | |
6034 | struct bfd_link_info *info, | |
6035 | Elf_Internal_Sym **local_syms, | |
6036 | struct elf_link_hash_entry *h, | |
6037 | asection *sym_sec) | |
6038 | { | |
6039 | enum elf_ppc64_reloc_type r_type; | |
6040 | struct ppc_dyn_relocs *p; | |
6041 | struct ppc_dyn_relocs **pp; | |
6042 | ||
6043 | /* Can this reloc be dynamic? This switch, and later tests here | |
6044 | should be kept in sync with the code in check_relocs. */ | |
6045 | r_type = ELF64_R_TYPE (r_info); | |
6046 | switch (r_type) | |
6047 | { | |
6048 | default: | |
6049 | return TRUE; | |
6050 | ||
6051 | case R_PPC64_TPREL16: | |
6052 | case R_PPC64_TPREL16_LO: | |
6053 | case R_PPC64_TPREL16_HI: | |
6054 | case R_PPC64_TPREL16_HA: | |
6055 | case R_PPC64_TPREL16_DS: | |
6056 | case R_PPC64_TPREL16_LO_DS: | |
6057 | case R_PPC64_TPREL16_HIGHER: | |
6058 | case R_PPC64_TPREL16_HIGHERA: | |
6059 | case R_PPC64_TPREL16_HIGHEST: | |
6060 | case R_PPC64_TPREL16_HIGHESTA: | |
6061 | if (!info->shared) | |
6062 | return TRUE; | |
6063 | ||
6064 | case R_PPC64_TPREL64: | |
6065 | case R_PPC64_DTPMOD64: | |
6066 | case R_PPC64_DTPREL64: | |
6067 | case R_PPC64_ADDR64: | |
6068 | case R_PPC64_REL30: | |
6069 | case R_PPC64_REL32: | |
6070 | case R_PPC64_REL64: | |
6071 | case R_PPC64_ADDR14: | |
6072 | case R_PPC64_ADDR14_BRNTAKEN: | |
6073 | case R_PPC64_ADDR14_BRTAKEN: | |
6074 | case R_PPC64_ADDR16: | |
6075 | case R_PPC64_ADDR16_DS: | |
6076 | case R_PPC64_ADDR16_HA: | |
6077 | case R_PPC64_ADDR16_HI: | |
6078 | case R_PPC64_ADDR16_HIGHER: | |
6079 | case R_PPC64_ADDR16_HIGHERA: | |
6080 | case R_PPC64_ADDR16_HIGHEST: | |
6081 | case R_PPC64_ADDR16_HIGHESTA: | |
6082 | case R_PPC64_ADDR16_LO: | |
6083 | case R_PPC64_ADDR16_LO_DS: | |
6084 | case R_PPC64_ADDR24: | |
6085 | case R_PPC64_ADDR32: | |
6086 | case R_PPC64_UADDR16: | |
6087 | case R_PPC64_UADDR32: | |
6088 | case R_PPC64_UADDR64: | |
6089 | case R_PPC64_TOC: | |
6090 | break; | |
6091 | } | |
6092 | ||
6093 | if (local_syms != NULL) | |
6094 | { | |
6095 | unsigned long r_symndx; | |
6096 | Elf_Internal_Sym *sym; | |
6097 | bfd *ibfd = sec->owner; | |
6098 | ||
6099 | r_symndx = ELF64_R_SYM (r_info); | |
6100 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, local_syms, r_symndx, ibfd)) | |
6101 | return FALSE; | |
6102 | } | |
6103 | ||
6104 | if ((info->shared | |
6105 | && (MUST_BE_DYN_RELOC (r_type) | |
6106 | || (h != NULL | |
6107 | && (!info->symbolic | |
6108 | || h->root.type == bfd_link_hash_defweak | |
6109 | || !h->def_regular)))) | |
6110 | || (ELIMINATE_COPY_RELOCS | |
6111 | && !info->shared | |
6112 | && h != NULL | |
6113 | && (h->root.type == bfd_link_hash_defweak | |
6114 | || !h->def_regular))) | |
6115 | ; | |
6116 | else | |
6117 | return TRUE; | |
6118 | ||
6119 | if (h != NULL) | |
6120 | pp = &((struct ppc_link_hash_entry *) h)->dyn_relocs; | |
6121 | else if (sym_sec != NULL) | |
6122 | pp = (struct ppc_dyn_relocs **) &elf_section_data (sym_sec)->local_dynrel; | |
6123 | else | |
6124 | pp = (struct ppc_dyn_relocs **) &elf_section_data (sec)->local_dynrel; | |
6125 | ||
6126 | while ((p = *pp) != NULL) | |
6127 | { | |
6128 | if (p->sec == sec) | |
6129 | { | |
6130 | if (!MUST_BE_DYN_RELOC (r_type)) | |
6131 | p->pc_count -= 1; | |
6132 | p->count -= 1; | |
6133 | if (p->count == 0) | |
6134 | *pp = p->next; | |
6135 | return TRUE; | |
6136 | } | |
6137 | pp = &p->next; | |
6138 | } | |
6139 | ||
6140 | (*_bfd_error_handler) (_("dynreloc miscount for %B, section %A"), | |
6141 | sec->owner, sec); | |
6142 | bfd_set_error (bfd_error_bad_value); | |
6143 | return FALSE; | |
6144 | } | |
6145 | ||
754021d0 AM |
6146 | /* Remove unused Official Procedure Descriptor entries. Currently we |
6147 | only remove those associated with functions in discarded link-once | |
6148 | sections, or weakly defined functions that have been overridden. It | |
6149 | would be possible to remove many more entries for statically linked | |
6150 | applications. */ | |
6151 | ||
b34976b6 | 6152 | bfd_boolean |
3f764659 JJ |
6153 | ppc64_elf_edit_opd (bfd *obfd, struct bfd_link_info *info, |
6154 | bfd_boolean non_overlapping) | |
1e2f5b6e AM |
6155 | { |
6156 | bfd *ibfd; | |
754021d0 | 6157 | bfd_boolean some_edited = FALSE; |
3f764659 | 6158 | asection *need_pad = NULL; |
1e2f5b6e | 6159 | |
411e1bfb | 6160 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) |
1e2f5b6e AM |
6161 | { |
6162 | asection *sec; | |
6163 | Elf_Internal_Rela *relstart, *rel, *relend; | |
6164 | Elf_Internal_Shdr *symtab_hdr; | |
6cdc0ccc | 6165 | Elf_Internal_Sym *local_syms; |
1e2f5b6e AM |
6166 | struct elf_link_hash_entry **sym_hashes; |
6167 | bfd_vma offset; | |
d6fe2dc1 | 6168 | bfd_size_type amt; |
4025353c | 6169 | long *opd_adjust; |
3f764659 JJ |
6170 | bfd_boolean need_edit, add_aux_fields; |
6171 | bfd_size_type cnt_16b = 0; | |
1e2f5b6e AM |
6172 | |
6173 | sec = bfd_get_section_by_name (ibfd, ".opd"); | |
6174 | if (sec == NULL) | |
6175 | continue; | |
6176 | ||
3f764659 | 6177 | amt = sec->size * sizeof (long) / 8; |
4025353c AM |
6178 | opd_adjust = get_opd_info (sec); |
6179 | if (opd_adjust == NULL) | |
d6fe2dc1 | 6180 | { |
4b85d634 AM |
6181 | /* check_relocs hasn't been called. Must be a ld -r link |
6182 | or --just-symbols object. */ | |
4025353c AM |
6183 | opd_adjust = bfd_zalloc (obfd, amt); |
6184 | ppc64_elf_section_data (sec)->opd.adjust = opd_adjust; | |
d6fe2dc1 | 6185 | } |
4025353c | 6186 | memset (opd_adjust, 0, amt); |
1e2f5b6e | 6187 | |
4b85d634 AM |
6188 | if (sec->sec_info_type == ELF_INFO_TYPE_JUST_SYMS) |
6189 | continue; | |
6190 | ||
1e2f5b6e AM |
6191 | if (sec->output_section == bfd_abs_section_ptr) |
6192 | continue; | |
6193 | ||
6194 | /* Look through the section relocs. */ | |
6195 | if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0) | |
6196 | continue; | |
6197 | ||
6cdc0ccc | 6198 | local_syms = NULL; |
1e2f5b6e AM |
6199 | symtab_hdr = &elf_tdata (ibfd)->symtab_hdr; |
6200 | sym_hashes = elf_sym_hashes (ibfd); | |
6201 | ||
6202 | /* Read the relocations. */ | |
4ce794b7 | 6203 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, |
45d6a902 | 6204 | info->keep_memory); |
1e2f5b6e | 6205 | if (relstart == NULL) |
b34976b6 | 6206 | return FALSE; |
1e2f5b6e AM |
6207 | |
6208 | /* First run through the relocs to check they are sane, and to | |
6209 | determine whether we need to edit this opd section. */ | |
b34976b6 | 6210 | need_edit = FALSE; |
3f764659 | 6211 | need_pad = sec; |
1e2f5b6e AM |
6212 | offset = 0; |
6213 | relend = relstart + sec->reloc_count; | |
50bc7936 | 6214 | for (rel = relstart; rel < relend; ) |
1e2f5b6e | 6215 | { |
04c9666a | 6216 | enum elf_ppc64_reloc_type r_type; |
1e2f5b6e AM |
6217 | unsigned long r_symndx; |
6218 | asection *sym_sec; | |
6219 | struct elf_link_hash_entry *h; | |
6220 | Elf_Internal_Sym *sym; | |
6221 | ||
3f764659 | 6222 | /* .opd contains a regular array of 16 or 24 byte entries. We're |
1e2f5b6e AM |
6223 | only interested in the reloc pointing to a function entry |
6224 | point. */ | |
50bc7936 AM |
6225 | if (rel->r_offset != offset |
6226 | || rel + 1 >= relend | |
6227 | || (rel + 1)->r_offset != offset + 8) | |
1e2f5b6e AM |
6228 | { |
6229 | /* If someone messes with .opd alignment then after a | |
6230 | "ld -r" we might have padding in the middle of .opd. | |
6231 | Also, there's nothing to prevent someone putting | |
6232 | something silly in .opd with the assembler. No .opd | |
b34976b6 | 6233 | optimization for them! */ |
3f764659 | 6234 | broken_opd: |
1e2f5b6e | 6235 | (*_bfd_error_handler) |
d003868e | 6236 | (_("%B: .opd is not a regular array of opd entries"), ibfd); |
b34976b6 | 6237 | need_edit = FALSE; |
1e2f5b6e AM |
6238 | break; |
6239 | } | |
6240 | ||
50bc7936 AM |
6241 | if ((r_type = ELF64_R_TYPE (rel->r_info)) != R_PPC64_ADDR64 |
6242 | || (r_type = ELF64_R_TYPE ((rel + 1)->r_info)) != R_PPC64_TOC) | |
6243 | { | |
6244 | (*_bfd_error_handler) | |
d003868e AM |
6245 | (_("%B: unexpected reloc type %u in .opd section"), |
6246 | ibfd, r_type); | |
50bc7936 AM |
6247 | need_edit = FALSE; |
6248 | break; | |
6249 | } | |
6250 | ||
1e2f5b6e | 6251 | r_symndx = ELF64_R_SYM (rel->r_info); |
411e1bfb AM |
6252 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, |
6253 | r_symndx, ibfd)) | |
50bc7936 | 6254 | goto error_ret; |
1e2f5b6e AM |
6255 | |
6256 | if (sym_sec == NULL || sym_sec->owner == NULL) | |
6257 | { | |
411e1bfb AM |
6258 | const char *sym_name; |
6259 | if (h != NULL) | |
6260 | sym_name = h->root.root.string; | |
6261 | else | |
26c61ae5 L |
6262 | sym_name = bfd_elf_sym_name (ibfd, symtab_hdr, sym, |
6263 | sym_sec); | |
411e1bfb | 6264 | |
1e2f5b6e | 6265 | (*_bfd_error_handler) |
d003868e AM |
6266 | (_("%B: undefined sym `%s' in .opd section"), |
6267 | ibfd, sym_name); | |
b34976b6 | 6268 | need_edit = FALSE; |
1e2f5b6e AM |
6269 | break; |
6270 | } | |
6271 | ||
51020317 AM |
6272 | /* opd entries are always for functions defined in the |
6273 | current input bfd. If the symbol isn't defined in the | |
6274 | input bfd, then we won't be using the function in this | |
6275 | bfd; It must be defined in a linkonce section in another | |
6276 | bfd, or is weak. It's also possible that we are | |
6277 | discarding the function due to a linker script /DISCARD/, | |
6278 | which we test for via the output_section. */ | |
6279 | if (sym_sec->owner != ibfd | |
6280 | || sym_sec->output_section == bfd_abs_section_ptr) | |
b34976b6 | 6281 | need_edit = TRUE; |
1e2f5b6e | 6282 | |
50bc7936 | 6283 | rel += 2; |
3f764659 JJ |
6284 | if (rel == relend |
6285 | || (rel + 1 == relend && rel->r_offset == offset + 16)) | |
6286 | { | |
6287 | if (sec->size == offset + 24) | |
6288 | { | |
6289 | need_pad = NULL; | |
6290 | break; | |
6291 | } | |
6292 | if (rel == relend && sec->size == offset + 16) | |
6293 | { | |
6294 | cnt_16b++; | |
6295 | break; | |
6296 | } | |
6297 | goto broken_opd; | |
6298 | } | |
6299 | ||
6300 | if (rel->r_offset == offset + 24) | |
6301 | offset += 24; | |
6302 | else if (rel->r_offset != offset + 16) | |
6303 | goto broken_opd; | |
6304 | else if (rel + 1 < relend | |
6305 | && ELF64_R_TYPE (rel[0].r_info) == R_PPC64_ADDR64 | |
6306 | && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOC) | |
6307 | { | |
6308 | offset += 16; | |
6309 | cnt_16b++; | |
6310 | } | |
6311 | else if (rel + 2 < relend | |
6312 | && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_ADDR64 | |
6313 | && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_TOC) | |
6314 | { | |
6315 | offset += 24; | |
6316 | rel += 1; | |
6317 | } | |
6318 | else | |
6319 | goto broken_opd; | |
1e2f5b6e AM |
6320 | } |
6321 | ||
3f764659 JJ |
6322 | add_aux_fields = non_overlapping && cnt_16b > 0; |
6323 | ||
6324 | if (need_edit || add_aux_fields) | |
1e2f5b6e AM |
6325 | { |
6326 | Elf_Internal_Rela *write_rel; | |
6327 | bfd_byte *rptr, *wptr; | |
3f764659 | 6328 | bfd_byte *new_contents = NULL; |
b34976b6 | 6329 | bfd_boolean skip; |
3f764659 | 6330 | long opd_ent_size; |
1e2f5b6e AM |
6331 | |
6332 | /* This seems a waste of time as input .opd sections are all | |
6333 | zeros as generated by gcc, but I suppose there's no reason | |
6334 | this will always be so. We might start putting something in | |
6335 | the third word of .opd entries. */ | |
6336 | if ((sec->flags & SEC_IN_MEMORY) == 0) | |
6337 | { | |
eea6121a AM |
6338 | bfd_byte *loc; |
6339 | if (!bfd_malloc_and_get_section (ibfd, sec, &loc)) | |
6cdc0ccc | 6340 | { |
eea6121a AM |
6341 | if (loc != NULL) |
6342 | free (loc); | |
50bc7936 | 6343 | error_ret: |
6cdc0ccc AM |
6344 | if (local_syms != NULL |
6345 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
6346 | free (local_syms); | |
6cdc0ccc AM |
6347 | if (elf_section_data (sec)->relocs != relstart) |
6348 | free (relstart); | |
b34976b6 | 6349 | return FALSE; |
6cdc0ccc | 6350 | } |
1e2f5b6e AM |
6351 | sec->contents = loc; |
6352 | sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS); | |
6353 | } | |
6354 | ||
6355 | elf_section_data (sec)->relocs = relstart; | |
6356 | ||
6357 | wptr = sec->contents; | |
6358 | rptr = sec->contents; | |
3f764659 JJ |
6359 | new_contents = sec->contents; |
6360 | ||
6361 | if (add_aux_fields) | |
6362 | { | |
6363 | new_contents = bfd_malloc (sec->size + cnt_16b * 8); | |
6364 | if (new_contents == NULL) | |
6365 | return FALSE; | |
6366 | need_pad = FALSE; | |
6367 | wptr = new_contents; | |
6368 | } | |
6369 | ||
1e2f5b6e | 6370 | write_rel = relstart; |
b34976b6 | 6371 | skip = FALSE; |
1e2f5b6e | 6372 | offset = 0; |
3f764659 | 6373 | opd_ent_size = 0; |
1e2f5b6e AM |
6374 | for (rel = relstart; rel < relend; rel++) |
6375 | { | |
50bc7936 AM |
6376 | unsigned long r_symndx; |
6377 | asection *sym_sec; | |
6378 | struct elf_link_hash_entry *h; | |
6379 | Elf_Internal_Sym *sym; | |
6380 | ||
6381 | r_symndx = ELF64_R_SYM (rel->r_info); | |
6382 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
d37c89e5 | 6383 | r_symndx, ibfd)) |
50bc7936 AM |
6384 | goto error_ret; |
6385 | ||
1e2f5b6e AM |
6386 | if (rel->r_offset == offset) |
6387 | { | |
50bc7936 | 6388 | struct ppc_link_hash_entry *fdh = NULL; |
3f764659 JJ |
6389 | |
6390 | /* See if the .opd entry is full 24 byte or | |
6391 | 16 byte (with fd_aux entry overlapped with next | |
6392 | fd_func). */ | |
6393 | opd_ent_size = 24; | |
6394 | if ((rel + 2 == relend && sec->size == offset + 16) | |
6395 | || (rel + 3 < relend | |
6396 | && rel[2].r_offset == offset + 16 | |
6397 | && rel[3].r_offset == offset + 24 | |
6398 | && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_ADDR64 | |
6399 | && ELF64_R_TYPE (rel[3].r_info) == R_PPC64_TOC)) | |
6400 | opd_ent_size = 16; | |
6401 | ||
4025353c AM |
6402 | if (h != NULL |
6403 | && h->root.root.string[0] == '.') | |
c4f68ce3 AM |
6404 | { |
6405 | fdh = get_fdh ((struct ppc_link_hash_entry *) h, | |
6406 | ppc_hash_table (info)); | |
6407 | if (fdh != NULL | |
6408 | && fdh->elf.root.type != bfd_link_hash_defined | |
6409 | && fdh->elf.root.type != bfd_link_hash_defweak) | |
6410 | fdh = NULL; | |
6411 | } | |
1e2f5b6e | 6412 | |
51020317 AM |
6413 | skip = (sym_sec->owner != ibfd |
6414 | || sym_sec->output_section == bfd_abs_section_ptr); | |
a4aa0fb7 AM |
6415 | if (skip) |
6416 | { | |
4025353c | 6417 | if (fdh != NULL && sym_sec->owner == ibfd) |
a4aa0fb7 AM |
6418 | { |
6419 | /* Arrange for the function descriptor sym | |
6420 | to be dropped. */ | |
d6fe2dc1 AM |
6421 | fdh->elf.root.u.def.value = 0; |
6422 | fdh->elf.root.u.def.section = sym_sec; | |
a4aa0fb7 | 6423 | } |
3f764659 | 6424 | opd_adjust[rel->r_offset / 8] = -1; |
a4aa0fb7 AM |
6425 | } |
6426 | else | |
1e2f5b6e AM |
6427 | { |
6428 | /* We'll be keeping this opd entry. */ | |
6429 | ||
4025353c | 6430 | if (fdh != NULL) |
1e2f5b6e | 6431 | { |
754021d0 AM |
6432 | /* Redefine the function descriptor symbol to |
6433 | this location in the opd section. It is | |
6434 | necessary to update the value here rather | |
6435 | than using an array of adjustments as we do | |
6436 | for local symbols, because various places | |
6437 | in the generic ELF code use the value | |
6438 | stored in u.def.value. */ | |
3f764659 | 6439 | fdh->elf.root.u.def.value = wptr - new_contents; |
754021d0 | 6440 | fdh->adjust_done = 1; |
1e2f5b6e | 6441 | } |
754021d0 AM |
6442 | |
6443 | /* Local syms are a bit tricky. We could | |
6444 | tweak them as they can be cached, but | |
6445 | we'd need to look through the local syms | |
6446 | for the function descriptor sym which we | |
6447 | don't have at the moment. So keep an | |
6448 | array of adjustments. */ | |
3f764659 JJ |
6449 | opd_adjust[rel->r_offset / 8] |
6450 | = (wptr - new_contents) - (rptr - sec->contents); | |
1e2f5b6e AM |
6451 | |
6452 | if (wptr != rptr) | |
3f764659 JJ |
6453 | memcpy (wptr, rptr, opd_ent_size); |
6454 | wptr += opd_ent_size; | |
6455 | if (add_aux_fields && opd_ent_size == 16) | |
6456 | { | |
6457 | memset (wptr, '\0', 8); | |
6458 | wptr += 8; | |
6459 | } | |
1e2f5b6e | 6460 | } |
3f764659 JJ |
6461 | rptr += opd_ent_size; |
6462 | offset += opd_ent_size; | |
1e2f5b6e AM |
6463 | } |
6464 | ||
50bc7936 AM |
6465 | if (skip) |
6466 | { | |
8c1d1bb8 AM |
6467 | if (!dec_dynrel_count (rel->r_info, sec, info, |
6468 | NULL, h, sym_sec)) | |
6469 | goto error_ret; | |
50bc7936 AM |
6470 | } |
6471 | else | |
1e2f5b6e | 6472 | { |
50bc7936 AM |
6473 | /* We need to adjust any reloc offsets to point to the |
6474 | new opd entries. While we're at it, we may as well | |
6475 | remove redundant relocs. */ | |
3f764659 | 6476 | rel->r_offset += opd_adjust[(offset - opd_ent_size) / 8]; |
1e2f5b6e AM |
6477 | if (write_rel != rel) |
6478 | memcpy (write_rel, rel, sizeof (*rel)); | |
6479 | ++write_rel; | |
6480 | } | |
6481 | } | |
6482 | ||
3f764659 | 6483 | sec->size = wptr - new_contents; |
1e2f5b6e | 6484 | sec->reloc_count = write_rel - relstart; |
3f764659 JJ |
6485 | if (add_aux_fields) |
6486 | { | |
6487 | free (sec->contents); | |
6488 | sec->contents = new_contents; | |
6489 | } | |
6490 | ||
cdcf6e38 AM |
6491 | /* Fudge the size too, as this is used later in |
6492 | elf_bfd_final_link if we are emitting relocs. */ | |
6493 | elf_section_data (sec)->rel_hdr.sh_size | |
6494 | = sec->reloc_count * elf_section_data (sec)->rel_hdr.sh_entsize; | |
6495 | BFD_ASSERT (elf_section_data (sec)->rel_hdr2 == NULL); | |
754021d0 | 6496 | some_edited = TRUE; |
1e2f5b6e | 6497 | } |
6cdc0ccc | 6498 | else if (elf_section_data (sec)->relocs != relstart) |
1e2f5b6e | 6499 | free (relstart); |
6cdc0ccc | 6500 | |
411e1bfb AM |
6501 | if (local_syms != NULL |
6502 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
6503 | { | |
6504 | if (!info->keep_memory) | |
6505 | free (local_syms); | |
6506 | else | |
6507 | symtab_hdr->contents = (unsigned char *) local_syms; | |
6508 | } | |
6509 | } | |
6510 | ||
754021d0 AM |
6511 | if (some_edited) |
6512 | elf_link_hash_traverse (elf_hash_table (info), adjust_opd_syms, NULL); | |
6513 | ||
3f764659 JJ |
6514 | /* If we are doing a final link and the last .opd entry is just 16 byte |
6515 | long, add a 8 byte padding after it. */ | |
6516 | if (need_pad != NULL && !info->relocatable) | |
6517 | { | |
6518 | bfd_byte *p; | |
6519 | ||
6520 | if ((need_pad->flags & SEC_IN_MEMORY) == 0) | |
6521 | { | |
6522 | BFD_ASSERT (need_pad->size > 0); | |
6523 | ||
6524 | p = bfd_malloc (need_pad->size + 8); | |
6525 | if (p == NULL) | |
6526 | return FALSE; | |
699733f6 | 6527 | |
3f764659 JJ |
6528 | if (! bfd_get_section_contents (need_pad->owner, need_pad, |
6529 | p, 0, need_pad->size)) | |
6530 | return FALSE; | |
6531 | ||
6532 | need_pad->contents = p; | |
6533 | need_pad->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS); | |
6534 | } | |
6535 | else | |
6536 | { | |
6537 | p = bfd_realloc (need_pad->contents, need_pad->size + 8); | |
6538 | if (p == NULL) | |
6539 | return FALSE; | |
6540 | ||
6541 | need_pad->contents = p; | |
6542 | } | |
6543 | ||
6544 | memset (need_pad->contents + need_pad->size, 0, 8); | |
6545 | need_pad->size += 8; | |
6546 | } | |
6547 | ||
411e1bfb AM |
6548 | return TRUE; |
6549 | } | |
6550 | ||
e1918d23 | 6551 | /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */ |
411e1bfb | 6552 | |
e1918d23 | 6553 | asection * |
4ce794b7 | 6554 | ppc64_elf_tls_setup (bfd *obfd, struct bfd_link_info *info) |
411e1bfb | 6555 | { |
411e1bfb AM |
6556 | struct ppc_link_hash_table *htab; |
6557 | ||
411e1bfb | 6558 | htab = ppc_hash_table (info); |
a48ebf4d AM |
6559 | if (htab->tls_get_addr != NULL) |
6560 | { | |
8387904d | 6561 | struct ppc_link_hash_entry *h = htab->tls_get_addr; |
a48ebf4d | 6562 | |
8387904d AM |
6563 | while (h->elf.root.type == bfd_link_hash_indirect |
6564 | || h->elf.root.type == bfd_link_hash_warning) | |
6565 | h = (struct ppc_link_hash_entry *) h->elf.root.u.i.link; | |
a48ebf4d AM |
6566 | |
6567 | htab->tls_get_addr = h; | |
8387904d AM |
6568 | |
6569 | if (htab->tls_get_addr_fd == NULL | |
6570 | && h->oh != NULL | |
c4f68ce3 AM |
6571 | && h->oh->is_func_descriptor |
6572 | && (h->oh->elf.root.type == bfd_link_hash_defined | |
6573 | || h->oh->elf.root.type == bfd_link_hash_defweak)) | |
8387904d AM |
6574 | htab->tls_get_addr_fd = h->oh; |
6575 | } | |
6576 | ||
6577 | if (htab->tls_get_addr_fd != NULL) | |
6578 | { | |
6579 | struct ppc_link_hash_entry *h = htab->tls_get_addr_fd; | |
6580 | ||
6581 | while (h->elf.root.type == bfd_link_hash_indirect | |
6582 | || h->elf.root.type == bfd_link_hash_warning) | |
6583 | h = (struct ppc_link_hash_entry *) h->elf.root.u.i.link; | |
6584 | ||
6585 | htab->tls_get_addr_fd = h; | |
a48ebf4d AM |
6586 | } |
6587 | ||
e1918d23 | 6588 | return _bfd_elf_tls_setup (obfd, info); |
951fd09b | 6589 | } |
411e1bfb | 6590 | |
951fd09b AM |
6591 | /* Run through all the TLS relocs looking for optimization |
6592 | opportunities. The linker has been hacked (see ppc64elf.em) to do | |
6593 | a preliminary section layout so that we know the TLS segment | |
6594 | offsets. We can't optimize earlier because some optimizations need | |
6595 | to know the tp offset, and we need to optimize before allocating | |
6596 | dynamic relocations. */ | |
6597 | ||
6598 | bfd_boolean | |
4ce794b7 | 6599 | ppc64_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED, struct bfd_link_info *info) |
951fd09b AM |
6600 | { |
6601 | bfd *ibfd; | |
6602 | asection *sec; | |
6603 | struct ppc_link_hash_table *htab; | |
6604 | ||
1049f94e | 6605 | if (info->relocatable || info->shared) |
411e1bfb AM |
6606 | return TRUE; |
6607 | ||
951fd09b | 6608 | htab = ppc_hash_table (info); |
411e1bfb AM |
6609 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) |
6610 | { | |
6611 | Elf_Internal_Sym *locsyms = NULL; | |
6612 | ||
6613 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
6614 | if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section)) | |
6615 | { | |
6616 | Elf_Internal_Rela *relstart, *rel, *relend; | |
6617 | int expecting_tls_get_addr; | |
6618 | ||
6619 | /* Read the relocations. */ | |
4ce794b7 | 6620 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, |
45d6a902 | 6621 | info->keep_memory); |
411e1bfb AM |
6622 | if (relstart == NULL) |
6623 | return FALSE; | |
6624 | ||
6625 | expecting_tls_get_addr = 0; | |
6626 | relend = relstart + sec->reloc_count; | |
6627 | for (rel = relstart; rel < relend; rel++) | |
6628 | { | |
6629 | enum elf_ppc64_reloc_type r_type; | |
6630 | unsigned long r_symndx; | |
6631 | struct elf_link_hash_entry *h; | |
6632 | Elf_Internal_Sym *sym; | |
6633 | asection *sym_sec; | |
e7b938ca AM |
6634 | char *tls_mask; |
6635 | char tls_set, tls_clear, tls_type = 0; | |
411e1bfb | 6636 | bfd_vma value; |
951fd09b | 6637 | bfd_boolean ok_tprel, is_local; |
411e1bfb AM |
6638 | |
6639 | r_symndx = ELF64_R_SYM (rel->r_info); | |
e7b938ca | 6640 | if (!get_sym_h (&h, &sym, &sym_sec, &tls_mask, &locsyms, |
411e1bfb AM |
6641 | r_symndx, ibfd)) |
6642 | { | |
6643 | err_free_rel: | |
6644 | if (elf_section_data (sec)->relocs != relstart) | |
6645 | free (relstart); | |
6646 | if (locsyms != NULL | |
6647 | && (elf_tdata (ibfd)->symtab_hdr.contents | |
6648 | != (unsigned char *) locsyms)) | |
6649 | free (locsyms); | |
6650 | return FALSE; | |
6651 | } | |
6652 | ||
6653 | if (h != NULL) | |
6654 | { | |
6655 | if (h->root.type != bfd_link_hash_defined | |
6656 | && h->root.type != bfd_link_hash_defweak) | |
6657 | continue; | |
6658 | value = h->root.u.def.value; | |
6659 | } | |
6660 | else | |
4025353c AM |
6661 | /* Symbols referenced by TLS relocs must be of type |
6662 | STT_TLS. So no need for .opd local sym adjust. */ | |
6663 | value = sym->st_value; | |
951fd09b | 6664 | |
411e1bfb | 6665 | ok_tprel = FALSE; |
951fd09b AM |
6666 | is_local = FALSE; |
6667 | if (h == NULL | |
f5385ebf | 6668 | || !h->def_dynamic) |
411e1bfb | 6669 | { |
951fd09b | 6670 | is_local = TRUE; |
411e1bfb AM |
6671 | value += sym_sec->output_offset; |
6672 | value += sym_sec->output_section->vma; | |
e1918d23 | 6673 | value -= htab->elf.tls_sec->vma; |
411e1bfb AM |
6674 | ok_tprel = (value + TP_OFFSET + ((bfd_vma) 1 << 31) |
6675 | < (bfd_vma) 1 << 32); | |
6676 | } | |
6677 | ||
4ce794b7 | 6678 | r_type = ELF64_R_TYPE (rel->r_info); |
411e1bfb AM |
6679 | switch (r_type) |
6680 | { | |
6681 | case R_PPC64_GOT_TLSLD16: | |
6682 | case R_PPC64_GOT_TLSLD16_LO: | |
6683 | case R_PPC64_GOT_TLSLD16_HI: | |
6684 | case R_PPC64_GOT_TLSLD16_HA: | |
951fd09b AM |
6685 | /* These relocs should never be against a symbol |
6686 | defined in a shared lib. Leave them alone if | |
6687 | that turns out to be the case. */ | |
e717da7e | 6688 | ppc64_tlsld_got (ibfd)->refcount -= 1; |
951fd09b AM |
6689 | if (!is_local) |
6690 | continue; | |
6691 | ||
951fd09b AM |
6692 | /* LD -> LE */ |
6693 | tls_set = 0; | |
6694 | tls_clear = TLS_LD; | |
e7b938ca | 6695 | tls_type = TLS_TLS | TLS_LD; |
411e1bfb AM |
6696 | expecting_tls_get_addr = 1; |
6697 | break; | |
6698 | ||
6699 | case R_PPC64_GOT_TLSGD16: | |
6700 | case R_PPC64_GOT_TLSGD16_LO: | |
6701 | case R_PPC64_GOT_TLSGD16_HI: | |
6702 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b | 6703 | if (ok_tprel) |
411e1bfb AM |
6704 | /* GD -> LE */ |
6705 | tls_set = 0; | |
6706 | else | |
6707 | /* GD -> IE */ | |
951fd09b AM |
6708 | tls_set = TLS_TLS | TLS_TPRELGD; |
6709 | tls_clear = TLS_GD; | |
e7b938ca | 6710 | tls_type = TLS_TLS | TLS_GD; |
411e1bfb AM |
6711 | expecting_tls_get_addr = 1; |
6712 | break; | |
6713 | ||
6714 | case R_PPC64_GOT_TPREL16_DS: | |
6715 | case R_PPC64_GOT_TPREL16_LO_DS: | |
6716 | case R_PPC64_GOT_TPREL16_HI: | |
6717 | case R_PPC64_GOT_TPREL16_HA: | |
6718 | expecting_tls_get_addr = 0; | |
6719 | if (ok_tprel) | |
6720 | { | |
6721 | /* IE -> LE */ | |
6722 | tls_set = 0; | |
6723 | tls_clear = TLS_TPREL; | |
e7b938ca | 6724 | tls_type = TLS_TLS | TLS_TPREL; |
411e1bfb AM |
6725 | break; |
6726 | } | |
6727 | else | |
6728 | continue; | |
6729 | ||
6730 | case R_PPC64_REL14: | |
6731 | case R_PPC64_REL14_BRTAKEN: | |
6732 | case R_PPC64_REL14_BRNTAKEN: | |
6733 | case R_PPC64_REL24: | |
6734 | if (h != NULL | |
8387904d AM |
6735 | && (h == &htab->tls_get_addr->elf |
6736 | || h == &htab->tls_get_addr_fd->elf)) | |
411e1bfb AM |
6737 | { |
6738 | if (!expecting_tls_get_addr | |
6739 | && rel != relstart | |
6740 | && ((ELF64_R_TYPE (rel[-1].r_info) | |
6741 | == R_PPC64_TOC16) | |
6742 | || (ELF64_R_TYPE (rel[-1].r_info) | |
6743 | == R_PPC64_TOC16_LO))) | |
6744 | { | |
6745 | /* Check for toc tls entries. */ | |
6746 | char *toc_tls; | |
951fd09b | 6747 | int retval; |
411e1bfb | 6748 | |
0d4792f7 | 6749 | retval = get_tls_mask (&toc_tls, NULL, &locsyms, |
951fd09b AM |
6750 | rel - 1, ibfd); |
6751 | if (retval == 0) | |
411e1bfb AM |
6752 | goto err_free_rel; |
6753 | if (toc_tls != NULL) | |
951fd09b | 6754 | expecting_tls_get_addr = retval > 1; |
411e1bfb AM |
6755 | } |
6756 | ||
6757 | if (expecting_tls_get_addr) | |
6758 | { | |
6759 | struct plt_entry *ent; | |
6760 | for (ent = h->plt.plist; ent; ent = ent->next) | |
6761 | if (ent->addend == 0) | |
6762 | { | |
6763 | if (ent->plt.refcount > 0) | |
6764 | ent->plt.refcount -= 1; | |
6765 | break; | |
6766 | } | |
6767 | } | |
6768 | } | |
6769 | expecting_tls_get_addr = 0; | |
6770 | continue; | |
6771 | ||
6772 | case R_PPC64_TPREL64: | |
6773 | expecting_tls_get_addr = 0; | |
6774 | if (ok_tprel) | |
6775 | { | |
6776 | /* IE -> LE */ | |
6777 | tls_set = TLS_EXPLICIT; | |
6778 | tls_clear = TLS_TPREL; | |
6779 | break; | |
6780 | } | |
6781 | else | |
6782 | continue; | |
6783 | ||
6784 | case R_PPC64_DTPMOD64: | |
6785 | expecting_tls_get_addr = 0; | |
951fd09b AM |
6786 | if (rel + 1 < relend |
6787 | && (rel[1].r_info | |
6788 | == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)) | |
6789 | && rel[1].r_offset == rel->r_offset + 8) | |
411e1bfb | 6790 | { |
951fd09b | 6791 | if (ok_tprel) |
411e1bfb | 6792 | /* GD -> LE */ |
951fd09b | 6793 | tls_set = TLS_EXPLICIT | TLS_GD; |
411e1bfb AM |
6794 | else |
6795 | /* GD -> IE */ | |
951fd09b AM |
6796 | tls_set = TLS_EXPLICIT | TLS_GD | TLS_TPRELGD; |
6797 | tls_clear = TLS_GD; | |
411e1bfb AM |
6798 | } |
6799 | else | |
6800 | { | |
951fd09b AM |
6801 | if (!is_local) |
6802 | continue; | |
6803 | ||
6804 | /* LD -> LE */ | |
6805 | tls_set = TLS_EXPLICIT; | |
6806 | tls_clear = TLS_LD; | |
411e1bfb AM |
6807 | } |
6808 | break; | |
6809 | ||
6810 | default: | |
6811 | expecting_tls_get_addr = 0; | |
6812 | continue; | |
6813 | } | |
6814 | ||
6815 | if ((tls_set & TLS_EXPLICIT) == 0) | |
6816 | { | |
6817 | struct got_entry *ent; | |
6818 | ||
6819 | /* Adjust got entry for this reloc. */ | |
6820 | if (h != NULL) | |
6821 | ent = h->got.glist; | |
6822 | else | |
6823 | ent = elf_local_got_ents (ibfd)[r_symndx]; | |
6824 | ||
6825 | for (; ent != NULL; ent = ent->next) | |
6826 | if (ent->addend == rel->r_addend | |
e717da7e | 6827 | && ent->owner == ibfd |
e7b938ca | 6828 | && ent->tls_type == tls_type) |
411e1bfb AM |
6829 | break; |
6830 | if (ent == NULL) | |
6831 | abort (); | |
6832 | ||
6833 | if (tls_set == 0) | |
6834 | { | |
6835 | /* We managed to get rid of a got entry. */ | |
6836 | if (ent->got.refcount > 0) | |
6837 | ent->got.refcount -= 1; | |
6838 | } | |
411e1bfb | 6839 | } |
8c1d1bb8 | 6840 | else |
411e1bfb | 6841 | { |
8c1d1bb8 AM |
6842 | /* If we got rid of a DTPMOD/DTPREL reloc pair then |
6843 | we'll lose one or two dyn relocs. */ | |
6844 | if (!dec_dynrel_count (rel->r_info, sec, info, | |
6845 | NULL, h, sym_sec)) | |
6846 | return FALSE; | |
6847 | ||
6848 | if (tls_set == (TLS_EXPLICIT | TLS_GD)) | |
6849 | { | |
6850 | if (!dec_dynrel_count ((rel + 1)->r_info, sec, info, | |
6851 | NULL, h, sym_sec)) | |
6852 | return FALSE; | |
6853 | } | |
411e1bfb AM |
6854 | } |
6855 | ||
e7b938ca AM |
6856 | *tls_mask |= tls_set; |
6857 | *tls_mask &= ~tls_clear; | |
411e1bfb AM |
6858 | } |
6859 | ||
6860 | if (elf_section_data (sec)->relocs != relstart) | |
6861 | free (relstart); | |
6862 | } | |
6863 | ||
6864 | if (locsyms != NULL | |
6865 | && (elf_tdata (ibfd)->symtab_hdr.contents | |
6866 | != (unsigned char *) locsyms)) | |
6cdc0ccc AM |
6867 | { |
6868 | if (!info->keep_memory) | |
411e1bfb | 6869 | free (locsyms); |
6cdc0ccc | 6870 | else |
411e1bfb | 6871 | elf_tdata (ibfd)->symtab_hdr.contents = (unsigned char *) locsyms; |
6cdc0ccc | 6872 | } |
1e2f5b6e | 6873 | } |
b34976b6 | 6874 | return TRUE; |
1e2f5b6e | 6875 | } |
b34976b6 | 6876 | |
c5614fa4 AM |
6877 | /* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust |
6878 | the values of any global symbols in a toc section that has been | |
6879 | edited. Globals in toc sections should be a rarity, so this function | |
6880 | sets a flag if any are found in toc sections other than the one just | |
6881 | edited, so that futher hash table traversals can be avoided. */ | |
6882 | ||
6883 | struct adjust_toc_info | |
6884 | { | |
6885 | asection *toc; | |
6886 | unsigned long *skip; | |
6887 | bfd_boolean global_toc_syms; | |
6888 | }; | |
6889 | ||
6890 | static bfd_boolean | |
6891 | adjust_toc_syms (struct elf_link_hash_entry *h, void *inf) | |
6892 | { | |
6893 | struct ppc_link_hash_entry *eh; | |
6894 | struct adjust_toc_info *toc_inf = (struct adjust_toc_info *) inf; | |
6895 | ||
6896 | if (h->root.type == bfd_link_hash_indirect) | |
6897 | return TRUE; | |
6898 | ||
6899 | if (h->root.type == bfd_link_hash_warning) | |
6900 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
6901 | ||
6902 | if (h->root.type != bfd_link_hash_defined | |
6903 | && h->root.type != bfd_link_hash_defweak) | |
6904 | return TRUE; | |
6905 | ||
6906 | eh = (struct ppc_link_hash_entry *) h; | |
6907 | if (eh->adjust_done) | |
6908 | return TRUE; | |
6909 | ||
6910 | if (eh->elf.root.u.def.section == toc_inf->toc) | |
6911 | { | |
6912 | unsigned long skip = toc_inf->skip[eh->elf.root.u.def.value >> 3]; | |
6913 | if (skip != (unsigned long) -1) | |
6914 | eh->elf.root.u.def.value -= skip; | |
6915 | else | |
6916 | { | |
6917 | (*_bfd_error_handler) | |
6918 | (_("%s defined in removed toc entry"), eh->elf.root.root.string); | |
6919 | eh->elf.root.u.def.section = &bfd_abs_section; | |
6920 | eh->elf.root.u.def.value = 0; | |
6921 | } | |
6922 | eh->adjust_done = 1; | |
6923 | } | |
6924 | else if (strcmp (eh->elf.root.u.def.section->name, ".toc") == 0) | |
6925 | toc_inf->global_toc_syms = TRUE; | |
6926 | ||
6927 | return TRUE; | |
6928 | } | |
6929 | ||
6930 | /* Examine all relocs referencing .toc sections in order to remove | |
6931 | unused .toc entries. */ | |
6932 | ||
6933 | bfd_boolean | |
6934 | ppc64_elf_edit_toc (bfd *obfd ATTRIBUTE_UNUSED, struct bfd_link_info *info) | |
6935 | { | |
6936 | bfd *ibfd; | |
6937 | struct adjust_toc_info toc_inf; | |
6938 | ||
6939 | toc_inf.global_toc_syms = TRUE; | |
6940 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
6941 | { | |
6942 | asection *toc, *sec; | |
6943 | Elf_Internal_Shdr *symtab_hdr; | |
6944 | Elf_Internal_Sym *local_syms; | |
6945 | struct elf_link_hash_entry **sym_hashes; | |
92b7a70f | 6946 | Elf_Internal_Rela *relstart, *rel; |
c5614fa4 AM |
6947 | unsigned long *skip, *drop; |
6948 | unsigned char *used; | |
6949 | unsigned char *keep, last, some_unused; | |
6950 | ||
6951 | toc = bfd_get_section_by_name (ibfd, ".toc"); | |
6952 | if (toc == NULL | |
92b7a70f | 6953 | || toc->size == 0 |
c5614fa4 AM |
6954 | || toc->sec_info_type == ELF_INFO_TYPE_JUST_SYMS |
6955 | || elf_discarded_section (toc)) | |
6956 | continue; | |
6957 | ||
6958 | local_syms = NULL; | |
6959 | symtab_hdr = &elf_tdata (ibfd)->symtab_hdr; | |
6960 | sym_hashes = elf_sym_hashes (ibfd); | |
6961 | ||
6962 | /* Look at sections dropped from the final link. */ | |
6963 | skip = NULL; | |
6964 | relstart = NULL; | |
6965 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
6966 | { | |
6967 | if (sec->reloc_count == 0 | |
6968 | || !elf_discarded_section (sec) | |
6969 | || get_opd_info (sec) | |
6970 | || (sec->flags & SEC_ALLOC) == 0 | |
6971 | || (sec->flags & SEC_DEBUGGING) != 0) | |
6972 | continue; | |
6973 | ||
6974 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, FALSE); | |
6975 | if (relstart == NULL) | |
6976 | goto error_ret; | |
6977 | ||
6978 | /* Run through the relocs to see which toc entries might be | |
6979 | unused. */ | |
6980 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
6981 | { | |
6982 | enum elf_ppc64_reloc_type r_type; | |
6983 | unsigned long r_symndx; | |
6984 | asection *sym_sec; | |
6985 | struct elf_link_hash_entry *h; | |
6986 | Elf_Internal_Sym *sym; | |
6987 | bfd_vma val; | |
6988 | ||
6989 | r_type = ELF64_R_TYPE (rel->r_info); | |
6990 | switch (r_type) | |
6991 | { | |
6992 | default: | |
6993 | continue; | |
6994 | ||
6995 | case R_PPC64_TOC16: | |
6996 | case R_PPC64_TOC16_LO: | |
6997 | case R_PPC64_TOC16_HI: | |
6998 | case R_PPC64_TOC16_HA: | |
6999 | case R_PPC64_TOC16_DS: | |
7000 | case R_PPC64_TOC16_LO_DS: | |
7001 | break; | |
7002 | } | |
7003 | ||
7004 | r_symndx = ELF64_R_SYM (rel->r_info); | |
7005 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
7006 | r_symndx, ibfd)) | |
7007 | goto error_ret; | |
7008 | ||
7009 | if (sym_sec != toc) | |
7010 | continue; | |
7011 | ||
7012 | if (h != NULL) | |
7013 | val = h->root.u.def.value; | |
7014 | else | |
7015 | val = sym->st_value; | |
7016 | val += rel->r_addend; | |
7017 | ||
7018 | if (val >= toc->size) | |
7019 | continue; | |
7020 | ||
7021 | /* Anything in the toc ought to be aligned to 8 bytes. | |
7022 | If not, don't mark as unused. */ | |
7023 | if (val & 7) | |
7024 | continue; | |
7025 | ||
7026 | if (skip == NULL) | |
7027 | { | |
7028 | skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 7) / 8); | |
7029 | if (skip == NULL) | |
7030 | goto error_ret; | |
7031 | } | |
7032 | ||
7033 | skip[val >> 3] = 1; | |
7034 | } | |
7035 | ||
7036 | if (elf_section_data (sec)->relocs != relstart) | |
7037 | free (relstart); | |
7038 | } | |
7039 | ||
7040 | if (skip == NULL) | |
7041 | continue; | |
7042 | ||
7043 | used = bfd_zmalloc (sizeof (*used) * (toc->size + 7) / 8); | |
7044 | if (used == NULL) | |
7045 | { | |
7046 | error_ret: | |
7047 | if (local_syms != NULL | |
7048 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
7049 | free (local_syms); | |
7050 | if (sec != NULL | |
7051 | && relstart != NULL | |
7052 | && elf_section_data (sec)->relocs != relstart) | |
7053 | free (relstart); | |
7054 | if (skip != NULL) | |
7055 | free (skip); | |
7056 | return FALSE; | |
7057 | } | |
7058 | ||
7059 | /* Now check all kept sections that might reference the toc. */ | |
7060 | for (sec = ibfd->sections; | |
7061 | sec != NULL; | |
7062 | /* Check the toc itself last. */ | |
7063 | sec = (sec == toc ? NULL | |
7064 | : sec->next == toc && sec->next->next ? sec->next->next | |
7065 | : sec->next == NULL ? toc | |
7066 | : sec->next)) | |
7067 | { | |
7068 | int repeat; | |
7069 | ||
7070 | if (sec->reloc_count == 0 | |
7071 | || elf_discarded_section (sec) | |
7072 | || get_opd_info (sec) | |
7073 | || (sec->flags & SEC_ALLOC) == 0 | |
7074 | || (sec->flags & SEC_DEBUGGING) != 0) | |
7075 | continue; | |
7076 | ||
7077 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, TRUE); | |
7078 | if (relstart == NULL) | |
7079 | goto error_ret; | |
7080 | ||
7081 | /* Mark toc entries referenced as used. */ | |
7082 | repeat = 0; | |
7083 | do | |
7084 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
7085 | { | |
7086 | enum elf_ppc64_reloc_type r_type; | |
7087 | unsigned long r_symndx; | |
7088 | asection *sym_sec; | |
7089 | struct elf_link_hash_entry *h; | |
7090 | Elf_Internal_Sym *sym; | |
7091 | bfd_vma val; | |
7092 | ||
7093 | r_type = ELF64_R_TYPE (rel->r_info); | |
7094 | switch (r_type) | |
7095 | { | |
7096 | case R_PPC64_TOC16: | |
7097 | case R_PPC64_TOC16_LO: | |
7098 | case R_PPC64_TOC16_HI: | |
7099 | case R_PPC64_TOC16_HA: | |
7100 | case R_PPC64_TOC16_DS: | |
7101 | case R_PPC64_TOC16_LO_DS: | |
7102 | /* In case we're taking addresses of toc entries. */ | |
7103 | case R_PPC64_ADDR64: | |
7104 | break; | |
7105 | ||
7106 | default: | |
7107 | continue; | |
7108 | } | |
7109 | ||
7110 | r_symndx = ELF64_R_SYM (rel->r_info); | |
7111 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
7112 | r_symndx, ibfd)) | |
7113 | { | |
7114 | free (used); | |
7115 | goto error_ret; | |
7116 | } | |
7117 | ||
7118 | if (sym_sec != toc) | |
7119 | continue; | |
7120 | ||
7121 | if (h != NULL) | |
7122 | val = h->root.u.def.value; | |
7123 | else | |
7124 | val = sym->st_value; | |
7125 | val += rel->r_addend; | |
7126 | ||
7127 | if (val >= toc->size) | |
7128 | continue; | |
7129 | ||
7130 | /* For the toc section, we only mark as used if | |
7131 | this entry itself isn't unused. */ | |
7132 | if (sec == toc | |
7133 | && !used[val >> 3] | |
7134 | && (used[rel->r_offset >> 3] | |
7135 | || !skip[rel->r_offset >> 3])) | |
7136 | /* Do all the relocs again, to catch reference | |
7137 | chains. */ | |
7138 | repeat = 1; | |
7139 | ||
7140 | used[val >> 3] = 1; | |
7141 | } | |
7142 | while (repeat); | |
7143 | } | |
7144 | ||
7145 | /* Merge the used and skip arrays. Assume that TOC | |
7146 | doublewords not appearing as either used or unused belong | |
7147 | to to an entry more than one doubleword in size. */ | |
7148 | for (drop = skip, keep = used, last = 0, some_unused = 0; | |
7149 | drop < skip + (toc->size + 7) / 8; | |
7150 | ++drop, ++keep) | |
7151 | { | |
7152 | if (*keep) | |
7153 | { | |
7154 | *drop = 0; | |
7155 | last = 0; | |
7156 | } | |
7157 | else if (*drop) | |
7158 | { | |
7159 | some_unused = 1; | |
7160 | last = 1; | |
7161 | } | |
7162 | else | |
7163 | *drop = last; | |
7164 | } | |
7165 | ||
7166 | free (used); | |
7167 | ||
7168 | if (some_unused) | |
7169 | { | |
7170 | bfd_byte *contents, *src; | |
7171 | unsigned long off; | |
7172 | ||
7173 | /* Shuffle the toc contents, and at the same time convert the | |
7174 | skip array from booleans into offsets. */ | |
7175 | if (!bfd_malloc_and_get_section (ibfd, toc, &contents)) | |
7176 | goto error_ret; | |
7177 | ||
7178 | elf_section_data (toc)->this_hdr.contents = contents; | |
7179 | ||
7180 | for (src = contents, off = 0, drop = skip; | |
7181 | src < contents + toc->size; | |
7182 | src += 8, ++drop) | |
7183 | { | |
7184 | if (*drop) | |
7185 | { | |
7186 | *drop = (unsigned long) -1; | |
7187 | off += 8; | |
7188 | } | |
7189 | else if (off != 0) | |
7190 | { | |
7191 | *drop = off; | |
7192 | memcpy (src - off, src, 8); | |
7193 | } | |
7194 | } | |
7195 | toc->rawsize = toc->size; | |
7196 | toc->size = src - contents - off; | |
7197 | ||
92b7a70f AM |
7198 | if (toc->reloc_count != 0) |
7199 | { | |
7200 | Elf_Internal_Rela *wrel; | |
7201 | bfd_size_type sz; | |
c5614fa4 | 7202 | |
92b7a70f AM |
7203 | /* Read toc relocs. */ |
7204 | relstart = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL, | |
7205 | TRUE); | |
7206 | if (relstart == NULL) | |
7207 | goto error_ret; | |
7208 | ||
7209 | /* Remove unused toc relocs, and adjust those we keep. */ | |
7210 | wrel = relstart; | |
7211 | for (rel = relstart; rel < relstart + toc->reloc_count; ++rel) | |
7212 | if (skip[rel->r_offset >> 3] != (unsigned long) -1) | |
7213 | { | |
7214 | wrel->r_offset = rel->r_offset - skip[rel->r_offset >> 3]; | |
7215 | wrel->r_info = rel->r_info; | |
7216 | wrel->r_addend = rel->r_addend; | |
7217 | ++wrel; | |
7218 | } | |
8c1d1bb8 AM |
7219 | else if (!dec_dynrel_count (rel->r_info, toc, info, |
7220 | &local_syms, NULL, NULL)) | |
7221 | goto error_ret; | |
35090471 | 7222 | |
92b7a70f AM |
7223 | toc->reloc_count = wrel - relstart; |
7224 | sz = elf_section_data (toc)->rel_hdr.sh_entsize; | |
7225 | elf_section_data (toc)->rel_hdr.sh_size = toc->reloc_count * sz; | |
7226 | BFD_ASSERT (elf_section_data (toc)->rel_hdr2 == NULL); | |
7227 | } | |
c5614fa4 AM |
7228 | |
7229 | /* Adjust addends for relocs against the toc section sym. */ | |
7230 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
7231 | { | |
7232 | if (sec->reloc_count == 0 | |
7233 | || elf_discarded_section (sec)) | |
7234 | continue; | |
7235 | ||
7236 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, | |
7237 | TRUE); | |
7238 | if (relstart == NULL) | |
7239 | goto error_ret; | |
7240 | ||
7241 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
7242 | { | |
7243 | enum elf_ppc64_reloc_type r_type; | |
7244 | unsigned long r_symndx; | |
7245 | asection *sym_sec; | |
7246 | struct elf_link_hash_entry *h; | |
7247 | Elf_Internal_Sym *sym; | |
7248 | ||
7249 | r_type = ELF64_R_TYPE (rel->r_info); | |
7250 | switch (r_type) | |
7251 | { | |
7252 | default: | |
7253 | continue; | |
7254 | ||
7255 | case R_PPC64_TOC16: | |
7256 | case R_PPC64_TOC16_LO: | |
7257 | case R_PPC64_TOC16_HI: | |
7258 | case R_PPC64_TOC16_HA: | |
7259 | case R_PPC64_TOC16_DS: | |
7260 | case R_PPC64_TOC16_LO_DS: | |
7261 | case R_PPC64_ADDR64: | |
7262 | break; | |
7263 | } | |
7264 | ||
7265 | r_symndx = ELF64_R_SYM (rel->r_info); | |
7266 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
7267 | r_symndx, ibfd)) | |
7268 | goto error_ret; | |
7269 | ||
7270 | if (sym_sec != toc || h != NULL || sym->st_value != 0) | |
7271 | continue; | |
7272 | ||
7273 | rel->r_addend -= skip[rel->r_addend >> 3]; | |
7274 | } | |
7275 | } | |
7276 | ||
7277 | /* We shouldn't have local or global symbols defined in the TOC, | |
7278 | but handle them anyway. */ | |
7279 | if (local_syms != NULL) | |
7280 | { | |
7281 | Elf_Internal_Sym *sym; | |
7282 | ||
7283 | for (sym = local_syms; | |
7284 | sym < local_syms + symtab_hdr->sh_info; | |
7285 | ++sym) | |
7286 | if (sym->st_shndx != SHN_UNDEF | |
7287 | && (sym->st_shndx < SHN_LORESERVE | |
7288 | || sym->st_shndx > SHN_HIRESERVE) | |
7289 | && sym->st_value != 0 | |
7290 | && bfd_section_from_elf_index (ibfd, sym->st_shndx) == toc) | |
7291 | { | |
7292 | if (skip[sym->st_value >> 3] != (unsigned long) -1) | |
7293 | sym->st_value -= skip[sym->st_value >> 3]; | |
7294 | else | |
7295 | { | |
7296 | (*_bfd_error_handler) | |
7297 | (_("%s defined in removed toc entry"), | |
26c61ae5 L |
7298 | bfd_elf_sym_name (ibfd, symtab_hdr, sym, |
7299 | NULL)); | |
c5614fa4 AM |
7300 | sym->st_value = 0; |
7301 | sym->st_shndx = SHN_ABS; | |
7302 | } | |
7303 | symtab_hdr->contents = (unsigned char *) local_syms; | |
7304 | } | |
7305 | } | |
7306 | ||
7307 | /* Finally, adjust any global syms defined in the toc. */ | |
7308 | if (toc_inf.global_toc_syms) | |
7309 | { | |
7310 | toc_inf.toc = toc; | |
7311 | toc_inf.skip = skip; | |
7312 | toc_inf.global_toc_syms = FALSE; | |
7313 | elf_link_hash_traverse (elf_hash_table (info), adjust_toc_syms, | |
7314 | &toc_inf); | |
7315 | } | |
7316 | } | |
7317 | ||
7318 | if (local_syms != NULL | |
7319 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
7320 | { | |
7321 | if (!info->keep_memory) | |
7322 | free (local_syms); | |
7323 | else | |
7324 | symtab_hdr->contents = (unsigned char *) local_syms; | |
7325 | } | |
7326 | free (skip); | |
7327 | } | |
7328 | ||
7329 | return TRUE; | |
7330 | } | |
7331 | ||
65f38f15 AM |
7332 | /* Allocate space in .plt, .got and associated reloc sections for |
7333 | dynamic relocs. */ | |
5bd4f169 | 7334 | |
b34976b6 | 7335 | static bfd_boolean |
4ce794b7 | 7336 | allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf) |
5bd4f169 | 7337 | { |
65f38f15 AM |
7338 | struct bfd_link_info *info; |
7339 | struct ppc_link_hash_table *htab; | |
5bd4f169 | 7340 | asection *s; |
65f38f15 AM |
7341 | struct ppc_link_hash_entry *eh; |
7342 | struct ppc_dyn_relocs *p; | |
411e1bfb | 7343 | struct got_entry *gent; |
5bd4f169 | 7344 | |
e92d460e | 7345 | if (h->root.type == bfd_link_hash_indirect) |
b34976b6 | 7346 | return TRUE; |
5bd4f169 | 7347 | |
e92d460e AM |
7348 | if (h->root.type == bfd_link_hash_warning) |
7349 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
7350 | ||
65f38f15 AM |
7351 | info = (struct bfd_link_info *) inf; |
7352 | htab = ppc_hash_table (info); | |
5bd4f169 | 7353 | |
65f38f15 | 7354 | if (htab->elf.dynamic_sections_created |
411e1bfb | 7355 | && h->dynindx != -1 |
9c7a29a3 | 7356 | && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h)) |
5bd4f169 | 7357 | { |
411e1bfb AM |
7358 | struct plt_entry *pent; |
7359 | bfd_boolean doneone = FALSE; | |
7360 | for (pent = h->plt.plist; pent != NULL; pent = pent->next) | |
7361 | if (pent->plt.refcount > 0) | |
7362 | { | |
411e1bfb AM |
7363 | /* If this is the first .plt entry, make room for the special |
7364 | first entry. */ | |
4ce794b7 | 7365 | s = htab->plt; |
eea6121a AM |
7366 | if (s->size == 0) |
7367 | s->size += PLT_INITIAL_ENTRY_SIZE; | |
411e1bfb | 7368 | |
eea6121a | 7369 | pent->plt.offset = s->size; |
411e1bfb AM |
7370 | |
7371 | /* Make room for this entry. */ | |
eea6121a | 7372 | s->size += PLT_ENTRY_SIZE; |
411e1bfb AM |
7373 | |
7374 | /* Make room for the .glink code. */ | |
4ce794b7 | 7375 | s = htab->glink; |
eea6121a AM |
7376 | if (s->size == 0) |
7377 | s->size += GLINK_CALL_STUB_SIZE; | |
411e1bfb | 7378 | /* We need bigger stubs past index 32767. */ |
eea6121a AM |
7379 | if (s->size >= GLINK_CALL_STUB_SIZE + 32768*2*4) |
7380 | s->size += 4; | |
7381 | s->size += 2*4; | |
411e1bfb AM |
7382 | |
7383 | /* We also need to make an entry in the .rela.plt section. */ | |
4ce794b7 | 7384 | s = htab->relplt; |
eea6121a | 7385 | s->size += sizeof (Elf64_External_Rela); |
411e1bfb AM |
7386 | doneone = TRUE; |
7387 | } | |
7388 | else | |
7389 | pent->plt.offset = (bfd_vma) -1; | |
7390 | if (!doneone) | |
65f38f15 | 7391 | { |
411e1bfb | 7392 | h->plt.plist = NULL; |
f5385ebf | 7393 | h->needs_plt = 0; |
65f38f15 AM |
7394 | } |
7395 | } | |
7396 | else | |
7397 | { | |
411e1bfb | 7398 | h->plt.plist = NULL; |
f5385ebf | 7399 | h->needs_plt = 0; |
65f38f15 AM |
7400 | } |
7401 | ||
951fd09b AM |
7402 | eh = (struct ppc_link_hash_entry *) h; |
7403 | /* Run through the TLS GD got entries first if we're changing them | |
7404 | to TPREL. */ | |
e7b938ca | 7405 | if ((eh->tls_mask & TLS_TPRELGD) != 0) |
951fd09b AM |
7406 | for (gent = h->got.glist; gent != NULL; gent = gent->next) |
7407 | if (gent->got.refcount > 0 | |
7408 | && (gent->tls_type & TLS_GD) != 0) | |
7409 | { | |
7410 | /* This was a GD entry that has been converted to TPREL. If | |
7411 | there happens to be a TPREL entry we can use that one. */ | |
7412 | struct got_entry *ent; | |
7413 | for (ent = h->got.glist; ent != NULL; ent = ent->next) | |
7414 | if (ent->got.refcount > 0 | |
7415 | && (ent->tls_type & TLS_TPREL) != 0 | |
e717da7e AM |
7416 | && ent->addend == gent->addend |
7417 | && ent->owner == gent->owner) | |
951fd09b AM |
7418 | { |
7419 | gent->got.refcount = 0; | |
7420 | break; | |
7421 | } | |
7422 | ||
7423 | /* If not, then we'll be using our own TPREL entry. */ | |
7424 | if (gent->got.refcount != 0) | |
7425 | gent->tls_type = TLS_TLS | TLS_TPREL; | |
7426 | } | |
7427 | ||
411e1bfb AM |
7428 | for (gent = h->got.glist; gent != NULL; gent = gent->next) |
7429 | if (gent->got.refcount > 0) | |
7430 | { | |
951fd09b AM |
7431 | bfd_boolean dyn; |
7432 | ||
411e1bfb | 7433 | /* Make sure this symbol is output as a dynamic symbol. |
951fd09b AM |
7434 | Undefined weak syms won't yet be marked as dynamic, |
7435 | nor will all TLS symbols. */ | |
411e1bfb | 7436 | if (h->dynindx == -1 |
f5385ebf | 7437 | && !h->forced_local) |
411e1bfb | 7438 | { |
c152c796 | 7439 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
411e1bfb AM |
7440 | return FALSE; |
7441 | } | |
65f38f15 | 7442 | |
d881513a | 7443 | if ((gent->tls_type & TLS_LD) != 0 |
f5385ebf | 7444 | && !h->def_dynamic) |
411e1bfb | 7445 | { |
e717da7e | 7446 | gent->got.offset = ppc64_tlsld_got (gent->owner)->offset; |
951fd09b | 7447 | continue; |
411e1bfb | 7448 | } |
951fd09b | 7449 | |
e717da7e | 7450 | s = ppc64_elf_tdata (gent->owner)->got; |
eea6121a AM |
7451 | gent->got.offset = s->size; |
7452 | s->size | |
d881513a | 7453 | += (gent->tls_type & eh->tls_mask & (TLS_GD | TLS_LD)) ? 16 : 8; |
951fd09b | 7454 | dyn = htab->elf.dynamic_sections_created; |
4e795f50 AM |
7455 | if ((info->shared |
7456 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)) | |
7457 | && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
7458 | || h->root.type != bfd_link_hash_undefweak)) | |
eea6121a | 7459 | ppc64_elf_tdata (gent->owner)->relgot->size |
e7b938ca | 7460 | += (gent->tls_type & eh->tls_mask & TLS_GD |
951fd09b AM |
7461 | ? 2 * sizeof (Elf64_External_Rela) |
7462 | : sizeof (Elf64_External_Rela)); | |
411e1bfb AM |
7463 | } |
7464 | else | |
7465 | gent->got.offset = (bfd_vma) -1; | |
65f38f15 | 7466 | |
65f38f15 | 7467 | if (eh->dyn_relocs == NULL) |
b34976b6 | 7468 | return TRUE; |
65f38f15 AM |
7469 | |
7470 | /* In the shared -Bsymbolic case, discard space allocated for | |
7471 | dynamic pc-relative relocs against symbols which turn out to be | |
7472 | defined in regular objects. For the normal shared case, discard | |
7473 | space for relocs that have become local due to symbol visibility | |
7474 | changes. */ | |
7475 | ||
7476 | if (info->shared) | |
7477 | { | |
9c7a29a3 AM |
7478 | /* Relocs that use pc_count are those that appear on a call insn, |
7479 | or certain REL relocs (see MUST_BE_DYN_RELOC) that can be | |
7480 | generated via assembly. We want calls to protected symbols to | |
7481 | resolve directly to the function rather than going via the plt. | |
7482 | If people want function pointer comparisons to work as expected | |
7483 | then they should avoid writing weird assembly. */ | |
09695f56 | 7484 | if (SYMBOL_CALLS_LOCAL (info, h)) |
65f38f15 AM |
7485 | { |
7486 | struct ppc_dyn_relocs **pp; | |
7487 | ||
7488 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) | |
5bd4f169 | 7489 | { |
65f38f15 AM |
7490 | p->count -= p->pc_count; |
7491 | p->pc_count = 0; | |
7492 | if (p->count == 0) | |
7493 | *pp = p->next; | |
7494 | else | |
7495 | pp = &p->next; | |
5bd4f169 | 7496 | } |
65f38f15 | 7497 | } |
4e795f50 AM |
7498 | |
7499 | /* Also discard relocs on undefined weak syms with non-default | |
7500 | visibility. */ | |
7501 | if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
7502 | && h->root.type == bfd_link_hash_undefweak) | |
7503 | eh->dyn_relocs = NULL; | |
65f38f15 | 7504 | } |
f4656909 | 7505 | else if (ELIMINATE_COPY_RELOCS) |
65f38f15 AM |
7506 | { |
7507 | /* For the non-shared case, discard space for relocs against | |
7508 | symbols which turn out to need copy relocs or are not | |
7509 | dynamic. */ | |
7510 | ||
f5385ebf AM |
7511 | if (!h->non_got_ref |
7512 | && h->def_dynamic | |
7513 | && !h->def_regular) | |
65f38f15 AM |
7514 | { |
7515 | /* Make sure this symbol is output as a dynamic symbol. | |
7516 | Undefined weak syms won't yet be marked as dynamic. */ | |
7517 | if (h->dynindx == -1 | |
f5385ebf | 7518 | && !h->forced_local) |
65f38f15 | 7519 | { |
c152c796 | 7520 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 7521 | return FALSE; |
65f38f15 AM |
7522 | } |
7523 | ||
7524 | /* If that succeeded, we know we'll be keeping all the | |
7525 | relocs. */ | |
7526 | if (h->dynindx != -1) | |
7527 | goto keep; | |
7528 | } | |
7529 | ||
7530 | eh->dyn_relocs = NULL; | |
7531 | ||
ec338859 | 7532 | keep: ; |
65f38f15 AM |
7533 | } |
7534 | ||
7535 | /* Finally, allocate space. */ | |
7536 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
7537 | { | |
7538 | asection *sreloc = elf_section_data (p->sec)->sreloc; | |
eea6121a | 7539 | sreloc->size += p->count * sizeof (Elf64_External_Rela); |
65f38f15 AM |
7540 | } |
7541 | ||
b34976b6 | 7542 | return TRUE; |
65f38f15 AM |
7543 | } |
7544 | ||
7545 | /* Find any dynamic relocs that apply to read-only sections. */ | |
7546 | ||
b34976b6 | 7547 | static bfd_boolean |
4ce794b7 | 7548 | readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf) |
65f38f15 AM |
7549 | { |
7550 | struct ppc_link_hash_entry *eh; | |
7551 | struct ppc_dyn_relocs *p; | |
7552 | ||
e92d460e AM |
7553 | if (h->root.type == bfd_link_hash_warning) |
7554 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
7555 | ||
65f38f15 AM |
7556 | eh = (struct ppc_link_hash_entry *) h; |
7557 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
7558 | { | |
7559 | asection *s = p->sec->output_section; | |
7560 | ||
7561 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
7562 | { | |
4ce794b7 | 7563 | struct bfd_link_info *info = inf; |
65f38f15 AM |
7564 | |
7565 | info->flags |= DF_TEXTREL; | |
7566 | ||
7567 | /* Not an error, just cut short the traversal. */ | |
b34976b6 | 7568 | return FALSE; |
65f38f15 AM |
7569 | } |
7570 | } | |
b34976b6 | 7571 | return TRUE; |
65f38f15 AM |
7572 | } |
7573 | ||
7574 | /* Set the sizes of the dynamic sections. */ | |
7575 | ||
b34976b6 | 7576 | static bfd_boolean |
4ce794b7 AM |
7577 | ppc64_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED, |
7578 | struct bfd_link_info *info) | |
65f38f15 AM |
7579 | { |
7580 | struct ppc_link_hash_table *htab; | |
7581 | bfd *dynobj; | |
7582 | asection *s; | |
b34976b6 | 7583 | bfd_boolean relocs; |
65f38f15 AM |
7584 | bfd *ibfd; |
7585 | ||
7586 | htab = ppc_hash_table (info); | |
7587 | dynobj = htab->elf.dynobj; | |
7588 | if (dynobj == NULL) | |
7589 | abort (); | |
7590 | ||
7591 | if (htab->elf.dynamic_sections_created) | |
7592 | { | |
7593 | /* Set the contents of the .interp section to the interpreter. */ | |
36af4a4e | 7594 | if (info->executable) |
65f38f15 AM |
7595 | { |
7596 | s = bfd_get_section_by_name (dynobj, ".interp"); | |
7597 | if (s == NULL) | |
7598 | abort (); | |
eea6121a | 7599 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; |
65f38f15 AM |
7600 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; |
7601 | } | |
7602 | } | |
7603 | ||
7604 | /* Set up .got offsets for local syms, and space for local dynamic | |
7605 | relocs. */ | |
7606 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
7607 | { | |
411e1bfb AM |
7608 | struct got_entry **lgot_ents; |
7609 | struct got_entry **end_lgot_ents; | |
e7b938ca | 7610 | char *lgot_masks; |
65f38f15 AM |
7611 | bfd_size_type locsymcount; |
7612 | Elf_Internal_Shdr *symtab_hdr; | |
7613 | asection *srel; | |
7614 | ||
ee75fd95 | 7615 | if (!is_ppc64_elf_target (ibfd->xvec)) |
65f38f15 AM |
7616 | continue; |
7617 | ||
e717da7e AM |
7618 | if (ppc64_tlsld_got (ibfd)->refcount > 0) |
7619 | { | |
7620 | s = ppc64_elf_tdata (ibfd)->got; | |
eea6121a AM |
7621 | ppc64_tlsld_got (ibfd)->offset = s->size; |
7622 | s->size += 16; | |
e717da7e AM |
7623 | if (info->shared) |
7624 | { | |
7625 | srel = ppc64_elf_tdata (ibfd)->relgot; | |
eea6121a | 7626 | srel->size += sizeof (Elf64_External_Rela); |
e717da7e AM |
7627 | } |
7628 | } | |
7629 | else | |
7630 | ppc64_tlsld_got (ibfd)->offset = (bfd_vma) -1; | |
7631 | ||
65f38f15 AM |
7632 | for (s = ibfd->sections; s != NULL; s = s->next) |
7633 | { | |
ec338859 | 7634 | struct ppc_dyn_relocs *p; |
65f38f15 | 7635 | |
ec338859 AM |
7636 | for (p = *((struct ppc_dyn_relocs **) |
7637 | &elf_section_data (s)->local_dynrel); | |
7638 | p != NULL; | |
7639 | p = p->next) | |
65f38f15 | 7640 | { |
ec338859 AM |
7641 | if (!bfd_is_abs_section (p->sec) |
7642 | && bfd_is_abs_section (p->sec->output_section)) | |
7643 | { | |
7644 | /* Input section has been discarded, either because | |
7645 | it is a copy of a linkonce section or due to | |
7646 | linker script /DISCARD/, so we'll be discarding | |
7647 | the relocs too. */ | |
7648 | } | |
248866a8 | 7649 | else if (p->count != 0) |
ec338859 AM |
7650 | { |
7651 | srel = elf_section_data (p->sec)->sreloc; | |
eea6121a | 7652 | srel->size += p->count * sizeof (Elf64_External_Rela); |
248866a8 AM |
7653 | if ((p->sec->output_section->flags & SEC_READONLY) != 0) |
7654 | info->flags |= DF_TEXTREL; | |
ec338859 | 7655 | } |
65f38f15 AM |
7656 | } |
7657 | } | |
7658 | ||
411e1bfb AM |
7659 | lgot_ents = elf_local_got_ents (ibfd); |
7660 | if (!lgot_ents) | |
65f38f15 AM |
7661 | continue; |
7662 | ||
7663 | symtab_hdr = &elf_tdata (ibfd)->symtab_hdr; | |
7664 | locsymcount = symtab_hdr->sh_info; | |
411e1bfb | 7665 | end_lgot_ents = lgot_ents + locsymcount; |
e7b938ca | 7666 | lgot_masks = (char *) end_lgot_ents; |
e717da7e AM |
7667 | s = ppc64_elf_tdata (ibfd)->got; |
7668 | srel = ppc64_elf_tdata (ibfd)->relgot; | |
e7b938ca | 7669 | for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks) |
65f38f15 | 7670 | { |
411e1bfb AM |
7671 | struct got_entry *ent; |
7672 | ||
7673 | for (ent = *lgot_ents; ent != NULL; ent = ent->next) | |
7674 | if (ent->got.refcount > 0) | |
7675 | { | |
e7b938ca | 7676 | if ((ent->tls_type & *lgot_masks & TLS_LD) != 0) |
411e1bfb | 7677 | { |
e717da7e | 7678 | if (ppc64_tlsld_got (ibfd)->offset == (bfd_vma) -1) |
411e1bfb | 7679 | { |
eea6121a AM |
7680 | ppc64_tlsld_got (ibfd)->offset = s->size; |
7681 | s->size += 16; | |
411e1bfb | 7682 | if (info->shared) |
eea6121a | 7683 | srel->size += sizeof (Elf64_External_Rela); |
411e1bfb | 7684 | } |
e717da7e | 7685 | ent->got.offset = ppc64_tlsld_got (ibfd)->offset; |
411e1bfb AM |
7686 | } |
7687 | else | |
7688 | { | |
eea6121a | 7689 | ent->got.offset = s->size; |
e7b938ca | 7690 | if ((ent->tls_type & *lgot_masks & TLS_GD) != 0) |
411e1bfb | 7691 | { |
eea6121a | 7692 | s->size += 16; |
411e1bfb | 7693 | if (info->shared) |
eea6121a | 7694 | srel->size += 2 * sizeof (Elf64_External_Rela); |
411e1bfb AM |
7695 | } |
7696 | else | |
7697 | { | |
eea6121a | 7698 | s->size += 8; |
411e1bfb | 7699 | if (info->shared) |
eea6121a | 7700 | srel->size += sizeof (Elf64_External_Rela); |
411e1bfb AM |
7701 | } |
7702 | } | |
7703 | } | |
7704 | else | |
7705 | ent->got.offset = (bfd_vma) -1; | |
65f38f15 AM |
7706 | } |
7707 | } | |
7708 | ||
7709 | /* Allocate global sym .plt and .got entries, and space for global | |
7710 | sym dynamic relocs. */ | |
4ce794b7 | 7711 | elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info); |
65f38f15 AM |
7712 | |
7713 | /* We now have determined the sizes of the various dynamic sections. | |
7714 | Allocate memory for them. */ | |
b34976b6 | 7715 | relocs = FALSE; |
65f38f15 AM |
7716 | for (s = dynobj->sections; s != NULL; s = s->next) |
7717 | { | |
7718 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
7719 | continue; | |
7720 | ||
4ce794b7 | 7721 | if (s == htab->brlt || s == htab->relbrlt) |
721956f4 AM |
7722 | /* These haven't been allocated yet; don't strip. */ |
7723 | continue; | |
e717da7e AM |
7724 | else if (s == htab->got |
7725 | || s == htab->plt | |
4ce794b7 | 7726 | || s == htab->glink) |
65f38f15 AM |
7727 | { |
7728 | /* Strip this section if we don't need it; see the | |
7729 | comment below. */ | |
5bd4f169 | 7730 | } |
65f38f15 | 7731 | else if (strncmp (bfd_get_section_name (dynobj, s), ".rela", 5) == 0) |
5bd4f169 | 7732 | { |
eea6121a | 7733 | if (s->size == 0) |
5bd4f169 AM |
7734 | { |
7735 | /* If we don't need this section, strip it from the | |
7736 | output file. This is mostly to handle .rela.bss and | |
7737 | .rela.plt. We must create both sections in | |
7738 | create_dynamic_sections, because they must be created | |
7739 | before the linker maps input sections to output | |
7740 | sections. The linker does that before | |
7741 | adjust_dynamic_symbol is called, and it is that | |
7742 | function which decides whether anything needs to go | |
7743 | into these sections. */ | |
5bd4f169 AM |
7744 | } |
7745 | else | |
7746 | { | |
4ce794b7 | 7747 | if (s != htab->relplt) |
b34976b6 | 7748 | relocs = TRUE; |
5bd4f169 AM |
7749 | |
7750 | /* We use the reloc_count field as a counter if we need | |
7751 | to copy relocs into the output file. */ | |
7752 | s->reloc_count = 0; | |
7753 | } | |
7754 | } | |
65f38f15 | 7755 | else |
5bd4f169 AM |
7756 | { |
7757 | /* It's not one of our sections, so don't allocate space. */ | |
7758 | continue; | |
7759 | } | |
7760 | ||
eea6121a | 7761 | if (s->size == 0) |
5bd4f169 | 7762 | { |
8423293d | 7763 | s->flags |= SEC_EXCLUDE; |
5bd4f169 AM |
7764 | continue; |
7765 | } | |
7766 | ||
5f333394 | 7767 | /* .plt is in the bss section. We don't initialise it. */ |
680a3378 | 7768 | if (s == htab->plt) |
5f333394 AM |
7769 | continue; |
7770 | ||
65f38f15 AM |
7771 | /* Allocate memory for the section contents. We use bfd_zalloc |
7772 | here in case unused entries are not reclaimed before the | |
7773 | section's contents are written out. This should not happen, | |
411e1bfb AM |
7774 | but this way if it does we get a R_PPC64_NONE reloc in .rela |
7775 | sections instead of garbage. | |
7776 | We also rely on the section contents being zero when writing | |
7777 | the GOT. */ | |
eea6121a | 7778 | s->contents = bfd_zalloc (dynobj, s->size); |
65f38f15 | 7779 | if (s->contents == NULL) |
b34976b6 | 7780 | return FALSE; |
5bd4f169 AM |
7781 | } |
7782 | ||
e717da7e AM |
7783 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) |
7784 | { | |
ee75fd95 | 7785 | if (!is_ppc64_elf_target (ibfd->xvec)) |
7b53ace3 AM |
7786 | continue; |
7787 | ||
e717da7e AM |
7788 | s = ppc64_elf_tdata (ibfd)->got; |
7789 | if (s != NULL && s != htab->got) | |
7790 | { | |
eea6121a | 7791 | if (s->size == 0) |
8423293d | 7792 | s->flags |= SEC_EXCLUDE; |
e717da7e AM |
7793 | else |
7794 | { | |
eea6121a | 7795 | s->contents = bfd_zalloc (ibfd, s->size); |
e717da7e AM |
7796 | if (s->contents == NULL) |
7797 | return FALSE; | |
7798 | } | |
7799 | } | |
7800 | s = ppc64_elf_tdata (ibfd)->relgot; | |
7801 | if (s != NULL) | |
7802 | { | |
eea6121a | 7803 | if (s->size == 0) |
8423293d | 7804 | s->flags |= SEC_EXCLUDE; |
e717da7e AM |
7805 | else |
7806 | { | |
eea6121a | 7807 | s->contents = bfd_zalloc (ibfd, s->size); |
e717da7e AM |
7808 | if (s->contents == NULL) |
7809 | return FALSE; | |
7810 | relocs = TRUE; | |
7811 | s->reloc_count = 0; | |
7812 | } | |
7813 | } | |
7814 | } | |
7815 | ||
e86ce104 | 7816 | if (htab->elf.dynamic_sections_created) |
5bd4f169 AM |
7817 | { |
7818 | /* Add some entries to the .dynamic section. We fill in the | |
7819 | values later, in ppc64_elf_finish_dynamic_sections, but we | |
7820 | must add the entries now so that we get the correct size for | |
7821 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
7822 | dynamic linker and used by the debugger. */ | |
dc810e39 | 7823 | #define add_dynamic_entry(TAG, VAL) \ |
5a580b3a | 7824 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) |
dc810e39 | 7825 | |
36af4a4e | 7826 | if (info->executable) |
5bd4f169 | 7827 | { |
dc810e39 | 7828 | if (!add_dynamic_entry (DT_DEBUG, 0)) |
b34976b6 | 7829 | return FALSE; |
5bd4f169 AM |
7830 | } |
7831 | ||
eea6121a | 7832 | if (htab->plt != NULL && htab->plt->size != 0) |
5bd4f169 | 7833 | { |
dc810e39 AM |
7834 | if (!add_dynamic_entry (DT_PLTGOT, 0) |
7835 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
7836 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
5d1634d7 AM |
7837 | || !add_dynamic_entry (DT_JMPREL, 0) |
7838 | || !add_dynamic_entry (DT_PPC64_GLINK, 0)) | |
b34976b6 | 7839 | return FALSE; |
5bd4f169 AM |
7840 | } |
7841 | ||
19397422 AM |
7842 | if (NO_OPD_RELOCS) |
7843 | { | |
7844 | if (!add_dynamic_entry (DT_PPC64_OPD, 0) | |
7845 | || !add_dynamic_entry (DT_PPC64_OPDSZ, 0)) | |
b34976b6 | 7846 | return FALSE; |
19397422 AM |
7847 | } |
7848 | ||
5bd4f169 AM |
7849 | if (relocs) |
7850 | { | |
dc810e39 AM |
7851 | if (!add_dynamic_entry (DT_RELA, 0) |
7852 | || !add_dynamic_entry (DT_RELASZ, 0) | |
7853 | || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela))) | |
b34976b6 | 7854 | return FALSE; |
5bd4f169 | 7855 | |
65f38f15 AM |
7856 | /* If any dynamic relocs apply to a read-only section, |
7857 | then we need a DT_TEXTREL entry. */ | |
248866a8 | 7858 | if ((info->flags & DF_TEXTREL) == 0) |
4ce794b7 | 7859 | elf_link_hash_traverse (&htab->elf, readonly_dynrelocs, info); |
5bd4f169 | 7860 | |
65f38f15 | 7861 | if ((info->flags & DF_TEXTREL) != 0) |
5bd4f169 | 7862 | { |
65f38f15 | 7863 | if (!add_dynamic_entry (DT_TEXTREL, 0)) |
b34976b6 | 7864 | return FALSE; |
5bd4f169 | 7865 | } |
5bd4f169 | 7866 | } |
5bd4f169 | 7867 | } |
65f38f15 | 7868 | #undef add_dynamic_entry |
5bd4f169 | 7869 | |
b34976b6 | 7870 | return TRUE; |
5bd4f169 AM |
7871 | } |
7872 | ||
721956f4 | 7873 | /* Determine the type of stub needed, if any, for a call. */ |
5bd4f169 | 7874 | |
4ce794b7 AM |
7875 | static inline enum ppc_stub_type |
7876 | ppc_type_of_stub (asection *input_sec, | |
7877 | const Elf_Internal_Rela *rel, | |
7878 | struct ppc_link_hash_entry **hash, | |
7879 | bfd_vma destination) | |
5bd4f169 | 7880 | { |
721956f4 AM |
7881 | struct ppc_link_hash_entry *h = *hash; |
7882 | bfd_vma location; | |
7883 | bfd_vma branch_offset; | |
7884 | bfd_vma max_branch_offset; | |
4ce794b7 | 7885 | enum elf_ppc64_reloc_type r_type; |
5bd4f169 | 7886 | |
721956f4 AM |
7887 | if (h != NULL) |
7888 | { | |
7889 | if (h->oh != NULL | |
8387904d AM |
7890 | && h->oh->is_func_descriptor) |
7891 | h = h->oh; | |
7892 | ||
7893 | if (h->elf.dynindx != -1) | |
5bd4f169 | 7894 | { |
411e1bfb | 7895 | struct plt_entry *ent; |
8387904d AM |
7896 | |
7897 | for (ent = h->elf.plt.plist; ent != NULL; ent = ent->next) | |
411e1bfb AM |
7898 | if (ent->addend == rel->r_addend |
7899 | && ent->plt.offset != (bfd_vma) -1) | |
7900 | { | |
8387904d | 7901 | *hash = h; |
411e1bfb AM |
7902 | return ppc_stub_plt_call; |
7903 | } | |
5bd4f169 AM |
7904 | } |
7905 | ||
ee7de3e6 AM |
7906 | if (!(h->elf.root.type == bfd_link_hash_defined |
7907 | || h->elf.root.type == bfd_link_hash_defweak) | |
7908 | || h->elf.root.u.def.section->output_section == NULL) | |
721956f4 | 7909 | return ppc_stub_none; |
5d1634d7 | 7910 | } |
5d1634d7 | 7911 | |
721956f4 AM |
7912 | /* Determine where the call point is. */ |
7913 | location = (input_sec->output_offset | |
7914 | + input_sec->output_section->vma | |
7915 | + rel->r_offset); | |
5d1634d7 | 7916 | |
721956f4 AM |
7917 | branch_offset = destination - location; |
7918 | r_type = ELF64_R_TYPE (rel->r_info); | |
5d1634d7 | 7919 | |
721956f4 AM |
7920 | /* Determine if a long branch stub is needed. */ |
7921 | max_branch_offset = 1 << 25; | |
4ce794b7 | 7922 | if (r_type != R_PPC64_REL24) |
721956f4 | 7923 | max_branch_offset = 1 << 15; |
5d1634d7 | 7924 | |
721956f4 AM |
7925 | if (branch_offset + max_branch_offset >= 2 * max_branch_offset) |
7926 | /* We need a stub. Figure out whether a long_branch or plt_branch | |
7927 | is needed later. */ | |
7928 | return ppc_stub_long_branch; | |
5d1634d7 | 7929 | |
721956f4 | 7930 | return ppc_stub_none; |
5d1634d7 AM |
7931 | } |
7932 | ||
7933 | /* Build a .plt call stub. */ | |
7934 | ||
4ce794b7 AM |
7935 | static inline bfd_byte * |
7936 | build_plt_stub (bfd *obfd, bfd_byte *p, int offset) | |
5d1634d7 AM |
7937 | { |
7938 | #define PPC_LO(v) ((v) & 0xffff) | |
7939 | #define PPC_HI(v) (((v) >> 16) & 0xffff) | |
7940 | #define PPC_HA(v) PPC_HI ((v) + 0x8000) | |
7941 | ||
5d1634d7 | 7942 | bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (offset), p), p += 4; |
ad8e1ba5 | 7943 | bfd_put_32 (obfd, STD_R2_40R1, p), p += 4; |
5d1634d7 AM |
7944 | bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset), p), p += 4; |
7945 | if (PPC_HA (offset + 8) != PPC_HA (offset)) | |
ad8e1ba5 | 7946 | bfd_put_32 (obfd, ADDIS_R12_R12 | 1, p), p += 4; |
5d1634d7 AM |
7947 | offset += 8; |
7948 | bfd_put_32 (obfd, LD_R2_0R12 | PPC_LO (offset), p), p += 4; | |
7949 | if (PPC_HA (offset + 8) != PPC_HA (offset)) | |
ad8e1ba5 | 7950 | bfd_put_32 (obfd, ADDIS_R12_R12 | 1, p), p += 4; |
5d1634d7 AM |
7951 | offset += 8; |
7952 | bfd_put_32 (obfd, MTCTR_R11, p), p += 4; | |
7953 | bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset), p), p += 4; | |
7954 | bfd_put_32 (obfd, BCTR, p), p += 4; | |
7955 | return p; | |
7956 | } | |
7957 | ||
b34976b6 | 7958 | static bfd_boolean |
4ce794b7 | 7959 | ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg) |
5d1634d7 | 7960 | { |
721956f4 AM |
7961 | struct ppc_stub_hash_entry *stub_entry; |
7962 | struct ppc_branch_hash_entry *br_entry; | |
5d1634d7 AM |
7963 | struct bfd_link_info *info; |
7964 | struct ppc_link_hash_table *htab; | |
721956f4 AM |
7965 | bfd_byte *loc; |
7966 | bfd_byte *p; | |
7967 | unsigned int indx; | |
411e1bfb | 7968 | struct plt_entry *ent; |
ee75fd95 | 7969 | bfd_vma dest, off; |
721956f4 | 7970 | int size; |
5d1634d7 | 7971 | |
721956f4 AM |
7972 | /* Massage our args to the form they really have. */ |
7973 | stub_entry = (struct ppc_stub_hash_entry *) gen_entry; | |
4ce794b7 | 7974 | info = in_arg; |
5d1634d7 | 7975 | |
5d1634d7 AM |
7976 | htab = ppc_hash_table (info); |
7977 | ||
721956f4 | 7978 | /* Make a note of the offset within the stubs for this entry. */ |
eea6121a | 7979 | stub_entry->stub_offset = stub_entry->stub_sec->size; |
97b639ba | 7980 | loc = stub_entry->stub_sec->contents + stub_entry->stub_offset; |
721956f4 | 7981 | |
4ce794b7 | 7982 | htab->stub_count[stub_entry->stub_type - 1] += 1; |
721956f4 | 7983 | switch (stub_entry->stub_type) |
5d1634d7 | 7984 | { |
721956f4 | 7985 | case ppc_stub_long_branch: |
ad8e1ba5 | 7986 | case ppc_stub_long_branch_r2off: |
721956f4 | 7987 | /* Branches are relative. This is where we are going to. */ |
ee75fd95 AM |
7988 | off = dest = (stub_entry->target_value |
7989 | + stub_entry->target_section->output_offset | |
7990 | + stub_entry->target_section->output_section->vma); | |
5d1634d7 | 7991 | |
721956f4 AM |
7992 | /* And this is where we are coming from. */ |
7993 | off -= (stub_entry->stub_offset | |
97b639ba AM |
7994 | + stub_entry->stub_sec->output_offset |
7995 | + stub_entry->stub_sec->output_section->vma); | |
e86ce104 | 7996 | |
ad8e1ba5 AM |
7997 | if (stub_entry->stub_type != ppc_stub_long_branch_r2off) |
7998 | size = 4; | |
7999 | else | |
8000 | { | |
8001 | bfd_vma r2off; | |
8002 | ||
8003 | r2off = (htab->stub_group[stub_entry->target_section->id].toc_off | |
8004 | - htab->stub_group[stub_entry->id_sec->id].toc_off); | |
97b639ba | 8005 | bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc); |
ad8e1ba5 | 8006 | loc += 4; |
97b639ba | 8007 | bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc); |
ad8e1ba5 | 8008 | loc += 4; |
97b639ba | 8009 | bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc); |
ad8e1ba5 AM |
8010 | loc += 4; |
8011 | off -= 12; | |
8012 | size = 16; | |
8013 | } | |
97b639ba | 8014 | bfd_put_32 (htab->stub_bfd, B_DOT | (off & 0x3fffffc), loc); |
ad8e1ba5 AM |
8015 | |
8016 | BFD_ASSERT (off + (1 << 25) < (bfd_vma) (1 << 26)); | |
ee75fd95 AM |
8017 | |
8018 | if (info->emitrelocations) | |
8019 | { | |
8020 | Elf_Internal_Rela *relocs, *r; | |
8021 | struct bfd_elf_section_data *elfsec_data; | |
8022 | ||
8023 | elfsec_data = elf_section_data (stub_entry->stub_sec); | |
8024 | relocs = elfsec_data->relocs; | |
8025 | if (relocs == NULL) | |
8026 | { | |
8027 | bfd_size_type relsize; | |
8028 | relsize = stub_entry->stub_sec->reloc_count * sizeof (*relocs); | |
8029 | relocs = bfd_alloc (htab->stub_bfd, relsize); | |
8030 | if (relocs == NULL) | |
8031 | return FALSE; | |
8032 | elfsec_data->relocs = relocs; | |
8033 | elfsec_data->rel_hdr.sh_size = relsize; | |
8034 | elfsec_data->rel_hdr.sh_entsize = 24; | |
8035 | stub_entry->stub_sec->reloc_count = 0; | |
8036 | } | |
8037 | r = relocs + stub_entry->stub_sec->reloc_count; | |
8038 | stub_entry->stub_sec->reloc_count += 1; | |
8039 | r->r_offset = loc - stub_entry->stub_sec->contents; | |
8040 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL24); | |
8041 | r->r_addend = dest; | |
8042 | if (stub_entry->h != NULL) | |
8043 | { | |
8044 | struct elf_link_hash_entry **hashes; | |
8045 | unsigned long symndx; | |
8046 | struct ppc_link_hash_entry *h; | |
8047 | ||
8048 | hashes = elf_sym_hashes (htab->stub_bfd); | |
8049 | if (hashes == NULL) | |
8050 | { | |
8051 | bfd_size_type hsize; | |
8052 | ||
8053 | hsize = (htab->stub_globals + 1) * sizeof (*hashes); | |
8054 | hashes = bfd_zalloc (htab->stub_bfd, hsize); | |
8055 | if (hashes == NULL) | |
8056 | return FALSE; | |
8057 | elf_sym_hashes (htab->stub_bfd) = hashes; | |
8058 | htab->stub_globals = 1; | |
8059 | } | |
8060 | symndx = htab->stub_globals++; | |
8061 | h = stub_entry->h; | |
8062 | hashes[symndx] = &h->elf; | |
8063 | r->r_info = ELF64_R_INFO (symndx, R_PPC64_REL24); | |
8064 | if (h->oh != NULL && h->oh->is_func) | |
8065 | h = h->oh; | |
8066 | if (h->elf.root.u.def.section != stub_entry->target_section) | |
8067 | /* H is an opd symbol. The addend must be zero. */ | |
8068 | r->r_addend = 0; | |
8069 | else | |
8070 | { | |
8071 | off = (h->elf.root.u.def.value | |
8072 | + h->elf.root.u.def.section->output_offset | |
8073 | + h->elf.root.u.def.section->output_section->vma); | |
8074 | r->r_addend -= off; | |
8075 | } | |
8076 | } | |
8077 | } | |
721956f4 | 8078 | break; |
e86ce104 | 8079 | |
721956f4 | 8080 | case ppc_stub_plt_branch: |
ad8e1ba5 | 8081 | case ppc_stub_plt_branch_r2off: |
721956f4 AM |
8082 | br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table, |
8083 | stub_entry->root.string + 9, | |
b34976b6 | 8084 | FALSE, FALSE); |
721956f4 AM |
8085 | if (br_entry == NULL) |
8086 | { | |
8087 | (*_bfd_error_handler) (_("can't find branch stub `%s'"), | |
8088 | stub_entry->root.string + 9); | |
b34976b6 AM |
8089 | htab->stub_error = TRUE; |
8090 | return FALSE; | |
721956f4 AM |
8091 | } |
8092 | ||
8093 | off = (stub_entry->target_value | |
8094 | + stub_entry->target_section->output_offset | |
8095 | + stub_entry->target_section->output_section->vma); | |
8096 | ||
4ce794b7 AM |
8097 | bfd_put_64 (htab->brlt->owner, off, |
8098 | htab->brlt->contents + br_entry->offset); | |
721956f4 | 8099 | |
ee75fd95 | 8100 | if (htab->relbrlt != NULL) |
721956f4 AM |
8101 | { |
8102 | /* Create a reloc for the branch lookup table entry. */ | |
8103 | Elf_Internal_Rela rela; | |
ad8e1ba5 | 8104 | bfd_byte *rl; |
5d1634d7 | 8105 | |
721956f4 | 8106 | rela.r_offset = (br_entry->offset |
4ce794b7 AM |
8107 | + htab->brlt->output_offset |
8108 | + htab->brlt->output_section->vma); | |
721956f4 AM |
8109 | rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); |
8110 | rela.r_addend = off; | |
8111 | ||
4ce794b7 AM |
8112 | rl = htab->relbrlt->contents; |
8113 | rl += htab->relbrlt->reloc_count++ * sizeof (Elf64_External_Rela); | |
8114 | bfd_elf64_swap_reloca_out (htab->relbrlt->owner, &rela, rl); | |
721956f4 AM |
8115 | } |
8116 | ||
8117 | off = (br_entry->offset | |
4ce794b7 AM |
8118 | + htab->brlt->output_offset |
8119 | + htab->brlt->output_section->vma | |
8120 | - elf_gp (htab->brlt->output_section->owner) | |
ad8e1ba5 | 8121 | - htab->stub_group[stub_entry->id_sec->id].toc_off); |
721956f4 | 8122 | |
ad8e1ba5 | 8123 | if (off + 0x80008000 > 0xffffffff || (off & 7) != 0) |
5d1634d7 AM |
8124 | { |
8125 | (*_bfd_error_handler) | |
e86ce104 | 8126 | (_("linkage table error against `%s'"), |
721956f4 | 8127 | stub_entry->root.string); |
5d1634d7 | 8128 | bfd_set_error (bfd_error_bad_value); |
b34976b6 AM |
8129 | htab->stub_error = TRUE; |
8130 | return FALSE; | |
5d1634d7 | 8131 | } |
41bd81ab | 8132 | |
721956f4 | 8133 | indx = off; |
ad8e1ba5 AM |
8134 | if (stub_entry->stub_type != ppc_stub_plt_branch_r2off) |
8135 | { | |
97b639ba | 8136 | bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (indx), loc); |
ad8e1ba5 | 8137 | loc += 4; |
97b639ba | 8138 | bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (indx), loc); |
ad8e1ba5 AM |
8139 | size = 16; |
8140 | } | |
8141 | else | |
8142 | { | |
8143 | bfd_vma r2off; | |
8144 | ||
8145 | r2off = (htab->stub_group[stub_entry->target_section->id].toc_off | |
8146 | - htab->stub_group[stub_entry->id_sec->id].toc_off); | |
97b639ba | 8147 | bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc); |
ad8e1ba5 | 8148 | loc += 4; |
97b639ba | 8149 | bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (indx), loc); |
ad8e1ba5 | 8150 | loc += 4; |
97b639ba | 8151 | bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (indx), loc); |
ad8e1ba5 | 8152 | loc += 4; |
97b639ba | 8153 | bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc); |
ad8e1ba5 | 8154 | loc += 4; |
97b639ba | 8155 | bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc); |
ad8e1ba5 AM |
8156 | size = 28; |
8157 | } | |
8158 | loc += 4; | |
97b639ba | 8159 | bfd_put_32 (htab->stub_bfd, MTCTR_R11, loc); |
ad8e1ba5 | 8160 | loc += 4; |
97b639ba | 8161 | bfd_put_32 (htab->stub_bfd, BCTR, loc); |
721956f4 | 8162 | break; |
5d1634d7 | 8163 | |
721956f4 | 8164 | case ppc_stub_plt_call: |
c862ae31 AM |
8165 | /* Do the best we can for shared libraries built without |
8166 | exporting ".foo" for each "foo". This can happen when symbol | |
8167 | versioning scripts strip all bar a subset of symbols. */ | |
8387904d AM |
8168 | if (stub_entry->h->oh != NULL |
8169 | && stub_entry->h->oh->elf.root.type != bfd_link_hash_defined | |
34814b9f | 8170 | && stub_entry->h->oh->elf.root.type != bfd_link_hash_defweak) |
c862ae31 AM |
8171 | { |
8172 | /* Point the symbol at the stub. There may be multiple stubs, | |
8173 | we don't really care; The main thing is to make this sym | |
8f3bab57 AM |
8174 | defined somewhere. Maybe defining the symbol in the stub |
8175 | section is a silly idea. If we didn't do this, htab->top_id | |
8176 | could disappear. */ | |
34814b9f AM |
8177 | stub_entry->h->oh->elf.root.type = bfd_link_hash_defined; |
8178 | stub_entry->h->oh->elf.root.u.def.section = stub_entry->stub_sec; | |
8179 | stub_entry->h->oh->elf.root.u.def.value = stub_entry->stub_offset; | |
c862ae31 AM |
8180 | } |
8181 | ||
721956f4 | 8182 | /* Now build the stub. */ |
411e1bfb AM |
8183 | off = (bfd_vma) -1; |
8184 | for (ent = stub_entry->h->elf.plt.plist; ent != NULL; ent = ent->next) | |
8185 | if (ent->addend == stub_entry->addend) | |
8186 | { | |
8187 | off = ent->plt.offset; | |
8188 | break; | |
8189 | } | |
721956f4 AM |
8190 | if (off >= (bfd_vma) -2) |
8191 | abort (); | |
8192 | ||
8193 | off &= ~ (bfd_vma) 1; | |
4ce794b7 AM |
8194 | off += (htab->plt->output_offset |
8195 | + htab->plt->output_section->vma | |
8196 | - elf_gp (htab->plt->output_section->owner) | |
ad8e1ba5 | 8197 | - htab->stub_group[stub_entry->id_sec->id].toc_off); |
721956f4 | 8198 | |
ad8e1ba5 | 8199 | if (off + 0x80008000 > 0xffffffff || (off & 7) != 0) |
721956f4 AM |
8200 | { |
8201 | (*_bfd_error_handler) | |
8202 | (_("linkage table error against `%s'"), | |
8203 | stub_entry->h->elf.root.root.string); | |
8204 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 AM |
8205 | htab->stub_error = TRUE; |
8206 | return FALSE; | |
721956f4 AM |
8207 | } |
8208 | ||
97b639ba | 8209 | p = build_plt_stub (htab->stub_bfd, loc, off); |
721956f4 AM |
8210 | size = p - loc; |
8211 | break; | |
8212 | ||
8213 | default: | |
8214 | BFD_FAIL (); | |
b34976b6 | 8215 | return FALSE; |
721956f4 AM |
8216 | } |
8217 | ||
eea6121a | 8218 | stub_entry->stub_sec->size += size; |
97b639ba | 8219 | |
ee75fd95 | 8220 | if (htab->emit_stub_syms) |
97b639ba AM |
8221 | { |
8222 | struct elf_link_hash_entry *h; | |
ee75fd95 AM |
8223 | size_t len1, len2; |
8224 | char *name; | |
8225 | const char *const stub_str[] = { "long_branch", | |
8226 | "long_branch_r2off", | |
8227 | "plt_branch", | |
8228 | "plt_branch_r2off", | |
8229 | "plt_call" }; | |
8230 | ||
8231 | len1 = strlen (stub_str[stub_entry->stub_type - 1]); | |
8232 | len2 = strlen (stub_entry->root.string); | |
8233 | name = bfd_malloc (len1 + len2 + 2); | |
8234 | if (name == NULL) | |
8235 | return FALSE; | |
8236 | memcpy (name, stub_entry->root.string, 9); | |
8237 | memcpy (name + 9, stub_str[stub_entry->stub_type - 1], len1); | |
8238 | memcpy (name + len1 + 9, stub_entry->root.string + 8, len2 - 8 + 1); | |
8239 | h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE); | |
97b639ba AM |
8240 | if (h == NULL) |
8241 | return FALSE; | |
8242 | if (h->root.type == bfd_link_hash_new) | |
8243 | { | |
8244 | h->root.type = bfd_link_hash_defined; | |
8245 | h->root.u.def.section = stub_entry->stub_sec; | |
8246 | h->root.u.def.value = stub_entry->stub_offset; | |
f5385ebf AM |
8247 | h->ref_regular = 1; |
8248 | h->def_regular = 1; | |
8249 | h->ref_regular_nonweak = 1; | |
8250 | h->forced_local = 1; | |
8251 | h->non_elf = 0; | |
97b639ba AM |
8252 | } |
8253 | } | |
8254 | ||
b34976b6 | 8255 | return TRUE; |
721956f4 AM |
8256 | } |
8257 | ||
8258 | /* As above, but don't actually build the stub. Just bump offset so | |
8259 | we know stub section sizes, and select plt_branch stubs where | |
8260 | long_branch stubs won't do. */ | |
8261 | ||
b34976b6 | 8262 | static bfd_boolean |
4ce794b7 | 8263 | ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg) |
721956f4 AM |
8264 | { |
8265 | struct ppc_stub_hash_entry *stub_entry; | |
63bc6f6c | 8266 | struct bfd_link_info *info; |
721956f4 AM |
8267 | struct ppc_link_hash_table *htab; |
8268 | bfd_vma off; | |
8269 | int size; | |
8270 | ||
8271 | /* Massage our args to the form they really have. */ | |
8272 | stub_entry = (struct ppc_stub_hash_entry *) gen_entry; | |
63bc6f6c AM |
8273 | info = in_arg; |
8274 | ||
8275 | htab = ppc_hash_table (info); | |
721956f4 AM |
8276 | |
8277 | if (stub_entry->stub_type == ppc_stub_plt_call) | |
8278 | { | |
411e1bfb | 8279 | struct plt_entry *ent; |
58ac9f71 | 8280 | off = (bfd_vma) -1; |
411e1bfb AM |
8281 | for (ent = stub_entry->h->elf.plt.plist; ent != NULL; ent = ent->next) |
8282 | if (ent->addend == stub_entry->addend) | |
8283 | { | |
8284 | off = ent->plt.offset & ~(bfd_vma) 1; | |
8285 | break; | |
8286 | } | |
58ac9f71 | 8287 | if (off >= (bfd_vma) -2) |
411e1bfb | 8288 | abort (); |
4ce794b7 AM |
8289 | off += (htab->plt->output_offset |
8290 | + htab->plt->output_section->vma | |
8291 | - elf_gp (htab->plt->output_section->owner) | |
ad8e1ba5 | 8292 | - htab->stub_group[stub_entry->id_sec->id].toc_off); |
721956f4 | 8293 | |
ad8e1ba5 | 8294 | size = PLT_CALL_STUB_SIZE; |
4ce794b7 | 8295 | if (PPC_HA (off + 16) != PPC_HA (off)) |
721956f4 AM |
8296 | size += 4; |
8297 | } | |
8298 | else | |
8299 | { | |
ad8e1ba5 AM |
8300 | /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off |
8301 | variants. */ | |
721956f4 AM |
8302 | off = (stub_entry->target_value |
8303 | + stub_entry->target_section->output_offset | |
8304 | + stub_entry->target_section->output_section->vma); | |
eea6121a | 8305 | off -= (stub_entry->stub_sec->size |
721956f4 AM |
8306 | + stub_entry->stub_sec->output_offset |
8307 | + stub_entry->stub_sec->output_section->vma); | |
8308 | ||
ad8e1ba5 AM |
8309 | /* Reset the stub type from the plt variant in case we now |
8310 | can reach with a shorter stub. */ | |
8311 | if (stub_entry->stub_type >= ppc_stub_plt_branch) | |
8312 | stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch; | |
8313 | ||
8314 | size = 4; | |
8315 | if (stub_entry->stub_type == ppc_stub_long_branch_r2off) | |
8316 | { | |
8317 | off -= 12; | |
8318 | size = 16; | |
8319 | } | |
8320 | ||
8321 | /* If the branch offset if too big, use a ppc_stub_plt_branch. */ | |
721956f4 AM |
8322 | if (off + (1 << 25) >= (bfd_vma) (1 << 26)) |
8323 | { | |
8324 | struct ppc_branch_hash_entry *br_entry; | |
8325 | ||
8326 | br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table, | |
8327 | stub_entry->root.string + 9, | |
b34976b6 | 8328 | TRUE, FALSE); |
721956f4 AM |
8329 | if (br_entry == NULL) |
8330 | { | |
8331 | (*_bfd_error_handler) (_("can't build branch stub `%s'"), | |
8332 | stub_entry->root.string + 9); | |
b34976b6 AM |
8333 | htab->stub_error = TRUE; |
8334 | return FALSE; | |
721956f4 AM |
8335 | } |
8336 | ||
8337 | if (br_entry->iter != htab->stub_iteration) | |
8338 | { | |
8339 | br_entry->iter = htab->stub_iteration; | |
eea6121a AM |
8340 | br_entry->offset = htab->brlt->size; |
8341 | htab->brlt->size += 8; | |
63bc6f6c | 8342 | |
ee75fd95 | 8343 | if (htab->relbrlt != NULL) |
eea6121a | 8344 | htab->relbrlt->size += sizeof (Elf64_External_Rela); |
721956f4 | 8345 | } |
ad8e1ba5 AM |
8346 | |
8347 | stub_entry->stub_type += ppc_stub_plt_branch - ppc_stub_long_branch; | |
721956f4 | 8348 | size = 16; |
ad8e1ba5 AM |
8349 | if (stub_entry->stub_type != ppc_stub_plt_branch) |
8350 | size = 28; | |
721956f4 | 8351 | } |
ee75fd95 AM |
8352 | |
8353 | if (info->emitrelocations | |
8354 | && (stub_entry->stub_type == ppc_stub_long_branch | |
8355 | || stub_entry->stub_type == ppc_stub_long_branch_r2off)) | |
8356 | stub_entry->stub_sec->reloc_count += 1; | |
721956f4 AM |
8357 | } |
8358 | ||
eea6121a | 8359 | stub_entry->stub_sec->size += size; |
b34976b6 | 8360 | return TRUE; |
721956f4 AM |
8361 | } |
8362 | ||
8363 | /* Set up various things so that we can make a list of input sections | |
8364 | for each output section included in the link. Returns -1 on error, | |
cedb70c5 | 8365 | 0 when no stubs will be needed, and 1 on success. */ |
721956f4 AM |
8366 | |
8367 | int | |
4c52953f AM |
8368 | ppc64_elf_setup_section_lists (bfd *output_bfd, |
8369 | struct bfd_link_info *info, | |
8370 | int no_multi_toc) | |
721956f4 AM |
8371 | { |
8372 | bfd *input_bfd; | |
734b6cf9 | 8373 | int top_id, top_index, id; |
721956f4 | 8374 | asection *section; |
734b6cf9 | 8375 | asection **input_list; |
721956f4 AM |
8376 | bfd_size_type amt; |
8377 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
8378 | ||
4c52953f AM |
8379 | htab->no_multi_toc = no_multi_toc; |
8380 | ||
4ce794b7 | 8381 | if (htab->brlt == NULL) |
721956f4 AM |
8382 | return 0; |
8383 | ||
1e2f5b6e | 8384 | /* Find the top input section id. */ |
3d6f9012 | 8385 | for (input_bfd = info->input_bfds, top_id = 3; |
721956f4 AM |
8386 | input_bfd != NULL; |
8387 | input_bfd = input_bfd->link_next) | |
8388 | { | |
721956f4 AM |
8389 | for (section = input_bfd->sections; |
8390 | section != NULL; | |
8391 | section = section->next) | |
8392 | { | |
8393 | if (top_id < section->id) | |
8394 | top_id = section->id; | |
8395 | } | |
8396 | } | |
721956f4 | 8397 | |
8f3bab57 | 8398 | htab->top_id = top_id; |
721956f4 | 8399 | amt = sizeof (struct map_stub) * (top_id + 1); |
4ce794b7 | 8400 | htab->stub_group = bfd_zmalloc (amt); |
721956f4 AM |
8401 | if (htab->stub_group == NULL) |
8402 | return -1; | |
8403 | ||
3d6f9012 AM |
8404 | /* Set toc_off for com, und, abs and ind sections. */ |
8405 | for (id = 0; id < 3; id++) | |
8406 | htab->stub_group[id].toc_off = TOC_BASE_OFF; | |
721956f4 | 8407 | |
3d6f9012 | 8408 | elf_gp (output_bfd) = htab->toc_curr = ppc64_elf_toc (output_bfd); |
734b6cf9 AM |
8409 | |
8410 | /* We can't use output_bfd->section_count here to find the top output | |
8411 | section index as some sections may have been removed, and | |
8423293d | 8412 | strip_excluded_output_sections doesn't renumber the indices. */ |
734b6cf9 AM |
8413 | for (section = output_bfd->sections, top_index = 0; |
8414 | section != NULL; | |
8415 | section = section->next) | |
8416 | { | |
8417 | if (top_index < section->index) | |
8418 | top_index = section->index; | |
8419 | } | |
8420 | ||
8421 | htab->top_index = top_index; | |
8422 | amt = sizeof (asection *) * (top_index + 1); | |
4ce794b7 | 8423 | input_list = bfd_zmalloc (amt); |
734b6cf9 AM |
8424 | htab->input_list = input_list; |
8425 | if (input_list == NULL) | |
8426 | return -1; | |
8427 | ||
721956f4 AM |
8428 | return 1; |
8429 | } | |
8430 | ||
e717da7e AM |
8431 | /* The linker repeatedly calls this function for each TOC input section |
8432 | and linker generated GOT section. Group input bfds such that the toc | |
8433 | within a group is less than 64k in size. Will break with cute linker | |
8434 | scripts that play games with dot in the output toc section. */ | |
ad8e1ba5 AM |
8435 | |
8436 | void | |
4ce794b7 | 8437 | ppc64_elf_next_toc_section (struct bfd_link_info *info, asection *isec) |
ad8e1ba5 AM |
8438 | { |
8439 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
8440 | ||
4c52953f AM |
8441 | if (!htab->no_multi_toc) |
8442 | { | |
8443 | bfd_vma addr = isec->output_offset + isec->output_section->vma; | |
8444 | bfd_vma off = addr - htab->toc_curr; | |
8445 | ||
8446 | if (off + isec->size > 0x10000) | |
8447 | htab->toc_curr = addr; | |
99877b66 | 8448 | |
4c52953f AM |
8449 | elf_gp (isec->owner) = (htab->toc_curr |
8450 | - elf_gp (isec->output_section->owner) | |
8451 | + TOC_BASE_OFF); | |
8452 | } | |
ad8e1ba5 AM |
8453 | } |
8454 | ||
8455 | /* Called after the last call to the above function. */ | |
8456 | ||
8457 | void | |
4c52953f | 8458 | ppc64_elf_reinit_toc (bfd *output_bfd, struct bfd_link_info *info) |
ad8e1ba5 AM |
8459 | { |
8460 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
ad8e1ba5 | 8461 | |
4c52953f AM |
8462 | htab->multi_toc_needed = htab->toc_curr != elf_gp (output_bfd); |
8463 | ||
ad8e1ba5 AM |
8464 | /* toc_curr tracks the TOC offset used for code sections below in |
8465 | ppc64_elf_next_input_section. Start off at 0x8000. */ | |
3d6f9012 | 8466 | htab->toc_curr = TOC_BASE_OFF; |
ad8e1ba5 AM |
8467 | } |
8468 | ||
9b5ecbd0 AM |
8469 | /* No toc references were found in ISEC. If the code in ISEC makes no |
8470 | calls, then there's no need to use toc adjusting stubs when branching | |
8471 | into ISEC. Actually, indirect calls from ISEC are OK as they will | |
4c52953f AM |
8472 | load r2. Returns -1 on error, 0 for no stub needed, 1 for stub |
8473 | needed, and 2 if a cyclical call-graph was found but no other reason | |
8474 | for a stub was detected. If called from the top level, a return of | |
8475 | 2 means the same as a return of 0. */ | |
9b5ecbd0 AM |
8476 | |
8477 | static int | |
4ce794b7 | 8478 | toc_adjusting_stub_needed (struct bfd_link_info *info, asection *isec) |
9b5ecbd0 | 8479 | { |
4c52953f AM |
8480 | Elf_Internal_Rela *relstart, *rel; |
8481 | Elf_Internal_Sym *local_syms; | |
9b5ecbd0 | 8482 | int ret; |
4c52953f | 8483 | struct ppc_link_hash_table *htab; |
9b5ecbd0 | 8484 | |
772119ce AM |
8485 | /* We know none of our code bearing sections will need toc stubs. */ |
8486 | if ((isec->flags & SEC_LINKER_CREATED) != 0) | |
8487 | return 0; | |
8488 | ||
eea6121a | 8489 | if (isec->size == 0) |
082c50f8 AM |
8490 | return 0; |
8491 | ||
4c52953f AM |
8492 | if (isec->output_section == NULL) |
8493 | return 0; | |
8494 | ||
9b5ecbd0 AM |
8495 | /* Hack for linux kernel. .fixup contains branches, but only back to |
8496 | the function that hit an exception. */ | |
4c52953f AM |
8497 | if (strcmp (isec->name, ".fixup") == 0) |
8498 | return 0; | |
9b5ecbd0 | 8499 | |
4c52953f AM |
8500 | if (isec->reloc_count == 0) |
8501 | return 0; | |
8502 | ||
8503 | relstart = _bfd_elf_link_read_relocs (isec->owner, isec, NULL, NULL, | |
8504 | info->keep_memory); | |
8505 | if (relstart == NULL) | |
8506 | return -1; | |
8507 | ||
8508 | /* Look for branches to outside of this section. */ | |
8509 | local_syms = NULL; | |
8510 | ret = 0; | |
8511 | htab = ppc_hash_table (info); | |
8512 | for (rel = relstart; rel < relstart + isec->reloc_count; ++rel) | |
9b5ecbd0 | 8513 | { |
4c52953f AM |
8514 | enum elf_ppc64_reloc_type r_type; |
8515 | unsigned long r_symndx; | |
8516 | struct elf_link_hash_entry *h; | |
8517 | Elf_Internal_Sym *sym; | |
8518 | asection *sym_sec; | |
8519 | long *opd_adjust; | |
8520 | bfd_vma sym_value; | |
8521 | bfd_vma dest; | |
8522 | ||
8523 | r_type = ELF64_R_TYPE (rel->r_info); | |
8524 | if (r_type != R_PPC64_REL24 | |
8525 | && r_type != R_PPC64_REL14 | |
8526 | && r_type != R_PPC64_REL14_BRTAKEN | |
8527 | && r_type != R_PPC64_REL14_BRNTAKEN) | |
8528 | continue; | |
8529 | ||
8530 | r_symndx = ELF64_R_SYM (rel->r_info); | |
8531 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, r_symndx, | |
8532 | isec->owner)) | |
9b5ecbd0 | 8533 | { |
4c52953f AM |
8534 | ret = -1; |
8535 | break; | |
9b5ecbd0 | 8536 | } |
9b5ecbd0 | 8537 | |
2917689a AM |
8538 | /* Calls to dynamic lib functions go through a plt call stub |
8539 | that uses r2. Branches to undefined symbols might be a call | |
8540 | using old-style dot symbols that can be satisfied by a plt | |
8541 | call into a new-style dynamic library. */ | |
4c52953f | 8542 | if (sym_sec == NULL) |
2917689a AM |
8543 | { |
8544 | struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h; | |
8545 | if (eh != NULL | |
8546 | && eh->oh != NULL | |
8547 | && eh->oh->elf.plt.plist != NULL) | |
8548 | { | |
8549 | ret = 1; | |
8550 | break; | |
8551 | } | |
4c52953f | 8552 | |
2917689a AM |
8553 | /* Ignore other undefined symbols. */ |
8554 | continue; | |
8555 | } | |
8556 | ||
8557 | /* Assume branches to other sections not included in the link need | |
8558 | stubs too, to cover -R and absolute syms. */ | |
4c52953f AM |
8559 | if (sym_sec->output_section == NULL) |
8560 | { | |
8561 | ret = 1; | |
8562 | break; | |
8563 | } | |
8564 | ||
8565 | if (h == NULL) | |
8566 | sym_value = sym->st_value; | |
8567 | else | |
8568 | { | |
8569 | if (h->root.type != bfd_link_hash_defined | |
8570 | && h->root.type != bfd_link_hash_defweak) | |
8571 | abort (); | |
8572 | sym_value = h->root.u.def.value; | |
8573 | } | |
8574 | sym_value += rel->r_addend; | |
8575 | ||
8576 | /* If this branch reloc uses an opd sym, find the code section. */ | |
8577 | opd_adjust = get_opd_info (sym_sec); | |
8578 | if (opd_adjust != NULL) | |
8579 | { | |
4c52953f AM |
8580 | if (h == NULL) |
8581 | { | |
8582 | long adjust; | |
8583 | ||
8584 | adjust = opd_adjust[sym->st_value / 8]; | |
8585 | if (adjust == -1) | |
8586 | /* Assume deleted functions won't ever be called. */ | |
8587 | continue; | |
8588 | sym_value += adjust; | |
8589 | } | |
8590 | ||
8591 | dest = opd_entry_value (sym_sec, sym_value, &sym_sec, NULL); | |
8592 | if (dest == (bfd_vma) -1) | |
8593 | continue; | |
8594 | } | |
8595 | else | |
8596 | dest = (sym_value | |
8597 | + sym_sec->output_offset | |
8598 | + sym_sec->output_section->vma); | |
8599 | ||
8600 | /* Ignore branch to self. */ | |
8601 | if (sym_sec == isec) | |
8602 | continue; | |
8603 | ||
8604 | /* If the called function uses the toc, we need a stub. */ | |
8605 | if (sym_sec->has_toc_reloc | |
8606 | || sym_sec->makes_toc_func_call) | |
8607 | { | |
8608 | ret = 1; | |
8609 | break; | |
8610 | } | |
8611 | ||
8612 | /* Assume any branch that needs a long branch stub might in fact | |
8613 | need a plt_branch stub. A plt_branch stub uses r2. */ | |
8614 | else if (dest - (isec->output_offset | |
8615 | + isec->output_section->vma | |
8616 | + rel->r_offset) + (1 << 25) >= (2 << 25)) | |
9b5ecbd0 AM |
8617 | { |
8618 | ret = 1; | |
8619 | break; | |
8620 | } | |
4c52953f AM |
8621 | |
8622 | /* If calling back to a section in the process of being tested, we | |
8623 | can't say for sure that no toc adjusting stubs are needed, so | |
8624 | don't return zero. */ | |
8625 | else if (sym_sec->call_check_in_progress) | |
8626 | ret = 2; | |
8627 | ||
8628 | /* Branches to another section that itself doesn't have any TOC | |
8629 | references are OK. Recursively call ourselves to check. */ | |
8630 | else if (sym_sec->id <= htab->top_id | |
8631 | && htab->stub_group[sym_sec->id].toc_off == 0) | |
8632 | { | |
8633 | int recur; | |
8634 | ||
8635 | /* Mark current section as indeterminate, so that other | |
8636 | sections that call back to current won't be marked as | |
8637 | known. */ | |
8638 | isec->call_check_in_progress = 1; | |
8639 | recur = toc_adjusting_stub_needed (info, sym_sec); | |
8640 | isec->call_check_in_progress = 0; | |
8641 | ||
8642 | if (recur < 0) | |
8643 | { | |
8644 | /* An error. Exit. */ | |
8645 | ret = -1; | |
8646 | break; | |
8647 | } | |
8648 | else if (recur <= 1) | |
8649 | { | |
8650 | /* Known result. Mark as checked and set section flag. */ | |
8651 | htab->stub_group[sym_sec->id].toc_off = 1; | |
8652 | if (recur != 0) | |
8653 | { | |
8654 | sym_sec->makes_toc_func_call = 1; | |
8655 | ret = 1; | |
8656 | break; | |
8657 | } | |
8658 | } | |
8659 | else | |
8660 | { | |
8661 | /* Unknown result. Continue checking. */ | |
8662 | ret = 2; | |
8663 | } | |
8664 | } | |
9b5ecbd0 AM |
8665 | } |
8666 | ||
4c52953f AM |
8667 | if (local_syms != NULL |
8668 | && (elf_tdata (isec->owner)->symtab_hdr.contents | |
8669 | != (unsigned char *) local_syms)) | |
8670 | free (local_syms); | |
8671 | if (elf_section_data (isec)->relocs != relstart) | |
8672 | free (relstart); | |
8673 | ||
9b5ecbd0 AM |
8674 | return ret; |
8675 | } | |
8676 | ||
721956f4 AM |
8677 | /* The linker repeatedly calls this function for each input section, |
8678 | in the order that input sections are linked into output sections. | |
8679 | Build lists of input sections to determine groupings between which | |
8680 | we may insert linker stubs. */ | |
8681 | ||
9b5ecbd0 | 8682 | bfd_boolean |
4ce794b7 | 8683 | ppc64_elf_next_input_section (struct bfd_link_info *info, asection *isec) |
721956f4 AM |
8684 | { |
8685 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
8686 | ||
734b6cf9 AM |
8687 | if ((isec->output_section->flags & SEC_CODE) != 0 |
8688 | && isec->output_section->index <= htab->top_index) | |
721956f4 | 8689 | { |
734b6cf9 | 8690 | asection **list = htab->input_list + isec->output_section->index; |
3d6f9012 | 8691 | /* Steal the link_sec pointer for our list. */ |
721956f4 | 8692 | #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec) |
3d6f9012 AM |
8693 | /* This happens to make the list in reverse order, |
8694 | which is what we want. */ | |
734b6cf9 AM |
8695 | PREV_SEC (isec) = *list; |
8696 | *list = isec; | |
721956f4 | 8697 | } |
ad8e1ba5 | 8698 | |
4c52953f | 8699 | if (htab->multi_toc_needed) |
9b5ecbd0 | 8700 | { |
4c52953f AM |
8701 | /* If a code section has a function that uses the TOC then we need |
8702 | to use the right TOC (obviously). Also, make sure that .opd gets | |
8703 | the correct TOC value for R_PPC64_TOC relocs that don't have or | |
8704 | can't find their function symbol (shouldn't ever happen now). */ | |
8705 | if (isec->has_toc_reloc || (isec->flags & SEC_CODE) == 0) | |
8706 | { | |
8707 | if (elf_gp (isec->owner) != 0) | |
8708 | htab->toc_curr = elf_gp (isec->owner); | |
8709 | } | |
8710 | else if (htab->stub_group[isec->id].toc_off == 0) | |
8711 | { | |
8712 | int ret = toc_adjusting_stub_needed (info, isec); | |
8713 | if (ret < 0) | |
8714 | return FALSE; | |
8715 | else | |
8716 | isec->makes_toc_func_call = ret & 1; | |
8717 | } | |
9b5ecbd0 | 8718 | } |
ad8e1ba5 AM |
8719 | |
8720 | /* Functions that don't use the TOC can belong in any TOC group. | |
8721 | Use the last TOC base. This happens to make _init and _fini | |
8722 | pasting work. */ | |
8723 | htab->stub_group[isec->id].toc_off = htab->toc_curr; | |
9b5ecbd0 | 8724 | return TRUE; |
721956f4 AM |
8725 | } |
8726 | ||
8727 | /* See whether we can group stub sections together. Grouping stub | |
8728 | sections may result in fewer stubs. More importantly, we need to | |
8729 | put all .init* and .fini* stubs at the beginning of the .init or | |
8730 | .fini output sections respectively, because glibc splits the | |
8731 | _init and _fini functions into multiple parts. Putting a stub in | |
8732 | the middle of a function is not a good idea. */ | |
8733 | ||
8734 | static void | |
4ce794b7 AM |
8735 | group_sections (struct ppc_link_hash_table *htab, |
8736 | bfd_size_type stub_group_size, | |
8737 | bfd_boolean stubs_always_before_branch) | |
721956f4 | 8738 | { |
734b6cf9 AM |
8739 | asection **list = htab->input_list + htab->top_index; |
8740 | do | |
721956f4 | 8741 | { |
734b6cf9 AM |
8742 | asection *tail = *list; |
8743 | while (tail != NULL) | |
721956f4 | 8744 | { |
734b6cf9 AM |
8745 | asection *curr; |
8746 | asection *prev; | |
8747 | bfd_size_type total; | |
8748 | bfd_boolean big_sec; | |
8749 | bfd_vma curr_toc; | |
8750 | ||
8751 | curr = tail; | |
eea6121a | 8752 | total = tail->size; |
734b6cf9 AM |
8753 | big_sec = total >= stub_group_size; |
8754 | curr_toc = htab->stub_group[tail->id].toc_off; | |
8755 | ||
8756 | while ((prev = PREV_SEC (curr)) != NULL | |
8757 | && ((total += curr->output_offset - prev->output_offset) | |
ad8e1ba5 AM |
8758 | < stub_group_size) |
8759 | && htab->stub_group[prev->id].toc_off == curr_toc) | |
734b6cf9 AM |
8760 | curr = prev; |
8761 | ||
8762 | /* OK, the size from the start of CURR to the end is less | |
8763 | than stub_group_size and thus can be handled by one stub | |
8764 | section. (or the tail section is itself larger than | |
8765 | stub_group_size, in which case we may be toast.) We | |
8766 | should really be keeping track of the total size of stubs | |
8767 | added here, as stubs contribute to the final output | |
8768 | section size. That's a little tricky, and this way will | |
8769 | only break if stubs added make the total size more than | |
8770 | 2^25, ie. for the default stub_group_size, if stubs total | |
8771 | more than 2097152 bytes, or nearly 75000 plt call stubs. */ | |
8772 | do | |
721956f4 AM |
8773 | { |
8774 | prev = PREV_SEC (tail); | |
734b6cf9 | 8775 | /* Set up this stub group. */ |
721956f4 AM |
8776 | htab->stub_group[tail->id].link_sec = curr; |
8777 | } | |
734b6cf9 AM |
8778 | while (tail != curr && (tail = prev) != NULL); |
8779 | ||
8780 | /* But wait, there's more! Input sections up to stub_group_size | |
8781 | bytes before the stub section can be handled by it too. | |
8782 | Don't do this if we have a really large section after the | |
8783 | stubs, as adding more stubs increases the chance that | |
8784 | branches may not reach into the stub section. */ | |
8785 | if (!stubs_always_before_branch && !big_sec) | |
8786 | { | |
8787 | total = 0; | |
8788 | while (prev != NULL | |
8789 | && ((total += tail->output_offset - prev->output_offset) | |
8790 | < stub_group_size) | |
8791 | && htab->stub_group[prev->id].toc_off == curr_toc) | |
8792 | { | |
8793 | tail = prev; | |
8794 | prev = PREV_SEC (tail); | |
8795 | htab->stub_group[tail->id].link_sec = curr; | |
8796 | } | |
8797 | } | |
8798 | tail = prev; | |
721956f4 AM |
8799 | } |
8800 | } | |
734b6cf9 AM |
8801 | while (list-- != htab->input_list); |
8802 | free (htab->input_list); | |
721956f4 AM |
8803 | #undef PREV_SEC |
8804 | } | |
8805 | ||
721956f4 AM |
8806 | /* Determine and set the size of the stub section for a final link. |
8807 | ||
8808 | The basic idea here is to examine all the relocations looking for | |
8809 | PC-relative calls to a target that is unreachable with a "bl" | |
8810 | instruction. */ | |
8811 | ||
b34976b6 | 8812 | bfd_boolean |
4ce794b7 | 8813 | ppc64_elf_size_stubs (bfd *output_bfd, |
4ce794b7 AM |
8814 | struct bfd_link_info *info, |
8815 | bfd_signed_vma group_size, | |
8816 | asection *(*add_stub_section) (const char *, asection *), | |
8817 | void (*layout_sections_again) (void)) | |
721956f4 AM |
8818 | { |
8819 | bfd_size_type stub_group_size; | |
b34976b6 | 8820 | bfd_boolean stubs_always_before_branch; |
721956f4 AM |
8821 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
8822 | ||
8823 | /* Stash our params away. */ | |
721956f4 AM |
8824 | htab->add_stub_section = add_stub_section; |
8825 | htab->layout_sections_again = layout_sections_again; | |
8826 | stubs_always_before_branch = group_size < 0; | |
8827 | if (group_size < 0) | |
8828 | stub_group_size = -group_size; | |
8829 | else | |
8830 | stub_group_size = group_size; | |
8831 | if (stub_group_size == 1) | |
8832 | { | |
8833 | /* Default values. */ | |
58ac9f71 AM |
8834 | if (stubs_always_before_branch) |
8835 | { | |
8836 | stub_group_size = 0x1e00000; | |
8837 | if (htab->has_14bit_branch) | |
8838 | stub_group_size = 0x7800; | |
8839 | } | |
8840 | else | |
8841 | { | |
8842 | stub_group_size = 0x1c00000; | |
8843 | if (htab->has_14bit_branch) | |
8844 | stub_group_size = 0x7000; | |
8845 | } | |
721956f4 AM |
8846 | } |
8847 | ||
8848 | group_sections (htab, stub_group_size, stubs_always_before_branch); | |
8849 | ||
721956f4 AM |
8850 | while (1) |
8851 | { | |
8852 | bfd *input_bfd; | |
8853 | unsigned int bfd_indx; | |
8854 | asection *stub_sec; | |
b34976b6 | 8855 | bfd_boolean stub_changed; |
721956f4 AM |
8856 | |
8857 | htab->stub_iteration += 1; | |
b34976b6 | 8858 | stub_changed = FALSE; |
721956f4 AM |
8859 | |
8860 | for (input_bfd = info->input_bfds, bfd_indx = 0; | |
8861 | input_bfd != NULL; | |
8862 | input_bfd = input_bfd->link_next, bfd_indx++) | |
8863 | { | |
8864 | Elf_Internal_Shdr *symtab_hdr; | |
8865 | asection *section; | |
6cdc0ccc | 8866 | Elf_Internal_Sym *local_syms = NULL; |
721956f4 AM |
8867 | |
8868 | /* We'll need the symbol table in a second. */ | |
8869 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
8870 | if (symtab_hdr->sh_info == 0) | |
8871 | continue; | |
8872 | ||
721956f4 AM |
8873 | /* Walk over each section attached to the input bfd. */ |
8874 | for (section = input_bfd->sections; | |
8875 | section != NULL; | |
8876 | section = section->next) | |
8877 | { | |
721956f4 | 8878 | Elf_Internal_Rela *internal_relocs, *irelaend, *irela; |
721956f4 AM |
8879 | |
8880 | /* If there aren't any relocs, then there's nothing more | |
8881 | to do. */ | |
8882 | if ((section->flags & SEC_RELOC) == 0 | |
8883 | || section->reloc_count == 0) | |
8884 | continue; | |
8885 | ||
8886 | /* If this section is a link-once section that will be | |
8887 | discarded, then don't create any stubs. */ | |
8888 | if (section->output_section == NULL | |
8889 | || section->output_section->owner != output_bfd) | |
8890 | continue; | |
8891 | ||
1e2f5b6e AM |
8892 | /* Get the relocs. */ |
8893 | internal_relocs | |
4ce794b7 | 8894 | = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL, |
45d6a902 | 8895 | info->keep_memory); |
721956f4 | 8896 | if (internal_relocs == NULL) |
1e2f5b6e | 8897 | goto error_ret_free_local; |
721956f4 AM |
8898 | |
8899 | /* Now examine each relocation. */ | |
8900 | irela = internal_relocs; | |
8901 | irelaend = irela + section->reloc_count; | |
8902 | for (; irela < irelaend; irela++) | |
8903 | { | |
4ce794b7 AM |
8904 | enum elf_ppc64_reloc_type r_type; |
8905 | unsigned int r_indx; | |
721956f4 AM |
8906 | enum ppc_stub_type stub_type; |
8907 | struct ppc_stub_hash_entry *stub_entry; | |
8387904d | 8908 | asection *sym_sec, *code_sec; |
721956f4 AM |
8909 | bfd_vma sym_value; |
8910 | bfd_vma destination; | |
8843416a | 8911 | bfd_boolean ok_dest; |
721956f4 | 8912 | struct ppc_link_hash_entry *hash; |
8387904d | 8913 | struct ppc_link_hash_entry *fdh; |
411e1bfb AM |
8914 | struct elf_link_hash_entry *h; |
8915 | Elf_Internal_Sym *sym; | |
721956f4 AM |
8916 | char *stub_name; |
8917 | const asection *id_sec; | |
8387904d | 8918 | long *opd_adjust; |
721956f4 AM |
8919 | |
8920 | r_type = ELF64_R_TYPE (irela->r_info); | |
8921 | r_indx = ELF64_R_SYM (irela->r_info); | |
8922 | ||
4ce794b7 | 8923 | if (r_type >= R_PPC64_max) |
721956f4 AM |
8924 | { |
8925 | bfd_set_error (bfd_error_bad_value); | |
6cdc0ccc | 8926 | goto error_ret_free_internal; |
721956f4 AM |
8927 | } |
8928 | ||
8929 | /* Only look for stubs on branch instructions. */ | |
4ce794b7 AM |
8930 | if (r_type != R_PPC64_REL24 |
8931 | && r_type != R_PPC64_REL14 | |
8932 | && r_type != R_PPC64_REL14_BRTAKEN | |
8933 | && r_type != R_PPC64_REL14_BRNTAKEN) | |
721956f4 AM |
8934 | continue; |
8935 | ||
8936 | /* Now determine the call target, its name, value, | |
8937 | section. */ | |
411e1bfb AM |
8938 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, |
8939 | r_indx, input_bfd)) | |
8940 | goto error_ret_free_internal; | |
8941 | hash = (struct ppc_link_hash_entry *) h; | |
8942 | ||
8843416a | 8943 | ok_dest = FALSE; |
8387904d | 8944 | fdh = NULL; |
411e1bfb | 8945 | if (hash == NULL) |
721956f4 | 8946 | { |
411e1bfb | 8947 | sym_value = sym->st_value; |
8843416a | 8948 | ok_dest = TRUE; |
721956f4 AM |
8949 | } |
8950 | else | |
8951 | { | |
411e1bfb | 8952 | sym_value = 0; |
99877b66 AM |
8953 | /* Recognise an old ABI func code entry sym, and |
8954 | use the func descriptor sym instead. */ | |
ceb1f1ef | 8955 | if (hash->elf.root.root.string[0] == '.' |
8387904d AM |
8956 | && (fdh = get_fdh (hash, htab)) != NULL) |
8957 | { | |
8387904d AM |
8958 | if (fdh->elf.root.type == bfd_link_hash_defined |
8959 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
8960 | { | |
8961 | sym_sec = fdh->elf.root.u.def.section; | |
8962 | sym_value = fdh->elf.root.u.def.value; | |
8963 | if (sym_sec->output_section != NULL) | |
8964 | ok_dest = TRUE; | |
8965 | } | |
99877b66 AM |
8966 | else |
8967 | fdh = NULL; | |
8387904d AM |
8968 | } |
8969 | else if (hash->elf.root.type == bfd_link_hash_defined | |
8970 | || hash->elf.root.type == bfd_link_hash_defweak) | |
721956f4 | 8971 | { |
721956f4 AM |
8972 | sym_value = hash->elf.root.u.def.value; |
8973 | if (sym_sec->output_section != NULL) | |
8843416a | 8974 | ok_dest = TRUE; |
721956f4 AM |
8975 | } |
8976 | else if (hash->elf.root.type == bfd_link_hash_undefweak) | |
8977 | ; | |
8978 | else if (hash->elf.root.type == bfd_link_hash_undefined) | |
8979 | ; | |
8980 | else | |
8981 | { | |
8982 | bfd_set_error (bfd_error_bad_value); | |
8983 | goto error_ret_free_internal; | |
8984 | } | |
8985 | } | |
8986 | ||
8843416a AM |
8987 | destination = 0; |
8988 | if (ok_dest) | |
8989 | { | |
8990 | sym_value += irela->r_addend; | |
8991 | destination = (sym_value | |
8992 | + sym_sec->output_offset | |
8993 | + sym_sec->output_section->vma); | |
8994 | } | |
8995 | ||
8387904d AM |
8996 | code_sec = sym_sec; |
8997 | opd_adjust = get_opd_info (sym_sec); | |
8998 | if (opd_adjust != NULL) | |
8999 | { | |
9000 | bfd_vma dest; | |
9001 | ||
9002 | if (hash == NULL) | |
9003 | { | |
3f764659 | 9004 | long adjust = opd_adjust[sym_value / 8]; |
8387904d AM |
9005 | if (adjust == -1) |
9006 | continue; | |
9007 | sym_value += adjust; | |
9008 | } | |
9009 | dest = opd_entry_value (sym_sec, sym_value, | |
9010 | &code_sec, &sym_value); | |
9011 | if (dest != (bfd_vma) -1) | |
9012 | { | |
9013 | destination = dest; | |
9014 | if (fdh != NULL) | |
9015 | { | |
9016 | /* Fixup old ABI sym to point at code | |
9017 | entry. */ | |
99877b66 | 9018 | hash->elf.root.type = bfd_link_hash_defweak; |
8387904d AM |
9019 | hash->elf.root.u.def.section = code_sec; |
9020 | hash->elf.root.u.def.value = sym_value; | |
9021 | } | |
9022 | } | |
9023 | } | |
9024 | ||
721956f4 AM |
9025 | /* Determine what (if any) linker stub is needed. */ |
9026 | stub_type = ppc_type_of_stub (section, irela, &hash, | |
9027 | destination); | |
ad8e1ba5 AM |
9028 | |
9029 | if (stub_type != ppc_stub_plt_call) | |
9030 | { | |
9031 | /* Check whether we need a TOC adjusting stub. | |
9032 | Since the linker pastes together pieces from | |
9033 | different object files when creating the | |
9034 | _init and _fini functions, it may be that a | |
9035 | call to what looks like a local sym is in | |
9036 | fact a call needing a TOC adjustment. */ | |
8387904d AM |
9037 | if (code_sec != NULL |
9038 | && code_sec->output_section != NULL | |
9039 | && (htab->stub_group[code_sec->id].toc_off | |
9b5ecbd0 | 9040 | != htab->stub_group[section->id].toc_off) |
4c52953f AM |
9041 | && (code_sec->has_toc_reloc |
9042 | || code_sec->makes_toc_func_call)) | |
ad8e1ba5 AM |
9043 | stub_type = ppc_stub_long_branch_r2off; |
9044 | } | |
9045 | ||
721956f4 AM |
9046 | if (stub_type == ppc_stub_none) |
9047 | continue; | |
9048 | ||
411e1bfb AM |
9049 | /* __tls_get_addr calls might be eliminated. */ |
9050 | if (stub_type != ppc_stub_plt_call | |
9051 | && hash != NULL | |
8387904d AM |
9052 | && (hash == htab->tls_get_addr |
9053 | || hash == htab->tls_get_addr_fd) | |
411e1bfb AM |
9054 | && section->has_tls_reloc |
9055 | && irela != internal_relocs) | |
9056 | { | |
9057 | /* Get tls info. */ | |
e7b938ca | 9058 | char *tls_mask; |
411e1bfb | 9059 | |
0d4792f7 | 9060 | if (!get_tls_mask (&tls_mask, NULL, &local_syms, |
411e1bfb AM |
9061 | irela - 1, input_bfd)) |
9062 | goto error_ret_free_internal; | |
e7b938ca | 9063 | if (*tls_mask != 0) |
411e1bfb AM |
9064 | continue; |
9065 | } | |
9066 | ||
721956f4 AM |
9067 | /* Support for grouping stub sections. */ |
9068 | id_sec = htab->stub_group[section->id].link_sec; | |
9069 | ||
9070 | /* Get the name of this stub. */ | |
9071 | stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela); | |
9072 | if (!stub_name) | |
9073 | goto error_ret_free_internal; | |
9074 | ||
9075 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, | |
b34976b6 | 9076 | stub_name, FALSE, FALSE); |
721956f4 AM |
9077 | if (stub_entry != NULL) |
9078 | { | |
9079 | /* The proper stub has already been created. */ | |
9080 | free (stub_name); | |
9081 | continue; | |
9082 | } | |
9083 | ||
9084 | stub_entry = ppc_add_stub (stub_name, section, htab); | |
9085 | if (stub_entry == NULL) | |
9086 | { | |
9087 | free (stub_name); | |
6cdc0ccc AM |
9088 | error_ret_free_internal: |
9089 | if (elf_section_data (section)->relocs == NULL) | |
9090 | free (internal_relocs); | |
9091 | error_ret_free_local: | |
9092 | if (local_syms != NULL | |
9093 | && (symtab_hdr->contents | |
9094 | != (unsigned char *) local_syms)) | |
9095 | free (local_syms); | |
b34976b6 | 9096 | return FALSE; |
721956f4 AM |
9097 | } |
9098 | ||
ad8e1ba5 | 9099 | stub_entry->stub_type = stub_type; |
721956f4 | 9100 | stub_entry->target_value = sym_value; |
8387904d | 9101 | stub_entry->target_section = code_sec; |
721956f4 | 9102 | stub_entry->h = hash; |
411e1bfb | 9103 | stub_entry->addend = irela->r_addend; |
ee75fd95 AM |
9104 | |
9105 | if (stub_entry->h != NULL) | |
9106 | htab->stub_globals += 1; | |
9107 | ||
b34976b6 | 9108 | stub_changed = TRUE; |
721956f4 AM |
9109 | } |
9110 | ||
9111 | /* We're done with the internal relocs, free them. */ | |
6cdc0ccc | 9112 | if (elf_section_data (section)->relocs != internal_relocs) |
1e2f5b6e | 9113 | free (internal_relocs); |
721956f4 | 9114 | } |
6cdc0ccc AM |
9115 | |
9116 | if (local_syms != NULL | |
9117 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
9118 | { | |
9119 | if (!info->keep_memory) | |
9120 | free (local_syms); | |
9121 | else | |
9122 | symtab_hdr->contents = (unsigned char *) local_syms; | |
9123 | } | |
721956f4 AM |
9124 | } |
9125 | ||
9126 | if (!stub_changed) | |
9127 | break; | |
9128 | ||
9129 | /* OK, we've added some stubs. Find out the new size of the | |
9130 | stub sections. */ | |
9131 | for (stub_sec = htab->stub_bfd->sections; | |
9132 | stub_sec != NULL; | |
9133 | stub_sec = stub_sec->next) | |
e717da7e | 9134 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) |
ee75fd95 AM |
9135 | { |
9136 | stub_sec->size = 0; | |
9137 | stub_sec->reloc_count = 0; | |
9138 | } | |
eea6121a AM |
9139 | |
9140 | htab->brlt->size = 0; | |
ee75fd95 | 9141 | if (htab->relbrlt != NULL) |
eea6121a | 9142 | htab->relbrlt->size = 0; |
721956f4 | 9143 | |
63bc6f6c | 9144 | bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, info); |
721956f4 AM |
9145 | |
9146 | /* Ask the linker to do its stuff. */ | |
9147 | (*htab->layout_sections_again) (); | |
9148 | } | |
9149 | ||
afbe61cf AM |
9150 | /* It would be nice to strip .branch_lt from the output if the |
9151 | section is empty, but it's too late. If we strip sections here, | |
9152 | the dynamic symbol table is corrupted since the section symbol | |
9153 | for the stripped section isn't written. */ | |
721956f4 | 9154 | |
b34976b6 | 9155 | return TRUE; |
721956f4 AM |
9156 | } |
9157 | ||
9158 | /* Called after we have determined section placement. If sections | |
805fc799 | 9159 | move, we'll be called again. Provide a value for TOCstart. */ |
721956f4 | 9160 | |
805fc799 | 9161 | bfd_vma |
4ce794b7 | 9162 | ppc64_elf_toc (bfd *obfd) |
721956f4 | 9163 | { |
805fc799 AM |
9164 | asection *s; |
9165 | bfd_vma TOCstart; | |
721956f4 | 9166 | |
805fc799 AM |
9167 | /* The TOC consists of sections .got, .toc, .tocbss, .plt in that |
9168 | order. The TOC starts where the first of these sections starts. */ | |
9169 | s = bfd_get_section_by_name (obfd, ".got"); | |
9170 | if (s == NULL) | |
9171 | s = bfd_get_section_by_name (obfd, ".toc"); | |
9172 | if (s == NULL) | |
9173 | s = bfd_get_section_by_name (obfd, ".tocbss"); | |
9174 | if (s == NULL) | |
9175 | s = bfd_get_section_by_name (obfd, ".plt"); | |
9176 | if (s == NULL) | |
9177 | { | |
9178 | /* This may happen for | |
9179 | o references to TOC base (SYM@toc / TOC[tc0]) without a | |
9180 | .toc directive | |
9181 | o bad linker script | |
9182 | o --gc-sections and empty TOC sections | |
9183 | ||
9184 | FIXME: Warn user? */ | |
9185 | ||
9186 | /* Look for a likely section. We probably won't even be | |
9187 | using TOCstart. */ | |
9188 | for (s = obfd->sections; s != NULL; s = s->next) | |
9189 | if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY)) | |
9190 | == (SEC_ALLOC | SEC_SMALL_DATA)) | |
9191 | break; | |
721956f4 | 9192 | if (s == NULL) |
805fc799 AM |
9193 | for (s = obfd->sections; s != NULL; s = s->next) |
9194 | if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA)) | |
9195 | == (SEC_ALLOC | SEC_SMALL_DATA)) | |
9196 | break; | |
721956f4 | 9197 | if (s == NULL) |
805fc799 AM |
9198 | for (s = obfd->sections; s != NULL; s = s->next) |
9199 | if ((s->flags & (SEC_ALLOC | SEC_READONLY)) == SEC_ALLOC) | |
9200 | break; | |
721956f4 | 9201 | if (s == NULL) |
805fc799 AM |
9202 | for (s = obfd->sections; s != NULL; s = s->next) |
9203 | if ((s->flags & SEC_ALLOC) == SEC_ALLOC) | |
9204 | break; | |
9205 | } | |
721956f4 | 9206 | |
805fc799 AM |
9207 | TOCstart = 0; |
9208 | if (s != NULL) | |
9209 | TOCstart = s->output_section->vma + s->output_offset; | |
721956f4 | 9210 | |
805fc799 | 9211 | return TOCstart; |
721956f4 AM |
9212 | } |
9213 | ||
9214 | /* Build all the stubs associated with the current output file. | |
9215 | The stubs are kept in a hash table attached to the main linker | |
9216 | hash table. This function is called via gldelf64ppc_finish. */ | |
9217 | ||
b34976b6 | 9218 | bfd_boolean |
4ce794b7 AM |
9219 | ppc64_elf_build_stubs (bfd_boolean emit_stub_syms, |
9220 | struct bfd_link_info *info, | |
9221 | char **stats) | |
5d1634d7 AM |
9222 | { |
9223 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
721956f4 | 9224 | asection *stub_sec; |
5d1634d7 | 9225 | bfd_byte *p; |
e717da7e | 9226 | int stub_sec_count = 0; |
5d1634d7 | 9227 | |
ad8e1ba5 | 9228 | htab->emit_stub_syms = emit_stub_syms; |
eea6121a AM |
9229 | |
9230 | /* Allocate memory to hold the linker stubs. */ | |
721956f4 AM |
9231 | for (stub_sec = htab->stub_bfd->sections; |
9232 | stub_sec != NULL; | |
9233 | stub_sec = stub_sec->next) | |
eea6121a AM |
9234 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0 |
9235 | && stub_sec->size != 0) | |
e717da7e | 9236 | { |
eea6121a AM |
9237 | stub_sec->contents = bfd_zalloc (htab->stub_bfd, stub_sec->size); |
9238 | if (stub_sec->contents == NULL) | |
9239 | return FALSE; | |
9240 | /* We want to check that built size is the same as calculated | |
9241 | size. rawsize is a convenient location to use. */ | |
9242 | stub_sec->rawsize = stub_sec->size; | |
9243 | stub_sec->size = 0; | |
e717da7e | 9244 | } |
5d1634d7 | 9245 | |
4ce794b7 | 9246 | if (htab->plt != NULL) |
5d1634d7 | 9247 | { |
9f951329 | 9248 | unsigned int indx; |
ad8e1ba5 | 9249 | bfd_vma plt0; |
9f951329 | 9250 | |
721956f4 | 9251 | /* Build the .glink plt call stub. */ |
4ce794b7 AM |
9252 | plt0 = (htab->plt->output_section->vma |
9253 | + htab->plt->output_offset | |
9254 | - (htab->glink->output_section->vma | |
9255 | + htab->glink->output_offset | |
ad8e1ba5 AM |
9256 | + GLINK_CALL_STUB_SIZE)); |
9257 | if (plt0 + 0x80008000 > 0xffffffff) | |
721956f4 | 9258 | { |
ad8e1ba5 AM |
9259 | (*_bfd_error_handler) (_(".glink and .plt too far apart")); |
9260 | bfd_set_error (bfd_error_bad_value); | |
9261 | return FALSE; | |
721956f4 | 9262 | } |
721956f4 | 9263 | |
97b639ba AM |
9264 | if (htab->emit_stub_syms) |
9265 | { | |
9266 | struct elf_link_hash_entry *h; | |
9267 | h = elf_link_hash_lookup (&htab->elf, "__glink", TRUE, FALSE, FALSE); | |
9268 | if (h == NULL) | |
9269 | return FALSE; | |
9270 | if (h->root.type == bfd_link_hash_new) | |
9271 | { | |
9272 | h->root.type = bfd_link_hash_defined; | |
9273 | h->root.u.def.section = htab->glink; | |
9274 | h->root.u.def.value = 0; | |
f5385ebf AM |
9275 | h->ref_regular = 1; |
9276 | h->def_regular = 1; | |
9277 | h->ref_regular_nonweak = 1; | |
9278 | h->forced_local = 1; | |
9279 | h->non_elf = 0; | |
97b639ba AM |
9280 | } |
9281 | } | |
4ce794b7 AM |
9282 | p = htab->glink->contents; |
9283 | bfd_put_32 (htab->glink->owner, MFCTR_R12, p); | |
ad8e1ba5 | 9284 | p += 4; |
4ce794b7 | 9285 | bfd_put_32 (htab->glink->owner, SLDI_R11_R0_3, p); |
ad8e1ba5 | 9286 | p += 4; |
4ce794b7 | 9287 | bfd_put_32 (htab->glink->owner, ADDIC_R2_R0_32K, p); |
ad8e1ba5 | 9288 | p += 4; |
4ce794b7 | 9289 | bfd_put_32 (htab->glink->owner, SUB_R12_R12_R11, p); |
ad8e1ba5 | 9290 | p += 4; |
4ce794b7 | 9291 | bfd_put_32 (htab->glink->owner, SRADI_R2_R2_63, p); |
ad8e1ba5 | 9292 | p += 4; |
4ce794b7 | 9293 | bfd_put_32 (htab->glink->owner, SLDI_R11_R0_2, p); |
ad8e1ba5 | 9294 | p += 4; |
4ce794b7 | 9295 | bfd_put_32 (htab->glink->owner, AND_R2_R2_R11, p); |
ad8e1ba5 | 9296 | p += 4; |
4ce794b7 | 9297 | bfd_put_32 (htab->glink->owner, SUB_R12_R12_R11, p); |
ad8e1ba5 | 9298 | p += 4; |
4ce794b7 | 9299 | bfd_put_32 (htab->glink->owner, ADD_R12_R12_R2, p); |
ad8e1ba5 | 9300 | p += 4; |
4ce794b7 | 9301 | bfd_put_32 (htab->glink->owner, ADDIS_R12_R12 | PPC_HA (plt0), p); |
ad8e1ba5 | 9302 | p += 4; |
4ce794b7 | 9303 | bfd_put_32 (htab->glink->owner, LD_R11_0R12 | PPC_LO (plt0), p); |
ad8e1ba5 | 9304 | p += 4; |
4ce794b7 | 9305 | bfd_put_32 (htab->glink->owner, ADDI_R12_R12 | PPC_LO (plt0), p); |
ad8e1ba5 | 9306 | p += 4; |
4ce794b7 | 9307 | bfd_put_32 (htab->glink->owner, LD_R2_0R12 | 8, p); |
ad8e1ba5 | 9308 | p += 4; |
4ce794b7 | 9309 | bfd_put_32 (htab->glink->owner, MTCTR_R11, p); |
ad8e1ba5 | 9310 | p += 4; |
4ce794b7 | 9311 | bfd_put_32 (htab->glink->owner, LD_R11_0R12 | 16, p); |
ad8e1ba5 | 9312 | p += 4; |
4ce794b7 | 9313 | bfd_put_32 (htab->glink->owner, BCTR, p); |
ad8e1ba5 AM |
9314 | p += 4; |
9315 | ||
9f951329 AM |
9316 | /* Build the .glink lazy link call stubs. */ |
9317 | indx = 0; | |
eea6121a | 9318 | while (p < htab->glink->contents + htab->glink->size) |
9f951329 AM |
9319 | { |
9320 | if (indx < 0x8000) | |
9321 | { | |
4ce794b7 | 9322 | bfd_put_32 (htab->glink->owner, LI_R0_0 | indx, p); |
9f951329 AM |
9323 | p += 4; |
9324 | } | |
9325 | else | |
9326 | { | |
4ce794b7 | 9327 | bfd_put_32 (htab->glink->owner, LIS_R0_0 | PPC_HI (indx), p); |
9f951329 | 9328 | p += 4; |
4ce794b7 | 9329 | bfd_put_32 (htab->glink->owner, ORI_R0_R0_0 | PPC_LO (indx), p); |
9f951329 AM |
9330 | p += 4; |
9331 | } | |
4ce794b7 AM |
9332 | bfd_put_32 (htab->glink->owner, |
9333 | B_DOT | ((htab->glink->contents - p) & 0x3fffffc), p); | |
a16d5acb | 9334 | indx++; |
9f951329 AM |
9335 | p += 4; |
9336 | } | |
eea6121a | 9337 | htab->glink->rawsize = p - htab->glink->contents; |
5d1634d7 | 9338 | } |
5d1634d7 | 9339 | |
eea6121a | 9340 | if (htab->brlt->size != 0) |
721956f4 | 9341 | { |
4ce794b7 | 9342 | htab->brlt->contents = bfd_zalloc (htab->brlt->owner, |
eea6121a | 9343 | htab->brlt->size); |
4ce794b7 | 9344 | if (htab->brlt->contents == NULL) |
b34976b6 | 9345 | return FALSE; |
721956f4 | 9346 | } |
ee75fd95 | 9347 | if (htab->relbrlt != NULL && htab->relbrlt->size != 0) |
63bc6f6c AM |
9348 | { |
9349 | htab->relbrlt->contents = bfd_zalloc (htab->relbrlt->owner, | |
eea6121a | 9350 | htab->relbrlt->size); |
63bc6f6c AM |
9351 | if (htab->relbrlt->contents == NULL) |
9352 | return FALSE; | |
9353 | } | |
5d1634d7 | 9354 | |
721956f4 AM |
9355 | /* Build the stubs as directed by the stub hash table. */ |
9356 | bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info); | |
5d1634d7 | 9357 | |
721956f4 AM |
9358 | for (stub_sec = htab->stub_bfd->sections; |
9359 | stub_sec != NULL; | |
9360 | stub_sec = stub_sec->next) | |
e717da7e AM |
9361 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) |
9362 | { | |
9363 | stub_sec_count += 1; | |
eea6121a | 9364 | if (stub_sec->rawsize != stub_sec->size) |
e717da7e AM |
9365 | break; |
9366 | } | |
5d1634d7 | 9367 | |
721956f4 | 9368 | if (stub_sec != NULL |
eea6121a | 9369 | || htab->glink->rawsize != htab->glink->size) |
5d1634d7 | 9370 | { |
b34976b6 | 9371 | htab->stub_error = TRUE; |
721956f4 | 9372 | (*_bfd_error_handler) (_("stubs don't match calculated size")); |
5d1634d7 | 9373 | } |
721956f4 | 9374 | |
d2a300cf AM |
9375 | if (htab->stub_error) |
9376 | return FALSE; | |
9377 | ||
9378 | if (stats != NULL) | |
9379 | { | |
9380 | *stats = bfd_malloc (500); | |
9381 | if (*stats == NULL) | |
9382 | return FALSE; | |
9383 | ||
ee75fd95 | 9384 | sprintf (*stats, _("linker stubs in %u group%s\n" |
d2a300cf AM |
9385 | " branch %lu\n" |
9386 | " toc adjust %lu\n" | |
9387 | " long branch %lu\n" | |
9388 | " long toc adj %lu\n" | |
9389 | " plt call %lu"), | |
e717da7e | 9390 | stub_sec_count, |
ee75fd95 | 9391 | stub_sec_count == 1 ? "" : "s", |
4ce794b7 AM |
9392 | htab->stub_count[ppc_stub_long_branch - 1], |
9393 | htab->stub_count[ppc_stub_long_branch_r2off - 1], | |
9394 | htab->stub_count[ppc_stub_plt_branch - 1], | |
9395 | htab->stub_count[ppc_stub_plt_branch_r2off - 1], | |
9396 | htab->stub_count[ppc_stub_plt_call - 1]); | |
d2a300cf AM |
9397 | } |
9398 | return TRUE; | |
5bd4f169 AM |
9399 | } |
9400 | ||
99877b66 AM |
9401 | /* This function undoes the changes made by add_symbol_adjust. */ |
9402 | ||
9403 | static bfd_boolean | |
9404 | undo_symbol_twiddle (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED) | |
9405 | { | |
9406 | struct ppc_link_hash_entry *eh; | |
9407 | ||
9408 | if (h->root.type == bfd_link_hash_indirect) | |
9409 | return TRUE; | |
9410 | ||
9411 | if (h->root.type == bfd_link_hash_warning) | |
9412 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
9413 | ||
9414 | eh = (struct ppc_link_hash_entry *) h; | |
9415 | if (eh->elf.root.type != bfd_link_hash_undefweak || !eh->was_undefined) | |
9416 | return TRUE; | |
9417 | ||
9418 | eh->elf.root.type = bfd_link_hash_undefined; | |
9419 | return TRUE; | |
9420 | } | |
9421 | ||
9422 | void | |
9423 | ppc64_elf_restore_symbols (struct bfd_link_info *info) | |
9424 | { | |
9425 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
9426 | elf_link_hash_traverse (&htab->elf, undo_symbol_twiddle, info); | |
9427 | } | |
9428 | ||
5bd4f169 AM |
9429 | /* The RELOCATE_SECTION function is called by the ELF backend linker |
9430 | to handle the relocations for a section. | |
9431 | ||
9432 | The relocs are always passed as Rela structures; if the section | |
9433 | actually uses Rel structures, the r_addend field will always be | |
9434 | zero. | |
9435 | ||
9436 | This function is responsible for adjust the section contents as | |
9437 | necessary, and (if using Rela relocs and generating a | |
1049f94e | 9438 | relocatable output file) adjusting the reloc addend as |
5bd4f169 AM |
9439 | necessary. |
9440 | ||
9441 | This function does not have to worry about setting the reloc | |
9442 | address or the reloc symbol index. | |
9443 | ||
9444 | LOCAL_SYMS is a pointer to the swapped in local symbols. | |
9445 | ||
9446 | LOCAL_SECTIONS is an array giving the section in the input file | |
9447 | corresponding to the st_shndx field of each local symbol. | |
9448 | ||
9449 | The global hash table entry for the global symbols can be found | |
9450 | via elf_sym_hashes (input_bfd). | |
9451 | ||
1049f94e | 9452 | When generating relocatable output, this function must handle |
5bd4f169 AM |
9453 | STB_LOCAL/STT_SECTION symbols specially. The output symbol is |
9454 | going to be the section symbol corresponding to the output | |
9455 | section, which means that the addend must be adjusted | |
9456 | accordingly. */ | |
9457 | ||
b34976b6 | 9458 | static bfd_boolean |
4ce794b7 AM |
9459 | ppc64_elf_relocate_section (bfd *output_bfd, |
9460 | struct bfd_link_info *info, | |
9461 | bfd *input_bfd, | |
9462 | asection *input_section, | |
9463 | bfd_byte *contents, | |
9464 | Elf_Internal_Rela *relocs, | |
9465 | Elf_Internal_Sym *local_syms, | |
9466 | asection **local_sections) | |
5bd4f169 | 9467 | { |
65f38f15 | 9468 | struct ppc_link_hash_table *htab; |
5bd4f169 AM |
9469 | Elf_Internal_Shdr *symtab_hdr; |
9470 | struct elf_link_hash_entry **sym_hashes; | |
5bd4f169 AM |
9471 | Elf_Internal_Rela *rel; |
9472 | Elf_Internal_Rela *relend; | |
411e1bfb AM |
9473 | Elf_Internal_Rela outrel; |
9474 | bfd_byte *loc; | |
411e1bfb | 9475 | struct got_entry **local_got_ents; |
5bd4f169 | 9476 | bfd_vma TOCstart; |
b34976b6 AM |
9477 | bfd_boolean ret = TRUE; |
9478 | bfd_boolean is_opd; | |
96e0dda4 | 9479 | /* Disabled until we sort out how ld should choose 'y' vs 'at'. */ |
b34976b6 | 9480 | bfd_boolean is_power4 = FALSE; |
5bd4f169 | 9481 | |
1049f94e | 9482 | if (info->relocatable) |
b34976b6 | 9483 | return TRUE; |
b491616a | 9484 | |
65f38f15 | 9485 | /* Initialize howto table if needed. */ |
5bd4f169 | 9486 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) |
5bd4f169 AM |
9487 | ppc_howto_init (); |
9488 | ||
65f38f15 | 9489 | htab = ppc_hash_table (info); |
ee75fd95 AM |
9490 | |
9491 | /* Don't relocate stub sections. */ | |
9492 | if (input_section->owner == htab->stub_bfd) | |
9493 | return TRUE; | |
9494 | ||
411e1bfb | 9495 | local_got_ents = elf_local_got_ents (input_bfd); |
5bd4f169 | 9496 | TOCstart = elf_gp (output_bfd); |
5bd4f169 AM |
9497 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; |
9498 | sym_hashes = elf_sym_hashes (input_bfd); | |
f0abc2a1 | 9499 | is_opd = ppc64_elf_section_data (input_section)->opd.adjust != NULL; |
65f38f15 | 9500 | |
5bd4f169 AM |
9501 | rel = relocs; |
9502 | relend = relocs + input_section->reloc_count; | |
9503 | for (; rel < relend; rel++) | |
9504 | { | |
04c9666a | 9505 | enum elf_ppc64_reloc_type r_type; |
5bd4f169 AM |
9506 | bfd_vma addend; |
9507 | bfd_reloc_status_type r; | |
9508 | Elf_Internal_Sym *sym; | |
9509 | asection *sec; | |
039b3fef AM |
9510 | struct elf_link_hash_entry *h_elf; |
9511 | struct ppc_link_hash_entry *h; | |
9512 | struct ppc_link_hash_entry *fdh; | |
5bd4f169 | 9513 | const char *sym_name; |
0d4792f7 | 9514 | unsigned long r_symndx, toc_symndx; |
951fd09b | 9515 | char tls_mask, tls_gd, tls_type; |
0d4792f7 | 9516 | char sym_type; |
5bd4f169 | 9517 | bfd_vma relocation; |
b34976b6 AM |
9518 | bfd_boolean unresolved_reloc; |
9519 | bfd_boolean warned; | |
50bc7936 | 9520 | unsigned long insn, mask; |
721956f4 AM |
9521 | struct ppc_stub_hash_entry *stub_entry; |
9522 | bfd_vma max_br_offset; | |
9523 | bfd_vma from; | |
5bd4f169 | 9524 | |
4ce794b7 | 9525 | r_type = ELF64_R_TYPE (rel->r_info); |
5bd4f169 | 9526 | r_symndx = ELF64_R_SYM (rel->r_info); |
ee87f2da AM |
9527 | |
9528 | /* For old style R_PPC64_TOC relocs with a zero symbol, use the | |
9529 | symbol of the previous ADDR64 reloc. The symbol gives us the | |
9530 | proper TOC base to use. */ | |
9531 | if (rel->r_info == ELF64_R_INFO (0, R_PPC64_TOC) | |
9532 | && rel != relocs | |
9533 | && ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_ADDR64 | |
9534 | && is_opd) | |
9535 | r_symndx = ELF64_R_SYM (rel[-1].r_info); | |
9536 | ||
4ce794b7 AM |
9537 | sym = NULL; |
9538 | sec = NULL; | |
039b3fef | 9539 | h_elf = NULL; |
4ce794b7 | 9540 | sym_name = NULL; |
b34976b6 AM |
9541 | unresolved_reloc = FALSE; |
9542 | warned = FALSE; | |
65f38f15 | 9543 | |
0b13192e | 9544 | if (r_symndx < symtab_hdr->sh_info) |
5bd4f169 AM |
9545 | { |
9546 | /* It's a local symbol. */ | |
4025353c AM |
9547 | long *opd_adjust; |
9548 | ||
5bd4f169 AM |
9549 | sym = local_syms + r_symndx; |
9550 | sec = local_sections[r_symndx]; | |
26c61ae5 | 9551 | sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec); |
0d4792f7 | 9552 | sym_type = ELF64_ST_TYPE (sym->st_info); |
8517fae7 | 9553 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); |
4025353c AM |
9554 | opd_adjust = get_opd_info (sec); |
9555 | if (opd_adjust != NULL) | |
1e2f5b6e | 9556 | { |
3f764659 | 9557 | long adjust = opd_adjust[(sym->st_value + rel->r_addend) / 8]; |
4025353c AM |
9558 | if (adjust == -1) |
9559 | relocation = 0; | |
9560 | else | |
9561 | relocation += adjust; | |
1e2f5b6e | 9562 | } |
5bd4f169 AM |
9563 | } |
9564 | else | |
9565 | { | |
b2a8e766 AM |
9566 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
9567 | r_symndx, symtab_hdr, sym_hashes, | |
039b3fef | 9568 | h_elf, sec, relocation, |
b2a8e766 | 9569 | unresolved_reloc, warned); |
039b3fef AM |
9570 | sym_name = h_elf->root.root.string; |
9571 | sym_type = h_elf->type; | |
5bd4f169 | 9572 | } |
039b3fef | 9573 | h = (struct ppc_link_hash_entry *) h_elf; |
5bd4f169 | 9574 | |
951fd09b AM |
9575 | /* TLS optimizations. Replace instruction sequences and relocs |
9576 | based on information we collected in tls_optimize. We edit | |
9577 | RELOCS so that --emit-relocs will output something sensible | |
9578 | for the final instruction stream. */ | |
9579 | tls_mask = 0; | |
9580 | tls_gd = 0; | |
0d4792f7 | 9581 | toc_symndx = 0; |
d881513a | 9582 | if (IS_PPC64_TLS_RELOC (r_type)) |
411e1bfb AM |
9583 | { |
9584 | if (h != NULL) | |
039b3fef | 9585 | tls_mask = h->tls_mask; |
411e1bfb AM |
9586 | else if (local_got_ents != NULL) |
9587 | { | |
e7b938ca AM |
9588 | char *lgot_masks; |
9589 | lgot_masks = (char *) (local_got_ents + symtab_hdr->sh_info); | |
9590 | tls_mask = lgot_masks[r_symndx]; | |
411e1bfb | 9591 | } |
0d4792f7 AM |
9592 | if (tls_mask == 0 && r_type == R_PPC64_TLS) |
9593 | { | |
9594 | /* Check for toc tls entries. */ | |
9595 | char *toc_tls; | |
9596 | ||
9597 | if (!get_tls_mask (&toc_tls, &toc_symndx, &local_syms, | |
9598 | rel, input_bfd)) | |
9599 | return FALSE; | |
9600 | ||
9601 | if (toc_tls) | |
9602 | tls_mask = *toc_tls; | |
9603 | } | |
9604 | } | |
9605 | ||
9606 | /* Check that tls relocs are used with tls syms, and non-tls | |
9607 | relocs are used with non-tls syms. */ | |
9608 | if (r_symndx != 0 | |
9609 | && r_type != R_PPC64_NONE | |
9610 | && (h == NULL | |
039b3fef AM |
9611 | || h->elf.root.type == bfd_link_hash_defined |
9612 | || h->elf.root.type == bfd_link_hash_defweak) | |
0d4792f7 AM |
9613 | && IS_PPC64_TLS_RELOC (r_type) != (sym_type == STT_TLS)) |
9614 | { | |
9615 | if (r_type == R_PPC64_TLS && tls_mask != 0) | |
9616 | /* R_PPC64_TLS is OK against a symbol in the TOC. */ | |
9617 | ; | |
9618 | else | |
9619 | (*_bfd_error_handler) | |
9620 | (sym_type == STT_TLS | |
d003868e AM |
9621 | ? _("%B(%A+0x%lx): %s used with TLS symbol %s") |
9622 | : _("%B(%A+0x%lx): %s used with non-TLS symbol %s"), | |
9623 | input_bfd, | |
9624 | input_section, | |
0d4792f7 AM |
9625 | (long) rel->r_offset, |
9626 | ppc64_elf_howto_table[r_type]->name, | |
9627 | sym_name); | |
411e1bfb AM |
9628 | } |
9629 | ||
9630 | /* Ensure reloc mapping code below stays sane. */ | |
9631 | if (R_PPC64_TOC16_LO_DS != R_PPC64_TOC16_DS + 1 | |
9632 | || R_PPC64_TOC16_LO != R_PPC64_TOC16 + 1 | |
9633 | || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TLSGD16 & 3) | |
9634 | || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TLSGD16_LO & 3) | |
9635 | || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TLSGD16_HI & 3) | |
9636 | || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TLSGD16_HA & 3) | |
9637 | || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TPREL16_DS & 3) | |
9638 | || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TPREL16_LO_DS & 3) | |
9639 | || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TPREL16_HI & 3) | |
9640 | || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TPREL16_HA & 3)) | |
9641 | abort (); | |
0d4792f7 | 9642 | |
411e1bfb AM |
9643 | switch (r_type) |
9644 | { | |
9645 | default: | |
411e1bfb AM |
9646 | break; |
9647 | ||
9648 | case R_PPC64_TOC16: | |
9649 | case R_PPC64_TOC16_LO: | |
9650 | case R_PPC64_TOC16_DS: | |
9651 | case R_PPC64_TOC16_LO_DS: | |
411e1bfb AM |
9652 | { |
9653 | /* Check for toc tls entries. */ | |
9654 | char *toc_tls; | |
951fd09b | 9655 | int retval; |
411e1bfb | 9656 | |
0d4792f7 AM |
9657 | retval = get_tls_mask (&toc_tls, &toc_symndx, &local_syms, |
9658 | rel, input_bfd); | |
951fd09b | 9659 | if (retval == 0) |
411e1bfb AM |
9660 | return FALSE; |
9661 | ||
9662 | if (toc_tls) | |
9663 | { | |
951fd09b | 9664 | tls_mask = *toc_tls; |
411e1bfb AM |
9665 | if (r_type == R_PPC64_TOC16_DS |
9666 | || r_type == R_PPC64_TOC16_LO_DS) | |
81407a69 AM |
9667 | { |
9668 | if (tls_mask != 0 | |
9669 | && (tls_mask & (TLS_DTPREL | TLS_TPREL)) == 0) | |
9670 | goto toctprel; | |
9671 | } | |
411e1bfb | 9672 | else |
951fd09b AM |
9673 | { |
9674 | /* If we found a GD reloc pair, then we might be | |
9675 | doing a GD->IE transition. */ | |
9676 | if (retval == 2) | |
9677 | { | |
9678 | tls_gd = TLS_TPRELGD; | |
9679 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
9680 | goto tls_get_addr_check; | |
9681 | } | |
9682 | else if (retval == 3) | |
9683 | { | |
9684 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) | |
9685 | goto tls_get_addr_check; | |
9686 | } | |
9687 | } | |
411e1bfb AM |
9688 | } |
9689 | } | |
9690 | break; | |
9691 | ||
9692 | case R_PPC64_GOT_TPREL16_DS: | |
9693 | case R_PPC64_GOT_TPREL16_LO_DS: | |
951fd09b AM |
9694 | if (tls_mask != 0 |
9695 | && (tls_mask & TLS_TPREL) == 0) | |
411e1bfb | 9696 | { |
81407a69 | 9697 | toctprel: |
411e1bfb AM |
9698 | insn = bfd_get_32 (output_bfd, contents + rel->r_offset - 2); |
9699 | insn &= 31 << 21; | |
9700 | insn |= 0x3c0d0000; /* addis 0,13,0 */ | |
9701 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset - 2); | |
9702 | r_type = R_PPC64_TPREL16_HA; | |
0d4792f7 AM |
9703 | if (toc_symndx != 0) |
9704 | { | |
9705 | rel->r_info = ELF64_R_INFO (toc_symndx, r_type); | |
9706 | /* We changed the symbol. Start over in order to | |
9707 | get h, sym, sec etc. right. */ | |
9708 | rel--; | |
9709 | continue; | |
9710 | } | |
9711 | else | |
9712 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
411e1bfb AM |
9713 | } |
9714 | break; | |
9715 | ||
9716 | case R_PPC64_TLS: | |
951fd09b AM |
9717 | if (tls_mask != 0 |
9718 | && (tls_mask & TLS_TPREL) == 0) | |
411e1bfb | 9719 | { |
50bc7936 | 9720 | bfd_vma rtra; |
411e1bfb | 9721 | insn = bfd_get_32 (output_bfd, contents + rel->r_offset); |
772119ce | 9722 | if ((insn & ((0x3f << 26) | (31 << 11))) |
411e1bfb AM |
9723 | == ((31 << 26) | (13 << 11))) |
9724 | rtra = insn & ((1 << 26) - (1 << 16)); | |
772119ce | 9725 | else if ((insn & ((0x3f << 26) | (31 << 16))) |
411e1bfb AM |
9726 | == ((31 << 26) | (13 << 16))) |
9727 | rtra = (insn & (31 << 21)) | ((insn & (31 << 11)) << 5); | |
9728 | else | |
9729 | abort (); | |
9730 | if ((insn & ((1 << 11) - (1 << 1))) == 266 << 1) | |
9731 | /* add -> addi. */ | |
9732 | insn = 14 << 26; | |
9733 | else if ((insn & (31 << 1)) == 23 << 1 | |
9734 | && ((insn & (31 << 6)) < 14 << 6 | |
9735 | || ((insn & (31 << 6)) >= 16 << 6 | |
9736 | && (insn & (31 << 6)) < 24 << 6))) | |
9737 | /* load and store indexed -> dform. */ | |
9738 | insn = (32 | ((insn >> 6) & 31)) << 26; | |
9739 | else if ((insn & (31 << 1)) == 21 << 1 | |
9740 | && (insn & (0x1a << 6)) == 0) | |
9741 | /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */ | |
9742 | insn = (((58 | ((insn >> 6) & 4)) << 26) | |
9743 | | ((insn >> 6) & 1)); | |
9744 | else if ((insn & (31 << 1)) == 21 << 1 | |
9745 | && (insn & ((1 << 11) - (1 << 1))) == 341 << 1) | |
9746 | /* lwax -> lwa. */ | |
9747 | insn = (58 << 26) | 2; | |
9748 | else | |
9749 | abort (); | |
9750 | insn |= rtra; | |
9751 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset); | |
411e1bfb AM |
9752 | /* Was PPC64_TLS which sits on insn boundary, now |
9753 | PPC64_TPREL16_LO which is at insn+2. */ | |
9754 | rel->r_offset += 2; | |
0d4792f7 AM |
9755 | r_type = R_PPC64_TPREL16_LO; |
9756 | if (toc_symndx != 0) | |
9757 | { | |
9758 | rel->r_info = ELF64_R_INFO (toc_symndx, r_type); | |
9759 | /* We changed the symbol. Start over in order to | |
9760 | get h, sym, sec etc. right. */ | |
9761 | rel--; | |
9762 | continue; | |
9763 | } | |
9764 | else | |
9765 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
411e1bfb AM |
9766 | } |
9767 | break; | |
9768 | ||
411e1bfb AM |
9769 | case R_PPC64_GOT_TLSGD16_HI: |
9770 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b AM |
9771 | tls_gd = TLS_TPRELGD; |
9772 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
9773 | goto tls_gdld_hi; | |
9774 | break; | |
9775 | ||
411e1bfb AM |
9776 | case R_PPC64_GOT_TLSLD16_HI: |
9777 | case R_PPC64_GOT_TLSLD16_HA: | |
951fd09b | 9778 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) |
411e1bfb | 9779 | { |
951fd09b AM |
9780 | tls_gdld_hi: |
9781 | if ((tls_mask & tls_gd) != 0) | |
9782 | r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3) | |
9783 | + R_PPC64_GOT_TPREL16_DS); | |
9784 | else | |
411e1bfb | 9785 | { |
951fd09b AM |
9786 | bfd_put_32 (output_bfd, NOP, contents + rel->r_offset); |
9787 | rel->r_offset -= 2; | |
9788 | r_type = R_PPC64_NONE; | |
411e1bfb | 9789 | } |
951fd09b | 9790 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); |
411e1bfb AM |
9791 | } |
9792 | break; | |
9793 | ||
951fd09b AM |
9794 | case R_PPC64_GOT_TLSGD16: |
9795 | case R_PPC64_GOT_TLSGD16_LO: | |
9796 | tls_gd = TLS_TPRELGD; | |
9797 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
9798 | goto tls_get_addr_check; | |
9799 | break; | |
411e1bfb | 9800 | |
951fd09b AM |
9801 | case R_PPC64_GOT_TLSLD16: |
9802 | case R_PPC64_GOT_TLSLD16_LO: | |
9803 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) | |
9804 | { | |
9805 | tls_get_addr_check: | |
9806 | if (rel + 1 < relend) | |
411e1bfb | 9807 | { |
951fd09b AM |
9808 | enum elf_ppc64_reloc_type r_type2; |
9809 | unsigned long r_symndx2; | |
9810 | struct elf_link_hash_entry *h2; | |
9811 | bfd_vma insn1, insn2, insn3; | |
9812 | bfd_vma offset; | |
9813 | ||
9814 | /* The next instruction should be a call to | |
9815 | __tls_get_addr. Peek at the reloc to be sure. */ | |
4ce794b7 | 9816 | r_type2 = ELF64_R_TYPE (rel[1].r_info); |
951fd09b AM |
9817 | r_symndx2 = ELF64_R_SYM (rel[1].r_info); |
9818 | if (r_symndx2 < symtab_hdr->sh_info | |
9819 | || (r_type2 != R_PPC64_REL14 | |
9820 | && r_type2 != R_PPC64_REL14_BRTAKEN | |
9821 | && r_type2 != R_PPC64_REL14_BRNTAKEN | |
9822 | && r_type2 != R_PPC64_REL24)) | |
9823 | break; | |
9824 | ||
9825 | h2 = sym_hashes[r_symndx2 - symtab_hdr->sh_info]; | |
9826 | while (h2->root.type == bfd_link_hash_indirect | |
9827 | || h2->root.type == bfd_link_hash_warning) | |
9828 | h2 = (struct elf_link_hash_entry *) h2->root.u.i.link; | |
8387904d AM |
9829 | if (h2 == NULL || (h2 != &htab->tls_get_addr->elf |
9830 | && h2 != &htab->tls_get_addr_fd->elf)) | |
951fd09b AM |
9831 | break; |
9832 | ||
9833 | /* OK, it checks out. Replace the call. */ | |
9834 | offset = rel[1].r_offset; | |
9835 | insn1 = bfd_get_32 (output_bfd, | |
9836 | contents + rel->r_offset - 2); | |
9837 | insn3 = bfd_get_32 (output_bfd, | |
9838 | contents + offset + 4); | |
9839 | if ((tls_mask & tls_gd) != 0) | |
411e1bfb | 9840 | { |
951fd09b AM |
9841 | /* IE */ |
9842 | insn1 &= (1 << 26) - (1 << 2); | |
9843 | insn1 |= 58 << 26; /* ld */ | |
9844 | insn2 = 0x7c636a14; /* add 3,3,13 */ | |
9845 | rel[1].r_info = ELF64_R_INFO (r_symndx2, R_PPC64_NONE); | |
9846 | if ((tls_mask & TLS_EXPLICIT) == 0) | |
9847 | r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3) | |
9848 | + R_PPC64_GOT_TPREL16_DS); | |
9849 | else | |
9850 | r_type += R_PPC64_TOC16_DS - R_PPC64_TOC16; | |
9851 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
411e1bfb AM |
9852 | } |
9853 | else | |
951fd09b AM |
9854 | { |
9855 | /* LE */ | |
9856 | insn1 = 0x3c6d0000; /* addis 3,13,0 */ | |
9857 | insn2 = 0x38630000; /* addi 3,3,0 */ | |
9858 | if (tls_gd == 0) | |
9859 | { | |
9860 | /* Was an LD reloc. */ | |
9861 | r_symndx = 0; | |
e1918d23 AM |
9862 | rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; |
9863 | rel[1].r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; | |
951fd09b | 9864 | } |
0d4792f7 AM |
9865 | else if (toc_symndx != 0) |
9866 | r_symndx = toc_symndx; | |
951fd09b AM |
9867 | r_type = R_PPC64_TPREL16_HA; |
9868 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
9869 | rel[1].r_info = ELF64_R_INFO (r_symndx, | |
9870 | R_PPC64_TPREL16_LO); | |
9871 | rel[1].r_offset += 2; | |
9872 | } | |
9873 | if (insn3 == NOP | |
9874 | || insn3 == CROR_151515 || insn3 == CROR_313131) | |
9875 | { | |
9876 | insn3 = insn2; | |
9877 | insn2 = NOP; | |
9878 | rel[1].r_offset += 4; | |
9879 | } | |
9880 | bfd_put_32 (output_bfd, insn1, contents + rel->r_offset - 2); | |
9881 | bfd_put_32 (output_bfd, insn2, contents + offset); | |
9882 | bfd_put_32 (output_bfd, insn3, contents + offset + 4); | |
0d4792f7 | 9883 | if (tls_gd == 0 || toc_symndx != 0) |
951fd09b | 9884 | { |
0d4792f7 AM |
9885 | /* We changed the symbol. Start over in order |
9886 | to get h, sym, sec etc. right. */ | |
951fd09b AM |
9887 | rel--; |
9888 | continue; | |
9889 | } | |
411e1bfb | 9890 | } |
411e1bfb | 9891 | } |
411e1bfb AM |
9892 | break; |
9893 | ||
9894 | case R_PPC64_DTPMOD64: | |
951fd09b AM |
9895 | if (rel + 1 < relend |
9896 | && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64) | |
9897 | && rel[1].r_offset == rel->r_offset + 8) | |
411e1bfb | 9898 | { |
951fd09b AM |
9899 | if ((tls_mask & TLS_GD) == 0) |
9900 | { | |
9901 | rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_NONE); | |
9902 | if ((tls_mask & TLS_TPRELGD) != 0) | |
9903 | r_type = R_PPC64_TPREL64; | |
9904 | else | |
9905 | { | |
4ce794b7 | 9906 | bfd_put_64 (output_bfd, 1, contents + rel->r_offset); |
951fd09b AM |
9907 | r_type = R_PPC64_NONE; |
9908 | } | |
9909 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
9910 | } | |
9911 | } | |
9912 | else | |
9913 | { | |
9914 | if ((tls_mask & TLS_LD) == 0) | |
411e1bfb | 9915 | { |
4ce794b7 | 9916 | bfd_put_64 (output_bfd, 1, contents + rel->r_offset); |
411e1bfb | 9917 | r_type = R_PPC64_NONE; |
951fd09b | 9918 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); |
411e1bfb | 9919 | } |
411e1bfb AM |
9920 | } |
9921 | break; | |
9922 | ||
9923 | case R_PPC64_TPREL64: | |
951fd09b | 9924 | if ((tls_mask & TLS_TPREL) == 0) |
411e1bfb AM |
9925 | { |
9926 | r_type = R_PPC64_NONE; | |
9927 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
9928 | } | |
9929 | break; | |
9930 | } | |
9931 | ||
9932 | /* Handle other relocations that tweak non-addend part of insn. */ | |
86c76c7b | 9933 | insn = 0; |
b25116a9 AM |
9934 | max_br_offset = 1 << 25; |
9935 | addend = rel->r_addend; | |
65f38f15 | 9936 | switch (r_type) |
5bd4f169 AM |
9937 | { |
9938 | default: | |
65f38f15 | 9939 | break; |
5bd4f169 | 9940 | |
65f38f15 AM |
9941 | /* Branch taken prediction relocations. */ |
9942 | case R_PPC64_ADDR14_BRTAKEN: | |
9943 | case R_PPC64_REL14_BRTAKEN: | |
cedb70c5 KH |
9944 | insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */ |
9945 | /* Fall thru. */ | |
65f38f15 | 9946 | |
86c76c7b | 9947 | /* Branch not taken prediction relocations. */ |
65f38f15 AM |
9948 | case R_PPC64_ADDR14_BRNTAKEN: |
9949 | case R_PPC64_REL14_BRNTAKEN: | |
411e1bfb AM |
9950 | insn |= bfd_get_32 (output_bfd, |
9951 | contents + rel->r_offset) & ~(0x01 << 21); | |
b25116a9 | 9952 | /* Fall thru. */ |
86c76c7b | 9953 | |
b25116a9 AM |
9954 | case R_PPC64_REL14: |
9955 | max_br_offset = 1 << 15; | |
9956 | /* Fall thru. */ | |
5bd4f169 | 9957 | |
65f38f15 | 9958 | case R_PPC64_REL24: |
ad8e1ba5 AM |
9959 | /* Calls to functions with a different TOC, such as calls to |
9960 | shared objects, need to alter the TOC pointer. This is | |
9961 | done using a linkage stub. A REL24 branching to these | |
9962 | linkage stubs needs to be followed by a nop, as the nop | |
9963 | will be replaced with an instruction to restore the TOC | |
9964 | base pointer. */ | |
b25116a9 | 9965 | stub_entry = NULL; |
8387904d | 9966 | fdh = h; |
ad8e1ba5 | 9967 | if (((h != NULL |
039b3fef AM |
9968 | && (((fdh = h->oh) != NULL |
9969 | && fdh->elf.plt.plist != NULL) | |
9970 | || (fdh = h)->elf.plt.plist != NULL)) | |
8387904d | 9971 | || (sec != NULL |
ad8e1ba5 | 9972 | && sec->output_section != NULL |
b25116a9 | 9973 | && sec->id <= htab->top_id |
ad8e1ba5 AM |
9974 | && (htab->stub_group[sec->id].toc_off |
9975 | != htab->stub_group[input_section->id].toc_off))) | |
721956f4 | 9976 | && (stub_entry = ppc_get_stub_entry (input_section, sec, fdh, |
ad8e1ba5 AM |
9977 | rel, htab)) != NULL |
9978 | && (stub_entry->stub_type == ppc_stub_plt_call | |
9979 | || stub_entry->stub_type == ppc_stub_plt_branch_r2off | |
9980 | || stub_entry->stub_type == ppc_stub_long_branch_r2off)) | |
41bd81ab | 9981 | { |
b25116a9 | 9982 | bfd_boolean can_plt_call = FALSE; |
721956f4 | 9983 | |
eea6121a | 9984 | if (rel->r_offset + 8 <= input_section->size) |
41bd81ab | 9985 | { |
b25116a9 AM |
9986 | unsigned long nop; |
9987 | nop = bfd_get_32 (input_bfd, contents + rel->r_offset + 4); | |
9988 | if (nop == NOP | |
9989 | || nop == CROR_151515 || nop == CROR_313131) | |
41bd81ab | 9990 | { |
4ce794b7 | 9991 | bfd_put_32 (input_bfd, LD_R2_40R1, |
411e1bfb | 9992 | contents + rel->r_offset + 4); |
b25116a9 | 9993 | can_plt_call = TRUE; |
41bd81ab | 9994 | } |
5bd4f169 | 9995 | } |
721956f4 AM |
9996 | |
9997 | if (!can_plt_call) | |
9998 | { | |
ad8e1ba5 AM |
9999 | if (stub_entry->stub_type == ppc_stub_plt_call) |
10000 | { | |
10001 | /* If this is a plain branch rather than a branch | |
10002 | and link, don't require a nop. */ | |
b25116a9 AM |
10003 | unsigned long br; |
10004 | br = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
10005 | if ((br & 1) == 0) | |
10006 | can_plt_call = TRUE; | |
ad8e1ba5 | 10007 | } |
6ab189d5 | 10008 | else if (h != NULL |
039b3fef | 10009 | && strcmp (h->elf.root.root.string, |
6ab189d5 AM |
10010 | ".__libc_start_main") == 0) |
10011 | { | |
10012 | /* Allow crt1 branch to go via a toc adjusting stub. */ | |
b25116a9 | 10013 | can_plt_call = TRUE; |
6ab189d5 | 10014 | } |
ad8e1ba5 AM |
10015 | else |
10016 | { | |
10017 | if (strcmp (input_section->output_section->name, | |
10018 | ".init") == 0 | |
10019 | || strcmp (input_section->output_section->name, | |
10020 | ".fini") == 0) | |
10021 | (*_bfd_error_handler) | |
d003868e | 10022 | (_("%B(%A+0x%lx): automatic multiple TOCs " |
ad8e1ba5 AM |
10023 | "not supported using your crt files; " |
10024 | "recompile with -mminimal-toc or upgrade gcc"), | |
d003868e AM |
10025 | input_bfd, |
10026 | input_section, | |
ad8e1ba5 AM |
10027 | (long) rel->r_offset); |
10028 | else | |
10029 | (*_bfd_error_handler) | |
d003868e | 10030 | (_("%B(%A+0x%lx): sibling call optimization to `%s' " |
ad8e1ba5 AM |
10031 | "does not allow automatic multiple TOCs; " |
10032 | "recompile with -mminimal-toc or " | |
10033 | "-fno-optimize-sibling-calls, " | |
10034 | "or make `%s' extern"), | |
d003868e AM |
10035 | input_bfd, |
10036 | input_section, | |
ad8e1ba5 AM |
10037 | (long) rel->r_offset, |
10038 | sym_name, | |
10039 | sym_name); | |
10040 | bfd_set_error (bfd_error_bad_value); | |
10041 | ret = FALSE; | |
10042 | } | |
721956f4 AM |
10043 | } |
10044 | ||
b25116a9 AM |
10045 | if (can_plt_call |
10046 | && stub_entry->stub_type == ppc_stub_plt_call) | |
10047 | unresolved_reloc = FALSE; | |
10048 | } | |
10049 | ||
8387904d AM |
10050 | if (stub_entry == NULL |
10051 | && get_opd_info (sec) != NULL) | |
10052 | { | |
10053 | /* The branch destination is the value of the opd entry. */ | |
10054 | bfd_vma off = (relocation - sec->output_section->vma | |
10055 | - sec->output_offset + rel->r_addend); | |
10056 | bfd_vma dest = opd_entry_value (sec, off, NULL, NULL); | |
10057 | if (dest != (bfd_vma) -1) | |
10058 | { | |
10059 | relocation = dest; | |
10060 | addend = 0; | |
10061 | } | |
10062 | } | |
10063 | ||
b25116a9 AM |
10064 | /* If the branch is out of reach we ought to have a long |
10065 | branch stub. */ | |
10066 | from = (rel->r_offset | |
10067 | + input_section->output_offset | |
10068 | + input_section->output_section->vma); | |
10069 | ||
10070 | if (stub_entry == NULL | |
10071 | && (relocation + rel->r_addend - from + max_br_offset | |
10072 | >= 2 * max_br_offset) | |
10073 | && r_type != R_PPC64_ADDR14_BRTAKEN | |
10074 | && r_type != R_PPC64_ADDR14_BRNTAKEN) | |
039b3fef AM |
10075 | stub_entry = ppc_get_stub_entry (input_section, sec, h, rel, |
10076 | htab); | |
b25116a9 AM |
10077 | |
10078 | if (stub_entry != NULL) | |
10079 | { | |
10080 | /* Munge up the value and addend so that we call the stub | |
10081 | rather than the procedure directly. */ | |
10082 | relocation = (stub_entry->stub_offset | |
10083 | + stub_entry->stub_sec->output_offset | |
10084 | + stub_entry->stub_sec->output_section->vma); | |
10085 | addend = 0; | |
10086 | } | |
10087 | ||
10088 | if (insn != 0) | |
10089 | { | |
10090 | if (is_power4) | |
721956f4 | 10091 | { |
b25116a9 AM |
10092 | /* Set 'a' bit. This is 0b00010 in BO field for branch |
10093 | on CR(BI) insns (BO == 001at or 011at), and 0b01000 | |
10094 | for branch on CTR insns (BO == 1a00t or 1a01t). */ | |
10095 | if ((insn & (0x14 << 21)) == (0x04 << 21)) | |
10096 | insn |= 0x02 << 21; | |
10097 | else if ((insn & (0x14 << 21)) == (0x10 << 21)) | |
10098 | insn |= 0x08 << 21; | |
10099 | else | |
10100 | break; | |
10101 | } | |
10102 | else | |
10103 | { | |
10104 | /* Invert 'y' bit if not the default. */ | |
10105 | if ((bfd_signed_vma) (relocation + rel->r_addend - from) < 0) | |
10106 | insn ^= 0x01 << 21; | |
721956f4 | 10107 | } |
b25116a9 AM |
10108 | |
10109 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset); | |
5bd4f169 | 10110 | } |
e86ce104 | 10111 | |
06da1e8e AM |
10112 | /* NOP out calls to undefined weak functions. |
10113 | We can thus call a weak function without first | |
10114 | checking whether the function is defined. */ | |
b25116a9 | 10115 | else if (h != NULL |
039b3fef | 10116 | && h->elf.root.type == bfd_link_hash_undefweak |
b25116a9 AM |
10117 | && r_type == R_PPC64_REL24 |
10118 | && relocation == 0 | |
10119 | && rel->r_addend == 0) | |
e86ce104 | 10120 | { |
06da1e8e AM |
10121 | bfd_put_32 (output_bfd, NOP, contents + rel->r_offset); |
10122 | continue; | |
e86ce104 | 10123 | } |
65f38f15 AM |
10124 | break; |
10125 | } | |
5bd4f169 | 10126 | |
65f38f15 | 10127 | /* Set `addend'. */ |
411e1bfb | 10128 | tls_type = 0; |
65f38f15 AM |
10129 | switch (r_type) |
10130 | { | |
10131 | default: | |
10132 | (*_bfd_error_handler) | |
d003868e AM |
10133 | (_("%B: unknown relocation type %d for symbol %s"), |
10134 | input_bfd, (int) r_type, sym_name); | |
5bd4f169 | 10135 | |
65f38f15 | 10136 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 10137 | ret = FALSE; |
65f38f15 | 10138 | continue; |
5bd4f169 | 10139 | |
65f38f15 | 10140 | case R_PPC64_NONE: |
411e1bfb | 10141 | case R_PPC64_TLS: |
04c9666a AM |
10142 | case R_PPC64_GNU_VTINHERIT: |
10143 | case R_PPC64_GNU_VTENTRY: | |
65f38f15 | 10144 | continue; |
5bd4f169 AM |
10145 | |
10146 | /* GOT16 relocations. Like an ADDR16 using the symbol's | |
10147 | address in the GOT as relocation value instead of the | |
411e1bfb | 10148 | symbol's value itself. Also, create a GOT entry for the |
5bd4f169 | 10149 | symbol and put the symbol value there. */ |
411e1bfb AM |
10150 | case R_PPC64_GOT_TLSGD16: |
10151 | case R_PPC64_GOT_TLSGD16_LO: | |
10152 | case R_PPC64_GOT_TLSGD16_HI: | |
10153 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b | 10154 | tls_type = TLS_TLS | TLS_GD; |
411e1bfb AM |
10155 | goto dogot; |
10156 | ||
10157 | case R_PPC64_GOT_TLSLD16: | |
10158 | case R_PPC64_GOT_TLSLD16_LO: | |
10159 | case R_PPC64_GOT_TLSLD16_HI: | |
10160 | case R_PPC64_GOT_TLSLD16_HA: | |
951fd09b | 10161 | tls_type = TLS_TLS | TLS_LD; |
411e1bfb AM |
10162 | goto dogot; |
10163 | ||
10164 | case R_PPC64_GOT_TPREL16_DS: | |
10165 | case R_PPC64_GOT_TPREL16_LO_DS: | |
10166 | case R_PPC64_GOT_TPREL16_HI: | |
10167 | case R_PPC64_GOT_TPREL16_HA: | |
10168 | tls_type = TLS_TLS | TLS_TPREL; | |
10169 | goto dogot; | |
10170 | ||
10171 | case R_PPC64_GOT_DTPREL16_DS: | |
10172 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
10173 | case R_PPC64_GOT_DTPREL16_HI: | |
10174 | case R_PPC64_GOT_DTPREL16_HA: | |
10175 | tls_type = TLS_TLS | TLS_DTPREL; | |
10176 | goto dogot; | |
10177 | ||
65f38f15 AM |
10178 | case R_PPC64_GOT16: |
10179 | case R_PPC64_GOT16_LO: | |
10180 | case R_PPC64_GOT16_HI: | |
10181 | case R_PPC64_GOT16_HA: | |
10182 | case R_PPC64_GOT16_DS: | |
10183 | case R_PPC64_GOT16_LO_DS: | |
411e1bfb | 10184 | dogot: |
5bd4f169 AM |
10185 | { |
10186 | /* Relocation is to the entry for this symbol in the global | |
10187 | offset table. */ | |
e717da7e | 10188 | asection *got; |
d881513a | 10189 | bfd_vma *offp; |
5bd4f169 | 10190 | bfd_vma off; |
d881513a | 10191 | unsigned long indx = 0; |
65f38f15 | 10192 | |
d881513a AM |
10193 | if (tls_type == (TLS_TLS | TLS_LD) |
10194 | && (h == NULL | |
f5385ebf | 10195 | || !h->elf.def_dynamic)) |
e717da7e | 10196 | offp = &ppc64_tlsld_got (input_bfd)->offset; |
411e1bfb | 10197 | else |
5bd4f169 | 10198 | { |
d881513a | 10199 | struct got_entry *ent; |
5bd4f169 | 10200 | |
d881513a AM |
10201 | if (h != NULL) |
10202 | { | |
10203 | bfd_boolean dyn = htab->elf.dynamic_sections_created; | |
039b3fef AM |
10204 | if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, |
10205 | &h->elf) | |
d881513a | 10206 | || (info->shared |
039b3fef | 10207 | && SYMBOL_REFERENCES_LOCAL (info, &h->elf))) |
d881513a AM |
10208 | /* This is actually a static link, or it is a |
10209 | -Bsymbolic link and the symbol is defined | |
10210 | locally, or the symbol was forced to be local | |
10211 | because of a version file. */ | |
10212 | ; | |
10213 | else | |
10214 | { | |
039b3fef | 10215 | indx = h->elf.dynindx; |
d881513a AM |
10216 | unresolved_reloc = FALSE; |
10217 | } | |
039b3fef | 10218 | ent = h->elf.got.glist; |
d881513a | 10219 | } |
411e1bfb | 10220 | else |
5bd4f169 | 10221 | { |
d881513a AM |
10222 | if (local_got_ents == NULL) |
10223 | abort (); | |
10224 | ent = local_got_ents[r_symndx]; | |
5bd4f169 | 10225 | } |
d881513a AM |
10226 | |
10227 | for (; ent != NULL; ent = ent->next) | |
10228 | if (ent->addend == rel->r_addend | |
e717da7e | 10229 | && ent->owner == input_bfd |
d881513a AM |
10230 | && ent->tls_type == tls_type) |
10231 | break; | |
10232 | if (ent == NULL) | |
10233 | abort (); | |
10234 | offp = &ent->got.offset; | |
5bd4f169 | 10235 | } |
411e1bfb | 10236 | |
e717da7e AM |
10237 | got = ppc64_elf_tdata (input_bfd)->got; |
10238 | if (got == NULL) | |
10239 | abort (); | |
10240 | ||
411e1bfb AM |
10241 | /* The offset must always be a multiple of 8. We use the |
10242 | least significant bit to record whether we have already | |
10243 | processed this entry. */ | |
d881513a | 10244 | off = *offp; |
411e1bfb AM |
10245 | if ((off & 1) != 0) |
10246 | off &= ~1; | |
5bd4f169 AM |
10247 | else |
10248 | { | |
411e1bfb AM |
10249 | /* Generate relocs for the dynamic linker, except in |
10250 | the case of TLSLD where we'll use one entry per | |
10251 | module. */ | |
e717da7e AM |
10252 | asection *relgot = ppc64_elf_tdata (input_bfd)->relgot; |
10253 | ||
d881513a | 10254 | *offp = off | 1; |
4e795f50 AM |
10255 | if ((info->shared || indx != 0) |
10256 | && (h == NULL | |
039b3fef AM |
10257 | || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT |
10258 | || h->elf.root.type != bfd_link_hash_undefweak)) | |
5bd4f169 | 10259 | { |
e717da7e AM |
10260 | outrel.r_offset = (got->output_section->vma |
10261 | + got->output_offset | |
411e1bfb | 10262 | + off); |
81407a69 | 10263 | outrel.r_addend = rel->r_addend; |
d881513a | 10264 | if (tls_type & (TLS_LD | TLS_GD)) |
5bd4f169 | 10265 | { |
411e1bfb | 10266 | outrel.r_addend = 0; |
e515b051 | 10267 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPMOD64); |
d881513a AM |
10268 | if (tls_type == (TLS_TLS | TLS_GD)) |
10269 | { | |
e717da7e AM |
10270 | loc = relgot->contents; |
10271 | loc += (relgot->reloc_count++ | |
d881513a AM |
10272 | * sizeof (Elf64_External_Rela)); |
10273 | bfd_elf64_swap_reloca_out (output_bfd, | |
10274 | &outrel, loc); | |
e515b051 | 10275 | outrel.r_offset += 8; |
81407a69 | 10276 | outrel.r_addend = rel->r_addend; |
d881513a AM |
10277 | outrel.r_info |
10278 | = ELF64_R_INFO (indx, R_PPC64_DTPREL64); | |
d881513a | 10279 | } |
411e1bfb | 10280 | } |
951fd09b | 10281 | else if (tls_type == (TLS_TLS | TLS_DTPREL)) |
411e1bfb | 10282 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64); |
951fd09b | 10283 | else if (tls_type == (TLS_TLS | TLS_TPREL)) |
411e1bfb AM |
10284 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_TPREL64); |
10285 | else if (indx == 0) | |
81407a69 AM |
10286 | { |
10287 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_RELATIVE); | |
10288 | ||
10289 | /* Write the .got section contents for the sake | |
10290 | of prelink. */ | |
e717da7e | 10291 | loc = got->contents + off; |
23fbd6fa JJ |
10292 | bfd_put_64 (output_bfd, outrel.r_addend + relocation, |
10293 | loc); | |
81407a69 | 10294 | } |
411e1bfb AM |
10295 | else |
10296 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT); | |
81407a69 AM |
10297 | |
10298 | if (indx == 0 && tls_type != (TLS_TLS | TLS_LD)) | |
e515b051 AM |
10299 | { |
10300 | outrel.r_addend += relocation; | |
10301 | if (tls_type & (TLS_GD | TLS_DTPREL | TLS_TPREL)) | |
e1918d23 | 10302 | outrel.r_addend -= htab->elf.tls_sec->vma; |
e515b051 | 10303 | } |
e717da7e AM |
10304 | loc = relgot->contents; |
10305 | loc += (relgot->reloc_count++ | |
411e1bfb AM |
10306 | * sizeof (Elf64_External_Rela)); |
10307 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); | |
10308 | } | |
10309 | ||
ad8e1ba5 | 10310 | /* Init the .got section contents here if we're not |
81407a69 | 10311 | emitting a reloc. */ |
d881513a | 10312 | else |
411e1bfb | 10313 | { |
d881513a | 10314 | relocation += rel->r_addend; |
7b609f53 AM |
10315 | if (tls_type == (TLS_TLS | TLS_LD)) |
10316 | relocation = 1; | |
10317 | else if (tls_type != 0) | |
411e1bfb | 10318 | { |
e1918d23 | 10319 | relocation -= htab->elf.tls_sec->vma + DTP_OFFSET; |
7b609f53 | 10320 | if (tls_type == (TLS_TLS | TLS_TPREL)) |
411e1bfb | 10321 | relocation += DTP_OFFSET - TP_OFFSET; |
5bd4f169 | 10322 | |
7b609f53 AM |
10323 | if (tls_type == (TLS_TLS | TLS_GD)) |
10324 | { | |
10325 | bfd_put_64 (output_bfd, relocation, | |
e717da7e | 10326 | got->contents + off + 8); |
7b609f53 AM |
10327 | relocation = 1; |
10328 | } | |
411e1bfb | 10329 | } |
7b609f53 | 10330 | |
411e1bfb | 10331 | bfd_put_64 (output_bfd, relocation, |
e717da7e | 10332 | got->contents + off); |
5bd4f169 AM |
10333 | } |
10334 | } | |
10335 | ||
65f38f15 AM |
10336 | if (off >= (bfd_vma) -2) |
10337 | abort (); | |
10338 | ||
e717da7e | 10339 | relocation = got->output_offset + off; |
65f38f15 | 10340 | |
5bd4f169 | 10341 | /* TOC base (r2) is TOC start plus 0x8000. */ |
e717da7e | 10342 | addend = -TOC_BASE_OFF; |
5bd4f169 | 10343 | } |
65f38f15 AM |
10344 | break; |
10345 | ||
10346 | case R_PPC64_PLT16_HA: | |
10347 | case R_PPC64_PLT16_HI: | |
10348 | case R_PPC64_PLT16_LO: | |
10349 | case R_PPC64_PLT32: | |
10350 | case R_PPC64_PLT64: | |
10351 | /* Relocation is to the entry for this symbol in the | |
10352 | procedure linkage table. */ | |
10353 | ||
10354 | /* Resolve a PLT reloc against a local symbol directly, | |
10355 | without using the procedure linkage table. */ | |
10356 | if (h == NULL) | |
10357 | break; | |
10358 | ||
411e1bfb AM |
10359 | /* It's possible that we didn't make a PLT entry for this |
10360 | symbol. This happens when statically linking PIC code, | |
10361 | or when using -Bsymbolic. Go find a match if there is a | |
10362 | PLT entry. */ | |
4ce794b7 | 10363 | if (htab->plt != NULL) |
65f38f15 | 10364 | { |
411e1bfb | 10365 | struct plt_entry *ent; |
039b3fef | 10366 | for (ent = h->elf.plt.plist; ent != NULL; ent = ent->next) |
411e1bfb AM |
10367 | if (ent->addend == rel->r_addend |
10368 | && ent->plt.offset != (bfd_vma) -1) | |
10369 | { | |
4ce794b7 AM |
10370 | relocation = (htab->plt->output_section->vma |
10371 | + htab->plt->output_offset | |
411e1bfb AM |
10372 | + ent->plt.offset); |
10373 | unresolved_reloc = FALSE; | |
10374 | } | |
65f38f15 | 10375 | } |
65f38f15 | 10376 | break; |
5bd4f169 | 10377 | |
0b13192e AM |
10378 | case R_PPC64_TOC: |
10379 | /* Relocation value is TOC base. */ | |
10380 | relocation = TOCstart; | |
10381 | if (r_symndx == 0) | |
10382 | relocation += htab->stub_group[input_section->id].toc_off; | |
8517fae7 AM |
10383 | else if (unresolved_reloc) |
10384 | ; | |
10385 | else if (sec != NULL && sec->id <= htab->top_id) | |
0b13192e AM |
10386 | relocation += htab->stub_group[sec->id].toc_off; |
10387 | else | |
10388 | unresolved_reloc = TRUE; | |
10389 | goto dodyn2; | |
10390 | ||
5bd4f169 AM |
10391 | /* TOC16 relocs. We want the offset relative to the TOC base, |
10392 | which is the address of the start of the TOC plus 0x8000. | |
10393 | The TOC consists of sections .got, .toc, .tocbss, and .plt, | |
10394 | in this order. */ | |
65f38f15 AM |
10395 | case R_PPC64_TOC16: |
10396 | case R_PPC64_TOC16_LO: | |
10397 | case R_PPC64_TOC16_HI: | |
10398 | case R_PPC64_TOC16_DS: | |
10399 | case R_PPC64_TOC16_LO_DS: | |
10400 | case R_PPC64_TOC16_HA: | |
ad8e1ba5 | 10401 | addend -= TOCstart + htab->stub_group[input_section->id].toc_off; |
5bd4f169 AM |
10402 | break; |
10403 | ||
10404 | /* Relocate against the beginning of the section. */ | |
65f38f15 AM |
10405 | case R_PPC64_SECTOFF: |
10406 | case R_PPC64_SECTOFF_LO: | |
10407 | case R_PPC64_SECTOFF_HI: | |
10408 | case R_PPC64_SECTOFF_DS: | |
10409 | case R_PPC64_SECTOFF_LO_DS: | |
10410 | case R_PPC64_SECTOFF_HA: | |
4ce794b7 | 10411 | if (sec != NULL) |
65f38f15 | 10412 | addend -= sec->output_section->vma; |
5bd4f169 AM |
10413 | break; |
10414 | ||
721956f4 AM |
10415 | case R_PPC64_REL14: |
10416 | case R_PPC64_REL14_BRNTAKEN: | |
10417 | case R_PPC64_REL14_BRTAKEN: | |
5d1634d7 AM |
10418 | case R_PPC64_REL24: |
10419 | break; | |
10420 | ||
411e1bfb AM |
10421 | case R_PPC64_TPREL16: |
10422 | case R_PPC64_TPREL16_LO: | |
10423 | case R_PPC64_TPREL16_HI: | |
10424 | case R_PPC64_TPREL16_HA: | |
10425 | case R_PPC64_TPREL16_DS: | |
10426 | case R_PPC64_TPREL16_LO_DS: | |
10427 | case R_PPC64_TPREL16_HIGHER: | |
10428 | case R_PPC64_TPREL16_HIGHERA: | |
10429 | case R_PPC64_TPREL16_HIGHEST: | |
10430 | case R_PPC64_TPREL16_HIGHESTA: | |
e1918d23 | 10431 | addend -= htab->elf.tls_sec->vma + TP_OFFSET; |
411e1bfb AM |
10432 | if (info->shared) |
10433 | /* The TPREL16 relocs shouldn't really be used in shared | |
10434 | libs as they will result in DT_TEXTREL being set, but | |
10435 | support them anyway. */ | |
10436 | goto dodyn; | |
10437 | break; | |
10438 | ||
10439 | case R_PPC64_DTPREL16: | |
10440 | case R_PPC64_DTPREL16_LO: | |
10441 | case R_PPC64_DTPREL16_HI: | |
10442 | case R_PPC64_DTPREL16_HA: | |
10443 | case R_PPC64_DTPREL16_DS: | |
10444 | case R_PPC64_DTPREL16_LO_DS: | |
10445 | case R_PPC64_DTPREL16_HIGHER: | |
10446 | case R_PPC64_DTPREL16_HIGHERA: | |
10447 | case R_PPC64_DTPREL16_HIGHEST: | |
10448 | case R_PPC64_DTPREL16_HIGHESTA: | |
e1918d23 | 10449 | addend -= htab->elf.tls_sec->vma + DTP_OFFSET; |
411e1bfb AM |
10450 | break; |
10451 | ||
e515b051 AM |
10452 | case R_PPC64_DTPMOD64: |
10453 | relocation = 1; | |
10454 | addend = 0; | |
10455 | goto dodyn; | |
10456 | ||
411e1bfb | 10457 | case R_PPC64_TPREL64: |
e1918d23 | 10458 | addend -= htab->elf.tls_sec->vma + TP_OFFSET; |
411e1bfb AM |
10459 | goto dodyn; |
10460 | ||
10461 | case R_PPC64_DTPREL64: | |
e1918d23 | 10462 | addend -= htab->elf.tls_sec->vma + DTP_OFFSET; |
411e1bfb AM |
10463 | /* Fall thru */ |
10464 | ||
65f38f15 AM |
10465 | /* Relocations that may need to be propagated if this is a |
10466 | dynamic object. */ | |
04c9666a | 10467 | case R_PPC64_REL30: |
65f38f15 AM |
10468 | case R_PPC64_REL32: |
10469 | case R_PPC64_REL64: | |
10470 | case R_PPC64_ADDR14: | |
10471 | case R_PPC64_ADDR14_BRNTAKEN: | |
10472 | case R_PPC64_ADDR14_BRTAKEN: | |
10473 | case R_PPC64_ADDR16: | |
10474 | case R_PPC64_ADDR16_DS: | |
10475 | case R_PPC64_ADDR16_HA: | |
10476 | case R_PPC64_ADDR16_HI: | |
10477 | case R_PPC64_ADDR16_HIGHER: | |
10478 | case R_PPC64_ADDR16_HIGHERA: | |
10479 | case R_PPC64_ADDR16_HIGHEST: | |
10480 | case R_PPC64_ADDR16_HIGHESTA: | |
10481 | case R_PPC64_ADDR16_LO: | |
10482 | case R_PPC64_ADDR16_LO_DS: | |
10483 | case R_PPC64_ADDR24: | |
65f38f15 AM |
10484 | case R_PPC64_ADDR32: |
10485 | case R_PPC64_ADDR64: | |
10486 | case R_PPC64_UADDR16: | |
10487 | case R_PPC64_UADDR32: | |
10488 | case R_PPC64_UADDR64: | |
ec338859 AM |
10489 | /* r_symndx will be zero only for relocs against symbols |
10490 | from removed linkonce sections, or sections discarded by | |
10491 | a linker script. */ | |
411e1bfb | 10492 | dodyn: |
5d1634d7 AM |
10493 | if (r_symndx == 0) |
10494 | break; | |
10495 | /* Fall thru. */ | |
10496 | ||
0b13192e | 10497 | dodyn2: |
5d1634d7 | 10498 | if ((input_section->flags & SEC_ALLOC) == 0) |
ec338859 AM |
10499 | break; |
10500 | ||
41bd81ab AM |
10501 | if (NO_OPD_RELOCS && is_opd) |
10502 | break; | |
10503 | ||
65f38f15 | 10504 | if ((info->shared |
4e795f50 | 10505 | && (h == NULL |
039b3fef AM |
10506 | || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT |
10507 | || h->elf.root.type != bfd_link_hash_undefweak) | |
411e1bfb | 10508 | && (MUST_BE_DYN_RELOC (r_type) |
039b3fef | 10509 | || !SYMBOL_CALLS_LOCAL (info, &h->elf))) |
f4656909 AM |
10510 | || (ELIMINATE_COPY_RELOCS |
10511 | && !info->shared | |
65f38f15 | 10512 | && h != NULL |
039b3fef | 10513 | && h->elf.dynindx != -1 |
f5385ebf AM |
10514 | && !h->elf.non_got_ref |
10515 | && h->elf.def_dynamic | |
10516 | && !h->elf.def_regular)) | |
65f38f15 AM |
10517 | { |
10518 | Elf_Internal_Rela outrel; | |
b34976b6 | 10519 | bfd_boolean skip, relocate; |
65f38f15 | 10520 | asection *sreloc; |
947216bf | 10521 | bfd_byte *loc; |
1cf1f670 | 10522 | bfd_vma out_off; |
65f38f15 AM |
10523 | |
10524 | /* When generating a dynamic object, these relocations | |
10525 | are copied into the output file to be resolved at run | |
10526 | time. */ | |
10527 | ||
b34976b6 AM |
10528 | skip = FALSE; |
10529 | relocate = FALSE; | |
65f38f15 | 10530 | |
1cf1f670 AM |
10531 | out_off = _bfd_elf_section_offset (output_bfd, info, |
10532 | input_section, rel->r_offset); | |
10533 | if (out_off == (bfd_vma) -1) | |
b34976b6 | 10534 | skip = TRUE; |
1cf1f670 | 10535 | else if (out_off == (bfd_vma) -2) |
b34976b6 | 10536 | skip = TRUE, relocate = TRUE; |
1cf1f670 AM |
10537 | out_off += (input_section->output_section->vma |
10538 | + input_section->output_offset); | |
10539 | outrel.r_offset = out_off; | |
411e1bfb | 10540 | outrel.r_addend = rel->r_addend; |
65f38f15 | 10541 | |
1cf1f670 AM |
10542 | /* Optimize unaligned reloc use. */ |
10543 | if ((r_type == R_PPC64_ADDR64 && (out_off & 7) != 0) | |
10544 | || (r_type == R_PPC64_UADDR64 && (out_off & 7) == 0)) | |
10545 | r_type ^= R_PPC64_ADDR64 ^ R_PPC64_UADDR64; | |
10546 | else if ((r_type == R_PPC64_ADDR32 && (out_off & 3) != 0) | |
10547 | || (r_type == R_PPC64_UADDR32 && (out_off & 3) == 0)) | |
10548 | r_type ^= R_PPC64_ADDR32 ^ R_PPC64_UADDR32; | |
10549 | else if ((r_type == R_PPC64_ADDR16 && (out_off & 1) != 0) | |
10550 | || (r_type == R_PPC64_UADDR16 && (out_off & 1) == 0)) | |
10551 | r_type ^= R_PPC64_ADDR16 ^ R_PPC64_UADDR16; | |
10552 | ||
65f38f15 | 10553 | if (skip) |
0bb2d96a | 10554 | memset (&outrel, 0, sizeof outrel); |
039b3fef | 10555 | else if (!SYMBOL_REFERENCES_LOCAL (info, &h->elf) |
0b13192e AM |
10556 | && !is_opd |
10557 | && r_type != R_PPC64_TOC) | |
039b3fef | 10558 | outrel.r_info = ELF64_R_INFO (h->elf.dynindx, r_type); |
65f38f15 AM |
10559 | else |
10560 | { | |
41bd81ab AM |
10561 | /* This symbol is local, or marked to become local, |
10562 | or this is an opd section reloc which must point | |
10563 | at a local function. */ | |
65f38f15 | 10564 | outrel.r_addend += relocation; |
e86ce104 | 10565 | if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC) |
65f38f15 | 10566 | { |
3fad3c7c | 10567 | if (is_opd && h != NULL) |
afbe61cf AM |
10568 | { |
10569 | /* Lie about opd entries. This case occurs | |
10570 | when building shared libraries and we | |
10571 | reference a function in another shared | |
3fad3c7c AM |
10572 | lib. The same thing happens for a weak |
10573 | definition in an application that's | |
10574 | overridden by a strong definition in a | |
10575 | shared lib. (I believe this is a generic | |
10576 | bug in binutils handling of weak syms.) | |
10577 | In these cases we won't use the opd | |
1e2f5b6e | 10578 | entry in this lib. */ |
b34976b6 | 10579 | unresolved_reloc = FALSE; |
afbe61cf | 10580 | } |
65f38f15 | 10581 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); |
81407a69 AM |
10582 | |
10583 | /* We need to relocate .opd contents for ld.so. | |
10584 | Prelink also wants simple and consistent rules | |
10585 | for relocs. This make all RELATIVE relocs have | |
10586 | *r_offset equal to r_addend. */ | |
10587 | relocate = TRUE; | |
65f38f15 AM |
10588 | } |
10589 | else | |
10590 | { | |
10591 | long indx = 0; | |
10592 | ||
41bd81ab | 10593 | if (bfd_is_abs_section (sec)) |
65f38f15 AM |
10594 | ; |
10595 | else if (sec == NULL || sec->owner == NULL) | |
10596 | { | |
10597 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 10598 | return FALSE; |
65f38f15 AM |
10599 | } |
10600 | else | |
10601 | { | |
10602 | asection *osec; | |
10603 | ||
10604 | osec = sec->output_section; | |
10605 | indx = elf_section_data (osec)->dynindx; | |
10606 | ||
10607 | /* We are turning this relocation into one | |
10608 | against a section symbol, so subtract out | |
10609 | the output section's address but not the | |
10610 | offset of the input section in the output | |
10611 | section. */ | |
10612 | outrel.r_addend -= osec->vma; | |
10613 | } | |
10614 | ||
10615 | outrel.r_info = ELF64_R_INFO (indx, r_type); | |
10616 | } | |
10617 | } | |
10618 | ||
10619 | sreloc = elf_section_data (input_section)->sreloc; | |
10620 | if (sreloc == NULL) | |
10621 | abort (); | |
10622 | ||
947216bf AM |
10623 | loc = sreloc->contents; |
10624 | loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela); | |
65f38f15 AM |
10625 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); |
10626 | ||
10627 | /* If this reloc is against an external symbol, it will | |
10628 | be computed at runtime, so there's no need to do | |
81407a69 AM |
10629 | anything now. However, for the sake of prelink ensure |
10630 | that the section contents are a known value. */ | |
65f38f15 | 10631 | if (! relocate) |
81407a69 AM |
10632 | { |
10633 | unresolved_reloc = FALSE; | |
10634 | /* The value chosen here is quite arbitrary as ld.so | |
10635 | ignores section contents except for the special | |
10636 | case of .opd where the contents might be accessed | |
10637 | before relocation. Choose zero, as that won't | |
10638 | cause reloc overflow. */ | |
10639 | relocation = 0; | |
10640 | addend = 0; | |
10641 | /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs | |
10642 | to improve backward compatibility with older | |
10643 | versions of ld. */ | |
10644 | if (r_type == R_PPC64_ADDR64) | |
10645 | addend = outrel.r_addend; | |
10646 | /* Adjust pc_relative relocs to have zero in *r_offset. */ | |
4ce794b7 | 10647 | else if (ppc64_elf_howto_table[r_type]->pc_relative) |
000732f7 AM |
10648 | addend = (input_section->output_section->vma |
10649 | + input_section->output_offset | |
10650 | + rel->r_offset); | |
81407a69 | 10651 | } |
65f38f15 | 10652 | } |
5bd4f169 AM |
10653 | break; |
10654 | ||
65f38f15 AM |
10655 | case R_PPC64_COPY: |
10656 | case R_PPC64_GLOB_DAT: | |
10657 | case R_PPC64_JMP_SLOT: | |
10658 | case R_PPC64_RELATIVE: | |
10659 | /* We shouldn't ever see these dynamic relocs in relocatable | |
10660 | files. */ | |
ae9a127f | 10661 | /* Fall through. */ |
65f38f15 AM |
10662 | |
10663 | case R_PPC64_PLTGOT16: | |
10664 | case R_PPC64_PLTGOT16_DS: | |
10665 | case R_PPC64_PLTGOT16_HA: | |
10666 | case R_PPC64_PLTGOT16_HI: | |
10667 | case R_PPC64_PLTGOT16_LO: | |
10668 | case R_PPC64_PLTGOT16_LO_DS: | |
10669 | case R_PPC64_PLTREL32: | |
10670 | case R_PPC64_PLTREL64: | |
10671 | /* These ones haven't been implemented yet. */ | |
10672 | ||
10673 | (*_bfd_error_handler) | |
d003868e AM |
10674 | (_("%B: relocation %s is not supported for symbol %s."), |
10675 | input_bfd, | |
4ce794b7 | 10676 | ppc64_elf_howto_table[r_type]->name, sym_name); |
5bd4f169 AM |
10677 | |
10678 | bfd_set_error (bfd_error_invalid_operation); | |
b34976b6 | 10679 | ret = FALSE; |
5bd4f169 | 10680 | continue; |
65f38f15 | 10681 | } |
5bd4f169 | 10682 | |
65f38f15 AM |
10683 | /* Do any further special processing. */ |
10684 | switch (r_type) | |
10685 | { | |
10686 | default: | |
10687 | break; | |
10688 | ||
10689 | case R_PPC64_ADDR16_HA: | |
10690 | case R_PPC64_ADDR16_HIGHERA: | |
10691 | case R_PPC64_ADDR16_HIGHESTA: | |
86bbe32f AM |
10692 | case R_PPC64_GOT16_HA: |
10693 | case R_PPC64_PLTGOT16_HA: | |
65f38f15 AM |
10694 | case R_PPC64_PLT16_HA: |
10695 | case R_PPC64_TOC16_HA: | |
10696 | case R_PPC64_SECTOFF_HA: | |
411e1bfb AM |
10697 | case R_PPC64_TPREL16_HA: |
10698 | case R_PPC64_DTPREL16_HA: | |
10699 | case R_PPC64_GOT_TLSGD16_HA: | |
10700 | case R_PPC64_GOT_TLSLD16_HA: | |
10701 | case R_PPC64_GOT_TPREL16_HA: | |
10702 | case R_PPC64_GOT_DTPREL16_HA: | |
10703 | case R_PPC64_TPREL16_HIGHER: | |
10704 | case R_PPC64_TPREL16_HIGHERA: | |
10705 | case R_PPC64_TPREL16_HIGHEST: | |
10706 | case R_PPC64_TPREL16_HIGHESTA: | |
10707 | case R_PPC64_DTPREL16_HIGHER: | |
10708 | case R_PPC64_DTPREL16_HIGHERA: | |
10709 | case R_PPC64_DTPREL16_HIGHEST: | |
10710 | case R_PPC64_DTPREL16_HIGHESTA: | |
65f38f15 AM |
10711 | /* It's just possible that this symbol is a weak symbol |
10712 | that's not actually defined anywhere. In that case, | |
10713 | 'sec' would be NULL, and we should leave the symbol | |
10714 | alone (it will be set to zero elsewhere in the link). */ | |
10715 | if (sec != NULL) | |
e515b051 AM |
10716 | /* Add 0x10000 if sign bit in 0:15 is set. |
10717 | Bits 0:15 are not used. */ | |
10718 | addend += 0x8000; | |
65f38f15 AM |
10719 | break; |
10720 | ||
10721 | case R_PPC64_ADDR16_DS: | |
10722 | case R_PPC64_ADDR16_LO_DS: | |
10723 | case R_PPC64_GOT16_DS: | |
10724 | case R_PPC64_GOT16_LO_DS: | |
10725 | case R_PPC64_PLT16_LO_DS: | |
10726 | case R_PPC64_SECTOFF_DS: | |
10727 | case R_PPC64_SECTOFF_LO_DS: | |
10728 | case R_PPC64_TOC16_DS: | |
10729 | case R_PPC64_TOC16_LO_DS: | |
10730 | case R_PPC64_PLTGOT16_DS: | |
10731 | case R_PPC64_PLTGOT16_LO_DS: | |
411e1bfb AM |
10732 | case R_PPC64_GOT_TPREL16_DS: |
10733 | case R_PPC64_GOT_TPREL16_LO_DS: | |
10734 | case R_PPC64_GOT_DTPREL16_DS: | |
10735 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
10736 | case R_PPC64_TPREL16_DS: | |
10737 | case R_PPC64_TPREL16_LO_DS: | |
10738 | case R_PPC64_DTPREL16_DS: | |
10739 | case R_PPC64_DTPREL16_LO_DS: | |
adadcc0c AM |
10740 | insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3)); |
10741 | mask = 3; | |
10742 | /* If this reloc is against an lq insn, then the value must be | |
10743 | a multiple of 16. This is somewhat of a hack, but the | |
10744 | "correct" way to do this by defining _DQ forms of all the | |
10745 | _DS relocs bloats all reloc switches in this file. It | |
10746 | doesn't seem to make much sense to use any of these relocs | |
10747 | in data, so testing the insn should be safe. */ | |
494dac0c | 10748 | if ((insn & (0x3f << 26)) == (56u << 26)) |
adadcc0c AM |
10749 | mask = 15; |
10750 | if (((relocation + addend) & mask) != 0) | |
65f38f15 AM |
10751 | { |
10752 | (*_bfd_error_handler) | |
d003868e AM |
10753 | (_("%B: error: relocation %s not a multiple of %d"), |
10754 | input_bfd, | |
4ce794b7 | 10755 | ppc64_elf_howto_table[r_type]->name, |
adadcc0c | 10756 | mask + 1); |
65f38f15 | 10757 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 10758 | ret = FALSE; |
65f38f15 AM |
10759 | continue; |
10760 | } | |
10761 | break; | |
5bd4f169 AM |
10762 | } |
10763 | ||
239e1f3a AM |
10764 | /* Dynamic relocs are not propagated for SEC_DEBUGGING sections |
10765 | because such sections are not SEC_ALLOC and thus ld.so will | |
10766 | not process them. */ | |
65f38f15 | 10767 | if (unresolved_reloc |
239e1f3a | 10768 | && !((input_section->flags & SEC_DEBUGGING) != 0 |
f5385ebf | 10769 | && h->elf.def_dynamic)) |
9c07fe7c AM |
10770 | { |
10771 | (*_bfd_error_handler) | |
d003868e AM |
10772 | (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"), |
10773 | input_bfd, | |
10774 | input_section, | |
9c07fe7c | 10775 | (long) rel->r_offset, |
7b609f53 | 10776 | ppc64_elf_howto_table[(int) r_type]->name, |
039b3fef | 10777 | h->elf.root.root.string); |
b34976b6 | 10778 | ret = FALSE; |
9c07fe7c | 10779 | } |
5bd4f169 | 10780 | |
65f38f15 | 10781 | r = _bfd_final_link_relocate (ppc64_elf_howto_table[(int) r_type], |
5bd4f169 AM |
10782 | input_bfd, |
10783 | input_section, | |
10784 | contents, | |
411e1bfb | 10785 | rel->r_offset, |
5bd4f169 AM |
10786 | relocation, |
10787 | addend); | |
10788 | ||
ef60b7ff | 10789 | if (r != bfd_reloc_ok) |
5bd4f169 | 10790 | { |
cd27b276 AM |
10791 | if (sym_name == NULL) |
10792 | sym_name = "(null)"; | |
10793 | if (r == bfd_reloc_overflow) | |
5bd4f169 | 10794 | { |
cd27b276 AM |
10795 | if (warned) |
10796 | continue; | |
10797 | if (h != NULL | |
039b3fef | 10798 | && h->elf.root.type == bfd_link_hash_undefweak |
4ce794b7 | 10799 | && ppc64_elf_howto_table[r_type]->pc_relative) |
5bd4f169 AM |
10800 | { |
10801 | /* Assume this is a call protected by other code that | |
10802 | detects the symbol is undefined. If this is the case, | |
10803 | we can safely ignore the overflow. If not, the | |
10804 | program is hosed anyway, and a little warning isn't | |
10805 | going to help. */ | |
10806 | ||
10807 | continue; | |
10808 | } | |
10809 | ||
ef60b7ff | 10810 | if (!((*info->callbacks->reloc_overflow) |
dfeffb9f L |
10811 | (info, (h ? &h->elf.root : NULL), sym_name, |
10812 | ppc64_elf_howto_table[r_type]->name, | |
411e1bfb | 10813 | rel->r_addend, input_bfd, input_section, rel->r_offset))) |
b34976b6 | 10814 | return FALSE; |
ef60b7ff AM |
10815 | } |
10816 | else | |
10817 | { | |
10818 | (*_bfd_error_handler) | |
d003868e AM |
10819 | (_("%B(%A+0x%lx): %s reloc against `%s': error %d"), |
10820 | input_bfd, | |
10821 | input_section, | |
7b609f53 | 10822 | (long) rel->r_offset, |
4ce794b7 | 10823 | ppc64_elf_howto_table[r_type]->name, |
7b609f53 AM |
10824 | sym_name, |
10825 | (int) r); | |
b34976b6 | 10826 | ret = FALSE; |
ef60b7ff | 10827 | } |
5bd4f169 | 10828 | } |
5bd4f169 AM |
10829 | } |
10830 | ||
645ea6a9 AM |
10831 | /* If we're emitting relocations, then shortly after this function |
10832 | returns, reloc offsets and addends for this section will be | |
10833 | adjusted. Worse, reloc symbol indices will be for the output | |
8860955f AM |
10834 | file rather than the input. Save a copy of the relocs for |
10835 | opd_entry_value. */ | |
10836 | if (is_opd && info->emitrelocations) | |
10837 | { | |
10838 | bfd_size_type amt; | |
10839 | amt = input_section->reloc_count * sizeof (Elf_Internal_Rela); | |
10840 | rel = bfd_alloc (input_bfd, amt); | |
10841 | BFD_ASSERT (ppc64_elf_tdata (input_bfd)->opd_relocs == NULL); | |
10842 | ppc64_elf_tdata (input_bfd)->opd_relocs = rel; | |
10843 | if (rel == NULL) | |
10844 | return FALSE; | |
10845 | memcpy (rel, relocs, amt); | |
10846 | } | |
5bd4f169 AM |
10847 | return ret; |
10848 | } | |
10849 | ||
754021d0 AM |
10850 | /* Adjust the value of any local symbols in opd sections. */ |
10851 | ||
10852 | static bfd_boolean | |
10853 | ppc64_elf_output_symbol_hook (struct bfd_link_info *info, | |
10854 | const char *name ATTRIBUTE_UNUSED, | |
10855 | Elf_Internal_Sym *elfsym, | |
10856 | asection *input_sec, | |
10857 | struct elf_link_hash_entry *h) | |
10858 | { | |
4025353c | 10859 | long *opd_adjust, adjust; |
754021d0 AM |
10860 | bfd_vma value; |
10861 | ||
4025353c AM |
10862 | if (h != NULL) |
10863 | return TRUE; | |
10864 | ||
10865 | opd_adjust = get_opd_info (input_sec); | |
10866 | if (opd_adjust == NULL) | |
754021d0 AM |
10867 | return TRUE; |
10868 | ||
10869 | value = elfsym->st_value - input_sec->output_offset; | |
10870 | if (!info->relocatable) | |
10871 | value -= input_sec->output_section->vma; | |
10872 | ||
3f764659 | 10873 | adjust = opd_adjust[value / 8]; |
4025353c AM |
10874 | if (adjust == -1) |
10875 | elfsym->st_value = 0; | |
10876 | else | |
10877 | elfsym->st_value += adjust; | |
754021d0 AM |
10878 | return TRUE; |
10879 | } | |
10880 | ||
5bd4f169 AM |
10881 | /* Finish up dynamic symbol handling. We set the contents of various |
10882 | dynamic sections here. */ | |
10883 | ||
b34976b6 | 10884 | static bfd_boolean |
4ce794b7 AM |
10885 | ppc64_elf_finish_dynamic_symbol (bfd *output_bfd, |
10886 | struct bfd_link_info *info, | |
10887 | struct elf_link_hash_entry *h, | |
10888 | Elf_Internal_Sym *sym) | |
5bd4f169 | 10889 | { |
65f38f15 | 10890 | struct ppc_link_hash_table *htab; |
5bd4f169 | 10891 | bfd *dynobj; |
8387904d AM |
10892 | struct plt_entry *ent; |
10893 | Elf_Internal_Rela rela; | |
10894 | bfd_byte *loc; | |
5bd4f169 | 10895 | |
65f38f15 AM |
10896 | htab = ppc_hash_table (info); |
10897 | dynobj = htab->elf.dynobj; | |
5bd4f169 | 10898 | |
8387904d AM |
10899 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) |
10900 | if (ent->plt.offset != (bfd_vma) -1) | |
10901 | { | |
10902 | /* This symbol has an entry in the procedure linkage | |
10903 | table. Set it up. */ | |
10904 | ||
10905 | if (htab->plt == NULL | |
10906 | || htab->relplt == NULL | |
10907 | || htab->glink == NULL) | |
10908 | abort (); | |
10909 | ||
10910 | /* Create a JMP_SLOT reloc to inform the dynamic linker to | |
10911 | fill in the PLT entry. */ | |
10912 | rela.r_offset = (htab->plt->output_section->vma | |
10913 | + htab->plt->output_offset | |
10914 | + ent->plt.offset); | |
10915 | rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT); | |
10916 | rela.r_addend = ent->addend; | |
10917 | ||
10918 | loc = htab->relplt->contents; | |
10919 | loc += ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE) / PLT_ENTRY_SIZE | |
10920 | * sizeof (Elf64_External_Rela)); | |
10921 | bfd_elf64_swap_reloca_out (output_bfd, &rela, loc); | |
10922 | } | |
5bd4f169 | 10923 | |
f5385ebf | 10924 | if (h->needs_copy) |
5bd4f169 | 10925 | { |
5bd4f169 | 10926 | Elf_Internal_Rela rela; |
947216bf | 10927 | bfd_byte *loc; |
5bd4f169 | 10928 | |
65f38f15 | 10929 | /* This symbol needs a copy reloc. Set it up. */ |
5bd4f169 | 10930 | |
65f38f15 AM |
10931 | if (h->dynindx == -1 |
10932 | || (h->root.type != bfd_link_hash_defined | |
10933 | && h->root.type != bfd_link_hash_defweak) | |
4ce794b7 | 10934 | || htab->relbss == NULL) |
65f38f15 | 10935 | abort (); |
5bd4f169 AM |
10936 | |
10937 | rela.r_offset = (h->root.u.def.value | |
10938 | + h->root.u.def.section->output_section->vma | |
10939 | + h->root.u.def.section->output_offset); | |
10940 | rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY); | |
10941 | rela.r_addend = 0; | |
4ce794b7 AM |
10942 | loc = htab->relbss->contents; |
10943 | loc += htab->relbss->reloc_count++ * sizeof (Elf64_External_Rela); | |
65f38f15 | 10944 | bfd_elf64_swap_reloca_out (output_bfd, &rela, loc); |
5bd4f169 AM |
10945 | } |
10946 | ||
5bd4f169 AM |
10947 | /* Mark some specially defined symbols as absolute. */ |
10948 | if (strcmp (h->root.root.string, "_DYNAMIC") == 0) | |
10949 | sym->st_shndx = SHN_ABS; | |
10950 | ||
b34976b6 | 10951 | return TRUE; |
5bd4f169 AM |
10952 | } |
10953 | ||
65f38f15 AM |
10954 | /* Used to decide how to sort relocs in an optimal manner for the |
10955 | dynamic linker, before writing them out. */ | |
10956 | ||
10957 | static enum elf_reloc_type_class | |
4ce794b7 | 10958 | ppc64_elf_reloc_type_class (const Elf_Internal_Rela *rela) |
65f38f15 | 10959 | { |
04c9666a | 10960 | enum elf_ppc64_reloc_type r_type; |
a33d1f77 | 10961 | |
4ce794b7 | 10962 | r_type = ELF64_R_TYPE (rela->r_info); |
a33d1f77 | 10963 | switch (r_type) |
65f38f15 AM |
10964 | { |
10965 | case R_PPC64_RELATIVE: | |
10966 | return reloc_class_relative; | |
10967 | case R_PPC64_JMP_SLOT: | |
10968 | return reloc_class_plt; | |
10969 | case R_PPC64_COPY: | |
10970 | return reloc_class_copy; | |
10971 | default: | |
10972 | return reloc_class_normal; | |
10973 | } | |
10974 | } | |
10975 | ||
5bd4f169 AM |
10976 | /* Finish up the dynamic sections. */ |
10977 | ||
b34976b6 | 10978 | static bfd_boolean |
4ce794b7 AM |
10979 | ppc64_elf_finish_dynamic_sections (bfd *output_bfd, |
10980 | struct bfd_link_info *info) | |
5bd4f169 | 10981 | { |
65f38f15 AM |
10982 | struct ppc_link_hash_table *htab; |
10983 | bfd *dynobj; | |
5bd4f169 | 10984 | asection *sdyn; |
5bd4f169 | 10985 | |
65f38f15 AM |
10986 | htab = ppc_hash_table (info); |
10987 | dynobj = htab->elf.dynobj; | |
5bd4f169 AM |
10988 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); |
10989 | ||
65f38f15 | 10990 | if (htab->elf.dynamic_sections_created) |
5bd4f169 | 10991 | { |
5bd4f169 AM |
10992 | Elf64_External_Dyn *dyncon, *dynconend; |
10993 | ||
4ce794b7 | 10994 | if (sdyn == NULL || htab->got == NULL) |
65f38f15 | 10995 | abort (); |
5bd4f169 AM |
10996 | |
10997 | dyncon = (Elf64_External_Dyn *) sdyn->contents; | |
eea6121a | 10998 | dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size); |
5bd4f169 AM |
10999 | for (; dyncon < dynconend; dyncon++) |
11000 | { | |
11001 | Elf_Internal_Dyn dyn; | |
19397422 | 11002 | asection *s; |
5bd4f169 AM |
11003 | |
11004 | bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn); | |
11005 | ||
11006 | switch (dyn.d_tag) | |
11007 | { | |
65f38f15 AM |
11008 | default: |
11009 | continue; | |
5bd4f169 | 11010 | |
5d1634d7 | 11011 | case DT_PPC64_GLINK: |
4ce794b7 | 11012 | s = htab->glink; |
6348e046 | 11013 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
ad8e1ba5 AM |
11014 | /* We stupidly defined DT_PPC64_GLINK to be the start |
11015 | of glink rather than the first entry point, which is | |
11016 | what ld.so needs, and now have a bigger stub to | |
11017 | support automatic multiple TOCs. */ | |
11018 | dyn.d_un.d_ptr += GLINK_CALL_STUB_SIZE - 32; | |
5d1634d7 AM |
11019 | break; |
11020 | ||
19397422 AM |
11021 | case DT_PPC64_OPD: |
11022 | s = bfd_get_section_by_name (output_bfd, ".opd"); | |
6348e046 AM |
11023 | if (s == NULL) |
11024 | continue; | |
11025 | dyn.d_un.d_ptr = s->vma; | |
19397422 AM |
11026 | break; |
11027 | ||
11028 | case DT_PPC64_OPDSZ: | |
11029 | s = bfd_get_section_by_name (output_bfd, ".opd"); | |
6348e046 AM |
11030 | if (s == NULL) |
11031 | continue; | |
eea6121a | 11032 | dyn.d_un.d_val = s->size; |
19397422 AM |
11033 | break; |
11034 | ||
65f38f15 | 11035 | case DT_PLTGOT: |
4ce794b7 | 11036 | s = htab->plt; |
6348e046 | 11037 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
65f38f15 AM |
11038 | break; |
11039 | ||
11040 | case DT_JMPREL: | |
4ce794b7 | 11041 | s = htab->relplt; |
6348e046 | 11042 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
65f38f15 | 11043 | break; |
5bd4f169 | 11044 | |
65f38f15 | 11045 | case DT_PLTRELSZ: |
eea6121a | 11046 | dyn.d_un.d_val = htab->relplt->size; |
5d1634d7 AM |
11047 | break; |
11048 | ||
11049 | case DT_RELASZ: | |
11050 | /* Don't count procedure linkage table relocs in the | |
11051 | overall reloc count. */ | |
4ce794b7 | 11052 | s = htab->relplt; |
6348e046 AM |
11053 | if (s == NULL) |
11054 | continue; | |
eea6121a | 11055 | dyn.d_un.d_val -= s->size; |
6348e046 AM |
11056 | break; |
11057 | ||
11058 | case DT_RELA: | |
11059 | /* We may not be using the standard ELF linker script. | |
11060 | If .rela.plt is the first .rela section, we adjust | |
11061 | DT_RELA to not include it. */ | |
4ce794b7 | 11062 | s = htab->relplt; |
6348e046 AM |
11063 | if (s == NULL) |
11064 | continue; | |
11065 | if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset) | |
11066 | continue; | |
eea6121a | 11067 | dyn.d_un.d_ptr += s->size; |
65f38f15 | 11068 | break; |
5bd4f169 | 11069 | } |
5bd4f169 | 11070 | |
65f38f15 | 11071 | bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); |
5bd4f169 | 11072 | } |
5bd4f169 AM |
11073 | } |
11074 | ||
eea6121a | 11075 | if (htab->got != NULL && htab->got->size != 0) |
5d1634d7 AM |
11076 | { |
11077 | /* Fill in the first entry in the global offset table. | |
11078 | We use it to hold the link-time TOCbase. */ | |
11079 | bfd_put_64 (output_bfd, | |
60ee0d4a | 11080 | elf_gp (output_bfd) + TOC_BASE_OFF, |
4ce794b7 | 11081 | htab->got->contents); |
5d1634d7 AM |
11082 | |
11083 | /* Set .got entry size. */ | |
4ce794b7 | 11084 | elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 8; |
5d1634d7 AM |
11085 | } |
11086 | ||
eea6121a | 11087 | if (htab->plt != NULL && htab->plt->size != 0) |
5d1634d7 AM |
11088 | { |
11089 | /* Set .plt entry size. */ | |
4ce794b7 | 11090 | elf_section_data (htab->plt->output_section)->this_hdr.sh_entsize |
5d1634d7 AM |
11091 | = PLT_ENTRY_SIZE; |
11092 | } | |
11093 | ||
e717da7e | 11094 | /* We need to handle writing out multiple GOT sections ourselves, |
7b53ace3 AM |
11095 | since we didn't add them to DYNOBJ. We know dynobj is the first |
11096 | bfd. */ | |
e717da7e AM |
11097 | while ((dynobj = dynobj->link_next) != NULL) |
11098 | { | |
11099 | asection *s; | |
7b53ace3 | 11100 | |
ee75fd95 | 11101 | if (!is_ppc64_elf_target (dynobj->xvec)) |
7b53ace3 AM |
11102 | continue; |
11103 | ||
e717da7e AM |
11104 | s = ppc64_elf_tdata (dynobj)->got; |
11105 | if (s != NULL | |
eea6121a | 11106 | && s->size != 0 |
e717da7e AM |
11107 | && s->output_section != bfd_abs_section_ptr |
11108 | && !bfd_set_section_contents (output_bfd, s->output_section, | |
11109 | s->contents, s->output_offset, | |
eea6121a | 11110 | s->size)) |
e717da7e AM |
11111 | return FALSE; |
11112 | s = ppc64_elf_tdata (dynobj)->relgot; | |
11113 | if (s != NULL | |
eea6121a | 11114 | && s->size != 0 |
e717da7e AM |
11115 | && s->output_section != bfd_abs_section_ptr |
11116 | && !bfd_set_section_contents (output_bfd, s->output_section, | |
11117 | s->contents, s->output_offset, | |
eea6121a | 11118 | s->size)) |
e717da7e AM |
11119 | return FALSE; |
11120 | } | |
f6c52c13 | 11121 | |
b34976b6 | 11122 | return TRUE; |
5bd4f169 AM |
11123 | } |
11124 | ||
5bd4f169 | 11125 | #include "elf64-target.h" |