Commit | Line | Data |
---|---|---|
5bd4f169 | 1 | /* PowerPC64-specific support for 64-bit ELF. |
bce50a28 | 2 | Copyright 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006 |
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 | 91 | #define elf_backend_check_relocs ppc64_elf_check_relocs |
64d03ab5 | 92 | #define elf_backend_gc_mark_dynamic_ref ppc64_elf_gc_mark_dynamic_ref |
ad8e1ba5 AM |
93 | #define elf_backend_gc_mark_hook ppc64_elf_gc_mark_hook |
94 | #define elf_backend_gc_sweep_hook ppc64_elf_gc_sweep_hook | |
95 | #define elf_backend_adjust_dynamic_symbol ppc64_elf_adjust_dynamic_symbol | |
96 | #define elf_backend_hide_symbol ppc64_elf_hide_symbol | |
97 | #define elf_backend_always_size_sections ppc64_elf_func_desc_adjust | |
98 | #define elf_backend_size_dynamic_sections ppc64_elf_size_dynamic_sections | |
60124e18 | 99 | #define elf_backend_action_discarded ppc64_elf_action_discarded |
ad8e1ba5 AM |
100 | #define elf_backend_relocate_section ppc64_elf_relocate_section |
101 | #define elf_backend_finish_dynamic_symbol ppc64_elf_finish_dynamic_symbol | |
102 | #define elf_backend_reloc_type_class ppc64_elf_reloc_type_class | |
103 | #define elf_backend_finish_dynamic_sections ppc64_elf_finish_dynamic_sections | |
754021d0 | 104 | #define elf_backend_link_output_symbol_hook ppc64_elf_output_symbol_hook |
29ef7005 | 105 | #define elf_backend_special_sections ppc64_elf_special_sections |
ad8e1ba5 | 106 | |
5bd4f169 AM |
107 | /* The name of the dynamic interpreter. This is put in the .interp |
108 | section. */ | |
109 | #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1" | |
110 | ||
111 | /* The size in bytes of an entry in the procedure linkage table. */ | |
112 | #define PLT_ENTRY_SIZE 24 | |
113 | ||
114 | /* The initial size of the plt reserved for the dynamic linker. */ | |
5d1634d7 | 115 | #define PLT_INITIAL_ENTRY_SIZE PLT_ENTRY_SIZE |
5bd4f169 AM |
116 | |
117 | /* TOC base pointers offset from start of TOC. */ | |
411e1bfb AM |
118 | #define TOC_BASE_OFF 0x8000 |
119 | ||
120 | /* Offset of tp and dtp pointers from start of TLS block. */ | |
121 | #define TP_OFFSET 0x7000 | |
122 | #define DTP_OFFSET 0x8000 | |
5bd4f169 | 123 | |
ad8e1ba5 AM |
124 | /* .plt call stub instructions. The normal stub is like this, but |
125 | sometimes the .plt entry crosses a 64k boundary and we need to | |
126 | insert an addis to adjust r12. */ | |
127 | #define PLT_CALL_STUB_SIZE (7*4) | |
5d1634d7 AM |
128 | #define ADDIS_R12_R2 0x3d820000 /* addis %r12,%r2,xxx@ha */ |
129 | #define STD_R2_40R1 0xf8410028 /* std %r2,40(%r1) */ | |
130 | #define LD_R11_0R12 0xe96c0000 /* ld %r11,xxx+0@l(%r12) */ | |
131 | #define LD_R2_0R12 0xe84c0000 /* ld %r2,xxx+8@l(%r12) */ | |
132 | #define MTCTR_R11 0x7d6903a6 /* mtctr %r11 */ | |
133 | /* ld %r11,xxx+16@l(%r12) */ | |
134 | #define BCTR 0x4e800420 /* bctr */ | |
135 | ||
5d1634d7 | 136 | |
ad8e1ba5 AM |
137 | #define ADDIS_R2_R2 0x3c420000 /* addis %r2,%r2,off@ha */ |
138 | #define ADDI_R2_R2 0x38420000 /* addi %r2,%r2,off@l */ | |
139 | ||
140 | #define LD_R2_40R1 0xe8410028 /* ld %r2,40(%r1) */ | |
141 | ||
142 | /* glink call stub instructions. We enter with the index in R0, and the | |
143 | address of glink entry in CTR. From that, we can calculate PLT0. */ | |
144 | #define GLINK_CALL_STUB_SIZE (16*4) | |
145 | #define MFCTR_R12 0x7d8902a6 /* mfctr %r12 */ | |
146 | #define SLDI_R11_R0_3 0x780b1f24 /* sldi %r11,%r0,3 */ | |
147 | #define ADDIC_R2_R0_32K 0x34408000 /* addic. %r2,%r0,-32768 */ | |
148 | #define SUB_R12_R12_R11 0x7d8b6050 /* sub %r12,%r12,%r11 */ | |
149 | #define SRADI_R2_R2_63 0x7c42fe76 /* sradi %r2,%r2,63 */ | |
150 | #define SLDI_R11_R0_2 0x780b1764 /* sldi %r11,%r0,2 */ | |
151 | #define AND_R2_R2_R11 0x7c425838 /* and %r2,%r2,%r11 */ | |
152 | /* sub %r12,%r12,%r11 */ | |
153 | #define ADD_R12_R12_R2 0x7d8c1214 /* add %r12,%r12,%r2 */ | |
154 | #define ADDIS_R12_R12 0x3d8c0000 /* addis %r12,%r12,xxx@ha */ | |
155 | /* ld %r11,xxx@l(%r12) */ | |
156 | #define ADDI_R12_R12 0x398c0000 /* addi %r12,%r12,xxx@l */ | |
157 | /* ld %r2,8(%r12) */ | |
158 | /* mtctr %r11 */ | |
159 | /* ld %r11,16(%r12) */ | |
160 | /* bctr */ | |
5d1634d7 AM |
161 | |
162 | /* Pad with this. */ | |
163 | #define NOP 0x60000000 | |
164 | ||
721956f4 AM |
165 | /* Some other nops. */ |
166 | #define CROR_151515 0x4def7b82 | |
167 | #define CROR_313131 0x4ffffb82 | |
168 | ||
cedb70c5 | 169 | /* .glink entries for the first 32k functions are two instructions. */ |
5d1634d7 AM |
170 | #define LI_R0_0 0x38000000 /* li %r0,0 */ |
171 | #define B_DOT 0x48000000 /* b . */ | |
172 | ||
173 | /* After that, we need two instructions to load the index, followed by | |
174 | a branch. */ | |
175 | #define LIS_R0_0 0x3c000000 /* lis %r0,0 */ | |
10ed1bba | 176 | #define ORI_R0_R0_0 0x60000000 /* ori %r0,%r0,0 */ |
41bd81ab | 177 | |
deb0e272 AM |
178 | /* Instructions used by the save and restore reg functions. */ |
179 | #define STD_R0_0R1 0xf8010000 /* std %r0,0(%r1) */ | |
180 | #define STD_R0_0R12 0xf80c0000 /* std %r0,0(%r12) */ | |
181 | #define LD_R0_0R1 0xe8010000 /* ld %r0,0(%r1) */ | |
182 | #define LD_R0_0R12 0xe80c0000 /* ld %r0,0(%r12) */ | |
82bd7b59 AM |
183 | #define STFD_FR0_0R1 0xd8010000 /* stfd %fr0,0(%r1) */ |
184 | #define LFD_FR0_0R1 0xc8010000 /* lfd %fr0,0(%r1) */ | |
deb0e272 AM |
185 | #define LI_R12_0 0x39800000 /* li %r12,0 */ |
186 | #define STVX_VR0_R12_R0 0x7c0c01ce /* stvx %v0,%r12,%r0 */ | |
187 | #define LVX_VR0_R12_R0 0x7c0c00ce /* lvx %v0,%r12,%r0 */ | |
188 | #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */ | |
82bd7b59 AM |
189 | #define BLR 0x4e800020 /* blr */ |
190 | ||
41bd81ab AM |
191 | /* Since .opd is an array of descriptors and each entry will end up |
192 | with identical R_PPC64_RELATIVE relocs, there is really no need to | |
193 | propagate .opd relocs; The dynamic linker should be taught to | |
1e2f5b6e | 194 | relocate .opd without reloc entries. */ |
41bd81ab AM |
195 | #ifndef NO_OPD_RELOCS |
196 | #define NO_OPD_RELOCS 0 | |
197 | #endif | |
5bd4f169 | 198 | \f |
f5e87a1d | 199 | #define ONES(n) (((bfd_vma) 1 << ((n) - 1) << 1) - 1) |
b34976b6 | 200 | |
5bd4f169 | 201 | /* Relocation HOWTO's. */ |
04c9666a | 202 | static reloc_howto_type *ppc64_elf_howto_table[(int) R_PPC64_max]; |
5bd4f169 AM |
203 | |
204 | static reloc_howto_type ppc64_elf_howto_raw[] = { | |
205 | /* This reloc does nothing. */ | |
206 | HOWTO (R_PPC64_NONE, /* type */ | |
207 | 0, /* rightshift */ | |
411e1bfb AM |
208 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
209 | 32, /* bitsize */ | |
b34976b6 | 210 | FALSE, /* pc_relative */ |
5bd4f169 | 211 | 0, /* bitpos */ |
f5e87a1d | 212 | complain_overflow_dont, /* complain_on_overflow */ |
5bd4f169 AM |
213 | bfd_elf_generic_reloc, /* special_function */ |
214 | "R_PPC64_NONE", /* name */ | |
b34976b6 | 215 | FALSE, /* partial_inplace */ |
d006db6c | 216 | 0, /* src_mask */ |
5bd4f169 | 217 | 0, /* dst_mask */ |
b34976b6 | 218 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
219 | |
220 | /* A standard 32 bit relocation. */ | |
221 | HOWTO (R_PPC64_ADDR32, /* type */ | |
222 | 0, /* rightshift */ | |
223 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
224 | 32, /* bitsize */ | |
b34976b6 | 225 | FALSE, /* pc_relative */ |
5bd4f169 AM |
226 | 0, /* bitpos */ |
227 | complain_overflow_bitfield, /* complain_on_overflow */ | |
228 | bfd_elf_generic_reloc, /* special_function */ | |
229 | "R_PPC64_ADDR32", /* name */ | |
b34976b6 | 230 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
231 | 0, /* src_mask */ |
232 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 233 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
234 | |
235 | /* An absolute 26 bit branch; the lower two bits must be zero. | |
236 | FIXME: we don't check that, we just clear them. */ | |
237 | HOWTO (R_PPC64_ADDR24, /* type */ | |
238 | 0, /* rightshift */ | |
239 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
240 | 26, /* bitsize */ | |
b34976b6 | 241 | FALSE, /* pc_relative */ |
5bd4f169 AM |
242 | 0, /* bitpos */ |
243 | complain_overflow_bitfield, /* complain_on_overflow */ | |
244 | bfd_elf_generic_reloc, /* special_function */ | |
245 | "R_PPC64_ADDR24", /* name */ | |
b34976b6 | 246 | FALSE, /* partial_inplace */ |
d006db6c | 247 | 0, /* src_mask */ |
f5e87a1d | 248 | 0x03fffffc, /* dst_mask */ |
b34976b6 | 249 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
250 | |
251 | /* A standard 16 bit relocation. */ | |
252 | HOWTO (R_PPC64_ADDR16, /* type */ | |
253 | 0, /* rightshift */ | |
254 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
255 | 16, /* bitsize */ | |
b34976b6 | 256 | FALSE, /* pc_relative */ |
5bd4f169 AM |
257 | 0, /* bitpos */ |
258 | complain_overflow_bitfield, /* complain_on_overflow */ | |
259 | bfd_elf_generic_reloc, /* special_function */ | |
260 | "R_PPC64_ADDR16", /* name */ | |
b34976b6 | 261 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
262 | 0, /* src_mask */ |
263 | 0xffff, /* dst_mask */ | |
b34976b6 | 264 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
265 | |
266 | /* A 16 bit relocation without overflow. */ | |
267 | HOWTO (R_PPC64_ADDR16_LO, /* type */ | |
268 | 0, /* rightshift */ | |
269 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
270 | 16, /* bitsize */ | |
b34976b6 | 271 | FALSE, /* pc_relative */ |
5bd4f169 AM |
272 | 0, /* bitpos */ |
273 | complain_overflow_dont,/* complain_on_overflow */ | |
274 | bfd_elf_generic_reloc, /* special_function */ | |
275 | "R_PPC64_ADDR16_LO", /* name */ | |
b34976b6 | 276 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
277 | 0, /* src_mask */ |
278 | 0xffff, /* dst_mask */ | |
b34976b6 | 279 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
280 | |
281 | /* Bits 16-31 of an address. */ | |
282 | HOWTO (R_PPC64_ADDR16_HI, /* type */ | |
283 | 16, /* rightshift */ | |
284 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
285 | 16, /* bitsize */ | |
b34976b6 | 286 | FALSE, /* pc_relative */ |
5bd4f169 AM |
287 | 0, /* bitpos */ |
288 | complain_overflow_dont, /* complain_on_overflow */ | |
289 | bfd_elf_generic_reloc, /* special_function */ | |
290 | "R_PPC64_ADDR16_HI", /* name */ | |
b34976b6 | 291 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
292 | 0, /* src_mask */ |
293 | 0xffff, /* dst_mask */ | |
b34976b6 | 294 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
295 | |
296 | /* Bits 16-31 of an address, plus 1 if the contents of the low 16 | |
297 | bits, treated as a signed number, is negative. */ | |
298 | HOWTO (R_PPC64_ADDR16_HA, /* type */ | |
299 | 16, /* rightshift */ | |
300 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
301 | 16, /* bitsize */ | |
b34976b6 | 302 | FALSE, /* pc_relative */ |
5bd4f169 AM |
303 | 0, /* bitpos */ |
304 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 305 | ppc64_elf_ha_reloc, /* special_function */ |
5bd4f169 | 306 | "R_PPC64_ADDR16_HA", /* name */ |
b34976b6 | 307 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
308 | 0, /* src_mask */ |
309 | 0xffff, /* dst_mask */ | |
b34976b6 | 310 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
311 | |
312 | /* An absolute 16 bit branch; the lower two bits must be zero. | |
313 | FIXME: we don't check that, we just clear them. */ | |
314 | HOWTO (R_PPC64_ADDR14, /* type */ | |
315 | 0, /* rightshift */ | |
316 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
317 | 16, /* bitsize */ | |
b34976b6 | 318 | FALSE, /* pc_relative */ |
5bd4f169 AM |
319 | 0, /* bitpos */ |
320 | complain_overflow_bitfield, /* complain_on_overflow */ | |
2441e016 | 321 | ppc64_elf_branch_reloc, /* special_function */ |
5bd4f169 | 322 | "R_PPC64_ADDR14", /* name */ |
b34976b6 | 323 | FALSE, /* partial_inplace */ |
d006db6c | 324 | 0, /* src_mask */ |
f5e87a1d | 325 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 326 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
327 | |
328 | /* An absolute 16 bit branch, for which bit 10 should be set to | |
329 | indicate that the branch is expected to be taken. The lower two | |
330 | bits must be zero. */ | |
331 | HOWTO (R_PPC64_ADDR14_BRTAKEN, /* type */ | |
332 | 0, /* rightshift */ | |
333 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
334 | 16, /* bitsize */ | |
b34976b6 | 335 | FALSE, /* pc_relative */ |
5bd4f169 AM |
336 | 0, /* bitpos */ |
337 | complain_overflow_bitfield, /* complain_on_overflow */ | |
805fc799 | 338 | ppc64_elf_brtaken_reloc, /* special_function */ |
5bd4f169 | 339 | "R_PPC64_ADDR14_BRTAKEN",/* name */ |
b34976b6 | 340 | FALSE, /* partial_inplace */ |
d006db6c | 341 | 0, /* src_mask */ |
f5e87a1d | 342 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 343 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
344 | |
345 | /* An absolute 16 bit branch, for which bit 10 should be set to | |
346 | indicate that the branch is not expected to be taken. The lower | |
347 | two bits must be zero. */ | |
348 | HOWTO (R_PPC64_ADDR14_BRNTAKEN, /* type */ | |
349 | 0, /* rightshift */ | |
350 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
351 | 16, /* bitsize */ | |
b34976b6 | 352 | FALSE, /* pc_relative */ |
5bd4f169 AM |
353 | 0, /* bitpos */ |
354 | complain_overflow_bitfield, /* complain_on_overflow */ | |
805fc799 | 355 | ppc64_elf_brtaken_reloc, /* special_function */ |
5bd4f169 | 356 | "R_PPC64_ADDR14_BRNTAKEN",/* name */ |
b34976b6 | 357 | FALSE, /* partial_inplace */ |
d006db6c | 358 | 0, /* src_mask */ |
f5e87a1d | 359 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 360 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
361 | |
362 | /* A relative 26 bit branch; the lower two bits must be zero. */ | |
363 | HOWTO (R_PPC64_REL24, /* type */ | |
364 | 0, /* rightshift */ | |
365 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
366 | 26, /* bitsize */ | |
b34976b6 | 367 | TRUE, /* pc_relative */ |
5bd4f169 AM |
368 | 0, /* bitpos */ |
369 | complain_overflow_signed, /* complain_on_overflow */ | |
2441e016 | 370 | ppc64_elf_branch_reloc, /* special_function */ |
5bd4f169 | 371 | "R_PPC64_REL24", /* name */ |
b34976b6 | 372 | FALSE, /* partial_inplace */ |
d006db6c | 373 | 0, /* src_mask */ |
f5e87a1d | 374 | 0x03fffffc, /* dst_mask */ |
b34976b6 | 375 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
376 | |
377 | /* A relative 16 bit branch; the lower two bits must be zero. */ | |
378 | HOWTO (R_PPC64_REL14, /* type */ | |
379 | 0, /* rightshift */ | |
380 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
381 | 16, /* bitsize */ | |
b34976b6 | 382 | TRUE, /* pc_relative */ |
5bd4f169 AM |
383 | 0, /* bitpos */ |
384 | complain_overflow_signed, /* complain_on_overflow */ | |
2441e016 | 385 | ppc64_elf_branch_reloc, /* special_function */ |
5bd4f169 | 386 | "R_PPC64_REL14", /* name */ |
b34976b6 | 387 | FALSE, /* partial_inplace */ |
d006db6c | 388 | 0, /* src_mask */ |
f5e87a1d | 389 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 390 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
391 | |
392 | /* A relative 16 bit branch. Bit 10 should be set to indicate that | |
393 | the branch is expected to be taken. The lower two bits must be | |
394 | zero. */ | |
395 | HOWTO (R_PPC64_REL14_BRTAKEN, /* type */ | |
396 | 0, /* rightshift */ | |
397 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
398 | 16, /* bitsize */ | |
b34976b6 | 399 | TRUE, /* pc_relative */ |
5bd4f169 AM |
400 | 0, /* bitpos */ |
401 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 402 | ppc64_elf_brtaken_reloc, /* special_function */ |
5bd4f169 | 403 | "R_PPC64_REL14_BRTAKEN", /* name */ |
b34976b6 | 404 | FALSE, /* partial_inplace */ |
d006db6c | 405 | 0, /* src_mask */ |
f5e87a1d | 406 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 407 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
408 | |
409 | /* A relative 16 bit branch. Bit 10 should be set to indicate that | |
410 | the branch is not expected to be taken. The lower two bits must | |
411 | be zero. */ | |
412 | HOWTO (R_PPC64_REL14_BRNTAKEN, /* type */ | |
413 | 0, /* rightshift */ | |
414 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
415 | 16, /* bitsize */ | |
b34976b6 | 416 | TRUE, /* pc_relative */ |
5bd4f169 AM |
417 | 0, /* bitpos */ |
418 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 419 | ppc64_elf_brtaken_reloc, /* special_function */ |
5bd4f169 | 420 | "R_PPC64_REL14_BRNTAKEN",/* name */ |
b34976b6 | 421 | FALSE, /* partial_inplace */ |
d006db6c | 422 | 0, /* src_mask */ |
f5e87a1d | 423 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 424 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
425 | |
426 | /* Like R_PPC64_ADDR16, but referring to the GOT table entry for the | |
427 | symbol. */ | |
428 | HOWTO (R_PPC64_GOT16, /* type */ | |
429 | 0, /* rightshift */ | |
430 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
431 | 16, /* bitsize */ | |
b34976b6 | 432 | FALSE, /* pc_relative */ |
5bd4f169 AM |
433 | 0, /* bitpos */ |
434 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 435 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 436 | "R_PPC64_GOT16", /* name */ |
b34976b6 | 437 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
438 | 0, /* src_mask */ |
439 | 0xffff, /* dst_mask */ | |
b34976b6 | 440 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
441 | |
442 | /* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for | |
443 | the symbol. */ | |
444 | HOWTO (R_PPC64_GOT16_LO, /* type */ | |
445 | 0, /* rightshift */ | |
446 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
447 | 16, /* bitsize */ | |
b34976b6 | 448 | FALSE, /* pc_relative */ |
5bd4f169 AM |
449 | 0, /* bitpos */ |
450 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 451 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 452 | "R_PPC64_GOT16_LO", /* name */ |
b34976b6 | 453 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
454 | 0, /* src_mask */ |
455 | 0xffff, /* dst_mask */ | |
b34976b6 | 456 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
457 | |
458 | /* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for | |
459 | the symbol. */ | |
460 | HOWTO (R_PPC64_GOT16_HI, /* type */ | |
461 | 16, /* rightshift */ | |
462 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
463 | 16, /* bitsize */ | |
b34976b6 | 464 | FALSE, /* pc_relative */ |
5bd4f169 AM |
465 | 0, /* bitpos */ |
466 | complain_overflow_dont,/* complain_on_overflow */ | |
805fc799 | 467 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 468 | "R_PPC64_GOT16_HI", /* name */ |
b34976b6 | 469 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
470 | 0, /* src_mask */ |
471 | 0xffff, /* dst_mask */ | |
b34976b6 | 472 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
473 | |
474 | /* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for | |
475 | the symbol. */ | |
476 | HOWTO (R_PPC64_GOT16_HA, /* type */ | |
477 | 16, /* rightshift */ | |
478 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
479 | 16, /* bitsize */ | |
b34976b6 | 480 | FALSE, /* pc_relative */ |
5bd4f169 AM |
481 | 0, /* bitpos */ |
482 | complain_overflow_dont,/* complain_on_overflow */ | |
805fc799 | 483 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 484 | "R_PPC64_GOT16_HA", /* name */ |
b34976b6 | 485 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
486 | 0, /* src_mask */ |
487 | 0xffff, /* dst_mask */ | |
b34976b6 | 488 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
489 | |
490 | /* This is used only by the dynamic linker. The symbol should exist | |
491 | both in the object being run and in some shared library. The | |
492 | dynamic linker copies the data addressed by the symbol from the | |
493 | shared library into the object, because the object being | |
494 | run has to have the data at some particular address. */ | |
495 | HOWTO (R_PPC64_COPY, /* type */ | |
496 | 0, /* rightshift */ | |
f5e87a1d AM |
497 | 0, /* this one is variable size */ |
498 | 0, /* bitsize */ | |
b34976b6 | 499 | FALSE, /* pc_relative */ |
5bd4f169 | 500 | 0, /* bitpos */ |
f5e87a1d AM |
501 | complain_overflow_dont, /* complain_on_overflow */ |
502 | ppc64_elf_unhandled_reloc, /* special_function */ | |
5bd4f169 | 503 | "R_PPC64_COPY", /* name */ |
b34976b6 | 504 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
505 | 0, /* src_mask */ |
506 | 0, /* dst_mask */ | |
b34976b6 | 507 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
508 | |
509 | /* Like R_PPC64_ADDR64, but used when setting global offset table | |
510 | entries. */ | |
511 | HOWTO (R_PPC64_GLOB_DAT, /* type */ | |
512 | 0, /* rightshift */ | |
513 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
514 | 64, /* bitsize */ | |
b34976b6 | 515 | FALSE, /* pc_relative */ |
5bd4f169 AM |
516 | 0, /* bitpos */ |
517 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 518 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 519 | "R_PPC64_GLOB_DAT", /* name */ |
b34976b6 | 520 | FALSE, /* partial_inplace */ |
5bd4f169 | 521 | 0, /* src_mask */ |
f5e87a1d | 522 | ONES (64), /* dst_mask */ |
b34976b6 | 523 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
524 | |
525 | /* Created by the link editor. Marks a procedure linkage table | |
526 | entry for a symbol. */ | |
527 | HOWTO (R_PPC64_JMP_SLOT, /* type */ | |
528 | 0, /* rightshift */ | |
529 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
530 | 0, /* bitsize */ | |
b34976b6 | 531 | FALSE, /* pc_relative */ |
5bd4f169 AM |
532 | 0, /* bitpos */ |
533 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 534 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 535 | "R_PPC64_JMP_SLOT", /* name */ |
b34976b6 | 536 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
537 | 0, /* src_mask */ |
538 | 0, /* dst_mask */ | |
b34976b6 | 539 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
540 | |
541 | /* Used only by the dynamic linker. When the object is run, this | |
542 | doubleword64 is set to the load address of the object, plus the | |
543 | addend. */ | |
544 | HOWTO (R_PPC64_RELATIVE, /* type */ | |
545 | 0, /* rightshift */ | |
546 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
547 | 64, /* bitsize */ | |
b34976b6 | 548 | FALSE, /* pc_relative */ |
5bd4f169 AM |
549 | 0, /* bitpos */ |
550 | complain_overflow_dont, /* complain_on_overflow */ | |
551 | bfd_elf_generic_reloc, /* special_function */ | |
552 | "R_PPC64_RELATIVE", /* name */ | |
b34976b6 | 553 | FALSE, /* partial_inplace */ |
5bd4f169 | 554 | 0, /* src_mask */ |
f5e87a1d | 555 | ONES (64), /* dst_mask */ |
b34976b6 | 556 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
557 | |
558 | /* Like R_PPC64_ADDR32, but may be unaligned. */ | |
559 | HOWTO (R_PPC64_UADDR32, /* type */ | |
560 | 0, /* rightshift */ | |
561 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
562 | 32, /* bitsize */ | |
b34976b6 | 563 | FALSE, /* pc_relative */ |
5bd4f169 AM |
564 | 0, /* bitpos */ |
565 | complain_overflow_bitfield, /* complain_on_overflow */ | |
566 | bfd_elf_generic_reloc, /* special_function */ | |
567 | "R_PPC64_UADDR32", /* name */ | |
b34976b6 | 568 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
569 | 0, /* src_mask */ |
570 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 571 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
572 | |
573 | /* Like R_PPC64_ADDR16, but may be unaligned. */ | |
574 | HOWTO (R_PPC64_UADDR16, /* type */ | |
575 | 0, /* rightshift */ | |
576 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
577 | 16, /* bitsize */ | |
b34976b6 | 578 | FALSE, /* pc_relative */ |
5bd4f169 AM |
579 | 0, /* bitpos */ |
580 | complain_overflow_bitfield, /* complain_on_overflow */ | |
581 | bfd_elf_generic_reloc, /* special_function */ | |
582 | "R_PPC64_UADDR16", /* name */ | |
b34976b6 | 583 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
584 | 0, /* src_mask */ |
585 | 0xffff, /* dst_mask */ | |
b34976b6 | 586 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
587 | |
588 | /* 32-bit PC relative. */ | |
589 | HOWTO (R_PPC64_REL32, /* type */ | |
590 | 0, /* rightshift */ | |
591 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
592 | 32, /* bitsize */ | |
b34976b6 | 593 | TRUE, /* pc_relative */ |
5bd4f169 | 594 | 0, /* bitpos */ |
cedb70c5 | 595 | /* FIXME: Verify. Was complain_overflow_bitfield. */ |
5bd4f169 AM |
596 | complain_overflow_signed, /* complain_on_overflow */ |
597 | bfd_elf_generic_reloc, /* special_function */ | |
598 | "R_PPC64_REL32", /* name */ | |
b34976b6 | 599 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
600 | 0, /* src_mask */ |
601 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 602 | TRUE), /* pcrel_offset */ |
5bd4f169 | 603 | |
10ed1bba | 604 | /* 32-bit relocation to the symbol's procedure linkage table. */ |
5bd4f169 AM |
605 | HOWTO (R_PPC64_PLT32, /* type */ |
606 | 0, /* rightshift */ | |
607 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
608 | 32, /* bitsize */ | |
b34976b6 | 609 | FALSE, /* pc_relative */ |
5bd4f169 AM |
610 | 0, /* bitpos */ |
611 | complain_overflow_bitfield, /* complain_on_overflow */ | |
805fc799 | 612 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 613 | "R_PPC64_PLT32", /* name */ |
b34976b6 | 614 | FALSE, /* partial_inplace */ |
5bd4f169 | 615 | 0, /* src_mask */ |
f5e87a1d | 616 | 0xffffffff, /* dst_mask */ |
b34976b6 | 617 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
618 | |
619 | /* 32-bit PC relative relocation to the symbol's procedure linkage table. | |
620 | FIXME: R_PPC64_PLTREL32 not supported. */ | |
621 | HOWTO (R_PPC64_PLTREL32, /* type */ | |
622 | 0, /* rightshift */ | |
623 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
624 | 32, /* bitsize */ | |
b34976b6 | 625 | TRUE, /* pc_relative */ |
5bd4f169 AM |
626 | 0, /* bitpos */ |
627 | complain_overflow_signed, /* complain_on_overflow */ | |
628 | bfd_elf_generic_reloc, /* special_function */ | |
629 | "R_PPC64_PLTREL32", /* name */ | |
b34976b6 | 630 | FALSE, /* partial_inplace */ |
5bd4f169 | 631 | 0, /* src_mask */ |
f5e87a1d | 632 | 0xffffffff, /* dst_mask */ |
b34976b6 | 633 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
634 | |
635 | /* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for | |
636 | the symbol. */ | |
637 | HOWTO (R_PPC64_PLT16_LO, /* type */ | |
638 | 0, /* rightshift */ | |
639 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
640 | 16, /* bitsize */ | |
b34976b6 | 641 | FALSE, /* pc_relative */ |
5bd4f169 AM |
642 | 0, /* bitpos */ |
643 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 644 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 645 | "R_PPC64_PLT16_LO", /* name */ |
b34976b6 | 646 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
647 | 0, /* src_mask */ |
648 | 0xffff, /* dst_mask */ | |
b34976b6 | 649 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
650 | |
651 | /* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for | |
652 | the symbol. */ | |
653 | HOWTO (R_PPC64_PLT16_HI, /* type */ | |
654 | 16, /* rightshift */ | |
655 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
656 | 16, /* bitsize */ | |
b34976b6 | 657 | FALSE, /* pc_relative */ |
5bd4f169 AM |
658 | 0, /* bitpos */ |
659 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 660 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 661 | "R_PPC64_PLT16_HI", /* name */ |
b34976b6 | 662 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
663 | 0, /* src_mask */ |
664 | 0xffff, /* dst_mask */ | |
b34976b6 | 665 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
666 | |
667 | /* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for | |
668 | the symbol. */ | |
669 | HOWTO (R_PPC64_PLT16_HA, /* type */ | |
670 | 16, /* rightshift */ | |
671 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
672 | 16, /* bitsize */ | |
b34976b6 | 673 | FALSE, /* pc_relative */ |
5bd4f169 AM |
674 | 0, /* bitpos */ |
675 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 676 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 677 | "R_PPC64_PLT16_HA", /* name */ |
b34976b6 | 678 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
679 | 0, /* src_mask */ |
680 | 0xffff, /* dst_mask */ | |
b34976b6 | 681 | FALSE), /* pcrel_offset */ |
5bd4f169 | 682 | |
c061c2d8 | 683 | /* 16-bit section relative relocation. */ |
5bd4f169 AM |
684 | HOWTO (R_PPC64_SECTOFF, /* type */ |
685 | 0, /* rightshift */ | |
c061c2d8 AM |
686 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
687 | 16, /* bitsize */ | |
b34976b6 | 688 | FALSE, /* pc_relative */ |
5bd4f169 AM |
689 | 0, /* bitpos */ |
690 | complain_overflow_bitfield, /* complain_on_overflow */ | |
805fc799 | 691 | ppc64_elf_sectoff_reloc, /* special_function */ |
5bd4f169 | 692 | "R_PPC64_SECTOFF", /* name */ |
b34976b6 | 693 | FALSE, /* partial_inplace */ |
5bd4f169 | 694 | 0, /* src_mask */ |
c061c2d8 | 695 | 0xffff, /* dst_mask */ |
b34976b6 | 696 | FALSE), /* pcrel_offset */ |
5bd4f169 | 697 | |
c061c2d8 | 698 | /* Like R_PPC64_SECTOFF, but no overflow warning. */ |
5bd4f169 AM |
699 | HOWTO (R_PPC64_SECTOFF_LO, /* type */ |
700 | 0, /* rightshift */ | |
701 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
702 | 16, /* bitsize */ | |
b34976b6 | 703 | FALSE, /* pc_relative */ |
5bd4f169 AM |
704 | 0, /* bitpos */ |
705 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 706 | ppc64_elf_sectoff_reloc, /* special_function */ |
5bd4f169 | 707 | "R_PPC64_SECTOFF_LO", /* name */ |
b34976b6 | 708 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
709 | 0, /* src_mask */ |
710 | 0xffff, /* dst_mask */ | |
b34976b6 | 711 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
712 | |
713 | /* 16-bit upper half section relative relocation. */ | |
714 | HOWTO (R_PPC64_SECTOFF_HI, /* type */ | |
715 | 16, /* rightshift */ | |
716 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
717 | 16, /* bitsize */ | |
b34976b6 | 718 | FALSE, /* pc_relative */ |
5bd4f169 AM |
719 | 0, /* bitpos */ |
720 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 721 | ppc64_elf_sectoff_reloc, /* special_function */ |
5bd4f169 | 722 | "R_PPC64_SECTOFF_HI", /* name */ |
b34976b6 | 723 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
724 | 0, /* src_mask */ |
725 | 0xffff, /* dst_mask */ | |
b34976b6 | 726 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
727 | |
728 | /* 16-bit upper half adjusted section relative relocation. */ | |
729 | HOWTO (R_PPC64_SECTOFF_HA, /* type */ | |
730 | 16, /* rightshift */ | |
731 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
732 | 16, /* bitsize */ | |
b34976b6 | 733 | FALSE, /* pc_relative */ |
5bd4f169 AM |
734 | 0, /* bitpos */ |
735 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 736 | ppc64_elf_sectoff_ha_reloc, /* special_function */ |
5bd4f169 | 737 | "R_PPC64_SECTOFF_HA", /* name */ |
b34976b6 | 738 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
739 | 0, /* src_mask */ |
740 | 0xffff, /* dst_mask */ | |
b34976b6 | 741 | FALSE), /* pcrel_offset */ |
5bd4f169 | 742 | |
04c9666a AM |
743 | /* Like R_PPC64_REL24 without touching the two least significant bits. */ |
744 | HOWTO (R_PPC64_REL30, /* type */ | |
5bd4f169 AM |
745 | 2, /* rightshift */ |
746 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
747 | 30, /* bitsize */ | |
b34976b6 | 748 | TRUE, /* pc_relative */ |
5bd4f169 AM |
749 | 0, /* bitpos */ |
750 | complain_overflow_dont, /* complain_on_overflow */ | |
751 | bfd_elf_generic_reloc, /* special_function */ | |
04c9666a | 752 | "R_PPC64_REL30", /* name */ |
b34976b6 | 753 | FALSE, /* partial_inplace */ |
d006db6c | 754 | 0, /* src_mask */ |
5bd4f169 | 755 | 0xfffffffc, /* dst_mask */ |
b34976b6 | 756 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
757 | |
758 | /* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */ | |
759 | ||
760 | /* A standard 64-bit relocation. */ | |
761 | HOWTO (R_PPC64_ADDR64, /* type */ | |
762 | 0, /* rightshift */ | |
763 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
764 | 64, /* bitsize */ | |
b34976b6 | 765 | FALSE, /* pc_relative */ |
5bd4f169 AM |
766 | 0, /* bitpos */ |
767 | complain_overflow_dont, /* complain_on_overflow */ | |
768 | bfd_elf_generic_reloc, /* special_function */ | |
769 | "R_PPC64_ADDR64", /* name */ | |
b34976b6 | 770 | FALSE, /* partial_inplace */ |
5bd4f169 | 771 | 0, /* src_mask */ |
f5e87a1d | 772 | ONES (64), /* dst_mask */ |
b34976b6 | 773 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
774 | |
775 | /* The bits 32-47 of an address. */ | |
776 | HOWTO (R_PPC64_ADDR16_HIGHER, /* type */ | |
777 | 32, /* rightshift */ | |
778 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
779 | 16, /* bitsize */ | |
b34976b6 | 780 | FALSE, /* pc_relative */ |
5bd4f169 AM |
781 | 0, /* bitpos */ |
782 | complain_overflow_dont, /* complain_on_overflow */ | |
783 | bfd_elf_generic_reloc, /* special_function */ | |
784 | "R_PPC64_ADDR16_HIGHER", /* name */ | |
b34976b6 | 785 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
786 | 0, /* src_mask */ |
787 | 0xffff, /* dst_mask */ | |
b34976b6 | 788 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
789 | |
790 | /* The bits 32-47 of an address, plus 1 if the contents of the low | |
791 | 16 bits, treated as a signed number, is negative. */ | |
792 | HOWTO (R_PPC64_ADDR16_HIGHERA, /* type */ | |
793 | 32, /* rightshift */ | |
794 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
795 | 16, /* bitsize */ | |
b34976b6 | 796 | FALSE, /* pc_relative */ |
5bd4f169 AM |
797 | 0, /* bitpos */ |
798 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 799 | ppc64_elf_ha_reloc, /* special_function */ |
5bd4f169 | 800 | "R_PPC64_ADDR16_HIGHERA", /* name */ |
b34976b6 | 801 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
802 | 0, /* src_mask */ |
803 | 0xffff, /* dst_mask */ | |
b34976b6 | 804 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
805 | |
806 | /* The bits 48-63 of an address. */ | |
807 | HOWTO (R_PPC64_ADDR16_HIGHEST,/* type */ | |
808 | 48, /* rightshift */ | |
809 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
810 | 16, /* bitsize */ | |
b34976b6 | 811 | FALSE, /* pc_relative */ |
5bd4f169 AM |
812 | 0, /* bitpos */ |
813 | complain_overflow_dont, /* complain_on_overflow */ | |
814 | bfd_elf_generic_reloc, /* special_function */ | |
815 | "R_PPC64_ADDR16_HIGHEST", /* name */ | |
b34976b6 | 816 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
817 | 0, /* src_mask */ |
818 | 0xffff, /* dst_mask */ | |
b34976b6 | 819 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
820 | |
821 | /* The bits 48-63 of an address, plus 1 if the contents of the low | |
822 | 16 bits, treated as a signed number, is negative. */ | |
823 | HOWTO (R_PPC64_ADDR16_HIGHESTA,/* type */ | |
824 | 48, /* rightshift */ | |
825 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
826 | 16, /* bitsize */ | |
b34976b6 | 827 | FALSE, /* pc_relative */ |
5bd4f169 AM |
828 | 0, /* bitpos */ |
829 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 830 | ppc64_elf_ha_reloc, /* special_function */ |
5bd4f169 | 831 | "R_PPC64_ADDR16_HIGHESTA", /* name */ |
b34976b6 | 832 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
833 | 0, /* src_mask */ |
834 | 0xffff, /* dst_mask */ | |
b34976b6 | 835 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
836 | |
837 | /* Like ADDR64, but may be unaligned. */ | |
838 | HOWTO (R_PPC64_UADDR64, /* type */ | |
839 | 0, /* rightshift */ | |
840 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
841 | 64, /* bitsize */ | |
b34976b6 | 842 | FALSE, /* pc_relative */ |
5bd4f169 AM |
843 | 0, /* bitpos */ |
844 | complain_overflow_dont, /* complain_on_overflow */ | |
845 | bfd_elf_generic_reloc, /* special_function */ | |
846 | "R_PPC64_UADDR64", /* name */ | |
b34976b6 | 847 | FALSE, /* partial_inplace */ |
5bd4f169 | 848 | 0, /* src_mask */ |
f5e87a1d | 849 | ONES (64), /* dst_mask */ |
b34976b6 | 850 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
851 | |
852 | /* 64-bit relative relocation. */ | |
853 | HOWTO (R_PPC64_REL64, /* type */ | |
854 | 0, /* rightshift */ | |
855 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
856 | 64, /* bitsize */ | |
b34976b6 | 857 | TRUE, /* pc_relative */ |
5bd4f169 AM |
858 | 0, /* bitpos */ |
859 | complain_overflow_dont, /* complain_on_overflow */ | |
860 | bfd_elf_generic_reloc, /* special_function */ | |
861 | "R_PPC64_REL64", /* name */ | |
b34976b6 | 862 | FALSE, /* partial_inplace */ |
5bd4f169 | 863 | 0, /* src_mask */ |
f5e87a1d | 864 | ONES (64), /* dst_mask */ |
b34976b6 | 865 | TRUE), /* pcrel_offset */ |
5bd4f169 | 866 | |
cedb70c5 | 867 | /* 64-bit relocation to the symbol's procedure linkage table. */ |
5bd4f169 AM |
868 | HOWTO (R_PPC64_PLT64, /* type */ |
869 | 0, /* rightshift */ | |
870 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
871 | 64, /* bitsize */ | |
b34976b6 | 872 | FALSE, /* pc_relative */ |
5bd4f169 AM |
873 | 0, /* bitpos */ |
874 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 875 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 876 | "R_PPC64_PLT64", /* name */ |
b34976b6 | 877 | FALSE, /* partial_inplace */ |
5bd4f169 | 878 | 0, /* src_mask */ |
f5e87a1d | 879 | ONES (64), /* dst_mask */ |
b34976b6 | 880 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
881 | |
882 | /* 64-bit PC relative relocation to the symbol's procedure linkage | |
883 | table. */ | |
884 | /* FIXME: R_PPC64_PLTREL64 not supported. */ | |
885 | HOWTO (R_PPC64_PLTREL64, /* type */ | |
886 | 0, /* rightshift */ | |
887 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
888 | 64, /* bitsize */ | |
b34976b6 | 889 | TRUE, /* pc_relative */ |
5bd4f169 AM |
890 | 0, /* bitpos */ |
891 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 892 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 893 | "R_PPC64_PLTREL64", /* name */ |
b34976b6 | 894 | FALSE, /* partial_inplace */ |
5bd4f169 | 895 | 0, /* src_mask */ |
f5e87a1d | 896 | ONES (64), /* dst_mask */ |
b34976b6 | 897 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
898 | |
899 | /* 16 bit TOC-relative relocation. */ | |
900 | ||
901 | /* R_PPC64_TOC16 47 half16* S + A - .TOC. */ | |
902 | HOWTO (R_PPC64_TOC16, /* type */ | |
903 | 0, /* rightshift */ | |
904 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
905 | 16, /* bitsize */ | |
b34976b6 | 906 | FALSE, /* pc_relative */ |
5bd4f169 AM |
907 | 0, /* bitpos */ |
908 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 909 | ppc64_elf_toc_reloc, /* special_function */ |
5bd4f169 | 910 | "R_PPC64_TOC16", /* name */ |
b34976b6 | 911 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
912 | 0, /* src_mask */ |
913 | 0xffff, /* dst_mask */ | |
b34976b6 | 914 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
915 | |
916 | /* 16 bit TOC-relative relocation without overflow. */ | |
917 | ||
918 | /* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */ | |
919 | HOWTO (R_PPC64_TOC16_LO, /* type */ | |
920 | 0, /* rightshift */ | |
921 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
922 | 16, /* bitsize */ | |
b34976b6 | 923 | FALSE, /* pc_relative */ |
5bd4f169 AM |
924 | 0, /* bitpos */ |
925 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 926 | ppc64_elf_toc_reloc, /* special_function */ |
5bd4f169 | 927 | "R_PPC64_TOC16_LO", /* name */ |
b34976b6 | 928 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
929 | 0, /* src_mask */ |
930 | 0xffff, /* dst_mask */ | |
b34976b6 | 931 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
932 | |
933 | /* 16 bit TOC-relative relocation, high 16 bits. */ | |
934 | ||
935 | /* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */ | |
936 | HOWTO (R_PPC64_TOC16_HI, /* type */ | |
937 | 16, /* rightshift */ | |
938 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
939 | 16, /* bitsize */ | |
b34976b6 | 940 | FALSE, /* pc_relative */ |
5bd4f169 AM |
941 | 0, /* bitpos */ |
942 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 943 | ppc64_elf_toc_reloc, /* special_function */ |
5bd4f169 | 944 | "R_PPC64_TOC16_HI", /* name */ |
b34976b6 | 945 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
946 | 0, /* src_mask */ |
947 | 0xffff, /* dst_mask */ | |
b34976b6 | 948 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
949 | |
950 | /* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the | |
951 | contents of the low 16 bits, treated as a signed number, is | |
952 | negative. */ | |
953 | ||
954 | /* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */ | |
955 | HOWTO (R_PPC64_TOC16_HA, /* type */ | |
956 | 16, /* rightshift */ | |
957 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
958 | 16, /* bitsize */ | |
b34976b6 | 959 | FALSE, /* pc_relative */ |
5bd4f169 AM |
960 | 0, /* bitpos */ |
961 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 962 | ppc64_elf_toc_ha_reloc, /* special_function */ |
5bd4f169 | 963 | "R_PPC64_TOC16_HA", /* name */ |
b34976b6 | 964 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
965 | 0, /* src_mask */ |
966 | 0xffff, /* dst_mask */ | |
b34976b6 | 967 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
968 | |
969 | /* 64-bit relocation; insert value of TOC base (.TOC.). */ | |
970 | ||
971 | /* R_PPC64_TOC 51 doubleword64 .TOC. */ | |
972 | HOWTO (R_PPC64_TOC, /* type */ | |
973 | 0, /* rightshift */ | |
974 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
975 | 64, /* bitsize */ | |
b34976b6 | 976 | FALSE, /* pc_relative */ |
5bd4f169 AM |
977 | 0, /* bitpos */ |
978 | complain_overflow_bitfield, /* complain_on_overflow */ | |
805fc799 | 979 | ppc64_elf_toc64_reloc, /* special_function */ |
5bd4f169 | 980 | "R_PPC64_TOC", /* name */ |
b34976b6 | 981 | FALSE, /* partial_inplace */ |
5bd4f169 | 982 | 0, /* src_mask */ |
f5e87a1d | 983 | ONES (64), /* dst_mask */ |
b34976b6 | 984 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
985 | |
986 | /* Like R_PPC64_GOT16, but also informs the link editor that the | |
987 | value to relocate may (!) refer to a PLT entry which the link | |
988 | editor (a) may replace with the symbol value. If the link editor | |
989 | is unable to fully resolve the symbol, it may (b) create a PLT | |
990 | entry and store the address to the new PLT entry in the GOT. | |
991 | This permits lazy resolution of function symbols at run time. | |
992 | The link editor may also skip all of this and just (c) emit a | |
993 | R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */ | |
994 | /* FIXME: R_PPC64_PLTGOT16 not implemented. */ | |
995 | HOWTO (R_PPC64_PLTGOT16, /* type */ | |
996 | 0, /* rightshift */ | |
997 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
998 | 16, /* bitsize */ | |
b34976b6 | 999 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1000 | 0, /* bitpos */ |
1001 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 1002 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb AM |
1003 | "R_PPC64_PLTGOT16", /* name */ |
1004 | FALSE, /* partial_inplace */ | |
1005 | 0, /* src_mask */ | |
1006 | 0xffff, /* dst_mask */ | |
1007 | FALSE), /* pcrel_offset */ | |
1008 | ||
1009 | /* Like R_PPC64_PLTGOT16, but without overflow. */ | |
1010 | /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */ | |
1011 | HOWTO (R_PPC64_PLTGOT16_LO, /* type */ | |
1012 | 0, /* rightshift */ | |
1013 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1014 | 16, /* bitsize */ | |
1015 | FALSE, /* pc_relative */ | |
1016 | 0, /* bitpos */ | |
1017 | complain_overflow_dont, /* complain_on_overflow */ | |
1018 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1019 | "R_PPC64_PLTGOT16_LO", /* name */ | |
1020 | FALSE, /* partial_inplace */ | |
1021 | 0, /* src_mask */ | |
1022 | 0xffff, /* dst_mask */ | |
1023 | FALSE), /* pcrel_offset */ | |
1024 | ||
1025 | /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */ | |
1026 | /* FIXME: R_PPC64_PLTGOT16_HI not implemented. */ | |
1027 | HOWTO (R_PPC64_PLTGOT16_HI, /* type */ | |
1028 | 16, /* rightshift */ | |
1029 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1030 | 16, /* bitsize */ | |
1031 | FALSE, /* pc_relative */ | |
1032 | 0, /* bitpos */ | |
1033 | complain_overflow_dont, /* complain_on_overflow */ | |
1034 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1035 | "R_PPC64_PLTGOT16_HI", /* name */ | |
1036 | FALSE, /* partial_inplace */ | |
1037 | 0, /* src_mask */ | |
1038 | 0xffff, /* dst_mask */ | |
1039 | FALSE), /* pcrel_offset */ | |
1040 | ||
1041 | /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus | |
1042 | 1 if the contents of the low 16 bits, treated as a signed number, | |
1043 | is negative. */ | |
1044 | /* FIXME: R_PPC64_PLTGOT16_HA not implemented. */ | |
1045 | HOWTO (R_PPC64_PLTGOT16_HA, /* type */ | |
1046 | 16, /* rightshift */ | |
1047 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1048 | 16, /* bitsize */ | |
1049 | FALSE, /* pc_relative */ | |
1050 | 0, /* bitpos */ | |
1051 | complain_overflow_dont,/* complain_on_overflow */ | |
1052 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1053 | "R_PPC64_PLTGOT16_HA", /* name */ | |
1054 | FALSE, /* partial_inplace */ | |
1055 | 0, /* src_mask */ | |
1056 | 0xffff, /* dst_mask */ | |
1057 | FALSE), /* pcrel_offset */ | |
1058 | ||
1059 | /* Like R_PPC64_ADDR16, but for instructions with a DS field. */ | |
1060 | HOWTO (R_PPC64_ADDR16_DS, /* type */ | |
1061 | 0, /* rightshift */ | |
1062 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1063 | 16, /* bitsize */ | |
1064 | FALSE, /* pc_relative */ | |
1065 | 0, /* bitpos */ | |
1066 | complain_overflow_bitfield, /* complain_on_overflow */ | |
1067 | bfd_elf_generic_reloc, /* special_function */ | |
1068 | "R_PPC64_ADDR16_DS", /* name */ | |
1069 | FALSE, /* partial_inplace */ | |
1070 | 0, /* src_mask */ | |
1071 | 0xfffc, /* dst_mask */ | |
1072 | FALSE), /* pcrel_offset */ | |
1073 | ||
1074 | /* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */ | |
1075 | HOWTO (R_PPC64_ADDR16_LO_DS, /* type */ | |
1076 | 0, /* rightshift */ | |
1077 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1078 | 16, /* bitsize */ | |
1079 | FALSE, /* pc_relative */ | |
1080 | 0, /* bitpos */ | |
1081 | complain_overflow_dont,/* complain_on_overflow */ | |
1082 | bfd_elf_generic_reloc, /* special_function */ | |
1083 | "R_PPC64_ADDR16_LO_DS",/* name */ | |
1084 | FALSE, /* partial_inplace */ | |
1085 | 0, /* src_mask */ | |
1086 | 0xfffc, /* dst_mask */ | |
1087 | FALSE), /* pcrel_offset */ | |
1088 | ||
1089 | /* Like R_PPC64_GOT16, but for instructions with a DS field. */ | |
1090 | HOWTO (R_PPC64_GOT16_DS, /* type */ | |
1091 | 0, /* rightshift */ | |
1092 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1093 | 16, /* bitsize */ | |
1094 | FALSE, /* pc_relative */ | |
1095 | 0, /* bitpos */ | |
1096 | complain_overflow_signed, /* complain_on_overflow */ | |
1097 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1098 | "R_PPC64_GOT16_DS", /* name */ | |
1099 | FALSE, /* partial_inplace */ | |
1100 | 0, /* src_mask */ | |
1101 | 0xfffc, /* dst_mask */ | |
1102 | FALSE), /* pcrel_offset */ | |
1103 | ||
1104 | /* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */ | |
1105 | HOWTO (R_PPC64_GOT16_LO_DS, /* type */ | |
1106 | 0, /* rightshift */ | |
1107 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1108 | 16, /* bitsize */ | |
1109 | FALSE, /* pc_relative */ | |
1110 | 0, /* bitpos */ | |
1111 | complain_overflow_dont, /* complain_on_overflow */ | |
1112 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1113 | "R_PPC64_GOT16_LO_DS", /* name */ | |
1114 | FALSE, /* partial_inplace */ | |
1115 | 0, /* src_mask */ | |
1116 | 0xfffc, /* dst_mask */ | |
1117 | FALSE), /* pcrel_offset */ | |
1118 | ||
1119 | /* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */ | |
1120 | HOWTO (R_PPC64_PLT16_LO_DS, /* type */ | |
1121 | 0, /* rightshift */ | |
1122 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1123 | 16, /* bitsize */ | |
1124 | FALSE, /* pc_relative */ | |
1125 | 0, /* bitpos */ | |
1126 | complain_overflow_dont, /* complain_on_overflow */ | |
1127 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1128 | "R_PPC64_PLT16_LO_DS", /* name */ | |
1129 | FALSE, /* partial_inplace */ | |
1130 | 0, /* src_mask */ | |
1131 | 0xfffc, /* dst_mask */ | |
1132 | FALSE), /* pcrel_offset */ | |
1133 | ||
1134 | /* Like R_PPC64_SECTOFF, but for instructions with a DS field. */ | |
1135 | HOWTO (R_PPC64_SECTOFF_DS, /* type */ | |
1136 | 0, /* rightshift */ | |
1137 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1138 | 16, /* bitsize */ | |
1139 | FALSE, /* pc_relative */ | |
1140 | 0, /* bitpos */ | |
1141 | complain_overflow_bitfield, /* complain_on_overflow */ | |
1142 | ppc64_elf_sectoff_reloc, /* special_function */ | |
1143 | "R_PPC64_SECTOFF_DS", /* name */ | |
1144 | FALSE, /* partial_inplace */ | |
1145 | 0, /* src_mask */ | |
1146 | 0xfffc, /* dst_mask */ | |
1147 | FALSE), /* pcrel_offset */ | |
1148 | ||
1149 | /* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */ | |
1150 | HOWTO (R_PPC64_SECTOFF_LO_DS, /* type */ | |
1151 | 0, /* rightshift */ | |
1152 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1153 | 16, /* bitsize */ | |
1154 | FALSE, /* pc_relative */ | |
1155 | 0, /* bitpos */ | |
1156 | complain_overflow_dont, /* complain_on_overflow */ | |
1157 | ppc64_elf_sectoff_reloc, /* special_function */ | |
1158 | "R_PPC64_SECTOFF_LO_DS",/* name */ | |
1159 | FALSE, /* partial_inplace */ | |
1160 | 0, /* src_mask */ | |
1161 | 0xfffc, /* dst_mask */ | |
1162 | FALSE), /* pcrel_offset */ | |
1163 | ||
1164 | /* Like R_PPC64_TOC16, but for instructions with a DS field. */ | |
1165 | HOWTO (R_PPC64_TOC16_DS, /* type */ | |
1166 | 0, /* rightshift */ | |
1167 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1168 | 16, /* bitsize */ | |
1169 | FALSE, /* pc_relative */ | |
1170 | 0, /* bitpos */ | |
1171 | complain_overflow_signed, /* complain_on_overflow */ | |
1172 | ppc64_elf_toc_reloc, /* special_function */ | |
1173 | "R_PPC64_TOC16_DS", /* name */ | |
1174 | FALSE, /* partial_inplace */ | |
1175 | 0, /* src_mask */ | |
1176 | 0xfffc, /* dst_mask */ | |
1177 | FALSE), /* pcrel_offset */ | |
1178 | ||
1179 | /* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */ | |
1180 | HOWTO (R_PPC64_TOC16_LO_DS, /* type */ | |
1181 | 0, /* rightshift */ | |
1182 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1183 | 16, /* bitsize */ | |
1184 | FALSE, /* pc_relative */ | |
1185 | 0, /* bitpos */ | |
1186 | complain_overflow_dont, /* complain_on_overflow */ | |
1187 | ppc64_elf_toc_reloc, /* special_function */ | |
1188 | "R_PPC64_TOC16_LO_DS", /* name */ | |
1189 | FALSE, /* partial_inplace */ | |
1190 | 0, /* src_mask */ | |
1191 | 0xfffc, /* dst_mask */ | |
1192 | FALSE), /* pcrel_offset */ | |
1193 | ||
1194 | /* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */ | |
1195 | /* FIXME: R_PPC64_PLTGOT16_DS not implemented. */ | |
1196 | HOWTO (R_PPC64_PLTGOT16_DS, /* type */ | |
1197 | 0, /* rightshift */ | |
1198 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1199 | 16, /* bitsize */ | |
1200 | FALSE, /* pc_relative */ | |
1201 | 0, /* bitpos */ | |
1202 | complain_overflow_signed, /* complain_on_overflow */ | |
1203 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1204 | "R_PPC64_PLTGOT16_DS", /* name */ | |
1205 | FALSE, /* partial_inplace */ | |
1206 | 0, /* src_mask */ | |
1207 | 0xfffc, /* dst_mask */ | |
1208 | FALSE), /* pcrel_offset */ | |
1209 | ||
1210 | /* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */ | |
1211 | /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */ | |
1212 | HOWTO (R_PPC64_PLTGOT16_LO_DS,/* type */ | |
1213 | 0, /* rightshift */ | |
1214 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1215 | 16, /* bitsize */ | |
1216 | FALSE, /* pc_relative */ | |
1217 | 0, /* bitpos */ | |
1218 | complain_overflow_dont, /* complain_on_overflow */ | |
1219 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1220 | "R_PPC64_PLTGOT16_LO_DS",/* name */ | |
1221 | FALSE, /* partial_inplace */ | |
1222 | 0, /* src_mask */ | |
1223 | 0xfffc, /* dst_mask */ | |
1224 | FALSE), /* pcrel_offset */ | |
1225 | ||
1226 | /* Marker reloc for TLS. */ | |
1227 | HOWTO (R_PPC64_TLS, | |
1228 | 0, /* rightshift */ | |
1229 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1230 | 32, /* bitsize */ | |
1231 | FALSE, /* pc_relative */ | |
1232 | 0, /* bitpos */ | |
1233 | complain_overflow_dont, /* complain_on_overflow */ | |
1234 | bfd_elf_generic_reloc, /* special_function */ | |
1235 | "R_PPC64_TLS", /* name */ | |
1236 | FALSE, /* partial_inplace */ | |
1237 | 0, /* src_mask */ | |
1238 | 0, /* dst_mask */ | |
1239 | FALSE), /* pcrel_offset */ | |
1240 | ||
1241 | /* Computes the load module index of the load module that contains the | |
1242 | definition of its TLS sym. */ | |
1243 | HOWTO (R_PPC64_DTPMOD64, | |
1244 | 0, /* rightshift */ | |
1245 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
1246 | 64, /* bitsize */ | |
1247 | FALSE, /* pc_relative */ | |
1248 | 0, /* bitpos */ | |
1249 | complain_overflow_dont, /* complain_on_overflow */ | |
1250 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1251 | "R_PPC64_DTPMOD64", /* name */ | |
1252 | FALSE, /* partial_inplace */ | |
1253 | 0, /* src_mask */ | |
1254 | ONES (64), /* dst_mask */ | |
1255 | FALSE), /* pcrel_offset */ | |
1256 | ||
1257 | /* Computes a dtv-relative displacement, the difference between the value | |
1258 | of sym+add and the base address of the thread-local storage block that | |
1259 | contains the definition of sym, minus 0x8000. */ | |
1260 | HOWTO (R_PPC64_DTPREL64, | |
1261 | 0, /* rightshift */ | |
1262 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
1263 | 64, /* bitsize */ | |
1264 | FALSE, /* pc_relative */ | |
1265 | 0, /* bitpos */ | |
1266 | complain_overflow_dont, /* complain_on_overflow */ | |
1267 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1268 | "R_PPC64_DTPREL64", /* name */ | |
1269 | FALSE, /* partial_inplace */ | |
1270 | 0, /* src_mask */ | |
1271 | ONES (64), /* dst_mask */ | |
1272 | FALSE), /* pcrel_offset */ | |
1273 | ||
1274 | /* A 16 bit dtprel reloc. */ | |
1275 | HOWTO (R_PPC64_DTPREL16, | |
1276 | 0, /* rightshift */ | |
1277 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1278 | 16, /* bitsize */ | |
1279 | FALSE, /* pc_relative */ | |
1280 | 0, /* bitpos */ | |
1281 | complain_overflow_signed, /* complain_on_overflow */ | |
1282 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1283 | "R_PPC64_DTPREL16", /* name */ | |
1284 | FALSE, /* partial_inplace */ | |
1285 | 0, /* src_mask */ | |
1286 | 0xffff, /* dst_mask */ | |
1287 | FALSE), /* pcrel_offset */ | |
1288 | ||
1289 | /* Like DTPREL16, but no overflow. */ | |
1290 | HOWTO (R_PPC64_DTPREL16_LO, | |
1291 | 0, /* rightshift */ | |
1292 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1293 | 16, /* bitsize */ | |
1294 | FALSE, /* pc_relative */ | |
1295 | 0, /* bitpos */ | |
1296 | complain_overflow_dont, /* complain_on_overflow */ | |
1297 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1298 | "R_PPC64_DTPREL16_LO", /* name */ | |
1299 | FALSE, /* partial_inplace */ | |
1300 | 0, /* src_mask */ | |
1301 | 0xffff, /* dst_mask */ | |
1302 | FALSE), /* pcrel_offset */ | |
1303 | ||
1304 | /* Like DTPREL16_LO, but next higher group of 16 bits. */ | |
1305 | HOWTO (R_PPC64_DTPREL16_HI, | |
1306 | 16, /* rightshift */ | |
1307 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1308 | 16, /* bitsize */ | |
1309 | FALSE, /* pc_relative */ | |
1310 | 0, /* bitpos */ | |
1311 | complain_overflow_dont, /* complain_on_overflow */ | |
1312 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1313 | "R_PPC64_DTPREL16_HI", /* name */ | |
1314 | FALSE, /* partial_inplace */ | |
1315 | 0, /* src_mask */ | |
1316 | 0xffff, /* dst_mask */ | |
1317 | FALSE), /* pcrel_offset */ | |
1318 | ||
1319 | /* Like DTPREL16_HI, but adjust for low 16 bits. */ | |
1320 | HOWTO (R_PPC64_DTPREL16_HA, | |
1321 | 16, /* rightshift */ | |
1322 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1323 | 16, /* bitsize */ | |
1324 | FALSE, /* pc_relative */ | |
1325 | 0, /* bitpos */ | |
1326 | complain_overflow_dont, /* complain_on_overflow */ | |
1327 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1328 | "R_PPC64_DTPREL16_HA", /* name */ | |
1329 | FALSE, /* partial_inplace */ | |
1330 | 0, /* src_mask */ | |
1331 | 0xffff, /* dst_mask */ | |
1332 | FALSE), /* pcrel_offset */ | |
1333 | ||
1334 | /* Like DTPREL16_HI, but next higher group of 16 bits. */ | |
1335 | HOWTO (R_PPC64_DTPREL16_HIGHER, | |
1336 | 32, /* rightshift */ | |
1337 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1338 | 16, /* bitsize */ | |
1339 | FALSE, /* pc_relative */ | |
1340 | 0, /* bitpos */ | |
1341 | complain_overflow_dont, /* complain_on_overflow */ | |
1342 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1343 | "R_PPC64_DTPREL16_HIGHER", /* name */ | |
1344 | FALSE, /* partial_inplace */ | |
1345 | 0, /* src_mask */ | |
1346 | 0xffff, /* dst_mask */ | |
1347 | FALSE), /* pcrel_offset */ | |
1348 | ||
1349 | /* Like DTPREL16_HIGHER, but adjust for low 16 bits. */ | |
1350 | HOWTO (R_PPC64_DTPREL16_HIGHERA, | |
1351 | 32, /* rightshift */ | |
1352 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1353 | 16, /* bitsize */ | |
1354 | FALSE, /* pc_relative */ | |
1355 | 0, /* bitpos */ | |
1356 | complain_overflow_dont, /* complain_on_overflow */ | |
1357 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1358 | "R_PPC64_DTPREL16_HIGHERA", /* name */ | |
1359 | FALSE, /* partial_inplace */ | |
1360 | 0, /* src_mask */ | |
1361 | 0xffff, /* dst_mask */ | |
1362 | FALSE), /* pcrel_offset */ | |
1363 | ||
1364 | /* Like DTPREL16_HIGHER, but next higher group of 16 bits. */ | |
1365 | HOWTO (R_PPC64_DTPREL16_HIGHEST, | |
1366 | 48, /* rightshift */ | |
1367 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1368 | 16, /* bitsize */ | |
1369 | FALSE, /* pc_relative */ | |
1370 | 0, /* bitpos */ | |
1371 | complain_overflow_dont, /* complain_on_overflow */ | |
1372 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1373 | "R_PPC64_DTPREL16_HIGHEST", /* name */ | |
1374 | FALSE, /* partial_inplace */ | |
1375 | 0, /* src_mask */ | |
1376 | 0xffff, /* dst_mask */ | |
1377 | FALSE), /* pcrel_offset */ | |
1378 | ||
1379 | /* Like DTPREL16_HIGHEST, but adjust for low 16 bits. */ | |
1380 | HOWTO (R_PPC64_DTPREL16_HIGHESTA, | |
1381 | 48, /* rightshift */ | |
1382 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1383 | 16, /* bitsize */ | |
1384 | FALSE, /* pc_relative */ | |
1385 | 0, /* bitpos */ | |
1386 | complain_overflow_dont, /* complain_on_overflow */ | |
1387 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1388 | "R_PPC64_DTPREL16_HIGHESTA", /* name */ | |
1389 | FALSE, /* partial_inplace */ | |
1390 | 0, /* src_mask */ | |
1391 | 0xffff, /* dst_mask */ | |
1392 | FALSE), /* pcrel_offset */ | |
1393 | ||
1394 | /* Like DTPREL16, but for insns with a DS field. */ | |
1395 | HOWTO (R_PPC64_DTPREL16_DS, | |
1396 | 0, /* rightshift */ | |
1397 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1398 | 16, /* bitsize */ | |
1399 | FALSE, /* pc_relative */ | |
1400 | 0, /* bitpos */ | |
1401 | complain_overflow_signed, /* complain_on_overflow */ | |
1402 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1403 | "R_PPC64_DTPREL16_DS", /* name */ | |
1404 | FALSE, /* partial_inplace */ | |
1405 | 0, /* src_mask */ | |
1406 | 0xfffc, /* dst_mask */ | |
1407 | FALSE), /* pcrel_offset */ | |
1408 | ||
1409 | /* Like DTPREL16_DS, but no overflow. */ | |
1410 | HOWTO (R_PPC64_DTPREL16_LO_DS, | |
1411 | 0, /* rightshift */ | |
1412 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1413 | 16, /* bitsize */ | |
1414 | FALSE, /* pc_relative */ | |
1415 | 0, /* bitpos */ | |
1416 | complain_overflow_dont, /* complain_on_overflow */ | |
1417 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1418 | "R_PPC64_DTPREL16_LO_DS", /* name */ | |
1419 | FALSE, /* partial_inplace */ | |
1420 | 0, /* src_mask */ | |
1421 | 0xfffc, /* dst_mask */ | |
1422 | FALSE), /* pcrel_offset */ | |
1423 | ||
1424 | /* Computes a tp-relative displacement, the difference between the value of | |
1425 | sym+add and the value of the thread pointer (r13). */ | |
1426 | HOWTO (R_PPC64_TPREL64, | |
1427 | 0, /* rightshift */ | |
1428 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
1429 | 64, /* bitsize */ | |
1430 | FALSE, /* pc_relative */ | |
1431 | 0, /* bitpos */ | |
1432 | complain_overflow_dont, /* complain_on_overflow */ | |
1433 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1434 | "R_PPC64_TPREL64", /* name */ | |
1435 | FALSE, /* partial_inplace */ | |
1436 | 0, /* src_mask */ | |
1437 | ONES (64), /* dst_mask */ | |
1438 | FALSE), /* pcrel_offset */ | |
1439 | ||
1440 | /* A 16 bit tprel reloc. */ | |
1441 | HOWTO (R_PPC64_TPREL16, | |
1442 | 0, /* rightshift */ | |
1443 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1444 | 16, /* bitsize */ | |
1445 | FALSE, /* pc_relative */ | |
1446 | 0, /* bitpos */ | |
1447 | complain_overflow_signed, /* complain_on_overflow */ | |
1448 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1449 | "R_PPC64_TPREL16", /* name */ | |
1450 | FALSE, /* partial_inplace */ | |
1451 | 0, /* src_mask */ | |
1452 | 0xffff, /* dst_mask */ | |
1453 | FALSE), /* pcrel_offset */ | |
1454 | ||
1455 | /* Like TPREL16, but no overflow. */ | |
1456 | HOWTO (R_PPC64_TPREL16_LO, | |
1457 | 0, /* rightshift */ | |
1458 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1459 | 16, /* bitsize */ | |
1460 | FALSE, /* pc_relative */ | |
1461 | 0, /* bitpos */ | |
1462 | complain_overflow_dont, /* complain_on_overflow */ | |
1463 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1464 | "R_PPC64_TPREL16_LO", /* name */ | |
1465 | FALSE, /* partial_inplace */ | |
1466 | 0, /* src_mask */ | |
1467 | 0xffff, /* dst_mask */ | |
1468 | FALSE), /* pcrel_offset */ | |
1469 | ||
1470 | /* Like TPREL16_LO, but next higher group of 16 bits. */ | |
1471 | HOWTO (R_PPC64_TPREL16_HI, | |
1472 | 16, /* rightshift */ | |
1473 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1474 | 16, /* bitsize */ | |
1475 | FALSE, /* pc_relative */ | |
1476 | 0, /* bitpos */ | |
1477 | complain_overflow_dont, /* complain_on_overflow */ | |
1478 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1479 | "R_PPC64_TPREL16_HI", /* name */ | |
1480 | FALSE, /* partial_inplace */ | |
1481 | 0, /* src_mask */ | |
1482 | 0xffff, /* dst_mask */ | |
1483 | FALSE), /* pcrel_offset */ | |
1484 | ||
1485 | /* Like TPREL16_HI, but adjust for low 16 bits. */ | |
1486 | HOWTO (R_PPC64_TPREL16_HA, | |
1487 | 16, /* rightshift */ | |
1488 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1489 | 16, /* bitsize */ | |
1490 | FALSE, /* pc_relative */ | |
1491 | 0, /* bitpos */ | |
1492 | complain_overflow_dont, /* complain_on_overflow */ | |
1493 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1494 | "R_PPC64_TPREL16_HA", /* name */ | |
1495 | FALSE, /* partial_inplace */ | |
1496 | 0, /* src_mask */ | |
1497 | 0xffff, /* dst_mask */ | |
1498 | FALSE), /* pcrel_offset */ | |
1499 | ||
1500 | /* Like TPREL16_HI, but next higher group of 16 bits. */ | |
1501 | HOWTO (R_PPC64_TPREL16_HIGHER, | |
1502 | 32, /* rightshift */ | |
1503 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1504 | 16, /* bitsize */ | |
1505 | FALSE, /* pc_relative */ | |
1506 | 0, /* bitpos */ | |
1507 | complain_overflow_dont, /* complain_on_overflow */ | |
1508 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1509 | "R_PPC64_TPREL16_HIGHER", /* name */ | |
1510 | FALSE, /* partial_inplace */ | |
1511 | 0, /* src_mask */ | |
1512 | 0xffff, /* dst_mask */ | |
1513 | FALSE), /* pcrel_offset */ | |
1514 | ||
1515 | /* Like TPREL16_HIGHER, but adjust for low 16 bits. */ | |
1516 | HOWTO (R_PPC64_TPREL16_HIGHERA, | |
1517 | 32, /* rightshift */ | |
1518 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1519 | 16, /* bitsize */ | |
1520 | FALSE, /* pc_relative */ | |
1521 | 0, /* bitpos */ | |
1522 | complain_overflow_dont, /* complain_on_overflow */ | |
1523 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1524 | "R_PPC64_TPREL16_HIGHERA", /* name */ | |
1525 | FALSE, /* partial_inplace */ | |
1526 | 0, /* src_mask */ | |
1527 | 0xffff, /* dst_mask */ | |
1528 | FALSE), /* pcrel_offset */ | |
1529 | ||
1530 | /* Like TPREL16_HIGHER, but next higher group of 16 bits. */ | |
1531 | HOWTO (R_PPC64_TPREL16_HIGHEST, | |
1532 | 48, /* rightshift */ | |
1533 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1534 | 16, /* bitsize */ | |
1535 | FALSE, /* pc_relative */ | |
1536 | 0, /* bitpos */ | |
1537 | complain_overflow_dont, /* complain_on_overflow */ | |
1538 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1539 | "R_PPC64_TPREL16_HIGHEST", /* name */ | |
1540 | FALSE, /* partial_inplace */ | |
1541 | 0, /* src_mask */ | |
1542 | 0xffff, /* dst_mask */ | |
1543 | FALSE), /* pcrel_offset */ | |
1544 | ||
1545 | /* Like TPREL16_HIGHEST, but adjust for low 16 bits. */ | |
1546 | HOWTO (R_PPC64_TPREL16_HIGHESTA, | |
1547 | 48, /* rightshift */ | |
1548 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1549 | 16, /* bitsize */ | |
1550 | FALSE, /* pc_relative */ | |
1551 | 0, /* bitpos */ | |
1552 | complain_overflow_dont, /* complain_on_overflow */ | |
1553 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1554 | "R_PPC64_TPREL16_HIGHESTA", /* name */ | |
1555 | FALSE, /* partial_inplace */ | |
1556 | 0, /* src_mask */ | |
1557 | 0xffff, /* dst_mask */ | |
1558 | FALSE), /* pcrel_offset */ | |
1559 | ||
1560 | /* Like TPREL16, but for insns with a DS field. */ | |
1561 | HOWTO (R_PPC64_TPREL16_DS, | |
1562 | 0, /* rightshift */ | |
1563 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1564 | 16, /* bitsize */ | |
1565 | FALSE, /* pc_relative */ | |
1566 | 0, /* bitpos */ | |
1567 | complain_overflow_signed, /* complain_on_overflow */ | |
1568 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1569 | "R_PPC64_TPREL16_DS", /* name */ | |
1570 | FALSE, /* partial_inplace */ | |
1571 | 0, /* src_mask */ | |
1572 | 0xfffc, /* dst_mask */ | |
1573 | FALSE), /* pcrel_offset */ | |
1574 | ||
1575 | /* Like TPREL16_DS, but no overflow. */ | |
1576 | HOWTO (R_PPC64_TPREL16_LO_DS, | |
1577 | 0, /* rightshift */ | |
1578 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1579 | 16, /* bitsize */ | |
1580 | FALSE, /* pc_relative */ | |
1581 | 0, /* bitpos */ | |
1582 | complain_overflow_dont, /* complain_on_overflow */ | |
1583 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1584 | "R_PPC64_TPREL16_LO_DS", /* name */ | |
1585 | FALSE, /* partial_inplace */ | |
1586 | 0, /* src_mask */ | |
1587 | 0xfffc, /* dst_mask */ | |
1588 | FALSE), /* pcrel_offset */ | |
1589 | ||
1590 | /* Allocates two contiguous entries in the GOT to hold a tls_index structure, | |
1591 | with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset | |
1592 | to the first entry relative to the TOC base (r2). */ | |
1593 | HOWTO (R_PPC64_GOT_TLSGD16, | |
1594 | 0, /* rightshift */ | |
1595 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1596 | 16, /* bitsize */ | |
1597 | FALSE, /* pc_relative */ | |
1598 | 0, /* bitpos */ | |
1599 | complain_overflow_signed, /* complain_on_overflow */ | |
1600 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1601 | "R_PPC64_GOT_TLSGD16", /* name */ | |
b34976b6 | 1602 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1603 | 0, /* src_mask */ |
1604 | 0xffff, /* dst_mask */ | |
b34976b6 | 1605 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1606 | |
411e1bfb AM |
1607 | /* Like GOT_TLSGD16, but no overflow. */ |
1608 | HOWTO (R_PPC64_GOT_TLSGD16_LO, | |
5bd4f169 AM |
1609 | 0, /* rightshift */ |
1610 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1611 | 16, /* bitsize */ | |
b34976b6 | 1612 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1613 | 0, /* bitpos */ |
1614 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 1615 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1616 | "R_PPC64_GOT_TLSGD16_LO", /* name */ |
b34976b6 | 1617 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1618 | 0, /* src_mask */ |
1619 | 0xffff, /* dst_mask */ | |
b34976b6 | 1620 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1621 | |
411e1bfb AM |
1622 | /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */ |
1623 | HOWTO (R_PPC64_GOT_TLSGD16_HI, | |
5bd4f169 AM |
1624 | 16, /* rightshift */ |
1625 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1626 | 16, /* bitsize */ | |
b34976b6 | 1627 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1628 | 0, /* bitpos */ |
1629 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 1630 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1631 | "R_PPC64_GOT_TLSGD16_HI", /* name */ |
b34976b6 | 1632 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1633 | 0, /* src_mask */ |
1634 | 0xffff, /* dst_mask */ | |
b34976b6 | 1635 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1636 | |
411e1bfb AM |
1637 | /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */ |
1638 | HOWTO (R_PPC64_GOT_TLSGD16_HA, | |
5bd4f169 AM |
1639 | 16, /* rightshift */ |
1640 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1641 | 16, /* bitsize */ | |
b34976b6 | 1642 | FALSE, /* pc_relative */ |
5bd4f169 | 1643 | 0, /* bitpos */ |
411e1bfb | 1644 | complain_overflow_dont, /* complain_on_overflow */ |
805fc799 | 1645 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1646 | "R_PPC64_GOT_TLSGD16_HA", /* name */ |
b34976b6 | 1647 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1648 | 0, /* src_mask */ |
1649 | 0xffff, /* dst_mask */ | |
b34976b6 | 1650 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1651 | |
411e1bfb AM |
1652 | /* Allocates two contiguous entries in the GOT to hold a tls_index structure, |
1653 | with values (sym+add)@dtpmod and zero, and computes the offset to the | |
1654 | first entry relative to the TOC base (r2). */ | |
1655 | HOWTO (R_PPC64_GOT_TLSLD16, | |
5bd4f169 AM |
1656 | 0, /* rightshift */ |
1657 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1658 | 16, /* bitsize */ | |
b34976b6 | 1659 | FALSE, /* pc_relative */ |
5bd4f169 | 1660 | 0, /* bitpos */ |
411e1bfb AM |
1661 | complain_overflow_signed, /* complain_on_overflow */ |
1662 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1663 | "R_PPC64_GOT_TLSLD16", /* name */ | |
b34976b6 | 1664 | FALSE, /* partial_inplace */ |
d006db6c | 1665 | 0, /* src_mask */ |
411e1bfb | 1666 | 0xffff, /* dst_mask */ |
b34976b6 | 1667 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1668 | |
411e1bfb AM |
1669 | /* Like GOT_TLSLD16, but no overflow. */ |
1670 | HOWTO (R_PPC64_GOT_TLSLD16_LO, | |
5bd4f169 AM |
1671 | 0, /* rightshift */ |
1672 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1673 | 16, /* bitsize */ | |
b34976b6 | 1674 | FALSE, /* pc_relative */ |
5bd4f169 | 1675 | 0, /* bitpos */ |
411e1bfb AM |
1676 | complain_overflow_dont, /* complain_on_overflow */ |
1677 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1678 | "R_PPC64_GOT_TLSLD16_LO", /* name */ | |
b34976b6 | 1679 | FALSE, /* partial_inplace */ |
d006db6c | 1680 | 0, /* src_mask */ |
411e1bfb | 1681 | 0xffff, /* dst_mask */ |
b34976b6 | 1682 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1683 | |
411e1bfb AM |
1684 | /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */ |
1685 | HOWTO (R_PPC64_GOT_TLSLD16_HI, | |
1686 | 16, /* rightshift */ | |
5bd4f169 AM |
1687 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1688 | 16, /* bitsize */ | |
b34976b6 | 1689 | FALSE, /* pc_relative */ |
5bd4f169 | 1690 | 0, /* bitpos */ |
411e1bfb | 1691 | complain_overflow_dont, /* complain_on_overflow */ |
805fc799 | 1692 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1693 | "R_PPC64_GOT_TLSLD16_HI", /* name */ |
b34976b6 | 1694 | FALSE, /* partial_inplace */ |
d006db6c | 1695 | 0, /* src_mask */ |
411e1bfb | 1696 | 0xffff, /* dst_mask */ |
b34976b6 | 1697 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1698 | |
411e1bfb AM |
1699 | /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */ |
1700 | HOWTO (R_PPC64_GOT_TLSLD16_HA, | |
1701 | 16, /* rightshift */ | |
5bd4f169 AM |
1702 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1703 | 16, /* bitsize */ | |
b34976b6 | 1704 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1705 | 0, /* bitpos */ |
1706 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 1707 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1708 | "R_PPC64_GOT_TLSLD16_HA", /* name */ |
b34976b6 | 1709 | FALSE, /* partial_inplace */ |
d006db6c | 1710 | 0, /* src_mask */ |
411e1bfb | 1711 | 0xffff, /* dst_mask */ |
b34976b6 | 1712 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1713 | |
411e1bfb AM |
1714 | /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes |
1715 | the offset to the entry relative to the TOC base (r2). */ | |
1716 | HOWTO (R_PPC64_GOT_DTPREL16_DS, | |
5bd4f169 AM |
1717 | 0, /* rightshift */ |
1718 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1719 | 16, /* bitsize */ | |
b34976b6 | 1720 | FALSE, /* pc_relative */ |
5bd4f169 | 1721 | 0, /* bitpos */ |
411e1bfb | 1722 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 1723 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1724 | "R_PPC64_GOT_DTPREL16_DS", /* name */ |
b34976b6 | 1725 | FALSE, /* partial_inplace */ |
d006db6c | 1726 | 0, /* src_mask */ |
5bd4f169 | 1727 | 0xfffc, /* dst_mask */ |
b34976b6 | 1728 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1729 | |
411e1bfb AM |
1730 | /* Like GOT_DTPREL16_DS, but no overflow. */ |
1731 | HOWTO (R_PPC64_GOT_DTPREL16_LO_DS, | |
5bd4f169 | 1732 | 0, /* rightshift */ |
c061c2d8 AM |
1733 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1734 | 16, /* bitsize */ | |
b34976b6 | 1735 | FALSE, /* pc_relative */ |
5bd4f169 | 1736 | 0, /* bitpos */ |
411e1bfb AM |
1737 | complain_overflow_dont, /* complain_on_overflow */ |
1738 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1739 | "R_PPC64_GOT_DTPREL16_LO_DS", /* name */ | |
b34976b6 | 1740 | FALSE, /* partial_inplace */ |
d006db6c | 1741 | 0, /* src_mask */ |
c061c2d8 | 1742 | 0xfffc, /* dst_mask */ |
b34976b6 | 1743 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1744 | |
411e1bfb AM |
1745 | /* Like GOT_DTPREL16_LO_DS, but next higher group of 16 bits. */ |
1746 | HOWTO (R_PPC64_GOT_DTPREL16_HI, | |
1747 | 16, /* rightshift */ | |
5bd4f169 AM |
1748 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1749 | 16, /* bitsize */ | |
b34976b6 | 1750 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1751 | 0, /* bitpos */ |
1752 | complain_overflow_dont, /* complain_on_overflow */ | |
411e1bfb AM |
1753 | ppc64_elf_unhandled_reloc, /* special_function */ |
1754 | "R_PPC64_GOT_DTPREL16_HI", /* name */ | |
b34976b6 | 1755 | FALSE, /* partial_inplace */ |
d006db6c | 1756 | 0, /* src_mask */ |
411e1bfb | 1757 | 0xffff, /* dst_mask */ |
b34976b6 | 1758 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1759 | |
411e1bfb AM |
1760 | /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */ |
1761 | HOWTO (R_PPC64_GOT_DTPREL16_HA, | |
1762 | 16, /* rightshift */ | |
1763 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1764 | 16, /* bitsize */ | |
1765 | FALSE, /* pc_relative */ | |
1766 | 0, /* bitpos */ | |
1767 | complain_overflow_dont, /* complain_on_overflow */ | |
1768 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1769 | "R_PPC64_GOT_DTPREL16_HA", /* name */ | |
1770 | FALSE, /* partial_inplace */ | |
1771 | 0, /* src_mask */ | |
1772 | 0xffff, /* dst_mask */ | |
1773 | FALSE), /* pcrel_offset */ | |
1774 | ||
1775 | /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the | |
1776 | offset to the entry relative to the TOC base (r2). */ | |
1777 | HOWTO (R_PPC64_GOT_TPREL16_DS, | |
5bd4f169 AM |
1778 | 0, /* rightshift */ |
1779 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1780 | 16, /* bitsize */ | |
b34976b6 | 1781 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1782 | 0, /* bitpos */ |
1783 | complain_overflow_signed, /* complain_on_overflow */ | |
411e1bfb AM |
1784 | ppc64_elf_unhandled_reloc, /* special_function */ |
1785 | "R_PPC64_GOT_TPREL16_DS", /* name */ | |
b34976b6 | 1786 | FALSE, /* partial_inplace */ |
d006db6c | 1787 | 0, /* src_mask */ |
ad8e1ba5 | 1788 | 0xfffc, /* dst_mask */ |
b34976b6 | 1789 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1790 | |
411e1bfb AM |
1791 | /* Like GOT_TPREL16_DS, but no overflow. */ |
1792 | HOWTO (R_PPC64_GOT_TPREL16_LO_DS, | |
5bd4f169 AM |
1793 | 0, /* rightshift */ |
1794 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1795 | 16, /* bitsize */ | |
b34976b6 | 1796 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1797 | 0, /* bitpos */ |
1798 | complain_overflow_dont, /* complain_on_overflow */ | |
411e1bfb AM |
1799 | ppc64_elf_unhandled_reloc, /* special_function */ |
1800 | "R_PPC64_GOT_TPREL16_LO_DS", /* name */ | |
b34976b6 | 1801 | FALSE, /* partial_inplace */ |
d006db6c | 1802 | 0, /* src_mask */ |
ad8e1ba5 | 1803 | 0xfffc, /* dst_mask */ |
b34976b6 | 1804 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1805 | |
411e1bfb AM |
1806 | /* Like GOT_TPREL16_LO_DS, but next higher group of 16 bits. */ |
1807 | HOWTO (R_PPC64_GOT_TPREL16_HI, | |
1808 | 16, /* rightshift */ | |
5bd4f169 AM |
1809 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1810 | 16, /* bitsize */ | |
b34976b6 | 1811 | FALSE, /* pc_relative */ |
5bd4f169 | 1812 | 0, /* bitpos */ |
411e1bfb | 1813 | complain_overflow_dont, /* complain_on_overflow */ |
805fc799 | 1814 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1815 | "R_PPC64_GOT_TPREL16_HI", /* name */ |
b34976b6 | 1816 | FALSE, /* partial_inplace */ |
d006db6c | 1817 | 0, /* src_mask */ |
411e1bfb | 1818 | 0xffff, /* dst_mask */ |
b34976b6 | 1819 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1820 | |
411e1bfb AM |
1821 | /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */ |
1822 | HOWTO (R_PPC64_GOT_TPREL16_HA, | |
1823 | 16, /* rightshift */ | |
5bd4f169 AM |
1824 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1825 | 16, /* bitsize */ | |
b34976b6 | 1826 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1827 | 0, /* bitpos */ |
1828 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 1829 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1830 | "R_PPC64_GOT_TPREL16_HA", /* name */ |
b34976b6 | 1831 | FALSE, /* partial_inplace */ |
d006db6c | 1832 | 0, /* src_mask */ |
411e1bfb | 1833 | 0xffff, /* dst_mask */ |
b34976b6 | 1834 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
1835 | |
1836 | /* GNU extension to record C++ vtable hierarchy. */ | |
1837 | HOWTO (R_PPC64_GNU_VTINHERIT, /* type */ | |
1838 | 0, /* rightshift */ | |
1839 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
1840 | 0, /* bitsize */ | |
b34976b6 | 1841 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1842 | 0, /* bitpos */ |
1843 | complain_overflow_dont, /* complain_on_overflow */ | |
1844 | NULL, /* special_function */ | |
1845 | "R_PPC64_GNU_VTINHERIT", /* name */ | |
b34976b6 | 1846 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1847 | 0, /* src_mask */ |
1848 | 0, /* dst_mask */ | |
b34976b6 | 1849 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
1850 | |
1851 | /* GNU extension to record C++ vtable member usage. */ | |
1852 | HOWTO (R_PPC64_GNU_VTENTRY, /* type */ | |
1853 | 0, /* rightshift */ | |
1854 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
1855 | 0, /* bitsize */ | |
b34976b6 | 1856 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1857 | 0, /* bitpos */ |
1858 | complain_overflow_dont, /* complain_on_overflow */ | |
1859 | NULL, /* special_function */ | |
1860 | "R_PPC64_GNU_VTENTRY", /* name */ | |
b34976b6 | 1861 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1862 | 0, /* src_mask */ |
1863 | 0, /* dst_mask */ | |
b34976b6 | 1864 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
1865 | }; |
1866 | ||
1867 | \f | |
1868 | /* Initialize the ppc64_elf_howto_table, so that linear accesses can | |
1869 | be done. */ | |
1870 | ||
1871 | static void | |
4ce794b7 | 1872 | ppc_howto_init (void) |
5bd4f169 AM |
1873 | { |
1874 | unsigned int i, type; | |
1875 | ||
1876 | for (i = 0; | |
1877 | i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]); | |
1878 | i++) | |
1879 | { | |
1880 | type = ppc64_elf_howto_raw[i].type; | |
1881 | BFD_ASSERT (type < (sizeof (ppc64_elf_howto_table) | |
1882 | / sizeof (ppc64_elf_howto_table[0]))); | |
1883 | ppc64_elf_howto_table[type] = &ppc64_elf_howto_raw[i]; | |
1884 | } | |
1885 | } | |
1886 | ||
1887 | static reloc_howto_type * | |
4ce794b7 AM |
1888 | ppc64_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, |
1889 | bfd_reloc_code_real_type code) | |
5bd4f169 | 1890 | { |
411e1bfb | 1891 | enum elf_ppc64_reloc_type r = R_PPC64_NONE; |
5bd4f169 AM |
1892 | |
1893 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) | |
1894 | /* Initialize howto table if needed. */ | |
1895 | ppc_howto_init (); | |
1896 | ||
4ce794b7 | 1897 | switch (code) |
5bd4f169 AM |
1898 | { |
1899 | default: | |
4ce794b7 | 1900 | return NULL; |
5bd4f169 | 1901 | |
411e1bfb AM |
1902 | case BFD_RELOC_NONE: r = R_PPC64_NONE; |
1903 | break; | |
1904 | case BFD_RELOC_32: r = R_PPC64_ADDR32; | |
1905 | break; | |
1906 | case BFD_RELOC_PPC_BA26: r = R_PPC64_ADDR24; | |
1907 | break; | |
1908 | case BFD_RELOC_16: r = R_PPC64_ADDR16; | |
1909 | break; | |
1910 | case BFD_RELOC_LO16: r = R_PPC64_ADDR16_LO; | |
1911 | break; | |
1912 | case BFD_RELOC_HI16: r = R_PPC64_ADDR16_HI; | |
1913 | break; | |
1914 | case BFD_RELOC_HI16_S: r = R_PPC64_ADDR16_HA; | |
5bd4f169 | 1915 | break; |
411e1bfb | 1916 | case BFD_RELOC_PPC_BA16: r = R_PPC64_ADDR14; |
5bd4f169 | 1917 | break; |
411e1bfb | 1918 | case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC64_ADDR14_BRTAKEN; |
5bd4f169 | 1919 | break; |
411e1bfb | 1920 | case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC64_ADDR14_BRNTAKEN; |
5bd4f169 | 1921 | break; |
411e1bfb | 1922 | case BFD_RELOC_PPC_B26: r = R_PPC64_REL24; |
5bd4f169 | 1923 | break; |
411e1bfb | 1924 | case BFD_RELOC_PPC_B16: r = R_PPC64_REL14; |
5bd4f169 | 1925 | break; |
411e1bfb | 1926 | case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC64_REL14_BRTAKEN; |
5bd4f169 | 1927 | break; |
411e1bfb | 1928 | case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC64_REL14_BRNTAKEN; |
5bd4f169 | 1929 | break; |
411e1bfb | 1930 | case BFD_RELOC_16_GOTOFF: r = R_PPC64_GOT16; |
5bd4f169 | 1931 | break; |
411e1bfb | 1932 | case BFD_RELOC_LO16_GOTOFF: r = R_PPC64_GOT16_LO; |
5bd4f169 | 1933 | break; |
411e1bfb | 1934 | case BFD_RELOC_HI16_GOTOFF: r = R_PPC64_GOT16_HI; |
5bd4f169 | 1935 | break; |
411e1bfb | 1936 | case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC64_GOT16_HA; |
5bd4f169 | 1937 | break; |
411e1bfb | 1938 | case BFD_RELOC_PPC_COPY: r = R_PPC64_COPY; |
5bd4f169 | 1939 | break; |
411e1bfb | 1940 | case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC64_GLOB_DAT; |
5bd4f169 | 1941 | break; |
411e1bfb | 1942 | case BFD_RELOC_32_PCREL: r = R_PPC64_REL32; |
5bd4f169 | 1943 | break; |
411e1bfb | 1944 | case BFD_RELOC_32_PLTOFF: r = R_PPC64_PLT32; |
5bd4f169 | 1945 | break; |
411e1bfb | 1946 | case BFD_RELOC_32_PLT_PCREL: r = R_PPC64_PLTREL32; |
5bd4f169 | 1947 | break; |
411e1bfb | 1948 | case BFD_RELOC_LO16_PLTOFF: r = R_PPC64_PLT16_LO; |
5bd4f169 | 1949 | break; |
411e1bfb | 1950 | case BFD_RELOC_HI16_PLTOFF: r = R_PPC64_PLT16_HI; |
5bd4f169 | 1951 | break; |
411e1bfb | 1952 | case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC64_PLT16_HA; |
5bd4f169 | 1953 | break; |
411e1bfb | 1954 | case BFD_RELOC_16_BASEREL: r = R_PPC64_SECTOFF; |
5bd4f169 | 1955 | break; |
411e1bfb | 1956 | case BFD_RELOC_LO16_BASEREL: r = R_PPC64_SECTOFF_LO; |
5bd4f169 | 1957 | break; |
411e1bfb | 1958 | case BFD_RELOC_HI16_BASEREL: r = R_PPC64_SECTOFF_HI; |
5bd4f169 | 1959 | break; |
411e1bfb | 1960 | case BFD_RELOC_HI16_S_BASEREL: r = R_PPC64_SECTOFF_HA; |
5bd4f169 | 1961 | break; |
411e1bfb | 1962 | case BFD_RELOC_CTOR: r = R_PPC64_ADDR64; |
5bd4f169 | 1963 | break; |
411e1bfb | 1964 | case BFD_RELOC_64: r = R_PPC64_ADDR64; |
5bd4f169 | 1965 | break; |
411e1bfb | 1966 | case BFD_RELOC_PPC64_HIGHER: r = R_PPC64_ADDR16_HIGHER; |
5bd4f169 | 1967 | break; |
411e1bfb | 1968 | case BFD_RELOC_PPC64_HIGHER_S: r = R_PPC64_ADDR16_HIGHERA; |
5bd4f169 | 1969 | break; |
411e1bfb | 1970 | case BFD_RELOC_PPC64_HIGHEST: r = R_PPC64_ADDR16_HIGHEST; |
5bd4f169 | 1971 | break; |
411e1bfb | 1972 | case BFD_RELOC_PPC64_HIGHEST_S: r = R_PPC64_ADDR16_HIGHESTA; |
5bd4f169 | 1973 | break; |
411e1bfb | 1974 | case BFD_RELOC_64_PCREL: r = R_PPC64_REL64; |
5bd4f169 | 1975 | break; |
411e1bfb | 1976 | case BFD_RELOC_64_PLTOFF: r = R_PPC64_PLT64; |
5bd4f169 | 1977 | break; |
411e1bfb | 1978 | case BFD_RELOC_64_PLT_PCREL: r = R_PPC64_PLTREL64; |
5bd4f169 | 1979 | break; |
411e1bfb | 1980 | case BFD_RELOC_PPC_TOC16: r = R_PPC64_TOC16; |
5bd4f169 | 1981 | break; |
411e1bfb | 1982 | case BFD_RELOC_PPC64_TOC16_LO: r = R_PPC64_TOC16_LO; |
5bd4f169 | 1983 | break; |
411e1bfb | 1984 | case BFD_RELOC_PPC64_TOC16_HI: r = R_PPC64_TOC16_HI; |
5bd4f169 | 1985 | break; |
411e1bfb | 1986 | case BFD_RELOC_PPC64_TOC16_HA: r = R_PPC64_TOC16_HA; |
5bd4f169 | 1987 | break; |
411e1bfb | 1988 | case BFD_RELOC_PPC64_TOC: r = R_PPC64_TOC; |
5bd4f169 | 1989 | break; |
411e1bfb | 1990 | case BFD_RELOC_PPC64_PLTGOT16: r = R_PPC64_PLTGOT16; |
5bd4f169 | 1991 | break; |
411e1bfb | 1992 | case BFD_RELOC_PPC64_PLTGOT16_LO: r = R_PPC64_PLTGOT16_LO; |
5bd4f169 | 1993 | break; |
411e1bfb | 1994 | case BFD_RELOC_PPC64_PLTGOT16_HI: r = R_PPC64_PLTGOT16_HI; |
5bd4f169 | 1995 | break; |
411e1bfb | 1996 | case BFD_RELOC_PPC64_PLTGOT16_HA: r = R_PPC64_PLTGOT16_HA; |
5bd4f169 | 1997 | break; |
411e1bfb | 1998 | case BFD_RELOC_PPC64_ADDR16_DS: r = R_PPC64_ADDR16_DS; |
5bd4f169 | 1999 | break; |
411e1bfb | 2000 | case BFD_RELOC_PPC64_ADDR16_LO_DS: r = R_PPC64_ADDR16_LO_DS; |
5bd4f169 | 2001 | break; |
411e1bfb | 2002 | case BFD_RELOC_PPC64_GOT16_DS: r = R_PPC64_GOT16_DS; |
5bd4f169 | 2003 | break; |
411e1bfb | 2004 | case BFD_RELOC_PPC64_GOT16_LO_DS: r = R_PPC64_GOT16_LO_DS; |
5bd4f169 | 2005 | break; |
411e1bfb | 2006 | case BFD_RELOC_PPC64_PLT16_LO_DS: r = R_PPC64_PLT16_LO_DS; |
5bd4f169 | 2007 | break; |
411e1bfb | 2008 | case BFD_RELOC_PPC64_SECTOFF_DS: r = R_PPC64_SECTOFF_DS; |
5bd4f169 | 2009 | break; |
411e1bfb | 2010 | case BFD_RELOC_PPC64_SECTOFF_LO_DS: r = R_PPC64_SECTOFF_LO_DS; |
5bd4f169 | 2011 | break; |
411e1bfb | 2012 | case BFD_RELOC_PPC64_TOC16_DS: r = R_PPC64_TOC16_DS; |
5bd4f169 | 2013 | break; |
411e1bfb | 2014 | case BFD_RELOC_PPC64_TOC16_LO_DS: r = R_PPC64_TOC16_LO_DS; |
5bd4f169 | 2015 | break; |
411e1bfb | 2016 | case BFD_RELOC_PPC64_PLTGOT16_DS: r = R_PPC64_PLTGOT16_DS; |
5bd4f169 | 2017 | break; |
411e1bfb | 2018 | case BFD_RELOC_PPC64_PLTGOT16_LO_DS: r = R_PPC64_PLTGOT16_LO_DS; |
5bd4f169 | 2019 | break; |
411e1bfb | 2020 | case BFD_RELOC_PPC_TLS: r = R_PPC64_TLS; |
5bd4f169 | 2021 | break; |
411e1bfb | 2022 | case BFD_RELOC_PPC_DTPMOD: r = R_PPC64_DTPMOD64; |
5bd4f169 | 2023 | break; |
411e1bfb | 2024 | case BFD_RELOC_PPC_TPREL16: r = R_PPC64_TPREL16; |
5bd4f169 | 2025 | break; |
411e1bfb | 2026 | case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC64_TPREL16_LO; |
5bd4f169 | 2027 | break; |
411e1bfb | 2028 | case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC64_TPREL16_HI; |
5bd4f169 | 2029 | break; |
411e1bfb | 2030 | case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC64_TPREL16_HA; |
5bd4f169 | 2031 | break; |
411e1bfb | 2032 | case BFD_RELOC_PPC_TPREL: r = R_PPC64_TPREL64; |
5bd4f169 | 2033 | break; |
411e1bfb AM |
2034 | case BFD_RELOC_PPC_DTPREL16: r = R_PPC64_DTPREL16; |
2035 | break; | |
2036 | case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC64_DTPREL16_LO; | |
2037 | break; | |
2038 | case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC64_DTPREL16_HI; | |
2039 | break; | |
2040 | case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC64_DTPREL16_HA; | |
2041 | break; | |
2042 | case BFD_RELOC_PPC_DTPREL: r = R_PPC64_DTPREL64; | |
2043 | break; | |
2044 | case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC64_GOT_TLSGD16; | |
2045 | break; | |
2046 | case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC64_GOT_TLSGD16_LO; | |
2047 | break; | |
2048 | case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC64_GOT_TLSGD16_HI; | |
2049 | break; | |
2050 | case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC64_GOT_TLSGD16_HA; | |
2051 | break; | |
2052 | case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC64_GOT_TLSLD16; | |
2053 | break; | |
2054 | case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC64_GOT_TLSLD16_LO; | |
2055 | break; | |
2056 | case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC64_GOT_TLSLD16_HI; | |
2057 | break; | |
2058 | case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC64_GOT_TLSLD16_HA; | |
2059 | break; | |
2060 | case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC64_GOT_TPREL16_DS; | |
2061 | break; | |
2062 | case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC64_GOT_TPREL16_LO_DS; | |
2063 | break; | |
2064 | case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC64_GOT_TPREL16_HI; | |
2065 | break; | |
2066 | case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC64_GOT_TPREL16_HA; | |
2067 | break; | |
2068 | case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC64_GOT_DTPREL16_DS; | |
2069 | break; | |
2070 | case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC64_GOT_DTPREL16_LO_DS; | |
2071 | break; | |
2072 | case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC64_GOT_DTPREL16_HI; | |
2073 | break; | |
2074 | case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC64_GOT_DTPREL16_HA; | |
2075 | break; | |
2076 | case BFD_RELOC_PPC64_TPREL16_DS: r = R_PPC64_TPREL16_DS; | |
2077 | break; | |
2078 | case BFD_RELOC_PPC64_TPREL16_LO_DS: r = R_PPC64_TPREL16_LO_DS; | |
2079 | break; | |
2080 | case BFD_RELOC_PPC64_TPREL16_HIGHER: r = R_PPC64_TPREL16_HIGHER; | |
2081 | break; | |
2082 | case BFD_RELOC_PPC64_TPREL16_HIGHERA: r = R_PPC64_TPREL16_HIGHERA; | |
2083 | break; | |
2084 | case BFD_RELOC_PPC64_TPREL16_HIGHEST: r = R_PPC64_TPREL16_HIGHEST; | |
2085 | break; | |
2086 | case BFD_RELOC_PPC64_TPREL16_HIGHESTA: r = R_PPC64_TPREL16_HIGHESTA; | |
2087 | break; | |
2088 | case BFD_RELOC_PPC64_DTPREL16_DS: r = R_PPC64_DTPREL16_DS; | |
2089 | break; | |
2090 | case BFD_RELOC_PPC64_DTPREL16_LO_DS: r = R_PPC64_DTPREL16_LO_DS; | |
2091 | break; | |
2092 | case BFD_RELOC_PPC64_DTPREL16_HIGHER: r = R_PPC64_DTPREL16_HIGHER; | |
2093 | break; | |
2094 | case BFD_RELOC_PPC64_DTPREL16_HIGHERA: r = R_PPC64_DTPREL16_HIGHERA; | |
2095 | break; | |
2096 | case BFD_RELOC_PPC64_DTPREL16_HIGHEST: r = R_PPC64_DTPREL16_HIGHEST; | |
2097 | break; | |
2098 | case BFD_RELOC_PPC64_DTPREL16_HIGHESTA: r = R_PPC64_DTPREL16_HIGHESTA; | |
2099 | break; | |
2100 | case BFD_RELOC_VTABLE_INHERIT: r = R_PPC64_GNU_VTINHERIT; | |
2101 | break; | |
2102 | case BFD_RELOC_VTABLE_ENTRY: r = R_PPC64_GNU_VTENTRY; | |
5bd4f169 AM |
2103 | break; |
2104 | } | |
2105 | ||
4ce794b7 | 2106 | return ppc64_elf_howto_table[r]; |
5bd4f169 AM |
2107 | }; |
2108 | ||
2109 | /* Set the howto pointer for a PowerPC ELF reloc. */ | |
2110 | ||
2111 | static void | |
4ce794b7 AM |
2112 | ppc64_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr, |
2113 | Elf_Internal_Rela *dst) | |
5bd4f169 | 2114 | { |
65f38f15 AM |
2115 | unsigned int type; |
2116 | ||
ef60b7ff | 2117 | /* Initialize howto table if needed. */ |
5bd4f169 | 2118 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) |
5bd4f169 AM |
2119 | ppc_howto_init (); |
2120 | ||
65f38f15 | 2121 | type = ELF64_R_TYPE (dst->r_info); |
d0fb9a8d JJ |
2122 | if (type >= (sizeof (ppc64_elf_howto_table) |
2123 | / sizeof (ppc64_elf_howto_table[0]))) | |
2124 | { | |
2125 | (*_bfd_error_handler) (_("%B: invalid relocation type %d"), | |
3ec2b351 NC |
2126 | abfd, (int) type); |
2127 | type = R_PPC64_NONE; | |
d0fb9a8d | 2128 | } |
65f38f15 | 2129 | cache_ptr->howto = ppc64_elf_howto_table[type]; |
5bd4f169 AM |
2130 | } |
2131 | ||
04c9666a | 2132 | /* Handle the R_PPC64_ADDR16_HA and similar relocs. */ |
5bd4f169 AM |
2133 | |
2134 | static bfd_reloc_status_type | |
4ce794b7 AM |
2135 | ppc64_elf_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2136 | void *data, asection *input_section, | |
2137 | bfd *output_bfd, char **error_message) | |
5bd4f169 | 2138 | { |
805fc799 AM |
2139 | /* If this is a relocatable link (output_bfd test tells us), just |
2140 | call the generic function. Any adjustment will be done at final | |
2141 | link time. */ | |
2142 | if (output_bfd != NULL) | |
cedb70c5 | 2143 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2144 | input_section, output_bfd, error_message); |
2145 | ||
2146 | /* Adjust the addend for sign extension of the low 16 bits. | |
2147 | We won't actually be using the low 16 bits, so trashing them | |
2148 | doesn't matter. */ | |
2149 | reloc_entry->addend += 0x8000; | |
2150 | return bfd_reloc_continue; | |
2151 | } | |
5bd4f169 | 2152 | |
2441e016 AM |
2153 | static bfd_reloc_status_type |
2154 | ppc64_elf_branch_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, | |
2155 | void *data, asection *input_section, | |
2156 | bfd *output_bfd, char **error_message) | |
2157 | { | |
2158 | if (output_bfd != NULL) | |
2159 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, | |
2160 | input_section, output_bfd, error_message); | |
2161 | ||
699733f6 AM |
2162 | if (strcmp (symbol->section->name, ".opd") == 0 |
2163 | && (symbol->section->owner->flags & DYNAMIC) == 0) | |
2441e016 AM |
2164 | { |
2165 | bfd_vma dest = opd_entry_value (symbol->section, | |
2166 | symbol->value + reloc_entry->addend, | |
2167 | NULL, NULL); | |
2168 | if (dest != (bfd_vma) -1) | |
2169 | reloc_entry->addend = dest - (symbol->value | |
2170 | + symbol->section->output_section->vma | |
2171 | + symbol->section->output_offset); | |
2172 | } | |
2173 | return bfd_reloc_continue; | |
2174 | } | |
2175 | ||
805fc799 | 2176 | static bfd_reloc_status_type |
4ce794b7 AM |
2177 | ppc64_elf_brtaken_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2178 | void *data, asection *input_section, | |
2179 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2180 | { |
2181 | long insn; | |
04c9666a | 2182 | enum elf_ppc64_reloc_type r_type; |
805fc799 AM |
2183 | bfd_size_type octets; |
2184 | /* Disabled until we sort out how ld should choose 'y' vs 'at'. */ | |
b34976b6 | 2185 | bfd_boolean is_power4 = FALSE; |
805fc799 AM |
2186 | |
2187 | /* If this is a relocatable link (output_bfd test tells us), just | |
2188 | call the generic function. Any adjustment will be done at final | |
2189 | link time. */ | |
5bd4f169 | 2190 | if (output_bfd != NULL) |
cedb70c5 | 2191 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2192 | input_section, output_bfd, error_message); |
2193 | ||
2194 | octets = reloc_entry->address * bfd_octets_per_byte (abfd); | |
2195 | insn = bfd_get_32 (abfd, (bfd_byte *) data + octets); | |
2196 | insn &= ~(0x01 << 21); | |
4ce794b7 | 2197 | r_type = reloc_entry->howto->type; |
805fc799 AM |
2198 | if (r_type == R_PPC64_ADDR14_BRTAKEN |
2199 | || r_type == R_PPC64_REL14_BRTAKEN) | |
cedb70c5 | 2200 | insn |= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */ |
805fc799 AM |
2201 | |
2202 | if (is_power4) | |
5bd4f169 | 2203 | { |
805fc799 AM |
2204 | /* Set 'a' bit. This is 0b00010 in BO field for branch |
2205 | on CR(BI) insns (BO == 001at or 011at), and 0b01000 | |
2206 | for branch on CTR insns (BO == 1a00t or 1a01t). */ | |
2207 | if ((insn & (0x14 << 21)) == (0x04 << 21)) | |
2208 | insn |= 0x02 << 21; | |
2209 | else if ((insn & (0x14 << 21)) == (0x10 << 21)) | |
2210 | insn |= 0x08 << 21; | |
2211 | else | |
2441e016 | 2212 | goto out; |
5bd4f169 | 2213 | } |
805fc799 AM |
2214 | else |
2215 | { | |
2216 | bfd_vma target = 0; | |
2217 | bfd_vma from; | |
5bd4f169 | 2218 | |
805fc799 AM |
2219 | if (!bfd_is_com_section (symbol->section)) |
2220 | target = symbol->value; | |
2221 | target += symbol->section->output_section->vma; | |
2222 | target += symbol->section->output_offset; | |
2223 | target += reloc_entry->addend; | |
5bd4f169 | 2224 | |
805fc799 AM |
2225 | from = (reloc_entry->address |
2226 | + input_section->output_offset | |
2227 | + input_section->output_section->vma); | |
5bd4f169 | 2228 | |
805fc799 AM |
2229 | /* Invert 'y' bit if not the default. */ |
2230 | if ((bfd_signed_vma) (target - from) < 0) | |
2231 | insn ^= 0x01 << 21; | |
2232 | } | |
4ce794b7 | 2233 | bfd_put_32 (abfd, insn, (bfd_byte *) data + octets); |
2441e016 AM |
2234 | out: |
2235 | return ppc64_elf_branch_reloc (abfd, reloc_entry, symbol, data, | |
2236 | input_section, output_bfd, error_message); | |
805fc799 | 2237 | } |
5bd4f169 | 2238 | |
805fc799 | 2239 | static bfd_reloc_status_type |
4ce794b7 AM |
2240 | ppc64_elf_sectoff_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2241 | void *data, asection *input_section, | |
2242 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2243 | { |
2244 | /* If this is a relocatable link (output_bfd test tells us), just | |
2245 | call the generic function. Any adjustment will be done at final | |
2246 | link time. */ | |
2247 | if (output_bfd != NULL) | |
cedb70c5 | 2248 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 | 2249 | input_section, output_bfd, error_message); |
5bd4f169 | 2250 | |
805fc799 AM |
2251 | /* Subtract the symbol section base address. */ |
2252 | reloc_entry->addend -= symbol->section->output_section->vma; | |
5bd4f169 AM |
2253 | return bfd_reloc_continue; |
2254 | } | |
2255 | ||
805fc799 | 2256 | static bfd_reloc_status_type |
4ce794b7 AM |
2257 | ppc64_elf_sectoff_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2258 | void *data, asection *input_section, | |
2259 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2260 | { |
2261 | /* If this is a relocatable link (output_bfd test tells us), just | |
2262 | call the generic function. Any adjustment will be done at final | |
2263 | link time. */ | |
2264 | if (output_bfd != NULL) | |
cedb70c5 | 2265 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2266 | input_section, output_bfd, error_message); |
2267 | ||
2268 | /* Subtract the symbol section base address. */ | |
2269 | reloc_entry->addend -= symbol->section->output_section->vma; | |
2270 | ||
2271 | /* Adjust the addend for sign extension of the low 16 bits. */ | |
2272 | reloc_entry->addend += 0x8000; | |
2273 | return bfd_reloc_continue; | |
2274 | } | |
2275 | ||
2276 | static bfd_reloc_status_type | |
4ce794b7 AM |
2277 | ppc64_elf_toc_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2278 | void *data, asection *input_section, | |
2279 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2280 | { |
2281 | bfd_vma TOCstart; | |
2282 | ||
2283 | /* If this is a relocatable link (output_bfd test tells us), just | |
2284 | call the generic function. Any adjustment will be done at final | |
2285 | link time. */ | |
2286 | if (output_bfd != NULL) | |
cedb70c5 | 2287 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2288 | input_section, output_bfd, error_message); |
2289 | ||
2290 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
2291 | if (TOCstart == 0) | |
2292 | TOCstart = ppc64_elf_toc (input_section->output_section->owner); | |
2293 | ||
2294 | /* Subtract the TOC base address. */ | |
2295 | reloc_entry->addend -= TOCstart + TOC_BASE_OFF; | |
2296 | return bfd_reloc_continue; | |
2297 | } | |
2298 | ||
2299 | static bfd_reloc_status_type | |
4ce794b7 AM |
2300 | ppc64_elf_toc_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2301 | void *data, asection *input_section, | |
2302 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2303 | { |
2304 | bfd_vma TOCstart; | |
2305 | ||
2306 | /* If this is a relocatable link (output_bfd test tells us), just | |
2307 | call the generic function. Any adjustment will be done at final | |
2308 | link time. */ | |
2309 | if (output_bfd != NULL) | |
cedb70c5 | 2310 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2311 | input_section, output_bfd, error_message); |
2312 | ||
2313 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
2314 | if (TOCstart == 0) | |
2315 | TOCstart = ppc64_elf_toc (input_section->output_section->owner); | |
2316 | ||
2317 | /* Subtract the TOC base address. */ | |
2318 | reloc_entry->addend -= TOCstart + TOC_BASE_OFF; | |
2319 | ||
2320 | /* Adjust the addend for sign extension of the low 16 bits. */ | |
2321 | reloc_entry->addend += 0x8000; | |
2322 | return bfd_reloc_continue; | |
2323 | } | |
2324 | ||
2325 | static bfd_reloc_status_type | |
4ce794b7 AM |
2326 | ppc64_elf_toc64_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2327 | void *data, asection *input_section, | |
2328 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2329 | { |
2330 | bfd_vma TOCstart; | |
2331 | bfd_size_type octets; | |
2332 | ||
2333 | /* If this is a relocatable link (output_bfd test tells us), just | |
2334 | call the generic function. Any adjustment will be done at final | |
2335 | link time. */ | |
2336 | if (output_bfd != NULL) | |
cedb70c5 | 2337 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2338 | input_section, output_bfd, error_message); |
2339 | ||
2340 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
2341 | if (TOCstart == 0) | |
2342 | TOCstart = ppc64_elf_toc (input_section->output_section->owner); | |
2343 | ||
2344 | octets = reloc_entry->address * bfd_octets_per_byte (abfd); | |
2345 | bfd_put_64 (abfd, TOCstart + TOC_BASE_OFF, (bfd_byte *) data + octets); | |
2346 | return bfd_reloc_ok; | |
2347 | } | |
2348 | ||
2349 | static bfd_reloc_status_type | |
4ce794b7 AM |
2350 | ppc64_elf_unhandled_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2351 | void *data, asection *input_section, | |
2352 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2353 | { |
2354 | /* If this is a relocatable link (output_bfd test tells us), just | |
2355 | call the generic function. Any adjustment will be done at final | |
2356 | link time. */ | |
2357 | if (output_bfd != NULL) | |
cedb70c5 | 2358 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2359 | input_section, output_bfd, error_message); |
2360 | ||
2361 | if (error_message != NULL) | |
2362 | { | |
2363 | static char buf[60]; | |
2364 | sprintf (buf, "generic linker can't handle %s", | |
2365 | reloc_entry->howto->name); | |
2366 | *error_message = buf; | |
2367 | } | |
2368 | return bfd_reloc_dangerous; | |
2369 | } | |
2370 | ||
e717da7e AM |
2371 | struct ppc64_elf_obj_tdata |
2372 | { | |
2373 | struct elf_obj_tdata elf; | |
2374 | ||
2375 | /* Shortcuts to dynamic linker sections. */ | |
2376 | asection *got; | |
2377 | asection *relgot; | |
2378 | ||
433817dd AM |
2379 | union { |
2380 | /* Used during garbage collection. We attach global symbols defined | |
2381 | on removed .opd entries to this section so that the sym is removed. */ | |
2382 | asection *deleted_section; | |
2383 | ||
2384 | /* Used when adding symbols. */ | |
2385 | bfd_boolean has_dotsym; | |
2386 | } u; | |
81688140 | 2387 | |
e717da7e AM |
2388 | /* TLS local dynamic got entry handling. Suppose for multiple GOT |
2389 | sections means we potentially need one of these for each input bfd. */ | |
2390 | union { | |
2391 | bfd_signed_vma refcount; | |
2392 | bfd_vma offset; | |
2393 | } tlsld_got; | |
8860955f AM |
2394 | |
2395 | /* A copy of relocs before they are modified for --emit-relocs. */ | |
2396 | Elf_Internal_Rela *opd_relocs; | |
e717da7e AM |
2397 | }; |
2398 | ||
2399 | #define ppc64_elf_tdata(bfd) \ | |
2400 | ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any) | |
2401 | ||
2402 | #define ppc64_tlsld_got(bfd) \ | |
2403 | (&ppc64_elf_tdata (bfd)->tlsld_got) | |
2404 | ||
2405 | /* Override the generic function because we store some extras. */ | |
2406 | ||
2407 | static bfd_boolean | |
2408 | ppc64_elf_mkobject (bfd *abfd) | |
2409 | { | |
2410 | bfd_size_type amt = sizeof (struct ppc64_elf_obj_tdata); | |
2411 | abfd->tdata.any = bfd_zalloc (abfd, amt); | |
2412 | if (abfd->tdata.any == NULL) | |
2413 | return FALSE; | |
2414 | return TRUE; | |
2415 | } | |
2416 | ||
ee75fd95 AM |
2417 | /* Return 1 if target is one of ours. */ |
2418 | ||
7b53ace3 | 2419 | static bfd_boolean |
ee75fd95 | 2420 | is_ppc64_elf_target (const struct bfd_target *targ) |
7b53ace3 AM |
2421 | { |
2422 | extern const bfd_target bfd_elf64_powerpc_vec; | |
2423 | extern const bfd_target bfd_elf64_powerpcle_vec; | |
2424 | ||
2425 | return targ == &bfd_elf64_powerpc_vec || targ == &bfd_elf64_powerpcle_vec; | |
2426 | } | |
2427 | ||
feee612b AM |
2428 | /* Fix bad default arch selected for a 64 bit input bfd when the |
2429 | default is 32 bit. */ | |
2430 | ||
b34976b6 | 2431 | static bfd_boolean |
4ce794b7 | 2432 | ppc64_elf_object_p (bfd *abfd) |
feee612b AM |
2433 | { |
2434 | if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 32) | |
2435 | { | |
2436 | Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd); | |
2437 | ||
2438 | if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS64) | |
2439 | { | |
2440 | /* Relies on arch after 32 bit default being 64 bit default. */ | |
2441 | abfd->arch_info = abfd->arch_info->next; | |
2442 | BFD_ASSERT (abfd->arch_info->bits_per_word == 64); | |
2443 | } | |
2444 | } | |
b34976b6 | 2445 | return TRUE; |
feee612b AM |
2446 | } |
2447 | ||
d37c89e5 AM |
2448 | /* Support for core dump NOTE sections. */ |
2449 | ||
2450 | static bfd_boolean | |
2451 | ppc64_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) | |
2452 | { | |
eea6121a | 2453 | size_t offset, size; |
d37c89e5 AM |
2454 | |
2455 | if (note->descsz != 504) | |
2456 | return FALSE; | |
2457 | ||
2458 | /* pr_cursig */ | |
2459 | elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12); | |
2460 | ||
2461 | /* pr_pid */ | |
2462 | elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 32); | |
2463 | ||
2464 | /* pr_reg */ | |
2465 | offset = 112; | |
eea6121a | 2466 | size = 384; |
d37c89e5 AM |
2467 | |
2468 | /* Make a ".reg/999" section. */ | |
2469 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", | |
eea6121a | 2470 | size, note->descpos + offset); |
d37c89e5 AM |
2471 | } |
2472 | ||
2473 | static bfd_boolean | |
2474 | ppc64_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) | |
2475 | { | |
2476 | if (note->descsz != 136) | |
2477 | return FALSE; | |
2478 | ||
2479 | elf_tdata (abfd)->core_program | |
2480 | = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16); | |
2481 | elf_tdata (abfd)->core_command | |
2482 | = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80); | |
2483 | ||
2484 | return TRUE; | |
2485 | } | |
2486 | ||
5bd4f169 AM |
2487 | /* Merge backend specific data from an object file to the output |
2488 | object file when linking. */ | |
2f6d9989 | 2489 | |
b34976b6 | 2490 | static bfd_boolean |
4ce794b7 | 2491 | ppc64_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd) |
5bd4f169 | 2492 | { |
5bd4f169 AM |
2493 | /* Check if we have the same endianess. */ |
2494 | if (ibfd->xvec->byteorder != obfd->xvec->byteorder | |
87e226ce | 2495 | && ibfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN |
5bd4f169 AM |
2496 | && obfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN) |
2497 | { | |
2498 | const char *msg; | |
2499 | ||
2500 | if (bfd_big_endian (ibfd)) | |
d003868e | 2501 | msg = _("%B: compiled for a big endian system " |
4ce794b7 | 2502 | "and target is little endian"); |
5bd4f169 | 2503 | else |
d003868e | 2504 | msg = _("%B: compiled for a little endian system " |
4ce794b7 | 2505 | "and target is big endian"); |
5bd4f169 | 2506 | |
d003868e | 2507 | (*_bfd_error_handler) (msg, ibfd); |
5bd4f169 AM |
2508 | |
2509 | bfd_set_error (bfd_error_wrong_format); | |
b34976b6 | 2510 | return FALSE; |
5bd4f169 AM |
2511 | } |
2512 | ||
b34976b6 | 2513 | return TRUE; |
5bd4f169 | 2514 | } |
f0abc2a1 | 2515 | |
5d35169e AM |
2516 | /* Add extra PPC sections. */ |
2517 | ||
b35d266b | 2518 | static const struct bfd_elf_special_section ppc64_elf_special_sections[]= |
7f4d3958 L |
2519 | { |
2520 | { ".plt", 4, 0, SHT_NOBITS, 0 }, | |
7dcb9820 | 2521 | { ".sbss", 5, -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, |
551b43fd | 2522 | { ".sdata", 6, -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, |
7dcb9820 AM |
2523 | { ".toc", 4, 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, |
2524 | { ".toc1", 5, 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
2525 | { ".tocbss", 7, 0, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, | |
2526 | { NULL, 0, 0, 0, 0 } | |
5d35169e AM |
2527 | }; |
2528 | ||
f0abc2a1 AM |
2529 | struct _ppc64_elf_section_data |
2530 | { | |
2531 | struct bfd_elf_section_data elf; | |
411e1bfb AM |
2532 | |
2533 | /* An array with one entry for each opd function descriptor. */ | |
f0abc2a1 AM |
2534 | union |
2535 | { | |
411e1bfb | 2536 | /* Points to the function code section for local opd entries. */ |
f0abc2a1 | 2537 | asection **func_sec; |
411e1bfb | 2538 | /* After editing .opd, adjust references to opd local syms. */ |
f0abc2a1 AM |
2539 | long *adjust; |
2540 | } opd; | |
411e1bfb AM |
2541 | |
2542 | /* An array for toc sections, indexed by offset/8. | |
2543 | Specifies the relocation symbol index used at a given toc offset. */ | |
2544 | unsigned *t_symndx; | |
f0abc2a1 AM |
2545 | }; |
2546 | ||
2547 | #define ppc64_elf_section_data(sec) \ | |
411e1bfb | 2548 | ((struct _ppc64_elf_section_data *) elf_section_data (sec)) |
f0abc2a1 AM |
2549 | |
2550 | static bfd_boolean | |
4ce794b7 | 2551 | ppc64_elf_new_section_hook (bfd *abfd, asection *sec) |
f0abc2a1 | 2552 | { |
f592407e AM |
2553 | if (!sec->used_by_bfd) |
2554 | { | |
2555 | struct _ppc64_elf_section_data *sdata; | |
2556 | bfd_size_type amt = sizeof (*sdata); | |
f0abc2a1 | 2557 | |
f592407e AM |
2558 | sdata = bfd_zalloc (abfd, amt); |
2559 | if (sdata == NULL) | |
2560 | return FALSE; | |
2561 | sec->used_by_bfd = sdata; | |
2562 | } | |
f0abc2a1 AM |
2563 | |
2564 | return _bfd_elf_new_section_hook (abfd, sec); | |
2565 | } | |
4025353c AM |
2566 | |
2567 | static void * | |
2568 | get_opd_info (asection * sec) | |
2569 | { | |
2570 | if (sec != NULL | |
2571 | && ppc64_elf_section_data (sec) != NULL | |
2572 | && ppc64_elf_section_data (sec)->opd.adjust != NULL) | |
2573 | return ppc64_elf_section_data (sec)->opd.adjust; | |
2574 | return NULL; | |
2575 | } | |
90e3cdf2 JJ |
2576 | \f |
2577 | /* Parameters for the qsort hook. */ | |
2578 | static asection *synthetic_opd; | |
2579 | static bfd_boolean synthetic_relocatable; | |
2580 | ||
699733f6 | 2581 | /* qsort comparison function for ppc64_elf_get_synthetic_symtab. */ |
90e3cdf2 JJ |
2582 | |
2583 | static int | |
2584 | compare_symbols (const void *ap, const void *bp) | |
2585 | { | |
2586 | const asymbol *a = * (const asymbol **) ap; | |
2587 | const asymbol *b = * (const asymbol **) bp; | |
2588 | ||
699733f6 AM |
2589 | /* Section symbols first. */ |
2590 | if ((a->flags & BSF_SECTION_SYM) && !(b->flags & BSF_SECTION_SYM)) | |
90e3cdf2 | 2591 | return -1; |
699733f6 | 2592 | if (!(a->flags & BSF_SECTION_SYM) && (b->flags & BSF_SECTION_SYM)) |
90e3cdf2 JJ |
2593 | return 1; |
2594 | ||
699733f6 | 2595 | /* then .opd symbols. */ |
90e3cdf2 JJ |
2596 | if (a->section == synthetic_opd && b->section != synthetic_opd) |
2597 | return -1; | |
2598 | if (a->section != synthetic_opd && b->section == synthetic_opd) | |
2599 | return 1; | |
2600 | ||
699733f6 | 2601 | /* then other code symbols. */ |
90e3cdf2 JJ |
2602 | if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) |
2603 | == (SEC_CODE | SEC_ALLOC) | |
2604 | && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
2605 | != (SEC_CODE | SEC_ALLOC)) | |
2606 | return -1; | |
2607 | ||
2608 | if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
2609 | != (SEC_CODE | SEC_ALLOC) | |
2610 | && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
2611 | == (SEC_CODE | SEC_ALLOC)) | |
2612 | return 1; | |
2613 | ||
2614 | if (synthetic_relocatable) | |
2615 | { | |
2616 | if (a->section->id < b->section->id) | |
2617 | return -1; | |
2618 | ||
2619 | if (a->section->id > b->section->id) | |
2620 | return 1; | |
2621 | } | |
2622 | ||
2623 | if (a->value + a->section->vma < b->value + b->section->vma) | |
2624 | return -1; | |
2625 | ||
2626 | if (a->value + a->section->vma > b->value + b->section->vma) | |
2627 | return 1; | |
2628 | ||
2629 | return 0; | |
2630 | } | |
2631 | ||
699733f6 | 2632 | /* Search SYMS for a symbol of the given VALUE. */ |
90e3cdf2 | 2633 | |
699733f6 AM |
2634 | static asymbol * |
2635 | sym_exists_at (asymbol **syms, long lo, long hi, int id, bfd_vma value) | |
90e3cdf2 | 2636 | { |
699733f6 | 2637 | long mid; |
90e3cdf2 | 2638 | |
699733f6 AM |
2639 | if (id == -1) |
2640 | { | |
2641 | while (lo < hi) | |
2642 | { | |
2643 | mid = (lo + hi) >> 1; | |
2644 | if (syms[mid]->value + syms[mid]->section->vma < value) | |
2645 | lo = mid + 1; | |
2646 | else if (syms[mid]->value + syms[mid]->section->vma > value) | |
2647 | hi = mid; | |
2648 | else | |
2649 | return syms[mid]; | |
2650 | } | |
2651 | } | |
2652 | else | |
2653 | { | |
2654 | while (lo < hi) | |
2655 | { | |
2656 | mid = (lo + hi) >> 1; | |
2657 | if (syms[mid]->section->id < id) | |
2658 | lo = mid + 1; | |
2659 | else if (syms[mid]->section->id > id) | |
2660 | hi = mid; | |
2661 | else if (syms[mid]->value < value) | |
2662 | lo = mid + 1; | |
2663 | else if (syms[mid]->value > value) | |
2664 | hi = mid; | |
2665 | else | |
2666 | return syms[mid]; | |
2667 | } | |
2668 | } | |
2669 | return NULL; | |
90e3cdf2 JJ |
2670 | } |
2671 | ||
699733f6 AM |
2672 | /* Create synthetic symbols, effectively restoring "dot-symbol" function |
2673 | entry syms. */ | |
90e3cdf2 JJ |
2674 | |
2675 | static long | |
a7535cf3 AM |
2676 | ppc64_elf_get_synthetic_symtab (bfd *abfd, |
2677 | long static_count, asymbol **static_syms, | |
2678 | long dyn_count, asymbol **dyn_syms, | |
c9727e01 | 2679 | asymbol **ret) |
90e3cdf2 JJ |
2680 | { |
2681 | asymbol *s; | |
699733f6 AM |
2682 | long i; |
2683 | long count; | |
90e3cdf2 | 2684 | char *names; |
a7535cf3 | 2685 | long symcount, codesecsym, codesecsymend, secsymend, opdsymend; |
699733f6 | 2686 | asection *opd; |
90e3cdf2 | 2687 | bfd_boolean relocatable = (abfd->flags & (EXEC_P | DYNAMIC)) == 0; |
a7535cf3 | 2688 | asymbol **syms; |
90e3cdf2 JJ |
2689 | |
2690 | *ret = NULL; | |
2691 | ||
2692 | opd = bfd_get_section_by_name (abfd, ".opd"); | |
2693 | if (opd == NULL) | |
2694 | return 0; | |
2695 | ||
a7535cf3 | 2696 | symcount = static_count; |
c9727e01 | 2697 | if (!relocatable) |
a7535cf3 | 2698 | symcount += dyn_count; |
90e3cdf2 | 2699 | if (symcount == 0) |
c9727e01 | 2700 | return 0; |
90e3cdf2 | 2701 | |
a7535cf3 AM |
2702 | syms = bfd_malloc ((symcount + 1) * sizeof (*syms)); |
2703 | if (syms == NULL) | |
7356fed5 | 2704 | return -1; |
a7535cf3 AM |
2705 | |
2706 | if (!relocatable && static_count != 0 && dyn_count != 0) | |
2707 | { | |
2708 | /* Use both symbol tables. */ | |
2709 | memcpy (syms, static_syms, static_count * sizeof (*syms)); | |
2710 | memcpy (syms + static_count, dyn_syms, (dyn_count + 1) * sizeof (*syms)); | |
2711 | } | |
2712 | else if (!relocatable && static_count == 0) | |
2713 | memcpy (syms, dyn_syms, (symcount + 1) * sizeof (*syms)); | |
2714 | else | |
2715 | memcpy (syms, static_syms, (symcount + 1) * sizeof (*syms)); | |
2716 | ||
90e3cdf2 JJ |
2717 | synthetic_opd = opd; |
2718 | synthetic_relocatable = relocatable; | |
595da8c5 | 2719 | qsort (syms, symcount, sizeof (*syms), compare_symbols); |
90e3cdf2 | 2720 | |
c9727e01 AM |
2721 | if (!relocatable && symcount > 1) |
2722 | { | |
2723 | long j; | |
2724 | /* Trim duplicate syms, since we may have merged the normal and | |
2725 | dynamic symbols. Actually, we only care about syms that have | |
3b36f7e6 | 2726 | different values, so trim any with the same value. */ |
c9727e01 AM |
2727 | for (i = 1, j = 1; i < symcount; ++i) |
2728 | if (syms[i - 1]->value + syms[i - 1]->section->vma | |
2729 | != syms[i]->value + syms[i]->section->vma) | |
2730 | syms[j++] = syms[i]; | |
2731 | symcount = j; | |
2732 | } | |
2733 | ||
699733f6 AM |
2734 | i = 0; |
2735 | if (syms[i]->section == opd) | |
2736 | ++i; | |
2737 | codesecsym = i; | |
90e3cdf2 | 2738 | |
699733f6 AM |
2739 | for (; i < symcount; ++i) |
2740 | if (((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
2741 | != (SEC_CODE | SEC_ALLOC)) | |
2742 | || (syms[i]->flags & BSF_SECTION_SYM) == 0) | |
2743 | break; | |
2744 | codesecsymend = i; | |
90e3cdf2 | 2745 | |
699733f6 AM |
2746 | for (; i < symcount; ++i) |
2747 | if ((syms[i]->flags & BSF_SECTION_SYM) == 0) | |
2748 | break; | |
2749 | secsymend = i; | |
90e3cdf2 | 2750 | |
699733f6 AM |
2751 | for (; i < symcount; ++i) |
2752 | if (syms[i]->section != opd) | |
2753 | break; | |
2754 | opdsymend = i; | |
90e3cdf2 | 2755 | |
699733f6 AM |
2756 | for (; i < symcount; ++i) |
2757 | if ((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
2758 | != (SEC_CODE | SEC_ALLOC)) | |
2759 | break; | |
2760 | symcount = i; | |
2761 | ||
c9727e01 | 2762 | count = 0; |
699733f6 | 2763 | if (opdsymend == secsymend) |
c9727e01 | 2764 | goto done; |
90e3cdf2 | 2765 | |
699733f6 | 2766 | if (relocatable) |
90e3cdf2 | 2767 | { |
699733f6 AM |
2768 | bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean); |
2769 | arelent *r; | |
2770 | size_t size; | |
2771 | long relcount; | |
90e3cdf2 | 2772 | |
699733f6 | 2773 | slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; |
90e3cdf2 | 2774 | relcount = (opd->flags & SEC_RELOC) ? opd->reloc_count : 0; |
7356fed5 | 2775 | if (relcount == 0) |
c9727e01 | 2776 | goto done; |
90e3cdf2 | 2777 | |
7356fed5 AM |
2778 | if (!(*slurp_relocs) (abfd, opd, static_syms, FALSE)) |
2779 | { | |
2780 | count = -1; | |
2781 | goto done; | |
2782 | } | |
2783 | ||
699733f6 | 2784 | size = 0; |
595da8c5 | 2785 | for (i = secsymend, r = opd->relocation; i < opdsymend; ++i) |
699733f6 AM |
2786 | { |
2787 | asymbol *sym; | |
90e3cdf2 | 2788 | |
595da8c5 | 2789 | while (r < opd->relocation + relcount |
699733f6 AM |
2790 | && r->address < syms[i]->value + opd->vma) |
2791 | ++r; | |
90e3cdf2 | 2792 | |
595da8c5 | 2793 | if (r == opd->relocation + relcount) |
699733f6 | 2794 | break; |
90e3cdf2 | 2795 | |
699733f6 AM |
2796 | if (r->address != syms[i]->value + opd->vma) |
2797 | continue; | |
90e3cdf2 | 2798 | |
699733f6 AM |
2799 | if (r->howto->type != R_PPC64_ADDR64) |
2800 | continue; | |
90e3cdf2 | 2801 | |
699733f6 AM |
2802 | sym = *r->sym_ptr_ptr; |
2803 | if (!sym_exists_at (syms, opdsymend, symcount, | |
2804 | sym->section->id, sym->value + r->addend)) | |
2805 | { | |
2806 | ++count; | |
2807 | size += sizeof (asymbol); | |
2808 | size += strlen (syms[i]->name) + 2; | |
2809 | } | |
2810 | } | |
90e3cdf2 | 2811 | |
699733f6 AM |
2812 | s = *ret = bfd_malloc (size); |
2813 | if (s == NULL) | |
2814 | { | |
7356fed5 | 2815 | count = -1; |
c9727e01 | 2816 | goto done; |
699733f6 | 2817 | } |
90e3cdf2 | 2818 | |
699733f6 | 2819 | names = (char *) (s + count); |
90e3cdf2 | 2820 | |
595da8c5 | 2821 | for (i = secsymend, r = opd->relocation; i < opdsymend; ++i) |
90e3cdf2 | 2822 | { |
699733f6 | 2823 | asymbol *sym; |
90e3cdf2 | 2824 | |
595da8c5 | 2825 | while (r < opd->relocation + relcount |
699733f6 AM |
2826 | && r->address < syms[i]->value + opd->vma) |
2827 | ++r; | |
90e3cdf2 | 2828 | |
595da8c5 | 2829 | if (r == opd->relocation + relcount) |
699733f6 AM |
2830 | break; |
2831 | ||
2832 | if (r->address != syms[i]->value + opd->vma) | |
2833 | continue; | |
2834 | ||
2835 | if (r->howto->type != R_PPC64_ADDR64) | |
2836 | continue; | |
90e3cdf2 | 2837 | |
699733f6 AM |
2838 | sym = *r->sym_ptr_ptr; |
2839 | if (!sym_exists_at (syms, opdsymend, symcount, | |
2840 | sym->section->id, sym->value + r->addend)) | |
2841 | { | |
2842 | size_t len; | |
2843 | ||
2844 | *s = *syms[i]; | |
2845 | s->section = sym->section; | |
2846 | s->value = sym->value + r->addend; | |
2847 | s->name = names; | |
2848 | *names++ = '.'; | |
2849 | len = strlen (syms[i]->name); | |
2850 | memcpy (names, syms[i]->name, len + 1); | |
2851 | names += len + 1; | |
2852 | s++; | |
2853 | } | |
2854 | } | |
2855 | } | |
2856 | else | |
90e3cdf2 | 2857 | { |
699733f6 AM |
2858 | bfd_byte *contents; |
2859 | size_t size; | |
90e3cdf2 | 2860 | |
699733f6 AM |
2861 | if (!bfd_malloc_and_get_section (abfd, opd, &contents)) |
2862 | { | |
2863 | if (contents) | |
c9727e01 AM |
2864 | { |
2865 | free_contents_and_exit: | |
2866 | free (contents); | |
2867 | } | |
7356fed5 | 2868 | count = -1; |
c9727e01 | 2869 | goto done; |
699733f6 | 2870 | } |
90e3cdf2 | 2871 | |
699733f6 AM |
2872 | size = 0; |
2873 | for (i = secsymend; i < opdsymend; ++i) | |
2874 | { | |
2875 | bfd_vma ent; | |
90e3cdf2 | 2876 | |
699733f6 AM |
2877 | ent = bfd_get_64 (abfd, contents + syms[i]->value); |
2878 | if (!sym_exists_at (syms, opdsymend, symcount, -1, ent)) | |
2879 | { | |
2880 | ++count; | |
2881 | size += sizeof (asymbol); | |
2882 | size += strlen (syms[i]->name) + 2; | |
2883 | } | |
2884 | } | |
90e3cdf2 | 2885 | |
699733f6 AM |
2886 | s = *ret = bfd_malloc (size); |
2887 | if (s == NULL) | |
7356fed5 | 2888 | goto free_contents_and_exit; |
90e3cdf2 | 2889 | |
699733f6 | 2890 | names = (char *) (s + count); |
90e3cdf2 | 2891 | |
699733f6 | 2892 | for (i = secsymend; i < opdsymend; ++i) |
90e3cdf2 | 2893 | { |
699733f6 | 2894 | bfd_vma ent; |
90e3cdf2 | 2895 | |
699733f6 AM |
2896 | ent = bfd_get_64 (abfd, contents + syms[i]->value); |
2897 | if (!sym_exists_at (syms, opdsymend, symcount, -1, ent)) | |
90e3cdf2 | 2898 | { |
c9727e01 | 2899 | long lo, hi; |
699733f6 | 2900 | size_t len; |
c9727e01 | 2901 | asection *sec = abfd->sections; |
90e3cdf2 | 2902 | |
699733f6 AM |
2903 | *s = *syms[i]; |
2904 | lo = codesecsym; | |
2905 | hi = codesecsymend; | |
2906 | while (lo < hi) | |
2907 | { | |
c9727e01 | 2908 | long mid = (lo + hi) >> 1; |
699733f6 AM |
2909 | if (syms[mid]->section->vma < ent) |
2910 | lo = mid + 1; | |
2911 | else if (syms[mid]->section->vma > ent) | |
2912 | hi = mid; | |
2913 | else | |
c9727e01 AM |
2914 | { |
2915 | sec = syms[mid]->section; | |
2916 | break; | |
2917 | } | |
699733f6 AM |
2918 | } |
2919 | ||
c9727e01 | 2920 | if (lo >= hi && lo > codesecsym) |
699733f6 | 2921 | sec = syms[lo - 1]->section; |
699733f6 AM |
2922 | |
2923 | for (; sec != NULL; sec = sec->next) | |
2924 | { | |
2925 | if (sec->vma > ent) | |
2926 | break; | |
2927 | if ((sec->flags & SEC_ALLOC) == 0 | |
2928 | || (sec->flags & SEC_LOAD) == 0) | |
2929 | break; | |
2930 | if ((sec->flags & SEC_CODE) != 0) | |
2931 | s->section = sec; | |
2932 | } | |
2933 | s->value = ent - s->section->vma; | |
2934 | s->name = names; | |
2935 | *names++ = '.'; | |
2936 | len = strlen (syms[i]->name); | |
2937 | memcpy (names, syms[i]->name, len + 1); | |
2938 | names += len + 1; | |
2939 | s++; | |
90e3cdf2 | 2940 | } |
90e3cdf2 | 2941 | } |
699733f6 | 2942 | free (contents); |
90e3cdf2 JJ |
2943 | } |
2944 | ||
c9727e01 | 2945 | done: |
a7535cf3 | 2946 | free (syms); |
90e3cdf2 JJ |
2947 | return count; |
2948 | } | |
5bd4f169 | 2949 | \f |
65f38f15 AM |
2950 | /* The following functions are specific to the ELF linker, while |
2951 | functions above are used generally. Those named ppc64_elf_* are | |
2952 | called by the main ELF linker code. They appear in this file more | |
2953 | or less in the order in which they are called. eg. | |
2954 | ppc64_elf_check_relocs is called early in the link process, | |
2955 | ppc64_elf_finish_dynamic_sections is one of the last functions | |
e86ce104 AM |
2956 | called. |
2957 | ||
2958 | PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that | |
2959 | functions have both a function code symbol and a function descriptor | |
2960 | symbol. A call to foo in a relocatable object file looks like: | |
2961 | ||
2962 | . .text | |
2963 | . x: | |
2964 | . bl .foo | |
2965 | . nop | |
2966 | ||
2967 | The function definition in another object file might be: | |
2968 | ||
2969 | . .section .opd | |
2970 | . foo: .quad .foo | |
2971 | . .quad .TOC.@tocbase | |
2972 | . .quad 0 | |
2973 | . | |
2974 | . .text | |
2975 | . .foo: blr | |
2976 | ||
2977 | When the linker resolves the call during a static link, the branch | |
2978 | unsurprisingly just goes to .foo and the .opd information is unused. | |
2979 | If the function definition is in a shared library, things are a little | |
2980 | different: The call goes via a plt call stub, the opd information gets | |
2981 | copied to the plt, and the linker patches the nop. | |
2982 | ||
2983 | . x: | |
2984 | . bl .foo_stub | |
2985 | . ld 2,40(1) | |
2986 | . | |
2987 | . | |
2988 | . .foo_stub: | |
2989 | . addis 12,2,Lfoo@toc@ha # in practice, the call stub | |
411e1bfb | 2990 | . addi 12,12,Lfoo@toc@l # is slightly optimized, but |
e86ce104 AM |
2991 | . std 2,40(1) # this is the general idea |
2992 | . ld 11,0(12) | |
2993 | . ld 2,8(12) | |
2994 | . mtctr 11 | |
2995 | . ld 11,16(12) | |
2996 | . bctr | |
2997 | . | |
2998 | . .section .plt | |
2999 | . Lfoo: reloc (R_PPC64_JMP_SLOT, foo) | |
3000 | ||
3001 | The "reloc ()" notation is supposed to indicate that the linker emits | |
3002 | an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd | |
3003 | copying. | |
3004 | ||
3005 | What are the difficulties here? Well, firstly, the relocations | |
3006 | examined by the linker in check_relocs are against the function code | |
3007 | sym .foo, while the dynamic relocation in the plt is emitted against | |
3008 | the function descriptor symbol, foo. Somewhere along the line, we need | |
3009 | to carefully copy dynamic link information from one symbol to the other. | |
3010 | Secondly, the generic part of the elf linker will make .foo a dynamic | |
3011 | symbol as is normal for most other backends. We need foo dynamic | |
3012 | instead, at least for an application final link. However, when | |
3013 | creating a shared library containing foo, we need to have both symbols | |
3014 | dynamic so that references to .foo are satisfied during the early | |
3015 | stages of linking. Otherwise the linker might decide to pull in a | |
8387904d AM |
3016 | definition from some other object, eg. a static library. |
3017 | ||
3018 | Update: As of August 2004, we support a new convention. Function | |
3019 | calls may use the function descriptor symbol, ie. "bl foo". This | |
3020 | behaves exactly as "bl .foo". */ | |
65f38f15 AM |
3021 | |
3022 | /* The linker needs to keep track of the number of relocs that it | |
3023 | decides to copy as dynamic relocs in check_relocs for each symbol. | |
3024 | This is so that it can later discard them if they are found to be | |
3025 | unnecessary. We store the information in a field extending the | |
3026 | regular ELF linker hash table. */ | |
3027 | ||
3028 | struct ppc_dyn_relocs | |
3029 | { | |
3030 | struct ppc_dyn_relocs *next; | |
3031 | ||
3032 | /* The input section of the reloc. */ | |
3033 | asection *sec; | |
3034 | ||
3035 | /* Total number of relocs copied for the input section. */ | |
3036 | bfd_size_type count; | |
3037 | ||
3038 | /* Number of pc-relative relocs copied for the input section. */ | |
3039 | bfd_size_type pc_count; | |
3040 | }; | |
3041 | ||
411e1bfb AM |
3042 | /* Track GOT entries needed for a given symbol. We might need more |
3043 | than one got entry per symbol. */ | |
3044 | struct got_entry | |
3045 | { | |
3046 | struct got_entry *next; | |
3047 | ||
e7b938ca | 3048 | /* The symbol addend that we'll be placing in the GOT. */ |
411e1bfb AM |
3049 | bfd_vma addend; |
3050 | ||
e717da7e AM |
3051 | /* Unlike other ELF targets, we use separate GOT entries for the same |
3052 | symbol referenced from different input files. This is to support | |
3053 | automatic multiple TOC/GOT sections, where the TOC base can vary | |
3054 | from one input file to another. | |
3055 | ||
3056 | Point to the BFD owning this GOT entry. */ | |
3057 | bfd *owner; | |
3058 | ||
3059 | /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD, | |
3060 | TLS_TPREL or TLS_DTPREL for tls entries. */ | |
3061 | char tls_type; | |
3062 | ||
e7b938ca | 3063 | /* Reference count until size_dynamic_sections, GOT offset thereafter. */ |
411e1bfb AM |
3064 | union |
3065 | { | |
3066 | bfd_signed_vma refcount; | |
3067 | bfd_vma offset; | |
3068 | } got; | |
411e1bfb AM |
3069 | }; |
3070 | ||
3071 | /* The same for PLT. */ | |
3072 | struct plt_entry | |
3073 | { | |
3074 | struct plt_entry *next; | |
3075 | ||
3076 | bfd_vma addend; | |
3077 | ||
3078 | union | |
3079 | { | |
3080 | bfd_signed_vma refcount; | |
3081 | bfd_vma offset; | |
3082 | } plt; | |
3083 | }; | |
3084 | ||
65f38f15 | 3085 | /* Of those relocs that might be copied as dynamic relocs, this macro |
58ac9f71 AM |
3086 | selects those that must be copied when linking a shared library, |
3087 | even when the symbol is local. */ | |
65f38f15 | 3088 | |
411e1bfb | 3089 | #define MUST_BE_DYN_RELOC(RTYPE) \ |
805fc799 AM |
3090 | ((RTYPE) != R_PPC64_REL32 \ |
3091 | && (RTYPE) != R_PPC64_REL64 \ | |
04c9666a | 3092 | && (RTYPE) != R_PPC64_REL30) |
65f38f15 | 3093 | |
f4656909 AM |
3094 | /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid |
3095 | copying dynamic variables from a shared lib into an app's dynbss | |
3096 | section, and instead use a dynamic relocation to point into the | |
5d35169e AM |
3097 | shared lib. With code that gcc generates, it's vital that this be |
3098 | enabled; In the PowerPC64 ABI, the address of a function is actually | |
3099 | the address of a function descriptor, which resides in the .opd | |
3100 | section. gcc uses the descriptor directly rather than going via the | |
3101 | GOT as some other ABI's do, which means that initialized function | |
3102 | pointers must reference the descriptor. Thus, a function pointer | |
3103 | initialized to the address of a function in a shared library will | |
3104 | either require a copy reloc, or a dynamic reloc. Using a copy reloc | |
4cc11e76 | 3105 | redefines the function descriptor symbol to point to the copy. This |
5d35169e AM |
3106 | presents a problem as a plt entry for that function is also |
3107 | initialized from the function descriptor symbol and the copy reloc | |
3108 | may not be initialized first. */ | |
a23b6845 | 3109 | #define ELIMINATE_COPY_RELOCS 1 |
f4656909 | 3110 | |
721956f4 AM |
3111 | /* Section name for stubs is the associated section name plus this |
3112 | string. */ | |
3113 | #define STUB_SUFFIX ".stub" | |
3114 | ||
3115 | /* Linker stubs. | |
3116 | ppc_stub_long_branch: | |
3117 | Used when a 14 bit branch (or even a 24 bit branch) can't reach its | |
3118 | destination, but a 24 bit branch in a stub section will reach. | |
3119 | . b dest | |
3120 | ||
3121 | ppc_stub_plt_branch: | |
3122 | Similar to the above, but a 24 bit branch in the stub section won't | |
3123 | reach its destination. | |
87e226ce AM |
3124 | . addis %r12,%r2,xxx@toc@ha |
3125 | . ld %r11,xxx@toc@l(%r12) | |
721956f4 AM |
3126 | . mtctr %r11 |
3127 | . bctr | |
3128 | ||
3129 | ppc_stub_plt_call: | |
2c66dc6c AM |
3130 | Used to call a function in a shared library. If it so happens that |
3131 | the plt entry referenced crosses a 64k boundary, then an extra | |
3132 | "addis %r12,%r12,1" will be inserted before the load at xxx+8 or | |
3133 | xxx+16 as appropriate. | |
87e226ce | 3134 | . addis %r12,%r2,xxx@toc@ha |
721956f4 | 3135 | . std %r2,40(%r1) |
87e226ce AM |
3136 | . ld %r11,xxx+0@toc@l(%r12) |
3137 | . ld %r2,xxx+8@toc@l(%r12) | |
721956f4 | 3138 | . mtctr %r11 |
87e226ce | 3139 | . ld %r11,xxx+16@toc@l(%r12) |
721956f4 | 3140 | . bctr |
ad8e1ba5 AM |
3141 | |
3142 | ppc_stub_long_branch and ppc_stub_plt_branch may also have additional | |
3143 | code to adjust the value and save r2 to support multiple toc sections. | |
3144 | A ppc_stub_long_branch with an r2 offset looks like: | |
3145 | . std %r2,40(%r1) | |
3146 | . addis %r2,%r2,off@ha | |
3147 | . addi %r2,%r2,off@l | |
3148 | . b dest | |
3149 | ||
3150 | A ppc_stub_plt_branch with an r2 offset looks like: | |
3151 | . std %r2,40(%r1) | |
3152 | . addis %r12,%r2,xxx@toc@ha | |
3153 | . ld %r11,xxx@toc@l(%r12) | |
3154 | . addis %r2,%r2,off@ha | |
3155 | . addi %r2,%r2,off@l | |
3156 | . mtctr %r11 | |
3157 | . bctr | |
721956f4 AM |
3158 | */ |
3159 | ||
3160 | enum ppc_stub_type { | |
3161 | ppc_stub_none, | |
3162 | ppc_stub_long_branch, | |
ad8e1ba5 | 3163 | ppc_stub_long_branch_r2off, |
721956f4 | 3164 | ppc_stub_plt_branch, |
ad8e1ba5 | 3165 | ppc_stub_plt_branch_r2off, |
721956f4 AM |
3166 | ppc_stub_plt_call |
3167 | }; | |
3168 | ||
3169 | struct ppc_stub_hash_entry { | |
3170 | ||
3171 | /* Base hash table entry structure. */ | |
3172 | struct bfd_hash_entry root; | |
3173 | ||
ad8e1ba5 AM |
3174 | enum ppc_stub_type stub_type; |
3175 | ||
721956f4 AM |
3176 | /* The stub section. */ |
3177 | asection *stub_sec; | |
3178 | ||
3179 | /* Offset within stub_sec of the beginning of this stub. */ | |
3180 | bfd_vma stub_offset; | |
3181 | ||
3182 | /* Given the symbol's value and its section we can determine its final | |
3183 | value when building the stubs (so the stub knows where to jump. */ | |
3184 | bfd_vma target_value; | |
3185 | asection *target_section; | |
3186 | ||
721956f4 AM |
3187 | /* The symbol table entry, if any, that this was derived from. */ |
3188 | struct ppc_link_hash_entry *h; | |
3189 | ||
411e1bfb AM |
3190 | /* And the reloc addend that this was derived from. */ |
3191 | bfd_vma addend; | |
3192 | ||
721956f4 AM |
3193 | /* Where this stub is being called from, or, in the case of combined |
3194 | stub sections, the first input section in the group. */ | |
3195 | asection *id_sec; | |
3196 | }; | |
3197 | ||
3198 | struct ppc_branch_hash_entry { | |
3199 | ||
3200 | /* Base hash table entry structure. */ | |
3201 | struct bfd_hash_entry root; | |
3202 | ||
c456f082 | 3203 | /* Offset within branch lookup table. */ |
721956f4 AM |
3204 | unsigned int offset; |
3205 | ||
3206 | /* Generation marker. */ | |
3207 | unsigned int iter; | |
3208 | }; | |
65f38f15 AM |
3209 | |
3210 | struct ppc_link_hash_entry | |
3211 | { | |
3212 | struct elf_link_hash_entry elf; | |
3213 | ||
721956f4 AM |
3214 | /* A pointer to the most recently used stub hash entry against this |
3215 | symbol. */ | |
3216 | struct ppc_stub_hash_entry *stub_cache; | |
3217 | ||
65f38f15 AM |
3218 | /* Track dynamic relocs copied for this symbol. */ |
3219 | struct ppc_dyn_relocs *dyn_relocs; | |
e86ce104 | 3220 | |
721956f4 | 3221 | /* Link between function code and descriptor symbols. */ |
34814b9f | 3222 | struct ppc_link_hash_entry *oh; |
721956f4 | 3223 | |
e86ce104 AM |
3224 | /* Flag function code and descriptor symbols. */ |
3225 | unsigned int is_func:1; | |
3226 | unsigned int is_func_descriptor:1; | |
908b32fc | 3227 | unsigned int fake:1; |
411e1bfb | 3228 | |
c5614fa4 AM |
3229 | /* Whether global opd/toc sym has been adjusted or not. |
3230 | After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag | |
3231 | should be set for all globals defined in any opd/toc section. */ | |
754021d0 AM |
3232 | unsigned int adjust_done:1; |
3233 | ||
99877b66 AM |
3234 | /* Set if we twiddled this symbol to weak at some stage. */ |
3235 | unsigned int was_undefined:1; | |
3236 | ||
411e1bfb | 3237 | /* Contexts in which symbol is used in the GOT (or TOC). |
e7b938ca AM |
3238 | TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the |
3239 | corresponding relocs are encountered during check_relocs. | |
3240 | tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to | |
3241 | indicate the corresponding GOT entry type is not needed. | |
3242 | tls_optimize may also set TLS_TPRELGD when a GD reloc turns into | |
3243 | a TPREL one. We use a separate flag rather than setting TPREL | |
3244 | just for convenience in distinguishing the two cases. */ | |
3245 | #define TLS_GD 1 /* GD reloc. */ | |
3246 | #define TLS_LD 2 /* LD reloc. */ | |
3247 | #define TLS_TPREL 4 /* TPREL reloc, => IE. */ | |
3248 | #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */ | |
3249 | #define TLS_TLS 16 /* Any TLS reloc. */ | |
3250 | #define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */ | |
3251 | #define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */ | |
3252 | char tls_mask; | |
65f38f15 AM |
3253 | }; |
3254 | ||
3255 | /* ppc64 ELF linker hash table. */ | |
3256 | ||
3257 | struct ppc_link_hash_table | |
3258 | { | |
3259 | struct elf_link_hash_table elf; | |
3260 | ||
721956f4 AM |
3261 | /* The stub hash table. */ |
3262 | struct bfd_hash_table stub_hash_table; | |
3263 | ||
3264 | /* Another hash table for plt_branch stubs. */ | |
3265 | struct bfd_hash_table branch_hash_table; | |
3266 | ||
3267 | /* Linker stub bfd. */ | |
3268 | bfd *stub_bfd; | |
3269 | ||
3270 | /* Linker call-backs. */ | |
4ce794b7 AM |
3271 | asection * (*add_stub_section) (const char *, asection *); |
3272 | void (*layout_sections_again) (void); | |
721956f4 AM |
3273 | |
3274 | /* Array to keep track of which stub sections have been created, and | |
3275 | information on stub grouping. */ | |
3276 | struct map_stub { | |
3277 | /* This is the section to which stubs in the group will be attached. */ | |
3278 | asection *link_sec; | |
3279 | /* The stub section. */ | |
3280 | asection *stub_sec; | |
ad8e1ba5 AM |
3281 | /* Along with elf_gp, specifies the TOC pointer used in this group. */ |
3282 | bfd_vma toc_off; | |
721956f4 AM |
3283 | } *stub_group; |
3284 | ||
ad8e1ba5 AM |
3285 | /* Temp used when calculating TOC pointers. */ |
3286 | bfd_vma toc_curr; | |
3287 | ||
8f3bab57 AM |
3288 | /* Highest input section id. */ |
3289 | int top_id; | |
3290 | ||
734b6cf9 AM |
3291 | /* Highest output section index. */ |
3292 | int top_index; | |
3293 | ||
3294 | /* List of input sections for each output section. */ | |
3295 | asection **input_list; | |
721956f4 | 3296 | |
65f38f15 | 3297 | /* Short-cuts to get to dynamic linker sections. */ |
4ce794b7 | 3298 | asection *got; |
4ce794b7 AM |
3299 | asection *plt; |
3300 | asection *relplt; | |
3301 | asection *dynbss; | |
3302 | asection *relbss; | |
3303 | asection *glink; | |
82bd7b59 | 3304 | asection *sfpr; |
4ce794b7 AM |
3305 | asection *brlt; |
3306 | asection *relbrlt; | |
ec338859 | 3307 | |
8387904d AM |
3308 | /* Shortcut to .__tls_get_addr and __tls_get_addr. */ |
3309 | struct ppc_link_hash_entry *tls_get_addr; | |
3310 | struct ppc_link_hash_entry *tls_get_addr_fd; | |
411e1bfb | 3311 | |
9b5ecbd0 AM |
3312 | /* Statistics. */ |
3313 | unsigned long stub_count[ppc_stub_plt_call]; | |
3314 | ||
ee75fd95 AM |
3315 | /* Number of stubs against global syms. */ |
3316 | unsigned long stub_globals; | |
3317 | ||
ad8e1ba5 | 3318 | /* Set if we should emit symbols for stubs. */ |
99877b66 | 3319 | unsigned int emit_stub_syms:1; |
ad8e1ba5 | 3320 | |
4c52953f AM |
3321 | /* Support for multiple toc sections. */ |
3322 | unsigned int no_multi_toc:1; | |
3323 | unsigned int multi_toc_needed:1; | |
3324 | ||
5d1634d7 | 3325 | /* Set on error. */ |
99877b66 | 3326 | unsigned int stub_error:1; |
721956f4 AM |
3327 | |
3328 | /* Flag set when small branches are detected. Used to | |
3329 | select suitable defaults for the stub group size. */ | |
99877b66 AM |
3330 | unsigned int has_14bit_branch:1; |
3331 | ||
3332 | /* Temp used by ppc64_elf_check_directives. */ | |
3333 | unsigned int twiddled_syms:1; | |
721956f4 AM |
3334 | |
3335 | /* Incremented every time we size stubs. */ | |
3336 | unsigned int stub_iteration; | |
5d1634d7 | 3337 | |
ec338859 AM |
3338 | /* Small local sym to section mapping cache. */ |
3339 | struct sym_sec_cache sym_sec; | |
65f38f15 AM |
3340 | }; |
3341 | ||
4c52953f AM |
3342 | /* Rename some of the generic section flags to better document how they |
3343 | are used here. */ | |
3344 | #define has_toc_reloc has_gp_reloc | |
3345 | #define makes_toc_func_call need_finalize_relax | |
3346 | #define call_check_in_progress reloc_done | |
3347 | ||
65f38f15 AM |
3348 | /* Get the ppc64 ELF linker hash table from a link_info structure. */ |
3349 | ||
3350 | #define ppc_hash_table(p) \ | |
3351 | ((struct ppc_link_hash_table *) ((p)->hash)) | |
3352 | ||
721956f4 AM |
3353 | #define ppc_stub_hash_lookup(table, string, create, copy) \ |
3354 | ((struct ppc_stub_hash_entry *) \ | |
3355 | bfd_hash_lookup ((table), (string), (create), (copy))) | |
3356 | ||
3357 | #define ppc_branch_hash_lookup(table, string, create, copy) \ | |
3358 | ((struct ppc_branch_hash_entry *) \ | |
3359 | bfd_hash_lookup ((table), (string), (create), (copy))) | |
3360 | ||
3361 | /* Create an entry in the stub hash table. */ | |
3362 | ||
3363 | static struct bfd_hash_entry * | |
4ce794b7 AM |
3364 | stub_hash_newfunc (struct bfd_hash_entry *entry, |
3365 | struct bfd_hash_table *table, | |
3366 | const char *string) | |
721956f4 AM |
3367 | { |
3368 | /* Allocate the structure if it has not already been allocated by a | |
3369 | subclass. */ | |
3370 | if (entry == NULL) | |
3371 | { | |
3372 | entry = bfd_hash_allocate (table, sizeof (struct ppc_stub_hash_entry)); | |
3373 | if (entry == NULL) | |
3374 | return entry; | |
3375 | } | |
3376 | ||
3377 | /* Call the allocation method of the superclass. */ | |
3378 | entry = bfd_hash_newfunc (entry, table, string); | |
3379 | if (entry != NULL) | |
3380 | { | |
3381 | struct ppc_stub_hash_entry *eh; | |
3382 | ||
3383 | /* Initialize the local fields. */ | |
3384 | eh = (struct ppc_stub_hash_entry *) entry; | |
ad8e1ba5 | 3385 | eh->stub_type = ppc_stub_none; |
721956f4 AM |
3386 | eh->stub_sec = NULL; |
3387 | eh->stub_offset = 0; | |
3388 | eh->target_value = 0; | |
3389 | eh->target_section = NULL; | |
721956f4 AM |
3390 | eh->h = NULL; |
3391 | eh->id_sec = NULL; | |
3392 | } | |
3393 | ||
3394 | return entry; | |
3395 | } | |
3396 | ||
3397 | /* Create an entry in the branch hash table. */ | |
3398 | ||
3399 | static struct bfd_hash_entry * | |
4ce794b7 AM |
3400 | branch_hash_newfunc (struct bfd_hash_entry *entry, |
3401 | struct bfd_hash_table *table, | |
3402 | const char *string) | |
721956f4 AM |
3403 | { |
3404 | /* Allocate the structure if it has not already been allocated by a | |
3405 | subclass. */ | |
3406 | if (entry == NULL) | |
3407 | { | |
3408 | entry = bfd_hash_allocate (table, sizeof (struct ppc_branch_hash_entry)); | |
3409 | if (entry == NULL) | |
3410 | return entry; | |
3411 | } | |
3412 | ||
3413 | /* Call the allocation method of the superclass. */ | |
3414 | entry = bfd_hash_newfunc (entry, table, string); | |
3415 | if (entry != NULL) | |
3416 | { | |
3417 | struct ppc_branch_hash_entry *eh; | |
3418 | ||
3419 | /* Initialize the local fields. */ | |
3420 | eh = (struct ppc_branch_hash_entry *) entry; | |
3421 | eh->offset = 0; | |
3422 | eh->iter = 0; | |
3423 | } | |
3424 | ||
3425 | return entry; | |
3426 | } | |
3427 | ||
65f38f15 AM |
3428 | /* Create an entry in a ppc64 ELF linker hash table. */ |
3429 | ||
3430 | static struct bfd_hash_entry * | |
4ce794b7 AM |
3431 | link_hash_newfunc (struct bfd_hash_entry *entry, |
3432 | struct bfd_hash_table *table, | |
3433 | const char *string) | |
65f38f15 AM |
3434 | { |
3435 | /* Allocate the structure if it has not already been allocated by a | |
3436 | subclass. */ | |
3437 | if (entry == NULL) | |
3438 | { | |
3439 | entry = bfd_hash_allocate (table, sizeof (struct ppc_link_hash_entry)); | |
3440 | if (entry == NULL) | |
3441 | return entry; | |
3442 | } | |
3443 | ||
3444 | /* Call the allocation method of the superclass. */ | |
3445 | entry = _bfd_elf_link_hash_newfunc (entry, table, string); | |
3446 | if (entry != NULL) | |
3447 | { | |
3448 | struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) entry; | |
3449 | ||
908b32fc AM |
3450 | memset (&eh->stub_cache, 0, |
3451 | (sizeof (struct ppc_link_hash_entry) | |
3452 | - offsetof (struct ppc_link_hash_entry, stub_cache))); | |
65f38f15 AM |
3453 | } |
3454 | ||
3455 | return entry; | |
3456 | } | |
3457 | ||
3458 | /* Create a ppc64 ELF linker hash table. */ | |
3459 | ||
3460 | static struct bfd_link_hash_table * | |
4ce794b7 | 3461 | ppc64_elf_link_hash_table_create (bfd *abfd) |
65f38f15 AM |
3462 | { |
3463 | struct ppc_link_hash_table *htab; | |
3464 | bfd_size_type amt = sizeof (struct ppc_link_hash_table); | |
3465 | ||
4ce794b7 | 3466 | htab = bfd_zmalloc (amt); |
65f38f15 AM |
3467 | if (htab == NULL) |
3468 | return NULL; | |
3469 | ||
66eb6687 AM |
3470 | if (!_bfd_elf_link_hash_table_init (&htab->elf, abfd, link_hash_newfunc, |
3471 | sizeof (struct ppc_link_hash_entry))) | |
65f38f15 | 3472 | { |
e2d34d7d | 3473 | free (htab); |
65f38f15 AM |
3474 | return NULL; |
3475 | } | |
3476 | ||
721956f4 | 3477 | /* Init the stub hash table too. */ |
66eb6687 AM |
3478 | if (!bfd_hash_table_init (&htab->stub_hash_table, stub_hash_newfunc, |
3479 | sizeof (struct ppc_stub_hash_entry))) | |
721956f4 AM |
3480 | return NULL; |
3481 | ||
3482 | /* And the branch hash table. */ | |
66eb6687 AM |
3483 | if (!bfd_hash_table_init (&htab->branch_hash_table, branch_hash_newfunc, |
3484 | sizeof (struct ppc_branch_hash_entry))) | |
721956f4 AM |
3485 | return NULL; |
3486 | ||
3254fd24 AM |
3487 | /* Initializing two fields of the union is just cosmetic. We really |
3488 | only care about glist, but when compiled on a 32-bit host the | |
3489 | bfd_vma fields are larger. Setting the bfd_vma to zero makes | |
3490 | debugger inspection of these fields look nicer. */ | |
a6aa5195 AM |
3491 | htab->elf.init_got_refcount.refcount = 0; |
3492 | htab->elf.init_got_refcount.glist = NULL; | |
3493 | htab->elf.init_plt_refcount.refcount = 0; | |
3494 | htab->elf.init_plt_refcount.glist = NULL; | |
3495 | htab->elf.init_got_offset.offset = 0; | |
3496 | htab->elf.init_got_offset.glist = NULL; | |
3497 | htab->elf.init_plt_offset.offset = 0; | |
3498 | htab->elf.init_plt_offset.glist = NULL; | |
3254fd24 | 3499 | |
65f38f15 AM |
3500 | return &htab->elf.root; |
3501 | } | |
3502 | ||
721956f4 AM |
3503 | /* Free the derived linker hash table. */ |
3504 | ||
3505 | static void | |
4ce794b7 | 3506 | ppc64_elf_link_hash_table_free (struct bfd_link_hash_table *hash) |
721956f4 AM |
3507 | { |
3508 | struct ppc_link_hash_table *ret = (struct ppc_link_hash_table *) hash; | |
3509 | ||
3510 | bfd_hash_table_free (&ret->stub_hash_table); | |
3511 | bfd_hash_table_free (&ret->branch_hash_table); | |
3512 | _bfd_generic_link_hash_table_free (hash); | |
3513 | } | |
3514 | ||
e717da7e AM |
3515 | /* Satisfy the ELF linker by filling in some fields in our fake bfd. */ |
3516 | ||
3517 | void | |
3518 | ppc64_elf_init_stub_bfd (bfd *abfd, struct bfd_link_info *info) | |
3519 | { | |
3520 | struct ppc_link_hash_table *htab; | |
3521 | ||
3522 | elf_elfheader (abfd)->e_ident[EI_CLASS] = ELFCLASS64; | |
3523 | ||
3524 | /* Always hook our dynamic sections into the first bfd, which is the | |
3525 | linker created stub bfd. This ensures that the GOT header is at | |
3526 | the start of the output TOC section. */ | |
3527 | htab = ppc_hash_table (info); | |
3528 | htab->stub_bfd = abfd; | |
3529 | htab->elf.dynobj = abfd; | |
3530 | } | |
3531 | ||
721956f4 AM |
3532 | /* Build a name for an entry in the stub hash table. */ |
3533 | ||
3534 | static char * | |
4ce794b7 AM |
3535 | ppc_stub_name (const asection *input_section, |
3536 | const asection *sym_sec, | |
3537 | const struct ppc_link_hash_entry *h, | |
3538 | const Elf_Internal_Rela *rel) | |
721956f4 AM |
3539 | { |
3540 | char *stub_name; | |
3541 | bfd_size_type len; | |
3542 | ||
3543 | /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31 | |
3544 | offsets from a sym as a branch target? In fact, we could | |
3545 | probably assume the addend is always zero. */ | |
3546 | BFD_ASSERT (((int) rel->r_addend & 0xffffffff) == rel->r_addend); | |
3547 | ||
3548 | if (h) | |
3549 | { | |
3550 | len = 8 + 1 + strlen (h->elf.root.root.string) + 1 + 8 + 1; | |
3551 | stub_name = bfd_malloc (len); | |
46de2a7c AM |
3552 | if (stub_name == NULL) |
3553 | return stub_name; | |
3554 | ||
3555 | sprintf (stub_name, "%08x.%s+%x", | |
3556 | input_section->id & 0xffffffff, | |
3557 | h->elf.root.root.string, | |
3558 | (int) rel->r_addend & 0xffffffff); | |
721956f4 AM |
3559 | } |
3560 | else | |
3561 | { | |
ad8e1ba5 | 3562 | len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1; |
721956f4 | 3563 | stub_name = bfd_malloc (len); |
46de2a7c AM |
3564 | if (stub_name == NULL) |
3565 | return stub_name; | |
3566 | ||
3567 | sprintf (stub_name, "%08x.%x:%x+%x", | |
3568 | input_section->id & 0xffffffff, | |
3569 | sym_sec->id & 0xffffffff, | |
3570 | (int) ELF64_R_SYM (rel->r_info) & 0xffffffff, | |
3571 | (int) rel->r_addend & 0xffffffff); | |
721956f4 | 3572 | } |
ee75fd95 AM |
3573 | if (stub_name[len - 2] == '+' && stub_name[len - 1] == '0') |
3574 | stub_name[len - 2] = 0; | |
721956f4 AM |
3575 | return stub_name; |
3576 | } | |
3577 | ||
3578 | /* Look up an entry in the stub hash. Stub entries are cached because | |
3579 | creating the stub name takes a bit of time. */ | |
3580 | ||
3581 | static struct ppc_stub_hash_entry * | |
4ce794b7 AM |
3582 | ppc_get_stub_entry (const asection *input_section, |
3583 | const asection *sym_sec, | |
039b3fef | 3584 | struct ppc_link_hash_entry *h, |
4ce794b7 AM |
3585 | const Elf_Internal_Rela *rel, |
3586 | struct ppc_link_hash_table *htab) | |
721956f4 AM |
3587 | { |
3588 | struct ppc_stub_hash_entry *stub_entry; | |
721956f4 AM |
3589 | const asection *id_sec; |
3590 | ||
3591 | /* If this input section is part of a group of sections sharing one | |
3592 | stub section, then use the id of the first section in the group. | |
3593 | Stub names need to include a section id, as there may well be | |
3594 | more than one stub used to reach say, printf, and we need to | |
3595 | distinguish between them. */ | |
3596 | id_sec = htab->stub_group[input_section->id].link_sec; | |
3597 | ||
3598 | if (h != NULL && h->stub_cache != NULL | |
3599 | && h->stub_cache->h == h | |
3600 | && h->stub_cache->id_sec == id_sec) | |
3601 | { | |
3602 | stub_entry = h->stub_cache; | |
3603 | } | |
3604 | else | |
3605 | { | |
3606 | char *stub_name; | |
3607 | ||
3608 | stub_name = ppc_stub_name (id_sec, sym_sec, h, rel); | |
3609 | if (stub_name == NULL) | |
3610 | return NULL; | |
3611 | ||
3612 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, | |
b34976b6 | 3613 | stub_name, FALSE, FALSE); |
721956f4 AM |
3614 | if (h != NULL) |
3615 | h->stub_cache = stub_entry; | |
3616 | ||
3617 | free (stub_name); | |
3618 | } | |
3619 | ||
3620 | return stub_entry; | |
3621 | } | |
3622 | ||
3623 | /* Add a new stub entry to the stub hash. Not all fields of the new | |
3624 | stub entry are initialised. */ | |
3625 | ||
3626 | static struct ppc_stub_hash_entry * | |
4ce794b7 AM |
3627 | ppc_add_stub (const char *stub_name, |
3628 | asection *section, | |
3629 | struct ppc_link_hash_table *htab) | |
721956f4 AM |
3630 | { |
3631 | asection *link_sec; | |
3632 | asection *stub_sec; | |
3633 | struct ppc_stub_hash_entry *stub_entry; | |
3634 | ||
3635 | link_sec = htab->stub_group[section->id].link_sec; | |
3636 | stub_sec = htab->stub_group[section->id].stub_sec; | |
3637 | if (stub_sec == NULL) | |
3638 | { | |
3639 | stub_sec = htab->stub_group[link_sec->id].stub_sec; | |
3640 | if (stub_sec == NULL) | |
3641 | { | |
d4c88bbb | 3642 | size_t namelen; |
721956f4 AM |
3643 | bfd_size_type len; |
3644 | char *s_name; | |
3645 | ||
d4c88bbb AM |
3646 | namelen = strlen (link_sec->name); |
3647 | len = namelen + sizeof (STUB_SUFFIX); | |
721956f4 AM |
3648 | s_name = bfd_alloc (htab->stub_bfd, len); |
3649 | if (s_name == NULL) | |
3650 | return NULL; | |
3651 | ||
d4c88bbb AM |
3652 | memcpy (s_name, link_sec->name, namelen); |
3653 | memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX)); | |
721956f4 AM |
3654 | stub_sec = (*htab->add_stub_section) (s_name, link_sec); |
3655 | if (stub_sec == NULL) | |
3656 | return NULL; | |
3657 | htab->stub_group[link_sec->id].stub_sec = stub_sec; | |
3658 | } | |
3659 | htab->stub_group[section->id].stub_sec = stub_sec; | |
3660 | } | |
3661 | ||
3662 | /* Enter this entry into the linker stub hash table. */ | |
3663 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, stub_name, | |
b34976b6 | 3664 | TRUE, FALSE); |
721956f4 AM |
3665 | if (stub_entry == NULL) |
3666 | { | |
d003868e AM |
3667 | (*_bfd_error_handler) (_("%B: cannot create stub entry %s"), |
3668 | section->owner, stub_name); | |
721956f4 AM |
3669 | return NULL; |
3670 | } | |
3671 | ||
3672 | stub_entry->stub_sec = stub_sec; | |
3673 | stub_entry->stub_offset = 0; | |
3674 | stub_entry->id_sec = link_sec; | |
3675 | return stub_entry; | |
3676 | } | |
3677 | ||
82bd7b59 AM |
3678 | /* Create sections for linker generated code. */ |
3679 | ||
b34976b6 | 3680 | static bfd_boolean |
4ce794b7 | 3681 | create_linkage_sections (bfd *dynobj, struct bfd_link_info *info) |
82bd7b59 AM |
3682 | { |
3683 | struct ppc_link_hash_table *htab; | |
3684 | flagword flags; | |
3685 | ||
3686 | htab = ppc_hash_table (info); | |
3687 | ||
3688 | /* Create .sfpr for code to save and restore fp regs. */ | |
3689 | flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY | |
3690 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
3496cb2a L |
3691 | htab->sfpr = bfd_make_section_anyway_with_flags (dynobj, ".sfpr", |
3692 | flags); | |
82bd7b59 | 3693 | if (htab->sfpr == NULL |
82bd7b59 | 3694 | || ! bfd_set_section_alignment (dynobj, htab->sfpr, 2)) |
b34976b6 | 3695 | return FALSE; |
82bd7b59 | 3696 | |
721956f4 | 3697 | /* Create .glink for lazy dynamic linking support. */ |
3496cb2a L |
3698 | htab->glink = bfd_make_section_anyway_with_flags (dynobj, ".glink", |
3699 | flags); | |
4ce794b7 | 3700 | if (htab->glink == NULL |
4ce794b7 | 3701 | || ! bfd_set_section_alignment (dynobj, htab->glink, 2)) |
b34976b6 | 3702 | return FALSE; |
82bd7b59 | 3703 | |
c456f082 AM |
3704 | /* Create branch lookup table for plt_branch stubs. */ |
3705 | if (info->shared) | |
3706 | { | |
3707 | flags = (SEC_ALLOC | SEC_LOAD | |
3708 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
3709 | htab->brlt | |
3710 | = bfd_make_section_anyway_with_flags (dynobj, ".data.rel.ro.brlt", | |
3711 | flags); | |
3712 | } | |
3713 | else | |
3714 | { | |
3715 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | |
3716 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
3717 | htab->brlt | |
3718 | = bfd_make_section_anyway_with_flags (dynobj, ".rodata.brlt", flags); | |
3719 | } | |
3720 | ||
4ce794b7 | 3721 | if (htab->brlt == NULL |
4ce794b7 | 3722 | || ! bfd_set_section_alignment (dynobj, htab->brlt, 3)) |
b34976b6 | 3723 | return FALSE; |
721956f4 | 3724 | |
c456f082 | 3725 | if (info->shared) |
721956f4 AM |
3726 | { |
3727 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | |
3728 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
c456f082 AM |
3729 | htab->relbrlt |
3730 | = bfd_make_section_anyway_with_flags (dynobj, ".rela.data.rel.ro.brlt", | |
3731 | flags); | |
721956f4 | 3732 | } |
c456f082 AM |
3733 | else if (info->emitrelocations) |
3734 | { | |
3735 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | |
3736 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
3737 | htab->relbrlt | |
3738 | = bfd_make_section_anyway_with_flags (dynobj, ".rela.rodata.brlt", | |
3739 | flags); | |
3740 | } | |
3741 | else | |
3742 | return TRUE; | |
3743 | ||
3744 | if (!htab->relbrlt | |
3745 | || ! bfd_set_section_alignment (dynobj, htab->relbrlt, 3)) | |
3746 | return FALSE; | |
3747 | ||
b34976b6 | 3748 | return TRUE; |
82bd7b59 AM |
3749 | } |
3750 | ||
e717da7e AM |
3751 | /* Create .got and .rela.got sections in ABFD, and .got in dynobj if |
3752 | not already done. */ | |
65f38f15 | 3753 | |
b34976b6 | 3754 | static bfd_boolean |
e717da7e | 3755 | create_got_section (bfd *abfd, struct bfd_link_info *info) |
65f38f15 | 3756 | { |
e717da7e AM |
3757 | asection *got, *relgot; |
3758 | flagword flags; | |
3759 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
65f38f15 | 3760 | |
4ce794b7 | 3761 | if (!htab->got) |
e717da7e AM |
3762 | { |
3763 | if (! _bfd_elf_create_got_section (htab->elf.dynobj, info)) | |
3764 | return FALSE; | |
3765 | ||
3766 | htab->got = bfd_get_section_by_name (htab->elf.dynobj, ".got"); | |
3767 | if (!htab->got) | |
3768 | abort (); | |
3769 | } | |
3770 | ||
3771 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY | |
3772 | | SEC_LINKER_CREATED); | |
3773 | ||
c456f082 | 3774 | got = bfd_make_section_anyway_with_flags (abfd, ".got", flags); |
e717da7e | 3775 | if (!got |
e717da7e AM |
3776 | || !bfd_set_section_alignment (abfd, got, 3)) |
3777 | return FALSE; | |
65f38f15 | 3778 | |
c456f082 AM |
3779 | relgot = bfd_make_section_anyway_with_flags (abfd, ".rela.got", |
3780 | flags | SEC_READONLY); | |
e717da7e | 3781 | if (!relgot |
e717da7e | 3782 | || ! bfd_set_section_alignment (abfd, relgot, 3)) |
b34976b6 | 3783 | return FALSE; |
e717da7e AM |
3784 | |
3785 | ppc64_elf_tdata (abfd)->got = got; | |
3786 | ppc64_elf_tdata (abfd)->relgot = relgot; | |
b34976b6 | 3787 | return TRUE; |
65f38f15 | 3788 | } |
5bd4f169 | 3789 | |
82bd7b59 | 3790 | /* Create the dynamic sections, and set up shortcuts. */ |
5bd4f169 | 3791 | |
b34976b6 | 3792 | static bfd_boolean |
4ce794b7 | 3793 | ppc64_elf_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info) |
5bd4f169 | 3794 | { |
65f38f15 | 3795 | struct ppc_link_hash_table *htab; |
5bd4f169 | 3796 | |
65f38f15 | 3797 | if (!_bfd_elf_create_dynamic_sections (dynobj, info)) |
b34976b6 | 3798 | return FALSE; |
65f38f15 | 3799 | |
e717da7e AM |
3800 | htab = ppc_hash_table (info); |
3801 | if (!htab->got) | |
3802 | htab->got = bfd_get_section_by_name (dynobj, ".got"); | |
4ce794b7 AM |
3803 | htab->plt = bfd_get_section_by_name (dynobj, ".plt"); |
3804 | htab->relplt = bfd_get_section_by_name (dynobj, ".rela.plt"); | |
3805 | htab->dynbss = bfd_get_section_by_name (dynobj, ".dynbss"); | |
65f38f15 | 3806 | if (!info->shared) |
4ce794b7 | 3807 | htab->relbss = bfd_get_section_by_name (dynobj, ".rela.bss"); |
65f38f15 | 3808 | |
e717da7e | 3809 | if (!htab->got || !htab->plt || !htab->relplt || !htab->dynbss |
4ce794b7 | 3810 | || (!info->shared && !htab->relbss)) |
65f38f15 AM |
3811 | abort (); |
3812 | ||
b34976b6 | 3813 | return TRUE; |
5bd4f169 AM |
3814 | } |
3815 | ||
40d16e0b AM |
3816 | /* Merge PLT info on FROM with that on TO. */ |
3817 | ||
3818 | static void | |
3819 | move_plt_plist (struct ppc_link_hash_entry *from, | |
3820 | struct ppc_link_hash_entry *to) | |
3821 | { | |
3822 | if (from->elf.plt.plist != NULL) | |
3823 | { | |
3824 | if (to->elf.plt.plist != NULL) | |
3825 | { | |
3826 | struct plt_entry **entp; | |
3827 | struct plt_entry *ent; | |
3828 | ||
3829 | for (entp = &from->elf.plt.plist; (ent = *entp) != NULL; ) | |
3830 | { | |
3831 | struct plt_entry *dent; | |
3832 | ||
3833 | for (dent = to->elf.plt.plist; dent != NULL; dent = dent->next) | |
3834 | if (dent->addend == ent->addend) | |
3835 | { | |
3836 | dent->plt.refcount += ent->plt.refcount; | |
3837 | *entp = ent->next; | |
3838 | break; | |
3839 | } | |
3840 | if (dent == NULL) | |
3841 | entp = &ent->next; | |
3842 | } | |
3843 | *entp = to->elf.plt.plist; | |
3844 | } | |
3845 | ||
3846 | to->elf.plt.plist = from->elf.plt.plist; | |
3847 | from->elf.plt.plist = NULL; | |
3848 | } | |
3849 | } | |
3850 | ||
65f38f15 AM |
3851 | /* Copy the extra info we tack onto an elf_link_hash_entry. */ |
3852 | ||
3853 | static void | |
fcfa13d2 AM |
3854 | ppc64_elf_copy_indirect_symbol (struct bfd_link_info *info, |
3855 | struct elf_link_hash_entry *dir, | |
3856 | struct elf_link_hash_entry *ind) | |
65f38f15 AM |
3857 | { |
3858 | struct ppc_link_hash_entry *edir, *eind; | |
3859 | ||
3860 | edir = (struct ppc_link_hash_entry *) dir; | |
3861 | eind = (struct ppc_link_hash_entry *) ind; | |
3862 | ||
411e1bfb | 3863 | /* Copy over any dynamic relocs we may have on the indirect sym. */ |
bbd7ec4a | 3864 | if (eind->dyn_relocs != NULL) |
65f38f15 | 3865 | { |
bbd7ec4a AM |
3866 | if (edir->dyn_relocs != NULL) |
3867 | { | |
3868 | struct ppc_dyn_relocs **pp; | |
3869 | struct ppc_dyn_relocs *p; | |
3870 | ||
fcfa13d2 | 3871 | /* Add reloc counts against the indirect sym to the direct sym |
bbd7ec4a AM |
3872 | list. Merge any entries against the same section. */ |
3873 | for (pp = &eind->dyn_relocs; (p = *pp) != NULL; ) | |
3874 | { | |
3875 | struct ppc_dyn_relocs *q; | |
3876 | ||
3877 | for (q = edir->dyn_relocs; q != NULL; q = q->next) | |
3878 | if (q->sec == p->sec) | |
3879 | { | |
3880 | q->pc_count += p->pc_count; | |
3881 | q->count += p->count; | |
3882 | *pp = p->next; | |
3883 | break; | |
3884 | } | |
3885 | if (q == NULL) | |
3886 | pp = &p->next; | |
3887 | } | |
3888 | *pp = edir->dyn_relocs; | |
3889 | } | |
3890 | ||
65f38f15 AM |
3891 | edir->dyn_relocs = eind->dyn_relocs; |
3892 | eind->dyn_relocs = NULL; | |
3893 | } | |
65f38f15 | 3894 | |
6349e628 AM |
3895 | edir->is_func |= eind->is_func; |
3896 | edir->is_func_descriptor |= eind->is_func_descriptor; | |
58ac9f71 | 3897 | edir->tls_mask |= eind->tls_mask; |
6349e628 | 3898 | |
81848ca0 | 3899 | /* If called to transfer flags for a weakdef during processing |
f5385ebf | 3900 | of elf_adjust_dynamic_symbol, don't copy NON_GOT_REF. |
81848ca0 | 3901 | We clear it ourselves for ELIMINATE_COPY_RELOCS. */ |
f5385ebf AM |
3902 | if (!(ELIMINATE_COPY_RELOCS |
3903 | && eind->elf.root.type != bfd_link_hash_indirect | |
3904 | && edir->elf.dynamic_adjusted)) | |
3905 | edir->elf.non_got_ref |= eind->elf.non_got_ref; | |
81848ca0 | 3906 | |
f5385ebf AM |
3907 | edir->elf.ref_dynamic |= eind->elf.ref_dynamic; |
3908 | edir->elf.ref_regular |= eind->elf.ref_regular; | |
3909 | edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak; | |
3910 | edir->elf.needs_plt |= eind->elf.needs_plt; | |
6349e628 AM |
3911 | |
3912 | /* If we were called to copy over info for a weak sym, that's all. */ | |
3913 | if (eind->elf.root.type != bfd_link_hash_indirect) | |
3914 | return; | |
3915 | ||
81848ca0 AM |
3916 | /* Copy over got entries that we may have already seen to the |
3917 | symbol which just became indirect. */ | |
411e1bfb AM |
3918 | if (eind->elf.got.glist != NULL) |
3919 | { | |
3920 | if (edir->elf.got.glist != NULL) | |
3921 | { | |
3922 | struct got_entry **entp; | |
3923 | struct got_entry *ent; | |
3924 | ||
3925 | for (entp = &eind->elf.got.glist; (ent = *entp) != NULL; ) | |
3926 | { | |
3927 | struct got_entry *dent; | |
3928 | ||
3929 | for (dent = edir->elf.got.glist; dent != NULL; dent = dent->next) | |
3930 | if (dent->addend == ent->addend | |
e717da7e | 3931 | && dent->owner == ent->owner |
411e1bfb AM |
3932 | && dent->tls_type == ent->tls_type) |
3933 | { | |
3934 | dent->got.refcount += ent->got.refcount; | |
3935 | *entp = ent->next; | |
3936 | break; | |
3937 | } | |
3938 | if (dent == NULL) | |
3939 | entp = &ent->next; | |
3940 | } | |
3941 | *entp = edir->elf.got.glist; | |
3942 | } | |
3943 | ||
3944 | edir->elf.got.glist = eind->elf.got.glist; | |
3945 | eind->elf.got.glist = NULL; | |
3946 | } | |
3947 | ||
3948 | /* And plt entries. */ | |
40d16e0b | 3949 | move_plt_plist (eind, edir); |
411e1bfb | 3950 | |
fcfa13d2 | 3951 | if (eind->elf.dynindx != -1) |
411e1bfb | 3952 | { |
fcfa13d2 AM |
3953 | if (edir->elf.dynindx != -1) |
3954 | _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr, | |
3955 | edir->elf.dynstr_index); | |
411e1bfb AM |
3956 | edir->elf.dynindx = eind->elf.dynindx; |
3957 | edir->elf.dynstr_index = eind->elf.dynstr_index; | |
3958 | eind->elf.dynindx = -1; | |
3959 | eind->elf.dynstr_index = 0; | |
3960 | } | |
411e1bfb AM |
3961 | } |
3962 | ||
8387904d AM |
3963 | /* Find the function descriptor hash entry from the given function code |
3964 | hash entry FH. Link the entries via their OH fields. */ | |
3965 | ||
3966 | static struct ppc_link_hash_entry * | |
3967 | get_fdh (struct ppc_link_hash_entry *fh, struct ppc_link_hash_table *htab) | |
3968 | { | |
3969 | struct ppc_link_hash_entry *fdh = fh->oh; | |
3970 | ||
3971 | if (fdh == NULL) | |
3972 | { | |
3973 | const char *fd_name = fh->elf.root.root.string + 1; | |
3974 | ||
3975 | fdh = (struct ppc_link_hash_entry *) | |
3976 | elf_link_hash_lookup (&htab->elf, fd_name, FALSE, FALSE, FALSE); | |
3977 | if (fdh != NULL) | |
3978 | { | |
3979 | fdh->is_func_descriptor = 1; | |
3980 | fdh->oh = fh; | |
3981 | fh->is_func = 1; | |
3982 | fh->oh = fdh; | |
3983 | } | |
3984 | } | |
3985 | ||
3986 | return fdh; | |
3987 | } | |
3988 | ||
bb700d78 AM |
3989 | /* Make a fake function descriptor sym for the code sym FH. */ |
3990 | ||
3991 | static struct ppc_link_hash_entry * | |
3992 | make_fdh (struct bfd_link_info *info, | |
908b32fc | 3993 | struct ppc_link_hash_entry *fh) |
bb700d78 AM |
3994 | { |
3995 | bfd *abfd; | |
3996 | asymbol *newsym; | |
3997 | struct bfd_link_hash_entry *bh; | |
3998 | struct ppc_link_hash_entry *fdh; | |
3999 | ||
4000 | abfd = fh->elf.root.u.undef.abfd; | |
4001 | newsym = bfd_make_empty_symbol (abfd); | |
4002 | newsym->name = fh->elf.root.root.string + 1; | |
4003 | newsym->section = bfd_und_section_ptr; | |
4004 | newsym->value = 0; | |
908b32fc | 4005 | newsym->flags = BSF_WEAK; |
bb700d78 AM |
4006 | |
4007 | bh = NULL; | |
4008 | if (!_bfd_generic_link_add_one_symbol (info, abfd, newsym->name, | |
4009 | newsym->flags, newsym->section, | |
4010 | newsym->value, NULL, FALSE, FALSE, | |
4011 | &bh)) | |
4012 | return NULL; | |
4013 | ||
4014 | fdh = (struct ppc_link_hash_entry *) bh; | |
4015 | fdh->elf.non_elf = 0; | |
908b32fc AM |
4016 | fdh->fake = 1; |
4017 | fdh->is_func_descriptor = 1; | |
4018 | fdh->oh = fh; | |
4019 | fh->is_func = 1; | |
4020 | fh->oh = fdh; | |
bb700d78 AM |
4021 | return fdh; |
4022 | } | |
4023 | ||
8387904d AM |
4024 | /* Hacks to support old ABI code. |
4025 | When making function calls, old ABI code references function entry | |
4026 | points (dot symbols), while new ABI code references the function | |
4027 | descriptor symbol. We need to make any combination of reference and | |
4028 | definition work together, without breaking archive linking. | |
4029 | ||
4030 | For a defined function "foo" and an undefined call to "bar": | |
4031 | An old object defines "foo" and ".foo", references ".bar" (possibly | |
4032 | "bar" too). | |
4033 | A new object defines "foo" and references "bar". | |
4034 | ||
4035 | A new object thus has no problem with its undefined symbols being | |
4036 | satisfied by definitions in an old object. On the other hand, the | |
4037 | old object won't have ".bar" satisfied by a new object. */ | |
4038 | ||
4039 | /* Fix function descriptor symbols defined in .opd sections to be | |
4040 | function type. */ | |
555cd476 AM |
4041 | |
4042 | static bfd_boolean | |
433817dd | 4043 | ppc64_elf_add_symbol_hook (bfd *ibfd, |
555cd476 AM |
4044 | struct bfd_link_info *info ATTRIBUTE_UNUSED, |
4045 | Elf_Internal_Sym *isym, | |
433817dd | 4046 | const char **name, |
555cd476 AM |
4047 | flagword *flags ATTRIBUTE_UNUSED, |
4048 | asection **sec, | |
4049 | bfd_vma *value ATTRIBUTE_UNUSED) | |
4050 | { | |
8843416a AM |
4051 | if (*sec != NULL |
4052 | && strcmp (bfd_get_section_name (ibfd, *sec), ".opd") == 0) | |
555cd476 | 4053 | isym->st_info = ELF_ST_INFO (ELF_ST_BIND (isym->st_info), STT_FUNC); |
433817dd AM |
4054 | |
4055 | if ((*name)[0] == '.' | |
4056 | && ELF_ST_BIND (isym->st_info) == STB_GLOBAL | |
4057 | && ELF_ST_TYPE (isym->st_info) < STT_SECTION | |
4058 | && is_ppc64_elf_target (ibfd->xvec)) | |
4059 | ppc64_elf_tdata (ibfd)->u.has_dotsym = 1; | |
4060 | ||
555cd476 AM |
4061 | return TRUE; |
4062 | } | |
4063 | ||
8387904d | 4064 | /* This function makes an old ABI object reference to ".bar" cause the |
908b32fc AM |
4065 | inclusion of a new ABI object archive that defines "bar". |
4066 | NAME is a symbol defined in an archive. Return a symbol in the hash | |
4067 | table that might be satisfied by the archive symbols. */ | |
8387904d AM |
4068 | |
4069 | static struct elf_link_hash_entry * | |
4070 | ppc64_elf_archive_symbol_lookup (bfd *abfd, | |
4071 | struct bfd_link_info *info, | |
4072 | const char *name) | |
4073 | { | |
4074 | struct elf_link_hash_entry *h; | |
4075 | char *dot_name; | |
4076 | size_t len; | |
4077 | ||
4078 | h = _bfd_elf_archive_symbol_lookup (abfd, info, name); | |
908b32fc AM |
4079 | if (h != NULL |
4080 | /* Don't return this sym if it is a fake function descriptor | |
4081 | created by add_symbol_adjust. */ | |
4082 | && !(h->root.type == bfd_link_hash_undefweak | |
4083 | && ((struct ppc_link_hash_entry *) h)->fake)) | |
8387904d AM |
4084 | return h; |
4085 | ||
4086 | if (name[0] == '.') | |
4087 | return h; | |
4088 | ||
4089 | len = strlen (name); | |
4090 | dot_name = bfd_alloc (abfd, len + 2); | |
4091 | if (dot_name == NULL) | |
4092 | return (struct elf_link_hash_entry *) 0 - 1; | |
4093 | dot_name[0] = '.'; | |
4094 | memcpy (dot_name + 1, name, len + 1); | |
4095 | h = _bfd_elf_archive_symbol_lookup (abfd, info, dot_name); | |
4096 | bfd_release (abfd, dot_name); | |
4097 | return h; | |
4098 | } | |
4099 | ||
4100 | /* This function satisfies all old ABI object references to ".bar" if a | |
99877b66 AM |
4101 | new ABI object defines "bar". Well, at least, undefined dot symbols |
4102 | are made weak. This stops later archive searches from including an | |
4103 | object if we already have a function descriptor definition. It also | |
35b0ce59 AM |
4104 | prevents the linker complaining about undefined symbols. |
4105 | We also check and correct mismatched symbol visibility here. The | |
4106 | most restrictive visibility of the function descriptor and the | |
4107 | function entry symbol is used. */ | |
8387904d | 4108 | |
bb700d78 AM |
4109 | struct add_symbol_adjust_data |
4110 | { | |
4111 | struct bfd_link_info *info; | |
4112 | bfd_boolean ok; | |
4113 | }; | |
4114 | ||
8387904d AM |
4115 | static bfd_boolean |
4116 | add_symbol_adjust (struct elf_link_hash_entry *h, void *inf) | |
4117 | { | |
bb700d78 | 4118 | struct add_symbol_adjust_data *data; |
8387904d | 4119 | struct ppc_link_hash_table *htab; |
99877b66 | 4120 | struct ppc_link_hash_entry *eh; |
8387904d AM |
4121 | struct ppc_link_hash_entry *fdh; |
4122 | ||
4123 | if (h->root.type == bfd_link_hash_indirect) | |
4124 | return TRUE; | |
4125 | ||
4126 | if (h->root.type == bfd_link_hash_warning) | |
4127 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
4128 | ||
35b0ce59 | 4129 | if (h->root.root.string[0] != '.') |
8387904d AM |
4130 | return TRUE; |
4131 | ||
bb700d78 AM |
4132 | data = inf; |
4133 | htab = ppc_hash_table (data->info); | |
99877b66 AM |
4134 | eh = (struct ppc_link_hash_entry *) h; |
4135 | fdh = get_fdh (eh, htab); | |
bb700d78 | 4136 | if (fdh == NULL |
c4f68ce3 | 4137 | && !data->info->relocatable |
bb700d78 AM |
4138 | && (eh->elf.root.type == bfd_link_hash_undefined |
4139 | || eh->elf.root.type == bfd_link_hash_undefweak) | |
4140 | && eh->elf.ref_regular) | |
4141 | { | |
4142 | /* Make an undefweak function descriptor sym, which is enough to | |
4143 | pull in an --as-needed shared lib, but won't cause link | |
4144 | errors. Archives are handled elsewhere. */ | |
908b32fc | 4145 | fdh = make_fdh (data->info, eh); |
bb700d78 AM |
4146 | if (fdh == NULL) |
4147 | data->ok = FALSE; | |
4148 | else | |
4149 | fdh->elf.ref_regular = 1; | |
4150 | } | |
e87d886e | 4151 | else if (fdh != NULL) |
8387904d | 4152 | { |
35b0ce59 AM |
4153 | unsigned entry_vis = ELF_ST_VISIBILITY (eh->elf.other) - 1; |
4154 | unsigned descr_vis = ELF_ST_VISIBILITY (fdh->elf.other) - 1; | |
4155 | if (entry_vis < descr_vis) | |
4156 | fdh->elf.other += entry_vis - descr_vis; | |
4157 | else if (entry_vis > descr_vis) | |
4158 | eh->elf.other += descr_vis - entry_vis; | |
4159 | ||
e87d886e AM |
4160 | if ((fdh->elf.root.type == bfd_link_hash_defined |
4161 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
4162 | && eh->elf.root.type == bfd_link_hash_undefined) | |
35b0ce59 AM |
4163 | { |
4164 | eh->elf.root.type = bfd_link_hash_undefweak; | |
4165 | eh->was_undefined = 1; | |
4166 | htab->twiddled_syms = 1; | |
4167 | } | |
8387904d | 4168 | } |
99877b66 | 4169 | |
8387904d AM |
4170 | return TRUE; |
4171 | } | |
4172 | ||
4173 | static bfd_boolean | |
433817dd | 4174 | ppc64_elf_check_directives (bfd *abfd, struct bfd_link_info *info) |
8387904d | 4175 | { |
99877b66 | 4176 | struct ppc_link_hash_table *htab; |
bb700d78 | 4177 | struct add_symbol_adjust_data data; |
99877b66 | 4178 | |
433817dd AM |
4179 | if (!is_ppc64_elf_target (abfd->xvec)) |
4180 | return TRUE; | |
4181 | ||
4182 | if (!ppc64_elf_tdata (abfd)->u.has_dotsym) | |
4183 | return TRUE; | |
4184 | ppc64_elf_tdata (abfd)->u.deleted_section = NULL; | |
4185 | ||
99877b66 | 4186 | htab = ppc_hash_table (info); |
ee75fd95 | 4187 | if (!is_ppc64_elf_target (htab->elf.root.creator)) |
35b0ce59 AM |
4188 | return TRUE; |
4189 | ||
bb700d78 AM |
4190 | data.info = info; |
4191 | data.ok = TRUE; | |
4192 | elf_link_hash_traverse (&htab->elf, add_symbol_adjust, &data); | |
99877b66 AM |
4193 | |
4194 | /* We need to fix the undefs list for any syms we have twiddled to | |
4195 | undef_weak. */ | |
4196 | if (htab->twiddled_syms) | |
4197 | { | |
77cfaee6 | 4198 | bfd_link_repair_undef_list (&htab->elf.root); |
99877b66 AM |
4199 | htab->twiddled_syms = 0; |
4200 | } | |
bb700d78 | 4201 | return data.ok; |
8387904d AM |
4202 | } |
4203 | ||
411e1bfb | 4204 | static bfd_boolean |
4ce794b7 AM |
4205 | update_local_sym_info (bfd *abfd, Elf_Internal_Shdr *symtab_hdr, |
4206 | unsigned long r_symndx, bfd_vma r_addend, int tls_type) | |
411e1bfb AM |
4207 | { |
4208 | struct got_entry **local_got_ents = elf_local_got_ents (abfd); | |
e7b938ca | 4209 | char *local_got_tls_masks; |
411e1bfb AM |
4210 | |
4211 | if (local_got_ents == NULL) | |
4212 | { | |
4213 | bfd_size_type size = symtab_hdr->sh_info; | |
4214 | ||
e7b938ca | 4215 | size *= sizeof (*local_got_ents) + sizeof (*local_got_tls_masks); |
4ce794b7 | 4216 | local_got_ents = bfd_zalloc (abfd, size); |
411e1bfb AM |
4217 | if (local_got_ents == NULL) |
4218 | return FALSE; | |
4219 | elf_local_got_ents (abfd) = local_got_ents; | |
4220 | } | |
4221 | ||
4222 | if ((tls_type & TLS_EXPLICIT) == 0) | |
4223 | { | |
4224 | struct got_entry *ent; | |
4225 | ||
4226 | for (ent = local_got_ents[r_symndx]; ent != NULL; ent = ent->next) | |
e717da7e AM |
4227 | if (ent->addend == r_addend |
4228 | && ent->owner == abfd | |
4229 | && ent->tls_type == tls_type) | |
411e1bfb AM |
4230 | break; |
4231 | if (ent == NULL) | |
4232 | { | |
4233 | bfd_size_type amt = sizeof (*ent); | |
4ce794b7 | 4234 | ent = bfd_alloc (abfd, amt); |
411e1bfb AM |
4235 | if (ent == NULL) |
4236 | return FALSE; | |
4237 | ent->next = local_got_ents[r_symndx]; | |
4238 | ent->addend = r_addend; | |
e717da7e | 4239 | ent->owner = abfd; |
411e1bfb AM |
4240 | ent->tls_type = tls_type; |
4241 | ent->got.refcount = 0; | |
4242 | local_got_ents[r_symndx] = ent; | |
4243 | } | |
4244 | ent->got.refcount += 1; | |
4245 | } | |
4246 | ||
e7b938ca AM |
4247 | local_got_tls_masks = (char *) (local_got_ents + symtab_hdr->sh_info); |
4248 | local_got_tls_masks[r_symndx] |= tls_type; | |
411e1bfb | 4249 | return TRUE; |
65f38f15 AM |
4250 | } |
4251 | ||
411e1bfb | 4252 | static bfd_boolean |
4ce794b7 | 4253 | update_plt_info (bfd *abfd, struct ppc_link_hash_entry *eh, bfd_vma addend) |
1e2f5b6e | 4254 | { |
411e1bfb | 4255 | struct plt_entry *ent; |
1e2f5b6e | 4256 | |
411e1bfb AM |
4257 | for (ent = eh->elf.plt.plist; ent != NULL; ent = ent->next) |
4258 | if (ent->addend == addend) | |
4259 | break; | |
4260 | if (ent == NULL) | |
1e2f5b6e | 4261 | { |
411e1bfb | 4262 | bfd_size_type amt = sizeof (*ent); |
4ce794b7 | 4263 | ent = bfd_alloc (abfd, amt); |
411e1bfb AM |
4264 | if (ent == NULL) |
4265 | return FALSE; | |
4266 | ent->next = eh->elf.plt.plist; | |
4267 | ent->addend = addend; | |
4268 | ent->plt.refcount = 0; | |
4269 | eh->elf.plt.plist = ent; | |
1e2f5b6e | 4270 | } |
411e1bfb | 4271 | ent->plt.refcount += 1; |
f5385ebf | 4272 | eh->elf.needs_plt = 1; |
93f3fa99 AM |
4273 | if (eh->elf.root.root.string[0] == '.' |
4274 | && eh->elf.root.root.string[1] != '\0') | |
4275 | eh->is_func = 1; | |
b34976b6 | 4276 | return TRUE; |
1e2f5b6e AM |
4277 | } |
4278 | ||
5bd4f169 | 4279 | /* Look through the relocs for a section during the first phase, and |
65f38f15 | 4280 | calculate needed space in the global offset table, procedure |
5d1634d7 | 4281 | linkage table, and dynamic reloc sections. */ |
5bd4f169 | 4282 | |
b34976b6 | 4283 | static bfd_boolean |
4ce794b7 AM |
4284 | ppc64_elf_check_relocs (bfd *abfd, struct bfd_link_info *info, |
4285 | asection *sec, const Elf_Internal_Rela *relocs) | |
5bd4f169 | 4286 | { |
65f38f15 | 4287 | struct ppc_link_hash_table *htab; |
5bd4f169 AM |
4288 | Elf_Internal_Shdr *symtab_hdr; |
4289 | struct elf_link_hash_entry **sym_hashes, **sym_hashes_end; | |
4290 | const Elf_Internal_Rela *rel; | |
4291 | const Elf_Internal_Rela *rel_end; | |
5bd4f169 | 4292 | asection *sreloc; |
1e2f5b6e | 4293 | asection **opd_sym_map; |
5bd4f169 | 4294 | |
1049f94e | 4295 | if (info->relocatable) |
b34976b6 | 4296 | return TRUE; |
5bd4f169 | 4297 | |
680a3378 AM |
4298 | /* Don't do anything special with non-loaded, non-alloced sections. |
4299 | In particular, any relocs in such sections should not affect GOT | |
4300 | and PLT reference counting (ie. we don't allow them to create GOT | |
4301 | or PLT entries), there's no possibility or desire to optimize TLS | |
4302 | relocs, and there's not much point in propagating relocs to shared | |
4303 | libs that the dynamic linker won't relocate. */ | |
4304 | if ((sec->flags & SEC_ALLOC) == 0) | |
4305 | return TRUE; | |
4306 | ||
65f38f15 | 4307 | htab = ppc_hash_table (info); |
5bd4f169 | 4308 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
5bd4f169 AM |
4309 | |
4310 | sym_hashes = elf_sym_hashes (abfd); | |
4311 | sym_hashes_end = (sym_hashes | |
1e2f5b6e AM |
4312 | + symtab_hdr->sh_size / sizeof (Elf64_External_Sym) |
4313 | - symtab_hdr->sh_info); | |
5bd4f169 AM |
4314 | |
4315 | sreloc = NULL; | |
1e2f5b6e AM |
4316 | opd_sym_map = NULL; |
4317 | if (strcmp (bfd_get_section_name (abfd, sec), ".opd") == 0) | |
4318 | { | |
4319 | /* Garbage collection needs some extra help with .opd sections. | |
4320 | We don't want to necessarily keep everything referenced by | |
4321 | relocs in .opd, as that would keep all functions. Instead, | |
4322 | if we reference an .opd symbol (a function descriptor), we | |
4323 | want to keep the function code symbol's section. This is | |
4324 | easy for global symbols, but for local syms we need to keep | |
4325 | information about the associated function section. Later, if | |
4326 | edit_opd deletes entries, we'll use this array to adjust | |
4327 | local syms in .opd. */ | |
4328 | union opd_info { | |
4329 | asection *func_section; | |
4330 | long entry_adjust; | |
4331 | }; | |
4332 | bfd_size_type amt; | |
4333 | ||
3f764659 | 4334 | amt = sec->size * sizeof (union opd_info) / 8; |
4ce794b7 | 4335 | opd_sym_map = bfd_zalloc (abfd, amt); |
1e2f5b6e | 4336 | if (opd_sym_map == NULL) |
b34976b6 | 4337 | return FALSE; |
f0abc2a1 | 4338 | ppc64_elf_section_data (sec)->opd.func_sec = opd_sym_map; |
1e2f5b6e | 4339 | } |
5bd4f169 | 4340 | |
82bd7b59 AM |
4341 | if (htab->sfpr == NULL |
4342 | && !create_linkage_sections (htab->elf.dynobj, info)) | |
b34976b6 | 4343 | return FALSE; |
82bd7b59 | 4344 | |
5bd4f169 AM |
4345 | rel_end = relocs + sec->reloc_count; |
4346 | for (rel = relocs; rel < rel_end; rel++) | |
4347 | { | |
4348 | unsigned long r_symndx; | |
4349 | struct elf_link_hash_entry *h; | |
04c9666a | 4350 | enum elf_ppc64_reloc_type r_type; |
411e1bfb | 4351 | int tls_type = 0; |
5bd4f169 AM |
4352 | |
4353 | r_symndx = ELF64_R_SYM (rel->r_info); | |
4354 | if (r_symndx < symtab_hdr->sh_info) | |
4355 | h = NULL; | |
4356 | else | |
973a3492 L |
4357 | { |
4358 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
4359 | while (h->root.type == bfd_link_hash_indirect | |
4360 | || h->root.type == bfd_link_hash_warning) | |
4361 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
4362 | } | |
5bd4f169 | 4363 | |
4ce794b7 | 4364 | r_type = ELF64_R_TYPE (rel->r_info); |
a33d1f77 | 4365 | switch (r_type) |
5bd4f169 | 4366 | { |
411e1bfb AM |
4367 | case R_PPC64_GOT_TLSLD16: |
4368 | case R_PPC64_GOT_TLSLD16_LO: | |
4369 | case R_PPC64_GOT_TLSLD16_HI: | |
4370 | case R_PPC64_GOT_TLSLD16_HA: | |
e717da7e | 4371 | ppc64_tlsld_got (abfd)->refcount += 1; |
951fd09b | 4372 | tls_type = TLS_TLS | TLS_LD; |
411e1bfb AM |
4373 | goto dogottls; |
4374 | ||
4375 | case R_PPC64_GOT_TLSGD16: | |
4376 | case R_PPC64_GOT_TLSGD16_LO: | |
4377 | case R_PPC64_GOT_TLSGD16_HI: | |
4378 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b | 4379 | tls_type = TLS_TLS | TLS_GD; |
411e1bfb AM |
4380 | goto dogottls; |
4381 | ||
4382 | case R_PPC64_GOT_TPREL16_DS: | |
4383 | case R_PPC64_GOT_TPREL16_LO_DS: | |
4384 | case R_PPC64_GOT_TPREL16_HI: | |
4385 | case R_PPC64_GOT_TPREL16_HA: | |
4386 | if (info->shared) | |
4387 | info->flags |= DF_STATIC_TLS; | |
4388 | tls_type = TLS_TLS | TLS_TPREL; | |
4389 | goto dogottls; | |
4390 | ||
4391 | case R_PPC64_GOT_DTPREL16_DS: | |
4392 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
4393 | case R_PPC64_GOT_DTPREL16_HI: | |
4394 | case R_PPC64_GOT_DTPREL16_HA: | |
4395 | tls_type = TLS_TLS | TLS_DTPREL; | |
4396 | dogottls: | |
4397 | sec->has_tls_reloc = 1; | |
4398 | /* Fall thru */ | |
4399 | ||
5bd4f169 | 4400 | case R_PPC64_GOT16: |
5bd4f169 | 4401 | case R_PPC64_GOT16_DS: |
65f38f15 AM |
4402 | case R_PPC64_GOT16_HA: |
4403 | case R_PPC64_GOT16_HI: | |
4404 | case R_PPC64_GOT16_LO: | |
5bd4f169 | 4405 | case R_PPC64_GOT16_LO_DS: |
65f38f15 | 4406 | /* This symbol requires a global offset table entry. */ |
4c52953f | 4407 | sec->has_toc_reloc = 1; |
e717da7e AM |
4408 | if (ppc64_elf_tdata (abfd)->got == NULL |
4409 | && !create_got_section (abfd, info)) | |
b34976b6 | 4410 | return FALSE; |
5bd4f169 AM |
4411 | |
4412 | if (h != NULL) | |
4413 | { | |
411e1bfb AM |
4414 | struct ppc_link_hash_entry *eh; |
4415 | struct got_entry *ent; | |
65f38f15 | 4416 | |
411e1bfb AM |
4417 | eh = (struct ppc_link_hash_entry *) h; |
4418 | for (ent = eh->elf.got.glist; ent != NULL; ent = ent->next) | |
4419 | if (ent->addend == rel->r_addend | |
e717da7e | 4420 | && ent->owner == abfd |
411e1bfb AM |
4421 | && ent->tls_type == tls_type) |
4422 | break; | |
4423 | if (ent == NULL) | |
5bd4f169 | 4424 | { |
411e1bfb | 4425 | bfd_size_type amt = sizeof (*ent); |
4ce794b7 | 4426 | ent = bfd_alloc (abfd, amt); |
411e1bfb | 4427 | if (ent == NULL) |
b34976b6 | 4428 | return FALSE; |
411e1bfb AM |
4429 | ent->next = eh->elf.got.glist; |
4430 | ent->addend = rel->r_addend; | |
e717da7e | 4431 | ent->owner = abfd; |
411e1bfb AM |
4432 | ent->tls_type = tls_type; |
4433 | ent->got.refcount = 0; | |
4434 | eh->elf.got.glist = ent; | |
5bd4f169 | 4435 | } |
411e1bfb | 4436 | ent->got.refcount += 1; |
e7b938ca | 4437 | eh->tls_mask |= tls_type; |
5bd4f169 | 4438 | } |
411e1bfb AM |
4439 | else |
4440 | /* This is a global offset table entry for a local symbol. */ | |
4441 | if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
4442 | rel->r_addend, tls_type)) | |
4443 | return FALSE; | |
5bd4f169 AM |
4444 | break; |
4445 | ||
5bd4f169 | 4446 | case R_PPC64_PLT16_HA: |
65f38f15 AM |
4447 | case R_PPC64_PLT16_HI: |
4448 | case R_PPC64_PLT16_LO: | |
4449 | case R_PPC64_PLT32: | |
4450 | case R_PPC64_PLT64: | |
5bd4f169 | 4451 | /* This symbol requires a procedure linkage table entry. We |
3fad3c7c AM |
4452 | actually build the entry in adjust_dynamic_symbol, |
4453 | because this might be a case of linking PIC code without | |
4454 | linking in any dynamic objects, in which case we don't | |
4455 | need to generate a procedure linkage table after all. */ | |
5bd4f169 AM |
4456 | if (h == NULL) |
4457 | { | |
4458 | /* It does not make sense to have a procedure linkage | |
3fad3c7c | 4459 | table entry for a local symbol. */ |
5bd4f169 | 4460 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 4461 | return FALSE; |
5bd4f169 | 4462 | } |
411e1bfb AM |
4463 | else |
4464 | if (!update_plt_info (abfd, (struct ppc_link_hash_entry *) h, | |
4465 | rel->r_addend)) | |
4466 | return FALSE; | |
5bd4f169 AM |
4467 | break; |
4468 | ||
4469 | /* The following relocations don't need to propagate the | |
4470 | relocation if linking a shared object since they are | |
4471 | section relative. */ | |
4472 | case R_PPC64_SECTOFF: | |
4473 | case R_PPC64_SECTOFF_LO: | |
4474 | case R_PPC64_SECTOFF_HI: | |
4475 | case R_PPC64_SECTOFF_HA: | |
4476 | case R_PPC64_SECTOFF_DS: | |
4477 | case R_PPC64_SECTOFF_LO_DS: | |
411e1bfb AM |
4478 | case R_PPC64_DTPREL16: |
4479 | case R_PPC64_DTPREL16_LO: | |
4480 | case R_PPC64_DTPREL16_HI: | |
4481 | case R_PPC64_DTPREL16_HA: | |
4482 | case R_PPC64_DTPREL16_DS: | |
4483 | case R_PPC64_DTPREL16_LO_DS: | |
4484 | case R_PPC64_DTPREL16_HIGHER: | |
4485 | case R_PPC64_DTPREL16_HIGHERA: | |
4486 | case R_PPC64_DTPREL16_HIGHEST: | |
4487 | case R_PPC64_DTPREL16_HIGHESTA: | |
5bd4f169 AM |
4488 | break; |
4489 | ||
ad8e1ba5 AM |
4490 | /* Nor do these. */ |
4491 | case R_PPC64_TOC16: | |
4492 | case R_PPC64_TOC16_LO: | |
4493 | case R_PPC64_TOC16_HI: | |
4494 | case R_PPC64_TOC16_HA: | |
4495 | case R_PPC64_TOC16_DS: | |
4496 | case R_PPC64_TOC16_LO_DS: | |
4c52953f | 4497 | sec->has_toc_reloc = 1; |
ad8e1ba5 AM |
4498 | break; |
4499 | ||
5bd4f169 AM |
4500 | /* This relocation describes the C++ object vtable hierarchy. |
4501 | Reconstruct it for later use during GC. */ | |
4502 | case R_PPC64_GNU_VTINHERIT: | |
c152c796 | 4503 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
b34976b6 | 4504 | return FALSE; |
5bd4f169 AM |
4505 | break; |
4506 | ||
4507 | /* This relocation describes which C++ vtable entries are actually | |
4508 | used. Record for later use during GC. */ | |
4509 | case R_PPC64_GNU_VTENTRY: | |
c152c796 | 4510 | if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) |
b34976b6 | 4511 | return FALSE; |
5bd4f169 AM |
4512 | break; |
4513 | ||
721956f4 AM |
4514 | case R_PPC64_REL14: |
4515 | case R_PPC64_REL14_BRTAKEN: | |
4516 | case R_PPC64_REL14_BRNTAKEN: | |
220c76dd AM |
4517 | { |
4518 | asection *dest = NULL; | |
4519 | ||
4520 | /* Heuristic: If jumping outside our section, chances are | |
4521 | we are going to need a stub. */ | |
4522 | if (h != NULL) | |
4523 | { | |
4524 | /* If the sym is weak it may be overridden later, so | |
4525 | don't assume we know where a weak sym lives. */ | |
4526 | if (h->root.type == bfd_link_hash_defined) | |
4527 | dest = h->root.u.def.section; | |
4528 | } | |
4529 | else | |
4530 | dest = bfd_section_from_r_symndx (abfd, &htab->sym_sec, | |
4531 | sec, r_symndx); | |
4532 | if (dest != sec) | |
4533 | htab->has_14bit_branch = 1; | |
4534 | } | |
721956f4 AM |
4535 | /* Fall through. */ |
4536 | ||
5d1634d7 | 4537 | case R_PPC64_REL24: |
8387904d | 4538 | if (h != NULL) |
5d1634d7 AM |
4539 | { |
4540 | /* We may need a .plt entry if the function this reloc | |
4541 | refers to is in a shared lib. */ | |
411e1bfb AM |
4542 | if (!update_plt_info (abfd, (struct ppc_link_hash_entry *) h, |
4543 | rel->r_addend)) | |
4544 | return FALSE; | |
8387904d AM |
4545 | if (h == &htab->tls_get_addr->elf |
4546 | || h == &htab->tls_get_addr_fd->elf) | |
411e1bfb | 4547 | sec->has_tls_reloc = 1; |
8387904d AM |
4548 | else if (htab->tls_get_addr == NULL |
4549 | && !strncmp (h->root.root.string, ".__tls_get_addr", 15) | |
a48ebf4d AM |
4550 | && (h->root.root.string[15] == 0 |
4551 | || h->root.root.string[15] == '@')) | |
411e1bfb | 4552 | { |
8387904d AM |
4553 | htab->tls_get_addr = (struct ppc_link_hash_entry *) h; |
4554 | sec->has_tls_reloc = 1; | |
4555 | } | |
4556 | else if (htab->tls_get_addr_fd == NULL | |
4557 | && !strncmp (h->root.root.string, "__tls_get_addr", 14) | |
4558 | && (h->root.root.string[14] == 0 | |
4559 | || h->root.root.string[14] == '@')) | |
4560 | { | |
4561 | htab->tls_get_addr_fd = (struct ppc_link_hash_entry *) h; | |
411e1bfb AM |
4562 | sec->has_tls_reloc = 1; |
4563 | } | |
4564 | } | |
4565 | break; | |
4566 | ||
4567 | case R_PPC64_TPREL64: | |
4568 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_TPREL; | |
4569 | if (info->shared) | |
4570 | info->flags |= DF_STATIC_TLS; | |
4571 | goto dotlstoc; | |
4572 | ||
4573 | case R_PPC64_DTPMOD64: | |
4574 | if (rel + 1 < rel_end | |
4575 | && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64) | |
4576 | && rel[1].r_offset == rel->r_offset + 8) | |
951fd09b | 4577 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_GD; |
411e1bfb | 4578 | else |
951fd09b | 4579 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_LD; |
411e1bfb AM |
4580 | goto dotlstoc; |
4581 | ||
4582 | case R_PPC64_DTPREL64: | |
4583 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_DTPREL; | |
4584 | if (rel != relocs | |
4585 | && rel[-1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPMOD64) | |
4586 | && rel[-1].r_offset == rel->r_offset - 8) | |
4587 | /* This is the second reloc of a dtpmod, dtprel pair. | |
4588 | Don't mark with TLS_DTPREL. */ | |
4589 | goto dodyn; | |
4590 | ||
4591 | dotlstoc: | |
4592 | sec->has_tls_reloc = 1; | |
4593 | if (h != NULL) | |
4594 | { | |
4595 | struct ppc_link_hash_entry *eh; | |
4596 | eh = (struct ppc_link_hash_entry *) h; | |
e7b938ca | 4597 | eh->tls_mask |= tls_type; |
411e1bfb AM |
4598 | } |
4599 | else | |
4600 | if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
4601 | rel->r_addend, tls_type)) | |
4602 | return FALSE; | |
4603 | ||
4604 | if (ppc64_elf_section_data (sec)->t_symndx == NULL) | |
4605 | { | |
e7b938ca | 4606 | /* One extra to simplify get_tls_mask. */ |
eea6121a | 4607 | bfd_size_type amt = sec->size * sizeof (unsigned) / 8 + 1; |
4ce794b7 | 4608 | ppc64_elf_section_data (sec)->t_symndx = bfd_zalloc (abfd, amt); |
411e1bfb AM |
4609 | if (ppc64_elf_section_data (sec)->t_symndx == NULL) |
4610 | return FALSE; | |
4611 | } | |
4612 | BFD_ASSERT (rel->r_offset % 8 == 0); | |
4613 | ppc64_elf_section_data (sec)->t_symndx[rel->r_offset / 8] = r_symndx; | |
951fd09b AM |
4614 | |
4615 | /* Mark the second slot of a GD or LD entry. | |
4616 | -1 to indicate GD and -2 to indicate LD. */ | |
4617 | if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_GD)) | |
4618 | ppc64_elf_section_data (sec)->t_symndx[rel->r_offset / 8 + 1] = -1; | |
4619 | else if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_LD)) | |
4620 | ppc64_elf_section_data (sec)->t_symndx[rel->r_offset / 8 + 1] = -2; | |
411e1bfb AM |
4621 | goto dodyn; |
4622 | ||
4623 | case R_PPC64_TPREL16: | |
4624 | case R_PPC64_TPREL16_LO: | |
4625 | case R_PPC64_TPREL16_HI: | |
4626 | case R_PPC64_TPREL16_HA: | |
4627 | case R_PPC64_TPREL16_DS: | |
4628 | case R_PPC64_TPREL16_LO_DS: | |
4629 | case R_PPC64_TPREL16_HIGHER: | |
4630 | case R_PPC64_TPREL16_HIGHERA: | |
4631 | case R_PPC64_TPREL16_HIGHEST: | |
4632 | case R_PPC64_TPREL16_HIGHESTA: | |
4633 | if (info->shared) | |
4634 | { | |
4635 | info->flags |= DF_STATIC_TLS; | |
4636 | goto dodyn; | |
5d1634d7 AM |
4637 | } |
4638 | break; | |
4639 | ||
e86ce104 | 4640 | case R_PPC64_ADDR64: |
1e2f5b6e | 4641 | if (opd_sym_map != NULL |
1e2f5b6e | 4642 | && rel + 1 < rel_end |
4ce794b7 | 4643 | && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC) |
1e2f5b6e | 4644 | { |
8387904d AM |
4645 | if (h != NULL) |
4646 | { | |
4647 | if (h->root.root.string[0] == '.' | |
4648 | && h->root.root.string[1] != 0 | |
4649 | && get_fdh ((struct ppc_link_hash_entry *) h, htab)) | |
4650 | ; | |
4651 | else | |
4652 | ((struct ppc_link_hash_entry *) h)->is_func = 1; | |
4653 | } | |
4654 | else | |
4655 | { | |
4656 | asection *s; | |
1e2f5b6e | 4657 | |
8387904d AM |
4658 | s = bfd_section_from_r_symndx (abfd, &htab->sym_sec, sec, |
4659 | r_symndx); | |
4660 | if (s == NULL) | |
4661 | return FALSE; | |
4662 | else if (s != sec) | |
3f764659 | 4663 | opd_sym_map[rel->r_offset / 8] = s; |
8387904d | 4664 | } |
1e2f5b6e | 4665 | } |
e86ce104 AM |
4666 | /* Fall through. */ |
4667 | ||
04c9666a | 4668 | case R_PPC64_REL30: |
5bd4f169 | 4669 | case R_PPC64_REL32: |
04c9666a | 4670 | case R_PPC64_REL64: |
65f38f15 AM |
4671 | case R_PPC64_ADDR14: |
4672 | case R_PPC64_ADDR14_BRNTAKEN: | |
4673 | case R_PPC64_ADDR14_BRTAKEN: | |
4674 | case R_PPC64_ADDR16: | |
4675 | case R_PPC64_ADDR16_DS: | |
4676 | case R_PPC64_ADDR16_HA: | |
4677 | case R_PPC64_ADDR16_HI: | |
4678 | case R_PPC64_ADDR16_HIGHER: | |
4679 | case R_PPC64_ADDR16_HIGHERA: | |
4680 | case R_PPC64_ADDR16_HIGHEST: | |
4681 | case R_PPC64_ADDR16_HIGHESTA: | |
4682 | case R_PPC64_ADDR16_LO: | |
4683 | case R_PPC64_ADDR16_LO_DS: | |
4684 | case R_PPC64_ADDR24: | |
65f38f15 | 4685 | case R_PPC64_ADDR32: |
65f38f15 AM |
4686 | case R_PPC64_UADDR16: |
4687 | case R_PPC64_UADDR32: | |
4688 | case R_PPC64_UADDR64: | |
5bd4f169 | 4689 | case R_PPC64_TOC: |
81848ca0 AM |
4690 | if (h != NULL && !info->shared) |
4691 | /* We may need a copy reloc. */ | |
f5385ebf | 4692 | h->non_got_ref = 1; |
81848ca0 | 4693 | |
41bd81ab | 4694 | /* Don't propagate .opd relocs. */ |
1e2f5b6e | 4695 | if (NO_OPD_RELOCS && opd_sym_map != NULL) |
e86ce104 | 4696 | break; |
e86ce104 | 4697 | |
65f38f15 AM |
4698 | /* If we are creating a shared library, and this is a reloc |
4699 | against a global symbol, or a non PC relative reloc | |
4700 | against a local symbol, then we need to copy the reloc | |
4701 | into the shared library. However, if we are linking with | |
4702 | -Bsymbolic, we do not need to copy a reloc against a | |
4703 | global symbol which is defined in an object we are | |
4704 | including in the link (i.e., DEF_REGULAR is set). At | |
4705 | this point we have not seen all the input files, so it is | |
4706 | possible that DEF_REGULAR is not set now but will be set | |
4707 | later (it is never cleared). In case of a weak definition, | |
4708 | DEF_REGULAR may be cleared later by a strong definition in | |
4709 | a shared library. We account for that possibility below by | |
f4656909 | 4710 | storing information in the dyn_relocs field of the hash |
65f38f15 AM |
4711 | table entry. A similar situation occurs when creating |
4712 | shared libraries and symbol visibility changes render the | |
4713 | symbol local. | |
4714 | ||
4715 | If on the other hand, we are creating an executable, we | |
4716 | may need to keep relocations for symbols satisfied by a | |
4717 | dynamic library if we manage to avoid copy relocs for the | |
4718 | symbol. */ | |
411e1bfb | 4719 | dodyn: |
65f38f15 | 4720 | if ((info->shared |
411e1bfb | 4721 | && (MUST_BE_DYN_RELOC (r_type) |
65f38f15 AM |
4722 | || (h != NULL |
4723 | && (! info->symbolic | |
4724 | || h->root.type == bfd_link_hash_defweak | |
f5385ebf | 4725 | || !h->def_regular)))) |
f4656909 AM |
4726 | || (ELIMINATE_COPY_RELOCS |
4727 | && !info->shared | |
65f38f15 AM |
4728 | && h != NULL |
4729 | && (h->root.type == bfd_link_hash_defweak | |
f5385ebf | 4730 | || !h->def_regular))) |
5bd4f169 | 4731 | { |
ec338859 AM |
4732 | struct ppc_dyn_relocs *p; |
4733 | struct ppc_dyn_relocs **head; | |
4734 | ||
65f38f15 AM |
4735 | /* We must copy these reloc types into the output file. |
4736 | Create a reloc section in dynobj and make room for | |
4737 | this reloc. */ | |
5bd4f169 AM |
4738 | if (sreloc == NULL) |
4739 | { | |
4740 | const char *name; | |
65f38f15 | 4741 | bfd *dynobj; |
5bd4f169 AM |
4742 | |
4743 | name = (bfd_elf_string_from_elf_section | |
4744 | (abfd, | |
4745 | elf_elfheader (abfd)->e_shstrndx, | |
4746 | elf_section_data (sec)->rel_hdr.sh_name)); | |
4747 | if (name == NULL) | |
b34976b6 | 4748 | return FALSE; |
5bd4f169 | 4749 | |
65f38f15 AM |
4750 | if (strncmp (name, ".rela", 5) != 0 |
4751 | || strcmp (bfd_get_section_name (abfd, sec), | |
4752 | name + 5) != 0) | |
4753 | { | |
4754 | (*_bfd_error_handler) | |
d003868e AM |
4755 | (_("%B: bad relocation section name `%s\'"), |
4756 | abfd, name); | |
5d1634d7 | 4757 | bfd_set_error (bfd_error_bad_value); |
65f38f15 AM |
4758 | } |
4759 | ||
65f38f15 | 4760 | dynobj = htab->elf.dynobj; |
5bd4f169 AM |
4761 | sreloc = bfd_get_section_by_name (dynobj, name); |
4762 | if (sreloc == NULL) | |
4763 | { | |
4764 | flagword flags; | |
4765 | ||
5bd4f169 | 4766 | flags = (SEC_HAS_CONTENTS | SEC_READONLY |
77623a34 AM |
4767 | | SEC_IN_MEMORY | SEC_LINKER_CREATED |
4768 | | SEC_ALLOC | SEC_LOAD); | |
3496cb2a L |
4769 | sreloc = bfd_make_section_with_flags (dynobj, |
4770 | name, | |
4771 | flags); | |
5bd4f169 | 4772 | if (sreloc == NULL |
65f38f15 | 4773 | || ! bfd_set_section_alignment (dynobj, sreloc, 3)) |
b34976b6 | 4774 | return FALSE; |
5bd4f169 | 4775 | } |
65f38f15 | 4776 | elf_section_data (sec)->sreloc = sreloc; |
5bd4f169 AM |
4777 | } |
4778 | ||
65f38f15 AM |
4779 | /* If this is a global symbol, we count the number of |
4780 | relocations we need for this symbol. */ | |
4781 | if (h != NULL) | |
4782 | { | |
ec338859 | 4783 | head = &((struct ppc_link_hash_entry *) h)->dyn_relocs; |
65f38f15 AM |
4784 | } |
4785 | else | |
4786 | { | |
ec338859 AM |
4787 | /* Track dynamic relocs needed for local syms too. |
4788 | We really need local syms available to do this | |
4789 | easily. Oh well. */ | |
4790 | ||
4791 | asection *s; | |
6edfbbad DJ |
4792 | void *vpp; |
4793 | ||
ec338859 AM |
4794 | s = bfd_section_from_r_symndx (abfd, &htab->sym_sec, |
4795 | sec, r_symndx); | |
4796 | if (s == NULL) | |
b34976b6 | 4797 | return FALSE; |
ec338859 | 4798 | |
6edfbbad DJ |
4799 | vpp = &elf_section_data (s)->local_dynrel; |
4800 | head = (struct ppc_dyn_relocs **) vpp; | |
65f38f15 | 4801 | } |
ec338859 AM |
4802 | |
4803 | p = *head; | |
4804 | if (p == NULL || p->sec != sec) | |
4805 | { | |
4ce794b7 | 4806 | p = bfd_alloc (htab->elf.dynobj, sizeof *p); |
ec338859 | 4807 | if (p == NULL) |
b34976b6 | 4808 | return FALSE; |
ec338859 AM |
4809 | p->next = *head; |
4810 | *head = p; | |
4811 | p->sec = sec; | |
4812 | p->count = 0; | |
4813 | p->pc_count = 0; | |
4814 | } | |
4815 | ||
4816 | p->count += 1; | |
411e1bfb | 4817 | if (!MUST_BE_DYN_RELOC (r_type)) |
ec338859 | 4818 | p->pc_count += 1; |
65f38f15 | 4819 | } |
5bd4f169 | 4820 | break; |
65f38f15 AM |
4821 | |
4822 | default: | |
96e0dda4 | 4823 | break; |
5bd4f169 AM |
4824 | } |
4825 | } | |
4826 | ||
b34976b6 | 4827 | return TRUE; |
5bd4f169 AM |
4828 | } |
4829 | ||
8387904d AM |
4830 | /* OFFSET in OPD_SEC specifies a function descriptor. Return the address |
4831 | of the code entry point, and its section. */ | |
4832 | ||
4833 | static bfd_vma | |
4834 | opd_entry_value (asection *opd_sec, | |
4835 | bfd_vma offset, | |
4836 | asection **code_sec, | |
4837 | bfd_vma *code_off) | |
4838 | { | |
4839 | bfd *opd_bfd = opd_sec->owner; | |
8860955f | 4840 | Elf_Internal_Rela *relocs; |
8387904d | 4841 | Elf_Internal_Rela *lo, *hi, *look; |
645ea6a9 | 4842 | bfd_vma val; |
8387904d | 4843 | |
4b85d634 AM |
4844 | /* No relocs implies we are linking a --just-symbols object. */ |
4845 | if (opd_sec->reloc_count == 0) | |
4846 | { | |
4847 | bfd_vma val; | |
4848 | ||
4849 | if (!bfd_get_section_contents (opd_bfd, opd_sec, &val, offset, 8)) | |
4850 | return (bfd_vma) -1; | |
3b36f7e6 | 4851 | |
4b85d634 AM |
4852 | if (code_sec != NULL) |
4853 | { | |
4854 | asection *sec, *likely = NULL; | |
4855 | for (sec = opd_bfd->sections; sec != NULL; sec = sec->next) | |
4856 | if (sec->vma <= val | |
4857 | && (sec->flags & SEC_LOAD) != 0 | |
4858 | && (sec->flags & SEC_ALLOC) != 0) | |
4859 | likely = sec; | |
4860 | if (likely != NULL) | |
4861 | { | |
4862 | *code_sec = likely; | |
4863 | if (code_off != NULL) | |
4864 | *code_off = val - likely->vma; | |
4865 | } | |
4866 | } | |
4867 | return val; | |
4868 | } | |
4869 | ||
8860955f AM |
4870 | relocs = ppc64_elf_tdata (opd_bfd)->opd_relocs; |
4871 | if (relocs == NULL) | |
4872 | relocs = _bfd_elf_link_read_relocs (opd_bfd, opd_sec, NULL, NULL, TRUE); | |
645ea6a9 | 4873 | |
8387904d | 4874 | /* Go find the opd reloc at the sym address. */ |
8860955f | 4875 | lo = relocs; |
8387904d AM |
4876 | BFD_ASSERT (lo != NULL); |
4877 | hi = lo + opd_sec->reloc_count - 1; /* ignore last reloc */ | |
645ea6a9 | 4878 | val = (bfd_vma) -1; |
8387904d AM |
4879 | while (lo < hi) |
4880 | { | |
4881 | look = lo + (hi - lo) / 2; | |
4882 | if (look->r_offset < offset) | |
4883 | lo = look + 1; | |
4884 | else if (look->r_offset > offset) | |
4885 | hi = look; | |
4886 | else | |
4887 | { | |
4888 | Elf_Internal_Shdr *symtab_hdr = &elf_tdata (opd_bfd)->symtab_hdr; | |
4889 | if (ELF64_R_TYPE (look->r_info) == R_PPC64_ADDR64 | |
4890 | && ELF64_R_TYPE ((look + 1)->r_info) == R_PPC64_TOC) | |
4891 | { | |
4892 | unsigned long symndx = ELF64_R_SYM (look->r_info); | |
8387904d AM |
4893 | asection *sec; |
4894 | ||
4895 | if (symndx < symtab_hdr->sh_info) | |
4896 | { | |
4897 | Elf_Internal_Sym *sym; | |
4898 | ||
4899 | sym = (Elf_Internal_Sym *) symtab_hdr->contents; | |
4900 | if (sym == NULL) | |
4901 | { | |
4902 | sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr, | |
4903 | symtab_hdr->sh_info, | |
4904 | 0, NULL, NULL, NULL); | |
4905 | if (sym == NULL) | |
645ea6a9 | 4906 | break; |
8387904d AM |
4907 | symtab_hdr->contents = (bfd_byte *) sym; |
4908 | } | |
4909 | ||
4910 | sym += symndx; | |
4911 | val = sym->st_value; | |
4912 | sec = NULL; | |
4913 | if ((sym->st_shndx != SHN_UNDEF | |
4914 | && sym->st_shndx < SHN_LORESERVE) | |
4915 | || sym->st_shndx > SHN_HIRESERVE) | |
4916 | sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx); | |
4917 | BFD_ASSERT ((sec->flags & SEC_MERGE) == 0); | |
4918 | } | |
4919 | else | |
4920 | { | |
4921 | struct elf_link_hash_entry **sym_hashes; | |
4922 | struct elf_link_hash_entry *rh; | |
4923 | ||
4924 | sym_hashes = elf_sym_hashes (opd_bfd); | |
4925 | rh = sym_hashes[symndx - symtab_hdr->sh_info]; | |
4926 | while (rh->root.type == bfd_link_hash_indirect | |
4927 | || rh->root.type == bfd_link_hash_warning) | |
4928 | rh = ((struct elf_link_hash_entry *) rh->root.u.i.link); | |
4929 | BFD_ASSERT (rh->root.type == bfd_link_hash_defined | |
4930 | || rh->root.type == bfd_link_hash_defweak); | |
4931 | val = rh->root.u.def.value; | |
4932 | sec = rh->root.u.def.section; | |
4933 | } | |
4934 | val += look->r_addend; | |
4935 | if (code_off != NULL) | |
4936 | *code_off = val; | |
4937 | if (code_sec != NULL) | |
4938 | *code_sec = sec; | |
4939 | if (sec != NULL && sec->output_section != NULL) | |
4940 | val += sec->output_section->vma + sec->output_offset; | |
8387904d AM |
4941 | } |
4942 | break; | |
4943 | } | |
4944 | } | |
645ea6a9 | 4945 | |
645ea6a9 | 4946 | return val; |
8387904d AM |
4947 | } |
4948 | ||
64d03ab5 AM |
4949 | /* Mark sections containing dynamically referenced symbols. When |
4950 | building shared libraries, we must assume that any visible symbol is | |
4951 | referenced. */ | |
4952 | ||
4953 | static bfd_boolean | |
4954 | ppc64_elf_gc_mark_dynamic_ref (struct elf_link_hash_entry *h, void *inf) | |
4955 | { | |
4956 | struct bfd_link_info *info = (struct bfd_link_info *) inf; | |
4957 | struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h; | |
4958 | ||
4959 | if (eh->elf.root.type == bfd_link_hash_warning) | |
4960 | eh = (struct ppc_link_hash_entry *) eh->elf.root.u.i.link; | |
4961 | ||
4962 | /* Dynamic linking info is on the func descriptor sym. */ | |
4963 | if (eh->oh != NULL | |
4964 | && eh->oh->is_func_descriptor | |
4965 | && (eh->oh->elf.root.type == bfd_link_hash_defined | |
4966 | || eh->oh->elf.root.type == bfd_link_hash_defweak)) | |
4967 | eh = eh->oh; | |
4968 | ||
4969 | if ((eh->elf.root.type == bfd_link_hash_defined | |
4970 | || eh->elf.root.type == bfd_link_hash_defweak) | |
4971 | && (eh->elf.ref_dynamic | |
4972 | || (!info->executable | |
4973 | && eh->elf.def_regular | |
4974 | && ELF_ST_VISIBILITY (eh->elf.other) != STV_INTERNAL | |
4975 | && ELF_ST_VISIBILITY (eh->elf.other) != STV_HIDDEN))) | |
4976 | { | |
4977 | asection *code_sec; | |
4978 | ||
4979 | eh->elf.root.u.def.section->flags |= SEC_KEEP; | |
4980 | ||
4981 | /* Function descriptor syms cause the associated | |
4982 | function code sym section to be marked. */ | |
4983 | if (eh->is_func_descriptor | |
4984 | && (eh->oh->elf.root.type == bfd_link_hash_defined | |
4985 | || eh->oh->elf.root.type == bfd_link_hash_defweak)) | |
4986 | eh->oh->elf.root.u.def.section->flags |= SEC_KEEP; | |
4987 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL | |
4988 | && opd_entry_value (eh->elf.root.u.def.section, | |
4989 | eh->elf.root.u.def.value, | |
4990 | &code_sec, NULL) != (bfd_vma) -1) | |
4991 | code_sec->flags |= SEC_KEEP; | |
4992 | } | |
4993 | ||
4994 | return TRUE; | |
4995 | } | |
4996 | ||
5bd4f169 AM |
4997 | /* Return the section that should be marked against GC for a given |
4998 | relocation. */ | |
4999 | ||
5000 | static asection * | |
4ce794b7 | 5001 | ppc64_elf_gc_mark_hook (asection *sec, |
ccfa59ea | 5002 | struct bfd_link_info *info, |
4ce794b7 AM |
5003 | Elf_Internal_Rela *rel, |
5004 | struct elf_link_hash_entry *h, | |
5005 | Elf_Internal_Sym *sym) | |
5bd4f169 | 5006 | { |
ccfa59ea AM |
5007 | asection *rsec; |
5008 | ||
5009 | /* First mark all our entry sym sections. */ | |
5010 | if (info->gc_sym_list != NULL) | |
5011 | { | |
5012 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
5013 | struct bfd_sym_chain *sym = info->gc_sym_list; | |
5014 | ||
5015 | info->gc_sym_list = NULL; | |
b56cbdb9 | 5016 | for (; sym != NULL; sym = sym->next) |
ccfa59ea AM |
5017 | { |
5018 | struct ppc_link_hash_entry *eh; | |
5019 | ||
5020 | eh = (struct ppc_link_hash_entry *) | |
5021 | elf_link_hash_lookup (&htab->elf, sym->name, FALSE, FALSE, FALSE); | |
5022 | if (eh == NULL) | |
5023 | continue; | |
5024 | if (eh->elf.root.type != bfd_link_hash_defined | |
5025 | && eh->elf.root.type != bfd_link_hash_defweak) | |
5026 | continue; | |
5027 | ||
c4f68ce3 AM |
5028 | if (eh->is_func_descriptor |
5029 | && (eh->oh->elf.root.type == bfd_link_hash_defined | |
5030 | || eh->oh->elf.root.type == bfd_link_hash_defweak)) | |
ccfa59ea | 5031 | rsec = eh->oh->elf.root.u.def.section; |
8387904d AM |
5032 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL |
5033 | && opd_entry_value (eh->elf.root.u.def.section, | |
5034 | eh->elf.root.u.def.value, | |
5035 | &rsec, NULL) != (bfd_vma) -1) | |
5036 | ; | |
ccfa59ea AM |
5037 | else |
5038 | continue; | |
5039 | ||
5040 | if (!rsec->gc_mark) | |
5041 | _bfd_elf_gc_mark (info, rsec, ppc64_elf_gc_mark_hook); | |
5042 | ||
5043 | rsec = eh->elf.root.u.def.section; | |
5044 | if (!rsec->gc_mark) | |
5045 | _bfd_elf_gc_mark (info, rsec, ppc64_elf_gc_mark_hook); | |
ccfa59ea | 5046 | } |
ccfa59ea AM |
5047 | } |
5048 | ||
5049 | /* Syms return NULL if we're marking .opd, so we avoid marking all | |
5050 | function sections, as all functions are referenced in .opd. */ | |
5051 | rsec = NULL; | |
5052 | if (get_opd_info (sec) != NULL) | |
5053 | return rsec; | |
1e2f5b6e | 5054 | |
5bd4f169 AM |
5055 | if (h != NULL) |
5056 | { | |
04c9666a | 5057 | enum elf_ppc64_reloc_type r_type; |
ccfa59ea | 5058 | struct ppc_link_hash_entry *eh; |
a33d1f77 | 5059 | |
4ce794b7 | 5060 | r_type = ELF64_R_TYPE (rel->r_info); |
a33d1f77 | 5061 | switch (r_type) |
5bd4f169 AM |
5062 | { |
5063 | case R_PPC64_GNU_VTINHERIT: | |
5064 | case R_PPC64_GNU_VTENTRY: | |
5065 | break; | |
5066 | ||
5067 | default: | |
5068 | switch (h->root.type) | |
5069 | { | |
5070 | case bfd_link_hash_defined: | |
5071 | case bfd_link_hash_defweak: | |
ccfa59ea | 5072 | eh = (struct ppc_link_hash_entry *) h; |
c4f68ce3 AM |
5073 | if (eh->oh != NULL |
5074 | && eh->oh->is_func_descriptor | |
5075 | && (eh->oh->elf.root.type == bfd_link_hash_defined | |
5076 | || eh->oh->elf.root.type == bfd_link_hash_defweak)) | |
ccfa59ea | 5077 | eh = eh->oh; |
1e2f5b6e AM |
5078 | |
5079 | /* Function descriptor syms cause the associated | |
5080 | function code sym section to be marked. */ | |
c4f68ce3 AM |
5081 | if (eh->is_func_descriptor |
5082 | && (eh->oh->elf.root.type == bfd_link_hash_defined | |
5083 | || eh->oh->elf.root.type == bfd_link_hash_defweak)) | |
ccfa59ea AM |
5084 | { |
5085 | /* They also mark their opd section. */ | |
5086 | if (!eh->elf.root.u.def.section->gc_mark) | |
5087 | _bfd_elf_gc_mark (info, eh->elf.root.u.def.section, | |
5088 | ppc64_elf_gc_mark_hook); | |
5089 | ||
5090 | rsec = eh->oh->elf.root.u.def.section; | |
5091 | } | |
8387904d AM |
5092 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL |
5093 | && opd_entry_value (eh->elf.root.u.def.section, | |
5094 | eh->elf.root.u.def.value, | |
5095 | &rsec, NULL) != (bfd_vma) -1) | |
5096 | { | |
5097 | if (!eh->elf.root.u.def.section->gc_mark) | |
5098 | _bfd_elf_gc_mark (info, eh->elf.root.u.def.section, | |
5099 | ppc64_elf_gc_mark_hook); | |
5100 | } | |
ccfa59ea | 5101 | else |
1e2f5b6e AM |
5102 | rsec = h->root.u.def.section; |
5103 | break; | |
5bd4f169 AM |
5104 | |
5105 | case bfd_link_hash_common: | |
1e2f5b6e AM |
5106 | rsec = h->root.u.c.p->section; |
5107 | break; | |
5bd4f169 AM |
5108 | |
5109 | default: | |
5110 | break; | |
5111 | } | |
5112 | } | |
5113 | } | |
5114 | else | |
5115 | { | |
1e2f5b6e AM |
5116 | asection **opd_sym_section; |
5117 | ||
5118 | rsec = bfd_section_from_elf_index (sec->owner, sym->st_shndx); | |
ccfa59ea | 5119 | opd_sym_section = get_opd_info (rsec); |
1e2f5b6e | 5120 | if (opd_sym_section != NULL) |
ccfa59ea AM |
5121 | { |
5122 | if (!rsec->gc_mark) | |
5123 | _bfd_elf_gc_mark (info, rsec, ppc64_elf_gc_mark_hook); | |
5124 | ||
b4f4e59f | 5125 | rsec = opd_sym_section[(sym->st_value + rel->r_addend) / 8]; |
ccfa59ea | 5126 | } |
5bd4f169 AM |
5127 | } |
5128 | ||
1e2f5b6e | 5129 | return rsec; |
5bd4f169 AM |
5130 | } |
5131 | ||
65f38f15 AM |
5132 | /* Update the .got, .plt. and dynamic reloc reference counts for the |
5133 | section being removed. */ | |
5bd4f169 | 5134 | |
b34976b6 | 5135 | static bfd_boolean |
4ce794b7 AM |
5136 | ppc64_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info, |
5137 | asection *sec, const Elf_Internal_Rela *relocs) | |
5bd4f169 | 5138 | { |
411e1bfb | 5139 | struct ppc_link_hash_table *htab; |
5bd4f169 AM |
5140 | Elf_Internal_Shdr *symtab_hdr; |
5141 | struct elf_link_hash_entry **sym_hashes; | |
411e1bfb | 5142 | struct got_entry **local_got_ents; |
5bd4f169 | 5143 | const Elf_Internal_Rela *rel, *relend; |
5bd4f169 | 5144 | |
680a3378 AM |
5145 | if ((sec->flags & SEC_ALLOC) == 0) |
5146 | return TRUE; | |
5147 | ||
ec338859 AM |
5148 | elf_section_data (sec)->local_dynrel = NULL; |
5149 | ||
411e1bfb | 5150 | htab = ppc_hash_table (info); |
5bd4f169 AM |
5151 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
5152 | sym_hashes = elf_sym_hashes (abfd); | |
411e1bfb | 5153 | local_got_ents = elf_local_got_ents (abfd); |
5bd4f169 AM |
5154 | |
5155 | relend = relocs + sec->reloc_count; | |
5156 | for (rel = relocs; rel < relend; rel++) | |
a33d1f77 AM |
5157 | { |
5158 | unsigned long r_symndx; | |
04c9666a | 5159 | enum elf_ppc64_reloc_type r_type; |
58ac9f71 | 5160 | struct elf_link_hash_entry *h = NULL; |
411e1bfb | 5161 | char tls_type = 0; |
5bd4f169 | 5162 | |
a33d1f77 | 5163 | r_symndx = ELF64_R_SYM (rel->r_info); |
4ce794b7 | 5164 | r_type = ELF64_R_TYPE (rel->r_info); |
58ac9f71 AM |
5165 | if (r_symndx >= symtab_hdr->sh_info) |
5166 | { | |
5167 | struct ppc_link_hash_entry *eh; | |
5168 | struct ppc_dyn_relocs **pp; | |
5169 | struct ppc_dyn_relocs *p; | |
5170 | ||
5171 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
3eb128b2 AM |
5172 | while (h->root.type == bfd_link_hash_indirect |
5173 | || h->root.type == bfd_link_hash_warning) | |
5174 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
58ac9f71 AM |
5175 | eh = (struct ppc_link_hash_entry *) h; |
5176 | ||
5177 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next) | |
5178 | if (p->sec == sec) | |
5179 | { | |
5180 | /* Everything must go for SEC. */ | |
5181 | *pp = p->next; | |
5182 | break; | |
5183 | } | |
5184 | } | |
5185 | ||
a33d1f77 AM |
5186 | switch (r_type) |
5187 | { | |
411e1bfb AM |
5188 | case R_PPC64_GOT_TLSLD16: |
5189 | case R_PPC64_GOT_TLSLD16_LO: | |
5190 | case R_PPC64_GOT_TLSLD16_HI: | |
5191 | case R_PPC64_GOT_TLSLD16_HA: | |
e717da7e | 5192 | ppc64_tlsld_got (abfd)->refcount -= 1; |
951fd09b | 5193 | tls_type = TLS_TLS | TLS_LD; |
411e1bfb AM |
5194 | goto dogot; |
5195 | ||
5196 | case R_PPC64_GOT_TLSGD16: | |
5197 | case R_PPC64_GOT_TLSGD16_LO: | |
5198 | case R_PPC64_GOT_TLSGD16_HI: | |
5199 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b | 5200 | tls_type = TLS_TLS | TLS_GD; |
411e1bfb AM |
5201 | goto dogot; |
5202 | ||
5203 | case R_PPC64_GOT_TPREL16_DS: | |
5204 | case R_PPC64_GOT_TPREL16_LO_DS: | |
5205 | case R_PPC64_GOT_TPREL16_HI: | |
5206 | case R_PPC64_GOT_TPREL16_HA: | |
5207 | tls_type = TLS_TLS | TLS_TPREL; | |
5208 | goto dogot; | |
5209 | ||
5210 | case R_PPC64_GOT_DTPREL16_DS: | |
5211 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
5212 | case R_PPC64_GOT_DTPREL16_HI: | |
5213 | case R_PPC64_GOT_DTPREL16_HA: | |
5214 | tls_type = TLS_TLS | TLS_DTPREL; | |
5215 | goto dogot; | |
5216 | ||
a33d1f77 AM |
5217 | case R_PPC64_GOT16: |
5218 | case R_PPC64_GOT16_DS: | |
5219 | case R_PPC64_GOT16_HA: | |
5220 | case R_PPC64_GOT16_HI: | |
5221 | case R_PPC64_GOT16_LO: | |
5222 | case R_PPC64_GOT16_LO_DS: | |
411e1bfb AM |
5223 | dogot: |
5224 | { | |
5225 | struct got_entry *ent; | |
5226 | ||
58ac9f71 AM |
5227 | if (h != NULL) |
5228 | ent = h->got.glist; | |
411e1bfb AM |
5229 | else |
5230 | ent = local_got_ents[r_symndx]; | |
5231 | ||
5232 | for (; ent != NULL; ent = ent->next) | |
5233 | if (ent->addend == rel->r_addend | |
e717da7e | 5234 | && ent->owner == abfd |
411e1bfb AM |
5235 | && ent->tls_type == tls_type) |
5236 | break; | |
5237 | if (ent == NULL) | |
5238 | abort (); | |
5239 | if (ent->got.refcount > 0) | |
5240 | ent->got.refcount -= 1; | |
5241 | } | |
a33d1f77 | 5242 | break; |
65f38f15 | 5243 | |
a33d1f77 AM |
5244 | case R_PPC64_PLT16_HA: |
5245 | case R_PPC64_PLT16_HI: | |
5246 | case R_PPC64_PLT16_LO: | |
5247 | case R_PPC64_PLT32: | |
5248 | case R_PPC64_PLT64: | |
721956f4 AM |
5249 | case R_PPC64_REL14: |
5250 | case R_PPC64_REL14_BRNTAKEN: | |
5251 | case R_PPC64_REL14_BRTAKEN: | |
5d1634d7 | 5252 | case R_PPC64_REL24: |
58ac9f71 | 5253 | if (h != NULL) |
5d1634d7 | 5254 | { |
411e1bfb AM |
5255 | struct plt_entry *ent; |
5256 | ||
411e1bfb AM |
5257 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) |
5258 | if (ent->addend == rel->r_addend) | |
5259 | break; | |
5260 | if (ent == NULL) | |
5261 | abort (); | |
5262 | if (ent->plt.refcount > 0) | |
5263 | ent->plt.refcount -= 1; | |
5d1634d7 | 5264 | } |
e86ce104 | 5265 | break; |
5d1634d7 | 5266 | |
a33d1f77 AM |
5267 | default: |
5268 | break; | |
5269 | } | |
5270 | } | |
b34976b6 | 5271 | return TRUE; |
5bd4f169 AM |
5272 | } |
5273 | ||
deb0e272 AM |
5274 | /* The maximum size of .sfpr. */ |
5275 | #define SFPR_MAX (218*4) | |
5276 | ||
5277 | struct sfpr_def_parms | |
5278 | { | |
699733f6 AM |
5279 | const char name[12]; |
5280 | unsigned char lo, hi; | |
deb0e272 AM |
5281 | bfd_byte * (*write_ent) (bfd *, bfd_byte *, int); |
5282 | bfd_byte * (*write_tail) (bfd *, bfd_byte *, int); | |
5283 | }; | |
5284 | ||
5285 | /* Auto-generate _save*, _rest* functions in .sfpr. */ | |
5286 | ||
5287 | static unsigned int | |
5288 | sfpr_define (struct bfd_link_info *info, const struct sfpr_def_parms *parm) | |
5289 | { | |
5290 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
5291 | unsigned int i; | |
5292 | size_t len = strlen (parm->name); | |
5293 | bfd_boolean writing = FALSE; | |
699733f6 | 5294 | char sym[16]; |
deb0e272 AM |
5295 | |
5296 | memcpy (sym, parm->name, len); | |
5297 | sym[len + 2] = 0; | |
5298 | ||
5299 | for (i = parm->lo; i <= parm->hi; i++) | |
5300 | { | |
5301 | struct elf_link_hash_entry *h; | |
5302 | ||
5303 | sym[len + 0] = i / 10 + '0'; | |
5304 | sym[len + 1] = i % 10 + '0'; | |
5305 | h = elf_link_hash_lookup (&htab->elf, sym, FALSE, FALSE, TRUE); | |
5306 | if (h != NULL | |
f5385ebf | 5307 | && !h->def_regular) |
deb0e272 AM |
5308 | { |
5309 | h->root.type = bfd_link_hash_defined; | |
5310 | h->root.u.def.section = htab->sfpr; | |
5311 | h->root.u.def.value = htab->sfpr->size; | |
5312 | h->type = STT_FUNC; | |
f5385ebf | 5313 | h->def_regular = 1; |
deb0e272 AM |
5314 | _bfd_elf_link_hash_hide_symbol (info, h, TRUE); |
5315 | writing = TRUE; | |
5316 | if (htab->sfpr->contents == NULL) | |
5317 | { | |
5318 | htab->sfpr->contents = bfd_alloc (htab->elf.dynobj, SFPR_MAX); | |
5319 | if (htab->sfpr->contents == NULL) | |
5320 | return FALSE; | |
5321 | } | |
5322 | } | |
5323 | if (writing) | |
5324 | { | |
5325 | bfd_byte *p = htab->sfpr->contents + htab->sfpr->size; | |
5326 | if (i != parm->hi) | |
5327 | p = (*parm->write_ent) (htab->elf.dynobj, p, i); | |
5328 | else | |
5329 | p = (*parm->write_tail) (htab->elf.dynobj, p, i); | |
5330 | htab->sfpr->size = p - htab->sfpr->contents; | |
5331 | } | |
5332 | } | |
5333 | ||
5334 | return TRUE; | |
5335 | } | |
5336 | ||
5337 | static bfd_byte * | |
5338 | savegpr0 (bfd *abfd, bfd_byte *p, int r) | |
5339 | { | |
5340 | bfd_put_32 (abfd, STD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
5341 | return p + 4; | |
5342 | } | |
5343 | ||
5344 | static bfd_byte * | |
5345 | savegpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
5346 | { | |
5347 | p = savegpr0 (abfd, p, r); | |
5348 | bfd_put_32 (abfd, STD_R0_0R1 + 16, p); | |
5349 | p = p + 4; | |
5350 | bfd_put_32 (abfd, BLR, p); | |
5351 | return p + 4; | |
5352 | } | |
5353 | ||
5354 | static bfd_byte * | |
5355 | restgpr0 (bfd *abfd, bfd_byte *p, int r) | |
5356 | { | |
5357 | bfd_put_32 (abfd, LD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
5358 | return p + 4; | |
5359 | } | |
5360 | ||
5361 | static bfd_byte * | |
5362 | restgpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
5363 | { | |
5364 | bfd_put_32 (abfd, LD_R0_0R1 + 16, p); | |
5365 | p = p + 4; | |
5366 | p = restgpr0 (abfd, p, r); | |
5367 | bfd_put_32 (abfd, MTLR_R0, p); | |
5368 | p = p + 4; | |
5369 | if (r == 29) | |
5370 | { | |
5371 | p = restgpr0 (abfd, p, 30); | |
5372 | p = restgpr0 (abfd, p, 31); | |
5373 | } | |
5374 | bfd_put_32 (abfd, BLR, p); | |
5375 | return p + 4; | |
5376 | } | |
5377 | ||
5378 | static bfd_byte * | |
5379 | savegpr1 (bfd *abfd, bfd_byte *p, int r) | |
5380 | { | |
5381 | bfd_put_32 (abfd, STD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
5382 | return p + 4; | |
5383 | } | |
5384 | ||
5385 | static bfd_byte * | |
5386 | savegpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
5387 | { | |
5388 | p = savegpr1 (abfd, p, r); | |
5389 | bfd_put_32 (abfd, BLR, p); | |
5390 | return p + 4; | |
5391 | } | |
5392 | ||
5393 | static bfd_byte * | |
5394 | restgpr1 (bfd *abfd, bfd_byte *p, int r) | |
5395 | { | |
5396 | bfd_put_32 (abfd, LD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
5397 | return p + 4; | |
5398 | } | |
5399 | ||
5400 | static bfd_byte * | |
5401 | restgpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
5402 | { | |
5403 | p = restgpr1 (abfd, p, r); | |
5404 | bfd_put_32 (abfd, BLR, p); | |
5405 | return p + 4; | |
5406 | } | |
5407 | ||
5408 | static bfd_byte * | |
5409 | savefpr (bfd *abfd, bfd_byte *p, int r) | |
5410 | { | |
5411 | bfd_put_32 (abfd, STFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
5412 | return p + 4; | |
5413 | } | |
5414 | ||
5415 | static bfd_byte * | |
5416 | savefpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
5417 | { | |
5418 | p = savefpr (abfd, p, r); | |
5419 | bfd_put_32 (abfd, STD_R0_0R1 + 16, p); | |
5420 | p = p + 4; | |
5421 | bfd_put_32 (abfd, BLR, p); | |
5422 | return p + 4; | |
5423 | } | |
5424 | ||
5425 | static bfd_byte * | |
5426 | restfpr (bfd *abfd, bfd_byte *p, int r) | |
5427 | { | |
5428 | bfd_put_32 (abfd, LFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
5429 | return p + 4; | |
5430 | } | |
5431 | ||
5432 | static bfd_byte * | |
5433 | restfpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
5434 | { | |
5435 | bfd_put_32 (abfd, LD_R0_0R1 + 16, p); | |
5436 | p = p + 4; | |
5437 | p = restfpr (abfd, p, r); | |
5438 | bfd_put_32 (abfd, MTLR_R0, p); | |
5439 | p = p + 4; | |
5440 | if (r == 29) | |
5441 | { | |
5442 | p = restfpr (abfd, p, 30); | |
5443 | p = restfpr (abfd, p, 31); | |
5444 | } | |
5445 | bfd_put_32 (abfd, BLR, p); | |
5446 | return p + 4; | |
5447 | } | |
5448 | ||
5449 | static bfd_byte * | |
5450 | savefpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
5451 | { | |
5452 | p = savefpr (abfd, p, r); | |
5453 | bfd_put_32 (abfd, BLR, p); | |
5454 | return p + 4; | |
5455 | } | |
5456 | ||
5457 | static bfd_byte * | |
5458 | restfpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
5459 | { | |
5460 | p = restfpr (abfd, p, r); | |
5461 | bfd_put_32 (abfd, BLR, p); | |
5462 | return p + 4; | |
5463 | } | |
5464 | ||
5465 | static bfd_byte * | |
5466 | savevr (bfd *abfd, bfd_byte *p, int r) | |
5467 | { | |
5468 | bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p); | |
5469 | p = p + 4; | |
5470 | bfd_put_32 (abfd, STVX_VR0_R12_R0 + (r << 21), p); | |
5471 | return p + 4; | |
5472 | } | |
5473 | ||
5474 | static bfd_byte * | |
5475 | savevr_tail (bfd *abfd, bfd_byte *p, int r) | |
5476 | { | |
5477 | p = savevr (abfd, p, r); | |
5478 | bfd_put_32 (abfd, BLR, p); | |
5479 | return p + 4; | |
5480 | } | |
5481 | ||
5482 | static bfd_byte * | |
5483 | restvr (bfd *abfd, bfd_byte *p, int r) | |
5484 | { | |
5485 | bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p); | |
5486 | p = p + 4; | |
5487 | bfd_put_32 (abfd, LVX_VR0_R12_R0 + (r << 21), p); | |
5488 | return p + 4; | |
5489 | } | |
5490 | ||
5491 | static bfd_byte * | |
5492 | restvr_tail (bfd *abfd, bfd_byte *p, int r) | |
5493 | { | |
5494 | p = restvr (abfd, p, r); | |
5495 | bfd_put_32 (abfd, BLR, p); | |
5496 | return p + 4; | |
5497 | } | |
5498 | ||
e86ce104 AM |
5499 | /* Called via elf_link_hash_traverse to transfer dynamic linking |
5500 | information on function code symbol entries to their corresponding | |
5501 | function descriptor symbol entries. */ | |
deb0e272 | 5502 | |
b34976b6 | 5503 | static bfd_boolean |
4ce794b7 | 5504 | func_desc_adjust (struct elf_link_hash_entry *h, void *inf) |
5bd4f169 | 5505 | { |
e86ce104 | 5506 | struct bfd_link_info *info; |
65f38f15 | 5507 | struct ppc_link_hash_table *htab; |
411e1bfb | 5508 | struct plt_entry *ent; |
50bc7936 AM |
5509 | struct ppc_link_hash_entry *fh; |
5510 | struct ppc_link_hash_entry *fdh; | |
5511 | bfd_boolean force_local; | |
5bd4f169 | 5512 | |
50bc7936 AM |
5513 | fh = (struct ppc_link_hash_entry *) h; |
5514 | if (fh->elf.root.type == bfd_link_hash_indirect) | |
b34976b6 | 5515 | return TRUE; |
e86ce104 | 5516 | |
50bc7936 AM |
5517 | if (fh->elf.root.type == bfd_link_hash_warning) |
5518 | fh = (struct ppc_link_hash_entry *) fh->elf.root.u.i.link; | |
e92d460e | 5519 | |
4ce794b7 | 5520 | info = inf; |
65f38f15 | 5521 | htab = ppc_hash_table (info); |
5bd4f169 | 5522 | |
c09bdfe5 AM |
5523 | /* Resolve undefined references to dot-symbols as the value |
5524 | in the function descriptor, if we have one in a regular object. | |
5525 | This is to satisfy cases like ".quad .foo". Calls to functions | |
5526 | in dynamic objects are handled elsewhere. */ | |
5527 | if (fh->elf.root.type == bfd_link_hash_undefweak | |
5528 | && fh->was_undefined | |
5529 | && (fh->oh->elf.root.type == bfd_link_hash_defined | |
5530 | || fh->oh->elf.root.type == bfd_link_hash_defweak) | |
5531 | && get_opd_info (fh->oh->elf.root.u.def.section) != NULL | |
5532 | && opd_entry_value (fh->oh->elf.root.u.def.section, | |
5533 | fh->oh->elf.root.u.def.value, | |
5534 | &fh->elf.root.u.def.section, | |
5535 | &fh->elf.root.u.def.value) != (bfd_vma) -1) | |
5536 | { | |
5537 | fh->elf.root.type = fh->oh->elf.root.type; | |
f5385ebf | 5538 | fh->elf.forced_local = 1; |
c09bdfe5 AM |
5539 | } |
5540 | ||
e86ce104 AM |
5541 | /* If this is a function code symbol, transfer dynamic linking |
5542 | information to the function descriptor symbol. */ | |
50bc7936 | 5543 | if (!fh->is_func) |
b34976b6 | 5544 | return TRUE; |
e86ce104 | 5545 | |
50bc7936 | 5546 | for (ent = fh->elf.plt.plist; ent != NULL; ent = ent->next) |
411e1bfb AM |
5547 | if (ent->plt.refcount > 0) |
5548 | break; | |
50bc7936 AM |
5549 | if (ent == NULL |
5550 | || fh->elf.root.root.string[0] != '.' | |
5551 | || fh->elf.root.root.string[1] == '\0') | |
5552 | return TRUE; | |
5bd4f169 | 5553 | |
50bc7936 AM |
5554 | /* Find the corresponding function descriptor symbol. Create it |
5555 | as undefined if necessary. */ | |
5bd4f169 | 5556 | |
50bc7936 AM |
5557 | fdh = get_fdh (fh, htab); |
5558 | if (fdh != NULL) | |
5559 | while (fdh->elf.root.type == bfd_link_hash_indirect | |
5560 | || fdh->elf.root.type == bfd_link_hash_warning) | |
5561 | fdh = (struct ppc_link_hash_entry *) fdh->elf.root.u.i.link; | |
5bd4f169 | 5562 | |
50bc7936 AM |
5563 | if (fdh == NULL |
5564 | && info->shared | |
5565 | && (fh->elf.root.type == bfd_link_hash_undefined | |
5566 | || fh->elf.root.type == bfd_link_hash_undefweak)) | |
5567 | { | |
908b32fc | 5568 | fdh = make_fdh (info, fh); |
bb700d78 AM |
5569 | if (fdh == NULL) |
5570 | return FALSE; | |
50bc7936 | 5571 | } |
648cca2c | 5572 | |
908b32fc | 5573 | /* Fake function descriptors are made undefweak. If the function |
433817dd AM |
5574 | code symbol is strong undefined, make the fake sym the same. |
5575 | If the function code symbol is defined, then force the fake | |
5576 | descriptor local; We can't support overriding of symbols in a | |
5577 | shared library on a fake descriptor. */ | |
908b32fc AM |
5578 | |
5579 | if (fdh != NULL | |
5580 | && fdh->fake | |
433817dd | 5581 | && fdh->elf.root.type == bfd_link_hash_undefweak) |
908b32fc | 5582 | { |
433817dd AM |
5583 | if (fh->elf.root.type == bfd_link_hash_undefined) |
5584 | { | |
5585 | fdh->elf.root.type = bfd_link_hash_undefined; | |
5586 | bfd_link_add_undef (&htab->elf.root, &fdh->elf.root); | |
5587 | } | |
5588 | else if (fh->elf.root.type == bfd_link_hash_defined | |
5589 | || fh->elf.root.type == bfd_link_hash_defweak) | |
5590 | { | |
5591 | _bfd_elf_link_hash_hide_symbol (info, &fdh->elf, TRUE); | |
5592 | } | |
908b32fc AM |
5593 | } |
5594 | ||
50bc7936 | 5595 | if (fdh != NULL |
f5385ebf | 5596 | && !fdh->elf.forced_local |
50bc7936 | 5597 | && (info->shared |
f5385ebf AM |
5598 | || fdh->elf.def_dynamic |
5599 | || fdh->elf.ref_dynamic | |
50bc7936 AM |
5600 | || (fdh->elf.root.type == bfd_link_hash_undefweak |
5601 | && ELF_ST_VISIBILITY (fdh->elf.other) == STV_DEFAULT))) | |
5602 | { | |
5603 | if (fdh->elf.dynindx == -1) | |
c152c796 | 5604 | if (! bfd_elf_link_record_dynamic_symbol (info, &fdh->elf)) |
50bc7936 | 5605 | return FALSE; |
f5385ebf AM |
5606 | fdh->elf.ref_regular |= fh->elf.ref_regular; |
5607 | fdh->elf.ref_dynamic |= fh->elf.ref_dynamic; | |
5608 | fdh->elf.ref_regular_nonweak |= fh->elf.ref_regular_nonweak; | |
5609 | fdh->elf.non_got_ref |= fh->elf.non_got_ref; | |
50bc7936 | 5610 | if (ELF_ST_VISIBILITY (fh->elf.other) == STV_DEFAULT) |
e86ce104 | 5611 | { |
40d16e0b | 5612 | move_plt_plist (fh, fdh); |
f5385ebf | 5613 | fdh->elf.needs_plt = 1; |
e86ce104 | 5614 | } |
50bc7936 | 5615 | fdh->is_func_descriptor = 1; |
34814b9f AM |
5616 | fdh->oh = fh; |
5617 | fh->oh = fdh; | |
e86ce104 AM |
5618 | } |
5619 | ||
50bc7936 AM |
5620 | /* Now that the info is on the function descriptor, clear the |
5621 | function code sym info. Any function code syms for which we | |
5622 | don't have a definition in a regular file, we force local. | |
5623 | This prevents a shared library from exporting syms that have | |
5624 | been imported from another library. Function code syms that | |
5625 | are really in the library we must leave global to prevent the | |
5626 | linker dragging in a definition from a static library. */ | |
93f3fa99 AM |
5627 | force_local = (!fh->elf.def_regular |
5628 | || fdh == NULL | |
5629 | || !fdh->elf.def_regular | |
5630 | || fdh->elf.forced_local); | |
50bc7936 AM |
5631 | _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local); |
5632 | ||
b34976b6 | 5633 | return TRUE; |
e86ce104 | 5634 | } |
40b8271b | 5635 | |
e86ce104 | 5636 | /* Called near the start of bfd_elf_size_dynamic_sections. We use |
82bd7b59 AM |
5637 | this hook to a) provide some gcc support functions, and b) transfer |
5638 | dynamic linking information gathered so far on function code symbol | |
5639 | entries, to their corresponding function descriptor symbol entries. */ | |
deb0e272 | 5640 | |
b34976b6 | 5641 | static bfd_boolean |
4ce794b7 AM |
5642 | ppc64_elf_func_desc_adjust (bfd *obfd ATTRIBUTE_UNUSED, |
5643 | struct bfd_link_info *info) | |
e86ce104 AM |
5644 | { |
5645 | struct ppc_link_hash_table *htab; | |
82bd7b59 | 5646 | unsigned int i; |
deb0e272 AM |
5647 | const struct sfpr_def_parms funcs[] = |
5648 | { | |
5649 | { "_savegpr0_", 14, 31, savegpr0, savegpr0_tail }, | |
5650 | { "_restgpr0_", 14, 29, restgpr0, restgpr0_tail }, | |
5651 | { "_restgpr0_", 30, 31, restgpr0, restgpr0_tail }, | |
5652 | { "_savegpr1_", 14, 31, savegpr1, savegpr1_tail }, | |
5653 | { "_restgpr1_", 14, 31, restgpr1, restgpr1_tail }, | |
5654 | { "_savefpr_", 14, 31, savefpr, savefpr0_tail }, | |
5655 | { "_restfpr_", 14, 29, restfpr, restfpr0_tail }, | |
5656 | { "_restfpr_", 30, 31, restfpr, restfpr0_tail }, | |
5657 | { "._savef", 14, 31, savefpr, savefpr1_tail }, | |
5658 | { "._restf", 14, 31, restfpr, restfpr1_tail }, | |
5659 | { "_savevr_", 20, 31, savevr, savevr_tail }, | |
5660 | { "_restvr_", 20, 31, restvr, restvr_tail } | |
5661 | }; | |
e86ce104 AM |
5662 | |
5663 | htab = ppc_hash_table (info); | |
82bd7b59 AM |
5664 | if (htab->sfpr == NULL) |
5665 | /* We don't have any relocs. */ | |
b34976b6 | 5666 | return TRUE; |
82bd7b59 | 5667 | |
deb0e272 AM |
5668 | /* Provide any missing _save* and _rest* functions. */ |
5669 | htab->sfpr->size = 0; | |
5670 | for (i = 0; i < sizeof (funcs) / sizeof (funcs[0]); i++) | |
5671 | if (!sfpr_define (info, &funcs[i])) | |
5672 | return FALSE; | |
82bd7b59 | 5673 | |
4ce794b7 | 5674 | elf_link_hash_traverse (&htab->elf, func_desc_adjust, info); |
805fc799 | 5675 | |
eea6121a | 5676 | if (htab->sfpr->size == 0) |
8423293d | 5677 | htab->sfpr->flags |= SEC_EXCLUDE; |
82bd7b59 | 5678 | |
b34976b6 | 5679 | return TRUE; |
e86ce104 AM |
5680 | } |
5681 | ||
5682 | /* Adjust a symbol defined by a dynamic object and referenced by a | |
5683 | regular object. The current definition is in some section of the | |
5684 | dynamic object, but we're not including those sections. We have to | |
5685 | change the definition to something the rest of the link can | |
5686 | understand. */ | |
5687 | ||
b34976b6 | 5688 | static bfd_boolean |
4ce794b7 AM |
5689 | ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info *info, |
5690 | struct elf_link_hash_entry *h) | |
e86ce104 AM |
5691 | { |
5692 | struct ppc_link_hash_table *htab; | |
e86ce104 AM |
5693 | asection *s; |
5694 | unsigned int power_of_two; | |
5695 | ||
5696 | htab = ppc_hash_table (info); | |
5697 | ||
5698 | /* Deal with function syms. */ | |
5699 | if (h->type == STT_FUNC | |
f5385ebf | 5700 | || h->needs_plt) |
e86ce104 AM |
5701 | { |
5702 | /* Clear procedure linkage table information for any symbol that | |
5703 | won't need a .plt entry. */ | |
411e1bfb AM |
5704 | struct plt_entry *ent; |
5705 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) | |
5706 | if (ent->plt.refcount > 0) | |
5707 | break; | |
8387904d | 5708 | if (ent == NULL |
9c7a29a3 AM |
5709 | || SYMBOL_CALLS_LOCAL (info, h) |
5710 | || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
5711 | && h->root.type == bfd_link_hash_undefweak)) | |
40b8271b | 5712 | { |
411e1bfb | 5713 | h->plt.plist = NULL; |
f5385ebf | 5714 | h->needs_plt = 0; |
40b8271b | 5715 | } |
5bd4f169 | 5716 | } |
bbd7ec4a | 5717 | else |
411e1bfb | 5718 | h->plt.plist = NULL; |
5bd4f169 AM |
5719 | |
5720 | /* If this is a weak symbol, and there is a real definition, the | |
5721 | processor independent code will have arranged for us to see the | |
5722 | real definition first, and we can just use the same value. */ | |
f6e332e6 | 5723 | if (h->u.weakdef != NULL) |
5bd4f169 | 5724 | { |
f6e332e6 AM |
5725 | BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined |
5726 | || h->u.weakdef->root.type == bfd_link_hash_defweak); | |
5727 | h->root.u.def.section = h->u.weakdef->root.u.def.section; | |
5728 | h->root.u.def.value = h->u.weakdef->root.u.def.value; | |
a23b6845 | 5729 | if (ELIMINATE_COPY_RELOCS) |
f6e332e6 | 5730 | h->non_got_ref = h->u.weakdef->non_got_ref; |
b34976b6 | 5731 | return TRUE; |
5bd4f169 AM |
5732 | } |
5733 | ||
5bd4f169 AM |
5734 | /* If we are creating a shared library, we must presume that the |
5735 | only references to the symbol are via the global offset table. | |
5736 | For such cases we need not do anything here; the relocations will | |
5737 | be handled correctly by relocate_section. */ | |
5738 | if (info->shared) | |
b34976b6 | 5739 | return TRUE; |
5bd4f169 | 5740 | |
65f38f15 AM |
5741 | /* If there are no references to this symbol that do not use the |
5742 | GOT, we don't need to generate a copy reloc. */ | |
f5385ebf | 5743 | if (!h->non_got_ref) |
b34976b6 | 5744 | return TRUE; |
65f38f15 | 5745 | |
f4656909 | 5746 | if (ELIMINATE_COPY_RELOCS) |
65f38f15 | 5747 | { |
f4656909 AM |
5748 | struct ppc_link_hash_entry * eh; |
5749 | struct ppc_dyn_relocs *p; | |
65f38f15 | 5750 | |
f4656909 AM |
5751 | eh = (struct ppc_link_hash_entry *) h; |
5752 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
5753 | { | |
5754 | s = p->sec->output_section; | |
5755 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
5756 | break; | |
5757 | } | |
5758 | ||
5759 | /* If we didn't find any dynamic relocs in read-only sections, then | |
5760 | we'll be keeping the dynamic relocs and avoiding the copy reloc. */ | |
5761 | if (p == NULL) | |
5762 | { | |
f5385ebf | 5763 | h->non_got_ref = 0; |
f4656909 AM |
5764 | return TRUE; |
5765 | } | |
65f38f15 AM |
5766 | } |
5767 | ||
5d35169e | 5768 | if (h->plt.plist != NULL) |
97b639ba AM |
5769 | { |
5770 | /* We should never get here, but unfortunately there are versions | |
5771 | of gcc out there that improperly (for this ABI) put initialized | |
5772 | function pointers, vtable refs and suchlike in read-only | |
5773 | sections. Allow them to proceed, but warn that this might | |
5774 | break at runtime. */ | |
5775 | (*_bfd_error_handler) | |
5776 | (_("copy reloc against `%s' requires lazy plt linking; " | |
5777 | "avoid setting LD_BIND_NOW=1 or upgrade gcc"), | |
5778 | h->root.root.string); | |
5779 | } | |
5d35169e AM |
5780 | |
5781 | /* This is a reference to a symbol defined by a dynamic object which | |
5782 | is not a function. */ | |
5783 | ||
909272ee AM |
5784 | if (h->size == 0) |
5785 | { | |
5786 | (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"), | |
5787 | h->root.root.string); | |
5788 | return TRUE; | |
5789 | } | |
5790 | ||
5bd4f169 AM |
5791 | /* We must allocate the symbol in our .dynbss section, which will |
5792 | become part of the .bss section of the executable. There will be | |
5793 | an entry for this symbol in the .dynsym section. The dynamic | |
5794 | object will contain position independent code, so all references | |
5795 | from the dynamic object to this symbol will go through the global | |
5796 | offset table. The dynamic linker will use the .dynsym entry to | |
5797 | determine the address it must put in the global offset table, so | |
5798 | both the dynamic object and the regular object will refer to the | |
5799 | same memory location for the variable. */ | |
5bd4f169 | 5800 | |
04c9666a AM |
5801 | /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker |
5802 | to copy the initial value out of the dynamic object and into the | |
5bd4f169 AM |
5803 | runtime process image. We need to remember the offset into the |
5804 | .rela.bss section we are going to use. */ | |
5805 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) | |
5806 | { | |
eea6121a | 5807 | htab->relbss->size += sizeof (Elf64_External_Rela); |
f5385ebf | 5808 | h->needs_copy = 1; |
5bd4f169 AM |
5809 | } |
5810 | ||
5811 | /* We need to figure out the alignment required for this symbol. I | |
5812 | have no idea how ELF linkers handle this. */ | |
5813 | power_of_two = bfd_log2 (h->size); | |
5814 | if (power_of_two > 4) | |
5815 | power_of_two = 4; | |
5816 | ||
5817 | /* Apply the required alignment. */ | |
4ce794b7 | 5818 | s = htab->dynbss; |
eea6121a | 5819 | s->size = BFD_ALIGN (s->size, (bfd_size_type) (1 << power_of_two)); |
65f38f15 | 5820 | if (power_of_two > bfd_get_section_alignment (htab->elf.dynobj, s)) |
5bd4f169 | 5821 | { |
65f38f15 | 5822 | if (! bfd_set_section_alignment (htab->elf.dynobj, s, power_of_two)) |
b34976b6 | 5823 | return FALSE; |
5bd4f169 AM |
5824 | } |
5825 | ||
5826 | /* Define the symbol as being at this point in the section. */ | |
5827 | h->root.u.def.section = s; | |
eea6121a | 5828 | h->root.u.def.value = s->size; |
5bd4f169 AM |
5829 | |
5830 | /* Increment the section size to make room for the symbol. */ | |
eea6121a | 5831 | s->size += h->size; |
5bd4f169 | 5832 | |
b34976b6 | 5833 | return TRUE; |
5bd4f169 AM |
5834 | } |
5835 | ||
e86ce104 AM |
5836 | /* If given a function descriptor symbol, hide both the function code |
5837 | sym and the descriptor. */ | |
5838 | static void | |
4ce794b7 AM |
5839 | ppc64_elf_hide_symbol (struct bfd_link_info *info, |
5840 | struct elf_link_hash_entry *h, | |
5841 | bfd_boolean force_local) | |
e86ce104 | 5842 | { |
34814b9f | 5843 | struct ppc_link_hash_entry *eh; |
e86ce104 AM |
5844 | _bfd_elf_link_hash_hide_symbol (info, h, force_local); |
5845 | ||
34814b9f AM |
5846 | eh = (struct ppc_link_hash_entry *) h; |
5847 | if (eh->is_func_descriptor) | |
e86ce104 | 5848 | { |
34814b9f | 5849 | struct ppc_link_hash_entry *fh = eh->oh; |
e86ce104 | 5850 | |
721956f4 | 5851 | if (fh == NULL) |
d1329ca3 AM |
5852 | { |
5853 | const char *p, *q; | |
5854 | struct ppc_link_hash_table *htab; | |
5855 | char save; | |
5856 | ||
5857 | /* We aren't supposed to use alloca in BFD because on | |
5858 | systems which do not have alloca the version in libiberty | |
5859 | calls xmalloc, which might cause the program to crash | |
5860 | when it runs out of memory. This function doesn't have a | |
5861 | return status, so there's no way to gracefully return an | |
5862 | error. So cheat. We know that string[-1] can be safely | |
34814b9f AM |
5863 | accessed; It's either a string in an ELF string table, |
5864 | or allocated in an objalloc structure. */ | |
d1329ca3 | 5865 | |
34814b9f | 5866 | p = eh->elf.root.root.string - 1; |
d1329ca3 AM |
5867 | save = *p; |
5868 | *(char *) p = '.'; | |
5869 | htab = ppc_hash_table (info); | |
34814b9f AM |
5870 | fh = (struct ppc_link_hash_entry *) |
5871 | elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE); | |
d1329ca3 AM |
5872 | *(char *) p = save; |
5873 | ||
5874 | /* Unfortunately, if it so happens that the string we were | |
5875 | looking for was allocated immediately before this string, | |
5876 | then we overwrote the string terminator. That's the only | |
5877 | reason the lookup should fail. */ | |
5878 | if (fh == NULL) | |
5879 | { | |
34814b9f AM |
5880 | q = eh->elf.root.root.string + strlen (eh->elf.root.root.string); |
5881 | while (q >= eh->elf.root.root.string && *q == *p) | |
d1329ca3 | 5882 | --q, --p; |
34814b9f AM |
5883 | if (q < eh->elf.root.root.string && *p == '.') |
5884 | fh = (struct ppc_link_hash_entry *) | |
5885 | elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE); | |
d1329ca3 AM |
5886 | } |
5887 | if (fh != NULL) | |
5888 | { | |
34814b9f AM |
5889 | eh->oh = fh; |
5890 | fh->oh = eh; | |
d1329ca3 AM |
5891 | } |
5892 | } | |
e86ce104 | 5893 | if (fh != NULL) |
34814b9f | 5894 | _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local); |
e86ce104 AM |
5895 | } |
5896 | } | |
5897 | ||
411e1bfb | 5898 | static bfd_boolean |
8843416a AM |
5899 | get_sym_h (struct elf_link_hash_entry **hp, |
5900 | Elf_Internal_Sym **symp, | |
5901 | asection **symsecp, | |
5902 | char **tls_maskp, | |
5903 | Elf_Internal_Sym **locsymsp, | |
5904 | unsigned long r_symndx, | |
5905 | bfd *ibfd) | |
411e1bfb AM |
5906 | { |
5907 | Elf_Internal_Shdr *symtab_hdr = &elf_tdata (ibfd)->symtab_hdr; | |
5908 | ||
5909 | if (r_symndx >= symtab_hdr->sh_info) | |
5910 | { | |
5911 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd); | |
5912 | struct elf_link_hash_entry *h; | |
5913 | ||
5914 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
5915 | while (h->root.type == bfd_link_hash_indirect | |
5916 | || h->root.type == bfd_link_hash_warning) | |
5917 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
5918 | ||
5919 | if (hp != NULL) | |
5920 | *hp = h; | |
5921 | ||
5922 | if (symp != NULL) | |
5923 | *symp = NULL; | |
5924 | ||
5925 | if (symsecp != NULL) | |
5926 | { | |
5927 | asection *symsec = NULL; | |
5928 | if (h->root.type == bfd_link_hash_defined | |
5929 | || h->root.type == bfd_link_hash_defweak) | |
5930 | symsec = h->root.u.def.section; | |
5931 | *symsecp = symsec; | |
5932 | } | |
5933 | ||
e7b938ca | 5934 | if (tls_maskp != NULL) |
411e1bfb AM |
5935 | { |
5936 | struct ppc_link_hash_entry *eh; | |
5937 | ||
5938 | eh = (struct ppc_link_hash_entry *) h; | |
e7b938ca | 5939 | *tls_maskp = &eh->tls_mask; |
411e1bfb AM |
5940 | } |
5941 | } | |
5942 | else | |
5943 | { | |
5944 | Elf_Internal_Sym *sym; | |
5945 | Elf_Internal_Sym *locsyms = *locsymsp; | |
5946 | ||
5947 | if (locsyms == NULL) | |
5948 | { | |
5949 | locsyms = (Elf_Internal_Sym *) symtab_hdr->contents; | |
5950 | if (locsyms == NULL) | |
5951 | locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr, | |
5952 | symtab_hdr->sh_info, | |
5953 | 0, NULL, NULL, NULL); | |
5954 | if (locsyms == NULL) | |
5955 | return FALSE; | |
5956 | *locsymsp = locsyms; | |
5957 | } | |
5958 | sym = locsyms + r_symndx; | |
5959 | ||
5960 | if (hp != NULL) | |
5961 | *hp = NULL; | |
5962 | ||
5963 | if (symp != NULL) | |
5964 | *symp = sym; | |
5965 | ||
5966 | if (symsecp != NULL) | |
5967 | { | |
5968 | asection *symsec = NULL; | |
5969 | if ((sym->st_shndx != SHN_UNDEF | |
5970 | && sym->st_shndx < SHN_LORESERVE) | |
5971 | || sym->st_shndx > SHN_HIRESERVE) | |
5972 | symsec = bfd_section_from_elf_index (ibfd, sym->st_shndx); | |
5973 | *symsecp = symsec; | |
5974 | } | |
5975 | ||
e7b938ca | 5976 | if (tls_maskp != NULL) |
411e1bfb AM |
5977 | { |
5978 | struct got_entry **lgot_ents; | |
e7b938ca | 5979 | char *tls_mask; |
411e1bfb | 5980 | |
e7b938ca | 5981 | tls_mask = NULL; |
411e1bfb AM |
5982 | lgot_ents = elf_local_got_ents (ibfd); |
5983 | if (lgot_ents != NULL) | |
5984 | { | |
e7b938ca AM |
5985 | char *lgot_masks = (char *) (lgot_ents + symtab_hdr->sh_info); |
5986 | tls_mask = &lgot_masks[r_symndx]; | |
411e1bfb | 5987 | } |
e7b938ca | 5988 | *tls_maskp = tls_mask; |
411e1bfb AM |
5989 | } |
5990 | } | |
5991 | return TRUE; | |
5992 | } | |
5993 | ||
e7b938ca | 5994 | /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on |
951fd09b | 5995 | error, 2 on a toc GD type suitable for optimization, 3 on a toc LD |
ad8e1ba5 | 5996 | type suitable for optimization, and 1 otherwise. */ |
951fd09b AM |
5997 | |
5998 | static int | |
0d4792f7 AM |
5999 | get_tls_mask (char **tls_maskp, unsigned long *toc_symndx, |
6000 | Elf_Internal_Sym **locsymsp, | |
4ce794b7 | 6001 | const Elf_Internal_Rela *rel, bfd *ibfd) |
411e1bfb AM |
6002 | { |
6003 | unsigned long r_symndx; | |
0d4792f7 | 6004 | int next_r; |
411e1bfb AM |
6005 | struct elf_link_hash_entry *h; |
6006 | Elf_Internal_Sym *sym; | |
6007 | asection *sec; | |
6008 | bfd_vma off; | |
6009 | ||
6010 | r_symndx = ELF64_R_SYM (rel->r_info); | |
e7b938ca | 6011 | if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd)) |
951fd09b | 6012 | return 0; |
411e1bfb | 6013 | |
e7b938ca | 6014 | if ((*tls_maskp != NULL && **tls_maskp != 0) |
411e1bfb AM |
6015 | || sec == NULL |
6016 | || ppc64_elf_section_data (sec)->t_symndx == NULL) | |
951fd09b | 6017 | return 1; |
411e1bfb AM |
6018 | |
6019 | /* Look inside a TOC section too. */ | |
6020 | if (h != NULL) | |
6021 | { | |
6022 | BFD_ASSERT (h->root.type == bfd_link_hash_defined); | |
6023 | off = h->root.u.def.value; | |
6024 | } | |
6025 | else | |
6026 | off = sym->st_value; | |
6027 | off += rel->r_addend; | |
6028 | BFD_ASSERT (off % 8 == 0); | |
6029 | r_symndx = ppc64_elf_section_data (sec)->t_symndx[off / 8]; | |
951fd09b | 6030 | next_r = ppc64_elf_section_data (sec)->t_symndx[off / 8 + 1]; |
e7b938ca | 6031 | if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd)) |
951fd09b | 6032 | return 0; |
0d4792f7 AM |
6033 | if (toc_symndx != NULL) |
6034 | *toc_symndx = r_symndx; | |
6035 | if ((h == NULL | |
6036 | || ((h->root.type == bfd_link_hash_defined | |
6037 | || h->root.type == bfd_link_hash_defweak) | |
f5385ebf | 6038 | && !h->def_dynamic)) |
0d4792f7 AM |
6039 | && (next_r == -1 || next_r == -2)) |
6040 | return 1 - next_r; | |
951fd09b | 6041 | return 1; |
411e1bfb AM |
6042 | } |
6043 | ||
754021d0 | 6044 | /* Adjust all global syms defined in opd sections. In gcc generated |
8387904d | 6045 | code for the old ABI, these will already have been done. */ |
754021d0 AM |
6046 | |
6047 | static bfd_boolean | |
6048 | adjust_opd_syms (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED) | |
6049 | { | |
6050 | struct ppc_link_hash_entry *eh; | |
6051 | asection *sym_sec; | |
6052 | long *opd_adjust; | |
6053 | ||
6054 | if (h->root.type == bfd_link_hash_indirect) | |
6055 | return TRUE; | |
6056 | ||
6057 | if (h->root.type == bfd_link_hash_warning) | |
6058 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
6059 | ||
6060 | if (h->root.type != bfd_link_hash_defined | |
6061 | && h->root.type != bfd_link_hash_defweak) | |
6062 | return TRUE; | |
6063 | ||
6064 | eh = (struct ppc_link_hash_entry *) h; | |
6065 | if (eh->adjust_done) | |
6066 | return TRUE; | |
6067 | ||
6068 | sym_sec = eh->elf.root.u.def.section; | |
4025353c AM |
6069 | opd_adjust = get_opd_info (sym_sec); |
6070 | if (opd_adjust != NULL) | |
754021d0 | 6071 | { |
3f764659 | 6072 | long adjust = opd_adjust[eh->elf.root.u.def.value / 8]; |
4025353c AM |
6073 | if (adjust == -1) |
6074 | { | |
6075 | /* This entry has been deleted. */ | |
433817dd | 6076 | asection *dsec = ppc64_elf_tdata (sym_sec->owner)->u.deleted_section; |
81688140 AM |
6077 | if (dsec == NULL) |
6078 | { | |
6079 | for (dsec = sym_sec->owner->sections; dsec; dsec = dsec->next) | |
6080 | if (elf_discarded_section (dsec)) | |
6081 | { | |
433817dd | 6082 | ppc64_elf_tdata (sym_sec->owner)->u.deleted_section = dsec; |
81688140 AM |
6083 | break; |
6084 | } | |
6085 | } | |
4025353c | 6086 | eh->elf.root.u.def.value = 0; |
81688140 | 6087 | eh->elf.root.u.def.section = dsec; |
4025353c AM |
6088 | } |
6089 | else | |
6090 | eh->elf.root.u.def.value += adjust; | |
754021d0 AM |
6091 | eh->adjust_done = 1; |
6092 | } | |
6093 | return TRUE; | |
6094 | } | |
6095 | ||
8c1d1bb8 AM |
6096 | /* Handles decrementing dynamic reloc counts for the reloc specified by |
6097 | R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM_SEC | |
6098 | have already been determined. */ | |
6099 | ||
6100 | static bfd_boolean | |
6101 | dec_dynrel_count (bfd_vma r_info, | |
6102 | asection *sec, | |
6103 | struct bfd_link_info *info, | |
6104 | Elf_Internal_Sym **local_syms, | |
6105 | struct elf_link_hash_entry *h, | |
6106 | asection *sym_sec) | |
6107 | { | |
6108 | enum elf_ppc64_reloc_type r_type; | |
6109 | struct ppc_dyn_relocs *p; | |
6110 | struct ppc_dyn_relocs **pp; | |
6111 | ||
6112 | /* Can this reloc be dynamic? This switch, and later tests here | |
6113 | should be kept in sync with the code in check_relocs. */ | |
6114 | r_type = ELF64_R_TYPE (r_info); | |
6115 | switch (r_type) | |
6116 | { | |
6117 | default: | |
6118 | return TRUE; | |
6119 | ||
6120 | case R_PPC64_TPREL16: | |
6121 | case R_PPC64_TPREL16_LO: | |
6122 | case R_PPC64_TPREL16_HI: | |
6123 | case R_PPC64_TPREL16_HA: | |
6124 | case R_PPC64_TPREL16_DS: | |
6125 | case R_PPC64_TPREL16_LO_DS: | |
6126 | case R_PPC64_TPREL16_HIGHER: | |
6127 | case R_PPC64_TPREL16_HIGHERA: | |
6128 | case R_PPC64_TPREL16_HIGHEST: | |
6129 | case R_PPC64_TPREL16_HIGHESTA: | |
6130 | if (!info->shared) | |
6131 | return TRUE; | |
6132 | ||
6133 | case R_PPC64_TPREL64: | |
6134 | case R_PPC64_DTPMOD64: | |
6135 | case R_PPC64_DTPREL64: | |
6136 | case R_PPC64_ADDR64: | |
6137 | case R_PPC64_REL30: | |
6138 | case R_PPC64_REL32: | |
6139 | case R_PPC64_REL64: | |
6140 | case R_PPC64_ADDR14: | |
6141 | case R_PPC64_ADDR14_BRNTAKEN: | |
6142 | case R_PPC64_ADDR14_BRTAKEN: | |
6143 | case R_PPC64_ADDR16: | |
6144 | case R_PPC64_ADDR16_DS: | |
6145 | case R_PPC64_ADDR16_HA: | |
6146 | case R_PPC64_ADDR16_HI: | |
6147 | case R_PPC64_ADDR16_HIGHER: | |
6148 | case R_PPC64_ADDR16_HIGHERA: | |
6149 | case R_PPC64_ADDR16_HIGHEST: | |
6150 | case R_PPC64_ADDR16_HIGHESTA: | |
6151 | case R_PPC64_ADDR16_LO: | |
6152 | case R_PPC64_ADDR16_LO_DS: | |
6153 | case R_PPC64_ADDR24: | |
6154 | case R_PPC64_ADDR32: | |
6155 | case R_PPC64_UADDR16: | |
6156 | case R_PPC64_UADDR32: | |
6157 | case R_PPC64_UADDR64: | |
6158 | case R_PPC64_TOC: | |
6159 | break; | |
6160 | } | |
6161 | ||
6162 | if (local_syms != NULL) | |
6163 | { | |
6164 | unsigned long r_symndx; | |
6165 | Elf_Internal_Sym *sym; | |
6166 | bfd *ibfd = sec->owner; | |
6167 | ||
6168 | r_symndx = ELF64_R_SYM (r_info); | |
6169 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, local_syms, r_symndx, ibfd)) | |
6170 | return FALSE; | |
6171 | } | |
6172 | ||
6173 | if ((info->shared | |
6174 | && (MUST_BE_DYN_RELOC (r_type) | |
6175 | || (h != NULL | |
6176 | && (!info->symbolic | |
6177 | || h->root.type == bfd_link_hash_defweak | |
6178 | || !h->def_regular)))) | |
6179 | || (ELIMINATE_COPY_RELOCS | |
6180 | && !info->shared | |
6181 | && h != NULL | |
6182 | && (h->root.type == bfd_link_hash_defweak | |
6183 | || !h->def_regular))) | |
6184 | ; | |
6185 | else | |
6186 | return TRUE; | |
6187 | ||
6188 | if (h != NULL) | |
6189 | pp = &((struct ppc_link_hash_entry *) h)->dyn_relocs; | |
8c1d1bb8 | 6190 | else |
6edfbbad | 6191 | { |
60124e18 AM |
6192 | if (sym_sec != NULL) |
6193 | { | |
6194 | void *vpp = &elf_section_data (sym_sec)->local_dynrel; | |
6195 | pp = (struct ppc_dyn_relocs **) vpp; | |
6196 | } | |
6197 | else | |
6198 | { | |
6199 | void *vpp = &elf_section_data (sec)->local_dynrel; | |
6200 | pp = (struct ppc_dyn_relocs **) vpp; | |
6201 | } | |
6202 | ||
6203 | /* elf_gc_sweep may have already removed all dyn relocs associated | |
6204 | with local syms for a given section. Don't report a dynreloc | |
6205 | miscount. */ | |
6206 | if (*pp == NULL) | |
6207 | return TRUE; | |
6edfbbad | 6208 | } |
8c1d1bb8 AM |
6209 | |
6210 | while ((p = *pp) != NULL) | |
6211 | { | |
6212 | if (p->sec == sec) | |
6213 | { | |
6214 | if (!MUST_BE_DYN_RELOC (r_type)) | |
6215 | p->pc_count -= 1; | |
6216 | p->count -= 1; | |
6217 | if (p->count == 0) | |
6218 | *pp = p->next; | |
6219 | return TRUE; | |
6220 | } | |
6221 | pp = &p->next; | |
6222 | } | |
6223 | ||
6224 | (*_bfd_error_handler) (_("dynreloc miscount for %B, section %A"), | |
6225 | sec->owner, sec); | |
6226 | bfd_set_error (bfd_error_bad_value); | |
6227 | return FALSE; | |
6228 | } | |
6229 | ||
754021d0 AM |
6230 | /* Remove unused Official Procedure Descriptor entries. Currently we |
6231 | only remove those associated with functions in discarded link-once | |
6232 | sections, or weakly defined functions that have been overridden. It | |
6233 | would be possible to remove many more entries for statically linked | |
6234 | applications. */ | |
6235 | ||
b34976b6 | 6236 | bfd_boolean |
3f764659 | 6237 | ppc64_elf_edit_opd (bfd *obfd, struct bfd_link_info *info, |
b4f4e59f | 6238 | bfd_boolean no_opd_opt, |
3f764659 | 6239 | bfd_boolean non_overlapping) |
1e2f5b6e AM |
6240 | { |
6241 | bfd *ibfd; | |
754021d0 | 6242 | bfd_boolean some_edited = FALSE; |
3f764659 | 6243 | asection *need_pad = NULL; |
1e2f5b6e | 6244 | |
411e1bfb | 6245 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) |
1e2f5b6e AM |
6246 | { |
6247 | asection *sec; | |
6248 | Elf_Internal_Rela *relstart, *rel, *relend; | |
6249 | Elf_Internal_Shdr *symtab_hdr; | |
6cdc0ccc | 6250 | Elf_Internal_Sym *local_syms; |
1e2f5b6e AM |
6251 | struct elf_link_hash_entry **sym_hashes; |
6252 | bfd_vma offset; | |
d6fe2dc1 | 6253 | bfd_size_type amt; |
4025353c | 6254 | long *opd_adjust; |
3f764659 JJ |
6255 | bfd_boolean need_edit, add_aux_fields; |
6256 | bfd_size_type cnt_16b = 0; | |
1e2f5b6e AM |
6257 | |
6258 | sec = bfd_get_section_by_name (ibfd, ".opd"); | |
46de2a7c | 6259 | if (sec == NULL || sec->size == 0) |
1e2f5b6e AM |
6260 | continue; |
6261 | ||
3f764659 | 6262 | amt = sec->size * sizeof (long) / 8; |
4025353c AM |
6263 | opd_adjust = get_opd_info (sec); |
6264 | if (opd_adjust == NULL) | |
d6fe2dc1 | 6265 | { |
4b85d634 AM |
6266 | /* check_relocs hasn't been called. Must be a ld -r link |
6267 | or --just-symbols object. */ | |
b4f4e59f | 6268 | opd_adjust = bfd_alloc (obfd, amt); |
46de2a7c AM |
6269 | if (opd_adjust == NULL) |
6270 | return FALSE; | |
4025353c | 6271 | ppc64_elf_section_data (sec)->opd.adjust = opd_adjust; |
d6fe2dc1 | 6272 | } |
4025353c | 6273 | memset (opd_adjust, 0, amt); |
1e2f5b6e | 6274 | |
b4f4e59f AM |
6275 | if (no_opd_opt) |
6276 | continue; | |
6277 | ||
4b85d634 AM |
6278 | if (sec->sec_info_type == ELF_INFO_TYPE_JUST_SYMS) |
6279 | continue; | |
6280 | ||
1e2f5b6e AM |
6281 | if (sec->output_section == bfd_abs_section_ptr) |
6282 | continue; | |
6283 | ||
6284 | /* Look through the section relocs. */ | |
6285 | if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0) | |
6286 | continue; | |
6287 | ||
6cdc0ccc | 6288 | local_syms = NULL; |
1e2f5b6e AM |
6289 | symtab_hdr = &elf_tdata (ibfd)->symtab_hdr; |
6290 | sym_hashes = elf_sym_hashes (ibfd); | |
6291 | ||
6292 | /* Read the relocations. */ | |
4ce794b7 | 6293 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, |
45d6a902 | 6294 | info->keep_memory); |
1e2f5b6e | 6295 | if (relstart == NULL) |
b34976b6 | 6296 | return FALSE; |
1e2f5b6e AM |
6297 | |
6298 | /* First run through the relocs to check they are sane, and to | |
6299 | determine whether we need to edit this opd section. */ | |
b34976b6 | 6300 | need_edit = FALSE; |
3f764659 | 6301 | need_pad = sec; |
1e2f5b6e AM |
6302 | offset = 0; |
6303 | relend = relstart + sec->reloc_count; | |
50bc7936 | 6304 | for (rel = relstart; rel < relend; ) |
1e2f5b6e | 6305 | { |
04c9666a | 6306 | enum elf_ppc64_reloc_type r_type; |
1e2f5b6e AM |
6307 | unsigned long r_symndx; |
6308 | asection *sym_sec; | |
6309 | struct elf_link_hash_entry *h; | |
6310 | Elf_Internal_Sym *sym; | |
6311 | ||
3f764659 | 6312 | /* .opd contains a regular array of 16 or 24 byte entries. We're |
1e2f5b6e AM |
6313 | only interested in the reloc pointing to a function entry |
6314 | point. */ | |
50bc7936 AM |
6315 | if (rel->r_offset != offset |
6316 | || rel + 1 >= relend | |
6317 | || (rel + 1)->r_offset != offset + 8) | |
1e2f5b6e AM |
6318 | { |
6319 | /* If someone messes with .opd alignment then after a | |
6320 | "ld -r" we might have padding in the middle of .opd. | |
6321 | Also, there's nothing to prevent someone putting | |
6322 | something silly in .opd with the assembler. No .opd | |
b34976b6 | 6323 | optimization for them! */ |
3f764659 | 6324 | broken_opd: |
1e2f5b6e | 6325 | (*_bfd_error_handler) |
d003868e | 6326 | (_("%B: .opd is not a regular array of opd entries"), ibfd); |
b34976b6 | 6327 | need_edit = FALSE; |
1e2f5b6e AM |
6328 | break; |
6329 | } | |
6330 | ||
50bc7936 AM |
6331 | if ((r_type = ELF64_R_TYPE (rel->r_info)) != R_PPC64_ADDR64 |
6332 | || (r_type = ELF64_R_TYPE ((rel + 1)->r_info)) != R_PPC64_TOC) | |
6333 | { | |
6334 | (*_bfd_error_handler) | |
d003868e AM |
6335 | (_("%B: unexpected reloc type %u in .opd section"), |
6336 | ibfd, r_type); | |
50bc7936 AM |
6337 | need_edit = FALSE; |
6338 | break; | |
6339 | } | |
6340 | ||
1e2f5b6e | 6341 | r_symndx = ELF64_R_SYM (rel->r_info); |
411e1bfb AM |
6342 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, |
6343 | r_symndx, ibfd)) | |
50bc7936 | 6344 | goto error_ret; |
1e2f5b6e AM |
6345 | |
6346 | if (sym_sec == NULL || sym_sec->owner == NULL) | |
6347 | { | |
411e1bfb AM |
6348 | const char *sym_name; |
6349 | if (h != NULL) | |
6350 | sym_name = h->root.root.string; | |
6351 | else | |
26c61ae5 L |
6352 | sym_name = bfd_elf_sym_name (ibfd, symtab_hdr, sym, |
6353 | sym_sec); | |
411e1bfb | 6354 | |
1e2f5b6e | 6355 | (*_bfd_error_handler) |
d003868e AM |
6356 | (_("%B: undefined sym `%s' in .opd section"), |
6357 | ibfd, sym_name); | |
b34976b6 | 6358 | need_edit = FALSE; |
1e2f5b6e AM |
6359 | break; |
6360 | } | |
6361 | ||
51020317 AM |
6362 | /* opd entries are always for functions defined in the |
6363 | current input bfd. If the symbol isn't defined in the | |
6364 | input bfd, then we won't be using the function in this | |
6365 | bfd; It must be defined in a linkonce section in another | |
6366 | bfd, or is weak. It's also possible that we are | |
6367 | discarding the function due to a linker script /DISCARD/, | |
6368 | which we test for via the output_section. */ | |
6369 | if (sym_sec->owner != ibfd | |
6370 | || sym_sec->output_section == bfd_abs_section_ptr) | |
b34976b6 | 6371 | need_edit = TRUE; |
1e2f5b6e | 6372 | |
50bc7936 | 6373 | rel += 2; |
3f764659 JJ |
6374 | if (rel == relend |
6375 | || (rel + 1 == relend && rel->r_offset == offset + 16)) | |
6376 | { | |
6377 | if (sec->size == offset + 24) | |
6378 | { | |
6379 | need_pad = NULL; | |
6380 | break; | |
6381 | } | |
6382 | if (rel == relend && sec->size == offset + 16) | |
6383 | { | |
6384 | cnt_16b++; | |
6385 | break; | |
6386 | } | |
6387 | goto broken_opd; | |
6388 | } | |
6389 | ||
6390 | if (rel->r_offset == offset + 24) | |
6391 | offset += 24; | |
6392 | else if (rel->r_offset != offset + 16) | |
6393 | goto broken_opd; | |
6394 | else if (rel + 1 < relend | |
6395 | && ELF64_R_TYPE (rel[0].r_info) == R_PPC64_ADDR64 | |
6396 | && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOC) | |
6397 | { | |
6398 | offset += 16; | |
6399 | cnt_16b++; | |
6400 | } | |
6401 | else if (rel + 2 < relend | |
6402 | && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_ADDR64 | |
6403 | && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_TOC) | |
6404 | { | |
6405 | offset += 24; | |
6406 | rel += 1; | |
6407 | } | |
6408 | else | |
6409 | goto broken_opd; | |
1e2f5b6e AM |
6410 | } |
6411 | ||
3f764659 JJ |
6412 | add_aux_fields = non_overlapping && cnt_16b > 0; |
6413 | ||
6414 | if (need_edit || add_aux_fields) | |
1e2f5b6e AM |
6415 | { |
6416 | Elf_Internal_Rela *write_rel; | |
6417 | bfd_byte *rptr, *wptr; | |
3f764659 | 6418 | bfd_byte *new_contents = NULL; |
b34976b6 | 6419 | bfd_boolean skip; |
3f764659 | 6420 | long opd_ent_size; |
1e2f5b6e AM |
6421 | |
6422 | /* This seems a waste of time as input .opd sections are all | |
6423 | zeros as generated by gcc, but I suppose there's no reason | |
6424 | this will always be so. We might start putting something in | |
6425 | the third word of .opd entries. */ | |
6426 | if ((sec->flags & SEC_IN_MEMORY) == 0) | |
6427 | { | |
eea6121a AM |
6428 | bfd_byte *loc; |
6429 | if (!bfd_malloc_and_get_section (ibfd, sec, &loc)) | |
6cdc0ccc | 6430 | { |
eea6121a AM |
6431 | if (loc != NULL) |
6432 | free (loc); | |
50bc7936 | 6433 | error_ret: |
6cdc0ccc AM |
6434 | if (local_syms != NULL |
6435 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
6436 | free (local_syms); | |
6cdc0ccc AM |
6437 | if (elf_section_data (sec)->relocs != relstart) |
6438 | free (relstart); | |
b34976b6 | 6439 | return FALSE; |
6cdc0ccc | 6440 | } |
1e2f5b6e AM |
6441 | sec->contents = loc; |
6442 | sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS); | |
6443 | } | |
6444 | ||
6445 | elf_section_data (sec)->relocs = relstart; | |
6446 | ||
3f764659 | 6447 | new_contents = sec->contents; |
3f764659 JJ |
6448 | if (add_aux_fields) |
6449 | { | |
6450 | new_contents = bfd_malloc (sec->size + cnt_16b * 8); | |
6451 | if (new_contents == NULL) | |
6452 | return FALSE; | |
6453 | need_pad = FALSE; | |
3f764659 | 6454 | } |
b4f4e59f AM |
6455 | wptr = new_contents; |
6456 | rptr = sec->contents; | |
3f764659 | 6457 | |
1e2f5b6e | 6458 | write_rel = relstart; |
b34976b6 | 6459 | skip = FALSE; |
1e2f5b6e | 6460 | offset = 0; |
3f764659 | 6461 | opd_ent_size = 0; |
1e2f5b6e AM |
6462 | for (rel = relstart; rel < relend; rel++) |
6463 | { | |
50bc7936 AM |
6464 | unsigned long r_symndx; |
6465 | asection *sym_sec; | |
6466 | struct elf_link_hash_entry *h; | |
6467 | Elf_Internal_Sym *sym; | |
6468 | ||
6469 | r_symndx = ELF64_R_SYM (rel->r_info); | |
6470 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
d37c89e5 | 6471 | r_symndx, ibfd)) |
50bc7936 AM |
6472 | goto error_ret; |
6473 | ||
1e2f5b6e AM |
6474 | if (rel->r_offset == offset) |
6475 | { | |
50bc7936 | 6476 | struct ppc_link_hash_entry *fdh = NULL; |
3f764659 JJ |
6477 | |
6478 | /* See if the .opd entry is full 24 byte or | |
6479 | 16 byte (with fd_aux entry overlapped with next | |
6480 | fd_func). */ | |
6481 | opd_ent_size = 24; | |
6482 | if ((rel + 2 == relend && sec->size == offset + 16) | |
6483 | || (rel + 3 < relend | |
6484 | && rel[2].r_offset == offset + 16 | |
6485 | && rel[3].r_offset == offset + 24 | |
6486 | && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_ADDR64 | |
6487 | && ELF64_R_TYPE (rel[3].r_info) == R_PPC64_TOC)) | |
6488 | opd_ent_size = 16; | |
6489 | ||
4025353c AM |
6490 | if (h != NULL |
6491 | && h->root.root.string[0] == '.') | |
c4f68ce3 AM |
6492 | { |
6493 | fdh = get_fdh ((struct ppc_link_hash_entry *) h, | |
6494 | ppc_hash_table (info)); | |
6495 | if (fdh != NULL | |
6496 | && fdh->elf.root.type != bfd_link_hash_defined | |
6497 | && fdh->elf.root.type != bfd_link_hash_defweak) | |
6498 | fdh = NULL; | |
6499 | } | |
1e2f5b6e | 6500 | |
51020317 AM |
6501 | skip = (sym_sec->owner != ibfd |
6502 | || sym_sec->output_section == bfd_abs_section_ptr); | |
a4aa0fb7 AM |
6503 | if (skip) |
6504 | { | |
4025353c | 6505 | if (fdh != NULL && sym_sec->owner == ibfd) |
a4aa0fb7 AM |
6506 | { |
6507 | /* Arrange for the function descriptor sym | |
6508 | to be dropped. */ | |
d6fe2dc1 AM |
6509 | fdh->elf.root.u.def.value = 0; |
6510 | fdh->elf.root.u.def.section = sym_sec; | |
a4aa0fb7 | 6511 | } |
3f764659 | 6512 | opd_adjust[rel->r_offset / 8] = -1; |
a4aa0fb7 AM |
6513 | } |
6514 | else | |
1e2f5b6e AM |
6515 | { |
6516 | /* We'll be keeping this opd entry. */ | |
6517 | ||
4025353c | 6518 | if (fdh != NULL) |
1e2f5b6e | 6519 | { |
754021d0 AM |
6520 | /* Redefine the function descriptor symbol to |
6521 | this location in the opd section. It is | |
6522 | necessary to update the value here rather | |
6523 | than using an array of adjustments as we do | |
6524 | for local symbols, because various places | |
6525 | in the generic ELF code use the value | |
6526 | stored in u.def.value. */ | |
3f764659 | 6527 | fdh->elf.root.u.def.value = wptr - new_contents; |
754021d0 | 6528 | fdh->adjust_done = 1; |
1e2f5b6e | 6529 | } |
754021d0 AM |
6530 | |
6531 | /* Local syms are a bit tricky. We could | |
6532 | tweak them as they can be cached, but | |
6533 | we'd need to look through the local syms | |
6534 | for the function descriptor sym which we | |
6535 | don't have at the moment. So keep an | |
6536 | array of adjustments. */ | |
3f764659 JJ |
6537 | opd_adjust[rel->r_offset / 8] |
6538 | = (wptr - new_contents) - (rptr - sec->contents); | |
1e2f5b6e AM |
6539 | |
6540 | if (wptr != rptr) | |
3f764659 JJ |
6541 | memcpy (wptr, rptr, opd_ent_size); |
6542 | wptr += opd_ent_size; | |
6543 | if (add_aux_fields && opd_ent_size == 16) | |
6544 | { | |
6545 | memset (wptr, '\0', 8); | |
6546 | wptr += 8; | |
6547 | } | |
1e2f5b6e | 6548 | } |
3f764659 JJ |
6549 | rptr += opd_ent_size; |
6550 | offset += opd_ent_size; | |
1e2f5b6e AM |
6551 | } |
6552 | ||
50bc7936 AM |
6553 | if (skip) |
6554 | { | |
60124e18 AM |
6555 | if (!NO_OPD_RELOCS |
6556 | && !info->relocatable | |
18d944df AM |
6557 | && !dec_dynrel_count (rel->r_info, sec, info, |
6558 | NULL, h, sym_sec)) | |
8c1d1bb8 | 6559 | goto error_ret; |
50bc7936 AM |
6560 | } |
6561 | else | |
1e2f5b6e | 6562 | { |
50bc7936 AM |
6563 | /* We need to adjust any reloc offsets to point to the |
6564 | new opd entries. While we're at it, we may as well | |
6565 | remove redundant relocs. */ | |
3f764659 | 6566 | rel->r_offset += opd_adjust[(offset - opd_ent_size) / 8]; |
1e2f5b6e AM |
6567 | if (write_rel != rel) |
6568 | memcpy (write_rel, rel, sizeof (*rel)); | |
6569 | ++write_rel; | |
6570 | } | |
6571 | } | |
6572 | ||
3f764659 | 6573 | sec->size = wptr - new_contents; |
1e2f5b6e | 6574 | sec->reloc_count = write_rel - relstart; |
3f764659 JJ |
6575 | if (add_aux_fields) |
6576 | { | |
6577 | free (sec->contents); | |
6578 | sec->contents = new_contents; | |
6579 | } | |
6580 | ||
cdcf6e38 AM |
6581 | /* Fudge the size too, as this is used later in |
6582 | elf_bfd_final_link if we are emitting relocs. */ | |
6583 | elf_section_data (sec)->rel_hdr.sh_size | |
6584 | = sec->reloc_count * elf_section_data (sec)->rel_hdr.sh_entsize; | |
6585 | BFD_ASSERT (elf_section_data (sec)->rel_hdr2 == NULL); | |
754021d0 | 6586 | some_edited = TRUE; |
1e2f5b6e | 6587 | } |
6cdc0ccc | 6588 | else if (elf_section_data (sec)->relocs != relstart) |
1e2f5b6e | 6589 | free (relstart); |
6cdc0ccc | 6590 | |
411e1bfb AM |
6591 | if (local_syms != NULL |
6592 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
6593 | { | |
6594 | if (!info->keep_memory) | |
6595 | free (local_syms); | |
6596 | else | |
6597 | symtab_hdr->contents = (unsigned char *) local_syms; | |
6598 | } | |
6599 | } | |
6600 | ||
754021d0 AM |
6601 | if (some_edited) |
6602 | elf_link_hash_traverse (elf_hash_table (info), adjust_opd_syms, NULL); | |
6603 | ||
3f764659 JJ |
6604 | /* If we are doing a final link and the last .opd entry is just 16 byte |
6605 | long, add a 8 byte padding after it. */ | |
6606 | if (need_pad != NULL && !info->relocatable) | |
6607 | { | |
6608 | bfd_byte *p; | |
6609 | ||
6610 | if ((need_pad->flags & SEC_IN_MEMORY) == 0) | |
6611 | { | |
6612 | BFD_ASSERT (need_pad->size > 0); | |
6613 | ||
6614 | p = bfd_malloc (need_pad->size + 8); | |
6615 | if (p == NULL) | |
6616 | return FALSE; | |
699733f6 | 6617 | |
3f764659 JJ |
6618 | if (! bfd_get_section_contents (need_pad->owner, need_pad, |
6619 | p, 0, need_pad->size)) | |
6620 | return FALSE; | |
6621 | ||
6622 | need_pad->contents = p; | |
6623 | need_pad->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS); | |
6624 | } | |
6625 | else | |
6626 | { | |
6627 | p = bfd_realloc (need_pad->contents, need_pad->size + 8); | |
6628 | if (p == NULL) | |
6629 | return FALSE; | |
6630 | ||
6631 | need_pad->contents = p; | |
6632 | } | |
6633 | ||
6634 | memset (need_pad->contents + need_pad->size, 0, 8); | |
6635 | need_pad->size += 8; | |
6636 | } | |
6637 | ||
411e1bfb AM |
6638 | return TRUE; |
6639 | } | |
6640 | ||
e1918d23 | 6641 | /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */ |
411e1bfb | 6642 | |
e1918d23 | 6643 | asection * |
4ce794b7 | 6644 | ppc64_elf_tls_setup (bfd *obfd, struct bfd_link_info *info) |
411e1bfb | 6645 | { |
411e1bfb AM |
6646 | struct ppc_link_hash_table *htab; |
6647 | ||
411e1bfb | 6648 | htab = ppc_hash_table (info); |
a48ebf4d AM |
6649 | if (htab->tls_get_addr != NULL) |
6650 | { | |
8387904d | 6651 | struct ppc_link_hash_entry *h = htab->tls_get_addr; |
a48ebf4d | 6652 | |
8387904d AM |
6653 | while (h->elf.root.type == bfd_link_hash_indirect |
6654 | || h->elf.root.type == bfd_link_hash_warning) | |
6655 | h = (struct ppc_link_hash_entry *) h->elf.root.u.i.link; | |
a48ebf4d AM |
6656 | |
6657 | htab->tls_get_addr = h; | |
8387904d AM |
6658 | |
6659 | if (htab->tls_get_addr_fd == NULL | |
6660 | && h->oh != NULL | |
c4f68ce3 AM |
6661 | && h->oh->is_func_descriptor |
6662 | && (h->oh->elf.root.type == bfd_link_hash_defined | |
6663 | || h->oh->elf.root.type == bfd_link_hash_defweak)) | |
8387904d AM |
6664 | htab->tls_get_addr_fd = h->oh; |
6665 | } | |
6666 | ||
6667 | if (htab->tls_get_addr_fd != NULL) | |
6668 | { | |
6669 | struct ppc_link_hash_entry *h = htab->tls_get_addr_fd; | |
6670 | ||
6671 | while (h->elf.root.type == bfd_link_hash_indirect | |
6672 | || h->elf.root.type == bfd_link_hash_warning) | |
6673 | h = (struct ppc_link_hash_entry *) h->elf.root.u.i.link; | |
6674 | ||
6675 | htab->tls_get_addr_fd = h; | |
a48ebf4d AM |
6676 | } |
6677 | ||
e1918d23 | 6678 | return _bfd_elf_tls_setup (obfd, info); |
951fd09b | 6679 | } |
411e1bfb | 6680 | |
951fd09b AM |
6681 | /* Run through all the TLS relocs looking for optimization |
6682 | opportunities. The linker has been hacked (see ppc64elf.em) to do | |
6683 | a preliminary section layout so that we know the TLS segment | |
6684 | offsets. We can't optimize earlier because some optimizations need | |
6685 | to know the tp offset, and we need to optimize before allocating | |
6686 | dynamic relocations. */ | |
6687 | ||
6688 | bfd_boolean | |
4ce794b7 | 6689 | ppc64_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED, struct bfd_link_info *info) |
951fd09b AM |
6690 | { |
6691 | bfd *ibfd; | |
6692 | asection *sec; | |
6693 | struct ppc_link_hash_table *htab; | |
6694 | ||
1049f94e | 6695 | if (info->relocatable || info->shared) |
411e1bfb AM |
6696 | return TRUE; |
6697 | ||
951fd09b | 6698 | htab = ppc_hash_table (info); |
411e1bfb AM |
6699 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) |
6700 | { | |
6701 | Elf_Internal_Sym *locsyms = NULL; | |
30038c59 AM |
6702 | asection *toc = bfd_get_section_by_name (ibfd, ".toc"); |
6703 | unsigned char *toc_ref = NULL; | |
411e1bfb | 6704 | |
30038c59 AM |
6705 | /* Look at all the sections for this file, with TOC last. */ |
6706 | for (sec = (ibfd->sections == toc && toc && toc->next ? toc->next | |
6707 | : ibfd->sections); | |
6708 | sec != NULL; | |
6709 | sec = (sec == toc ? NULL | |
6710 | : sec->next == NULL ? toc | |
6711 | : sec->next == toc && toc->next ? toc->next | |
6712 | : sec->next)) | |
411e1bfb AM |
6713 | if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section)) |
6714 | { | |
6715 | Elf_Internal_Rela *relstart, *rel, *relend; | |
6716 | int expecting_tls_get_addr; | |
30038c59 | 6717 | long toc_ref_index = 0; |
411e1bfb AM |
6718 | |
6719 | /* Read the relocations. */ | |
4ce794b7 | 6720 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, |
45d6a902 | 6721 | info->keep_memory); |
411e1bfb AM |
6722 | if (relstart == NULL) |
6723 | return FALSE; | |
6724 | ||
6725 | expecting_tls_get_addr = 0; | |
6726 | relend = relstart + sec->reloc_count; | |
6727 | for (rel = relstart; rel < relend; rel++) | |
6728 | { | |
6729 | enum elf_ppc64_reloc_type r_type; | |
6730 | unsigned long r_symndx; | |
6731 | struct elf_link_hash_entry *h; | |
6732 | Elf_Internal_Sym *sym; | |
6733 | asection *sym_sec; | |
e7b938ca AM |
6734 | char *tls_mask; |
6735 | char tls_set, tls_clear, tls_type = 0; | |
411e1bfb | 6736 | bfd_vma value; |
951fd09b | 6737 | bfd_boolean ok_tprel, is_local; |
411e1bfb AM |
6738 | |
6739 | r_symndx = ELF64_R_SYM (rel->r_info); | |
e7b938ca | 6740 | if (!get_sym_h (&h, &sym, &sym_sec, &tls_mask, &locsyms, |
411e1bfb AM |
6741 | r_symndx, ibfd)) |
6742 | { | |
6743 | err_free_rel: | |
6744 | if (elf_section_data (sec)->relocs != relstart) | |
6745 | free (relstart); | |
30038c59 AM |
6746 | if (toc_ref != NULL) |
6747 | free (toc_ref); | |
411e1bfb AM |
6748 | if (locsyms != NULL |
6749 | && (elf_tdata (ibfd)->symtab_hdr.contents | |
6750 | != (unsigned char *) locsyms)) | |
6751 | free (locsyms); | |
6752 | return FALSE; | |
6753 | } | |
6754 | ||
6755 | if (h != NULL) | |
6756 | { | |
6757 | if (h->root.type != bfd_link_hash_defined | |
6758 | && h->root.type != bfd_link_hash_defweak) | |
6759 | continue; | |
6760 | value = h->root.u.def.value; | |
6761 | } | |
6762 | else | |
4025353c AM |
6763 | /* Symbols referenced by TLS relocs must be of type |
6764 | STT_TLS. So no need for .opd local sym adjust. */ | |
6765 | value = sym->st_value; | |
951fd09b | 6766 | |
411e1bfb | 6767 | ok_tprel = FALSE; |
951fd09b AM |
6768 | is_local = FALSE; |
6769 | if (h == NULL | |
f5385ebf | 6770 | || !h->def_dynamic) |
411e1bfb | 6771 | { |
951fd09b | 6772 | is_local = TRUE; |
411e1bfb AM |
6773 | value += sym_sec->output_offset; |
6774 | value += sym_sec->output_section->vma; | |
e1918d23 | 6775 | value -= htab->elf.tls_sec->vma; |
411e1bfb AM |
6776 | ok_tprel = (value + TP_OFFSET + ((bfd_vma) 1 << 31) |
6777 | < (bfd_vma) 1 << 32); | |
6778 | } | |
6779 | ||
4ce794b7 | 6780 | r_type = ELF64_R_TYPE (rel->r_info); |
411e1bfb AM |
6781 | switch (r_type) |
6782 | { | |
6783 | case R_PPC64_GOT_TLSLD16: | |
6784 | case R_PPC64_GOT_TLSLD16_LO: | |
6785 | case R_PPC64_GOT_TLSLD16_HI: | |
6786 | case R_PPC64_GOT_TLSLD16_HA: | |
951fd09b AM |
6787 | /* These relocs should never be against a symbol |
6788 | defined in a shared lib. Leave them alone if | |
6789 | that turns out to be the case. */ | |
e717da7e | 6790 | ppc64_tlsld_got (ibfd)->refcount -= 1; |
951fd09b AM |
6791 | if (!is_local) |
6792 | continue; | |
6793 | ||
951fd09b AM |
6794 | /* LD -> LE */ |
6795 | tls_set = 0; | |
6796 | tls_clear = TLS_LD; | |
e7b938ca | 6797 | tls_type = TLS_TLS | TLS_LD; |
411e1bfb AM |
6798 | expecting_tls_get_addr = 1; |
6799 | break; | |
6800 | ||
6801 | case R_PPC64_GOT_TLSGD16: | |
6802 | case R_PPC64_GOT_TLSGD16_LO: | |
6803 | case R_PPC64_GOT_TLSGD16_HI: | |
6804 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b | 6805 | if (ok_tprel) |
411e1bfb AM |
6806 | /* GD -> LE */ |
6807 | tls_set = 0; | |
6808 | else | |
6809 | /* GD -> IE */ | |
951fd09b AM |
6810 | tls_set = TLS_TLS | TLS_TPRELGD; |
6811 | tls_clear = TLS_GD; | |
e7b938ca | 6812 | tls_type = TLS_TLS | TLS_GD; |
411e1bfb AM |
6813 | expecting_tls_get_addr = 1; |
6814 | break; | |
6815 | ||
6816 | case R_PPC64_GOT_TPREL16_DS: | |
6817 | case R_PPC64_GOT_TPREL16_LO_DS: | |
6818 | case R_PPC64_GOT_TPREL16_HI: | |
6819 | case R_PPC64_GOT_TPREL16_HA: | |
6820 | expecting_tls_get_addr = 0; | |
6821 | if (ok_tprel) | |
6822 | { | |
6823 | /* IE -> LE */ | |
6824 | tls_set = 0; | |
6825 | tls_clear = TLS_TPREL; | |
e7b938ca | 6826 | tls_type = TLS_TLS | TLS_TPREL; |
411e1bfb AM |
6827 | break; |
6828 | } | |
6829 | else | |
6830 | continue; | |
6831 | ||
6832 | case R_PPC64_REL14: | |
6833 | case R_PPC64_REL14_BRTAKEN: | |
6834 | case R_PPC64_REL14_BRNTAKEN: | |
6835 | case R_PPC64_REL24: | |
6836 | if (h != NULL | |
8387904d AM |
6837 | && (h == &htab->tls_get_addr->elf |
6838 | || h == &htab->tls_get_addr_fd->elf)) | |
411e1bfb AM |
6839 | { |
6840 | if (!expecting_tls_get_addr | |
6841 | && rel != relstart | |
6842 | && ((ELF64_R_TYPE (rel[-1].r_info) | |
6843 | == R_PPC64_TOC16) | |
6844 | || (ELF64_R_TYPE (rel[-1].r_info) | |
6845 | == R_PPC64_TOC16_LO))) | |
6846 | { | |
6847 | /* Check for toc tls entries. */ | |
6848 | char *toc_tls; | |
951fd09b | 6849 | int retval; |
411e1bfb | 6850 | |
0d4792f7 | 6851 | retval = get_tls_mask (&toc_tls, NULL, &locsyms, |
951fd09b AM |
6852 | rel - 1, ibfd); |
6853 | if (retval == 0) | |
411e1bfb | 6854 | goto err_free_rel; |
30038c59 AM |
6855 | if (retval > 1 && toc_tls != NULL) |
6856 | { | |
6857 | expecting_tls_get_addr = 1; | |
6858 | if (toc_ref != NULL) | |
6859 | toc_ref[toc_ref_index] = 1; | |
6860 | } | |
411e1bfb AM |
6861 | } |
6862 | ||
6863 | if (expecting_tls_get_addr) | |
6864 | { | |
6865 | struct plt_entry *ent; | |
6866 | for (ent = h->plt.plist; ent; ent = ent->next) | |
6867 | if (ent->addend == 0) | |
6868 | { | |
6869 | if (ent->plt.refcount > 0) | |
6870 | ent->plt.refcount -= 1; | |
6871 | break; | |
6872 | } | |
6873 | } | |
6874 | } | |
6875 | expecting_tls_get_addr = 0; | |
6876 | continue; | |
6877 | ||
30038c59 AM |
6878 | case R_PPC64_TOC16: |
6879 | case R_PPC64_TOC16_LO: | |
6880 | case R_PPC64_TLS: | |
6881 | expecting_tls_get_addr = 0; | |
6882 | if (sym_sec == toc && toc != NULL) | |
6883 | { | |
6884 | /* Mark this toc entry as referenced by a TLS | |
6885 | code sequence. We can do that now in the | |
6886 | case of R_PPC64_TLS, and after checking for | |
6887 | tls_get_addr for the TOC16 relocs. */ | |
6888 | if (toc_ref == NULL) | |
6889 | { | |
6890 | toc_ref = bfd_zmalloc (toc->size / 8); | |
6891 | if (toc_ref == NULL) | |
6892 | goto err_free_rel; | |
6893 | } | |
6894 | if (h != NULL) | |
6895 | value = h->root.u.def.value; | |
6896 | else | |
6897 | value = sym->st_value; | |
6898 | value += rel->r_addend; | |
6899 | BFD_ASSERT (value < toc->size && value % 8 == 0); | |
6900 | toc_ref_index = value / 8; | |
6901 | if (r_type == R_PPC64_TLS) | |
6902 | toc_ref[toc_ref_index] = 1; | |
6903 | } | |
6904 | continue; | |
6905 | ||
411e1bfb AM |
6906 | case R_PPC64_TPREL64: |
6907 | expecting_tls_get_addr = 0; | |
30038c59 AM |
6908 | if (sec != toc |
6909 | || toc_ref == NULL | |
6910 | || !toc_ref[rel->r_offset / 8]) | |
6911 | continue; | |
411e1bfb AM |
6912 | if (ok_tprel) |
6913 | { | |
6914 | /* IE -> LE */ | |
6915 | tls_set = TLS_EXPLICIT; | |
6916 | tls_clear = TLS_TPREL; | |
6917 | break; | |
6918 | } | |
6919 | else | |
6920 | continue; | |
6921 | ||
6922 | case R_PPC64_DTPMOD64: | |
6923 | expecting_tls_get_addr = 0; | |
30038c59 AM |
6924 | if (sec != toc |
6925 | || toc_ref == NULL | |
6926 | || !toc_ref[rel->r_offset / 8]) | |
6927 | continue; | |
951fd09b AM |
6928 | if (rel + 1 < relend |
6929 | && (rel[1].r_info | |
6930 | == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)) | |
6931 | && rel[1].r_offset == rel->r_offset + 8) | |
411e1bfb | 6932 | { |
951fd09b | 6933 | if (ok_tprel) |
411e1bfb | 6934 | /* GD -> LE */ |
951fd09b | 6935 | tls_set = TLS_EXPLICIT | TLS_GD; |
411e1bfb AM |
6936 | else |
6937 | /* GD -> IE */ | |
951fd09b AM |
6938 | tls_set = TLS_EXPLICIT | TLS_GD | TLS_TPRELGD; |
6939 | tls_clear = TLS_GD; | |
411e1bfb AM |
6940 | } |
6941 | else | |
6942 | { | |
951fd09b AM |
6943 | if (!is_local) |
6944 | continue; | |
6945 | ||
6946 | /* LD -> LE */ | |
6947 | tls_set = TLS_EXPLICIT; | |
6948 | tls_clear = TLS_LD; | |
411e1bfb AM |
6949 | } |
6950 | break; | |
6951 | ||
6952 | default: | |
6953 | expecting_tls_get_addr = 0; | |
6954 | continue; | |
6955 | } | |
6956 | ||
6957 | if ((tls_set & TLS_EXPLICIT) == 0) | |
6958 | { | |
6959 | struct got_entry *ent; | |
6960 | ||
6961 | /* Adjust got entry for this reloc. */ | |
6962 | if (h != NULL) | |
6963 | ent = h->got.glist; | |
6964 | else | |
6965 | ent = elf_local_got_ents (ibfd)[r_symndx]; | |
6966 | ||
6967 | for (; ent != NULL; ent = ent->next) | |
6968 | if (ent->addend == rel->r_addend | |
e717da7e | 6969 | && ent->owner == ibfd |
e7b938ca | 6970 | && ent->tls_type == tls_type) |
411e1bfb AM |
6971 | break; |
6972 | if (ent == NULL) | |
6973 | abort (); | |
6974 | ||
6975 | if (tls_set == 0) | |
6976 | { | |
6977 | /* We managed to get rid of a got entry. */ | |
6978 | if (ent->got.refcount > 0) | |
6979 | ent->got.refcount -= 1; | |
6980 | } | |
411e1bfb | 6981 | } |
8c1d1bb8 | 6982 | else |
411e1bfb | 6983 | { |
8c1d1bb8 AM |
6984 | /* If we got rid of a DTPMOD/DTPREL reloc pair then |
6985 | we'll lose one or two dyn relocs. */ | |
6986 | if (!dec_dynrel_count (rel->r_info, sec, info, | |
6987 | NULL, h, sym_sec)) | |
6988 | return FALSE; | |
6989 | ||
6990 | if (tls_set == (TLS_EXPLICIT | TLS_GD)) | |
6991 | { | |
6992 | if (!dec_dynrel_count ((rel + 1)->r_info, sec, info, | |
6993 | NULL, h, sym_sec)) | |
6994 | return FALSE; | |
6995 | } | |
411e1bfb AM |
6996 | } |
6997 | ||
e7b938ca AM |
6998 | *tls_mask |= tls_set; |
6999 | *tls_mask &= ~tls_clear; | |
411e1bfb AM |
7000 | } |
7001 | ||
7002 | if (elf_section_data (sec)->relocs != relstart) | |
7003 | free (relstart); | |
7004 | } | |
7005 | ||
30038c59 AM |
7006 | if (toc_ref != NULL) |
7007 | free (toc_ref); | |
7008 | ||
411e1bfb AM |
7009 | if (locsyms != NULL |
7010 | && (elf_tdata (ibfd)->symtab_hdr.contents | |
7011 | != (unsigned char *) locsyms)) | |
6cdc0ccc AM |
7012 | { |
7013 | if (!info->keep_memory) | |
411e1bfb | 7014 | free (locsyms); |
6cdc0ccc | 7015 | else |
411e1bfb | 7016 | elf_tdata (ibfd)->symtab_hdr.contents = (unsigned char *) locsyms; |
6cdc0ccc | 7017 | } |
1e2f5b6e | 7018 | } |
b34976b6 | 7019 | return TRUE; |
1e2f5b6e | 7020 | } |
b34976b6 | 7021 | |
c5614fa4 AM |
7022 | /* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust |
7023 | the values of any global symbols in a toc section that has been | |
7024 | edited. Globals in toc sections should be a rarity, so this function | |
7025 | sets a flag if any are found in toc sections other than the one just | |
7026 | edited, so that futher hash table traversals can be avoided. */ | |
7027 | ||
7028 | struct adjust_toc_info | |
7029 | { | |
7030 | asection *toc; | |
7031 | unsigned long *skip; | |
7032 | bfd_boolean global_toc_syms; | |
7033 | }; | |
7034 | ||
7035 | static bfd_boolean | |
7036 | adjust_toc_syms (struct elf_link_hash_entry *h, void *inf) | |
7037 | { | |
7038 | struct ppc_link_hash_entry *eh; | |
7039 | struct adjust_toc_info *toc_inf = (struct adjust_toc_info *) inf; | |
7040 | ||
7041 | if (h->root.type == bfd_link_hash_indirect) | |
7042 | return TRUE; | |
7043 | ||
7044 | if (h->root.type == bfd_link_hash_warning) | |
7045 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
7046 | ||
7047 | if (h->root.type != bfd_link_hash_defined | |
7048 | && h->root.type != bfd_link_hash_defweak) | |
7049 | return TRUE; | |
7050 | ||
7051 | eh = (struct ppc_link_hash_entry *) h; | |
7052 | if (eh->adjust_done) | |
7053 | return TRUE; | |
7054 | ||
7055 | if (eh->elf.root.u.def.section == toc_inf->toc) | |
7056 | { | |
7057 | unsigned long skip = toc_inf->skip[eh->elf.root.u.def.value >> 3]; | |
7058 | if (skip != (unsigned long) -1) | |
7059 | eh->elf.root.u.def.value -= skip; | |
7060 | else | |
7061 | { | |
7062 | (*_bfd_error_handler) | |
7063 | (_("%s defined in removed toc entry"), eh->elf.root.root.string); | |
7064 | eh->elf.root.u.def.section = &bfd_abs_section; | |
7065 | eh->elf.root.u.def.value = 0; | |
7066 | } | |
7067 | eh->adjust_done = 1; | |
7068 | } | |
7069 | else if (strcmp (eh->elf.root.u.def.section->name, ".toc") == 0) | |
7070 | toc_inf->global_toc_syms = TRUE; | |
7071 | ||
7072 | return TRUE; | |
7073 | } | |
7074 | ||
7075 | /* Examine all relocs referencing .toc sections in order to remove | |
7076 | unused .toc entries. */ | |
7077 | ||
7078 | bfd_boolean | |
7079 | ppc64_elf_edit_toc (bfd *obfd ATTRIBUTE_UNUSED, struct bfd_link_info *info) | |
7080 | { | |
7081 | bfd *ibfd; | |
7082 | struct adjust_toc_info toc_inf; | |
7083 | ||
7084 | toc_inf.global_toc_syms = TRUE; | |
7085 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
7086 | { | |
7087 | asection *toc, *sec; | |
7088 | Elf_Internal_Shdr *symtab_hdr; | |
7089 | Elf_Internal_Sym *local_syms; | |
7090 | struct elf_link_hash_entry **sym_hashes; | |
92b7a70f | 7091 | Elf_Internal_Rela *relstart, *rel; |
c5614fa4 AM |
7092 | unsigned long *skip, *drop; |
7093 | unsigned char *used; | |
7094 | unsigned char *keep, last, some_unused; | |
7095 | ||
7096 | toc = bfd_get_section_by_name (ibfd, ".toc"); | |
7097 | if (toc == NULL | |
92b7a70f | 7098 | || toc->size == 0 |
c5614fa4 AM |
7099 | || toc->sec_info_type == ELF_INFO_TYPE_JUST_SYMS |
7100 | || elf_discarded_section (toc)) | |
7101 | continue; | |
7102 | ||
7103 | local_syms = NULL; | |
7104 | symtab_hdr = &elf_tdata (ibfd)->symtab_hdr; | |
7105 | sym_hashes = elf_sym_hashes (ibfd); | |
7106 | ||
7107 | /* Look at sections dropped from the final link. */ | |
7108 | skip = NULL; | |
7109 | relstart = NULL; | |
7110 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
7111 | { | |
7112 | if (sec->reloc_count == 0 | |
7113 | || !elf_discarded_section (sec) | |
7114 | || get_opd_info (sec) | |
7115 | || (sec->flags & SEC_ALLOC) == 0 | |
7116 | || (sec->flags & SEC_DEBUGGING) != 0) | |
7117 | continue; | |
7118 | ||
7119 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, FALSE); | |
7120 | if (relstart == NULL) | |
7121 | goto error_ret; | |
7122 | ||
7123 | /* Run through the relocs to see which toc entries might be | |
7124 | unused. */ | |
7125 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
7126 | { | |
7127 | enum elf_ppc64_reloc_type r_type; | |
7128 | unsigned long r_symndx; | |
7129 | asection *sym_sec; | |
7130 | struct elf_link_hash_entry *h; | |
7131 | Elf_Internal_Sym *sym; | |
7132 | bfd_vma val; | |
7133 | ||
7134 | r_type = ELF64_R_TYPE (rel->r_info); | |
7135 | switch (r_type) | |
7136 | { | |
7137 | default: | |
7138 | continue; | |
7139 | ||
7140 | case R_PPC64_TOC16: | |
7141 | case R_PPC64_TOC16_LO: | |
7142 | case R_PPC64_TOC16_HI: | |
7143 | case R_PPC64_TOC16_HA: | |
7144 | case R_PPC64_TOC16_DS: | |
7145 | case R_PPC64_TOC16_LO_DS: | |
7146 | break; | |
7147 | } | |
7148 | ||
7149 | r_symndx = ELF64_R_SYM (rel->r_info); | |
7150 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
7151 | r_symndx, ibfd)) | |
7152 | goto error_ret; | |
7153 | ||
7154 | if (sym_sec != toc) | |
7155 | continue; | |
7156 | ||
7157 | if (h != NULL) | |
7158 | val = h->root.u.def.value; | |
7159 | else | |
7160 | val = sym->st_value; | |
7161 | val += rel->r_addend; | |
7162 | ||
7163 | if (val >= toc->size) | |
7164 | continue; | |
7165 | ||
7166 | /* Anything in the toc ought to be aligned to 8 bytes. | |
7167 | If not, don't mark as unused. */ | |
7168 | if (val & 7) | |
7169 | continue; | |
7170 | ||
7171 | if (skip == NULL) | |
7172 | { | |
7173 | skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 7) / 8); | |
7174 | if (skip == NULL) | |
7175 | goto error_ret; | |
7176 | } | |
7177 | ||
7178 | skip[val >> 3] = 1; | |
7179 | } | |
7180 | ||
7181 | if (elf_section_data (sec)->relocs != relstart) | |
7182 | free (relstart); | |
7183 | } | |
7184 | ||
7185 | if (skip == NULL) | |
7186 | continue; | |
7187 | ||
7188 | used = bfd_zmalloc (sizeof (*used) * (toc->size + 7) / 8); | |
7189 | if (used == NULL) | |
7190 | { | |
7191 | error_ret: | |
7192 | if (local_syms != NULL | |
7193 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
7194 | free (local_syms); | |
7195 | if (sec != NULL | |
7196 | && relstart != NULL | |
7197 | && elf_section_data (sec)->relocs != relstart) | |
7198 | free (relstart); | |
7199 | if (skip != NULL) | |
7200 | free (skip); | |
7201 | return FALSE; | |
7202 | } | |
7203 | ||
30038c59 AM |
7204 | /* Now check all kept sections that might reference the toc. |
7205 | Check the toc itself last. */ | |
7206 | for (sec = (ibfd->sections == toc && toc->next ? toc->next | |
7207 | : ibfd->sections); | |
c5614fa4 | 7208 | sec != NULL; |
c5614fa4 | 7209 | sec = (sec == toc ? NULL |
c5614fa4 | 7210 | : sec->next == NULL ? toc |
30038c59 | 7211 | : sec->next == toc && toc->next ? toc->next |
c5614fa4 AM |
7212 | : sec->next)) |
7213 | { | |
7214 | int repeat; | |
7215 | ||
7216 | if (sec->reloc_count == 0 | |
7217 | || elf_discarded_section (sec) | |
7218 | || get_opd_info (sec) | |
7219 | || (sec->flags & SEC_ALLOC) == 0 | |
7220 | || (sec->flags & SEC_DEBUGGING) != 0) | |
7221 | continue; | |
7222 | ||
7223 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, TRUE); | |
7224 | if (relstart == NULL) | |
7225 | goto error_ret; | |
7226 | ||
7227 | /* Mark toc entries referenced as used. */ | |
7228 | repeat = 0; | |
7229 | do | |
7230 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
7231 | { | |
7232 | enum elf_ppc64_reloc_type r_type; | |
7233 | unsigned long r_symndx; | |
7234 | asection *sym_sec; | |
7235 | struct elf_link_hash_entry *h; | |
7236 | Elf_Internal_Sym *sym; | |
7237 | bfd_vma val; | |
7238 | ||
7239 | r_type = ELF64_R_TYPE (rel->r_info); | |
7240 | switch (r_type) | |
7241 | { | |
7242 | case R_PPC64_TOC16: | |
7243 | case R_PPC64_TOC16_LO: | |
7244 | case R_PPC64_TOC16_HI: | |
7245 | case R_PPC64_TOC16_HA: | |
7246 | case R_PPC64_TOC16_DS: | |
7247 | case R_PPC64_TOC16_LO_DS: | |
7248 | /* In case we're taking addresses of toc entries. */ | |
7249 | case R_PPC64_ADDR64: | |
7250 | break; | |
7251 | ||
7252 | default: | |
7253 | continue; | |
7254 | } | |
7255 | ||
7256 | r_symndx = ELF64_R_SYM (rel->r_info); | |
7257 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
7258 | r_symndx, ibfd)) | |
7259 | { | |
7260 | free (used); | |
7261 | goto error_ret; | |
7262 | } | |
7263 | ||
7264 | if (sym_sec != toc) | |
7265 | continue; | |
7266 | ||
7267 | if (h != NULL) | |
7268 | val = h->root.u.def.value; | |
7269 | else | |
7270 | val = sym->st_value; | |
7271 | val += rel->r_addend; | |
7272 | ||
7273 | if (val >= toc->size) | |
7274 | continue; | |
7275 | ||
7276 | /* For the toc section, we only mark as used if | |
7277 | this entry itself isn't unused. */ | |
7278 | if (sec == toc | |
7279 | && !used[val >> 3] | |
7280 | && (used[rel->r_offset >> 3] | |
7281 | || !skip[rel->r_offset >> 3])) | |
7282 | /* Do all the relocs again, to catch reference | |
7283 | chains. */ | |
7284 | repeat = 1; | |
7285 | ||
7286 | used[val >> 3] = 1; | |
7287 | } | |
7288 | while (repeat); | |
7289 | } | |
7290 | ||
7291 | /* Merge the used and skip arrays. Assume that TOC | |
7292 | doublewords not appearing as either used or unused belong | |
7293 | to to an entry more than one doubleword in size. */ | |
7294 | for (drop = skip, keep = used, last = 0, some_unused = 0; | |
7295 | drop < skip + (toc->size + 7) / 8; | |
7296 | ++drop, ++keep) | |
7297 | { | |
7298 | if (*keep) | |
7299 | { | |
7300 | *drop = 0; | |
7301 | last = 0; | |
7302 | } | |
7303 | else if (*drop) | |
7304 | { | |
7305 | some_unused = 1; | |
7306 | last = 1; | |
7307 | } | |
7308 | else | |
7309 | *drop = last; | |
7310 | } | |
7311 | ||
7312 | free (used); | |
7313 | ||
7314 | if (some_unused) | |
7315 | { | |
7316 | bfd_byte *contents, *src; | |
7317 | unsigned long off; | |
7318 | ||
7319 | /* Shuffle the toc contents, and at the same time convert the | |
7320 | skip array from booleans into offsets. */ | |
7321 | if (!bfd_malloc_and_get_section (ibfd, toc, &contents)) | |
7322 | goto error_ret; | |
7323 | ||
7324 | elf_section_data (toc)->this_hdr.contents = contents; | |
7325 | ||
7326 | for (src = contents, off = 0, drop = skip; | |
7327 | src < contents + toc->size; | |
7328 | src += 8, ++drop) | |
7329 | { | |
7330 | if (*drop) | |
7331 | { | |
7332 | *drop = (unsigned long) -1; | |
7333 | off += 8; | |
7334 | } | |
7335 | else if (off != 0) | |
7336 | { | |
7337 | *drop = off; | |
7338 | memcpy (src - off, src, 8); | |
7339 | } | |
7340 | } | |
7341 | toc->rawsize = toc->size; | |
7342 | toc->size = src - contents - off; | |
7343 | ||
92b7a70f AM |
7344 | if (toc->reloc_count != 0) |
7345 | { | |
7346 | Elf_Internal_Rela *wrel; | |
7347 | bfd_size_type sz; | |
c5614fa4 | 7348 | |
92b7a70f AM |
7349 | /* Read toc relocs. */ |
7350 | relstart = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL, | |
7351 | TRUE); | |
7352 | if (relstart == NULL) | |
7353 | goto error_ret; | |
7354 | ||
7355 | /* Remove unused toc relocs, and adjust those we keep. */ | |
7356 | wrel = relstart; | |
7357 | for (rel = relstart; rel < relstart + toc->reloc_count; ++rel) | |
7358 | if (skip[rel->r_offset >> 3] != (unsigned long) -1) | |
7359 | { | |
7360 | wrel->r_offset = rel->r_offset - skip[rel->r_offset >> 3]; | |
7361 | wrel->r_info = rel->r_info; | |
7362 | wrel->r_addend = rel->r_addend; | |
7363 | ++wrel; | |
7364 | } | |
8c1d1bb8 AM |
7365 | else if (!dec_dynrel_count (rel->r_info, toc, info, |
7366 | &local_syms, NULL, NULL)) | |
7367 | goto error_ret; | |
35090471 | 7368 | |
92b7a70f AM |
7369 | toc->reloc_count = wrel - relstart; |
7370 | sz = elf_section_data (toc)->rel_hdr.sh_entsize; | |
7371 | elf_section_data (toc)->rel_hdr.sh_size = toc->reloc_count * sz; | |
7372 | BFD_ASSERT (elf_section_data (toc)->rel_hdr2 == NULL); | |
7373 | } | |
c5614fa4 AM |
7374 | |
7375 | /* Adjust addends for relocs against the toc section sym. */ | |
7376 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
7377 | { | |
7378 | if (sec->reloc_count == 0 | |
7379 | || elf_discarded_section (sec)) | |
7380 | continue; | |
7381 | ||
7382 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, | |
7383 | TRUE); | |
7384 | if (relstart == NULL) | |
7385 | goto error_ret; | |
7386 | ||
7387 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
7388 | { | |
7389 | enum elf_ppc64_reloc_type r_type; | |
7390 | unsigned long r_symndx; | |
7391 | asection *sym_sec; | |
7392 | struct elf_link_hash_entry *h; | |
7393 | Elf_Internal_Sym *sym; | |
7394 | ||
7395 | r_type = ELF64_R_TYPE (rel->r_info); | |
7396 | switch (r_type) | |
7397 | { | |
7398 | default: | |
7399 | continue; | |
7400 | ||
7401 | case R_PPC64_TOC16: | |
7402 | case R_PPC64_TOC16_LO: | |
7403 | case R_PPC64_TOC16_HI: | |
7404 | case R_PPC64_TOC16_HA: | |
7405 | case R_PPC64_TOC16_DS: | |
7406 | case R_PPC64_TOC16_LO_DS: | |
7407 | case R_PPC64_ADDR64: | |
7408 | break; | |
7409 | } | |
7410 | ||
7411 | r_symndx = ELF64_R_SYM (rel->r_info); | |
7412 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
7413 | r_symndx, ibfd)) | |
7414 | goto error_ret; | |
7415 | ||
7416 | if (sym_sec != toc || h != NULL || sym->st_value != 0) | |
7417 | continue; | |
7418 | ||
7419 | rel->r_addend -= skip[rel->r_addend >> 3]; | |
7420 | } | |
7421 | } | |
7422 | ||
7423 | /* We shouldn't have local or global symbols defined in the TOC, | |
7424 | but handle them anyway. */ | |
7425 | if (local_syms != NULL) | |
7426 | { | |
7427 | Elf_Internal_Sym *sym; | |
7428 | ||
7429 | for (sym = local_syms; | |
7430 | sym < local_syms + symtab_hdr->sh_info; | |
7431 | ++sym) | |
7432 | if (sym->st_shndx != SHN_UNDEF | |
7433 | && (sym->st_shndx < SHN_LORESERVE | |
7434 | || sym->st_shndx > SHN_HIRESERVE) | |
7435 | && sym->st_value != 0 | |
7436 | && bfd_section_from_elf_index (ibfd, sym->st_shndx) == toc) | |
7437 | { | |
7438 | if (skip[sym->st_value >> 3] != (unsigned long) -1) | |
7439 | sym->st_value -= skip[sym->st_value >> 3]; | |
7440 | else | |
7441 | { | |
7442 | (*_bfd_error_handler) | |
7443 | (_("%s defined in removed toc entry"), | |
26c61ae5 L |
7444 | bfd_elf_sym_name (ibfd, symtab_hdr, sym, |
7445 | NULL)); | |
c5614fa4 AM |
7446 | sym->st_value = 0; |
7447 | sym->st_shndx = SHN_ABS; | |
7448 | } | |
7449 | symtab_hdr->contents = (unsigned char *) local_syms; | |
7450 | } | |
7451 | } | |
7452 | ||
7453 | /* Finally, adjust any global syms defined in the toc. */ | |
7454 | if (toc_inf.global_toc_syms) | |
7455 | { | |
7456 | toc_inf.toc = toc; | |
7457 | toc_inf.skip = skip; | |
7458 | toc_inf.global_toc_syms = FALSE; | |
7459 | elf_link_hash_traverse (elf_hash_table (info), adjust_toc_syms, | |
7460 | &toc_inf); | |
7461 | } | |
7462 | } | |
7463 | ||
7464 | if (local_syms != NULL | |
7465 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
7466 | { | |
7467 | if (!info->keep_memory) | |
7468 | free (local_syms); | |
7469 | else | |
7470 | symtab_hdr->contents = (unsigned char *) local_syms; | |
7471 | } | |
7472 | free (skip); | |
7473 | } | |
7474 | ||
7475 | return TRUE; | |
7476 | } | |
7477 | ||
65f38f15 AM |
7478 | /* Allocate space in .plt, .got and associated reloc sections for |
7479 | dynamic relocs. */ | |
5bd4f169 | 7480 | |
b34976b6 | 7481 | static bfd_boolean |
4ce794b7 | 7482 | allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf) |
5bd4f169 | 7483 | { |
65f38f15 AM |
7484 | struct bfd_link_info *info; |
7485 | struct ppc_link_hash_table *htab; | |
5bd4f169 | 7486 | asection *s; |
65f38f15 AM |
7487 | struct ppc_link_hash_entry *eh; |
7488 | struct ppc_dyn_relocs *p; | |
411e1bfb | 7489 | struct got_entry *gent; |
5bd4f169 | 7490 | |
e92d460e | 7491 | if (h->root.type == bfd_link_hash_indirect) |
b34976b6 | 7492 | return TRUE; |
5bd4f169 | 7493 | |
e92d460e AM |
7494 | if (h->root.type == bfd_link_hash_warning) |
7495 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
7496 | ||
65f38f15 AM |
7497 | info = (struct bfd_link_info *) inf; |
7498 | htab = ppc_hash_table (info); | |
5bd4f169 | 7499 | |
65f38f15 | 7500 | if (htab->elf.dynamic_sections_created |
411e1bfb | 7501 | && h->dynindx != -1 |
9c7a29a3 | 7502 | && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h)) |
5bd4f169 | 7503 | { |
411e1bfb AM |
7504 | struct plt_entry *pent; |
7505 | bfd_boolean doneone = FALSE; | |
7506 | for (pent = h->plt.plist; pent != NULL; pent = pent->next) | |
7507 | if (pent->plt.refcount > 0) | |
7508 | { | |
411e1bfb AM |
7509 | /* If this is the first .plt entry, make room for the special |
7510 | first entry. */ | |
4ce794b7 | 7511 | s = htab->plt; |
eea6121a AM |
7512 | if (s->size == 0) |
7513 | s->size += PLT_INITIAL_ENTRY_SIZE; | |
411e1bfb | 7514 | |
eea6121a | 7515 | pent->plt.offset = s->size; |
411e1bfb AM |
7516 | |
7517 | /* Make room for this entry. */ | |
eea6121a | 7518 | s->size += PLT_ENTRY_SIZE; |
411e1bfb AM |
7519 | |
7520 | /* Make room for the .glink code. */ | |
4ce794b7 | 7521 | s = htab->glink; |
eea6121a AM |
7522 | if (s->size == 0) |
7523 | s->size += GLINK_CALL_STUB_SIZE; | |
411e1bfb | 7524 | /* We need bigger stubs past index 32767. */ |
eea6121a AM |
7525 | if (s->size >= GLINK_CALL_STUB_SIZE + 32768*2*4) |
7526 | s->size += 4; | |
7527 | s->size += 2*4; | |
411e1bfb AM |
7528 | |
7529 | /* We also need to make an entry in the .rela.plt section. */ | |
4ce794b7 | 7530 | s = htab->relplt; |
eea6121a | 7531 | s->size += sizeof (Elf64_External_Rela); |
411e1bfb AM |
7532 | doneone = TRUE; |
7533 | } | |
7534 | else | |
7535 | pent->plt.offset = (bfd_vma) -1; | |
7536 | if (!doneone) | |
65f38f15 | 7537 | { |
411e1bfb | 7538 | h->plt.plist = NULL; |
f5385ebf | 7539 | h->needs_plt = 0; |
65f38f15 AM |
7540 | } |
7541 | } | |
7542 | else | |
7543 | { | |
411e1bfb | 7544 | h->plt.plist = NULL; |
f5385ebf | 7545 | h->needs_plt = 0; |
65f38f15 AM |
7546 | } |
7547 | ||
951fd09b AM |
7548 | eh = (struct ppc_link_hash_entry *) h; |
7549 | /* Run through the TLS GD got entries first if we're changing them | |
7550 | to TPREL. */ | |
e7b938ca | 7551 | if ((eh->tls_mask & TLS_TPRELGD) != 0) |
951fd09b AM |
7552 | for (gent = h->got.glist; gent != NULL; gent = gent->next) |
7553 | if (gent->got.refcount > 0 | |
7554 | && (gent->tls_type & TLS_GD) != 0) | |
7555 | { | |
7556 | /* This was a GD entry that has been converted to TPREL. If | |
7557 | there happens to be a TPREL entry we can use that one. */ | |
7558 | struct got_entry *ent; | |
7559 | for (ent = h->got.glist; ent != NULL; ent = ent->next) | |
7560 | if (ent->got.refcount > 0 | |
7561 | && (ent->tls_type & TLS_TPREL) != 0 | |
e717da7e AM |
7562 | && ent->addend == gent->addend |
7563 | && ent->owner == gent->owner) | |
951fd09b AM |
7564 | { |
7565 | gent->got.refcount = 0; | |
7566 | break; | |
7567 | } | |
7568 | ||
7569 | /* If not, then we'll be using our own TPREL entry. */ | |
7570 | if (gent->got.refcount != 0) | |
7571 | gent->tls_type = TLS_TLS | TLS_TPREL; | |
7572 | } | |
7573 | ||
411e1bfb AM |
7574 | for (gent = h->got.glist; gent != NULL; gent = gent->next) |
7575 | if (gent->got.refcount > 0) | |
7576 | { | |
951fd09b AM |
7577 | bfd_boolean dyn; |
7578 | ||
411e1bfb | 7579 | /* Make sure this symbol is output as a dynamic symbol. |
951fd09b AM |
7580 | Undefined weak syms won't yet be marked as dynamic, |
7581 | nor will all TLS symbols. */ | |
411e1bfb | 7582 | if (h->dynindx == -1 |
f5385ebf | 7583 | && !h->forced_local) |
411e1bfb | 7584 | { |
c152c796 | 7585 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
411e1bfb AM |
7586 | return FALSE; |
7587 | } | |
65f38f15 | 7588 | |
d881513a | 7589 | if ((gent->tls_type & TLS_LD) != 0 |
f5385ebf | 7590 | && !h->def_dynamic) |
411e1bfb | 7591 | { |
e717da7e | 7592 | gent->got.offset = ppc64_tlsld_got (gent->owner)->offset; |
951fd09b | 7593 | continue; |
411e1bfb | 7594 | } |
951fd09b | 7595 | |
e717da7e | 7596 | s = ppc64_elf_tdata (gent->owner)->got; |
eea6121a AM |
7597 | gent->got.offset = s->size; |
7598 | s->size | |
d881513a | 7599 | += (gent->tls_type & eh->tls_mask & (TLS_GD | TLS_LD)) ? 16 : 8; |
951fd09b | 7600 | dyn = htab->elf.dynamic_sections_created; |
4e795f50 AM |
7601 | if ((info->shared |
7602 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)) | |
7603 | && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
7604 | || h->root.type != bfd_link_hash_undefweak)) | |
eea6121a | 7605 | ppc64_elf_tdata (gent->owner)->relgot->size |
e7b938ca | 7606 | += (gent->tls_type & eh->tls_mask & TLS_GD |
951fd09b AM |
7607 | ? 2 * sizeof (Elf64_External_Rela) |
7608 | : sizeof (Elf64_External_Rela)); | |
411e1bfb AM |
7609 | } |
7610 | else | |
7611 | gent->got.offset = (bfd_vma) -1; | |
65f38f15 | 7612 | |
65f38f15 | 7613 | if (eh->dyn_relocs == NULL) |
b34976b6 | 7614 | return TRUE; |
65f38f15 AM |
7615 | |
7616 | /* In the shared -Bsymbolic case, discard space allocated for | |
7617 | dynamic pc-relative relocs against symbols which turn out to be | |
7618 | defined in regular objects. For the normal shared case, discard | |
7619 | space for relocs that have become local due to symbol visibility | |
7620 | changes. */ | |
7621 | ||
7622 | if (info->shared) | |
7623 | { | |
9c7a29a3 AM |
7624 | /* Relocs that use pc_count are those that appear on a call insn, |
7625 | or certain REL relocs (see MUST_BE_DYN_RELOC) that can be | |
7626 | generated via assembly. We want calls to protected symbols to | |
7627 | resolve directly to the function rather than going via the plt. | |
7628 | If people want function pointer comparisons to work as expected | |
7629 | then they should avoid writing weird assembly. */ | |
09695f56 | 7630 | if (SYMBOL_CALLS_LOCAL (info, h)) |
65f38f15 AM |
7631 | { |
7632 | struct ppc_dyn_relocs **pp; | |
7633 | ||
7634 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) | |
5bd4f169 | 7635 | { |
65f38f15 AM |
7636 | p->count -= p->pc_count; |
7637 | p->pc_count = 0; | |
7638 | if (p->count == 0) | |
7639 | *pp = p->next; | |
7640 | else | |
7641 | pp = &p->next; | |
5bd4f169 | 7642 | } |
65f38f15 | 7643 | } |
4e795f50 AM |
7644 | |
7645 | /* Also discard relocs on undefined weak syms with non-default | |
7646 | visibility. */ | |
cab87ef9 AM |
7647 | if (eh->dyn_relocs != NULL |
7648 | && h->root.type == bfd_link_hash_undefweak) | |
dfbb6ac9 AM |
7649 | { |
7650 | if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) | |
7651 | eh->dyn_relocs = NULL; | |
7652 | ||
7653 | /* Make sure this symbol is output as a dynamic symbol. | |
7654 | Undefined weak syms won't yet be marked as dynamic. */ | |
7655 | else if (h->dynindx == -1 | |
7656 | && !h->forced_local) | |
7657 | { | |
7658 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) | |
7659 | return FALSE; | |
7660 | } | |
7661 | } | |
65f38f15 | 7662 | } |
f4656909 | 7663 | else if (ELIMINATE_COPY_RELOCS) |
65f38f15 AM |
7664 | { |
7665 | /* For the non-shared case, discard space for relocs against | |
7666 | symbols which turn out to need copy relocs or are not | |
7667 | dynamic. */ | |
7668 | ||
f5385ebf AM |
7669 | if (!h->non_got_ref |
7670 | && h->def_dynamic | |
7671 | && !h->def_regular) | |
65f38f15 AM |
7672 | { |
7673 | /* Make sure this symbol is output as a dynamic symbol. | |
7674 | Undefined weak syms won't yet be marked as dynamic. */ | |
7675 | if (h->dynindx == -1 | |
f5385ebf | 7676 | && !h->forced_local) |
65f38f15 | 7677 | { |
c152c796 | 7678 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 7679 | return FALSE; |
65f38f15 AM |
7680 | } |
7681 | ||
7682 | /* If that succeeded, we know we'll be keeping all the | |
7683 | relocs. */ | |
7684 | if (h->dynindx != -1) | |
7685 | goto keep; | |
7686 | } | |
7687 | ||
7688 | eh->dyn_relocs = NULL; | |
7689 | ||
ec338859 | 7690 | keep: ; |
65f38f15 AM |
7691 | } |
7692 | ||
7693 | /* Finally, allocate space. */ | |
7694 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
7695 | { | |
7696 | asection *sreloc = elf_section_data (p->sec)->sreloc; | |
eea6121a | 7697 | sreloc->size += p->count * sizeof (Elf64_External_Rela); |
65f38f15 AM |
7698 | } |
7699 | ||
b34976b6 | 7700 | return TRUE; |
65f38f15 AM |
7701 | } |
7702 | ||
7703 | /* Find any dynamic relocs that apply to read-only sections. */ | |
7704 | ||
b34976b6 | 7705 | static bfd_boolean |
4ce794b7 | 7706 | readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf) |
65f38f15 AM |
7707 | { |
7708 | struct ppc_link_hash_entry *eh; | |
7709 | struct ppc_dyn_relocs *p; | |
7710 | ||
e92d460e AM |
7711 | if (h->root.type == bfd_link_hash_warning) |
7712 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
7713 | ||
65f38f15 AM |
7714 | eh = (struct ppc_link_hash_entry *) h; |
7715 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
7716 | { | |
7717 | asection *s = p->sec->output_section; | |
7718 | ||
7719 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
7720 | { | |
4ce794b7 | 7721 | struct bfd_link_info *info = inf; |
65f38f15 AM |
7722 | |
7723 | info->flags |= DF_TEXTREL; | |
7724 | ||
7725 | /* Not an error, just cut short the traversal. */ | |
b34976b6 | 7726 | return FALSE; |
65f38f15 AM |
7727 | } |
7728 | } | |
b34976b6 | 7729 | return TRUE; |
65f38f15 AM |
7730 | } |
7731 | ||
7732 | /* Set the sizes of the dynamic sections. */ | |
7733 | ||
b34976b6 | 7734 | static bfd_boolean |
4ce794b7 AM |
7735 | ppc64_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED, |
7736 | struct bfd_link_info *info) | |
65f38f15 AM |
7737 | { |
7738 | struct ppc_link_hash_table *htab; | |
7739 | bfd *dynobj; | |
7740 | asection *s; | |
b34976b6 | 7741 | bfd_boolean relocs; |
65f38f15 AM |
7742 | bfd *ibfd; |
7743 | ||
7744 | htab = ppc_hash_table (info); | |
7745 | dynobj = htab->elf.dynobj; | |
7746 | if (dynobj == NULL) | |
7747 | abort (); | |
7748 | ||
7749 | if (htab->elf.dynamic_sections_created) | |
7750 | { | |
7751 | /* Set the contents of the .interp section to the interpreter. */ | |
36af4a4e | 7752 | if (info->executable) |
65f38f15 AM |
7753 | { |
7754 | s = bfd_get_section_by_name (dynobj, ".interp"); | |
7755 | if (s == NULL) | |
7756 | abort (); | |
eea6121a | 7757 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; |
65f38f15 AM |
7758 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; |
7759 | } | |
7760 | } | |
7761 | ||
7762 | /* Set up .got offsets for local syms, and space for local dynamic | |
7763 | relocs. */ | |
7764 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
7765 | { | |
411e1bfb AM |
7766 | struct got_entry **lgot_ents; |
7767 | struct got_entry **end_lgot_ents; | |
e7b938ca | 7768 | char *lgot_masks; |
65f38f15 AM |
7769 | bfd_size_type locsymcount; |
7770 | Elf_Internal_Shdr *symtab_hdr; | |
7771 | asection *srel; | |
7772 | ||
ee75fd95 | 7773 | if (!is_ppc64_elf_target (ibfd->xvec)) |
65f38f15 AM |
7774 | continue; |
7775 | ||
e717da7e AM |
7776 | if (ppc64_tlsld_got (ibfd)->refcount > 0) |
7777 | { | |
7778 | s = ppc64_elf_tdata (ibfd)->got; | |
eea6121a AM |
7779 | ppc64_tlsld_got (ibfd)->offset = s->size; |
7780 | s->size += 16; | |
e717da7e AM |
7781 | if (info->shared) |
7782 | { | |
7783 | srel = ppc64_elf_tdata (ibfd)->relgot; | |
eea6121a | 7784 | srel->size += sizeof (Elf64_External_Rela); |
e717da7e AM |
7785 | } |
7786 | } | |
7787 | else | |
7788 | ppc64_tlsld_got (ibfd)->offset = (bfd_vma) -1; | |
7789 | ||
65f38f15 AM |
7790 | for (s = ibfd->sections; s != NULL; s = s->next) |
7791 | { | |
ec338859 | 7792 | struct ppc_dyn_relocs *p; |
65f38f15 | 7793 | |
6edfbbad | 7794 | for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next) |
65f38f15 | 7795 | { |
ec338859 AM |
7796 | if (!bfd_is_abs_section (p->sec) |
7797 | && bfd_is_abs_section (p->sec->output_section)) | |
7798 | { | |
7799 | /* Input section has been discarded, either because | |
7800 | it is a copy of a linkonce section or due to | |
7801 | linker script /DISCARD/, so we'll be discarding | |
7802 | the relocs too. */ | |
7803 | } | |
248866a8 | 7804 | else if (p->count != 0) |
ec338859 AM |
7805 | { |
7806 | srel = elf_section_data (p->sec)->sreloc; | |
eea6121a | 7807 | srel->size += p->count * sizeof (Elf64_External_Rela); |
248866a8 AM |
7808 | if ((p->sec->output_section->flags & SEC_READONLY) != 0) |
7809 | info->flags |= DF_TEXTREL; | |
ec338859 | 7810 | } |
65f38f15 AM |
7811 | } |
7812 | } | |
7813 | ||
411e1bfb AM |
7814 | lgot_ents = elf_local_got_ents (ibfd); |
7815 | if (!lgot_ents) | |
65f38f15 AM |
7816 | continue; |
7817 | ||
7818 | symtab_hdr = &elf_tdata (ibfd)->symtab_hdr; | |
7819 | locsymcount = symtab_hdr->sh_info; | |
411e1bfb | 7820 | end_lgot_ents = lgot_ents + locsymcount; |
e7b938ca | 7821 | lgot_masks = (char *) end_lgot_ents; |
e717da7e AM |
7822 | s = ppc64_elf_tdata (ibfd)->got; |
7823 | srel = ppc64_elf_tdata (ibfd)->relgot; | |
e7b938ca | 7824 | for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks) |
65f38f15 | 7825 | { |
411e1bfb AM |
7826 | struct got_entry *ent; |
7827 | ||
7828 | for (ent = *lgot_ents; ent != NULL; ent = ent->next) | |
7829 | if (ent->got.refcount > 0) | |
7830 | { | |
e7b938ca | 7831 | if ((ent->tls_type & *lgot_masks & TLS_LD) != 0) |
411e1bfb | 7832 | { |
e717da7e | 7833 | if (ppc64_tlsld_got (ibfd)->offset == (bfd_vma) -1) |
411e1bfb | 7834 | { |
eea6121a AM |
7835 | ppc64_tlsld_got (ibfd)->offset = s->size; |
7836 | s->size += 16; | |
411e1bfb | 7837 | if (info->shared) |
eea6121a | 7838 | srel->size += sizeof (Elf64_External_Rela); |
411e1bfb | 7839 | } |
e717da7e | 7840 | ent->got.offset = ppc64_tlsld_got (ibfd)->offset; |
411e1bfb AM |
7841 | } |
7842 | else | |
7843 | { | |
eea6121a | 7844 | ent->got.offset = s->size; |
e7b938ca | 7845 | if ((ent->tls_type & *lgot_masks & TLS_GD) != 0) |
411e1bfb | 7846 | { |
eea6121a | 7847 | s->size += 16; |
411e1bfb | 7848 | if (info->shared) |
eea6121a | 7849 | srel->size += 2 * sizeof (Elf64_External_Rela); |
411e1bfb AM |
7850 | } |
7851 | else | |
7852 | { | |
eea6121a | 7853 | s->size += 8; |
411e1bfb | 7854 | if (info->shared) |
eea6121a | 7855 | srel->size += sizeof (Elf64_External_Rela); |
411e1bfb AM |
7856 | } |
7857 | } | |
7858 | } | |
7859 | else | |
7860 | ent->got.offset = (bfd_vma) -1; | |
65f38f15 AM |
7861 | } |
7862 | } | |
7863 | ||
7864 | /* Allocate global sym .plt and .got entries, and space for global | |
7865 | sym dynamic relocs. */ | |
4ce794b7 | 7866 | elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info); |
65f38f15 AM |
7867 | |
7868 | /* We now have determined the sizes of the various dynamic sections. | |
7869 | Allocate memory for them. */ | |
b34976b6 | 7870 | relocs = FALSE; |
65f38f15 AM |
7871 | for (s = dynobj->sections; s != NULL; s = s->next) |
7872 | { | |
7873 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
7874 | continue; | |
7875 | ||
4ce794b7 | 7876 | if (s == htab->brlt || s == htab->relbrlt) |
721956f4 AM |
7877 | /* These haven't been allocated yet; don't strip. */ |
7878 | continue; | |
e717da7e AM |
7879 | else if (s == htab->got |
7880 | || s == htab->plt | |
c456f082 AM |
7881 | || s == htab->glink |
7882 | || s == htab->dynbss) | |
65f38f15 AM |
7883 | { |
7884 | /* Strip this section if we don't need it; see the | |
7885 | comment below. */ | |
5bd4f169 | 7886 | } |
65f38f15 | 7887 | else if (strncmp (bfd_get_section_name (dynobj, s), ".rela", 5) == 0) |
5bd4f169 | 7888 | { |
c456f082 | 7889 | if (s->size != 0) |
5bd4f169 | 7890 | { |
4ce794b7 | 7891 | if (s != htab->relplt) |
b34976b6 | 7892 | relocs = TRUE; |
5bd4f169 AM |
7893 | |
7894 | /* We use the reloc_count field as a counter if we need | |
7895 | to copy relocs into the output file. */ | |
7896 | s->reloc_count = 0; | |
7897 | } | |
7898 | } | |
65f38f15 | 7899 | else |
5bd4f169 AM |
7900 | { |
7901 | /* It's not one of our sections, so don't allocate space. */ | |
7902 | continue; | |
7903 | } | |
7904 | ||
eea6121a | 7905 | if (s->size == 0) |
5bd4f169 | 7906 | { |
c456f082 AM |
7907 | /* If we don't need this section, strip it from the |
7908 | output file. This is mostly to handle .rela.bss and | |
7909 | .rela.plt. We must create both sections in | |
7910 | create_dynamic_sections, because they must be created | |
7911 | before the linker maps input sections to output | |
7912 | sections. The linker does that before | |
7913 | adjust_dynamic_symbol is called, and it is that | |
7914 | function which decides whether anything needs to go | |
7915 | into these sections. */ | |
8423293d | 7916 | s->flags |= SEC_EXCLUDE; |
5bd4f169 AM |
7917 | continue; |
7918 | } | |
7919 | ||
c456f082 | 7920 | if ((s->flags & SEC_HAS_CONTENTS) == 0) |
5f333394 AM |
7921 | continue; |
7922 | ||
65f38f15 AM |
7923 | /* Allocate memory for the section contents. We use bfd_zalloc |
7924 | here in case unused entries are not reclaimed before the | |
7925 | section's contents are written out. This should not happen, | |
411e1bfb AM |
7926 | but this way if it does we get a R_PPC64_NONE reloc in .rela |
7927 | sections instead of garbage. | |
7928 | We also rely on the section contents being zero when writing | |
7929 | the GOT. */ | |
eea6121a | 7930 | s->contents = bfd_zalloc (dynobj, s->size); |
65f38f15 | 7931 | if (s->contents == NULL) |
b34976b6 | 7932 | return FALSE; |
5bd4f169 AM |
7933 | } |
7934 | ||
e717da7e AM |
7935 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) |
7936 | { | |
ee75fd95 | 7937 | if (!is_ppc64_elf_target (ibfd->xvec)) |
7b53ace3 AM |
7938 | continue; |
7939 | ||
e717da7e AM |
7940 | s = ppc64_elf_tdata (ibfd)->got; |
7941 | if (s != NULL && s != htab->got) | |
7942 | { | |
eea6121a | 7943 | if (s->size == 0) |
8423293d | 7944 | s->flags |= SEC_EXCLUDE; |
e717da7e AM |
7945 | else |
7946 | { | |
eea6121a | 7947 | s->contents = bfd_zalloc (ibfd, s->size); |
e717da7e AM |
7948 | if (s->contents == NULL) |
7949 | return FALSE; | |
7950 | } | |
7951 | } | |
7952 | s = ppc64_elf_tdata (ibfd)->relgot; | |
7953 | if (s != NULL) | |
7954 | { | |
eea6121a | 7955 | if (s->size == 0) |
8423293d | 7956 | s->flags |= SEC_EXCLUDE; |
e717da7e AM |
7957 | else |
7958 | { | |
eea6121a | 7959 | s->contents = bfd_zalloc (ibfd, s->size); |
e717da7e AM |
7960 | if (s->contents == NULL) |
7961 | return FALSE; | |
7962 | relocs = TRUE; | |
7963 | s->reloc_count = 0; | |
7964 | } | |
7965 | } | |
7966 | } | |
7967 | ||
e86ce104 | 7968 | if (htab->elf.dynamic_sections_created) |
5bd4f169 AM |
7969 | { |
7970 | /* Add some entries to the .dynamic section. We fill in the | |
7971 | values later, in ppc64_elf_finish_dynamic_sections, but we | |
7972 | must add the entries now so that we get the correct size for | |
7973 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
7974 | dynamic linker and used by the debugger. */ | |
dc810e39 | 7975 | #define add_dynamic_entry(TAG, VAL) \ |
5a580b3a | 7976 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) |
dc810e39 | 7977 | |
36af4a4e | 7978 | if (info->executable) |
5bd4f169 | 7979 | { |
dc810e39 | 7980 | if (!add_dynamic_entry (DT_DEBUG, 0)) |
b34976b6 | 7981 | return FALSE; |
5bd4f169 AM |
7982 | } |
7983 | ||
eea6121a | 7984 | if (htab->plt != NULL && htab->plt->size != 0) |
5bd4f169 | 7985 | { |
dc810e39 AM |
7986 | if (!add_dynamic_entry (DT_PLTGOT, 0) |
7987 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
7988 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
5d1634d7 AM |
7989 | || !add_dynamic_entry (DT_JMPREL, 0) |
7990 | || !add_dynamic_entry (DT_PPC64_GLINK, 0)) | |
b34976b6 | 7991 | return FALSE; |
5bd4f169 AM |
7992 | } |
7993 | ||
19397422 AM |
7994 | if (NO_OPD_RELOCS) |
7995 | { | |
7996 | if (!add_dynamic_entry (DT_PPC64_OPD, 0) | |
7997 | || !add_dynamic_entry (DT_PPC64_OPDSZ, 0)) | |
b34976b6 | 7998 | return FALSE; |
19397422 AM |
7999 | } |
8000 | ||
5bd4f169 AM |
8001 | if (relocs) |
8002 | { | |
dc810e39 AM |
8003 | if (!add_dynamic_entry (DT_RELA, 0) |
8004 | || !add_dynamic_entry (DT_RELASZ, 0) | |
8005 | || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela))) | |
b34976b6 | 8006 | return FALSE; |
5bd4f169 | 8007 | |
65f38f15 AM |
8008 | /* If any dynamic relocs apply to a read-only section, |
8009 | then we need a DT_TEXTREL entry. */ | |
248866a8 | 8010 | if ((info->flags & DF_TEXTREL) == 0) |
4ce794b7 | 8011 | elf_link_hash_traverse (&htab->elf, readonly_dynrelocs, info); |
5bd4f169 | 8012 | |
65f38f15 | 8013 | if ((info->flags & DF_TEXTREL) != 0) |
5bd4f169 | 8014 | { |
65f38f15 | 8015 | if (!add_dynamic_entry (DT_TEXTREL, 0)) |
b34976b6 | 8016 | return FALSE; |
5bd4f169 | 8017 | } |
5bd4f169 | 8018 | } |
5bd4f169 | 8019 | } |
65f38f15 | 8020 | #undef add_dynamic_entry |
5bd4f169 | 8021 | |
b34976b6 | 8022 | return TRUE; |
5bd4f169 AM |
8023 | } |
8024 | ||
721956f4 | 8025 | /* Determine the type of stub needed, if any, for a call. */ |
5bd4f169 | 8026 | |
4ce794b7 AM |
8027 | static inline enum ppc_stub_type |
8028 | ppc_type_of_stub (asection *input_sec, | |
8029 | const Elf_Internal_Rela *rel, | |
8030 | struct ppc_link_hash_entry **hash, | |
8031 | bfd_vma destination) | |
5bd4f169 | 8032 | { |
721956f4 AM |
8033 | struct ppc_link_hash_entry *h = *hash; |
8034 | bfd_vma location; | |
8035 | bfd_vma branch_offset; | |
8036 | bfd_vma max_branch_offset; | |
4ce794b7 | 8037 | enum elf_ppc64_reloc_type r_type; |
5bd4f169 | 8038 | |
721956f4 AM |
8039 | if (h != NULL) |
8040 | { | |
7fe2b9a6 AM |
8041 | struct ppc_link_hash_entry *fdh = h; |
8042 | if (fdh->oh != NULL | |
8043 | && fdh->oh->is_func_descriptor) | |
8044 | fdh = fdh->oh; | |
8387904d | 8045 | |
7fe2b9a6 | 8046 | if (fdh->elf.dynindx != -1) |
5bd4f169 | 8047 | { |
411e1bfb | 8048 | struct plt_entry *ent; |
8387904d | 8049 | |
7fe2b9a6 | 8050 | for (ent = fdh->elf.plt.plist; ent != NULL; ent = ent->next) |
411e1bfb AM |
8051 | if (ent->addend == rel->r_addend |
8052 | && ent->plt.offset != (bfd_vma) -1) | |
8053 | { | |
7fe2b9a6 | 8054 | *hash = fdh; |
411e1bfb AM |
8055 | return ppc_stub_plt_call; |
8056 | } | |
5bd4f169 AM |
8057 | } |
8058 | ||
7fe2b9a6 AM |
8059 | /* Here, we know we don't have a plt entry. If we don't have a |
8060 | either a defined function descriptor or a defined entry symbol | |
8061 | in a regular object file, then it is pointless trying to make | |
8062 | any other type of stub. */ | |
8063 | if (!((fdh->elf.root.type == bfd_link_hash_defined | |
8064 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
8065 | && fdh->elf.root.u.def.section->output_section != NULL) | |
8066 | && !((h->elf.root.type == bfd_link_hash_defined | |
8067 | || h->elf.root.type == bfd_link_hash_defweak) | |
8068 | && h->elf.root.u.def.section->output_section != NULL)) | |
721956f4 | 8069 | return ppc_stub_none; |
5d1634d7 | 8070 | } |
5d1634d7 | 8071 | |
721956f4 AM |
8072 | /* Determine where the call point is. */ |
8073 | location = (input_sec->output_offset | |
8074 | + input_sec->output_section->vma | |
8075 | + rel->r_offset); | |
5d1634d7 | 8076 | |
721956f4 AM |
8077 | branch_offset = destination - location; |
8078 | r_type = ELF64_R_TYPE (rel->r_info); | |
5d1634d7 | 8079 | |
721956f4 AM |
8080 | /* Determine if a long branch stub is needed. */ |
8081 | max_branch_offset = 1 << 25; | |
4ce794b7 | 8082 | if (r_type != R_PPC64_REL24) |
721956f4 | 8083 | max_branch_offset = 1 << 15; |
5d1634d7 | 8084 | |
721956f4 AM |
8085 | if (branch_offset + max_branch_offset >= 2 * max_branch_offset) |
8086 | /* We need a stub. Figure out whether a long_branch or plt_branch | |
8087 | is needed later. */ | |
8088 | return ppc_stub_long_branch; | |
5d1634d7 | 8089 | |
721956f4 | 8090 | return ppc_stub_none; |
5d1634d7 AM |
8091 | } |
8092 | ||
8093 | /* Build a .plt call stub. */ | |
8094 | ||
4ce794b7 AM |
8095 | static inline bfd_byte * |
8096 | build_plt_stub (bfd *obfd, bfd_byte *p, int offset) | |
5d1634d7 AM |
8097 | { |
8098 | #define PPC_LO(v) ((v) & 0xffff) | |
8099 | #define PPC_HI(v) (((v) >> 16) & 0xffff) | |
8100 | #define PPC_HA(v) PPC_HI ((v) + 0x8000) | |
8101 | ||
5d1634d7 | 8102 | bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (offset), p), p += 4; |
ad8e1ba5 | 8103 | bfd_put_32 (obfd, STD_R2_40R1, p), p += 4; |
5d1634d7 AM |
8104 | bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset), p), p += 4; |
8105 | if (PPC_HA (offset + 8) != PPC_HA (offset)) | |
ad8e1ba5 | 8106 | bfd_put_32 (obfd, ADDIS_R12_R12 | 1, p), p += 4; |
5d1634d7 AM |
8107 | offset += 8; |
8108 | bfd_put_32 (obfd, LD_R2_0R12 | PPC_LO (offset), p), p += 4; | |
8109 | if (PPC_HA (offset + 8) != PPC_HA (offset)) | |
ad8e1ba5 | 8110 | bfd_put_32 (obfd, ADDIS_R12_R12 | 1, p), p += 4; |
5d1634d7 AM |
8111 | offset += 8; |
8112 | bfd_put_32 (obfd, MTCTR_R11, p), p += 4; | |
8113 | bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset), p), p += 4; | |
8114 | bfd_put_32 (obfd, BCTR, p), p += 4; | |
8115 | return p; | |
8116 | } | |
8117 | ||
b34976b6 | 8118 | static bfd_boolean |
4ce794b7 | 8119 | ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg) |
5d1634d7 | 8120 | { |
721956f4 AM |
8121 | struct ppc_stub_hash_entry *stub_entry; |
8122 | struct ppc_branch_hash_entry *br_entry; | |
5d1634d7 AM |
8123 | struct bfd_link_info *info; |
8124 | struct ppc_link_hash_table *htab; | |
721956f4 AM |
8125 | bfd_byte *loc; |
8126 | bfd_byte *p; | |
8127 | unsigned int indx; | |
411e1bfb | 8128 | struct plt_entry *ent; |
ee75fd95 | 8129 | bfd_vma dest, off; |
721956f4 | 8130 | int size; |
5d1634d7 | 8131 | |
721956f4 AM |
8132 | /* Massage our args to the form they really have. */ |
8133 | stub_entry = (struct ppc_stub_hash_entry *) gen_entry; | |
4ce794b7 | 8134 | info = in_arg; |
5d1634d7 | 8135 | |
5d1634d7 AM |
8136 | htab = ppc_hash_table (info); |
8137 | ||
721956f4 | 8138 | /* Make a note of the offset within the stubs for this entry. */ |
eea6121a | 8139 | stub_entry->stub_offset = stub_entry->stub_sec->size; |
97b639ba | 8140 | loc = stub_entry->stub_sec->contents + stub_entry->stub_offset; |
721956f4 | 8141 | |
4ce794b7 | 8142 | htab->stub_count[stub_entry->stub_type - 1] += 1; |
721956f4 | 8143 | switch (stub_entry->stub_type) |
5d1634d7 | 8144 | { |
721956f4 | 8145 | case ppc_stub_long_branch: |
ad8e1ba5 | 8146 | case ppc_stub_long_branch_r2off: |
721956f4 | 8147 | /* Branches are relative. This is where we are going to. */ |
ee75fd95 AM |
8148 | off = dest = (stub_entry->target_value |
8149 | + stub_entry->target_section->output_offset | |
8150 | + stub_entry->target_section->output_section->vma); | |
5d1634d7 | 8151 | |
721956f4 AM |
8152 | /* And this is where we are coming from. */ |
8153 | off -= (stub_entry->stub_offset | |
97b639ba AM |
8154 | + stub_entry->stub_sec->output_offset |
8155 | + stub_entry->stub_sec->output_section->vma); | |
e86ce104 | 8156 | |
ad8e1ba5 AM |
8157 | if (stub_entry->stub_type != ppc_stub_long_branch_r2off) |
8158 | size = 4; | |
8159 | else | |
8160 | { | |
8161 | bfd_vma r2off; | |
8162 | ||
8163 | r2off = (htab->stub_group[stub_entry->target_section->id].toc_off | |
8164 | - htab->stub_group[stub_entry->id_sec->id].toc_off); | |
97b639ba | 8165 | bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc); |
ad8e1ba5 | 8166 | loc += 4; |
97b639ba | 8167 | bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc); |
ad8e1ba5 | 8168 | loc += 4; |
97b639ba | 8169 | bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc); |
ad8e1ba5 AM |
8170 | loc += 4; |
8171 | off -= 12; | |
8172 | size = 16; | |
8173 | } | |
97b639ba | 8174 | bfd_put_32 (htab->stub_bfd, B_DOT | (off & 0x3fffffc), loc); |
ad8e1ba5 | 8175 | |
5c3dead3 AM |
8176 | if (off + (1 << 25) >= (bfd_vma) (1 << 26)) |
8177 | { | |
8178 | (*_bfd_error_handler) (_("long branch stub `%s' offset overflow"), | |
8179 | stub_entry->root.string); | |
8180 | htab->stub_error = TRUE; | |
8181 | return FALSE; | |
8182 | } | |
ee75fd95 AM |
8183 | |
8184 | if (info->emitrelocations) | |
8185 | { | |
8186 | Elf_Internal_Rela *relocs, *r; | |
8187 | struct bfd_elf_section_data *elfsec_data; | |
8188 | ||
8189 | elfsec_data = elf_section_data (stub_entry->stub_sec); | |
8190 | relocs = elfsec_data->relocs; | |
8191 | if (relocs == NULL) | |
8192 | { | |
8193 | bfd_size_type relsize; | |
8194 | relsize = stub_entry->stub_sec->reloc_count * sizeof (*relocs); | |
8195 | relocs = bfd_alloc (htab->stub_bfd, relsize); | |
8196 | if (relocs == NULL) | |
8197 | return FALSE; | |
8198 | elfsec_data->relocs = relocs; | |
8199 | elfsec_data->rel_hdr.sh_size = relsize; | |
8200 | elfsec_data->rel_hdr.sh_entsize = 24; | |
8201 | stub_entry->stub_sec->reloc_count = 0; | |
8202 | } | |
8203 | r = relocs + stub_entry->stub_sec->reloc_count; | |
8204 | stub_entry->stub_sec->reloc_count += 1; | |
8205 | r->r_offset = loc - stub_entry->stub_sec->contents; | |
8206 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL24); | |
8207 | r->r_addend = dest; | |
8208 | if (stub_entry->h != NULL) | |
8209 | { | |
8210 | struct elf_link_hash_entry **hashes; | |
8211 | unsigned long symndx; | |
8212 | struct ppc_link_hash_entry *h; | |
8213 | ||
8214 | hashes = elf_sym_hashes (htab->stub_bfd); | |
8215 | if (hashes == NULL) | |
8216 | { | |
8217 | bfd_size_type hsize; | |
8218 | ||
8219 | hsize = (htab->stub_globals + 1) * sizeof (*hashes); | |
8220 | hashes = bfd_zalloc (htab->stub_bfd, hsize); | |
8221 | if (hashes == NULL) | |
8222 | return FALSE; | |
8223 | elf_sym_hashes (htab->stub_bfd) = hashes; | |
8224 | htab->stub_globals = 1; | |
8225 | } | |
8226 | symndx = htab->stub_globals++; | |
8227 | h = stub_entry->h; | |
8228 | hashes[symndx] = &h->elf; | |
8229 | r->r_info = ELF64_R_INFO (symndx, R_PPC64_REL24); | |
8230 | if (h->oh != NULL && h->oh->is_func) | |
8231 | h = h->oh; | |
8232 | if (h->elf.root.u.def.section != stub_entry->target_section) | |
8233 | /* H is an opd symbol. The addend must be zero. */ | |
8234 | r->r_addend = 0; | |
8235 | else | |
8236 | { | |
8237 | off = (h->elf.root.u.def.value | |
8238 | + h->elf.root.u.def.section->output_offset | |
8239 | + h->elf.root.u.def.section->output_section->vma); | |
8240 | r->r_addend -= off; | |
8241 | } | |
8242 | } | |
8243 | } | |
721956f4 | 8244 | break; |
e86ce104 | 8245 | |
721956f4 | 8246 | case ppc_stub_plt_branch: |
ad8e1ba5 | 8247 | case ppc_stub_plt_branch_r2off: |
721956f4 AM |
8248 | br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table, |
8249 | stub_entry->root.string + 9, | |
b34976b6 | 8250 | FALSE, FALSE); |
721956f4 AM |
8251 | if (br_entry == NULL) |
8252 | { | |
8253 | (*_bfd_error_handler) (_("can't find branch stub `%s'"), | |
5c3dead3 | 8254 | stub_entry->root.string); |
b34976b6 AM |
8255 | htab->stub_error = TRUE; |
8256 | return FALSE; | |
721956f4 AM |
8257 | } |
8258 | ||
8259 | off = (stub_entry->target_value | |
8260 | + stub_entry->target_section->output_offset | |
8261 | + stub_entry->target_section->output_section->vma); | |
8262 | ||
4ce794b7 AM |
8263 | bfd_put_64 (htab->brlt->owner, off, |
8264 | htab->brlt->contents + br_entry->offset); | |
721956f4 | 8265 | |
ee75fd95 | 8266 | if (htab->relbrlt != NULL) |
721956f4 AM |
8267 | { |
8268 | /* Create a reloc for the branch lookup table entry. */ | |
8269 | Elf_Internal_Rela rela; | |
ad8e1ba5 | 8270 | bfd_byte *rl; |
5d1634d7 | 8271 | |
721956f4 | 8272 | rela.r_offset = (br_entry->offset |
4ce794b7 AM |
8273 | + htab->brlt->output_offset |
8274 | + htab->brlt->output_section->vma); | |
721956f4 AM |
8275 | rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); |
8276 | rela.r_addend = off; | |
8277 | ||
4ce794b7 AM |
8278 | rl = htab->relbrlt->contents; |
8279 | rl += htab->relbrlt->reloc_count++ * sizeof (Elf64_External_Rela); | |
8280 | bfd_elf64_swap_reloca_out (htab->relbrlt->owner, &rela, rl); | |
721956f4 AM |
8281 | } |
8282 | ||
8283 | off = (br_entry->offset | |
4ce794b7 AM |
8284 | + htab->brlt->output_offset |
8285 | + htab->brlt->output_section->vma | |
8286 | - elf_gp (htab->brlt->output_section->owner) | |
ad8e1ba5 | 8287 | - htab->stub_group[stub_entry->id_sec->id].toc_off); |
721956f4 | 8288 | |
ad8e1ba5 | 8289 | if (off + 0x80008000 > 0xffffffff || (off & 7) != 0) |
5d1634d7 AM |
8290 | { |
8291 | (*_bfd_error_handler) | |
e86ce104 | 8292 | (_("linkage table error against `%s'"), |
721956f4 | 8293 | stub_entry->root.string); |
5d1634d7 | 8294 | bfd_set_error (bfd_error_bad_value); |
b34976b6 AM |
8295 | htab->stub_error = TRUE; |
8296 | return FALSE; | |
5d1634d7 | 8297 | } |
41bd81ab | 8298 | |
721956f4 | 8299 | indx = off; |
ad8e1ba5 AM |
8300 | if (stub_entry->stub_type != ppc_stub_plt_branch_r2off) |
8301 | { | |
97b639ba | 8302 | bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (indx), loc); |
ad8e1ba5 | 8303 | loc += 4; |
97b639ba | 8304 | bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (indx), loc); |
ad8e1ba5 AM |
8305 | size = 16; |
8306 | } | |
8307 | else | |
8308 | { | |
8309 | bfd_vma r2off; | |
8310 | ||
8311 | r2off = (htab->stub_group[stub_entry->target_section->id].toc_off | |
8312 | - htab->stub_group[stub_entry->id_sec->id].toc_off); | |
97b639ba | 8313 | bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc); |
ad8e1ba5 | 8314 | loc += 4; |
97b639ba | 8315 | bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (indx), loc); |
ad8e1ba5 | 8316 | loc += 4; |
97b639ba | 8317 | bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (indx), loc); |
ad8e1ba5 | 8318 | loc += 4; |
97b639ba | 8319 | bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc); |
ad8e1ba5 | 8320 | loc += 4; |
97b639ba | 8321 | bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc); |
ad8e1ba5 AM |
8322 | size = 28; |
8323 | } | |
8324 | loc += 4; | |
97b639ba | 8325 | bfd_put_32 (htab->stub_bfd, MTCTR_R11, loc); |
ad8e1ba5 | 8326 | loc += 4; |
97b639ba | 8327 | bfd_put_32 (htab->stub_bfd, BCTR, loc); |
721956f4 | 8328 | break; |
5d1634d7 | 8329 | |
721956f4 | 8330 | case ppc_stub_plt_call: |
c862ae31 AM |
8331 | /* Do the best we can for shared libraries built without |
8332 | exporting ".foo" for each "foo". This can happen when symbol | |
8333 | versioning scripts strip all bar a subset of symbols. */ | |
8387904d AM |
8334 | if (stub_entry->h->oh != NULL |
8335 | && stub_entry->h->oh->elf.root.type != bfd_link_hash_defined | |
34814b9f | 8336 | && stub_entry->h->oh->elf.root.type != bfd_link_hash_defweak) |
c862ae31 AM |
8337 | { |
8338 | /* Point the symbol at the stub. There may be multiple stubs, | |
8339 | we don't really care; The main thing is to make this sym | |
8f3bab57 AM |
8340 | defined somewhere. Maybe defining the symbol in the stub |
8341 | section is a silly idea. If we didn't do this, htab->top_id | |
8342 | could disappear. */ | |
34814b9f AM |
8343 | stub_entry->h->oh->elf.root.type = bfd_link_hash_defined; |
8344 | stub_entry->h->oh->elf.root.u.def.section = stub_entry->stub_sec; | |
8345 | stub_entry->h->oh->elf.root.u.def.value = stub_entry->stub_offset; | |
c862ae31 AM |
8346 | } |
8347 | ||
721956f4 | 8348 | /* Now build the stub. */ |
411e1bfb AM |
8349 | off = (bfd_vma) -1; |
8350 | for (ent = stub_entry->h->elf.plt.plist; ent != NULL; ent = ent->next) | |
8351 | if (ent->addend == stub_entry->addend) | |
8352 | { | |
8353 | off = ent->plt.offset; | |
8354 | break; | |
8355 | } | |
721956f4 AM |
8356 | if (off >= (bfd_vma) -2) |
8357 | abort (); | |
8358 | ||
8359 | off &= ~ (bfd_vma) 1; | |
4ce794b7 AM |
8360 | off += (htab->plt->output_offset |
8361 | + htab->plt->output_section->vma | |
8362 | - elf_gp (htab->plt->output_section->owner) | |
ad8e1ba5 | 8363 | - htab->stub_group[stub_entry->id_sec->id].toc_off); |
721956f4 | 8364 | |
ad8e1ba5 | 8365 | if (off + 0x80008000 > 0xffffffff || (off & 7) != 0) |
721956f4 AM |
8366 | { |
8367 | (*_bfd_error_handler) | |
8368 | (_("linkage table error against `%s'"), | |
8369 | stub_entry->h->elf.root.root.string); | |
8370 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 AM |
8371 | htab->stub_error = TRUE; |
8372 | return FALSE; | |
721956f4 AM |
8373 | } |
8374 | ||
97b639ba | 8375 | p = build_plt_stub (htab->stub_bfd, loc, off); |
721956f4 AM |
8376 | size = p - loc; |
8377 | break; | |
8378 | ||
8379 | default: | |
8380 | BFD_FAIL (); | |
b34976b6 | 8381 | return FALSE; |
721956f4 AM |
8382 | } |
8383 | ||
eea6121a | 8384 | stub_entry->stub_sec->size += size; |
97b639ba | 8385 | |
ee75fd95 | 8386 | if (htab->emit_stub_syms) |
97b639ba AM |
8387 | { |
8388 | struct elf_link_hash_entry *h; | |
ee75fd95 AM |
8389 | size_t len1, len2; |
8390 | char *name; | |
8391 | const char *const stub_str[] = { "long_branch", | |
8392 | "long_branch_r2off", | |
8393 | "plt_branch", | |
8394 | "plt_branch_r2off", | |
8395 | "plt_call" }; | |
8396 | ||
8397 | len1 = strlen (stub_str[stub_entry->stub_type - 1]); | |
8398 | len2 = strlen (stub_entry->root.string); | |
8399 | name = bfd_malloc (len1 + len2 + 2); | |
8400 | if (name == NULL) | |
8401 | return FALSE; | |
8402 | memcpy (name, stub_entry->root.string, 9); | |
8403 | memcpy (name + 9, stub_str[stub_entry->stub_type - 1], len1); | |
8404 | memcpy (name + len1 + 9, stub_entry->root.string + 8, len2 - 8 + 1); | |
8405 | h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE); | |
97b639ba AM |
8406 | if (h == NULL) |
8407 | return FALSE; | |
8408 | if (h->root.type == bfd_link_hash_new) | |
8409 | { | |
8410 | h->root.type = bfd_link_hash_defined; | |
8411 | h->root.u.def.section = stub_entry->stub_sec; | |
8412 | h->root.u.def.value = stub_entry->stub_offset; | |
f5385ebf AM |
8413 | h->ref_regular = 1; |
8414 | h->def_regular = 1; | |
8415 | h->ref_regular_nonweak = 1; | |
8416 | h->forced_local = 1; | |
8417 | h->non_elf = 0; | |
97b639ba AM |
8418 | } |
8419 | } | |
8420 | ||
b34976b6 | 8421 | return TRUE; |
721956f4 AM |
8422 | } |
8423 | ||
8424 | /* As above, but don't actually build the stub. Just bump offset so | |
8425 | we know stub section sizes, and select plt_branch stubs where | |
8426 | long_branch stubs won't do. */ | |
8427 | ||
b34976b6 | 8428 | static bfd_boolean |
4ce794b7 | 8429 | ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg) |
721956f4 AM |
8430 | { |
8431 | struct ppc_stub_hash_entry *stub_entry; | |
63bc6f6c | 8432 | struct bfd_link_info *info; |
721956f4 AM |
8433 | struct ppc_link_hash_table *htab; |
8434 | bfd_vma off; | |
8435 | int size; | |
8436 | ||
8437 | /* Massage our args to the form they really have. */ | |
8438 | stub_entry = (struct ppc_stub_hash_entry *) gen_entry; | |
63bc6f6c AM |
8439 | info = in_arg; |
8440 | ||
8441 | htab = ppc_hash_table (info); | |
721956f4 AM |
8442 | |
8443 | if (stub_entry->stub_type == ppc_stub_plt_call) | |
8444 | { | |
411e1bfb | 8445 | struct plt_entry *ent; |
58ac9f71 | 8446 | off = (bfd_vma) -1; |
411e1bfb AM |
8447 | for (ent = stub_entry->h->elf.plt.plist; ent != NULL; ent = ent->next) |
8448 | if (ent->addend == stub_entry->addend) | |
8449 | { | |
8450 | off = ent->plt.offset & ~(bfd_vma) 1; | |
8451 | break; | |
8452 | } | |
58ac9f71 | 8453 | if (off >= (bfd_vma) -2) |
411e1bfb | 8454 | abort (); |
4ce794b7 AM |
8455 | off += (htab->plt->output_offset |
8456 | + htab->plt->output_section->vma | |
8457 | - elf_gp (htab->plt->output_section->owner) | |
ad8e1ba5 | 8458 | - htab->stub_group[stub_entry->id_sec->id].toc_off); |
721956f4 | 8459 | |
ad8e1ba5 | 8460 | size = PLT_CALL_STUB_SIZE; |
4ce794b7 | 8461 | if (PPC_HA (off + 16) != PPC_HA (off)) |
721956f4 AM |
8462 | size += 4; |
8463 | } | |
8464 | else | |
8465 | { | |
ad8e1ba5 AM |
8466 | /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off |
8467 | variants. */ | |
721956f4 AM |
8468 | off = (stub_entry->target_value |
8469 | + stub_entry->target_section->output_offset | |
8470 | + stub_entry->target_section->output_section->vma); | |
eea6121a | 8471 | off -= (stub_entry->stub_sec->size |
721956f4 AM |
8472 | + stub_entry->stub_sec->output_offset |
8473 | + stub_entry->stub_sec->output_section->vma); | |
8474 | ||
ad8e1ba5 AM |
8475 | /* Reset the stub type from the plt variant in case we now |
8476 | can reach with a shorter stub. */ | |
8477 | if (stub_entry->stub_type >= ppc_stub_plt_branch) | |
8478 | stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch; | |
8479 | ||
8480 | size = 4; | |
8481 | if (stub_entry->stub_type == ppc_stub_long_branch_r2off) | |
8482 | { | |
8483 | off -= 12; | |
8484 | size = 16; | |
8485 | } | |
8486 | ||
8487 | /* If the branch offset if too big, use a ppc_stub_plt_branch. */ | |
721956f4 AM |
8488 | if (off + (1 << 25) >= (bfd_vma) (1 << 26)) |
8489 | { | |
8490 | struct ppc_branch_hash_entry *br_entry; | |
8491 | ||
8492 | br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table, | |
8493 | stub_entry->root.string + 9, | |
b34976b6 | 8494 | TRUE, FALSE); |
721956f4 AM |
8495 | if (br_entry == NULL) |
8496 | { | |
8497 | (*_bfd_error_handler) (_("can't build branch stub `%s'"), | |
5c3dead3 | 8498 | stub_entry->root.string); |
b34976b6 AM |
8499 | htab->stub_error = TRUE; |
8500 | return FALSE; | |
721956f4 AM |
8501 | } |
8502 | ||
8503 | if (br_entry->iter != htab->stub_iteration) | |
8504 | { | |
8505 | br_entry->iter = htab->stub_iteration; | |
eea6121a AM |
8506 | br_entry->offset = htab->brlt->size; |
8507 | htab->brlt->size += 8; | |
63bc6f6c | 8508 | |
ee75fd95 | 8509 | if (htab->relbrlt != NULL) |
eea6121a | 8510 | htab->relbrlt->size += sizeof (Elf64_External_Rela); |
721956f4 | 8511 | } |
ad8e1ba5 AM |
8512 | |
8513 | stub_entry->stub_type += ppc_stub_plt_branch - ppc_stub_long_branch; | |
721956f4 | 8514 | size = 16; |
ad8e1ba5 AM |
8515 | if (stub_entry->stub_type != ppc_stub_plt_branch) |
8516 | size = 28; | |
721956f4 | 8517 | } |
ee75fd95 AM |
8518 | |
8519 | if (info->emitrelocations | |
8520 | && (stub_entry->stub_type == ppc_stub_long_branch | |
8521 | || stub_entry->stub_type == ppc_stub_long_branch_r2off)) | |
8522 | stub_entry->stub_sec->reloc_count += 1; | |
721956f4 AM |
8523 | } |
8524 | ||
eea6121a | 8525 | stub_entry->stub_sec->size += size; |
b34976b6 | 8526 | return TRUE; |
721956f4 AM |
8527 | } |
8528 | ||
8529 | /* Set up various things so that we can make a list of input sections | |
8530 | for each output section included in the link. Returns -1 on error, | |
cedb70c5 | 8531 | 0 when no stubs will be needed, and 1 on success. */ |
721956f4 AM |
8532 | |
8533 | int | |
4c52953f AM |
8534 | ppc64_elf_setup_section_lists (bfd *output_bfd, |
8535 | struct bfd_link_info *info, | |
8536 | int no_multi_toc) | |
721956f4 AM |
8537 | { |
8538 | bfd *input_bfd; | |
734b6cf9 | 8539 | int top_id, top_index, id; |
721956f4 | 8540 | asection *section; |
734b6cf9 | 8541 | asection **input_list; |
721956f4 AM |
8542 | bfd_size_type amt; |
8543 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
8544 | ||
4c52953f AM |
8545 | htab->no_multi_toc = no_multi_toc; |
8546 | ||
4ce794b7 | 8547 | if (htab->brlt == NULL) |
721956f4 AM |
8548 | return 0; |
8549 | ||
1e2f5b6e | 8550 | /* Find the top input section id. */ |
3d6f9012 | 8551 | for (input_bfd = info->input_bfds, top_id = 3; |
721956f4 AM |
8552 | input_bfd != NULL; |
8553 | input_bfd = input_bfd->link_next) | |
8554 | { | |
721956f4 AM |
8555 | for (section = input_bfd->sections; |
8556 | section != NULL; | |
8557 | section = section->next) | |
8558 | { | |
8559 | if (top_id < section->id) | |
8560 | top_id = section->id; | |
8561 | } | |
8562 | } | |
721956f4 | 8563 | |
8f3bab57 | 8564 | htab->top_id = top_id; |
721956f4 | 8565 | amt = sizeof (struct map_stub) * (top_id + 1); |
4ce794b7 | 8566 | htab->stub_group = bfd_zmalloc (amt); |
721956f4 AM |
8567 | if (htab->stub_group == NULL) |
8568 | return -1; | |
8569 | ||
3d6f9012 AM |
8570 | /* Set toc_off for com, und, abs and ind sections. */ |
8571 | for (id = 0; id < 3; id++) | |
8572 | htab->stub_group[id].toc_off = TOC_BASE_OFF; | |
721956f4 | 8573 | |
3d6f9012 | 8574 | elf_gp (output_bfd) = htab->toc_curr = ppc64_elf_toc (output_bfd); |
734b6cf9 AM |
8575 | |
8576 | /* We can't use output_bfd->section_count here to find the top output | |
8577 | section index as some sections may have been removed, and | |
8423293d | 8578 | strip_excluded_output_sections doesn't renumber the indices. */ |
734b6cf9 AM |
8579 | for (section = output_bfd->sections, top_index = 0; |
8580 | section != NULL; | |
8581 | section = section->next) | |
8582 | { | |
8583 | if (top_index < section->index) | |
8584 | top_index = section->index; | |
8585 | } | |
8586 | ||
8587 | htab->top_index = top_index; | |
8588 | amt = sizeof (asection *) * (top_index + 1); | |
4ce794b7 | 8589 | input_list = bfd_zmalloc (amt); |
734b6cf9 AM |
8590 | htab->input_list = input_list; |
8591 | if (input_list == NULL) | |
8592 | return -1; | |
8593 | ||
721956f4 AM |
8594 | return 1; |
8595 | } | |
8596 | ||
e717da7e AM |
8597 | /* The linker repeatedly calls this function for each TOC input section |
8598 | and linker generated GOT section. Group input bfds such that the toc | |
8599 | within a group is less than 64k in size. Will break with cute linker | |
8600 | scripts that play games with dot in the output toc section. */ | |
ad8e1ba5 AM |
8601 | |
8602 | void | |
4ce794b7 | 8603 | ppc64_elf_next_toc_section (struct bfd_link_info *info, asection *isec) |
ad8e1ba5 AM |
8604 | { |
8605 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
8606 | ||
4c52953f AM |
8607 | if (!htab->no_multi_toc) |
8608 | { | |
8609 | bfd_vma addr = isec->output_offset + isec->output_section->vma; | |
8610 | bfd_vma off = addr - htab->toc_curr; | |
8611 | ||
8612 | if (off + isec->size > 0x10000) | |
8613 | htab->toc_curr = addr; | |
99877b66 | 8614 | |
4c52953f AM |
8615 | elf_gp (isec->owner) = (htab->toc_curr |
8616 | - elf_gp (isec->output_section->owner) | |
8617 | + TOC_BASE_OFF); | |
8618 | } | |
ad8e1ba5 AM |
8619 | } |
8620 | ||
8621 | /* Called after the last call to the above function. */ | |
8622 | ||
8623 | void | |
4c52953f | 8624 | ppc64_elf_reinit_toc (bfd *output_bfd, struct bfd_link_info *info) |
ad8e1ba5 AM |
8625 | { |
8626 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
ad8e1ba5 | 8627 | |
4c52953f AM |
8628 | htab->multi_toc_needed = htab->toc_curr != elf_gp (output_bfd); |
8629 | ||
ad8e1ba5 AM |
8630 | /* toc_curr tracks the TOC offset used for code sections below in |
8631 | ppc64_elf_next_input_section. Start off at 0x8000. */ | |
3d6f9012 | 8632 | htab->toc_curr = TOC_BASE_OFF; |
ad8e1ba5 AM |
8633 | } |
8634 | ||
9b5ecbd0 AM |
8635 | /* No toc references were found in ISEC. If the code in ISEC makes no |
8636 | calls, then there's no need to use toc adjusting stubs when branching | |
8637 | into ISEC. Actually, indirect calls from ISEC are OK as they will | |
4c52953f AM |
8638 | load r2. Returns -1 on error, 0 for no stub needed, 1 for stub |
8639 | needed, and 2 if a cyclical call-graph was found but no other reason | |
8640 | for a stub was detected. If called from the top level, a return of | |
8641 | 2 means the same as a return of 0. */ | |
9b5ecbd0 AM |
8642 | |
8643 | static int | |
4ce794b7 | 8644 | toc_adjusting_stub_needed (struct bfd_link_info *info, asection *isec) |
9b5ecbd0 | 8645 | { |
4c52953f AM |
8646 | Elf_Internal_Rela *relstart, *rel; |
8647 | Elf_Internal_Sym *local_syms; | |
9b5ecbd0 | 8648 | int ret; |
4c52953f | 8649 | struct ppc_link_hash_table *htab; |
9b5ecbd0 | 8650 | |
772119ce AM |
8651 | /* We know none of our code bearing sections will need toc stubs. */ |
8652 | if ((isec->flags & SEC_LINKER_CREATED) != 0) | |
8653 | return 0; | |
8654 | ||
eea6121a | 8655 | if (isec->size == 0) |
082c50f8 AM |
8656 | return 0; |
8657 | ||
4c52953f AM |
8658 | if (isec->output_section == NULL) |
8659 | return 0; | |
8660 | ||
9b5ecbd0 AM |
8661 | /* Hack for linux kernel. .fixup contains branches, but only back to |
8662 | the function that hit an exception. */ | |
4c52953f AM |
8663 | if (strcmp (isec->name, ".fixup") == 0) |
8664 | return 0; | |
9b5ecbd0 | 8665 | |
4c52953f AM |
8666 | if (isec->reloc_count == 0) |
8667 | return 0; | |
8668 | ||
8669 | relstart = _bfd_elf_link_read_relocs (isec->owner, isec, NULL, NULL, | |
8670 | info->keep_memory); | |
8671 | if (relstart == NULL) | |
8672 | return -1; | |
8673 | ||
8674 | /* Look for branches to outside of this section. */ | |
8675 | local_syms = NULL; | |
8676 | ret = 0; | |
8677 | htab = ppc_hash_table (info); | |
8678 | for (rel = relstart; rel < relstart + isec->reloc_count; ++rel) | |
9b5ecbd0 | 8679 | { |
4c52953f AM |
8680 | enum elf_ppc64_reloc_type r_type; |
8681 | unsigned long r_symndx; | |
8682 | struct elf_link_hash_entry *h; | |
8683 | Elf_Internal_Sym *sym; | |
8684 | asection *sym_sec; | |
8685 | long *opd_adjust; | |
8686 | bfd_vma sym_value; | |
8687 | bfd_vma dest; | |
8688 | ||
8689 | r_type = ELF64_R_TYPE (rel->r_info); | |
8690 | if (r_type != R_PPC64_REL24 | |
8691 | && r_type != R_PPC64_REL14 | |
8692 | && r_type != R_PPC64_REL14_BRTAKEN | |
8693 | && r_type != R_PPC64_REL14_BRNTAKEN) | |
8694 | continue; | |
8695 | ||
8696 | r_symndx = ELF64_R_SYM (rel->r_info); | |
8697 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, r_symndx, | |
8698 | isec->owner)) | |
9b5ecbd0 | 8699 | { |
4c52953f AM |
8700 | ret = -1; |
8701 | break; | |
9b5ecbd0 | 8702 | } |
9b5ecbd0 | 8703 | |
2917689a AM |
8704 | /* Calls to dynamic lib functions go through a plt call stub |
8705 | that uses r2. Branches to undefined symbols might be a call | |
8706 | using old-style dot symbols that can be satisfied by a plt | |
8707 | call into a new-style dynamic library. */ | |
4c52953f | 8708 | if (sym_sec == NULL) |
2917689a AM |
8709 | { |
8710 | struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h; | |
8711 | if (eh != NULL | |
8712 | && eh->oh != NULL | |
8713 | && eh->oh->elf.plt.plist != NULL) | |
8714 | { | |
8715 | ret = 1; | |
8716 | break; | |
8717 | } | |
4c52953f | 8718 | |
2917689a AM |
8719 | /* Ignore other undefined symbols. */ |
8720 | continue; | |
8721 | } | |
8722 | ||
8723 | /* Assume branches to other sections not included in the link need | |
8724 | stubs too, to cover -R and absolute syms. */ | |
4c52953f AM |
8725 | if (sym_sec->output_section == NULL) |
8726 | { | |
8727 | ret = 1; | |
8728 | break; | |
8729 | } | |
8730 | ||
8731 | if (h == NULL) | |
8732 | sym_value = sym->st_value; | |
8733 | else | |
8734 | { | |
8735 | if (h->root.type != bfd_link_hash_defined | |
8736 | && h->root.type != bfd_link_hash_defweak) | |
8737 | abort (); | |
8738 | sym_value = h->root.u.def.value; | |
8739 | } | |
8740 | sym_value += rel->r_addend; | |
8741 | ||
8742 | /* If this branch reloc uses an opd sym, find the code section. */ | |
8743 | opd_adjust = get_opd_info (sym_sec); | |
8744 | if (opd_adjust != NULL) | |
8745 | { | |
4c52953f AM |
8746 | if (h == NULL) |
8747 | { | |
8748 | long adjust; | |
8749 | ||
8750 | adjust = opd_adjust[sym->st_value / 8]; | |
8751 | if (adjust == -1) | |
8752 | /* Assume deleted functions won't ever be called. */ | |
8753 | continue; | |
8754 | sym_value += adjust; | |
8755 | } | |
8756 | ||
8757 | dest = opd_entry_value (sym_sec, sym_value, &sym_sec, NULL); | |
8758 | if (dest == (bfd_vma) -1) | |
8759 | continue; | |
8760 | } | |
8761 | else | |
8762 | dest = (sym_value | |
8763 | + sym_sec->output_offset | |
8764 | + sym_sec->output_section->vma); | |
8765 | ||
8766 | /* Ignore branch to self. */ | |
8767 | if (sym_sec == isec) | |
8768 | continue; | |
8769 | ||
8770 | /* If the called function uses the toc, we need a stub. */ | |
8771 | if (sym_sec->has_toc_reloc | |
8772 | || sym_sec->makes_toc_func_call) | |
8773 | { | |
8774 | ret = 1; | |
8775 | break; | |
8776 | } | |
8777 | ||
8778 | /* Assume any branch that needs a long branch stub might in fact | |
8779 | need a plt_branch stub. A plt_branch stub uses r2. */ | |
8780 | else if (dest - (isec->output_offset | |
8781 | + isec->output_section->vma | |
8782 | + rel->r_offset) + (1 << 25) >= (2 << 25)) | |
9b5ecbd0 AM |
8783 | { |
8784 | ret = 1; | |
8785 | break; | |
8786 | } | |
4c52953f AM |
8787 | |
8788 | /* If calling back to a section in the process of being tested, we | |
8789 | can't say for sure that no toc adjusting stubs are needed, so | |
8790 | don't return zero. */ | |
8791 | else if (sym_sec->call_check_in_progress) | |
8792 | ret = 2; | |
8793 | ||
8794 | /* Branches to another section that itself doesn't have any TOC | |
8795 | references are OK. Recursively call ourselves to check. */ | |
8796 | else if (sym_sec->id <= htab->top_id | |
8797 | && htab->stub_group[sym_sec->id].toc_off == 0) | |
8798 | { | |
8799 | int recur; | |
8800 | ||
8801 | /* Mark current section as indeterminate, so that other | |
8802 | sections that call back to current won't be marked as | |
8803 | known. */ | |
8804 | isec->call_check_in_progress = 1; | |
8805 | recur = toc_adjusting_stub_needed (info, sym_sec); | |
8806 | isec->call_check_in_progress = 0; | |
8807 | ||
8808 | if (recur < 0) | |
8809 | { | |
8810 | /* An error. Exit. */ | |
8811 | ret = -1; | |
8812 | break; | |
8813 | } | |
8814 | else if (recur <= 1) | |
8815 | { | |
8816 | /* Known result. Mark as checked and set section flag. */ | |
8817 | htab->stub_group[sym_sec->id].toc_off = 1; | |
8818 | if (recur != 0) | |
8819 | { | |
8820 | sym_sec->makes_toc_func_call = 1; | |
8821 | ret = 1; | |
8822 | break; | |
8823 | } | |
8824 | } | |
8825 | else | |
8826 | { | |
8827 | /* Unknown result. Continue checking. */ | |
8828 | ret = 2; | |
8829 | } | |
8830 | } | |
9b5ecbd0 AM |
8831 | } |
8832 | ||
4c52953f AM |
8833 | if (local_syms != NULL |
8834 | && (elf_tdata (isec->owner)->symtab_hdr.contents | |
8835 | != (unsigned char *) local_syms)) | |
8836 | free (local_syms); | |
8837 | if (elf_section_data (isec)->relocs != relstart) | |
8838 | free (relstart); | |
8839 | ||
9b5ecbd0 AM |
8840 | return ret; |
8841 | } | |
8842 | ||
721956f4 AM |
8843 | /* The linker repeatedly calls this function for each input section, |
8844 | in the order that input sections are linked into output sections. | |
8845 | Build lists of input sections to determine groupings between which | |
8846 | we may insert linker stubs. */ | |
8847 | ||
9b5ecbd0 | 8848 | bfd_boolean |
4ce794b7 | 8849 | ppc64_elf_next_input_section (struct bfd_link_info *info, asection *isec) |
721956f4 AM |
8850 | { |
8851 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
8852 | ||
734b6cf9 AM |
8853 | if ((isec->output_section->flags & SEC_CODE) != 0 |
8854 | && isec->output_section->index <= htab->top_index) | |
721956f4 | 8855 | { |
734b6cf9 | 8856 | asection **list = htab->input_list + isec->output_section->index; |
3d6f9012 | 8857 | /* Steal the link_sec pointer for our list. */ |
721956f4 | 8858 | #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec) |
3d6f9012 AM |
8859 | /* This happens to make the list in reverse order, |
8860 | which is what we want. */ | |
734b6cf9 AM |
8861 | PREV_SEC (isec) = *list; |
8862 | *list = isec; | |
721956f4 | 8863 | } |
ad8e1ba5 | 8864 | |
4c52953f | 8865 | if (htab->multi_toc_needed) |
9b5ecbd0 | 8866 | { |
4c52953f AM |
8867 | /* If a code section has a function that uses the TOC then we need |
8868 | to use the right TOC (obviously). Also, make sure that .opd gets | |
8869 | the correct TOC value for R_PPC64_TOC relocs that don't have or | |
8870 | can't find their function symbol (shouldn't ever happen now). */ | |
8871 | if (isec->has_toc_reloc || (isec->flags & SEC_CODE) == 0) | |
8872 | { | |
8873 | if (elf_gp (isec->owner) != 0) | |
8874 | htab->toc_curr = elf_gp (isec->owner); | |
8875 | } | |
8876 | else if (htab->stub_group[isec->id].toc_off == 0) | |
8877 | { | |
8878 | int ret = toc_adjusting_stub_needed (info, isec); | |
8879 | if (ret < 0) | |
8880 | return FALSE; | |
8881 | else | |
8882 | isec->makes_toc_func_call = ret & 1; | |
8883 | } | |
9b5ecbd0 | 8884 | } |
ad8e1ba5 AM |
8885 | |
8886 | /* Functions that don't use the TOC can belong in any TOC group. | |
8887 | Use the last TOC base. This happens to make _init and _fini | |
8888 | pasting work. */ | |
8889 | htab->stub_group[isec->id].toc_off = htab->toc_curr; | |
9b5ecbd0 | 8890 | return TRUE; |
721956f4 AM |
8891 | } |
8892 | ||
8893 | /* See whether we can group stub sections together. Grouping stub | |
8894 | sections may result in fewer stubs. More importantly, we need to | |
8895 | put all .init* and .fini* stubs at the beginning of the .init or | |
8896 | .fini output sections respectively, because glibc splits the | |
8897 | _init and _fini functions into multiple parts. Putting a stub in | |
8898 | the middle of a function is not a good idea. */ | |
8899 | ||
8900 | static void | |
4ce794b7 AM |
8901 | group_sections (struct ppc_link_hash_table *htab, |
8902 | bfd_size_type stub_group_size, | |
8903 | bfd_boolean stubs_always_before_branch) | |
721956f4 | 8904 | { |
734b6cf9 AM |
8905 | asection **list = htab->input_list + htab->top_index; |
8906 | do | |
721956f4 | 8907 | { |
734b6cf9 AM |
8908 | asection *tail = *list; |
8909 | while (tail != NULL) | |
721956f4 | 8910 | { |
734b6cf9 AM |
8911 | asection *curr; |
8912 | asection *prev; | |
8913 | bfd_size_type total; | |
8914 | bfd_boolean big_sec; | |
8915 | bfd_vma curr_toc; | |
8916 | ||
8917 | curr = tail; | |
eea6121a | 8918 | total = tail->size; |
5c3dead3 AM |
8919 | big_sec = total > stub_group_size; |
8920 | if (big_sec) | |
8921 | (*_bfd_error_handler) (_("%B section %A exceeds stub group size"), | |
8922 | tail->owner, tail); | |
734b6cf9 AM |
8923 | curr_toc = htab->stub_group[tail->id].toc_off; |
8924 | ||
8925 | while ((prev = PREV_SEC (curr)) != NULL | |
8926 | && ((total += curr->output_offset - prev->output_offset) | |
ad8e1ba5 AM |
8927 | < stub_group_size) |
8928 | && htab->stub_group[prev->id].toc_off == curr_toc) | |
734b6cf9 AM |
8929 | curr = prev; |
8930 | ||
8931 | /* OK, the size from the start of CURR to the end is less | |
8932 | than stub_group_size and thus can be handled by one stub | |
8933 | section. (or the tail section is itself larger than | |
8934 | stub_group_size, in which case we may be toast.) We | |
8935 | should really be keeping track of the total size of stubs | |
8936 | added here, as stubs contribute to the final output | |
8937 | section size. That's a little tricky, and this way will | |
8938 | only break if stubs added make the total size more than | |
8939 | 2^25, ie. for the default stub_group_size, if stubs total | |
8940 | more than 2097152 bytes, or nearly 75000 plt call stubs. */ | |
8941 | do | |
721956f4 AM |
8942 | { |
8943 | prev = PREV_SEC (tail); | |
734b6cf9 | 8944 | /* Set up this stub group. */ |
721956f4 AM |
8945 | htab->stub_group[tail->id].link_sec = curr; |
8946 | } | |
734b6cf9 AM |
8947 | while (tail != curr && (tail = prev) != NULL); |
8948 | ||
8949 | /* But wait, there's more! Input sections up to stub_group_size | |
8950 | bytes before the stub section can be handled by it too. | |
8951 | Don't do this if we have a really large section after the | |
8952 | stubs, as adding more stubs increases the chance that | |
8953 | branches may not reach into the stub section. */ | |
8954 | if (!stubs_always_before_branch && !big_sec) | |
8955 | { | |
8956 | total = 0; | |
8957 | while (prev != NULL | |
8958 | && ((total += tail->output_offset - prev->output_offset) | |
8959 | < stub_group_size) | |
8960 | && htab->stub_group[prev->id].toc_off == curr_toc) | |
8961 | { | |
8962 | tail = prev; | |
8963 | prev = PREV_SEC (tail); | |
8964 | htab->stub_group[tail->id].link_sec = curr; | |
8965 | } | |
8966 | } | |
8967 | tail = prev; | |
721956f4 AM |
8968 | } |
8969 | } | |
734b6cf9 AM |
8970 | while (list-- != htab->input_list); |
8971 | free (htab->input_list); | |
721956f4 AM |
8972 | #undef PREV_SEC |
8973 | } | |
8974 | ||
721956f4 AM |
8975 | /* Determine and set the size of the stub section for a final link. |
8976 | ||
8977 | The basic idea here is to examine all the relocations looking for | |
8978 | PC-relative calls to a target that is unreachable with a "bl" | |
8979 | instruction. */ | |
8980 | ||
b34976b6 | 8981 | bfd_boolean |
4ce794b7 | 8982 | ppc64_elf_size_stubs (bfd *output_bfd, |
4ce794b7 AM |
8983 | struct bfd_link_info *info, |
8984 | bfd_signed_vma group_size, | |
8985 | asection *(*add_stub_section) (const char *, asection *), | |
8986 | void (*layout_sections_again) (void)) | |
721956f4 AM |
8987 | { |
8988 | bfd_size_type stub_group_size; | |
b34976b6 | 8989 | bfd_boolean stubs_always_before_branch; |
721956f4 AM |
8990 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
8991 | ||
8992 | /* Stash our params away. */ | |
721956f4 AM |
8993 | htab->add_stub_section = add_stub_section; |
8994 | htab->layout_sections_again = layout_sections_again; | |
8995 | stubs_always_before_branch = group_size < 0; | |
8996 | if (group_size < 0) | |
8997 | stub_group_size = -group_size; | |
8998 | else | |
8999 | stub_group_size = group_size; | |
9000 | if (stub_group_size == 1) | |
9001 | { | |
9002 | /* Default values. */ | |
58ac9f71 AM |
9003 | if (stubs_always_before_branch) |
9004 | { | |
9005 | stub_group_size = 0x1e00000; | |
9006 | if (htab->has_14bit_branch) | |
9007 | stub_group_size = 0x7800; | |
9008 | } | |
9009 | else | |
9010 | { | |
9011 | stub_group_size = 0x1c00000; | |
9012 | if (htab->has_14bit_branch) | |
9013 | stub_group_size = 0x7000; | |
9014 | } | |
721956f4 AM |
9015 | } |
9016 | ||
9017 | group_sections (htab, stub_group_size, stubs_always_before_branch); | |
9018 | ||
721956f4 AM |
9019 | while (1) |
9020 | { | |
9021 | bfd *input_bfd; | |
9022 | unsigned int bfd_indx; | |
9023 | asection *stub_sec; | |
721956f4 AM |
9024 | |
9025 | htab->stub_iteration += 1; | |
721956f4 AM |
9026 | |
9027 | for (input_bfd = info->input_bfds, bfd_indx = 0; | |
9028 | input_bfd != NULL; | |
9029 | input_bfd = input_bfd->link_next, bfd_indx++) | |
9030 | { | |
9031 | Elf_Internal_Shdr *symtab_hdr; | |
9032 | asection *section; | |
6cdc0ccc | 9033 | Elf_Internal_Sym *local_syms = NULL; |
721956f4 | 9034 | |
67f93c31 AM |
9035 | if (!is_ppc64_elf_target (input_bfd->xvec)) |
9036 | continue; | |
9037 | ||
721956f4 AM |
9038 | /* We'll need the symbol table in a second. */ |
9039 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
9040 | if (symtab_hdr->sh_info == 0) | |
9041 | continue; | |
9042 | ||
721956f4 AM |
9043 | /* Walk over each section attached to the input bfd. */ |
9044 | for (section = input_bfd->sections; | |
9045 | section != NULL; | |
9046 | section = section->next) | |
9047 | { | |
721956f4 | 9048 | Elf_Internal_Rela *internal_relocs, *irelaend, *irela; |
721956f4 AM |
9049 | |
9050 | /* If there aren't any relocs, then there's nothing more | |
9051 | to do. */ | |
9052 | if ((section->flags & SEC_RELOC) == 0 | |
9053 | || section->reloc_count == 0) | |
9054 | continue; | |
9055 | ||
9056 | /* If this section is a link-once section that will be | |
9057 | discarded, then don't create any stubs. */ | |
9058 | if (section->output_section == NULL | |
9059 | || section->output_section->owner != output_bfd) | |
9060 | continue; | |
9061 | ||
1e2f5b6e AM |
9062 | /* Get the relocs. */ |
9063 | internal_relocs | |
4ce794b7 | 9064 | = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL, |
45d6a902 | 9065 | info->keep_memory); |
721956f4 | 9066 | if (internal_relocs == NULL) |
1e2f5b6e | 9067 | goto error_ret_free_local; |
721956f4 AM |
9068 | |
9069 | /* Now examine each relocation. */ | |
9070 | irela = internal_relocs; | |
9071 | irelaend = irela + section->reloc_count; | |
9072 | for (; irela < irelaend; irela++) | |
9073 | { | |
4ce794b7 AM |
9074 | enum elf_ppc64_reloc_type r_type; |
9075 | unsigned int r_indx; | |
721956f4 AM |
9076 | enum ppc_stub_type stub_type; |
9077 | struct ppc_stub_hash_entry *stub_entry; | |
8387904d | 9078 | asection *sym_sec, *code_sec; |
721956f4 AM |
9079 | bfd_vma sym_value; |
9080 | bfd_vma destination; | |
8843416a | 9081 | bfd_boolean ok_dest; |
721956f4 | 9082 | struct ppc_link_hash_entry *hash; |
8387904d | 9083 | struct ppc_link_hash_entry *fdh; |
411e1bfb AM |
9084 | struct elf_link_hash_entry *h; |
9085 | Elf_Internal_Sym *sym; | |
721956f4 AM |
9086 | char *stub_name; |
9087 | const asection *id_sec; | |
8387904d | 9088 | long *opd_adjust; |
721956f4 AM |
9089 | |
9090 | r_type = ELF64_R_TYPE (irela->r_info); | |
9091 | r_indx = ELF64_R_SYM (irela->r_info); | |
9092 | ||
4ce794b7 | 9093 | if (r_type >= R_PPC64_max) |
721956f4 AM |
9094 | { |
9095 | bfd_set_error (bfd_error_bad_value); | |
6cdc0ccc | 9096 | goto error_ret_free_internal; |
721956f4 AM |
9097 | } |
9098 | ||
9099 | /* Only look for stubs on branch instructions. */ | |
4ce794b7 AM |
9100 | if (r_type != R_PPC64_REL24 |
9101 | && r_type != R_PPC64_REL14 | |
9102 | && r_type != R_PPC64_REL14_BRTAKEN | |
9103 | && r_type != R_PPC64_REL14_BRNTAKEN) | |
721956f4 AM |
9104 | continue; |
9105 | ||
9106 | /* Now determine the call target, its name, value, | |
9107 | section. */ | |
411e1bfb AM |
9108 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, |
9109 | r_indx, input_bfd)) | |
9110 | goto error_ret_free_internal; | |
9111 | hash = (struct ppc_link_hash_entry *) h; | |
9112 | ||
8843416a | 9113 | ok_dest = FALSE; |
8387904d | 9114 | fdh = NULL; |
7fe2b9a6 | 9115 | sym_value = 0; |
411e1bfb | 9116 | if (hash == NULL) |
721956f4 | 9117 | { |
411e1bfb | 9118 | sym_value = sym->st_value; |
8843416a | 9119 | ok_dest = TRUE; |
721956f4 | 9120 | } |
7fe2b9a6 AM |
9121 | else if (hash->elf.root.type == bfd_link_hash_defined |
9122 | || hash->elf.root.type == bfd_link_hash_defweak) | |
9123 | { | |
9124 | sym_value = hash->elf.root.u.def.value; | |
9125 | if (sym_sec->output_section != NULL) | |
9126 | ok_dest = TRUE; | |
9127 | } | |
9128 | else if (hash->elf.root.type == bfd_link_hash_undefweak | |
9129 | || hash->elf.root.type == bfd_link_hash_undefined) | |
721956f4 | 9130 | { |
99877b66 | 9131 | /* Recognise an old ABI func code entry sym, and |
7fe2b9a6 AM |
9132 | use the func descriptor sym instead if it is |
9133 | defined. */ | |
ceb1f1ef | 9134 | if (hash->elf.root.root.string[0] == '.' |
8387904d AM |
9135 | && (fdh = get_fdh (hash, htab)) != NULL) |
9136 | { | |
8387904d AM |
9137 | if (fdh->elf.root.type == bfd_link_hash_defined |
9138 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
9139 | { | |
9140 | sym_sec = fdh->elf.root.u.def.section; | |
9141 | sym_value = fdh->elf.root.u.def.value; | |
9142 | if (sym_sec->output_section != NULL) | |
9143 | ok_dest = TRUE; | |
9144 | } | |
99877b66 AM |
9145 | else |
9146 | fdh = NULL; | |
8387904d | 9147 | } |
7fe2b9a6 AM |
9148 | } |
9149 | else | |
9150 | { | |
9151 | bfd_set_error (bfd_error_bad_value); | |
9152 | goto error_ret_free_internal; | |
721956f4 AM |
9153 | } |
9154 | ||
8843416a AM |
9155 | destination = 0; |
9156 | if (ok_dest) | |
9157 | { | |
9158 | sym_value += irela->r_addend; | |
9159 | destination = (sym_value | |
9160 | + sym_sec->output_offset | |
9161 | + sym_sec->output_section->vma); | |
9162 | } | |
9163 | ||
8387904d AM |
9164 | code_sec = sym_sec; |
9165 | opd_adjust = get_opd_info (sym_sec); | |
9166 | if (opd_adjust != NULL) | |
9167 | { | |
9168 | bfd_vma dest; | |
9169 | ||
9170 | if (hash == NULL) | |
9171 | { | |
3f764659 | 9172 | long adjust = opd_adjust[sym_value / 8]; |
8387904d AM |
9173 | if (adjust == -1) |
9174 | continue; | |
9175 | sym_value += adjust; | |
9176 | } | |
9177 | dest = opd_entry_value (sym_sec, sym_value, | |
9178 | &code_sec, &sym_value); | |
9179 | if (dest != (bfd_vma) -1) | |
9180 | { | |
9181 | destination = dest; | |
9182 | if (fdh != NULL) | |
9183 | { | |
9184 | /* Fixup old ABI sym to point at code | |
9185 | entry. */ | |
99877b66 | 9186 | hash->elf.root.type = bfd_link_hash_defweak; |
8387904d AM |
9187 | hash->elf.root.u.def.section = code_sec; |
9188 | hash->elf.root.u.def.value = sym_value; | |
9189 | } | |
9190 | } | |
9191 | } | |
9192 | ||
721956f4 AM |
9193 | /* Determine what (if any) linker stub is needed. */ |
9194 | stub_type = ppc_type_of_stub (section, irela, &hash, | |
9195 | destination); | |
ad8e1ba5 AM |
9196 | |
9197 | if (stub_type != ppc_stub_plt_call) | |
9198 | { | |
9199 | /* Check whether we need a TOC adjusting stub. | |
9200 | Since the linker pastes together pieces from | |
9201 | different object files when creating the | |
9202 | _init and _fini functions, it may be that a | |
9203 | call to what looks like a local sym is in | |
9204 | fact a call needing a TOC adjustment. */ | |
8387904d AM |
9205 | if (code_sec != NULL |
9206 | && code_sec->output_section != NULL | |
9207 | && (htab->stub_group[code_sec->id].toc_off | |
9b5ecbd0 | 9208 | != htab->stub_group[section->id].toc_off) |
4c52953f AM |
9209 | && (code_sec->has_toc_reloc |
9210 | || code_sec->makes_toc_func_call)) | |
ad8e1ba5 AM |
9211 | stub_type = ppc_stub_long_branch_r2off; |
9212 | } | |
9213 | ||
721956f4 AM |
9214 | if (stub_type == ppc_stub_none) |
9215 | continue; | |
9216 | ||
411e1bfb AM |
9217 | /* __tls_get_addr calls might be eliminated. */ |
9218 | if (stub_type != ppc_stub_plt_call | |
9219 | && hash != NULL | |
8387904d AM |
9220 | && (hash == htab->tls_get_addr |
9221 | || hash == htab->tls_get_addr_fd) | |
411e1bfb AM |
9222 | && section->has_tls_reloc |
9223 | && irela != internal_relocs) | |
9224 | { | |
9225 | /* Get tls info. */ | |
e7b938ca | 9226 | char *tls_mask; |
411e1bfb | 9227 | |
0d4792f7 | 9228 | if (!get_tls_mask (&tls_mask, NULL, &local_syms, |
411e1bfb AM |
9229 | irela - 1, input_bfd)) |
9230 | goto error_ret_free_internal; | |
e7b938ca | 9231 | if (*tls_mask != 0) |
411e1bfb AM |
9232 | continue; |
9233 | } | |
9234 | ||
721956f4 AM |
9235 | /* Support for grouping stub sections. */ |
9236 | id_sec = htab->stub_group[section->id].link_sec; | |
9237 | ||
9238 | /* Get the name of this stub. */ | |
9239 | stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela); | |
9240 | if (!stub_name) | |
9241 | goto error_ret_free_internal; | |
9242 | ||
9243 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, | |
b34976b6 | 9244 | stub_name, FALSE, FALSE); |
721956f4 AM |
9245 | if (stub_entry != NULL) |
9246 | { | |
9247 | /* The proper stub has already been created. */ | |
9248 | free (stub_name); | |
9249 | continue; | |
9250 | } | |
9251 | ||
9252 | stub_entry = ppc_add_stub (stub_name, section, htab); | |
9253 | if (stub_entry == NULL) | |
9254 | { | |
9255 | free (stub_name); | |
6cdc0ccc AM |
9256 | error_ret_free_internal: |
9257 | if (elf_section_data (section)->relocs == NULL) | |
9258 | free (internal_relocs); | |
9259 | error_ret_free_local: | |
9260 | if (local_syms != NULL | |
9261 | && (symtab_hdr->contents | |
9262 | != (unsigned char *) local_syms)) | |
9263 | free (local_syms); | |
b34976b6 | 9264 | return FALSE; |
721956f4 AM |
9265 | } |
9266 | ||
ad8e1ba5 | 9267 | stub_entry->stub_type = stub_type; |
721956f4 | 9268 | stub_entry->target_value = sym_value; |
8387904d | 9269 | stub_entry->target_section = code_sec; |
721956f4 | 9270 | stub_entry->h = hash; |
411e1bfb | 9271 | stub_entry->addend = irela->r_addend; |
ee75fd95 AM |
9272 | |
9273 | if (stub_entry->h != NULL) | |
9274 | htab->stub_globals += 1; | |
721956f4 AM |
9275 | } |
9276 | ||
9277 | /* We're done with the internal relocs, free them. */ | |
6cdc0ccc | 9278 | if (elf_section_data (section)->relocs != internal_relocs) |
1e2f5b6e | 9279 | free (internal_relocs); |
721956f4 | 9280 | } |
6cdc0ccc AM |
9281 | |
9282 | if (local_syms != NULL | |
9283 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
9284 | { | |
9285 | if (!info->keep_memory) | |
9286 | free (local_syms); | |
9287 | else | |
9288 | symtab_hdr->contents = (unsigned char *) local_syms; | |
9289 | } | |
721956f4 AM |
9290 | } |
9291 | ||
5c3dead3 | 9292 | /* We may have added some stubs. Find out the new size of the |
721956f4 AM |
9293 | stub sections. */ |
9294 | for (stub_sec = htab->stub_bfd->sections; | |
9295 | stub_sec != NULL; | |
9296 | stub_sec = stub_sec->next) | |
e717da7e | 9297 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) |
ee75fd95 | 9298 | { |
5c3dead3 | 9299 | stub_sec->rawsize = stub_sec->size; |
ee75fd95 AM |
9300 | stub_sec->size = 0; |
9301 | stub_sec->reloc_count = 0; | |
9302 | } | |
eea6121a AM |
9303 | |
9304 | htab->brlt->size = 0; | |
ee75fd95 | 9305 | if (htab->relbrlt != NULL) |
eea6121a | 9306 | htab->relbrlt->size = 0; |
721956f4 | 9307 | |
63bc6f6c | 9308 | bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, info); |
721956f4 | 9309 | |
5c3dead3 AM |
9310 | for (stub_sec = htab->stub_bfd->sections; |
9311 | stub_sec != NULL; | |
9312 | stub_sec = stub_sec->next) | |
9313 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0 | |
9314 | && stub_sec->rawsize != stub_sec->size) | |
9315 | break; | |
9316 | ||
9317 | /* Exit from this loop when no stubs have been added, and no stubs | |
9318 | have changed size. */ | |
9319 | if (stub_sec == NULL) | |
9320 | break; | |
9321 | ||
721956f4 AM |
9322 | /* Ask the linker to do its stuff. */ |
9323 | (*htab->layout_sections_again) (); | |
9324 | } | |
9325 | ||
c456f082 | 9326 | /* It would be nice to strip htab->brlt from the output if the |
afbe61cf AM |
9327 | section is empty, but it's too late. If we strip sections here, |
9328 | the dynamic symbol table is corrupted since the section symbol | |
9329 | for the stripped section isn't written. */ | |
721956f4 | 9330 | |
b34976b6 | 9331 | return TRUE; |
721956f4 AM |
9332 | } |
9333 | ||
9334 | /* Called after we have determined section placement. If sections | |
805fc799 | 9335 | move, we'll be called again. Provide a value for TOCstart. */ |
721956f4 | 9336 | |
805fc799 | 9337 | bfd_vma |
4ce794b7 | 9338 | ppc64_elf_toc (bfd *obfd) |
721956f4 | 9339 | { |
805fc799 AM |
9340 | asection *s; |
9341 | bfd_vma TOCstart; | |
721956f4 | 9342 | |
805fc799 AM |
9343 | /* The TOC consists of sections .got, .toc, .tocbss, .plt in that |
9344 | order. The TOC starts where the first of these sections starts. */ | |
9345 | s = bfd_get_section_by_name (obfd, ".got"); | |
9346 | if (s == NULL) | |
9347 | s = bfd_get_section_by_name (obfd, ".toc"); | |
9348 | if (s == NULL) | |
9349 | s = bfd_get_section_by_name (obfd, ".tocbss"); | |
9350 | if (s == NULL) | |
9351 | s = bfd_get_section_by_name (obfd, ".plt"); | |
9352 | if (s == NULL) | |
9353 | { | |
9354 | /* This may happen for | |
9355 | o references to TOC base (SYM@toc / TOC[tc0]) without a | |
9356 | .toc directive | |
9357 | o bad linker script | |
9358 | o --gc-sections and empty TOC sections | |
9359 | ||
9360 | FIXME: Warn user? */ | |
9361 | ||
9362 | /* Look for a likely section. We probably won't even be | |
9363 | using TOCstart. */ | |
9364 | for (s = obfd->sections; s != NULL; s = s->next) | |
9365 | if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY)) | |
9366 | == (SEC_ALLOC | SEC_SMALL_DATA)) | |
9367 | break; | |
721956f4 | 9368 | if (s == NULL) |
805fc799 AM |
9369 | for (s = obfd->sections; s != NULL; s = s->next) |
9370 | if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA)) | |
9371 | == (SEC_ALLOC | SEC_SMALL_DATA)) | |
9372 | break; | |
721956f4 | 9373 | if (s == NULL) |
805fc799 AM |
9374 | for (s = obfd->sections; s != NULL; s = s->next) |
9375 | if ((s->flags & (SEC_ALLOC | SEC_READONLY)) == SEC_ALLOC) | |
9376 | break; | |
721956f4 | 9377 | if (s == NULL) |
805fc799 AM |
9378 | for (s = obfd->sections; s != NULL; s = s->next) |
9379 | if ((s->flags & SEC_ALLOC) == SEC_ALLOC) | |
9380 | break; | |
9381 | } | |
721956f4 | 9382 | |
805fc799 AM |
9383 | TOCstart = 0; |
9384 | if (s != NULL) | |
9385 | TOCstart = s->output_section->vma + s->output_offset; | |
721956f4 | 9386 | |
805fc799 | 9387 | return TOCstart; |
721956f4 AM |
9388 | } |
9389 | ||
9390 | /* Build all the stubs associated with the current output file. | |
9391 | The stubs are kept in a hash table attached to the main linker | |
9392 | hash table. This function is called via gldelf64ppc_finish. */ | |
9393 | ||
b34976b6 | 9394 | bfd_boolean |
4ce794b7 AM |
9395 | ppc64_elf_build_stubs (bfd_boolean emit_stub_syms, |
9396 | struct bfd_link_info *info, | |
9397 | char **stats) | |
5d1634d7 AM |
9398 | { |
9399 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
721956f4 | 9400 | asection *stub_sec; |
5d1634d7 | 9401 | bfd_byte *p; |
e717da7e | 9402 | int stub_sec_count = 0; |
5d1634d7 | 9403 | |
ad8e1ba5 | 9404 | htab->emit_stub_syms = emit_stub_syms; |
eea6121a AM |
9405 | |
9406 | /* Allocate memory to hold the linker stubs. */ | |
721956f4 AM |
9407 | for (stub_sec = htab->stub_bfd->sections; |
9408 | stub_sec != NULL; | |
9409 | stub_sec = stub_sec->next) | |
eea6121a AM |
9410 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0 |
9411 | && stub_sec->size != 0) | |
e717da7e | 9412 | { |
eea6121a AM |
9413 | stub_sec->contents = bfd_zalloc (htab->stub_bfd, stub_sec->size); |
9414 | if (stub_sec->contents == NULL) | |
9415 | return FALSE; | |
9416 | /* We want to check that built size is the same as calculated | |
9417 | size. rawsize is a convenient location to use. */ | |
9418 | stub_sec->rawsize = stub_sec->size; | |
9419 | stub_sec->size = 0; | |
e717da7e | 9420 | } |
5d1634d7 | 9421 | |
4ce794b7 | 9422 | if (htab->plt != NULL) |
5d1634d7 | 9423 | { |
9f951329 | 9424 | unsigned int indx; |
ad8e1ba5 | 9425 | bfd_vma plt0; |
9f951329 | 9426 | |
721956f4 | 9427 | /* Build the .glink plt call stub. */ |
4ce794b7 AM |
9428 | plt0 = (htab->plt->output_section->vma |
9429 | + htab->plt->output_offset | |
9430 | - (htab->glink->output_section->vma | |
9431 | + htab->glink->output_offset | |
ad8e1ba5 AM |
9432 | + GLINK_CALL_STUB_SIZE)); |
9433 | if (plt0 + 0x80008000 > 0xffffffff) | |
721956f4 | 9434 | { |
ad8e1ba5 AM |
9435 | (*_bfd_error_handler) (_(".glink and .plt too far apart")); |
9436 | bfd_set_error (bfd_error_bad_value); | |
9437 | return FALSE; | |
721956f4 | 9438 | } |
721956f4 | 9439 | |
97b639ba AM |
9440 | if (htab->emit_stub_syms) |
9441 | { | |
9442 | struct elf_link_hash_entry *h; | |
9443 | h = elf_link_hash_lookup (&htab->elf, "__glink", TRUE, FALSE, FALSE); | |
9444 | if (h == NULL) | |
9445 | return FALSE; | |
9446 | if (h->root.type == bfd_link_hash_new) | |
9447 | { | |
9448 | h->root.type = bfd_link_hash_defined; | |
9449 | h->root.u.def.section = htab->glink; | |
9450 | h->root.u.def.value = 0; | |
f5385ebf AM |
9451 | h->ref_regular = 1; |
9452 | h->def_regular = 1; | |
9453 | h->ref_regular_nonweak = 1; | |
9454 | h->forced_local = 1; | |
9455 | h->non_elf = 0; | |
97b639ba AM |
9456 | } |
9457 | } | |
4ce794b7 AM |
9458 | p = htab->glink->contents; |
9459 | bfd_put_32 (htab->glink->owner, MFCTR_R12, p); | |
ad8e1ba5 | 9460 | p += 4; |
4ce794b7 | 9461 | bfd_put_32 (htab->glink->owner, SLDI_R11_R0_3, p); |
ad8e1ba5 | 9462 | p += 4; |
4ce794b7 | 9463 | bfd_put_32 (htab->glink->owner, ADDIC_R2_R0_32K, p); |
ad8e1ba5 | 9464 | p += 4; |
4ce794b7 | 9465 | bfd_put_32 (htab->glink->owner, SUB_R12_R12_R11, p); |
ad8e1ba5 | 9466 | p += 4; |
4ce794b7 | 9467 | bfd_put_32 (htab->glink->owner, SRADI_R2_R2_63, p); |
ad8e1ba5 | 9468 | p += 4; |
4ce794b7 | 9469 | bfd_put_32 (htab->glink->owner, SLDI_R11_R0_2, p); |
ad8e1ba5 | 9470 | p += 4; |
4ce794b7 | 9471 | bfd_put_32 (htab->glink->owner, AND_R2_R2_R11, p); |
ad8e1ba5 | 9472 | p += 4; |
4ce794b7 | 9473 | bfd_put_32 (htab->glink->owner, SUB_R12_R12_R11, p); |
ad8e1ba5 | 9474 | p += 4; |
4ce794b7 | 9475 | bfd_put_32 (htab->glink->owner, ADD_R12_R12_R2, p); |
ad8e1ba5 | 9476 | p += 4; |
4ce794b7 | 9477 | bfd_put_32 (htab->glink->owner, ADDIS_R12_R12 | PPC_HA (plt0), p); |
ad8e1ba5 | 9478 | p += 4; |
4ce794b7 | 9479 | bfd_put_32 (htab->glink->owner, LD_R11_0R12 | PPC_LO (plt0), p); |
ad8e1ba5 | 9480 | p += 4; |
4ce794b7 | 9481 | bfd_put_32 (htab->glink->owner, ADDI_R12_R12 | PPC_LO (plt0), p); |
ad8e1ba5 | 9482 | p += 4; |
4ce794b7 | 9483 | bfd_put_32 (htab->glink->owner, LD_R2_0R12 | 8, p); |
ad8e1ba5 | 9484 | p += 4; |
4ce794b7 | 9485 | bfd_put_32 (htab->glink->owner, MTCTR_R11, p); |
ad8e1ba5 | 9486 | p += 4; |
4ce794b7 | 9487 | bfd_put_32 (htab->glink->owner, LD_R11_0R12 | 16, p); |
ad8e1ba5 | 9488 | p += 4; |
4ce794b7 | 9489 | bfd_put_32 (htab->glink->owner, BCTR, p); |
ad8e1ba5 AM |
9490 | p += 4; |
9491 | ||
9f951329 AM |
9492 | /* Build the .glink lazy link call stubs. */ |
9493 | indx = 0; | |
eea6121a | 9494 | while (p < htab->glink->contents + htab->glink->size) |
9f951329 AM |
9495 | { |
9496 | if (indx < 0x8000) | |
9497 | { | |
4ce794b7 | 9498 | bfd_put_32 (htab->glink->owner, LI_R0_0 | indx, p); |
9f951329 AM |
9499 | p += 4; |
9500 | } | |
9501 | else | |
9502 | { | |
4ce794b7 | 9503 | bfd_put_32 (htab->glink->owner, LIS_R0_0 | PPC_HI (indx), p); |
9f951329 | 9504 | p += 4; |
4ce794b7 | 9505 | bfd_put_32 (htab->glink->owner, ORI_R0_R0_0 | PPC_LO (indx), p); |
9f951329 AM |
9506 | p += 4; |
9507 | } | |
4ce794b7 AM |
9508 | bfd_put_32 (htab->glink->owner, |
9509 | B_DOT | ((htab->glink->contents - p) & 0x3fffffc), p); | |
a16d5acb | 9510 | indx++; |
9f951329 AM |
9511 | p += 4; |
9512 | } | |
eea6121a | 9513 | htab->glink->rawsize = p - htab->glink->contents; |
5d1634d7 | 9514 | } |
5d1634d7 | 9515 | |
eea6121a | 9516 | if (htab->brlt->size != 0) |
721956f4 | 9517 | { |
4ce794b7 | 9518 | htab->brlt->contents = bfd_zalloc (htab->brlt->owner, |
eea6121a | 9519 | htab->brlt->size); |
4ce794b7 | 9520 | if (htab->brlt->contents == NULL) |
b34976b6 | 9521 | return FALSE; |
721956f4 | 9522 | } |
ee75fd95 | 9523 | if (htab->relbrlt != NULL && htab->relbrlt->size != 0) |
63bc6f6c AM |
9524 | { |
9525 | htab->relbrlt->contents = bfd_zalloc (htab->relbrlt->owner, | |
eea6121a | 9526 | htab->relbrlt->size); |
63bc6f6c AM |
9527 | if (htab->relbrlt->contents == NULL) |
9528 | return FALSE; | |
9529 | } | |
5d1634d7 | 9530 | |
721956f4 AM |
9531 | /* Build the stubs as directed by the stub hash table. */ |
9532 | bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info); | |
5d1634d7 | 9533 | |
721956f4 AM |
9534 | for (stub_sec = htab->stub_bfd->sections; |
9535 | stub_sec != NULL; | |
9536 | stub_sec = stub_sec->next) | |
e717da7e AM |
9537 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) |
9538 | { | |
9539 | stub_sec_count += 1; | |
eea6121a | 9540 | if (stub_sec->rawsize != stub_sec->size) |
e717da7e AM |
9541 | break; |
9542 | } | |
5d1634d7 | 9543 | |
721956f4 | 9544 | if (stub_sec != NULL |
eea6121a | 9545 | || htab->glink->rawsize != htab->glink->size) |
5d1634d7 | 9546 | { |
b34976b6 | 9547 | htab->stub_error = TRUE; |
721956f4 | 9548 | (*_bfd_error_handler) (_("stubs don't match calculated size")); |
5d1634d7 | 9549 | } |
721956f4 | 9550 | |
d2a300cf AM |
9551 | if (htab->stub_error) |
9552 | return FALSE; | |
9553 | ||
9554 | if (stats != NULL) | |
9555 | { | |
9556 | *stats = bfd_malloc (500); | |
9557 | if (*stats == NULL) | |
9558 | return FALSE; | |
9559 | ||
ee75fd95 | 9560 | sprintf (*stats, _("linker stubs in %u group%s\n" |
d2a300cf AM |
9561 | " branch %lu\n" |
9562 | " toc adjust %lu\n" | |
9563 | " long branch %lu\n" | |
9564 | " long toc adj %lu\n" | |
9565 | " plt call %lu"), | |
e717da7e | 9566 | stub_sec_count, |
ee75fd95 | 9567 | stub_sec_count == 1 ? "" : "s", |
4ce794b7 AM |
9568 | htab->stub_count[ppc_stub_long_branch - 1], |
9569 | htab->stub_count[ppc_stub_long_branch_r2off - 1], | |
9570 | htab->stub_count[ppc_stub_plt_branch - 1], | |
9571 | htab->stub_count[ppc_stub_plt_branch_r2off - 1], | |
9572 | htab->stub_count[ppc_stub_plt_call - 1]); | |
d2a300cf AM |
9573 | } |
9574 | return TRUE; | |
5bd4f169 AM |
9575 | } |
9576 | ||
99877b66 AM |
9577 | /* This function undoes the changes made by add_symbol_adjust. */ |
9578 | ||
9579 | static bfd_boolean | |
9580 | undo_symbol_twiddle (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED) | |
9581 | { | |
9582 | struct ppc_link_hash_entry *eh; | |
9583 | ||
9584 | if (h->root.type == bfd_link_hash_indirect) | |
9585 | return TRUE; | |
9586 | ||
9587 | if (h->root.type == bfd_link_hash_warning) | |
9588 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
9589 | ||
9590 | eh = (struct ppc_link_hash_entry *) h; | |
9591 | if (eh->elf.root.type != bfd_link_hash_undefweak || !eh->was_undefined) | |
9592 | return TRUE; | |
9593 | ||
9594 | eh->elf.root.type = bfd_link_hash_undefined; | |
9595 | return TRUE; | |
9596 | } | |
9597 | ||
9598 | void | |
9599 | ppc64_elf_restore_symbols (struct bfd_link_info *info) | |
9600 | { | |
9601 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
9602 | elf_link_hash_traverse (&htab->elf, undo_symbol_twiddle, info); | |
9603 | } | |
9604 | ||
60124e18 AM |
9605 | /* What to do when ld finds relocations against symbols defined in |
9606 | discarded sections. */ | |
9607 | ||
9608 | static unsigned int | |
9609 | ppc64_elf_action_discarded (asection *sec) | |
9610 | { | |
9611 | if (strcmp (".opd", sec->name) == 0) | |
9612 | return 0; | |
9613 | ||
9614 | if (strcmp (".toc", sec->name) == 0) | |
9615 | return 0; | |
9616 | ||
bce50a28 JJ |
9617 | if (strcmp (".toc1", sec->name) == 0) |
9618 | return 0; | |
9619 | ||
60124e18 AM |
9620 | return _bfd_elf_default_action_discarded (sec); |
9621 | } | |
9622 | ||
5bd4f169 AM |
9623 | /* The RELOCATE_SECTION function is called by the ELF backend linker |
9624 | to handle the relocations for a section. | |
9625 | ||
9626 | The relocs are always passed as Rela structures; if the section | |
9627 | actually uses Rel structures, the r_addend field will always be | |
9628 | zero. | |
9629 | ||
9630 | This function is responsible for adjust the section contents as | |
9631 | necessary, and (if using Rela relocs and generating a | |
1049f94e | 9632 | relocatable output file) adjusting the reloc addend as |
5bd4f169 AM |
9633 | necessary. |
9634 | ||
9635 | This function does not have to worry about setting the reloc | |
9636 | address or the reloc symbol index. | |
9637 | ||
9638 | LOCAL_SYMS is a pointer to the swapped in local symbols. | |
9639 | ||
9640 | LOCAL_SECTIONS is an array giving the section in the input file | |
9641 | corresponding to the st_shndx field of each local symbol. | |
9642 | ||
9643 | The global hash table entry for the global symbols can be found | |
9644 | via elf_sym_hashes (input_bfd). | |
9645 | ||
1049f94e | 9646 | When generating relocatable output, this function must handle |
5bd4f169 AM |
9647 | STB_LOCAL/STT_SECTION symbols specially. The output symbol is |
9648 | going to be the section symbol corresponding to the output | |
9649 | section, which means that the addend must be adjusted | |
9650 | accordingly. */ | |
9651 | ||
b34976b6 | 9652 | static bfd_boolean |
4ce794b7 AM |
9653 | ppc64_elf_relocate_section (bfd *output_bfd, |
9654 | struct bfd_link_info *info, | |
9655 | bfd *input_bfd, | |
9656 | asection *input_section, | |
9657 | bfd_byte *contents, | |
9658 | Elf_Internal_Rela *relocs, | |
9659 | Elf_Internal_Sym *local_syms, | |
9660 | asection **local_sections) | |
5bd4f169 | 9661 | { |
65f38f15 | 9662 | struct ppc_link_hash_table *htab; |
5bd4f169 AM |
9663 | Elf_Internal_Shdr *symtab_hdr; |
9664 | struct elf_link_hash_entry **sym_hashes; | |
5bd4f169 AM |
9665 | Elf_Internal_Rela *rel; |
9666 | Elf_Internal_Rela *relend; | |
411e1bfb AM |
9667 | Elf_Internal_Rela outrel; |
9668 | bfd_byte *loc; | |
411e1bfb | 9669 | struct got_entry **local_got_ents; |
5bd4f169 | 9670 | bfd_vma TOCstart; |
b34976b6 AM |
9671 | bfd_boolean ret = TRUE; |
9672 | bfd_boolean is_opd; | |
96e0dda4 | 9673 | /* Disabled until we sort out how ld should choose 'y' vs 'at'. */ |
b34976b6 | 9674 | bfd_boolean is_power4 = FALSE; |
5bd4f169 | 9675 | |
65f38f15 | 9676 | /* Initialize howto table if needed. */ |
5bd4f169 | 9677 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) |
5bd4f169 AM |
9678 | ppc_howto_init (); |
9679 | ||
65f38f15 | 9680 | htab = ppc_hash_table (info); |
ee75fd95 AM |
9681 | |
9682 | /* Don't relocate stub sections. */ | |
9683 | if (input_section->owner == htab->stub_bfd) | |
9684 | return TRUE; | |
9685 | ||
411e1bfb | 9686 | local_got_ents = elf_local_got_ents (input_bfd); |
5bd4f169 | 9687 | TOCstart = elf_gp (output_bfd); |
5bd4f169 AM |
9688 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; |
9689 | sym_hashes = elf_sym_hashes (input_bfd); | |
f0abc2a1 | 9690 | is_opd = ppc64_elf_section_data (input_section)->opd.adjust != NULL; |
65f38f15 | 9691 | |
5bd4f169 AM |
9692 | rel = relocs; |
9693 | relend = relocs + input_section->reloc_count; | |
9694 | for (; rel < relend; rel++) | |
9695 | { | |
04c9666a | 9696 | enum elf_ppc64_reloc_type r_type; |
4cc603a5 | 9697 | bfd_vma addend, orig_addend; |
5bd4f169 AM |
9698 | bfd_reloc_status_type r; |
9699 | Elf_Internal_Sym *sym; | |
9700 | asection *sec; | |
039b3fef AM |
9701 | struct elf_link_hash_entry *h_elf; |
9702 | struct ppc_link_hash_entry *h; | |
9703 | struct ppc_link_hash_entry *fdh; | |
5bd4f169 | 9704 | const char *sym_name; |
0d4792f7 | 9705 | unsigned long r_symndx, toc_symndx; |
951fd09b | 9706 | char tls_mask, tls_gd, tls_type; |
0d4792f7 | 9707 | char sym_type; |
5bd4f169 | 9708 | bfd_vma relocation; |
b34976b6 AM |
9709 | bfd_boolean unresolved_reloc; |
9710 | bfd_boolean warned; | |
50bc7936 | 9711 | unsigned long insn, mask; |
721956f4 AM |
9712 | struct ppc_stub_hash_entry *stub_entry; |
9713 | bfd_vma max_br_offset; | |
9714 | bfd_vma from; | |
5bd4f169 | 9715 | |
4ce794b7 | 9716 | r_type = ELF64_R_TYPE (rel->r_info); |
5bd4f169 | 9717 | r_symndx = ELF64_R_SYM (rel->r_info); |
ee87f2da AM |
9718 | |
9719 | /* For old style R_PPC64_TOC relocs with a zero symbol, use the | |
9720 | symbol of the previous ADDR64 reloc. The symbol gives us the | |
9721 | proper TOC base to use. */ | |
9722 | if (rel->r_info == ELF64_R_INFO (0, R_PPC64_TOC) | |
9723 | && rel != relocs | |
9724 | && ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_ADDR64 | |
9725 | && is_opd) | |
9726 | r_symndx = ELF64_R_SYM (rel[-1].r_info); | |
9727 | ||
4ce794b7 AM |
9728 | sym = NULL; |
9729 | sec = NULL; | |
039b3fef | 9730 | h_elf = NULL; |
4ce794b7 | 9731 | sym_name = NULL; |
b34976b6 AM |
9732 | unresolved_reloc = FALSE; |
9733 | warned = FALSE; | |
4cc603a5 | 9734 | orig_addend = rel->r_addend; |
65f38f15 | 9735 | |
0b13192e | 9736 | if (r_symndx < symtab_hdr->sh_info) |
5bd4f169 AM |
9737 | { |
9738 | /* It's a local symbol. */ | |
4025353c AM |
9739 | long *opd_adjust; |
9740 | ||
5bd4f169 AM |
9741 | sym = local_syms + r_symndx; |
9742 | sec = local_sections[r_symndx]; | |
26c61ae5 | 9743 | sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec); |
0d4792f7 | 9744 | sym_type = ELF64_ST_TYPE (sym->st_info); |
8517fae7 | 9745 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); |
4025353c AM |
9746 | opd_adjust = get_opd_info (sec); |
9747 | if (opd_adjust != NULL) | |
1e2f5b6e | 9748 | { |
3f764659 | 9749 | long adjust = opd_adjust[(sym->st_value + rel->r_addend) / 8]; |
4025353c AM |
9750 | if (adjust == -1) |
9751 | relocation = 0; | |
9752 | else | |
4cc603a5 AM |
9753 | { |
9754 | /* If this is a relocation against the opd section sym | |
9755 | and we have edited .opd, adjust the reloc addend so | |
9756 | that ld -r and ld --emit-relocs output is correct. | |
9757 | If it is a reloc against some other .opd symbol, | |
9758 | then the symbol value will be adjusted later. */ | |
9759 | if (ELF_ST_TYPE (sym->st_info) == STT_SECTION) | |
9760 | rel->r_addend += adjust; | |
9761 | else | |
9762 | relocation += adjust; | |
9763 | } | |
1e2f5b6e | 9764 | } |
4cc603a5 AM |
9765 | if (info->relocatable) |
9766 | continue; | |
5bd4f169 AM |
9767 | } |
9768 | else | |
9769 | { | |
4cc603a5 AM |
9770 | if (info->relocatable) |
9771 | continue; | |
b2a8e766 AM |
9772 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
9773 | r_symndx, symtab_hdr, sym_hashes, | |
039b3fef | 9774 | h_elf, sec, relocation, |
b2a8e766 | 9775 | unresolved_reloc, warned); |
039b3fef AM |
9776 | sym_name = h_elf->root.root.string; |
9777 | sym_type = h_elf->type; | |
5bd4f169 | 9778 | } |
039b3fef | 9779 | h = (struct ppc_link_hash_entry *) h_elf; |
5bd4f169 | 9780 | |
951fd09b AM |
9781 | /* TLS optimizations. Replace instruction sequences and relocs |
9782 | based on information we collected in tls_optimize. We edit | |
9783 | RELOCS so that --emit-relocs will output something sensible | |
9784 | for the final instruction stream. */ | |
9785 | tls_mask = 0; | |
9786 | tls_gd = 0; | |
0d4792f7 | 9787 | toc_symndx = 0; |
d881513a | 9788 | if (IS_PPC64_TLS_RELOC (r_type)) |
411e1bfb AM |
9789 | { |
9790 | if (h != NULL) | |
039b3fef | 9791 | tls_mask = h->tls_mask; |
411e1bfb AM |
9792 | else if (local_got_ents != NULL) |
9793 | { | |
e7b938ca AM |
9794 | char *lgot_masks; |
9795 | lgot_masks = (char *) (local_got_ents + symtab_hdr->sh_info); | |
9796 | tls_mask = lgot_masks[r_symndx]; | |
411e1bfb | 9797 | } |
0d4792f7 AM |
9798 | if (tls_mask == 0 && r_type == R_PPC64_TLS) |
9799 | { | |
9800 | /* Check for toc tls entries. */ | |
9801 | char *toc_tls; | |
9802 | ||
9803 | if (!get_tls_mask (&toc_tls, &toc_symndx, &local_syms, | |
9804 | rel, input_bfd)) | |
9805 | return FALSE; | |
9806 | ||
9807 | if (toc_tls) | |
9808 | tls_mask = *toc_tls; | |
9809 | } | |
9810 | } | |
9811 | ||
9812 | /* Check that tls relocs are used with tls syms, and non-tls | |
9813 | relocs are used with non-tls syms. */ | |
9814 | if (r_symndx != 0 | |
9815 | && r_type != R_PPC64_NONE | |
9816 | && (h == NULL | |
039b3fef AM |
9817 | || h->elf.root.type == bfd_link_hash_defined |
9818 | || h->elf.root.type == bfd_link_hash_defweak) | |
0d4792f7 AM |
9819 | && IS_PPC64_TLS_RELOC (r_type) != (sym_type == STT_TLS)) |
9820 | { | |
9821 | if (r_type == R_PPC64_TLS && tls_mask != 0) | |
9822 | /* R_PPC64_TLS is OK against a symbol in the TOC. */ | |
9823 | ; | |
9824 | else | |
9825 | (*_bfd_error_handler) | |
9826 | (sym_type == STT_TLS | |
d003868e AM |
9827 | ? _("%B(%A+0x%lx): %s used with TLS symbol %s") |
9828 | : _("%B(%A+0x%lx): %s used with non-TLS symbol %s"), | |
9829 | input_bfd, | |
9830 | input_section, | |
0d4792f7 AM |
9831 | (long) rel->r_offset, |
9832 | ppc64_elf_howto_table[r_type]->name, | |
9833 | sym_name); | |
411e1bfb AM |
9834 | } |
9835 | ||
9836 | /* Ensure reloc mapping code below stays sane. */ | |
9837 | if (R_PPC64_TOC16_LO_DS != R_PPC64_TOC16_DS + 1 | |
9838 | || R_PPC64_TOC16_LO != R_PPC64_TOC16 + 1 | |
9839 | || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TLSGD16 & 3) | |
9840 | || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TLSGD16_LO & 3) | |
9841 | || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TLSGD16_HI & 3) | |
9842 | || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TLSGD16_HA & 3) | |
9843 | || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TPREL16_DS & 3) | |
9844 | || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TPREL16_LO_DS & 3) | |
9845 | || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TPREL16_HI & 3) | |
9846 | || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TPREL16_HA & 3)) | |
9847 | abort (); | |
0d4792f7 | 9848 | |
411e1bfb AM |
9849 | switch (r_type) |
9850 | { | |
9851 | default: | |
411e1bfb AM |
9852 | break; |
9853 | ||
9854 | case R_PPC64_TOC16: | |
9855 | case R_PPC64_TOC16_LO: | |
9856 | case R_PPC64_TOC16_DS: | |
9857 | case R_PPC64_TOC16_LO_DS: | |
411e1bfb AM |
9858 | { |
9859 | /* Check for toc tls entries. */ | |
9860 | char *toc_tls; | |
951fd09b | 9861 | int retval; |
411e1bfb | 9862 | |
0d4792f7 AM |
9863 | retval = get_tls_mask (&toc_tls, &toc_symndx, &local_syms, |
9864 | rel, input_bfd); | |
951fd09b | 9865 | if (retval == 0) |
411e1bfb AM |
9866 | return FALSE; |
9867 | ||
9868 | if (toc_tls) | |
9869 | { | |
951fd09b | 9870 | tls_mask = *toc_tls; |
411e1bfb AM |
9871 | if (r_type == R_PPC64_TOC16_DS |
9872 | || r_type == R_PPC64_TOC16_LO_DS) | |
81407a69 AM |
9873 | { |
9874 | if (tls_mask != 0 | |
9875 | && (tls_mask & (TLS_DTPREL | TLS_TPREL)) == 0) | |
9876 | goto toctprel; | |
9877 | } | |
411e1bfb | 9878 | else |
951fd09b AM |
9879 | { |
9880 | /* If we found a GD reloc pair, then we might be | |
9881 | doing a GD->IE transition. */ | |
9882 | if (retval == 2) | |
9883 | { | |
9884 | tls_gd = TLS_TPRELGD; | |
9885 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
9886 | goto tls_get_addr_check; | |
9887 | } | |
9888 | else if (retval == 3) | |
9889 | { | |
9890 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) | |
9891 | goto tls_get_addr_check; | |
9892 | } | |
9893 | } | |
411e1bfb AM |
9894 | } |
9895 | } | |
9896 | break; | |
9897 | ||
9898 | case R_PPC64_GOT_TPREL16_DS: | |
9899 | case R_PPC64_GOT_TPREL16_LO_DS: | |
951fd09b AM |
9900 | if (tls_mask != 0 |
9901 | && (tls_mask & TLS_TPREL) == 0) | |
411e1bfb | 9902 | { |
81407a69 | 9903 | toctprel: |
411e1bfb AM |
9904 | insn = bfd_get_32 (output_bfd, contents + rel->r_offset - 2); |
9905 | insn &= 31 << 21; | |
9906 | insn |= 0x3c0d0000; /* addis 0,13,0 */ | |
9907 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset - 2); | |
9908 | r_type = R_PPC64_TPREL16_HA; | |
0d4792f7 AM |
9909 | if (toc_symndx != 0) |
9910 | { | |
9911 | rel->r_info = ELF64_R_INFO (toc_symndx, r_type); | |
9912 | /* We changed the symbol. Start over in order to | |
9913 | get h, sym, sec etc. right. */ | |
9914 | rel--; | |
9915 | continue; | |
9916 | } | |
9917 | else | |
9918 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
411e1bfb AM |
9919 | } |
9920 | break; | |
9921 | ||
9922 | case R_PPC64_TLS: | |
951fd09b AM |
9923 | if (tls_mask != 0 |
9924 | && (tls_mask & TLS_TPREL) == 0) | |
411e1bfb | 9925 | { |
50bc7936 | 9926 | bfd_vma rtra; |
411e1bfb | 9927 | insn = bfd_get_32 (output_bfd, contents + rel->r_offset); |
772119ce | 9928 | if ((insn & ((0x3f << 26) | (31 << 11))) |
411e1bfb AM |
9929 | == ((31 << 26) | (13 << 11))) |
9930 | rtra = insn & ((1 << 26) - (1 << 16)); | |
772119ce | 9931 | else if ((insn & ((0x3f << 26) | (31 << 16))) |
411e1bfb AM |
9932 | == ((31 << 26) | (13 << 16))) |
9933 | rtra = (insn & (31 << 21)) | ((insn & (31 << 11)) << 5); | |
9934 | else | |
9935 | abort (); | |
9936 | if ((insn & ((1 << 11) - (1 << 1))) == 266 << 1) | |
9937 | /* add -> addi. */ | |
9938 | insn = 14 << 26; | |
9939 | else if ((insn & (31 << 1)) == 23 << 1 | |
9940 | && ((insn & (31 << 6)) < 14 << 6 | |
9941 | || ((insn & (31 << 6)) >= 16 << 6 | |
9942 | && (insn & (31 << 6)) < 24 << 6))) | |
9943 | /* load and store indexed -> dform. */ | |
9944 | insn = (32 | ((insn >> 6) & 31)) << 26; | |
9945 | else if ((insn & (31 << 1)) == 21 << 1 | |
9946 | && (insn & (0x1a << 6)) == 0) | |
9947 | /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */ | |
9948 | insn = (((58 | ((insn >> 6) & 4)) << 26) | |
9949 | | ((insn >> 6) & 1)); | |
9950 | else if ((insn & (31 << 1)) == 21 << 1 | |
9951 | && (insn & ((1 << 11) - (1 << 1))) == 341 << 1) | |
9952 | /* lwax -> lwa. */ | |
9953 | insn = (58 << 26) | 2; | |
9954 | else | |
9955 | abort (); | |
9956 | insn |= rtra; | |
9957 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset); | |
411e1bfb AM |
9958 | /* Was PPC64_TLS which sits on insn boundary, now |
9959 | PPC64_TPREL16_LO which is at insn+2. */ | |
9960 | rel->r_offset += 2; | |
0d4792f7 AM |
9961 | r_type = R_PPC64_TPREL16_LO; |
9962 | if (toc_symndx != 0) | |
9963 | { | |
9964 | rel->r_info = ELF64_R_INFO (toc_symndx, r_type); | |
9965 | /* We changed the symbol. Start over in order to | |
9966 | get h, sym, sec etc. right. */ | |
9967 | rel--; | |
9968 | continue; | |
9969 | } | |
9970 | else | |
9971 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
411e1bfb AM |
9972 | } |
9973 | break; | |
9974 | ||
411e1bfb AM |
9975 | case R_PPC64_GOT_TLSGD16_HI: |
9976 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b AM |
9977 | tls_gd = TLS_TPRELGD; |
9978 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
9979 | goto tls_gdld_hi; | |
9980 | break; | |
9981 | ||
411e1bfb AM |
9982 | case R_PPC64_GOT_TLSLD16_HI: |
9983 | case R_PPC64_GOT_TLSLD16_HA: | |
951fd09b | 9984 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) |
411e1bfb | 9985 | { |
951fd09b AM |
9986 | tls_gdld_hi: |
9987 | if ((tls_mask & tls_gd) != 0) | |
9988 | r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3) | |
9989 | + R_PPC64_GOT_TPREL16_DS); | |
9990 | else | |
411e1bfb | 9991 | { |
951fd09b AM |
9992 | bfd_put_32 (output_bfd, NOP, contents + rel->r_offset); |
9993 | rel->r_offset -= 2; | |
9994 | r_type = R_PPC64_NONE; | |
411e1bfb | 9995 | } |
951fd09b | 9996 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); |
411e1bfb AM |
9997 | } |
9998 | break; | |
9999 | ||
951fd09b AM |
10000 | case R_PPC64_GOT_TLSGD16: |
10001 | case R_PPC64_GOT_TLSGD16_LO: | |
10002 | tls_gd = TLS_TPRELGD; | |
10003 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
10004 | goto tls_get_addr_check; | |
10005 | break; | |
411e1bfb | 10006 | |
951fd09b AM |
10007 | case R_PPC64_GOT_TLSLD16: |
10008 | case R_PPC64_GOT_TLSLD16_LO: | |
10009 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) | |
10010 | { | |
10011 | tls_get_addr_check: | |
10012 | if (rel + 1 < relend) | |
411e1bfb | 10013 | { |
951fd09b AM |
10014 | enum elf_ppc64_reloc_type r_type2; |
10015 | unsigned long r_symndx2; | |
10016 | struct elf_link_hash_entry *h2; | |
10017 | bfd_vma insn1, insn2, insn3; | |
10018 | bfd_vma offset; | |
10019 | ||
10020 | /* The next instruction should be a call to | |
10021 | __tls_get_addr. Peek at the reloc to be sure. */ | |
4ce794b7 | 10022 | r_type2 = ELF64_R_TYPE (rel[1].r_info); |
951fd09b AM |
10023 | r_symndx2 = ELF64_R_SYM (rel[1].r_info); |
10024 | if (r_symndx2 < symtab_hdr->sh_info | |
10025 | || (r_type2 != R_PPC64_REL14 | |
10026 | && r_type2 != R_PPC64_REL14_BRTAKEN | |
10027 | && r_type2 != R_PPC64_REL14_BRNTAKEN | |
10028 | && r_type2 != R_PPC64_REL24)) | |
10029 | break; | |
10030 | ||
10031 | h2 = sym_hashes[r_symndx2 - symtab_hdr->sh_info]; | |
10032 | while (h2->root.type == bfd_link_hash_indirect | |
10033 | || h2->root.type == bfd_link_hash_warning) | |
10034 | h2 = (struct elf_link_hash_entry *) h2->root.u.i.link; | |
8387904d AM |
10035 | if (h2 == NULL || (h2 != &htab->tls_get_addr->elf |
10036 | && h2 != &htab->tls_get_addr_fd->elf)) | |
951fd09b AM |
10037 | break; |
10038 | ||
10039 | /* OK, it checks out. Replace the call. */ | |
10040 | offset = rel[1].r_offset; | |
10041 | insn1 = bfd_get_32 (output_bfd, | |
10042 | contents + rel->r_offset - 2); | |
10043 | insn3 = bfd_get_32 (output_bfd, | |
10044 | contents + offset + 4); | |
10045 | if ((tls_mask & tls_gd) != 0) | |
411e1bfb | 10046 | { |
951fd09b AM |
10047 | /* IE */ |
10048 | insn1 &= (1 << 26) - (1 << 2); | |
10049 | insn1 |= 58 << 26; /* ld */ | |
10050 | insn2 = 0x7c636a14; /* add 3,3,13 */ | |
10051 | rel[1].r_info = ELF64_R_INFO (r_symndx2, R_PPC64_NONE); | |
10052 | if ((tls_mask & TLS_EXPLICIT) == 0) | |
10053 | r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3) | |
10054 | + R_PPC64_GOT_TPREL16_DS); | |
10055 | else | |
10056 | r_type += R_PPC64_TOC16_DS - R_PPC64_TOC16; | |
10057 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
411e1bfb AM |
10058 | } |
10059 | else | |
951fd09b AM |
10060 | { |
10061 | /* LE */ | |
10062 | insn1 = 0x3c6d0000; /* addis 3,13,0 */ | |
10063 | insn2 = 0x38630000; /* addi 3,3,0 */ | |
10064 | if (tls_gd == 0) | |
10065 | { | |
10066 | /* Was an LD reloc. */ | |
10067 | r_symndx = 0; | |
e1918d23 AM |
10068 | rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; |
10069 | rel[1].r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; | |
951fd09b | 10070 | } |
0d4792f7 AM |
10071 | else if (toc_symndx != 0) |
10072 | r_symndx = toc_symndx; | |
951fd09b AM |
10073 | r_type = R_PPC64_TPREL16_HA; |
10074 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
10075 | rel[1].r_info = ELF64_R_INFO (r_symndx, | |
10076 | R_PPC64_TPREL16_LO); | |
10077 | rel[1].r_offset += 2; | |
10078 | } | |
10079 | if (insn3 == NOP | |
10080 | || insn3 == CROR_151515 || insn3 == CROR_313131) | |
10081 | { | |
10082 | insn3 = insn2; | |
10083 | insn2 = NOP; | |
10084 | rel[1].r_offset += 4; | |
10085 | } | |
10086 | bfd_put_32 (output_bfd, insn1, contents + rel->r_offset - 2); | |
10087 | bfd_put_32 (output_bfd, insn2, contents + offset); | |
10088 | bfd_put_32 (output_bfd, insn3, contents + offset + 4); | |
0d4792f7 | 10089 | if (tls_gd == 0 || toc_symndx != 0) |
951fd09b | 10090 | { |
0d4792f7 AM |
10091 | /* We changed the symbol. Start over in order |
10092 | to get h, sym, sec etc. right. */ | |
951fd09b AM |
10093 | rel--; |
10094 | continue; | |
10095 | } | |
411e1bfb | 10096 | } |
411e1bfb | 10097 | } |
411e1bfb AM |
10098 | break; |
10099 | ||
10100 | case R_PPC64_DTPMOD64: | |
951fd09b AM |
10101 | if (rel + 1 < relend |
10102 | && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64) | |
10103 | && rel[1].r_offset == rel->r_offset + 8) | |
411e1bfb | 10104 | { |
951fd09b AM |
10105 | if ((tls_mask & TLS_GD) == 0) |
10106 | { | |
10107 | rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_NONE); | |
10108 | if ((tls_mask & TLS_TPRELGD) != 0) | |
10109 | r_type = R_PPC64_TPREL64; | |
10110 | else | |
10111 | { | |
4ce794b7 | 10112 | bfd_put_64 (output_bfd, 1, contents + rel->r_offset); |
951fd09b AM |
10113 | r_type = R_PPC64_NONE; |
10114 | } | |
10115 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
10116 | } | |
10117 | } | |
10118 | else | |
10119 | { | |
10120 | if ((tls_mask & TLS_LD) == 0) | |
411e1bfb | 10121 | { |
4ce794b7 | 10122 | bfd_put_64 (output_bfd, 1, contents + rel->r_offset); |
411e1bfb | 10123 | r_type = R_PPC64_NONE; |
951fd09b | 10124 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); |
411e1bfb | 10125 | } |
411e1bfb AM |
10126 | } |
10127 | break; | |
10128 | ||
10129 | case R_PPC64_TPREL64: | |
951fd09b | 10130 | if ((tls_mask & TLS_TPREL) == 0) |
411e1bfb AM |
10131 | { |
10132 | r_type = R_PPC64_NONE; | |
10133 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
10134 | } | |
10135 | break; | |
10136 | } | |
10137 | ||
10138 | /* Handle other relocations that tweak non-addend part of insn. */ | |
86c76c7b | 10139 | insn = 0; |
b25116a9 AM |
10140 | max_br_offset = 1 << 25; |
10141 | addend = rel->r_addend; | |
65f38f15 | 10142 | switch (r_type) |
5bd4f169 AM |
10143 | { |
10144 | default: | |
65f38f15 | 10145 | break; |
5bd4f169 | 10146 | |
65f38f15 AM |
10147 | /* Branch taken prediction relocations. */ |
10148 | case R_PPC64_ADDR14_BRTAKEN: | |
10149 | case R_PPC64_REL14_BRTAKEN: | |
cedb70c5 KH |
10150 | insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */ |
10151 | /* Fall thru. */ | |
65f38f15 | 10152 | |
86c76c7b | 10153 | /* Branch not taken prediction relocations. */ |
65f38f15 AM |
10154 | case R_PPC64_ADDR14_BRNTAKEN: |
10155 | case R_PPC64_REL14_BRNTAKEN: | |
411e1bfb AM |
10156 | insn |= bfd_get_32 (output_bfd, |
10157 | contents + rel->r_offset) & ~(0x01 << 21); | |
b25116a9 | 10158 | /* Fall thru. */ |
86c76c7b | 10159 | |
b25116a9 AM |
10160 | case R_PPC64_REL14: |
10161 | max_br_offset = 1 << 15; | |
10162 | /* Fall thru. */ | |
5bd4f169 | 10163 | |
65f38f15 | 10164 | case R_PPC64_REL24: |
ad8e1ba5 AM |
10165 | /* Calls to functions with a different TOC, such as calls to |
10166 | shared objects, need to alter the TOC pointer. This is | |
10167 | done using a linkage stub. A REL24 branching to these | |
10168 | linkage stubs needs to be followed by a nop, as the nop | |
10169 | will be replaced with an instruction to restore the TOC | |
10170 | base pointer. */ | |
b25116a9 | 10171 | stub_entry = NULL; |
8387904d | 10172 | fdh = h; |
ad8e1ba5 | 10173 | if (((h != NULL |
039b3fef AM |
10174 | && (((fdh = h->oh) != NULL |
10175 | && fdh->elf.plt.plist != NULL) | |
10176 | || (fdh = h)->elf.plt.plist != NULL)) | |
8387904d | 10177 | || (sec != NULL |
ad8e1ba5 | 10178 | && sec->output_section != NULL |
b25116a9 | 10179 | && sec->id <= htab->top_id |
ad8e1ba5 AM |
10180 | && (htab->stub_group[sec->id].toc_off |
10181 | != htab->stub_group[input_section->id].toc_off))) | |
721956f4 | 10182 | && (stub_entry = ppc_get_stub_entry (input_section, sec, fdh, |
ad8e1ba5 AM |
10183 | rel, htab)) != NULL |
10184 | && (stub_entry->stub_type == ppc_stub_plt_call | |
10185 | || stub_entry->stub_type == ppc_stub_plt_branch_r2off | |
10186 | || stub_entry->stub_type == ppc_stub_long_branch_r2off)) | |
41bd81ab | 10187 | { |
b25116a9 | 10188 | bfd_boolean can_plt_call = FALSE; |
721956f4 | 10189 | |
eea6121a | 10190 | if (rel->r_offset + 8 <= input_section->size) |
41bd81ab | 10191 | { |
b25116a9 AM |
10192 | unsigned long nop; |
10193 | nop = bfd_get_32 (input_bfd, contents + rel->r_offset + 4); | |
10194 | if (nop == NOP | |
10195 | || nop == CROR_151515 || nop == CROR_313131) | |
41bd81ab | 10196 | { |
4ce794b7 | 10197 | bfd_put_32 (input_bfd, LD_R2_40R1, |
411e1bfb | 10198 | contents + rel->r_offset + 4); |
b25116a9 | 10199 | can_plt_call = TRUE; |
41bd81ab | 10200 | } |
5bd4f169 | 10201 | } |
721956f4 AM |
10202 | |
10203 | if (!can_plt_call) | |
10204 | { | |
ad8e1ba5 AM |
10205 | if (stub_entry->stub_type == ppc_stub_plt_call) |
10206 | { | |
10207 | /* If this is a plain branch rather than a branch | |
4fa1c237 AM |
10208 | and link, don't require a nop. However, don't |
10209 | allow tail calls in a shared library as they | |
10210 | will result in r2 being corrupted. */ | |
b25116a9 AM |
10211 | unsigned long br; |
10212 | br = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
4fa1c237 | 10213 | if (info->executable && (br & 1) == 0) |
b25116a9 | 10214 | can_plt_call = TRUE; |
15b552e9 AM |
10215 | else |
10216 | stub_entry = NULL; | |
ad8e1ba5 | 10217 | } |
6ab189d5 | 10218 | else if (h != NULL |
039b3fef | 10219 | && strcmp (h->elf.root.root.string, |
6ab189d5 AM |
10220 | ".__libc_start_main") == 0) |
10221 | { | |
10222 | /* Allow crt1 branch to go via a toc adjusting stub. */ | |
b25116a9 | 10223 | can_plt_call = TRUE; |
6ab189d5 | 10224 | } |
ad8e1ba5 AM |
10225 | else |
10226 | { | |
10227 | if (strcmp (input_section->output_section->name, | |
10228 | ".init") == 0 | |
10229 | || strcmp (input_section->output_section->name, | |
10230 | ".fini") == 0) | |
10231 | (*_bfd_error_handler) | |
d003868e | 10232 | (_("%B(%A+0x%lx): automatic multiple TOCs " |
ad8e1ba5 AM |
10233 | "not supported using your crt files; " |
10234 | "recompile with -mminimal-toc or upgrade gcc"), | |
d003868e AM |
10235 | input_bfd, |
10236 | input_section, | |
ad8e1ba5 AM |
10237 | (long) rel->r_offset); |
10238 | else | |
10239 | (*_bfd_error_handler) | |
d003868e | 10240 | (_("%B(%A+0x%lx): sibling call optimization to `%s' " |
ad8e1ba5 AM |
10241 | "does not allow automatic multiple TOCs; " |
10242 | "recompile with -mminimal-toc or " | |
10243 | "-fno-optimize-sibling-calls, " | |
10244 | "or make `%s' extern"), | |
d003868e AM |
10245 | input_bfd, |
10246 | input_section, | |
ad8e1ba5 AM |
10247 | (long) rel->r_offset, |
10248 | sym_name, | |
10249 | sym_name); | |
10250 | bfd_set_error (bfd_error_bad_value); | |
10251 | ret = FALSE; | |
10252 | } | |
721956f4 AM |
10253 | } |
10254 | ||
b25116a9 AM |
10255 | if (can_plt_call |
10256 | && stub_entry->stub_type == ppc_stub_plt_call) | |
10257 | unresolved_reloc = FALSE; | |
10258 | } | |
10259 | ||
8387904d AM |
10260 | if (stub_entry == NULL |
10261 | && get_opd_info (sec) != NULL) | |
10262 | { | |
10263 | /* The branch destination is the value of the opd entry. */ | |
4cc603a5 AM |
10264 | bfd_vma off = (relocation + addend |
10265 | - sec->output_section->vma | |
10266 | - sec->output_offset); | |
8387904d AM |
10267 | bfd_vma dest = opd_entry_value (sec, off, NULL, NULL); |
10268 | if (dest != (bfd_vma) -1) | |
10269 | { | |
10270 | relocation = dest; | |
10271 | addend = 0; | |
10272 | } | |
10273 | } | |
10274 | ||
b25116a9 AM |
10275 | /* If the branch is out of reach we ought to have a long |
10276 | branch stub. */ | |
10277 | from = (rel->r_offset | |
10278 | + input_section->output_offset | |
10279 | + input_section->output_section->vma); | |
10280 | ||
10281 | if (stub_entry == NULL | |
4cc603a5 | 10282 | && (relocation + addend - from + max_br_offset |
b25116a9 AM |
10283 | >= 2 * max_br_offset) |
10284 | && r_type != R_PPC64_ADDR14_BRTAKEN | |
10285 | && r_type != R_PPC64_ADDR14_BRNTAKEN) | |
039b3fef AM |
10286 | stub_entry = ppc_get_stub_entry (input_section, sec, h, rel, |
10287 | htab); | |
b25116a9 AM |
10288 | |
10289 | if (stub_entry != NULL) | |
10290 | { | |
10291 | /* Munge up the value and addend so that we call the stub | |
10292 | rather than the procedure directly. */ | |
10293 | relocation = (stub_entry->stub_offset | |
10294 | + stub_entry->stub_sec->output_offset | |
10295 | + stub_entry->stub_sec->output_section->vma); | |
10296 | addend = 0; | |
10297 | } | |
10298 | ||
10299 | if (insn != 0) | |
10300 | { | |
10301 | if (is_power4) | |
721956f4 | 10302 | { |
b25116a9 AM |
10303 | /* Set 'a' bit. This is 0b00010 in BO field for branch |
10304 | on CR(BI) insns (BO == 001at or 011at), and 0b01000 | |
10305 | for branch on CTR insns (BO == 1a00t or 1a01t). */ | |
10306 | if ((insn & (0x14 << 21)) == (0x04 << 21)) | |
10307 | insn |= 0x02 << 21; | |
10308 | else if ((insn & (0x14 << 21)) == (0x10 << 21)) | |
10309 | insn |= 0x08 << 21; | |
10310 | else | |
10311 | break; | |
10312 | } | |
10313 | else | |
10314 | { | |
10315 | /* Invert 'y' bit if not the default. */ | |
4cc603a5 | 10316 | if ((bfd_signed_vma) (relocation + addend - from) < 0) |
b25116a9 | 10317 | insn ^= 0x01 << 21; |
721956f4 | 10318 | } |
b25116a9 AM |
10319 | |
10320 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset); | |
5bd4f169 | 10321 | } |
e86ce104 | 10322 | |
06da1e8e AM |
10323 | /* NOP out calls to undefined weak functions. |
10324 | We can thus call a weak function without first | |
10325 | checking whether the function is defined. */ | |
b25116a9 | 10326 | else if (h != NULL |
039b3fef | 10327 | && h->elf.root.type == bfd_link_hash_undefweak |
b25116a9 AM |
10328 | && r_type == R_PPC64_REL24 |
10329 | && relocation == 0 | |
4cc603a5 | 10330 | && addend == 0) |
e86ce104 | 10331 | { |
06da1e8e AM |
10332 | bfd_put_32 (output_bfd, NOP, contents + rel->r_offset); |
10333 | continue; | |
e86ce104 | 10334 | } |
65f38f15 AM |
10335 | break; |
10336 | } | |
5bd4f169 | 10337 | |
65f38f15 | 10338 | /* Set `addend'. */ |
411e1bfb | 10339 | tls_type = 0; |
65f38f15 AM |
10340 | switch (r_type) |
10341 | { | |
10342 | default: | |
10343 | (*_bfd_error_handler) | |
d003868e AM |
10344 | (_("%B: unknown relocation type %d for symbol %s"), |
10345 | input_bfd, (int) r_type, sym_name); | |
5bd4f169 | 10346 | |
65f38f15 | 10347 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 10348 | ret = FALSE; |
65f38f15 | 10349 | continue; |
5bd4f169 | 10350 | |
65f38f15 | 10351 | case R_PPC64_NONE: |
411e1bfb | 10352 | case R_PPC64_TLS: |
04c9666a AM |
10353 | case R_PPC64_GNU_VTINHERIT: |
10354 | case R_PPC64_GNU_VTENTRY: | |
65f38f15 | 10355 | continue; |
5bd4f169 AM |
10356 | |
10357 | /* GOT16 relocations. Like an ADDR16 using the symbol's | |
10358 | address in the GOT as relocation value instead of the | |
411e1bfb | 10359 | symbol's value itself. Also, create a GOT entry for the |
5bd4f169 | 10360 | symbol and put the symbol value there. */ |
411e1bfb AM |
10361 | case R_PPC64_GOT_TLSGD16: |
10362 | case R_PPC64_GOT_TLSGD16_LO: | |
10363 | case R_PPC64_GOT_TLSGD16_HI: | |
10364 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b | 10365 | tls_type = TLS_TLS | TLS_GD; |
411e1bfb AM |
10366 | goto dogot; |
10367 | ||
10368 | case R_PPC64_GOT_TLSLD16: | |
10369 | case R_PPC64_GOT_TLSLD16_LO: | |
10370 | case R_PPC64_GOT_TLSLD16_HI: | |
10371 | case R_PPC64_GOT_TLSLD16_HA: | |
951fd09b | 10372 | tls_type = TLS_TLS | TLS_LD; |
411e1bfb AM |
10373 | goto dogot; |
10374 | ||
10375 | case R_PPC64_GOT_TPREL16_DS: | |
10376 | case R_PPC64_GOT_TPREL16_LO_DS: | |
10377 | case R_PPC64_GOT_TPREL16_HI: | |
10378 | case R_PPC64_GOT_TPREL16_HA: | |
10379 | tls_type = TLS_TLS | TLS_TPREL; | |
10380 | goto dogot; | |
10381 | ||
10382 | case R_PPC64_GOT_DTPREL16_DS: | |
10383 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
10384 | case R_PPC64_GOT_DTPREL16_HI: | |
10385 | case R_PPC64_GOT_DTPREL16_HA: | |
10386 | tls_type = TLS_TLS | TLS_DTPREL; | |
10387 | goto dogot; | |
10388 | ||
65f38f15 AM |
10389 | case R_PPC64_GOT16: |
10390 | case R_PPC64_GOT16_LO: | |
10391 | case R_PPC64_GOT16_HI: | |
10392 | case R_PPC64_GOT16_HA: | |
10393 | case R_PPC64_GOT16_DS: | |
10394 | case R_PPC64_GOT16_LO_DS: | |
411e1bfb | 10395 | dogot: |
5bd4f169 AM |
10396 | { |
10397 | /* Relocation is to the entry for this symbol in the global | |
10398 | offset table. */ | |
e717da7e | 10399 | asection *got; |
d881513a | 10400 | bfd_vma *offp; |
5bd4f169 | 10401 | bfd_vma off; |
d881513a | 10402 | unsigned long indx = 0; |
65f38f15 | 10403 | |
d881513a AM |
10404 | if (tls_type == (TLS_TLS | TLS_LD) |
10405 | && (h == NULL | |
f5385ebf | 10406 | || !h->elf.def_dynamic)) |
e717da7e | 10407 | offp = &ppc64_tlsld_got (input_bfd)->offset; |
411e1bfb | 10408 | else |
5bd4f169 | 10409 | { |
d881513a | 10410 | struct got_entry *ent; |
5bd4f169 | 10411 | |
d881513a AM |
10412 | if (h != NULL) |
10413 | { | |
10414 | bfd_boolean dyn = htab->elf.dynamic_sections_created; | |
039b3fef AM |
10415 | if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, |
10416 | &h->elf) | |
d881513a | 10417 | || (info->shared |
039b3fef | 10418 | && SYMBOL_REFERENCES_LOCAL (info, &h->elf))) |
d881513a AM |
10419 | /* This is actually a static link, or it is a |
10420 | -Bsymbolic link and the symbol is defined | |
10421 | locally, or the symbol was forced to be local | |
10422 | because of a version file. */ | |
10423 | ; | |
10424 | else | |
10425 | { | |
039b3fef | 10426 | indx = h->elf.dynindx; |
d881513a AM |
10427 | unresolved_reloc = FALSE; |
10428 | } | |
039b3fef | 10429 | ent = h->elf.got.glist; |
d881513a | 10430 | } |
411e1bfb | 10431 | else |
5bd4f169 | 10432 | { |
d881513a AM |
10433 | if (local_got_ents == NULL) |
10434 | abort (); | |
10435 | ent = local_got_ents[r_symndx]; | |
5bd4f169 | 10436 | } |
d881513a AM |
10437 | |
10438 | for (; ent != NULL; ent = ent->next) | |
4cc603a5 | 10439 | if (ent->addend == orig_addend |
e717da7e | 10440 | && ent->owner == input_bfd |
d881513a AM |
10441 | && ent->tls_type == tls_type) |
10442 | break; | |
10443 | if (ent == NULL) | |
10444 | abort (); | |
10445 | offp = &ent->got.offset; | |
5bd4f169 | 10446 | } |
411e1bfb | 10447 | |
e717da7e AM |
10448 | got = ppc64_elf_tdata (input_bfd)->got; |
10449 | if (got == NULL) | |
10450 | abort (); | |
10451 | ||
411e1bfb AM |
10452 | /* The offset must always be a multiple of 8. We use the |
10453 | least significant bit to record whether we have already | |
10454 | processed this entry. */ | |
d881513a | 10455 | off = *offp; |
411e1bfb AM |
10456 | if ((off & 1) != 0) |
10457 | off &= ~1; | |
5bd4f169 AM |
10458 | else |
10459 | { | |
411e1bfb AM |
10460 | /* Generate relocs for the dynamic linker, except in |
10461 | the case of TLSLD where we'll use one entry per | |
10462 | module. */ | |
e717da7e AM |
10463 | asection *relgot = ppc64_elf_tdata (input_bfd)->relgot; |
10464 | ||
d881513a | 10465 | *offp = off | 1; |
4e795f50 AM |
10466 | if ((info->shared || indx != 0) |
10467 | && (h == NULL | |
039b3fef AM |
10468 | || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT |
10469 | || h->elf.root.type != bfd_link_hash_undefweak)) | |
5bd4f169 | 10470 | { |
e717da7e AM |
10471 | outrel.r_offset = (got->output_section->vma |
10472 | + got->output_offset | |
411e1bfb | 10473 | + off); |
4cc603a5 | 10474 | outrel.r_addend = addend; |
d881513a | 10475 | if (tls_type & (TLS_LD | TLS_GD)) |
5bd4f169 | 10476 | { |
411e1bfb | 10477 | outrel.r_addend = 0; |
e515b051 | 10478 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPMOD64); |
d881513a AM |
10479 | if (tls_type == (TLS_TLS | TLS_GD)) |
10480 | { | |
e717da7e AM |
10481 | loc = relgot->contents; |
10482 | loc += (relgot->reloc_count++ | |
d881513a AM |
10483 | * sizeof (Elf64_External_Rela)); |
10484 | bfd_elf64_swap_reloca_out (output_bfd, | |
10485 | &outrel, loc); | |
e515b051 | 10486 | outrel.r_offset += 8; |
4cc603a5 | 10487 | outrel.r_addend = addend; |
d881513a AM |
10488 | outrel.r_info |
10489 | = ELF64_R_INFO (indx, R_PPC64_DTPREL64); | |
d881513a | 10490 | } |
411e1bfb | 10491 | } |
951fd09b | 10492 | else if (tls_type == (TLS_TLS | TLS_DTPREL)) |
411e1bfb | 10493 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64); |
951fd09b | 10494 | else if (tls_type == (TLS_TLS | TLS_TPREL)) |
411e1bfb AM |
10495 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_TPREL64); |
10496 | else if (indx == 0) | |
81407a69 AM |
10497 | { |
10498 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_RELATIVE); | |
10499 | ||
10500 | /* Write the .got section contents for the sake | |
10501 | of prelink. */ | |
e717da7e | 10502 | loc = got->contents + off; |
23fbd6fa JJ |
10503 | bfd_put_64 (output_bfd, outrel.r_addend + relocation, |
10504 | loc); | |
81407a69 | 10505 | } |
411e1bfb AM |
10506 | else |
10507 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT); | |
81407a69 AM |
10508 | |
10509 | if (indx == 0 && tls_type != (TLS_TLS | TLS_LD)) | |
e515b051 AM |
10510 | { |
10511 | outrel.r_addend += relocation; | |
10512 | if (tls_type & (TLS_GD | TLS_DTPREL | TLS_TPREL)) | |
e1918d23 | 10513 | outrel.r_addend -= htab->elf.tls_sec->vma; |
e515b051 | 10514 | } |
e717da7e AM |
10515 | loc = relgot->contents; |
10516 | loc += (relgot->reloc_count++ | |
411e1bfb AM |
10517 | * sizeof (Elf64_External_Rela)); |
10518 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); | |
10519 | } | |
10520 | ||
ad8e1ba5 | 10521 | /* Init the .got section contents here if we're not |
81407a69 | 10522 | emitting a reloc. */ |
d881513a | 10523 | else |
411e1bfb | 10524 | { |
4cc603a5 | 10525 | relocation += addend; |
7b609f53 AM |
10526 | if (tls_type == (TLS_TLS | TLS_LD)) |
10527 | relocation = 1; | |
10528 | else if (tls_type != 0) | |
411e1bfb | 10529 | { |
e1918d23 | 10530 | relocation -= htab->elf.tls_sec->vma + DTP_OFFSET; |
7b609f53 | 10531 | if (tls_type == (TLS_TLS | TLS_TPREL)) |
411e1bfb | 10532 | relocation += DTP_OFFSET - TP_OFFSET; |
5bd4f169 | 10533 | |
7b609f53 AM |
10534 | if (tls_type == (TLS_TLS | TLS_GD)) |
10535 | { | |
10536 | bfd_put_64 (output_bfd, relocation, | |
e717da7e | 10537 | got->contents + off + 8); |
7b609f53 AM |
10538 | relocation = 1; |
10539 | } | |
411e1bfb | 10540 | } |
7b609f53 | 10541 | |
411e1bfb | 10542 | bfd_put_64 (output_bfd, relocation, |
e717da7e | 10543 | got->contents + off); |
5bd4f169 AM |
10544 | } |
10545 | } | |
10546 | ||
65f38f15 AM |
10547 | if (off >= (bfd_vma) -2) |
10548 | abort (); | |
10549 | ||
e717da7e | 10550 | relocation = got->output_offset + off; |
65f38f15 | 10551 | |
5bd4f169 | 10552 | /* TOC base (r2) is TOC start plus 0x8000. */ |
e717da7e | 10553 | addend = -TOC_BASE_OFF; |
5bd4f169 | 10554 | } |
65f38f15 AM |
10555 | break; |
10556 | ||
10557 | case R_PPC64_PLT16_HA: | |
10558 | case R_PPC64_PLT16_HI: | |
10559 | case R_PPC64_PLT16_LO: | |
10560 | case R_PPC64_PLT32: | |
10561 | case R_PPC64_PLT64: | |
10562 | /* Relocation is to the entry for this symbol in the | |
10563 | procedure linkage table. */ | |
10564 | ||
10565 | /* Resolve a PLT reloc against a local symbol directly, | |
10566 | without using the procedure linkage table. */ | |
10567 | if (h == NULL) | |
10568 | break; | |
10569 | ||
411e1bfb AM |
10570 | /* It's possible that we didn't make a PLT entry for this |
10571 | symbol. This happens when statically linking PIC code, | |
10572 | or when using -Bsymbolic. Go find a match if there is a | |
10573 | PLT entry. */ | |
4ce794b7 | 10574 | if (htab->plt != NULL) |
65f38f15 | 10575 | { |
411e1bfb | 10576 | struct plt_entry *ent; |
039b3fef | 10577 | for (ent = h->elf.plt.plist; ent != NULL; ent = ent->next) |
4cc603a5 | 10578 | if (ent->addend == orig_addend |
411e1bfb AM |
10579 | && ent->plt.offset != (bfd_vma) -1) |
10580 | { | |
4ce794b7 AM |
10581 | relocation = (htab->plt->output_section->vma |
10582 | + htab->plt->output_offset | |
411e1bfb AM |
10583 | + ent->plt.offset); |
10584 | unresolved_reloc = FALSE; | |
10585 | } | |
65f38f15 | 10586 | } |
65f38f15 | 10587 | break; |
5bd4f169 | 10588 | |
0b13192e AM |
10589 | case R_PPC64_TOC: |
10590 | /* Relocation value is TOC base. */ | |
10591 | relocation = TOCstart; | |
10592 | if (r_symndx == 0) | |
10593 | relocation += htab->stub_group[input_section->id].toc_off; | |
8517fae7 AM |
10594 | else if (unresolved_reloc) |
10595 | ; | |
10596 | else if (sec != NULL && sec->id <= htab->top_id) | |
0b13192e AM |
10597 | relocation += htab->stub_group[sec->id].toc_off; |
10598 | else | |
10599 | unresolved_reloc = TRUE; | |
10600 | goto dodyn2; | |
10601 | ||
5bd4f169 AM |
10602 | /* TOC16 relocs. We want the offset relative to the TOC base, |
10603 | which is the address of the start of the TOC plus 0x8000. | |
10604 | The TOC consists of sections .got, .toc, .tocbss, and .plt, | |
10605 | in this order. */ | |
65f38f15 AM |
10606 | case R_PPC64_TOC16: |
10607 | case R_PPC64_TOC16_LO: | |
10608 | case R_PPC64_TOC16_HI: | |
10609 | case R_PPC64_TOC16_DS: | |
10610 | case R_PPC64_TOC16_LO_DS: | |
10611 | case R_PPC64_TOC16_HA: | |
ad8e1ba5 | 10612 | addend -= TOCstart + htab->stub_group[input_section->id].toc_off; |
5bd4f169 AM |
10613 | break; |
10614 | ||
10615 | /* Relocate against the beginning of the section. */ | |
65f38f15 AM |
10616 | case R_PPC64_SECTOFF: |
10617 | case R_PPC64_SECTOFF_LO: | |
10618 | case R_PPC64_SECTOFF_HI: | |
10619 | case R_PPC64_SECTOFF_DS: | |
10620 | case R_PPC64_SECTOFF_LO_DS: | |
10621 | case R_PPC64_SECTOFF_HA: | |
4ce794b7 | 10622 | if (sec != NULL) |
65f38f15 | 10623 | addend -= sec->output_section->vma; |
5bd4f169 AM |
10624 | break; |
10625 | ||
721956f4 AM |
10626 | case R_PPC64_REL14: |
10627 | case R_PPC64_REL14_BRNTAKEN: | |
10628 | case R_PPC64_REL14_BRTAKEN: | |
5d1634d7 AM |
10629 | case R_PPC64_REL24: |
10630 | break; | |
10631 | ||
411e1bfb AM |
10632 | case R_PPC64_TPREL16: |
10633 | case R_PPC64_TPREL16_LO: | |
10634 | case R_PPC64_TPREL16_HI: | |
10635 | case R_PPC64_TPREL16_HA: | |
10636 | case R_PPC64_TPREL16_DS: | |
10637 | case R_PPC64_TPREL16_LO_DS: | |
10638 | case R_PPC64_TPREL16_HIGHER: | |
10639 | case R_PPC64_TPREL16_HIGHERA: | |
10640 | case R_PPC64_TPREL16_HIGHEST: | |
10641 | case R_PPC64_TPREL16_HIGHESTA: | |
e1918d23 | 10642 | addend -= htab->elf.tls_sec->vma + TP_OFFSET; |
411e1bfb AM |
10643 | if (info->shared) |
10644 | /* The TPREL16 relocs shouldn't really be used in shared | |
10645 | libs as they will result in DT_TEXTREL being set, but | |
10646 | support them anyway. */ | |
10647 | goto dodyn; | |
10648 | break; | |
10649 | ||
10650 | case R_PPC64_DTPREL16: | |
10651 | case R_PPC64_DTPREL16_LO: | |
10652 | case R_PPC64_DTPREL16_HI: | |
10653 | case R_PPC64_DTPREL16_HA: | |
10654 | case R_PPC64_DTPREL16_DS: | |
10655 | case R_PPC64_DTPREL16_LO_DS: | |
10656 | case R_PPC64_DTPREL16_HIGHER: | |
10657 | case R_PPC64_DTPREL16_HIGHERA: | |
10658 | case R_PPC64_DTPREL16_HIGHEST: | |
10659 | case R_PPC64_DTPREL16_HIGHESTA: | |
e1918d23 | 10660 | addend -= htab->elf.tls_sec->vma + DTP_OFFSET; |
411e1bfb AM |
10661 | break; |
10662 | ||
e515b051 AM |
10663 | case R_PPC64_DTPMOD64: |
10664 | relocation = 1; | |
10665 | addend = 0; | |
10666 | goto dodyn; | |
10667 | ||
411e1bfb | 10668 | case R_PPC64_TPREL64: |
e1918d23 | 10669 | addend -= htab->elf.tls_sec->vma + TP_OFFSET; |
411e1bfb AM |
10670 | goto dodyn; |
10671 | ||
10672 | case R_PPC64_DTPREL64: | |
e1918d23 | 10673 | addend -= htab->elf.tls_sec->vma + DTP_OFFSET; |
411e1bfb AM |
10674 | /* Fall thru */ |
10675 | ||
65f38f15 AM |
10676 | /* Relocations that may need to be propagated if this is a |
10677 | dynamic object. */ | |
04c9666a | 10678 | case R_PPC64_REL30: |
65f38f15 AM |
10679 | case R_PPC64_REL32: |
10680 | case R_PPC64_REL64: | |
10681 | case R_PPC64_ADDR14: | |
10682 | case R_PPC64_ADDR14_BRNTAKEN: | |
10683 | case R_PPC64_ADDR14_BRTAKEN: | |
10684 | case R_PPC64_ADDR16: | |
10685 | case R_PPC64_ADDR16_DS: | |
10686 | case R_PPC64_ADDR16_HA: | |
10687 | case R_PPC64_ADDR16_HI: | |
10688 | case R_PPC64_ADDR16_HIGHER: | |
10689 | case R_PPC64_ADDR16_HIGHERA: | |
10690 | case R_PPC64_ADDR16_HIGHEST: | |
10691 | case R_PPC64_ADDR16_HIGHESTA: | |
10692 | case R_PPC64_ADDR16_LO: | |
10693 | case R_PPC64_ADDR16_LO_DS: | |
10694 | case R_PPC64_ADDR24: | |
65f38f15 AM |
10695 | case R_PPC64_ADDR32: |
10696 | case R_PPC64_ADDR64: | |
10697 | case R_PPC64_UADDR16: | |
10698 | case R_PPC64_UADDR32: | |
10699 | case R_PPC64_UADDR64: | |
ec338859 AM |
10700 | /* r_symndx will be zero only for relocs against symbols |
10701 | from removed linkonce sections, or sections discarded by | |
10702 | a linker script. */ | |
411e1bfb | 10703 | dodyn: |
5d1634d7 AM |
10704 | if (r_symndx == 0) |
10705 | break; | |
10706 | /* Fall thru. */ | |
10707 | ||
0b13192e | 10708 | dodyn2: |
5d1634d7 | 10709 | if ((input_section->flags & SEC_ALLOC) == 0) |
ec338859 AM |
10710 | break; |
10711 | ||
41bd81ab AM |
10712 | if (NO_OPD_RELOCS && is_opd) |
10713 | break; | |
10714 | ||
65f38f15 | 10715 | if ((info->shared |
4e795f50 | 10716 | && (h == NULL |
039b3fef AM |
10717 | || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT |
10718 | || h->elf.root.type != bfd_link_hash_undefweak) | |
411e1bfb | 10719 | && (MUST_BE_DYN_RELOC (r_type) |
039b3fef | 10720 | || !SYMBOL_CALLS_LOCAL (info, &h->elf))) |
f4656909 AM |
10721 | || (ELIMINATE_COPY_RELOCS |
10722 | && !info->shared | |
65f38f15 | 10723 | && h != NULL |
039b3fef | 10724 | && h->elf.dynindx != -1 |
f5385ebf AM |
10725 | && !h->elf.non_got_ref |
10726 | && h->elf.def_dynamic | |
10727 | && !h->elf.def_regular)) | |
65f38f15 AM |
10728 | { |
10729 | Elf_Internal_Rela outrel; | |
b34976b6 | 10730 | bfd_boolean skip, relocate; |
65f38f15 | 10731 | asection *sreloc; |
947216bf | 10732 | bfd_byte *loc; |
1cf1f670 | 10733 | bfd_vma out_off; |
65f38f15 AM |
10734 | |
10735 | /* When generating a dynamic object, these relocations | |
10736 | are copied into the output file to be resolved at run | |
10737 | time. */ | |
10738 | ||
b34976b6 AM |
10739 | skip = FALSE; |
10740 | relocate = FALSE; | |
65f38f15 | 10741 | |
1cf1f670 AM |
10742 | out_off = _bfd_elf_section_offset (output_bfd, info, |
10743 | input_section, rel->r_offset); | |
10744 | if (out_off == (bfd_vma) -1) | |
b34976b6 | 10745 | skip = TRUE; |
1cf1f670 | 10746 | else if (out_off == (bfd_vma) -2) |
b34976b6 | 10747 | skip = TRUE, relocate = TRUE; |
1cf1f670 AM |
10748 | out_off += (input_section->output_section->vma |
10749 | + input_section->output_offset); | |
10750 | outrel.r_offset = out_off; | |
411e1bfb | 10751 | outrel.r_addend = rel->r_addend; |
65f38f15 | 10752 | |
1cf1f670 AM |
10753 | /* Optimize unaligned reloc use. */ |
10754 | if ((r_type == R_PPC64_ADDR64 && (out_off & 7) != 0) | |
10755 | || (r_type == R_PPC64_UADDR64 && (out_off & 7) == 0)) | |
10756 | r_type ^= R_PPC64_ADDR64 ^ R_PPC64_UADDR64; | |
10757 | else if ((r_type == R_PPC64_ADDR32 && (out_off & 3) != 0) | |
10758 | || (r_type == R_PPC64_UADDR32 && (out_off & 3) == 0)) | |
10759 | r_type ^= R_PPC64_ADDR32 ^ R_PPC64_UADDR32; | |
10760 | else if ((r_type == R_PPC64_ADDR16 && (out_off & 1) != 0) | |
10761 | || (r_type == R_PPC64_UADDR16 && (out_off & 1) == 0)) | |
10762 | r_type ^= R_PPC64_ADDR16 ^ R_PPC64_UADDR16; | |
10763 | ||
65f38f15 | 10764 | if (skip) |
0bb2d96a | 10765 | memset (&outrel, 0, sizeof outrel); |
039b3fef | 10766 | else if (!SYMBOL_REFERENCES_LOCAL (info, &h->elf) |
0b13192e AM |
10767 | && !is_opd |
10768 | && r_type != R_PPC64_TOC) | |
039b3fef | 10769 | outrel.r_info = ELF64_R_INFO (h->elf.dynindx, r_type); |
65f38f15 AM |
10770 | else |
10771 | { | |
41bd81ab AM |
10772 | /* This symbol is local, or marked to become local, |
10773 | or this is an opd section reloc which must point | |
10774 | at a local function. */ | |
65f38f15 | 10775 | outrel.r_addend += relocation; |
e86ce104 | 10776 | if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC) |
65f38f15 | 10777 | { |
3fad3c7c | 10778 | if (is_opd && h != NULL) |
afbe61cf AM |
10779 | { |
10780 | /* Lie about opd entries. This case occurs | |
10781 | when building shared libraries and we | |
10782 | reference a function in another shared | |
3fad3c7c AM |
10783 | lib. The same thing happens for a weak |
10784 | definition in an application that's | |
10785 | overridden by a strong definition in a | |
10786 | shared lib. (I believe this is a generic | |
10787 | bug in binutils handling of weak syms.) | |
10788 | In these cases we won't use the opd | |
1e2f5b6e | 10789 | entry in this lib. */ |
b34976b6 | 10790 | unresolved_reloc = FALSE; |
afbe61cf | 10791 | } |
65f38f15 | 10792 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); |
81407a69 AM |
10793 | |
10794 | /* We need to relocate .opd contents for ld.so. | |
10795 | Prelink also wants simple and consistent rules | |
10796 | for relocs. This make all RELATIVE relocs have | |
10797 | *r_offset equal to r_addend. */ | |
10798 | relocate = TRUE; | |
65f38f15 AM |
10799 | } |
10800 | else | |
10801 | { | |
10802 | long indx = 0; | |
10803 | ||
41bd81ab | 10804 | if (bfd_is_abs_section (sec)) |
65f38f15 AM |
10805 | ; |
10806 | else if (sec == NULL || sec->owner == NULL) | |
10807 | { | |
10808 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 10809 | return FALSE; |
65f38f15 AM |
10810 | } |
10811 | else | |
10812 | { | |
10813 | asection *osec; | |
10814 | ||
10815 | osec = sec->output_section; | |
10816 | indx = elf_section_data (osec)->dynindx; | |
10817 | ||
10818 | /* We are turning this relocation into one | |
10819 | against a section symbol, so subtract out | |
10820 | the output section's address but not the | |
10821 | offset of the input section in the output | |
10822 | section. */ | |
10823 | outrel.r_addend -= osec->vma; | |
10824 | } | |
10825 | ||
10826 | outrel.r_info = ELF64_R_INFO (indx, r_type); | |
10827 | } | |
10828 | } | |
10829 | ||
10830 | sreloc = elf_section_data (input_section)->sreloc; | |
10831 | if (sreloc == NULL) | |
10832 | abort (); | |
10833 | ||
dfbb6ac9 AM |
10834 | if (sreloc->reloc_count * sizeof (Elf64_External_Rela) |
10835 | >= sreloc->size) | |
10836 | abort (); | |
947216bf AM |
10837 | loc = sreloc->contents; |
10838 | loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela); | |
65f38f15 AM |
10839 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); |
10840 | ||
10841 | /* If this reloc is against an external symbol, it will | |
10842 | be computed at runtime, so there's no need to do | |
81407a69 AM |
10843 | anything now. However, for the sake of prelink ensure |
10844 | that the section contents are a known value. */ | |
65f38f15 | 10845 | if (! relocate) |
81407a69 AM |
10846 | { |
10847 | unresolved_reloc = FALSE; | |
10848 | /* The value chosen here is quite arbitrary as ld.so | |
10849 | ignores section contents except for the special | |
10850 | case of .opd where the contents might be accessed | |
10851 | before relocation. Choose zero, as that won't | |
10852 | cause reloc overflow. */ | |
10853 | relocation = 0; | |
10854 | addend = 0; | |
10855 | /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs | |
10856 | to improve backward compatibility with older | |
10857 | versions of ld. */ | |
10858 | if (r_type == R_PPC64_ADDR64) | |
10859 | addend = outrel.r_addend; | |
10860 | /* Adjust pc_relative relocs to have zero in *r_offset. */ | |
4ce794b7 | 10861 | else if (ppc64_elf_howto_table[r_type]->pc_relative) |
000732f7 AM |
10862 | addend = (input_section->output_section->vma |
10863 | + input_section->output_offset | |
10864 | + rel->r_offset); | |
81407a69 | 10865 | } |
65f38f15 | 10866 | } |
5bd4f169 AM |
10867 | break; |
10868 | ||
65f38f15 AM |
10869 | case R_PPC64_COPY: |
10870 | case R_PPC64_GLOB_DAT: | |
10871 | case R_PPC64_JMP_SLOT: | |
10872 | case R_PPC64_RELATIVE: | |
10873 | /* We shouldn't ever see these dynamic relocs in relocatable | |
10874 | files. */ | |
ae9a127f | 10875 | /* Fall through. */ |
65f38f15 AM |
10876 | |
10877 | case R_PPC64_PLTGOT16: | |
10878 | case R_PPC64_PLTGOT16_DS: | |
10879 | case R_PPC64_PLTGOT16_HA: | |
10880 | case R_PPC64_PLTGOT16_HI: | |
10881 | case R_PPC64_PLTGOT16_LO: | |
10882 | case R_PPC64_PLTGOT16_LO_DS: | |
10883 | case R_PPC64_PLTREL32: | |
10884 | case R_PPC64_PLTREL64: | |
10885 | /* These ones haven't been implemented yet. */ | |
10886 | ||
10887 | (*_bfd_error_handler) | |
d003868e AM |
10888 | (_("%B: relocation %s is not supported for symbol %s."), |
10889 | input_bfd, | |
4ce794b7 | 10890 | ppc64_elf_howto_table[r_type]->name, sym_name); |
5bd4f169 AM |
10891 | |
10892 | bfd_set_error (bfd_error_invalid_operation); | |
b34976b6 | 10893 | ret = FALSE; |
5bd4f169 | 10894 | continue; |
65f38f15 | 10895 | } |
5bd4f169 | 10896 | |
65f38f15 AM |
10897 | /* Do any further special processing. */ |
10898 | switch (r_type) | |
10899 | { | |
10900 | default: | |
10901 | break; | |
10902 | ||
10903 | case R_PPC64_ADDR16_HA: | |
10904 | case R_PPC64_ADDR16_HIGHERA: | |
10905 | case R_PPC64_ADDR16_HIGHESTA: | |
86bbe32f AM |
10906 | case R_PPC64_GOT16_HA: |
10907 | case R_PPC64_PLTGOT16_HA: | |
65f38f15 AM |
10908 | case R_PPC64_PLT16_HA: |
10909 | case R_PPC64_TOC16_HA: | |
10910 | case R_PPC64_SECTOFF_HA: | |
411e1bfb AM |
10911 | case R_PPC64_TPREL16_HA: |
10912 | case R_PPC64_DTPREL16_HA: | |
10913 | case R_PPC64_GOT_TLSGD16_HA: | |
10914 | case R_PPC64_GOT_TLSLD16_HA: | |
10915 | case R_PPC64_GOT_TPREL16_HA: | |
10916 | case R_PPC64_GOT_DTPREL16_HA: | |
10917 | case R_PPC64_TPREL16_HIGHER: | |
10918 | case R_PPC64_TPREL16_HIGHERA: | |
10919 | case R_PPC64_TPREL16_HIGHEST: | |
10920 | case R_PPC64_TPREL16_HIGHESTA: | |
10921 | case R_PPC64_DTPREL16_HIGHER: | |
10922 | case R_PPC64_DTPREL16_HIGHERA: | |
10923 | case R_PPC64_DTPREL16_HIGHEST: | |
10924 | case R_PPC64_DTPREL16_HIGHESTA: | |
65f38f15 AM |
10925 | /* It's just possible that this symbol is a weak symbol |
10926 | that's not actually defined anywhere. In that case, | |
10927 | 'sec' would be NULL, and we should leave the symbol | |
10928 | alone (it will be set to zero elsewhere in the link). */ | |
10929 | if (sec != NULL) | |
e515b051 AM |
10930 | /* Add 0x10000 if sign bit in 0:15 is set. |
10931 | Bits 0:15 are not used. */ | |
10932 | addend += 0x8000; | |
65f38f15 AM |
10933 | break; |
10934 | ||
10935 | case R_PPC64_ADDR16_DS: | |
10936 | case R_PPC64_ADDR16_LO_DS: | |
10937 | case R_PPC64_GOT16_DS: | |
10938 | case R_PPC64_GOT16_LO_DS: | |
10939 | case R_PPC64_PLT16_LO_DS: | |
10940 | case R_PPC64_SECTOFF_DS: | |
10941 | case R_PPC64_SECTOFF_LO_DS: | |
10942 | case R_PPC64_TOC16_DS: | |
10943 | case R_PPC64_TOC16_LO_DS: | |
10944 | case R_PPC64_PLTGOT16_DS: | |
10945 | case R_PPC64_PLTGOT16_LO_DS: | |
411e1bfb AM |
10946 | case R_PPC64_GOT_TPREL16_DS: |
10947 | case R_PPC64_GOT_TPREL16_LO_DS: | |
10948 | case R_PPC64_GOT_DTPREL16_DS: | |
10949 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
10950 | case R_PPC64_TPREL16_DS: | |
10951 | case R_PPC64_TPREL16_LO_DS: | |
10952 | case R_PPC64_DTPREL16_DS: | |
10953 | case R_PPC64_DTPREL16_LO_DS: | |
adadcc0c AM |
10954 | insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3)); |
10955 | mask = 3; | |
10956 | /* If this reloc is against an lq insn, then the value must be | |
10957 | a multiple of 16. This is somewhat of a hack, but the | |
10958 | "correct" way to do this by defining _DQ forms of all the | |
10959 | _DS relocs bloats all reloc switches in this file. It | |
10960 | doesn't seem to make much sense to use any of these relocs | |
10961 | in data, so testing the insn should be safe. */ | |
494dac0c | 10962 | if ((insn & (0x3f << 26)) == (56u << 26)) |
adadcc0c AM |
10963 | mask = 15; |
10964 | if (((relocation + addend) & mask) != 0) | |
65f38f15 AM |
10965 | { |
10966 | (*_bfd_error_handler) | |
d003868e AM |
10967 | (_("%B: error: relocation %s not a multiple of %d"), |
10968 | input_bfd, | |
4ce794b7 | 10969 | ppc64_elf_howto_table[r_type]->name, |
adadcc0c | 10970 | mask + 1); |
65f38f15 | 10971 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 10972 | ret = FALSE; |
65f38f15 AM |
10973 | continue; |
10974 | } | |
10975 | break; | |
5bd4f169 AM |
10976 | } |
10977 | ||
239e1f3a AM |
10978 | /* Dynamic relocs are not propagated for SEC_DEBUGGING sections |
10979 | because such sections are not SEC_ALLOC and thus ld.so will | |
10980 | not process them. */ | |
65f38f15 | 10981 | if (unresolved_reloc |
239e1f3a | 10982 | && !((input_section->flags & SEC_DEBUGGING) != 0 |
f5385ebf | 10983 | && h->elf.def_dynamic)) |
9c07fe7c AM |
10984 | { |
10985 | (*_bfd_error_handler) | |
d003868e AM |
10986 | (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"), |
10987 | input_bfd, | |
10988 | input_section, | |
9c07fe7c | 10989 | (long) rel->r_offset, |
7b609f53 | 10990 | ppc64_elf_howto_table[(int) r_type]->name, |
039b3fef | 10991 | h->elf.root.root.string); |
b34976b6 | 10992 | ret = FALSE; |
9c07fe7c | 10993 | } |
5bd4f169 | 10994 | |
65f38f15 | 10995 | r = _bfd_final_link_relocate (ppc64_elf_howto_table[(int) r_type], |
5bd4f169 AM |
10996 | input_bfd, |
10997 | input_section, | |
10998 | contents, | |
411e1bfb | 10999 | rel->r_offset, |
5bd4f169 AM |
11000 | relocation, |
11001 | addend); | |
11002 | ||
ef60b7ff | 11003 | if (r != bfd_reloc_ok) |
5bd4f169 | 11004 | { |
cd27b276 AM |
11005 | if (sym_name == NULL) |
11006 | sym_name = "(null)"; | |
11007 | if (r == bfd_reloc_overflow) | |
5bd4f169 | 11008 | { |
cd27b276 AM |
11009 | if (warned) |
11010 | continue; | |
11011 | if (h != NULL | |
039b3fef | 11012 | && h->elf.root.type == bfd_link_hash_undefweak |
4ce794b7 | 11013 | && ppc64_elf_howto_table[r_type]->pc_relative) |
5bd4f169 AM |
11014 | { |
11015 | /* Assume this is a call protected by other code that | |
11016 | detects the symbol is undefined. If this is the case, | |
11017 | we can safely ignore the overflow. If not, the | |
11018 | program is hosed anyway, and a little warning isn't | |
11019 | going to help. */ | |
11020 | ||
11021 | continue; | |
11022 | } | |
11023 | ||
ef60b7ff | 11024 | if (!((*info->callbacks->reloc_overflow) |
dfeffb9f L |
11025 | (info, (h ? &h->elf.root : NULL), sym_name, |
11026 | ppc64_elf_howto_table[r_type]->name, | |
4cc603a5 | 11027 | orig_addend, input_bfd, input_section, rel->r_offset))) |
b34976b6 | 11028 | return FALSE; |
ef60b7ff AM |
11029 | } |
11030 | else | |
11031 | { | |
11032 | (*_bfd_error_handler) | |
d003868e AM |
11033 | (_("%B(%A+0x%lx): %s reloc against `%s': error %d"), |
11034 | input_bfd, | |
11035 | input_section, | |
7b609f53 | 11036 | (long) rel->r_offset, |
4ce794b7 | 11037 | ppc64_elf_howto_table[r_type]->name, |
7b609f53 AM |
11038 | sym_name, |
11039 | (int) r); | |
b34976b6 | 11040 | ret = FALSE; |
ef60b7ff | 11041 | } |
5bd4f169 | 11042 | } |
5bd4f169 AM |
11043 | } |
11044 | ||
645ea6a9 AM |
11045 | /* If we're emitting relocations, then shortly after this function |
11046 | returns, reloc offsets and addends for this section will be | |
11047 | adjusted. Worse, reloc symbol indices will be for the output | |
8860955f AM |
11048 | file rather than the input. Save a copy of the relocs for |
11049 | opd_entry_value. */ | |
4cc603a5 | 11050 | if (is_opd && (info->emitrelocations || info->relocatable)) |
8860955f AM |
11051 | { |
11052 | bfd_size_type amt; | |
11053 | amt = input_section->reloc_count * sizeof (Elf_Internal_Rela); | |
11054 | rel = bfd_alloc (input_bfd, amt); | |
11055 | BFD_ASSERT (ppc64_elf_tdata (input_bfd)->opd_relocs == NULL); | |
11056 | ppc64_elf_tdata (input_bfd)->opd_relocs = rel; | |
11057 | if (rel == NULL) | |
11058 | return FALSE; | |
11059 | memcpy (rel, relocs, amt); | |
11060 | } | |
5bd4f169 AM |
11061 | return ret; |
11062 | } | |
11063 | ||
754021d0 AM |
11064 | /* Adjust the value of any local symbols in opd sections. */ |
11065 | ||
11066 | static bfd_boolean | |
11067 | ppc64_elf_output_symbol_hook (struct bfd_link_info *info, | |
11068 | const char *name ATTRIBUTE_UNUSED, | |
11069 | Elf_Internal_Sym *elfsym, | |
11070 | asection *input_sec, | |
11071 | struct elf_link_hash_entry *h) | |
11072 | { | |
4025353c | 11073 | long *opd_adjust, adjust; |
754021d0 AM |
11074 | bfd_vma value; |
11075 | ||
4025353c AM |
11076 | if (h != NULL) |
11077 | return TRUE; | |
11078 | ||
11079 | opd_adjust = get_opd_info (input_sec); | |
11080 | if (opd_adjust == NULL) | |
754021d0 AM |
11081 | return TRUE; |
11082 | ||
11083 | value = elfsym->st_value - input_sec->output_offset; | |
11084 | if (!info->relocatable) | |
11085 | value -= input_sec->output_section->vma; | |
11086 | ||
3f764659 | 11087 | adjust = opd_adjust[value / 8]; |
4025353c AM |
11088 | if (adjust == -1) |
11089 | elfsym->st_value = 0; | |
11090 | else | |
11091 | elfsym->st_value += adjust; | |
754021d0 AM |
11092 | return TRUE; |
11093 | } | |
11094 | ||
5bd4f169 AM |
11095 | /* Finish up dynamic symbol handling. We set the contents of various |
11096 | dynamic sections here. */ | |
11097 | ||
b34976b6 | 11098 | static bfd_boolean |
4ce794b7 AM |
11099 | ppc64_elf_finish_dynamic_symbol (bfd *output_bfd, |
11100 | struct bfd_link_info *info, | |
11101 | struct elf_link_hash_entry *h, | |
11102 | Elf_Internal_Sym *sym) | |
5bd4f169 | 11103 | { |
65f38f15 | 11104 | struct ppc_link_hash_table *htab; |
8387904d AM |
11105 | struct plt_entry *ent; |
11106 | Elf_Internal_Rela rela; | |
11107 | bfd_byte *loc; | |
5bd4f169 | 11108 | |
65f38f15 | 11109 | htab = ppc_hash_table (info); |
5bd4f169 | 11110 | |
8387904d AM |
11111 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) |
11112 | if (ent->plt.offset != (bfd_vma) -1) | |
11113 | { | |
11114 | /* This symbol has an entry in the procedure linkage | |
11115 | table. Set it up. */ | |
11116 | ||
11117 | if (htab->plt == NULL | |
11118 | || htab->relplt == NULL | |
11119 | || htab->glink == NULL) | |
11120 | abort (); | |
11121 | ||
11122 | /* Create a JMP_SLOT reloc to inform the dynamic linker to | |
11123 | fill in the PLT entry. */ | |
11124 | rela.r_offset = (htab->plt->output_section->vma | |
11125 | + htab->plt->output_offset | |
11126 | + ent->plt.offset); | |
11127 | rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT); | |
11128 | rela.r_addend = ent->addend; | |
11129 | ||
11130 | loc = htab->relplt->contents; | |
11131 | loc += ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE) / PLT_ENTRY_SIZE | |
11132 | * sizeof (Elf64_External_Rela)); | |
11133 | bfd_elf64_swap_reloca_out (output_bfd, &rela, loc); | |
11134 | } | |
5bd4f169 | 11135 | |
f5385ebf | 11136 | if (h->needs_copy) |
5bd4f169 | 11137 | { |
5bd4f169 | 11138 | Elf_Internal_Rela rela; |
947216bf | 11139 | bfd_byte *loc; |
5bd4f169 | 11140 | |
65f38f15 | 11141 | /* This symbol needs a copy reloc. Set it up. */ |
5bd4f169 | 11142 | |
65f38f15 AM |
11143 | if (h->dynindx == -1 |
11144 | || (h->root.type != bfd_link_hash_defined | |
11145 | && h->root.type != bfd_link_hash_defweak) | |
4ce794b7 | 11146 | || htab->relbss == NULL) |
65f38f15 | 11147 | abort (); |
5bd4f169 AM |
11148 | |
11149 | rela.r_offset = (h->root.u.def.value | |
11150 | + h->root.u.def.section->output_section->vma | |
11151 | + h->root.u.def.section->output_offset); | |
11152 | rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY); | |
11153 | rela.r_addend = 0; | |
4ce794b7 AM |
11154 | loc = htab->relbss->contents; |
11155 | loc += htab->relbss->reloc_count++ * sizeof (Elf64_External_Rela); | |
65f38f15 | 11156 | bfd_elf64_swap_reloca_out (output_bfd, &rela, loc); |
5bd4f169 AM |
11157 | } |
11158 | ||
5bd4f169 AM |
11159 | /* Mark some specially defined symbols as absolute. */ |
11160 | if (strcmp (h->root.root.string, "_DYNAMIC") == 0) | |
11161 | sym->st_shndx = SHN_ABS; | |
11162 | ||
b34976b6 | 11163 | return TRUE; |
5bd4f169 AM |
11164 | } |
11165 | ||
65f38f15 AM |
11166 | /* Used to decide how to sort relocs in an optimal manner for the |
11167 | dynamic linker, before writing them out. */ | |
11168 | ||
11169 | static enum elf_reloc_type_class | |
4ce794b7 | 11170 | ppc64_elf_reloc_type_class (const Elf_Internal_Rela *rela) |
65f38f15 | 11171 | { |
04c9666a | 11172 | enum elf_ppc64_reloc_type r_type; |
a33d1f77 | 11173 | |
4ce794b7 | 11174 | r_type = ELF64_R_TYPE (rela->r_info); |
a33d1f77 | 11175 | switch (r_type) |
65f38f15 AM |
11176 | { |
11177 | case R_PPC64_RELATIVE: | |
11178 | return reloc_class_relative; | |
11179 | case R_PPC64_JMP_SLOT: | |
11180 | return reloc_class_plt; | |
11181 | case R_PPC64_COPY: | |
11182 | return reloc_class_copy; | |
11183 | default: | |
11184 | return reloc_class_normal; | |
11185 | } | |
11186 | } | |
11187 | ||
5bd4f169 AM |
11188 | /* Finish up the dynamic sections. */ |
11189 | ||
b34976b6 | 11190 | static bfd_boolean |
4ce794b7 AM |
11191 | ppc64_elf_finish_dynamic_sections (bfd *output_bfd, |
11192 | struct bfd_link_info *info) | |
5bd4f169 | 11193 | { |
65f38f15 AM |
11194 | struct ppc_link_hash_table *htab; |
11195 | bfd *dynobj; | |
5bd4f169 | 11196 | asection *sdyn; |
5bd4f169 | 11197 | |
65f38f15 AM |
11198 | htab = ppc_hash_table (info); |
11199 | dynobj = htab->elf.dynobj; | |
5bd4f169 AM |
11200 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); |
11201 | ||
65f38f15 | 11202 | if (htab->elf.dynamic_sections_created) |
5bd4f169 | 11203 | { |
5bd4f169 AM |
11204 | Elf64_External_Dyn *dyncon, *dynconend; |
11205 | ||
4ce794b7 | 11206 | if (sdyn == NULL || htab->got == NULL) |
65f38f15 | 11207 | abort (); |
5bd4f169 AM |
11208 | |
11209 | dyncon = (Elf64_External_Dyn *) sdyn->contents; | |
eea6121a | 11210 | dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size); |
5bd4f169 AM |
11211 | for (; dyncon < dynconend; dyncon++) |
11212 | { | |
11213 | Elf_Internal_Dyn dyn; | |
19397422 | 11214 | asection *s; |
5bd4f169 AM |
11215 | |
11216 | bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn); | |
11217 | ||
11218 | switch (dyn.d_tag) | |
11219 | { | |
65f38f15 AM |
11220 | default: |
11221 | continue; | |
5bd4f169 | 11222 | |
5d1634d7 | 11223 | case DT_PPC64_GLINK: |
4ce794b7 | 11224 | s = htab->glink; |
6348e046 | 11225 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
ad8e1ba5 AM |
11226 | /* We stupidly defined DT_PPC64_GLINK to be the start |
11227 | of glink rather than the first entry point, which is | |
11228 | what ld.so needs, and now have a bigger stub to | |
11229 | support automatic multiple TOCs. */ | |
11230 | dyn.d_un.d_ptr += GLINK_CALL_STUB_SIZE - 32; | |
5d1634d7 AM |
11231 | break; |
11232 | ||
19397422 AM |
11233 | case DT_PPC64_OPD: |
11234 | s = bfd_get_section_by_name (output_bfd, ".opd"); | |
6348e046 AM |
11235 | if (s == NULL) |
11236 | continue; | |
11237 | dyn.d_un.d_ptr = s->vma; | |
19397422 AM |
11238 | break; |
11239 | ||
11240 | case DT_PPC64_OPDSZ: | |
11241 | s = bfd_get_section_by_name (output_bfd, ".opd"); | |
6348e046 AM |
11242 | if (s == NULL) |
11243 | continue; | |
eea6121a | 11244 | dyn.d_un.d_val = s->size; |
19397422 AM |
11245 | break; |
11246 | ||
65f38f15 | 11247 | case DT_PLTGOT: |
4ce794b7 | 11248 | s = htab->plt; |
6348e046 | 11249 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
65f38f15 AM |
11250 | break; |
11251 | ||
11252 | case DT_JMPREL: | |
4ce794b7 | 11253 | s = htab->relplt; |
6348e046 | 11254 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
65f38f15 | 11255 | break; |
5bd4f169 | 11256 | |
65f38f15 | 11257 | case DT_PLTRELSZ: |
eea6121a | 11258 | dyn.d_un.d_val = htab->relplt->size; |
5d1634d7 AM |
11259 | break; |
11260 | ||
11261 | case DT_RELASZ: | |
11262 | /* Don't count procedure linkage table relocs in the | |
11263 | overall reloc count. */ | |
4ce794b7 | 11264 | s = htab->relplt; |
6348e046 AM |
11265 | if (s == NULL) |
11266 | continue; | |
eea6121a | 11267 | dyn.d_un.d_val -= s->size; |
6348e046 AM |
11268 | break; |
11269 | ||
11270 | case DT_RELA: | |
11271 | /* We may not be using the standard ELF linker script. | |
11272 | If .rela.plt is the first .rela section, we adjust | |
11273 | DT_RELA to not include it. */ | |
4ce794b7 | 11274 | s = htab->relplt; |
6348e046 AM |
11275 | if (s == NULL) |
11276 | continue; | |
11277 | if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset) | |
11278 | continue; | |
eea6121a | 11279 | dyn.d_un.d_ptr += s->size; |
65f38f15 | 11280 | break; |
5bd4f169 | 11281 | } |
5bd4f169 | 11282 | |
65f38f15 | 11283 | bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); |
5bd4f169 | 11284 | } |
5bd4f169 AM |
11285 | } |
11286 | ||
eea6121a | 11287 | if (htab->got != NULL && htab->got->size != 0) |
5d1634d7 AM |
11288 | { |
11289 | /* Fill in the first entry in the global offset table. | |
11290 | We use it to hold the link-time TOCbase. */ | |
11291 | bfd_put_64 (output_bfd, | |
60ee0d4a | 11292 | elf_gp (output_bfd) + TOC_BASE_OFF, |
4ce794b7 | 11293 | htab->got->contents); |
5d1634d7 AM |
11294 | |
11295 | /* Set .got entry size. */ | |
4ce794b7 | 11296 | elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 8; |
5d1634d7 AM |
11297 | } |
11298 | ||
eea6121a | 11299 | if (htab->plt != NULL && htab->plt->size != 0) |
5d1634d7 AM |
11300 | { |
11301 | /* Set .plt entry size. */ | |
4ce794b7 | 11302 | elf_section_data (htab->plt->output_section)->this_hdr.sh_entsize |
5d1634d7 AM |
11303 | = PLT_ENTRY_SIZE; |
11304 | } | |
11305 | ||
e717da7e | 11306 | /* We need to handle writing out multiple GOT sections ourselves, |
7b53ace3 AM |
11307 | since we didn't add them to DYNOBJ. We know dynobj is the first |
11308 | bfd. */ | |
e717da7e AM |
11309 | while ((dynobj = dynobj->link_next) != NULL) |
11310 | { | |
11311 | asection *s; | |
7b53ace3 | 11312 | |
ee75fd95 | 11313 | if (!is_ppc64_elf_target (dynobj->xvec)) |
7b53ace3 AM |
11314 | continue; |
11315 | ||
e717da7e AM |
11316 | s = ppc64_elf_tdata (dynobj)->got; |
11317 | if (s != NULL | |
eea6121a | 11318 | && s->size != 0 |
e717da7e AM |
11319 | && s->output_section != bfd_abs_section_ptr |
11320 | && !bfd_set_section_contents (output_bfd, s->output_section, | |
11321 | s->contents, s->output_offset, | |
eea6121a | 11322 | s->size)) |
e717da7e AM |
11323 | return FALSE; |
11324 | s = ppc64_elf_tdata (dynobj)->relgot; | |
11325 | if (s != NULL | |
eea6121a | 11326 | && s->size != 0 |
e717da7e AM |
11327 | && s->output_section != bfd_abs_section_ptr |
11328 | && !bfd_set_section_contents (output_bfd, s->output_section, | |
11329 | s->contents, s->output_offset, | |
eea6121a | 11330 | s->size)) |
e717da7e AM |
11331 | return FALSE; |
11332 | } | |
f6c52c13 | 11333 | |
b34976b6 | 11334 | return TRUE; |
5bd4f169 AM |
11335 | } |
11336 | ||
5bd4f169 | 11337 | #include "elf64-target.h" |