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 | |
24718e3b | 64 | #define ELF_COMMONPAGESIZE 0x1000 |
ad8e1ba5 AM |
65 | #define elf_info_to_howto ppc64_elf_info_to_howto |
66 | ||
67 | #define elf_backend_want_got_sym 0 | |
68 | #define elf_backend_want_plt_sym 0 | |
69 | #define elf_backend_plt_alignment 3 | |
70 | #define elf_backend_plt_not_loaded 1 | |
ad8e1ba5 | 71 | #define elf_backend_got_header_size 8 |
ad8e1ba5 AM |
72 | #define elf_backend_can_gc_sections 1 |
73 | #define elf_backend_can_refcount 1 | |
74 | #define elf_backend_rela_normal 1 | |
75 | ||
e717da7e | 76 | #define bfd_elf64_mkobject ppc64_elf_mkobject |
ad8e1ba5 AM |
77 | #define bfd_elf64_bfd_reloc_type_lookup ppc64_elf_reloc_type_lookup |
78 | #define bfd_elf64_bfd_merge_private_bfd_data ppc64_elf_merge_private_bfd_data | |
79 | #define bfd_elf64_new_section_hook ppc64_elf_new_section_hook | |
80 | #define bfd_elf64_bfd_link_hash_table_create ppc64_elf_link_hash_table_create | |
81 | #define bfd_elf64_bfd_link_hash_table_free ppc64_elf_link_hash_table_free | |
90e3cdf2 | 82 | #define bfd_elf64_get_synthetic_symtab ppc64_elf_get_synthetic_symtab |
ad8e1ba5 AM |
83 | |
84 | #define elf_backend_object_p ppc64_elf_object_p | |
d37c89e5 AM |
85 | #define elf_backend_grok_prstatus ppc64_elf_grok_prstatus |
86 | #define elf_backend_grok_psinfo ppc64_elf_grok_psinfo | |
ad8e1ba5 AM |
87 | #define elf_backend_create_dynamic_sections ppc64_elf_create_dynamic_sections |
88 | #define elf_backend_copy_indirect_symbol ppc64_elf_copy_indirect_symbol | |
555cd476 | 89 | #define elf_backend_add_symbol_hook ppc64_elf_add_symbol_hook |
8387904d AM |
90 | #define elf_backend_check_directives ppc64_elf_check_directives |
91 | #define elf_backend_archive_symbol_lookup ppc64_elf_archive_symbol_lookup | |
ad8e1ba5 | 92 | #define elf_backend_check_relocs ppc64_elf_check_relocs |
64d03ab5 | 93 | #define elf_backend_gc_mark_dynamic_ref ppc64_elf_gc_mark_dynamic_ref |
ad8e1ba5 AM |
94 | #define elf_backend_gc_mark_hook ppc64_elf_gc_mark_hook |
95 | #define elf_backend_gc_sweep_hook ppc64_elf_gc_sweep_hook | |
96 | #define elf_backend_adjust_dynamic_symbol ppc64_elf_adjust_dynamic_symbol | |
97 | #define elf_backend_hide_symbol ppc64_elf_hide_symbol | |
98 | #define elf_backend_always_size_sections ppc64_elf_func_desc_adjust | |
99 | #define elf_backend_size_dynamic_sections ppc64_elf_size_dynamic_sections | |
60124e18 | 100 | #define elf_backend_action_discarded ppc64_elf_action_discarded |
ad8e1ba5 AM |
101 | #define elf_backend_relocate_section ppc64_elf_relocate_section |
102 | #define elf_backend_finish_dynamic_symbol ppc64_elf_finish_dynamic_symbol | |
103 | #define elf_backend_reloc_type_class ppc64_elf_reloc_type_class | |
104 | #define elf_backend_finish_dynamic_sections ppc64_elf_finish_dynamic_sections | |
754021d0 | 105 | #define elf_backend_link_output_symbol_hook ppc64_elf_output_symbol_hook |
29ef7005 | 106 | #define elf_backend_special_sections ppc64_elf_special_sections |
ad8e1ba5 | 107 | |
5bd4f169 AM |
108 | /* The name of the dynamic interpreter. This is put in the .interp |
109 | section. */ | |
110 | #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1" | |
111 | ||
112 | /* The size in bytes of an entry in the procedure linkage table. */ | |
113 | #define PLT_ENTRY_SIZE 24 | |
114 | ||
115 | /* The initial size of the plt reserved for the dynamic linker. */ | |
5d1634d7 | 116 | #define PLT_INITIAL_ENTRY_SIZE PLT_ENTRY_SIZE |
5bd4f169 AM |
117 | |
118 | /* TOC base pointers offset from start of TOC. */ | |
411e1bfb AM |
119 | #define TOC_BASE_OFF 0x8000 |
120 | ||
121 | /* Offset of tp and dtp pointers from start of TLS block. */ | |
122 | #define TP_OFFSET 0x7000 | |
123 | #define DTP_OFFSET 0x8000 | |
5bd4f169 | 124 | |
ad8e1ba5 AM |
125 | /* .plt call stub instructions. The normal stub is like this, but |
126 | sometimes the .plt entry crosses a 64k boundary and we need to | |
127 | insert an addis to adjust r12. */ | |
128 | #define PLT_CALL_STUB_SIZE (7*4) | |
5d1634d7 AM |
129 | #define ADDIS_R12_R2 0x3d820000 /* addis %r12,%r2,xxx@ha */ |
130 | #define STD_R2_40R1 0xf8410028 /* std %r2,40(%r1) */ | |
131 | #define LD_R11_0R12 0xe96c0000 /* ld %r11,xxx+0@l(%r12) */ | |
132 | #define LD_R2_0R12 0xe84c0000 /* ld %r2,xxx+8@l(%r12) */ | |
133 | #define MTCTR_R11 0x7d6903a6 /* mtctr %r11 */ | |
134 | /* ld %r11,xxx+16@l(%r12) */ | |
135 | #define BCTR 0x4e800420 /* bctr */ | |
136 | ||
5d1634d7 | 137 | |
ad8e1ba5 AM |
138 | #define ADDIS_R2_R2 0x3c420000 /* addis %r2,%r2,off@ha */ |
139 | #define ADDI_R2_R2 0x38420000 /* addi %r2,%r2,off@l */ | |
140 | ||
141 | #define LD_R2_40R1 0xe8410028 /* ld %r2,40(%r1) */ | |
142 | ||
143 | /* glink call stub instructions. We enter with the index in R0, and the | |
144 | address of glink entry in CTR. From that, we can calculate PLT0. */ | |
145 | #define GLINK_CALL_STUB_SIZE (16*4) | |
146 | #define MFCTR_R12 0x7d8902a6 /* mfctr %r12 */ | |
147 | #define SLDI_R11_R0_3 0x780b1f24 /* sldi %r11,%r0,3 */ | |
148 | #define ADDIC_R2_R0_32K 0x34408000 /* addic. %r2,%r0,-32768 */ | |
149 | #define SUB_R12_R12_R11 0x7d8b6050 /* sub %r12,%r12,%r11 */ | |
150 | #define SRADI_R2_R2_63 0x7c42fe76 /* sradi %r2,%r2,63 */ | |
151 | #define SLDI_R11_R0_2 0x780b1764 /* sldi %r11,%r0,2 */ | |
152 | #define AND_R2_R2_R11 0x7c425838 /* and %r2,%r2,%r11 */ | |
153 | /* sub %r12,%r12,%r11 */ | |
154 | #define ADD_R12_R12_R2 0x7d8c1214 /* add %r12,%r12,%r2 */ | |
155 | #define ADDIS_R12_R12 0x3d8c0000 /* addis %r12,%r12,xxx@ha */ | |
156 | /* ld %r11,xxx@l(%r12) */ | |
157 | #define ADDI_R12_R12 0x398c0000 /* addi %r12,%r12,xxx@l */ | |
158 | /* ld %r2,8(%r12) */ | |
159 | /* mtctr %r11 */ | |
160 | /* ld %r11,16(%r12) */ | |
161 | /* bctr */ | |
5d1634d7 AM |
162 | |
163 | /* Pad with this. */ | |
164 | #define NOP 0x60000000 | |
165 | ||
721956f4 AM |
166 | /* Some other nops. */ |
167 | #define CROR_151515 0x4def7b82 | |
168 | #define CROR_313131 0x4ffffb82 | |
169 | ||
cedb70c5 | 170 | /* .glink entries for the first 32k functions are two instructions. */ |
5d1634d7 AM |
171 | #define LI_R0_0 0x38000000 /* li %r0,0 */ |
172 | #define B_DOT 0x48000000 /* b . */ | |
173 | ||
174 | /* After that, we need two instructions to load the index, followed by | |
175 | a branch. */ | |
176 | #define LIS_R0_0 0x3c000000 /* lis %r0,0 */ | |
10ed1bba | 177 | #define ORI_R0_R0_0 0x60000000 /* ori %r0,%r0,0 */ |
41bd81ab | 178 | |
deb0e272 AM |
179 | /* Instructions used by the save and restore reg functions. */ |
180 | #define STD_R0_0R1 0xf8010000 /* std %r0,0(%r1) */ | |
181 | #define STD_R0_0R12 0xf80c0000 /* std %r0,0(%r12) */ | |
182 | #define LD_R0_0R1 0xe8010000 /* ld %r0,0(%r1) */ | |
183 | #define LD_R0_0R12 0xe80c0000 /* ld %r0,0(%r12) */ | |
82bd7b59 AM |
184 | #define STFD_FR0_0R1 0xd8010000 /* stfd %fr0,0(%r1) */ |
185 | #define LFD_FR0_0R1 0xc8010000 /* lfd %fr0,0(%r1) */ | |
deb0e272 AM |
186 | #define LI_R12_0 0x39800000 /* li %r12,0 */ |
187 | #define STVX_VR0_R12_R0 0x7c0c01ce /* stvx %v0,%r12,%r0 */ | |
188 | #define LVX_VR0_R12_R0 0x7c0c00ce /* lvx %v0,%r12,%r0 */ | |
189 | #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */ | |
82bd7b59 AM |
190 | #define BLR 0x4e800020 /* blr */ |
191 | ||
41bd81ab AM |
192 | /* Since .opd is an array of descriptors and each entry will end up |
193 | with identical R_PPC64_RELATIVE relocs, there is really no need to | |
194 | propagate .opd relocs; The dynamic linker should be taught to | |
1e2f5b6e | 195 | relocate .opd without reloc entries. */ |
41bd81ab AM |
196 | #ifndef NO_OPD_RELOCS |
197 | #define NO_OPD_RELOCS 0 | |
198 | #endif | |
5bd4f169 | 199 | \f |
f5e87a1d | 200 | #define ONES(n) (((bfd_vma) 1 << ((n) - 1) << 1) - 1) |
b34976b6 | 201 | |
5bd4f169 | 202 | /* Relocation HOWTO's. */ |
04c9666a | 203 | static reloc_howto_type *ppc64_elf_howto_table[(int) R_PPC64_max]; |
5bd4f169 AM |
204 | |
205 | static reloc_howto_type ppc64_elf_howto_raw[] = { | |
206 | /* This reloc does nothing. */ | |
207 | HOWTO (R_PPC64_NONE, /* type */ | |
208 | 0, /* rightshift */ | |
411e1bfb AM |
209 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
210 | 32, /* bitsize */ | |
b34976b6 | 211 | FALSE, /* pc_relative */ |
5bd4f169 | 212 | 0, /* bitpos */ |
f5e87a1d | 213 | complain_overflow_dont, /* complain_on_overflow */ |
5bd4f169 AM |
214 | bfd_elf_generic_reloc, /* special_function */ |
215 | "R_PPC64_NONE", /* name */ | |
b34976b6 | 216 | FALSE, /* partial_inplace */ |
d006db6c | 217 | 0, /* src_mask */ |
5bd4f169 | 218 | 0, /* dst_mask */ |
b34976b6 | 219 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
220 | |
221 | /* A standard 32 bit relocation. */ | |
222 | HOWTO (R_PPC64_ADDR32, /* type */ | |
223 | 0, /* rightshift */ | |
224 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
225 | 32, /* bitsize */ | |
b34976b6 | 226 | FALSE, /* pc_relative */ |
5bd4f169 AM |
227 | 0, /* bitpos */ |
228 | complain_overflow_bitfield, /* complain_on_overflow */ | |
229 | bfd_elf_generic_reloc, /* special_function */ | |
230 | "R_PPC64_ADDR32", /* name */ | |
b34976b6 | 231 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
232 | 0, /* src_mask */ |
233 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 234 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
235 | |
236 | /* An absolute 26 bit branch; the lower two bits must be zero. | |
237 | FIXME: we don't check that, we just clear them. */ | |
238 | HOWTO (R_PPC64_ADDR24, /* type */ | |
239 | 0, /* rightshift */ | |
240 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
241 | 26, /* bitsize */ | |
b34976b6 | 242 | FALSE, /* pc_relative */ |
5bd4f169 AM |
243 | 0, /* bitpos */ |
244 | complain_overflow_bitfield, /* complain_on_overflow */ | |
245 | bfd_elf_generic_reloc, /* special_function */ | |
246 | "R_PPC64_ADDR24", /* name */ | |
b34976b6 | 247 | FALSE, /* partial_inplace */ |
d006db6c | 248 | 0, /* src_mask */ |
f5e87a1d | 249 | 0x03fffffc, /* dst_mask */ |
b34976b6 | 250 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
251 | |
252 | /* A standard 16 bit relocation. */ | |
253 | HOWTO (R_PPC64_ADDR16, /* type */ | |
254 | 0, /* rightshift */ | |
255 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
256 | 16, /* bitsize */ | |
b34976b6 | 257 | FALSE, /* pc_relative */ |
5bd4f169 AM |
258 | 0, /* bitpos */ |
259 | complain_overflow_bitfield, /* complain_on_overflow */ | |
260 | bfd_elf_generic_reloc, /* special_function */ | |
261 | "R_PPC64_ADDR16", /* name */ | |
b34976b6 | 262 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
263 | 0, /* src_mask */ |
264 | 0xffff, /* dst_mask */ | |
b34976b6 | 265 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
266 | |
267 | /* A 16 bit relocation without overflow. */ | |
268 | HOWTO (R_PPC64_ADDR16_LO, /* type */ | |
269 | 0, /* rightshift */ | |
270 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
271 | 16, /* bitsize */ | |
b34976b6 | 272 | FALSE, /* pc_relative */ |
5bd4f169 AM |
273 | 0, /* bitpos */ |
274 | complain_overflow_dont,/* complain_on_overflow */ | |
275 | bfd_elf_generic_reloc, /* special_function */ | |
276 | "R_PPC64_ADDR16_LO", /* name */ | |
b34976b6 | 277 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
278 | 0, /* src_mask */ |
279 | 0xffff, /* dst_mask */ | |
b34976b6 | 280 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
281 | |
282 | /* Bits 16-31 of an address. */ | |
283 | HOWTO (R_PPC64_ADDR16_HI, /* type */ | |
284 | 16, /* rightshift */ | |
285 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
286 | 16, /* bitsize */ | |
b34976b6 | 287 | FALSE, /* pc_relative */ |
5bd4f169 AM |
288 | 0, /* bitpos */ |
289 | complain_overflow_dont, /* complain_on_overflow */ | |
290 | bfd_elf_generic_reloc, /* special_function */ | |
291 | "R_PPC64_ADDR16_HI", /* name */ | |
b34976b6 | 292 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
293 | 0, /* src_mask */ |
294 | 0xffff, /* dst_mask */ | |
b34976b6 | 295 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
296 | |
297 | /* Bits 16-31 of an address, plus 1 if the contents of the low 16 | |
298 | bits, treated as a signed number, is negative. */ | |
299 | HOWTO (R_PPC64_ADDR16_HA, /* type */ | |
300 | 16, /* rightshift */ | |
301 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
302 | 16, /* bitsize */ | |
b34976b6 | 303 | FALSE, /* pc_relative */ |
5bd4f169 AM |
304 | 0, /* bitpos */ |
305 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 306 | ppc64_elf_ha_reloc, /* special_function */ |
5bd4f169 | 307 | "R_PPC64_ADDR16_HA", /* name */ |
b34976b6 | 308 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
309 | 0, /* src_mask */ |
310 | 0xffff, /* dst_mask */ | |
b34976b6 | 311 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
312 | |
313 | /* An absolute 16 bit branch; the lower two bits must be zero. | |
314 | FIXME: we don't check that, we just clear them. */ | |
315 | HOWTO (R_PPC64_ADDR14, /* type */ | |
316 | 0, /* rightshift */ | |
317 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
318 | 16, /* bitsize */ | |
b34976b6 | 319 | FALSE, /* pc_relative */ |
5bd4f169 AM |
320 | 0, /* bitpos */ |
321 | complain_overflow_bitfield, /* complain_on_overflow */ | |
2441e016 | 322 | ppc64_elf_branch_reloc, /* special_function */ |
5bd4f169 | 323 | "R_PPC64_ADDR14", /* name */ |
b34976b6 | 324 | FALSE, /* partial_inplace */ |
d006db6c | 325 | 0, /* src_mask */ |
f5e87a1d | 326 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 327 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
328 | |
329 | /* An absolute 16 bit branch, for which bit 10 should be set to | |
330 | indicate that the branch is expected to be taken. The lower two | |
331 | bits must be zero. */ | |
332 | HOWTO (R_PPC64_ADDR14_BRTAKEN, /* type */ | |
333 | 0, /* rightshift */ | |
334 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
335 | 16, /* bitsize */ | |
b34976b6 | 336 | FALSE, /* pc_relative */ |
5bd4f169 AM |
337 | 0, /* bitpos */ |
338 | complain_overflow_bitfield, /* complain_on_overflow */ | |
805fc799 | 339 | ppc64_elf_brtaken_reloc, /* special_function */ |
5bd4f169 | 340 | "R_PPC64_ADDR14_BRTAKEN",/* name */ |
b34976b6 | 341 | FALSE, /* partial_inplace */ |
d006db6c | 342 | 0, /* src_mask */ |
f5e87a1d | 343 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 344 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
345 | |
346 | /* An absolute 16 bit branch, for which bit 10 should be set to | |
347 | indicate that the branch is not expected to be taken. The lower | |
348 | two bits must be zero. */ | |
349 | HOWTO (R_PPC64_ADDR14_BRNTAKEN, /* type */ | |
350 | 0, /* rightshift */ | |
351 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
352 | 16, /* bitsize */ | |
b34976b6 | 353 | FALSE, /* pc_relative */ |
5bd4f169 AM |
354 | 0, /* bitpos */ |
355 | complain_overflow_bitfield, /* complain_on_overflow */ | |
805fc799 | 356 | ppc64_elf_brtaken_reloc, /* special_function */ |
5bd4f169 | 357 | "R_PPC64_ADDR14_BRNTAKEN",/* name */ |
b34976b6 | 358 | FALSE, /* partial_inplace */ |
d006db6c | 359 | 0, /* src_mask */ |
f5e87a1d | 360 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 361 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
362 | |
363 | /* A relative 26 bit branch; the lower two bits must be zero. */ | |
364 | HOWTO (R_PPC64_REL24, /* type */ | |
365 | 0, /* rightshift */ | |
366 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
367 | 26, /* bitsize */ | |
b34976b6 | 368 | TRUE, /* pc_relative */ |
5bd4f169 AM |
369 | 0, /* bitpos */ |
370 | complain_overflow_signed, /* complain_on_overflow */ | |
2441e016 | 371 | ppc64_elf_branch_reloc, /* special_function */ |
5bd4f169 | 372 | "R_PPC64_REL24", /* name */ |
b34976b6 | 373 | FALSE, /* partial_inplace */ |
d006db6c | 374 | 0, /* src_mask */ |
f5e87a1d | 375 | 0x03fffffc, /* dst_mask */ |
b34976b6 | 376 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
377 | |
378 | /* A relative 16 bit branch; the lower two bits must be zero. */ | |
379 | HOWTO (R_PPC64_REL14, /* type */ | |
380 | 0, /* rightshift */ | |
381 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
382 | 16, /* bitsize */ | |
b34976b6 | 383 | TRUE, /* pc_relative */ |
5bd4f169 AM |
384 | 0, /* bitpos */ |
385 | complain_overflow_signed, /* complain_on_overflow */ | |
2441e016 | 386 | ppc64_elf_branch_reloc, /* special_function */ |
5bd4f169 | 387 | "R_PPC64_REL14", /* name */ |
b34976b6 | 388 | FALSE, /* partial_inplace */ |
d006db6c | 389 | 0, /* src_mask */ |
f5e87a1d | 390 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 391 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
392 | |
393 | /* A relative 16 bit branch. Bit 10 should be set to indicate that | |
394 | the branch is expected to be taken. The lower two bits must be | |
395 | zero. */ | |
396 | HOWTO (R_PPC64_REL14_BRTAKEN, /* type */ | |
397 | 0, /* rightshift */ | |
398 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
399 | 16, /* bitsize */ | |
b34976b6 | 400 | TRUE, /* pc_relative */ |
5bd4f169 AM |
401 | 0, /* bitpos */ |
402 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 403 | ppc64_elf_brtaken_reloc, /* special_function */ |
5bd4f169 | 404 | "R_PPC64_REL14_BRTAKEN", /* name */ |
b34976b6 | 405 | FALSE, /* partial_inplace */ |
d006db6c | 406 | 0, /* src_mask */ |
f5e87a1d | 407 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 408 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
409 | |
410 | /* A relative 16 bit branch. Bit 10 should be set to indicate that | |
411 | the branch is not expected to be taken. The lower two bits must | |
412 | be zero. */ | |
413 | HOWTO (R_PPC64_REL14_BRNTAKEN, /* type */ | |
414 | 0, /* rightshift */ | |
415 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
416 | 16, /* bitsize */ | |
b34976b6 | 417 | TRUE, /* pc_relative */ |
5bd4f169 AM |
418 | 0, /* bitpos */ |
419 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 420 | ppc64_elf_brtaken_reloc, /* special_function */ |
5bd4f169 | 421 | "R_PPC64_REL14_BRNTAKEN",/* name */ |
b34976b6 | 422 | FALSE, /* partial_inplace */ |
d006db6c | 423 | 0, /* src_mask */ |
f5e87a1d | 424 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 425 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
426 | |
427 | /* Like R_PPC64_ADDR16, but referring to the GOT table entry for the | |
428 | symbol. */ | |
429 | HOWTO (R_PPC64_GOT16, /* type */ | |
430 | 0, /* rightshift */ | |
431 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
432 | 16, /* bitsize */ | |
b34976b6 | 433 | FALSE, /* pc_relative */ |
5bd4f169 AM |
434 | 0, /* bitpos */ |
435 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 436 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 437 | "R_PPC64_GOT16", /* name */ |
b34976b6 | 438 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
439 | 0, /* src_mask */ |
440 | 0xffff, /* dst_mask */ | |
b34976b6 | 441 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
442 | |
443 | /* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for | |
444 | the symbol. */ | |
445 | HOWTO (R_PPC64_GOT16_LO, /* type */ | |
446 | 0, /* rightshift */ | |
447 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
448 | 16, /* bitsize */ | |
b34976b6 | 449 | FALSE, /* pc_relative */ |
5bd4f169 AM |
450 | 0, /* bitpos */ |
451 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 452 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 453 | "R_PPC64_GOT16_LO", /* name */ |
b34976b6 | 454 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
455 | 0, /* src_mask */ |
456 | 0xffff, /* dst_mask */ | |
b34976b6 | 457 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
458 | |
459 | /* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for | |
460 | the symbol. */ | |
461 | HOWTO (R_PPC64_GOT16_HI, /* type */ | |
462 | 16, /* rightshift */ | |
463 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
464 | 16, /* bitsize */ | |
b34976b6 | 465 | FALSE, /* pc_relative */ |
5bd4f169 AM |
466 | 0, /* bitpos */ |
467 | complain_overflow_dont,/* complain_on_overflow */ | |
805fc799 | 468 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 469 | "R_PPC64_GOT16_HI", /* name */ |
b34976b6 | 470 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
471 | 0, /* src_mask */ |
472 | 0xffff, /* dst_mask */ | |
b34976b6 | 473 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
474 | |
475 | /* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for | |
476 | the symbol. */ | |
477 | HOWTO (R_PPC64_GOT16_HA, /* type */ | |
478 | 16, /* rightshift */ | |
479 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
480 | 16, /* bitsize */ | |
b34976b6 | 481 | FALSE, /* pc_relative */ |
5bd4f169 AM |
482 | 0, /* bitpos */ |
483 | complain_overflow_dont,/* complain_on_overflow */ | |
805fc799 | 484 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 485 | "R_PPC64_GOT16_HA", /* name */ |
b34976b6 | 486 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
487 | 0, /* src_mask */ |
488 | 0xffff, /* dst_mask */ | |
b34976b6 | 489 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
490 | |
491 | /* This is used only by the dynamic linker. The symbol should exist | |
492 | both in the object being run and in some shared library. The | |
493 | dynamic linker copies the data addressed by the symbol from the | |
494 | shared library into the object, because the object being | |
495 | run has to have the data at some particular address. */ | |
496 | HOWTO (R_PPC64_COPY, /* type */ | |
497 | 0, /* rightshift */ | |
f5e87a1d AM |
498 | 0, /* this one is variable size */ |
499 | 0, /* bitsize */ | |
b34976b6 | 500 | FALSE, /* pc_relative */ |
5bd4f169 | 501 | 0, /* bitpos */ |
f5e87a1d AM |
502 | complain_overflow_dont, /* complain_on_overflow */ |
503 | ppc64_elf_unhandled_reloc, /* special_function */ | |
5bd4f169 | 504 | "R_PPC64_COPY", /* name */ |
b34976b6 | 505 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
506 | 0, /* src_mask */ |
507 | 0, /* dst_mask */ | |
b34976b6 | 508 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
509 | |
510 | /* Like R_PPC64_ADDR64, but used when setting global offset table | |
511 | entries. */ | |
512 | HOWTO (R_PPC64_GLOB_DAT, /* type */ | |
513 | 0, /* rightshift */ | |
514 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
515 | 64, /* bitsize */ | |
b34976b6 | 516 | FALSE, /* pc_relative */ |
5bd4f169 AM |
517 | 0, /* bitpos */ |
518 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 519 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 520 | "R_PPC64_GLOB_DAT", /* name */ |
b34976b6 | 521 | FALSE, /* partial_inplace */ |
5bd4f169 | 522 | 0, /* src_mask */ |
f5e87a1d | 523 | ONES (64), /* dst_mask */ |
b34976b6 | 524 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
525 | |
526 | /* Created by the link editor. Marks a procedure linkage table | |
527 | entry for a symbol. */ | |
528 | HOWTO (R_PPC64_JMP_SLOT, /* type */ | |
529 | 0, /* rightshift */ | |
530 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
531 | 0, /* bitsize */ | |
b34976b6 | 532 | FALSE, /* pc_relative */ |
5bd4f169 AM |
533 | 0, /* bitpos */ |
534 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 535 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 536 | "R_PPC64_JMP_SLOT", /* name */ |
b34976b6 | 537 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
538 | 0, /* src_mask */ |
539 | 0, /* dst_mask */ | |
b34976b6 | 540 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
541 | |
542 | /* Used only by the dynamic linker. When the object is run, this | |
543 | doubleword64 is set to the load address of the object, plus the | |
544 | addend. */ | |
545 | HOWTO (R_PPC64_RELATIVE, /* type */ | |
546 | 0, /* rightshift */ | |
547 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
548 | 64, /* bitsize */ | |
b34976b6 | 549 | FALSE, /* pc_relative */ |
5bd4f169 AM |
550 | 0, /* bitpos */ |
551 | complain_overflow_dont, /* complain_on_overflow */ | |
552 | bfd_elf_generic_reloc, /* special_function */ | |
553 | "R_PPC64_RELATIVE", /* name */ | |
b34976b6 | 554 | FALSE, /* partial_inplace */ |
5bd4f169 | 555 | 0, /* src_mask */ |
f5e87a1d | 556 | ONES (64), /* dst_mask */ |
b34976b6 | 557 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
558 | |
559 | /* Like R_PPC64_ADDR32, but may be unaligned. */ | |
560 | HOWTO (R_PPC64_UADDR32, /* type */ | |
561 | 0, /* rightshift */ | |
562 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
563 | 32, /* bitsize */ | |
b34976b6 | 564 | FALSE, /* pc_relative */ |
5bd4f169 AM |
565 | 0, /* bitpos */ |
566 | complain_overflow_bitfield, /* complain_on_overflow */ | |
567 | bfd_elf_generic_reloc, /* special_function */ | |
568 | "R_PPC64_UADDR32", /* name */ | |
b34976b6 | 569 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
570 | 0, /* src_mask */ |
571 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 572 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
573 | |
574 | /* Like R_PPC64_ADDR16, but may be unaligned. */ | |
575 | HOWTO (R_PPC64_UADDR16, /* type */ | |
576 | 0, /* rightshift */ | |
577 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
578 | 16, /* bitsize */ | |
b34976b6 | 579 | FALSE, /* pc_relative */ |
5bd4f169 AM |
580 | 0, /* bitpos */ |
581 | complain_overflow_bitfield, /* complain_on_overflow */ | |
582 | bfd_elf_generic_reloc, /* special_function */ | |
583 | "R_PPC64_UADDR16", /* name */ | |
b34976b6 | 584 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
585 | 0, /* src_mask */ |
586 | 0xffff, /* dst_mask */ | |
b34976b6 | 587 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
588 | |
589 | /* 32-bit PC relative. */ | |
590 | HOWTO (R_PPC64_REL32, /* type */ | |
591 | 0, /* rightshift */ | |
592 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
593 | 32, /* bitsize */ | |
b34976b6 | 594 | TRUE, /* pc_relative */ |
5bd4f169 | 595 | 0, /* bitpos */ |
cedb70c5 | 596 | /* FIXME: Verify. Was complain_overflow_bitfield. */ |
5bd4f169 AM |
597 | complain_overflow_signed, /* complain_on_overflow */ |
598 | bfd_elf_generic_reloc, /* special_function */ | |
599 | "R_PPC64_REL32", /* name */ | |
b34976b6 | 600 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
601 | 0, /* src_mask */ |
602 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 603 | TRUE), /* pcrel_offset */ |
5bd4f169 | 604 | |
10ed1bba | 605 | /* 32-bit relocation to the symbol's procedure linkage table. */ |
5bd4f169 AM |
606 | HOWTO (R_PPC64_PLT32, /* type */ |
607 | 0, /* rightshift */ | |
608 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
609 | 32, /* bitsize */ | |
b34976b6 | 610 | FALSE, /* pc_relative */ |
5bd4f169 AM |
611 | 0, /* bitpos */ |
612 | complain_overflow_bitfield, /* complain_on_overflow */ | |
805fc799 | 613 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 614 | "R_PPC64_PLT32", /* name */ |
b34976b6 | 615 | FALSE, /* partial_inplace */ |
5bd4f169 | 616 | 0, /* src_mask */ |
f5e87a1d | 617 | 0xffffffff, /* dst_mask */ |
b34976b6 | 618 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
619 | |
620 | /* 32-bit PC relative relocation to the symbol's procedure linkage table. | |
621 | FIXME: R_PPC64_PLTREL32 not supported. */ | |
622 | HOWTO (R_PPC64_PLTREL32, /* type */ | |
623 | 0, /* rightshift */ | |
624 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
625 | 32, /* bitsize */ | |
b34976b6 | 626 | TRUE, /* pc_relative */ |
5bd4f169 AM |
627 | 0, /* bitpos */ |
628 | complain_overflow_signed, /* complain_on_overflow */ | |
629 | bfd_elf_generic_reloc, /* special_function */ | |
630 | "R_PPC64_PLTREL32", /* name */ | |
b34976b6 | 631 | FALSE, /* partial_inplace */ |
5bd4f169 | 632 | 0, /* src_mask */ |
f5e87a1d | 633 | 0xffffffff, /* dst_mask */ |
b34976b6 | 634 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
635 | |
636 | /* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for | |
637 | the symbol. */ | |
638 | HOWTO (R_PPC64_PLT16_LO, /* type */ | |
639 | 0, /* rightshift */ | |
640 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
641 | 16, /* bitsize */ | |
b34976b6 | 642 | FALSE, /* pc_relative */ |
5bd4f169 AM |
643 | 0, /* bitpos */ |
644 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 645 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 646 | "R_PPC64_PLT16_LO", /* name */ |
b34976b6 | 647 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
648 | 0, /* src_mask */ |
649 | 0xffff, /* dst_mask */ | |
b34976b6 | 650 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
651 | |
652 | /* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for | |
653 | the symbol. */ | |
654 | HOWTO (R_PPC64_PLT16_HI, /* type */ | |
655 | 16, /* rightshift */ | |
656 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
657 | 16, /* bitsize */ | |
b34976b6 | 658 | FALSE, /* pc_relative */ |
5bd4f169 AM |
659 | 0, /* bitpos */ |
660 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 661 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 662 | "R_PPC64_PLT16_HI", /* name */ |
b34976b6 | 663 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
664 | 0, /* src_mask */ |
665 | 0xffff, /* dst_mask */ | |
b34976b6 | 666 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
667 | |
668 | /* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for | |
669 | the symbol. */ | |
670 | HOWTO (R_PPC64_PLT16_HA, /* type */ | |
671 | 16, /* rightshift */ | |
672 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
673 | 16, /* bitsize */ | |
b34976b6 | 674 | FALSE, /* pc_relative */ |
5bd4f169 AM |
675 | 0, /* bitpos */ |
676 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 677 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 678 | "R_PPC64_PLT16_HA", /* name */ |
b34976b6 | 679 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
680 | 0, /* src_mask */ |
681 | 0xffff, /* dst_mask */ | |
b34976b6 | 682 | FALSE), /* pcrel_offset */ |
5bd4f169 | 683 | |
c061c2d8 | 684 | /* 16-bit section relative relocation. */ |
5bd4f169 AM |
685 | HOWTO (R_PPC64_SECTOFF, /* type */ |
686 | 0, /* rightshift */ | |
c061c2d8 AM |
687 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
688 | 16, /* bitsize */ | |
b34976b6 | 689 | FALSE, /* pc_relative */ |
5bd4f169 AM |
690 | 0, /* bitpos */ |
691 | complain_overflow_bitfield, /* complain_on_overflow */ | |
805fc799 | 692 | ppc64_elf_sectoff_reloc, /* special_function */ |
5bd4f169 | 693 | "R_PPC64_SECTOFF", /* name */ |
b34976b6 | 694 | FALSE, /* partial_inplace */ |
5bd4f169 | 695 | 0, /* src_mask */ |
c061c2d8 | 696 | 0xffff, /* dst_mask */ |
b34976b6 | 697 | FALSE), /* pcrel_offset */ |
5bd4f169 | 698 | |
c061c2d8 | 699 | /* Like R_PPC64_SECTOFF, but no overflow warning. */ |
5bd4f169 AM |
700 | HOWTO (R_PPC64_SECTOFF_LO, /* type */ |
701 | 0, /* rightshift */ | |
702 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
703 | 16, /* bitsize */ | |
b34976b6 | 704 | FALSE, /* pc_relative */ |
5bd4f169 AM |
705 | 0, /* bitpos */ |
706 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 707 | ppc64_elf_sectoff_reloc, /* special_function */ |
5bd4f169 | 708 | "R_PPC64_SECTOFF_LO", /* name */ |
b34976b6 | 709 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
710 | 0, /* src_mask */ |
711 | 0xffff, /* dst_mask */ | |
b34976b6 | 712 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
713 | |
714 | /* 16-bit upper half section relative relocation. */ | |
715 | HOWTO (R_PPC64_SECTOFF_HI, /* type */ | |
716 | 16, /* rightshift */ | |
717 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
718 | 16, /* bitsize */ | |
b34976b6 | 719 | FALSE, /* pc_relative */ |
5bd4f169 AM |
720 | 0, /* bitpos */ |
721 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 722 | ppc64_elf_sectoff_reloc, /* special_function */ |
5bd4f169 | 723 | "R_PPC64_SECTOFF_HI", /* name */ |
b34976b6 | 724 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
725 | 0, /* src_mask */ |
726 | 0xffff, /* dst_mask */ | |
b34976b6 | 727 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
728 | |
729 | /* 16-bit upper half adjusted section relative relocation. */ | |
730 | HOWTO (R_PPC64_SECTOFF_HA, /* type */ | |
731 | 16, /* rightshift */ | |
732 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
733 | 16, /* bitsize */ | |
b34976b6 | 734 | FALSE, /* pc_relative */ |
5bd4f169 AM |
735 | 0, /* bitpos */ |
736 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 737 | ppc64_elf_sectoff_ha_reloc, /* special_function */ |
5bd4f169 | 738 | "R_PPC64_SECTOFF_HA", /* name */ |
b34976b6 | 739 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
740 | 0, /* src_mask */ |
741 | 0xffff, /* dst_mask */ | |
b34976b6 | 742 | FALSE), /* pcrel_offset */ |
5bd4f169 | 743 | |
04c9666a AM |
744 | /* Like R_PPC64_REL24 without touching the two least significant bits. */ |
745 | HOWTO (R_PPC64_REL30, /* type */ | |
5bd4f169 AM |
746 | 2, /* rightshift */ |
747 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
748 | 30, /* bitsize */ | |
b34976b6 | 749 | TRUE, /* pc_relative */ |
5bd4f169 AM |
750 | 0, /* bitpos */ |
751 | complain_overflow_dont, /* complain_on_overflow */ | |
752 | bfd_elf_generic_reloc, /* special_function */ | |
04c9666a | 753 | "R_PPC64_REL30", /* name */ |
b34976b6 | 754 | FALSE, /* partial_inplace */ |
d006db6c | 755 | 0, /* src_mask */ |
5bd4f169 | 756 | 0xfffffffc, /* dst_mask */ |
b34976b6 | 757 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
758 | |
759 | /* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */ | |
760 | ||
761 | /* A standard 64-bit relocation. */ | |
762 | HOWTO (R_PPC64_ADDR64, /* type */ | |
763 | 0, /* rightshift */ | |
764 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
765 | 64, /* bitsize */ | |
b34976b6 | 766 | FALSE, /* pc_relative */ |
5bd4f169 AM |
767 | 0, /* bitpos */ |
768 | complain_overflow_dont, /* complain_on_overflow */ | |
769 | bfd_elf_generic_reloc, /* special_function */ | |
770 | "R_PPC64_ADDR64", /* name */ | |
b34976b6 | 771 | FALSE, /* partial_inplace */ |
5bd4f169 | 772 | 0, /* src_mask */ |
f5e87a1d | 773 | ONES (64), /* dst_mask */ |
b34976b6 | 774 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
775 | |
776 | /* The bits 32-47 of an address. */ | |
777 | HOWTO (R_PPC64_ADDR16_HIGHER, /* type */ | |
778 | 32, /* rightshift */ | |
779 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
780 | 16, /* bitsize */ | |
b34976b6 | 781 | FALSE, /* pc_relative */ |
5bd4f169 AM |
782 | 0, /* bitpos */ |
783 | complain_overflow_dont, /* complain_on_overflow */ | |
784 | bfd_elf_generic_reloc, /* special_function */ | |
785 | "R_PPC64_ADDR16_HIGHER", /* name */ | |
b34976b6 | 786 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
787 | 0, /* src_mask */ |
788 | 0xffff, /* dst_mask */ | |
b34976b6 | 789 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
790 | |
791 | /* The bits 32-47 of an address, plus 1 if the contents of the low | |
792 | 16 bits, treated as a signed number, is negative. */ | |
793 | HOWTO (R_PPC64_ADDR16_HIGHERA, /* type */ | |
794 | 32, /* rightshift */ | |
795 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
796 | 16, /* bitsize */ | |
b34976b6 | 797 | FALSE, /* pc_relative */ |
5bd4f169 AM |
798 | 0, /* bitpos */ |
799 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 800 | ppc64_elf_ha_reloc, /* special_function */ |
5bd4f169 | 801 | "R_PPC64_ADDR16_HIGHERA", /* name */ |
b34976b6 | 802 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
803 | 0, /* src_mask */ |
804 | 0xffff, /* dst_mask */ | |
b34976b6 | 805 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
806 | |
807 | /* The bits 48-63 of an address. */ | |
808 | HOWTO (R_PPC64_ADDR16_HIGHEST,/* type */ | |
809 | 48, /* rightshift */ | |
810 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
811 | 16, /* bitsize */ | |
b34976b6 | 812 | FALSE, /* pc_relative */ |
5bd4f169 AM |
813 | 0, /* bitpos */ |
814 | complain_overflow_dont, /* complain_on_overflow */ | |
815 | bfd_elf_generic_reloc, /* special_function */ | |
816 | "R_PPC64_ADDR16_HIGHEST", /* name */ | |
b34976b6 | 817 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
818 | 0, /* src_mask */ |
819 | 0xffff, /* dst_mask */ | |
b34976b6 | 820 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
821 | |
822 | /* The bits 48-63 of an address, plus 1 if the contents of the low | |
823 | 16 bits, treated as a signed number, is negative. */ | |
824 | HOWTO (R_PPC64_ADDR16_HIGHESTA,/* type */ | |
825 | 48, /* rightshift */ | |
826 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
827 | 16, /* bitsize */ | |
b34976b6 | 828 | FALSE, /* pc_relative */ |
5bd4f169 AM |
829 | 0, /* bitpos */ |
830 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 831 | ppc64_elf_ha_reloc, /* special_function */ |
5bd4f169 | 832 | "R_PPC64_ADDR16_HIGHESTA", /* name */ |
b34976b6 | 833 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
834 | 0, /* src_mask */ |
835 | 0xffff, /* dst_mask */ | |
b34976b6 | 836 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
837 | |
838 | /* Like ADDR64, but may be unaligned. */ | |
839 | HOWTO (R_PPC64_UADDR64, /* type */ | |
840 | 0, /* rightshift */ | |
841 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
842 | 64, /* bitsize */ | |
b34976b6 | 843 | FALSE, /* pc_relative */ |
5bd4f169 AM |
844 | 0, /* bitpos */ |
845 | complain_overflow_dont, /* complain_on_overflow */ | |
846 | bfd_elf_generic_reloc, /* special_function */ | |
847 | "R_PPC64_UADDR64", /* name */ | |
b34976b6 | 848 | FALSE, /* partial_inplace */ |
5bd4f169 | 849 | 0, /* src_mask */ |
f5e87a1d | 850 | ONES (64), /* dst_mask */ |
b34976b6 | 851 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
852 | |
853 | /* 64-bit relative relocation. */ | |
854 | HOWTO (R_PPC64_REL64, /* type */ | |
855 | 0, /* rightshift */ | |
856 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
857 | 64, /* bitsize */ | |
b34976b6 | 858 | TRUE, /* pc_relative */ |
5bd4f169 AM |
859 | 0, /* bitpos */ |
860 | complain_overflow_dont, /* complain_on_overflow */ | |
861 | bfd_elf_generic_reloc, /* special_function */ | |
862 | "R_PPC64_REL64", /* name */ | |
b34976b6 | 863 | FALSE, /* partial_inplace */ |
5bd4f169 | 864 | 0, /* src_mask */ |
f5e87a1d | 865 | ONES (64), /* dst_mask */ |
b34976b6 | 866 | TRUE), /* pcrel_offset */ |
5bd4f169 | 867 | |
cedb70c5 | 868 | /* 64-bit relocation to the symbol's procedure linkage table. */ |
5bd4f169 AM |
869 | HOWTO (R_PPC64_PLT64, /* type */ |
870 | 0, /* rightshift */ | |
871 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
872 | 64, /* bitsize */ | |
b34976b6 | 873 | FALSE, /* pc_relative */ |
5bd4f169 AM |
874 | 0, /* bitpos */ |
875 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 876 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 877 | "R_PPC64_PLT64", /* name */ |
b34976b6 | 878 | FALSE, /* partial_inplace */ |
5bd4f169 | 879 | 0, /* src_mask */ |
f5e87a1d | 880 | ONES (64), /* dst_mask */ |
b34976b6 | 881 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
882 | |
883 | /* 64-bit PC relative relocation to the symbol's procedure linkage | |
884 | table. */ | |
885 | /* FIXME: R_PPC64_PLTREL64 not supported. */ | |
886 | HOWTO (R_PPC64_PLTREL64, /* type */ | |
887 | 0, /* rightshift */ | |
888 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
889 | 64, /* bitsize */ | |
b34976b6 | 890 | TRUE, /* pc_relative */ |
5bd4f169 AM |
891 | 0, /* bitpos */ |
892 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 893 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 894 | "R_PPC64_PLTREL64", /* name */ |
b34976b6 | 895 | FALSE, /* partial_inplace */ |
5bd4f169 | 896 | 0, /* src_mask */ |
f5e87a1d | 897 | ONES (64), /* dst_mask */ |
b34976b6 | 898 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
899 | |
900 | /* 16 bit TOC-relative relocation. */ | |
901 | ||
902 | /* R_PPC64_TOC16 47 half16* S + A - .TOC. */ | |
903 | HOWTO (R_PPC64_TOC16, /* type */ | |
904 | 0, /* rightshift */ | |
905 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
906 | 16, /* bitsize */ | |
b34976b6 | 907 | FALSE, /* pc_relative */ |
5bd4f169 AM |
908 | 0, /* bitpos */ |
909 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 910 | ppc64_elf_toc_reloc, /* special_function */ |
5bd4f169 | 911 | "R_PPC64_TOC16", /* name */ |
b34976b6 | 912 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
913 | 0, /* src_mask */ |
914 | 0xffff, /* dst_mask */ | |
b34976b6 | 915 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
916 | |
917 | /* 16 bit TOC-relative relocation without overflow. */ | |
918 | ||
919 | /* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */ | |
920 | HOWTO (R_PPC64_TOC16_LO, /* type */ | |
921 | 0, /* rightshift */ | |
922 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
923 | 16, /* bitsize */ | |
b34976b6 | 924 | FALSE, /* pc_relative */ |
5bd4f169 AM |
925 | 0, /* bitpos */ |
926 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 927 | ppc64_elf_toc_reloc, /* special_function */ |
5bd4f169 | 928 | "R_PPC64_TOC16_LO", /* name */ |
b34976b6 | 929 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
930 | 0, /* src_mask */ |
931 | 0xffff, /* dst_mask */ | |
b34976b6 | 932 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
933 | |
934 | /* 16 bit TOC-relative relocation, high 16 bits. */ | |
935 | ||
936 | /* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */ | |
937 | HOWTO (R_PPC64_TOC16_HI, /* type */ | |
938 | 16, /* rightshift */ | |
939 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
940 | 16, /* bitsize */ | |
b34976b6 | 941 | FALSE, /* pc_relative */ |
5bd4f169 AM |
942 | 0, /* bitpos */ |
943 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 944 | ppc64_elf_toc_reloc, /* special_function */ |
5bd4f169 | 945 | "R_PPC64_TOC16_HI", /* name */ |
b34976b6 | 946 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
947 | 0, /* src_mask */ |
948 | 0xffff, /* dst_mask */ | |
b34976b6 | 949 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
950 | |
951 | /* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the | |
952 | contents of the low 16 bits, treated as a signed number, is | |
953 | negative. */ | |
954 | ||
955 | /* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */ | |
956 | HOWTO (R_PPC64_TOC16_HA, /* type */ | |
957 | 16, /* rightshift */ | |
958 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
959 | 16, /* bitsize */ | |
b34976b6 | 960 | FALSE, /* pc_relative */ |
5bd4f169 AM |
961 | 0, /* bitpos */ |
962 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 963 | ppc64_elf_toc_ha_reloc, /* special_function */ |
5bd4f169 | 964 | "R_PPC64_TOC16_HA", /* name */ |
b34976b6 | 965 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
966 | 0, /* src_mask */ |
967 | 0xffff, /* dst_mask */ | |
b34976b6 | 968 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
969 | |
970 | /* 64-bit relocation; insert value of TOC base (.TOC.). */ | |
971 | ||
972 | /* R_PPC64_TOC 51 doubleword64 .TOC. */ | |
973 | HOWTO (R_PPC64_TOC, /* type */ | |
974 | 0, /* rightshift */ | |
975 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
976 | 64, /* bitsize */ | |
b34976b6 | 977 | FALSE, /* pc_relative */ |
5bd4f169 AM |
978 | 0, /* bitpos */ |
979 | complain_overflow_bitfield, /* complain_on_overflow */ | |
805fc799 | 980 | ppc64_elf_toc64_reloc, /* special_function */ |
5bd4f169 | 981 | "R_PPC64_TOC", /* name */ |
b34976b6 | 982 | FALSE, /* partial_inplace */ |
5bd4f169 | 983 | 0, /* src_mask */ |
f5e87a1d | 984 | ONES (64), /* dst_mask */ |
b34976b6 | 985 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
986 | |
987 | /* Like R_PPC64_GOT16, but also informs the link editor that the | |
988 | value to relocate may (!) refer to a PLT entry which the link | |
989 | editor (a) may replace with the symbol value. If the link editor | |
990 | is unable to fully resolve the symbol, it may (b) create a PLT | |
991 | entry and store the address to the new PLT entry in the GOT. | |
992 | This permits lazy resolution of function symbols at run time. | |
993 | The link editor may also skip all of this and just (c) emit a | |
994 | R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */ | |
995 | /* FIXME: R_PPC64_PLTGOT16 not implemented. */ | |
996 | HOWTO (R_PPC64_PLTGOT16, /* type */ | |
997 | 0, /* rightshift */ | |
998 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
999 | 16, /* bitsize */ | |
b34976b6 | 1000 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1001 | 0, /* bitpos */ |
1002 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 1003 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb AM |
1004 | "R_PPC64_PLTGOT16", /* name */ |
1005 | FALSE, /* partial_inplace */ | |
1006 | 0, /* src_mask */ | |
1007 | 0xffff, /* dst_mask */ | |
1008 | FALSE), /* pcrel_offset */ | |
1009 | ||
1010 | /* Like R_PPC64_PLTGOT16, but without overflow. */ | |
1011 | /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */ | |
1012 | HOWTO (R_PPC64_PLTGOT16_LO, /* type */ | |
1013 | 0, /* rightshift */ | |
1014 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1015 | 16, /* bitsize */ | |
1016 | FALSE, /* pc_relative */ | |
1017 | 0, /* bitpos */ | |
1018 | complain_overflow_dont, /* complain_on_overflow */ | |
1019 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1020 | "R_PPC64_PLTGOT16_LO", /* name */ | |
1021 | FALSE, /* partial_inplace */ | |
1022 | 0, /* src_mask */ | |
1023 | 0xffff, /* dst_mask */ | |
1024 | FALSE), /* pcrel_offset */ | |
1025 | ||
1026 | /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */ | |
1027 | /* FIXME: R_PPC64_PLTGOT16_HI not implemented. */ | |
1028 | HOWTO (R_PPC64_PLTGOT16_HI, /* type */ | |
1029 | 16, /* rightshift */ | |
1030 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1031 | 16, /* bitsize */ | |
1032 | FALSE, /* pc_relative */ | |
1033 | 0, /* bitpos */ | |
1034 | complain_overflow_dont, /* complain_on_overflow */ | |
1035 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1036 | "R_PPC64_PLTGOT16_HI", /* name */ | |
1037 | FALSE, /* partial_inplace */ | |
1038 | 0, /* src_mask */ | |
1039 | 0xffff, /* dst_mask */ | |
1040 | FALSE), /* pcrel_offset */ | |
1041 | ||
1042 | /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus | |
1043 | 1 if the contents of the low 16 bits, treated as a signed number, | |
1044 | is negative. */ | |
1045 | /* FIXME: R_PPC64_PLTGOT16_HA not implemented. */ | |
1046 | HOWTO (R_PPC64_PLTGOT16_HA, /* type */ | |
1047 | 16, /* rightshift */ | |
1048 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1049 | 16, /* bitsize */ | |
1050 | FALSE, /* pc_relative */ | |
1051 | 0, /* bitpos */ | |
1052 | complain_overflow_dont,/* complain_on_overflow */ | |
1053 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1054 | "R_PPC64_PLTGOT16_HA", /* name */ | |
1055 | FALSE, /* partial_inplace */ | |
1056 | 0, /* src_mask */ | |
1057 | 0xffff, /* dst_mask */ | |
1058 | FALSE), /* pcrel_offset */ | |
1059 | ||
1060 | /* Like R_PPC64_ADDR16, but for instructions with a DS field. */ | |
1061 | HOWTO (R_PPC64_ADDR16_DS, /* type */ | |
1062 | 0, /* rightshift */ | |
1063 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1064 | 16, /* bitsize */ | |
1065 | FALSE, /* pc_relative */ | |
1066 | 0, /* bitpos */ | |
1067 | complain_overflow_bitfield, /* complain_on_overflow */ | |
1068 | bfd_elf_generic_reloc, /* special_function */ | |
1069 | "R_PPC64_ADDR16_DS", /* name */ | |
1070 | FALSE, /* partial_inplace */ | |
1071 | 0, /* src_mask */ | |
1072 | 0xfffc, /* dst_mask */ | |
1073 | FALSE), /* pcrel_offset */ | |
1074 | ||
1075 | /* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */ | |
1076 | HOWTO (R_PPC64_ADDR16_LO_DS, /* type */ | |
1077 | 0, /* rightshift */ | |
1078 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1079 | 16, /* bitsize */ | |
1080 | FALSE, /* pc_relative */ | |
1081 | 0, /* bitpos */ | |
1082 | complain_overflow_dont,/* complain_on_overflow */ | |
1083 | bfd_elf_generic_reloc, /* special_function */ | |
1084 | "R_PPC64_ADDR16_LO_DS",/* name */ | |
1085 | FALSE, /* partial_inplace */ | |
1086 | 0, /* src_mask */ | |
1087 | 0xfffc, /* dst_mask */ | |
1088 | FALSE), /* pcrel_offset */ | |
1089 | ||
1090 | /* Like R_PPC64_GOT16, but for instructions with a DS field. */ | |
1091 | HOWTO (R_PPC64_GOT16_DS, /* type */ | |
1092 | 0, /* rightshift */ | |
1093 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1094 | 16, /* bitsize */ | |
1095 | FALSE, /* pc_relative */ | |
1096 | 0, /* bitpos */ | |
1097 | complain_overflow_signed, /* complain_on_overflow */ | |
1098 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1099 | "R_PPC64_GOT16_DS", /* name */ | |
1100 | FALSE, /* partial_inplace */ | |
1101 | 0, /* src_mask */ | |
1102 | 0xfffc, /* dst_mask */ | |
1103 | FALSE), /* pcrel_offset */ | |
1104 | ||
1105 | /* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */ | |
1106 | HOWTO (R_PPC64_GOT16_LO_DS, /* type */ | |
1107 | 0, /* rightshift */ | |
1108 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1109 | 16, /* bitsize */ | |
1110 | FALSE, /* pc_relative */ | |
1111 | 0, /* bitpos */ | |
1112 | complain_overflow_dont, /* complain_on_overflow */ | |
1113 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1114 | "R_PPC64_GOT16_LO_DS", /* name */ | |
1115 | FALSE, /* partial_inplace */ | |
1116 | 0, /* src_mask */ | |
1117 | 0xfffc, /* dst_mask */ | |
1118 | FALSE), /* pcrel_offset */ | |
1119 | ||
1120 | /* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */ | |
1121 | HOWTO (R_PPC64_PLT16_LO_DS, /* type */ | |
1122 | 0, /* rightshift */ | |
1123 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1124 | 16, /* bitsize */ | |
1125 | FALSE, /* pc_relative */ | |
1126 | 0, /* bitpos */ | |
1127 | complain_overflow_dont, /* complain_on_overflow */ | |
1128 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1129 | "R_PPC64_PLT16_LO_DS", /* name */ | |
1130 | FALSE, /* partial_inplace */ | |
1131 | 0, /* src_mask */ | |
1132 | 0xfffc, /* dst_mask */ | |
1133 | FALSE), /* pcrel_offset */ | |
1134 | ||
1135 | /* Like R_PPC64_SECTOFF, but for instructions with a DS field. */ | |
1136 | HOWTO (R_PPC64_SECTOFF_DS, /* type */ | |
1137 | 0, /* rightshift */ | |
1138 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1139 | 16, /* bitsize */ | |
1140 | FALSE, /* pc_relative */ | |
1141 | 0, /* bitpos */ | |
1142 | complain_overflow_bitfield, /* complain_on_overflow */ | |
1143 | ppc64_elf_sectoff_reloc, /* special_function */ | |
1144 | "R_PPC64_SECTOFF_DS", /* name */ | |
1145 | FALSE, /* partial_inplace */ | |
1146 | 0, /* src_mask */ | |
1147 | 0xfffc, /* dst_mask */ | |
1148 | FALSE), /* pcrel_offset */ | |
1149 | ||
1150 | /* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */ | |
1151 | HOWTO (R_PPC64_SECTOFF_LO_DS, /* type */ | |
1152 | 0, /* rightshift */ | |
1153 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1154 | 16, /* bitsize */ | |
1155 | FALSE, /* pc_relative */ | |
1156 | 0, /* bitpos */ | |
1157 | complain_overflow_dont, /* complain_on_overflow */ | |
1158 | ppc64_elf_sectoff_reloc, /* special_function */ | |
1159 | "R_PPC64_SECTOFF_LO_DS",/* name */ | |
1160 | FALSE, /* partial_inplace */ | |
1161 | 0, /* src_mask */ | |
1162 | 0xfffc, /* dst_mask */ | |
1163 | FALSE), /* pcrel_offset */ | |
1164 | ||
1165 | /* Like R_PPC64_TOC16, but for instructions with a DS field. */ | |
1166 | HOWTO (R_PPC64_TOC16_DS, /* type */ | |
1167 | 0, /* rightshift */ | |
1168 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1169 | 16, /* bitsize */ | |
1170 | FALSE, /* pc_relative */ | |
1171 | 0, /* bitpos */ | |
1172 | complain_overflow_signed, /* complain_on_overflow */ | |
1173 | ppc64_elf_toc_reloc, /* special_function */ | |
1174 | "R_PPC64_TOC16_DS", /* name */ | |
1175 | FALSE, /* partial_inplace */ | |
1176 | 0, /* src_mask */ | |
1177 | 0xfffc, /* dst_mask */ | |
1178 | FALSE), /* pcrel_offset */ | |
1179 | ||
1180 | /* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */ | |
1181 | HOWTO (R_PPC64_TOC16_LO_DS, /* type */ | |
1182 | 0, /* rightshift */ | |
1183 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1184 | 16, /* bitsize */ | |
1185 | FALSE, /* pc_relative */ | |
1186 | 0, /* bitpos */ | |
1187 | complain_overflow_dont, /* complain_on_overflow */ | |
1188 | ppc64_elf_toc_reloc, /* special_function */ | |
1189 | "R_PPC64_TOC16_LO_DS", /* name */ | |
1190 | FALSE, /* partial_inplace */ | |
1191 | 0, /* src_mask */ | |
1192 | 0xfffc, /* dst_mask */ | |
1193 | FALSE), /* pcrel_offset */ | |
1194 | ||
1195 | /* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */ | |
1196 | /* FIXME: R_PPC64_PLTGOT16_DS not implemented. */ | |
1197 | HOWTO (R_PPC64_PLTGOT16_DS, /* type */ | |
1198 | 0, /* rightshift */ | |
1199 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1200 | 16, /* bitsize */ | |
1201 | FALSE, /* pc_relative */ | |
1202 | 0, /* bitpos */ | |
1203 | complain_overflow_signed, /* complain_on_overflow */ | |
1204 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1205 | "R_PPC64_PLTGOT16_DS", /* name */ | |
1206 | FALSE, /* partial_inplace */ | |
1207 | 0, /* src_mask */ | |
1208 | 0xfffc, /* dst_mask */ | |
1209 | FALSE), /* pcrel_offset */ | |
1210 | ||
1211 | /* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */ | |
1212 | /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */ | |
1213 | HOWTO (R_PPC64_PLTGOT16_LO_DS,/* type */ | |
1214 | 0, /* rightshift */ | |
1215 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1216 | 16, /* bitsize */ | |
1217 | FALSE, /* pc_relative */ | |
1218 | 0, /* bitpos */ | |
1219 | complain_overflow_dont, /* complain_on_overflow */ | |
1220 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1221 | "R_PPC64_PLTGOT16_LO_DS",/* name */ | |
1222 | FALSE, /* partial_inplace */ | |
1223 | 0, /* src_mask */ | |
1224 | 0xfffc, /* dst_mask */ | |
1225 | FALSE), /* pcrel_offset */ | |
1226 | ||
1227 | /* Marker reloc for TLS. */ | |
1228 | HOWTO (R_PPC64_TLS, | |
1229 | 0, /* rightshift */ | |
1230 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1231 | 32, /* bitsize */ | |
1232 | FALSE, /* pc_relative */ | |
1233 | 0, /* bitpos */ | |
1234 | complain_overflow_dont, /* complain_on_overflow */ | |
1235 | bfd_elf_generic_reloc, /* special_function */ | |
1236 | "R_PPC64_TLS", /* name */ | |
1237 | FALSE, /* partial_inplace */ | |
1238 | 0, /* src_mask */ | |
1239 | 0, /* dst_mask */ | |
1240 | FALSE), /* pcrel_offset */ | |
1241 | ||
1242 | /* Computes the load module index of the load module that contains the | |
1243 | definition of its TLS sym. */ | |
1244 | HOWTO (R_PPC64_DTPMOD64, | |
1245 | 0, /* rightshift */ | |
1246 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
1247 | 64, /* bitsize */ | |
1248 | FALSE, /* pc_relative */ | |
1249 | 0, /* bitpos */ | |
1250 | complain_overflow_dont, /* complain_on_overflow */ | |
1251 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1252 | "R_PPC64_DTPMOD64", /* name */ | |
1253 | FALSE, /* partial_inplace */ | |
1254 | 0, /* src_mask */ | |
1255 | ONES (64), /* dst_mask */ | |
1256 | FALSE), /* pcrel_offset */ | |
1257 | ||
1258 | /* Computes a dtv-relative displacement, the difference between the value | |
1259 | of sym+add and the base address of the thread-local storage block that | |
1260 | contains the definition of sym, minus 0x8000. */ | |
1261 | HOWTO (R_PPC64_DTPREL64, | |
1262 | 0, /* rightshift */ | |
1263 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
1264 | 64, /* bitsize */ | |
1265 | FALSE, /* pc_relative */ | |
1266 | 0, /* bitpos */ | |
1267 | complain_overflow_dont, /* complain_on_overflow */ | |
1268 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1269 | "R_PPC64_DTPREL64", /* name */ | |
1270 | FALSE, /* partial_inplace */ | |
1271 | 0, /* src_mask */ | |
1272 | ONES (64), /* dst_mask */ | |
1273 | FALSE), /* pcrel_offset */ | |
1274 | ||
1275 | /* A 16 bit dtprel reloc. */ | |
1276 | HOWTO (R_PPC64_DTPREL16, | |
1277 | 0, /* rightshift */ | |
1278 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1279 | 16, /* bitsize */ | |
1280 | FALSE, /* pc_relative */ | |
1281 | 0, /* bitpos */ | |
1282 | complain_overflow_signed, /* complain_on_overflow */ | |
1283 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1284 | "R_PPC64_DTPREL16", /* name */ | |
1285 | FALSE, /* partial_inplace */ | |
1286 | 0, /* src_mask */ | |
1287 | 0xffff, /* dst_mask */ | |
1288 | FALSE), /* pcrel_offset */ | |
1289 | ||
1290 | /* Like DTPREL16, but no overflow. */ | |
1291 | HOWTO (R_PPC64_DTPREL16_LO, | |
1292 | 0, /* rightshift */ | |
1293 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1294 | 16, /* bitsize */ | |
1295 | FALSE, /* pc_relative */ | |
1296 | 0, /* bitpos */ | |
1297 | complain_overflow_dont, /* complain_on_overflow */ | |
1298 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1299 | "R_PPC64_DTPREL16_LO", /* name */ | |
1300 | FALSE, /* partial_inplace */ | |
1301 | 0, /* src_mask */ | |
1302 | 0xffff, /* dst_mask */ | |
1303 | FALSE), /* pcrel_offset */ | |
1304 | ||
1305 | /* Like DTPREL16_LO, but next higher group of 16 bits. */ | |
1306 | HOWTO (R_PPC64_DTPREL16_HI, | |
1307 | 16, /* rightshift */ | |
1308 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1309 | 16, /* bitsize */ | |
1310 | FALSE, /* pc_relative */ | |
1311 | 0, /* bitpos */ | |
1312 | complain_overflow_dont, /* complain_on_overflow */ | |
1313 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1314 | "R_PPC64_DTPREL16_HI", /* name */ | |
1315 | FALSE, /* partial_inplace */ | |
1316 | 0, /* src_mask */ | |
1317 | 0xffff, /* dst_mask */ | |
1318 | FALSE), /* pcrel_offset */ | |
1319 | ||
1320 | /* Like DTPREL16_HI, but adjust for low 16 bits. */ | |
1321 | HOWTO (R_PPC64_DTPREL16_HA, | |
1322 | 16, /* rightshift */ | |
1323 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1324 | 16, /* bitsize */ | |
1325 | FALSE, /* pc_relative */ | |
1326 | 0, /* bitpos */ | |
1327 | complain_overflow_dont, /* complain_on_overflow */ | |
1328 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1329 | "R_PPC64_DTPREL16_HA", /* name */ | |
1330 | FALSE, /* partial_inplace */ | |
1331 | 0, /* src_mask */ | |
1332 | 0xffff, /* dst_mask */ | |
1333 | FALSE), /* pcrel_offset */ | |
1334 | ||
1335 | /* Like DTPREL16_HI, but next higher group of 16 bits. */ | |
1336 | HOWTO (R_PPC64_DTPREL16_HIGHER, | |
1337 | 32, /* rightshift */ | |
1338 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1339 | 16, /* bitsize */ | |
1340 | FALSE, /* pc_relative */ | |
1341 | 0, /* bitpos */ | |
1342 | complain_overflow_dont, /* complain_on_overflow */ | |
1343 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1344 | "R_PPC64_DTPREL16_HIGHER", /* name */ | |
1345 | FALSE, /* partial_inplace */ | |
1346 | 0, /* src_mask */ | |
1347 | 0xffff, /* dst_mask */ | |
1348 | FALSE), /* pcrel_offset */ | |
1349 | ||
1350 | /* Like DTPREL16_HIGHER, but adjust for low 16 bits. */ | |
1351 | HOWTO (R_PPC64_DTPREL16_HIGHERA, | |
1352 | 32, /* rightshift */ | |
1353 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1354 | 16, /* bitsize */ | |
1355 | FALSE, /* pc_relative */ | |
1356 | 0, /* bitpos */ | |
1357 | complain_overflow_dont, /* complain_on_overflow */ | |
1358 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1359 | "R_PPC64_DTPREL16_HIGHERA", /* name */ | |
1360 | FALSE, /* partial_inplace */ | |
1361 | 0, /* src_mask */ | |
1362 | 0xffff, /* dst_mask */ | |
1363 | FALSE), /* pcrel_offset */ | |
1364 | ||
1365 | /* Like DTPREL16_HIGHER, but next higher group of 16 bits. */ | |
1366 | HOWTO (R_PPC64_DTPREL16_HIGHEST, | |
1367 | 48, /* rightshift */ | |
1368 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1369 | 16, /* bitsize */ | |
1370 | FALSE, /* pc_relative */ | |
1371 | 0, /* bitpos */ | |
1372 | complain_overflow_dont, /* complain_on_overflow */ | |
1373 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1374 | "R_PPC64_DTPREL16_HIGHEST", /* name */ | |
1375 | FALSE, /* partial_inplace */ | |
1376 | 0, /* src_mask */ | |
1377 | 0xffff, /* dst_mask */ | |
1378 | FALSE), /* pcrel_offset */ | |
1379 | ||
1380 | /* Like DTPREL16_HIGHEST, but adjust for low 16 bits. */ | |
1381 | HOWTO (R_PPC64_DTPREL16_HIGHESTA, | |
1382 | 48, /* rightshift */ | |
1383 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1384 | 16, /* bitsize */ | |
1385 | FALSE, /* pc_relative */ | |
1386 | 0, /* bitpos */ | |
1387 | complain_overflow_dont, /* complain_on_overflow */ | |
1388 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1389 | "R_PPC64_DTPREL16_HIGHESTA", /* name */ | |
1390 | FALSE, /* partial_inplace */ | |
1391 | 0, /* src_mask */ | |
1392 | 0xffff, /* dst_mask */ | |
1393 | FALSE), /* pcrel_offset */ | |
1394 | ||
1395 | /* Like DTPREL16, but for insns with a DS field. */ | |
1396 | HOWTO (R_PPC64_DTPREL16_DS, | |
1397 | 0, /* rightshift */ | |
1398 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1399 | 16, /* bitsize */ | |
1400 | FALSE, /* pc_relative */ | |
1401 | 0, /* bitpos */ | |
1402 | complain_overflow_signed, /* complain_on_overflow */ | |
1403 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1404 | "R_PPC64_DTPREL16_DS", /* name */ | |
1405 | FALSE, /* partial_inplace */ | |
1406 | 0, /* src_mask */ | |
1407 | 0xfffc, /* dst_mask */ | |
1408 | FALSE), /* pcrel_offset */ | |
1409 | ||
1410 | /* Like DTPREL16_DS, but no overflow. */ | |
1411 | HOWTO (R_PPC64_DTPREL16_LO_DS, | |
1412 | 0, /* rightshift */ | |
1413 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1414 | 16, /* bitsize */ | |
1415 | FALSE, /* pc_relative */ | |
1416 | 0, /* bitpos */ | |
1417 | complain_overflow_dont, /* complain_on_overflow */ | |
1418 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1419 | "R_PPC64_DTPREL16_LO_DS", /* name */ | |
1420 | FALSE, /* partial_inplace */ | |
1421 | 0, /* src_mask */ | |
1422 | 0xfffc, /* dst_mask */ | |
1423 | FALSE), /* pcrel_offset */ | |
1424 | ||
1425 | /* Computes a tp-relative displacement, the difference between the value of | |
1426 | sym+add and the value of the thread pointer (r13). */ | |
1427 | HOWTO (R_PPC64_TPREL64, | |
1428 | 0, /* rightshift */ | |
1429 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
1430 | 64, /* bitsize */ | |
1431 | FALSE, /* pc_relative */ | |
1432 | 0, /* bitpos */ | |
1433 | complain_overflow_dont, /* complain_on_overflow */ | |
1434 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1435 | "R_PPC64_TPREL64", /* name */ | |
1436 | FALSE, /* partial_inplace */ | |
1437 | 0, /* src_mask */ | |
1438 | ONES (64), /* dst_mask */ | |
1439 | FALSE), /* pcrel_offset */ | |
1440 | ||
1441 | /* A 16 bit tprel reloc. */ | |
1442 | HOWTO (R_PPC64_TPREL16, | |
1443 | 0, /* rightshift */ | |
1444 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1445 | 16, /* bitsize */ | |
1446 | FALSE, /* pc_relative */ | |
1447 | 0, /* bitpos */ | |
1448 | complain_overflow_signed, /* complain_on_overflow */ | |
1449 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1450 | "R_PPC64_TPREL16", /* name */ | |
1451 | FALSE, /* partial_inplace */ | |
1452 | 0, /* src_mask */ | |
1453 | 0xffff, /* dst_mask */ | |
1454 | FALSE), /* pcrel_offset */ | |
1455 | ||
1456 | /* Like TPREL16, but no overflow. */ | |
1457 | HOWTO (R_PPC64_TPREL16_LO, | |
1458 | 0, /* rightshift */ | |
1459 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1460 | 16, /* bitsize */ | |
1461 | FALSE, /* pc_relative */ | |
1462 | 0, /* bitpos */ | |
1463 | complain_overflow_dont, /* complain_on_overflow */ | |
1464 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1465 | "R_PPC64_TPREL16_LO", /* name */ | |
1466 | FALSE, /* partial_inplace */ | |
1467 | 0, /* src_mask */ | |
1468 | 0xffff, /* dst_mask */ | |
1469 | FALSE), /* pcrel_offset */ | |
1470 | ||
1471 | /* Like TPREL16_LO, but next higher group of 16 bits. */ | |
1472 | HOWTO (R_PPC64_TPREL16_HI, | |
1473 | 16, /* rightshift */ | |
1474 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1475 | 16, /* bitsize */ | |
1476 | FALSE, /* pc_relative */ | |
1477 | 0, /* bitpos */ | |
1478 | complain_overflow_dont, /* complain_on_overflow */ | |
1479 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1480 | "R_PPC64_TPREL16_HI", /* name */ | |
1481 | FALSE, /* partial_inplace */ | |
1482 | 0, /* src_mask */ | |
1483 | 0xffff, /* dst_mask */ | |
1484 | FALSE), /* pcrel_offset */ | |
1485 | ||
1486 | /* Like TPREL16_HI, but adjust for low 16 bits. */ | |
1487 | HOWTO (R_PPC64_TPREL16_HA, | |
1488 | 16, /* rightshift */ | |
1489 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1490 | 16, /* bitsize */ | |
1491 | FALSE, /* pc_relative */ | |
1492 | 0, /* bitpos */ | |
1493 | complain_overflow_dont, /* complain_on_overflow */ | |
1494 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1495 | "R_PPC64_TPREL16_HA", /* name */ | |
1496 | FALSE, /* partial_inplace */ | |
1497 | 0, /* src_mask */ | |
1498 | 0xffff, /* dst_mask */ | |
1499 | FALSE), /* pcrel_offset */ | |
1500 | ||
1501 | /* Like TPREL16_HI, but next higher group of 16 bits. */ | |
1502 | HOWTO (R_PPC64_TPREL16_HIGHER, | |
1503 | 32, /* rightshift */ | |
1504 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1505 | 16, /* bitsize */ | |
1506 | FALSE, /* pc_relative */ | |
1507 | 0, /* bitpos */ | |
1508 | complain_overflow_dont, /* complain_on_overflow */ | |
1509 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1510 | "R_PPC64_TPREL16_HIGHER", /* name */ | |
1511 | FALSE, /* partial_inplace */ | |
1512 | 0, /* src_mask */ | |
1513 | 0xffff, /* dst_mask */ | |
1514 | FALSE), /* pcrel_offset */ | |
1515 | ||
1516 | /* Like TPREL16_HIGHER, but adjust for low 16 bits. */ | |
1517 | HOWTO (R_PPC64_TPREL16_HIGHERA, | |
1518 | 32, /* rightshift */ | |
1519 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1520 | 16, /* bitsize */ | |
1521 | FALSE, /* pc_relative */ | |
1522 | 0, /* bitpos */ | |
1523 | complain_overflow_dont, /* complain_on_overflow */ | |
1524 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1525 | "R_PPC64_TPREL16_HIGHERA", /* name */ | |
1526 | FALSE, /* partial_inplace */ | |
1527 | 0, /* src_mask */ | |
1528 | 0xffff, /* dst_mask */ | |
1529 | FALSE), /* pcrel_offset */ | |
1530 | ||
1531 | /* Like TPREL16_HIGHER, but next higher group of 16 bits. */ | |
1532 | HOWTO (R_PPC64_TPREL16_HIGHEST, | |
1533 | 48, /* rightshift */ | |
1534 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1535 | 16, /* bitsize */ | |
1536 | FALSE, /* pc_relative */ | |
1537 | 0, /* bitpos */ | |
1538 | complain_overflow_dont, /* complain_on_overflow */ | |
1539 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1540 | "R_PPC64_TPREL16_HIGHEST", /* name */ | |
1541 | FALSE, /* partial_inplace */ | |
1542 | 0, /* src_mask */ | |
1543 | 0xffff, /* dst_mask */ | |
1544 | FALSE), /* pcrel_offset */ | |
1545 | ||
1546 | /* Like TPREL16_HIGHEST, but adjust for low 16 bits. */ | |
1547 | HOWTO (R_PPC64_TPREL16_HIGHESTA, | |
1548 | 48, /* rightshift */ | |
1549 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1550 | 16, /* bitsize */ | |
1551 | FALSE, /* pc_relative */ | |
1552 | 0, /* bitpos */ | |
1553 | complain_overflow_dont, /* complain_on_overflow */ | |
1554 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1555 | "R_PPC64_TPREL16_HIGHESTA", /* name */ | |
1556 | FALSE, /* partial_inplace */ | |
1557 | 0, /* src_mask */ | |
1558 | 0xffff, /* dst_mask */ | |
1559 | FALSE), /* pcrel_offset */ | |
1560 | ||
1561 | /* Like TPREL16, but for insns with a DS field. */ | |
1562 | HOWTO (R_PPC64_TPREL16_DS, | |
1563 | 0, /* rightshift */ | |
1564 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1565 | 16, /* bitsize */ | |
1566 | FALSE, /* pc_relative */ | |
1567 | 0, /* bitpos */ | |
1568 | complain_overflow_signed, /* complain_on_overflow */ | |
1569 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1570 | "R_PPC64_TPREL16_DS", /* name */ | |
1571 | FALSE, /* partial_inplace */ | |
1572 | 0, /* src_mask */ | |
1573 | 0xfffc, /* dst_mask */ | |
1574 | FALSE), /* pcrel_offset */ | |
1575 | ||
1576 | /* Like TPREL16_DS, but no overflow. */ | |
1577 | HOWTO (R_PPC64_TPREL16_LO_DS, | |
1578 | 0, /* rightshift */ | |
1579 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1580 | 16, /* bitsize */ | |
1581 | FALSE, /* pc_relative */ | |
1582 | 0, /* bitpos */ | |
1583 | complain_overflow_dont, /* complain_on_overflow */ | |
1584 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1585 | "R_PPC64_TPREL16_LO_DS", /* name */ | |
1586 | FALSE, /* partial_inplace */ | |
1587 | 0, /* src_mask */ | |
1588 | 0xfffc, /* dst_mask */ | |
1589 | FALSE), /* pcrel_offset */ | |
1590 | ||
1591 | /* Allocates two contiguous entries in the GOT to hold a tls_index structure, | |
1592 | with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset | |
1593 | to the first entry relative to the TOC base (r2). */ | |
1594 | HOWTO (R_PPC64_GOT_TLSGD16, | |
1595 | 0, /* rightshift */ | |
1596 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1597 | 16, /* bitsize */ | |
1598 | FALSE, /* pc_relative */ | |
1599 | 0, /* bitpos */ | |
1600 | complain_overflow_signed, /* complain_on_overflow */ | |
1601 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1602 | "R_PPC64_GOT_TLSGD16", /* name */ | |
b34976b6 | 1603 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1604 | 0, /* src_mask */ |
1605 | 0xffff, /* dst_mask */ | |
b34976b6 | 1606 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1607 | |
411e1bfb AM |
1608 | /* Like GOT_TLSGD16, but no overflow. */ |
1609 | HOWTO (R_PPC64_GOT_TLSGD16_LO, | |
5bd4f169 AM |
1610 | 0, /* rightshift */ |
1611 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1612 | 16, /* bitsize */ | |
b34976b6 | 1613 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1614 | 0, /* bitpos */ |
1615 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 1616 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1617 | "R_PPC64_GOT_TLSGD16_LO", /* name */ |
b34976b6 | 1618 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1619 | 0, /* src_mask */ |
1620 | 0xffff, /* dst_mask */ | |
b34976b6 | 1621 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1622 | |
411e1bfb AM |
1623 | /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */ |
1624 | HOWTO (R_PPC64_GOT_TLSGD16_HI, | |
5bd4f169 AM |
1625 | 16, /* rightshift */ |
1626 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1627 | 16, /* bitsize */ | |
b34976b6 | 1628 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1629 | 0, /* bitpos */ |
1630 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 1631 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1632 | "R_PPC64_GOT_TLSGD16_HI", /* name */ |
b34976b6 | 1633 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1634 | 0, /* src_mask */ |
1635 | 0xffff, /* dst_mask */ | |
b34976b6 | 1636 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1637 | |
411e1bfb AM |
1638 | /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */ |
1639 | HOWTO (R_PPC64_GOT_TLSGD16_HA, | |
5bd4f169 AM |
1640 | 16, /* rightshift */ |
1641 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1642 | 16, /* bitsize */ | |
b34976b6 | 1643 | FALSE, /* pc_relative */ |
5bd4f169 | 1644 | 0, /* bitpos */ |
411e1bfb | 1645 | complain_overflow_dont, /* complain_on_overflow */ |
805fc799 | 1646 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1647 | "R_PPC64_GOT_TLSGD16_HA", /* name */ |
b34976b6 | 1648 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1649 | 0, /* src_mask */ |
1650 | 0xffff, /* dst_mask */ | |
b34976b6 | 1651 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1652 | |
411e1bfb AM |
1653 | /* Allocates two contiguous entries in the GOT to hold a tls_index structure, |
1654 | with values (sym+add)@dtpmod and zero, and computes the offset to the | |
1655 | first entry relative to the TOC base (r2). */ | |
1656 | HOWTO (R_PPC64_GOT_TLSLD16, | |
5bd4f169 AM |
1657 | 0, /* rightshift */ |
1658 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1659 | 16, /* bitsize */ | |
b34976b6 | 1660 | FALSE, /* pc_relative */ |
5bd4f169 | 1661 | 0, /* bitpos */ |
411e1bfb AM |
1662 | complain_overflow_signed, /* complain_on_overflow */ |
1663 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1664 | "R_PPC64_GOT_TLSLD16", /* name */ | |
b34976b6 | 1665 | FALSE, /* partial_inplace */ |
d006db6c | 1666 | 0, /* src_mask */ |
411e1bfb | 1667 | 0xffff, /* dst_mask */ |
b34976b6 | 1668 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1669 | |
411e1bfb AM |
1670 | /* Like GOT_TLSLD16, but no overflow. */ |
1671 | HOWTO (R_PPC64_GOT_TLSLD16_LO, | |
5bd4f169 AM |
1672 | 0, /* rightshift */ |
1673 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1674 | 16, /* bitsize */ | |
b34976b6 | 1675 | FALSE, /* pc_relative */ |
5bd4f169 | 1676 | 0, /* bitpos */ |
411e1bfb AM |
1677 | complain_overflow_dont, /* complain_on_overflow */ |
1678 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1679 | "R_PPC64_GOT_TLSLD16_LO", /* name */ | |
b34976b6 | 1680 | FALSE, /* partial_inplace */ |
d006db6c | 1681 | 0, /* src_mask */ |
411e1bfb | 1682 | 0xffff, /* dst_mask */ |
b34976b6 | 1683 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1684 | |
411e1bfb AM |
1685 | /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */ |
1686 | HOWTO (R_PPC64_GOT_TLSLD16_HI, | |
1687 | 16, /* rightshift */ | |
5bd4f169 AM |
1688 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1689 | 16, /* bitsize */ | |
b34976b6 | 1690 | FALSE, /* pc_relative */ |
5bd4f169 | 1691 | 0, /* bitpos */ |
411e1bfb | 1692 | complain_overflow_dont, /* complain_on_overflow */ |
805fc799 | 1693 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1694 | "R_PPC64_GOT_TLSLD16_HI", /* name */ |
b34976b6 | 1695 | FALSE, /* partial_inplace */ |
d006db6c | 1696 | 0, /* src_mask */ |
411e1bfb | 1697 | 0xffff, /* dst_mask */ |
b34976b6 | 1698 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1699 | |
411e1bfb AM |
1700 | /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */ |
1701 | HOWTO (R_PPC64_GOT_TLSLD16_HA, | |
1702 | 16, /* rightshift */ | |
5bd4f169 AM |
1703 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1704 | 16, /* bitsize */ | |
b34976b6 | 1705 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1706 | 0, /* bitpos */ |
1707 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 1708 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1709 | "R_PPC64_GOT_TLSLD16_HA", /* name */ |
b34976b6 | 1710 | FALSE, /* partial_inplace */ |
d006db6c | 1711 | 0, /* src_mask */ |
411e1bfb | 1712 | 0xffff, /* dst_mask */ |
b34976b6 | 1713 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1714 | |
411e1bfb AM |
1715 | /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes |
1716 | the offset to the entry relative to the TOC base (r2). */ | |
1717 | HOWTO (R_PPC64_GOT_DTPREL16_DS, | |
5bd4f169 AM |
1718 | 0, /* rightshift */ |
1719 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1720 | 16, /* bitsize */ | |
b34976b6 | 1721 | FALSE, /* pc_relative */ |
5bd4f169 | 1722 | 0, /* bitpos */ |
411e1bfb | 1723 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 1724 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1725 | "R_PPC64_GOT_DTPREL16_DS", /* name */ |
b34976b6 | 1726 | FALSE, /* partial_inplace */ |
d006db6c | 1727 | 0, /* src_mask */ |
5bd4f169 | 1728 | 0xfffc, /* dst_mask */ |
b34976b6 | 1729 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1730 | |
411e1bfb AM |
1731 | /* Like GOT_DTPREL16_DS, but no overflow. */ |
1732 | HOWTO (R_PPC64_GOT_DTPREL16_LO_DS, | |
5bd4f169 | 1733 | 0, /* rightshift */ |
c061c2d8 AM |
1734 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1735 | 16, /* bitsize */ | |
b34976b6 | 1736 | FALSE, /* pc_relative */ |
5bd4f169 | 1737 | 0, /* bitpos */ |
411e1bfb AM |
1738 | complain_overflow_dont, /* complain_on_overflow */ |
1739 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1740 | "R_PPC64_GOT_DTPREL16_LO_DS", /* name */ | |
b34976b6 | 1741 | FALSE, /* partial_inplace */ |
d006db6c | 1742 | 0, /* src_mask */ |
c061c2d8 | 1743 | 0xfffc, /* dst_mask */ |
b34976b6 | 1744 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1745 | |
411e1bfb AM |
1746 | /* Like GOT_DTPREL16_LO_DS, but next higher group of 16 bits. */ |
1747 | HOWTO (R_PPC64_GOT_DTPREL16_HI, | |
1748 | 16, /* rightshift */ | |
5bd4f169 AM |
1749 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1750 | 16, /* bitsize */ | |
b34976b6 | 1751 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1752 | 0, /* bitpos */ |
1753 | complain_overflow_dont, /* complain_on_overflow */ | |
411e1bfb AM |
1754 | ppc64_elf_unhandled_reloc, /* special_function */ |
1755 | "R_PPC64_GOT_DTPREL16_HI", /* name */ | |
b34976b6 | 1756 | FALSE, /* partial_inplace */ |
d006db6c | 1757 | 0, /* src_mask */ |
411e1bfb | 1758 | 0xffff, /* dst_mask */ |
b34976b6 | 1759 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1760 | |
411e1bfb AM |
1761 | /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */ |
1762 | HOWTO (R_PPC64_GOT_DTPREL16_HA, | |
1763 | 16, /* rightshift */ | |
1764 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1765 | 16, /* bitsize */ | |
1766 | FALSE, /* pc_relative */ | |
1767 | 0, /* bitpos */ | |
1768 | complain_overflow_dont, /* complain_on_overflow */ | |
1769 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1770 | "R_PPC64_GOT_DTPREL16_HA", /* name */ | |
1771 | FALSE, /* partial_inplace */ | |
1772 | 0, /* src_mask */ | |
1773 | 0xffff, /* dst_mask */ | |
1774 | FALSE), /* pcrel_offset */ | |
1775 | ||
1776 | /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the | |
1777 | offset to the entry relative to the TOC base (r2). */ | |
1778 | HOWTO (R_PPC64_GOT_TPREL16_DS, | |
5bd4f169 AM |
1779 | 0, /* rightshift */ |
1780 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1781 | 16, /* bitsize */ | |
b34976b6 | 1782 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1783 | 0, /* bitpos */ |
1784 | complain_overflow_signed, /* complain_on_overflow */ | |
411e1bfb AM |
1785 | ppc64_elf_unhandled_reloc, /* special_function */ |
1786 | "R_PPC64_GOT_TPREL16_DS", /* name */ | |
b34976b6 | 1787 | FALSE, /* partial_inplace */ |
d006db6c | 1788 | 0, /* src_mask */ |
ad8e1ba5 | 1789 | 0xfffc, /* dst_mask */ |
b34976b6 | 1790 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1791 | |
411e1bfb AM |
1792 | /* Like GOT_TPREL16_DS, but no overflow. */ |
1793 | HOWTO (R_PPC64_GOT_TPREL16_LO_DS, | |
5bd4f169 AM |
1794 | 0, /* rightshift */ |
1795 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1796 | 16, /* bitsize */ | |
b34976b6 | 1797 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1798 | 0, /* bitpos */ |
1799 | complain_overflow_dont, /* complain_on_overflow */ | |
411e1bfb AM |
1800 | ppc64_elf_unhandled_reloc, /* special_function */ |
1801 | "R_PPC64_GOT_TPREL16_LO_DS", /* name */ | |
b34976b6 | 1802 | FALSE, /* partial_inplace */ |
d006db6c | 1803 | 0, /* src_mask */ |
ad8e1ba5 | 1804 | 0xfffc, /* dst_mask */ |
b34976b6 | 1805 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1806 | |
411e1bfb AM |
1807 | /* Like GOT_TPREL16_LO_DS, but next higher group of 16 bits. */ |
1808 | HOWTO (R_PPC64_GOT_TPREL16_HI, | |
1809 | 16, /* rightshift */ | |
5bd4f169 AM |
1810 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1811 | 16, /* bitsize */ | |
b34976b6 | 1812 | FALSE, /* pc_relative */ |
5bd4f169 | 1813 | 0, /* bitpos */ |
411e1bfb | 1814 | complain_overflow_dont, /* complain_on_overflow */ |
805fc799 | 1815 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1816 | "R_PPC64_GOT_TPREL16_HI", /* name */ |
b34976b6 | 1817 | FALSE, /* partial_inplace */ |
d006db6c | 1818 | 0, /* src_mask */ |
411e1bfb | 1819 | 0xffff, /* dst_mask */ |
b34976b6 | 1820 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1821 | |
411e1bfb AM |
1822 | /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */ |
1823 | HOWTO (R_PPC64_GOT_TPREL16_HA, | |
1824 | 16, /* rightshift */ | |
5bd4f169 AM |
1825 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1826 | 16, /* bitsize */ | |
b34976b6 | 1827 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1828 | 0, /* bitpos */ |
1829 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 1830 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1831 | "R_PPC64_GOT_TPREL16_HA", /* name */ |
b34976b6 | 1832 | FALSE, /* partial_inplace */ |
d006db6c | 1833 | 0, /* src_mask */ |
411e1bfb | 1834 | 0xffff, /* dst_mask */ |
b34976b6 | 1835 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
1836 | |
1837 | /* GNU extension to record C++ vtable hierarchy. */ | |
1838 | HOWTO (R_PPC64_GNU_VTINHERIT, /* type */ | |
1839 | 0, /* rightshift */ | |
1840 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
1841 | 0, /* bitsize */ | |
b34976b6 | 1842 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1843 | 0, /* bitpos */ |
1844 | complain_overflow_dont, /* complain_on_overflow */ | |
1845 | NULL, /* special_function */ | |
1846 | "R_PPC64_GNU_VTINHERIT", /* name */ | |
b34976b6 | 1847 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1848 | 0, /* src_mask */ |
1849 | 0, /* dst_mask */ | |
b34976b6 | 1850 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
1851 | |
1852 | /* GNU extension to record C++ vtable member usage. */ | |
1853 | HOWTO (R_PPC64_GNU_VTENTRY, /* type */ | |
1854 | 0, /* rightshift */ | |
1855 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
1856 | 0, /* bitsize */ | |
b34976b6 | 1857 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1858 | 0, /* bitpos */ |
1859 | complain_overflow_dont, /* complain_on_overflow */ | |
1860 | NULL, /* special_function */ | |
1861 | "R_PPC64_GNU_VTENTRY", /* name */ | |
b34976b6 | 1862 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1863 | 0, /* src_mask */ |
1864 | 0, /* dst_mask */ | |
b34976b6 | 1865 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
1866 | }; |
1867 | ||
1868 | \f | |
1869 | /* Initialize the ppc64_elf_howto_table, so that linear accesses can | |
1870 | be done. */ | |
1871 | ||
1872 | static void | |
4ce794b7 | 1873 | ppc_howto_init (void) |
5bd4f169 AM |
1874 | { |
1875 | unsigned int i, type; | |
1876 | ||
1877 | for (i = 0; | |
1878 | i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]); | |
1879 | i++) | |
1880 | { | |
1881 | type = ppc64_elf_howto_raw[i].type; | |
1882 | BFD_ASSERT (type < (sizeof (ppc64_elf_howto_table) | |
1883 | / sizeof (ppc64_elf_howto_table[0]))); | |
1884 | ppc64_elf_howto_table[type] = &ppc64_elf_howto_raw[i]; | |
1885 | } | |
1886 | } | |
1887 | ||
1888 | static reloc_howto_type * | |
4ce794b7 AM |
1889 | ppc64_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, |
1890 | bfd_reloc_code_real_type code) | |
5bd4f169 | 1891 | { |
411e1bfb | 1892 | enum elf_ppc64_reloc_type r = R_PPC64_NONE; |
5bd4f169 AM |
1893 | |
1894 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) | |
1895 | /* Initialize howto table if needed. */ | |
1896 | ppc_howto_init (); | |
1897 | ||
4ce794b7 | 1898 | switch (code) |
5bd4f169 AM |
1899 | { |
1900 | default: | |
4ce794b7 | 1901 | return NULL; |
5bd4f169 | 1902 | |
411e1bfb AM |
1903 | case BFD_RELOC_NONE: r = R_PPC64_NONE; |
1904 | break; | |
1905 | case BFD_RELOC_32: r = R_PPC64_ADDR32; | |
1906 | break; | |
1907 | case BFD_RELOC_PPC_BA26: r = R_PPC64_ADDR24; | |
1908 | break; | |
1909 | case BFD_RELOC_16: r = R_PPC64_ADDR16; | |
1910 | break; | |
1911 | case BFD_RELOC_LO16: r = R_PPC64_ADDR16_LO; | |
1912 | break; | |
1913 | case BFD_RELOC_HI16: r = R_PPC64_ADDR16_HI; | |
1914 | break; | |
1915 | case BFD_RELOC_HI16_S: r = R_PPC64_ADDR16_HA; | |
5bd4f169 | 1916 | break; |
411e1bfb | 1917 | case BFD_RELOC_PPC_BA16: r = R_PPC64_ADDR14; |
5bd4f169 | 1918 | break; |
411e1bfb | 1919 | case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC64_ADDR14_BRTAKEN; |
5bd4f169 | 1920 | break; |
411e1bfb | 1921 | case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC64_ADDR14_BRNTAKEN; |
5bd4f169 | 1922 | break; |
411e1bfb | 1923 | case BFD_RELOC_PPC_B26: r = R_PPC64_REL24; |
5bd4f169 | 1924 | break; |
411e1bfb | 1925 | case BFD_RELOC_PPC_B16: r = R_PPC64_REL14; |
5bd4f169 | 1926 | break; |
411e1bfb | 1927 | case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC64_REL14_BRTAKEN; |
5bd4f169 | 1928 | break; |
411e1bfb | 1929 | case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC64_REL14_BRNTAKEN; |
5bd4f169 | 1930 | break; |
411e1bfb | 1931 | case BFD_RELOC_16_GOTOFF: r = R_PPC64_GOT16; |
5bd4f169 | 1932 | break; |
411e1bfb | 1933 | case BFD_RELOC_LO16_GOTOFF: r = R_PPC64_GOT16_LO; |
5bd4f169 | 1934 | break; |
411e1bfb | 1935 | case BFD_RELOC_HI16_GOTOFF: r = R_PPC64_GOT16_HI; |
5bd4f169 | 1936 | break; |
411e1bfb | 1937 | case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC64_GOT16_HA; |
5bd4f169 | 1938 | break; |
411e1bfb | 1939 | case BFD_RELOC_PPC_COPY: r = R_PPC64_COPY; |
5bd4f169 | 1940 | break; |
411e1bfb | 1941 | case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC64_GLOB_DAT; |
5bd4f169 | 1942 | break; |
411e1bfb | 1943 | case BFD_RELOC_32_PCREL: r = R_PPC64_REL32; |
5bd4f169 | 1944 | break; |
411e1bfb | 1945 | case BFD_RELOC_32_PLTOFF: r = R_PPC64_PLT32; |
5bd4f169 | 1946 | break; |
411e1bfb | 1947 | case BFD_RELOC_32_PLT_PCREL: r = R_PPC64_PLTREL32; |
5bd4f169 | 1948 | break; |
411e1bfb | 1949 | case BFD_RELOC_LO16_PLTOFF: r = R_PPC64_PLT16_LO; |
5bd4f169 | 1950 | break; |
411e1bfb | 1951 | case BFD_RELOC_HI16_PLTOFF: r = R_PPC64_PLT16_HI; |
5bd4f169 | 1952 | break; |
411e1bfb | 1953 | case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC64_PLT16_HA; |
5bd4f169 | 1954 | break; |
411e1bfb | 1955 | case BFD_RELOC_16_BASEREL: r = R_PPC64_SECTOFF; |
5bd4f169 | 1956 | break; |
411e1bfb | 1957 | case BFD_RELOC_LO16_BASEREL: r = R_PPC64_SECTOFF_LO; |
5bd4f169 | 1958 | break; |
411e1bfb | 1959 | case BFD_RELOC_HI16_BASEREL: r = R_PPC64_SECTOFF_HI; |
5bd4f169 | 1960 | break; |
411e1bfb | 1961 | case BFD_RELOC_HI16_S_BASEREL: r = R_PPC64_SECTOFF_HA; |
5bd4f169 | 1962 | break; |
411e1bfb | 1963 | case BFD_RELOC_CTOR: r = R_PPC64_ADDR64; |
5bd4f169 | 1964 | break; |
411e1bfb | 1965 | case BFD_RELOC_64: r = R_PPC64_ADDR64; |
5bd4f169 | 1966 | break; |
411e1bfb | 1967 | case BFD_RELOC_PPC64_HIGHER: r = R_PPC64_ADDR16_HIGHER; |
5bd4f169 | 1968 | break; |
411e1bfb | 1969 | case BFD_RELOC_PPC64_HIGHER_S: r = R_PPC64_ADDR16_HIGHERA; |
5bd4f169 | 1970 | break; |
411e1bfb | 1971 | case BFD_RELOC_PPC64_HIGHEST: r = R_PPC64_ADDR16_HIGHEST; |
5bd4f169 | 1972 | break; |
411e1bfb | 1973 | case BFD_RELOC_PPC64_HIGHEST_S: r = R_PPC64_ADDR16_HIGHESTA; |
5bd4f169 | 1974 | break; |
411e1bfb | 1975 | case BFD_RELOC_64_PCREL: r = R_PPC64_REL64; |
5bd4f169 | 1976 | break; |
411e1bfb | 1977 | case BFD_RELOC_64_PLTOFF: r = R_PPC64_PLT64; |
5bd4f169 | 1978 | break; |
411e1bfb | 1979 | case BFD_RELOC_64_PLT_PCREL: r = R_PPC64_PLTREL64; |
5bd4f169 | 1980 | break; |
411e1bfb | 1981 | case BFD_RELOC_PPC_TOC16: r = R_PPC64_TOC16; |
5bd4f169 | 1982 | break; |
411e1bfb | 1983 | case BFD_RELOC_PPC64_TOC16_LO: r = R_PPC64_TOC16_LO; |
5bd4f169 | 1984 | break; |
411e1bfb | 1985 | case BFD_RELOC_PPC64_TOC16_HI: r = R_PPC64_TOC16_HI; |
5bd4f169 | 1986 | break; |
411e1bfb | 1987 | case BFD_RELOC_PPC64_TOC16_HA: r = R_PPC64_TOC16_HA; |
5bd4f169 | 1988 | break; |
411e1bfb | 1989 | case BFD_RELOC_PPC64_TOC: r = R_PPC64_TOC; |
5bd4f169 | 1990 | break; |
411e1bfb | 1991 | case BFD_RELOC_PPC64_PLTGOT16: r = R_PPC64_PLTGOT16; |
5bd4f169 | 1992 | break; |
411e1bfb | 1993 | case BFD_RELOC_PPC64_PLTGOT16_LO: r = R_PPC64_PLTGOT16_LO; |
5bd4f169 | 1994 | break; |
411e1bfb | 1995 | case BFD_RELOC_PPC64_PLTGOT16_HI: r = R_PPC64_PLTGOT16_HI; |
5bd4f169 | 1996 | break; |
411e1bfb | 1997 | case BFD_RELOC_PPC64_PLTGOT16_HA: r = R_PPC64_PLTGOT16_HA; |
5bd4f169 | 1998 | break; |
411e1bfb | 1999 | case BFD_RELOC_PPC64_ADDR16_DS: r = R_PPC64_ADDR16_DS; |
5bd4f169 | 2000 | break; |
411e1bfb | 2001 | case BFD_RELOC_PPC64_ADDR16_LO_DS: r = R_PPC64_ADDR16_LO_DS; |
5bd4f169 | 2002 | break; |
411e1bfb | 2003 | case BFD_RELOC_PPC64_GOT16_DS: r = R_PPC64_GOT16_DS; |
5bd4f169 | 2004 | break; |
411e1bfb | 2005 | case BFD_RELOC_PPC64_GOT16_LO_DS: r = R_PPC64_GOT16_LO_DS; |
5bd4f169 | 2006 | break; |
411e1bfb | 2007 | case BFD_RELOC_PPC64_PLT16_LO_DS: r = R_PPC64_PLT16_LO_DS; |
5bd4f169 | 2008 | break; |
411e1bfb | 2009 | case BFD_RELOC_PPC64_SECTOFF_DS: r = R_PPC64_SECTOFF_DS; |
5bd4f169 | 2010 | break; |
411e1bfb | 2011 | case BFD_RELOC_PPC64_SECTOFF_LO_DS: r = R_PPC64_SECTOFF_LO_DS; |
5bd4f169 | 2012 | break; |
411e1bfb | 2013 | case BFD_RELOC_PPC64_TOC16_DS: r = R_PPC64_TOC16_DS; |
5bd4f169 | 2014 | break; |
411e1bfb | 2015 | case BFD_RELOC_PPC64_TOC16_LO_DS: r = R_PPC64_TOC16_LO_DS; |
5bd4f169 | 2016 | break; |
411e1bfb | 2017 | case BFD_RELOC_PPC64_PLTGOT16_DS: r = R_PPC64_PLTGOT16_DS; |
5bd4f169 | 2018 | break; |
411e1bfb | 2019 | case BFD_RELOC_PPC64_PLTGOT16_LO_DS: r = R_PPC64_PLTGOT16_LO_DS; |
5bd4f169 | 2020 | break; |
411e1bfb | 2021 | case BFD_RELOC_PPC_TLS: r = R_PPC64_TLS; |
5bd4f169 | 2022 | break; |
411e1bfb | 2023 | case BFD_RELOC_PPC_DTPMOD: r = R_PPC64_DTPMOD64; |
5bd4f169 | 2024 | break; |
411e1bfb | 2025 | case BFD_RELOC_PPC_TPREL16: r = R_PPC64_TPREL16; |
5bd4f169 | 2026 | break; |
411e1bfb | 2027 | case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC64_TPREL16_LO; |
5bd4f169 | 2028 | break; |
411e1bfb | 2029 | case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC64_TPREL16_HI; |
5bd4f169 | 2030 | break; |
411e1bfb | 2031 | case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC64_TPREL16_HA; |
5bd4f169 | 2032 | break; |
411e1bfb | 2033 | case BFD_RELOC_PPC_TPREL: r = R_PPC64_TPREL64; |
5bd4f169 | 2034 | break; |
411e1bfb AM |
2035 | case BFD_RELOC_PPC_DTPREL16: r = R_PPC64_DTPREL16; |
2036 | break; | |
2037 | case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC64_DTPREL16_LO; | |
2038 | break; | |
2039 | case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC64_DTPREL16_HI; | |
2040 | break; | |
2041 | case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC64_DTPREL16_HA; | |
2042 | break; | |
2043 | case BFD_RELOC_PPC_DTPREL: r = R_PPC64_DTPREL64; | |
2044 | break; | |
2045 | case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC64_GOT_TLSGD16; | |
2046 | break; | |
2047 | case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC64_GOT_TLSGD16_LO; | |
2048 | break; | |
2049 | case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC64_GOT_TLSGD16_HI; | |
2050 | break; | |
2051 | case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC64_GOT_TLSGD16_HA; | |
2052 | break; | |
2053 | case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC64_GOT_TLSLD16; | |
2054 | break; | |
2055 | case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC64_GOT_TLSLD16_LO; | |
2056 | break; | |
2057 | case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC64_GOT_TLSLD16_HI; | |
2058 | break; | |
2059 | case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC64_GOT_TLSLD16_HA; | |
2060 | break; | |
2061 | case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC64_GOT_TPREL16_DS; | |
2062 | break; | |
2063 | case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC64_GOT_TPREL16_LO_DS; | |
2064 | break; | |
2065 | case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC64_GOT_TPREL16_HI; | |
2066 | break; | |
2067 | case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC64_GOT_TPREL16_HA; | |
2068 | break; | |
2069 | case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC64_GOT_DTPREL16_DS; | |
2070 | break; | |
2071 | case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC64_GOT_DTPREL16_LO_DS; | |
2072 | break; | |
2073 | case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC64_GOT_DTPREL16_HI; | |
2074 | break; | |
2075 | case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC64_GOT_DTPREL16_HA; | |
2076 | break; | |
2077 | case BFD_RELOC_PPC64_TPREL16_DS: r = R_PPC64_TPREL16_DS; | |
2078 | break; | |
2079 | case BFD_RELOC_PPC64_TPREL16_LO_DS: r = R_PPC64_TPREL16_LO_DS; | |
2080 | break; | |
2081 | case BFD_RELOC_PPC64_TPREL16_HIGHER: r = R_PPC64_TPREL16_HIGHER; | |
2082 | break; | |
2083 | case BFD_RELOC_PPC64_TPREL16_HIGHERA: r = R_PPC64_TPREL16_HIGHERA; | |
2084 | break; | |
2085 | case BFD_RELOC_PPC64_TPREL16_HIGHEST: r = R_PPC64_TPREL16_HIGHEST; | |
2086 | break; | |
2087 | case BFD_RELOC_PPC64_TPREL16_HIGHESTA: r = R_PPC64_TPREL16_HIGHESTA; | |
2088 | break; | |
2089 | case BFD_RELOC_PPC64_DTPREL16_DS: r = R_PPC64_DTPREL16_DS; | |
2090 | break; | |
2091 | case BFD_RELOC_PPC64_DTPREL16_LO_DS: r = R_PPC64_DTPREL16_LO_DS; | |
2092 | break; | |
2093 | case BFD_RELOC_PPC64_DTPREL16_HIGHER: r = R_PPC64_DTPREL16_HIGHER; | |
2094 | break; | |
2095 | case BFD_RELOC_PPC64_DTPREL16_HIGHERA: r = R_PPC64_DTPREL16_HIGHERA; | |
2096 | break; | |
2097 | case BFD_RELOC_PPC64_DTPREL16_HIGHEST: r = R_PPC64_DTPREL16_HIGHEST; | |
2098 | break; | |
2099 | case BFD_RELOC_PPC64_DTPREL16_HIGHESTA: r = R_PPC64_DTPREL16_HIGHESTA; | |
2100 | break; | |
2101 | case BFD_RELOC_VTABLE_INHERIT: r = R_PPC64_GNU_VTINHERIT; | |
2102 | break; | |
2103 | case BFD_RELOC_VTABLE_ENTRY: r = R_PPC64_GNU_VTENTRY; | |
5bd4f169 AM |
2104 | break; |
2105 | } | |
2106 | ||
4ce794b7 | 2107 | return ppc64_elf_howto_table[r]; |
5bd4f169 AM |
2108 | }; |
2109 | ||
2110 | /* Set the howto pointer for a PowerPC ELF reloc. */ | |
2111 | ||
2112 | static void | |
4ce794b7 AM |
2113 | ppc64_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr, |
2114 | Elf_Internal_Rela *dst) | |
5bd4f169 | 2115 | { |
65f38f15 AM |
2116 | unsigned int type; |
2117 | ||
ef60b7ff | 2118 | /* Initialize howto table if needed. */ |
5bd4f169 | 2119 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) |
5bd4f169 AM |
2120 | ppc_howto_init (); |
2121 | ||
65f38f15 | 2122 | type = ELF64_R_TYPE (dst->r_info); |
d0fb9a8d JJ |
2123 | if (type >= (sizeof (ppc64_elf_howto_table) |
2124 | / sizeof (ppc64_elf_howto_table[0]))) | |
2125 | { | |
2126 | (*_bfd_error_handler) (_("%B: invalid relocation type %d"), | |
3ec2b351 NC |
2127 | abfd, (int) type); |
2128 | type = R_PPC64_NONE; | |
d0fb9a8d | 2129 | } |
65f38f15 | 2130 | cache_ptr->howto = ppc64_elf_howto_table[type]; |
5bd4f169 AM |
2131 | } |
2132 | ||
04c9666a | 2133 | /* Handle the R_PPC64_ADDR16_HA and similar relocs. */ |
5bd4f169 AM |
2134 | |
2135 | static bfd_reloc_status_type | |
4ce794b7 AM |
2136 | ppc64_elf_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2137 | void *data, asection *input_section, | |
2138 | bfd *output_bfd, char **error_message) | |
5bd4f169 | 2139 | { |
805fc799 AM |
2140 | /* If this is a relocatable link (output_bfd test tells us), just |
2141 | call the generic function. Any adjustment will be done at final | |
2142 | link time. */ | |
2143 | if (output_bfd != NULL) | |
cedb70c5 | 2144 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2145 | input_section, output_bfd, error_message); |
2146 | ||
2147 | /* Adjust the addend for sign extension of the low 16 bits. | |
2148 | We won't actually be using the low 16 bits, so trashing them | |
2149 | doesn't matter. */ | |
2150 | reloc_entry->addend += 0x8000; | |
2151 | return bfd_reloc_continue; | |
2152 | } | |
5bd4f169 | 2153 | |
2441e016 AM |
2154 | static bfd_reloc_status_type |
2155 | ppc64_elf_branch_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, | |
2156 | void *data, asection *input_section, | |
2157 | bfd *output_bfd, char **error_message) | |
2158 | { | |
2159 | if (output_bfd != NULL) | |
2160 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, | |
2161 | input_section, output_bfd, error_message); | |
2162 | ||
699733f6 AM |
2163 | if (strcmp (symbol->section->name, ".opd") == 0 |
2164 | && (symbol->section->owner->flags & DYNAMIC) == 0) | |
2441e016 AM |
2165 | { |
2166 | bfd_vma dest = opd_entry_value (symbol->section, | |
2167 | symbol->value + reloc_entry->addend, | |
2168 | NULL, NULL); | |
2169 | if (dest != (bfd_vma) -1) | |
2170 | reloc_entry->addend = dest - (symbol->value | |
2171 | + symbol->section->output_section->vma | |
2172 | + symbol->section->output_offset); | |
2173 | } | |
2174 | return bfd_reloc_continue; | |
2175 | } | |
2176 | ||
805fc799 | 2177 | static bfd_reloc_status_type |
4ce794b7 AM |
2178 | ppc64_elf_brtaken_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2179 | void *data, asection *input_section, | |
2180 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2181 | { |
2182 | long insn; | |
04c9666a | 2183 | enum elf_ppc64_reloc_type r_type; |
805fc799 AM |
2184 | bfd_size_type octets; |
2185 | /* Disabled until we sort out how ld should choose 'y' vs 'at'. */ | |
b34976b6 | 2186 | bfd_boolean is_power4 = FALSE; |
805fc799 AM |
2187 | |
2188 | /* If this is a relocatable link (output_bfd test tells us), just | |
2189 | call the generic function. Any adjustment will be done at final | |
2190 | link time. */ | |
5bd4f169 | 2191 | if (output_bfd != NULL) |
cedb70c5 | 2192 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2193 | input_section, output_bfd, error_message); |
2194 | ||
2195 | octets = reloc_entry->address * bfd_octets_per_byte (abfd); | |
2196 | insn = bfd_get_32 (abfd, (bfd_byte *) data + octets); | |
2197 | insn &= ~(0x01 << 21); | |
4ce794b7 | 2198 | r_type = reloc_entry->howto->type; |
805fc799 AM |
2199 | if (r_type == R_PPC64_ADDR14_BRTAKEN |
2200 | || r_type == R_PPC64_REL14_BRTAKEN) | |
cedb70c5 | 2201 | insn |= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */ |
805fc799 AM |
2202 | |
2203 | if (is_power4) | |
5bd4f169 | 2204 | { |
805fc799 AM |
2205 | /* Set 'a' bit. This is 0b00010 in BO field for branch |
2206 | on CR(BI) insns (BO == 001at or 011at), and 0b01000 | |
2207 | for branch on CTR insns (BO == 1a00t or 1a01t). */ | |
2208 | if ((insn & (0x14 << 21)) == (0x04 << 21)) | |
2209 | insn |= 0x02 << 21; | |
2210 | else if ((insn & (0x14 << 21)) == (0x10 << 21)) | |
2211 | insn |= 0x08 << 21; | |
2212 | else | |
2441e016 | 2213 | goto out; |
5bd4f169 | 2214 | } |
805fc799 AM |
2215 | else |
2216 | { | |
2217 | bfd_vma target = 0; | |
2218 | bfd_vma from; | |
5bd4f169 | 2219 | |
805fc799 AM |
2220 | if (!bfd_is_com_section (symbol->section)) |
2221 | target = symbol->value; | |
2222 | target += symbol->section->output_section->vma; | |
2223 | target += symbol->section->output_offset; | |
2224 | target += reloc_entry->addend; | |
5bd4f169 | 2225 | |
805fc799 AM |
2226 | from = (reloc_entry->address |
2227 | + input_section->output_offset | |
2228 | + input_section->output_section->vma); | |
5bd4f169 | 2229 | |
805fc799 AM |
2230 | /* Invert 'y' bit if not the default. */ |
2231 | if ((bfd_signed_vma) (target - from) < 0) | |
2232 | insn ^= 0x01 << 21; | |
2233 | } | |
4ce794b7 | 2234 | bfd_put_32 (abfd, insn, (bfd_byte *) data + octets); |
2441e016 AM |
2235 | out: |
2236 | return ppc64_elf_branch_reloc (abfd, reloc_entry, symbol, data, | |
2237 | input_section, output_bfd, error_message); | |
805fc799 | 2238 | } |
5bd4f169 | 2239 | |
805fc799 | 2240 | static bfd_reloc_status_type |
4ce794b7 AM |
2241 | ppc64_elf_sectoff_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2242 | void *data, asection *input_section, | |
2243 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2244 | { |
2245 | /* If this is a relocatable link (output_bfd test tells us), just | |
2246 | call the generic function. Any adjustment will be done at final | |
2247 | link time. */ | |
2248 | if (output_bfd != NULL) | |
cedb70c5 | 2249 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 | 2250 | input_section, output_bfd, error_message); |
5bd4f169 | 2251 | |
805fc799 AM |
2252 | /* Subtract the symbol section base address. */ |
2253 | reloc_entry->addend -= symbol->section->output_section->vma; | |
5bd4f169 AM |
2254 | return bfd_reloc_continue; |
2255 | } | |
2256 | ||
805fc799 | 2257 | static bfd_reloc_status_type |
4ce794b7 AM |
2258 | ppc64_elf_sectoff_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2259 | void *data, asection *input_section, | |
2260 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2261 | { |
2262 | /* If this is a relocatable link (output_bfd test tells us), just | |
2263 | call the generic function. Any adjustment will be done at final | |
2264 | link time. */ | |
2265 | if (output_bfd != NULL) | |
cedb70c5 | 2266 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2267 | input_section, output_bfd, error_message); |
2268 | ||
2269 | /* Subtract the symbol section base address. */ | |
2270 | reloc_entry->addend -= symbol->section->output_section->vma; | |
2271 | ||
2272 | /* Adjust the addend for sign extension of the low 16 bits. */ | |
2273 | reloc_entry->addend += 0x8000; | |
2274 | return bfd_reloc_continue; | |
2275 | } | |
2276 | ||
2277 | static bfd_reloc_status_type | |
4ce794b7 AM |
2278 | ppc64_elf_toc_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2279 | void *data, asection *input_section, | |
2280 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2281 | { |
2282 | bfd_vma TOCstart; | |
2283 | ||
2284 | /* If this is a relocatable link (output_bfd test tells us), just | |
2285 | call the generic function. Any adjustment will be done at final | |
2286 | link time. */ | |
2287 | if (output_bfd != NULL) | |
cedb70c5 | 2288 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2289 | input_section, output_bfd, error_message); |
2290 | ||
2291 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
2292 | if (TOCstart == 0) | |
2293 | TOCstart = ppc64_elf_toc (input_section->output_section->owner); | |
2294 | ||
2295 | /* Subtract the TOC base address. */ | |
2296 | reloc_entry->addend -= TOCstart + TOC_BASE_OFF; | |
2297 | return bfd_reloc_continue; | |
2298 | } | |
2299 | ||
2300 | static bfd_reloc_status_type | |
4ce794b7 AM |
2301 | ppc64_elf_toc_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2302 | void *data, asection *input_section, | |
2303 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2304 | { |
2305 | bfd_vma TOCstart; | |
2306 | ||
2307 | /* If this is a relocatable link (output_bfd test tells us), just | |
2308 | call the generic function. Any adjustment will be done at final | |
2309 | link time. */ | |
2310 | if (output_bfd != NULL) | |
cedb70c5 | 2311 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2312 | input_section, output_bfd, error_message); |
2313 | ||
2314 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
2315 | if (TOCstart == 0) | |
2316 | TOCstart = ppc64_elf_toc (input_section->output_section->owner); | |
2317 | ||
2318 | /* Subtract the TOC base address. */ | |
2319 | reloc_entry->addend -= TOCstart + TOC_BASE_OFF; | |
2320 | ||
2321 | /* Adjust the addend for sign extension of the low 16 bits. */ | |
2322 | reloc_entry->addend += 0x8000; | |
2323 | return bfd_reloc_continue; | |
2324 | } | |
2325 | ||
2326 | static bfd_reloc_status_type | |
4ce794b7 AM |
2327 | ppc64_elf_toc64_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2328 | void *data, asection *input_section, | |
2329 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2330 | { |
2331 | bfd_vma TOCstart; | |
2332 | bfd_size_type octets; | |
2333 | ||
2334 | /* If this is a relocatable link (output_bfd test tells us), just | |
2335 | call the generic function. Any adjustment will be done at final | |
2336 | link time. */ | |
2337 | if (output_bfd != NULL) | |
cedb70c5 | 2338 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2339 | input_section, output_bfd, error_message); |
2340 | ||
2341 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
2342 | if (TOCstart == 0) | |
2343 | TOCstart = ppc64_elf_toc (input_section->output_section->owner); | |
2344 | ||
2345 | octets = reloc_entry->address * bfd_octets_per_byte (abfd); | |
2346 | bfd_put_64 (abfd, TOCstart + TOC_BASE_OFF, (bfd_byte *) data + octets); | |
2347 | return bfd_reloc_ok; | |
2348 | } | |
2349 | ||
2350 | static bfd_reloc_status_type | |
4ce794b7 AM |
2351 | ppc64_elf_unhandled_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2352 | void *data, asection *input_section, | |
2353 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2354 | { |
2355 | /* If this is a relocatable link (output_bfd test tells us), just | |
2356 | call the generic function. Any adjustment will be done at final | |
2357 | link time. */ | |
2358 | if (output_bfd != NULL) | |
cedb70c5 | 2359 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2360 | input_section, output_bfd, error_message); |
2361 | ||
2362 | if (error_message != NULL) | |
2363 | { | |
2364 | static char buf[60]; | |
2365 | sprintf (buf, "generic linker can't handle %s", | |
2366 | reloc_entry->howto->name); | |
2367 | *error_message = buf; | |
2368 | } | |
2369 | return bfd_reloc_dangerous; | |
2370 | } | |
2371 | ||
e717da7e AM |
2372 | struct ppc64_elf_obj_tdata |
2373 | { | |
2374 | struct elf_obj_tdata elf; | |
2375 | ||
2376 | /* Shortcuts to dynamic linker sections. */ | |
2377 | asection *got; | |
2378 | asection *relgot; | |
2379 | ||
433817dd AM |
2380 | union { |
2381 | /* Used during garbage collection. We attach global symbols defined | |
2382 | on removed .opd entries to this section so that the sym is removed. */ | |
2383 | asection *deleted_section; | |
2384 | ||
2385 | /* Used when adding symbols. */ | |
2386 | bfd_boolean has_dotsym; | |
2387 | } u; | |
81688140 | 2388 | |
e717da7e AM |
2389 | /* TLS local dynamic got entry handling. Suppose for multiple GOT |
2390 | sections means we potentially need one of these for each input bfd. */ | |
2391 | union { | |
2392 | bfd_signed_vma refcount; | |
2393 | bfd_vma offset; | |
2394 | } tlsld_got; | |
8860955f AM |
2395 | |
2396 | /* A copy of relocs before they are modified for --emit-relocs. */ | |
2397 | Elf_Internal_Rela *opd_relocs; | |
e717da7e AM |
2398 | }; |
2399 | ||
2400 | #define ppc64_elf_tdata(bfd) \ | |
2401 | ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any) | |
2402 | ||
2403 | #define ppc64_tlsld_got(bfd) \ | |
2404 | (&ppc64_elf_tdata (bfd)->tlsld_got) | |
2405 | ||
2406 | /* Override the generic function because we store some extras. */ | |
2407 | ||
2408 | static bfd_boolean | |
2409 | ppc64_elf_mkobject (bfd *abfd) | |
2410 | { | |
2411 | bfd_size_type amt = sizeof (struct ppc64_elf_obj_tdata); | |
2412 | abfd->tdata.any = bfd_zalloc (abfd, amt); | |
2413 | if (abfd->tdata.any == NULL) | |
2414 | return FALSE; | |
2415 | return TRUE; | |
2416 | } | |
2417 | ||
ee75fd95 AM |
2418 | /* Return 1 if target is one of ours. */ |
2419 | ||
7b53ace3 | 2420 | static bfd_boolean |
ee75fd95 | 2421 | is_ppc64_elf_target (const struct bfd_target *targ) |
7b53ace3 AM |
2422 | { |
2423 | extern const bfd_target bfd_elf64_powerpc_vec; | |
2424 | extern const bfd_target bfd_elf64_powerpcle_vec; | |
2425 | ||
2426 | return targ == &bfd_elf64_powerpc_vec || targ == &bfd_elf64_powerpcle_vec; | |
2427 | } | |
2428 | ||
feee612b AM |
2429 | /* Fix bad default arch selected for a 64 bit input bfd when the |
2430 | default is 32 bit. */ | |
2431 | ||
b34976b6 | 2432 | static bfd_boolean |
4ce794b7 | 2433 | ppc64_elf_object_p (bfd *abfd) |
feee612b AM |
2434 | { |
2435 | if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 32) | |
2436 | { | |
2437 | Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd); | |
2438 | ||
2439 | if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS64) | |
2440 | { | |
2441 | /* Relies on arch after 32 bit default being 64 bit default. */ | |
2442 | abfd->arch_info = abfd->arch_info->next; | |
2443 | BFD_ASSERT (abfd->arch_info->bits_per_word == 64); | |
2444 | } | |
2445 | } | |
b34976b6 | 2446 | return TRUE; |
feee612b AM |
2447 | } |
2448 | ||
d37c89e5 AM |
2449 | /* Support for core dump NOTE sections. */ |
2450 | ||
2451 | static bfd_boolean | |
2452 | ppc64_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) | |
2453 | { | |
eea6121a | 2454 | size_t offset, size; |
d37c89e5 AM |
2455 | |
2456 | if (note->descsz != 504) | |
2457 | return FALSE; | |
2458 | ||
2459 | /* pr_cursig */ | |
2460 | elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12); | |
2461 | ||
2462 | /* pr_pid */ | |
2463 | elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 32); | |
2464 | ||
2465 | /* pr_reg */ | |
2466 | offset = 112; | |
eea6121a | 2467 | size = 384; |
d37c89e5 AM |
2468 | |
2469 | /* Make a ".reg/999" section. */ | |
2470 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", | |
eea6121a | 2471 | size, note->descpos + offset); |
d37c89e5 AM |
2472 | } |
2473 | ||
2474 | static bfd_boolean | |
2475 | ppc64_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) | |
2476 | { | |
2477 | if (note->descsz != 136) | |
2478 | return FALSE; | |
2479 | ||
2480 | elf_tdata (abfd)->core_program | |
2481 | = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16); | |
2482 | elf_tdata (abfd)->core_command | |
2483 | = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80); | |
2484 | ||
2485 | return TRUE; | |
2486 | } | |
2487 | ||
5bd4f169 AM |
2488 | /* Merge backend specific data from an object file to the output |
2489 | object file when linking. */ | |
2f6d9989 | 2490 | |
b34976b6 | 2491 | static bfd_boolean |
4ce794b7 | 2492 | ppc64_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd) |
5bd4f169 | 2493 | { |
5bd4f169 AM |
2494 | /* Check if we have the same endianess. */ |
2495 | if (ibfd->xvec->byteorder != obfd->xvec->byteorder | |
87e226ce | 2496 | && ibfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN |
5bd4f169 AM |
2497 | && obfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN) |
2498 | { | |
2499 | const char *msg; | |
2500 | ||
2501 | if (bfd_big_endian (ibfd)) | |
d003868e | 2502 | msg = _("%B: compiled for a big endian system " |
4ce794b7 | 2503 | "and target is little endian"); |
5bd4f169 | 2504 | else |
d003868e | 2505 | msg = _("%B: compiled for a little endian system " |
4ce794b7 | 2506 | "and target is big endian"); |
5bd4f169 | 2507 | |
d003868e | 2508 | (*_bfd_error_handler) (msg, ibfd); |
5bd4f169 AM |
2509 | |
2510 | bfd_set_error (bfd_error_wrong_format); | |
b34976b6 | 2511 | return FALSE; |
5bd4f169 AM |
2512 | } |
2513 | ||
b34976b6 | 2514 | return TRUE; |
5bd4f169 | 2515 | } |
f0abc2a1 | 2516 | |
5d35169e AM |
2517 | /* Add extra PPC sections. */ |
2518 | ||
b35d266b | 2519 | static const struct bfd_elf_special_section ppc64_elf_special_sections[]= |
7f4d3958 L |
2520 | { |
2521 | { ".plt", 4, 0, SHT_NOBITS, 0 }, | |
7dcb9820 | 2522 | { ".sbss", 5, -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, |
551b43fd | 2523 | { ".sdata", 6, -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, |
7dcb9820 AM |
2524 | { ".toc", 4, 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, |
2525 | { ".toc1", 5, 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
2526 | { ".tocbss", 7, 0, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, | |
2527 | { NULL, 0, 0, 0, 0 } | |
5d35169e AM |
2528 | }; |
2529 | ||
f0abc2a1 AM |
2530 | struct _ppc64_elf_section_data |
2531 | { | |
2532 | struct bfd_elf_section_data elf; | |
411e1bfb AM |
2533 | |
2534 | /* An array with one entry for each opd function descriptor. */ | |
f0abc2a1 AM |
2535 | union |
2536 | { | |
411e1bfb | 2537 | /* Points to the function code section for local opd entries. */ |
f0abc2a1 | 2538 | asection **func_sec; |
411e1bfb | 2539 | /* After editing .opd, adjust references to opd local syms. */ |
f0abc2a1 AM |
2540 | long *adjust; |
2541 | } opd; | |
411e1bfb AM |
2542 | |
2543 | /* An array for toc sections, indexed by offset/8. | |
2544 | Specifies the relocation symbol index used at a given toc offset. */ | |
2545 | unsigned *t_symndx; | |
f0abc2a1 AM |
2546 | }; |
2547 | ||
2548 | #define ppc64_elf_section_data(sec) \ | |
411e1bfb | 2549 | ((struct _ppc64_elf_section_data *) elf_section_data (sec)) |
f0abc2a1 AM |
2550 | |
2551 | static bfd_boolean | |
4ce794b7 | 2552 | ppc64_elf_new_section_hook (bfd *abfd, asection *sec) |
f0abc2a1 | 2553 | { |
f592407e AM |
2554 | if (!sec->used_by_bfd) |
2555 | { | |
2556 | struct _ppc64_elf_section_data *sdata; | |
2557 | bfd_size_type amt = sizeof (*sdata); | |
f0abc2a1 | 2558 | |
f592407e AM |
2559 | sdata = bfd_zalloc (abfd, amt); |
2560 | if (sdata == NULL) | |
2561 | return FALSE; | |
2562 | sec->used_by_bfd = sdata; | |
2563 | } | |
f0abc2a1 AM |
2564 | |
2565 | return _bfd_elf_new_section_hook (abfd, sec); | |
2566 | } | |
4025353c AM |
2567 | |
2568 | static void * | |
2569 | get_opd_info (asection * sec) | |
2570 | { | |
2571 | if (sec != NULL | |
2572 | && ppc64_elf_section_data (sec) != NULL | |
2573 | && ppc64_elf_section_data (sec)->opd.adjust != NULL) | |
2574 | return ppc64_elf_section_data (sec)->opd.adjust; | |
2575 | return NULL; | |
2576 | } | |
90e3cdf2 JJ |
2577 | \f |
2578 | /* Parameters for the qsort hook. */ | |
2579 | static asection *synthetic_opd; | |
2580 | static bfd_boolean synthetic_relocatable; | |
2581 | ||
699733f6 | 2582 | /* qsort comparison function for ppc64_elf_get_synthetic_symtab. */ |
90e3cdf2 JJ |
2583 | |
2584 | static int | |
2585 | compare_symbols (const void *ap, const void *bp) | |
2586 | { | |
2587 | const asymbol *a = * (const asymbol **) ap; | |
2588 | const asymbol *b = * (const asymbol **) bp; | |
2589 | ||
699733f6 AM |
2590 | /* Section symbols first. */ |
2591 | if ((a->flags & BSF_SECTION_SYM) && !(b->flags & BSF_SECTION_SYM)) | |
90e3cdf2 | 2592 | return -1; |
699733f6 | 2593 | if (!(a->flags & BSF_SECTION_SYM) && (b->flags & BSF_SECTION_SYM)) |
90e3cdf2 JJ |
2594 | return 1; |
2595 | ||
699733f6 | 2596 | /* then .opd symbols. */ |
90e3cdf2 JJ |
2597 | if (a->section == synthetic_opd && b->section != synthetic_opd) |
2598 | return -1; | |
2599 | if (a->section != synthetic_opd && b->section == synthetic_opd) | |
2600 | return 1; | |
2601 | ||
699733f6 | 2602 | /* then other code symbols. */ |
90e3cdf2 JJ |
2603 | if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) |
2604 | == (SEC_CODE | SEC_ALLOC) | |
2605 | && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
2606 | != (SEC_CODE | SEC_ALLOC)) | |
2607 | return -1; | |
2608 | ||
2609 | if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
2610 | != (SEC_CODE | SEC_ALLOC) | |
2611 | && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
2612 | == (SEC_CODE | SEC_ALLOC)) | |
2613 | return 1; | |
2614 | ||
2615 | if (synthetic_relocatable) | |
2616 | { | |
2617 | if (a->section->id < b->section->id) | |
2618 | return -1; | |
2619 | ||
2620 | if (a->section->id > b->section->id) | |
2621 | return 1; | |
2622 | } | |
2623 | ||
2624 | if (a->value + a->section->vma < b->value + b->section->vma) | |
2625 | return -1; | |
2626 | ||
2627 | if (a->value + a->section->vma > b->value + b->section->vma) | |
2628 | return 1; | |
2629 | ||
4d35a0aa AM |
2630 | /* For syms with the same value, prefer strong dynamic global function |
2631 | syms over other syms. */ | |
2632 | if ((a->flags & BSF_GLOBAL) != 0 && (b->flags & BSF_GLOBAL) == 0) | |
2633 | return -1; | |
2634 | ||
2635 | if ((a->flags & BSF_GLOBAL) == 0 && (b->flags & BSF_GLOBAL) != 0) | |
2636 | return 1; | |
2637 | ||
2638 | if ((a->flags & BSF_FUNCTION) != 0 && (b->flags & BSF_FUNCTION) == 0) | |
2639 | return -1; | |
2640 | ||
2641 | if ((a->flags & BSF_FUNCTION) == 0 && (b->flags & BSF_FUNCTION) != 0) | |
2642 | return 1; | |
2643 | ||
2644 | if ((a->flags & BSF_WEAK) == 0 && (b->flags & BSF_WEAK) != 0) | |
2645 | return -1; | |
2646 | ||
2647 | if ((a->flags & BSF_WEAK) != 0 && (b->flags & BSF_WEAK) == 0) | |
2648 | return 1; | |
2649 | ||
2650 | if ((a->flags & BSF_DYNAMIC) != 0 && (b->flags & BSF_DYNAMIC) == 0) | |
2651 | return -1; | |
2652 | ||
2653 | if ((a->flags & BSF_DYNAMIC) == 0 && (b->flags & BSF_DYNAMIC) != 0) | |
2654 | return 1; | |
2655 | ||
90e3cdf2 JJ |
2656 | return 0; |
2657 | } | |
2658 | ||
699733f6 | 2659 | /* Search SYMS for a symbol of the given VALUE. */ |
90e3cdf2 | 2660 | |
699733f6 AM |
2661 | static asymbol * |
2662 | sym_exists_at (asymbol **syms, long lo, long hi, int id, bfd_vma value) | |
90e3cdf2 | 2663 | { |
699733f6 | 2664 | long mid; |
90e3cdf2 | 2665 | |
699733f6 AM |
2666 | if (id == -1) |
2667 | { | |
2668 | while (lo < hi) | |
2669 | { | |
2670 | mid = (lo + hi) >> 1; | |
2671 | if (syms[mid]->value + syms[mid]->section->vma < value) | |
2672 | lo = mid + 1; | |
2673 | else if (syms[mid]->value + syms[mid]->section->vma > value) | |
2674 | hi = mid; | |
2675 | else | |
2676 | return syms[mid]; | |
2677 | } | |
2678 | } | |
2679 | else | |
2680 | { | |
2681 | while (lo < hi) | |
2682 | { | |
2683 | mid = (lo + hi) >> 1; | |
2684 | if (syms[mid]->section->id < id) | |
2685 | lo = mid + 1; | |
2686 | else if (syms[mid]->section->id > id) | |
2687 | hi = mid; | |
2688 | else if (syms[mid]->value < value) | |
2689 | lo = mid + 1; | |
2690 | else if (syms[mid]->value > value) | |
2691 | hi = mid; | |
2692 | else | |
2693 | return syms[mid]; | |
2694 | } | |
2695 | } | |
2696 | return NULL; | |
90e3cdf2 JJ |
2697 | } |
2698 | ||
699733f6 AM |
2699 | /* Create synthetic symbols, effectively restoring "dot-symbol" function |
2700 | entry syms. */ | |
90e3cdf2 JJ |
2701 | |
2702 | static long | |
a7535cf3 AM |
2703 | ppc64_elf_get_synthetic_symtab (bfd *abfd, |
2704 | long static_count, asymbol **static_syms, | |
2705 | long dyn_count, asymbol **dyn_syms, | |
c9727e01 | 2706 | asymbol **ret) |
90e3cdf2 JJ |
2707 | { |
2708 | asymbol *s; | |
699733f6 AM |
2709 | long i; |
2710 | long count; | |
90e3cdf2 | 2711 | char *names; |
a7535cf3 | 2712 | long symcount, codesecsym, codesecsymend, secsymend, opdsymend; |
699733f6 | 2713 | asection *opd; |
90e3cdf2 | 2714 | bfd_boolean relocatable = (abfd->flags & (EXEC_P | DYNAMIC)) == 0; |
a7535cf3 | 2715 | asymbol **syms; |
90e3cdf2 JJ |
2716 | |
2717 | *ret = NULL; | |
2718 | ||
2719 | opd = bfd_get_section_by_name (abfd, ".opd"); | |
2720 | if (opd == NULL) | |
2721 | return 0; | |
2722 | ||
a7535cf3 | 2723 | symcount = static_count; |
c9727e01 | 2724 | if (!relocatable) |
a7535cf3 | 2725 | symcount += dyn_count; |
90e3cdf2 | 2726 | if (symcount == 0) |
c9727e01 | 2727 | return 0; |
90e3cdf2 | 2728 | |
a7535cf3 AM |
2729 | syms = bfd_malloc ((symcount + 1) * sizeof (*syms)); |
2730 | if (syms == NULL) | |
7356fed5 | 2731 | return -1; |
a7535cf3 AM |
2732 | |
2733 | if (!relocatable && static_count != 0 && dyn_count != 0) | |
2734 | { | |
2735 | /* Use both symbol tables. */ | |
2736 | memcpy (syms, static_syms, static_count * sizeof (*syms)); | |
2737 | memcpy (syms + static_count, dyn_syms, (dyn_count + 1) * sizeof (*syms)); | |
2738 | } | |
2739 | else if (!relocatable && static_count == 0) | |
2740 | memcpy (syms, dyn_syms, (symcount + 1) * sizeof (*syms)); | |
2741 | else | |
2742 | memcpy (syms, static_syms, (symcount + 1) * sizeof (*syms)); | |
2743 | ||
90e3cdf2 JJ |
2744 | synthetic_opd = opd; |
2745 | synthetic_relocatable = relocatable; | |
595da8c5 | 2746 | qsort (syms, symcount, sizeof (*syms), compare_symbols); |
90e3cdf2 | 2747 | |
c9727e01 AM |
2748 | if (!relocatable && symcount > 1) |
2749 | { | |
2750 | long j; | |
2751 | /* Trim duplicate syms, since we may have merged the normal and | |
2752 | dynamic symbols. Actually, we only care about syms that have | |
3b36f7e6 | 2753 | different values, so trim any with the same value. */ |
c9727e01 AM |
2754 | for (i = 1, j = 1; i < symcount; ++i) |
2755 | if (syms[i - 1]->value + syms[i - 1]->section->vma | |
2756 | != syms[i]->value + syms[i]->section->vma) | |
2757 | syms[j++] = syms[i]; | |
2758 | symcount = j; | |
2759 | } | |
2760 | ||
699733f6 AM |
2761 | i = 0; |
2762 | if (syms[i]->section == opd) | |
2763 | ++i; | |
2764 | codesecsym = i; | |
90e3cdf2 | 2765 | |
699733f6 AM |
2766 | for (; i < symcount; ++i) |
2767 | if (((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
2768 | != (SEC_CODE | SEC_ALLOC)) | |
2769 | || (syms[i]->flags & BSF_SECTION_SYM) == 0) | |
2770 | break; | |
2771 | codesecsymend = i; | |
90e3cdf2 | 2772 | |
699733f6 AM |
2773 | for (; i < symcount; ++i) |
2774 | if ((syms[i]->flags & BSF_SECTION_SYM) == 0) | |
2775 | break; | |
2776 | secsymend = i; | |
90e3cdf2 | 2777 | |
699733f6 AM |
2778 | for (; i < symcount; ++i) |
2779 | if (syms[i]->section != opd) | |
2780 | break; | |
2781 | opdsymend = i; | |
90e3cdf2 | 2782 | |
699733f6 AM |
2783 | for (; i < symcount; ++i) |
2784 | if ((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
2785 | != (SEC_CODE | SEC_ALLOC)) | |
2786 | break; | |
2787 | symcount = i; | |
2788 | ||
c9727e01 | 2789 | count = 0; |
699733f6 | 2790 | if (opdsymend == secsymend) |
c9727e01 | 2791 | goto done; |
90e3cdf2 | 2792 | |
699733f6 | 2793 | if (relocatable) |
90e3cdf2 | 2794 | { |
699733f6 AM |
2795 | bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean); |
2796 | arelent *r; | |
2797 | size_t size; | |
2798 | long relcount; | |
90e3cdf2 | 2799 | |
699733f6 | 2800 | slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; |
90e3cdf2 | 2801 | relcount = (opd->flags & SEC_RELOC) ? opd->reloc_count : 0; |
7356fed5 | 2802 | if (relcount == 0) |
c9727e01 | 2803 | goto done; |
90e3cdf2 | 2804 | |
7356fed5 AM |
2805 | if (!(*slurp_relocs) (abfd, opd, static_syms, FALSE)) |
2806 | { | |
2807 | count = -1; | |
2808 | goto done; | |
2809 | } | |
2810 | ||
699733f6 | 2811 | size = 0; |
595da8c5 | 2812 | for (i = secsymend, r = opd->relocation; i < opdsymend; ++i) |
699733f6 AM |
2813 | { |
2814 | asymbol *sym; | |
90e3cdf2 | 2815 | |
595da8c5 | 2816 | while (r < opd->relocation + relcount |
699733f6 AM |
2817 | && r->address < syms[i]->value + opd->vma) |
2818 | ++r; | |
90e3cdf2 | 2819 | |
595da8c5 | 2820 | if (r == opd->relocation + relcount) |
699733f6 | 2821 | break; |
90e3cdf2 | 2822 | |
699733f6 AM |
2823 | if (r->address != syms[i]->value + opd->vma) |
2824 | continue; | |
90e3cdf2 | 2825 | |
699733f6 AM |
2826 | if (r->howto->type != R_PPC64_ADDR64) |
2827 | continue; | |
90e3cdf2 | 2828 | |
699733f6 AM |
2829 | sym = *r->sym_ptr_ptr; |
2830 | if (!sym_exists_at (syms, opdsymend, symcount, | |
2831 | sym->section->id, sym->value + r->addend)) | |
2832 | { | |
2833 | ++count; | |
2834 | size += sizeof (asymbol); | |
2835 | size += strlen (syms[i]->name) + 2; | |
2836 | } | |
2837 | } | |
90e3cdf2 | 2838 | |
699733f6 AM |
2839 | s = *ret = bfd_malloc (size); |
2840 | if (s == NULL) | |
2841 | { | |
7356fed5 | 2842 | count = -1; |
c9727e01 | 2843 | goto done; |
699733f6 | 2844 | } |
90e3cdf2 | 2845 | |
699733f6 | 2846 | names = (char *) (s + count); |
90e3cdf2 | 2847 | |
595da8c5 | 2848 | for (i = secsymend, r = opd->relocation; i < opdsymend; ++i) |
90e3cdf2 | 2849 | { |
699733f6 | 2850 | asymbol *sym; |
90e3cdf2 | 2851 | |
595da8c5 | 2852 | while (r < opd->relocation + relcount |
699733f6 AM |
2853 | && r->address < syms[i]->value + opd->vma) |
2854 | ++r; | |
90e3cdf2 | 2855 | |
595da8c5 | 2856 | if (r == opd->relocation + relcount) |
699733f6 AM |
2857 | break; |
2858 | ||
2859 | if (r->address != syms[i]->value + opd->vma) | |
2860 | continue; | |
2861 | ||
2862 | if (r->howto->type != R_PPC64_ADDR64) | |
2863 | continue; | |
90e3cdf2 | 2864 | |
699733f6 AM |
2865 | sym = *r->sym_ptr_ptr; |
2866 | if (!sym_exists_at (syms, opdsymend, symcount, | |
2867 | sym->section->id, sym->value + r->addend)) | |
2868 | { | |
2869 | size_t len; | |
2870 | ||
2871 | *s = *syms[i]; | |
2872 | s->section = sym->section; | |
2873 | s->value = sym->value + r->addend; | |
2874 | s->name = names; | |
2875 | *names++ = '.'; | |
2876 | len = strlen (syms[i]->name); | |
2877 | memcpy (names, syms[i]->name, len + 1); | |
2878 | names += len + 1; | |
2879 | s++; | |
2880 | } | |
2881 | } | |
2882 | } | |
2883 | else | |
90e3cdf2 | 2884 | { |
699733f6 AM |
2885 | bfd_byte *contents; |
2886 | size_t size; | |
90e3cdf2 | 2887 | |
699733f6 AM |
2888 | if (!bfd_malloc_and_get_section (abfd, opd, &contents)) |
2889 | { | |
2890 | if (contents) | |
c9727e01 AM |
2891 | { |
2892 | free_contents_and_exit: | |
2893 | free (contents); | |
2894 | } | |
7356fed5 | 2895 | count = -1; |
c9727e01 | 2896 | goto done; |
699733f6 | 2897 | } |
90e3cdf2 | 2898 | |
699733f6 AM |
2899 | size = 0; |
2900 | for (i = secsymend; i < opdsymend; ++i) | |
2901 | { | |
2902 | bfd_vma ent; | |
90e3cdf2 | 2903 | |
699733f6 AM |
2904 | ent = bfd_get_64 (abfd, contents + syms[i]->value); |
2905 | if (!sym_exists_at (syms, opdsymend, symcount, -1, ent)) | |
2906 | { | |
2907 | ++count; | |
2908 | size += sizeof (asymbol); | |
2909 | size += strlen (syms[i]->name) + 2; | |
2910 | } | |
2911 | } | |
90e3cdf2 | 2912 | |
699733f6 AM |
2913 | s = *ret = bfd_malloc (size); |
2914 | if (s == NULL) | |
7356fed5 | 2915 | goto free_contents_and_exit; |
90e3cdf2 | 2916 | |
699733f6 | 2917 | names = (char *) (s + count); |
90e3cdf2 | 2918 | |
699733f6 | 2919 | for (i = secsymend; i < opdsymend; ++i) |
90e3cdf2 | 2920 | { |
699733f6 | 2921 | bfd_vma ent; |
90e3cdf2 | 2922 | |
699733f6 AM |
2923 | ent = bfd_get_64 (abfd, contents + syms[i]->value); |
2924 | if (!sym_exists_at (syms, opdsymend, symcount, -1, ent)) | |
90e3cdf2 | 2925 | { |
c9727e01 | 2926 | long lo, hi; |
699733f6 | 2927 | size_t len; |
c9727e01 | 2928 | asection *sec = abfd->sections; |
90e3cdf2 | 2929 | |
699733f6 AM |
2930 | *s = *syms[i]; |
2931 | lo = codesecsym; | |
2932 | hi = codesecsymend; | |
2933 | while (lo < hi) | |
2934 | { | |
c9727e01 | 2935 | long mid = (lo + hi) >> 1; |
699733f6 AM |
2936 | if (syms[mid]->section->vma < ent) |
2937 | lo = mid + 1; | |
2938 | else if (syms[mid]->section->vma > ent) | |
2939 | hi = mid; | |
2940 | else | |
c9727e01 AM |
2941 | { |
2942 | sec = syms[mid]->section; | |
2943 | break; | |
2944 | } | |
699733f6 AM |
2945 | } |
2946 | ||
c9727e01 | 2947 | if (lo >= hi && lo > codesecsym) |
699733f6 | 2948 | sec = syms[lo - 1]->section; |
699733f6 AM |
2949 | |
2950 | for (; sec != NULL; sec = sec->next) | |
2951 | { | |
2952 | if (sec->vma > ent) | |
2953 | break; | |
2954 | if ((sec->flags & SEC_ALLOC) == 0 | |
2955 | || (sec->flags & SEC_LOAD) == 0) | |
2956 | break; | |
2957 | if ((sec->flags & SEC_CODE) != 0) | |
2958 | s->section = sec; | |
2959 | } | |
2960 | s->value = ent - s->section->vma; | |
2961 | s->name = names; | |
2962 | *names++ = '.'; | |
2963 | len = strlen (syms[i]->name); | |
2964 | memcpy (names, syms[i]->name, len + 1); | |
2965 | names += len + 1; | |
2966 | s++; | |
90e3cdf2 | 2967 | } |
90e3cdf2 | 2968 | } |
699733f6 | 2969 | free (contents); |
90e3cdf2 JJ |
2970 | } |
2971 | ||
c9727e01 | 2972 | done: |
a7535cf3 | 2973 | free (syms); |
90e3cdf2 JJ |
2974 | return count; |
2975 | } | |
5bd4f169 | 2976 | \f |
65f38f15 AM |
2977 | /* The following functions are specific to the ELF linker, while |
2978 | functions above are used generally. Those named ppc64_elf_* are | |
2979 | called by the main ELF linker code. They appear in this file more | |
2980 | or less in the order in which they are called. eg. | |
2981 | ppc64_elf_check_relocs is called early in the link process, | |
2982 | ppc64_elf_finish_dynamic_sections is one of the last functions | |
e86ce104 AM |
2983 | called. |
2984 | ||
2985 | PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that | |
2986 | functions have both a function code symbol and a function descriptor | |
2987 | symbol. A call to foo in a relocatable object file looks like: | |
2988 | ||
2989 | . .text | |
2990 | . x: | |
2991 | . bl .foo | |
2992 | . nop | |
2993 | ||
2994 | The function definition in another object file might be: | |
2995 | ||
2996 | . .section .opd | |
2997 | . foo: .quad .foo | |
2998 | . .quad .TOC.@tocbase | |
2999 | . .quad 0 | |
3000 | . | |
3001 | . .text | |
3002 | . .foo: blr | |
3003 | ||
3004 | When the linker resolves the call during a static link, the branch | |
3005 | unsurprisingly just goes to .foo and the .opd information is unused. | |
3006 | If the function definition is in a shared library, things are a little | |
3007 | different: The call goes via a plt call stub, the opd information gets | |
3008 | copied to the plt, and the linker patches the nop. | |
3009 | ||
3010 | . x: | |
3011 | . bl .foo_stub | |
3012 | . ld 2,40(1) | |
3013 | . | |
3014 | . | |
3015 | . .foo_stub: | |
3016 | . addis 12,2,Lfoo@toc@ha # in practice, the call stub | |
411e1bfb | 3017 | . addi 12,12,Lfoo@toc@l # is slightly optimized, but |
e86ce104 AM |
3018 | . std 2,40(1) # this is the general idea |
3019 | . ld 11,0(12) | |
3020 | . ld 2,8(12) | |
3021 | . mtctr 11 | |
3022 | . ld 11,16(12) | |
3023 | . bctr | |
3024 | . | |
3025 | . .section .plt | |
3026 | . Lfoo: reloc (R_PPC64_JMP_SLOT, foo) | |
3027 | ||
3028 | The "reloc ()" notation is supposed to indicate that the linker emits | |
3029 | an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd | |
3030 | copying. | |
3031 | ||
3032 | What are the difficulties here? Well, firstly, the relocations | |
3033 | examined by the linker in check_relocs are against the function code | |
3034 | sym .foo, while the dynamic relocation in the plt is emitted against | |
3035 | the function descriptor symbol, foo. Somewhere along the line, we need | |
3036 | to carefully copy dynamic link information from one symbol to the other. | |
3037 | Secondly, the generic part of the elf linker will make .foo a dynamic | |
3038 | symbol as is normal for most other backends. We need foo dynamic | |
3039 | instead, at least for an application final link. However, when | |
3040 | creating a shared library containing foo, we need to have both symbols | |
3041 | dynamic so that references to .foo are satisfied during the early | |
3042 | stages of linking. Otherwise the linker might decide to pull in a | |
8387904d AM |
3043 | definition from some other object, eg. a static library. |
3044 | ||
3045 | Update: As of August 2004, we support a new convention. Function | |
3046 | calls may use the function descriptor symbol, ie. "bl foo". This | |
3047 | behaves exactly as "bl .foo". */ | |
65f38f15 AM |
3048 | |
3049 | /* The linker needs to keep track of the number of relocs that it | |
3050 | decides to copy as dynamic relocs in check_relocs for each symbol. | |
3051 | This is so that it can later discard them if they are found to be | |
3052 | unnecessary. We store the information in a field extending the | |
3053 | regular ELF linker hash table. */ | |
3054 | ||
3055 | struct ppc_dyn_relocs | |
3056 | { | |
3057 | struct ppc_dyn_relocs *next; | |
3058 | ||
3059 | /* The input section of the reloc. */ | |
3060 | asection *sec; | |
3061 | ||
3062 | /* Total number of relocs copied for the input section. */ | |
3063 | bfd_size_type count; | |
3064 | ||
3065 | /* Number of pc-relative relocs copied for the input section. */ | |
3066 | bfd_size_type pc_count; | |
3067 | }; | |
3068 | ||
411e1bfb AM |
3069 | /* Track GOT entries needed for a given symbol. We might need more |
3070 | than one got entry per symbol. */ | |
3071 | struct got_entry | |
3072 | { | |
3073 | struct got_entry *next; | |
3074 | ||
e7b938ca | 3075 | /* The symbol addend that we'll be placing in the GOT. */ |
411e1bfb AM |
3076 | bfd_vma addend; |
3077 | ||
e717da7e AM |
3078 | /* Unlike other ELF targets, we use separate GOT entries for the same |
3079 | symbol referenced from different input files. This is to support | |
3080 | automatic multiple TOC/GOT sections, where the TOC base can vary | |
3081 | from one input file to another. | |
3082 | ||
3083 | Point to the BFD owning this GOT entry. */ | |
3084 | bfd *owner; | |
3085 | ||
3086 | /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD, | |
3087 | TLS_TPREL or TLS_DTPREL for tls entries. */ | |
3088 | char tls_type; | |
3089 | ||
e7b938ca | 3090 | /* Reference count until size_dynamic_sections, GOT offset thereafter. */ |
411e1bfb AM |
3091 | union |
3092 | { | |
3093 | bfd_signed_vma refcount; | |
3094 | bfd_vma offset; | |
3095 | } got; | |
411e1bfb AM |
3096 | }; |
3097 | ||
3098 | /* The same for PLT. */ | |
3099 | struct plt_entry | |
3100 | { | |
3101 | struct plt_entry *next; | |
3102 | ||
3103 | bfd_vma addend; | |
3104 | ||
3105 | union | |
3106 | { | |
3107 | bfd_signed_vma refcount; | |
3108 | bfd_vma offset; | |
3109 | } plt; | |
3110 | }; | |
3111 | ||
65f38f15 | 3112 | /* Of those relocs that might be copied as dynamic relocs, this macro |
58ac9f71 AM |
3113 | selects those that must be copied when linking a shared library, |
3114 | even when the symbol is local. */ | |
65f38f15 | 3115 | |
411e1bfb | 3116 | #define MUST_BE_DYN_RELOC(RTYPE) \ |
805fc799 AM |
3117 | ((RTYPE) != R_PPC64_REL32 \ |
3118 | && (RTYPE) != R_PPC64_REL64 \ | |
04c9666a | 3119 | && (RTYPE) != R_PPC64_REL30) |
65f38f15 | 3120 | |
f4656909 AM |
3121 | /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid |
3122 | copying dynamic variables from a shared lib into an app's dynbss | |
3123 | section, and instead use a dynamic relocation to point into the | |
5d35169e AM |
3124 | shared lib. With code that gcc generates, it's vital that this be |
3125 | enabled; In the PowerPC64 ABI, the address of a function is actually | |
3126 | the address of a function descriptor, which resides in the .opd | |
3127 | section. gcc uses the descriptor directly rather than going via the | |
3128 | GOT as some other ABI's do, which means that initialized function | |
3129 | pointers must reference the descriptor. Thus, a function pointer | |
3130 | initialized to the address of a function in a shared library will | |
3131 | either require a copy reloc, or a dynamic reloc. Using a copy reloc | |
4cc11e76 | 3132 | redefines the function descriptor symbol to point to the copy. This |
5d35169e AM |
3133 | presents a problem as a plt entry for that function is also |
3134 | initialized from the function descriptor symbol and the copy reloc | |
3135 | may not be initialized first. */ | |
a23b6845 | 3136 | #define ELIMINATE_COPY_RELOCS 1 |
f4656909 | 3137 | |
721956f4 AM |
3138 | /* Section name for stubs is the associated section name plus this |
3139 | string. */ | |
3140 | #define STUB_SUFFIX ".stub" | |
3141 | ||
3142 | /* Linker stubs. | |
3143 | ppc_stub_long_branch: | |
3144 | Used when a 14 bit branch (or even a 24 bit branch) can't reach its | |
3145 | destination, but a 24 bit branch in a stub section will reach. | |
3146 | . b dest | |
3147 | ||
3148 | ppc_stub_plt_branch: | |
3149 | Similar to the above, but a 24 bit branch in the stub section won't | |
3150 | reach its destination. | |
87e226ce AM |
3151 | . addis %r12,%r2,xxx@toc@ha |
3152 | . ld %r11,xxx@toc@l(%r12) | |
721956f4 AM |
3153 | . mtctr %r11 |
3154 | . bctr | |
3155 | ||
3156 | ppc_stub_plt_call: | |
2c66dc6c AM |
3157 | Used to call a function in a shared library. If it so happens that |
3158 | the plt entry referenced crosses a 64k boundary, then an extra | |
3159 | "addis %r12,%r12,1" will be inserted before the load at xxx+8 or | |
3160 | xxx+16 as appropriate. | |
87e226ce | 3161 | . addis %r12,%r2,xxx@toc@ha |
721956f4 | 3162 | . std %r2,40(%r1) |
87e226ce AM |
3163 | . ld %r11,xxx+0@toc@l(%r12) |
3164 | . ld %r2,xxx+8@toc@l(%r12) | |
721956f4 | 3165 | . mtctr %r11 |
87e226ce | 3166 | . ld %r11,xxx+16@toc@l(%r12) |
721956f4 | 3167 | . bctr |
ad8e1ba5 AM |
3168 | |
3169 | ppc_stub_long_branch and ppc_stub_plt_branch may also have additional | |
3170 | code to adjust the value and save r2 to support multiple toc sections. | |
3171 | A ppc_stub_long_branch with an r2 offset looks like: | |
3172 | . std %r2,40(%r1) | |
3173 | . addis %r2,%r2,off@ha | |
3174 | . addi %r2,%r2,off@l | |
3175 | . b dest | |
3176 | ||
3177 | A ppc_stub_plt_branch with an r2 offset looks like: | |
3178 | . std %r2,40(%r1) | |
3179 | . addis %r12,%r2,xxx@toc@ha | |
3180 | . ld %r11,xxx@toc@l(%r12) | |
3181 | . addis %r2,%r2,off@ha | |
3182 | . addi %r2,%r2,off@l | |
3183 | . mtctr %r11 | |
3184 | . bctr | |
721956f4 AM |
3185 | */ |
3186 | ||
3187 | enum ppc_stub_type { | |
3188 | ppc_stub_none, | |
3189 | ppc_stub_long_branch, | |
ad8e1ba5 | 3190 | ppc_stub_long_branch_r2off, |
721956f4 | 3191 | ppc_stub_plt_branch, |
ad8e1ba5 | 3192 | ppc_stub_plt_branch_r2off, |
721956f4 AM |
3193 | ppc_stub_plt_call |
3194 | }; | |
3195 | ||
3196 | struct ppc_stub_hash_entry { | |
3197 | ||
3198 | /* Base hash table entry structure. */ | |
3199 | struct bfd_hash_entry root; | |
3200 | ||
ad8e1ba5 AM |
3201 | enum ppc_stub_type stub_type; |
3202 | ||
721956f4 AM |
3203 | /* The stub section. */ |
3204 | asection *stub_sec; | |
3205 | ||
3206 | /* Offset within stub_sec of the beginning of this stub. */ | |
3207 | bfd_vma stub_offset; | |
3208 | ||
3209 | /* Given the symbol's value and its section we can determine its final | |
3210 | value when building the stubs (so the stub knows where to jump. */ | |
3211 | bfd_vma target_value; | |
3212 | asection *target_section; | |
3213 | ||
721956f4 AM |
3214 | /* The symbol table entry, if any, that this was derived from. */ |
3215 | struct ppc_link_hash_entry *h; | |
3216 | ||
411e1bfb AM |
3217 | /* And the reloc addend that this was derived from. */ |
3218 | bfd_vma addend; | |
3219 | ||
721956f4 AM |
3220 | /* Where this stub is being called from, or, in the case of combined |
3221 | stub sections, the first input section in the group. */ | |
3222 | asection *id_sec; | |
3223 | }; | |
3224 | ||
3225 | struct ppc_branch_hash_entry { | |
3226 | ||
3227 | /* Base hash table entry structure. */ | |
3228 | struct bfd_hash_entry root; | |
3229 | ||
c456f082 | 3230 | /* Offset within branch lookup table. */ |
721956f4 AM |
3231 | unsigned int offset; |
3232 | ||
3233 | /* Generation marker. */ | |
3234 | unsigned int iter; | |
3235 | }; | |
65f38f15 AM |
3236 | |
3237 | struct ppc_link_hash_entry | |
3238 | { | |
3239 | struct elf_link_hash_entry elf; | |
3240 | ||
721956f4 AM |
3241 | /* A pointer to the most recently used stub hash entry against this |
3242 | symbol. */ | |
3243 | struct ppc_stub_hash_entry *stub_cache; | |
3244 | ||
65f38f15 AM |
3245 | /* Track dynamic relocs copied for this symbol. */ |
3246 | struct ppc_dyn_relocs *dyn_relocs; | |
e86ce104 | 3247 | |
721956f4 | 3248 | /* Link between function code and descriptor symbols. */ |
34814b9f | 3249 | struct ppc_link_hash_entry *oh; |
721956f4 | 3250 | |
e86ce104 AM |
3251 | /* Flag function code and descriptor symbols. */ |
3252 | unsigned int is_func:1; | |
3253 | unsigned int is_func_descriptor:1; | |
908b32fc | 3254 | unsigned int fake:1; |
411e1bfb | 3255 | |
c5614fa4 AM |
3256 | /* Whether global opd/toc sym has been adjusted or not. |
3257 | After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag | |
3258 | should be set for all globals defined in any opd/toc section. */ | |
754021d0 AM |
3259 | unsigned int adjust_done:1; |
3260 | ||
99877b66 AM |
3261 | /* Set if we twiddled this symbol to weak at some stage. */ |
3262 | unsigned int was_undefined:1; | |
3263 | ||
411e1bfb | 3264 | /* Contexts in which symbol is used in the GOT (or TOC). |
e7b938ca AM |
3265 | TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the |
3266 | corresponding relocs are encountered during check_relocs. | |
3267 | tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to | |
3268 | indicate the corresponding GOT entry type is not needed. | |
3269 | tls_optimize may also set TLS_TPRELGD when a GD reloc turns into | |
3270 | a TPREL one. We use a separate flag rather than setting TPREL | |
3271 | just for convenience in distinguishing the two cases. */ | |
3272 | #define TLS_GD 1 /* GD reloc. */ | |
3273 | #define TLS_LD 2 /* LD reloc. */ | |
3274 | #define TLS_TPREL 4 /* TPREL reloc, => IE. */ | |
3275 | #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */ | |
3276 | #define TLS_TLS 16 /* Any TLS reloc. */ | |
3277 | #define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */ | |
3278 | #define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */ | |
3279 | char tls_mask; | |
65f38f15 AM |
3280 | }; |
3281 | ||
3282 | /* ppc64 ELF linker hash table. */ | |
3283 | ||
3284 | struct ppc_link_hash_table | |
3285 | { | |
3286 | struct elf_link_hash_table elf; | |
3287 | ||
721956f4 AM |
3288 | /* The stub hash table. */ |
3289 | struct bfd_hash_table stub_hash_table; | |
3290 | ||
3291 | /* Another hash table for plt_branch stubs. */ | |
3292 | struct bfd_hash_table branch_hash_table; | |
3293 | ||
3294 | /* Linker stub bfd. */ | |
3295 | bfd *stub_bfd; | |
3296 | ||
3297 | /* Linker call-backs. */ | |
4ce794b7 AM |
3298 | asection * (*add_stub_section) (const char *, asection *); |
3299 | void (*layout_sections_again) (void); | |
721956f4 AM |
3300 | |
3301 | /* Array to keep track of which stub sections have been created, and | |
3302 | information on stub grouping. */ | |
3303 | struct map_stub { | |
3304 | /* This is the section to which stubs in the group will be attached. */ | |
3305 | asection *link_sec; | |
3306 | /* The stub section. */ | |
3307 | asection *stub_sec; | |
ad8e1ba5 AM |
3308 | /* Along with elf_gp, specifies the TOC pointer used in this group. */ |
3309 | bfd_vma toc_off; | |
721956f4 AM |
3310 | } *stub_group; |
3311 | ||
ad8e1ba5 AM |
3312 | /* Temp used when calculating TOC pointers. */ |
3313 | bfd_vma toc_curr; | |
3314 | ||
8f3bab57 AM |
3315 | /* Highest input section id. */ |
3316 | int top_id; | |
3317 | ||
734b6cf9 AM |
3318 | /* Highest output section index. */ |
3319 | int top_index; | |
3320 | ||
3321 | /* List of input sections for each output section. */ | |
3322 | asection **input_list; | |
721956f4 | 3323 | |
65f38f15 | 3324 | /* Short-cuts to get to dynamic linker sections. */ |
4ce794b7 | 3325 | asection *got; |
4ce794b7 AM |
3326 | asection *plt; |
3327 | asection *relplt; | |
3328 | asection *dynbss; | |
3329 | asection *relbss; | |
3330 | asection *glink; | |
82bd7b59 | 3331 | asection *sfpr; |
4ce794b7 AM |
3332 | asection *brlt; |
3333 | asection *relbrlt; | |
ec338859 | 3334 | |
8387904d AM |
3335 | /* Shortcut to .__tls_get_addr and __tls_get_addr. */ |
3336 | struct ppc_link_hash_entry *tls_get_addr; | |
3337 | struct ppc_link_hash_entry *tls_get_addr_fd; | |
411e1bfb | 3338 | |
9b5ecbd0 AM |
3339 | /* Statistics. */ |
3340 | unsigned long stub_count[ppc_stub_plt_call]; | |
3341 | ||
ee75fd95 AM |
3342 | /* Number of stubs against global syms. */ |
3343 | unsigned long stub_globals; | |
3344 | ||
ad8e1ba5 | 3345 | /* Set if we should emit symbols for stubs. */ |
99877b66 | 3346 | unsigned int emit_stub_syms:1; |
ad8e1ba5 | 3347 | |
4c52953f AM |
3348 | /* Support for multiple toc sections. */ |
3349 | unsigned int no_multi_toc:1; | |
3350 | unsigned int multi_toc_needed:1; | |
3351 | ||
5d1634d7 | 3352 | /* Set on error. */ |
99877b66 | 3353 | unsigned int stub_error:1; |
721956f4 AM |
3354 | |
3355 | /* Flag set when small branches are detected. Used to | |
3356 | select suitable defaults for the stub group size. */ | |
99877b66 AM |
3357 | unsigned int has_14bit_branch:1; |
3358 | ||
3359 | /* Temp used by ppc64_elf_check_directives. */ | |
3360 | unsigned int twiddled_syms:1; | |
721956f4 AM |
3361 | |
3362 | /* Incremented every time we size stubs. */ | |
3363 | unsigned int stub_iteration; | |
5d1634d7 | 3364 | |
ec338859 AM |
3365 | /* Small local sym to section mapping cache. */ |
3366 | struct sym_sec_cache sym_sec; | |
65f38f15 AM |
3367 | }; |
3368 | ||
4c52953f AM |
3369 | /* Rename some of the generic section flags to better document how they |
3370 | are used here. */ | |
3371 | #define has_toc_reloc has_gp_reloc | |
3372 | #define makes_toc_func_call need_finalize_relax | |
3373 | #define call_check_in_progress reloc_done | |
3374 | ||
65f38f15 AM |
3375 | /* Get the ppc64 ELF linker hash table from a link_info structure. */ |
3376 | ||
3377 | #define ppc_hash_table(p) \ | |
3378 | ((struct ppc_link_hash_table *) ((p)->hash)) | |
3379 | ||
721956f4 AM |
3380 | #define ppc_stub_hash_lookup(table, string, create, copy) \ |
3381 | ((struct ppc_stub_hash_entry *) \ | |
3382 | bfd_hash_lookup ((table), (string), (create), (copy))) | |
3383 | ||
3384 | #define ppc_branch_hash_lookup(table, string, create, copy) \ | |
3385 | ((struct ppc_branch_hash_entry *) \ | |
3386 | bfd_hash_lookup ((table), (string), (create), (copy))) | |
3387 | ||
3388 | /* Create an entry in the stub hash table. */ | |
3389 | ||
3390 | static struct bfd_hash_entry * | |
4ce794b7 AM |
3391 | stub_hash_newfunc (struct bfd_hash_entry *entry, |
3392 | struct bfd_hash_table *table, | |
3393 | const char *string) | |
721956f4 AM |
3394 | { |
3395 | /* Allocate the structure if it has not already been allocated by a | |
3396 | subclass. */ | |
3397 | if (entry == NULL) | |
3398 | { | |
3399 | entry = bfd_hash_allocate (table, sizeof (struct ppc_stub_hash_entry)); | |
3400 | if (entry == NULL) | |
3401 | return entry; | |
3402 | } | |
3403 | ||
3404 | /* Call the allocation method of the superclass. */ | |
3405 | entry = bfd_hash_newfunc (entry, table, string); | |
3406 | if (entry != NULL) | |
3407 | { | |
3408 | struct ppc_stub_hash_entry *eh; | |
3409 | ||
3410 | /* Initialize the local fields. */ | |
3411 | eh = (struct ppc_stub_hash_entry *) entry; | |
ad8e1ba5 | 3412 | eh->stub_type = ppc_stub_none; |
721956f4 AM |
3413 | eh->stub_sec = NULL; |
3414 | eh->stub_offset = 0; | |
3415 | eh->target_value = 0; | |
3416 | eh->target_section = NULL; | |
721956f4 AM |
3417 | eh->h = NULL; |
3418 | eh->id_sec = NULL; | |
3419 | } | |
3420 | ||
3421 | return entry; | |
3422 | } | |
3423 | ||
3424 | /* Create an entry in the branch hash table. */ | |
3425 | ||
3426 | static struct bfd_hash_entry * | |
4ce794b7 AM |
3427 | branch_hash_newfunc (struct bfd_hash_entry *entry, |
3428 | struct bfd_hash_table *table, | |
3429 | const char *string) | |
721956f4 AM |
3430 | { |
3431 | /* Allocate the structure if it has not already been allocated by a | |
3432 | subclass. */ | |
3433 | if (entry == NULL) | |
3434 | { | |
3435 | entry = bfd_hash_allocate (table, sizeof (struct ppc_branch_hash_entry)); | |
3436 | if (entry == NULL) | |
3437 | return entry; | |
3438 | } | |
3439 | ||
3440 | /* Call the allocation method of the superclass. */ | |
3441 | entry = bfd_hash_newfunc (entry, table, string); | |
3442 | if (entry != NULL) | |
3443 | { | |
3444 | struct ppc_branch_hash_entry *eh; | |
3445 | ||
3446 | /* Initialize the local fields. */ | |
3447 | eh = (struct ppc_branch_hash_entry *) entry; | |
3448 | eh->offset = 0; | |
3449 | eh->iter = 0; | |
3450 | } | |
3451 | ||
3452 | return entry; | |
3453 | } | |
3454 | ||
65f38f15 AM |
3455 | /* Create an entry in a ppc64 ELF linker hash table. */ |
3456 | ||
3457 | static struct bfd_hash_entry * | |
4ce794b7 AM |
3458 | link_hash_newfunc (struct bfd_hash_entry *entry, |
3459 | struct bfd_hash_table *table, | |
3460 | const char *string) | |
65f38f15 AM |
3461 | { |
3462 | /* Allocate the structure if it has not already been allocated by a | |
3463 | subclass. */ | |
3464 | if (entry == NULL) | |
3465 | { | |
3466 | entry = bfd_hash_allocate (table, sizeof (struct ppc_link_hash_entry)); | |
3467 | if (entry == NULL) | |
3468 | return entry; | |
3469 | } | |
3470 | ||
3471 | /* Call the allocation method of the superclass. */ | |
3472 | entry = _bfd_elf_link_hash_newfunc (entry, table, string); | |
3473 | if (entry != NULL) | |
3474 | { | |
3475 | struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) entry; | |
3476 | ||
908b32fc AM |
3477 | memset (&eh->stub_cache, 0, |
3478 | (sizeof (struct ppc_link_hash_entry) | |
3479 | - offsetof (struct ppc_link_hash_entry, stub_cache))); | |
65f38f15 AM |
3480 | } |
3481 | ||
3482 | return entry; | |
3483 | } | |
3484 | ||
3485 | /* Create a ppc64 ELF linker hash table. */ | |
3486 | ||
3487 | static struct bfd_link_hash_table * | |
4ce794b7 | 3488 | ppc64_elf_link_hash_table_create (bfd *abfd) |
65f38f15 AM |
3489 | { |
3490 | struct ppc_link_hash_table *htab; | |
3491 | bfd_size_type amt = sizeof (struct ppc_link_hash_table); | |
3492 | ||
4ce794b7 | 3493 | htab = bfd_zmalloc (amt); |
65f38f15 AM |
3494 | if (htab == NULL) |
3495 | return NULL; | |
3496 | ||
66eb6687 AM |
3497 | if (!_bfd_elf_link_hash_table_init (&htab->elf, abfd, link_hash_newfunc, |
3498 | sizeof (struct ppc_link_hash_entry))) | |
65f38f15 | 3499 | { |
e2d34d7d | 3500 | free (htab); |
65f38f15 AM |
3501 | return NULL; |
3502 | } | |
3503 | ||
721956f4 | 3504 | /* Init the stub hash table too. */ |
66eb6687 AM |
3505 | if (!bfd_hash_table_init (&htab->stub_hash_table, stub_hash_newfunc, |
3506 | sizeof (struct ppc_stub_hash_entry))) | |
721956f4 AM |
3507 | return NULL; |
3508 | ||
3509 | /* And the branch hash table. */ | |
66eb6687 AM |
3510 | if (!bfd_hash_table_init (&htab->branch_hash_table, branch_hash_newfunc, |
3511 | sizeof (struct ppc_branch_hash_entry))) | |
721956f4 AM |
3512 | return NULL; |
3513 | ||
3254fd24 AM |
3514 | /* Initializing two fields of the union is just cosmetic. We really |
3515 | only care about glist, but when compiled on a 32-bit host the | |
3516 | bfd_vma fields are larger. Setting the bfd_vma to zero makes | |
3517 | debugger inspection of these fields look nicer. */ | |
a6aa5195 AM |
3518 | htab->elf.init_got_refcount.refcount = 0; |
3519 | htab->elf.init_got_refcount.glist = NULL; | |
3520 | htab->elf.init_plt_refcount.refcount = 0; | |
3521 | htab->elf.init_plt_refcount.glist = NULL; | |
3522 | htab->elf.init_got_offset.offset = 0; | |
3523 | htab->elf.init_got_offset.glist = NULL; | |
3524 | htab->elf.init_plt_offset.offset = 0; | |
3525 | htab->elf.init_plt_offset.glist = NULL; | |
3254fd24 | 3526 | |
65f38f15 AM |
3527 | return &htab->elf.root; |
3528 | } | |
3529 | ||
721956f4 AM |
3530 | /* Free the derived linker hash table. */ |
3531 | ||
3532 | static void | |
4ce794b7 | 3533 | ppc64_elf_link_hash_table_free (struct bfd_link_hash_table *hash) |
721956f4 AM |
3534 | { |
3535 | struct ppc_link_hash_table *ret = (struct ppc_link_hash_table *) hash; | |
3536 | ||
3537 | bfd_hash_table_free (&ret->stub_hash_table); | |
3538 | bfd_hash_table_free (&ret->branch_hash_table); | |
3539 | _bfd_generic_link_hash_table_free (hash); | |
3540 | } | |
3541 | ||
e717da7e AM |
3542 | /* Satisfy the ELF linker by filling in some fields in our fake bfd. */ |
3543 | ||
3544 | void | |
3545 | ppc64_elf_init_stub_bfd (bfd *abfd, struct bfd_link_info *info) | |
3546 | { | |
3547 | struct ppc_link_hash_table *htab; | |
3548 | ||
3549 | elf_elfheader (abfd)->e_ident[EI_CLASS] = ELFCLASS64; | |
3550 | ||
3551 | /* Always hook our dynamic sections into the first bfd, which is the | |
3552 | linker created stub bfd. This ensures that the GOT header is at | |
3553 | the start of the output TOC section. */ | |
3554 | htab = ppc_hash_table (info); | |
3555 | htab->stub_bfd = abfd; | |
3556 | htab->elf.dynobj = abfd; | |
3557 | } | |
3558 | ||
721956f4 AM |
3559 | /* Build a name for an entry in the stub hash table. */ |
3560 | ||
3561 | static char * | |
4ce794b7 AM |
3562 | ppc_stub_name (const asection *input_section, |
3563 | const asection *sym_sec, | |
3564 | const struct ppc_link_hash_entry *h, | |
3565 | const Elf_Internal_Rela *rel) | |
721956f4 AM |
3566 | { |
3567 | char *stub_name; | |
3568 | bfd_size_type len; | |
3569 | ||
3570 | /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31 | |
3571 | offsets from a sym as a branch target? In fact, we could | |
3572 | probably assume the addend is always zero. */ | |
3573 | BFD_ASSERT (((int) rel->r_addend & 0xffffffff) == rel->r_addend); | |
3574 | ||
3575 | if (h) | |
3576 | { | |
3577 | len = 8 + 1 + strlen (h->elf.root.root.string) + 1 + 8 + 1; | |
3578 | stub_name = bfd_malloc (len); | |
46de2a7c AM |
3579 | if (stub_name == NULL) |
3580 | return stub_name; | |
3581 | ||
3582 | sprintf (stub_name, "%08x.%s+%x", | |
3583 | input_section->id & 0xffffffff, | |
3584 | h->elf.root.root.string, | |
3585 | (int) rel->r_addend & 0xffffffff); | |
721956f4 AM |
3586 | } |
3587 | else | |
3588 | { | |
ad8e1ba5 | 3589 | len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1; |
721956f4 | 3590 | stub_name = bfd_malloc (len); |
46de2a7c AM |
3591 | if (stub_name == NULL) |
3592 | return stub_name; | |
3593 | ||
3594 | sprintf (stub_name, "%08x.%x:%x+%x", | |
3595 | input_section->id & 0xffffffff, | |
3596 | sym_sec->id & 0xffffffff, | |
3597 | (int) ELF64_R_SYM (rel->r_info) & 0xffffffff, | |
3598 | (int) rel->r_addend & 0xffffffff); | |
721956f4 | 3599 | } |
ee75fd95 AM |
3600 | if (stub_name[len - 2] == '+' && stub_name[len - 1] == '0') |
3601 | stub_name[len - 2] = 0; | |
721956f4 AM |
3602 | return stub_name; |
3603 | } | |
3604 | ||
3605 | /* Look up an entry in the stub hash. Stub entries are cached because | |
3606 | creating the stub name takes a bit of time. */ | |
3607 | ||
3608 | static struct ppc_stub_hash_entry * | |
4ce794b7 AM |
3609 | ppc_get_stub_entry (const asection *input_section, |
3610 | const asection *sym_sec, | |
039b3fef | 3611 | struct ppc_link_hash_entry *h, |
4ce794b7 AM |
3612 | const Elf_Internal_Rela *rel, |
3613 | struct ppc_link_hash_table *htab) | |
721956f4 AM |
3614 | { |
3615 | struct ppc_stub_hash_entry *stub_entry; | |
721956f4 AM |
3616 | const asection *id_sec; |
3617 | ||
3618 | /* If this input section is part of a group of sections sharing one | |
3619 | stub section, then use the id of the first section in the group. | |
3620 | Stub names need to include a section id, as there may well be | |
3621 | more than one stub used to reach say, printf, and we need to | |
3622 | distinguish between them. */ | |
3623 | id_sec = htab->stub_group[input_section->id].link_sec; | |
3624 | ||
3625 | if (h != NULL && h->stub_cache != NULL | |
3626 | && h->stub_cache->h == h | |
3627 | && h->stub_cache->id_sec == id_sec) | |
3628 | { | |
3629 | stub_entry = h->stub_cache; | |
3630 | } | |
3631 | else | |
3632 | { | |
3633 | char *stub_name; | |
3634 | ||
3635 | stub_name = ppc_stub_name (id_sec, sym_sec, h, rel); | |
3636 | if (stub_name == NULL) | |
3637 | return NULL; | |
3638 | ||
3639 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, | |
b34976b6 | 3640 | stub_name, FALSE, FALSE); |
721956f4 AM |
3641 | if (h != NULL) |
3642 | h->stub_cache = stub_entry; | |
3643 | ||
3644 | free (stub_name); | |
3645 | } | |
3646 | ||
3647 | return stub_entry; | |
3648 | } | |
3649 | ||
3650 | /* Add a new stub entry to the stub hash. Not all fields of the new | |
3651 | stub entry are initialised. */ | |
3652 | ||
3653 | static struct ppc_stub_hash_entry * | |
4ce794b7 AM |
3654 | ppc_add_stub (const char *stub_name, |
3655 | asection *section, | |
3656 | struct ppc_link_hash_table *htab) | |
721956f4 AM |
3657 | { |
3658 | asection *link_sec; | |
3659 | asection *stub_sec; | |
3660 | struct ppc_stub_hash_entry *stub_entry; | |
3661 | ||
3662 | link_sec = htab->stub_group[section->id].link_sec; | |
3663 | stub_sec = htab->stub_group[section->id].stub_sec; | |
3664 | if (stub_sec == NULL) | |
3665 | { | |
3666 | stub_sec = htab->stub_group[link_sec->id].stub_sec; | |
3667 | if (stub_sec == NULL) | |
3668 | { | |
d4c88bbb | 3669 | size_t namelen; |
721956f4 AM |
3670 | bfd_size_type len; |
3671 | char *s_name; | |
3672 | ||
d4c88bbb AM |
3673 | namelen = strlen (link_sec->name); |
3674 | len = namelen + sizeof (STUB_SUFFIX); | |
721956f4 AM |
3675 | s_name = bfd_alloc (htab->stub_bfd, len); |
3676 | if (s_name == NULL) | |
3677 | return NULL; | |
3678 | ||
d4c88bbb AM |
3679 | memcpy (s_name, link_sec->name, namelen); |
3680 | memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX)); | |
721956f4 AM |
3681 | stub_sec = (*htab->add_stub_section) (s_name, link_sec); |
3682 | if (stub_sec == NULL) | |
3683 | return NULL; | |
3684 | htab->stub_group[link_sec->id].stub_sec = stub_sec; | |
3685 | } | |
3686 | htab->stub_group[section->id].stub_sec = stub_sec; | |
3687 | } | |
3688 | ||
3689 | /* Enter this entry into the linker stub hash table. */ | |
3690 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, stub_name, | |
b34976b6 | 3691 | TRUE, FALSE); |
721956f4 AM |
3692 | if (stub_entry == NULL) |
3693 | { | |
d003868e AM |
3694 | (*_bfd_error_handler) (_("%B: cannot create stub entry %s"), |
3695 | section->owner, stub_name); | |
721956f4 AM |
3696 | return NULL; |
3697 | } | |
3698 | ||
3699 | stub_entry->stub_sec = stub_sec; | |
3700 | stub_entry->stub_offset = 0; | |
3701 | stub_entry->id_sec = link_sec; | |
3702 | return stub_entry; | |
3703 | } | |
3704 | ||
82bd7b59 AM |
3705 | /* Create sections for linker generated code. */ |
3706 | ||
b34976b6 | 3707 | static bfd_boolean |
4ce794b7 | 3708 | create_linkage_sections (bfd *dynobj, struct bfd_link_info *info) |
82bd7b59 AM |
3709 | { |
3710 | struct ppc_link_hash_table *htab; | |
3711 | flagword flags; | |
3712 | ||
3713 | htab = ppc_hash_table (info); | |
3714 | ||
3715 | /* Create .sfpr for code to save and restore fp regs. */ | |
3716 | flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY | |
3717 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
3496cb2a L |
3718 | htab->sfpr = bfd_make_section_anyway_with_flags (dynobj, ".sfpr", |
3719 | flags); | |
82bd7b59 | 3720 | if (htab->sfpr == NULL |
82bd7b59 | 3721 | || ! bfd_set_section_alignment (dynobj, htab->sfpr, 2)) |
b34976b6 | 3722 | return FALSE; |
82bd7b59 | 3723 | |
721956f4 | 3724 | /* Create .glink for lazy dynamic linking support. */ |
3496cb2a L |
3725 | htab->glink = bfd_make_section_anyway_with_flags (dynobj, ".glink", |
3726 | flags); | |
4ce794b7 | 3727 | if (htab->glink == NULL |
4ce794b7 | 3728 | || ! bfd_set_section_alignment (dynobj, htab->glink, 2)) |
b34976b6 | 3729 | return FALSE; |
82bd7b59 | 3730 | |
c456f082 AM |
3731 | /* Create branch lookup table for plt_branch stubs. */ |
3732 | if (info->shared) | |
3733 | { | |
3734 | flags = (SEC_ALLOC | SEC_LOAD | |
3735 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
3736 | htab->brlt | |
3737 | = bfd_make_section_anyway_with_flags (dynobj, ".data.rel.ro.brlt", | |
3738 | flags); | |
3739 | } | |
3740 | else | |
3741 | { | |
3742 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | |
3743 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
3744 | htab->brlt | |
3745 | = bfd_make_section_anyway_with_flags (dynobj, ".rodata.brlt", flags); | |
3746 | } | |
3747 | ||
4ce794b7 | 3748 | if (htab->brlt == NULL |
4ce794b7 | 3749 | || ! bfd_set_section_alignment (dynobj, htab->brlt, 3)) |
b34976b6 | 3750 | return FALSE; |
721956f4 | 3751 | |
c456f082 | 3752 | if (info->shared) |
721956f4 AM |
3753 | { |
3754 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | |
3755 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
c456f082 AM |
3756 | htab->relbrlt |
3757 | = bfd_make_section_anyway_with_flags (dynobj, ".rela.data.rel.ro.brlt", | |
3758 | flags); | |
721956f4 | 3759 | } |
c456f082 AM |
3760 | else if (info->emitrelocations) |
3761 | { | |
3762 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | |
3763 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
3764 | htab->relbrlt | |
3765 | = bfd_make_section_anyway_with_flags (dynobj, ".rela.rodata.brlt", | |
3766 | flags); | |
3767 | } | |
3768 | else | |
3769 | return TRUE; | |
3770 | ||
3771 | if (!htab->relbrlt | |
3772 | || ! bfd_set_section_alignment (dynobj, htab->relbrlt, 3)) | |
3773 | return FALSE; | |
3774 | ||
b34976b6 | 3775 | return TRUE; |
82bd7b59 AM |
3776 | } |
3777 | ||
e717da7e AM |
3778 | /* Create .got and .rela.got sections in ABFD, and .got in dynobj if |
3779 | not already done. */ | |
65f38f15 | 3780 | |
b34976b6 | 3781 | static bfd_boolean |
e717da7e | 3782 | create_got_section (bfd *abfd, struct bfd_link_info *info) |
65f38f15 | 3783 | { |
e717da7e AM |
3784 | asection *got, *relgot; |
3785 | flagword flags; | |
3786 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
65f38f15 | 3787 | |
4ce794b7 | 3788 | if (!htab->got) |
e717da7e AM |
3789 | { |
3790 | if (! _bfd_elf_create_got_section (htab->elf.dynobj, info)) | |
3791 | return FALSE; | |
3792 | ||
3793 | htab->got = bfd_get_section_by_name (htab->elf.dynobj, ".got"); | |
3794 | if (!htab->got) | |
3795 | abort (); | |
3796 | } | |
3797 | ||
3798 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY | |
3799 | | SEC_LINKER_CREATED); | |
3800 | ||
c456f082 | 3801 | got = bfd_make_section_anyway_with_flags (abfd, ".got", flags); |
e717da7e | 3802 | if (!got |
e717da7e AM |
3803 | || !bfd_set_section_alignment (abfd, got, 3)) |
3804 | return FALSE; | |
65f38f15 | 3805 | |
c456f082 AM |
3806 | relgot = bfd_make_section_anyway_with_flags (abfd, ".rela.got", |
3807 | flags | SEC_READONLY); | |
e717da7e | 3808 | if (!relgot |
e717da7e | 3809 | || ! bfd_set_section_alignment (abfd, relgot, 3)) |
b34976b6 | 3810 | return FALSE; |
e717da7e AM |
3811 | |
3812 | ppc64_elf_tdata (abfd)->got = got; | |
3813 | ppc64_elf_tdata (abfd)->relgot = relgot; | |
b34976b6 | 3814 | return TRUE; |
65f38f15 | 3815 | } |
5bd4f169 | 3816 | |
82bd7b59 | 3817 | /* Create the dynamic sections, and set up shortcuts. */ |
5bd4f169 | 3818 | |
b34976b6 | 3819 | static bfd_boolean |
4ce794b7 | 3820 | ppc64_elf_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info) |
5bd4f169 | 3821 | { |
65f38f15 | 3822 | struct ppc_link_hash_table *htab; |
5bd4f169 | 3823 | |
65f38f15 | 3824 | if (!_bfd_elf_create_dynamic_sections (dynobj, info)) |
b34976b6 | 3825 | return FALSE; |
65f38f15 | 3826 | |
e717da7e AM |
3827 | htab = ppc_hash_table (info); |
3828 | if (!htab->got) | |
3829 | htab->got = bfd_get_section_by_name (dynobj, ".got"); | |
4ce794b7 AM |
3830 | htab->plt = bfd_get_section_by_name (dynobj, ".plt"); |
3831 | htab->relplt = bfd_get_section_by_name (dynobj, ".rela.plt"); | |
3832 | htab->dynbss = bfd_get_section_by_name (dynobj, ".dynbss"); | |
65f38f15 | 3833 | if (!info->shared) |
4ce794b7 | 3834 | htab->relbss = bfd_get_section_by_name (dynobj, ".rela.bss"); |
65f38f15 | 3835 | |
e717da7e | 3836 | if (!htab->got || !htab->plt || !htab->relplt || !htab->dynbss |
4ce794b7 | 3837 | || (!info->shared && !htab->relbss)) |
65f38f15 AM |
3838 | abort (); |
3839 | ||
b34976b6 | 3840 | return TRUE; |
5bd4f169 AM |
3841 | } |
3842 | ||
40d16e0b AM |
3843 | /* Merge PLT info on FROM with that on TO. */ |
3844 | ||
3845 | static void | |
3846 | move_plt_plist (struct ppc_link_hash_entry *from, | |
3847 | struct ppc_link_hash_entry *to) | |
3848 | { | |
3849 | if (from->elf.plt.plist != NULL) | |
3850 | { | |
3851 | if (to->elf.plt.plist != NULL) | |
3852 | { | |
3853 | struct plt_entry **entp; | |
3854 | struct plt_entry *ent; | |
3855 | ||
3856 | for (entp = &from->elf.plt.plist; (ent = *entp) != NULL; ) | |
3857 | { | |
3858 | struct plt_entry *dent; | |
3859 | ||
3860 | for (dent = to->elf.plt.plist; dent != NULL; dent = dent->next) | |
3861 | if (dent->addend == ent->addend) | |
3862 | { | |
3863 | dent->plt.refcount += ent->plt.refcount; | |
3864 | *entp = ent->next; | |
3865 | break; | |
3866 | } | |
3867 | if (dent == NULL) | |
3868 | entp = &ent->next; | |
3869 | } | |
3870 | *entp = to->elf.plt.plist; | |
3871 | } | |
3872 | ||
3873 | to->elf.plt.plist = from->elf.plt.plist; | |
3874 | from->elf.plt.plist = NULL; | |
3875 | } | |
3876 | } | |
3877 | ||
65f38f15 AM |
3878 | /* Copy the extra info we tack onto an elf_link_hash_entry. */ |
3879 | ||
3880 | static void | |
fcfa13d2 AM |
3881 | ppc64_elf_copy_indirect_symbol (struct bfd_link_info *info, |
3882 | struct elf_link_hash_entry *dir, | |
3883 | struct elf_link_hash_entry *ind) | |
65f38f15 AM |
3884 | { |
3885 | struct ppc_link_hash_entry *edir, *eind; | |
3886 | ||
3887 | edir = (struct ppc_link_hash_entry *) dir; | |
3888 | eind = (struct ppc_link_hash_entry *) ind; | |
3889 | ||
411e1bfb | 3890 | /* Copy over any dynamic relocs we may have on the indirect sym. */ |
bbd7ec4a | 3891 | if (eind->dyn_relocs != NULL) |
65f38f15 | 3892 | { |
bbd7ec4a AM |
3893 | if (edir->dyn_relocs != NULL) |
3894 | { | |
3895 | struct ppc_dyn_relocs **pp; | |
3896 | struct ppc_dyn_relocs *p; | |
3897 | ||
fcfa13d2 | 3898 | /* Add reloc counts against the indirect sym to the direct sym |
bbd7ec4a AM |
3899 | list. Merge any entries against the same section. */ |
3900 | for (pp = &eind->dyn_relocs; (p = *pp) != NULL; ) | |
3901 | { | |
3902 | struct ppc_dyn_relocs *q; | |
3903 | ||
3904 | for (q = edir->dyn_relocs; q != NULL; q = q->next) | |
3905 | if (q->sec == p->sec) | |
3906 | { | |
3907 | q->pc_count += p->pc_count; | |
3908 | q->count += p->count; | |
3909 | *pp = p->next; | |
3910 | break; | |
3911 | } | |
3912 | if (q == NULL) | |
3913 | pp = &p->next; | |
3914 | } | |
3915 | *pp = edir->dyn_relocs; | |
3916 | } | |
3917 | ||
65f38f15 AM |
3918 | edir->dyn_relocs = eind->dyn_relocs; |
3919 | eind->dyn_relocs = NULL; | |
3920 | } | |
65f38f15 | 3921 | |
6349e628 AM |
3922 | edir->is_func |= eind->is_func; |
3923 | edir->is_func_descriptor |= eind->is_func_descriptor; | |
58ac9f71 | 3924 | edir->tls_mask |= eind->tls_mask; |
6349e628 | 3925 | |
81848ca0 | 3926 | /* If called to transfer flags for a weakdef during processing |
f5385ebf | 3927 | of elf_adjust_dynamic_symbol, don't copy NON_GOT_REF. |
81848ca0 | 3928 | We clear it ourselves for ELIMINATE_COPY_RELOCS. */ |
f5385ebf AM |
3929 | if (!(ELIMINATE_COPY_RELOCS |
3930 | && eind->elf.root.type != bfd_link_hash_indirect | |
3931 | && edir->elf.dynamic_adjusted)) | |
3932 | edir->elf.non_got_ref |= eind->elf.non_got_ref; | |
81848ca0 | 3933 | |
f5385ebf AM |
3934 | edir->elf.ref_dynamic |= eind->elf.ref_dynamic; |
3935 | edir->elf.ref_regular |= eind->elf.ref_regular; | |
3936 | edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak; | |
3937 | edir->elf.needs_plt |= eind->elf.needs_plt; | |
6349e628 AM |
3938 | |
3939 | /* If we were called to copy over info for a weak sym, that's all. */ | |
3940 | if (eind->elf.root.type != bfd_link_hash_indirect) | |
3941 | return; | |
3942 | ||
81848ca0 AM |
3943 | /* Copy over got entries that we may have already seen to the |
3944 | symbol which just became indirect. */ | |
411e1bfb AM |
3945 | if (eind->elf.got.glist != NULL) |
3946 | { | |
3947 | if (edir->elf.got.glist != NULL) | |
3948 | { | |
3949 | struct got_entry **entp; | |
3950 | struct got_entry *ent; | |
3951 | ||
3952 | for (entp = &eind->elf.got.glist; (ent = *entp) != NULL; ) | |
3953 | { | |
3954 | struct got_entry *dent; | |
3955 | ||
3956 | for (dent = edir->elf.got.glist; dent != NULL; dent = dent->next) | |
3957 | if (dent->addend == ent->addend | |
e717da7e | 3958 | && dent->owner == ent->owner |
411e1bfb AM |
3959 | && dent->tls_type == ent->tls_type) |
3960 | { | |
3961 | dent->got.refcount += ent->got.refcount; | |
3962 | *entp = ent->next; | |
3963 | break; | |
3964 | } | |
3965 | if (dent == NULL) | |
3966 | entp = &ent->next; | |
3967 | } | |
3968 | *entp = edir->elf.got.glist; | |
3969 | } | |
3970 | ||
3971 | edir->elf.got.glist = eind->elf.got.glist; | |
3972 | eind->elf.got.glist = NULL; | |
3973 | } | |
3974 | ||
3975 | /* And plt entries. */ | |
40d16e0b | 3976 | move_plt_plist (eind, edir); |
411e1bfb | 3977 | |
fcfa13d2 | 3978 | if (eind->elf.dynindx != -1) |
411e1bfb | 3979 | { |
fcfa13d2 AM |
3980 | if (edir->elf.dynindx != -1) |
3981 | _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr, | |
3982 | edir->elf.dynstr_index); | |
411e1bfb AM |
3983 | edir->elf.dynindx = eind->elf.dynindx; |
3984 | edir->elf.dynstr_index = eind->elf.dynstr_index; | |
3985 | eind->elf.dynindx = -1; | |
3986 | eind->elf.dynstr_index = 0; | |
3987 | } | |
411e1bfb AM |
3988 | } |
3989 | ||
8387904d AM |
3990 | /* Find the function descriptor hash entry from the given function code |
3991 | hash entry FH. Link the entries via their OH fields. */ | |
3992 | ||
3993 | static struct ppc_link_hash_entry * | |
3994 | get_fdh (struct ppc_link_hash_entry *fh, struct ppc_link_hash_table *htab) | |
3995 | { | |
3996 | struct ppc_link_hash_entry *fdh = fh->oh; | |
3997 | ||
3998 | if (fdh == NULL) | |
3999 | { | |
4000 | const char *fd_name = fh->elf.root.root.string + 1; | |
4001 | ||
4002 | fdh = (struct ppc_link_hash_entry *) | |
4003 | elf_link_hash_lookup (&htab->elf, fd_name, FALSE, FALSE, FALSE); | |
4004 | if (fdh != NULL) | |
4005 | { | |
4006 | fdh->is_func_descriptor = 1; | |
4007 | fdh->oh = fh; | |
4008 | fh->is_func = 1; | |
4009 | fh->oh = fdh; | |
4010 | } | |
4011 | } | |
4012 | ||
4013 | return fdh; | |
4014 | } | |
4015 | ||
bb700d78 AM |
4016 | /* Make a fake function descriptor sym for the code sym FH. */ |
4017 | ||
4018 | static struct ppc_link_hash_entry * | |
4019 | make_fdh (struct bfd_link_info *info, | |
908b32fc | 4020 | struct ppc_link_hash_entry *fh) |
bb700d78 AM |
4021 | { |
4022 | bfd *abfd; | |
4023 | asymbol *newsym; | |
4024 | struct bfd_link_hash_entry *bh; | |
4025 | struct ppc_link_hash_entry *fdh; | |
4026 | ||
4027 | abfd = fh->elf.root.u.undef.abfd; | |
4028 | newsym = bfd_make_empty_symbol (abfd); | |
4029 | newsym->name = fh->elf.root.root.string + 1; | |
4030 | newsym->section = bfd_und_section_ptr; | |
4031 | newsym->value = 0; | |
908b32fc | 4032 | newsym->flags = BSF_WEAK; |
bb700d78 AM |
4033 | |
4034 | bh = NULL; | |
4035 | if (!_bfd_generic_link_add_one_symbol (info, abfd, newsym->name, | |
4036 | newsym->flags, newsym->section, | |
4037 | newsym->value, NULL, FALSE, FALSE, | |
4038 | &bh)) | |
4039 | return NULL; | |
4040 | ||
4041 | fdh = (struct ppc_link_hash_entry *) bh; | |
4042 | fdh->elf.non_elf = 0; | |
908b32fc AM |
4043 | fdh->fake = 1; |
4044 | fdh->is_func_descriptor = 1; | |
4045 | fdh->oh = fh; | |
4046 | fh->is_func = 1; | |
4047 | fh->oh = fdh; | |
bb700d78 AM |
4048 | return fdh; |
4049 | } | |
4050 | ||
8387904d AM |
4051 | /* Hacks to support old ABI code. |
4052 | When making function calls, old ABI code references function entry | |
4053 | points (dot symbols), while new ABI code references the function | |
4054 | descriptor symbol. We need to make any combination of reference and | |
4055 | definition work together, without breaking archive linking. | |
4056 | ||
4057 | For a defined function "foo" and an undefined call to "bar": | |
4058 | An old object defines "foo" and ".foo", references ".bar" (possibly | |
4059 | "bar" too). | |
4060 | A new object defines "foo" and references "bar". | |
4061 | ||
4062 | A new object thus has no problem with its undefined symbols being | |
4063 | satisfied by definitions in an old object. On the other hand, the | |
4064 | old object won't have ".bar" satisfied by a new object. */ | |
4065 | ||
4066 | /* Fix function descriptor symbols defined in .opd sections to be | |
4067 | function type. */ | |
555cd476 AM |
4068 | |
4069 | static bfd_boolean | |
433817dd | 4070 | ppc64_elf_add_symbol_hook (bfd *ibfd, |
555cd476 AM |
4071 | struct bfd_link_info *info ATTRIBUTE_UNUSED, |
4072 | Elf_Internal_Sym *isym, | |
433817dd | 4073 | const char **name, |
555cd476 AM |
4074 | flagword *flags ATTRIBUTE_UNUSED, |
4075 | asection **sec, | |
4076 | bfd_vma *value ATTRIBUTE_UNUSED) | |
4077 | { | |
8843416a AM |
4078 | if (*sec != NULL |
4079 | && strcmp (bfd_get_section_name (ibfd, *sec), ".opd") == 0) | |
555cd476 | 4080 | isym->st_info = ELF_ST_INFO (ELF_ST_BIND (isym->st_info), STT_FUNC); |
433817dd AM |
4081 | |
4082 | if ((*name)[0] == '.' | |
4083 | && ELF_ST_BIND (isym->st_info) == STB_GLOBAL | |
4084 | && ELF_ST_TYPE (isym->st_info) < STT_SECTION | |
4085 | && is_ppc64_elf_target (ibfd->xvec)) | |
4086 | ppc64_elf_tdata (ibfd)->u.has_dotsym = 1; | |
4087 | ||
555cd476 AM |
4088 | return TRUE; |
4089 | } | |
4090 | ||
8387904d | 4091 | /* This function makes an old ABI object reference to ".bar" cause the |
908b32fc AM |
4092 | inclusion of a new ABI object archive that defines "bar". |
4093 | NAME is a symbol defined in an archive. Return a symbol in the hash | |
4094 | table that might be satisfied by the archive symbols. */ | |
8387904d AM |
4095 | |
4096 | static struct elf_link_hash_entry * | |
4097 | ppc64_elf_archive_symbol_lookup (bfd *abfd, | |
4098 | struct bfd_link_info *info, | |
4099 | const char *name) | |
4100 | { | |
4101 | struct elf_link_hash_entry *h; | |
4102 | char *dot_name; | |
4103 | size_t len; | |
4104 | ||
4105 | h = _bfd_elf_archive_symbol_lookup (abfd, info, name); | |
908b32fc AM |
4106 | if (h != NULL |
4107 | /* Don't return this sym if it is a fake function descriptor | |
4108 | created by add_symbol_adjust. */ | |
4109 | && !(h->root.type == bfd_link_hash_undefweak | |
4110 | && ((struct ppc_link_hash_entry *) h)->fake)) | |
8387904d AM |
4111 | return h; |
4112 | ||
4113 | if (name[0] == '.') | |
4114 | return h; | |
4115 | ||
4116 | len = strlen (name); | |
4117 | dot_name = bfd_alloc (abfd, len + 2); | |
4118 | if (dot_name == NULL) | |
4119 | return (struct elf_link_hash_entry *) 0 - 1; | |
4120 | dot_name[0] = '.'; | |
4121 | memcpy (dot_name + 1, name, len + 1); | |
4122 | h = _bfd_elf_archive_symbol_lookup (abfd, info, dot_name); | |
4123 | bfd_release (abfd, dot_name); | |
4124 | return h; | |
4125 | } | |
4126 | ||
4127 | /* This function satisfies all old ABI object references to ".bar" if a | |
99877b66 AM |
4128 | new ABI object defines "bar". Well, at least, undefined dot symbols |
4129 | are made weak. This stops later archive searches from including an | |
4130 | object if we already have a function descriptor definition. It also | |
35b0ce59 AM |
4131 | prevents the linker complaining about undefined symbols. |
4132 | We also check and correct mismatched symbol visibility here. The | |
4133 | most restrictive visibility of the function descriptor and the | |
4134 | function entry symbol is used. */ | |
8387904d | 4135 | |
bb700d78 AM |
4136 | struct add_symbol_adjust_data |
4137 | { | |
4138 | struct bfd_link_info *info; | |
4139 | bfd_boolean ok; | |
4140 | }; | |
4141 | ||
8387904d AM |
4142 | static bfd_boolean |
4143 | add_symbol_adjust (struct elf_link_hash_entry *h, void *inf) | |
4144 | { | |
bb700d78 | 4145 | struct add_symbol_adjust_data *data; |
8387904d | 4146 | struct ppc_link_hash_table *htab; |
99877b66 | 4147 | struct ppc_link_hash_entry *eh; |
8387904d AM |
4148 | struct ppc_link_hash_entry *fdh; |
4149 | ||
4150 | if (h->root.type == bfd_link_hash_indirect) | |
4151 | return TRUE; | |
4152 | ||
4153 | if (h->root.type == bfd_link_hash_warning) | |
4154 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
4155 | ||
35b0ce59 | 4156 | if (h->root.root.string[0] != '.') |
8387904d AM |
4157 | return TRUE; |
4158 | ||
bb700d78 AM |
4159 | data = inf; |
4160 | htab = ppc_hash_table (data->info); | |
99877b66 AM |
4161 | eh = (struct ppc_link_hash_entry *) h; |
4162 | fdh = get_fdh (eh, htab); | |
bb700d78 | 4163 | if (fdh == NULL |
c4f68ce3 | 4164 | && !data->info->relocatable |
bb700d78 AM |
4165 | && (eh->elf.root.type == bfd_link_hash_undefined |
4166 | || eh->elf.root.type == bfd_link_hash_undefweak) | |
4167 | && eh->elf.ref_regular) | |
4168 | { | |
4169 | /* Make an undefweak function descriptor sym, which is enough to | |
4170 | pull in an --as-needed shared lib, but won't cause link | |
4171 | errors. Archives are handled elsewhere. */ | |
908b32fc | 4172 | fdh = make_fdh (data->info, eh); |
bb700d78 AM |
4173 | if (fdh == NULL) |
4174 | data->ok = FALSE; | |
4175 | else | |
4176 | fdh->elf.ref_regular = 1; | |
4177 | } | |
e87d886e | 4178 | else if (fdh != NULL) |
8387904d | 4179 | { |
35b0ce59 AM |
4180 | unsigned entry_vis = ELF_ST_VISIBILITY (eh->elf.other) - 1; |
4181 | unsigned descr_vis = ELF_ST_VISIBILITY (fdh->elf.other) - 1; | |
4182 | if (entry_vis < descr_vis) | |
4183 | fdh->elf.other += entry_vis - descr_vis; | |
4184 | else if (entry_vis > descr_vis) | |
4185 | eh->elf.other += descr_vis - entry_vis; | |
4186 | ||
e87d886e AM |
4187 | if ((fdh->elf.root.type == bfd_link_hash_defined |
4188 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
4189 | && eh->elf.root.type == bfd_link_hash_undefined) | |
35b0ce59 AM |
4190 | { |
4191 | eh->elf.root.type = bfd_link_hash_undefweak; | |
4192 | eh->was_undefined = 1; | |
4193 | htab->twiddled_syms = 1; | |
4194 | } | |
8387904d | 4195 | } |
99877b66 | 4196 | |
8387904d AM |
4197 | return TRUE; |
4198 | } | |
4199 | ||
4200 | static bfd_boolean | |
433817dd | 4201 | ppc64_elf_check_directives (bfd *abfd, struct bfd_link_info *info) |
8387904d | 4202 | { |
99877b66 | 4203 | struct ppc_link_hash_table *htab; |
bb700d78 | 4204 | struct add_symbol_adjust_data data; |
99877b66 | 4205 | |
433817dd AM |
4206 | if (!is_ppc64_elf_target (abfd->xvec)) |
4207 | return TRUE; | |
4208 | ||
4209 | if (!ppc64_elf_tdata (abfd)->u.has_dotsym) | |
4210 | return TRUE; | |
4211 | ppc64_elf_tdata (abfd)->u.deleted_section = NULL; | |
4212 | ||
99877b66 | 4213 | htab = ppc_hash_table (info); |
ee75fd95 | 4214 | if (!is_ppc64_elf_target (htab->elf.root.creator)) |
35b0ce59 AM |
4215 | return TRUE; |
4216 | ||
bb700d78 AM |
4217 | data.info = info; |
4218 | data.ok = TRUE; | |
4219 | elf_link_hash_traverse (&htab->elf, add_symbol_adjust, &data); | |
99877b66 AM |
4220 | |
4221 | /* We need to fix the undefs list for any syms we have twiddled to | |
4222 | undef_weak. */ | |
4223 | if (htab->twiddled_syms) | |
4224 | { | |
77cfaee6 | 4225 | bfd_link_repair_undef_list (&htab->elf.root); |
99877b66 AM |
4226 | htab->twiddled_syms = 0; |
4227 | } | |
bb700d78 | 4228 | return data.ok; |
8387904d AM |
4229 | } |
4230 | ||
411e1bfb | 4231 | static bfd_boolean |
4ce794b7 AM |
4232 | update_local_sym_info (bfd *abfd, Elf_Internal_Shdr *symtab_hdr, |
4233 | unsigned long r_symndx, bfd_vma r_addend, int tls_type) | |
411e1bfb AM |
4234 | { |
4235 | struct got_entry **local_got_ents = elf_local_got_ents (abfd); | |
e7b938ca | 4236 | char *local_got_tls_masks; |
411e1bfb AM |
4237 | |
4238 | if (local_got_ents == NULL) | |
4239 | { | |
4240 | bfd_size_type size = symtab_hdr->sh_info; | |
4241 | ||
e7b938ca | 4242 | size *= sizeof (*local_got_ents) + sizeof (*local_got_tls_masks); |
4ce794b7 | 4243 | local_got_ents = bfd_zalloc (abfd, size); |
411e1bfb AM |
4244 | if (local_got_ents == NULL) |
4245 | return FALSE; | |
4246 | elf_local_got_ents (abfd) = local_got_ents; | |
4247 | } | |
4248 | ||
4249 | if ((tls_type & TLS_EXPLICIT) == 0) | |
4250 | { | |
4251 | struct got_entry *ent; | |
4252 | ||
4253 | for (ent = local_got_ents[r_symndx]; ent != NULL; ent = ent->next) | |
e717da7e AM |
4254 | if (ent->addend == r_addend |
4255 | && ent->owner == abfd | |
4256 | && ent->tls_type == tls_type) | |
411e1bfb AM |
4257 | break; |
4258 | if (ent == NULL) | |
4259 | { | |
4260 | bfd_size_type amt = sizeof (*ent); | |
4ce794b7 | 4261 | ent = bfd_alloc (abfd, amt); |
411e1bfb AM |
4262 | if (ent == NULL) |
4263 | return FALSE; | |
4264 | ent->next = local_got_ents[r_symndx]; | |
4265 | ent->addend = r_addend; | |
e717da7e | 4266 | ent->owner = abfd; |
411e1bfb AM |
4267 | ent->tls_type = tls_type; |
4268 | ent->got.refcount = 0; | |
4269 | local_got_ents[r_symndx] = ent; | |
4270 | } | |
4271 | ent->got.refcount += 1; | |
4272 | } | |
4273 | ||
e7b938ca AM |
4274 | local_got_tls_masks = (char *) (local_got_ents + symtab_hdr->sh_info); |
4275 | local_got_tls_masks[r_symndx] |= tls_type; | |
411e1bfb | 4276 | return TRUE; |
65f38f15 AM |
4277 | } |
4278 | ||
411e1bfb | 4279 | static bfd_boolean |
4ce794b7 | 4280 | update_plt_info (bfd *abfd, struct ppc_link_hash_entry *eh, bfd_vma addend) |
1e2f5b6e | 4281 | { |
411e1bfb | 4282 | struct plt_entry *ent; |
1e2f5b6e | 4283 | |
411e1bfb AM |
4284 | for (ent = eh->elf.plt.plist; ent != NULL; ent = ent->next) |
4285 | if (ent->addend == addend) | |
4286 | break; | |
4287 | if (ent == NULL) | |
1e2f5b6e | 4288 | { |
411e1bfb | 4289 | bfd_size_type amt = sizeof (*ent); |
4ce794b7 | 4290 | ent = bfd_alloc (abfd, amt); |
411e1bfb AM |
4291 | if (ent == NULL) |
4292 | return FALSE; | |
4293 | ent->next = eh->elf.plt.plist; | |
4294 | ent->addend = addend; | |
4295 | ent->plt.refcount = 0; | |
4296 | eh->elf.plt.plist = ent; | |
1e2f5b6e | 4297 | } |
411e1bfb | 4298 | ent->plt.refcount += 1; |
f5385ebf | 4299 | eh->elf.needs_plt = 1; |
93f3fa99 AM |
4300 | if (eh->elf.root.root.string[0] == '.' |
4301 | && eh->elf.root.root.string[1] != '\0') | |
4302 | eh->is_func = 1; | |
b34976b6 | 4303 | return TRUE; |
1e2f5b6e AM |
4304 | } |
4305 | ||
5bd4f169 | 4306 | /* Look through the relocs for a section during the first phase, and |
65f38f15 | 4307 | calculate needed space in the global offset table, procedure |
5d1634d7 | 4308 | linkage table, and dynamic reloc sections. */ |
5bd4f169 | 4309 | |
b34976b6 | 4310 | static bfd_boolean |
4ce794b7 AM |
4311 | ppc64_elf_check_relocs (bfd *abfd, struct bfd_link_info *info, |
4312 | asection *sec, const Elf_Internal_Rela *relocs) | |
5bd4f169 | 4313 | { |
65f38f15 | 4314 | struct ppc_link_hash_table *htab; |
5bd4f169 AM |
4315 | Elf_Internal_Shdr *symtab_hdr; |
4316 | struct elf_link_hash_entry **sym_hashes, **sym_hashes_end; | |
4317 | const Elf_Internal_Rela *rel; | |
4318 | const Elf_Internal_Rela *rel_end; | |
5bd4f169 | 4319 | asection *sreloc; |
1e2f5b6e | 4320 | asection **opd_sym_map; |
5bd4f169 | 4321 | |
1049f94e | 4322 | if (info->relocatable) |
b34976b6 | 4323 | return TRUE; |
5bd4f169 | 4324 | |
680a3378 AM |
4325 | /* Don't do anything special with non-loaded, non-alloced sections. |
4326 | In particular, any relocs in such sections should not affect GOT | |
4327 | and PLT reference counting (ie. we don't allow them to create GOT | |
4328 | or PLT entries), there's no possibility or desire to optimize TLS | |
4329 | relocs, and there's not much point in propagating relocs to shared | |
4330 | libs that the dynamic linker won't relocate. */ | |
4331 | if ((sec->flags & SEC_ALLOC) == 0) | |
4332 | return TRUE; | |
4333 | ||
65f38f15 | 4334 | htab = ppc_hash_table (info); |
5bd4f169 | 4335 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
5bd4f169 AM |
4336 | |
4337 | sym_hashes = elf_sym_hashes (abfd); | |
4338 | sym_hashes_end = (sym_hashes | |
1e2f5b6e AM |
4339 | + symtab_hdr->sh_size / sizeof (Elf64_External_Sym) |
4340 | - symtab_hdr->sh_info); | |
5bd4f169 AM |
4341 | |
4342 | sreloc = NULL; | |
1e2f5b6e AM |
4343 | opd_sym_map = NULL; |
4344 | if (strcmp (bfd_get_section_name (abfd, sec), ".opd") == 0) | |
4345 | { | |
4346 | /* Garbage collection needs some extra help with .opd sections. | |
4347 | We don't want to necessarily keep everything referenced by | |
4348 | relocs in .opd, as that would keep all functions. Instead, | |
4349 | if we reference an .opd symbol (a function descriptor), we | |
4350 | want to keep the function code symbol's section. This is | |
4351 | easy for global symbols, but for local syms we need to keep | |
4352 | information about the associated function section. Later, if | |
4353 | edit_opd deletes entries, we'll use this array to adjust | |
4354 | local syms in .opd. */ | |
4355 | union opd_info { | |
4356 | asection *func_section; | |
4357 | long entry_adjust; | |
4358 | }; | |
4359 | bfd_size_type amt; | |
4360 | ||
3f764659 | 4361 | amt = sec->size * sizeof (union opd_info) / 8; |
4ce794b7 | 4362 | opd_sym_map = bfd_zalloc (abfd, amt); |
1e2f5b6e | 4363 | if (opd_sym_map == NULL) |
b34976b6 | 4364 | return FALSE; |
f0abc2a1 | 4365 | ppc64_elf_section_data (sec)->opd.func_sec = opd_sym_map; |
1e2f5b6e | 4366 | } |
5bd4f169 | 4367 | |
82bd7b59 AM |
4368 | if (htab->sfpr == NULL |
4369 | && !create_linkage_sections (htab->elf.dynobj, info)) | |
b34976b6 | 4370 | return FALSE; |
82bd7b59 | 4371 | |
5bd4f169 AM |
4372 | rel_end = relocs + sec->reloc_count; |
4373 | for (rel = relocs; rel < rel_end; rel++) | |
4374 | { | |
4375 | unsigned long r_symndx; | |
4376 | struct elf_link_hash_entry *h; | |
04c9666a | 4377 | enum elf_ppc64_reloc_type r_type; |
411e1bfb | 4378 | int tls_type = 0; |
5bd4f169 AM |
4379 | |
4380 | r_symndx = ELF64_R_SYM (rel->r_info); | |
4381 | if (r_symndx < symtab_hdr->sh_info) | |
4382 | h = NULL; | |
4383 | else | |
973a3492 L |
4384 | { |
4385 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
4386 | while (h->root.type == bfd_link_hash_indirect | |
4387 | || h->root.type == bfd_link_hash_warning) | |
4388 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
4389 | } | |
5bd4f169 | 4390 | |
4ce794b7 | 4391 | r_type = ELF64_R_TYPE (rel->r_info); |
a33d1f77 | 4392 | switch (r_type) |
5bd4f169 | 4393 | { |
411e1bfb AM |
4394 | case R_PPC64_GOT_TLSLD16: |
4395 | case R_PPC64_GOT_TLSLD16_LO: | |
4396 | case R_PPC64_GOT_TLSLD16_HI: | |
4397 | case R_PPC64_GOT_TLSLD16_HA: | |
e717da7e | 4398 | ppc64_tlsld_got (abfd)->refcount += 1; |
951fd09b | 4399 | tls_type = TLS_TLS | TLS_LD; |
411e1bfb AM |
4400 | goto dogottls; |
4401 | ||
4402 | case R_PPC64_GOT_TLSGD16: | |
4403 | case R_PPC64_GOT_TLSGD16_LO: | |
4404 | case R_PPC64_GOT_TLSGD16_HI: | |
4405 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b | 4406 | tls_type = TLS_TLS | TLS_GD; |
411e1bfb AM |
4407 | goto dogottls; |
4408 | ||
4409 | case R_PPC64_GOT_TPREL16_DS: | |
4410 | case R_PPC64_GOT_TPREL16_LO_DS: | |
4411 | case R_PPC64_GOT_TPREL16_HI: | |
4412 | case R_PPC64_GOT_TPREL16_HA: | |
4413 | if (info->shared) | |
4414 | info->flags |= DF_STATIC_TLS; | |
4415 | tls_type = TLS_TLS | TLS_TPREL; | |
4416 | goto dogottls; | |
4417 | ||
4418 | case R_PPC64_GOT_DTPREL16_DS: | |
4419 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
4420 | case R_PPC64_GOT_DTPREL16_HI: | |
4421 | case R_PPC64_GOT_DTPREL16_HA: | |
4422 | tls_type = TLS_TLS | TLS_DTPREL; | |
4423 | dogottls: | |
4424 | sec->has_tls_reloc = 1; | |
4425 | /* Fall thru */ | |
4426 | ||
5bd4f169 | 4427 | case R_PPC64_GOT16: |
5bd4f169 | 4428 | case R_PPC64_GOT16_DS: |
65f38f15 AM |
4429 | case R_PPC64_GOT16_HA: |
4430 | case R_PPC64_GOT16_HI: | |
4431 | case R_PPC64_GOT16_LO: | |
5bd4f169 | 4432 | case R_PPC64_GOT16_LO_DS: |
65f38f15 | 4433 | /* This symbol requires a global offset table entry. */ |
4c52953f | 4434 | sec->has_toc_reloc = 1; |
e717da7e AM |
4435 | if (ppc64_elf_tdata (abfd)->got == NULL |
4436 | && !create_got_section (abfd, info)) | |
b34976b6 | 4437 | return FALSE; |
5bd4f169 AM |
4438 | |
4439 | if (h != NULL) | |
4440 | { | |
411e1bfb AM |
4441 | struct ppc_link_hash_entry *eh; |
4442 | struct got_entry *ent; | |
65f38f15 | 4443 | |
411e1bfb AM |
4444 | eh = (struct ppc_link_hash_entry *) h; |
4445 | for (ent = eh->elf.got.glist; ent != NULL; ent = ent->next) | |
4446 | if (ent->addend == rel->r_addend | |
e717da7e | 4447 | && ent->owner == abfd |
411e1bfb AM |
4448 | && ent->tls_type == tls_type) |
4449 | break; | |
4450 | if (ent == NULL) | |
5bd4f169 | 4451 | { |
411e1bfb | 4452 | bfd_size_type amt = sizeof (*ent); |
4ce794b7 | 4453 | ent = bfd_alloc (abfd, amt); |
411e1bfb | 4454 | if (ent == NULL) |
b34976b6 | 4455 | return FALSE; |
411e1bfb AM |
4456 | ent->next = eh->elf.got.glist; |
4457 | ent->addend = rel->r_addend; | |
e717da7e | 4458 | ent->owner = abfd; |
411e1bfb AM |
4459 | ent->tls_type = tls_type; |
4460 | ent->got.refcount = 0; | |
4461 | eh->elf.got.glist = ent; | |
5bd4f169 | 4462 | } |
411e1bfb | 4463 | ent->got.refcount += 1; |
e7b938ca | 4464 | eh->tls_mask |= tls_type; |
5bd4f169 | 4465 | } |
411e1bfb AM |
4466 | else |
4467 | /* This is a global offset table entry for a local symbol. */ | |
4468 | if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
4469 | rel->r_addend, tls_type)) | |
4470 | return FALSE; | |
5bd4f169 AM |
4471 | break; |
4472 | ||
5bd4f169 | 4473 | case R_PPC64_PLT16_HA: |
65f38f15 AM |
4474 | case R_PPC64_PLT16_HI: |
4475 | case R_PPC64_PLT16_LO: | |
4476 | case R_PPC64_PLT32: | |
4477 | case R_PPC64_PLT64: | |
5bd4f169 | 4478 | /* This symbol requires a procedure linkage table entry. We |
3fad3c7c AM |
4479 | actually build the entry in adjust_dynamic_symbol, |
4480 | because this might be a case of linking PIC code without | |
4481 | linking in any dynamic objects, in which case we don't | |
4482 | need to generate a procedure linkage table after all. */ | |
5bd4f169 AM |
4483 | if (h == NULL) |
4484 | { | |
4485 | /* It does not make sense to have a procedure linkage | |
3fad3c7c | 4486 | table entry for a local symbol. */ |
5bd4f169 | 4487 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 4488 | return FALSE; |
5bd4f169 | 4489 | } |
411e1bfb AM |
4490 | else |
4491 | if (!update_plt_info (abfd, (struct ppc_link_hash_entry *) h, | |
4492 | rel->r_addend)) | |
4493 | return FALSE; | |
5bd4f169 AM |
4494 | break; |
4495 | ||
4496 | /* The following relocations don't need to propagate the | |
4497 | relocation if linking a shared object since they are | |
4498 | section relative. */ | |
4499 | case R_PPC64_SECTOFF: | |
4500 | case R_PPC64_SECTOFF_LO: | |
4501 | case R_PPC64_SECTOFF_HI: | |
4502 | case R_PPC64_SECTOFF_HA: | |
4503 | case R_PPC64_SECTOFF_DS: | |
4504 | case R_PPC64_SECTOFF_LO_DS: | |
411e1bfb AM |
4505 | case R_PPC64_DTPREL16: |
4506 | case R_PPC64_DTPREL16_LO: | |
4507 | case R_PPC64_DTPREL16_HI: | |
4508 | case R_PPC64_DTPREL16_HA: | |
4509 | case R_PPC64_DTPREL16_DS: | |
4510 | case R_PPC64_DTPREL16_LO_DS: | |
4511 | case R_PPC64_DTPREL16_HIGHER: | |
4512 | case R_PPC64_DTPREL16_HIGHERA: | |
4513 | case R_PPC64_DTPREL16_HIGHEST: | |
4514 | case R_PPC64_DTPREL16_HIGHESTA: | |
5bd4f169 AM |
4515 | break; |
4516 | ||
ad8e1ba5 AM |
4517 | /* Nor do these. */ |
4518 | case R_PPC64_TOC16: | |
4519 | case R_PPC64_TOC16_LO: | |
4520 | case R_PPC64_TOC16_HI: | |
4521 | case R_PPC64_TOC16_HA: | |
4522 | case R_PPC64_TOC16_DS: | |
4523 | case R_PPC64_TOC16_LO_DS: | |
4c52953f | 4524 | sec->has_toc_reloc = 1; |
ad8e1ba5 AM |
4525 | break; |
4526 | ||
5bd4f169 AM |
4527 | /* This relocation describes the C++ object vtable hierarchy. |
4528 | Reconstruct it for later use during GC. */ | |
4529 | case R_PPC64_GNU_VTINHERIT: | |
c152c796 | 4530 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
b34976b6 | 4531 | return FALSE; |
5bd4f169 AM |
4532 | break; |
4533 | ||
4534 | /* This relocation describes which C++ vtable entries are actually | |
4535 | used. Record for later use during GC. */ | |
4536 | case R_PPC64_GNU_VTENTRY: | |
c152c796 | 4537 | if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) |
b34976b6 | 4538 | return FALSE; |
5bd4f169 AM |
4539 | break; |
4540 | ||
721956f4 AM |
4541 | case R_PPC64_REL14: |
4542 | case R_PPC64_REL14_BRTAKEN: | |
4543 | case R_PPC64_REL14_BRNTAKEN: | |
220c76dd AM |
4544 | { |
4545 | asection *dest = NULL; | |
4546 | ||
4547 | /* Heuristic: If jumping outside our section, chances are | |
4548 | we are going to need a stub. */ | |
4549 | if (h != NULL) | |
4550 | { | |
4551 | /* If the sym is weak it may be overridden later, so | |
4552 | don't assume we know where a weak sym lives. */ | |
4553 | if (h->root.type == bfd_link_hash_defined) | |
4554 | dest = h->root.u.def.section; | |
4555 | } | |
4556 | else | |
4557 | dest = bfd_section_from_r_symndx (abfd, &htab->sym_sec, | |
4558 | sec, r_symndx); | |
4559 | if (dest != sec) | |
4560 | htab->has_14bit_branch = 1; | |
4561 | } | |
721956f4 AM |
4562 | /* Fall through. */ |
4563 | ||
5d1634d7 | 4564 | case R_PPC64_REL24: |
8387904d | 4565 | if (h != NULL) |
5d1634d7 AM |
4566 | { |
4567 | /* We may need a .plt entry if the function this reloc | |
4568 | refers to is in a shared lib. */ | |
411e1bfb AM |
4569 | if (!update_plt_info (abfd, (struct ppc_link_hash_entry *) h, |
4570 | rel->r_addend)) | |
4571 | return FALSE; | |
8387904d AM |
4572 | if (h == &htab->tls_get_addr->elf |
4573 | || h == &htab->tls_get_addr_fd->elf) | |
411e1bfb | 4574 | sec->has_tls_reloc = 1; |
8387904d AM |
4575 | else if (htab->tls_get_addr == NULL |
4576 | && !strncmp (h->root.root.string, ".__tls_get_addr", 15) | |
a48ebf4d AM |
4577 | && (h->root.root.string[15] == 0 |
4578 | || h->root.root.string[15] == '@')) | |
411e1bfb | 4579 | { |
8387904d AM |
4580 | htab->tls_get_addr = (struct ppc_link_hash_entry *) h; |
4581 | sec->has_tls_reloc = 1; | |
4582 | } | |
4583 | else if (htab->tls_get_addr_fd == NULL | |
4584 | && !strncmp (h->root.root.string, "__tls_get_addr", 14) | |
4585 | && (h->root.root.string[14] == 0 | |
4586 | || h->root.root.string[14] == '@')) | |
4587 | { | |
4588 | htab->tls_get_addr_fd = (struct ppc_link_hash_entry *) h; | |
411e1bfb AM |
4589 | sec->has_tls_reloc = 1; |
4590 | } | |
4591 | } | |
4592 | break; | |
4593 | ||
4594 | case R_PPC64_TPREL64: | |
4595 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_TPREL; | |
4596 | if (info->shared) | |
4597 | info->flags |= DF_STATIC_TLS; | |
4598 | goto dotlstoc; | |
4599 | ||
4600 | case R_PPC64_DTPMOD64: | |
4601 | if (rel + 1 < rel_end | |
4602 | && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64) | |
4603 | && rel[1].r_offset == rel->r_offset + 8) | |
951fd09b | 4604 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_GD; |
411e1bfb | 4605 | else |
951fd09b | 4606 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_LD; |
411e1bfb AM |
4607 | goto dotlstoc; |
4608 | ||
4609 | case R_PPC64_DTPREL64: | |
4610 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_DTPREL; | |
4611 | if (rel != relocs | |
4612 | && rel[-1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPMOD64) | |
4613 | && rel[-1].r_offset == rel->r_offset - 8) | |
4614 | /* This is the second reloc of a dtpmod, dtprel pair. | |
4615 | Don't mark with TLS_DTPREL. */ | |
4616 | goto dodyn; | |
4617 | ||
4618 | dotlstoc: | |
4619 | sec->has_tls_reloc = 1; | |
4620 | if (h != NULL) | |
4621 | { | |
4622 | struct ppc_link_hash_entry *eh; | |
4623 | eh = (struct ppc_link_hash_entry *) h; | |
e7b938ca | 4624 | eh->tls_mask |= tls_type; |
411e1bfb AM |
4625 | } |
4626 | else | |
4627 | if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
4628 | rel->r_addend, tls_type)) | |
4629 | return FALSE; | |
4630 | ||
4631 | if (ppc64_elf_section_data (sec)->t_symndx == NULL) | |
4632 | { | |
e7b938ca | 4633 | /* One extra to simplify get_tls_mask. */ |
eea6121a | 4634 | bfd_size_type amt = sec->size * sizeof (unsigned) / 8 + 1; |
4ce794b7 | 4635 | ppc64_elf_section_data (sec)->t_symndx = bfd_zalloc (abfd, amt); |
411e1bfb AM |
4636 | if (ppc64_elf_section_data (sec)->t_symndx == NULL) |
4637 | return FALSE; | |
4638 | } | |
4639 | BFD_ASSERT (rel->r_offset % 8 == 0); | |
4640 | ppc64_elf_section_data (sec)->t_symndx[rel->r_offset / 8] = r_symndx; | |
951fd09b AM |
4641 | |
4642 | /* Mark the second slot of a GD or LD entry. | |
4643 | -1 to indicate GD and -2 to indicate LD. */ | |
4644 | if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_GD)) | |
4645 | ppc64_elf_section_data (sec)->t_symndx[rel->r_offset / 8 + 1] = -1; | |
4646 | else if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_LD)) | |
4647 | ppc64_elf_section_data (sec)->t_symndx[rel->r_offset / 8 + 1] = -2; | |
411e1bfb AM |
4648 | goto dodyn; |
4649 | ||
4650 | case R_PPC64_TPREL16: | |
4651 | case R_PPC64_TPREL16_LO: | |
4652 | case R_PPC64_TPREL16_HI: | |
4653 | case R_PPC64_TPREL16_HA: | |
4654 | case R_PPC64_TPREL16_DS: | |
4655 | case R_PPC64_TPREL16_LO_DS: | |
4656 | case R_PPC64_TPREL16_HIGHER: | |
4657 | case R_PPC64_TPREL16_HIGHERA: | |
4658 | case R_PPC64_TPREL16_HIGHEST: | |
4659 | case R_PPC64_TPREL16_HIGHESTA: | |
4660 | if (info->shared) | |
4661 | { | |
4662 | info->flags |= DF_STATIC_TLS; | |
4663 | goto dodyn; | |
5d1634d7 AM |
4664 | } |
4665 | break; | |
4666 | ||
e86ce104 | 4667 | case R_PPC64_ADDR64: |
1e2f5b6e | 4668 | if (opd_sym_map != NULL |
1e2f5b6e | 4669 | && rel + 1 < rel_end |
4ce794b7 | 4670 | && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC) |
1e2f5b6e | 4671 | { |
8387904d AM |
4672 | if (h != NULL) |
4673 | { | |
4674 | if (h->root.root.string[0] == '.' | |
4675 | && h->root.root.string[1] != 0 | |
4676 | && get_fdh ((struct ppc_link_hash_entry *) h, htab)) | |
4677 | ; | |
4678 | else | |
4679 | ((struct ppc_link_hash_entry *) h)->is_func = 1; | |
4680 | } | |
4681 | else | |
4682 | { | |
4683 | asection *s; | |
1e2f5b6e | 4684 | |
8387904d AM |
4685 | s = bfd_section_from_r_symndx (abfd, &htab->sym_sec, sec, |
4686 | r_symndx); | |
4687 | if (s == NULL) | |
4688 | return FALSE; | |
4689 | else if (s != sec) | |
3f764659 | 4690 | opd_sym_map[rel->r_offset / 8] = s; |
8387904d | 4691 | } |
1e2f5b6e | 4692 | } |
e86ce104 AM |
4693 | /* Fall through. */ |
4694 | ||
04c9666a | 4695 | case R_PPC64_REL30: |
5bd4f169 | 4696 | case R_PPC64_REL32: |
04c9666a | 4697 | case R_PPC64_REL64: |
65f38f15 AM |
4698 | case R_PPC64_ADDR14: |
4699 | case R_PPC64_ADDR14_BRNTAKEN: | |
4700 | case R_PPC64_ADDR14_BRTAKEN: | |
4701 | case R_PPC64_ADDR16: | |
4702 | case R_PPC64_ADDR16_DS: | |
4703 | case R_PPC64_ADDR16_HA: | |
4704 | case R_PPC64_ADDR16_HI: | |
4705 | case R_PPC64_ADDR16_HIGHER: | |
4706 | case R_PPC64_ADDR16_HIGHERA: | |
4707 | case R_PPC64_ADDR16_HIGHEST: | |
4708 | case R_PPC64_ADDR16_HIGHESTA: | |
4709 | case R_PPC64_ADDR16_LO: | |
4710 | case R_PPC64_ADDR16_LO_DS: | |
4711 | case R_PPC64_ADDR24: | |
65f38f15 | 4712 | case R_PPC64_ADDR32: |
65f38f15 AM |
4713 | case R_PPC64_UADDR16: |
4714 | case R_PPC64_UADDR32: | |
4715 | case R_PPC64_UADDR64: | |
5bd4f169 | 4716 | case R_PPC64_TOC: |
81848ca0 AM |
4717 | if (h != NULL && !info->shared) |
4718 | /* We may need a copy reloc. */ | |
f5385ebf | 4719 | h->non_got_ref = 1; |
81848ca0 | 4720 | |
41bd81ab | 4721 | /* Don't propagate .opd relocs. */ |
1e2f5b6e | 4722 | if (NO_OPD_RELOCS && opd_sym_map != NULL) |
e86ce104 | 4723 | break; |
e86ce104 | 4724 | |
65f38f15 AM |
4725 | /* If we are creating a shared library, and this is a reloc |
4726 | against a global symbol, or a non PC relative reloc | |
4727 | against a local symbol, then we need to copy the reloc | |
4728 | into the shared library. However, if we are linking with | |
4729 | -Bsymbolic, we do not need to copy a reloc against a | |
4730 | global symbol which is defined in an object we are | |
4731 | including in the link (i.e., DEF_REGULAR is set). At | |
4732 | this point we have not seen all the input files, so it is | |
4733 | possible that DEF_REGULAR is not set now but will be set | |
4734 | later (it is never cleared). In case of a weak definition, | |
4735 | DEF_REGULAR may be cleared later by a strong definition in | |
4736 | a shared library. We account for that possibility below by | |
f4656909 | 4737 | storing information in the dyn_relocs field of the hash |
65f38f15 AM |
4738 | table entry. A similar situation occurs when creating |
4739 | shared libraries and symbol visibility changes render the | |
4740 | symbol local. | |
4741 | ||
4742 | If on the other hand, we are creating an executable, we | |
4743 | may need to keep relocations for symbols satisfied by a | |
4744 | dynamic library if we manage to avoid copy relocs for the | |
4745 | symbol. */ | |
411e1bfb | 4746 | dodyn: |
65f38f15 | 4747 | if ((info->shared |
411e1bfb | 4748 | && (MUST_BE_DYN_RELOC (r_type) |
65f38f15 AM |
4749 | || (h != NULL |
4750 | && (! info->symbolic | |
4751 | || h->root.type == bfd_link_hash_defweak | |
f5385ebf | 4752 | || !h->def_regular)))) |
f4656909 AM |
4753 | || (ELIMINATE_COPY_RELOCS |
4754 | && !info->shared | |
65f38f15 AM |
4755 | && h != NULL |
4756 | && (h->root.type == bfd_link_hash_defweak | |
f5385ebf | 4757 | || !h->def_regular))) |
5bd4f169 | 4758 | { |
ec338859 AM |
4759 | struct ppc_dyn_relocs *p; |
4760 | struct ppc_dyn_relocs **head; | |
4761 | ||
65f38f15 AM |
4762 | /* We must copy these reloc types into the output file. |
4763 | Create a reloc section in dynobj and make room for | |
4764 | this reloc. */ | |
5bd4f169 AM |
4765 | if (sreloc == NULL) |
4766 | { | |
4767 | const char *name; | |
65f38f15 | 4768 | bfd *dynobj; |
5bd4f169 AM |
4769 | |
4770 | name = (bfd_elf_string_from_elf_section | |
4771 | (abfd, | |
4772 | elf_elfheader (abfd)->e_shstrndx, | |
4773 | elf_section_data (sec)->rel_hdr.sh_name)); | |
4774 | if (name == NULL) | |
b34976b6 | 4775 | return FALSE; |
5bd4f169 | 4776 | |
65f38f15 AM |
4777 | if (strncmp (name, ".rela", 5) != 0 |
4778 | || strcmp (bfd_get_section_name (abfd, sec), | |
4779 | name + 5) != 0) | |
4780 | { | |
4781 | (*_bfd_error_handler) | |
d003868e AM |
4782 | (_("%B: bad relocation section name `%s\'"), |
4783 | abfd, name); | |
5d1634d7 | 4784 | bfd_set_error (bfd_error_bad_value); |
65f38f15 AM |
4785 | } |
4786 | ||
65f38f15 | 4787 | dynobj = htab->elf.dynobj; |
5bd4f169 AM |
4788 | sreloc = bfd_get_section_by_name (dynobj, name); |
4789 | if (sreloc == NULL) | |
4790 | { | |
4791 | flagword flags; | |
4792 | ||
5bd4f169 | 4793 | flags = (SEC_HAS_CONTENTS | SEC_READONLY |
77623a34 AM |
4794 | | SEC_IN_MEMORY | SEC_LINKER_CREATED |
4795 | | SEC_ALLOC | SEC_LOAD); | |
3496cb2a L |
4796 | sreloc = bfd_make_section_with_flags (dynobj, |
4797 | name, | |
4798 | flags); | |
5bd4f169 | 4799 | if (sreloc == NULL |
65f38f15 | 4800 | || ! bfd_set_section_alignment (dynobj, sreloc, 3)) |
b34976b6 | 4801 | return FALSE; |
5bd4f169 | 4802 | } |
65f38f15 | 4803 | elf_section_data (sec)->sreloc = sreloc; |
5bd4f169 AM |
4804 | } |
4805 | ||
65f38f15 AM |
4806 | /* If this is a global symbol, we count the number of |
4807 | relocations we need for this symbol. */ | |
4808 | if (h != NULL) | |
4809 | { | |
ec338859 | 4810 | head = &((struct ppc_link_hash_entry *) h)->dyn_relocs; |
65f38f15 AM |
4811 | } |
4812 | else | |
4813 | { | |
ec338859 AM |
4814 | /* Track dynamic relocs needed for local syms too. |
4815 | We really need local syms available to do this | |
4816 | easily. Oh well. */ | |
4817 | ||
4818 | asection *s; | |
6edfbbad DJ |
4819 | void *vpp; |
4820 | ||
ec338859 AM |
4821 | s = bfd_section_from_r_symndx (abfd, &htab->sym_sec, |
4822 | sec, r_symndx); | |
4823 | if (s == NULL) | |
b34976b6 | 4824 | return FALSE; |
ec338859 | 4825 | |
6edfbbad DJ |
4826 | vpp = &elf_section_data (s)->local_dynrel; |
4827 | head = (struct ppc_dyn_relocs **) vpp; | |
65f38f15 | 4828 | } |
ec338859 AM |
4829 | |
4830 | p = *head; | |
4831 | if (p == NULL || p->sec != sec) | |
4832 | { | |
4ce794b7 | 4833 | p = bfd_alloc (htab->elf.dynobj, sizeof *p); |
ec338859 | 4834 | if (p == NULL) |
b34976b6 | 4835 | return FALSE; |
ec338859 AM |
4836 | p->next = *head; |
4837 | *head = p; | |
4838 | p->sec = sec; | |
4839 | p->count = 0; | |
4840 | p->pc_count = 0; | |
4841 | } | |
4842 | ||
4843 | p->count += 1; | |
411e1bfb | 4844 | if (!MUST_BE_DYN_RELOC (r_type)) |
ec338859 | 4845 | p->pc_count += 1; |
65f38f15 | 4846 | } |
5bd4f169 | 4847 | break; |
65f38f15 AM |
4848 | |
4849 | default: | |
96e0dda4 | 4850 | break; |
5bd4f169 AM |
4851 | } |
4852 | } | |
4853 | ||
b34976b6 | 4854 | return TRUE; |
5bd4f169 AM |
4855 | } |
4856 | ||
8387904d AM |
4857 | /* OFFSET in OPD_SEC specifies a function descriptor. Return the address |
4858 | of the code entry point, and its section. */ | |
4859 | ||
4860 | static bfd_vma | |
4861 | opd_entry_value (asection *opd_sec, | |
4862 | bfd_vma offset, | |
4863 | asection **code_sec, | |
4864 | bfd_vma *code_off) | |
4865 | { | |
4866 | bfd *opd_bfd = opd_sec->owner; | |
8860955f | 4867 | Elf_Internal_Rela *relocs; |
8387904d | 4868 | Elf_Internal_Rela *lo, *hi, *look; |
645ea6a9 | 4869 | bfd_vma val; |
8387904d | 4870 | |
4b85d634 AM |
4871 | /* No relocs implies we are linking a --just-symbols object. */ |
4872 | if (opd_sec->reloc_count == 0) | |
4873 | { | |
4874 | bfd_vma val; | |
4875 | ||
4876 | if (!bfd_get_section_contents (opd_bfd, opd_sec, &val, offset, 8)) | |
4877 | return (bfd_vma) -1; | |
3b36f7e6 | 4878 | |
4b85d634 AM |
4879 | if (code_sec != NULL) |
4880 | { | |
4881 | asection *sec, *likely = NULL; | |
4882 | for (sec = opd_bfd->sections; sec != NULL; sec = sec->next) | |
4883 | if (sec->vma <= val | |
4884 | && (sec->flags & SEC_LOAD) != 0 | |
4885 | && (sec->flags & SEC_ALLOC) != 0) | |
4886 | likely = sec; | |
4887 | if (likely != NULL) | |
4888 | { | |
4889 | *code_sec = likely; | |
4890 | if (code_off != NULL) | |
4891 | *code_off = val - likely->vma; | |
4892 | } | |
4893 | } | |
4894 | return val; | |
4895 | } | |
4896 | ||
8860955f AM |
4897 | relocs = ppc64_elf_tdata (opd_bfd)->opd_relocs; |
4898 | if (relocs == NULL) | |
4899 | relocs = _bfd_elf_link_read_relocs (opd_bfd, opd_sec, NULL, NULL, TRUE); | |
645ea6a9 | 4900 | |
8387904d | 4901 | /* Go find the opd reloc at the sym address. */ |
8860955f | 4902 | lo = relocs; |
8387904d AM |
4903 | BFD_ASSERT (lo != NULL); |
4904 | hi = lo + opd_sec->reloc_count - 1; /* ignore last reloc */ | |
645ea6a9 | 4905 | val = (bfd_vma) -1; |
8387904d AM |
4906 | while (lo < hi) |
4907 | { | |
4908 | look = lo + (hi - lo) / 2; | |
4909 | if (look->r_offset < offset) | |
4910 | lo = look + 1; | |
4911 | else if (look->r_offset > offset) | |
4912 | hi = look; | |
4913 | else | |
4914 | { | |
4915 | Elf_Internal_Shdr *symtab_hdr = &elf_tdata (opd_bfd)->symtab_hdr; | |
4916 | if (ELF64_R_TYPE (look->r_info) == R_PPC64_ADDR64 | |
4917 | && ELF64_R_TYPE ((look + 1)->r_info) == R_PPC64_TOC) | |
4918 | { | |
4919 | unsigned long symndx = ELF64_R_SYM (look->r_info); | |
8387904d AM |
4920 | asection *sec; |
4921 | ||
4922 | if (symndx < symtab_hdr->sh_info) | |
4923 | { | |
4924 | Elf_Internal_Sym *sym; | |
4925 | ||
4926 | sym = (Elf_Internal_Sym *) symtab_hdr->contents; | |
4927 | if (sym == NULL) | |
4928 | { | |
4929 | sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr, | |
4930 | symtab_hdr->sh_info, | |
4931 | 0, NULL, NULL, NULL); | |
4932 | if (sym == NULL) | |
645ea6a9 | 4933 | break; |
8387904d AM |
4934 | symtab_hdr->contents = (bfd_byte *) sym; |
4935 | } | |
4936 | ||
4937 | sym += symndx; | |
4938 | val = sym->st_value; | |
4939 | sec = NULL; | |
4940 | if ((sym->st_shndx != SHN_UNDEF | |
4941 | && sym->st_shndx < SHN_LORESERVE) | |
4942 | || sym->st_shndx > SHN_HIRESERVE) | |
4943 | sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx); | |
4944 | BFD_ASSERT ((sec->flags & SEC_MERGE) == 0); | |
4945 | } | |
4946 | else | |
4947 | { | |
4948 | struct elf_link_hash_entry **sym_hashes; | |
4949 | struct elf_link_hash_entry *rh; | |
4950 | ||
4951 | sym_hashes = elf_sym_hashes (opd_bfd); | |
4952 | rh = sym_hashes[symndx - symtab_hdr->sh_info]; | |
4953 | while (rh->root.type == bfd_link_hash_indirect | |
4954 | || rh->root.type == bfd_link_hash_warning) | |
4955 | rh = ((struct elf_link_hash_entry *) rh->root.u.i.link); | |
4956 | BFD_ASSERT (rh->root.type == bfd_link_hash_defined | |
4957 | || rh->root.type == bfd_link_hash_defweak); | |
4958 | val = rh->root.u.def.value; | |
4959 | sec = rh->root.u.def.section; | |
4960 | } | |
4961 | val += look->r_addend; | |
4962 | if (code_off != NULL) | |
4963 | *code_off = val; | |
4964 | if (code_sec != NULL) | |
4965 | *code_sec = sec; | |
4966 | if (sec != NULL && sec->output_section != NULL) | |
4967 | val += sec->output_section->vma + sec->output_offset; | |
8387904d AM |
4968 | } |
4969 | break; | |
4970 | } | |
4971 | } | |
645ea6a9 | 4972 | |
645ea6a9 | 4973 | return val; |
8387904d AM |
4974 | } |
4975 | ||
64d03ab5 AM |
4976 | /* Mark sections containing dynamically referenced symbols. When |
4977 | building shared libraries, we must assume that any visible symbol is | |
4978 | referenced. */ | |
4979 | ||
4980 | static bfd_boolean | |
4981 | ppc64_elf_gc_mark_dynamic_ref (struct elf_link_hash_entry *h, void *inf) | |
4982 | { | |
4983 | struct bfd_link_info *info = (struct bfd_link_info *) inf; | |
4984 | struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h; | |
4985 | ||
4986 | if (eh->elf.root.type == bfd_link_hash_warning) | |
4987 | eh = (struct ppc_link_hash_entry *) eh->elf.root.u.i.link; | |
4988 | ||
4989 | /* Dynamic linking info is on the func descriptor sym. */ | |
4990 | if (eh->oh != NULL | |
4991 | && eh->oh->is_func_descriptor | |
4992 | && (eh->oh->elf.root.type == bfd_link_hash_defined | |
4993 | || eh->oh->elf.root.type == bfd_link_hash_defweak)) | |
4994 | eh = eh->oh; | |
4995 | ||
4996 | if ((eh->elf.root.type == bfd_link_hash_defined | |
4997 | || eh->elf.root.type == bfd_link_hash_defweak) | |
4998 | && (eh->elf.ref_dynamic | |
4999 | || (!info->executable | |
5000 | && eh->elf.def_regular | |
5001 | && ELF_ST_VISIBILITY (eh->elf.other) != STV_INTERNAL | |
5002 | && ELF_ST_VISIBILITY (eh->elf.other) != STV_HIDDEN))) | |
5003 | { | |
5004 | asection *code_sec; | |
5005 | ||
5006 | eh->elf.root.u.def.section->flags |= SEC_KEEP; | |
5007 | ||
5008 | /* Function descriptor syms cause the associated | |
5009 | function code sym section to be marked. */ | |
5010 | if (eh->is_func_descriptor | |
5011 | && (eh->oh->elf.root.type == bfd_link_hash_defined | |
5012 | || eh->oh->elf.root.type == bfd_link_hash_defweak)) | |
5013 | eh->oh->elf.root.u.def.section->flags |= SEC_KEEP; | |
5014 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL | |
5015 | && opd_entry_value (eh->elf.root.u.def.section, | |
5016 | eh->elf.root.u.def.value, | |
5017 | &code_sec, NULL) != (bfd_vma) -1) | |
5018 | code_sec->flags |= SEC_KEEP; | |
5019 | } | |
5020 | ||
5021 | return TRUE; | |
5022 | } | |
5023 | ||
5bd4f169 AM |
5024 | /* Return the section that should be marked against GC for a given |
5025 | relocation. */ | |
5026 | ||
5027 | static asection * | |
4ce794b7 | 5028 | ppc64_elf_gc_mark_hook (asection *sec, |
ccfa59ea | 5029 | struct bfd_link_info *info, |
4ce794b7 AM |
5030 | Elf_Internal_Rela *rel, |
5031 | struct elf_link_hash_entry *h, | |
5032 | Elf_Internal_Sym *sym) | |
5bd4f169 | 5033 | { |
ccfa59ea AM |
5034 | asection *rsec; |
5035 | ||
5036 | /* First mark all our entry sym sections. */ | |
5037 | if (info->gc_sym_list != NULL) | |
5038 | { | |
5039 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
5040 | struct bfd_sym_chain *sym = info->gc_sym_list; | |
5041 | ||
5042 | info->gc_sym_list = NULL; | |
b56cbdb9 | 5043 | for (; sym != NULL; sym = sym->next) |
ccfa59ea AM |
5044 | { |
5045 | struct ppc_link_hash_entry *eh; | |
5046 | ||
5047 | eh = (struct ppc_link_hash_entry *) | |
5048 | elf_link_hash_lookup (&htab->elf, sym->name, FALSE, FALSE, FALSE); | |
5049 | if (eh == NULL) | |
5050 | continue; | |
5051 | if (eh->elf.root.type != bfd_link_hash_defined | |
5052 | && eh->elf.root.type != bfd_link_hash_defweak) | |
5053 | continue; | |
5054 | ||
c4f68ce3 AM |
5055 | if (eh->is_func_descriptor |
5056 | && (eh->oh->elf.root.type == bfd_link_hash_defined | |
5057 | || eh->oh->elf.root.type == bfd_link_hash_defweak)) | |
ccfa59ea | 5058 | rsec = eh->oh->elf.root.u.def.section; |
8387904d AM |
5059 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL |
5060 | && opd_entry_value (eh->elf.root.u.def.section, | |
5061 | eh->elf.root.u.def.value, | |
5062 | &rsec, NULL) != (bfd_vma) -1) | |
5063 | ; | |
ccfa59ea AM |
5064 | else |
5065 | continue; | |
5066 | ||
5067 | if (!rsec->gc_mark) | |
5068 | _bfd_elf_gc_mark (info, rsec, ppc64_elf_gc_mark_hook); | |
5069 | ||
5070 | rsec = eh->elf.root.u.def.section; | |
5071 | if (!rsec->gc_mark) | |
5072 | _bfd_elf_gc_mark (info, rsec, ppc64_elf_gc_mark_hook); | |
ccfa59ea | 5073 | } |
ccfa59ea AM |
5074 | } |
5075 | ||
5076 | /* Syms return NULL if we're marking .opd, so we avoid marking all | |
5077 | function sections, as all functions are referenced in .opd. */ | |
5078 | rsec = NULL; | |
5079 | if (get_opd_info (sec) != NULL) | |
5080 | return rsec; | |
1e2f5b6e | 5081 | |
5bd4f169 AM |
5082 | if (h != NULL) |
5083 | { | |
04c9666a | 5084 | enum elf_ppc64_reloc_type r_type; |
ccfa59ea | 5085 | struct ppc_link_hash_entry *eh; |
a33d1f77 | 5086 | |
4ce794b7 | 5087 | r_type = ELF64_R_TYPE (rel->r_info); |
a33d1f77 | 5088 | switch (r_type) |
5bd4f169 AM |
5089 | { |
5090 | case R_PPC64_GNU_VTINHERIT: | |
5091 | case R_PPC64_GNU_VTENTRY: | |
5092 | break; | |
5093 | ||
5094 | default: | |
5095 | switch (h->root.type) | |
5096 | { | |
5097 | case bfd_link_hash_defined: | |
5098 | case bfd_link_hash_defweak: | |
ccfa59ea | 5099 | eh = (struct ppc_link_hash_entry *) h; |
c4f68ce3 AM |
5100 | if (eh->oh != NULL |
5101 | && eh->oh->is_func_descriptor | |
5102 | && (eh->oh->elf.root.type == bfd_link_hash_defined | |
5103 | || eh->oh->elf.root.type == bfd_link_hash_defweak)) | |
ccfa59ea | 5104 | eh = eh->oh; |
1e2f5b6e AM |
5105 | |
5106 | /* Function descriptor syms cause the associated | |
5107 | function code sym section to be marked. */ | |
c4f68ce3 AM |
5108 | if (eh->is_func_descriptor |
5109 | && (eh->oh->elf.root.type == bfd_link_hash_defined | |
5110 | || eh->oh->elf.root.type == bfd_link_hash_defweak)) | |
ccfa59ea AM |
5111 | { |
5112 | /* They also mark their opd section. */ | |
5113 | if (!eh->elf.root.u.def.section->gc_mark) | |
5114 | _bfd_elf_gc_mark (info, eh->elf.root.u.def.section, | |
5115 | ppc64_elf_gc_mark_hook); | |
5116 | ||
5117 | rsec = eh->oh->elf.root.u.def.section; | |
5118 | } | |
8387904d AM |
5119 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL |
5120 | && opd_entry_value (eh->elf.root.u.def.section, | |
5121 | eh->elf.root.u.def.value, | |
5122 | &rsec, NULL) != (bfd_vma) -1) | |
5123 | { | |
5124 | if (!eh->elf.root.u.def.section->gc_mark) | |
5125 | _bfd_elf_gc_mark (info, eh->elf.root.u.def.section, | |
5126 | ppc64_elf_gc_mark_hook); | |
5127 | } | |
ccfa59ea | 5128 | else |
1e2f5b6e AM |
5129 | rsec = h->root.u.def.section; |
5130 | break; | |
5bd4f169 AM |
5131 | |
5132 | case bfd_link_hash_common: | |
1e2f5b6e AM |
5133 | rsec = h->root.u.c.p->section; |
5134 | break; | |
5bd4f169 AM |
5135 | |
5136 | default: | |
5137 | break; | |
5138 | } | |
5139 | } | |
5140 | } | |
5141 | else | |
5142 | { | |
1e2f5b6e AM |
5143 | asection **opd_sym_section; |
5144 | ||
5145 | rsec = bfd_section_from_elf_index (sec->owner, sym->st_shndx); | |
ccfa59ea | 5146 | opd_sym_section = get_opd_info (rsec); |
1e2f5b6e | 5147 | if (opd_sym_section != NULL) |
ccfa59ea AM |
5148 | { |
5149 | if (!rsec->gc_mark) | |
5150 | _bfd_elf_gc_mark (info, rsec, ppc64_elf_gc_mark_hook); | |
5151 | ||
b4f4e59f | 5152 | rsec = opd_sym_section[(sym->st_value + rel->r_addend) / 8]; |
ccfa59ea | 5153 | } |
5bd4f169 AM |
5154 | } |
5155 | ||
1e2f5b6e | 5156 | return rsec; |
5bd4f169 AM |
5157 | } |
5158 | ||
65f38f15 AM |
5159 | /* Update the .got, .plt. and dynamic reloc reference counts for the |
5160 | section being removed. */ | |
5bd4f169 | 5161 | |
b34976b6 | 5162 | static bfd_boolean |
4ce794b7 AM |
5163 | ppc64_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info, |
5164 | asection *sec, const Elf_Internal_Rela *relocs) | |
5bd4f169 | 5165 | { |
411e1bfb | 5166 | struct ppc_link_hash_table *htab; |
5bd4f169 AM |
5167 | Elf_Internal_Shdr *symtab_hdr; |
5168 | struct elf_link_hash_entry **sym_hashes; | |
411e1bfb | 5169 | struct got_entry **local_got_ents; |
5bd4f169 | 5170 | const Elf_Internal_Rela *rel, *relend; |
5bd4f169 | 5171 | |
680a3378 AM |
5172 | if ((sec->flags & SEC_ALLOC) == 0) |
5173 | return TRUE; | |
5174 | ||
ec338859 AM |
5175 | elf_section_data (sec)->local_dynrel = NULL; |
5176 | ||
411e1bfb | 5177 | htab = ppc_hash_table (info); |
5bd4f169 AM |
5178 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
5179 | sym_hashes = elf_sym_hashes (abfd); | |
411e1bfb | 5180 | local_got_ents = elf_local_got_ents (abfd); |
5bd4f169 AM |
5181 | |
5182 | relend = relocs + sec->reloc_count; | |
5183 | for (rel = relocs; rel < relend; rel++) | |
a33d1f77 AM |
5184 | { |
5185 | unsigned long r_symndx; | |
04c9666a | 5186 | enum elf_ppc64_reloc_type r_type; |
58ac9f71 | 5187 | struct elf_link_hash_entry *h = NULL; |
411e1bfb | 5188 | char tls_type = 0; |
5bd4f169 | 5189 | |
a33d1f77 | 5190 | r_symndx = ELF64_R_SYM (rel->r_info); |
4ce794b7 | 5191 | r_type = ELF64_R_TYPE (rel->r_info); |
58ac9f71 AM |
5192 | if (r_symndx >= symtab_hdr->sh_info) |
5193 | { | |
5194 | struct ppc_link_hash_entry *eh; | |
5195 | struct ppc_dyn_relocs **pp; | |
5196 | struct ppc_dyn_relocs *p; | |
5197 | ||
5198 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
3eb128b2 AM |
5199 | while (h->root.type == bfd_link_hash_indirect |
5200 | || h->root.type == bfd_link_hash_warning) | |
5201 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
58ac9f71 AM |
5202 | eh = (struct ppc_link_hash_entry *) h; |
5203 | ||
5204 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next) | |
5205 | if (p->sec == sec) | |
5206 | { | |
5207 | /* Everything must go for SEC. */ | |
5208 | *pp = p->next; | |
5209 | break; | |
5210 | } | |
5211 | } | |
5212 | ||
a33d1f77 AM |
5213 | switch (r_type) |
5214 | { | |
411e1bfb AM |
5215 | case R_PPC64_GOT_TLSLD16: |
5216 | case R_PPC64_GOT_TLSLD16_LO: | |
5217 | case R_PPC64_GOT_TLSLD16_HI: | |
5218 | case R_PPC64_GOT_TLSLD16_HA: | |
e717da7e | 5219 | ppc64_tlsld_got (abfd)->refcount -= 1; |
951fd09b | 5220 | tls_type = TLS_TLS | TLS_LD; |
411e1bfb AM |
5221 | goto dogot; |
5222 | ||
5223 | case R_PPC64_GOT_TLSGD16: | |
5224 | case R_PPC64_GOT_TLSGD16_LO: | |
5225 | case R_PPC64_GOT_TLSGD16_HI: | |
5226 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b | 5227 | tls_type = TLS_TLS | TLS_GD; |
411e1bfb AM |
5228 | goto dogot; |
5229 | ||
5230 | case R_PPC64_GOT_TPREL16_DS: | |
5231 | case R_PPC64_GOT_TPREL16_LO_DS: | |
5232 | case R_PPC64_GOT_TPREL16_HI: | |
5233 | case R_PPC64_GOT_TPREL16_HA: | |
5234 | tls_type = TLS_TLS | TLS_TPREL; | |
5235 | goto dogot; | |
5236 | ||
5237 | case R_PPC64_GOT_DTPREL16_DS: | |
5238 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
5239 | case R_PPC64_GOT_DTPREL16_HI: | |
5240 | case R_PPC64_GOT_DTPREL16_HA: | |
5241 | tls_type = TLS_TLS | TLS_DTPREL; | |
5242 | goto dogot; | |
5243 | ||
a33d1f77 AM |
5244 | case R_PPC64_GOT16: |
5245 | case R_PPC64_GOT16_DS: | |
5246 | case R_PPC64_GOT16_HA: | |
5247 | case R_PPC64_GOT16_HI: | |
5248 | case R_PPC64_GOT16_LO: | |
5249 | case R_PPC64_GOT16_LO_DS: | |
411e1bfb AM |
5250 | dogot: |
5251 | { | |
5252 | struct got_entry *ent; | |
5253 | ||
58ac9f71 AM |
5254 | if (h != NULL) |
5255 | ent = h->got.glist; | |
411e1bfb AM |
5256 | else |
5257 | ent = local_got_ents[r_symndx]; | |
5258 | ||
5259 | for (; ent != NULL; ent = ent->next) | |
5260 | if (ent->addend == rel->r_addend | |
e717da7e | 5261 | && ent->owner == abfd |
411e1bfb AM |
5262 | && ent->tls_type == tls_type) |
5263 | break; | |
5264 | if (ent == NULL) | |
5265 | abort (); | |
5266 | if (ent->got.refcount > 0) | |
5267 | ent->got.refcount -= 1; | |
5268 | } | |
a33d1f77 | 5269 | break; |
65f38f15 | 5270 | |
a33d1f77 AM |
5271 | case R_PPC64_PLT16_HA: |
5272 | case R_PPC64_PLT16_HI: | |
5273 | case R_PPC64_PLT16_LO: | |
5274 | case R_PPC64_PLT32: | |
5275 | case R_PPC64_PLT64: | |
721956f4 AM |
5276 | case R_PPC64_REL14: |
5277 | case R_PPC64_REL14_BRNTAKEN: | |
5278 | case R_PPC64_REL14_BRTAKEN: | |
5d1634d7 | 5279 | case R_PPC64_REL24: |
58ac9f71 | 5280 | if (h != NULL) |
5d1634d7 | 5281 | { |
411e1bfb AM |
5282 | struct plt_entry *ent; |
5283 | ||
411e1bfb AM |
5284 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) |
5285 | if (ent->addend == rel->r_addend) | |
5286 | break; | |
5287 | if (ent == NULL) | |
5288 | abort (); | |
5289 | if (ent->plt.refcount > 0) | |
5290 | ent->plt.refcount -= 1; | |
5d1634d7 | 5291 | } |
e86ce104 | 5292 | break; |
5d1634d7 | 5293 | |
a33d1f77 AM |
5294 | default: |
5295 | break; | |
5296 | } | |
5297 | } | |
b34976b6 | 5298 | return TRUE; |
5bd4f169 AM |
5299 | } |
5300 | ||
deb0e272 AM |
5301 | /* The maximum size of .sfpr. */ |
5302 | #define SFPR_MAX (218*4) | |
5303 | ||
5304 | struct sfpr_def_parms | |
5305 | { | |
699733f6 AM |
5306 | const char name[12]; |
5307 | unsigned char lo, hi; | |
deb0e272 AM |
5308 | bfd_byte * (*write_ent) (bfd *, bfd_byte *, int); |
5309 | bfd_byte * (*write_tail) (bfd *, bfd_byte *, int); | |
5310 | }; | |
5311 | ||
5312 | /* Auto-generate _save*, _rest* functions in .sfpr. */ | |
5313 | ||
5314 | static unsigned int | |
5315 | sfpr_define (struct bfd_link_info *info, const struct sfpr_def_parms *parm) | |
5316 | { | |
5317 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
5318 | unsigned int i; | |
5319 | size_t len = strlen (parm->name); | |
5320 | bfd_boolean writing = FALSE; | |
699733f6 | 5321 | char sym[16]; |
deb0e272 AM |
5322 | |
5323 | memcpy (sym, parm->name, len); | |
5324 | sym[len + 2] = 0; | |
5325 | ||
5326 | for (i = parm->lo; i <= parm->hi; i++) | |
5327 | { | |
5328 | struct elf_link_hash_entry *h; | |
5329 | ||
5330 | sym[len + 0] = i / 10 + '0'; | |
5331 | sym[len + 1] = i % 10 + '0'; | |
5332 | h = elf_link_hash_lookup (&htab->elf, sym, FALSE, FALSE, TRUE); | |
5333 | if (h != NULL | |
f5385ebf | 5334 | && !h->def_regular) |
deb0e272 AM |
5335 | { |
5336 | h->root.type = bfd_link_hash_defined; | |
5337 | h->root.u.def.section = htab->sfpr; | |
5338 | h->root.u.def.value = htab->sfpr->size; | |
5339 | h->type = STT_FUNC; | |
f5385ebf | 5340 | h->def_regular = 1; |
deb0e272 AM |
5341 | _bfd_elf_link_hash_hide_symbol (info, h, TRUE); |
5342 | writing = TRUE; | |
5343 | if (htab->sfpr->contents == NULL) | |
5344 | { | |
5345 | htab->sfpr->contents = bfd_alloc (htab->elf.dynobj, SFPR_MAX); | |
5346 | if (htab->sfpr->contents == NULL) | |
5347 | return FALSE; | |
5348 | } | |
5349 | } | |
5350 | if (writing) | |
5351 | { | |
5352 | bfd_byte *p = htab->sfpr->contents + htab->sfpr->size; | |
5353 | if (i != parm->hi) | |
5354 | p = (*parm->write_ent) (htab->elf.dynobj, p, i); | |
5355 | else | |
5356 | p = (*parm->write_tail) (htab->elf.dynobj, p, i); | |
5357 | htab->sfpr->size = p - htab->sfpr->contents; | |
5358 | } | |
5359 | } | |
5360 | ||
5361 | return TRUE; | |
5362 | } | |
5363 | ||
5364 | static bfd_byte * | |
5365 | savegpr0 (bfd *abfd, bfd_byte *p, int r) | |
5366 | { | |
5367 | bfd_put_32 (abfd, STD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
5368 | return p + 4; | |
5369 | } | |
5370 | ||
5371 | static bfd_byte * | |
5372 | savegpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
5373 | { | |
5374 | p = savegpr0 (abfd, p, r); | |
5375 | bfd_put_32 (abfd, STD_R0_0R1 + 16, p); | |
5376 | p = p + 4; | |
5377 | bfd_put_32 (abfd, BLR, p); | |
5378 | return p + 4; | |
5379 | } | |
5380 | ||
5381 | static bfd_byte * | |
5382 | restgpr0 (bfd *abfd, bfd_byte *p, int r) | |
5383 | { | |
5384 | bfd_put_32 (abfd, LD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
5385 | return p + 4; | |
5386 | } | |
5387 | ||
5388 | static bfd_byte * | |
5389 | restgpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
5390 | { | |
5391 | bfd_put_32 (abfd, LD_R0_0R1 + 16, p); | |
5392 | p = p + 4; | |
5393 | p = restgpr0 (abfd, p, r); | |
5394 | bfd_put_32 (abfd, MTLR_R0, p); | |
5395 | p = p + 4; | |
5396 | if (r == 29) | |
5397 | { | |
5398 | p = restgpr0 (abfd, p, 30); | |
5399 | p = restgpr0 (abfd, p, 31); | |
5400 | } | |
5401 | bfd_put_32 (abfd, BLR, p); | |
5402 | return p + 4; | |
5403 | } | |
5404 | ||
5405 | static bfd_byte * | |
5406 | savegpr1 (bfd *abfd, bfd_byte *p, int r) | |
5407 | { | |
5408 | bfd_put_32 (abfd, STD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
5409 | return p + 4; | |
5410 | } | |
5411 | ||
5412 | static bfd_byte * | |
5413 | savegpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
5414 | { | |
5415 | p = savegpr1 (abfd, p, r); | |
5416 | bfd_put_32 (abfd, BLR, p); | |
5417 | return p + 4; | |
5418 | } | |
5419 | ||
5420 | static bfd_byte * | |
5421 | restgpr1 (bfd *abfd, bfd_byte *p, int r) | |
5422 | { | |
5423 | bfd_put_32 (abfd, LD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
5424 | return p + 4; | |
5425 | } | |
5426 | ||
5427 | static bfd_byte * | |
5428 | restgpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
5429 | { | |
5430 | p = restgpr1 (abfd, p, r); | |
5431 | bfd_put_32 (abfd, BLR, p); | |
5432 | return p + 4; | |
5433 | } | |
5434 | ||
5435 | static bfd_byte * | |
5436 | savefpr (bfd *abfd, bfd_byte *p, int r) | |
5437 | { | |
5438 | bfd_put_32 (abfd, STFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
5439 | return p + 4; | |
5440 | } | |
5441 | ||
5442 | static bfd_byte * | |
5443 | savefpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
5444 | { | |
5445 | p = savefpr (abfd, p, r); | |
5446 | bfd_put_32 (abfd, STD_R0_0R1 + 16, p); | |
5447 | p = p + 4; | |
5448 | bfd_put_32 (abfd, BLR, p); | |
5449 | return p + 4; | |
5450 | } | |
5451 | ||
5452 | static bfd_byte * | |
5453 | restfpr (bfd *abfd, bfd_byte *p, int r) | |
5454 | { | |
5455 | bfd_put_32 (abfd, LFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
5456 | return p + 4; | |
5457 | } | |
5458 | ||
5459 | static bfd_byte * | |
5460 | restfpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
5461 | { | |
5462 | bfd_put_32 (abfd, LD_R0_0R1 + 16, p); | |
5463 | p = p + 4; | |
5464 | p = restfpr (abfd, p, r); | |
5465 | bfd_put_32 (abfd, MTLR_R0, p); | |
5466 | p = p + 4; | |
5467 | if (r == 29) | |
5468 | { | |
5469 | p = restfpr (abfd, p, 30); | |
5470 | p = restfpr (abfd, p, 31); | |
5471 | } | |
5472 | bfd_put_32 (abfd, BLR, p); | |
5473 | return p + 4; | |
5474 | } | |
5475 | ||
5476 | static bfd_byte * | |
5477 | savefpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
5478 | { | |
5479 | p = savefpr (abfd, p, r); | |
5480 | bfd_put_32 (abfd, BLR, p); | |
5481 | return p + 4; | |
5482 | } | |
5483 | ||
5484 | static bfd_byte * | |
5485 | restfpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
5486 | { | |
5487 | p = restfpr (abfd, p, r); | |
5488 | bfd_put_32 (abfd, BLR, p); | |
5489 | return p + 4; | |
5490 | } | |
5491 | ||
5492 | static bfd_byte * | |
5493 | savevr (bfd *abfd, bfd_byte *p, int r) | |
5494 | { | |
5495 | bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p); | |
5496 | p = p + 4; | |
5497 | bfd_put_32 (abfd, STVX_VR0_R12_R0 + (r << 21), p); | |
5498 | return p + 4; | |
5499 | } | |
5500 | ||
5501 | static bfd_byte * | |
5502 | savevr_tail (bfd *abfd, bfd_byte *p, int r) | |
5503 | { | |
5504 | p = savevr (abfd, p, r); | |
5505 | bfd_put_32 (abfd, BLR, p); | |
5506 | return p + 4; | |
5507 | } | |
5508 | ||
5509 | static bfd_byte * | |
5510 | restvr (bfd *abfd, bfd_byte *p, int r) | |
5511 | { | |
5512 | bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p); | |
5513 | p = p + 4; | |
5514 | bfd_put_32 (abfd, LVX_VR0_R12_R0 + (r << 21), p); | |
5515 | return p + 4; | |
5516 | } | |
5517 | ||
5518 | static bfd_byte * | |
5519 | restvr_tail (bfd *abfd, bfd_byte *p, int r) | |
5520 | { | |
5521 | p = restvr (abfd, p, r); | |
5522 | bfd_put_32 (abfd, BLR, p); | |
5523 | return p + 4; | |
5524 | } | |
5525 | ||
e86ce104 AM |
5526 | /* Called via elf_link_hash_traverse to transfer dynamic linking |
5527 | information on function code symbol entries to their corresponding | |
5528 | function descriptor symbol entries. */ | |
deb0e272 | 5529 | |
b34976b6 | 5530 | static bfd_boolean |
4ce794b7 | 5531 | func_desc_adjust (struct elf_link_hash_entry *h, void *inf) |
5bd4f169 | 5532 | { |
e86ce104 | 5533 | struct bfd_link_info *info; |
65f38f15 | 5534 | struct ppc_link_hash_table *htab; |
411e1bfb | 5535 | struct plt_entry *ent; |
50bc7936 AM |
5536 | struct ppc_link_hash_entry *fh; |
5537 | struct ppc_link_hash_entry *fdh; | |
5538 | bfd_boolean force_local; | |
5bd4f169 | 5539 | |
50bc7936 AM |
5540 | fh = (struct ppc_link_hash_entry *) h; |
5541 | if (fh->elf.root.type == bfd_link_hash_indirect) | |
b34976b6 | 5542 | return TRUE; |
e86ce104 | 5543 | |
50bc7936 AM |
5544 | if (fh->elf.root.type == bfd_link_hash_warning) |
5545 | fh = (struct ppc_link_hash_entry *) fh->elf.root.u.i.link; | |
e92d460e | 5546 | |
4ce794b7 | 5547 | info = inf; |
65f38f15 | 5548 | htab = ppc_hash_table (info); |
5bd4f169 | 5549 | |
c09bdfe5 AM |
5550 | /* Resolve undefined references to dot-symbols as the value |
5551 | in the function descriptor, if we have one in a regular object. | |
5552 | This is to satisfy cases like ".quad .foo". Calls to functions | |
5553 | in dynamic objects are handled elsewhere. */ | |
5554 | if (fh->elf.root.type == bfd_link_hash_undefweak | |
5555 | && fh->was_undefined | |
5556 | && (fh->oh->elf.root.type == bfd_link_hash_defined | |
5557 | || fh->oh->elf.root.type == bfd_link_hash_defweak) | |
5558 | && get_opd_info (fh->oh->elf.root.u.def.section) != NULL | |
5559 | && opd_entry_value (fh->oh->elf.root.u.def.section, | |
5560 | fh->oh->elf.root.u.def.value, | |
5561 | &fh->elf.root.u.def.section, | |
5562 | &fh->elf.root.u.def.value) != (bfd_vma) -1) | |
5563 | { | |
5564 | fh->elf.root.type = fh->oh->elf.root.type; | |
f5385ebf | 5565 | fh->elf.forced_local = 1; |
c09bdfe5 AM |
5566 | } |
5567 | ||
e86ce104 AM |
5568 | /* If this is a function code symbol, transfer dynamic linking |
5569 | information to the function descriptor symbol. */ | |
50bc7936 | 5570 | if (!fh->is_func) |
b34976b6 | 5571 | return TRUE; |
e86ce104 | 5572 | |
50bc7936 | 5573 | for (ent = fh->elf.plt.plist; ent != NULL; ent = ent->next) |
411e1bfb AM |
5574 | if (ent->plt.refcount > 0) |
5575 | break; | |
50bc7936 AM |
5576 | if (ent == NULL |
5577 | || fh->elf.root.root.string[0] != '.' | |
5578 | || fh->elf.root.root.string[1] == '\0') | |
5579 | return TRUE; | |
5bd4f169 | 5580 | |
50bc7936 AM |
5581 | /* Find the corresponding function descriptor symbol. Create it |
5582 | as undefined if necessary. */ | |
5bd4f169 | 5583 | |
50bc7936 AM |
5584 | fdh = get_fdh (fh, htab); |
5585 | if (fdh != NULL) | |
5586 | while (fdh->elf.root.type == bfd_link_hash_indirect | |
5587 | || fdh->elf.root.type == bfd_link_hash_warning) | |
5588 | fdh = (struct ppc_link_hash_entry *) fdh->elf.root.u.i.link; | |
5bd4f169 | 5589 | |
50bc7936 AM |
5590 | if (fdh == NULL |
5591 | && info->shared | |
5592 | && (fh->elf.root.type == bfd_link_hash_undefined | |
5593 | || fh->elf.root.type == bfd_link_hash_undefweak)) | |
5594 | { | |
908b32fc | 5595 | fdh = make_fdh (info, fh); |
bb700d78 AM |
5596 | if (fdh == NULL) |
5597 | return FALSE; | |
50bc7936 | 5598 | } |
648cca2c | 5599 | |
908b32fc | 5600 | /* Fake function descriptors are made undefweak. If the function |
433817dd AM |
5601 | code symbol is strong undefined, make the fake sym the same. |
5602 | If the function code symbol is defined, then force the fake | |
5603 | descriptor local; We can't support overriding of symbols in a | |
5604 | shared library on a fake descriptor. */ | |
908b32fc AM |
5605 | |
5606 | if (fdh != NULL | |
5607 | && fdh->fake | |
433817dd | 5608 | && fdh->elf.root.type == bfd_link_hash_undefweak) |
908b32fc | 5609 | { |
433817dd AM |
5610 | if (fh->elf.root.type == bfd_link_hash_undefined) |
5611 | { | |
5612 | fdh->elf.root.type = bfd_link_hash_undefined; | |
5613 | bfd_link_add_undef (&htab->elf.root, &fdh->elf.root); | |
5614 | } | |
5615 | else if (fh->elf.root.type == bfd_link_hash_defined | |
5616 | || fh->elf.root.type == bfd_link_hash_defweak) | |
5617 | { | |
5618 | _bfd_elf_link_hash_hide_symbol (info, &fdh->elf, TRUE); | |
5619 | } | |
908b32fc AM |
5620 | } |
5621 | ||
50bc7936 | 5622 | if (fdh != NULL |
f5385ebf | 5623 | && !fdh->elf.forced_local |
50bc7936 | 5624 | && (info->shared |
f5385ebf AM |
5625 | || fdh->elf.def_dynamic |
5626 | || fdh->elf.ref_dynamic | |
50bc7936 AM |
5627 | || (fdh->elf.root.type == bfd_link_hash_undefweak |
5628 | && ELF_ST_VISIBILITY (fdh->elf.other) == STV_DEFAULT))) | |
5629 | { | |
5630 | if (fdh->elf.dynindx == -1) | |
c152c796 | 5631 | if (! bfd_elf_link_record_dynamic_symbol (info, &fdh->elf)) |
50bc7936 | 5632 | return FALSE; |
f5385ebf AM |
5633 | fdh->elf.ref_regular |= fh->elf.ref_regular; |
5634 | fdh->elf.ref_dynamic |= fh->elf.ref_dynamic; | |
5635 | fdh->elf.ref_regular_nonweak |= fh->elf.ref_regular_nonweak; | |
5636 | fdh->elf.non_got_ref |= fh->elf.non_got_ref; | |
50bc7936 | 5637 | if (ELF_ST_VISIBILITY (fh->elf.other) == STV_DEFAULT) |
e86ce104 | 5638 | { |
40d16e0b | 5639 | move_plt_plist (fh, fdh); |
f5385ebf | 5640 | fdh->elf.needs_plt = 1; |
e86ce104 | 5641 | } |
50bc7936 | 5642 | fdh->is_func_descriptor = 1; |
34814b9f AM |
5643 | fdh->oh = fh; |
5644 | fh->oh = fdh; | |
e86ce104 AM |
5645 | } |
5646 | ||
50bc7936 AM |
5647 | /* Now that the info is on the function descriptor, clear the |
5648 | function code sym info. Any function code syms for which we | |
5649 | don't have a definition in a regular file, we force local. | |
5650 | This prevents a shared library from exporting syms that have | |
5651 | been imported from another library. Function code syms that | |
5652 | are really in the library we must leave global to prevent the | |
5653 | linker dragging in a definition from a static library. */ | |
93f3fa99 AM |
5654 | force_local = (!fh->elf.def_regular |
5655 | || fdh == NULL | |
5656 | || !fdh->elf.def_regular | |
5657 | || fdh->elf.forced_local); | |
50bc7936 AM |
5658 | _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local); |
5659 | ||
b34976b6 | 5660 | return TRUE; |
e86ce104 | 5661 | } |
40b8271b | 5662 | |
e86ce104 | 5663 | /* Called near the start of bfd_elf_size_dynamic_sections. We use |
82bd7b59 AM |
5664 | this hook to a) provide some gcc support functions, and b) transfer |
5665 | dynamic linking information gathered so far on function code symbol | |
5666 | entries, to their corresponding function descriptor symbol entries. */ | |
deb0e272 | 5667 | |
b34976b6 | 5668 | static bfd_boolean |
4ce794b7 AM |
5669 | ppc64_elf_func_desc_adjust (bfd *obfd ATTRIBUTE_UNUSED, |
5670 | struct bfd_link_info *info) | |
e86ce104 AM |
5671 | { |
5672 | struct ppc_link_hash_table *htab; | |
82bd7b59 | 5673 | unsigned int i; |
deb0e272 AM |
5674 | const struct sfpr_def_parms funcs[] = |
5675 | { | |
5676 | { "_savegpr0_", 14, 31, savegpr0, savegpr0_tail }, | |
5677 | { "_restgpr0_", 14, 29, restgpr0, restgpr0_tail }, | |
5678 | { "_restgpr0_", 30, 31, restgpr0, restgpr0_tail }, | |
5679 | { "_savegpr1_", 14, 31, savegpr1, savegpr1_tail }, | |
5680 | { "_restgpr1_", 14, 31, restgpr1, restgpr1_tail }, | |
5681 | { "_savefpr_", 14, 31, savefpr, savefpr0_tail }, | |
5682 | { "_restfpr_", 14, 29, restfpr, restfpr0_tail }, | |
5683 | { "_restfpr_", 30, 31, restfpr, restfpr0_tail }, | |
5684 | { "._savef", 14, 31, savefpr, savefpr1_tail }, | |
5685 | { "._restf", 14, 31, restfpr, restfpr1_tail }, | |
5686 | { "_savevr_", 20, 31, savevr, savevr_tail }, | |
5687 | { "_restvr_", 20, 31, restvr, restvr_tail } | |
5688 | }; | |
e86ce104 AM |
5689 | |
5690 | htab = ppc_hash_table (info); | |
82bd7b59 AM |
5691 | if (htab->sfpr == NULL) |
5692 | /* We don't have any relocs. */ | |
b34976b6 | 5693 | return TRUE; |
82bd7b59 | 5694 | |
deb0e272 AM |
5695 | /* Provide any missing _save* and _rest* functions. */ |
5696 | htab->sfpr->size = 0; | |
5697 | for (i = 0; i < sizeof (funcs) / sizeof (funcs[0]); i++) | |
5698 | if (!sfpr_define (info, &funcs[i])) | |
5699 | return FALSE; | |
82bd7b59 | 5700 | |
4ce794b7 | 5701 | elf_link_hash_traverse (&htab->elf, func_desc_adjust, info); |
805fc799 | 5702 | |
eea6121a | 5703 | if (htab->sfpr->size == 0) |
8423293d | 5704 | htab->sfpr->flags |= SEC_EXCLUDE; |
82bd7b59 | 5705 | |
b34976b6 | 5706 | return TRUE; |
e86ce104 AM |
5707 | } |
5708 | ||
5709 | /* Adjust a symbol defined by a dynamic object and referenced by a | |
5710 | regular object. The current definition is in some section of the | |
5711 | dynamic object, but we're not including those sections. We have to | |
5712 | change the definition to something the rest of the link can | |
5713 | understand. */ | |
5714 | ||
b34976b6 | 5715 | static bfd_boolean |
4ce794b7 AM |
5716 | ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info *info, |
5717 | struct elf_link_hash_entry *h) | |
e86ce104 AM |
5718 | { |
5719 | struct ppc_link_hash_table *htab; | |
e86ce104 AM |
5720 | asection *s; |
5721 | unsigned int power_of_two; | |
5722 | ||
5723 | htab = ppc_hash_table (info); | |
5724 | ||
5725 | /* Deal with function syms. */ | |
5726 | if (h->type == STT_FUNC | |
f5385ebf | 5727 | || h->needs_plt) |
e86ce104 AM |
5728 | { |
5729 | /* Clear procedure linkage table information for any symbol that | |
5730 | won't need a .plt entry. */ | |
411e1bfb AM |
5731 | struct plt_entry *ent; |
5732 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) | |
5733 | if (ent->plt.refcount > 0) | |
5734 | break; | |
8387904d | 5735 | if (ent == NULL |
9c7a29a3 AM |
5736 | || SYMBOL_CALLS_LOCAL (info, h) |
5737 | || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
5738 | && h->root.type == bfd_link_hash_undefweak)) | |
40b8271b | 5739 | { |
411e1bfb | 5740 | h->plt.plist = NULL; |
f5385ebf | 5741 | h->needs_plt = 0; |
40b8271b | 5742 | } |
5bd4f169 | 5743 | } |
bbd7ec4a | 5744 | else |
411e1bfb | 5745 | h->plt.plist = NULL; |
5bd4f169 AM |
5746 | |
5747 | /* If this is a weak symbol, and there is a real definition, the | |
5748 | processor independent code will have arranged for us to see the | |
5749 | real definition first, and we can just use the same value. */ | |
f6e332e6 | 5750 | if (h->u.weakdef != NULL) |
5bd4f169 | 5751 | { |
f6e332e6 AM |
5752 | BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined |
5753 | || h->u.weakdef->root.type == bfd_link_hash_defweak); | |
5754 | h->root.u.def.section = h->u.weakdef->root.u.def.section; | |
5755 | h->root.u.def.value = h->u.weakdef->root.u.def.value; | |
a23b6845 | 5756 | if (ELIMINATE_COPY_RELOCS) |
f6e332e6 | 5757 | h->non_got_ref = h->u.weakdef->non_got_ref; |
b34976b6 | 5758 | return TRUE; |
5bd4f169 AM |
5759 | } |
5760 | ||
5bd4f169 AM |
5761 | /* If we are creating a shared library, we must presume that the |
5762 | only references to the symbol are via the global offset table. | |
5763 | For such cases we need not do anything here; the relocations will | |
5764 | be handled correctly by relocate_section. */ | |
5765 | if (info->shared) | |
b34976b6 | 5766 | return TRUE; |
5bd4f169 | 5767 | |
65f38f15 AM |
5768 | /* If there are no references to this symbol that do not use the |
5769 | GOT, we don't need to generate a copy reloc. */ | |
f5385ebf | 5770 | if (!h->non_got_ref) |
b34976b6 | 5771 | return TRUE; |
65f38f15 | 5772 | |
f4656909 | 5773 | if (ELIMINATE_COPY_RELOCS) |
65f38f15 | 5774 | { |
f4656909 AM |
5775 | struct ppc_link_hash_entry * eh; |
5776 | struct ppc_dyn_relocs *p; | |
65f38f15 | 5777 | |
f4656909 AM |
5778 | eh = (struct ppc_link_hash_entry *) h; |
5779 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
5780 | { | |
5781 | s = p->sec->output_section; | |
5782 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
5783 | break; | |
5784 | } | |
5785 | ||
5786 | /* If we didn't find any dynamic relocs in read-only sections, then | |
5787 | we'll be keeping the dynamic relocs and avoiding the copy reloc. */ | |
5788 | if (p == NULL) | |
5789 | { | |
f5385ebf | 5790 | h->non_got_ref = 0; |
f4656909 AM |
5791 | return TRUE; |
5792 | } | |
65f38f15 AM |
5793 | } |
5794 | ||
5d35169e | 5795 | if (h->plt.plist != NULL) |
97b639ba AM |
5796 | { |
5797 | /* We should never get here, but unfortunately there are versions | |
5798 | of gcc out there that improperly (for this ABI) put initialized | |
5799 | function pointers, vtable refs and suchlike in read-only | |
5800 | sections. Allow them to proceed, but warn that this might | |
5801 | break at runtime. */ | |
5802 | (*_bfd_error_handler) | |
5803 | (_("copy reloc against `%s' requires lazy plt linking; " | |
5804 | "avoid setting LD_BIND_NOW=1 or upgrade gcc"), | |
5805 | h->root.root.string); | |
5806 | } | |
5d35169e AM |
5807 | |
5808 | /* This is a reference to a symbol defined by a dynamic object which | |
5809 | is not a function. */ | |
5810 | ||
909272ee AM |
5811 | if (h->size == 0) |
5812 | { | |
5813 | (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"), | |
5814 | h->root.root.string); | |
5815 | return TRUE; | |
5816 | } | |
5817 | ||
5bd4f169 AM |
5818 | /* We must allocate the symbol in our .dynbss section, which will |
5819 | become part of the .bss section of the executable. There will be | |
5820 | an entry for this symbol in the .dynsym section. The dynamic | |
5821 | object will contain position independent code, so all references | |
5822 | from the dynamic object to this symbol will go through the global | |
5823 | offset table. The dynamic linker will use the .dynsym entry to | |
5824 | determine the address it must put in the global offset table, so | |
5825 | both the dynamic object and the regular object will refer to the | |
5826 | same memory location for the variable. */ | |
5bd4f169 | 5827 | |
04c9666a AM |
5828 | /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker |
5829 | to copy the initial value out of the dynamic object and into the | |
5bd4f169 AM |
5830 | runtime process image. We need to remember the offset into the |
5831 | .rela.bss section we are going to use. */ | |
5832 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) | |
5833 | { | |
eea6121a | 5834 | htab->relbss->size += sizeof (Elf64_External_Rela); |
f5385ebf | 5835 | h->needs_copy = 1; |
5bd4f169 AM |
5836 | } |
5837 | ||
5838 | /* We need to figure out the alignment required for this symbol. I | |
5839 | have no idea how ELF linkers handle this. */ | |
5840 | power_of_two = bfd_log2 (h->size); | |
5841 | if (power_of_two > 4) | |
5842 | power_of_two = 4; | |
5843 | ||
5844 | /* Apply the required alignment. */ | |
4ce794b7 | 5845 | s = htab->dynbss; |
eea6121a | 5846 | s->size = BFD_ALIGN (s->size, (bfd_size_type) (1 << power_of_two)); |
65f38f15 | 5847 | if (power_of_two > bfd_get_section_alignment (htab->elf.dynobj, s)) |
5bd4f169 | 5848 | { |
65f38f15 | 5849 | if (! bfd_set_section_alignment (htab->elf.dynobj, s, power_of_two)) |
b34976b6 | 5850 | return FALSE; |
5bd4f169 AM |
5851 | } |
5852 | ||
5853 | /* Define the symbol as being at this point in the section. */ | |
5854 | h->root.u.def.section = s; | |
eea6121a | 5855 | h->root.u.def.value = s->size; |
5bd4f169 AM |
5856 | |
5857 | /* Increment the section size to make room for the symbol. */ | |
eea6121a | 5858 | s->size += h->size; |
5bd4f169 | 5859 | |
b34976b6 | 5860 | return TRUE; |
5bd4f169 AM |
5861 | } |
5862 | ||
e86ce104 AM |
5863 | /* If given a function descriptor symbol, hide both the function code |
5864 | sym and the descriptor. */ | |
5865 | static void | |
4ce794b7 AM |
5866 | ppc64_elf_hide_symbol (struct bfd_link_info *info, |
5867 | struct elf_link_hash_entry *h, | |
5868 | bfd_boolean force_local) | |
e86ce104 | 5869 | { |
34814b9f | 5870 | struct ppc_link_hash_entry *eh; |
e86ce104 AM |
5871 | _bfd_elf_link_hash_hide_symbol (info, h, force_local); |
5872 | ||
34814b9f AM |
5873 | eh = (struct ppc_link_hash_entry *) h; |
5874 | if (eh->is_func_descriptor) | |
e86ce104 | 5875 | { |
34814b9f | 5876 | struct ppc_link_hash_entry *fh = eh->oh; |
e86ce104 | 5877 | |
721956f4 | 5878 | if (fh == NULL) |
d1329ca3 AM |
5879 | { |
5880 | const char *p, *q; | |
5881 | struct ppc_link_hash_table *htab; | |
5882 | char save; | |
5883 | ||
5884 | /* We aren't supposed to use alloca in BFD because on | |
5885 | systems which do not have alloca the version in libiberty | |
5886 | calls xmalloc, which might cause the program to crash | |
5887 | when it runs out of memory. This function doesn't have a | |
5888 | return status, so there's no way to gracefully return an | |
5889 | error. So cheat. We know that string[-1] can be safely | |
34814b9f AM |
5890 | accessed; It's either a string in an ELF string table, |
5891 | or allocated in an objalloc structure. */ | |
d1329ca3 | 5892 | |
34814b9f | 5893 | p = eh->elf.root.root.string - 1; |
d1329ca3 AM |
5894 | save = *p; |
5895 | *(char *) p = '.'; | |
5896 | htab = ppc_hash_table (info); | |
34814b9f AM |
5897 | fh = (struct ppc_link_hash_entry *) |
5898 | elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE); | |
d1329ca3 AM |
5899 | *(char *) p = save; |
5900 | ||
5901 | /* Unfortunately, if it so happens that the string we were | |
5902 | looking for was allocated immediately before this string, | |
5903 | then we overwrote the string terminator. That's the only | |
5904 | reason the lookup should fail. */ | |
5905 | if (fh == NULL) | |
5906 | { | |
34814b9f AM |
5907 | q = eh->elf.root.root.string + strlen (eh->elf.root.root.string); |
5908 | while (q >= eh->elf.root.root.string && *q == *p) | |
d1329ca3 | 5909 | --q, --p; |
34814b9f AM |
5910 | if (q < eh->elf.root.root.string && *p == '.') |
5911 | fh = (struct ppc_link_hash_entry *) | |
5912 | elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE); | |
d1329ca3 AM |
5913 | } |
5914 | if (fh != NULL) | |
5915 | { | |
34814b9f AM |
5916 | eh->oh = fh; |
5917 | fh->oh = eh; | |
d1329ca3 AM |
5918 | } |
5919 | } | |
e86ce104 | 5920 | if (fh != NULL) |
34814b9f | 5921 | _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local); |
e86ce104 AM |
5922 | } |
5923 | } | |
5924 | ||
411e1bfb | 5925 | static bfd_boolean |
8843416a AM |
5926 | get_sym_h (struct elf_link_hash_entry **hp, |
5927 | Elf_Internal_Sym **symp, | |
5928 | asection **symsecp, | |
5929 | char **tls_maskp, | |
5930 | Elf_Internal_Sym **locsymsp, | |
5931 | unsigned long r_symndx, | |
5932 | bfd *ibfd) | |
411e1bfb AM |
5933 | { |
5934 | Elf_Internal_Shdr *symtab_hdr = &elf_tdata (ibfd)->symtab_hdr; | |
5935 | ||
5936 | if (r_symndx >= symtab_hdr->sh_info) | |
5937 | { | |
5938 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd); | |
5939 | struct elf_link_hash_entry *h; | |
5940 | ||
5941 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
5942 | while (h->root.type == bfd_link_hash_indirect | |
5943 | || h->root.type == bfd_link_hash_warning) | |
5944 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
5945 | ||
5946 | if (hp != NULL) | |
5947 | *hp = h; | |
5948 | ||
5949 | if (symp != NULL) | |
5950 | *symp = NULL; | |
5951 | ||
5952 | if (symsecp != NULL) | |
5953 | { | |
5954 | asection *symsec = NULL; | |
5955 | if (h->root.type == bfd_link_hash_defined | |
5956 | || h->root.type == bfd_link_hash_defweak) | |
5957 | symsec = h->root.u.def.section; | |
5958 | *symsecp = symsec; | |
5959 | } | |
5960 | ||
e7b938ca | 5961 | if (tls_maskp != NULL) |
411e1bfb AM |
5962 | { |
5963 | struct ppc_link_hash_entry *eh; | |
5964 | ||
5965 | eh = (struct ppc_link_hash_entry *) h; | |
e7b938ca | 5966 | *tls_maskp = &eh->tls_mask; |
411e1bfb AM |
5967 | } |
5968 | } | |
5969 | else | |
5970 | { | |
5971 | Elf_Internal_Sym *sym; | |
5972 | Elf_Internal_Sym *locsyms = *locsymsp; | |
5973 | ||
5974 | if (locsyms == NULL) | |
5975 | { | |
5976 | locsyms = (Elf_Internal_Sym *) symtab_hdr->contents; | |
5977 | if (locsyms == NULL) | |
5978 | locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr, | |
5979 | symtab_hdr->sh_info, | |
5980 | 0, NULL, NULL, NULL); | |
5981 | if (locsyms == NULL) | |
5982 | return FALSE; | |
5983 | *locsymsp = locsyms; | |
5984 | } | |
5985 | sym = locsyms + r_symndx; | |
5986 | ||
5987 | if (hp != NULL) | |
5988 | *hp = NULL; | |
5989 | ||
5990 | if (symp != NULL) | |
5991 | *symp = sym; | |
5992 | ||
5993 | if (symsecp != NULL) | |
5994 | { | |
5995 | asection *symsec = NULL; | |
5996 | if ((sym->st_shndx != SHN_UNDEF | |
5997 | && sym->st_shndx < SHN_LORESERVE) | |
5998 | || sym->st_shndx > SHN_HIRESERVE) | |
5999 | symsec = bfd_section_from_elf_index (ibfd, sym->st_shndx); | |
6000 | *symsecp = symsec; | |
6001 | } | |
6002 | ||
e7b938ca | 6003 | if (tls_maskp != NULL) |
411e1bfb AM |
6004 | { |
6005 | struct got_entry **lgot_ents; | |
e7b938ca | 6006 | char *tls_mask; |
411e1bfb | 6007 | |
e7b938ca | 6008 | tls_mask = NULL; |
411e1bfb AM |
6009 | lgot_ents = elf_local_got_ents (ibfd); |
6010 | if (lgot_ents != NULL) | |
6011 | { | |
e7b938ca AM |
6012 | char *lgot_masks = (char *) (lgot_ents + symtab_hdr->sh_info); |
6013 | tls_mask = &lgot_masks[r_symndx]; | |
411e1bfb | 6014 | } |
e7b938ca | 6015 | *tls_maskp = tls_mask; |
411e1bfb AM |
6016 | } |
6017 | } | |
6018 | return TRUE; | |
6019 | } | |
6020 | ||
e7b938ca | 6021 | /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on |
951fd09b | 6022 | error, 2 on a toc GD type suitable for optimization, 3 on a toc LD |
ad8e1ba5 | 6023 | type suitable for optimization, and 1 otherwise. */ |
951fd09b AM |
6024 | |
6025 | static int | |
0d4792f7 AM |
6026 | get_tls_mask (char **tls_maskp, unsigned long *toc_symndx, |
6027 | Elf_Internal_Sym **locsymsp, | |
4ce794b7 | 6028 | const Elf_Internal_Rela *rel, bfd *ibfd) |
411e1bfb AM |
6029 | { |
6030 | unsigned long r_symndx; | |
0d4792f7 | 6031 | int next_r; |
411e1bfb AM |
6032 | struct elf_link_hash_entry *h; |
6033 | Elf_Internal_Sym *sym; | |
6034 | asection *sec; | |
6035 | bfd_vma off; | |
6036 | ||
6037 | r_symndx = ELF64_R_SYM (rel->r_info); | |
e7b938ca | 6038 | if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd)) |
951fd09b | 6039 | return 0; |
411e1bfb | 6040 | |
e7b938ca | 6041 | if ((*tls_maskp != NULL && **tls_maskp != 0) |
411e1bfb AM |
6042 | || sec == NULL |
6043 | || ppc64_elf_section_data (sec)->t_symndx == NULL) | |
951fd09b | 6044 | return 1; |
411e1bfb AM |
6045 | |
6046 | /* Look inside a TOC section too. */ | |
6047 | if (h != NULL) | |
6048 | { | |
6049 | BFD_ASSERT (h->root.type == bfd_link_hash_defined); | |
6050 | off = h->root.u.def.value; | |
6051 | } | |
6052 | else | |
6053 | off = sym->st_value; | |
6054 | off += rel->r_addend; | |
6055 | BFD_ASSERT (off % 8 == 0); | |
6056 | r_symndx = ppc64_elf_section_data (sec)->t_symndx[off / 8]; | |
951fd09b | 6057 | next_r = ppc64_elf_section_data (sec)->t_symndx[off / 8 + 1]; |
e7b938ca | 6058 | if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd)) |
951fd09b | 6059 | return 0; |
0d4792f7 AM |
6060 | if (toc_symndx != NULL) |
6061 | *toc_symndx = r_symndx; | |
6062 | if ((h == NULL | |
6063 | || ((h->root.type == bfd_link_hash_defined | |
6064 | || h->root.type == bfd_link_hash_defweak) | |
f5385ebf | 6065 | && !h->def_dynamic)) |
0d4792f7 AM |
6066 | && (next_r == -1 || next_r == -2)) |
6067 | return 1 - next_r; | |
951fd09b | 6068 | return 1; |
411e1bfb AM |
6069 | } |
6070 | ||
754021d0 | 6071 | /* Adjust all global syms defined in opd sections. In gcc generated |
8387904d | 6072 | code for the old ABI, these will already have been done. */ |
754021d0 AM |
6073 | |
6074 | static bfd_boolean | |
6075 | adjust_opd_syms (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED) | |
6076 | { | |
6077 | struct ppc_link_hash_entry *eh; | |
6078 | asection *sym_sec; | |
6079 | long *opd_adjust; | |
6080 | ||
6081 | if (h->root.type == bfd_link_hash_indirect) | |
6082 | return TRUE; | |
6083 | ||
6084 | if (h->root.type == bfd_link_hash_warning) | |
6085 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
6086 | ||
6087 | if (h->root.type != bfd_link_hash_defined | |
6088 | && h->root.type != bfd_link_hash_defweak) | |
6089 | return TRUE; | |
6090 | ||
6091 | eh = (struct ppc_link_hash_entry *) h; | |
6092 | if (eh->adjust_done) | |
6093 | return TRUE; | |
6094 | ||
6095 | sym_sec = eh->elf.root.u.def.section; | |
4025353c AM |
6096 | opd_adjust = get_opd_info (sym_sec); |
6097 | if (opd_adjust != NULL) | |
754021d0 | 6098 | { |
3f764659 | 6099 | long adjust = opd_adjust[eh->elf.root.u.def.value / 8]; |
4025353c AM |
6100 | if (adjust == -1) |
6101 | { | |
6102 | /* This entry has been deleted. */ | |
433817dd | 6103 | asection *dsec = ppc64_elf_tdata (sym_sec->owner)->u.deleted_section; |
81688140 AM |
6104 | if (dsec == NULL) |
6105 | { | |
6106 | for (dsec = sym_sec->owner->sections; dsec; dsec = dsec->next) | |
6107 | if (elf_discarded_section (dsec)) | |
6108 | { | |
433817dd | 6109 | ppc64_elf_tdata (sym_sec->owner)->u.deleted_section = dsec; |
81688140 AM |
6110 | break; |
6111 | } | |
6112 | } | |
4025353c | 6113 | eh->elf.root.u.def.value = 0; |
81688140 | 6114 | eh->elf.root.u.def.section = dsec; |
4025353c AM |
6115 | } |
6116 | else | |
6117 | eh->elf.root.u.def.value += adjust; | |
754021d0 AM |
6118 | eh->adjust_done = 1; |
6119 | } | |
6120 | return TRUE; | |
6121 | } | |
6122 | ||
8c1d1bb8 AM |
6123 | /* Handles decrementing dynamic reloc counts for the reloc specified by |
6124 | R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM_SEC | |
6125 | have already been determined. */ | |
6126 | ||
6127 | static bfd_boolean | |
6128 | dec_dynrel_count (bfd_vma r_info, | |
6129 | asection *sec, | |
6130 | struct bfd_link_info *info, | |
6131 | Elf_Internal_Sym **local_syms, | |
6132 | struct elf_link_hash_entry *h, | |
6133 | asection *sym_sec) | |
6134 | { | |
6135 | enum elf_ppc64_reloc_type r_type; | |
6136 | struct ppc_dyn_relocs *p; | |
6137 | struct ppc_dyn_relocs **pp; | |
6138 | ||
6139 | /* Can this reloc be dynamic? This switch, and later tests here | |
6140 | should be kept in sync with the code in check_relocs. */ | |
6141 | r_type = ELF64_R_TYPE (r_info); | |
6142 | switch (r_type) | |
6143 | { | |
6144 | default: | |
6145 | return TRUE; | |
6146 | ||
6147 | case R_PPC64_TPREL16: | |
6148 | case R_PPC64_TPREL16_LO: | |
6149 | case R_PPC64_TPREL16_HI: | |
6150 | case R_PPC64_TPREL16_HA: | |
6151 | case R_PPC64_TPREL16_DS: | |
6152 | case R_PPC64_TPREL16_LO_DS: | |
6153 | case R_PPC64_TPREL16_HIGHER: | |
6154 | case R_PPC64_TPREL16_HIGHERA: | |
6155 | case R_PPC64_TPREL16_HIGHEST: | |
6156 | case R_PPC64_TPREL16_HIGHESTA: | |
6157 | if (!info->shared) | |
6158 | return TRUE; | |
6159 | ||
6160 | case R_PPC64_TPREL64: | |
6161 | case R_PPC64_DTPMOD64: | |
6162 | case R_PPC64_DTPREL64: | |
6163 | case R_PPC64_ADDR64: | |
6164 | case R_PPC64_REL30: | |
6165 | case R_PPC64_REL32: | |
6166 | case R_PPC64_REL64: | |
6167 | case R_PPC64_ADDR14: | |
6168 | case R_PPC64_ADDR14_BRNTAKEN: | |
6169 | case R_PPC64_ADDR14_BRTAKEN: | |
6170 | case R_PPC64_ADDR16: | |
6171 | case R_PPC64_ADDR16_DS: | |
6172 | case R_PPC64_ADDR16_HA: | |
6173 | case R_PPC64_ADDR16_HI: | |
6174 | case R_PPC64_ADDR16_HIGHER: | |
6175 | case R_PPC64_ADDR16_HIGHERA: | |
6176 | case R_PPC64_ADDR16_HIGHEST: | |
6177 | case R_PPC64_ADDR16_HIGHESTA: | |
6178 | case R_PPC64_ADDR16_LO: | |
6179 | case R_PPC64_ADDR16_LO_DS: | |
6180 | case R_PPC64_ADDR24: | |
6181 | case R_PPC64_ADDR32: | |
6182 | case R_PPC64_UADDR16: | |
6183 | case R_PPC64_UADDR32: | |
6184 | case R_PPC64_UADDR64: | |
6185 | case R_PPC64_TOC: | |
6186 | break; | |
6187 | } | |
6188 | ||
6189 | if (local_syms != NULL) | |
6190 | { | |
6191 | unsigned long r_symndx; | |
6192 | Elf_Internal_Sym *sym; | |
6193 | bfd *ibfd = sec->owner; | |
6194 | ||
6195 | r_symndx = ELF64_R_SYM (r_info); | |
6196 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, local_syms, r_symndx, ibfd)) | |
6197 | return FALSE; | |
6198 | } | |
6199 | ||
6200 | if ((info->shared | |
6201 | && (MUST_BE_DYN_RELOC (r_type) | |
6202 | || (h != NULL | |
6203 | && (!info->symbolic | |
6204 | || h->root.type == bfd_link_hash_defweak | |
6205 | || !h->def_regular)))) | |
6206 | || (ELIMINATE_COPY_RELOCS | |
6207 | && !info->shared | |
6208 | && h != NULL | |
6209 | && (h->root.type == bfd_link_hash_defweak | |
6210 | || !h->def_regular))) | |
6211 | ; | |
6212 | else | |
6213 | return TRUE; | |
6214 | ||
6215 | if (h != NULL) | |
6216 | pp = &((struct ppc_link_hash_entry *) h)->dyn_relocs; | |
8c1d1bb8 | 6217 | else |
6edfbbad | 6218 | { |
60124e18 AM |
6219 | if (sym_sec != NULL) |
6220 | { | |
6221 | void *vpp = &elf_section_data (sym_sec)->local_dynrel; | |
6222 | pp = (struct ppc_dyn_relocs **) vpp; | |
6223 | } | |
6224 | else | |
6225 | { | |
6226 | void *vpp = &elf_section_data (sec)->local_dynrel; | |
6227 | pp = (struct ppc_dyn_relocs **) vpp; | |
6228 | } | |
6229 | ||
6230 | /* elf_gc_sweep may have already removed all dyn relocs associated | |
6231 | with local syms for a given section. Don't report a dynreloc | |
6232 | miscount. */ | |
6233 | if (*pp == NULL) | |
6234 | return TRUE; | |
6edfbbad | 6235 | } |
8c1d1bb8 AM |
6236 | |
6237 | while ((p = *pp) != NULL) | |
6238 | { | |
6239 | if (p->sec == sec) | |
6240 | { | |
6241 | if (!MUST_BE_DYN_RELOC (r_type)) | |
6242 | p->pc_count -= 1; | |
6243 | p->count -= 1; | |
6244 | if (p->count == 0) | |
6245 | *pp = p->next; | |
6246 | return TRUE; | |
6247 | } | |
6248 | pp = &p->next; | |
6249 | } | |
6250 | ||
6251 | (*_bfd_error_handler) (_("dynreloc miscount for %B, section %A"), | |
6252 | sec->owner, sec); | |
6253 | bfd_set_error (bfd_error_bad_value); | |
6254 | return FALSE; | |
6255 | } | |
6256 | ||
754021d0 AM |
6257 | /* Remove unused Official Procedure Descriptor entries. Currently we |
6258 | only remove those associated with functions in discarded link-once | |
6259 | sections, or weakly defined functions that have been overridden. It | |
6260 | would be possible to remove many more entries for statically linked | |
6261 | applications. */ | |
6262 | ||
b34976b6 | 6263 | bfd_boolean |
3f764659 | 6264 | ppc64_elf_edit_opd (bfd *obfd, struct bfd_link_info *info, |
b4f4e59f | 6265 | bfd_boolean no_opd_opt, |
3f764659 | 6266 | bfd_boolean non_overlapping) |
1e2f5b6e AM |
6267 | { |
6268 | bfd *ibfd; | |
754021d0 | 6269 | bfd_boolean some_edited = FALSE; |
3f764659 | 6270 | asection *need_pad = NULL; |
1e2f5b6e | 6271 | |
411e1bfb | 6272 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) |
1e2f5b6e AM |
6273 | { |
6274 | asection *sec; | |
6275 | Elf_Internal_Rela *relstart, *rel, *relend; | |
6276 | Elf_Internal_Shdr *symtab_hdr; | |
6cdc0ccc | 6277 | Elf_Internal_Sym *local_syms; |
1e2f5b6e AM |
6278 | struct elf_link_hash_entry **sym_hashes; |
6279 | bfd_vma offset; | |
d6fe2dc1 | 6280 | bfd_size_type amt; |
4025353c | 6281 | long *opd_adjust; |
3f764659 JJ |
6282 | bfd_boolean need_edit, add_aux_fields; |
6283 | bfd_size_type cnt_16b = 0; | |
1e2f5b6e AM |
6284 | |
6285 | sec = bfd_get_section_by_name (ibfd, ".opd"); | |
46de2a7c | 6286 | if (sec == NULL || sec->size == 0) |
1e2f5b6e AM |
6287 | continue; |
6288 | ||
3f764659 | 6289 | amt = sec->size * sizeof (long) / 8; |
4025353c AM |
6290 | opd_adjust = get_opd_info (sec); |
6291 | if (opd_adjust == NULL) | |
d6fe2dc1 | 6292 | { |
4b85d634 AM |
6293 | /* check_relocs hasn't been called. Must be a ld -r link |
6294 | or --just-symbols object. */ | |
b4f4e59f | 6295 | opd_adjust = bfd_alloc (obfd, amt); |
46de2a7c AM |
6296 | if (opd_adjust == NULL) |
6297 | return FALSE; | |
4025353c | 6298 | ppc64_elf_section_data (sec)->opd.adjust = opd_adjust; |
d6fe2dc1 | 6299 | } |
4025353c | 6300 | memset (opd_adjust, 0, amt); |
1e2f5b6e | 6301 | |
b4f4e59f AM |
6302 | if (no_opd_opt) |
6303 | continue; | |
6304 | ||
4b85d634 AM |
6305 | if (sec->sec_info_type == ELF_INFO_TYPE_JUST_SYMS) |
6306 | continue; | |
6307 | ||
1e2f5b6e AM |
6308 | if (sec->output_section == bfd_abs_section_ptr) |
6309 | continue; | |
6310 | ||
6311 | /* Look through the section relocs. */ | |
6312 | if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0) | |
6313 | continue; | |
6314 | ||
6cdc0ccc | 6315 | local_syms = NULL; |
1e2f5b6e AM |
6316 | symtab_hdr = &elf_tdata (ibfd)->symtab_hdr; |
6317 | sym_hashes = elf_sym_hashes (ibfd); | |
6318 | ||
6319 | /* Read the relocations. */ | |
4ce794b7 | 6320 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, |
45d6a902 | 6321 | info->keep_memory); |
1e2f5b6e | 6322 | if (relstart == NULL) |
b34976b6 | 6323 | return FALSE; |
1e2f5b6e AM |
6324 | |
6325 | /* First run through the relocs to check they are sane, and to | |
6326 | determine whether we need to edit this opd section. */ | |
b34976b6 | 6327 | need_edit = FALSE; |
3f764659 | 6328 | need_pad = sec; |
1e2f5b6e AM |
6329 | offset = 0; |
6330 | relend = relstart + sec->reloc_count; | |
50bc7936 | 6331 | for (rel = relstart; rel < relend; ) |
1e2f5b6e | 6332 | { |
04c9666a | 6333 | enum elf_ppc64_reloc_type r_type; |
1e2f5b6e AM |
6334 | unsigned long r_symndx; |
6335 | asection *sym_sec; | |
6336 | struct elf_link_hash_entry *h; | |
6337 | Elf_Internal_Sym *sym; | |
6338 | ||
3f764659 | 6339 | /* .opd contains a regular array of 16 or 24 byte entries. We're |
1e2f5b6e AM |
6340 | only interested in the reloc pointing to a function entry |
6341 | point. */ | |
50bc7936 AM |
6342 | if (rel->r_offset != offset |
6343 | || rel + 1 >= relend | |
6344 | || (rel + 1)->r_offset != offset + 8) | |
1e2f5b6e AM |
6345 | { |
6346 | /* If someone messes with .opd alignment then after a | |
6347 | "ld -r" we might have padding in the middle of .opd. | |
6348 | Also, there's nothing to prevent someone putting | |
6349 | something silly in .opd with the assembler. No .opd | |
b34976b6 | 6350 | optimization for them! */ |
3f764659 | 6351 | broken_opd: |
1e2f5b6e | 6352 | (*_bfd_error_handler) |
d003868e | 6353 | (_("%B: .opd is not a regular array of opd entries"), ibfd); |
b34976b6 | 6354 | need_edit = FALSE; |
1e2f5b6e AM |
6355 | break; |
6356 | } | |
6357 | ||
50bc7936 AM |
6358 | if ((r_type = ELF64_R_TYPE (rel->r_info)) != R_PPC64_ADDR64 |
6359 | || (r_type = ELF64_R_TYPE ((rel + 1)->r_info)) != R_PPC64_TOC) | |
6360 | { | |
6361 | (*_bfd_error_handler) | |
d003868e AM |
6362 | (_("%B: unexpected reloc type %u in .opd section"), |
6363 | ibfd, r_type); | |
50bc7936 AM |
6364 | need_edit = FALSE; |
6365 | break; | |
6366 | } | |
6367 | ||
1e2f5b6e | 6368 | r_symndx = ELF64_R_SYM (rel->r_info); |
411e1bfb AM |
6369 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, |
6370 | r_symndx, ibfd)) | |
50bc7936 | 6371 | goto error_ret; |
1e2f5b6e AM |
6372 | |
6373 | if (sym_sec == NULL || sym_sec->owner == NULL) | |
6374 | { | |
411e1bfb AM |
6375 | const char *sym_name; |
6376 | if (h != NULL) | |
6377 | sym_name = h->root.root.string; | |
6378 | else | |
26c61ae5 L |
6379 | sym_name = bfd_elf_sym_name (ibfd, symtab_hdr, sym, |
6380 | sym_sec); | |
411e1bfb | 6381 | |
1e2f5b6e | 6382 | (*_bfd_error_handler) |
d003868e AM |
6383 | (_("%B: undefined sym `%s' in .opd section"), |
6384 | ibfd, sym_name); | |
b34976b6 | 6385 | need_edit = FALSE; |
1e2f5b6e AM |
6386 | break; |
6387 | } | |
6388 | ||
51020317 AM |
6389 | /* opd entries are always for functions defined in the |
6390 | current input bfd. If the symbol isn't defined in the | |
6391 | input bfd, then we won't be using the function in this | |
6392 | bfd; It must be defined in a linkonce section in another | |
6393 | bfd, or is weak. It's also possible that we are | |
6394 | discarding the function due to a linker script /DISCARD/, | |
6395 | which we test for via the output_section. */ | |
6396 | if (sym_sec->owner != ibfd | |
6397 | || sym_sec->output_section == bfd_abs_section_ptr) | |
b34976b6 | 6398 | need_edit = TRUE; |
1e2f5b6e | 6399 | |
50bc7936 | 6400 | rel += 2; |
3f764659 JJ |
6401 | if (rel == relend |
6402 | || (rel + 1 == relend && rel->r_offset == offset + 16)) | |
6403 | { | |
6404 | if (sec->size == offset + 24) | |
6405 | { | |
6406 | need_pad = NULL; | |
6407 | break; | |
6408 | } | |
6409 | if (rel == relend && sec->size == offset + 16) | |
6410 | { | |
6411 | cnt_16b++; | |
6412 | break; | |
6413 | } | |
6414 | goto broken_opd; | |
6415 | } | |
6416 | ||
6417 | if (rel->r_offset == offset + 24) | |
6418 | offset += 24; | |
6419 | else if (rel->r_offset != offset + 16) | |
6420 | goto broken_opd; | |
6421 | else if (rel + 1 < relend | |
6422 | && ELF64_R_TYPE (rel[0].r_info) == R_PPC64_ADDR64 | |
6423 | && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOC) | |
6424 | { | |
6425 | offset += 16; | |
6426 | cnt_16b++; | |
6427 | } | |
6428 | else if (rel + 2 < relend | |
6429 | && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_ADDR64 | |
6430 | && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_TOC) | |
6431 | { | |
6432 | offset += 24; | |
6433 | rel += 1; | |
6434 | } | |
6435 | else | |
6436 | goto broken_opd; | |
1e2f5b6e AM |
6437 | } |
6438 | ||
3f764659 JJ |
6439 | add_aux_fields = non_overlapping && cnt_16b > 0; |
6440 | ||
6441 | if (need_edit || add_aux_fields) | |
1e2f5b6e AM |
6442 | { |
6443 | Elf_Internal_Rela *write_rel; | |
6444 | bfd_byte *rptr, *wptr; | |
3f764659 | 6445 | bfd_byte *new_contents = NULL; |
b34976b6 | 6446 | bfd_boolean skip; |
3f764659 | 6447 | long opd_ent_size; |
1e2f5b6e AM |
6448 | |
6449 | /* This seems a waste of time as input .opd sections are all | |
6450 | zeros as generated by gcc, but I suppose there's no reason | |
6451 | this will always be so. We might start putting something in | |
6452 | the third word of .opd entries. */ | |
6453 | if ((sec->flags & SEC_IN_MEMORY) == 0) | |
6454 | { | |
eea6121a AM |
6455 | bfd_byte *loc; |
6456 | if (!bfd_malloc_and_get_section (ibfd, sec, &loc)) | |
6cdc0ccc | 6457 | { |
eea6121a AM |
6458 | if (loc != NULL) |
6459 | free (loc); | |
50bc7936 | 6460 | error_ret: |
6cdc0ccc AM |
6461 | if (local_syms != NULL |
6462 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
6463 | free (local_syms); | |
6cdc0ccc AM |
6464 | if (elf_section_data (sec)->relocs != relstart) |
6465 | free (relstart); | |
b34976b6 | 6466 | return FALSE; |
6cdc0ccc | 6467 | } |
1e2f5b6e AM |
6468 | sec->contents = loc; |
6469 | sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS); | |
6470 | } | |
6471 | ||
6472 | elf_section_data (sec)->relocs = relstart; | |
6473 | ||
3f764659 | 6474 | new_contents = sec->contents; |
3f764659 JJ |
6475 | if (add_aux_fields) |
6476 | { | |
6477 | new_contents = bfd_malloc (sec->size + cnt_16b * 8); | |
6478 | if (new_contents == NULL) | |
6479 | return FALSE; | |
6480 | need_pad = FALSE; | |
3f764659 | 6481 | } |
b4f4e59f AM |
6482 | wptr = new_contents; |
6483 | rptr = sec->contents; | |
3f764659 | 6484 | |
1e2f5b6e | 6485 | write_rel = relstart; |
b34976b6 | 6486 | skip = FALSE; |
1e2f5b6e | 6487 | offset = 0; |
3f764659 | 6488 | opd_ent_size = 0; |
1e2f5b6e AM |
6489 | for (rel = relstart; rel < relend; rel++) |
6490 | { | |
50bc7936 AM |
6491 | unsigned long r_symndx; |
6492 | asection *sym_sec; | |
6493 | struct elf_link_hash_entry *h; | |
6494 | Elf_Internal_Sym *sym; | |
6495 | ||
6496 | r_symndx = ELF64_R_SYM (rel->r_info); | |
6497 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
d37c89e5 | 6498 | r_symndx, ibfd)) |
50bc7936 AM |
6499 | goto error_ret; |
6500 | ||
1e2f5b6e AM |
6501 | if (rel->r_offset == offset) |
6502 | { | |
50bc7936 | 6503 | struct ppc_link_hash_entry *fdh = NULL; |
3f764659 JJ |
6504 | |
6505 | /* See if the .opd entry is full 24 byte or | |
6506 | 16 byte (with fd_aux entry overlapped with next | |
6507 | fd_func). */ | |
6508 | opd_ent_size = 24; | |
6509 | if ((rel + 2 == relend && sec->size == offset + 16) | |
6510 | || (rel + 3 < relend | |
6511 | && rel[2].r_offset == offset + 16 | |
6512 | && rel[3].r_offset == offset + 24 | |
6513 | && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_ADDR64 | |
6514 | && ELF64_R_TYPE (rel[3].r_info) == R_PPC64_TOC)) | |
6515 | opd_ent_size = 16; | |
6516 | ||
4025353c AM |
6517 | if (h != NULL |
6518 | && h->root.root.string[0] == '.') | |
c4f68ce3 AM |
6519 | { |
6520 | fdh = get_fdh ((struct ppc_link_hash_entry *) h, | |
6521 | ppc_hash_table (info)); | |
6522 | if (fdh != NULL | |
6523 | && fdh->elf.root.type != bfd_link_hash_defined | |
6524 | && fdh->elf.root.type != bfd_link_hash_defweak) | |
6525 | fdh = NULL; | |
6526 | } | |
1e2f5b6e | 6527 | |
51020317 AM |
6528 | skip = (sym_sec->owner != ibfd |
6529 | || sym_sec->output_section == bfd_abs_section_ptr); | |
a4aa0fb7 AM |
6530 | if (skip) |
6531 | { | |
4025353c | 6532 | if (fdh != NULL && sym_sec->owner == ibfd) |
a4aa0fb7 AM |
6533 | { |
6534 | /* Arrange for the function descriptor sym | |
6535 | to be dropped. */ | |
d6fe2dc1 AM |
6536 | fdh->elf.root.u.def.value = 0; |
6537 | fdh->elf.root.u.def.section = sym_sec; | |
a4aa0fb7 | 6538 | } |
3f764659 | 6539 | opd_adjust[rel->r_offset / 8] = -1; |
a4aa0fb7 AM |
6540 | } |
6541 | else | |
1e2f5b6e AM |
6542 | { |
6543 | /* We'll be keeping this opd entry. */ | |
6544 | ||
4025353c | 6545 | if (fdh != NULL) |
1e2f5b6e | 6546 | { |
754021d0 AM |
6547 | /* Redefine the function descriptor symbol to |
6548 | this location in the opd section. It is | |
6549 | necessary to update the value here rather | |
6550 | than using an array of adjustments as we do | |
6551 | for local symbols, because various places | |
6552 | in the generic ELF code use the value | |
6553 | stored in u.def.value. */ | |
3f764659 | 6554 | fdh->elf.root.u.def.value = wptr - new_contents; |
754021d0 | 6555 | fdh->adjust_done = 1; |
1e2f5b6e | 6556 | } |
754021d0 AM |
6557 | |
6558 | /* Local syms are a bit tricky. We could | |
6559 | tweak them as they can be cached, but | |
6560 | we'd need to look through the local syms | |
6561 | for the function descriptor sym which we | |
6562 | don't have at the moment. So keep an | |
6563 | array of adjustments. */ | |
3f764659 JJ |
6564 | opd_adjust[rel->r_offset / 8] |
6565 | = (wptr - new_contents) - (rptr - sec->contents); | |
1e2f5b6e AM |
6566 | |
6567 | if (wptr != rptr) | |
3f764659 JJ |
6568 | memcpy (wptr, rptr, opd_ent_size); |
6569 | wptr += opd_ent_size; | |
6570 | if (add_aux_fields && opd_ent_size == 16) | |
6571 | { | |
6572 | memset (wptr, '\0', 8); | |
6573 | wptr += 8; | |
6574 | } | |
1e2f5b6e | 6575 | } |
3f764659 JJ |
6576 | rptr += opd_ent_size; |
6577 | offset += opd_ent_size; | |
1e2f5b6e AM |
6578 | } |
6579 | ||
50bc7936 AM |
6580 | if (skip) |
6581 | { | |
60124e18 AM |
6582 | if (!NO_OPD_RELOCS |
6583 | && !info->relocatable | |
18d944df AM |
6584 | && !dec_dynrel_count (rel->r_info, sec, info, |
6585 | NULL, h, sym_sec)) | |
8c1d1bb8 | 6586 | goto error_ret; |
50bc7936 AM |
6587 | } |
6588 | else | |
1e2f5b6e | 6589 | { |
50bc7936 AM |
6590 | /* We need to adjust any reloc offsets to point to the |
6591 | new opd entries. While we're at it, we may as well | |
6592 | remove redundant relocs. */ | |
3f764659 | 6593 | rel->r_offset += opd_adjust[(offset - opd_ent_size) / 8]; |
1e2f5b6e AM |
6594 | if (write_rel != rel) |
6595 | memcpy (write_rel, rel, sizeof (*rel)); | |
6596 | ++write_rel; | |
6597 | } | |
6598 | } | |
6599 | ||
3f764659 | 6600 | sec->size = wptr - new_contents; |
1e2f5b6e | 6601 | sec->reloc_count = write_rel - relstart; |
3f764659 JJ |
6602 | if (add_aux_fields) |
6603 | { | |
6604 | free (sec->contents); | |
6605 | sec->contents = new_contents; | |
6606 | } | |
6607 | ||
cdcf6e38 AM |
6608 | /* Fudge the size too, as this is used later in |
6609 | elf_bfd_final_link if we are emitting relocs. */ | |
6610 | elf_section_data (sec)->rel_hdr.sh_size | |
6611 | = sec->reloc_count * elf_section_data (sec)->rel_hdr.sh_entsize; | |
6612 | BFD_ASSERT (elf_section_data (sec)->rel_hdr2 == NULL); | |
754021d0 | 6613 | some_edited = TRUE; |
1e2f5b6e | 6614 | } |
6cdc0ccc | 6615 | else if (elf_section_data (sec)->relocs != relstart) |
1e2f5b6e | 6616 | free (relstart); |
6cdc0ccc | 6617 | |
411e1bfb AM |
6618 | if (local_syms != NULL |
6619 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
6620 | { | |
6621 | if (!info->keep_memory) | |
6622 | free (local_syms); | |
6623 | else | |
6624 | symtab_hdr->contents = (unsigned char *) local_syms; | |
6625 | } | |
6626 | } | |
6627 | ||
754021d0 AM |
6628 | if (some_edited) |
6629 | elf_link_hash_traverse (elf_hash_table (info), adjust_opd_syms, NULL); | |
6630 | ||
3f764659 JJ |
6631 | /* If we are doing a final link and the last .opd entry is just 16 byte |
6632 | long, add a 8 byte padding after it. */ | |
6633 | if (need_pad != NULL && !info->relocatable) | |
6634 | { | |
6635 | bfd_byte *p; | |
6636 | ||
6637 | if ((need_pad->flags & SEC_IN_MEMORY) == 0) | |
6638 | { | |
6639 | BFD_ASSERT (need_pad->size > 0); | |
6640 | ||
6641 | p = bfd_malloc (need_pad->size + 8); | |
6642 | if (p == NULL) | |
6643 | return FALSE; | |
699733f6 | 6644 | |
3f764659 JJ |
6645 | if (! bfd_get_section_contents (need_pad->owner, need_pad, |
6646 | p, 0, need_pad->size)) | |
6647 | return FALSE; | |
6648 | ||
6649 | need_pad->contents = p; | |
6650 | need_pad->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS); | |
6651 | } | |
6652 | else | |
6653 | { | |
6654 | p = bfd_realloc (need_pad->contents, need_pad->size + 8); | |
6655 | if (p == NULL) | |
6656 | return FALSE; | |
6657 | ||
6658 | need_pad->contents = p; | |
6659 | } | |
6660 | ||
6661 | memset (need_pad->contents + need_pad->size, 0, 8); | |
6662 | need_pad->size += 8; | |
6663 | } | |
6664 | ||
411e1bfb AM |
6665 | return TRUE; |
6666 | } | |
6667 | ||
e1918d23 | 6668 | /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */ |
411e1bfb | 6669 | |
e1918d23 | 6670 | asection * |
4ce794b7 | 6671 | ppc64_elf_tls_setup (bfd *obfd, struct bfd_link_info *info) |
411e1bfb | 6672 | { |
411e1bfb AM |
6673 | struct ppc_link_hash_table *htab; |
6674 | ||
411e1bfb | 6675 | htab = ppc_hash_table (info); |
a48ebf4d AM |
6676 | if (htab->tls_get_addr != NULL) |
6677 | { | |
8387904d | 6678 | struct ppc_link_hash_entry *h = htab->tls_get_addr; |
a48ebf4d | 6679 | |
8387904d AM |
6680 | while (h->elf.root.type == bfd_link_hash_indirect |
6681 | || h->elf.root.type == bfd_link_hash_warning) | |
6682 | h = (struct ppc_link_hash_entry *) h->elf.root.u.i.link; | |
a48ebf4d AM |
6683 | |
6684 | htab->tls_get_addr = h; | |
8387904d AM |
6685 | |
6686 | if (htab->tls_get_addr_fd == NULL | |
6687 | && h->oh != NULL | |
c4f68ce3 AM |
6688 | && h->oh->is_func_descriptor |
6689 | && (h->oh->elf.root.type == bfd_link_hash_defined | |
6690 | || h->oh->elf.root.type == bfd_link_hash_defweak)) | |
8387904d AM |
6691 | htab->tls_get_addr_fd = h->oh; |
6692 | } | |
6693 | ||
6694 | if (htab->tls_get_addr_fd != NULL) | |
6695 | { | |
6696 | struct ppc_link_hash_entry *h = htab->tls_get_addr_fd; | |
6697 | ||
6698 | while (h->elf.root.type == bfd_link_hash_indirect | |
6699 | || h->elf.root.type == bfd_link_hash_warning) | |
6700 | h = (struct ppc_link_hash_entry *) h->elf.root.u.i.link; | |
6701 | ||
6702 | htab->tls_get_addr_fd = h; | |
a48ebf4d AM |
6703 | } |
6704 | ||
e1918d23 | 6705 | return _bfd_elf_tls_setup (obfd, info); |
951fd09b | 6706 | } |
411e1bfb | 6707 | |
951fd09b AM |
6708 | /* Run through all the TLS relocs looking for optimization |
6709 | opportunities. The linker has been hacked (see ppc64elf.em) to do | |
6710 | a preliminary section layout so that we know the TLS segment | |
6711 | offsets. We can't optimize earlier because some optimizations need | |
6712 | to know the tp offset, and we need to optimize before allocating | |
6713 | dynamic relocations. */ | |
6714 | ||
6715 | bfd_boolean | |
4ce794b7 | 6716 | ppc64_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED, struct bfd_link_info *info) |
951fd09b AM |
6717 | { |
6718 | bfd *ibfd; | |
6719 | asection *sec; | |
6720 | struct ppc_link_hash_table *htab; | |
6721 | ||
1049f94e | 6722 | if (info->relocatable || info->shared) |
411e1bfb AM |
6723 | return TRUE; |
6724 | ||
951fd09b | 6725 | htab = ppc_hash_table (info); |
411e1bfb AM |
6726 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) |
6727 | { | |
6728 | Elf_Internal_Sym *locsyms = NULL; | |
30038c59 AM |
6729 | asection *toc = bfd_get_section_by_name (ibfd, ".toc"); |
6730 | unsigned char *toc_ref = NULL; | |
411e1bfb | 6731 | |
30038c59 AM |
6732 | /* Look at all the sections for this file, with TOC last. */ |
6733 | for (sec = (ibfd->sections == toc && toc && toc->next ? toc->next | |
6734 | : ibfd->sections); | |
6735 | sec != NULL; | |
6736 | sec = (sec == toc ? NULL | |
6737 | : sec->next == NULL ? toc | |
6738 | : sec->next == toc && toc->next ? toc->next | |
6739 | : sec->next)) | |
411e1bfb AM |
6740 | if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section)) |
6741 | { | |
6742 | Elf_Internal_Rela *relstart, *rel, *relend; | |
6743 | int expecting_tls_get_addr; | |
30038c59 | 6744 | long toc_ref_index = 0; |
411e1bfb AM |
6745 | |
6746 | /* Read the relocations. */ | |
4ce794b7 | 6747 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, |
45d6a902 | 6748 | info->keep_memory); |
411e1bfb AM |
6749 | if (relstart == NULL) |
6750 | return FALSE; | |
6751 | ||
6752 | expecting_tls_get_addr = 0; | |
6753 | relend = relstart + sec->reloc_count; | |
6754 | for (rel = relstart; rel < relend; rel++) | |
6755 | { | |
6756 | enum elf_ppc64_reloc_type r_type; | |
6757 | unsigned long r_symndx; | |
6758 | struct elf_link_hash_entry *h; | |
6759 | Elf_Internal_Sym *sym; | |
6760 | asection *sym_sec; | |
e7b938ca AM |
6761 | char *tls_mask; |
6762 | char tls_set, tls_clear, tls_type = 0; | |
411e1bfb | 6763 | bfd_vma value; |
951fd09b | 6764 | bfd_boolean ok_tprel, is_local; |
411e1bfb AM |
6765 | |
6766 | r_symndx = ELF64_R_SYM (rel->r_info); | |
e7b938ca | 6767 | if (!get_sym_h (&h, &sym, &sym_sec, &tls_mask, &locsyms, |
411e1bfb AM |
6768 | r_symndx, ibfd)) |
6769 | { | |
6770 | err_free_rel: | |
6771 | if (elf_section_data (sec)->relocs != relstart) | |
6772 | free (relstart); | |
30038c59 AM |
6773 | if (toc_ref != NULL) |
6774 | free (toc_ref); | |
411e1bfb AM |
6775 | if (locsyms != NULL |
6776 | && (elf_tdata (ibfd)->symtab_hdr.contents | |
6777 | != (unsigned char *) locsyms)) | |
6778 | free (locsyms); | |
6779 | return FALSE; | |
6780 | } | |
6781 | ||
6782 | if (h != NULL) | |
6783 | { | |
6784 | if (h->root.type != bfd_link_hash_defined | |
6785 | && h->root.type != bfd_link_hash_defweak) | |
6786 | continue; | |
6787 | value = h->root.u.def.value; | |
6788 | } | |
6789 | else | |
4025353c AM |
6790 | /* Symbols referenced by TLS relocs must be of type |
6791 | STT_TLS. So no need for .opd local sym adjust. */ | |
6792 | value = sym->st_value; | |
951fd09b | 6793 | |
411e1bfb | 6794 | ok_tprel = FALSE; |
951fd09b AM |
6795 | is_local = FALSE; |
6796 | if (h == NULL | |
f5385ebf | 6797 | || !h->def_dynamic) |
411e1bfb | 6798 | { |
951fd09b | 6799 | is_local = TRUE; |
411e1bfb AM |
6800 | value += sym_sec->output_offset; |
6801 | value += sym_sec->output_section->vma; | |
e1918d23 | 6802 | value -= htab->elf.tls_sec->vma; |
411e1bfb AM |
6803 | ok_tprel = (value + TP_OFFSET + ((bfd_vma) 1 << 31) |
6804 | < (bfd_vma) 1 << 32); | |
6805 | } | |
6806 | ||
4ce794b7 | 6807 | r_type = ELF64_R_TYPE (rel->r_info); |
411e1bfb AM |
6808 | switch (r_type) |
6809 | { | |
6810 | case R_PPC64_GOT_TLSLD16: | |
6811 | case R_PPC64_GOT_TLSLD16_LO: | |
6812 | case R_PPC64_GOT_TLSLD16_HI: | |
6813 | case R_PPC64_GOT_TLSLD16_HA: | |
951fd09b AM |
6814 | /* These relocs should never be against a symbol |
6815 | defined in a shared lib. Leave them alone if | |
6816 | that turns out to be the case. */ | |
e717da7e | 6817 | ppc64_tlsld_got (ibfd)->refcount -= 1; |
951fd09b AM |
6818 | if (!is_local) |
6819 | continue; | |
6820 | ||
951fd09b AM |
6821 | /* LD -> LE */ |
6822 | tls_set = 0; | |
6823 | tls_clear = TLS_LD; | |
e7b938ca | 6824 | tls_type = TLS_TLS | TLS_LD; |
411e1bfb AM |
6825 | expecting_tls_get_addr = 1; |
6826 | break; | |
6827 | ||
6828 | case R_PPC64_GOT_TLSGD16: | |
6829 | case R_PPC64_GOT_TLSGD16_LO: | |
6830 | case R_PPC64_GOT_TLSGD16_HI: | |
6831 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b | 6832 | if (ok_tprel) |
411e1bfb AM |
6833 | /* GD -> LE */ |
6834 | tls_set = 0; | |
6835 | else | |
6836 | /* GD -> IE */ | |
951fd09b AM |
6837 | tls_set = TLS_TLS | TLS_TPRELGD; |
6838 | tls_clear = TLS_GD; | |
e7b938ca | 6839 | tls_type = TLS_TLS | TLS_GD; |
411e1bfb AM |
6840 | expecting_tls_get_addr = 1; |
6841 | break; | |
6842 | ||
6843 | case R_PPC64_GOT_TPREL16_DS: | |
6844 | case R_PPC64_GOT_TPREL16_LO_DS: | |
6845 | case R_PPC64_GOT_TPREL16_HI: | |
6846 | case R_PPC64_GOT_TPREL16_HA: | |
6847 | expecting_tls_get_addr = 0; | |
6848 | if (ok_tprel) | |
6849 | { | |
6850 | /* IE -> LE */ | |
6851 | tls_set = 0; | |
6852 | tls_clear = TLS_TPREL; | |
e7b938ca | 6853 | tls_type = TLS_TLS | TLS_TPREL; |
411e1bfb AM |
6854 | break; |
6855 | } | |
6856 | else | |
6857 | continue; | |
6858 | ||
6859 | case R_PPC64_REL14: | |
6860 | case R_PPC64_REL14_BRTAKEN: | |
6861 | case R_PPC64_REL14_BRNTAKEN: | |
6862 | case R_PPC64_REL24: | |
6863 | if (h != NULL | |
8387904d AM |
6864 | && (h == &htab->tls_get_addr->elf |
6865 | || h == &htab->tls_get_addr_fd->elf)) | |
411e1bfb AM |
6866 | { |
6867 | if (!expecting_tls_get_addr | |
6868 | && rel != relstart | |
6869 | && ((ELF64_R_TYPE (rel[-1].r_info) | |
6870 | == R_PPC64_TOC16) | |
6871 | || (ELF64_R_TYPE (rel[-1].r_info) | |
6872 | == R_PPC64_TOC16_LO))) | |
6873 | { | |
6874 | /* Check for toc tls entries. */ | |
6875 | char *toc_tls; | |
951fd09b | 6876 | int retval; |
411e1bfb | 6877 | |
0d4792f7 | 6878 | retval = get_tls_mask (&toc_tls, NULL, &locsyms, |
951fd09b AM |
6879 | rel - 1, ibfd); |
6880 | if (retval == 0) | |
411e1bfb | 6881 | goto err_free_rel; |
30038c59 AM |
6882 | if (retval > 1 && toc_tls != NULL) |
6883 | { | |
6884 | expecting_tls_get_addr = 1; | |
6885 | if (toc_ref != NULL) | |
6886 | toc_ref[toc_ref_index] = 1; | |
6887 | } | |
411e1bfb AM |
6888 | } |
6889 | ||
6890 | if (expecting_tls_get_addr) | |
6891 | { | |
6892 | struct plt_entry *ent; | |
6893 | for (ent = h->plt.plist; ent; ent = ent->next) | |
6894 | if (ent->addend == 0) | |
6895 | { | |
6896 | if (ent->plt.refcount > 0) | |
6897 | ent->plt.refcount -= 1; | |
6898 | break; | |
6899 | } | |
6900 | } | |
6901 | } | |
6902 | expecting_tls_get_addr = 0; | |
6903 | continue; | |
6904 | ||
30038c59 AM |
6905 | case R_PPC64_TOC16: |
6906 | case R_PPC64_TOC16_LO: | |
6907 | case R_PPC64_TLS: | |
6908 | expecting_tls_get_addr = 0; | |
6909 | if (sym_sec == toc && toc != NULL) | |
6910 | { | |
6911 | /* Mark this toc entry as referenced by a TLS | |
6912 | code sequence. We can do that now in the | |
6913 | case of R_PPC64_TLS, and after checking for | |
6914 | tls_get_addr for the TOC16 relocs. */ | |
6915 | if (toc_ref == NULL) | |
6916 | { | |
6917 | toc_ref = bfd_zmalloc (toc->size / 8); | |
6918 | if (toc_ref == NULL) | |
6919 | goto err_free_rel; | |
6920 | } | |
6921 | if (h != NULL) | |
6922 | value = h->root.u.def.value; | |
6923 | else | |
6924 | value = sym->st_value; | |
6925 | value += rel->r_addend; | |
6926 | BFD_ASSERT (value < toc->size && value % 8 == 0); | |
6927 | toc_ref_index = value / 8; | |
6928 | if (r_type == R_PPC64_TLS) | |
6929 | toc_ref[toc_ref_index] = 1; | |
6930 | } | |
6931 | continue; | |
6932 | ||
411e1bfb AM |
6933 | case R_PPC64_TPREL64: |
6934 | expecting_tls_get_addr = 0; | |
30038c59 AM |
6935 | if (sec != toc |
6936 | || toc_ref == NULL | |
6937 | || !toc_ref[rel->r_offset / 8]) | |
6938 | continue; | |
411e1bfb AM |
6939 | if (ok_tprel) |
6940 | { | |
6941 | /* IE -> LE */ | |
6942 | tls_set = TLS_EXPLICIT; | |
6943 | tls_clear = TLS_TPREL; | |
6944 | break; | |
6945 | } | |
6946 | else | |
6947 | continue; | |
6948 | ||
6949 | case R_PPC64_DTPMOD64: | |
6950 | expecting_tls_get_addr = 0; | |
30038c59 AM |
6951 | if (sec != toc |
6952 | || toc_ref == NULL | |
6953 | || !toc_ref[rel->r_offset / 8]) | |
6954 | continue; | |
951fd09b AM |
6955 | if (rel + 1 < relend |
6956 | && (rel[1].r_info | |
6957 | == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)) | |
6958 | && rel[1].r_offset == rel->r_offset + 8) | |
411e1bfb | 6959 | { |
951fd09b | 6960 | if (ok_tprel) |
411e1bfb | 6961 | /* GD -> LE */ |
951fd09b | 6962 | tls_set = TLS_EXPLICIT | TLS_GD; |
411e1bfb AM |
6963 | else |
6964 | /* GD -> IE */ | |
951fd09b AM |
6965 | tls_set = TLS_EXPLICIT | TLS_GD | TLS_TPRELGD; |
6966 | tls_clear = TLS_GD; | |
411e1bfb AM |
6967 | } |
6968 | else | |
6969 | { | |
951fd09b AM |
6970 | if (!is_local) |
6971 | continue; | |
6972 | ||
6973 | /* LD -> LE */ | |
6974 | tls_set = TLS_EXPLICIT; | |
6975 | tls_clear = TLS_LD; | |
411e1bfb AM |
6976 | } |
6977 | break; | |
6978 | ||
6979 | default: | |
6980 | expecting_tls_get_addr = 0; | |
6981 | continue; | |
6982 | } | |
6983 | ||
6984 | if ((tls_set & TLS_EXPLICIT) == 0) | |
6985 | { | |
6986 | struct got_entry *ent; | |
6987 | ||
6988 | /* Adjust got entry for this reloc. */ | |
6989 | if (h != NULL) | |
6990 | ent = h->got.glist; | |
6991 | else | |
6992 | ent = elf_local_got_ents (ibfd)[r_symndx]; | |
6993 | ||
6994 | for (; ent != NULL; ent = ent->next) | |
6995 | if (ent->addend == rel->r_addend | |
e717da7e | 6996 | && ent->owner == ibfd |
e7b938ca | 6997 | && ent->tls_type == tls_type) |
411e1bfb AM |
6998 | break; |
6999 | if (ent == NULL) | |
7000 | abort (); | |
7001 | ||
7002 | if (tls_set == 0) | |
7003 | { | |
7004 | /* We managed to get rid of a got entry. */ | |
7005 | if (ent->got.refcount > 0) | |
7006 | ent->got.refcount -= 1; | |
7007 | } | |
411e1bfb | 7008 | } |
8c1d1bb8 | 7009 | else |
411e1bfb | 7010 | { |
8c1d1bb8 AM |
7011 | /* If we got rid of a DTPMOD/DTPREL reloc pair then |
7012 | we'll lose one or two dyn relocs. */ | |
7013 | if (!dec_dynrel_count (rel->r_info, sec, info, | |
7014 | NULL, h, sym_sec)) | |
7015 | return FALSE; | |
7016 | ||
7017 | if (tls_set == (TLS_EXPLICIT | TLS_GD)) | |
7018 | { | |
7019 | if (!dec_dynrel_count ((rel + 1)->r_info, sec, info, | |
7020 | NULL, h, sym_sec)) | |
7021 | return FALSE; | |
7022 | } | |
411e1bfb AM |
7023 | } |
7024 | ||
e7b938ca AM |
7025 | *tls_mask |= tls_set; |
7026 | *tls_mask &= ~tls_clear; | |
411e1bfb AM |
7027 | } |
7028 | ||
7029 | if (elf_section_data (sec)->relocs != relstart) | |
7030 | free (relstart); | |
7031 | } | |
7032 | ||
30038c59 AM |
7033 | if (toc_ref != NULL) |
7034 | free (toc_ref); | |
7035 | ||
411e1bfb AM |
7036 | if (locsyms != NULL |
7037 | && (elf_tdata (ibfd)->symtab_hdr.contents | |
7038 | != (unsigned char *) locsyms)) | |
6cdc0ccc AM |
7039 | { |
7040 | if (!info->keep_memory) | |
411e1bfb | 7041 | free (locsyms); |
6cdc0ccc | 7042 | else |
411e1bfb | 7043 | elf_tdata (ibfd)->symtab_hdr.contents = (unsigned char *) locsyms; |
6cdc0ccc | 7044 | } |
1e2f5b6e | 7045 | } |
b34976b6 | 7046 | return TRUE; |
1e2f5b6e | 7047 | } |
b34976b6 | 7048 | |
c5614fa4 AM |
7049 | /* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust |
7050 | the values of any global symbols in a toc section that has been | |
7051 | edited. Globals in toc sections should be a rarity, so this function | |
7052 | sets a flag if any are found in toc sections other than the one just | |
7053 | edited, so that futher hash table traversals can be avoided. */ | |
7054 | ||
7055 | struct adjust_toc_info | |
7056 | { | |
7057 | asection *toc; | |
7058 | unsigned long *skip; | |
7059 | bfd_boolean global_toc_syms; | |
7060 | }; | |
7061 | ||
7062 | static bfd_boolean | |
7063 | adjust_toc_syms (struct elf_link_hash_entry *h, void *inf) | |
7064 | { | |
7065 | struct ppc_link_hash_entry *eh; | |
7066 | struct adjust_toc_info *toc_inf = (struct adjust_toc_info *) inf; | |
7067 | ||
7068 | if (h->root.type == bfd_link_hash_indirect) | |
7069 | return TRUE; | |
7070 | ||
7071 | if (h->root.type == bfd_link_hash_warning) | |
7072 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
7073 | ||
7074 | if (h->root.type != bfd_link_hash_defined | |
7075 | && h->root.type != bfd_link_hash_defweak) | |
7076 | return TRUE; | |
7077 | ||
7078 | eh = (struct ppc_link_hash_entry *) h; | |
7079 | if (eh->adjust_done) | |
7080 | return TRUE; | |
7081 | ||
7082 | if (eh->elf.root.u.def.section == toc_inf->toc) | |
7083 | { | |
7084 | unsigned long skip = toc_inf->skip[eh->elf.root.u.def.value >> 3]; | |
7085 | if (skip != (unsigned long) -1) | |
7086 | eh->elf.root.u.def.value -= skip; | |
7087 | else | |
7088 | { | |
7089 | (*_bfd_error_handler) | |
7090 | (_("%s defined in removed toc entry"), eh->elf.root.root.string); | |
7091 | eh->elf.root.u.def.section = &bfd_abs_section; | |
7092 | eh->elf.root.u.def.value = 0; | |
7093 | } | |
7094 | eh->adjust_done = 1; | |
7095 | } | |
7096 | else if (strcmp (eh->elf.root.u.def.section->name, ".toc") == 0) | |
7097 | toc_inf->global_toc_syms = TRUE; | |
7098 | ||
7099 | return TRUE; | |
7100 | } | |
7101 | ||
7102 | /* Examine all relocs referencing .toc sections in order to remove | |
7103 | unused .toc entries. */ | |
7104 | ||
7105 | bfd_boolean | |
7106 | ppc64_elf_edit_toc (bfd *obfd ATTRIBUTE_UNUSED, struct bfd_link_info *info) | |
7107 | { | |
7108 | bfd *ibfd; | |
7109 | struct adjust_toc_info toc_inf; | |
7110 | ||
7111 | toc_inf.global_toc_syms = TRUE; | |
7112 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
7113 | { | |
7114 | asection *toc, *sec; | |
7115 | Elf_Internal_Shdr *symtab_hdr; | |
7116 | Elf_Internal_Sym *local_syms; | |
7117 | struct elf_link_hash_entry **sym_hashes; | |
92b7a70f | 7118 | Elf_Internal_Rela *relstart, *rel; |
c5614fa4 AM |
7119 | unsigned long *skip, *drop; |
7120 | unsigned char *used; | |
7121 | unsigned char *keep, last, some_unused; | |
7122 | ||
7123 | toc = bfd_get_section_by_name (ibfd, ".toc"); | |
7124 | if (toc == NULL | |
92b7a70f | 7125 | || toc->size == 0 |
c5614fa4 AM |
7126 | || toc->sec_info_type == ELF_INFO_TYPE_JUST_SYMS |
7127 | || elf_discarded_section (toc)) | |
7128 | continue; | |
7129 | ||
7130 | local_syms = NULL; | |
7131 | symtab_hdr = &elf_tdata (ibfd)->symtab_hdr; | |
7132 | sym_hashes = elf_sym_hashes (ibfd); | |
7133 | ||
7134 | /* Look at sections dropped from the final link. */ | |
7135 | skip = NULL; | |
7136 | relstart = NULL; | |
7137 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
7138 | { | |
7139 | if (sec->reloc_count == 0 | |
7140 | || !elf_discarded_section (sec) | |
7141 | || get_opd_info (sec) | |
7142 | || (sec->flags & SEC_ALLOC) == 0 | |
7143 | || (sec->flags & SEC_DEBUGGING) != 0) | |
7144 | continue; | |
7145 | ||
7146 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, FALSE); | |
7147 | if (relstart == NULL) | |
7148 | goto error_ret; | |
7149 | ||
7150 | /* Run through the relocs to see which toc entries might be | |
7151 | unused. */ | |
7152 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
7153 | { | |
7154 | enum elf_ppc64_reloc_type r_type; | |
7155 | unsigned long r_symndx; | |
7156 | asection *sym_sec; | |
7157 | struct elf_link_hash_entry *h; | |
7158 | Elf_Internal_Sym *sym; | |
7159 | bfd_vma val; | |
7160 | ||
7161 | r_type = ELF64_R_TYPE (rel->r_info); | |
7162 | switch (r_type) | |
7163 | { | |
7164 | default: | |
7165 | continue; | |
7166 | ||
7167 | case R_PPC64_TOC16: | |
7168 | case R_PPC64_TOC16_LO: | |
7169 | case R_PPC64_TOC16_HI: | |
7170 | case R_PPC64_TOC16_HA: | |
7171 | case R_PPC64_TOC16_DS: | |
7172 | case R_PPC64_TOC16_LO_DS: | |
7173 | break; | |
7174 | } | |
7175 | ||
7176 | r_symndx = ELF64_R_SYM (rel->r_info); | |
7177 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
7178 | r_symndx, ibfd)) | |
7179 | goto error_ret; | |
7180 | ||
7181 | if (sym_sec != toc) | |
7182 | continue; | |
7183 | ||
7184 | if (h != NULL) | |
7185 | val = h->root.u.def.value; | |
7186 | else | |
7187 | val = sym->st_value; | |
7188 | val += rel->r_addend; | |
7189 | ||
7190 | if (val >= toc->size) | |
7191 | continue; | |
7192 | ||
7193 | /* Anything in the toc ought to be aligned to 8 bytes. | |
7194 | If not, don't mark as unused. */ | |
7195 | if (val & 7) | |
7196 | continue; | |
7197 | ||
7198 | if (skip == NULL) | |
7199 | { | |
7200 | skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 7) / 8); | |
7201 | if (skip == NULL) | |
7202 | goto error_ret; | |
7203 | } | |
7204 | ||
7205 | skip[val >> 3] = 1; | |
7206 | } | |
7207 | ||
7208 | if (elf_section_data (sec)->relocs != relstart) | |
7209 | free (relstart); | |
7210 | } | |
7211 | ||
7212 | if (skip == NULL) | |
7213 | continue; | |
7214 | ||
7215 | used = bfd_zmalloc (sizeof (*used) * (toc->size + 7) / 8); | |
7216 | if (used == NULL) | |
7217 | { | |
7218 | error_ret: | |
7219 | if (local_syms != NULL | |
7220 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
7221 | free (local_syms); | |
7222 | if (sec != NULL | |
7223 | && relstart != NULL | |
7224 | && elf_section_data (sec)->relocs != relstart) | |
7225 | free (relstart); | |
7226 | if (skip != NULL) | |
7227 | free (skip); | |
7228 | return FALSE; | |
7229 | } | |
7230 | ||
30038c59 AM |
7231 | /* Now check all kept sections that might reference the toc. |
7232 | Check the toc itself last. */ | |
7233 | for (sec = (ibfd->sections == toc && toc->next ? toc->next | |
7234 | : ibfd->sections); | |
c5614fa4 | 7235 | sec != NULL; |
c5614fa4 | 7236 | sec = (sec == toc ? NULL |
c5614fa4 | 7237 | : sec->next == NULL ? toc |
30038c59 | 7238 | : sec->next == toc && toc->next ? toc->next |
c5614fa4 AM |
7239 | : sec->next)) |
7240 | { | |
7241 | int repeat; | |
7242 | ||
7243 | if (sec->reloc_count == 0 | |
7244 | || elf_discarded_section (sec) | |
7245 | || get_opd_info (sec) | |
7246 | || (sec->flags & SEC_ALLOC) == 0 | |
7247 | || (sec->flags & SEC_DEBUGGING) != 0) | |
7248 | continue; | |
7249 | ||
7250 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, TRUE); | |
7251 | if (relstart == NULL) | |
7252 | goto error_ret; | |
7253 | ||
7254 | /* Mark toc entries referenced as used. */ | |
7255 | repeat = 0; | |
7256 | do | |
7257 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
7258 | { | |
7259 | enum elf_ppc64_reloc_type r_type; | |
7260 | unsigned long r_symndx; | |
7261 | asection *sym_sec; | |
7262 | struct elf_link_hash_entry *h; | |
7263 | Elf_Internal_Sym *sym; | |
7264 | bfd_vma val; | |
7265 | ||
7266 | r_type = ELF64_R_TYPE (rel->r_info); | |
7267 | switch (r_type) | |
7268 | { | |
7269 | case R_PPC64_TOC16: | |
7270 | case R_PPC64_TOC16_LO: | |
7271 | case R_PPC64_TOC16_HI: | |
7272 | case R_PPC64_TOC16_HA: | |
7273 | case R_PPC64_TOC16_DS: | |
7274 | case R_PPC64_TOC16_LO_DS: | |
7275 | /* In case we're taking addresses of toc entries. */ | |
7276 | case R_PPC64_ADDR64: | |
7277 | break; | |
7278 | ||
7279 | default: | |
7280 | continue; | |
7281 | } | |
7282 | ||
7283 | r_symndx = ELF64_R_SYM (rel->r_info); | |
7284 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
7285 | r_symndx, ibfd)) | |
7286 | { | |
7287 | free (used); | |
7288 | goto error_ret; | |
7289 | } | |
7290 | ||
7291 | if (sym_sec != toc) | |
7292 | continue; | |
7293 | ||
7294 | if (h != NULL) | |
7295 | val = h->root.u.def.value; | |
7296 | else | |
7297 | val = sym->st_value; | |
7298 | val += rel->r_addend; | |
7299 | ||
7300 | if (val >= toc->size) | |
7301 | continue; | |
7302 | ||
7303 | /* For the toc section, we only mark as used if | |
7304 | this entry itself isn't unused. */ | |
7305 | if (sec == toc | |
7306 | && !used[val >> 3] | |
7307 | && (used[rel->r_offset >> 3] | |
7308 | || !skip[rel->r_offset >> 3])) | |
7309 | /* Do all the relocs again, to catch reference | |
7310 | chains. */ | |
7311 | repeat = 1; | |
7312 | ||
7313 | used[val >> 3] = 1; | |
7314 | } | |
7315 | while (repeat); | |
7316 | } | |
7317 | ||
7318 | /* Merge the used and skip arrays. Assume that TOC | |
7319 | doublewords not appearing as either used or unused belong | |
7320 | to to an entry more than one doubleword in size. */ | |
7321 | for (drop = skip, keep = used, last = 0, some_unused = 0; | |
7322 | drop < skip + (toc->size + 7) / 8; | |
7323 | ++drop, ++keep) | |
7324 | { | |
7325 | if (*keep) | |
7326 | { | |
7327 | *drop = 0; | |
7328 | last = 0; | |
7329 | } | |
7330 | else if (*drop) | |
7331 | { | |
7332 | some_unused = 1; | |
7333 | last = 1; | |
7334 | } | |
7335 | else | |
7336 | *drop = last; | |
7337 | } | |
7338 | ||
7339 | free (used); | |
7340 | ||
7341 | if (some_unused) | |
7342 | { | |
7343 | bfd_byte *contents, *src; | |
7344 | unsigned long off; | |
7345 | ||
7346 | /* Shuffle the toc contents, and at the same time convert the | |
7347 | skip array from booleans into offsets. */ | |
7348 | if (!bfd_malloc_and_get_section (ibfd, toc, &contents)) | |
7349 | goto error_ret; | |
7350 | ||
7351 | elf_section_data (toc)->this_hdr.contents = contents; | |
7352 | ||
7353 | for (src = contents, off = 0, drop = skip; | |
7354 | src < contents + toc->size; | |
7355 | src += 8, ++drop) | |
7356 | { | |
7357 | if (*drop) | |
7358 | { | |
7359 | *drop = (unsigned long) -1; | |
7360 | off += 8; | |
7361 | } | |
7362 | else if (off != 0) | |
7363 | { | |
7364 | *drop = off; | |
7365 | memcpy (src - off, src, 8); | |
7366 | } | |
7367 | } | |
7368 | toc->rawsize = toc->size; | |
7369 | toc->size = src - contents - off; | |
7370 | ||
92b7a70f AM |
7371 | if (toc->reloc_count != 0) |
7372 | { | |
7373 | Elf_Internal_Rela *wrel; | |
7374 | bfd_size_type sz; | |
c5614fa4 | 7375 | |
92b7a70f AM |
7376 | /* Read toc relocs. */ |
7377 | relstart = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL, | |
7378 | TRUE); | |
7379 | if (relstart == NULL) | |
7380 | goto error_ret; | |
7381 | ||
7382 | /* Remove unused toc relocs, and adjust those we keep. */ | |
7383 | wrel = relstart; | |
7384 | for (rel = relstart; rel < relstart + toc->reloc_count; ++rel) | |
7385 | if (skip[rel->r_offset >> 3] != (unsigned long) -1) | |
7386 | { | |
7387 | wrel->r_offset = rel->r_offset - skip[rel->r_offset >> 3]; | |
7388 | wrel->r_info = rel->r_info; | |
7389 | wrel->r_addend = rel->r_addend; | |
7390 | ++wrel; | |
7391 | } | |
8c1d1bb8 AM |
7392 | else if (!dec_dynrel_count (rel->r_info, toc, info, |
7393 | &local_syms, NULL, NULL)) | |
7394 | goto error_ret; | |
35090471 | 7395 | |
92b7a70f AM |
7396 | toc->reloc_count = wrel - relstart; |
7397 | sz = elf_section_data (toc)->rel_hdr.sh_entsize; | |
7398 | elf_section_data (toc)->rel_hdr.sh_size = toc->reloc_count * sz; | |
7399 | BFD_ASSERT (elf_section_data (toc)->rel_hdr2 == NULL); | |
7400 | } | |
c5614fa4 AM |
7401 | |
7402 | /* Adjust addends for relocs against the toc section sym. */ | |
7403 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
7404 | { | |
7405 | if (sec->reloc_count == 0 | |
7406 | || elf_discarded_section (sec)) | |
7407 | continue; | |
7408 | ||
7409 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, | |
7410 | TRUE); | |
7411 | if (relstart == NULL) | |
7412 | goto error_ret; | |
7413 | ||
7414 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
7415 | { | |
7416 | enum elf_ppc64_reloc_type r_type; | |
7417 | unsigned long r_symndx; | |
7418 | asection *sym_sec; | |
7419 | struct elf_link_hash_entry *h; | |
7420 | Elf_Internal_Sym *sym; | |
7421 | ||
7422 | r_type = ELF64_R_TYPE (rel->r_info); | |
7423 | switch (r_type) | |
7424 | { | |
7425 | default: | |
7426 | continue; | |
7427 | ||
7428 | case R_PPC64_TOC16: | |
7429 | case R_PPC64_TOC16_LO: | |
7430 | case R_PPC64_TOC16_HI: | |
7431 | case R_PPC64_TOC16_HA: | |
7432 | case R_PPC64_TOC16_DS: | |
7433 | case R_PPC64_TOC16_LO_DS: | |
7434 | case R_PPC64_ADDR64: | |
7435 | break; | |
7436 | } | |
7437 | ||
7438 | r_symndx = ELF64_R_SYM (rel->r_info); | |
7439 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
7440 | r_symndx, ibfd)) | |
7441 | goto error_ret; | |
7442 | ||
7443 | if (sym_sec != toc || h != NULL || sym->st_value != 0) | |
7444 | continue; | |
7445 | ||
7446 | rel->r_addend -= skip[rel->r_addend >> 3]; | |
7447 | } | |
7448 | } | |
7449 | ||
7450 | /* We shouldn't have local or global symbols defined in the TOC, | |
7451 | but handle them anyway. */ | |
7452 | if (local_syms != NULL) | |
7453 | { | |
7454 | Elf_Internal_Sym *sym; | |
7455 | ||
7456 | for (sym = local_syms; | |
7457 | sym < local_syms + symtab_hdr->sh_info; | |
7458 | ++sym) | |
7459 | if (sym->st_shndx != SHN_UNDEF | |
7460 | && (sym->st_shndx < SHN_LORESERVE | |
7461 | || sym->st_shndx > SHN_HIRESERVE) | |
7462 | && sym->st_value != 0 | |
7463 | && bfd_section_from_elf_index (ibfd, sym->st_shndx) == toc) | |
7464 | { | |
7465 | if (skip[sym->st_value >> 3] != (unsigned long) -1) | |
7466 | sym->st_value -= skip[sym->st_value >> 3]; | |
7467 | else | |
7468 | { | |
7469 | (*_bfd_error_handler) | |
7470 | (_("%s defined in removed toc entry"), | |
26c61ae5 L |
7471 | bfd_elf_sym_name (ibfd, symtab_hdr, sym, |
7472 | NULL)); | |
c5614fa4 AM |
7473 | sym->st_value = 0; |
7474 | sym->st_shndx = SHN_ABS; | |
7475 | } | |
7476 | symtab_hdr->contents = (unsigned char *) local_syms; | |
7477 | } | |
7478 | } | |
7479 | ||
7480 | /* Finally, adjust any global syms defined in the toc. */ | |
7481 | if (toc_inf.global_toc_syms) | |
7482 | { | |
7483 | toc_inf.toc = toc; | |
7484 | toc_inf.skip = skip; | |
7485 | toc_inf.global_toc_syms = FALSE; | |
7486 | elf_link_hash_traverse (elf_hash_table (info), adjust_toc_syms, | |
7487 | &toc_inf); | |
7488 | } | |
7489 | } | |
7490 | ||
7491 | if (local_syms != NULL | |
7492 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
7493 | { | |
7494 | if (!info->keep_memory) | |
7495 | free (local_syms); | |
7496 | else | |
7497 | symtab_hdr->contents = (unsigned char *) local_syms; | |
7498 | } | |
7499 | free (skip); | |
7500 | } | |
7501 | ||
7502 | return TRUE; | |
7503 | } | |
7504 | ||
65f38f15 AM |
7505 | /* Allocate space in .plt, .got and associated reloc sections for |
7506 | dynamic relocs. */ | |
5bd4f169 | 7507 | |
b34976b6 | 7508 | static bfd_boolean |
4ce794b7 | 7509 | allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf) |
5bd4f169 | 7510 | { |
65f38f15 AM |
7511 | struct bfd_link_info *info; |
7512 | struct ppc_link_hash_table *htab; | |
5bd4f169 | 7513 | asection *s; |
65f38f15 AM |
7514 | struct ppc_link_hash_entry *eh; |
7515 | struct ppc_dyn_relocs *p; | |
411e1bfb | 7516 | struct got_entry *gent; |
5bd4f169 | 7517 | |
e92d460e | 7518 | if (h->root.type == bfd_link_hash_indirect) |
b34976b6 | 7519 | return TRUE; |
5bd4f169 | 7520 | |
e92d460e AM |
7521 | if (h->root.type == bfd_link_hash_warning) |
7522 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
7523 | ||
65f38f15 AM |
7524 | info = (struct bfd_link_info *) inf; |
7525 | htab = ppc_hash_table (info); | |
5bd4f169 | 7526 | |
65f38f15 | 7527 | if (htab->elf.dynamic_sections_created |
411e1bfb | 7528 | && h->dynindx != -1 |
9c7a29a3 | 7529 | && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h)) |
5bd4f169 | 7530 | { |
411e1bfb AM |
7531 | struct plt_entry *pent; |
7532 | bfd_boolean doneone = FALSE; | |
7533 | for (pent = h->plt.plist; pent != NULL; pent = pent->next) | |
7534 | if (pent->plt.refcount > 0) | |
7535 | { | |
411e1bfb AM |
7536 | /* If this is the first .plt entry, make room for the special |
7537 | first entry. */ | |
4ce794b7 | 7538 | s = htab->plt; |
eea6121a AM |
7539 | if (s->size == 0) |
7540 | s->size += PLT_INITIAL_ENTRY_SIZE; | |
411e1bfb | 7541 | |
eea6121a | 7542 | pent->plt.offset = s->size; |
411e1bfb AM |
7543 | |
7544 | /* Make room for this entry. */ | |
eea6121a | 7545 | s->size += PLT_ENTRY_SIZE; |
411e1bfb AM |
7546 | |
7547 | /* Make room for the .glink code. */ | |
4ce794b7 | 7548 | s = htab->glink; |
eea6121a AM |
7549 | if (s->size == 0) |
7550 | s->size += GLINK_CALL_STUB_SIZE; | |
411e1bfb | 7551 | /* We need bigger stubs past index 32767. */ |
eea6121a AM |
7552 | if (s->size >= GLINK_CALL_STUB_SIZE + 32768*2*4) |
7553 | s->size += 4; | |
7554 | s->size += 2*4; | |
411e1bfb AM |
7555 | |
7556 | /* We also need to make an entry in the .rela.plt section. */ | |
4ce794b7 | 7557 | s = htab->relplt; |
eea6121a | 7558 | s->size += sizeof (Elf64_External_Rela); |
411e1bfb AM |
7559 | doneone = TRUE; |
7560 | } | |
7561 | else | |
7562 | pent->plt.offset = (bfd_vma) -1; | |
7563 | if (!doneone) | |
65f38f15 | 7564 | { |
411e1bfb | 7565 | h->plt.plist = NULL; |
f5385ebf | 7566 | h->needs_plt = 0; |
65f38f15 AM |
7567 | } |
7568 | } | |
7569 | else | |
7570 | { | |
411e1bfb | 7571 | h->plt.plist = NULL; |
f5385ebf | 7572 | h->needs_plt = 0; |
65f38f15 AM |
7573 | } |
7574 | ||
951fd09b AM |
7575 | eh = (struct ppc_link_hash_entry *) h; |
7576 | /* Run through the TLS GD got entries first if we're changing them | |
7577 | to TPREL. */ | |
e7b938ca | 7578 | if ((eh->tls_mask & TLS_TPRELGD) != 0) |
951fd09b AM |
7579 | for (gent = h->got.glist; gent != NULL; gent = gent->next) |
7580 | if (gent->got.refcount > 0 | |
7581 | && (gent->tls_type & TLS_GD) != 0) | |
7582 | { | |
7583 | /* This was a GD entry that has been converted to TPREL. If | |
7584 | there happens to be a TPREL entry we can use that one. */ | |
7585 | struct got_entry *ent; | |
7586 | for (ent = h->got.glist; ent != NULL; ent = ent->next) | |
7587 | if (ent->got.refcount > 0 | |
7588 | && (ent->tls_type & TLS_TPREL) != 0 | |
e717da7e AM |
7589 | && ent->addend == gent->addend |
7590 | && ent->owner == gent->owner) | |
951fd09b AM |
7591 | { |
7592 | gent->got.refcount = 0; | |
7593 | break; | |
7594 | } | |
7595 | ||
7596 | /* If not, then we'll be using our own TPREL entry. */ | |
7597 | if (gent->got.refcount != 0) | |
7598 | gent->tls_type = TLS_TLS | TLS_TPREL; | |
7599 | } | |
7600 | ||
411e1bfb AM |
7601 | for (gent = h->got.glist; gent != NULL; gent = gent->next) |
7602 | if (gent->got.refcount > 0) | |
7603 | { | |
951fd09b AM |
7604 | bfd_boolean dyn; |
7605 | ||
411e1bfb | 7606 | /* Make sure this symbol is output as a dynamic symbol. |
951fd09b AM |
7607 | Undefined weak syms won't yet be marked as dynamic, |
7608 | nor will all TLS symbols. */ | |
411e1bfb | 7609 | if (h->dynindx == -1 |
f5385ebf | 7610 | && !h->forced_local) |
411e1bfb | 7611 | { |
c152c796 | 7612 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
411e1bfb AM |
7613 | return FALSE; |
7614 | } | |
65f38f15 | 7615 | |
d881513a | 7616 | if ((gent->tls_type & TLS_LD) != 0 |
f5385ebf | 7617 | && !h->def_dynamic) |
411e1bfb | 7618 | { |
e717da7e | 7619 | gent->got.offset = ppc64_tlsld_got (gent->owner)->offset; |
951fd09b | 7620 | continue; |
411e1bfb | 7621 | } |
951fd09b | 7622 | |
e717da7e | 7623 | s = ppc64_elf_tdata (gent->owner)->got; |
eea6121a AM |
7624 | gent->got.offset = s->size; |
7625 | s->size | |
d881513a | 7626 | += (gent->tls_type & eh->tls_mask & (TLS_GD | TLS_LD)) ? 16 : 8; |
951fd09b | 7627 | dyn = htab->elf.dynamic_sections_created; |
4e795f50 AM |
7628 | if ((info->shared |
7629 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)) | |
7630 | && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
7631 | || h->root.type != bfd_link_hash_undefweak)) | |
eea6121a | 7632 | ppc64_elf_tdata (gent->owner)->relgot->size |
e7b938ca | 7633 | += (gent->tls_type & eh->tls_mask & TLS_GD |
951fd09b AM |
7634 | ? 2 * sizeof (Elf64_External_Rela) |
7635 | : sizeof (Elf64_External_Rela)); | |
411e1bfb AM |
7636 | } |
7637 | else | |
7638 | gent->got.offset = (bfd_vma) -1; | |
65f38f15 | 7639 | |
65f38f15 | 7640 | if (eh->dyn_relocs == NULL) |
b34976b6 | 7641 | return TRUE; |
65f38f15 AM |
7642 | |
7643 | /* In the shared -Bsymbolic case, discard space allocated for | |
7644 | dynamic pc-relative relocs against symbols which turn out to be | |
7645 | defined in regular objects. For the normal shared case, discard | |
7646 | space for relocs that have become local due to symbol visibility | |
7647 | changes. */ | |
7648 | ||
7649 | if (info->shared) | |
7650 | { | |
9c7a29a3 AM |
7651 | /* Relocs that use pc_count are those that appear on a call insn, |
7652 | or certain REL relocs (see MUST_BE_DYN_RELOC) that can be | |
7653 | generated via assembly. We want calls to protected symbols to | |
7654 | resolve directly to the function rather than going via the plt. | |
7655 | If people want function pointer comparisons to work as expected | |
7656 | then they should avoid writing weird assembly. */ | |
09695f56 | 7657 | if (SYMBOL_CALLS_LOCAL (info, h)) |
65f38f15 AM |
7658 | { |
7659 | struct ppc_dyn_relocs **pp; | |
7660 | ||
7661 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) | |
5bd4f169 | 7662 | { |
65f38f15 AM |
7663 | p->count -= p->pc_count; |
7664 | p->pc_count = 0; | |
7665 | if (p->count == 0) | |
7666 | *pp = p->next; | |
7667 | else | |
7668 | pp = &p->next; | |
5bd4f169 | 7669 | } |
65f38f15 | 7670 | } |
4e795f50 AM |
7671 | |
7672 | /* Also discard relocs on undefined weak syms with non-default | |
7673 | visibility. */ | |
cab87ef9 AM |
7674 | if (eh->dyn_relocs != NULL |
7675 | && h->root.type == bfd_link_hash_undefweak) | |
dfbb6ac9 AM |
7676 | { |
7677 | if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) | |
7678 | eh->dyn_relocs = NULL; | |
7679 | ||
7680 | /* Make sure this symbol is output as a dynamic symbol. | |
7681 | Undefined weak syms won't yet be marked as dynamic. */ | |
7682 | else if (h->dynindx == -1 | |
7683 | && !h->forced_local) | |
7684 | { | |
7685 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) | |
7686 | return FALSE; | |
7687 | } | |
7688 | } | |
65f38f15 | 7689 | } |
f4656909 | 7690 | else if (ELIMINATE_COPY_RELOCS) |
65f38f15 AM |
7691 | { |
7692 | /* For the non-shared case, discard space for relocs against | |
7693 | symbols which turn out to need copy relocs or are not | |
7694 | dynamic. */ | |
7695 | ||
f5385ebf AM |
7696 | if (!h->non_got_ref |
7697 | && h->def_dynamic | |
7698 | && !h->def_regular) | |
65f38f15 AM |
7699 | { |
7700 | /* Make sure this symbol is output as a dynamic symbol. | |
7701 | Undefined weak syms won't yet be marked as dynamic. */ | |
7702 | if (h->dynindx == -1 | |
f5385ebf | 7703 | && !h->forced_local) |
65f38f15 | 7704 | { |
c152c796 | 7705 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 7706 | return FALSE; |
65f38f15 AM |
7707 | } |
7708 | ||
7709 | /* If that succeeded, we know we'll be keeping all the | |
7710 | relocs. */ | |
7711 | if (h->dynindx != -1) | |
7712 | goto keep; | |
7713 | } | |
7714 | ||
7715 | eh->dyn_relocs = NULL; | |
7716 | ||
ec338859 | 7717 | keep: ; |
65f38f15 AM |
7718 | } |
7719 | ||
7720 | /* Finally, allocate space. */ | |
7721 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
7722 | { | |
7723 | asection *sreloc = elf_section_data (p->sec)->sreloc; | |
eea6121a | 7724 | sreloc->size += p->count * sizeof (Elf64_External_Rela); |
65f38f15 AM |
7725 | } |
7726 | ||
b34976b6 | 7727 | return TRUE; |
65f38f15 AM |
7728 | } |
7729 | ||
7730 | /* Find any dynamic relocs that apply to read-only sections. */ | |
7731 | ||
b34976b6 | 7732 | static bfd_boolean |
4ce794b7 | 7733 | readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf) |
65f38f15 AM |
7734 | { |
7735 | struct ppc_link_hash_entry *eh; | |
7736 | struct ppc_dyn_relocs *p; | |
7737 | ||
e92d460e AM |
7738 | if (h->root.type == bfd_link_hash_warning) |
7739 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
7740 | ||
65f38f15 AM |
7741 | eh = (struct ppc_link_hash_entry *) h; |
7742 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
7743 | { | |
7744 | asection *s = p->sec->output_section; | |
7745 | ||
7746 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
7747 | { | |
4ce794b7 | 7748 | struct bfd_link_info *info = inf; |
65f38f15 AM |
7749 | |
7750 | info->flags |= DF_TEXTREL; | |
7751 | ||
7752 | /* Not an error, just cut short the traversal. */ | |
b34976b6 | 7753 | return FALSE; |
65f38f15 AM |
7754 | } |
7755 | } | |
b34976b6 | 7756 | return TRUE; |
65f38f15 AM |
7757 | } |
7758 | ||
7759 | /* Set the sizes of the dynamic sections. */ | |
7760 | ||
b34976b6 | 7761 | static bfd_boolean |
4ce794b7 AM |
7762 | ppc64_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED, |
7763 | struct bfd_link_info *info) | |
65f38f15 AM |
7764 | { |
7765 | struct ppc_link_hash_table *htab; | |
7766 | bfd *dynobj; | |
7767 | asection *s; | |
b34976b6 | 7768 | bfd_boolean relocs; |
65f38f15 AM |
7769 | bfd *ibfd; |
7770 | ||
7771 | htab = ppc_hash_table (info); | |
7772 | dynobj = htab->elf.dynobj; | |
7773 | if (dynobj == NULL) | |
7774 | abort (); | |
7775 | ||
7776 | if (htab->elf.dynamic_sections_created) | |
7777 | { | |
7778 | /* Set the contents of the .interp section to the interpreter. */ | |
36af4a4e | 7779 | if (info->executable) |
65f38f15 AM |
7780 | { |
7781 | s = bfd_get_section_by_name (dynobj, ".interp"); | |
7782 | if (s == NULL) | |
7783 | abort (); | |
eea6121a | 7784 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; |
65f38f15 AM |
7785 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; |
7786 | } | |
7787 | } | |
7788 | ||
7789 | /* Set up .got offsets for local syms, and space for local dynamic | |
7790 | relocs. */ | |
7791 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
7792 | { | |
411e1bfb AM |
7793 | struct got_entry **lgot_ents; |
7794 | struct got_entry **end_lgot_ents; | |
e7b938ca | 7795 | char *lgot_masks; |
65f38f15 AM |
7796 | bfd_size_type locsymcount; |
7797 | Elf_Internal_Shdr *symtab_hdr; | |
7798 | asection *srel; | |
7799 | ||
ee75fd95 | 7800 | if (!is_ppc64_elf_target (ibfd->xvec)) |
65f38f15 AM |
7801 | continue; |
7802 | ||
e717da7e AM |
7803 | if (ppc64_tlsld_got (ibfd)->refcount > 0) |
7804 | { | |
7805 | s = ppc64_elf_tdata (ibfd)->got; | |
eea6121a AM |
7806 | ppc64_tlsld_got (ibfd)->offset = s->size; |
7807 | s->size += 16; | |
e717da7e AM |
7808 | if (info->shared) |
7809 | { | |
7810 | srel = ppc64_elf_tdata (ibfd)->relgot; | |
eea6121a | 7811 | srel->size += sizeof (Elf64_External_Rela); |
e717da7e AM |
7812 | } |
7813 | } | |
7814 | else | |
7815 | ppc64_tlsld_got (ibfd)->offset = (bfd_vma) -1; | |
7816 | ||
65f38f15 AM |
7817 | for (s = ibfd->sections; s != NULL; s = s->next) |
7818 | { | |
ec338859 | 7819 | struct ppc_dyn_relocs *p; |
65f38f15 | 7820 | |
6edfbbad | 7821 | for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next) |
65f38f15 | 7822 | { |
ec338859 AM |
7823 | if (!bfd_is_abs_section (p->sec) |
7824 | && bfd_is_abs_section (p->sec->output_section)) | |
7825 | { | |
7826 | /* Input section has been discarded, either because | |
7827 | it is a copy of a linkonce section or due to | |
7828 | linker script /DISCARD/, so we'll be discarding | |
7829 | the relocs too. */ | |
7830 | } | |
248866a8 | 7831 | else if (p->count != 0) |
ec338859 AM |
7832 | { |
7833 | srel = elf_section_data (p->sec)->sreloc; | |
eea6121a | 7834 | srel->size += p->count * sizeof (Elf64_External_Rela); |
248866a8 AM |
7835 | if ((p->sec->output_section->flags & SEC_READONLY) != 0) |
7836 | info->flags |= DF_TEXTREL; | |
ec338859 | 7837 | } |
65f38f15 AM |
7838 | } |
7839 | } | |
7840 | ||
411e1bfb AM |
7841 | lgot_ents = elf_local_got_ents (ibfd); |
7842 | if (!lgot_ents) | |
65f38f15 AM |
7843 | continue; |
7844 | ||
7845 | symtab_hdr = &elf_tdata (ibfd)->symtab_hdr; | |
7846 | locsymcount = symtab_hdr->sh_info; | |
411e1bfb | 7847 | end_lgot_ents = lgot_ents + locsymcount; |
e7b938ca | 7848 | lgot_masks = (char *) end_lgot_ents; |
e717da7e AM |
7849 | s = ppc64_elf_tdata (ibfd)->got; |
7850 | srel = ppc64_elf_tdata (ibfd)->relgot; | |
e7b938ca | 7851 | for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks) |
65f38f15 | 7852 | { |
411e1bfb AM |
7853 | struct got_entry *ent; |
7854 | ||
7855 | for (ent = *lgot_ents; ent != NULL; ent = ent->next) | |
7856 | if (ent->got.refcount > 0) | |
7857 | { | |
e7b938ca | 7858 | if ((ent->tls_type & *lgot_masks & TLS_LD) != 0) |
411e1bfb | 7859 | { |
e717da7e | 7860 | if (ppc64_tlsld_got (ibfd)->offset == (bfd_vma) -1) |
411e1bfb | 7861 | { |
eea6121a AM |
7862 | ppc64_tlsld_got (ibfd)->offset = s->size; |
7863 | s->size += 16; | |
411e1bfb | 7864 | if (info->shared) |
eea6121a | 7865 | srel->size += sizeof (Elf64_External_Rela); |
411e1bfb | 7866 | } |
e717da7e | 7867 | ent->got.offset = ppc64_tlsld_got (ibfd)->offset; |
411e1bfb AM |
7868 | } |
7869 | else | |
7870 | { | |
eea6121a | 7871 | ent->got.offset = s->size; |
e7b938ca | 7872 | if ((ent->tls_type & *lgot_masks & TLS_GD) != 0) |
411e1bfb | 7873 | { |
eea6121a | 7874 | s->size += 16; |
411e1bfb | 7875 | if (info->shared) |
eea6121a | 7876 | srel->size += 2 * sizeof (Elf64_External_Rela); |
411e1bfb AM |
7877 | } |
7878 | else | |
7879 | { | |
eea6121a | 7880 | s->size += 8; |
411e1bfb | 7881 | if (info->shared) |
eea6121a | 7882 | srel->size += sizeof (Elf64_External_Rela); |
411e1bfb AM |
7883 | } |
7884 | } | |
7885 | } | |
7886 | else | |
7887 | ent->got.offset = (bfd_vma) -1; | |
65f38f15 AM |
7888 | } |
7889 | } | |
7890 | ||
7891 | /* Allocate global sym .plt and .got entries, and space for global | |
7892 | sym dynamic relocs. */ | |
4ce794b7 | 7893 | elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info); |
65f38f15 AM |
7894 | |
7895 | /* We now have determined the sizes of the various dynamic sections. | |
7896 | Allocate memory for them. */ | |
b34976b6 | 7897 | relocs = FALSE; |
65f38f15 AM |
7898 | for (s = dynobj->sections; s != NULL; s = s->next) |
7899 | { | |
7900 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
7901 | continue; | |
7902 | ||
4ce794b7 | 7903 | if (s == htab->brlt || s == htab->relbrlt) |
721956f4 AM |
7904 | /* These haven't been allocated yet; don't strip. */ |
7905 | continue; | |
e717da7e AM |
7906 | else if (s == htab->got |
7907 | || s == htab->plt | |
c456f082 AM |
7908 | || s == htab->glink |
7909 | || s == htab->dynbss) | |
65f38f15 AM |
7910 | { |
7911 | /* Strip this section if we don't need it; see the | |
7912 | comment below. */ | |
5bd4f169 | 7913 | } |
65f38f15 | 7914 | else if (strncmp (bfd_get_section_name (dynobj, s), ".rela", 5) == 0) |
5bd4f169 | 7915 | { |
c456f082 | 7916 | if (s->size != 0) |
5bd4f169 | 7917 | { |
4ce794b7 | 7918 | if (s != htab->relplt) |
b34976b6 | 7919 | relocs = TRUE; |
5bd4f169 AM |
7920 | |
7921 | /* We use the reloc_count field as a counter if we need | |
7922 | to copy relocs into the output file. */ | |
7923 | s->reloc_count = 0; | |
7924 | } | |
7925 | } | |
65f38f15 | 7926 | else |
5bd4f169 AM |
7927 | { |
7928 | /* It's not one of our sections, so don't allocate space. */ | |
7929 | continue; | |
7930 | } | |
7931 | ||
eea6121a | 7932 | if (s->size == 0) |
5bd4f169 | 7933 | { |
c456f082 AM |
7934 | /* If we don't need this section, strip it from the |
7935 | output file. This is mostly to handle .rela.bss and | |
7936 | .rela.plt. We must create both sections in | |
7937 | create_dynamic_sections, because they must be created | |
7938 | before the linker maps input sections to output | |
7939 | sections. The linker does that before | |
7940 | adjust_dynamic_symbol is called, and it is that | |
7941 | function which decides whether anything needs to go | |
7942 | into these sections. */ | |
8423293d | 7943 | s->flags |= SEC_EXCLUDE; |
5bd4f169 AM |
7944 | continue; |
7945 | } | |
7946 | ||
c456f082 | 7947 | if ((s->flags & SEC_HAS_CONTENTS) == 0) |
5f333394 AM |
7948 | continue; |
7949 | ||
65f38f15 AM |
7950 | /* Allocate memory for the section contents. We use bfd_zalloc |
7951 | here in case unused entries are not reclaimed before the | |
7952 | section's contents are written out. This should not happen, | |
411e1bfb AM |
7953 | but this way if it does we get a R_PPC64_NONE reloc in .rela |
7954 | sections instead of garbage. | |
7955 | We also rely on the section contents being zero when writing | |
7956 | the GOT. */ | |
eea6121a | 7957 | s->contents = bfd_zalloc (dynobj, s->size); |
65f38f15 | 7958 | if (s->contents == NULL) |
b34976b6 | 7959 | return FALSE; |
5bd4f169 AM |
7960 | } |
7961 | ||
e717da7e AM |
7962 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) |
7963 | { | |
ee75fd95 | 7964 | if (!is_ppc64_elf_target (ibfd->xvec)) |
7b53ace3 AM |
7965 | continue; |
7966 | ||
e717da7e AM |
7967 | s = ppc64_elf_tdata (ibfd)->got; |
7968 | if (s != NULL && s != htab->got) | |
7969 | { | |
eea6121a | 7970 | if (s->size == 0) |
8423293d | 7971 | s->flags |= SEC_EXCLUDE; |
e717da7e AM |
7972 | else |
7973 | { | |
eea6121a | 7974 | s->contents = bfd_zalloc (ibfd, s->size); |
e717da7e AM |
7975 | if (s->contents == NULL) |
7976 | return FALSE; | |
7977 | } | |
7978 | } | |
7979 | s = ppc64_elf_tdata (ibfd)->relgot; | |
7980 | if (s != NULL) | |
7981 | { | |
eea6121a | 7982 | if (s->size == 0) |
8423293d | 7983 | s->flags |= SEC_EXCLUDE; |
e717da7e AM |
7984 | else |
7985 | { | |
eea6121a | 7986 | s->contents = bfd_zalloc (ibfd, s->size); |
e717da7e AM |
7987 | if (s->contents == NULL) |
7988 | return FALSE; | |
7989 | relocs = TRUE; | |
7990 | s->reloc_count = 0; | |
7991 | } | |
7992 | } | |
7993 | } | |
7994 | ||
e86ce104 | 7995 | if (htab->elf.dynamic_sections_created) |
5bd4f169 AM |
7996 | { |
7997 | /* Add some entries to the .dynamic section. We fill in the | |
7998 | values later, in ppc64_elf_finish_dynamic_sections, but we | |
7999 | must add the entries now so that we get the correct size for | |
8000 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
8001 | dynamic linker and used by the debugger. */ | |
dc810e39 | 8002 | #define add_dynamic_entry(TAG, VAL) \ |
5a580b3a | 8003 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) |
dc810e39 | 8004 | |
36af4a4e | 8005 | if (info->executable) |
5bd4f169 | 8006 | { |
dc810e39 | 8007 | if (!add_dynamic_entry (DT_DEBUG, 0)) |
b34976b6 | 8008 | return FALSE; |
5bd4f169 AM |
8009 | } |
8010 | ||
eea6121a | 8011 | if (htab->plt != NULL && htab->plt->size != 0) |
5bd4f169 | 8012 | { |
dc810e39 AM |
8013 | if (!add_dynamic_entry (DT_PLTGOT, 0) |
8014 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
8015 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
5d1634d7 AM |
8016 | || !add_dynamic_entry (DT_JMPREL, 0) |
8017 | || !add_dynamic_entry (DT_PPC64_GLINK, 0)) | |
b34976b6 | 8018 | return FALSE; |
5bd4f169 AM |
8019 | } |
8020 | ||
19397422 AM |
8021 | if (NO_OPD_RELOCS) |
8022 | { | |
8023 | if (!add_dynamic_entry (DT_PPC64_OPD, 0) | |
8024 | || !add_dynamic_entry (DT_PPC64_OPDSZ, 0)) | |
b34976b6 | 8025 | return FALSE; |
19397422 AM |
8026 | } |
8027 | ||
5bd4f169 AM |
8028 | if (relocs) |
8029 | { | |
dc810e39 AM |
8030 | if (!add_dynamic_entry (DT_RELA, 0) |
8031 | || !add_dynamic_entry (DT_RELASZ, 0) | |
8032 | || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela))) | |
b34976b6 | 8033 | return FALSE; |
5bd4f169 | 8034 | |
65f38f15 AM |
8035 | /* If any dynamic relocs apply to a read-only section, |
8036 | then we need a DT_TEXTREL entry. */ | |
248866a8 | 8037 | if ((info->flags & DF_TEXTREL) == 0) |
4ce794b7 | 8038 | elf_link_hash_traverse (&htab->elf, readonly_dynrelocs, info); |
5bd4f169 | 8039 | |
65f38f15 | 8040 | if ((info->flags & DF_TEXTREL) != 0) |
5bd4f169 | 8041 | { |
65f38f15 | 8042 | if (!add_dynamic_entry (DT_TEXTREL, 0)) |
b34976b6 | 8043 | return FALSE; |
5bd4f169 | 8044 | } |
5bd4f169 | 8045 | } |
5bd4f169 | 8046 | } |
65f38f15 | 8047 | #undef add_dynamic_entry |
5bd4f169 | 8048 | |
b34976b6 | 8049 | return TRUE; |
5bd4f169 AM |
8050 | } |
8051 | ||
721956f4 | 8052 | /* Determine the type of stub needed, if any, for a call. */ |
5bd4f169 | 8053 | |
4ce794b7 AM |
8054 | static inline enum ppc_stub_type |
8055 | ppc_type_of_stub (asection *input_sec, | |
8056 | const Elf_Internal_Rela *rel, | |
8057 | struct ppc_link_hash_entry **hash, | |
8058 | bfd_vma destination) | |
5bd4f169 | 8059 | { |
721956f4 AM |
8060 | struct ppc_link_hash_entry *h = *hash; |
8061 | bfd_vma location; | |
8062 | bfd_vma branch_offset; | |
8063 | bfd_vma max_branch_offset; | |
4ce794b7 | 8064 | enum elf_ppc64_reloc_type r_type; |
5bd4f169 | 8065 | |
721956f4 AM |
8066 | if (h != NULL) |
8067 | { | |
7fe2b9a6 AM |
8068 | struct ppc_link_hash_entry *fdh = h; |
8069 | if (fdh->oh != NULL | |
8070 | && fdh->oh->is_func_descriptor) | |
8071 | fdh = fdh->oh; | |
8387904d | 8072 | |
7fe2b9a6 | 8073 | if (fdh->elf.dynindx != -1) |
5bd4f169 | 8074 | { |
411e1bfb | 8075 | struct plt_entry *ent; |
8387904d | 8076 | |
7fe2b9a6 | 8077 | for (ent = fdh->elf.plt.plist; ent != NULL; ent = ent->next) |
411e1bfb AM |
8078 | if (ent->addend == rel->r_addend |
8079 | && ent->plt.offset != (bfd_vma) -1) | |
8080 | { | |
7fe2b9a6 | 8081 | *hash = fdh; |
411e1bfb AM |
8082 | return ppc_stub_plt_call; |
8083 | } | |
5bd4f169 AM |
8084 | } |
8085 | ||
7fe2b9a6 AM |
8086 | /* Here, we know we don't have a plt entry. If we don't have a |
8087 | either a defined function descriptor or a defined entry symbol | |
8088 | in a regular object file, then it is pointless trying to make | |
8089 | any other type of stub. */ | |
8090 | if (!((fdh->elf.root.type == bfd_link_hash_defined | |
8091 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
8092 | && fdh->elf.root.u.def.section->output_section != NULL) | |
8093 | && !((h->elf.root.type == bfd_link_hash_defined | |
8094 | || h->elf.root.type == bfd_link_hash_defweak) | |
8095 | && h->elf.root.u.def.section->output_section != NULL)) | |
721956f4 | 8096 | return ppc_stub_none; |
5d1634d7 | 8097 | } |
5d1634d7 | 8098 | |
721956f4 AM |
8099 | /* Determine where the call point is. */ |
8100 | location = (input_sec->output_offset | |
8101 | + input_sec->output_section->vma | |
8102 | + rel->r_offset); | |
5d1634d7 | 8103 | |
721956f4 AM |
8104 | branch_offset = destination - location; |
8105 | r_type = ELF64_R_TYPE (rel->r_info); | |
5d1634d7 | 8106 | |
721956f4 AM |
8107 | /* Determine if a long branch stub is needed. */ |
8108 | max_branch_offset = 1 << 25; | |
4ce794b7 | 8109 | if (r_type != R_PPC64_REL24) |
721956f4 | 8110 | max_branch_offset = 1 << 15; |
5d1634d7 | 8111 | |
721956f4 AM |
8112 | if (branch_offset + max_branch_offset >= 2 * max_branch_offset) |
8113 | /* We need a stub. Figure out whether a long_branch or plt_branch | |
8114 | is needed later. */ | |
8115 | return ppc_stub_long_branch; | |
5d1634d7 | 8116 | |
721956f4 | 8117 | return ppc_stub_none; |
5d1634d7 AM |
8118 | } |
8119 | ||
8120 | /* Build a .plt call stub. */ | |
8121 | ||
4ce794b7 AM |
8122 | static inline bfd_byte * |
8123 | build_plt_stub (bfd *obfd, bfd_byte *p, int offset) | |
5d1634d7 AM |
8124 | { |
8125 | #define PPC_LO(v) ((v) & 0xffff) | |
8126 | #define PPC_HI(v) (((v) >> 16) & 0xffff) | |
8127 | #define PPC_HA(v) PPC_HI ((v) + 0x8000) | |
8128 | ||
5d1634d7 | 8129 | bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (offset), p), p += 4; |
ad8e1ba5 | 8130 | bfd_put_32 (obfd, STD_R2_40R1, p), p += 4; |
5d1634d7 AM |
8131 | bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset), p), p += 4; |
8132 | if (PPC_HA (offset + 8) != PPC_HA (offset)) | |
ad8e1ba5 | 8133 | bfd_put_32 (obfd, ADDIS_R12_R12 | 1, p), p += 4; |
5d1634d7 AM |
8134 | offset += 8; |
8135 | bfd_put_32 (obfd, LD_R2_0R12 | PPC_LO (offset), p), p += 4; | |
8136 | if (PPC_HA (offset + 8) != PPC_HA (offset)) | |
ad8e1ba5 | 8137 | bfd_put_32 (obfd, ADDIS_R12_R12 | 1, p), p += 4; |
5d1634d7 AM |
8138 | offset += 8; |
8139 | bfd_put_32 (obfd, MTCTR_R11, p), p += 4; | |
8140 | bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset), p), p += 4; | |
8141 | bfd_put_32 (obfd, BCTR, p), p += 4; | |
8142 | return p; | |
8143 | } | |
8144 | ||
b34976b6 | 8145 | static bfd_boolean |
4ce794b7 | 8146 | ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg) |
5d1634d7 | 8147 | { |
721956f4 AM |
8148 | struct ppc_stub_hash_entry *stub_entry; |
8149 | struct ppc_branch_hash_entry *br_entry; | |
5d1634d7 AM |
8150 | struct bfd_link_info *info; |
8151 | struct ppc_link_hash_table *htab; | |
721956f4 AM |
8152 | bfd_byte *loc; |
8153 | bfd_byte *p; | |
8154 | unsigned int indx; | |
411e1bfb | 8155 | struct plt_entry *ent; |
ee75fd95 | 8156 | bfd_vma dest, off; |
721956f4 | 8157 | int size; |
5d1634d7 | 8158 | |
721956f4 AM |
8159 | /* Massage our args to the form they really have. */ |
8160 | stub_entry = (struct ppc_stub_hash_entry *) gen_entry; | |
4ce794b7 | 8161 | info = in_arg; |
5d1634d7 | 8162 | |
5d1634d7 AM |
8163 | htab = ppc_hash_table (info); |
8164 | ||
721956f4 | 8165 | /* Make a note of the offset within the stubs for this entry. */ |
eea6121a | 8166 | stub_entry->stub_offset = stub_entry->stub_sec->size; |
97b639ba | 8167 | loc = stub_entry->stub_sec->contents + stub_entry->stub_offset; |
721956f4 | 8168 | |
4ce794b7 | 8169 | htab->stub_count[stub_entry->stub_type - 1] += 1; |
721956f4 | 8170 | switch (stub_entry->stub_type) |
5d1634d7 | 8171 | { |
721956f4 | 8172 | case ppc_stub_long_branch: |
ad8e1ba5 | 8173 | case ppc_stub_long_branch_r2off: |
721956f4 | 8174 | /* Branches are relative. This is where we are going to. */ |
ee75fd95 AM |
8175 | off = dest = (stub_entry->target_value |
8176 | + stub_entry->target_section->output_offset | |
8177 | + stub_entry->target_section->output_section->vma); | |
5d1634d7 | 8178 | |
721956f4 AM |
8179 | /* And this is where we are coming from. */ |
8180 | off -= (stub_entry->stub_offset | |
97b639ba AM |
8181 | + stub_entry->stub_sec->output_offset |
8182 | + stub_entry->stub_sec->output_section->vma); | |
e86ce104 | 8183 | |
ad8e1ba5 AM |
8184 | if (stub_entry->stub_type != ppc_stub_long_branch_r2off) |
8185 | size = 4; | |
8186 | else | |
8187 | { | |
8188 | bfd_vma r2off; | |
8189 | ||
8190 | r2off = (htab->stub_group[stub_entry->target_section->id].toc_off | |
8191 | - htab->stub_group[stub_entry->id_sec->id].toc_off); | |
97b639ba | 8192 | bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc); |
ad8e1ba5 | 8193 | loc += 4; |
97b639ba | 8194 | bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc); |
ad8e1ba5 | 8195 | loc += 4; |
97b639ba | 8196 | bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc); |
ad8e1ba5 AM |
8197 | loc += 4; |
8198 | off -= 12; | |
8199 | size = 16; | |
8200 | } | |
97b639ba | 8201 | bfd_put_32 (htab->stub_bfd, B_DOT | (off & 0x3fffffc), loc); |
ad8e1ba5 | 8202 | |
5c3dead3 AM |
8203 | if (off + (1 << 25) >= (bfd_vma) (1 << 26)) |
8204 | { | |
8205 | (*_bfd_error_handler) (_("long branch stub `%s' offset overflow"), | |
8206 | stub_entry->root.string); | |
8207 | htab->stub_error = TRUE; | |
8208 | return FALSE; | |
8209 | } | |
ee75fd95 AM |
8210 | |
8211 | if (info->emitrelocations) | |
8212 | { | |
8213 | Elf_Internal_Rela *relocs, *r; | |
8214 | struct bfd_elf_section_data *elfsec_data; | |
8215 | ||
8216 | elfsec_data = elf_section_data (stub_entry->stub_sec); | |
8217 | relocs = elfsec_data->relocs; | |
8218 | if (relocs == NULL) | |
8219 | { | |
8220 | bfd_size_type relsize; | |
8221 | relsize = stub_entry->stub_sec->reloc_count * sizeof (*relocs); | |
8222 | relocs = bfd_alloc (htab->stub_bfd, relsize); | |
8223 | if (relocs == NULL) | |
8224 | return FALSE; | |
8225 | elfsec_data->relocs = relocs; | |
8226 | elfsec_data->rel_hdr.sh_size = relsize; | |
8227 | elfsec_data->rel_hdr.sh_entsize = 24; | |
8228 | stub_entry->stub_sec->reloc_count = 0; | |
8229 | } | |
8230 | r = relocs + stub_entry->stub_sec->reloc_count; | |
8231 | stub_entry->stub_sec->reloc_count += 1; | |
8232 | r->r_offset = loc - stub_entry->stub_sec->contents; | |
8233 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL24); | |
8234 | r->r_addend = dest; | |
8235 | if (stub_entry->h != NULL) | |
8236 | { | |
8237 | struct elf_link_hash_entry **hashes; | |
8238 | unsigned long symndx; | |
8239 | struct ppc_link_hash_entry *h; | |
8240 | ||
8241 | hashes = elf_sym_hashes (htab->stub_bfd); | |
8242 | if (hashes == NULL) | |
8243 | { | |
8244 | bfd_size_type hsize; | |
8245 | ||
8246 | hsize = (htab->stub_globals + 1) * sizeof (*hashes); | |
8247 | hashes = bfd_zalloc (htab->stub_bfd, hsize); | |
8248 | if (hashes == NULL) | |
8249 | return FALSE; | |
8250 | elf_sym_hashes (htab->stub_bfd) = hashes; | |
8251 | htab->stub_globals = 1; | |
8252 | } | |
8253 | symndx = htab->stub_globals++; | |
8254 | h = stub_entry->h; | |
8255 | hashes[symndx] = &h->elf; | |
8256 | r->r_info = ELF64_R_INFO (symndx, R_PPC64_REL24); | |
8257 | if (h->oh != NULL && h->oh->is_func) | |
8258 | h = h->oh; | |
8259 | if (h->elf.root.u.def.section != stub_entry->target_section) | |
8260 | /* H is an opd symbol. The addend must be zero. */ | |
8261 | r->r_addend = 0; | |
8262 | else | |
8263 | { | |
8264 | off = (h->elf.root.u.def.value | |
8265 | + h->elf.root.u.def.section->output_offset | |
8266 | + h->elf.root.u.def.section->output_section->vma); | |
8267 | r->r_addend -= off; | |
8268 | } | |
8269 | } | |
8270 | } | |
721956f4 | 8271 | break; |
e86ce104 | 8272 | |
721956f4 | 8273 | case ppc_stub_plt_branch: |
ad8e1ba5 | 8274 | case ppc_stub_plt_branch_r2off: |
721956f4 AM |
8275 | br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table, |
8276 | stub_entry->root.string + 9, | |
b34976b6 | 8277 | FALSE, FALSE); |
721956f4 AM |
8278 | if (br_entry == NULL) |
8279 | { | |
8280 | (*_bfd_error_handler) (_("can't find branch stub `%s'"), | |
5c3dead3 | 8281 | stub_entry->root.string); |
b34976b6 AM |
8282 | htab->stub_error = TRUE; |
8283 | return FALSE; | |
721956f4 AM |
8284 | } |
8285 | ||
8286 | off = (stub_entry->target_value | |
8287 | + stub_entry->target_section->output_offset | |
8288 | + stub_entry->target_section->output_section->vma); | |
8289 | ||
4ce794b7 AM |
8290 | bfd_put_64 (htab->brlt->owner, off, |
8291 | htab->brlt->contents + br_entry->offset); | |
721956f4 | 8292 | |
ee75fd95 | 8293 | if (htab->relbrlt != NULL) |
721956f4 AM |
8294 | { |
8295 | /* Create a reloc for the branch lookup table entry. */ | |
8296 | Elf_Internal_Rela rela; | |
ad8e1ba5 | 8297 | bfd_byte *rl; |
5d1634d7 | 8298 | |
721956f4 | 8299 | rela.r_offset = (br_entry->offset |
4ce794b7 AM |
8300 | + htab->brlt->output_offset |
8301 | + htab->brlt->output_section->vma); | |
721956f4 AM |
8302 | rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); |
8303 | rela.r_addend = off; | |
8304 | ||
4ce794b7 AM |
8305 | rl = htab->relbrlt->contents; |
8306 | rl += htab->relbrlt->reloc_count++ * sizeof (Elf64_External_Rela); | |
8307 | bfd_elf64_swap_reloca_out (htab->relbrlt->owner, &rela, rl); | |
721956f4 AM |
8308 | } |
8309 | ||
8310 | off = (br_entry->offset | |
4ce794b7 AM |
8311 | + htab->brlt->output_offset |
8312 | + htab->brlt->output_section->vma | |
8313 | - elf_gp (htab->brlt->output_section->owner) | |
ad8e1ba5 | 8314 | - htab->stub_group[stub_entry->id_sec->id].toc_off); |
721956f4 | 8315 | |
ad8e1ba5 | 8316 | if (off + 0x80008000 > 0xffffffff || (off & 7) != 0) |
5d1634d7 AM |
8317 | { |
8318 | (*_bfd_error_handler) | |
e86ce104 | 8319 | (_("linkage table error against `%s'"), |
721956f4 | 8320 | stub_entry->root.string); |
5d1634d7 | 8321 | bfd_set_error (bfd_error_bad_value); |
b34976b6 AM |
8322 | htab->stub_error = TRUE; |
8323 | return FALSE; | |
5d1634d7 | 8324 | } |
41bd81ab | 8325 | |
721956f4 | 8326 | indx = off; |
ad8e1ba5 AM |
8327 | if (stub_entry->stub_type != ppc_stub_plt_branch_r2off) |
8328 | { | |
97b639ba | 8329 | bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (indx), loc); |
ad8e1ba5 | 8330 | loc += 4; |
97b639ba | 8331 | bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (indx), loc); |
ad8e1ba5 AM |
8332 | size = 16; |
8333 | } | |
8334 | else | |
8335 | { | |
8336 | bfd_vma r2off; | |
8337 | ||
8338 | r2off = (htab->stub_group[stub_entry->target_section->id].toc_off | |
8339 | - htab->stub_group[stub_entry->id_sec->id].toc_off); | |
97b639ba | 8340 | bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc); |
ad8e1ba5 | 8341 | loc += 4; |
97b639ba | 8342 | bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (indx), loc); |
ad8e1ba5 | 8343 | loc += 4; |
97b639ba | 8344 | bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (indx), loc); |
ad8e1ba5 | 8345 | loc += 4; |
97b639ba | 8346 | bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc); |
ad8e1ba5 | 8347 | loc += 4; |
97b639ba | 8348 | bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc); |
ad8e1ba5 AM |
8349 | size = 28; |
8350 | } | |
8351 | loc += 4; | |
97b639ba | 8352 | bfd_put_32 (htab->stub_bfd, MTCTR_R11, loc); |
ad8e1ba5 | 8353 | loc += 4; |
97b639ba | 8354 | bfd_put_32 (htab->stub_bfd, BCTR, loc); |
721956f4 | 8355 | break; |
5d1634d7 | 8356 | |
721956f4 | 8357 | case ppc_stub_plt_call: |
c862ae31 AM |
8358 | /* Do the best we can for shared libraries built without |
8359 | exporting ".foo" for each "foo". This can happen when symbol | |
8360 | versioning scripts strip all bar a subset of symbols. */ | |
8387904d AM |
8361 | if (stub_entry->h->oh != NULL |
8362 | && stub_entry->h->oh->elf.root.type != bfd_link_hash_defined | |
34814b9f | 8363 | && stub_entry->h->oh->elf.root.type != bfd_link_hash_defweak) |
c862ae31 AM |
8364 | { |
8365 | /* Point the symbol at the stub. There may be multiple stubs, | |
8366 | we don't really care; The main thing is to make this sym | |
8f3bab57 AM |
8367 | defined somewhere. Maybe defining the symbol in the stub |
8368 | section is a silly idea. If we didn't do this, htab->top_id | |
8369 | could disappear. */ | |
34814b9f AM |
8370 | stub_entry->h->oh->elf.root.type = bfd_link_hash_defined; |
8371 | stub_entry->h->oh->elf.root.u.def.section = stub_entry->stub_sec; | |
8372 | stub_entry->h->oh->elf.root.u.def.value = stub_entry->stub_offset; | |
c862ae31 AM |
8373 | } |
8374 | ||
721956f4 | 8375 | /* Now build the stub. */ |
411e1bfb AM |
8376 | off = (bfd_vma) -1; |
8377 | for (ent = stub_entry->h->elf.plt.plist; ent != NULL; ent = ent->next) | |
8378 | if (ent->addend == stub_entry->addend) | |
8379 | { | |
8380 | off = ent->plt.offset; | |
8381 | break; | |
8382 | } | |
721956f4 AM |
8383 | if (off >= (bfd_vma) -2) |
8384 | abort (); | |
8385 | ||
8386 | off &= ~ (bfd_vma) 1; | |
4ce794b7 AM |
8387 | off += (htab->plt->output_offset |
8388 | + htab->plt->output_section->vma | |
8389 | - elf_gp (htab->plt->output_section->owner) | |
ad8e1ba5 | 8390 | - htab->stub_group[stub_entry->id_sec->id].toc_off); |
721956f4 | 8391 | |
ad8e1ba5 | 8392 | if (off + 0x80008000 > 0xffffffff || (off & 7) != 0) |
721956f4 AM |
8393 | { |
8394 | (*_bfd_error_handler) | |
8395 | (_("linkage table error against `%s'"), | |
8396 | stub_entry->h->elf.root.root.string); | |
8397 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 AM |
8398 | htab->stub_error = TRUE; |
8399 | return FALSE; | |
721956f4 AM |
8400 | } |
8401 | ||
97b639ba | 8402 | p = build_plt_stub (htab->stub_bfd, loc, off); |
721956f4 AM |
8403 | size = p - loc; |
8404 | break; | |
8405 | ||
8406 | default: | |
8407 | BFD_FAIL (); | |
b34976b6 | 8408 | return FALSE; |
721956f4 AM |
8409 | } |
8410 | ||
eea6121a | 8411 | stub_entry->stub_sec->size += size; |
97b639ba | 8412 | |
ee75fd95 | 8413 | if (htab->emit_stub_syms) |
97b639ba AM |
8414 | { |
8415 | struct elf_link_hash_entry *h; | |
ee75fd95 AM |
8416 | size_t len1, len2; |
8417 | char *name; | |
8418 | const char *const stub_str[] = { "long_branch", | |
8419 | "long_branch_r2off", | |
8420 | "plt_branch", | |
8421 | "plt_branch_r2off", | |
8422 | "plt_call" }; | |
8423 | ||
8424 | len1 = strlen (stub_str[stub_entry->stub_type - 1]); | |
8425 | len2 = strlen (stub_entry->root.string); | |
8426 | name = bfd_malloc (len1 + len2 + 2); | |
8427 | if (name == NULL) | |
8428 | return FALSE; | |
8429 | memcpy (name, stub_entry->root.string, 9); | |
8430 | memcpy (name + 9, stub_str[stub_entry->stub_type - 1], len1); | |
8431 | memcpy (name + len1 + 9, stub_entry->root.string + 8, len2 - 8 + 1); | |
8432 | h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE); | |
97b639ba AM |
8433 | if (h == NULL) |
8434 | return FALSE; | |
8435 | if (h->root.type == bfd_link_hash_new) | |
8436 | { | |
8437 | h->root.type = bfd_link_hash_defined; | |
8438 | h->root.u.def.section = stub_entry->stub_sec; | |
8439 | h->root.u.def.value = stub_entry->stub_offset; | |
f5385ebf AM |
8440 | h->ref_regular = 1; |
8441 | h->def_regular = 1; | |
8442 | h->ref_regular_nonweak = 1; | |
8443 | h->forced_local = 1; | |
8444 | h->non_elf = 0; | |
97b639ba AM |
8445 | } |
8446 | } | |
8447 | ||
b34976b6 | 8448 | return TRUE; |
721956f4 AM |
8449 | } |
8450 | ||
8451 | /* As above, but don't actually build the stub. Just bump offset so | |
8452 | we know stub section sizes, and select plt_branch stubs where | |
8453 | long_branch stubs won't do. */ | |
8454 | ||
b34976b6 | 8455 | static bfd_boolean |
4ce794b7 | 8456 | ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg) |
721956f4 AM |
8457 | { |
8458 | struct ppc_stub_hash_entry *stub_entry; | |
63bc6f6c | 8459 | struct bfd_link_info *info; |
721956f4 AM |
8460 | struct ppc_link_hash_table *htab; |
8461 | bfd_vma off; | |
8462 | int size; | |
8463 | ||
8464 | /* Massage our args to the form they really have. */ | |
8465 | stub_entry = (struct ppc_stub_hash_entry *) gen_entry; | |
63bc6f6c AM |
8466 | info = in_arg; |
8467 | ||
8468 | htab = ppc_hash_table (info); | |
721956f4 AM |
8469 | |
8470 | if (stub_entry->stub_type == ppc_stub_plt_call) | |
8471 | { | |
411e1bfb | 8472 | struct plt_entry *ent; |
58ac9f71 | 8473 | off = (bfd_vma) -1; |
411e1bfb AM |
8474 | for (ent = stub_entry->h->elf.plt.plist; ent != NULL; ent = ent->next) |
8475 | if (ent->addend == stub_entry->addend) | |
8476 | { | |
8477 | off = ent->plt.offset & ~(bfd_vma) 1; | |
8478 | break; | |
8479 | } | |
58ac9f71 | 8480 | if (off >= (bfd_vma) -2) |
411e1bfb | 8481 | abort (); |
4ce794b7 AM |
8482 | off += (htab->plt->output_offset |
8483 | + htab->plt->output_section->vma | |
8484 | - elf_gp (htab->plt->output_section->owner) | |
ad8e1ba5 | 8485 | - htab->stub_group[stub_entry->id_sec->id].toc_off); |
721956f4 | 8486 | |
ad8e1ba5 | 8487 | size = PLT_CALL_STUB_SIZE; |
4ce794b7 | 8488 | if (PPC_HA (off + 16) != PPC_HA (off)) |
721956f4 AM |
8489 | size += 4; |
8490 | } | |
8491 | else | |
8492 | { | |
ad8e1ba5 AM |
8493 | /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off |
8494 | variants. */ | |
721956f4 AM |
8495 | off = (stub_entry->target_value |
8496 | + stub_entry->target_section->output_offset | |
8497 | + stub_entry->target_section->output_section->vma); | |
eea6121a | 8498 | off -= (stub_entry->stub_sec->size |
721956f4 AM |
8499 | + stub_entry->stub_sec->output_offset |
8500 | + stub_entry->stub_sec->output_section->vma); | |
8501 | ||
ad8e1ba5 AM |
8502 | /* Reset the stub type from the plt variant in case we now |
8503 | can reach with a shorter stub. */ | |
8504 | if (stub_entry->stub_type >= ppc_stub_plt_branch) | |
8505 | stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch; | |
8506 | ||
8507 | size = 4; | |
8508 | if (stub_entry->stub_type == ppc_stub_long_branch_r2off) | |
8509 | { | |
8510 | off -= 12; | |
8511 | size = 16; | |
8512 | } | |
8513 | ||
8514 | /* If the branch offset if too big, use a ppc_stub_plt_branch. */ | |
721956f4 AM |
8515 | if (off + (1 << 25) >= (bfd_vma) (1 << 26)) |
8516 | { | |
8517 | struct ppc_branch_hash_entry *br_entry; | |
8518 | ||
8519 | br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table, | |
8520 | stub_entry->root.string + 9, | |
b34976b6 | 8521 | TRUE, FALSE); |
721956f4 AM |
8522 | if (br_entry == NULL) |
8523 | { | |
8524 | (*_bfd_error_handler) (_("can't build branch stub `%s'"), | |
5c3dead3 | 8525 | stub_entry->root.string); |
b34976b6 AM |
8526 | htab->stub_error = TRUE; |
8527 | return FALSE; | |
721956f4 AM |
8528 | } |
8529 | ||
8530 | if (br_entry->iter != htab->stub_iteration) | |
8531 | { | |
8532 | br_entry->iter = htab->stub_iteration; | |
eea6121a AM |
8533 | br_entry->offset = htab->brlt->size; |
8534 | htab->brlt->size += 8; | |
63bc6f6c | 8535 | |
ee75fd95 | 8536 | if (htab->relbrlt != NULL) |
eea6121a | 8537 | htab->relbrlt->size += sizeof (Elf64_External_Rela); |
721956f4 | 8538 | } |
ad8e1ba5 AM |
8539 | |
8540 | stub_entry->stub_type += ppc_stub_plt_branch - ppc_stub_long_branch; | |
721956f4 | 8541 | size = 16; |
ad8e1ba5 AM |
8542 | if (stub_entry->stub_type != ppc_stub_plt_branch) |
8543 | size = 28; | |
721956f4 | 8544 | } |
ee75fd95 AM |
8545 | |
8546 | if (info->emitrelocations | |
8547 | && (stub_entry->stub_type == ppc_stub_long_branch | |
8548 | || stub_entry->stub_type == ppc_stub_long_branch_r2off)) | |
8549 | stub_entry->stub_sec->reloc_count += 1; | |
721956f4 AM |
8550 | } |
8551 | ||
eea6121a | 8552 | stub_entry->stub_sec->size += size; |
b34976b6 | 8553 | return TRUE; |
721956f4 AM |
8554 | } |
8555 | ||
8556 | /* Set up various things so that we can make a list of input sections | |
8557 | for each output section included in the link. Returns -1 on error, | |
cedb70c5 | 8558 | 0 when no stubs will be needed, and 1 on success. */ |
721956f4 AM |
8559 | |
8560 | int | |
4c52953f AM |
8561 | ppc64_elf_setup_section_lists (bfd *output_bfd, |
8562 | struct bfd_link_info *info, | |
8563 | int no_multi_toc) | |
721956f4 AM |
8564 | { |
8565 | bfd *input_bfd; | |
734b6cf9 | 8566 | int top_id, top_index, id; |
721956f4 | 8567 | asection *section; |
734b6cf9 | 8568 | asection **input_list; |
721956f4 AM |
8569 | bfd_size_type amt; |
8570 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
8571 | ||
4c52953f AM |
8572 | htab->no_multi_toc = no_multi_toc; |
8573 | ||
4ce794b7 | 8574 | if (htab->brlt == NULL) |
721956f4 AM |
8575 | return 0; |
8576 | ||
1e2f5b6e | 8577 | /* Find the top input section id. */ |
3d6f9012 | 8578 | for (input_bfd = info->input_bfds, top_id = 3; |
721956f4 AM |
8579 | input_bfd != NULL; |
8580 | input_bfd = input_bfd->link_next) | |
8581 | { | |
721956f4 AM |
8582 | for (section = input_bfd->sections; |
8583 | section != NULL; | |
8584 | section = section->next) | |
8585 | { | |
8586 | if (top_id < section->id) | |
8587 | top_id = section->id; | |
8588 | } | |
8589 | } | |
721956f4 | 8590 | |
8f3bab57 | 8591 | htab->top_id = top_id; |
721956f4 | 8592 | amt = sizeof (struct map_stub) * (top_id + 1); |
4ce794b7 | 8593 | htab->stub_group = bfd_zmalloc (amt); |
721956f4 AM |
8594 | if (htab->stub_group == NULL) |
8595 | return -1; | |
8596 | ||
3d6f9012 AM |
8597 | /* Set toc_off for com, und, abs and ind sections. */ |
8598 | for (id = 0; id < 3; id++) | |
8599 | htab->stub_group[id].toc_off = TOC_BASE_OFF; | |
721956f4 | 8600 | |
3d6f9012 | 8601 | elf_gp (output_bfd) = htab->toc_curr = ppc64_elf_toc (output_bfd); |
734b6cf9 AM |
8602 | |
8603 | /* We can't use output_bfd->section_count here to find the top output | |
8604 | section index as some sections may have been removed, and | |
8423293d | 8605 | strip_excluded_output_sections doesn't renumber the indices. */ |
734b6cf9 AM |
8606 | for (section = output_bfd->sections, top_index = 0; |
8607 | section != NULL; | |
8608 | section = section->next) | |
8609 | { | |
8610 | if (top_index < section->index) | |
8611 | top_index = section->index; | |
8612 | } | |
8613 | ||
8614 | htab->top_index = top_index; | |
8615 | amt = sizeof (asection *) * (top_index + 1); | |
4ce794b7 | 8616 | input_list = bfd_zmalloc (amt); |
734b6cf9 AM |
8617 | htab->input_list = input_list; |
8618 | if (input_list == NULL) | |
8619 | return -1; | |
8620 | ||
721956f4 AM |
8621 | return 1; |
8622 | } | |
8623 | ||
e717da7e AM |
8624 | /* The linker repeatedly calls this function for each TOC input section |
8625 | and linker generated GOT section. Group input bfds such that the toc | |
8626 | within a group is less than 64k in size. Will break with cute linker | |
8627 | scripts that play games with dot in the output toc section. */ | |
ad8e1ba5 AM |
8628 | |
8629 | void | |
4ce794b7 | 8630 | ppc64_elf_next_toc_section (struct bfd_link_info *info, asection *isec) |
ad8e1ba5 AM |
8631 | { |
8632 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
8633 | ||
4c52953f AM |
8634 | if (!htab->no_multi_toc) |
8635 | { | |
8636 | bfd_vma addr = isec->output_offset + isec->output_section->vma; | |
8637 | bfd_vma off = addr - htab->toc_curr; | |
8638 | ||
8639 | if (off + isec->size > 0x10000) | |
8640 | htab->toc_curr = addr; | |
99877b66 | 8641 | |
4c52953f AM |
8642 | elf_gp (isec->owner) = (htab->toc_curr |
8643 | - elf_gp (isec->output_section->owner) | |
8644 | + TOC_BASE_OFF); | |
8645 | } | |
ad8e1ba5 AM |
8646 | } |
8647 | ||
8648 | /* Called after the last call to the above function. */ | |
8649 | ||
8650 | void | |
4c52953f | 8651 | ppc64_elf_reinit_toc (bfd *output_bfd, struct bfd_link_info *info) |
ad8e1ba5 AM |
8652 | { |
8653 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
ad8e1ba5 | 8654 | |
4c52953f AM |
8655 | htab->multi_toc_needed = htab->toc_curr != elf_gp (output_bfd); |
8656 | ||
ad8e1ba5 AM |
8657 | /* toc_curr tracks the TOC offset used for code sections below in |
8658 | ppc64_elf_next_input_section. Start off at 0x8000. */ | |
3d6f9012 | 8659 | htab->toc_curr = TOC_BASE_OFF; |
ad8e1ba5 AM |
8660 | } |
8661 | ||
9b5ecbd0 AM |
8662 | /* No toc references were found in ISEC. If the code in ISEC makes no |
8663 | calls, then there's no need to use toc adjusting stubs when branching | |
8664 | into ISEC. Actually, indirect calls from ISEC are OK as they will | |
4c52953f AM |
8665 | load r2. Returns -1 on error, 0 for no stub needed, 1 for stub |
8666 | needed, and 2 if a cyclical call-graph was found but no other reason | |
8667 | for a stub was detected. If called from the top level, a return of | |
8668 | 2 means the same as a return of 0. */ | |
9b5ecbd0 AM |
8669 | |
8670 | static int | |
4ce794b7 | 8671 | toc_adjusting_stub_needed (struct bfd_link_info *info, asection *isec) |
9b5ecbd0 | 8672 | { |
4c52953f AM |
8673 | Elf_Internal_Rela *relstart, *rel; |
8674 | Elf_Internal_Sym *local_syms; | |
9b5ecbd0 | 8675 | int ret; |
4c52953f | 8676 | struct ppc_link_hash_table *htab; |
9b5ecbd0 | 8677 | |
772119ce AM |
8678 | /* We know none of our code bearing sections will need toc stubs. */ |
8679 | if ((isec->flags & SEC_LINKER_CREATED) != 0) | |
8680 | return 0; | |
8681 | ||
eea6121a | 8682 | if (isec->size == 0) |
082c50f8 AM |
8683 | return 0; |
8684 | ||
4c52953f AM |
8685 | if (isec->output_section == NULL) |
8686 | return 0; | |
8687 | ||
9b5ecbd0 AM |
8688 | /* Hack for linux kernel. .fixup contains branches, but only back to |
8689 | the function that hit an exception. */ | |
4c52953f AM |
8690 | if (strcmp (isec->name, ".fixup") == 0) |
8691 | return 0; | |
9b5ecbd0 | 8692 | |
4c52953f AM |
8693 | if (isec->reloc_count == 0) |
8694 | return 0; | |
8695 | ||
8696 | relstart = _bfd_elf_link_read_relocs (isec->owner, isec, NULL, NULL, | |
8697 | info->keep_memory); | |
8698 | if (relstart == NULL) | |
8699 | return -1; | |
8700 | ||
8701 | /* Look for branches to outside of this section. */ | |
8702 | local_syms = NULL; | |
8703 | ret = 0; | |
8704 | htab = ppc_hash_table (info); | |
8705 | for (rel = relstart; rel < relstart + isec->reloc_count; ++rel) | |
9b5ecbd0 | 8706 | { |
4c52953f AM |
8707 | enum elf_ppc64_reloc_type r_type; |
8708 | unsigned long r_symndx; | |
8709 | struct elf_link_hash_entry *h; | |
8710 | Elf_Internal_Sym *sym; | |
8711 | asection *sym_sec; | |
8712 | long *opd_adjust; | |
8713 | bfd_vma sym_value; | |
8714 | bfd_vma dest; | |
8715 | ||
8716 | r_type = ELF64_R_TYPE (rel->r_info); | |
8717 | if (r_type != R_PPC64_REL24 | |
8718 | && r_type != R_PPC64_REL14 | |
8719 | && r_type != R_PPC64_REL14_BRTAKEN | |
8720 | && r_type != R_PPC64_REL14_BRNTAKEN) | |
8721 | continue; | |
8722 | ||
8723 | r_symndx = ELF64_R_SYM (rel->r_info); | |
8724 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, r_symndx, | |
8725 | isec->owner)) | |
9b5ecbd0 | 8726 | { |
4c52953f AM |
8727 | ret = -1; |
8728 | break; | |
9b5ecbd0 | 8729 | } |
9b5ecbd0 | 8730 | |
2917689a AM |
8731 | /* Calls to dynamic lib functions go through a plt call stub |
8732 | that uses r2. Branches to undefined symbols might be a call | |
8733 | using old-style dot symbols that can be satisfied by a plt | |
8734 | call into a new-style dynamic library. */ | |
4c52953f | 8735 | if (sym_sec == NULL) |
2917689a AM |
8736 | { |
8737 | struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h; | |
8738 | if (eh != NULL | |
8739 | && eh->oh != NULL | |
8740 | && eh->oh->elf.plt.plist != NULL) | |
8741 | { | |
8742 | ret = 1; | |
8743 | break; | |
8744 | } | |
4c52953f | 8745 | |
2917689a AM |
8746 | /* Ignore other undefined symbols. */ |
8747 | continue; | |
8748 | } | |
8749 | ||
8750 | /* Assume branches to other sections not included in the link need | |
8751 | stubs too, to cover -R and absolute syms. */ | |
4c52953f AM |
8752 | if (sym_sec->output_section == NULL) |
8753 | { | |
8754 | ret = 1; | |
8755 | break; | |
8756 | } | |
8757 | ||
8758 | if (h == NULL) | |
8759 | sym_value = sym->st_value; | |
8760 | else | |
8761 | { | |
8762 | if (h->root.type != bfd_link_hash_defined | |
8763 | && h->root.type != bfd_link_hash_defweak) | |
8764 | abort (); | |
8765 | sym_value = h->root.u.def.value; | |
8766 | } | |
8767 | sym_value += rel->r_addend; | |
8768 | ||
8769 | /* If this branch reloc uses an opd sym, find the code section. */ | |
8770 | opd_adjust = get_opd_info (sym_sec); | |
8771 | if (opd_adjust != NULL) | |
8772 | { | |
4c52953f AM |
8773 | if (h == NULL) |
8774 | { | |
8775 | long adjust; | |
8776 | ||
8777 | adjust = opd_adjust[sym->st_value / 8]; | |
8778 | if (adjust == -1) | |
8779 | /* Assume deleted functions won't ever be called. */ | |
8780 | continue; | |
8781 | sym_value += adjust; | |
8782 | } | |
8783 | ||
8784 | dest = opd_entry_value (sym_sec, sym_value, &sym_sec, NULL); | |
8785 | if (dest == (bfd_vma) -1) | |
8786 | continue; | |
8787 | } | |
8788 | else | |
8789 | dest = (sym_value | |
8790 | + sym_sec->output_offset | |
8791 | + sym_sec->output_section->vma); | |
8792 | ||
8793 | /* Ignore branch to self. */ | |
8794 | if (sym_sec == isec) | |
8795 | continue; | |
8796 | ||
8797 | /* If the called function uses the toc, we need a stub. */ | |
8798 | if (sym_sec->has_toc_reloc | |
8799 | || sym_sec->makes_toc_func_call) | |
8800 | { | |
8801 | ret = 1; | |
8802 | break; | |
8803 | } | |
8804 | ||
8805 | /* Assume any branch that needs a long branch stub might in fact | |
8806 | need a plt_branch stub. A plt_branch stub uses r2. */ | |
8807 | else if (dest - (isec->output_offset | |
8808 | + isec->output_section->vma | |
8809 | + rel->r_offset) + (1 << 25) >= (2 << 25)) | |
9b5ecbd0 AM |
8810 | { |
8811 | ret = 1; | |
8812 | break; | |
8813 | } | |
4c52953f AM |
8814 | |
8815 | /* If calling back to a section in the process of being tested, we | |
8816 | can't say for sure that no toc adjusting stubs are needed, so | |
8817 | don't return zero. */ | |
8818 | else if (sym_sec->call_check_in_progress) | |
8819 | ret = 2; | |
8820 | ||
8821 | /* Branches to another section that itself doesn't have any TOC | |
8822 | references are OK. Recursively call ourselves to check. */ | |
8823 | else if (sym_sec->id <= htab->top_id | |
8824 | && htab->stub_group[sym_sec->id].toc_off == 0) | |
8825 | { | |
8826 | int recur; | |
8827 | ||
8828 | /* Mark current section as indeterminate, so that other | |
8829 | sections that call back to current won't be marked as | |
8830 | known. */ | |
8831 | isec->call_check_in_progress = 1; | |
8832 | recur = toc_adjusting_stub_needed (info, sym_sec); | |
8833 | isec->call_check_in_progress = 0; | |
8834 | ||
8835 | if (recur < 0) | |
8836 | { | |
8837 | /* An error. Exit. */ | |
8838 | ret = -1; | |
8839 | break; | |
8840 | } | |
8841 | else if (recur <= 1) | |
8842 | { | |
8843 | /* Known result. Mark as checked and set section flag. */ | |
8844 | htab->stub_group[sym_sec->id].toc_off = 1; | |
8845 | if (recur != 0) | |
8846 | { | |
8847 | sym_sec->makes_toc_func_call = 1; | |
8848 | ret = 1; | |
8849 | break; | |
8850 | } | |
8851 | } | |
8852 | else | |
8853 | { | |
8854 | /* Unknown result. Continue checking. */ | |
8855 | ret = 2; | |
8856 | } | |
8857 | } | |
9b5ecbd0 AM |
8858 | } |
8859 | ||
4c52953f AM |
8860 | if (local_syms != NULL |
8861 | && (elf_tdata (isec->owner)->symtab_hdr.contents | |
8862 | != (unsigned char *) local_syms)) | |
8863 | free (local_syms); | |
8864 | if (elf_section_data (isec)->relocs != relstart) | |
8865 | free (relstart); | |
8866 | ||
9b5ecbd0 AM |
8867 | return ret; |
8868 | } | |
8869 | ||
721956f4 AM |
8870 | /* The linker repeatedly calls this function for each input section, |
8871 | in the order that input sections are linked into output sections. | |
8872 | Build lists of input sections to determine groupings between which | |
8873 | we may insert linker stubs. */ | |
8874 | ||
9b5ecbd0 | 8875 | bfd_boolean |
4ce794b7 | 8876 | ppc64_elf_next_input_section (struct bfd_link_info *info, asection *isec) |
721956f4 AM |
8877 | { |
8878 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
8879 | ||
734b6cf9 AM |
8880 | if ((isec->output_section->flags & SEC_CODE) != 0 |
8881 | && isec->output_section->index <= htab->top_index) | |
721956f4 | 8882 | { |
734b6cf9 | 8883 | asection **list = htab->input_list + isec->output_section->index; |
3d6f9012 | 8884 | /* Steal the link_sec pointer for our list. */ |
721956f4 | 8885 | #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec) |
3d6f9012 AM |
8886 | /* This happens to make the list in reverse order, |
8887 | which is what we want. */ | |
734b6cf9 AM |
8888 | PREV_SEC (isec) = *list; |
8889 | *list = isec; | |
721956f4 | 8890 | } |
ad8e1ba5 | 8891 | |
4c52953f | 8892 | if (htab->multi_toc_needed) |
9b5ecbd0 | 8893 | { |
4c52953f AM |
8894 | /* If a code section has a function that uses the TOC then we need |
8895 | to use the right TOC (obviously). Also, make sure that .opd gets | |
8896 | the correct TOC value for R_PPC64_TOC relocs that don't have or | |
8897 | can't find their function symbol (shouldn't ever happen now). */ | |
8898 | if (isec->has_toc_reloc || (isec->flags & SEC_CODE) == 0) | |
8899 | { | |
8900 | if (elf_gp (isec->owner) != 0) | |
8901 | htab->toc_curr = elf_gp (isec->owner); | |
8902 | } | |
8903 | else if (htab->stub_group[isec->id].toc_off == 0) | |
8904 | { | |
8905 | int ret = toc_adjusting_stub_needed (info, isec); | |
8906 | if (ret < 0) | |
8907 | return FALSE; | |
8908 | else | |
8909 | isec->makes_toc_func_call = ret & 1; | |
8910 | } | |
9b5ecbd0 | 8911 | } |
ad8e1ba5 AM |
8912 | |
8913 | /* Functions that don't use the TOC can belong in any TOC group. | |
8914 | Use the last TOC base. This happens to make _init and _fini | |
8915 | pasting work. */ | |
8916 | htab->stub_group[isec->id].toc_off = htab->toc_curr; | |
9b5ecbd0 | 8917 | return TRUE; |
721956f4 AM |
8918 | } |
8919 | ||
8920 | /* See whether we can group stub sections together. Grouping stub | |
8921 | sections may result in fewer stubs. More importantly, we need to | |
8922 | put all .init* and .fini* stubs at the beginning of the .init or | |
8923 | .fini output sections respectively, because glibc splits the | |
8924 | _init and _fini functions into multiple parts. Putting a stub in | |
8925 | the middle of a function is not a good idea. */ | |
8926 | ||
8927 | static void | |
4ce794b7 AM |
8928 | group_sections (struct ppc_link_hash_table *htab, |
8929 | bfd_size_type stub_group_size, | |
8930 | bfd_boolean stubs_always_before_branch) | |
721956f4 | 8931 | { |
734b6cf9 AM |
8932 | asection **list = htab->input_list + htab->top_index; |
8933 | do | |
721956f4 | 8934 | { |
734b6cf9 AM |
8935 | asection *tail = *list; |
8936 | while (tail != NULL) | |
721956f4 | 8937 | { |
734b6cf9 AM |
8938 | asection *curr; |
8939 | asection *prev; | |
8940 | bfd_size_type total; | |
8941 | bfd_boolean big_sec; | |
8942 | bfd_vma curr_toc; | |
8943 | ||
8944 | curr = tail; | |
eea6121a | 8945 | total = tail->size; |
5c3dead3 AM |
8946 | big_sec = total > stub_group_size; |
8947 | if (big_sec) | |
8948 | (*_bfd_error_handler) (_("%B section %A exceeds stub group size"), | |
8949 | tail->owner, tail); | |
734b6cf9 AM |
8950 | curr_toc = htab->stub_group[tail->id].toc_off; |
8951 | ||
8952 | while ((prev = PREV_SEC (curr)) != NULL | |
8953 | && ((total += curr->output_offset - prev->output_offset) | |
ad8e1ba5 AM |
8954 | < stub_group_size) |
8955 | && htab->stub_group[prev->id].toc_off == curr_toc) | |
734b6cf9 AM |
8956 | curr = prev; |
8957 | ||
8958 | /* OK, the size from the start of CURR to the end is less | |
8959 | than stub_group_size and thus can be handled by one stub | |
8960 | section. (or the tail section is itself larger than | |
8961 | stub_group_size, in which case we may be toast.) We | |
8962 | should really be keeping track of the total size of stubs | |
8963 | added here, as stubs contribute to the final output | |
8964 | section size. That's a little tricky, and this way will | |
8965 | only break if stubs added make the total size more than | |
8966 | 2^25, ie. for the default stub_group_size, if stubs total | |
8967 | more than 2097152 bytes, or nearly 75000 plt call stubs. */ | |
8968 | do | |
721956f4 AM |
8969 | { |
8970 | prev = PREV_SEC (tail); | |
734b6cf9 | 8971 | /* Set up this stub group. */ |
721956f4 AM |
8972 | htab->stub_group[tail->id].link_sec = curr; |
8973 | } | |
734b6cf9 AM |
8974 | while (tail != curr && (tail = prev) != NULL); |
8975 | ||
8976 | /* But wait, there's more! Input sections up to stub_group_size | |
8977 | bytes before the stub section can be handled by it too. | |
8978 | Don't do this if we have a really large section after the | |
8979 | stubs, as adding more stubs increases the chance that | |
8980 | branches may not reach into the stub section. */ | |
8981 | if (!stubs_always_before_branch && !big_sec) | |
8982 | { | |
8983 | total = 0; | |
8984 | while (prev != NULL | |
8985 | && ((total += tail->output_offset - prev->output_offset) | |
8986 | < stub_group_size) | |
8987 | && htab->stub_group[prev->id].toc_off == curr_toc) | |
8988 | { | |
8989 | tail = prev; | |
8990 | prev = PREV_SEC (tail); | |
8991 | htab->stub_group[tail->id].link_sec = curr; | |
8992 | } | |
8993 | } | |
8994 | tail = prev; | |
721956f4 AM |
8995 | } |
8996 | } | |
734b6cf9 AM |
8997 | while (list-- != htab->input_list); |
8998 | free (htab->input_list); | |
721956f4 AM |
8999 | #undef PREV_SEC |
9000 | } | |
9001 | ||
721956f4 AM |
9002 | /* Determine and set the size of the stub section for a final link. |
9003 | ||
9004 | The basic idea here is to examine all the relocations looking for | |
9005 | PC-relative calls to a target that is unreachable with a "bl" | |
9006 | instruction. */ | |
9007 | ||
b34976b6 | 9008 | bfd_boolean |
4ce794b7 | 9009 | ppc64_elf_size_stubs (bfd *output_bfd, |
4ce794b7 AM |
9010 | struct bfd_link_info *info, |
9011 | bfd_signed_vma group_size, | |
9012 | asection *(*add_stub_section) (const char *, asection *), | |
9013 | void (*layout_sections_again) (void)) | |
721956f4 AM |
9014 | { |
9015 | bfd_size_type stub_group_size; | |
b34976b6 | 9016 | bfd_boolean stubs_always_before_branch; |
721956f4 AM |
9017 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
9018 | ||
9019 | /* Stash our params away. */ | |
721956f4 AM |
9020 | htab->add_stub_section = add_stub_section; |
9021 | htab->layout_sections_again = layout_sections_again; | |
9022 | stubs_always_before_branch = group_size < 0; | |
9023 | if (group_size < 0) | |
9024 | stub_group_size = -group_size; | |
9025 | else | |
9026 | stub_group_size = group_size; | |
9027 | if (stub_group_size == 1) | |
9028 | { | |
9029 | /* Default values. */ | |
58ac9f71 AM |
9030 | if (stubs_always_before_branch) |
9031 | { | |
9032 | stub_group_size = 0x1e00000; | |
9033 | if (htab->has_14bit_branch) | |
9034 | stub_group_size = 0x7800; | |
9035 | } | |
9036 | else | |
9037 | { | |
9038 | stub_group_size = 0x1c00000; | |
9039 | if (htab->has_14bit_branch) | |
9040 | stub_group_size = 0x7000; | |
9041 | } | |
721956f4 AM |
9042 | } |
9043 | ||
9044 | group_sections (htab, stub_group_size, stubs_always_before_branch); | |
9045 | ||
721956f4 AM |
9046 | while (1) |
9047 | { | |
9048 | bfd *input_bfd; | |
9049 | unsigned int bfd_indx; | |
9050 | asection *stub_sec; | |
721956f4 AM |
9051 | |
9052 | htab->stub_iteration += 1; | |
721956f4 AM |
9053 | |
9054 | for (input_bfd = info->input_bfds, bfd_indx = 0; | |
9055 | input_bfd != NULL; | |
9056 | input_bfd = input_bfd->link_next, bfd_indx++) | |
9057 | { | |
9058 | Elf_Internal_Shdr *symtab_hdr; | |
9059 | asection *section; | |
6cdc0ccc | 9060 | Elf_Internal_Sym *local_syms = NULL; |
721956f4 | 9061 | |
67f93c31 AM |
9062 | if (!is_ppc64_elf_target (input_bfd->xvec)) |
9063 | continue; | |
9064 | ||
721956f4 AM |
9065 | /* We'll need the symbol table in a second. */ |
9066 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
9067 | if (symtab_hdr->sh_info == 0) | |
9068 | continue; | |
9069 | ||
721956f4 AM |
9070 | /* Walk over each section attached to the input bfd. */ |
9071 | for (section = input_bfd->sections; | |
9072 | section != NULL; | |
9073 | section = section->next) | |
9074 | { | |
721956f4 | 9075 | Elf_Internal_Rela *internal_relocs, *irelaend, *irela; |
721956f4 AM |
9076 | |
9077 | /* If there aren't any relocs, then there's nothing more | |
9078 | to do. */ | |
9079 | if ((section->flags & SEC_RELOC) == 0 | |
9080 | || section->reloc_count == 0) | |
9081 | continue; | |
9082 | ||
9083 | /* If this section is a link-once section that will be | |
9084 | discarded, then don't create any stubs. */ | |
9085 | if (section->output_section == NULL | |
9086 | || section->output_section->owner != output_bfd) | |
9087 | continue; | |
9088 | ||
1e2f5b6e AM |
9089 | /* Get the relocs. */ |
9090 | internal_relocs | |
4ce794b7 | 9091 | = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL, |
45d6a902 | 9092 | info->keep_memory); |
721956f4 | 9093 | if (internal_relocs == NULL) |
1e2f5b6e | 9094 | goto error_ret_free_local; |
721956f4 AM |
9095 | |
9096 | /* Now examine each relocation. */ | |
9097 | irela = internal_relocs; | |
9098 | irelaend = irela + section->reloc_count; | |
9099 | for (; irela < irelaend; irela++) | |
9100 | { | |
4ce794b7 AM |
9101 | enum elf_ppc64_reloc_type r_type; |
9102 | unsigned int r_indx; | |
721956f4 AM |
9103 | enum ppc_stub_type stub_type; |
9104 | struct ppc_stub_hash_entry *stub_entry; | |
8387904d | 9105 | asection *sym_sec, *code_sec; |
721956f4 AM |
9106 | bfd_vma sym_value; |
9107 | bfd_vma destination; | |
8843416a | 9108 | bfd_boolean ok_dest; |
721956f4 | 9109 | struct ppc_link_hash_entry *hash; |
8387904d | 9110 | struct ppc_link_hash_entry *fdh; |
411e1bfb AM |
9111 | struct elf_link_hash_entry *h; |
9112 | Elf_Internal_Sym *sym; | |
721956f4 AM |
9113 | char *stub_name; |
9114 | const asection *id_sec; | |
8387904d | 9115 | long *opd_adjust; |
721956f4 AM |
9116 | |
9117 | r_type = ELF64_R_TYPE (irela->r_info); | |
9118 | r_indx = ELF64_R_SYM (irela->r_info); | |
9119 | ||
4ce794b7 | 9120 | if (r_type >= R_PPC64_max) |
721956f4 AM |
9121 | { |
9122 | bfd_set_error (bfd_error_bad_value); | |
6cdc0ccc | 9123 | goto error_ret_free_internal; |
721956f4 AM |
9124 | } |
9125 | ||
9126 | /* Only look for stubs on branch instructions. */ | |
4ce794b7 AM |
9127 | if (r_type != R_PPC64_REL24 |
9128 | && r_type != R_PPC64_REL14 | |
9129 | && r_type != R_PPC64_REL14_BRTAKEN | |
9130 | && r_type != R_PPC64_REL14_BRNTAKEN) | |
721956f4 AM |
9131 | continue; |
9132 | ||
9133 | /* Now determine the call target, its name, value, | |
9134 | section. */ | |
411e1bfb AM |
9135 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, |
9136 | r_indx, input_bfd)) | |
9137 | goto error_ret_free_internal; | |
9138 | hash = (struct ppc_link_hash_entry *) h; | |
9139 | ||
8843416a | 9140 | ok_dest = FALSE; |
8387904d | 9141 | fdh = NULL; |
7fe2b9a6 | 9142 | sym_value = 0; |
411e1bfb | 9143 | if (hash == NULL) |
721956f4 | 9144 | { |
411e1bfb | 9145 | sym_value = sym->st_value; |
8843416a | 9146 | ok_dest = TRUE; |
721956f4 | 9147 | } |
7fe2b9a6 AM |
9148 | else if (hash->elf.root.type == bfd_link_hash_defined |
9149 | || hash->elf.root.type == bfd_link_hash_defweak) | |
9150 | { | |
9151 | sym_value = hash->elf.root.u.def.value; | |
9152 | if (sym_sec->output_section != NULL) | |
9153 | ok_dest = TRUE; | |
9154 | } | |
9155 | else if (hash->elf.root.type == bfd_link_hash_undefweak | |
9156 | || hash->elf.root.type == bfd_link_hash_undefined) | |
721956f4 | 9157 | { |
99877b66 | 9158 | /* Recognise an old ABI func code entry sym, and |
7fe2b9a6 AM |
9159 | use the func descriptor sym instead if it is |
9160 | defined. */ | |
ceb1f1ef | 9161 | if (hash->elf.root.root.string[0] == '.' |
8387904d AM |
9162 | && (fdh = get_fdh (hash, htab)) != NULL) |
9163 | { | |
8387904d AM |
9164 | if (fdh->elf.root.type == bfd_link_hash_defined |
9165 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
9166 | { | |
9167 | sym_sec = fdh->elf.root.u.def.section; | |
9168 | sym_value = fdh->elf.root.u.def.value; | |
9169 | if (sym_sec->output_section != NULL) | |
9170 | ok_dest = TRUE; | |
9171 | } | |
99877b66 AM |
9172 | else |
9173 | fdh = NULL; | |
8387904d | 9174 | } |
7fe2b9a6 AM |
9175 | } |
9176 | else | |
9177 | { | |
9178 | bfd_set_error (bfd_error_bad_value); | |
9179 | goto error_ret_free_internal; | |
721956f4 AM |
9180 | } |
9181 | ||
8843416a AM |
9182 | destination = 0; |
9183 | if (ok_dest) | |
9184 | { | |
9185 | sym_value += irela->r_addend; | |
9186 | destination = (sym_value | |
9187 | + sym_sec->output_offset | |
9188 | + sym_sec->output_section->vma); | |
9189 | } | |
9190 | ||
8387904d AM |
9191 | code_sec = sym_sec; |
9192 | opd_adjust = get_opd_info (sym_sec); | |
9193 | if (opd_adjust != NULL) | |
9194 | { | |
9195 | bfd_vma dest; | |
9196 | ||
9197 | if (hash == NULL) | |
9198 | { | |
3f764659 | 9199 | long adjust = opd_adjust[sym_value / 8]; |
8387904d AM |
9200 | if (adjust == -1) |
9201 | continue; | |
9202 | sym_value += adjust; | |
9203 | } | |
9204 | dest = opd_entry_value (sym_sec, sym_value, | |
9205 | &code_sec, &sym_value); | |
9206 | if (dest != (bfd_vma) -1) | |
9207 | { | |
9208 | destination = dest; | |
9209 | if (fdh != NULL) | |
9210 | { | |
9211 | /* Fixup old ABI sym to point at code | |
9212 | entry. */ | |
99877b66 | 9213 | hash->elf.root.type = bfd_link_hash_defweak; |
8387904d AM |
9214 | hash->elf.root.u.def.section = code_sec; |
9215 | hash->elf.root.u.def.value = sym_value; | |
9216 | } | |
9217 | } | |
9218 | } | |
9219 | ||
721956f4 AM |
9220 | /* Determine what (if any) linker stub is needed. */ |
9221 | stub_type = ppc_type_of_stub (section, irela, &hash, | |
9222 | destination); | |
ad8e1ba5 AM |
9223 | |
9224 | if (stub_type != ppc_stub_plt_call) | |
9225 | { | |
9226 | /* Check whether we need a TOC adjusting stub. | |
9227 | Since the linker pastes together pieces from | |
9228 | different object files when creating the | |
9229 | _init and _fini functions, it may be that a | |
9230 | call to what looks like a local sym is in | |
9231 | fact a call needing a TOC adjustment. */ | |
8387904d AM |
9232 | if (code_sec != NULL |
9233 | && code_sec->output_section != NULL | |
9234 | && (htab->stub_group[code_sec->id].toc_off | |
9b5ecbd0 | 9235 | != htab->stub_group[section->id].toc_off) |
4c52953f AM |
9236 | && (code_sec->has_toc_reloc |
9237 | || code_sec->makes_toc_func_call)) | |
ad8e1ba5 AM |
9238 | stub_type = ppc_stub_long_branch_r2off; |
9239 | } | |
9240 | ||
721956f4 AM |
9241 | if (stub_type == ppc_stub_none) |
9242 | continue; | |
9243 | ||
411e1bfb AM |
9244 | /* __tls_get_addr calls might be eliminated. */ |
9245 | if (stub_type != ppc_stub_plt_call | |
9246 | && hash != NULL | |
8387904d AM |
9247 | && (hash == htab->tls_get_addr |
9248 | || hash == htab->tls_get_addr_fd) | |
411e1bfb AM |
9249 | && section->has_tls_reloc |
9250 | && irela != internal_relocs) | |
9251 | { | |
9252 | /* Get tls info. */ | |
e7b938ca | 9253 | char *tls_mask; |
411e1bfb | 9254 | |
0d4792f7 | 9255 | if (!get_tls_mask (&tls_mask, NULL, &local_syms, |
411e1bfb AM |
9256 | irela - 1, input_bfd)) |
9257 | goto error_ret_free_internal; | |
e7b938ca | 9258 | if (*tls_mask != 0) |
411e1bfb AM |
9259 | continue; |
9260 | } | |
9261 | ||
721956f4 AM |
9262 | /* Support for grouping stub sections. */ |
9263 | id_sec = htab->stub_group[section->id].link_sec; | |
9264 | ||
9265 | /* Get the name of this stub. */ | |
9266 | stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela); | |
9267 | if (!stub_name) | |
9268 | goto error_ret_free_internal; | |
9269 | ||
9270 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, | |
b34976b6 | 9271 | stub_name, FALSE, FALSE); |
721956f4 AM |
9272 | if (stub_entry != NULL) |
9273 | { | |
9274 | /* The proper stub has already been created. */ | |
9275 | free (stub_name); | |
9276 | continue; | |
9277 | } | |
9278 | ||
9279 | stub_entry = ppc_add_stub (stub_name, section, htab); | |
9280 | if (stub_entry == NULL) | |
9281 | { | |
9282 | free (stub_name); | |
6cdc0ccc AM |
9283 | error_ret_free_internal: |
9284 | if (elf_section_data (section)->relocs == NULL) | |
9285 | free (internal_relocs); | |
9286 | error_ret_free_local: | |
9287 | if (local_syms != NULL | |
9288 | && (symtab_hdr->contents | |
9289 | != (unsigned char *) local_syms)) | |
9290 | free (local_syms); | |
b34976b6 | 9291 | return FALSE; |
721956f4 AM |
9292 | } |
9293 | ||
ad8e1ba5 | 9294 | stub_entry->stub_type = stub_type; |
721956f4 | 9295 | stub_entry->target_value = sym_value; |
8387904d | 9296 | stub_entry->target_section = code_sec; |
721956f4 | 9297 | stub_entry->h = hash; |
411e1bfb | 9298 | stub_entry->addend = irela->r_addend; |
ee75fd95 AM |
9299 | |
9300 | if (stub_entry->h != NULL) | |
9301 | htab->stub_globals += 1; | |
721956f4 AM |
9302 | } |
9303 | ||
9304 | /* We're done with the internal relocs, free them. */ | |
6cdc0ccc | 9305 | if (elf_section_data (section)->relocs != internal_relocs) |
1e2f5b6e | 9306 | free (internal_relocs); |
721956f4 | 9307 | } |
6cdc0ccc AM |
9308 | |
9309 | if (local_syms != NULL | |
9310 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
9311 | { | |
9312 | if (!info->keep_memory) | |
9313 | free (local_syms); | |
9314 | else | |
9315 | symtab_hdr->contents = (unsigned char *) local_syms; | |
9316 | } | |
721956f4 AM |
9317 | } |
9318 | ||
5c3dead3 | 9319 | /* We may have added some stubs. Find out the new size of the |
721956f4 AM |
9320 | stub sections. */ |
9321 | for (stub_sec = htab->stub_bfd->sections; | |
9322 | stub_sec != NULL; | |
9323 | stub_sec = stub_sec->next) | |
e717da7e | 9324 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) |
ee75fd95 | 9325 | { |
5c3dead3 | 9326 | stub_sec->rawsize = stub_sec->size; |
ee75fd95 AM |
9327 | stub_sec->size = 0; |
9328 | stub_sec->reloc_count = 0; | |
9329 | } | |
eea6121a AM |
9330 | |
9331 | htab->brlt->size = 0; | |
ee75fd95 | 9332 | if (htab->relbrlt != NULL) |
eea6121a | 9333 | htab->relbrlt->size = 0; |
721956f4 | 9334 | |
63bc6f6c | 9335 | bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, info); |
721956f4 | 9336 | |
5c3dead3 AM |
9337 | for (stub_sec = htab->stub_bfd->sections; |
9338 | stub_sec != NULL; | |
9339 | stub_sec = stub_sec->next) | |
9340 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0 | |
9341 | && stub_sec->rawsize != stub_sec->size) | |
9342 | break; | |
9343 | ||
9344 | /* Exit from this loop when no stubs have been added, and no stubs | |
9345 | have changed size. */ | |
9346 | if (stub_sec == NULL) | |
9347 | break; | |
9348 | ||
721956f4 AM |
9349 | /* Ask the linker to do its stuff. */ |
9350 | (*htab->layout_sections_again) (); | |
9351 | } | |
9352 | ||
c456f082 | 9353 | /* It would be nice to strip htab->brlt from the output if the |
afbe61cf AM |
9354 | section is empty, but it's too late. If we strip sections here, |
9355 | the dynamic symbol table is corrupted since the section symbol | |
9356 | for the stripped section isn't written. */ | |
721956f4 | 9357 | |
b34976b6 | 9358 | return TRUE; |
721956f4 AM |
9359 | } |
9360 | ||
9361 | /* Called after we have determined section placement. If sections | |
805fc799 | 9362 | move, we'll be called again. Provide a value for TOCstart. */ |
721956f4 | 9363 | |
805fc799 | 9364 | bfd_vma |
4ce794b7 | 9365 | ppc64_elf_toc (bfd *obfd) |
721956f4 | 9366 | { |
805fc799 AM |
9367 | asection *s; |
9368 | bfd_vma TOCstart; | |
721956f4 | 9369 | |
805fc799 AM |
9370 | /* The TOC consists of sections .got, .toc, .tocbss, .plt in that |
9371 | order. The TOC starts where the first of these sections starts. */ | |
9372 | s = bfd_get_section_by_name (obfd, ".got"); | |
9373 | if (s == NULL) | |
9374 | s = bfd_get_section_by_name (obfd, ".toc"); | |
9375 | if (s == NULL) | |
9376 | s = bfd_get_section_by_name (obfd, ".tocbss"); | |
9377 | if (s == NULL) | |
9378 | s = bfd_get_section_by_name (obfd, ".plt"); | |
9379 | if (s == NULL) | |
9380 | { | |
9381 | /* This may happen for | |
9382 | o references to TOC base (SYM@toc / TOC[tc0]) without a | |
9383 | .toc directive | |
9384 | o bad linker script | |
9385 | o --gc-sections and empty TOC sections | |
9386 | ||
9387 | FIXME: Warn user? */ | |
9388 | ||
9389 | /* Look for a likely section. We probably won't even be | |
9390 | using TOCstart. */ | |
9391 | for (s = obfd->sections; s != NULL; s = s->next) | |
9392 | if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY)) | |
9393 | == (SEC_ALLOC | SEC_SMALL_DATA)) | |
9394 | break; | |
721956f4 | 9395 | if (s == NULL) |
805fc799 AM |
9396 | for (s = obfd->sections; s != NULL; s = s->next) |
9397 | if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA)) | |
9398 | == (SEC_ALLOC | SEC_SMALL_DATA)) | |
9399 | break; | |
721956f4 | 9400 | if (s == NULL) |
805fc799 AM |
9401 | for (s = obfd->sections; s != NULL; s = s->next) |
9402 | if ((s->flags & (SEC_ALLOC | SEC_READONLY)) == SEC_ALLOC) | |
9403 | break; | |
721956f4 | 9404 | if (s == NULL) |
805fc799 AM |
9405 | for (s = obfd->sections; s != NULL; s = s->next) |
9406 | if ((s->flags & SEC_ALLOC) == SEC_ALLOC) | |
9407 | break; | |
9408 | } | |
721956f4 | 9409 | |
805fc799 AM |
9410 | TOCstart = 0; |
9411 | if (s != NULL) | |
9412 | TOCstart = s->output_section->vma + s->output_offset; | |
721956f4 | 9413 | |
805fc799 | 9414 | return TOCstart; |
721956f4 AM |
9415 | } |
9416 | ||
9417 | /* Build all the stubs associated with the current output file. | |
9418 | The stubs are kept in a hash table attached to the main linker | |
9419 | hash table. This function is called via gldelf64ppc_finish. */ | |
9420 | ||
b34976b6 | 9421 | bfd_boolean |
4ce794b7 AM |
9422 | ppc64_elf_build_stubs (bfd_boolean emit_stub_syms, |
9423 | struct bfd_link_info *info, | |
9424 | char **stats) | |
5d1634d7 AM |
9425 | { |
9426 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
721956f4 | 9427 | asection *stub_sec; |
5d1634d7 | 9428 | bfd_byte *p; |
e717da7e | 9429 | int stub_sec_count = 0; |
5d1634d7 | 9430 | |
ad8e1ba5 | 9431 | htab->emit_stub_syms = emit_stub_syms; |
eea6121a AM |
9432 | |
9433 | /* Allocate memory to hold the linker stubs. */ | |
721956f4 AM |
9434 | for (stub_sec = htab->stub_bfd->sections; |
9435 | stub_sec != NULL; | |
9436 | stub_sec = stub_sec->next) | |
eea6121a AM |
9437 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0 |
9438 | && stub_sec->size != 0) | |
e717da7e | 9439 | { |
eea6121a AM |
9440 | stub_sec->contents = bfd_zalloc (htab->stub_bfd, stub_sec->size); |
9441 | if (stub_sec->contents == NULL) | |
9442 | return FALSE; | |
9443 | /* We want to check that built size is the same as calculated | |
9444 | size. rawsize is a convenient location to use. */ | |
9445 | stub_sec->rawsize = stub_sec->size; | |
9446 | stub_sec->size = 0; | |
e717da7e | 9447 | } |
5d1634d7 | 9448 | |
4ce794b7 | 9449 | if (htab->plt != NULL) |
5d1634d7 | 9450 | { |
9f951329 | 9451 | unsigned int indx; |
ad8e1ba5 | 9452 | bfd_vma plt0; |
9f951329 | 9453 | |
721956f4 | 9454 | /* Build the .glink plt call stub. */ |
4ce794b7 AM |
9455 | plt0 = (htab->plt->output_section->vma |
9456 | + htab->plt->output_offset | |
9457 | - (htab->glink->output_section->vma | |
9458 | + htab->glink->output_offset | |
ad8e1ba5 AM |
9459 | + GLINK_CALL_STUB_SIZE)); |
9460 | if (plt0 + 0x80008000 > 0xffffffff) | |
721956f4 | 9461 | { |
ad8e1ba5 AM |
9462 | (*_bfd_error_handler) (_(".glink and .plt too far apart")); |
9463 | bfd_set_error (bfd_error_bad_value); | |
9464 | return FALSE; | |
721956f4 | 9465 | } |
721956f4 | 9466 | |
97b639ba AM |
9467 | if (htab->emit_stub_syms) |
9468 | { | |
9469 | struct elf_link_hash_entry *h; | |
9470 | h = elf_link_hash_lookup (&htab->elf, "__glink", TRUE, FALSE, FALSE); | |
9471 | if (h == NULL) | |
9472 | return FALSE; | |
9473 | if (h->root.type == bfd_link_hash_new) | |
9474 | { | |
9475 | h->root.type = bfd_link_hash_defined; | |
9476 | h->root.u.def.section = htab->glink; | |
9477 | h->root.u.def.value = 0; | |
f5385ebf AM |
9478 | h->ref_regular = 1; |
9479 | h->def_regular = 1; | |
9480 | h->ref_regular_nonweak = 1; | |
9481 | h->forced_local = 1; | |
9482 | h->non_elf = 0; | |
97b639ba AM |
9483 | } |
9484 | } | |
4ce794b7 AM |
9485 | p = htab->glink->contents; |
9486 | bfd_put_32 (htab->glink->owner, MFCTR_R12, p); | |
ad8e1ba5 | 9487 | p += 4; |
4ce794b7 | 9488 | bfd_put_32 (htab->glink->owner, SLDI_R11_R0_3, p); |
ad8e1ba5 | 9489 | p += 4; |
4ce794b7 | 9490 | bfd_put_32 (htab->glink->owner, ADDIC_R2_R0_32K, p); |
ad8e1ba5 | 9491 | p += 4; |
4ce794b7 | 9492 | bfd_put_32 (htab->glink->owner, SUB_R12_R12_R11, p); |
ad8e1ba5 | 9493 | p += 4; |
4ce794b7 | 9494 | bfd_put_32 (htab->glink->owner, SRADI_R2_R2_63, p); |
ad8e1ba5 | 9495 | p += 4; |
4ce794b7 | 9496 | bfd_put_32 (htab->glink->owner, SLDI_R11_R0_2, p); |
ad8e1ba5 | 9497 | p += 4; |
4ce794b7 | 9498 | bfd_put_32 (htab->glink->owner, AND_R2_R2_R11, p); |
ad8e1ba5 | 9499 | p += 4; |
4ce794b7 | 9500 | bfd_put_32 (htab->glink->owner, SUB_R12_R12_R11, p); |
ad8e1ba5 | 9501 | p += 4; |
4ce794b7 | 9502 | bfd_put_32 (htab->glink->owner, ADD_R12_R12_R2, p); |
ad8e1ba5 | 9503 | p += 4; |
4ce794b7 | 9504 | bfd_put_32 (htab->glink->owner, ADDIS_R12_R12 | PPC_HA (plt0), p); |
ad8e1ba5 | 9505 | p += 4; |
4ce794b7 | 9506 | bfd_put_32 (htab->glink->owner, LD_R11_0R12 | PPC_LO (plt0), p); |
ad8e1ba5 | 9507 | p += 4; |
4ce794b7 | 9508 | bfd_put_32 (htab->glink->owner, ADDI_R12_R12 | PPC_LO (plt0), p); |
ad8e1ba5 | 9509 | p += 4; |
4ce794b7 | 9510 | bfd_put_32 (htab->glink->owner, LD_R2_0R12 | 8, p); |
ad8e1ba5 | 9511 | p += 4; |
4ce794b7 | 9512 | bfd_put_32 (htab->glink->owner, MTCTR_R11, p); |
ad8e1ba5 | 9513 | p += 4; |
4ce794b7 | 9514 | bfd_put_32 (htab->glink->owner, LD_R11_0R12 | 16, p); |
ad8e1ba5 | 9515 | p += 4; |
4ce794b7 | 9516 | bfd_put_32 (htab->glink->owner, BCTR, p); |
ad8e1ba5 AM |
9517 | p += 4; |
9518 | ||
9f951329 AM |
9519 | /* Build the .glink lazy link call stubs. */ |
9520 | indx = 0; | |
eea6121a | 9521 | while (p < htab->glink->contents + htab->glink->size) |
9f951329 AM |
9522 | { |
9523 | if (indx < 0x8000) | |
9524 | { | |
4ce794b7 | 9525 | bfd_put_32 (htab->glink->owner, LI_R0_0 | indx, p); |
9f951329 AM |
9526 | p += 4; |
9527 | } | |
9528 | else | |
9529 | { | |
4ce794b7 | 9530 | bfd_put_32 (htab->glink->owner, LIS_R0_0 | PPC_HI (indx), p); |
9f951329 | 9531 | p += 4; |
4ce794b7 | 9532 | bfd_put_32 (htab->glink->owner, ORI_R0_R0_0 | PPC_LO (indx), p); |
9f951329 AM |
9533 | p += 4; |
9534 | } | |
4ce794b7 AM |
9535 | bfd_put_32 (htab->glink->owner, |
9536 | B_DOT | ((htab->glink->contents - p) & 0x3fffffc), p); | |
a16d5acb | 9537 | indx++; |
9f951329 AM |
9538 | p += 4; |
9539 | } | |
eea6121a | 9540 | htab->glink->rawsize = p - htab->glink->contents; |
5d1634d7 | 9541 | } |
5d1634d7 | 9542 | |
eea6121a | 9543 | if (htab->brlt->size != 0) |
721956f4 | 9544 | { |
4ce794b7 | 9545 | htab->brlt->contents = bfd_zalloc (htab->brlt->owner, |
eea6121a | 9546 | htab->brlt->size); |
4ce794b7 | 9547 | if (htab->brlt->contents == NULL) |
b34976b6 | 9548 | return FALSE; |
721956f4 | 9549 | } |
ee75fd95 | 9550 | if (htab->relbrlt != NULL && htab->relbrlt->size != 0) |
63bc6f6c AM |
9551 | { |
9552 | htab->relbrlt->contents = bfd_zalloc (htab->relbrlt->owner, | |
eea6121a | 9553 | htab->relbrlt->size); |
63bc6f6c AM |
9554 | if (htab->relbrlt->contents == NULL) |
9555 | return FALSE; | |
9556 | } | |
5d1634d7 | 9557 | |
721956f4 AM |
9558 | /* Build the stubs as directed by the stub hash table. */ |
9559 | bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info); | |
5d1634d7 | 9560 | |
721956f4 AM |
9561 | for (stub_sec = htab->stub_bfd->sections; |
9562 | stub_sec != NULL; | |
9563 | stub_sec = stub_sec->next) | |
e717da7e AM |
9564 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) |
9565 | { | |
9566 | stub_sec_count += 1; | |
eea6121a | 9567 | if (stub_sec->rawsize != stub_sec->size) |
e717da7e AM |
9568 | break; |
9569 | } | |
5d1634d7 | 9570 | |
721956f4 | 9571 | if (stub_sec != NULL |
eea6121a | 9572 | || htab->glink->rawsize != htab->glink->size) |
5d1634d7 | 9573 | { |
b34976b6 | 9574 | htab->stub_error = TRUE; |
721956f4 | 9575 | (*_bfd_error_handler) (_("stubs don't match calculated size")); |
5d1634d7 | 9576 | } |
721956f4 | 9577 | |
d2a300cf AM |
9578 | if (htab->stub_error) |
9579 | return FALSE; | |
9580 | ||
9581 | if (stats != NULL) | |
9582 | { | |
9583 | *stats = bfd_malloc (500); | |
9584 | if (*stats == NULL) | |
9585 | return FALSE; | |
9586 | ||
ee75fd95 | 9587 | sprintf (*stats, _("linker stubs in %u group%s\n" |
d2a300cf AM |
9588 | " branch %lu\n" |
9589 | " toc adjust %lu\n" | |
9590 | " long branch %lu\n" | |
9591 | " long toc adj %lu\n" | |
9592 | " plt call %lu"), | |
e717da7e | 9593 | stub_sec_count, |
ee75fd95 | 9594 | stub_sec_count == 1 ? "" : "s", |
4ce794b7 AM |
9595 | htab->stub_count[ppc_stub_long_branch - 1], |
9596 | htab->stub_count[ppc_stub_long_branch_r2off - 1], | |
9597 | htab->stub_count[ppc_stub_plt_branch - 1], | |
9598 | htab->stub_count[ppc_stub_plt_branch_r2off - 1], | |
9599 | htab->stub_count[ppc_stub_plt_call - 1]); | |
d2a300cf AM |
9600 | } |
9601 | return TRUE; | |
5bd4f169 AM |
9602 | } |
9603 | ||
99877b66 AM |
9604 | /* This function undoes the changes made by add_symbol_adjust. */ |
9605 | ||
9606 | static bfd_boolean | |
9607 | undo_symbol_twiddle (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED) | |
9608 | { | |
9609 | struct ppc_link_hash_entry *eh; | |
9610 | ||
9611 | if (h->root.type == bfd_link_hash_indirect) | |
9612 | return TRUE; | |
9613 | ||
9614 | if (h->root.type == bfd_link_hash_warning) | |
9615 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
9616 | ||
9617 | eh = (struct ppc_link_hash_entry *) h; | |
9618 | if (eh->elf.root.type != bfd_link_hash_undefweak || !eh->was_undefined) | |
9619 | return TRUE; | |
9620 | ||
9621 | eh->elf.root.type = bfd_link_hash_undefined; | |
9622 | return TRUE; | |
9623 | } | |
9624 | ||
9625 | void | |
9626 | ppc64_elf_restore_symbols (struct bfd_link_info *info) | |
9627 | { | |
9628 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
9629 | elf_link_hash_traverse (&htab->elf, undo_symbol_twiddle, info); | |
9630 | } | |
9631 | ||
60124e18 AM |
9632 | /* What to do when ld finds relocations against symbols defined in |
9633 | discarded sections. */ | |
9634 | ||
9635 | static unsigned int | |
9636 | ppc64_elf_action_discarded (asection *sec) | |
9637 | { | |
9638 | if (strcmp (".opd", sec->name) == 0) | |
9639 | return 0; | |
9640 | ||
9641 | if (strcmp (".toc", sec->name) == 0) | |
9642 | return 0; | |
9643 | ||
bce50a28 JJ |
9644 | if (strcmp (".toc1", sec->name) == 0) |
9645 | return 0; | |
9646 | ||
60124e18 AM |
9647 | return _bfd_elf_default_action_discarded (sec); |
9648 | } | |
9649 | ||
5bd4f169 AM |
9650 | /* The RELOCATE_SECTION function is called by the ELF backend linker |
9651 | to handle the relocations for a section. | |
9652 | ||
9653 | The relocs are always passed as Rela structures; if the section | |
9654 | actually uses Rel structures, the r_addend field will always be | |
9655 | zero. | |
9656 | ||
9657 | This function is responsible for adjust the section contents as | |
9658 | necessary, and (if using Rela relocs and generating a | |
1049f94e | 9659 | relocatable output file) adjusting the reloc addend as |
5bd4f169 AM |
9660 | necessary. |
9661 | ||
9662 | This function does not have to worry about setting the reloc | |
9663 | address or the reloc symbol index. | |
9664 | ||
9665 | LOCAL_SYMS is a pointer to the swapped in local symbols. | |
9666 | ||
9667 | LOCAL_SECTIONS is an array giving the section in the input file | |
9668 | corresponding to the st_shndx field of each local symbol. | |
9669 | ||
9670 | The global hash table entry for the global symbols can be found | |
9671 | via elf_sym_hashes (input_bfd). | |
9672 | ||
1049f94e | 9673 | When generating relocatable output, this function must handle |
5bd4f169 AM |
9674 | STB_LOCAL/STT_SECTION symbols specially. The output symbol is |
9675 | going to be the section symbol corresponding to the output | |
9676 | section, which means that the addend must be adjusted | |
9677 | accordingly. */ | |
9678 | ||
b34976b6 | 9679 | static bfd_boolean |
4ce794b7 AM |
9680 | ppc64_elf_relocate_section (bfd *output_bfd, |
9681 | struct bfd_link_info *info, | |
9682 | bfd *input_bfd, | |
9683 | asection *input_section, | |
9684 | bfd_byte *contents, | |
9685 | Elf_Internal_Rela *relocs, | |
9686 | Elf_Internal_Sym *local_syms, | |
9687 | asection **local_sections) | |
5bd4f169 | 9688 | { |
65f38f15 | 9689 | struct ppc_link_hash_table *htab; |
5bd4f169 AM |
9690 | Elf_Internal_Shdr *symtab_hdr; |
9691 | struct elf_link_hash_entry **sym_hashes; | |
5bd4f169 AM |
9692 | Elf_Internal_Rela *rel; |
9693 | Elf_Internal_Rela *relend; | |
411e1bfb AM |
9694 | Elf_Internal_Rela outrel; |
9695 | bfd_byte *loc; | |
411e1bfb | 9696 | struct got_entry **local_got_ents; |
5bd4f169 | 9697 | bfd_vma TOCstart; |
b34976b6 AM |
9698 | bfd_boolean ret = TRUE; |
9699 | bfd_boolean is_opd; | |
96e0dda4 | 9700 | /* Disabled until we sort out how ld should choose 'y' vs 'at'. */ |
b34976b6 | 9701 | bfd_boolean is_power4 = FALSE; |
5bd4f169 | 9702 | |
65f38f15 | 9703 | /* Initialize howto table if needed. */ |
5bd4f169 | 9704 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) |
5bd4f169 AM |
9705 | ppc_howto_init (); |
9706 | ||
65f38f15 | 9707 | htab = ppc_hash_table (info); |
ee75fd95 AM |
9708 | |
9709 | /* Don't relocate stub sections. */ | |
9710 | if (input_section->owner == htab->stub_bfd) | |
9711 | return TRUE; | |
9712 | ||
411e1bfb | 9713 | local_got_ents = elf_local_got_ents (input_bfd); |
5bd4f169 | 9714 | TOCstart = elf_gp (output_bfd); |
5bd4f169 AM |
9715 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; |
9716 | sym_hashes = elf_sym_hashes (input_bfd); | |
f0abc2a1 | 9717 | is_opd = ppc64_elf_section_data (input_section)->opd.adjust != NULL; |
65f38f15 | 9718 | |
5bd4f169 AM |
9719 | rel = relocs; |
9720 | relend = relocs + input_section->reloc_count; | |
9721 | for (; rel < relend; rel++) | |
9722 | { | |
04c9666a | 9723 | enum elf_ppc64_reloc_type r_type; |
4cc603a5 | 9724 | bfd_vma addend, orig_addend; |
5bd4f169 AM |
9725 | bfd_reloc_status_type r; |
9726 | Elf_Internal_Sym *sym; | |
9727 | asection *sec; | |
039b3fef AM |
9728 | struct elf_link_hash_entry *h_elf; |
9729 | struct ppc_link_hash_entry *h; | |
9730 | struct ppc_link_hash_entry *fdh; | |
5bd4f169 | 9731 | const char *sym_name; |
0d4792f7 | 9732 | unsigned long r_symndx, toc_symndx; |
951fd09b | 9733 | char tls_mask, tls_gd, tls_type; |
0d4792f7 | 9734 | char sym_type; |
5bd4f169 | 9735 | bfd_vma relocation; |
b34976b6 AM |
9736 | bfd_boolean unresolved_reloc; |
9737 | bfd_boolean warned; | |
50bc7936 | 9738 | unsigned long insn, mask; |
721956f4 AM |
9739 | struct ppc_stub_hash_entry *stub_entry; |
9740 | bfd_vma max_br_offset; | |
9741 | bfd_vma from; | |
5bd4f169 | 9742 | |
4ce794b7 | 9743 | r_type = ELF64_R_TYPE (rel->r_info); |
5bd4f169 | 9744 | r_symndx = ELF64_R_SYM (rel->r_info); |
ee87f2da AM |
9745 | |
9746 | /* For old style R_PPC64_TOC relocs with a zero symbol, use the | |
9747 | symbol of the previous ADDR64 reloc. The symbol gives us the | |
9748 | proper TOC base to use. */ | |
9749 | if (rel->r_info == ELF64_R_INFO (0, R_PPC64_TOC) | |
9750 | && rel != relocs | |
9751 | && ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_ADDR64 | |
9752 | && is_opd) | |
9753 | r_symndx = ELF64_R_SYM (rel[-1].r_info); | |
9754 | ||
4ce794b7 AM |
9755 | sym = NULL; |
9756 | sec = NULL; | |
039b3fef | 9757 | h_elf = NULL; |
4ce794b7 | 9758 | sym_name = NULL; |
b34976b6 AM |
9759 | unresolved_reloc = FALSE; |
9760 | warned = FALSE; | |
4cc603a5 | 9761 | orig_addend = rel->r_addend; |
65f38f15 | 9762 | |
0b13192e | 9763 | if (r_symndx < symtab_hdr->sh_info) |
5bd4f169 AM |
9764 | { |
9765 | /* It's a local symbol. */ | |
4025353c AM |
9766 | long *opd_adjust; |
9767 | ||
5bd4f169 AM |
9768 | sym = local_syms + r_symndx; |
9769 | sec = local_sections[r_symndx]; | |
26c61ae5 | 9770 | sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec); |
0d4792f7 | 9771 | sym_type = ELF64_ST_TYPE (sym->st_info); |
8517fae7 | 9772 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); |
4025353c AM |
9773 | opd_adjust = get_opd_info (sec); |
9774 | if (opd_adjust != NULL) | |
1e2f5b6e | 9775 | { |
3f764659 | 9776 | long adjust = opd_adjust[(sym->st_value + rel->r_addend) / 8]; |
4025353c AM |
9777 | if (adjust == -1) |
9778 | relocation = 0; | |
9779 | else | |
4cc603a5 AM |
9780 | { |
9781 | /* If this is a relocation against the opd section sym | |
9782 | and we have edited .opd, adjust the reloc addend so | |
9783 | that ld -r and ld --emit-relocs output is correct. | |
9784 | If it is a reloc against some other .opd symbol, | |
9785 | then the symbol value will be adjusted later. */ | |
9786 | if (ELF_ST_TYPE (sym->st_info) == STT_SECTION) | |
9787 | rel->r_addend += adjust; | |
9788 | else | |
9789 | relocation += adjust; | |
9790 | } | |
1e2f5b6e | 9791 | } |
4cc603a5 AM |
9792 | if (info->relocatable) |
9793 | continue; | |
5bd4f169 AM |
9794 | } |
9795 | else | |
9796 | { | |
4cc603a5 AM |
9797 | if (info->relocatable) |
9798 | continue; | |
b2a8e766 AM |
9799 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
9800 | r_symndx, symtab_hdr, sym_hashes, | |
039b3fef | 9801 | h_elf, sec, relocation, |
b2a8e766 | 9802 | unresolved_reloc, warned); |
039b3fef AM |
9803 | sym_name = h_elf->root.root.string; |
9804 | sym_type = h_elf->type; | |
5bd4f169 | 9805 | } |
039b3fef | 9806 | h = (struct ppc_link_hash_entry *) h_elf; |
5bd4f169 | 9807 | |
951fd09b AM |
9808 | /* TLS optimizations. Replace instruction sequences and relocs |
9809 | based on information we collected in tls_optimize. We edit | |
9810 | RELOCS so that --emit-relocs will output something sensible | |
9811 | for the final instruction stream. */ | |
9812 | tls_mask = 0; | |
9813 | tls_gd = 0; | |
0d4792f7 | 9814 | toc_symndx = 0; |
d881513a | 9815 | if (IS_PPC64_TLS_RELOC (r_type)) |
411e1bfb AM |
9816 | { |
9817 | if (h != NULL) | |
039b3fef | 9818 | tls_mask = h->tls_mask; |
411e1bfb AM |
9819 | else if (local_got_ents != NULL) |
9820 | { | |
e7b938ca AM |
9821 | char *lgot_masks; |
9822 | lgot_masks = (char *) (local_got_ents + symtab_hdr->sh_info); | |
9823 | tls_mask = lgot_masks[r_symndx]; | |
411e1bfb | 9824 | } |
0d4792f7 AM |
9825 | if (tls_mask == 0 && r_type == R_PPC64_TLS) |
9826 | { | |
9827 | /* Check for toc tls entries. */ | |
9828 | char *toc_tls; | |
9829 | ||
9830 | if (!get_tls_mask (&toc_tls, &toc_symndx, &local_syms, | |
9831 | rel, input_bfd)) | |
9832 | return FALSE; | |
9833 | ||
9834 | if (toc_tls) | |
9835 | tls_mask = *toc_tls; | |
9836 | } | |
9837 | } | |
9838 | ||
9839 | /* Check that tls relocs are used with tls syms, and non-tls | |
9840 | relocs are used with non-tls syms. */ | |
9841 | if (r_symndx != 0 | |
9842 | && r_type != R_PPC64_NONE | |
9843 | && (h == NULL | |
039b3fef AM |
9844 | || h->elf.root.type == bfd_link_hash_defined |
9845 | || h->elf.root.type == bfd_link_hash_defweak) | |
0d4792f7 AM |
9846 | && IS_PPC64_TLS_RELOC (r_type) != (sym_type == STT_TLS)) |
9847 | { | |
9848 | if (r_type == R_PPC64_TLS && tls_mask != 0) | |
9849 | /* R_PPC64_TLS is OK against a symbol in the TOC. */ | |
9850 | ; | |
9851 | else | |
9852 | (*_bfd_error_handler) | |
9853 | (sym_type == STT_TLS | |
d003868e AM |
9854 | ? _("%B(%A+0x%lx): %s used with TLS symbol %s") |
9855 | : _("%B(%A+0x%lx): %s used with non-TLS symbol %s"), | |
9856 | input_bfd, | |
9857 | input_section, | |
0d4792f7 AM |
9858 | (long) rel->r_offset, |
9859 | ppc64_elf_howto_table[r_type]->name, | |
9860 | sym_name); | |
411e1bfb AM |
9861 | } |
9862 | ||
9863 | /* Ensure reloc mapping code below stays sane. */ | |
9864 | if (R_PPC64_TOC16_LO_DS != R_PPC64_TOC16_DS + 1 | |
9865 | || R_PPC64_TOC16_LO != R_PPC64_TOC16 + 1 | |
9866 | || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TLSGD16 & 3) | |
9867 | || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TLSGD16_LO & 3) | |
9868 | || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TLSGD16_HI & 3) | |
9869 | || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TLSGD16_HA & 3) | |
9870 | || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TPREL16_DS & 3) | |
9871 | || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TPREL16_LO_DS & 3) | |
9872 | || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TPREL16_HI & 3) | |
9873 | || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TPREL16_HA & 3)) | |
9874 | abort (); | |
0d4792f7 | 9875 | |
411e1bfb AM |
9876 | switch (r_type) |
9877 | { | |
9878 | default: | |
411e1bfb AM |
9879 | break; |
9880 | ||
9881 | case R_PPC64_TOC16: | |
9882 | case R_PPC64_TOC16_LO: | |
9883 | case R_PPC64_TOC16_DS: | |
9884 | case R_PPC64_TOC16_LO_DS: | |
411e1bfb AM |
9885 | { |
9886 | /* Check for toc tls entries. */ | |
9887 | char *toc_tls; | |
951fd09b | 9888 | int retval; |
411e1bfb | 9889 | |
0d4792f7 AM |
9890 | retval = get_tls_mask (&toc_tls, &toc_symndx, &local_syms, |
9891 | rel, input_bfd); | |
951fd09b | 9892 | if (retval == 0) |
411e1bfb AM |
9893 | return FALSE; |
9894 | ||
9895 | if (toc_tls) | |
9896 | { | |
951fd09b | 9897 | tls_mask = *toc_tls; |
411e1bfb AM |
9898 | if (r_type == R_PPC64_TOC16_DS |
9899 | || r_type == R_PPC64_TOC16_LO_DS) | |
81407a69 AM |
9900 | { |
9901 | if (tls_mask != 0 | |
9902 | && (tls_mask & (TLS_DTPREL | TLS_TPREL)) == 0) | |
9903 | goto toctprel; | |
9904 | } | |
411e1bfb | 9905 | else |
951fd09b AM |
9906 | { |
9907 | /* If we found a GD reloc pair, then we might be | |
9908 | doing a GD->IE transition. */ | |
9909 | if (retval == 2) | |
9910 | { | |
9911 | tls_gd = TLS_TPRELGD; | |
9912 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
9913 | goto tls_get_addr_check; | |
9914 | } | |
9915 | else if (retval == 3) | |
9916 | { | |
9917 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) | |
9918 | goto tls_get_addr_check; | |
9919 | } | |
9920 | } | |
411e1bfb AM |
9921 | } |
9922 | } | |
9923 | break; | |
9924 | ||
9925 | case R_PPC64_GOT_TPREL16_DS: | |
9926 | case R_PPC64_GOT_TPREL16_LO_DS: | |
951fd09b AM |
9927 | if (tls_mask != 0 |
9928 | && (tls_mask & TLS_TPREL) == 0) | |
411e1bfb | 9929 | { |
81407a69 | 9930 | toctprel: |
411e1bfb AM |
9931 | insn = bfd_get_32 (output_bfd, contents + rel->r_offset - 2); |
9932 | insn &= 31 << 21; | |
9933 | insn |= 0x3c0d0000; /* addis 0,13,0 */ | |
9934 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset - 2); | |
9935 | r_type = R_PPC64_TPREL16_HA; | |
0d4792f7 AM |
9936 | if (toc_symndx != 0) |
9937 | { | |
9938 | rel->r_info = ELF64_R_INFO (toc_symndx, r_type); | |
9939 | /* We changed the symbol. Start over in order to | |
9940 | get h, sym, sec etc. right. */ | |
9941 | rel--; | |
9942 | continue; | |
9943 | } | |
9944 | else | |
9945 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
411e1bfb AM |
9946 | } |
9947 | break; | |
9948 | ||
9949 | case R_PPC64_TLS: | |
951fd09b AM |
9950 | if (tls_mask != 0 |
9951 | && (tls_mask & TLS_TPREL) == 0) | |
411e1bfb | 9952 | { |
50bc7936 | 9953 | bfd_vma rtra; |
411e1bfb | 9954 | insn = bfd_get_32 (output_bfd, contents + rel->r_offset); |
772119ce | 9955 | if ((insn & ((0x3f << 26) | (31 << 11))) |
411e1bfb AM |
9956 | == ((31 << 26) | (13 << 11))) |
9957 | rtra = insn & ((1 << 26) - (1 << 16)); | |
772119ce | 9958 | else if ((insn & ((0x3f << 26) | (31 << 16))) |
411e1bfb AM |
9959 | == ((31 << 26) | (13 << 16))) |
9960 | rtra = (insn & (31 << 21)) | ((insn & (31 << 11)) << 5); | |
9961 | else | |
9962 | abort (); | |
9963 | if ((insn & ((1 << 11) - (1 << 1))) == 266 << 1) | |
9964 | /* add -> addi. */ | |
9965 | insn = 14 << 26; | |
9966 | else if ((insn & (31 << 1)) == 23 << 1 | |
9967 | && ((insn & (31 << 6)) < 14 << 6 | |
9968 | || ((insn & (31 << 6)) >= 16 << 6 | |
9969 | && (insn & (31 << 6)) < 24 << 6))) | |
9970 | /* load and store indexed -> dform. */ | |
9971 | insn = (32 | ((insn >> 6) & 31)) << 26; | |
9972 | else if ((insn & (31 << 1)) == 21 << 1 | |
9973 | && (insn & (0x1a << 6)) == 0) | |
9974 | /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */ | |
9975 | insn = (((58 | ((insn >> 6) & 4)) << 26) | |
9976 | | ((insn >> 6) & 1)); | |
9977 | else if ((insn & (31 << 1)) == 21 << 1 | |
9978 | && (insn & ((1 << 11) - (1 << 1))) == 341 << 1) | |
9979 | /* lwax -> lwa. */ | |
9980 | insn = (58 << 26) | 2; | |
9981 | else | |
9982 | abort (); | |
9983 | insn |= rtra; | |
9984 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset); | |
411e1bfb AM |
9985 | /* Was PPC64_TLS which sits on insn boundary, now |
9986 | PPC64_TPREL16_LO which is at insn+2. */ | |
9987 | rel->r_offset += 2; | |
0d4792f7 AM |
9988 | r_type = R_PPC64_TPREL16_LO; |
9989 | if (toc_symndx != 0) | |
9990 | { | |
9991 | rel->r_info = ELF64_R_INFO (toc_symndx, r_type); | |
9992 | /* We changed the symbol. Start over in order to | |
9993 | get h, sym, sec etc. right. */ | |
9994 | rel--; | |
9995 | continue; | |
9996 | } | |
9997 | else | |
9998 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
411e1bfb AM |
9999 | } |
10000 | break; | |
10001 | ||
411e1bfb AM |
10002 | case R_PPC64_GOT_TLSGD16_HI: |
10003 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b AM |
10004 | tls_gd = TLS_TPRELGD; |
10005 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
10006 | goto tls_gdld_hi; | |
10007 | break; | |
10008 | ||
411e1bfb AM |
10009 | case R_PPC64_GOT_TLSLD16_HI: |
10010 | case R_PPC64_GOT_TLSLD16_HA: | |
951fd09b | 10011 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) |
411e1bfb | 10012 | { |
951fd09b AM |
10013 | tls_gdld_hi: |
10014 | if ((tls_mask & tls_gd) != 0) | |
10015 | r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3) | |
10016 | + R_PPC64_GOT_TPREL16_DS); | |
10017 | else | |
411e1bfb | 10018 | { |
951fd09b AM |
10019 | bfd_put_32 (output_bfd, NOP, contents + rel->r_offset); |
10020 | rel->r_offset -= 2; | |
10021 | r_type = R_PPC64_NONE; | |
411e1bfb | 10022 | } |
951fd09b | 10023 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); |
411e1bfb AM |
10024 | } |
10025 | break; | |
10026 | ||
951fd09b AM |
10027 | case R_PPC64_GOT_TLSGD16: |
10028 | case R_PPC64_GOT_TLSGD16_LO: | |
10029 | tls_gd = TLS_TPRELGD; | |
10030 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
10031 | goto tls_get_addr_check; | |
10032 | break; | |
411e1bfb | 10033 | |
951fd09b AM |
10034 | case R_PPC64_GOT_TLSLD16: |
10035 | case R_PPC64_GOT_TLSLD16_LO: | |
10036 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) | |
10037 | { | |
10038 | tls_get_addr_check: | |
10039 | if (rel + 1 < relend) | |
411e1bfb | 10040 | { |
951fd09b AM |
10041 | enum elf_ppc64_reloc_type r_type2; |
10042 | unsigned long r_symndx2; | |
10043 | struct elf_link_hash_entry *h2; | |
10044 | bfd_vma insn1, insn2, insn3; | |
10045 | bfd_vma offset; | |
10046 | ||
10047 | /* The next instruction should be a call to | |
10048 | __tls_get_addr. Peek at the reloc to be sure. */ | |
4ce794b7 | 10049 | r_type2 = ELF64_R_TYPE (rel[1].r_info); |
951fd09b AM |
10050 | r_symndx2 = ELF64_R_SYM (rel[1].r_info); |
10051 | if (r_symndx2 < symtab_hdr->sh_info | |
10052 | || (r_type2 != R_PPC64_REL14 | |
10053 | && r_type2 != R_PPC64_REL14_BRTAKEN | |
10054 | && r_type2 != R_PPC64_REL14_BRNTAKEN | |
10055 | && r_type2 != R_PPC64_REL24)) | |
10056 | break; | |
10057 | ||
10058 | h2 = sym_hashes[r_symndx2 - symtab_hdr->sh_info]; | |
10059 | while (h2->root.type == bfd_link_hash_indirect | |
10060 | || h2->root.type == bfd_link_hash_warning) | |
10061 | h2 = (struct elf_link_hash_entry *) h2->root.u.i.link; | |
8387904d AM |
10062 | if (h2 == NULL || (h2 != &htab->tls_get_addr->elf |
10063 | && h2 != &htab->tls_get_addr_fd->elf)) | |
951fd09b AM |
10064 | break; |
10065 | ||
10066 | /* OK, it checks out. Replace the call. */ | |
10067 | offset = rel[1].r_offset; | |
10068 | insn1 = bfd_get_32 (output_bfd, | |
10069 | contents + rel->r_offset - 2); | |
10070 | insn3 = bfd_get_32 (output_bfd, | |
10071 | contents + offset + 4); | |
10072 | if ((tls_mask & tls_gd) != 0) | |
411e1bfb | 10073 | { |
951fd09b AM |
10074 | /* IE */ |
10075 | insn1 &= (1 << 26) - (1 << 2); | |
10076 | insn1 |= 58 << 26; /* ld */ | |
10077 | insn2 = 0x7c636a14; /* add 3,3,13 */ | |
10078 | rel[1].r_info = ELF64_R_INFO (r_symndx2, R_PPC64_NONE); | |
10079 | if ((tls_mask & TLS_EXPLICIT) == 0) | |
10080 | r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3) | |
10081 | + R_PPC64_GOT_TPREL16_DS); | |
10082 | else | |
10083 | r_type += R_PPC64_TOC16_DS - R_PPC64_TOC16; | |
10084 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
411e1bfb AM |
10085 | } |
10086 | else | |
951fd09b AM |
10087 | { |
10088 | /* LE */ | |
10089 | insn1 = 0x3c6d0000; /* addis 3,13,0 */ | |
10090 | insn2 = 0x38630000; /* addi 3,3,0 */ | |
10091 | if (tls_gd == 0) | |
10092 | { | |
10093 | /* Was an LD reloc. */ | |
10094 | r_symndx = 0; | |
e1918d23 AM |
10095 | rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; |
10096 | rel[1].r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; | |
951fd09b | 10097 | } |
0d4792f7 AM |
10098 | else if (toc_symndx != 0) |
10099 | r_symndx = toc_symndx; | |
951fd09b AM |
10100 | r_type = R_PPC64_TPREL16_HA; |
10101 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
10102 | rel[1].r_info = ELF64_R_INFO (r_symndx, | |
10103 | R_PPC64_TPREL16_LO); | |
10104 | rel[1].r_offset += 2; | |
10105 | } | |
10106 | if (insn3 == NOP | |
10107 | || insn3 == CROR_151515 || insn3 == CROR_313131) | |
10108 | { | |
10109 | insn3 = insn2; | |
10110 | insn2 = NOP; | |
10111 | rel[1].r_offset += 4; | |
10112 | } | |
10113 | bfd_put_32 (output_bfd, insn1, contents + rel->r_offset - 2); | |
10114 | bfd_put_32 (output_bfd, insn2, contents + offset); | |
10115 | bfd_put_32 (output_bfd, insn3, contents + offset + 4); | |
0d4792f7 | 10116 | if (tls_gd == 0 || toc_symndx != 0) |
951fd09b | 10117 | { |
0d4792f7 AM |
10118 | /* We changed the symbol. Start over in order |
10119 | to get h, sym, sec etc. right. */ | |
951fd09b AM |
10120 | rel--; |
10121 | continue; | |
10122 | } | |
411e1bfb | 10123 | } |
411e1bfb | 10124 | } |
411e1bfb AM |
10125 | break; |
10126 | ||
10127 | case R_PPC64_DTPMOD64: | |
951fd09b AM |
10128 | if (rel + 1 < relend |
10129 | && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64) | |
10130 | && rel[1].r_offset == rel->r_offset + 8) | |
411e1bfb | 10131 | { |
951fd09b AM |
10132 | if ((tls_mask & TLS_GD) == 0) |
10133 | { | |
10134 | rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_NONE); | |
10135 | if ((tls_mask & TLS_TPRELGD) != 0) | |
10136 | r_type = R_PPC64_TPREL64; | |
10137 | else | |
10138 | { | |
4ce794b7 | 10139 | bfd_put_64 (output_bfd, 1, contents + rel->r_offset); |
951fd09b AM |
10140 | r_type = R_PPC64_NONE; |
10141 | } | |
10142 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
10143 | } | |
10144 | } | |
10145 | else | |
10146 | { | |
10147 | if ((tls_mask & TLS_LD) == 0) | |
411e1bfb | 10148 | { |
4ce794b7 | 10149 | bfd_put_64 (output_bfd, 1, contents + rel->r_offset); |
411e1bfb | 10150 | r_type = R_PPC64_NONE; |
951fd09b | 10151 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); |
411e1bfb | 10152 | } |
411e1bfb AM |
10153 | } |
10154 | break; | |
10155 | ||
10156 | case R_PPC64_TPREL64: | |
951fd09b | 10157 | if ((tls_mask & TLS_TPREL) == 0) |
411e1bfb AM |
10158 | { |
10159 | r_type = R_PPC64_NONE; | |
10160 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
10161 | } | |
10162 | break; | |
10163 | } | |
10164 | ||
10165 | /* Handle other relocations that tweak non-addend part of insn. */ | |
86c76c7b | 10166 | insn = 0; |
b25116a9 AM |
10167 | max_br_offset = 1 << 25; |
10168 | addend = rel->r_addend; | |
65f38f15 | 10169 | switch (r_type) |
5bd4f169 AM |
10170 | { |
10171 | default: | |
65f38f15 | 10172 | break; |
5bd4f169 | 10173 | |
65f38f15 AM |
10174 | /* Branch taken prediction relocations. */ |
10175 | case R_PPC64_ADDR14_BRTAKEN: | |
10176 | case R_PPC64_REL14_BRTAKEN: | |
cedb70c5 KH |
10177 | insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */ |
10178 | /* Fall thru. */ | |
65f38f15 | 10179 | |
86c76c7b | 10180 | /* Branch not taken prediction relocations. */ |
65f38f15 AM |
10181 | case R_PPC64_ADDR14_BRNTAKEN: |
10182 | case R_PPC64_REL14_BRNTAKEN: | |
411e1bfb AM |
10183 | insn |= bfd_get_32 (output_bfd, |
10184 | contents + rel->r_offset) & ~(0x01 << 21); | |
b25116a9 | 10185 | /* Fall thru. */ |
86c76c7b | 10186 | |
b25116a9 AM |
10187 | case R_PPC64_REL14: |
10188 | max_br_offset = 1 << 15; | |
10189 | /* Fall thru. */ | |
5bd4f169 | 10190 | |
65f38f15 | 10191 | case R_PPC64_REL24: |
ad8e1ba5 AM |
10192 | /* Calls to functions with a different TOC, such as calls to |
10193 | shared objects, need to alter the TOC pointer. This is | |
10194 | done using a linkage stub. A REL24 branching to these | |
10195 | linkage stubs needs to be followed by a nop, as the nop | |
10196 | will be replaced with an instruction to restore the TOC | |
10197 | base pointer. */ | |
b25116a9 | 10198 | stub_entry = NULL; |
8387904d | 10199 | fdh = h; |
ad8e1ba5 | 10200 | if (((h != NULL |
039b3fef AM |
10201 | && (((fdh = h->oh) != NULL |
10202 | && fdh->elf.plt.plist != NULL) | |
10203 | || (fdh = h)->elf.plt.plist != NULL)) | |
8387904d | 10204 | || (sec != NULL |
ad8e1ba5 | 10205 | && sec->output_section != NULL |
b25116a9 | 10206 | && sec->id <= htab->top_id |
ad8e1ba5 AM |
10207 | && (htab->stub_group[sec->id].toc_off |
10208 | != htab->stub_group[input_section->id].toc_off))) | |
721956f4 | 10209 | && (stub_entry = ppc_get_stub_entry (input_section, sec, fdh, |
ad8e1ba5 AM |
10210 | rel, htab)) != NULL |
10211 | && (stub_entry->stub_type == ppc_stub_plt_call | |
10212 | || stub_entry->stub_type == ppc_stub_plt_branch_r2off | |
10213 | || stub_entry->stub_type == ppc_stub_long_branch_r2off)) | |
41bd81ab | 10214 | { |
b25116a9 | 10215 | bfd_boolean can_plt_call = FALSE; |
721956f4 | 10216 | |
eea6121a | 10217 | if (rel->r_offset + 8 <= input_section->size) |
41bd81ab | 10218 | { |
b25116a9 AM |
10219 | unsigned long nop; |
10220 | nop = bfd_get_32 (input_bfd, contents + rel->r_offset + 4); | |
10221 | if (nop == NOP | |
10222 | || nop == CROR_151515 || nop == CROR_313131) | |
41bd81ab | 10223 | { |
4ce794b7 | 10224 | bfd_put_32 (input_bfd, LD_R2_40R1, |
411e1bfb | 10225 | contents + rel->r_offset + 4); |
b25116a9 | 10226 | can_plt_call = TRUE; |
41bd81ab | 10227 | } |
5bd4f169 | 10228 | } |
721956f4 AM |
10229 | |
10230 | if (!can_plt_call) | |
10231 | { | |
ad8e1ba5 AM |
10232 | if (stub_entry->stub_type == ppc_stub_plt_call) |
10233 | { | |
10234 | /* If this is a plain branch rather than a branch | |
4fa1c237 AM |
10235 | and link, don't require a nop. However, don't |
10236 | allow tail calls in a shared library as they | |
10237 | will result in r2 being corrupted. */ | |
b25116a9 AM |
10238 | unsigned long br; |
10239 | br = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
4fa1c237 | 10240 | if (info->executable && (br & 1) == 0) |
b25116a9 | 10241 | can_plt_call = TRUE; |
15b552e9 AM |
10242 | else |
10243 | stub_entry = NULL; | |
ad8e1ba5 | 10244 | } |
6ab189d5 | 10245 | else if (h != NULL |
039b3fef | 10246 | && strcmp (h->elf.root.root.string, |
6ab189d5 AM |
10247 | ".__libc_start_main") == 0) |
10248 | { | |
10249 | /* Allow crt1 branch to go via a toc adjusting stub. */ | |
b25116a9 | 10250 | can_plt_call = TRUE; |
6ab189d5 | 10251 | } |
ad8e1ba5 AM |
10252 | else |
10253 | { | |
10254 | if (strcmp (input_section->output_section->name, | |
10255 | ".init") == 0 | |
10256 | || strcmp (input_section->output_section->name, | |
10257 | ".fini") == 0) | |
10258 | (*_bfd_error_handler) | |
d003868e | 10259 | (_("%B(%A+0x%lx): automatic multiple TOCs " |
ad8e1ba5 AM |
10260 | "not supported using your crt files; " |
10261 | "recompile with -mminimal-toc or upgrade gcc"), | |
d003868e AM |
10262 | input_bfd, |
10263 | input_section, | |
ad8e1ba5 AM |
10264 | (long) rel->r_offset); |
10265 | else | |
10266 | (*_bfd_error_handler) | |
d003868e | 10267 | (_("%B(%A+0x%lx): sibling call optimization to `%s' " |
ad8e1ba5 AM |
10268 | "does not allow automatic multiple TOCs; " |
10269 | "recompile with -mminimal-toc or " | |
10270 | "-fno-optimize-sibling-calls, " | |
10271 | "or make `%s' extern"), | |
d003868e AM |
10272 | input_bfd, |
10273 | input_section, | |
ad8e1ba5 AM |
10274 | (long) rel->r_offset, |
10275 | sym_name, | |
10276 | sym_name); | |
10277 | bfd_set_error (bfd_error_bad_value); | |
10278 | ret = FALSE; | |
10279 | } | |
721956f4 AM |
10280 | } |
10281 | ||
b25116a9 AM |
10282 | if (can_plt_call |
10283 | && stub_entry->stub_type == ppc_stub_plt_call) | |
10284 | unresolved_reloc = FALSE; | |
10285 | } | |
10286 | ||
8387904d AM |
10287 | if (stub_entry == NULL |
10288 | && get_opd_info (sec) != NULL) | |
10289 | { | |
10290 | /* The branch destination is the value of the opd entry. */ | |
4cc603a5 AM |
10291 | bfd_vma off = (relocation + addend |
10292 | - sec->output_section->vma | |
10293 | - sec->output_offset); | |
8387904d AM |
10294 | bfd_vma dest = opd_entry_value (sec, off, NULL, NULL); |
10295 | if (dest != (bfd_vma) -1) | |
10296 | { | |
10297 | relocation = dest; | |
10298 | addend = 0; | |
10299 | } | |
10300 | } | |
10301 | ||
b25116a9 AM |
10302 | /* If the branch is out of reach we ought to have a long |
10303 | branch stub. */ | |
10304 | from = (rel->r_offset | |
10305 | + input_section->output_offset | |
10306 | + input_section->output_section->vma); | |
10307 | ||
10308 | if (stub_entry == NULL | |
4cc603a5 | 10309 | && (relocation + addend - from + max_br_offset |
b25116a9 AM |
10310 | >= 2 * max_br_offset) |
10311 | && r_type != R_PPC64_ADDR14_BRTAKEN | |
10312 | && r_type != R_PPC64_ADDR14_BRNTAKEN) | |
039b3fef AM |
10313 | stub_entry = ppc_get_stub_entry (input_section, sec, h, rel, |
10314 | htab); | |
b25116a9 AM |
10315 | |
10316 | if (stub_entry != NULL) | |
10317 | { | |
10318 | /* Munge up the value and addend so that we call the stub | |
10319 | rather than the procedure directly. */ | |
10320 | relocation = (stub_entry->stub_offset | |
10321 | + stub_entry->stub_sec->output_offset | |
10322 | + stub_entry->stub_sec->output_section->vma); | |
10323 | addend = 0; | |
10324 | } | |
10325 | ||
10326 | if (insn != 0) | |
10327 | { | |
10328 | if (is_power4) | |
721956f4 | 10329 | { |
b25116a9 AM |
10330 | /* Set 'a' bit. This is 0b00010 in BO field for branch |
10331 | on CR(BI) insns (BO == 001at or 011at), and 0b01000 | |
10332 | for branch on CTR insns (BO == 1a00t or 1a01t). */ | |
10333 | if ((insn & (0x14 << 21)) == (0x04 << 21)) | |
10334 | insn |= 0x02 << 21; | |
10335 | else if ((insn & (0x14 << 21)) == (0x10 << 21)) | |
10336 | insn |= 0x08 << 21; | |
10337 | else | |
10338 | break; | |
10339 | } | |
10340 | else | |
10341 | { | |
10342 | /* Invert 'y' bit if not the default. */ | |
4cc603a5 | 10343 | if ((bfd_signed_vma) (relocation + addend - from) < 0) |
b25116a9 | 10344 | insn ^= 0x01 << 21; |
721956f4 | 10345 | } |
b25116a9 AM |
10346 | |
10347 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset); | |
5bd4f169 | 10348 | } |
e86ce104 | 10349 | |
06da1e8e AM |
10350 | /* NOP out calls to undefined weak functions. |
10351 | We can thus call a weak function without first | |
10352 | checking whether the function is defined. */ | |
b25116a9 | 10353 | else if (h != NULL |
039b3fef | 10354 | && h->elf.root.type == bfd_link_hash_undefweak |
b25116a9 AM |
10355 | && r_type == R_PPC64_REL24 |
10356 | && relocation == 0 | |
4cc603a5 | 10357 | && addend == 0) |
e86ce104 | 10358 | { |
06da1e8e AM |
10359 | bfd_put_32 (output_bfd, NOP, contents + rel->r_offset); |
10360 | continue; | |
e86ce104 | 10361 | } |
65f38f15 AM |
10362 | break; |
10363 | } | |
5bd4f169 | 10364 | |
65f38f15 | 10365 | /* Set `addend'. */ |
411e1bfb | 10366 | tls_type = 0; |
65f38f15 AM |
10367 | switch (r_type) |
10368 | { | |
10369 | default: | |
10370 | (*_bfd_error_handler) | |
d003868e AM |
10371 | (_("%B: unknown relocation type %d for symbol %s"), |
10372 | input_bfd, (int) r_type, sym_name); | |
5bd4f169 | 10373 | |
65f38f15 | 10374 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 10375 | ret = FALSE; |
65f38f15 | 10376 | continue; |
5bd4f169 | 10377 | |
65f38f15 | 10378 | case R_PPC64_NONE: |
411e1bfb | 10379 | case R_PPC64_TLS: |
04c9666a AM |
10380 | case R_PPC64_GNU_VTINHERIT: |
10381 | case R_PPC64_GNU_VTENTRY: | |
65f38f15 | 10382 | continue; |
5bd4f169 AM |
10383 | |
10384 | /* GOT16 relocations. Like an ADDR16 using the symbol's | |
10385 | address in the GOT as relocation value instead of the | |
411e1bfb | 10386 | symbol's value itself. Also, create a GOT entry for the |
5bd4f169 | 10387 | symbol and put the symbol value there. */ |
411e1bfb AM |
10388 | case R_PPC64_GOT_TLSGD16: |
10389 | case R_PPC64_GOT_TLSGD16_LO: | |
10390 | case R_PPC64_GOT_TLSGD16_HI: | |
10391 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b | 10392 | tls_type = TLS_TLS | TLS_GD; |
411e1bfb AM |
10393 | goto dogot; |
10394 | ||
10395 | case R_PPC64_GOT_TLSLD16: | |
10396 | case R_PPC64_GOT_TLSLD16_LO: | |
10397 | case R_PPC64_GOT_TLSLD16_HI: | |
10398 | case R_PPC64_GOT_TLSLD16_HA: | |
951fd09b | 10399 | tls_type = TLS_TLS | TLS_LD; |
411e1bfb AM |
10400 | goto dogot; |
10401 | ||
10402 | case R_PPC64_GOT_TPREL16_DS: | |
10403 | case R_PPC64_GOT_TPREL16_LO_DS: | |
10404 | case R_PPC64_GOT_TPREL16_HI: | |
10405 | case R_PPC64_GOT_TPREL16_HA: | |
10406 | tls_type = TLS_TLS | TLS_TPREL; | |
10407 | goto dogot; | |
10408 | ||
10409 | case R_PPC64_GOT_DTPREL16_DS: | |
10410 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
10411 | case R_PPC64_GOT_DTPREL16_HI: | |
10412 | case R_PPC64_GOT_DTPREL16_HA: | |
10413 | tls_type = TLS_TLS | TLS_DTPREL; | |
10414 | goto dogot; | |
10415 | ||
65f38f15 AM |
10416 | case R_PPC64_GOT16: |
10417 | case R_PPC64_GOT16_LO: | |
10418 | case R_PPC64_GOT16_HI: | |
10419 | case R_PPC64_GOT16_HA: | |
10420 | case R_PPC64_GOT16_DS: | |
10421 | case R_PPC64_GOT16_LO_DS: | |
411e1bfb | 10422 | dogot: |
5bd4f169 AM |
10423 | { |
10424 | /* Relocation is to the entry for this symbol in the global | |
10425 | offset table. */ | |
e717da7e | 10426 | asection *got; |
d881513a | 10427 | bfd_vma *offp; |
5bd4f169 | 10428 | bfd_vma off; |
d881513a | 10429 | unsigned long indx = 0; |
65f38f15 | 10430 | |
d881513a AM |
10431 | if (tls_type == (TLS_TLS | TLS_LD) |
10432 | && (h == NULL | |
f5385ebf | 10433 | || !h->elf.def_dynamic)) |
e717da7e | 10434 | offp = &ppc64_tlsld_got (input_bfd)->offset; |
411e1bfb | 10435 | else |
5bd4f169 | 10436 | { |
d881513a | 10437 | struct got_entry *ent; |
5bd4f169 | 10438 | |
d881513a AM |
10439 | if (h != NULL) |
10440 | { | |
10441 | bfd_boolean dyn = htab->elf.dynamic_sections_created; | |
039b3fef AM |
10442 | if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, |
10443 | &h->elf) | |
d881513a | 10444 | || (info->shared |
039b3fef | 10445 | && SYMBOL_REFERENCES_LOCAL (info, &h->elf))) |
d881513a AM |
10446 | /* This is actually a static link, or it is a |
10447 | -Bsymbolic link and the symbol is defined | |
10448 | locally, or the symbol was forced to be local | |
10449 | because of a version file. */ | |
10450 | ; | |
10451 | else | |
10452 | { | |
039b3fef | 10453 | indx = h->elf.dynindx; |
d881513a AM |
10454 | unresolved_reloc = FALSE; |
10455 | } | |
039b3fef | 10456 | ent = h->elf.got.glist; |
d881513a | 10457 | } |
411e1bfb | 10458 | else |
5bd4f169 | 10459 | { |
d881513a AM |
10460 | if (local_got_ents == NULL) |
10461 | abort (); | |
10462 | ent = local_got_ents[r_symndx]; | |
5bd4f169 | 10463 | } |
d881513a AM |
10464 | |
10465 | for (; ent != NULL; ent = ent->next) | |
4cc603a5 | 10466 | if (ent->addend == orig_addend |
e717da7e | 10467 | && ent->owner == input_bfd |
d881513a AM |
10468 | && ent->tls_type == tls_type) |
10469 | break; | |
10470 | if (ent == NULL) | |
10471 | abort (); | |
10472 | offp = &ent->got.offset; | |
5bd4f169 | 10473 | } |
411e1bfb | 10474 | |
e717da7e AM |
10475 | got = ppc64_elf_tdata (input_bfd)->got; |
10476 | if (got == NULL) | |
10477 | abort (); | |
10478 | ||
411e1bfb AM |
10479 | /* The offset must always be a multiple of 8. We use the |
10480 | least significant bit to record whether we have already | |
10481 | processed this entry. */ | |
d881513a | 10482 | off = *offp; |
411e1bfb AM |
10483 | if ((off & 1) != 0) |
10484 | off &= ~1; | |
5bd4f169 AM |
10485 | else |
10486 | { | |
411e1bfb AM |
10487 | /* Generate relocs for the dynamic linker, except in |
10488 | the case of TLSLD where we'll use one entry per | |
10489 | module. */ | |
e717da7e AM |
10490 | asection *relgot = ppc64_elf_tdata (input_bfd)->relgot; |
10491 | ||
d881513a | 10492 | *offp = off | 1; |
4e795f50 AM |
10493 | if ((info->shared || indx != 0) |
10494 | && (h == NULL | |
039b3fef AM |
10495 | || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT |
10496 | || h->elf.root.type != bfd_link_hash_undefweak)) | |
5bd4f169 | 10497 | { |
e717da7e AM |
10498 | outrel.r_offset = (got->output_section->vma |
10499 | + got->output_offset | |
411e1bfb | 10500 | + off); |
4cc603a5 | 10501 | outrel.r_addend = addend; |
d881513a | 10502 | if (tls_type & (TLS_LD | TLS_GD)) |
5bd4f169 | 10503 | { |
411e1bfb | 10504 | outrel.r_addend = 0; |
e515b051 | 10505 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPMOD64); |
d881513a AM |
10506 | if (tls_type == (TLS_TLS | TLS_GD)) |
10507 | { | |
e717da7e AM |
10508 | loc = relgot->contents; |
10509 | loc += (relgot->reloc_count++ | |
d881513a AM |
10510 | * sizeof (Elf64_External_Rela)); |
10511 | bfd_elf64_swap_reloca_out (output_bfd, | |
10512 | &outrel, loc); | |
e515b051 | 10513 | outrel.r_offset += 8; |
4cc603a5 | 10514 | outrel.r_addend = addend; |
d881513a AM |
10515 | outrel.r_info |
10516 | = ELF64_R_INFO (indx, R_PPC64_DTPREL64); | |
d881513a | 10517 | } |
411e1bfb | 10518 | } |
951fd09b | 10519 | else if (tls_type == (TLS_TLS | TLS_DTPREL)) |
411e1bfb | 10520 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64); |
951fd09b | 10521 | else if (tls_type == (TLS_TLS | TLS_TPREL)) |
411e1bfb AM |
10522 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_TPREL64); |
10523 | else if (indx == 0) | |
81407a69 AM |
10524 | { |
10525 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_RELATIVE); | |
10526 | ||
10527 | /* Write the .got section contents for the sake | |
10528 | of prelink. */ | |
e717da7e | 10529 | loc = got->contents + off; |
23fbd6fa JJ |
10530 | bfd_put_64 (output_bfd, outrel.r_addend + relocation, |
10531 | loc); | |
81407a69 | 10532 | } |
411e1bfb AM |
10533 | else |
10534 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT); | |
81407a69 AM |
10535 | |
10536 | if (indx == 0 && tls_type != (TLS_TLS | TLS_LD)) | |
e515b051 AM |
10537 | { |
10538 | outrel.r_addend += relocation; | |
10539 | if (tls_type & (TLS_GD | TLS_DTPREL | TLS_TPREL)) | |
e1918d23 | 10540 | outrel.r_addend -= htab->elf.tls_sec->vma; |
e515b051 | 10541 | } |
e717da7e AM |
10542 | loc = relgot->contents; |
10543 | loc += (relgot->reloc_count++ | |
411e1bfb AM |
10544 | * sizeof (Elf64_External_Rela)); |
10545 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); | |
10546 | } | |
10547 | ||
ad8e1ba5 | 10548 | /* Init the .got section contents here if we're not |
81407a69 | 10549 | emitting a reloc. */ |
d881513a | 10550 | else |
411e1bfb | 10551 | { |
4cc603a5 | 10552 | relocation += addend; |
7b609f53 AM |
10553 | if (tls_type == (TLS_TLS | TLS_LD)) |
10554 | relocation = 1; | |
10555 | else if (tls_type != 0) | |
411e1bfb | 10556 | { |
e1918d23 | 10557 | relocation -= htab->elf.tls_sec->vma + DTP_OFFSET; |
7b609f53 | 10558 | if (tls_type == (TLS_TLS | TLS_TPREL)) |
411e1bfb | 10559 | relocation += DTP_OFFSET - TP_OFFSET; |
5bd4f169 | 10560 | |
7b609f53 AM |
10561 | if (tls_type == (TLS_TLS | TLS_GD)) |
10562 | { | |
10563 | bfd_put_64 (output_bfd, relocation, | |
e717da7e | 10564 | got->contents + off + 8); |
7b609f53 AM |
10565 | relocation = 1; |
10566 | } | |
411e1bfb | 10567 | } |
7b609f53 | 10568 | |
411e1bfb | 10569 | bfd_put_64 (output_bfd, relocation, |
e717da7e | 10570 | got->contents + off); |
5bd4f169 AM |
10571 | } |
10572 | } | |
10573 | ||
65f38f15 AM |
10574 | if (off >= (bfd_vma) -2) |
10575 | abort (); | |
10576 | ||
e717da7e | 10577 | relocation = got->output_offset + off; |
65f38f15 | 10578 | |
5bd4f169 | 10579 | /* TOC base (r2) is TOC start plus 0x8000. */ |
e717da7e | 10580 | addend = -TOC_BASE_OFF; |
5bd4f169 | 10581 | } |
65f38f15 AM |
10582 | break; |
10583 | ||
10584 | case R_PPC64_PLT16_HA: | |
10585 | case R_PPC64_PLT16_HI: | |
10586 | case R_PPC64_PLT16_LO: | |
10587 | case R_PPC64_PLT32: | |
10588 | case R_PPC64_PLT64: | |
10589 | /* Relocation is to the entry for this symbol in the | |
10590 | procedure linkage table. */ | |
10591 | ||
10592 | /* Resolve a PLT reloc against a local symbol directly, | |
10593 | without using the procedure linkage table. */ | |
10594 | if (h == NULL) | |
10595 | break; | |
10596 | ||
411e1bfb AM |
10597 | /* It's possible that we didn't make a PLT entry for this |
10598 | symbol. This happens when statically linking PIC code, | |
10599 | or when using -Bsymbolic. Go find a match if there is a | |
10600 | PLT entry. */ | |
4ce794b7 | 10601 | if (htab->plt != NULL) |
65f38f15 | 10602 | { |
411e1bfb | 10603 | struct plt_entry *ent; |
039b3fef | 10604 | for (ent = h->elf.plt.plist; ent != NULL; ent = ent->next) |
4cc603a5 | 10605 | if (ent->addend == orig_addend |
411e1bfb AM |
10606 | && ent->plt.offset != (bfd_vma) -1) |
10607 | { | |
4ce794b7 AM |
10608 | relocation = (htab->plt->output_section->vma |
10609 | + htab->plt->output_offset | |
411e1bfb AM |
10610 | + ent->plt.offset); |
10611 | unresolved_reloc = FALSE; | |
10612 | } | |
65f38f15 | 10613 | } |
65f38f15 | 10614 | break; |
5bd4f169 | 10615 | |
0b13192e AM |
10616 | case R_PPC64_TOC: |
10617 | /* Relocation value is TOC base. */ | |
10618 | relocation = TOCstart; | |
10619 | if (r_symndx == 0) | |
10620 | relocation += htab->stub_group[input_section->id].toc_off; | |
8517fae7 AM |
10621 | else if (unresolved_reloc) |
10622 | ; | |
10623 | else if (sec != NULL && sec->id <= htab->top_id) | |
0b13192e AM |
10624 | relocation += htab->stub_group[sec->id].toc_off; |
10625 | else | |
10626 | unresolved_reloc = TRUE; | |
10627 | goto dodyn2; | |
10628 | ||
5bd4f169 AM |
10629 | /* TOC16 relocs. We want the offset relative to the TOC base, |
10630 | which is the address of the start of the TOC plus 0x8000. | |
10631 | The TOC consists of sections .got, .toc, .tocbss, and .plt, | |
10632 | in this order. */ | |
65f38f15 AM |
10633 | case R_PPC64_TOC16: |
10634 | case R_PPC64_TOC16_LO: | |
10635 | case R_PPC64_TOC16_HI: | |
10636 | case R_PPC64_TOC16_DS: | |
10637 | case R_PPC64_TOC16_LO_DS: | |
10638 | case R_PPC64_TOC16_HA: | |
ad8e1ba5 | 10639 | addend -= TOCstart + htab->stub_group[input_section->id].toc_off; |
5bd4f169 AM |
10640 | break; |
10641 | ||
10642 | /* Relocate against the beginning of the section. */ | |
65f38f15 AM |
10643 | case R_PPC64_SECTOFF: |
10644 | case R_PPC64_SECTOFF_LO: | |
10645 | case R_PPC64_SECTOFF_HI: | |
10646 | case R_PPC64_SECTOFF_DS: | |
10647 | case R_PPC64_SECTOFF_LO_DS: | |
10648 | case R_PPC64_SECTOFF_HA: | |
4ce794b7 | 10649 | if (sec != NULL) |
65f38f15 | 10650 | addend -= sec->output_section->vma; |
5bd4f169 AM |
10651 | break; |
10652 | ||
721956f4 AM |
10653 | case R_PPC64_REL14: |
10654 | case R_PPC64_REL14_BRNTAKEN: | |
10655 | case R_PPC64_REL14_BRTAKEN: | |
5d1634d7 AM |
10656 | case R_PPC64_REL24: |
10657 | break; | |
10658 | ||
411e1bfb AM |
10659 | case R_PPC64_TPREL16: |
10660 | case R_PPC64_TPREL16_LO: | |
10661 | case R_PPC64_TPREL16_HI: | |
10662 | case R_PPC64_TPREL16_HA: | |
10663 | case R_PPC64_TPREL16_DS: | |
10664 | case R_PPC64_TPREL16_LO_DS: | |
10665 | case R_PPC64_TPREL16_HIGHER: | |
10666 | case R_PPC64_TPREL16_HIGHERA: | |
10667 | case R_PPC64_TPREL16_HIGHEST: | |
10668 | case R_PPC64_TPREL16_HIGHESTA: | |
e1918d23 | 10669 | addend -= htab->elf.tls_sec->vma + TP_OFFSET; |
411e1bfb AM |
10670 | if (info->shared) |
10671 | /* The TPREL16 relocs shouldn't really be used in shared | |
10672 | libs as they will result in DT_TEXTREL being set, but | |
10673 | support them anyway. */ | |
10674 | goto dodyn; | |
10675 | break; | |
10676 | ||
10677 | case R_PPC64_DTPREL16: | |
10678 | case R_PPC64_DTPREL16_LO: | |
10679 | case R_PPC64_DTPREL16_HI: | |
10680 | case R_PPC64_DTPREL16_HA: | |
10681 | case R_PPC64_DTPREL16_DS: | |
10682 | case R_PPC64_DTPREL16_LO_DS: | |
10683 | case R_PPC64_DTPREL16_HIGHER: | |
10684 | case R_PPC64_DTPREL16_HIGHERA: | |
10685 | case R_PPC64_DTPREL16_HIGHEST: | |
10686 | case R_PPC64_DTPREL16_HIGHESTA: | |
e1918d23 | 10687 | addend -= htab->elf.tls_sec->vma + DTP_OFFSET; |
411e1bfb AM |
10688 | break; |
10689 | ||
e515b051 AM |
10690 | case R_PPC64_DTPMOD64: |
10691 | relocation = 1; | |
10692 | addend = 0; | |
10693 | goto dodyn; | |
10694 | ||
411e1bfb | 10695 | case R_PPC64_TPREL64: |
e1918d23 | 10696 | addend -= htab->elf.tls_sec->vma + TP_OFFSET; |
411e1bfb AM |
10697 | goto dodyn; |
10698 | ||
10699 | case R_PPC64_DTPREL64: | |
e1918d23 | 10700 | addend -= htab->elf.tls_sec->vma + DTP_OFFSET; |
411e1bfb AM |
10701 | /* Fall thru */ |
10702 | ||
65f38f15 AM |
10703 | /* Relocations that may need to be propagated if this is a |
10704 | dynamic object. */ | |
04c9666a | 10705 | case R_PPC64_REL30: |
65f38f15 AM |
10706 | case R_PPC64_REL32: |
10707 | case R_PPC64_REL64: | |
10708 | case R_PPC64_ADDR14: | |
10709 | case R_PPC64_ADDR14_BRNTAKEN: | |
10710 | case R_PPC64_ADDR14_BRTAKEN: | |
10711 | case R_PPC64_ADDR16: | |
10712 | case R_PPC64_ADDR16_DS: | |
10713 | case R_PPC64_ADDR16_HA: | |
10714 | case R_PPC64_ADDR16_HI: | |
10715 | case R_PPC64_ADDR16_HIGHER: | |
10716 | case R_PPC64_ADDR16_HIGHERA: | |
10717 | case R_PPC64_ADDR16_HIGHEST: | |
10718 | case R_PPC64_ADDR16_HIGHESTA: | |
10719 | case R_PPC64_ADDR16_LO: | |
10720 | case R_PPC64_ADDR16_LO_DS: | |
10721 | case R_PPC64_ADDR24: | |
65f38f15 AM |
10722 | case R_PPC64_ADDR32: |
10723 | case R_PPC64_ADDR64: | |
10724 | case R_PPC64_UADDR16: | |
10725 | case R_PPC64_UADDR32: | |
10726 | case R_PPC64_UADDR64: | |
ec338859 AM |
10727 | /* r_symndx will be zero only for relocs against symbols |
10728 | from removed linkonce sections, or sections discarded by | |
10729 | a linker script. */ | |
411e1bfb | 10730 | dodyn: |
5d1634d7 AM |
10731 | if (r_symndx == 0) |
10732 | break; | |
10733 | /* Fall thru. */ | |
10734 | ||
0b13192e | 10735 | dodyn2: |
5d1634d7 | 10736 | if ((input_section->flags & SEC_ALLOC) == 0) |
ec338859 AM |
10737 | break; |
10738 | ||
41bd81ab AM |
10739 | if (NO_OPD_RELOCS && is_opd) |
10740 | break; | |
10741 | ||
65f38f15 | 10742 | if ((info->shared |
4e795f50 | 10743 | && (h == NULL |
039b3fef AM |
10744 | || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT |
10745 | || h->elf.root.type != bfd_link_hash_undefweak) | |
411e1bfb | 10746 | && (MUST_BE_DYN_RELOC (r_type) |
039b3fef | 10747 | || !SYMBOL_CALLS_LOCAL (info, &h->elf))) |
f4656909 AM |
10748 | || (ELIMINATE_COPY_RELOCS |
10749 | && !info->shared | |
65f38f15 | 10750 | && h != NULL |
039b3fef | 10751 | && h->elf.dynindx != -1 |
f5385ebf AM |
10752 | && !h->elf.non_got_ref |
10753 | && h->elf.def_dynamic | |
10754 | && !h->elf.def_regular)) | |
65f38f15 AM |
10755 | { |
10756 | Elf_Internal_Rela outrel; | |
b34976b6 | 10757 | bfd_boolean skip, relocate; |
65f38f15 | 10758 | asection *sreloc; |
947216bf | 10759 | bfd_byte *loc; |
1cf1f670 | 10760 | bfd_vma out_off; |
65f38f15 AM |
10761 | |
10762 | /* When generating a dynamic object, these relocations | |
10763 | are copied into the output file to be resolved at run | |
10764 | time. */ | |
10765 | ||
b34976b6 AM |
10766 | skip = FALSE; |
10767 | relocate = FALSE; | |
65f38f15 | 10768 | |
1cf1f670 AM |
10769 | out_off = _bfd_elf_section_offset (output_bfd, info, |
10770 | input_section, rel->r_offset); | |
10771 | if (out_off == (bfd_vma) -1) | |
b34976b6 | 10772 | skip = TRUE; |
1cf1f670 | 10773 | else if (out_off == (bfd_vma) -2) |
b34976b6 | 10774 | skip = TRUE, relocate = TRUE; |
1cf1f670 AM |
10775 | out_off += (input_section->output_section->vma |
10776 | + input_section->output_offset); | |
10777 | outrel.r_offset = out_off; | |
411e1bfb | 10778 | outrel.r_addend = rel->r_addend; |
65f38f15 | 10779 | |
1cf1f670 AM |
10780 | /* Optimize unaligned reloc use. */ |
10781 | if ((r_type == R_PPC64_ADDR64 && (out_off & 7) != 0) | |
10782 | || (r_type == R_PPC64_UADDR64 && (out_off & 7) == 0)) | |
10783 | r_type ^= R_PPC64_ADDR64 ^ R_PPC64_UADDR64; | |
10784 | else if ((r_type == R_PPC64_ADDR32 && (out_off & 3) != 0) | |
10785 | || (r_type == R_PPC64_UADDR32 && (out_off & 3) == 0)) | |
10786 | r_type ^= R_PPC64_ADDR32 ^ R_PPC64_UADDR32; | |
10787 | else if ((r_type == R_PPC64_ADDR16 && (out_off & 1) != 0) | |
10788 | || (r_type == R_PPC64_UADDR16 && (out_off & 1) == 0)) | |
10789 | r_type ^= R_PPC64_ADDR16 ^ R_PPC64_UADDR16; | |
10790 | ||
65f38f15 | 10791 | if (skip) |
0bb2d96a | 10792 | memset (&outrel, 0, sizeof outrel); |
039b3fef | 10793 | else if (!SYMBOL_REFERENCES_LOCAL (info, &h->elf) |
0b13192e AM |
10794 | && !is_opd |
10795 | && r_type != R_PPC64_TOC) | |
039b3fef | 10796 | outrel.r_info = ELF64_R_INFO (h->elf.dynindx, r_type); |
65f38f15 AM |
10797 | else |
10798 | { | |
41bd81ab AM |
10799 | /* This symbol is local, or marked to become local, |
10800 | or this is an opd section reloc which must point | |
10801 | at a local function. */ | |
65f38f15 | 10802 | outrel.r_addend += relocation; |
e86ce104 | 10803 | if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC) |
65f38f15 | 10804 | { |
3fad3c7c | 10805 | if (is_opd && h != NULL) |
afbe61cf AM |
10806 | { |
10807 | /* Lie about opd entries. This case occurs | |
10808 | when building shared libraries and we | |
10809 | reference a function in another shared | |
3fad3c7c AM |
10810 | lib. The same thing happens for a weak |
10811 | definition in an application that's | |
10812 | overridden by a strong definition in a | |
10813 | shared lib. (I believe this is a generic | |
10814 | bug in binutils handling of weak syms.) | |
10815 | In these cases we won't use the opd | |
1e2f5b6e | 10816 | entry in this lib. */ |
b34976b6 | 10817 | unresolved_reloc = FALSE; |
afbe61cf | 10818 | } |
65f38f15 | 10819 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); |
81407a69 AM |
10820 | |
10821 | /* We need to relocate .opd contents for ld.so. | |
10822 | Prelink also wants simple and consistent rules | |
10823 | for relocs. This make all RELATIVE relocs have | |
10824 | *r_offset equal to r_addend. */ | |
10825 | relocate = TRUE; | |
65f38f15 AM |
10826 | } |
10827 | else | |
10828 | { | |
10829 | long indx = 0; | |
10830 | ||
41bd81ab | 10831 | if (bfd_is_abs_section (sec)) |
65f38f15 AM |
10832 | ; |
10833 | else if (sec == NULL || sec->owner == NULL) | |
10834 | { | |
10835 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 10836 | return FALSE; |
65f38f15 AM |
10837 | } |
10838 | else | |
10839 | { | |
10840 | asection *osec; | |
10841 | ||
10842 | osec = sec->output_section; | |
10843 | indx = elf_section_data (osec)->dynindx; | |
10844 | ||
10845 | /* We are turning this relocation into one | |
10846 | against a section symbol, so subtract out | |
10847 | the output section's address but not the | |
10848 | offset of the input section in the output | |
10849 | section. */ | |
10850 | outrel.r_addend -= osec->vma; | |
10851 | } | |
10852 | ||
10853 | outrel.r_info = ELF64_R_INFO (indx, r_type); | |
10854 | } | |
10855 | } | |
10856 | ||
10857 | sreloc = elf_section_data (input_section)->sreloc; | |
10858 | if (sreloc == NULL) | |
10859 | abort (); | |
10860 | ||
dfbb6ac9 AM |
10861 | if (sreloc->reloc_count * sizeof (Elf64_External_Rela) |
10862 | >= sreloc->size) | |
10863 | abort (); | |
947216bf AM |
10864 | loc = sreloc->contents; |
10865 | loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela); | |
65f38f15 AM |
10866 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); |
10867 | ||
10868 | /* If this reloc is against an external symbol, it will | |
10869 | be computed at runtime, so there's no need to do | |
81407a69 AM |
10870 | anything now. However, for the sake of prelink ensure |
10871 | that the section contents are a known value. */ | |
65f38f15 | 10872 | if (! relocate) |
81407a69 AM |
10873 | { |
10874 | unresolved_reloc = FALSE; | |
10875 | /* The value chosen here is quite arbitrary as ld.so | |
10876 | ignores section contents except for the special | |
10877 | case of .opd where the contents might be accessed | |
10878 | before relocation. Choose zero, as that won't | |
10879 | cause reloc overflow. */ | |
10880 | relocation = 0; | |
10881 | addend = 0; | |
10882 | /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs | |
10883 | to improve backward compatibility with older | |
10884 | versions of ld. */ | |
10885 | if (r_type == R_PPC64_ADDR64) | |
10886 | addend = outrel.r_addend; | |
10887 | /* Adjust pc_relative relocs to have zero in *r_offset. */ | |
4ce794b7 | 10888 | else if (ppc64_elf_howto_table[r_type]->pc_relative) |
000732f7 AM |
10889 | addend = (input_section->output_section->vma |
10890 | + input_section->output_offset | |
10891 | + rel->r_offset); | |
81407a69 | 10892 | } |
65f38f15 | 10893 | } |
5bd4f169 AM |
10894 | break; |
10895 | ||
65f38f15 AM |
10896 | case R_PPC64_COPY: |
10897 | case R_PPC64_GLOB_DAT: | |
10898 | case R_PPC64_JMP_SLOT: | |
10899 | case R_PPC64_RELATIVE: | |
10900 | /* We shouldn't ever see these dynamic relocs in relocatable | |
10901 | files. */ | |
ae9a127f | 10902 | /* Fall through. */ |
65f38f15 AM |
10903 | |
10904 | case R_PPC64_PLTGOT16: | |
10905 | case R_PPC64_PLTGOT16_DS: | |
10906 | case R_PPC64_PLTGOT16_HA: | |
10907 | case R_PPC64_PLTGOT16_HI: | |
10908 | case R_PPC64_PLTGOT16_LO: | |
10909 | case R_PPC64_PLTGOT16_LO_DS: | |
10910 | case R_PPC64_PLTREL32: | |
10911 | case R_PPC64_PLTREL64: | |
10912 | /* These ones haven't been implemented yet. */ | |
10913 | ||
10914 | (*_bfd_error_handler) | |
d003868e AM |
10915 | (_("%B: relocation %s is not supported for symbol %s."), |
10916 | input_bfd, | |
4ce794b7 | 10917 | ppc64_elf_howto_table[r_type]->name, sym_name); |
5bd4f169 AM |
10918 | |
10919 | bfd_set_error (bfd_error_invalid_operation); | |
b34976b6 | 10920 | ret = FALSE; |
5bd4f169 | 10921 | continue; |
65f38f15 | 10922 | } |
5bd4f169 | 10923 | |
65f38f15 AM |
10924 | /* Do any further special processing. */ |
10925 | switch (r_type) | |
10926 | { | |
10927 | default: | |
10928 | break; | |
10929 | ||
10930 | case R_PPC64_ADDR16_HA: | |
10931 | case R_PPC64_ADDR16_HIGHERA: | |
10932 | case R_PPC64_ADDR16_HIGHESTA: | |
86bbe32f AM |
10933 | case R_PPC64_GOT16_HA: |
10934 | case R_PPC64_PLTGOT16_HA: | |
65f38f15 AM |
10935 | case R_PPC64_PLT16_HA: |
10936 | case R_PPC64_TOC16_HA: | |
10937 | case R_PPC64_SECTOFF_HA: | |
411e1bfb AM |
10938 | case R_PPC64_TPREL16_HA: |
10939 | case R_PPC64_DTPREL16_HA: | |
10940 | case R_PPC64_GOT_TLSGD16_HA: | |
10941 | case R_PPC64_GOT_TLSLD16_HA: | |
10942 | case R_PPC64_GOT_TPREL16_HA: | |
10943 | case R_PPC64_GOT_DTPREL16_HA: | |
10944 | case R_PPC64_TPREL16_HIGHER: | |
10945 | case R_PPC64_TPREL16_HIGHERA: | |
10946 | case R_PPC64_TPREL16_HIGHEST: | |
10947 | case R_PPC64_TPREL16_HIGHESTA: | |
10948 | case R_PPC64_DTPREL16_HIGHER: | |
10949 | case R_PPC64_DTPREL16_HIGHERA: | |
10950 | case R_PPC64_DTPREL16_HIGHEST: | |
10951 | case R_PPC64_DTPREL16_HIGHESTA: | |
65f38f15 AM |
10952 | /* It's just possible that this symbol is a weak symbol |
10953 | that's not actually defined anywhere. In that case, | |
10954 | 'sec' would be NULL, and we should leave the symbol | |
10955 | alone (it will be set to zero elsewhere in the link). */ | |
10956 | if (sec != NULL) | |
e515b051 AM |
10957 | /* Add 0x10000 if sign bit in 0:15 is set. |
10958 | Bits 0:15 are not used. */ | |
10959 | addend += 0x8000; | |
65f38f15 AM |
10960 | break; |
10961 | ||
10962 | case R_PPC64_ADDR16_DS: | |
10963 | case R_PPC64_ADDR16_LO_DS: | |
10964 | case R_PPC64_GOT16_DS: | |
10965 | case R_PPC64_GOT16_LO_DS: | |
10966 | case R_PPC64_PLT16_LO_DS: | |
10967 | case R_PPC64_SECTOFF_DS: | |
10968 | case R_PPC64_SECTOFF_LO_DS: | |
10969 | case R_PPC64_TOC16_DS: | |
10970 | case R_PPC64_TOC16_LO_DS: | |
10971 | case R_PPC64_PLTGOT16_DS: | |
10972 | case R_PPC64_PLTGOT16_LO_DS: | |
411e1bfb AM |
10973 | case R_PPC64_GOT_TPREL16_DS: |
10974 | case R_PPC64_GOT_TPREL16_LO_DS: | |
10975 | case R_PPC64_GOT_DTPREL16_DS: | |
10976 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
10977 | case R_PPC64_TPREL16_DS: | |
10978 | case R_PPC64_TPREL16_LO_DS: | |
10979 | case R_PPC64_DTPREL16_DS: | |
10980 | case R_PPC64_DTPREL16_LO_DS: | |
adadcc0c AM |
10981 | insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3)); |
10982 | mask = 3; | |
10983 | /* If this reloc is against an lq insn, then the value must be | |
10984 | a multiple of 16. This is somewhat of a hack, but the | |
10985 | "correct" way to do this by defining _DQ forms of all the | |
10986 | _DS relocs bloats all reloc switches in this file. It | |
10987 | doesn't seem to make much sense to use any of these relocs | |
10988 | in data, so testing the insn should be safe. */ | |
494dac0c | 10989 | if ((insn & (0x3f << 26)) == (56u << 26)) |
adadcc0c AM |
10990 | mask = 15; |
10991 | if (((relocation + addend) & mask) != 0) | |
65f38f15 AM |
10992 | { |
10993 | (*_bfd_error_handler) | |
d003868e AM |
10994 | (_("%B: error: relocation %s not a multiple of %d"), |
10995 | input_bfd, | |
4ce794b7 | 10996 | ppc64_elf_howto_table[r_type]->name, |
adadcc0c | 10997 | mask + 1); |
65f38f15 | 10998 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 10999 | ret = FALSE; |
65f38f15 AM |
11000 | continue; |
11001 | } | |
11002 | break; | |
5bd4f169 AM |
11003 | } |
11004 | ||
239e1f3a AM |
11005 | /* Dynamic relocs are not propagated for SEC_DEBUGGING sections |
11006 | because such sections are not SEC_ALLOC and thus ld.so will | |
11007 | not process them. */ | |
65f38f15 | 11008 | if (unresolved_reloc |
239e1f3a | 11009 | && !((input_section->flags & SEC_DEBUGGING) != 0 |
f5385ebf | 11010 | && h->elf.def_dynamic)) |
9c07fe7c AM |
11011 | { |
11012 | (*_bfd_error_handler) | |
d003868e AM |
11013 | (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"), |
11014 | input_bfd, | |
11015 | input_section, | |
9c07fe7c | 11016 | (long) rel->r_offset, |
7b609f53 | 11017 | ppc64_elf_howto_table[(int) r_type]->name, |
039b3fef | 11018 | h->elf.root.root.string); |
b34976b6 | 11019 | ret = FALSE; |
9c07fe7c | 11020 | } |
5bd4f169 | 11021 | |
65f38f15 | 11022 | r = _bfd_final_link_relocate (ppc64_elf_howto_table[(int) r_type], |
5bd4f169 AM |
11023 | input_bfd, |
11024 | input_section, | |
11025 | contents, | |
411e1bfb | 11026 | rel->r_offset, |
5bd4f169 AM |
11027 | relocation, |
11028 | addend); | |
11029 | ||
ef60b7ff | 11030 | if (r != bfd_reloc_ok) |
5bd4f169 | 11031 | { |
cd27b276 AM |
11032 | if (sym_name == NULL) |
11033 | sym_name = "(null)"; | |
11034 | if (r == bfd_reloc_overflow) | |
5bd4f169 | 11035 | { |
cd27b276 AM |
11036 | if (warned) |
11037 | continue; | |
11038 | if (h != NULL | |
039b3fef | 11039 | && h->elf.root.type == bfd_link_hash_undefweak |
4ce794b7 | 11040 | && ppc64_elf_howto_table[r_type]->pc_relative) |
5bd4f169 AM |
11041 | { |
11042 | /* Assume this is a call protected by other code that | |
11043 | detects the symbol is undefined. If this is the case, | |
11044 | we can safely ignore the overflow. If not, the | |
11045 | program is hosed anyway, and a little warning isn't | |
11046 | going to help. */ | |
11047 | ||
11048 | continue; | |
11049 | } | |
11050 | ||
ef60b7ff | 11051 | if (!((*info->callbacks->reloc_overflow) |
dfeffb9f L |
11052 | (info, (h ? &h->elf.root : NULL), sym_name, |
11053 | ppc64_elf_howto_table[r_type]->name, | |
4cc603a5 | 11054 | orig_addend, input_bfd, input_section, rel->r_offset))) |
b34976b6 | 11055 | return FALSE; |
ef60b7ff AM |
11056 | } |
11057 | else | |
11058 | { | |
11059 | (*_bfd_error_handler) | |
d003868e AM |
11060 | (_("%B(%A+0x%lx): %s reloc against `%s': error %d"), |
11061 | input_bfd, | |
11062 | input_section, | |
7b609f53 | 11063 | (long) rel->r_offset, |
4ce794b7 | 11064 | ppc64_elf_howto_table[r_type]->name, |
7b609f53 AM |
11065 | sym_name, |
11066 | (int) r); | |
b34976b6 | 11067 | ret = FALSE; |
ef60b7ff | 11068 | } |
5bd4f169 | 11069 | } |
5bd4f169 AM |
11070 | } |
11071 | ||
645ea6a9 AM |
11072 | /* If we're emitting relocations, then shortly after this function |
11073 | returns, reloc offsets and addends for this section will be | |
11074 | adjusted. Worse, reloc symbol indices will be for the output | |
8860955f AM |
11075 | file rather than the input. Save a copy of the relocs for |
11076 | opd_entry_value. */ | |
4cc603a5 | 11077 | if (is_opd && (info->emitrelocations || info->relocatable)) |
8860955f AM |
11078 | { |
11079 | bfd_size_type amt; | |
11080 | amt = input_section->reloc_count * sizeof (Elf_Internal_Rela); | |
11081 | rel = bfd_alloc (input_bfd, amt); | |
11082 | BFD_ASSERT (ppc64_elf_tdata (input_bfd)->opd_relocs == NULL); | |
11083 | ppc64_elf_tdata (input_bfd)->opd_relocs = rel; | |
11084 | if (rel == NULL) | |
11085 | return FALSE; | |
11086 | memcpy (rel, relocs, amt); | |
11087 | } | |
5bd4f169 AM |
11088 | return ret; |
11089 | } | |
11090 | ||
754021d0 AM |
11091 | /* Adjust the value of any local symbols in opd sections. */ |
11092 | ||
11093 | static bfd_boolean | |
11094 | ppc64_elf_output_symbol_hook (struct bfd_link_info *info, | |
11095 | const char *name ATTRIBUTE_UNUSED, | |
11096 | Elf_Internal_Sym *elfsym, | |
11097 | asection *input_sec, | |
11098 | struct elf_link_hash_entry *h) | |
11099 | { | |
4025353c | 11100 | long *opd_adjust, adjust; |
754021d0 AM |
11101 | bfd_vma value; |
11102 | ||
4025353c AM |
11103 | if (h != NULL) |
11104 | return TRUE; | |
11105 | ||
11106 | opd_adjust = get_opd_info (input_sec); | |
11107 | if (opd_adjust == NULL) | |
754021d0 AM |
11108 | return TRUE; |
11109 | ||
11110 | value = elfsym->st_value - input_sec->output_offset; | |
11111 | if (!info->relocatable) | |
11112 | value -= input_sec->output_section->vma; | |
11113 | ||
3f764659 | 11114 | adjust = opd_adjust[value / 8]; |
4025353c AM |
11115 | if (adjust == -1) |
11116 | elfsym->st_value = 0; | |
11117 | else | |
11118 | elfsym->st_value += adjust; | |
754021d0 AM |
11119 | return TRUE; |
11120 | } | |
11121 | ||
5bd4f169 AM |
11122 | /* Finish up dynamic symbol handling. We set the contents of various |
11123 | dynamic sections here. */ | |
11124 | ||
b34976b6 | 11125 | static bfd_boolean |
4ce794b7 AM |
11126 | ppc64_elf_finish_dynamic_symbol (bfd *output_bfd, |
11127 | struct bfd_link_info *info, | |
11128 | struct elf_link_hash_entry *h, | |
11129 | Elf_Internal_Sym *sym) | |
5bd4f169 | 11130 | { |
65f38f15 | 11131 | struct ppc_link_hash_table *htab; |
8387904d AM |
11132 | struct plt_entry *ent; |
11133 | Elf_Internal_Rela rela; | |
11134 | bfd_byte *loc; | |
5bd4f169 | 11135 | |
65f38f15 | 11136 | htab = ppc_hash_table (info); |
5bd4f169 | 11137 | |
8387904d AM |
11138 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) |
11139 | if (ent->plt.offset != (bfd_vma) -1) | |
11140 | { | |
11141 | /* This symbol has an entry in the procedure linkage | |
11142 | table. Set it up. */ | |
11143 | ||
11144 | if (htab->plt == NULL | |
11145 | || htab->relplt == NULL | |
11146 | || htab->glink == NULL) | |
11147 | abort (); | |
11148 | ||
11149 | /* Create a JMP_SLOT reloc to inform the dynamic linker to | |
11150 | fill in the PLT entry. */ | |
11151 | rela.r_offset = (htab->plt->output_section->vma | |
11152 | + htab->plt->output_offset | |
11153 | + ent->plt.offset); | |
11154 | rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT); | |
11155 | rela.r_addend = ent->addend; | |
11156 | ||
11157 | loc = htab->relplt->contents; | |
11158 | loc += ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE) / PLT_ENTRY_SIZE | |
11159 | * sizeof (Elf64_External_Rela)); | |
11160 | bfd_elf64_swap_reloca_out (output_bfd, &rela, loc); | |
11161 | } | |
5bd4f169 | 11162 | |
f5385ebf | 11163 | if (h->needs_copy) |
5bd4f169 | 11164 | { |
5bd4f169 | 11165 | Elf_Internal_Rela rela; |
947216bf | 11166 | bfd_byte *loc; |
5bd4f169 | 11167 | |
65f38f15 | 11168 | /* This symbol needs a copy reloc. Set it up. */ |
5bd4f169 | 11169 | |
65f38f15 AM |
11170 | if (h->dynindx == -1 |
11171 | || (h->root.type != bfd_link_hash_defined | |
11172 | && h->root.type != bfd_link_hash_defweak) | |
4ce794b7 | 11173 | || htab->relbss == NULL) |
65f38f15 | 11174 | abort (); |
5bd4f169 AM |
11175 | |
11176 | rela.r_offset = (h->root.u.def.value | |
11177 | + h->root.u.def.section->output_section->vma | |
11178 | + h->root.u.def.section->output_offset); | |
11179 | rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY); | |
11180 | rela.r_addend = 0; | |
4ce794b7 AM |
11181 | loc = htab->relbss->contents; |
11182 | loc += htab->relbss->reloc_count++ * sizeof (Elf64_External_Rela); | |
65f38f15 | 11183 | bfd_elf64_swap_reloca_out (output_bfd, &rela, loc); |
5bd4f169 AM |
11184 | } |
11185 | ||
5bd4f169 AM |
11186 | /* Mark some specially defined symbols as absolute. */ |
11187 | if (strcmp (h->root.root.string, "_DYNAMIC") == 0) | |
11188 | sym->st_shndx = SHN_ABS; | |
11189 | ||
b34976b6 | 11190 | return TRUE; |
5bd4f169 AM |
11191 | } |
11192 | ||
65f38f15 AM |
11193 | /* Used to decide how to sort relocs in an optimal manner for the |
11194 | dynamic linker, before writing them out. */ | |
11195 | ||
11196 | static enum elf_reloc_type_class | |
4ce794b7 | 11197 | ppc64_elf_reloc_type_class (const Elf_Internal_Rela *rela) |
65f38f15 | 11198 | { |
04c9666a | 11199 | enum elf_ppc64_reloc_type r_type; |
a33d1f77 | 11200 | |
4ce794b7 | 11201 | r_type = ELF64_R_TYPE (rela->r_info); |
a33d1f77 | 11202 | switch (r_type) |
65f38f15 AM |
11203 | { |
11204 | case R_PPC64_RELATIVE: | |
11205 | return reloc_class_relative; | |
11206 | case R_PPC64_JMP_SLOT: | |
11207 | return reloc_class_plt; | |
11208 | case R_PPC64_COPY: | |
11209 | return reloc_class_copy; | |
11210 | default: | |
11211 | return reloc_class_normal; | |
11212 | } | |
11213 | } | |
11214 | ||
5bd4f169 AM |
11215 | /* Finish up the dynamic sections. */ |
11216 | ||
b34976b6 | 11217 | static bfd_boolean |
4ce794b7 AM |
11218 | ppc64_elf_finish_dynamic_sections (bfd *output_bfd, |
11219 | struct bfd_link_info *info) | |
5bd4f169 | 11220 | { |
65f38f15 AM |
11221 | struct ppc_link_hash_table *htab; |
11222 | bfd *dynobj; | |
5bd4f169 | 11223 | asection *sdyn; |
5bd4f169 | 11224 | |
65f38f15 AM |
11225 | htab = ppc_hash_table (info); |
11226 | dynobj = htab->elf.dynobj; | |
5bd4f169 AM |
11227 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); |
11228 | ||
65f38f15 | 11229 | if (htab->elf.dynamic_sections_created) |
5bd4f169 | 11230 | { |
5bd4f169 AM |
11231 | Elf64_External_Dyn *dyncon, *dynconend; |
11232 | ||
4ce794b7 | 11233 | if (sdyn == NULL || htab->got == NULL) |
65f38f15 | 11234 | abort (); |
5bd4f169 AM |
11235 | |
11236 | dyncon = (Elf64_External_Dyn *) sdyn->contents; | |
eea6121a | 11237 | dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size); |
5bd4f169 AM |
11238 | for (; dyncon < dynconend; dyncon++) |
11239 | { | |
11240 | Elf_Internal_Dyn dyn; | |
19397422 | 11241 | asection *s; |
5bd4f169 AM |
11242 | |
11243 | bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn); | |
11244 | ||
11245 | switch (dyn.d_tag) | |
11246 | { | |
65f38f15 AM |
11247 | default: |
11248 | continue; | |
5bd4f169 | 11249 | |
5d1634d7 | 11250 | case DT_PPC64_GLINK: |
4ce794b7 | 11251 | s = htab->glink; |
6348e046 | 11252 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
ad8e1ba5 AM |
11253 | /* We stupidly defined DT_PPC64_GLINK to be the start |
11254 | of glink rather than the first entry point, which is | |
11255 | what ld.so needs, and now have a bigger stub to | |
11256 | support automatic multiple TOCs. */ | |
11257 | dyn.d_un.d_ptr += GLINK_CALL_STUB_SIZE - 32; | |
5d1634d7 AM |
11258 | break; |
11259 | ||
19397422 AM |
11260 | case DT_PPC64_OPD: |
11261 | s = bfd_get_section_by_name (output_bfd, ".opd"); | |
6348e046 AM |
11262 | if (s == NULL) |
11263 | continue; | |
11264 | dyn.d_un.d_ptr = s->vma; | |
19397422 AM |
11265 | break; |
11266 | ||
11267 | case DT_PPC64_OPDSZ: | |
11268 | s = bfd_get_section_by_name (output_bfd, ".opd"); | |
6348e046 AM |
11269 | if (s == NULL) |
11270 | continue; | |
eea6121a | 11271 | dyn.d_un.d_val = s->size; |
19397422 AM |
11272 | break; |
11273 | ||
65f38f15 | 11274 | case DT_PLTGOT: |
4ce794b7 | 11275 | s = htab->plt; |
6348e046 | 11276 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
65f38f15 AM |
11277 | break; |
11278 | ||
11279 | case DT_JMPREL: | |
4ce794b7 | 11280 | s = htab->relplt; |
6348e046 | 11281 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
65f38f15 | 11282 | break; |
5bd4f169 | 11283 | |
65f38f15 | 11284 | case DT_PLTRELSZ: |
eea6121a | 11285 | dyn.d_un.d_val = htab->relplt->size; |
5d1634d7 AM |
11286 | break; |
11287 | ||
11288 | case DT_RELASZ: | |
11289 | /* Don't count procedure linkage table relocs in the | |
11290 | overall reloc count. */ | |
4ce794b7 | 11291 | s = htab->relplt; |
6348e046 AM |
11292 | if (s == NULL) |
11293 | continue; | |
eea6121a | 11294 | dyn.d_un.d_val -= s->size; |
6348e046 AM |
11295 | break; |
11296 | ||
11297 | case DT_RELA: | |
11298 | /* We may not be using the standard ELF linker script. | |
11299 | If .rela.plt is the first .rela section, we adjust | |
11300 | DT_RELA to not include it. */ | |
4ce794b7 | 11301 | s = htab->relplt; |
6348e046 AM |
11302 | if (s == NULL) |
11303 | continue; | |
11304 | if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset) | |
11305 | continue; | |
eea6121a | 11306 | dyn.d_un.d_ptr += s->size; |
65f38f15 | 11307 | break; |
5bd4f169 | 11308 | } |
5bd4f169 | 11309 | |
65f38f15 | 11310 | bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); |
5bd4f169 | 11311 | } |
5bd4f169 AM |
11312 | } |
11313 | ||
eea6121a | 11314 | if (htab->got != NULL && htab->got->size != 0) |
5d1634d7 AM |
11315 | { |
11316 | /* Fill in the first entry in the global offset table. | |
11317 | We use it to hold the link-time TOCbase. */ | |
11318 | bfd_put_64 (output_bfd, | |
60ee0d4a | 11319 | elf_gp (output_bfd) + TOC_BASE_OFF, |
4ce794b7 | 11320 | htab->got->contents); |
5d1634d7 AM |
11321 | |
11322 | /* Set .got entry size. */ | |
4ce794b7 | 11323 | elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 8; |
5d1634d7 AM |
11324 | } |
11325 | ||
eea6121a | 11326 | if (htab->plt != NULL && htab->plt->size != 0) |
5d1634d7 AM |
11327 | { |
11328 | /* Set .plt entry size. */ | |
4ce794b7 | 11329 | elf_section_data (htab->plt->output_section)->this_hdr.sh_entsize |
5d1634d7 AM |
11330 | = PLT_ENTRY_SIZE; |
11331 | } | |
11332 | ||
e717da7e | 11333 | /* We need to handle writing out multiple GOT sections ourselves, |
7b53ace3 AM |
11334 | since we didn't add them to DYNOBJ. We know dynobj is the first |
11335 | bfd. */ | |
e717da7e AM |
11336 | while ((dynobj = dynobj->link_next) != NULL) |
11337 | { | |
11338 | asection *s; | |
7b53ace3 | 11339 | |
ee75fd95 | 11340 | if (!is_ppc64_elf_target (dynobj->xvec)) |
7b53ace3 AM |
11341 | continue; |
11342 | ||
e717da7e AM |
11343 | s = ppc64_elf_tdata (dynobj)->got; |
11344 | if (s != NULL | |
eea6121a | 11345 | && s->size != 0 |
e717da7e AM |
11346 | && s->output_section != bfd_abs_section_ptr |
11347 | && !bfd_set_section_contents (output_bfd, s->output_section, | |
11348 | s->contents, s->output_offset, | |
eea6121a | 11349 | s->size)) |
e717da7e AM |
11350 | return FALSE; |
11351 | s = ppc64_elf_tdata (dynobj)->relgot; | |
11352 | if (s != NULL | |
eea6121a | 11353 | && s->size != 0 |
e717da7e AM |
11354 | && s->output_section != bfd_abs_section_ptr |
11355 | && !bfd_set_section_contents (output_bfd, s->output_section, | |
11356 | s->contents, s->output_offset, | |
eea6121a | 11357 | s->size)) |
e717da7e AM |
11358 | return FALSE; |
11359 | } | |
f6c52c13 | 11360 | |
b34976b6 | 11361 | return TRUE; |
5bd4f169 AM |
11362 | } |
11363 | ||
5bd4f169 | 11364 | #include "elf64-target.h" |